1/*	$NetBSD: mount_sysvbfs.c,v 1.7 2008/09/04 12:07:58 pooka Exp $	*/
2
3/*-
4 * Copyright (c) 1993, 1994
5 *	The Regents of the University of California.  All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the University nor the names of its contributors
16 *    may be used to endorse or promote products derived from this software
17 *    without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 */
31
32#include <sys/cdefs.h>
33#ifndef lint
34__COPYRIGHT("@(#) Copyright (c) 1993, 1994\
35 The Regents of the University of California.  All rights reserved.");
36#endif /* not lint */
37
38#ifndef lint
39__RCSID("$NetBSD: mount_sysvbfs.c,v 1.7 2008/09/04 12:07:58 pooka Exp $");
40#endif /* not lint */
41
42#include <sys/param.h>
43#include <sys/mount.h>
44
45#include <err.h>
46#include <errno.h>
47#include <stdio.h>
48#include <stdlib.h>
49
50#include <string.h>
51#include <unistd.h>
52
53#include <mntopts.h>
54
55#include "mountprog.h"
56#include "mount_sysvbfs.h"
57
58static const struct mntopt mopts[] = {
59	MOPT_STDOPTS,
60	MOPT_UPDATE,
61	MOPT_GETARGS,
62	MOPT_NULL,
63};
64
65__dead static void
66sysvbfs_usage(void)
67{
68
69	(void)fprintf(stderr, "usage: %s [-o options] special node\n",
70	    getprogname());
71	exit(EXIT_FAILURE);
72}
73
74#ifndef MOUNT_NOMAIN
75int
76main(int argc, char **argv)
77{
78
79	return mount_sysvbfs(argc, argv);
80}
81#endif
82
83void
84mount_sysvbfs_parseargs(int argc, char **argv,
85	struct sysvbfs_args *args, int *mntflags,
86	char *canon_dev, char *canon_dir)
87{
88	int ch;
89	mntoptparse_t mp;
90
91	*mntflags = 0;
92	optind = optreset = 1;		/* Reset for parse of new argv. */
93	while ((ch = getopt(argc, argv, "o:")) != -1)
94		switch (ch) {
95		case 'o':
96			mp = getmntopts(optarg, mopts, mntflags, 0);
97			if (mp == NULL)
98				err(1, "getmntopts");
99			freemntopts(mp);
100			break;
101		case '?':
102		default:
103			sysvbfs_usage();
104		}
105	argc -= optind;
106	argv += optind;
107
108	if (argc != 2)
109		sysvbfs_usage();
110
111	pathadj(argv[0], canon_dev);
112	args->fspec = canon_dev;
113	pathadj(argv[1], canon_dir);
114}
115
116int
117mount_sysvbfs(int argc, char *argv[])
118{
119	struct sysvbfs_args args;
120	char canon_dev[MAXPATHLEN], canon_dir[MAXPATHLEN];
121	const char *errcause;
122	int mntflags;
123
124	mount_sysvbfs_parseargs(argc, argv, &args, &mntflags,
125	    canon_dev, canon_dir);
126
127	if (mount(MOUNT_SYSVBFS, canon_dir, mntflags, &args, sizeof args)==-1) {
128		switch (errno) {
129		case EMFILE:
130			errcause = "mount table full";
131			break;
132		case EINVAL:
133			if (mntflags & MNT_UPDATE)
134				errcause =
135			    "specified device does not match mounted device";
136			else
137				errcause = "incorrect super block";
138			break;
139		default:
140			errcause = strerror(errno);
141			break;
142		}
143		errx(EXIT_FAILURE, "%s on %s: %s",
144		    canon_dev, canon_dir, errcause);
145	}
146	exit(EXIT_SUCCESS);
147}
148