41bdb6e20c
2001-07-06 Paul Eggert <eggert@twinsun.com> * manual/argp.texi: Remove ignored LGPL copyright notice; it's not appropriate for documentation anyway. * manual/libc-texinfo.sh: "Library General Public License" -> "Lesser General Public License". 2001-07-06 Andreas Jaeger <aj@suse.de> * All files under GPL/LGPL version 2: Place under LGPL version 2.1.
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 Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the 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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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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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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