libblock/src/ramdisk-register.c

0001 /* SPDX-License-Identifier: BSD-2-Clause */
0002
0003 /**
0004  * @file
0005  *
0006  * @ingroup rtems_ramdisk
0007  *
0008  * @brief RAM disk block device implementation.
0009  */
0010
0011 /*
0012  * Copyright (C) 2009, 2012 embedded brains GmbH & Co. KG
0013  *
0014  * Redistribution and use in source and binary forms, with or without
0015  * modification, are permitted provided that the following conditions
0016  * are met:
0017  * 1. Redistributions of source code must retain the above copyright
0018  *    notice, this list of conditions and the following disclaimer.
0019  * 2. Redistributions in binary form must reproduce the above copyright
0020  *    notice, this list of conditions and the following disclaimer in the
0021  *    documentation and/or other materials provided with the distribution.
0022  *
0023  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
0024  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
0025  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
0026  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
0027  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
0028  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
0029  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
0030  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
0031  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
0032  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
0033  * POSSIBILITY OF SUCH DAMAGE.
0034  */
0035
0036 #ifdef HAVE_CONFIG_H
0037 #include "config.h"
0038 #endif
0039
0040 #include <rtems/ramdisk.h>
0041
0042 rtems_status_code ramdisk_register(
0043   uint32_t media_block_size,
0044   rtems_blkdev_bnum media_block_count,
0045   bool trace,
0046   const char *disk
0047 )
0048 {
0049   rtems_status_code sc = RTEMS_SUCCESSFUL;
0050   ramdisk *rd = NULL;
0051
0052   rd = ramdisk_allocate(NULL, media_block_size, media_block_count, trace);
0053   if (rd == NULL) {
0054     return RTEMS_UNSATISFIED;
0055   }
0056
0057   sc = rtems_blkdev_create(
0058     disk,
0059     media_block_size,
0060     media_block_count,
0061     ramdisk_ioctl,
0062     rd
0063   );
0064   if (sc != RTEMS_SUCCESSFUL) {
0065     ramdisk_free(rd);
0066
0067     return RTEMS_UNSATISFIED;
0068   }
0069
0070   return RTEMS_SUCCESSFUL;
0071 }