aboutsummaryrefslogtreecommitdiffstats
path: root/amd/ops_udf.c
blob: b029365c68f2dfa32d951e614265797c90663095 (plain) (blame)
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
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
/*
 * Copyright (c) 1997-2014 Erez Zadok
 * Copyright (c) 1990 Jan-Simon Pendry
 * Copyright (c) 1990 Imperial College of Science, Technology & Medicine
 * Copyright (c) 1990 The Regents of the University of California.
 * All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * Jan-Simon Pendry at Imperial College, London.
 *
 * 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.
 * 3. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
 *
 *
 * File: am-utils/amd/ops_udf.c
 *
 */

/*
 * UDF file system
 */

#ifdef HAVE_CONFIG_H
# include <config.h>
#endif /* HAVE_CONFIG_H */
#include <am_defs.h>
#include <amd.h>

/* forward definitions */
static char *udf_match(am_opts *fo);
static int udf_mount(am_node *am, mntfs *mf);
static int udf_umount(am_node *am, mntfs *mf);

/*
 * Ops structure
 */
am_ops udf_ops =
{
	"udf",
	udf_match,
	0,				/* udf_init */
	udf_mount,
	udf_umount,
	amfs_error_lookup_child,
	amfs_error_mount_child,
	amfs_error_readdir,
	0,				/* udf_readlink */
	0,				/* udf_mounted */
	0,				/* udf_umounted */
	amfs_generic_find_srvr,
	0,				/* udf_get_wchan */
	FS_MKMNT | FS_UBACKGROUND | FS_AMQINFO,	/* nfs_fs_flags */
#ifdef HAVE_FS_AUTOFS
	AUTOFS_UDF_FS_FLAGS,
#endif /* HAVE_FS_AUTOFS */
};

#if defined(HAVE_UDF_ARGS_T_NOBODY_GID) || defined(HAVE_UDF_ARGS_T_NOBODY_UID)
static int
a_num(const char *s, const char *id_type)
{
	int id;
	char *ep;

	id = strtol(s, &ep, 0);
	if (*ep || s == ep || id < 0) {
		plog(XLOG_ERROR, "mount_udf: unknown %s: %s", id_type, s);
		return 0;
	}
	return id;
}
#endif /* defined(HAVE_UDF_ARGS_T_NOBODY_GID) || defined(HAVE_UDF_ARGS_T_NOBODY_UID) */

#if defined(HAVE_UDF_ARGS_T_NOBODY_GID)
static gid_t
a_gid(const char *s, const char *id_type)
{
	struct group *gr;

	if ((gr = getgrnam(s)) != NULL)
		return gr->gr_gid;
	return a_num(s, id_type);
}
#endif /* defined(HAVE_UDF_ARGS_T_NOBODY_GID) */

#if defined(HAVE_UDF_ARGS_T_NOBODY_UID)
static uid_t
a_uid(const char *s, const char *id_type)
{
	struct passwd *pw;

	if ((pw = getpwnam(s)) != NULL)
		return pw->pw_uid;
	return a_num(s, id_type);
}
#endif /* defined(HAVE_UDF_ARGS_T_NOBODY_UID) */

/*
 * UDF needs remote filesystem.
 */
static char *
udf_match(am_opts *fo)
{

	if (!fo->opt_dev) {
		plog(XLOG_USER, "udf: no source device specified");
		return 0;
	}
	dlog("UDF: mounting device \"%s\" on \"%s\"", fo->opt_dev, fo->opt_fs);

	/*
	 * Determine magic cookie to put in mtab
	 */
	return xstrdup(fo->opt_dev);
}

static int
mount_udf(char *mntdir, char *fs_name, char *opts, int on_autofs)
{
	udf_args_t udf_args;
	mntent_t mnt;
	int flags;
	char *str;
#if defined(HAVE_UDF_ARGS_T_NOBODY_UID) || defined(HAVE_UDF_ARGS_T_ANON_UID)
	uid_t uid_nobody;
	gid_t gid_nobody;
#endif /* defined(HAVE_UDF_ARGS_T_NOBODY_UID) || defined(HAVE_UDF_ARGS_T_ANON_UID) */
	/*
	 * Figure out the name of the file system type.
	 */
	MTYPE_TYPE type = MOUNT_TYPE_UDF;

#if defined(HAVE_UDF_ARGS_T_NOBODY_UID) || defined(HAVE_UDF_ARGS_T_ANON_UID)
	uid_nobody = a_uid("nobody", "user");
	if (uid_nobody == 0) {
		plog(XLOG_ERROR, "mount_udf: invalid uid for nobody");
		return EPERM;
	}
#endif /* defined(HAVE_UDF_ARGS_T_NOBODY_UID) || defined(HAVE_UDF_ARGS_T_ANON_UID) */

