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-server-protocol.h>
  41
  42 #include "tdm_private.h"
  43
  44 /* CAUTION:
  45  * - tdm server doesn't care about thread things.
  46  * - DO NOT use the TDM internal functions here.
  47  *     However, the internal function which does lock/unlock the mutex of
  48  *     private_display in itself can be called.
  49  * - DO NOT use the tdm_private_display structure here.
  50  * - The callback function things can be called in main thread.
  51  */
  52
  53 struct _tdm_private_server {
  54         tdm_private_loop *private_loop;
  55         struct list_head output_list;
  56         struct list_head wait_list;
  57 };
  58
  59 typedef struct _tdm_server_output_info {
  60         struct list_head link;
  61         tdm_private_server *private_server;
  62         struct wl_resource *resource;
  63         tdm_output *output;
  64         struct list_head vblank_list;
  65         unsigned int watch_output_changes;
  66 } tdm_server_output_info;
  67
  68 typedef struct _tdm_server_vblank_info {
  69         struct list_head link;
  70         tdm_server_output_info *output_info;
  71         struct wl_resource *resource;
  72
  73         tdm_vblank *vblank;
  74         unsigned int stamp;
  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         double req_time;
  83 } tdm_server_wait_info;
  84
  85 typedef struct _tdm_server_client_info {
  86         struct list_head link;
  87         pid_t pid;
  88         char name[TDM_NAME_LEN];
  89         struct wl_resource *resource;
  90 } tdm_server_client_info;
  91
  92 static tdm_private_server *keep_private_server;
  93 static struct list_head client_list;
  94
  95 static void destroy_wait(tdm_server_wait_info *wait_info);
  96
  97 static void
  98 _tdm_server_get_process_name(pid_t pid, char *name, unsigned int size)
  99 {
 100         char proc[TDM_NAME_LEN], pname[TDM_NAME_LEN];
 101         FILE *h;
 102         size_t len;
 103
 104         snprintf(name, size, "Unknown");
 105
 106         snprintf(proc, TDM_NAME_LEN, "/proc/%d/cmdline", pid);
 107         h = fopen(proc, "r");
 108         if (!h)
 109                 return;
 110
 111         len = fread(pname, sizeof(char), TDM_NAME_LEN, h);
 112         if (len == 0) {
 113                 char *p = strncpy(pname, "NO NAME", sizeof(pname) - 1);
 114                 len = p - pname;
 115         }
 116         pname[len - 1] = '\0';
 117
 118         strncpy(name, pname, size - 1);
 119         name[size - 1] = '\0';
 120
 121         fclose(h);
 122 }
 123
 124 static tdm_output*
 125 _tdm_server_find_output(tdm_private_server *private_server, const char *name)
 126 {
 127         tdm_private_loop *private_loop = private_server->private_loop;
 128         tdm_output *found = NULL;
 129
 130         if (!strncasecmp(name, "primary", 7) || !strncasecmp(name, "default", 7))
 131                 found = tdm_display_get_output(private_loop->dpy, 0, NULL);
 132
 133         if (!found) {
 134                 int count = 0, i;
 135
 136                 tdm_display_get_output_count(private_loop->dpy, &count);
 137
 138                 for (i = 0; i < count; i++) {
 139                         tdm_output *output = tdm_display_get_output(private_loop->dpy, i, NULL);
 140                         tdm_output_conn_status status;
 141                         const char *model = NULL;
 142                         tdm_error ret;
 143
 144                         ret = tdm_output_get_conn_status(output, &status);
 145                         if (ret || status == TDM_OUTPUT_CONN_STATUS_DISCONNECTED)
 146                                 continue;
 147
 148                         ret = tdm_output_get_model_info(output, NULL, &model, NULL);
 149                         if (ret || !model)
 150                                 continue;
 151
 152                         if (strncmp(model, name, TDM_NAME_LEN))
 153                                 continue;
 154
 155                         found = output;
 156                         break;
 157                 }
 158         }
 159
 160         return found;
 161 }
 162
 163 /* LCOV_EXCL_START */
 164 static void
 165 _tdm_server_send_done(tdm_server_wait_info *wait_info, tdm_error error,
 166                                           unsigned int sequence, unsigned int tv_sec, unsigned int tv_usec)
 167 {
 168         tdm_server_wait_info *found;
 169         tdm_server_vblank_info *vblank_info;
 170
 171         if (!keep_private_server)
 172                 return;
 173
 174         LIST_FIND_ITEM(wait_info, &keep_private_server->wait_list,
