bsd/hfs/hfs_vfsutils.c

1449    			struct filefork dfork;
1454 			bzero(&dfork, sizeof(dfork));
1481 			                &dfork.ff_data, &rfork.ff_data);
1486 			cnode.c_blocks = dfork.ff_blocks + rfork.ff_blocks;
1495 			if (dfork.ff_blocks > 0) {
1498 				dfork.ff_cp = &cnode;
1499 				cnode.c_datafork = &dfork;
1501 				fsize = (u_int64_t)dfork.ff_blocks * (u_int64_t)HFSTOVCB(hfsmp)->blockSize;
1503 				    if (fsize > HFS_BIGFILE_SIZE && overflow_extents(&dfork)) {
1509 					if (TruncateFileC(vcb, (FCB*)&dfork, fsize, 1, 0,