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1 | #ifndef FS_MINIX_H |
2 | #define FS_MINIX_H |
3 | |
4 | #include <linux/fs.h> |
5 | #include <linux/pagemap.h> |
6 | #include <linux/minix_fs.h> |
7 | |
8 | #define INODE_VERSION(inode) minix_sb(inode->i_sb)->s_version |
9 | #define MINIX_V1 0x0001 /* original minix fs */ |
10 | #define MINIX_V2 0x0002 /* minix V2 fs */ |
11 | #define MINIX_V3 0x0003 /* minix V3 fs */ |
12 | |
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 | /* |
25 | * minix super-block data in memory |
26 | */ |
27 | struct minix_sb_info { |
28 | unsigned long s_ninodes; |
29 | unsigned long s_nzones; |
30 | unsigned long s_imap_blocks; |
31 | unsigned long s_zmap_blocks; |
32 | unsigned long s_firstdatazone; |
33 | unsigned long s_log_zone_size; |
34 | unsigned long s_max_size; |
35 | int s_dirsize; |
36 | int s_namelen; |
37 | int s_link_max; |
38 | struct buffer_head ** s_imap; |
39 | struct buffer_head ** s_zmap; |
40 | struct buffer_head * s_sbh; |
41 | struct minix_super_block * s_ms; |
42 | unsigned short s_mount_state; |
43 | unsigned short s_version; |
44 | }; |
45 | |
46 | extern struct inode *minix_iget(struct super_block *, unsigned long); |
47 | extern struct minix_inode * minix_V1_raw_inode(struct super_block *, ino_t, struct buffer_head **); |
48 | extern struct minix2_inode * minix_V2_raw_inode(struct super_block *, ino_t, struct buffer_head **); |
49 | extern struct inode * minix_new_inode(const struct inode * dir, int * error); |
50 | extern void minix_free_inode(struct inode * inode); |
51 | extern unsigned long minix_count_free_inodes(struct minix_sb_info *sbi); |
52 | extern int minix_new_block(struct inode * inode); |
53 | extern void minix_free_block(struct inode *inode, unsigned long block); |
54 | extern unsigned long minix_count_free_blocks(struct minix_sb_info *sbi); |
55 | extern int minix_getattr(struct vfsmount *, struct dentry *, struct kstat *); |
56 | extern int __minix_write_begin(struct file *file, struct address_space *mapping, |
57 | loff_t pos, unsigned len, unsigned flags, |
58 | struct page **pagep, void **fsdata); |
59 | |
60 | extern void V1_minix_truncate(struct inode *); |
61 | extern void V2_minix_truncate(struct inode *); |
62 | extern void minix_truncate(struct inode *); |
63 | extern void minix_set_inode(struct inode *, dev_t); |
64 | extern int V1_minix_get_block(struct inode *, long, struct buffer_head *, int); |
65 | extern int V2_minix_get_block(struct inode *, long, struct buffer_head *, int); |
66 | extern unsigned V1_minix_blocks(loff_t, struct super_block *); |
67 | extern unsigned V2_minix_blocks(loff_t, struct super_block *); |
68 | |
69 | extern struct minix_dir_entry *minix_find_entry(struct dentry*, struct page**); |
70 | extern int minix_add_link(struct dentry*, struct inode*); |
71 | extern int minix_delete_entry(struct minix_dir_entry*, struct page*); |
72 | extern int minix_make_empty(struct inode*, struct inode*); |
73 | extern int minix_empty_dir(struct inode*); |
74 | extern void minix_set_link(struct minix_dir_entry*, struct page*, struct inode*); |
75 | extern struct minix_dir_entry *minix_dotdot(struct inode*, struct page**); |
76 | extern ino_t minix_inode_by_name(struct dentry*); |
77 | |
78 | extern const struct inode_operations minix_file_inode_operations; |
79 | extern const struct inode_operations minix_dir_inode_operations; |
80 | extern const struct file_operations minix_file_operations; |
81 | extern const struct file_operations minix_dir_operations; |
82 | |
83 | static inline struct minix_sb_info *minix_sb(struct super_block *sb) |
84 | { |
85 | return sb->s_fs_info; |
86 | } |
87 | |
88 | static inline struct minix_inode_info *minix_i(struct inode *inode) |
89 | { |
90 | return list_entry(inode, struct minix_inode_info, vfs_inode); |
91 | } |
92 | |
93 | #endif /* FS_MINIX_H */ |
94 |
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