For now 'virsh quit' action like this:
--------------------------------
[root@localhost /]# virsh quit
[root@localhost /]#
--------------------------------
And 'virsh exit' action:
--------------------------------
[root@localhost /]# virsh exit
[root@localhost /]#
--------------------------------
There is a small difference('/n') between them.
According to manual said:
quit, exit
quit this interactive terminal
And in the code they all called cmdQuit func,
They should get same actions.
Signed-off-by: Li Yang <liyang.fnst@cn.fujitsu.com>
With this patch, all information related to a host resource in
a storage file backing chain now lives in util/virstoragefile.h.
The next step will be to consolidate various places that have
been tracking backing chain details to all use a common struct.
The changes to tools/Makefile.am were made necessary by the
fact that virstorageencryption includes uses of libxml, and is
now pulled in by inclusion from virstoragefile.h. No
additional libraries are linked into the final image, and in
comparison, the build of the setuid library in src/Makefile.am
already was using LIBXML_CFLAGS via AM_CFLAGS.
* src/conf/domain_conf.h (virDomainDiskSourceDef): Move...
* src/util/virstoragefile.h (virStorageSource): ...and rename.
* src/conf/domain_conf.c (virDomainDiskSourceDefClear)
(virDomainDiskAuthClear): Adjust clients.
* tools/Makefile.am (virt_login_shell_CFLAGS)
(virt_host_validate_CFLAGS): Add libxml headers.
Signed-off-by: Eric Blake <eblake@redhat.com>
'virsh help event' included a summary line "event - (null)"
due to a misnamed info field.
* tools/virsh-domain.c (info_event): Use correct name.
* tools/virsh-network.c (info_network_event): Likewise.
Signed-off-by: Eric Blake <eblake@redhat.com>
Use 'virsh list domain --title' option can get domain's title,
not description, the original help information 'show short
domain description' will confuse users, so modify it to
'show domain title'
Signed-off-by: Li Yang <liyang.fnst@cn.fujitsu.com>
This patch adds "[--format] <string>" to "virsh dump --memory-only", which is
changed to use the new virDomainCoreDumpWithFormat API.
Signed-off-by: Qiao Nuohan <qiaonuohan@cn.fujitsu.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
Busy enterprise workloads hosted on large sized VM's tend to dirty
memory faster than the transfer rate achieved via live guest migration.
Despite some good recent improvements (& using dedicated 10Gig NICs
between hosts) the live migration may NOT converge.
Recently support was added in qemu (version 1.6) to allow a user to
choose if they wish to force convergence of their migration via a
new migration capability : "auto-converge". This feature allows for qemu
to auto-detect lack of convergence and trigger a throttle-down of the
VCPUs.
This patch includes the libvirt support needed to trigger this
feature. (Testing is in progress)
Signed-off-by: Chegu Vinod <chegu_vinod@hp.com>
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
When listening for a subset of monitor events, it can be tedious
to register for each event name in series; nicer is to register
for multiple events in one go. Implement a flag to use regex
interpretation of the event filter.
While at it, prove how much I hate the shift key, by adding a
way to filter for 'shutdown' instead of 'SHUTDOWN'. :)
* include/libvirt/libvirt-qemu.h
(virConnectDomainQemuMonitorEventRegisterFlags): New enum.
* src/libvirt-qemu.c (virConnectDomainQemuMonitorEventRegister):
Document flags.
* tools/virsh-domain.c (cmdQemuMonitorEvent): Expose them.
* tools/virsh.pod (qemu-monitor-event): Document this.
* src/conf/domain_event.c
(virDomainQemuMonitorEventStateRegisterID): Add flags.
(virDomainQemuMonitorEventFilter): Handle regex, and optimize
client side.
(virDomainQemuMonitorEventCleanup): Clean up regex.
Signed-off-by: Eric Blake <eblake@redhat.com>
Any new API deserves a good virsh wrapper :)
qemu-monitor-event [<domain>] [<event>] [--pretty] [--loop] [--timeout <number>]
Very similar to the previous work on 'virsh event'. For an
example session:
$ virsh -c qemu:///system qemu-monitor-event --event SHUTDOWN&
$ virsh -c qemu:///system start f18-live
Domain f18-live started
$ virsh -c qemu:///system destroy f18-live
Domain f18-live destroyed
event SHUTDOWN at 1391212552.026544 for domain f18-live: (null)
events received: 1
[1]+ Done virsh -c qemu:///system qemu-monitor-event --event SHUTDOWN
$
* tools/virsh-domain.c (cmdQemuMonitorEvent): New command.
* tools/virsh.pod (qemu-monitor-event): Document it.
Signed-off-by: Eric Blake <eblake@redhat.com>
Any source file which calls the logging APIs now needs
to have a VIR_LOG_INIT("source.name") declaration at
the start of the file. This provides a static variable
of the virLogSource type.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
We allow translation from no_bandwidth to has_bandwidth for a vnic.
However, going in the opposite direction is not implemented. It's not
limitation of the API rather than internal implementation. The problem
is, we correctly detect that user hasn't specified any outbound (say
he wants to clear out outbound). However, this gets overwritten by
current vnic outbound settings. Then, virNetDevBandwidthSet doesn't
change anything. We need to stop overwriting the outbound if users
don't want us to. Same applies for inbound.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Commit a1cbe4b5 added a check for spaces around assignments and this
patch extends it to checks for spaces around '=='. One exception is
virAssertCmpInt where comma after '==' is acceptable (since it is a
macro and '==' is its argument).
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
Introducing keepalive similarly to Guannan around 2 years ago. Since
we want to introduce keepalive for every connection, it makes sense to
wrap the connecting function into new virsh one that can deal
keepalive as well.
Function vshConnect() is now used for connecting and keepalive added
in that function (if possible) helps preventing long waits e.g. while
nework goes down during migration.
This patch also adds the options for keepalive tuning into virsh and
fails connecting only when keepalives are explicitly requested and
cannot be set (whether it is due to missing support in connected
driver or remote server). If not explicitely requested, a debug
message is printed (hence the addition to virsh-optparse test).
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1073506
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=822839
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
vshRunConsole() uses virCondWait() which is a wrapper around
pthread_cond_wait(). On FreeBSD, pthread_cond_wait needs mutex to be
locked, otherwise it immediately fails with EPERM. On Linux, the
behaviour in this case is undefined.
So lock the mutex before calling virCondWait().
Coverity spotted that 'nfdlist' (ssize_t) could be -1, but that we
were using 'i' (size_t) to iterate over the list at cleanup, with
crashing results because it promotes to a really big unsigned number.
* tools/virt-login-shell.c (main): Avoid treating -1 as unsigned.
Signed-off-by: Eric Blake <eblake@redhat.com>
If a user specifies the pool explicitly, we should make sure to point
out that it's inactive instead of falling back to lookup by key/path and
failing at the end. Also if the pool isn't found there's no use in
continuing the lookup.
This changes the error in case the user-selected pool is inactive from:
$ virsh vol-upload --pool inactivepool --vol somevolname volcontents
error: failed to get vol 'somevolname'
error: Storage volume not found: no storage vol with matching path
somevolname
To a more descriptive:
$ virsh vol-upload --pool inactivepool --vol somevolname volcontents
error: pool 'inactivepool' is not active
And in case a user specifies an invalid pool from:
$ virsh vol-upload --pool invalidpool --vol somevolname volcontents
error: failed to get pool 'invalidpool'
error: failed to get vol 'somevolname', specifying --pool might help
error: Storage volume not found: no storage vol with matching path somevolname
To something less confusing:
$ virsh vol-upload --pool invalidpool --vol somevolname volcontents
error: failed to get pool 'invalidpool'
error: Storage pool not found: no storage pool with matching name 'invalidpool'
'virsh lxc-enter-namespace' does not have a way to reflect exit
status to the caller in single-command mode, but we might as well
at least report the exit status. Prior to this patch,
$ virsh -c lxc:/// lxc-enter-namespace shell /bin/sh 'exit 3'; echo $?
1
now it gives some details:
$ virsh -c lxc:/// lxc-enter-namespace shell /bin/sh -c 'exit 3'; echo $?
error: internal error: Child process (31557) unexpected exit status 3
1
Also useful:
$ virsh -c lxc:/// lxc-enter-namespace shell /bin/sh -c 'kill $$'; echo $?
error: internal error: Child process (31585) unexpected fatal signal 15
1
* tools/virsh-domain.c (cmdLxcEnterNamespace): Avoid magic numbers.
Dispatch any error.
* tools/virsh.pod: Document that non-zero exit status is collapsed.
Signed-off-by: Eric Blake <eblake@redhat.com>
virt-login-shell was exiting with status 0, regardless of what the
wrapped shell returned. This is unkind to users; we should behave
more like env(1), nice(1), su(1), and other wrapper programs, by
preserving the invoked application's status (which includes the
distinction between death due to signal vs. normal death).
* tools/virt-login-shell.c (main): Pass through child exit status.
* tools/virt-login-shell.pod: Document exit status.
Signed-off-by: Eric Blake <eblake@redhat.com>
Note that 'virsh lxc-enter-namespace' must double-fork, for two
reasons: some namespaces can only be done from a single thread,
while virsh is multithreaded; and because virsh can be run in
batch mode where we must not corrupt the namespace of that
execution upon return from the subsidiary command.
