DrvNamedPipe.cpp@ 35353

Last change on this file since 35353 was 35353, checked in by vboxsync, 14 years ago
Move the misc files the in src/VBox/Devices/ directory into a build/ subdirectory, changing their names to match the target module.
Property svn:eol-style set to `native` Property svn:keywords set to `Author Date Id Revision`
File size: 23.2 KB

Line
1	/* $Id: DrvNamedPipe.cpp 35353 2010-12-27 17:25:52Z vboxsync $ */
2	/** @file
3	* Named pipe / local socket stream driver.
4	*/
5
6	/*
7	* Copyright (C) 2006-2010 Oracle Corporation
8	*
9	* This file is part of VirtualBox Open Source Edition (OSE), as
10	* available from http://www.virtualbox.org. This file is free software;
11	* you can redistribute it and/or modify it under the terms of the GNU
12	* General Public License (GPL) as published by the Free Software
13	* Foundation, in version 2 as it comes in the "COPYING" file of the
14	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16	*/
17
18
19	/*******************************************************************************
20	* Header Files *
21	*******************************************************************************/
22	#define LOG_GROUP LOG_GROUP_DRV_NAMEDPIPE
23	#include <VBox/vmm/pdmdrv.h>
24	#include <iprt/assert.h>
25	#include <iprt/file.h>
26	#include <iprt/stream.h>
27	#include <iprt/alloc.h>
28	#include <iprt/string.h>
29	#include <iprt/semaphore.h>
30	#include <iprt/uuid.h>
31
32	#include "VBoxDD.h"
33
34	#ifdef RT_OS_WINDOWS
35	# include <windows.h>
36	#else /* !RT_OS_WINDOWS */
37	# include <errno.h>
38	# include <unistd.h>
39	# include <sys/types.h>
40	# include <sys/socket.h>
41	# include <sys/un.h>
42	# ifndef SHUT_RDWR /* OS/2 */
43	# define SHUT_RDWR 3
44	# endif
45	#endif /* !RT_OS_WINDOWS */
46
47
48	/*******************************************************************************
49	* Defined Constants And Macros *
50	*******************************************************************************/
51	/** Converts a pointer to DRVNAMEDPIPE::IMedia to a PDRVNAMEDPIPE. */
52	#define PDMISTREAM_2_DRVNAMEDPIPE(pInterface) ( (PDRVNAMEDPIPE)((uintptr_t)pInterface - RT_OFFSETOF(DRVNAMEDPIPE, IStream)) )
53
54	/** Converts a pointer to PDMDRVINS::IBase to a PPDMDRVINS. */
55	#define PDMIBASE_2_DRVINS(pInterface) ( (PPDMDRVINS)((uintptr_t)pInterface - RT_OFFSETOF(PDMDRVINS, IBase)) )
56
57
58	/*******************************************************************************
59	* Structures and Typedefs *
60	*******************************************************************************/
61	/**
62	* Named pipe driver instance data.
63	*
64	* @implements PDMISTREAM
65	*/
66	typedef struct DRVNAMEDPIPE
67	{
68	/** The stream interface. */
69	PDMISTREAM IStream;
70	/** Pointer to the driver instance. */
71	PPDMDRVINS pDrvIns;
72	/** Pointer to the named pipe file name. (Freed by MM) */
73	char *pszLocation;
74	/** Flag whether VirtualBox represents the server or client side. */
75	bool fIsServer;
76	#ifdef RT_OS_WINDOWS
77	/** File handle of the named pipe. */
78	HANDLE NamedPipe;
79	/** Overlapped structure for writes. */
80	OVERLAPPED OverlappedWrite;
81	/** Overlapped structure for reads. */
