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Author SHA1 Message Date
Ján Tomko
1ef98539a6 api: disallow virConnect*HypervisorCPU on read-only connections
These APIs can be used to execute arbitrary emulators.
Forbid them on read-only connections.

Fixes: CVE-2019-10168
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
(cherry picked from commit bf6c2830b6)
Signed-off-by: Ján Tomko <jtomko@redhat.com>
2019-06-24 09:46:12 +02:00
Ján Tomko
58f237d696 api: disallow virConnectGetDomainCapabilities on read-only connections
This API can be used to execute arbitrary emulators.
Forbid it on read-only connections.

Fixes: CVE-2019-10167
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
(cherry picked from commit 8afa68bac0)
Signed-off-by: Ján Tomko <jtomko@redhat.com>
2019-06-24 09:46:09 +02:00
Ján Tomko
a064d49227 api: disallow virDomainManagedSaveDefineXML on read-only connections
The virDomainManagedSaveDefineXML can be used to alter the domain's
config used for managedsave or even execute arbitrary emulator binaries.
Forbid it on read-only connections.

Fixes: CVE-2019-10166
Reported-by: Matthias Gerstner <mgerstner@suse.de>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
(cherry picked from commit db0b78457f)
Signed-off-by: Ján Tomko <jtomko@redhat.com>
2019-06-24 09:46:01 +02:00
Ján Tomko
6aa0c85be9 api: disallow virDomainSaveImageGetXMLDesc on read-only connections
The virDomainSaveImageGetXMLDesc API is taking a path parameter,
which can point to any path on the system. This file will then be
read and parsed by libvirtd running with root privileges.

Forbid it on read-only connections.

Fixes: CVE-2019-10161
Reported-by: Matthias Gerstner <mgerstner@suse.de>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
(cherry picked from commit aed6a032ce)
Signed-off-by: Ján Tomko <jtomko@redhat.com>

Conflicts:
  src/libvirt-domain.c
  src/remote/remote_protocol.x

Upstream commit 12a51f372 which introduced the VIR_DOMAIN_SAVE_IMAGE_XML_SECURE
alias for VIR_DOMAIN_XML_SECURE is not backported.
Just skip the commit since we now disallow the whole API on read-only
connections, regardless of the flag.
2019-06-24 09:43:52 +02:00
Daniel P. Berrangé
be311e1ba9 logging: restrict sockets to mode 0600
The virtlogd daemon's only intended client is the libvirtd daemon. As
such it should never allow clients from other user accounts to connect.
The code already enforces this and drops clients from other UIDs, but
we can get earlier (and thus stronger) protection against DoS by setting
the socket permissions to 0600

Fixes CVE-2019-10132

Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
(cherry picked from commit e37bd65f99)
2019-05-21 13:28:57 +01:00
Daniel P. Berrangé
5aa8b8d1b1 locking: restrict sockets to mode 0600
The virtlockd daemon's only intended client is the libvirtd daemon. As
such it should never allow clients from other user accounts to connect.
The code already enforces this and drops clients from other UIDs, but
we can get earlier (and thus stronger) protection against DoS by setting
the socket permissions to 0600

Fixes CVE-2019-10132

Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
(cherry picked from commit f111e09468)
2019-05-21 13:28:56 +01:00
Daniel P. Berrangé
78a00c539d admin: reject clients unless their UID matches the current UID
The admin protocol RPC messages are only intended for use by the user
running the daemon. As such they should not be allowed for any client
UID that does not match the server UID.

Fixes CVE-2019-10132

Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
(cherry picked from commit 96f41cd765)
2019-05-21 13:28:56 +01:00
4500 changed files with 219383 additions and 488886 deletions

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@@ -1 +0,0 @@
../.ctags

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@@ -1,21 +0,0 @@
# EditorConfig is a file format and collection of text editor plugins
# for maintaining consistent coding styles between different editors
# and IDEs. Most popular editors support this either natively or via
# plugin.
#
# Check https://editorconfig.org for details.
root = true
[*]
end_of_line = lf
insert_final_newline = true
charset = utf-8
[*.c]
indent_style = space
indent_size = 4
[*.{rng,xml}]
indent_style = space
indent_size = 2

231
.gitignore vendored
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@@ -1,44 +1,215 @@
# vim related ignores
*.swp
.lvimrc
# emacs related ignores
*#*#
*.#*#
.#*
# autotools related ignores
!/m4/virt-*.m4
*.[187]
*.[187].in
*.a
*.cov
*.exe
*.exe.manifest
*.gcda
*.gcno
*.gcov
*.html
*.i
*.init
*.la
*.lo
*.loT
*.o
*.orig
*.pem
*.pyc
*.rej
*.s
*.service
*.socket
*.swp
*~
.#*
.color_coded
.deps
.dirstamp
.gdb_history
.git
.git-module-status
.libs
.lvimrc
.memdump
.sc-start-sc_*
.ycm_extra_conf.py
/AUTHORS
/ChangeLog
/GNUmakefile
/INSTALL
/NEWS
/aclocal.m4
/autom4te.cache
/build-aux/.gitignore
/build-aux/compile
/build-aux/depcomp
/build-aux/missing
/build-aux/test-driver
/build-aux/*
/build/
/confdefs.h
/config.cache
/config.guess
/config.h
/config.h.in
/config.log
/config.rpath
/config.status
/config.sub
/configure
/m4/*
Makefile.in
# gnulib related ignores
!/gnulib/lib/Makefile.am
!/gnulib/tests/Makefile.am
*.rej
*~
/configure.lineno
/conftest.*
/docs/aclperms.htmlinc
/docs/apibuild.py.stamp
/docs/devhelp/libvirt.devhelp
/docs/hvsupport.html.in
/docs/libvirt-admin-*.xml
/docs/libvirt-api.xml
/docs/libvirt-lxc-*.xml
/docs/libvirt-qemu-*.xml
/docs/libvirt-refs.xml
/docs/news.html.in
/docs/search.php
/docs/todo.html.in
/examples/admin/client_close
/examples/admin/client_info
/examples/admin/client_limits
/examples/admin/list_clients
/examples/admin/list_servers
/examples/admin/logging
/examples/admin/threadpool_params
/examples/object-events/event-test
/examples/dominfo/info1
/examples/domsuspend/suspend
/examples/dommigrate/dommigrate
/examples/domtop/domtop
/examples/hellolibvirt/hellolibvirt
/examples/openauth/openauth
/examples/rename/rename
/gnulib/lib/*
/gnulib/m4/*
/gnulib/tests/*
# git related ignores
*.orig
.git-module-status
# libvirt related ignores
/build/
/ci/scratch/
/include/libvirt/libvirt-common.h
/libtool
/libvirt-*.tar.xz
/libvirt-[0-9]*
/libvirt*.pc
/libvirt.spec
/ltconfig
/ltmain.sh
/m4/*
/maint.mk
/mingw-libvirt.spec
/mkinstalldirs
/po/*gmo
/po/*po
!/po/*.mini.po
/po/*pot
/proxy/
/python/
/run
/sc_*
/src/.*.stamp
/src/*.pc
/src/access/org.libvirt.api.policy
/src/access/viraccessapicheck.c
/src/access/viraccessapicheck.h
/src/access/viraccessapichecklxc.c
/src/access/viraccessapichecklxc.h
/src/access/viraccessapicheckqemu.c
/src/access/viraccessapicheckqemu.h
/src/admin/admin_client.h
/src/admin/admin_protocol.[ch]
/src/admin/admin_server_dispatch_stubs.h
/src/esx/*.generated.*
/src/hyperv/*.generated.*
/src/libvirt*.def
/src/libvirt.syms
/src/libvirt_access.syms
/src/libvirt_access.xml
/src/libvirt_access_lxc.syms
/src/libvirt_access_lxc.xml
/src/libvirt_access_qemu.syms
/src/libvirt_access_qemu.xml
/src/libvirt_admin.syms
/src/libvirt_*.stp
/src/libvirt_*helper
/src/libvirt_*probes.h
/src/libvirt_lxc
/src/libvirtd
/src/libvirtd*.logrotate
/src/locking/libxl-lockd.conf
/src/locking/libxl-sanlock.conf
/src/locking/lock_daemon_dispatch_stubs.h
/src/locking/lock_protocol.[ch]
/src/locking/qemu-lockd.conf
/src/locking/qemu-sanlock.conf
/src/locking/test_libvirt_sanlock.aug
/src/logging/log_daemon_dispatch_stubs.h
/src/logging/log_protocol.[ch]
/src/lxc/lxc_controller_dispatch.h
/src/lxc/lxc_monitor_dispatch.h
/src/lxc/lxc_monitor_protocol.c
/src/lxc/lxc_monitor_protocol.h
/src/lxc/lxc_protocol.[ch]
/src/lxc/test_libvirtd_lxc.aug
/src/qemu/test_libvirtd_qemu.aug
/src/remote/*_client_bodies.h
/src/remote/*_protocol.[ch]
/src/remote/*_stubs.h
/src/rpc/virkeepaliveprotocol.[ch]
/src/rpc/virnetprotocol.[ch]
/src/test_libvirt*.aug
/src/test_virtlockd.aug
/src/test_virtlogd.aug
/src/util/virkeycodetable*.h
/src/util/virkeynametable*.h
/src/virt-aa-helper
/src/virtlockd
/src/virtlogd
/src/virt-guest-shutdown.target
/tests/*.log
/tests/*.pid
/tests/*.trs
/tests/*test
/tests/commandhelper
/tests/qemucapsprobe
!/tests/virsh-self-test
!/tests/virt-aa-helper-test
!/tests/virt-admin-self-test
/tests/objectlocking
/tests/objectlocking-files.txt
/tests/objectlocking.cm[ix]
/tests/reconnect
/tests/ssh
/tests/test_file_access.txt
/tests/test_conf
/tools/libvirt-guests.sh
/tools/virt-login-shell
/tools/virsh
/tools/virsh-*-edit.c
/tools/virt-admin
/tools/virt-*-validate
/tools/virt-sanlock-cleanup
/tools/wireshark/src/plugin.c
/tools/wireshark/src/libvirt
/update.log
GPATH
GRTAGS
GTAGS
Makefile
Makefile.in
TAGS
coverage
cscope.files
cscope.in.out
cscope.out
cscope.po.out
results.log
stamp-h
stamp-h.in
stamp-h1
tags
!/build-aux/*.pl
!/gnulib/lib/Makefile.am
!/gnulib/tests/Makefile.am
!/m4/virt-*.m4

View File

@@ -1,46 +0,0 @@
.job_template: &job_definition
script:
- mkdir build
- cd build
- ../autogen.sh $CONFIGURE_OPTS || (cat config.log && exit 1)
- make -j $(getconf _NPROCESSORS_ONLN)
# We could run every arch on every versions, but it is a little
# overkill. Instead we split jobs evenly across 9, 10 and sid
# to achieve reasonable cross-coverage.
debian-9-cross-armv6l:
<<: *job_definition
image: quay.io/libvirt/buildenv-libvirt-debian-9-cross-armv6l:latest
debian-9-cross-mips64el:
<<: *job_definition
image: quay.io/libvirt/buildenv-libvirt-debian-9-cross-mips64el:latest
debian-9-cross-mips:
<<: *job_definition
image: quay.io/libvirt/buildenv-libvirt-debian-9-cross-mips:latest
debian-10-cross-aarch64:
<<: *job_definition
image: quay.io/libvirt/buildenv-libvirt-debian-10-cross-aarch64:latest
debian-10-cross-ppc64le:
<<: *job_definition
image: quay.io/libvirt/buildenv-libvirt-debian-10-cross-ppc64le:latest
debian-10-cross-s390x:
<<: *job_definition
image: quay.io/libvirt/buildenv-libvirt-debian-10-cross-s390x:latest
debian-sid-cross-armv7l:
<<: *job_definition
image: quay.io/libvirt/buildenv-libvirt-debian-sid-cross-armv7l:latest
debian-sid-cross-i686:
<<: *job_definition
image: quay.io/libvirt/buildenv-libvirt-debian-sid-cross-i686:latest
debian-sid-cross-mipsel:
<<: *job_definition
image: quay.io/libvirt/buildenv-libvirt-debian-sid-cross-mipsel:latest

Submodule .gnulib updated: 7d06937892...8089c00979

View File

@@ -43,10 +43,6 @@
<nshirokovskiy@virtuozzo.com> <nshirokovskiy@parallels.com>
<jyang@redhat.com> <osier@yunify.com>
<kkoukiou@redhat.com> <k.koukiou@googlemail.com>
<intrigeri@boum.org> <intrigeri+libvirt@boum.org>
<fidencio@redhat.com> <fabiano@fidencio.org>
<shi_lei@massclouds.com> <shilei.massclouds@gmx.com>
<adrian.brzezinski@eo.pl> <redhat@adrb.pl>
# Name consolidation:
# Preferred author spelling <preferred email>

View File

@@ -5,102 +5,95 @@ branches:
except:
- /^.*-maint$/
addons:
homebrew:
update: true
packages:
- ccache
- rpcgen
- xz
- yajl
- glib
- docutils
matrix:
include:
- services:
- docker
env:
- IMAGE="ubuntu-1804"
- MAKE_ARGS="syntax-check distcheck"
script:
- make -C ci/ ci-build@$IMAGE CI_MAKE_ARGS="$MAKE_ARGS"
- IMAGE="ubuntu-18"
- DISTCHECK_CONFIGURE_FLAGS="--with-init-script=systemd"
- DOCKER_CMD="$LINUX_CMD"
- services:
- docker
env:
- IMAGE="centos-7"
- MAKE_ARGS="syntax-check distcheck"
script:
- make -C ci/ ci-build@$IMAGE CI_MAKE_ARGS="$MAKE_ARGS"
- services:
- docker
env:
- IMAGE="debian-9"
- MAKE_ARGS="syntax-check distcheck"
script:
- make -C ci/ ci-build@$IMAGE CI_MAKE_ARGS="$MAKE_ARGS"
- services:
- docker
env:
- IMAGE="fedora-31"
- MAKE_ARGS="syntax-check distcheck"
script:
- make -C ci/ ci-build@$IMAGE CI_MAKE_ARGS="$MAKE_ARGS"
- DISTCHECK_CONFIGURE_FLAGS="--with-init-script=upstart"
- DOCKER_CMD="$LINUX_CMD"
- services:
- docker
env:
- IMAGE="fedora-rawhide"
- MAKE_ARGS="syntax-check distcheck"
script:
- make -C ci/ ci-build@$IMAGE CI_MAKE_ARGS="$MAKE_ARGS"
- services:
- docker
env:
- IMAGE="fedora-30"
- MINGW="mingw32"
script:
- make -C ci/ ci-build@$IMAGE CI_CONFIGURE="$MINGW-configure"
- DOCKER_CMD="$MINGW_CMD"
- services:
- docker
env:
- IMAGE="fedora-30"
- IMAGE="fedora-rawhide"
- MINGW="mingw64"
script:
- make -C ci/ ci-build@$IMAGE CI_CONFIGURE="$MINGW-configure"
- DOCKER_CMD="$MINGW_CMD"
- compiler: clang
language: c
os: osx
osx_image: xcode10.3
env:
- PATH="/usr/local/opt/gettext/bin:/usr/local/opt/ccache/libexec:/usr/local/opt/rpcgen/bin:$PATH"
- PKG_CONFIG_PATH="/usr/local/opt/libxml2/lib/pkgconfig"
before_script:
# Hack to blow away py2
- brew link --overwrite python
script:
# We can't run 'distcheck' or 'syntax-check' because they fail on
# macOS, but doing 'install' and 'dist' gives us some useful coverage
- mkdir build && cd build
- ../autogen.sh --prefix=$(pwd)/install-root && make -j3 && make -j3 install && make -j3 dist
- compiler: clang
language: c
os: osx
osx_image: xcode11.3
env:
- PATH="/usr/local/opt/gettext/bin:/usr/local/opt/ccache/libexec:/usr/local/opt/rpcgen/bin:$PATH"
- PKG_CONFIG_PATH="/usr/local/opt/libxml2/lib/pkgconfig"
before_script:
# Hack to blow away py2
- brew link --overwrite python
script:
# We can't run 'distcheck' or 'syntax-check' because they fail on
# macOS, but doing 'install' and 'dist' gives us some useful coverage
- mkdir build && cd build
- ../autogen.sh --prefix=$(pwd)/install-root && make -j3 && make -j3 install && make -j3 dist
/bin/sh -xc "$MACOS_CMD"
script:
- docker run
-v $(pwd):/build
-w /build
-e VIR_TEST_DEBUG="$VIR_TEST_DEBUG"
-e MINGW="$MINGW"
-e DISTCHECK_CONFIGURE_FLAGS="$DISTCHECK_CONFIGURE_FLAGS"
"quay.io/libvirt/buildenv-$IMAGE:master"
/bin/sh -xc "$DOCKER_CMD"
git:
submodules: true
env:
global:
- VIR_TEST_DEBUG=1
- LINUX_CMD="
./autogen.sh &&
make -j3 syntax-check &&
make -j3 distcheck DISTCHECK_CONFIGURE_FLAGS=\"\$DISTCHECK_CONFIGURE_FLAGS\" ||
(
echo '=== LOG FILE(S) START ===';
find -name test-suite.log | xargs cat;
echo '=== LOG FILE(S) END ===';
exit 1
)
"
- MINGW_CMD="
NOCONFIGURE=1 ./autogen.sh &&
\$MINGW-configure &&
make -j3 ||
(
echo '=== LOG FILE(S) START ===';
find -name test-suite.log | xargs cat;
echo '=== LOG FILE(S) END ===';
exit 1
)
"
# We can't run 'distcheck' or 'syntax-check' because they fail on
# macOS, but doing 'install' and 'dist' gives us some useful coverage
- MACOS_CMD="
brew update &&
brew install ccache rpcgen xz yajl &&
./autogen.sh --prefix=\$(pwd)/install-root &&
make -j3 &&
make -j3 install &&
make -j3 dist ||
(
echo '=== LOG FILE(S) START ===';
find -name test-suite.log | xargs cat;
echo '=== LOG FILE(S) END ===';
exit 1
)
"
notifications:
irc:
# The channel name "irc.oftc.net#virt" is encrypted against libvirt/libvirt

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@@ -19,7 +19,6 @@ Daniel Veillard <veillard@redhat.com>
Doug Goldstein <cardoe@gentoo.org>
Eric Blake <eblake@redhat.com>
Erik Skultety <eskultet@redhat.com>
Fabiano Fidêncio <fidencio@redhat.com>
Gao Feng <gaofeng@cn.fujitsu.com>
Guido Günther <agx@sigxcpu.org>
Ján Tomko <jtomko@redhat.com>

View File

@@ -1,15 +0,0 @@
libvirt ChangeLog
=================
The libvirt project doesn't include a detailed ChangeLog in its release
archives.
If you're interested in the full list of changes made to libvirt since
the project was started, you can clone the git repository from
https://libvirt.org/git/libvirt.git
and browse them locally using your favorite git history viewer or,
alternatively, browse them online at
https://libvirt.org/git/?p=libvirt.git;a=log

16699
ChangeLog-old Normal file

File diff suppressed because it is too large Load Diff

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@@ -1,74 +0,0 @@
# Having a separate GNUmakefile lets me 'include' the dynamically
# generated rules created via cfg.mk (package-local configuration)
# as well as maint.mk (generic maintainer rules).
# This makefile is used only if you run GNU Make.
# It is necessary if you want to build targets usually of interest
# only to the maintainer.
# Copyright (C) 2001, 2003, 2006-2019 Free Software Foundation, Inc.
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <https://www.gnu.org/licenses/>.
_build-aux ?= build-aux
_autoreconf ?= autoreconf -v
# If the user runs GNU make but has not yet run ./configure,
# give them a diagnostic.
_gl-Makefile := $(wildcard [M]akefile)
ifneq ($(_gl-Makefile),)
# Make tar archive easier to reproduce.
export TAR_OPTIONS = --owner=0 --group=0 --numeric-owner
# Allow the user to add to this in the Makefile.
ALL_RECURSIVE_TARGETS =
include Makefile
include $(srcdir)/$(_build-aux)/syntax-check.mk
else
.DEFAULT_GOAL := abort-due-to-no-makefile
srcdir = .
# The package can override .DEFAULT_GOAL to run actions like autoreconf.
include $(srcdir)/$(_build-aux)/syntax-check.mk
ifeq ($(.DEFAULT_GOAL),abort-due-to-no-makefile)
$(MAKECMDGOALS): abort-due-to-no-makefile
endif
abort-due-to-no-makefile:
@echo There seems to be no Makefile in this directory. 1>&2
@echo "You must run ./configure before running 'make'." 1>&2
@exit 1
endif
# Tell version 3.79 and up of GNU make to not build goals in this
# directory in parallel, in case someone tries to build multiple
# targets, and one of them can cause a recursive target to be invoked.
# Only set this if Automake doesn't provide it.
AM_RECURSIVE_TARGETS ?= $(RECURSIVE_TARGETS:-recursive=) \
$(RECURSIVE_CLEAN_TARGETS:-recursive=) \
dist distcheck tags ctags
ALL_RECURSIVE_TARGETS += $(AM_RECURSIVE_TARGETS)
ifneq ($(word 2, $(MAKECMDGOALS)), )
ifneq ($(filter $(ALL_RECURSIVE_TARGETS), $(MAKECMDGOALS)), )
.NOTPARALLEL:
endif
endif

View File

@@ -19,10 +19,6 @@
LCOV = lcov
GENHTML = genhtml
# when building from tarball -Werror isn't auto enabled
# so force it explicitly
DISTCHECK_CONFIGURE_FLAGS = --enable-werror
SUBDIRS = . gnulib/lib include/libvirt src tools docs gnulib/tests \
tests po examples
@@ -33,6 +29,7 @@ ACLOCAL_AMFLAGS = -I m4
EXTRA_DIST = \
config-post.h \
ChangeLog-old \
libvirt.spec libvirt.spec.in \
mingw-libvirt.spec.in \
libvirt.pc.in \
@@ -41,43 +38,10 @@ EXTRA_DIST = \
libvirt-admin.pc.in \
Makefile.nonreentrant \
autogen.sh \
GNUmakefile \
cfg.mk \
run.in \
README.md \
AUTHORS.in \
scripts/apibuild.py \
scripts/augeas-gentest.py \
build-aux/check-spacing.pl \
scripts/check-aclperms.py \
scripts/check-aclrules.py \
scripts/check-drivername.py \
scripts/check-driverimpls.py \
scripts/check-file-access.py \
scripts/check-remote-protocol.py \
scripts/check-symfile.py \
scripts/check-symsorting.py \
scripts/dtrace2systemtap.py \
scripts/esx_vi_generator.py \
scripts/genaclperms.py \
scripts/genpolkit.py \
scripts/gensystemtap.py \
scripts/group-qemu-caps.py \
scripts/header-ifdef.py \
scripts/hvsupport.py \
scripts/hyperv_wmi_generator.py \
scripts/minimize-po.py \
scripts/mock-noinline.py \
scripts/prohibit-duplicate-header.py \
scripts/reformat-news.py \
scripts/test-wrap-argv.py \
build-aux/syntax-check.mk \
build-aux/useless-if-before-free \
build-aux/vc-list-files \
ci/Makefile \
ci/build.sh \
ci/list-images.sh \
ci/prepare.sh \
$(NULL)
AUTHORS.in
pkgconfigdir = $(libdir)/pkgconfig
pkgconfig_DATA = libvirt.pc libvirt-qemu.pc libvirt-lxc.pc libvirt-admin.pc
@@ -85,7 +49,7 @@ pkgconfig_DATA = libvirt.pc libvirt-qemu.pc libvirt-lxc.pc libvirt-admin.pc
NEWS: \
$(srcdir)/docs/news.xml \
$(srcdir)/docs/news-ascii.xsl \
$(top_srcdir)/scripts/reformat-news.py
$(srcdir)/docs/reformat-news.py
$(AM_V_GEN) \
if [ -x $(XSLTPROC) ]; then \
$(XSLTPROC) --nonet \
@@ -93,14 +57,14 @@ NEWS: \
$(srcdir)/docs/news.xml \
>$@-tmp \
|| { rm -f $@-tmp; exit 1; }; \
$(RUNUTF8) $(PYTHON) $(top_srcdir)/scripts/reformat-news.py $@-tmp >$@ \
$(PYTHON) $(srcdir)/docs/reformat-news.py $@-tmp >$@ \
|| { rm -f $@-tmp; exit 1; }; \
rm -f $@-tmp; \
fi
EXTRA_DIST += \
$(srcdir)/docs/news.xml \
$(srcdir)/docs/news-ascii.xsl \
$(NULL)
$(srcdir)/docs/reformat-news.py
rpm: clean
@(unset CDPATH ; $(MAKE) dist && rpmbuild -ta $(distdir).tar.xz)
@@ -110,7 +74,7 @@ srpm: clean
check-local: all tests
check-access: all
check-access:
@($(MAKE) $(AM_MAKEFLAGS) -C tests check-access)
cov: clean-cov
@@ -129,11 +93,19 @@ clean-cov:
MAINTAINERCLEANFILES = .git-module-status
distclean-local: clean-GNUmakefile
clean-GNUmakefile:
test '$(srcdir)' = . || rm -f $(top_builddir)/GNUmakefile
dist-hook: gen-ChangeLog gen-AUTHORS
dist-hook: gen-AUTHORS
# Generate the ChangeLog file (with all entries since the switch to git)
# and insert it into the directory we're about to use to create a tarball.
gen_start_date = 2009-07-04
.PHONY: gen-ChangeLog
gen-ChangeLog:
$(AM_V_GEN)if test -d .git; then \
$(top_srcdir)/build-aux/gitlog-to-changelog \
--since=$(gen_start_date) > $(distdir)/cl-t; \
rm -f $(distdir)/ChangeLog; \
mv $(distdir)/cl-t $(distdir)/ChangeLog; \
fi
.PHONY: gen-AUTHORS
gen-AUTHORS:
@@ -151,6 +123,3 @@ gen-AUTHORS:
mv -f $(distdir)/AUTHORS-tmp $(distdir)/AUTHORS && \
rm -f all.list maint.list contrib.list; \
fi
ci-%:
$(MAKE) -C $(srcdir)/ci/ $@

View File

@@ -11,7 +11,7 @@ We've opted to keep only the highest-level sources in the GIT repository.
This eases our maintenance burden, (fewer merges etc.), but imposes more
requirements on anyone wishing to build from the just-checked-out sources.
Note the requirements to build the released archive are much less and
are just the requirements of the standard configure && make procedure.
are just the requirements of the standard ./configure && make procedure.
Specific development tools and versions will be checked for and listed by
the bootstrap script.
@@ -34,14 +34,10 @@ reduce download time and disk space requirements:
$ export GNULIB_SRCDIR=/path/to/gnulib
We require to have the build directory different than the source directory:
$ mkdir build && cd build
The next step is to get all required pieces from gnulib,
to run autoreconf, and to invoke ../autogen.sh:
to run autoreconf, and to invoke ./configure:
$ ../autogen.sh
$ ./autogen.sh
And there you are! Just
@@ -51,7 +47,6 @@ And there you are! Just
At this point, there should be no difference between your local copy,
and the GIT master copy:
$ cd ..
$ git diff
should output no difference.

View File

@@ -30,7 +30,7 @@ License
The libvirt C API is distributed under the terms of GNU Lesser General
Public License, version 2.1 (or later). Some parts of the code that are
not part of the C library may have the more restrictive GNU General
Public License, version 2.0 (or later). See the files `COPYING.LESSER`
Public License, version 2.1 (or later). See the files `COPYING.LESSER`
and `COPYING` for full license terms & conditions.
@@ -38,13 +38,11 @@ Installation
------------
Libvirt uses the GNU Autotools build system, so in general can be built
and installed with the usual commands, however, we mandate to have the
build directory different than the source directory. For example, to build
in a manner that is suitable for installing as root, use:
and installed with the usual commands. For example, to build in a manner
that is suitable for installing as root, use:
```
$ mkdir build && cd build
$ ../configure --prefix=/usr --sysconfdir=/etc --localstatedir=/var
$ ./configure --prefix=/usr --sysconfdir=/etc --localstatedir=/var
$ make
$ sudo make install
```
@@ -52,8 +50,7 @@ $ sudo make install
While to build & install as an unprivileged user
```
$ mkdir build && cd build
$ ../configure --prefix=$HOME/usr
$ ./configure --prefix=$HOME/usr
$ make
$ make install
```

View File

@@ -4,7 +4,7 @@ scriptversion=2019-01-04.17; # UTC
# Bootstrap this package from checked-out sources.
# Copyright (C) 2003-2020 Free Software Foundation, Inc.
# Copyright (C) 2003-2019 Free Software Foundation, Inc.
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
@@ -166,7 +166,7 @@ bootstrap_epilogue() { :; }
# specified directory. Fill in the first %s with the destination
# directory and the second with the domain name.
po_download_command_format=\
"wget --mirror --level=1 -nd -nv -A.po -P '%s' \
"wget --mirror --level=1 -nd -q -A.po -P '%s' \
https://translationproject.org/latest/%s/"
# Prefer a non-empty tarname (4th argument of AC_INIT if given), else

View File

@@ -10,120 +10,124 @@
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Lesser General Public License for more details.
# GNU General Public License for more details.
# You should have received a copy of the GNU Lesser General Public
# License along with this library. If not, see
# <http://www.gnu.org/licenses/>.
# gnulib modules used by this package.
# NB the GSocket conversion is non-trivial due to the
# different FD vs HANDLE usage in gnulib vs glib. Need
# to find a way to duplicate a socket HANDLE before
# turning it into a FD, since closing an FD also closes
# the original HANDLE.
# -> GSocket
gnulib_modules="$gnulib_modules accept"
# -> GSocket
gnulib_modules="$gnulib_modules bind"
# -> conditional build to avoid Win32
gnulib_modules="$gnulib_modules chown"
# -> GSocket
gnulib_modules="$gnulib_modules close"
# -> GSocket
gnulib_modules="$gnulib_modules connect"
# -> Meson
gnulib_modules="$gnulib_modules configmake"
# -> eliminate usage in some manner
gnulib_modules="$gnulib_modules environ"
# -> GSocket
gnulib_modules="$gnulib_modules fcntl"
# -> conditional build avoid win32
gnulib_modules="$gnulib_modules fcntl-h"
# -> GSocket
gnulib_modules="$gnulib_modules getaddrinfo"
# -> copy gnuliub win32 impl
gnulib_modules="$gnulib_modules getpass"
# -> GSocket
gnulib_modules="$gnulib_modules getpeername"
# -> GSocket
gnulib_modules="$gnulib_modules getsockname"
# -> copy gnulib STRBUFLEN macro
gnulib_modules="$gnulib_modules intprops"
# -> GSocket
gnulib_modules="$gnulib_modules ioctl"
# -> Meson
gnulib_modules="$gnulib_modules largefile"
# -> GSocket
gnulib_modules="$gnulib_modules listen"
# -> custom configure check
gnulib_modules="$gnulib_modules localeconv"
# -> Meson
gnulib_modules="$gnulib_modules manywarnings"
# -> painful copy gnulib
gnulib_modules="$gnulib_modules mgetgroups"
# -> GSocket
gnulib_modules="$gnulib_modules net_if"
# -> GSocket
gnulib_modules="$gnulib_modules netdb"
# -> GSocket
gnulib_modules="$gnulib_modules nonblocking"
# -> Just add -lutil to cli
gnulib_modules="$gnulib_modules openpty"
# -> GSocket
gnulib_modules="$gnulib_modules passfd"
# -> open code / copy gnulib code
gnulib_modules="$gnulib_modules physmem"
# -> open code / conditional comp
gnulib_modules="$gnulib_modules pipe-posix"
# -> open code / conditional comp
gnulib_modules="$gnulib_modules pipe2"
# -> GMainLoop
gnulib_modules="$gnulib_modules poll"
# -> Meson
gnulib_modules="$gnulib_modules posix-shell"
# -> open code conditional logic
gnulib_modules="$gnulib_modules pthread_sigmask"
# -> GSocket
gnulib_modules="$gnulib_modules recv"
# -> GSocket
gnulib_modules="$gnulib_modules send"
# -> GSocket
gnulib_modules="$gnulib_modules setsockopt"
# -> open code conditional logic
gnulib_modules="$gnulib_modules sigaction"
# -> open code conditional logic
gnulib_modules="$gnulib_modules sigpipe"
# -> GSocket
gnulib_modules="$gnulib_modules socket"
# -> open code conditional or use GIO GFileInfo
gnulib_modules="$gnulib_modules stat-time"
# -> remove use or open-code it. possibly add to glib
gnulib_modules="$gnulib_modules strchrnul"
# -> g_strsplit
gnulib_modules="$gnulib_modules strtok_r"
# -> remove sys/stat.h include from any win32 code paths
gnulib_modules="$gnulib_modules sys_stat"
# -> remove sys/wait.h include from any win32 code paths
gnulib_modules="$gnulib_modules sys_wait"
# -> remove from any win32 code paths
gnulib_modules="$gnulib_modules termios"
# -> GDateTime ?
gnulib_modules="$gnulib_modules time_r"
# -> obsolete - exists on Linux, MacOS >= ?? & FreeBSD >= 6
gnulib_modules="$gnulib_modules ttyname_r"
# -> g_get_os_info in GLib 2.64 but can't use that yet
gnulib_modules="$gnulib_modules uname"
# -> G_STATIC_ASSERT
gnulib_modules="$gnulib_modules verify"
# -> remove from Win32 code paths
gnulib_modules="$gnulib_modules waitpid"
# -> Meson
gnulib_modules="$gnulib_modules warnings"
# -> open code impl
gnulib_modules="$gnulib_modules wcwidth"
gnulib_modules='
accept
areadlink
autobuild
base64
bind
bitrotate
byteswap
c-ctype
c-strcase
c-strcasestr
calloc-posix
canonicalize-lgpl
chown
clock-time
close
connect
configmake
count-leading-zeros
count-one-bits
dirname-lgpl
environ
execinfo
fclose
fcntl
fcntl-h
fdatasync
ffs
ffsl
fnmatch
fsync
func
getaddrinfo
getcwd-lgpl
gethostname
getopt-posix
getpass
getpeername
getsockname
gettimeofday
gitlog-to-changelog
gnumakefile
ignore-value
inet_pton
intprops
ioctl
isatty
largefile
ldexp
listen
localeconv
maintainer-makefile
manywarnings
mgetgroups
mkdtemp
mkostemp
mkostemps
mktempd
net_if
netdb
nonblocking
openpty
passfd
perror
physmem
pipe-posix
pipe2
poll
posix-shell
pthread
pthread_sigmask
recv
regex
sched
secure_getenv
send
setenv
setsockopt
sigaction
sigpipe
snprintf
socket
stat-time
stdarg
stpcpy
strchrnul
strdup-posix
strndup
strerror
strerror_r-posix
strptime
strsep
strtok_r
sys_stat
sys_wait
termios
time_r
timegm
ttyname_r
uname
unsetenv
useless-if-before-free
usleep
vasprintf
verify
vc-list-files
vsnprintf
waitpid
warnings
wcwidth
'
SKIP_PO=true
@@ -172,8 +176,8 @@ xmllint -
xsltproc -
"
# Automake requires that AUTHORS exist.
touch AUTHORS || exit 1
# Automake requires that ChangeLog and AUTHORS exist.
touch AUTHORS ChangeLog || exit 1
# Override bootstrap's list - we don't use mdate-sh or texinfo.tex.
gnulib_extra_files="
@@ -193,9 +197,3 @@ bootstrap_post_import_hook()
sed 's,\.\./\.\./\.\.,../..,g; s/^TESTS /GNULIB_TESTS /' $m > $m-t
mv -f $m-t $m
}
bootstrap_epilogue()
{
echo "$0: done. Now you can run 'mkdir build && cd build && ../configure'."
exit 0
}

68
build-aux/augeas-gentest.pl Executable file
View File

@@ -0,0 +1,68 @@
#!/usr/bin/env perl
#
# augeas-gentest.pl: Generate an augeas test file, from an
# example config file + test file template
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
#
# This library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library. If not, see
# <http://www.gnu.org/licenses/>.
use strict;
use warnings;
die "syntax: $0 CONFIG TEMPLATE AUGTEST\n" unless @ARGV == 3;
my $config = shift @ARGV;
my $template = shift @ARGV;
my $augtest = shift @ARGV;
open AUGTEST, ">", $augtest or die "cannot create $augtest: $!";
$SIG{__DIE__} = sub {
unlink $augtest;
};
open CONFIG, "<", $config or die "cannot read $config: $!";
open TEMPLATE, "<", $template or die "cannot read $template: $!";
my $group = 0;
while (<TEMPLATE>) {
if (/::CONFIG::/) {
my $group = 0;
print AUGTEST " let conf = \"";
while (<CONFIG>) {
if (/^#\w/) {
s/^#//;
s/\"/\\\"/g;
print AUGTEST $_;
$group = /\[\s$/;
} elsif ($group) {
s/\"/\\\"/g;
if (/#\s*\]/) {
$group = 0;
}
if (/^#/) {
s/^#//;
print AUGTEST $_;
}
}
}
print AUGTEST "\"\n";
} else {
print AUGTEST $_;
}
}
close TEMPLATE;
close CONFIG;
close AUGTEST or die "cannot save $augtest: $!";

156
build-aux/header-ifdef.pl Normal file
View File

@@ -0,0 +1,156 @@
#!/usr/bin/perl
#
# Validate that header files follow a standard layout:
#
# /*
# ...copyright header...
# */
# <one blank line>
# #ifndef SYMBOL
# # define SYMBOL
# ....content....
# #endif /* SYMBOL */
#
# For any file ending priv.h, before the #ifndef
# We will have a further section
#
# #ifndef SYMBOL_ALLOW
# # error ....
# #endif /* SYMBOL_ALLOW */
# <one blank line>
use strict;
use warnings;
my $STATE_COPYRIGHT_COMMENT = 0;
my $STATE_COPYRIGHT_BLANK = 1;
my $STATE_PRIV_START = 2;
my $STATE_PRIV_ERROR = 3;
my $STATE_PRIV_END = 4;
my $STATE_PRIV_BLANK = 5;
my $STATE_GUARD_START = 6;
my $STATE_GUARD_DEFINE = 7;
my $STATE_GUARD_END = 8;
my $STATE_EOF = 9;
my $file = " ";
my $ret = 0;
my $ifdef = "";
my $ifdefpriv = "";
my $state = $STATE_EOF;
my $mistake = 0;
sub mistake {
my $msg = shift;
warn $msg;
$mistake = 1;
$ret = 1;
}
while (<>) {
if (not $file eq $ARGV) {
if ($state == $STATE_COPYRIGHT_COMMENT) {
&mistake("$file: missing copyright comment");
} elsif ($state == $STATE_COPYRIGHT_BLANK) {
&mistake("$file: missing blank line after copyright header");
} elsif ($state == $STATE_PRIV_START) {
&mistake("$file: missing '#ifndef $ifdefpriv'");
} elsif ($state == $STATE_PRIV_ERROR) {
&mistake("$file: missing '# error ...priv allow...'");
} elsif ($state == $STATE_PRIV_END) {
&mistake("$file: missing '#endif /* $ifdefpriv */'");
} elsif ($state == $STATE_PRIV_BLANK) {
&mistake("$file: missing blank line after priv header check");
} elsif ($state == $STATE_GUARD_START) {
&mistake("$file: missing '#ifndef $ifdef'");
} elsif ($state == $STATE_GUARD_DEFINE) {
&mistake("$file: missing '# define $ifdef'");
} elsif ($state == $STATE_GUARD_END) {
&mistake("$file: missing '#endif /* $ifdef */'");
}
$ifdef = uc $ARGV;
$ifdef =~ s,.*/,,;
$ifdef =~ s,[^A-Z0-9],_,g;
$ifdef =~ s,__+,_,g;
unless ($ifdef =~ /^LIBVIRT_/ && $ARGV !~ /libvirt_internal.h/) {
$ifdef = "LIBVIRT_" . $ifdef;
}
$ifdefpriv = $ifdef . "_ALLOW";
$file = $ARGV;
$state = $STATE_COPYRIGHT_COMMENT;
$mistake = 0;
}
if ($mistake ||
$ARGV =~ /config-post\.h$/ ||
$ARGV =~ /vbox_(CAPI|XPCOM)/) {
$state = $STATE_EOF;
next;
}
if ($state == $STATE_COPYRIGHT_COMMENT) {
if (m,\*/,) {
$state = $STATE_COPYRIGHT_BLANK;
}
} elsif ($state == $STATE_COPYRIGHT_BLANK) {
if (! /^$/) {
&mistake("$file: missing blank line after copyright header");
}
if ($ARGV =~ /priv\.h$/) {
$state = $STATE_PRIV_START;
} else {
$state = $STATE_GUARD_START;
}
} elsif ($state == $STATE_PRIV_START) {
if (/^$/) {
&mistake("$file: too many blank lines after coyright header");
} elsif (/#ifndef $ifdefpriv$/) {
$state = $STATE_PRIV_ERROR;
} else {
&mistake("$file: missing '#ifndef $ifdefpriv'");
}
} elsif ($state == $STATE_PRIV_ERROR) {
if (/# error ".*"$/) {
$state = $STATE_PRIV_END;
} else {
&mistake("$file: missing '#error ...priv allow...'");
}
} elsif ($state == $STATE_PRIV_END) {
if (m,#endif /\* $ifdefpriv \*/,) {
$state = $STATE_PRIV_BLANK;
} else {
&mistake("$file: missing '#endif /* $ifdefpriv */'");
}
} elsif ($state == $STATE_PRIV_BLANK) {
if (! /^$/) {
&mistake("$file: missing blank line after priv guard");
}
$state = $STATE_GUARD_START;
} elsif ($state == $STATE_GUARD_START) {
if (/^$/) {
&mistake("$file: too many blank lines after coyright header");
} elsif (/#ifndef $ifdef$/) {
$state = $STATE_GUARD_DEFINE;
} else {
&mistake("$file: missing '#ifndef $ifdef'");
}
} elsif ($state == $STATE_GUARD_DEFINE) {
if (/# define $ifdef$/) {
$state = $STATE_GUARD_END;
} else {
&mistake("$file: missing '# define $ifdef'");
}
} elsif ($state == $STATE_GUARD_END) {
if (m,#endif /\* $ifdef \*/$,) {
$state = $STATE_EOF;
}
} elsif ($state == $STATE_EOF) {
die "$file: unexpected content after '#endif /* $ifdef */'";
} else {
die "$file: unexpected state $state";
}
}
exit $ret;

37
build-aux/minimize-po.pl Executable file
View File

@@ -0,0 +1,37 @@
#!/usr/bin/perl
my @block;
my $msgstr = 0;
my $empty = 0;
my $unused = 0;
my $fuzzy = 0;
while (<>) {
if (/^$/) {
if (!$empty && !$unused && !$fuzzy) {
print @block;
}
@block = ();
$msgstr = 0;
$fuzzy = 0;
push @block, $_;
} else {
if (/^msgstr/) {
$msgstr = 1;
$empty = 1;
}
if (/^#.*fuzzy/) {
$fuzzy = 1;
}
if (/^#~ msgstr/) {
$unused = 1;
}
if ($msgstr && /".+"/) {
$empty = 0;
}
push @block, $_;
}
}
if (@block && !$empty && !$unused) {
print @block;
}

View File

@@ -0,0 +1,72 @@
#!/usr/bin/env perl
my %noninlined;
my %mocked;
# Functions in public header don't get the noinline annotation
# so whitelist them here
$noninlined{"virEventAddTimeout"} = 1;
foreach my $arg (@ARGV) {
if ($arg =~ /\.h$/) {
#print "Scan header $arg\n";
&scan_annotations($arg);
} elsif ($arg =~ /mock\.c$/) {
#print "Scan mock $arg\n";
&scan_overrides($arg);
}
}
my $warned = 0;
foreach my $func (keys %mocked) {
next if exists $noninlined{$func};
$warned++;
print STDERR "$func is mocked at $mocked{$func} but missing noinline annotation\n";
}
exit $warned ? 1 : 0;
sub scan_annotations {
my $file = shift;
open FH, $file or die "cannot read $file: $!";
my $func;
while (<FH>) {
if (/^\s*(\w+)\(/ || /^(?:\w+\*?\s+)+(?:\*\s*)?(\w+)\(/) {
my $name = $1;
if ($name !~ /ATTRIBUTE/) {
$func = $name;
}
} elsif (/^\s*$/) {
$func = undef;
}
if (/ATTRIBUTE_NOINLINE/) {
if (defined $func) {
$noninlined{$func} = 1;
}
}
}
close FH
}
sub scan_overrides {
my $file = shift;
open FH, $file or die "cannot read $file: $!";
my $func;
while (<FH>) {
if (/^(\w+)\(/ || /^\w+\s*(?:\*\s*)?(\w+)\(/) {
my $name = $1;
if ($name =~ /^vir/) {
$mocked{$name} = "$file:$.";
}
}
}
close FH
}

