xref: /titanic_41/usr/src/uts/common/fs/smbsrv/smb_vops.c (revision 7206bf49b1fe641544165ee97f63856da95e0868)
1 /*
2  * CDDL HEADER START
3  *
4  * The contents of this file are subject to the terms of the
5  * Common Development and Distribution License (the "License").
6  * You may not use this file except in compliance with the License.
7  *
8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9  * or http://www.opensolaris.org/os/licensing.
10  * See the License for the specific language governing permissions
11  * and limitations under the License.
12  *
13  * When distributing Covered Code, include this CDDL HEADER in each
14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15  * If applicable, add the following below this CDDL HEADER, with the
16  * fields enclosed by brackets "[]" replaced with your own identifying
17  * information: Portions Copyright [yyyy] [name of copyright owner]
18  *
19  * CDDL HEADER END
20  */
21 /*
22  * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
23  * Copyright 2013 Nexenta Systems, Inc.  All rights reserved.
24  */
25 
26 #include <sys/types.h>
27 #include <sys/stat.h>
28 #include <sys/uio.h>
29 #include <sys/statvfs.h>
30 #include <sys/vnode.h>
31 #include <sys/thread.h>
32 #include <sys/pathname.h>
33 #include <sys/cred.h>
34 #include <sys/extdirent.h>
35 #include <sys/nbmlock.h>
36 #include <sys/share.h>
37 #include <sys/fcntl.h>
38 #include <nfs/lm.h>
39 
40 #include <smbsrv/smb_kproto.h>
41 #include <smbsrv/string.h>
42 #include <smbsrv/smb_vops.h>
43 #include <smbsrv/smb_fsops.h>
44 
45 /*
46  * CATIA support
47  *
48  * CATIA V4 is a UNIX product and uses characters in filenames that
49  * are considered invalid by Windows. CATIA V5 is available on both
50  * UNIX and Windows.  Thus, as CATIA customers migrate from V4 to V5,
51  * some V4 files could become inaccessible to windows clients if the
52  * filename contains the characters that are considered illegal in
53  * Windows.  In order to address this issue an optional character
54  * translation is applied to filenames at the smb_vop interface.
55  *
56  * Character Translation Table
57  * ----------------------------------
58  * Unix-char (v4) | Windows-char (v5)
59  * ----------------------------------
60  *        *       |  0x00a4  Currency Sign
61  *        |       |  0x00a6  Broken Bar
62  *        "       |  0x00a8  Diaeresis
63  *        <       |  0x00ab  Left-Pointing Double Angle Quotation Mark
64  *        >       |  0x00bb  Right-Pointing Double Angle Quotation Mark
65  *        ?       |  0x00bf  Inverted Question mark
66  *        :       |  0x00f7  Division Sign
67  *        /       |  0x00f8  Latin Small Letter o with stroke
68  *        \       |  0x00ff  Latin Small Letter Y with Diaeresis
69  *
70  *
71  * Two lookup tables are used to perform the character translation:
72  *
73  * smb_catia_v5_lookup - provides the mapping between UNIX ASCII (v4)
74  * characters and equivalent or translated wide characters.
75  * It is indexed by the decimal value of the ASCII character (0-127).
76  *
77  * smb_catia_v4_lookup - provides the mapping between wide characters
78  * in the range from 0x00A4 to 0x00FF and their UNIX (v4) equivalent
79  * (in wide character format).  It is indexed by the decimal value of
80  * the wide character (164-255) with an offset of -164.
81  * If this translation produces a filename containing a '/' create, mkdir
82  * or rename (to the '/' name)  operations will not be permitted. It is
83  * not valid to create a filename with a '/' in it. However, if such a
84  * file already exists other operations (e.g, lookup, delete, rename)
85  * are permitted on it.
86  */
87 
88 /* number of characters mapped */
89 #define	SMB_CATIA_NUM_MAPS		9
90 
91 /* Windows Characters used in special character mapping */
92 #define	SMB_CATIA_WIN_CURRENCY		0x00a4
93 #define	SMB_CATIA_WIN_BROKEN_BAR	0x00a6
94 #define	SMB_CATIA_WIN_DIAERESIS		0x00a8
95 #define	SMB_CATIA_WIN_LEFT_ANGLE	0x00ab
96 #define	SMB_CATIA_WIN_RIGHT_ANGLE	0x00bb
97 #define	SMB_CATIA_WIN_INVERTED_QUESTION	0x00bf
98 #define	SMB_CATIA_WIN_DIVISION		0x00f7
99 #define	SMB_CATIA_WIN_LATIN_O		0x00f8
100 #define	SMB_CATIA_WIN_LATIN_Y		0x00ff
101 
102 #define	SMB_CATIA_V4_LOOKUP_LOW		SMB_CATIA_WIN_CURRENCY
103 #define	SMB_CATIA_V4_LOOKUP_UPPER	SMB_CATIA_WIN_LATIN_Y
104 #define	SMB_CATIA_V4_LOOKUP_MAX		\
105 	(SMB_CATIA_V4_LOOKUP_UPPER - SMB_CATIA_V4_LOOKUP_LOW + 1)
106 #define	SMB_CATIA_V5_LOOKUP_MAX		0x0080
107 
108 typedef struct smb_catia_map
109 {
110 	unsigned char unixchar;	/* v4 */
111 	smb_wchar_t winchar;	/* v5 */
112 } smb_catia_map_t;
113 
114 smb_catia_map_t const catia_maps[SMB_CATIA_NUM_MAPS] =
115 {
116 	{'"',  SMB_CATIA_WIN_DIAERESIS},
117 	{'*',  SMB_CATIA_WIN_CURRENCY},
118 	{':',  SMB_CATIA_WIN_DIVISION},
119 	{'<',  SMB_CATIA_WIN_LEFT_ANGLE},
120 	{'>',  SMB_CATIA_WIN_RIGHT_ANGLE},
121 	{'?',  SMB_CATIA_WIN_INVERTED_QUESTION},
122 	{'\\', SMB_CATIA_WIN_LATIN_Y},
123 	{'/',  SMB_CATIA_WIN_LATIN_O},
124 	{'|',  SMB_CATIA_WIN_BROKEN_BAR}
125 };
126 
127 static smb_wchar_t smb_catia_v5_lookup[SMB_CATIA_V5_LOOKUP_MAX];
128 static smb_wchar_t smb_catia_v4_lookup[SMB_CATIA_V4_LOOKUP_MAX];
129 
130 static void smb_vop_setup_xvattr(smb_attr_t *smb_attr, xvattr_t *xvattr);
131 static void smb_sa_to_va_mask(uint_t sa_mask, uint_t *va_maskp);
132 static callb_cpr_t *smb_lock_frlock_callback(flk_cb_when_t, void *);
133 static void smb_vop_catia_init();
134 
135 extern sysid_t lm_alloc_sysidt();
136 
137 #define	SMB_AT_MAX	16
138 static const uint_t smb_attrmap[SMB_AT_MAX] = {
139 	0,
140 	AT_TYPE,
141 	AT_MODE,
142 	AT_UID,
143 	AT_GID,
144 	AT_FSID,
145 	AT_NODEID,
146 	AT_NLINK,
147 	AT_SIZE,
148 	AT_ATIME,
149 	AT_MTIME,
150 	AT_CTIME,
151 	AT_RDEV,
152 	AT_BLKSIZE,
153 	AT_NBLOCKS,
154 	AT_SEQ
155 };
156 
157 static boolean_t	smb_vop_initialized = B_FALSE;
158 caller_context_t	smb_ct;
159 
160 /*
161  * smb_vop_init
162  *
163  * This function is not multi-thread safe. The caller must make sure only one
164  * thread makes the call.
165  */
166 int
smb_vop_init(void)167 smb_vop_init(void)
168 {
169 	if (smb_vop_initialized)
170 		return (0);
171 	/*
172 	 * The caller_context will be used primarily for range locking.