 175                                    tdm_server_wait_info, link, found);
 176         if (!found) {
 177                 TDM_DBG("wait_info(%p) is destroyed", wait_info);
 178                 return;
 179         }
 180
 181         if (tdm_debug_module & TDM_DEBUG_VBLANK)
 182                 TDM_DBG("req_id(%d) done", wait_info->req_id);
 183
 184         vblank_info = wait_info->vblank_info;
 185         wl_tdm_vblank_send_done(vblank_info->resource, wait_info->req_id,
 186                                                         sequence, tv_sec, tv_usec, error);
 187
 188         destroy_wait(wait_info);
 189 }
 190 /* LCOV_EXCL_STOP */
 191
 192 /* LCOV_EXCL_START */
 193 static void
 194 _tdm_server_cb_vblank(tdm_vblank *vblank, tdm_error error, unsigned int sequence,
 195                                           unsigned int tv_sec, unsigned int tv_usec, void *user_data)
 196 {
 197         _tdm_server_send_done((tdm_server_wait_info*)user_data, error, sequence, tv_sec, tv_usec);
 198 }
 199 /* LCOV_EXCL_STOP */
 200
 201 /* LCOV_EXCL_START */
 202 static void
 203 _tdm_server_cb_output_change(tdm_output *output, tdm_output_change_type type,
 204                                                          tdm_value value, void *user_data)
 205 {
 206         tdm_server_output_info *output_info = user_data;
 207         struct wl_client *client;
 208         pid_t pid = 0;
 209
 210         TDM_RETURN_IF_FAIL(output_info != NULL);
 211
 212         client = wl_resource_get_client(output_info->resource);
 213         TDM_RETURN_IF_FAIL(client != NULL);
 214
 215         wl_client_get_credentials(client, &pid, NULL, NULL);
 216
 217         if (!output_info->watch_output_changes) {
 218                 TDM_DBG("skip sending the output changes: pid(%d)", (unsigned int)pid);
 219                 return;
 220         }
 221
 222         TDM_DBG("send the output changes: %d", (unsigned int)pid);
 223
 224         switch (type) {
 225         case TDM_OUTPUT_CHANGE_DPMS:
 226                 wl_tdm_output_send_dpms(output_info->resource, value.u32, TDM_ERROR_NONE);
 227                 break;
 228         case TDM_OUTPUT_CHANGE_CONNECTION:
 229                 wl_tdm_output_send_connection(output_info->resource, value.u32, TDM_ERROR_NONE);
 230                 break;
 231         default:
 232                 break;
 233         }
 234 }
 235 /* LCOV_EXCL_STOP */
 236
 237 static void
 238 destroy_wait(tdm_server_wait_info *wait_info)
 239 {
 240         LIST_DEL(&wait_info->link);
 241         free(wait_info);
 242 }
 243
 244 static void
 245 destroy_vblank_callback(struct wl_resource *resource)
 246 {
 247         tdm_server_vblank_info *vblank_info = wl_resource_get_user_data(resource);
 248         tdm_server_wait_info *w = NULL, *ww = NULL;
 249
 250         TDM_RETURN_IF_FAIL(vblank_info != NULL);
 251
 252         LIST_DEL(&vblank_info->link);
 253
 254         if (vblank_info->vblank)
 255                 tdm_vblank_destroy(vblank_info->vblank);
 256
 257         LIST_FOR_EACH_ENTRY_SAFE(w, ww, &keep_private_server->wait_list, link) {
 258                 if (w->vblank_info == vblank_info)
 259                         destroy_wait(w);
 260         }
 261
 262         free(vblank_info);
 263 }
 264
 265 /* LCOV_EXCL_START */
 266 static void
 267 _tdm_server_vblank_cb_destroy(struct wl_client *client, struct wl_resource *resource)
 268 {
 269         wl_resource_destroy(resource);
 270 }
 271 /* LCOV_EXCL_STOP */
 272
 273 /* LCOV_EXCL_START */
 274 static void
 275 _tdm_server_vblank_cb_set_name(struct wl_client *client, struct wl_resource *resource, const char *name)
 276 {
 277         tdm_server_vblank_info *vblank_info = wl_resource_get_user_data(resource);
 278
 279         tdm_vblank_set_name(vblank_info->vblank, name);
 280 }
 281 /* LCOV_EXCL_STOP */
 282
 283 /* LCOV_EXCL_START */
 284 static void
 285 _tdm_server_vblank_cb_set_fps(struct wl_client *client, struct wl_resource *resource, uint32_t fps)
 286 {
 287         tdm_server_vblank_info *vblank_info = wl_resource_get_user_data(resource);
 288
 289         tdm_vblank_set_fps(vblank_info->vblank, fps);
 290 }
 291 /* LCOV_EXCL_STOP */
 292
 293 /* LCOV_EXCL_START */
 294 static void
 295 _tdm_server_vblank_cb_set_offset(struct wl_client *client, struct wl_resource *resource, int32_t offset)
 296 {
 297         tdm_server_vblank_info *vblank_info = wl_resource_get_user_data(resource);
 298
 299         tdm_vblank_set_offset(vblank_info->vblank, offset);
 300 }
 301 /* LCOV_EXCL_STOP */
 302
 303 static void
