1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
|
#ifndef _LINUX_MINIX_FS_H
#define _LINUX_MINIX_FS_H
/*
* The minix filesystem constants/structures
*/
/*
* Thanks to Kees J Bot for sending me the definitions of the new
* minix filesystem (aka V2) with bigger inodes and 32-bit block
* pointers.
*/
#define MINIX_ROOT_INO 1
/* Not the same as the bogus LINK_MAX in <linux/limits.h>. Oh well. */
#define MINIX_LINK_MAX 250
#define MINIX2_LINK_MAX 65530
#define MINIX_I_MAP_SLOTS 8
#define MINIX_Z_MAP_SLOTS 64
#define MINIX_SUPER_MAGIC 0x137F /* original minix fs */
#define MINIX_SUPER_MAGIC2 0x138F /* minix fs, 30 char names */
#define MINIX2_SUPER_MAGIC 0x2468 /* minix V2 fs */
#define MINIX2_SUPER_MAGIC2 0x2478 /* minix V2 fs, 30 char names */
#define MINIX_VALID_FS 0x0001 /* Clean fs. */
#define MINIX_ERROR_FS 0x0002 /* fs has errors. */
#define MINIX_INODES_PER_BLOCK ((BLOCK_SIZE)/(sizeof (struct minix_inode)))
#define MINIX2_INODES_PER_BLOCK ((BLOCK_SIZE)/(sizeof (struct minix2_inode)))
#define MINIX_V1 0x0001 /* original minix fs */
#define MINIX_V2 0x0002 /* minix V2 fs */
#define INODE_VERSION(inode) inode->i_sb->u.minix_sb.s_version
/*
* This is the original minix inode layout on disk.
* Note the 8-bit gid and atime and ctime.
*/
struct minix_inode {
__u16 i_mode;
__u16 i_uid;
__u32 i_size;
__u32 i_time;
__u8 i_gid;
__u8 i_nlinks;
__u16 i_zone[9];
};
/*
* The new minix inode has all the time entries, as well as
* long block numbers and a third indirect block (7+1+1+1
* instead of 7+1+1). Also, some previously 8-bit values are
* now 16-bit. The inode is now 64 bytes instead of 32.
*/
struct minix2_inode {
__u16 i_mode;
__u16 i_nlinks;
__u16 i_uid;
__u16 i_gid;
__u32 i_size;
__u32 i_atime;
__u32 i_mtime;
__u32 i_ctime;
__u32 i_zone[10];
};
/*
* minix super-block data on disk
*/
struct minix_super_block {
__u16 s_ninodes;
__u16 s_nzones;
__u16 s_imap_blocks;
__u16 s_zmap_blocks;
__u16 s_firstdatazone;
__u16 s_log_zone_size;
__u32 s_max_size;
__u16 s_magic;
__u16 s_state;
__u32 s_zones;
};
struct minix_dir_entry {
__u16 inode;
char name[0];
};
#ifdef __KERNEL__
extern struct dentry *minix_lookup(struct inode * dir, struct dentry *dentry);
extern int minix_create(struct inode * dir, struct dentry *dentry, int mode);
extern int minix_mkdir(struct inode * dir, struct dentry *dentry, int mode);
extern int minix_rmdir(struct inode * dir, struct dentry *dentry);
extern int minix_unlink(struct inode * dir, struct dentry *dentry);
extern int minix_symlink(struct inode * inode, struct dentry *dentry,
const char * symname);
extern int minix_link(struct dentry * old_dentry, struct inode * dir, struct dentry *dentry);
extern int minix_mknod(struct inode * dir, struct dentry *dentry, int mode, int rdev);
extern int minix_rename(struct inode * old_dir, struct dentry *old_dentry,
struct inode * new_dir, struct dentry *new_dentry);
extern struct inode * minix_new_inode(const struct inode * dir);
extern void minix_free_inode(struct inode * inode);
extern unsigned long minix_count_free_inodes(struct super_block *sb);
extern int minix_new_block(struct super_block * sb);
extern void minix_free_block(struct super_block * sb, int block);
extern unsigned long minix_count_free_blocks(struct super_block *sb);
extern int minix_bmap(struct inode *,int);
extern struct buffer_head * minix_getblk(struct inode *, int, int);
extern int minix_getblk_block (struct inode *, long, int, int *, int *);
extern struct buffer_head * minix_bread(struct inode *, int, int);
extern void minix_truncate(struct inode *);
extern int init_minix_fs(void);
extern int minix_sync_inode(struct inode *);
extern int minix_sync_file(struct file *, struct dentry *);
extern struct inode_operations minix_file_inode_operations;
extern struct inode_operations minix_dir_inode_operations;
extern struct inode_operations minix_symlink_inode_operations;
extern struct dentry_operations minix_dentry_operations;
#endif /* __KERNEL__ */
#endif
|
