@@ -1482,7 +1482,7 @@ static bool ext4_match(struct inode *parent,
}
/*
- * Returns 0 if not found, -1 on failure, and 1 on success
+ * Returns 0 if not found, -EFSCORRUPTED on failure, and 1 on success
*/
int ext4_search_dir(struct buffer_head *bh, char *search_buf, int buf_size,
struct inode *dir, struct ext4_filename *fname,
@@ -1503,7 +1503,7 @@ int ext4_search_dir(struct buffer_head *bh, char *search_buf, int buf_size,
* a full check */
if (ext4_check_dir_entry(dir, NULL, de, bh, search_buf,
buf_size, offset))
- return -1;
+ return -EFSCORRUPTED;
*res_dir = de;
return 1;
}
@@ -1511,7 +1511,7 @@ int ext4_search_dir(struct buffer_head *bh, char *search_buf, int buf_size,
de_len = ext4_rec_len_from_disk(de->rec_len,
dir->i_sb->s_blocksize);
if (de_len <= 0)
- return -1;
+ return -EFSCORRUPTED;
offset += de_len;
de = (struct ext4_dir_entry_2 *) ((char *) de + de_len);
}
@@ -1663,8 +1663,10 @@ static struct buffer_head *__ext4_find_entry(struct inode *dir,
goto cleanup_and_exit;
} else {
brelse(bh);
- if (i < 0)
+ if (i < 0) {
+ ret = ERR_PTR(i);
goto cleanup_and_exit;
+ }
}
next:
if (++block >= nblocks)
@@ -1758,7 +1760,7 @@ static struct buffer_head * ext4_dx_find_entry(struct inode *dir,
if (retval == 1)
goto success;
brelse(bh);
- if (retval == -1) {
+ if (retval < 0) {
bh = ERR_PTR(ERR_BAD_DX_DIR);
goto errout;
}
ext4_search_dir currently returns -1 in case of a failure, while it returns 0 when the name is not found. In such failure cases, it should return an error code instead. This becomes even more important when ext4_find_inline_entry returns an error code as well in the next commit. -EFSCORRUPTED seems appropriate as such error code as these failures would be caused by unexpected record lengths and is in line with other instances of ext4_check_dir_entry failures. In the case of ext4_dx_find_entry, the current use of ERR_BAD_DX_DIR was left as is to reduce the risk of regressions. Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@igalia.com> --- fs/ext4/namei.c | 12 +++++++----- 1 file changed, 7 insertions(+), 5 deletions(-)