bolt-device.c 28.5 KB
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/*
 * Copyright © 2017 Red Hat, Inc
 *
 * This program 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.
 *
 * This library 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 this library. If not, see <http://www.gnu.org/licenses/>.
 *
 * Authors:
 *       Christian J. Kellner <christian@kellner.me>
 */

#include "config.h"

#include "bolt-device.h"
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#include "bolt-enums.h"
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#include "bolt-error.h"
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#include "bolt-io.h"
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#include "bolt-log.h"
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#include "bolt-manager.h"
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#include "bolt-names.h"
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#include "bolt-store.h"
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#include "bolt-str.h"
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#include "bolt-sysfs.h"
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#include "bolt-time.h"
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#include <dirent.h>
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#include <libudev.h>

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/* dbus property setter */
static gboolean handle_set_label (BoltExported *obj,
                                  const char   *name,
                                  const GValue *value,
                                  GError      **error);

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/* dbus method calls */
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static gboolean    handle_authorize (BoltExported          *object,
                                     GVariant              *params,
                                     GDBusMethodInvocation *invocation);
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struct _BoltDevice
{
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  BoltExported object;
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  /* device props */
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  char          *dbus_path;
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  char          *uid;
  char          *name;
  char          *vendor;
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  BoltDeviceType type;
  BoltStatus     status;
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  /* when device is attached */
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  char        *syspath;
  BoltSecurity security;
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  char        *parent;
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  guint64      conntime;
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  guint64      authtime;
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  /* when device is stored */
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  BoltStore   *store;
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  BoltPolicy   policy;
  BoltKeyState key;
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  guint64      storetime;
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  char        *label;
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};


enum {
  PROP_0,

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  PROP_STORE,

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  /* exported properties start here, */
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  PROP_UID,
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  PROP_NAME,
  PROP_VENDOR,
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  PROP_TYPE,
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  PROP_STATUS,
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  PROP_PARENT,
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  PROP_SYSFS,
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  PROP_SECURITY,
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  PROP_CONNTIME,
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  PROP_AUTHTIME,
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  PROP_STORED,
  PROP_POLICY,
  PROP_HAVE_KEY,
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  PROP_STORETIME,
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  PROP_LABEL,
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  PROP_LAST,
  PROP_EXPORTED = PROP_UID
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};

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static GParamSpec *props[PROP_LAST] = {NULL, };
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enum {
  SIGNAL_STATUS_CHANGED,
  SIGNAL_LAST
};

static guint signals[SIGNAL_LAST] = {0};

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G_DEFINE_TYPE (BoltDevice,
               bolt_device,
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               BOLT_TYPE_EXPORTED)
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static void
bolt_device_finalize (GObject *object)
{
  BoltDevice *dev = BOLT_DEVICE (object);

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  g_clear_object (&dev->store);

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  g_free (dev->dbus_path);

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  g_free (dev->uid);
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  g_free (dev->name);
  g_free (dev->vendor);
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  g_free (dev->parent);
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  g_free (dev->syspath);
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  g_free (dev->label);
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  G_OBJECT_CLASS (bolt_device_parent_class)->finalize (object);
}

static void
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bolt_device_init (BoltDevice *dev)
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{
}

static void
bolt_device_get_property (GObject    *object,
                          guint       prop_id,
                          GValue     *value,
                          GParamSpec *pspec)
{
  BoltDevice *dev = BOLT_DEVICE (object);

  switch (prop_id)
    {
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    case PROP_STORE:
      g_value_set_object (value, dev->store);
      break;

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    case PROP_UID:
      g_value_set_string (value, dev->uid);
      break;

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    case PROP_NAME:
      g_value_set_string (value, dev->name);
      break;

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    case PROP_TYPE:
      g_value_set_uint (value, dev->type);
      break;

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    case PROP_VENDOR:
      g_value_set_string (value, dev->vendor);
      break;

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    case PROP_STATUS:
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      g_value_set_enum (value, dev->status);
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      break;

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    case PROP_PARENT:
      g_value_set_string (value, dev->parent);
      break;

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    case PROP_SYSFS:
      g_value_set_string (value, dev->syspath);
      break;

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    case PROP_SECURITY:
      g_value_set_uint (value, dev->security);
      break;

