usr/src/lib/libbc/libc/compat/common/ulimit.c

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License, Version 1.0 only
   6  * (the "License").  You may not use this file except in compliance
   7  * with the License.
   8  *
   9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
  10  * or http://www.opensolaris.org/os/licensing.
  11  * See the License for the specific language governing permissions
  12  * and limitations under the License.
  13  *
  14  * When distributing Covered Code, include this CDDL HEADER in each
  15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  16  * If applicable, add the following below this CDDL HEADER, with the
  17  * fields enclosed by brackets "[]" replaced with your own identifying
  18  * information: Portions Copyright [yyyy] [name of copyright owner]
  19  *
  20  * CDDL HEADER END
  21  */
  22 /*
  23  * Copyright 1987 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26
  27 #pragma ident   "%Z%%M% %I%     %E% SMI"
  28
  29 #include <sys/time.h>
  30 #include <sys/resource.h>
  31 #include <errno.h>
  32
  33 long
  34 ulimit(int cmd, long newlimit)
  35 {
  36         struct rlimit rlimit;
  37
  38         switch (cmd) {
  39
  40         case 1:
  41                 if (getrlimit(RLIMIT_FSIZE, &rlimit) < 0)
  42                         return(-1);
  43                 return (rlimit.rlim_cur / 512);
  44
  45         case 2:
  46                 rlimit.rlim_cur = rlimit.rlim_max = newlimit * 512;
  47                 return (setrlimit(RLIMIT_FSIZE, &rlimit));
  48
  49         case 3:
  50                 if (getrlimit(RLIMIT_DATA, &rlimit) < 0)
  51                         return(-1);
  52                 return (rlimit.rlim_cur);
  53
  54         case 4:
  55                 return (getdtablesize());
  56
  57         default:
  58                 errno = EINVAL;
  59                 return (-1);
  60         }
  61 }