173 	 * Since the CIFS server is mapping its locks to POSIX locks,
174 	 * only one pid is used for operations originating from the
175 	 * CIFS server (to represent CIFS in the VOP_FRLOCK routines).
176 	 *
177 	 * XXX: Should smb_ct be per-zone?
178 	 */
179 	smb_ct.cc_sysid = lm_alloc_sysidt();
180 	if (smb_ct.cc_sysid == LM_NOSYSID)
181 		return (ENOMEM);
182 
183 	smb_ct.cc_caller_id = fs_new_caller_id();
184 	smb_ct.cc_pid = IGN_PID;
185 	smb_ct.cc_flags = 0;
186 	smb_vop_catia_init();
187 
188 	smb_vop_initialized = B_TRUE;
189 	return (0);
190 }
191 
192 /*
193  * smb_vop_fini
194  *
195  * This function is not multi-thread safe. The caller must make sure only one
196  * thread makes the call.
197  */
198 void
smb_vop_fini(void)199 smb_vop_fini(void)
200 {
201 	if (!smb_vop_initialized)
202 		return;
203 
204 	lm_free_sysidt(smb_ct.cc_sysid);
205 	smb_ct.cc_pid = IGN_PID;
206 	smb_ct.cc_sysid = LM_NOSYSID;
207 	smb_vop_initialized = B_FALSE;
208 }
209 
210 /*
211  * The smb_ct will be used primarily for range locking.
212  * Since the CIFS server is mapping its locks to POSIX locks,
213  * only one pid is used for operations originating from the
214  * CIFS server (to represent CIFS in the VOP_FRLOCK routines).
215  */
216 int
smb_vop_open(vnode_t ** vpp,int mode,cred_t * cred)217 smb_vop_open(vnode_t **vpp, int mode, cred_t *cred)
218 {
219 	return (VOP_OPEN(vpp, mode, cred, &smb_ct));
220 }
221 
222 void
smb_vop_close(vnode_t * vp,int mode,cred_t * cred)223 smb_vop_close(vnode_t *vp, int mode, cred_t *cred)
224 {
225 	(void) VOP_CLOSE(vp, mode, 1, (offset_t)0, cred, &smb_ct);
226 }
227 
228 int
smb_vop_other_opens(vnode_t * vp,int mode)229 smb_vop_other_opens(vnode_t *vp, int mode)
230 {
231 	return (((mode & FWRITE) && vn_has_other_opens(vp, V_WRITE)) ||
232 	    (((mode & FWRITE) == 0) && vn_is_opened(vp, V_WRITE)) ||
233 	    ((mode & FREAD) && vn_has_other_opens(vp, V_READ)) ||
234 	    (((mode & FREAD) == 0) && vn_is_opened(vp, V_READ)) ||
235 	    vn_is_mapped(vp, V_RDORWR));
236 }
237 
238 /*
239  * The smb_vop_* functions have minimal knowledge of CIFS semantics and
240  * serve as an interface to the VFS layer.
241  *
242  * Only smb_fsop_* layer functions should call smb_vop_* layer functions.
243  * (Higher-level CIFS service code should never skip the smb_fsop_* layer
244  * to call smb_vop_* layer functions directly.)
245  */
246 
247 /*
248  * XXX - Extended attributes support in the file system assumed.
249  * This is needed for full NT Streams functionality.
250  */
251 
252 int
smb_vop_read(vnode_t * vp,uio_t * uiop,cred_t * cr)253 smb_vop_read(vnode_t *vp, uio_t *uiop, cred_t *cr)
254 {
255 	int error;
256 
257 	(void) VOP_RWLOCK(vp, V_WRITELOCK_FALSE, &smb_ct);
258 	error = VOP_READ(vp, uiop, 0, cr, &smb_ct);
259 	VOP_RWUNLOCK(vp, V_WRITELOCK_FALSE, &smb_ct);
260 	return (error);
261 }
262 
263 int
smb_vop_write(vnode_t * vp,uio_t * uiop,int ioflag,uint32_t * lcount,cred_t * cr)264 smb_vop_write(vnode_t *vp, uio_t *uiop, int ioflag, uint32_t *lcount,
265     cred_t *cr)
266 {
267 	int error;
268 
269 	*lcount = uiop->uio_resid;
270 
271 	uiop->uio_llimit = MAXOFFSET_T;
272 
273 	(void) VOP_RWLOCK(vp, V_WRITELOCK_TRUE, &smb_ct);
274 	error = VOP_WRITE(vp, uiop, ioflag, cr, &smb_ct);
275 	VOP_RWUNLOCK(vp, V_WRITELOCK_TRUE, &smb_ct);
276 
277 	*lcount -= uiop->uio_resid;
278 
279 	return (error);
280 }
281 
282 /*
283  * smb_vop_getattr()
284  *
285  * smb_fsop_getattr()/smb_vop_getattr() should always be called from the CIFS
286  * service (instead of calling VOP_GETATTR directly) to retrieve attributes
287  * due to special processing needed for streams files.
288  *
289  * All attributes are retrieved.
290  *
291  * When vp denotes a named stream, then unnamed_vp should be passed in (denoting
292  * the corresponding unnamed stream).
293  * A named stream's attributes (as far as CIFS is concerned) are those of the
294  * unnamed stream (minus the size attribute, and the type), plus  the size of
295  * the named stream, and a type value of VREG.
296  * Although the file system may store other attributes with the named stream,
297  * these should not be used by CIFS for any purpose.
298  *
299  * File systems without VFSFT_XVATTR do not support DOS attributes or create
300  * time (crtime). In this case the mtime is used as the crtime.
301  * Likewise if VOP_GETATTR doesn't return any system attributes the dosattr
302  * is 0 and the mtime is used as the crtime.
