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dde52fca48
* sysdeps/generic/dl-environ.c: Add prototype for unsetenv. * sysdeps/unix/sysv/linux/i386/setrlimit.c: Add prototype for __new_setrlimit. * sysdeps/unix/sysv/linux/i386/oldgetrlimit64.c: Add prototype for __old_getrlimit64. * sysdeps/unix/sysv/linux/i386/getrlimit.c: Add prototype for __new_getrlimit. * sysdeps/unix/sysv/linux/i386/chown.c: Add prototypes for __chown_is_lchown and __real_chown.
88 lines
2.7 KiB
C
88 lines
2.7 KiB
C
/* Copyright (C) 1999, 2000 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/resource.h>
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#include <sysdep.h>
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#include <sys/syscall.h>
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#include <shlib-compat.h>
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#include <bp-checks.h>
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#include "kernel-features.h"
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extern int __syscall_ugetrlimit (unsigned int resource,
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struct rlimit *__unbounded rlimits);
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extern int __syscall_getrlimit (unsigned int resource,
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struct rlimit *__unbounded rlimits);
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extern int __new_getrlimit (enum __rlimit_resource resource,
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struct rlimit *__unbounded 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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int __have_no_new_getrlimit;
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#endif
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int
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__new_getrlimit (enum __rlimit_resource resource, struct rlimit *rlimits)
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{
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#ifdef __ASSUME_NEW_GETRLIMIT_SYSCALL
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return INLINE_SYSCALL (ugetrlimit, 2, resource, CHECK_1 (rlimits));
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#else
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int result;
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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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result = INLINE_SYSCALL (ugetrlimit, 2, resource, CHECK_1 (rlimits));
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/* If the system call is available remember this fact and return. */
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if (result != -1 || errno != ENOSYS)
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{
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__have_no_new_getrlimit = -1;
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return result;
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}
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/* Remember that the system call is not available. */
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__have_no_new_getrlimit = 1;
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}
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# endif
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/* Fall back to the old system call. */
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result = INLINE_SYSCALL (getrlimit, 2, resource, CHECK_1 (rlimits));
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if (result == -1)
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return result;
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/* We might have to correct the limits values. Since the old values
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were signed the infinity value is too small. */
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if (rlimits->rlim_cur == RLIM_INFINITY >> 1)
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rlimits->rlim_cur = RLIM_INFINITY;
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if (rlimits->rlim_max == RLIM_INFINITY >> 1)
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rlimits->rlim_max = RLIM_INFINITY;
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return result;
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#endif
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}
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weak_alias (__new_getrlimit, __getrlimit);
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versioned_symbol (libc, __new_getrlimit, getrlimit, GLIBC_2_2);
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