1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
4 This file is part of systemd.
6 Copyright 2011 Lennart Poettering
8 systemd is free software; you can redistribute it and/or modify it
9 under the terms of the GNU Lesser General Public License as published by
10 the Free Software Foundation; either version 2.1 of the License, or
11 (at your option) any later version.
13 systemd is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 Lesser General Public License for more details.
18 You should have received a copy of the GNU Lesser General Public License
19 along with systemd; If not, see <http://www.gnu.org/licenses/>.
26 #include "logind-device.h"
28 Device* device_new(Manager *m, const char *sysfs, bool master) {
38 d->sysfs = strdup(sysfs);
44 if (hashmap_put(m->devices, d->sysfs, d) < 0) {
52 dual_timestamp_get(&d->timestamp);
57 static void device_detach(Device *d) {
66 while ((sd = d->session_devices))
67 session_device_free(sd);
70 LIST_REMOVE(devices, d->seat->devices, d);
73 if (!seat_has_master_device(s)) {
74 seat_add_to_gc_queue(s);
75 seat_send_changed(s, "CanGraphical", NULL);
79 void device_free(Device *d) {
84 hashmap_remove(d->manager->devices, d->sysfs);
90 void device_attach(Device *d, Seat *s) {
104 had_master = seat_has_master_device(s);
106 /* We keep the device list sorted by the "master" flag. That is, master
107 * devices are at the front, other devices at the tail. As there is no
108 * way to easily add devices at the list-tail, we need to iterate the
109 * list to find the first non-master device when adding non-master
110 * devices. We assume there is only a few (normally 1) master devices
111 * per seat, so we iterate only a few times. */
113 if (d->master || !s->devices)
114 LIST_PREPEND(devices, s->devices, d);
116 LIST_FOREACH(devices, i, s->devices) {
117 if (!i->devices_next || !i->master) {
118 LIST_INSERT_AFTER(devices, s->devices, i, d);
124 if (!had_master && d->master)
125 seat_send_changed(s, "CanGraphical", NULL);