src/console/consoled-session.c

   1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
   2
   3 /***
   4   This file is part of systemd.
   5
   6   Copyright 2014 David Herrmann <dh.herrmann@gmail.com>
   7
   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.
  12
  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.
  17
  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/>.
  20 ***/
  21
  22 #include <errno.h>
  23 #include <inttypes.h>
  24 #include <libudev.h>
  25 #include <stdlib.h>
  26 #include "consoled.h"
  27 #include "grdev.h"
  28 #include "hashmap.h"
  29 #include "idev.h"
  30 #include "list.h"
  31 #include "macro.h"
  32 #include "sd-bus.h"
  33 #include "sd-event.h"
  34 #include "sysview.h"
  35 #include "util.h"
  36
  37 static bool session_feed_keyboard(Session *s, idev_data *data) {
  38         idev_data_keyboard *kdata = &data->keyboard;
  39
  40         if (!data->resync && kdata->value == 1 && kdata->n_syms == 1) {
  41                 uint32_t nr;
  42                 sysview_seat *seat;
  43
  44                 /* handle VT-switch requests */
  45                 nr = 0;
  46
  47                 switch (kdata->keysyms[0]) {
  48                 case XKB_KEY_F1 ... XKB_KEY_F12:
  49                         if (IDEV_KBDMATCH(kdata,
  50                                           IDEV_KBDMOD_CTRL | IDEV_KBDMOD_ALT,
  51                                           kdata->keysyms[0]))
  52                                 nr = kdata->keysyms[0] - XKB_KEY_F1 + 1;
  53                         break;
  54                 case XKB_KEY_XF86Switch_VT_1 ... XKB_KEY_XF86Switch_VT_12:
  55                         nr = kdata->keysyms[0] - XKB_KEY_XF86Switch_VT_1 + 1;
  56                         break;
  57                 }
  58
  59                 if (nr != 0) {
  60                         seat = sysview_session_get_seat(s->sysview);
  61                         sysview_seat_switch_to(seat, nr);
  62                         return true;
  63                 }
  64         }
  65
  66         return false;
  67 }
  68
  69 static bool session_feed(Session *s, idev_data *data) {
  70         switch (data->type) {
  71         case IDEV_DATA_KEYBOARD:
  72                 return session_feed_keyboard(s, data);
  73         default:
  74                 return false;
  75         }
  76 }
  77
  78 static int session_idev_fn(idev_session *idev, void *userdata, idev_event *event) {
  79         Session *s = userdata;
  80
  81         switch (event->type) {
  82         case IDEV_EVENT_DEVICE_ADD:
  83                 idev_device_enable(event->device_add.device);
  84                 break;
  85         case IDEV_EVENT_DEVICE_REMOVE:
  86                 idev_device_disable(event->device_remove.device);
  87                 break;
  88         case IDEV_EVENT_DEVICE_DATA:
  89                 if (!session_feed(s, &event->device_data.data))
  90                         workspace_feed(s->active_ws, &event->device_data.data);
  91                 break;
  92         }
  93
  94         return 0;
  95 }
  96
  97 static void session_grdev_fn(grdev_session *grdev, void *userdata, grdev_event *event) {
  98         grdev_display *display;
  99         Session *s = userdata;
 100         Display *d;
 101         int r;
 102
 103         switch (event->type) {
 104         case GRDEV_EVENT_DISPLAY_ADD:
 105                 display = event->display_add.display;
 106
 107                 r = display_new(&d, s, display);
 108                 if (r < 0) {
 109                         log_error("Cannot create display '%s' on '%s': %s",
 110                                   grdev_display_get_name(display), sysview_session_get_name(s->sysview), strerror(-r));
 111                         break;
 112                 }
 113
 114                 grdev_display_set_userdata(display, d);
 115                 workspace_refresh(s->active_ws);
 116                 break;
 117         case GRDEV_EVENT_DISPLAY_REMOVE:
 118                 display = event->display_remove.display;
 119                 d = grdev_display_get_userdata(display);
 120                 if (!d)
 121                         break;
 122
 123                 display_free(d);
 124                 workspace_refresh(s->active_ws);
 125                 break;
 126         case GRDEV_EVENT_DISPLAY_CHANGE:
 127                 display = event->display_remove.display;
 128                 d = grdev_display_get_userdata(display);
 129                 if (!d)
 130                         break;
 131
 132                 display_refresh(d);
 133                 workspace_refresh(s->active_ws);
 134                 break;