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    case PROP_CONNTIME:
      g_value_set_uint64 (value, dev->conntime);
      break;

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    case PROP_AUTHTIME:
      g_value_set_uint64 (value, dev->authtime);
      break;

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    case PROP_STORED:
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      g_value_set_boolean (value, dev->store != NULL);
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      break;

    case PROP_POLICY:
      g_value_set_uint (value, dev->policy);
      break;

    case PROP_HAVE_KEY:
      g_value_set_uint (value, dev->key);
      break;

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    case PROP_STORETIME:
      g_value_set_uint64 (value, dev->storetime);
      break;

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    case PROP_LABEL:
      g_value_set_string (value, dev->label);
      break;

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    default:
      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
    }
}

static void
bolt_device_set_property (GObject      *object,
                          guint         prop_id,
                          const GValue *value,
                          GParamSpec   *pspec)
{
  BoltDevice *dev = BOLT_DEVICE (object);

  switch (prop_id)
    {
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    case PROP_STORE:
      dev->store = g_value_dup_object (value);
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      g_object_notify_by_pspec (object, props[PROP_STORED]);
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      break;

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    case PROP_UID:
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      g_return_if_fail (dev->uid == NULL);
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      dev->uid = g_value_dup_string (value);
      break;

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    case PROP_NAME:
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      g_clear_pointer (&dev->name, g_free);
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      dev->name = g_value_dup_string (value);
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      break;

    case PROP_VENDOR:
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      g_clear_pointer (&dev->vendor, g_free);
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      dev->vendor = g_value_dup_string (value);
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      break;

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    case PROP_TYPE:
      dev->type = g_value_get_uint (value);
      break;

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    case PROP_STATUS:
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      {
        BoltStatus old = dev->status;
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        BoltStatus now = g_value_get_enum (value);
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        if (old == now)
          break;

        dev->status = now;
        g_signal_emit (dev,
                       signals[SIGNAL_STATUS_CHANGED],
                       0,
                       old);
        break;
      }
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    case PROP_PARENT:
      g_clear_pointer (&dev->parent, g_free);
      dev->parent = g_value_dup_string (value);
      break;

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    case PROP_SYSFS:
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      g_clear_pointer (&dev->syspath, g_free);
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      dev->syspath = g_value_dup_string (value);
      break;
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    case PROP_SECURITY:
      dev->security = g_value_get_uint (value);
      break;
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    case PROP_CONNTIME:
      dev->conntime = g_value_get_uint64 (value);
      break;

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    case PROP_AUTHTIME:
      dev->authtime = g_value_get_uint64 (value);
      break;

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    case PROP_POLICY:
      dev->policy = g_value_get_uint (value);
      break;

    case PROP_HAVE_KEY:
      dev->key = g_value_get_uint (value);
      break;

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    case PROP_STORETIME:
      dev->storetime = g_value_get_uint64 (value);
      break;

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    case PROP_LABEL:
      g_clear_pointer (&dev->label, g_free);
      dev->label = g_value_dup_string (value);
      break;

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    default:
      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
    }
}


static void
bolt_device_class_init (BoltDeviceClass *klass)
{
  GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
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  BoltExportedClass *exported_class = BOLT_EXPORTED_CLASS (klass);
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  gobject_class->finalize = bolt_device_finalize;

  gobject_class->get_property = bolt_device_get_property;
  gobject_class->set_property = bolt_device_set_property;

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  props[PROP_STORE] =
    g_param_spec_object ("store",
                         NULL, NULL,
                         BOLT_TYPE_STORE,
                         G_PARAM_READWRITE |
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                         G_PARAM_STATIC_STRINGS);
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  props[PROP_UID] =
    g_param_spec_string ("uid",
                         "Uid", NULL,
                         NULL,
                         G_PARAM_READWRITE |
                         G_PARAM_CONSTRUCT_ONLY |
                         G_PARAM_STATIC_STRINGS);
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  props[PROP_NAME] =
    g_param_spec_string ("name",
                         "Name", NULL,
                         NULL,
                         G_PARAM_READWRITE |
                         G_PARAM_CONSTRUCT_ONLY |
                         G_PARAM_STATIC_STRINGS);
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  props[PROP_VENDOR] =
    g_param_spec_string ("vendor",
                         "Vendor", NULL,
                         NULL,
                         G_PARAM_READWRITE |
                         G_PARAM_CONSTRUCT_ONLY |
                         G_PARAM_STATIC_STRINGS);

