mbedtls/tests/scripts/check-generated-files.sh
Gilles Peskine b5c4382bef check-generated-files.sh -u: don't update file timestamps
When running check-generated-files in update mode, all generated files were
regenerated. As a consequence,
```
tests/scripts/check-generated-files.sh -u && make
```
always caused most of the code to be rebuilt. Now, if a file hasn't changed,
preserve its original modification time (and other metadata), so the command
above doesn't rebuild anything that has actually not changed.

Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
2022-04-05 15:19:16 +02:00

111 lines
3.3 KiB
Bash
Executable File

#! /usr/bin/env sh
# Copyright The Mbed TLS Contributors
# SPDX-License-Identifier: Apache-2.0
#
# 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.
#
# Purpose
#
# Check if generated files are up-to-date.
set -eu
if [ $# -ne 0 ] && [ "$1" = "--help" ]; then
cat <<EOF
$0 [-u]
This script checks that all generated file are up-to-date. If some aren't, by
default the scripts reports it and exits in error; with the -u option, it just
updates them instead.
-u Update the files rather than return an error for out-of-date files.
EOF
exit
fi
if [ -d library -a -d include -a -d tests ]; then :; else
echo "Must be run from mbed TLS root" >&2
exit 1
fi
UPDATE=
if [ $# -ne 0 ] && [ "$1" = "-u" ]; then
shift
UPDATE='y'
fi
# check SCRIPT FILENAME[...]
# check SCRIPT DIRECTORY
# Run SCRIPT and check that it does not modify any of the specified files.
# In the first form, there can be any number of FILENAMEs, which must be
# regular files.
# In the second form, there must be a single DIRECTORY, standing for the
# list of files in the directory. Running SCRIPT must not modify any file
# in the directory and must not add or remove files either.
# If $UPDATE is empty, abort with an error status if a file is modified.
check()
{
SCRIPT=$1
shift
directory=
if [ -d "$1" ]; then
directory="$1"
set -- "$1"/*
fi
for FILE in "$@"; do
cp -p "$FILE" "$FILE.bak"
done
"$SCRIPT"
# Compare the script output to the old files and remove backups
for FILE in "$@"; do
if diff "$FILE" "$FILE.bak" >/dev/null 2>&1; then
# Move the original file back so that $FILE's timestamp doesn't
# change (avoids spurious rebuilds with make).
mv "$FILE.bak" "$FILE"
else
echo "'$FILE' was either modified or deleted by '$SCRIPT'"
if [ -z "$UPDATE" ]; then
exit 1
else
rm "$FILE.bak"
fi
fi
done
if [ -n "$directory" ]; then
old_list="$*"
set -- "$directory"/*
new_list="$*"
# Check if there are any new files
if [ "$old_list" != "$new_list" ]; then
echo "Files were deleted or created by '$SCRIPT'"
echo "Before: $old_list"
echo "After: $new_list"
if [ -z "$UPDATE" ]; then
exit 1
fi
fi
fi
}
check scripts/generate_errors.pl library/error.c
check scripts/generate_query_config.pl programs/test/query_config.c
check scripts/generate_features.pl library/version_features.c
check scripts/generate_visualc_files.pl visualc/VS2010
check scripts/generate_psa_constants.py programs/psa/psa_constant_names_generated.c
check tests/scripts/generate_psa_tests.py $(tests/scripts/generate_psa_tests.py --list)