src/tdm_server.c

   1 /**************************************************************************
   2  *
   3  * libtdm
   4  *
   5  * Copyright 2015 Samsung Electronics co., Ltd. All Rights Reserved.
   6  *
   7  * Contact: Eunchul Kim <chulspro.kim@samsung.com>,
   8  *          JinYoung Jeon <jy0.jeon@samsung.com>,
   9  *          Taeheon Kim <th908.kim@samsung.com>,
  10  *          YoungJun Cho <yj44.cho@samsung.com>,
  11  *          SooChan Lim <sc1.lim@samsung.com>,
  12  *          Boram Park <sc1.lim@samsung.com>
  13  *
  14  * Permission is hereby granted, free of charge, to any person obtaining a
  15  * copy of this software and associated documentation files (the
  16  * "Software"), to deal in the Software without restriction, including
  17  * without limitation the rights to use, copy, modify, merge, publish,
  18  * distribute, sub license, and/or sell copies of the Software, and to
  19  * permit persons to whom the Software is furnished to do so, subject to
  20  * the following conditions:
  21  *
  22  * The above copyright notice and this permission notice (including the
  23  * next paragraph) shall be included in all copies or substantial portions
  24  * of the Software.
  25  *
  26  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  27  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  28  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  29  * IN NO EVENT SHALL PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR
  30  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  31  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  32  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  33  *
  34 **************************************************************************/
  35
  36 #ifdef HAVE_CONFIG_H
  37 #include "config.h"
  38 #endif
  39
  40 #include "tdm.h"
  41 #include "tdm_private.h"
  42 #include "tdm_list.h"
  43 #include "tdm-server-protocol.h"
  44
  45 /* CAUTION:
  46  * - tdm server doesn't care about thread things.
  47  * - DO NOT use the TDM internal functions here.
  48  *     However, the internal function which does lock/unlock the mutex of
  49  *     private_display in itself can be called.
  50  * - DO NOT use the tdm_private_display structure here.
  51  * - The callback function things can be called in main thread.
  52  */
  53
  54 struct _tdm_private_server {
  55         tdm_private_loop *private_loop;
  56         struct list_head output_list;
  57         struct list_head wait_list;
  58 };
  59
  60 typedef struct _tdm_server_output_info {
  61         struct list_head link;
  62         tdm_private_server *private_server;
  63         struct wl_resource *resource;
  64         tdm_output *output;
  65         struct list_head vblank_list;
  66         unsigned int watch_output_changes;
  67 } tdm_server_output_info;
  68
  69 typedef struct _tdm_server_vblank_info {
  70         struct list_head link;
  71         tdm_server_output_info *output_info;
  72         struct wl_resource *resource;
  73
  74         tdm_vblank *vblank;
  75 } tdm_server_vblank_info;
  76
  77 typedef struct _tdm_server_wait_info {
  78         struct list_head link;
  79         tdm_server_vblank_info *vblank_info;
  80
  81         unsigned int req_id;
  82 } tdm_server_wait_info;
  83
  84 typedef struct _tdm_server_client_info {
  85         struct list_head link;
  86         pid_t pid;
  87         char name[TDM_NAME_LEN];
  88 } tdm_server_client_info;
  89
  90 static tdm_private_server *keep_private_server;
  91 static struct list_head client_list;
  92
  93 static void destroy_wait(tdm_server_wait_info *wait_info);
  94
  95 static void
  96 _tdm_server_get_process_name(pid_t pid, char *name, unsigned int size)
  97 {
  98         char proc[TDM_NAME_LEN], pname[TDM_NAME_LEN];
  99         FILE *h;
 100         size_t len;
 101
 102         snprintf(name, size, "Unknown");
 103
 104         snprintf(proc, TDM_NAME_LEN, "/proc/%d/cmdline", pid);
