diff options
| author | Michael Kerrisk <mtk.manpages@gmail.com> | 2016-07-02 00:45:20 +0200 |
|---|---|---|
| committer | Michael Kerrisk <mtk.manpages@gmail.com> | 2016-07-02 00:45:20 +0200 |
| commit | f69c2584a9f9df4b4cd11286276ae8e348efa648 (patch) | |
| tree | bd2a5c0784ebf66cfbeeb8312a056ed6682ec424 | |
| parent | b8bc577b896e4db7ce0f8f1bdb6f9eb776b79f1a (diff) | |
| download | man-pages-f69c2584a9f9df4b4cd11286276ae8e348efa648.tar.gz | |
getpriority.2: Make discussion of RLIMIT_NICE more prominent
The discussion of RLIMIT_NICE was hidden under the EPERM error,
where it was difficult to find. Place some relevant text in
DESCRIPTION.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
| -rw-r--r-- | man2/getpriority.2 | 16 |
1 files changed, 9 insertions, 7 deletions
diff --git a/man2/getpriority.2 b/man2/getpriority.2 index 619956f5c3..88ea1dfee7 100644 --- a/man2/getpriority.2 +++ b/man2/getpriority.2 @@ -106,7 +106,15 @@ The .BR setpriority () call sets the priorities of all of the specified processes to the specified value. -Only the superuser may lower priorities. + +Traditionally, only a privileged process could lower the nice value +(i.e., set a higher priority). +However, since Linux 2.6.12, an unprivileged process can decrease +the nice value of a target process that has a suitable +.BR RLIMIT_NICE +soft limit; see +.BR getrlimit (2) +for details. .SH RETURN VALUE Since .BR getpriority () @@ -147,12 +155,6 @@ The caller attempted to set a lower nice value have the required privilege (on Linux: did not have the .B CAP_SYS_NICE capability). -Since Linux 2.6.12, this error occurs only if the caller attempts -to set a process priority outside the range of the -.B RLIMIT_NICE -soft resource limit of the target process; see -.BR getrlimit (2) -for details. .TP .B EPERM A process was located, but its effective user ID did not match |