When virt-login-shell was first written, it blindly copied from
'virsh lxc-enter-namespace', including the double-fork. But
neither of the reasons for double forking apply to
virt-login-shell (we are single-threaded, and we have nothing to
do after the child completes that would require us to preserve a
namespace), so we can simplify life by using a single fork.
In turn, this will make it easier for a future patch to pass the
child's exit status on to the invoking shell.
In flattening to a single fork, note that closing the fds must
be done after fork, because the parent process still needs to
use fds to control the virConnectPtr; meanwhile, chdir can be
done prior to forking (in fact, it's easier to report errors
on anything attempted before forking).
* tools/virt-login-shell.c (main): Single rather than double fork.
(virLoginShellFini): Delete, by inlining actions instead.
Signed-off-by: Eric Blake <eblake@redhat.com>
The old semantics of virFork() violates the priciple of good
usability: it requires the caller to check the pid argument
after use, *even when virFork returned -1*, in order to properly
abort a child process that failed setup done immediately after
fork() - that is, the caller must call _exit() in the child.
While uses in virfile.c did this correctly, uses in 'virsh
lxc-enter-namespace' and 'virt-login-shell' would happily return
from the calling function in both the child and the parent,
leading to very confusing results. [Thankfully, I found the
problem by inspection, and can't actually trigger the double
return on error without an LD_PRELOAD library.]
It is much better if the semantics of virFork are impossible
to abuse. Looking at virFork(), the parent could only ever
return -1 with a non-negative pid if it misused pthread_sigmask,
but this never happens. Up until this patch series, the child
could return -1 with non-negative pid if it fails to set up
signals correctly, but we recently fixed that to make the child
call _exit() at that point instead of forcing the caller to do
it. Thus, the return value and contents of the pid argument are
now redundant (a -1 return now happens only for failure to fork,
a child 0 return only happens for a successful 0 pid, and a
parent 0 return only happens for a successful non-zero pid),
so we might as well return the pid directly rather than an
integer of whether it succeeded or failed; this is also good
from the interface design perspective as users are already
familiar with fork() semantics.
One last change in this patch: before returning the pid directly,
I found cases where using virProcessWait unconditionally on a
cleanup path of a virFork's -1 pid return would be nicer if there
were a way to avoid it overwriting an earlier message. While
such paths are a bit harder to come by with my change to a direct
pid return, I decided to keep the virProcessWait change in this
patch.
* src/util/vircommand.h (virFork): Change signature.
* src/util/vircommand.c (virFork): Guarantee that child will only
return on success, to simplify callers. Return pid rather than
status, now that the situations are always the same.
(virExec): Adjust caller, also avoid open-coding process death.
* src/util/virprocess.c (virProcessWait): Tweak semantics when pid
is -1.
(virProcessRunInMountNamespace): Adjust caller.
* src/util/virfile.c (virFileAccessibleAs, virFileOpenForked)
(virDirCreate): Likewise.
* tools/virt-login-shell.c (main): Likewise.
* tools/virsh-domain.c (cmdLxcEnterNamespace): Likewise.
* tests/commandtest.c (test23): Likewise.
Signed-off-by: Eric Blake <eblake@redhat.com>
Right now, a caller waiting for a child process either requires
the child to have status 0, or must use WIFEXITED() and friends
itself. But in many cases, we want the middle ground of treating
fatal signals as an error, and directly accessing the normal exit
value without having to use WEXITSTATUS(), in order to easily
detect an expected non-zero exit status. This adds the middle
ground to the low-level virProcessWait; the next patch will add
it to virCommand.
* src/util/virprocess.h (virProcessWait): Alter signature.
* src/util/virprocess.c (virProcessWait): Add parameter.
(virProcessRunInMountNamespace): Adjust caller.
* src/util/vircommand.c (virCommandWait): Likewise.
* src/util/virfile.c (virFileAccessibleAs): Likewise.
* src/lxc/lxc_container.c (lxcContainerHasReboot)
(lxcContainerAvailable): Likewise.
* daemon/libvirtd.c (daemonForkIntoBackground): Likewise.
* tools/virt-login-shell.c (main): Likewise.
* tools/virsh-domain.c (cmdLxcEnterNamespace): Likewise.
* tests/testutils.c (virtTestCaptureProgramOutput): Likewise.
* tests/commandtest.c (test23): Likewise.
Signed-off-by: Eric Blake <eblake@redhat.com>
Similar to our event-test demo program, it's nice to be able to
have a mode where we can sniff all events at once, rather than
having to spawn multiple virsh in parallel with one for each
event type.
(Can I just say our RegisterAny design is lousy? The fact that
the majority of our callback pointers have a function signature
with the opaque data in a different position, and that we have
to cast the function signature before registering it, makes it
hard to write a generic callback function; we have to write one
for every type of event id. Life would have been easier if we
had designed the callback as a fixed signature with a void*
and size parameter, and then allowed the caller to downcast
the void* to a particular struct for data specific to their
callback id, where we could have then had a single function
with a switch statement for each event id, and register that
one function for all types of events. It would also be nicer
if the callback functions knew which callbackID was being used
when invoking that callback, so that I could use a common data
structure among all registrations instead of having to create
an array of one data per callback. But I really don't want to
go add yet another event API design.)
* tools/virsh-domain.c (cmdEvent): Add --all parameter; convert
all callbacks to support shared counter.
* tools/virsh.pod (event): Document it.
Signed-off-by: Eric Blake <eblake@redhat.com>
Earlier, I added 'virsh event' for lifecycle events, to get the
concept approved; this patch finishes the support for all other
events, although the user still has to register for one event
type at a time. A future patch may add an --all parameter to
make it possible to register for all events through a single
call.
* tools/virsh-domain.c (vshDomainEventWatchdogToString)
(vshDomainEventIOErrorToString, vshGraphicsPhaseToString)
(vshGraphicsAddressToString, vshDomainBlockJobStatusToString)
(vshDomainEventDiskChangeToString)
(vshDomainEventTrayChangeToString, vshEventGenericPrint)
(vshEventRTCChangePrint, vshEventWatchdogPrint)
(vshEventIOErrorPrint, vshEventGraphicsPrint)
(vshEventIOErrorReasonPrint, vshEventBlockJobPrint)
(vshEventDiskChangePrint, vshEventTrayChangePrint)
(vshEventPMChangePrint, vshEventBalloonChangePrint)
(vshEventDeviceRemovedPrint): New helper routines.
(cmdEvent): Support full array of event callbacks.
Signed-off-by: Eric Blake <eblake@redhat.com>
If user wants to grep some info from domain, e.g. disk paths:
# virsh -q domblklist win7 | awk '{print $2}'
Source
/var/lib/libvirt/images/windows.qcow2
/home/zippy/work/tmp/en_windows_7_professional_x64_dvd_X15-65805.iso
while with my change:
# virsh -q domblklist win7 | awk '{print $2}'
/var/lib/libvirt/images/windows.qcow2
/home/zippy/work/tmp/en_windows_7_professional_x64_dvd_X15-65805.iso
We don't print table header in other commands, like list.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
I noticed this while shortening switch statements via VIR_ENUM.
Basically, the only ways virAsprintf can fail are if we pass a
bogus format string (but we're not THAT bad) or if we run out
of memory (but it already warns on our behalf in that case).
Throw away the cruft that tries too hard to diagnose a printf
failure.
* tools/virsh-volume.c (cmdVolList): Simplify.
* tools/virsh-pool.c (cmdPoolList): Likewise.
Signed-off-by: Eric Blake <eblake@redhat.com>
Dan Berrange suggested that using VIR_ENUM_IMPL is more compact
than open-coding switch statements, and still just as forceful
at making us remember to update lists if we add enum values
in the future. Make this change throughout virsh.
Sure enough, doing this change caught that we missed at least
VIR_STORAGE_VOL_NETDIR.
* tools/virsh-domain-monitor.c (vshDomainIOErrorToString)
(vshDomainControlStateToString, vshDomainStateToString)
(vshDomainStateReasonToString): Change switch to enum lookup.
(cmdDomControl, cmdDominfo): Update caller.
* tools/virsh-domain.c (vshDomainVcpuStateToString)
(vshDomainEventToString, vshDomainEventDetailToString): Change
switch to enum lookup.
(vshDomainBlockJobToString, vshDomainJobToString): New functions.
(cmdVcpuinfo, cmdBlockJob, cmdDomjobinfo, cmdEvent): Update
callers.
* tools/virsh-network.c (vshNetworkEventToString): Change switch
to enum lookup.
* tools/virsh-pool.c (vshStoragePoolStateToString): New function.
(cmdPoolList, cmdPoolInfo): Update callers.
* tools/virsh-volume.c (vshVolumeTypeToString): Change switch to
enum lookup.
(cmdVolInfo, cmdVolList): Update callers.
Signed-off-by: Eric Blake <eblake@redhat.com>
I've noticed that in some cases systemd was quick enough and even
if libvirt-guests.service is marked to be started after the
libvirtd.service my guests were not resumed as
libvirt-guests.sh failed to connect. This is because of a
simple fact: systemd correctly starts libvirt-guests after it
execs libvirtd. However, the daemon is not able to accept
connections right from the start. It's doing some
initialization which may take ages. This problem is not limited
to systemd only, indeed. Any init system that is able to startup
services in parallel (e.g. OpenRC) may run into this situation.
The fix is to try connecting not only once, but continuously a few
times with a small sleep in between tries.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Add 'virsh net-event --list' and 'virsh net-event [net] --event=name
[--loop] [--timeout]'. Very similar to 'virsh event'.