 135         case GRDEV_EVENT_DISPLAY_FRAME:
 136                 display = event->display_remove.display;
 137                 d = grdev_display_get_userdata(display);
 138                 if (!d)
 139                         break;
 140
 141                 session_dirty(s);
 142                 break;
 143         }
 144 }
 145
 146 static int session_redraw_fn(sd_event_source *src, void *userdata) {
 147         Session *s = userdata;
 148         Display *d;
 149
 150         LIST_FOREACH(displays_by_session, d, s->display_list)
 151                 display_render(d, s->active_ws);
 152
 153         grdev_session_commit(s->grdev);
 154
 155         return 0;
 156 }
 157
 158 int session_new(Session **out, Manager *m, sysview_session *session) {
 159         _cleanup_(session_freep) Session *s = NULL;
 160         int r;
 161
 162         assert(out);
 163         assert(m);
 164         assert(session);
 165
 166         s = new0(Session, 1);
 167         if (!s)
 168                 return -ENOMEM;
 169
 170         s->manager = m;
 171         s->sysview = session;
 172
 173         r = grdev_session_new(&s->grdev,
 174                               m->grdev,
 175                               GRDEV_SESSION_MANAGED,
 176                               sysview_session_get_name(session),
 177                               session_grdev_fn,
 178                               s);
 179         if (r < 0)
 180                 return r;
 181
 182         r = idev_session_new(&s->idev,
 183                              m->idev,
 184                              IDEV_SESSION_MANAGED,
 185                              sysview_session_get_name(session),
 186                              session_idev_fn,
 187                              s);
 188         if (r < 0)
 189                 return r;
 190
 191         r = workspace_new(&s->my_ws, m);
 192         if (r < 0)
 193                 return r;
 194
 195         s->active_ws = workspace_attach(s->my_ws, s);
 196
 197         r = sd_event_add_defer(m->event, &s->redraw_src, session_redraw_fn, s);
 198         if (r < 0)
 199                 return r;
 200
 201         grdev_session_enable(s->grdev);
 202         idev_session_enable(s->idev);
 203
 204         *out = s;
 205         s = NULL;
 206         return 0;
 207 }
 208
 209 Session *session_free(Session *s) {
 210         if (!s)
 211                 return NULL;
 212
 213         assert(!s->display_list);
 214
 215         sd_event_source_unref(s->redraw_src);
 216
 217         workspace_detach(s->active_ws, s);
 218         workspace_unref(s->my_ws);
 219
 220         idev_session_free(s->idev);
 221         grdev_session_free(s->grdev);
 222         free(s);
 223
 224         return NULL;
 225 }
 226
 227 void session_dirty(Session *s) {
 228         int r;
 229
 230         assert(s);
 231
 232         r = sd_event_source_set_enabled(s->redraw_src, SD_EVENT_ONESHOT);
 233         if (r < 0)
 234                 log_error_errno(-r, "Cannot enable redraw-source: %m");
 235 }
 236
 237 void session_add_device(Session *s, sysview_device *device) {
 238         unsigned int type;
 239
 240         assert(s);
 241         assert(device);
 242
 243         type = sysview_device_get_type(device);
 244         switch (type) {
 245         case SYSVIEW_DEVICE_DRM:
 246                 grdev_session_add_drm(s->grdev, sysview_device_get_ud(device));
 247                 break;
 248         case SYSVIEW_DEVICE_EVDEV:
 249                 idev_session_add_evdev(s->idev, sysview_device_get_ud(device));
 250                 break;
 251         }
 252 }
 253
 254 void session_remove_device(Session *s, sysview_device *device) {
 255         unsigned int type;
 256
 257         assert(s);
 258         assert(device);
 259
 260         type = sysview_device_get_type(device);
 261         switch (type) {
 262         case SYSVIEW_DEVICE_DRM:
 263                 grdev_session_remove_drm(s->grdev, sysview_device_get_ud(device));
 264                 break;
 265         case SYSVIEW_DEVICE_EVDEV:
 266                 idev_session_remove_evdev(s->idev, sysview_device_get_ud(device));
 267                 break;
 268         }
 269 }
 270
 271 void session_refresh_device(Session *s, sysview_device *device, struct udev_device *ud) {
 272         unsigned int type;
 273
 274         assert(s);
 275         assert(device);
 276
 277         type = sysview_device_get_type(device);
 278         switch (type) {
 279         case SYSVIEW_DEVICE_DRM:
 280                 grdev_session_hotplug_drm(s->grdev, sysview_device_get_ud(device));
 281                 break;
 282         }
 283 }