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/*-*- 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);
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