bsd/hfs/hfs_btreeio.c

389 	FCB		*filePtr;
394 	filePtr = GetFileControlBlock(vp);
396 	if ( (off_t)minEOF > filePtr->fcbEOF )
398 		bytesToAdd = minEOF - filePtr->fcbEOF;
400 		if (bytesToAdd < filePtr->ff_clumpsize)
401 			bytesToAdd = filePtr->ff_clumpsize;		//XXX why not always be a mutiple of clump size?
422 	(void) BTGetInformation(filePtr, 0, &btInfo);
438 	origSize = filePtr->fcbEOF;
439 	fileblocks = filePtr->ff_blocks;
448 		retval = ExtendFileC(vcb, filePtr, bytesToAdd, 0,
466 	    filePtr->fcbEOF = (u_int64_t)filePtr->ff_blocks * (u_int64_t)vcb->blockSize;
467 	    bytesToAdd = minEOF - filePtr->fcbEOF;
482 	filePtr->fcbEOF = (u_int64_t)filePtr->ff_blocks * (u_int64_t)vcb->blockSize;
488 	if (filePtr->fcbEOF >= (off_t)minEOF && retval != 0) {
498 	if ((filePtr->fcbEOF < (off_t)minEOF) || ((filePtr->fcbEOF - origSize) % btInfo.nodeSize) != 0) {
500 		if (filePtr->fcbEOF < (off_t)minEOF) {
503 			if (filePtr->fcbEOF < origSize) {
505 					  filePtr->fcbEOF, origSize);
508 			trim = filePtr->fcbEOF - origSize;
510 			trim = ((filePtr->fcbEOF - origSize) % btInfo.nodeSize);
513 		ret = TruncateFileC(vcb, filePtr, filePtr->fcbEOF - trim, 0, 0, FTOC(filePtr)->c_fileid, 0);
514 		filePtr->fcbEOF = (u_int64_t)filePtr->ff_blocks * (u_int64_t)vcb->blockSize;
517 		if ((filePtr->fcbEOF % btInfo.nodeSize) != 0) {
519 				  filePtr->fcbEOF, btInfo.nodeSize, filePtr);
525 			      filePtr->fcbEOF, trim, (long)ret);
540 	if ((filePtr->fcbEOF % btInfo.nodeSize) != 0) {
542 			  filePtr, filePtr->fcbEOF, btInfo.nodeSize, trim);
561 	ret = ClearBTNodes(vp, btInfo.nodeSize, origSize, (filePtr->fcbEOF - origSize));