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/* SPDX-License-Identifier: BSD-2-Clause */
/**
* @file
*
* @brief RTEMS DeviceIO Support
* @ingroup Device
*/
/*
* COPYRIGHT (c) 1989-2013.
* On-Line Applications Research Corporation (OAR).
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <rtems/deviceio.h>
#include <rtems/rtems/status.h>
int rtems_deviceio_open(
rtems_libio_t *iop,
const char *path,
int oflag,
mode_t mode,
rtems_device_major_number major,
rtems_device_minor_number minor
)
{
rtems_status_code status;
rtems_libio_open_close_args_t args;
args.iop = iop;
args.flags = rtems_libio_iop_flags( iop );
args.mode = mode;
status = rtems_io_open( major, minor, &args );
return rtems_status_code_to_errno( status );
}
int rtems_deviceio_close(
rtems_libio_t *iop,
rtems_device_major_number major,
rtems_device_minor_number minor
)
{
rtems_status_code status;
rtems_libio_open_close_args_t args;
args.iop = iop;
args.flags = 0;
args.mode = 0;
status = rtems_io_close( major, minor, &args );
return rtems_status_code_to_errno( status );
}
ssize_t rtems_deviceio_read(
rtems_libio_t *iop,
void *buf,
size_t nbyte,
rtems_device_major_number major,
rtems_device_minor_number minor
)
{
rtems_status_code status;
rtems_libio_rw_args_t args;
args.iop = iop;
args.offset = iop->offset;
args.buffer = buf;
args.count = nbyte;
args.flags = rtems_libio_iop_flags( iop );
args.bytes_moved = 0;
status = rtems_io_read( major, minor, &args );
if ( status == RTEMS_SUCCESSFUL ) {
iop->offset += args.bytes_moved;
return (ssize_t) args.bytes_moved;
} else {
return rtems_status_code_to_errno( status );
}
}
ssize_t rtems_deviceio_write(
rtems_libio_t *iop,
const void *buf,
size_t nbyte,
rtems_device_major_number major,
rtems_device_minor_number minor
)
{
rtems_status_code status;
rtems_libio_rw_args_t args;
args.iop = iop;
args.offset = iop->offset;
args.buffer = RTEMS_DECONST( void *, buf );
args.count = nbyte;
args.flags = rtems_libio_iop_flags( iop );
args.bytes_moved = 0;
status = rtems_io_write( major, minor, &args );
if ( status == RTEMS_SUCCESSFUL ) {
iop->offset += args.bytes_moved;
return (ssize_t) args.bytes_moved;
} else {
return rtems_status_code_to_errno( status );
}
}
int rtems_deviceio_control(
rtems_libio_t *iop,
ioctl_command_t command,
void *buffer,
rtems_device_major_number major,
rtems_device_minor_number minor
)
{
rtems_status_code status;
rtems_libio_ioctl_args_t args;
args.iop = iop;
args.command = command;
args.buffer = buffer;
status = rtems_io_control( major, minor, &args );
if ( status == RTEMS_SUCCESSFUL ) {
return args.ioctl_return;
} else {
return rtems_status_code_to_errno(status);
}
}
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