Commit Graph

30993 Commits

Author SHA1 Message Date
Peter Krempa
c7a85b5b77 qemu: command: Always assume support for '-msg timestamp=on'
All supported QEMU versions have this option so there's no need for us
to base it on the capability.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2021-08-18 10:00:22 +02:00
Peter Krempa
5d87897591 qemu: capabilities: Retire QEMU_CAPS_NAME*
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2021-08-18 09:59:44 +02:00
Peter Krempa
d5a6145900 qemu: command: Always assume support for '-name guest=' and '-name debug-threads=on'
All QEMU versions we support have these and it's very unlikely that they
will be removed. Remove the capability checks.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2021-08-18 09:59:31 +02:00
Peter Krempa
556bfdb85d qemu: capabilities: Add alternative detection of QEMU_CAPS_NUMA
'set-numa-node' is the command which can set the equivalent parameters
to '-numa' in preconfig mode, so we can use it as witness to see that
-numa is supported.

To ensure that the old detection method is removed once we'll be bumping
qemu support add a comment with the appropriate version check.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2021-08-18 09:58:11 +02:00
Peter Krempa
88f7511923 qemuMonitorSetBlockIoThrottle: Remove booleans controlling used fields
All supported QEMU versions have all the fields so we can remove the
booleans controlling which fields are used on the monitor.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2021-08-18 09:57:34 +02:00
Peter Krempa
059103869e qemuMonitorJSONSetBlockIoThrottle: Switch to standard error reporting
Use qemuMonitorJSONCheckError instead of handcrafted error reporting.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2021-08-18 09:57:22 +02:00
Peter Krempa
2d57075cb6 qemuMonitorJSONSetBlockIoThrottle: Refactor cleanup
Switch to automatic memory freeing and remove the cleanup section.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2021-08-18 09:57:10 +02:00
Peter Krempa
9c3fdcdfec qemu: capabilties: Retire QEMU_CAPS_DRIVE_IOTUNE_* caps
They are no longer used as we now assume that all tuning caps are
present and in case some will be removed we'll need to use different
probing methods.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2021-08-18 09:56:33 +02:00
Peter Krempa
96ecc3e208 qemu: Always assume that qemu supports drive throttling
All currently supported qemu versions support all throttling
capabilities. It is unlikely that any of the fields will be removed in
the future and if it will we will need to do specific probing which is
possible via the 'throttle' object which is the replacement for the
legacy way to configure throttling.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2021-08-18 09:56:17 +02:00
Peter Krempa
fb5a246424 qemu: capabilities: Probe QEMU_CAPS_SMP_DIES from the QMP schema
The configurability of the number of dies in a CPU can be inferred from
the presence of the 'die-id' field in 'query-hotpluggable-cpus'.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2021-08-18 09:56:07 +02:00
Peter Krempa
067f44fd0b qemu: capabilities: Probe 'discard' and 'detect-zeroes' from 'blockdev-add'
Probing QEMU_CAPS_DRIVE_DISCARD and QEMU_CAPS_DRIVE_DETECT_ZEROES can be
replaced by looking into the QMP schema rather than looking at -drive
which isn't in use any more.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2021-08-18 09:55:56 +02:00
Peter Krempa
2a47d74758 qemu: capabilities: Rename QEMU_CAPS_CHARDEV_FD_PASS to QEMU_CAPS_CHARDEV_FD_PASS_COMMANDLINE
Make it more obvious that we care about passing FDs on the commandline
before startup of qemu, which is used to avoid startup monitor polling.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2021-08-18 09:54:46 +02:00
Peter Krempa
f64fc98506 qemu: capabilities: Probe 'reconnect', 'logfile' and 'append' from 'chardev-add'
QEMU_CAPS_CHARDEV_RECONNECT, QEMU_CAPS_CHARDEV_LOGFILE and
QEMU_CAPS_CHARDEV_FILE_APPEND can be probed from the appropriate fields
in 'chardev-add' probed via the QMP schema instead of the command line
parameters.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2021-08-18 09:37:09 +02:00
Peter Krempa
ef5f998a96 qemu: capabilities: Note that basing probing on 'query-command-line-options' should be avoided
Add a comment that will attempt to discourage adding new capabilities
based on 'query-command-line-options'.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2021-08-18 09:37:09 +02:00
Peter Krempa
42e7f6a35b scripts: group-qemu-caps: Add capability name as comment to capability string
Add a cross reference of the enum value name with the string
representation. This allows a quick cross-reference of the values
without having to open the header and implementation files separately.

