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-rw-r--r--fs/efs/dir.c85
1 files changed, 46 insertions, 39 deletions
diff --git a/fs/efs/dir.c b/fs/efs/dir.c
index 483efd85a..00d1f3e2e 100644
--- a/fs/efs/dir.c
+++ b/fs/efs/dir.c
@@ -2,11 +2,9 @@
* dir.c
*
* Copyright (c) 1999 Al Smith
- *
- * Portions derived from work (c) 1995,1996 Christian Vogelgsang.
*/
-#include <linux/efs.h>
+#include <linux/efs_fs.h>
static int efs_readdir(struct file *, void *, filldir_t);
@@ -47,73 +45,82 @@ struct inode_operations efs_dir_inode_operations = {
static int efs_readdir(struct file *filp, void *dirent, filldir_t filldir) {
struct inode *inode = filp->f_dentry->d_inode;
- struct efs_in_info *ini = (struct efs_in_info *) &inode->u.generic_ip;
+ struct efs_inode_info *ini = (struct efs_inode_info *) &inode->u.generic_ip;
struct buffer_head *bh;
struct efs_dir *dirblock;
struct efs_dentry *dirslot;
efs_ino_t inodenum;
efs_block_t block;
- int slot, namelen, numslots;
+ int slot, namelen;
char *nameptr;
- if (!inode || !S_ISDIR(inode->i_mode))
+ if (!inode || !S_ISDIR(inode->i_mode))
return -EBADF;
-
+
if (ini->numextents != 1)
printk("EFS: WARNING: readdir(): more than one extent\n");
if (inode->i_size & (EFS_BLOCKSIZE-1))
printk("EFS: WARNING: readdir(): directory size not a multiple of EFS_BLOCKSIZE\n");
- /* work out the block where this entry can be found */
+ /* work out where this entry can be found */
block = filp->f_pos >> EFS_BLOCKSIZE_BITS;
-
- /* don't read past last entry */
- if (block > inode->i_blocks) return 0;
+ slot = filp->f_pos & 0xff;
- /* read the dir block */
- bh = bread(inode->i_dev, efs_bmap(inode, block), EFS_BLOCKSIZE);
+ /* look at all blocks */
+ while (block <= inode->i_blocks) {
+ /* read the dir block */
+ bh = bread(inode->i_dev, efs_bmap(inode, block), EFS_BLOCKSIZE);
- if (!bh) {
- printk("EFS: readdir(): failed to read dir block %d\n", block);
- return 0;
- }
+ if (!bh) {
+ printk("EFS: readdir(): failed to read dir block %d\n", block);
+ break;
+ }
- dirblock = (struct efs_dir *) bh->b_data;
+ dirblock = (struct efs_dir *) bh->b_data;
- if (be16_to_cpu(dirblock->magic) != EFS_DIRBLK_MAGIC) {
- printk("EFS: readdir(): invalid directory block\n");
- brelse(bh);
- return(0);
- }
+ if (be16_to_cpu(dirblock->magic) != EFS_DIRBLK_MAGIC) {
+ printk("EFS: readdir(): invalid directory block\n");
+ brelse(bh);
+ break;
+ }
- slot = filp->f_pos & 0xff;
+ while(slot < dirblock->slots) {
+ dirslot = (struct efs_dentry *) (((char *) bh->b_data) + EFS_SLOTAT(dirblock, slot));
- dirslot = (struct efs_dentry *) (((char *) bh->b_data) + EFS_SLOTAT(dirblock, slot));
-
- numslots = dirblock->slots;
- inodenum = be32_to_cpu(dirslot->inode);
- namelen = dirslot->namelen;
- nameptr = dirslot->name;
+ inodenum = be32_to_cpu(dirslot->inode);
+ namelen = dirslot->namelen;
+ nameptr = dirslot->name;
#ifdef DEBUG
- printk("EFS: dent #%d: inode %u, name \"%s\", namelen %u\n", slot, inodenum, nameptr, namelen);
+ printk("EFS: block %d slot %d/%d: inode %u, name \"%s\", namelen %u\n", block, slot, numslots, inodenum, nameptr, namelen);
#endif
+ if (namelen > 0) {
+ /* found the next entry */
+ filp->f_pos = (block << EFS_BLOCKSIZE_BITS) | slot;
+
+ /* copy filename and data in dirslot */
+ filldir(dirent, nameptr, namelen, filp->f_pos, inodenum);
+
+ /* store position of next slot */
+ if (++slot == dirblock->slots) {
+ slot = 0;
+ block++;
+ }
+ brelse(bh);
+ filp->f_pos = (block << EFS_BLOCKSIZE_BITS) | slot;
+ return 0;
+ }
+ slot++;
+ }
+ brelse(bh);
- /* copy filename and data in dirslot */
- filldir(dirent, nameptr, namelen, filp->f_pos, inodenum);
-
- brelse(bh);
-
- /* store position of next slot */
- if (++slot == numslots) {
slot = 0;
block++;
}
filp->f_pos = (block << EFS_BLOCKSIZE_BITS) | slot;
-
return 0;
}