* tools/virsh.pod (net-event): Document new command.
* tools/virsh-network.c (vshNetworkEventToString, vshNetEventData)
(vshEventLifecyclePrint, cmdNetworkEvent): New struct and
functions.
Signed-off-by: Eric Blake <eblake@redhat.com>
Add 'virsh event --list' and 'virsh event [dom] --event=name
[--loop] [--timeout]'. Borrows somewhat from event-test.c,
but defaults to a one-shot notification, and takes advantage
of the event loop integration to allow Ctrl-C to interrupt the
wait for an event. For now, this just does lifecycle events.
* tools/virsh.pod (event): Document new command.
* tools/virsh-domain.c (vshDomainEventToString)
(vshDomainEventDetailToString, vshDomEventData)
(vshEventLifecyclePrint, cmdEvent): New struct and functions.
Signed-off-by: Eric Blake <eblake@redhat.com>
I plan to add 'virsh event' to virsh-domain.c and 'virsh
net-event' to virsh-network.c; but as they will share quite
a bit of common boilerplate, it's better to set that up now
in virsh.c.
* tools/virsh.h (_vshControl): Add fields.
(vshEventStart, vshEventWait, vshEventDone, vshEventCleanup): New
prototypes.
* tools/virsh.c (vshEventFd, vshEventOldAction, vshEventInt)
(vshEventTimeout): New helper variables and functions.
(vshEventStart, vshEventWait, vshEventDone, vshEventCleanup):
Implement new functions.
(vshInit, vshDeinit, main): Manage event timeout.
Signed-off-by: Eric Blake <eblake@redhat.com>
Several virsh commands ask for a --timeout parameter in
seconds, then use it to control interfaces that operate on
millisecond limits; I also plan on adding a 'virsh event'
command that also does this. Factor this into a common
function.
* tools/virsh.h (vshCommandOptTimeoutToMs): New prototype.
* tools/virsh.c (vshCommandOptTimeoutToMs): New function.
* tools/virsh-domain.c (cmdBlockCommit, cmdBlockCopy)
(cmdBlockPull, cmdMigrate): Use it.
(vshWatchJob): Adjust timeout scale.
Signed-off-by: Eric Blake <eblake@redhat.com>
Recent autotest/virt-test testing on f20 discovered an anomaly in how
the bandwidth options are documented and used. This was discovered due
to a bug fix in the /sbin/tc utility found in iproute-3.11.0.1 (on f20)
in which overflow was actually caught and returned as an error. The fix
was first introduced in iproute-3.10 (search on iproute2 commit 'a303853e').
The autotest/virt-test test for virsh domiftune was attempting to send
the largest unsigned integer value (4294967295) for maximum value
testing. The libvirt xml implementation was designed to manage values
in kilobytes thus when this value was passed to /sbin/tc, it (now)
properly rejected the 4294967295kbps value.
Investigation of the problem discovered that formatdomain.html.in and
formatnetwork.html.in described the elements and property types slightly
differently, although they use the same code - virNetDevBandwidthParseRate()
(shared by portgroups, domains, and networks xml parsers). Rather than
have the descriptions in two places, this patch will combine and reword
the description under formatnetwork.html.in and have formatdomain.html.in
link to that description.
This documentation faux pas was continued into the virsh man page where
the bandwidth description for both 'attach-interface' and 'domiftune'
did not indicate the format of each value, thus leading to the test using
largest unsigned integer value assuming "bps" rather than "kbps", which
ultimately was wrong.
And provide domain summary stat in that case, for lxc backend.
Use case is a container inheriting all devices from the host,
e.g. when doing application containerization.
When start a guest with --pass-fd, if the argument of --pass-fd is invalid,
virsh will exit, but doesn't free the variable 'dom'.
The valgrind said:
...
==24569== 63 (56 direct, 7 indirect) bytes in 1 blocks are definitely lost in loss record 130 of 234
==24569== at 0x4C2A1D4: calloc (in /usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so)
==24569== by 0x4E879A4: virAllocVar (viralloc.c:544)
==24569== by 0x4EBD625: virObjectNew (virobject.c:190)
==24569== by 0x4F3A18A: virGetDomain (datatypes.c:226)
==24569== by 0x4F9311F: remoteDomainLookupByName (remote_driver.c:6636)
==24569== by 0x4F44F20: virDomainLookupByName (libvirt.c:2277)
==24569== by 0x12F616: vshCommandOptDomainBy (virsh-domain.c:105)
==24569== by 0x131C79: cmdStart (virsh-domain.c:3330)
==24569== by 0x12C4AB: vshCommandRun (virsh.c:1752)
==24569== by 0x127001: main (virsh.c:3218)
https://bugzilla.redhat.com/show_bug.cgi?id=1067338
Signed-off-by: Jincheng Miao <jmiao@redhat.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
For pool which relies on remote resources, such as a "iscsi" type
pool, since how long it takes to export the corresponding devices
to host's sysfs is really depended, it could depend on the network
connection, it also could depend on the host's udev procedures. So
it's likely that the volumes are not able to be detected during pool
starting process, polling the sysfs doesn't work, since we don't
know how much time is best for the polling, and even worse, the
volumes could still be not detected or partly not detected even after
the polling. So we end up with a documentation to prompt the fact,
in virsh manual.
And as a small improvement, let's explicitly say no LUNs found in
the debug log in that case.
Explicitly lists the possible values for "--target" option;
Gets rid of the confused strings like "Suspend-to-RAM";
Emphasises the node *has to* be suspended in the time duration
specified by "--duration". And rewords the entire document a
bit according to the API's implementation and document.
I noticed this problem when adding systemd support to netcf, because I
setup the configure.ac to automatically prefer using systemd over
initscripts when possible - although I had copied the
install-data-local target from the example of libvirt's
"libvirt-guests" service more or less verbatim, "make distcheck" would
fail because it was trying to install the service file directly into
/lib/systemd/system rather than into
/home/user/some/unimportant/name/lib/systemd/system.
This is caused by the install/uninstall rules for the systemd unit
files relying on $(DESTDIR) pointing the installed files to the right
place, but in reality $(DESTDIR) is empty during this part of make
distcheck - it instead sets $(prefix) with the toplevel directory used
for its test build/install/uninstall cycle.
(This problem hasn't been seen when running "make distcheck" in
libvirt because libvirt will never build/install systemd support
unless explicitly told to do so on the configure commandline, and
"make distcheck" doesn't put the "--with-initscript=..." option on the
configure commandline.)
I verified that the same problem does exist in libvirt by modifying
libvirt's configure.ac to set:
init_systemd=yes
with_init_script=systemd+redhat
This forces a build/install of the systemd unit files during
distcheck, which yields an error like this:
/usr/bin/install -c -m 644 virtlockd.service \
/lib/systemd/system/
libtool: install: warning: relinking `libvirt-qemu.la'
/usr/bin/install: cannot remove '/lib/systemd/system/virtlockd.service': Permission denied
make[4]: *** [install-systemd] Error 1
After adding $(prefix) to all the definitions of SYSTEMD_UNIT_DIR,
make distcheck now completes successfully with the modified
configure.ac, and the above lines change to something like this:
/usr/bin/install -c -m 644 virtlockd.service \
/home/laine/devel/libvirt/libvirt-1.2.1/_inst/lib/systemd/system/
Introduce Wireshark dissector plugin which adds support to Wireshark
for dissecting libvirt RPC protocol.
Added following files to build Wireshark dissector from libvirt source
tree.
* tools/wireshark/*: Source tree of Wireshark dissector plugin.
Added followings to configure.ac or Makefile.am.
configure.ac
* --with-wireshark-dissector: Enable support for building Wireshark
dissector.
* --with-ws-plugindir: Specify wireshark plugin directory that dissector
will installed.
* Added tools/wireshark/{Makefile,src/Makefile} to AC_CONFIG_FILES.
Makefile.am
* Added tools/wireshark/ to SUBDIR.
With this patch, user can setup the throttle blkio cgorup
for domain through the virsh cmd, such as:
virsh blkiotune domain1 --device-read-bytes-sec /dev/sda1,1000000,/dev/sda2,2000000
--device-write-bytes-sec /dev/sda1,1000000 --device-read-iops-sec /dev/sda1,10000
--device-write-iops-sec /dev/sda1,10000,/dev/sda2,0
This patch also add manpage for these new options.
Signed-off-by: Guan Qiang <hzguanqiang@corp.netease.com>
Signed-off-by: Gao feng <gaofeng@cn.fujitsu.com>
In a "for" loop there are created two new strings and they may not
be freed if a "target" string cannot be obtained. We have to free
the two created strings to prevent the memory leak.
This has been found by coverity.
John also pointed out that we should somehow care about the "type"
and "device" and Osier agreed to exit with error message if one of
them is set to NULL.
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Our fixes for CVE-2013-4400 were so effective at "fixing" bugs
in virt-login-shell that we ended up fixing it into a useless
do-nothing program.
Commit 3e2f27e1 picked the name LIBVIRT_SETUID_RPC_CLIENT for
the witness macro when we are doing secure compilation. But
commit 9cd6a57d checked whether the name IN_VIRT_LOGIN_SHELL,
from an earlier version of the patch series, was defined; with
the net result that virt-login-shell invariably detected that
it was setuid and failed virInitialize.
Commit b7fcc799 closed all fds larger than stderr, but in the
wrong place. Looking at the larger context, we mistakenly did
the close in between obtaining the set of namespace fds, then
actually using those fds to switch namespace, which means that
virt-login-shell will ALWAYS fail.