To achieve this the checker code at first obtains a list of the
flags and cross-references them when checking the grouping in
syntax-check, thus we are guaranteed to stay in sync.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2021-08-18 09:37:09 +02:00
Peter Krempa
0a8e44bc9f virQEMUCapsQMPSchemaQueries: Group by queried object name
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2021-08-18 09:37:09 +02:00
Peter Krempa
3cb391b39c virQEMUCapsCommandLine: Group by commandline argument name alphabetically
Further commits will be refactoring and minimizing capabilities being
parsed from 'query-command-line-options'. Group the struct driving the
detection by argument name so it's easier to spot options belonging
together.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2021-08-18 09:37:08 +02:00
Ján Tomko
5590fbf8d6 Remove redundant labels
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
2021-08-17 18:27:13 +02:00
Ján Tomko
9302e249db Use g_autofree in affected functions
Add g_autofree to functions changed in previous commits doing
g_auto cleanup for libxml2-related variables, where it could
lead to removal of a label.

Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
2021-08-17 18:27:13 +02:00
Ján Tomko
2c426d2e30 Use g_auto for xmlFreeDoc everywhere
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
2021-08-17 18:27:13 +02:00
Ján Tomko
5dae71ee8c Use g_auto for xmlXPathContext everywhere
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
2021-08-17 18:27:13 +02:00
Ján Tomko
4a8ce37bf1 conf: refactor virNetworkLoadState
Use g_auto where possible, reducing variable scope where applicable.

Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
2021-08-17 18:27:13 +02:00
Ján Tomko
1550892e85 conf: virCPUDefListParse: reduce scope of variables
Move 'ctxt' and 'doc' inside the loop and mark them with g_auto.

Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
2021-08-17 18:27:13 +02:00
Pavel Hrdina
c6c3dd5971 vircgroup: fix build on non-linux systems
virCgroupGetInode needs to be in '#ifdef __linux__'.

Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2021-08-17 15:29:38 +02:00
Pavel Hrdina
6cbb1865d8 qemu: implement support for Fibre Channel VMID
Based on kernel commit messages the interface is

    /sys/class/fc/fc_udev_device/appid_store

where we need to write the following string "$INODE:$APPID".

$INODE is the VM root cgroup inode in hexadecimal and $APPID is user
provided string that will be attached to each FC frame for the VM
within the cgroup identified by inode and has limit 128 bytes.

Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
2021-08-17 13:51:40 +02:00
Pavel Hrdina
38b5f4faab conf: introduce support for Fibre Channel VMID
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
2021-08-17 13:50:38 +02:00
Pavel Hrdina
9ea9f7dab2 conf: refactor virDomainResourceDefFormat
Prepare the function for additional sub-elements where all of the
sub-elements are optional.

Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
2021-08-17 12:35:45 +02:00
Pavel Hrdina
77b53057c7 conf: refactor virDomainResourceDefParse
There is no need to error out for empty <partition></partition> element
as we can just simply ignore it. This allows to simplify the function
and prepare it for new sub-elements of <resource>.

It makes the <partition> element optional so we need to reflect the
change in schema as well.

Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
2021-08-17 12:35:45 +02:00
Pavel Hrdina
10c2c0b249 vircgroup: introduce virCgroupGetInode function
For new feature Fibre Channel VMID we will need to get inode of the
VM root cgroup as it is used in the new kernel API together with VMID.

Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
2021-08-17 12:35:45 +02:00
Zhenyu Ye
f14d6ab537 security: fix use-after-free in virSecuritySELinuxReserveLabel
commit 2e668a61d5ae4("Fix error handling when adding MCS labels") uses
the 'pctx' in virReportError after it has been freed. Fix it.

