libct/cg/sd/v2: fix ENOENT on cgroup delegation #3389
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Apparently, not all files listed in /sys/kernel/cgroup/delegate must exist in every cgroup, so we should ignore ENOENT. Dot not ignore ENOENT on the directory itself though. Change cgroupFilesToChown to not return ".", and refactor it to not do any dynamic slice appending in case we're using the default built-in list of files. Fixes: 35d20c4 Signed-off-by: Kir Kolyshkin <[email protected]>
kolyshkin
added
kind/bug
area/cgroupv2
area/systemd
backport/1.1-todo
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@frasertweedale PTAL |
frasertweedale
approved these changes
Feb 22, 2022
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/lgtm Thanks for the fix @kolyshkin . I'll also create a PR against runtime-spec to add a note about the possibility of missing files. |
frasertweedale
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Feb 22, 2022
Not all files listed in /sys/kernel/cgroup/delegate necessarily exist in all cgroups. For example, see this issue and PR: - opencontainers/runc#3387 - opencontainers/runc#3389 Expand the cgroup ownership semantics to ensure that runtime authors are aware of this possibility and implementations handle it gracefully. Signed-off-by: Fraser Tweedale <[email protected]>
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@opencontainers/runc-maintainers PTAL 🙏🏻 |
AkihiroSuda
reviewed
Mar 4, 2022
| } | ||
| } else { | ||
| filesToChown = append(filesToChown, "cgroup.procs", "cgroup.subtree_control", "cgroup.threads") | ||
| if err != nil { |
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Can we logrus.Debugf the err?
AkihiroSuda
approved these changes
Mar 4, 2022
kolyshkin
added
backport/1.1-done
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Apparently, not all files listed in
/sys/kernel/cgroup/delegatemustexist in every cgroup, so we should ignore ENOENT.
Dot not ignore ENOENT on the directory itself though.
Change
cgroupFilesToChownto not return., and refactor it to not doany dynamic slice appending in case we're using the default built-in
list of files.
Fixes: #3387
Fixes: 35d20c4