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| author |   Adithya Balakumar <adithya.balakumar@toshiba-tsip.com> | 2024-01-31 16:33:55 +0530 |
|---|---|---|
| committer |   Richard Purdie <richard.purdie@linuxfoundation.org> | 2024-02-08 10:53:03 +0000 |
| commit | 150e079589e207fe174d2dceb40cd8f3d3972c5a (patch) | |
| tree | 702057f889cb9ab1a4f99f0fbbc9217898373c50 /scripts | |
| parent | 2cfad933c334b3d7f49bc8ca62f9d443428d4523 (diff) | |
| download | openembedded-core-contrib-150e079589e207fe174d2dceb40cd8f3d3972c5a.tar.gz | |
wic: implement reproducible Disk GUID
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
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>
Diffstat (limited to 'scripts')
| -rw-r--r-- | scripts/lib/wic/plugins/imager/direct.py | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/scripts/lib/wic/plugins/imager/direct.py b/scripts/lib/wic/plugins/imager/direct.py index 9b619e41c1..a1d152659b 100644 --- a/scripts/lib/wic/plugins/imager/direct.py +++ b/scripts/lib/wic/plugins/imager/direct.py @@ -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" |