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vircgroup: detect available backend for cgroup

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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>
This commit is contained in:
Pavel Hrdina 2018-09-12 13:47:21 +02:00
parent 57d35b72c9
commit f60af21594
3 changed files with 24 additions and 35 deletions
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18
src/util/vircgroup.c
View File

@ -707,10 +707,28 @@ virCgroupDetect(virCgroupPtr group,
virCgroupPtr parent)
{
int rc;
size_t i;
virCgroupBackendPtr *backends = virCgroupBackendGetAll();
VIR_DEBUG("group=%p controllers=%d path=%s parent=%p",
group, controllers, path, parent);
if (!backends)
return -1;
for (i = 0; i < VIR_CGROUP_BACKEND_TYPE_LAST; i++) {
if (backends[i] && backends[i]->available()) {
group->backend = backends[i];
break;
}
}
if (!group->backend) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("no cgroup backend available"));
return -1;
}
if (parent) {
if (virCgroupCopyMounts(group, parent) < 0)
return -1;

3
src/util/vircgrouppriv.h
View File

@ -30,6 +30,7 @@
# define __VIR_CGROUP_PRIV_H__
# include "vircgroup.h"
# include "vircgroupbackend.h"
struct _virCgroupController {
int type;
@ -47,6 +48,8 @@ typedef virCgroupController *virCgroupControllerPtr;
struct _virCgroup {
char *path;
virCgroupBackendPtr backend;
virCgroupController controllers[VIR_CGROUP_CONTROLLER_LAST];
};

38
tests/vircgrouptest.c
View File

@ -113,16 +113,6 @@ const char *mountsAllInOne[VIR_CGROUP_CONTROLLER_LAST] = {
[VIR_CGROUP_CONTROLLER_BLKIO] = "/not/really/sys/fs/cgroup",
[VIR_CGROUP_CONTROLLER_SYSTEMD] = NULL,
};
const char *mountsLogind[VIR_CGROUP_CONTROLLER_LAST] = {
[VIR_CGROUP_CONTROLLER_CPU] = NULL,
[VIR_CGROUP_CONTROLLER_CPUACCT] = NULL,
[VIR_CGROUP_CONTROLLER_CPUSET] = NULL,
[VIR_CGROUP_CONTROLLER_MEMORY] = NULL,
[VIR_CGROUP_CONTROLLER_DEVICES] = NULL,
[VIR_CGROUP_CONTROLLER_FREEZER] = NULL,
[VIR_CGROUP_CONTROLLER_BLKIO] = NULL,
[VIR_CGROUP_CONTROLLER_SYSTEMD] = "/not/really/sys/fs/cgroup/systemd",
};
const char *links[VIR_CGROUP_CONTROLLER_LAST] = {
[VIR_CGROUP_CONTROLLER_CPU] = "/not/really/sys/fs/cgroup/cpu",
@ -146,17 +136,6 @@ const char *linksAllInOne[VIR_CGROUP_CONTROLLER_LAST] = {
[VIR_CGROUP_CONTROLLER_SYSTEMD] = NULL,
};
const char *linksLogind[VIR_CGROUP_CONTROLLER_LAST] = {
[VIR_CGROUP_CONTROLLER_CPU] = NULL,
[VIR_CGROUP_CONTROLLER_CPUACCT] = NULL,
[VIR_CGROUP_CONTROLLER_CPUSET] = NULL,
[VIR_CGROUP_CONTROLLER_MEMORY] = NULL,
[VIR_CGROUP_CONTROLLER_DEVICES] = NULL,
[VIR_CGROUP_CONTROLLER_FREEZER] = NULL,
[VIR_CGROUP_CONTROLLER_BLKIO] = NULL,
[VIR_CGROUP_CONTROLLER_SYSTEMD] = NULL,
};
struct _detectMountsData {
const char *file;
@ -554,24 +533,13 @@ static int testCgroupNewForSelfLogind(const void *args ATTRIBUTE_UNUSED)
{
virCgroupPtr cgroup = NULL;
int ret = -1;
const char *placement[VIR_CGROUP_CONTROLLER_LAST] = {
[VIR_CGROUP_CONTROLLER_CPU] = NULL,
[VIR_CGROUP_CONTROLLER_CPUACCT] = NULL,
[VIR_CGROUP_CONTROLLER_CPUSET] = NULL,
[VIR_CGROUP_CONTROLLER_MEMORY] = NULL,
[VIR_CGROUP_CONTROLLER_DEVICES] = NULL,
[VIR_CGROUP_CONTROLLER_FREEZER] = NULL,
[VIR_CGROUP_CONTROLLER_BLKIO] = NULL,
[VIR_CGROUP_CONTROLLER_SYSTEMD] = "/",
};
if (virCgroupNewSelf(&cgroup) < 0) {
fprintf(stderr, "Cannot create cgroup for self\n");
if (virCgroupNewSelf(&cgroup) == 0) {
fprintf(stderr, "Expected cgroup creation to fail.\n");
goto cleanup;
}
ret = validateCgroup(cgroup, "", mountsLogind, linksLogind, placement);
ret = 0;
cleanup:
virCgroupFree(&cgroup);
return ret;