View File

@@ -0,0 +1,26 @@
#!/usr/bin/env perl
use strict;
my $file = " ";
my $ret = 0;
my %includes = ( );
my $lineno = 0;
while (<>) {
if (not $file eq $ARGV) {
%includes = ( );
$file = $ARGV;
$lineno = 0;
}
$lineno++;
if (/^# *include *[<"]([^>"]*\.h)[">]/) {
$includes{$1}++;
if ($includes{$1} == 2) {
$ret = 1;
print STDERR "$ARGV:$lineno: $_";
print STDERR "Do not include a header more than once per file\n";
}
}
}
exit $ret;

File diff suppressed because it is too large Load Diff

View File

@@ -1,226 +0,0 @@
#!/bin/sh
#! -*-perl-*-
# Detect instances of "if (p) free (p);".
# Likewise "if (p != 0)", "if (0 != p)", or with NULL; and with braces.
# Copyright (C) 2008-2019 Free Software Foundation, Inc.
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <https://www.gnu.org/licenses/>.
#
# Written by Jim Meyering
# This is a prologue that allows to run a perl script as an executable
# on systems that are compliant to a POSIX version before POSIX:2017.
# On such systems, the usual invocation of an executable through execlp()
# or execvp() fails with ENOEXEC if it is a script that does not start
# with a #! line. The script interpreter mentioned in the #! line has
# to be /bin/sh, because on GuixSD systems that is the only program that
# has a fixed file name. The second line is essential for perl and is
# also useful for editing this file in Emacs. The next two lines below
# are valid code in both sh and perl. When executed by sh, they re-execute
# the script through the perl program found in $PATH. The '-x' option
# is essential as well; without it, perl would re-execute the script
# through /bin/sh. When executed by perl, the next two lines are a no-op.
eval 'exec perl -wSx "$0" "$@"'
if 0;
my $VERSION = '2018-03-07 03:47'; # UTC
# The definition above must lie within the first 8 lines in order
# for the Emacs time-stamp write hook (at end) to update it.
# If you change this file with Emacs, please let the write hook
# do its job. Otherwise, update this string manually.
use strict;
use warnings;
use Getopt::Long;
(my $ME = $0) =~ s|.*/||;
# use File::Coda; # https://meyering.net/code/Coda/
END {
defined fileno STDOUT or return;
close STDOUT and return;
warn "$ME: failed to close standard output: $!\n";
$? ||= 1;
}
sub usage ($)
{
my ($exit_code) = @_;
my $STREAM = ($exit_code == 0 ? *STDOUT : *STDERR);
if ($exit_code != 0)
{
print $STREAM "Try '$ME --help' for more information.\n";
}
else
{
print $STREAM <<EOF;
Usage: $ME [OPTIONS] FILE...
Detect any instance in FILE of a useless "if" test before a free call, e.g.,
"if (p) free (p);". Any such test may be safely removed without affecting
the semantics of the C code in FILE. Use --name=FOO --name=BAR to also
detect free-like functions named FOO and BAR.
OPTIONS:
--list print only the name of each matching FILE (\\0-terminated)
--name=N add name N to the list of \'free\'-like functions to detect;
may be repeated
--help display this help and exit
--version output version information and exit
Exit status:
0 one or more matches
1 no match
2 an error
EXAMPLE:
For example, this command prints all removable "if" tests before "free"
and "kfree" calls in the linux kernel sources:
git ls-files -z |xargs -0 $ME --name=kfree
EOF
}
exit $exit_code;
}
sub is_NULL ($)
{
my ($expr) = @_;
return ($expr eq 'NULL' || $expr eq '0');
}
{
sub EXIT_MATCH {0}
sub EXIT_NO_MATCH {1}
sub EXIT_ERROR {2}
my $err = EXIT_NO_MATCH;
my $list;
my @name = qw(free);
GetOptions
(
help => sub { usage 0 },
version => sub { print "$ME version $VERSION\n"; exit },
list => \$list,
'name=s@' => \@name,
) or usage 1;
# Make sure we have the right number of non-option arguments.
# Always tell the user why we fail.
@ARGV < 1
and (warn "$ME: missing FILE argument\n"), usage EXIT_ERROR;
my $or = join '|', @name;
my $regexp = qr/(?:$or)/;
# Set the input record separator.
# Note: this makes it impractical to print line numbers.
$/ = '"';
my $found_match = 0;
FILE:
foreach my $file (@ARGV)
{
open FH, '<', $file
or (warn "$ME: can't open '$file' for reading: $!\n"),
$err = EXIT_ERROR, next;
while (defined (my $line = <FH>))
{
# Skip non-matching lines early to save time
$line =~ /\bif\b/
or next;
while ($line =~
/\b(if\s*\(\s*([^)]+?)(?:\s*!=\s*([^)]+?))?\s*\)
# 1 2 3
(?: \s*$regexp\s*\((?:\s*\([^)]+\))?\s*([^)]+)\)\s*;|
\s*\{\s*$regexp\s*\((?:\s*\([^)]+\))?\s*([^)]+)\)\s*;\s*\}))/sxg)
{
my $all = $1;
my ($lhs, $rhs) = ($2, $3);
my ($free_opnd, $braced_free_opnd) = ($4, $5);
my $non_NULL;
if (!defined $rhs) { $non_NULL = $lhs }
elsif (is_NULL $rhs) { $non_NULL = $lhs }
elsif (is_NULL $lhs) { $non_NULL = $rhs }
else { next }
# Compare the non-NULL part of the "if" expression and the
# free'd expression, without regard to white space.
$non_NULL =~ tr/ \t//d;
my $e2 = defined $free_opnd ? $free_opnd : $braced_free_opnd;
$e2 =~ tr/ \t//d;
if ($non_NULL eq $e2)
{
$found_match = 1;
$list
and (print "$file\0"), next FILE;
print "$file: $all\n";
}
}
}
}
continue
{
close FH;
}
$found_match && $err == EXIT_NO_MATCH
and $err = EXIT_MATCH;
exit $err;
}
my $foo = <<'EOF';
# The above is to *find* them.
# This adjusts them, removing the unnecessary "if (p)" part.
# FIXME: do something like this as an option (doesn't do braces):
free=xfree
git grep -l -z "$free *(" \
| xargs -0 useless-if-before-free -l --name="$free" \
| xargs -0 perl -0x3b -pi -e \
's/\bif\s*\(\s*(\S+?)(?:\s*!=\s*(?:0|NULL))?\s*\)\s+('"$free"'\s*\((?:\s*\([^)]+\))?\s*\1\s*\)\s*;)/$2/s'
# Use the following to remove redundant uses of kfree inside braces.
# Note that -0777 puts perl in slurp-whole-file mode;
# but we have plenty of memory, these days...
free=kfree
git grep -l -z "$free *(" \
| xargs -0 useless-if-before-free -l --name="$free" \
| xargs -0 perl -0777 -pi -e \
's/\bif\s*\(\s*(\S+?)(?:\s*!=\s*(?:0|NULL))?\s*\)\s*\{\s*('"$free"'\s*\((?:\s*\([^)]+\))?\s*\1\s*\);)\s*\}[^\n]*$/$2/gms'
Be careful that the result of the above transformation is valid.
If the matched string is followed by "else", then obviously, it won't be.
When modifying files, refuse to process anything other than a regular file.
EOF
## Local Variables:
## mode: perl
## indent-tabs-mode: nil
## eval: (add-hook 'before-save-hook 'time-stamp)
## time-stamp-line-limit: 50
## time-stamp-start: "my $VERSION = '"
## time-stamp-format: "%:y-%02m-%02d %02H:%02M"
## time-stamp-time-zone: "UTC0"
## time-stamp-end: "'; # UTC"
## End:

View File

@@ -1,113 +0,0 @@
#!/bin/sh
# List version-controlled file names.
# Print a version string.
scriptversion=2018-03-07.03; # UTC
# Copyright (C) 2006-2019 Free Software Foundation, Inc.
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <https://www.gnu.org/licenses/>.
# List the specified version-controlled files.
# With no argument, list them all. With a single DIRECTORY argument,
# list the version-controlled files in that directory.
# If there's an argument, it must be a single, "."-relative directory name.
# cvsu is part of the cvsutils package: http://www.red-bean.com/cvsutils/
postprocess=
case $1 in
--help) cat <<EOF
Usage: $0 [-C SRCDIR] [DIR...]
Output a list of version-controlled files in DIR (default .), relative to
SRCDIR (default .). SRCDIR must be the top directory of a checkout.
Options:
--help print this help, then exit
--version print version number, then exit
-C SRCDIR change directory to SRCDIR before generating list
Report bugs and patches to <bug-gnulib@gnu.org>.
EOF
exit ;;
--version)
year=`echo "$scriptversion" | sed 's/[^0-9].*//'`
cat <<EOF
vc-list-files $scriptversion
Copyright (C) $year Free Software Foundation, Inc,
License GPLv3+: GNU GPL version 3 or later <https://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
EOF
exit ;;
-C)
test "$2" = . || postprocess="| sed 's|^|$2/|'"
cd "$2" || exit 1
shift; shift ;;
esac
test $# = 0 && set .
for dir
do
if test -d .git || test -f .git; then
test "x$dir" = x. \
&& dir= sed_esc= \
|| { dir="$dir/"; sed_esc=`echo "$dir"|env sed 's,\([\\/]\),\\\\\1,g'`; }
# Ignore git symlinks - either they point into the tree, in which case
# we don't need to visit the target twice, or they point somewhere
# else (often into a submodule), in which case the content does not
# belong to this package.
eval exec git ls-tree -r 'HEAD:"$dir"' \
\| sed -n '"s/^100[^ ]*./$sed_esc/p"' $postprocess
elif test -d .hg; then
eval exec hg locate '"$dir/*"' $postprocess
elif test -d .bzr; then
test "$postprocess" = '' && postprocess="| sed 's|^\./||'"
eval exec bzr ls -R --versioned '"$dir"' $postprocess
elif test -d CVS; then
test "$postprocess" = '' && postprocess="| sed 's|^\./||'"
if test -x build-aux/cvsu; then
eval build-aux/cvsu --find --types=AFGM '"$dir"' $postprocess
elif (cvsu --help) >/dev/null 2>&1; then
eval cvsu --find --types=AFGM '"$dir"' $postprocess
else
eval awk -F/ \''{ \
if (!$1 && $3 !~ /^-/) { \
f=FILENAME; \
if (f ~ /CVS\/Entries$/) \
f = substr(f, 1, length(f)-11); \
print f $2; \
}}'\'' \
`find "$dir" -name Entries -print` /dev/null' $postprocess
fi
elif test -d .svn; then
eval exec svn list -R '"$dir"' $postprocess
else
echo "$0: Failed to determine type of version control used in `pwd`" 1>&2
exit 1
fi
done
# Local variables:
# eval: (add-hook 'before-save-hook 'time-stamp)
# time-stamp-start: "scriptversion="
# time-stamp-format: "%:y-%02m-%02d.%02H"
# time-stamp-time-zone: "UTC0"
# time-stamp-end: "; # UTC"
# End:

1330
cfg.mk Normal file

File diff suppressed because it is too large Load Diff

View File

@@ -1,268 +0,0 @@
# -*- makefile -*-
# vim: filetype=make
# The root directory of the libvirt.git checkout
CI_GIT_ROOT = $(shell git rev-parse --show-toplevel)
# The root directory for all CI-related contents
CI_ROOTDIR = $(CI_GIT_ROOT)/ci
# The directory holding content on the host that we will
# expose to the container.
CI_SCRATCHDIR = $(CI_ROOTDIR)/scratch
# The directory holding the clone of the git repo that
# we will expose to the container
CI_HOST_SRCDIR = $(CI_SCRATCHDIR)/src
# The directory holding the source inside the
# container, i.e. where we want to expose
# the $(CI_HOST_SRCDIR) directory from the host
CI_CONT_SRCDIR = $(CI_USER_HOME)/libvirt
# Relative directory to perform the build in. This
# defaults to using a separate build dir, but can be
# set to empty string for an in-source tree build.
CI_VPATH = build
# The directory holding the build output inside the
# container.
CI_CONT_BUILDDIR = $(CI_CONT_SRCDIR)/$(CI_VPATH)
# Can be overridden with mingw{32,64}-configure if desired
CI_CONFIGURE = $(CI_CONT_SRCDIR)/configure
# Default to using all possible CPUs
CI_SMP = $(shell getconf _NPROCESSORS_ONLN)
# Any extra arguments to pass to make
CI_MAKE_ARGS =
# Any extra arguments to pass to configure
CI_CONFIGURE_ARGS =
# Script containing environment preparation steps
CI_PREPARE_SCRIPT = $(CI_ROOTDIR)/prepare.sh
# Script containing build instructions
CI_BUILD_SCRIPT = $(CI_ROOTDIR)/build.sh
# Location of the container images we're going to pull
# Can be useful to overridde to use a locally built
# image instead
CI_IMAGE_PREFIX = quay.io/libvirt/buildenv-libvirt-
# The default tag is ':latest' but if the container
# repo above uses different conventions this can override it
CI_IMAGE_TAG = :latest
# We delete the virtual root after completion, set
# to 0 if you need to keep it around for debugging
CI_CLEAN = 1
# We'll always freshly clone the virtual root each
# time in case it was not cleaned up before. Set
# to 1 if you want to try restarting a previously
# preserved env
CI_REUSE = 0
# We need the container process to run with current host IDs
# so that it can access the passed in build directory
CI_UID = $(shell id -u)
CI_GID = $(shell id -g)
# We also need the user's login and home directory to prepare the
# environment the way some programs expect it
CI_USER_LOGIN = $(shell echo "$$USER")
CI_USER_HOME = $(shell echo "$$HOME")
CI_ENGINE = auto
# Container engine we are going to use, can be overridden per make
# invocation, if it is not we try podman and then default to docker.
ifeq ($(CI_ENGINE),auto)
override CI_ENGINE = $(shell podman version >/dev/null 2>&1 && echo podman || echo docker)
endif
# IDs you run as do not need to exist in
# the container's /etc/passwd & /etc/group files, but
# if they do not, then libvirt's 'make check' will fail
# many tests.
# We do not directly mount /etc/{passwd,group} as Docker
# is liable to mess with SELinux labelling which will
# then prevent the host accessing them. And podman cannot
# relabel the files due to it running rootless. So
# copying them first is safer and less error-prone.
CI_PWDB_MOUNTS = \
--volume $(CI_SCRATCHDIR)/group:/etc/group:ro,z \
--volume $(CI_SCRATCHDIR)/passwd:/etc/passwd:ro,z \
$(NULL)
CI_HOME_MOUNTS = \
--volume $(CI_SCRATCHDIR)/home:$(CI_USER_HOME):z \
$(NULL)
CI_SCRIPT_MOUNTS = \
--volume $(CI_SCRATCHDIR)/prepare:$(CI_USER_HOME)/prepare:z \
--volume $(CI_SCRATCHDIR)/build:$(CI_USER_HOME)/build:z \
$(NULL)
# Docker containers can have very large ulimits
# for nofiles - as much as 1048576. This makes
# libvirt very slow at exec'ing programs.
CI_ULIMIT_FILES = 1024
ifeq ($(CI_ENGINE),podman)
# Podman cannot reuse host namespace when running non-root
# containers. Until support for --keep-uid is added we can
# just create another mapping that will do that for us.
# Beware, that in {uid,git}map=container_id:host_id:range, the
# host_id does actually refer to the uid in the first mapping
# where 0 (root) is mapped to the current user and rest is
# offset.
#
# In order to set up this mapping, we need to keep all the
# user IDs to prevent possible errors as some images might
# expect UIDs up to 90000 (looking at you fedora), so we don't
# want the overflowuid to be used for them. For mapping all
# the other users properly, some math needs to be done.
# Don't worry, it's just addition and subtraction.
#
# 65536 ought to be enough (tm), but for really rare cases the
# maximums might need to be higher, but that only happens when
# your /etc/sub{u,g}id allow users to have more IDs. Unless
# --keep-uid is supported, let's do this in a way that should
# work for everyone.
CI_MAX_UID = $(shell sed -n "s/^$(CI_USER_LOGIN):[^:]\+://p" /etc/subuid)
CI_MAX_GID = $(shell sed -n "s/^$(CI_USER_LOGIN):[^:]\+://p" /etc/subgid)
ifeq ($(CI_MAX_UID),)
CI_MAX_UID = 65536
endif
ifeq ($(CI_MAX_GID),)
CI_MAX_GID = 65536
endif
CI_UID_OTHER = $(shell echo $$(($(CI_UID)+1)))
CI_GID_OTHER = $(shell echo $$(($(CI_GID)+1)))
CI_UID_OTHER_RANGE = $(shell echo $$(($(CI_MAX_UID)-$(CI_UID))))
CI_GID_OTHER_RANGE = $(shell echo $$(($(CI_MAX_GID)-$(CI_GID))))
CI_PODMAN_ARGS = \
--uidmap 0:1:$(CI_UID) \
--uidmap $(CI_UID):0:1 \
--uidmap $(CI_UID_OTHER):$(CI_UID_OTHER):$(CI_UID_OTHER_RANGE) \
--gidmap 0:1:$(CI_GID) \
--gidmap $(CI_GID):0:1 \
--gidmap $(CI_GID_OTHER):$(CI_GID_OTHER):$(CI_GID_OTHER_RANGE) \
$(NULL)
endif
# Args to use when cloning a git repo.
# -c stop it complaining about checking out a random hash
# -q stop it displaying progress info for local clone
# --local ensure we don't actually copy files
CI_GIT_ARGS = \
-c advice.detachedHead=false \
-q \
--local \
$(NULL)
# Args to use when running the container
# --rm stop inactive containers getting left behind
# --user we execute as the same user & group account
# as dev so that file ownership matches host
# instead of root:root
# --volume to pass in the cloned git repo & config
# --ulimit lower files limit for performance reasons
# --interactive
# --tty Ensure we have ability to Ctrl-C the build
CI_ENGINE_ARGS = \
--rm \
--interactive \
--tty \
$(CI_PODMAN_ARGS) \
$(CI_PWDB_MOUNTS) \
$(CI_HOME_MOUNTS) \
$(CI_SCRIPT_MOUNTS) \
--volume $(CI_HOST_SRCDIR):$(CI_CONT_SRCDIR):z \
--ulimit nofile=$(CI_ULIMIT_FILES):$(CI_ULIMIT_FILES) \
--cap-add=SYS_PTRACE \
$(NULL)
ci-check-engine:
@echo -n "Checking if $(CI_ENGINE) is available..." && \
$(CI_ENGINE) version 1>/dev/null && echo "yes"
ci-prepare-tree: ci-check-engine
@test "$(CI_REUSE)" != "1" && rm -rf $(CI_SCRATCHDIR) || :
@if ! test -d $(CI_SCRATCHDIR) ; then \
mkdir -p $(CI_SCRATCHDIR); \
cp /etc/passwd $(CI_SCRATCHDIR); \
cp /etc/group $(CI_SCRATCHDIR); \
mkdir -p $(CI_SCRATCHDIR)/home; \
cp "$(CI_PREPARE_SCRIPT)" $(CI_SCRATCHDIR)/prepare; \
cp "$(CI_BUILD_SCRIPT)" $(CI_SCRATCHDIR)/build; \
chmod +x "$(CI_SCRATCHDIR)/prepare" "$(CI_SCRATCHDIR)/build"; \
echo "Cloning $(CI_GIT_ROOT) to $(CI_HOST_SRCDIR)"; \
git clone $(CI_GIT_ARGS) $(CI_GIT_ROOT) $(CI_HOST_SRCDIR) || exit 1; \
for mod in $$(git submodule | awk '{ print $$2 }' | sed -E 's,^../,,g') ; \
do \
test -f $(CI_GIT_ROOT)/$$mod/.git || continue ; \
echo "Cloning $(CI_GIT_ROOT)/$$mod to $(CI_HOST_SRCDIR)/$$mod"; \
git clone $(CI_GIT_ARGS) $(CI_GIT_ROOT)/$$mod $(CI_HOST_SRCDIR)/$$mod || exit 1; \
done ; \
fi
ci-run-command@%: ci-prepare-tree
$(CI_ENGINE) run $(CI_ENGINE_ARGS) $(CI_IMAGE_PREFIX)$*$(CI_IMAGE_TAG) \
/bin/bash -c ' \
$(CI_USER_HOME)/prepare || exit 1; \
sudo \
--login \
--user="#$(CI_UID)" \
--group="#$(CI_GID)" \
CI_CONT_SRCDIR="$(CI_CONT_SRCDIR)" \
CI_CONT_BUILDDIR="$(CI_CONT_BUILDDIR)" \
CI_SMP="$(CI_SMP)" \
CI_CONFIGURE="$(CI_CONFIGURE)" \
CI_CONFIGURE_ARGS="$(CI_CONFIGURE_ARGS)" \
CI_MAKE_ARGS="$(CI_MAKE_ARGS)" \
$(CI_COMMAND) || exit 1'
@test "$(CI_CLEAN)" = "1" && rm -rf $(CI_SCRATCHDIR) || :
ci-shell@%:
$(MAKE) -C $(CI_ROOTDIR) ci-run-command@$* CI_COMMAND="/bin/bash"
ci-build@%:
$(MAKE) -C $(CI_ROOTDIR) ci-run-command@$* CI_COMMAND="$(CI_USER_HOME)/build"
ci-check@%:
$(MAKE) -C $(CI_ROOTDIR) ci-build@$* CI_MAKE_ARGS="check"
ci-list-images:
@echo
@echo "Available x86 container images:"
@echo
@sh list-images.sh "$(CI_ENGINE)" "$(CI_IMAGE_PREFIX)" | grep -v cross
@echo
@echo "Available cross-compiler container images:"
@echo
@sh list-images.sh "$(CI_ENGINE)" "$(CI_IMAGE_PREFIX)" | grep cross
@echo
ci-help:
@echo "Build libvirt inside containers used for CI"
@echo
@echo "Available targets:"
@echo
@echo " ci-build@\$$IMAGE - run a default 'make'"
@echo " ci-check@\$$IMAGE - run a 'make check'"
@echo " ci-shell@\$$IMAGE - run an interactive shell"
@echo " ci-list-images - list available images"
@echo " ci-help - show this help message"
@echo
@echo "Available make variables:"
@echo
@echo " CI_CLEAN=0 - do not delete '$(CI_SCRATCHDIR)' after completion"
@echo " CI_REUSE=1 - re-use existing '$(CI_SCRATCHDIR)' content"
@echo " CI_ENGINE=auto - container engine to use (podman, docker)"
@echo

View File

@@ -1,40 +0,0 @@
# This script is used to build libvirt inside the container.
#
# You can customize it to your liking, or alternatively use a
# completely different script by passing
#
# CI_BUILD_SCRIPT=/path/to/your/build/script
#
# to make.
mkdir -p "$CI_CONT_BUILDDIR" || exit 1
cd "$CI_CONT_BUILDDIR"
export VIR_TEST_DEBUG=1
NOCONFIGURE=1 "$CI_CONT_SRCDIR/autogen.sh" || exit 1
# $CONFIGURE_OPTS is a env that can optionally be set in the container,
# populated at build time from the Dockerfile. A typical use case would
# be to pass --host/--target args to trigger cross-compilation
#
# This can be augmented by make local args in $CI_CONFIGURE_ARGS
"$CI_CONFIGURE" $CONFIGURE_OPTS $CI_CONFIGURE_ARGS
if test $? != 0; then
test -f config.log && cat config.log
exit 1
fi
find -name test-suite.log -delete
# gl_public_submodule_commit= to disable gnulib's submodule check
# which breaks due to way we clone the submodules
make -j"$CI_SMP" gl_public_submodule_commit= $CI_MAKE_ARGS
if test $? != 0; then \
LOGS=$(find -name test-suite.log)
if test "$LOGS"; then
echo "=== LOG FILE(S) START ==="
cat $LOGS
echo "=== LOG FILE(S) END ==="
fi
exit 1
fi

View File

@@ -1,26 +0,0 @@
#!/bin/sh
engine="$1"
prefix="$2"
do_podman() {
# Podman freaks out if the search term ends with a dash, which ours
# by default does, so let's strip it. The repository name is the
# second field in the output, and it already starts with the registry
podman search --limit 100 "${prefix%-}" | while read _ repo _; do
echo "$repo"
done
}
do_docker() {
# Docker doesn't include the registry name in the output, so we have
# to add it. The repository name is the first field in the output
registry="${prefix%%/*}"
docker search --limit 100 "$prefix" | while read repo _; do
echo "$registry/$repo"
done
}
"do_$engine" | grep "^$prefix" | sed "s,^$prefix,,g" | while read repo; do
echo " $repo"
done | sort -u

View File

@@ -1,13 +0,0 @@
# This script is used to prepare the environment that will be used
# to build libvirt inside the container.
#
# You can customize it to your liking, or alternatively use a
# completely different script by passing
#
# CI_PREPARE_SCRIPT=/path/to/your/prepare/script
#
# to make.
#
# Note that this script will have root privileges inside the
# container, so it can be used for things like installing additional
# packages.

View File

@@ -16,8 +16,64 @@
* <http://www.gnu.org/licenses/>.
*/
/*
* Since virt-login-shell will be setuid, we must do everything
* we can to avoid linking to other libraries. Many of them do
* unsafe things in functions marked __attribute__((constructor)).
* The only way to avoid such deps is to re-compile the
* functions with the code in question disabled, and for that we
* must override the main config.h rules. Hence this file :-(
*/
#ifdef LIBVIRT_SETUID_RPC_CLIENT
# undef HAVE_LIBNL
# undef HAVE_LIBNL3
# undef HAVE_LIBSASL2
# undef HAVE_SYS_ACL_H
# undef WITH_CAPNG
# undef WITH_CURL
# undef WITH_DBUS
# undef WITH_DEVMAPPER
# undef WITH_DTRACE_PROBES
# undef WITH_GNUTLS
# undef WITH_LIBSSH
# undef WITH_MACVTAP
# undef WITH_NUMACTL
# undef WITH_SASL
# undef WITH_SSH2
# undef WITH_SYSTEMD_DAEMON
# undef WITH_VIRTUALPORT
# undef WITH_YAJL
# undef WITH_YAJL2
#endif
/*
* With the NSS module it's the same story as virt-login-shell. See the
* explanation above.
*/
#ifdef LIBVIRT_NSS
# undef HAVE_LIBNL
# undef HAVE_LIBNL3
# undef HAVE_LIBSASL2
# undef HAVE_SYS_ACL_H
# undef WITH_CAPNG
# undef WITH_CURL
# undef WITH_DEVMAPPER
# undef WITH_DTRACE_PROBES
# undef WITH_GNUTLS
# undef WITH_LIBSSH
# undef WITH_MACVTAP
# undef WITH_NUMACTL
# undef WITH_SASL
# undef WITH_SSH2
# undef WITH_VIRTUALPORT
# undef WITH_SECDRIVER_SELINUX
# undef WITH_SECDRIVER_APPARMOR
# undef WITH_CAPNG
#endif /* LIBVIRT_NSS */
#ifndef __GNUC__
# error "Libvirt requires GCC >= 4.8, or CLang"
# error "Libvirt requires GCC >= 4.4, or CLang"
#endif
/*
@@ -32,30 +88,6 @@
((__GNUC__ << 16) + __GNUC_MINOR__ >= ((maj) << 16) + (min))
#endif
#if defined(__clang_major__) && defined(__clang_minor__)
# ifdef __apple_build_version__
# if __clang_major__ < 5 || (__clang_major__ == 5 && __clang_minor__ < 1)
# error You need at least XCode Clang v5.1 to compile QEMU
# endif
# else
# if __clang_major__ < 3 || (__clang_major__ == 3 && __clang_minor__ < 4)
# error You need at least Clang v3.4 to compile QEMU
# endif
# endif
#elif defined(__GNUC__) && defined(__GNUC_MINOR__)
# if __GNUC__ < 4 || (__GNUC__ == 4 && __GNUC_MINOR__ < 8)
# error You need at least GCC v4.8 to compile QEMU
# endif
#else
# error You either need at least GCC 4.8 or Clang 3.4 or XCode Clang 5.1 to compile libvirt
#if !(__GNUC_PREREQ(4, 4) || defined(__clang__))
# error "Libvirt requires GCC >= 4.4, or CLang"
#endif
/* Ask for warnings for anything that was marked deprecated in
* the defined version, or before. It is a candidate for rewrite.
*/
#define GLIB_VERSION_MIN_REQUIRED GLIB_VERSION_2_48
/* Ask for warnings if code tries to use function that did not
* exist in the defined version. These risk breaking builds
*/
#define GLIB_VERSION_MAX_ALLOWED GLIB_VERSION_2_48

View File

@@ -16,27 +16,15 @@ dnl You should have received a copy of the GNU Lesser General Public
dnl License along with this library. If not, see
dnl <http://www.gnu.org/licenses/>.
AC_INIT([libvirt], [6.0.0], [libvir-list@redhat.com], [], [https://libvirt.org])
if test $srcdir = "."
then
AC_MSG_ERROR([Build directory must be different from source directory])
fi
AC_INIT([libvirt], [5.0.0], [libvir-list@redhat.com], [], [https://libvirt.org])
AC_CONFIG_SRCDIR([src/libvirt.c])
AC_CONFIG_AUX_DIR([build-aux])
AC_CONFIG_HEADERS([config.h])
AH_BOTTOM([#include <config-post.h>])
AC_CONFIG_MACRO_DIR([m4])
dnl Make automake keep quiet about wildcards & other GNUmake-isms
AM_INIT_AUTOMAKE([
foreign
-Wno-portability
tar-pax
no-dist-gzip
dist-xz
subdir-objects
])
dnl Make automake keep quiet about wildcards & other GNUmake-isms; also keep
dnl quiet about the fact that we intentionally cater to automake 1.9
AM_INIT_AUTOMAKE([-Wno-portability -Wno-obsolete tar-pax no-dist-gzip dist-xz subdir-objects])
dnl older automake's default of ARFLAGS=cru is noisy on newer binutils;
dnl we don't really need the 'u' even in older toolchains. Then there is
dnl older libtool, which spelled it AR_FLAGS
@@ -129,29 +117,12 @@ AC_PROG_CC
AC_PROG_INSTALL
AC_PROG_CPP
dnl autoconf 2.70 adds a --runstatedir option so that downstreams
dnl can point to /run instead of the historic /var/run, but
dnl autoconf hasn't had a release since 2012.
dnl
dnl gnulib sets configmake.h to include runstatedir, but sets
dnl it to $localstatedir/run if $runstatedir env var is not set
dnl which is useless for apps that need to use /run without
dnl waiting for autoconf 2.70
dnl
dnl we introduce --with-runstatedir and then overwrite the
dnl value of $runstatedir so gnulib's configmake.h becomes useful
AC_ARG_WITH(
[runstatedir],
[AS_HELP_STRING(
[--with-runstatedir],
[State directory for temporary sockets, pid files, etc])])
if test -n "$with_runstatedir"
then
runstatedir=$with_runstatedir
dnl Setting AB_VERSION makes the 'autobuild' lines of configure output
dnl slightly more useful
if test -d $srcdir/.git && git --version >/dev/null 2>&1 ; then
AB_VERSION=`cd $srcdir && git describe --match 'v[[0-9]]*' 2>/dev/null`
fi
gl_EARLY
gl_INIT
@@ -203,13 +174,13 @@ want_ifconfig=no
dnl Make some notes about which OS we're compiling for, as the lxc and qemu
dnl drivers require linux headers, and storage_mpath, dtrace, and nwfilter
dnl are also linux specific. The "network" and storage_fs drivers are known
dnl to not work on macOS presently, so we also make a note if compiling
dnl to not work on MacOS X presently, so we also make a note if compiling
dnl for that
with_linux=no with_macos=no with_freebsd=no with_win=no with_cygwin=no
with_linux=no with_osx=no with_freebsd=no with_win=no with_cygwin=no
case $host in
*-*-linux*) with_linux=yes ;;
*-*-darwin*) with_macos=yes ;;
*-*-darwin*) with_osx=yes ;;
*-*-freebsd*) with_freebsd=yes ;;
*-*-mingw* | *-*-msvc* ) with_win=yes ;;
*-*-cygwin*) with_cygwin=yes ;;
@@ -235,7 +206,6 @@ fi
AM_CONDITIONAL([WITH_LINUX], [test "$with_linux" = "yes"])
AM_CONDITIONAL([WITH_FREEBSD], [test "$with_freebsd" = "yes"])
AM_CONDITIONAL([WITH_MACOS], [test "$with_macos" = "yes"])
# We don't support the daemon yet
if test "$with_win" = "yes" ; then
@@ -269,13 +239,13 @@ LIBVIRT_LINKER_NO_UNDEFINED
LIBVIRT_ARG_APPARMOR
LIBVIRT_ARG_ATTR
LIBVIRT_ARG_AUDIT
LIBVIRT_ARG_AVAHI
LIBVIRT_ARG_BASH_COMPLETION
LIBVIRT_ARG_BLKID
LIBVIRT_ARG_CAPNG
LIBVIRT_ARG_CURL
LIBVIRT_ARG_DBUS
LIBVIRT_ARG_FIREWALLD
LIBVIRT_ARG_FIREWALLD_ZONE
LIBVIRT_ARG_FUSE
LIBVIRT_ARG_GLUSTER
LIBVIRT_ARG_HAL
@@ -307,6 +277,7 @@ LIBVIRT_CHECK_APPARMOR
LIBVIRT_CHECK_ATOMIC
LIBVIRT_CHECK_ATTR
LIBVIRT_CHECK_AUDIT
LIBVIRT_CHECK_AVAHI
LIBVIRT_CHECK_BASH_COMPLETION
LIBVIRT_CHECK_BLKID
LIBVIRT_CHECK_CAPNG
@@ -315,9 +286,7 @@ LIBVIRT_CHECK_DBUS
LIBVIRT_CHECK_DEVMAPPER
LIBVIRT_CHECK_DLOPEN
LIBVIRT_CHECK_FIREWALLD
LIBVIRT_CHECK_FIREWALLD_ZONE
LIBVIRT_CHECK_FUSE
LIBVIRT_CHECK_GLIB
LIBVIRT_CHECK_GLUSTER
LIBVIRT_CHECK_GNUTLS
LIBVIRT_CHECK_HAL
@@ -362,7 +331,6 @@ AC_CHECK_FUNCS_ONCE([\
getpwuid_r \
getrlimit \
getuid \
getutxid \
if_indextoname \
mmap \
newlocale \
@@ -438,6 +406,19 @@ dnl
LIBVIRT_CHECK_EXTERNAL_PROGRAMS
dnl Specific dir for HTML output ?
LIBVIRT_ARG_WITH([HTML_DIR], [path to base html directory],
['$(datadir)/doc'])
LIBVIRT_ARG_WITH([HTML_SUBDIR], [directory used under html-dir],
['$(PACKAGE)-$(VERSION)/html'])
if test "x$with_html_subdir" != "x" ; then
HTML_DIR="$with_html_dir/$with_html_subdir"
else
HTML_DIR="$with_html_dir"
fi
AC_SUBST([HTML_DIR])
dnl if --prefix is /usr, don't use /usr/var for localstatedir
dnl or /usr/etc for sysconfdir
dnl as this makes a lot of things break in testing situations
@@ -456,6 +437,8 @@ dnl
LIBVIRT_DRIVER_ARG_QEMU
LIBVIRT_DRIVER_ARG_OPENVZ
LIBVIRT_DRIVER_ARG_VMWARE
LIBVIRT_DRIVER_ARG_PHYP
LIBVIRT_DRIVER_ARG_XENAPI
LIBVIRT_DRIVER_ARG_LIBXL
LIBVIRT_DRIVER_ARG_VBOX
LIBVIRT_DRIVER_ARG_LXC
@@ -472,6 +455,8 @@ LIBVIRT_DRIVER_ARG_INTERFACE
LIBVIRT_DRIVER_CHECK_QEMU
LIBVIRT_DRIVER_CHECK_OPENVZ
LIBVIRT_DRIVER_CHECK_VMWARE
LIBVIRT_DRIVER_CHECK_PHYP
LIBVIRT_DRIVER_CHECK_XENAPI
LIBVIRT_DRIVER_CHECK_LIBXL
LIBVIRT_DRIVER_CHECK_VBOX
LIBVIRT_DRIVER_CHECK_LXC
@@ -485,6 +470,8 @@ LIBVIRT_DRIVER_CHECK_LIBVIRTD
LIBVIRT_DRIVER_CHECK_NETWORK
LIBVIRT_DRIVER_CHECK_INTERFACE
AM_CONDITIONAL([WITH_XENCONFIG], [test "$with_libxl" = "yes"])
dnl
dnl in case someone want to build static binaries
@@ -532,6 +519,9 @@ dnl
AC_CHECK_HEADERS([linux/kvm.h])
AM_CONDITIONAL([WITH_SETUID_RPC_CLIENT], [test "$with_lxc$with_login_shell" != "nono"])
dnl
dnl check for kernel headers required by src/bridge.c
dnl
@@ -629,9 +619,9 @@ if test "$with_libvirtd" = "no"; then
with_storage_vstorage=no
fi
dnl storage-fs does not work on macOS
dnl storage-fs does not work on MacOS X
if test "$with_macos" = "yes"; then
if test "$with_osx" = "yes"; then
with_storage_fs=no
fi
@@ -699,23 +689,10 @@ if test "$with_linux" = "yes"; then
fi
dnl Allow perl/python overrides
AC_PATH_PROGS([PYTHON], [python3])
AC_PATH_PROGS([PYTHON], [python3 python2 python])
if test -z "$PYTHON"; then
AC_MSG_ERROR(['python3' binary is required to build libvirt])
AC_MSG_ERROR(['python3', 'python2' or 'python' binary is required to build libvirt])
fi
AC_DEFINE_UNQUOTED([PYTHON], "$PYTHON", [path to python binary])
AC_PATH_PROG([FLAKE8], [flake8])
if test -z "$FLAKE8"; then
AC_MSG_WARN(['flake8' binary is required to check python code style])
fi
dnl Python3 < 3.7 treats the C locale as 7-bit only.
dnl We must force env vars so it treats it as UTF-8
dnl regardless of the user's locale.
RUNUTF8="LC_ALL= LANG=C LC_CTYPE=en_US.UTF-8"
AC_SUBST(RUNUTF8)
AC_PATH_PROG([PERL], [perl])
if test -z "$PERL"; then
AC_MSG_ERROR(['perl' binary is required to build libvirt])
@@ -776,6 +753,34 @@ if test "$enable_test_coverage" = yes; then
WARN_CFLAGS=$save_WARN_CFLAGS
fi
LIBVIRT_ARG_ENABLE([TEST_OOM], [memory allocation failure checking], [no])
case "$enable_test_oom" in
yes|no) ;;
*) AC_MSG_ERROR([bad value ${enable_test_oom} for test-oom option]) ;;
esac
if test "$enable_test_oom" = yes; then
have_trace=yes
AC_CHECK_HEADER([execinfo.h],[],[have_trace=no])
AC_CHECK_FUNC([backtrace],[],[have_trace=no])
if test "$have_trace" = "yes"; then
AC_DEFINE([TEST_OOM_TRACE], 1, [Whether backtrace() is available])
fi
AC_DEFINE([TEST_OOM], 1, [Whether malloc OOM checking is enabled])
fi
LIBVIRT_ARG_ENABLE([TEST_LOCKING], [thread locking tests using CIL], [no])
case "$enable_test_locking" in
yes|no) ;;
*) AC_MSG_ERROR([bad value ${enable_test_locking} for test-locking option]) ;;
esac
if test "$enable_test_locking" = "yes"; then
LOCK_CHECKING_CFLAGS="-save-temps"
AC_SUBST([LOCK_CHECKING_CFLAGS])
fi
AM_CONDITIONAL([WITH_CIL],[test "$enable_test_locking" = "yes"])
dnl Cygwin, MinGW and MSVC checks
LIBVIRT_WIN_CHECK_COMMON
LIBVIRT_WIN_CHECK_CYGWIN
@@ -880,12 +885,6 @@ AC_CHECK_DECLS([clock_serv_t, host_get_clock_service, clock_get_time],
#include <mach/mach.h>
])
# Check if we have new enough kernel to support BPF devices for cgroups v2
if test "$with_linux" = "yes"; then
AC_CHECK_DECLS([BPF_PROG_QUERY, BPF_CGROUP_DEVICE],
[], [], [#include <linux/bpf.h>])
fi
# Check if we need to look for ifconfig
if test "$want_ifconfig" = "yes"; then
AC_PATH_PROG([IFCONFIG_PATH], [ifconfig])
@@ -910,11 +909,10 @@ test "x$lv_cv_static_analysis" = xyes && t=1
AC_DEFINE_UNQUOTED([STATIC_ANALYSIS], [$t],
[Define to 1 when performing static analysis.])
GNUmakefile=GNUmakefile
m4_if(m4_version_compare([2.61a.100],
m4_defn([m4_PACKAGE_VERSION])), [1], [],
[AC_CONFIG_LINKS([$GNUmakefile:$GNUmakefile], [],
[GNUmakefile=$GNUmakefile])])
# Some GNULIB base64 symbols clash with a kerberos library
AC_DEFINE_UNQUOTED([isbase64],[libvirt_gl_isbase64],[Hack to avoid symbol clash])
AC_DEFINE_UNQUOTED([base64_encode],[libvirt_gl_base64_encode],[Hack to avoid symbol clash])
AC_DEFINE_UNQUOTED([base64_encode_alloc],[libvirt_gl_base64_encode_alloc],[Hack to avoid symbol clash])
AC_CONFIG_FILES([run],
[chmod +x,-w run])
@@ -949,8 +947,10 @@ LIBVIRT_DRIVER_RESULT_QEMU
LIBVIRT_DRIVER_RESULT_OPENVZ
LIBVIRT_DRIVER_RESULT_VMWARE
LIBVIRT_DRIVER_RESULT_VBOX
LIBVIRT_DRIVER_RESULT_XENAPI
LIBVIRT_DRIVER_RESULT_LIBXL
LIBVIRT_DRIVER_RESULT_LXC
LIBVIRT_DRIVER_RESULT_PHYP
LIBVIRT_DRIVER_RESULT_ESX
LIBVIRT_DRIVER_RESULT_HYPERV
LIBVIRT_DRIVER_RESULT_VZ
@@ -992,6 +992,7 @@ LIBVIRT_RESULT_ACL
LIBVIRT_RESULT_APPARMOR
LIBVIRT_RESULT_ATTR
LIBVIRT_RESULT_AUDIT
LIBVIRT_RESULT_AVAHI
LIBVIRT_RESULT_BASH_COMPLETION
LIBVIRT_RESULT_BLKID
LIBVIRT_RESULT_CAPNG
@@ -999,9 +1000,7 @@ LIBVIRT_RESULT_CURL
LIBVIRT_RESULT_DBUS
LIBVIRT_RESULT_DLOPEN
LIBVIRT_RESULT_FIREWALLD
LIBVIRT_RESULT_FIREWALLD_ZONE
LIBVIRT_RESULT_FUSE
LIBVIRT_RESULT_GLIB
LIBVIRT_RESULT_GLUSTER
LIBVIRT_RESULT_GNUTLS
LIBVIRT_RESULT_HAL
@@ -1029,6 +1028,7 @@ LIBVIRT_RESULT_SSH2
LIBVIRT_RESULT_UDEV
LIBVIRT_RESULT_VIRTUALPORT
LIBVIRT_RESULT_XDR
LIBVIRT_RESULT_XENAPI
LIBVIRT_RESULT_YAJL
AC_MSG_NOTICE([])
AC_MSG_NOTICE([Windows])
@@ -1038,13 +1038,14 @@ LIBVIRT_WIN_RESULT_WINDRES
AC_MSG_NOTICE([])
AC_MSG_NOTICE([Test suite])
AC_MSG_NOTICE([])
LIBVIRT_RESULT([Coverage], [$enable_test_coverage])
AC_MSG_NOTICE([ Coverage: $enable_test_coverage])
AC_MSG_NOTICE([ Alloc OOM: $enable_test_oom])
AC_MSG_NOTICE([])
AC_MSG_NOTICE([Miscellaneous])
AC_MSG_NOTICE([])
LIBVIRT_RESULT_DEBUG
LIBVIRT_RESULT([Use -Werror], [$enable_werror])
LIBVIRT_RESULT([Warning Flags], [$WARN_CFLAGS])
AC_MSG_NOTICE([ Use -Werror: $enable_werror])
AC_MSG_NOTICE([ Warning Flags: $WARN_CFLAGS])
LIBVIRT_RESULT_DTRACE
LIBVIRT_RESULT_NUMAD
LIBVIRT_RESULT_INIT_SCRIPT

