VBoxSF-VfsOps.cpp@ 94130

Last change on this file since 94130 was 93115, checked in by vboxsync, 3 years ago
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1	/* $Id: VBoxSF-VfsOps.cpp 93115 2022-01-01 11:31:46Z vboxsync $ */
2	/** @file
3	* VBoxFS - Darwin Shared Folders, Virtual File System Operations.
4	*/
5
6	/*
7	* Copyright (C) 2013-2022 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_SHARED_FOLDERS
23	#include "VBoxSFInternal.h"
24
25	#include <iprt/assert.h>
26	#include <iprt/asm.h>
27	#include <iprt/mem.h>
28	#include <iprt/string.h>
29	#include <VBox/log.h>
30
31
32
33	/**
34	* vfsops::vfs_getattr implementation.
35	*
36	* @returns 0 on success or errno.h value on failure.
37	* @param pMount The mount data structure.
38	* @param pFsAttr Input & output structure.
39	* @param pContext Unused kAuth parameter.
40	*/
41	static int vboxSfDwnVfsGetAttr(mount_t pMount, struct vfs_attr *pFsAttr, vfs_context_t pContext)
42	{
43	PVBOXSFMNTDATA pThis = (PVBOXSFMNTDATA)vfs_fsprivate(pMount);
44	AssertReturn(pThis, EBADMSG);
45	LogFlow(("vboxSfDwnVfsGetAttr: %s\n", pThis->MntInfo.szFolder));
46	RT_NOREF(pContext);
47
48	/*
49	* Get the file system stats from the host.
50	*/
51	int rc;
52	struct MyEmbReq
53	{
54	VBGLIOCIDCHGCMFASTCALL Hdr;
55	VMMDevHGCMCall Call;
56	VBoxSFParmInformation Parms;
57	SHFLVOLINFO VolInfo;
58	} pReq = (struct MyEmbReq )VbglR0PhysHeapAlloc(sizeof(*pReq));
59	if (pReq)
60	{
61	RT_ZERO(pReq->VolInfo);
62
63	VBGLIOCIDCHGCMFASTCALL_INIT(&pReq->Hdr, VbglR0PhysHeapGetPhysAddr(pReq), &pReq->Call, g_SfClientDarwin.idClient,
64	SHFL_FN_INFORMATION, SHFL_CPARMS_INFORMATION, sizeof(*pReq));
65	pReq->Parms.id32Root.type = VMMDevHGCMParmType_32bit;
66	pReq->Parms.id32Root.u.value32 = pThis->hHostFolder.root;
67	pReq->Parms.u64Handle.type = VMMDevHGCMParmType_64bit;
68	pReq->Parms.u64Handle.u.value64 = 0;
69	pReq->Parms.f32Flags.type = VMMDevHGCMParmType_32bit;
70	pReq->Parms.f32Flags.u.value32 = SHFL_INFO_VOLUME \| SHFL_INFO_GET;
71	pReq->Parms.cb32.type = VMMDevHGCMParmType_32bit;
72	pReq->Parms.cb32.u.value32 = sizeof(pReq->VolInfo);
73	pReq->Parms.pInfo.type = VMMDevHGCMParmType_Embedded;
74	pReq->Parms.pInfo.u.Embedded.cbData = sizeof(pReq->VolInfo);
75	pReq->Parms.pInfo.u.Embedded.offData = RT_UOFFSETOF(struct MyEmbReq, VolInfo) - sizeof(VBGLIOCIDCHGCMFASTCALL);
76	pReq->Parms.pInfo.u.Embedded.fFlags = VBOX_HGCM_F_PARM_DIRECTION_FROM_HOST;
77
78	int vrc = VbglR0HGCMFastCall(g_SfClientDarwin.handle, &pReq->Hdr, sizeof(*pReq));
79	if (RT_SUCCESS(vrc))
80	vrc = pReq->Call.header.result;
81	if (RT_SUCCESS(vrc))
82	{
83	/*
84	* Fill in stuff.
