/* * setrlimit() for uClibc * * Copyright (C) 2000-2006 Erik Andersen <andersen@uclibc.org> * * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. */ #include <sys/syscall.h> #include <sys/resource.h> #include <bits/wordsize.h> #include <stddef.h> // needed for NULL to be defined /* Only wrap setrlimit if the new usetrlimit is not present and setrlimit sucks */ #if defined(__NR_usetrlimit) /* just call usetrlimit() */ # define __NR___syscall_usetrlimit __NR_usetrlimit static __always_inline _syscall2(int, __syscall_usetrlimit, enum __rlimit_resource, resource, const struct rlimit *, rlim) int setrlimit(__rlimit_resource_t resource, const struct rlimit *rlimits) { return __syscall_usetrlimit(resource, rlimits); } #else # if !defined(__UCLIBC_HANDLE_OLDER_RLIMIT__) # if defined(__NR_prlimit64) int setrlimit(__rlimit_resource_t resource, const struct rlimit *rlimits) { return INLINE_SYSCALL (prlimit64, 4, 0, resource, rlimits, NULL); } # else /* We don't need to wrap setrlimit() */ _syscall2(int, setrlimit, __rlimit_resource_t, resource, const struct rlimit *, rlim) # endif # else # define __need_NULL # include <stddef.h> # include <errno.h> # include <sys/param.h> /* we have to handle old style setrlimit() */ # define __NR___syscall_setrlimit __NR_setrlimit static __always_inline _syscall2(int, __syscall_setrlimit, int, resource, const struct rlimit *, rlim) int setrlimit(__rlimit_resource_t resource, const struct rlimit *rlimits) { struct rlimit rlimits_small; if (rlimits == NULL) { __set_errno(EINVAL); return -1; } /* 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); # if defined(__NR_prlimit64) return INLINE_SYSCALL (prlimit64, 4, 0, resource, &rlimits_small, NULL); # else return __syscall_setrlimit(resource, &rlimits_small); # endif } # endif #endif libc_hidden_def(setrlimit) #if __WORDSIZE == 64 strong_alias_untyped(setrlimit, setrlimit64) #endif