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|
#!/usr/bin/env bash
set -euo pipefail
# Test that src and dest trees are as identical as bup is capable of
# making them. For now, use rsync -niaHAX ...
usage() {
cat <<EOF
Usage:
compare-trees [-c] [-x] [--] SOURCE DEST
compare-trees --features
compare-trees -h
OPTIONS:
-h
Display help
-c
Check file content (default)
-x
Don't check file content (rely on size/timestamps, etc.)
--times
--no-times
Check or don't check timestamps (checking is the default)
--features
Show enabled features
--
Don't treat following arguments as options (e.g. compare-trees -- -c dest)
EOF
}
show_features=''
verify_content=" --checksum"
verify_times=' --times'
case "$#/${1:-}" in
1/-h) usage; exit 0;;
1/--features) show_features=yes; shift;;
*)
while test $# -gt 0; do
case "$1" in
-h|--features) usage 1>&2; exit 2;;
-c) verify_content=" --checksum"; shift;;
-x) verify_content=""; shift;;
--times) verify_times=' --times'; shift;;
--no-times) verify_times=''; shift;;
--) shift; break;;
[^-]*) break;;
esac
done
esac
if test $# -ne 2 -a -z "$show_features"; then
usage 1>&2
exit 2
fi
src="${1:-}"
dest="${2:-}"
rsync_opts="-rlpgoD" # --archive, without --times
rsync_opts="$rsync_opts -niH --delete"
rsync_opts="$rsync_opts$verify_content"
rsync_opts="$rsync_opts$verify_times"
comparing_acls=''
rsync_version=$(rsync --version)
if [[ ! "$rsync_version" =~ "ACLs" ]] || [[ "$rsync_version" =~ "no ACLs" ]]; then
echo "Not comparing ACLs (not supported by available rsync)" 1>&2
else
case "$OSTYPE" in
cygwin|darwin|netbsd)
echo "Not comparing ACLs (not yet supported on $OSTYPE)" 1>&2
;;
*)
comparing_acls=yes
rsync_opts="$rsync_opts -A"
;;
esac
fi
xattrs_available=''
if [[ ! "$rsync_version" =~ "xattrs" ]] || [[ "$rsync_version" =~ "no xattrs" ]]; then
echo "Not comparing xattrs (not supported by available rsync)" 1>&2
else
xattrs_available=yes
fi
if test "$show_features"; then
echo "POSIX ACLs: ${comparing_acls:-no}"
echo "Extended attributes (xattrs): ${xattrs_available:-no}"
fi
if test "$show_features"; then
exit 0
fi
tmpfile="$(mktemp /tmp/bup-test-XXXXXXX)" || exit $?
trap "rm -rf '$tmpfile'" EXIT || exit $?
# Even in dry-run mode, rsync may fail if -X is specified and the
# filesystems don't support xattrs.
if test "$xattrs_available"; then
rsync $rsync_opts -X "$src" "$dest" > "$tmpfile"
if test $? -ne 0; then
# Try again without -X
rsync $rsync_opts "$src" "$dest" > "$tmpfile" || exit $?
fi
else
rsync $rsync_opts "$src" "$dest" > "$tmpfile" || exit $?
fi
if test $(wc -l < "$tmpfile") != 0; then
echo "Differences between $src and $dest" 1>&2
cat "$tmpfile"
exit 1
fi
exit 0
|
