1 /****************************************************************************
2 ****************************************************************************
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.
10 ****************************************************************************
11 ****************************************************************************/
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)
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)
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)
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
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)
42 #define MD_DISK_FAULTY 0
43 #define MD_DISK_ACTIVE 1
44 #define MD_DISK_SYNC 2
45 #define MD_DISK_REMOVED 3
47 #define MD_DISK_WRITEMOSTLY 9
49 typedef struct mdp_device_descriptor_s {
55 __u32 reserved[MD_SB_DESCRIPTOR_WORDS - 5];
58 #define MD_SB_MAGIC 0xa92b4efc
61 #define MD_SB_ERRORS 1
63 #define MD_SB_BITMAP_PRESENT 8
65 typedef struct mdp_superblock_s {
83 __u32 gstate_creserved[MD_SB_GENERIC_CONSTANT_WORDS - 16];
105 __u64 reshape_position;
110 __u32 gstate_sreserved[MD_SB_GENERIC_STATE_WORDS - 18];
116 __u32 pstate_reserved[MD_SB_PERSONALITY_WORDS - 4];
118 mdp_disk_t disks[MD_SB_DISKS];
120 __u32 reserved[MD_SB_RESERVED_WORDS];
122 mdp_disk_t this_disk;
126 #define WriteMostly1 1
128 #define MD_FEATURE_BITMAP_OFFSET 1
129 #define MD_FEATURE_RECOVERY_OFFSET 2
130 #define MD_FEATURE_RESHAPE_ACTIVE 4
132 #define MD_FEATURE_ALL (1|2|4)