#!/usr/bin/env bash

set -euo pipefail

pid="$1"
target_soname="$2"

echo "pid: $pid"
echo "soname: $target_soname"

lines=()

IFS='
'
for line in $(cat /proc/$pid/maps); do
   region=${line%% *}
   region_file=/proc/$pid/map_files/$region
   if [[ -e $region_file ]]; then
      soname=$(objdump -p "$region_file" 2>/dev/null | grep SONAME ||:)
      if [[ $(echo "$soname" | awk '{print $2}') == $target_soname ]]; then
         lines+=($line)
      fi
   fi
done

rm "$target_soname" 2>/dev/null ||:
for line in ${lines[@]}; do
   cat /proc/$pid/map_files/$(echo "$line" | awk '{print $1}') >> $target_soname
done