osfmk/ipc/ipc_right.c

482 	ipc_entry_bits_t bits;
494 	bits = entry->ie_bits;
495 	assert((bits & MACH_PORT_TYPE_RECEIVE) == 0);
496 	assert(IE_BITS_UREFS(bits) > 0);
498 	if (bits & MACH_PORT_TYPE_SEND) {
499                 assert(IE_BITS_TYPE(bits) == MACH_PORT_TYPE_SEND);
501                 assert(IE_BITS_TYPE(bits) == MACH_PORT_TYPE_SEND_ONCE);
502                 assert(IE_BITS_UREFS(bits) == 1);
508 	if ((bits & MACH_PORT_TYPE_SEND) && !(bits & MACH_PORT_TYPE_RECEIVE))
511 	bits = (bits &~ IE_BITS_TYPE_MASK) | MACH_PORT_TYPE_DEAD_NAME;
531 			assert(IE_BITS_UREFS(bits) < MACH_PORT_UREFS_MAX);
532 			bits++;
536 	entry->ie_bits = bits;
558 	ipc_entry_bits_t bits;
561 	bits = entry->ie_bits;
562 	type = IE_BITS_TYPE(bits);
684 	ipc_entry_bits_t bits;
687 	bits = entry->ie_bits;
689 	type = IE_BITS_TYPE(bits);
828 	ipc_entry_bits_t bits;
831 	bits = entry->ie_bits;
832 	type = IE_BITS_TYPE(bits);
841 		assert(IE_BITS_UREFS(bits) > 0);
845 		if (IE_BITS_UREFS(bits) == 1) {
848 			entry->ie_bits = bits-1; /* decrement urefs */
862 		assert(IE_BITS_UREFS(bits) == 1);
869 			bits = entry->ie_bits;
870 			assert(IE_BITS_TYPE(bits) == MACH_PORT_TYPE_DEAD_NAME);
898 		assert(IE_BITS_UREFS(bits) > 0);
904 			bits = entry->ie_bits;
905 			assert(IE_BITS_TYPE(bits) == MACH_PORT_TYPE_DEAD_NAME);
912 		if (IE_BITS_UREFS(bits) == 1) {
934 			entry->ie_bits = bits-1; /* decrement urefs */
952 		assert(IE_BITS_UREFS(bits) > 0);
963 		if (IE_BITS_UREFS(bits) == 1) {
972 			entry->ie_bits = bits &~ (IE_BITS_UREFS_MASK |
975 			entry->ie_bits = bits-1; /* decrement urefs */
1019 	ipc_entry_bits_t bits;
1021 	bits = entry->ie_bits;
1041 		if ((bits & MACH_PORT_TYPE_PORT_SET) == 0)
1044 		assert(IE_BITS_TYPE(bits) == MACH_PORT_TYPE_PORT_SET);
1045 		assert(IE_BITS_UREFS(bits) == 0);
1074 		if ((bits & MACH_PORT_TYPE_RECEIVE) == 0)
1097 		if (bits & MACH_PORT_TYPE_SEND) {
1098 			assert(IE_BITS_TYPE(bits) ==
1100 			assert(IE_BITS_UREFS(bits) > 0);
1101 			assert(IE_BITS_UREFS(bits) < MACH_PORT_UREFS_MAX);
1128 				bits &= ~IE_BITS_TYPE_MASK;
1129 				bits |= MACH_PORT_TYPE_DEAD_NAME;
1132 					bits++;
1134 				entry->ie_bits = bits;
1139 			assert(IE_BITS_TYPE(bits) == MACH_PORT_TYPE_RECEIVE);
1140 			assert(IE_BITS_UREFS(bits) == 0);
1165 		if ((bits & MACH_PORT_TYPE_SEND_ONCE) == 0)
1168 		assert(IE_BITS_TYPE(bits) == MACH_PORT_TYPE_SEND_ONCE);
1169 		assert(IE_BITS_UREFS(bits) == 1);
1210 		if (bits & MACH_PORT_TYPE_SEND_RIGHTS) {
1221 			bits = entry->ie_bits;
1222 		} else if ((bits & MACH_PORT_TYPE_DEAD_NAME) == 0)
1225 		assert(IE_BITS_TYPE(bits) == MACH_PORT_TYPE_DEAD_NAME);
1226 		assert(IE_BITS_UREFS(bits) > 0);
1230 		urefs = IE_BITS_UREFS(bits);
1239 			entry->ie_bits = bits + delta;
1253 		if ((bits & MACH_PORT_TYPE_SEND) == 0)
1269 		urefs = IE_BITS_UREFS(bits);
1288 			if (bits & MACH_PORT_TYPE_RECEIVE) {
1292 				assert(IE_BITS_TYPE(bits) ==
1295 				entry->ie_bits = bits &~ (IE_BITS_UREFS_MASK|
1299 				assert(IE_BITS_TYPE(bits) ==
1315 			entry->ie_bits = bits + delta;
1374 	ipc_entry_bits_t bits;
1378 	bits = entry->ie_bits;
1382 	if (bits & MACH_PORT_TYPE_RECEIVE) {
1393 	} else if (bits & MACH_PORT_TYPE_SEND_RIGHTS) {
1397 		 * recapture the (now dead) bits.
