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/* * 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); } libc_hidden_def(setrlimit) #elif defined(__NR_prlimit64) /* Use prlimit64 if present, the prlimit64 syscall is free from a back compatibility stuff for setrlimit */ # if __WORDSIZE == 32 && !defined(__USE_FILE_OFFSET64) /* If struct rlimit has 64-bit fields (if __WORDSIZE == 64 or __USE_FILE_OFFSET64 is defined), then use setrlimit as an alias to setrlimit64, see setrlimit64.c */ int setrlimit(__rlimit_resource_t resource, const struct rlimit *rlimits) { struct rlimit64 rlimits64; if (rlimits->rlim_cur == RLIM_INFINITY) rlimits64.rlim_cur = RLIM64_INFINITY; else rlimits64.rlim_cur = rlimits->rlim_cur; if (rlimits->rlim_max == RLIM_INFINITY) rlimits64.rlim_max = RLIM64_INFINITY; else rlimits64.rlim_max = rlimits->rlim_max; return INLINE_SYSCALL (prlimit64, 4, 0, resource, &rlimits64, NULL); } libc_hidden_def(setrlimit) # endif #else # if !defined(__UCLIBC_HANDLE_OLDER_RLIMIT__) /* We don't need to wrap setrlimit() */ _syscall2(int, setrlimit, __rlimit_resource_t, resource, const struct rlimit *, rlim) # 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); return __syscall_setrlimit(resource, &rlimits_small); } # endif libc_hidden_def(setrlimit) #endif |