  props[PROP_TYPE] =
    g_param_spec_uint ("type",
                       "Type", NULL,
                       BOLT_DEVICE_HOST,
                       BOLT_DEVICE_PERIPHERAL,
                       BOLT_DEVICE_PERIPHERAL,
                       G_PARAM_READWRITE |
                       G_PARAM_CONSTRUCT_ONLY |
                       G_PARAM_STATIC_STRINGS);

  props[PROP_STATUS] =
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    g_param_spec_enum ("status",
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                       "Status", NULL,
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                       BOLT_TYPE_STATUS,
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                       BOLT_STATUS_DISCONNECTED,
                       G_PARAM_READWRITE |
                       G_PARAM_STATIC_STRINGS);

  props[PROP_PARENT] =
    g_param_spec_string ("parent",
                         "Parent", NULL,
                         NULL,
                         G_PARAM_READWRITE |
                         G_PARAM_STATIC_STRINGS);
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  props[PROP_SYSFS] =
    g_param_spec_string ("sysfs-path",
                         "SysfsPath", NULL,
                         NULL,
                         G_PARAM_READWRITE |
                         G_PARAM_STATIC_STRINGS);
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  props[PROP_SECURITY] =
    g_param_spec_uint ("security",
                       "Security", NULL,
                       0,
                       BOLT_SECURITY_LAST,
                       BOLT_SECURITY_NONE,
                       G_PARAM_READWRITE |
                       G_PARAM_STATIC_STRINGS);

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  props[PROP_CONNTIME] =
    g_param_spec_uint64 ("conntime",
                         "ConnectTime", NULL,
                         0, G_MAXUINT64, 0,
                         G_PARAM_READWRITE |
                         G_PARAM_STATIC_STRINGS);

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  props[PROP_AUTHTIME] =
    g_param_spec_uint64 ("authtime",
                         "AuthorizeTime", NULL,
                         0, G_MAXUINT64, 0,
                         G_PARAM_READWRITE |
                         G_PARAM_STATIC_STRINGS);

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  props[PROP_STORED] =
    g_param_spec_boolean ("stored",
                          "Stored", NULL,
                          FALSE,
                          G_PARAM_READWRITE |
                          G_PARAM_STATIC_STRINGS);

  props[PROP_POLICY] =
    g_param_spec_uint ("policy",
                       "Policy", NULL,
                       0,
                       BOLT_POLICY_LAST,
                       BOLT_POLICY_DEFAULT,
                       G_PARAM_READWRITE |
                       G_PARAM_STATIC_STRINGS);

  props[PROP_HAVE_KEY] =
    g_param_spec_uint ("key",
                       "Key", NULL,
                       0,
                       BOLT_KEY_NEW,
                       BOLT_KEY_MISSING,
                       G_PARAM_READWRITE |
                       G_PARAM_STATIC_STRINGS);
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  props[PROP_STORETIME] =
    g_param_spec_uint64 ("storetime",
                         "StoreTime", NULL,
                         0, G_MAXUINT64, 0,
                         G_PARAM_READWRITE |
                         G_PARAM_STATIC_STRINGS);

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  props[PROP_LABEL] =
    g_param_spec_string ("label",
                         "Label", NULL,
                         NULL,
                         G_PARAM_READWRITE |
                         G_PARAM_STATIC_STRINGS);

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  g_object_class_install_properties (gobject_class,
                                     PROP_LAST,
                                     props);
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  signals[SIGNAL_STATUS_CHANGED] =
    g_signal_new ("status-changed",
                  G_TYPE_FROM_CLASS (gobject_class),
                  G_SIGNAL_RUN_LAST,
                  0,
                  NULL, NULL,
                  NULL,
                  G_TYPE_NONE,
                  1, BOLT_TYPE_STATUS);

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  bolt_exported_class_set_interface_info (exported_class,
                                          BOLT_DBUS_DEVICE_INTERFACE,
                                          "/boltd/org.freedesktop.bolt.xml");

  bolt_exported_class_export_properties (exported_class,
                                         PROP_EXPORTED,
                                         PROP_LAST,
                                         props);