 304 _tdm_server_vblank_cb_set_enable_fake(struct wl_client *client, struct wl_resource *resource, uint32_t enable_fake)
 305 {
 306         tdm_server_vblank_info *vblank_info = wl_resource_get_user_data(resource);
 307
 308         tdm_vblank_set_enable_fake(vblank_info->vblank, enable_fake);
 309 }
 310
 311 static void
 312 _tdm_server_vblank_cb_wait_vblank(struct wl_client *client, struct wl_resource *resource,
 313                                                                   uint32_t interval, uint32_t req_id, uint32_t req_sec, uint32_t req_usec)
 314 {
 315         tdm_server_vblank_info *vblank_info = wl_resource_get_user_data(resource);
 316         tdm_server_output_info *output_info = vblank_info->output_info;
 317         tdm_private_server *private_server = output_info->private_server;
 318         tdm_server_wait_info *wait_info;
 319         unsigned int enable_fake = 0;
 320         tdm_error ret;
 321
 322         wait_info = calloc(1, sizeof * wait_info);
 323         if (!wait_info) {
 324                 /* LCOV_EXCL_START */
 325
 326                 TDM_ERR("alloc failed");
 327                 ret = TDM_ERROR_OUT_OF_MEMORY;
 328                 goto wait_failed;
 329
 330                 /* LCOV_EXCL_STOP */
 331         }
 332
 333         LIST_ADDTAIL(&wait_info->link, &private_server->wait_list);
 334         wait_info->vblank_info = vblank_info;
 335         wait_info->req_id = req_id;
 336         wait_info->req_time = TDM_TIME(req_sec, req_usec);
 337
 338         if (tdm_debug_module & TDM_DEBUG_VBLANK)
 339                 TDM_DBG("req_id(%d) wait", req_id);
 340
 341         ret = tdm_vblank_wait(vblank_info->vblank, req_sec, req_usec, interval, _tdm_server_cb_vblank, wait_info);
 342
 343         tdm_vblank_get_enable_fake(vblank_info->vblank, &enable_fake);
 344         if (!enable_fake && ret == TDM_ERROR_DPMS_OFF)
 345                 goto wait_failed;
 346
 347         TDM_GOTO_IF_FAIL(ret == TDM_ERROR_NONE, wait_failed);
 348
 349         return;
 350 wait_failed:
 351         /* LCOV_EXCL_START */
 352
 353         wl_tdm_vblank_send_done(vblank_info->resource, req_id, 0, 0, 0, ret);
 354         if (wait_info)
 355                 destroy_wait(wait_info);
 356
 357         /* LCOV_EXCL_STOP */
 358 }
 359
 360 static void
 361 _tdm_server_vblank_cb_wait_vblank_seq(struct wl_client *client, struct wl_resource *resource,
 362                                                                           uint32_t sequence, uint32_t req_id, uint32_t req_sec, uint32_t req_usec)
 363 {
 364         tdm_server_vblank_info *vblank_info = wl_resource_get_user_data(resource);
 365         tdm_server_output_info *output_info = vblank_info->output_info;
 366         tdm_private_server *private_server = output_info->private_server;
 367         tdm_server_wait_info *wait_info;
 368         unsigned int enable_fake = 0;
 369         tdm_error ret;
 370
 371         wait_info = calloc(1, sizeof * wait_info);
 372         if (!wait_info) {
 373                 /* LCOV_EXCL_START */
 374
 375                 TDM_ERR("alloc failed");
 376                 ret = TDM_ERROR_OUT_OF_MEMORY;
 377                 goto wait_failed;
 378
 379                 /* LCOV_EXCL_STOP */
 380         }
 381
 382         LIST_ADDTAIL(&wait_info->link, &private_server->wait_list);
 383         wait_info->vblank_info = vblank_info;
 384         wait_info->req_id = req_id;
 385         wait_info->req_time = TDM_TIME(req_sec, req_usec);
 386
 387         if (tdm_debug_module & TDM_DEBUG_VBLANK)
 388                 TDM_DBG("req_id(%d) wait", req_id);
 389
 390         ret = tdm_vblank_wait_seq(vblank_info->vblank, req_sec, req_usec, sequence, _tdm_server_cb_vblank, wait_info);
 391
 392         tdm_vblank_get_enable_fake(vblank_info->vblank, &enable_fake);
 393         if (!enable_fake && ret == TDM_ERROR_DPMS_OFF)
 394                 goto wait_failed;
 395
 396         TDM_GOTO_IF_FAIL(ret == TDM_ERROR_NONE, wait_failed);
 397
 398         return;
 399 wait_failed:
 400         /* LCOV_EXCL_START */
 401
 402         wl_tdm_vblank_send_done(vblank_info->resource, req_id, 0, 0, 0, ret);
 403         if (wait_info)
 404                 destroy_wait(wait_info);
 405
 406         /* LCOV_EXCL_STOP */
 407 }
 408
 409 static const struct wl_tdm_vblank_interface tdm_vblank_implementation = {
 410         _tdm_server_vblank_cb_destroy,
 411         _tdm_server_vblank_cb_set_name,
 412         _tdm_server_vblank_cb_set_fps,
 413         _tdm_server_vblank_cb_set_offset,
 414         _tdm_server_vblank_cb_set_enable_fake,
 415         _tdm_server_vblank_cb_wait_vblank,
 416         _tdm_server_vblank_cb_wait_vblank_seq,
