1 /* $NetBSD: ops_ext.c,v 1.1.1.1 2015/01/17 16:34:15 christos Exp $ */
2
3 /*
4 * Copyright (c) 1997-2014 Erez Zadok
5 * Copyright (c) 1990 Jan-Simon Pendry
6 * Copyright (c) 1990 Imperial College of Science, Technology & Medicine
7 * Copyright (c) 1990 The Regents of the University of California.
8 * All rights reserved.
9 *
10 * This code is derived from software contributed to Berkeley by
11 * Jan-Simon Pendry at Imperial College, London.
12 *
13 * Redistribution and use in source and binary forms, with or without
14 * modification, are permitted provided that the following conditions
15 * are met:
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
21 * 3. Neither the name of the University nor the names of its contributors
22 * may be used to endorse or promote products derived from this software
23 * without specific prior written permission.
24 *
25 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
28 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35 * SUCH DAMAGE.
36 *
37 *
38 * File: am-utils/amd/ops_ext.c
39 *
40 */
41
42 /*
43 * Irix UN*X file system: EXT (Extended File System)
44 */
45
46 #ifdef HAVE_CONFIG_H
47 # include <config.h>
48 #endif /* HAVE_CONFIG_H */
49 #include <am_defs.h>
50 #include <amd.h>
51
52 /* forward declarations */
53 static char *ext_match(am_opts *fo);
54 static int ext2_mount(am_node *am, mntfs *mf);
55 static int ext3_mount(am_node *am, mntfs *mf);
56 static int ext4_mount(am_node *am, mntfs *mf);
57 static int ext_umount(am_node *am, mntfs *mf);
58
59 /*
60 * Ops structure
61 */
62 am_ops ext2_ops =
63 {
64 "ext2",
65 ext_match,
66 0, /* ext_init */
67 ext2_mount,
68 ext_umount,
69 amfs_error_lookup_child,
70 amfs_error_mount_child,
71 amfs_error_readdir,
72 0, /* ext_readlink */
73 0, /* ext_mounted */
74 0, /* ext_umounted */
75 amfs_generic_find_srvr,
76 0, /* ext_get_wchan */
77 FS_MKMNT | FS_NOTIMEOUT | FS_UBACKGROUND | FS_AMQINFO, /* nfs_fs_flags */
78 #ifdef HAVE_FS_AUTOFS
79 AUTOFS_EXT_FS_FLAGS,
80 #endif /* HAVE_FS_AUTOFS */
81 };
82
83 am_ops ext3_ops =
84 {
85 "ext3",
86 ext_match,
87 0, /* ext_init */
88 ext3_mount,
89 ext_umount,
90 amfs_error_lookup_child,
91 amfs_error_mount_child,
92 amfs_error_readdir,
93 0, /* ext_readlink */
94 0, /* ext_mounted */
95 0, /* ext_umounted */
96 amfs_generic_find_srvr,
97 0, /* ext_get_wchan */
98 FS_MKMNT | FS_NOTIMEOUT | FS_UBACKGROUND | FS_AMQINFO, /* nfs_fs_flags */
99 #ifdef HAVE_FS_AUTOFS
100 AUTOFS_EXT_FS_FLAGS,
101 #endif /* HAVE_FS_AUTOFS */
102 };
103
104 am_ops ext4_ops =
105 {
106 "ext4",
107 ext_match,
108 0, /* ext_init */
109 ext4_mount,
110 ext_umount,
111 amfs_error_lookup_child,
112 amfs_error_mount_child,
113 amfs_error_readdir,
114 0, /* ext_readlink */
115 0, /* ext_mounted */
116 0, /* ext_umounted */
117 amfs_generic_find_srvr,
118 0, /* ext_get_wchan */
119 FS_MKMNT | FS_NOTIMEOUT | FS_UBACKGROUND | FS_AMQINFO, /* nfs_fs_flags */
120 #ifdef HAVE_FS_AUTOFS
121 AUTOFS_EXT_FS_FLAGS,
122 #endif /* HAVE_FS_AUTOFS */
123 };
124
125 /*
126 * EXT needs local filesystem and device.
