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#include <fcntl.h>
#include <unistd.h>
#include <sys/ioctl.h>
#include <scsi/sg.h>
#include <stdio.h>
#define HIMD_KEY_HANDSHAKE_PKT1 0x30 /* to MD */
#define HIMD_KEY_HANDSHAKE_PKT2 0x31 /* from MD */
#define HIMD_KEY_HANDSHAKE_PKT3 0x32 /* to MD */
#define HIMD_KEY_HANDSHAKE_PKT4 0x33 /* from MD */
#define HIMD_KEY_UNIQUEID 0x39
#define HIMD_KEY_LEAFID 0x3B
#define HIMD_KEY_DISCID 0x3D
int main(int argc, char ** argv)
{
int fd;
int res;
int i;
struct sg_io_hdr sg;
unsigned char command[12];
unsigned char reply[200];
unsigned char sense[16];
const unsigned int index = 0;
if(argc < 2)
{
fputs("Please specify the path to the scsi device\n",stderr);
return 1;
}
fd = open(argv[1],O_RDWR);
if(fd < 0)
{
perror("Cannot open device");
return 1;
}
if(ioctl(fd,SG_GET_VERSION_NUM,&i) < 0)
{
perror("ioctl SG_GET_VERSTION_NUM failed. Missing sg support?");
return 1;
}
command[0] = 0xA4; /* SENSE KEYDATA (HiMD-specific) */
command[1] = 0; /* LUN 0 */
command[2] = index >> 24; /* 32 */
command[3] = index >> 16; /* bits */
command[4] = index >> 8; /* of */
command[5] = index; /* index */
command[6] = 0;
command[7] = 0xBD; /* magic byte, no idea what it means */
command[8] = 0; /* high byte reply size */
command[9] = 0x12; /* low byte reply size */
command[10] = HIMD_KEY_DISCID;
command[11] = 0;
sg.interface_id = 'S';
sg.dxfer_direction = SG_DXFER_FROM_DEV;
sg.cmd_len = 12;
sg.mx_sb_len = 16;
sg.iovec_count = 0;
sg.dxfer_len = 0x12;
sg.dxferp = reply;
sg.cmdp = command;
sg.sbp = sense;
sg.timeout = 10000000;
sg.flags = 0;
sg.pack_id = 0;
sg.usr_ptr = NULL;
res = ioctl(fd,SG_IO,&sg);
if(res < 0)
{
perror("performing SCSI command");
return 1;
}
if(sg.sb_len_wr)
{
printf("Getting Disc ID FAILED! Sense data: ");
for(i = 0;i < sg.sb_len_wr;i++)
printf("%02X ",(unsigned char)sense[i]);
putchar('\n');
return 1;
}
printf("Disc ID: ");
for(i = 0;i < 16;++i)
printf("%02X",(unsigned char)reply[i+2]);
putchar('\n');
close(fd);
return 0;
}
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