VBoxSF-VNodeOps.cpp

Last change on this file was 98103, checked in by vboxsync, 20 months ago
Copyright year updates by scm.
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1	/* $Id: VBoxSF-VNodeOps.cpp 98103 2023-01-17 14:15:46Z vboxsync $ */
2	/** @file
3	* VBoxSF - Darwin Shared Folders, VNode Operations.
4	*/
5
6
7	/*
8	* Copyright (C) 2013-2023 Oracle and/or its affiliates.
9	*
10	* This file is part of VirtualBox base platform packages, as
11	* available from https://www.virtualbox.org.
12	*
13	* This program is free software; you can redistribute it and/or
14	* modify it under the terms of the GNU General Public License
15	* as published by the Free Software Foundation, in version 3 of the
16	* License.
17	*
18	* This program is distributed in the hope that it will be useful, but
19	* WITHOUT ANY WARRANTY; without even the implied warranty of
20	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
21	* General Public License for more details.
22	*
23	* You should have received a copy of the GNU General Public License
24	* along with this program; if not, see <https://www.gnu.org/licenses>.
25	*
26	* SPDX-License-Identifier: GPL-3.0-only
27	*/
28
29
30	/*********************************************************************************************************************************
31	* Header Files *
32	*********************************************************************************************************************************/
33	#define LOG_GROUP LOG_GROUP_SHARED_FOLDERS
34	#include "VBoxSFInternal.h"
35
36	#include <iprt/mem.h>
37	#include <iprt/assert.h>
38	#include <VBox/log.h>
39
40
41	/*********************************************************************************************************************************
42	* Structures and Typedefs *
43	*********************************************************************************************************************************/
44	struct default_error_args_hack
45	{
46	struct default_error_vdesc_hack
47	{
48	int vdesc_offset;
49	const char *vdesc_name;
50	} const *a_desc;
51	};
52
53
54
55	/**
56	* Default implementation that returns ENOTSUP.
57	*/
58	static int vboxSfDwnVnDefaultError(struct default_error_args_hack *pArgs)
59	{
60	Log(("vboxSfDwnVnDefaultError: %s\n", RT_VALID_PTR(pArgs) && RT_VALID_PTR(pArgs->a_desc) ? pArgs->a_desc->vdesc_name : "??"));
61	RT_NOREF(pArgs);
62	return ENOTSUP;
63	}
64
65
66	static int vboxFsDwnVnGetAttr(struct vnop_getattr_args *pArgs)
67	{
68	#if 1
69	RT_NOREF(pArgs);
70	return ENOTSUP;
71	#else
72
73	vboxvfs_mount_t *pMount;
74	struct vnode_attr *vnode_args;
75	vboxvfs_vnode_t *pVnodeData;
76
77	struct timespec timespec;
78
79	SHFLFSOBJINFO Info;
80	mount_t mp;
81	vnode_t vnode;
82	int rc;
83
84	PDEBUG("Getting vnode attribute...");
85
86	AssertReturn(pArgs, EINVAL);
87
88	vnode = pArgs->a_vp; AssertReturn(vnode, EINVAL);
89	vnode_args = pArgs->a_vap; AssertReturn(vnode_args, EINVAL);
90	mp = vnode_mount(vnode); AssertReturn(mp, EINVAL);
91	pMount = (vboxvfs_mount_t *)vfs_fsprivate(mp); AssertReturn(pMount, EINVAL);
92	pVnodeData = (vboxvfs_vnode_t *)vnode_fsnode(vnode); AssertReturn(pVnodeData, EINVAL);
93
94	lck_rw_lock_shared(pVnodeData->pLock);
95
96	rc = vboxvfs_get_info_internal(mp, pVnodeData->pPath, &Info);
97	if (rc == 0)
98	{
99	/* Set timestamps */
100	RTTimeSpecGetTimespec(&Info.BirthTime, &timespec); VATTR_RETURN(vnode_args, va_create_time, timespec);
101	RTTimeSpecGetTimespec(&Info.AccessTime, &timespec); VATTR_RETURN(vnode_args, va_access_time, timespec);
102	RTTimeSpecGetTimespec(&Info.ModificationTime, &timespec); VATTR_RETURN(vnode_args, va_modify_time, timespec);
103	RTTimeSpecGetTimespec(&Info.ChangeTime, &timespec); VATTR_RETURN(vnode_args, va_change_time, timespec);
104	VATTR_CLEAR_ACTIVE(vnode_args, va_backup_time);
105
106	/* Set owner info. */
107	VATTR_RETURN(vnode_args, va_uid, pMount->owner);
108	VATTR_CLEAR_ACTIVE(vnode_args, va_gid);
109
110	/* Access mode and flags */
111	VATTR_RETURN(vnode_args, va_mode, vboxvfs_h2g_mode_inernal(Info.Attr.fMode));
112	VATTR_RETURN(vnode_args, va_flags, Info.Attr.u.Unix.fFlags);
113
114	/* The current generation number (0 if this information is not available) */
