fs/ext2/ext2.h

   1 #include <linux/fs.h>
   2 #include <linux/ext2_fs.h>
   3
   4 /*
   5  * second extended file system inode data in memory
   6  */
   7 struct ext2_inode_info {
   8         __u32   i_data[15];
   9         __u32   i_flags;
  10         __u32   i_faddr;
  11         __u8    i_frag_no;
  12         __u8    i_frag_size;
  13         __u32   i_file_acl;
  14         __u32   i_dir_acl;
  15         __u32   i_dtime;
  16         __u32   i_block_group;
  17         __u32   i_next_alloc_block;
  18         __u32   i_next_alloc_goal;
  19         __u32   i_prealloc_block;
  20         __u32   i_prealloc_count;
  21         __u32   i_dir_start_lookup;
  22         rwlock_t i_meta_lock;
  23         struct inode    vfs_inode;
  24 };
  25
  26 /*
  27  * Function prototypes
  28  */
  29
  30 /*
  31  * Ok, these declarations are also in <linux/kernel.h> but none of the
  32  * ext2 source programs needs to include it so they are duplicated here.
  33  */
  34
  35 static inline struct ext2_inode_info *EXT2_I(struct inode *inode)
  36 {
  37         return container_of(inode, struct ext2_inode_info, vfs_inode);
  38 }
  39
  40 /* balloc.c */
  41 extern int ext2_bg_has_super(struct super_block *sb, int group);
  42 extern unsigned long ext2_bg_num_gdb(struct super_block *sb, int group);
  43 extern int ext2_new_block (struct inode *, unsigned long,
  44                            __u32 *, __u32 *, int *);
  45 extern void ext2_free_blocks (struct inode *, unsigned long,
  46                               unsigned long);
  47 extern unsigned long ext2_count_free_blocks (struct super_block *);
  48 extern void ext2_check_blocks_bitmap (struct super_block *);
  49 extern struct ext2_group_desc * ext2_get_group_desc(struct super_block * sb,
  50                                                     unsigned int block_group,
  51                                                     struct buffer_head ** bh);
  52
  53 /* dir.c */
  54 extern int ext2_add_link (struct dentry *, struct inode *);
  55 extern ino_t ext2_inode_by_name(struct inode *, struct dentry *);
  56 extern int ext2_make_empty(struct inode *, struct inode *);
  57 extern struct ext2_dir_entry_2 * ext2_find_entry (struct inode *,struct dentry *, struct page **);
  58 extern int ext2_delete_entry (struct ext2_dir_entry_2 *, struct page *);
  59 extern int ext2_empty_dir (struct inode *);
  60 extern struct ext2_dir_entry_2 * ext2_dotdot (struct inode *, struct page **);
  61 extern void ext2_set_link(struct inode *, struct ext2_dir_entry_2 *, struct page *, struct inode *);
  62
  63 /* fsync.c */
  64 extern int ext2_sync_file (struct file *, struct dentry *, int);
  65
  66 /* ialloc.c */
  67 extern struct inode * ext2_new_inode (struct inode *, int);
  68 extern void ext2_free_inode (struct inode *);
  69 extern unsigned long ext2_count_free_inodes (struct super_block *);
  70 extern void ext2_check_inodes_bitmap (struct super_block *);
  71 extern unsigned long ext2_count_free (struct buffer_head *, unsigned);
  72
  73 /* inode.c */
  74 extern void ext2_read_inode (struct inode *);
  75 extern void ext2_write_inode (struct inode *, int);
  76 extern void ext2_put_inode (struct inode *);
  77 extern void ext2_delete_inode (struct inode *);
  78 extern int ext2_sync_inode (struct inode *);
  79 extern void ext2_discard_prealloc (struct inode *);
  80 extern void ext2_truncate (struct inode *);
  81
  82 /* ioctl.c */
  83 extern int ext2_ioctl (struct inode *, struct file *, unsigned int,
  84                        unsigned long);
  85
  86 /* super.c */
  87 extern void ext2_error (struct super_block *, const char *, const char *, ...)
  88         __attribute__ ((format (printf, 3, 4)));
  89 extern NORET_TYPE void ext2_panic (struct super_block *, const char *,
  90                                    const char *, ...)
  91         __attribute__ ((NORET_AND format (printf, 3, 4)));
  92 extern void ext2_warning (struct super_block *, const char *, const char *, ...)
  93         __attribute__ ((format (printf, 3, 4)));
  94 extern void ext2_update_dynamic_rev (struct super_block *sb);
  95 extern void ext2_write_super (struct super_block *);
  96
  97 /*
  98  * Inodes and files operations
  99  */
 100
 101 /* dir.c */
 102 extern struct file_operations ext2_dir_operations;
 103
 104 /* file.c */
 105 extern struct inode_operations ext2_file_inode_operations;
 106 extern struct file_operations ext2_file_operations;
 107
 108 /* inode.c */
 109 extern struct address_space_operations ext2_aops;
 110
 111 /* namei.c */
 112 extern struct inode_operations ext2_dir_inode_operations;
 113
 114 /* symlink.c */
 115 extern struct inode_operations ext2_fast_symlink_inode_operations;