82	OVERLAPPED OverlappedRead;
83	/** Listen thread wakeup semaphore */
84	RTSEMEVENTMULTI ListenSem;
85	#else /* !RT_OS_WINDOWS */
86	/** Socket handle of the local socket for server. */
87	int LocalSocketServer;
88	/** Socket handle of the local socket. */
89	int LocalSocket;
90	#endif /* !RT_OS_WINDOWS */
91	/** Thread for listening for new connections. */
92	RTTHREAD ListenThread;
93	/** Flag to signal listening thread to shut down. */
94	bool volatile fShutdown;
95	} DRVNAMEDPIPE, *PDRVNAMEDPIPE;
96
97
98	/*******************************************************************************
99	* Internal Functions *
100	*******************************************************************************/
101
102
103	/** @copydoc PDMISTREAM::pfnRead */
104	static DECLCALLBACK(int) drvNamedPipeRead(PPDMISTREAM pInterface, void pvBuf, size_t pcbRead)
105	{
106	int rc = VINF_SUCCESS;
107	PDRVNAMEDPIPE pThis = PDMISTREAM_2_DRVNAMEDPIPE(pInterface);
108	LogFlow(("%s: pvBuf=%p pcbRead=%#x (%s)\n", __FUNCTION__, pvBuf, pcbRead, pThis->pszLocation));
109
110	Assert(pvBuf);
111	#ifdef RT_OS_WINDOWS
112	if (pThis->NamedPipe != INVALID_HANDLE_VALUE)
113	{
114	DWORD cbReallyRead;
115	pThis->OverlappedRead.Offset = 0;
116	pThis->OverlappedRead.OffsetHigh = 0;
117	if (!ReadFile(pThis->NamedPipe, pvBuf, (DWORD)*pcbRead, &cbReallyRead, &pThis->OverlappedRead))
118	{
119	DWORD uError = GetLastError();
120
121	if ( uError == ERROR_PIPE_LISTENING
122	\|\| uError == ERROR_PIPE_NOT_CONNECTED)
123	{
124	/* No connection yet/anymore */
125	cbReallyRead = 0;
126
127	/* wait a bit or else we'll be called right back. */
128	RTThreadSleep(100);
129	}
130	else
131	{
132	if (uError == ERROR_IO_PENDING)
133	{
134	uError = 0;
135
136	/* Wait for incoming bytes. */
137	if (GetOverlappedResult(pThis->NamedPipe, &pThis->OverlappedRead, &cbReallyRead, TRUE) == FALSE)
138	uError = GetLastError();
139	}
140
141	rc = RTErrConvertFromWin32(uError);
142	Log(("drvNamedPipeRead: ReadFile returned %d (%Rrc)\n", uError, rc));
143	}
144	}
145
146	if (RT_FAILURE(rc))
147	{
148	Log(("drvNamedPipeRead: FileRead returned %Rrc fShutdown=%d\n", rc, pThis->fShutdown));
149	if ( !pThis->fShutdown
150	&& ( rc == VERR_EOF
151	\|\| rc == VERR_BROKEN_PIPE
152	)
153	)
154	{
155	FlushFileBuffers(pThis->NamedPipe);
156	DisconnectNamedPipe(pThis->NamedPipe);
157	if (!pThis->fIsServer)
158	{
159	CloseHandle(pThis->NamedPipe);
160	pThis->NamedPipe = INVALID_HANDLE_VALUE;
161	}
162	/* pretend success */
163	rc = VINF_SUCCESS;
164	}
165	cbReallyRead = 0;
166	}
167	*pcbRead = (size_t)cbReallyRead;
168	}
169	#else /* !RT_OS_WINDOWS */
170	if (pThis->LocalSocket != -1)
171	{
172	ssize_t cbReallyRead;
173	cbReallyRead = recv(pThis->LocalSocket, pvBuf, *pcbRead, 0);
174	if (cbReallyRead == 0)
175	{
176	int tmp = pThis->LocalSocket;
177	pThis->LocalSocket = -1;
178	close(tmp);
179	}
180	else if (cbReallyRead == -1)
181	{
182	cbReallyRead = 0;
183	rc = RTErrConvertFromErrno(errno);
184	}
185	*pcbRead = cbReallyRead;
186	}
187	#endif /* !RT_OS_WINDOWS */
188	else
189	{
190	RTThreadSleep(100);
191	*pcbRead = 0;
192	}
193
194	LogFlow(("%s: pcbRead=%zu returns %Rrc\n", __FUNCTION__, pcbRead, rc));
