107 lines
2.6 KiB
C
107 lines
2.6 KiB
C
/* SPDX-License-Identifier: LGPL-2.1+ */
|
|
|
|
#include <string.h>
|
|
|
|
#include "alloc-util.h"
|
|
#include "logind-device.h"
|
|
#include "logind-seat-dbus.h"
|
|
#include "util.h"
|
|
|
|
Device* device_new(Manager *m, const char *sysfs, bool master) {
|
|
Device *d;
|
|
|
|
assert(m);
|
|
assert(sysfs);
|
|
|
|
d = new0(Device, 1);
|
|
if (!d)
|
|
return NULL;
|
|
|
|
d->sysfs = strdup(sysfs);
|
|
if (!d->sysfs)
|
|
return mfree(d);
|
|
|
|
if (hashmap_put(m->devices, d->sysfs, d) < 0) {
|
|
free(d->sysfs);
|
|
return mfree(d);
|
|
}
|
|
|
|
d->manager = m;
|
|
d->master = master;
|
|
dual_timestamp_get(&d->timestamp);
|
|
|
|
return d;
|
|
}
|
|
|
|
static void device_detach(Device *d) {
|
|
Seat *s;
|
|
SessionDevice *sd;
|
|
|
|
assert(d);
|
|
|
|
if (!d->seat)
|
|
return;
|
|
|
|
while ((sd = d->session_devices))
|
|
session_device_free(sd);
|
|
|
|
s = d->seat;
|
|
LIST_REMOVE(devices, d->seat->devices, d);
|
|
d->seat = NULL;
|
|
|
|
if (!seat_has_master_device(s)) {
|
|
seat_add_to_gc_queue(s);
|
|
seat_send_changed(s, "CanGraphical", NULL);
|
|
}
|
|
}
|
|
|
|
void device_free(Device *d) {
|
|
assert(d);
|
|
|
|
device_detach(d);
|
|
|
|
hashmap_remove(d->manager->devices, d->sysfs);
|
|
|
|
free(d->sysfs);
|
|
free(d);
|
|
}
|
|
|
|
void device_attach(Device *d, Seat *s) {
|
|
Device *i;
|
|
bool had_master;
|
|
|
|
assert(d);
|
|
assert(s);
|
|
|
|
if (d->seat == s)
|
|
return;
|
|
|
|
if (d->seat)
|
|
device_detach(d);
|
|
|
|
d->seat = s;
|
|
had_master = seat_has_master_device(s);
|
|
|
|
/* We keep the device list sorted by the "master" flag. That is, master
|
|
* devices are at the front, other devices at the tail. As there is no
|
|
* way to easily add devices at the list-tail, we need to iterate the
|
|
* list to find the first non-master device when adding non-master
|
|
* devices. We assume there is only a few (normally 1) master devices
|
|
* per seat, so we iterate only a few times. */
|
|
|
|
if (d->master || !s->devices)
|
|
LIST_PREPEND(devices, s->devices, d);
|
|
else
|
|
LIST_FOREACH(devices, i, s->devices) {
|
|
if (!i->devices_next || !i->master) {
|
|
LIST_INSERT_AFTER(devices, s->devices, i, d);
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (!had_master && d->master && s->started) {
|
|
seat_save(s);
|
|
seat_send_changed(s, "CanGraphical", NULL);
|
|
}
|
|
}
|