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6e4e98ee8c
487aff421Check subtree consistency in Travis (Pieter Wuille)e1d0cc23aImprove git-subtree-check.sh (Pieter Wuille) Pull request description: Apparently many of our subtrees get modified by PRs in this repository, without getting noticed. To improve upon this: * Make git-subtree-check.sh capable of doing a weaker consistency check (that doesn't need access to external repositories), but which should be sufficient to detect unintended changes. It can be fooled by a fake subtree merge commit, but that would hopefully be obvious to reviewers. * Make Travis invoke this subtree check for each of our subtrees. Note that Travis is currently expected to fail on this PR, as 2 out of 4 subtrees (`src/secp156k1` and `src/univalue` have been modified directly in master). Tree-SHA512: 465b680392d3daf38a8c1dda77d6f74b1d1c23324c378774777fb95aa673e119a8f7e3ccc124e41d97b5ac8975f3d79f3015797d2d309666582394364917ec4e
95 lines
2.4 KiB
Bash
Executable File
95 lines
2.4 KiB
Bash
Executable File
#!/bin/sh
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# Copyright (c) 2015 The Bitcoin Core developers
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# Distributed under the MIT software license, see the accompanying
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# file COPYING or http://www.opensource.org/licenses/mit-license.php.
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DIR="$1"
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COMMIT="$2"
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if [ -z "$COMMIT" ]; then
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COMMIT=HEAD
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fi
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# Taken from git-subtree (Copyright (C) 2009 Avery Pennarun <apenwarr@gmail.com>)
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find_latest_squash()
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{
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dir="$1"
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sq=
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main=
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sub=
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git log --grep="^git-subtree-dir: $dir/*\$" \
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--pretty=format:'START %H%n%s%n%n%b%nEND%n' "$COMMIT" |
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while read a b _; do
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case "$a" in
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START) sq="$b" ;;
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git-subtree-mainline:) main="$b" ;;
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git-subtree-split:) sub="$b" ;;
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END)
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if [ -n "$sub" ]; then
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if [ -n "$main" ]; then
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# a rejoin commit?
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# Pretend its sub was a squash.
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sq="$sub"
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fi
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echo "$sq" "$sub"
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break
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fi
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sq=
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main=
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sub=
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;;
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esac
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done
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}
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# find latest subtree update
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latest_squash="$(find_latest_squash "$DIR")"
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if [ -z "$latest_squash" ]; then
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echo "ERROR: $DIR is not a subtree" >&2
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exit 2
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fi
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set $latest_squash
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old=$1
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rev=$2
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# get the tree in the current commit
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tree_actual=$(git ls-tree -d "$COMMIT" "$DIR" | head -n 1)
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if [ -z "$tree_actual" ]; then
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echo "FAIL: subtree directory $DIR not found in $COMMIT" >&2
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exit 1
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fi
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set $tree_actual
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tree_actual_type=$2
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tree_actual_tree=$3
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echo "$DIR in $COMMIT currently refers to $tree_actual_type $tree_actual_tree"
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if [ "d$tree_actual_type" != "dtree" ]; then
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echo "FAIL: subtree directory $DIR is not a tree in $COMMIT" >&2
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exit 1
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fi
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# get the tree at the time of the last subtree update
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tree_commit=$(git show -s --format="%T" $old)
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echo "$DIR in $COMMIT was last updated in commit $old (tree $tree_commit)"
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# ... and compare the actual tree with it
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if [ "$tree_actual_tree" != "$tree_commit" ]; then
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git diff $tree_commit $tree_actual_tree >&2
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echo "FAIL: subtree directory was touched without subtree merge" >&2
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exit 1
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fi
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# get the tree in the subtree commit referred to
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if [ "d$(git cat-file -t $rev 2>/dev/null)" != dcommit ]; then
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echo "subtree commit $rev unavailable: cannot compare" >&2
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exit
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fi
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tree_subtree=$(git show -s --format="%T" $rev)
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echo "$DIR in $COMMIT was last updated to upstream commit $rev (tree $tree_subtree)"
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# ... and compare the actual tree with it
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if [ "$tree_actual_tree" != "$tree_subtree" ]; then
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echo "FAIL: subtree update commit differs from upstream tree!" >&2
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exit 1
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fi
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echo "GOOD"
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