diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/i386/getrlimit.c')
-rw-r--r-- | sysdeps/unix/sysv/linux/i386/getrlimit.c | 84 |
1 files changed, 84 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/i386/getrlimit.c b/sysdeps/unix/sysv/linux/i386/getrlimit.c new file mode 100644 index 0000000..14a879c --- /dev/null +++ b/sysdeps/unix/sysv/linux/i386/getrlimit.c @@ -0,0 +1,84 @@ +/* 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. */ + +#include <errno.h> +#include <sys/resource.h> + +#include <sysdep.h> +#include <sys/syscall.h> + +#include "kernel-features.h" + +extern int __syscall_ugetrlimit (unsigned int resource, + struct rlimit *rlimits); +extern int __syscall_getrlimit (unsigned int resource, struct rlimit *rlimits); + +/* Linux 2.3.25 introduced a new system call since the types used for + the limits are now unsigned. */ +#if defined __NR_ugetrlimit && !defined __ASSUME_NEW_GETRLIMIT_SYSCALL +int __have_no_new_getrlimit; +#endif + +int +__new_getrlimit (enum __rlimit_resource resource, struct rlimit *rlimits) +{ +#ifdef __ASSUME_NEW_GETRLIMIT_SYSCALL + return INLINE_SYSCALL (ugetrlimit, 2, resource, rlimits); +#else + int result; + +# ifdef __NR_ugetrlimit + if (__have_no_new_getrlimit <= 0) + { + result = INLINE_SYSCALL (ugetrlimit, 2, resource, rlimits); + + /* If the system call is available remember this fact and return. */ + if (result != -1 || errno != ENOSYS) + { + __have_no_new_getrlimit = -1; + return result; + } + + /* Remember that the system call is not available. */ + __have_no_new_getrlimit = 1; + } +# endif + + /* Fall back to the old system call. */ + result = INLINE_SYSCALL (getrlimit, 2, resource, rlimits); + + if (result == -1) + return result; + + /* We might have to correct the limits values. Since the old values + were signed the infinity value is too small. */ + if (rlimits->rlim_cur == RLIM_INFINITY >> 1) + rlimits->rlim_cur = RLIM_INFINITY; + if (rlimits->rlim_max == RLIM_INFINITY >> 1) + rlimits->rlim_max = RLIM_INFINITY; + + return result; +#endif +} + +weak_alias (__new_getrlimit, __getrlimit); +#if defined PIC && DO_VERSIONING +default_symbol_version (__new_getrlimit, getrlimit, GLIBC_2.1.3); +#else +weak_alias (__new_getrlimit, getrlimit); +#endif |