ufs.h 5.1 KB

123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167
  1. /* SPDX-License-Identifier: GPL-2.0 */
  2. #ifndef _UFS_UFS_H
  3. #define _UFS_UFS_H 1
  4. #ifdef pr_fmt
  5. #undef pr_fmt
  6. #endif
  7. #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  8. #define UFS_MAX_GROUP_LOADED 8
  9. #define UFS_CGNO_EMPTY ((unsigned)-1)
  10. struct ufs_sb_private_info;
  11. struct ufs_cg_private_info;
  12. struct ufs_csum;
  13. struct ufs_sb_info {
  14. struct ufs_sb_private_info * s_uspi;
  15. struct ufs_csum * s_csp;
  16. unsigned s_bytesex;
  17. unsigned s_flags;
  18. struct buffer_head ** s_ucg;
  19. struct ufs_cg_private_info * s_ucpi[UFS_MAX_GROUP_LOADED];
  20. unsigned s_cgno[UFS_MAX_GROUP_LOADED];
  21. unsigned short s_cg_loaded;
  22. unsigned s_mount_opt;
  23. struct super_block *sb;
  24. int work_queued; /* non-zero if the delayed work is queued */
  25. struct delayed_work sync_work; /* FS sync delayed work */
  26. spinlock_t work_lock; /* protects sync_work and work_queued */
  27. struct mutex s_lock;
  28. };
  29. struct ufs_inode_info {
  30. union {
  31. __fs32 i_data[15];
  32. __u8 i_symlink[2 * 4 * 15];
  33. __fs64 u2_i_data[15];
  34. } i_u1;
  35. __u32 i_flags;
  36. __u32 i_shadow;
  37. __u32 i_unused1;
  38. __u32 i_unused2;
  39. __u32 i_oeftflag;
  40. __u16 i_osync;
  41. __u64 i_lastfrag;
  42. seqlock_t meta_lock;
  43. struct mutex truncate_mutex;
  44. __u32 i_dir_start_lookup;
  45. struct inode vfs_inode;
  46. };
  47. /* mount options */
  48. #define UFS_MOUNT_ONERROR 0x0000000F
  49. #define UFS_MOUNT_ONERROR_PANIC 0x00000001
  50. #define UFS_MOUNT_ONERROR_LOCK 0x00000002
  51. #define UFS_MOUNT_ONERROR_UMOUNT 0x00000004
  52. #define UFS_MOUNT_ONERROR_REPAIR 0x00000008
  53. #define UFS_MOUNT_UFSTYPE 0x0000FFF0
  54. #define UFS_MOUNT_UFSTYPE_OLD 0x00000010
  55. #define UFS_MOUNT_UFSTYPE_44BSD 0x00000020
  56. #define UFS_MOUNT_UFSTYPE_SUN 0x00000040
  57. #define UFS_MOUNT_UFSTYPE_NEXTSTEP 0x00000080
  58. #define UFS_MOUNT_UFSTYPE_NEXTSTEP_CD 0x00000100
  59. #define UFS_MOUNT_UFSTYPE_OPENSTEP 0x00000200
  60. #define UFS_MOUNT_UFSTYPE_SUNx86 0x00000400
  61. #define UFS_MOUNT_UFSTYPE_HP 0x00000800
  62. #define UFS_MOUNT_UFSTYPE_UFS2 0x00001000
  63. #define UFS_MOUNT_UFSTYPE_SUNOS 0x00002000
  64. #define ufs_clear_opt(o,opt) o &= ~UFS_MOUNT_##opt
  65. #define ufs_set_opt(o,opt) o |= UFS_MOUNT_##opt
  66. #define ufs_test_opt(o,opt) ((o) & UFS_MOUNT_##opt)
  67. /*
  68. * Debug code
  69. */
  70. #ifdef CONFIG_UFS_DEBUG
  71. # define UFSD(f, a...) { \
  72. pr_debug("UFSD (%s, %d): %s:", \
  73. __FILE__, __LINE__, __func__); \
  74. pr_debug(f, ## a); \
  75. }
  76. #else
  77. # define UFSD(f, a...) /**/
  78. #endif
  79. /* balloc.c */
  80. extern void ufs_free_fragments (struct inode *, u64, unsigned);
  81. extern void ufs_free_blocks (struct inode *, u64, unsigned);
  82. extern u64 ufs_new_fragments(struct inode *, void *, u64, u64,
  83. unsigned, int *, struct page *);
