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#!/bin/bash
# A basic integration test for composefs; we capture /usr/bin
# from the host environment into a cfs, then mount it and compare
# the output of ls -lR (without hardlink counts).
set -xeuo pipefail
# Set to setup an explicit temporary ext4 loopback mounted fs with fsverity
WITH_TEMP_VERITY=${WITH_TEMP_VERITY:-}
if test -n "${WITH_TEMP_VERITY}"; then
tmpdisk=$(mktemp -p /var/tmp)
truncate -s 100G ${tmpdisk}
mkfs.ext4 -O verity ${tmpdisk}
tmp_mnt=$(mktemp -d)
mount -o loop ${tmpdisk} ${tmp_mnt}
rm -f ${tmpdisk}
cfsroot=${tmp_mnt}
fi
orig=$(pwd)
cfsroot=${cfsroot:-/composefs}
rm ${cfsroot}/tmp -rf
mkdir -p ${cfsroot}/{objects,roots,tmp}
cd ${cfsroot}/tmp
run_test() {
local testsrc=$1
local dumpdir_args="$2"
mkcomposefs --print-digest --digest-store=${cfsroot}/objects ${testsrc} ${cfsroot}/roots/test.cfs | tee digest.txt
prev_digest=$(cat digest.txt)
new_digest=$(mkcomposefs --print-digest-only ${testsrc})
test "$prev_digest" = "$new_digest"
if which fsck.erofs &>/dev/null; then
fsck.erofs ${cfsroot}/roots/test.cfs
fi
mkdir -p mnt
mount.composefs -o basedir=${cfsroot}/objects ${cfsroot}/roots/test.cfs mnt
$orig/tests/dumpdir $dumpdir_args ${testsrc} > src-dump.txt
$orig/tests/dumpdir $dumpdir_args mnt > mnt-dump.txt
failed=
if ! diff -u src-dump.txt mnt-dump.txt; then
failed=1
fi
if test -n "${failed}"; then
umount mnt
exit 1
fi
new_digest=$(mkcomposefs --print-digest-only mnt)
test "$prev_digest" = "$new_digest"
umount mnt
}
run_test /usr/bin "--no-nlink"
check_fsverity () {
fsverity --version >/dev/null 2>&1 || return 1
tmpfile=$(mktemp --tmpdir lcfs-fsverity.XXXXXX)
echo foo > $tmpfile
fsverity enable $tmpfile >/dev/null 2>&1 || return 1
return 0
}
echo "fsverity test" > ${cfsroot}/test-fsverity
if fsverity enable ${cfsroot}/test-fsverity; then
echo "fsverity is supported"
else
if test -n "${WITH_TEMP_VERITY}"; then
echo "fsverity unsupported, but is required" 1>&2
exit 1
fi
echo "fsverity unsupported"
fi
rm -f ${cfsroot}/test-fsverity
# Don't create whiteouts, as they depend on a very recent kernel to work at all
$orig/tests/gendir --privileged --nowhiteout ${cfsroot}/tmp/rootfs
# nlink doesn't work for the toplevel dir in composefs, because that is from overlayfs, not erofs
run_test ${cfsroot}/tmp/rootfs "--no-root-nlink"
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