src/device.h

   1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
   2
   3 #ifndef foodevicehfoo
   4 #define foodevicehfoo
   5
   6 /***
   7   This file is part of systemd.
   8
   9   Copyright 2010 Lennart Poettering
  10
  11   systemd is free software; you can redistribute it and/or modify it
  12   under the terms of the GNU General Public License as published by
  13   the Free Software Foundation; either version 2 of the License, or
  14   (at your option) any later version.
  15
  16   systemd is distributed in the hope that it will be useful, but
  17   WITHOUT ANY WARRANTY; without even the implied warranty of
  18   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  19   General Public License for more details.
  20
  21   You should have received a copy of the GNU General Public License
  22   along with systemd; If not, see <http://www.gnu.org/licenses/>.
  23 ***/
  24
  25 typedef struct Device Device;
  26
  27 #include "unit.h"
  28
  29 /* We simply watch devices, we cannot plug/unplug them. That
  30  * simplifies the state engine greatly */
  31 typedef enum DeviceState {
  32         DEVICE_DEAD,
  33         DEVICE_PLUGGED,
  34         _DEVICE_STATE_MAX,
  35         _DEVICE_STATE_INVALID = -1
  36 } DeviceState;
  37
  38 struct Device {
  39         Meta meta;
  40
  41         char *sysfs;
  42
  43         /* In order to be able to distuingish dependencies on
  44         different device nodes we might end up creating multiple
  45         devices for the same sysfs path. We chain them up here. */
  46
  47         LIST_FIELDS(struct Device, same_sysfs);
  48
  49         DeviceState state;
  50 };
  51
  52 extern const UnitVTable device_vtable;
  53
  54 void device_fd_event(Manager *m, int events);
  55
  56 const char* device_state_to_string(DeviceState i);
  57 DeviceState device_state_from_string(const char *s);
  58
  59 #endif