drm-lease-manager/lease-manager.c

   1 /* Copyright 2020-2021 IGEL Co., Ltd.
   2  *
   3  * Licensed under the Apache License, Version 2.0 (the "License");
   4  * you may not use this file except in compliance with the License.
   5  * You may obtain a copy of the License at
   6  *
   7  *     http://www.apache.org/licenses/LICENSE-2.0
   8  *
   9  * Unless required by applicable law or agreed to in writing, software
  10  * distributed under the License is distributed on an "AS IS" BASIS,
  11  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  12  * See the License for the specific language governing permissions and
  13  * limitations under the License.
  14  */
  15
  16 #define _GNU_SOURCE
  17 #include "lease-manager.h"
  18
  19 #include "drm-lease.h"
  20 #include "log.h"
  21
  22 #include <assert.h>
  23 #include <errno.h>
  24 #include <fcntl.h>
  25 #include <poll.h>
  26 #include <pthread.h>
  27 #include <stdbool.h>
  28 #include <stdlib.h>
  29 #include <string.h>
  30 #include <strings.h>
  31 #include <sys/stat.h>
  32 #include <sys/sysmacros.h>
  33 #include <unistd.h>
  34 #include <xf86drm.h>
  35 #include <xf86drmMode.h>
  36
  37 /* Number of resources, to be included in a DRM lease for each connector.
  38  * Each connector needs both a CRTC and conector object:. */
  39 #define DRM_OBJECTS_PER_CONNECTOR (2)
  40
  41 #define ARRAY_LENGTH(x) (sizeof(x) / sizeof(x[0]))
  42
  43 struct lease {
  44         struct lease_handle base;
  45
  46         bool is_granted;
  47         uint32_t lessee_id;
  48         int lease_fd;
  49
  50         uint32_t *object_ids;
  51         int nobject_ids;
  52
  53         /* for lease transfer completion */
  54         uint32_t crtc_id;
  55         pthread_t transition_tid;
  56         bool transition_running;
  57 };
  58
  59 struct lm {
  60         int drm_fd;
  61         dev_t dev_id;
  62
  63         drmModeResPtr drm_resource;
  64         drmModePlaneResPtr drm_plane_resource;
  65         uint32_t available_crtcs;
  66
  67         char **connector_names;
  68         int nconnectors;
  69
  70         struct lease **leases;
  71         int nleases;
  72 };
  73
  74 static const char *const connector_type_names[] = {
  75     [DRM_MODE_CONNECTOR_Unknown] = "Unknown",
  76     [DRM_MODE_CONNECTOR_VGA] = "VGA",
  77     [DRM_MODE_CONNECTOR_DVII] = "DVI-I",
  78     [DRM_MODE_CONNECTOR_DVID] = "DVI-D",
  79     [DRM_MODE_CONNECTOR_DVIA] = "DVI-A",
  80     [DRM_MODE_CONNECTOR_Composite] = "Composite",
  81     [DRM_MODE_CONNECTOR_SVIDEO] = "SVIDEO",
  82     [DRM_MODE_CONNECTOR_LVDS] = "LVDS",
  83     [DRM_MODE_CONNECTOR_Component] = "Component",
  84     [DRM_MODE_CONNECTOR_9PinDIN] = "DIN",
  85     [DRM_MODE_CONNECTOR_DisplayPort] = "DP",
  86     [DRM_MODE_CONNECTOR_HDMIA] = "HDMI-A",
  87     [DRM_MODE_CONNECTOR_HDMIB] = "HDMI-B",
  88     [DRM_MODE_CONNECTOR_TV] = "TV",
  89     [DRM_MODE_CONNECTOR_eDP] = "eDP",
  90     [DRM_MODE_CONNECTOR_VIRTUAL] = "Virtual",
  91     [DRM_MODE_CONNECTOR_DSI] = "DSI",
  92     [DRM_MODE_CONNECTOR_DPI] = "DPI",
  93     [DRM_MODE_CONNECTOR_WRITEBACK] = "Writeback",
  94 };
  95
  96 static char *drm_create_connector_name(drmModeConnectorPtr connector)
  97 {
  98         uint32_t type = connector->connector_type;
  99         uint32_t id = connector->connector_type_id;
 100
 101         if (type >= ARRAY_LENGTH(connector_type_names))
 102                 type = DRM_MODE_CONNECTOR_Unknown;
 103
 104         /* If the type is "Unknown", use the connector_id as the identify to
 105          * guarantee that the name will be unique. */
 106         if (type == DRM_MODE_CONNECTOR_Unknown)
 107                 id = connector->connector_id;
 108
 109         char *name;
 110         if (asprintf(&name, "%s-%d", connector_type_names[type], id) < 0)
 111                 return NULL;
 112
 113         return name;
 114 }
 115
 116 static char *drm_create_default_lease_name(struct lm *lm, int cindex)
 117 {
 118         char *connector_name = lm->connector_names[cindex];
 119
 120         char *name;
 121         if (asprintf(&name, "card%d-%s", minor(lm->dev_id), connector_name) < 0)
 122                 return NULL;
 123
 124         return name;
 125 }
 126
 127 static int drm_get_encoder_crtc_index(struct lm *lm, drmModeEncoderPtr encoder)
 128 {
 129         uint32_t crtc_id = encoder->crtc_id;
 130         if (!crtc_id)
 131                 return -1;
 132
 133         // The CRTC index only makes sense if it is less than the number of
 134         // bits in the encoder possible_crtcs bitmap, which is 32.
