/* SPDX-License-Identifier: BSD-2-Clause */
/**
* @file
*
* @brief Internal Support for POSIX 1003.1b 6.3.1 - map pages of memory
*
*/
/*
* Copyright (c) 2012 Chris Johns
*
* 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.
*/
#ifndef _RTEMS_POSIX_MMANIMPL_H
#define _RTEMS_POSIX_MMANIMPL_H
#include <rtems/libio_.h>
#include <rtems/chain.h> /* FIXME: use score chains for proper layering? */
#include <rtems/posix/shm.h>
#ifdef __cplusplus
extern "C" {
#endif
/* FIXME: add Doxygen */
/**
* Every mmap'ed region has a mapping.
*/
typedef struct mmap_mappings_s {
rtems_chain_node node; /**< The mapping chain's node */
void* addr; /**< The address of the mapped memory */
size_t len; /**< The length of memory mapped */
int flags; /**< The mapping flags */
POSIX_Shm_Control *shm; /**< The shared memory object or NULL */
} mmap_mapping;
extern rtems_chain_control mmap_mappings;
static inline void mmap_mappings_lock_obtain( void )
{
rtems_libio_lock();
}
static inline void mmap_mappings_lock_release( void )
{
rtems_libio_unlock();
}
#ifdef __cplusplus
}
#endif
#endif
