Prepare for radical source tree reorganization.zack/build-layout-experiment

All top-level files and directories are moved into a temporary storage
directory, REORG.TODO, except for files that will certainly still
exist in their current form at top level when we're done (COPYING,
COPYING.LIB, LICENSES, NEWS, README), all old ChangeLog files (which
are moved to the new directory OldChangeLogs, instead), and the
generated file INSTALL (which is just deleted; in the new order, there
will be no generated files checked into version control).

1 files changed, 145 insertions, 0 deletions

diff --git a/REORG.TODO/mach/msg.c b/REORG.TODO/mach/msg.c
new file mode 100644
index 0000000000..bccad7fd26
--- /dev/null
+++ b/REORG.TODO/mach/msg.c
@@ -0,0 +1,145 @@
+/*
+ * Mach Operating System
+ * Copyright (c) 1991,1990,1989, 1995 Carnegie Mellon University
+ * All Rights Reserved.
+ *
+ * Permission to use, copy, modify and distribute this software and its
+ * documentation is hereby granted, provided that both the copyright
+ * notice and this permission notice appear in all copies of the
+ * software, derivative works or modified versions, and any portions
+ * thereof, and that both notices appear in supporting documentation.
+ *
+ * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
+ * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
+ * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
+ *
+ * Carnegie Mellon requests users of this software to return to
+ *
+ *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
+ *  School of Computer Science
+ *  Carnegie Mellon University
+ *  Pittsburgh PA 15213-3890
+ *
+ * any improvements or extensions that they make and grant Carnegie Mellon
+ * the rights to redistribute these changes.
+ */
+#include <mach/port.h>
+#include <mach/message.h>
+
+#ifdef MACH_MSG_OVERWRITE
+/* In variants with this feature, the actual system call is
+   __mach_msg_overwrite_trap.  */
+mach_msg_return_t
+__mach_msg_trap (mach_msg_header_t *msg,
+		 mach_msg_option_t option,
+		 mach_msg_size_t send_size,
+		 mach_msg_size_t rcv_size,
+		 mach_port_t rcv_name,
+		 mach_msg_timeout_t timeout,
+		 mach_port_t notify)
+{
+  return __mach_msg_overwrite_trap (msg, option, send_size,
+				    rcv_size, rcv_name, timeout, notify,
+				    MACH_MSG_NULL, 0);
+}
+weak_alias (__mach_msg_trap, mach_msg_trap)
+
+/* See comments below in __mach_msg.  */
+mach_msg_return_t
+__mach_msg_overwrite (mach_msg_header_t *msg,
+		      mach_msg_option_t option,
+		      mach_msg_size_t send_size,
+		      mach_msg_size_t rcv_size,
+		      mach_port_t rcv_name,
+		      mach_msg_timeout_t timeout,
+		      mach_port_t notify,
+		      mach_msg_header_t *rcv_msg,
+		      mach_msg_size_t rcv_msg_size)
+
+{
+  mach_msg_return_t ret;
+
+  /* Consider the following cases:
+     1. Errors in pseudo-receive (eg, MACH_SEND_INTERRUPTED
+     plus special bits).
+     2. Use of MACH_SEND_INTERRUPT/MACH_RCV_INTERRUPT options.
+     3. RPC calls with interruptions in one/both halves.
+  */
+
+  ret = __mach_msg_overwrite_trap (msg, option, send_size,
+				   rcv_size, rcv_name, timeout, notify,
+				   rcv_msg, rcv_msg_size);
+  if (ret == MACH_MSG_SUCCESS)
+    return MACH_MSG_SUCCESS;
+
+  if (!(option & MACH_SEND_INTERRUPT))
+    while (ret == MACH_SEND_INTERRUPTED)
+      ret = __mach_msg_overwrite_trap (msg, option, send_size,
+				       rcv_size, rcv_name, timeout, notify,
+				       rcv_msg, rcv_msg_size);
+
+  if (!(option & MACH_RCV_INTERRUPT))
+    while (ret == MACH_RCV_INTERRUPTED)
+      ret = __mach_msg_overwrite_trap (msg, option & ~MACH_SEND_MSG,
+				       0, rcv_size, rcv_name, timeout, notify,
+				       rcv_msg, rcv_msg_size);
+
+  return ret;
+}
+weak_alias (__mach_msg_overwrite, mach_msg_overwrite)
+#endif
+
+mach_msg_return_t
+__mach_msg (mach_msg_header_t *msg,
+	    mach_msg_option_t option,
+	    mach_msg_size_t send_size,
+	    mach_msg_size_t rcv_size,
+	    mach_port_t rcv_name,
+	    mach_msg_timeout_t timeout,
+	    mach_port_t notify)
+{
+  mach_msg_return_t ret;
+
+  /* Consider the following cases:
+     1. Errors in pseudo-receive (eg, MACH_SEND_INTERRUPTED
+     plus special bits).
+     2. Use of MACH_SEND_INTERRUPT/MACH_RCV_INTERRUPT options.
+     3. RPC calls with interruptions in one/both halves.
+     */
+
+  ret = __mach_msg_trap (msg, option, send_size,
+			 rcv_size, rcv_name, timeout, notify);
+  if (ret == MACH_MSG_SUCCESS)
+    return MACH_MSG_SUCCESS;
+
+  if (!(option & MACH_SEND_INTERRUPT))
+    while (ret == MACH_SEND_INTERRUPTED)
+      ret = __mach_msg_trap (msg, option, send_size,
+			     rcv_size, rcv_name, timeout, notify);
+
+  if (!(option & MACH_RCV_INTERRUPT))
+    while (ret == MACH_RCV_INTERRUPTED)
+      ret = __mach_msg_trap (msg, option & ~MACH_SEND_MSG,
+			     0, rcv_size, rcv_name, timeout, notify);
+
+  return ret;
+}
+weak_alias (__mach_msg, mach_msg)
+
+mach_msg_return_t
+__mach_msg_send	(mach_msg_header_t *msg)
+{
+  return __mach_msg (msg, MACH_SEND_MSG,
+		     msg->msgh_size, 0, MACH_PORT_NULL,
+		     MACH_MSG_TIMEOUT_NONE, MACH_PORT_NULL);
+}
+weak_alias (__mach_msg_send, mach_msg_send)
+
+mach_msg_return_t
+__mach_msg_receive (mach_msg_header_t *msg)
+{
+  return __mach_msg (msg, MACH_RCV_MSG,
+		     0, msg->msgh_size, msg->msgh_local_port,
+		     MACH_MSG_TIMEOUT_NONE, MACH_PORT_NULL);
+}
+weak_alias (__mach_msg_receive, mach_msg_receive)