This is the minimal patch to fix the regressions, although
further patches are also worth having to clean up poor
semantics of the resulting program (for example, it is rude to
not pass on the exit status of the wrapped program back to the
invoking shell).
* tools/virt-login-shell.c (main): Don't close fds until after
namespace swap.
* src/libvirt.c (virGlobalInit): Use correct macro.
Signed-off-by: Eric Blake <eblake@redhat.com>
https://bugzilla.redhat.com/show_bug.cgi?id=1049529
The 'detach-disk' command in virsh used the active XML definition of a
domain even when attempting to remove a disk from the config only. If
the disk was only in the inactive definition the operation failed. Fix
this by using the inactive XML in case that only the config is affected.
https://bugzilla.redhat.com/show_bug.cgi?id=1049529
The legacy virDomainAttachDevice and virDomainDetachDevice operate only
on active domains. When a user specified --current flag with an inactive
domain the old API was used and reported an error. Fix it by calling the
new API if --current is specified explicitly.
https://bugzilla.redhat.com/show_bug.cgi?id=1044806
Currently, sending the ANSI_A keycode from os_x codepage doesn't work as
it has a special value of 0x0. Our internal code handles that no
different to other not defined keycodes. Hence, in order to allow it we
must change all the undefined keycodes from 0 to -1 and adapt some code
too.
# virsh send-key guestname --codeset os_x ANSI_A
error: invalid keycode: 'ANSI_A'
# virsh send-key guestname --codeset os_x ANSI_B
# virsh send-key guestname --codeset os_x ANSI_C
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
I noticed a few odd things in 'virt-login-shell --help' output.
* tools/virt-login-shell.c (usage): At most one option accepted,
drop trailing colon.
Signed-off-by: Eric Blake <eblake@redhat.com>
Recent addition of the gluster pool type omitted fixing the virsh and
virConnectListAllStoragePool filters. A typecast of the converting
function in virsh showed that also the sheepdog pool was omitted in the
command parser.
This patch adds gluster pool filtering support and fixes virsh to
properly convert all supported storage pool types. The added typecast
should avoid doing such mistakes in the future.
https://bugzilla.redhat.com/show_bug.cgi?id=1044445
When undefining a VM with storage the man page doesn't explicitly
mention that the volumes need to be a part of the storage pool otherwise
it won't work.
Adding output to 'virsh --version=long' makes it easier to
tell if a distro built with particular libraries (it doesn't
tell you what a remote libvirtd is built with, but is still
better than nothing). But we forgot to mention gluster.
* tools/virsh.c (vshShowVersion): Add gluster witness.
Signed-off-by: Eric Blake <eblake@redhat.com>
Though trying to destroy a physical HBA doesn't make sense at all,
it's still a bit misleading with saying "only works for HBA".
Signed-off-by: Osier Yang <jyang@redhat.com>
Based on a suggestion from Mauricio Tavares.
* tools/virsh-domain.c (cmdDetachInterface, vshFindDisk): Improve
wording.
Signed-off-by: Eric Blake <eblake@redhat.com>
In the 'directory' and 'netfs' storage pools, a user can see
both 'file' and 'dir' storage volume types, to know when they
can descend into a subdirectory. But in a network-based storage
pool, such as the upcoming 'gluster' pool, we use 'network'
instead of 'file', and did not have any counterpart for a
directory until this patch. Adding a new volume type
'network-dir' is better than reusing 'dir', because it makes
it clear that the only way to access 'network' volumes within
that container is through the network mounting (leaving 'dir'
for something accessible in the local file system).
* include/libvirt/libvirt.h.in (virStorageVolType): Expand enum.
* docs/formatstorage.html.in: Document it.
* docs/schemasa/storagevol.rng (vol): Allow new value.
* src/conf/storage_conf.c (virStorageVol): Use new value.
* src/qemu/qemu_command.c (qemuBuildVolumeString): Fix client.
* src/qemu/qemu_conf.c (qemuTranslateDiskSourcePool): Likewise.
* tools/virsh-volume.c (vshVolumeTypeToString): Likewise.
* src/storage/storage_backend_fs.c
(virStorageBackendFileSystemVolDelete): Likewise.
Signed-off-by: Eric Blake <eblake@redhat.com>
Most of our code base uses space after comma but not before;
fix the remaining uses before adding a syntax check.
* tests/sysinfotest.c: Consistently use commas.
* tests/viratomictest.c: Likewise.
* tests/vircgroupmock.c: Likewise.
* tools/virsh-domain.c: Likewise.
* tools/virsh-volume.c: Likewise.
Signed-off-by: Eric Blake <eblake@redhat.com>
All *-info virsh commands output a list of colon-seperated key-val pairs.
But virsh net-info command misses this colon for key "Name" and "UUID".
Signed-off-by: Hao Liu <hliu@redhat.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
This patch shuts up the following warning of clang
on Mac OS X:
virsh.c:2761:22: error: assigning to 'char *' from 'const char [6]' discards qualifiers
[-Werror,-Wincompatible-pointer-types-discards-qualifiers]
rl_readline_name = "virsh";
^ ~~~~~~~
The warning happens because rl_readline_name on Mac OS X comes
from an old readline header that still uses 'char *', while it
is 'const char *' in readline 4.2 (April 2001) and newer.
Tested on Mac OS X 10.8.5 (clang-500.2.75) and Fedora 19 (gcc 4.8.1).
Signed-off-by: Ryota Ozaki <ozaki.ryota@gmail.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
Before:
$ virsh iface-list
Name State MAC Address
--------------------------------------------
br0 active f0🇩🇪f1:dc:b8:b0
virbr2 active 52:54:00:61:78:0c
After:
$ virsh iface-list
Name State MAC Address
---------------------------------------------------
br0 active f0🇩🇪f1:dc:b8:b0
virbr2 active 52:54:00:61:78:0c
Change the alignment to match the domain listing function.
Before:
$ virsh pool-list
Name State Autostart
-----------------------------------------
boot-scratch active no
default active no
glusterpool active no
$ virsh pool-list --details
Name State Autostart Persistent Capacity Allocation Available
-------------------------------------------------------------------------------
boot-scratch running no yes 117.99 GiB 101.40 GiB 16.60 GiB
default running no yes 117.99 GiB 101.40 GiB 16.60 GiB
glusterpool running no yes 29.40 GiB 44.23 MiB 29.36 GiB
After:
$ virsh pool-list
Name State Autostart
-------------------------------------------
boot-scratch active no
default active no
glusterpool active no
$ virsh pool-list --details
Name State Autostart Persistent Capacity Allocation Available
---------------------------------------------------------------------------------
boot-scratch running no yes 117.99 GiB 101.40 GiB 16.60 GiB
default running no yes 117.99 GiB 101.40 GiB 16.60 GiB
glusterpool running no yes 29.40 GiB 44.23 MiB 29.36 GiB
There were two separate places with that were stringifying type of a
volume. One of the places was out of sync with types implemented
upstream.
To avoid such problems in the future, this patch adds a common function
to convert the type to string and reuses it across the two said places.
Add an extra space before the first column as we have when listing
domains.
Previous output:
$ virsh vol-list glusterpool
Name Path
-----------------------------------------
asdf gluster://gluster-node-1/gv0/asdf
c gluster://gluster-node-1/gv0/c
cd gluster://gluster-node-1/gv0/cd
$ virsh vol-list glusterpool --details
Name Path Type Capacity Allocation
----------------------------------------------------------------------
asdf gluster://gluster-node-1/gv0/asdf unknown 0.00 B 0.00 B
c gluster://gluster-node-1/gv0/c unknown 16.00 B 16.00 B
cd gluster://gluster-node-1/gv0/cd unknown 0.00 B 0.00 B
New output:
$ virsh vol-list glusterpool
Name Path
------------------------------------------------------------------------------
asdf gluster://gluster-node-1/gv0/asdf
c gluster://gluster-node-1/gv0/c
cd gluster://gluster-node-1/gv0/cd
$ virsh vol-list glusterpool --details
Name Path Type Capacity Allocation
------------------------------------------------------------------------
asdf gluster://gluster-node-1/gv0/asdf unknown 0.00 B 0.00 B
c gluster://gluster-node-1/gv0/c unknown 16.00 B 16.00 B
cd gluster://gluster-node-1/gv0/cd unknown 0.00 B 0.00 B
The 'vcpucount' command is a getter command for the vCPUu count. When
one or more of the filtering flags are specified the command returns the
value only for the selected combination. In this case the --live and
--config combination isn't valid. This however didn't cause errors as
the combination of flags was rejected by the libvirt API but then the
fallback code kicked in and requested the count in a way where the clash
of the flags didn't matter.
Mark the flag combination mutually exclusive so that users aren't
confused.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1024245
Allow adjust the number of commands to remember in the command
history.
* tools/virsh.c (vshReadlineInit): Read and sanity the
VIRSH_HISTSIZE variable.
(VIRSH_HISTSIZE_MAX): New constant.
* tools/virsh.pod: Document VIRSH_HISTSIZE variable.
Signed-off-by: Eric Blake <eblake@redhat.com>
Commit e962a57 added 'attach-disk --shareable', even though we
already had 'attach-disk --mode=shareable'. Worse, if the user
types 'attach-disk --mode=readonly --shareable', we create
non-sensical XML. The best solution is just to undocument the
duplicate spelling, by having it fall back to the preferred
spelling.
