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/ops_lofs.c
41 * Loopback file system
46 #endif /* HAVE_CONFIG_H */
50 /* forward definitions */
51 static char *lofs_match(am_opts *fo);
52 static int lofs_mount(am_node *am, mntfs *mf);
53 static int lofs_umount(am_node *am, mntfs *mf);
65 amfs_error_lookup_child,
66 amfs_error_mount_child,
68 0, /* lofs_readlink */
70 0, /* lofs_umounted */
71 amfs_generic_find_srvr,
72 0, /* lofs_get_wchan */
73 FS_MKMNT | FS_NOTIMEOUT | FS_UBACKGROUND | FS_AMQINFO, /* nfs_fs_flags */
76 #endif /* HAVE_FS_AUTOFS */
81 * LOFS needs remote filesystem.
84 lofs_match(am_opts *fo)
87 plog(XLOG_USER, "lofs: no source filesystem specified");
90 dlog("LOFS: mounting fs \"%s\" on \"%s\"",
91 fo->opt_rfs, fo->opt_fs);
94 * Determine magic cookie to put in mtab
96 return xstrdup(fo->opt_rfs);
101 mount_lofs(char *mntdir, char *fs_name, char *opts, int on_autofs)
107 * Figure out the name of the file system type.
109 MTYPE_TYPE type = MOUNT_TYPE_LOFS;
112 * Fill in the mount structure
114 memset((voidp) &mnt, 0, sizeof(mnt));
115 mnt.mnt_dir = mntdir;
116 mnt.mnt_fsname = fs_name;
117 mnt.mnt_type = MNTTAB_TYPE_LOFS;
120 flags = compute_mount_flags(&mnt);
121 #ifdef HAVE_FS_AUTOFS
123 flags |= autofs_compute_mount_flags(&mnt);
124 #endif /* HAVE_FS_AUTOFS */
127 * Call generic mount routine
129 return mount_fs(&mnt, flags, NULL, 0, type, 0, NULL, mnttab_file_name, on_autofs);
134 lofs_mount(am_node *am, mntfs *mf)
136 int on_autofs = mf->mf_flags & MFF_ON_AUTOFS;
139 error = mount_lofs(mf->mf_mount, mf->mf_info, mf->mf_mopts, on_autofs);
142 plog(XLOG_ERROR, "mount_lofs: %m");
150 lofs_umount(am_node *am, mntfs *mf)
152 int unmount_flags = (mf->mf_flags & MFF_ON_AUTOFS) ? AMU_UMOUNT_AUTOFS : 0;
154 return UMOUNT_FS(mf->mf_mount, mnttab_file_name, unmount_flags);