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/* SPDX-License-Identifier: BSD-2-Clause */
/**
* @file
*
* @ingroup rtems_rfs
*
* @brief RTEMS File Systems Buffer Routines
*
* RTEMS File Systems Buffer Routines for the RTEMS libblock BD buffer cache.
*
*/
/*
* COPYRIGHT (c) 2010 Chris Johns <chrisj@rtems.org>
*
* 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 <inttypes.h>
#include <errno.h>
#include <rtems/rfs/rtems-rfs-buffer.h>
#include <rtems/rfs/rtems-rfs-file-system.h>
#if RTEMS_RFS_USE_LIBBLOCK
/**
* Show errors.
*/
#define RTEMS_RFS_BUFFER_ERRORS 0
int
rtems_rfs_buffer_bdbuf_request (rtems_rfs_file_system* fs,
rtems_rfs_buffer_block block,
bool read,
rtems_rfs_buffer** buffer)
{
rtems_status_code sc;
int rc = 0;
if (read)
sc = rtems_bdbuf_read (rtems_rfs_fs_device (fs), block, buffer);
else
sc = rtems_bdbuf_get (rtems_rfs_fs_device (fs), block, buffer);
if (sc != RTEMS_SUCCESSFUL)
{
#if RTEMS_RFS_BUFFER_ERRORS
printf ("rtems-rfs: buffer-bdbuf-request: block=%lu: bdbuf-%s: %d: %s\n",
block, read ? "read" : "get", sc, rtems_status_text (sc));
#endif
rc = EIO;
}
return rc;
}
int
rtems_rfs_buffer_bdbuf_release (rtems_rfs_buffer* buffer,
bool modified)
{
rtems_status_code sc;
int rc = 0;
if (rtems_rfs_trace (RTEMS_RFS_TRACE_BUFFER_RELEASE))
printf ("rtems-rfs: bdbuf-release: block=%" PRIuPTR " bdbuf=%" PRIu32 " %s\n",
((intptr_t) buffer->user),
buffer->block, modified ? "(modified)" : "");
if (modified)
sc = rtems_bdbuf_release_modified (buffer);
else
sc = rtems_bdbuf_release (buffer);
if (sc != RTEMS_SUCCESSFUL)
{
#if RTEMS_RFS_BUFFER_ERRORS
printf ("rtems-rfs: buffer-release: bdbuf-%s: %s(%d)\n",
modified ? "modified" : "not-modified",
rtems_status_text (sc), sc);
#endif
rc = EIO;
}
return rc;
}
#endif
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