Changeset ed6fdc7 in mainline for uspace/lib/ext4/libext4_directory.c

Timestamp:

2012-01-25T18:02:28Z (13 years ago)

Author:

Frantisek Princ <frantisek.princ@…>

Branches:

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

Children:

3ce5162

Parents:

db2f654

Message:

Bugfix during new block allocation

File:

• uspace/lib/ext4/libext4_directory.c (modified) (4 diffs)

uspace/lib/ext4/libext4_directory.c

@@ -260 +260 @@
 }
 
-/**
- * Fill data block with invalid directory entry.
- */
-static int ext4_directory_init_block(ext4_filesystem_t *fs, uint32_t fblock)
-{
-        int rc;
-
-        block_t *block;
-        rc = block_get(&block, fs->device, fblock, BLOCK_FLAGS_NOREAD);
-        if (rc != EOK) {
-                return rc;
-        }
-
-        ext4_directory_entry_ll_t *entry = block->data;
-        uint32_t block_size = ext4_superblock_get_block_size(fs->superblock);
-
-        ext4_directory_entry_ll_set_entry_length(entry, block_size);
-        ext4_directory_entry_ll_set_inode(entry, 0);
-        ext4_directory_entry_ll_set_name_length(fs->superblock, entry, 0);
-        entry->name[0] = 0;
-
-        block->dirty = true;
-        return block_put(block);
-}
-
 int ext4_directory_add_entry(ext4_filesystem_t *fs, ext4_inode_ref_t * inode_ref,
                 const char *entry_name, ext4_inode_ref_t *child)
 {
-        EXT4FS_DBG("adding dentry \%s to inode \%u", entry_name, child->index);
+        EXT4FS_DBG("adding dentry \%s to child inode \%u to directory \%u", entry_name, child->index, inode_ref->index);
 
         int rc;
@@ -306 +281 @@
                 uint32_t entry_inode = ext4_directory_entry_ll_get_inode(it.current);
                 uint16_t rec_len = ext4_directory_entry_ll_get_entry_length(it.current);
+
+                EXT4FS_DBG("inode = \%u, rec_len == \%u, required_len = \%u", entry_inode, rec_len, required_len);
 
                 if ((entry_inode == 0) && (rec_len >= required_len)) {
@@ -320 +297 @@
                                         fs->superblock, it.current);
                         uint16_t free_space = rec_len - 8 - (used_name_len + (4- used_name_len % 4));
-
-                        EXT4FS_DBG("rec_len = \%u, free_space == \%u, required_len = \%u", rec_len, free_space, required_len);
 
                         if (free_space >= required_len) {
@@ -388 +363 @@
                 }
 
+                uint64_t inode_size = ext4_inode_get_size(fs->superblock, inode_ref->inode);
+                inode_size += block_size;
+                ext4_inode_set_size(inode_ref->inode, inode_size);
+
                 inode_ref->dirty = true;
-
-                rc = ext4_directory_init_block(fs, fblock);
-                if (rc != EOK) {
-                        return rc;
-                }
-        }
-
-        rc = ext4_directory_iterator_init(&it, fs, inode_ref, pos);
+        }
+
+        // Load block
+        block_t *new_block;
+        rc = block_get(&new_block, fs->device, fblock, BLOCK_FLAGS_NOREAD);
         if (rc != EOK) {
                 return rc;
         }
 
-        // Entry length is not affected
-        ext4_directory_entry_ll_set_inode(it.current, child->index);
-        ext4_directory_entry_ll_set_name_length(fs->superblock, it.current, name_len);
-        memcpy(it.current->name, entry_name, name_len);
-
-        it.current_block->dirty = true;
-
-        return ext4_directory_iterator_fini(&it);
+        ext4_directory_entry_ll_t *block_entry = new_block->data;
+
+        ext4_directory_entry_ll_set_entry_length(block_entry, block_size);
+        ext4_directory_entry_ll_set_inode(block_entry, child->index);
+        ext4_directory_entry_ll_set_name_length(fs->superblock, block_entry, name_len);
+        memcpy(block_entry->name, entry_name, name_len);
+
+        new_block->dirty = true;
+        rc = block_put(new_block);
+        if (rc != EOK) {
+                return rc;
+        }
+
+        return EOK;
 }