include/linux/qnx4_fs.h

   1 /*
   2  *  Name                         : qnx4_fs.h
   3  *  Author                       : Richard Frowijn
   4  *  Function                     : qnx4 global filesystem definitions
   5  *  Version                      : 1.0.1
   6  *  Last modified                : 1999-12-13
   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_DIR_ENTRY_SIZE     0x040   /* dir entry size */
  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;
  47         unsigned long di_xblk;
  48         time_t di_ftime;
  49         time_t di_mtime;
  50         time_t di_atime;
  51         time_t di_ctime;
  52         qnx4_nxtnt_t di_num_xtnts;
  53         mode_t di_mode;
  54         qnx4_muid_t di_uid;
  55         qnx4_mgid_t di_gid;
  56         qnx4_nlink_t di_nlink;
  57         char di_zero[4];
  58         qnx4_ftype_t di_type;
  59         unsigned char di_status;
  60 };
  61
  62 struct qnx4_link_info {
  63         char dl_fname[QNX4_NAME_MAX];
  64         unsigned long dl_inode_blk;
  65         unsigned char dl_inode_ndx;
  66         unsigned char dl_spare[10];
  67         unsigned char dl_status;
  68 };
  69
  70 struct qnx4_xblk {
  71         unsigned long xblk_next_xblk;
  72         unsigned long xblk_prev_xblk;
  73         unsigned char xblk_num_xtnts;
  74         char xblk_spare[3];
  75         long xblk_num_blocks;
  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 extern struct dentry *qnx4_lookup(struct inode *dir, struct dentry *dentry);
  99 extern unsigned long qnx4_count_free_inodes(struct super_block *sb);
 100 extern unsigned long qnx4_count_free_blocks(struct super_block *sb);
 101 extern unsigned long qnx4_block_map(struct inode *inode, long iblock);
 102
 103 extern struct buffer_head *qnx4_getblk(struct inode *, int, int);
 104 extern struct buffer_head *qnx4_bread(struct inode *, int, int);
 105
 106 extern int init_qnx4_fs(void);
 107 extern int qnx4_create(struct inode *dir, struct dentry *dentry, int mode);
 108 extern struct inode_operations qnx4_file_inode_operations;
 109 extern struct inode_operations qnx4_dir_inode_operations;
 110 extern struct inode_operations qnx4_symlink_inode_operations;
 111 extern int qnx4_is_free(struct super_block *sb, long block);
 112 extern int qnx4_set_bitmap(struct super_block *sb, long block, int busy);
 113 extern int qnx4_create(struct inode *inode, struct dentry *dentry, int mode);
 114 extern void qnx4_truncate(struct inode *inode);
 115 extern void qnx4_free_inode(struct inode *inode);
 116 extern int qnx4_unlink(struct inode *dir, struct dentry *dentry);
 117 extern int qnx4_rmdir(struct inode *dir, struct dentry *dentry);
 118 extern int qnx4_sync_file(struct file *file, struct dentry *dentry);
 119 extern int qnx4_sync_inode(struct inode *inode);
 120 extern int qnx4_get_block(struct inode *inode, long iblock, struct buffer_head *bh, int create);
 121
 122 #endif                          /* __KERNEL__ */
 123
 124 #endif