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      1 /*	$NetBSD: ulimit.c,v 1.3 2008/04/28 20:22:59 martin Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1999 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Klaus Klein.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  * POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 #include <sys/cdefs.h>
     33 #if defined(LIBC_SCCS) && !defined(lint)
     34 __RCSID("$NetBSD: ulimit.c,v 1.3 2008/04/28 20:22:59 martin Exp $");
     35 #endif /* LIBC_SCCS and not lint */
     36 
     37 #include <sys/resource.h>
     38 #include <errno.h>
     39 #include <stdarg.h>
     40 #include <ulimit.h>
     41 
     42 long int
     43 ulimit(int cmd, ...)
     44 {
     45 	va_list ap;
     46 	struct rlimit rlimit;
     47 	long int new_limit, result;
     48 
     49 	va_start(ap, cmd);
     50 
     51 	result = -1L;
     52 	switch (cmd) {
     53 	case UL_GETFSIZE:
     54 		if (getrlimit(RLIMIT_FSIZE, &rlimit) == 0)
     55 			result = (long int)(rlimit.rlim_cur / 512);
     56 		break;
     57 	case UL_SETFSIZE:
     58 		new_limit = va_arg(ap, long int);
     59 		rlimit.rlim_cur = rlimit.rlim_max = (rlim_t)new_limit * 512;
     60 		if (setrlimit(RLIMIT_FSIZE, &rlimit) == 0)
     61 			result = new_limit;
     62 		break;
     63 	default:
     64 		errno = EINVAL;
     65 	}
     66 
     67 	va_end(ap);
     68 
     69 	return (result);
     70 }
     71