110 lines
3.9 KiB
C
110 lines
3.9 KiB
C
/****************************************************************************
|
|
* include/nuttx/fs/fat.h
|
|
*
|
|
* 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 __INCLUDE_NUTTX_FS_FAT_H
|
|
#define __INCLUDE_NUTTX_FS_FAT_H
|
|
|
|
/****************************************************************************
|
|
* Included Files
|
|
****************************************************************************/
|
|
|
|
#include <nuttx/config.h>
|
|
#include <stdint.h>
|
|
|
|
/****************************************************************************
|
|
* Pre-processor Definitions
|
|
****************************************************************************/
|
|
|
|
/* File attribute bits in FAT directory entry */
|
|
|
|
#define FATATTR_READONLY 0x01
|
|
#define FATATTR_HIDDEN 0x02
|
|
#define FATATTR_SYSTEM 0x04
|
|
#define FATATTR_VOLUMEID 0x08
|
|
#define FATATTR_DIRECTORY 0x10
|
|
#define FATATTR_ARCHIVE 0x20
|
|
|
|
#define FATATTR_LONGNAME \
|
|
(FATATTR_READONLY|FATATTR_HIDDEN|FATATTR_SYSTEM|FATATTR_VOLUMEID)
|
|
|
|
/****************************************************************************
|
|
* Type Definitions
|
|
****************************************************************************/
|
|
|
|
typedef uint8_t fat_attrib_t;
|
|
|
|
/****************************************************************************
|
|
* Public Function Prototypes
|
|
****************************************************************************/
|
|
|
|
#ifdef __cplusplus
|
|
#define EXTERN extern "C"
|
|
extern "C"
|
|
{
|
|
#else
|
|
#define EXTERN extern
|
|
#endif
|
|
|
|
/****************************************************************************
|
|
* Name: fat_getattrib and fat_setattrib
|
|
*
|
|
* Description:
|
|
* Non-standard functions to get and set FAT file/directory attributes
|
|
*
|
|
****************************************************************************/
|
|
|
|
int fat_getattrib(FAR const char *path, FAR fat_attrib_t *attrib);
|
|
int fat_setattrib(FAR const char *path, fat_attrib_t setbits,
|
|
fat_attrib_t clearbits);
|
|
|
|
/****************************************************************************
|
|
* Name: fat_dma_alloc and fat_dma_free
|
|
*
|
|
* Description:
|
|
* The FAT file system allocates two I/O buffers for data transfer, each
|
|
* are the size of one device sector. One of the buffers is allocated
|
|
* once for each FAT volume that is mounted; the other buffers are
|
|
* allocated each time a FAT file is opened.
|
|
*
|
|
* Some hardware, however, may require special DMA-capable memory in
|
|
* order to perform the transfers. If CONFIG_FAT_DMAMEMORY is defined
|
|
* then the architecture-specific hardware must provide the functions
|
|
* fat_dma_alloc() and fat_dma_free() as prototyped below: fat_dma_alloc()
|
|
* will allocate DMA-capable memory of the specified size; fat_dma_free()
|
|
* is the corresponding function that will be called to free the DMA-
|
|
* capable memory.
|
|
*
|
|
* This functions may be simple wrappers around gran_alloc() and
|
|
* gran_free() (See nuttx/mm/gran.h).
|
|
*
|
|
****************************************************************************/
|
|
|
|
#ifdef CONFIG_FAT_DMAMEMORY
|
|
FAR void *fat_dma_alloc(size_t size);
|
|
void fat_dma_free(FAR void *memory, size_t size);
|
|
#endif
|
|
|
|
#undef EXTERN
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* __INCLUDE_NUTTX_FS_FAT_H */
|