如何把内核中的信息打印到文件

#include
#include
#include
#include
#include
#include
#include
#include
#include

#defineMY_FILE"/root/LogFile"

charbuf[128];
structfile*file=NULL;



staticint__initinit(void)
{
mm_segment_told_fs;
printk("Hello,I''mthemodulethatintendstowritemessagestofile.\n");


if(file==NULL)
file=filp_open(MY_FILE,O_RDWR|O_APPEND|O_CREAT,0644);
if(IS_ERR(file)){
printk("erroroccuredwhileopeningfile%s,exiting...\n",MY_FILE);
return0;
}

sprintf(buf,"%s","TheMessages.");

old_fs=get_fs();
set_fs(KERNEL_DS);
file->f_op->write(file,(char*)buf,sizeof(buf),&file->f_pos);
set_fs(old_fs);


return0;
}

staticvoid__exitfini(void)
{
if(file!=NULL)
filp_close(file,NULL);
}

module_init(init);
module_exit(fini);
MODULE_LICENSE("GPL");

(e129)

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