1/* $NetBSD: mtab_bsd.c,v 1.1.1.3 2015/01/17 16:34:16 christos Exp $ */
2
3/*
4 * Copyright (c) 1997-2014 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. Neither the name of the University nor the names of its contributors
22 * may be used to endorse or promote products derived from this software
23 * without specific prior written permission.
24 *
25 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
28 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35 * SUCH DAMAGE.
36 *
37 *
38 * File: am-utils/conf/mtab/mtab_bsd.c
39 *
40 */
41
42/*
43 * BSD 4.4 systems don't write their mount tables on a file. Instead, they
44 * use a (better) system where the kernel keeps this state, and you access
45 * the mount tables via a known interface.
46 */
47
48#ifdef HAVE_CONFIG_H
49# include <config.h>
50#endif /* HAVE_CONFIG_H */
51#include <am_defs.h>
52#include <amu.h>
53
54#if __NetBSD_Version__ > 200030000
55#define statfs statvfs
56#endif
57
58static mntent_t *
59mnt_dup(struct statfs *mp)
60{
61 mntent_t *new_mp = ALLOC(mntent_t);
62 char *ty;
63
64 new_mp->mnt_fsname = xstrdup(mp->f_mntfromname);
65 new_mp->mnt_dir = xstrdup(mp->f_mntonname);
66
67#ifdef HAVE_STRUCT_STATFS_F_FSTYPENAME
68 ty = mp->f_fstypename;
69#else /* not HAVE_STRUCT_STATFS_F_FSTYPENAME */
70 switch (mp->f_type) {
71
72# if defined(MOUNT_UFS) && defined(MNTTAB_TYPE_UFS)
73 case MOUNT_UFS:
74 ty = MNTTAB_TYPE_UFS;
75 break;
76# endif /* defined(MOUNT_UFS) && defined(MNTTAB_TYPE_UFS) */
77
78# if defined(MOUNT_NFS) && defined(MNTTAB_TYPE_NFS)
79 case MOUNT_NFS:
80 ty = MNTTAB_TYPE_NFS;
81 break;
82# endif /* defined(MOUNT_NFS) && defined(MNTTAB_TYPE_NFS) */
83
84# if defined(MOUNT_MFS) && defined(MNTTAB_TYPE_MFS)
85 case MOUNT_MFS:
86 ty = MNTTAB_TYPE_MFS;
87 break;
88# endif /* defined(MOUNT_MFS) && defined(MNTTAB_TYPE_MFS) */
89
90 default:
91 ty = "unknown";
92
93 break;
94 }
95#endif /* not HAVE_STRUCT_STATFS_F_FSTYPENAME */
96
97 new_mp->mnt_type = xstrdup(ty);
98 new_mp->mnt_opts = xstrdup("unset");
99 new_mp->mnt_freq = 0;
100 new_mp->mnt_passno = 0;
101
102 return new_mp;
103}
104
105
106/*
107 * Read a mount table into memory
108 */
109mntlist *
110read_mtab(char *fs, const char *mnttabname)
111{
112 mntlist **mpp, *mhp;
113 struct statfs *mntbufp, *mntp;
114
115 int nloc = getmntinfo(&mntbufp, MNT_NOWAIT);
116
117 if (nloc == 0) {
118 plog(XLOG_ERROR, "Can't read mount table");
119 return 0;
120 }
121 mpp = &mhp;
122 for (mntp = mntbufp; mntp < mntbufp + nloc; mntp++) {
123 /*
124 * Allocate a new slot
125 */
126 *mpp = ALLOC(struct mntlist);
127
128 /*
129 * Copy the data returned by getmntent
130 */
131 (*mpp)->mnt = mnt_dup(mntp);
132
133 /*
134 * Move to next pointer
135 */
136 mpp = &(*mpp)->mnext;
137 }
138
139 /*
140 * Terminate the list
141 */
142 *mpp = NULL;
143
144 return mhp;
145}
146