3 * Author : Richard Frowijn
4 * Function : qnx4 global filesystem definitions
6 * Last modified : 2000-01-31
8 * History : 23-03-1998 created
10 #ifndef _LINUX_QNX4_FS_H
11 #define _LINUX_QNX4_FS_H
13 #include <linux/qnxtypes.h>
15 #define QNX4_ROOT_INO 1
17 #define QNX4_MAX_XTNTS_PER_XBLK 60
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
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 */
39 #define QNX4_SHORT_NAME_MAX 16
40 #define QNX4_NAME_MAX 48
43 * This is the original qnx4 inode layout on disk.
45 struct qnx4_inode_entry
{
46 char di_fname
[QNX4_SHORT_NAME_MAX
];
48 qnx4_xtnt_t di_first_xtnt
;
54 qnx4_nxtnt_t di_num_xtnts
;
58 qnx4_nlink_t di_nlink
;
64 struct qnx4_link_info
{
65 char dl_fname
[QNX4_NAME_MAX
];
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
;
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
;
95 #define QNX4DEBUG(X) printk X
97 #define QNX4DEBUG(X) (void) 0
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 */
107 struct qnx4_inode_info
{
108 struct qnx4_inode_entry raw
;
110 struct inode vfs_inode
;
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
);
117 extern struct buffer_head
*qnx4_bread(struct inode
*, int, int);
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
);
133 static inline struct qnx4_sb_info
*qnx4_sb(struct super_block
*sb
)
135 return sb
->s_fs_info
;
138 static inline struct qnx4_inode_info
*qnx4_i(struct inode
*inode
)
140 return container_of(inode
, struct qnx4_inode_info
, vfs_inode
);
143 static inline struct qnx4_inode_entry
*qnx4_raw_inode(struct inode
*inode
)
145 return &qnx4_i(inode
)->raw
;
148 #endif /* __KERNEL__ */