text: /*
   * Copyright (C) 2015-2017 Alibaba Group Holding Limited
   */
  
  /*********************************************************************
  *                SEGGER Microcontroller GmbH & Co. KG                *
  *        Solutions for real time microcontroller applications        *
  **********************************************************************
  *                                                                    *
  *        (c) 1996 - 2017  SEGGER Microcontroller GmbH & Co. KG       *
  *                                                                    *
  *        Internet: www.segger.com    Support:  support@segger.com    *
  *                                                                    *
  **********************************************************************
  
  ** emWin V5.40 - Graphical user interface for embedded applications **
  All  Intellectual Property rights  in the Software belongs to  SEGGER.
  emWin is protected by  international copyright laws.  Knowledge of the
  source code may not be used to write a similar product.  This file may
  only be used in accordance with the following terms:
  
  The  software has  been licensed  to STMicroelectronics International
  N.V. a Dutch company with a Swiss branch and its headquarters in Plan-
  les-Ouates, Geneva, 39 Chemin du Champ des Filles, Switzerland for the
  purposes of creating libraries for ARM Cortex-M-based 32-bit microcon_
  troller products commercialized by Licensee only, sublicensed and dis_
  tributed under the terms and conditions of the End User License Agree_
  ment supplied by STMicroelectronics International N.V.
  Full source code is available at: www.segger.com
  
  We appreciate your understanding and fairness.
  ----------------------------------------------------------------------
  Licensing information
  Licensor:                 SEGGER Software GmbH
  Licensed to:              STMicroelectronics International NV, 39, Chemin du Champ-des Filles, 1228 Plan Les Ouates, Geneva, SWITZERLAND
  Licensed SEGGER software: emWin
  License number:           GUI-00429
  License model:            Buyout SRC [Buyout Source Code License, signed November 29th 2012]
  Licensed product:         -
  Licensed platform:        STMs ARM Cortex-M based 32 BIT CPUs
  Licensed number of seats: -
  ----------------------------------------------------------------------
  Support and Update Agreement (SUA)
  SUA period:               2012-12-07 - 2017-12-31
  Contact to extend SUA:    sales@segger.com
  ----------------------------------------------------------------------
  File        : IP_FS.h
  Purpose     : File system abstraction layer
  ---------------------------END-OF-HEADER------------------------------
  
  Attention : Do not modify this file !
  */
  
  #ifndef  IP_FS_H
  #define  IP_FS_H
  
  #include "SEGGER.h"
  
  #if defined(__cplusplus)
  extern "C" {     /* Make sure we have C-declarations in C++ programs */
  #endif
  
  /*********************************************************************
  *
  *       Functions
  *
  **********************************************************************
  */
  
  typedef struct {
    //
    // Read only file operations. These have to be present on ANY file system, even the simplest one.
    //
    void* (*pfOpenFile)             (const char* sFilename);
    int   (*pfCloseFile)            (void* hFile);
    int   (*pfReadAt)               (void* hFile, void* pBuffer, U32 Pos, U32 NumBytes);
    long  (*pfGetLen)               (void* hFile);
    //
    // Directory query operations.
    //
    void  (*pfForEachDirEntry)      (void* pContext, const char* sDir, void (*pf)(void* pContext, void* pFileEntry));
    void  (*pfGetDirEntryFileName)  (void* pFileEntry, char* sFileName, U32 SizeOfBuffer);
    U32   (*pfGetDirEntryFileSize)  (void* pFileEntry, U32* pFileSizeHigh);
    U32   (*pfGetDirEntryFileTime)  (void* pFileEntry);
    int   (*pfGetDirEntryAttributes)(void* pFileEntry);
    //
    // Write file operations.
    //
    void* (*pfCreate)               (const char* sFileName);
    void* (*pfDeleteFile)           (const char* sFilename);
    int   (*pfRenameFile)           (const char* sOldFilename, const char* sNewFilename);
    int   (*pfWriteAt)              (void* hFile, void* pBuffer, U32 Pos, U32 NumBytes);
    //
    // Additional directory operations
    //
    int   (*pfMKDir)                (const char* sDirName);
    int   (*pfRMDir)                (const char* sDirName);
    //
    // Additional operations
    //
    int   (*pfIsFolder)             (const char* sPath);
    int   (*pfMove)                 (const char* sOldFilename, const char* sNewFilename);
  } IP_FS_API;
  
  extern const IP_FS_API IP_FS_ReadOnly;              // Read-only file system, typically located in flash memory.
  extern const IP_FS_API IP_FS_Win32;                 // File system interface for Win32.
  extern const IP_FS_API IP_FS_Linux;                 // File system interface for Linux
  extern const IP_FS_API IP_FS_FS;                    // Target file system (emFile), shows and allows access to hidden files.
  extern const IP_FS_API IP_FS_FS_AllowHiddenAccess;  // Target file system (emFile), does not show hidden files but allows access to them.
  extern const IP_FS_API IP_FS_FS_DenyHiddenAccess;   // Target file system (emFile), does not show hidden files and does not allow access to them.
  
  void IP_FS_WIN32_ConfigBaseDir(const char* sDir);
  
  
  #if defined(__cplusplus)
    }
  #endif
  
  
  #endif   /* Avoid multiple inclusion */
  
  /*************************** End of file ****************************/
  