iokit/Kernel/IODMACommand.cpp

338     length = segment.fLength;
689 	length = fMDSummary.fLength;
764 		mapArgs.fLength = state->fPreparedLength;
904     UInt64   length  = min(segment.fLength, context->remaining);
1040 	    state->fLength = memLength - offset;
1050 		    for (checkOffset = 0; checkOffset < state->fLength; )
1056 				    state->fIOVMAddr + checkOffset, fMapper->mapAddr(state->fIOVMAddr + checkOffset), state->fLength,
1075 		assert(state->fLength);
1076 		if ((curSeg.fIOVMAddr + curSeg.fLength) == state->fIOVMAddr) {
1077 		    UInt64 length = state->fLength;
1079 		    curSeg.fLength  += length;
1084 		state->fIOVMAddr = state->fLength = 0;	// At end
1092 	    UInt64 length = state->fLength;
1095 	    curSeg.fLength   = length;
1101 	    if ((kWalkClient & op) && (curSeg.fIOVMAddr + curSeg.fLength - 1) > maxPhys)
1114 		    DEBG("trunc %qx, %qx-> %qx\n", curSeg.fIOVMAddr, curSeg.fLength, newLength);
1115 		    remain	     = curSeg.fLength - newLength;
1117 		    curSeg.fLength   = newLength;
1118 		    state->fLength   = remain;
1128 		    DEBG("sparse switch %qx, %qx ", addr, curSeg.fLength);
1147 		    if (newLength < curSeg.fLength)
1149 			remain		 = curSeg.fLength - newLength;
1151 			curSeg.fLength	 = newLength;
1152 			state->fLength	 = remain;
1155 		    DEBG("-> %qx, %qx offset %qx\n", curSeg.fIOVMAddr, curSeg.fLength, offset);
1159 	    if (curSeg.fLength > fMaxSegmentSize)
1161 		UInt64 remain = curSeg.fLength - fMaxSegmentSize;
1164 		curSeg.fLength   = fMaxSegmentSize;
1166 		state->fLength   = remain;
1180 		curSeg.fLength   -= (offset - memLength);
1182 		state->fIOVMAddr = state->fLength = 0;	// At end
1220 	&& ((segment.fIOVMAddr + segment.fLength - 1) >> target->fNumAddressBits)
1223 	DEBG("kIOReturnMessageTooLarge(fNumAddressBits) %qx, %qx\n", segment.fIOVMAddr, segment.fLength);
1229 	DEBG("kIOReturnMessageTooLarge(fOutSeg) %qx, %qx\n", segment.fIOVMAddr, segment.fLength);
1252     base[outSegIndex].fLength   = (UInt32) segment.fLength;
1263     OSWriteBigInt32(vSegList, offLen,  (UInt32) segment.fLength);
1274     OSWriteLittleInt32(vSegList, offLen,  (UInt32) segment.fLength);
1294     OSWriteBigInt64(vSegList, offLen,  (UInt64) segment.fLength);
1305     OSWriteLittleInt64(vSegList, offLen,  (UInt64) segment.fLength);