195	return rc;
196	}
197
198
199	/** @copydoc PDMISTREAM::pfnWrite */
200	static DECLCALLBACK(int) drvNamedPipeWrite(PPDMISTREAM pInterface, const void pvBuf, size_t pcbWrite)
201	{
202	int rc = VINF_SUCCESS;
203	PDRVNAMEDPIPE pThis = PDMISTREAM_2_DRVNAMEDPIPE(pInterface);
204	LogFlow(("%s: pvBuf=%p pcbWrite=%#x (%s)\n", __FUNCTION__, pvBuf, pcbWrite, pThis->pszLocation));
205
206	Assert(pvBuf);
207	#ifdef RT_OS_WINDOWS
208	if (pThis->NamedPipe != INVALID_HANDLE_VALUE)
209	{
210	DWORD cbWritten = (DWORD)*pcbWrite;
211	pThis->OverlappedWrite.Offset = 0;
212	pThis->OverlappedWrite.OffsetHigh = 0;
213	if (!WriteFile(pThis->NamedPipe, pvBuf, cbWritten, NULL, &pThis->OverlappedWrite))
214	{
215	DWORD uError = GetLastError();
216
217	if ( uError == ERROR_PIPE_LISTENING
218	\|\| uError == ERROR_PIPE_NOT_CONNECTED)
219	{
220	/* No connection yet/anymore; just discard the write (pretending everything was written). */;
221	}
222	else if (uError != ERROR_IO_PENDING)
223	{
224	rc = RTErrConvertFromWin32(uError);
225	Log(("drvNamedPipeWrite: WriteFile returned %d (%Rrc)\n", uError, rc));
226	cbWritten = 0;
227	}
228	else
229	{
230	/* Wait for the write to complete. */
231	if (GetOverlappedResult(pThis->NamedPipe, &pThis->OverlappedWrite, &cbWritten, TRUE /bWait/) == FALSE)
232	rc = RTErrConvertFromWin32(uError = GetLastError());
233	}
234	}
235
236	if (RT_FAILURE(rc))
237	{
238	/** @todo WriteFile(pipe) has been observed to return ERROR_NO_DATA
239	* (VERR_NO_DATA) instead of ERROR_BROKEN_PIPE, when the pipe is
240	* disconnected. */
241	if ( rc == VERR_EOF
242	\|\| rc == VERR_BROKEN_PIPE)
243	{
244	FlushFileBuffers(pThis->NamedPipe);
245	DisconnectNamedPipe(pThis->NamedPipe);
246	if (!pThis->fIsServer)
247	{
248	CloseHandle(pThis->NamedPipe);
249	pThis->NamedPipe = INVALID_HANDLE_VALUE;
250	}
251	/* pretend success */
252	rc = VINF_SUCCESS;
253	}
254	cbWritten = 0;
255	}
256	*pcbWrite = cbWritten;
257	}
258	#else /* !RT_OS_WINDOWS */
259	if (pThis->LocalSocket != -1)
260	{
261	ssize_t cbWritten;
262	cbWritten = send(pThis->LocalSocket, pvBuf, *pcbWrite, 0);
263	if (cbWritten == 0)
264	{
265	int tmp = pThis->LocalSocket;
266	pThis->LocalSocket = -1;
267	close(tmp);
268	}
269	else if (cbWritten == -1)
270	{
271	cbWritten = 0;
272	rc = RTErrConvertFromErrno(errno);
273	}
274	*pcbWrite = cbWritten;
275	}
276	#endif /* !RT_OS_WINDOWS */
277
278	LogFlow(("%s: returns %Rrc\n", __FUNCTION__, rc));
279	return rc;
280	}
281
282
283	/**
284	* @interface_method_impl{PDMIBASE,pfnQueryInterface}
285	*/
286	static DECLCALLBACK(void ) drvNamedPipeQueryInterface(PPDMIBASE pInterface, const char pszIID)
287	{
288	PPDMDRVINS pDrvIns = PDMIBASE_2_DRVINS(pInterface);
289	PDRVNAMEDPIPE pThis = PDMINS_2_DATA(pDrvIns, PDRVNAMEDPIPE);
290	PDMIBASE_RETURN_INTERFACE(pszIID, PDMIBASE, &pDrvIns->IBase);
291	PDMIBASE_RETURN_INTERFACE(pszIID, PDMISTREAM, &pThis->IStream);
292	return NULL;
293	}
294
295
296	/* -=-=-=-=- listen thread -=-=-=-=- */
297
298	/**
299	* Receive thread loop.
300	*
301	* @returns 0 on success.
302	* @param ThreadSelf Thread handle to this thread.
303	* @param pvUser User argument.