View File

@@ -16,84 +16,26 @@
## License along with this library. If not, see
## <http://www.gnu.org/licenses/>.
HTML_DIR = $(docdir)/html
modules = \
libvirt-common \
libvirt-domain \
libvirt-domain-checkpoint \
libvirt-domain-snapshot \
libvirt-event \
libvirt-host \
libvirt-interface \
libvirt-network \
libvirt-nodedev \
libvirt-nwfilter \
libvirt-secret \
libvirt-storage \
libvirt-stream \
virterror \
$(NULL)
modules_admin = libvirt-admin
modules_qemu = libvirt-qemu
modules_lxc = libvirt-lxc
all: vpathhack
# This hack enables us to view the web pages
# from within the uninstalled build tree
vpathhack:
@for dir in fonts js logos; \
do \
test -e $$dir || ln -s $(srcdir)/$$dir $$dir ; \
done
@for file in $(css); \
do \
test -e $$file || ln -s $(srcdir)/$$file $$file ; \
done
clean-local:
for dir in fonts js logos; \
do \
rm -f $$dir ; \
done
for file in $(css); \
do \
rm -f $$file ; \
done
DEVHELP_DIR=$(datadir)/gtk-doc/html/libvirt
apihtml = \
html/index.html \
$(apihtml_generated)
apihtml_generated = \
$(addprefix html/libvirt-,$(addsuffix .html,$(modules))) \
$(NULL)
apiadminhtml = \
html/index-admin.html \
$(apiadminhtml_generated)
apiadminhtml_generated = \
$(addprefix html/libvirt-,$(addsuffix .html,$(modules_admin))) \
$(NULL)
apiqemuhtml = \
html/index-qemu.html \
$(apiqemuhtml_generated)
apiqemuhtml_generated = \
$(addprefix html/libvirt-,$(addsuffix .html,$(modules_qemu))) \
$(NULL)
apilxchtml = \
html/index-lxc.html \
$(apilxchtml_generated)
apilxchtml_generated = \
$(addprefix html/libvirt-,$(addsuffix .html,$(modules_lxc))) \
$(NULL)
html/libvirt-libvirt-common.html \
html/libvirt-libvirt-domain.html \
html/libvirt-libvirt-domain-snapshot.html \
html/libvirt-libvirt-event.html \
html/libvirt-libvirt-host.html \
html/libvirt-libvirt-interface.html \
html/libvirt-libvirt-network.html \
html/libvirt-libvirt-nodedev.html \
html/libvirt-libvirt-nwfilter.html \
html/libvirt-libvirt-secret.html \
html/libvirt-libvirt-storage.html \
html/libvirt-libvirt-stream.html \
html/libvirt-virterror.html
apipng = \
html/left.png \
@@ -101,8 +43,11 @@ apipng = \
html/home.png \
html/right.png
apirefdir = $(HTML_DIR)/html
apiref_DATA = $(apihtml) $(apiadminhtml) $(apiqemuhtml) $(apilxchtml) $(apipng)
devhelphtml = \
devhelp/libvirt.devhelp \
devhelp/index.html \
devhelp/general.html \
devhelp/libvirt-virterror.html
css = \
generic.css \
@@ -110,13 +55,6 @@ css = \
mobile.css \
main.css
javascript = \
js/main.js \
$(NULL)
javascriptdir = $(HTML_DIR)/js
javascript_DATA = $(javascript)
fonts = \
fonts/LICENSE.md \
fonts/stylesheet.css \
@@ -131,8 +69,15 @@ fonts = \
fonts/overpass-mono-semibold.woff \
fonts/overpass-regular.woff
fontsdir = $(HTML_DIR)/fonts
fonts_DATA = $(fonts)
devhelppng = \
devhelp/home.png \
devhelp/left.png \
devhelp/right.png \
devhelp/up.png
devhelpcss = devhelp/style.css
devhelpxsl = devhelp/devhelp.xsl devhelp/html.xsl
logofiles = \
logos/logo-base.svg \
@@ -153,9 +98,6 @@ logofiles = \
logos/logo-banner-light-256.png \
logos/logo-banner-light-800.png
logofilesdir = $(HTML_DIR)/logos
logofiles_DATA = $(logofiles)
png = \
32favicon.png \
libvirt-daemon-arch.png \
@@ -171,157 +113,40 @@ gif = \
architecture.gif \
node.gif
internals_html_in = \
$(patsubst $(srcdir)/%,%,$(wildcard $(srcdir)/internals/*.html.in))
internals_rst = \
$(patsubst $(srcdir)/%,%,$(wildcard $(srcdir)/internals/*.rst))
internals_rst_html_in = \
$(internals_rst:%.rst=%.html.in)
internals_html = \
$(internals_html_in:%.html.in=%.html) \
$(internals_rst_html_in:%.html.in=%.html)
internalsdir = $(HTML_DIR)/internals
internals_DATA = $(internals_html)
kbase_html_in = \
$(patsubst $(srcdir)/%,%,$(wildcard $(srcdir)/kbase/*.html.in))
kbase_rst = \
$(patsubst $(srcdir)/%,%,$(wildcard $(srcdir)/kbase/*.rst))
kbase_rst_html_in = \
$(kbase_rst:%.rst=%.html.in)
kbase_html = \
$(kbase_html_in:%.html.in=%.html) \
$(kbase_rst_html_in:%.html.in=%.html)
kbasedir = $(HTML_DIR)/kbase
kbase_DATA = $(kbase_html)
# Sync with src/util/
KEYCODES = linux osx atset1 atset2 atset3 xtkbd usb win32 qnum
KEYNAMES = linux osx win32
manpages_rst = \
manpages/index.rst \
$(NULL)
manpages1_rst = \
manpages/virt-pki-validate.rst \
manpages/virt-xml-validate.rst \
manpages/virt-admin.rst \
manpages/virsh.rst \
$(NULL)
manpages7_rst = \
$(KEYCODES:%=manpages/virkeycode-%.rst) \
$(KEYNAMES:%=manpages/virkeyname-%.rst) \
$(NULL)
manpages8_rst = $(NULL)
manpages_rst += \
$(manpages1_rst) \
$(manpages7_rst) \
$(manpages8_rst) \
$(NULL)
if WITH_LIBVIRTD
manpages8_rst += \
manpages/libvirtd.rst \
manpages/virtlockd.rst \
manpages/virtlogd.rst \
$(NULL)
else ! WITH_LIBVIRTD
manpages_rst += \
manpages/libvirtd.rst \
manpages/virtlockd.rst \
manpages/virtlogd.rst \
$(NULL)
endif ! WITH_LIBVIRTD
if WITH_HOST_VALIDATE
manpages1_rst += manpages/virt-host-validate.rst
else ! WITH_HOST_VALIDATE
manpages_rst += manpages/virt-host-validate.rst
endif ! WITH_HOST_VALIDATE
if WITH_LOGIN_SHELL
manpages1_rst += manpages/virt-login-shell.rst
else ! WITH_LOGIN_SHELL
manpages_rst += manpages/virt-login-shell.rst
endif ! WITH_LOGIN_SHELL
if WITH_SANLOCK
manpages8_rst += manpages/virt-sanlock-cleanup.rst
else ! WITH_SANLOCK
manpages_rst += manpages/virt-sanlock-cleanup.rst
endif ! WITH_SANLOCK
manpages_rst_html_in = \
$(manpages_rst:%.rst=%.html.in)
manpages_html = \
$(manpages_rst_html_in:%.html.in=%.html)
man1_MANS = $(manpages1_rst:%.rst=%.1)
man7_MANS = $(manpages7_rst:%.rst=%.7)
man8_MANS = $(manpages8_rst:%.rst=%.8)
%.1: %.rst
$(AM_V_GEN)$(MKDIR_P) `dirname $@` && \
grep -v '^\.\. contents::' < $< | \
sed -e 's|SYSCONFDIR|$(sysconfdir)|g' \
-e 's|RUNSTATEDIR|$(runstatedir)|g' | \
$(RST2MAN) > $@ || { rm $@ && exit 1; }
%.7: %.rst
$(AM_V_GEN)$(MKDIR_P) `dirname $@` && \
grep -v '^\.\. contents::' < $< | \
sed -e 's|SYSCONFDIR|$(sysconfdir)|g' \
-e 's|RUNSTATEDIR|$(runstatedir)|g' | \
$(RST2MAN) > $@ || { rm $@ && exit 1; }
%.8: %.rst
$(AM_V_GEN)$(MKDIR_P) `dirname $@` && \
grep -v '^\.\. contents::' < $< | \
sed -e 's|SYSCONFDIR|$(sysconfdir)|g' \
-e 's|RUNSTATEDIR|$(runstatedir)|g' | \
$(RST2MAN) > $@ || { rm $@ && exit 1; }
manpages/virkeycode-%.rst: $(top_srcdir)/src/keycodemapdb/data/keymaps.csv \
$(top_srcdir)/src/keycodemapdb/tools/keymap-gen Makefile.am
$(AM_V_GEN)export NAME=`echo $@ | \
sed -e 's,manpages/virkeycode-,,' -e 's,\.rst,,'` && \
$(MKDIR_P) manpages/ && \
$(RUNUTF8) $(PYTHON) $(top_srcdir)/src/keycodemapdb/tools/keymap-gen \
code-docs \
--lang rst \
--title "virkeycode-$$NAME" \
--subtitle "Key code values for $$NAME" \
$(top_srcdir)/src/keycodemapdb/data/keymaps.csv $$NAME > $@
manpages/virkeyname-%.rst: $(top_srcdir)/src/keycodemapdb/data/keymaps.csv \
$(top_srcdir)/src/keycodemapdb/tools/keymap-gen Makefile.am
$(AM_V_GEN)export NAME=`echo $@ | \
sed -e 's,manpages/virkeyname-,,' -e 's,\.rst,,'` && \
$(MKDIR_P) manpages/ && \
$(RUNUTF8) $(PYTHON) $(top_srcdir)/src/keycodemapdb/tools/keymap-gen \
name-docs \
--lang rst \
--title "virkeyname-$$NAME" \
--subtitle "Key name values for $$NAME" \
$(top_srcdir)/src/keycodemapdb/data/keymaps.csv $$NAME > $@
manpagesdir = $(HTML_DIR)/manpages
manpages_DATA = $(manpages_html)
internals_html = $(internals_html_in:%.html.in=%.html)
# Since we ship pre-built html in the tarball, we must also
# ship the sources, even when those sources are themselves
# generated.
# Generate hvsupport.html and news.html first, since they take one extra step.
dot_html_generated_in = \
hvsupport.html.in \
news.html.in
dot_html_in = \
hvsupport.html.in \
news.html.in \
$(notdir $(wildcard $(srcdir)/*.html.in))
dot_rst = \
$(notdir $(wildcard $(srcdir)/*.rst))
dot_rst_html_in = \
$(dot_rst:%.rst=%.html)
dot_html = \
$(dot_html_generated_in:%.html.in=%.html) \
$(dot_html_in:%.html.in=%.html) \
$(dot_rst_html_in:%.html.in=%.html)
dot_html = $(dot_html_in:%.html.in=%.html)
htmldir = $(HTML_DIR)
html_DATA = $(css) $(png) $(gif) $(dot_html)
dot_php_in = $(notdir $(wildcard $(srcdir)/*.php.in))
dot_php_code_in = $(dot_php_in:%.php.in=%.php.code.in)
dot_php = $(dot_php_in:%.php.in=%.php)
xml = \
libvirt-api.xml \
libvirt-refs.xml
qemu_xml = \
libvirt-qemu-api.xml \
libvirt-qemu-refs.xml
lxc_xml = \
libvirt-lxc-api.xml \
libvirt-lxc-refs.xml
admin_xml = \
libvirt-admin-api.xml \
libvirt-admin-refs.xml
apidir = $(pkgdatadir)/api
api_DATA = \
@@ -344,39 +169,31 @@ schemadir = $(pkgdatadir)/schemas
schema_DATA = $(wildcard $(srcdir)/schemas/*.rng)
EXTRA_DIST= \
apibuild.py genaclperms.pl \
site.xsl subsite.xsl newapi.xsl page.xsl \
wrapstring.xsl \
$(dot_html_in) $(dot_rst) $(gif) $(apipng) \
$(fig) $(png) $(css) \
$(javascript) $(logofiles) \
$(internals_html_in) $(internals_rst) $(fonts) \
$(kbase_html_in) $(kbase_rst) \
$(manpages_rst) \
$(dot_html) $(dot_html_in) $(gif) $(apihtml) $(apipng) \
$(devhelphtml) $(devhelppng) $(devhelpcss) $(devhelpxsl) \
$(xml) $(qemu_xml) $(lxc_xml) $(admin_xml) $(fig) $(png) $(css) \
$(logofiles) $(dot_php_in) $(dot_php_code_in) $(dot_php)\
$(internals_html_in) $(internals_html) $(fonts) \
aclperms.htmlinc \
hvsupport.pl \
$(schema_DATA)
acl_generated = aclperms.htmlinc
aclperms.htmlinc: $(top_srcdir)/src/access/viraccessperm.h \
$(top_srcdir)/scripts/genaclperms.py Makefile.am
$(AM_V_GEN)$(RUNUTF8) $(PYTHON) $(top_srcdir)/scripts/genaclperms.py $< > $@
$(srcdir)/aclperms.htmlinc: $(top_srcdir)/src/access/viraccessperm.h \
$(srcdir)/genaclperms.pl Makefile.am
$(AM_V_GEN)$(PERL) $(srcdir)/genaclperms.pl $< > $@
CLEANFILES = \
$(dot_html) \
$(apihtml) \
$(apiadminhtml) \
$(apiqemuhtml) \
$(apilxchtml) \
$(internals_html) \
$(kbase_html) \
$(manpages_html) \
$(man1_MANS) \
$(man7_MANS) \
$(manpages7_rst) \
$(man8_MANS) \
$(api_DATA) \
$(dot_html_generated_in) \
aclperms.htmlinc
MAINTAINERCLEANFILES = \
$(addprefix $(srcdir)/,$(dot_html)) \
$(addprefix $(srcdir)/,$(apihtml)) \
$(addprefix $(srcdir)/,$(devhelphtml)) \
$(addprefix $(srcdir)/,$(internals_html)) \
$(addprefix $(srcdir)/,$(dot_php)) \
$(srcdir)/hvsupport.html.in $(srcdir)/aclperms.htmlinc
timestamp="$(shell if test -n "$$SOURCE_DATE_EPOCH"; \
then \
@@ -385,42 +202,49 @@ timestamp="$(shell if test -n "$$SOURCE_DATE_EPOCH"; \
date -u; \
fi)"
hvsupport.html: hvsupport.html.in
all-am: web
hvsupport.html.in: $(top_srcdir)/scripts/hvsupport.py $(api_DATA) \
api: $(srcdir)/libvirt-api.xml $(srcdir)/libvirt-refs.xml
qemu_api: $(srcdir)/libvirt-qemu-api.xml $(srcdir)/libvirt-qemu-refs.xml
lxc_api: $(srcdir)/libvirt-lxc-api.xml $(srcdir)/libvirt-lxc-refs.xml
admin_api: $(srcdir)/libvirt-admin-api.xml $(srcdir)/libvirt-admin-refs.xml
web: $(dot_html) $(internals_html) html/index.html devhelp/index.html \
$(dot_php)
hvsupport.html: $(srcdir)/hvsupport.html.in
$(srcdir)/hvsupport.html.in: $(srcdir)/hvsupport.pl $(api_DATA) \
$(top_srcdir)/src/libvirt_public.syms \
$(top_srcdir)/src/libvirt_qemu.syms $(top_srcdir)/src/libvirt_lxc.syms \
$(top_srcdir)/src/driver.h
$(AM_V_GEN)$(RUNUTF8) $(PYTHON) $(top_srcdir)/scripts/hvsupport.py \
$(top_srcdir) $(top_builddir) > $@ || { rm $@ && exit 1; }
$(AM_V_GEN)$(PERL) $(srcdir)/hvsupport.pl $(top_srcdir)/src > $@ \
|| { rm $@ && exit 1; }
# xsltproc seems to add the xmlns="" attribute to random output elements:
# use sed to strip it out, as leaving it there triggers XML errors during
# further transformation steps
news.html.in: \
$(srcdir)/news.xml \
$(srcdir)/news-html.xsl
$(AM_V_GEN)$(XSLTPROC) --nonet \
$(srcdir)/news-html.xsl \
$(srcdir)/news.xml \
>$@ \
|| { rm -f $@; exit 1; };
>$@-tmp \
|| { rm -f $@-tmp; exit 1; }; \
sed 's/ xmlns=""//g' $@-tmp >$@ \
|| { rm -f $@-tmp; exit 1; }; \
rm -f $@-tmp
EXTRA_DIST += \
$(srcdir)/news.xml \
$(srcdir)/news.rng \
$(srcdir)/news-html.xsl
MAINTAINERCLEANFILES += \
$(srcdir)/news.html.in
%.png: %.fig
convert -rotate 90 $< $@
manpages/%.html.in: manpages/%.rst
$(AM_V_GEN)$(MKDIR_P) `dirname $@` && \
grep -v '^:Manual ' < $< | \
sed -e 's|SYSCONFDIR|$(sysconfdir)|g' \
-e 's|RUNSTATEDIR|$(runstatedir)|g' | \
$(RST2HTML) > $@ || { rm $@ && exit 1; }
%.html.in: %.rst
$(AM_V_GEN)$(MKDIR_P) `dirname $@` && \
$(RST2HTML) $< > $@ || { rm $@ && exit 1; }
%.html.tmp: %.html.in site.xsl subsite.xsl page.xsl \
$(acl_generated)
$(AM_V_GEN)name=`echo $@ | sed -e 's/.tmp//'`; \
@@ -433,56 +257,65 @@ manpages/%.html.in: manpages/%.rst
style=subsite.xsl; \
fi; \
$(XSLTPROC) --stringparam pagename $$name \
--stringparam builddir '$(abs_top_builddir)' \
--stringparam timestamp $(timestamp) --nonet \
$(top_srcdir)/docs/$$style $< > $@ \
|| { rm $@ && exit 1; }
%.html: %.html.tmp
$(AM_V_GEN)$(XMLLINT) --nonet --format $< > $@ \
|| { rm $@ && exit 1; }
$(AM_V_GEN)$(XMLLINT) --nonet --format $< > $(srcdir)/$@ \
|| { rm $(srcdir)/$@ && exit 1; }
%.php.tmp: %.php.in site.xsl page.xsl
$(AM_V_GEN)$(XSLTPROC) --stringparam pagename $(@:.tmp=) \
--stringparam timestamp $(timestamp) --nonet \
$(top_srcdir)/docs/site.xsl $< > $@ \
|| { rm $@ && exit 1; }
%.php: %.php.tmp %.php.code.in
$(AM_V_GEN)sed \
-e '/<span id="php_placeholder"><\/span>/r '"$(srcdir)/$@.code.in" \
-e /php_placeholder/d < $@.tmp > $(srcdir)/$@ \
|| { rm $(srcdir)/$@ && exit 1; }
$(apihtml_generated): html/index.html
$(apiadminhtml_generated): html/index-admin.html
$(apiqemuhtml_generated): html/index-qemu.html
$(apilxchtml_generated): html/index-lxc.html
html/index.html: libvirt-api.xml newapi.xsl page.xsl $(APIBUILD_STAMP)
$(AM_V_GEN)$(XSLTPROC) --nonet -o ./ \
$(AM_V_GEN)$(XSLTPROC) --nonet -o $(srcdir)/ \
--stringparam builddir '$(abs_top_builddir)' \
--stringparam timestamp $(timestamp) \
$(srcdir)/newapi.xsl libvirt-api.xml
$(srcdir)/newapi.xsl $(srcdir)/libvirt-api.xml && \
$(XMLLINT) --nonet --noout $(srcdir)/html/*.html
html/index-%.html: libvirt-%-api.xml newapi.xsl page.xsl $(APIBUILD_STAMP)
$(AM_V_GEN)$(XSLTPROC) --nonet -o ./ \
--stringparam builddir '$(abs_top_builddir)' \
--stringparam timestamp $(timestamp) \
--stringparam indexfile $(@:html/%=%) \
$(srcdir)/newapi.xsl $<
$(addprefix $(srcdir)/,$(devhelphtml)): $(srcdir)/libvirt-api.xml $(devhelpxsl)
$(AM_V_GEN)$(XSLTPROC) --stringparam timestamp $(timestamp) \
--nonet -o $(srcdir)/devhelp/ \
$(top_srcdir)/docs/devhelp/devhelp.xsl $(srcdir)/libvirt-api.xml
check-html:
$(XMLLINT) --nonet --noout html/*.html
check-local: check-html
python_generated_files = \
html/libvirt-libvirt-lxc.html \
html/libvirt-libvirt-qemu.html \
html/libvirt-libvirt-admin.html \
html/libvirt-virterror.html \
$(api_DATA) \
$(srcdir)/html/libvirt-libvirt-lxc.html \
$(srcdir)/html/libvirt-libvirt-qemu.html \
$(srcdir)/html/libvirt-libvirt-admin.html \
$(srcdir)/html/libvirt-virterror.html \
$(srcdir)/libvirt-api.xml \
$(srcdir)/libvirt-refs.xml \
$(srcdir)/libvirt-lxc-api.xml \
$(srcdir)/libvirt-lxc-refs.xml \
$(srcdir)/libvirt-qemu-api.xml \
$(srcdir)/libvirt-qemu-refs.xml \
$(srcdir)/libvirt-admin-api.xml \
$(srcdir)/libvirt-admin-refs.xml \
$(NULL)
APIBUILD=$(top_srcdir)/scripts/apibuild.py
APIBUILD_STAMP=apibuild.py.stamp
CLEANFILES += $(APIBUILD_STAMP)
APIBUILD=$(srcdir)/apibuild.py
APIBUILD_STAMP=$(APIBUILD).stamp
EXTRA_DIST += $(APIBUILD_STAMP)
$(python_generated_files): $(APIBUILD_STAMP)
$(APIBUILD_STAMP): $(top_srcdir)/scripts/apibuild.py \
$(APIBUILD_STAMP): $(srcdir)/apibuild.py \
$(top_srcdir)/include/libvirt/libvirt.h \
$(top_srcdir)/include/libvirt/libvirt-common.h.in \
$(top_srcdir)/include/libvirt/libvirt-domain-checkpoint.h \
$(top_srcdir)/include/libvirt/libvirt-domain-snapshot.h \
$(top_srcdir)/include/libvirt/libvirt-domain.h \
$(top_srcdir)/include/libvirt/libvirt-event.h \
@@ -499,7 +332,6 @@ $(APIBUILD_STAMP): $(top_srcdir)/scripts/apibuild.py \
$(top_srcdir)/include/libvirt/libvirt-admin.h \
$(top_srcdir)/include/libvirt/virterror.h \
$(top_srcdir)/src/libvirt.c \
$(top_srcdir)/src/libvirt-domain-checkpoint.c \
$(top_srcdir)/src/libvirt-domain-snapshot.c \
$(top_srcdir)/src/libvirt-domain.c \
$(top_srcdir)/src/libvirt-host.c \
@@ -512,10 +344,65 @@ $(APIBUILD_STAMP): $(top_srcdir)/scripts/apibuild.py \
$(top_srcdir)/src/libvirt-stream.c \
$(top_srcdir)/src/libvirt-lxc.c \
$(top_srcdir)/src/libvirt-qemu.c \
$(top_srcdir)/src/admin/libvirt-admin.c \
$(top_srcdir)/src/libvirt-admin.c \
$(top_srcdir)/src/util/virerror.c \
$(top_srcdir)/src/util/virevent.c \
$(top_srcdir)/src/util/virtypedparam-public.c
$(AM_V_GEN)srcdir=$(srcdir) builddir=$(builddir) \
$(RUNUTF8) $(PYTHON) $(APIBUILD)
$(top_srcdir)/src/util/virtypedparam.c
$(AM_V_GEN)srcdir=$(srcdir) builddir=$(builddir) $(PYTHON) $(APIBUILD)
touch $@
check-local: all
dist-local: all
clean-local:
rm -f *~ *.bak *.hierarchy *.signals *-unused.txt *.html html/*.html
maintainer-clean-local: clean-local
rm -rf $(srcdir)/libvirt-api.xml $(srcdir)/libvirt-refs.xml
rm -rf $(srcdir)/libvirt-qemu-api.xml $(srcdir)/libvirt-qemu-refs.xml
rm -rf $(srcdir)/libvirt-lxc-api.xml $(srcdir)/libvirt-lxc-refs.xml
rm -rf $(srcdir)/libvirt-admin-api.xml $(srcdir)/libvirt-admin-refs.xml
rm -rf $(APIBUILD_STAMP)
rebuild: api qemu_api lxc_api admin_api all
install-data-local:
$(mkinstalldirs) $(DESTDIR)$(HTML_DIR)
for f in $(css) $(dot_html) $(gif) $(png); do \
$(INSTALL) -m 0644 $(srcdir)/$$f $(DESTDIR)$(HTML_DIR); done
$(mkinstalldirs) $(DESTDIR)$(HTML_DIR)/logos
for f in $(logofiles); do \
$(INSTALL) -m 0644 $(srcdir)/$$f $(DESTDIR)$(HTML_DIR)/logos; done
$(mkinstalldirs) $(DESTDIR)$(HTML_DIR)/html
for h in $(apihtml); do \
$(INSTALL) -m 0644 $(srcdir)/$$h $(DESTDIR)$(HTML_DIR)/html; done
for p in $(apipng); do \
$(INSTALL) -m 0644 $(srcdir)/$$p $(DESTDIR)$(HTML_DIR)/html; done
$(mkinstalldirs) $(DESTDIR)$(HTML_DIR)/internals
for f in $(internals_html); do \
$(INSTALL) -m 0644 $(srcdir)/$$f $(DESTDIR)$(HTML_DIR)/internals; done
$(mkinstalldirs) $(DESTDIR)$(DEVHELP_DIR)
for file in $(devhelphtml) $(devhelppng) $(devhelpcss); do \
$(INSTALL) -m 0644 $(srcdir)/$${file} $(DESTDIR)$(DEVHELP_DIR) ; \
done
$(mkinstalldirs) $(DESTDIR)$(HTML_DIR)/fonts
for f in $(fonts); do \
$(INSTALL) -m 0644 $(srcdir)/$$f $(DESTDIR)$(HTML_DIR)/fonts; \
done
uninstall-local:
for f in $(css) $(dot_html) $(gif) $(png) $(fonts); do \
rm -f $(DESTDIR)$(HTML_DIR)/$$f; \
done
for f in $(logofiles); do \
rm -f $(DESTDIR)$(HTML_DIR)/$$f; \
done
for h in $(apihtml); do rm -f $(DESTDIR)$(HTML_DIR)/$$h; done
for p in $(apipng); do rm -f $(DESTDIR)$(HTML_DIR)/$$p; done
for f in $(internals_html); do \
rm -f $(DESTDIR)$(HTML_DIR)/$$f; \
done
for f in $(devhelphtml) $(devhelppng) $(devhelpcss); do \
rm -f $(DESTDIR)$(DEVHELP_DIR)/$$(basename $$f); \
done

View File

@@ -64,7 +64,7 @@
</p>
<h3><a id="object_connect">virConnectPtr</a></h3>
<table>
<table class="acl">
<thead>
<tr>
<th>Attribute</th>
@@ -80,7 +80,7 @@
</table>
<h3><a id="object_domain">virDomainPtr</a></h3>
<table>
<table class="acl">
<thead>
<tr>
<th>Attribute</th>
@@ -104,7 +104,7 @@
</table>
<h3><a id="object_interface">virInterfacePtr</a></h3>
<table>
<table class="acl">
<thead>
<tr>
<th>Attribute</th>
@@ -128,7 +128,7 @@
</table>
<h3><a id="object_network">virNetworkPtr</a></h3>
<table>
<table class="acl">
<thead>
<tr>
<th>Attribute</th>
@@ -152,7 +152,7 @@
</table>
<h3><a id="object_node_device">virNodeDevicePtr</a></h3>
<table>
<table class="acl">
<thead>
<tr>
<th>Attribute</th>
@@ -172,7 +172,7 @@
</table>
<h3><a id="object_nwfilter">virNWFilterPtr</a></h3>
<table>
<table class="acl">
<thead>
<tr>
<th>Attribute</th>
@@ -196,7 +196,7 @@
</table>
<h3><a id="object_secret">virSecretPtr</a></h3>
<table>
<table class="acl">
<thead>
<tr>
<th>Attribute</th>
@@ -232,7 +232,7 @@
</table>
<h3><a id="object_storage_pool">virStoragePoolPtr</a></h3>
<table>
<table class="acl">
<thead>
<tr>
<th>Attribute</th>
@@ -256,7 +256,7 @@
</table>
<h3><a id="object_storage_vol">virStorageVolPtr</a></h3>
<table>
<table class="acl">
<thead>
<tr>
<th>Attribute</th>
@@ -317,7 +317,7 @@
</p>
<h3><a id="object_connect_driver">Connection Driver Name</a></h3>
<table>
<table class="acl">
<thead>
<tr>
<th>Connection Driver</th>
@@ -365,6 +365,10 @@
<td>openvz</td>
<td>OPENVZ</td>
</tr>
<tr>
<td>phyp</td>
<td>PHYP</td>
</tr>
<tr>
<td>qemu</td>
<td>QEMU</td>
@@ -389,6 +393,10 @@
<td>vz</td>
<td>vz</td>
</tr>
<tr>
<td>xenapi</td>
<td>XenAPI</td>
</tr>
</tbody>
</table>

View File

@@ -330,7 +330,7 @@
daemon through the <a href="remote.html">remote</a> driver via an
<a href="internals/rpc.html">RPC</a>. Some hypervisors do support
client-side connections and responses, such as Test, OpenVZ, VMware,
VirtualBox (vbox), ESX, Hyper-V, Xen, and Virtuozzo.
Power VM (phyp), VirtualBox (vbox), ESX, Hyper-V, Xen, and Virtuozzo.
The libvirtd daemon service is started on the host at system boot
time and can also be restarted at any time by a properly privileged
user, such as root. The libvirtd daemon uses the same libvirt API

View File

@@ -89,7 +89,7 @@
separately.
</p>
<h2><a id='publicapi'>Defining the public API</a></h2>
<h2><a name='publicapi'>Defining the public API</a></h2>
<p>The first task is to define the public API. If the new API
involves an XML extension, you have to enhance the RelaxNG
@@ -119,7 +119,7 @@
rework it as you go through the process of implementing it.
</p>
<h2><a id='internalapi'>Defining the internal API</a></h2>
<h2><a name='internalapi'>Defining the internal API</a></h2>
<p>
Each public API call is associated with a driver, such as a host
@@ -146,7 +146,7 @@
provide a <code>NULL</code> stub for the new function.
</p>
<h2><a id='implpublic'>Implementing the public API</a></h2>
<h2><a name='implpublic'>Implementing the public API</a></h2>
<p>
Implementing the public API is largely a formality in which we wire up
@@ -179,7 +179,7 @@
<p><code>src/libvirt-$MODULE.c</code></p>
<h2><a id='remoteproto'>Implementing the remote protocol</a></h2>
<h2><a name='remoteproto'>Implementing the remote protocol</a></h2>
<p>
Implementing the remote protocol is essentially a
@@ -187,7 +187,7 @@
understood by referring to the existing code.
</p>
<h3><a id='wireproto'>Defining the wire protocol format</a></h3>
<h3><a name='wireproto'>Defining the wire protocol format</a></h3>
<p>
Defining the wire protocol involves making additions to:
@@ -226,11 +226,11 @@
src/remote/remote_protocol.h
</code></p>
<h3><a id='rpcclient'>Implement the RPC client</a></h3>
<h3><a name='rpcclient'>Implement the RPC client</a></h3>
<p>
Implementing the RPC client uses the rpcgen generated .h files.
The remote method calls go in:
Implementing the uses the rpcgen generated .h files. The remote
method calls go in:
</p>
<p><code>src/remote/remote_driver.c</code></p>
@@ -256,7 +256,7 @@
The server side dispatchers are implemented in:
</p>
<p><code>src/remote/remote_daemon_dispatch.c</code></p>
<p><code>src/remote/daemon_dispatch.c</code></p>
<p>Again, this step uses the .h files generated by make rpcgen.</p>

File diff suppressed because it is too large Load Diff

View File

@@ -30,6 +30,26 @@
<img src="logos/logo-square-powered-256.png" alt="libvirt powered"/>
</p>
<h2><a id="clientserver">Client/Server applications</a></h2>
<dl>
<dt><a href="http://archipelproject.org">Archipel</a></dt>
<dd>
Archipel is a libvirt-based solution to manage and supervise virtual
machines. It uses XMPP for all communication. There is no web
service or custom protocol. You just need at least one XMPP server,
like eJabberd, to start playing with it. This allows Archipel to
work completely real time. You never have to refresh the user
interface, you'll be notified as soon as something happens. You can
even use your favorite chat clients to command your infrastructure.
</dd>
<dd>
Isn't it great to be able to open a chat conversation with your
virtual machine and say things like "How are you today?" or "Hey,
please reboot"?
</dd>
</dl>
<h2><a id="command">Command line tools</a></h2>
<dl>
@@ -99,12 +119,6 @@
machines. It is a command line tool for developers that makes it very
fast and easy to deploy and re-deploy an environment of vm's.
</dd>
<dt><a href="https://github.com/virt-lightning/virt-lightning">virt-lightning</a></dt>
<dd>
Virt-Lightning uses libvirt, cloud-init and libguestfs to allow anyone
to quickly start a new VM. Very much like a container CLI, but with a
virtual machine.
</dd>
</dl>
<h2><a id="configmgmt">Configuration Management</a></h2>
@@ -128,7 +142,7 @@
<h2><a id="continuousintegration">Continuous Integration</a></h2>
<dl>
<dt><a href="http://docs.buildbot.net/latest/manual/configuration/workers-libvirt.html">BuildBot</a></dt>
<dt><a href="https://buildbot.net/buildbot/docs/current/Libvirt.html">BuildBot</a></dt>
<dd>
BuildBot is a system to automate the compile/test cycle required
by most software projects. CVS commits trigger new builds, run on
@@ -359,6 +373,12 @@
metrics. It supports pCPU, vCPU, memory, block device, network interface,
and performance event metrics for each virtual guest.
</dd>
<dt><a href="https://community.zenoss.org/docs/DOC-4687">Zenoss</a></dt>
<dd>
The Zenoss libvirt Zenpack adds support for monitoring virtualization
servers. It has been tested with KVM, QEMU, VMware ESX, and VMware
GSX.
</dd>
</dl>
<h2><a id="provisioning">Provisioning</a></h2>
@@ -463,6 +483,17 @@
</dd>
</dl>
<h2><a id="mobile">Mobile applications</a></h2>
<dl>
<dt><a href="https://market.android.com/details?id=vm.manager">VM Manager</a></dt>
<dd>
VM Manager is VM (libvirt) manager (over SSH) application. VM Manager
is an application for libvirt VM / Domain management over SSH.
Please keep in mind that this software is under heavy development.
</dd>
</dl>
<h2><a id="other">Other</a></h2>
<dl>

View File

@@ -129,9 +129,11 @@ credentials=defgrp</pre>
<li><code>libvirt</code> - used for connections to a libvirtd
server, which is configured with SASL auth</li>
<li><code>ssh</code> - used for connections to a Phyp server
over SSH, but the Phyp driver has been removed</li>
over SSH</li>
<li><code>esx</code> - used for connections to an ESX or
VirtualCenter server</li>
<li><code>xen</code> - used for connections to a Xen Enterprise
sever using XenAPI</li>
</ol>
<p>
@@ -182,29 +184,15 @@ Default policy will still allow any application to connect to the RO socket.
</p>
<p>
The default policy can be overridden by creating a new policy file in the
<code>/etc/polkit-1/rules.d</code> directory. Information on the options
available can be found by reading the <code>polkit(8)</code> man page. The
two libvirt actions are named <code>org.libvirt.unix.manage</code> for full
management access, and <code>org.libvirt.unix.monitor</code> for read-only
access.
</p>
<p>
As an example, creating <code>/etc/polkit-1/rules.d/80-libvirt-manage.rules</code>
with the following gives the user <code>fred</code> full management access
when accessing from an active local session:
</p>
<pre>polkit.addRule(function(action, subject) {
if (action.id == "org.libvirt.unix.manage" &amp;&amp;
subject.local &amp;&amp; subject.active &amp;&amp; subject.user == "fred") {
return polkit.Result.YES;
}
});</pre>
<p>
Older versions of PolicyKit used policy files ending with .pkla in the
local override directory <code>/etc/polkit-1/localauthority/50-local.d/</code>.
Compatibility with this older format is provided by <a
href="https://pagure.io/polkit-pkla-compat">polkit-pkla-compat</a>. As an
example, this gives the user <code>fred</code> full management access:
Policy files should have a unique name ending with .pkla. Using reverse DNS
naming works well. Information on the options available can be found by
reading the pklocalauthority man page. The two libvirt daemon actions
available are named <code>org.libvirt.unix.manage</code> for full management
access, and <code>org.libvirt.unix.monitor</code> for read-only access.
</p>
<p>
As an example, this gives the user <code>fred</code> full management access:
</p>
<pre>[Allow fred libvirt management permissions]
Identity=unix-user:fred
@@ -212,6 +200,10 @@ Action=org.libvirt.unix.manage
ResultAny=yes
ResultInactive=yes
ResultActive=yes</pre>
<p>
Further examples of PolicyKit setup can be found on the
<a href="http://wiki.libvirt.org/page/SSHPolicyKitSetup">wiki page</a>.
</p>
<h2><a id="ACL_server_sasl">SASL pluggable authentication</a></h2>
<p>
@@ -274,7 +266,7 @@ to turn on SASL auth in these listeners.
</p>
<p>
Since the libvirt SASL config file defaults to using GSSAPI (Kerberos), a
config change is required to enable plain password auth. This is done by
config change is rquired to enable plain password auth. This is done by
editting <code>/etc/sasl2/libvirt.conf</code> to set the <code>mech_list</code>
parameter to <code>scram-sha-1</code>.
</p>
@@ -317,7 +309,7 @@ in these scenarios - only the plain TCP listener needs encryption
Some operating systems do not install the SASL kerberos plugin by default. It
may be necessary to install a sub-package such as <code>cyrus-sasl-gssapi</code>.
To check whether the Kerberos plugin is installed run the <code>pluginviewer</code>
program and verify that <code>gssapi</code> is listed, e.g.:
program and verify that <code>gssapi</code> is listed,eg:
</p>
<pre>
# pluginviewer
@@ -359,7 +351,7 @@ kadmin.local: quit
<p>
Any client application wishing to connect to a Kerberos enabled libvirt server
merely needs to run <code>kinit</code> to gain a user principal. This may well
be done automatically when a user logs into a desktop session, if PAM is set up
be done automatically when a user logs into a desktop session, if PAM is setup
to authenticate against Kerberos.
</p>
</body>

View File

@@ -155,17 +155,24 @@ $ROOT
named <code>$VMNAME.libvirt-{qemu,lxc}</code>. Each consumer is associated
with exactly one partition, which also have a corresponding cgroup usually
named <code>$PARTNAME.partition</code>. The exceptions to this naming rule
is the top level default partition for virtual machines and containers
<code>/machine</code>.
are the three top level default partitions, named <code>/system</code> (for
system services), <code>/user</code> (for user login sessions) and
<code>/machine</code> (for virtual machines and containers). By default
every consumer will of course be associated with the <code>/machine</code>
partition.
</p>
<p>
Given this, a possible non-systemd cgroups layout involving 3 qemu guests,
Given this, a possible systemd cgroups layout involving 3 qemu guests,
3 lxc containers and 2 custom child slices, would be:
</p>
<pre>
$ROOT
|
+- system
| |
| +- libvirtd.service
|
+- machine
|

View File

@@ -9,15 +9,13 @@
<h2><a id="compiling">Compiling a release tarball</a></h2>
<p>
libvirt uses the standard configure/make/install steps and mandates
that the build directory is different that the source directory:
libvirt uses the standard configure/make/install steps:
</p>
<pre>
$ xz -c libvirt-x.x.x.tar.xz | tar xvf -
$ cd libvirt-x.x.x
$ mkdir build &amp;&amp; cd build
$ ../configure</pre>
$ ./configure</pre>
<p>
The <i>configure</i> script can be given options to change its default
@@ -30,7 +28,7 @@ $ ../configure</pre>
</p>
<pre>
$ ../configure <i>--help</i></pre>
$ ./configure <i>--help</i></pre>
<p>
When you have determined which options you want to use (if any),
@@ -51,7 +49,7 @@ $ ../configure <i>--help</i></pre>
</p>
<pre>
$ ../configure <i>[possible options]</i>
$ ./configure <i>[possible options]</i>
$ make
$ <b>sudo</b> <i>make install</i></pre>

View File

@@ -6,14 +6,14 @@
<ul id="toc"></ul>
<h2><a id="description">Description</a></h2>
<h2><a name="description">Description</a></h2>
<p>
libvirt-dbus wraps libvirt API to provide a high-level object-oriented
API better suited for dbus-based applications.
</p>
<h2><a id="git">GIT source repository</a></h2>
<h2><a name="git">GIT source repository</a></h2>
<p>
The D-Bus bindings source code is maintained in a
<a href="https://git-scm.com/">git</a> repository available on
@@ -32,7 +32,7 @@ git clone https://libvirt.org/git/libvirt-dbus.git
<a href="https://libvirt.org/git/?p=libvirt-dbus.git">https://libvirt.org/git/?p=libvirt-dbus.git</a>
</pre>
<h2><a id="usage">Usage</a></h2>
<h2><a name="usage">Usage</a></h2>
<p>
libvirt-dbus exports libvirt API using D-Bus objects with methods and

