1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
|
/*
* Copyright (c) 2006 Pawel Jakub Dawidek <pjd@FreeBSD.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
/*
* This file implements Solaris compatible zmount() function.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/mount.h>
#include <sys/uio.h>
#include <sys/mntent.h>
#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/mnttab.h>
#include <sys/errno.h>
#include <libzfs.h>
static void
build_iovec(struct iovec **iov, int *iovlen, const char *name, void *val,
size_t len)
{
int i;
if (*iovlen < 0)
return;
i = *iovlen;
*iov = realloc(*iov, sizeof (**iov) * (i + 2));
if (*iov == NULL) {
*iovlen = -1;
return;
}
(*iov)[i].iov_base = strdup(name);
(*iov)[i].iov_len = strlen(name) + 1;
i++;
(*iov)[i].iov_base = val;
if (len == (size_t)-1) {
if (val != NULL)
len = strlen(val) + 1;
else
len = 0;
}
(*iov)[i].iov_len = (int)len;
*iovlen = ++i;
}
static int
do_mount_(const char *spec, const char *dir, int mflag, char *fstype,
char *dataptr, int datalen, char *optptr, int optlen)
{
struct iovec *iov;
char *optstr, *p, *tofree;
int iovlen, rv;
assert(spec != NULL);
assert(dir != NULL);
assert(fstype != NULL);
assert(strcmp(fstype, MNTTYPE_ZFS) == 0);
assert(dataptr == NULL);
assert(datalen == 0);
assert(optptr != NULL);
assert(optlen > 0);
tofree = optstr = strdup(optptr);
assert(optstr != NULL);
iov = NULL;
iovlen = 0;
if (strstr(optstr, MNTOPT_REMOUNT) != NULL)
build_iovec(&iov, &iovlen, "update", NULL, 0);
if (strstr(optstr, MNTOPT_NOXATTR) == NULL &&
strstr(optstr, MNTOPT_XATTR) == NULL &&
strstr(optstr, MNTOPT_SAXATTR) == NULL &&
strstr(optstr, MNTOPT_DIRXATTR) == NULL)
build_iovec(&iov, &iovlen, "xattr", NULL, 0);
if (mflag & MS_RDONLY)
build_iovec(&iov, &iovlen, "ro", NULL, 0);
build_iovec(&iov, &iovlen, "fstype", fstype, (size_t)-1);
build_iovec(&iov, &iovlen, "fspath", __DECONST(char *, dir),
(size_t)-1);
build_iovec(&iov, &iovlen, "from", __DECONST(char *, spec), (size_t)-1);
while ((p = strsep(&optstr, ",/")) != NULL)
build_iovec(&iov, &iovlen, p, NULL, (size_t)-1);
rv = nmount(iov, iovlen, 0);
free(tofree);
if (rv < 0)
return (errno);
return (rv);
}
int
do_mount(zfs_handle_t *zhp, const char *mntpt, char *opts, int flags)
{
return (do_mount_(zfs_get_name(zhp), mntpt, flags, MNTTYPE_ZFS, NULL, 0,
opts, sizeof (mntpt)));
}
int
do_unmount(const char *mntpt, int flags)
{
return (unmount(mntpt, flags));
}
int
zfs_mount_delegation_check(void)
{
return (0);
}
/*
* Check if we are doing an overlay mount.
* Returns B_TRUE if the mount would overlay, otherwise B_FALSE.
*/
boolean_t
zfs_mount_overlay_check(const char *mountpoint)
{
/* FreeBSD always allows overlay mounts. */
return (B_FALSE);
}
|
