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