158f0484fSRodney W. Grimes /* 258f0484fSRodney W. Grimes * Copyright (c) 1989, 1993 358f0484fSRodney W. Grimes * The Regents of the University of California. All rights reserved. 458f0484fSRodney W. Grimes * 558f0484fSRodney W. Grimes * Redistribution and use in source and binary forms, with or without 658f0484fSRodney W. Grimes * modification, are permitted provided that the following conditions 758f0484fSRodney W. Grimes * are met: 858f0484fSRodney W. Grimes * 1. Redistributions of source code must retain the above copyright 958f0484fSRodney W. Grimes * notice, this list of conditions and the following disclaimer. 1058f0484fSRodney W. Grimes * 2. Redistributions in binary form must reproduce the above copyright 1158f0484fSRodney W. Grimes * notice, this list of conditions and the following disclaimer in the 1258f0484fSRodney W. Grimes * documentation and/or other materials provided with the distribution. 1358f0484fSRodney W. Grimes * 3. All advertising materials mentioning features or use of this software 1458f0484fSRodney W. Grimes * must display the following acknowledgement: 1558f0484fSRodney W. Grimes * This product includes software developed by the University of 1658f0484fSRodney W. Grimes * California, Berkeley and its contributors. 1758f0484fSRodney W. Grimes * 4. Neither the name of the University nor the names of its contributors 1858f0484fSRodney W. Grimes * may be used to endorse or promote products derived from this software 1958f0484fSRodney W. Grimes * without specific prior written permission. 2058f0484fSRodney W. Grimes * 2158f0484fSRodney W. Grimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 2258f0484fSRodney W. Grimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 2358f0484fSRodney W. Grimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 2458f0484fSRodney W. Grimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 2558f0484fSRodney W. Grimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 2658f0484fSRodney W. Grimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2758f0484fSRodney W. Grimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2858f0484fSRodney W. Grimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2958f0484fSRodney W. Grimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 3058f0484fSRodney W. Grimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 3158f0484fSRodney W. Grimes * SUCH DAMAGE. 3258f0484fSRodney W. Grimes */ 3358f0484fSRodney W. Grimes 3458f0484fSRodney W. Grimes #if defined(LIBC_SCCS) && !defined(lint) 3558f0484fSRodney W. Grimes static char sccsid[] = "@(#)gethostname.c 8.1 (Berkeley) 6/4/93"; 3658f0484fSRodney W. Grimes #endif /* LIBC_SCCS and not lint */ 37333fc21eSDavid E. O'Brien #include <sys/cdefs.h> 38333fc21eSDavid E. O'Brien __FBSDID("$FreeBSD$"); 3958f0484fSRodney W. Grimes 4058f0484fSRodney W. Grimes #include <sys/param.h> 4158f0484fSRodney W. Grimes #include <sys/sysctl.h> 4258f0484fSRodney W. Grimes 43effcb5ecSGarrett Wollman #include <errno.h> 4461310091SStefan Farfeleder #include <unistd.h> 45effcb5ecSGarrett Wollman 468af0a47fSJordan K. Hubbard int 4758f0484fSRodney W. Grimes gethostname(name, namelen) 4858f0484fSRodney W. Grimes char *name; 49effcb5ecSGarrett Wollman size_t namelen; 5058f0484fSRodney W. Grimes { 5158f0484fSRodney W. Grimes int mib[2]; 5258f0484fSRodney W. Grimes 5389a26fd1SGarrett Wollman /* Kluge to avoid ABI breakage. */ 5489a26fd1SGarrett Wollman namelen = (int)namelen; 5589a26fd1SGarrett Wollman 5658f0484fSRodney W. Grimes mib[0] = CTL_KERN; 5758f0484fSRodney W. Grimes mib[1] = KERN_HOSTNAME; 58effcb5ecSGarrett Wollman if (sysctl(mib, 2, name, &namelen, NULL, 0) == -1) { 59effcb5ecSGarrett Wollman if (errno == ENOMEM) 60effcb5ecSGarrett Wollman errno = ENAMETOOLONG; 6158f0484fSRodney W. Grimes return (-1); 62effcb5ecSGarrett Wollman } 6358f0484fSRodney W. Grimes return (0); 6458f0484fSRodney W. Grimes } 65