Add preloads_copy script

Copied from device/google/crosshatch, to serve as the canonical
location for this script to be shared between devices.

Bug: 80508492
Test: make
Change-Id: I567c785af0a690fbbba3df0553922735b96f7390

1 files changed, 38 insertions, 0 deletions

diff --git a/cppreopts/preloads_copy.sh b/cppreopts/preloads_copy.sh
new file mode 100644
index 00000000..7e5e8e4a
--- /dev/null
+++ b/cppreopts/preloads_copy.sh
@@ -0,0 +1,38 @@
+#!/system/bin/sh
+#
+# Copyright (C) 2016 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# This script copies preloaded content from system_b to data partition
+
+# create files with 644 (global read) permissions.
+umask 022
+
+if [ $# -eq 1 ]; then
+  # Where the system_b is mounted that contains the preloads dir
+  mountpoint=$1
+  dest_dir=/data/preloads
+  log -p i -t preloads_copy "Copying from $mountpoint/preloads"
+  # Parallelize by copying subfolders and files in the background
+  for file in $(find ${mountpoint}/preloads -mindepth 1 -maxdepth 1); do
+      cp -rn $file $dest_dir &
+  done
+  # Wait for jobs to finish
+  wait
+  log -p i -t preloads_copy "Copying complete"
+  exit 0
+else
+  log -p e -t preloads_copy "Usage: preloads_copy.sh <system_other-mount-point>"
+  exit 1
+fi