mirror of
https://github.com/mofeng-git/One-KVM.git
synced 2025-12-12 17:20:30 +08:00
120 lines
4.7 KiB
Python
120 lines
4.7 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) 2018-2021 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 os
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import asyncio
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from typing import Optional
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from ...logging import get_logger
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from ...inotify import InotifyMask
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from ...inotify import Inotify
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from ... import env
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from ... import aiotools
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from . import BaseUserGpioDriver
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# =====
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class Plugin(BaseUserGpioDriver):
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def __init__(
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self,
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instance_name: str,
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notifier: aiotools.AioNotifier,
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udc: str, # XXX: Not from options, see /kvmd/apps/kvmd/__init__.py for details
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) -> None:
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super().__init__(instance_name, notifier)
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self.__udc = udc
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def register_input(self, pin: int, debounce: float) -> None:
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_ = pin
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_ = debounce
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def register_output(self, pin: int, initial: Optional[bool]) -> None:
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_ = pin
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_ = initial
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def prepare(self) -> None:
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candidates = sorted(os.listdir(f"{env.SYSFS_PREFIX}/sys/class/udc"))
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if not self.__udc:
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if len(candidates) == 0:
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raise RuntimeError("Can't find any UDC")
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self.__udc = candidates[0]
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elif self.__udc not in candidates:
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raise RuntimeError(f"Can't find selected UDC: {self.__udc}")
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get_logger().info("Using UDC %s", self.__udc)
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async def run(self) -> None:
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logger = get_logger(0)
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while True:
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try:
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while True:
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await self._notifier.notify()
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if os.path.isdir(self.__get_driver_path()):
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break
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await asyncio.sleep(5)
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with Inotify() as inotify:
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inotify.watch(self.__get_driver_path(), InotifyMask.ALL_MODIFY_EVENTS)
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await self._notifier.notify()
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while True:
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need_restart = False
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need_notify = False
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for event in (await inotify.get_series(timeout=1)):
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need_notify = True
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if event.mask & (InotifyMask.DELETE_SELF | InotifyMask.MOVE_SELF | InotifyMask.UNMOUNT):
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logger.warning("Got fatal inotify event: %s; reinitializing OTG-bind ...", event)
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need_restart = True
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break
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if need_restart:
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break
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if need_notify:
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await self._notifier.notify()
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except Exception:
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logger.exception("Unexpected OTG-bind watcher error")
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def cleanup(self) -> None:
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pass
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async def read(self, pin: int) -> bool:
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_ = pin
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return os.path.islink(self.__get_driver_path(self.__udc))
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async def write(self, pin: int, state: bool) -> None:
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_ = pin
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with open(self.__get_driver_path("bind" if state else "unbind"), "w") as ctl_file:
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ctl_file.write(f"{self.__udc}\n")
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def __get_driver_path(self, name: str="") -> str:
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path = f"{env.SYSFS_PREFIX}/sys/bus/platform/drivers/dwc2"
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return (os.path.join(path, name) if name else path)
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def __str__(self) -> str:
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return f"GPIO({self._instance_name})"
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__repr__ = __str__
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