1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
|
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* University Copyright- Copyright (c) 1982, 1986, 1988
* The Regents of the University of California
* All Rights Reserved
*
* University Acknowledgment- Portions of this document are derived from
* software developed by the University of California, Berkeley, and its
* contributors.
*/
/*
* Copyright 2007 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/* Portions Copyright 2007 Jeremy Teo */
/* Portions Copyright 2006 Stephen P. Potter */
#include <unistd.h>
#include <stdio.h>
#include <string.h>
#include <locale.h>
#include <libgen.h>
#include <stdlib.h>
#include <errno.h>
#include <netdb.h>
#ifndef TEXT_DOMAIN /* should be defined by cc -D */
#define TEXT_DOMAIN "SYS_TEST" /* use this only if it wasn't */
#endif
static char *progname;
static void
usage(void)
{
(void) fprintf(stderr, gettext("usage: %s [-s] [system_name]\n"),
basename(progname));
exit(1);
}
int
main(int argc, char *argv[])
{
char *nodename = NULL;
char c_hostname[MAXHOSTNAMELEN];
int optlet;
int sflag = 0;
char *optstring = "s";
(void) setlocale(LC_ALL, "");
(void) textdomain(TEXT_DOMAIN);
progname = argv[0];
opterr = 0;
while ((optlet = getopt(argc, argv, optstring)) != -1) {
switch (optlet) {
case 's':
sflag = 1;
break;
case '?':
usage();
break;
}
}
/*
* if called with no arguments, just print out the hostname/nodename
*/
if (argc <= optind) {
if (gethostname(c_hostname, sizeof (c_hostname)) < 0) {
(void) fprintf(stderr,
gettext("%s: unable to obtain hostname\n"),
basename(progname));
exit(1);
} else {
if (sflag)
c_hostname[strcspn(c_hostname, ".")] = '\0';
(void) fprintf(stdout, "%s\n", c_hostname);
}
} else {
/*
* if called with an argument,
* we have to try to set the new hostname/nodename
*/
if (argc > optind + 1)
usage(); /* too many arguments */
nodename = argv[optind];
if (sethostname(nodename, strlen(nodename)) < 0) {
int err = errno;
(void) fprintf(stderr,
gettext("%s: error in setting name: %s\n"),
basename(progname), strerror(err));
exit(1);
}
}
return (0);
}
|