/*
** CheckVol gets the volume's real vRefNum and builds a volID. The volID
** is used to help insure that calls to resume searching with IndexedSearch
** are to the same volume as the last call to IndexedSearch.
*/
static OSErr CheckVol(ConstStr255Param pathname,
short vRefNum,
short *realVRefNum,
long *volID)
{
HParamBlockRec pb;
OSErr error;
error = GetVolumeInfoNoName(pathname, vRefNum, &pb);
if ( error == noErr )
{
/* Return the real vRefNum */
*realVRefNum = pb.volumeParam.ioVRefNum;
/* Add together a bunch of things that aren't supposed to change on */
/* a mounted volume that's being searched and that should come up with */
/* a fairly unique number */
*volID = pb.volumeParam.ioVCrDate +
pb.volumeParam.ioVRefNum +
pb.volumeParam.ioVNmAlBlks +
pb.volumeParam.ioVAlBlkSiz +
pb.volumeParam.ioVFSID;
}
return ( error );
}
static pascal OSErr DetermineVRefNum(ConstStr255Param pathname,
short vRefNum,
short *realVRefNum)
{
HParamBlockRec pb;
OSErr error;
error = GetVolumeInfoNoName(pathname,vRefNum, &pb);
if ( error == noErr )
{
*realVRefNum = pb.volumeParam.ioVRefNum;
}
return ( error );
}