[93371] | 1 | /* $Id: display-svga-session.cpp 98474 2023-02-03 19:20:53Z vboxsync $ */
|
---|
| 2 | /** @file
|
---|
[93423] | 3 | * Guest Additions - VMSVGA Desktop Environment user session assistant.
|
---|
[93371] | 4 | *
|
---|
| 5 | * This service connects to VBoxDRMClient IPC server, listens for
|
---|
| 6 | * its commands and reports current display offsets to it. If IPC
|
---|
| 7 | * server is not available, it forks legacy 'VBoxClient --vmsvga
|
---|
| 8 | * service and terminates.
|
---|
| 9 | */
|
---|
| 10 |
|
---|
| 11 | /*
|
---|
[98103] | 12 | * Copyright (C) 2017-2023 Oracle and/or its affiliates.
|
---|
[93371] | 13 | *
|
---|
[96407] | 14 | * This file is part of VirtualBox base platform packages, as
|
---|
| 15 | * available from https://www.virtualbox.org.
|
---|
| 16 | *
|
---|
| 17 | * This program is free software; you can redistribute it and/or
|
---|
| 18 | * modify it under the terms of the GNU General Public License
|
---|
| 19 | * as published by the Free Software Foundation, in version 3 of the
|
---|
| 20 | * License.
|
---|
| 21 | *
|
---|
| 22 | * This program is distributed in the hope that it will be useful, but
|
---|
| 23 | * WITHOUT ANY WARRANTY; without even the implied warranty of
|
---|
| 24 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
---|
| 25 | * General Public License for more details.
|
---|
| 26 | *
|
---|
| 27 | * You should have received a copy of the GNU General Public License
|
---|
| 28 | * along with this program; if not, see <https://www.gnu.org/licenses>.
|
---|
| 29 | *
|
---|
| 30 | * SPDX-License-Identifier: GPL-3.0-only
|
---|
[93371] | 31 | */
|
---|
| 32 |
|
---|
| 33 | /*
|
---|
| 34 | * This service is an IPC client for VBoxDRMClient daemon. It is also
|
---|
| 35 | * a proxy bridge to a Desktop Environment specific code (so called
|
---|
| 36 | * Desktop Environment helpers).
|
---|
| 37 | *
|
---|
| 38 | * Once started, it will try to enumerate and probe all the registered
|
---|
| 39 | * helpers and if appropriate helper found, it will forward incoming IPC
|
---|
| 40 | * commands to it as well as send helper's commands back to VBoxDRMClient.
|
---|
| 41 | * Generic helper is a special one. It will be used by default if all the
|
---|
| 42 | * other helpers are failed on probe. Moreover, generic helper provides
|
---|
| 43 | * helper functions that can be used by other helpers as well. For example,
|
---|
| 44 | * once Gnome3 Desktop Environment is running on X11, it will be also use
|
---|
| 45 | * display offsets change notification monitor of a generic helper.
|
---|
| 46 | *
|
---|
| 47 | * Multiple instances of this daemon are allowed to run in parallel
|
---|
[98474] | 48 | * with the following limitations.
|
---|
[93371] | 49 | * A single user cannot run multiple daemon instances per single TTY device,
|
---|
| 50 | * however, multiple instances are allowed for the user on different
|
---|
| 51 | * TTY devices (i.e. in case if user runs multiple X servers on different
|
---|
| 52 | * terminals). On multiple TTY devices multiple users can run multiple
|
---|
| 53 | * daemon instances (i.e. in case of "switch user" DE configuration when
|
---|
| 54 | * multiple X/Wayland servers are running on separate TTY devices).