 417 };
 418
 419 /* LCOV_EXCL_START */
 420 static void
 421 _tdm_server_output_cb_destroy(struct wl_client *client, struct wl_resource *resource)
 422 {
 423         wl_resource_destroy(resource);
 424 }
 425 /* LCOV_EXCL_STOP */
 426
 427 static void
 428 _tdm_server_output_cb_create_vblank(struct wl_client *client, struct wl_resource *resource, uint32_t id)
 429 {
 430         tdm_server_output_info *output_info = wl_resource_get_user_data(resource);
 431         tdm_private_server *private_server = output_info->private_server;
 432         tdm_private_loop *private_loop = private_server->private_loop;
 433         struct wl_resource *vblank_resource;
 434         tdm_vblank *vblank;
 435         tdm_server_vblank_info *vblank_info;
 436
 437         vblank_resource =
 438                 wl_resource_create(client, &wl_tdm_vblank_interface,
 439                                                    wl_resource_get_version(resource), id);
 440         if (!vblank_resource) {
 441                 /* LCOV_EXCL_START */
 442
 443                 wl_resource_post_no_memory(resource);
 444                 TDM_ERR("wl_resource_create failed");
 445                 return;
 446
 447                 /* LCOV_EXCL_STOP */
 448         }
 449
 450         vblank = tdm_vblank_create(private_loop->dpy, output_info->output, NULL);
 451         if (!vblank) {
 452                 /* LCOV_EXCL_START */
 453
 454                 wl_resource_post_no_memory(resource);
 455                 wl_resource_destroy(vblank_resource);
 456                 TDM_ERR("tdm_vblank_create failed");
 457                 return;
 458
 459                 /* LCOV_EXCL_STOP */
 460         }
 461
 462         vblank_info = calloc(1, sizeof * vblank_info);
 463         if (!vblank_info) {
 464                 /* LCOV_EXCL_START */
 465
 466                 wl_resource_post_no_memory(resource);
 467                 wl_resource_destroy(vblank_resource);
 468                 tdm_vblank_destroy(vblank);
 469                 TDM_ERR("alloc failed");
 470                 return;
 471
 472                 /* LCOV_EXCL_STOP */
 473         }
 474
 475         LIST_ADDTAIL(&vblank_info->link, &output_info->vblank_list);
 476         vblank_info->output_info = output_info;
 477         vblank_info->resource = vblank_resource;
 478         vblank_info->vblank = vblank;
 479         vblank_info->stamp = (unsigned int)tdm_vblank_get_stamp(vblank);
 480
 481         tdm_vblank_set_resource(vblank, vblank_resource);
 482
 483         wl_resource_set_implementation(vblank_resource, &tdm_vblank_implementation,
 484                                                                    vblank_info, destroy_vblank_callback);
 485
 486         wl_tdm_vblank_send_stamp(vblank_info->resource, vblank_info->stamp);
 487
 488         if (tdm_ttrace_module & TDM_TTRACE_CLIENT) {
 489                 tdm_output *output = tdm_display_get_output(private_loop->dpy, tdm_ttrace_output, NULL);
 490                 if (output == output_info->output)
 491                         wl_tdm_vblank_send_ttrace(vblank_info->resource, 1);
 492         }
 493
 494         return;
 495 }
 496
 497 /* LCOV_EXCL_START */
 498 static void
 499 _tdm_server_output_cb_watch_output_changes(struct wl_client *client, struct wl_resource *resource, unsigned int enable)
 500 {
 501         tdm_server_output_info *output_info = wl_resource_get_user_data(resource);
 502
 503         TDM_RETURN_IF_FAIL(output_info != NULL);
 504
 505         output_info->watch_output_changes = enable;
 506 }
 507 /* LCOV_EXCL_STOP */
 508
 509 static void
 510 _tdm_server_output_cb_get_connection(struct wl_client *client, struct wl_resource *resource)
 511 {
 512         tdm_server_output_info *output_info = wl_resource_get_user_data(resource);
 513         tdm_output_conn_status status = TDM_OUTPUT_CONN_STATUS_DISCONNECTED;
 514         tdm_error ret;
 515
 516         TDM_RETURN_IF_FAIL(output_info != NULL);
 517
 518         ret = tdm_output_get_conn_status(output_info->output, &status);
 519         TDM_GOTO_IF_FAIL(ret != TDM_ERROR_NONE, failed);
 520
 521         wl_tdm_output_send_connection(output_info->resource, status, ret);
 522
 523         return;
 524
 525 failed:
 526         wl_tdm_output_send_connection(output_info->resource, TDM_OUTPUT_CONN_STATUS_DISCONNECTED, ret);
 527 }
 528
 529 static void
 530 _tdm_server_output_cb_get_mode(struct wl_client *client, struct wl_resource *resource)
 531 {
 532         tdm_server_output_info *output_info = wl_resource_get_user_data(resource);
