lib/libc/gen/ulimit.c

   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 }