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Rather than trying to clean up the ssh child ourselves, and risk
subtle differences from the socket creation error path, we can
just use the new APIs.
* src/rpc/virnetsocket.c (virNetSocketFree): Use new function.
By requesting the pid in virCommandRunAsync, fdstream was claiming
that it would manually wait for the process. But on the failure
path, the child process was being leaked.
* src/fdstream.c (virFDStreamOpenFileInternal): Auto-reap child.
When using virCommandRunAsync and saving the pid for later, it
is useful to be able to reap that pid in the same way that it
would have been auto-reaped by virCommand if we had passed
NULL for the pid argument in the first place.
* src/util/command.c (virPidWait, virPidAbort): New functions,
created from...
(virCommandWait, virCommandAbort): ...bodies of these.
(includes): Drop duplicate <stdlib.h>. Ensure that our pid_t
assumptions hold.
(virCommandRunAsync): Improve documentation.
* src/util/command.h (virPidWait, virPidAbort): New prototypes.
* src/libvirt_private.syms: Export them.
* docs/internals/command.html.in: Document them.
In the Ubuntu development release we recently got a new udev that
moves /var/run to /run, /var/lock to /run/lock and /dev/shm to /run/shm.
This change in udev requires updating the apparmor security driver in
libvirt[1].
Attached is a patch that:
* adjusts src/security/virt-aa-helper.c to allow both
LOCALSTATEDIR/run/libvirt/**/%s.pid and /run/libvirt/**/%s.pid. While
the profile is not as precise, LOCALSTATEDIR/run/ is typically a symlink
to /run/ anyway, so there is no additional access (remember that
apparmor resolves symlinks, which is why this is still required even
if /var/run points to /run).
* adjusts example/apparmor/libvirt-qemu paths for /dev/shm
[1]https://launchpad.net/bugs/810270
--
Jamie Strandboge | http://www.canonical.com
Without this patch, the make rule in a VPATH build was trying to
invoke ../../docs/../../docs/todo.pl, which didn't exist.
* docs/Makefile.am (todo.html.in): Using $< already implies
$(srcdir) in GNU make VPATH situations.
Similar to the recent qemu_protocol-structs addition.
* src/virnetprotocol-structs: New file.
* src/Makefile.am (%_protocol-structs): Factor body...
(PDWTAGS): ...into new helper macro.
(virnetprotocol-structs): New rule.
(PROTOCOL_STRUCTS): Add virnetprotocol-structs.
We disable some drivers when building without libvirtd in configure,
but we do not do the same thing in libvirt.spec. It may break rpm
building without libvirtd.
Getting metadata on storage allocates a memory (path) which need to
be freed after use otherwise it gets leaked. This means after use of
virStorageFileGetMetadataFromFD or virStorageFileGetMetadata one
must call virStorageFileFreeMetadata to free it. This function frees
structure internals and structure itself.
When qemuMonitorCloseFileHandle is called in error path, we need to
preserve the original error since a possible further error when running
closefd monitor command is not very useful to users.
When creating new qemu process we saved domain status XML only after the
process was fully setup and running. In case libvirtd was killed before
the whole process finished, once libvirtd started again it didn't know
anything about the new process and we end up with an orphaned qemu
process. Let's save the domain status XML as soon as we know the PID so
that libvirtd can kill the process on restart.
The compiler might optimize based on our declaration that something
is unused. Putting that declaration in the header risks getting
out of sync with the actual implementation, so it belongs better
only in the .c files. We were mostly compliant, and a new syntax
check will help us in the future.
* cfg.mk (sc_avoid_attribute_unused_in_header): New syntax check.
* src/nodeinfo.h (nodeGetCPUStats, nodeGetMemoryStats): Delete
attribute already present in .c file.
* src/qemu/qemu_domain.h (qemuDomainEventFlush): Likewise.
* src/util/virterror_internal.h (virReportErrorHelper): Parameters
are actually used by .c file.
* src/xenxs/xen_sxpr.h (xenFormatSxprDisk): Adjust prototype.
* src/xenxs/xen_sxpr.c (xenFormatSxprDisk): Delete unused argument.
(xenFormatSxpr): Adjust caller.
* src/xen/xend_internal.c (xenDaemonAttachDeviceFlags)
(xenDaemonUpdateDeviceFlags): Likewise.
Suggested by Daniel Veillard.
For static functions not used as callbacks, there's no need to
keep an unused parameter.
* src/conf/domain_conf.c (virDomainChrDefParseTargetXML)
(virDomainTimerDefParseXML, virDomainHostdevSubsysUsbDefParseXML)
(virDomainVcpuPinDefParseXML): Drop unused parameter.
(virDomainChrDefParseXML, virDomainDefParseXML)
(virDomainHostdevDefParseXML): Update callers.
(virDomainNetDefParseXML): Mark flags used.
