Index: uspace/srv/fs/ext4fs/ext4fs_ops.c
===================================================================
--- uspace/srv/fs/ext4fs/ext4fs_ops.c	(revision feeac0d8cd6e0ce736779bc5f1dc701c5cf42ba6)
+++ uspace/srv/fs/ext4fs/ext4fs_ops.c	(revision 561c3012aae7985e9514e586dff80f6d531853c2)
@@ -101,4 +101,7 @@
 static bool ext4fs_is_file(fs_node_t *node);
 static service_id_t ext4fs_service_get(fs_node_t *node);
+static int ext4fs_size_block(service_id_t, uint32_t *);
+static int ext4fs_total_block_count(service_id_t, uint64_t *);
+static int ext4fs_free_block_count(service_id_t, uint64_t *);
 
 /* Static variables */
@@ -833,4 +836,51 @@
 	ext4fs_node_t *enode = EXT4FS_NODE(fn);
 	return enode->instance->service_id;
+}
+
+int ext4fs_size_block(service_id_t service_id, uint32_t *size)
+{
+	ext4fs_instance_t *inst;
+	int rc = ext4fs_instance_get(service_id, &inst);
+	if (rc != EOK)
+		return rc;
+
+	if (NULL == inst)
+		return ENOENT;
+
+	ext4_superblock_t *sb = inst->filesystem->superblock;
+	*size = ext4_superblock_get_block_size(sb);
+
+	return EOK;
+}
+
+int ext4fs_total_block_count(service_id_t service_id, uint64_t *count)
+{
+	ext4fs_instance_t *inst;
+	int rc = ext4fs_instance_get(service_id, &inst);
+	if (rc != EOK)
+		return rc;
+
+	if (NULL == inst)
+		return ENOENT;
+
+	ext4_superblock_t *sb = inst->filesystem->superblock;
+	*count = ext4_superblock_get_blocks_count(sb);
+
+	return EOK;
+}
+
+int ext4fs_free_block_count(service_id_t service_id, uint64_t *count)
+{
+	ext4fs_instance_t *inst;
+	int rc = ext4fs_instance_get(service_id, &inst);
+	if (rc != EOK)
+		return rc;
+	if (NULL == inst)
+		return ENOENT;
+
+	ext4_superblock_t *sb = inst->filesystem->superblock;
+	*count = ext4_superblock_get_free_blocks_count(sb);
+
+	return EOK;
 }
 
@@ -854,5 +904,8 @@
 	.is_directory = ext4fs_is_directory,
 	.is_file = ext4fs_is_file,
-	.service_get = ext4fs_service_get
+	.service_get = ext4fs_service_get,
+	.size_block = ext4fs_size_block,
+	.total_block_count = ext4fs_total_block_count,
+	.free_block_count = ext4fs_free_block_count
 };