1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
|
/*
* volume_id - reads filesystem label and uuid
*
* Copyright (C) 2004 Andre Masella <andre@masella.no-ip.org>
* Copyright (C) 2005 Kay Sievers <kay.sievers@vrfy.org>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef _GNU_SOURCE
#define _GNU_SOURCE 1
#endif
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <errno.h>
#include <ctype.h>
#include "libvolume_id.h"
#include "libvolume_id-private.h"
struct ocfs1_super_block_header {
uint32_t minor_version;
uint32_t major_version;
uint8_t signature[128];
uint8_t mount_point[128];
uint64_t serial_num;
uint64_t device_size;
uint64_t start_off;
uint64_t bitmap_off;
uint64_t publ_off;
uint64_t vote_off;
uint64_t root_bitmap_off;
uint64_t data_start_off;
uint64_t root_bitmap_size;
uint64_t root_off;
uint64_t root_size;
uint64_t cluster_size;
uint64_t num_nodes;
uint64_t num_clusters;
uint64_t dir_node_size;
uint64_t file_node_size;
uint64_t internal_off;
uint64_t node_cfg_off;
uint64_t node_cfg_size;
uint64_t new_cfg_off;
uint32_t prot_bits;
int32_t excl_mount;
} PACKED;
struct ocfs1_super_block_label {
struct ocfs1_disk_lock {
uint32_t curr_master;
uint8_t file_lock;
uint8_t compat_pad[3];
uint64_t last_write_time;
uint64_t last_read_time;
uint32_t writer_node_num;
uint32_t reader_node_num;
uint64_t oin_node_map;
uint64_t dlock_seq_num;
} PACKED disk_lock;
uint8_t label[64];
uint16_t label_len;
uint8_t vol_id[16];
uint16_t vol_id_len;
uint8_t cluster_name[64];
uint16_t cluster_name_len;
} PACKED;
struct ocfs2_super_block {
uint8_t i_signature[8];
uint32_t i_generation;
int16_t i_suballoc_slot;
uint16_t i_suballoc_bit;
uint32_t i_reserved0;
uint32_t i_clusters;
uint32_t i_uid;
uint32_t i_gid;
uint64_t i_size;
uint16_t i_mode;
uint16_t i_links_count;
uint32_t i_flags;
uint64_t i_atime;
uint64_t i_ctime;
uint64_t i_mtime;
uint64_t i_dtime;
uint64_t i_blkno;
uint64_t i_last_eb_blk;
uint32_t i_fs_generation;
uint32_t i_atime_nsec;
uint32_t i_ctime_nsec;
uint32_t i_mtime_nsec;
uint64_t i_reserved1[9];
uint64_t i_pad1;
uint16_t s_major_rev_level;
uint16_t s_minor_rev_level;
uint16_t s_mnt_count;
int16_t s_max_mnt_count;
uint16_t s_state;
uint16_t s_errors;
uint32_t s_checkinterval;
uint64_t s_lastcheck;
uint32_t s_creator_os;
uint32_t s_feature_compat;
uint32_t s_feature_incompat;
uint32_t s_feature_ro_compat;
uint64_t s_root_blkno;
uint64_t s_system_dir_blkno;
uint32_t s_blocksize_bits;
uint32_t s_clustersize_bits;
uint16_t s_max_slots;
uint16_t s_reserved1;
uint32_t s_reserved2;
uint64_t s_first_cluster_group;
uint8_t s_label[64];
uint8_t s_uuid[16];
} PACKED;
int volume_id_probe_ocfs1(struct volume_id *id, uint64_t off, uint64_t size)
{
const uint8_t *buf;
struct ocfs1_super_block_header *osh;
struct ocfs1_super_block_label *osl;
info("probing at offset 0x%llx\n", (unsigned long long) off);
buf = volume_id_get_buffer(id, off, 0x200);
if (buf == NULL)
return -1;
osh = (struct ocfs1_super_block_header *) buf;
if (memcmp(osh->signature, "OracleCFS", 9) != 0)
return -1;
snprintf(id->type_version, sizeof(id->type_version)-1,
"%u.%u", osh->major_version, osh->minor_version);
dbg("found OracleCFS signature, now reading label\n");
buf = volume_id_get_buffer(id, off + 0x200, 0x200);
if (buf == NULL)
return -1;
osl = (struct ocfs1_super_block_label *) buf;
volume_id_set_usage(id, VOLUME_ID_FILESYSTEM);
if (osl->label_len <= 64) {
volume_id_set_label_raw(id, osl->label, 64);
volume_id_set_label_string(id, osl->label, 64);
}
if (osl->vol_id_len == 16)
volume_id_set_uuid(id, osl->vol_id, 0, UUID_DCE);
id->type = "ocfs";
return 0;
}
#define OCFS2_MAX_BLOCKSIZE 0x1000
#define OCFS2_SUPER_BLOCK_BLKNO 2
int volume_id_probe_ocfs2(struct volume_id *id, uint64_t off, uint64_t size)
{
const uint8_t *buf;
struct ocfs2_super_block *os;
size_t blksize;
info("probing at offset 0x%llx\n", (unsigned long long) off);
for (blksize = 0x200; blksize <= OCFS2_MAX_BLOCKSIZE; blksize <<= 1) {
buf = volume_id_get_buffer(id, off + OCFS2_SUPER_BLOCK_BLKNO * blksize, 0x200);
if (buf == NULL)
return -1;
os = (struct ocfs2_super_block *) buf;
if (memcmp(os->i_signature, "OCFSV2", 6) != 0)
continue;
volume_id_set_usage(id, VOLUME_ID_FILESYSTEM);
volume_id_set_label_raw(id, os->s_label, 64);
volume_id_set_label_string(id, os->s_label, 64);
volume_id_set_uuid(id, os->s_uuid, 0, UUID_DCE);
snprintf(id->type_version, sizeof(id->type_version)-1,
"%u.%u", os->s_major_rev_level, os->s_minor_rev_level);
id->type = "ocfs2";
return 0;
}
return -1;
}
|
