Checking of initial state added for camera and 1-wire; unnecessary reboots removed.

raspi-config

@@ -640,8 +640,10 @@ get_serial() {
 
 do_serial() {
   DEFAULT=--defaultno
+  CURRENT=0
   if [ $(get_serial) -eq 0 ] ; then
       DEFAULT=
+      CURRENT=1
   fi
 
   if [ "$INTERACTIVE" = True ]; then
@@ -651,6 +653,9 @@ do_serial() {
     get_init_sys
     RET=$1
   fi
+  if [ $RET -eq $CURRENT ]; then
+    ASK_TO_REBOOT=1
+  fi
   if [ $RET -eq 1 ]; then
     if [ $SYSTEMD -eq 0 ]; then
       sed -i /etc/inittab -e "s|^.*:.*:respawn:.*ttyAMA0|#&|"
@@ -659,7 +664,7 @@ do_serial() {
     sed -i /boot/cmdline.txt -e "s/console=serial0,[0-9]\+ //"
     set_config_var enable_uart 0 $CONFIG
     if [ "$INTERACTIVE" = True ]; then
-      whiptail --msgbox "Serial is now disabled" 20 60 1
+      whiptail --msgbox "The serial interface is disabled" 20 60 1
     fi
   elif [ $RET -eq 0 ]; then
     if [ $SYSTEMD -eq 0 ]; then
@@ -681,12 +686,11 @@ do_serial() {
     fi
     set_config_var enable_uart 1 $CONFIG
     if [ "$INTERACTIVE" = True ]; then
-      whiptail --msgbox "Serial is now enabled" 20 60 1
+      whiptail --msgbox "The serial interface is enabled" 20 60 1
     fi
   else
     return $RET
   fi
-  ASK_TO_REBOOT=1
 }
 
 disable_raspi_config_at_boot() {
@@ -935,28 +939,12 @@ registration.\
   read TMP
 }
 
-# $1 is 0 to disable camera, 1 to enable it
+get_camera() {
-set_camera() {
+  CAM=$(get_config_var start_x $CONFIG)
-  # Stop if /boot is not a mountpoint
+  if [ $CAM -eq 1 ]; then
-  if ! mountpoint -q /boot; then
+    echo 0
-    return 1
+  else
-  fi
+    echo 1
-
-  [ -e $CONFIG ] || touch $CONFIG
-
-  if [ "$1" -eq 0 ]; then # disable camera
-    set_config_var start_x 0 $CONFIG
-    sed $CONFIG -i -e "s/^startx/#startx/"
-    sed $CONFIG -i -e "s/^start_file/#start_file/"
-    sed $CONFIG -i -e "s/^fixup_file/#fixup_file/"
-  else # enable camera
-    set_config_var start_x 1 $CONFIG
-    CUR_GPU_MEM=$(get_config_var gpu_mem $CONFIG)
-    if [ -z "$CUR_GPU_MEM" ] || [ "$CUR_GPU_MEM" -lt 128 ]; then
-      set_config_var gpu_mem 128 $CONFIG
-    fi
-    sed $CONFIG -i -e "s/^startx/#startx/"
-    sed $CONFIG -i -e "s/^fixup_file/#fixup_file/"
   fi
 }
 
