During a savevm operation, libvirt will now use fd migration if qemu
supports it. When the AppArmor driver is enabled, AppArmorSetFDLabel()
is used but since this function simply returns '0', the dynamic AppArmor
profile is not updated and AppArmor blocks access to the save file. This
patch implements AppArmorSetFDLabel() to get the pathname of the file by
resolving the fd symlink in /proc, and then gives that pathname to
reload_profile(), which fixes 'virsh save' when AppArmor is enabled.
Reference: https://launchpad.net/bugs/795800
Most of the safezero() implementations return -1 on error,
setting errno. The safezero() impl using posix_fallocate()
though returned a positive errno value on error (due to
the unusual API contract of posix_fallocate() compared to
most syscall APIs).
* src/util/util.c: Ensure safezero() returns -1 and sets
errno on error.
* src/storage/storage_backend.c: Change safezero != 0 to
< 0 for detecting errors
If the 'mac_filter' configuration parameter is enabled, and there
is a failure to enable filtering, no error is reported back to
the caller. Also fix some bogus whitespace indentation for
hugetlbfs_mount
* src/qemu/qemu_conf.c: Add missing error reporting
Even though rpc uses 'unsigned int' for the _len parameter that
passes the length of item<length>, the public libvirt APIs all
use 'int' and filter out lengths < 0, except for virDomainSendKey.
* include/libvirt/libvirt.h.in (virDomainSendKey): All other APIs
use int for array length.
* src/libvirt.c (virDomainSendKey): Adjust.
* src/driver.h (virDrvDomainSendKey): Likewise.
* daemon/remote_generator.pl: Likewise.
Detected by autobuild.sh when cross-building for mingw.
Introduced in commits ce76e85 and af35cec.
* src/nodeinfo.c (nodeGetCPUStats, nodeGetMemoryStats): Mark
parameters as potentially unused.
The position of the struct parameter in the function signature
differs. Instead of hardcoding the handling for this add an annotation
to the .x file to define the position.
This reduces things from O(n^2) to O(n).
* tools/virsh.c (vshCommandOptArgv): Change signature.
(cmdEcho): Update caller.
Based on a patch by Lai Jiangshan.
The LXC driver networking uses veth device pairs. These can
be easily hooked into the network filtering code.
* src/lxc/lxc_driver.c: Add calls to setup/teardown nwfilter
The algorithm for autoassigning vethXXX devices, was always
skipping over the starting dev index when finding a free
name for the guest device. This should only be done if the host
device was autoallocated.
* src/lxc/veth.c: Don't skip over veth indexes
Prefer bootindex=N option for -device over the old way -boot ORDER
possibly accompanied with boot=on option for -drive. This gives us full
control over which device will actually be used for booting guest OS.
Moreover, if qemu doesn't support boot=on, this is the only way to boot
of certain disks in some configurations (such as virtio disks when used
together IDE disks) without transforming domain XML to use per device
boot elements.
When an operation started by virDomainBlockPullAll completes (either with
success or with failure), raise an event to indicate the final status. This
allows an API user to avoid polling on virDomainBlockPullInfo if they would
prefer to use the event mechanism.
* daemon/remote.c: Dispatch events to client
* include/libvirt/libvirt.h.in: Define event ID and callback signature
* src/conf/domain_event.c, src/conf/domain_event.h,
src/libvirt_private.syms: Extend API to handle the new event
* src/qemu/qemu_driver.c: Connect to the QEMU monitor event
for block_stream completion and emit a libvirt block pull event
* src/remote/remote_driver.c: Receive and dispatch events to application
* src/remote/remote_protocol.x: Wire protocol definition for the event
* src/qemu/qemu_monitor.c, src/qemu/qemu_monitor.h,
src/qemu/qemu_monitor_json.c: Watch for BLOCK_STREAM_COMPLETED event
from QEMU monitor
Signed-off-by: Adam Litke <agl@us.ibm.com>
virDomainBlockPullAll and virDomainBlockPullAbort are handled automatically.
virDomainBlockPull and virDomainBlockPullInfo require manual overrides since
they return a custom type.
