1/*-
2 * SPDX-License-Identifier: BSD-3-Clause
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 donated 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#include <sys/param.h>
36#include <sys/mount.h>
37
38#include <err.h>
39#include <getopt.h>
40#include <libgen.h>
41#include <stdio.h>
42#include <stdlib.h>
43#include <string.h>
44#include <unistd.h>
45
46#include "extern.h"
47#include "mntopts.h"
48
49static struct mntopt mopts[] = {
50	MOPT_STDOPTS,
51	MOPT_END
52};
53
54static void
55usage(void)
56{
57	(void)fprintf(stderr,
58		"usage: mount [-t fstype] [-o options] target_fs mount_point\n");
59	exit(1);
60}
61
62int
63mount_fs(const char *vfstype, int argc, char *argv[])
64{
65	struct iovec *iov;
66	int iovlen;
67	int mntflags = 0;
68	int ch;
69	char *dev, *dir, mntpath[MAXPATHLEN];
70	char fstype[32];
71	char errmsg[255];
72	char *p, *val;
73
74	strlcpy(fstype, vfstype, sizeof(fstype));
75	memset(errmsg, 0, sizeof(errmsg));
76
77	getmnt_silent = 1;
78	iov = NULL;
79	iovlen = 0;
80
81	optind = optreset = 1;		/* Reset for parse of new argv. */
82	while ((ch = getopt(argc, argv, "o:")) != -1) {
83		switch(ch) {
84		case 'o':
85			getmntopts(optarg, mopts, &mntflags, 0);
86			p = strchr(optarg, '=');
87			val = NULL;
88			if (p != NULL) {
89				*p = '\0';
90				val = p + 1;
91			}
92			build_iovec(&iov, &iovlen, optarg, val, (size_t)-1);
93			break;
94		case '?':
95		default:
96			usage();
97		}
98	}
99
100	argc -= optind;
101	argv += optind;
102	if (argc != 2)
103		usage();
104
105	dev = argv[0];
106	dir = argv[1];
107
108	if (checkpath(dir, mntpath) != 0) {
109		warn("%s", mntpath);
110		return (1);
111	}
112	(void)rmslashes(dev, dev);
113
114	build_iovec(&iov, &iovlen, "fstype", fstype, (size_t)-1);
115	build_iovec(&iov, &iovlen, "fspath", mntpath, (size_t)-1);
116	build_iovec(&iov, &iovlen, "from", dev, (size_t)-1);
117	build_iovec(&iov, &iovlen, "errmsg", errmsg, sizeof(errmsg));
118
119	if (nmount(iov, iovlen, mntflags) == -1) {
120		if (*errmsg != '\0')
121			warn("%s: %s", dev, errmsg);
122		else
123			warn("%s", dev);
124		return (1);
125	}
126	return (0);
127}
128