From 2a4df0c08245fd837f798fb3f8a0cee7ef5ecdb3 Mon Sep 17 00:00:00 2001 From: Ismael Luceno Date: Sat, 15 Aug 2026 04:00:00 +0100 Subject: [PATCH 3/5] Explain cgroup setup failures Upstream-Status: Submitted [https://github.com/89luca89/lilipod/pull/50] Signed-off-by: Ismael Luceno --- pkg/containerutils/rootfs_utils.go | 17 ++++++++++++----- 1 file changed, 12 insertions(+), 5 deletions(-) diff --git a/pkg/containerutils/rootfs_utils.go b/pkg/containerutils/rootfs_utils.go index b21926d68002..137f42779306 100644 --- a/pkg/containerutils/rootfs_utils.go +++ b/pkg/containerutils/rootfs_utils.go @@ -84,19 +84,26 @@ func setupCgroupfs(conf utils.Config) error { // move our process to a dedicated scope, so that eventual init systems // won't encour problems with unknown PIDs - err = os.MkdirAll("/sys/fs/cgroup/container-"+conf.Names+".scope", 0o755) + scope := "/sys/fs/cgroup/container-" + conf.Names + ".scope" + err = os.MkdirAll(scope, 0o755) if err != nil { - return err + return fmt.Errorf("cannot create cgroup %s: %w", scope, err) } - file, err := os.Create("/sys/fs/cgroup/container-" + conf.Names + ".scope/cgroup.procs") + file, err := os.Create(scope + "/cgroup.procs") if err != nil { - return err + return fmt.Errorf("cannot open %s/cgroup.procs: %w", scope, err) } + defer file.Close() + _, err = fmt.Fprint(file, 0) + if err != nil { + return fmt.Errorf("cannot move the container process into %s: %w\n", + scope, err) + } - return err + return nil } // we need to setup the /dev/pts mountpoint, by mounting a new devpts filesystem