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