Fixes: 2e668a61d5
Signed-off-by: Zhenyu Ye <yezhenyu2@huawei.com>
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
2021-08-17 12:07:36 +02:00
Michal Privoznik
32f7db0989 vmx: Support super wide SCSI bus
Since its 6.7 release, vSphere allows up to 64 units on a SCSI
bus [1]. The release version translates to virtualHW_version 13
and thus if we are dealing with sufficiently new version we can
enable the feature.

1: https://configmax.vmware.com/guest?vmwareproduct=vSphere&release=vSphere%206.7&categories=1-0

Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1738392
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2021-08-16 14:22:38 +02:00
Michal Privoznik
5c254bb541 conf: Store SCSI bus length in virDomainDef
Libvirt assumes that a SCSI bus can fit up to 8 devices
(including controller itself), except for so called wide bus
which can accommodate up to 16 devices (again, including
controller). This plays important role when computing 'drive'
address in virDomainDiskDefAssignAddress(). So far, the only
driver that enables wide SCSI bus is VMX. But with newer
releases, ESX is capable of "super wide" bus (64 devices).

We can blindly bump the limit in our code because then we would
compute address that's invalid for older ESX versions that we
still want to support.

Unfortunately, I haven't found a better place where to store this
than virDomainDef.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2021-08-16 14:22:38 +02:00
Michal Privoznik
48344c640f vmx: Drop needless check in virVMXParseDisk()
After previous patch it can no longer happen that @def will be
NULL and *def won't be.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2021-08-16 14:22:38 +02:00
Michal Privoznik
d628c5ded1 vmx: Rework disk def allocation
The way we parse VMX configuration is rather unfortunate,
especially when it comes to disks. We allocate an array that can
handle all possible disks but leave the array counter (ndisks) at
zero and increase it only after successful parsing. But, we never
size the array down to release unneeded chunks of memory.

We can do better: we can use VIR_APPEND_ELEMENT() to allocate
array as needed.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
2021-08-16 14:22:38 +02:00
Michal Privoznik
5e16038284 vmx: Fill virtualHW.version to ESX version mapping
At the beginning of vmx.c we have a comment that maps
virtualHW.version field onto ESX version. However, it wasn't
updated in a while. Fill it in using the following kbase article:

  https://kb.vmware.com/s/article/1003746

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2021-08-16 14:22:38 +02:00
Michal Privoznik
4705edf6cc qemu: Open chardev logfile on behalf of QEMU
If the QEMU driver is configured to use the old "file" stdio
handler (meaning virtlogd is out of the picture) and a chardev
has a log file configured we rely on QEMU being able to create
the file itself. This may not be always possible (e.g. if the
logfile is set to a directory that QEMU process can't reach).
In such case we should create the file and just pass its FD to
QEMU.

We could do that unconditionally and just either pass FD from
virtlogd or the one we opened, because we bumped QEMU version
and are now requiring new enough QEMU. However, I'm keeping the
old style where logfile is appended on the cmd line for the tests
sake.

Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1989457
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
Tested-by: Ján Tomko <jtomko@redhat.com>
2021-08-16 09:25:13 +02:00
Michal Privoznik
b5958b2863 qemuDomainOpenFile: Take @cfg instead of driver
Again, we don't need full driver, just its config.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
Tested-by: Ján Tomko <jtomko@redhat.com>
2021-08-16 09:24:38 +02:00
Michal Privoznik
e0dcdaefe2 qemuDomainOpenFile: Take virDomainDef instead of virDomainObj
The function doesn't really need domain object, but domain
definition from which it takes seclabels.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
Tested-by: Ján Tomko <jtomko@redhat.com>
2021-08-16 09:24:05 +02:00
Michal Privoznik
34ce7e7e96 virDomainDefGetSecurityLabelDef: Fix const correctness
The function doesn't write to domain definition really so make
@def argument as const. This allows us to call it from functions
where the domain definition is already const.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
Tested-by: Ján Tomko <jtomko@redhat.com>
2021-08-16 09:21:10 +02:00
Olaf Hering
42158b8936 libxl: remove conditionals from discard configuration
LIBXL_HAVE_LIBXL_DEVICE_DISK_DISCARD_ENABLE exists since Xen 4.5.0

