| /* |
| * 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; |
| } |