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_ext.c
37 *
38 */
39
40 /*
41 * Irix UN*X file system: EXT (Extended 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 declarations */
51 static char *ext_match(am_opts *fo);
52 static int ext2_mount(am_node *am, mntfs *mf);
53 static int ext3_mount(am_node *am, mntfs *mf);
54 static int ext4_mount(am_node *am, mntfs *mf);
55 static int ext_umount(am_node *am, mntfs *mf);
56
57 /*
58 * Ops structure
59 */
60 am_ops ext2_ops =
61 {
62 "ext2",
63 ext_match,
64 0, /* ext_init */
65 ext2_mount,
66 ext_umount,
67 amfs_error_lookup_child,
68 amfs_error_mount_child,
69 amfs_error_readdir,
70 0, /* ext_readlink */
71 0, /* ext_mounted */
72 0, /* ext_umounted */
73 amfs_generic_find_srvr,
74 0, /* ext_get_wchan */
75 FS_MKMNT | FS_NOTIMEOUT | FS_UBACKGROUND | FS_AMQINFO, /* nfs_fs_flags */
76 #ifdef HAVE_FS_AUTOFS
77 AUTOFS_EXT_FS_FLAGS,
78 #endif /* HAVE_FS_AUTOFS */
79 };
80
81 am_ops ext3_ops =
82 {
83 "ext3",
84 ext_match,
85 0, /* ext_init */
86 ext3_mount,
87 ext_umount,
88 amfs_error_lookup_child,
89 amfs_error_mount_child,
90 amfs_error_readdir,
91 0, /* ext_readlink */
92 0, /* ext_mounted */
93 0, /* ext_umounted */
94 amfs_generic_find_srvr,
95 0, /* ext_get_wchan */
96 FS_MKMNT | FS_NOTIMEOUT | FS_UBACKGROUND | FS_AMQINFO, /* nfs_fs_flags */
97 #ifdef HAVE_FS_AUTOFS
98 AUTOFS_EXT_FS_FLAGS,
99 #endif /* HAVE_FS_AUTOFS */
100 };
101
102 am_ops ext4_ops =
103 {
104 "ext4",
105 ext_match,
106 0, /* ext_init */
107 ext4_mount,
108 ext_umount,
109 amfs_error_lookup_child,
110 amfs_error_mount_child,
111 amfs_error_readdir,
112 0, /* ext_readlink */
113 0, /* ext_mounted */
114 0, /* ext_umounted */
115 amfs_generic_find_srvr,
116 0, /* ext_get_wchan */
117 FS_MKMNT | FS_NOTIMEOUT | FS_UBACKGROUND | FS_AMQINFO, /* nfs_fs_flags */
118 #ifdef HAVE_FS_AUTOFS
119 AUTOFS_EXT_FS_FLAGS,
120 #endif /* HAVE_FS_AUTOFS */
121 };
122
123 /*
124 * EXT needs local filesystem and device.
125 */
126 static char *
ext_match(am_opts * fo)127 ext_match(am_opts *fo)
128 {
129
130 if (!fo->opt_dev) {
131 plog(XLOG_USER, "ext: no device specified");
132 return 0;
133 }
134
135 dlog("EXT: mounting device \"%s\" on \"%s\"", fo->opt_dev, fo->opt_fs);
136
137 /*
138 * Determine magic cookie to put in mtab
139 */
140 return xstrdup(fo->opt_dev);
141 }
142
143
144 static int
mount_ext(char * mntdir,char * fs_name,char * opts,int on_autofs,char * mount_type,const char * mnttab_type)145 mount_ext(char *mntdir, char *fs_name, char *opts, int on_autofs, char *
146 mount_type, const char *mnttab_type)
147 {
148 ext_args_t ext_args;
149 mntent_t mnt;
150 int flags;
151
152 /*
153 * Figure out the name of the file system type.
154 */
155 MTYPE_TYPE type = mount_type;
156
157 memset((voidp) &ext_args, 0, sizeof(ext_args)); /* Paranoid */
158
159 /*
160 * Fill in the mount structure
161 */
162 memset((voidp) &mnt, 0, sizeof(mnt));
163 mnt.mnt_dir = mntdir;
164 mnt.mnt_fsname = fs_name;
165 mnt.mnt_type = mnttab_type;
166 mnt.mnt_opts = opts;
167
168 flags = compute_mount_flags(&mnt);
169 #ifdef HAVE_FS_AUTOFS
170 if (on_autofs)
171 flags |= autofs_compute_mount_flags(&mnt);
172 #endif /* HAVE_FS_AUTOFS */
173
174 /*
175 * Call generic mount routine
176 */
177 return mount_fs(&mnt, flags, (caddr_t) &ext_args, 0, type, 0, NULL, mnttab_file_name, on_autofs);
178 }
179
180
181 static int
ext_mount(am_node * am,mntfs * mf,char * mount_type,const char * mnttab_type)182 ext_mount(am_node *am, mntfs *mf, char *mount_type,
183 const char *mnttab_type)
184 {
185 int on_autofs = mf->mf_flags & MFF_ON_AUTOFS;
186 int error;
187
188 error = mount_ext(mf->mf_mount, mf->mf_info, mf->mf_mopts, on_autofs,
189 mount_type, mnttab_type);
190 if (error) {
191 errno = error;
192 plog(XLOG_ERROR, "mount_ext: %m");
193 return error;
194 }
195
196 return 0;
197 }
198
199 static int
ext2_mount(am_node * am,mntfs * mf)200 ext2_mount(am_node *am, mntfs *mf)
201 {
202 return ext_mount(am, mf, MOUNT_TYPE_EXT2, MNTTAB_TYPE_EXT2);
203 }
204
205 static int
ext3_mount(am_node * am,mntfs * mf)206 ext3_mount(am_node *am, mntfs *mf)
207 {
208 return ext_mount(am, mf, MOUNT_TYPE_EXT3, MNTTAB_TYPE_EXT3);
209 }
210
211 static int
ext4_mount(am_node * am,mntfs * mf)212 ext4_mount(am_node *am, mntfs *mf)
213 {
214 return ext_mount(am, mf, MOUNT_TYPE_EXT4, MNTTAB_TYPE_EXT4);
215 }
216
217 static int
ext_umount(am_node * am,mntfs * mf)218 ext_umount(am_node *am, mntfs *mf)
219 {
220 int unmount_flags = (mf->mf_flags & MFF_ON_AUTOFS) ? AMU_UMOUNT_AUTOFS : 0;
221
222 return UMOUNT_FS(mf->mf_mount, mnttab_file_name, unmount_flags);
223 }
224