Signed-off-by: Olaf Hering <olaf@aepfle.de>
Reviewed-by: Jim Fehlig <jfehlig@suse.com>
2021-08-13 08:44:01 -06:00
Ján Tomko
69e810945e util: xml: clean up unnecessary ret variables
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
2021-08-12 15:47:36 +02:00
Ján Tomko
441d2f4e23 util: xml: use g_auto for xmlXPathObject
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
2021-08-12 15:47:36 +02:00
Ján Tomko
8f6657aea9 util: define cleanup func for xmlXPathObject
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
2021-08-12 15:47:36 +02:00
Kristina Hanicova
68d386913f conf: replace validation with variables passed to virXMLParse()
virXMLParse() now allows validating xml against schema directly,
eliminating the need to do it individually in each function.

Signed-off-by: Kristina Hanicova <khanicov@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
2021-08-12 13:12:29 +02:00
Kristina Hanicova
6106327b23 domain_conf: Remove redundant variable
xmlDocPtr is no longer needed, because validation against schema
was moved to another function.

Signed-off-by: Kristina Hanicova <khanicov@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
2021-08-12 13:12:29 +02:00
Kristina Hanicova
e6c730c865 domain_conf: replace validation with variables passed to virXMLParse()
virXMLParse() now allows to validate xml against schema directly,
eliminating the need to do it individually.

Signed-off-by: Kristina Hanicova <khanicov@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
2021-08-12 13:12:29 +02:00
Kristina Hanicova
323a1318a3 util: add xml validation against schema in virXMLParseHelper()
We need this in order to validate XML against schema at one
place, rather than have the same code for validation in different
functions.
I will add '--validate' option to more virsh commands soon and
this makes it easier as virXMLParse() is called in every one I
plan to change.

Signed-off-by: Kristina Hanicova <khanicov@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
2021-08-12 13:12:29 +02:00
Kristina Hanicova
f43c27960e src: add 'schema' and 'validate' variable to virXMLParseHelper()
Signed-off-by: Kristina Hanicova <khanicov@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
2021-08-12 13:12:29 +02:00
Kristina Hanicova
878cbd0f6a qemu: save status xml after generating taint message
We didn't always save status xml after generating new taint message
which resulted in it being deleted in case of a libvirtd restart.
Some taint messages were preserved thanks to saving status xml
separately at the end of the calling functions. With this, every taint
message is saved, regardless of the calling functions.

Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1965589

Signed-off-by: Kristina Hanicova <khanicov@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2021-08-12 10:34:35 +02:00
Andrea Bolognani
2c0f47e75c meson: Always use the / operator to join paths
This is the preferred way to do it, but there were a few
instances in which some of the path components had embedded
slashes instead.

Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
2021-08-11 09:16:36 +02:00
Luke Yue
5de700c64f domain_conf: Fix memory leak when free'ing virDomainObj
Free dom->deprecations when free'ing virDomainObj