#if defined(HAVE_UDF_ARGS_T_NOBODY_GID) || defined(HAVE_UDF_ARGS_T_ANON_GID)
	gid_nobody = a_gid("nobody", "group");
	if (gid_nobody == 0) {
		plog(XLOG_ERROR, "mount_udf: invalid gid for nobody");
		return EPERM;
	}
#endif /* defined(HAVE_UDF_ARGS_T_NOBODY_GID) || defined(HAVE_UDF_ARGS_T_ANON_GID) */

	str = NULL;
	memset((voidp) &udf_args, 0, sizeof(udf_args)); /* Paranoid */

	/*
	 * Fill in the mount structure
	 */
	memset((voidp)&mnt, 0, sizeof(mnt));
	mnt.mnt_dir = mntdir;
	mnt.mnt_fsname = fs_name;
	mnt.mnt_type = MNTTAB_TYPE_UDF;
	mnt.mnt_opts = opts;

	flags = compute_mount_flags(&mnt);

#ifdef HAVE_UDF_ARGS_T_UDFMFLAGS
# if defined(MNT2_UDF_OPT_CLOSESESSION) && defined(MNTTAB_OPT_CLOSESESSION)
	if (amu_hasmntopt(&mnt, MNTTAB_OPT_CLOSESESSION))
		udf_args.udfmflags |= MNT2_UDF_OPT_CLOSESESSION;
# endif /* defined(MNT2_UDF_OPT_CLOSESESSION) && defined(MNTTAB_OPT_CLOSESESSION) */
#endif /* HAVE_UDF_ARGS_T_UDFMFLAGS */

#ifdef HAVE_UDF_ARGS_T_NOBODY_UID
	udf_args.nobody_uid = uid_nobody;
#endif /* HAVE_UDF_ARGS_T_NOBODY_UID */

#ifdef HAVE_UDF_ARGS_T_NOBODY_GID
	udf_args.nobody_gid = gid_nobody;
#endif /* HAVE_UDF_ARGS_T_NOBODY_GID */

#ifdef HAVE_UDF_ARGS_T_ANON_UID
	udf_args.anon_uid = uid_nobody;	/* default to nobody */
	if ((str = hasmntstr(&mnt, MNTTAB_OPT_USER)) != NULL) {
		udf_args.anon_uid = a_uid(str, MNTTAB_OPT_USER);
		XFREE(str);
	}
#endif /* HAVE_UDF_ARGS_T_ANON_UID */

#ifdef HAVE_UDF_ARGS_T_ANON_GID
	udf_args.anon_gid = gid_nobody;	/* default to nobody */
	if ((str = hasmntstr(&mnt, MNTTAB_OPT_GROUP)) != NULL) {
		udf_args.anon_gid = a_gid(str, MNTTAB_OPT_GROUP);
		XFREE(str);
	}
#endif /* HAVE_UDF_ARGS_T_ANON_GID */

#ifdef HAVE_UDF_ARGS_T_GMTOFF
	udf_args.gmtoff = 0;
	if ((str = hasmntstr(&mnt, MNTTAB_OPT_GMTOFF)) != NULL) {
		udf_args.gmtoff = a_num(str, MNTTAB_OPT_GMTOFF);
		XFREE(str);
	}
#endif /* HAVE_UDF_ARGS_T_GMTOFF */

#ifdef HAVE_UDF_ARGS_T_SESSIONNR
	udf_args.sessionnr = 0;
	if ((str = hasmntstr(&mnt, MNTTAB_OPT_SESSIONNR)) != NULL) {
		udf_args.sessionnr = a_num(str, MNTTAB_OPT_SESSIONNR);
		XFREE(str);
	}
#endif /* HAVE_UDF_ARGS_T_SESSIONNR */

#ifdef HAVE_UDF_ARGS_T_VERSION
# ifdef UDFMNT_VERSION
	udf_args.version = UDFMNT_VERSION;
# endif /* UDFMNT_VERSION */
#endif /* HAVE_UDF_ARGS_T_VERSION */

#ifdef HAVE_UFS_ARGS_T_FSPEC
	udf_args.fspec = fs_name;
#endif /* HAVE_UFS_ARGS_T_FSPEC */

	/*
	 * Call generic mount routine
	 */
	return mount_fs(&mnt, flags, (caddr_t)&udf_args, 0, type, 0, NULL,
	    mnttab_file_name, on_autofs);
}

static int
udf_mount(am_node *am, mntfs *mf)
{
	int on_autofs;
	int error;

	on_autofs = mf->mf_flags & MFF_ON_AUTOFS;
	error = mount_udf(mf->mf_mount, mf->mf_info, mf->mf_mopts, on_autofs);
	if (error) {
		errno = error;
		plog(XLOG_ERROR, "mount_udf: %m");
		return error;
	}
	return 0;
}


static int
udf_umount(am_node *am, mntfs *mf)
{
	int unmount_flags;

	unmount_flags = (mf->mf_flags & MFF_ON_AUTOFS) ? AMU_UMOUNT_AUTOFS : 0;
	return UMOUNT_FS(mf->mf_mount, mnttab_file_name, unmount_flags);
}