 135         assert(lm->drm_resource->count_crtcs < 32);
 136
 137         for (int i = 0; i < lm->drm_resource->count_crtcs; i++) {
 138                 if (lm->drm_resource->crtcs[i] == crtc_id)
 139                         return i;
 140         }
 141         return -1;
 142 }
 143
 144 static int drm_get_active_crtc_index(struct lm *lm,
 145                                      drmModeConnectorPtr connector)
 146 {
 147         drmModeEncoder *encoder =
 148             drmModeGetEncoder(lm->drm_fd, connector->encoder_id);
 149         if (!encoder)
 150                 return -1;
 151
 152         int crtc_idx = drm_get_encoder_crtc_index(lm, encoder);
 153         drmModeFreeEncoder(encoder);
 154         return crtc_idx;
 155 }
 156
 157 static int drm_get_crtc_index(struct lm *lm, drmModeConnectorPtr connector)
 158 {
 159
 160         // try the active CRTC first
 161         int crtc_index = drm_get_active_crtc_index(lm, connector);
 162         if (crtc_index != -1)
 163                 return crtc_index;
 164
 165         // If not try the first available CRTC on the connector/encoder
 166         for (int i = 0; i < connector->count_encoders; i++) {
 167                 drmModeEncoder *encoder =
 168                     drmModeGetEncoder(lm->drm_fd, connector->encoders[i]);
 169
 170                 assert(encoder);
 171
 172                 uint32_t usable_crtcs =
 173                     lm->available_crtcs & encoder->possible_crtcs;
 174                 int crtc = ffs(usable_crtcs);
 175                 drmModeFreeEncoder(encoder);
 176                 if (crtc == 0)
 177                         continue;
 178                 crtc_index = crtc - 1;
 179                 lm->available_crtcs &= ~(1 << crtc_index);
 180                 break;
 181         }
 182         return crtc_index;
 183 }
 184
 185 static void drm_find_available_crtcs(struct lm *lm)
 186 {
 187         // Assume all CRTCS are available by default,
 188         lm->available_crtcs = ~0;
 189
 190         // then remove any that are in use. */
 191         for (int i = 0; i < lm->drm_resource->count_encoders; i++) {
 192                 int enc_id = lm->drm_resource->encoders[i];
 193                 drmModeEncoderPtr enc = drmModeGetEncoder(lm->drm_fd, enc_id);
 194                 if (!enc)
 195                         continue;
 196
 197                 int crtc_idx = drm_get_encoder_crtc_index(lm, enc);
 198                 if (crtc_idx >= 0)
 199                         lm->available_crtcs &= ~(1 << crtc_idx);
 200
 201                 drmModeFreeEncoder(enc);
 202         }
 203 }
 204
 205 static bool drm_find_connector(struct lm *lm, char *name, uint32_t *id)
 206 {
 207         int connectors = lm->drm_resource->count_connectors;
 208
 209         for (int i = 0; i < connectors; i++) {
 210                 if (strcmp(lm->connector_names[i], name))
 211                         continue;
 212                 if (id)
 213                         *id = lm->drm_resource->connectors[i];
 214                 return true;
 215         }
 216         return false;
 217 }
 218
 219 static bool lease_add_planes(struct lm *lm, struct lease *lease, int crtc_index)
 220 {
 221         for (uint32_t i = 0; i < lm->drm_plane_resource->count_planes; i++) {
 222                 uint32_t plane_id = lm->drm_plane_resource->planes[i];
 223                 drmModePlanePtr plane = drmModeGetPlane(lm->drm_fd, plane_id);
 224
 225                 assert(plane);
 226
 227                 // Exclude planes that can be used with multiple CRTCs for now
 228                 if (plane->possible_crtcs == (1u << crtc_index)) {
 229                         lease->object_ids[lease->nobject_ids++] = plane_id;
 230                 }
 231                 drmModeFreePlane(plane);
 232         }
 233         return true;
 234 }
 235
 236 /* Lease transition
 237  * Wait for a client to update the DRM framebuffer on the CRTC managed by
 238  * a lease.  Once the framebuffer has been updated, it is safe to close
 239  * the fd associated with the previous lease client, freeing the previous
 240  * framebuffer if there are no other references to it. */
