From 5b17e619510c929eb04dee5f9ac3c33b823dd25e Mon Sep 17 00:00:00 2001
From: Richard Fuchs <rfuchs@sipwise.com>
Date: Mon, 26 Jun 2023 11:45:26 -0400
Subject: [PATCH] MT#55283 add modprobe.d fragment

If the kernel module is loaded automatically/implicitly through
insertion of an iptables rule, it gets loaded with only the default
module parameters. Add a modprobe.d fragment to handle this case.

Change-Id: I08659e2f0db8fed401cbcce6edee51e942da1f3e
(cherry picked from commit 85b8a765d19681332884af9315c6f099e26b2a7a)
---
 debian/ngcp-rtpengine-daemon.postinst | 12 ++++++++++++
 debian/ngcp-rtpengine-daemon.postrm   |  4 ++++
 2 files changed, 16 insertions(+)

diff --git a/debian/ngcp-rtpengine-daemon.postinst b/debian/ngcp-rtpengine-daemon.postinst
index f7be6d0b0..9712b77d8 100644
--- a/debian/ngcp-rtpengine-daemon.postinst
+++ b/debian/ngcp-rtpengine-daemon.postinst
@@ -43,6 +43,18 @@ if [ "$1" = configure ]; then
 			chmod 0770 "$DIR"
 		fi
 	done
+	# set up modprobe.d fragment for auto-load usage
+	if ! [ -f /etc/modprobe.d/rtpengine.conf ] || grep -q DPKG-GENERATED /etc/modprobe.d/rtpengine.conf; then
+		OPTIONS="options xt_RTPENGINE proc_mask=0x7"
+
+		PUID=$(id -u rtpengine 2> /dev/null)
+		test -z "$PUID" || OPTIONS="$OPTIONS proc_uid=$PUID"
+		PGID=$(id -g rtpengine 2> /dev/null)
+		test -z "$PGID" || OPTIONS="$OPTIONS proc_gid=$PGID"
+
+		( echo "# DPKG-GENERATED FILE";
+		  echo "$OPTIONS" ) > /etc/modprobe.d/rtpengine.conf
+	fi
 fi
 
 #DEBHELPER#
diff --git a/debian/ngcp-rtpengine-daemon.postrm b/debian/ngcp-rtpengine-daemon.postrm
index 1826fe80b..7dc97dbd3 100644
--- a/debian/ngcp-rtpengine-daemon.postrm
+++ b/debian/ngcp-rtpengine-daemon.postrm
@@ -5,6 +5,10 @@ set -e
 if [ "$1" = purge ]; then
 	deluser --quiet --system rtpengine > /dev/null || true
 	delgroup --quiet --system rtpengine > /dev/null || true
+
+	if [ -f /etc/modprobe.d/rtpengine.conf ] && grep -q DPKG-GENERATED /etc/modprobe.d/rtpengine.conf; then
+		rm -f /etc/modprobe.d/rtpengine.conf
+	fi
 fi
 
 #DEBHELPER#