mod3.c

linux project1 三个简单模块的编程

#include <linux/module.h>
#include <linux/init.h>
#include <linux/proc_fs.h>

static int proc_print(char* buffer, char** start, off_t off, int count, int *eof, void* data)
{
	return sprintf(buffer,"%s","this is message inside proc_print!\n");
}

static int proc_init(void)
{
	struct proc_dir_entry* entry;
	entry=create_proc_read_entry("proc_print",0,NULL,proc_print,NULL);
	if(entry)
	{
		printk("<3>proc file created!\n");
		return 0;
	}
	else
	{
		printk("<3>proc file failed!\n");
		return -1;
	}
}

static void proc_exit(void)
{
	printk("<3>proc file exit!\n");
	remove_proc_entry("proc_print",NULL);
}

module_init(proc_init);
module_exit(proc_exit);

MODULE_LICENSE("GPL");
MODULE_AUTHOR("wangurey");