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73/****************************************************************************
* fs/shm/shmfs.h
*
* SPDX-License-Identifier: Apache-2.0
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
#ifndef __FS_SHM_SHMFS_H
#define __FS_SHM_SHMFS_H
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/fs/fs.h>
/****************************************************************************
* Public Data
****************************************************************************/
extern const struct file_operations g_shmfs_operations;
/****************************************************************************
* Public Types
****************************************************************************/
struct shmfs_object_s
{
/* Total number of bytes needed from physical memory. */
size_t length;
/* Vector of allocations from physical memory.
*
* - In flat and protected builds this is a pointer to the
* allocated memory.
*
* - In kernel build this is start of a malloc'd vector of void pointers
* and the length of the vector is MM_NPAGES(length).
*/
FAR void *paddr;
/* The struct continues here as malloc'd array of void pointers
* if CONFIG_BUILD_KERNEL
*/
};
/****************************************************************************
* Public Function Prototypes
****************************************************************************/
FAR struct shmfs_object_s *shmfs_alloc_object(size_t length);
void shmfs_free_object(FAR struct shmfs_object_s *object);
#endif