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Same motivation as in other places: let's use a single logic to parse this.
Use path_equal() to compare the path.
A bug in error handling is fixed: if we failed after the GREEDY_REALLOC but
before the line that sets the last item to NULL, we would jump to
_cleanup_strv_free_ with the strv unterminated. Let's use GREEDY_REALLOC0
to avoid the issue.
Ld's man page says the following:
-u symbol
--undefined=symbol
Force symbol to be entered in the output file as an undefined symbol. Doing
this may, for example, trigger linking of additional modules from standard
libraries. -u may be repeated with different option arguments to enter
additional undefined symbols. This option is equivalent to the "EXTERN"
linker script command.
If this option is being used to force additional modules to be pulled into
the link, and if it is an error for the symbol to remain undefined, then the
option --require-defined should be used instead.
This would imply that it always requires an argument, which this does not
pass. Thus it will grab the next argument on the command line as its
argument. Before it took one of the many -lrt args (presumably) and now it
grabs something other random linker argument and things break.
[zj: this line was added in the first version of the meson configuration back
in 5c23128dab. AFAICT, this was a mistake. No
such flag appeared in Makefile.am at the time.]
https://github.com/mesonbuild/meson/issues/5113
With assertions disabled, we'd get a bunch of warnings that really bring no
value. With this change, a default meson build with -Db_ndebug=true generates
no warnings.
Due to this specific change: d0b6a10#diff-0203416587516c224c8fcfe8129e7caeR8,
systemd-nspawn uses libseccomp now if it is available. We we need to pass -I/usr/include
/libseccomp (or wherever seccomp.h is located) when compiling systemd-nspawn because
nspawn-settings.h does #include <seccomp.h>.
Fixes: #12060
Setting an access mode != 0666 is explicitly supported via -Dgroup-render-mode
In such a case, re-add the uaccess tag.
This is basically the same change that was done for /dev/kvm in
commit fa53e24130 and
ace5e3111c
and partially reverts the changes from
4e15a7343c
This avoids double compilation. Those files are tiny, so it doesn't save time,
but we avoid repeated warnings and errors, and it's generally cleaner to it
this way.
The number of commands in 'ninja -C build clean && ninja -C build' drops from
1462 to 1455 for me.
By defining rootprefix= we avoid a double slash in $systemdsystemunitdir and
other variables. This fixes a regression introduced in
1c2c7c6cb3 where the variables using rootprefix=/
would start with a double slash. This should be interpreted the same, but is
certainly ugly.
The rootprefix variable was added to systemd.pc in
1c2c7c6cb3, so there is no question of backwards
compatiblity. If people try to "override" the prefix and specify
--define-variable=rootprefix=/, they will get a double slash, which should be
OK, and is the same as --define-variable=rootprefix=/something/, which also
results in a double slash somewhere in the strings.
Let's move the shutdown binary into its own subdirectory in
src/shutdown, after all it is relatively isolated from the normal PID 1
sources, being a different binary and all.
Unfortunately it's not possible to move some of the code, since it is
shared with PID 1, that I wished we could move, but I still think it's
worth it.
Clang includes -W#warning in -Werror, so the #warning used for msan would
be an error.
v2:
- use -Wno-error=... so that the warning is still emitted, but not as an error.
Setting -fPIE globally can lead to miscompilations on certain
architectures.
This is caused by both -fPIE and -fPIC options being added to various
compilation commands. Only -fPIC is being recorded in the LTO options
section of the object. The gcc-8 LTO plugin merges -fPIC + -fPIE to
nothing. So, the compilations done by the plugin are not
position-independent and fail to link with -pie.
The simplest solution is to stop setting -fPIE globally and instead
using meson's b_pie=true option. This requires meson 0.49 or later.
Since we don't set this option in meson.build but leave it up to the
distro maintainer to set this option, do not bump the meson version
requirement.
Fixes: #10548
This reverts commit 0c2e93b863.
This should not be necessary anymore after previous commit.
I don't quite remember what sequence of steps was failing, but right now
"meson build -Dslow-tests=true && ninja -C build fuzzers" work fine.
This uses a {% for %} loop in Jekyll to render the page, from the "title"
information in the Front Matter of the actual page files.
This also makes `make-index-md` build rule unnecessary, since generation is
done by the template engine itself.
Tested this by running Jekyll locally.
This is supposed an error when building fuzzers for sanitization (that is a
nested build with the sanitization options):
In file included from ../../../../src/basic/util.c:21:0:
../../../../src/basic/build.h:4:21: fatal error: version.h: No such file or directory
#include "version.h"
^
compilation terminated.
Internally we do 'ninja -C test/fuzz/sanitize-address-fuzzers fuzzers'.
