fs87synchinterf.c

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/*S(***************************************************************************
 * Semantic name : Fs87_13Fread()
 * Object :  Fread Synchronous POSIX API 
 * Finite state machine :
 * Event :
 * Transition :
 *----------------------------------------------------------------------------*
 *
 * Input parameters  :
 * -------------------
 *    vp_ElementSize - size of one element
 *    vp_NumberOfElements - no. of elements
 *    pp_Stream - file handle    
 *
 * Output parameters :
 * -------------------
 *    pp_Buff - contain the data read 
 *                      
 *                   
 * Used variables    :
 * -------------------
 *    GLOBAL:
 *
 *
 * Used procedures   :
 * -------------------
 *                  -MC_FS_MA_SEND_CMD_MSG_TO_FS
 *----------------------------------------------------------------------------*
 *----------------------------------------------------------------------------*
 *                                    DESCRIPTION
 *               
 *        Synchronous function interface to FSS
 *           -Sends REQ message to FS
 *           -Returns number of elements read or an error code
 *  
 *----------------------------------------------------------------------------*
 **************************************************************************)S*/
#undef PROCEDURE_NUMBER
#define PROCEDURE_NUMBER 13

t_fss_size_t Fs87_13Fread(void *pp_Buff, t_fss_size_t vp_ElementSize,
		 t_fss_size_t vp_NumberOfElements,t_fssFILE *pp_Stream)
{
   s32   vl_return;
   s32   vl_ErrCode;
   u8    vl_SemName;

   /* Reserve message space */
   t_FsCmdFRead * pl_FRead =
                  (t_FsCmdFRead*) MC_FS_GET_MEMORY( sizeof(t_FsCmdFRead) );

   /* tcmc_BRC */ 
   MC_FSS_FLASH_SEM_CONSUME(FSS_SEM2);

   /* Determine the calling process in order to determine what semaphore to
      consume */
   vl_SemName= Fs87_30DetermineSem();

   if (vl_SemName == NIL)
   {
       MC_FS_STATUS( pl_FRead ) = FS_EINVAL;
   }
   else
   {
       MC_FS_STATUS( pl_FRead ) = FS_OK;
   }
   
   /* Send message to PROCESS_FSS */
   if ( MC_FS_STATUS( pl_FRead ) == FS_OK )
   {
       /* Fill message with input parameters */
       pl_FRead->p_Stream = pp_Stream;
       pl_FRead->p_DestBuff = pp_Buff;
       pl_FRead->v_ElementSize = vp_ElementSize;
       pl_FRead->v_NumberOfElements = vp_NumberOfElements;

       /* Send message by setting operation and return command identifier */
       MC_FS_MA_SEND_CMD_MSG_TO_FS( FS_NO_ACK,
				    (void*)pl_FRead, FS_CMD_FREAD_REQ );

       /* Consume Semaphore */
       MC_RTK_SEM_CONSUME( vl_SemName );
   }

   /* Set the updated err/ok code to corresponding process' global variable */
   vl_ErrCode = MC_FS_STATUS( pl_FRead );
   Fs87_31SetErrorCode( vl_ErrCode );

   /* if the operation is not successful, return an error  */
   if ( MC_FS_STATUS( pl_FRead ) != FS_OK )
   {
       vl_return = FS_ERROR;
   }
   else
   {
       vl_return = pl_FRead->v_NumbOfElementsRead;
   }

   /* Free message space */
   MC_FS_FREE_MEMORY( pl_FRead );

   /* tcmc_BRC */ 
   MC_FSS_FLASH_SEM_PRODUCE(FSS_SEM2);

   return( vl_return );
}

   
/*S(***************************************************************************
 * Semantic name : Fs87_14Mkdir()
 * Object :  Mkdir Synchronous POSIX API 
 * Finite state machine :
 * Event :
 * Transition :
 *----------------------------------------------------------------------------*
 *
 * Input parameters  :
 * -------------------
 *    pp_Path - directory path
 *    vp_Mode - mode of dir
 *
 * Output parameters :
 * -------------------
 *    Return 
 *                       
 *                   
 * Used variables    :
 * -------------------
 *    GLOBAL:
 *
 *
 * Used procedures   :
 * -------------------
 *                  -MC_FS_MA_SEND_CMD_MSG_TO_FS
 *----------------------------------------------------------------------------*
 *----------------------------------------------------------------------------*
 *                                    DESCRIPTION
 *               
 *        Synchronous function interface to FSS
 *           -Sends REQ message to FS
 *           -Returns FS_OK or an error code
 *  
 *----------------------------------------------------------------------------*
 **************************************************************************)S*/
#undef PROCEDURE_NUMBER
#define PROCEDURE_NUMBER 14

s32 Fs87_14Mkdir(const fssPath *pp_Path, t_fss_mod_t vp_Mode)
{
   s32   vl_return;
   s32   vl_ErrCode;
   u8    vl_SemName;

