编译错误

tonnyhan

我是linux系统初学者，想写一个driver，程序如下:
#ifndef __KERNERL__
#define __KERNERL__
#endif
#ifndef MODULE
#define MODULE
#endif

#define __NO_VERSION__
#include <linux/init.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/utsname.h>
#include <linux/major.h>
#include <linux/fs.h>
#include <linux/sched.h>
#include <linux/types.h>
#include <linux/config.h>
#include <linux/poll.h>
#include <linux/errno.h>
#include <linux/bitops.h>
#include <linux/wrapper.h>
MODULE_LICENSE("GPL");
#ifdef CONFIG_SMP
#define CONFIG_SMP
#endif
int init_module(void);
void cleanup_module(void);
static int asdf_open(struct inode *inode,struct file *filp);
static int asdf_release(struct inode *inode,struct file *filp);
static ssize_t asdf_read(struct file *filp,char *buf,size_t count, loff_t *fpos);
static ssize_t asdf_write(struct file* filp,const char* buf,size_t count,loff_t *f_pos);
static loff_t asdf_seek(struct file *filp,loff_t offset,int orig);

struct file_operations asdf_fops={
.llseek=asdf_seek,
.read=asdf_read,
.write=asdf_write,
.open=asdf_open,
.release=asdf_release,
};

#define DEV_NAME "testdev"
static int asdf_major;
static unsigned char asdf_body[4096]="asdf_body\n";
int init_module(void)
{
        printk("<1> A simple device driver file\n");
        asdf_major=register_chrdev(0,DEV_NAME,&asdf_fops);
        if(asdf_major<0)
        {
                printk("load driver failed");
                return asdf_major;
        }
        printk("the major is %d",asdf_major);
        return 0;
}
void cleanup_module(void)
{
        int ret=unregister_chrdev(asdf_major,DEV_NAME);
        if(ret <0)
                printk("<1>Error unregister device");
        else
                printk("<1>A Simple device driver removed ");
}

static int asdf_open(struct inode *inode,struct file *filp)
{
        printk("open");       
        return 0;
}
static int asdf_release(struct inode *inode,struct file *filp)
{
        printk("released");
        return 0;
}
static ssize_t asdf_read(struct file *filp,char *buf,size_t count,loff_t *f_pos)
{
/*        loff_t pos;
        pos=*f_pos;
        if((pos==4096)||(count>4096)) return 0;
        pos+=count;
        if(pos>4096)
        {
                count-=(pos-4096);
                pos=4096;
        }
        if(copy_to_user(buf,asdf_body+*f_pos,count))
        return -EFAULT;
        *f_pos=pos;
        return count;
*/        return 0;       
}
static ssize_t asdf_write(struct file *filp,const char *buf,size_t count,loff_t *f_pos)
{
/*        loff_t pos;
        pos=*f_pos;
        if((pos==4096)||(count>4096)) return 0;
        pos+=count;
        if(pos>4096)
        {
                count-=(pos-4096);
                pos=4096;
        }
        if(copy_from_user(asdf_body+*f_pos,buf,count)) return -EFAULT;
        *f_pos=pos;
        return count;
*/        return 0;
}
static loff_t asdf_seek(struct file *filp,loff_t offset,int orig)
{
        loff_t pos;
        /*
        pos=filp->f_pos;
        switch(orig)
        {
        case 0:
        pos=offset;
        break;
        case 1:
        pos+=offset;
        break;
        case 2:
        pos=4096+offset;
        break;
        default:
        return -EINVAL;
        }
        if((pos>4096)||(pos<0)) printk("lseek err %d",pos);
        return -EINVAL;
        return filp->f_pos=pos;
        */
        return pos;
}

MakeFile如下:

CC=gcc
MODCFLAGS := -Wall -DMODULE -D__KERNEL__ -DLINUX
asdf.o: asdf.c /usr/include/linux/version.h
        $(CC) $(MODCFLAGS) -c asdf.c