|
---|
| 55 | */
|
---|
| 56 |
|
---|
| 57 | #include "VBoxClient.h"
|
---|
| 58 | #include "display-ipc.h"
|
---|
| 59 | #include "display-helper.h"
|
---|
| 60 |
|
---|
| 61 | #include <VBox/VBoxGuestLib.h>
|
---|
| 62 |
|
---|
| 63 | #include <iprt/localipc.h>
|
---|
| 64 | #include <iprt/asm.h>
|
---|
[93375] | 65 | #include <iprt/errcore.h>
|
---|
[93371] | 66 | #include <iprt/path.h>
|
---|
| 67 | #include <iprt/linux/sysfs.h>
|
---|
| 68 |
|
---|
| 69 |
|
---|
| 70 | /** Handle to IPC client connection. */
|
---|
| 71 | VBOX_DRMIPC_CLIENT g_hClient = VBOX_DRMIPC_CLIENT_INITIALIZER;
|
---|
| 72 |
|
---|
| 73 | /** IPC client handle critical section. */
|
---|
| 74 | static RTCRITSECT g_hClientCritSect;
|
---|
| 75 |
|
---|
| 76 | /** List of available Desktop Environment specific display helpers. */
|
---|
| 77 | static const VBCLDISPLAYHELPER *g_apDisplayHelpers[] =
|
---|
| 78 | {
|
---|
| 79 | &g_DisplayHelperGnome3, /* GNOME3 helper. */
|
---|
| 80 | &g_DisplayHelperGeneric, /* Generic helper. */
|
---|
| 81 | NULL, /* Terminate list. */
|
---|
| 82 | };
|
---|
| 83 |
|
---|
| 84 | /** Selected Desktop Environment specific display helper. */
|
---|
| 85 | static const VBCLDISPLAYHELPER *g_pDisplayHelper = NULL;
|
---|
| 86 |
|
---|
| 87 | /** IPC connection session handle. */
|
---|
| 88 | static RTLOCALIPCSESSION g_hSession = 0;
|
---|
| 89 |
|
---|
| 90 | /**
|
---|
| 91 | * Callback for display offsets change events provided by Desktop Environment specific display helper.
|
---|
| 92 | *
|
---|
| 93 | * @returns IPRT status code.
|
---|
[94077] | 94 | * @param cDisplays Number of displays which have changed offset.
|
---|
| 95 | * @param aDisplays Display data.
|
---|
[93371] | 96 | */
|
---|
[94076] | 97 | static DECLCALLBACK(int) vbclSVGASessionDisplayOffsetChanged(uint32_t cDisplays, struct VBOX_DRMIPC_VMWRECT *aDisplays)
|
---|
[93371] | 98 | {
|
---|
| 99 | int rc = RTCritSectEnter(&g_hClientCritSect);
|
---|
| 100 |
|
---|
| 101 | if (RT_SUCCESS(rc))
|
---|
| 102 | {
|
---|
[94076] | 103 | rc = vbDrmIpcReportDisplayOffsets(&g_hClient, cDisplays, aDisplays);
|
---|
[93371] | 104 | int rc2 = RTCritSectLeave(&g_hClientCritSect);
|
---|
| 105 | if (RT_FAILURE(rc2))
|
---|
| 106 | VBClLogError("vbclSVGASessionDisplayOffsetChanged: unable to leave critical session, rc=%Rrc\n", rc2);
|
---|
| 107 | }
|
---|
| 108 | else
|
---|
| 109 | VBClLogError("vbclSVGASessionDisplayOffsetChanged: unable to enter critical session, rc=%Rrc\n", rc);
|
---|
| 110 |
|
---|
| 111 | return rc;
|
---|
| 112 | }
|
---|
| 113 |
|
---|
| 114 | /**
|
---|
| 115 | * @interface_method_impl{VBCLSERVICE,pfnInit}
|
---|
| 116 | */
|
---|
| 117 | static DECLCALLBACK(int) vbclSVGASessionInit(void)
|
---|
| 118 | {
|
---|
| 119 | int rc;
|
---|
| 120 | RTLOCALIPCSESSION hSession;
|
---|
| 121 | int idxDisplayHelper = 0;
|
---|
| 122 |
|
---|
| 123 | /** Custom log prefix to be used for logger instance of this process. */
|
---|
| 124 | static const char *pszLogPrefix = "VBoxClient VMSVGA:";
