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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 
49 typedef 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 
65 typedef 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 
136