FIX: extra_isize field is 0

lwext4/ext4_fs.c

@@ -799,6 +799,7 @@ int ext4_fs_alloc_inode(struct ext4_fs *fs, struct ext4_inode_ref *inode_ref,
 {
 	/* Check if newly allocated i-node will be a directory */
 	bool is_dir;
+	uint16_t inode_size = ext4_get16(&fs->sb, inode_size);
 
 	is_dir = (filetype == EXT4_DIRENTRY_DIR);
 
@@ -850,6 +851,11 @@ int ext4_fs_alloc_inode(struct ext4_fs *fs, struct ext4_inode_ref *inode_ref,
 	ext4_inode_set_blocks_count(&fs->sb, inode, 0);
 	ext4_inode_set_flags(inode, 0);
 	ext4_inode_set_generation(inode, 0);
+	if (inode_size > EXT4_GOOD_OLD_INODE_SIZE)
+		ext4_inode_set_extra_isize(inode,
+				sizeof(struct ext4_inode) -
+				ext4_offsetof(struct ext4_inode,
+					extra_isize));
 
 	/* Reset blocks array. For symbolic link inode, just
 	 * fill in blocks with 0 */

lwext4/ext4_inode.c

@@ -271,6 +271,16 @@ void ext4_inode_set_generation(struct ext4_inode *inode, uint32_t gen)
 	inode->generation = to_le32(gen);
 }
 
+uint16_t ext4_inode_get_extra_isize(struct ext4_inode *inode)
+{
+	return to_le16(inode->extra_isize);
+}
+
+void ext4_inode_set_extra_isize(struct ext4_inode *inode, uint16_t size)
+{
+	inode->extra_isize = to_le16(size);
+}
+
 uint64_t ext4_inode_get_file_acl(struct ext4_inode *inode,
 				 struct ext4_sblock *sb)
 {

lwext4/ext4_inode.h

@@ -199,6 +199,18 @@ uint32_t ext4_inode_get_generation(struct ext4_inode *inode);
  */
 void ext4_inode_set_generation(struct ext4_inode *inode, uint32_t gen);
 
+/**@brief Get extra I-node size field.
+ * @param inode      I-node
+ * @return extra I-node size
+ */
+uint16_t ext4_inode_get_extra_isize(struct ext4_inode *inode);
+
+/**@brief Set extra I-node size field.
+ * @param inode      I-node
+ * @param size       extra I-node size
+ */
+void ext4_inode_set_extra_isize(struct ext4_inode *inode, uint16_t size);
+
 /**@brief Get address of block, where are extended attributes located.
  * @param inode I-node
  * @param sb    Superblock