303  */
304 int
smb_vop_getattr(vnode_t * vp,vnode_t * unnamed_vp,smb_attr_t * ret_attr,int flags,cred_t * cr)305 smb_vop_getattr(vnode_t *vp, vnode_t *unnamed_vp, smb_attr_t *ret_attr,
306     int flags, cred_t *cr)
307 {
308 	int error;
309 	vnode_t *use_vp;
310 	smb_attr_t tmp_attr;
311 	xvattr_t tmp_xvattr;
312 	xoptattr_t *xoap = NULL;
313 
314 	if (unnamed_vp)
315 		use_vp = unnamed_vp;
316 	else
317 		use_vp = vp;
318 
319 	if (vfs_has_feature(use_vp->v_vfsp, VFSFT_XVATTR)) {
320 		xva_init(&tmp_xvattr);
321 		xoap = xva_getxoptattr(&tmp_xvattr);
322 		ASSERT(xoap);
323 
324 		smb_sa_to_va_mask(ret_attr->sa_mask,
325 		    &tmp_xvattr.xva_vattr.va_mask);
326 
327 		XVA_SET_REQ(&tmp_xvattr, XAT_READONLY);
328 		XVA_SET_REQ(&tmp_xvattr, XAT_HIDDEN);
329 		XVA_SET_REQ(&tmp_xvattr, XAT_SYSTEM);
330 		XVA_SET_REQ(&tmp_xvattr, XAT_ARCHIVE);
331 		XVA_SET_REQ(&tmp_xvattr, XAT_CREATETIME);
332 		XVA_SET_REQ(&tmp_xvattr, XAT_REPARSE);
333 		XVA_SET_REQ(&tmp_xvattr, XAT_OFFLINE);
334 		XVA_SET_REQ(&tmp_xvattr, XAT_SPARSE);
335 
336 		error = VOP_GETATTR(use_vp, &tmp_xvattr.xva_vattr, flags,
337 		    cr, &smb_ct);
338 		if (error != 0)
339 			return (error);
340 
341 		ret_attr->sa_vattr = tmp_xvattr.xva_vattr;
342 		ret_attr->sa_dosattr = 0;
343 
344 		if (tmp_xvattr.xva_vattr.va_mask & AT_XVATTR) {
345 			xoap = xva_getxoptattr(&tmp_xvattr);
346 			ASSERT(xoap);
347 
348 			if ((XVA_ISSET_RTN(&tmp_xvattr, XAT_READONLY)) &&
349 			    (xoap->xoa_readonly)) {
350 				ret_attr->sa_dosattr |= FILE_ATTRIBUTE_READONLY;
351 			}
352 
353 			if ((XVA_ISSET_RTN(&tmp_xvattr, XAT_HIDDEN)) &&
354 			    (xoap->xoa_hidden)) {
355 				ret_attr->sa_dosattr |= FILE_ATTRIBUTE_HIDDEN;
356 			}
357 
358 			if ((XVA_ISSET_RTN(&tmp_xvattr, XAT_SYSTEM)) &&
359 			    (xoap->xoa_system)) {
360 				ret_attr->sa_dosattr |= FILE_ATTRIBUTE_SYSTEM;
361 			}
362 
363 			if ((XVA_ISSET_RTN(&tmp_xvattr, XAT_ARCHIVE)) &&
364 			    (xoap->xoa_archive)) {
365 				ret_attr->sa_dosattr |= FILE_ATTRIBUTE_ARCHIVE;
366 			}
367 
368 			if ((XVA_ISSET_RTN(&tmp_xvattr, XAT_REPARSE)) &&
369 			    (xoap->xoa_reparse)) {
370 				ret_attr->sa_dosattr |=
371 				    FILE_ATTRIBUTE_REPARSE_POINT;
372 			}
373 
374 			if ((XVA_ISSET_RTN(&tmp_xvattr, XAT_OFFLINE)) &&
375 			    (xoap->xoa_offline)) {
376 				ret_attr->sa_dosattr |= FILE_ATTRIBUTE_OFFLINE;
377 			}
378 
379 			if ((XVA_ISSET_RTN(&tmp_xvattr, XAT_SPARSE)) &&
380 			    (xoap->xoa_sparse)) {
381 				ret_attr->sa_dosattr |=
382 				    FILE_ATTRIBUTE_SPARSE_FILE;
383 			}
384 
385 			ret_attr->sa_crtime = xoap->xoa_createtime;
386 		} else {
387 			ret_attr->sa_crtime = ret_attr->sa_vattr.va_mtime;
388 		}
389 	} else {
390 		/*
391 		 * Support for file systems without VFSFT_XVATTR
392 		 */
393 		smb_sa_to_va_mask(ret_attr->sa_mask,
394 		    &ret_attr->sa_vattr.va_mask);
395 
396 		error = VOP_GETATTR(use_vp, &ret_attr->sa_vattr,
397 		    flags, cr, &smb_ct);
398 		if (error != 0)
399 			return (error);
400 
401 		ret_attr->sa_dosattr = 0;
402 		ret_attr->sa_crtime = ret_attr->sa_vattr.va_mtime;
403 	}
404 
405 	if (unnamed_vp) {
406 		ret_attr->sa_vattr.va_type = VREG;
407 
408 		if (ret_attr->sa_mask & (SMB_AT_SIZE | SMB_AT_NBLOCKS)) {
409 			tmp_attr.sa_vattr.va_mask = AT_SIZE | AT_NBLOCKS;
410 
411 			error = VOP_GETATTR(vp, &tmp_attr.sa_vattr,
412 			    flags, cr, &smb_ct);
413 			if (error != 0)
414 				return (error);
415 
416 			ret_attr->sa_vattr.va_size = tmp_attr.sa_vattr.va_size;
417 			ret_attr->sa_vattr.va_nblocks =
418 			    tmp_attr.sa_vattr.va_nblocks;
419 		}
420 	}
421 
422 	if (ret_attr->sa_vattr.va_type == VDIR)
423 		ret_attr->sa_dosattr |= FILE_ATTRIBUTE_DIRECTORY;
424 
425 	return (error);
426 }
427 
428 /*
429  * smb_vop_setattr()
430  *
431  * smb_fsop_setattr()/smb_vop_setattr() should always be used instead of
432  * VOP_SETATTR() when calling from the CIFS service, due to special processing
433  * for streams files.
434  *
435  * Streams have a size but otherwise do not have separate attributes from
436  * the (unnamed stream) file, i.e., the security and ownership of the file
437  * applies to the stream.  In contrast, extended attribute files, which are
438  * used to implement streams, are independent objects with their own
439  * attributes.
440  *
441  * For compatibility with streams, we set the size on the extended attribute
442  * file and apply other attributes to the (unnamed stream) file.  The one
443  * exception is that the UID and GID can be set on the stream by passing a
444  * NULL unnamed_vp, which allows callers to synchronize stream ownership
445  * with the (unnamed stream) file.
446  */
447 int
smb_vop_setattr(vnode_t * vp,vnode_t * unnamed_vp,smb_attr_t * attr,int flags,cred_t * cr)448 smb_vop_setattr(vnode_t *vp, vnode_t *unnamed_vp, smb_attr_t *attr,
449     int flags, cred_t *cr)
450 {
451 	int error = 0;
452 	int at_size = 0;
453 	vnode_t *use_vp;
454 	xvattr_t xvattr;
455 	vattr_t *vap;
456 
457 	if (attr->sa_mask & SMB_AT_DOSATTR) {
458 		attr->sa_dosattr &=
459 		    (FILE_ATTRIBUTE_ARCHIVE | FILE_ATTRIBUTE_READONLY |
460 		    FILE_ATTRIBUTE_HIDDEN | FILE_ATTRIBUTE_SYSTEM |
461 		    FILE_ATTRIBUTE_OFFLINE | FILE_ATTRIBUTE_SPARSE_FILE);
462 	}
463 
464 	if (unnamed_vp) {
465 		use_vp = unnamed_vp;
466 		if (attr->sa_mask & SMB_AT_SIZE) {
467 			at_size = 1;
468 			attr->sa_mask &= ~SMB_AT_SIZE;
469 		}
470 	} else {
471 		use_vp = vp;
472 	}
473 
474 	/*
475 	 * The caller should not be setting sa_vattr.va_mask,
476 	 * but rather sa_mask.
477 	 */
478 
479 	attr->sa_vattr.va_mask = 0;
480 
481 	if (vfs_has_feature(use_vp->v_vfsp, VFSFT_XVATTR)) {
482 		smb_vop_setup_xvattr(attr, &xvattr);
483 		vap = &xvattr.xva_vattr;
484 	} else {
485 		smb_sa_to_va_mask(attr->sa_mask,
486 		    &attr->sa_vattr.va_mask);
487 		vap = &attr->sa_vattr;
488 	}
489 
490 	if ((error = VOP_SETATTR(use_vp, vap, flags, cr, &smb_ct)) != 0)
491 		return (error);
492 
493 	if (at_size) {
494 		attr->sa_vattr.va_mask = AT_SIZE;
495 		error = VOP_SETATTR(vp, &attr->sa_vattr, flags,
496 		    zone_kcred(), &smb_ct);
497 	}
498 
499 	return (error);
500 }
501 
502 /*
503  * smb_vop_access
504  *
505  * This is a wrapper round VOP_ACCESS. VOP_ACCESS checks the given mode
506  * against file's ACL or Unix permissions. CIFS on the other hand needs to
507  * know if the requested operation can succeed for the given object, this
508  * requires more checks in case of DELETE bit since permissions on the parent
509  * directory are important as well. Based on Windows rules if parent's ACL
510  * grant FILE_DELETE_CHILD a file can be delete regardless of the file's
511  * permissions.
512  */
513 int
smb_vop_access(vnode_t * vp,int mode,int flags,vnode_t * dir_vp,cred_t * cr)514 smb_vop_access(vnode_t *vp, int mode, int flags, vnode_t *dir_vp, cred_t *cr)
515 {
516 	int error = 0;
517 
518 	if (mode == 0)
519 		return (0);
520 
521 	if ((flags == V_ACE_MASK) && (mode & ACE_DELETE)) {
522 		if (dir_vp) {
523 			error = VOP_ACCESS(dir_vp, ACE_DELETE_CHILD, flags,
524 			    cr, NULL);
525 
526 			if (error == 0)
527 				mode &= ~ACE_DELETE;
528 		}
529 	}
530 
531 	if (mode) {
532 		error = VOP_ACCESS(vp, mode, flags, cr, NULL);
533 	}
534 
535 	return (error);
536 }
537 
538 /*
539  * smb_vop_lookup
540  *
541  * dvp:		directory vnode (in)
542  * name:	name of file to be looked up (in)
543  * vpp:		looked-up vnode (out)
544  * od_name:	on-disk name of file (out).
