diff options
Diffstat (limited to 'sysdeps')
-rw-r--r-- | sysdeps/unix/sysv/linux/setrlimit.c | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/setrlimit.c b/sysdeps/unix/sysv/linux/setrlimit.c new file mode 100644 index 0000000000..674a2cf8c3 --- /dev/null +++ b/sysdeps/unix/sysv/linux/setrlimit.c @@ -0,0 +1,72 @@ +/* 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/param.h> +#include <sys/resource.h> + +#include <sysdep.h> +#include <sys/syscall.h> + +#include "../kernel-features.h" + + +/* 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 + +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); + +# ifndef __ASSUME_NEW_GETRLIMIT_SYSCALL + /* If the system call is available return. */ + if (result != -1 || errno != ENOSYS) +# endif + return result; + +# ifndef __ASSUME_NEW_GETRLIMIT_SYSCALL + /* Remember that the system call is not available. */ + no_new_getrlimit = 1; +# endif + } +#endif + +#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); + + /* Fall back on the old system call. */ + return INLINE_SYSCALL (setrlimit, 2, resource, rlimits); +#endif +} +weak_alias (__setrlimit, setrlimit) |