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oeqa/selftest/overlayfs: test read-only rootfs

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Use the read-only squashfs filesystem to test the read-only case.

(From OE-Core rev: 1a61da196f014dc34a998d3e46f03abc79ebc84d)

Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Vyacheslav Yurkov <uvv.mail@gmail.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Baruch Siach 2024-03-17 20:33:25 +01:00 committed by Richard Purdie
parent 61b7acdb76
commit 0c9d83138e
2 changed files with 30 additions and 8 deletions
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4
meta-selftest/wic/overlayfs_etc.wks.in
View File

@ -1,4 +1,4 @@
part /boot --active --source bootimg-biosplusefi --ondisk sda --sourceparams="loader=grub-efi" --align 1024
part / --source rootfs --ondisk sda --fstype=ext4 --use-uuid --align 1024
part / --source rootfs --ondisk sda --fstype=${OVERLAYFS_ROOTFS_TYPE} --use-uuid --align 1024
part --ondisk sda --fstype=ext4 --size=5 --align 1024
bootloader --ptable gpt --timeout=1 --append="rootfstype=ext4 console=ttyS0,115200 console=tty0 ${OVERLAYFS_INIT_OPTION}"
bootloader --ptable gpt --timeout=1 --append="rootfstype=${OVERLAYFS_ROOTFS_TYPE} console=ttyS0,115200 console=tty0 ${OVERLAYFS_INIT_OPTION}"

34
meta/lib/oeqa/selftest/cases/overlayfs.py
View File

@ -353,6 +353,7 @@ EXTRA_IMAGE_FEATURES += "read-only-rootfs"
# Image configuration for overlayfs-etc
OVERLAYFS_ETC_MOUNT_POINT = "/data"
OVERLAYFS_ETC_DEVICE = "/dev/sda3"
OVERLAYFS_ROOTFS_TYPE = "ext4"
"""
self.write_config(config)
@ -367,13 +368,17 @@ OVERLAYFS_ETC_DEVICE = "/dev/sda3"
@skipIfNotMachine("qemux86-64", "tests are qemux86-64 specific currently")
def test_sbin_init_preinit(self):
self.run_sbin_init(False)
self.run_sbin_init(False, "ext4")
@skipIfNotMachine("qemux86-64", "tests are qemux86-64 specific currently")
def test_sbin_init_original(self):
self.run_sbin_init(True)
self.run_sbin_init(True, "ext4")
def run_sbin_init(self, origInit):
@skipIfNotMachine("qemux86-64", "tests are qemux86-64 specific currently")
def test_sbin_init_read_only(self):
self.run_sbin_init(True, "squashfs")
def run_sbin_init(self, origInit, rootfsType):
"""
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
@ -384,7 +389,9 @@ OVERLAYFS_ETC_DEVICE = "/dev/sda3"
args = {
'OVERLAYFS_INIT_OPTION': "" if origInit else "init=/sbin/preinit",
'OVERLAYFS_ETC_USE_ORIG_INIT_NAME': int(origInit == True)
'OVERLAYFS_ETC_USE_ORIG_INIT_NAME': int(origInit == True),
'OVERLAYFS_ROOTFS_TYPE': rootfsType,
'OVERLAYFS_ETC_CREATE_MOUNT_DIRS': int(rootfsType == "ext4")
}
self.write_config(config.format(**args))
@ -437,7 +444,9 @@ IMAGE_INSTALL:append = " overlayfs-user"
args = {
'OVERLAYFS_INIT_OPTION': "",
'OVERLAYFS_ETC_USE_ORIG_INIT_NAME': 1
'OVERLAYFS_ETC_USE_ORIG_INIT_NAME': 1,
'OVERLAYFS_ROOTFS_TYPE': "ext4",
'OVERLAYFS_ETC_CREATE_MOUNT_DIRS': 1
}
self.write_config(config.format(**args))
@ -463,10 +472,14 @@ IMAGE_INSTALL:append = " overlayfs-user"
INIT_MANAGER = "systemd"
# enable overlayfs in the kernel
KERNEL_EXTRA_FEATURES:append = " features/overlayfs/overlayfs.scc"
KERNEL_EXTRA_FEATURES:append = " \
features/overlayfs/overlayfs.scc \
cfg/fs/squashfs.scc"
IMAGE_FSTYPES += "wic"
OVERLAYFS_INIT_OPTION = "{OVERLAYFS_INIT_OPTION}"
OVERLAYFS_ROOTFS_TYPE = "{OVERLAYFS_ROOTFS_TYPE}"
OVERLAYFS_ETC_CREATE_MOUNT_DIRS = "{OVERLAYFS_ETC_CREATE_MOUNT_DIRS}"
WKS_FILE = "overlayfs_etc.wks.in"
EXTRA_IMAGE_FEATURES += "read-only-rootfs"
@ -477,4 +490,13 @@ 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}"
ROOTFS_POSTPROCESS_COMMAND += "{OVERLAYFS_ROOTFS_TYPE}_rootfs"
ext4_rootfs() {{
}}
squashfs_rootfs() {{
mkdir -p ${{IMAGE_ROOTFS}}/data
}}
"""