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841ea81647
1999-12-07 Scott Bambrough <scottb@netwinder.org> * sysdeps/arm/dl-machine.h (elf_machine_rel): Fixup R_ARM_PC24 relocs if possible. 1999-12-06 Andreas Schwab <schwab@suse.de> * sysdeps/unix/sysv/linux/setrlimit.c: First find out wether the ugetrlimit syscall exists. * sysdeps/unix/sysv/linux/getrlimit.c: Only put versions on exported symbols. * sysdeps/unix/sysv/linux/setrlimit.c: Likewise.
83 lines
2.8 KiB
C
83 lines
2.8 KiB
C
/* Copyright (C) 1999 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#include <errno.h>
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#include <sys/param.h>
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#include <sys/resource.h>
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#include <sysdep.h>
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#include <sys/syscall.h>
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#include "kernel-features.h"
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extern int __syscall_setrlimit (unsigned int resource,
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const struct rlimit *rlimits);
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extern int __syscall_ugetrlimit (unsigned int resource,
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const struct rlimit *rlimits);
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/* Linux 2.3.25 introduced a new system call since the types used for
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the limits are now unsigned. */
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#if defined __NR_ugetrlimit && !defined __ASSUME_NEW_GETRLIMIT_SYSCALL
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extern int __have_no_new_getrlimit; /* from getrlimit.c */
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#endif
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int
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__new_setrlimit (enum __rlimit_resource resource, const struct rlimit *rlimits)
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{
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#ifdef __ASSUME_NEW_GETRLIMIT_SYSCALL
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return INLINE_SYSCALL (setrlimit, 2, resource, rlimits);
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#else
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struct rlimit rlimits_small;
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# ifdef __NR_ugetrlimit
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if (__have_no_new_getrlimit == 0)
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{
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/* Check if the new ugetrlimit syscall exists. We must do this
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first because older kernels don't reject negative rlimit
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values in setrlimit. */
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result = INLINE_SYSCALL (ugetrlimit, 2, resource, &rlimits_small);
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if (result != -1 || errno != ENOSYS)
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/* The syscall exists. */
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__have_no_new_getrlimit = -1;
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else
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/* The syscall does not exist. */
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__have_no_new_getrlimit = 1;
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}
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if (__have_no_new_getrlimit < 0)
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return INLINE_SYSCALL (setrlimit, 2, resource, rlimits);
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# endif
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/* We might have to correct the limits values. Since the old values
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were signed the new values might be too large. */
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rlimits_small.rlim_cur = MIN ((unsigned long int) rlimits->rlim_cur,
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RLIM_INFINITY >> 1);
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rlimits_small.rlim_max = MIN ((unsigned long int) rlimits->rlim_max,
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RLIM_INFINITY >> 1);
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/* Use the adjusted values. */
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return INLINE_SYSCALL (setrlimit, 2, resource, &rlimits_small);
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#endif
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}
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weak_alias (__new_setrlimit, __setrlimit);
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#if defined PIC && DO_VERSIONING
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default_symbol_version (__new_setrlimit, setrlimit, GLIBC_2.1.3);
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#else
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weak_alias (__new_setrlimit, setrlimit);
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#endif
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