|
---|
| 125 |
|
---|
| 126 | VBClLogSetLogPrefix(pszLogPrefix);
|
---|
| 127 |
|
---|
| 128 | rc = RTCritSectInit(&g_hClientCritSect);
|
---|
| 129 | if (RT_FAILURE(rc))
|
---|
| 130 | {
|
---|
| 131 | VBClLogError("unable to init locking, rc=%Rrc\n", rc);
|
---|
| 132 | return rc;
|
---|
| 133 | }
|
---|
| 134 |
|
---|
| 135 | /* Go through list of available Desktop Environment specific helpers and try to pick up one. */
|
---|
| 136 | while (g_apDisplayHelpers[idxDisplayHelper])
|
---|
| 137 | {
|
---|
| 138 | if (g_apDisplayHelpers[idxDisplayHelper]->pfnProbe)
|
---|
| 139 | {
|
---|
| 140 | VBClLogInfo("probing Desktop Environment helper '%s'\n",
|
---|
| 141 | g_apDisplayHelpers[idxDisplayHelper]->pszName);
|
---|
| 142 |
|
---|
| 143 | rc = g_apDisplayHelpers[idxDisplayHelper]->pfnProbe();
|
---|
| 144 |
|
---|
| 145 | /* Found compatible helper. */
|
---|
| 146 | if (RT_SUCCESS(rc))
|
---|
| 147 | {
|
---|
| 148 | /* Initialize it. */
|
---|
| 149 | if (g_apDisplayHelpers[idxDisplayHelper]->pfnInit)
|
---|
| 150 | {
|
---|
| 151 | rc = g_apDisplayHelpers[idxDisplayHelper]->pfnInit();
|
---|
| 152 | }
|
---|
| 153 |
|
---|
| 154 | /* Some helpers might have no .pfnInit(), that's ok. */
|
---|
| 155 | if (RT_SUCCESS(rc))
|
---|
| 156 | {
|
---|
| 157 | /* Subscribe to display offsets change event. */
|
---|
| 158 | if (g_apDisplayHelpers[idxDisplayHelper]->pfnSubscribeDisplayOffsetChangeNotification)
|
---|
| 159 | {
|
---|
| 160 | g_apDisplayHelpers[idxDisplayHelper]->
|
---|
| 161 | pfnSubscribeDisplayOffsetChangeNotification(
|
---|
| 162 | vbclSVGASessionDisplayOffsetChanged);
|
---|
| 163 | }
|
---|
| 164 |
|
---|
| 165 | g_pDisplayHelper = g_apDisplayHelpers[idxDisplayHelper];
|
---|
| 166 | break;
|
---|
| 167 | }
|
---|
| 168 | else
|
---|
| 169 | VBClLogError("compatible Desktop Environment "
|
---|
| 170 | "helper has been found, but it cannot be initialized, rc=%Rrc\n", rc);
|
---|
| 171 | }
|
---|
| 172 | }
|
---|
| 173 |
|
---|
| 174 | idxDisplayHelper++;
|
---|
| 175 | }
|
---|
| 176 |
|
---|
| 177 | /* Make sure we found compatible Desktop Environment specific helper. */
|
---|
| 178 | if (g_pDisplayHelper)
|
---|
| 179 | {
|
---|
| 180 | VBClLogInfo("using Desktop Environment specific display helper '%s'\n",
|
---|
| 181 | g_pDisplayHelper->pszName);
|
---|
| 182 | }
|
---|
| 183 | else
|
---|
| 184 | {
|
---|
| 185 | VBClLogError("unable to find Desktop Environment specific display helper\n");
|
---|
| 186 | return VERR_NOT_IMPLEMENTED;
|
---|
| 187 | }
|
---|
| 188 |
|
---|
| 189 | /* Attempt to connect to VBoxDRMClient IPC server. */
|
---|
| 190 | rc = RTLocalIpcSessionConnect(&hSession, VBOX_DRMIPC_SERVER_NAME, 0);
|
---|
| 191 | if (RT_SUCCESS(rc))
|
---|
| 192 | {
|
---|
| 193 | g_hSession = hSession;
|
---|
| 194 | }
|
---|
| 195 | else
|
---|
| 196 | VBClLogError("unable to connect to IPC server, rc=%Rrc\n", rc);
|
---|
| 197 |
|
---|
| 198 | /* We cannot initialize ourselves, start legacy service and terminate. */
|
---|
