Via coccinelle (not the handbag!)
spatches used:
@ rule1 @
identifier a, b;
symbol NULL;
@@
- b = a;
... when != a
- a = NULL;
+ b = g_steal_pointer(&a);
@@
- *b = a;
... when != a
- a = NULL;
+ *b = g_steal_pointer(&a);
Signed-off-by: Kristina Hanicova <khanicov@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
The parent array takes ownership of the inserted value once all checks
pass. Don't make the callers second-guess when that happens and modify
the function to take a double pointer so that it can be cleared once the
ownership is taken.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
The parent object takes ownership of the inserted value once all checks
pass. Don't make the callers second-guess when that happens and modify
the function to take a double pointer so that it can be cleared once the
ownership is taken.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
The non-transaction wrapper is useful for code paths which want to
delete individual bitmaps or for cleanup after a failed job where we
want to attempt to delete every bitmap individually to prevent a failure
from cleaning up the rest.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
Such images don't support stuff like dirty bitmaps. Note that the
synthetic test for detecting bitmaps is used as an example to prevent
adding additional test cases.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
The conversion removes the use of virStringListAdd/virStringListRemove
which try to add dynamic properties to a string list which is really
inefficient.
Storing the dbus VMState ids in a GSList is pretty straightforward and
the slightly increased complexity of the code will be paid back by
removing the string list helpers later.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
The correct backend type is 'vc', same as in qemuBuildChrChardevStr()
where we generate qemu command line.
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
QEMU has the ability to mark machine types as deprecated. This should be
exposed to management applications in the capabilities.
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
QEMU has the ability to mark CPUs as deprecated. This should be exposed
to management applications in the domain capabilities.
This attribute is only set when the model is actually deprecated.
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
All callers of qemuMonitorJSONMakeCommandInternal will benefit from
making @arguments a double pointer and passing it to
virJSONValueObjectCreate directly which will clear it if it steals the
value.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Prepare for a refactor of qemuMonitorJSONMakeCommandInternal.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Use automatic memory freeing and remove the 'cleanup' label and 'ret'
variable.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
This allows simplification of the caller as well as will enable a later
refactor of qemuMonitorJSONMakeCommandInternal.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
In recent commit of bf8bd93df0 (and friends) we switched the way
we process queried command line arguments: from string lists to
virJSONValue stored in a hash table. To achieve this
qemuMonitorJSONGetCommandLineOptions() helper was introduced
which executes the "query-command-line-options" monitor command
and then calls virJSONValueArrayForeachSteal() to process the
output. The array process function is also given
qemuMonitorJSONGetCommandLineOptionsWorker() as the callback
which is called over each item of the returned array. This
callback then steals "parameters" attribute of each array iteam
storing it in the hash table, but it leaves behind "option"
attribute (because it's g_strdup()-ed). After all of this, the
callback returns 0 which is a signal to the array processing
function that the callback took ownership of the array item. But
this is not true. While it removed "parameters" it did not take
the rest ("option" for instance). And therefore, it leads to a
memory leak:
5,347 (1,656 direct, 3,691 indirect) bytes in 69 blocks are definitely lost in loss record 2,752 of 2,794
at 0x483BEC5: calloc (vg_replace_malloc.c:760)
by 0x4E25A10: g_malloc0 (in /usr/lib64/libglib-2.0.so.0.6400.5)
by 0x4943317: virJSONValueNewObject (virjson.c:569)
by 0x4945692: virJSONParserHandleStartMap (virjson.c:1768)
by 0x5825A86: yajl_do_parse (in /usr/lib64/libyajl.so.2.1.0)
by 0x4945BFA: virJSONValueFromString (virjson.c:1896)
by 0xAF5C115: qemuMonitorJSONIOProcessLine (qemu_monitor_json.c:224)
by 0xAF5C45E: qemuMonitorJSONIOProcess (qemu_monitor_json.c:279)
by 0xAF4BB6C: qemuMonitorIOProcess (qemu_monitor.c:342)
by 0xAF4C444: qemuMonitorIO (qemu_monitor.c:574)
by 0x4FEF846: socket_source_dispatch (in /usr/lib64/libgio-2.0.so.0.6400.5)
by 0x4E1F727: g_main_context_dispatch (in /usr/lib64/libglib-2.0.so.0.6400.5)
The callback must return 1 so that the array item is properly
freed.
Fixes: ebeff6cd57
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
Let's pass along / fill @niothreads rather than trying to make dual
use as a return value and thread count.
This resolves a Coverity issue detected in qemuDomainGetIOThreadsMon
where if qemuDomainObjExitMonitor failed, then a -1 was returned and
overwrite @niothreads causing a memory leak.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Currently it is simply ignored.
Signed-off-by: Nikolay Shirokovskiy <nshirokovskiy@virtuozzo.com>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Currently it is simply ignored.
