1 /*-
2  * Copyright (c) 1993, 1994
3  *	The Regents of the University of California.  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. Neither the name of the University nor the names of its contributors
14  *    may be used to endorse or promote products derived from this software
15  *    without specific prior written permission.
16  *
17  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27  * SUCH DAMAGE.
28  *
29  * @(#) Copyright (c) 1993, 1994 The Regents of the University of California.  All rights reserved.
30  * @(#)mount_lfs.c	8.3 (Berkeley) 3/27/94
31  * $FreeBSD: src/sbin/mount_ext2fs/mount_ext2fs.c,v 1.11 1999/10/09 11:54:09 phk Exp $
32  */
33 
34 #include <sys/param.h>
35 #include <sys/mount.h>
36 
37 #include <err.h>
38 #include <mntopts.h>
39 #include <stdio.h>
40 #include <stdlib.h>
41 #include <string.h>
42 #include <sysexits.h>
43 #include <unistd.h>
44 
45 #include <vfs/ufs/ufsmount.h>
46 
47 struct mntopt mopts[] = {
48 	MOPT_STDOPTS,
49 	MOPT_FORCE,
50 	MOPT_SYNC,
51 	MOPT_UPDATE,
52 	MOPT_NULL
53 };
54 
55 static void	usage(void) __dead2;
56 
57 int
main(int argc,char ** argv)58 main(int argc, char **argv)
59 {
60 	struct ufs_args args;
61 	int ch, mntflags;
62 	char *fs_name, mntpath[MAXPATHLEN];
63 	struct vfsconf vfc;
64 	int error;
65 
66 	mntflags = 0;
67 	while ((ch = getopt(argc, argv, "o:")) != -1)
68 		switch (ch) {
69 		case 'o':
70 			getmntopts(optarg, mopts, &mntflags, 0);
71 			break;
72 		case '?':
73 		default:
74 			usage();
75 		}
76 	argc -= optind;
77 	argv += optind;
78 
79 	if (argc != 2)
80 		usage();
81 
82         args.fspec = argv[0];	/* the name of the device file */
83 	fs_name = argv[1];	/* the mount point */
84 
85 	/*
86 	 * Resolve the mountpoint with realpath(3) and remove unnecessary
87 	 * slashes from the devicename if there are any.
88 	 */
89 	checkpath(fs_name, mntpath);
90 	rmslashes(args.fspec, args.fspec);
91 
92 #define DEFAULT_ROOTUID	-2
93 	args.export.ex_root = DEFAULT_ROOTUID;
94 	if (mntflags & MNT_RDONLY)
95 		args.export.ex_flags = MNT_EXRDONLY;
96 	else
97 		args.export.ex_flags = 0;
98 
99 	error = getvfsbyname("ext2fs", &vfc);
100 	if (error && vfsisloadable("ext2fs")) {
101 		if (vfsload("ext2fs")) {
102 			err(EX_OSERR, "vfsload(ext2fs)");
103 		}
104 		endvfsent();	/* flush cache */
105 		error = getvfsbyname("ext2fs", &vfc);
106 	}
107 	if (error)
108 		errx(EX_OSERR, "ext2fs filesystem is not available");
109 
110 	if (mount(vfc.vfc_name, mntpath, mntflags, &args) < 0)
111 		err(EX_OSERR, "%s", args.fspec);
112 	exit(0);
113 }
114 
115 void
usage(void)116 usage(void)
117 {
118 	fprintf(stderr,
119 	    "usage: mount_ext2fs [-o options] special node\n");
120 	exit(EX_USAGE);
121 }
122