ops_pcfs.c revision 119679 
1/*
2 * Copyright (c) 1997-2003 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. 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.
26 *
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
37 * SUCH DAMAGE.
38 *
39 *      %W% (Berkeley) %G%
40 *
41 * $Id: ops_pcfs.c,v 1.3.2.4 2002/12/27 22:44:42 ezk Exp $
42 *
43 */
44
45/*
46 * PC (MS-DOS) file system
47 */
48
49#ifdef HAVE_CONFIG_H
50# include <config.h>
51#endif /* HAVE_CONFIG_H */
52#include <am_defs.h>
53#include <amd.h>
54
55/* forward definitions */
56static char *pcfs_match(am_opts *fo);
57static int pcfs_fmount(mntfs *mf);
58static int pcfs_fumount(mntfs *mf);
59
60/*
61 * Ops structure
62 */
63am_ops pcfs_ops =
64{
65  "pcfs",
66  pcfs_match,
67  0,				/* pcfs_init */
68  amfs_auto_fmount,
69  pcfs_fmount,
70  amfs_auto_fumount,
71  pcfs_fumount,
72  amfs_error_lookuppn,
73  amfs_error_readdir,
74  0,				/* pcfs_readlink */
75  0,				/* pcfs_mounted */
76  0,				/* pcfs_umounted */
77  find_amfs_auto_srvr,
78  FS_MKMNT | FS_UBACKGROUND | FS_AMQINFO
79};
80
81
82
83/*
84 * PCFS needs remote filesystem.
85 */
86static char *
87pcfs_match(am_opts *fo)
88{
89  if (!fo->opt_dev) {
90    plog(XLOG_USER, "pcfs: no source device specified");
91    return 0;
92  }
93#ifdef DEBUG
94  dlog("PCFS: mounting device \"%s\" on \"%s\"", fo->opt_dev, fo->opt_fs);
95#endif /* DEBUG */
96
97  /*
98   * Determine magic cookie to put in mtab
99   */
100  return strdup(fo->opt_dev);
101}
102
103
104static int
105mount_pcfs(char *dir, char *fs_name, char *opts)
106{
107  pcfs_args_t pcfs_args;
108  mntent_t mnt;
109  int flags;
110
111  /*
112   * Figure out the name of the file system type.
113   */
114  MTYPE_TYPE type = MOUNT_TYPE_PCFS;
115
116  memset((voidp) &pcfs_args, 0, sizeof(pcfs_args)); /* Paranoid */
117
118  /*
119   * Fill in the mount structure
120   */
121  memset((voidp) &mnt, 0, sizeof(mnt));
122  mnt.mnt_dir = dir;
123  mnt.mnt_fsname = fs_name;
124  mnt.mnt_type = MNTTAB_TYPE_PCFS;
125  mnt.mnt_opts = opts;
126
127  flags = compute_mount_flags(&mnt);
128
129#ifdef HAVE_PCFS_ARGS_T_FSPEC
130  pcfs_args.fspec = fs_name;
131#endif /* HAVE_PCFS_ARGS_T_FSPEC */
132
133#ifdef HAVE_PCFS_ARGS_T_MASK
134  pcfs_args.mask = 0777;	/* this may be the msdos file modes */
135#endif /* HAVE_PCFS_ARGS_T_MASK */
136
137#ifdef HAVE_PCFS_ARGS_T_UID
138  pcfs_args.uid = 0;		/* root */
139#endif /* HAVE_PCFS_ARGS_T_UID */
140
141#ifdef HAVE_PCFS_ARGS_T_GID
142  pcfs_args.gid = 0;		/* wheel */
143#endif /* HAVE_PCFS_ARGS_T_GID */
144
145#ifdef HAVE_PCFS_ARGS_T_SECONDSWEST
146  pcfs_args.secondswest = 0;	/* XXX: fill in correct values */
147#endif /* HAVE_PCFS_ARGS_T_SECONDSWEST */
148#ifdef HAVE_PCFS_ARGS_T_DSTTIME
149  pcfs_args.dsttime = 0;	/* XXX: fill in correct values */
150#endif /* HAVE_PCFS_ARGS_T_DSTTIME */
151
152  /*
153   * Call generic mount routine
154   */
155  return mount_fs(&mnt, flags, (caddr_t) & pcfs_args, 0, type, 0, NULL, mnttab_file_name);
156}
157
158
159static int
160pcfs_fmount(mntfs *mf)
161{
162  int error;
163
164  error = mount_pcfs(mf->mf_mount, mf->mf_info, mf->mf_mopts);
165  if (error) {
166    errno = error;
167    plog(XLOG_ERROR, "mount_pcfs: %m");
168    return error;
169  }
170
171  return 0;
172}
173
174
175static int
176pcfs_fumount(mntfs *mf)
177{
178  return UMOUNT_FS(mf->mf_mount, mnttab_file_name);
179}
180