xref: /freebsd/sbin/mount/mount_fs.c (revision 7750ad47a9a7dbc83f87158464170c8640723293)
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  * 4. Neither the name of the University nor the names of its contributors
17  *    may be used to endorse or promote products derived from this software
18  *    without specific prior written permission.
19  *
20  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28  * LIABILITY, 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 #ifndef lint
34 static const char copyright[] =
35 "@(#) Copyright (c) 1992, 1993, 1994\n\
36 	The Regents of the University of California.  All rights reserved.\n";
37 #endif /* not lint */
38 
39 #ifndef lint
40 #if 0
41 static char sccsid[] = "@(#)mount_fs.c	8.6 (Berkeley) 4/26/95";
42 #endif
43 static const char rcsid[] =
44 	"$FreeBSD$";
45 #endif /* not lint */
46 
47 #include <sys/param.h>
48 #include <sys/mount.h>
49 
50 #include <err.h>
51 #include <getopt.h>
52 #include <libgen.h>
53 #include <stdio.h>
54 #include <stdlib.h>
55 #include <string.h>
56 #include <unistd.h>
57 
58 #include "extern.h"
59 #include "mntopts.h"
60 
61 static struct mntopt mopts[] = {
62 	MOPT_STDOPTS,
63 	MOPT_END
64 };
65 
66 static void
67 usage(void)
68 {
69 	(void)fprintf(stderr,
70 		"usage: mount [-t fstype] [-o options] target_fs mount_point\n");
71 	exit(1);
72 }
73 
74 int
75 mount_fs(const char *vfstype, int argc, char *argv[])
76 {
77 	struct iovec *iov;
78 	int iovlen;
79 	int mntflags = 0;
80 	int ch;
81 	char *dev, *dir, mntpath[MAXPATHLEN];
82 	char fstype[32];
83 	char errmsg[255];
84 	char *p, *val;
85 
86 	strlcpy(fstype, vfstype, sizeof(fstype));
87 	memset(errmsg, 0, sizeof(errmsg));
88 
89 	getmnt_silent = 1;
90 	iov = NULL;
91 	iovlen = 0;
92 
93 	optind = optreset = 1;		/* Reset for parse of new argv. */
94 	while ((ch = getopt(argc, argv, "o:")) != -1) {
95 		switch(ch) {
96 		case 'o':
97 			getmntopts(optarg, mopts, &mntflags, 0);
98 			p = strchr(optarg, '=');
99 			val = NULL;
100 			if (p != NULL) {
101 				*p = '\0';
102 				val = p + 1;
103 			}
104 			build_iovec(&iov, &iovlen, optarg, val, (size_t)-1);
105 			break;
106 		case '?':
107 		default:
108 			usage();
109 		}
110 	}
111 
112 	argc -= optind;
113 	argv += optind;
114 	if (argc != 2)
115 		usage();
116 
117 	dev = argv[0];
118 	dir = argv[1];
119 
120 	if (checkpath(dir, mntpath) != 0) {
121 		warn("%s", mntpath);
122 		return (1);
123 	}
124 	(void)rmslashes(dev, dev);
125 
126 	build_iovec(&iov, &iovlen, "fstype", fstype, (size_t)-1);
127 	build_iovec(&iov, &iovlen, "fspath", mntpath, (size_t)-1);
128 	build_iovec(&iov, &iovlen, "from", dev, (size_t)-1);
129 	build_iovec(&iov, &iovlen, "errmsg", errmsg, sizeof(errmsg));
130 
131 	if (nmount(iov, iovlen, mntflags) == -1) {
132 		if (*errmsg != '\0')
133 			warn("%s: %s", dev, errmsg);
134 		else
135 			warn("%s", dev);
136 		return (1);
137 	}
138 	return (0);
139 }
140