sunfish-admin
12d2179c20
Ship Magisk like GOLDEN; KernelSU optional recycle only; parallel to sunfish-a16-rom standby.
52 lines
1.8 KiB
Python
52 lines
1.8 KiB
Python
#!/usr/bin/env python3
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"""Check a Linux module's versioned imports against its target Module.symvers.
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Requires kmod's modprobe. A pass checks symbol CRCs only, not complete ABI,
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vermagic, CFI, signatures, firmware or hardware behaviour.
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"""
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import argparse
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from pathlib import Path
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import subprocess
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import sys
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def main():
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parser = argparse.ArgumentParser(description=__doc__)
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parser.add_argument("symvers", type=Path)
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parser.add_argument("modules", nargs="+", type=Path)
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args = parser.parse_args()
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exports = {}
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for line in args.symvers.read_text().splitlines():
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fields = line.split()
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if len(fields) >= 2:
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exports[fields[1]] = int(fields[0], 16)
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if not exports:
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parser.error("Module.symvers contains no exports")
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failed = False
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for module in args.modules:
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result = subprocess.run(
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["modprobe", "--show-modversions", str(module.resolve())],
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text=True, capture_output=True,
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)
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if result.returncode or not result.stdout.strip():
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print(f"UNVERIFIED {module}: {result.stderr.strip() or 'no versioned imports'}")
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failed = True
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continue
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mismatch = 0
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imports = result.stdout.splitlines()
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for line in imports:
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crc, symbol = line.split()
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expected = exports.get(symbol)
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if expected != int(crc, 16):
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mismatch += 1
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target = "missing export" if expected is None else f"0x{expected:08x}"
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print(f" {symbol}: module={crc}, kernel={target}")
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failed |= bool(mismatch)
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print(f"{'FAIL' if mismatch else 'PASS'} {module}: "
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f"{mismatch}/{len(imports)} incompatible versioned imports")
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return int(failed)
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if __name__ == "__main__":
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sys.exit(main())
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