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Make --repair-path also repair corrupt optimised links

Browse source 
There already existed a smoke test for the link content length,
but it appears that there exists some corruptions pernicious enough
to replace the file content with zeros, and keeping the same length.

--repair-path now goes as far as checking the content of the link,
making it true to its name and actually repairing the path for such
coruption cases.
This commit is contained in:
Guillaume Maudoux 2022-01-11 11:57:45 +01:00
parent c260640dec
commit e9a4abdb5d
6 changed files with 75 additions and 20 deletions
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47
tests/repair.sh
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@ -74,3 +74,50 @@ if [ "$(nix-hash $path2)" != "$hash" -o -e $path2/bad ]; then
echo "path not repaired properly" >&2
exit 1
fi
# Check that --repair-path also checks content of optimised symlinks (1/2)
nix-store --verify-path $path2
if (! nix-store --optimize); then
echo "nix-store --optimize failed to optimize the store" >&2
exit 1
fi
chmod u+w $path2/bar
echo 'rabrab' > $path2/bar # different length
if nix-store --verify-path $path2; then
echo "nix-store --verify-path did not detect .links file corruption" >&2
exit 1
fi
nix-store --repair-path $path2 --option auto-optimise-store true
if [ "$(nix-hash $path2)" != "$hash" -o "BAR" != "$(< $path2/bar)" ]; then
echo "path not repaired properly" >&2
exit 1
fi
# Check that --repair-path also checks content of optimised symlinks (2/2)
nix-store --verify-path $path2
if (! nix-store --optimize); then
echo "nix-store --optimize failed to optimize the store" >&2
exit 1
fi
chmod u+w $path2
chmod u+w $path2/bar
sed -e 's/./X/g' < $path2/bar > $path2/tmp # same length, different content.
cp $path2/tmp $path2/bar
rm $path2/tmp
if nix-store --verify-path $path2; then
echo "nix-store --verify-path did not detect .links file corruption" >&2
exit 1
fi
nix-store --repair-path $path2 --substituters "file://$cacheDir" --no-require-sigs --option auto-optimise-store true
if [ "$(nix-hash $path2)" != "$hash" -o "BAR" != "$(< $path2/bar)" ]; then
echo "path not repaired properly" >&2
exit 1
fi