 105         h = fopen(proc, "r");
 106         if (!h)
 107                 return;
 108
 109         len = fread(pname, sizeof(char), TDM_NAME_LEN, h);
 110         if (len == 0) {
 111                 char *p = strncpy(pname, "NO NAME", sizeof(pname) - 1);
 112                 len = p - pname;
 113         }
 114         pname[len - 1] = '\0';
 115
 116         strncpy(name, pname, size - 1);
 117         name[size - 1] = '\0';
 118
 119         fclose(h);
 120 }
 121
 122 static tdm_output*
 123 _tdm_server_find_output(tdm_private_server *private_server, const char *name)
 124 {
 125         tdm_private_loop *private_loop = private_server->private_loop;
 126         tdm_output *found = NULL;
 127
 128         if (!strncasecmp(name, "primary", 7) || !strncasecmp(name, "default", 7))
 129                 found = tdm_display_get_output(private_loop->dpy, 0, NULL);
 130
 131         if (!found) {
 132                 int count = 0, i;
 133
 134                 tdm_display_get_output_count(private_loop->dpy, &count);
 135
 136                 for (i = 0; i < count; i++) {
 137                         tdm_output *output = tdm_display_get_output(private_loop->dpy, i, NULL);
 138                         tdm_output_conn_status status;
 139                         const char *model = NULL;
 140                         tdm_error ret;
 141
 142                         ret = tdm_output_get_conn_status(output, &status);
 143                         if (ret || status == TDM_OUTPUT_CONN_STATUS_DISCONNECTED)
 144                                 continue;
 145
 146                         ret = tdm_output_get_model_info(output, NULL, &model, NULL);
 147                         if (ret || !model)
 148                                 continue;
 149
 150                         if (strncmp(model, name, TDM_NAME_LEN))
 151                                 continue;
 152
 153                         found = output;
 154                         break;
 155                 }
 156         }
 157
 158         return found;
 159 }
 160
 161 static void
 162 _tdm_server_send_done(tdm_server_wait_info *wait_info, tdm_error error,
 163                                           unsigned int sequence, unsigned int tv_sec, unsigned int tv_usec)
 164 {
 165         tdm_server_wait_info *found;
 166         tdm_server_vblank_info *vblank_info;
 167
 168         if (!keep_private_server)
 169                 return;
 170
 171         LIST_FIND_ITEM(wait_info, &keep_private_server->wait_list,
 172                                    tdm_server_wait_info, link, found);
 173         if (!found) {
 174                 TDM_DBG("wait_info(%p) is destroyed", wait_info);
 175                 return;
 176         }
 177
 178         if (tdm_debug_module & TDM_DEBUG_VBLANK)
 179                 TDM_INFO("req_id(%d) done", wait_info->req_id);
 180
 181         TDM_TRACE_COUNT(ServerDoneVBlank, wait_info->req_id);
 182
 183         vblank_info = wait_info->vblank_info;
 184         wl_tdm_vblank_send_done(vblank_info->resource, wait_info->req_id,
 185                                                         sequence, tv_sec, tv_usec, error);
 186         destroy_wait(wait_info);
 187 }
 188
 189 static void
 190 _tdm_server_cb_vblank(tdm_vblank *vblank, tdm_error error, unsigned int sequence,
 191                                           unsigned int tv_sec, unsigned int tv_usec, void *user_data)
 192 {
 193         _tdm_server_send_done((tdm_server_wait_info*)user_data, error, sequence, tv_sec, tv_usec);
 194 }
 195
 196 static void
 197 _tdm_server_cb_output_change(tdm_output *output, tdm_output_change_type type,
 198                                                          tdm_value value, void *user_data)
 199 {
 200         tdm_server_output_info *output_info = user_data;
 201         struct wl_client *client;
 202         pid_t pid = 0;
 203
 204         TDM_RETURN_IF_FAIL(output_info != NULL);
 205
 206         client = wl_resource_get_client(output_info->resource);