 241 static void wait_for_fb_update(struct lease *lease, uint32_t old_fb)
 242 {
 243         uint32_t current_fb = old_fb;
 244
 245         struct pollfd drm_poll = {
 246             .fd = lease->lease_fd,
 247             .events = POLLIN,
 248         };
 249
 250         while (current_fb == old_fb) {
 251                 drmModeCrtcPtr crtc;
 252                 if (poll(&drm_poll, 1, -1) < 0) {
 253                         if (errno == EINTR)
 254                                 continue;
 255                         break;
 256                 }
 257
 258                 crtc = drmModeGetCrtc(lease->lease_fd, lease->crtc_id);
 259                 current_fb = crtc->buffer_id;
 260                 drmModeFreeCrtc(crtc);
 261         }
 262 }
 263
 264 struct transition_ctx {
 265         struct lease *lease;
 266         int close_fd;
 267         uint32_t old_fb;
 268 };
 269
 270 static void transition_done(void *arg)
 271 {
 272         struct transition_ctx *ctx = arg;
 273         close(ctx->close_fd);
 274         free(ctx);
 275 }
 276
 277 static void *finish_transition_task(void *arg)
 278 {
 279         struct transition_ctx *ctx = arg;
 280         pthread_cleanup_push(transition_done, ctx);
 281         wait_for_fb_update(ctx->lease, ctx->old_fb);
 282         pthread_cleanup_pop(true);
 283         return NULL;
 284 }
 285
 286 static void close_after_lease_transition(struct lease *lease, int close_fd)
 287 {
 288         struct transition_ctx *ctx = calloc(1, sizeof(*ctx));
 289
 290         assert(ctx);
 291
 292         drmModeCrtcPtr crtc = drmModeGetCrtc(lease->lease_fd, lease->crtc_id);
 293
 294         ctx->lease = lease;
 295         ctx->close_fd = close_fd;
 296         ctx->old_fb = crtc->buffer_id;
 297
 298         drmModeFreeCrtc(crtc);
 299
 300         int ret = pthread_create(&lease->transition_tid, NULL,
 301                                  finish_transition_task, ctx);
 302
 303         lease->transition_running = (ret == 0);
 304 }
 305
 306 static void cancel_lease_transition_thread(struct lease *lease)
 307 {
 308
 309         if (lease->transition_running) {
 310                 pthread_cancel(lease->transition_tid);
 311                 pthread_join(lease->transition_tid, NULL);
 312         }
 313
 314         lease->transition_running = false;
 315 }
 316
 317 static void lease_free(struct lease *lease)
 318 {
 319         free(lease->base.name);
 320         free(lease->object_ids);
 321         free(lease);
 322 }
 323
 324 static struct lease *lease_create(struct lm *lm,
 325                                   const struct lease_config *config)
 326 {
 327         struct lease *lease;
 328
 329         if (!config->lease_name) {
 330                 ERROR_LOG("Mising lease name\n");
 331                 return NULL;
 332         }
 333
 334         lease = calloc(1, sizeof(struct lease));
 335         if (!lease) {
 336                 DEBUG_LOG("Memory allocation failed: %s\n", strerror(errno));
 337                 return NULL;
 338         }
 339
 340         lease->base.name = strdup(config->lease_name);
 341         if (!lease->base.name) {
 342                 DEBUG_LOG("Can't create lease name: %s\n", strerror(errno));
 343                 goto err;
 344         }
 345
 346         int nconnectors =
 347             config->nconnectors > 0 ? config->nconnectors : config->ncids;
 348         int nobjects = lm->drm_plane_resource->count_planes +
 349                        nconnectors * DRM_OBJECTS_PER_CONNECTOR;
 350
 351         lease->object_ids = calloc(nobjects, sizeof(uint32_t));
 352         if (!lease->object_ids) {
 353                 DEBUG_LOG("Memory allocation failed: %s\n", strerror(errno));
 354                 goto err;
 355         }
 356
 357         for (int i = 0; i < nconnectors; i++) {
 358                 uint32_t cid;
 359                 struct connector_config *con_config = NULL;
 360
 361                 if (config->nconnectors > 0)
 362                         con_config = &config->connectors[i];
 363
 364                 if (con_config) {
 365                         char *connector_name = con_config->name;
 366                         bool optional = con_config->optional;
