proc_text

实现模块的加载等实现。在LINUX操作系统下实现 操作系统实验程序之一

#define __NO_VERSION
#define __KERNEL__
#define MODULE

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/sched.h>
#include <linux/proc_fs.h>
#include <asm/uaccess.h>

#define STRINGLEN     1024
#define NAMELEN       50
#define IDLEN         10

 struct person_information{
        char name[NAMELEN];
        char id[IDLEN];
 }

struct person_information global_buffer[STRINGLEN];

struct proc_dir_entry *student_dir;

int rec_count=0;
                                      
int proc_read_information(char *page,char **start,off_t off,int count,int *eof,
                          void *data)
{
    int len=0;
    MOD_INC_USE_COUNT;
    int i=0;
    while(rec_count)
        {
          len=len+sprintf(page,"name is %s, id is %s \n",global_buffer[i].name,
                      global_buffer[i].id`);
          i++;
        }

    MOD_DEC_USE_COUNT;

    return 0;
}            

int proc_write_student(struct file *file,const char *buffer.unsigned long count,
                       void *data)
{
    int len=0;
    MOD_INC_COUNT;

    char op=fgetc(fp);
    
    if(op=='S')
      {
        count++;
        global_buffer[count].name=fgetc(fp);
        global_buffer[count].id=fgetc(fp);
      }
    else if(op=='D')
      {
        char name=fgetc(fp);
        char  
      }
         
    


}                              
                                                                                


int init_module()
{
    example_dir=proc_mkdir("proc_text",NULL);
    example_dir->owner=THIS_MODULE;

    student_file=create_proc_entry("student",0644,example_dir);
    strcpy(global_buffer,"student");
    
    student_file->read_proc=proc_read_student;
    student_file->write_proc=proc_write_student;
    student_file->owner=THIS_MODULE;

    return 0;
}

void cleanup_module()
{
     remove_proc_entry("student",example_dir);
     remove_proc_entry("proc_text",NULL);
}

MODULE_LICENSE("GPL");