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Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * Name : qnx4_fs.h | |
3 | * Author : Richard Frowijn | |
4 | * Function : qnx4 global filesystem definitions | |
1da177e4 LT |
5 | * History : 23-03-1998 created |
6 | */ | |
7 | #ifndef _LINUX_QNX4_FS_H | |
8 | #define _LINUX_QNX4_FS_H | |
9 | ||
8d1a0a13 | 10 | #include <linux/types.h> |
1da177e4 | 11 | #include <linux/qnxtypes.h> |
e18fa700 | 12 | #include <linux/magic.h> |
1da177e4 LT |
13 | |
14 | #define QNX4_ROOT_INO 1 | |
15 | ||
16 | #define QNX4_MAX_XTNTS_PER_XBLK 60 | |
17 | /* for di_status */ | |
18 | #define QNX4_FILE_USED 0x01 | |
19 | #define QNX4_FILE_MODIFIED 0x02 | |
20 | #define QNX4_FILE_BUSY 0x04 | |
21 | #define QNX4_FILE_LINK 0x08 | |
22 | #define QNX4_FILE_INODE 0x10 | |
23 | #define QNX4_FILE_FSYSCLEAN 0x20 | |
24 | ||
25 | #define QNX4_I_MAP_SLOTS 8 | |
26 | #define QNX4_Z_MAP_SLOTS 64 | |
1da177e4 LT |
27 | #define QNX4_VALID_FS 0x0001 /* Clean fs. */ |
28 | #define QNX4_ERROR_FS 0x0002 /* fs has errors. */ | |
29 | #define QNX4_BLOCK_SIZE 0x200 /* blocksize of 512 bytes */ | |
30 | #define QNX4_BLOCK_SIZE_BITS 9 /* blocksize shift */ | |
31 | #define QNX4_DIR_ENTRY_SIZE 0x040 /* dir entry size of 64 bytes */ | |
32 | #define QNX4_DIR_ENTRY_SIZE_BITS 6 /* dir entry size shift */ | |
33 | #define QNX4_XBLK_ENTRY_SIZE 0x200 /* xblk entry size */ | |
34 | #define QNX4_INODES_PER_BLOCK 0x08 /* 512 / 64 */ | |
35 | ||
36 | /* for filenames */ | |
37 | #define QNX4_SHORT_NAME_MAX 16 | |
38 | #define QNX4_NAME_MAX 48 | |
39 | ||
40 | /* | |
41 | * This is the original qnx4 inode layout on disk. | |
42 | */ | |
43 | struct qnx4_inode_entry { | |
44 | char di_fname[QNX4_SHORT_NAME_MAX]; | |
45 | qnx4_off_t di_size; | |
46 | qnx4_xtnt_t di_first_xtnt; | |
75043cb5 AD |
47 | __le32 di_xblk; |
48 | __le32 di_ftime; | |
49 | __le32 di_mtime; | |
50 | __le32 di_atime; | |
51 | __le32 di_ctime; | |
1da177e4 LT |
52 | qnx4_nxtnt_t di_num_xtnts; |
53 | qnx4_mode_t di_mode; | |
54 | qnx4_muid_t di_uid; | |
55 | qnx4_mgid_t di_gid; | |
56 | qnx4_nlink_t di_nlink; | |
57 | __u8 di_zero[4]; | |
58 | qnx4_ftype_t di_type; | |
59 | __u8 di_status; | |
60 | }; | |
61 | ||
62 | struct qnx4_link_info { | |
63 | char dl_fname[QNX4_NAME_MAX]; | |
75043cb5 | 64 | __le32 dl_inode_blk; |
1da177e4 LT |
65 | __u8 dl_inode_ndx; |
66 | __u8 dl_spare[10]; | |
67 | __u8 dl_status; | |
68 | }; | |
69 | ||
70 | struct qnx4_xblk { | |
75043cb5 AD |
71 | __le32 xblk_next_xblk; |
72 | __le32 xblk_prev_xblk; | |
1da177e4 LT |
73 | __u8 xblk_num_xtnts; |
74 | __u8 xblk_spare[3]; | |
75043cb5 | 75 | __le32 xblk_num_blocks; |
1da177e4 LT |
76 | qnx4_xtnt_t xblk_xtnts[QNX4_MAX_XTNTS_PER_XBLK]; |
77 | char xblk_signature[8]; | |
78 | qnx4_xtnt_t xblk_first_xtnt; | |
79 | }; | |
80 | ||
81 | struct qnx4_super_block { | |