* python/generator.py: reenable bindings for this entry point
* python/libvirt-override-api.xml python/libvirt-override.c:
manual overrides
Signed-off-by: Adam Litke <agl@us.ibm.com>
Acked-by: Daniel P. Berrange <berrange@redhat.com>
Define two new virsh commands:
* blockpull: Perform block pull operations (incremental plus start
and stop continuous streams)
* blockpullinfo: Retrieve progress info for continuous block pull
Share print_job_progress() with the migration code.
* tools/virsh.c: implement the new commands
Signed-off-by: Adam Litke <agl@us.ibm.com>
The virDomainBlockPull* family of commands are enabled by the
'block_stream' and 'info block_stream' qemu monitor commands.
* src/qemu/qemu_driver.c src/qemu/qemu_monitor_text.[ch]: implement disk
streaming by using the stream and info stream text monitor commands
* src/qemu/qemu_monitor_json.[ch]: implement commands using the qmp monitor
Signed-off-by: Adam Litke <agl@us.ibm.com>
Acked-by: Daniel P. Berrange <berrange@redhat.com>
The generator can handle DomainBlockPullAll and DomainBlockPullAbort.
DomainBlockPull and DomainBlockPullInfo must be written by hand.
* src/remote/remote_protocol.x: provide defines for the new entry points
* src/remote/remote_driver.c daemon/remote.c: implement the client and
server side
* src/remote_protocol-structs: structure definitions for protocol verification
Signed-off-by: Adam Litke <agl@us.ibm.com>
Set up the types for the block pull functions and insert them into the
virDriver structure definition. Symbols are exported in this patch to prevent
documentation compile failures.
* include/libvirt/libvirt.h.in: new API
* src/driver.h: add the new entry to the driver structure
* python/generator.py: fix compiler errors, the actual python bindings are
implemented later
* src/libvirt_public.syms: export symbols
Signed-off-by: Adam Litke <agl@us.ibm.com>
From a security pov copy and paste between the guest and the client is not
always desirable. So we need to be able to enable/disable this. The best place
to do this from an administration pov is on the hypervisor, so the qemu cmdline
is getting a spice disable-copy-paste option, see bug 693645. Example qemu
invocation:
qemu -spice port=5932,disable-ticketing,disable-copy-paste
https://bugzilla.redhat.com/show_bug.cgi?id=693661
Drivers load running persistent and transient domain configs before
inactive persistent domain configs, however only the latter would set a
domain's autostart flag. This mismatch between the loaded and on-disk
state could later cause problems with "virsh autostart":
# virsh autostart example
error: Failed to mark domain example as autostarted
error: Failed to create symlink '/etc/libvirt/qemu/autostart/example.xml to '/etc/libvirt/qemu/example.xml': File exists
This patch ensures the autostart flag is set correctly even when the
domain is already defined.
Fixes:
https://bugzilla.redhat.com/show_bug.cgi?id=632100https://bugzilla.redhat.com/show_bug.cgi?id=675319
Signed-off-by: Michael Chapman <mike@very.puzzling.org>
Add public virDomainSendKey() and enum libvirt_keycode_set
for the @codeset.
Python version of virDomainSendKey() has not been implemented yet,
it will be done soon.
Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com>
A VSH_OFLAG_REQ_OPT option means --optionname is required when used.
It will kill any ambiguity, even a !VSH_OFLAG_REQ option listed before
a VSH_OFLAG_REQ option, if the !VSH_OFLAG_REQ option is a
VSH_OFLAG_REQ_OPT option.
It will help us use optional argument with VSH_OT_ARGV argument.
Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com>
A name will improve the usege, example
# virsh help echo
NAME
echo - echo arguments
SYNOPSIS
echo [--shell] [--xml] [<string>]...
DESCRIPTION
Echo back arguments, possibly with quoting.
OPTIONS
--shell escape for shell use
--xml escape for XML use
<string> arguments to echo
"[<string>]..." is added to SYNOPSIS.
"<string> arguments to echo" is added to OPTIONS.
Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com>