85	*/
86	/* Copy over the results we got from the host. */
87	uint32_t cbUnit = pReq->VolInfo.ulBytesPerSector * pReq->VolInfo.ulBytesPerAllocationUnit;
88	VFSATTR_RETURN(pFsAttr, f_bsize, cbUnit);
89	VFSATTR_RETURN(pFsAttr, f_iosize, _64K); /** @todo what's a good block size... */
90	VFSATTR_RETURN(pFsAttr, f_blocks, (uint64_t)pReq->VolInfo.ullTotalAllocationBytes / cbUnit);
91	VFSATTR_RETURN(pFsAttr, f_bavail, (uint64_t)pReq->VolInfo.ullAvailableAllocationBytes / cbUnit);
92	VFSATTR_RETURN(pFsAttr, f_bfree, (uint64_t)pReq->VolInfo.ullAvailableAllocationBytes / cbUnit);
93	VFSATTR_RETURN(pFsAttr, f_bused,
94	((uint64_t)pReq->VolInfo.ullTotalAllocationBytes - (uint64_t)pReq->VolInfo.ullAvailableAllocationBytes) / cbUnit);
95	fsid_t const fsid = { { vfs_statfs(pMount)->f_fsid.val[0], vfs_typenum(pMount) } };
96	VFSATTR_RETURN(pFsAttr, f_fsid, fsid);
97
98	/* f_owner is handled by caller. */
99	/* f_signature is handled by caller. */
100
101	struct timespec TmpTv = { 1084190406, 0 };
102	VFSATTR_RETURN(pFsAttr, f_create_time, TmpTv);
103
104	/*
105	* Unsupported bits.
106	*/
107	/* Dummies for some values we don't support. */
108	VFSATTR_RETURN(pFsAttr, f_objcount, 0);
109	VFSATTR_RETURN(pFsAttr, f_filecount, 0);
110	VFSATTR_RETURN(pFsAttr, f_dircount, 0);
111	VFSATTR_RETURN(pFsAttr, f_maxobjcount, UINT32_MAX);
112	VFSATTR_RETURN(pFsAttr, f_files, UINT32_MAX);
113	VFSATTR_RETURN(pFsAttr, f_ffree, UINT32_MAX);
114	VFSATTR_RETURN(pFsAttr, f_fssubtype, 0);
115	VFSATTR_RETURN(pFsAttr, f_carbon_fsid, 0);
116
117	/* Totally not supported: */
118	VFSATTR_CLEAR_ACTIVE(pFsAttr, f_modify_time);
119	VFSATTR_CLEAR_ACTIVE(pFsAttr, f_access_time);
120	VFSATTR_CLEAR_ACTIVE(pFsAttr, f_backup_time);
121
122	/*
123	* Annoying capability stuff.
124	* The 'valid' bits are only supposed to be set when we know for sure.
125	*/
126	if (VFSATTR_IS_ACTIVE(pFsAttr, f_capabilities))
127	{
128	vol_capabilities_attr_t *pCaps = &pFsAttr->f_capabilities;
129
130	pCaps->valid[VOL_CAPABILITIES_FORMAT] = VOL_CAP_FMT_PERSISTENTOBJECTIDS
131	\| VOL_CAP_FMT_SYMBOLICLINKS
132	\| VOL_CAP_FMT_HARDLINKS
133	\| VOL_CAP_FMT_JOURNAL
134	\| VOL_CAP_FMT_JOURNAL_ACTIVE
135	\| VOL_CAP_FMT_NO_ROOT_TIMES
136	\| VOL_CAP_FMT_SPARSE_FILES
137	\| VOL_CAP_FMT_ZERO_RUNS
138	\| VOL_CAP_FMT_CASE_SENSITIVE
139	\| VOL_CAP_FMT_CASE_PRESERVING
140	\| VOL_CAP_FMT_FAST_STATFS
141	\| VOL_CAP_FMT_2TB_FILESIZE
142	\| VOL_CAP_FMT_OPENDENYMODES
143	\| VOL_CAP_FMT_HIDDEN_FILES
144	\| VOL_CAP_FMT_PATH_FROM_ID
145	\| VOL_CAP_FMT_NO_VOLUME_SIZES
146	\| VOL_CAP_FMT_DECMPFS_COMPRESSION
147	\| VOL_CAP_FMT_64BIT_OBJECT_IDS;
148	pCaps->capabilities[VOL_CAPABILITIES_FORMAT] = VOL_CAP_FMT_2TB_FILESIZE
149	/// @todo \| VOL_CAP_FMT_SYMBOLICLINKS - later
150	/// @todo \| VOL_CAP_FMT_SPARSE_FILES - probably, needs testing.
