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wic: implement reproducible Disk GUID

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GPT based disks have a disk guid apart from the 32-bit disk identifier.
This commit implements reproducible disk guid by using SOURCE_DATE_EPOCH (if available) value as a random seed

(From OE-Core rev: 150e079589e207fe174d2dceb40cd8f3d3972c5a)

Signed-off-by: Adithya Balakumar <Adithya.Balakumar@toshiba-tsip.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Adithya Balakumar
2024-01-31 16:33:55 +05:30
committed by Richard Purdie
parent 9c1d226fad
commit e685773513
1 changed files with 11 additions and 0 deletions
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11
scripts/lib/wic/plugins/imager/direct.py
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@@ -530,6 +530,16 @@ class PartitionedImage():
exec_native_cmd("parted -s %s mklabel %s" % (device, ptable_format),
self.native_sysroot)
def _write_disk_guid(self):
if self.ptable_format in ('gpt', 'gpt-hybrid'):
if os.getenv('SOURCE_DATE_EPOCH'):
self.disk_guid = uuid.UUID(int=int(os.getenv('SOURCE_DATE_EPOCH')))
else:
self.disk_guid = uuid.uuid4()
logger.debug("Set disk guid %s", self.disk_guid)
sfdisk_cmd = "sfdisk --disk-id %s %s" % (self.path, self.disk_guid)
exec_native_cmd(sfdisk_cmd, self.native_sysroot)
def create(self):
self._make_disk(self.path,
@@ -537,6 +547,7 @@ class PartitionedImage():
self.min_size)
self._write_identifier(self.path, self.identifier)
self._write_disk_guid()
if self.ptable_format == "gpt-hybrid":
mbr_path = self.path + ".mbr"