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<xsl:call-template name="dumptext">
<xsl:with-param name="text" select="return/@info"/>
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<head>
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<title><xsl:value-of select="concat(@name, ': ', summary)"/></title>
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<td><a accesskey="h" href="index.html"><img src="home.png" width="24" height="24" border="0" alt="Home"/></a></td>
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<th width="100%" align="center">libvirt Reference Manual</th>
</tr>
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<h2><span class="refentrytitle">libvirt API Modules</span></h2>
<p>
<xsl:for-each select="/api/files/file">
<a href="libvirt-{@name}.html"><xsl:value-of select="@name"/></a> - <xsl:value-of select="summary"/><br/>
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<meta name="generator" content="Libvirt devhelp stylesheet"/>
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<td><a accesskey="h" href="index.html"><img src="home.png" width="24" height="24" border="0" alt="Home"/></a></td>
<td><a accesskey="n" href="general.html"><img src="right.png" width="24" height="24" border="0" alt="Next"/></a></td>
<th width="100%" align="center">libvirt Reference Manual</th>
</tr>
</table>
<h2><span class="refentrytitle">libvirt Reference Manual</span></h2>
<p>Libvir is a C toolkit to interact with the virtualization capabilities of
recent versions of Linux (and other OSes). It is free software available
under the <a href="http://www.opensource.org/licenses/lgpl-license.html">GNU
Lesser General Public License</a>. Virtualization of the Linux Operating
System means the ability to run multiple instances of Operating Systems
concurrently on a single hardware system where the basic resources are driven
by a Linux instance. The library aim at providing long term stable C API
initially for the <a href="http://www.cl.cam.ac.uk/Research/SRG/netos/xen/index.html">Xen
paravirtualization</a> but should be able to integrate other virtualization
mechanisms if needed.</p>
<p> If you get lost searching for some specific API use, try
<a href="https://libvirt.org/search.php">the online search
engine</a> hosted on <a href="https://libvirt.org/">libvirt.org</a>
it indexes the project page, the APIs as well as the mailing-list archives. </p>
</body>
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@@ -9,9 +9,6 @@
<dt><a href="apps.html">Applications</a></dt>
<dd>Applications known to use libvirt</dd>
<dt><a href="manpages/index.html">Manual pages</a></dt>
<dd>Manual pages for libvirt tools / daemons</dd>
<dt><a href="windows.html">Windows</a></dt>
<dd>Downloads for Windows</dd>
@@ -21,9 +18,6 @@
<dt><a href="remote.html">Remote access</a></dt>
<dd>Enable remote access over TCP</dd>
<dt><a href="tlscerts.html">TLS certs</a></dt>
<dd>Generate and deploy x509 certificates for TLS</dd>
<dt><a href="auth.html">Authentication</a></dt>
<dd>Configure authentication for the libvirt daemon</dd>
@@ -54,27 +48,11 @@
<div class="panel">
<h2>Application development</h2>
<dl>
<dt><a href="html/index.html">API reference</a></dt>
<dd>Reference manual for the C public API, split in
<a href="html/libvirt-libvirt-common.html">common</a>,
<a href="html/libvirt-libvirt-domain.html">domain</a>,
<a href="html/libvirt-libvirt-domain-checkpoint.html">domain checkpoint</a>,
<a href="html/libvirt-libvirt-domain-snapshot.html">domain snapshot</a>,
<a href="html/libvirt-virterror.html">error</a>,
<a href="html/libvirt-libvirt-event.html">event</a>,
<a href="html/libvirt-libvirt-host.html">host</a>,
<a href="html/libvirt-libvirt-interface.html">interface</a>,
<a href="html/libvirt-libvirt-network.html">network</a>,
<a href="html/libvirt-libvirt-nodedev.html">node device</a>,
<a href="html/libvirt-libvirt-nwfilter.html">network filter</a>,
<a href="html/libvirt-libvirt-secret.html">secret</a>,
<a href="html/libvirt-libvirt-storage.html">storage</a>,
<a href="html/libvirt-libvirt-stream.html">stream</a>
and
<a href="html/index-admin.html">admin</a>,
<a href="html/index-qemu.html">QEMU</a>,
<a href="html/index-lxc.html">LXC</a> libs
</dd>
<dt><a href="devguide.html">Development Guide</a></dt>
<dd>A guide and reference for developing with libvirt</dd>
<dt><a href="virshcmdref.html">Virsh Commands</a></dt>
<dd>Command reference for virsh</dd>
<dt><a href="bindings.html">Language bindings and API modules</a></dt>
<dd>Bindings of the libvirt API for
@@ -94,25 +72,43 @@
<dd>Description of the XML schemas for
<a href="formatdomain.html">domains</a>,
<a href="formatnetwork.html">networks</a>,
<a href="formatnetworkport.html">network ports</a>,
<a href="formatnwfilter.html">network filtering</a>,
<a href="formatstorage.html">storage</a>,
<a href="formatstorageencryption.html">storage encryption</a>,
<a href="formatcaps.html">capabilities</a>,
<a href="formatdomaincaps.html">domain capabilities</a>,
<a href="formatstoragecaps.html">storage pool capabilities</a>,
<a href="formatnode.html">node devices</a>,
<a href="formatsecret.html">secrets</a>,
<a href="formatsnapshot.html">snapshots</a>,
<a href="formatcheckpoint.html">checkpoints</a>,
<a href="formatbackup.html">backup jobs</a></dd>
<a href="formatsnapshot.html">snapshots</a></dd>
<dt><a href="uri.html">URI format</a></dt>
<dd>The URI formats used for connecting to libvirt</dd>
<dt><a href="locking.html">Disk locking</a></dt>
<dd>Ensuring exclusive guest access to disks with
<a href="locking-lockd.html">virtlockd</a> or
<a href="locking-sanlock.html">Sanlock</a></dd>
<dt><a href="cgroups.html">CGroups</a></dt>
<dd>Control groups integration</dd>
<dt><a href="html/index.html">API reference</a></dt>
<dd>Reference manual for the C public API, split in
<a href="html/libvirt-libvirt-common.html">common</a>,
<a href="html/libvirt-libvirt-domain.html">domain</a>,
<a href="html/libvirt-libvirt-domain-snapshot.html">domain snapshot</a>,
<a href="html/libvirt-virterror.html">error</a>,
<a href="html/libvirt-libvirt-event.html">event</a>,
<a href="html/libvirt-libvirt-host.html">host</a>,
<a href="html/libvirt-libvirt-interface.html">interface</a>,
<a href="html/libvirt-libvirt-network.html">network</a>,
<a href="html/libvirt-libvirt-nodedev.html">node device</a>,
<a href="html/libvirt-libvirt-nwfilter.html">network filter</a>,
<a href="html/libvirt-libvirt-secret.html">secret</a>,
<a href="html/libvirt-libvirt-storage.html">storage</a>,
<a href="html/libvirt-libvirt-stream.html">stream</a>
</dd>
<dt><a href="drivers.html">Drivers</a></dt>
<dd>Hypervisor specific driver information</dd>
@@ -122,8 +118,8 @@
<dt><a href="hvsupport.html">Driver support</a></dt>
<dd>matrix of API support per hypervisor per release</dd>
<dt><a href="kbase.html">Knowledge Base</a></dt>
<dd>Task oriented guides to key features</dd>
<dt><a href="secureusage.html">Secure usage</a></dt>
<dd>Secure usage of the libvirt APIs</dd>
</dl>
</div>
@@ -133,12 +129,6 @@
<dt><a href="hacking.html">Contributor guidelines</a></dt>
<dd>General hacking guidelines for contributors</dd>
<dt><a href="styleguide.html">Docs style guide</a></dt>
<dd>Style guidelines for reStructuredText docs</dd>
<dt><a href="strategy.html">Project strategy</a></dt>
<dd>Sets a vision for future direction &amp; technical choices</dd>
<dt><a href="bugs.html">Bug reports</a></dt>
<dd>How and where to report bugs and request features</dd>
@@ -166,6 +156,9 @@
<dt><a href="internals/locking.html">Lock managers</a></dt>
<dd>Use lock managers to protect disk content</dd>
<dt><a href="internals/oomtesting.html">Out of memory testing</a></dt>
<dd>Simulating OOM conditions in the test suite</dd>
<dt><a href="testsuites.html">Functional testing</a></dt>
<dd>Testing libvirt with <a href="testtck.html">TCK test suite</a> and
<a href="testapi.html">Libvirt-test-API</a></dd>

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@@ -27,7 +27,8 @@
<tr>
<td>libvirt</td>
<td>
<a href="https://libvirt.org/sources/">libvirt</a>
<a href="ftp://libvirt.org/libvirt/">ftp</a>
<a href="https://libvirt.org/sources/">https</a>
</td>
<td>
<a href="https://libvirt.org/git/?p=libvirt.git;a=summary">libvirt</a>
@@ -47,7 +48,8 @@
<tr>
<td>C#</td>
<td>
<a href="https://libvirt.org/sources/csharp/">libvirt</a>
<a href="ftp://libvirt.org/libvirt/csharp/">ftp</a>
<a href="https://libvirt.org/sources/csharp/">https</a>
</td>
<td>
<a href="https://libvirt.org/git/?p=libvirt-csharp.git;a=summary">libvirt</a>
@@ -61,7 +63,8 @@
<tr>
<td>Go</td>
<td>
<a href="https://libvirt.org/sources/go/">libvirt</a>
<a href="ftp://libvirt.org/libvirt/go/">ftp</a>
<a href="https://libvirt.org/sources/go/">https</a>
</td>
<td>
<a href="https://libvirt.org/git/?p=libvirt-go.git;a=summary">libvirt</a>
@@ -77,7 +80,8 @@
<tr>
<td>Java</td>
<td>
<a href="https://libvirt.org/sources/java/">libvirt</a>
<a href="ftp://libvirt.org/libvirt/java/">ftp</a>
<a href="https://libvirt.org/sources/java/">https</a>
</td>
<td>
<a href="https://libvirt.org/git/?p=libvirt-java.git;a=summary">libvirt</a>
@@ -91,7 +95,8 @@
<tr>
<td>OCaml</td>
<td>
<a href="https://libvirt.org/sources/ocaml/">libvirt</a>
<a href="ftp://libvirt.org/libvirt/ocaml/">ftp</a>
<a href="https://libvirt.org/sources/ocaml/">https</a>
</td>
<td>
<a href="https://libvirt.org/git/?p=libvirt-ocaml.git;a=summary">libvirt</a>
@@ -105,7 +110,7 @@
<tr>
<td>Perl (Sys::Virt)</td>
<td>
<a href="https://metacpan.org/release/Sys-Virt/">cpan</a>
<a href="http://search.cpan.org/dist/Sys-Virt/">cpan</a>
</td>
<td>
<a href="https://libvirt.org/git/?p=libvirt-perl.git;a=summary">libvirt</a>
@@ -115,14 +120,15 @@
<a href="https://github.com/libvirt/libvirt-perl">github</a>
</td>
<td>
<a href="https://metacpan.org/release/Sys-Virt/">api ref</a>
<a href="http://search.cpan.org/dist/Sys-Virt/">api ref</a>
<a href="https://libvirt.org/git/?p=libvirt-perl.git;a=blob;f=Changes;hb=HEAD">changes</a>
</td>
</tr>
<tr>
<td>PHP</td>
<td>
<a href="https://libvirt.org/sources/php/">libvirt</a>
<a href="ftp://libvirt.org/libvirt/php/">ftp</a>
<a href="https://libvirt.org/sources/php/">https</a>
</td>
<td>
<a href="https://libvirt.org/git/?p=libvirt-php.git;a=summary">libvirt</a>
@@ -136,7 +142,8 @@
<tr>
<td>Python</td>
<td>
<a href="https://libvirt.org/sources/python/">libvirt</a>
<a href="ftp://libvirt.org/libvirt/python/">ftp</a>
<a href="https://libvirt.org/sources/python/">https</a>
<a href="https://pypi.python.org/pypi/libvirt-python">pypi</a>
</td>
<td>
@@ -151,7 +158,8 @@
<tr>
<td>Ruby</td>
<td>
<a href="https://libvirt.org/sources/ruby/">libvirt</a>
<a href="ftp://libvirt.org/libvirt/ruby/">ftp</a>
<a href="https://libvirt.org/sources/ruby/">https</a>
</td>
<td>
<a href="https://libvirt.org/git/?p=ruby-libvirt.git;a=summary">libvirt</a>
@@ -165,7 +173,8 @@
<tr>
<td>Rust</td>
<td>
<a href="https://libvirt.org/sources/rust/">libvirt</a>
<a href="ftp://libvirt.org/libvirt/rust/">ftp</a>
<a href="https://libvirt.org/sources/rust/">https</a>
</td>
<td>
<a href="https://libvirt.org/git/?p=libvirt-rust.git;a=summary">libvirt</a>
@@ -182,7 +191,8 @@
<tr>
<td>GLib / GConfig / GObject</td>
<td>
<a href="https://libvirt.org/sources/glib/">libvirt</a>
<a href="ftp://libvirt.org/libvirt/glib/">ftp</a>
<a href="https://libvirt.org/sources/glib/">https</a>
</td>
<td>
<a href="https://libvirt.org/git/?p=libvirt-glib.git;a=summary">libvirt</a>
@@ -196,7 +206,8 @@
<tr>
<td>Go XML</td>
<td>
<a href="https://libvirt.org/sources/go/">libvirt</a>
<a href="ftp://libvirt.org/libvirt/go/">ftp</a>
<a href="https://libvirt.org/sources/go/">https</a>
</td>
<td>
<a href="https://libvirt.org/git/?p=libvirt-go-xml.git;a=summary">libvirt</a>
@@ -212,7 +223,8 @@
<tr>
<td>D-Bus</td>
<td>
<a href="https://libvirt.org/sources/dbus/">libvirt</a>
<a href="ftp://libvirt.org/libvirt/dbus/">ftp</a>
<a href="https://libvirt.org/sources/dbus/">https</a>
</td>
<td>
<a href="https://libvirt.org/git/?p=libvirt-dbus.git;a=summary">libvirt</a>
@@ -226,7 +238,8 @@
<tr>
<td>Console Proxy</td>
<td>
<a href="https://libvirt.org/sources/consoleproxy/">libvirt</a>
<a href="ftp://libvirt.org/libvirt/consoleproxy/">ftp</a>
<a href="https://libvirt.org/sources/consoleproxy/">https</a>
</td>
<td>
<a href="https://libvirt.org/git/?p=libvirt-console-proxy.git;a=summary">libvirt</a>
@@ -240,7 +253,8 @@
<tr>
<td>CIM provider</td>
<td>
<a href="https://libvirt.org/sources/CIM/">libvirt</a>
<a href="ftp://libvirt.org/libvirt/CIM/">ftp</a>
<a href="https://libvirt.org/sources/CIM/">https</a>
</td>
<td>
<a href="https://libvirt.org/git/?p=libvirt-cim.git;a=summary">libvirt</a>
@@ -254,7 +268,8 @@
<tr>
<td>CIM utils</td>
<td>
<a href="https://libvirt.org/sources/CIM/">libvirt</a>
<a href="ftp://libvirt.org/libvirt/CIM/">ftp</a>
<a href="https://libvirt.org/sources/CIM/">https</a>
</td>
<td>
<a href="https://libvirt.org/git/?p=libcmpiutil.git;a=summary">libvirt</a>
@@ -268,7 +283,8 @@
<tr>
<td>SNMP</td>
<td>
<a href="https://libvirt.org/sources/snmp/">libvirt</a>
<a href="ftp://libvirt.org/libvirt/snmp/">ftp</a>
<a href="https://libvirt.org/sources/snmp/">https</a>
</td>
<td>
<a href="https://libvirt.org/git/?p=libvirt-snmp.git;a=summary">libvirt</a>
@@ -282,7 +298,8 @@
<tr>
<td>Application Sandbox</td>
<td>
<a href="https://libvirt.org/sources/sandbox/">libvirt</a>
<a href="ftp://libvirt.org/libvirt/sandbox/">ftp</a>
<a href="https://libvirt.org/sources/sandbox/">https</a>
</td>
<td>
<a href="https://libvirt.org/git/?p=libvirt-sandbox.git;a=summary">libvirt</a>
@@ -299,7 +316,8 @@
<tr>
<td>TCK</td>
<td>
<a href="https://libvirt.org/sources/tck/">libvirt</a>
<a href="ftp://libvirt.org/libvirt/tck/">ftp</a>
<a href="https://libvirt.org/sources/tck/">https</a>
</td>
<td>
<a href="https://libvirt.org/git/?p=libvirt-tck.git;a=summary">libvirt</a>
@@ -404,11 +422,14 @@
<p>
Most modules have releases made available for download on the project
site via HTTPS. Some modules are instead made available at alternative
locations, for example, the Perl binding is made available only on CPAN.
site, via FTP, HTTP or HTTPS. Some modules are instead made available
at alternative locations, for example, the Perl binding is made
available only on CPAN.
</p>
<ul>
<li><a href="ftp://libvirt.org/libvirt/">libvirt.org FTP server</a></li>
<li><a href="https://libvirt.org/sources/">libvirt.org HTTP server</a></li>
<li><a href="https://libvirt.org/sources/">libvirt.org HTTPS server</a></li>
</ul>

View File

@@ -6,7 +6,7 @@
<ul>
<li><a href="#hypervisor">Hypervisor drivers</a></li>
<li><a href="storage.html">Storage drivers</a></li>
<li><a href="#storage">Storage drivers</a></li>
<li><a href="drvnodedev.html">Node device driver</a></li>
</ul>
@@ -34,9 +34,24 @@
<li><strong><a href="drvvmware.html">VMware Workstation/Player</a></strong></li>
<li><strong><a href="drvxen.html">Xen</a></strong></li>
<li><strong><a href="drvhyperv.html">Microsoft Hyper-V</a></strong></li>
<li><strong><a href="drvphyp.html">IBM PowerVM (phyp)</a></strong></li>
<li><strong><a href="drvvirtuozzo.html">Virtuozzo</a></strong></li>
<li><strong><a href="drvbhyve.html">Bhyve</a></strong> - The BSD Hypervisor</li>
</ul>
<h2><a id="storage">Storage drivers</a></h2>
<ul>
<li><strong><a href="storage.html#StorageBackendDir">Directory backend</a></strong></li>
<li><strong><a href="storage.html#StorageBackendFS">Local filesystem backend</a></strong></li>
<li><strong><a href="storage.html#StorageBackendNetFS">Network filesystem backend</a></strong></li>
<li><strong><a href="storage.html#StorageBackendLogical">Logical Volume Manager (LVM) backend</a></strong></li>
<li><strong><a href="storage.html#StorageBackendDisk">Disk backend</a></strong></li>
<li><strong><a href="storage.html#StorageBackendISCSI">iSCSI backend</a></strong></li>
<li><strong><a href="storage.html#StorageBackendSCSI">SCSI backend</a></strong></li>
<li><strong><a href="storage.html#StorageBackendMultipath">Multipath backend</a></strong></li>
<li><strong><a href="storage.html#StorageBackendRBD">RBD (RADOS Block Device) backend</a></strong></li>
<li><strong><a href="storage.html#StorageBackendSheepdog">Sheepdog backend</a></strong></li>
</ul>
</body>
</html>

View File

@@ -462,32 +462,5 @@ Example:</p>
&lt;/domain&gt;
</pre>
<h3><a id="bhyvecommand">Pass-through of arbitrary bhyve commands</a></h3>
<p><span class="since">Since 5.1.0</span>, it's possible to pass additional command-line
arguments to the bhyve process when starting the domain using the
<code>&lt;bhyve:commandline&gt;</code> element under <code>domain</code>.
To supply an argument, use the element <code>&lt;bhyve:arg&gt;</code> with
the attribute <code>value</code> set to additional argument to be added.
The arg element may be repeated multiple times. To use this XML addition, it is necessary
to issue an XML namespace request (the special <code>xmlns:<i>name</i></code> attribute)
that pulls in <code>http://libvirt.org/schemas/domain/bhyve/1.0</code>;
typically, the namespace is given the name of <code>bhyve</code>.
</p>
<p>Example:</p>
<pre>
&lt;domain type="bhyve" xmlns:bhyve="http://libvirt.org/schemas/domain/bhyve/1.0"&gt;
...
&lt;bhyve:commandline&gt;
&lt;bhyve:arg value='-somebhyvearg'/&gt;
&lt;/bhyve:commandline&gt;
&lt;/domain&gt;
</pre>
<p>Note that these extensions are for testing and development purposes only.
They are <b>unsupported</b>, using them may result in inconsistent state,
and upgrading either bhyve or libvirtd maybe break behavior of a domain that
was relying on a specific commands pass-through.</p>
</body>
</html>

View File

@@ -337,9 +337,7 @@ error: invalid argument in libvirt was built without the 'esx' driver
Memory size has to be a multiple of 4096
</li>
<li>
Number of virtual CPU has to be 1 or a multiple of 2.
<span class="since">Since 4.10.0</span> any number of vCPUs is
supported.
Number of virtual CPU has to be 1 or a multiple of 2
</li>
<li>
Valid MAC address prefixes are <code>00:0c:29</code> and

50
docs/drvphyp.html.in Normal file
View File

@@ -0,0 +1,50 @@
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<body>
<h1>IBM PowerVM hypervisor driver (phyp)</h1>
<ul id="toc"></ul>
<p>
The IBM PowerVM driver can manage both HMC and IVM PowerVM
guests. VIOS connections are tunneled through HMC.
</p>
<h2><a id="project">Project Links</a></h2>
<ul>
<li>
The <a href="http://www-03.ibm.com/systems/power/software/virtualization/index.html">IBM
PowerVM</a> hypervisor
</li>
</ul>
<h2><a id="uri">Connections to the PowerVM driver</a></h2>
<p>
Some example remote connection URIs for the driver are:
</p>
<pre>
phyp://user@hmc/system (HMC connection)
phyp://user@ivm/system (IVM connection)
</pre>
<p>
<strong>Note</strong>: In contrast to other drivers, the
PowerVM (or phyp) driver is a client-side-only driver,
internally using ssh to connect to the specified hmc or ivm
server. Therefore, the <a href="remote.html">remote transport
mechanism</a> provided by the remote driver and libvirtd will
not work, and you cannot use URIs like
<code>phyp+ssh://example.com</code>.
</p>
<h3><a id="uriformat">URI Format</a></h3>
<p>
URIs have this general form (<code>[...]</code> marks an
optional part, <code>{...|...}</code> marks a mandatory choice).
</p>
<pre>
phyp://[username@]{hmc|ivm}/managed_system
</pre>
</body></html>

View File

@@ -38,7 +38,7 @@
<li>
<strong>KVM hypervisor</strong>: The driver will probe <code>/usr/bin</code>
for the presence of <code>qemu-kvm</code> and <code>/dev/kvm</code> device
node. If both are found, then KVM fully virtualized, hardware accelerated
node. If both are found, then KVM fullyvirtualized, hardware accelerated
guests will be available.
</li>
</ul>
@@ -187,29 +187,41 @@ chmod o+x /path/to/directory
</li>
</ul>
<p>
The libvirt maintainers <strong>strongly recommend against</strong>
running QEMU as the root user/group. This should not be required
in most supported usage scenarios, as libvirt will generally do the
right thing to grant QEMU access to files it is permitted to
use when it is running non-root.
</p>
<h3><a id="securitycap">Linux process capabilities</a></h3>
<p>
In versions of libvirt prior to 6.0.0, even if QEMU was configured
to run as the root user / group, libvirt would strip all process
capabilities. This meant that QEMU could only read/write files
owned by root, or with open permissions. In reality, stripping
capabilities did not have any security benefit, as it was trivial
to get commands to run in another context with full capabilities,
for example, by creating a cronjob.
The libvirt QEMU driver has a build time option allowing it to use
the <a href="http://people.redhat.com/sgrubb/libcap-ng/index.html">libcap-ng</a>
library to manage process capabilities. If this build option is
enabled, then the QEMU driver will use this to ensure that all
process capabilities are dropped before executing a QEMU virtual
machine. Process capabilities are what gives the 'root' account
its high power, in particular the CAP_DAC_OVERRIDE capability
is what allows a process running as 'root' to access files owned
by any user.
</p>
<p>
Thus since 6.0.0, if QEMU is running as root, it will keep all
process capabilities. Behaviour when QEMU is running non-root
is unchanged, it still has no capabilities.
If the QEMU driver is configured to run virtual machines as non-root,
then they will already lose all their process capabilities at time
of startup. The Linux capability feature is thus aimed primarily at
the scenario where the QEMU processes are running as root. In this
case, before launching a QEMU virtual machine, libvirtd will use
libcap-ng APIs to drop all process capabilities. It is important
for administrators to note that this implies the QEMU process will
<strong>only</strong> be able to access files owned by root, and
not files owned by any other user.
</p>
<p>
Thus, if a vendor / distributor has configured their libvirt package
to run as 'qemu' by default, a number of changes will be required
before an administrator can change a host to run guests as root.
In particular it will be necessary to change ownership on the
directories <code>/var/run/libvirt/qemu/</code>,
<code>/var/lib/libvirt/qemu/</code> and
<code>/var/cache/libvirt/qemu/</code> back to root, in addition
to changing the <code>/etc/libvirt/qemu.conf</code> settings.
</p>
<h3><a id="securityselinux">SELinux basic confinement</a></h3>
@@ -364,7 +376,7 @@ chmod o+x /path/to/directory
<h3><a id="securityacl">Cgroups device ACLs</a></h3>
<p>
Linux kernels have a capability known as "cgroups" which is used
Recent Linux kernels have a capability known as "cgroups" which is used
for resource management. It is implemented via a number of "controllers",
each controller covering a specific task/functional area. One of the
available controllers is the "devices" controller, which is able to
@@ -383,8 +395,9 @@ chmod o+x /path/to/directory
<pre>
/dev/null, /dev/full, /dev/zero,
/dev/random, /dev/urandom,
/dev/ptmx, /dev/kvm,
/dev/rtc, /dev/hpet
/dev/ptmx, /dev/kvm, /dev/kqemu,
/dev/rtc, /dev/hpet, /dev/net/tun,
/dev/sev
</pre>
<p>
@@ -414,10 +427,6 @@ mount -t cgroup none /dev/cgroup -o devices
<h3><a id="xmlimport">Converting from QEMU args to domain XML</a></h3>
<p>
<b>Note:</b> this operation is <span class="removed"> deleted as of
5.5.0</span> and will return an error.
</p>
<p>
The <code>virsh domxml-from-native</code> provides a way to
convert an existing set of QEMU args into a guest description
@@ -431,17 +440,82 @@ mount -t cgroup none /dev/cgroup -o devices
examples) or by manually crafting XML to pass to virsh.
</p>
<pre>$ cat &gt; demo.args &lt;&lt;EOF
LC_ALL=C PATH=/bin HOME=/home/test USER=test \
LOGNAME=test /usr/bin/qemu -S -M pc -m 214 -smp 1 \
-nographic -monitor pty -no-acpi -boot c -hda \
/dev/HostVG/QEMUGuest1 -net none -serial none \
-parallel none -usb
EOF
$ virsh domxml-from-native qemu-argv demo.args
&lt;domain type='qemu'&gt;
&lt;uuid&gt;00000000-0000-0000-0000-000000000000&lt;/uuid&gt;
&lt;memory&gt;219136&lt;/memory&gt;
&lt;currentMemory&gt;219136&lt;/currentMemory&gt;
&lt;vcpu&gt;1&lt;/vcpu&gt;
&lt;os&gt;
&lt;type arch='i686' machine='pc'&gt;hvm&lt;/type&gt;
&lt;boot dev='hd'/&gt;
&lt;/os&gt;
&lt;clock offset='utc'/&gt;
&lt;on_poweroff&gt;destroy&lt;/on_poweroff&gt;
&lt;on_reboot&gt;restart&lt;/on_reboot&gt;
&lt;on_crash&gt;destroy&lt;/on_crash&gt;
&lt;devices&gt;
&lt;emulator&gt;/usr/bin/qemu&lt;/emulator&gt;
&lt;disk type='block' device='disk'&gt;
&lt;source dev='/dev/HostVG/QEMUGuest1'/&gt;
&lt;target dev='hda' bus='ide'/&gt;
&lt;/disk&gt;
&lt;/devices&gt;
&lt;/domain&gt;
</pre>
<p>NB, don't include the literal \ in the args, put everything on one line</p>
<h3><a id="xmlexport">Converting from domain XML to QEMU args</a></h3>
<p>
The <code>virsh domxml-to-native</code> provides a way to convert a
guest description using libvirt Domain XML, into a set of QEMU args
that can be run manually. Note that currently the command line formatted
by libvirt is no longer suited for manually running qemu as the
configuration expects various resources and open file descriptors passed
to the process which are usually prepared by libvirtd.
that can be run manually.
</p>
<pre>$ cat &gt; demo.xml &lt;&lt;EOF
&lt;domain type='qemu'&gt;
&lt;name&gt;QEMUGuest1&lt;/name&gt;
&lt;uuid&gt;c7a5fdbd-edaf-9455-926a-d65c16db1809&lt;/uuid&gt;
&lt;memory&gt;219200&lt;/memory&gt;
&lt;currentMemory&gt;219200&lt;/currentMemory&gt;
&lt;vcpu&gt;1&lt;/vcpu&gt;
&lt;os&gt;
&lt;type arch='i686' machine='pc'&gt;hvm&lt;/type&gt;
&lt;boot dev='hd'/&gt;
&lt;/os&gt;
&lt;clock offset='utc'/&gt;
&lt;on_poweroff&gt;destroy&lt;/on_poweroff&gt;
&lt;on_reboot&gt;restart&lt;/on_reboot&gt;
&lt;on_crash&gt;destroy&lt;/on_crash&gt;
&lt;devices&gt;
&lt;emulator&gt;/usr/bin/qemu&lt;/emulator&gt;
&lt;disk type='block' device='disk'&gt;
&lt;source dev='/dev/HostVG/QEMUGuest1'/&gt;
&lt;target dev='hda' bus='ide'/&gt;
&lt;/disk&gt;
&lt;/devices&gt;
&lt;/domain&gt;
EOF
$ virsh domxml-to-native qemu-argv demo.xml
LC_ALL=C PATH=/usr/bin:/bin HOME=/home/test \
USER=test LOGNAME=test /usr/bin/qemu -S -M pc \
-no-kqemu -m 214 -smp 1 -name QEMUGuest1 -nographic \
-monitor pty -no-acpi -boot c -drive \
file=/dev/HostVG/QEMUGuest1,if=ide,index=0 -net none \
-serial none -parallel none -usb
</pre>
<h2><a id="qemucommand">Pass-through of arbitrary qemu
commands</a></h2>
@@ -466,8 +540,7 @@ mount -t cgroup none /dev/cgroup -o devices
qemu guest (<span class="since">Since 0.8.3</span>),
and <code>virDomainQemuAttach</code>, for registering a qemu
domain that was manually started so that it can then be managed
by libvirtd (<span class="since">Since 0.9.4</span>,
<span class="removed">removed as of 5.5.0</span>).
by libvirtd (<span class="since">Since 0.9.4</span>).
</p>
<p>Additionally, the following XML additions allow fine-tuning of
the command line given to qemu when starting a domain
@@ -508,36 +581,6 @@ mount -t cgroup none /dev/cgroup -o devices
&lt;qemu:env name='QEMU_ENV' value='VAL'/&gt;
&lt;/qemu:commandline&gt;
&lt;/domain&gt;
</pre>
<h2><a id="xmlnsfeatures">QEMU feature configuration for testing</a></h2>
<p>
In some cases e.g. when developing a new feature or for testing it may
be required to control a given qemu feature (or qemu capability) to test
it before it's complete or disable it for debugging purposes.
<span class="since">Since 5.5.0</span> it's possible to use the same
special qemu namespace as above
(<code>http://libvirt.org/schemas/domain/qemu/1.0</code>) and use
<code>&lt;qemu:capabilities&gt;</code> element to add
(<code>&lt;qemu:add capability="capname"/&gt;</code>) or remove
(<code>&lt;qemu:del capability="capname"/&gt;</code>) capability bits.
The naming of the feature bits is the same libvirt uses in the status
XML. Note that this feature is meant for experiments only and should
_not_ be used in production.
</p>
<p>Example:</p><pre>
&lt;domain type='qemu' xmlns:qemu='http://libvirt.org/schemas/domain/qemu/1.0'&gt;
&lt;name&gt;testvm&lt;/name&gt;
[...]
&lt;qemu:capabilities&gt;
&lt;qemu:add capability='blockdev'/&gt;
&lt;qemu:del capability='drive'/&gt;
&lt;/qemu:capabilities&gt;
&lt;/domain&gt;
</pre>
<h2><a id="xmlconfig">Example domain XML config</a></h2>

View File

@@ -58,7 +58,8 @@ xen+ssh://root@example.com/system (remote access, SSH tunnelled)
original Xen virtual machine config format used by the legacy
xm/xend toolstack. The second, known as <code>xen-sxpr</code>,
is also one of the original formats that was used by xend's
legacy HTTP RPC service (<span class='removed'>removed in 5.6.0</span>)
legacy HTTP RPC service. For compatibility, import and export
of these legacy formats is supported by the libxl driver.
</p>
<p>

View File

@@ -129,44 +129,6 @@ MASQUERADE all -- * * 192.168.122.0/24 !192.168.122.0/24</pre>
</li>
</ul>
<h3><a id="fw-firewalld-and-virtual-network-driver">firewalld and the virtual network driver</a>
</h3>
<p>
If <a href="https://firewalld.org">firewalld</a> is active on
the host, libvirt will attempt to place the bridge interface of
a libvirt virtual network into the firewalld zone named
"libvirt" (thus making all guest->host traffic on that network
subject to the rules of the "libvirt" zone). This is done
because, if firewalld is using its nftables backend (available
since firewalld 0.6.0) the default firewalld zone (which would
be used if libvirt didn't explicitly set the zone) prevents
forwarding traffic from guests through the bridge, as well as
preventing DHCP, DNS, and most other traffic from guests to
host. The zone named "libvirt" is installed into the firewalld
configuration by libvirt (not by firewalld), and allows
forwarded traffic through the bridge as well as DHCP, DNS, TFTP,
and SSH traffic to the host - depending on firewalld's backend
this will be implemented via either iptables or nftables
rules. libvirt's own rules outlined above will *always* be
iptables rules regardless of which backend is in use by
firewalld.
</p>
<p>
NB: It is possible to manually set the firewalld zone for a
network's interface with the "zone" attribute of the network's
"bridge" element.
</p>
<p>
NB: Prior to libvirt 5.1.0, the firewalld "libvirt" zone did not
exist, and prior to firewalld 0.7.0 a feature crucial to making
the "libvirt" zone operate properly (rich rule priority
settings) was not implemented in firewalld. In cases where one
or the other of the two packages is missing the necessary
functionality, it's still possible to have functional guest
networking by setting the firewalld backend to "iptables" (in
firewalld prior to 0.6.0, this was the only backend available).
</p>
<h3><a id="fw-network-filter-driver">The network filter driver</a>
</h3>
<p>This driver provides a fully configurable network filtering capability

View File

@@ -17,17 +17,13 @@
<li><a href="formatdomain.html">Domains</a></li>
<li><a href="formatnetwork.html">Networks</a></li>
<li><a href="formatnwfilter.html">Network filtering</a></li>
<li><a href="formatnetworkport.html">Network ports</a></li>
<li><a href="formatstorage.html">Storage</a></li>
<li><a href="formatstorageencryption.html">Storage encryption</a></li>
<li><a href="formatcaps.html">Capabilities</a></li>
<li><a href="formatdomaincaps.html">Domain capabilities</a></li>
<li><a href="formatstoragecaps.html">Storage Pool capabilities</a></li>
<li><a href="formatnode.html">Node devices</a></li>
<li><a href="formatsecret.html">Secrets</a></li>
<li><a href="formatsnapshot.html">Snapshots</a></li>
<li><a href="formatcheckpoint.html">Checkpoints</a></li>
<li><a href="formatbackup.html">Backup jobs</a></li>
</ul>
<h2>Command line validation</h2>

View File

@@ -1,175 +0,0 @@
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<body>
<h1>Backup XML format</h1>
<ul id="toc"></ul>
<h2><a id="BackupAttributes">Backup XML</a></h2>
<p>
Creating a backup, whether full or incremental, is done
via <code>virDomainBackupBegin()</code>, which takes an XML
description of the actions to perform, as well as an optional
second XML document <a href="formatcheckpoint.html">describing a
checkpoint</a> to create at the same point in time. See
also <a href="domainstatecapture.html">a comparison</a> between
the various state capture APIs.
</p>
<p>
There are two general modes for backups: a push mode (where the
hypervisor writes out the data to the destination file, which
may be local or remote), and a pull mode (where the hypervisor
creates an NBD server that a third-party client can then read as
needed, and which requires the use of temporary storage,
typically local, until the backup is complete).
</p>
<p>
The instructions for beginning a backup job are provided as
attributes and elements of the
top-level <code>domainbackup</code> element. This element
includes an optional attribute <code>mode</code> which can be
either "push" or "pull" (default
push). <code>virDomainBackupGetXMLDesc()</code> can be used to
see the actual values selected for elements omitted during
creation (for example, learning which port the NBD server is
using in the pull model or what file names libvirt generated
when none were supplied). The following child elements and attributes
are supported:
</p>
<dl>
<dt><code>incremental</code></dt>
<dd>An optional element giving the name of an existing
checkpoint of the domain, which will be used to make this
backup an incremental one. In the push model, only changes
since the named checkpoint are written to the destination. In
the pull model, the NBD server uses the
NBD_OPT_SET_META_CONTEXT extension to advertise to the client
which portions of the export contain changes since the named
checkpoint. If omitted, a full backup is performed.
</dd>
<dt><code>server</code></dt>
<dd>Present only for a pull mode backup. Contains the same
attributes as
the <a href="formatdomain.html#elementsDisks"><code>protocol</code>
element of a disk</a> attached via NBD in the domain (such as
transport, socket, name, port, or tls), necessary to set up an
NBD server that exposes the content of each disk at the time
the backup is started.
</dd>
<dt><code>disks</code></dt>
<dd>An optional listing of instructions for disks participating
in the backup (if omitted, all disks participate and libvirt
attempts to generate filenames by appending the current
timestamp as a suffix). If the entire element was omitted on
input, then all disks participate in the backup, otherwise,
only the disks explicitly listed which do not also
use <code>backup='no'</code> will participate. On output, this
is the state of each of the domain's disk in relation to the
backup operation.
<dl>
<dt><code>disk</code></dt>
<dd>This sub-element describes the backup properties of a
specific disk, with the following attributes and child
elements:
<dl>
<dt><code>name</code></dt>
<dd>A mandatory attribute which must match
the <code>&lt;target dev='name'/&gt;</code>
of one of
the <a href="formatdomain.html#elementsDisks">disk
devices</a> specified for the domain at the time of
the checkpoint.</dd>
<dt><code>backup</code></dt>
<dd>Setting this attribute to <code>yes</code>(default) specifies
that the disk should take part in the backup and using
<code>no</code> excludes the disk from the backup.</dd>
<dt><code>type</code></dt>
<dd>A mandatory attribute to describe the type of the
disk, except when <code>backup='no'</code> is
used. Valid values include <code>file</code>,
<code>block</code>, or <code>network</code>.
Similar to a disk declaration for a domain, the choice of type
controls what additional sub-elements are needed to describe
the destination (such as <code>protocol</code> for a
network destination).</dd>
<dt><code>target</code></dt>
<dd>Valid only for push mode backups, this is the
primary sub-element that describes the file name of
the backup destination, similar to
the <code>source</code> sub-element of a domain
disk. An optional sub-element <code>driver</code> can
also be used, with an attribute <code>type</code> to
specify a destination format different from
qcow2. </dd>
<dt><code>scratch</code></dt>
<dd>Valid only for pull mode backups, this is the
primary sub-element that describes the file name of
the local scratch file to be used in facilitating the
backup, and is similar to the <code>source</code>
sub-element of a domain disk. Currently only <code>file</code>
and <code>block</code> scratch storage is supported. The
<code>file</code> scratch file is created and deleted by
libvirt in the given location. A <code>block</code> scratch
device must exist prior to starting the backup and is formatted.
The block device must have enough space for the corresponding
disk data including format overhead.
If <code>VIR_DOMAIN_BACKUP_BEGIN_REUSE_EXTERNAL</code> flag is
used the file for a scratch of <code>file</code> type must
exist with the correct format and size to hold the copy and is
used without modification. The file is not deleted after the
backup but the contents of the file don't make sense outside
of the backup. The same applies for the block device which
must be formatted appropriately.</dd>
</dl>
</dd>
</dl>
</dd>
</dl>
<h2><a id="example">Examples</a></h2>
<p>Use <code>virDomainBackupBegin()</code> to perform a full
backup using push mode. The example lets libvirt pick the
destination and format for 'vda', fully specifies that we want a
raw backup of 'vdb', and omits 'vdc' from the operation.
</p>
<pre>
&lt;domainbackup&gt;
&lt;disks&gt;
&lt;disk name='vda' backup='yes'/&gt;
&lt;disk name='vdb' type='file'&gt;
&lt;target file='/path/to/vdb.backup'/&gt;
&lt;driver type='raw'/&gt;
&lt;/disk&gt;
&lt;disk name='vdc' backup='no'/&gt;
&lt;/disks&gt;
&lt;/domainbackup&gt;
</pre>
<p>If the previous full backup also passed a parameter describing
<a href="formatcheckpoint.html">checkpoint XML</a> that resulted
in a checkpoint named <code>1525889631</code>, we can make
another call to <code>virDomainBackupBegin()</code> to perform
an incremental backup of just the data changed since that
checkpoint, this time using the following XML to start a pull
model export of the 'vda' and 'vdb' disks, where a third-party
NBD client connecting to '/path/to/server' completes the backup
(omitting 'vdc' from the explicit list has the same effect as
the backup='no' from the previous example):
</p>
<pre>
&lt;domainbackup mode="pull"&gt;
&lt;incremental&gt;1525889631&lt;/incremental&gt;
&lt;server transport="unix" socket="/path/to/server"/&gt;
&lt;disks&gt;
&lt;disk name='vda' backup='yes' type='file'&gt;
&lt;scratch file='/path/to/file1.scratch'/&gt;
&lt;/disk&gt;
&lt;/disks&gt;
&lt;/domainbackup&gt;
</pre>
</body>
</html>

View File

@@ -1,198 +0,0 @@
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<body>
<h1>Checkpoint XML format</h1>
<ul id="toc"></ul>
<h2><a id="CheckpointAttributes">Checkpoint XML</a></h2>
<p>
One method of capturing domain disk backups is via the use of
incremental backups. Right now, incremental backups are only
supported for the QEMU hypervisor when using qcow2 disks at the
active layer; if other disk formats are in use, capturing disk
backups requires different libvirt APIs
(see <a href="kbase/domainstatecapture.html">domain state
capture</a> for a comparison between APIs).
</p>
<p>
Libvirt is able to facilitate incremental backups by tracking
disk checkpoints, which are points in time against which it is
easy to compute which portion of the disk has changed. Given a
full backup (a backup created from the creation of the disk to a
given point in time), coupled with the creation of a disk
checkpoint at that time, and an incremental backup (a backup
created from just the dirty portion of the disk between the
first checkpoint and the second backup operation), it is
possible to do an offline reconstruction of the state of the
disk at the time of the second backup without having to copy as
much data as a second full backup would require. Most disk
checkpoints are created in conjunction with a backup
via <code>virDomainBackupBegin()</code>, although a future API
addition of <code>virDomainSnapshotCreateXML2()</code> will also
make this possible when creating external snapshots; however,
libvirt also exposes enough support to create disk checkpoints
independently from a backup operation
via <code>virDomainCheckpointCreateXML()</code> <span class="since">since
5.6.0</span>. Likewise, the creation of checkpoints when
external snapshots exist is currently forbidden, although future
work will make it possible to integrate these two concepts.
</p>
<p>
Attributes of libvirt checkpoints are stored as child elements
of the <code>domaincheckpoint</code> element. At checkpoint
creation time, normally only
the <code>name</code>, <code>description</code>,
and <code>disks</code> elements are settable. The rest of the
fields are ignored on creation and will be filled in by libvirt
in for informational purposes
by <code>virDomainCheckpointGetXMLDesc()</code>. However, when
redefining a checkpoint, with
the <code>VIR_DOMAIN_CHECKPOINT_CREATE_REDEFINE</code> flag
of <code>virDomainCheckpointCreateXML()</code>, all of the XML
fields described here are relevant on input, even the fields
that are normally described as readonly for output.
</p>
<p>
The top-level <code>domaincheckpoint</code> element may contain
the following elements:
</p>
<dl>
<dt><code>name</code></dt>
<dd>The optional name for this checkpoint. If the name is
omitted, libvirt will create a name based on the time of the
creation.
</dd>
<dt><code>description</code></dt>
<dd>An optional human-readable description of the checkpoint.
If the description is omitted when initially creating the
checkpoint, then this field will be empty.
</dd>
<dt><code>disks</code></dt>
<dd>On input, this is an optional listing of specific
instructions for disk checkpoints; it is needed when making a
checkpoint on only a subset of the disks associated with a
domain. In particular, since QEMU checkpoints require qcow2
disks, this element may be needed on input for excluding guest
disks that are not in qcow2 format. If the entire element was
omitted on input, then all disks participate in the
checkpoint, otherwise, only the disks explicitly listed which
do not also use <code>checkpoint='no'</code> will
participate. On output, this is the checkpoint state of each
of the domain's disks.
<dl>
<dt><code>disk</code></dt>
<dd>This sub-element describes the checkpoint properties of
a specific disk with the following attributes:
<dl>
<dt><code>name</code></dt>
<dd>A mandatory attribute which must match either
the <code>&lt;target dev='name'/&gt;</code> or an
unambiguous <code>&lt;source file='name'/&gt;</code>
of one of
the <a href="formatdomain.html#elementsDisks">disk
devices</a> specified for the domain at the time of
the checkpoint.</dd>
<dt><code>checkpoint</code></dt>
<dd>An optional attribute; possible values
are <code>no</code> when the disk does not participate
in this checkpoint; or <code>bitmap</code> if the disk
will track all changes since the creation of this
checkpoint via a bitmap.</dd>
<dt><code>bitmap</code></dt>
<dd>The attribute <code>bitmap</code> is only valid
if <code>checkpoint='bitmap'</code>; it describes the
name of the tracking bitmap (defaulting to the
checkpoint name).</dd>
<dt><code>size</code></dt>
<dd>The attribute <code>size</code> is ignored on input;
on output, it is only present if
the <code>VIR_DOMAIN_CHECKPOINT_XML_SIZE</code> flag
was used to perform a dynamic query of the estimated
size in bytes of the changes made since the checkpoint
was created.</dd>
</dl>
</dd>
</dl>
</dd>
<dt><code>creationTime</code></dt>
<dd>A readonly representation of the time this checkpoint was
created. The time is specified in seconds since the Epoch,
UTC (i.e. Unix time).
</dd>
<dt><code>parent</code></dt>
<dd>Readonly, present if this checkpoint has a parent. The
parent name is given by the sub-element <code>name</code>. The
parent relationship allows tracking a list of related checkpoints.
</dd>
<dt><code>domain</code></dt>
<dd>A readonly representation of the
inactive <a href="formatdomain.html">domain configuration</a>
at the time the checkpoint was created. This element may be
omitted for output brevity by supplying
the <code>VIR_DOMAIN_CHECKPOINT_XML_NO_DOMAIN</code> flag, but
the resulting XML is no longer viable for use with
the <code>VIR_DOMAIN_CHECKPOINT_CREATE_REDEFINE</code> flag
of <code>virDomainCheckpointCreateXML()</code>. The domain
will have security-sensitive information omitted unless the
flag <code>VIR_DOMAIN_CHECKPOINT_XML_SECURE</code> is provided
on a read-write connection.
</dd>
</dl>
<h2><a id="example">Examples</a></h2>
<p>Using this XML to create a checkpoint of just vda on a qemu
domain with two disks and a prior checkpoint:</p>
<pre>
&lt;domaincheckpoint&gt;
&lt;description&gt;Completion of updates after OS install&lt;/description&gt;
&lt;disks&gt;
&lt;disk name='vda' checkpoint='bitmap'/&gt;
&lt;disk name='vdb' checkpoint='no'/&gt;
&lt;/disks&gt;
&lt;/domaincheckpoint&gt;</pre>
<p>will result in XML similar to this from
<code>virDomainCheckpointGetXMLDesc()</code>:</p>
<pre>
&lt;domaincheckpoint&gt;
&lt;name&gt;1525889631&lt;/name&gt;
&lt;description&gt;Completion of updates after OS install&lt;/description&gt;
&lt;parent&gt;
&lt;name&gt;1525111885&lt;/name&gt;
&lt;/parent&gt;
&lt;creationTime&gt;1525889631&lt;/creationTime&gt;
&lt;disks&gt;
&lt;disk name='vda' checkpoint='bitmap' bitmap='1525889631'/&gt;
&lt;disk name='vdb' checkpoint='no'/&gt;
&lt;/disks&gt;
&lt;domain type='qemu'&gt;
&lt;name&gt;fedora&lt;/name&gt;
&lt;uuid&gt;93a5c045-6457-2c09-e56c-927cdf34e178&lt;/uuid&gt;
&lt;memory&gt;1048576&lt;/memory&gt;
...
&lt;devices&gt;
&lt;disk type='file' device='disk'&gt;
&lt;driver name='qemu' type='qcow2'/&gt;
&lt;source file='/path/to/file1'/&gt;
&lt;target dev='vda' bus='virtio'/&gt;
&lt;/disk&gt;
&lt;disk type='file' device='disk' snapshot='external'&gt;
&lt;driver name='qemu' type='raw'/&gt;
&lt;source file='/path/to/file2'/&gt;
&lt;target dev='vdb' bus='virtio'/&gt;
&lt;/disk&gt;
...
&lt;/devices&gt;
&lt;/domain&gt;
&lt;/domaincheckpoint&gt;</pre>
<p>With that checkpoint created, the qcow2 image is now tracking
all changes that occur in the image since the checkpoint via
the persistent bitmap named <code>1525889631</code>.
</p>
</body>
</html>