1405 			bits = entry->ie_bits;
1406 			assert(IE_BITS_TYPE(bits) == MACH_PORT_TYPE_DEAD_NAME);
1414 	type |= IE_BITS_TYPE(bits);
1417 	*urefsp = IE_BITS_UREFS(bits);
1436 	ipc_entry_bits_t bits;
1443 	bits= entry->ie_bits;
1448 		if ((bits & MACH_PORT_TYPE_RECEIVE) == 0)
1463 		if ((bits & MACH_PORT_TYPE_RECEIVE) == 0)
1479 		if ((bits & MACH_PORT_TYPE_RECEIVE) == 0)
1499 		if (bits & MACH_PORT_TYPE_DEAD_NAME)
1502 		if ((bits & MACH_PORT_TYPE_SEND_RIGHTS) == 0)
1541 			if ((bits & MACH_PORT_TYPE_SEND_ONCE) == 0)
1544 			if ((bits & MACH_PORT_TYPE_SEND) == 0)
1593 	ipc_entry_bits_t bits;
1602 	bits = entry->ie_bits;
1609 		if ((bits & MACH_PORT_TYPE_RECEIVE) == 0)
1642 		if ((bits & MACH_PORT_TYPE_RECEIVE) == 0)
1675 		if ((bits & MACH_PORT_TYPE_RECEIVE) == 0)
1697 		if (bits & MACH_PORT_TYPE_SEND) {
1698 			assert(IE_BITS_TYPE(bits) ==
1700 			assert(IE_BITS_UREFS(bits) > 0);
1707 			assert(IE_BITS_TYPE(bits) == MACH_PORT_TYPE_RECEIVE);
1708 			assert(IE_BITS_UREFS(bits) == 0);
1714 		entry->ie_bits = bits &~ MACH_PORT_TYPE_RECEIVE;
1729 		if (bits & MACH_PORT_TYPE_DEAD_NAME)
1734 		if ((bits & MACH_PORT_TYPE_SEND_RIGHTS) == 0)
1737 		assert(IE_BITS_UREFS(bits) > 0);
1743 			bits = entry->ie_bits;
1759 		if ((bits & MACH_PORT_TYPE_SEND) == 0) {
1760 			assert(IE_BITS_TYPE(bits) == MACH_PORT_TYPE_SEND_ONCE);
1781 		if (bits & MACH_PORT_TYPE_DEAD_NAME)
1786 		if ((bits & MACH_PORT_TYPE_SEND_RIGHTS) == 0)
1789 		assert(IE_BITS_UREFS(bits) > 0);
1795 			bits = entry->ie_bits;
1812 		if ((bits & MACH_PORT_TYPE_SEND) == 0) {
1813 			assert(IE_BITS_TYPE(bits) == MACH_PORT_TYPE_SEND_ONCE);
1822 		if (IE_BITS_UREFS(bits) == 1) {
1823 			if (bits & MACH_PORT_TYPE_RECEIVE) {
1826 				assert(IE_BITS_TYPE(bits) ==
1831 				assert(IE_BITS_TYPE(bits) ==
1840 			entry->ie_bits = bits &~
1845 			entry->ie_bits = bits-1; /* decrement urefs */
1858 		if (bits & MACH_PORT_TYPE_DEAD_NAME)
1863 		if ((bits & MACH_PORT_TYPE_SEND_RIGHTS) == 0)
1866 		assert(IE_BITS_UREFS(bits) > 0);
1872 			bits = entry->ie_bits;
1888 		if ((bits & MACH_PORT_TYPE_SEND_ONCE) == 0) {
1889 			assert(bits & MACH_PORT_TYPE_SEND);
1896 		assert(IE_BITS_TYPE(bits) == MACH_PORT_TYPE_SEND_ONCE);
1897 		assert(IE_BITS_UREFS(bits) == 1);
1904 		entry->ie_bits = bits &~
1920 	assert(IE_BITS_TYPE(bits) == MACH_PORT_TYPE_DEAD_NAME);
1921 	assert(IE_BITS_UREFS(bits) > 0);
1933 	assert(IE_BITS_TYPE(bits) == MACH_PORT_TYPE_DEAD_NAME);
1934 	assert(IE_BITS_UREFS(bits) > 0);
