#!/bin/sh
set -eu

src=/var/lib/systemd/pstore
dst=/var/log/pstore

mkdir -p "$dst"
chmod 0750 "$dst"

found=0
if [ -d "$src" ]; then
    for source_file in "$src"/*; do
        [ -f "$source_file" ] || continue
        found=1
        base=$(basename "$source_file")
        digest=$(sha256sum "$source_file" | awk '{print substr($1, 1, 16)}')
        target="$dst/$digest-$base"
        if [ ! -e "$target" ]; then
            cp -a "$source_file" "$target"
            chmod 0640 "$target" 2>/dev/null || true
        fi
    done
fi

if [ "$found" -eq 1 ]; then
    logger -t control-pstore-collect "archived systemd pstore files in $dst"
fi