디바이스 드라이버 개발좀 공부하려고 하는데 컴파일부터 안대네

#ifndef __KERNEL__
#define __KERNEL__
#endif
#ifndef MODULE
#define MODULE
#endif

#define __NO_VERSION__
#include <linux/module.h>
#include <linux/version.h>
#include <linux/fs.h>

struct file_operations Fops = {
NULL, /* owener */
NULL, /* llseek */
NULL, /* read */
NULL, /* write */
NULL, /* readdir */
NULL, /* poll */
NULL, /* ioctl */
NULL, /* mmap */
NULL, /* open */
NULL, /* flush */
NULL, /* release */
NULL, /* fsync */
NULL, /* lock */
NULL, /* readv */
NULL, /* writev */
NULL, /* sendpage */
NULL /* get_unmapped_area */
};

int init_module()
{
if (register_chrdev(213, "hello", &Fops) < 0)
return -EIO;

printk("hello.o start\n");

return 0;
}

void cleanup_module()
{
unregister_chrdev(213, "hello");
printk("hello.o end\n");
}

컴파일은 다음과 같이 한다.

gcc -o hello.o -c -D__KERNEL__ -DMODULE -O -Wall -I/usr/include hello.c
이걸 그대로 따라 했거든여 그런데

In file included from /usr/include/linux/fs.h:23,
from hello.c:11:
/usr/include/linux/string.h:8:2: warning: #warning Using kernel header in
hello.c:13: variable `Fops' has initializer but incomplete type
hello.c:14: warning: excess elements in struct initializer
hello.c:14: warning: (near initialization for `Fops')
hello.c:15: warning: excess elements in struct initializer
hello.c:15: warning: (near initialization for `Fops')
hello.c:16: warning: excess elements in struct initializer
hello.c:16: warning: (near initialization for `Fops')
hello.c:17: warning: excess elements in struct initializer
hello.c:17: warning: (near initialization for `Fops')
hello.c:18: warning: excess elements in struct initializer
hello.c:18: warning: (near initialization for `Fops')
hello.c:19: warning: excess elements in struct initializer
hello.c:19: warning: (near initialization for `Fops')
hello.c:20: warning: excess elements in struct initializer
hello.c:20: warning: (near initialization for `Fops')
hello.c:21: warning: excess elements in struct initializer
hello.c:21: warning: (near initialization for `Fops')
hello.c:22: warning: excess elements in struct initializer
hello.c:22: warning: (near initialization for `Fops')
hello.c:23: warning: excess elements in struct initializer
hello.c:23: warning: (near initialization for `Fops')
hello.c:24: warning: excess elements in struct initializer
hello.c:24: warning: (near initialization for `Fops')
hello.c:25: warning: excess elements in struct initializer
hello.c:25: warning: (near initialization for `Fops')
hello.c:26: warning: excess elements in struct initializer
hello.c:26: warning: (near initialization for `Fops')
hello.c:27: warning: excess elements in struct initializer
hello.c:27: warning: (near initialization for `Fops')
hello.c:28: warning: excess elements in struct initializer
hello.c:28: warning: (near initialization for `Fops')
hello.c:29: warning: excess elements in struct initializer
hello.c:29: warning: (near initialization for `Fops')
hello.c:31: warning: excess elements in struct initializer
hello.c:31: warning: (near initialization for `Fops')
hello.c: In function `init_module':
hello.c:35: warning: implicit declaration of function `register_chrdev'
hello.c:36: `EIO' undeclared (first use in this function)
hello.c:36: (Each undeclared identifier is reported only once
hello.c:36: for each function it appears in.)
hello.c:38: warning: implicit declaration of function `printk'
hello.c: In function `cleanup_module':
hello.c:45: warning: implicit declaration of function `unregister_chrdev'
hello.c:47:2: warning: no newline at end of file
/usr/include/linux/kdev_t.h: At top level:
hello.c:13: storage size of `Fops' isn't known

에러만 이렇게 엄청나게 나와요 su 를 써서 root 권한 얻고서도 해밧는데도
똑같고여 리눅스 버전은 레드햇 8.0 내지는 7.0 같은데 안대는 이유를 모르겠
어여
그리고여 이미 설치되 있는 다른 장치들의 소스는 어느 디렉토리에 있나여