Flashable ZIP to enable the soft task bar

Initial commit

.gitignore

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+lin18.1-GTS210TB*

create-zip.sh

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+#!/bin/bash
+
+rm lin18.1-GTS210TB*
+
+cd install
+zip -r ../lin18.1-GTS210TB_install_V0.01.zip *
+cd ..
+

install/META-INF/com/google/android/updater-script

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+ui_print("Enabling soft task bar...");
+ifelse(is_mounted("/system"), unmount("/system"));
+ifelse(is_mounted("/system_root"), unmount("/system_root"));
+package_extract_file("mount-system.sh", "/tmp/mount-system.sh");
+package_extract_file("unmount-system.sh", "/tmp/unmount-system.sh");
+package_extract_file("sys-sys.sh", "/tmp/sys-sys.sh");
+package_extract_file("sys-root.sh", "/tmp/sys-root.sh");
+package_extract_file("update-prop.sh", "/tmp/update-prop.sh");
+set_metadata("/tmp/mount-system.sh", "uid", 0, "gid", 0, "mode", 0755);
+set_metadata("/tmp/unmount-system.sh", "uid", 0, "gid", 0, "mode", 0755);
+set_metadata("/tmp/sys-sys.sh", "uid", 0, "gid", 0, "mode", 0755);
+set_metadata("/tmp/sys-root.sh", "uid", 0, "gid", 0, "mode", 0755);
+set_metadata("/tmp/update-prop.sh", "uid", 0, "gid", 0, "mode", 0755);
+run_program("/tmp/mount-system.sh") == 0 || abort("Could not mount /system");
+
+if run_program("/tmp/sys-root.sh") != 0 then
+  if run_program("/tmp/sys-sys.sh") == 0 then
+    package_extract_dir("system", "/system/system");
+    set_metadata("/system/system/addon.d/63-tbprop.sh", "uid", 0, "gid", 0, "mode", 0644, "selabel", "u:object_r:system_file:s0");
+  else
+    package_extract_dir("system", "/system");
+    set_metadata("/system/addon.d/63-tbprop.sh", "uid", 0, "gid", 0, "mode", 0644, "selabel", "u:object_r:system_file:s0");
+  endif;
+else
+  package_extract_dir("system", "/system_root/system");
+  set_metadata("/system_root/system/addon.d/63-tbprop.sh", "uid", 0, "gid", 0, "mode", 0644, "selabel", "u:object_r:system_file:s0");
+endif;
+
+run_program("/tmp/update-prop.sh") == 0 || ui_print("Could not update build.prop");
+run_program("/tmp/unmount-system.sh") == 0 || ui_print("Could not unmount /system");
+ui_print("Done");
+set_progress(1.000000);

install/mount-system.sh

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+#!/sbin/sh
+
+# Modern devices use /system as root ("/")
+# TWRP 3.6.x sometimes also uses /system_root,
+# even if property not present
+system_as_root=`getprop ro.build.system_root_image`
+if [ "$system_as_root" == "true" ] || [ -d "/system_root" ]; then
+  if mount -o rw /system_root; then
+    exit 0
+  fi
+
+  active_slot=`getprop ro.boot.slot_suffix`
+  if [ ! -z "$active_slot" ]; then
+    block=/dev/block/bootdevice/by-name/system$active_slot
+  else
+    block=/dev/block/bootdevice/by-name/system
+  fi
+  mkdir -p /system_root
+  if mount -o rw $block /system_root ||
+     mount -o rw $block /system_root -t ext4 ||
+     mount -o rw $block /system_root -t f2fs; then
+    exit 0
+  fi
+else
+  if mount /system; then
+    exit 0
+  fi
+
+  # Try to get the block from /etc/recovery.fstab
+  block=`cat /etc/recovery.fstab | cut -d '#' -f 1 | grep /system | grep -o '/dev/[^ ]*' | head -1`
+  if [ -n "$block" ] && mount $block /system; then
+    exit 0
+  fi
+fi
+
+exit 1

install/sys-root.sh

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+#!/sbin/sh
+
+#
+# Depending on the recovery (e.g. TWRP 3.6.x on some devices),
+# the /system_root partition may be used, even if the property
+# is not present - so we need to use this script
+# to find out about that
+#
+system_as_root=`getprop ro.build.system_root_image`
+if [ "$system_as_root" == "true" ] || [ -d "/system_root" ]; then
+  exit 0
+else
+  exit 1
+fi

install/sys-sys.sh

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+#!/sbin/sh
+
+#
+# Depending on the recovery, the /system partition may
+# be mounted under /system/system - so we need to use this script
+# to find out about that
+#
+if [ -d /system/system ]; then
+  exit 0
+else
+  exit 1
+fi

install/system/addon.d/63-tbprop.sh

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+#!/sbin/sh
+#
+# ADDOND_VERSION=2
+#
+
+. /tmp/backuptool.functions
+
+case "$1" in
+  backup)
+    # Stub
+  ;;
+  restore)
+    matching=$(grep "qemu.hw.mainkeys" $S/build.prop)
+    if [ -z $matching ]; then
+      echo " " >> $S/build.prop
+      echo "# Enable Taskbar" >> $S/build.prop
+      echo "qemu.hw.mainkeys=0" >> $S/build.prop
+    fi
+  ;;
+  pre-backup)
+    # Stub
+  ;;
+  post-backup)
+    # Stub
+  ;;
+  pre-restore)
+    # Stub
+  ;;
+  post-restore)
+    # Stub
+  ;;
+esac

install/unmount-system.sh

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+#!/sbin/sh
+
+# Modern devices use /system as root ("/")
+# TWRP 3.6.x sometimes also uses /system_root,
+# even if property not present
+system_as_root=`getprop ro.build.system_root_image`
+if [ "$system_as_root" == "true" ] || [ -d "/system_root" ]; then
+  if umount /system_root; then
+    exit 0
+  fi
+else
+  if umount /system; then
+    exit 0
+  fi
+fi
+
+exit 1

install/update-prop.sh

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+#!/sbin/sh
+
+#
+# Depending on the recovery, the /system partition may
+# be mounted under /system/system - so we need to use this script
+# to find out about that
+#
+if [ -d /system/system ]; then
+  PROP_FILE="/system/system/build.prop"
+elif [ -d /system_root ]; then
+  PROP_FILE="/system_root/system/build.prop"
+else
+  PROP_FILE="/system/build.prop"
+fi
+
+matching=$(grep "qemu.hw.mainkeys" "$PROP_FILE")
+if [ -z $matching ]; then
+  echo " " >> "$PROP_FILE"
+  echo "# Enable Taskbar" >> "$PROP_FILE"
+  echo "qemu.hw.mainkeys=0" >> "$PROP_FILE"
+fi