mirror of
https://github.com/mofeng-git/One-KVM.git
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65 lines
2.8 KiB
Python
65 lines
2.8 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 subprocess
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# ====
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_MOUNT_PATH = "/bin/mount"
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_FSTAB_PATH = "/etc/fstab"
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_OPTION = "X-kvmd.otg-msd"
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# =====
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def _find_mountpoint() -> str:
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with open(_FSTAB_PATH) as fstab_file:
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for line in fstab_file.read().split("\n"):
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line = line.strip()
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if line and not line.startswith("#"):
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parts = line.split()
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if len(parts) == 6:
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options = parts[3].split(",")
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if _OPTION in options:
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return parts[1]
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raise SystemExit(f"Can't find {_OPTION!r} mountpoint in {_FSTAB_PATH}")
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def _remount(path: str, ro: bool) -> None:
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try:
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subprocess.check_call([
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_MOUNT_PATH,
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"--options",
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f"remount,{'ro' if ro else 'rw'}",
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path,
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])
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except subprocess.CalledProcessError as err:
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raise SystemExit(str(err)) from None
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# =====
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def main() -> None:
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if len(sys.argv) != 2 or sys.argv[1] not in ["ro", "rw"]:
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raise SystemExit(f"This program will remount a first volume marked by {_OPTION!r} option in {_FSTAB_PATH}\n\n"
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f"Usage: python -m kvmd.helpers.otgmsd.remount [-h|--help|ro|rw]")
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_remount(_find_mountpoint(), (sys.argv[1] == "ro"))
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