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authorGiuseppe Scrivano <gscrivan@redhat.com>2022-07-12 10:27:42 +0200
committerGiuseppe Scrivano <gscrivan@redhat.com>2022-07-13 09:13:06 +0200
commit4b547a72ab32f86537fec0907c0fbbb98595a688 (patch)
tree139ffd5665e858c6c69b8abb17a30e0e3f9b734f /utils
parent255740bdf8a45e644039a83082d6f829c1018512 (diff)
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podman: move MaybeMoveToSubCgroup to utils/
Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
Diffstat (limited to 'utils')
-rw-r--r--utils/utils.go20
1 files changed, 20 insertions, 0 deletions
diff --git a/utils/utils.go b/utils/utils.go
index 997de150d..7cf28fda5 100644
--- a/utils/utils.go
+++ b/utils/utils.go
@@ -190,3 +190,23 @@ func MovePauseProcessToScope(pausePidPath string) {
}
}
}
+
+// MaybeMoveToSubCgroup moves the current process in a sub cgroup when
+// it is running in the root cgroup on a system that uses cgroupv2.
+func MaybeMoveToSubCgroup() error {
+ unifiedMode, err := cgroups.IsCgroup2UnifiedMode()
+ if err != nil {
+ return err
+ }
+ if !unifiedMode {
+ return nil
+ }
+ cgroup, err := GetOwnCgroup()
+ if err != nil {
+ return err
+ }
+ if cgroup == "/" {
+ return MoveUnderCgroupSubtree("init")
+ }
+ return nil
+}