155682Smarkm/* 2233294Sstas * Copyright (c) 1995-2001 Kungliga Tekniska H��gskolan 355682Smarkm * (Royal Institute of Technology, Stockholm, Sweden). 455682Smarkm * All rights reserved. 5233294Sstas * 655682Smarkm * Redistribution and use in source and binary forms, with or without 755682Smarkm * modification, are permitted provided that the following conditions 855682Smarkm * are met: 9233294Sstas * 1055682Smarkm * 1. Redistributions of source code must retain the above copyright 1155682Smarkm * notice, this list of conditions and the following disclaimer. 12233294Sstas * 1355682Smarkm * 2. Redistributions in binary form must reproduce the above copyright 1455682Smarkm * notice, this list of conditions and the following disclaimer in the 1555682Smarkm * documentation and/or other materials provided with the distribution. 16233294Sstas * 1755682Smarkm * 3. Neither the name of the Institute nor the names of its contributors 1855682Smarkm * may be used to endorse or promote products derived from this software 1955682Smarkm * without specific prior written permission. 20233294Sstas * 2155682Smarkm * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND 2255682Smarkm * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 2355682Smarkm * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 2455682Smarkm * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE 2555682Smarkm * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 2655682Smarkm * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2755682Smarkm * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2855682Smarkm * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2955682Smarkm * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 3055682Smarkm * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 3155682Smarkm * SUCH DAMAGE. 3255682Smarkm */ 3355682Smarkm 3455682Smarkm#include <config.h> 3555682Smarkm 3655682Smarkm#include "roken.h" 3755682Smarkm 3855682Smarkm#ifdef HAVE_SYS_TYPES_H 3955682Smarkm#include <sys/types.h> 4055682Smarkm#endif 4155682Smarkm#ifdef TIME_WITH_SYS_TIME 4255682Smarkm#include <sys/time.h> 4355682Smarkm#include <time.h> 4455682Smarkm#elif defined(HAVE_SYS_TIME_H) 4555682Smarkm#include <sys/time.h> 4655682Smarkm#else 4755682Smarkm#include <time.h> 4855682Smarkm#endif 4955682Smarkm#ifdef HAVE_SYS_PARAM_H 5055682Smarkm#include <sys/param.h> 5155682Smarkm#endif 5255682Smarkm#ifdef HAVE_UNISTD_H 5355682Smarkm#include <unistd.h> 5455682Smarkm#endif 5555682Smarkm 5655682Smarkm#ifdef HAVE_SYS_RESOURCE_H 5755682Smarkm#include <sys/resource.h> 5855682Smarkm#endif 5955682Smarkm 6055682Smarkm#ifdef HAVE_SYS_SYSCTL_H 6155682Smarkm#include <sys/sysctl.h> 6255682Smarkm#endif 6355682Smarkm 64233294SstasROKEN_LIB_FUNCTION int ROKEN_LIB_CALL 65178825Sdfrgetdtablesize(void) 6655682Smarkm{ 6755682Smarkm int files = -1; 6855682Smarkm#if defined(HAVE_SYSCONF) && defined(_SC_OPEN_MAX) 6955682Smarkm files = sysconf(_SC_OPEN_MAX); 7055682Smarkm#else /* !defined(HAVE_SYSCONF) */ 7155682Smarkm#if defined(HAVE_GETRLIMIT) && defined(RLIMIT_NOFILE) 7255682Smarkm struct rlimit res; 7355682Smarkm if (getrlimit(RLIMIT_NOFILE, &res) == 0) 7455682Smarkm files = res.rlim_cur; 7555682Smarkm#else /* !definded(HAVE_GETRLIMIT) */ 7655682Smarkm#if defined(HAVE_SYSCTL) && defined(CTL_KERN) && defined(KERN_MAXFILES) 7755682Smarkm int mib[2]; 7855682Smarkm size_t len; 79233294Sstas 8055682Smarkm mib[0] = CTL_KERN; 8155682Smarkm mib[1] = KERN_MAXFILES; 8255682Smarkm len = sizeof(files); 8390926Snectar sysctl(&mib, 2, &files, sizeof(files), NULL, 0); 8455682Smarkm#endif /* defined(HAVE_SYSCTL) */ 8555682Smarkm#endif /* !definded(HAVE_GETRLIMIT) */ 8655682Smarkm#endif /* !defined(HAVE_SYSCONF) */ 8755682Smarkm 8855682Smarkm#ifdef OPEN_MAX 8955682Smarkm if (files < 0) 9055682Smarkm files = OPEN_MAX; 9155682Smarkm#endif 9255682Smarkm 9355682Smarkm#ifdef NOFILE 9455682Smarkm if (files < 0) 9555682Smarkm files = NOFILE; 96233294Sstas#endif 97233294Sstas 9855682Smarkm return files; 9955682Smarkm} 100