ops_ufs.c revision 38494 
1/*
2 * Copyright (c) 1997-1998 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 acknowledgement:
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_ufs.c,v 5.2.2.1 1992/02/09 15:09:08 jsp beta $
42 *
43 */
44
45/*
46 * UN*X 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 declarations */
56static char *ufs_match(am_opts *fo);
57static int ufs_fmount(mntfs *mf);
58static int ufs_fumount(mntfs *mf);
59
60/*
61 * Ops structure
62 */
63am_ops ufs_ops =
64{
65  "ufs",
66  ufs_match,
67  0,				/* ufs_init */
68  amfs_auto_fmount,
69  ufs_fmount,
70  amfs_auto_fumount,
71  ufs_fumount,
72  amfs_error_lookuppn,
73  amfs_error_readdir,
74  0,				/* ufs_readlink */
75  0,				/* ufs_mounted */
76  0,				/* ufs_umounted */
77  find_amfs_auto_srvr,
78  FS_MKMNT | FS_NOTIMEOUT | FS_UBACKGROUND | FS_AMQINFO
79};
80
81
82/*
83 * UFS needs local filesystem and device.
84 */
85static char *
86ufs_match(am_opts *fo)
87{
88
89  if (!fo->opt_dev) {
90    plog(XLOG_USER, "ufs: no device specified");
91    return 0;
92  }
93
94#ifdef DEBUG
95  dlog("UFS: mounting device \"%s\" on \"%s\"", fo->opt_dev, fo->opt_fs);
96#endif /* DEBUG */
97
98  /*
99   * Determine magic cookie to put in mtab
100   */
101  return strdup(fo->opt_dev);
102}
103
104
105static int
106mount_ufs(char *dir, char *fs_name, char *opts)
107{
108  ufs_args_t ufs_args;
109  mntent_t mnt;
110  int genflags;
111
112  /*
113   * Figure out the name of the file system type.
114   */
115  MTYPE_TYPE type = MOUNT_TYPE_UFS;
116
117  memset((voidp) &ufs_args, 0, sizeof(ufs_args)); /* Paranoid */
118
119  /*
120   * Fill in the mount structure
121   */
122  memset((voidp) &mnt, 0, sizeof(mnt));
123  mnt.mnt_dir = dir;
124  mnt.mnt_fsname = fs_name;
125  mnt.mnt_type = MNTTAB_TYPE_UFS;
126  mnt.mnt_opts = opts;
127
128  genflags = compute_mount_flags(&mnt);
129
130#ifdef HAVE_FIELD_UFS_ARGS_T_FLAGS
131  ufs_args.flags = genflags;	/* XXX: is this correct? */
132#endif /* HAVE_FIELD_UFS_ARGS_T_FLAGS */
133
134#ifdef HAVE_FIELD_UFS_ARGS_T_UFS_FLAGS
135  ufs_args.ufs_flags = genflags; /* XXX: is this correct? */
136#endif /* HAVE_FIELD_UFS_ARGS_T_UFS_FLAGS */
137
138#ifdef HAVE_FIELD_UFS_ARGS_T_FSPEC
139  ufs_args.fspec = fs_name;
140#endif /* HAVE_FIELD_UFS_ARGS_T_FSPEC */
141
142#ifdef HAVE_FIELD_UFS_ARGS_T_UFS_PGTHRESH
143  ufs_args.ufs_pgthresh = hasmntval(&mnt, MNTTAB_OPT_PGTHRESH);
144#endif /* HAVE_FIELD_UFS_ARGS_T_UFS_PGTHRESH */
145
146  /*
147   * Call generic mount routine
148   */
149  return mount_fs(&mnt, genflags, (caddr_t) &ufs_args, 0, type, 0, NULL, mnttab_file_name);
150}
151
152
153static int
154ufs_fmount(mntfs *mf)
155{
156  int error;
157
158  error = mount_ufs(mf->mf_mount, mf->mf_info, mf->mf_mopts);
159  if (error) {
160    errno = error;
161    plog(XLOG_ERROR, "mount_ufs: %m");
162    return error;
163  }
164
165  return 0;
166}
167
168
169static int
170ufs_fumount(mntfs *mf)
171{
172  return UMOUNT_FS(mf->mf_mount, mnttab_file_name);
173}
174