304	*/
305	static DECLCALLBACK(int) drvNamedPipeListenLoop(RTTHREAD ThreadSelf, void *pvUser)
306	{
307	PDRVNAMEDPIPE pThis = (PDRVNAMEDPIPE)pvUser;
308	int rc = VINF_SUCCESS;
309	#ifdef RT_OS_WINDOWS
310	HANDLE NamedPipe = pThis->NamedPipe;
311	HANDLE hEvent = CreateEvent(NULL, TRUE, FALSE, 0);
312	#endif
313
314	while (RT_LIKELY(!pThis->fShutdown))
315	{
316	#ifdef RT_OS_WINDOWS
317	OVERLAPPED overlapped;
318
319	memset(&overlapped, 0, sizeof(overlapped));
320	overlapped.hEvent = hEvent;
321
322	BOOL fConnected = ConnectNamedPipe(NamedPipe, &overlapped);
323	if ( !fConnected
324	&& !pThis->fShutdown)
325	{
326	DWORD hrc = GetLastError();
327
328	if (hrc == ERROR_IO_PENDING)
329	{
330	DWORD dummy;
331
332	hrc = 0;
333	if (GetOverlappedResult(pThis->NamedPipe, &overlapped, &dummy, TRUE) == FALSE)
334	hrc = GetLastError();
335
336	}
337
338	if (pThis->fShutdown)
339	break;
340
341	if (hrc == ERROR_PIPE_CONNECTED)
342	{
343	RTSemEventMultiWait(pThis->ListenSem, 250);
344	}
345	else if (hrc != ERROR_SUCCESS)
346	{
347	rc = RTErrConvertFromWin32(hrc);
348	LogRel(("NamedPipe%d: ConnectNamedPipe failed, rc=%Rrc\n", pThis->pDrvIns->iInstance, rc));
349	break;
350	}
351	}
352	#else /* !RT_OS_WINDOWS */
353	if (listen(pThis->LocalSocketServer, 0) == -1)
354	{
355	rc = RTErrConvertFromErrno(errno);
356	LogRel(("NamedPipe%d: listen failed, rc=%Rrc\n", pThis->pDrvIns->iInstance, rc));
357	break;
358	}
359	int s = accept(pThis->LocalSocketServer, NULL, NULL);
360	if (s == -1)
361	{
362	rc = RTErrConvertFromErrno(errno);
363	LogRel(("NamedPipe%d: accept failed, rc=%Rrc\n", pThis->pDrvIns->iInstance, rc));
364	break;
365	}
366	if (pThis->LocalSocket != -1)
367	{
368	LogRel(("NamedPipe%d: only single connection supported\n", pThis->pDrvIns->iInstance));
369	close(s);
370	}
371	else
372	pThis->LocalSocket = s;
373
374	#endif /* !RT_OS_WINDOWS */
375	}
376
377	#ifdef RT_OS_WINDOWS
378	CloseHandle(hEvent);
379	#endif
380	return VINF_SUCCESS;
381	}
382
383	/* -=-=-=-=- PDMDRVREG -=-=-=-=- */
384
385	/**
386	* Common worker for drvNamedPipePowerOff and drvNamedPipeDestructor.
387	*
388	* @param pThis The instance data.
389	*/
390	static void drvNamedPipeShutdownListener(PDRVNAMEDPIPE pThis)
391	{
392	/*
393	* Signal shutdown of the listener thread.
394	*/
395	pThis->fShutdown = true;
396	#ifdef RT_OS_WINDOWS
397	if ( pThis->fIsServer
398	&& pThis->NamedPipe != INVALID_HANDLE_VALUE)
399	{
400	FlushFileBuffers(pThis->NamedPipe);
401	DisconnectNamedPipe(pThis->NamedPipe);
402
403	BOOL fRc = CloseHandle(pThis->NamedPipe);
404	Assert(fRc); NOREF(fRc);
405	pThis->NamedPipe = INVALID_HANDLE_VALUE;
406
407	/* Wake up listen thread */
408	if (pThis->ListenSem != NIL_RTSEMEVENT)
409	RTSemEventMultiSignal(pThis->ListenSem);
410	}
411	#else
412	if ( pThis->fIsServer
413	&& pThis->LocalSocketServer != -1)
414	{
415	int rc = shutdown(pThis->LocalSocketServer, SHUT_RDWR);
416	AssertRC(rc == 0); NOREF(rc);
417
418	rc = close(pThis->LocalSocketServer);
419	AssertRC(rc == 0);
420	pThis->LocalSocketServer = -1;
421	}
422	#endif
423	}
424
425
426	/**
427	* Power off a named pipe stream driver instance.
428	*
429	* This does most of the destruction work, to avoid ordering dependencies.
430	*
431	* @param pDrvIns The driver instance data.