 367
 368                         bool found =
 369                             drm_find_connector(lm, connector_name, &cid);
 370
 371                         bool missing_mandatory = !found && !optional;
 372                         bool missing_optional = !found && optional;
 373
 374                         if (missing_mandatory) {
 375                                 ERROR_LOG("Lease: %s, "
 376                                           "mandatory connector %s not found\n",
 377                                           config->lease_name, connector_name);
 378                                 goto err;
 379                         } else if (missing_optional) {
 380                                 WARN_LOG("Lease: %s, "
 381                                          "unknown DRM connector: %s\n",
 382                                          config->lease_name, connector_name);
 383                                 continue;
 384                         }
 385                 } else {
 386                         cid = config->connector_ids[i];
 387                 }
 388
 389                 drmModeConnectorPtr connector =
 390                     drmModeGetConnector(lm->drm_fd, cid);
 391
 392                 if (connector == NULL) {
 393                         ERROR_LOG("Can't find connector id: %d\n", cid);
 394                         goto err;
 395                 }
 396
 397                 int crtc_index = drm_get_crtc_index(lm, connector);
 398
 399                 drmModeFreeConnector(connector);
 400
 401                 if (crtc_index < 0) {
 402                         DEBUG_LOG("No crtc found for connector: %d, lease %s\n",
 403                                   cid, lease->base.name);
 404                         goto err;
 405                 }
 406
 407                 if (!lease_add_planes(lm, lease, crtc_index))
 408                         goto err;
 409
 410                 uint32_t crtc_id = lm->drm_resource->crtcs[crtc_index];
 411                 lease->crtc_id = crtc_id;
 412                 lease->object_ids[lease->nobject_ids++] = crtc_id;
 413                 lease->object_ids[lease->nobject_ids++] = cid;
 414         }
 415         lease->is_granted = false;
 416         lease->lease_fd = -1;
 417
 418         return lease;
 419
 420 err:
 421         lease_free(lease);
 422         return NULL;
 423 }
 424
 425 static void destroy_default_lease_configs(int num_configs,
 426                                           struct lease_config *configs)
 427 {
 428         for (int i = 0; i < num_configs; i++) {
 429                 free(configs[i].connector_ids);
 430                 free(configs[i].lease_name);
 431         }
 432
 433         free(configs);
 434 }
 435
 436 static int create_default_lease_configs(struct lm *lm,
 437                                         struct lease_config **configs)
 438 {
 439         struct lease_config *def_configs;
 440         int num_configs = lm->drm_resource->count_connectors;
 441
 442         if (num_configs < 0)
 443                 return -1;
 444
 445         def_configs = calloc(num_configs, sizeof(*def_configs));
 446         if (!def_configs) {
 447                 DEBUG_LOG("Memory allocation failed: %s\n", strerror(errno));
 448                 return -1;
 449         }
 450
 451         for (int i = 0; i < num_configs; i++) {
 452                 uint32_t cid = lm->drm_resource->connectors[i];
 453
 454                 def_configs[i].connector_ids = malloc(sizeof(uint32_t));
 455                 if (!def_configs[i].connector_ids) {
 456                         DEBUG_LOG("Memory allocation failed: %s\n",
 457                                   strerror(errno));
 458                         goto err;
 459                 }
 460
 461                 def_configs[i].lease_name =
 462                     drm_create_default_lease_name(lm, i);
 463
 464                 def_configs[i].connector_ids[0] = cid;
 465                 def_configs[i].ncids = 1;
 466         }
 467
 468         *configs = def_configs;
 469         return num_configs;
 470
 471 err:
 472         destroy_default_lease_configs(num_configs, def_configs);