115	VATTR_RETURN(vnode_args, va_gen, Info.Attr.u.Unix.GenerationId);
116
117	VATTR_RETURN(vnode_args, va_rdev, 0);
118	VATTR_RETURN(vnode_args, va_nlink, 2);
119
120	VATTR_RETURN(vnode_args, va_data_size, sizeof(struct dirent)); /* Size of data returned per each readdir() request */
121
122	/* Hope, when it overflows nothing catastrophical will heppen! If we will not assign
123	* a uniq va_fileid to each vnode, `ls`, 'find' (and simmilar tools that uses fts_read() calls) will think that
124	* each sub-directory is self-cycled. */
125	VATTR_RETURN(vnode_args, va_fileid, (pMount->cFileIdCounter++));
126
127	/* Not supported */
128	VATTR_CLEAR_ACTIVE(vnode_args, va_linkid);
129	VATTR_CLEAR_ACTIVE(vnode_args, va_parentid);
130	VATTR_CLEAR_ACTIVE(vnode_args, va_fsid);
131	VATTR_CLEAR_ACTIVE(vnode_args, va_filerev);
132
133	/* Not present on 10.6 */
134	//VATTR_CLEAR_ACTIVE(vnode_args, va_addedtime);
135
136	/** @todo take care about va_encoding (file name encoding) */
137	VATTR_CLEAR_ACTIVE(vnode_args, va_encoding);
138	/** @todo take care about: va_acl */
139	VATTR_CLEAR_ACTIVE(vnode_args, va_acl);
140
141	VATTR_CLEAR_ACTIVE(vnode_args, va_name);
142	VATTR_CLEAR_ACTIVE(vnode_args, va_uuuid);
143	VATTR_CLEAR_ACTIVE(vnode_args, va_guuid);
144
145	VATTR_CLEAR_ACTIVE(vnode_args, va_total_size);
146	VATTR_CLEAR_ACTIVE(vnode_args, va_total_alloc);
147	VATTR_CLEAR_ACTIVE(vnode_args, va_data_alloc);
148	VATTR_CLEAR_ACTIVE(vnode_args, va_iosize);
149
150	VATTR_CLEAR_ACTIVE(vnode_args, va_nchildren);
151	VATTR_CLEAR_ACTIVE(vnode_args, va_dirlinkcount);
152	}
153	else
154	{
155	PDEBUG("getattr: unable to get VBoxVFS object info");
156	}
157
158	lck_rw_unlock_shared(pVnodeData->pLock);
159
160	return rc;
161	#endif
162	}
163
164	#if 0
165	/**
166	* Helper function for vboxvfs_vnode_lookup(): create new vnode.
167	*/
168	static int
169	vboxvfs_vnode_lookup_instantinate_vnode(vnode_t parent_vnode, char entry_name, vnode_t result_vnode)
170	{
171	/* We need to construct full path to vnode in order to get
172	* vboxvfs_get_info_internal() to understand us! */
173
174	char *pszCurDirPath;
175	int cbCurDirPath = MAXPATHLEN;
176
177	mount_t mp = vnode_mount(parent_vnode); AssertReturn(mp, EINVAL);
178	vnode_t vnode;
179
180	int rc;
181
182	pszCurDirPath = (char *)RTMemAllocZ(cbCurDirPath);
183	if (pszCurDirPath)
184	{
185	rc = vn_getpath(parent_vnode, pszCurDirPath, &cbCurDirPath);
186	if (rc == 0 && cbCurDirPath < MAXPATHLEN)
187	{
188	SHFLFSOBJINFO Info;
189	PSHFLSTRING pSHFLPath;
190
191	/* Add '/' between path parts and truncate name if it is too long */
192	strncat(pszCurDirPath, "/", 1); strncat(pszCurDirPath, entry_name, MAXPATHLEN - cbCurDirPath - 1);
193
194	rc = vboxvfs_guest_path_to_shflstring_path_internal(mp, pszCurDirPath, strlen(pszCurDirPath) + 1, &pSHFLPath);
195	if (rc == 0)
196	{
197	rc = vboxvfs_get_info_internal(mp, pSHFLPath, (PSHFLFSOBJINFO)&Info);
198	if (rc == 0)
199	{
200	enum vtype type;
201
202	if (RTFS_IS_DIRECTORY(Info.Attr.fMode)) type = VDIR;
203	else if (RTFS_IS_FILE (Info.Attr.fMode)) type = VREG;
204	else
205	{
206	PDEBUG("Not supported VFS object (%s) type: mode 0x%X",
207	entry_name,
208	Info.Attr.fMode);
209
210	RTMemFree(pszCurDirPath);
211	vboxvfs_put_path_internal((void **)&pSHFLPath);
212	return ENOENT;
213	}
214	/* Create new vnode */
215	rc = vboxvfs_create_vnode_internal(mp, type, parent_vnode, FALSE, pSHFLPath, &vnode);
216	if (rc == 0)
217	{
218	PDEBUG("new vnode object '%s' has been created", entry_name);
219
220	*result_vnode = vnode;
221	RTMemFree(pszCurDirPath);
222
223	return 0;
224	}
225	else
226	PDEBUG("Unable to create vnode: %d", rc);
227	}
228	else
229	PDEBUG("Unable to get host object info: %d", rc);
230
231	vboxvfs_put_path_internal((void **)&pSHFLPath);
232	}
233	else
234	PDEBUG("Unable to convert guest<->host path");
235	}
236	else
237	PDEBUG("Unable to construct vnode path: %d", rc);
238
239	RTMemFree(pszCurDirPath);
240	}
241	else
242	{
243	PDEBUG("Unable to allocate memory for path buffer");
244	rc = ENOMEM;
245	}
246
247	return rc;
248	}
249
250	/**
251	* Helper function for vboxvfs_vnode_lookup(): take care
252	* about '.' and '..' directory entries.
