1 /*
2 * Copyright (c) 1997-2014 Erez Zadok
3 * Copyright (c) 1990 Jan-Simon Pendry
4 * Copyright (c) 1990 Imperial College of Science, Technology & Medicine
5 * Copyright (c) 1990 The Regents of the University of California.
6 * All rights reserved.
7 *
8 * This code is derived from software contributed to Berkeley by
9 * Jan-Simon Pendry at Imperial College, London.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 * 3. Neither the name of the University nor the names of its contributors
20 * may be used to endorse or promote products derived from this software
21 * without specific prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * SUCH DAMAGE.
34 *
35 *
36 * File: am-utils/amd/ops_udf.c
37 *
38 */
39
40 /*
41 * UDF file system
42 */
43
44 #ifdef HAVE_CONFIG_H
45 # include <config.h>
46 #endif /* HAVE_CONFIG_H */
47 #include <am_defs.h>
48 #include <amd.h>
49
50 /* forward definitions */
51 static char *udf_match(am_opts *fo);
52 static int udf_mount(am_node *am, mntfs *mf);
53 static int udf_umount(am_node *am, mntfs *mf);
54
55 /*
56 * Ops structure
57 */
58 am_ops udf_ops =
59 {
60 "udf",
61 udf_match,
62 0, /* udf_init */
63 udf_mount,
64 udf_umount,
65 amfs_error_lookup_child,
66 amfs_error_mount_child,
67 amfs_error_readdir,
68 0, /* udf_readlink */
69 0, /* udf_mounted */
70 0, /* udf_umounted */
71 amfs_generic_find_srvr,
72 0, /* udf_get_wchan */
73 FS_MKMNT | FS_UBACKGROUND | FS_AMQINFO, /* nfs_fs_flags */
74 #ifdef HAVE_FS_AUTOFS
75 AUTOFS_UDF_FS_FLAGS,
76 #endif /* HAVE_FS_AUTOFS */
77 };
78
79 #if defined(HAVE_UDF_ARGS_T_NOBODY_GID) || defined(HAVE_UDF_ARGS_T_NOBODY_UID)
80 static int
a_num(const char * s,const char * id_type)81 a_num(const char *s, const char *id_type)
82 {
83 int id;
84 char *ep;
85
86 id = strtol(s, &ep, 0);
87 if (*ep || s == ep || id < 0) {
88 plog(XLOG_ERROR, "mount_udf: unknown %s: %s", id_type, s);
89 return 0;
90 }
91 return id;
92 }
93 #endif /* defined(HAVE_UDF_ARGS_T_NOBODY_GID) || defined(HAVE_UDF_ARGS_T_NOBODY_UID) */
94
95 #if defined(HAVE_UDF_ARGS_T_NOBODY_GID)
96 static gid_t
a_gid(const char * s,const char * id_type)97 a_gid(const char *s, const char *id_type)
98 {
99 struct group *gr;
100
101 if ((gr = getgrnam(s)) != NULL)
102 return gr->gr_gid;
103 return a_num(s, id_type);
104 }
105 #endif /* defined(HAVE_UDF_ARGS_T_NOBODY_GID) */
106
107 #if defined(HAVE_UDF_ARGS_T_NOBODY_UID)
108 static uid_t
a_uid(const char * s,const char * id_type)109 a_uid(const char *s, const char *id_type)
110 {
111 struct passwd *pw;
112
113 if ((pw = getpwnam(s)) != NULL)
114 return pw->pw_uid;
115 return a_num(s, id_type);
116 }
117 #endif /* defined(HAVE_UDF_ARGS_T_NOBODY_UID) */
118
119 /*
120 * UDF needs remote filesystem.
121 */
122 static char *
udf_match(am_opts * fo)123 udf_match(am_opts *fo)
124 {
125
126 if (!fo->opt_dev) {
127 plog(XLOG_USER, "udf: no source device specified");
128 return 0;
129 }
130 dlog("UDF: mounting device \"%s\" on \"%s\"", fo->opt_dev, fo->opt_fs);
131
132 /*
133 * Determine magic cookie to put in mtab
134 */
135 return xstrdup(fo->opt_dev);
136 }
137
138 static int
mount_udf(char * mntdir,char * fs_name,char * opts,int on_autofs)139 mount_udf(char *mntdir, char *fs_name, char *opts, int on_autofs)
140 {
141 udf_args_t udf_args;
142 mntent_t mnt;
143 int flags;
144 char *str;
145 #if defined(HAVE_UDF_ARGS_T_NOBODY_UID) || defined(HAVE_UDF_ARGS_T_ANON_UID)
146 uid_t uid_nobody;
147 gid_t gid_nobody;
148 #endif /* defined(HAVE_UDF_ARGS_T_NOBODY_UID) || defined(HAVE_UDF_ARGS_T_ANON_UID) */
149 /*
150 * Figure out the name of the file system type.
