uclibc-ng/libc/sysdeps/linux/common/setrlimit.c

/* vi: set sw=4 ts=4: */
/*
 * 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 "syscalls.h"
#include <unistd.h>
#include <sys/resource.h>

libc_hidden_proto(setrlimit)

#ifndef __NR_ugetrlimit
/* Only wrap setrlimit if the new ugetrlimit is not present */

#define __NR___syscall_setrlimit __NR_setrlimit
#define RMIN(x, y) ((x) < (y) ? (x) : (y))
static 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;

	/* 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 = RMIN((unsigned long int) rlimits->rlim_cur,
								  RLIM_INFINITY >> 1);
	rlimits_small.rlim_max = RMIN((unsigned long int) rlimits->rlim_max,
								  RLIM_INFINITY >> 1);
	return (__syscall_setrlimit(resource, &rlimits_small));
}

#undef RMIN

#else							/* We don't need to wrap setrlimit */
_syscall2(int, setrlimit, __rlimit_resource_t, resource,
		const struct rlimit *, rlim);
#endif
libc_hidden_def(setrlimit)