2 * QNX4 file system, Linux implementation.
6 * Using parts of the xiafs filesystem.
10 * 28-05-1998 by Richard Frowijn : first release.
11 * 20-06-1998 by Frank Denis : Linux 2.1.99+ & dcache support.
14 #include <linux/smp_lock.h>
15 #include <linux/buffer_head.h>
18 static int qnx4_readdir(struct file
*filp
, void *dirent
, filldir_t filldir
)
20 struct inode
*inode
= filp
->f_path
.dentry
->d_inode
;
22 struct buffer_head
*bh
;
23 struct qnx4_inode_entry
*de
;
24 struct qnx4_link_info
*le
;
29 QNX4DEBUG(("qnx4_readdir:i_size = %ld\n", (long) inode
->i_size
));
30 QNX4DEBUG(("filp->f_pos = %ld\n", (long) filp
->f_pos
));
34 while (filp
->f_pos
< inode
->i_size
) {
35 blknum
= qnx4_block_map( inode
, filp
->f_pos
>> QNX4_BLOCK_SIZE_BITS
);
36 bh
= sb_bread(inode
->i_sb
, blknum
);
38 printk(KERN_ERR
"qnx4_readdir: bread failed (%ld)\n", blknum
);
41 ix
= (int)(filp
->f_pos
>> QNX4_DIR_ENTRY_SIZE_BITS
) % QNX4_INODES_PER_BLOCK
;
42 while (ix
< QNX4_INODES_PER_BLOCK
) {
43 offset
= ix
* QNX4_DIR_ENTRY_SIZE
;
44 de
= (struct qnx4_inode_entry
*) (bh
->b_data
+ offset
);
45 size
= strlen(de
->di_fname
);
47 if ( !( de
->di_status
& QNX4_FILE_LINK
) && size
> QNX4_SHORT_NAME_MAX
)
48 size
= QNX4_SHORT_NAME_MAX
;
49 else if ( size
> QNX4_NAME_MAX
)
52 if ( ( de
->di_status
& (QNX4_FILE_USED
|QNX4_FILE_LINK
) ) != 0 ) {
53 QNX4DEBUG(("qnx4_readdir:%.*s\n", size
, de
->di_fname
));
54 if ( ( de
->di_status
& QNX4_FILE_LINK
) == 0 )
55 ino
= blknum
* QNX4_INODES_PER_BLOCK
+ ix
- 1;
57 le
= (struct qnx4_link_info
*)de
;
58 ino
= ( le32_to_cpu(le
->dl_inode_blk
) - 1 ) *
59 QNX4_INODES_PER_BLOCK
+
62 if (filldir(dirent
, de
->di_fname
, size
, filp
->f_pos
, ino
, DT_UNKNOWN
) < 0) {
69 filp
->f_pos
+= QNX4_DIR_ENTRY_SIZE
;
78 const struct file_operations qnx4_dir_operations
=
80 .read
= generic_read_dir
,
81 .readdir
= qnx4_readdir
,
82 .fsync
= simple_fsync
,
85 const struct inode_operations qnx4_dir_inode_operations
=
87 .lookup
= qnx4_lookup
,
88 #ifdef CONFIG_QNX4FS_RW
89 .create
= qnx4_create
,
90 .unlink
= qnx4_unlink
,