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 2004 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 * 26 * Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T 27 * All Rights Reserved 28 * 29 * Portions of this source code were derived from Berkeley 30 * 4.3 BSD under license from the regents of the University of 31 * California. 32 */ 33 34 #pragma ident "%Z%%M% %I% %E% SMI" 35 36 #include "synonyms.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 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