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Fallback to filename for PE format kernels

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Some ARM64 kernels ship as EFI executables, but it's
not obvious how to extract version numbers from those properly.
This commit is contained in:
Jarrod Johnson
2026-01-15 14:29:23 -05:00
parent a0a5887214
commit f8b8ce3847
1 changed files with 6 additions and 3 deletions
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9
imgutil/imgutil
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@@ -824,11 +824,14 @@ def version_sort(iterable):
def get_kern_version(filename):
with open(filename, 'rb') as kernfile:
checkgzip = kernfile.read(2)
if checkgzip == b'\x1f\x8b':
# gzipped... this would probably be aarch64
header = kernfile.read(2)
if header == b'\x1f\x8b':
# gzipped... we can't process this right now,
# assume the filename has the version embedded
return os.path.basename(filename).replace('vmlinuz-', '')
if header == b'MZ':
# PE format, no easy way to get version, assume filename has it
return os.path.basename(filename).replace('vmlinuz-', '')
kernfile.seek(0x20e)
offset = struct.unpack('<H', kernfile.read(2))[0] + 0x200
kernfile.seek(offset)