2005-01-10 08:39:26 +00:00
|
|
|
/*-
|
1994-05-26 06:18:55 +00:00
|
|
|
* Copyright (c) 1988, 1993
|
|
|
|
* The Regents of the University of California. 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.
|
|
|
|
* 4. Neither the name of the University 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 REGENTS 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 REGENTS 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.
|
|
|
|
*/
|
|
|
|
|
2003-05-01 16:58:57 +00:00
|
|
|
#if 0
|
1994-05-26 06:18:55 +00:00
|
|
|
#ifndef lint
|
1996-12-14 05:59:58 +00:00
|
|
|
static char const copyright[] =
|
1994-05-26 06:18:55 +00:00
|
|
|
"@(#) Copyright (c) 1988, 1993\n\
|
|
|
|
The Regents of the University of California. All rights reserved.\n";
|
|
|
|
#endif /* not lint */
|
|
|
|
|
|
|
|
#ifndef lint
|
1998-05-13 07:47:35 +00:00
|
|
|
static char sccsid[] = "@(#)hostname.c 8.1 (Berkeley) 5/31/93";
|
1994-05-26 06:18:55 +00:00
|
|
|
#endif /* not lint */
|
2003-05-01 16:58:57 +00:00
|
|
|
#endif
|
2002-06-30 05:13:54 +00:00
|
|
|
#include <sys/cdefs.h>
|
|
|
|
__FBSDID("$FreeBSD$");
|
1994-05-26 06:18:55 +00:00
|
|
|
|
|
|
|
#include <sys/param.h>
|
|
|
|
|
|
|
|
#include <err.h>
|
|
|
|
#include <stdio.h>
|
|
|
|
#include <stdlib.h>
|
|
|
|
#include <string.h>
|
|
|
|
#include <unistd.h>
|
|
|
|
|
2013-04-28 22:52:43 +00:00
|
|
|
static void usage(void) __dead2;
|
1996-12-14 05:59:58 +00:00
|
|
|
|
1994-05-26 06:18:55 +00:00
|
|
|
int
|
2002-02-02 06:48:10 +00:00
|
|
|
main(int argc, char *argv[])
|
1994-05-26 06:18:55 +00:00
|
|
|
{
|
2016-11-08 11:36:33 +00:00
|
|
|
int ch, sflag, dflag;
|
1994-05-26 06:18:55 +00:00
|
|
|
char *p, hostname[MAXHOSTNAMELEN];
|
|
|
|
|
|
|
|
sflag = 0;
|
2016-11-08 11:36:33 +00:00
|
|
|
dflag = 0;
|
|
|
|
while ((ch = getopt(argc, argv, "fsd")) != -1)
|
1994-05-26 06:18:55 +00:00
|
|
|
switch (ch) {
|
2006-12-08 07:19:51 +00:00
|
|
|
case 'f':
|
2006-12-08 07:47:08 +00:00
|
|
|
/*
|
|
|
|
* On Linux, "hostname -f" prints FQDN.
|
|
|
|
* BSD "hostname" always prints FQDN by
|
|
|
|
* default, so we accept but ignore -f.
|
|
|
|
*/
|
2006-12-08 07:19:51 +00:00
|
|
|
break;
|
1994-05-26 06:18:55 +00:00
|
|
|
case 's':
|
|
|
|
sflag = 1;
|
|
|
|
break;
|
2016-11-08 11:36:33 +00:00
|
|
|
case 'd':
|
|
|
|
dflag = 1;
|
|
|
|
break;
|
1994-05-26 06:18:55 +00:00
|
|
|
case '?':
|
|
|
|
default:
|
1996-12-14 05:59:58 +00:00
|
|
|
usage();
|
1994-05-26 06:18:55 +00:00
|
|
|
}
|
|
|
|
argc -= optind;
|
|
|
|
argv += optind;
|
|
|
|
|
2016-11-08 11:36:33 +00:00
|
|
|
if (argc > 1 || (sflag && dflag))
|
1996-12-14 05:59:58 +00:00
|
|
|
usage();
|
|
|
|
|
1994-05-26 06:18:55 +00:00
|
|
|
if (*argv) {
|
2001-05-20 04:54:15 +00:00
|
|
|
if (sethostname(*argv, (int)strlen(*argv)))
|
1994-05-26 06:18:55 +00:00
|
|
|
err(1, "sethostname");
|
|
|
|
} else {
|
2001-05-20 04:54:15 +00:00
|
|
|
if (gethostname(hostname, (int)sizeof(hostname)))
|
1994-05-26 06:18:55 +00:00
|
|
|
err(1, "gethostname");
|
2002-02-22 21:11:03 +00:00
|
|
|
if (sflag) {
|
|
|
|
p = strchr(hostname, '.');
|
|
|
|
if (p != NULL)
|
|
|
|
*p = '\0';
|
2016-11-08 11:36:33 +00:00
|
|
|
} else if (dflag) {
|
|
|
|
p = strchr(hostname, '.');
|
|
|
|
if (p != NULL)
|
|
|
|
strcpy(hostname, ++p);
|
2002-02-22 21:11:03 +00:00
|
|
|
}
|
1994-05-26 06:18:55 +00:00
|
|
|
(void)printf("%s\n", hostname);
|
|
|
|
}
|
|
|
|
exit(0);
|
|
|
|
}
|
1996-12-14 05:59:58 +00:00
|
|
|
|
2009-06-23 23:30:56 +00:00
|
|
|
static void
|
2002-02-02 06:48:10 +00:00
|
|
|
usage(void)
|
1996-12-14 05:59:58 +00:00
|
|
|
{
|
|
|
|
|
2016-11-09 04:42:09 +00:00
|
|
|
(void)fprintf(stderr, "usage: hostname [-f] [-s | -d] [name-of-host]\n");
|
1996-12-14 05:59:58 +00:00
|
|
|
exit(1);
|
|
|
|
}
|