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  bolt_exported_class_property_setter (exported_class,
                                       props[PROP_LABEL],
                                       handle_set_label);

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  bolt_exported_class_export_method (exported_class,
                                     "Authorize",
                                     handle_authorize);

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}
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/* internal methods */

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static const char *
read_sysattr_name (struct udev_device *udev, const char *attr, GError **error)
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{
  g_autofree char *s = NULL;
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  const char *v;
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  s = g_strdup_printf ("%s_name", attr);
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  v = udev_device_get_sysattr_value (udev, s);

  if (v != NULL)
    return v;

  v = udev_device_get_sysattr_value (udev, attr);
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  if (v == NULL)
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    g_set_error (error,
                 BOLT_ERROR, BOLT_ERROR_UDEV,
                 "failed to get sysfs attr: %s", attr);
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  return v;
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}

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static gint
read_sysfs_attr_int (struct udev_device *device, const char *attr)
{
  const char *str;
  char *end;
  gint64 val;

  str = udev_device_get_sysattr_value (device, attr);

  if (str == NULL)
    return 0;

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  val = g_ascii_strtoll (str, &end, 0);
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  if (str == end)
    return 0;

  if (val > G_MAXINT || val < G_MININT)
    {
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      bolt_warn ("value read from sysfs outside of gint's range.");
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      val = 0;
    }

  return (gint) val;
}

static gboolean
string_nonzero (const char *str)
{
  return str != NULL && str[0] != '\0';
}

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static struct udev_device *
bolt_sysfs_get_parent (struct udev_device *udev,
                       GError            **error)
{
  struct udev_device * parent = udev_device_get_parent (udev);

  if (parent == NULL)
    g_set_error (error, BOLT_ERROR, BOLT_ERROR_UDEV,
                 "could not get parent udev device");

  return parent;
}

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static const char *
bolt_sysfs_get_parent_uid (struct udev_device *udev)
{
  struct udev_device *parent;
  const char *uid = NULL;

  parent = udev_device_get_parent (udev);
  if (parent)
    uid = udev_device_get_sysattr_value (parent, "unique_id");
  return uid;
}

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typedef enum BoltStatTime {
  BOLT_ST_ATIME,
  BOLT_ST_CTIME,
  BOLT_ST_MTIME
} BoltStatTime;

static gint64
bolt_sysfs_device_get_time (struct udev_device *udev,
                            BoltStatTime        st)
{
  const char *path;
  struct stat sb;
  gint64 ms;
  int r;

  path = udev_device_get_syspath (udev);

  if (path == NULL)
    return 0;

  r = lstat (path, &sb);

  if (r == -1)
    return 0;

  switch (st)
    {
    case BOLT_ST_CTIME:
      ms = (gint64) sb.st_ctim.tv_sec;
      break;

    case BOLT_ST_ATIME:
      ms = (gint64) sb.st_atim.tv_sec;
      break;

    case BOLT_ST_MTIME:
      ms = (gint64) sb.st_mtim.tv_sec;
      break;

    default:
      bolt_warn_enum_unhandled (BoltStatTime, st);
      return 0;
    }

  if (ms < 0)
    ms = 0;

  return ms;
}

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static BoltStatus
bolt_status_from_udev (struct udev_device *udev)
{
  gint authorized;
  const char *key;
  gboolean have_key;

  authorized = read_sysfs_attr_int (udev, "authorized");

  if (authorized == 2)
    return BOLT_STATUS_AUTHORIZED_SECURE;

  key = udev_device_get_sysattr_value (udev, "key");
  have_key = string_nonzero (key);

  if (authorized == 1)
    {
      if (have_key)
        return BOLT_STATUS_AUTHORIZED_NEWKEY;
      else
        return BOLT_STATUS_AUTHORIZED;
    }
  else if (authorized == 0 && have_key)
    {
      return BOLT_STATUS_AUTH_ERROR;
    }

  return BOLT_STATUS_CONNECTED;
}

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static const char *
cleanup_name (const char *name,
              const char *vendor,
              GError    **error)
{
  g_return_val_if_fail (vendor != NULL, NULL);
  g_return_val_if_fail (name != NULL, NULL);

