bsd/hfs/hfs_btreeio.c

646 	BTreeControlBlockPtr btcb = NULL;
710 	MALLOC(btcb, BTreeControlBlock *, sizeof(BTreeControlBlock), M_TEMP, M_WAITOK);
711         bzero(btcb, sizeof(BTreeControlBlock));
713 	btcb->nodeSize          = nodesize;
714 	btcb->maxKeyLength      = kHFSPlusAttrKeyMaximumLength;
715 	btcb->btreeType         = 0xFF;
716 	btcb->attributes        = kBTVariableIndexKeysMask | kBTBigKeysMask;
717 	btcb->version           = kBTreeVersion;
718 	btcb->writeCount        = 1;
719 	btcb->flags             = 0;  /* kBTHeaderDirty */
720 	btcb->fileRefNum        = vp;
721 	btcb->getBlockProc      = GetBTreeBlock;
722 	btcb->releaseBlockProc  = ReleaseBTreeBlock;
723 	btcb->setEndOfForkProc  = ExtendBTreeFile;
724 	btcb->keyCompareProc    = (KeyCompareProcPtr)hfs_attrkeycompare;
725 	VTOF(vp)->fcbBTCBPtr    = btcb;
741 	btcb->totalNodes = VTOF(vp)->ff_size / nodesize;
761 	if (btcb->totalNodes > temp) {
762 		num_map_nodes = howmany(btcb->totalNodes - temp, bytes_per_map_record * 8);
768 	btcb->freeNodes = btcb->totalNodes - 1 - num_map_nodes;
805 	bthp->totalNodes   = btcb->totalNodes;
806 	bthp->freeNodes    = btcb->freeNodes;
910 		if (btcb) {
911 			FREE (btcb, M_TEMP);