Signed-off-by: Luke Yue <lukedyue@gmail.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
2021-08-10 15:55:55 +02:00
Peter Krempa
b160cb7201 util: virstring: Remove unused virStringListFreeCount
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2021-08-09 10:09:01 +02:00
Peter Krempa
4346aec255 lxcContainerSetReadOnly: Refactor cleanup handling
Turn 'mounts' into a proper GStrv after sorting so that automatic
cleanup can be used and shuffle around the cleanup steps so that jumps
can be avoided in favor of direct return of error code.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2021-08-09 10:09:01 +02:00
Peter Krempa
65b918432e qemuDomainUnshareNamespace: Use automatic memory clearing for string lists
'devMountsPath' and 'devMountsSavePath' are NULL terminated.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2021-08-09 10:09:01 +02:00
Peter Krempa
1b3c391a55 qemuNamespaceMknodPaths: Remove 'ndevMountsPath'
'devMountsPath' can be converted to an auto-cleared stringlist and thus
asking for the number of entries is not necessary.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2021-08-09 10:09:01 +02:00
Peter Krempa
b28cf6a44e qemuNamespacePrepareOneItem: Don't pass count of elements
The only caller is passing a NULL terminated string list as
'devMountsPath' thus we don't need to get the count of elements.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2021-08-09 10:09:01 +02:00
Peter Krempa
0fcf40dc8b qemuNamespacePrepareOneItem: Restructure code to avoid temporary variables
The value of 'next' is copied into 'item.file' so we can move the update
to the 'next' pointer earlier and move the VIR_APPEND_ELEMENT call to
where we figure out that we need to append the value.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2021-08-09 10:09:01 +02:00
Peter Krempa
1f2ceda397 network: bridge: Store dnsmasq passthrough options in NULL-terminated string list
We always process the full list so there's no value in storing the count
separately.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2021-08-09 10:09:01 +02:00
Peter Krempa
93a42f8507 qemu: domain: Store passthrough arguments in NULL-terminated string list
We always process the full list so there's no value in storing the count
separately.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2021-08-09 10:09:00 +02:00
Peter Krempa
d1aa253730 qemu: domain: Store capability overrides in NULL-terminated string list
We always process the full list so there's no value in storing the count
separately.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2021-08-09 10:09:00 +02:00
Peter Krempa
b7b8ea965b qemu: domain: Store passthrough environment variables in a struct
Previously they were stored in two separate arrays. This way it's
obvious when referencing the same one.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2021-08-09 10:09:00 +02:00
Peter Krempa
8c85d51926 qemu: firmware: Store machine types as a NULL-terminated string list
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2021-08-09 10:09:00 +02:00
Peter Krempa
640e987b61 remote: dispatch: Don't use virStringListFreeCount for NULL terminated lists
Both virDomainAuthorizedSSHKeysGet and virDomainGetMessages return a
NULL-terminated string-list, so we can use g_auto(GStrv) to clear the
used memory on failures.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2021-08-09 10:09:00 +02:00
Peter Krempa
d40e9d1df8 virNetDevGetVirtualFunctions: Directly return virPCIVirtualFunctionList
Remove the conversion from virPCIVirtualFunctionList which encapsulates
the list of virtual functions to two disjunct arrays.

This greatly simplifies the fetching of the parameters as well as
cleanup in the caller.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2021-08-09 10:09:00 +02:00
Peter Krempa
795e9e05c3 virPCIGetVirtualFunctions: Fetch also network interface name if needed
'virNetDevGetVirtualFunctions' calls 'virPCIGetVirtualFunctions' and
then re-iterates the returned list to fetch the interface names for the
returned virtual functions.

If we move the fetching of the interface name into
virPCIGetVirtualFunctions we can simplify the code and remove a bunch of
impossible error states.

To accomplish this the function is renamed to
'virPCIGetVirtualFunctionsFull' while keeping a wrapper with original
name and if the physical port ID is passed the interface name is fetched
too without the need to re-convert the address into a sysfs link.

For now 'virNetDevGetVirtualFunctions' still converts the returned data
into two lists.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2021-08-09 10:09:00 +02:00
Peter Krempa
7ef618f30a virPCIGetNetName: Make 'physPortID' argument const
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2021-08-09 10:09:00 +02:00
Peter Krempa
9766d0bac7 virPCIGetVirtualFunctionIndex: Refactor cleanup
The 'ret' variable and 'out' label can be removed.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2021-08-09 10:09:00 +02:00
Peter Krempa
c97518d9b8 virPCIGetVirtualFunctions: Simplify cleanup of returned data
Introduce a struct for holding the list of VFs returned by
virPCIGetVirtualFunctions so that we can employ automatic memory
clearing and also allow querying more information at once.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2021-08-09 10:09:00 +02:00
Peter Krempa
00f804c1cf virNetDevGetVirtualFunctions: Remove 'max_vfs' argument
The only caller doesn't use it.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2021-08-09 10:09:00 +02:00
Jonathon Jongsma
fcae7a44c3 nodedev: look up mdevs by UUID and parent
Since UUID is not guaranteed to be unique by mdevctl, we may have more
than one nodedev with the same UUID. Therefore, we need to disambiguate
when looking up mdevs by specifying the UUID and parent address, which
mdevctl guarantees to be a unique combination.