  /* some devices have the vendor name as a prefix */
  if (!g_str_has_prefix (name, vendor))
    return name;

  name += strlen (vendor);

  while (g_ascii_isspace (*name))
    name++;

  if (*name == '\0')
    {
      g_set_error_literal (error,
                           BOLT_ERROR, BOLT_ERROR_UDEV,
                           "device has empty name after cleanup");
      return NULL;
    }

  return name;
}

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/*  device authorization */

typedef struct
{
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  BoltAuth *auth;
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  /* the outer callback  */
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  GAsyncReadyCallback callback;
  gpointer            user_data;
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} AuthData;

static void
auth_data_free (gpointer data)
{
  AuthData *auth = data;

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  g_clear_object (&auth->auth);
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  g_slice_free (AuthData, auth);
}

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static gboolean
authorize_device_internal (BoltDevice *dev,
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                           BoltAuth   *auth,
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                           GError    **error)
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{
  g_autoptr(DIR) devdir = NULL;
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  BoltKey *key;
  BoltSecurity level;
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  gboolean ok;

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  key = bolt_auth_get_key (auth);
  level = bolt_auth_get_level (auth);

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  devdir = bolt_opendir (dev->syspath, error);
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  if (devdir == NULL)
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    return FALSE;
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  ok = bolt_verify_uid (dirfd (devdir), dev->uid, error);
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  if (!ok)
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    return FALSE;

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  if (key)
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    {
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      int keyfd;

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      bolt_debug (LOG_DEV (dev), "writing key");
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      keyfd = bolt_openat (dirfd (devdir), "key", O_WRONLY | O_CLOEXEC, error);
      if (keyfd < 0)
        return FALSE;

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      ok = bolt_key_write_to (key, keyfd, &level, error);
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      close (keyfd);
      if (!ok)
        return FALSE;
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    }

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  bolt_debug (LOG_DEV (dev), "writing authorization");
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  ok = bolt_write_char_at (dirfd (devdir),
                           "authorized",
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                           level,
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                           error);
  return ok;
}

static void
authorize_in_thread (GTask        *task,
                     gpointer      source,
                     gpointer      context,
                     GCancellable *cancellable)
{
  g_autoptr(GError) error = NULL;
  BoltDevice *dev = source;
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  AuthData *auth_data = context;
  BoltAuth *auth = auth_data->auth;
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  gboolean ok;

  ok = authorize_device_internal (dev, auth, &error);
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  if (!ok)
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    g_task_return_new_error (task, BOLT_ERROR, BOLT_ERROR_FAILED,
                             "failed to authorize device: %s",
                             error->message);
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  else
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    g_task_return_boolean (task, TRUE);
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}

static void
authorize_thread_done (GObject      *object,
                       GAsyncResult *res,
                       gpointer      user_data)
{
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  g_autoptr(GError) error = NULL;
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  BoltDevice *dev = BOLT_DEVICE (object);
  GTask *task = G_TASK (res);
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  BoltStatus status;
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  AuthData *auth_data;
  BoltAuth *auth;
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  gboolean ok;
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  guint64 now;
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  auth_data = g_task_get_task_data (task);
  auth = auth_data->auth;

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  ok = g_task_propagate_boolean (task, &error);

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  if (!ok)
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    bolt_auth_return_error (auth, &error);

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  now = bolt_now_in_seconds ();
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  status = bolt_auth_to_status (auth);
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  g_object_set (dev,
                "status", status,
                "authtime", now,
                NULL);
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  if (auth_data->callback)
    auth_data->callback (G_OBJECT (dev),
                         G_ASYNC_RESULT (auth),
                         auth_data->user_data);
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}

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void
bolt_device_authorize (BoltDevice         *dev,
                       BoltAuth           *auth,
                       GAsyncReadyCallback callback,
                       gpointer            user_data)
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{
  AuthData *auth_data;
  GTask *task;

811 812
  g_object_set (auth, "device", dev, NULL);

813 814 815
  if (dev->status != BOLT_STATUS_CONNECTED &&
      dev->status != BOLT_STATUS_AUTH_ERROR)
    {
816
      bolt_auth_return_new_error (auth, BOLT_ERROR, BOLT_ERROR_FAILED,
817
                                  "wrong device state: %d", dev->status);
818

819 820
      if (callback)
        callback (G_OBJECT (dev), G_ASYNC_RESULT (auth), user_data);
821