432	*/
433	static DECLCALLBACK(void) drvNamedPipePowerOff(PPDMDRVINS pDrvIns)
434	{
435	PDRVNAMEDPIPE pThis = PDMINS_2_DATA(pDrvIns, PDRVNAMEDPIPE);
436	LogFlow(("%s: %s\n", __FUNCTION__, pThis->pszLocation));
437
438	drvNamedPipeShutdownListener(pThis);
439	}
440
441
442	/**
443	* Destruct a named pipe stream driver instance.
444	*
445	* Most VM resources are freed by the VM. This callback is provided so that
446	* any non-VM resources can be freed correctly.
447	*
448	* @param pDrvIns The driver instance data.
449	*/
450	static DECLCALLBACK(void) drvNamedPipeDestruct(PPDMDRVINS pDrvIns)
451	{
452	PDRVNAMEDPIPE pThis = PDMINS_2_DATA(pDrvIns, PDRVNAMEDPIPE);
453	LogFlow(("%s: %s\n", __FUNCTION__, pThis->pszLocation));
454	PDMDRV_CHECK_VERSIONS_RETURN_VOID(pDrvIns);
455
456	drvNamedPipeShutdownListener(pThis);
457
458	/*
459	* While the thread exits, clean up as much as we can.
460	*/
461	#ifdef RT_OS_WINDOWS
462	if (pThis->NamedPipe != INVALID_HANDLE_VALUE)
463	{
464	CloseHandle(pThis->NamedPipe);
465	pThis->NamedPipe = INVALID_HANDLE_VALUE;
466	}
467	if (pThis->OverlappedRead.hEvent != NULL)
468	{
469	CloseHandle(pThis->OverlappedRead.hEvent);
470	pThis->OverlappedRead.hEvent = NULL;
471	}
472	if (pThis->OverlappedWrite.hEvent != NULL)
473	{
474	CloseHandle(pThis->OverlappedWrite.hEvent);
475	pThis->OverlappedWrite.hEvent = NULL;
476	}
477	#else /* !RT_OS_WINDOWS */
478	Assert(pThis->LocalSocketServer == -1);
479	if (pThis->LocalSocket != -1)
480	{
481	int rc = shutdown(pThis->LocalSocket, SHUT_RDWR);
482	AssertRC(rc == 0); NOREF(rc);
483
484	rc = close(pThis->LocalSocket);
485	Assert(rc == 0);
486	pThis->LocalSocket = -1;
487	}
488	if ( pThis->fIsServer
489	&& pThis->pszLocation)
490	RTFileDelete(pThis->pszLocation);
491	#endif /* !RT_OS_WINDOWS */
492
493	MMR3HeapFree(pThis->pszLocation);
494	pThis->pszLocation = NULL;
495
496	/*
497	* Wait for the thread.
498	*/
499	if (pThis->ListenThread != NIL_RTTHREAD)
500	{
501	int rc = RTThreadWait(pThis->ListenThread, 30000, NULL);
502	if (RT_SUCCESS(rc))
503	pThis->ListenThread = NIL_RTTHREAD;
504	else
505	LogRel(("NamedPipe%d: listen thread did not terminate (%Rrc)\n", pDrvIns->iInstance, rc));
506	}
507
508	/*
509	* The last bits of cleanup.
510	*/
511	#ifdef RT_OS_WINDOWS
512	if (pThis->ListenSem != NIL_RTSEMEVENT)
513	{
514	RTSemEventMultiDestroy(pThis->ListenSem);
515	pThis->ListenSem = NIL_RTSEMEVENT;
516	}
517	#endif
518	}
519
520
521	/**
522	* Construct a named pipe stream driver instance.
523	*
524	* @copydoc FNPDMDRVCONSTRUCT
525	*/
526	static DECLCALLBACK(int) drvNamedPipeConstruct(PPDMDRVINS pDrvIns, PCFGMNODE pCfg, uint32_t fFlags)
527	{
528	PDRVNAMEDPIPE pThis = PDMINS_2_DATA(pDrvIns, PDRVNAMEDPIPE);
529	PDMDRV_CHECK_VERSIONS_RETURN(pDrvIns);
530
531	/*
532	* Init the static parts.