Signed-off-by: Jonathon Jongsma <jjongsma@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
2021-08-06 15:02:41 -05:00
Jonathon Jongsma
3bd8181bc5 nodedev: Handle inactive mdevs with the same UUID
Unfortunately, mdevctl supports defining more than one mdev with the
same UUID as long as they have different parent devices. (Only one of
these devices can be active at any given time).

This means that we can't use the UUID alone as a way to uniquely
identify mdev node devices. Append the parent address to ensure
uniqueness. For example:

    Before: mdev_88a6b868_46bd_4015_8e5b_26107f82da38
    After:  mdev_88a6b868_46bd_4015_8e5b_26107f82da38_0000_00_02_0

Related: https://bugzilla.redhat.com/show_bug.cgi?id=1979440

Signed-off-by: Jonathon Jongsma <jjongsma@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
2021-08-06 15:02:38 -05:00
Jonathon Jongsma
08d29eb3b1 nodedev: add PostParse callback for nodedev parsing
This can be used similarly to other postparse callbacks in libvirt --
filling in additional information that can be determined by using the
information provided in the XML. In this case, we determine the address
of the parent device and cache it in the mdev caps so that we can use it
for generating a unique name and interacting with mdevctl.

Signed-off-by: Jonathon Jongsma <jjongsma@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
2021-08-06 15:02:36 -05:00
Jonathon Jongsma
d5ae634ba2 nodedev: Add parser validation for node devices
At the moment, this is only for mediated devices. When a new mediated
device is created or defined, the xml is expected specify the nodedev
name of an existing device as its parent. We were not previously
validating this and were simply accepting any string here.

Signed-off-by: Jonathon Jongsma <jjongsma@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
2021-08-06 15:02:32 -05:00
Jonathon Jongsma
e44408dd9c nodedev: cache parent address in mdev caps
mdevctl can report multiple defined devices with the same UUID
but different parents, including parents that don't actually exist on
the host machine. Libvirt sets the parent to the 'computer' device for
all of the mdevs that have nonexistent parents. Because of this, it's
possible that there are multiple devices with the same UUID and the same
'computer' device as their parent, so the combination of uuid and parent
nodedev name is not guaranteed to be a unique name.

We need to ensure that each nodedev has a unique name. If we can't use
the UUID as a unique nodedev name, and we can't use the combination of
UUID and nodedev parent name, we need to find another solution. By
caching and using the parent name reported by mdevctl in combination
with the UUID, we can achieve a unique name. mdevctl guarantees that its
uuid/parent combination is unique.

This value will be used to set the mdev nodedev name in a following commit.

Signed-off-by: Jonathon Jongsma <jjongsma@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
2021-08-06 15:02:29 -05:00
Jonathon Jongsma
a9c1febcf4 nodedev: fix xml output for mdev parents in test suite
Commit 51fbbfdce8 attempted to get the proper nodedev name for the
parent of an defined mdev by traversing the filesystem and looking for a
device that had the appropriate sysfs path.  This works, but it would be
cleaner to to avoid mucking around in the filesystem and instead just
just examine the list of devices we have in memory.

We already had a function nodeDeviceFindAddressByName() which constructs
an address for parent device in a format that can be used with mdevctl.
So if we refactor this function into a a function that simply formats an
address for an arbitrary virNodeDeviceObj*, then we can use this
function as a predicate for our new virNodeDeviceObjListFind() function
from the previous commit. This will search our list of devices for one
whose address matches the address we get from mdevctl.

One nice benefit of this approach is that our test cases will now
display xml output with the proper parent name for mdevs (assuming that
we've added the appropriate mock parent devices to the test driver).
Previously they just displayed 'computer' for the parent because the
alternative would have required specially constructing a mock filesystem
environment with a sysfs that mapped to the appropriate parent.

Signed-off-by: Jonathon Jongsma <jjongsma@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
2021-08-06 15:02:23 -05:00
Jonathon Jongsma
fdfe4b2837 nodedev: add internal virNodeDeviceObjListFind()
This is a generic function that you can provide your own predicate
function to search for a particular device. It will be used in an
upcoming commit.