I'm not quite sure why version.h is not built in this case. But declaring
version_h as the dependency forces it to be built and solves the issue.
It would be better to define the dependency on individual exe's, but this
doesn't work:
meson.build:2884:8: ERROR: Argument is of an unacceptable type 'CustomTarget'.
Must be either an external dependency (returned by find_library() or
dependency()) or an internal dependency (returned by declare_dependency()).
Let's treat this a hack for another hack, which the nested build is.
This will be useful when building distro packages, because we can set the
version string to the rpm/dpkg/whatever version string, and getter reports
from end users.
$ build/systemctl --version
systemd 239-3555-g6178cbb5b5
+PAM +AUDIT +SELINUX +IMA -APPARMOR +SMACK +SYSVINIT +UTMP +LIBCRYPTSETUP +GCRYPT +GNUTLS +ACL +XZ +LZ4 +SECCOMP +BLKID +ELFUTILS +KMOD -IDN2 +IDN +PCRE2 default-hierarchy=hybrid
$ git tag v240 -m 'v240'
$ ninja -C build
ninja: Entering directory `build'
[76/76] Linking target fuzz-unit-file.
$ build/systemctl --version
systemd 240
+PAM +AUDIT +SELINUX +IMA -APPARMOR +SMACK +SYSVINIT +UTMP +LIBCRYPTSETUP +GCRYPT +GNUTLS +ACL +XZ +LZ4 +SECCOMP +BLKID +ELFUTILS +KMOD -IDN2 +IDN +PCRE2 default-hierarchy=hybrid
This is very useful during development, because a precise version string is
embedded in the build product and displayed during boot, so we don't have to
guess answers for questions like "did I just boot the latest version or the one
from before?".
This change creates an overhead for "noop" builds. On my laptop, 'ninja -C
build' that does nothing goes from 0.1 to 0.5 s. It would be nice to avoid
this, but I think that <1 s is still acceptable.
Fixes#7183.
PACKAGE_VERSION is renamed to GIT_VERSION, to make it obvious that this is the
more dynamically changing version string.
Why save to a file? It would be easy to generate the version tag using
run_command(), but we want to go through a file so that stuff gets rebuilt when
this file changes. If we just defined an variable in meson, ninja wouldn't know
it needs to rebuild things.
Let's not use atoi() if we can simply provide the project version as a number.
In C code, this is the numerical project version. In substitutions in other
files, this is just the bare substitution.
The "PACKAGE_" prefix is from autotools, and is strange. We call systemd a
"project", and "package" is something that distros build. Let's rename.
PACKAGE_URL is renamed to PROJECT_URL for the same reasons and for consistency.
(This leave PACKAGE_VERSION as the stringified define for C code.)
PACKAGE_VERSION is more explicit, and also, we don't pretend that changing the
project name in meson.build has any real effect. "systemd" is embedded in a
thousand different places, so let's just use the hardcoded string consistently.
This is mostly in preparation for future changes.
This is useful for distributions, where the stability of interface names should
be preseved after an upgrade of systemd. So when some specific release of the
distro is made available, systemd defaults to the latest & greatest naming
scheme, and subsequent updates set the same default. This default may still
be overriden through the kernel and env var options.
A special value "latest" is also allowed. Without a specific name, it is harder
to verride from meson. In case of 'combo' options, meson reads the default
during the initial configuration, and "remembers" this choice. When systemd is
updated, old build/ directories could keep the old default, which would be
annoying. Hence, "latest" is introduced to make it explicit, yet follow the
upstream. This is actually useful for the user too, because it may be used
as an override, without having to actually specify a version.
add new "systemd-run-generator" for running arbitrary commands from the kernel command line as system services using the "systemd.run=" kernel command line switch
This is really useful for running commands like this:
# systemd-run -i someimage.raw -b systemd.run='"some command line"'
This will now run the command line inside a small Type=oneshot service
and even propagate the exit code of the command back to the parent. And
all that with the full system booted up.
By default this causes the system to shutdown right after the command
completed, but this can be tweaked with systemd.run_success_action= and
systemd.run_failure_action=.
Note that when used in VMs the exit status can of course not be
propagate, as VMs don't really know a concept for that.
Fixes: #2728
This is also supposed to be preparation for doing #10234 eventually,
where a very similar operation is requested: instead of importing a tree
to /var/lib/machines it would need to be imported into
/var/lib/portables/.
