Changeset 936132f in mainline for uspace/lib/ext4/libext4_extent.c

Timestamp:

2012-04-08T12:19:12Z (13 years ago)

Author:

Frantisek Princ <frantisek.princ@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

b73530a

Parents:

847f2cb

Message:

extent file initialization and allocation

File:

• uspace/lib/ext4/libext4_extent.c (modified) (2 diffs)

uspace/lib/ext4/libext4_extent.c

@@ -550 +550 @@
         uint64_t inode_size = ext4_inode_get_size(sb, inode_ref->inode);
 
-        ext4_extent_header_t *header =
-                        ext4_inode_get_extent_header(inode_ref->inode);
-
-        // Initialize if empty inode
-        if (inode_size == 0) {
-                ext4_extent_t *first = EXT4_EXTENT_FIRST(header);
-                ext4_extent_set_block_count(first, 0);
-                ext4_extent_set_first_block(first, 0);
-                ext4_extent_set_start(first, 0);
-
-                ext4_extent_header_set_depth(header, 0);
-                ext4_extent_header_set_entries_count(header, 1);
-        }
-
         uint32_t block_size = ext4_superblock_get_block_size(sb);
         uint32_t new_block_idx = inode_size / block_size;
@@ -579 +565 @@
         }
 
-        // Check if extent exists
-        assert(path_ptr->extent != NULL);
+        // if extent == NULL -> add extent to leaf
+        if (path_ptr->extent == NULL) {
+                ext4_extent_t *ext = EXT4_EXTENT_FIRST(path_ptr->header);
+                ext4_extent_set_block_count(ext, 0);
+
+                ext4_extent_header_set_entries_count(path_ptr->header, 1);
+
+                path_ptr->extent = ext;
+        }
 
         uint32_t phys_block;