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#include <stdio.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include "sg_include.h"
#define TUR_CMD_LEN 6
/*
* test IO functions : add yours here
*
* returns 0 : path gone valid
* returns 1 : path still failed
*/
int readsector0 (char *devnode)
{
int fd, r;
char buf;
fd = open (devnode, O_RDONLY);
if (read (fd, &buf, 1) != 1)
r = 0;
else
r = 1;
close (fd);
return r;
}
int tur(char *devnode)
{
unsigned char turCmdBlk[TUR_CMD_LEN] = { 0x00, 0, 0, 0, 0, 0 };
struct sg_io_hdr io_hdr;
unsigned char sense_buffer[32];
int fd;
fd = open (devnode, O_RDONLY);
memset(&io_hdr, 0, sizeof (struct sg_io_hdr));
io_hdr.interface_id = 'S';
io_hdr.cmd_len = sizeof (turCmdBlk);
io_hdr.mx_sb_len = sizeof (sense_buffer);
io_hdr.dxfer_direction = SG_DXFER_NONE;
io_hdr.cmdp = turCmdBlk;
io_hdr.sbp = sense_buffer;
io_hdr.timeout = 20000;
io_hdr.pack_id = 0;
if (ioctl(fd, SG_IO, &io_hdr) < 0) {
close(fd);
return 0;
}
if (io_hdr.info & SG_INFO_OK_MASK) {
return 0;
}
return 1;
}
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