minix.h 3.3 KB

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  1. #include <linux/fs.h>
  2. #include <linux/pagemap.h>
  3. #include <linux/minix_fs.h>
  4. /*
  5. * change the define below to 0 if you want names > info->s_namelen chars to be
  6. * truncated. Else they will be disallowed (ENAMETOOLONG).
  7. */
  8. #define NO_TRUNCATE 1
  9. #define INODE_VERSION(inode) minix_sb(inode->i_sb)->s_version
  10. #define MINIX_V1 0x0001 /* original minix fs */
  11. #define MINIX_V2 0x0002 /* minix V2 fs */
  12. #define MINIX_V3 0x0003 /* minix V3 fs */
  13. /*
  14. * minix fs inode data in memory
  15. */
  16. struct minix_inode_info {
  17. union {
  18. __u16 i1_data[16];
  19. __u32 i2_data[16];
  20. } u;
  21. struct inode vfs_inode;
  22. };
  23. /*
  24. * minix super-block data in memory
  25. */
  26. struct minix_sb_info {
  27. unsigned long s_ninodes;
  28. unsigned long s_nzones;
  29. unsigned long s_imap_blocks;
  30. unsigned long s_zmap_blocks;
  31. unsigned long s_firstdatazone;
  32. unsigned long s_log_zone_size;
  33. unsigned long s_max_size;
  34. int s_dirsize;
  35. int s_namelen;
  36. int s_link_max;
  37. struct buffer_head ** s_imap;
  38. struct buffer_head ** s_zmap;
  39. struct buffer_head * s_sbh;
  40. struct minix_super_block * s_ms;
  41. unsigned short s_mount_state;
  42. unsigned short s_version;
  43. };
  44. extern struct minix_inode * minix_V1_raw_inode(struct super_block *, ino_t, struct buffer_head **);
  45. extern struct minix2_inode * minix_V2_raw_inode(struct super_block *, ino_t, struct buffer_head **);
  46. extern struct inode * minix_new_inode(const struct inode * dir, int * error);
  47. extern void minix_free_inode(struct inode * inode);
  48. extern unsigned long minix_count_free_inodes(struct minix_sb_info *sbi);
  49. extern int minix_new_block(struct inode * inode);
  50. extern void minix_free_block(struct inode *inode, unsigned long block);
  51. extern unsigned long minix_count_free_blocks(struct minix_sb_info *sbi);
  52. extern int minix_getattr(struct vfsmount *, struct dentry *, struct kstat *);
  53. extern void V1_minix_truncate(struct inode *);
  54. extern void V2_minix_truncate(struct inode *);
  55. extern void minix_truncate(struct inode *);
  56. extern int minix_sync_inode(struct inode *);
  57. extern void minix_set_inode(struct inode *, dev_t);
  58. extern int V1_minix_get_block(struct inode *, long, struct buffer_head *, int);
  59. extern int V2_minix_get_block(struct inode *, long, struct buffer_head *, int);
  60. extern unsigned V1_minix_blocks(loff_t, struct super_block *);
  61. extern unsigned V2_minix_blocks(loff_t, struct super_block *);
  62. extern struct minix_dir_entry *minix_find_entry(struct dentry*, struct page**);
  63. extern int minix_add_link(struct dentry*, struct inode*);
  64. extern int minix_delete_entry(struct minix_dir_entry*, struct page*);
  65. extern int minix_make_empty(struct inode*, struct inode*);
  66. extern int minix_empty_dir(struct inode*);
  67. extern void minix_set_link(struct minix_dir_entry*, struct page*, struct inode*);
  68. extern struct minix_dir_entry *minix_dotdot(struct inode*, struct page**);
  69. extern ino_t minix_inode_by_name(struct dentry*);
  70. extern int minix_sync_file(struct file *, struct dentry *, int);
  71. extern const struct inode_operations minix_file_inode_operations;
  72. extern const struct inode_operations minix_dir_inode_operations;
  73. extern const struct file_operations minix_file_operations;
  74. extern const struct file_operations minix_dir_operations;
  75. extern struct dentry_operations minix_dentry_operations;
  76. static inline struct minix_sb_info *minix_sb(struct super_block *sb)
  77. {
  78. return sb->s_fs_info;
  79. }
  80. static inline struct minix_inode_info *minix_i(struct inode *inode)
  81. {
  82. return list_entry(inode, struct minix_inode_info, vfs_inode);
  83. }