Test that delete works for duplicate file edge case.

This commit is contained in:
Ben Radford 2023-07-26 12:33:26 +01:00 committed by Ben Radford
parent d9688ba708
commit cc6f8aa91a
3 changed files with 45 additions and 1 deletions

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@ -0,0 +1,38 @@
#!/usr/bin/env bash
set -eu -o pipefail
set -x
source common.sh
# Avoid store dir being inside sandbox build-dir
unset NIX_STORE_DIR
unset NIX_STATE_DIR
storeDirs
initLowerStore
mountOverlayfs
# Add to overlay before lower to ensure file is duplicated
upperPath=$(nix-store --store "$storeB" --add delete.sh)
lowerPath=$(nix-store --store "$storeA" --add delete.sh)
[[ "$upperPath" = "$lowerPath" ]]
# Check there really are two files with different inodes
upperInode=$(stat -c %i "$storeBRoot/$upperPath")
lowerInode=$(stat -c %i "$storeA/$lowerPath")
[[ "$upperInode" != "$lowerInode" ]]
# Now delete file via the overlay store
nix-store --store "$storeB" --delete "$upperPath"
# Check there is no longer a file in upper layer
expect 1 stat "$storeBTop/${upperPath##/nix/store/}"
# Check that overlay file is now the one in lower layer
upperInode=$(stat -c %i "$storeBRoot/$upperPath")
lowerInode=$(stat -c %i "$storeA/$lowerPath")
[[ "$upperInode" = "$lowerInode" ]]

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@ -0,0 +1,5 @@
source common.sh
requireEnvironment
setupConfig
execUnshare ./delete-inner.sh

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@ -6,6 +6,7 @@ overlay-local-store-tests := \
$(d)/add-lower.sh \
$(d)/gc.sh \
$(d)/verify.sh \
$(d)/optimise.sh
$(d)/optimise.sh \
$(d)/delete.sh
install-tests-groups += overlay-local-store