151	/\| VOL_CAP_FMT_CASE_SENSITIVE - case-insensitive /
152	\| VOL_CAP_FMT_CASE_PRESERVING
153	/// @todo \| VOL_CAP_FMT_HIDDEN_FILES - if windows host.
154	/// @todo \| VOL_CAP_FMT_OPENDENYMODES - if windows host.
155	;
156	pCaps->valid[VOL_CAPABILITIES_INTERFACES] = VOL_CAP_INT_SEARCHFS
157	\| VOL_CAP_INT_ATTRLIST
158	\| VOL_CAP_INT_NFSEXPORT
159	\| VOL_CAP_INT_READDIRATTR
160	\| VOL_CAP_INT_EXCHANGEDATA
161	\| VOL_CAP_INT_COPYFILE
162	\| VOL_CAP_INT_ALLOCATE
163	\| VOL_CAP_INT_VOL_RENAME
164	\| VOL_CAP_INT_ADVLOCK
165	\| VOL_CAP_INT_FLOCK
166	\| VOL_CAP_INT_EXTENDED_SECURITY
167	\| VOL_CAP_INT_USERACCESS
168	\| VOL_CAP_INT_MANLOCK
169	\| VOL_CAP_INT_NAMEDSTREAMS
170	\| VOL_CAP_INT_EXTENDED_ATTR;
171	pCaps->capabilities[VOL_CAPABILITIES_INTERFACES] = 0
172	/// @todo \| VOL_CAP_INT_SEARCHFS
173	/// @todo \| VOL_CAP_INT_COPYFILE
174	/// @todo \| VOL_CAP_INT_READDIRATTR
175	;
176
177	pCaps->valid[VOL_CAPABILITIES_RESERVED1] = 0;
178	pCaps->capabilities[VOL_CAPABILITIES_RESERVED1] = 0;
179
180	pCaps->valid[VOL_CAPABILITIES_RESERVED2] = 0;
181	pCaps->capabilities[VOL_CAPABILITIES_RESERVED2] = 0;
182
183	VFSATTR_SET_SUPPORTED(pFsAttr, f_capabilities);
184	}
185
186
187	/*
188	* Annoying attribute stuff.
189	* The 'valid' bits are only supposed to be set when we know for sure.
190	*/
191	if (VFSATTR_IS_ACTIVE(pFsAttr, f_attributes))
192	{
193	vol_attributes_attr_t *pAt = &pFsAttr->f_attributes;
194
195	pAt->validattr.commonattr = ATTR_CMN_NAME
196	\| ATTR_CMN_DEVID
197	\| ATTR_CMN_FSID
198	\| ATTR_CMN_OBJTYPE
199	\| ATTR_CMN_OBJTAG
200	\| ATTR_CMN_OBJID
201	\| ATTR_CMN_OBJPERMANENTID
202	\| ATTR_CMN_PAROBJID
203	\| ATTR_CMN_SCRIPT
204	\| ATTR_CMN_CRTIME
205	\| ATTR_CMN_MODTIME
206	\| ATTR_CMN_CHGTIME
207	\| ATTR_CMN_ACCTIME
208	\| ATTR_CMN_BKUPTIME
209	\| ATTR_CMN_FNDRINFO
210	\| ATTR_CMN_OWNERID
211	\| ATTR_CMN_GRPID
212	\| ATTR_CMN_ACCESSMASK
213	\| ATTR_CMN_FLAGS
214	\| ATTR_CMN_USERACCESS
215	\| ATTR_CMN_EXTENDED_SECURITY
216	\| ATTR_CMN_UUID
217	\| ATTR_CMN_GRPUUID
218	\| ATTR_CMN_FILEID
219	\| ATTR_CMN_PARENTID
220	\| ATTR_CMN_FULLPATH
221	\| ATTR_CMN_ADDEDTIME;
222	pAt->nativeattr.commonattr = ATTR_CMN_NAME
223	\| ATTR_CMN_DEVID
224	\| ATTR_CMN_FSID
225	\| ATTR_CMN_OBJTYPE
226	\| ATTR_CMN_OBJTAG
227	\| ATTR_CMN_OBJID
228	//\| ATTR_CMN_OBJPERMANENTID
229	\| ATTR_CMN_PAROBJID
230	//\| ATTR_CMN_SCRIPT
231	\| ATTR_CMN_CRTIME
232	\| ATTR_CMN_MODTIME
233	\| ATTR_CMN_CHGTIME
234	\| ATTR_CMN_ACCTIME