| 199 | if (RT_FAILURE(rc))
|
---|
| 200 | {
|
---|
| 201 | /* Free helper resources. */
|
---|
| 202 | if (g_pDisplayHelper->pfnUnsubscribeDisplayOffsetChangeNotification)
|
---|
| 203 | g_pDisplayHelper->pfnUnsubscribeDisplayOffsetChangeNotification();
|
---|
| 204 |
|
---|
| 205 | if (g_pDisplayHelper->pfnTerm)
|
---|
| 206 | {
|
---|
| 207 | rc = g_pDisplayHelper->pfnTerm();
|
---|
| 208 | VBClLogInfo("helper service terminated, rc=%Rrc\n", rc);
|
---|
| 209 | }
|
---|
| 210 |
|
---|
| 211 | rc = VbglR3DrmLegacyClientStart();
|
---|
| 212 | VBClLogInfo("starting legacy service, rc=%Rrc\n", rc);
|
---|
| 213 | /* Force return status, so parent thread wont be trying to start worker thread. */
|
---|
| 214 | rc = VERR_NOT_AVAILABLE;
|
---|
| 215 | }
|
---|
| 216 |
|
---|
| 217 | return rc;
|
---|
| 218 | }
|
---|
| 219 |
|
---|
| 220 | /**
|
---|
| 221 | * A callback function which is triggered on IPC data receive.
|
---|
| 222 | *
|
---|
| 223 | * @returns IPRT status code.
|
---|
| 224 | * @param idCmd DRM IPC command ID.
|
---|
| 225 | * @param pvData DRM IPC command payload.
|
---|
| 226 | * @param cbData Size of DRM IPC command payload.
|
---|
| 227 | */
|
---|
[93378] | 228 | static DECLCALLBACK(int) vbclSVGASessionRxCallBack(uint8_t idCmd, void *pvData, uint32_t cbData)
|
---|
[93371] | 229 | {
|
---|
| 230 | VBOXDRMIPCCLTCMD enmCmd =
|
---|
| 231 | (idCmd > VBOXDRMIPCCLTCMD_INVALID && idCmd < VBOXDRMIPCCLTCMD_MAX) ?
|
---|
| 232 | (VBOXDRMIPCCLTCMD)idCmd : VBOXDRMIPCCLTCMD_INVALID;
|
---|
| 233 |
|
---|
| 234 | int rc = VERR_INVALID_PARAMETER;
|
---|
| 235 |
|
---|
| 236 | AssertReturn(pvData, VERR_INVALID_PARAMETER);
|
---|
| 237 | AssertReturn(cbData, VERR_INVALID_PARAMETER);
|
---|
| 238 | AssertReturn(g_pDisplayHelper, VERR_INVALID_PARAMETER);
|
---|
| 239 |
|
---|
| 240 | switch (enmCmd)
|
---|
| 241 | {
|
---|
| 242 | case VBOXDRMIPCCLTCMD_SET_PRIMARY_DISPLAY:
|
---|
| 243 | {
|
---|
| 244 | if (g_pDisplayHelper->pfnSetPrimaryDisplay)
|
---|
| 245 | {
|
---|
| 246 | PVBOX_DRMIPC_COMMAND_SET_PRIMARY_DISPLAY pCmd = (PVBOX_DRMIPC_COMMAND_SET_PRIMARY_DISPLAY)pvData;
|
---|
| 247 | static uint32_t idPrimaryDisplayCached = VBOX_DRMIPC_MONITORS_MAX;
|
---|
| 248 |
|
---|
| 249 | if ( pCmd->idDisplay < VBOX_DRMIPC_MONITORS_MAX
|
---|
| 250 | && idPrimaryDisplayCached != pCmd->idDisplay)
|
---|
| 251 | {
|
---|
| 252 | rc = g_pDisplayHelper->pfnSetPrimaryDisplay(pCmd->idDisplay);
|
---|
| 253 | /* Update cache. */
|
---|
| 254 | idPrimaryDisplayCached = pCmd->idDisplay;
|
---|
| 255 | }
|
---|
| 256 | else
|
---|
| 257 | VBClLogVerbose(1, "do not set %u as a primary display\n", pCmd->idDisplay);
|
---|
| 258 | }
|
---|
| 259 |
|
---|
| 260 | break;
|
---|
| 261 | }
|
---|
| 262 | default:
|
---|
| 263 | {
|
---|
| 264 | VBClLogError("received unknown IPC command 0x%x\n", idCmd);
|
---|
| 265 | break;
|
---|
| 266 | }
|
---|
| 267 | }
|
---|
| 268 |
|
---|
| 269 | return rc;
|
---|
| 270 | }
|
---|
| 271 |
|
---|
| 272 | /**
|
---|
| 273 | * Reconnect to DRM IPC server.
