代码:

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/* get atadisk serial.no for *BSD 
 * Copyright (C) 20CN Security Group 2005.
 * By NetDemon <netdemon@20cn.net>
 *  http://www.20cn.net/  
 */
 
#include <sys/types.h>
#include <sys/ata.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

int
main(int argc, char **argv)
{
	struct ata_cmd iocmd;
	int fd ,dev;

	if ((fd = open("/dev/ata", O_RDWR)) < 0){
		printf("device not found \n" );
		exit(1);
	}

	if (argc < 3){
		printf("usage: %s channel device \n", argv[0]);
		exit(1);
	}
	
	bzero(&iocmd, sizeof(struct ata_cmd));
	dev = atoi(argv[2]);
	iocmd.channel = atoi(argv[1]);
	iocmd.device = dev;
	iocmd.cmd = ATAGPARM;
	if (ioctl(fd, IOCATA, &iocmd) < 0){
		printf("IO error \n");
		exit(1);
	}
	
	printf("device model          %.40s\n", iocmd.u.param.params[dev].model);
	printf("serial number         %.20s\n", iocmd.u.param.params[dev].serial);
	printf("firmware revision     %.8s\n", iocmd.u.param.params[dev].revision);

}

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