545  *		This parameter is optional.  If a pointer is passed in, it
546  * 		must be allocated with MAXNAMELEN bytes
547  * rootvp:	vnode of the tree root (in)
548  *		This parameter is always passed in non-NULL except at the time
549  *		of share set up.
550  * direntflags:	dirent flags returned from VOP_LOOKUP
551  */
552 int
smb_vop_lookup(vnode_t * dvp,char * name,vnode_t ** vpp,char * od_name,int flags,int * direntflags,vnode_t * rootvp,smb_attr_t * attr,cred_t * cr)553 smb_vop_lookup(
554     vnode_t		*dvp,
555     char		*name,
556     vnode_t		**vpp,
557     char		*od_name,
558     int			flags,
559     int			*direntflags,
560     vnode_t		*rootvp,
561     smb_attr_t		*attr,
562     cred_t		*cr)
563 {
564 	int error = 0;
565 	int option_flags = 0;
566 	pathname_t rpn;
567 	char *np = name;
568 	char namebuf[MAXNAMELEN];
569 
570 	if (*name == '\0')
571 		return (EINVAL);
572 
573 	ASSERT(vpp);
574 	*vpp = NULL;
575 	*direntflags = 0;
576 
577 	if ((name[0] == '.') && (name[1] == '.') && (name[2] == 0)) {
578 		if (rootvp && (dvp == rootvp)) {
579 			VN_HOLD(dvp);
580 			*vpp = dvp;
581 			return (0);
582 		}
583 
584 		if (dvp->v_flag & VROOT) {
585 			vfs_t *vfsp;
586 			vnode_t *cvp = dvp;
587 
588 			/*
589 			 * Set dvp and check for races with forced unmount
590 			 * (see lookuppnvp())
591 			 */
592 
593 			vfsp = cvp->v_vfsp;
594 			vfs_rlock_wait(vfsp);
595 			if (((dvp = cvp->v_vfsp->vfs_vnodecovered) == NULL) ||
596 			    (cvp->v_vfsp->vfs_flag & VFS_UNMOUNTED)) {
597 				vfs_unlock(vfsp);
598 				return (EIO);
599 			}
600 			vfs_unlock(vfsp);
601 		}
602 	}
603 
604 	if (flags & SMB_IGNORE_CASE)
605 		option_flags = FIGNORECASE;
606 
607 	if (flags & SMB_CATIA)
608 		np = smb_vop_catia_v5tov4(name, namebuf, sizeof (namebuf));
609 
610 	pn_alloc(&rpn);
611 
612 	error = VOP_LOOKUP(dvp, np, vpp, NULL, option_flags, NULL, cr,
613 	    &smb_ct, direntflags, &rpn);
614 
615 	if (error == 0) {
616 		if (od_name) {
617 			bzero(od_name, MAXNAMELEN);
618 			np = (option_flags == FIGNORECASE) ? rpn.pn_buf : name;
619 
620 			if (flags & SMB_CATIA)
621 				smb_vop_catia_v4tov5(np, od_name, MAXNAMELEN);
622 			else
623 				(void) strlcpy(od_name, np, MAXNAMELEN);
624 		}
625 
626 		if (attr != NULL) {
627 			attr->sa_mask = SMB_AT_ALL;
628 			(void) smb_vop_getattr(*vpp, NULL, attr, 0,
629 			    zone_kcred());
630 		}
631 	}
632 
633 	pn_free(&rpn);
634 	return (error);
635 }
636 
637 int
smb_vop_create(vnode_t * dvp,char * name,smb_attr_t * attr,vnode_t ** vpp,int flags,cred_t * cr,vsecattr_t * vsap)638 smb_vop_create(vnode_t *dvp, char *name, smb_attr_t *attr, vnode_t **vpp,
639     int flags, cred_t *cr, vsecattr_t *vsap)
640 {
641 	int error;
642 	int option_flags = 0;
643 	xvattr_t xvattr;
644 	vattr_t *vap;
645 	char *np = name;
646 	char namebuf[MAXNAMELEN];
647 
648 	if (flags & SMB_IGNORE_CASE)
649 		option_flags = FIGNORECASE;
650 
651 	attr->sa_vattr.va_mask = 0;
652 
653 	if (vfs_has_feature(dvp->v_vfsp, VFSFT_XVATTR)) {
654 		smb_vop_setup_xvattr(attr, &xvattr);
655 		vap = &xvattr.xva_vattr;
656 	} else {
657 		smb_sa_to_va_mask(attr->sa_mask, &attr->sa_vattr.va_mask);
658 		vap = &attr->sa_vattr;
659 	}
660 
661 	if (flags & SMB_CATIA) {
662 		np = smb_vop_catia_v5tov4(name, namebuf, sizeof (namebuf));
663 		if (strchr(np, '/') != NULL)
664 			return (EILSEQ);
665 	}
666 
667 	error = VOP_CREATE(dvp, np, vap, EXCL, attr->sa_vattr.va_mode,
668 	    vpp, cr, option_flags, &smb_ct, vsap);
669 
670 	return (error);
671 }
672 
673 int
smb_vop_remove(vnode_t * dvp,char * name,int flags,cred_t * cr)674 smb_vop_remove(vnode_t *dvp, char *name, int flags, cred_t *cr)
675 {
676 	int error;
677 	int option_flags = 0;
678 	char *np = name;
679 	char namebuf[MAXNAMELEN];
680 
681 	if (flags & SMB_IGNORE_CASE)
682 		option_flags = FIGNORECASE;
683 
684 	if (flags & SMB_CATIA)
685 		np = smb_vop_catia_v5tov4(name, namebuf, sizeof (namebuf));
686 
687 	error = VOP_REMOVE(dvp, np, cr, &smb_ct, option_flags);
688 
689 	return (error);
690 }
691 
692 /*
693  * smb_vop_link(target-dir-vp, source-file-vp, target-name)
694  *
695  * Create a link - same tree (identical TID) only.
696  */
697 int
smb_vop_link(vnode_t * to_dvp,vnode_t * from_vp,char * to_name,int flags,cred_t * cr)698 smb_vop_link(vnode_t *to_dvp, vnode_t *from_vp, char *to_name,
699     int flags, cred_t *cr)
700 {
701 	int option_flags = 0;
702 	char *np, *buf;
703 	int rc;
704 
705 	if (flags & SMB_IGNORE_CASE)
706 		option_flags = FIGNORECASE;
707 
708 	if (flags & SMB_CATIA) {
709 		buf = kmem_zalloc(MAXNAMELEN, KM_SLEEP);
710 		np = smb_vop_catia_v5tov4(to_name, buf, MAXNAMELEN);
711 		if (strchr(np, '/') != NULL) {
712 			kmem_free(buf, MAXNAMELEN);
713 			return (EILSEQ);
714 		}
715 
716 		rc = VOP_LINK(to_dvp, from_vp, np, cr, &smb_ct, option_flags);
717 		kmem_free(buf, MAXNAMELEN);
718 		return (rc);
719 	}
720 
721 	rc = VOP_LINK(to_dvp, from_vp, to_name, cr, &smb_ct, option_flags);
722 	return (rc);
723 }
724 
725 /*
726  * smb_vop_rename()
727  *
728  * The rename is for files in the same tree (identical TID) only.