253	*/
254	static int
255	vboxvfs_vnode_lookup_dot_handler(struct vnop_lookup_args pArgs, vnode_t result_vnode)
256	{
257	vnode_t vnode = NULL;
258
259	if (pArgs->a_cnp->cn_flags & ISDOTDOT)
260	{
261	vnode = vnode_getparent(pArgs->a_dvp);
262	if (vnode)
263	{
264	PDEBUG("return parent directory");
265	*result_vnode = vnode;
266	return 0;
267	}
268	else
269	{
270	PDEBUG("return parent directory not found, return current directory");
271	*result_vnode = pArgs->a_dvp;
272	return 0;
273	}
274	}
275	else if ((strncmp(pArgs->a_cnp->cn_nameptr, ".", 1) == 0) &&
276	pArgs->a_cnp->cn_namelen == 1)
277	{
278	PDEBUG("return current directory");
279	*result_vnode = pArgs->a_dvp;
280	return 0;
281	}
282
283	return ENOENT;
284	}
285	#endif
286
287	static int vboxSfDwnVnLookup(struct vnop_lookup_args *pArgs)
288	{
289	#if 1
290	RT_NOREF(pArgs);
291	return ENOTSUP;
292	#else
293	int rc;
294
295	vnode_t vnode;
296	vboxvfs_vnode_t *pVnodeData;
297
298	PDEBUG("Looking up for vnode...");
299
300	AssertReturn(pArgs, EINVAL);
301	AssertReturn(pArgs->a_dvp, EINVAL);
302	AssertReturn(vnode_isdir(pArgs->a_dvp), EINVAL);
303	AssertReturn(pArgs->a_cnp, EINVAL);
304	AssertReturn(pArgs->a_cnp->cn_nameptr, EINVAL);
305	AssertReturn(pArgs->a_vpp, EINVAL);
306
307	pVnodeData = (vboxvfs_vnode_t *)vnode_fsnode(pArgs->a_dvp);
308	AssertReturn(pVnodeData, EINVAL);
309	AssertReturn(pVnodeData->pLock, EINVAL);
310
311	/*
312	todo: take care about pArgs->a_cnp->cn_nameiop
313	*/
314
315	if (pArgs->a_cnp->cn_nameiop == LOOKUP) PDEBUG("LOOKUP");
316	else if (pArgs->a_cnp->cn_nameiop == CREATE) PDEBUG("CREATE");
317	else if (pArgs->a_cnp->cn_nameiop == RENAME) PDEBUG("RENAME");
318	else if (pArgs->a_cnp->cn_nameiop == DELETE) PDEBUG("DELETE");
319	else PDEBUG("Unknown cn_nameiop: 0x%X", (int)pArgs->a_cnp->cn_nameiop);
320
321	lck_rw_lock_exclusive(pVnodeData->pLock);
322
323	/* Take care about '.' and '..' entries */
324	if (vboxvfs_vnode_lookup_dot_handler(pArgs, &vnode) == 0)
325	{
326	vnode_get(vnode);
327	*pArgs->a_vpp = vnode;
328
329	lck_rw_unlock_exclusive(pVnodeData->pLock);
330
331	return 0;
332	}
333
334	/* Look into VFS cache and attempt to find previously allocated vnode there. */
335	rc = cache_lookup(pArgs->a_dvp, &vnode, pArgs->a_cnp);
336	if (rc == -1) /* Record found */
337	{
338	PDEBUG("Found record in VFS cache");
339
340	/* Check if VFS object still exist on a host side */
341	if (vboxvfs_exist_internal(vnode))
342	{
343	/* Prepare & return cached vnode */
344	vnode_get(vnode);
345	*pArgs->a_vpp = vnode;
346
347	rc = 0;
348	}
349	else
350	{
351	/* If vnode exist in guets VFS cache, but not exist on a host -- just forget it. */
352	cache_purge(vnode);
353	/** @todo free vnode data here */
354	rc = ENOENT;
355	}
356	}
357	else
358	{
359	PDEBUG("cache_lookup() returned %d, create new VFS vnode", rc);
360
361	rc = vboxvfs_vnode_lookup_instantinate_vnode(pArgs->a_dvp, pArgs->a_cnp->cn_nameptr, &vnode);
362	if (rc == 0)
363	{
364	cache_enter(pArgs->a_dvp, vnode, pArgs->a_cnp);
365	*pArgs->a_vpp = vnode;
366	}
367	else
368	{
369	rc = ENOENT;
370	}
371	}
372
373	lck_rw_unlock_exclusive(pVnodeData->pLock);
374
375	return rc;
376	#endif
377	}
378
379	static int vboxSfDwnVnOpen(struct vnop_open_args *pArgs)
