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| author | Michael Kerrisk <mtk.manpages@gmail.com> | 2018-01-08 21:43:56 +0100 |
|---|---|---|
| committer | Michael Kerrisk <mtk.manpages@gmail.com> | 2018-01-10 00:35:47 +0100 |
| commit | 668ef765864078b0d08c1b496701159cf4d29b10 (patch) | |
| tree | 7e758643be8e4466dac2f4652b7baeafaeb3d213 /man7/cgroups.7 | |
| parent | 475ceab1301d9519780c958d3aea89911f6bd9e3 (diff) | |
| download | man-pages-668ef765864078b0d08c1b496701159cf4d29b10.tar.gz | |
cgroups.7: Document /sys/kernel/cgroup/delegate
Reviewed-by: Roman Gushchin <guro@fb.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
Diffstat (limited to 'man7/cgroups.7')
| -rw-r--r-- | man7/cgroups.7 | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/man7/cgroups.7 b/man7/cgroups.7 index b5a527cc28..f6eac8a5ee 100644 --- a/man7/cgroups.7 +++ b/man7/cgroups.7 @@ -906,6 +906,10 @@ in order to distribute resources into the subtree, and the delegatee should not have permission to change the resources that are distributed into the delegated subtree. .PP +See also the discussion of the +.IR /sys/kernel/cgroup/delegate +file in NOTES. +.PP After the aforementioned steps have been performed, the delegatee can create child cgroups within the delegated subtree and move processes between cgroups in the subtree. @@ -1506,6 +1510,26 @@ This field contains the pathname of the control group in the hierarchy to which the process belongs. This pathname is relative to the mount point of the hierarchy. .RE +.\" +.SS /sys/kernel/cgroup files +.TP +.IR /sys/kernel/cgroup/delegate " (since Linux 4.15)" +.\" commit 01ee6cfb1483fe57c9cbd8e73817dfbf9bacffd3 +This file exports a list of the cgroups v2 files +(one per line) that are delegatable +(i.e., whose ownership should be changed to the user ID of the delegatee). +In the future, the set of delegatable files may change or grow, +and this file provides a way for the kernel to inform +user-space applications of which files must be delegated. +As at Linux 4.15, one sees the following when inspecting this file: +.IP +.EX +.in +4n +$ \fBcat /sys/kernel/cgroup/delegate\fP +cgroup.procs +cgroup.subtree_control +.in +.EE .SH ERRORS The following errors can occur for .BR mount (2): |