* tools/virsh-domain.c (cmdAttachDisk): Let alias handling fix our
mistake in exposing a second spelling for an existing option.
* tools/virsh.pod: Fix documentation.
Signed-off-by: Eric Blake <eblake@redhat.com>
We want to treat 'attach-disk --shareable' as an undocumented
alias for 'attach-disk --mode=shareable'. By improving our
alias handling, we can allow all such --bool -> --opt=value
replacements, and guarantee up front that the alias is not
mixed with its replacement.
* tools/virsh.c (vshCmddefOptParse, vshCmddefGetOption): Add
support for expanding bool alias to --opt=value.
(opts_echo): Add another alias to test it.
* tests/virshtest.c (mymain): Test it.
Signed-off-by: Eric Blake <eblake@redhat.com>
In commit b46c4787dd I changed the code to
watch long running jobs in virsh. Unfortunately I didn't take into
account that poll may get a hangup if the terminal is not a TTY and will
be closed.
This patch avoids polling the STDIN fd when there's no TTY.
Unconditional use of getenv is not secure in setuid env.
While not all libvirt code runs in a setuid env (since
much of it only exists inside libvirtd) this is not always
clear to developers. So make all the code paranoid, even
if it only ever runs inside libvirtd.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
The virt-login-shell binary shouldn't need to execute programs
relying on $PATH, but just in case set a fixed $PATH value
of /bin:/usr/bin
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
The libvirt.so library has far too many library deps to allow
linking against it from setuid programs. Those libraries can
do stuff in __attribute__((constructor) functions which is
not setuid safe.
The virt-login-shell needs to link directly against individual
files that it uses, with all library deps turned off except
for libxml2 and libselinux.
Create a libvirt-setuid-rpc-client.la library which is linked
to by virt-login-shell. A config-post.h file allows this library
to disable all external deps except libselinux and libxml2.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
We don't want to inherit any FDs in the new namespace
except for the stdio FDs. Explicitly close them all,
just in case some do not have the close-on-exec flag
set.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
'--print-xml' option is very useful for doing some test.
But we had to specify a real domain for it.
This patch could enable us to specify a fake domain
when using --print-xml option.
Signed-off-by: Chen Hanxiao <chenhanxiao@cn.fujitsu.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
The parameter allows overriding default listen address for '-incoming'
cmd line argument on destination.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Make it much easier to test a configuration built without readline
support, by reusing our existing library probe machinery. It gets
a bit tricky with readline, which does not provide a pkg-config
snippet, and which on some platforms requires one of several
terminal libraries as a prerequiste, but the end result should be
the same default behavior but now with the option to disable things.
* m4/virt-readline.m4 (LIBVIRT_CHECK_READLINE): Simplify by using
LIBVIRT_CHECK_LIB.
* tools/virsh.c: Convert USE_READLINE to WITH_READLINE.
Signed-off-by: Eric Blake <eblake@redhat.com>
'make distcheck' fails from a directory configured --without-lxc:
GEN virt-login-shell.1
Can't write-open ../../tools/virt-login-shell.1: Permission denied at /usr/bin/pod2man line 69.
* tools/Makefile.am (EXTRA_DIST): Ship pre-built man page.
Signed-off-by: Eric Blake <eblake@redhat.com>
It's possible to create a domain which will only use a TLS port
and will not have a non-TLS port set by using:
<graphics type='spice' autoport='yes' defaultMode='secure'/>
In such a setup, the 'graphics' node for the running domain will be:
<graphics type='spice' tlsPort='5900'
autoport='yes' listen='127.0.0.1'
defaultMode='secure'>
However, cmdDomDisplay loops over all the 'graphics' node, and it
ignores nodes which don't have a 'port' attribute. This means
'virsh domdisplay' will only return an empty string for domains
as the one above.
This commit looks for both 'port' and 'tlsPort' before deciding
to ignore a graphics node. It also makes sure 'port' is not printed
when it's not set.
This makes 'virsh domdisplay' return
'spice://127.0.0.1?tls-port=5900' for domains using only a TLS
port.
Signed-off-by: Christophe Fergeau <cfergeau@redhat.com>
After commit 8aecd35126 it'll detect
that a required option is not defined and it will assert and exit with:
virsh.c:1364: vshCommandOpt: Assertion `valid->name' failed.
Problem has been latent since commit ed23b106.
Signed-off-by: Eric Blake <eblake@redhat.com>
completer and completer_flags added to the _vshCmdOptDef
structure so it will be possible for completion generators to
conveniently call option completer functions with desired flags.
Signed-off-by: Eric Blake <eblake@redhat.com>
Some systems apparently have a global variable/function called remove
and thus break compilation of virsh-domain.c. Rename the variable to
avoid this.
Reported by GuanQiang.
Since the maxvcpus command query the maximum number of virtual
CPUs supported for a guest VM on this connection, it should be
in virsh-host.c but not virsh-domain.c.
Signed-off-by: yangdongsheng <yangds.fnst@cn.fujitsu.com>
https://bugzilla.redhat.com/show_bug.cgi?id=1006864
Commit 38ab1225 changed the default value of ret from true to false but
forgot to set ret = true when job is NONE. Thus, virsh domjobinfo
returned 1 when there was no job running for a domain but it used to
(and should) return 0 in this case.
The VIR_FREE() macro will cast away any const-ness. This masked a
number of places where we passed a 'const char *' string to
VIR_FREE. Fortunately in all of these cases, the variable was not
in fact const data, but a heap allocated string. Fix all the
variable declarations to reflect this.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Recent patches to fix handling of Ctrl-C when interacting with
ssh are not portable to mingw, which lacks termios handling.
The simplest solution is to just compile that code out, and
if someone ever appears that has a serious interest in getting
virsh fully functional even with ssh connections, they can
provide patches at that time.
* tools/virsh.h (_vshControl): Make termattr conditional.
* tools/virsh.c (vshTTYIsInterruptCharacter)
(vshTTYDisableInterrupt, vshTTYRestore, cfmakeraw, vshTTYMakeRaw)
(main): Likewise.
Signed-off-by: Eric Blake <eblake@redhat.com>
Automake has builtin support to prevent botched conditional nesting,
but only if you use:
if FOO
else !FOO
endif !FOO
An example error message when using the wrong name:
daemon/Makefile.am:378: error: else reminder (LIBVIRT_INIT_SCRIPT_SYSTEMD_TRUE) incompatible with current conditional: LIBVIRT_INIT_SCRIPT_SYSTEMD_FALSE
daemon/Makefile.am:381: error: endif reminder (LIBVIRT_INIT_SCRIPT_SYSTEMD_TRUE) incompatible with current conditional: LIBVIRT_INIT_SCRIPT_SYSTEMD_FALSE
As our makefiles tend to have quite a bit of nested conditionals,
it's better to take advantage of the benefits of the build system
double-checking that our conditionals are well-nested, but that
requires a syntax check to enforce our usage style.
Alas, unlike C preprocessor and spec files, we can't use indentation
to make it easier to see how deeply nesting goes.
* cfg.mk (sc_makefile_conditionals): New rule.
* daemon/Makefile.am: Enforce the style.
* gnulib/tests/Makefile.am: Likewise.
* python/Makefile.am: Likewise.
* src/Makefile.am: Likewise.
* tests/Makefile.am: Likewise.
* tools/Makefile.am: Likewise.
Signed-off-by: Eric Blake <eblake@redhat.com>
The vshWatchJob function registers a SIGINT handler that is used to
abort the active job and does not terminate virsh. Unfortunately, this
breaks when using the ssh transport as SIGINT is sent to the foreground
process group including the ssh transport processes which terminate.
This breaks the connection and migration is left in a insane state.
With this patch the terminal is modified to ignore key binding that
sends SIGINT and does the handling manually.
Resoves: https://bugzilla.redhat.com/show_bug.cgi?id=983348
This patch adds instrumentation to allow modification of config of the
terminal in virsh and successful reset of the state afterwards.
The added helpers allow to disable receiving of SIGINT when pressing the
key sequence (Ctrl+C usualy). This normally sends SIGINT to the
foreground process group which kills ssh processes used for transport of
the data.
When virBufferError is ok in cmdAttachDisk, the latter
should 'goto cleanup', instead of returning a false to
prevent memory leaking.
Signed-off-by: Eric Blake <eblake@redhat.com>
I noticed from an ./autobuild.sh run that we were installing a
virt-login-shell.exe binary when cross-building for mingw,
even though such a binary is necessarily worthless since the
code depends on lxc which is a Linux-only concept.
* tools/Makefile.am (conf_DATA, bin_PROGRAMS, dist_man1_MANS):
Make virt-login-shell installation conditional.
Signed-off-by: Eric Blake <eblake@redhat.com>
Noticed while reviewing another patch that had an accidental
mismatch due to refactoring. An audit of the code showed that
very few callers of vshCommandOpt were expecting a return of
-2, indicating programmer error, and of those that DID check,
they just propagated that status to yet another caller that
did not check. Fix this by making the code blatantly warn
the programmer, rather than silently ignoring it and possibly
doing the wrong thing downstream.
I know that we frown on assert()/abort() inside libvirtd
(libraries should NEVER kill the program that linked them),
but as virsh is an app rather than the library, and as this
is not the first use of assert() in virsh, I think this
approach is okay.
* tools/virsh.h (vshCommandOpt): Drop declaration.
