--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/.hgignore	Sat Jun 25 18:33:29 2022 -0800
@@ -0,0 +1,3 @@
+syntax: regexp
+
+\.[oa]$

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/libutil/Makefile	Sat Jun 25 18:33:29 2022 -0800
@@ -0,0 +1,13 @@
+CC=	gcc
+CFLAGS=	-O2
+OBJS=	mncc_utils.o sockinit.o
+LIB=	libutil.a
+
+all:	${LIB}
+
+${LIB}:	${OBJS}
+	ar rcu $@ ${OBJS}
+	ranlib $@
+
+clean:
+	rm -f *.[oa] errs

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/libutil/mncc_utils.c	Sat Jun 25 18:33:29 2022 -0800
@@ -0,0 +1,18 @@
+/* simple utility functions for MNCC */
+
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <stdio.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include "../include/mncc.h"
+#include "../include/gsm48_const.h"
+
+mncc_set_cause(msg, loc, val)
+	struct gsm_mncc *msg;
+{
+	msg->fields |= MNCC_F_CAUSE;
+	msg->cause.coding = GSM48_CAUSE_CODING_GSM;
+	msg->cause.location = loc;
+	msg->cause.value = val;
+}

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/libutil/sockinit.c	Sat Jun 25 18:33:29 2022 -0800
@@ -0,0 +1,40 @@
+/*
+ * This library module implements a function that helps initialize
+ * sockaddr for bind or connect operations on UNIX domain sockets.
+ *
+ * Back when I programmed under 4.3BSD UNIX, this operation was simple
+ * and straightforward - but under "modern" Unixes, it appears to be
+ * a complex affair, given the messy code (originally copied from
+ * Osmocom) that appears in FreeCalypso host tools for the rvinterf
+ * local socket interface.  Hence I am factoring that mess out into
+ * its own library function this time around.
+ */
+
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <sys/un.h>
+#include <string.h>
+#include <strings.h>
+
+void
+fill_sockaddr_un(pathname, sunp, lenp)
+	char *pathname;
+	struct sockaddr_un *sunp;
+	unsigned *lenp;
+{
+	/* local socket binding voodoo copied from osmocon */
+	sunp->sun_family = AF_UNIX;
+	strncpy(sunp->sun_path, pathname, sizeof(sunp->sun_path));
+	sunp->sun_path[sizeof(sunp->sun_path) - 1] = '\0';
+	/* we use the same magic that X11 uses in Xtranssock.c for
+	 * calculating the proper length of the sockaddr */
+#if defined(BSD44SOCKETS) || defined(__UNIXWARE__)
+	sunp->sun_len = strlen(sunp->sun_path);
+#endif
+#if defined(BSD44SOCKETS) || defined(SUN_LEN)
+	*lenp = SUN_LEN(sunp);
+#else
+	*lenp = strlen(sunp->sun_path) +
+		offsetof(struct sockaddr_un, sun_path) + 1;
+#endif
+}