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1da177e4 LT |
1 | /* |
2 | * Name : qnx4_fs.h | |
3 | * Author : Richard Frowijn | |
4 | * Function : qnx4 global filesystem definitions | |
5 | * Version : 1.0.2 | |
6 | * Last modified : 2000-01-31 | |
7 | * | |
8 | * History : 23-03-1998 created | |
9 | */ | |
10 | #ifndef _LINUX_QNX4_FS_H | |
11 | #define _LINUX_QNX4_FS_H | |
12 | ||
13 | #include <linux/qnxtypes.h> | |
14 | ||
15 | #define QNX4_ROOT_INO 1 | |
16 | ||
17 | #define QNX4_MAX_XTNTS_PER_XBLK 60 | |
18 | /* for di_status */ | |
19 | #define QNX4_FILE_USED 0x01 | |
20 | #define QNX4_FILE_MODIFIED 0x02 | |
21 | #define QNX4_FILE_BUSY 0x04 | |
22 | #define QNX4_FILE_LINK 0x08 | |
23 | #define QNX4_FILE_INODE 0x10 | |
24 | #define QNX4_FILE_FSYSCLEAN 0x20 | |
25 | ||
26 | #define QNX4_I_MAP_SLOTS 8 | |
27 | #define QNX4_Z_MAP_SLOTS 64 | |
28 | #define QNX4_SUPER_MAGIC 0x002f /* qnx4 fs detection */ | |
29 | #define QNX4_VALID_FS 0x0001 /* Clean fs. */ | |
30 | #define QNX4_ERROR_FS 0x0002 /* fs has errors. */ | |
31 | #define QNX4_BLOCK_SIZE 0x200 /* blocksize of 512 bytes */ | |
32 | #define QNX4_BLOCK_SIZE_BITS 9 /* blocksize shift */ | |
33 | #define QNX4_DIR_ENTRY_SIZE 0x040 /* dir entry size of 64 bytes */ | |
34 | #define QNX4_DIR_ENTRY_SIZE_BITS 6 /* dir entry size shift */ | |
35 | #define QNX4_XBLK_ENTRY_SIZE 0x200 /* xblk entry size */ | |
36 | #define QNX4_INODES_PER_BLOCK 0x08 /* 512 / 64 */ | |
37 | ||
38 | /* for filenames */ | |
39 | #define QNX4_SHORT_NAME_MAX 16 | |
40 | #define QNX4_NAME_MAX 48 | |
41 | ||
42 | /* | |
43 | * This is the original qnx4 inode layout on disk. | |
44 | */ | |
45 | struct qnx4_inode_entry { | |
46 | char di_fname[QNX4_SHORT_NAME_MAX]; | |
47 | qnx4_off_t di_size; | |
48 | qnx4_xtnt_t di_first_xtnt; | |
49 | __u32 di_xblk; | |
50 | __s32 di_ftime; | |
51 | __s32 di_mtime; | |
52 | __s32 di_atime; | |
53 | __s32 di_ctime; | |
54 | qnx4_nxtnt_t di_num_xtnts; | |
55 | qnx4_mode_t di_mode; | |
56 | qnx4_muid_t di_uid; | |
57 | qnx4_mgid_t di_gid; | |
58 | qnx4_nlink_t di_nlink; | |
59 | __u8 di_zero[4]; | |
60 | qnx4_ftype_t di_type; | |
61 | __u8 di_status; | |
62 | }; | |
63 | ||
64 | struct qnx4_link_info { | |
65 | char dl_fname[QNX4_NAME_MAX]; | |
66 | __u32 dl_inode_blk; | |
67 | __u8 dl_inode_ndx; | |
68 | __u8 dl_spare[10]; | |
69 | __u8 dl_status; | |
70 | }; | |
71 | ||
72 | struct qnx4_xblk { | |
73 | __u32 xblk_next_xblk; | |
74 | __u32 xblk_prev_xblk; | |
75 | __u8 xblk_num_xtnts; | |
76 | __u8 xblk_spare[3]; | |
77 | __s32 xblk_num_blocks; | |
78 | qnx4_xtnt_t xblk_xtnts[QNX4_MAX_XTNTS_PER_XBLK]; | |
79 | char xblk_signature[8]; | |
80 | qnx4_xtnt_t xblk_first_xtnt; | |
81 | }; | |
82 | ||
