Contents of /tags/mkinitrd-6_1_5/busybox/libbb/mtab.c
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Wed Aug 5 17:52:52 2009 UTC (15 years, 1 month ago) by niro
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File size: 1454 byte(s)
Wed Aug 5 17:52:52 2009 UTC (15 years, 1 month ago) by niro
File MIME type: text/plain
File size: 1454 byte(s)
tagged 'mkinitrd-6_1_5'
1 | /* vi: set sw=4 ts=4: */ |
2 | /* |
3 | * Utility routines. |
4 | * |
5 | * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org> |
6 | * |
7 | * Licensed under GPLv2 or later, see file LICENSE in this tarball for details. |
8 | */ |
9 | |
10 | #include <mntent.h> |
11 | #include "libbb.h" |
12 | |
13 | #if ENABLE_FEATURE_MTAB_SUPPORT |
14 | void FAST_FUNC erase_mtab(const char *name) |
15 | { |
16 | struct mntent *entries; |
17 | int i, count; |
18 | FILE *mountTable; |
19 | struct mntent *m; |
20 | |
21 | mountTable = setmntent(bb_path_mtab_file, "r"); |
22 | /* Bummer. Fall back on trying the /proc filesystem */ |
23 | if (!mountTable) mountTable = setmntent("/proc/mounts", "r"); |
24 | if (!mountTable) { |
25 | bb_perror_msg(bb_path_mtab_file); |
26 | return; |
27 | } |
28 | |
29 | entries = NULL; |
30 | count = 0; |
31 | while ((m = getmntent(mountTable)) != 0) { |
32 | entries = xrealloc_vector(entries, 3, count); |
33 | entries[count].mnt_fsname = xstrdup(m->mnt_fsname); |
34 | entries[count].mnt_dir = xstrdup(m->mnt_dir); |
35 | entries[count].mnt_type = xstrdup(m->mnt_type); |
36 | entries[count].mnt_opts = xstrdup(m->mnt_opts); |
37 | entries[count].mnt_freq = m->mnt_freq; |
38 | entries[count].mnt_passno = m->mnt_passno; |
39 | count++; |
40 | } |
41 | endmntent(mountTable); |
42 | |
43 | //TODO: make update atomic |
44 | mountTable = setmntent(bb_path_mtab_file, "w"); |
45 | if (mountTable) { |
46 | for (i = 0; i < count; i++) { |
47 | if (strcmp(entries[i].mnt_fsname, name) != 0 |
48 | && strcmp(entries[i].mnt_dir, name) != 0) |
49 | addmntent(mountTable, &entries[i]); |
50 | } |
51 | endmntent(mountTable); |
52 | } else if (errno != EROFS) |
53 | bb_perror_msg(bb_path_mtab_file); |
54 | } |
55 | #endif |