 473         return -1;
 474 }
 475
 476 static struct lm *drm_device_get_resources(const char *device)
 477 {
 478         struct lm *lm = calloc(1, sizeof(struct lm));
 479         if (!lm) {
 480                 DEBUG_LOG("Memory allocation failed: %s\n", strerror(errno));
 481                 return NULL;
 482         }
 483         lm->drm_fd = open(device, O_RDWR);
 484         if (lm->drm_fd < 0) {
 485                 ERROR_LOG("Cannot open DRM device (%s): %s\n", device,
 486                           strerror(errno));
 487                 goto err;
 488         }
 489
 490         lm->drm_resource = drmModeGetResources(lm->drm_fd);
 491         if (!lm->drm_resource) {
 492                 ERROR_LOG("Invalid DRM device(%s)\n", device);
 493                 DEBUG_LOG("drmModeGetResources failed: %s\n", strerror(errno));
 494                 goto err;
 495         }
 496
 497         lm->drm_plane_resource = drmModeGetPlaneResources(lm->drm_fd);
 498         if (!lm->drm_plane_resource) {
 499                 DEBUG_LOG("drmModeGetPlaneResources failed: %s\n",
 500                           strerror(errno));
 501                 goto err;
 502         }
 503
 504         struct stat st;
 505         if (fstat(lm->drm_fd, &st) < 0 || !S_ISCHR(st.st_mode)) {
 506                 DEBUG_LOG("%s is not a valid device file\n", device);
 507                 goto err;
 508         }
 509
 510         lm->dev_id = st.st_rdev;
 511
 512         lm->nconnectors = lm->drm_resource->count_connectors;
 513         lm->connector_names = calloc(lm->nconnectors, sizeof(char *));
 514
 515         for (int i = 0; i < lm->nconnectors; i++) {
 516                 drmModeConnectorPtr connector;
 517                 uint32_t cid = lm->drm_resource->connectors[i];
 518
 519                 connector = drmModeGetConnector(lm->drm_fd, cid);
 520                 lm->connector_names[i] = drm_create_connector_name(connector);
 521                 drmModeFreeConnector(connector);
 522
 523                 if (!lm->connector_names[i]) {
 524                         DEBUG_LOG("Can't create name for connector %d: %s\n",
 525                                   cid, strerror(errno));
 526                         goto err;
 527                 }
 528         }
 529         return lm;
 530 err:
 531         lm_destroy(lm);
 532         return NULL;
 533 }
 534
 535 static struct lm *drm_find_drm_device(const char *device)
 536 {
 537         drmDevicePtr devices[64];
 538         int ndevs;
 539         struct lm *lm = NULL;
 540
 541         if (device)
 542                 return drm_device_get_resources(device);
 543
 544         ndevs = drmGetDevices2(0, devices, 64);
 545
 546         for (int i = 0; i < ndevs; i++) {
 547                 lm = drm_device_get_resources(
 548                     devices[i]->nodes[DRM_NODE_PRIMARY]);
 549                 if (lm)
 550                         break;
 551         }
 552
 553         drmFreeDevices(devices, ndevs);
 554
 555         return lm;
 556 }
 557
 558 static int lm_create_leases(struct lm *lm, int num_leases,
 559                             const struct lease_config *configs)
 560 {
 561         lm->leases = calloc(num_leases, sizeof(struct lease *));
 562         if (!lm->leases) {
 563                 DEBUG_LOG("Memory allocation failed: %s\n", strerror(errno));
 564                 return -1;
 565         }
 566
 567         drm_find_available_crtcs(lm);
 568
 569         for (int i = 0; i < num_leases; i++) {
 570                 struct lease *lease = lease_create(lm, &configs[i]);
 571                 if (!lease)
 572                         continue;
 573
 574                 lm->leases[lm->nleases] = lease;
 575                 lm->nleases++;
 576         }
 577         if (lm->nleases == 0)
 578                 return -1;
 579
 580         return 0;
 581 }
 582
 583 struct lm *lm_create_with_config(const char *device, int num_leases,
 584                                  struct lease_config *configs)
 585 {
 586         struct lease_config *default_configs = NULL;
 587         struct lm *lm = drm_find_drm_device(device);
 588
 589         if (!lm) {
 590                 ERROR_LOG("No available DRM device found\n");
