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# ========================================================================== #
# #
# KVMD - The main PiKVM daemon. #
# #
# Copyright (C) 2018-2022 Maxim Devaev <[email protected]> #
# #
# This source file is partially based on python-watchdog module. #
# #
# This program is free software: you can redistribute it and/or modify #
# it under the terms of the GNU General Public License as published by #
# the Free Software Foundation, either version 3 of the License, or #
# (at your option) any later version. #
# #
# This program is distributed in the hope that it will be useful, #
# but WITHOUT ANY WARRANTY; without even the implied warranty of #
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the #
# GNU General Public License for more details. #
# #
# You should have received a copy of the GNU General Public License #
# along with this program. If not, see <https://www.gnu.org/licenses/>. #
# #
# ========================================================================== #
import ctypes
import ctypes.util
from ctypes import c_int
from ctypes import c_uint
from ctypes import c_uint32
from ctypes import c_char_p
from ctypes import c_void_p
# =====
def _load_libc() -> ctypes.CDLL:
path = ctypes.util.find_library("c")
if not path:
raise RuntimeError("Where is libc?")
assert path
lib = ctypes.CDLL(path)
for (name, restype, argtypes) in [
("inotify_init", c_int, []),
("inotify_add_watch", c_int, [c_int, c_char_p, c_uint32]),
("inotify_rm_watch", c_int, [c_int, c_uint32]),
("renameat2", c_int, [c_int, c_char_p, c_int, c_char_p, c_uint]),
("free", c_int, [c_void_p]),
]:
func = getattr(lib, name)
if not func:
raise RuntimeError(f"Where is libc.{name}?")
setattr(func, "restype", restype)
setattr(func, "argtypes", argtypes)
return lib
_libc = _load_libc()
# =====
get_errno = ctypes.get_errno
inotify_init = _libc.inotify_init
inotify_add_watch = _libc.inotify_add_watch
inotify_rm_watch = _libc.inotify_rm_watch
renameat2 = _libc.renameat2
free = _libc.free
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