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https://passt.top/passt
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test: Use context system for guest commands
Extends the context system in the test scripts to allow executing commands within a guest. Do this without requiring an existing network in the guest by using socat to run ssh via a vsock connection. We do need some additional "sleep"s in the tests, because the new faster dispatch means that sometimes we attempt to connect before socat has managed to listen. For now, only use this for the plain "passt" tests. The "passt_in_ns" and other tests have additional complications we still need to deal with. Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
This commit is contained in:
David Gibson
Stefano Brivio
parent
a8a437abd6
commit
56e755ba11
2
test/.gitignore
vendored
2
test/.gitignore
vendored
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@ -11,3 +11,5 @@ QEMU_EFI.fd
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*.stop
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*.js
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nsholder
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guest-key
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guest-key.pub
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@ -57,7 +57,7 @@ DOWNLOAD_ASSETS = mbuto \
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LOCAL_ASSETS = mbuto.img QEMU_EFI.fd \
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$(DEBIAN_IMGS:%=prepared-%) $(FEDORA_IMGS:%=prepared-%) \
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$(UBUNTU_NEW_IMGS:%=prepared-%) \
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nsholder
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nsholder guest-key guest-key.pub
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ASSETS = $(DOWNLOAD_ASSETS) $(LOCAL_ASSETS)
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@ -68,7 +68,10 @@ assets: $(ASSETS)
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mbuto:
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git clone git://mbuto.sh/mbuto
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mbuto.img: passt.mbuto mbuto
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guest-key guest-key.pub:
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ssh-keygen -f guest-key -N ''
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mbuto.img: passt.mbuto mbuto guest-key.pub
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./mbuto/mbuto -p ./$< -c lz4 -f $@
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nsholder: nsholder.c
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@ -41,12 +41,38 @@ context_setup_nsenter() {
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echo "nsenter $@ sh -c" > "${__prefix}.enter"
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}
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# context_setup_guest() - Create a new context for running commands in a guest
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# $1: Context name
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# $2: CID to use for vsock
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context_setup_guest() {
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__name="$1"
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__cid="$2"
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__prefix="${LOGDIR}/context_${__name}"
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context_setup_common "${__name}"
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cat > "${__prefix}.ssh" <<EOF
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Host ${__name}
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User root
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UserKnownHostsFile ${__prefix}.hosts
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StrictHostKeyChecking no
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IdentityFile ${BASEPATH}/guest-key
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IdentityAgent none
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ProxyCommand socat - VSOCK-CONNECT:${__cid}:22
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EOF
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echo "ssh -F ${__prefix}.ssh ${__name}" > "${__prefix}.enter"
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# Wait for the guest to be booted and accepting connections
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while ! ssh -F "${__prefix}.ssh" "${__name}" :; do
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sleep 0.1
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done
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}
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# context_teardown() - Remove a context (leave log files intact)
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# $1: Context name
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context_teardown() {
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__name="$1"
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__prefix="${LOGDIR}/context_${__name}"
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rm -f "${__prefix}.enter"
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rm -f "${__prefix}.enter" "${__prefix}.ssh" "${__prefix}.hosts"
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}
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# context_exists() - Test if a context currently exists
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@ -92,15 +92,13 @@ layout_passt() {
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get_info_cols
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tmux pipe-pane -O -t ${PANE_GUEST} "cat >> ${LOGDIR}/pane_guest.log"
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tmux select-pane -t ${PANE_GUEST} -T "guest"
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tmux send-keys -l -t ${PANE_INFO} 'while cat /tmp/.passt_test_log_pipe; do :; done'