235	//\| ATTR_CMN_BKUPTIME
236	//\| ATTR_CMN_FNDRINFO
237	//\| ATTR_CMN_OWNERID
238	//\| ATTR_CMN_GRPID
239	\| ATTR_CMN_ACCESSMASK
240	//\| ATTR_CMN_FLAGS
241	//\| ATTR_CMN_USERACCESS
242	//\| ATTR_CMN_EXTENDED_SECURITY
243	//\| ATTR_CMN_UUID
244	//\| ATTR_CMN_GRPUUID
245	\| ATTR_CMN_FILEID
246	\| ATTR_CMN_PARENTID
247	\| ATTR_CMN_FULLPATH
248	//\| ATTR_CMN_ADDEDTIME
249	;
250	pAt->validattr.volattr = ATTR_VOL_FSTYPE
251	\| ATTR_VOL_SIGNATURE
252	\| ATTR_VOL_SIZE
253	\| ATTR_VOL_SPACEFREE
254	\| ATTR_VOL_SPACEAVAIL
255	\| ATTR_VOL_MINALLOCATION
256	\| ATTR_VOL_ALLOCATIONCLUMP
257	\| ATTR_VOL_IOBLOCKSIZE
258	\| ATTR_VOL_OBJCOUNT
259	\| ATTR_VOL_FILECOUNT
260	\| ATTR_VOL_DIRCOUNT
261	\| ATTR_VOL_MAXOBJCOUNT
262	\| ATTR_VOL_MOUNTPOINT
263	\| ATTR_VOL_NAME
264	\| ATTR_VOL_MOUNTFLAGS
265	\| ATTR_VOL_MOUNTEDDEVICE
266	\| ATTR_VOL_ENCODINGSUSED
267	\| ATTR_VOL_CAPABILITIES
268	\| ATTR_VOL_UUID
269	\| ATTR_VOL_ATTRIBUTES
270	\| ATTR_VOL_INFO;
271	pAt->nativeattr.volattr = ATTR_VOL_FSTYPE
272	//\| ATTR_VOL_SIGNATURE
273	\| ATTR_VOL_SIZE
274	\| ATTR_VOL_SPACEFREE
275	\| ATTR_VOL_SPACEAVAIL
276	\| ATTR_VOL_MINALLOCATION
277	\| ATTR_VOL_ALLOCATIONCLUMP
278	\| ATTR_VOL_IOBLOCKSIZE
279	//\| ATTR_VOL_OBJCOUNT
280	//\| ATTR_VOL_FILECOUNT
281	//\| ATTR_VOL_DIRCOUNT
282	//\| ATTR_VOL_MAXOBJCOUNT
283	//\| ATTR_VOL_MOUNTPOINT - ??
284	\| ATTR_VOL_NAME
285	\| ATTR_VOL_MOUNTFLAGS
286	\| ATTR_VOL_MOUNTEDDEVICE
287	//\| ATTR_VOL_ENCODINGSUSED
288	\| ATTR_VOL_CAPABILITIES
289	//\| ATTR_VOL_UUID
290	\| ATTR_VOL_ATTRIBUTES
291	//\| ATTR_VOL_INFO
292	;
293	pAt->validattr.dirattr = ATTR_DIR_LINKCOUNT
294	\| ATTR_DIR_ENTRYCOUNT
295	\| ATTR_DIR_MOUNTSTATUS;
296	pAt->nativeattr.dirattr = 0 //ATTR_DIR_LINKCOUNT
297	\| ATTR_DIR_ENTRYCOUNT
298	\| ATTR_DIR_MOUNTSTATUS
299	;
300	pAt->validattr.fileattr = ATTR_FILE_LINKCOUNT
301	\| ATTR_FILE_TOTALSIZE
302	\| ATTR_FILE_ALLOCSIZE
303	\| ATTR_FILE_IOBLOCKSIZE
304	\| ATTR_FILE_DEVTYPE
305	\| ATTR_FILE_FORKCOUNT
306	\| ATTR_FILE_FORKLIST
307	\| ATTR_FILE_DATALENGTH
308	\| ATTR_FILE_DATAALLOCSIZE
309	\| ATTR_FILE_RSRCLENGTH
310	\| ATTR_FILE_RSRCALLOCSIZE;
311	pAt->nativeattr.fileattr = 0
312	//\|ATTR_FILE_LINKCOUNT
313	\| ATTR_FILE_TOTALSIZE
314	\| ATTR_FILE_ALLOCSIZE
315	//\| ATTR_FILE_IOBLOCKSIZE
316	\| ATTR_FILE_DEVTYPE
317	//\| ATTR_FILE_FORKCOUNT
318	//\| ATTR_FILE_FORKLIST
319	\| ATTR_FILE_DATALENGTH
320	\| ATTR_FILE_DATAALLOCSIZE
321	\| ATTR_FILE_RSRCLENGTH
