]>
Commit | Line | Data |
---|---|---|
20263082 LP |
1 | /*** |
2 | This file is part of systemd. | |
3 | ||
4 | Copyright 2011 Lennart Poettering | |
5 | ||
6 | systemd is free software; you can redistribute it and/or modify it | |
5430f7f2 LP |
7 | under the terms of the GNU Lesser General Public License as published by |
8 | the Free Software Foundation; either version 2.1 of the License, or | |
20263082 LP |
9 | (at your option) any later version. |
10 | ||
11 | systemd is distributed in the hope that it will be useful, but | |
12 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
5430f7f2 | 14 | Lesser General Public License for more details. |
20263082 | 15 | |
5430f7f2 | 16 | You should have received a copy of the GNU Lesser General Public License |
20263082 LP |
17 | along with systemd; If not, see <http://www.gnu.org/licenses/>. |
18 | ***/ | |
19 | ||
20263082 LP |
20 | #include <string.h> |
21 | ||
b5efdb8a | 22 | #include "alloc-util.h" |
cc377381 | 23 | #include "logind-device.h" |
b5efdb8a | 24 | #include "util.h" |
20263082 | 25 | |
718d006a | 26 | Device* device_new(Manager *m, const char *sysfs, bool master) { |
20263082 LP |
27 | Device *d; |
28 | ||
29 | assert(m); | |
30 | assert(sysfs); | |
31 | ||
32 | d = new0(Device, 1); | |
33 | if (!d) | |
34 | return NULL; | |
35 | ||
36 | d->sysfs = strdup(sysfs); | |
6b430fdb ZJS |
37 | if (!d->sysfs) |
38 | return mfree(d); | |
20263082 LP |
39 | |
40 | if (hashmap_put(m->devices, d->sysfs, d) < 0) { | |
41 | free(d->sysfs); | |
6b430fdb | 42 | return mfree(d); |
20263082 LP |
43 | } |
44 | ||
45 | d->manager = m; | |
718d006a | 46 | d->master = master; |
20263082 LP |
47 | dual_timestamp_get(&d->timestamp); |
48 | ||
49 | return d; | |
50 | } | |
51 | ||
9588bc32 | 52 | static void device_detach(Device *d) { |
f1a8e221 | 53 | Seat *s; |
118ecf32 | 54 | SessionDevice *sd; |
cc377381 | 55 | |
20263082 LP |
56 | assert(d); |
57 | ||
f1a8e221 LP |
58 | if (!d->seat) |
59 | return; | |
20263082 | 60 | |
118ecf32 DH |
61 | while ((sd = d->session_devices)) |
62 | session_device_free(sd); | |
63 | ||
f1a8e221 | 64 | s = d->seat; |
71fda00f | 65 | LIST_REMOVE(devices, d->seat->devices, d); |
20263082 | 66 | d->seat = NULL; |
f1a8e221 | 67 | |
718d006a DH |
68 | if (!seat_has_master_device(s)) { |
69 | seat_add_to_gc_queue(s); | |
cc377381 | 70 | seat_send_changed(s, "CanGraphical", NULL); |
718d006a | 71 | } |
20263082 LP |
72 | } |
73 | ||
9588bc32 LP |
74 | void device_free(Device *d) { |
75 | assert(d); | |
76 | ||
77 | device_detach(d); | |
78 | ||
79 | hashmap_remove(d->manager->devices, d->sysfs); | |
80 | ||
81 | free(d->sysfs); | |
82 | free(d); | |
83 | } | |
84 | ||
20263082 | 85 | void device_attach(Device *d, Seat *s) { |
718d006a DH |
86 | Device *i; |
87 | bool had_master; | |
88 | ||
20263082 LP |
89 | assert(d); |
90 | assert(s); | |
91 | ||
f1a8e221 LP |
92 | if (d->seat == s) |
93 | return; | |
94 | ||
20263082 LP |
95 | if (d->seat) |
96 | device_detach(d); | |
97 | ||
20263082 | 98 | d->seat = s; |
718d006a DH |
99 | had_master = seat_has_master_device(s); |
100 | ||
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. */ | |
107 | ||
108 | if (d->master || !s->devices) | |
71fda00f | 109 | LIST_PREPEND(devices, s->devices, d); |
718d006a DH |
110 | else { |
111 | LIST_FOREACH(devices, i, s->devices) { | |
112 | if (!i->devices_next || !i->master) { | |
71fda00f | 113 | LIST_INSERT_AFTER(devices, s->devices, i, d); |
718d006a DH |
114 | break; |
115 | } | |
116 | } | |
117 | } | |
f1a8e221 | 118 | |
718d006a | 119 | if (!had_master && d->master) |
cc377381 | 120 | seat_send_changed(s, "CanGraphical", NULL); |
20263082 | 121 | } |