1941 	if (IE_BITS_UREFS(bits) == 1) {
1942 		bits &= ~MACH_PORT_TYPE_DEAD_NAME;
1944 	entry->ie_bits = bits-1; /* decrement urefs */
1971 	ipc_entry_bits_t bits;
1973 	bits = entry->ie_bits;
1984 		assert(IE_BITS_TYPE(bits) == MACH_PORT_TYPE_NONE);
1987 		entry->ie_bits = ((bits &~ IE_BITS_RIGHT_MASK) |
1990 	} else if (IE_BITS_TYPE(bits) == MACH_PORT_TYPE_NONE) {
1994 		entry->ie_bits = ((bits &~ IE_BITS_RIGHT_MASK) |
1996 	} else if (IE_BITS_TYPE(bits) == MACH_PORT_TYPE_DEAD_NAME) {
1998 		assert(IE_BITS_UREFS(bits) > 0);
2001 			assert(IE_BITS_UREFS(bits) < MACH_PORT_UREFS_MAX);
2002 			entry->ie_bits = bits+1; /* increment urefs */
2007 		assert(IE_BITS_TYPE(bits) == MACH_PORT_TYPE_SEND);
2010 		assert(IE_BITS_UREFS(bits) > 0);
2013 			assert(IE_BITS_UREFS(bits) < MACH_PORT_UREFS_MAX-1);
2014 			entry->ie_bits = bits+1; /* increment urefs */
2056 	ipc_entry_bits_t bits;
2069 	bits = entry->ie_bits;
2071 	if ((bits & MACH_PORT_TYPE_SEND) == 0)
2074 	urefs = IE_BITS_UREFS(bits);
2100 		if (bits & MACH_PORT_TYPE_RECEIVE) {
2103 			assert(IE_BITS_TYPE(bits) ==
2110 			assert(IE_BITS_TYPE(bits) == MACH_PORT_TYPE_SEND);
2121 		entry->ie_bits = bits &~ (IE_BITS_UREFS_MASK|MACH_PORT_TYPE_SEND);
2126 		entry->ie_bits = bits-2; /* decrement urefs */
2173 	ipc_entry_bits_t bits;
2179 	bits = entry->ie_bits;
2191 		assert(IE_BITS_TYPE(bits) == MACH_PORT_TYPE_NONE);
2210 		entry->ie_bits = bits | (MACH_PORT_TYPE_SEND_ONCE | 1);
2231 		if (bits & MACH_PORT_TYPE_SEND) {
2232 			mach_port_urefs_t urefs = IE_BITS_UREFS(bits);
2255 		} else if (bits & MACH_PORT_TYPE_RECEIVE) {
2256 			assert(IE_BITS_TYPE(bits) == MACH_PORT_TYPE_RECEIVE);
2257 			assert(IE_BITS_UREFS(bits) == 0);
2264 			assert(IE_BITS_TYPE(bits) == MACH_PORT_TYPE_NONE);
2265 			assert(IE_BITS_UREFS(bits) == 0);
2276 		entry->ie_bits = (bits | MACH_PORT_TYPE_SEND) + 1;
2304 		assert((bits & MACH_PORT_TYPE_RECEIVE) == 0);
2306 		if (bits & MACH_PORT_TYPE_SEND) {
2307 			assert(IE_BITS_TYPE(bits) == MACH_PORT_TYPE_SEND);
2308 			assert(IE_BITS_UREFS(bits) > 0);
2319 			assert(IE_BITS_TYPE(bits) == MACH_PORT_TYPE_NONE);
2320 			assert(IE_BITS_UREFS(bits) == 0);
2325 		entry->ie_bits = bits | MACH_PORT_TYPE_RECEIVE;
2362 	ipc_entry_bits_t bits = oentry->ie_bits;
2379 		assert(bits & MACH_PORT_TYPE_PORT_RIGHTS);
2386 			bits = oentry->ie_bits;
2388 			assert(IE_BITS_TYPE(bits) == MACH_PORT_TYPE_DEAD_NAME);
2402 	nentry->ie_bits |= bits & IE_BITS_RIGHT_MASK;
2406 	switch (IE_BITS_TYPE(bits)) {