 207         TDM_RETURN_IF_FAIL(client != NULL);
 208
 209         wl_client_get_credentials(client, &pid, NULL, NULL);
 210
 211         if (!output_info->watch_output_changes) {
 212                 TDM_DBG("skip sending the output changes: pid(%d)", (unsigned int)pid);
 213                 return;
 214         }
 215
 216         TDM_DBG("send the output changes: %d", (unsigned int)pid);
 217
 218         switch (type) {
 219         case TDM_OUTPUT_CHANGE_DPMS:
 220                 wl_tdm_output_send_dpms(output_info->resource, value.u32);
 221                 break;
 222         case TDM_OUTPUT_CHANGE_CONNECTION:
 223                 wl_tdm_output_send_connection(output_info->resource, value.u32);
 224                 break;
 225         default:
 226                 break;
 227         }
 228 }
 229
 230 static void
 231 destroy_wait(tdm_server_wait_info *wait_info)
 232 {
 233         LIST_DEL(&wait_info->link);
 234         free(wait_info);
 235 }
 236
 237 static void
 238 destroy_vblank_callback(struct wl_resource *resource)
 239 {
 240         tdm_server_vblank_info *vblank_info = wl_resource_get_user_data(resource);
 241         tdm_server_wait_info *w = NULL, *ww = NULL;
 242
 243         TDM_RETURN_IF_FAIL(vblank_info != NULL);
 244
 245         if (vblank_info->vblank)
 246                 tdm_vblank_destroy(vblank_info->vblank);
 247
 248         LIST_FOR_EACH_ENTRY_SAFE(w, ww, &keep_private_server->wait_list, link) {
 249                 if (w->vblank_info == vblank_info)
 250                         destroy_wait(w);
 251         }
 252
 253         LIST_DEL(&vblank_info->link);
 254         free(vblank_info);
 255 }
 256
 257 static void
 258 _tdm_server_vblank_cb_destroy(struct wl_client *client, struct wl_resource *resource)
 259 {
 260         wl_resource_destroy(resource);
 261 }
 262
 263 static void
 264 _tdm_server_vblank_cb_set_name(struct wl_client *client, struct wl_resource *resource, const char *name)
 265 {
 266         tdm_server_vblank_info *vblank_info = wl_resource_get_user_data(resource);
 267
 268         tdm_vblank_set_name(vblank_info->vblank, name);
 269 }
 270
 271 static void
 272 _tdm_server_vblank_cb_set_fps(struct wl_client *client, struct wl_resource *resource, uint32_t fps)
 273 {
 274         tdm_server_vblank_info *vblank_info = wl_resource_get_user_data(resource);
 275
 276         tdm_vblank_set_fps(vblank_info->vblank, fps);
 277 }
 278
 279 static void
 280 _tdm_server_vblank_cb_set_offset(struct wl_client *client, struct wl_resource *resource, int32_t offset)
 281 {
 282         tdm_server_vblank_info *vblank_info = wl_resource_get_user_data(resource);
 283
 284         tdm_vblank_set_offset(vblank_info->vblank, offset);
 285 }
 286
 287 static void
 288 _tdm_server_vblank_cb_set_enable_fake(struct wl_client *client, struct wl_resource *resource, uint32_t enable_fake)
 289 {
 290         tdm_server_vblank_info *vblank_info = wl_resource_get_user_data(resource);
 291
 292         tdm_vblank_set_enable_fake(vblank_info->vblank, enable_fake);
 293 }
 294
 295 static void
 296 _tdm_server_vblank_cb_wait_vblank(struct wl_client *client, struct wl_resource *resource,
 297                                                                   uint32_t interval, uint32_t req_id, uint32_t req_sec, uint32_t req_usec)
 298 {
 299         tdm_server_vblank_info *vblank_info = wl_resource_get_user_data(resource);
 300         tdm_server_output_info *output_info = vblank_info->output_info;
 301         tdm_private_server *private_server = output_info->private_server;
 302         tdm_server_wait_info *wait_info;
 303         unsigned int enable_fake = 0;
 304         tdm_error ret;
 305
 306         TDM_TRACE_COUNT(ServerWaitVBlank, req_id);
 307
 308         wait_info = calloc(1, sizeof * wait_info);
 309         if (!wait_info) {
 310                 TDM_ERR("alloc failed");
 311                 ret = TDM_ERROR_OUT_OF_MEMORY;
 312                 goto wait_failed;
 313         }
 314
