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vircgroup: introduce virCgroupDetectControllers helper

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Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
This commit is contained in:
Pavel Hrdina 2020-10-14 11:17:26 +02:00
parent 20da059e18
commit f8ca962589
1 changed files with 33 additions and 18 deletions
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51
src/util/vircgroup.c
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@ -410,6 +410,38 @@ virCgroupValidatePlacement(virCgroupPtr group,
}
static int
virCgroupDetectControllers(virCgroupPtr group,
int controllers,
virCgroupPtr parent)
{
size_t i;
int controllersAvailable = 0;
for (i = 0; i < VIR_CGROUP_BACKEND_TYPE_LAST; i++) {
int rc;
if (!group->backends[i])
continue;
rc = group->backends[i]->detectControllers(group, controllers, parent,
controllersAvailable);
if (rc < 0)
return -1;
controllersAvailable |= rc;
}
/* Check that at least 1 controller is available */
if (controllersAvailable == 0) {
virReportSystemError(ENXIO, "%s",
_("At least one cgroup controller is required"));
return -1;
}
return 0;
}
static int
virCgroupDetect(virCgroupPtr group,
pid_t pid,
@ -417,9 +449,6 @@ virCgroupDetect(virCgroupPtr group,
const char *path,
virCgroupPtr parent)
{
size_t i;
int controllersAvailable = 0;
VIR_DEBUG("group=%p controllers=%d path=%s parent=%p",
group, controllers, path, parent);
@ -450,22 +479,8 @@ virCgroupDetect(virCgroupPtr group,
if (virCgroupValidatePlacement(group, pid) < 0)
return -1;
for (i = 0; i < VIR_CGROUP_BACKEND_TYPE_LAST; i++) {
if (group->backends[i]) {
int rc = group->backends[i]->detectControllers(group, controllers, parent,
controllersAvailable);
if (rc < 0)
return -1;
controllersAvailable |= rc;
}
}
/* Check that at least 1 controller is available */
if (controllersAvailable == 0) {
virReportSystemError(ENXIO, "%s",
_("At least one cgroup controller is required"));
if (virCgroupDetectControllers(group, controllers, parent) < 0)
return -1;
}
return 0;
}