729  */
730 int
smb_vop_rename(vnode_t * from_dvp,char * from_name,vnode_t * to_dvp,char * to_name,int flags,cred_t * cr)731 smb_vop_rename(vnode_t *from_dvp, char *from_name, vnode_t *to_dvp,
732     char *to_name, int flags, cred_t *cr)
733 {
734 	int error;
735 	int option_flags = 0;
736 	char *from, *to, *fbuf, *tbuf;
737 
738 	if (flags & SMB_IGNORE_CASE)
739 		option_flags = FIGNORECASE;
740 
741 	if (flags & SMB_CATIA) {
742 		tbuf = kmem_zalloc(MAXNAMELEN, KM_SLEEP);
743 		to = smb_vop_catia_v5tov4(to_name, tbuf, MAXNAMELEN);
744 		if (strchr(to, '/') != NULL) {
745 			kmem_free(tbuf, MAXNAMELEN);
746 			return (EILSEQ);
747 		}
748 
749 		fbuf = kmem_zalloc(MAXNAMELEN, KM_SLEEP);
750 		from = smb_vop_catia_v5tov4(from_name, fbuf, MAXNAMELEN);
751 
752 		error = VOP_RENAME(from_dvp, from, to_dvp, to, cr,
753 		    &smb_ct, option_flags);
754 
755 		kmem_free(tbuf, MAXNAMELEN);
756 		kmem_free(fbuf, MAXNAMELEN);
757 		return (error);
758 	}
759 
760 	error = VOP_RENAME(from_dvp, from_name, to_dvp, to_name, cr,
761 	    &smb_ct, option_flags);
762 
763 	return (error);
764 }
765 
766 int
smb_vop_mkdir(vnode_t * dvp,char * name,smb_attr_t * attr,vnode_t ** vpp,int flags,cred_t * cr,vsecattr_t * vsap)767 smb_vop_mkdir(vnode_t *dvp, char *name, smb_attr_t *attr, vnode_t **vpp,
768     int flags, cred_t *cr, vsecattr_t *vsap)
769 {
770 	int error;
771 	int option_flags = 0;
772 	xvattr_t xvattr;
773 	vattr_t *vap;
774 	char *np = name;
775 	char namebuf[MAXNAMELEN];
776 
777 	if (flags & SMB_IGNORE_CASE)
778 		option_flags = FIGNORECASE;
779 
780 	attr->sa_vattr.va_mask = 0;
781 
782 	if (vfs_has_feature(dvp->v_vfsp, VFSFT_XVATTR)) {
783 		smb_vop_setup_xvattr(attr, &xvattr);
784 		vap = &xvattr.xva_vattr;
785 	} else {
786 		smb_sa_to_va_mask(attr->sa_mask, &attr->sa_vattr.va_mask);
787 		vap = &attr->sa_vattr;
788 	}
789 
790 	if (flags & SMB_CATIA) {
791 		np = smb_vop_catia_v5tov4(name, namebuf, sizeof (namebuf));
792 		if (strchr(np, '/') != NULL)
793 			return (EILSEQ);
794 	}
795 
796 	error = VOP_MKDIR(dvp, np, vap, vpp, cr, &smb_ct, option_flags, vsap);
797 
798 	return (error);
799 }
800 
801 /*
802  * smb_vop_rmdir()
803  *
804  * Only simple rmdir supported, consistent with NT semantics
805  * (can only remove an empty directory).
806  *
807  * The third argument to VOP_RMDIR  is the current directory of
808  * the process.  It allows rmdir wants to EINVAL if one tries to
809  * remove ".".  Since SMB servers do not know what their clients'
810  * current directories are, we fake it by supplying a vnode known
811  * to exist and illegal to remove (rootdir).
812  */
813 int
smb_vop_rmdir(vnode_t * dvp,char * name,int flags,cred_t * cr)814 smb_vop_rmdir(vnode_t *dvp, char *name, int flags, cred_t *cr)
815 {
816 	int error;
817 	int option_flags = 0;
818 	char *np = name;
819 	char namebuf[MAXNAMELEN];
820 
821 	if (flags & SMB_IGNORE_CASE)
822 		option_flags = FIGNORECASE;
823 
824 	if (flags & SMB_CATIA)
825 		np = smb_vop_catia_v5tov4(name, namebuf, sizeof (namebuf));
826 
827 	error = VOP_RMDIR(dvp, np, rootdir, cr, &smb_ct, option_flags);
828 	return (error);
829 }
830 
831 int
smb_vop_commit(vnode_t * vp,cred_t * cr)832 smb_vop_commit(vnode_t *vp, cred_t *cr)
833 {
834 	return (VOP_FSYNC(vp, 1, cr, &smb_ct));
835 }
836 
837 /*
838  * Some code in smb_node.c needs to know which DOS attributes
839  * we can actually store.  Let's define a mask here of all the
840  * DOS attribute flags supported by the following function.
841  */
842 const uint32_t
843 smb_vop_dosattr_settable =
844 	FILE_ATTRIBUTE_ARCHIVE |
845 	FILE_ATTRIBUTE_SYSTEM |
846 	FILE_ATTRIBUTE_HIDDEN |
847 	FILE_ATTRIBUTE_READONLY |
848 	FILE_ATTRIBUTE_OFFLINE |
849 	FILE_ATTRIBUTE_SPARSE_FILE;
850 
851 static void
smb_vop_setup_xvattr(smb_attr_t * smb_attr,xvattr_t * xvattr)852 smb_vop_setup_xvattr(smb_attr_t *smb_attr, xvattr_t *xvattr)
853 {
854 	xoptattr_t *xoap = NULL;
855 	uint_t xva_mask;
856 
857 	/*
858 	 * Initialize xvattr, including bzero
859 	 */
860 	xva_init(xvattr);
861 	xoap = xva_getxoptattr(xvattr);
862 
863 	ASSERT(xoap);
864 
865 	/*
866 	 * Copy caller-specified classic attributes to xvattr.
867 	 * First save xvattr's mask (set in xva_init()), which
868 	 * contains AT_XVATTR.  This is |'d in later if needed.
869 	 */
870 
871 	xva_mask = xvattr->xva_vattr.va_mask;
872 	xvattr->xva_vattr = smb_attr->sa_vattr;
873 
874 	smb_sa_to_va_mask(smb_attr->sa_mask, &xvattr->xva_vattr.va_mask);
875 
876 	/*
877 	 * Do not set ctime (only the file system can do it)
878 	 */
879 
880 	xvattr->xva_vattr.va_mask &= ~AT_CTIME;
881 
882 	if (smb_attr->sa_mask & SMB_AT_DOSATTR) {
883 
884 		/*
885 		 * "|" in the original xva_mask, which contains
886 		 * AT_XVATTR
887 		 */
888 
889 		xvattr->xva_vattr.va_mask |= xva_mask;
890 
891 		XVA_SET_REQ(xvattr, XAT_ARCHIVE);
892 		XVA_SET_REQ(xvattr, XAT_SYSTEM);
893 		XVA_SET_REQ(xvattr, XAT_READONLY);
894 		XVA_SET_REQ(xvattr, XAT_HIDDEN);
895 		XVA_SET_REQ(xvattr, XAT_OFFLINE);
896 		XVA_SET_REQ(xvattr, XAT_SPARSE);
897 
898 		/*
899 		 * smb_attr->sa_dosattr: If a given bit is not set,
900 		 * that indicates that the corresponding field needs
901 		 * to be updated with a "0" value.  This is done
902 		 * implicitly as the xoap->xoa_* fields were bzero'd.
