Commit Graph

66 Commits

Author SHA1 Message Date
Daniel P. Berrangé
568a417224 Enforce a standard header file guard symbol name
Require that all headers are guarded by a symbol named

  LIBVIRT_$FILENAME

where $FILENAME is the uppercased filename, with all characters
outside a-z changed into '_'.

Note we do not use a leading __ because that is technically a
namespace reserved for the toolchain.

Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
2018-12-14 10:47:13 +00:00
Daniel P. Berrangé
600462834f Remove all Author(s): lines from source file headers
In many files there are header comments that contain an Author:
statement, supposedly reflecting who originally wrote the code.
In a large collaborative project like libvirt, any non-trivial
file will have been modified by a large number of different
contributors. IOW, the Author: comments are quickly out of date,
omitting people who have made significant contribitions.

In some places Author: lines have been added despite the person
merely being responsible for creating the file by moving existing
code out of another file. IOW, the Author: lines give an incorrect
record of authorship.

With this all in mind, the comments are useless as a means to identify
who to talk to about code in a particular file. Contributors will always
be better off using 'git log' and 'git blame' if they need to  find the
author of a particular bit of code.

This commit thus deletes all Author: comments from the source and adds
a rule to prevent them reappearing.

The Copyright headers are similarly misleading and inaccurate, however,
we cannot delete these as they have legal meaning, despite being largely
inaccurate. In addition only the copyright holder is permitted to change
their respective copyright statement.

Reviewed-by: Erik Skultety <eskultet@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
2018-12-13 16:08:38 +00:00
John Ferlan
99b8ef7a98 tests: Augment vcgrouptest to add virCgroupGetMemoryStat
Add a test to fetch the GetMemoryStat output. This only gets
data for v1 only right now since the v2 data from commit 61ff6021
is rather useless returning all 0's. The v1 data was originally
added in commit d1452470.

Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
2018-11-14 14:45:02 -05:00
John Ferlan
4608af30f9 tests: Use correct function name in error path
Commit id 5eb61e6846 neglected to change the name in the wrong value
output to virCgroupGetPercpuStats from virCgroupGetMemoryUsage.

Signed-off-by: John Ferlan <jferlan@redhat.com>
2018-11-07 18:18:42 -05:00
Pavel Hrdina
a26de856f9 vircgrouptest: add hybrid tests
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
2018-10-05 15:53:29 +02:00
Pavel Hrdina
edf59855cf vircgrouptest: add cgroup v2 tests
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
2018-10-05 15:53:29 +02:00
Pavel Hrdina
2a3df5fac5 vircgrouptest: prepare validateCgroup for cgroupv2
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
2018-10-05 15:53:29 +02:00
Pavel Hrdina
1981c79c4b vircgrouptest: add detect mounts test for hybrid cgroups
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
2018-10-05 15:53:29 +02:00
Pavel Hrdina
8f43c7a698 vircgrouptest: add detect mounts test for cgroup v2
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
2018-10-05 15:53:29 +02:00
Pavel Hrdina
9f8d170dab vircgrouptest: prepare testCgroupDetectMounts for cgroup v2
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
2018-10-05 15:53:29 +02:00
Pavel Hrdina
9b9c6528a2 vircgrouptest: introduce initFakeFS and cleanupFakeFS helpers
We need to configure multiple env variables for each set of tests so
create helper functions to do that.

Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
2018-10-05 15:53:29 +02:00
Pavel Hrdina
65ba48d267 vircgroup: rename controllers to legacy
With the introduction of cgroup v2 there are new names used with
cgroups based on which version is used:

    - legacy: cgroup v1
    - unified: cgroup v2
    - hybrid: cgroup v1 and cgroup v2

Let's use 'legacy' instead of 'cgroupv1' or 'controllers' in our code.

Reviewed-by: Fabiano Fidêncio <fidencio@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
2018-09-25 13:40:22 +02:00
Pavel Hrdina
f60af21594 vircgroup: detect available backend for cgroup
We need to update one test-case because now new cgroup object will be
created only if there is any cgroup backend available.

Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
2018-09-25 13:40:22 +02:00
Pavel Hrdina
8b62008d2b vircgrouptest: call virCgroupNewSelf instead virCgroupDetectMounts
This will be required once cgroup v2 is introduced.  The cgroup
detection is not simple and we will have multiple backends so we
should not just jump into the middle of the detection code.

In order to use virCgroupNewSelf we need to create all the remaining
data files:

    - {name}.cgroups represents /proc/cgroups, it is a list of cgroup
      controllers compiled into kernel

    - {name}.self.cgroup represents /proc/self/cgroup, it describes
      cgroups to which the process belongs

For "no-cgroups" we need to modify the expected behavior because
virCgroupNewSelf() will fail if there are no controllers available.