编译产生如下结果:

gcc -Wall -DMODULE -D__KERNEL__ -DLINUX -c asdf.c
In file included from /usr/include/linux/fs.h:23,
                 from asdf.c:14:
/usr/include/linux/string.h:8:2: warning: #warning Using kernel header in userland!
In file included from /usr/include/linux/sched.h:14,
                 from asdf.c:15:
/usr/include/linux/timex.h:173: field `time' has incomplete type
In file included from /usr/include/linux/bitops.h:69,
                 from /usr/include/asm/system.h:7,
                 from /usr/include/linux/sched.h:16,
                 from asdf.c:15:
/usr/include/asm/bitops.h:327:2: warning: #warning This includefile is not available on all architectures.
/usr/include/asm/bitops.h:328:2: warning: #warning Using kernel headers in userspace: atomicity
not guaranteed
In file included from /usr/include/linux/signal.h:4,
                 from /usr/include/linux/sched.h:25,
                 from asdf.c:15:
/usr/include/asm/signal.h:107: parse error before "sigset_t"
/usr/include/asm/signal.h:110: parse error before '}' token
In file included from /usr/include/linux/sched.h:81,
                 from asdf.c:15:
/usr/include/linux/timer.h:45: parse error before "spinlock_t"
/usr/include/linux/timer.h:53: parse error before '}' token
/usr/include/linux/timer.h:67: parse error before "tvec_base_t"
/usr/include/linux/timer.h:101: parse error before "tvec_bases"
/usr/include/linux/timer.h: In function `init_timer':
/usr/include/linux/timer.h:105: dereferencing pointer to incomplete type
/usr/include/linux/timer.h:105: dereferencing pointer to incomplete type
/usr/include/linux/timer.h:106: dereferencing pointer to incomplete type
/usr/include/linux/timer.h: In function `timer_pending':
/usr/include/linux/timer.h:121: dereferencing pointer to incomplete type
asdf.c: At top level:
asdf.c:28: warning: `struct file' declared inside parameter list
asdf.c:28: warning: its scope is only this definition or declaration, which is probably not what you want
asdf.c:28: warning: `struct inode' declared inside parameter list
asdf.c:29: warning: `struct file' declared inside parameter list
asdf.c:29: warning: `struct inode' declared inside parameter list
asdf.c:30: warning: `struct file' declared inside parameter list
asdf.c:31: warning: `struct file' declared inside parameter list
asdf.c:32: warning: `struct file' declared inside parameter list
asdf.c:34: variable `asdf_fops' has initializer but incomplete type
asdf.c:35: unknown field `llseek' specified in initializer
asdf.c:35: warning: excess elements in struct initializer
asdf.c:35: warning: (near initialization for `asdf_fops')
asdf.c:36: unknown field `read' specified in initializer
asdf.c:36: warning: excess elements in struct initializer
asdf.c:36: warning: (near initialization for `asdf_fops')
asdf.c:37: unknown field `write' specified in initializer
asdf.c:37: warning: excess elements in struct initializer
asdf.c:37: warning: (near initialization for `asdf_fops')
asdf.c:38: unknown field `open' specified in initializer
asdf.c:38: warning: excess elements in struct initializer
asdf.c:38: warning: (near initialization for `asdf_fops')
asdf.c:39: unknown field `release' specified in initializer
asdf.c:39: warning: excess elements in struct initializer
asdf.c:39: warning: (near initialization for `asdf_fops')
asdf.c: In function `init_module':
asdf.c:47: warning: implicit declaration of function `printk'
asdf.c:48: warning: implicit declaration of function `register_chrdev'
asdf.c: In function `cleanup_module':
asdf.c:59: warning: implicit declaration of function `unregister_chrdev'
asdf.c: At top level:
asdf.c:66: warning: `struct file' declared inside parameter list
asdf.c:66: warning: `struct inode' declared inside parameter list
asdf.c:67: conflicting types for `asdf_open'
asdf.c:28: previous declaration of `asdf_open'
asdf.c:71: warning: `struct file' declared inside parameter list
asdf.c:71: warning: `struct inode' declared inside parameter list
asdf.c:72: conflicting types for `asdf_release'
asdf.c:29: previous declaration of `asdf_release'
asdf.c:76: warning: `struct file' declared inside parameter list
asdf.c:77: conflicting types for `asdf_read'
asdf.c:30: previous declaration of `asdf_read'
asdf.c:93: warning: `struct file' declared inside parameter list
asdf.c:94: conflicting types for `asdf_write'
asdf.c:31: previous declaration of `asdf_write'
asdf.c:109: warning: `struct file' declared inside parameter list
asdf.c:110: conflicting types for `asdf_seek'
asdf.c:32: previous declaration of `asdf_seek'
asdf.c:34: storage size of `asdf_fops' isn't known
asdf.c:44: warning: `asdf_body' defined but not used
make: *** [asdf.o] Error 1

请问主要问题在哪里呢，请大家指教!