• 👋 Hi, I’m @bstring23
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• 📫 How to train dolphins just ask me ... bstring+ #!/system/bin/sh

MODE=$1

log_print() { echo "($MODE) $1" echo "($MODE) $1" >> /dev/.launch_daemonsu.log log -p i -t launch_daemonsu "($MODE) $1" }

log_print "start"

if [ mount | grep " /data " >/dev/null 2>&1; echo $? -ne 0 ]; then

/data not mounted yet, we will be called again later

log_print "abort: /data not mounted #1" exit fi

if [ mount | grep " /data " | grep "tmpfs" >/dev/null 2>&1; echo $? -eq 0 ]; then

/data not mounted yet, we will be called again later

log_print "abort: /data not mounted #2" exit fi

if [ cat /proc/mounts | grep /su >/dev/null 2>&1; echo $? -eq 0 ]; then if [ -d "/su/bin" ]; then if [ ps | grep -v "launch_daemonsu.sh" | grep "daemonsu" >/dev/null 2>&1; echo $? -eq 0 ]; then # nothing to do here log_print "abort: daemonsu already running" exit fi fi fi

setprop sukernel.daemonsu.launch $MODE

loopsetup() { LOOPDEVICE= for DEV in $(ls /dev/block/loop*); do if [ losetup $DEV $1 >/dev/null 2>&1; echo $? -eq 0 ]; then LOOPDEVICE=$DEV break fi done

log_print "loopsetup($1): $LOOPDEVICE" }

resize() { local LAST= local SIZE= for i in ls -l /data/su.img; do if [ "$LAST" = "root" ]; then if [ "$i" != "root" ]; then SIZE=$i break; fi fi LAST=$i done log_print "/data/su.img: $SIZE bytes" if [ "$SIZE" -lt "96000000" ]; then log_print "resizing /data/su.img to 96M" e2fsck -p -f /data/su.img resize2fs /data/su.img 96M fi }

REBOOT=false

if [ ! -d "/su/bin" ]; then

not mounted yet, and doesn't exist already, merge

log_print "/su not mounted yet"

copy boot image backups

log_print "copying boot image backups from /cache to /data" cp -f /cache/stock_boot_* /data/. 2>/dev/null

if [ -f "/data/su.img" ]; then log_print "/data/su.img found" e2fsck -p -f /data/su.img

# make sure the image is the right size
resize

fi

newer image in /cache ?

only used if recovery couldn't mount /data

if [ -f "/cache/su.img" ]; then log_print "/cache/su.img found" e2fsck -p -f /cache/su.img OVERWRITE=true

if [ -f "/data/su.img" ]; then
  # attempt merge, this will fail pre-M
  # will probably also fail with /system installed busybox,
  # but then again, is there anything busybox doesn't break?
  # falls back to overwrite

  log_print "/data/su.img found"
  log_print "attempting merge"

  mkdir /cache/data_img
  mkdir /cache/cache_img

  # setup loop devices

  loopsetup /data/su.img
  LOOPDATA=$LOOPDEVICE
  log_print "$LOOPDATA /data/su.img"

  loopsetup /cache/su.img
  LOOPCACHE=$LOOPDEVICE
  log_print "$LOOPCACHE /cache/su.img"

  if [ ! -z "$LOOPDATA" ]; then
    if [ ! -z "$LOOPCACHE" ]; then
      # if loop devices have been setup, mount images
      OK=true

      if [ `mount -t ext4 -o rw,noatime $LOOPDATA /cache/data_img >/dev/null 2>&1; echo $?` -ne 0 ]; then
        OK=false
      fi

      if [ `mount -t ext4 -o rw,noatime $LOOPCACHE /cache/cache_img >/dev/null 2>&1; echo $?` -ne 0 ]; then
        OK=false
      fi

      if ($OK); then
        # if mounts have succeeded, merge the images
        if [ `cp -af /cache/cache_img/. /cache/data_img >/dev/null 2>&1; echo $?` -eq 0 ]; then
          log_print "merge complete"
          OVERWRITE=false
        fi
      fi

      umount /cache/data_img
      umount /cache/cache_img
    fi
  fi

  losetup -d $LOOPDATA
  losetup -d $LOOPCACHE

  rmdir /cache/data_img
  rmdir /cache/cache_img
fi

if ($OVERWRITE); then
  # no /data/su.img or merge failed, replace
  log_print "replacing /data/su.img with /cache/su.img"
  mv /cache/su.img /data/su.img