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tmux send-keys -t ${PANE_INFO} -N 100 C-m
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tmux select-pane -t ${PANE_INFO} -T "test log"
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pane_watch_contexts ${PANE_HOST} host host
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pane_watch_contexts ${PANE_PASST} passt passt
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pane_watch_contexts ${PANE_GUEST} guest qemu guest
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info_layout "single passt instance with guest"
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@ -35,6 +35,7 @@ setup_distro() {
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setup_passt() {
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context_setup_host host
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context_setup_host passt
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context_setup_host qemu
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layout_passt
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@ -55,7 +56,8 @@ setup_passt() {
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context_run_bg passt "valgrind --max-stackframe=$((4 * 1024 * 1024)) --trace-children=yes --vgdb=no --error-exitcode=1 --suppressions=test/valgrind.supp ./passt ${__opts} -f -t 10001 -u 10001 -P passt.pid"
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sleep 5
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pane_run GUEST './qrap 5 qemu-system-$(uname -m)' \
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GUEST_CID=94557
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context_run_bg qemu './qrap 5 qemu-system-$(uname -m)' \
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' -machine accel=kvm' \
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' -m '${VMEM}' -cpu host -smp '${VCPUS} \
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' -kernel ' "/boot/vmlinuz-$(uname -r)" \
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@ -65,8 +67,10 @@ setup_passt() {
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'virtio-net.napi_tx=1"' \
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" -device virtio-net-pci,netdev=hostnet0,x-txburst=16384" \
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" -netdev socket,fd=5,id=hostnet0" \
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' -pidfile passt_qemu.pid'
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pane_status GUEST
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" -pidfile passt_qemu.pid" \
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" -device vhost-vsock-pci,guest-cid=$GUEST_CID"
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context_setup_guest guest $GUEST_CID
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}
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# setup_pasta() - Create a network and user namespace, connect pasta to it
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@ -307,11 +311,12 @@ teardown_distro() {
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# teardown_passt() - Kill qemu, remove passt PID file
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teardown_passt() {
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kill $(cat passt_qemu.pid)
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pane_wait GUEST
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rm passt.pid
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teardown_context_watch ${PANE_HOST} host
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teardown_context_watch ${PANE_PASST} passt
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teardown_context_watch ${PANE_GUEST} qemu guest
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}
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# teardown_passt() - Exit namespace, kill pasta process
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@ -266,7 +266,8 @@ pane_or_context_run() {
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__name="${1}"
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shift
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if context_exists "${__name}"; then
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context_run "${__name}" "$@" >/dev/null 2>&1
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# Redirect stdin to stop ssh from eating the test instructions file we have on stdin
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context_run "${__name}" "$@" >/dev/null 2>&1 < /dev/null
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else
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__uc="$(echo "${__name}" | tr [a-z] [A-Z])"
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pane_run "${__uc}" "$@"
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@ -281,7 +282,8 @@ pane_or_context_run_bg() {
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__name="${1}"
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shift
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if context_exists "${__name}"; then
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context_run_bg "${__name}" "$@" >/dev/null 2>&1
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# Redirect stdin to stop ssh from eating the test instructions file we have on stdin
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context_run_bg "${__name}" "$@" >/dev/null 2>&1 < /dev/null
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else
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__uc="$(echo "${__name}" | tr [a-z] [A-Z])"
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pane_run "${__uc}" "$@"
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@ -295,7 +297,8 @@ pane_or_context_output() {
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__name="${1}"
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shift
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if context_exists "${__name}"; then
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__output=$(context_run "${__name}" "$@" 2>/dev/null)
