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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 422 | giacomo | 1 | /* |
| 2 | * Name : qnx4_fs.h |
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| 3 | * Author : Richard Frowijn |
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| 4 | * Function : qnx4 global filesystem definitions |
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| 5 | * Version : 1.0.2 |
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| 6 | * Last modified : 2000-01-31 |
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| 7 | * |
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| 8 | * History : 23-03-1998 created |
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| 9 | */ |
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| 10 | #ifndef _LINUX_QNX4_FS_H |
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| 11 | #define _LINUX_QNX4_FS_H |
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| 12 | |||
| 13 | #include <linux/qnxtypes.h> |
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| 14 | |||
| 15 | #define QNX4_ROOT_INO 1 |
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| 16 | |||
| 17 | #define QNX4_MAX_XTNTS_PER_XBLK 60 |
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| 18 | /* for di_status */ |
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| 19 | #define QNX4_FILE_USED 0x01 |
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| 20 | #define QNX4_FILE_MODIFIED 0x02 |
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| 21 | #define QNX4_FILE_BUSY 0x04 |
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| 22 | #define QNX4_FILE_LINK 0x08 |
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| 23 | #define QNX4_FILE_INODE 0x10 |
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| 24 | #define QNX4_FILE_FSYSCLEAN 0x20 |
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| 25 | |||
| 26 | #define QNX4_I_MAP_SLOTS 8 |
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| 27 | #define QNX4_Z_MAP_SLOTS 64 |
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| 28 | #define QNX4_SUPER_MAGIC 0x002f /* qnx4 fs detection */ |
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| 29 | #define QNX4_VALID_FS 0x0001 /* Clean fs. */ |
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| 30 | #define QNX4_ERROR_FS 0x0002 /* fs has errors. */ |
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| 31 | #define QNX4_BLOCK_SIZE 0x200 /* blocksize of 512 bytes */ |
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| 32 | #define QNX4_BLOCK_SIZE_BITS 9 /* blocksize shift */ |
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| 33 | #define QNX4_DIR_ENTRY_SIZE 0x040 /* dir entry size of 64 bytes */ |
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| 34 | #define QNX4_DIR_ENTRY_SIZE_BITS 6 /* dir entry size shift */ |
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| 35 | #define QNX4_XBLK_ENTRY_SIZE 0x200 /* xblk entry size */ |
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| 36 | #define QNX4_INODES_PER_BLOCK 0x08 /* 512 / 64 */ |
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| 37 | |||
| 38 | /* for filenames */ |
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| 39 | #define QNX4_SHORT_NAME_MAX 16 |
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| 40 | #define QNX4_NAME_MAX 48 |
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| 41 | |||
| 42 | /* |
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| 43 | * This is the original qnx4 inode layout on disk. |
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| 44 | */ |
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| 45 | struct qnx4_inode_entry { |
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| 46 | char di_fname[QNX4_SHORT_NAME_MAX]; |
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| 47 | qnx4_off_t di_size; |
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| 48 | qnx4_xtnt_t di_first_xtnt; |
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| 49 | __u32 di_xblk; |
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| 50 | __s32 di_ftime; |
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| 51 | __s32 di_mtime; |
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| 52 | __s32 di_atime; |
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| 53 | __s32 di_ctime; |
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| 54 | qnx4_nxtnt_t di_num_xtnts; |
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| 55 | qnx4_mode_t di_mode; |
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| 56 | qnx4_muid_t di_uid; |
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| 57 | qnx4_mgid_t di_gid; |
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| 58 | qnx4_nlink_t di_nlink; |
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| 59 | __u8 di_zero[4]; |
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| 60 | qnx4_ftype_t di_type; |
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| 61 | __u8 di_status; |
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| 62 | }; |
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| 63 | |||
| 64 | struct qnx4_link_info { |
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| 65 | char dl_fname[QNX4_NAME_MAX]; |
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| 66 | __u32 dl_inode_blk; |
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| 67 | __u8 dl_inode_ndx; |
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| 68 | __u8 dl_spare[10]; |
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| 69 | __u8 dl_status; |
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| 70 | }; |
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| 71 | |||
| 72 | struct qnx4_xblk { |
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| 73 | __u32 xblk_next_xblk; |
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| 74 | __u32 xblk_prev_xblk; |
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| 75 | __u8 xblk_num_xtnts; |
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| 76 | __u8 xblk_spare[3]; |
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| 77 | __s32 xblk_num_blocks; |
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| 78 | qnx4_xtnt_t xblk_xtnts[QNX4_MAX_XTNTS_PER_XBLK]; |
