1 /* 2 * This file is auto-generated. Modifications will be lost. 3 * 4 * See https://android.googlesource.com/platform/bionic/+/master/libc/kernel/ 5 * for more information. 6 */ 7 #ifndef _MD_P_H 8 #define _MD_P_H 9 #include <linux/types.h> 10 #include <asm/byteorder.h> 11 #define MD_RESERVED_BYTES (64 * 1024) 12 #define MD_RESERVED_SECTORS (MD_RESERVED_BYTES / 512) 13 #define MD_NEW_SIZE_SECTORS(x) ((x & ~(MD_RESERVED_SECTORS - 1)) - MD_RESERVED_SECTORS) 14 #define MD_SB_BYTES 4096 15 #define MD_SB_WORDS (MD_SB_BYTES / 4) 16 #define MD_SB_SECTORS (MD_SB_BYTES / 512) 17 #define MD_SB_GENERIC_OFFSET 0 18 #define MD_SB_PERSONALITY_OFFSET 64 19 #define MD_SB_DISKS_OFFSET 128 20 #define MD_SB_DESCRIPTOR_OFFSET 992 21 #define MD_SB_GENERIC_CONSTANT_WORDS 32 22 #define MD_SB_GENERIC_STATE_WORDS 32 23 #define MD_SB_GENERIC_WORDS (MD_SB_GENERIC_CONSTANT_WORDS + MD_SB_GENERIC_STATE_WORDS) 24 #define MD_SB_PERSONALITY_WORDS 64 25 #define MD_SB_DESCRIPTOR_WORDS 32 26 #define MD_SB_DISKS 27 27 #define MD_SB_DISKS_WORDS (MD_SB_DISKS * MD_SB_DESCRIPTOR_WORDS) 28 #define MD_SB_RESERVED_WORDS (1024 - MD_SB_GENERIC_WORDS - MD_SB_PERSONALITY_WORDS - MD_SB_DISKS_WORDS - MD_SB_DESCRIPTOR_WORDS) 29 #define MD_SB_EQUAL_WORDS (MD_SB_GENERIC_WORDS + MD_SB_PERSONALITY_WORDS + MD_SB_DISKS_WORDS) 30 #define MD_DISK_FAULTY 0 31 #define MD_DISK_ACTIVE 1 32 #define MD_DISK_SYNC 2 33 #define MD_DISK_REMOVED 3 34 #define MD_DISK_CLUSTER_ADD 4 35 #define MD_DISK_CANDIDATE 5 36 #define MD_DISK_FAILFAST 10 37 #define MD_DISK_WRITEMOSTLY 9 38 #define MD_DISK_JOURNAL 18 39 #define MD_DISK_ROLE_SPARE 0xffff 40 #define MD_DISK_ROLE_FAULTY 0xfffe 41 #define MD_DISK_ROLE_JOURNAL 0xfffd 42 #define MD_DISK_ROLE_MAX 0xff00 43 typedef struct mdp_device_descriptor_s { 44 __u32 number; 45 __u32 major; 46 __u32 minor; 47 __u32 raid_disk; 48 __u32 state; 49 __u32 reserved[MD_SB_DESCRIPTOR_WORDS - 5]; 50 } mdp_disk_t; 51 #define MD_SB_MAGIC 0xa92b4efc 52 #define MD_SB_CLEAN 0 53 #define MD_SB_ERRORS 1 54 #define MD_SB_CLUSTERED 5 55 #define MD_SB_BITMAP_PRESENT 8 56 typedef struct mdp_superblock_s { 57 __u32 md_magic; 58 __u32 major_version; 59 __u32 minor_version; 60 __u32 patch_version; 61 __u32 gvalid_words; 62 __u32 set_uuid0; 63 __u32 ctime; 64 __u32 level; 65 __u32 size; 66 __u32 nr_disks; 67 __u32 raid_disks; 68 __u32 md_minor; 69 __u32 not_persistent; 70 __u32 set_uuid1; 71 __u32 set_uuid2; 72 __u32 set_uuid3; 73 __u32 gstate_creserved[MD_SB_GENERIC_CONSTANT_WORDS - 16]; 74 __u32 utime; 75 __u32 state; 76 __u32 active_disks; 77 __u32 working_disks; 78 __u32 failed_disks; 79 __u32 spare_disks; 80 __u32 sb_csum; 81 #if defined(__BYTE_ORDER) ? __BYTE_ORDER == __BIG_ENDIAN : defined(__BIG_ENDIAN) 82 __u32 events_hi; 83 __u32 events_lo; 84 __u32 cp_events_hi; 85 __u32 cp_events_lo; 86 #elif defined(__BYTE_ORDER)?__BYTE_ORDER==__LITTLE_ENDIAN:defined(__LITTLE_ENDIAN) 87 __u32 events_lo; 88 __u32 events_hi; 89 __u32 cp_events_lo; 90 __u32 cp_events_hi; 91 #else 92 #error unspecified endianness 93 #endif 94 __u32 recovery_cp; 95 __u64 reshape_position; 96 __u32 new_level; 97 __u32 delta_disks; 98 __u32 new_layout; 99 __u32 new_chunk; 100 __u32 gstate_sreserved[MD_SB_GENERIC_STATE_WORDS - 18]; 101 __u32 layout; 102 __u32 chunk_size; 103 __u32 root_pv; 104 __u32 root_block; 105 __u32 pstate_reserved[MD_SB_PERSONALITY_WORDS - 4]; 106 mdp_disk_t disks[MD_SB_DISKS]; 107 __u32 reserved[MD_SB_RESERVED_WORDS]; 108 mdp_disk_t this_disk; 109 } mdp_super_t; 110 #define MD_SUPERBLOCK_1_TIME_SEC_MASK ((1ULL << 40) - 1) 111 struct mdp_superblock_1 { 112 __le32 magic; 113 __le32 major_version; 114 __le32 feature_map; 115 __le32 pad0; 