X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/91447636331957f3d9b5ca5b508f07c526b0074d..c0fea4742e91338fffdcf79f86a7c1d5e2b97eb1:/osfmk/ipc/mach_msg.c

diff --git a/osfmk/ipc/mach_msg.c b/osfmk/ipc/mach_msg.c
index f532b5230..7600f56ec 100644
--- a/osfmk/ipc/mach_msg.c
+++ b/osfmk/ipc/mach_msg.c
@@ -582,6 +582,7 @@ mach_msg_overwrite_trap(
 	mach_port_name_t	notify = args->notify;
 	mach_vm_address_t	rcv_msg_addr = args->rcv_msg;
         mach_msg_size_t		scatter_list_size = 0; /* NOT INITIALIZED - but not used in pactice */
+	mach_port_seqno_t temp_seqno = 0;
 
 	register mach_msg_header_t *hdr;
 	mach_msg_return_t  mr = MACH_MSG_SUCCESS;
@@ -1488,7 +1489,6 @@ mach_msg_overwrite_trap(
 
 	    slow_copyin:
 	    {
-		mach_port_seqno_t temp_seqno = 0;
 		register mach_port_name_t reply_name =
 			        (mach_port_name_t)hdr->msgh_local_port;
 
@@ -1581,7 +1581,6 @@ mach_msg_overwrite_trap(
 
 	    {
 		register ipc_port_t	reply_port;
-		mach_port_seqno_t	local_seqno;
 		spl_t s;
 
 		/*
@@ -1658,7 +1657,7 @@ mach_msg_overwrite_trap(
 		 * no threads blocked waiting to send.
 		 */
 		dest_port = reply_port;
-		local_seqno = rcv_mqueue->imq_seqno++;
+		temp_seqno = rcv_mqueue->imq_seqno++;
 		imq_unlock(rcv_mqueue);
 		splx(s);
 
@@ -1670,7 +1669,7 @@ mach_msg_overwrite_trap(
 		ip_check_unlock(reply_port);
 
 		if (option & MACH_RCV_TRAILER_MASK) {
-			trailer->msgh_seqno = local_seqno;	
+			trailer->msgh_seqno = temp_seqno;	
 			trailer->msgh_trailer_size = REQUESTED_TRAILER_SIZE(option);
 		}
 		/* copy out the kernel reply */
@@ -1755,6 +1754,7 @@ mach_msg_overwrite_trap(
 		/* LP64support - have to compute real size as it would be received */
 		reply_size = ipc_kmsg_copyout_size(kmsg, current_map()) +
 		             REQUESTED_TRAILER_SIZE(option);
+		temp_seqno = trailer->msgh_seqno;
 		if (rcv_size < reply_size) {
 			if (msg_receive_error(kmsg, msg_addr, option, temp_seqno,
 				        space) == MACH_RCV_INVALID_DATA) {