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| 79 | char xblk_signature[8]; |
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| 80 | qnx4_xtnt_t xblk_first_xtnt; |
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| 81 | }; |
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| 82 | |||
| 83 | struct qnx4_super_block { |
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| 84 | struct qnx4_inode_entry RootDir; |
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| 85 | struct qnx4_inode_entry Inode; |
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| 86 | struct qnx4_inode_entry Boot; |
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| 87 | struct qnx4_inode_entry AltBoot; |
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| 88 | }; |
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| 89 | |||
| 90 | #ifdef __KERNEL__ |
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| 91 | |||
| 92 | #define QNX4_DEBUG 0 |
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| 93 | |||
| 94 | #if QNX4_DEBUG |
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| 95 | #define QNX4DEBUG(X) printk X |
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| 96 | #else |
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| 97 | #define QNX4DEBUG(X) (void) 0 |
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| 98 | #endif |
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| 99 | |||
| 100 | struct qnx4_sb_info { |
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| 101 | struct buffer_head *sb_buf; /* superblock buffer */ |
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| 102 | struct qnx4_super_block *sb; /* our superblock */ |
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| 103 | unsigned int Version; /* may be useful */ |
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| 104 | struct qnx4_inode_entry *BitMap; /* useful */ |
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| 105 | }; |
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| 106 | |||
| 107 | struct qnx4_inode_info { |
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| 108 | struct qnx4_inode_entry raw; |
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| 109 | loff_t mmu_private; |
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| 110 | struct inode vfs_inode; |
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| 111 | }; |
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| 112 | |||
| 113 | extern struct dentry *qnx4_lookup(struct inode *dir, struct dentry *dentry, struct nameidata *nd); |
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| 114 | extern unsigned long qnx4_count_free_blocks(struct super_block *sb); |
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| 115 | extern unsigned long qnx4_block_map(struct inode *inode, long iblock); |
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| 116 | |||
| 117 | extern struct buffer_head *qnx4_getblk(struct inode *, int, int); |
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| 118 | extern struct buffer_head *qnx4_bread(struct inode *, int, int); |
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| 119 | |||
| 120 | extern struct inode_operations qnx4_file_inode_operations; |
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| 121 | extern struct inode_operations qnx4_dir_inode_operations; |
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| 122 | extern struct file_operations qnx4_file_operations; |
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| 123 | extern struct file_operations qnx4_dir_operations; |
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| 124 | extern int qnx4_is_free(struct super_block *sb, long block); |
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| 125 | extern int qnx4_set_bitmap(struct super_block *sb, long block, int busy); |
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| 126 | extern int qnx4_create(struct inode *inode, struct dentry *dentry, int mode, struct nameidata *nd); |
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| 127 | extern void qnx4_truncate(struct inode *inode); |
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| 128 | extern void qnx4_free_inode(struct inode *inode); |
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| 129 | extern int qnx4_unlink(struct inode *dir, struct dentry *dentry); |
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| 130 | extern int qnx4_rmdir(struct inode *dir, struct dentry *dentry); |
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| 131 | extern int qnx4_sync_file(struct file *file, struct dentry *dentry, int); |
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| 132 | extern int qnx4_sync_inode(struct inode *inode); |
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| 133 | extern int qnx4_get_block(struct inode *inode, sector_t iblock, struct buffer_head *bh, int create); |
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| 134 | |||
| 135 | static inline struct qnx4_sb_info *qnx4_sb(struct super_block *sb) |
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| 136 | { |
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| 137 | return sb->s_fs_info; |
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| 138 | } |
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| 139 | |||
| 140 | static inline struct qnx4_inode_info *qnx4_i(struct inode *inode) |
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| 141 | { |
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| 142 | return container_of(inode, struct qnx4_inode_info, vfs_inode); |
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| 143 | } |
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| 144 | |||
| 145 | static inline struct qnx4_inode_entry *qnx4_raw_inode(struct inode *inode) |
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| 146 | { |
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| 147 | return &qnx4_i(inode)->raw; |
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| 148 | } |
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| 149 | |||
| 150 | #endif /* __KERNEL__ */ |
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| 151 | |||
| 152 | #endif |