533	*/
534	pThis->pDrvIns = pDrvIns;
535	pThis->pszLocation = NULL;
536	pThis->fIsServer = false;
537	#ifdef RT_OS_WINDOWS
538	pThis->NamedPipe = INVALID_HANDLE_VALUE;
539	pThis->ListenSem = NIL_RTSEMEVENTMULTI;
540	pThis->OverlappedWrite.hEvent = NULL;
541	pThis->OverlappedRead.hEvent = NULL;
542	#else /* !RT_OS_WINDOWS */
543	pThis->LocalSocketServer = -1;
544	pThis->LocalSocket = -1;
545	#endif /* !RT_OS_WINDOWS */
546	pThis->ListenThread = NIL_RTTHREAD;
547	pThis->fShutdown = false;
548	/* IBase */
549	pDrvIns->IBase.pfnQueryInterface = drvNamedPipeQueryInterface;
550	/* IStream */
551	pThis->IStream.pfnRead = drvNamedPipeRead;
552	pThis->IStream.pfnWrite = drvNamedPipeWrite;
553
554	/*
555	* Validate and read the configuration.
556	*/
557	PDMDRV_VALIDATE_CONFIG_RETURN(pDrvIns, "Location\|IsServer", "");
558
559	int rc = CFGMR3QueryStringAlloc(pCfg, "Location", &pThis->pszLocation);
560	if (RT_FAILURE(rc))
561	return PDMDrvHlpVMSetError(pDrvIns, rc, RT_SRC_POS,
562	N_("Configuration error: querying \"Location\" resulted in %Rrc"), rc);
563	rc = CFGMR3QueryBool(pCfg, "IsServer", &pThis->fIsServer);
564	if (RT_FAILURE(rc))
565	return PDMDrvHlpVMSetError(pDrvIns, rc, RT_SRC_POS,
566	N_("Configuration error: querying \"IsServer\" resulted in %Rrc"), rc);
567
568	/*
569	* Create/Open the pipe.
570	*/
571	#ifdef RT_OS_WINDOWS
572	if (pThis->fIsServer)
573	{
574	pThis->NamedPipe = CreateNamedPipe(pThis->pszLocation,
575	PIPE_ACCESS_DUPLEX \| FILE_FLAG_OVERLAPPED,
576	PIPE_TYPE_BYTE \| PIPE_READMODE_BYTE \| PIPE_WAIT,
577	1, /nMaxInstances/
578	32, /nOutBufferSize/
579	32, /nOutBufferSize/
580	10000, /nDefaultTimeOut/
581	NULL); /* lpSecurityAttributes*/
582	if (pThis->NamedPipe == INVALID_HANDLE_VALUE)
583	{
584	rc = RTErrConvertFromWin32(GetLastError());
585	LogRel(("NamedPipe%d: CreateNamedPipe failed rc=%Rrc\n", pThis->pDrvIns->iInstance));
586	return PDMDrvHlpVMSetError(pDrvIns, rc, RT_SRC_POS, N_("NamedPipe#%d failed to create named pipe %s"),
587	pDrvIns->iInstance, pThis->pszLocation);
588	}
589
590	rc = RTSemEventMultiCreate(&pThis->ListenSem);
591	AssertRCReturn(rc, rc);
592
593	rc = RTThreadCreate(&pThis->ListenThread, drvNamedPipeListenLoop, (void *)pThis, 0,
594	RTTHREADTYPE_IO, RTTHREADFLAGS_WAITABLE, "SerPipe");
595	if (RT_FAILURE(rc))
596	return PDMDrvHlpVMSetError(pDrvIns, rc, RT_SRC_POS, N_("NamedPipe#%d failed to create listening thread"),
597	pDrvIns->iInstance);
598
599	}
600	else
601	{
602	/* Connect to the named pipe. */
603	pThis->NamedPipe = CreateFile(pThis->pszLocation, GENERIC_READ \| GENERIC_WRITE, 0, NULL,
604	OPEN_EXISTING, FILE_FLAG_OVERLAPPED, NULL);
605	if (pThis->NamedPipe == INVALID_HANDLE_VALUE)
606	{
607	rc = RTErrConvertFromWin32(GetLastError());
608	LogRel(("NamedPipe%d: CreateFile failed rc=%Rrc\n", pThis->pDrvIns->iInstance));
609	return PDMDrvHlpVMSetError(pDrvIns, rc, RT_SRC_POS, N_("NamedPipe#%d failed to connect to named pipe %s"),
610	pDrvIns->iInstance, pThis->pszLocation);
611	}
612	}
613
614	memset(&pThis->OverlappedWrite, 0, sizeof(pThis->OverlappedWrite));
615	pThis->OverlappedWrite.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
