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|
summary: Verify kernel modules components work as expected
details: |
Install a kernel-modules component and verify that the shipped
kernel module is installed.
systems: [-ubuntu-1*, -ubuntu-20*, -ubuntu-22*]
environment:
# Test both encrypted and unencrypted cases
NESTED_ENABLE_TPM/encrypted: true
NESTED_ENABLE_SECURE_BOOT/encrypted: true
# unencrypted case
NESTED_ENABLE_TPM/plain: false
NESTED_ENABLE_SECURE_BOOT/plain: false
NESTED_BUILD_SNAPD_FROM_CURRENT: true
NESTED_ENABLE_OVMF: true
prepare: |
# Modify kernel and create a component
"$TESTSTOOLS"/build_kernel_with_comps.sh mac80211_hwsim wifi-comp
cp pc-kernel.snap "$(tests.nested get extra-snaps-path)"
tests.nested build-image core
tests.nested create-vm core
execute: |
# Compare times to check that drivers tree was created on
# installation, not on seeding
# shellcheck disable=SC2016
tree_birth=$(remote.exec 'date -d"$(stat --printf="%w\n" /var/lib/snapd/kernel/pc-kernel)" +%s')
reboot_time=$(remote.exec 'last reboot --time-format full | sed -n "s/wtmp begins //p"')
reboot_time=$(date -d"$reboot_time" +%s)
test "$reboot_time" -gt "$tree_birth"
# Loading the module fails
not remote.exec modprobe mac80211_hwsim
# install the component
comp_file=pc-kernel+wifi-comp.comp
remote.push "$comp_file"
remote.exec sudo snap install --dangerous "$comp_file"
# check that the component is in place
kern_ver=$(remote.exec uname -r)
comp_install_dir=/var/lib/snapd/kernel/pc-kernel/x1/lib/modules/"$kern_ver"/updates/wifi-comp
comp_dir=/snap/pc-kernel/components/mnt/wifi-comp/x1/modules/"$kern_ver"
test "$(remote.exec readlink -f "$comp_install_dir")" = "$comp_dir"
# check that module can be loaded/unloaded
remote.exec sudo modprobe mac80211_hwsim
remote.exec ip link show wlan0
remote.exec sudo rmmod mac80211_hwsim
not remote.exec ip link show wlan0
# remove the component
remote.exec sudo snap remove pc-kernel+wifi-comp
not remote.exec grep mac80211_hwsim /lib/modules/*/modules.dep
not remote.exec sudo modprobe mac80211_hwsim
# Rule to force module loading on system start (we randomly choose
# the rtc device add event for this)
rule='ACTION==\"add\", SUBSYSTEM==\"rtc\", KERNEL==\"rtc*\", RUN{builtin}+=\"kmod load mac80211_hwsim\"\n'
remote.exec "sudo sh -c 'printf \"$rule\" > /etc/udev/rules.d/70-load-wifi.rules'"
# Install jointly kernel with component
remote.push pc-kernel.snap
boot_id=$(tests.nested boot-id)
remote_chg_id=$(remote.exec sudo snap install --no-wait --dangerous pc-kernel.snap "$comp_file")
tests.nested wait-for reboot "$boot_id"
remote.exec sudo snap watch "$remote_chg_id"
remote.exec "snap change $remote_chg_id" | NOMATCH Error
# Check that the module has been loaded by the udev rule
remote.exec ip link show wlan0
# Install again, but force a failure to check revert
boot_id=$(tests.nested boot-id)
remote.exec sudo systemd-inhibit bash <<\EOF &
count=0
while ! [ -e /run/mnt/ubuntu-boot/EFI/ubuntu/try-kernel.efi ]; do
if [ "$((count++))" -gt 300 ]; then
exit 1
fi
sleep 1
done
rm /run/mnt/ubuntu-boot/EFI/ubuntu/try-kernel.efi
EOF
kernel_remover="${!}"
remote_chg_id=$(remote.exec sudo snap install --no-wait --dangerous pc-kernel.snap "$comp_file")
wait "${kernel_remover}"
tests.nested wait-for reboot "$boot_id"
# Note that snap watch will end with error
not remote.exec sudo snap watch "$remote_chg_id"
remote.exec "snap change $remote_chg_id | MATCH Error"
# Module is still loaded
remote.exec ip link show wlan0
|