322	\| ATTR_FILE_RSRCALLOCSIZE
323	;
324	pAt->validattr.forkattr = ATTR_FORK_TOTALSIZE
325	\| ATTR_FORK_ALLOCSIZE;
326	pAt->nativeattr.forkattr = 0
327	//\| ATTR_FORK_TOTALSIZE
328	//\| ATTR_FORK_ALLOCSIZE
329	;
330	VFSATTR_SET_SUPPORTED(pFsAttr, f_attributes);
331	}
332
333	if (VFSATTR_IS_ACTIVE(pFsAttr, f_vol_name))
334	{
335	RTStrCopy(pFsAttr->f_vol_name, MAXPATHLEN, pThis->MntInfo.szFolder);
336	VFSATTR_SET_SUPPORTED(pFsAttr, f_vol_name);
337	}
338
339	rc = 0;
340	}
341	else
342	{
343	Log(("vboxSfOs2QueryFileInfo: VbglR0SfFsInfo failed: %Rrc\n", vrc));
344	rc = RTErrConvertToErrno(vrc);
345	}
346
347	VbglR0PhysHeapFree(pReq);
348	}
349	else
350	rc = ENOMEM;
351	return rc;
352	}
353
354
355	/**
356	* vfsops::vfs_root implementation.
357	*
358	* @returns 0 on success or errno.h value on failure.
359	* @param pMount The mount data structure.
360	* @param ppVnode Where to return the referenced root node on success.
361	* @param pContext Unused kAuth parameter.
362	*/
363	static int vboxSfDwnVfsRoot(mount_t pMount, vnode_t *ppVnode, vfs_context_t pContext)
364	{
365	PVBOXSFMNTDATA pThis = (PVBOXSFMNTDATA)vfs_fsprivate(pMount);
366	AssertReturn(pThis, EBADMSG);
367	LogFlow(("vboxSfDwnVfsRoot: pThis=%p:{%s}\n", pThis, pThis->MntInfo.szFolder));
368	RT_NOREF(pContext);
369
370	/*
371	* We shouldn't be callable during unmount, should we?
372	*/
373	AssertReturn(vfs_isunmount(pMount), EBUSY);
374
375	/*
376	* There should always be a root node around.
377	*/
378	if (pThis->pVnRoot)
379	{
380	int rc = vnode_get(pThis->pVnRoot);
381	if (rc == 0)
382	{
383	*ppVnode = pThis->pVnRoot;
384	LogFlow(("vboxSfDwnVfsRoot: return %p\n", *ppVnode));
385	return 0;
386	}
387	Log(("vboxSfDwnVfsRoot: vnode_get failed! %d\n", rc));
388	return rc;
389	}
390
391	LogRel(("vboxSfDwnVfsRoot: pVnRoot is NULL!\n"));
392	return EILSEQ;
393	}
394
395
396	/**
397	* vfsops::vfs_umount implementation.
398	*
399	* @returns 0 on success or errno.h value on failure.
400	* @param pMount The mount data.
401	* @param fFlags Unmount flags.
402	* @param pContext kAuth context which we don't care much about.
403	*
404	*/
405	static int vboxSfDwnVfsUnmount(mount_t pMount, int fFlags, vfs_context_t pContext)
406	{
407	PVBOXSFMNTDATA pThis = (PVBOXSFMNTDATA)vfs_fsprivate(pMount);
408	AssertReturn(pThis, 0);
409	LogFlowFunc(("pThis=%p:{%s} fFlags=%#x\n", pThis, pThis->MntInfo.szFolder, fFlags));
410	RT_NOREF(pContext);
411
412	/*
413	* Flush vnodes.
