1/*
2 * Copyright (c) 1992, 1993, 1994
3 * The Regents of the University of California. All rights reserved.
4 *
5 * This code is derived from software donated to Berkeley by
6 * Jan-Simon Pendry.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. All advertising materials mentioning features or use of this software
17 * must display the following acknowledgement:
18 * This product includes software developed by the University of
19 * California, Berkeley and its contributors.
20 * 4. Neither the name of the University nor the names of its contributors
21 * may be used to endorse or promote products derived from this software
22 * without specific prior written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * SUCH DAMAGE.
35 */
36
37#ifndef lint
38char copyright[] =
39"@(#) Copyright (c) 1992, 1993, 1994\n\
40 The Regents of the University of California. All rights reserved.\n";
41#endif /* not lint */
42
43#ifndef lint
44static char sccsid[] = "@(#)mount_null.c 8.5 (Berkeley) 3/27/94";
45#endif /* not lint */
46
47#include <sys/param.h>
48#include <sys/mount.h>
49#include <miscfs/nullfs/null.h>
50
51#include <err.h>
52#include <stdio.h>
53#include <unistd.h>
54#include <stdlib.h>
55#include <string.h>
56
57#include "mntopts.h"
58
59struct mntopt mopts[] = {
60 MOPT_STDOPTS,
61 { NULL }
62};
63
64int subdir __P((const char *, const char *));
65void usage __P((void));
66
67int
68main(argc, argv)
69 int argc;
70 char *argv[];
71{
72 struct null_args args;
73 int ch, mntflags;
74 char target[MAXPATHLEN];
| 1/*
2 * Copyright (c) 1992, 1993, 1994
3 * The Regents of the University of California. All rights reserved.
4 *
5 * This code is derived from software donated to Berkeley by
6 * Jan-Simon Pendry.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. All advertising materials mentioning features or use of this software
17 * must display the following acknowledgement:
18 * This product includes software developed by the University of
19 * California, Berkeley and its contributors.
20 * 4. Neither the name of the University nor the names of its contributors
21 * may be used to endorse or promote products derived from this software
22 * without specific prior written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * SUCH DAMAGE.
35 */
36
37#ifndef lint
38char copyright[] =
39"@(#) Copyright (c) 1992, 1993, 1994\n\
40 The Regents of the University of California. All rights reserved.\n";
41#endif /* not lint */
42
43#ifndef lint
44static char sccsid[] = "@(#)mount_null.c 8.5 (Berkeley) 3/27/94";
45#endif /* not lint */
46
47#include <sys/param.h>
48#include <sys/mount.h>
49#include <miscfs/nullfs/null.h>
50
51#include <err.h>
52#include <stdio.h>
53#include <unistd.h>
54#include <stdlib.h>
55#include <string.h>
56
57#include "mntopts.h"
58
59struct mntopt mopts[] = {
60 MOPT_STDOPTS,
61 { NULL }
62};
63
64int subdir __P((const char *, const char *));
65void usage __P((void));
66
67int
68main(argc, argv)
69 int argc;
70 char *argv[];
71{
72 struct null_args args;
73 int ch, mntflags;
74 char target[MAXPATHLEN];
|
| 75 struct vfsconf *vfc;
|
75
76 mntflags = 0;
77 while ((ch = getopt(argc, argv, "o:")) != EOF)
78 switch(ch) {
79 case 'o':
80 getmntopts(optarg, mopts, &mntflags);
81 break;
82 case '?':
83 default:
84 usage();
85 }
86 argc -= optind;
87 argv += optind;
88
89 if (argc != 2)
90 usage();
91
92 if (realpath(argv[0], target) == 0)
93 err(1, "%s", target);
94
95 if (subdir(target, argv[1]) || subdir(argv[1], target))
96 errx(1, "%s (%s) and %s are not distinct paths",
97 argv[0], target, argv[1]);
98
99 args.target = target;
100
| 76
77 mntflags = 0;
78 while ((ch = getopt(argc, argv, "o:")) != EOF)
79 switch(ch) {
80 case 'o':
81 getmntopts(optarg, mopts, &mntflags);
82 break;
83 case '?':
84 default:
85 usage();
86 }
87 argc -= optind;
88 argv += optind;
89
90 if (argc != 2)
91 usage();
92
93 if (realpath(argv[0], target) == 0)
94 err(1, "%s", target);
95
96 if (subdir(target, argv[1]) || subdir(argv[1], target))
97 errx(1, "%s (%s) and %s are not distinct paths",
98 argv[0], target, argv[1]);
99
100 args.target = target;
101
|
101 if (mount(MOUNT_NULL, argv[1], mntflags, &args))
| 102 vfc = getvfsbyname("null");
103 if(!vfc && vfsisloadable("null")) {
104 if(vfsload("null"))
105 err(1, "vfsload(null)");
106 endvfsent(); /* flush cache */
107 vfc = getvfsbyname("null");
108 }
109
110 if (mount(vfc ? vfc->vfc_index : MOUNT_NULL, argv[1], mntflags, &args))
|
102 err(1, NULL);
103 exit(0);
104}
105
106int
107subdir(p, dir)
108 const char *p;
109 const char *dir;
110{
111 int l;
112
113 l = strlen(dir);
114 if (l <= 1)
115 return (1);
116
117 if ((strncmp(p, dir, l) == 0) && (p[l] == '/' || p[l] == '\0'))
118 return (1);
119
120 return (0);
121}
122
123void
124usage()
125{
126 (void)fprintf(stderr,
127 "usage: mount_null [-o options] target_fs mount_point\n");
128 exit(1);
129}
| 111 err(1, NULL);
112 exit(0);
113}
114
115int
116subdir(p, dir)
117 const char *p;
118 const char *dir;
119{
120 int l;
121
122 l = strlen(dir);
123 if (l <= 1)
124 return (1);
125
126 if ((strncmp(p, dir, l) == 0) && (p[l] == '/' || p[l] == '\0'))
127 return (1);
128
129 return (0);
130}
131
132void
133usage()
134{
135 (void)fprintf(stderr,
136 "usage: mount_null [-o options] target_fs mount_point\n");
137 exit(1);
138}
|