903 		 */
904 
905 		if (smb_attr->sa_dosattr & FILE_ATTRIBUTE_ARCHIVE)
906 			xoap->xoa_archive = 1;
907 
908 		if (smb_attr->sa_dosattr & FILE_ATTRIBUTE_SYSTEM)
909 			xoap->xoa_system = 1;
910 
911 		if (smb_attr->sa_dosattr & FILE_ATTRIBUTE_READONLY)
912 			xoap->xoa_readonly = 1;
913 
914 		if (smb_attr->sa_dosattr & FILE_ATTRIBUTE_HIDDEN)
915 			xoap->xoa_hidden = 1;
916 
917 		if (smb_attr->sa_dosattr & FILE_ATTRIBUTE_OFFLINE)
918 			xoap->xoa_offline = 1;
919 
920 		if (smb_attr->sa_dosattr & FILE_ATTRIBUTE_SPARSE_FILE)
921 			xoap->xoa_sparse = 1;
922 	}
923 
924 	if (smb_attr->sa_mask & SMB_AT_CRTIME) {
925 		/*
926 		 * "|" in the original xva_mask, which contains
927 		 * AT_XVATTR
928 		 */
929 
930 		xvattr->xva_vattr.va_mask |= xva_mask;
931 		XVA_SET_REQ(xvattr, XAT_CREATETIME);
932 		xoap->xoa_createtime = smb_attr->sa_crtime;
933 	}
934 }
935 
936 /*
937  * smb_vop_readdir()
938  *
939  * Collects an SMB_MINLEN_RDDIR_BUF "page" of directory entries.
940  * The directory entries are returned in an fs-independent format by the
941  * underlying file system.  That is, the "page" of information returned is
942  * not literally stored on-disk in the format returned.
943  * If the file system supports extended directory entries (has features
944  * VFSFT_DIRENTFLAGS), set V_RDDIR_ENTFLAGS to cause the buffer to be
945  * filled with edirent_t structures, instead of dirent64_t structures.
946  * If the file system supports access based enumeration (abe), set
947  * V_RDDIR_ACCFILTER to filter directory entries based on user cred.
948  */
949 int
smb_vop_readdir(vnode_t * vp,uint32_t offset,void * buf,int * count,int * eof,uint32_t rddir_flag,cred_t * cr)950 smb_vop_readdir(vnode_t *vp, uint32_t offset,
951     void *buf, int *count, int *eof, uint32_t rddir_flag, cred_t *cr)
952 {
953 	int error = 0;
954 	int flags = 0;
955 	int rdirent_size;
956 	struct uio auio;
957 	struct iovec aiov;
958 
959 	if (vp->v_type != VDIR)
960 		return (ENOTDIR);
961 
962 	if (vfs_has_feature(vp->v_vfsp, VFSFT_DIRENTFLAGS)) {
963 		flags |= V_RDDIR_ENTFLAGS;
964 		rdirent_size = sizeof (edirent_t);
965 	} else {
966 		rdirent_size = sizeof (dirent64_t);
967 	}
968 
969 	if (*count < rdirent_size)
970 		return (EINVAL);
971 
972 	if (rddir_flag & SMB_ABE)
973 		flags |= V_RDDIR_ACCFILTER;
974 
975 	aiov.iov_base = buf;
976 	aiov.iov_len = *count;
977 	auio.uio_iov = &aiov;
978 	auio.uio_iovcnt = 1;
979 	auio.uio_loffset = (uint64_t)offset;
980 	auio.uio_segflg = UIO_SYSSPACE;
981 	auio.uio_extflg = UIO_COPY_DEFAULT;
982 	auio.uio_resid = *count;
983 	auio.uio_fmode = 0;
984 
985 	(void) VOP_RWLOCK(vp, V_WRITELOCK_FALSE, &smb_ct);
986 	error = VOP_READDIR(vp, &auio, cr, eof, &smb_ct, flags);
987 	VOP_RWUNLOCK(vp, V_WRITELOCK_FALSE, &smb_ct);
988 
989 	if (error == 0)
990 		*count = *count - auio.uio_resid;
991 
992 	return (error);
993 }
994 
995 /*
996  * smb_sa_to_va_mask
997  *
998  * Set va_mask by running through the SMB_AT_* #define's and
999  * setting those bits that correspond to the SMB_AT_* bits
1000  * set in sa_mask.
1001  */
1002 void
smb_sa_to_va_mask(uint_t sa_mask,uint_t * va_maskp)1003 smb_sa_to_va_mask(uint_t sa_mask, uint_t *va_maskp)
1004 {
1005 	int i;
1006 	uint_t smask;
1007 
1008 	smask = (sa_mask);
1009 	for (i = SMB_AT_TYPE; (i < SMB_AT_MAX) && (smask != 0); ++i) {
1010 		if (smask & 1)
1011 			*(va_maskp) |= smb_attrmap[i];
1012 
1013 		smask >>= 1;
1014 	}
1015 }
1016 
1017 /*
1018  * smb_vop_stream_lookup()
1019  *
1020  * The name returned in od_name is the on-disk name of the stream with the
1021  * SMB_STREAM_PREFIX stripped off.  od_name should be allocated to MAXNAMELEN
1022  * by the caller.
1023  */
1024 int
smb_vop_stream_lookup(vnode_t * fvp,char * stream_name,vnode_t ** vpp,char * od_name,vnode_t ** xattrdirvpp,int flags,vnode_t * rootvp,cred_t * cr)1025 smb_vop_stream_lookup(
1026     vnode_t		*fvp,
1027     char		*stream_name,
1028     vnode_t		**vpp,
1029     char		*od_name,
1030     vnode_t		**xattrdirvpp,
1031     int			flags,
1032     vnode_t		*rootvp,
1033     cred_t		*cr)
1034 {
1035 	char *solaris_stream_name;
1036 	char *name;
1037 	int error, tmpflgs;
1038 
1039 	if ((error = smb_vop_lookup_xattrdir(fvp, xattrdirvpp,
1040 	    LOOKUP_XATTR | CREATE_XATTR_DIR, cr)) != 0)
1041 		return (error);
1042 
1043 	/*
1044 	 * Prepend SMB_STREAM_PREFIX to stream name
1045 	 */
1046 
1047 	solaris_stream_name = kmem_alloc(MAXNAMELEN, KM_SLEEP);
1048 	(void) snprintf(solaris_stream_name, MAXNAMELEN,
1049 	    "%s%s", SMB_STREAM_PREFIX, stream_name);
1050 
1051 	/*
1052 	 * "name" will hold the on-disk name returned from smb_vop_lookup
1053 	 * for the stream, including the SMB_STREAM_PREFIX.
