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/*
* COPYRIGHT (c) 1989-2012.
* On-Line Applications Research Corporation (OAR).
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.com/license/LICENSE.
*/
#if HAVE_CONFIG_H
#include "config.h"
#endif
#include <rtems/deviceio.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 = iop->flags;
args.mode = mode;
status = rtems_io_open( major, minor, &args );
return rtems_deviceio_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_deviceio_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 = iop->flags;
args.bytes_moved = 0;
status = rtems_io_read( major, minor, &args );
if ( status == RTEMS_SUCCESSFUL ) {
return (ssize_t) args.bytes_moved;
} else {
return rtems_deviceio_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 = buf;
args.count = nbyte;
args.flags = iop->flags;
args.bytes_moved = 0;
status = rtems_io_write( major, minor, &args );
if ( status == RTEMS_SUCCESSFUL ) {
return (ssize_t) args.bytes_moved;
} else {
return rtems_deviceio_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_deviceio_errno(status);
}
}
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