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 (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21
22 /*
23 * Copyright 2008 Sun Microsystems, Inc. All rights reserved.
24 * Use is subject to license terms.
25 */
26
27 /*
28 * Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T
29 * All Rights Reserved
30 *
31 * Portions of this source code were derived from Berkeley
32 * 4.3 BSD under license from the regents of the University of
33 * California.
34 */
35
36 #include "lint.h"
37
38 #include <sys/time.h>
39 #include <sys/resource.h>
40 #include <sys/types.h>
41 #include <limits.h>
42 /*
43 * getdtablesize is implemented on top of getrlimit's
44 * RLIMIT_NOFILE feature. The current (Soft) limit is returned.
45 */
46 int
getdtablesize(void)47 getdtablesize(void)
48 {
49 struct rlimit rip;
50
51 if (getrlimit(RLIMIT_NOFILE, &rip) == -1)
52 return (-1); /* can't happen */
53 if (rip.rlim_cur == RLIM_INFINITY)
54 return (INT_MAX);
55 return ((int)rip.rlim_cur);
56 }
57