osfmk/ipc/ipc_kmsg.c

1384 		 * Call the server routine, and get the reply message to send.
1393 		/* fall thru with reply - same options */
1568  *		MACH_SEND_INVALID_REPLY	Can't copyin reply port.
1642 		 *	Destination and reply ports are the same!
1672 			 *	checked for reply port errors above,
1690 			 *	Either dest or reply needs a receive right.
1695 			 *	by reply (and verified by copyin_check) will
1808 		 *	No reply port!  This is an easy case
1851 		 *	For example, suppose both dest and reply are
1863 		 * we intend to separate the dest lookup from the reply copyin
2516  *		MACH_SEND_INVALID_REPLY	Can't copyin reply port.
2587 	/* translate the destination and reply ports */
2596 	 *	The common case is a complex message with no reply port,
2721 	/* translate the destination and reply ports */
2730 	 *	The common case is a complex message with no reply port,
2905  *			Couldn't allocate memory for the reply port.
2930 	ipc_port_t reply = (ipc_port_t) msg->msgh_local_port;
2934 	if (IP_VALID(reply)) {
2939 		 *	Get reply port entry (if none, skip to dest port
2953 			    ipc_right_reverse(space, (ipc_object_t) reply,
2955 				/* reply port is locked and active */
2961 			ip_lock(reply);
2962 			if (!ip_active(reply)) {
2963 				ip_unlock(reply);
2967 				release_port = reply;
2968 				reply = IP_DEAD;
2973 			reply_name = CAST_MACH_PORT_TO_NAME(reply);
2976 				ip_unlock(reply);
2993 			entry->ie_object = (ipc_object_t) reply;
2997 		/* space and reply port are locked and active */
2999 		ip_reference(reply);	/* hold onto the reply port */
3002 				       reply_type, TRUE, (ipc_object_t) reply);
3003 		/* reply port is unlocked */
3010 		 *	No reply port!  This is an easy case.
3024 		reply_name = CAST_MACH_PORT_TO_NAME(reply);
3031 	 *	We still hold a ref for reply (if it is valid).
3042 	 *	copyout of the reply port is a bit tricky.  If there was
3043 	 *	no real reply port (it wasn't IP_VALID) then this isn't
3044 	 *	an issue.  If the reply port was dead at copyout time,
3047 	 *	we serialize after reply died but before dest's (later) death.
3048 	 *	So assume reply was alive when we copied it out.  If dest
3051 	 *	If reply dies/died after dest, then we are OK because
3052 	 *	we serialize after dest died but before reply dies.
3053 	 *	So the hard case is when reply is alive at copyout,
3054 	 *	dest is dead at copyout, and reply died before dest died.
3058 	 *	Because the space lock is held across the copyout of reply
3064 	 *	the time reply was copied-out, so when we pretend
3067 	 *	If dest == reply, then we have to make it look like
3087 		if (IP_VALID(reply)) {
3088 			ip_lock(reply);
3089 			if (ip_active(reply) ||
3091 					       reply->ip_timestamp))
3095 			ip_unlock(reply);
3100 	if (IP_VALID(reply))
3101 		ip_release(reply);
3699 	ipc_object_t reply = (ipc_object_t) kmsg->ikm_header->msgh_local_port;
3708 	      ipc_kmsg_copyout_object(space, reply, reply_type, &reply_name));
3737 	ipc_object_t reply;
3744 	reply = (ipc_object_t) kmsg->ikm_header->msgh_local_port;
3760 	if (IO_VALID(reply)) {
3761 		ipc_object_destroy(reply, reply_type);
3764 		reply_name = CAST_MACH_PORT_TO_NAME(reply);
3940  *		Copies out the destination and reply ports in the message.
3956 	ipc_object_t reply;
3962 	reply = (ipc_object_t) kmsg->ikm_header->msgh_local_port;
3978 	reply_name = CAST_MACH_PORT_TO_NAME(reply);
3994 	ipc_object_t reply;
4000 	reply = (ipc_object_t) kmsg->ikm_header->msgh_local_port;
4016 	reply_name = CAST_MACH_PORT_TO_NAME(reply);