This doesn't have much effect on the final build, because we link libbasic.a
into libsystemd-shared.so, so in the end, all the object built from basic/
end up in libsystemd-shared. And when the static library is linked into binaries,
any objects that are included in it but are not used are trimmed. Hence, the
size of output artifacts doesn't change:
$ du -sb /var/tmp/inst*
54181861 /var/tmp/inst1 (old)
54207441 /var/tmp/inst1s (old split-usr)
54182477 /var/tmp/inst2 (new)
54208041 /var/tmp/inst2s (new split-usr)
(The negligible change in size is because libsystemd-shared.so is bigger
by a few hundred bytes. I guess it's because symbols are named differently
or something like that.)
The effect is on the build process, in particular partial builds. This change
effectively moves the requirements on some build steps toward the leaves of the
dependency tree. Two effects:
- when building items that do not depend on libsystemd-shared, we
build less stuff for libbasic.a (which wouldn't be used anyway,
so it's a net win).
- when building items that do depend on libshared, we reduce libbasic.a as a
synchronization point, possibly allowing better parallelism.
Method:
1. copy list of .h files from src/basic/meson.build to /tmp/basic
2. $ for i in $(grep '.h$' /tmp/basic); do echo $i; git --no-pager grep "include \"$i\"" src/basic/ 'src/lib*' 'src/nss-*' 'src/journal/sd-journal.c' |grep -v "${i%.h}.c";echo ;done | less
Fixes#4549.
People want to be able to redefine the prefixes relative to which the other
variables are defined. Something like
pkgconf --define-variable=prefix=/home/user/installpath --variable=systemdsystemunitdir systemd
I'm not convinced that this entirely useful, because the installed systemd will
not look at those paths, but maybe it's OK as an alternative type of $DESTDIR.
This has been requested a few times over the years, so let's just provide this.
I thought this would be more complicated, since we allow all kinds of directories
to be overrides in the compilation configuration. But it turns out that all the
directories defined in systemd.pc are relative to three prefixes:
$prefix, $rootprefix, and $sysconfdir. So this patch adds $rootprefix and $sysconfdir
to the .pc file and then changes the subsequent definitions in the .pc file to use
them. In the end we define each path twice using the same rules: once in meson.build
and once in the .pc file.
Without overrides:
$ for i in $(pkgconf --with-path=build/src/core systemd --print-variables); do
echo -n "$i = "; pkgconf --with-path=$PWD/build/src/core --variable=$i systemd
done
containeruidbasemax = 1878982656
containeruidbasemin = 524288
dynamicuidmax = 65519
dynamicuidmin = 61184
systemgidmax = 999
systemuidmax = 999
catalogdir = /usr/lib/systemd/catalog
modulesloaddir = /usr/lib/modules-load.d
binfmtdir = /usr/lib/binfmt.d
sysctldir = /usr/lib/sysctl.d
sysusersdir = /usr/lib/sysusers.d
tmpfilesdir = /usr/lib/tmpfiles.d
systemdshutdowndir = /usr/lib/systemd/system-shutdown
systemdsleepdir = /usr/lib/systemd/system-sleep
systemdusergeneratordir = /usr/lib/systemd/user-generators
systemdsystemgeneratordir = /usr/lib/systemd/system-generators
systemduserunitpath = /etc/systemd/user:/etc/systemd/user:/run/systemd/user:/usr/local/lib/systemd/user:/usr/local/share/systemd/user:/usr/lib/systemd/user:/usr/lib/systemd/user:/usr/share/systemd/user
systemdsystemunitpath = /etc/systemd/system:/etc/systemd/system:/run/systemd/system:/usr/local/lib/systemd/system:/usr/lib/systemd/system:/usr/lib/systemd/system:/lib/systemd/system
systemduserconfdir = /etc/systemd/user
systemdsystemconfdir = /etc/systemd/system
systemduserpresetdir = /usr/lib/systemd/user-preset
systemduserunitdir = /usr/lib/systemd/user
systemdsystempresetdir = /usr/lib/systemd/system-preset
systemdsystemunitdir = /usr/lib/systemd/system
systemdutildir = /usr/lib/systemd
sysconfdir = /etc
rootprefix = /usr
prefix = /usr
pcfiledir = /usr/share/pkgconfig
With overrides:
$ for i in $(pkgconf --with-path=build/src/core systemd --print-variables); do
echo -n "$i = "; pkgconf --with-path=$PWD/build/src/core \
--define-variable=prefix=/PREFIX \
--define-variable=rootprefix=/ROOTPREFIX \
--define-variable=sysconfdir=/SYSCONF --variable=$i systemd
done
containeruidbasemax = 1878982656
containeruidbasemin = 524288
dynamicuidmax = 65519
dynamicuidmin = 61184
systemgidmax = 999
systemuidmax = 999
catalogdir = /PREFIX/lib/systemd/catalog
