1 /* $NetBSD: mount_procfs.c,v 1.25 2020/07/26 08:20:23 mlelstv Exp $ */
2
3 /*
4 * Copyright (c) 1992, 1993, 1994
5 * The Regents of the University of California. All rights reserved.
6 *
7 * This code is derived from software contributed to Berkeley by
8 * Jan-Simon Pendry.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 3. Neither the name of the University nor the names of its contributors
19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 */
34
35 /*
36 * Copyright (c) 1990, 1992, 1993 Jan-Simon Pendry
37 *
38 * This code is derived from software contributed to Berkeley by
39 * Jan-Simon Pendry.
40 *
41 * Redistribution and use in source and binary forms, with or without
42 * modification, are permitted provided that the following conditions
43 * are met:
44 * 1. Redistributions of source code must retain the above copyright
45 * notice, this list of conditions and the following disclaimer.
46 * 2. Redistributions in binary form must reproduce the above copyright
47 * notice, this list of conditions and the following disclaimer in the
48 * documentation and/or other materials provided with the distribution.
49 * 3. All advertising materials mentioning features or use of this software
50 * must display the following acknowledgement:
51 * This product includes software developed by the University of
52 * California, Berkeley and its contributors.
53 * 4. Neither the name of the University nor the names of its contributors
54 * may be used to endorse or promote products derived from this software
55 * without specific prior written permission.
56 *
57 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
58 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
59 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
60 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
61 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
62 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
63 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
64 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
65 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
66 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
67 * SUCH DAMAGE.
68 */
69
70 #include <sys/cdefs.h>
71 #ifndef lint
72 __COPYRIGHT("@(#) Copyright (c) 1992, 1993, 1994\
73 The Regents of the University of California. All rights reserved.");
74 #endif /* not lint */
75
76 #ifndef lint
77 #if 0
78 static char sccsid[] = "@(#)mount_procfs.c 8.4 (Berkeley) 4/26/95";
79 #else
80 __RCSID("$NetBSD: mount_procfs.c,v 1.25 2020/07/26 08:20:23 mlelstv Exp $");
81 #endif
82 #endif /* not lint */
83
84 #include <sys/param.h>
85 #include <sys/mount.h>
86
87 #include <err.h>
88 #include <unistd.h>
89 #include <stdio.h>
90 #include <stdlib.h>
91 #include <string.h>
92 #include <util.h>
93
94 #include <miscfs/procfs/procfs.h>
95
96 #include <mntopts.h>
97
98 #include "mountprog.h"
99
100 static const struct mntopt mopts[] = {
101 MOPT_STDOPTS,
102 MOPT_GETARGS,
103 { "linux", 0, PROCFSMNT_LINUXCOMPAT, 1},
104 MOPT_NULL,
105 };
106
107 int mount_procfs(int argc, char **argv);
108 __dead static void usage(void);
109
110 #ifndef MOUNT_NOMAIN
111 int
main(int argc,char ** argv)112 main(int argc, char **argv)
113 {
114 return mount_procfs(argc, argv);
115 }
116 #endif
117
118 int
mount_procfs(int argc,char * argv[])119 mount_procfs(int argc, char *argv[])
120 {
121 int ch, mntflags, altflags;
122 struct procfs_args args;
123 char canon_dir[MAXPATHLEN];
124 mntoptparse_t mp;
125
126 mntflags = 0;
127 altflags = PROCFSMNT_LINUXCOMPAT;
128 while ((ch = getopt(argc, argv, "o:")) != -1)
129 switch (ch) {
130 case 'o':
131 mp = getmntopts(optarg, mopts, &mntflags, &altflags);
132 if (mp == NULL)
133 err(1, "getmntopts");
134 freemntopts(mp);
135 break;
136 case '?':
137 default:
138 usage();
139 }
140 argc -= optind;
141 argv += optind;
142
143 if (argc != 2)
144 usage();
145
146 pathadj(argv[1], canon_dir);
147
148 args.version = PROCFS_ARGSVERSION;
149 args.flags = altflags;
150
151 if (mount(MOUNT_PROCFS, canon_dir, mntflags, &args, sizeof args) == -1)
152 err(1, "procfs on %s", canon_dir);
153 if (mntflags & MNT_GETARGS) {
154 char buf[1024];
155 (void)snprintb(buf, sizeof(buf), PROCFSMNT_BITS, args.flags);
156 printf("version=%d, flags=%s\n", args.version, buf);
157 }
158 exit(0);
159 }
160
161 static void
usage(void)162 usage(void)
163 {
164 (void)fprintf(stderr,
165 "usage: mount_procfs [-o options] /proc mount_point\n");
166 exit(1);
167 }
168