View File

@@ -22,7 +22,7 @@
<a id="attributeDomainType"><code>type</code></a>
specifies the hypervisor used for running
the domain. The allowed values are driver specific, but
include "xen", "kvm", "qemu" and "lxc". The
include "xen", "kvm", "qemu", "lxc" and "kqemu". The
second attribute is <code>id</code> which is a unique
integer identifier for the running guest machine. Inactive
machines have no id value.
@@ -128,7 +128,7 @@
<pre>
...
&lt;os firmware='efi'&gt;
&lt;os&gt;
&lt;type&gt;hvm&lt;/type&gt;
&lt;loader readonly='yes' secure='no' type='rom'&gt;/usr/lib/xen/boot/hvmloader&lt;/loader&gt;
&lt;nvram template='/usr/share/OVMF/OVMF_VARS.fd'&gt;/var/lib/libvirt/nvram/guest_VARS.fd&lt;/nvram&gt;
@@ -141,29 +141,6 @@
...</pre>
<dl>
<dt><code>firmware</code></dt>
<dd>The <code>firmware</code> attribute allows management
applications to automatically fill <code>&lt;loader/&gt;</code>
and <code>&lt;nvram/&gt;</code> elements and possibly enable
some features required by selected firmware. Accepted values are
<code>bios</code> and <code>efi</code>.<br/>
The selection process scans for files describing installed
firmware images in specified location and uses the most specific
one which fulfils domain requirements. The locations in order of
preference (from generic to most specific one) are:
<ul>
<li><code>/usr/share/qemu/firmware</code></li>
<li><code>/etc/qemu/firmware</code></li>
<li><code>$XDG_CONFIG_HOME/qemu/firmware</code></li>
</ul>
For more information refer to firmware metadata specification as
described in <code>docs/interop/firmware.json</code> in QEMU
repository. Regular users do not need to bother.
<span class="since">Since 5.2.0 (QEMU and KVM only)</span><br/>
For VMware guests, this is set to <code>efi</code> when the guest
uses UEFI, and it is not set when using BIOS.
<span class="since">Since 5.3.0 (VMware ESX and Workstation/Player)</span>
</dd>
<dt><code>type</code></dt>
<dd>The content of the <code>type</code> element specifies the
type of operating system to be booted in the virtual machine.
@@ -175,11 +152,7 @@
and <a id="attributeOSTypeMachine"><code>machine</code></a> referring
to the machine type. The <a href="formatcaps.html">Capabilities XML</a>
provides details on allowed values for
these. If <code>arch</code> is omitted then for most hypervisor
drivers, the host native arch will be chosen. For the <code>test</code>,
<code>ESX</code> and <code>VMWare</code> hypervisor drivers, however,
the <code>i686</code> arch will always be chosen even on an
<code>x86_64</code> host. <span class="since">Since 0.0.1</span></dd>
these. <span class="since">Since 0.0.1</span></dd>
<dt><a id="elementLoader"><code>loader</code></a></dt>
<dd>The optional <code>loader</code> tag refers to a firmware blob,
which is specified by absolute path,
@@ -367,8 +340,7 @@
<dd>The <code>table</code> element contains a fully-qualified path
to the ACPI table. The <code>type</code> attribute contains the
ACPI table type (currently only <code>slic</code> is supported)
<span class="since">Since 1.3.5 (QEMU)</span>
<span class="since">Since 5.9.0 (Xen)</span></dd>
<span class="since">Since 1.3.5 (QEMU only)</span></dd>
</dl>
<h4><a id="elementsOSContainer">Container boot</a></h4>
@@ -943,22 +915,16 @@
<span class="since">Only QEMU driver support since 2.1.0</span>
</dd>
<dt><code>vcpusched</code>, <code>iothreadsched</code>
and <code>emulatorsched</code></dt>
<dt><code>vcpusched</code> and <code>iothreadsched</code></dt>
<dd>
The optional
<code>vcpusched</code>, <code>iothreadsched</code>
and <code>emulatorsched</code> elements specify the scheduler type
(values <code>batch</code>, <code>idle</code>, <code>fifo</code>,
<code>rr</code>) for particular vCPU, IOThread and emulator threads
respecively. For <code>vcpusched</code> and <code>iothreadsched</code>
the attributes <code>vcpus</code> and <code>iothreads</code> select
which vCPUs/IOThreads this setting applies to, leaving them out sets the
default. The element <code>emulatorsched</code> does not have that
attribute. Valid <code>vcpus</code> values start at 0 through one less
than the number of vCPU's defined for the
domain. Valid <code>iothreads</code> values are described in
the <code>iothreadids</code>
The optional <code>vcpusched</code> elements specifies the scheduler
type (values <code>batch</code>, <code>idle</code>, <code>fifo</code>,
<code>rr</code>) for particular vCPU/IOThread threads (based on
<code>vcpus</code> and <code>iothreads</code>, leaving out
<code>vcpus</code>/<code>iothreads</code> sets the default). Valid
<code>vcpus</code> values start at 0 through one less than the
number of vCPU's defined for the domain. Valid <code>iothreads</code>
values are described in the <code>iothreadids</code>
<a href="#elementsIOThreadsAllocation"><code>description</code></a>.
If no <code>iothreadids</code> are defined, then libvirt numbers
IOThreads from 1 to the number of <code>iothreads</code> available
@@ -967,7 +933,6 @@
well (and is ignored for non-real-time ones). The value range
for the priority depends on the host kernel (usually 1-99).
<span class="since">Since 1.2.13</span>
<code>emulatorsched</code> <span class="since">since 5.3.0</span>
</dd>
<dt><code>cachetune</code><span class="since">Since 4.1.0</span></dt>
@@ -1595,8 +1560,8 @@
hand, the ABI provided to the guest is reproducible. During
migration, complete CPU model definition is transferred to the
destination host so the migrated guest will see exactly the same CPU
model for the running instance of the guest, even if the destination
host contains more capable CPUs or newer kernel; but shutting down and restarting
model even if the destination host contains more capable CPUs for
the running instance of the guest; but shutting down and restarting
the guest may present different hardware to the guest according to
the capabilities of the new host. Prior to libvirt 3.2.0 and QEMU
2.9.0 detection of the host CPU model via QEMU is not supported.
@@ -1630,10 +1595,10 @@
environment cannot be reproduced on different hardware. Thus, if you
hit any bugs, you are on your own. Further details of that CPU can
be changed using <code>feature</code> elements. Migration of a guest
using host-passthrough is dangerous if the source and destination hosts
are not identical in both hardware, QEMU version, microcode version
and configuration. If such a migration is attempted then the guest may
hang or crash upon resuming execution on the destination host.</dd>
using host-passthrough is dangerous if the source and destination
hosts are not identical in both hardware and configuration. If such
a migration is attempted then the guest may hang or crash upon
resuming execution on the destination host.</dd>
</dl>
Both <code>host-model</code> and <code>host-passthrough</code> modes
@@ -1964,7 +1929,7 @@
<span class="since">Since 3.9.0</span>, the lifecycle events can
be configured via the
<a href="html/libvirt-libvirt-domain.html#virDomainSetLifecycleAction">
<code>virDomainSetLifecycleAction</code></a> API.
<code>virDomainSetLifecycleAction</code></a> API.
</p>
<p>
@@ -2038,9 +2003,6 @@
&lt;vpindex state='on'/&gt;
&lt;runtime state='on'/&gt;
&lt;synic state='on'/&gt;
&lt;stimer state='on'&gt;
&lt;direct state='on'/&gt;
&lt;/stimer&gt;
&lt;reset state='on'/&gt;
&lt;vendor_id state='on' value='KVM Hv'/&gt;
&lt;frequencies state='on'/&gt;
@@ -2051,7 +2013,6 @@
&lt;/hyperv&gt;
&lt;kvm&gt;
&lt;hidden state='on'/&gt;
&lt;hint-dedicated state='on'/&gt;
&lt;/kvm&gt;
&lt;pvspinlock state='on'/&gt;
&lt;gic version='2'/&gt;
@@ -2064,8 +2025,6 @@
&lt;tseg unit='MiB'&gt;48&lt;/tseg&gt;
&lt;/smm&gt;
&lt;htm state='on'/&gt;
&lt;ccf-assist state='on'/&gt;
&lt;msrs unknown='ignore'/&gt;
&lt;/features&gt;
...</pre>
@@ -2151,15 +2110,15 @@
</tr>
<tr>
<td>synic</td>
<td>Enable Synthetic Interrupt Controller (SynIC)</td>
<td>Enable Synthetic Interrupt Controller (SyNIC)</td>
<td>on, off</td>
<td><span class="since">1.3.3 (QEMU 2.6)</span></td>
</tr>
<tr>
<td>stimer</td>
<td>Enable SynIC timers, optionally with Direct Mode support</td>
<td>on, off; direct - on,off</td>
<td><span class="since">1.3.3 (QEMU 2.6), direct mode 5.7.0 (QEMU 4.1)</span></td>
<td>Enable SyNIC timers</td>
<td>on, off</td>
<td><span class="since">1.3.3 (QEMU 2.6)</span></td>
</tr>
<tr>
<td>reset</td>
@@ -2226,12 +2185,6 @@
<td>on, off</td>
<td><span class="since">1.2.8 (QEMU 2.1.0)</span></td>
</tr>
<tr>
<td>hint-dedicated</td>
<td>Allows a guest to enable optimizations when running on dedicated vCPUs</td>
<td>on, off</td>
<td><span class="since">5.7.0 (QEMU 2.12.0)</span></td>
</tr>
</table>
</dd>
<dt><code>pmu</code></dt>
@@ -2354,23 +2307,6 @@
defined, the hypervisor default will be used.
<span class="since">Since 4.10.0</span> (QEMU/KVM only)
</dd>
<dt><code>msrs</code></dt>
<dd>Some guests might require ignoring unknown
Model Specific Registers (MSRs) reads and writes. It's possible
to switch this by setting <code>unknown</code> attribute
of <code>msrs</code> to <code>ignore</code>. If the attribute is
not defined, or set to <code>fault</code>, unknown reads and writes
will not be ignored.
<span class="since">Since 5.1.0</span> (bhyve only)
</dd>
<dt><code>ccf-assist</code></dt>
<dd>Configure ccf-assist (Count Cache Flush Assist) availability for
pSeries guests.
Possible values for the <code>state</code> attribute
are <code>on</code> and <code>off</code>. If the attribute is not
defined, the hypervisor default will be used.
<span class="since">Since 5.9.0</span> (QEMU/KVM only)
</dd>
</dl>
<h3><a id="elementsTime">Time keeping</a></h3>
@@ -2463,9 +2399,7 @@
being modified, and can be one of
"platform" (currently unsupported),
"hpet" (libxl, xen, qemu), "kvmclock" (qemu),
"pit" (qemu), "rtc" (qemu), "tsc" (libxl, qemu -
<span class="since">since 3.2.0</span>)
or "hypervclock"
"pit" (qemu), "rtc" (qemu), "tsc" (libxl) or "hypervclock"
(qemu - <span class="since">since 1.2.2</span>).
The <code>hypervclock</code> timer adds support for the
@@ -2948,13 +2882,6 @@
&lt;/backingStore&gt;
&lt;target dev='vdd' bus='virtio'/&gt;
&lt;/disk&gt;
&lt;disk type='nvme' device='disk'&gt;
&lt;driver name='qemu' type='raw'/&gt;
&lt;source type='pci' managed='yes' namespace='1'&gt;
&lt;address domain='0x0000' bus='0x01' slot='0x00' function='0x0'/&gt;
&lt;/source&gt;
&lt;target dev='vde' bus='virtio'/&gt;
&lt;/disk&gt;
&lt;/devices&gt;
...</pre>
@@ -2968,8 +2895,7 @@
Valid values are "file", "block",
"dir" (<span class="since">since 0.7.5</span>),
"network" (<span class="since">since 0.8.7</span>), or
"volume" (<span class="since">since 1.0.5</span>), or
"nvme" (<span class="since">since 6.0.0</span>)
"volume" (<span class="since">since 1.0.5</span>)
and refer to the underlying source for the disk.
<span class="since">Since 0.0.3</span>
</dd>
@@ -2996,17 +2922,6 @@
<span class="since">Since 0.1.4</span>
</p>
</dd>
<dt><code>model</code></dt>
<dd>
Indicates the emulated device model of the disk. Typically
this is indicated solely by the <code>bus</code> property but
for <code>bus</code> "virtio" the model can be specified further
with "virtio-transitional", "virtio-non-transitional", or
"virtio". See
<a href="#elementsVirtioTransitional">Virtio transitional devices</a>
for more details.
<span class="since">Since 5.2.0</span>
</dd>
<dt><code>rawio</code></dt>
<dd>
Indicates whether the disk needs rawio capability. Valid
@@ -3152,43 +3067,6 @@
<span class="since">Since 1.0.5</span>
</p>
</dd>
<dt><code>nvme</code></dt>
<dd>
To specify disk source for NVMe disk the <code>source</code>
element has the following attributes:
<dl>
<dt><code>type</code></dt>
<dd>The type of address specified in <code>address</code>
sub-element. Currently, only <code>pci</code> value is
accepted.
</dd>
<dt><code>managed</code></dt>
<dd>This attribute instructs libvirt to detach NVMe
controller automatically on domain startup (<code>yes</code>)
or expect the controller to be detached by system
administrator (<code>no</code>).
</dd>
<dt><code>namespace</code></dt>
<dd>The namespace ID which should be assigned to the domain.
According to NVMe standard, namespace numbers start from 1,
including.
</dd>
</dl>
The difference between <code>&lt;disk type='nvme'&gt;</code>
and <code>&lt;hostdev/&gt;</code> is that the latter is plain
host device assignment with all its limitations (e.g. no live
migration), while the former makes hypervisor to run the NVMe
disk through hypervisor's block layer thus enabling all
features provided by the layer (e.g. snapshots, domain
migration, etc.). Moreover, since the NVMe disk is unbinded
from its PCI driver, the host kernel storage stack is not
involved (compared to passing say <code>/dev/nvme0n1</code> via
<code>&lt;disk type='block'&gt;</code> and therefore lower
latencies can be achieved.
</dd>
</dl>
With "file", "block", and "volume", one or more optional
sub-elements <code>seclabel</code>, <a href="#seclabel">described
@@ -3351,12 +3229,6 @@
initiator IQN needed to access the source via mandatory
attribute <code>name</code>.
</dd>
<dt><code>address</code></dt>
<dd>For disk of type <code>nvme</code> this element
specifies the PCI address of the host NVMe
controller.
<span class="since">Since 6.0.0</span>
</dd>
</dl>
<p>
@@ -3395,26 +3267,15 @@
<dt><code>backingStore</code></dt>
<dd>
This element describes the backing store used by the disk
specified by sibling <code>source</code> element.
<span class="since">Since 1.2.4.</span>
If the hypervisor driver does not support the
<a href='formatdomaincaps.html#featureBackingStoreInput'>
<code>backingStoreInput</code></a>
(<span class='since'>Since 5.10.0</span>)
domain feature the <code>backingStore</code> is ignored on
input and only used for output to describe the detected
backing chains of running domains.
If <code>backingStoreInput</code> is supported
the <code>backingStore</code> is used as the backing image of
<code>source</code> or other <code>backingStore</code> overriding
any backing image information recorded in the image metadata.
An empty <code>backingStore</code> element means the sibling
source is self-contained and is not based on any backing store.
For the detected backing chain information to be accurate, the
specified by sibling <code>source</code> element. It is
currently ignored on input and only used for output to
describe the detected backing chains of running
domains <span class="since">since 1.2.4</span> (although a
future version of libvirt may start accepting chains on input,
or output information for offline domains). An
empty <code>backingStore</code> element means the sibling
source is self-contained and is not based on any backing
store. For backing chain information to be accurate, the
backing format must be correctly specified in the metadata of
each file of the chain (files created by libvirt satisfy this
property, but using existing external files for snapshot or
@@ -3913,7 +3774,7 @@
&lt;readonly/&gt;
&lt;/filesystem&gt;
&lt;filesystem type='file' accessmode='passthrough'&gt;
&lt;driver type='loop' format='raw'/&gt;
&lt;driver name='loop' type='raw'/&gt;
&lt;driver type='path' wrpolicy='immediate'/&gt;
&lt;source file='/export/to/guest.img'/&gt;
&lt;target dir='/import/from/host'/&gt;
@@ -3979,7 +3840,7 @@
<span class="since"> (since 0.9.13)</span></dd>
</dl>
The filesystem element has an optional attribute <code>accessmode</code>
The filesystem block has an optional attribute <code>accessmode</code>
which specifies the security mode for accessing the source
<span class="since">(since 0.8.5)</span>. Currently this only works
with <code>type='mount'</code> for the QEMU/KVM driver. The possible
@@ -4009,11 +3870,6 @@
</dd>
</dl>
<span class="since">Since 5.2.0</span>, the filesystem element
has an optional attribute <code>model</code> with supported values
"virtio-transitional", "virtio-non-transitional", or "virtio".
See <a href="#elementsVirtioTransitional">Virtio transitional devices</a>
for more details.
</dd>
<dt><code>driver</code></dt>
@@ -4164,9 +4020,9 @@
</dd>
<dt><code>spapr-vio</code></dt>
<dd>On PowerPC pseries guests, devices can be assigned to the
SPAPR-VIO bus. It has a flat 32-bit address space; by
SPAPR-VIO bus. It has a flat 64-bit address space; by
convention, devices are generally assigned at a non-zero
multiple of 0x00001000, but other addresses are valid and
multiple of 0x1000, but other addresses are valid and
permitted by libvirt. Each address has the following
additional attribute: <code>reg</code> (the hex value address
of the starting register). <span class="since">Since
@@ -4203,16 +4059,6 @@
attributes: <code>iobase</code> and <code>irq</code>.
<span class="since">Since 1.2.1</span>
</dd>
<dt><code>unassigned</code></dt>
<dd>For PCI hostdevs, <code>&lt;address type='unassigned'/&gt;</code>
allows the admin to include a PCI hostdev in the domain XML definition,
without making it available for the guest. This allows for configurations
in which Libvirt manages the device as a regular PCI hostdev,
regardless of whether the guest will have access to it.
<code>&lt;address type='unassigned'/&gt;</code> is an invalid address
type for all other device types.
<span class="since">Since 6.0.0</span>
</dd>
</dl>
<h4><a id="elementsVirtio">Virtio-related options</a></h4>
@@ -4228,63 +4074,6 @@
<span class="since">Since 3.5.0</span>
</p>
<h4><a id="elementsVirtioTransitional">Virtio transitional devices</a></h4>
<p>
<span class="since">Since 5.2.0</span>, some of QEMU's virtio devices,
when used with PCI/PCIe machine types, accept the following
<code>model</code> values:
</p>
<dl>
<dt><code>virtio-transitional</code></dt>
<dd>This device can work both with virtio 0.9 and virtio 1.0 guest
drivers, so it's the best choice when compatibility with older
guest operating systems is desired. libvirt will plug the device
into a conventional PCI slot.
</dd>
<dt><code>virtio-non-transitional</code></dt>
<dd>This device can only work with virtio 1.0 guest drivers, and it's
the recommended option unless compatibility with older guest
operating systems is necessary. libvirt will plug the device into
either a PCI Express slot or a conventional PCI slot based on the
machine type, resulting in a more optimized PCI topology.
</dd>
<dt><code>virtio</code></dt>
<dd>This device will work like a <code>virtio-non-transitional</code>
device when plugged into a PCI Express slot, and like a
<code>virtio-transitional</code> device otherwise; libvirt will
pick one or the other based on the machine type. This is the best
choice when compatibility with libvirt versions older than 5.2.0
is necessary, but it's otherwise not recommended to use it.
</dd>
</dl>
<p>
While the information outlined above applies to most virtio devices,
there are a few exceptions:
</p>
<ul>
<li>
for SCSI controllers, <code>virtio-scsi</code> must be used instead
of <code>virtio</code> for backwards compatibility reasons;
</li>
<li>
some devices, such as GPUs and input devices (keyboard, tablet and
mouse), are only defined in the virtio 1.0 spec and as such don't
have a transitional variant: the only accepted model is
<code>virtio</code>, which will result in a non-transitional device.
</li>
</ul>
<p>
For more details see the
<a href="https://lists.gnu.org/archive/html/qemu-devel/2018-12/msg00923.html">qemu patch posting</a> and the
<a href="http://docs.oasis-open.org/virtio/virtio/v1.0/virtio-v1.0.html">virtio-1.0 spec</a>.
</p>
<h4><a id="elementsControllers">Controllers</a></h4>
<p>
@@ -4309,7 +4098,6 @@
&lt;driver iothread='4'/&gt;
&lt;address type='pci' domain='0x0000' bus='0x00' slot='0x0b' function='0x0'/&gt;
&lt;/controller&gt;
&lt;controller type='xenbus' maxGrantFrames='64'/&gt;
...
&lt;/devices&gt;
...</pre>
@@ -4333,20 +4121,12 @@
<dd>The <code>virtio-serial</code> controller has two additional
optional attributes <code>ports</code> and <code>vectors</code>,
which control how many devices can be connected through the
controller. <span class="since">Since 5.2.0</span>, it
supports an optional attribute <code>model</code> which can
be 'virtio', 'virtio-transitional', or 'virtio-non-transitional'. See
<a href="#elementsVirtioTransitional">Virtio transitional devices</a>
for more details.
</dd>
controller.</dd>
<dt><code>scsi</code></dt>
<dd>A <code>scsi</code> controller has an optional attribute
<code>model</code>, which is one of 'auto', 'buslogic', 'ibmvscsi',
'lsilogic', 'lsisas1068', 'lsisas1078', 'virtio-scsi',
'vmpvscsi', 'virtio-transitional', 'virtio-non-transitional'. See
<a href="#elementsVirtioTransitional">Virtio transitional devices</a>
for more details.
</dd>
'lsilogic', 'lsisas1068', 'lsisas1078', 'virtio-scsi' or
'vmpvscsi'.</dd>
<dt><code>usb</code></dt>
<dd>A <code>usb</code> controller has an optional attribute
<code>model</code>, which is one of "piix3-uhci", "piix4-uhci",
@@ -4365,11 +4145,6 @@
<dd><span class="since">Since 3.10.0</span> for the vbox driver, the
<code>ide</code> controller has an optional attribute
<code>model</code>, which is one of "piix3", "piix4" or "ich6".</dd>
<dt><code>xenbus</code></dt>
<dd><span class="since">Since 5.2.0</span>, the <code>xenbus</code>
controller has an optional attribute <code>maxGrantFrames</code>,
which specifies the maximum number of grant frames the controller
makes available for connected devices.</dd>
</dl>
<p>
@@ -4512,7 +4287,7 @@
subelement <code>&lt;model&gt;</code> with an attribute
<code>name</code>. The name attribute holds the name of the
specific device that qemu is emulating (e.g. "i82801b11-bridge")
rather than simply the class of device ("pcie-to-pci-bridge",
rather than simply the class of device ("dmi-to-pci-bridge",
"pci-bridge"), which is set in the controller element's
model <b>attribute</b>. In almost all cases, you should not
manually add a <code>&lt;model&gt;</code> subelement to a
@@ -4701,11 +4476,11 @@
...
&lt;devices&gt;
&lt;controller type='pci' index='0' model='pcie-root'/&gt;
&lt;controller type='pci' index='1' model='pcie-root-port'&gt;
&lt;address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x0'/&gt;
&lt;controller type='pci' index='1' model='dmi-to-pci-bridge'&gt;
&lt;address type='pci' domain='0' bus='0' slot='0xe' function='0'/&gt;
&lt;/controller&gt;
&lt;controller type='pci' index='2' model='pcie-to-pci-bridge'&gt;
&lt;address type='pci' domain='0x0000' bus='0x01' slot='0x00' function='0x0'/&gt;
&lt;controller type='pci' index='2' model='pci-bridge'&gt;
&lt;address type='pci' domain='0' bus='1' slot='1' function='0'/&gt;
&lt;/controller&gt;
&lt;/devices&gt;
...</pre>
@@ -4895,12 +4670,7 @@
<dd><span class="since">since 2.5.0</span>For SCSI devices, user
is responsible to make sure the device is not used by host. This
<code>type</code> passes all LUNs presented by a single HBA to
the guest. <span class="since">Since 5.2.0,</span> the
<code>model</code> attribute can be specified further
with "virtio-transitional", "virtio-non-transitional", or
"virtio". See
<a href="#elementsVirtioTransitional">Virtio transitional devices</a>
for more details.
the guest.
</dd>
<dt><code>mdev</code></dt>
<dd>For mediated devices (<span class="since">Since 3.2.0</span>)
@@ -4923,14 +4693,6 @@
<a href="#elementsGraphics">graphical framebuffer</a> in order to
use this attribute, currently only supported with VNC, Spice and
egl-headless graphics devices.
<span class="since">Since version 5.10.0</span>, there is an optional
<code>ramfb</code> attribute for devices with
<code>model='vfio-pci'</code>. Supported values are either
<code>on</code> or <code>off</code> (default is 'off'). When
enabled, this attribute provides a memory framebuffer device to the
guest. This framebuffer will be used as a boot display when a vgpu
device is the primary display.
<p>
Note: There are also some implications on the usage of guest's
address type depending on the <code>model</code> attribute,
@@ -5415,14 +5177,6 @@
information for different classes of network
connections. <span class="since">Since 0.9.4</span>.
</p>
<p>
When a guest is running an interface of type <code>network</code>
may include a <code>portid</code> attribute. This provides the UUID
of an associated virNetworkPortPtr object that records the association
between the domain interface and the network. This attribute is
read-only since port objects are create and deleted automatically
during startup and shutdown. <span class="since">Since 5.1.0</span>
</p>
<p>
Also, similar to <code>direct</code> network connections
(described below), a connection of type <code>network</code> may
@@ -5605,51 +5359,23 @@
<h5><a id="elementsNICSEthernet">Generic ethernet connection</a></h5>
<p>
Provides a means to use a new or existing tap device (or veth
device pair, depening on the needs of the hypervisor driver)
that is partially or wholly setup external to libvirt (either
prior to the guest starting, or while the guest is being started
via an optional script specified in the config).
</p>
<p>
The name of the tap device can optionally be specified with
the <code>dev</code> attribute of the
<code>&lt;target&gt;</code> element. If no target dev is
specified, libvirt will create a new standard tap device with a
name of the pattern "vnetN", where "N" is replaced with a
number. If a target dev is specified and that device doesn't
exist, then a new standard tap device will be created with the
exact dev name given. If the specified target dev does exist,
then that existing device will be used. Usually some basic setup
of the device is done by libvirt, including setting a MAC
address, and the IFF_UP flag, but if the <code>dev</code> is a
pre-existing device, and the <code>managed</code> attribute of
the <code>target</code> element is also set to "no" (the default
value is "yes"), even this basic setup will not be performed -
libvirt will simply pass the device on to the hypervisor with no
setup at all. <span class="since">Since 5.7.0</span> Using
managed='no' with a pre-created tap device is useful because
it permits a virtual machine managed by an unprivileged libvirtd
to have emulated network devices based on tap devices.
</p>
<p>
After creating/opening the tap device, an optional shell script
(given in the <code>path</code> attribute of
the <code>&lt;script&gt;</code> element) will be run; this can
be used to do whatever extra host network integration is
required.
Provides a means for the administrator to execute an arbitrary script
to connect the guest's network to the LAN. The guest will have a tun
device created with a name of vnetN, which can also be overridden with the
&lt;target&gt; element. After creating the tun device a shell script will
be run which is expected to do whatever host network integration is
required. By default this script is called /etc/qemu-ifup but can be
overridden.
</p>
<pre>
...
&lt;devices&gt;
&lt;interface type='ethernet'&gt;
&lt;script path='/etc/qemu-ifup-mynet'/&gt;
&lt;/interface&gt;
&lt;interface type='ethernet'/&gt;
...
&lt;interface type='ethernet'&gt;
&lt;target dev='mytap1' managed='no'/&gt;
&lt;model type='virtio'/&gt;
&lt;target dev='vnet7'/&gt;
&lt;script path='/etc/qemu-ifup-mynet'/&gt;
&lt;/interface&gt;
&lt;/devices&gt;
...</pre>
@@ -5978,11 +5704,7 @@ qemu-kvm -net nic,model=? /dev/null
<p>
Typical values for QEMU and KVM include:
ne2k_isa i82551 i82557b i82559er ne2k_pci pcnet rtl8139 e1000 virtio.
<span class="since">Since 5.2.0</span>, <code>virtio-transitional</code>
and <code>virtio-non-transitional</code> values are supported.
See <a href="#elementsVirtioTransitional">Virtio transitional devices</a>
for more details.
ne2k_isa i82551 i82557b i82559er ne2k_pci pcnet rtl8139 e1000 virtio
</p>
<h5><a id="elementsDriverBackendOptions">Setting NIC driver-specific options</a></h5>
@@ -6692,12 +6414,6 @@ qemu-kvm -net nic,model=? /dev/null
For type <code>passthrough</code>, the mandatory sub-element <code>source</code>
must have an <code>evdev</code> attribute containing the absolute path to the
event device passed through to guests. (KVM only)
<span class="since">Since 5.2.0</span>, the <code>input</code> element
accepts a <code>model</code> attribute which has the values 'virtio',
'virtio-transitional' and 'virtio-non-transitional'. See
<a href="#elementsVirtioTransitional">Virtio transitional devices</a>
for more details.
</p>
<p>
@@ -7091,7 +6807,6 @@ qemu-kvm -net nic,model=? /dev/null
&lt;model type='vga' vram='16384' heads='1'&gt;
&lt;acceleration accel3d='yes' accel2d='yes'/&gt;
&lt;/model&gt;
&lt;driver name='qemu'/&gt;
&lt;/video&gt;
&lt;/devices&gt;
...</pre>
@@ -7125,11 +6840,9 @@ qemu-kvm -net nic,model=? /dev/null
attribute which takes the value "vga", "cirrus", "vmvga", "xen",
"vbox", "qxl" (<span class="since">since 0.8.6</span>),
"virtio" (<span class="since">since 1.3.0</span>),
"gop" (<span class="since">since 3.2.0</span>),
"bochs" (<span class="since">since 5.6.0</span>), "ramfb"
(<span class="since">since 5.9.0</span>), or "none"
(<span class="since">since 4.6.0</span>, depending on the hypervisor
features available.
"gop" (<span class="since">since 3.2.0</span>), or
"none" (<span class="since">since 4.6.0</span>)
depending on the hypervisor features available.
The purpose of the type <code>none</code> is to instruct libvirt not
to add a default video device in the guest (see the paragraph above).
This legacy behaviour can be inconvenient in cases where GPU mediated
@@ -7163,13 +6876,6 @@ qemu-kvm -net nic,model=? /dev/null
Attribute <code>vram64</code> (<span class="since">since 1.3.3</span>)
extends secondary bar and makes it addressable as 64bit memory.
</p>
<p><span class="since">Since 5.9.0</span>, the <code>model</code>
element may also have an optional <code>resolution</code> sub-element.
The <code>resolution</code> element has attributes <code>x</code> and
<code>y</code> to set the minimum resolution for the video device. This
sub-element is valid for model types "vga", "qxl", "bochs", and
"virtio".
</p>
</dd>
<dt><code>acceleration</code></dt>
@@ -7184,12 +6890,6 @@ qemu-kvm -net nic,model=? /dev/null
<dd>Enable 3D acceleration (for vbox driver
<span class="since">since 0.7.1</span>, qemu driver
<span class="since">since 1.3.0</span>)</dd>
<dt><code>rendernode</code></dt>
<dd>Absolute path to a host's DRI device to be used for
rendering (for 'vhostuser' driver only, <span
class="since">since 5.8.0</span>). If none is specified,
libvirt will pick one available.</dd>
</dl>
</dd>
@@ -7206,16 +6906,7 @@ qemu-kvm -net nic,model=? /dev/null
<dd>
The subelement <code>driver</code> can be used to tune the device:
<dl>
<dt><code>name</code></dt>
<dd>
Specify the backend driver to use, either "qemu" or
"vhostuser" depending on the hypervisor features available
(<span class="since">since 5.8.0</span>). "qemu" is the
default QEMU backend. "vhostuser" will use a separate
vhost-user process backend (for <code>virtio</code>
device).
</dd>
<dt>virtio options</dt>
<dt>virtio options</dt>
<dd>
<a href="#elementsVirtio">Virtio-specific options</a> can also be
set (<span class="since">Since 3.5.0</span>)
@@ -8194,12 +7885,8 @@ qemu-kvm -net nic,model=? /dev/null
</p>
<ul>
<li>'virtio' - default with QEMU/KVM</li>
<li>'virtio-transitional' <span class="since">Since 5.2.0</span></li>
<li>'virtio-non-transitional' <span class="since">Since 5.2.0</span></li>
<li>'xen' - default with Xen</li>
</ul>
See <a href="#elementsVirtioTransitional">Virtio transitional devices</a>
for more details.
</dd>
<dt><code>autodeflate</code></dt>
<dd>
@@ -8271,11 +7958,7 @@ qemu-kvm -net nic,model=? /dev/null
</p>
<ul>
<li>'virtio' - supported by qemu and virtio-rng kernel module</li>
<li>'virtio-transitional' <span class='since'>Since 5.2.0</span></li>
<li>'virtio-non-transitional' <span class='since'>Since 5.2.0</span></li>
</ul>
See <a href="#elementsVirtioTransitional">Virtio transitional devices</a>
for more details.
</dd>
<dt><code>rate</code></dt>
<dd>
@@ -8371,9 +8054,6 @@ qemu-kvm -net nic,model=? /dev/null
TPM functionality for each VM. QEMU talks to it over a Unix socket. With
the emulator device type each guest gets its own private TPM.
<span class="since">'emulator' since 4.5.0</span>
The state of the TPM emulator can be encrypted by providing an
<code>encryption</code> element.
<span class="since">'encryption' since 5.6.0</span>
</p>
<p>
Example: usage of the TPM Emulator
@@ -8383,7 +8063,6 @@ qemu-kvm -net nic,model=? /dev/null
&lt;devices&gt;
&lt;tpm model='tpm-tis'&gt;
&lt;backend type='emulator' version='2.0'&gt;
&lt;encryption secret='6dd3e4a5-1d76-44ce-961f-f119f5aad935'/&gt;
&lt;/backend&gt;
&lt;/tpm&gt;
&lt;/devices&gt;
@@ -8446,14 +8125,6 @@ qemu-kvm -net nic,model=? /dev/null
<li>'2.0' : creates a TPM 2.0</li>
</ul>
</dd>
<dt><code>encryption</code></dt>
<dd>
<p>
The <code>encryption</code> element allows the state of a TPM emulator
to be encrypted. The <code>secret</code> must reference a secret object
that holds the passphrase from which the encryption key will be derived.
</p>
</dd>
</dl>
<h4><a id="elementsNVRAM">NVRAM device</a></h4>
@@ -8470,7 +8141,7 @@ qemu-kvm -net nic,model=? /dev/null
...
&lt;devices&gt;
&lt;nvram&gt;
&lt;address type='spapr-vio' reg='0x00003000'/&gt;
&lt;address type='spapr-vio' reg='0x3000'/&gt;
&lt;/nvram&gt;
&lt;/devices&gt;
...
@@ -8651,6 +8322,7 @@ qemu-kvm -net nic,model=? /dev/null
&lt;memory model='nvdimm'&gt;
&lt;source&gt;
&lt;path&gt;/tmp/nvdimm&lt;/path&gt;
&lt;alignsize unit='KiB'&gt;2048&lt;/alignsize&gt;
&lt;/source&gt;
&lt;target&gt;
&lt;size unit='KiB'&gt;524288&lt;/size&gt;
@@ -8661,10 +8333,9 @@ qemu-kvm -net nic,model=? /dev/null
&lt;readonly/&gt;
&lt;/target&gt;
&lt;/memory&gt;
&lt;memory model='nvdimm' access='shared'&gt;
&lt;memory model='nvdimm'&gt;
&lt;source&gt;
&lt;path&gt;/dev/dax0.0&lt;/path&gt;
&lt;alignsize unit='KiB'&gt;2048&lt;/alignsize&gt;
&lt;pmem/&gt;
&lt;/source&gt;
&lt;target&gt;
@@ -8698,8 +8369,6 @@ qemu-kvm -net nic,model=? /dev/null
module basis. Values are the same as
<a href="#elementsMemoryBacking">Memory Backing</a>:
<code>shared</code> and <code>private</code>.
For <code>nvdimm</code> model, if using real NVDIMM DAX device as
backend, <code>shared</code> is required.
</p>
</dd>
@@ -8763,8 +8432,7 @@ qemu-kvm -net nic,model=? /dev/null
alignment used to mmap the address range for the backend
<code>path</code>. If not supplied the host page size is used.
For example, to mmap a real NVDIMM device a 2M-aligned page may
be required, and host page size is 4KB, then we need to set this
element to 2MB.
be required.
<span class="since">Since 5.0.0</span>
</p>
</dd>
@@ -8857,17 +8525,14 @@ qemu-kvm -net nic,model=? /dev/null
<dt><code>model</code></dt>
<dd>
<p>
Supported values are <code>intel</code> (for Q35 guests) and,
<span class="since">since 5.5.0</span>, <code>smmuv3</code> (for
ARM virt guests).
Currently only the <code>intel</code> model is supported.
</p>
</dd>
<dt><code>driver</code></dt>
<dd>
<p>
The <code>driver</code> subelement can be used to configure
additional options, some of which might only be available for
certain IOMMU models:
additional options:
</p>
<dl>
<dt><code>intremap</code></dt>
@@ -8920,11 +8585,7 @@ qemu-kvm -net nic,model=? /dev/null
<h3><a id="vsock">Vsock</a></h3>
<p>A vsock host/guest interface. The <code>model</code> attribute
defaults to <code>virtio</code>. <span class="since">Since 5.2.0</span>
<code>model</code> can also be 'virtio-transitional' and
'virtio-non-transitional', see
<a href="#elementsVirtioTransitional">Virtio transitional devices</a>
for more details.
defaults to <code>virtio</code>.
The optional attribute <code>address</code> of the <code>cid</code>
element specifies the CID assigned to the guest. If the attribute
<code>auto</code> is set to <code>yes</code>, libvirt
@@ -9011,8 +8672,7 @@ qemu-kvm -net nic,model=? /dev/null
</dd>
<dt><code>model</code></dt>
<dd>A valid security model name, matching the currently
activated security model. Model <code>dac</code> is not available
when guest is run by unprivileged user.
activated security model
</dd>
<dt><code>relabel</code></dt>
<dd>Either <code>yes</code> or <code>no</code>. This must always
@@ -9110,7 +8770,7 @@ qemu-kvm -net nic,model=? /dev/null
<p>Note: DEA/TDEA is synonymous with DES/TDES.</p>
<h3><a id="launchSecurity">Launch Security</a></h3>
<h3><a id="sev">Launch Security</a></h3>
<p>
The contents of the <code>&lt;launchSecurity type='sev'&gt;</code> element
@@ -9125,8 +8785,8 @@ qemu-kvm -net nic,model=? /dev/null
different entity using a different key the encrypted guests data will
be incorrectly decrypted, leading to unintelligible data.
For more information see various input parameters and its format see the
<a href="https://support.amd.com/TechDocs/55766_SEV-KM_API_Specification.pdf">SEV API spec</a>
For more information see various input parameters and its format see the SEV API spec
<a href="https://support.amd.com/TechDocs/55766_SEV-KM%20API_Specification.pdf"> https://support.amd.com/TechDocs/55766_SEV-KM%20API_Specification.pdf </a>
<span class="since">Since 4.4.0</span>
</p>
<pre>

View File

@@ -37,17 +37,6 @@
management application to choose an appropriate mode for a pass-through
host device as well as which adapter to utilize.</p>
<p>Some XML elements may be entirely omitted from the domaincapabilities
XML, depending on what the libvirt driver has filled in. Applications
should only act on what is explicitly reported in the domaincapabilities
XML. For example, if &lt;disk supported='yes'/&gt; is present, you can safely
assume the driver supports &lt;disk&gt; devices. If &lt;disk supported='no'/&gt; is
present, you can safely assume the driver does NOT support &lt;disk&gt;
devices. If the &lt;disk&gt; block is omitted entirely, the driver is not
indicating one way or the other whether it supports &lt;disk&gt; devices, and
applications should not interpret the missing block to mean any thing in
particular.</p>
<h2><a id="elements">Element and attribute overview</a></h2>
<p> A new query interface was added to the virConnect API's to retrieve the
@@ -119,10 +108,6 @@
&lt;domainCapabilities&gt;
...
&lt;os supported='yes'&gt;
&lt;enum name='firmware'&gt;
&lt;value&gt;bios&lt;/value&gt;
&lt;value&gt;efi&lt;/value&gt;
&lt;/enum&gt;
&lt;loader supported='yes'&gt;
&lt;value&gt;/usr/share/OVMF/OVMF_CODE.fd&lt;/value&gt;
&lt;enum name='type'&gt;
@@ -133,61 +118,29 @@
&lt;value&gt;yes&lt;/value&gt;
&lt;value&gt;no&lt;/value&gt;
&lt;/enum&gt;
&lt;enum name='secure'&gt;
&lt;value&gt;yes&lt;/value&gt;
&lt;value&gt;no&lt;/value&gt;
&lt;/enum&gt;
&lt;/loader&gt;
&lt;/os&gt;
...
&lt;domainCapabilities&gt;
</pre>
<p>The <code>firmware</code> enum corresponds to the
<code>firmware</code> attribute of the <code>os</code> element in
the domain XML. The presence of this enum means libvirt is capable
of the so-called firmware auto-selection feature. And the listed
firmware values represent the accepted input in the domain
XML. Note that the <code>firmware</code> enum reports only those
values for which a firmware "descriptor file" exists on the host.
Firmware descriptor file is a small JSON document that describes
details about a given BIOS or UEFI binary on the host, e.g. the
fimware binary path, its architecture, supported machine types,
NVRAM template, etc. This ensures that the reported values won't
cause a failure on guest boot.
</p>
<p>For the <code>loader</code> element, the following can occur:</p>
<dl>
<dt><code>value</code></dt>
<dd>List of known firmware binary paths. Currently this is used
only to advertise the known location of OVMF binaries for
QEMU. OVMF binaries will only be listed if they actually exist on
host.</dd>
<dd>List of known loader paths. Currently this is only used
to advertise known locations of OVMF binaries for qemu. Binaries
will only be listed if they actually exist on disk.</dd>
<dt><code>type</code></dt>
<dd>Whether the boot loader is a typical BIOS (<code>rom</code>)
or a UEFI firmware (<code>pflash</code>). Each <code>value</code>
sub-element under the <code>type</code> enum represents a possible
value for the <code>type</code> attribute for the &lt;loader/&gt;
element in the domain XML. E.g. the presence
of <code>pfalsh</code> under the <code>type</code> enum means that
a domain XML can use UEFI firmware via: &lt;loader/&gt;
type="pflash" ...&gt;/path/to/the/firmware/binary/&lt;/loader&gt;.
</dd>
<dd>Whether loader is a typical BIOS (<code>rom</code>) or
an UEFI binary (<code>pflash</code>). This refers to
<code>type</code> attribute of the &lt;loader/&gt;
element.</dd>
<dt><code>readonly</code></dt>
<dd>Options for the <code>readonly</code> attribute of the
&lt;loader/&gt; element in the domain XML.</dd>
<dt><code>secure</code></dt>
<dd>Options for the <code>secure</code> attribute of the
&lt;loader/&gt; element in the domain XML. Note that the
value <code>yes</code> is listed only if libvirt detects a
firmware descriptor file that has path to an OVMF binary that
supports Secure boot, and lists its architecture and supported
machine type.</dd>
&lt;loader/&gt; element.</dd>
</dl>
<h3><a id="elementsCPU">CPU configuration</a></h3>
@@ -463,41 +416,6 @@
element.</dd>
</dl>
<h4><a id="elementsRNG">RNG device</a></h4>
<p>RNG device capabilities are exposed under the
<code>rng</code> element. For instance:</p>
<pre>
&lt;domainCapabilities&gt;
...
&lt;devices&gt;
&lt;rng supported='yes'&gt;
&lt;enum name='model'&gt;
&lt;value&gt;virtio&lt;/value&gt;
&lt;value&gt;virtio-transitional&lt;/value&gt;
&lt;value&gt;virtio-non-transitional&lt;/value&gt;
&lt;/enum&gt;
&lt;enum name='backendModel'&gt;
&lt;value&gt;random&lt;/value&gt;
&lt;value&gt;egd&lt;/value&gt;
&lt;/enum&gt;
&lt;/rng&gt;
...
&lt;/devices&gt;
&lt;/domainCapabilities&gt;
</pre>
<dl>
<dt><code>model</code></dt>
<dd>Options for the <code>model</code> attribute of the
&lt;rng&gt; element.</dd>
<dt><code>backendModel</code></dt>
<dd>Options for the <code>model</code> attribute of the
&lt;rng&gt;&lt;backend&gt; element.</dd>
</dl>
<h3><a id="elementsFeatures">Features</a></h3>
<p>One more set of XML elements describe the supported features and
@@ -516,8 +434,6 @@
&lt;/gic&gt;
&lt;vmcoreinfo supported='yes'/&gt;
&lt;genid supported='yes'/&gt;
&lt;backingStoreInput supported='yes'/&gt;
&lt;backup supported='yes'/&gt;
&lt;sev&gt;
&lt;cbitpos&gt;47&lt;/cbitpos&gt;
&lt;reduced-phys-bits&gt;1&lt;/reduced-phys-bits&gt;
@@ -554,20 +470,6 @@
<p>Reports whether the genid feature can be used by the domain.</p>
<h4><a id="featureBackingStoreInput">backingStoreInput</a></h4>
<p>Reports whether the hypervisor will obey the &lt;backingStore&gt;
elements configured for a &lt;disk&gt; when booting the guest, hotplugging
the disk to a running guest, or similar.
</p>
<h4><a id="featureBackup">backup</a></h4>
<p>Reports whether the hypervisor supports the backup, checkpoint, and
related features. (<code>virDomainBackupBegin</code>,
<code>virDomainCheckpointCreateXML</code> etc).
</p>
<h4><a id="elementsSEV">SEV capabilities</a></h4>
<p>AMD Secure Encrypted Virtualization (SEV) capabilities are exposed under
@@ -578,9 +480,10 @@
encrypted with a key unique to that VM.</p>
<p>
For more details on the SEV feature, please follow resources in the
AMD developer's document store. In order to use SEV with libvirt have
a look at <a href="formatdomain.html#launchSecurity">SEV in domain XML</a>
For more details on SEV feature see:
<a href="https://support.amd.com/TechDocs/55766_SEV-KM%20API_Specification.pdf">
SEV API spec</a> and <a href="http://amd-dev.wpengine.netdna-cdn.com/wordpress/media/2013/12/AMD_Memory_Encryption_Whitepaper_v7-Public.pdf">
SEV White Paper</a>
</p>
<dl>

