fs48chdir.c

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#ifdef FSS_FTR


#define ACCESS_RIGHTS_INTERNAL_FS
#define FS48CHDIR_C

#include "Fs.h"


#undef  FILE_NUMBER
#define FILE_NUMBER 48 



#undef PROCEDURE_NUMBER 
#define PROCEDURE_NUMBER 1

void Fs48_01ChDir( void * pp_Param )
{
   t_EntityPathInfo s_EntityPathInfo;
   t_FsCmdChDir * pl_Param = (t_FsCmdChDir *) 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_fsVolStruct * pl_Volume;
   s32 vl_Status = FS_OK;

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

    /* If the path is not absolute -> error */
    if ( *((fssPath *)pl_Param->p_Path) != '/' ) 
    {
	MC_FS_STATUS(pl_Param) = FS_EINVAL;
	return;
    }

    /* Get volume of object */
    pl_Volume = MC_FS_CO_GIVE_VOLUME_FROM_PATH ( pl_FsEntityPtr, (fssPath *)pl_Param->p_Path, 
						&pl_RestOfPath, &sl_Info, 
						&vl_Status);

    /* Is a volume present ? */
    if ( pl_Volume == NIL )
    {
	/* No but the path is equal to "/" then it is OK else error */
	if ( *(((fssPath *)pl_Param->p_Path+1)) != '\0' )
	{
	    MC_FS_STATUS(pl_Param) = vl_Status;
	    return;
	}
    }
    else
    {

        /* 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;

    	/* Verify that the object exist and is a directory else -> err */
    	if ( sl_Info.s_FileStatus.v_ObjExist == FALSE )
    	{
	    /* Updates status in interface structure and return */
	    MC_FS_STATUS(pl_Param) = FS_ENOENT;
	    return;
    	}
    	if (  sl_Info.s_FileStatus.v_ObjIsFile  )
    	{
	    /* Object is a file and not a directory error */
	    MC_FS_STATUS(pl_Param) = FS_ENOTDIR;
	    return;
    	}
    }

    /* Fill structure of path info and memorize it */
    s_EntityPathInfo.p_Path  = (fssPath*)pl_Param->p_Path;
    s_EntityPathInfo.p_CurrVolume  = pl_Volume;
    s_EntityPathInfo.v_PathLenght  = strlen(pl_Param->p_Path);
    s_EntityPathInfo.v_CurrentDirIDLevelN = sl_Info.v_ObjID;
    s_EntityPathInfo.v_CurrentDirIDLevelN_1 = sl_Info.v_DirID;
    s_EntityPathInfo.v_DirLevelNExist = sl_Info.s_FileStatus.v_ObjExist;
    s_EntityPathInfo.v_DirLevelN_1Exist =  sl_Info.s_FileStatus.v_DirExist  ;
    MC_FS_ED_MEMO_PATH( pl_FsEntityPtr, pp_Path , &s_EntityPathInfo);
}



#undef PROCEDURE_NUMBER 
#define PROCEDURE_NUMBER 2

u32 Fs48_02ProcessChDir( u8 vp_Behaviour, const fsPath * pp_Path )
{
   /* Reserve message space */
   t_FsCmdChDir * pl_ChDir = ( t_FsCmdChDir *) MC_FS_GET_MEMORY(sizeof(t_FsCmdChDir));

    /* Fill message with input parameters */
    pl_ChDir->p_Path = pp_Path;

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



#endif /* FSS_FTR */