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Commit | Line | Data |
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db9ecf05 | 1 | /* SPDX-License-Identifier: LGPL-2.1-or-later */ |
20263082 | 2 | |
20263082 LP |
3 | #include <string.h> |
4 | ||
b5efdb8a | 5 | #include "alloc-util.h" |
cc377381 | 6 | #include "logind-device.h" |
6ecda0fb | 7 | #include "logind-seat-dbus.h" |
b5efdb8a | 8 | #include "util.h" |
20263082 | 9 | |
718d006a | 10 | Device* device_new(Manager *m, const char *sysfs, bool master) { |
20263082 LP |
11 | Device *d; |
12 | ||
13 | assert(m); | |
14 | assert(sysfs); | |
15 | ||
16 | d = new0(Device, 1); | |
17 | if (!d) | |
18 | return NULL; | |
19 | ||
20 | d->sysfs = strdup(sysfs); | |
6b430fdb ZJS |
21 | if (!d->sysfs) |
22 | return mfree(d); | |
20263082 LP |
23 | |
24 | if (hashmap_put(m->devices, d->sysfs, d) < 0) { | |
25 | free(d->sysfs); | |
6b430fdb | 26 | return mfree(d); |
20263082 LP |
27 | } |
28 | ||
29 | d->manager = m; | |
718d006a | 30 | d->master = master; |
20263082 LP |
31 | dual_timestamp_get(&d->timestamp); |
32 | ||
33 | return d; | |
34 | } | |
35 | ||
9588bc32 | 36 | static void device_detach(Device *d) { |
f1a8e221 | 37 | Seat *s; |
118ecf32 | 38 | SessionDevice *sd; |
cc377381 | 39 | |
20263082 LP |
40 | assert(d); |
41 | ||
f1a8e221 LP |
42 | if (!d->seat) |
43 | return; | |
20263082 | 44 | |
118ecf32 DH |
45 | while ((sd = d->session_devices)) |
46 | session_device_free(sd); | |
47 | ||
f1a8e221 | 48 | s = d->seat; |
71fda00f | 49 | LIST_REMOVE(devices, d->seat->devices, d); |
20263082 | 50 | d->seat = NULL; |
f1a8e221 | 51 | |
718d006a DH |
52 | if (!seat_has_master_device(s)) { |
53 | seat_add_to_gc_queue(s); | |
cc377381 | 54 | seat_send_changed(s, "CanGraphical", NULL); |
718d006a | 55 | } |
20263082 LP |
56 | } |
57 | ||
9588bc32 LP |
58 | void device_free(Device *d) { |
59 | assert(d); | |
60 | ||
61 | device_detach(d); | |
62 | ||
63 | hashmap_remove(d->manager->devices, d->sysfs); | |
64 | ||
65 | free(d->sysfs); | |
66 | free(d); | |
67 | } | |
68 | ||
20263082 | 69 | void device_attach(Device *d, Seat *s) { |
718d006a DH |
70 | Device *i; |
71 | bool had_master; | |
72 | ||
20263082 LP |
73 | assert(d); |
74 | assert(s); | |
75 | ||
f1a8e221 LP |
76 | if (d->seat == s) |
77 | return; | |
78 | ||
20263082 LP |
79 | if (d->seat) |
80 | device_detach(d); | |
81 | ||
20263082 | 82 | d->seat = s; |
718d006a DH |
83 | had_master = seat_has_master_device(s); |
84 | ||
85 | /* We keep the device list sorted by the "master" flag. That is, master | |
86 | * devices are at the front, other devices at the tail. As there is no | |
87 | * way to easily add devices at the list-tail, we need to iterate the | |
88 | * list to find the first non-master device when adding non-master | |
89 | * devices. We assume there is only a few (normally 1) master devices | |
90 | * per seat, so we iterate only a few times. */ | |
91 | ||
92 | if (d->master || !s->devices) | |
71fda00f | 93 | LIST_PREPEND(devices, s->devices, d); |
4b9e5848 | 94 | else |
718d006a DH |
95 | LIST_FOREACH(devices, i, s->devices) { |
96 | if (!i->devices_next || !i->master) { | |
71fda00f | 97 | LIST_INSERT_AFTER(devices, s->devices, i, d); |
718d006a DH |
98 | break; |
99 | } | |
100 | } | |
f1a8e221 | 101 | |
ad1bf59c RS |
102 | if (!had_master && d->master && s->started) { |
103 | seat_save(s); | |
cc377381 | 104 | seat_send_changed(s, "CanGraphical", NULL); |
ad1bf59c | 105 | } |
20263082 | 106 | } |