fs50opendir.c

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#ifdef FSS_FTR

#define ACCESS_RIGHTS_INTERNAL_FS
#define FS50OPENDIR_C

#include "Fs.h"


#undef  FILE_NUMBER
#define FILE_NUMBER 50 



#undef PROCEDURE_NUMBER 
#define PROCEDURE_NUMBER 1

void Fs50_01OpenDir( void * pp_Param )
{
   t_FsCmdOpenDir * 	pl_Param = (t_FsCmdOpenDir *) pp_Param;
   fsPath * 		pl_RestOfPath;   	/* Point in the path after the volume name or if 
							the current path is available pointer on it */
   t_ObjectInfo 	sl_Info;
   t_fsEntityStruct * 	pl_FsEntityPtr;		/* Pointer on entity's CB */

   t_fsDIR * 		pl_DirPtr;		/* Pointer on directory structure */
   void *		pl_FmPrivateDirInfo;	/* Pointer on private directory information */
   t_fsVolStruct * 	pl_Volume;

    /* Get entity's context pointer */
    pl_FsEntityPtr = MC_FS_ED_GET_ENTITY_PTR( MC_FS_KERNEL_ID(pl_Param) );

    /* Get volume of object */
    pl_Volume = MC_FS_CO_GIVE_VOLUME_FROM_PATH ( pl_FsEntityPtr, ( fsPath*) pl_Param->p_DirName, 
						&pl_RestOfPath, &sl_Info, &MC_FS_STATUS(pl_Param));

    /* If no volume return ( status was update by function ) */
    if ( pl_Volume == NIL ) return;

    /* Set the interlayer table pointer */
    MC_FS_LL_SET_NEW_VOL(pl_Volume);

    /* Take info on object ( dir exist, object exist, ...) at low layers */
    MC_FS_LL_GET_OBJECT_INFO (&sl_Info, pl_RestOfPath, &MC_FS_STATUS(pl_Param));

    /* If an error in info get return */
    if ( MC_FS_STATUS(pl_Param) != FS_OK ) return;

    /* This file exist do not exist -> error */
    if ( sl_Info.s_FileStatus.v_ObjExist == FALSE)
    {
	/* Updates status in interface structure and return */
	MC_FS_STATUS(pl_Param) = FS_ENOENT;
	return;
	
    }

    /* If the object is not a directory -> err */
    if (  sl_Info.s_FileStatus.v_ObjIsFile  )
    {
	/* Object is a file and not a directory error */
	MC_FS_STATUS(pl_Param) = FS_ENOTDIR;
	return;
    }

    /* open dir on lower layers */
    MC_FS_LL_OPEN_DIR( &sl_Info, &pl_FmPrivateDirInfo, &MC_FS_STATUS(pl_Param));

    /* If an error in open dir return */
    if ( MC_FS_STATUS(pl_Param) != FS_OK ) return;
    
    /* If no error get the directory structure */
    pl_DirPtr = ( t_fsDIR *) MC_FS_GET_MEMORY( sizeof ( t_fsDIR ) );

    /* Update volume of directory */
    pl_DirPtr->p_VolOfDir = pl_Volume;

    /* Updates ID of directory */
    pl_DirPtr->v_DirID = sl_Info.v_ObjID;

    /* In this structure update pointer on private info */
    pl_DirPtr->p_FmPrivateDirInfo = pl_FmPrivateDirInfo;

    /* Update status of position to first element to read */
    pl_DirPtr->v_PosStatus = FS_FIRST_DIR;

    /* Update directory pattern */
    pl_DirPtr->v_Pattern = FS_DIR_PATTERN;

    /* Insert file in entities list */
    MC_FS_ED_INSERT_DIR( pl_FsEntityPtr, pl_DirPtr );

    /* Insert file in the volume list */
    MC_FS_VD_INSERT_DIR_IN_VOL( pl_Volume, pl_DirPtr );

    /* Update file pointer in interface data structure */
    pl_Param->p_DirPtr = pl_DirPtr;

}


#undef PROCEDURE_NUMBER 
#define PROCEDURE_NUMBER 2

u32 Fs50_02ProcessOpenDir( const fsPath * pp_DirName )
{
   /* Reserve message space */
   t_FsCmdOpenDir * pl_OpenDir = (t_FsCmdOpenDir *) MC_FS_GET_MEMORY(sizeof(t_FsCmdOpenDir));

    /* Fill message with input parameters */
    pl_OpenDir->p_DirName = pp_DirName;

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

#endif /* FSS_FTR */