View File

@@ -107,13 +107,13 @@
may also be connected to the LAN. When defining
a new network with a <code>&lt;forward&gt;</code> mode of
"nat", "route", or "open" (or an isolated network with
"nat" or "route" (or an isolated network with
no <code>&lt;forward&gt;</code> element), libvirt will
automatically generate a unique name for the bridge device if
none is given, and this name will be permanently stored in the
network configuration so that that the same name will be used
every time the network is started. For these types of networks
(nat, route, open, and isolated), a bridge name beginning with the
(nat, routed, and isolated), a bridge name beginning with the
prefix "virbr" is recommended (and that is what is
auto-generated), but not enforced.
Attribute <code>stp</code> specifies if Spanning Tree Protocol
@@ -152,23 +152,6 @@
<span class="since">Since 1.2.11, requires kernel 3.17 or
newer</span>
</p>
<p>
The optional <code>zone</code> attribute of
the <code>bridge</code> element is used to specify
the <a href="https://firewalld.org">firewalld</a>
zone for the bridge of a network with <code>forward</code>
mode of "nat", "route", "open", or one with
no <code>forward</code> specified. By default, the bridges
of all virtual networks with these forward modes are placed
in the firewalld zone named "libvirt", which permits
incoming DNS, DHCP, TFTP, and SSH to the host from guests on
the network. This behavior can be changed either by
modifying the libvirt zone (using firewalld management
tools), or by placing the network in a different zone (which
will also be managed using firewalld tools).
<span class="since">Since 5.1.0</span>
</p>
</dd>
<dt><code>mtu</code></dt>
@@ -1096,28 +1079,6 @@
</dd>
</dl>
<h3><a id="elementsNamespaces">Network namespaces</a></h3>
<p>
A special XML namespace is available for passing options directly to the
underlying dnsmasq configuration file. Usage of XML namespaces comes with no
support guarantees, so use at your own risk.
</p>
<p>
This example XML will pass the option strings <code>foo=bar</code> and
<code>cname=*.foo.example.com,master.example.com</code> directly to the
underlying dnsmasq instance.
<pre>
&lt;network xmlns:dnsmasq='http://libvirt.org/schemas/network/dnsmasq/1.0'&gt;
...
&lt;dnsmasq:options&gt;
&lt;dnsmasq:option value="foo=bar"/&gt;
&lt;dnsmasq:option value="cname=*.foo.example.com,master.example.com"/&gt;
&lt;/dnsmasq:options&gt;
&lt;/network&gt;</pre>
</p>
<h2><a id="examples">Example configuration</a></h2>
<h3><a id="examplesNAT">NAT based network</a></h3>

View File

@@ -1,212 +0,0 @@
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<body>
<h1>Network XML format</h1>
<ul id="toc">
</ul>
<p>
This page provides an introduction to the network port XML format.
This stores information about the connection between a virtual
interface of a virtual domain, and the virtual network it is
attached to.
</p>
<h2><a id="elements">Element and attribute overview</a></h2>
<p>
The root element required for all virtual network ports is
named <code>networkport</code> and has no configurable attributes
The network port XML format is available <span class="since">since
5.5.0</span>
</p>
<h3><a id="elementsMetadata">General metadata</a></h3>
<p>
The first elements provide basic metadata about the virtual
network port.
</p>
<pre>
&lt;networkport
&lt;uuid&gt;7ae63b5f-fe96-4af0-a7c3-da04ba1b3f54&lt;/uuid&gt;
&lt;owner&gt;
&lt;uuid&gt;06578fc1-c686-46fa-bc2c-220893b466a6&lt;/uuid&gt;
&lt;name&gt;myguest&lt;name&gt;
&lt;/owner&gt;
&lt;group&gt;webfront&lt;group&gt;
&lt;mac address='52:54:0:7b:35:93'/&gt;
...</pre>
<dl>
<dt><code>uuid</code></dt>
<dd>The content of the <code>uuid</code> element provides
a globally unique identifier for the virtual network port.
The format must be RFC 4122 compliant, eg <code>3e3fce45-4f53-4fa7-bb32-11f34168b82b</code>.
If omitted when defining/creating a new network port, a random
UUID is generated.</dd>
<dd>The <code>owner</code> node records the domain object that
is the owner of the network port. It contains two child nodes:
<dl>
<dt><code>uuid</code></dt>
<dd>The content of the <code>uuid</code> element provides
a globally unique identifier for the virtual domain.</dd>
<dt><code>name</code></dt>
<dd>The unique name of the virtual domain</dd>
</dl>
</dd>
<dt><code>group</code></dt>
<dd>The port group in the virtual network to which the
port belongs. Can be omitted if no port groups are
defined on the network.</dd>
<dt><code>mac</code></dt>
<dd>The <code>address</code> attribute provides the MAC
address of the virtual port that will be see by the
guest. The MAC address must not start with 0xFE as this
byte is reserved for use on the host side of the port.
</dd>
</dl>
<h3><a id="elementsCommon">Common elements</a></h3>
<p>
The following elements are common to one or more of the plug
types listed later
</p>
<pre>
...
&lt;bandwidth&gt;
&lt;inbound average='1000' peak='5000' floor='200' burst='1024'/&gt;
&lt;outbound average='128' peak='256' burst='256'/&gt;
&lt;/bandwidth&gt;
&lt;rxfilters trustGuest='yes'/&gt;
&lt;virtualport type='802.1Qbg'&gt;
&lt;parameters managerid='11' typeid='1193047' typeidversion='2'/&gt;
&lt;/virtualport&gt;
...</pre>
<dl>
<dt><code>bandwidth</code></dt>
<dd>This part of the network port XML provides setting quality of service.
Incoming and outgoing traffic can be shaped independently.
The <code>bandwidth</code> element and its child elements are described
in the <a href="formatnetwork.html#elementQoS">QoS</a> section of
the Network XML. In addition the <code>classID</code> attribute may
exist to provide the ID of the traffic shaping class that is active.
</dd>
<dt><code>rxfilters</code></dt>
<dd>The <code>rxfilters</code> element property
<code>trustGuest</code> provides the
capability for the host to detect and trust reports from the
guest regarding changes to the interface mac address and receive
filters by setting the attribute to <code>yes</code>. The default
setting for the attribute is <code>no</code> for security
reasons and support depends on the guest network device model as
well as the type of connection on the host - currently it is
only supported for the virtio device model and for macvtap
connections on the host.
</dd>
<dt><code>virtualport</code></dt>
<dd>The <code>virtualport</code> element describes metadata that
needs to be provided to the underlying network subsystem. It
is described in the domain XML
<a href="formatdomain.html#elementsNICS">interface documentation</a>.
</dd>
</dl>
<h3><a id="elementsPlug">Plugs</a></h3>
<p>
The <code>plug</code> element has varying content depending
on the value of the <code>type</code> attribute.
</p>
<h4><a id="elementsPlugNetwork">Network</a></h4>
<p>
The <code>network</code> plug type refers to a managed virtual
network plug that is based on a traditional software bridge
device privately managed by libvirt.
</p>
<pre>
...
&lt;plug type='network' bridge='virbr0'/&gt;
...</pre>
<p>
The <code>bridge</code> attribute provides the name of the
privately managed bridge device associated with the virtual
network.
</p>
<h4><a id="elementsPlugNetwork">Bridge</a></h4>
<p>
The <code>bridge</code> plug type refers to an externally
managed traditional software bridge.
</p>
<pre>
...
&lt;plug type='bridge' bridge='br2'/&gt;
...</pre>
<p>
The <code>bridge</code> attribute provides the name of the
externally managed bridge device associated with the virtual
network.
</p>
<h4><a id="elementsPlugNetwork">Direct</a></h4>
<p>
The <code>direct</code> plug type refers to a connection
directly to a physical network interface.
</p>
<pre>
...
&lt;plug type='direct' dev='ens3' mode='vepa'/&gt;
...</pre>
<p>
The <code>dev</code> attribute provides the name of the
physical network interface to which the port will be
connected. The <code>mode</code> attribute describes
how the connection will be setup and takes the same
values described in the
<a href="formatdomain.html#elementsNICSDirect">domain XML</a>.
</p>
<h4><a id="elementsPlugNetwork">Host PCI</a></h4>
<p>
The <code>hostdev-pci</code> plug type refers to the
passthrough of a physical PCI device rather than emulation.
</p>
<pre>
...
&lt;plug type='hostdev-pci' managed='yes'&gt;
&lt;driver name='vfio'/&gt;
&lt;address domain='0x0001' bus='0x02' slot='0x03' function='0x4'/&gt;
&lt;/plug&gt;
...</pre>
<p>
The <code>managed</code> attribute indicates who is responsible for
managing the PCI device in the host. When set to the value <code>yes</code>
libvirt is responsible for automatically detaching the device from host
drivers and resetting it if needed. If the value is <code>no</code>,
some other party must ensure the device is not attached to any
host drivers.
</p>
</body>
</html>

View File

@@ -70,10 +70,6 @@
<dd>Describes a device on the host's PCI bus. Sub-elements
include:
<dl>
<dt><code>class</code></dt>
<dd>Optional element for combined class, subclass and
programming interface codes as 6-digit hexadecimal number.
<span class="since">Since 5.2.0</span></dd>
<dt><code>domain</code></dt>
<dd>Which domain the device belongs to.</dd>
<dt><code>bus</code></dt>
@@ -385,7 +381,6 @@
&lt;name&gt;igb&lt;/name&gt;
&lt;/driver&gt;
&lt;capability type='pci'&gt;
&lt;class&gt;0x020000&lt;/class&gt;
&lt;domain&gt;0&lt;/domain&gt;
&lt;bus&gt;2&lt;/bus&gt;
&lt;slot&gt;0&lt;/slot&gt;

View File

@@ -42,8 +42,8 @@
Specifies what this secret is used for. A mandatory
<code>type</code> attribute specifies the usage category, currently
only <code>volume</code>, <code>ceph</code>, <code>iscsi</code>,
<code>tls</code>, and <code>vtpm</code> are defined. Specific usage
categories are described below.
and <code>tls</code> are defined. Specific usage categories
are described below.
</dd>
</dl>
@@ -322,63 +322,6 @@ Secret 718c71bd-67b5-4a2b-87ec-a24e8ca200dc created
<pre>
# MYSECRET=`printf %s "letmein" | base64`
# virsh secret-set-value 718c71bd-67b5-4a2b-87ec-a24e8ca200dc $MYSECRET
Secret value set
</pre>
<h3><a id="vTPMUsageType">Usage type "vtpm"</a></h3>
<p>
This secret is associated with a virtualized TPM (vTPM) and serves
as a passphrase for deriving a key from for encrypting the state
of the vTPM.
The <code>&lt;usage type='vtpm'&gt;</code> element must contain
a single <code>name</code> element that specifies a usage name
for the secret. The vTPM secret can then be used by UUID
via the <code>&lt;encryption&gt;</code> element of
a <a href="formatdomain.html#elementsTpm">tpm</a> when using an
emulator.
<span class="since">Since 5.6.0</span>. The following is an example
of the steps to be taken. First create a vtpm-secret.xml file: </p>
<pre>
# cat vtpm-secret.xml
&lt;secret ephemeral='no' private='yes'&gt;
&lt;description&gt;sample vTPM secret&lt;/description&gt;
&lt;usage type='vtpm'&gt;
&lt;name&gt;VTPM_example&lt;/name&gt;
&lt;/usage&gt;
&lt;/secret&gt;
# virsh secret-define vtpm-secret.xml
Secret 6dd3e4a5-1d76-44ce-961f-f119f5aad935 created
# virsh secret-list
UUID Usage
----------------------------------------------------------------------------------------
6dd3e4a5-1d76-44ce-961f-f119f5aad935 vtpm VTPM_example
#
</pre>
<p>
A secret may also be defined via the
<a href="html/libvirt-libvirt-secret.html#virSecretDefineXML">
<code>virSecretDefineXML</code></a> API.
Once the secret is defined, a secret value will need to be set. The
secret would be the passphrase used to decrypt the vTPM state.
The following is a simple example of using
<code>virsh secret-set-value</code> to set the secret value. The
<a href="html/libvirt-libvirt-secret.html#virSecretSetValue">
<code>virSecretSetValue</code></a> API may also be used to set
a more secure secret without using printable/readable characters.
</p>
<pre>
# MYSECRET=`printf %s "open sesame" | base64`
# virsh secret-set-value 6dd3e4a5-1d76-44ce-961f-f119f5aad935 $MYSECRET
Secret value set
</pre>

View File

@@ -9,9 +9,7 @@
<h2><a id="SnapshotAttributes">Snapshot XML</a></h2>
<p>
Snapshots are one form
of <a href="kbase/domainstatecapture.html">domain state
capture</a>. There are several types of snapshots:
There are several types of snapshots:
</p>
<dl>
<dt>disk snapshot</dt>
@@ -35,7 +33,7 @@
resume in a consistent state; but if the disks are modified
externally in the meantime, this is likely to lead to data
corruption.</dd>
<dt>full system</dt>
<dt>system checkpoint</dt>
<dd>A combination of disk snapshots for all disks as well as VM
memory state, which can be used to resume the guest from where it
left off with symptoms similar to hibernation (that is, TCP
@@ -57,12 +55,11 @@
as <code>virDomainSaveImageGetXMLDesc()</code> to work with
those files.
</p>
<p>Full system snapshots are created
by <code>virDomainSnapshotCreateXML()</code> with no flags, while
<p>System checkpoints are created
by <code>virDomainSnapshotCreateXML()</code> with no flags, and
disk snapshots are created by the same function with
the <code>VIR_DOMAIN_SNAPSHOT_CREATE_DISK_ONLY</code>
flag. Regardless of the flags provided, restoration of the
snapshot is handled by
the <code>VIR_DOMAIN_SNAPSHOT_CREATE_DISK_ONLY</code> flag; in
both cases, they are restored by
the <code>virDomainRevertToSnapshot()</code> function. For
these types of snapshots, libvirt tracks each snapshot as a
separate <code>virDomainSnapshotPtr</code> object, and maintains
@@ -81,8 +78,7 @@
redefining a snapshot (<span class="since">since 0.9.5</span>),
with the <code>VIR_DOMAIN_SNAPSHOT_CREATE_REDEFINE</code> flag
of <code>virDomainSnapshotCreateXML()</code>, all of the XML
described here is relevant on input, even the fields that are
normally described as readonly for output.
described here is relevant.
</p>
<p>
Snapshots are maintained in a hierarchy. A domain can have a
@@ -93,9 +89,7 @@
sets that snapshot as current, and the prior current snapshot is
the parent of the new snapshot. Branches in the hierarchy can
be formed by reverting to a snapshot with a child, then creating
another snapshot. For now, the creation of external snapshots
when checkpoints exist is forbidden, although future work will
make it possible to integrate these two concepts.
another snapshot.
</p>
<p>
The top-level <code>domainsnapshot</code> element may contain
@@ -103,14 +97,16 @@
</p>
<dl>
<dt><code>name</code></dt>
<dd>The optional name for this snapshot. If the name is
omitted, libvirt will create a name based on the time of the
creation.
<dd>The name for this snapshot. If the name is specified when
initially creating the snapshot, then the snapshot will have
that particular name. If the name is omitted when initially
creating the snapshot, then libvirt will make up a name for
the snapshot, based on the time when it was created.
</dd>
<dt><code>description</code></dt>
<dd>An optional human-readable description of the snapshot. If
the description is omitted when initially creating the
snapshot, then this field will be empty.
<dd>A human-readable description of the snapshot. If the
description is omitted when initially creating the snapshot,
then this field will be empty.
</dd>
<dt><code>memory</code></dt>
<dd>On input, this is an optional request for how to handle VM
@@ -132,10 +128,13 @@
what file name is created in an external snapshot. On output,
this is fully populated to show the state of each disk in the
snapshot, including any properties that were generated by the
hypervisor defaults. For full system snapshots, this field is
ignored on input and omitted on output (a full system snapshot
implies that all disks participate in the snapshot process).
This element has a list of <code>disk</code>
hypervisor defaults. For system checkpoints, this field is
ignored on input and omitted on output (a system checkpoint
implies that all disks participate in the snapshot process,
and since the current implementation only does internal system
checkpoints, there are no extra details to add); a future
release may allow the use of <code>disks</code> with a system
checkpoint. This element has a list of <code>disk</code>
sub-elements, describing anywhere from zero to all of the
disks associated with the domain. <span class="since">Since
0.9.5</span>
@@ -144,8 +143,8 @@
<dd>This sub-element describes the snapshot properties of a
specific disk. The attribute <code>name</code> is
mandatory, and must match either the <code>&lt;target
dev='name'/&gt;</code> (recommended) or an unambiguous
<code>&lt;source file='name'/&gt;</code> of one of
dev='name'/&gt;</code> or an unambiguous <code>&lt;source
file='name'/&gt;</code> of one of
the <a href="formatdomain.html#elementsDisks">disk
devices</a> specified for the domain at the time of the
snapshot. The attribute <code>snapshot</code> is
@@ -174,12 +173,6 @@
snapshots, the original file name becomes the read-only
snapshot, and the new file name contains the read-write
delta of all disk changes since the snapshot.
<p/>
The <code>source</code> element also may contain the
<code>seclabel</code> element (described in the
<a href="formatdomain.html#seclabel">domain XML documentation</a>)
which can be used to override the domain security labeling policy
for <code>source</code>.
</dd>
<dt><code>driver</code></dt>
<dd>An optional sub-element <code>driver</code>,
@@ -187,7 +180,6 @@
as qcow2), of the new file created by the external
snapshot of the new file.
</dd>
<dt><code>seclabel</code></dt>
</dl>
<span class="since">Since 1.2.2</span> the <code>disk</code> element
@@ -209,50 +201,45 @@
</dl>
</dd>
<dt><code>creationTime</code></dt>
<dd>A readonly representation of the time this snapshot was
created. The time is specified in seconds since the Epoch,
UTC (i.e. Unix time).
<dd>The time this snapshot was created. The time is specified
in seconds since the Epoch, UTC (i.e. Unix time). Readonly.
</dd>
<dt><code>state</code></dt>
<dd>A readonly representation of the state of the domain at the
time this snapshot was taken. If a full system snapshot was
created, then this is the state of the domain at that
time. When the domain is reverted to this snapshot, the
domain's state will default to this state, unless overridden
by <code>virDomainRevertToSnapshot()</code> flags to revert to
a running or paused state. Additionally, this field can be the
value "disk-snapshot" (<span class="since">since 0.9.5</span>)
when it represents only a disk snapshot (no VM memory state),
and reverting to this snapshot will default to an inactive
guest.
<dd>The state of the domain at the time this snapshot was taken.
If the snapshot was created as a system checkpoint, then this
is the state of the domain at that time; when the domain is
reverted to this snapshot, the domain's state will default to
whatever is in this field unless additional flags are passed
to <code>virDomainRevertToSnapshot()</code>. Additionally,
this field can be the value "disk-snapshot"
(<span class="since">since 0.9.5</span>) when it represents
only a disk snapshot (no VM memory state), and reverting to this
snapshot will default to an inactive guest. Readonly.
</dd>
<dt><code>parent</code></dt>
<dd>Readonly, present only if this snapshot has a parent. The
parent name is given by the sub-element <code>name</code>. The
parent relationship allows tracking a tree of related snapshots.
<dd>The parent of this snapshot. If present, this element
contains exactly one child element, name. This specifies the
name of the parent snapshot of this snapshot, and is used to
represent trees of snapshots. Readonly.
</dd>
<dt><code>domain</code></dt>
<dd>A readonly representation of the domain that this snapshot
was taken against. Older versions of libvirt stored only a
single child element, uuid; reverting to a snapshot like this
is risky if the current state of the domain differs from the
state that the domain was created in, and requires the use of
the <code>VIR_DOMAIN_SNAPSHOT_REVERT_FORCE</code> flag
<dd>The domain that this snapshot was taken against. Older
versions of libvirt stored only a single child element, uuid;
reverting to a snapshot like this is risky if the current
state of the domain differs from the state that the domain was
created in, and requires the use of the
<code>VIR_DOMAIN_SNAPSHOT_REVERT_FORCE</code> flag
in <code>virDomainRevertToSnapshot()</code>. Newer versions
of libvirt (<span class="since">since 0.9.5</span>) store the
entire inactive <a href="formatdomain.html">domain
configuration</a> at the time of the snapshot
(<span class="since">since 0.9.5</span>). The domain will have
security-sensitive information omitted
unless the flag <code>VIR_DOMAIN_SNAPSHOT_XML_SECURE</code> is
provided on a read-write connection.
of libvirt (<span class="since">since 0.9.5</span>) store the entire
inactive <a href="formatdomain.html">domain configuration</a>
at the time of the snapshot (<span class="since">since
0.9.5</span>). Readonly.
</dd>
<dt><code>cookie</code></dt>
<dd>An optional readonly representation of a save image cookie
containing additional data libvirt may need to properly
restore a domain from an active snapshot when such data cannot
be stored directly in the <code>domain</code> to maintain
compatibility with older libvirt or hypervisor.
<dd>Save image cookie containing additional data libvirt may need to
properly restore a domain from an active snapshot when such data
cannot be stored directly in the <code>domain</code> to maintain
compatibility with older libvirt or hypervisor. Readonly.
</dd>
</dl>
@@ -264,15 +251,10 @@
&lt;domainsnapshot&gt;
&lt;description&gt;Snapshot of OS install and updates&lt;/description&gt;
&lt;disks&gt;
&lt;disk name='vda'&gt;
&lt;disk name='/path/to/old'&gt;
&lt;source file='/path/to/new'/&gt;
&lt;/disk&gt;
&lt;disk name='vdb' snapshot='no'/&gt;
&lt;disk name='vdc'&gt;
&lt;source file='/path/to/newc'&gt;
&lt;seclabel model='dac' relabel='no'/&gt;
&lt;/source&gt;
&lt;/disk&gt;
&lt;/disks&gt;
&lt;/domainsnapshot&gt;</pre>

View File

@@ -19,15 +19,14 @@
a single attribute <code>type</code>, which is one of <code>dir</code>,
<code>fs</code>, <code>netfs</code>, <code>disk</code>,
<code>iscsi</code>, <code>logical</code>, <code>scsi</code>
(all <span class="since">since 0.4.1</span>),
<code>mpath</code> (<span class="since">since 0.7.1</span>),
<code>rbd</code> (<span class="since">since 0.9.13</span>),
<code>sheepdog</code> (<span class="since">since 0.10.0</span>),
<code>gluster</code> (<span class="since">since 1.2.0</span>),
<code>zfs</code> (<span class="since">since 1.2.8</span>),
<code>vstorage</code> (<span class="since">since 3.1.0</span>),
or <code>iscsi-direct</code> (<span class="since">since 4.7.0</span>).
This corresponds to the
(all <span class="since">since 0.4.1</span>), <code>mpath</code>
(<span class="since">since 0.7.1</span>), <code>rbd</code>
(<span class="since">since 0.9.13</span>), <code>sheepdog</code>
(<span class="since">since 0.10.0</span>),
<code>gluster</code> (<span class="since">since
1.2.0</span>), <code>zfs</code> (<span class="since">since
1.2.8</span>) or <code>vstorage</code> (<span class="since">since
3.1.0</span>). This corresponds to the
storage backend drivers listed further along in this document.
</p>
<h3><a id="StoragePoolFirst">General metadata</a></h3>
@@ -122,26 +121,15 @@
&lt;/source&gt;
...</pre>
<pre>
...
&lt;source&gt;
&lt;host name='localhost'/&gt;
&lt;dir path='/var/lib/libvirt/images'/&gt;
&lt;format type='nfs'/&gt;
&lt;protocol ver='3'/&gt;
&lt;/source&gt;
...</pre>
<dl>
<dt><code>device</code></dt>
<dd>Provides the source for pools backed by physical devices
(pool types <code>fs</code>, <code>logical</code>, <code>disk</code>,
<code>iscsi</code>, <code>iscsi-direct</code>, <code>zfs</code>,
<code>vstorage</code>).
<code>iscsi</code>, <code>zfs</code>, <code>vstorage</code>).
May be repeated multiple times depending on backend driver. Contains
a required attribute <code>path</code> which is either the fully
qualified path to the block device node or for <code>iscsi</code>
or <code>iscsi-direct</code> the iSCSI Qualified Name (IQN).
the iSCSI Qualified Name (IQN).
<span class="since">Since 0.4.1</span>
<p>An optional attribute <code>part_separator</code> for each
<code>path</code> may be supplied. Valid values for the attribute
@@ -346,7 +334,6 @@
<dt><code>host</code></dt>
<dd>Provides the source for pools backed by storage from a
remote server (pool types <code>netfs</code>, <code>iscsi</code>,
<code>iscsi-direct</code>,
<code>rbd</code>, <code>sheepdog</code>, <code>gluster</code>). Will be
used in combination with a <code>directory</code>
or <code>device</code> element. Contains an attribute <code>name</code>
@@ -361,19 +348,11 @@
server. See the <a href="storage.html">storage driver page</a> for
any restrictions for specific storage backends.
<span class="since">Since 0.4.1</span></dd>
<dt><code>initiator</code></dt>
<dd>Required by the <code>iscsi-direct</code> pool in order to provide
the iSCSI Qualified Name (IQN) to communicate with the pool's
<code>device</code> target IQN. There is one sub-element
<code>iqn</code> with the <code>name</code> attribute to describe
the IQN for the initiator.
<span class="since">Since 4.7.0</span></dd>
<dt><code>auth</code></dt>
<dd>If present, the <code>auth</code> element provides the
authentication credentials needed to access the source by the
setting of the <code>type</code> attribute (pool
types <code>iscsi</code>, <code>iscsi-direct</code>, <code>rbd</code>).
The <code>type</code>
types <code>iscsi</code>, <code>rbd</code>). The <code>type</code>
must be either "chap" or "ceph". Use "ceph" for
Ceph RBD (Rados Block Device) network sources and use "iscsi" for CHAP
(Challenge-Handshake Authentication Protocol) iSCSI
@@ -407,12 +386,6 @@
LVM metadata type. All drivers are required to have a default
value for this, so it is optional. <span class="since">Since 0.4.1</span></dd>
<dt><code>protocol</code></dt>
<dd>For a <code>netfs</code> Storage Pool provide a mechanism to
define which NFS protocol version number will be used to contact
the server's NFS service. The attribute <code>ver</code> accepts
an unsigned integer as the version number to use.
<span class="since">Since 5.1.0</span></dd>
<dt><code>vendor</code></dt>
<dd>Provides optional information about the vendor of the
storage device. This contains a single
@@ -478,8 +451,8 @@
The <code>owner</code> element contains the numeric user ID.
The <code>group</code> element contains the numeric group ID.
If <code>owner</code> or <code>group</code> aren't specified when
creating a directory, the UID and GID of the libvirtd process are used.
The <code>label</code> element contains the MAC (eg SELinux)
creating a directory, the values are inherited from the parent
directory. The <code>label</code> element contains the MAC (eg SELinux)
label string.
<span class="since">Since 0.4.1</span>
For running directory or filesystem based pools, these fields
@@ -508,145 +481,6 @@
device, measured in bytes. <span class="since">Since 0.4.1</span>
</p>
<h3><a id="StoragePoolRefresh">Refresh overrides</a></h3>
<p>
The optional <code>refresh</code> element can control how the pool and
associated volumes are refreshed (pool type <code>rbd</code>). The
<code>allocation</code> attribute of the <code>volume</code> child element
controls the method used for computing the allocation of a volume. The
valid attribute values are <code>default</code> to compute the actual
usage or <code>capacity</code> to use the logical capacity for cases where
computing the allocation is too expensive. The following XML snippet
shows the syntax:
<pre>
&lt;pool type="rbd"&gt;
&lt;name&gt;myrbdpool&lt;/name&gt;
...
&lt;source/&gt;
...
&lt;refresh&gt;
&lt;volume allocation='capacity'/&gt;
&lt;/refresh&gt;
...
&lt;/pool&gt;
</pre>
<span class="since">Since 5.2.0</span>
</p>
<h3><a id="StoragePoolNamespaces">Storage Pool Namespaces</a></h3>
<p>
Usage of Storage Pool Namespaces provides a mechanism to provide
pool type specific data in a free form or arbitrary manner via
XML syntax targeted solely for the needs of the specific pool type
which is not otherwise supported in standard XML. For the "fs" and
"netfs" pool types this provides a mechanism to provide additional
mount options on the command line. For the "rbd" pool this provides
a mechanism to override default settings for RBD configuration options.
</p>
<p>
Usage of namespaces comes with no support guarantees. It is intended
for developers testing out a concept prior to requesting an explicitly
supported XML option in libvirt, and thus should never be used in
production.
</p>
<dl>
<dt><code>fs:mount_opts</code></dt>
<dd>Provides an XML namespace mechanism to optionally utilize
specifically named options for the mount command via the "-o"
option for the <code>fs</code> or <code>netfs</code> type storage
pools. In order to designate that the Storage Pool will be using
the mechanism, the <code>pool</code> element must be modified to
provide the XML namespace attribute syntax as follows:
<p>
xmlns:fs='http://libvirt.org/schemas/storagepool/fs/1.0'
</p>
<p>
The <code>fs:mount_opts</code> defines the mount options by
specifying multiple <code>fs:option</code> subelements with
the attribute <code>name</code> specifying the mount option to
be added. The value of the named option is not checked since
it's possible options don't exist on all distributions. It is
expected that proper and valid options will be supplied for the
target host.
</p>
The following XML snippet shows the syntax required in order to
utilize for a netfs pool:
<pre>
&lt;pool type="netfs" xmlns:fs='http://libvirt.org/schemas/storagepool/fs/1.0'&gt;
&lt;name&gt;nfsimages&lt;/name&gt;
...
&lt;source&gt;
...
&lt;/source&gt;
...
&lt;target&gt;
...
&lt;/target&gt;
&lt;fs:mount_opts&gt;
&lt;fs:option name='sync'/&gt;
&lt;fs:option name='lazytime'/&gt;
&lt;/fs:mount_opts&gt;
&lt;/pool&gt;
...</pre>
<span class="since">Since 5.1.0.</span></dd>
<dt><code>rbd:config_opts</code></dt>
<dd>Provides an XML namespace mechanism to optionally utilize
specifically named options for the RBD configuration options
via the rados_conf_set API for the <code>rbd</code> type
storage pools. In order to designate that the Storage Pool
will be using the mechanism, the <code>pool</code> element
must be modified to provide the XML namespace attribute
syntax as follows:
<p>
xmlns:rbd='http://libvirt.org/schemas/storagepool/rbd/1.0'
</p>
<p>
The <code>rbd:config_opts</code> defines the configuration options
by specifying multiple <code>rbd:option</code> subelements with
the attribute <code>name</code> specifying the configuration option
to be added and <code>value</code> specifying the configuration
option value. The name and value for each option is only checked
to be not empty. The name and value provided are not checked since
it's possible options don't exist on all distributions. It is
expected that proper and valid options will be supplied for the
target host.
</p>
The following XML snippet shows the syntax required in order to
utilize
<pre>
&lt;pool type="rbd" xmlns:rbd='http://libvirt.org/schemas/storagepool/rbd/1.0'&gt;
&lt;name&gt;myrbdpool&lt;/name&gt;
...
&lt;source&gt;
...
&lt;/source&gt;
...
&lt;target&gt;
...
&lt;/target&gt;
...
&lt;rbd:config_opts&gt;
&lt;rbd:option name='client_mount_timeout' value='45'/&gt;
&lt;rbd:option name='rados_mon_op_timeout' value='20'/&gt;
&lt;rbd:option name='rados_osd_op_timeout' value='10'/&gt;
&lt;/rbd:config_opts&gt;
&lt;/pool&gt;
</pre>
<span class="since">Since 5.1.0.</span></dd>
</dl>
<h2><a id="StorageVol">Storage volume XML</a></h2>
<p>
A storage volume will generally be either a file or a device
@@ -802,8 +636,8 @@
The <code>owner</code> element contains the numeric user ID.
The <code>group</code> element contains the numeric group ID.
If <code>owner</code> or <code>group</code> aren't specified when
creating a supported volume, the UID and GID of the libvirtd process
are used. The <code>label</code> element contains the MAC (eg SELinux)
creating a supported volume, the values are inherited from the parent
directory. The <code>label</code> element contains the MAC (eg SELinux)
label string.
For existing directory or filesystem based volumes, these fields
will be filled with the values used by the existing file.

View File

@@ -1,101 +0,0 @@
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<body>
<h1>Storage Pool Capabilities XML format</h1>
<ul id="toc"></ul>
<h2><a id="Overview">Overview</a></h2>
<p>The Storage Pool Capabilities XML will provide the information
to determine what types of Storage Pools exist, whether the pool is
supported, and if relevant the source format types, the required
source elements, and the target volume format types. </p>
<p>The Storage Pool Capabilities XML provides more information than the
<a href="/html/libvirt-libvirt-host.html#virConnectGetCapabilities">
<code>virConnectGetCapabilities</code>
</a>
which only provides an enumerated list of supported pool types.</p>
<h2><a id="elements">Element and attribute overview</a></h2>
<p>A query interface was added to the virConnect API's to retrieve the
XML listing of the set of Storage Pool Capabilities
(<span class="since">Since 5.2.0</span>):</p>
<pre>
<a href="/html/libvirt-libvirt-domain.html#virConnectGetStoragePoolCapabilities">virConnectGetStoragePoolCapabilities</a>
</pre>
<p>The root element that emulator capability XML document starts with is
named <code>storagepoolCapabilities</code>. There will be any number of
<code>pool</code> child elements with two attributes <code>type</code>
and <code>supported</code>. Each <code>pool</code> element may have
a <code>poolOptions</code> or <code>volOptions</code> subelements to
describe the available features. Sample XML output is:</p>
<pre>
&lt;storagepoolCapabilities&gt;
&lt;pool type='dir' supported='yes'&gt;
&lt;volOptions&gt;
&lt;defaultFormat type='raw'&lt;/&gt;
&lt;enum name='targetFormatType'&gt;
&lt;value&gt;none&lt;/value&gt;
&lt;value&gt;raw&lt;/value&gt;
...
&lt;/enum&gt;
&lt;/volOptions&gt;
&lt;/pool&gt;
&lt;pool type='fs' supported='yes'&gt;
&lt;poolOptions&gt;
&lt;defaultFormat type='auto'&lt;/&gt;
&lt;enum name='sourceFormatType'&gt;
&lt;value&gt;auto&lt;/value&gt;
&lt;value&gt;ext2&lt;/value&gt;
...
&lt;/enum&gt;
&lt;/poolOptions&gt;
&lt;volOptions&gt;
&lt;defaultFormat type='raw'&lt;/&gt;
&lt;enum name='targetFormatType'&gt;
&lt;value&gt;none&lt;/value&gt;
&lt;value&gt;raw&lt;/value&gt;
...
&lt;/enum&gt;
&lt;/volOptions&gt;
&lt;/pool&gt;
...
&lt;/storagepoolCapabilities&gt;
</pre>
<p>The following section decribes subelements of the
<code>poolOptions</code> and <code>volOptions</code> subelements </p>:
<dl>
<dt><code>defaultFormat</code></dt>
<dd>For the <code>poolOptions</code>, the <code>type</code> attribute
describes the default format name used for the pool source. For the
<code>volOptions</code>, the <code>type</code> attribute describes
the default volume name used for each volume.
</dd>
<dl>
<dt><code>enum</code></dt>
<dd>Each enum uses a name from the list below with any number of
<code>value</code> value subelements describing the valid values.
<dl>
<dt><code>sourceFormatType</code></dt>
<dd>Lists all the possible <code>poolOptions</code> source
pool format types.
</dd>
<dt><code>targetFormatType</code></dt>
<dd>Lists all the possible <code>volOptions</code> target volume
format types.
</dd>
</dl>
</dd>
</dl>
</dl>
</body>
</html>

124
docs/genaclperms.pl Executable file
View File

@@ -0,0 +1,124 @@
#!/usr/bin/env perl
#
# Copyright (C) 2013 Red Hat, Inc.
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
#
# This library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library. If not, see
# <http://www.gnu.org/licenses/>.
#
use strict;
use warnings;
my @objects = (
"CONNECT", "DOMAIN", "INTERFACE",
"NETWORK","NODE_DEVICE", "NWFILTER",
"SECRET", "STORAGE_POOL", "STORAGE_VOL",
);
my %class;
foreach my $object (@objects) {
my $class = lc $object;
$class =~ s/(^\w|_\w)/uc $1/eg;
$class =~ s/_//g;
$class =~ s/Nwfilter/NWFilter/;
$class = "vir" . $class . "Ptr";
$class{$object} = $class;
}
my $objects = join ("|", @objects);
my %opts;
my $in_opts = 0;
my %perms;
while (<>) {
if ($in_opts) {
if (m,\*/,) {
$in_opts = 0;
} elsif (/\*\s*\@(\w+):\s*(.*?)\s*$/) {
$opts{$1} = $2;
}
} elsif (m,/\*\*,) {
$in_opts = 1;
} elsif (/VIR_ACCESS_PERM_($objects)_((?:\w|_)+),/) {
my $object = $1;
my $perm = lc $2;
next if $perm eq "last";
$perm =~ s/_/-/g;
$perms{$object} = {} unless exists $perms{$object};
$perms{$object}->{$perm} = {
desc => $opts{desc},
message => $opts{message},
anonymous => $opts{anonymous}
};
%opts = ();
}
}
print <<EOF;
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<body>
EOF
foreach my $object (sort { $a cmp $b } keys %perms) {
my $class = $class{$object};
my $olink = lc "object_" . $object;
print <<EOF;
<h3><a name="$olink">$class</a></h3>
<table class="acl">
<thead>
<tr>
<th>Permission</th>
<th>Description</th>
</tr>
</thead>
<tbody>
EOF
foreach my $perm (sort { $a cmp $b } keys %{$perms{$object}}) {
my $description = $perms{$object}->{$perm}->{desc};
die "missing description for $object.$perm" unless
defined $description;
my $plink = lc "perm_" . $object . "_" . $perm;
$plink =~ s/-/_/g;
print <<EOF;
<tr>
<td><a name="$plink">$perm</a></td>
<td>$description</td>
</tr>
EOF
}
print <<EOF;
</tbody>
</table>
EOF
}
print <<EOF;
</body>
</html>
EOF

View File

@@ -72,11 +72,11 @@ h6 {
font-size: 0.8em;
}
code, pre, tt {
code, pre {
font-family: LibvirtOverpassMono;
}
dd code, p code, tt {
dd code, p code {
background-color: #eeeeee;
}

View File

@@ -1,25 +0,0 @@
# Silly mistakes, mostly found in S-o-b or R-b tags.
"jdenemar redhat com" jdenemar@redhat.com
"pkrempa@redhat st.com" pkrempa@redhat.com
jyang@redhat jyang@redhat.com
wangjie88.huawei.com wangjie88@huawei.com
# This is information that's already present in .mailmap, and having to
# duplicate it is annoying. Unfortunately gitdm doesn't parse .mailmap
# and the format is different, so we can't just point it to the file
# either.
cedric.bosdonnat@free.fr cbosdonnat@suse.com
dan@berrange.com berrange@redhat.com
fabiano@fidencio.org fidencio@redhat.com
intrigeri+libvirt@boum.org intrigeri@boum.org
jim@meyering.net meyering@redhat.com
laine@laine.org laine@redhat.com
redhat@adrb.pl adrian.brzezinski@eo.pl
shilei.massclouds@gmx.com shi_lei@massclouds.com
# This deviates from what's found in .mailmap, but it makes more sense as
# far as gitdm is concerned since Jim was employed by Novell at the time.
jfehlig@linux-ypgk.site jfehlig@novell.com

View File

@@ -1,11 +0,0 @@
canonical.com
# Having an @ubuntu.com email address doesn't necessarily imply you're
# a Canonical employee; these people, however, seem to have been employed
# by Canonical at the time they contributed to libvirt.
jamie@ubuntu.com
serge.hallyn@ubuntu.com
smoser@ubuntu.com
soren@ubuntu.com
wgrant@ubuntu.com

View File

@@ -1,2 +0,0 @@
datto.com
dattobackup.com

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@@ -1,4 +0,0 @@
dreamhost.com
dreamhost.net
newdream.com
newdream.net

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@@ -1,7 +0,0 @@
ibm.com
# These IBM employees used their personal email address when contributing
# to libvirt and we don't have the corresponding @ibm.com address on file.
danielhb413@gmail.com
jcfaracco@gmail.com

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@@ -1,2 +0,0 @@
nec.co.jp
nec.com

View File

@@ -1,102 +0,0 @@
6wind.com 6WIND
active.by ActiveCloud
aero.org Aerospace
akamai.com Akamai
amd.com AMD
anchor.net.au Anchor
aristanetworks.com Arista Networks
arpnetworks.com ARP Networks
av-test.de AV-TEST
b1-systems.de B1 Systems
baidu.com Baidu
brightbox.co.uk Brightbox
cisco.com Cisco
citrix.com Citrix
cloudwatt.com Cloudwatt
codethink.co.uk Codethink
cumulusnetworks.com Cumulus Networks
dataductus.se Data Ductus
datagravity.com DataGravity
dell.com Dell
designassembly.de Coffee-Break-Games
diateam.net DIATEAM
eldorado.org.br ELDORADO
endocode.com Endocode
eo.pl eo Networks
ericsson.com Ericsson
fb.com Facebook
firewall-services.com Firewall-Services
freescale.com Freescale
fujitsu.com Fujitsu
gluster.com Gluster
gridcentric.ca Gridcentric
h3c.com H3C
hde.co.jp HDE
hds.com Hitachi Data Systems
hitachi.com Hitachi
hoster-ok.com hoster-ok.com
hp.com HP
huawei.com Huawei
inktank.com Inktank Storage
intel.com Intel
intellilink.co.jp NTT DATA INTELLILINK
invisiblethingslab.com Invisible Things Lab
jtan.com JTAN
juniper.net Juniper Networks
laposte.net La Poste
le.com Le.com
linaro.org Linaro
linutronix.de Linutronix
linux2go.dk Linux2Go
liquidweb.com Liquid Web
massclouds.com MassClouds
mellanox.com Mellanox
midokura.com Midokura
mirantis.com Mirantis
munzinger.de Munzinger Archiv
netease.com NetEase
netzquadrat.de [netzquadrat]
nicira.com Nicira
nimboxx.com NIMBOXX
novell.com Novell
ntt.co.jp NTT Group
ohmu.fi OHMU
open-minds.org OpenThink
oracle.com Oracle
os-t.de OpenSource Training
otb.bg Open Technologies Bulgaria
outscale.com OUTSCALE
parallels.com Parallels
petalogix.com PetaLogix
quobyte.com Quobyte
ravellosystems.com Ravello Systems
samsung.com Samsung
sde.cz SDE
semihalf.com Semihalf
siemens.com Siemens
smartjog.com SmartJog
solarflare.com Solarflare
ssatr.ch Swiss Satellite Radio
sun.com Sun Microsystems
tabit.pro Tabit
taobao.com Taobao
tdf.fr TDF
tencent.com Tencent
transip.nl TransIP
tresys.com Tresys
uniudc.com Tsinghua Uniudc
univention.de Univention
veritas.com Veritas
vhgroup.net VHGroup
virtualopensystems.com Virtual Open Systems
websense.com Websense
wiktel.com Wikstrom Telephone Company
windriver.com Wind River
winhong.com Winhong
xmission.com XMission
xs4all.nl XS4ALL
yadro.com YADRO
yandex.ru Yandex
yunify.com Yunify
zstack.io ZStack
zte.com.cn ZTE