380	{
381	#if 1
382	RT_NOREF(pArgs);
383	return ENOTSUP;
384	#else
385	vnode_t vnode;
386	vboxvfs_vnode_t *pVnodeData;
387	uint32_t fHostFlags;
388	mount_t mp;
389	vboxvfs_mount_t *pMount;
390
391	int rc;
392
393	PDEBUG("Opening vnode...");
394
395	AssertReturn(pArgs, EINVAL);
396
397	vnode = pArgs->a_vp; AssertReturn(vnode, EINVAL);
398	pVnodeData = (vboxvfs_vnode_t *)vnode_fsnode(vnode); AssertReturn(pVnodeData, EINVAL);
399	mp = vnode_mount(vnode); AssertReturn(mp, EINVAL);
400	pMount = (vboxvfs_mount_t *)vfs_fsprivate(mp); AssertReturn(pMount, EINVAL);
401
402	lck_rw_lock_exclusive(pVnodeData->pLock);
403
404	if (vnode_isinuse(vnode, 0))
405	{
406	PDEBUG("vnode '%s' (handle 0x%X) already has VBoxVFS object handle assigned, just return ok",
407	(char *)pVnodeData->pPath->String.utf8,
408	(int)pVnodeData->pHandle);
409
410	lck_rw_unlock_exclusive(pVnodeData->pLock);
411	return 0;
412	}
413
414	/* At this point we must make sure that nobody is using VBoxVFS object handle */
415	//if (pVnodeData->Handle != SHFL_HANDLE_NIL)
416	//{
417	// PDEBUG("vnode has active VBoxVFS object handle set, aborting");
418	// lck_rw_unlock_exclusive(pVnodeData->pLock);
419	// return EINVAL;
420	//}
421
422	fHostFlags = vboxvfs_g2h_mode_inernal(pArgs->a_mode);
423	fHostFlags \|= (vnode_isdir(vnode) ? SHFL_CF_DIRECTORY : 0);
424
425	SHFLHANDLE Handle;
426	rc = vboxvfs_open_internal(pMount, pVnodeData->pPath, fHostFlags, &Handle);
427	if (rc == 0)
428	{
429	PDEBUG("Open success: '%s' (handle 0x%X)",
430	(char *)pVnodeData->pPath->String.utf8,
431	(int)Handle);
432
433	pVnodeData->pHandle = Handle;
434	}
435	else
436	{
437	PDEBUG("Unable to open: '%s': %d",
438	(char *)pVnodeData->pPath->String.utf8,
439	rc);
440	}
441
442	lck_rw_unlock_exclusive(pVnodeData->pLock);
443
444	return rc;
445	#endif
446	}
447
448	static int vboxSfDwnVnClose(struct vnop_close_args *pArgs)
449	{
450	#if 1
451	RT_NOREF(pArgs);
452	return ENOTSUP;
453	#else
454
455	vnode_t vnode;
456	mount_t mp;
457	vboxvfs_vnode_t *pVnodeData;
458	vboxvfs_mount_t *pMount;
459
460	int rc;
461
462	PDEBUG("Closing vnode...");
463
464	AssertReturn(pArgs, EINVAL);
465
466	vnode = pArgs->a_vp; AssertReturn(vnode, EINVAL);
467	pVnodeData = (vboxvfs_vnode_t *)vnode_fsnode(vnode); AssertReturn(pVnodeData, EINVAL);
468	mp = vnode_mount(vnode); AssertReturn(mp, EINVAL);
469	pMount = (vboxvfs_mount_t *)vfs_fsprivate(mp); AssertReturn(pMount, EINVAL);
470
471	lck_rw_lock_exclusive(pVnodeData->pLock);
472
473	if (vnode_isinuse(vnode, 0))
474	{
475	PDEBUG("vnode '%s' (handle 0x%X) is still in use, just return ok",
476	(char *)pVnodeData->pPath->String.utf8,
477	(int)pVnodeData->pHandle);
478
479	lck_rw_unlock_exclusive(pVnodeData->pLock);
480	return 0;
481	}
482
483	/* At this point we must make sure that vnode has VBoxVFS object handle assigned */
484	if (pVnodeData->pHandle == SHFL_HANDLE_NIL)
485	{
486	PDEBUG("vnode has no active VBoxVFS object handle set, aborting");
487	lck_rw_unlock_exclusive(pVnodeData->pLock);
488	return EINVAL;
489	}
490
491	rc = vboxvfs_close_internal(pMount, pVnodeData->pHandle);
492	if (rc == 0)
493	{
494	PDEBUG("Close success: '%s' (handle 0x%X)",
495	(char *)pVnodeData->pPath->String.utf8,
