2 * Copyright (c) 1997-2006 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. All advertising materials mentioning features or use of this software
20 * must display the following acknowledgment:
21 * This product includes software developed by the University of
22 * California, Berkeley and its contributors.
23 * 4. Neither the name of the University nor the names of its contributors
24 * may be used to endorse or promote products derived from this software
25 * without specific prior written permission.
27 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
28 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
29 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
30 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
31 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
32 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
33 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
34 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
35 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
36 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
40 * File: am-utils/amd/amfs_auto.c
45 * Automount file system
50 #endif /* HAVE_CONFIG_H */
54 /****************************************************************************
56 ****************************************************************************/
59 /****************************************************************************
61 ****************************************************************************/
64 /****************************************************************************
65 *** FORWARD DEFINITIONS ***
66 ****************************************************************************/
67 static int amfs_auto_mount(am_node *mp, mntfs *mf);
70 /****************************************************************************
71 *** OPS STRUCTURES ***
72 ****************************************************************************/
73 am_ops amfs_auto_ops =
77 0, /* amfs_auto_init */
80 amfs_generic_lookup_child,
81 amfs_generic_mount_child,
83 0, /* amfs_auto_readlink */
85 0, /* amfs_auto_umounted */
86 amfs_generic_find_srvr,
87 0, /* amfs_auto_get_wchan */
88 FS_AMQINFO | FS_DIRECTORY,
91 #endif /* HAVE_FS_AUTOFS */
95 /****************************************************************************
97 ****************************************************************************/
102 amfs_auto_mount(am_node *mp, mntfs *mf)
105 * Pseudo-directories are used to provide some structure
106 * to the automounted directories instead
107 * of putting them all in the top-level automount directory.
109 * Here, just increment the parent's link count.
111 mp->am_parent->am_fattr.na_nlink++;
114 * Info field of . means use parent's info field.
115 * Historical - not documented.
117 if (mf->mf_info[0] == '.' && mf->mf_info[1] == '\0')
118 mf->mf_info = strealloc(mf->mf_info, mp->am_parent->am_mnt->mf_info);
123 * If there is an option prefix then use that else
124 * If the parent had a prefix then use that with name
125 * of this node appended else
126 * Use the name of this node.
128 * That means if you want no prefix you must say so
131 if (mf->mf_fo->opt_pref) {
132 /* allow pref:=null to set a real null prefix */
133 if (STREQ(mf->mf_fo->opt_pref, "null")) {
134 mp->am_pref = strdup("");
137 * the prefix specified as an option
139 mp->am_pref = strdup(mf->mf_fo->opt_pref);
143 * else the parent's prefix
144 * followed by the name
147 char *ppref = mp->am_parent->am_pref;
150 mp->am_pref = str3cat((char *) 0, ppref, mp->am_name, "/");
153 #ifdef HAVE_FS_AUTOFS
154 if (mf->mf_flags & MFF_IS_AUTOFS) {
155 char opts[SIZEOF_OPTS];
158 autofs_get_opts(opts, sizeof(opts), mp->am_autofs_fh);
160 /* now do the mount */
161 error = amfs_mount(mp, mf, opts);
164 plog(XLOG_FATAL, "amfs_auto_mount: amfs_mount failed: %m");
168 #endif /* HAVE_FS_AUTOFS */