Changeset 565b6ff in mainline for uspace/lib/ext4/libext4_directory_index.c

Timestamp:

2012-02-05T12:35:02Z (12 years ago)

Author:

Frantisek Princ <frantisek.princ@…>

Branches:

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

Children:

50601ef

Parents:

512a7df

Message:

• bugfix in adding directory entry (linear)
• added skeleton for using directory index (not used yet)

File:

• uspace/lib/ext4/libext4_directory_index.c (modified) (2 diffs)

uspace/lib/ext4/libext4_directory_index.c

@@ -391 +391 @@
         }
 
+        // Hardcoded number 2 means maximum height of index tree !!!
         ext4_directory_dx_block_t dx_blocks[2];
         ext4_directory_dx_block_t *dx_block;
@@ -449 +450 @@
 }
 
+int ext4_directory_dx_add_entry(ext4_filesystem_t *fs,
+                ext4_inode_ref_t *parent, size_t name_size, const char *name)
+{
+        // TODO delete this command
+        return EXT4_ERR_BAD_DX_DIR;
+
+        EXT4FS_DBG("NOT REACHED");
+
+        int rc;
+
+        // get direct block 0 (index root)
+        uint32_t root_block_addr;
+        rc = ext4_filesystem_get_inode_data_block_index(fs, parent->inode, 0, &root_block_addr);
+        if (rc != EOK) {
+                return rc;
+        }
+
+        block_t *root_block;
+        rc = block_get(&root_block, fs->device, root_block_addr, BLOCK_FLAGS_NONE);
+        if (rc != EOK) {
+                return rc;
+        }
+
+        ext4_hash_info_t hinfo;
+        rc = ext4_directory_hinfo_init(&hinfo, root_block, fs->superblock, name_size, name);
+        if (rc != EOK) {
+                block_put(root_block);
+                return EXT4_ERR_BAD_DX_DIR;
+        }
+
+        // Hardcoded number 2 means maximum height of index tree !!!
+        ext4_directory_dx_block_t dx_blocks[2];
+        ext4_directory_dx_block_t *dx_block;
+        rc = ext4_directory_dx_get_leaf(&hinfo, fs, parent->inode, root_block, &dx_block, dx_blocks);
+        if (rc != EOK) {
+                block_put(root_block);
+                return EXT4_ERR_BAD_DX_DIR;
+        }
+
+        // TODO
+        /*
+         * 1) try to write entry
+         * 2) split leaves if necessary
+         * 3) return
+         */
+
+
+}