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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>
This commit is contained in:
Michael Kerrisk 2016-07-02 00:45:20 +02:00
parent b8bc577b89
commit f69c2584a9
1 changed files with 9 additions and 7 deletions
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16
man2/getpriority.2
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@ -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