 315         LIST_ADDTAIL(&wait_info->link, &private_server->wait_list);
 316         wait_info->vblank_info = vblank_info;
 317         wait_info->req_id = req_id;
 318
 319         if (tdm_debug_module & TDM_DEBUG_VBLANK)
 320                 TDM_INFO("req_id(%d) wait", req_id);
 321
 322         ret = tdm_vblank_wait(vblank_info->vblank, req_sec, req_usec, interval, _tdm_server_cb_vblank, wait_info);
 323
 324         tdm_vblank_get_enable_fake(vblank_info->vblank, &enable_fake);
 325         if (!enable_fake && ret == TDM_ERROR_DPMS_OFF)
 326                 goto wait_failed;
 327
 328         TDM_GOTO_IF_FAIL(ret == TDM_ERROR_NONE, wait_failed);
 329
 330         return;
 331 wait_failed:
 332         wl_tdm_vblank_send_done(vblank_info->resource, req_id, 0, 0, 0, ret);
 333         if (wait_info)
 334                 destroy_wait(wait_info);
 335 }
 336
 337 static void
 338 _tdm_server_vblank_cb_wait_vblank_seq(struct wl_client *client, struct wl_resource *resource,
 339                                                                           uint32_t sequence, uint32_t req_id, uint32_t req_sec, uint32_t req_usec)
 340 {
 341         tdm_server_vblank_info *vblank_info = wl_resource_get_user_data(resource);
 342         tdm_server_output_info *output_info = vblank_info->output_info;
 343         tdm_private_server *private_server = output_info->private_server;
 344         tdm_server_wait_info *wait_info;
 345         unsigned int enable_fake = 0;
 346         tdm_error ret;
 347
 348         TDM_TRACE_COUNT(ServerWaitVBlank, req_id);
 349
 350         wait_info = calloc(1, sizeof * wait_info);
 351         if (!wait_info) {
 352                 TDM_ERR("alloc failed");
 353                 ret = TDM_ERROR_OUT_OF_MEMORY;
 354                 goto wait_failed;
 355         }
 356
 357         LIST_ADDTAIL(&wait_info->link, &private_server->wait_list);
 358         wait_info->vblank_info = vblank_info;
 359         wait_info->req_id = req_id;
 360
 361         if (tdm_debug_module & TDM_DEBUG_VBLANK)
 362                 TDM_INFO("req_id(%d) wait", req_id);
 363
 364         ret = tdm_vblank_wait_seq(vblank_info->vblank, req_sec, req_usec, sequence, _tdm_server_cb_vblank, wait_info);
 365
 366         tdm_vblank_get_enable_fake(vblank_info->vblank, &enable_fake);
 367         if (!enable_fake && ret == TDM_ERROR_DPMS_OFF)
 368                 goto wait_failed;
 369
 370         TDM_GOTO_IF_FAIL(ret == TDM_ERROR_NONE, wait_failed);
 371
 372         return;
 373 wait_failed:
 374         wl_tdm_vblank_send_done(vblank_info->resource, req_id, 0, 0, 0, ret);
 375         if (wait_info)
 376                 destroy_wait(wait_info);
 377 }
 378
 379 static const struct wl_tdm_vblank_interface tdm_vblank_implementation = {
 380         _tdm_server_vblank_cb_destroy,
 381         _tdm_server_vblank_cb_set_name,
 382         _tdm_server_vblank_cb_set_fps,
 383         _tdm_server_vblank_cb_set_offset,
 384         _tdm_server_vblank_cb_set_enable_fake,
 385         _tdm_server_vblank_cb_wait_vblank,
 386         _tdm_server_vblank_cb_wait_vblank_seq,
 387 };
 388
 389 static void
 390 _tdm_server_output_cb_destroy(struct wl_client *client, struct wl_resource *resource)
 391 {
 392         wl_resource_destroy(resource);
 393 }
 394
 395 static void
 396 _tdm_server_output_cb_create_vblank(struct wl_client *client, struct wl_resource *resource, uint32_t id)
 397 {
 398         tdm_server_output_info *output_info = wl_resource_get_user_data(resource);
 399         tdm_private_server *private_server = output_info->private_server;
 400         tdm_private_loop *private_loop = private_server->private_loop;
 401         struct wl_resource *vblank_resource;
 402         tdm_vblank *vblank;
 403         tdm_server_vblank_info *vblank_info;
 404
 405         vblank_resource =
 406                 wl_resource_create(client, &wl_tdm_vblank_interface,
 407                                                    wl_resource_get_version(resource), id);