 591                 return NULL;
 592         }
 593
 594         if (configs == NULL || num_leases == 0) {
 595                 num_leases = create_default_lease_configs(lm, &default_configs);
 596                 if (num_leases < 0) {
 597                         lm_destroy(lm);
 598                         ERROR_LOG("DRM connector enumeration failed\n");
 599                         return NULL;
 600                 }
 601                 configs = default_configs;
 602         }
 603
 604         if (lm_create_leases(lm, num_leases, configs) < 0) {
 605                 lm_destroy(lm);
 606                 lm = NULL;
 607         }
 608
 609         if (default_configs)
 610                 destroy_default_lease_configs(num_leases, default_configs);
 611         return lm;
 612 }
 613
 614 struct lm *lm_create(const char *device)
 615 {
 616         return lm_create_with_config(device, 0, NULL);
 617 }
 618
 619 void lm_destroy(struct lm *lm)
 620 {
 621         assert(lm);
 622
 623         for (int i = 0; i < lm->nleases; i++) {
 624                 struct lease_handle *lease_handle = &lm->leases[i]->base;
 625                 lm_lease_revoke(lm, lease_handle);
 626                 lm_lease_close(lease_handle);
 627                 lease_free(lm->leases[i]);
 628         }
 629
 630         free(lm->leases);
 631
 632         for (int i = 0; i < lm->nconnectors; i++)
 633                 free(lm->connector_names[i]);
 634         free(lm->connector_names);
 635
 636         drmModeFreeResources(lm->drm_resource);
 637         drmModeFreePlaneResources(lm->drm_plane_resource);
 638         close(lm->drm_fd);
 639         free(lm);
 640 }
 641
 642 int lm_get_lease_handles(struct lm *lm, struct lease_handle ***handles)
 643 {
 644         assert(lm);
 645         assert(handles);
 646
 647         *handles = (struct lease_handle **)lm->leases;
 648         return lm->nleases;
 649 }
 650
 651 int lm_lease_grant(struct lm *lm, struct lease_handle *handle)
 652 {
 653         assert(lm);
 654         assert(handle);
 655
 656         struct lease *lease = (struct lease *)handle;
 657         if (lease->is_granted) {
 658                 /* Lease is already claimed */
 659                 return -1;
 660         }
 661
 662         int lease_fd =
 663             drmModeCreateLease(lm->drm_fd, lease->object_ids,
 664                                lease->nobject_ids, 0, &lease->lessee_id);
 665         if (lease_fd < 0) {
 666                 ERROR_LOG("drmModeCreateLease failed on lease %s: %s\n",
 667                           lease->base.name, strerror(errno));
 668                 return -1;
 669         }
 670
 671         lease->is_granted = true;
 672
 673         int old_lease_fd = lease->lease_fd;
 674         lease->lease_fd = lease_fd;
 675
 676         if (old_lease_fd >= 0)
 677                 close_after_lease_transition(lease, old_lease_fd);
 678
 679         return lease_fd;
 680 }
 681
 682 int lm_lease_transfer(struct lm *lm, struct lease_handle *handle)
 683 {
 684         assert(lm);
 685         assert(handle);
 686
 687         struct lease *lease = (struct lease *)handle;
 688         if (!lease->is_granted)
 689                 return -1;
 690
 691         lm_lease_revoke(lm, handle);
 692         if (lm_lease_grant(lm, handle) < 0) {
 693                 lm_lease_close(handle);
 694                 return -1;
 695         }
 696
 697         return lease->lease_fd;
 698 }
 699
 700 void lm_lease_revoke(struct lm *lm, struct lease_handle *handle)
 701 {
 702         assert(lm);
 703         assert(handle);
 704
 705         struct lease *lease = (struct lease *)handle;
 706
 707         if (!lease->is_granted)
 708                 return;
 709
 710         drmModeRevokeLease(lm->drm_fd, lease->lessee_id);
 711         cancel_lease_transition_thread(lease);
 712         lease->is_granted = false;
 713 }
 714
 715 void lm_lease_close(struct lease_handle *handle)
 716 {
 717         assert(handle);
 718
 719         struct lease *lease = (struct lease *)handle;
 720         if (lease->lease_fd >= 0)
 721                 close(lease->lease_fd);
 722         lease->lease_fd = -1;
 723 }