int vbglGetDriver(VBGLDRIVER **ppDriver)
{
if (g_vbgldata.status != VbglStatusReady)
{
vbglQueryDriverInfo();
if (g_vbgldata.status != VbglStatusReady)
return VERR_TRY_AGAIN;
}
*ppDriver = &g_vbgldata.driver;
return VINF_SUCCESS;
}
/**
* Checks if VBGL has been initialized.
*
* The client library, this will lazily complete the initialization.
*
* @return VINF_SUCCESS or VERR_VBGL_NOT_INITIALIZED.
*/
int vbglR0Enter (void)
{
int rc;
#ifndef VBGL_VBOXGUEST
if (g_vbgldata.status == VbglStatusInitializing)
{
vbglQueryDriverInfo ();
}
#endif
rc = g_vbgldata.status == VbglStatusReady? VINF_SUCCESS: VERR_VBGL_NOT_INITIALIZED;
// dprintf(("VbglEnter: rc = %d\n", rc));
return rc;
}
DECLVBGL(int) VbglInitClient(void)
{
int rc = VINF_SUCCESS;
if ( g_vbgldata.status == VbglStatusInitializing
|| g_vbgldata.status == VbglStatusReady)
{
/* Initialization is already in process. */
return rc;
}
rc = vbglInitCommon ();
if (RT_SUCCESS(rc))
{
rc = RTSemMutexCreate(&g_vbgldata.mutexDriverInit);
if (RT_SUCCESS(rc))
{
/* Try to obtain VMMDev port via IOCTL to VBoxGuest main driver. */
vbglQueryDriverInfo ();
# ifdef VBOX_WITH_HGCM
rc = vbglR0HGCMInit ();
# endif /* VBOX_WITH_HGCM */
if (RT_FAILURE(rc))
{
RTSemMutexDestroy(g_vbgldata.mutexDriverInit);
g_vbgldata.mutexDriverInit = NIL_RTSEMMUTEX;
}
}
if (RT_FAILURE(rc))
{
vbglTerminateCommon ();
}
}
return rc;
}
