开发linux驱动程序问题？？？？？？？？？？？？？？？？？

Question

我编写了如下代码：编译不通过，报下面的错误，我该如何解决呢？？
#define MODULE
#include <linux/module.h>;
#include <linux/fs.h>;
#include <errno.h>;

static scull_major;

static ssize_t scull_read(struct file *file,char *buf,size_t count,loff_t *ppos)
{
  return 0;
}

static ssize_t scull_write(struct file *file,const char *buf,size_t count,loff_t *ppos)
{
  return 0;
}

static struct file_operations scull_fops={
        owner:        THIS_MODULE,
        read:        scull_read,
        write:        scull_write,
};

int init_module(void)
{  

  scull_major = register_chrdev(0,"scull",scull_fops);
  if(scull_major<0)
  {
    printk("ERR: can't get major dev no\n";
    return scull_major;
  }
  printk("Register dev is ok, scull_major is %d\n",scull_major);

  return 0;
}

void cleanup_module(void)
{
  int ret;
  ret = unregister_chrdev(scull_major,"scull";
  if(ret==-EINVAL)
     printk("err\n";
  printk("scull: good bye, ret = %d\n",ret);
}

编译报的错误
： gcc -c scull.c
scull.c:8: warning: `struct file' declared inside parameter list
scull.c:8: warning: its scope is only this definition or declaration, which is probably not what you want
scull.c:13: warning: `struct file' declared inside parameter list
scull.c:18: variable `scull_fops' has initializer but incomplete type
scull.c:19: unknown field `owner' specified in initializer
scull.c:19: warning: excess elements in struct initializer
scull.c:19: warning: (near initialization for `scull_fops')
scull.c:20: unknown field `read' specified in initializer
scull.c:20: warning: excess elements in struct initializer
scull.c:20: warning: (near initialization for `scull_fops')
scull.c:21: unknown field `write' specified in initializer
scull.c:21: warning: excess elements in struct initializer
scull.c:21: warning: (near initialization for `scull_fops')
scull.c: In function `init_module':
scull.c:27: `scull_fops' has an incomplete type
scull.c: At top level:
scull.c:18: storage size of `scull_fops' isn't known