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#!/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: ./gen_ndk_backed_by_apex.sh \$OUTPUT_FILE_PATH \$NDK_LIB_NAME_LIST \$MODULE_LIB1 \$MODULE_LIB2..."
echo "For example: If output write to /backedby.txt then the command would be:"
echo "./gen_ndk_backed_by_apex.sh /backedby.txt /ndkLibList.txt lib1.so lib2.so"
echo "If the module1 is backing lib1 then the backedby.txt would contains: "
echo "lib1"
}
contains() {
val="$1"
shift
for x in "$@"; do
if [ "$x" = "$val" ]; then
return 0
fi
done
return 1
}
genBackedByList() {
out="$1"
shift
ndk_list="$1"
shift
rm -f "$out"
touch "$out"
while IFS= read -r line
do
soFileName=$(echo "$line" | sed 's/\(.*so\).*/\1/')
if [[ ! -z "$soFileName" && "$soFileName" != *"#"* ]]
then
if contains "$soFileName" "$@"; then
echo "$soFileName" >> "$out"
fi
fi
done < "$ndk_list"
}
if [[ "$1" == "help" ]]
then
printHelp
elif [[ "$#" -lt 2 ]]
then
echo "Wrong argument length. Expecting at least 2 argument representing output path, path to ndk library list, followed by a list of libraries in the Mainline module."
else
genBackedByList "$@"
fi