1 /* $NetBSD: mount_chfs.c,v 1.5 2021/07/16 12:09:36 andvar Exp $ */
2
3 /*-
4 * Copyright (c) 2010 Department of Software Engineering,
5 * University of Szeged, Hungary
6 * All rights reserved.
7 *
8 * This code is derived from software contributed to The NetBSD Foundation
9 * by the Department of Software Engineering, University of Szeged, Hungary
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
21 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
22 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
23 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
24 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
25 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
26 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
27 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
28 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 */
32
33 #include <sys/cdefs.h>
34 #ifndef lint
35 #endif /* not lint */
36
37 #include <sys/param.h>
38 #include <sys/mount.h>
39 #include <sys/stat.h>
40 #include <ufs/ufs/ufsmount.h>
41
42 #include <ctype.h>
43 #include <err.h>
44 #include <errno.h>
45 #include <grp.h>
46 #include <mntopts.h>
47 #include <pwd.h>
48 #include <stdio.h>
49 #include <stdlib.h>
50 #include <string.h>
51 #include <unistd.h>
52
53 #include "mountprog.h"
54 #include "mount_chfs.h"
55
56 static const struct mntopt mopts[] = {
57 MOPT_STDOPTS,
58 MOPT_GETARGS,
59 MOPT_NULL,
60 };
61
62 /* --------------------------------------------------------------------- */
63
64 static void usage(void) __dead;
65
66 /* --------------------------------------------------------------------- */
67
68 void
mount_chfs_parseargs(int argc,char * argv[],struct ufs_args * args,int * mntflags,char * canon_dev,char * canon_dir)69 mount_chfs_parseargs(int argc, char *argv[], struct ufs_args *args,
70 int *mntflags, char *canon_dev, char *canon_dir)
71 {
72 int ch;
73 mntoptparse_t mp;
74 struct stat sb;
75
76 /* Set default values for mount point arguments. */
77 memset(args, 0, sizeof(*args));
78 *mntflags = 0;
79
80 optind = optreset = 1;
81
82 while ((ch = getopt(argc, argv, "o:")) != -1) {
83 switch (ch) {
84 case 'o':
85 mp = getmntopts(optarg, mopts, mntflags, 0);
86 if (mp == NULL)
87 err(1, "getmntopts");
88 freemntopts(mp);
89 break;
90 case '?':
91 default:
92 usage();
93 }
94 }
95 argc -= optind;
96 argv += optind;
97
98 if (argc != 2)
99 usage();
100
101 pathadj(argv[0], canon_dev);
102 pathadj(argv[1], canon_dir);
103
104 args->fspec = canon_dev;
105
106 if (stat(canon_dir, &sb) == -1) {
107 err(EXIT_FAILURE, "cannot stat `%s'", canon_dir);
108 }
109
110 }
111
112 /* --------------------------------------------------------------------- */
113
114 static void
usage(void)115 usage(void)
116 {
117 (void)fprintf(stderr,
118 "usage: %s special mountpath\n",
119 getprogname());
120 exit(1);
121 }
122
123 /* --------------------------------------------------------------------- */
124
125 int
mount_chfs(int argc,char * argv[])126 mount_chfs(int argc, char *argv[])
127 {
128 struct ufs_args args;
129 char canon_dev[MAXPATHLEN], fs_name[MAXPATHLEN];
130 int mntflags;
131
132 mount_chfs_parseargs(argc, argv, &args, &mntflags,
133 canon_dev, fs_name);
134
135 if (mount(MOUNT_CHFS, fs_name, mntflags, &args, sizeof args) == -1) {
136 err(EXIT_FAILURE, "chfs on %s", fs_name);
137 }
138
139 return EXIT_SUCCESS;
140 }
141
142 #ifndef MOUNT_NOMAIN
143 int
main(int argc,char * argv[])144 main(int argc, char *argv[])
145 {
146 setprogname(argv[0]);
147 return mount_chfs(argc, argv);
148 }
149 #endif
150