-int cmd_mount(int argc, char *argv[]);
-int cmd_completions(int argc, char *argv[]);
+
+void bcachefs_usage(void);
+int device_cmds(int argc, char *argv[]);
+int fs_cmds(int argc, char *argv[]);
+int data_cmds(int argc, char *argv[]);
+int subvolume_cmds(int argc, char *argv[]);