if (ext4_check_dir_entry(dir, NULL, de, bh,
(block<<EXT4_BLOCK_SIZE_BITS(dir->i_sb))
+ ((char *)de - bh->b_data))) {
- /* On error, skip the f_pos to the next block. */
- dir_file->f_pos = (dir_file->f_pos |
- (dir->i_sb->s_blocksize - 1)) + 1;
- brelse(bh);
- return count;
+ /* silently ignore the rest of the block */
+ break;
}
ext4fs_dirhash(de->name, de->name_len, hinfo);
if ((hinfo->hash < start_hash) ||
EXT4_ERROR_INODE(dir, "bad inode number: %u", ino);
return ERR_PTR(-EIO);
}
- inode = ext4_iget(dir->i_sb, ino);
+ if (unlikely(ino == dir->i_ino)) {
+ EXT4_ERROR_INODE(dir, "'%.*s' linked to parent dir",
+ dentry->d_name.len,
+ dentry->d_name.name);
+ return ERR_PTR(-EIO);
+ }
+ inode = ext4_iget_normal(dir->i_sb, ino);
if (inode == ERR_PTR(-ESTALE)) {
EXT4_ERROR_INODE(dir,
"deleted inode referenced: %u",
return ERR_PTR(-EIO);
}
- return d_obtain_alias(ext4_iget(child->d_inode->i_sb, ino));
+ return d_obtain_alias(ext4_iget_normal(child->d_inode->i_sb, ino));
}
#define S_SHIFT 12
hinfo.hash_version += EXT4_SB(dir->i_sb)->s_hash_unsigned;
hinfo.seed = EXT4_SB(dir->i_sb)->s_hash_seed;
ext4fs_dirhash(name, namelen, &hinfo);
+ memset(frames, 0, sizeof(frames));
frame = frames;
frame->entries = entries;
frame->at = entries;
frame->bh = bh;
- bh = bh2;
- ext4_handle_dirty_metadata(handle, dir, frame->bh);
- ext4_handle_dirty_metadata(handle, dir, bh);
+ retval = ext4_handle_dirty_metadata(handle, dir, frame->bh);
+ if (retval)
+ goto out_frames;
+ retval = ext4_handle_dirty_metadata(handle, dir, bh2);
+ if (retval)
+ goto out_frames;
- de = do_split(handle,dir, &bh, frame, &hinfo, &retval);
+ de = do_split(handle,dir, &bh2, frame, &hinfo, &retval);
if (!de) {
- /*
- * Even if the block split failed, we have to properly write
- * out all the changes we did so far. Otherwise we can end up
- * with corrupted filesystem.
- */
- ext4_mark_inode_dirty(handle, dir);
- dx_release(frames);
- return retval;
+ goto out_frames;
}
- dx_release(frames);
- retval = add_dirent_to_buf(handle, dentry, inode, de, bh);
- brelse(bh);
+ retval = add_dirent_to_buf(handle, dentry, inode, de, bh2);
+out_frames:
+ /*
+ * Even if the block split failed, we have to properly write
+ * out all the changes we did so far. Otherwise we can end up
+ * with corrupted filesystem.
+ */
+ if (retval)
+ ext4_mark_inode_dirty(handle, dir);
+ dx_release(frames);
+ brelse(bh2);
return retval;
}
struct inode *inode)
{
struct inode *dir = dentry->d_parent->d_inode;
- struct buffer_head *bh;
+ struct buffer_head *bh = NULL;
struct ext4_dir_entry_2 *de;
struct super_block *sb;
int retval;
if (is_dx(dir)) {
retval = ext4_dx_add_entry(handle, dentry, inode);
if (!retval || (retval != ERR_BAD_DX_DIR))
- return retval;
+ goto out;
ext4_clear_inode_flag(dir, EXT4_INODE_INDEX);
dx_fallback++;
ext4_mark_inode_dirty(handle, dir);
if(!bh)
return retval;
retval = add_dirent_to_buf(handle, dentry, inode, NULL, bh);
- if (retval != -ENOSPC) {
- brelse(bh);
- return retval;
- }
+ if (retval != -ENOSPC)
+ goto out;
if (blocks == 1 && !dx_fallback &&
- EXT4_HAS_COMPAT_FEATURE(sb, EXT4_FEATURE_COMPAT_DIR_INDEX))
- return make_indexed_dir(handle, dentry, inode, bh);
+ EXT4_HAS_COMPAT_FEATURE(sb, EXT4_FEATURE_COMPAT_DIR_INDEX)) {
+ retval = make_indexed_dir(handle, dentry, inode, bh);
+ bh = NULL; /* make_indexed_dir releases bh */
+ goto out;
+ }
brelse(bh);
}
bh = ext4_append(handle, dir, &block, &retval);
de->inode = 0;
de->rec_len = ext4_rec_len_to_disk(blocksize, blocksize);
retval = add_dirent_to_buf(handle, dentry, inode, de, bh);
+out:
brelse(bh);
if (retval == 0)
ext4_set_inode_state(inode, EXT4_STATE_NEWENTRY);
err = PTR_ERR(inode);
if (!IS_ERR(inode)) {
init_special_inode(inode, inode->i_mode, rdev);
-#ifdef CONFIG_EXT4_FS_XATTR
inode->i_op = &ext4_special_inode_operations;
-#endif
err = ext4_add_nondir(handle, dentry, inode);
}
ext4_journal_stop(handle);
struct ext4_iloc iloc;
int err = 0, rc;
- if (!ext4_handle_valid(handle))
+ if (!EXT4_SB(sb)->s_journal || is_bad_inode(inode))
return 0;
mutex_lock(&EXT4_SB(sb)->s_orphan_lock);
struct ext4_iloc iloc;
int err = 0;
- /* ext4_handle_valid() assumes a valid handle_t pointer */
- if (handle && !ext4_handle_valid(handle))
+ if (!EXT4_SB(inode->i_sb)->s_journal &&
+ !(EXT4_SB(inode->i_sb)->s_mount_state & EXT4_ORPHAN_FS))
return 0;
mutex_lock(&EXT4_SB(inode->i_sb)->s_orphan_lock);
* transaction handle with which to update the orphan list on
* disk, but we still need to remove the inode from the linked
* list in memory. */
- if (sbi->s_journal && !handle)
+ if (!handle)
goto out;
err = ext4_reserve_inode_write(handle, inode, &iloc);