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.
8 * This code is derived from software contributed to Berkeley by
9 * Jan-Simon Pendry at Imperial College, London.
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
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.
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
36 * File: am-utils/amd/amfs_auto.c
41 * Automount file system
46 #endif /* HAVE_CONFIG_H */
50 /****************************************************************************
52 ****************************************************************************/
55 /****************************************************************************
57 ****************************************************************************/
60 /****************************************************************************
61 *** FORWARD DEFINITIONS ***
62 ****************************************************************************/
63 static int amfs_auto_mount(am_node *mp, mntfs *mf);
66 /****************************************************************************
67 *** OPS STRUCTURES ***
68 ****************************************************************************/
69 am_ops amfs_auto_ops =
73 0, /* amfs_auto_init */
76 amfs_generic_lookup_child,
77 amfs_generic_mount_child,
79 0, /* amfs_auto_readlink */
81 0, /* amfs_auto_umounted */
82 amfs_generic_find_srvr,
83 0, /* amfs_auto_get_wchan */
84 FS_AMQINFO | FS_DIRECTORY,
87 #endif /* HAVE_FS_AUTOFS */
91 /****************************************************************************
93 ****************************************************************************/
98 amfs_auto_mount(am_node *mp, mntfs *mf)
100 if (mp->am_parent == NULL)
103 * Pseudo-directories are used to provide some structure
104 * to the automounted directories instead
105 * of putting them all in the top-level automount directory.
107 * Here, just increment the parent's link count.
109 mp->am_parent->am_fattr.na_nlink++;
112 * Info field of . means use parent's info field.
113 * Historical - not documented.
115 if (mf->mf_info[0] == '.' && mf->mf_info[1] == '\0')
116 mf->mf_info = strealloc(mf->mf_info, mp->am_parent->am_al->al_mnt->mf_info);
121 * If there is an option prefix then use that else
122 * If the parent had a prefix then use that with name
123 * of this node appended else
124 * Use the name of this node.
126 * That means if you want no prefix you must say so
129 if (mf->mf_fo->opt_pref) {
130 /* allow pref:=null to set a real null prefix */
131 if (STREQ(mf->mf_fo->opt_pref, "null")) {
132 mp->am_pref = xstrdup("");
135 * the prefix specified as an option
137 mp->am_pref = xstrdup(mf->mf_fo->opt_pref);
141 * else the parent's prefix
142 * followed by the name
145 char *ppref = mp->am_parent->am_pref;
148 mp->am_pref = str3cat((char *) NULL, ppref, mp->am_name, "/");
151 #ifdef HAVE_FS_AUTOFS
152 if (mf->mf_flags & MFF_IS_AUTOFS) {
153 char opts[SIZEOF_OPTS];
156 autofs_get_opts(opts, sizeof(opts), mp->am_autofs_fh);
158 /* now do the mount */
159 error = amfs_mount(mp, mf, opts);
162 plog(XLOG_FATAL, "amfs_auto_mount: amfs_mount failed: %m");
166 #endif /* HAVE_FS_AUTOFS */