b38dea0597
Share Gaia assets and adapters, keep private profiles and development documents local, and update both public READMEs.
41 lines
2 KiB
Python
41 lines
2 KiB
Python
#!/usr/bin/python3
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# SPDX-License-Identifier: MPL-2.0
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"""Exercise both directions of FunctionFS through the guest's dummy USB controller."""
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import json
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import os
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from pathlib import Path
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import subprocess
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import time
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from usb_protocol import exchange
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def main():
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if os.getpid()==1 or 'tundra.usb=1' not in Path('/proc/cmdline').read_text():
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raise SystemExit('Guest USB test requires its explicit VM kernel flag')
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for module in ('dummy_hcd','libcomposite','usb_f_fs','usbcore'):
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subprocess.run(['modprobe',module],check=True)
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log=Path('/var/log/tundra/usb.log').open('w')
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proc=subprocess.Popen(['unshare','--mount','--pid','--fork','/opt/tundra/usb-init'],stdout=log,stderr=subprocess.STDOUT)
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device=None
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for _ in range(200):
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for p in Path('/sys/bus/usb/devices').iterdir():
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try:
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if (p/'serial').read_text().strip()=='TUNDRA-DIAG' and (p/'idVendor').read_text().strip()=='1d6b':
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device=Path('/dev/bus/usb')/f'{int((p/"busnum").read_text()):03d}'/f'{int((p/"devnum").read_text()):03d}'
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if device.exists():break
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except (FileNotFoundError,NotADirectoryError):pass
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if device and device.exists():break
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if proc.poll() is not None:raise RuntimeError('Diagnostic process exited')
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time.sleep(.1)
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else:raise RuntimeError('USB gadget did not enumerate: '+Path('/var/log/tundra/usb.log').read_text())
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results=exchange(device,('status','version','mounts','forbidden'))
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assert 'readOnly=true' in results['status']
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assert 'Linux version' in results['version']
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assert 'configfs' in results['mounts']
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assert results['forbidden']=='ERROR unsupported command\nEND\n'
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report={'passed':True,'scope':'dummy_hcd x86_64 guest; not physical sargo USB', 'results':results}
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Path('/var/log/tundra/usb-test.json').write_text(json.dumps(report,indent=2)+'\n')
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print('TUNDRA_USB_TEST '+json.dumps(report),flush=True)
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if __name__=='__main__':main()
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