udf_sb.h 4.1 KB

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  1. /* SPDX-License-Identifier: GPL-2.0 */
  2. #ifndef __LINUX_UDF_SB_H
  3. #define __LINUX_UDF_SB_H
  4. #include <linux/mutex.h>
  5. #include <linux/bitops.h>
  6. #include <linux/magic.h>
  7. #define UDF_MAX_READ_VERSION 0x0250
  8. #define UDF_MAX_WRITE_VERSION 0x0201
  9. #define UDF_FLAG_USE_EXTENDED_FE 0
  10. #define UDF_VERS_USE_EXTENDED_FE 0x0200
  11. #define UDF_FLAG_USE_STREAMS 1
  12. #define UDF_VERS_USE_STREAMS 0x0200
  13. #define UDF_FLAG_USE_SHORT_AD 2
  14. #define UDF_FLAG_USE_AD_IN_ICB 3
  15. #define UDF_FLAG_USE_FILE_CTIME_EA 4
  16. #define UDF_FLAG_STRICT 5
  17. #define UDF_FLAG_UNDELETE 6
  18. #define UDF_FLAG_UNHIDE 7
  19. #define UDF_FLAG_VARCONV 8
  20. #define UDF_FLAG_UID_FORGET 11 /* save -1 for uid to disk */
  21. #define UDF_FLAG_GID_FORGET 12
  22. #define UDF_FLAG_UID_SET 13
  23. #define UDF_FLAG_GID_SET 14
  24. #define UDF_FLAG_SESSION_SET 15
  25. #define UDF_FLAG_LASTBLOCK_SET 16
  26. #define UDF_FLAG_BLOCKSIZE_SET 17
  27. #define UDF_FLAG_INCONSISTENT 18
  28. #define UDF_FLAG_RW_INCOMPAT 19 /* Set when we find RW incompatible
  29. * feature */
  30. #define UDF_PART_FLAG_UNALLOC_BITMAP 0x0001
  31. #define UDF_PART_FLAG_UNALLOC_TABLE 0x0002
  32. #define UDF_PART_FLAG_READ_ONLY 0x0010
  33. #define UDF_PART_FLAG_WRITE_ONCE 0x0020
  34. #define UDF_PART_FLAG_REWRITABLE 0x0040
  35. #define UDF_PART_FLAG_OVERWRITABLE 0x0080
  36. #define UDF_MAX_BLOCK_LOADED 8
  37. #define UDF_TYPE1_MAP15 0x1511U
  38. #define UDF_VIRTUAL_MAP15 0x1512U
  39. #define UDF_VIRTUAL_MAP20 0x2012U
  40. #define UDF_SPARABLE_MAP15 0x1522U
  41. #define UDF_METADATA_MAP25 0x2511U
  42. #define UDF_INVALID_MODE ((umode_t)-1)
  43. #define MF_DUPLICATE_MD 0x01
  44. #define MF_MIRROR_FE_LOADED 0x02
  45. struct udf_meta_data {
  46. __u32 s_meta_file_loc;
  47. __u32 s_mirror_file_loc;
  48. __u32 s_bitmap_file_loc;
  49. __u32 s_alloc_unit_size;
  50. __u16 s_align_unit_size;
  51. /*
  52. * Partition Reference Number of the associated physical / sparable
  53. * partition
  54. */
  55. __u16 s_phys_partition_ref;
  56. int s_flags;
  57. struct inode *s_metadata_fe;
  58. struct inode *s_mirror_fe;
  59. struct inode *s_bitmap_fe;
  60. };
  61. struct udf_sparing_data {
  62. __u16 s_packet_len;
  63. struct buffer_head *s_spar_map[4];
  64. };
  65. struct udf_virtual_data {
  66. __u32 s_num_entries;
  67. __u16 s_start_offset;
  68. };
  69. struct udf_bitmap {
  70. __u32 s_extPosition;
  71. int s_nr_groups;
  72. struct buffer_head *s_block_bitmap[];
  73. };
  74. struct udf_part_map {
  75. union {
  76. struct udf_bitmap *s_bitmap;
  77. struct inode *s_table;
  78. } s_uspace;
  79. __u32 s_partition_root;
  80. __u32 s_partition_len;
  81. __u16 s_partition_type;
  82. __u16 s_partition_num;
  83. union {
  84. struct udf_sparing_data s_sparing;
  85. struct udf_virtual_data s_virtual;
  86. struct udf_meta_data s_metadata;
  87. } s_type_specific;
  88. __u32 (*s_partition_func)(struct super_block *, __u32, __u16, __u32);
  89. __u16 s_volumeseqnum;
  90. __u16 s_partition_flags;
  91. };
  92. #pragma pack()
  93. struct udf_sb_info {
  94. struct udf_part_map *s_partmaps;
  95. __u8 s_volume_ident[32];
  96. /* Overall info */
  97. __u16 s_partitions;
  98. __u16 s_partition;
  99. /* Sector headers */
  100. __s32 s_session;
  101. __u32 s_anchor;
  102. __u32 s_last_block;
  103. struct buffer_head *s_lvid_bh;
  104. /* Default permissions */
  105. umode_t s_umask;
  106. kgid_t s_gid;
  107. kuid_t s_uid;
  108. umode_t s_fmode;
  109. umode_t s_dmode;
  110. /* Lock protecting consistency of above permission settings */
  111. rwlock_t s_cred_lock;
  112. /* Root Info */
  113. struct timespec64 s_record_time;
  114. /* Fileset Info */
  115. __u16 s_serial_number;
  116. /* highest UDF revision we have recorded to this media */
  117. __u16 s_udfrev;
  118. /* Miscellaneous flags */
  119. unsigned long s_flags;
  120. /* Encoding info */
  121. struct nls_table *s_nls_map;
  122. /* VAT inode */
  123. struct inode *s_vat_inode;
  124. struct mutex s_alloc_mutex;
  125. /* Protected by s_alloc_mutex */
  126. unsigned int s_lvid_dirty;
  127. };
  128. static inline struct udf_sb_info *UDF_SB(struct super_block *sb)
  129. {
  130. return sb->s_fs_info;
  131. }
  132. struct logicalVolIntegrityDescImpUse *udf_sb_lvidiu(struct super_block *sb);
  133. int udf_compute_nr_groups(struct super_block *sb, u32 partition);
  134. static inline int UDF_QUERY_FLAG(struct super_block *sb, int flag)
  135. {
  136. return test_bit(flag, &UDF_SB(sb)->s_flags);
  137. }
  138. static inline void UDF_SET_FLAG(struct super_block *sb, int flag)
  139. {
  140. set_bit(flag, &UDF_SB(sb)->s_flags);
  141. }
  142. static inline void UDF_CLEAR_FLAG(struct super_block *sb, int flag)
  143. {
  144. clear_bit(flag, &UDF_SB(sb)->s_flags);
  145. }
  146. #endif /* __LINUX_UDF_SB_H */