1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
2 | /* |
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. |
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; |
65 | __u8 compat_pad[3]; /* Not in original definition. Used to |
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 | |
95 | |