* valid_blk.c --- does the inode have valid blocks?
*
* Copyright 1997 by Theodore Ts'o
- *
+ *
* %Begin-Header%
- * This file may be redistributed under the terms of the GNU Public
- * License.
+ * This file may be redistributed under the terms of the GNU Library
+ * General Public License, version 2.
* %End-Header%
- *
*/
+#include "config.h"
#include <stdio.h>
#if HAVE_UNISTD_H
#include <unistd.h>
#include <string.h>
#include <time.h>
-#include <linux/ext2_fs.h>
-
+#include "ext2_fs.h"
#include "ext2fs.h"
/*
* This function returns 1 if the inode's block entries actually
* contain block entries.
*/
-int ext2fs_inode_has_valid_blocks(struct ext2_inode *inode)
+int ext2fs_inode_has_valid_blocks2(ext2_filsys fs, struct ext2_inode *inode)
{
/*
* Only directories, regular files, and some symbolic links
if (!LINUX_S_ISDIR(inode->i_mode) && !LINUX_S_ISREG(inode->i_mode) &&
!LINUX_S_ISLNK(inode->i_mode))
return 0;
-
+
/*
* If the symbolic link is a "fast symlink", then the symlink
* target is stored in the block entries.
*/
- if (LINUX_S_ISLNK (inode->i_mode) && inode->i_blocks == 0 &&
- inode->i_size < EXT2_N_BLOCKS * sizeof (unsigned long))
- return 0;
+ if (LINUX_S_ISLNK (inode->i_mode)) {
+ if (ext2fs_file_acl_block(fs, inode) == 0) {
+ /* With no EA block, we can rely on i_blocks */
+ if (inode->i_blocks == 0)
+ return 0;
+ } else {
+ /* With an EA block, life gets more tricky */
+ if (inode->i_size >= EXT2_N_BLOCKS*4)
+ return 1; /* definitely using i_block[] */
+ if (inode->i_size > 4 && inode->i_block[1] == 0)
+ return 1; /* definitely using i_block[] */
+ return 0; /* Probably a fast symlink */
+ }
+ }
+ /*
+ * If this inode has inline data, it shouldn't have valid block
+ * entries.
+ */
+ if (inode->i_flags & EXT4_INLINE_DATA_FL)
+ return 0;
return 1;
}
+
+int ext2fs_inode_has_valid_blocks(struct ext2_inode *inode)
+{
+ return ext2fs_inode_has_valid_blocks2(NULL, inode);
+}