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| author | Christian Brauner <christian.brauner@ubuntu.com> | 2018-02-12 13:32:01 +0100 |
|---|---|---|
| committer | William Hubbs <w.d.hubbs@gmail.com> | 2018-02-23 15:51:12 -0600 |
| commit | 16ff3cd8df6169f73e3d7cf00758a4703f62cbf0 (patch) | |
| tree | d6a27b69598bbf611c0778d5fabbe318cd5f6e57 /src | |
| parent | 38032626a6c2f8e869197999f32ac3634667cc86 (diff) | |
check whether /sys/fs/cgroup is a mountpoint
The current check only tries to detect whether /sys/fs/cgroup exists and
whether it is writable or not. But when the init system doesn't mount
cgroups then /sys/fs/cgroup will just be an empty directory. When paired
with unprivileged containers that mount sysfs this will cause misleading
errors to be printed since /sys/fs/cgroup will be owned by user
nobody:nogroup in this case. Independent of this specific problem this
check will also be misleading when the /sys/fs/cgroup exists and is in
fact writable by the init system but isn't actually a mountpoint.
Note from William. "grep -qs" doesn't need to redirect output to
/dev/null since it is completely silent.
This fixes #209.
Diffstat (limited to 'src')
0 files changed, 0 insertions, 0 deletions