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* sysdeps/unix/sysv/linux/setrlimit.c: New file. 1999-10-04 Tim Waugh <twaugh@redhat.com>
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Ulrich Drepper
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Nov 6, 1999
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/* Copyright (C) 1999 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 Library General Public License as | ||
published by the Free Software Foundation; either version 2 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 | ||
Library General Public License for more details. | ||
You should have received a copy of the GNU Library General Public | ||
License along with the GNU C Library; see the file COPYING.LIB. If not, | ||
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, | ||
Boston, MA 02111-1307, USA. */ | ||
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#include <errno.h> | ||
#include <sys/param.h> | ||
#include <sys/resource.h> | ||
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#include <sysdep.h> | ||
#include <sys/syscall.h> | ||
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#include "../kernel-features.h" | ||
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/* Linux 2.3.25 introduced a new system call since the types used for | ||
the limits are now unsigned. */ | ||
#if !defined __ASSUME_NEW_GETRLIMIT_SYSCALL && defined __NR_ugetrlimit | ||
static int no_new_getrlimit; | ||
#else | ||
# define no_new_getrlimit 0 | ||
#endif | ||
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int | ||
__setrlimit (resource, rlimits) | ||
enum __rlimit_resource resource; | ||
const struct rlimit *rlimits; | ||
{ | ||
#ifdef __NR_ugetrlimit | ||
if (! no_new_getrlimit) | ||
{ | ||
int result = INLINE_SYSCALL (setrlimit, 2, resource, rlimits); | ||
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# ifndef __ASSUME_NEW_GETRLIMIT_SYSCALL | ||
/* If the system call is available return. */ | ||
if (result != -1 || errno != ENOSYS) | ||
# endif | ||
return result; | ||
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# ifndef __ASSUME_NEW_GETRLIMIT_SYSCALL | ||
/* Remember that the system call is not available. */ | ||
no_new_getrlimit = 1; | ||
# endif | ||
} | ||
#endif | ||
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#ifndef __ASSUME_NEW_GETRLIMIT_SYSCALL | ||
/* We might have to correct the limits values. Since the old values | ||
were signed the new values are too large. */ | ||
rlimits.rlim_cur = MIN ((unsigned long int) rlimits.rlim_cur, | ||
RLIM_INFINITY >> 2); | ||
rlimits.rlim_max = MIN ((unsigned long int) rlimits.rlim_max, | ||
RLIM_INFINITY >> 2); | ||
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/* Fall back on the old system call. */ | ||
return INLINE_SYSCALL (setrlimit, 2, resource, rlimits); | ||
#endif | ||
} | ||
weak_alias (__setrlimit, setrlimit) |