|
---|
| 274 | */
|
---|
| 275 | static int vbclSVGASessionReconnect(void)
|
---|
| 276 | {
|
---|
| 277 | int rc = VERR_GENERAL_FAILURE;
|
---|
| 278 |
|
---|
| 279 | rc = RTCritSectEnter(&g_hClientCritSect);
|
---|
| 280 | if (RT_FAILURE(rc))
|
---|
| 281 | {
|
---|
| 282 | VBClLogError("unable to enter critical section on reconnect, rc=%Rrc\n", rc);
|
---|
| 283 | return rc;
|
---|
| 284 | }
|
---|
| 285 |
|
---|
| 286 | /* Check if session was not closed before. */
|
---|
| 287 | if (RT_VALID_PTR(g_hSession))
|
---|
| 288 | {
|
---|
| 289 | rc = RTLocalIpcSessionClose(g_hSession);
|
---|
| 290 | if (RT_FAILURE(rc))
|
---|
| 291 | VBClLogError("unable to release IPC connection on reconnect, rc=%Rrc\n", rc);
|
---|
| 292 |
|
---|
| 293 | rc = vbDrmIpcClientReleaseResources(&g_hClient);
|
---|
| 294 | if (RT_FAILURE(rc))
|
---|
| 295 | VBClLogError("unable to release IPC session resources, rc=%Rrc\n", rc);
|
---|
| 296 | }
|
---|
| 297 |
|
---|
| 298 | rc = RTLocalIpcSessionConnect(&g_hSession, VBOX_DRMIPC_SERVER_NAME, 0);
|
---|
| 299 | if (RT_SUCCESS(rc))
|
---|
| 300 | {
|
---|
| 301 | rc = vbDrmIpcClientInit(&g_hClient, RTThreadSelf(), g_hSession, VBOX_DRMIPC_TX_QUEUE_SIZE, vbclSVGASessionRxCallBack);
|
---|
| 302 | if (RT_FAILURE(rc))
|
---|
| 303 | VBClLogError("unable to re-initialize IPC session, rc=%Rrc\n", rc);
|
---|
| 304 | }
|
---|
| 305 | else
|
---|
| 306 | VBClLogError("unable to reconnect to IPC server, rc=%Rrc\n", rc);
|
---|
| 307 |
|
---|
| 308 | int rc2 = RTCritSectLeave(&g_hClientCritSect);
|
---|
| 309 | if (RT_FAILURE(rc2))
|
---|
| 310 | VBClLogError("unable to leave critical section on reconnect, rc=%Rrc\n", rc);
|
---|
| 311 |
|
---|
| 312 | return rc;
|
---|
| 313 | }
|
---|
| 314 |
|
---|
| 315 | /**
|
---|
| 316 | * @interface_method_impl{VBCLSERVICE,pfnWorker}
|
---|
| 317 | */
|
---|
| 318 | static DECLCALLBACK(int) vbclSVGASessionWorker(bool volatile *pfShutdown)
|
---|
| 319 | {
|
---|
| 320 | int rc = VINF_SUCCESS;
|
---|
| 321 |
|
---|
| 322 | /* Notify parent thread that we started successfully. */
|
---|
| 323 | rc = RTThreadUserSignal(RTThreadSelf());
|
---|
| 324 | if (RT_FAILURE(rc))
|
---|
| 325 | VBClLogError("unable to notify parent thread about successful start\n");
|
---|
| 326 |
|
---|
| 327 | rc = RTCritSectEnter(&g_hClientCritSect);
|
---|
| 328 |
|
---|
| 329 | if (RT_FAILURE(rc))
|
---|
| 330 | {
|
---|
| 331 | VBClLogError("unable to enter critical section on worker start, rc=%Rrc\n", rc);
|
---|
