Manage Kernels (#119)

Implement the script to deal with Debian's 6.1.0-(29|30) kernel problem

bin/asl-kernel-manager

@@ -0,0 +1,125 @@
+#!/usr/bin/bash
+#
+# This script is used to manage the kernel and the APT structure
+# for ASL3-related systems. It is both platform dependent (Pi vs. not Pi)
+# and Debian release dependent (12, 13, etc.)
+
+if [ ${UID} != 0 ]; then
+	echo "$0 only runs as root"
+	exit 1
+fi
+
+DEBIAN_MAJ_VERSION=$(awk -F '\\.' '{print $1}' /etc/debian_version)
+
+#
+# Do Debian 12 fixes
+# 
+function debian_12(){
+
+	# Is this a Pi?
+	is_rpi=$(grep Raspberry /proc/cpuinfo | wc -l)
+
+	# Determine the linux-image and linux-headers
+	if [ ${is_rpi} -gt 0 ]; then
+		KERN_META_PKG=linux-image-rpi-v8
+		NEEDS_BACKPORTS=0
+	else
+		NEEDS_BACKPORTS=1
+		case $(uname -m) in
+			x86_64)
+				KERN_META_PKG=linux-image-amd64
+			;;
+			aarch64)
+				KERN_META_PKG=linux-image-arm64
+			;;
+		esac
+
+		# check if it's a "cloud" kernel
+		if `uname -a | grep -q cloud`; then
+			KERN_META_PKG=$(echo ${KERN_META_PKG} | sed 's/image/image-cloud/g')
+		fi
+	fi
+	KERN_META_PKG_HEADS=$(echo ${KERN_META_PKG} | sed 's/image/headers/g')
+
+	# Pretty-print
+	echo ""
+	echo "         Debian Version: ${1}"
+ 	echo "           Architecture: $(uname -m)"
+ 	echo "         Kernel Package: ${KERN_META_PKG}"
+	echo " Kernel Headers Package: ${KERN_META_PKG_HEADS}"
+	echo ""
+
+	# Remediate if needing a backport
+	if [ ${NEEDS_BACKPORTS} -eq 1 ]; then
+
+		# Check to see if Debian 12 is already remediated
+		if [ -f /etc/asl-kernel-manager/d12-6.1.0-broken ]; then
+			echo ""
+			echo "Task d12-6.1.0-broken already completed; no action"
+			echo ""
+			exit 0
+		fi
+
+		# Enable bookworm-backports
+		echo " Enabling bookworm-backports for this system"
+		remove_marked_kernels
+		enable_bookworm_backports
+		set_semaphore
+		echo ""
+		echo " This system requires a reboot"
+		echo ""
+		wall "asl-kernel-manager needs to reboot the system in 60 seconds"
+		shutdown -r 
+		exit 0
+
+	else
+		echo " Not enabling backports for this system"
+		echo ""
+		exit 0
+	fi
+}
+
+function enable_bookworm_backports() {
+
+	cat - > /etc/apt/sources.list.d/asl3-debian-bookworm-backports.list <<EOF
+#
+# Enable Bookworm Backports for ASL3
+#
+deb http://deb.debian.org/debian bookworm-backports main contrib non-free non-free-firmware
+EOF
+
+	DEBIAN_FRONTEND=noninteractive apt update
+	DEBIAN_FRONTEND=noninteractive \
+		apt upgrade -y -t bookworm-backports $KERN_META_PKG $KERN_MEGA_PKG_HEADS
+
+}
+
+function remove_marked_kernels() {
+	HELD_KERNS=$(apt-mark showhold | grep -E '^linux\-(headers|image)')
+	if [ ! -z "${HELD_KERNS}" ]; then
+		apt-mark unhold ${HELD_KERNS}
+	fi
+}
+
+function set_d12_610_semaphore() {
+	if [ ! -d /etc/asl-kernel-manager ]; then
+			mkdir /etc/asl-kernel-manager
+	fi
+	chmod 700 /etc/asl-kernel-manager
+
+	echo $(date +%s) > /etc/asl-kernel-manager/d12-6.1.0-broken
+	echo $(date --rfc-3339=seconds) >> /etc/asl-kernel-manager/d12-6.1.0-broken
+}
+
+#
+# What Debian version are we on?
+#
+case ${DEBIAN_MAJ_VERSION} in
+	12)
+		debian_12 ${DEBIAN_MAJ_VERSION}
+	;;
+	*)
+		echo "This script does not support Debian ${DEBIAN_MAJ_VERSION}"
+		exit 1
+	;;
+esac