82 | struct qnx4_inode_entry RootDir; | |
83 | struct qnx4_inode_entry Inode; | |
84 | struct qnx4_inode_entry Boot; | |
85 | struct qnx4_inode_entry AltBoot; | |
86 | }; | |
87 | ||
88 | #ifdef __KERNEL__ | |
89 | ||
90 | #define QNX4_DEBUG 0 | |
91 | ||
92 | #if QNX4_DEBUG | |
93 | #define QNX4DEBUG(X) printk X | |
94 | #else | |
95 | #define QNX4DEBUG(X) (void) 0 | |
96 | #endif | |
97 | ||
98 | struct qnx4_sb_info { | |
99 | struct buffer_head *sb_buf; /* superblock buffer */ | |
100 | struct qnx4_super_block *sb; /* our superblock */ | |
101 | unsigned int Version; /* may be useful */ | |
102 | struct qnx4_inode_entry *BitMap; /* useful */ | |
103 | }; | |
104 | ||
105 | struct qnx4_inode_info { | |
106 | struct qnx4_inode_entry raw; | |
107 | loff_t mmu_private; | |
108 | struct inode vfs_inode; | |
109 | }; | |
110 | ||
2b7e5bcb | 111 | extern struct inode *qnx4_iget(struct super_block *, unsigned long); |
1da177e4 LT |
112 | extern struct dentry *qnx4_lookup(struct inode *dir, struct dentry *dentry, struct nameidata *nd); |
113 | extern unsigned long qnx4_count_free_blocks(struct super_block *sb); | |
114 | extern unsigned long qnx4_block_map(struct inode *inode, long iblock); | |
115 | ||
116 | extern struct buffer_head *qnx4_bread(struct inode *, int, int); | |
117 | ||
c5ef1c42 AV |
118 | extern const struct inode_operations qnx4_file_inode_operations; |
119 | extern const struct inode_operations qnx4_dir_inode_operations; | |
4b6f5d20 AV |
120 | extern const struct file_operations qnx4_file_operations; |
121 | extern const struct file_operations qnx4_dir_operations; | |
1da177e4 LT |
122 | extern int qnx4_is_free(struct super_block *sb, long block); |
123 | extern int qnx4_set_bitmap(struct super_block *sb, long block, int busy); | |
124 | extern int qnx4_create(struct inode *inode, struct dentry *dentry, int mode, struct nameidata *nd); | |
125 | extern void qnx4_truncate(struct inode *inode); | |
126 | extern void qnx4_free_inode(struct inode *inode); | |
127 | extern int qnx4_unlink(struct inode *dir, struct dentry *dentry); | |
128 | extern int qnx4_rmdir(struct inode *dir, struct dentry *dentry); | |
129 | extern int qnx4_sync_file(struct file *file, struct dentry *dentry, int); | |
130 | extern int qnx4_sync_inode(struct inode *inode); | |
131 | ||
132 | static inline struct qnx4_sb_info *qnx4_sb(struct super_block *sb) | |
133 | { | |
134 | return sb->s_fs_info; | |
135 | } | |
136 | ||
137 | static inline struct qnx4_inode_info *qnx4_i(struct inode *inode) | |
138 | { | |
139 | return container_of(inode, struct qnx4_inode_info, vfs_inode); | |
140 | } | |
141 | ||
142 | static inline struct qnx4_inode_entry *qnx4_raw_inode(struct inode *inode) | |
143 | { | |
144 | return &qnx4_i(inode)->raw; | |
145 | } | |
146 | ||
147 | #endif /* __KERNEL__ */ | |
148 | ||
149 | #endif |