152 строки
4.3 KiB
C
152 строки
4.3 KiB
C
/*
|
|
* Name : qnx4_fs.h
|
|
* Author : Richard Frowijn
|
|
* Function : qnx4 global filesystem definitions
|
|
* Version : 1.0.2
|
|
* Last modified : 2000-01-31
|
|
*
|
|
* History : 23-03-1998 created
|
|
*/
|
|
#ifndef _LINUX_QNX4_FS_H
|
|
#define _LINUX_QNX4_FS_H
|
|
|
|
#include <linux/qnxtypes.h>
|
|
#include <linux/magic.h>
|
|
|
|
#define QNX4_ROOT_INO 1
|
|
|
|
#define QNX4_MAX_XTNTS_PER_XBLK 60
|
|
/* for di_status */
|
|
#define QNX4_FILE_USED 0x01
|
|
#define QNX4_FILE_MODIFIED 0x02
|
|
#define QNX4_FILE_BUSY 0x04
|
|
#define QNX4_FILE_LINK 0x08
|
|
#define QNX4_FILE_INODE 0x10
|
|
#define QNX4_FILE_FSYSCLEAN 0x20
|
|
|
|
#define QNX4_I_MAP_SLOTS 8
|
|
#define QNX4_Z_MAP_SLOTS 64
|
|
#define QNX4_VALID_FS 0x0001 /* Clean fs. */
|
|
#define QNX4_ERROR_FS 0x0002 /* fs has errors. */
|
|
#define QNX4_BLOCK_SIZE 0x200 /* blocksize of 512 bytes */
|
|
#define QNX4_BLOCK_SIZE_BITS 9 /* blocksize shift */
|
|
#define QNX4_DIR_ENTRY_SIZE 0x040 /* dir entry size of 64 bytes */
|
|
#define QNX4_DIR_ENTRY_SIZE_BITS 6 /* dir entry size shift */
|
|
#define QNX4_XBLK_ENTRY_SIZE 0x200 /* xblk entry size */
|
|
#define QNX4_INODES_PER_BLOCK 0x08 /* 512 / 64 */
|
|
|
|
/* for filenames */
|
|
#define QNX4_SHORT_NAME_MAX 16
|
|
#define QNX4_NAME_MAX 48
|
|
|
|
/*
|
|
* This is the original qnx4 inode layout on disk.
|
|
*/
|
|
struct qnx4_inode_entry {
|
|
char di_fname[QNX4_SHORT_NAME_MAX];
|
|
qnx4_off_t di_size;
|
|
qnx4_xtnt_t di_first_xtnt;
|
|
__le32 di_xblk;
|
|
__le32 di_ftime;
|
|
__le32 di_mtime;
|
|
__le32 di_atime;
|
|
__le32 di_ctime;
|
|
qnx4_nxtnt_t di_num_xtnts;
|
|
qnx4_mode_t di_mode;
|
|
qnx4_muid_t di_uid;
|
|
qnx4_mgid_t di_gid;
|
|
qnx4_nlink_t di_nlink;
|
|
__u8 di_zero[4];
|
|
qnx4_ftype_t di_type;
|
|
__u8 di_status;
|
|
};
|
|
|
|
struct qnx4_link_info {
|
|
char dl_fname[QNX4_NAME_MAX];
|
|
__le32 dl_inode_blk;
|
|
__u8 dl_inode_ndx;
|
|
__u8 dl_spare[10];
|
|
__u8 dl_status;
|
|
};
|
|
|
|
struct qnx4_xblk {
|
|
__le32 xblk_next_xblk;
|
|
__le32 xblk_prev_xblk;
|
|
__u8 xblk_num_xtnts;
|
|
__u8 xblk_spare[3];
|
|
__le32 xblk_num_blocks;
|
|
qnx4_xtnt_t xblk_xtnts[QNX4_MAX_XTNTS_PER_XBLK];
|
|
char xblk_signature[8];
|
|
qnx4_xtnt_t xblk_first_xtnt;
|
|
};
|
|
|
|
struct qnx4_super_block {
|
|
struct qnx4_inode_entry RootDir;
|
|
struct qnx4_inode_entry Inode;
|
|
struct qnx4_inode_entry Boot;
|
|
struct qnx4_inode_entry AltBoot;
|
|
};
|
|
|
|
#ifdef __KERNEL__
|
|
|
|
#define QNX4_DEBUG 0
|
|
|
|
#if QNX4_DEBUG
|
|
#define QNX4DEBUG(X) printk X
|
|
#else
|
|
#define QNX4DEBUG(X) (void) 0
|
|
#endif
|
|
|
|
struct qnx4_sb_info {
|
|
struct buffer_head *sb_buf; /* superblock buffer */
|
|
struct qnx4_super_block *sb; /* our superblock */
|
|
unsigned int Version; /* may be useful */
|
|
struct qnx4_inode_entry *BitMap; /* useful */
|
|
};
|
|
|
|
struct qnx4_inode_info {
|
|
struct qnx4_inode_entry raw;
|
|
loff_t mmu_private;
|
|
struct inode vfs_inode;
|
|
};
|
|
|
|
extern struct inode *qnx4_iget(struct super_block *, unsigned long);
|
|
extern struct dentry *qnx4_lookup(struct inode *dir, struct dentry *dentry, struct nameidata *nd);
|
|
extern unsigned long qnx4_count_free_blocks(struct super_block *sb);
|
|
extern unsigned long qnx4_block_map(struct inode *inode, long iblock);
|
|
|
|
extern struct buffer_head *qnx4_bread(struct inode *, int, int);
|
|
|
|
extern const struct inode_operations qnx4_file_inode_operations;
|
|
extern const struct inode_operations qnx4_dir_inode_operations;
|
|
extern const struct file_operations qnx4_file_operations;
|
|
extern const struct file_operations qnx4_dir_operations;
|
|
extern int qnx4_is_free(struct super_block *sb, long block);
|
|
extern int qnx4_set_bitmap(struct super_block *sb, long block, int busy);
|
|
extern int qnx4_create(struct inode *inode, struct dentry *dentry, int mode, struct nameidata *nd);
|
|
extern void qnx4_truncate(struct inode *inode);
|
|
extern void qnx4_free_inode(struct inode *inode);
|
|
extern int qnx4_unlink(struct inode *dir, struct dentry *dentry);
|
|
extern int qnx4_rmdir(struct inode *dir, struct dentry *dentry);
|
|
extern int qnx4_sync_file(struct file *file, struct dentry *dentry, int);
|
|
extern int qnx4_sync_inode(struct inode *inode);
|
|
|
|
static inline struct qnx4_sb_info *qnx4_sb(struct super_block *sb)
|
|
{
|
|
return sb->s_fs_info;
|
|
}
|
|
|
|
static inline struct qnx4_inode_info *qnx4_i(struct inode *inode)
|
|
{
|
|
return container_of(inode, struct qnx4_inode_info, vfs_inode);
|
|
}
|
|
|
|
static inline struct qnx4_inode_entry *qnx4_raw_inode(struct inode *inode)
|
|
{
|
|
return &qnx4_i(inode)->raw;
|
|
}
|
|
|
|
#endif /* __KERNEL__ */
|
|
|
|
#endif
|