| 332 | return rc;
|
---|
| 333 | }
|
---|
| 334 |
|
---|
| 335 | rc = vbDrmIpcClientInit(&g_hClient, RTThreadSelf(), g_hSession, VBOX_DRMIPC_TX_QUEUE_SIZE, vbclSVGASessionRxCallBack);
|
---|
| 336 | int rc2 = RTCritSectLeave(&g_hClientCritSect);
|
---|
| 337 | if (RT_FAILURE(rc2))
|
---|
| 338 | VBClLogError("unable to leave critical section on worker start, rc=%Rrc\n", rc);
|
---|
| 339 |
|
---|
| 340 | if (RT_FAILURE(rc))
|
---|
| 341 | {
|
---|
| 342 | VBClLogError("cannot initialize IPC session, rc=%Rrc\n", rc);
|
---|
| 343 | return rc;
|
---|
| 344 | }
|
---|
| 345 |
|
---|
| 346 | for (;;)
|
---|
| 347 | {
|
---|
| 348 | rc = vbDrmIpcConnectionHandler(&g_hClient);
|
---|
| 349 |
|
---|
| 350 | /* Try to shutdown thread as soon as possible. */
|
---|
| 351 | if (ASMAtomicReadBool(pfShutdown))
|
---|
| 352 | {
|
---|
| 353 | /* Shutdown requested. */
|
---|
| 354 | break;
|
---|
| 355 | }
|
---|
| 356 |
|
---|
| 357 | /* Normal case, there was no incoming messages for a while. */
|
---|
| 358 | if (rc == VERR_TIMEOUT)
|
---|
| 359 | {
|
---|
| 360 | continue;
|
---|
| 361 | }
|
---|
| 362 | else if (RT_FAILURE(rc))
|
---|
| 363 | {
|
---|
| 364 | VBClLogError("unable to handle IPC connection, rc=%Rrc\n", rc);
|
---|
| 365 |
|
---|
| 366 | /* Relax a bit before spinning the loop. */
|
---|
| 367 | RTThreadSleep(VBOX_DRMIPC_RX_RELAX_MS);
|
---|
| 368 | /* Try to reconnect to server. */
|
---|
| 369 | rc = vbclSVGASessionReconnect();
|
---|
| 370 | }
|
---|
| 371 | }
|
---|
| 372 |
|
---|
| 373 | /* Check if session was not closed before. */
|
---|
| 374 | if (RT_VALID_PTR(g_hSession))
|
---|
| 375 | {
|
---|
| 376 | rc2 = RTCritSectEnter(&g_hClientCritSect);
|
---|
| 377 | if (RT_SUCCESS(rc2))
|
---|
| 378 | {
|
---|
| 379 | rc2 = vbDrmIpcClientReleaseResources(&g_hClient);
|
---|
| 380 | if (RT_FAILURE(rc2))
|
---|
| 381 | VBClLogError("cannot release IPC session resources, rc=%Rrc\n", rc2);
|
---|
| 382 |
|
---|
| 383 | rc2 = RTCritSectLeave(&g_hClientCritSect);
|
---|
| 384 | if (RT_FAILURE(rc2))
|
---|
| 385 | VBClLogError("unable to leave critical section on worker end, rc=%Rrc\n", rc);
|
---|
| 386 | }
|
---|
| 387 | else
|
---|
| 388 | VBClLogError("unable to enter critical section on worker end, rc=%Rrc\n", rc);
|
---|
| 389 | }
|
---|
| 390 |
|
---|
| 391 | return rc;
|
---|
| 392 | }
|
---|
| 393 |
|
---|
| 394 | /**
|
---|
| 395 | * @interface_method_impl{VBCLSERVICE,pfnStop}
|
---|
| 396 | */
|
---|
| 397 | static DECLCALLBACK(void) vbclSVGASessionStop(void)
