73 lines
2.4 KiB
C
73 lines
2.4 KiB
C
/* ****************************************************************************
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* stream/builtin/streams/scsi.c -- make an SCSI request on a STREAMS device.
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* Copyright (C) 2016-2017 Thomas "Cakeisalie5" Touhey <thomas@touhey.fr>
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*
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* This file is part of libcasio.
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* libcasio is free software; you can redistribute it and/or modify it
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* under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation; either version 3.0 of the License,
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* or (at your option) any later version.
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*
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* libcasio is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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* See the GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with libcasio; if not, see <http://www.gnu.org/licenses/>.
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* ************************************************************************* */
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#include "streams.h"
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#if 0 && !defined(LIBCASIO_DISABLED_STREAMS)
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# include <scsi/sg.h>
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/**
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* casio_streams_scsi_request:
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* Make an SCSI request using the SG interface.
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*
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* @arg vcookie the cookie (uncasted).
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* @arg request the SCSI request.
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* @return the error code (0 if ok).
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*/
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int CASIO_EXPORT casio_streams_scsi_request(void *vcookie,
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casio_scsi_t *request)
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{
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streams_cookie_t *cookie = (streams_cookie_t*)vcookie;
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/* correct the request */
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int err = casio_scsi_correct(request);
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if (err) return (err);
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/* make an `sg_io_hdr_t` out of the request */
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sg_io_hdr_t h = {
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/* main input data */
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.interface_id = 'S', /* magic */
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.flags = 0, /* no special things, just normal SCSI */
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.dxfer_direction = request->direction, /* FIXME: macro to macro? */
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.cmd_len = request->cmd_len, .cmdp = request->cmd, /* command */
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.timeout = 0, /* FIXME (also, in ms) */
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/* data buffer */
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.iovec_count = 0,
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.dxfer_len = request->data_len,
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.dxferp = request->data, /* data buffer */
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/* sense buffer */
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.max_sb_len = request->slen, .sbp = request->sense, /* sense buffer */
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};
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/* make the request */
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if (ioctl(cookie->_writefd, SG_IO, &h) < 0) switch (errno) {
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case EACCES:
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log_error("Root perms required!");
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default:
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log_error("Errno: %s (0x%04X)", strerror(errno), errno);
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return (casio_error_unknown);
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}
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/* everything went well */
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return (0);
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}
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#endif
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