Off-computer updater/flasher for A-only without recovery
How to use: - Push UNSPARSED system.img to /sdcard - Create file /cache/phh/flash - Create block.map: $ uncrypt /data/media/0/system.img /cache/phh/block.map - Reboot This is done by copying /system to a tmpfs, then killing all services, moving /system to /dev/old-system, unmounting it, then applying uncrypt's block.map Tested devices as of today: - Blackview A20 - Huawei Mate 9
This commit is contained in:
Pierre-Hugues Husson
parent
aea7c39d02
commit
9c37ec0bcd
5
base.mk
5
base.mk
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@ -66,3 +66,8 @@ PRODUCT_PACKAGES += \
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PRODUCT_PACKAGES += \
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bootctl \
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vintf
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PRODUCT_COPY_FILES += \
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device/phh/treble/twrp/twrp.rc:system/etc/init/twrp.rc \
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device/phh/treble/twrp/twrp.sh:system/bin/twrp.sh \
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device/phh/treble/twrp/buysbox-armv7l:system/bin/busybox_phh
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@ -0,0 +1,4 @@
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on post-fs
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exec - root -- /system/bin/vndk-detect
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export LD_CONFIG_FILE /system/etc/ld.config.${persist.sys.vndk}.txt
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exec u:r:phhsu_daemon:s0 root -- /system/bin/twrp.sh
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@ -0,0 +1,142 @@
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#!/system/bin/sh
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if [ -z "$cache_log" ];then
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if [ -f /cache/phh/flash ];then
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rm -f /cache/phh/flash
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else
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exit 0
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fi
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cache_log=1 exec /system/bin/sh -x "$0" > /cache/phh/logs 2>&1
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fi
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#init.rc hooks are based on "0" (non-configfs) or "1" (configfs), so set it to 2 so that noone is triggered
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if [ -z "$nosystem" ];then
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configfs="$(getprop sys.usb.configfs)"
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export configfs
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setprop sys.usb.configfs 2
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setprop service.adb.tcp.port 5555
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mount -o private,recursive rootfs /
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mkdir /dev/new-system/
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chmod 0755 /dev/new-system
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mkdir /dev/old-system
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cp -R --preserve=all /system/lib64 /dev/new-system/lib64
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cp -R --preserve=all /system/lib /dev/new-system/lib
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cp -R --preserve=all /system/bin /dev/new-system/bin
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cp -R --preserve=all /system/xbin /dev/new-system/xbin
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cp -R --preserve=all /system/etc /dev/new-system/etc
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getprop | \
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grep -e restarting -e running | \
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sed -nE -e 's/\[([^]]*).*/\1/g' -e 's/init.svc.(.*)/\1/p' |
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while read svc ;do
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setprop ctl.stop $svc
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done
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setenforce 0
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umount /sbin/adbd
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mount -o move /system /dev/old-system
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/dev/new-system/bin/busybox_phh mount -o bind /dev/new-system /system
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nosystem=1 exec /system/bin/sh -x "$0"
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fi
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umount /dev/old-system
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setprop service.adb.root 1
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if [ "$configfs" == 1 ];then
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mount -t configfs none /config
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rm -Rf /config/usb_gadget
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mkdir -p /config/usb_gadget/g1
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echo 0x12d1 > /config/usb_gadget/g1/idVendor
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echo 0x103A > /config/usb_gadget/g1/idProduct
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mkdir -p /config/usb_gadget/g1/strings/0x409
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echo phh > /config/usb_gadget/g1/strings/0x409/serialnumber
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echo phh > /config/usb_gadget/g1/strings/0x409/manufacturer
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echo phh > /config/usb_gadget/g1/strings/0x409/product
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mkdir /config/usb_gadget/g1/functions/ffs.adb
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mkdir /config/usb_gadget/g1/functions/mtp.gs0
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mkdir /config/usb_gadget/g1/functions/ptp.gs1
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mkdir /config/usb_gadget/g1/configs/c.1/
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mkdir /config/usb_gadget/g1/configs/c.1/strings/0x409
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echo 'ADB MTP' > /config/usb_gadget/g1/configs/c.1/strings/0x409/configuration
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mkdir /dev/usb-ffs
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chmod 0770 /dev/usb-ffs
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chown shell:shell /dev/usb-ffs
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mkdir /dev/usb-ffs/adb/
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chmod 0770 /dev/usb-ffs/adb
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chown shell:shell /dev/usb-ffs/adb
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mount -t functionfs -o uid=2000,gid=2000 adb /dev/usb-ffs/adb
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/dev/new-system/bin/adbd &
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sleep 1
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echo none > /config/usb_gadget/g1/UDC
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ln -s /config/usb_gadget/g1/functions/ffs.adb /config/usb_gadget/g1/configs/c.1/f1
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echo ff100000.dwc3 > /config/usb_gadget/g1/UDC
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sleep 2
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echo 2 > /sys/devices/virtual/android_usb/android0/port_mode
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else
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mkdir /dev/usb-ffs
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chmod 0770 /dev/usb-ffs
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chown shell:shell /dev/usb-ffs
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mkdir /dev/usb-ffs/adb/
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chmod 0770 /dev/usb-ffs/adb
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chown shell:shell /dev/usb-ffs/adb
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mount -t functionfs -o uid=2000,gid=2000 adb /dev/usb-ffs/adb
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echo adb > /sys/class/android_usb/android0/f_ffs/aliases
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setprop sys.usb.config adb
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echo 0 > /sys/class/android_usb/android0/enable
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echo 18d1 > /sys/class/android_usb/android0/idVendor
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echo 4EE7 > /sys/class/android_usb/android0/idProduct 4EE7
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echo adb > /sys/class/android_usb/android0/functions
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getprop ro.boot.serialno |tr -d '\n' |cat > /sys/class/android_usb/android0/iSerial
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echo phh > /sys/class/android_usb/android0/iManufacturer
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echo phh > /sys/class/android_usb/android0/iProduct
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echo 1 > /sys/class/android_usb/android0/enable
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/dev/new-system/bin/adbd &
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fi
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death() {
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sleep 180
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reboot
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}
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dev="$(sed -n 1p /cache/phh/block.map)"
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devbase="$(echo $dev | sed -nE 's;(/dev/block/.*/)userdata;\1;p')"
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[ -z "$devbase" ] && devbase="$(echo $dev | sed -nE 's;(/dev/block/.*/)data;\1;p')"
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for i in system system_a;do
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v="$devbase/$i"
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[ -b "$v" ] && system="$v"
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done
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#Failed...
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[ -z "$system" ] && death
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blockdev --setrw "$system"
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size="$(sed -En '2s/^([0-9]+) .*/\1/p' /cache/phh/block.map)"
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block_size="$(sed -En '2s/.* ([0-9]*)$/\1/p' /cache/phh/block.map)"
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n_ranges="$(sed -n 3p /cache/phh/block.map)"
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block_id=0
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for i in $(seq 1 $n_ranges);do
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range_start="$(sed -En $((i+3))'s/^([0-9]+) .*/\1/p' /cache/phh/block.map)"
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range_end="$(sed -En $((i+3))'s/^.* ([0-9]+)$/\1/p' /cache/phh/block.map)"
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n_blocks=$((range_end-range_start))
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busybox_phh dd bs=$block_size skip=$range_start seek=$block_id count=$n_blocks if=$dev of=$system
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block_id=$((block_id+n_blocks))
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done
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sync
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reboot
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