822
      return;
823 824 825
    }

  task = g_task_new (dev, NULL, authorize_thread_done, NULL);
826 827 828
  auth_data = g_slice_new (AuthData);
  auth_data->callback = callback;
  auth_data->user_data = user_data;
829
  auth_data->auth = g_object_ref (auth);
830 831
  g_task_set_task_data (task, auth_data, auth_data_free);

832
  g_object_set (dev, "status", BOLT_STATUS_AUTHORIZING, NULL);
833 834 835 836 837

  g_task_run_in_thread (task, authorize_in_thread);
  g_object_unref (task);
}

838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888
/* dbus property setter */

static gboolean
handle_set_label (BoltExported *obj,
                  const char   *name,
                  const GValue *value,
                  GError      **error)
{
  g_autofree char *nick = NULL;
  g_autofree char *old = NULL;
  BoltDevice *dev = BOLT_DEVICE (obj);
  const char *str = g_value_get_string (value);
  gboolean ok;

  nick = bolt_strdup_validate (str);

  if (nick == NULL)
    {
      g_set_error_literal (error, G_DBUS_ERROR, G_DBUS_ERROR_INVALID_ARGS,
                           "string is invalid");
      return FALSE;
    }
  else if (strlen (nick) > 255)
    {
      g_set_error_literal (error, G_DBUS_ERROR, G_DBUS_ERROR_INVALID_ARGS,
                           "string is too long");
      return FALSE;
    }

  if (dev->store == NULL)
    {
      g_set_error_literal (error, G_DBUS_ERROR, G_DBUS_ERROR_INVALID_ARGS,
                           "device is not stored");
      return FALSE;
    }

  old = dev->label;
  dev->label = g_steal_pointer (&nick);

  ok = bolt_store_put_device (dev->store, dev, dev->policy, NULL, error);

  if (!ok)
    {
      bolt_warn_err (*error, LOG_DEV (dev), "failed to store device");

      nick = dev->label;
      dev->label = g_steal_pointer (&old);
    }

  return ok;
}
889 890 891 892

/* dbus methods */

static void
893 894 895
handle_authorize_done (GObject      *device,
                       GAsyncResult *res,
                       gpointer      user_data)
896
{
897 898 899 900 901 902 903
  GDBusMethodInvocation *inv;
  GError *error = NULL;
  BoltAuth *auth;
  gboolean ok;

  inv  = user_data;
  auth = BOLT_AUTH (res);
904

905
  ok = bolt_auth_check (auth, &error);
906
  if (ok)
907
    g_dbus_method_invocation_return_value (inv, g_variant_new ("()"));
908
  else
909
    g_dbus_method_invocation_take_error (inv, error);
910 911 912
}

static gboolean
913 914 915
handle_authorize (BoltExported          *object,
                  GVariant              *params,
                  GDBusMethodInvocation *inv)
916 917 918
{
  BoltDevice *dev = BOLT_DEVICE (object);
  GError *error = NULL;
919 920 921
  BoltAuth *auth;
  BoltSecurity level;
  BoltKey *key;
922

923 924
  level = dev->security;
  key = NULL;
925

926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941
  if (level == BOLT_SECURITY_SECURE)
    {
      if (dev->key)
        key = bolt_store_get_key (dev->store, dev->uid, &error);
      else
        level = BOLT_SECURITY_USER;
    }

  if (level == BOLT_SECURITY_SECURE && key == NULL)
    {
      g_dbus_method_invocation_take_error (inv, error);
      return TRUE;
    }

  auth = bolt_auth_new (dev, level, key);
  bolt_device_authorize (dev, auth, handle_authorize_done, inv);
942 943 944 945

  return TRUE;
}

946 947 948
/* public methods */

BoltDevice *
949
bolt_device_new_for_udev (struct udev_device *udev,
950 951
                          GError            **error)
{
952
  struct udev_device *parent_dev;
953 954 955 956
  const char *uid;
  const char *name;
  const char *vendor;
  const char *syspath;
957
  const char *parent;
958 959
  BoltSecurity security;
  BoltStatus status;
960
  BoltDeviceType type;
961
  BoltDevice *dev;
962
  guint64 ct, at;
963

