From 3ca1ce7a3779d0b875385eb4045bd5a51dc839da Mon Sep 17 00:00:00 2001 From: Vyacheslav Yurkov Date: Fri, 10 Dec 2021 14:01:43 +0100 Subject: oeqa/selftest: unit tests for overlayfs-etc Signed-off-by: Vyacheslav Yurkov Signed-off-by: Richard Purdie --- meta/lib/oeqa/selftest/cases/overlayfs.py | 184 ++++++++++++++++++++++++++++++ 1 file changed, 184 insertions(+) (limited to 'meta/lib/oeqa/selftest') diff --git a/meta/lib/oeqa/selftest/cases/overlayfs.py b/meta/lib/oeqa/selftest/cases/overlayfs.py index 43415778ce..82007fade7 100644 --- a/meta/lib/oeqa/selftest/cases/overlayfs.py +++ b/meta/lib/oeqa/selftest/cases/overlayfs.py @@ -209,3 +209,187 @@ EOT line = getline_qemu(output, "upperdir=/mnt/overlay/upper/usr/share/another-overlay-mount") self.assertTrue(line and line.startswith("overlay"), msg=output) + +class OverlayFSEtcRunTimeTests(OESelftestTestCase): + """overlayfs-etc class tests""" + + def test_all_required_variables_set(self): + """ + Summary: Check that required variables are set + Expected: Fail when any of required variables is missing + Author: Vyacheslav Yurkov + """ + + configBase = """ +DISTRO_FEATURES += "systemd" + +# Use systemd as init manager +VIRTUAL-RUNTIME_init_manager = "systemd" + +# enable overlayfs in the kernel +KERNEL_EXTRA_FEATURES:append = " features/overlayfs/overlayfs.scc" + +# Image configuration for overlayfs-etc +EXTRA_IMAGE_FEATURES += "overlayfs-etc" +IMAGE_FEATURES:remove = "package-management" +""" + configMountPoint = """ +OVERLAYFS_ETC_MOUNT_POINT = "/data" +""" + configDevice = """ +OVERLAYFS_ETC_DEVICE = "/dev/mmcblk0p1" +""" + + self.write_config(configBase) + res = bitbake('core-image-minimal', ignore_status=True) + line = getline(res, "OVERLAYFS_ETC_MOUNT_POINT must be set in your MACHINE configuration") + self.assertTrue(line, msg=res.output) + + self.append_config(configMountPoint) + res = bitbake('core-image-minimal', ignore_status=True) + line = getline(res, "OVERLAYFS_ETC_DEVICE must be set in your MACHINE configuration") + self.assertTrue(line, msg=res.output) + + self.append_config(configDevice) + res = bitbake('core-image-minimal', ignore_status=True) + line = getline(res, "OVERLAYFS_ETC_FSTYPE should contain a valid file system type on /dev/mmcblk0p1") + self.assertTrue(line, msg=res.output) + + def test_image_feature_conflict(self): + """ + Summary: Overlayfs-etc is not allowed to be used with package-management + Expected: Feature conflict + Author: Vyacheslav Yurkov + """ + + config = """ +DISTRO_FEATURES += "systemd" + +# Use systemd as init manager +VIRTUAL-RUNTIME_init_manager = "systemd" + +# enable overlayfs in the kernel +KERNEL_EXTRA_FEATURES:append = " features/overlayfs/overlayfs.scc" +EXTRA_IMAGE_FEATURES += "overlayfs-etc" +EXTRA_IMAGE_FEATURES += "package-management" +""" + + self.write_config(config) + + res = bitbake('core-image-minimal', ignore_status=True) + line = getline(res, "contains conflicting IMAGE_FEATURES") + self.assertTrue("overlayfs-etc" in res.output, msg=res.output) + self.assertTrue("package-management" in res.output, msg=res.output) + + def test_image_feature_is_missing_class_included(self): + configAppend = """ +INHERIT += "overlayfs-etc" +""" + self.run_check_image_feature(configAppend) + + def test_image_feature_is_missing(self): + self.run_check_image_feature() + + def