1054 	 */
1055 
1056 	name = kmem_zalloc(MAXNAMELEN, KM_SLEEP);
1057 
1058 	if ((error = smb_vop_lookup(*xattrdirvpp, solaris_stream_name, vpp,
1059 	    name, flags, &tmpflgs, rootvp, NULL, cr)) != 0) {
1060 		VN_RELE(*xattrdirvpp);
1061 	} else {
1062 		(void) strlcpy(od_name, &(name[SMB_STREAM_PREFIX_LEN]),
1063 		    MAXNAMELEN);
1064 	}
1065 
1066 	kmem_free(solaris_stream_name, MAXNAMELEN);
1067 	kmem_free(name, MAXNAMELEN);
1068 
1069 	return (error);
1070 }
1071 
1072 int
smb_vop_stream_create(vnode_t * fvp,char * stream_name,smb_attr_t * attr,vnode_t ** vpp,vnode_t ** xattrdirvpp,int flags,cred_t * cr)1073 smb_vop_stream_create(vnode_t *fvp, char *stream_name, smb_attr_t *attr,
1074     vnode_t **vpp, vnode_t **xattrdirvpp, int flags, cred_t *cr)
1075 {
1076 	char *solaris_stream_name;
1077 	int error;
1078 
1079 	if ((error = smb_vop_lookup_xattrdir(fvp, xattrdirvpp,
1080 	    LOOKUP_XATTR | CREATE_XATTR_DIR, cr)) != 0)
1081 		return (error);
1082 
1083 	/*
1084 	 * Prepend SMB_STREAM_PREFIX to stream name
1085 	 */
1086 
1087 	solaris_stream_name = kmem_alloc(MAXNAMELEN, KM_SLEEP);
1088 	(void) snprintf(solaris_stream_name, MAXNAMELEN,
1089 	    "%s%s", SMB_STREAM_PREFIX, stream_name);
1090 
1091 	if ((error = smb_vop_create(*xattrdirvpp, solaris_stream_name, attr,
1092 	    vpp, flags, cr, NULL)) != 0)
1093 		VN_RELE(*xattrdirvpp);
1094 
1095 	kmem_free(solaris_stream_name, MAXNAMELEN);
1096 
1097 	return (error);
1098 }
1099 
1100 int
smb_vop_stream_remove(vnode_t * vp,char * stream_name,int flags,cred_t * cr)1101 smb_vop_stream_remove(vnode_t *vp, char *stream_name, int flags, cred_t *cr)
1102 {
1103 	char *solaris_stream_name;
1104 	vnode_t *xattrdirvp;
1105 	int error;
1106 
1107 	error = smb_vop_lookup_xattrdir(vp, &xattrdirvp, LOOKUP_XATTR, cr);
1108 	if (error != 0)
1109 		return (error);
1110 
1111 	/*
1112 	 * Prepend SMB_STREAM_PREFIX to stream name
1113 	 */
1114 
1115 	solaris_stream_name = kmem_alloc(MAXNAMELEN, KM_SLEEP);
1116 	(void) snprintf(solaris_stream_name, MAXNAMELEN,
1117 	    "%s%s", SMB_STREAM_PREFIX, stream_name);
1118 
1119 	/* XXX might have to use kcred */
1120 	error = smb_vop_remove(xattrdirvp, solaris_stream_name, flags, cr);
1121 
1122 	kmem_free(solaris_stream_name, MAXNAMELEN);
1123 	VN_RELE(xattrdirvp);
1124 
1125 	return (error);
1126 }
1127 
1128 int
smb_vop_lookup_xattrdir(vnode_t * fvp,vnode_t ** xattrdirvpp,int flags,cred_t * cr)1129 smb_vop_lookup_xattrdir(vnode_t *fvp, vnode_t **xattrdirvpp, int flags,
1130     cred_t *cr)
1131 {
1132 	int error;
1133 
1134 	error = VOP_LOOKUP(fvp, "", xattrdirvpp, NULL, flags, NULL, cr,
1135 	    &smb_ct, NULL, NULL);
1136 	return (error);
1137 }
1138 
1139 /*
1140  * smb_vop_traverse_check()
1141  *
1142  * This function checks to see if the passed-in vnode has a file system
1143  * mounted on it.  If it does, the mount point is "traversed" and the
1144  * vnode for the root of the file system is returned.
1145  */
1146 int
smb_vop_traverse_check(vnode_t ** vpp)1147 smb_vop_traverse_check(vnode_t **vpp)
1148 {
1149 	int error;
1150 
1151 	if (vn_mountedvfs(*vpp) == 0)
1152 		return (0);
1153 
1154 	/*
1155 	 * traverse() may return a different held vnode, even in the error case.
1156 	 * If it returns a different vnode, it will have released the original.
1157 	 */
1158 
1159 	error = traverse(vpp);
1160 
1161 	return (error);
1162 }
1163 
1164 int /*ARGSUSED*/
smb_vop_statfs(vnode_t * vp,struct statvfs64 * statp,cred_t * cr)1165 smb_vop_statfs(vnode_t *vp, struct statvfs64 *statp, cred_t *cr)
1166 {
1167 	int error;
1168 
1169 	error = VFS_STATVFS(vp->v_vfsp, statp);
1170 
1171 	return (error);
1172 }
1173 
1174 /*
1175  * smb_vop_acl_read
1176  *
1177  * Reads the ACL of the specified file into 'aclp'.
1178  * acl_type is the type of ACL which the filesystem supports.
1179  *
1180  * Caller has to free the allocated memory for aclp by calling
1181  * acl_free().
1182  */
1183 int
smb_vop_acl_read(vnode_t * vp,acl_t ** aclp,int flags,acl_type_t acl_type,cred_t * cr)1184 smb_vop_acl_read(vnode_t *vp, acl_t **aclp, int flags, acl_type_t acl_type,
1185     cred_t *cr)
1186 {
1187 	int error;
1188 	vsecattr_t vsecattr;
1189 
1190 	ASSERT(vp);
1191 	ASSERT(aclp);
1192 
1193 	*aclp = NULL;
1194 	bzero(&vsecattr, sizeof (vsecattr_t));
1195 
1196 	switch (acl_type) {
1197 	case ACLENT_T:
1198 		vsecattr.vsa_mask = VSA_ACL | VSA_ACLCNT | VSA_DFACL |
1199 		    VSA_DFACLCNT;
1200 		break;
1201 
1202 	case ACE_T:
1203 		vsecattr.vsa_mask = VSA_ACE | VSA_ACECNT | VSA_ACE_ACLFLAGS;
1204 		break;
1205 
1206 	default:
1207 		return (EINVAL);
1208 	}
1209 
1210 	if (error = VOP_GETSECATTR(vp, &vsecattr, flags, cr, &smb_ct))
1211 		return (error);
1212 
1213 	*aclp = smb_fsacl_from_vsa(&vsecattr, acl_type);
1214 	if (vp->v_type == VDIR)
1215 		(*aclp)->acl_flags |= ACL_IS_DIR;
1216 
1217 	return (0);
1218 }
1219 
1220 /*
1221  * smb_vop_acl_write
1222  *
1223  * Writes the given ACL in aclp for the specified file.
1224  */
1225 int
smb_vop_acl_write(vnode_t * vp,acl_t * aclp,int flags,cred_t * cr)1226 smb_vop_acl_write(vnode_t *vp, acl_t *aclp, int flags, cred_t *cr)
1227 {
1228 	int error;
1229 	vsecattr_t vsecattr;
1230 	int aclbsize;
1231 
1232 	ASSERT(vp);
1233 	ASSERT(aclp);
1234 
1235 	error = smb_fsacl_to_vsa(aclp, &vsecattr, &aclbsize);
1236 
1237 	if (error == 0) {
1238 		(void) VOP_RWLOCK(vp, V_WRITELOCK_TRUE, &smb_ct);
1239 		error = VOP_SETSECATTR(vp, &vsecattr, flags, cr, &smb_ct);
1240 		VOP_RWUNLOCK(vp, V_WRITELOCK_TRUE, &smb_ct);
1241 	}
1242 
1243 	if (aclbsize && vsecattr.vsa_aclentp)
1244 		kmem_free(vsecattr.vsa_aclentp, aclbsize);
1245 
1246 	return (error);
1247 }
1248 
1249 /*
1250  * smb_vop_acl_type
1251  *
1252  * Determines the ACL type for the given vnode.
1253  * ACLENT_T is a Posix ACL and ACE_T is a ZFS ACL.
1254  */
1255 acl_type_t
smb_vop_acl_type(vnode_t * vp)1256 smb_vop_acl_type(vnode_t *vp)
1257 {
1258 	int error;
1259 	ulong_t whichacl;
1260 
1261 	error = VOP_PATHCONF(vp, _PC_ACL_ENABLED, &whichacl,
1262 	    zone_kcred(), NULL);
1263 	if (error != 0) {
1264 		/*
1265 		 * If we got an error, then the filesystem
1266 		 * likely does not understand the _PC_ACL_ENABLED
1267 		 * pathconf.  In this case, we fall back to trying
1268 		 * POSIX-draft (aka UFS-style) ACLs.
1269 		 */
1270 		whichacl = _ACL_ACLENT_ENABLED;
1271 	}
1272 
1273 	if (!(whichacl & (_ACL_ACE_ENABLED | _ACL_ACLENT_ENABLED))) {
1274 		/*
1275 		 * If the file system supports neither ACE nor
1276 		 * ACLENT ACLs we will fall back to UFS-style ACLs
1277 		 * like we did above if there was an error upon
1278 		 * calling VOP_PATHCONF.
1279 		 *
1280 		 * ACE and ACLENT type ACLs are the only interfaces
1281 		 * supported thus far.  If any other bits are set on
1282 		 * 'whichacl' upon return from VOP_PATHCONF, we will
1283 		 * ignore them.