 533         tdm_output_conn_status status = TDM_OUTPUT_CONN_STATUS_DISCONNECTED;
 534         tdm_error ret;
 535
 536         TDM_RETURN_IF_FAIL(output_info != NULL);
 537
 538         ret = tdm_output_get_conn_status(output_info->output, &status);
 539         TDM_GOTO_IF_FAIL(ret != TDM_ERROR_NONE, failed);
 540
 541         if (status != TDM_OUTPUT_CONN_STATUS_DISCONNECTED) {
 542                 const tdm_output_mode *mode = NULL;
 543                 unsigned int hdisplay, vdisplay, vrefresh;
 544
 545                 ret = tdm_output_get_mode(output_info->output, &mode);
 546                 TDM_GOTO_IF_FAIL(ret != TDM_ERROR_NONE, failed);
 547
 548                 hdisplay = (mode) ? mode->hdisplay : 0;
 549                 vdisplay = (mode) ? mode->vdisplay : 0;
 550                 vrefresh = (mode) ? mode->vrefresh : 0;
 551
 552                 wl_tdm_output_send_mode(output_info->resource, hdisplay, vdisplay, vrefresh, ret);
 553         } else {
 554                 wl_tdm_output_send_mode(output_info->resource, 0, 0, 0, TDM_ERROR_OUTPUT_DISCONNECTED);
 555         }
 556
 557         return;
 558 failed:
 559         wl_tdm_output_send_mode(output_info->resource, 0, 0, 0, ret);
 560 }
 561
 562 static void
 563 _tdm_server_output_cb_get_dpms(struct wl_client *client, struct wl_resource *resource)
 564 {
 565         tdm_server_output_info *output_info = wl_resource_get_user_data(resource);
 566         tdm_output_conn_status status = TDM_OUTPUT_CONN_STATUS_DISCONNECTED;
 567         tdm_error ret;
 568
 569         TDM_RETURN_IF_FAIL(output_info != NULL);
 570
 571         ret = tdm_output_get_conn_status(output_info->output, &status);
 572         TDM_GOTO_IF_FAIL(ret != TDM_ERROR_NONE, failed);
 573
 574         if (status != TDM_OUTPUT_CONN_STATUS_DISCONNECTED) {
 575                 tdm_output_dpms dpms_value = TDM_OUTPUT_DPMS_OFF;
 576
 577                 ret = tdm_output_get_dpms(output_info->output, &dpms_value);
 578                 TDM_GOTO_IF_FAIL(ret != TDM_ERROR_NONE, failed);
 579
 580                 wl_tdm_output_send_dpms(output_info->resource, dpms_value, ret);
 581         } else {
 582                 wl_tdm_output_send_dpms(output_info->resource, TDM_OUTPUT_DPMS_OFF, TDM_ERROR_OUTPUT_DISCONNECTED);
 583         }
 584
 585         return;
 586 failed:
 587         wl_tdm_output_send_dpms(output_info->resource, TDM_OUTPUT_DPMS_OFF, ret);
 588 }
 589
 590 static const struct wl_tdm_output_interface tdm_output_implementation = {
 591         _tdm_server_output_cb_destroy,
 592         _tdm_server_output_cb_create_vblank,
 593         _tdm_server_output_cb_watch_output_changes,
 594         _tdm_server_output_cb_get_connection,
 595         _tdm_server_output_cb_get_mode,
 596         _tdm_server_output_cb_get_dpms,
 597 };
 598
 599 static void
 600 destroy_output_callback(struct wl_resource *resource)
 601 {
 602         tdm_server_output_info *output_info = wl_resource_get_user_data(resource);
 603         tdm_server_vblank_info *v = NULL, *vv = NULL;
 604
 605         TDM_RETURN_IF_FAIL(output_info != NULL);
 606
 607         LIST_DEL(&output_info->link);
 608
 609         tdm_output_remove_change_handler(output_info->output,
 610                                                                          _tdm_server_cb_output_change, output_info);
 611
 612         LIST_FOR_EACH_ENTRY_SAFE(v, vv, &output_info->vblank_list, link) {
 613                 wl_resource_destroy(v->resource);
 614         }
 615
 616         free(output_info);
 617 }
 618
 619 static void
 620 _tdm_server_cb_create_output(struct wl_client *client, struct wl_resource *resource,
 621                                                          const char *name, uint32_t id)
 622 {
 623         tdm_private_server *private_server = wl_resource_get_user_data(resource);
 624         tdm_server_output_info *output_info;
 625         struct wl_resource *output_resource = NULL;
 626         tdm_output *output;
 627         tdm_output_conn_status status = TDM_OUTPUT_CONN_STATUS_DISCONNECTED;
 628         tdm_error ret;
 629
 630         output = _tdm_server_find_output(private_server, name);
 631         if (!output) {
 632                 /* LCOV_EXCL_START */
 633
 634                 TDM_ERR("There is no '%s' output", name);
 635                 wl_resource_post_error(resource, WL_DISPLAY_ERROR_INVALID_OBJECT,
 636                                                            "There is no '%s' output", name);
 637                 return;
 638
 639                 /* LCOV_EXCL_STOP */
 640         }
 641
 642         output_resource =
 643                 wl_resource_create(client, &wl_tdm_output_interface,