run_check_image_feature(self, appendToConfig=""): + """ + Summary: Overlayfs-etc class is not applied when image feature is not set + even if we inherit it directly, + Expected: Image is created successfully but /etc is not an overlay + Author: Vyacheslav Yurkov + """ + + config = f""" +DISTRO_FEATURES += "systemd" + +# Use systemd as init manager +VIRTUAL-RUNTIME_init_manager = "systemd" + +# enable overlayfs in the kernel +KERNEL_EXTRA_FEATURES:append = " features/overlayfs/overlayfs.scc" + +IMAGE_FSTYPES += "wic" +WKS_FILE = "overlayfs_etc.wks.in" + +EXTRA_IMAGE_FEATURES += "read-only-rootfs" +# Image configuration for overlayfs-etc +OVERLAYFS_ETC_MOUNT_POINT = "/data" +OVERLAYFS_ETC_DEVICE = "/dev/sda3" +{appendToConfig} +""" + + self.write_config(config) + + bitbake('core-image-minimal') + + with runqemu('core-image-minimal', image_fstype='wic') as qemu: + status, output = qemu.run_serial("/bin/mount") + + line = getline_qemu(output, "upperdir=/data/overlay-etc/upper") + self.assertFalse(line, msg=output) + + def test_sbin_init_preinit(self): + self.run_sbin_init(False) + + def test_sbin_init_original(self): + self.run_sbin_init(True) + + def run_sbin_init(self, origInit): + """ + Summary: Confirm we can replace original init and mount overlay on top of /etc + Expected: Image is created successfully and /etc is mounted as an overlay + Author: Vyacheslav Yurkov + """ + + config = """ +DISTRO_FEATURES += "systemd" + +# Use systemd as init manager +VIRTUAL-RUNTIME_init_manager = "systemd" + +# enable overlayfs in the kernel +KERNEL_EXTRA_FEATURES:append = " features/overlayfs/overlayfs.scc" + +IMAGE_FSTYPES += "wic" +OVERLAYFS_INIT_OPTION = "{OVERLAYFS_INIT_OPTION}" +WKS_FILE = "overlayfs_etc.wks.in" + +EXTRA_IMAGE_FEATURES += "read-only-rootfs" +# Image configuration for overlayfs-etc +EXTRA_IMAGE_FEATURES += "overlayfs-etc" +IMAGE_FEATURES:remove = "package-management" +OVERLAYFS_ETC_MOUNT_POINT = "/data" +OVERLAYFS_ETC_FSTYPE = "ext4" +OVERLAYFS_ETC_DEVICE = "/dev/sda3" +OVERLAYFS_ETC_USE_ORIG_INIT_NAME = "{OVERLAYFS_ETC_USE_ORIG_INIT_NAME}" +""" + + args = { + 'OVERLAYFS_INIT_OPTION': "" if origInit else "init=/sbin/preinit", + 'OVERLAYFS_ETC_USE_ORIG_INIT_NAME': int(origInit == True) + } + + self.write_config(config.format(**args)) + + bitbake('core-image-minimal') + testFile = "/etc/my-test-data" + + with runqemu('core-image-minimal', image_fstype='wic', discard_writes=False) as qemu: + status, output = qemu.run_serial("/bin/mount") + + line = getline_qemu(output, "/dev/sda3") + self.assertTrue("/data" in output, msg=output) + + line = getline_qemu(output, "upperdir=/data/overlay-etc/upper") + self.assertTrue(line and line.startswith("/data/overlay-etc/upper on /etc type overlay"), msg=output) + + status, output = qemu.run_serial("touch " + testFile) + status, output = qemu.run_serial("sync") + status, output = qemu.run_serial("ls -1 " + testFile) + line = getline_qemu(output, testFile) + self.assertTrue(line and line.startswith(testFile), msg=output) + + # Check that file exists in /etc after reboot + with runqemu('core-image-minimal', image_fstype='wic') as qemu: + status, output = qemu.run_serial("ls -1 " + testFile) + line = getline_qemu(output, testFile) + self.assertTrue(line and line.startswith(testFile), msg=output) -- cgit 1.2.3-korg