@@ -965,16 +953,45 @@ do_camera() {
     whiptail --msgbox "Your firmware appears to be out of date (no start_x.elf). Please update" 20 60 2
     return 1
   fi
+  # Stop if /boot is not a mountpoint
+  if ! mountpoint -q /boot; then
+    return 1
+  fi
+
+  DEFAULT=--defaultno
+  CURRENT=0
+  if [ $(get_camera) -eq 0 ] ; then
+      DEFAULT=
+      CURRENT=1
+  fi
+
+  [ -e $CONFIG ] || touch $CONFIG
+  sed $CONFIG -i -e "s/^startx/#startx/"
+  sed $CONFIG -i -e "s/^fixup_file/#fixup_file/"
   if [ "$INTERACTIVE" = True ]; then
-    whiptail --yesno "Enable support for Raspberry Pi camera?" 20 60 2 \
+    whiptail --yesno "Would you like the camera interface to be enabled?" $DEFAULT 20 60 2
-      --yes-button Disable --no-button Enable
     RET=$?
   else
     RET=$1
   fi
-  if [ $RET -eq 0 ] || [ $RET -eq 1 ]; then
+  if [ $RET -eq $CURRENT ]; then
     ASK_TO_REBOOT=1
-    set_camera $RET;
+  fi
+  if [ $RET -eq 1 ]; then
+    set_config_var start_x 0 $CONFIG
+    sed $CONFIG -i -e "s/^start_file/#start_file/"
+    if [ "$INTERACTIVE" = True ]; then
+      whiptail --msgbox "The camera interface is disabled" 20 60 1
+    fi
+  elif [ $RET -eq 0 ]; then
+    set_config_var start_x 1 $CONFIG
+    CUR_GPU_MEM=$(get_config_var gpu_mem $CONFIG)
+    if [ -z "$CUR_GPU_MEM" ] || [ "$CUR_GPU_MEM" -lt 128 ]; then
+      set_config_var gpu_mem 128 $CONFIG
+    fi
+    if [ "$INTERACTIVE" = True ]; then
+      whiptail --msgbox "The camera interface is enabled" 20 60 1
+    fi
   else
     return 1
   fi
@@ -988,15 +1005,25 @@ get_onewire() {
   fi
 }
 
-# $1 is 1 to disable interface, 0 to enable it
+do_onewire() {
-set_onewire() {
+  DEFAULT=--defaultno
+  CURRENT=0
+  if [ $(get_onewire) -eq 0 ]; then
+    DEFAULT=
+    CURRENT=1
+  fi
+
   [ -e $CONFIG ] || touch $CONFIG
-  if [ "$1" -eq 1 ]; then # disable driver
+  if [ "$INTERACTIVE" = True ]; then
-    sed $CONFIG -i -e "s/^dtoverlay=w1-gpio/#dtoverlay=w1-gpio/"
+    whiptail --yesno "Would you like the one-wire interface to be enabled?" $DEFAULT 20 60 2
-    if [ "$INTERACTIVE" = True ]; then
+    RET=$?
-      whiptail --msgbox "The one-wire interface is disabled" 20 60 1
+  else
-    fi
+    RET=$1
-  else # enable driver
+  fi
+  if [ $RET -eq $CURRENT ]; then
+    ASK_TO_REBOOT=1
+  fi
+  if [ $RET -eq 0 ]; then
     sed $CONFIG -i -e "s/^#dtoverlay=w1-gpio/dtoverlay=w1-gpio/"
     if ! grep -q -E "^dtoverlay=w1-gpio" $CONFIG; then
       printf "dtoverlay=w1-gpio\n" >> $CONFIG
@@ -1004,24 +1031,11 @@ set_onewire() {
     if [ "$INTERACTIVE" = True ]; then
       whiptail --msgbox "The one-wire interface is enabled" 20 60 1
     fi
-  fi
+  elif [ $RET -eq 1 ]; then
-}
+    sed $CONFIG -i -e "s/^dtoverlay=w1-gpio/#dtoverlay=w1-gpio/"
-
+    if [ "$INTERACTIVE" = True ]; then
-do_onewire() {
+      whiptail --msgbox "The one-wire interface is disabled" 20 60 1
-  DEFAULT=--defaultno
+    fi
-  if [ $(get_onewire) -eq 0 ]; then
-    DEFAULT=
-  fi
-
-  if [ "$INTERACTIVE" = True ]; then
-    whiptail --yesno "Would you like the one-wire interface to be enabled?" $DEFAULT 20 60 2
-    RET=$?
-  else
-    RET=$1
-  fi
-  if [ $RET -eq 0 ] || [ $RET -eq 1 ]; then
-    ASK_TO_REBOOT=1
-    set_onewire $RET;
   else
     return 1
   fi