#include <stdio.h>
#include <fcntl.h>
//#include <linux/ide.h>
#include <linux/hdreg.h>

#define SEAGATE_REPORT_FULL_CAPACITY	0xF1

int
get_identity(int fd) {
	unsigned char args[4+512] = {WIN_IDENTIFY,0,0,1,};
	struct hd_driveid *id = (struct hd_driveid *)&args[4];

	if (ioctl(fd, HDIO_DRIVE_CMD, &args)) {
		perror("HDIO_DRIVE_CMD");
		fprintf(stderr,
			"WIN_IDENTIFY failed - trying WIN_PIDENTIFY\n");
		args[0] = WIN_PIDENTIFY;
		if (ioctl(fd, HDIO_DRIVE_CMD, &args)) {
			perror("HDIO_DRIVE_CMD");
			fprintf(stderr,
			       "WIN_PIDENTIFY also failed - giving up\n");
			exit(1);
		}
	}

	printf("id->command_set_1: 0x%X\n", id->command_set_1);
	printf("id->lba_capacity: %lu\n", id->lba_capacity);
}

/*
 * result: in LBA mode precisely what is expected
 *         in CHS mode the correct H and S, and C mod 65536.
 */

int
set_feature(int fd) {
    unsigned char args[4] = {WIN_SETFEATURES,0,0xf1,0};
    int i;

    if (ioctl(fd, HDIO_DRIVE_CMD, &args)) {
	perror("HDIO_DRIVE_CMD failed WIN_SETFEATURES");
	for (i=0; i<4; i++)
	    printf("%d = 0x%X\n", args[i], args[i]);
	    exit(1);
    }

    return 0;
}

main(int argc, char **argv){
	int fd, c;

	char *device = NULL;	/* e.g. "/dev/hda" */
	int slave = 0;

	device = argv[1];
	if (!device) {
		fprintf(stderr, "no device specified - "
			"use e.g. \"seagate /dev/hdb\"\n");
		exit(1);
	}
	printf("Using device %s\n", device);

	fd = open(device, O_RDONLY);
	if (fd == -1) {
		perror("open");
		exit(1);
	}
	printf("Sending Set Features F1 subcommand\n");
	set_feature(fd);
	printf("Done.\n");

	return 0;
}