* tools/virsh.c (vshCommandOpt): Make static, and add a
parameter. Abort on programmer errors rather than making callers
repeat that logic.
(vshCommandOptInt, vshCommandOptUInt, vshCommandOptUL)
(vshCommandOptString, vshCommandOptStringReq)
(vshCommandOptLongLong, vshCommandOptULongLong)
(vshCommandOptBool): Adjust callers.
Signed-off-by: Eric Blake <eblake@redhat.com>
Surprisingly, augtool get (or print) returns "path = value" while we are
only interested in the value. We need to remove the "path = " part from
the augtool's output. The following is an example of the augtool command
as used in virt-sanlock-cleanup script:
$ augtool get /files/etc/libvirt/qemu-sanlock.conf/disk_lease_dir
/files/etc/libvirt/qemu-sanlock.conf/disk_lease_dir = /var/lib/libvirt/sanlock
Commit a0b6a36f "fixed" what abfff210 broke (URI precedence), but
there was still one more thing missing to fix. When using virsh
parameters to setup debugging, those weren't honored, because at the
time debugging was initializing, arguments weren't parsed yet. To
make ewerything work as expected, we need to initialize the debugging
twice, once before debugging (so we can debug option parsing properly)
and then again after these options are parsed.
As a side effect, this patch also fixes a leak when virsh is ran with
multiple '-l' parameters.
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
Since 785ff34bf8 we are using the outputStr variable in cleanup label.
However, there is a possibility to jump to the label before the variable
has been declared:
virsh-pool.c: In function 'cmdPoolList':
virsh-pool.c:1121:25: error: jump skips variable initialization [-Werror=jump-misses-init]
goto asprintf_failure;
^
virsh-pool.c:1308:1: note: label 'asprintf_failure' defined here
asprintf_failure:
^
virsh-pool.c:1267:11: note: 'outputStr' declared here
char *outputStr = NULL;
VIR_FREE(caps) is not enough to free an array allocated
by vshStringToArray.
==17== 4 bytes in 1 blocks are definitely lost in loss record 4 of 728
==17== by 0x4EFFC44: virStrdup (virstring.c:554)
==17== by 0x128B10: _vshStrdup (virsh.c:125)
==17== by 0x129164: vshStringToArray (virsh.c:218)
==17== by 0x157BB3: cmdNodeListDevices (virsh-nodedev.c:409)
https://bugzilla.redhat.com/show_bug.cgi?id=1001536
==23== 41 bytes in 1 blocks are definitely lost in loss record 626 of 727
==23== by 0x4F0099F: virAsprintfInternal (virstring.c:358)
==23== by 0x15D2C9: cmdPoolList (virsh-pool.c:1268)
https://bugzilla.redhat.com/show_bug.cgi?id=1001536
virsh secret-list leak when no secrets are defined:
==27== 8 bytes in 1 blocks are definitely lost in loss record 6 of 726
==27== by 0x4E941DD: virAllocN (viralloc.c:183)
==27== by 0x5037F1A: remoteConnectListAllSecrets (remote_driver.c:3076)
==27== by 0x5004EC6: virConnectListAllSecrets (libvirt.c:16298)
==27== by 0x15F813: vshSecretListCollect (virsh-secret.c:397)
==27== by 0x15F0E1: cmdSecretList (virsh-secret.c:532)
And so do some other *-list commands.
https://bugzilla.redhat.com/show_bug.cgi?id=1001536
The messages were only freed on error.
==12== 1,100 bytes in 1 blocks are definitely lost in loss record 698 of 729
==12== by 0x4E98C22: virBufferAsprintf (virbuffer.c:294)
==12== by 0x12C950: vshOutputLogFile (virsh.c:2440)
==12== by 0x12880B: vshError (virsh.c:2254)
==12== by 0x131957: vshCommandOptDomainBy (virsh-domain.c:109)
==12== by 0x14253E: cmdStart (virsh-domain.c:3333)
https://bugzilla.redhat.com/show_bug.cgi?id=1001536
virsh cpu-stats guest --start 0 --count 3
It outputs right but the return value is 1 rather than 0
echo $?
1
Found by running libvirt-autotest
./run -t libvirt --tests virsh_cpu_stats
Commit abfff210 changed the order of vshParseArgv() and vshInit() in
order to make fix debugging of parameter parsing. However, vshInit()
did a vshReconnect() even though ctl->name wasn't set according to the
'-c' parameter yet. In order to keep both issues fixed, I've split
the vshInit() into vshInitDebug() and vshInit().
One simple memleak of ctl->name is fixed as a part of this patch,
since it is related to the issue it's fixing.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=999323
When using virsh secret-list - if the secret types are cephx or iscsi,
then allow fetch/print of the usage information. Prior to the change
the following would print:
UUID Usage
-----------------------------------------------------------
1b40a534-8301-45d5-b1aa-11894ebb1735 Unused
a5ba3efe-6adf-4a6a-b243-f010a043e314 Unused
Afterwards:
UUID Usage
-----------------------------------------------------------
1b40a534-8301-45d5-b1aa-11894ebb1735 ceph ceph_example
a5ba3efe-6adf-4a6a-b243-f010a043e314 iscsi libvirtiscsi
Use the new semantics of vshStringToArray to avoid leaking the array of
volumes to be deleted. The array would be leaked in case the first
volume was found in the domain definition. Also refactor the code a bit
to sanitize naming of variables hoding arrays and dimensions of the
arrays.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=996050
At a slightly larger memory expense allow stealing of items from the
string array returned from vshStringToArray and turn the result into a
string list compatible with virStringSplit. This will allow to use the
common dealloc function.
This patch also fixes a few forgotten checks of return from
vshStringToArray and one memory leak.
We were failing to autoprobe which schema to use for several
top-level XML elements.
* tools/virt-xml-validate.in (TYPE): Recognize <domainsnapshot>,
<filter>, and <secret>.
Signed-off-by: Eric Blake <eblake@redhat.com>
All good tools should have --help and --version output :)
Furthermore, we want to ensure a failed exit if xmllint fails,
or even for 'virt-xml-validate > /dev/full'.
* tools/virt-xml-validate.in: Add option parsing. Output errors
to stderr. Update documentation to match.
* tools/Makefile.am (virt-xml-validate): Substitute version.
Signed-off-by: Eric Blake <eblake@redhat.com>
Currently the virConnectBaselineCPU API does not expose the CPU features
that are part of the CPU's model. This patch adds a new flag,
VIR_CONNECT_BASELINE_CPU_EXPAND_FEATURES, that causes the API to explicitly
list all features that are part of that model.
Signed-off-by: Don Dugger <donald.d.dugger@intel.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
https://bugzilla.redhat.com/show_bug.cgi?id=997765
==1349431== 8 bytes in 1 blocks are definitely lost in loss record 11 of 760
==1349431== at 0x4C2A554: calloc (vg_replace_malloc.c:593)
==1349431== by 0x4E9AA3E: virAllocN (in /usr/lib64/libvirt.so.0.1001.1)
==1349431== by 0x4EF28C4: virXPathNodeSet (in /usr/lib64/libvirt.so.0.1001.1)
==1349431== by 0x130B83: cmdCPUBaseline (in /usr/bin/virsh)
==1349431== by 0x12C608: vshCommandRun (in /usr/bin/virsh)
==1349431== by 0x12889A: main (in /usr/bin/virsh)
Address a number of code, style and docs issues identified
in review of virt-login-shell after it was merged.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
To avoid having to assign a failure code to the returned variable switch
this function to negative logic. This will fix issue with invalid number
of cpus returning success return code.
https://bugzilla.redhat.com/show_bug.cgi?id=996466
I attempted 'virsh blockcopy $dom vda $path --wait --verbose', then
hit Ctrl-C; I was a bit surprised to see this error message:
Block Copy: [ 3 %]error: failed to query job for disk vda
when I had been expecting:
Block Copy: [ 3 %]
Copy aborted
* tools/virsh-domain.c (cmdBlockCopy): Print graceful exit message
rather than error when ctrl-c interrupts job.
Signed-off-by: Eric Blake <eblake@redhat.com>
The virLoginShellAllowedUser method must not free the 'groups'
parameter it is given, as that is owned by the caller.
The virLoginShellAllowedUser method should be checking
'!*ptr' (ie empty string) rather than '!ptr' (NULL string)
since the latter cannot be true.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
virt-login-shell.c was failing to compile with
CC virt_login_shell-virt-login-shell.o
virt-login-shell.c: In function 'main':
virt-login-shell.c:205:5: error: implicit declaration of function 'setlocale' [-Werror=implicit-function-declaration]
virt-login-shell.c:205:5: error: nested extern declaration of 'setlocale' [-Werror=nested-externs]
virt-login-shell.c:205:20: error: 'LC_ALL' undeclared (first use in this function)
Add a virt-login-shell binary that can be set as a user's
shell, such that when they login, it causes them to enter
the LXC container with a name matching their user name.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
The VIR_DOMAIN_PAUSED_GUEST_PANICKED constant is badly named,
leaking the QEMU event name. Elsewhere in the API we use
'CRASHED' rather than 'PANICKED', and the addition of 'GUEST'
is redundant since all events are guest related.
Thus rename it to VIR_DOMAIN_PAUSED_CRASHED, which matches
with VIR_DOMAIN_RUNNING_CRASHED and VIR_DOMAIN_EVENT_CRASHED.
