bsd/hfs/hfs_btreeio.c

364 	FCB		*filePtr;
369 	filePtr = GetFileControlBlock(vp);
371 	if ( (off_t)minEOF > filePtr->fcbEOF )
373 		bytesToAdd = minEOF - filePtr->fcbEOF;
375 		if (bytesToAdd < filePtr->ff_clumpsize)
376 			bytesToAdd = filePtr->ff_clumpsize;		//XXX why not always be a mutiple of clump size?
397 	(void) BTGetInformation(filePtr, 0, &btInfo);
413 	origSize = filePtr->fcbEOF;
414 	fileblocks = filePtr->ff_blocks;
423 		retval = ExtendFileC(vcb, filePtr, bytesToAdd, 0,
441 	    filePtr->fcbEOF = (u_int64_t)filePtr->ff_blocks * (u_int64_t)vcb->blockSize;
442 	    bytesToAdd = minEOF - filePtr->fcbEOF;
457 	filePtr->fcbEOF = (u_int64_t)filePtr->ff_blocks * (u_int64_t)vcb->blockSize;
463 	if (filePtr->fcbEOF >= (off_t)minEOF && retval != 0) {
473 	if ((filePtr->fcbEOF < (off_t)minEOF) || ((filePtr->fcbEOF - origSize) % btInfo.nodeSize) != 0) {
475 		if (filePtr->fcbEOF < (off_t)minEOF) {
478 			if (filePtr->fcbEOF < origSize) {
480 					  filePtr->fcbEOF, origSize);
483 			trim = filePtr->fcbEOF - origSize;
485 			trim = ((filePtr->fcbEOF - origSize) % btInfo.nodeSize);
488 		ret = TruncateFileC(vcb, filePtr, filePtr->fcbEOF - trim, 0, 0, FTOC(filePtr)->c_fileid, 0);
489 		filePtr->fcbEOF = (u_int64_t)filePtr->ff_blocks * (u_int64_t)vcb->blockSize;
492 		if ((filePtr->fcbEOF % btInfo.nodeSize) != 0) {
494 				  filePtr->fcbEOF, btInfo.nodeSize, filePtr);
500 			      filePtr->fcbEOF, trim, (long)ret);
515 	if ((filePtr->fcbEOF % btInfo.nodeSize) != 0) {
517 			  filePtr, filePtr->fcbEOF, btInfo.nodeSize, trim);
536 	ret = ClearBTNodes(vp, btInfo.nodeSize, origSize, (filePtr->fcbEOF - origSize));