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review.evervolv.com / android_bionic / 1dc9e472e19acfe6dc7f41e429236e7eef7ceda1 / . / libc / kernel / common / linux / raid / md_p.h
blob: ab856a73821f7691858ac1880973e37f0e405bd6 [file] [log] [blame]
The Android Open Source Project1dc9e472009-03-03 19:28:35 -0800[diff] [blame^]1/****************************************************************************
2 ****************************************************************************
3 ***
4 *** This header was automatically generated from a Linux kernel header
5 *** of the same name, to make information necessary for userspace to
6 *** call into the kernel available to libc. It contains only constants,
7 *** structures, and macros generated from the original header, and thus,
8 *** contains no copyrightable information.
9 ***
10 ****************************************************************************
11 ****************************************************************************/
12#ifndef _MD_P_H
13#define _MD_P_H
14
15#define MD_RESERVED_BYTES (64 * 1024)
16#define MD_RESERVED_SECTORS (MD_RESERVED_BYTES / 512)
17#define MD_RESERVED_BLOCKS (MD_RESERVED_BYTES / BLOCK_SIZE)
18
19#define MD_NEW_SIZE_SECTORS(x) ((x & ~(MD_RESERVED_SECTORS - 1)) - MD_RESERVED_SECTORS)
20#define MD_NEW_SIZE_BLOCKS(x) ((x & ~(MD_RESERVED_BLOCKS - 1)) - MD_RESERVED_BLOCKS)
21
22#define MD_SB_BYTES 4096
23#define MD_SB_WORDS (MD_SB_BYTES / 4)
24#define MD_SB_BLOCKS (MD_SB_BYTES / BLOCK_SIZE)
25#define MD_SB_SECTORS (MD_SB_BYTES / 512)
26
27#define MD_SB_GENERIC_OFFSET 0
28#define MD_SB_PERSONALITY_OFFSET 64
29#define MD_SB_DISKS_OFFSET 128
30#define MD_SB_DESCRIPTOR_OFFSET 992
31
32#define MD_SB_GENERIC_CONSTANT_WORDS 32
33#define MD_SB_GENERIC_STATE_WORDS 32
34#define MD_SB_GENERIC_WORDS (MD_SB_GENERIC_CONSTANT_WORDS + MD_SB_GENERIC_STATE_WORDS)
35#define MD_SB_PERSONALITY_WORDS 64
36#define MD_SB_DESCRIPTOR_WORDS 32
37#define MD_SB_DISKS 27
38#define MD_SB_DISKS_WORDS (MD_SB_DISKS*MD_SB_DESCRIPTOR_WORDS)
39#define MD_SB_RESERVED_WORDS (1024 - MD_SB_GENERIC_WORDS - MD_SB_PERSONALITY_WORDS - MD_SB_DISKS_WORDS - MD_SB_DESCRIPTOR_WORDS)
40#define MD_SB_EQUAL_WORDS (MD_SB_GENERIC_WORDS + MD_SB_PERSONALITY_WORDS + MD_SB_DISKS_WORDS)
41
42#define MD_DISK_FAULTY 0
43#define MD_DISK_ACTIVE 1
44#define MD_DISK_SYNC 2
45#define MD_DISK_REMOVED 3
46
47#define MD_DISK_WRITEMOSTLY 9
48
49typedef struct mdp_device_descriptor_s {
50 __u32 number;
51 __u32 major;
52 __u32 minor;
53 __u32 raid_disk;
54 __u32 state;
55 __u32 reserved[MD_SB_DESCRIPTOR_WORDS - 5];
56} mdp_disk_t;
57
58#define MD_SB_MAGIC 0xa92b4efc
59
60#define MD_SB_CLEAN 0
61#define MD_SB_ERRORS 1
62
63#define MD_SB_BITMAP_PRESENT 8
64
65typedef struct mdp_superblock_s {
66
67 __u32 md_magic;
68 __u32 major_version;
69 __u32 minor_version;
70 __u32 patch_version;
71 __u32 gvalid_words;
72 __u32 set_uuid0;
73 __u32 ctime;
74 __u32 level;
75 __u32 size;
76 __u32 nr_disks;
77 __u32 raid_disks;
78 __u32 md_minor;
79 __u32 not_persistent;
80 __u32 set_uuid1;
81 __u32 set_uuid2;
82 __u32 set_uuid3;
83 __u32 gstate_creserved[MD_SB_GENERIC_CONSTANT_WORDS - 16];
84
85 __u32 utime;
86 __u32 state;
87 __u32 active_disks;
88 __u32 working_disks;
89 __u32 failed_disks;
90 __u32 spare_disks;
91 __u32 sb_csum;
92#ifdef __BIG_ENDIAN
93 __u32 events_hi;
94 __u32 events_lo;
95 __u32 cp_events_hi;
96 __u32 cp_events_lo;
97#else
98 __u32 events_lo;
99 __u32 events_hi;
100 __u32 cp_events_lo;
101 __u32 cp_events_hi;
102#endif
103 __u32 recovery_cp;
104
105 __u64 reshape_position;
106 __u32 new_level;
107 __u32 delta_disks;
108 __u32 new_layout;
109 __u32 new_chunk;
110 __u32 gstate_sreserved[MD_SB_GENERIC_STATE_WORDS - 18];
111
112 __u32 layout;
113 __u32 chunk_size;
114 __u32 root_pv;
115 __u32 root_block;
116 __u32 pstate_reserved[MD_SB_PERSONALITY_WORDS - 4];
117
118 mdp_disk_t disks[MD_SB_DISKS];
119
120 __u32 reserved[MD_SB_RESERVED_WORDS];
121
122 mdp_disk_t this_disk;
123
124} mdp_super_t;
125
126#define WriteMostly1 1
127
128#define MD_FEATURE_BITMAP_OFFSET 1
129#define MD_FEATURE_RECOVERY_OFFSET 2
130#define MD_FEATURE_RESHAPE_ACTIVE 4
131
132#define MD_FEATURE_ALL (1|2|4)
133
134#endif
135