fs52readdir.c

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#ifdef FSS_FTR
#define ACCESS_RIGHTS_INTERNAL_FS
#define FS52READDIR_C

#include "Fs.h"

#undef  FILE_NUMBER
#define FILE_NUMBER 52 



void Fs52_01ReadDir( void * pp_Param )
{
   register t_FsCmdReadDir * 	pl_Param = (t_FsCmdReadDir *) pp_Param;
   register ascii * 		pl_DirName = NIL; /* If end of file is = NIL */
   
   register t_fsDIR *		pl_DirPtr = pl_Param->p_DirPtr;	
   u8 				vl_Found;

/* #ifdef FS_DEBUG  */
    /* Verify if  dir pointer point on a dir if not OK set an error */
    MC_FS_CO_VERIFY_IF_IS_DIR_OF_ENTITY( pl_Param, pl_DirPtr );
    if ( MC_FS_STATUS(pl_Param) != FS_OK ) return;
/* #endif */


    /* If end of file reached we return a null pointer */
    if ( pl_DirPtr->v_PosStatus != FS_END_OF_FILE ) 
    {
	/* If directory pointer place name in open directory structure 
	  	else at address given in directory entry pointer */
        if ( pl_Param->p_DirectoryEntry == NIL ) pl_DirName =  &pl_DirPtr->a_DirName[0];
	else pl_DirName = ( ascii *) pl_Param->p_DirectoryEntry;

        /* Set the interlayer table pointer on new volume */
        MC_FS_LL_SET_NEW_VOL(MC_FS_VD_GET_VOL_PTR_OF_DIR( pl_DirPtr ));


   	/* Read next element through lower layers */
   	MC_FS_LL_READDIR( pl_DirPtr->v_PosStatus, pl_DirPtr->p_FmPrivateDirInfo, 
				pl_DirName, &vl_Found, &MC_FS_STATUS(pl_Param) );

    	/* If element found set status to next and address of dirent structure to
		the structure integrated in the fsDir structure */
    	if (vl_Found && (MC_FS_STATUS(pl_Param) == FS_OK ))
	{
	    pl_DirPtr->v_PosStatus = FS_NEXT_ELEM;
	}
	     /* Not found -> end-of-file reached or error set position status to end of file */
	else
	{
 	    pl_DirPtr->v_PosStatus = FS_END_OF_FILE;
	    pl_DirName = NIL;
	}
    }

    /* Update directory entry pointer */
    pl_Param->p_DirectoryEntry = (t_fss_dirent *) pl_DirName;

}



#undef PROCEDURE_NUMBER 
#define PROCEDURE_NUMBER 2

u32 Fs52_02ProcessReadDir( t_fsDIR * pp_DirPtr )
{
   /* Reserve space for message + space for dirent struct which is placed in message */
   t_FsCmdReadDir * pl_ReadDir = 
	(t_FsCmdReadDir *) MC_FS_GET_MEMORY(sizeof(t_FsCmdReadDir) + sizeof(t_fss_dirent));

    /* Fill message with input parameters */
    pl_ReadDir->p_DirPtr = pp_DirPtr;

    /* Updates directory entry pointer on in message structure 
	( if p_DirectoryEntry is different of NIL dirent data is placed at this address 
	else in t_FsDir structure ( function interface ) */
    pl_ReadDir->p_DirectoryEntry = &(pl_ReadDir->s_DirectoryEntry);

    /* Send message by setting operation and return command identifier */
    return( MC_FS_MA_SEND_CMD_MSG_TO_FS(FS_WITH_ACK, (void*)pl_ReadDir,FS_CMD_READDIR_REQ));
}


#endif /* FSS_FTR */