Signed-off-by: Nikolay Shirokovskiy <nshirokovskiy@virtuozzo.com>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Glib provides g_auto(GStrv) which is in-place replacement of our
VIR_AUTOSTRINGLIST.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Remove the function along with helpers for caching the reply and tests.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Add a new set hander for getting the data for
'query-command-line-options' which returns everything at once and lets
the caller extract the data. This way we don't need to cache the output
of the monitor command for repeated calls.
Note that we will have enough testing of this code path via
qemucapabilitiestest.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
In a few commit back (v6.10.0-5-gb3dad96972) a new helper for
obtaining string arrays from a virJSONObject was introduced:
virJSONValueObjectGetStringArray(). I've identified three places
where it can be used instead of open coding it:
qemuAgentSSHGetAuthorizedKeys(),
qemuMonitorJSONGetStringListProperty() and
qemuMonitorJSONGetCPUDefinitions().
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
There might be more potential users around, I haven't looked thoroughly.
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Tested-by: Han Han <hhan@redhat.com>
Don't hide our use of GHashTable behind our typedef. This will also
promote the use of glibs hash function directly.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Reviewed-by: Matt Coleman <matt@datto.com>
Eliminate cleanup code by using g_autofree.
Signed-off-by: Yi Li <yili@winhong.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Trivial fix to improve readability by combining these into a compound
conditional.
Signed-off-by: Jonathon Jongsma <jjongsma@redhat.com>
Reviewed-by: Laine Stump <laine@redhat.com>
Since QEMU 5.2 (commit-77b285f7f6), QEMU supports 'memory failure'
event, posts event to monitor if hitting a hardware memory error.
Fully support this feature for QEMU.
Test with commit 'libvirt: support memory failure event', build a
little complex environment(nested KVM):
1, install newly built libvirt in L1, and start a L2 vm. run command
in L1:
~# virsh event l2 --event memory-failure
2, run command in L0 to inject MCE to L1:
~# virsh qemu-monitor-command l1 --hmp mce 0 9 0xbd000000000000c0 0xd 0x62000000 0x8c
Test result in l1(recipient hypervisor case):
event 'memory-failure' for domain l2:
recipient: hypervisor
action: ignore
flags:
action required: 0
recursive: 0
Test result in l1(recipient guest case):
event 'memory-failure' for domain l2:
recipient: guest
action: inject
flags:
action required: 0
recursive: 0
Signed-off-by: zhenwei pi <pizhenwei@bytedance.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
It doesn't make much sense to configure the bucket count in the hash
table for each case specifically. Replace all calls of virHashCreate
with virHashNew which has a pre-set size and remove virHashCreate
completely.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
add-fd, remove-fd, and query-fdsets provide functionality that can be
used for passing fds to qemu and closing fdsets that are no longer
necessary.
Signed-off-by: Jonathon Jongsma <jjongsma@redhat.com>
Reviewed-by: Laine Stump <laine@redhat.com>
Add the monitor code, corresponding generator of properties for NBD and
tests validating it against the schema.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Move them to separate conditions to reduce churn
in following patches.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
The machine structure has another (optional) attribute:
default-ram-id, which specifies the alias of the default RAM
object. While the alias is private, it can never change in order
to not break migration. QEMU uses the alias when allocating
regular, not NUMA memory. In order to switch to new command line
and maintain migration, save this ID.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Configuring the cluster size of an image may have performance
implications. This patch allows us to detect cluster size for existing
images so that we will be able to propagate it to new images which are
based on existing images e.g. during snapshots/block-copy/etc.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Both accept a NULL value gracefully and virStringFreeList
does not zero the pointer afterwards, so a straight replace
is safe.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
Use g_autoptr() and remove the now obsolete 'cleanup' label.
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Now that all code paths generate JSON props we can remove the conversion
to command line arguments and back in the monitor code.
Note that the test which is removed in this commit will be replaced by a
stronger testsuite later.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Use automatic pointer cleanup for virJSONValuePtrs to get rid of the
cleanup label and ret variable.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
There is 'numa-mem-supported' machine attribute which specifies
whether '-numa mem=' is supported. Store it in our capabilities
as it will be used in later commits when building the command
line.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Create a hash table of device property names which also stores the
corresponding JSON object so that the detection code can look at the
recently added 'default-value' field and possibly others.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Use automatic cleanup of variables and current style of header.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Helper processes may have their state migrated with QEMU data stream
thanks to the QEMU "dbus-vmstate".
libvirt maintains the list of helpers to be migrated. The
"dbus-vmstate" is added when required, and given the list of helper
Ids that must be migrated, on save & load sides.
See also:
https://git.qemu.org/?p=qemu.git;a=blob;f=docs/interop/dbus-vmstate.rst
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