616	AssertReturn(pThis->OverlappedWrite.hEvent != NULL, VERR_OUT_OF_RESOURCES);
617
618	memset(&pThis->OverlappedRead, 0, sizeof(pThis->OverlappedRead));
619	pThis->OverlappedRead.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
620	AssertReturn(pThis->OverlappedRead.hEvent != NULL, VERR_OUT_OF_RESOURCES);
621
622	#else /* !RT_OS_WINDOWS */
623	int s = socket(PF_UNIX, SOCK_STREAM, 0);
624	if (s == -1)
625	return PDMDrvHlpVMSetError(pDrvIns, RTErrConvertFromErrno(errno), RT_SRC_POS,
626	N_("NamedPipe#%d failed to create local socket"), pDrvIns->iInstance);
627
628	struct sockaddr_un addr;
629	memset(&addr, 0, sizeof(addr));
630	addr.sun_family = AF_UNIX;
631	strncpy(addr.sun_path, pThis->pszLocation, sizeof(addr.sun_path) - 1);
632
633	if (pThis->fIsServer)
634	{
635	/* Bind address to the local socket. */
636	pThis->LocalSocketServer = s;
637	RTFileDelete(pThis->pszLocation);
638	if (bind(s, (struct sockaddr *)&addr, sizeof(addr)) == -1)
639	return PDMDrvHlpVMSetError(pDrvIns, RTErrConvertFromErrno(errno), RT_SRC_POS,
640	N_("NamedPipe#%d failed to bind to local socket %s"),
641	pDrvIns->iInstance, pThis->pszLocation);
642	rc = RTThreadCreate(&pThis->ListenThread, drvNamedPipeListenLoop, (void *)pThis, 0,
643	RTTHREADTYPE_IO, RTTHREADFLAGS_WAITABLE, "SerPipe");
644	if (RT_FAILURE(rc))
645	return PDMDrvHlpVMSetError(pDrvIns, rc, RT_SRC_POS,
646	N_("NamedPipe#%d failed to create listening thread"), pDrvIns->iInstance);
647	}
648	else
649	{
650	/* Connect to the local socket. */
651	pThis->LocalSocket = s;
652	if (connect(s, (struct sockaddr *)&addr, sizeof(addr)) == -1)
653	return PDMDrvHlpVMSetError(pDrvIns, RTErrConvertFromErrno(errno), RT_SRC_POS,
654	N_("NamedPipe#%d failed to connect to local socket %s"),
655	pDrvIns->iInstance, pThis->pszLocation);
656	}
657	#endif /* !RT_OS_WINDOWS */
658
659	LogRel(("NamedPipe: location %s, %s\n", pThis->pszLocation, pThis->fIsServer ? "server" : "client"));
660	return VINF_SUCCESS;
661	}
662
663
664	/**
665	* Named pipe driver registration record.
666	*/
667	const PDMDRVREG g_DrvNamedPipe =
668	{
669	/* u32Version */
670	PDM_DRVREG_VERSION,
671	/* szName */
672	"NamedPipe",
673	/* szRCMod */
674	"",
675	/* szR0Mod */
676	"",
677	/* pszDescription */
678	"Named Pipe stream driver.",
679	/* fFlags */
680	PDM_DRVREG_FLAGS_HOST_BITS_DEFAULT,
681	/* fClass. */
682	PDM_DRVREG_CLASS_STREAM,
683	/* cMaxInstances */
684	~0,
685	/* cbInstance */
686	sizeof(DRVNAMEDPIPE),
687	/* pfnConstruct */
688	drvNamedPipeConstruct,
689	/* pfnDestruct */
690	drvNamedPipeDestruct,
691	/* pfnRelocate */
692	NULL,
693	/* pfnIOCtl */
694	NULL,
695	/* pfnPowerOn */
696	NULL,
697	/* pfnReset */
698	NULL,
699	/* pfnSuspend */
700	NULL,
701	/* pfnResume */
702	NULL,
703	/* pfnAttach */
704	NULL,
705	/* pfnDetach */
706	NULL,
707	/* pfnPowerOff */
708	drvNamedPipePowerOff,
709	/* pfnSoftReset */
710	NULL,
711	/* u32EndVersion */
712	PDM_DRVREG_VERSION
713	};
714

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source: vbox/trunk/src/VBox/Devices/Serial/DrvNamedPipe.cpp@ 35353

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