/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ #pragma once /*** This file is part of systemd. Copyright 2010 Lennart Poettering systemd is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. systemd 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 Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with systemd; If not, see <http://www.gnu.org/licenses/>. ***/ typedef struct Device Device; /* We simply watch devices, we cannot plug/unplug them. That * simplifies the state engine greatly */ typedef enum DeviceState { DEVICE_DEAD, DEVICE_TENTATIVE, /* mounted or swapped, but not (yet) announced by udev */ DEVICE_PLUGGED, /* announced by udev */ _DEVICE_STATE_MAX, _DEVICE_STATE_INVALID = -1 } DeviceState; typedef enum DeviceFound { DEVICE_NOT_FOUND = 0, DEVICE_FOUND_UDEV = 1, DEVICE_FOUND_MOUNT = 2, DEVICE_FOUND_SWAP = 4, } DeviceFound; struct Device { Unit meta; char *sysfs; DeviceFound found; /* In order to be able to distinguish dependencies on different device nodes we might end up creating multiple devices for the same sysfs path. We chain them up here. */ LIST_FIELDS(struct Device, same_sysfs); DeviceState state, deserialized_state; }; extern const UnitVTable device_vtable; const char* device_state_to_string(DeviceState i) _const_; DeviceState device_state_from_string(const char *s) _pure_; int device_found_node(Manager *m, const char *node, bool add, DeviceFound found, bool now);