fs23rename.c

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#ifdef FSS_FTR
#define ACCESS_RIGHTS_INTERNAL_FS
#define FS23RENAME_C

#undef  FILE_NUMBER
#define FILE_NUMBER 23 

#include "Fs.h"

#undef PROCEDURE_NUMBER 
#define PROCEDURE_NUMBER 1

void Fs23_01Rename ( void * pp_Param )
{
    t_ObjectInfo sl_OldInfo, sl_NewInfo;

   fsPath * pl_RestOfPathOld;
   fsPath * pl_RestOfPathNew;

   t_fsVolStruct * pl_VolumeOld;
   t_fsVolStruct * pl_VolumeNew;

   t_fsEntityStruct * pl_FsEntityPtr = 0;	/* Pointer on entity's CB */
   t_FssCmdRename *  pl_Param = (t_FssCmdRename *) pp_Param;


  /* Treat volumes of 2 paths ( both must exist and be identical ) */
  /* --------------------------------------------------------------*/

    /* Get entity's context pointer if one of the paths need the entity's current 
	directory */
    if ( ( *((fsPath*) pl_Param->p_OldName) != '/') 
				|| 
	   (*((fsPath*)pl_Param->p_NewName) != '/' ))
    	pl_FsEntityPtr = MC_FS_ED_GET_ENTITY_PTR( MC_FS_KERNEL_ID(pl_Param) );


    /* For old path get volume of object */
    pl_VolumeOld = MC_FS_CO_GIVE_VOLUME_FROM_PATH ( pl_FsEntityPtr, (fsPath*)pl_Param->p_OldName, 
							&pl_RestOfPathOld, &sl_OldInfo, 
							&MC_FS_STATUS(pl_Param) );

     /* If no volume return */
    if ( pl_VolumeOld == NIL ) return;

    /* For old path get volume of object */
    pl_VolumeNew = MC_FS_CO_GIVE_VOLUME_FROM_PATH ( pl_FsEntityPtr, (fsPath*)pl_Param->p_NewName, 
							&pl_RestOfPathNew, &sl_NewInfo, 
							&MC_FS_STATUS(pl_Param) );

     /* If no volume return */
    if (  pl_VolumeNew == NIL ) return;

    /* If volumes are not identical return   */ 
    if ( pl_VolumeNew != pl_VolumeOld )
    {
	/* Volumes not identical-> error */
	MC_FS_STATUS(pl_Param) = FS_EXDEV;

	return;
    }

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


  /* Verify if object to rename exist */
  /*--------------------------------*/

    /* Take info on object ( dir exist, object exist, ...) at lower layer */
    MC_FS_LL_GET_OBJECT_INFO (&sl_OldInfo, pl_RestOfPathOld, &MC_FS_STATUS(pl_Param));

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

    /* This object exist ? */
    if ( sl_OldInfo.s_FileStatus.v_ObjExist )
    {
        /* If  directory do not exist a rename is not possible because it is not possible
		to rename the volume name */
        if ( sl_OldInfo.s_FileStatus.v_DirExist == FALSE) 
        {
	    /* Err unknow destination directory */
	    MC_FS_STATUS(pl_Param) = FS_ENOENT;
	    return;
        }

    }
      /* Object do not exist return err */
    else 
    {
	/* Err unknow file */
	MC_FS_STATUS(pl_Param) = FS_ENOENT;
	return ;
    }


  /* Verify if new path ok ( all directories of path exist but file do not exist ) */
  /*-------------------------------------------------------------------------------*/

    /* Take info on object ( dir exist, object exist, ...) at FM */
    MC_FS_LL_GET_OBJECT_INFO (&sl_NewInfo, pl_RestOfPathNew, &MC_FS_STATUS(pl_Param));

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

    /* If destination directory do not exist a rename is not possible because it is not possible
		to rename the volume name */
    if ( sl_NewInfo.s_FileStatus.v_DirExist == FALSE ) 
    {
	/* Err unknow destination directory */
	MC_FS_STATUS(pl_Param) = FS_ENOENT;
	return;
    }

    /* If new file name exist already a rename is not possible */
    if ( sl_NewInfo.s_FileStatus.v_ObjExist ) 
    {
	/* Is the new object the same that the old then nothing to do return */
	if ( sl_NewInfo.v_ObjID == sl_OldInfo.v_ObjID ) return;

	/* else err file exist */
	MC_FS_STATUS(pl_Param) = FS_EEXIST;
	return;
    }

    /* Ask FM to rename file */
    MC_FS_LL_RENAME( &sl_OldInfo, pl_RestOfPathOld, &sl_NewInfo, pl_RestOfPathNew, 
						&MC_FS_STATUS(pl_Param) );

}


#undef PROCEDURE_NUMBER 
#define PROCEDURE_NUMBER 2

u32 Fs23_02ProcessRename( u8 vp_Behaviour, const fsPath * pp_OldName, const fsPath * pp_NewName)
{
   /* Reserve message space */
   t_FsCmdRename * pl_Rename = ( t_FsCmdRename * ) MC_FS_GET_MEMORY(sizeof(t_FsCmdRename));

    /* Fill message with input parameters */
    pl_Rename->p_OldName = pp_OldName;
    pl_Rename->p_NewName = pp_NewName;

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


#endif /* FSS_FTR */