 644                                                    wl_resource_get_version(resource), id);
 645         if (!output_resource) {
 646                 /* LCOV_EXCL_START */
 647
 648                 wl_resource_post_no_memory(resource);
 649                 TDM_ERR("wl_resource_create failed");
 650                 return;
 651
 652                 /* LCOV_EXCL_STOP */
 653         }
 654
 655         output_info = calloc(1, sizeof * output_info);
 656         if (!output_info) {
 657                 /* LCOV_EXCL_START */
 658
 659                 wl_resource_post_no_memory(resource);
 660                 wl_resource_destroy(output_resource);
 661                 TDM_ERR("alloc failed");
 662                 return;
 663
 664                 /* LCOV_EXCL_STOP */
 665         }
 666
 667         LIST_ADDTAIL(&output_info->link, &private_server->output_list);
 668         output_info->private_server = private_server;
 669         output_info->resource = output_resource;
 670         output_info->output = output;
 671         LIST_INITHEAD(&output_info->vblank_list);
 672
 673         tdm_output_add_change_handler(output, _tdm_server_cb_output_change, output_info);
 674
 675         wl_resource_set_implementation(output_resource, &tdm_output_implementation,
 676                                                                    output_info, destroy_output_callback);
 677
 678         ret = tdm_output_get_conn_status(output, &status);
 679         wl_tdm_output_send_connection(output_resource, status, ret);
 680
 681         if (status != TDM_OUTPUT_CONN_STATUS_DISCONNECTED) {
 682                 tdm_output_dpms dpms_value = TDM_OUTPUT_DPMS_OFF;
 683                 const tdm_output_mode *mode = NULL;
 684                 unsigned int hdisplay, vdisplay, vrefresh;
 685
 686                 ret = tdm_output_get_mode(output, &mode);
 687                 hdisplay = (mode) ? mode->hdisplay : 0;
 688                 vdisplay = (mode) ? mode->vdisplay : 0;
 689                 vrefresh = (mode) ? mode->vrefresh : 0;
 690                 wl_tdm_output_send_mode(output_resource, hdisplay, vdisplay, vrefresh, ret);
 691
 692                 ret = tdm_output_get_dpms(output, &dpms_value);
 693                 wl_tdm_output_send_dpms(output_resource, dpms_value, ret);
 694         } else {
 695                 wl_tdm_output_send_mode(output_resource, 0, 0, 0, TDM_ERROR_OUTPUT_DISCONNECTED);
 696                 wl_tdm_output_send_dpms(output_resource, TDM_OUTPUT_DPMS_OFF, TDM_ERROR_OUTPUT_DISCONNECTED);
 697         }
 698 }
 699
 700 /* LCOV_EXCL_START */
 701 static void
 702 _tdm_server_cb_debug(struct wl_client *client, struct wl_resource *resource, const char *options)
 703 {
 704         tdm_private_server *private_server = wl_resource_get_user_data(resource);
 705         tdm_private_loop *private_loop = private_server->private_loop;
 706         char message[TDM_SERVER_REPLY_MSG_LEN];
 707         char *m;
 708         int len = sizeof(message), size;
 709         uid_t uid;
 710
 711         wl_client_get_credentials(client, NULL, &uid, NULL);
 712
 713         if (uid != 0) {
 714                 snprintf(message, len, "tdm-monitor: SHOULD be a superuser.\n");
 715                 TDM_ERR("%s", message);
 716         } else {
 717                 tdm_monitor_server_command(private_loop->dpy, options, message, &len);
 718         }
 719
 720         size = sizeof(message) - len;
 721         m = message;
 722
 723         wl_client_flush(client);
 724
 725         while (size > 0) {
 726                 char buffer[TDM_DEBUG_REPLY_MSG_LEN];
 727                 int copylen = TDM_MIN(size, sizeof(buffer) - 1);
 728
 729                 strncpy(buffer, m, copylen);
 730                 m += copylen;
 731                 size -= copylen;
 732
 733                 buffer[copylen] = '\0';
 734
 735                 wl_tdm_send_debug_message(resource, buffer);
 736         }
 737
 738         wl_tdm_send_debug_done(resource);
 739 }
 740 /* LCOV_EXCL_STOP */
 741
 742 static const struct wl_tdm_interface tdm_implementation = {
 743         _tdm_server_cb_debug,
 744         _tdm_server_cb_create_output,
 745 };
 746
 747 static void
 748 destroy_client(struct wl_resource *resource)
 749 {
 750         tdm_server_client_info *c = NULL, *cc = NULL;
 751         struct wl_client *client;
 752
 753         client = wl_resource_get_client(resource);
 754         TDM_RETURN_IF_FAIL(client != NULL);
 755
 756         LIST_FOR_EACH_ENTRY_SAFE(c, cc, &client_list, link) {
 757                 if (c->resource == resource) {
