1/*
2 * Copyright (c) 2006 Pawel Jakub Dawidek <pjd@FreeBSD.org>
3 * 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 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 */
26
27/*
28 * This file implements Solaris compatible zmount() function.
29 */
30
31#include <sys/param.h>
32#include <sys/mount.h>
33#include <sys/uio.h>
34#include <sys/mntent.h>
35#include <assert.h>
36#include <stdio.h>
37#include <stdlib.h>
38#include <string.h>
39#include <sys/mnttab.h>
40#include <sys/errno.h>
41#include <libzfs.h>
42
43#include "../../libzfs_impl.h"
44
45static void
46build_iovec(struct iovec **iov, int *iovlen, const char *name, void *val,
47    size_t len)
48{
49	int i;
50
51	if (*iovlen < 0)
52		return;
53	i = *iovlen;
54	*iov = realloc(*iov, sizeof (**iov) * (i + 2));
55	if (*iov == NULL) {
56		*iovlen = -1;
57		return;
58	}
59	(*iov)[i].iov_base = strdup(name);
60	(*iov)[i].iov_len = strlen(name) + 1;
61	i++;
62	(*iov)[i].iov_base = val;
63	if (len == (size_t)-1) {
64		if (val != NULL)
65			len = strlen(val) + 1;
66		else
67			len = 0;
68	}
69	(*iov)[i].iov_len = (int)len;
70	*iovlen = ++i;
71}
72
73int
74do_mount(zfs_handle_t *zhp, const char *mntpt, const char *opts, int flags)
75{
76	struct iovec *iov;
77	char *optstr, *p, *tofree;
78	int iovlen, rv;
79	const char *spec = zfs_get_name(zhp);
80
81	assert(spec != NULL);
82	assert(mntpt != NULL);
83	assert(opts != NULL);
84
85	tofree = optstr = strdup(opts);
86	assert(optstr != NULL);
87
88	iov = NULL;
89	iovlen = 0;
90	if (strstr(optstr, MNTOPT_REMOUNT) != NULL)
91		build_iovec(&iov, &iovlen, "update", NULL, 0);
92	if (flags & MS_RDONLY)
93		build_iovec(&iov, &iovlen, "ro", NULL, 0);
94	build_iovec(&iov, &iovlen, "fstype", __DECONST(char *, MNTTYPE_ZFS),
95	    (size_t)-1);
96	build_iovec(&iov, &iovlen, "fspath", __DECONST(char *, mntpt),
97	    (size_t)-1);
98	build_iovec(&iov, &iovlen, "from", __DECONST(char *, spec), (size_t)-1);
99	while ((p = strsep(&optstr, ",/")) != NULL)
100		build_iovec(&iov, &iovlen, p, NULL, (size_t)-1);
101	rv = nmount(iov, iovlen, 0);
102	free(tofree);
103	if (rv < 0)
104		return (errno);
105	return (rv);
106
107}
108
109int
110do_unmount(zfs_handle_t *zhp, const char *mntpt, int flags)
111{
112	(void) zhp;
113	if (unmount(mntpt, flags) < 0)
114		return (errno);
115	return (0);
116}
117
118int
119zfs_mount_delegation_check(void)
120{
121	return (0);
122}
123
124/* Called from the tail end of zpool_disable_datasets() */
125void
126zpool_disable_datasets_os(zpool_handle_t *zhp, boolean_t force)
127{
128	(void) zhp, (void) force;
129}
130
131/* Called from the tail end of zfs_unmount() */
132void
133zpool_disable_volume_os(const char *name)
134{
135	(void) name;
136}
137