目录树下面再给个样例├─Makefile│├─boot│bootsect.s│head.s│setup.s│├─fs│bitmap.c│block_dev.c│buffer.c│char_dev.c│exec.c│fcntl.c│file_dev.c│file_table.c│inode.c│ioctl.c│Makefile│namei.c│open.c│pipe.c│read_write.c│