   /* Reserve message space */
   t_FsCmdMkDir * pl_MkDir =
                  (t_FsCmdMkDir*) MC_FS_GET_MEMORY( sizeof(t_FsCmdMkDir) );

   /* tcmc_BRC */ 
   MC_FSS_FLASH_SEM_CONSUME(FSS_SEM2);

   /* Determine the calling process in order to determine what semaphore to
      consume */
   vl_SemName= Fs87_30DetermineSem();

   if (vl_SemName == NIL)
   {
       MC_FS_STATUS( pl_MkDir ) = FS_EINVAL;
   }
   else
   {
       MC_FS_STATUS( pl_MkDir ) = FS_OK;
   }
   
   /* Send message to PROCESS_FSS */
   if ( MC_FS_STATUS( pl_MkDir ) == FS_OK )
   {
       /* Fill message with input parameters */
       pl_MkDir->p_Path = pp_Path;
       pl_MkDir->v_Mode = vp_Mode;

       /* Send message by setting operation and return command identifier */
       MC_FS_MA_SEND_CMD_MSG_TO_FS( FS_NO_ACK,
				    (void*)pl_MkDir, FS_CMD_MKDIR_REQ );

       /* Consume Semaphore */
       MC_RTK_SEM_CONSUME( vl_SemName );
   }

   /* Set the updated err/ok code to corresponding process' global variable */
   vl_ErrCode = MC_FS_STATUS( pl_MkDir );
   Fs87_31SetErrorCode( vl_ErrCode );

   /* if the operation is not successful, return an error  */
   if ( MC_FS_STATUS( pl_MkDir ) != FS_OK )
   {
       vl_return = FS_ERROR;
   }
   else
   {
       vl_return = FS_OK;
   }

   /* Free message space */
   MC_FS_FREE_MEMORY( pl_MkDir );

   /* tcmc_BRC */ 
   MC_FSS_FLASH_SEM_PRODUCE(FSS_SEM2);

   return( vl_return );
}

   
/*S(***************************************************************************
 * Semantic name : Fs87_15Rmdir()
 * Object :  Rmdir Synchronous POSIX API 
 * Finite state machine :
 * Event :
 * Transition :
 *----------------------------------------------------------------------------*
 *
 * Input parameters  :
 * -------------------
 *    pp_Path - directory path
 *
 * Output parameters :
 * -------------------
 *    Return 
 *                       
 *                   
 * Used variables    :
 * -------------------
 *    GLOBAL:
 *
 *
 * Used procedures   :
 * -------------------
 *                  -MC_FS_MA_SEND_CMD_MSG_TO_FS
 *----------------------------------------------------------------------------*
 *----------------------------------------------------------------------------*
 *                                    DESCRIPTION
 *               
 *        Synchronous function interface to FSS
 *           -Sends REQ message to FS
 *           -Returns FS_OK or an error code
 *  
 *----------------------------------------------------------------------------*
 **************************************************************************)S*/
#undef PROCEDURE_NUMBER
#define PROCEDURE_NUMBER 15

s32 Fs87_15Rmdir(const fssPath *pp_Path)
{
   s32   vl_return;
   s32   vl_ErrCode;
   u8    vl_SemName;

   /* Reserve message space */
   t_FsCmdRmDir * pl_RmDir =
                  (t_FsCmdRmDir*) MC_FS_GET_MEMORY( sizeof(t_FsCmdRmDir) );

   /* tcmc_BRC */ 
   MC_FSS_FLASH_SEM_CONSUME(FSS_SEM2);

   /* Determine the calling process in order to determine what semaphore to
      consume */
   vl_SemName= Fs87_30DetermineSem();

   if (vl_SemName == NIL)
   {
       MC_FS_STATUS( pl_RmDir ) = FS_EINVAL;
   }
   else
   {
       MC_FS_STATUS( pl_RmDir ) = FS_OK;
   }
   
   /* Send message to PROCESS_FSS */
   if ( MC_FS_STATUS( pl_RmDir ) == FS_OK )
   {
       /* Fill message with input parameters */
       pl_RmDir->p_Path = pp_Path;

       /* Send message by setting operation and return command identifier */
       MC_FS_MA_SEND_CMD_MSG_TO_FS( FS_NO_ACK,
				    (void*)pl_RmDir, FS_CMD_RMDIR_REQ );

       /* Consume Semaphore */
       MC_RTK_SEM_CONSUME( vl_SemName );
   }

   /* Set the updated err/ok code to corresponding process' global variable */
   vl_ErrCode = MC_FS_STATUS( pl_RmDir );
   Fs87_31SetErrorCode( vl_ErrCode );

