1 /*
2 * Copyright (c) 1980 Regents of the University of California.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 */
33
34 #ifndef lint
35 char copyright[] =
36 "@(#) Copyright (c) 1980 Regents of the University of California.\n\
37 All rights reserved.\n";
38 #endif /* not lint */
39
40 #ifndef lint
41 static char sccsid[] = "@(#)swapon.c 5.5 (Berkeley) 2/27/91";
42 #endif /* not lint */
43
44 #include <fstab.h>
45 #include <errno.h>
46 #include <stdio.h>
47
main(argc,argv)48 main(argc, argv)
49 int argc;
50 char **argv;
51 {
52 extern char *optarg;
53 extern int optind;
54 register struct fstab *fsp;
55 register int stat;
56 int ch, doall;
57
58 doall = 0;
59 while ((ch = getopt(argc, argv, "a")) != EOF)
60 switch((char)ch) {
61 case 'a':
62 doall = 1;
63 break;
64 case '?':
65 default:
66 usage();
67 }
68 argv += optind;
69
70 stat = 0;
71 if (doall)
72 while (fsp = getfsent()) {
73 if (strcmp(fsp->fs_type, FSTAB_SW))
74 continue;
75 if (add(fsp->fs_spec, 1))
76 stat = 1;
77 else
78 printf("swapon: adding %s as swap device\n",
79 fsp->fs_spec);
80 }
81 else if (!*argv)
82 usage();
83 for (; *argv; ++argv)
84 stat |= add(*argv, 0);
85 exit(stat);
86 }
87
add(name,ignoreebusy)88 add(name, ignoreebusy)
89 char *name;
90 int ignoreebusy;
91 {
92 extern int errno;
93
94 if (swapon(name) == -1) {
95 switch (errno) {
96 case EINVAL:
97 fprintf(stderr, "swapon: %s: device not configured\n",
98 name);
99 break;
100 case EBUSY:
101 if (!ignoreebusy)
102 fprintf(stderr,
103 "swapon: %s: device already in use\n",
104 name);
105 break;
106 default:
107 fprintf(stderr, "swapon: %s: ", name);
108 perror((char *)NULL);
109 break;
110 }
111 return(1);
112 }
113 return(0);
114 }
115
usage()116 usage()
117 {
118 fprintf(stderr, "usage: swapon [-a] [special_file ...]\n");
119 exit(1);
120 }
121