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# Redirect stdin to stop ssh from eating the test instructions file we have on stdin
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__output=$(context_run "${__name}" "$@" 2>/dev/null </dev/null)
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if [ -z "${__output}" ]; then
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echo "@EMPTY@"
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else
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@ -13,15 +13,15 @@
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PROGS="${PROGS:-ash,dash,bash ip mount ls insmod mkdir ln cat chmod lsmod
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modprobe find grep mknod mv rm umount jq iperf3 dhclient hostname
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sed tr chown sipcalc cut md5sum socat dd strace ping tail killall sleep
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sysctl nproc tcp_rr tcp_crr udp_rr which tee seq bc}"
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sysctl nproc tcp_rr tcp_crr udp_rr which tee seq bc sshd ssh-keygen}"
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KMODS="${KMODS:- virtio_net virtio_pci}"
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KMODS="${KMODS:- virtio_net virtio_pci vmw_vsock_virtio_transport}"
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LINKS="${LINKS:-
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ash,dash,bash /init
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ash,dash,bash /bin/sh}"
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DIRS="${DIRS} /tmp /sbin /var/log /var/run /var/lib"
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DIRS="${DIRS} /tmp /sbin /usr/share /var/log /var/lib /etc/ssh /run/sshd /root/.ssh"
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FIXUP="${FIXUP}"'
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cat > /sbin/dhclient-script << EOF
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@ -46,7 +46,33 @@ exit 0
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EOF
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chmod 755 /sbin/dhclient-script
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ln -s /sbin /usr/sbin
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ln -s /bin /usr/bin
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ln -s /run /var/run
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:> /etc/fstab
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# sshd(dropbear) via vsock
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cat > /etc/passwd << EOF
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root:x:0:0:root:/root:/bin/sh
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sshd:x:100:100:Privilege-separated SSH:/var/empty/sshd:/sbin/nologin
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EOF
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cat > /etc/shadow << EOF
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root:::0:99999:7:::
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EOF
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chmod 000 /etc/shadow
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:> /etc/ssh/sshd_config
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ssh-keygen -A
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chmod 700 /root/.ssh
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chmod 700 /run/sshd
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# Alternative location for the priv separation dir
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ln -s /run/sshd /usr/share/empty.sshd
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cat > /root/.ssh/authorized_keys <<EOF
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'"$(cat guest-key.pub)"'
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EOF
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chmod 600 /root/.ssh/authorized_keys
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chmod 700 /root
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socat VSOCK-LISTEN:22,fork EXEC:"sshd -i -e" 2> /var/log/vsock-ssh.log &
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sh +m
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'
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@ -17,6 +17,7 @@ htools dd socat ip jq md5sum cut
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test TCP/IPv4: host to guest: big transfer
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temp TEMP_BIG
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guestb socat -u TCP4-LISTEN:10001,reuseaddr OPEN:test_big.bin,create,trunc
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sleep 1
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host dd if=/dev/urandom bs=1M count=10 > __TEMP_BIG__
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host socat -u OPEN:__TEMP_BIG__ TCP4:127.0.0.1:10001
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guestw
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@ -35,6 +36,7 @@ check [ "__GUEST_MD5_BIG__" = "__HOST_MD5_BIG__" ]
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test TCP/IPv4: host to guest: small transfer
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temp TEMP_SMALL
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guestb socat -u TCP4-LISTEN:10001,reuseaddr OPEN:test_small.bin,create,trunc
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sleep 1
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host dd if=/dev/urandom bs=2k count=1 > __TEMP_SMALL__
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host socat -u OPEN:__TEMP_SMALL__ TCP4:127.0.0.1:10001
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guestw
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@ -18,6 +18,7 @@ nstools socat ip jq md5sum cut
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test TCP/IPv4: host to guest: big transfer
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temp TEMP_BIG
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guestb socat -u TCP4-LISTEN:10001 OPEN:test_big.bin,create,trunc