   /* if the operation is not successful, return an error  */
   if ( MC_FS_STATUS( pl_RmDir ) != FS_OK )
   {
       vl_return = FS_ERROR;
   }
   else
   {
       vl_return = FS_OK; 
   }

   /* Free message space */
   MC_FS_FREE_MEMORY( pl_RmDir );

   /* tcmc_BRC */ 
   MC_FSS_FLASH_SEM_PRODUCE(FSS_SEM2);

   return( vl_return );
}

   
/*S(***************************************************************************
 * Semantic name : Fs87_16Chdir()
 * Object :  Chdir Synchronous POSIX API 
 * Finite state machine :
 * Event :
 * Transition :
 *----------------------------------------------------------------------------*
 *
 * Input parameters  :
 * -------------------
 *    pp_Path - directory path
 *
 * Output parameters :
 * -------------------
 *    Return 
 *                       
 *                   
 * Used variables    :
 * -------------------
 *    GLOBAL:
 *
 *
 * Used procedures   :
 * -------------------
 *                  -MC_FS_MA_SEND_CMD_MSG_TO_FS
 *----------------------------------------------------------------------------*
 *----------------------------------------------------------------------------*
 *                                    DESCRIPTION
 *               
 *        Synchronous function interface to FSS
 *           -Sends REQ message to FS
 *           -Returns FS_OK or an error code
 *  
 *----------------------------------------------------------------------------*
 **************************************************************************)S*/
#undef PROCEDURE_NUMBER
#define PROCEDURE_NUMBER 16

s32 Fs87_16Chdir(const fssPath *pp_Path)
{
   s32   vl_return;
   s32   vl_ErrCode;
   u8    vl_SemName;

   /* Reserve message space */
   t_FsCmdChDir * pl_ChDir =
                  (t_FsCmdChDir*) MC_FS_GET_MEMORY( sizeof(t_FsCmdChDir) );

   /* tcmc_BRC */ 
   MC_FSS_FLASH_SEM_CONSUME(FSS_SEM2);

   /* Determine the calling process in order to determine what semaphore to
      consume */
   vl_SemName= Fs87_30DetermineSem();

   if (vl_SemName == NIL)
   {
       MC_FS_STATUS(pl_ChDir) = FS_EINVAL;
   }
   else
   {
       MC_FS_STATUS( pl_ChDir ) = FS_OK;
   }
   
   /* Send message to PROCESS_FSS */
   if ( MC_FS_STATUS( pl_ChDir ) == FS_OK )
   {
       /* Fill message with input parameters */
       pl_ChDir->p_Path = pp_Path;

       /* Send message by setting operation and return command identifier */
       MC_FS_MA_SEND_CMD_MSG_TO_FS( FS_NO_ACK,
				    (void*)pl_ChDir, FS_CMD_CHDIR_REQ );

       /* Consume Semaphore */
       MC_RTK_SEM_CONSUME( vl_SemName );
   }

   /* Set the updated err/ok code to corresponding process' global variable */
   vl_ErrCode = MC_FS_STATUS(pl_ChDir);
   Fs87_31SetErrorCode( vl_ErrCode );

   /* if the operation is not successful, return an error  */
   if ( MC_FS_STATUS( pl_ChDir ) != FS_OK )
   {
       vl_return = FS_ERROR;
   }
   else
   {
       vl_return = FS_OK; 
   }

   /* Free message space */
   MC_FS_FREE_MEMORY( pl_ChDir );

   /* tcmc_BRC */ 
   MC_FSS_FLASH_SEM_PRODUCE(FSS_SEM2);

   return( vl_return );
}

   
/*S(***************************************************************************
 * Semantic name : Fs87_17Getcwd()
 * Object :  Getcwd Synchronous POSIX API 
 * Finite state machine :
 * Event :
 * Transition :
 *----------------------------------------------------------------------------*
 *
 * Input parameters  :
 * -------------------
 *    vp_Size - size of the buffer passed
 *
 *
 * Output parameters :
 * -------------------
 *   pp_Buff - contain the directory path 
 *                       
 *                   
 * Used variables    :
 * -------------------
 *    GLOBAL:
 *
 *
 * Used procedures   :
 * -------------------
 *                  -MC_FS_MA_SEND_CMD_MSG_TO_FS
 *----------------------------------------------------------------------------*
 *----------------------------------------------------------------------------*
 *                                    DESCRIPTION
 *               
 *        Synchronous function interface to FSS
 *           -Sends REQ message to FS
 *           -Returns pointer to the directory or NULL
 *  
 *----------------------------------------------------------------------------*
 **************************************************************************)S*/
#undef PROCEDURE_NUMBER
#define PROCEDURE_NUMBER 17