Reviewed-by: Fabiano Fidêncio <fidencio@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
2018-09-25 09:59:23 +02:00
Pavel Hrdina
4988f4b347 vircgrouptest: call virCgroupDetectMounts directly
Because we can set which files to return for cgroup tests there
is no need to have special function tailored to run tests.

Reviewed-by: Fabiano Fidêncio <fidencio@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
2018-09-25 09:59:23 +02:00
Pavel Hrdina
5cf1b25708 vircgroupmock: rewrite cgroup fopen mocking
Move all the cgroup data into separate files out of vircgroupmock.c
and rework the fopen function to load data from files.  This will
make it easier to add more test cases.

Reviewed-by: Fabiano Fidêncio <fidencio@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
2018-09-25 09:59:23 +02:00
Erik Skultety
5165ff0971 src: More cleanup of some system headers already contained in internal.h
All of the ones being removed are pulled in by internal.h. The only
exception is sanlock which expects the application to include <stdint.h>
before sanlock's headers, because sanlock prototypes use fixed width
int, but they don't include stdint.h themselves, so we have to leave
that one in place.

Signed-off-by: Erik Skultety <eskultet@redhat.com>
Acked-by: Michal Privoznik <mprivozn@redhat.com>
2018-09-20 10:16:39 +02:00
Michal Privoznik
6f9fb4fa01 Revert "util: cgroup: modify virCgroupFree to take virCgroupPtr"
This reverts commit 0f80c71822.

Turns out, our code relies on virCgroupFree(&var) setting
var = NULL.

Conflicts:
  src/util/vircgroup.c: context because 94f1855f09 is not
  reverted.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
2018-07-30 13:30:11 +02:00
Sukrit Bhatnagar
0f80c71822 util: cgroup: modify virCgroupFree to take virCgroupPtr
Modify virCgroupFree function signature to take a value of type
virCgroupPtr instead of virCgroupPtr * as the parameter.

Change the argument type in all calls to virCgroupFree function
from virCgroupPtr * to virCgroupPtr. This is a step towards
having consistent function signatures for Free helpers so that
they can be used with VIR_AUTOPTR cleanup macro.

Signed-off-by: Sukrit Bhatnagar <skrtbhtngr@gmail.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
2018-07-27 17:19:17 +02:00
Andrea Bolognani
3e7db8d3e8 Remove backslash alignment attempts
Right-aligning backslashes when defining macros or using complex
commands in Makefiles looks cute, but as soon as any changes is
required to the code you end up with either distractingly broken
alignment or unnecessarily big diffs where most of the changes
are just pushing all backslashes a few characters to one side.

Generated using

  $ git grep -El '[[:blank:]][[:blank:]]\\$' | \
    grep -E '*\.([chx]|am|mk)$$' | \
    while read f; do \
      sed -Ei 's/[[:blank:]]*[[:blank:]]\\$/ \\/g' "$f"; \
    done

Signed-off-by: Andrea Bolognani <abologna@redhat.com>
2017-11-03 13:24:12 +01:00
Michal Privoznik
1fe68b2e73 vircgrouptest: Don't leak @cgroup
In these test cases we create internal representation of cgroup,
however, never free it.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
2017-08-10 11:22:27 +02:00
Juan Hernandez
dacd160d74 Avoid hidden cgroup mount points
Currently the scan of the /proc/mounts file used to find cgroup mount
points doesn't take into account that mount points may hidden by other
mount points. For, example in certain Kubernetes environments the
/proc/mounts contains the following lines:

  cgroup /sys/fs/cgroup/net_prio,net_cls cgroup ...
  tmpfs /sys/fs/cgroup tmpfs ...
  cgroup /sys/fs/cgroup/net_cls,net_prio cgroup ...

In this particular environment the first mount point is hidden by the
second one. The correct mount point is the third one, but libvirt will
never process it because it only checks the first mount point for each
controller (net_cls in this case). So libvirt will try to use the first
mount point, which doesn't actually exist, and the complete detection
process will fail.

To avoid that issue this patch changes the virCgroupDetectMountsFromFile
function so that when there are duplicates it takes the information from
the last line in /proc/mounts. This requires removing the previous
explicit condition to skip duplicates, and adding code to free the
memory used by the processing of duplicated lines.