496	(int)pVnodeData->pHandle);
497
498	/* Forget about previously assigned VBoxVFS object handle */
499	pVnodeData->pHandle = SHFL_HANDLE_NIL;
500	}
501	else
502	{
503	PDEBUG("Unable to close: '%s' (handle 0x%X): %d",
504	(char *)pVnodeData->pPath->String.utf8,
505	(int)pVnodeData->pHandle, rc);
506	}
507
508	lck_rw_unlock_exclusive(pVnodeData->pLock);
509
510	return rc;
511	#endif
512	}
513
514	#if 0
515	/**
516	* Convert SHFLDIRINFO to struct dirent and copy it back to user.
517	*/
518	static int
519	vboxvfs_vnode_readdir_copy_data(ino_t index, SHFLDIRINFO Info, struct uio uio, int *numdirent)
520	{
521	struct dirent entry;
522
523	int rc;
524
525	entry.d_ino = index;
526	entry.d_reclen = (__uint16_t)sizeof(entry);
527
528	/* Detect dir entry type */
529	if (RTFS_IS_DIRECTORY(Info->Info.Attr.fMode))
530	entry.d_type = DT_DIR;
531	else if (RTFS_IS_FILE(Info->Info.Attr.fMode))
532	entry.d_type = DT_REG;
533	else
534	{
535	PDEBUG("Unknown type of host file: mode 0x%X", (int)Info->Info.Attr.fMode);
536	return ENOTSUP;
537	}
538
539	entry.d_namlen = (__uint8_t)min(sizeof(entry.d_name), Info->name.u16Size);
540	memcpy(entry.d_name, Info->name.String.utf8, entry.d_namlen);
541
542	rc = uiomove((char *)&entry, sizeof(entry), uio);
543	if (rc == 0)
544	{
545	uio_setoffset(uio, index * sizeof(struct dirent));
546	*numdirent = (int)index;
547
548	PDEBUG("discovered entry: '%s' (%d bytes), item #%d", entry.d_name, (int)entry.d_namlen, (int)index);
549	}
550	else
551	{
552	PDEBUG("Failed to return dirent data item #%d (%d)", (int)index, rc);
553	}
554
555	return rc;
556	}
557	#endif
558
559	static int vboxSfDwnVnReadDir(struct vnop_readdir_args *pArgs)
560	{
561	#if 1
562	RT_NOREF(pArgs);
563	return ENOTSUP;
564	#else
565	vboxvfs_mount_t *pMount;
566	vboxvfs_vnode_t *pVnodeData;
567	SHFLDIRINFO *Info;
568	uint32_t cbInfo;
569	mount_t mp;
570	vnode_t vnode;
571	struct uio *uio;
572
573	int rc = 0, rc2;
574
575	PDEBUG("Reading directory...");
576
577	AssertReturn(pArgs, EINVAL);
578	AssertReturn(pArgs->a_eofflag, EINVAL);
579	AssertReturn(pArgs->a_numdirent, EINVAL);
580
581	uio = pArgs->a_uio; AssertReturn(uio, EINVAL);
582	vnode = pArgs->a_vp; AssertReturn(vnode, EINVAL); AssertReturn(vnode_isdir(vnode), EINVAL);
583	pVnodeData = (vboxvfs_vnode_t *)vnode_fsnode(vnode); AssertReturn(pVnodeData, EINVAL);
584	mp = vnode_mount(vnode); AssertReturn(mp, EINVAL);
585	pMount = (vboxvfs_mount_t *)vfs_fsprivate(mp); AssertReturn(pMount, EINVAL);
586
587	lck_rw_lock_shared(pVnodeData->pLock);
588
589	cbInfo = sizeof(Info) + MAXPATHLEN;
590	Info = (SHFLDIRINFO *)RTMemAllocZ(cbInfo);
591	if (!Info)
592	{
593	PDEBUG("No memory to allocate internal data");
594	lck_rw_unlock_shared(pVnodeData->pLock);
595	return ENOMEM;
596	}
597
598	uint32_t index = (uint32_t)uio_offset(uio) / (uint32_t)sizeof(struct dirent);
599	uint32_t cFiles = 0;
600
601	PDEBUG("Exploring VBoxVFS directory (%s), handle (0x%.8X), offset (0x%X), count (%d)", (char *)pVnodeData->pPath->String.utf8, (int)pVnodeData->pHandle, index, uio_iovcnt(uio));
602
603	/* Currently, there is a problem when VbglR0SfDirInfo() is not able to
604	* continue retrieve directory content if the same VBoxVFS handle is used.
