src/core/device.h

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2 #pragma once
   3
   4 /***
   5   This file is part of systemd.
   6
   7   Copyright 2010 Lennart Poettering
   8 ***/
   9
  10 typedef struct Device Device;
  11
  12 typedef enum DeviceFound {
  13         DEVICE_NOT_FOUND     = 0,
  14         DEVICE_FOUND_UDEV    = 1 << 1,
  15         DEVICE_FOUND_UDEV_DB = 1 << 2,
  16         DEVICE_FOUND_MOUNT   = 1 << 3,
  17         DEVICE_FOUND_SWAP    = 1 << 4,
  18 } DeviceFound;
  19
  20 struct Device {
  21         Unit meta;
  22
  23         char *sysfs;
  24         DeviceFound found;
  25
  26         /* In order to be able to distinguish dependencies on
  27         different device nodes we might end up creating multiple
  28         devices for the same sysfs path. We chain them up here. */
  29         LIST_FIELDS(struct Device, same_sysfs);
  30
  31         DeviceState state, deserialized_state;
  32
  33         bool bind_mounts;
  34 };
  35
  36 extern const UnitVTable device_vtable;
  37
  38 int device_found_node(Manager *m, const char *node, bool add, DeviceFound found, bool now);
  39 bool device_shall_be_bound_by(Unit *device, Unit *u);