  84. /* cylinder.c */
  85. extern struct ufs_cg_private_info * ufs_load_cylinder (struct super_block *, unsigned);
  86. extern void ufs_put_cylinder (struct super_block *, unsigned);
  87. /* dir.c */
  88. extern const struct inode_operations ufs_dir_inode_operations;
  89. extern int ufs_add_link (struct dentry *, struct inode *);
  90. extern ino_t ufs_inode_by_name(struct inode *, const struct qstr *);
  91. extern int ufs_make_empty(struct inode *, struct inode *);
  92. extern struct ufs_dir_entry *ufs_find_entry(struct inode *, const struct qstr *, struct page **);
  93. extern int ufs_delete_entry(struct inode *, struct ufs_dir_entry *, struct page *);
  94. extern int ufs_empty_dir (struct inode *);
  95. extern struct ufs_dir_entry *ufs_dotdot(struct inode *, struct page **);
  96. extern void ufs_set_link(struct inode *dir, struct ufs_dir_entry *de,
  97. struct page *page, struct inode *inode, bool update_times);
  98. /* file.c */
  99. extern const struct inode_operations ufs_file_inode_operations;
  100. extern const struct file_operations ufs_file_operations;
  101. extern const struct address_space_operations ufs_aops;
  102. /* ialloc.c */
  103. extern void ufs_free_inode (struct inode *inode);
  104. extern struct inode * ufs_new_inode (struct inode *, umode_t);
  105. /* inode.c */
  106. extern struct inode *ufs_iget(struct super_block *, unsigned long);
  107. extern int ufs_write_inode (struct inode *, struct writeback_control *);
  108. extern int ufs_sync_inode (struct inode *);
  109. extern void ufs_evict_inode (struct inode *);
  110. extern int ufs_setattr(struct user_namespace *mnt_userns, struct dentry *dentry,
  111. struct iattr *attr);
  112. /* namei.c */
  113. extern const struct file_operations ufs_dir_operations;
  114. /* super.c */
  115. extern __printf(3, 4)
  116. void ufs_warning(struct super_block *, const char *, const char *, ...);
  117. extern __printf(3, 4)
  118. void ufs_error(struct super_block *, const char *, const char *, ...);
  119. extern __printf(3, 4)
  120. void ufs_panic(struct super_block *, const char *, const char *, ...);
  121. void ufs_mark_sb_dirty(struct super_block *sb);
  122. static inline struct ufs_sb_info *UFS_SB(struct super_block *sb)
  123. {
  124. return sb->s_fs_info;
  125. }
  126. static inline struct ufs_inode_info *UFS_I(struct inode *inode)
  127. {
  128. return container_of(inode, struct ufs_inode_info, vfs_inode);
  129. }
  130. /*
  131. * Give cylinder group number for a file system block.
  132. * Give cylinder group block number for a file system block.
  133. */
  134. /* #define ufs_dtog(d) ((d) / uspi->s_fpg) */
  135. static inline u64 ufs_dtog(struct ufs_sb_private_info * uspi, u64 b)
  136. {
  137. do_div(b, uspi->s_fpg);
  138. return b;
  139. }
  140. /* #define ufs_dtogd(d) ((d) % uspi->s_fpg) */
  141. static inline u32 ufs_dtogd(struct ufs_sb_private_info * uspi, u64 b)
  142. {
  143. return do_div(b, uspi->s_fpg);
  144. }
  145. #endif /* _UFS_UFS_H */