It was added in commit 14e7e0ae8d
which post-dates v1.1.0, so is safe to rename before 1.1.1
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
The VIR_DOMAIN_SHUTDOWN_CRASHED state constant does not appear
to be used in the QEMU code anyway. It also doesn't make much
(any) sense, since the 'shutdown' state is a transient state
between 'running' and 'shutoff' and when a guest crashes, it
does not end up in a 'shutdown' state, only 'shutoff'.
It was added in commit 14e7e0ae8d
which post-dates v1.1.0, so is safe to remove before 1.1.1
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Noticed that the expected "not supported" error is dropped when
invoking 'virsh snapshot-list dom' on a Xen installation running
the libxl driver
virsh snapshot-list test
error: Invalid snapshot: virDomainSnapshotFree
The error is overwritten by a call to virDomainSnapshotFree
in cleanup code within cmdSnapshotList. Prevent overwritting
the real error by not calling virDomainSnapshotFree with a NULL
virDomainSnapshotPtr.
Resolves:https://bugzilla.redhat.com/show_bug.cgi?id=923053
When cdrom is block type, the virsh change-media failed to insert
source info because virsh uses "<source block='/dev/sdb'/>" while
the correct name of the attribute for block disks is "dev".
Add a "--pass-fds N,M,..." arg to the virsh start/create
methods. This allows pre-opened file descriptors from the
shell to be passed on into the guest
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Use the virDomainSetMemoryStatsPeriodFlags() to pass a period defined by
usage of a new --period option in order to set the collection period for the
balloon driver. This may enable or disable the collection based on the value.
Add the --current, --live, & --config options to dommemstat.
Recent changes uncovered FORWARD_NULL and NEGATIVE_RETURNS problems with
the processing of the 'ndevices' and its associated allocated arrays in
'vshNodeDeviceListCollect' due to the possibility of returning -1 in a
call and using the returned value as a for loop index end condition.
Recent changes uncovered FORWARD_NULL and NEGATIVE_RETURNS problems with
the processing of the 'nActiveIfaces' and 'nInactiveIfaces' and their
associated allocated arrays in 'vshInterfaceListCollect' due to the
possibility of returning -1 in a call and using the return value as a
for loop index end condition.
Convert the type of loop iterators named 'i', 'j', k',
'ii', 'jj', 'kk', to be 'size_t' instead of 'int' or
'unsigned int', also santizing 'ii', 'jj', 'kk' to use
the normal 'i', 'j', 'k' naming
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Actually, I'm turning this function into a macro as filename,
function name and line number needs to be passed. The new
function virAsprintfInternal is introduced with the extended set
of arguments.
Free the old XML strings before overwriting them if the user
has chosen to reedit the file or force the redefinition.
Found by Alex Jia trying to reproduce another bug:
https://bugzilla.redhat.com/show_bug.cgi?id=977430#c3
Paolo Bonzini pointed out that it's actually possible to migrate a qemu
instance that was paused due to I/O error and it will be able to work on
the destination if the storage is accessible.
This patch introduces flag VIR_MIGRATE_ABORT_ON_ERROR that cancels the
migration in case an I/O error happens while it's being performed and
allows migration without this flag. This flag can be possibly used for
other error reasons that may be introduced in the future.
This patch fixes changes done in commit 29c1e913e4
that was pushed without implementing review feedback.
The flag introduced by the patch is changed to VIR_DOMAIN_VCPU_GUEST and
documentation makes the difference between regular hotplug and this new
functionality more explicit.
The virsh options that enable the use of the new flag are changed to
"--guest" and the documentation is fixed too.
This flag will allow to use qemu guest agent commands to disable
(offline) and enable (online) processors in a live guest that has the
guest agent running.
Our documentation says a pool may be referenced by its name or UUID
anywhere if it makes sense (pool-name and pool-uuid are the only
exceptions). However, vol-create and vol-create-as commands did not obey
this.
Because it's a valid combination. p2p still uses a separate channel
for qemu migration, so there's value in letting the user specify a manual
migrate URI for overriding auto-port, or libvirt's FQDN lookup.
What _isn't_ allowed is --migrateuri and TUNNELLED, since there is
no separate migration channel. Disallow that instead
I noticed several unusual spacings in for loops, and decided to
fix them up. See the next commit for the syntax check that found
all of these.
* examples/domsuspend/suspend.c (main): Fix spacing.
* python/libvirt-override.c: Likewise.
* src/conf/interface_conf.c: Likewise.
* src/security/virt-aa-helper.c: Likewise.
* src/util/virconf.c: Likewise.
* src/util/virhook.c: Likewise.
* src/util/virlog.c: Likewise.
* src/util/virsocketaddr.c: Likewise.
* src/util/virsysinfo.c: Likewise.
* src/util/viruuid.c: Likewise.
* src/vbox/vbox_tmpl.c: Likewise.
* src/xen/xen_hypervisor.c: Likewise.
* tools/virsh-domain-monitor.c (vshDomainStateToString): Drop
default case, to let compiler check us.
* tools/virsh-domain.c (vshDomainVcpuStateToString): Likewise.
Signed-off-by: Eric Blake <eblake@redhat.com>
Introduced by commit 1daa4ba33a. vshCommandOptStringReq returns
0 on *success* or the option is not required && not present, both
are right result. Error out when returning 0 is not correct.
the caller, it doesn't have to check wether it
Don't print 'OPTION' if there's no options. Just behaves as DESCRIPTION
does.
This mostly affects 'interface' command group.
Signed-off-by: Zhang Xiaohe <zhangxh@cn.fujitsu.com>
Reported-by: Li Yang <liyang.fnst@cn.fujitsu.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
Automake already passes all CFLAGS to the linker too, so it
is not necessary to set WARN_LDFLAGS in addition to the
WARN_CFLAGS variable.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
These all existed before virfile.c was created, and for some reason
weren't moved.
This is mostly straightfoward, although the syntax rule prohibiting
write() had to be changed to have an exception for virfile.c instead
of virutil.c.
This movement pointed out that there is a function called
virBuildPath(), and another almost identical function called
virFileBuildPath(). They really should be a single function, which
I'll take care of as soon as I figure out what the arglist should look
like.
Recent commit '53531e16' resulted in a new Coverity warning regarding
a missing break in the ':' options processing. Adjust the commit to
avoid the issue.
The source code base needs to be adapted as well. Some files
include virutil.h just for the string related functions (here,
the include is substituted to match the new file), some include
virutil.h without any need (here, the include is removed), and
some require both.
Mention file/volume contents instead of just 'file'/'volume'.
Also change Download->download in vol-download help,
to be consistent with other volume commands.
https://bugzilla.redhat.com/show_bug.cgi?id=955537
For long options, print:
* the option as specified by the user if it's unknown
* the canonical long option if its argument is not
a number (and should be)
And for missing arguments, print both the short and
the long option name.
(Doing only one of those would require either parsing
argv ourselves or let getopt print the errors, since
we can't tell long and short options apart by optopt
or longindex)
https://bugzilla.redhat.com/show_bug.cgi?id=949373
Unsupported long option:
$ virsh --pm
Before:
error: unsupported option '-
After:
error: unsupported option '--pm'. See --help.
Missing parameter:
$ virsh --deb
Before:
error: option '-d' requires an argument
After:
error: option '-d'/'--debug' requires an argument
$ virsh -rd
Before:
error: option '-d' requires an argument
After:
error: option '-d'/'--debug' requires an argument
Non-numeric parameter:
$ virsh --deb duck
Before:
error: option -d takes a numeric argument
After:
error: option --debug takes a numeric argument
'virsh help | grep nodedev-det' shows only nodedev-detach, but
'virsh help nodedev | grep nodedev-det' also shows the old alias
nodedev-dettach that we intentionally hid in commit af3f9aab.
See also commit 787f4fe and this bug report:
https://bugzilla.redhat.com/show_bug.cgi?id=956966
* tools/virsh.c (vshCmdGrpHelp): Copy suppression of vshCmdHelp.
Signed-off-by: Eric Blake <eblake@redhat.com>
The virsh nodedev-detach command has a new --driver option. If it's
given virsh will attempt to use the new virNodeDeviceDetachFlags API
instead of virNodeDeviceDettach. Validation of the driver name string
is left to the hypervisor (qemu accepts "kvm" or "vfio". The only
other hypervisor that implements these functions is xen, and it only
accepts NULL).
This patch factors out the vCPU count retrieval including fallback means
into vshCPUCountCollect() and removes the duplicated code to retrieve
individual counts.
The --current flag (this flag is assumed by default) now works also with
--maximum or --active without the need to explicitly specify the state
of the domain that is requested.
This patch also fixes the output of "virsh vcpucount domain" on inactive
domains:
Before:
$ virsh vcpucount domain
maximum config 4
error: Requested operation is not valid: domain is not running
current config 4
error: Requested operation is not valid: domain is not running
After:
$virsh vcpucount domain
maximum config 4
current config 4
.. and for transient domains too:
Before:
$ virsh vcpucount transient-domain
error: Requested operation is not valid: cannot change persistent config of a transient domain
maximum live 3
error: Requested operation is not valid: cannot change persistent config of a transient domain
current live 1
After:
$ virsh vcpucount transient-domain
maximum live 3
current live 1
Using of a incorrect value for the --holdtime option was silently
ignored and 0 was used. In case a negative number was used, it
overflowed as the API expects a unsigned int.
Fix the data type and getter function type and report errors on
incorrect values.
With this patch, include public headers in "" form is only allowed
for "internal.h". And only the external tools (examples|tools|python
|include/libvirt) can include the public headers in <> form.
