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#
# SPDX-License-Identifier: MIT
#
from oeqa.selftest.case import OESelftestTestCase
from oeqa.utils.commands import runCmd, bitbake, get_bb_var, runqemu
class OverlayFSTests(OESelftestTestCase):
"""Overlayfs class usage tests"""
def getline_qemu(self, out, line):
for l in out.split('\n'):
if line in l:
return l
def getline(self, res, line):
return self.getline_qemu(res.output, line)
def add_overlay_conf_to_machine(self):
machine_inc = """
OVERLAYFS_MOUNT_POINT[mnt-overlay] = "/mnt/overlay"
"""
self.set_machine_config(machine_inc)
def test_distro_features_missing(self):
"""
Summary: Check that required DISTRO_FEATURES are set
Expected: Fail when either systemd or overlayfs are not in DISTRO_FEATURES
Author: Vyacheslav Yurkov <uvv.mail@gmail.com>
"""
config = """
IMAGE_INSTALL:append = " overlayfs-user"
"""
overlayfs_recipe_append = """
inherit overlayfs
"""
self.write_config(config)
self.add_overlay_conf_to_machine()
self.write_recipeinc('overlayfs-user', overlayfs_recipe_append)
res = bitbake('core-image-minimal', ignore_status=True)
line = self.getline(res, "overlayfs-user was skipped: missing required distro features")
self.assertTrue("overlayfs" in res.output, msg=res.output)
self.assertTrue("systemd" in res.output, msg=res.output)
self.assertTrue("ERROR: Required build target 'core-image-minimal' has no buildable providers." in res.output, msg=res.output)
def test_not_all_units_installed(self):
"""
Summary: Test QA check that we have required mount units in the image
Expected: Fail because mount unit for overlay partition is not installed
Author: Vyacheslav Yurkov <uvv.mail@gmail.com>
"""
config = """
IMAGE_INSTALL:append = " overlayfs-user"
DISTRO_FEATURES += "systemd overlayfs"
"""
self.write_config(config)
self.add_overlay_conf_to_machine()
res = bitbake('core-image-minimal', ignore_status=True)
line = self.getline(res, "Unit name mnt-overlay.mount not found in systemd unit directories")
self.assertTrue(line and line.startswith("WARNING:"), msg=res.output)
line = self.getline(res, "Not all mount units are installed by the BSP")
self.assertTrue(line and line.startswith("ERROR:"), msg=res.output)
def test_mount_unit_not_set(self):
"""
Summary: Test whether mount unit was set properly
Expected: Fail because mount unit was not set
Author: Vyacheslav Yurkov <uvv.mail@gmail.com>
"""
config = """
IMAGE_INSTALL:append = " overlayfs-user"
DISTRO_FEATURES += "systemd overlayfs"
"""
self.write_config(config)
res = bitbake('core-image-minimal', ignore_status=True)
line = self.getline(res, "A recipe uses overlayfs class but there is no OVERLAYFS_MOUNT_POINT set in your MACHINE configuration")
self.assertTrue(line and line.startswith("Parsing recipes...ERROR:"), msg=res.output)
def test_wrong_mount_unit_set(self):
"""
Summary: Test whether mount unit was set properly
Expected: Fail because not the correct flag used for mount unit
Author: Vyacheslav Yurkov <uvv.mail@gmail.com>
"""
config = """
IMAGE_INSTALL:append = " overlayfs-user"
DISTRO_FEATURES += "systemd overlayfs"
"""
wrong_machine_config = """
OVERLAYFS_MOUNT_POINT[usr-share-overlay] = "/usr/share/overlay"
"""
self.write_config(config)
self.set_machine_config(wrong_machine_config)
res = bitbake('core-image-minimal', ignore_status=True)
line = self.getline(res, "Missing required mount point for OVERLAYFS_MOUNT_POINT[mnt-overlay] in your MACHINE configuration")
self.assertTrue(line and line.startswith("Parsing recipes...ERROR:"), msg=res.output)
def test_correct_image(self):
"""
Summary: Check that we can create an image when all parameters are
set correctly
Expected: Image is created successfully
Author: Vyacheslav Yurkov <uvv.mail@gmail.com>
"""
config = """
IMAGE_INSTALL:append = " overlayfs-user systemd-machine-units"
DISTRO_FEATURES += "systemd overlayfs"
# Use systemd as init manager
VIRTUAL-RUNTIME_init_manager = "systemd"
# enable overlayfs in the kernel
KERNEL_EXTRA_FEATURES:append = " features/overlayfs/overlayfs.scc"
"""
systemd_machine_unit_append = """
SYSTEMD_SERVICE:${PN} += " \
mnt-overlay.mount \
"
do_install:append() {
install -d ${D}${systemd_system_unitdir}
cat <<EOT > ${D}${systemd_system_unitdir}/mnt-overlay.mount
[Unit]
Description=Tmpfs directory
DefaultDependencies=no
[Mount]
What=tmpfs
Where=/mnt/overlay
Type=tmpfs
Options=mode=1777,strictatime,nosuid,nodev
[Install]
WantedBy=multi-user.target
EOT
}
"""
self.write_config(config)
self.add_overlay_conf_to_machine()
self.write_recipeinc('systemd-machine-units', systemd_machine_unit_append)
bitbake('core-image-minimal')
with runqemu('core-image-minimal') as qemu:
# Check that we have /mnt/overlay fs mounted as tmpfs and
# /usr/share/my-application as an overlay (see overlayfs-user recipe)
status, output = qemu.run_serial("/bin/mount -t tmpfs,overlay")
line = self.getline_qemu(output, "on /mnt/overlay")
self.assertTrue(line and line.startswith("tmpfs"), msg=output)
line = self.getline_qemu(output, "upperdir=/mnt/overlay/upper/usr/share/my-application")
self.assertTrue(line and line.startswith("overlay"), msg=output)
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