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#!/bin/bash
# Test the current package under a different kernel.
# Requires virtme and qemu to be installed.
set -eu
set -o pipefail
if [[ "${1:-}" = "--in-vm" ]]; then
shift
mount -t bpf bpf /sys/fs/bpf
export CGO_ENABLED=0
export GOFLAGS=-mod=readonly
export GOPATH=/run/go-path
export GOPROXY=file:///run/go-path/pkg/mod/cache/download
export GOSUMDB=off
export GOCACHE=/run/go-cache
if [[ -d "/run/input/bpf" ]]; then
export KERNEL_SELFTESTS="/run/input/bpf"
fi
readonly output="${1}"
shift
echo Running tests...
go test -v -coverpkg=./... -coverprofile="$output/coverage.txt" -count 1 ./...
touch "$output/success"
exit 0
fi
# Pull all dependencies, so that we can run tests without the
# vm having network access.
go mod download
# Use sudo if /dev/kvm isn't accessible by the current user.
sudo=""
if [[ ! -r /dev/kvm || ! -w /dev/kvm ]]; then
sudo="sudo"
fi
readonly sudo
readonly kernel_version="${1:-}"
if [[ -z "${kernel_version}" ]]; then
echo "Expecting kernel version as first argument"
exit 1
fi
readonly kernel="linux-${kernel_version}.bz"
readonly selftests="linux-${kernel_version}-selftests-bpf.bz"
readonly input="$(mktemp -d)"
readonly output="$(mktemp -d)"
readonly tmp_dir="${TMPDIR:-/tmp}"
readonly branch="${BRANCH:-master}"
fetch() {
echo Fetching "${1}"
wget -nv -N -P "${tmp_dir}" "https://github.com/cilium/ci-kernels/raw/${branch}/${1}"
}
fetch "${kernel}"
if fetch "${selftests}"; then
mkdir "${input}/bpf"
tar --strip-components=4 -xjf "${tmp_dir}/${selftests}" -C "${input}/bpf"
else
echo "No selftests found, disabling"
fi
echo Testing on "${kernel_version}"
$sudo virtme-run --kimg "${tmp_dir}/${kernel}" --memory 512M --pwd \
--rw \
--rwdir=/run/input="${input}" \
--rwdir=/run/output="${output}" \
--rodir=/run/go-path="$(go env GOPATH)" \
--rwdir=/run/go-cache="$(go env GOCACHE)" \
--script-sh "PATH=\"$PATH\" $(realpath "$0") --in-vm /run/output" \
--qemu-opts -smp 2 # need at least two CPUs for some tests
if [[ ! -e "${output}/success" ]]; then
echo "Test failed on ${kernel_version}"
exit 1
else
echo "Test successful on ${kernel_version}"
if [[ -v COVERALLS_TOKEN ]]; then
goveralls -coverprofile="${output}/coverage.txt" -service=semaphore -repotoken "$COVERALLS_TOKEN"
fi
fi
$sudo rm -r "${input}"
$sudo rm -r "${output}"
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