 758                         LIST_DEL(&c->link);
 759                         free(c);
 760                         return;
 761                 }
 762         }
 763 }
 764
 765 static void
 766 _tdm_server_bind(struct wl_client *client, void *data,
 767                                  uint32_t version, uint32_t id)
 768 {
 769         struct wl_resource *resource;
 770         tdm_server_client_info *cinfo;
 771
 772         resource = wl_resource_create(client, &wl_tdm_interface, version, id);
 773         if (!resource) {
 774                 /* LCOV_EXCL_START */
 775
 776                 wl_client_post_no_memory(client);
 777                 return;
 778
 779                 /* LCOV_EXCL_STOP */
 780         }
 781
 782         cinfo = calloc(1, sizeof(tdm_server_client_info));
 783         if (!cinfo) {
 784                 /* LCOV_EXCL_START */
 785
 786                 wl_client_post_no_memory(client);
 787                 wl_resource_destroy(resource);
 788                 return;
 789
 790                 /* LCOV_EXCL_STOP */
 791         }
 792
 793         cinfo->resource = resource;
 794
 795         LIST_ADDTAIL(&cinfo->link, &client_list);
 796         wl_client_get_credentials(client, &cinfo->pid, NULL, NULL);
 797         _tdm_server_get_process_name(cinfo->pid, cinfo->name, TDM_NAME_LEN);
 798
 799         wl_resource_set_implementation(resource, &tdm_implementation, data, destroy_client);
 800 }
 801
 802 static int
 803 _tdm_getgrnam_r(const char *name)
 804 {
 805         struct group *grp = NULL;
 806         struct group *grp_res = NULL;
 807         char* buf = NULL;
 808         size_t buf_len;
 809         int ret;
 810         int id;
 811
 812         buf_len = sysconf(_SC_GETGR_R_SIZE_MAX);
 813         if (buf_len == -1)
 814                 buf_len = 2048;
 815
 816         buf = calloc(1, buf_len * sizeof(char));
 817         if (!buf) {
 818                 TDM_ERR("creating buffer failed");
 819                 goto failed;
 820         }
 821
 822         grp = calloc(1, sizeof(struct group));
 823         if (!grp) {
 824                 TDM_ERR("creating group failed");
 825                 goto failed;
 826         }
 827
 828         ret = getgrnam_r(name, grp, buf, buf_len, &grp_res);
 829         if (ret < 0) {
 830                 TDM_ERR("getgrnam_r failed errno:%d(%m)", ret);
 831                 goto failed;
 832         }
 833
 834         if (grp_res == NULL) {
 835                 TDM_ERR("finding name:%s group failed", name);
 836                 goto failed;
 837         }
 838
 839         id = grp->gr_gid;
 840         free(buf);
 841         free(grp);
 842
 843         return id;
 844
 845 failed:
 846         /* LCOV_EXCL_START */
 847
 848         if (buf)
 849                 free(buf);
 850         if (grp)
 851                 free(grp);
 852
 853         return -1;
 854
 855         /* LCOV_EXCL_STOP */
 856 }
 857
 858 static void
 859 _tdm_socket_init(tdm_private_loop *private_loop)
 860 {
 861         const char *dir = NULL;
 862         char socket_path[TDM_NAME_LEN * 2];
 863         int ret = -1, len;
 864         uid_t uid;
 865         gid_t gid;
 866
 867         dir = getenv("XDG_RUNTIME_DIR");
 868         if (!dir) {
 869                 /* LCOV_EXCL_START */
 870
 871                 TDM_WRN("getting XDG_RUNTIME_DIR failed");
 872                 return;
 873
 874                 /* LCOV_EXCL_STOP */
 875         }
 876
 877         len = strlen(dir);
 878         if (len > TDM_NAME_LEN - 1) {
 879                 TDM_ERR("XDG_RUNTIME_DIR is too long\n");
 880                 return;
 881         }
 882
 883         strncpy(socket_path, dir, TDM_NAME_LEN - 1);
 884         socket_path[TDM_NAME_LEN - 1] = '\0';
 885
 886         strncat(socket_path, "/tdm-socket", 11);
 887         socket_path[TDM_NAME_LEN + 10] = '\0';
 888
 889         ret = chmod(socket_path, 509);
 890         if (ret < 0) {
 891                 /* LCOV_EXCL_START */
 892
 893                 TDM_WRN("changing modes of socket file failed:%s (%m)", socket_path);
 894                 return;
 895
 896                 /* LCOV_EXCL_STOP */
 897         }
 898
 899         ret = _tdm_getgrnam_r("root");
 900         if (ret < 0) {
 901                 /* LCOV_EXCL_START */
 902
 903                 TDM_WRN("getting uid failed");
 904                 return;
 905
 906                 /* LCOV_EXCL_STOP */
 907         }
 908         uid = ret;
 909
 910         ret = _tdm_getgrnam_r("display");
 911         if (ret < 0) {
 912                 /* LCOV_EXCL_START */
 913
 914                 TDM_WRN("getting gid failed");