Explicitly state that using incomplete XML definition snippets for hot-management
commands may have unexpected results due to autogenerating values for some of
the fields if they aren't specified explicitly.
Newer pod (hello rawhide) complains if you attempt to mix bullets
and non-bullets in the same list:
virsh.pod around line 3177: Expected text after =item, not a bullet
As our intent was to nest an inner list, we make that explicit to
keep pod happy.
* tools/virsh.pod (ENVIRONMENT): Use correct pod syntax.
This patch improves the error message after disconnecting from the
hypervisor and adds the close callback operations required not to leak
the callback reference.
The function is used to establish connection so it should be in the main
virsh file. This movement also enables further improvements done in next
patches.
Note that the "connect" command has moved from the host section of virsh to the
main section. It is now listed by 'virsh help virsh' instead of 'virsh help
host'.
Before closing the connection we unregister the close callback
to prevent a reference leak.
Further, the messages on virConnectClose != 0 are a bit more specific
now.
Signed-off-by: Viktor Mihajlovski <mihajlov@linux.vnet.ibm.com>
By passing the flags -z relro -z now to the linker, we can force
it to resolve all library symbols at startup, instead of on-demand.
This allows it to then make the global offset table (GOT) read-only,
which makes some security attacks harder.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
PIE (position independent executable) adds security to executables
by composing them entirely of position-independent code (PIC. The
.so libraries already build with -fPIC. This adds -fPIE which is
the equivalent to -fPIC, but for executables. This for allows Exec
Shield to use address space layout randomization to prevent attackers
from knowing where existing executable code is during a security
attack using exploits that rely on knowing the offset of the
executable code in the binary, such as return-to-libc attacks.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
virsh schedinfo was able to set only one parameter at a time (not
counting the deprecated options), but it is useful to set more at
once, so this patch adds the possibility to do stuff like this:
virsh schedinfo <domain> cpu_shares=0 vcpu_period=0 vcpu_quota=0 \
emulator_period=0 emulator_quota=0
Invalid scheduler options are reported as well. These were previously
reported only if the command hadn't updated any values (when
cmdSchedInfoUpdate returned 0).
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=810078
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=919372
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=919375
The virsh(1) man page wasn't saying anything about the 'migrateuri'
parameter other than it can be usually omitted. A patched version of
docs/migrate.html.in is taken in this patch to fix that up in the man
page.
The man page states that with --config the next boot is affected. This
can be understood as if _only_ the next boot was affected. This isn't
true if the machine is running.
This patch adds the full --live, --config, --current infrastructure and
tweaks stuff to correctly support the obsolete --persistent flag.
Note that this patch changes the the behavior of the --config flag to match the
use of this flag in rest of libvirt. This flag was mistakenly renamed from
--persistent that originaly had different semantics.
The domif-getlink command did not terminate successfully when the
interface state was found. As the code used old and too complex approach
to do the job, this patch refactors it and fixes the bug.
The 'virsh vcpupin' and 'virsh emulatorpin' commands use the same
code to parse the cpulist. This patch abstracts the same code as
a helper. Along with various code style fixes, and error improvement
(only error "Physical CPU %d doesn't exist" if the specified CPU
exceed the range, no "cpulist: Invalid format", see the following
for an example of the error prior to this patch).
% virsh vcpupin 4 0 0-8
error: Physical CPU 4 doesn't exist.
error: cpulist: Invalid format.
Since the refactoring in fbe2d49 we call virSecretFree even if
virSecretDefineXML fails, which leads to overwriting the error
message with:
error: Invalid secret: virSecretFree
Bug: https://bugzilla.redhat.com/show_bug.cgi?id=929045
Right now, libvirt-guests gives awkward output. It's possible to
force faster failure by setting /etc/sysconfig/libvirt-guests to use:
ON_SHUTDOWN=shutdown
PARALLEL_SHUTDOWN=0
SHUTDOWN_TIMEOUT=1
ON_BOOT=ignore
at which point, we see:
$ service libvirt-guests restart
Running guests on default URI: a, b, d, c
Shutting down guests on default URI...
Starting shutdown on guest: a
Shutdown of guest a failed to complete in time.Starting shutdown on guest: b
Shutdown of guest b failed to complete in time.Starting shutdown on guest: d
Shutdown of guest d failed to complete in time.Starting shutdown on guest: c
Shutdown of guest c failed to complete in time.libvirt-guests is configured not to start any guests on boot
* tools/libvirt-guests.sh.in (shutdown_guest): Add missing newline.
Reported by Xuesong Zhang.
VIR_CONNECT_LIST_NODE_DEVICES_CAP_FC_HOST to filter the FC HBA,
and VIR_CONNECT_LIST_NODE_DEVICES_CAP_VPORTS to filter the FC HBA
which supports vport.
The docs assumed the command works always for QEMU and other
hypervisors. As this is done using the balloon mechainism live increase
of the maximum memory limit isn't supported. Fix the docs to mention
this limitation.
Don't print the pool option name if it's null.
Before:
virsh # vol-name vol
error: failed to get vol 'vol', specifying --(null) might help
error: Storage volume not found: no storage vol with matching path vol
After:
virsh # vol-name vol
error: failed to get vol 'vol'
error: Storage volume not found: no storage vol with matching path vol
Bug: https://bugzilla.redhat.com/show_bug.cgi?id=924571
This patch adds three macros to the virsh source tree that help to
easily check for mutually exclusive parameters.
VSH_EXCLUSIVE_OPTIONS_EXPR has four arguments, two expressions to check
and two names of the parameters to print in the message.
VSH_EXCLUSIVE_OPTIONS is more specific and check the command structure
for the parameters using vshCommandOptBool.
VSH_EXCLUSIVE_OPTIONS_VAR is meant to check boolean variables with the
same name as the parameters.
Clarify that net-create deals with a transient virtual
network whereas net-define defines a persistent virtual
network definition and will create the network (xml)
definition file.
Clarify that net-destroy works with both transient and
persistent virtual networks.
Signed-off-by: Gene Czarcinski <gene@czarc.net>
After we switched to C99 initialization, I noticed there were many
places where the specification of .flags parameter differed. After
going through many options and deciding whether to unify the
initialization to be '.flags = 0' or '.flags = VSH_OFLAG_NONE', I
realized both can be removed and it makes the code easier to go
through.
According to the man page, the memspec parameter should have the
'--memspec' option mandatory and this is as close as we can get to
that. What this change does is explained below.
man virsh:
snapshot-create-as ... [[--live] [--memspec memspec]]
virsh help snapshot-create-as before this patch:
SYNOPSIS
snapshot-create-as ... [<memspec>] ...
...
OPTIONS
[--memspec] <string> ...
virsh help snapshot-create-as after this patch:
SYNOPSIS
snapshot-create-as ... [--memspec <string>] ...
...
OPTIONS
--memspec <string> ...
Add a new virDomainLxcEnterSecurityLabel() function as a
counterpart to virDomainLxcEnterNamespaces(), which can
change the current calling process to have a new security
context. This call runs client side, not in libvirtd
so we can't use the security driver infrastructure.
When entering a namespace, the process spawned from virsh
will default to running with the security label of virsh.
The actual desired behaviour is to run with the security
label of the container most of the time. So this changes
virsh lxc-enter-namespace command to invoke the
virDomainLxcEnterSecurityLabel method.
The current behaviour is:
LABEL PID TTY TIME CMD
system_u:system_r:svirt_lxc_net_t:s0:c0.c1023 1 pts/0 00:00:00 systemd
system_u:system_r:svirt_lxc_net_t:s0:c0.c1023 3 pts/1 00:00:00 sh
system_u:system_r:svirt_lxc_net_t:s0:c0.c1023 24 ? 00:00:00 systemd-journal
system_u:system_r:svirt_lxc_net_t:s0:c0.c1023 29 ? 00:00:00 dhclient
staff_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 47 ? 00:00:00 ps
Note the ps command is running as unconfined_t, After this patch,
The new behaviour is this:
virsh -c lxc:/// lxc-enter-namespace dan -- /bin/ps -eZ
LABEL PID TTY TIME CMD
system_u:system_r:svirt_lxc_net_t:s0:c0.c1023 1 pts/0 00:00:00 systemd
system_u:system_r:svirt_lxc_net_t:s0:c0.c1023 3 pts/1 00:00:00 sh
system_u:system_r:svirt_lxc_net_t:s0:c0.c1023 24 ? 00:00:00 systemd-journal
system_u:system_r:svirt_lxc_net_t:s0:c0.c1023 32 ? 00:00:00 dhclient
system_u:system_r:svirt_lxc_net_t:s0:c0.c1023 38 ? 00:00:00 ps
The '--noseclabel' flag can be used to skip security labelling.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Properly check the return value of vshCommandOptStringReq for xmlfile:
* error out on incorrect input (--xmlfile '')
* use default XML <domainsnapshot/> with no --xmlfile specified
(Broken by commit b2e8585)
Bug: https://bugzilla.redhat.com/show_bug.cgi?id=919826
RHEL4 vintage libxml2 header files are missing xmlSaveToBuffer
despite the symbol existing in the binary
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Only nodedev-destroy and nodedev-dumpxml can benifit from the
new API, other commands like nodedev-detach only works for
PCI devices, WWN makes no sense for them.
This patch switches string option retrieval to vshCommandOptStringReq
and refactors some error paths to avoid an unlikely memory leak of a
secret object in cmdSecretSetValue.