605	* This macro forces to use a new handle in readdir() callback. If enabled,
606	* the original handle (obtained in open() callback is ignored). */
607
608	SHFLHANDLE Handle;
609	rc = vboxvfs_open_internal(pMount,
610	pVnodeData->pPath,
611	SHFL_CF_DIRECTORY \| SHFL_CF_ACCESS_READ \| SHFL_CF_ACT_OPEN_IF_EXISTS \| SHFL_CF_ACT_FAIL_IF_NEW,
612	&Handle);
613	if (rc != 0)
614	{
615	PDEBUG("Unable to open dir: %d", rc);
616	RTMemFree(Info);
617	lck_rw_unlock_shared(pVnodeData->pLock);
618	return rc;
619	}
620
621	#if 0
622	rc = VbglR0SfDirInfo(&g_vboxSFClient, &pMount->pMap, Handle, 0, 0, index, &cbInfo, (PSHFLDIRINFO)Info, &cFiles);
623	#else
624	SHFLSTRING pMask = vboxvfs_construct_shflstring("", strlen("*"));
625	if (pMask)
626	{
627	for (uint32_t cSkip = 0; (cSkip < index + 1) && (rc == VINF_SUCCESS); cSkip++)
628	{
629	//rc = VbglR0SfDirInfo(&g_vboxSFClient, &pMount->pMap, Handle, 0 /* pMask /, 0 / SHFL_LIST_RETURN_ONE */, 0, &cbInfo, (PSHFLDIRINFO)Info, &cFiles);
630
631	uint32_t cbReturned = cbInfo;
632	//rc = VbglR0SfDirInfo(&g_vboxSFClient, &pMount->pMap, Handle, pMask, SHFL_LIST_RETURN_ONE, 0, &cbReturned, (PSHFLDIRINFO)Info, &cFiles);
633	rc = VbglR0SfDirInfo(&g_SfClientDarwin, &pMount->pMap, Handle, 0, SHFL_LIST_RETURN_ONE, 0,
634	&cbReturned, (PSHFLDIRINFO)Info, &cFiles);
635
636	}
637
638	PDEBUG("read %d files", cFiles);
639	RTMemFree(pMask);
640	}
641	else
642	{
643	PDEBUG("Can't alloc mask");
644	rc = ENOMEM;
645	}
646	#endif
647	rc2 = vboxvfs_close_internal(pMount, Handle);
648	if (rc2 != 0)
649	{
650	PDEBUG("Unable to close directory: %s: %d",
651	pVnodeData->pPath->String.utf8,
652	rc2);
653	}
654
655	switch (rc)
656	{
657	case VINF_SUCCESS:
658	{
659	rc = vboxvfs_vnode_readdir_copy_data((ino_t)(index + 1), Info, uio, pArgs->a_numdirent);
660	break;
661	}
662
663	case VERR_NO_MORE_FILES:
664	{
665	PDEBUG("No more entries in directory");
666	*(pArgs->a_eofflag) = 1;
667	break;
668	}
669
670	default:
671	{
672	PDEBUG("VbglR0SfDirInfo() for item #%d has failed: %d", (int)index, (int)rc);
673	rc = EINVAL;
674	break;
675	}
676	}
677
678	RTMemFree(Info);
679	lck_rw_unlock_shared(pVnodeData->pLock);
680
681	return rc;
682	#endif
683	}
684
685
686	static int vboxSfDwnVnPathConf(struct vnop_pathconf_args *pArgs)
687	{
688	Log(("vboxSfDwnVnPathConf:\n"));
689	RT_NOREF(pArgs);
690	return 0;
691	}
692
693
694	/**
695	* vnop_reclaim implementation.
696	*
697	* VBoxVFS reclaim callback.
698	* Called when vnode is going to be deallocated. Should release
699	* all the VBoxVFS resources that correspond to current vnode object.
700	*
701	* @param pArgs Operation arguments passed from VFS layer.
702	*
703	* @return 0 on success, BSD error code otherwise.