127 */
128 static char *
ext_match(am_opts * fo)129 ext_match(am_opts *fo)
130 {
131
132 if (!fo->opt_dev) {
133 plog(XLOG_USER, "ext: no device specified");
134 return 0;
135 }
136
137 dlog("EXT: mounting device \"%s\" on \"%s\"", fo->opt_dev, fo->opt_fs);
138
139 /*
140 * Determine magic cookie to put in mtab
141 */
142 return xstrdup(fo->opt_dev);
143 }
144
145
146 static int
mount_ext(char * mntdir,char * fs_name,char * opts,int on_autofs,char * mount_type,const char * mnttab_type)147 mount_ext(char *mntdir, char *fs_name, char *opts, int on_autofs, char *
148 mount_type, const char *mnttab_type)
149 {
150 ext_args_t ext_args;
151 mntent_t mnt;
152 int flags;
153
154 /*
155 * Figure out the name of the file system type.
156 */
157 MTYPE_TYPE type = mount_type;
158
159 memset((voidp) &ext_args, 0, sizeof(ext_args)); /* Paranoid */
160
161 /*
162 * Fill in the mount structure
163 */
164 memset((voidp) &mnt, 0, sizeof(mnt));
165 mnt.mnt_dir = mntdir;
166 mnt.mnt_fsname = fs_name;
167 mnt.mnt_type = mnttab_type;
168 mnt.mnt_opts = opts;
169
170 flags = compute_mount_flags(&mnt);
171 #ifdef HAVE_FS_AUTOFS
172 if (on_autofs)
173 flags |= autofs_compute_mount_flags(&mnt);
174 #endif /* HAVE_FS_AUTOFS */
175
176 /*
177 * Call generic mount routine
178 */
179 return mount_fs(&mnt, flags, (caddr_t) &ext_args, 0, type, 0, NULL, mnttab_file_name, on_autofs);
180 }
181
182
183 static int
ext_mount(am_node * am,mntfs * mf,char * mount_type,const char * mnttab_type)184 ext_mount(am_node *am, mntfs *mf, char *mount_type,
185 const char *mnttab_type)
186 {
187 int on_autofs = mf->mf_flags & MFF_ON_AUTOFS;
188 int error;
189
190 error = mount_ext(mf->mf_mount, mf->mf_info, mf->mf_mopts, on_autofs,
191 mount_type, mnttab_type);
192 if (error) {
193 errno = error;
194 plog(XLOG_ERROR, "mount_ext: %m");
195 return error;
196 }
197
198 return 0;
199 }
200
201 static int
ext2_mount(am_node * am,mntfs * mf)202 ext2_mount(am_node *am, mntfs *mf)
203 {
204 return ext_mount(am, mf, MOUNT_TYPE_EXT2, MNTTAB_TYPE_EXT2);
205 }
206
207 static int
ext3_mount(am_node * am,mntfs * mf)208 ext3_mount(am_node *am, mntfs *mf)
209 {
210 return ext_mount(am, mf, MOUNT_TYPE_EXT3, MNTTAB_TYPE_EXT3);
211 }
212
213 static int
ext4_mount(am_node * am,mntfs * mf)214 ext4_mount(am_node *am, mntfs *mf)
215 {
216 return ext_mount(am, mf, MOUNT_TYPE_EXT4, MNTTAB_TYPE_EXT4);
217 }
218
219 static int
ext_umount(am_node * am,mntfs * mf)220 ext_umount(am_node *am, mntfs *mf)
221 {
222 int unmount_flags = (mf->mf_flags & MFF_ON_AUTOFS) ? AMU_UMOUNT_AUTOFS : 0;
223
224 return UMOUNT_FS(mf->mf_mount, mnttab_file_name, unmount_flags);
225 }
226