 408         if (!vblank_resource) {
 409                 wl_resource_post_no_memory(resource);
 410                 TDM_ERR("wl_resource_create failed");
 411                 return;
 412         }
 413
 414         vblank = tdm_vblank_create(private_loop->dpy, output_info->output, NULL);
 415         if (!vblank) {
 416                 wl_resource_post_no_memory(resource);
 417                 wl_resource_destroy(vblank_resource);
 418                 TDM_ERR("tdm_vblank_create failed");
 419                 return;
 420         }
 421
 422         vblank_info = calloc(1, sizeof * vblank_info);
 423         if (!vblank_info) {
 424                 wl_resource_post_no_memory(resource);
 425                 wl_resource_destroy(vblank_resource);
 426                 tdm_vblank_destroy(vblank);
 427                 TDM_ERR("alloc failed");
 428                 return;
 429         }
 430
 431         LIST_ADDTAIL(&vblank_info->link, &output_info->vblank_list);
 432         vblank_info->output_info = output_info;
 433         vblank_info->resource = vblank_resource;
 434         vblank_info->vblank = vblank;
 435
 436         tdm_vblank_set_resource(vblank, vblank_resource);
 437
 438         wl_resource_set_implementation(vblank_resource, &tdm_vblank_implementation,
 439                                                                    vblank_info, destroy_vblank_callback);
 440
 441         return;
 442 }
 443
 444 static void
 445 _tdm_server_output_cb_watch_output_changes(struct wl_client *client, struct wl_resource *resource, unsigned int enable)
 446 {
 447         tdm_server_output_info *output_info = wl_resource_get_user_data(resource);
 448
 449         TDM_RETURN_IF_FAIL(output_info != NULL);
 450
 451         output_info->watch_output_changes = enable;
 452 }
 453
 454 static const struct wl_tdm_output_interface tdm_output_implementation = {
 455         _tdm_server_output_cb_destroy,
 456         _tdm_server_output_cb_create_vblank,
 457         _tdm_server_output_cb_watch_output_changes,
 458 };
 459
 460 static void
 461 destroy_output_callback(struct wl_resource *resource)
 462 {
 463         tdm_server_output_info *output_info = wl_resource_get_user_data(resource);
 464         tdm_server_vblank_info *v = NULL, *vv = NULL;
 465
 466         TDM_RETURN_IF_FAIL(output_info != NULL);
 467
 468         tdm_output_remove_change_handler(output_info->output,
 469                                                                          _tdm_server_cb_output_change, output_info);
 470
 471         LIST_FOR_EACH_ENTRY_SAFE(v, vv, &output_info->vblank_list, link) {
 472                 wl_resource_destroy(v->resource);
 473         }
 474
 475         LIST_DEL(&output_info->link);
 476         free(output_info);
 477 }
 478
 479 static void
 480 _tdm_server_cb_create_output(struct wl_client *client, struct wl_resource *resource,
 481                                                          const char *name, uint32_t id)
 482 {
 483         tdm_private_server *private_server = wl_resource_get_user_data(resource);
 484         tdm_server_output_info *output_info;
 485         struct wl_resource *output_resource = NULL;
 486         tdm_output *output;
 487         const tdm_output_mode *mode = NULL;
 488         tdm_output_dpms dpms_value;
 489         tdm_output_conn_status status;
 490
 491         output = _tdm_server_find_output(private_server, name);
 492         if (!output) {
 493                 TDM_ERR("There is no '%s' output", name);
 494                 wl_resource_post_error(resource, WL_DISPLAY_ERROR_INVALID_OBJECT,
 495                                                            "There is no '%s' output", name);
 496                 return;
 497         }
 498
 499         tdm_output_get_mode(output, &mode);
 500         if (!mode) {
 501                 TDM_ERR("no mode for '%s' output", name);
 502                 wl_resource_post_error(resource, WL_DISPLAY_ERROR_INVALID_OBJECT,