debian/control

@@ -12,7 +12,7 @@ Rules-Requires-Root: binary-targets
 Package: asl3
 Architecture: all
 Depends: ${misc:Depends}, asl3-asterisk, asl3-menu, dahdi-linux, lsb-release, 
-  bind9-dnsutils, uuid, curl, lame, sox, whiptail, python3-serial
+  bind9-dnsutils, uuid, curl, lame, sox, whiptail, python3-serial, dahdi-dkms (>= 3.4.0-6)
 Breaks: asl3-pi-appliance (<< 1.8.0)
 Suggests: allmon3, asl3-update-nodelist
 Description: AllStarLink 3

debian/dirs

@@ -0,0 +1 @@
+etc/asl-kernel-manager

debian/postinst

@@ -0,0 +1,78 @@
+#!/bin/bash
+# postinst script for asl3
+#
+# see: dh_installdeb(1)
+
+# summary of how this script can be called:
+#        * <postinst> `configure' <most-recently-configured-version>
+#        * <old-postinst> `abort-upgrade' <new version>
+#        * <conflictor's-postinst> `abort-remove' `in-favour' <package>
+#          <new-version>
+#        * <postinst> `abort-remove'
+#        * <deconfigured's-postinst> `abort-deconfigure' `in-favour'
+#          <failed-install-package> <version> `removing'
+#          <conflicting-package> <version>
+# for details, see https://www.debian.org/doc/debian-policy/ or
+# the debian-policy package
+#
+
+set -e
+
+function print_kernel_banner() {
+	echo ""
+	echo "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!"
+	echo ""
+( cat - <<EOM
+Some Debian 6.1.0 kernel versions (those after 6.1.0-28) have
+exhibited performance issues with OSS-based USB devices like
+those used by AllStarLink.
+
+!!! Your system is running one of the affected kernels !!!
+
+To address this issue we recommend that your system be configured
+to use Debian Bookworm-Backports to obtain the latest 6.11.0 based
+kernel. The newer kernel restores proper Asterisk/app_rpt support
+for AllStarLink.
+When this upgrade completes, run /usr/bin/asl-kernel-manager
+and reboot the system when prompted
+EOM
+) | fmt
+	echo ""
+	echo "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!"
+	echo ""
+	sleep 5
+}
+
+function do_configure() {
+	if [ ! -f /etc/asl-kernel-manager/d12-6.1.0-broken ]; then
+		is_rpi=$(grep Raspberry /proc/cpuinfo | wc -l)
+		if [ "${is_rpi}" -eq 0 ]; then
+			if `dpkg --compare-versions $(uname -r) gt 6.1.0-28-amd64` &&
+				`dpkg --compare-versions $(uname -r) lt 6.11.0`; then
+				print_kernel_banner
+			fi
+		fi
+	fi
+}
+
+case "$1" in
+    configure)
+	do_configure
+    ;;
+
+    abort-upgrade|abort-remove|abort-deconfigure)
+    ;;
+
+    *)
+        echo "postinst called with unknown argument \`$1'" >&2
+        exit 1
+    ;;
+esac
+
+# dh_installdeb will replace this with shell code automatically
+# generated by other debhelper scripts.
+
+#DEBHELPER#
+
+exit 0
+