61 lines
1.6 KiB
C
61 lines
1.6 KiB
C
/*
|
|
* Copyright (C) 2007-2008 Intel Corporation
|
|
*
|
|
* Retrieve drive serial numbers for scsi disks
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms and conditions of the GNU General Public License,
|
|
* version 2, as published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope it will be useful, but WITHOUT
|
|
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
|
* more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License along with
|
|
* this program; if not, write to the Free Software Foundation, Inc.,
|
|
* 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
|
|
*/
|
|
#include <string.h>
|
|
#include <scsi/scsi.h>
|
|
#include <scsi/sg.h>
|
|
#include <sys/ioctl.h>
|
|
|
|
int scsi_get_serial(int fd, void *buf, size_t buf_len)
|
|
{
|
|
unsigned char rsp_buf[255];
|
|
unsigned char inq_cmd[] = {INQUIRY, 1, 0x80, 0, sizeof(rsp_buf), 0};
|
|
unsigned char sense[32];
|
|
struct sg_io_hdr io_hdr;
|
|
int rv;
|
|
unsigned int rsp_len;
|
|
|
|
memset(&io_hdr, 0, sizeof(io_hdr));
|
|
io_hdr.interface_id = 'S';
|
|
io_hdr.cmdp = inq_cmd;
|
|
io_hdr.cmd_len = sizeof(inq_cmd);
|
|
io_hdr.dxferp = rsp_buf;
|
|
io_hdr.dxfer_len = sizeof(rsp_buf);
|
|
io_hdr.dxfer_direction = SG_DXFER_FROM_DEV;
|
|
io_hdr.sbp = sense;
|
|
io_hdr.mx_sb_len = sizeof(sense);
|
|
io_hdr.timeout = 5000;
|
|
|
|
rv = ioctl(fd, SG_IO, &io_hdr);
|
|
|
|
if (rv)
|
|
return rv;
|
|
|
|
if ((io_hdr.info & SG_INFO_OK_MASK) != SG_INFO_OK)
|
|
return -1;
|
|
|
|
rsp_len = rsp_buf[3];
|
|
|
|
if (!rsp_len || buf_len < rsp_len)
|
|
return -1;
|
|
|
|
memcpy(buf, &rsp_buf[4], rsp_len);
|
|
|
|
return 0;
|
|
}
|