 503                                                            "no mode for '%s' output", name);
 504                 return;
 505         }
 506
 507         tdm_output_get_dpms(output, &dpms_value);
 508         tdm_output_get_conn_status(output, &status);
 509
 510         output_resource =
 511                 wl_resource_create(client, &wl_tdm_output_interface,
 512                                                    wl_resource_get_version(resource), id);
 513         if (!output_resource) {
 514                 wl_resource_post_no_memory(resource);
 515                 TDM_ERR("wl_resource_create failed");
 516                 return;
 517         }
 518
 519         output_info = calloc(1, sizeof * output_info);
 520         if (!output_info) {
 521                 wl_resource_post_no_memory(resource);
 522                 wl_resource_destroy(output_resource);
 523                 TDM_ERR("alloc failed");
 524                 return;
 525         }
 526
 527         LIST_ADDTAIL(&output_info->link, &private_server->output_list);
 528         output_info->private_server = private_server;
 529         output_info->resource = output_resource;
 530         output_info->output = output;
 531         LIST_INITHEAD(&output_info->vblank_list);
 532
 533         tdm_output_add_change_handler(output, _tdm_server_cb_output_change, output_info);
 534
 535         wl_resource_set_implementation(output_resource, &tdm_output_implementation,
 536                                                                    output_info, destroy_output_callback);
 537
 538         wl_tdm_output_send_mode(output_resource, mode->hdisplay, mode->vdisplay, mode->vrefresh);
 539         wl_tdm_output_send_dpms(output_resource, dpms_value);
 540         wl_tdm_output_send_connection(output_resource, status);
 541 }
 542
 543 static void
 544 _tdm_server_cb_debug(struct wl_client *client, struct wl_resource *resource, const char *options)
 545 {
 546         tdm_private_server *private_server = wl_resource_get_user_data(resource);
 547         tdm_private_loop *private_loop = private_server->private_loop;
 548         char message[TDM_SERVER_REPLY_MSG_LEN];
 549         int size = sizeof(message);
 550         uid_t uid;
 551
 552         wl_client_get_credentials(client, NULL, &uid, NULL);
 553
 554         if (uid != 0) {
 555                 snprintf(message, size, "tdm-monitor: SHOULD be a superuser.\n");
 556                 TDM_ERR("%s", message);
 557         } else {
 558                 tdm_monitor_server_command(private_loop->dpy, options, message, &size);
 559         }
 560
 561         wl_tdm_send_debug_done(resource, message);
 562 }
 563
 564 static void
 565 _tdm_server_cb_set_client_vblank_fps(struct wl_client *client, struct wl_resource *resource,
 566                                                                          unsigned int pid, const char *name, unsigned int fps)
 567 {
 568         tdm_error ret = tdm_vblank_set_client_vblank_fps(pid, name, fps);
 569         TDM_RETURN_IF_FAIL(ret == TDM_ERROR_NONE);
 570
 571         TDM_INFO("'%s' vblank fps(PID: '%u'): %u", name, pid, fps);
 572 }
 573
 574 static const struct wl_tdm_interface tdm_implementation = {
 575         _tdm_server_cb_debug,
 576         _tdm_server_cb_create_output,
 577         _tdm_server_cb_set_client_vblank_fps,
 578 };
 579
 580 static void
 581 destroy_client(struct wl_resource *resource)
 582 {
 583         tdm_server_client_info *c = NULL, *cc = NULL;
 584         struct wl_client *client;
 585         pid_t pid = -1;
 586
 587         client = wl_resource_get_client(resource);
 588         TDM_RETURN_IF_FAIL(client != NULL);
 589
 590         wl_client_get_credentials(client, &pid, NULL, NULL);
 591
 592         LIST_FOR_EACH_ENTRY_SAFE(c, cc, &client_list, link) {
 593                 if (c->pid == pid) {
 594                         LIST_DEL(&c->link);
 595                         free(c);
 596                         return;
 597                 }
 598         }
 599 }
 600
 601 static void
