c57da5722f
Explain the concept and reason behind the grub2 core as well as the details behind the selection of the core modules that get included. Also elaborate a bit on the MBR gap. For more details about this see https://en.wikipedia.org/wiki/GNU_GRUB#Version_2_(GRUB_2) NB: This commit also changes the order of the grub modules, which in turn changes the layout of the core.img and thus the hash value used in the test; adapt those value to reflect the changed core.img.
151 lines
6.5 KiB
Python
151 lines
6.5 KiB
Python
|
|
import contextlib
|
|
import glob
|
|
import hashlib
|
|
import json
|
|
import os
|
|
import subprocess
|
|
import tempfile
|
|
import time
|
|
|
|
from . import osbuildtest
|
|
|
|
|
|
class TestAssemblers(osbuildtest.TestCase):
|
|
@classmethod
|
|
def setUpClass(cls):
|
|
super().setUpClass()
|
|
subprocess.run(["modprobe", "nbd"], check=True)
|
|
|
|
def run_assembler(self, name, options):
|
|
with open("test/pipelines/f30-base.json") as f:
|
|
base = json.load(f)
|
|
pipeline = dict(base, assembler={ "name": name, "options": options })
|
|
return self.run_osbuild("-", input=json.dumps(pipeline), sources="test/pipelines/sources.json")
|
|
|
|
def assertImageFile(self, filename, fmt, expected_size=None):
|
|
info = json.loads(subprocess.check_output(["qemu-img", "info", "--output", "json", filename]))
|
|
self.assertEqual(info["format"], fmt)
|
|
self.assertEqual(info["virtual-size"], expected_size)
|
|
|
|
def assertFilesystem(self, device, uuid, fstype, tree_id):
|
|
output = subprocess.check_output(["blkid", "--output", "export", device], encoding="utf-8")
|
|
blkid = dict(line.split("=") for line in output.strip().split("\n"))
|
|
self.assertEqual(blkid["UUID"], uuid)
|
|
self.assertEqual(blkid["TYPE"],fstype)
|
|
|
|
with mount(device) as target_tree:
|
|
tree = f"{self.store}/refs/{tree_id}"
|
|
diff = json.loads(subprocess.check_output(["./tree-diff", tree, target_tree]))
|
|
self.assertEqual(diff["added_files"], ["/lost+found"])
|
|
self.assertEqual(diff["deleted_files"], [])
|
|
self.assertEqual(diff["differences"], {})
|
|
|
|
def assertGRUB2(self, device, l1hash, l2hash, size):
|
|
m1 = hashlib.sha256()
|
|
m2 = hashlib.sha256()
|
|
with open(device, "rb") as d:
|
|
sectors = d.read(size)
|
|
self.assertEqual(len(sectors), size)
|
|
m1.update(sectors[:440])
|
|
m2.update(sectors[512:size])
|
|
self.assertEqual(m1.hexdigest(), l1hash)
|
|
self.assertEqual(m2.hexdigest(), l2hash)
|
|
|
|
def assertPartitionTable(self, device, label, uuid, n_partitions, boot_partition=None):
|
|
sfdisk = json.loads(subprocess.check_output(["sfdisk", "--json", device]))
|
|
ptable = sfdisk["partitiontable"]
|
|
|
|
self.assertEqual(ptable["label"], label)
|
|
self.assertEqual(ptable["id"][2:], uuid[:8])
|
|
self.assertEqual(len(ptable["partitions"]), n_partitions)
|
|
|
|
if boot_partition:
|
|
bootable = [p.get("bootable", False) for p in ptable["partitions"]]
|
|
self.assertEqual(bootable.count(True), 1)
|
|
self.assertEqual(bootable.index(True) + 1, boot_partition)
|
|
|
|
def test_rawfs(self):
|
|
options = {
|
|
"filename": "image.raw",
|
|
"root_fs_uuid": "016a1cda-5182-4ab3-bf97-426b00b74eb0",
