psxtests/psxmmap01/test_driver.c

0001 /* SPDX-License-Identifier: BSD-2-Clause */
0002
0003 /*
0004  * Copyright (c) 2017 Kevin Kirspel.
0005  *
0006  * Redistribution and use in source and binary forms, with or without
0007  * modification, are permitted provided that the following conditions
0008  * are met:
0009  * 1. Redistributions of source code must retain the above copyright
0010  *    notice, this list of conditions and the following disclaimer.
0011  * 2. Redistributions in binary form must reproduce the above copyright
0012  *    notice, this list of conditions and the following disclaimer in the
0013  *    documentation and/or other materials provided with the distribution.
0014  *
0015  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
0016  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
0017  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
0018  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
0019  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
0020  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
0021  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
0022  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
0023  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
0024  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
0025  * POSSIBILITY OF SUCH DAMAGE.
0026  */
0027
0028 #ifdef HAVE_CONFIG_H
0029 #include "config.h"
0030 #endif
0031
0032 #include "test_driver.h"
0033
0034 #include <rtems/libio.h>
0035
0036 char test_data[PAGE_SIZE];
0037
0038 static int handler_fstat(
0039   const rtems_filesystem_location_info_t *loc,
0040   struct stat *buf
0041 )
0042 {
0043   buf->st_mode = S_IFCHR | S_IRWXU | S_IRWXG | S_IRWXO;
0044   return 0;
0045 }
0046
0047 static int handler_mmap(
0048   rtems_libio_t *iop,
0049   void **addr,
0050   size_t len,
0051   int prot,
0052   off_t off
0053 )
0054 {
0055   if ( len <= sizeof(test_data) ) {
0056     *addr = test_data;
0057   } else {
0058     *addr = NULL;
0059   }
0060   return 0;
0061 }
0062
0063 static const rtems_filesystem_file_handlers_r node_handlers = {
0064   .open_h = rtems_filesystem_default_open,
0065   .close_h = rtems_filesystem_default_close,
0066   .read_h = rtems_filesystem_default_read,
0067   .write_h = rtems_filesystem_default_write,
0068   .ioctl_h = rtems_filesystem_default_ioctl,
0069   .lseek_h = rtems_filesystem_default_lseek,
0070   .fstat_h = handler_fstat,
0071   .ftruncate_h = rtems_filesystem_default_ftruncate,
0072   .fsync_h = rtems_filesystem_default_fsync_or_fdatasync,
0073   .fdatasync_h = rtems_filesystem_default_fsync_or_fdatasync,
0074   .fcntl_h = rtems_filesystem_default_fcntl,
0075   .poll_h = rtems_filesystem_default_poll,
0076   .kqfilter_h = rtems_filesystem_default_kqfilter,
0077   .mmap_h = handler_mmap,
0078   .readv_h = rtems_filesystem_default_readv,
0079   .writev_h = rtems_filesystem_default_writev
0080 };
0081
0082 const IMFS_node_control node_control = IMFS_GENERIC_INITIALIZER(
0083   &node_handlers,
0084   IMFS_node_initialize_default,
0085   IMFS_node_destroy_default
0086 );