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ffsformat.h
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ffsformat.h
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/* Copyright 2011 Adam Green (http://mbed.org/users/AdamGreen/)
Licensed 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.
*/
/* Specifies constants and structures used within the FLASH File System. The
header is used by both the runtime and the tool which builds the image on
the PC.
*/
#ifndef _FFSFORMAT_H_
#define _FFSFORMAT_H_
/* The signature to be placed in SFileSystemHeader::FileSystemSignature.
Only the first 8 bytes are used and the NULL terminator discarded. */
#define FILE_SYSTEM_SIGNATURE "FFileSys"
/* Header stored at the beginning of the file system image. */
typedef struct _SFileSystemHeader
{
/* Signature should be set to FILE_SYSTEM_SIGNATURE. */
char FileSystemSignature[8];
/* Number of entries in this file system image. */
unsigned int FileCount;
/* The SFileSystemEntry[SFileSystemHeader::FileCount] array will start here.
These entries are to be sorted so that a binary search can be performed
at file open time. */
} SFileSystemHeader;
/* Information about each file added to the file system image. */
typedef struct _SFileSystemEntry
{
/* The 2 following offsets are relative to the beginning of the file
image. */
unsigned int FilenameOffset;
unsigned int FileBinaryOffset;
unsigned int FileBinarySize;
} SFileSystemEntry;
#endif /* _FFSFORMAT_H_ */