704	*/
705	static int vboxSfDwnVnReclaim(struct vnop_reclaim_args *pArgs)
706	{
707	AssertReturn(pArgs && pArgs->a_vp, EINVAL);
708
709	/* Check that it's not a root node that's in use. */
710	PVBOXSFMNTDATA pMntData = (PVBOXSFMNTDATA)vfs_fsprivate(vnode_mount(pArgs->a_vp));
711	AssertReturn(!pMntData \|\| pMntData->pVnRoot != pArgs->a_vp, EBUSY);
712
713	/* Get the private data and free it. */
714	PVBOXSFDWNVNDATA pVnData = (PVBOXSFDWNVNDATA)vnode_fsnode(pArgs->a_vp);
715	AssertPtrReturn(pVnData, 0);
716
717	if (pVnData->hHandle != SHFL_HANDLE_NIL)
718	{
719	/** @todo can this happen? */
720	pVnData->hHandle = SHFL_HANDLE_NIL;
721	}
722
723	RTMemFree(pVnData);
724	return 0;
725	}
726
727
728	/**
729	* Allocates a vnode.
730	*
731	* @returns Pointer to the new VNode, NULL if out of memory.
732	* @param pMount The file system mount structure.
733	* @param enmType The vnode type.
734	* @param pParent The parent vnode, NULL if root.
735	* @param cbFile The file size
736	*/
737	vnode_t vboxSfDwnVnAlloc(mount_t pMount, enum vtype enmType, vnode_t pParent, uint64_t cbFile)
738	{
739	/*
740	* Create our private data.
741	*/
742	PVBOXSFDWNVNDATA pVnData = (PVBOXSFDWNVNDATA)RTMemAllocZ(sizeof(*pVnData));
743	if (pVnData)
744	{
745	pVnData->hHandle = SHFL_HANDLE_NIL;
746
747	struct vnode_fsparam VnParms;
748	RT_ZERO(VnParms);
749	VnParms.vnfs_mp = pMount;
750	VnParms.vnfs_vtype = enmType;
751	VnParms.vnfs_str = "vboxsf";
752	VnParms.vnfs_dvp = pParent;
753	VnParms.vnfs_fsnode = pVnData;
754	VnParms.vnfs_vops = g_papfnVBoxSfDwnVnDirOpsVector;
755	VnParms.vnfs_markroot = pParent == NULL;
756	VnParms.vnfs_marksystem = 0;
757	VnParms.vnfs_rdev = 0;
758	VnParms.vnfs_filesize = cbFile;
759	VnParms.vnfs_cnp = 0;
760	VnParms.vnfs_flags = VNFS_NOCACHE;
761
762	vnode_t pVnRet;
763	int rc = vnode_create(VNCREATE_FLAVOR, VCREATESIZE, &VnParms, &pVnRet);
764	if (rc == 0)
765	return pVnRet;
766	RTMemFree(pVnData);
767	}
768	printf("vboxSfDwnVnAlloc: out of memory!\n");
769	return NULL;
770	}
771
772
773	/**
774	* Vnode operations.
775	*/
776	static struct vnodeopv_entry_desc g_VBoxSfDirOpsDescList[] =
777	{
778	#define VNODEOPFUNC int()(void )
779	{ &vnop_default_desc, (VNODEOPFUNC)vboxSfDwnVnDefaultError },
780	//{ &vnop_access_desc, (VNODEOPFUNC)vboxSfDwnVnDefaultError }, - probably not needed.
781	//{ &vnop_advlock_desc, (VNODEOPFUNC)vboxSfDwnVnDefaultError }, - later.