Signed-off-by: Jonathon Jongsma <jjongsma@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
2021-08-06 15:01:52 -05:00
Daniel P. Berrangé
1280a631ef src: stop checking virIdentityNew return value
This method will always succeed.

Reviewed-by: Peter Krempa <pkrempa@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
2021-08-06 12:11:58 +01:00
Daniel P. Berrangé
5df2c49263 util: directly query KVM for TSC scaling support
We currently query the host MSRs to determine if TSC scaling is
supported. This works OK when running privileged and can open
the /dev/cpu/0/msr. When unprivileged we fallback to querying
MSRs from /dev/kvm. This is incorrect because /dev/kvm only
reports accurate info for MSRs that are valid to use from inside
a guest.  The TSC scaling support MSR is not, thus we always end
up reporting lack of TSC scaling when unprivileged.

The solution to this is easy, because KVM can directly report
whether TSC scaling is available, which matches what QEMU will
do at startup.

Closes: https://gitlab.com/libvirt/libvirt/-/issues/188
Reported-by: Roman Mohr <rmohr@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
2021-08-06 12:00:53 +01:00
Daniel P. Berrangé
a29af66ffe Revert "remote: remove probing logic from virtproxyd dispatcher"
This reverts commit 05bd8db60b.

It is true that the remote driver client now contains logic for probing
the driver to connect to when using modular daemons. This logic, however,
only runs when the remote driver is NOT running inside a daemon since we
don't want it activated inside libvirtd. Since the same remote driver
build is used in all daemons, we can't rely on it in virtproxyd either.
Thus we need to keep the virtproxyd probing logic

Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
2021-08-06 12:00:53 +01:00
Peter Krempa
51733511d1 virStorageBackendLogicalParseVolExtents: Remove 'cleanup' and 'ret'
The function was inconsistently using 'return -1' and 'goto cleanup;'
unify it by removing the cleanup label and 'ret' variable.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
2021-08-06 08:53:26 +02:00
Peter Krempa
e03e54c9a2 virStorageBackendLogicalParseVolExtents: Move 'extents' inside the loop
It's used only inside the loop filling the extents, move it there and
restructure the code so that 'extent.path' doesn't have to be freed.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
2021-08-06 08:53:26 +02:00
Peter Krempa
bbd89d7894 virStorageBackendLogicalParseVolExtents: Declare one variable per line
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
2021-08-06 08:53:26 +02:00
Peter Krempa
bd83527521 lxcNetworkParseDataIPs: Automatically free string list
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
2021-08-06 08:53:26 +02:00
Peter Krempa
30b6be3f8c virNetServerGetClients: Remove pointless cleanup
'list' will always be NULL when reaching 'virObjectListFreeCount' thus
we can remove the call as well as the 'ret' variable which was only ever
equal to 'nclients' at the point when we returned the value.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
2021-08-06 08:53:26 +02:00
Peter Krempa
a257668ede qemuProcessSetupHotpluggableVcpus: Use automatic memory freeing
'bootHotplug' can be auto-freed when terminating the function and moving
the declaration of 'vcpuprops' to the loop which uses it along with
automatic freeing allows us to simplify cleanup in certain cases.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
2021-08-06 08:53:26 +02:00
Peter Krempa
0b6888451f virNWFilterIncludeDefToRuleInst: Refactor cleanup
Use automatic memory freeing for 'tmpvars' and move the allocation of
tmpvars earlier so that we are guaranteed that 'obj' will always be
appended to 'inst->filters' and thus don't need cleanup for it.