modulesloaddir = /PREFIX/lib/modules-load.d
binfmtdir = /PREFIX/lib/binfmt.d
sysctldir = /PREFIX/lib/sysctl.d
sysusersdir = /PREFIX/lib/sysusers.d
tmpfilesdir = /PREFIX/lib/tmpfiles.d
systemdshutdowndir = /ROOTPREFIX/lib/systemd/system-shutdown
systemdsleepdir = /ROOTPREFIX/lib/systemd/system-sleep
systemdusergeneratordir = /PREFIX/lib/systemd/user-generators
systemdsystemgeneratordir = /ROOTPREFIX/lib/systemd/system-generators
systemduserunitpath = /SYSCONF/systemd/user:/etc/systemd/user:/run/systemd/user:/usr/local/lib/systemd/user:/usr/local/share/systemd/user:/PREFIX/lib/systemd/user:/usr/lib/systemd/user:/usr/share/systemd/user
systemdsystemunitpath = /SYSCONF/systemd/system:/etc/systemd/system:/run/systemd/system:/usr/local/lib/systemd/system:/ROOTPREFIX/lib/systemd/system:/usr/lib/systemd/system:/lib/systemd/system
systemduserconfdir = /SYSCONF/systemd/user
systemdsystemconfdir = /SYSCONF/systemd/system
systemduserpresetdir = /PREFIX/lib/systemd/user-preset
systemduserunitdir = /PREFIX/lib/systemd/user
systemdsystempresetdir = /ROOTPREFIX/lib/systemd/system-preset
systemdsystemunitdir = /ROOTPREFIX/lib/systemd/system
systemdutildir = /usr/lib/systemd
sysconfdir = /SYSCONF
rootprefix = /ROOTPREFIX
prefix = /PREFIX
pcfiledir = /usr/share/pkgconfig
(pkgconf doesn't provide a way to print all variables together with their definitions,
according to the man page. Disappointing.)
Assigning multiple variables in one line is no valid meson syntax.
Without this running meson with -Ddns-over-tls=false fails with:
meson.build:1191:8: ERROR: Tried to assign an invalid value to variable.
Fuzzers are just special tests anyways and without this, building with
'-Dtests=false' fails with:
.../src/fuzz/fuzz-main.c:20: undefined reference to `test_setup_logging'
lz4-r130 was released on May 29th, 2015. Let's drop the work-around for older
versions. In particular, we won't test any new code against those ancient
releases, so we shouldn't pretend they are supported.
This is might be useful in some cases, but it's primarily an example for
a boot check service that can be plugged before boot-complete.target.
It's disabled by default.
All it does is check whether the failed unit count is zero
This is the counterpiece to the boot counting implemented in
systemd-boot: if a boot is detected as successful we mark drop the
counter again from the booted snippet or kernel image.
After discussions with kernel folks, a system with memcg really
shouldn't need extra hard limits on file descriptors anymore, as they
are properly accounted for by memcg anyway. Hence, let's bump these
values to their maximums.
This also adds a build time option to turn thiss off, to cover those
users who do not want to use memcg.
I think this is a slightly cleaner approach than parsing the
configuration file at multiple places, as this way there's only a single
reload cycle for logind.conf, and that's systemd-logind.service's
runtime.
This means that logind and dbus become a requirement of
user-runtime-dir, but given that XDG_RUNTIME_DIR is not set anyway
without logind and dbus around this isn't really any limitation.
This also simplifies linking a bit as this means user-runtime-dir
doesn't have to link against any code of logind itself.
This reverts commit 56f56d5ad8.
This broke the compilation for coverity under travis. Our build script does
something like this:
$ CFLAGS='-D_Float128=long\ double -D_Float64=double -D_Float64x=long\ double -D_Float32=float -D_Float32x=double' meson cov-build -Dman=false
$ ninja -C build
...
[pid 27096] execve("/usr/bin/cc", ["/usr/bin/cc", "-D_Float128=long", "double", "-D_Float64=double", "-D_Float64x=long", "double", "-D_Float32=float", "-D_Float32x=double", "-E", "-dM", "-include", "linux/capability.h", "-include", "config.h", "-include", "../src/basic/missing.h", "-"], 0x55ab75ea4e80 /* 91 vars */) = 0
cc: error: double: No such file or directory
cc: error: double: No such file or directory
[pid 27096] +++ exited with 1 +++
I'm sure this could be fixed somehow, but since the original motivation for
56f56d5ad8 wasn't very strong, let's just revert
it as this seems to be the simplest solution.
Mempool use is enabled or disabled based on the mempool_use_allowed symbol that
is linked in.
Should fix assert crashes in external programs caused by #9792.
Replaces #10286.
v2:
- use two different source files instead of a gcc constructor
