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oeqa/selftest: unit tests for overlayfs-etc
(From OE-Core rev: 3ca1ce7a3779d0b875385eb4045bd5a51dc839da) Signed-off-by: Vyacheslav Yurkov <uvv.mail@gmail.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Vyacheslav Yurkov
committed by
Richard Purdie
Richard Purdie
parent
ae56b39021
commit
5221ca9296
@@ -209,3 +209,187 @@ EOT
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line = getline_qemu(output, "upperdir=/mnt/overlay/upper/usr/share/another-overlay-mount")
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line = getline_qemu(output, "upperdir=/mnt/overlay/upper/usr/share/another-overlay-mount")
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self.assertTrue(line and line.startswith("overlay"), msg=output)
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self.assertTrue(line and line.startswith("overlay"), msg=output)
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class OverlayFSEtcRunTimeTests(OESelftestTestCase):
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"""overlayfs-etc class tests"""
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def test_all_required_variables_set(self):
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"""
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Summary: Check that required variables are set
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Expected: Fail when any of required variables is missing
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Author: Vyacheslav Yurkov <uvv.mail@gmail.com>
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"""
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configBase = """
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DISTRO_FEATURES += "systemd"
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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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# Image configuration for overlayfs-etc
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EXTRA_IMAGE_FEATURES += "overlayfs-etc"
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IMAGE_FEATURES:remove = "package-management"
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"""
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configMountPoint = """
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OVERLAYFS_ETC_MOUNT_POINT = "/data"
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"""
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configDevice = """
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OVERLAYFS_ETC_DEVICE = "/dev/mmcblk0p1"
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"""
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self.write_config(configBase)
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res = bitbake('core-image-minimal', ignore_status=True)
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line = getline(res, "OVERLAYFS_ETC_MOUNT_POINT must be set in your MACHINE configuration")
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self.assertTrue(line, msg=res.output)
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self.append_config(configMountPoint)
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res = bitbake('core-image-minimal', ignore_status=True)
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line = getline(res, "OVERLAYFS_ETC_DEVICE must be set in your MACHINE configuration")
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self.assertTrue(line, msg=res.output)
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self.append_config(configDevice)
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res = bitbake('core-image-minimal', ignore_status=True)
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line = getline(res, "OVERLAYFS_ETC_FSTYPE should contain a valid file system type on /dev/mmcblk0p1")
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self.assertTrue(line, msg=res.output)
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def test_image_feature_conflict(self):
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"""
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Summary: Overlayfs-etc is not allowed to be used with package-management
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Expected: Feature conflict
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Author: Vyacheslav Yurkov <uvv.mail@gmail.com>
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"""
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config = """
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DISTRO_FEATURES += "systemd"
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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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EXTRA_IMAGE_FEATURES += "overlayfs-etc"
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EXTRA_IMAGE_FEATURES += "package-management"
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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 = getline(res, "contains conflicting IMAGE_FEATURES")
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self.assertTrue("overlayfs-etc" in res.output, msg=res.output)
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self.assertTrue("package-management" in res.output, msg=res.output)
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def test_image_feature_is_missing_class_included(self):
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configAppend = """
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INHERIT += "overlayfs-etc"
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"""
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self.run_check_image_feature(configAppend)
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def test_image_feature_is_missing(self):
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self.run_check_image_feature()
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def run_check_image_feature(self, appendToConfig=""):
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"""
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Summary: Overlayfs-etc class is not applied when image feature is not set
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even if we inherit it directly,
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Expected: Image is created successfully but /etc is not an overlay
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Author: Vyacheslav Yurkov <uvv.mail@gmail.com>
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"""
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config = f"""
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DISTRO_FEATURES += "systemd"
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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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IMAGE_FSTYPES += "wic"
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WKS_FILE = "overlayfs_etc.wks.in"
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EXTRA_IMAGE_FEATURES += "read-only-rootfs"
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# Image configuration for overlayfs-etc
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OVERLAYFS_ETC_MOUNT_POINT = "/data"
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OVERLAYFS_ETC_DEVICE = "/dev/sda3"
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{appendToConfig}
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"""
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self.write_config(config)
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bitbake('core-image-minimal')
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with runqemu('core-image-minimal', image_fstype='wic') as qemu:
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status, output = qemu.run_serial("/bin/mount")
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line = getline_qemu(output, "upperdir=/data/overlay-etc/upper")
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self.assertFalse(line, msg=output)
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def test_sbin_init_preinit(self):
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self.run_sbin_init(False)
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def test_sbin_init_original(self):
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self.run_sbin_init(True)
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def run_sbin_init(self, origInit):
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"""
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Summary: Confirm we can replace original init and mount overlay on top of /etc
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Expected: Image is created successfully and /etc is mounted as an overlay
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Author: Vyacheslav Yurkov <uvv.mail@gmail.com>
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"""
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config = """
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DISTRO_FEATURES += "systemd"
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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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IMAGE_FSTYPES += "wic"
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OVERLAYFS_INIT_OPTION = "{OVERLAYFS_INIT_OPTION}"
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WKS_FILE = "overlayfs_etc.wks.in"
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EXTRA_IMAGE_FEATURES += "read-only-rootfs"
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# Image configuration for overlayfs-etc
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EXTRA_IMAGE_FEATURES += "overlayfs-etc"
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IMAGE_FEATURES:remove = "package-management"
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OVERLAYFS_ETC_MOUNT_POINT = "/data"
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OVERLAYFS_ETC_FSTYPE = "ext4"
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OVERLAYFS_ETC_DEVICE = "/dev/sda3"
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OVERLAYFS_ETC_USE_ORIG_INIT_NAME = "{OVERLAYFS_ETC_USE_ORIG_INIT_NAME}"
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"""
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args = {
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'OVERLAYFS_INIT_OPTION': "" if origInit else "init=/sbin/preinit",
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'OVERLAYFS_ETC_USE_ORIG_INIT_NAME': int(origInit == True)
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}
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self.write_config(config.format(**args))
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bitbake('core-image-minimal')
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testFile = "/etc/my-test-data"
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with runqemu('core-image-minimal', image_fstype='wic', discard_writes=False) as qemu:
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status, output = qemu.run_serial("/bin/mount")
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line = getline_qemu(output, "/dev/sda3")
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self.assertTrue("/data" in output, msg=output)
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line = getline_qemu(output, "upperdir=/data/overlay-etc/upper")
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self.assertTrue(line and line.startswith("/data/overlay-etc/upper on /etc type overlay"), msg=output)
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status, output = qemu.run_serial("touch " + testFile)
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status, output = qemu.run_serial("sync")
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status, output = qemu.run_serial("ls -1 " + testFile)
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line = getline_qemu(output, testFile)
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self.assertTrue(line and line.startswith(testFile), msg=output)
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# Check that file exists in /etc after reboot
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with runqemu('core-image-minimal', image_fstype='wic') as qemu:
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status, output = qemu.run_serial("ls -1 " + testFile)
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line = getline_qemu(output, testFile)
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self.assertTrue(line and line.startswith(testFile), msg=output)
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