View File

@@ -1,6 +0,0 @@
redhat.com
# These Red Hat employees used their personal email address when contributing
# to libvirt and we don't have the corresponding @redhat.com address on file.
lkundrak@v3.sk

View File

@@ -1,7 +0,0 @@
suse.com
suse.de
# These SUSE employees used their personal email address when contributing
# to libvirt and we don't have the corresponding @suse.com address on file.
olaf@aepfle.de

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@@ -1,2 +0,0 @@
openvz.org
virtuozzo.com

View File

@@ -1,17 +0,0 @@
byu.net
csiro.au
epita.fr
hibikino.ne.jp
infn.it
inria.fr
isi.edu
nict.go.jp
parisdescartes.fr
telecom-bretagne.eu
tu-berlin.de
tu-dresden.de
ucla.edu
upc.edu
utah.edu
uvt.ro
wide.ad.jp

View File

@@ -1,13 +0,0 @@
alpinelinux.org
debian.org
fedoraproject.org
fsf.org
gentoo.org
gnome.org
gnu.org
kernel.org
linux.com
openbsd.org
salasaga.org
samba.org
sdf.org

View File

@@ -1,85 +0,0 @@
# These are all domains you can get a personal email address from, so it's
# fair to assume people using such addresses are contributing in their spare
# time rather than on behalf of their respective employers.
126.com
gmail.com
gmx.com
googlemail.com
hotmail.com
mail.ru
pobox.com
protonmail.com
riseup.net
web.de
yahoo.com
# Same as the above, but for domains that don't generally allow random
# people to sign up for an email address. In this case we list the email
# addresses directly rather than just the domain, because we can't really
# consider the domain itself one way or the other.
=@eater.me
adam@pandorasboxen.com
agx@sigxcpu.org
alexander.nusov@nfvexpress.com
andres@lagarcavilla.org
asad.saeed@acidseed.com
atler@pld-linux.org
benoar@dolka.fr
beorn@binaries.fr
bigon@bigon.be
bugzilla.redhat.simon@arlott.org
cardoe@cardoe.com
charles@dyfis.net
d.herrendoerfer@herrendoerfer.name
dan@danny.cz
debfx@fobos.de
eike@sf-mail.de
exo@tty.sk
fritz@fritz-elfert.de
gene@czarc.net
gordon@dragonsdawn.net
heathpetersen@kandre.com
ibaldo@adinet.com.uy
igor47@moomers.org
infos@nafets.de
intrigeri@boum.org
james410@cowgill.org.uk
james@shubin.ca
jasper@humppa.nl
jeremy@goop.org
jk@ozlabs.org
jwm@horde.net
klaus@ethgen.de
lacos@caesar.elte.hu
lenaic@lhuard.fr.eu.org
libvirt@dunquino.com
lists@egidy.de
marti@juffo.org
max@rfc2324.org
michael@ellerman.id.au
mike@very.puzzling.org
n0ano@n0ano.com
neil@aldur.co.uk
nobody@nowhere.ws
peter@kieser.ca
pieter@hollants.com
raimue@codingfarm.de
richard@nod.at
rmy@tigress.co.uk
ruben@rubenkerkhof.com
rufo@rufoa.com
slawek@kaplonski.pl
soulxu@soulxu-thinkpad-t410.(none)
stybla@turnovfree.net
tai@rakugaki.org
thomas@scripty.at
v.tolstov@selfip.ru
ville.skytta@iki.fi
vincent@bernat.im
wido@widodh.nl
wiedi@frubar.net
wongc-redhat@hoku.net
xschen@tnsoft.com.cn
yurchor@ukr.net

View File

@@ -155,7 +155,7 @@
also implicitly stating that they have the legal right to make the
contribution, if doing so on behalf of a broader organization /
company. Most of the project's code is distributed under the GNU
Lesser General Public License, version 2.1 or later. Details of the
Lesser General Public License, version 2 or later. Details of the
exact license under which contributions will be presumed to be
covered are found in the source repositories, or website in question.
</p>

View File

@@ -29,11 +29,11 @@
file from zanata.</p>
</li>
<li><p>The simplest way to send patches is to use the
<a href="https://github.com/stefanha/git-publish"><code>git-publish</code></a>
tool. All libvirt-related repositories contain a config file that
tells git-publish to use the correct mailing list and subject prefix.</p>
<p>Alternatively, you may send patches using <code>git send-email</code>.</p>
<li><p>Post patches using <code>git send-email</code>, with git
rename detection enabled. You need a one-time setup of:</p>
<pre>
git config diff.renames true
</pre>
<p>Also, for code motion patches, you may find that <code>git
diff --patience</code> provides an easier-to-read patch.
However, the usual workflow of libvirt developer is:</p>
@@ -72,8 +72,8 @@
</pre>
<p>As a rule, patches should be sent to the mailing list only: all
developers are subscribed to libvir-list and read it regularly, so
<strong>please don't CC individual developers</strong> unless
they've explicitly asked you to.</p>
please don't CC individual developers unless they've explicitly
asked you to.</p>
<p>Avoid using mail clients for sending patches, as most of them
will mangle the messages in some way, making them unusable for our
purposes. Gmail and other Web-based mail clients are particularly
@@ -81,11 +81,9 @@
<p>If everything went well, your patch should show up on the
<a href="https://www.redhat.com/archives/libvir-list/">libvir-list
archives</a> in a matter of minutes; if you still can't find it on
there after an hour or so, you should double-check your setup.
<strong>Note that, if you are not already a subscriber, your very
first post to the mailing list will be
subject to moderation</strong>, and it's not uncommon for that to
take around a day.</p>
there after an hour or so, you should double-check your setup. Note
that your very first post to the mailing list will be subject to
moderation, and it's not uncommon for that to take around a day.</p>
<p>Please follow this as close as you can, especially the rebase and
<code>git send-email</code> part, as it makes life easier for other
developers to review your patch set.</p>
@@ -141,7 +139,14 @@
</li>
<li><p>Run the automated tests on your code before submitting any changes.
That is:
In particular, configure with compile warnings set to
-Werror. This is done automatically for a git checkout; from a
tarball, use:</p>
<pre>
./configure --enable-werror
</pre>
<p>
and run the tests:
</p>
<pre>
make check
@@ -179,13 +184,12 @@
<p>
When debugging failures during development, it is possible
to focus in on just the failing subtests by using
VIR_TEST_RANGE. I.e. to run all tests from 3 to 20 with the
exception of tests 6 and 16, use:
to focus in on just the failing subtests by using TESTS and
VIR_TEST_RANGE:
</p>
<pre>
VIR_TEST_DEBUG=1 VIR_TEST_RANGE=3-5,7-20,^16 ./run tests/qemuxml2argvtest
make check VIR_TEST_DEBUG=1 VIR_TEST_RANGE=3-5 TESTS=qemuxml2argvtest
</pre>
<p>
@@ -339,36 +343,6 @@
Richard Jones' guide to working with open source projects</a>.
</p>
<h2><a id="lang">Language Usage</a></h2>
<p>
The libvirt repository makes use of a large number of programming
languages. It is anticipated that in the future libvirt will adopt
use of other new languages. To reduce the overall burden on developers,
there is thus a general desire to phase out usage of some of the
existing languages.
</p>
<p>
The preferred languages at this time are:
</p>
<ul>
<li>C - for the main libvirt codebase. Dialect supported by
GCC/CLang only.</li>
<li>Python - for supporting build scripts / tools. Code must
run with both version 2.7 and 3.x at this time.</li>
</ul>
<p>
Languages that should not be used for any new contributions:
</p>
<ul>
<li>Perl - build scripts must be written in Python instead.</li>
<li>Shell - build scripts must be written in Python instead.</li>
</ul>
<h2><a id="tooling">Tooling</a></h2>
<p>
@@ -852,39 +826,6 @@
}
</pre>
<h2><a id="conditions">Conditional expressions</a></h2>
<p>For readability reasons new code should avoid shortening comparisons
to 0 for numeric types. Boolean and pointer comparisions may be
shortened. All long forms are okay:
</p>
<pre>
virFooPtr foos = NULL;
size nfoos = 0;
bool hasFoos = false;
GOOD:
if (!foos)
if (!hasFoos)
if (nfoos == 0)
if (foos == NULL)
if (hasFoos == true)
BAD:
if (!nfoos)
if (nfoos)
</pre>
<p>New code should avoid the ternary operator as much as possible.
Specifically it must never span more than one line or nest:
</p>
<pre>
BAD:
char *foo = baz ?
virDoSomethingReallyComplex(driver, vm, something, baz->foo) :
NULL;
char *foo = bar ? bar->baz ? bar->baz->foo : "nobaz" : "nobar";
</pre>
<h2><a id="preprocessor">Preprocessor</a></h2>
<p>Macros defined with an ALL_CAPS name should generally be
@@ -985,151 +926,99 @@ BAD:
it points to, or it is aliased to another pointer that is.
</p>
<h2><a id="attribute_annotations">Attribute annotations</a></h2>
<p>
Use the following annotations to help the compiler and/or static
analysis tools understand the code better:
</p>
<table class="top_table">
<tr><th>Macro</th><th>Meaning</th></tr>
<tr><td><code>ATTRIBUTE_NONNULL</code></td><td>passing NULL for this parameter is not allowed</td></tr>
<tr><td><code>ATTRIBUTE_PACKED</code></td><td>force a structure to be packed</td></tr>
<tr><td><code>G_GNUC_FALLTHROUGH</code></td><td>allow code reuse by multiple switch cases</td></tr>
<tr><td><code>G_GNUC_NO_INLINE</code></td><td>the function is mocked in the test suite</td></tr>
<tr><td><code>G_GNUC_NORETURN</code></td><td>the function never returns</td></tr>
<tr><td><code>G_GNUC_NULL_TERMINATED</code></td><td>last parameter must be NULL</td></tr>
<tr><td><code>G_GNUC_PRINTF</code></td><td>validate that the formatting string matches parameters</td></tr>
<tr><td><code>G_GNUC_UNUSED</code></td><td>parameter is unused in this implementation of the function</td></tr>
<tr><td><code>G_GNUC_WARN_UNUSED_RESULT</code></td><td>the return value must be checked</td></tr>
</table>
<h2><a id="glib">Adoption of GLib APIs</a></h2>
<h2><a id="memalloc">Low level memory management</a></h2>
<p>
Libvirt has adopted use of the
<a href="https://developer.gnome.org/glib/stable/">GLib library</a>.
Due to libvirt's long history of development, there are many APIs
in libvirt, for which GLib provides an alternative solution. The
general rule to follow is that the standard GLib solution will be
preferred over historical libvirt APIs. Existing code will be
ported over to use GLib APIs over time, but new code should use
the GLib APIs straight away where possible.
Use of the malloc/free/realloc/calloc APIs is deprecated in the libvirt
codebase, because they encourage a number of serious coding bugs and do
not enable compile time verification of checks for NULL. Instead of these
routines, use the macros from viralloc.h.
</p>
<p>
The following is a list of libvirt APIs that should no longer be
used in new code, and their suggested GLib replacements:
</p>
<ul>
<li><p>To allocate a single object:</p>
<dl>
<dt><code>VIR_ALLOC</code>, <code>VIR_REALLOC</code>,
<code>VIR_RESIZE_N</code>, <code>VIR_EXPAND_N</code>,
<code>VIR_SHRINK_N</code>, <code>VIR_FREE</code>,
<code>VIR_APPEND_ELEMENT</code>, <code>VIR_INSERT_ELEMENT</code>,
<code>VIR_DELETE_ELEMENT</code></dt>
<dd>Prefer the GLib APIs <code>g_new0</code>/<code>g_renew</code>/
<code>g_free</code> in most cases. There should rarely be a need
to use <code>g_malloc</code>/<code>g_realloc</code>.
Instead of using plain C arrays, it is preferrable to use
one of the GLib types, <code>GArray</code>, <code>GPtrArray</code>
or <code>GByteArray</code>. These
all use a struct to track the array memory and size together
and efficiently resize. <strong>NEVER MIX</strong> use of the
classic libvirt memory allocation APIs and GLib APIs within
a single method. Keep the style consistent, converting existing
code to GLib style in a separate, prior commit.</dd>
<pre>
virDomainPtr domain;
<dt><code>virStrerror</code></dt>
<dd>The GLib <code>g_strerror()</code> function should be used instead,
which has a simpler calling convention as an added benefit.</dd>
if (VIR_ALLOC(domain) &lt; 0)
return NULL;
</pre>
</li>
<table class="top_table">
<tr><th>deprecated version</th><th>GLib version</th><th>Notes</th></tr>
<tr><td><code>VIR_ALLOC(var)</code></td><td><code>g_new0(var_t, 1)</code></td>
<td>the type needs to be passed explicitly</td></tr>
<tr><td><code>VIR_ALLOC_N</code></td><td><code>g_new0(var_t, n)</code></td><td></td></tr>
<tr><td><code>VIR_REALLOC_N</code></td><td><code>g_renew(var_t, ptr, n)</code></td>
<td>the newly added memory is not zeroed</td></tr>
<tr><td><code>VIR_EXPAND_N</code></td><td><code>g_renew(var_t, ptr, n)</code></td>
<td>zero the new memory manually or use an array type</td></tr>
<tr><td><code>VIR_SHRINK_N</code></td><td><code>g_renew(var_t, ptr, n)</code></td>
<td></td></tr>
<tr><td><code>VIR_APPEND_ELEMENT</code></td><td><code>g_array_append_val</code></td>
<td><code>g_ptr_array_add</code> or <code>g_byte_array_append</code></td></tr>
<tr><td><code>VIR_INSERT_ELEMENT</code></td><td><code>g_array_insert_val</code></td>
<td><code>g_ptr_array_insert</code></td></tr>
<tr><td><code>VIR_DELETE_ELEMENT</code></td><td><code>g_array_remove_index</code></td>
<td><code>g_ptr_array_remove_index</code> or <code>g_byte_array_remove_index</code></td></tr>
<tr><td><code>VIR_FREE</code></td><td><code>g_free</code></td>
<td><code>g_free</code> does not zero the pointer</td></tr>
</table>
<li><p>To allocate an array of objects:</p>
<pre>
virDomainPtr domains;
size_t ndomains = 10;
<p>String allocation macros and functions:</p>
<table class="top_table">
<tr><th>deprecated version</th><th>GLib version</th><th>Notes</th></tr>
<tr><td><code>virAsprintf</code></td><td><code>g_strdup_printf</code></td><td></td></tr>
<tr><td><code>virVasprintf</code></td><td><code>g_strdup_vprint</code></td>
<td>use <code>g_vasprintf</code> if you really need to know the returned length</td></tr>
<tr><td><code>virStrerror</code></td><td><code>g_strerror</code></td>
<td>the error strings are cached globally so no need to free it</td></tr>
</table>
</dl>
if (VIR_ALLOC_N(domains, ndomains) &lt; 0)
return NULL;
</pre>
</li>
<p>
The following libvirt APIs have been deleted already:
</p>
<dl>
<dt><code>VIR_AUTOPTR</code>, <code>VIR_AUTOCLEAN</code>, <code>VIR_AUTOFREE</code></dt>
<dd>The GLib macros <code>g_autoptr</code>, <code>g_auto</code> and
<code>g_autofree</code> must be used
instead in all new code. In existing code, the GLib macros must
never be mixed with libvirt macros within a method, nor should
they be mixed with <code>VIR_FREE</code>. If introducing GLib macros to an
existing method, any use of libvirt macros must be converted
in an independent commit.
</dd>
<li><p>To allocate an array of object pointers:</p>
<pre>
virDomainPtr *domains;
size_t ndomains = 10;
<dt><code>VIR_DEFINE_AUTOPTR_FUNC</code>, <code>VIR_DEFINE_AUTOCLEAN_FUNC</code></dt>
<dd>The GLib macros <code>G_DEFINE_AUTOPTR_CLEANUP_FUNC</code> and
<code>G_DEFINE_AUTO_CLEANUP_CLEAR_FUNC</code> must be used in all
new code. Existing code should be converted to the
new macros where relevant. It is permissible to use
<code>g_autoptr</code>, <code>g_auto</code> on an object whose cleanup function
is declared with the libvirt macros and vice-versa.
</dd>
if (VIR_ALLOC_N(domains, ndomains) &lt; 0)
return NULL;
</pre>
</li>
<dt><code>VIR_AUTOUNREF</code></dt>
<dd>The GLib macros <code>g_autoptr</code> and <code>G_DEFINE_AUTOPTR_CLEANUP_FUNC</code>
should be used to manage autoclean of virObject classes.
This matches usage with GObject classes.</dd>
<li><p>To re-allocate the array of domains to be 1 element
longer (however, note that repeatedly expanding an array by 1
scales quadratically, so this is recommended only for smaller
arrays):</p>
<pre>
virDomainPtr domains;
size_t ndomains = 0;
<dt><code>VIR_STRDUP</code>, <code>VIR_STRNDUP</code></dt>
<dd>Prefer the GLib APIs <code>g_strdup</code> and <code>g_strndup</code>.</dd>
</dl>
<table class="top_table">
<tr><th>deleted version</th><th>GLib version</th><th>Notes</th></tr>
<tr><td><code>VIR_AUTOPTR</code></td><td><code>g_autoptr</code></td><td></td></tr>
<tr><td><code>VIR_AUTOCLEAN</code></td><td><code>g_auto</code></td><td></td></tr>
<tr><td><code>VIR_AUTOFREE</code></td><td><code>g_autofree</code></td><td>The GLib version does not use parentheses</td></tr>
<tr><td><code>VIR_AUTOUNREF</code></td><td><code>g_autoptr</code></td><td>The cleanup function needs to be defined</td></tr>
<tr><td><code>VIR_DEFINE_AUTOPTR_FUNC</code></td><td><code>G_DEFINE_AUTOPTR_CLEANUP_FUNC</code></td><td></td></tr>
<tr><td><code>VIR_DEFINE_AUTOCLEAN_FUNC</code></td><td><code>G_DEFINE_AUTO_CLEANUP_CLEAR_FUNC</code></td><td></td></tr>
<tr><td><code>VIR_STEAL_PTR</code></td><td><code>g_steal_pointer</code></td>
<td><code>a = f(&amp;b)</code> instead of <code>f(a, b)</code></td></tr>
<tr><td><code>VIR_RETURN_PTR</code></td><td><code>return g_steal_pointer</code></td><td></td></tr>
<tr><td><code>ARRAY_CARDINALITY</code></td><td><code>G_N_ELEMENTS</code></td><td></td></tr>
<tr><td><code>ATTRIBUTE_FALLTHROUGH</code></td><td><code>G_GNUC_FALLTHROUGH</code></td><td></td></tr>
<tr><td><code>ATTRIBUTE_FMT_PRINTF</code></td><td><code>G_GNUC_PRINTF</code></td><td></td></tr>
<tr><td><code>ATTRIBUTE_NOINLINE</code></td><td><code>G_GNUC_NO_INLINE</code></td><td></td></tr>
<tr><td><code>ATTRIBUTE_NORETURN</code></td><td><code>G_GNUC_NORETURN</code></td><td></td></tr>
<tr><td><code>ATTRIBUTE_RETURN_CHECK</code></td><td><code>G_GNUC_WARN_UNUSED_RESULT</code></td><td></td></tr>
<tr><td><code>ATTRIBUTE_SENTINEL</code></td><td><code>G_GNUC_NULL_TERMINATED</code></td><td></td></tr>
<tr><td><code>ATTRIBUTE_UNUSED</code></td><td><code>G_GNUC_UNUSED</code></td><td></td></tr>
<tr><td><code>VIR_STRDUP</code></td><td><code>g_strdup</code></td><td></td></tr>
<tr><td><code>VIR_STRNDUP</code></td><td><code>g_strndup</code></td><td></td></tr>
</table>
if (VIR_EXPAND_N(domains, ndomains, 1) &lt; 0)
return NULL;
domains[ndomains - 1] = domain;
</pre></li>
<li><p>To ensure an array has room to hold at least one more
element (this approach scales better, but requires tracking
allocation separately from usage)</p>
<pre>
virDomainPtr domains;
size_t ndomains = 0;
size_t ndomains_max = 0;
if (VIR_RESIZE_N(domains, ndomains_max, ndomains, 1) &lt; 0)
return NULL;
domains[ndomains++] = domain;
</pre>
</li>
<li><p>To trim an array of domains from its allocated size down
to the actual used size:</p>
<pre>
virDomainPtr domains;
size_t ndomains = x;
size_t ndomains_max = y;
VIR_SHRINK_N(domains, ndomains_max, ndomains_max - ndomains);
</pre></li>
<li><p>To free an array of domains:</p>
<pre>
virDomainPtr domains;
size_t ndomains = x;
size_t ndomains_max = y;
size_t i;
for (i = 0; i &lt; ndomains; i++)
VIR_FREE(domains[i]);
VIR_FREE(domains);
ndomains_max = ndomains = 0;
</pre>
</li>
</ul>
<h2><a id="file_handling">File handling</a></h2>
@@ -1270,14 +1159,18 @@ BAD:
</p>
<pre>
dst = g_strdup(src);
dst = g_strndup(src, n);
VIR_STRDUP(char *dst, const char *src);
VIR_STRNDUP(char *dst, const char *src, size_t n);
</pre>
<p>
You should avoid using strdup or strndup directly as they do not handle
out-of-memory errors, and do not allow a NULL source.
Use <code>g_strdup</code> and <code>g_strndup</code> from GLib which
abort on OOM and handle NULL source by returning NULL.
You should avoid using strdup or strndup directly as they do not report
out-of-memory error, and do not allow a NULL source. Use
VIR_STRDUP or VIR_STRNDUP macros instead, which return 0 for
NULL source, 1 for successful copy, and -1 for allocation
failure with the error already reported. In very
specific cases, when you don't want to report the out-of-memory error, you
can use VIR_STRDUP_QUIET or VIR_STRNDUP_QUIET, but such usage is very rare
and usually considered a flaw.
</p>
<h2><a id="strbuf">Variable length string buffer</a></h2>
@@ -1285,11 +1178,7 @@ BAD:
<p>
If there is a need for complex string concatenations, avoid using
the usual sequence of malloc/strcpy/strcat/snprintf functions and
make use of either the
<a href="https://developer.gnome.org/glib/stable/glib-Strings.html">GString</a>
type from GLib or the virBuffer API.
If formatting XML or QEMU command line is needed, use the virBuffer
API described in virbuffer.h, since it has helper functions for those.
make use of the virBuffer API described in virbuffer.h
</p>
<p>Typical usage is as follows:</p>
@@ -1298,14 +1187,12 @@ BAD:
char *
somefunction(...)
{
g_auto(virBuffer) buf = VIR_BUFFER_INITIALIZER;
virBuffer buf = VIR_BUFFER_INITIALIZER;
...
virBufferAddLit(&amp;buf, "&lt;domain&gt;\n");
virBufferAsprintf(&amp;buf, " &lt;memory&gt;%d&lt;/memory&gt;\n", memory);
if (some_error)
return NULL; /* g_auto will free the memory used so far */
...
virBufferAddLit(&amp;buf, "&lt;/domain&gt;\n");
@@ -1374,12 +1261,12 @@ BAD:
Whenever you add a new printf-style function, i.e., one with a format
string argument and following "..." in its prototype, be sure to use
gcc's printf attribute directive in the prototype. For example, here's
the one for virCommandAddEnvFormat in vircommand.h:
the one for virAsprintf, in util.h:
</p>
<pre>
void virCommandAddEnvFormat(virCommandPtr cmd, const char *format, ...)
G_GNUC_PRINTF(2, 3);
int virAsprintf(char **strp, const char *fmt, ...)
ATTRIBUTE_FORMAT(printf, 2, 3);
</pre>
<p>
@@ -1389,40 +1276,14 @@ BAD:
</p>
<p>
When printing to a string, consider using GString or virBuffer for
incremental allocations, g_strdup_printf for a one-shot allocation,
and g_snprintf for fixed-width buffers. Only use g_sprintf,
if you can prove the buffer won't overflow.
When printing to a string, consider using virBuffer for
incremental allocations, virAsprintf for a one-shot allocation,
and snprintf for fixed-width buffers. Do not use sprintf, even
if you can prove the buffer won't overflow, since gnulib does
not provide the same portability guarantees for sprintf as it
does for snprintf.
</p>
<h2><a id="errors">Error message format</a></h2>
<p>
Error messages visible to the user should be short and descriptive. All
error messages are translated using gettext and thus must be wrapped in
<code>_()</code> macro. To simplify the translation work, the error message
must not be concatenated from various parts. To simplify searching for
the error message in the code the strings should not be broken even
if they result into a line longer than 80 columns and any formatting
modifier should be enclosed by quotes or other obvious separator.
If a string used with <code>%s</code> can be NULL the NULLSTR macro must
be used.
</p>
<pre>
GOOD: virReportError(VIR_ERR_INTERNAL_ERROR,
_("Failed to connect to remote host '%s'"), hostname)
BAD: virReportError(VIR_ERR_INTERNAL_ERROR,
_("Failed to %s to remote host '%s'"),
"connect", hostname);
BAD: virReportError(VIR_ERR_INTERNAL_ERROR,
_("Failed to connect "
"to remote host '%s'),
hostname);
</pre>
<h2><a id="goto">Use of goto</a></h2>
<p>
@@ -1442,16 +1303,11 @@ BAD:
single label at the end of the function. It's almost always ok
to use this style. In particular, if the cleanup code only
involves free'ing memory, then having multiple labels is
overkill. g_free() and most of the functions named XXXFree() in
libvirt is required to handle NULL as its arg. This does not
apply to libvirt's public APIs. Thus you can
overkill. VIR_FREE() and every function named XXXFree() in
libvirt is required to handle NULL as its arg. Thus you can
safely call free on all the variables even if they were not yet
allocated (yes they have to have been initialized to NULL).
This is much simpler and clearer than having multiple labels.
Note that most of libvirt's type declarations can be marked with
either <code>g_autofree</code> or <code>g_autoptr</code> which uses
the compiler's <code>__attribute__((cleanup))</code> that calls
the appropriate free function when the variable goes out of scope.
</p>
<p>
@@ -1528,7 +1384,14 @@ int foo()
how things work, it's better
to wait for a more authoritative feedback though. Before committing, please
also rebuild locally, run 'make check syntax-check', and make sure you
don't raise errors.
don't raise errors. Try to look for warnings too; for example,
configure with
</p>
<pre>
--enable-compile-warnings=error
</pre>
<p>
which adds -Werror to compile flags, so no warnings get missed
</p>
<p>
@@ -1548,10 +1411,6 @@ int foo()
fixes for documentation and code comments can be managed
in the same way, but still make sure they get reviewed if non-trivial.
</li>
<li>(ir)regular pulls from other repositories or automated updates, such
as the .gnulib submodule updates, pulling in new translations or updating
the container images for the CI system
</li>
</ul>
</body>
</html>

View File

@@ -91,8 +91,10 @@
&lt;/network&gt;
&lt;/hookData&gt;</pre>
<p>In the case of an network port being created / deleted, the network
XML will be followed with the full XML description of the port:</p>
<p>In the case of an interface
being plugged/unplugged to/from the network, the network XML will be
followed with the full XML description of the domain containing the
interface that is being plugged/unplugged:</p>
<pre>&lt;hookData&gt;
&lt;network&gt;
@@ -100,11 +102,11 @@
&lt;uuid&gt;afca425a-2c3a-420c-b2fb-dd7b4950d722&lt;/uuid&gt;
...
&lt;/network&gt;
&lt;networkport&gt;
&lt;uuid&gt;5d744f21-ba4a-4d6e-bdb2-30a35ff3207d&lt;/uuid&gt;
...
&lt;plug type='direct' dev='ens3' mode='vepa'/&gt;
&lt;/networkport&gt;
&lt;domain type='$domain_type' id='$domain_id'&gt;
&lt;name&gt;$domain_name&lt;/name&gt;
&lt;uuid&gt;afca425a-2c3a-420c-b2fb-dd7b4950d722&lt;/uuid&gt;
...
&lt;/domain&gt;
&lt;/hookData&gt;</pre>
<p>Please note that this approach is different from other cases such as
@@ -294,15 +296,15 @@
<pre>/etc/libvirt/hooks/network network_name stopped end -</pre></li>
<li>Later, when network is started and there's an interface from a
domain to be plugged into the network, the hook script is called as:<br/>
<pre>/etc/libvirt/hooks/network network_name port-created begin -</pre>
<pre>/etc/libvirt/hooks/network network_name plugged begin -</pre>
Please note, that in this case, the script is passed both network and
port XMLs on its stdin.</li>
domain XMLs on its stdin.</li>
<li>When network is updated, the hook script is called as:<br/>
<pre>/etc/libvirt/hooks/network network_name updated begin -</pre></li>
<li>When the domain from previous case is shutting down, the interface
is unplugged. This leads to another script invocation:<br/>
<pre>/etc/libvirt/hooks/network network_name port-deleted begin -</pre>
And again, as in previous case, both network and port XMLs are passed
<pre>/etc/libvirt/hooks/network network_name unplugged begin -</pre>
And again, as in previous case, both network and domain XMLs are passed
onto script's stdin.</li>
</ul>

437
docs/hvsupport.pl Executable file
View File

@@ -0,0 +1,437 @@
#!/usr/bin/env perl
use strict;
use warnings;
use File::Find;
die "syntax: $0 SRCDIR\n" unless int(@ARGV) == 1;
my $srcdir = shift @ARGV;
my $symslibvirt = "$srcdir/libvirt_public.syms";
my $symsqemu = "$srcdir/libvirt_qemu.syms";
my $symslxc = "$srcdir/libvirt_lxc.syms";
my @drivertable = (
"$srcdir/driver-hypervisor.h",
"$srcdir/driver-interface.h",
"$srcdir/driver-network.h",
"$srcdir/driver-nodedev.h",
"$srcdir/driver-nwfilter.h",
"$srcdir/driver-secret.h",
"$srcdir/driver-state.h",
"$srcdir/driver-storage.h",
"$srcdir/driver-stream.h",
);
my %groupheaders = (
"virHypervisorDriver" => "Hypervisor APIs",
"virNetworkDriver" => "Virtual Network APIs",
"virInterfaceDriver" => "Host Interface APIs",
"virNodeDeviceDriver" => "Host Device APIs",
"virStorageDriver" => "Storage Pool APIs",
"virSecretDriver" => "Secret APIs",
"virNWFilterDriver" => "Network Filter APIs",
);
my @srcs;
find({
wanted => sub {
if (m!$srcdir/.*/\w+_(driver|common|tmpl|monitor|hal|udev)\.c$!) {
push @srcs, $_ if $_ !~ /vbox_driver\.c/;
}
}, no_chdir => 1}, $srcdir);
# Map API functions to the header and documentation files they're in
# so that we can generate proper hyperlinks to their documentation.
#
# The function names are grep'd from the XML output of apibuild.py.
sub getAPIFilenames {
my $filename = shift;
my %files;
my $line;
open FILE, "<", $filename or die "cannot read $filename: $!";
while (defined($line = <FILE>)) {
if ($line =~ /function name='([^']+)' file='([^']+)'/) {
$files{$1} = $2;
}
}
close FILE;
if (keys %files == 0) {
die "No functions found in $filename. Has the apibuild.py output changed?";
}
return \%files;
}
sub parseSymsFile {
my $apisref = shift;
my $prefix = shift;
my $filename = shift;
my $xmlfilename = shift;
my $line;
my $vers;
my $prevvers;
my $filenames = getAPIFilenames($xmlfilename);
open FILE, "<$filename"
or die "cannot read $filename: $!";
while (defined($line = <FILE>)) {
chomp $line;
next if $line =~ /^\s*#/;
next if $line =~ /^\s*$/;
next if $line =~ /^\s*(global|local):/;
if ($line =~ /^\s*${prefix}_(\d+\.\d+\.\d+)\s*{\s*$/) {
if (defined $vers) {
die "malformed syms file";
}
$vers = $1;
} elsif ($line =~ /\s*}\s*;\s*$/) {
if (defined $prevvers) {
die "malformed syms file";
}
$prevvers = $vers;
$vers = undef;
} elsif ($line =~ /\s*}\s*${prefix}_(\d+\.\d+\.\d+)\s*;\s*$/) {
if ($1 ne $prevvers) {
die "malformed syms file $1 != $vers";
}
$prevvers = $vers;
$vers = undef;
} elsif ($line =~ /\s*(\w+)\s*;\s*$/) {
$$apisref{$1} = {};
$$apisref{$1}->{vers} = $vers;
$$apisref{$1}->{file} = $$filenames{$1};
} else {
die "unexpected data $line\n";
}
}
close FILE;
}
my %apis;
# Get the list of all public APIs and their corresponding version
parseSymsFile(\%apis, "LIBVIRT", $symslibvirt, "$srcdir/../docs/libvirt-api.xml");
# And the same for the QEMU specific APIs
parseSymsFile(\%apis, "LIBVIRT_QEMU", $symsqemu, "$srcdir/../docs/libvirt-qemu-api.xml");
# And the same for the LXC specific APIs
parseSymsFile(\%apis, "LIBVIRT_LXC", $symslxc, "$srcdir/../docs/libvirt-lxc-api.xml");
# Some special things which aren't public APIs,
# but we want to report
$apis{virConnectSupportsFeature}->{vers} = "0.3.2";
$apis{virDomainMigratePrepare}->{vers} = "0.3.2";
$apis{virDomainMigratePerform}->{vers} = "0.3.2";
$apis{virDomainMigrateFinish}->{vers} = "0.3.2";
$apis{virDomainMigratePrepare2}->{vers} = "0.5.0";
$apis{virDomainMigrateFinish2}->{vers} = "0.5.0";
$apis{virDomainMigratePrepareTunnel}->{vers} = "0.7.2";
$apis{virDomainMigrateBegin3}->{vers} = "0.9.2";
$apis{virDomainMigratePrepare3}->{vers} = "0.9.2";
$apis{virDomainMigratePrepareTunnel3}->{vers} = "0.9.2";
$apis{virDomainMigratePerform3}->{vers} = "0.9.2";
$apis{virDomainMigrateFinish3}->{vers} = "0.9.2";
$apis{virDomainMigrateConfirm3}->{vers} = "0.9.2";
$apis{virDomainMigrateBegin3Params}->{vers} = "1.1.0";
$apis{virDomainMigratePrepare3Params}->{vers} = "1.1.0";
$apis{virDomainMigratePrepareTunnel3Params}->{vers} = "1.1.0";
$apis{virDomainMigratePerform3Params}->{vers} = "1.1.0";
$apis{virDomainMigrateFinish3Params}->{vers} = "1.1.0";
$apis{virDomainMigrateConfirm3Params}->{vers} = "1.1.0";
# Now we want to get the mapping between public APIs
# and driver struct fields. This lets us later match
# update the driver impls with the public APis.
my $line;
# Group name -> hash of APIs { fields -> api name }
my %groups;
my $ingrp;
foreach my $drivertable (@drivertable) {
open FILE, "<$drivertable"
or die "cannot read $drivertable: $!";
while (defined($line = <FILE>)) {
if ($line =~ /struct _(vir\w*Driver)/) {
my $grp = $1;
if ($grp ne "virStateDriver" &&
$grp ne "virStreamDriver") {
$ingrp = $grp;
$groups{$ingrp} = { apis => {}, drivers => {} };
}
} elsif ($ingrp) {
if ($line =~ /^\s*vir(?:Drv)(\w+)\s+(\w+);\s*$/) {
my $field = $2;
my $name = $1;
my $api;
if (exists $apis{"vir$name"}) {
$api = "vir$name";
} elsif ($name =~ /\w+(Open|Close|URIProbe)/) {
next;
} else {
die "driver $name does not have a public API";
}
$groups{$ingrp}->{apis}->{$field} = $api;
} elsif ($line =~ /};/) {
$ingrp = undef;
}
}
}
close FILE;
}
# Finally, we read all the primary driver files and extract
# the driver API tables from each one.
foreach my $src (@srcs) {
open FILE, "<$src" or
die "cannot read $src: $!";
my $groups_regex = join("|", keys %groups);
$ingrp = undef;
my $impl;
while (defined($line = <FILE>)) {
if (!$ingrp) {
# skip non-matching lines early to save time
next if not $line =~ /$groups_regex/;
if ($line =~ /^\s*(?:static\s+)?($groups_regex)\s+(\w+)\s*=\s*{/ ||
$line =~ /^\s*(?:static\s+)?($groups_regex)\s+NAME\(\w+\)\s*=\s*{/) {
$ingrp = $1;
$impl = $src;
if ($impl =~ m,.*/node_device_(\w+)\.c,) {
$impl = $1;
} else {
$impl =~ s,.*/(\w+?)_((\w+)_)?(\w+)\.c,$1,;
}
if ($groups{$ingrp}->{drivers}->{$impl}) {
die "Group $ingrp already contains $impl";
}
$groups{$ingrp}->{drivers}->{$impl} = {};
}
} else {
if ($line =~ m!\s*\.(\w+)\s*=\s*(\w+)\s*,?\s*(?:/\*\s*(\d+\.\d+\.\d+)\s*\*/\s*)?$!) {
my $api = $1;
my $meth = $2;
my $vers = $3;
next if $api eq "no" || $api eq "name";
die "Method $meth in $src is missing version" unless defined $vers || $api eq "connectURIProbe";
die "Driver method for $api is NULL in $src" if $meth eq "NULL";
if (!exists($groups{$ingrp}->{apis}->{$api})) {
next if $api =~ /\w(Open|Close|URIProbe)/;
die "Found unexpected method $api in $ingrp\n";
}
$groups{$ingrp}->{drivers}->{$impl}->{$api} = $vers;
if ($api eq "domainMigratePrepare" ||
$api eq "domainMigratePrepare2" ||
$api eq "domainMigratePrepare3") {
$groups{$ingrp}->{drivers}->{$impl}->{"domainMigrate"} = $vers
unless $groups{$ingrp}->{drivers}->{$impl}->{"domainMigrate"};
}
} elsif ($line =~ /}/) {
$ingrp = undef;
}
}
}
close FILE;
}
# The '.open' driver method is used for 3 public APIs, so we
# have a bit of manual fixup todo with the per-driver versioning
# and support matrix
$groups{virHypervisorDriver}->{apis}->{"openAuth"} = "virConnectOpenAuth";
$groups{virHypervisorDriver}->{apis}->{"openReadOnly"} = "virConnectOpenReadOnly";
$groups{virHypervisorDriver}->{apis}->{"domainMigrate"} = "virDomainMigrate";
my $openAuthVers = (0 * 1000 * 1000) + (4 * 1000) + 0;
foreach my $drv (keys %{$groups{"virHypervisorDriver"}->{drivers}}) {
my $openVersStr = $groups{"virHypervisorDriver"}->{drivers}->{$drv}->{"connectOpen"};
my $openVers;
if ($openVersStr =~ /(\d+)\.(\d+)\.(\d+)/) {
$openVers = ($1 * 1000 * 1000) + ($2 * 1000) + $3;
}
# virConnectOpenReadOnly always matches virConnectOpen version
$groups{"virHypervisorDriver"}->{drivers}->{$drv}->{"connectOpenReadOnly"} =
$groups{"virHypervisorDriver"}->{drivers}->{$drv}->{"connectOpen"};
# virConnectOpenAuth is always 0.4.0 if the driver existed
# before this time, otherwise it matches the version of
# the driver's virConnectOpen entry
if ($openVersStr eq "Y" ||
$openVers >= $openAuthVers) {
$groups{"virHypervisorDriver"}->{drivers}->{$drv}->{"connectOpenAuth"} = $openVersStr;
} else {
$groups{"virHypervisorDriver"}->{drivers}->{$drv}->{"connectOpenAuth"} = "0.4.0";
}
}
# Another special case for the virDomainCreateLinux which was replaced
# with virDomainCreateXML
$groups{virHypervisorDriver}->{apis}->{"domainCreateLinux"} = "virDomainCreateLinux";
my $createAPIVers = (0 * 1000 * 1000) + (0 * 1000) + 3;
foreach my $drv (keys %{$groups{"virHypervisorDriver"}->{drivers}}) {
my $createVersStr = $groups{"virHypervisorDriver"}->{drivers}->{$drv}->{"domainCreateXML"};
next unless defined $createVersStr;
my $createVers;
if ($createVersStr =~ /(\d+)\.(\d+)\.(\d+)/) {
$createVers = ($1 * 1000 * 1000) + ($2 * 1000) + $3;
}
# virCreateLinux is always 0.0.3 if the driver existed
# before this time, otherwise it matches the version of
# the driver's virCreateXML entry
if ($createVersStr eq "Y" ||
$createVers >= $createAPIVers) {
$groups{"virHypervisorDriver"}->{drivers}->{$drv}->{"domainCreateLinux"} = $createVersStr;
} else {
$groups{"virHypervisorDriver"}->{drivers}->{$drv}->{"domainCreateLinux"} = "0.0.3";
}
}
# Finally we generate the HTML file with the tables
print <<EOF;
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<body class="hvsupport">
<h1>libvirt API support matrix</h1>
<ul id="toc"></ul>
<p>
This page documents which <a href="html/">libvirt calls</a> work on
which libvirt drivers / hypervisors, and which version the API appeared
in.
</p>
EOF
foreach my $grp (sort { $a cmp $b } keys %groups) {
print "<h2><a name=\"$grp\">", $groupheaders{$grp}, "</a></h2>\n";
print <<EOF;
<table class="top_table">
<thead>
<tr>
<th>API</th>
<th>Version</th>
EOF
foreach my $drv (sort { $a cmp $b } keys %{$groups{$grp}->{drivers}}) {
print " <th>$drv</th>\n";
}
print <<EOF;
</tr>
</thead>
<tbody>
EOF
my $row = 0;
foreach my $field (sort {
$groups{$grp}->{apis}->{$a}
cmp
$groups{$grp}->{apis}->{$b}
} keys %{$groups{$grp}->{apis}}) {
my $api = $groups{$grp}->{apis}->{$field};
my $vers = $apis{$api}->{vers};
my $htmlgrp = $apis{$api}->{file};
print <<EOF;
<tr>
<td>
EOF
if (defined $htmlgrp) {
print <<EOF;
<a href=\"html/libvirt-$htmlgrp.html#$api\">$api</a>
EOF
} else {
print $api;
}
print <<EOF;
</td>
<td>$vers</td>
EOF
foreach my $drv (sort {$a cmp $b } keys %{$groups{$grp}->{drivers}}) {
if (exists $groups{$grp}->{drivers}->{$drv}->{$field}) {
print "<td>", $groups{$grp}->{drivers}->{$drv}->{$field}, "</td>\n";
} else {
print "<td></td>\n";
}
}
print <<EOF;
</tr>
EOF
$row++;
if (($row % 15) == 0) {
print <<EOF;
<tr>
<th>API</th>
<th>Version</th>
EOF
foreach my $drv (sort { $a cmp $b } keys %{$groups{$grp}->{drivers}}) {
print " <th>$drv</th>\n";
}
print <<EOF;
</tr>
EOF
}
}
print <<EOF;
</tbody>
</table>
EOF
}
print <<EOF;
</body>
</html>
EOF