|
|
"size": 2 * 1024 * 1024 * 1024
|
|
}
|
|
tree_id, output_id = self.run_assembler("org.osbuild.rawfs", options)
|
|
image = f"{self.store}/refs/{output_id}/image.raw"
|
|
self.assertImageFile(image, "raw", options["size"])
|
|
self.assertFilesystem(image, options["root_fs_uuid"], "ext4", tree_id)
|
|
|
|
def test_qemu(self):
|
|
for fmt in ["raw", "raw.xz", "qcow2", "vmdk", "vdi"]:
|
|
with self.subTest(fmt=fmt):
|
|
print(f" {fmt}", flush=True)
|
|
options = {
|
|
"format": fmt,
|
|
"filename": f"image.{fmt}",
|
|
"ptuuid": "b2c09a39-db93-44c5-846a-81e06b1dc162",
|
|
"root_fs_uuid": "aff010e9-df95-4f81-be6b-e22317251033",
|
|
"size": 2 * 1024 * 1024 * 1024
|
|
}
|
|
tree_id, output_id = self.run_assembler("org.osbuild.qemu", options)
|
|
image = f"{self.store}/refs/{output_id}/image.{fmt}"
|
|
if fmt == "raw.xz":
|
|
subprocess.run(["unxz", "--keep", "--force", image], check=True)
|
|
image = image[:-3]
|
|
fmt = "raw"
|
|
self.assertImageFile(image, fmt, options["size"])
|
|
with nbd_connect(image) as device:
|
|
self.assertPartitionTable(device, "dos", options["ptuuid"], 1, boot_partition=1)
|
|
self.assertGRUB2(device,
|
|
"26e3327c6b5ac9b5e21d8b86f19ff7cb4d12fb2d0406713f936997d9d89de3ee",
|
|
"18031c9465e3f9ccb9aeb9c8e59dec6b82e91376e2628c8100b5461af62ad67c",
|
|
1024 * 1024)
|
|
self.assertFilesystem(device + "p1", options["root_fs_uuid"], "ext4", tree_id)
|
|
|
|
def test_tar(self):
|
|
cases = [
|
|
("tree.tar.gz", None, ["application/x-tar"]),
|
|
("tree.tar.gz", "gzip", ["application/x-gzip", "application/gzip"])
|
|
]
|
|
for filename, compression, expected_mimetypes in cases:
|
|
options = {
|
|
"filename": filename,
|
|
"compression": compression
|
|
}
|
|
tree_id, output_id = self.run_assembler("org.osbuild.tar", options)
|
|
image = f"{self.store}/refs/{output_id}/{filename}"
|
|
output = subprocess.check_output(["file", "--mime-type", image], encoding="utf-8")
|
|
_, mimetype = output.strip().split(": ") # "filename: mimetype"
|
|
self.assertIn(mimetype, expected_mimetypes)
|
|
|
|
|
|
@contextlib.contextmanager
|
|
def mount(device):
|
|
with tempfile.TemporaryDirectory() as mountpoint:
|
|
subprocess.run(["mount", "-o", "ro", device, mountpoint], check=True)
|
|
try:
|
|
yield mountpoint
|
|
finally:
|
|
subprocess.run(["umount", "--lazy", mountpoint], check=True)
|
|
|
|
|
|
@contextlib.contextmanager
|
|
def nbd_connect(image):
|
|
for device in glob.glob("/dev/nbd*"):
|
|
r = subprocess.run(["qemu-nbd", "--connect", device, "--read-only", image], check=False).returncode
|
|
if r == 0:
|
|
try:
|
|
# qemu-nbd doesn't wait for the device to be ready
|
|
for _ in range(100):
|
|
if subprocess.run(["nbd-client", "--check", device], check=False, stdout=subprocess.DEVNULL).returncode == 0:
|
|
break
|
|
time.sleep(0.2)
|
|
|
|
yield device
|
|
finally:
|
|
# qemu-nbd doesn't wait until the device is released. nbd-client does
|
|
subprocess.run(["qemu-nbd", "--disconnect", device], check=True, stdout=subprocess.DEVNULL)
|
|
subprocess.run(["nbd-client", "--disconnect", device], check=False, stdout=subprocess.DEVNULL)
|
|
break
|
|
else:
|
|
raise RuntimeError("no free network block device")
|