1/*	$NetBSD$	*/
2
3/*
4 * Copyright (c) 1997-2009 Erez Zadok
5 * Copyright (c) 1990 Jan-Simon Pendry
6 * Copyright (c) 1990 Imperial College of Science, Technology & Medicine
7 * Copyright (c) 1990 The Regents of the University of California.
8 * All rights reserved.
9 *
10 * This code is derived from software contributed to Berkeley by
11 * Jan-Simon Pendry at Imperial College, London.
12 *
13 * Redistribution and use in source and binary forms, with or without
14 * modification, are permitted provided that the following conditions
15 * are met:
16 * 1. Redistributions of source code must retain the above copyright
17 *    notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 *    notice, this list of conditions and the following disclaimer in the
20 *    documentation and/or other materials provided with the distribution.
21 * 3. All advertising materials mentioning features or use of this software
22 *    must display the following acknowledgment:
23 *      This product includes software developed by the University of
24 *      California, Berkeley and its contributors.
25 * 4. Neither the name of the University nor the names of its contributors
26 *    may be used to endorse or promote products derived from this software
27 *    without specific prior written permission.
28 *
29 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
30 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
31 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
32 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
33 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
34 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
35 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
36 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
37 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
38 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
39 * SUCH DAMAGE.
40 *
41 *
42 * File: am-utils/conf/mtab/mtab_bsd.c
43 *
44 */
45
46/*
47 * BSD 4.4 systems don't write their mount tables on a file.  Instead, they
48 * use a (better) system where the kernel keeps this state, and you access
49 * the mount tables via a known interface.
50 */
51
52#ifdef HAVE_CONFIG_H
53# include <config.h>
54#endif /* HAVE_CONFIG_H */
55#include <am_defs.h>
56#include <amu.h>
57
58#if __NetBSD_Version__ > 200030000
59#define statfs statvfs
60#endif
61
62static mntent_t *
63mnt_dup(struct statfs *mp)
64{
65  mntent_t *new_mp = ALLOC(mntent_t);
66  char *ty;
67
68  new_mp->mnt_fsname = strdup(mp->f_mntfromname);
69  new_mp->mnt_dir = strdup(mp->f_mntonname);
70
71#ifdef HAVE_STRUCT_STATFS_F_FSTYPENAME
72  ty = mp->f_fstypename;
73#else /* not HAVE_STRUCT_STATFS_F_FSTYPENAME */
74  switch (mp->f_type) {
75
76# if defined(MOUNT_UFS) && defined(MNTTAB_TYPE_UFS)
77  case MOUNT_UFS:
78    ty = MNTTAB_TYPE_UFS;
79    break;
80# endif /* defined(MOUNT_UFS) && defined(MNTTAB_TYPE_UFS) */
81
82# if defined(MOUNT_NFS) && defined(MNTTAB_TYPE_NFS)
83  case MOUNT_NFS:
84    ty = MNTTAB_TYPE_NFS;
85    break;
86# endif /* defined(MOUNT_NFS) && defined(MNTTAB_TYPE_NFS) */
87
88# if defined(MOUNT_MFS) && defined(MNTTAB_TYPE_MFS)
89  case MOUNT_MFS:
90    ty = MNTTAB_TYPE_MFS;
91    break;
92# endif /* defined(MOUNT_MFS) && defined(MNTTAB_TYPE_MFS) */
93
94  default:
95    ty = "unknown";
96
97    break;
98  }
99#endif /* not HAVE_STRUCT_STATFS_F_FSTYPENAME */
100
101  new_mp->mnt_type = strdup(ty);
102  new_mp->mnt_opts = strdup("unset");
103  new_mp->mnt_freq = 0;
104  new_mp->mnt_passno = 0;
105
106  return new_mp;
107}
108
109
110/*
111 * Read a mount table into memory
112 */
113mntlist *
114read_mtab(char *fs, const char *mnttabname)
115{
116  mntlist **mpp, *mhp;
117  struct statfs *mntbufp, *mntp;
118
119  int nloc = getmntinfo(&mntbufp, MNT_NOWAIT);
120
121  if (nloc == 0) {
122    plog(XLOG_ERROR, "Can't read mount table");
123    return 0;
124  }
125  mpp = &mhp;
126  for (mntp = mntbufp; mntp < mntbufp + nloc; mntp++) {
127    /*
128     * Allocate a new slot
129     */
130    *mpp = ALLOC(struct mntlist);
131
132    /*
133     * Copy the data returned by getmntent
134     */
135    (*mpp)->mnt = mnt_dup(mntp);
136
137    /*
138     * Move to next pointer
139     */
140    mpp = &(*mpp)->mnext;
141  }
142
143  /*
144   * Terminate the list
145   */
146  *mpp = NULL;
147
148  return mhp;
149}
150