151 */
152 MTYPE_TYPE type = MOUNT_TYPE_UDF;
153
154 #if defined(HAVE_UDF_ARGS_T_NOBODY_UID) || defined(HAVE_UDF_ARGS_T_ANON_UID)
155 uid_nobody = a_uid("nobody", "user");
156 if (uid_nobody == 0) {
157 plog(XLOG_ERROR, "mount_udf: invalid uid for nobody");
158 return EPERM;
159 }
160 #endif /* defined(HAVE_UDF_ARGS_T_NOBODY_UID) || defined(HAVE_UDF_ARGS_T_ANON_UID) */
161
162 #if defined(HAVE_UDF_ARGS_T_NOBODY_GID) || defined(HAVE_UDF_ARGS_T_ANON_GID)
163 gid_nobody = a_gid("nobody", "group");
164 if (gid_nobody == 0) {
165 plog(XLOG_ERROR, "mount_udf: invalid gid for nobody");
166 return EPERM;
167 }
168 #endif /* defined(HAVE_UDF_ARGS_T_NOBODY_GID) || defined(HAVE_UDF_ARGS_T_ANON_GID) */
169
170 str = NULL;
171 memset((voidp) &udf_args, 0, sizeof(udf_args)); /* Paranoid */
172
173 /*
174 * Fill in the mount structure
175 */
176 memset((voidp)&mnt, 0, sizeof(mnt));
177 mnt.mnt_dir = mntdir;
178 mnt.mnt_fsname = fs_name;
179 mnt.mnt_type = MNTTAB_TYPE_UDF;
180 mnt.mnt_opts = opts;
181
182 flags = compute_mount_flags(&mnt);
183
184 #ifdef HAVE_UDF_ARGS_T_UDFMFLAGS
185 # if defined(MNT2_UDF_OPT_CLOSESESSION) && defined(MNTTAB_OPT_CLOSESESSION)
186 if (amu_hasmntopt(&mnt, MNTTAB_OPT_CLOSESESSION))
187 udf_args.udfmflags |= MNT2_UDF_OPT_CLOSESESSION;
188 # endif /* defined(MNT2_UDF_OPT_CLOSESESSION) && defined(MNTTAB_OPT_CLOSESESSION) */
189 #endif /* HAVE_UDF_ARGS_T_UDFMFLAGS */
190
191 #ifdef HAVE_UDF_ARGS_T_NOBODY_UID
192 udf_args.nobody_uid = uid_nobody;
193 #endif /* HAVE_UDF_ARGS_T_NOBODY_UID */
194
195 #ifdef HAVE_UDF_ARGS_T_NOBODY_GID
196 udf_args.nobody_gid = gid_nobody;
197 #endif /* HAVE_UDF_ARGS_T_NOBODY_GID */
198
199 #ifdef HAVE_UDF_ARGS_T_ANON_UID
200 udf_args.anon_uid = uid_nobody; /* default to nobody */
201 if ((str = hasmntstr(&mnt, MNTTAB_OPT_USER)) != NULL) {
202 udf_args.anon_uid = a_uid(str, MNTTAB_OPT_USER);
203 XFREE(str);
204 }
205 #endif /* HAVE_UDF_ARGS_T_ANON_UID */
206
207 #ifdef HAVE_UDF_ARGS_T_ANON_GID
208 udf_args.anon_gid = gid_nobody; /* default to nobody */
209 if ((str = hasmntstr(&mnt, MNTTAB_OPT_GROUP)) != NULL) {
210 udf_args.anon_gid = a_gid(str, MNTTAB_OPT_GROUP);
211 XFREE(str);
212 }
213 #endif /* HAVE_UDF_ARGS_T_ANON_GID */
214
215 #ifdef HAVE_UDF_ARGS_T_GMTOFF
216 udf_args.gmtoff = 0;
217 if ((str = hasmntstr(&mnt, MNTTAB_OPT_GMTOFF)) != NULL) {
218 udf_args.gmtoff = a_num(str, MNTTAB_OPT_GMTOFF);
219 XFREE(str);
220 }
221 #endif /* HAVE_UDF_ARGS_T_GMTOFF */
222
223 #ifdef HAVE_UDF_ARGS_T_SESSIONNR
224 udf_args.sessionnr = 0;
225 if ((str = hasmntstr(&mnt, MNTTAB_OPT_SESSIONNR)) != NULL) {
226 udf_args.sessionnr = a_num(str, MNTTAB_OPT_SESSIONNR);
227 XFREE(str);
228 }
229 #endif /* HAVE_UDF_ARGS_T_SESSIONNR */
230
231 #ifdef HAVE_UDF_ARGS_T_VERSION
232 # ifdef UDFMNT_VERSION
233 udf_args.version = UDFMNT_VERSION;
234 # endif /* UDFMNT_VERSION */
235 #endif /* HAVE_UDF_ARGS_T_VERSION */
236
237 #ifdef HAVE_UDF_ARGS_T_FSPEC
238 udf_args.fspec = fs_name;
239 #endif /* HAVE_UFS_ARGS_T_FSPEC */
240
241 /*
242 * Call generic mount routine
243 */
244 return mount_fs(&mnt, flags, (caddr_t)&udf_args, 0, type, 0, NULL,
245 mnttab_file_name, on_autofs);
246 }
247
248 static int
udf_mount(am_node * am,mntfs * mf)249 udf_mount(am_node *am, mntfs *mf)
250 {
251 int on_autofs;
252 int error;
253
254 on_autofs = mf->mf_flags & MFF_ON_AUTOFS;
255 error = mount_udf(mf->mf_mount, mf->mf_info, mf->mf_mopts, on_autofs);
256 if (error) {
257 errno = error;
258 plog(XLOG_ERROR, "mount_udf: %m");
259 return error;
260 }
261 return 0;
262 }
263
264
265 static int
udf_umount(am_node * am,mntfs * mf)266 udf_umount(am_node *am, mntfs *mf)
267 {
268 int unmount_flags;
269
270 unmount_flags = (mf->mf_flags & MFF_ON_AUTOFS) ? AMU_UMOUNT_AUTOFS : 0;
271 return UMOUNT_FS(mf->mf_mount, mnttab_file_name, unmount_flags);
272 }
273