By moving the reset of 'inst' to the block when virNWFilterDefToInst
fails we can get rid of the rest of the cleanup section and remove the
'ret' variable.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
2021-08-06 08:53:26 +02:00
Peter Krempa
abd045030e virNWFilterRuleDefToRuleInst: Restructure code to avoid cleanup
Construct the 'ruleinst->vars' hash table separately in a temporary
variable so that 'ruleinst' can be allocated on success. This allows us
to get rid of the cleanup section.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
2021-08-06 08:53:26 +02:00
Peter Krempa
8d4468d007 virObjectEventCallbackListAddID: Remove pointless cleanup of 'cb'
'cb' is always NULL when 'virObjectEventCallbackListAddID' is called.
Remove the call.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
2021-08-06 08:53:26 +02:00
Peter Krempa
aa76e5d0a4 qemuDomainAttachDeviceConfig: Remove pointless assignment
'dev->data.rng' is NULLed by VIR_APPEND_ELEMENT

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
2021-08-06 08:53:26 +02:00
Peter Krempa
4e7576a741 virSecuritySELinuxContextListAppend: Remove unreachable cleanup
'item' is always NULLed-out by VIR_APPEND_ELEMENT and 'ret' variable is
always 0 when used so both can be removed.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
2021-08-06 08:53:26 +02:00
Peter Krempa
966ba852b7 qemuDomainUSBAddressAddHubs: Refactor cleanup
'hub' doesn't need to be freed any more because it's always consumed and
NULLed-out by VIR_APPEND element. This also makes the 'ret' variable
obsolete.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
2021-08-06 08:53:26 +02:00
Peter Krempa
18e65eef04 xenParseXMDisk: Use automatic memory clearing and remove 'ret' variable
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
2021-08-06 08:53:26 +02:00
Peter Krempa
a31864e60a prlsdkAddDomainVideoInfoCt: Remove pointless cleanup section
'video' will only ever be NULL after the 'cleanup' label thus there's no
need to use 'virDomainVideoDefFree'. In fact we can fully remove the
cleanup section and 'ret' variable by returning directly from failure
points.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
2021-08-06 08:53:26 +02:00
Peter Krempa
f90de01763 util: alloc: Completely replace VIR_APPEND_ELEMENT_QUIET by VIR_APPEND_ELEMENT
VIR_APPEND_ELEMENT doesn't report any errors now so we can remove
VIR_APPEND_ELEMENT_QUIET and replace all uses by VIR_APPEND_ELEMENT

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
2021-08-06 08:53:25 +02:00
Peter Krempa
98f6f2081d util: alloc: Reimplement VIR_APPEND_ELEMENT using virAppendElement
Use virAppendElement instead of virInsertElementsN to implement
VIR_APPEND_ELEMENT which allows us to remove error handling as the
only relevant errors were removed when switching to aborting memory
allocation functions.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
2021-08-06 08:53:25 +02:00
Peter Krempa
8c22b28dbe util: alloc: Reimplement VIR_APPEND_ELEMENT_QUIET using virAppendElement
For now it was an alias to VIR_APPEND_ELEMENT. Use virAppendElement
directly until VIR_APPEND_ELEMENT is refactored too and we'll be able to
get rid of VIR_APPEND_ELEMENT_QUIET completely.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
2021-08-06 08:53:25 +02:00
Peter Krempa
592517636f util: alloc: Reimplement VIR_APPEND_ELEMENT_COPY using virAppendElement
Use virAppendElement instead of virInsertElementsN to implement
VIR_APPEND_ELEMENT_COPY which allows us to remove error handling as the
only relevant errors were removed when switching to aborting memory
allocation functions.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
2021-08-06 08:53:25 +02:00
Peter Krempa
0215139bc6 util: alloc: Reimplement VIR_APPEND_ELEMENT_(COPY_)INPLACE using virAppendElement
VIR_APPEND_ELEMENT_INPLACE and VIR_APPEND_ELEMENT_COPY_INPLACE already
ignore the return value from 'virInsertElementsN' which allows a trivial
conversion to virAppendElement without the need for 'ignore_value'.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
2021-08-06 08:53:25 +02:00
Peter Krempa
51c8245847 util: alloc: Introduce virAppendElement helper
The new wrapper calls virInsertElementInternal with the appropriate
arguments without any checks which are unnecessary for appension. This
allows to have no return value.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
2021-08-06 08:53:25 +02:00
Peter Krempa
853fb577d8 virInsertElementsN: Split out actual insertion code
Split out the code doing the movement of the elements and insertion from
the range checks. This will help in adding an error-free version for
appension.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
2021-08-06 08:53:25 +02:00