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update-binary: Add support for system-as-root devices for the zip

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* We'll first check the currently loaded slot. We can
  assume the user just flashed a rom and that the target
  slot for this rom is the other slot, so mount that
  system image. TODO: autodetect this somehow

* Mount this system partition at /system_root (rw) and then
  mount the /system/system folder at /system. We do it
  this way for a couple reasons. Because it makes the
  script easier to work with and because we're using
  toybox from the system partition for operations, which
  is expecting /system/bin/linker64 to exist.

Change-Id: Ia6f96f0864d725b0123665bbbce0e31523bb834f
This commit is contained in:
Dan Pasanen 2018-03-17 05:54:56 -05:00
parent 5c767201f0
commit 12914fac70
1 changed files with 37 additions and 21 deletions
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58
build/meta/com/google/android/update-binary
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@ -29,38 +29,50 @@ ui_print "**********************"
ui_print "MindTheGapps installer"
ui_print "**********************"
ABDEVICE=`getprop ro.build.system_root_image`
SYSTEMASROOT=`getprop ro.build.system_root_image`
ui_print "Mounting system partition"
if [ "$ABDEVICE" == "true" ]; then
SYSTEM="/system/system"
# TODO: Actually handle A/B ota devices
ui_print "A/B OTA device detected! This is unsupported. Aborting"
exit 1
else
SYSTEM="/system"
if mount $SYSTEM; then
ui_print "$SYSTEM mounted"
if [ "$SYSTEMASROOT" == "true" ]; then
CURRENTSLOT=`getprop ro.boot.slot_suffix`
if [ ! -z "$CURRENTSLOT" ]; then
if [ "$CURRENTSLOT" == "_a" ]; then
TARGETSYSTEM=/dev/block/bootdevice/by-name/system_b
else
TARGETSYSTEM=/dev/block/bootdevice/by-name/system_a
fi
else
ui_print "Could not mount $SYSTEM! Aborting"
exit 1
TARGETSYSTEM=/dev/block/bootdevice/by-name/system
fi
mkdir -p /system_root
if mount -o rw $TARGETSYSTEM /system_root && mount /system_root/system /system; then
ui_print "/system mounted"
else
ui_print "Could not mount /system! Aborting"
exit 1
fi
else
if mount /system; then
ui_print "/system mounted"
else
ui_print "Could not mount /system! Aborting"
exit 1
fi
fi
if [ -f $SYSTEM/bin/toybox ]; then
UTILS=$SYSTEM/bin/toybox
LD_PATH=$SYSTEM/lib
if [ -f /system/bin/toybox ]; then
UTILS=/system/bin/toybox
LD_PATH=/system/lib
else
ui_print "Could not find $SYSTEM/bin/toybox! Aborting"
ui_print "Could not find /system/bin/toybox! Aborting"
exit 1
fi
DIRS="addon.d app priv-app framework etc lib"
if [ -d $SYSTEM/lib64 ]; then
if [ -d /system/lib64 ]; then
DIRS="$DIRS lib64"
LD_PATH=$SYSTEM/lib64
LD_PATH=/system/lib64
fi
LOWMEM=1572864
@ -103,14 +115,18 @@ for dirs in $DIRS; do
done
done
ui_print "Copying files"
exec_util "cp --preserve=a -r ./* $SYSTEM/"
exec_util "rm -rf $SYSTEM/priv-app/Provision/"
exec_util "cp --preserve=a -r ./* /system/"
exec_util "rm -rf /system/priv-app/Provision/"
ui_print "Cleaning up files"
cd ../
exec_util "rm -rf system/"
ui_print "Unmounting system partition"
umount $SYSTEM
if umount /system; then
if [ "$SYSTEMASROOT" == "true" ]; then
umount /system_root
fi
fi
ui_print "Done!"
exit 0