Merge "Revert "Revert "Automated NDK API coverage used by Mainline modules build integration."""

scripts/gen_ndk_backedby_apex.sh

@@ -0,0 +1,55 @@
+#!/bin/bash -e
+
+# Copyright 2020 Google Inc. All rights reserved.
+#
+# 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.
+
+# Generates NDK API txt file used by Mainline modules. NDK APIs would have value
+# "UND" in Ndx column and have suffix "@LIB_NAME" in Name column.
+# For example, current line llvm-readelf output is:
+# 1: 00000000     0     FUNC      GLOBAL  DEFAULT   UND   dlopen@LIBC
+# After the parse function below "dlopen" would be write to the output file.
+printHelp() {
+    echo "**************************** Usage Instructions ****************************"
+    echo "This script is used to generate the Mainline modules backed-by NDK symbols."
+    echo ""
+    echo "To run this script use: ./ndk_backedby_module.sh \$BINARY_IMAGE_DIRECTORY \$OUTPUT_FILE_PATH \$NDK_LIB_NAME_LIST"
+    echo "For example: If all the module image files that you would like to run is under directory '/myModule' and output write to /backedby.txt then the command would be:"
+    echo "./ndk_usedby_module.sh /myModule /backedby.txt /ndkLibList.txt"
+    echo "If the module1 is backing lib1 then the backedby.txt would contains: "
+    echo "lib1"
+}
+
+genBackedByList() {
+  dir="$1"
+  [[ ! -e "$2" ]] && echo "" >> "$2"
+  while IFS= read -r line
+  do
+    soFileName=$(echo "$line" | sed 's/\(.*so\).*/\1/')
+    if [[ ! -z "$soFileName" && "$soFileName" != *"#"* ]]
+    then
+      find "$dir" -type f -name "$soFileName" -exec echo "$soFileName" >> "$2" \;
+    fi
+  done < "$3"
+}
+
+if [[ "$1" == "help" ]]
+then
+  printHelp
+elif [[ "$#" -ne 3 ]]
+then
+  echo "Wrong argument length. Expecting 3 argument representing image file directory, output path, path to ndk library list."
+else
+  [[ -e "$2" ]] && rm "$2"
+  genBackedByList "$1" "$2" "$3"
+fi