  # make sure the new image is the right size
  resize
fi

rm /cache/su.img

fi

if [ ! -f "/data/su.img" ]; then if [ -d "/.sufrp" ]; then # create empty image make_ext4fs -l 96M -a /su -S /.sufrp/file_contexts_image /data/su.img chown 0.0 /data/su.img chmod 0600 /data/su.img chcon u:object_r:system_data_file:s0 /data/su.img

  # make sure the new image is the right size
  resize
fi

fi fi

do we have an APK to install ?

if [ -f "/cache/SuperSU.apk" ]; then cp /cache/SuperSU.apk /data/SuperSU.apk rm /cache/SuperSU.apk fi if [ -f "/data/SuperSU.apk" ]; then log_print "installing SuperSU APK in /data"

APKPATH=eu.chainfire.supersu-1 for i in ls /data/app | grep eu.chainfire.supersu- | grep -v eu.chainfire.supersu.pro; do if [ cat /data/system/packages.xml | grep $i >/dev/null 2>&1; echo $? -eq 0 ]; then APKPATH=$i break; fi done rm -rf /data/app/eu.chainfire.supersu-*

log_print "target path: /data/app/$APKPATH"

mkdir /data/app/$APKPATH chown 1000.1000 /data/app/$APKPATH chmod 0755 /data/app/$APKPATH chcon u:object_r:apk_data_file:s0 /data/app/$APKPATH

cp /data/SuperSU.apk /data/app/$APKPATH/base.apk chown 1000.1000 /data/app/$APKPATH/base.apk chmod 0644 /data/app/$APKPATH/base.apk chcon u:object_r:apk_data_file:s0 /data/app/$APKPATH/base.apk

rm /data/SuperSU.apk

sync

just in case

REBOOT=true fi

sometimes we need to reboot, make it so

if ($REBOOT); then log_print "rebooting" if [ "$MODE" = "post-fs-data" ]; then # avoid device freeze (reason unknown) sh -c "sleep 5; reboot" & else reboot fi exit fi

if [ ! -d "/su/bin" ]; then

not mounted yet, and doesn't exist already, mount

fix permissions

chown 0.0 /data/su.img chmod 0600 /data/su.img chcon u:object_r:system_data_file:s0 /data/su.img

losetup is unreliable pre-M

if [ cat /proc/mounts | grep /su >/dev/null 2>&1; echo $? -ne 0 ]; then loopsetup /data/su.img if [ ! -z "$LOOPDEVICE" ]; then MOUNT=$(mount -t ext4 -o rw,noatime $LOOPDEVICE /su 2>&1) log_print "$MOUNT" fi fi

trigger mount, should also work pre-M, but on post-fs-data trigger may

be processed only after this script runs, causing a fallback to service launch

if [ cat /proc/mounts | grep /su >/dev/null 2>&1; echo $? -ne 0 ]; then setprop sukernel.mount 1 sleep 1 fi

exit if all mount attempts have failed, script is likely to be called again

if [ cat /proc/mounts | grep /su >/dev/null 2>&1; echo $? -ne 0 ]; then log_print "abort: mount failed" exit fi fi

if [ ! -d "/su/bin" ]; then

empty image

if [ -d "/.sufrp" ]; then /.sufrp/frp_install fi fi

if other su binaries exist, route them to ours

mount -o bind /su/bin/su /sbin/su 2>/dev/null mount -o bind /su/bin/su /system/bin/su 2>/dev/null mount -o bind /su/bin/su /system/xbin/su 2>/dev/null

poor man's overlay on /system/xbin

if [ -d "/su/xbin_bind" ]; then cp -f -a /system/xbin/. /su/xbin_bind rm -rf /su/xbin_bind/su ln -s /su/bin/su /su/xbin_bind/su mount -o bind /su/xbin_bind /system/xbin fi

start daemon

if [ "$MODE" != "post-fs-data" ]; then

if launched by service, replace this process (exec)

log_print "exec daemonsu" exec /su/bin/daemonsu --auto-daemon else

if launched by exec, fork (non-exec) and wait for su.d to complete executing

log_print "fork daemonsu" /su/bin/daemonsu --auto-daemon

wait for a while for su.d to complete

if [ -d "/su/su.d" ]; then log_print "waiting for su.d" for i in 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16; do # su.d finished ? if [ -f "/dev/.su.d.complete" ]; then break fi

  for j in 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16; do
    # su.d finished ?
    if [ -f "/dev/.su.d.complete" ]; then
      break
    fi

    # sleep 240ms if usleep supported, warm up the CPU if not
    # 16*16*240ms=60s maximum if usleep supported, else much shorter
    usleep 240000
  done
done

fi log_print "end" fi