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921a3d4d | 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
fa60ce2c | 2 | /* |
ccd979bd MF |
3 | * ocfs1_fs_compat.h |
4 | * | |
5 | * OCFS1 volume header definitions. OCFS2 creates valid but unmountable | |
6 | * OCFS1 volume headers on the first two sectors of an OCFS2 volume. | |
7 | * This allows an OCFS1 volume to see the partition and cleanly fail to | |
8 | * mount it. | |
9 | * | |
10 | * Copyright (C) 2002, 2004 Oracle. All rights reserved. | |
ccd979bd MF |
11 | */ |
12 | ||
13 | #ifndef _OCFS1_FS_COMPAT_H | |
14 | #define _OCFS1_FS_COMPAT_H | |
15 | ||
16 | #define OCFS1_MAX_VOL_SIGNATURE_LEN 128 | |
17 | #define OCFS1_MAX_MOUNT_POINT_LEN 128 | |
18 | #define OCFS1_MAX_VOL_ID_LENGTH 16 | |
19 | #define OCFS1_MAX_VOL_LABEL_LEN 64 | |
20 | #define OCFS1_MAX_CLUSTER_NAME_LEN 64 | |
21 | ||
22 | #define OCFS1_MAJOR_VERSION (2) | |
23 | #define OCFS1_MINOR_VERSION (0) | |
24 | #define OCFS1_VOLUME_SIGNATURE "OracleCFS" | |
25 | ||
26 | /* | |
27 | * OCFS1 superblock. Lives at sector 0. | |
28 | */ | |
29 | struct ocfs1_vol_disk_hdr | |
30 | { | |
31 | /*00*/ __u32 minor_version; | |
32 | __u32 major_version; | |
33 | /*08*/ __u8 signature[OCFS1_MAX_VOL_SIGNATURE_LEN]; | |
34 | /*88*/ __u8 mount_point[OCFS1_MAX_MOUNT_POINT_LEN]; | |
35 | /*108*/ __u64 serial_num; | |
36 | /*110*/ __u64 device_size; | |
37 | __u64 start_off; | |
38 | /*120*/ __u64 bitmap_off; | |
39 | __u64 publ_off; | |
40 | /*130*/ __u64 vote_off; | |
41 | __u64 root_bitmap_off; | |
42 | /*140*/ __u64 data_start_off; | |
43 | __u64 root_bitmap_size; | |
44 | /*150*/ __u64 root_off; | |
45 | __u64 root_size; | |
46 | /*160*/ __u64 cluster_size; | |
47 | __u64 num_nodes; | |
48 | /*170*/ __u64 num_clusters; | |
49 | __u64 dir_node_size; | |
50 | /*180*/ __u64 file_node_size; | |
51 | __u64 internal_off; | |
52 | /*190*/ __u64 node_cfg_off; | |
53 | __u64 node_cfg_size; | |
54 | /*1A0*/ __u64 new_cfg_off; | |
55 | __u32 prot_bits; | |
56 | __s32 excl_mount; | |
57 | /*1B0*/ | |
58 | }; | |
59 | ||
60 | ||
61 | struct ocfs1_disk_lock | |
62 | { | |
63 | /*00*/ __u32 curr_master; | |
64 | __u8 file_lock; | |
c78bad11 | 65 | __u8 compat_pad[3]; /* Not in original definition. Used to |
ccd979bd MF |
66 | make the already existing alignment |
67 | explicit */ | |
68 | __u64 last_write_time; | |
69 | /*10*/ __u64 last_read_time; | |
70 | __u32 writer_node_num; | |
71 | __u32 reader_node_num; | |
72 | /*20*/ __u64 oin_node_map; | |
73 | __u64 dlock_seq_num; | |
74 | /*30*/ | |
75 | }; | |
76 | ||
77 | /* | |
78 | * OCFS1 volume label. Lives at sector 1. | |
79 | */ | |
80 | struct ocfs1_vol_label | |
81 | { | |
82 | /*00*/ struct ocfs1_disk_lock disk_lock; | |
83 | /*30*/ __u8 label[OCFS1_MAX_VOL_LABEL_LEN]; | |
84 | /*70*/ __u16 label_len; | |
85 | /*72*/ __u8 vol_id[OCFS1_MAX_VOL_ID_LENGTH]; | |
86 | /*82*/ __u16 vol_id_len; | |
87 | /*84*/ __u8 cluster_name[OCFS1_MAX_CLUSTER_NAME_LEN]; | |
88 | /*A4*/ __u16 cluster_name_len; | |
89 | /*A6*/ | |
90 | }; | |
91 | ||
92 | ||
93 | #endif /* _OCFS1_FS_COMPAT_H */ | |
94 |