83 | struct qnx4_super_block { | |
84 | struct qnx4_inode_entry RootDir; | |
85 | struct qnx4_inode_entry Inode; | |
86 | struct qnx4_inode_entry Boot; | |
87 | struct qnx4_inode_entry AltBoot; | |
88 | }; | |
89 | ||
90 | #ifdef __KERNEL__ | |
91 | ||
92 | #define QNX4_DEBUG 0 | |
93 | ||
94 | #if QNX4_DEBUG | |
95 | #define QNX4DEBUG(X) printk X | |
96 | #else | |
97 | #define QNX4DEBUG(X) (void) 0 | |
98 | #endif | |
99 | ||
100 | struct qnx4_sb_info { | |
101 | struct buffer_head *sb_buf; /* superblock buffer */ | |
102 | struct qnx4_super_block *sb; /* our superblock */ | |
103 | unsigned int Version; /* may be useful */ | |
104 | struct qnx4_inode_entry *BitMap; /* useful */ | |
105 | }; | |
106 | ||
107 | struct qnx4_inode_info { | |
108 | struct qnx4_inode_entry raw; | |
109 | loff_t mmu_private; | |
110 | struct inode vfs_inode; | |
111 | }; | |
112 | ||
113 | extern struct dentry *qnx4_lookup(struct inode *dir, struct dentry *dentry, struct nameidata *nd); | |
114 | extern unsigned long qnx4_count_free_blocks(struct super_block *sb); | |
115 | extern unsigned long qnx4_block_map(struct inode *inode, long iblock); | |
116 | ||
117 | extern struct buffer_head *qnx4_bread(struct inode *, int, int); | |
118 | ||
119 | extern struct inode_operations qnx4_file_inode_operations; | |
120 | extern struct inode_operations qnx4_dir_inode_operations; | |
121 | extern struct file_operations qnx4_file_operations; | |
122 | extern struct file_operations qnx4_dir_operations; | |
123 | extern int qnx4_is_free(struct super_block *sb, long block); | |
124 | extern int qnx4_set_bitmap(struct super_block *sb, long block, int busy); | |
125 | extern int qnx4_create(struct inode *inode, struct dentry *dentry, int mode, struct nameidata *nd); | |
126 | extern void qnx4_truncate(struct inode *inode); | |
127 | extern void qnx4_free_inode(struct inode *inode); | |
128 | extern int qnx4_unlink(struct inode *dir, struct dentry *dentry); | |
129 | extern int qnx4_rmdir(struct inode *dir, struct dentry *dentry); | |
130 | extern int qnx4_sync_file(struct file *file, struct dentry *dentry, int); | |
131 | extern int qnx4_sync_inode(struct inode *inode); | |
132 | ||
133 | static inline struct qnx4_sb_info *qnx4_sb(struct super_block *sb) | |
134 | { | |
135 | return sb->s_fs_info; | |
136 | } | |
137 | ||
138 | static inline struct qnx4_inode_info *qnx4_i(struct inode *inode) | |
139 | { | |
140 | return container_of(inode, struct qnx4_inode_info, vfs_inode); | |
141 | } | |
142 | ||
143 | static inline struct qnx4_inode_entry *qnx4_raw_inode(struct inode *inode) | |
144 | { | |
145 | return &qnx4_i(inode)->raw; | |
146 | } | |
147 | ||
148 | #endif /* __KERNEL__ */ | |
149 | ||
150 | #endif |