Valid loglevel range for virsh is 0-4. Update virsh man page
accordingly. Also explain virsh ENV variables and values.
Signed-off-by: Supriya Kannery <supriyak@in.ibm.com>
The last patch breaks make check for two reasons. First, it reverses the
condition but leaves default level unchanged, so instead of not printing
anything but errors before the patch it now prints all debug messages by
default. Second, you forgot to change -d5 option passed to virsh in
tests/virsh-optparse to -d0; the script wants to see all debug messages.
Aligning loglevel values of virsh to that of libvirt.
"DEBUG"=0 loglevel, when specified through commandline or
env variable, should log all the messages. "ERROR=4"
should log only error messages.
Signed-off-by: Supriya Kannery <supriyak@in.ibm.com>
In 2f4d2496a8 I didn't notice that one
part of virFileOpenAs doesn't actually call to virFileOpenAsNoFork but
rather includes a copy of the code from there.
No need to repeat common code.
* bootstrap.conf (gnulib_modules): Import calloc-posix.
* src/util/bridge.c (brInit): Use virSetCloseExec.
(brSetInterfaceUp): Adjust flags name.
* src/uml/uml_driver.c (umlSetCloseExec): Delete.
(umlStartVMDaemon): Use util version instead.
'unsigned a' and 'unsigned int a' are synonyms, but we generally
always spell out the 'int' in that case. Fixing this will avoid
a false positive in the next syntax-check commit.
* src/conf/node_device_conf.h (pci_config_address)
(_virNodeDevCapsDef): Prefer 'unsigned int' over 'unsigned'.
* src/xenapi/xenapi_driver.c (xenapiOpen, xenapiDomainReboot):
Reject unknown flags.
(xenapiDomainGetXMLDesc): Likewise, and pass known flags through
to XML generation.
* src/lxc/lxc_driver.c (lxcOpen, lxcDomainSetMemoryParameters)
(lxcDomainGetMemoryParameters): Reject unknown flags.
* src/lxc/lxc_container.c (lxcContainerStart): Rename flags to
cflags to reflect that it is not tied to libvirt.
Like commit 1740c381, but for libvirt-qemu.
* src/remote/qemu_protocol.x (qemu_monitor_command_args): Adjust
type to match API.
* src/qemu_protocol-structs: Update accordingly.
Continuation of commit 313ac7fd, and enforce things with a syntax
check.
Technically, virNetServerClientCalculateHandleMode is not printing
a mode_t, but rather a collection of VIR_EVENT_HANDLE_* bits;
however, these bits are < 8, so there is no different in the
output, and that was the easiest way to silence the new syntax check.
* cfg.mk (sc_flags_debug): New syntax check.
(exclude_file_name_regexp--sc_flags_debug): Add exemptions.
* src/fdstream.c (virFDStreamOpenFileInternal): Print flags in
hex, mode_t in octal.
* src/libvirt-qemu.c (virDomainQemuMonitorCommand)
(virDomainQemuAttach): Likewise.
* src/locking/lock_driver_nop.c (virLockManagerNopInit): Likewise.
* src/locking/lock_driver_sanlock.c (virLockManagerSanlockInit):
Likewise.
* src/locking/lock_manager.c: Likewise.
* src/qemu/qemu_migration.c: Likewise.
* src/qemu/qemu_monitor.c: Likewise.
* src/rpc/virnetserverclient.c
(virNetServerClientCalculateHandleMode): Print mode with %o.
I got bit in a debugging session on an uninstalled libvirtd; the
code tried to call out to the installed $LIBEXECDIR/libvirt_iohelper
instead of my just-built version. So I set a breakpoint and altered
the binary name to be "./src/libvirt_iohelper", and it still failed
because I don't have "." on my PATH.
According to POSIX, execvp only searches PATH if the name does
not contain a slash. Since we are trying to mimic that behavior,
an anchored name should be relative to the current working dir.
This tightens existing behavior, but most callers already pass
an absolute name or a name with no slashes, so it probably won't
be noticeable.
* src/util/util.c (virFindFileInPath): Anchored relative names do
not invoke a PATH search.
When replacing the default SEGV/ABORT/BUS signal handlers you
can't rely on the process being terminated after your custom
handler runs. It is neccessary to manually restore the default
handler and then re-raise the signal
* src/rpc/virnetserver.c: Restore default handler and raise
signal
When monitor is entered with qemuDomainObjEnterMonitorWithDriver, the
correct method for leaving and unlocking the monitor is
qemuDomainObjExitMonitorWithDriver.
Most of the code in these two functions is supposed to be identical but
currently it isn't (which is natural since the code is duplicated).
Let's move common parts of these functions into qemuMigrationPrepareAny.
This also fixes qemuMigrationPrepareTunnel which didn't store received
lockState in the domain object.
Asynchronous jobs may take long time to finish and may consist of
several phases which we need to now about to help with recovery/rollback
after libvirtd restarts.