964 965 966 967 968 969 970
  uid = udev_device_get_sysattr_value (udev, "unique_id");
  if (udev == NULL)
    {
      g_set_error (error, BOLT_ERROR, BOLT_ERROR_UDEV,
                   "could not get unique_id for udev");
      return NULL;
    }
971

972 973
  syspath = udev_device_get_syspath (udev);
  g_return_val_if_fail (syspath != NULL, NULL);
974

975
  name = read_sysattr_name (udev, "device", error);
976 977 978
  if (name == NULL)
    return NULL;

979
  vendor = read_sysattr_name (udev, "vendor", error);
980 981
  if (vendor == NULL)
    return NULL;
982

983 984 985 986
  name = cleanup_name (name, vendor, error);
  if (name == NULL)
    return NULL;

987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001
  parent_dev = bolt_sysfs_get_parent (udev, error);
  if (parent_dev == NULL)
    return NULL;

  if (bolt_sysfs_device_is_domain (parent_dev))
    {
      parent = NULL;
      type = BOLT_DEVICE_HOST;
    }
  else
    {
      parent = udev_device_get_sysattr_value (parent_dev, "unique_id");
      type = BOLT_DEVICE_PERIPHERAL;
    }

1002 1003
  ct = (guint64) bolt_sysfs_device_get_time (udev, BOLT_ST_CTIME);

1004
  parent = bolt_sysfs_get_parent_uid (udev);
1005
  security = bolt_sysfs_security_for_device (udev, NULL);
1006 1007 1008
  status = bolt_status_from_udev (udev);
  at = bolt_status_is_authorized (status) ? ct : 0;

1009
  dev = g_object_new (BOLT_TYPE_DEVICE,
1010 1011 1012
                      "uid", uid,
                      "name", name,
                      "vendor", vendor,
1013
                      "type", type,
1014
                      "status", status,
1015
                      "sysfs-path", syspath,
1016
                      "parent", parent,
1017
                      "conntime", ct,
1018 1019
                      "authtime", at,
                      "security", security,
1020 1021
                      NULL);

1022

1023 1024 1025
  return dev;
}

1026
const char *
1027 1028 1029 1030
bolt_device_export (BoltDevice      *device,
                    GDBusConnection *connection,
                    GError         **error)
{
1031
  const char *path;
1032
  gboolean ok;
1033 1034

  g_return_val_if_fail (BOLT_IS_DEVICE (device), FALSE);
1035

1036
  path = bolt_device_get_object_path (device);
1037

1038 1039 1040 1041 1042
  ok = bolt_exported_export (BOLT_EXPORTED (device),
                             connection,
                             path,
                             error);

1043
  return ok ? path : NULL;
1044 1045 1046 1047 1048
}

void
bolt_device_unexport (BoltDevice *device)
{
1049
  bolt_exported_unexport (BOLT_EXPORTED (device));
1050
}
1051

1052 1053 1054 1055 1056 1057

BoltStatus
bolt_device_connected (BoltDevice         *dev,
                       struct udev_device *udev)
{
  const char *syspath;
1058
  const char *parent;
1059 1060
  BoltSecurity security;
  BoltStatus status;
1061
  guint64 ct, at;
1062 1063 1064

  syspath = udev_device_get_syspath (udev);
  status = bolt_status_from_udev (udev);
1065
  security = bolt_sysfs_security_for_device (udev, NULL);
1066
  parent = bolt_sysfs_get_parent_uid (udev);
1067

1068
  ct = (guint64) bolt_sysfs_device_get_time (udev, BOLT_ST_CTIME);
1069 1070
  at = bolt_status_is_authorized (status) ? ct : 0;

1071

1072
  g_object_set (G_OBJECT (dev),
1073
                "parent", parent,
1074 1075 1076
                "sysfs-path", syspath,
                "security", security,
                "status", status,
1077
                "conntime", ct,
1078
                "authtime", at,
1079 1080
                NULL);

1081
  bolt_info (LOG_DEV (dev), "parent is %.13s...", dev->parent);
1082

1083 1084 1085 1086 1087 1088 1089
  return status;
}

BoltStatus
bolt_device_disconnected (BoltDevice *dev)
{
  g_object_set (G_OBJECT (dev),
1090
                "parent", NULL,
1091 1092 1093
                "sysfs-path", NULL,
                "security", BOLT_SECURITY_NONE,
                "status", BOLT_STATUS_DISCONNECTED,