View File

@@ -2,9 +2,20 @@
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<script type="text/javascript" src="js/jquery-3.1.1.min.js"> </script>
<script type="text/javascript" src="js/moment.min.js"> </script>
<script type="text/javascript" src="js/jquery.rss.min.js"> </script>
<script type="text/javascript">
<!--
window.addEventListener("load", function() { fetchRSS() });
jQuery(function($) {
$("#planet").rss("http://planet.virt-tools.org/atom.xml", {
ssl: true,
layoutTemplate: '<dl>{entries}</dl>',
entryTemplate: '<dt><a href="{url}">{title}</a></dt><dd>by {author} on {date}</li>',
dateFormat: 'DD MMM YYYY'
})
})
// -->
</script>
</head>
@@ -55,12 +66,9 @@
<a href="formatstorageencryption.html">storage encryption</a>,
<a href="formatcaps.html">capabilities</a>,
<a href="formatdomaincaps.html">domain capabilities</a>,
<a href="formatstoragecaps.html">storage pool capabilities</a>,
<a href="formatnode.html">node devices</a>,
<a href="formatsecret.html">secrets</a>,
<a href="formatsnapshot.html">snapshots</a>,
<a href="formatcheckpoint.html">checkpoints</a>,
<a href="formatbackup.html">backup jobs</a></dd>
<a href="formatsnapshot.html">snapshots</a></dd>
<dt><a href="http://wiki.libvirt.org">Wiki</a></dt>
<dd>Read further community contributed content</dd>
</dl>

1266
docs/index.py Executable file

File diff suppressed because it is too large Load Diff

View File

@@ -0,0 +1,213 @@
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<body>
<h1>Out of memory testing</h1>
<ul id="toc"></ul>
<p>
This page describes how to use the test suite todo out of memory
testing.
</p>
<h2>Building with OOM testing</h2>
<p>
Since OOM testing requires hooking into the malloc APIs, it is
not enabled by default. The flag <code>--enable-test-oom</code>
must be given to <code>configure</code>. When this is done the
libvirt allocation APIs will have some hooks enabled.
</p>
<pre>
$ ./configure --enable-test-oom
</pre>
<h2><a id="basicoom">Basic OOM testing support</a></h2>
<p>
The first step in validating OOM usage is to run a test suite
with full OOM testing enabled. This is done by setting the
<code>VIR_TEST_OOM=1</code> environment variable. The way this
works is that it runs the test once normally to "prime" any
static memory allocations. Then it runs it once more counting
the total number of memory allocations. Then it runs it in a
loop failing a different memory allocation each time. For every
memory allocation failure triggered, it expects the test case
to return an error. OOM testing is quite slow requiring each
test case to be executed O(n) times, where 'n' is the total
number of memory allocations. This results in a total number
of memory allocations of '(n * (n + 1) ) / 2'
</p>
<pre>
$ VIR_TEST_OOM=1 ./qemuxml2argvtest
1) QEMU XML-2-ARGV minimal ... OK
Test OOM for nalloc=42 .......................................... OK
2) QEMU XML-2-ARGV minimal-s390 ... OK
Test OOM for nalloc=28 ............................ OK
3) QEMU XML-2-ARGV machine-aliases1 ... OK
Test OOM for nalloc=38 ...................................... OK
4) QEMU XML-2-ARGV machine-aliases2 ... OK
Test OOM for nalloc=38 ...................................... OK
5) QEMU XML-2-ARGV machine-core-on ... OK
Test OOM for nalloc=37 ..................................... OK
...snip...
</pre>
<p>
In this output, the first line shows the normal execution and
the test number, and the second line shows the total number
of memory allocations from that test case.
</p>
<h3><a id="valgrind">Tracking failures with valgrind</a></h3>
<p>
The test suite should obviously *not* crash during OOM testing.
If it does crash, then to assist in tracking down the problem
it is worth using valgrind and only running a single test case.
For example, supposing test case 5 crashed. Then re-run the
test with
</p>
<pre>
$ VIR_TEST_OOM=1 VIR_TEST_RANGE=5 ../run valgrind ./qemuxml2argvtest
...snip...
5) QEMU XML-2-ARGV machine-core-on ... OK
Test OOM for nalloc=37 ..................................... OK
...snip...
</pre>
<p>
Valgrind should report the cause of the crash - for example a
double free or use of uninitialized memory or NULL pointer
access.
</p>
<h3><a id="stacktraces">Tracking failures with stack traces</a></h3>
<p>
With some really difficult bugs valgrind is not sufficient to
identify the cause. In this case, it is useful to identify the
precise allocation which was failed, to allow the code path
to the error to be traced. The <code>VIR_TEST_OOM</code>
env variable can be given a range of memory allocations to
test. So if a test case has 150 allocations, it can be told
to only test allocation numbers 7-10. The <code>VIR_TEST_OOM_TRACE</code>
variable can be used to print out stack traces.
</p>
<pre>
$ VIR_TEST_OOM_TRACE=2 VIR_TEST_OOM=1:7-10 VIR_TEST_RANGE=5 \
../run valgrind ./qemuxml2argvtest
5) QEMU XML-2-ARGV machine-core-on ... OK
Test OOM for nalloc=37 !virAllocN
/home/berrange/src/virt/libvirt/src/util/viralloc.c:180
virDomainDefParseXML
/home/berrange/src/virt/libvirt/src/conf/domain_conf.c:11786 (discriminator 1)
virDomainDefParseNode
/home/berrange/src/virt/libvirt/src/conf/domain_conf.c:12677
virDomainDefParse
/home/berrange/src/virt/libvirt/src/conf/domain_conf.c:12621
testCompareXMLToArgvFiles
/home/berrange/src/virt/libvirt/tests/qemuxml2argvtest.c:107
virtTestRun
/home/berrange/src/virt/libvirt/tests/testutils.c:266
mymain
/home/berrange/src/virt/libvirt/tests/qemuxml2argvtest.c:388 (discriminator 2)
virtTestMain
/home/berrange/src/virt/libvirt/tests/testutils.c:791
__libc_start_main
??:?
_start
??:?
!virAlloc
/home/berrange/src/virt/libvirt/src/util/viralloc.c:133
virDomainDiskDefParseXML
/home/berrange/src/virt/libvirt/src/conf/domain_conf.c:4790
virDomainDefParseXML
/home/berrange/src/virt/libvirt/src/conf/domain_conf.c:11797
virDomainDefParseNode
/home/berrange/src/virt/libvirt/src/conf/domain_conf.c:12677
virDomainDefParse
/home/berrange/src/virt/libvirt/src/conf/domain_conf.c:12621
testCompareXMLToArgvFiles
/home/berrange/src/virt/libvirt/tests/qemuxml2argvtest.c:107
virtTestRun
/home/berrange/src/virt/libvirt/tests/testutils.c:266
mymain
/home/berrange/src/virt/libvirt/tests/qemuxml2argvtest.c:388 (discriminator 2)
virtTestMain
/home/berrange/src/virt/libvirt/tests/testutils.c:791
__libc_start_main
??:?
_start
??:?
!virAllocN
/home/berrange/src/virt/libvirt/src/util/viralloc.c:180
virXPathNodeSet
/home/berrange/src/virt/libvirt/src/util/virxml.c:609
virDomainDefParseXML
/home/berrange/src/virt/libvirt/src/conf/domain_conf.c:11805
virDomainDefParseNode
/home/berrange/src/virt/libvirt/src/conf/domain_conf.c:12677
virDomainDefParse
/home/berrange/src/virt/libvirt/src/conf/domain_conf.c:12621
testCompareXMLToArgvFiles
/home/berrange/src/virt/libvirt/tests/qemuxml2argvtest.c:107
virtTestRun
/home/berrange/src/virt/libvirt/tests/testutils.c:266
mymain
/home/berrange/src/virt/libvirt/tests/qemuxml2argvtest.c:388 (discriminator 2)
virtTestMain
/home/berrange/src/virt/libvirt/tests/testutils.c:791
__libc_start_main
??:?
_start
??:?
!virAllocN
/home/berrange/src/virt/libvirt/src/util/viralloc.c:180
virDomainDefParseXML
/home/berrange/src/virt/libvirt/src/conf/domain_conf.c:11808 (discriminator 1)
virDomainDefParseNode
/home/berrange/src/virt/libvirt/src/conf/domain_conf.c:12677
virDomainDefParse
/home/berrange/src/virt/libvirt/src/conf/domain_conf.c:12621
testCompareXMLToArgvFiles
/home/berrange/src/virt/libvirt/tests/qemuxml2argvtest.c:107
virtTestRun
/home/berrange/src/virt/libvirt/tests/testutils.c:266
mymain
/home/berrange/src/virt/libvirt/tests/qemuxml2argvtest.c:388 (discriminator 2)
virtTestMain
/home/berrange/src/virt/libvirt/tests/testutils.c:791
__libc_start_main
??:?
_start
??:?
</pre>
<h3><a id="noncrash">Non-crash related problems</a></h3>
<p>
Not all memory allocation bugs result in code crashing. Sometimes
the code will be silently ignoring the allocation failure, resulting
in incorrect data being produced. For example the XML parser may
mistakenly treat an allocation failure as indicating that an XML
attribute was not set in the input document. It is hard to identify
these problems from the test suite automatically. For this, the
test suites should be run with <code>VIR_TEST_DEBUG=1</code> set
and then stderr analysed for any unexpected data. For example,
the XML conversion may show an embedded "(null)" literal, or the
test suite might complain about missing elements / attributes
in the actual vs expected data. These are all signs of bugs in
OOM handling. In the future the OOM tests will be enhanced to
validate that an error VIR_ERR_NO_MEMORY is returned for each
allocation failed, rather than some other error.
</p>
</body>
</html>

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@@ -539,6 +539,13 @@ C &lt;-- |32| 8 | 1 | 3 | 1 | 1 | 0 | .o.oOo | &lt;-- S (reply)
be part of the underlying server.
</dd>
<dt><code>virNetServerMDNSPtr</code> (virnetservermdns.h)</dt>
<dd>The virNetServerMDNS APIs are used to advertise a server
across the local network, enabling clients to automatically
detect the existence of remote services. This is done by
interfacing with the Avahi mDNS advertisement service.
</dd>
<dt><code>virNetServerClientPtr</code> (virnetserverclient.h)</dt>
<dd>The virNetServerClient APIs are used to manage I/O related
to a single client network connection. It handles initial

4
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11
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@@ -0,0 +1,11 @@
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return this}})(jQuery);

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@@ -1,141 +0,0 @@
"use strict";
function pageload() {
window.addEventListener("scroll", function(e){
var distanceY = window.pageYOffset || document.documentElement.scrollTop;
var shrinkOn = 94;
var home = document.getElementById("home");
var links = document.getElementById("jumplinks");
var search = document.getElementById("search");
var body = document.getElementById("body");
if (distanceY > shrinkOn) {
if (home.className != "navhide") {
body.className = "navhide";
home.className = "navhide";
links.className = "navhide";
search.className = "navhide";
}
} else {
if (home.className == "navhide") {
body.className = "";
home.className = "";
links.className = "";
search.className = "";
}
}
});
/* Setting this class makes the advanced search options visible */
var advancedSearch = document.getElementById("advancedsearch");
advancedSearch.className = "advancedsearch";
var simpleSearch = document.getElementById("simplesearch");
simpleSearch.addEventListener("submit", advancedsearch);
}
function advancedsearch(e) {
e.preventDefault();
e.stopPropagation();
var form = document.createElement("form");
form.setAttribute("method", "get");
var newq = document.createElement("input");
newq.setAttribute("type", "hidden");
form.appendChild(newq);
var q = document.getElementById("searchq");
var whats = document.getElementsByName("what");
var what = "website";
for (var i = 0; i < whats.length; i++) {
if (whats[i].checked) {
what = whats[i].value;
break;
}
}
if (what == "website") {
form.setAttribute("action", "https://google.com/search");
newq.setAttribute("name", "q");
newq.value = "site:libvirt.org " + q.value;
} else if (what == "wiki") {
form.setAttribute("action", "https://wiki.libvirt.org/index.php");
newq.setAttribute("name", "search");
newq.value = q.value;
} else if (what == "devs") {
form.setAttribute("action", "https://google.com/search");
newq.setAttribute("name", "q");
newq.value = "site:redhat.com/archives/libvir-list " + q.value;
} else if (what == "users") {
form.setAttribute("action", "https://google.com/search");
newq.setAttribute("name", "q");
newq.value = "site:redhat.com/archives/libvirt-users " + q.value;
}
document.body.appendChild(form);
form.submit();
return false;
}
function fetchRSS() {
if (document.location.protocol == "file:")
return;
var planet = document.getElementById("planet");
if (planet === null)
return;
var req = new XMLHttpRequest();
req.open("GET", "https://planet.virt-tools.org/atom.xml");
req.setRequestHeader("Accept", "application/atom+xml, text/xml");
req.onerror = function(e) {
if (this.statusText != "")
console.error(this);
};
req.onload = function(e) {
if (this.readyState !== 4)
return;
if (this.status != 200) {
console.error(this.statusText);
return;
}
if (this.responseXML === null) {
console.error("Atom response is not an XML");
return;
}
var dl = document.createElement("dl");
var dateOpts = { day: "numeric", month: "short", year: "numeric"};
var entries = this.responseXML.querySelectorAll("feed > entry:not(:nth-of-type(1n+5))");
entries.forEach(function(e) {
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var title = e.querySelector("title").textContent;
var updated = e.querySelector("updated").textContent;
var link = e.querySelector("link").attributes.href.textContent;
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a.innerText = title;
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dt.appendChild(a);
dl.appendChild(dt);
var date = new Date(updated);
date = date.toLocaleDateString("default", dateOpts);
var dd = document.createElement("dd");
dd.innerText = ` by ${name} on ${date}`;
dl.appendChild(dd);
});
planet.appendChild(dl);
};
req.send();
}

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@@ -1,38 +0,0 @@
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<body class="docs">
<h2>Knowledge base</h2>
<div class="panel">
<dl>
<dt><a href="kbase/locking.html">Disk locking</a></dt>
<dd>Ensuring exclusive guest access to disks with
<a href="kbase/locking-lockd.html">virtlockd</a> or
<a href="kbase/locking-sanlock.html">Sanlock</a></dd>
<dt><a href="kbase/secureusage.html">Secure usage</a></dt>
<dd>Secure usage of the libvirt APIs</dd>
<dt><a href="kbase/launch_security_sev.html">Launch security</a></dt>
<dd>Securely launching VMs with AMD SEV</dd>
<dt><a href="kbase/domainstatecapture.html">Domain state
capture</a></dt>
<dd>Comparison between different methods of capturing domain
state</dd>
<dt><a href="kbase/rpm-deployment.html">RPM deployment</a></dt>
<dd>Explanation of the different RPM packages and illustration of
which to pick for installation</dd>
<dt><a href="kbase/backing_chains.html">Backing chain management</a></dt>
<dd>Explanation of how disk backing chain specification impacts libvirt's
behaviour and basic troubleshooting steps of disk problems.</dd>
</dl>
</div>
<br class="clear"/>
</body>
</html>

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@@ -1,185 +0,0 @@
=================
Disk image chains
=================
Modern disk image formats allow users to create an overlay on top of an
existing image which will be the target of the new guest writes. This allows us
to do snapshots of the disk state of a VM efficiently. The following text
describes how libvirt manages such image chains and some problems which can
occur. Note that many of the cases mentioned below are currently only relevant
for the qemu driver.
.. contents::
Domain XML image and chain specification
========================================
Disk image chains can be partially or fully configured in the domain XML. The
basic approach is to use the ``<backingStore>`` elements in the configuration.
The ``<backingStore>`` elements present in the live VM xml represent the actual
topology that libvirt knows of.
Basic disk setup
----------------
Any default configuration or example usually refers only to the top (active)
image of the backing chain.
::
<disk type='file' device='disk'>
<driver name='qemu' type='qcow2'/>
<source file='/tmp/pull4.qcow2'/>
<target dev='vda' bus='virtio'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x0a' function='0x0'/>
</disk>
This configuration will prompt libvirt to detect the backing image of the source
image and recursively do the same thing until the end of the chain.
Importance of properly setup backing chain
------------------------------------------
The disk image locations are used by libvirt to properly setup the security
system used on the host so that the hypervisor can access the files and possibly
also directly to configure the hypervisor to use the appropriate images. Thus
it's important to properly setup the formats and paths of the backing images.
Image detection caveats
-----------------------
Detection of the backing chain requires libvirt to read and understand the
``backing file`` field recorded in the image metadata and also being able to
recurse and read the backing file. Due to security implications libvirt
will not attempt to detect the format of the backing image if the image metadata
doesn't contain it.
Libvirt also might lack support for a network disk storage technology and thus
may be unable to visit and detect backing chains on such storage. This may
result in the backing chain present in the live XML to look incomplete or some
operations not being possible. To prevent this it's possible to specify the
image metadata explicitly in the XML.
Advanced backing chain specifications
-------------------------------------
To specify the topology of disk images explicitly the following XML
specification can be used:
::
<disk type='file' device='disk'>
<driver name='qemu' type='qcow2'/>
<source file='/tmp/pull4.qcow2'/>
<backingStore type='file'>
<format type='qcow2'/>
<source file='/tmp/pull3.qcow2'/>
<backingStore type='file'>
<format type='qcow2'/>
<source file='/tmp/pull2.qcow2'/>
<backingStore type='file'>
<format type='qcow2'/>
<source file='/tmp/pull1.qcow2'/>
<backingStore type='file'>
<format type='qcow2'/>
<source file='/tmp/pull0.qcow2'/>
<backingStore/>
</backingStore>
</backingStore>
</backingStore>
</backingStore>
<target dev='vda' bus='virtio'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x0a' function='0x0'/>
</disk>
This makes libvirt follow the settings as configured in the XML. Note that this
is supported only when the https://libvirt.org/formatdomaincaps.html#featureBackingStoreInput
capability is present.
An empty ``<backingStore/>`` element signals the end of the chain. Using this
will prevent libvirt or qemu from probing the backing chain.
Note that it's also possible to partially specify the chain in the XML but omit
the terminating element. This will result into probing from the last specified
``<backingStore>``
Manual image creation
=====================
When creating disk images manually outside of libvirt it's important to create
them properly so that they work with libvirt as expected. The created disk
images must contain the format of the backing image in the metadata. This
means that the **-F** parameter of ``qemu-img`` must always be used.
Troubleshooting
===============
A few common problems which occur when managing chains of disk images.
VM refuses to start due to misconfigured backing store format
-------------------------------------------------------------
This problem happens on VMs where the backing chain was created manually outside
of libvirt and can have multiple symptoms:
- permission denied error reported on a backing image
- ``format of backing image '%s' of image '%s' was not specified in the image metadata`` error reported
- disk image looking corrupt inside the guest
The cause of the above problem is that the image metadata does not record the
format of the backing image along with the location of the image. When the
format is not specified libvirt or qemu would have to do image format probing
which is insecure to do as a malicious guest could rewrite the header of the
disk leading to access of host files. Libvirt thus does not try to assume
the format of the backing image. The following command can be used to check if
the image has a backing image format specified:
::
$ qemu-img info /tmp/copy4.qcow2
image: /tmp/copy4.qcow2
file format: qcow2
virtual size: 10 MiB (10485760 bytes)
disk size: 196 KiB
cluster_size: 65536
backing file: copy3.qcow2 (actual path: /tmp/copy3.qcow2)
backing file format: qcow2
Format specific information:
compat: 1.1
lazy refcounts: false
refcount bits: 16
corrupt: false
If the ``backing file format:`` field is missing above the format was not
specified properly. The image can be fixed by the following command:
::
qemu-img rebase -f $IMAGE_FORMAT -F $BACKING_IMAGE_FORMAT -b $BACKING_IMAGE_PATH $IMAGE_PATH
It is important to fill out ``$BACKING_IMAGE_FORMAT`` and ``$IMAGE_FORMAT``
properly. ``$BACKING_IMAGE_PATH`` should be specified as a full absolute path.
If relative referencing of the backing image is desired, the path must be
relative to the location of image described by ``$IMAGE_PATH``.
Missing images reported after after moving disk images into a different path
----------------------------------------------------------------------------
The path to the backing image which is recorded in the image metadata often
contains a full path to the backing image. This is the default libvirt-created
image configuration. When such images are moved to a different location the
top image will no longer point to the correct image.
To fix such issue you can either fully specify the image chain in the domain XML
as pointed out above or the following ``qemu-img`` command can be used:
::
qemu-img rebase -u -f $IMAGE_FORMAT -F $BACKING_IMAGE_FORMAT -b $BACKING_IMAGE_PATH $IMAGE_PATH
It is important to fill out ``$BACKING_IMAGE_FORMAT`` and ``$IMAGE_FORMAT``
properly. ``$BACKING_IMAGE_PATH`` should be specified as a full absolute path.
If relative referencing of the backing image is desired, the path must be
relative to the location of image described by ``$IMAGE_PATH``.

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@@ -1,255 +0,0 @@
==================================
Domain state capture using Libvirt
==================================
.. contents::
In order to aid application developers to choose which operations best
suit their needs, this page compares the different means for capturing
state related to a domain managed by libvirt.
The information here is primarily geared towards capturing the state of
an active domain. Capturing the state of an inactive domain essentially
amounts to copying the contents of guest disks, followed by a fresh boot
of the same domain configuration with disks restored back to that saved
state.
State capture trade-offs
========================
One of the features made possible with virtual machines is live
migration -- transferring all state related to the guest from one host
to another with minimal interruption to the guest's activity. In this
case, state includes domain memory (including register and device
contents), and domain storage (whether the guest's view of the disks are
backed by local storage on the host, or by the hypervisor accessing
shared storage over a network). A clever observer will then note that if
all state is available for live migration, then there is nothing
stopping a user from saving some or all of that state at a given point
of time in order to be able to later rewind guest execution back to the
state it previously had. The astute reader will also realize that state
capture at any level requires that the data must be stored and managed
by some mechanism. This processing might fit in a single file, or more
likely require a chain of related files, and may require synchronization
with third-party tools built around managing the amount of data
resulting from capturing the state of multiple guests that each use
multiple disks.
There are several libvirt APIs associated with capturing the state of a
guest, which can later be used to rewind that guest to the conditions it
was in earlier. The following is a list of trade-offs and differences
between the various facets that affect capturing domain state for active
domains:
Duration
Capturing state can be a lengthy process, so while the captured state
ideally represents an atomic point in time corresponding to something
the guest was actually executing, capturing state tends to focus on
minimizing guest downtime while performing the rest of the state
capture in parallel with guest execution. Some interfaces require
up-front preparation (the state captured is not complete until the
API ends, which may be some time after the command was first
started), while other interfaces track the state when the command was
first issued, regardless of the time spent in capturing the rest of
the state. Also, time spent in state capture may be longer than the
time required for live migration, when state must be duplicated
rather than shared.
Amount of state
For an online guest, there is a choice between capturing the guest's
memory (all that is needed during live migration when the storage is
already shared between source and destination), the guest's disk
state (all that is needed if there are no pending guest I/O
transactions that would be lost without the corresponding memory
state), or both together. Reverting to partial state may still be
viable, but typically, booting from captured disk state without
corresponding memory is comparable to rebooting a machine that had
power cut before I/O could be flushed. Guests may need to use proper
journaling methods to avoid problems when booting from partial state.
Quiescing of data
Even if a guest has no pending I/O, capturing disk state may catch
the guest at a time when the contents of the disk are inconsistent.
Cooperating with the guest to perform data quiescing is an optional
step to ensure that captured disk state is fully consistent without
requiring additional memory state, rather than just crash-consistent.
But guest cooperation may also have time constraints, where the guest
can rightfully panic if there is too much downtime while I/O is
frozen.
Quantity of files
When capturing state, some approaches store all state within the same
file (internal), while others expand a chain of related files that
must be used together (external), for more files that a management
application must track.
Impact to guest definition
Capturing state may require temporary changes to the guest
definition, such as associating new files into the domain definition.
While state capture should never impact the running guest, a change
to the domain's active XML may have impact on other host operations
being performed on the domain.
Third-party integration
When capturing state, there are tradeoffs to how much of the process
must be done directly by the hypervisor, and how much can be
off-loaded to third-party software. Since capturing state is not
instantaneous, it is essential that any third-party integration see
consistent data even if the running guest continues to modify that
data after the point in time of the capture.
Full vs. incremental
When periodically repeating the action of state capture, it is useful
to minimize the amount of state that must be captured by exploiting
the relation to a previous capture, such as focusing only on the
portions of the disk that the guest has modified in the meantime.
Some approaches are able to take advantage of checkpoints to provide
an incremental backup, while others are only capable of a full backup
even if that means re-capturing unchanged portions of the disk.
Local vs. remote
Domains that completely use remote storage may only need some
mechanism to keep track of guest memory state while using external
means to manage storage. Still, hypervisor and guest cooperation to
ensure points in time when no I/O is in flight across the network can
be important for properly capturing disk state.
Network latency
Whether it's domain storage or saving domain state into remote
storage, network latency has an impact on snapshot data. Having
dedicated network capacity, bandwidth, or quality of service levels
may play a role, as well as planning for how much of the backup
process needs to be local.
An example of the various facets in action is migration of a running
guest. In order for the guest to be able to resume on the destination at
the same place it left off at the source, the hypervisor has to get to a
point where execution on the source is stopped, the last remaining
changes occurring since the migration started are then transferred, and
the guest is started on the target. The management software thus must
keep track of the starting point and any changes since the starting
point. These last changes are often referred to as dirty page tracking
or dirty disk block bitmaps. At some point in time during the migration,
the management software must freeze the source guest, transfer the dirty
data, and then start the guest on the target. This period of time must
be minimal. To minimize overall migration time, one is advised to use a
dedicated network connection with a high quality of service.
Alternatively saving the current state of the running guest can just be
a point in time type operation which doesn't require updating the "last
vestiges" of state prior to writing out the saved state file. The state
file is the point in time of whatever is current and may contain
incomplete data which if used to restart the guest could cause confusion
or problems because some operation wasn't completed depending upon where
in time the operation was commenced.
State capture APIs
==================
With those definitions, the following libvirt APIs related to state
capture have these properties:
`virDomainManagedSave <../html/libvirt-libvirt-domain.html#virDomainManagedSave>`__
This API saves guest memory, with libvirt managing all of the saved
state, then stops the guest. While stopped, the disks can be copied
by a third party. However, since any subsequent restart of the guest
by libvirt API will restore the memory state (which typically only
works if the disk state is unchanged in the meantime), and since it
is not possible to get at the memory state that libvirt is managing,
this is not viable as a means for rolling back to earlier saved
states, but is rather more suited to situations such as suspending a
guest prior to rebooting the host in order to resume the guest when
the host is back up. This API also has a drawback of potentially long
guest downtime, and therefore does not lend itself well to live
backups.
`virDomainSave <../html/libvirt-libvirt-domain.html#virDomainSave>`__
This API is similar to virDomainManagedSave(), but moves the burden
on managing the stored memory state to the user. As such, the user
can now couple saved state with copies of the disks to perform a
revert to an arbitrary earlier saved state. However, changing who
manages the memory state does not change the drawback of potentially
long guest downtime when capturing state.
`virDomainSnapshotCreateXML <../html/libvirt-libvirt-domain-snapshot.html#virDomainSnapshotCreateXML>`__
This API wraps several approaches for capturing guest state, with a
general premise of creating a snapshot (where the current guest
resources are frozen in time and a new wrapper layer is opened for
tracking subsequent guest changes). It can operate on both offline
and running guests, can choose whether to capture the state of
memory, disk, or both when used on a running guest, and can choose
between internal and external storage for captured state. However, it
is geared towards post-event captures (when capturing both memory and
disk state, the disk state is not captured until all memory state has
been collected first). Using QEMU as the hypervisor, internal
snapshots currently have lengthy downtime that is incompatible with
freezing guest I/O, but external snapshots are quick when memory
contents are not also saved. Since creating an external snapshot
changes which disk image resource is in use by the guest, this API
can be coupled with
`virDomainBlockCommit() <html/libvirt-libvirt-domain.html#virDomainBlockCommit>`__
to restore things back to the guest using its original disk image,
where a third-party tool can read the backing file prior to the live
commit. See also the `XML details <formatsnapshot.html>`__ used with
this command.
`virDomainFSFreeze <html/libvirt-libvirt-domain.html#virDomainFSFreeze>`__, `virDomainFSThaw <html/libvirt-libvirt-domain.html#virDomainFSThaw>`__
This pair of APIs does not directly capture guest state, but can be
used to coordinate with a trusted live guest that state capture is
about to happen, and therefore guest I/O should be quiesced so that
the state capture is fully consistent, rather than merely crash
consistent. Some APIs are able to automatically perform a freeze and
thaw via a flags parameter, rather than having to make separate calls
to these functions. Also, note that freezing guest I/O is only
possible with trusted guests running a guest agent, and that some
guests place maximum time limits on how long I/O can be frozen.
`virDomainCheckpointCreateXML <html/libvirt-libvirt-domain-checkpoint.html#virDomainCheckpointCreateXML>`__
This API does not actually capture guest state, rather it makes it
possible to track which portions of guest disks have changed between
a checkpoint and the current live execution of the guest. However,
while it is possible use this API to create checkpoints in isolation,
it is more typical to create a checkpoint as a side-effect of
starting a new incremental backup with ``virDomainBackupBegin()`` or
at the creation of an external snapshot with
``virDomainSnapshotCreateXML2()``, since a second incremental backup
is most useful when using the checkpoint created during the first.
See also the `XML details <formatcheckpoint.html>`__ used with this
command.
`virDomainBackupBegin <html/libvirt-libvirt-domain.html#virDomainBackupBegin>`__, `virDomainBackupEnd <html/libvirt-libvirt-domain.html#virDomainBackupEnd>`__
This API wraps approaches for capturing the state of disks of a
running guest, but does not track accompanying guest memory state.
The capture is consistent to the start of the operation, where the
captured state is stored independently from the disk image in use
with the guest and where it can be easily integrated with a
third-party for capturing the disk state. Since the backup operation
is stored externally from the guest resources, there is no need to
commit data back in at the completion of the operation. When coupled
with checkpoints, this can be used to capture incremental backups
instead of full.
Examples
========
The following two sequences both accomplish the task of capturing the
disk state of a running guest, then wrapping things up so that the guest
is still running with the same file as its disk image as before the
sequence of operations began. The difference between the two sequences
boils down to the impact of an unexpected interruption made at any point
in the middle of the sequence: with such an interruption, the first
example leaves the guest tied to a temporary wrapper file rather than
the original disk, and requires manual clean up of the domain
definition; while the second example has no impact to the domain
definition.
Backup via temporary snapshot
-----------------------------
::
virDomainFSFreeze()
virDomainSnapshotCreateXML(VIR_DOMAIN_SNAPSHOT_CREATE_DISK_ONLY)
virDomainFSThaw()
third-party copy the backing file to backup storage # most time spent here
virDomainBlockCommit(VIR_DOMAIN_BLOCK_COMMIT_ACTIVE) per disk
wait for commit ready event per disk
virDomainBlockJobAbort() per disk
Direct backup
-------------
::
virDomainFSFreeze()
virDomainBackupBegin()
virDomainFSThaw()
wait for push mode event, or pull data over NBD # most time spent here
virDomainBackupEnd()

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@@ -1,529 +0,0 @@
============================
Launch security with AMD SEV
============================
.. contents::
Storage encryption in modern public cloud computing is a common
practice. However, from the point of view of a user of these cloud
workloads, a significant amount of trust needs to be put in the cloud
platform security as well as integrity (was the hypervisor tampered?).
For this reason there's ever rising demand for securing data in use,
i.e. memory encryption. One of the solutions addressing this matter is
AMD SEV.
AMD Secure Encrypted Virtualization (SEV)
=========================================
SEV (Secure Encrypted Virtualization) is a feature extension of AMD's
SME (Secure Memory Encryption) intended for KVM virtual machines which
is supported primarily on AMD's EPYC CPU line. In contrast to SME, SEV
uses a unique memory encryption key for each VM. The whole encryption of
memory pages is completely transparent to the hypervisor and happens
inside dedicated hardware in the on-die memory controller. Each
controller includes a high-performance Advanced Encryption Standard
(AES) engine that encrypts data when it is written to DRAM and decrypts
it when read. For more details about the technology itself, you can
visit `AMD's developer portal <https://developer.amd.com/sev/>`__.
Enabling SEV on the host
========================
Before VMs can make use of the SEV feature you need to make sure your
AMD CPU does support SEV. You can check whether SEV is among the CPU
flags with:
::
$ cat /proc/cpuinfo | grep sev
...
sme ssbd sev ibpb
Next step is to enable SEV in the kernel, because it is disabled by
default. This is done by putting the following onto the kernel command
line:
::
mem_encrypt=on kvm_amd.sev=1
To make the changes persistent, append the above to the variable holding
parameters of the kernel command line in ``/etc/default/grub`` to
preserve SEV settings across reboots
::
$ cat /etc/default/grub
...
GRUB_CMDLINE_LINUX="... mem_encrypt=on kvm_amd.sev=1"
$ grub2-mkconfig -o /boot/efi/EFI/<distro>/grub.cfg
``mem_encrypt=on`` turns on the SME memory encryption feature on the
host which protects against the physical attack on the hypervisor
memory. The ``kvm_amd.sev`` parameter actually enables SEV in the kvm
module. It can be set on the command line alongside ``mem_encrypt`` like
shown above, or it can be put into a module config under
``/etc/modprobe.d/``
::
$ cat /etc/modprobe.d/sev.conf
options kvm_amd sev=1
After rebooting the host, you should see SEV being enabled in the
kernel:
::
$ cat /sys/module/kvm_amd/parameters/sev
1
Checking SEV support in the virt stack
======================================
**Note: All of the commands bellow need to be run with root
privileges.**
First make sure you have the following packages in the specified
versions:
- libvirt >= 4.5.0 (>5.1.0 recommended due to additional SEV bugfixes)
- QEMU >= 2.12.0
To confirm that the virtualization stack supports SEV, run the
following:
::
# virsh domcapabilities
<domainCapabilities>
...
<features>
...
<sev supported='yes'>
<cbitpos>47</cbitpos>
<reducedPhysBits>1</reducedPhysBits>
</sev>
...
</features>
</domainCapabilities>
Note that if libvirt was already installed and libvirtd running before
enabling SEV in the kernel followed by the host reboot you need to force
libvirtd to re-probe both the host and QEMU capabilities. First stop
libvirtd:
::
# systemctl stop libvirtd.service
Now you need to clean the capabilities cache:
::
# rm -f /var/cache/libvirt/qemu/capabilities/*
If you now restart libvirtd, it will re-probe the capabilities and if
you now run:
::
# virsh domcapabilities
SEV should be listed as supported. If you still see:
::
<sev supported='no'/>
it means one of two things:
#. libvirt does support SEV, but either QEMU or the host does not
#. you have libvirt <=5.1.0 which suffered from getting a
``'Permission denied'`` on ``/dev/sev`` because of the default
permissions on the character device which prevented QEMU from opening
it during capabilities probing - you can either manually tweak the
permissions so that QEMU has access to it or preferably install
libvirt 5.1.0 or higher
VM Configuration
================
SEV is enabled in the XML by specifying the
`<launchSecurity> <https://libvirt.org/formatdomain.html#launchSecurity>`__
element. However, specifying ``launchSecurity`` isn't enough to boot an
SEV VM. Further configuration requirements are discussed below.
Machine type
------------
Even though both Q35 and legacy PC machine types (for PC see also
"virtio") can be used with SEV, usage of the legacy PC machine type is
strongly discouraged, since depending on how your OVMF package was built
(e.g. including features like SecureBoot or SMM) Q35 may even be
required.
Q35
~~~
::
...
<os>
<type arch='x86_64' machine='pc-q35-3.0'>hvm</type>
...
</os>
...
i440fx (discouraged)
~~~~~~~~~~~~~~~~~~~~
::
...
<os>
<type arch='x86_64' machine='pc-i440fx-3.0'>hvm</type>
...
</os>
...
Boot loader
-----------
SEV is only going to work with OVMF (UEFI), so you'll need to point
libvirt to the correct OVMF binary.
::
...
<os>
<type arch='x86_64' machine='pc-q35-3.0'>hvm</type>
<loader readonly='yes' type='pflash'>/usr/share/edk2/ovmf/OVMF_CODE.fd</loader>
</os>
...
Memory
------
Internally, SEV expects that the encrypted memory pages won't be swapped
out or move around so the VM memory needs to be pinned in physical RAM
which will be handled by QEMU. Apart from that, certain memory regions
allocated by QEMU itself (UEFI pflash, device ROMs, video RAM, etc.)
have to be encrypted as well. This causes a conflict in how libvirt
tries to protect the host. By default, libvirt enforces a memory hard
limit on each VM's cgroup in order to protect the host from malicious
QEMU to allocate and lock all the available memory. This limit
corresponds to the total memory allocation for the VM given by
``<currentMemory>`` element. However, trying to account for the
additional memory regions QEMU allocates when calculating the limit in
an automated manner is non-deterministic. One way to resolve this is to
set the hard limit manually.
Note: Figuring out the right number so that your guest boots and isn't
killed is challenging, but 256MiB extra memory over the total guest RAM
should suffice for most workloads and may serve as a good starting
point. For example, a domain with 4GB memory with a 256MiB extra hard
limit would look like this:
::
# virsh edit <domain>
<domain>
...
<currentMemory unit='KiB'>4194304</currentMemory>
<memtune>
<hard_limit unit='KiB'>4456448</hard_limit>
</memtune>
...
</domain>
There's another, preferred method of taking care of the limits by using
the\ ``<memoryBacking>`` element along with the ``<locked/>``
subelement:
::
<domain>
...
<memoryBacking>
<locked/>
</memoryBacking>
...
</domain>
What that does is that it tells libvirt not to force any hard limit
(well, unlimited) upon the VM cgroup. The obvious advantage is that one
doesn't need to determine the hard limit for every single SEV-enabled
VM. However, there is a significant security-related drawback to this
approach. Since no hard limit is applied, a malicious QEMU could perform
a DoS attack by locking all of the host's available memory. The way to
avoid this issue and to protect the host is to enforce a bigger hard
limit on the master cgroup containing all of the VMs - on systemd this
is ``machine.slice``.
::
# systemctl set-property machine.slice MemoryHigh=<value>
To put even stricter measures in place which would involve the OOM
killer, use
::
# systemctl set-property machine.slice MemoryMax=<value>
instead. Alternatively, you can create a systemd config (don't forget to
reload systemd configuration in this case):
::
# cat << EOF > /etc/systemd/system.control/machine.slice.d/90-MemoryMax.conf
MemoryMax=<value>
EOF
The trade-off to keep in mind with the second approach is that the VMs
can still perform DoS on each other.
Virtio
------
In order to make virtio devices work, we need to enable emulated IOMMU
on the devices so that virtual DMA can work.
::
# virsh edit <domain>
<domain>
...
<controller type='virtio-serial' index='0'>
<driver iommu='on'/>
</controller>
<controller type='scsi' index='0' model='virtio-scsi'>
<driver iommu='on'/>
</controller>
...
<memballoon model='virtio'>
<driver iommu='on'/>
</memballoon>
<rng model='virtio'>
<backend model='random'>/dev/urandom</backend>
<driver iommu='on'/>
</rng>
...
<domain>
If you for some reason want to use the legacy PC machine type, further
changes to the virtio configuration is required, because SEV will not
work with Virtio <1.0. In libvirt, this is handled by using the
virtio-non-transitional device model (libvirt >= 5.2.0 required).
Note: some devices like video devices don't support non-transitional
model, which means that virtio GPU cannot be used.
::
<domain>
...
<devices>
...
<memballoon model='virtio-non-transitional'>
<driver iommu='on'/>
</memballoon>
</devices>
...
</domain>
Checking SEV from within the guest
==================================
After making the necessary adjustments discussed in
`Configuration <#Configuration>`__, the VM should now boot successfully
with SEV enabled. You can then verify that the guest has SEV enabled by
running:
::
# dmesg | grep -i sev
AMD Secure Encrypted Virtualization (SEV) active
Limitations
===========
Currently, the boot disk cannot be of type virtio-blk, instead,
virtio-scsi needs to be used if virtio is desired. This limitation is
expected to be lifted with future releases of kernel (the kernel used at
the time of writing the article is 5.0.14). If you still cannot start an
SEV VM, it could be because of wrong SELinux label on the ``/dev/sev``
device with selinux-policy <3.14.2.40 which prevents QEMU from touching
the device. This can be resolved by upgrading the package, tuning the
selinux policy rules manually to allow svirt_t to access the device (see
``audit2allow`` on how to do that) or putting SELinux into permissive
mode (discouraged).
Full domain XML examples
========================
Q35 machine
-----------
::
<domain type='kvm'>
<name>sev-dummy</name>
<memory unit='KiB'>4194304</memory>
<currentMemory unit='KiB'>4194304</currentMemory>
<memoryBacking>
<locked/>
</memoryBacking>
<vcpu placement='static'>4</vcpu>
<os>
<type arch='x86_64' machine='pc-q35-3.0'>hvm</type>
<loader readonly='yes' type='pflash'>/usr/share/edk2/ovmf/OVMF_CODE.fd</loader>
<nvram>/var/lib/libvirt/qemu/nvram/sev-dummy_VARS.fd</nvram>
</os>
<features>
<acpi/>
<apic/>
<vmport state='off'/>
</features>
<cpu mode='host-model' check='partial'>
<model fallback='allow'/>
</cpu>
<clock offset='utc'>
<timer name='rtc' tickpolicy='catchup'/>
<timer name='pit' tickpolicy='delay'/>
<timer name='hpet' present='no'/>
</clock>
<on_poweroff>destroy</on_poweroff>
<on_reboot>restart</on_reboot>
<on_crash>destroy</on_crash>
<pm>
<suspend-to-mem enabled='no'/>
<suspend-to-disk enabled='no'/>
</pm>
<devices>
<emulator>/usr/bin/qemu-kvm</emulator>
<disk type='file' device='disk'>
<driver name='qemu' type='qcow2'/>
<source file='/var/lib/libvirt/images/sev-dummy.qcow2'/>
<target dev='sda' bus='scsi'/>
<boot order='1'/>
</disk>
<controller type='virtio-serial' index='0'>
<driver iommu='on'/>
</controller>
<controller type='scsi' index='0' model='virtio-scsi'>
<driver iommu='on'/>
</controller>
<interface type='network'>
<mac address='52:54:00:cc:56:90'/>
<source network='default'/>
<model type='virtio'/>
<driver iommu='on'/>
</interface>
<graphics type='spice' autoport='yes'>
<listen type='address'/>
<gl enable='no'/>
</graphics>
<video>
<model type='qxl'/>
</video>
<memballoon model='virtio'>
<driver iommu='on'/>
</memballoon>
<rng model='virtio'>
<driver iommu='on'/>
</rng>
</devices>
<launchSecurity type='sev'>
<cbitpos>47</cbitpos>
<reducedPhysBits>1</reducedPhysBits>
<policy>0x0003</policy>
</launchSecurity>
</domain>
PC-i440fx machine
-----------------
::
<domain type='kvm'>
<name>sev-dummy-legacy</name>
<memory unit='KiB'>4194304</memory>
<currentMemory unit='KiB'>4194304</currentMemory>
<memtune>
<hard_limit unit='KiB'>5242880</hard_limit>
</memtune>
<vcpu placement='static'>4</vcpu>
<os>
<type arch='x86_64' machine='pc-i440fx-3.0'>hvm</type>
<loader readonly='yes' type='pflash'>/usr/share/edk2/ovmf/OVMF_CODE.fd</loader>
<nvram>/var/lib/libvirt/qemu/nvram/sev-dummy_VARS.fd</nvram>
<boot dev='hd'/>
</os>
<features>
<acpi/>
<apic/>
<vmport state='off'/>
</features>
<cpu mode='host-model' check='partial'>
<model fallback='allow'/>
</cpu>
<clock offset='utc'>
<timer name='rtc' tickpolicy='catchup'/>
<timer name='pit' tickpolicy='delay'/>
<timer name='hpet' present='no'/>
</clock>
<on_poweroff>destroy</on_poweroff>
<on_reboot>restart</on_reboot>
<on_crash>destroy</on_crash>
<pm>
<suspend-to-mem enabled='no'/>
<suspend-to-disk enabled='no'/>
</pm>
<devices>
<emulator>/usr/bin/qemu-kvm</emulator>
<disk type='file' device='disk'>
<driver name='qemu' type='qcow2'/>
<source file='/var/lib/libvirt/images/sev-dummy-seabios.qcow2'/>
<target dev='sda' bus='sata'/>
</disk>
<interface type='network'>
<mac address='52:54:00:d8:96:c8'/>
<source network='default'/>
<model type='virtio-non-transitional'/>
</interface>
<serial type='pty'>
<target type='isa-serial' port='0'>
<model name='isa-serial'/>
</target>
</serial>
<console type='pty'>
<target type='serial' port='0'/>
</console>
<input type='tablet' bus='usb'>
<address type='usb' bus='0' port='1'/>
</input>
<input type='mouse' bus='ps2'/>
<input type='keyboard' bus='ps2'/>
<graphics type='spice' autoport='yes'>
<listen type='address'/>
<gl enable='no'/>
</graphics>
<video>
<model type='qxl' ram='65536' vram='65536' vgamem='16384' heads='1' primary='yes'/>
</video>
<memballoon model='virtio-non-transitional'>
<driver iommu='on'/>
</memballoon>
<rng model='virtio-non-transitional'>
<driver iommu='on'/>
</rng>
</devices>
<launchSecurity type='sev'>
<cbitpos>47</cbitpos>
<reducedPhysBits>1</reducedPhysBits>
<policy>0x0003</policy>
</launchSecurity>
</domain>

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