diff options
Diffstat (limited to 'crypto/kerberosIV/lib/roken/getdtablesize.c')
-rw-r--r-- | crypto/kerberosIV/lib/roken/getdtablesize.c | 102 |
1 files changed, 102 insertions, 0 deletions
diff --git a/crypto/kerberosIV/lib/roken/getdtablesize.c b/crypto/kerberosIV/lib/roken/getdtablesize.c new file mode 100644 index 0000000..afd47d2b --- /dev/null +++ b/crypto/kerberosIV/lib/roken/getdtablesize.c @@ -0,0 +1,102 @@ +/* + * Copyright (c) 1995, 1996, 1997 Kungliga Tekniska Högskolan + * (Royal Institute of Technology, Stockholm, Sweden). + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the Kungliga Tekniska + * Högskolan and its contributors. + * + * 4. Neither the name of the Institute nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#ifdef HAVE_CONFIG_H +#include <config.h> +RCSID("$Id: getdtablesize.c,v 1.8 1997/04/20 05:51:06 assar Exp $"); +#endif + +#include "roken.h" + +#include <sys/types.h> +#ifdef TIME_WITH_SYS_TIME +#include <sys/time.h> +#include <time.h> +#elif defined(HAVE_SYS_TIME_H) +#include <sys/time.h> +#else +#include <time.h> +#endif +#ifdef HAVE_SYS_PARAM_H +#include <sys/param.h> +#endif +#include <unistd.h> + +#ifdef HAVE_SYS_RESOURCE_H +#include <sys/resource.h> +#endif + +#ifdef HAVE_SYS_SYSCTL_H +#include <sys/sysctl.h> +#endif + +int getdtablesize(void) +{ + int files = -1; +#if defined(HAVE_SYSCONF) && defined(_SC_OPEN_MAX) + files = sysconf(_SC_OPEN_MAX); +#else /* !defined(HAVE_SYSCONF) */ +#if defined(HAVE_GETRLIMIT) && defined(RLIMIT_NOFILE) + struct rlimit res; + if (getrlimit(RLIMIT_NOFILE, &res) == 0) + files = res.rlim_cur; +#else /* !definded(HAVE_GETRLIMIT) */ +#if defined(HAVE_SYSCTL) && defined(CTL_KERN) && defined(KERN_MAXFILES) + int mib[2]; + size_t len; + + mib[0] = CTL_KERN; + mib[1] = KERN_MAXFILES; + len = sizeof(files); + sysctl(&mib, 2, &files, sizeof(nfil), NULL, 0); +#endif /* defined(HAVE_SYSCTL) */ +#endif /* !definded(HAVE_GETRLIMIT) */ +#endif /* !defined(HAVE_SYSCONF) */ + +#ifdef OPEN_MAX + if (files < 0) + files = OPEN_MAX; +#endif + +#ifdef NOFILE + if (files < 0) + files = NOFILE; +#endif + + return files; +} |