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-rw-r--r--src/util/duplex_pipe.c49
1 files changed, 49 insertions, 0 deletions
diff --git a/src/util/duplex_pipe.c b/src/util/duplex_pipe.c
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+/*++
+/* NAME
+/* duplex_pipe 3
+/* SUMMARY
+/* local IPD
+/* SYNOPSIS
+/* #include <iostuff.h>
+/*
+/* int duplex_pipe(fds)
+/* int *fds;
+/* DESCRIPTION
+/* duplex_pipe() uses whatever local primitive it takes
+/* to get a two-way I/O channel.
+/* DIAGNOSTICS
+/* A null result means success. In case of error, the result
+/* is -1 and errno is set to the appropriate number.
+/* 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
+/*--*/
+
+/* System libraries */
+
+#include <sys_defs.h>
+#include <sys/socket.h>
+#include <unistd.h>
+
+/* Utility library. */
+
+#include "iostuff.h"
+#include "sane_socketpair.h"
+
+/* duplex_pipe - give me a duplex pipe or bust */
+
+int duplex_pipe(int *fds)
+{
+#ifdef HAS_DUPLEX_PIPE
+ return (pipe(fds));
+#else
+ return (sane_socketpair(AF_UNIX, SOCK_STREAM, 0, fds));
+#endif
+}
+