Update ipc/ directory to use mach_port_name_t

Make it explicit where we use port names versus actual ports. For the 64
bit kernel, port names and ports are of different size so this corrects
the syscall arguments and internal structs to have the right size.

This patch also uncovered several issues we need to solve to make
GNUMach work well on 64 bits. First, the mach_msg call will receive 4
byte port names while the kernel "thinks" they are 8 bytes, which will
be a problem. Also, when we send a message, the kernel translates the
port names into port pointers in the message copied from user space.
This also won't work on 64 bits. In this patch, I added several TODOs to fix
the issues later.
Message-Id: <Y4cCzNmc6vC4bjsX@viriathus>

1 files changed, 2 insertions, 2 deletions

diff --git a/kern/ipc_tt.c b/kern/ipc_tt.c
index 04a5a92f..0b10204c 100644
--- a/kern/ipc_tt.c
+++ b/kern/ipc_tt.c
@@ -554,11 +554,11 @@ mach_thread_self(void)
  *		or other errors.
  */
 
-mach_port_t
+mach_port_name_t
 mach_reply_port(void)
 {
 	ipc_port_t port;
-	mach_port_t name;
+	mach_port_name_t name;
 	kern_return_t kr;
 
 	kr = ipc_port_alloc(current_task()->itk_space, &name, &port);