Adding upstream version 3.4.23.upstream/3.4.23upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 75 insertions, 0 deletions

diff --git a/src/master/master_proto.h b/src/master/master_proto.h
new file mode 100644
index 0000000..6084514
--- /dev/null
+++ b/src/master/master_proto.h
@@ -0,0 +1,75 @@
+/*++
+/* NAME
+/*	master_proto 3h
+/* SUMMARY
+/*	master process protocol
+/* SYNOPSIS
+/*	#include <master_proto.h>
+/* DESCRIPTION
+/* .nf
+
+ /*
+  * Transport names. The master passes the transport name on the command
+  * line, and thus the name is part of the master to child protocol.
+  */
+#define MASTER_XPORT_NAME_UNIX	"unix"	/* local IPC */
+#define MASTER_XPORT_NAME_FIFO	"fifo"	/* local IPC */
+#define MASTER_XPORT_NAME_INET	"inet"	/* non-local IPC */
+#define MASTER_XPORT_NAME_PASS	"pass"	/* local IPC */
+#define MASTER_XPORT_NAME_UXDG	"unix-dgram"	/* local IPC */
+
+ /*
+  * Format of a status message sent by a child process to the process
+  * manager. Since this is between processes on the same machine we need not
+  * worry about byte order and word length.
+  */
+typedef struct MASTER_STATUS {
+    int     pid;			/* process ID */
+    unsigned gen;			/* child generation number */
+    int     avail;			/* availability */
+} MASTER_STATUS;
+
+#define MASTER_GEN_NAME	"GENERATION"	/* passed via environment */
+
+#define MASTER_STAT_TAKEN	0	/* this one is occupied */
+#define MASTER_STAT_AVAIL	1	/* this process is idle */
+
+extern int master_notify(int, unsigned, int);	/* encapsulate status msg */
+
+ /*
+  * File descriptors inherited from the master process. The flow control pipe
+  * is read by receive processes and is written to by send processes. If
+  * receive processes get too far ahead they will pause for a brief moment.
+  */
+#define MASTER_FLOW_READ	3
+#define MASTER_FLOW_WRITE	4
+
+ /*
+  * File descriptors inherited from the master process. All processes that
+  * provide a given service share the same status file descriptor, and listen
+  * on the same service socket(s). The kernel decides what process gets the
+  * next connection. Usually the number of listening processes is small, so
+  * one connection will not cause a "thundering herd" effect. When no process
+  * listens on a given socket, the master process will. MASTER_LISTEN_FD is
+  * actually the lowest-numbered descriptor of a sequence of descriptors to
+  * listen on.
+  */
+#define MASTER_STATUS_FD	5	/* shared channel to parent */
+#define MASTER_LISTEN_FD	6	/* accept connections here */
+
+/* LICENSE
+/* .ad
+/* .fi
+/*	The Secure Mailer license must be distributed with this software.
+/* AUTHOR(S)
+/*	Wietse Venema
+/*	IBM T.J. Watson Research
+/*	P.O. Box 704
+/*	Yorktown Heights, NY 10598, USA
+/*
+/*	Wietse Venema
+/*	Google, Inc.
+/*	111 8th Avenue
+/*	New York, NY 10011, USA
+/*--*/
+