 602 _tdm_server_bind(struct wl_client *client, void *data,
 603                                  uint32_t version, uint32_t id)
 604 {
 605         struct wl_resource *resource;
 606         tdm_server_client_info *cinfo;
 607
 608         resource = wl_resource_create(client, &wl_tdm_interface, version, id);
 609         if (!resource) {
 610                 wl_client_post_no_memory(client);
 611                 return;
 612         }
 613
 614         cinfo = calloc(1, sizeof(tdm_server_client_info));
 615         if (!cinfo) {
 616                 wl_client_post_no_memory(client);
 617                 wl_resource_destroy(resource);
 618                 return;
 619         }
 620
 621         LIST_ADDTAIL(&cinfo->link, &client_list);
 622         wl_client_get_credentials(client, &cinfo->pid, NULL, NULL);
 623         _tdm_server_get_process_name(cinfo->pid, cinfo->name, TDM_NAME_LEN);
 624
 625         wl_resource_set_implementation(resource, &tdm_implementation, data, destroy_client);
 626 }
 627
 628 INTERN tdm_error
 629 tdm_server_init(tdm_private_loop *private_loop)
 630 {
 631         tdm_private_server *private_server;
 632
 633         TDM_RETURN_VAL_IF_FAIL(private_loop, TDM_ERROR_OPERATION_FAILED);
 634         TDM_RETURN_VAL_IF_FAIL(private_loop->wl_display, TDM_ERROR_OPERATION_FAILED);
 635
 636         if (private_loop->private_server)
 637                 return TDM_ERROR_NONE;
 638
 639         if (wl_display_add_socket(private_loop->wl_display, "tdm-socket")) {
 640                 TDM_ERR("createing a tdm-socket failed");
 641                 return TDM_ERROR_OPERATION_FAILED;
 642         }
 643
 644         private_server = calloc(1, sizeof * private_server);
 645         if (!private_server) {
 646                 TDM_ERR("alloc failed");
 647                 return TDM_ERROR_OUT_OF_MEMORY;
 648         }
 649
 650         LIST_INITHEAD(&private_server->output_list);
 651         LIST_INITHEAD(&private_server->wait_list);
 652
 653         if (!wl_global_create(private_loop->wl_display, &wl_tdm_interface, 1,
 654                                                   private_server, _tdm_server_bind)) {
 655                 TDM_ERR("creating a global resource failed");
 656                 free(private_server);
 657                 return TDM_ERROR_OUT_OF_MEMORY;
 658         }
 659
 660         private_server->private_loop = private_loop;
 661         private_loop->private_server = private_server;
 662         keep_private_server = private_server;
 663
 664         LIST_INITHEAD(&client_list);
 665
 666         return TDM_ERROR_NONE;
 667 }
 668
 669 INTERN void
 670 tdm_server_deinit(tdm_private_loop *private_loop)
 671 {
 672         tdm_server_output_info *o = NULL, *oo = NULL;
 673         tdm_server_wait_info *w = NULL, *ww = NULL;
 674         tdm_server_client_info *c = NULL, *cc = NULL;
 675         tdm_private_server *private_server;
 676
 677         if (!private_loop->private_server)
 678                 return;
 679
 680         private_server = private_loop->private_server;
 681
 682         LIST_FOR_EACH_ENTRY_SAFE(w, ww, &private_server->wait_list, link) {
 683                 destroy_wait(w);
 684         }
 685
 686         LIST_FOR_EACH_ENTRY_SAFE(o, oo, &private_server->output_list, link) {
 687                 wl_resource_destroy(o->resource);
 688         }
 689
 690         free(private_server);
 691         private_loop->private_server = NULL;
 692         keep_private_server = NULL;
 693
 694         LIST_FOR_EACH_ENTRY_SAFE(c, cc, &client_list, link) {
 695                 LIST_DEL(&c->link);
 696                 free(c);
 697         }
 698 }
 699
 700 INTERN const char*
 701 tdm_server_get_client_name(pid_t pid)
 702 {
 703         tdm_server_client_info *c = NULL;
 704
 705         LIST_FOR_EACH_ENTRY(c, &client_list, link) {
 706                 if (c->pid == pid)
 707                         return (const char*)c->name;
 708         }
 709
 710         return NULL;
 711 }