mirror of
https://github.com/mofeng-git/One-KVM.git
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91 lines
3.3 KiB
Python
91 lines
3.3 KiB
Python
# ========================================================================== #
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# #
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# KVMD - The main PiKVM daemon. #
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# #
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# Copyright (C) 2018-2022 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 os
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import shutil
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import subprocess
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from ... import fstab
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# =====
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def _log(msg: str) -> None:
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print(msg, file=sys.stderr)
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def _remount(path: str, rw: bool) -> None:
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mode = ("rw" if rw else "ro")
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_log(f"Remounting {path} to {mode.upper()}-mode ...")
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try:
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subprocess.check_call(["/bin/mount", "--options", f"remount,{mode}", path])
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except subprocess.CalledProcessError as err:
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raise SystemExit(f"Can't remount: {err}")
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def _mkdir(path: str) -> None:
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if not os.path.exists(path):
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_log(f"MKDIR --- {path}")
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try:
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os.mkdir(path)
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except Exception as err:
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raise SystemExit(f"Can't create directory: {err}")
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def _chown(path: str, user: str) -> None:
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_log(f"CHOWN --- {user} - {path}")
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try:
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shutil.chown(path, user)
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except Exception as err:
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raise SystemExit(f"Can't change ownership: {err}")
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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"Usage: {sys.argv[0]} [ro|rw]")
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finder = None
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dirs: list[str] = []
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app = os.path.basename(sys.argv[0])
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if app == "kvmd-helper-otgmsd-remount":
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finder = fstab.find_msd
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dirs = ["images", "meta"]
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elif app == "kvmd-helper-pst-remount":
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finder = fstab.find_pst
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dirs = ["data"]
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else:
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raise SystemExit("Unknown application target")
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rw = (sys.argv[1] == "rw")
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assert finder is not None
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part = finder()
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_remount(part.mount_path, rw)
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if rw and part.root_path:
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for name in dirs:
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path = os.path.join(part.root_path, name)
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_mkdir(path)
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if part.user:
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_chown(path, part.user)
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_log(f"Storage in the {'RW' if rw else 'RO'}-mode now")
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