42 lines
1.4 KiB
Bash
Executable File
42 lines
1.4 KiB
Bash
Executable File
#! /bin/sh -e
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#
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# Copyright 2019 The Kubernetes Authors.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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# This script verifies that the content of a directory managed
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# by "git subtree" has not been modified locally. It does that
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# by looking for commits that modify the files with the
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# subtree prefix (aka directory) while ignoring merge
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# commits. Merge commits are where "git subtree" pulls the
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# upstream files into the directory.
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#
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# Theoretically a developer can subvert this check by modifying files
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# in a merge commit, but in practice that shouldn't happen.
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DIR="$1"
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if [ ! "$DIR" ]; then
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echo "usage: $0 <directory>" >&2
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exit 1
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fi
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REV=$(git log -n1 --format=format:%H --no-merges -- "$DIR")
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if [ "$REV" ]; then
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echo "Directory '$DIR' contains non-upstream changes:"
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echo
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git log --no-merges -- "$DIR"
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exit 1
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else
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echo "$DIR is a clean copy of upstream."
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fi
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