|
---|
| 398 | {
|
---|
| 399 | int rc;
|
---|
| 400 |
|
---|
| 401 | /* Check if session was not closed before. */
|
---|
| 402 | if (!RT_VALID_PTR(g_hSession))
|
---|
| 403 | return;
|
---|
| 404 |
|
---|
| 405 | /* Attempt to release any waiting syscall related to RTLocalIpcSessionXXX(). */
|
---|
| 406 | rc = RTLocalIpcSessionFlush(g_hSession);
|
---|
| 407 | if (RT_FAILURE(rc))
|
---|
| 408 | VBClLogError("unable to flush data to IPC connection, rc=%Rrc\n", rc);
|
---|
| 409 |
|
---|
| 410 | rc = RTLocalIpcSessionCancel(g_hSession);
|
---|
| 411 | if (RT_FAILURE(rc))
|
---|
| 412 | VBClLogError("unable to cancel IPC session, rc=%Rrc\n", rc);
|
---|
| 413 | }
|
---|
| 414 |
|
---|
| 415 | /**
|
---|
| 416 | * @interface_method_impl{VBCLSERVICE,pfnTerm}
|
---|
| 417 | */
|
---|
| 418 | static DECLCALLBACK(int) vbclSVGASessionTerm(void)
|
---|
| 419 | {
|
---|
| 420 | int rc = VINF_SUCCESS;
|
---|
| 421 |
|
---|
| 422 | if (g_hSession)
|
---|
| 423 | {
|
---|
| 424 | rc = RTLocalIpcSessionClose(g_hSession);
|
---|
| 425 | g_hSession = 0;
|
---|
| 426 |
|
---|
| 427 | if (RT_FAILURE(rc))
|
---|
| 428 | VBClLogError("unable to close IPC connection, rc=%Rrc\n", rc);
|
---|
| 429 | }
|
---|
| 430 |
|
---|
| 431 | if (g_pDisplayHelper)
|
---|
| 432 | {
|
---|
| 433 | if (g_pDisplayHelper->pfnUnsubscribeDisplayOffsetChangeNotification)
|
---|
| 434 | g_pDisplayHelper->pfnUnsubscribeDisplayOffsetChangeNotification();
|
---|
| 435 |
|
---|
| 436 | if (g_pDisplayHelper->pfnTerm)
|
---|
| 437 | {
|
---|
| 438 | rc = g_pDisplayHelper->pfnTerm();
|
---|
| 439 | if (RT_FAILURE(rc))
|
---|
| 440 | VBClLogError("unable to terminate Desktop Environment helper '%s', rc=%Rrc\n",
|
---|
| 441 | rc, g_pDisplayHelper->pszName);
|
---|
| 442 | }
|
---|
| 443 | }
|
---|
| 444 |
|
---|
| 445 | return VINF_SUCCESS;
|
---|
| 446 | }
|
---|
| 447 |
|
---|
| 448 | VBCLSERVICE g_SvcDisplaySVGASession =
|
---|
| 449 | {
|
---|
| 450 | "vmsvga-session", /* szName */
|
---|
| 451 | "VMSVGA display assistant", /* pszDescription */
|
---|
[98474] | 452 | ".vboxclient-vmsvga-session", /* pszPidFilePathTemplate */
|
---|
[93371] | 453 | NULL, /* pszUsage */
|
---|
| 454 | NULL, /* pszOptions */
|
---|
| 455 | NULL, /* pfnOption */
|
---|
| 456 | vbclSVGASessionInit, /* pfnInit */
|
---|
| 457 | vbclSVGASessionWorker, /* pfnWorker */
|
---|
| 458 | vbclSVGASessionStop, /* pfnStop */
|
---|
| 459 | vbclSVGASessionTerm, /* pfnTerm */
|
---|
| 460 | };
|
---|