mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-10 15:20:10 +00:00
ad2a3c0750
sysdeps/posix/pause.c implementation instead. 2006-08-09 Jakub Jelinek <jakub@redhat.com> * sysdeps/unix/nice.c (nice): Transform EACCES errno from setpriority to EPERM.
54 lines
1.5 KiB
C
54 lines
1.5 KiB
C
/* Copyright (C) 1992, 1996, 1997, 2001, 2002, 2006
|
|
Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, write to the Free
|
|
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
|
|
02111-1307 USA. */
|
|
|
|
#include <errno.h>
|
|
#include <unistd.h>
|
|
#include <sys/resource.h>
|
|
|
|
/* Increment the scheduling priority of the calling process by INCR.
|
|
The superuser may use a negative INCR to decrement the priority. */
|
|
int
|
|
nice (int incr)
|
|
{
|
|
int save;
|
|
int prio;
|
|
int result;
|
|
|
|
/* -1 is a valid priority, so we use errno to check for an error. */
|
|
save = errno;
|
|
__set_errno (0);
|
|
prio = getpriority (PRIO_PROCESS, 0);
|
|
if (prio == -1)
|
|
{
|
|
if (errno != 0)
|
|
return -1;
|
|
else
|
|
__set_errno (save);
|
|
}
|
|
|
|
result = setpriority (PRIO_PROCESS, 0, prio + incr);
|
|
if (result == -1)
|
|
{
|
|
if (errno == EACCES)
|
|
errno = EPERM;
|
|
return -1;
|
|
}
|
|
return getpriority (PRIO_PROCESS, 0);
|
|
}
|