Turn off magic sysrq

src/freedombone-utils-setup

@@ -286,6 +286,18 @@ function initial_setup {
     mark_completed $FUNCNAME
 }
 
+function turn_off_magic_sysrq {
+    if grep -q 'kernel.sysrq = 0' /etc/sysctl.conf; then
+        return
+    fi
+    if grep -q 'kernel.sysrq' /etc/sysctl.conf; then
+        sed -i 's|#kernel.sysrq.*|kernel.sysrq = 0|g' /etc/sysctl.conf
+        sed -i 's|kernel.sysrq.*|kernel.sysrq = 0|g' /etc/sysctl.conf
+    else
+        echo 'kernel.sysrq = 0' >> /etc/sysctl.conf
+    fi
+}
+
 function setup_grub {
     if [[ $ARCHITECTURE == 'qemu'* || $ARCHITECTURE == 'amd64' || $ARCHITECTURE == 'x86_64' || $ARCHITECTURE == 'i686' || $ARCHITECTURE == 'i386' ]]; then
         if ! grep -q 'ifnames=0' /etc/default/grub; then
@@ -782,6 +794,9 @@ function setup_utils {
     function_check enable_predictable_device_names
     enable_predictable_device_names
 
+    function_check turn_off_magic_sysrq
+    turn_off_magic_sysrq
+
     function_check separate_tmp_filesystem
     separate_tmp_filesystem 150