1 | /*
|
---|
2 | * volume_id - reads filesystem label and uuid
|
---|
3 | *
|
---|
4 | * Copyright (C) 2005 Kay Sievers <kay.sievers@vrfy.org>
|
---|
5 | *
|
---|
6 | * This library is free software; you can redistribute it and/or
|
---|
7 | * modify it under the terms of the GNU Lesser General Public
|
---|
8 | * License as published by the Free Software Foundation; either
|
---|
9 | * version 2.1 of the License, or (at your option) any later version.
|
---|
10 | *
|
---|
11 | * This library is distributed in the hope that it will be useful,
|
---|
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
|
---|
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
---|
14 | * Lesser General Public License for more details.
|
---|
15 | *
|
---|
16 | * You should have received a copy of the GNU Lesser General Public
|
---|
17 | * License along with this library; if not, write to the Free Software
|
---|
18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
---|
19 | */
|
---|
20 |
|
---|
21 | //kbuild:### lib-$(CONFIG_FEATURE_VOLUMEID_MINIX) += minix.o
|
---|
22 |
|
---|
23 | //config:
|
---|
24 | //config:### config FEATURE_VOLUMEID_MINIX
|
---|
25 | //config:### bool "minix filesystem"
|
---|
26 | //config:### default y
|
---|
27 | //config:### depends on VOLUMEID
|
---|
28 | //config:### help
|
---|
29 | //config:### TODO
|
---|
30 | //config:
|
---|
31 |
|
---|
32 | #include "volume_id_internal.h"
|
---|
33 |
|
---|
34 | struct minix_super_block {
|
---|
35 | uint16_t s_ninodes;
|
---|
36 | uint16_t s_nzones;
|
---|
37 | uint16_t s_imap_blocks;
|
---|
38 | uint16_t s_zmap_blocks;
|
---|
39 | uint16_t s_firstdatazone;
|
---|
40 | uint16_t s_log_zone_size;
|
---|
41 | uint32_t s_max_size;
|
---|
42 | uint16_t s_magic;
|
---|
43 | uint16_t s_state;
|
---|
44 | uint32_t s_zones;
|
---|
45 | } PACKED;
|
---|
46 |
|
---|
47 | #define MINIX_SUPERBLOCK_OFFSET 0x400
|
---|
48 |
|
---|
49 | int FAST_FUNC volume_id_probe_minix(struct volume_id *id, uint64_t off)
|
---|
50 | {
|
---|
51 | struct minix_super_block *ms;
|
---|
52 |
|
---|
53 | dbg("probing at offset 0x%llx", (unsigned long long) off);
|
---|
54 |
|
---|
55 | ms = volume_id_get_buffer(id, off + MINIX_SUPERBLOCK_OFFSET, 0x200);
|
---|
56 | if (ms == NULL)
|
---|
57 | return -1;
|
---|
58 |
|
---|
59 | if (ms->s_magic == cpu_to_le16(0x137f)) {
|
---|
60 | // id->type_version[0] = '1';
|
---|
61 | goto found;
|
---|
62 | }
|
---|
63 |
|
---|
64 | if (ms->s_magic == cpu_to_le16(0x1387)) {
|
---|
65 | // id->type_version[0] = '1';
|
---|
66 | goto found;
|
---|
67 | }
|
---|
68 |
|
---|
69 | if (ms->s_magic == cpu_to_le16(0x2468)) {
|
---|
70 | // id->type_version[0] = '2';
|
---|
71 | goto found;
|
---|
72 | }
|
---|
73 |
|
---|
74 | if (ms->s_magic == cpu_to_le16(0x2478)) {
|
---|
75 | // id->type_version[0] = '2';
|
---|
76 | goto found;
|
---|
77 | }
|
---|
78 |
|
---|
79 | return -1;
|
---|
80 |
|
---|
81 | found:
|
---|
82 | // id->type_version[1] = '\0';
|
---|
83 | // volume_id_set_usage(id, VOLUME_ID_FILESYSTEM);
|
---|
84 | // id->type = "minix";
|
---|
85 | return 0;
|
---|
86 | }
|
---|