414	*/
415	int rc = vflush(pMount, pThis->pVnRoot, fFlags & MNT_FORCE ? FORCECLOSE : 0);
416	if (rc == 0)
417	{
418	/*
419	* Is the file system still busy?
420	*
421	* Until we find a way of killing any active host calls, we cannot properly
422	* respect the MNT_FORCE flag here. So, MNT_FORCE is ignored here.
423	*/
424	if ( !pThis->pVnRoot
425	\|\| !vnode_isinuse(pThis->pVnRoot, 1))
426	{
427	/*
428	* Release our root vnode reference and do another flush.
429	*/
430	if (pThis->pVnRoot)
431	{
432	vnode_put(pThis->pVnRoot);
433	pThis->pVnRoot = NULL;
434	}
435	vflush(pMount, NULLVP, FORCECLOSE);
436
437	/*
438	* Unmap the shared folder and destroy our mount info structure.
439	*/
440	vfs_setfsprivate(pMount, NULL);
441
442	rc = VbglR0SfUnmapFolder(&g_SfClientDarwin, &pThis->hHostFolder);
443	AssertRC(rc);
444
445	RT_ZERO(*pThis);
446	RTMemFree(pThis);
447
448	vfs_clearflags(pMount, MNT_LOCAL); /* ?? */
449	rc = 0;
450
451	g_cVBoxSfMounts--;
452	}
453	else
454	{
455	Log(("VBoxSF: umount failed: file system busy! (%s)\n", pThis->MntInfo.szFolder));
456	rc = EBUSY;
457	}
458	}
459	return rc;
460	}
461
462
463	/**
464	* vfsops::vfs_start implementation.
465	*/
466	static int vboxSfDwnVfsStart(mount_t pMount, int fFlags, vfs_context_t pContext)
467	{
468	RT_NOREF(pMount, fFlags, pContext);
469	return 0;
470	}
471
472
473	/**
474	* vfsops::vfs_mount implementation.
475	*
476	* @returns 0 on success or errno.h value on failure.
477	* @param pMount The mount data structure.
478	* @param pDevVp The device to mount. Not used by us.
479	* @param pUserData User space address of parameters supplied to mount().
480	* We expect a VBOXSFDRWNMOUNTINFO structure.
481	* @param pContext kAuth context needed in order to authentificate mount
482	* operation.
483	*/
484	static int vboxSfDwnVfsMount(mount_t pMount, vnode_t pDevVp, user_addr_t pUserData, vfs_context_t pContext)
485	{
486	RT_NOREF(pDevVp, pContext);
487
488	/*
489	* We don't support mount updating.
490	*/
491	if (vfs_isupdate(pMount))
492	{
493	LogRel(("VBoxSF: mount: MNT_UPDATE is not supported.\n"));
494	return ENOTSUP;
495	}
496	if (pUserData == USER_ADDR_NULL)
497	{
498	LogRel(("VBoxSF: mount: pUserData is NULL.\n"));
499	return EINVAL;
500	}
501	struct vfsstatfs *pFsStats = vfs_statfs(pMount);
502	AssertReturn(pFsStats, EINVAL);
503
504	/*
505	* Get the mount information from userland.
506	*/
507	PVBOXSFMNTDATA pThis = (PVBOXSFMNTDATA)RTMemAllocZ(sizeof(*pThis));
508	if (!pThis)
509	return ENOMEM;
510	pThis->uidMounter = pFsStats->f_owner;
511
512	int rc = RTR0MemUserCopyFrom(&pThis->MntInfo, (RTR3PTR)pUserData, sizeof(pThis->MntInfo));
513	if (RT_FAILURE(rc))
514	{
515	LogRel(("VBoxSF: mount: Failed to copy in mount user data: %Rrc\n", rc));
516	rc = EFAULT;
517	}
518	else if (pThis->MntInfo.u32Magic != VBOXSFDRWNMOUNTINFO_MAGIC)
519	{
520	LogRel(("VBoxSF: mount: Invalid user data magic (%#x)\n", pThis->MntInfo.u32Magic));
521	rc = EINVAL;
522	}
523	else if ( (rc = RTStrValidateEncodingEx(pThis->MntInfo.szFolder, sizeof(pThis->MntInfo.szFolder),
524	RTSTR_VALIDATE_ENCODING_ZERO_TERMINATED)) != VINF_SUCCESS
525	\|\| pThis->MntInfo.szFolder[0] == '\0')
526	{
527	LogRel(("VBoxSF: mount: Invalid or empty share name!\n"));
528	rc = EINVAL;
529	}
530	else
531	{
532	/*
533	* Try map the shared folder.
