/* 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 #include #include #include #include #include "kernel-features.h" extern int __syscall_setrlimit (unsigned int resource, const struct rlimit *rlimits); extern int __syscall_ugetrlimit (unsigned int resource, const 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 extern int __have_no_new_getrlimit; /* from getrlimit.c */ #endif int __new_setrlimit (enum __rlimit_resource resource, const struct rlimit *rlimits) { #ifdef __ASSUME_NEW_GETRLIMIT_SYSCALL return INLINE_SYSCALL (setrlimit, 2, resource, rlimits); #else struct rlimit rlimits_small; # ifdef __NR_ugetrlimit if (__have_no_new_getrlimit == 0) { /* Check if the new ugetrlimit syscall exists. We must do this first because older kernels don't reject negative rlimit values in setrlimit. */ result = INLINE_SYSCALL (ugetrlimit, 2, resource, &rlimits_small); if (result != -1 || errno != ENOSYS) /* The syscall exists. */ __have_no_new_getrlimit = -1; else /* The syscall does not exist. */ __have_no_new_getrlimit = 1; } if (__have_no_new_getrlimit < 0) return INLINE_SYSCALL (setrlimit, 2, resource, rlimits); # endif /* We might have to correct the limits values. Since the old values were signed the new values might be too large. */ rlimits_small.rlim_cur = MIN ((unsigned long int) rlimits->rlim_cur, RLIM_INFINITY >> 1); rlimits_small.rlim_max = MIN ((unsigned long int) rlimits->rlim_max, RLIM_INFINITY >> 1); /* Use the adjusted values. */ return INLINE_SYSCALL (setrlimit, 2, resource, &rlimits_small); #endif } weak_alias (__new_setrlimit, __setrlimit); #if defined PIC && DO_VERSIONING default_symbol_version (__new_setrlimit, setrlimit, GLIBC_2.1.3); #else weak_alias (__new_setrlimit, setrlimit); #endif