782	//{ &vnop_allocate_desc, (VNODEOPFUNC)vboxSfDwnVnDefaultError }, - maybe, need shfl function
783	{ &vnop_blktooff_desc, (VNODEOPFUNC)vboxSfDwnVnDefaultError },
784	//{ &vnop_blockmap_desc, (VNODEOPFUNC)vboxSfDwnVnDefaultError },
785	//{ &vnop_bwrite_desc, (VNODEOPFUNC)vboxSfDwnVnDefaultError },
786	{ &vnop_close_desc, (VNODEOPFUNC)vboxSfDwnVnClose },
787	//{ &vnop_copyfile_desc, (VNODEOPFUNC)vboxSfDwnVnDefaultError },
788	{ &vnop_create_desc, (VNODEOPFUNC)vboxSfDwnVnDefaultError },
789	//{ &vnop_exchange_desc, (VNODEOPFUNC)vboxSfDwnVnDefaultError },
790	{ &vnop_fsync_desc, (VNODEOPFUNC)vboxSfDwnVnDefaultError },
791	{ &vnop_getattr_desc, (VNODEOPFUNC)vboxFsDwnVnGetAttr },
792	//{ &vnop_getnamedstream_desc, (VNODEOPFUNC)vboxSfDwnVnDefaultError },
793	//{ &vnop_getxattr_desc, (VNODEOPFUNC)vboxSfDwnVnDefaultError },
794	{ &vnop_inactive_desc, (VNODEOPFUNC)vboxSfDwnVnDefaultError },
795	{ &vnop_ioctl_desc, (VNODEOPFUNC)vboxSfDwnVnDefaultError },
796	{ &vnop_link_desc, (VNODEOPFUNC)vboxSfDwnVnDefaultError },
797	//{ &vnop_listxattr_desc, (VNODEOPFUNC)vboxSfDwnVnDefaultError },
798	{ &vnop_lookup_desc, (VNODEOPFUNC)vboxSfDwnVnLookup },
799	{ &vnop_mkdir_desc, (VNODEOPFUNC)vboxSfDwnVnDefaultError },
800	{ &vnop_mknod_desc, (VNODEOPFUNC)vboxSfDwnVnDefaultError },
801	{ &vnop_mmap_desc, (VNODEOPFUNC)vboxSfDwnVnDefaultError },
802	{ &vnop_mnomap_desc, (VNODEOPFUNC)vboxSfDwnVnDefaultError },
803	{ &vnop_offtoblk_desc, (VNODEOPFUNC)vboxSfDwnVnDefaultError },
804	{ &vnop_open_desc, (VNODEOPFUNC)vboxSfDwnVnOpen },
805	{ &vnop_pagein_desc, (VNODEOPFUNC)vboxSfDwnVnDefaultError },
806	{ &vnop_pageout_desc, (VNODEOPFUNC)vboxSfDwnVnDefaultError },
807	{ &vnop_pathconf_desc, (VNODEOPFUNC)vboxSfDwnVnPathConf },
808	/* { &vnop_print_desc, (VNODEOPFUNC)vboxSfDwnVnDefaultError }, undefined in ML */
809	{ &vnop_read_desc, (VNODEOPFUNC)vboxSfDwnVnDefaultError },
810	{ &vnop_readdir_desc, (VNODEOPFUNC)vboxSfDwnVnReadDir },
811	//{ &vnop_readdirattr_desc, (VNODEOPFUNC)vboxSfDwnVnDefaultError }, - hfs specific.
812	{ &vnop_readlink_desc, (VNODEOPFUNC)vboxSfDwnVnDefaultError },
813	{ &vnop_reclaim_desc, (VNODEOPFUNC)vboxSfDwnVnReclaim },
814	{ &vnop_remove_desc, (VNODEOPFUNC)vboxSfDwnVnDefaultError },
815	//{ &vnop_removexattr_desc, (VNODEOPFUNC)vboxSfDwnVnDefaultError },
816	{ &vnop_rename_desc, (VNODEOPFUNC)vboxSfDwnVnDefaultError },
817	//{ &vnop_revoke_desc, (VNODEOPFUNC)vboxSfDwnVnDefaultError }, - not needed
818	{ &vnop_rmdir_desc, (VNODEOPFUNC)vboxSfDwnVnDefaultError },
819	{ &vnop_searchfs_desc, (VNODEOPFUNC)err_searchfs },
820	//{ &vnop_select_desc, (VNODEOPFUNC)vboxSfDwnVnDefaultError }, - not needed
821	{ &vnop_setattr_desc, (VNODEOPFUNC)vboxSfDwnVnDefaultError },
822	{ &vnop_setxattr_desc, (VNODEOPFUNC)vboxSfDwnVnDefaultError },
823	//{ &vnop_strategy_desc, (VNODEOPFUNC)vboxSfDwnVnDefaultError }, - not needed
824	{ &vnop_symlink_desc, (VNODEOPFUNC)vboxSfDwnVnDefaultError },
825	/* { &vnop_truncate_desc, (VNODEOPFUNC)vboxSfDwnVnDefaultError }, undefined in ML */
826	//{ &vnop_whiteout_desc, (VNODEOPFUNC)vboxSfDwnVnDefaultError }, - not needed/supported
827	{ &vnop_write_desc, (VNODEOPFUNC)vboxSfDwnVnDefaultError },
828	{ NULL, (VNODEOPFUNC)NULL },
829	#undef VNODEOPFUNC
830	};
831
832	/** ??? */
833	int (*g_papfnVBoxSfDwnVnDirOpsVector)(void );
834
835	/**
836	* VNode operation descriptors.
837	*/
838	struct vnodeopv_desc g_VBoxSfVnodeOpvDesc =
839	{
840	&g_papfnVBoxSfDwnVnDirOpsVector,
841	g_VBoxSfDirOpsDescList
842	};
843

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source: vbox/trunk/src/VBox/Additions/darwin/VBoxSF/VBoxSF-VNodeOps.cpp

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