534	*/
535	if (vboxSfDwnConnect())
536	{
537	PSHFLSTRING pName = ShflStringDupUtf8(pThis->MntInfo.szFolder);
538	if (pName)
539	{
540	rc = VbglR0SfMapFolder(&g_SfClientDarwin, pName, &pThis->hHostFolder);
541	RTMemFree(pName);
542	if (RT_SUCCESS(rc))
543	{
544
545	/*
546	* Create a root node, that avoid races later.
547	*/
548	pThis->pVnRoot = vboxSfDwnVnAlloc(pMount, VDIR, NULL /pParent/, 0);
549	if (pThis->pVnRoot)
550	{
551	/*
552	* Fill file system stats with dummy data.
553	*/
554	pFsStats->f_bsize = 512;
555	pFsStats->f_iosize = _64K;
556	pFsStats->f_blocks = _1M;
557	pFsStats->f_bavail = _1M / 4 * 3;
558	pFsStats->f_bused = _1M / 4;
559	pFsStats->f_files = 1024;
560	pFsStats->f_ffree = _64K;
561	vfs_getnewfsid(pMount); /* f_fsid */
562	/* pFsStats->f_fowner - don't touch */
563	/* pFsStats->f_fstypename - don't touch */
564	/* pFsStats->f_mntonname - don't touch */
565	RTStrCopy(pFsStats->f_mntfromname, sizeof(pFsStats->f_mntfromname), pThis->MntInfo.szFolder);
566	/* pFsStats->f_fssubtype - don't touch? */
567	/* pFsStats->f_reserved[0] - don't touch? */
568	/* pFsStats->f_reserved[1] - don't touch? */
569
570	/*
571	* We're good. Set private data and flags.
572	*/
573	vfs_setfsprivate(pMount, pThis);
574	vfs_setflags(pMount, MNT_SYNCHRONOUS \| MNT_NOSUID \| MNT_NODEV);
575	/** @todo Consider flags like MNT_NOEXEC ? */
576
577	/// @todo vfs_setauthopaque(pMount)?
578	/// @todo vfs_clearauthopaqueaccess(pMount)?
579	/// @todo vfs_clearextendedsecurity(pMount)?
580
581	LogRel(("VBoxSF: mount: Successfully mounted '%s' (uidMounter=%u).\n",
582	pThis->MntInfo.szFolder, pThis->uidMounter));
583	return 0;
584	}
585
586	LogRel(("VBoxSF: mount: Failed to allocate root node!\n"));
587	rc = ENOMEM;
588	}
589	else
590	{
591	LogRel(("VBoxSF: mount: VbglR0SfMapFolder failed on '%s': %Rrc\n", pThis->MntInfo.szFolder, rc));
592	rc = ENOENT;
593	}
594	}
595	else
596	rc = ENOMEM;
597	}
598	else
599	{
600	LogRel(("VBoxSF: mount: Not connected to shared folders service!\n"));
601	rc = ENOTCONN;
602	}
603	}
604	RTMemFree(pThis);
605	return rc;
606	}
607
608
609	/**
610	* VFS operations
611	*/
612	struct vfsops g_VBoxSfVfsOps =
613	{
614	vboxSfDwnVfsMount,
615	vboxSfDwnVfsStart,
616	vboxSfDwnVfsUnmount,
617	vboxSfDwnVfsRoot,
618	NULL, /* Skipped: vfs_quotactl */
619	vboxSfDwnVfsGetAttr,
620	NULL, /* Skipped: vfs_sync */
621	NULL, /* Skipped: vfs_vget */
622	NULL, /* Skipped: vfs_fhtovp */
623	NULL, /* Skipped: vfs_vptofh */
624	NULL, /* Skipped: vfs_init */
625	NULL, /* Skipped: vfs_sysctl */
626	NULL, /* Skipped: vfs_setattr */
627	/* Reserved */
628	{ NULL, NULL, NULL, NULL, NULL, NULL, NULL, },
629	};

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source: vbox/trunk/src/VBox/Additions/darwin/VBoxSF/VBoxSF-VfsOps.cpp@ 94130

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