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sleep 1
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host dd if=/dev/urandom bs=1M count=10 of=__TEMP_BIG__
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host socat -u OPEN:__TEMP_BIG__ TCP4:127.0.0.1:10001
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guestw
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@ -82,6 +83,7 @@ check [ "__GUEST_MD5_BIG__" = "__MD5_BIG__" ]
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test TCP/IPv4: host to guest: small transfer
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temp TEMP_SMALL
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guestb socat -u TCP4-LISTEN:10001 OPEN:test_small.bin,create,trunc
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sleep 1
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host dd if=/dev/urandom bs=2k count=100 of=__TEMP_SMALL__
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host socat -u OPEN:__TEMP_SMALL__ TCP4:127.0.0.1:10001
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guestw
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@ -129,6 +131,7 @@ check [ "__HOST_MD5_SMALL__" = "__MD5_SMALL__" ]
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test TCP/IPv4: ns to guest (using loopback address): small transfer
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guestb socat -u TCP4-LISTEN:10001 OPEN:test_small.bin,create,trunc
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sleep 1
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ns socat -u OPEN:__TEMP_NS_SMALL__ TCP4:127.0.0.1:10001
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guestw
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gout GUEST_MD5_SMALL md5sum test_small.bin | cut -d' ' -f1
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@ -136,6 +139,7 @@ check [ "__GUEST_MD5_SMALL__" = "__MD5_SMALL__" ]
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test TCP/IPv4: ns to guest (using namespace address): small transfer
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guestb socat -u TCP4-LISTEN:10001 OPEN:test_small.bin,create,trunc
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sleep 1
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ns socat -u OPEN:__TEMP_NS_SMALL__ TCP4:__ADDR__:10001
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guestw
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gout GUEST_MD5_SMALL md5sum test_small.bin | cut -d' ' -f1
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@ -143,6 +147,7 @@ check [ "__GUEST_MD5_SMALL__" = "__MD5_SMALL__" ]
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test TCP/IPv6: host to guest: big transfer
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guestb socat -u TCP6-LISTEN:10001 OPEN:test_big.bin,create,trunc
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sleep 1
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host socat -u OPEN:__TEMP_BIG__ TCP6:[::1]:10001
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guestw
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gout GUEST_MD5_BIG md5sum test_big.bin | cut -d' ' -f1
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@ -188,6 +193,7 @@ check [ "__HOST_MD5_BIG__" = "__MD5_BIG__" ]
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test TCP/IPv6: ns to guest (using loopback address): big transfer
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guestb socat -u TCP6-LISTEN:10001 OPEN:test_big.bin,create,trunc
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sleep 1
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ns socat -u OPEN:__TEMP_NS_BIG__ TCP6:[::1]:10001
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guestw
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gout GUEST_MD5_BIG md5sum test_big.bin | cut -d' ' -f1
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@ -203,6 +209,7 @@ check [ "__GUEST_MD5_BIG__" = "__MD5_BIG__" ]
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test TCP/IPv6: host to guest: small transfer
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guestb socat -u TCP6-LISTEN:10001 OPEN:test_small.bin,create,trunc
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sleep 1
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host socat -u OPEN:__TEMP_SMALL__ TCP6:[::1]:10001
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guestw
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gout GUEST_MD5_SMALL md5sum test_small.bin | cut -d' ' -f1
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@ -248,6 +255,7 @@ check [ "__HOST_MD5_SMALL__" = "__MD5_SMALL__" ]
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test TCP/IPv6: ns to guest (using loopback address): small transfer
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guestb socat -u TCP6-LISTEN:10001 OPEN:test_small.bin,create,trunc
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sleep 1
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ns socat -u OPEN:__TEMP_NS_SMALL__ TCP6:[::1]:10001
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guestw
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gout GUEST_MD5_SMALL md5sum test_small.bin | cut -d' ' -f1
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@ -18,6 +18,7 @@ test UDP/IPv4: host to guest
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temp TEMP
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temp SC_PID
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guestb (socat -u UDP4-LISTEN:10001 STDOUT & echo $! > __SC_PID__) | tee test.bin | (grep -qm1 "END_OF_TEST" && kill $(cat __SC_PID__))
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sleep 1
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host dd if=/dev/urandom bs=1k count=5 > __TEMP__ && printf "\nEND_OF_TEST\n" >> __TEMP__
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host socat -u OPEN:__TEMP__ UDP4:127.0.0.1:10001
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guestw
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