Related-To: https://bugzilla.redhat.com/1468214
Related-To: https://github.com/kubevirt/libvirt/issues/4
Signed-off-by: Juan Hernandez <jhernand@redhat.com>
2017-07-13 09:37:52 +02:00
Andrea Bolognani
4ceac4bf29 tests: Rename VIRT_TEST_* macros to VIR_TEST_*
We use the "vir" prefix pretty consistently in our
APIs, both external and internal, which made these
macros stood out.
2017-04-04 17:30:03 +02:00
Daniel P. Berrange
eaf18f4c2b nodeinfo: move host CPU APIs out into virhostcpu.c file
Move all APIs with a virHostCPU name prefix out into new
util/virhostcpu.h & util/virhostcpu.c files

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
2016-06-09 18:31:11 +01:00
Daniel P. Berrange
4053350bfe nodeinfo: rename all CPU APIs to have a virHostCPU prefix
In preparation for moving all the CPU related APIs out of
the nodeinfo file, give them a virHostCPU name prefix.

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
2016-06-09 18:08:15 +01:00
Daniel P. Berrange
08ea852c25 nodeinfo: remove sysfs_prefix from all methods
Nearly all the methods in the nodeinfo file are given a
'const char *sysfs_prefix' parameter to override the
default sysfs path (/sys/devices/system). Every single
caller passes in NULL for this, except one use in the
unit tests. Furthermore this parameter is totally
Linux-specific, when the APIs are intended to be cross
platform portable.

This removes the sysfs_prefix parameter and instead gives
a new method linuxNodeInfoSetSysFSSystemPath for use by
the test suite.

For two of the methods this hardcodes use of the constant
SYSFS_SYSTEM_PATH, since the test suite does not need to
override the path for thos methods.

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
2016-06-09 18:00:18 +01:00
Tomáš Ryšavý
239caffb1d tests: Rename virtTestCompareToFile to virTestCompareToFile.
This function doesn't follow our convention of naming functions.
2016-06-08 11:23:12 -04:00
Tomáš Ryšavý
cd7dd1508d tests: Rename virtTestRun to virTestRun.
This function doesn't follow our convention of naming functions.
2016-06-08 11:23:12 -04:00
Peter Krempa
7938b533d5 cgroup: Prepare for sparse vCPU topologies in virCgroupGetPercpuStats
Pass a bitmap of enabled guest vCPUs to virCgroupGetPercpuStats so that
non-continuous vCPU topologies can be used.
2016-02-08 09:51:34 +01:00
Andrea Bolognani
46468c62ff tests: Rename LIBVIRT_FAKE_SYSFS_DIR to LIBVIRT_FAKE_ROOT_DIR
The old name is no longer accurate, since now we're using its value as
the root of the fake filesystem.

No functional changes.
2015-12-09 15:22:58 +01:00
Ishmanpreet Kaur Khera
32cee5b2f0 Avoid using !STREQ and !STRNEQ
We have macros for both positive and negative string matching.
Therefore there is no need to use !STREQ or !STRNEQ. At the same
time as we are dropping this, new syntax-check rule is
introduced to make sure we won't introduce it again.

Signed-off-by: Ishmanpreet Kaur Khera <khera.ishman@gmail.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
2015-10-21 15:03:35 +02:00
John Ferlan
f1a43a0f91 nodeinfo: Add sysfs_prefix to nodeGetCPUCount
Add the sysfs_prefix argument to the call to allow for setting the
path for tests to something other than SYSFS_SYSTEM_PATH.
2015-07-13 15:59:32 -04:00
Cole Robinson
ca32929908 tests: Add virtTestCompareToFile
Replaces a common pattern used in many test files
2015-04-23 17:08:48 -04:00
Eric Blake
9289c85841 tests: fix build on old 32-bit platforms
gcc 4.1.2 (hello RHEL 5) on 32-bit platforms complains:

vircgrouptest.c: In function 'testCgroupGetPercpuStats':
vircgrouptest.c:627: warning: integer constant is too large for 'long' type
vircgrouptest.c:628: warning: this decimal constant is unsigned only in ISO C90
vircgrouptest.c:634: warning: integer constant is too large for 'long' type
vircgrouptest.c:635: warning: this decimal constant is unsigned only in ISO C90
vircgrouptest.c:636: warning: this decimal constant is unsigned only in ISO C90
vircgrouptest.c:644: warning: integer constant is too large for 'long' type

* tests/vircgrouptest.c (testCgroupGetPercpuStats): Use ULL suffix.

Signed-off-by: Eric Blake <eblake@redhat.com>
2015-04-15 12:50:23 -06:00
Michal Privoznik
d65acbde35 vircgroup: Introduce virCgroupControllerAvailable
This new internal API checks if given CGroup controller is
available.  It is going to be needed later when we need to make a
decision whether pin domain memory onto NUMA nodes using cpuset
CGroup controller or using numa_set_membind().

