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https://github.com/mofeng-git/One-KVM.git
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55 lines
2.5 KiB
Python
55 lines
2.5 KiB
Python
# ========================================================================== #
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# #
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# KVMD - The main Pi-KVM daemon. #
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# #
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# Copyright (C) 2018 Maxim Devaev <mdevaev@gmail.com> #
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# #
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# This program is free software: you can redistribute it and/or modify #
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# it under the terms of the GNU General Public License as published by #
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# the Free Software Foundation, either version 3 of the License, or #
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# (at your option) any later version. #
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# #
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# This program is distributed in the hope that it will be useful, #
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# but WITHOUT ANY WARRANTY; without even the implied warranty of #
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the #
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# GNU General Public License for more details. #
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# #
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# You should have received a copy of the GNU General Public License #
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# along with this program. If not, see <https://www.gnu.org/licenses/>. #
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# #
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# ========================================================================== #
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import sys
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import signal
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import psutil
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# =====
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_PROCESS_NAME = "file-storage"
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# =====
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def _unlock() -> None:
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# https://github.com/torvalds/linux/blob/3039fad/drivers/usb/gadget/function/f_mass_storage.c#L2924
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found = False
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for proc in psutil.process_iter():
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attrs = proc.as_dict(attrs=["name", "exe"])
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if attrs.get("name") == _PROCESS_NAME and not attrs.get("exe"):
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try:
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proc.send_signal(signal.SIGUSR1)
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found = True
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except Exception as err:
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raise SystemExit(f"Can't send SIGUSR1 to MSD kernel thread with pid={attrs['pid']}: {err}")
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if not found:
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raise SystemExit(f"Can't find MSD kernel thread {_PROCESS_NAME!r}")
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# =====
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def main() -> None:
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if len(sys.argv) != 2 or sys.argv[1] != "unlock":
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raise SystemExit(f"This program interrupts all IO operations performed by OTG MSD.\n\n"
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f"Usage: python -m kvmd.helpers.otgmsd.unlock [-h|--help|unlock]")
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_unlock()
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