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/>.
25 #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 void device_free(Device *d) {
62 hashmap_remove(d->manager->devices, d->sysfs);
68 void device_detach(Device *d) {
76 LIST_REMOVE(Device, devices, d->seat->devices, d);
79 if (!seat_has_master_device(s)) {
80 seat_add_to_gc_queue(s);
81 seat_send_changed(s, "CanGraphical\0");
85 void device_attach(Device *d, Seat *s) {
99 had_master = seat_has_master_device(s);
101 /* We keep the device list sorted by the "master" flag. That is, master
102 * devices are at the front, other devices at the tail. As there is no
103 * way to easily add devices at the list-tail, we need to iterate the
104 * list to find the first non-master device when adding non-master
105 * devices. We assume there is only a few (normally 1) master devices
106 * per seat, so we iterate only a few times. */
108 if (d->master || !s->devices)
109 LIST_PREPEND(Device, devices, s->devices, d);
111 LIST_FOREACH(devices, i, s->devices) {
112 if (!i->devices_next || !i->master) {
113 LIST_INSERT_AFTER(Device, devices, s->devices, i, d);
119 if (!had_master && d->master)
120 seat_send_changed(s, "CanGraphical\0");