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
2015-04-08 11:54:24 +02:00
Jiri Denemark
2dbfa716e8 tests: Add tests for virCgroupDetectMounts
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
2015-03-18 09:53:24 +01:00
Ján Tomko
b54f48812d Fix a memory leak in virCgroupGetPercpuStats
Coverity reports that my commit af1c98e introduced
two memory leaks:
the cpumap if ncpus == 0 in virCgroupGetPercpuStats
and the params array in the test of the function.
2015-01-26 16:13:06 +01:00
Ján Tomko
d66e136bd5 Fix build with older gcc
My commit af1c98e4 broke the build on RHEL-6:
vircgrouptest.c: In function 'testCgroupGetPercpuStats':
vircgrouptest.c:566: error: nested extern declaration of
'_gl_verify_function2' [-Wnested-externs]

The only thing that needs checking is that the array size
is at least EXPECTED_NCPUS, to prevent access beyond the array.

We can ensure the minimum size also by specifying the array
size upfront.
2015-01-23 10:35:20 +01:00
Ján Tomko
af1c98e406 Fix virCgroupGetPercpuStats with non-continuous present CPUs
Per-cpu stats are only shown for present CPUs in the cgroups,
but we were only parsing the largest CPU number from
/sys/devices/system/cpu/present and looking for stats even for
non-present CPUs.
This resulted in:
internal error: cpuacct parse error
2015-01-22 17:01:11 +01:00
Ján Tomko
897808e74f Extend virCgroupGetPercpuStats to fill in vcputime too
Currently, virCgroupGetPercpuStats is only used by the LXC driver,
filling out the CPUTIME stats. qemuDomainGetPercpuStats does this
and also filles out VCPUTIME stats.

Extend virCgroupGetPercpuStats to also report VCPUTIME stats if
nvcpupids is non-zero. In the LXC driver, we don't have cpupids.
In the QEMU driver, there is at least one cpupid for a running domain,
so the behavior shouldn't change for QEMU either.

Also rename getSumVcpuPercpuStats to virCgroupGetPercpuVcpuSum.
2014-04-09 16:24:08 +02:00
Ján Tomko
2dcdb7f654 Indent top-level labels by one space in tests/ 2014-03-25 14:58:41 +01:00
Daniel P. Berrange
2835c1e730 Add virLogSource variables to all source files
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>
2014-03-18 14:29:22 +00:00
Martin Kletzander
cc9c62fef9 Require spaces around equality comparisons
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>
2014-03-18 11:29:44 +01:00
Eric Blake
e203bef592 build: fix build on 32-bit hosts
vircgrouptest.c: In function 'testCgroupGetPercpuStats':
vircgrouptest.c:543: warning: integer constatnt is too large for 'long' type

Signed-off-by: Eric Blake <eblake@redhat.com>
2014-02-21 17:21:58 -07:00
Thorsten Behrens
5eb61e6846 Add unit test for virCgroupGetPercpuStats. 2014-02-20 16:20:10 +01:00
Thorsten Behrens
977a187ad7 Add unit test for virCgroupGetMemoryUsage. 2014-02-20 16:20:10 +01:00
Thorsten Behrens
9ce8a7c5c5 Add unit test for virCgroupGetBlkioIo*Serviced 2014-02-20 16:20:09 +01:00
Daniel P. Berrange
eee6eb666c Remove test case average timing
The test case average timing code has not been used by any test
case ever. Delete it to remove complexity.

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
2013-10-08 12:39:30 +01:00
Daniel P. Berrange
a48838ad2e Fix launching of VMs on when only logind part of systemd is present
Debian systems may run the 'systemd-logind' daemon, which causes the
/sys/fs/cgroup/systemd  mount to be setup, but no other cgroup
controllers are created. While the LXC driver considers cgroups to
be mandatory, the QEMU driver is supposed to accept them as optional.

We detect whether they are present by looking in /proc/mounts for
any mounts of type 'cgroups', but this is not sufficient. We need to
skip any named mounts (as seen by a name=XXX string in the mount
options), so that we only detect actual resource controllers.

http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=721979

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
2013-09-12 11:32:36 +01:00
Daniel P. Berrange
f0b6d8d472 Fix cgroups when all are mounted on /sys/fs/cgroup
Some users in Ubuntu/Debian seem to have a setup where all the
cgroup controllers are mounted on /sys/fs/cgroup rather than
any /sys/fs/cgroup/<controller> name. In the loop which detects
which controllers are present for a mount point we were modifying
'mnt_dir' field in the 'struct mntent' var, but not always restoring
the original value. This caused detection to break in the all-in-one
mount setup.

Fix that logic bug and add test case coverage for this mount
setup.

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
2013-09-11 11:45:38 +01:00