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| author | Matt Mackall <mpm@selenic.com> | 2005-05-01 08:59:00 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-05-01 08:59:00 -0700 |
| commit | e43379f10b42194b8a6e1de342cfb44463c0f6da (patch) | |
| tree | bf6463200dc7e14f266b7f12807c7cbfbb6700c2 /kernel/sys.c | |
| parent | 9fc1427a01a9df3605e219c6de0c59c4639209a1 (diff) | |
| download | lwn-e43379f10b42194b8a6e1de342cfb44463c0f6da.tar.gz lwn-e43379f10b42194b8a6e1de342cfb44463c0f6da.zip | |
[PATCH] nice and rt-prio rlimits
Add a pair of rlimits for allowing non-root tasks to raise nice and rt
priorities. Defaults to traditional behavior. Originally written by
Chris Wright.
The patch implements a simple rlimit ceiling for the RT (and nice) priorities
a task can set. The rlimit defaults to 0, meaning no change in behavior by
default. A value of 50 means RT priority levels 1-50 are allowed. A value of
100 means all 99 privilege levels from 1 to 99 are allowed. CAP_SYS_NICE is
blanket permission.
(akpm: see http://www.uwsg.iu.edu/hypermail/linux/kernel/0503.1/1921.html for
tips on integrating this with PAM).
Signed-off-by: Matt Mackall <mpm@selenic.com>
Acked-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'kernel/sys.c')
| -rw-r--r-- | kernel/sys.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/sys.c b/kernel/sys.c index df2ddcc6863b..7f43d6e62c7a 100644 --- a/kernel/sys.c +++ b/kernel/sys.c @@ -227,7 +227,7 @@ static int set_one_prio(struct task_struct *p, int niceval, int error) error = -EPERM; goto out; } - if (niceval < task_nice(p) && !capable(CAP_SYS_NICE)) { + if (niceval < task_nice(p) && !can_nice(p, niceval)) { error = -EACCES; goto out; } |