116 __u8 set_uuid[16]; 117 char set_name[32]; 118 __le64 ctime; 119 __le32 level; 120 __le32 layout; 121 __le64 size; 122 __le32 chunksize; 123 __le32 raid_disks; 124 union { 125 __le32 bitmap_offset; 126 struct { 127 __le16 offset; 128 __le16 size; 129 } ppl; 130 }; 131 __le32 new_level; 132 __le64 reshape_position; 133 __le32 delta_disks; 134 __le32 new_layout; 135 __le32 new_chunk; 136 __le32 new_offset; 137 __le64 data_offset; 138 __le64 data_size; 139 __le64 super_offset; 140 union { 141 __le64 recovery_offset; 142 __le64 journal_tail; 143 }; 144 __le32 dev_number; 145 __le32 cnt_corrected_read; 146 __u8 device_uuid[16]; 147 __u8 devflags; 148 #define WriteMostly1 1 149 #define FailFast1 2 150 __u8 bblog_shift; 151 __le16 bblog_size; 152 __le32 bblog_offset; 153 __le64 utime; 154 __le64 events; 155 __le64 resync_offset; 156 __le32 sb_csum; 157 __le32 max_dev; 158 __u8 pad3[64 - 32]; 159 __le16 dev_roles[]; 160 }; 161 #define MD_FEATURE_BITMAP_OFFSET 1 162 #define MD_FEATURE_RECOVERY_OFFSET 2 163 #define MD_FEATURE_RESHAPE_ACTIVE 4 164 #define MD_FEATURE_BAD_BLOCKS 8 165 #define MD_FEATURE_REPLACEMENT 16 166 #define MD_FEATURE_RESHAPE_BACKWARDS 32 167 #define MD_FEATURE_NEW_OFFSET 64 168 #define MD_FEATURE_RECOVERY_BITMAP 128 169 #define MD_FEATURE_CLUSTERED 256 170 #define MD_FEATURE_JOURNAL 512 171 #define MD_FEATURE_PPL 1024 172 #define MD_FEATURE_MULTIPLE_PPLS 2048 173 #define MD_FEATURE_RAID0_LAYOUT 4096 174 #define MD_FEATURE_ALL (MD_FEATURE_BITMAP_OFFSET | MD_FEATURE_RECOVERY_OFFSET | MD_FEATURE_RESHAPE_ACTIVE | MD_FEATURE_BAD_BLOCKS | MD_FEATURE_REPLACEMENT | MD_FEATURE_RESHAPE_BACKWARDS | MD_FEATURE_NEW_OFFSET | MD_FEATURE_RECOVERY_BITMAP | MD_FEATURE_CLUSTERED | MD_FEATURE_JOURNAL | MD_FEATURE_PPL | MD_FEATURE_MULTIPLE_PPLS | MD_FEATURE_RAID0_LAYOUT) 175 struct r5l_payload_header { 176 __le16 type; 177 __le16 flags; 178 } __attribute__((__packed__)); 179 enum r5l_payload_type { 180 R5LOG_PAYLOAD_DATA = 0, 181 R5LOG_PAYLOAD_PARITY = 1, 182 R5LOG_PAYLOAD_FLUSH = 2, 183 }; 184 struct r5l_payload_data_parity { 185 struct r5l_payload_header header; 186 __le32 size; 187 __le64 location; 188 __le32 checksum[]; 189 } __attribute__((__packed__)); 190 enum r5l_payload_data_parity_flag { 191 R5LOG_PAYLOAD_FLAG_DISCARD = 1, 192 R5LOG_PAYLOAD_FLAG_RESHAPED = 2, 193 R5LOG_PAYLOAD_FLAG_RESHAPING = 3, 194 }; 195 struct r5l_payload_flush { 196 struct r5l_payload_header header; 197 __le32 size; 198 __le64 flush_stripes[]; 199 } __attribute__((__packed__)); 200 enum r5l_payload_flush_flag { 201 R5LOG_PAYLOAD_FLAG_FLUSH_STRIPE = 1, 202 }; 203 struct r5l_meta_block { 204 __le32 magic; 205 __le32 checksum; 206 __u8 version; 207 __u8 __zero_pading_1; 208 __le16 __zero_pading_2; 209 __le32 meta_size; 210 __le64 seq; 211 __le64 position; 212 struct r5l_payload_header payloads[]; 213 } __attribute__((__packed__)); 214 #define R5LOG_VERSION 0x1 215 #define R5LOG_MAGIC 0x6433c509 216 struct ppl_header_entry { 217 __le64 data_sector; 218 __le32 pp_size; 219 __le32 data_size; 220 __le32 parity_disk; 221 __le32 checksum; 222 } __attribute__((__packed__)); 223 #define PPL_HEADER_SIZE 4096 224 #define PPL_HDR_RESERVED 512 225 #define PPL_HDR_ENTRY_SPACE (PPL_HEADER_SIZE - PPL_HDR_RESERVED - 4 * sizeof(__le32) - sizeof(__le64)) 226 #define PPL_HDR_MAX_ENTRIES (PPL_HDR_ENTRY_SPACE / sizeof(struct ppl_header_entry)) 227 struct ppl_header { 228 __u8 reserved[PPL_HDR_RESERVED]; 229 __le32 signature; 230 __le32 padding; 231 __le64 generation; 232 __le32 entries_count; 233 __le32 checksum; 234 struct ppl_header_entry entries[PPL_HDR_MAX_ENTRIES]; 235 } __attribute__((__packed__)); 236 #endif 237