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test: Extend context system to run commands in namespace for pasta tests

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Extend the context system to allow commands to be run in a namespace
created with unshare, and use it for the namespace used in the pasta tests.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
This commit is contained in:
David Gibson 2022-09-12 20:56:21 +10:00 committed by Stefano Brivio
parent a8c32c85d5
commit a8a437abd6
3 changed files with 29 additions and 13 deletions
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21
test/lib/context
View File

@ -13,13 +13,32 @@
# Copyright Red Hat
# Author: David Gibson <david@gibson.dropbear.id.au>
# context_setup_common() - Create outline of a new context
# $1: Context name
context_setup_common() {
__name="$1"
__prefix="${LOGDIR}/context_${__name}"
echo -n "${__name}$ " > "${__prefix}.log"
}
# context_setup_host() - Create a new context for running commands on the host
# $1: Context name
context_setup_host() {
__name="$1"
__prefix="${LOGDIR}/context_${__name}"
context_setup_common "${__name}"
echo sh -c > "${__prefix}.enter"
echo -n "${__name}$ " > "${__prefix}.log"
}
# context_setup_nsenter() - Create a new context for running commands in a namespace
# $1: Context name
# $2: Namespace PID
context_setup_nsenter() {
__name="$1"
shift
__prefix="${LOGDIR}/context_${__name}"
context_setup_common "${__name}"
echo "nsenter $@ sh -c" > "${__prefix}.enter"
}
# context_teardown() - Remove a context (leave log files intact)

4
test/lib/layout
View File

@ -61,15 +61,13 @@ layout_pasta() {
get_info_cols
tmux pipe-pane -O -t ${PANE_NS} "cat >> ${LOGDIR}/pane_ns.log"
tmux select-pane -t ${PANE_NS} -T "namespace"
tmux send-keys -l -t ${PANE_INFO} 'while cat /tmp/.passt_test_log_pipe; do :; done'
tmux send-keys -t ${PANE_INFO} -N 100 C-m
tmux select-pane -t ${PANE_INFO} -T "test log"
pane_watch_contexts ${PANE_HOST} host host
pane_watch_contexts ${PANE_PASST} pasta passt
pane_watch_contexts ${PANE_NS} "namespace" unshare ns
info_layout "single pasta instance with namespace"

17
test/lib/setup
View File

@ -17,6 +17,7 @@ INITRAMFS="${BASEPATH}/mbuto.img"
VCPUS="$( [ $(nproc) -ge 8 ] && echo 6 || echo $(( $(nproc) / 2 + 1 )) )"
__mem_kib="$(sed -n 's/MemTotal:[ ]*\([0-9]*\) kB/\1/p' /proc/meminfo)"
VMEM="$((${__mem_kib} / 1024 / 4))"
NSHOLDER="${BASEPATH}/nsholder"
# setup_build() - Set up pane layout for build tests
setup_build() {
@ -72,17 +73,14 @@ setup_passt() {
setup_pasta() {
context_setup_host host
context_setup_host passt
context_setup_host unshare
layout_pasta
pane_run NS 'echo $$'
pane_wait NS
__tty_pid="$(pane_parse NS)"
context_run_bg unshare "unshare -rUnpf ${NSHOLDER} ns.hold hold"
__target_pid=$(${NSHOLDER} ns.hold pid)
pane_run NS "unshare -rUnpf /bin/sh"
pane_status NS
__target_pid=$(pstree -p ${__tty_pid} | sed -n 's/.*(\([0-9].*\))$/\1/p')
context_setup_nsenter ns -U -n -p --preserve-credentials -t ${__target_pid}
# Ports:
#
@ -318,11 +316,12 @@ teardown_passt() {
# teardown_passt() - Exit namespace, kill pasta process
teardown_pasta() {
tmux send-keys -t ${PANE_NS} "C-d"
pane_wait NS
${NSHOLDER} ns.hold stop
context_wait unshare
teardown_context_watch ${PANE_HOST} host
teardown_context_watch ${PANE_PASST} passt
teardown_context_watch ${PANE_NS} unshare ns
}
# teardown_passt_in_ns() - Exit namespace, kill qemu and pasta, remove pid file