From a34783228949dbca4bee13033f70cdee64ad9a66 Mon Sep 17 00:00:00 2001
From: root <jan.kratochvil@redhat.com>
Date: Jun 27 2019 07:37:45 +0000
Subject: New option --sysrq.


---

diff --git a/arm-image-installer b/arm-image-installer
index 90b5aea..ef612ff 100755
--- a/arm-image-installer
+++ b/arm-image-installer
@@ -17,6 +17,7 @@ Usage: $(basename ${0}) <options>
 	--image=IMAGE	- xz compressed image file name
 	--media=DEVICE	- media device file (/dev/[sdX|mmcblkX])
 	--norootpass	- Remove the root password
+	--sysrq		- Enable System Request debugging of the kernel
 	--resizefs	- Resize root filesystem to fill media device
 	--supported	- List of supported hardware
 	--target=TARGET	- target board
@@ -103,6 +104,9 @@ while [ $# -gt 0 ]; do
 		--norootpass)
 			NOROOTPASS=1
 			;;
+		--sysrq)
+			SYSRQ=1
+			;;
 		--resizefs)
 			RESIZEFS=1
 			;;
@@ -222,6 +226,10 @@ fi
 if [ "$NOROOTPASS" != "" ]; then
 	echo "= Root Password will be removed."
 fi
+# Enable System Request debugging of the kernel
+if [ "$SYSRQ" != "" ]; then
+	echo "= System Request debugging of the kernel will be enabled."
+fi
 # Resize root filesystem to fill media device
 if [ "$RESIZEFS" != "" ]; then
 	echo "= Root partition will be resized"
@@ -461,6 +469,14 @@ if [ "$NOROOTPASS" = "1" ]; then
 	echo "= Removing the root password."
 	sed -i 's/root:x:/root::/' /tmp/root/etc/passwd
 fi
+# Enable System Request debugging of the kernel
+if [ "$SYSRQ" != "" ]; then
+	echo "= Enabling System Request debugging of the kernel."
+	cat >> /tmp/root/etc/sysctl.d/arm-image-installer-sysrq.conf <<-EOH
+		# Controls the System Request debugging functionality of the kernel
+		kernel.sysrq = 1
+	EOH
+fi
 # Add ssh key to the image
 if [ "$SSH_KEY" != "" ]; then
 	if [ -f $SSH_KEY ]; then