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summary: Ensure that snap layouts work with parallel installed snaps
details: |
This test installs a test snap that uses layout declarations. The snap is
installed under its regular name as well as a parallel instance. The test
verifies that the layout requested by snap works and operates only on the
data owned by given snap instance.
prepare: |
echo "Ensure feature flags are enabled"
snap set system experimental.parallel-instances=true
execute: |
echo "Install the regular snap"
"$TESTSTOOLS"/snaps-state install-local test-snapd-layout
echo "Sideload the parallel installed snap"
"$TESTSTOOLS"/snaps-state install-local-as test-snapd-layout test-snapd-layout_foo
for name in test-snapd-layout test-snapd-layout_foo; do
# workaround trespassing bug
rm -rf /etc/demo /etc/demo.conf /etc/demo.cfg
echo "snap declaring layouts doesn't explode on startup"
$name.sh -c "true"
echo "layout declarations are honored"
$name.sh -c "test -d /etc/demo"
$name.sh -c "test -f /etc/demo.conf"
$name.sh -c "test -h /etc/demo.cfg"
#shellcheck disable=SC2016
test "$($name.sh -c "readlink /etc/demo.cfg")" = "$($name.sh -c 'echo /var/snap/$SNAP_NAME/common/etc/demo.conf')"
$name.sh -c "test -d /usr/share/demo"
$name.sh -c "test -d /var/lib/demo"
$name.sh -c "test -d /var/cache/demo"
$name.sh -c "test -d /opt/demo"
$name.sh -c "test -d /bin/very/weird/place"
# Ideally we'd perform this test but the rsyslog directory has mode 700 and user mode 108:4
# test-snapd-layout.sh -c "test -d /var/spool/rsyslog/demo"
echo "layout locations pointing to SNAP_DATA and SNAP_COMMON of $name are writable"
echo "and the writes go to the right place in the backing store"
$name.sh -c "echo $name foo-1 > /etc/demo/writable"
#shellcheck disable=SC2016
$name.sh -c 'cat $SNAP_COMMON/etc/demo/writable' | MATCH "$name foo-1"
$name.sh -c "echo $name foo-2 > /etc/demo.conf"
#shellcheck disable=SC2016
$name.sh -c 'cat $SNAP_COMMON/etc/demo.conf' | MATCH "$name foo-2"
# NOTE: this is a symlink to demo.conf, effectively
$name.sh -c "echo $name foo-3 > /etc/demo.cfg"
#shellcheck disable=SC2016
$name.sh -c 'cat $SNAP_COMMON/etc/demo.conf' | MATCH "$name foo-3"
$name.sh -c "echo $name foo-4 > /var/lib/demo/writable"
#shellcheck disable=SC2016
$name.sh -c 'cat $SNAP_DATA/var/lib/demo/writable' | MATCH "$name foo-4"
$name.sh -c "echo $name foo-5 > /var/cache/demo/writable"
#shellcheck disable=SC2016
$name.sh -c 'cat $SNAP_DATA/var/cache/demo/writable' | MATCH "$name foo-5"
echo "layout locations pointing to $name \$SNAP are readable"
$name.sh -c "test -r /usr/share/demo/file"
$name.sh -c "test -r /opt/demo/file"
echo "layout locations in dynamically created $name \$SNAP directories are writable"
# shellcheck disable=SC2016
$name.sh -c 'test -w $SNAP/bin/very/weird/place'
$name.sh -c 'test -w /bin/very/weird/place'
done
echo "verify snap data is correct on the outside of snap mount namespace"
for name in test-snapd-layout test-snapd-layout_foo; do
MATCH "$name foo-1" < "/var/snap/$name/common/etc/demo/writable"
# demo.cfg was a symlink to demo.conf
MATCH "$name foo-3" < "/var/snap/$name/common/etc/demo.conf"
MATCH "$name foo-4" < "/var/snap/$name/x1/var/lib/demo/writable"
MATCH "$name foo-5" < "/var/snap/$name/x1/var/cache/demo/writable"
done
|