 915                 return;
 916
 917                 /* LCOV_EXCL_STOP */
 918         }
 919         gid = ret;
 920
 921         ret = chown(socket_path, uid, gid);
 922         if (ret < 0) {
 923                 /* LCOV_EXCL_START */
 924
 925                 TDM_WRN("changing owner of socket file failed:%s (%m)", socket_path);
 926                 return;
 927
 928                 /* LCOV_EXCL_STOP */
 929         }
 930 }
 931
 932 INTERN tdm_error
 933 tdm_server_init(tdm_private_loop *private_loop)
 934 {
 935         tdm_private_server *private_server;
 936
 937         TDM_RETURN_VAL_IF_FAIL(private_loop, TDM_ERROR_OPERATION_FAILED);
 938         TDM_RETURN_VAL_IF_FAIL(private_loop->wl_display, TDM_ERROR_OPERATION_FAILED);
 939
 940         if (private_loop->private_server)
 941                 return TDM_ERROR_NONE;
 942
 943         if (wl_display_add_socket(private_loop->wl_display, "tdm-socket")) {
 944                 /* LCOV_EXCL_START */
 945
 946                 TDM_ERR("createing a tdm-socket failed");
 947                 return TDM_ERROR_OPERATION_FAILED;
 948
 949                 /* LCOV_EXCL_STOP */
 950         }
 951
 952         _tdm_socket_init(private_loop);
 953
 954         private_server = calloc(1, sizeof * private_server);
 955         if (!private_server) {
 956                 TDM_ERR("alloc failed");
 957                 return TDM_ERROR_OUT_OF_MEMORY;
 958         }
 959
 960         LIST_INITHEAD(&private_server->output_list);
 961         LIST_INITHEAD(&private_server->wait_list);
 962
 963         if (!wl_global_create(private_loop->wl_display, &wl_tdm_interface, 1,
 964                                                   private_server, _tdm_server_bind)) {
 965                 /* LCOV_EXCL_START */
 966
 967                 TDM_ERR("creating a global resource failed");
 968                 free(private_server);
 969                 return TDM_ERROR_OUT_OF_MEMORY;
 970
 971                 /* LCOV_EXCL_STOP */
 972         }
 973
 974         private_server->private_loop = private_loop;
 975         private_loop->private_server = private_server;
 976         keep_private_server = private_server;
 977
 978         LIST_INITHEAD(&client_list);
 979
 980         return TDM_ERROR_NONE;
 981 }
 982
 983 INTERN void
 984 tdm_server_deinit(tdm_private_loop *private_loop)
 985 {
 986         tdm_server_output_info *o = NULL, *oo = NULL;
 987         tdm_server_wait_info *w = NULL, *ww = NULL;
 988         tdm_server_client_info *c = NULL, *cc = NULL;
 989         tdm_private_server *private_server;
 990
 991         if (!private_loop->private_server)
 992                 return;
 993
 994         private_server = private_loop->private_server;
 995
 996         LIST_FOR_EACH_ENTRY_SAFE(w, ww, &private_server->wait_list, link) {
 997                 destroy_wait(w);
 998         }
 999
1000         LIST_FOR_EACH_ENTRY_SAFE(o, oo, &private_server->output_list, link) {
1001                 wl_resource_destroy(o->resource);
1002         }
1003
1004         LIST_FOR_EACH_ENTRY_SAFE(c, cc, &client_list, link) {
1005                 wl_resource_destroy(c->resource);
1006         }
1007
1008         free(private_server);
1009         private_loop->private_server = NULL;
1010         keep_private_server = NULL;
1011 }
1012
1013 /* LCOV_EXCL_START */
1014 INTERN const char*
1015 tdm_server_get_client_name(pid_t pid)
1016 {
1017         tdm_server_client_info *c = NULL;
1018
1019         LIST_FOR_EACH_ENTRY(c, &client_list, link) {
1020                 if (c->pid == pid)
1021                         return (const char*)c->name;
1022         }
1023
1024         return NULL;
1025 }
1026 /* LCOV_EXCL_STOP */
1027
1028 /* LCOV_EXCL_START */
1029 INTERN tdm_error
1030 tdm_server_enable_ttrace_client_vblank(tdm_display *dpy, tdm_output *output, int enable)
1031 {
1032         tdm_private_server *private_server = keep_private_server;
1033         tdm_server_output_info *output_info = NULL;
1034
1035         if (!keep_private_server)
1036                 return TDM_ERROR_NONE;
1037
1038         LIST_FOR_EACH_ENTRY(output_info, &private_server->output_list, link) {
1039                 tdm_server_vblank_info *vblank_info = NULL;
1040
1041                 if (output && output_info->output != output)
1042                         continue;
1043
1044                 LIST_FOR_EACH_ENTRY(vblank_info, &output_info->vblank_list, link) {
1045                         wl_tdm_vblank_send_ttrace(vblank_info->resource, enable);
1046                 }
1047         }
1048
1049         return TDM_ERROR_NONE;
1050 }
1051 /* LCOV_EXCL_STOP */