1284 		 */
1285 		whichacl = _ACL_ACLENT_ENABLED;
1286 	}
1287 
1288 	if (whichacl == _ACL_ACLENT_ENABLED)
1289 		return (ACLENT_T);
1290 
1291 	return (ACE_T);
1292 }
1293 
1294 static const int zfs_perms[] = {
1295 	ACE_READ_DATA, ACE_WRITE_DATA, ACE_APPEND_DATA, ACE_READ_NAMED_ATTRS,
1296 	ACE_WRITE_NAMED_ATTRS, ACE_EXECUTE, ACE_DELETE_CHILD,
1297 	ACE_READ_ATTRIBUTES, ACE_WRITE_ATTRIBUTES, ACE_DELETE, ACE_READ_ACL,
1298 	ACE_WRITE_ACL, ACE_WRITE_OWNER, ACE_SYNCHRONIZE
1299 };
1300 
1301 static const int unix_perms[] = { VREAD, VWRITE, VEXEC };
1302 /*
1303  * smb_vop_eaccess
1304  *
1305  * Returns the effective permission of the given credential for the
1306  * specified object.
1307  *
1308  * This is just a workaround. We need VFS/FS support for this.
1309  */
1310 void
smb_vop_eaccess(vnode_t * vp,int * mode,int flags,vnode_t * dir_vp,cred_t * cr)1311 smb_vop_eaccess(vnode_t *vp, int *mode, int flags, vnode_t *dir_vp, cred_t *cr)
1312 {
1313 	int error, i;
1314 	int pnum;
1315 
1316 	*mode = 0;
1317 
1318 	if (flags == V_ACE_MASK) {
1319 		pnum = sizeof (zfs_perms) / sizeof (int);
1320 
1321 		for (i = 0; i < pnum; i++) {
1322 			error = smb_vop_access(vp, zfs_perms[i], flags,
1323 			    dir_vp, cr);
1324 			if (error == 0)
1325 				*mode |= zfs_perms[i];
1326 		}
1327 	} else {
1328 		pnum = sizeof (unix_perms) / sizeof (int);
1329 
1330 		for (i = 0; i < pnum; i++) {
1331 			error = smb_vop_access(vp, unix_perms[i], flags,
1332 			    dir_vp, cr);
1333 			if (error == 0)
1334 				*mode |= unix_perms[i];
1335 		}
1336 	}
1337 }
1338 
1339 /*
1340  * See comments for smb_fsop_shrlock()
1341  */
1342 int
smb_vop_shrlock(vnode_t * vp,uint32_t uniq_fid,uint32_t desired_access,uint32_t share_access,cred_t * cr)1343 smb_vop_shrlock(vnode_t *vp, uint32_t uniq_fid, uint32_t desired_access,
1344     uint32_t share_access, cred_t *cr)
1345 {
1346 	struct shrlock shr;
1347 	struct shr_locowner shr_own;
1348 	short new_access = 0;
1349 	short deny = 0;
1350 	int flag = 0;
1351 	int cmd;
1352 
1353 	/*
1354 	 * share locking is not supported for non-regular
1355 	 * objects in NBMAND mode.
1356 	 */
1357 	if (nbl_need_check(vp)) {
1358 		if (vp->v_type != VREG)
1359 			return (0);
1360 
1361 		cmd = F_SHARE_NBMAND;
1362 	} else {
1363 		cmd = F_SHARE;
1364 	}
1365 
1366 	if ((desired_access & FILE_DATA_ALL) == 0) {
1367 		/* metadata access only */
1368 		new_access |= F_MDACC;
1369 	} else {
1370 		if (desired_access & (ACE_READ_DATA | ACE_EXECUTE)) {
1371 			new_access |= F_RDACC;
1372 			flag |= FREAD;
1373 		}
1374 
1375 		if (desired_access & (ACE_WRITE_DATA | ACE_APPEND_DATA |
1376 		    ACE_ADD_FILE)) {
1377 			new_access |= F_WRACC;
1378 			flag |= FWRITE;
1379 		}
1380 
1381 		if (SMB_DENY_READ(share_access)) {
1382 			deny |= F_RDDNY;
1383 		}
1384 
1385 		if (SMB_DENY_WRITE(share_access)) {
1386 			deny |= F_WRDNY;
1387 		}
1388 
1389 		if (cmd == F_SHARE_NBMAND) {
1390 			if (desired_access & ACE_DELETE)
1391 				new_access |= F_RMACC;
1392 
1393 			if (SMB_DENY_DELETE(share_access)) {
1394 				deny |= F_RMDNY;
1395 			}
1396 		}
1397 	}
1398 
1399 	shr.s_access = new_access;
1400 	shr.s_deny = deny;
1401 	shr.s_sysid = smb_ct.cc_sysid;
1402 	shr.s_pid = uniq_fid;
1403 	shr.s_own_len = sizeof (shr_own);
1404 	shr.s_owner = (caddr_t)&shr_own;
1405 	shr_own.sl_id = shr.s_sysid;
1406 	shr_own.sl_pid = shr.s_pid;
1407 
1408 	return (VOP_SHRLOCK(vp, cmd, &shr, flag, cr, NULL));
1409 }
1410 
1411 int
smb_vop_unshrlock(vnode_t * vp,uint32_t uniq_fid,cred_t * cr)1412 smb_vop_unshrlock(vnode_t *vp, uint32_t uniq_fid, cred_t *cr)
1413 {
1414 	struct shrlock shr;
1415 	struct shr_locowner shr_own;
1416 
1417 	/*
1418 	 * share locking is not supported for non-regular
1419 	 * objects in NBMAND mode.
1420 	 */
1421 	if (nbl_need_check(vp) && (vp->v_type != VREG))
1422 		return (0);
1423 
1424 	/*
1425 	 * For s_access and s_deny, we do not need to pass in the original
1426 	 * values.
1427 	 */
1428 	shr.s_access = 0;
1429 	shr.s_deny = 0;
1430 	shr.s_sysid = smb_ct.cc_sysid;
1431 	shr.s_pid = uniq_fid;
1432 	shr.s_own_len = sizeof (shr_own);
1433 	shr.s_owner = (caddr_t)&shr_own;
1434 	shr_own.sl_id = shr.s_sysid;
1435 	shr_own.sl_pid = shr.s_pid;
1436 
1437 	return (VOP_SHRLOCK(vp, F_UNSHARE, &shr, 0, cr, NULL));
1438 }
1439 
1440 int
smb_vop_frlock(vnode_t * vp,cred_t * cr,int flag,flock64_t * bf)1441 smb_vop_frlock(vnode_t *vp, cred_t *cr, int flag, flock64_t *bf)
1442 {
1443 	int cmd = nbl_need_check(vp) ? F_SETLK_NBMAND : F_SETLK;
1444 	flk_callback_t flk_cb;
1445 
1446 	flk_init_callback(&flk_cb, smb_lock_frlock_callback, NULL);
1447 
1448 	return (VOP_FRLOCK(vp, cmd, bf, flag, 0, &flk_cb, cr, &smb_ct));
1449 }
1450 
1451 static callb_cpr_t *
1452 /* ARGSUSED */
smb_lock_frlock_callback(flk_cb_when_t when,void * error)1453 smb_lock_frlock_callback(flk_cb_when_t when, void *error)
1454 {
1455 	return (0);
1456 }
1457 
1458 /*
1459  * smb_vop_catia_init_v4_lookup
1460  * Initialize  mapping between wide characters in the range from
1461  * 0x00A4 to 0x00FF and their UNIX (v4) equivalent (wide character).
1462  * Indexed by the decimal value of the wide character (164-255)
1463  * with an offset of -164.
1464  */
1465 static void
smb_vop_catia_init_v4_lookup()1466 smb_vop_catia_init_v4_lookup()
1467 {
1468 	int i, idx, offset = SMB_CATIA_V4_LOOKUP_LOW;
1469 
1470 	for (i = 0; i < SMB_CATIA_V4_LOOKUP_MAX; i++)
1471 		smb_catia_v4_lookup[i] = (smb_wchar_t)(i + offset);
1472 
1473 	for (i = 0; i < SMB_CATIA_NUM_MAPS; i++) {
1474 		idx = (int)catia_maps[i].winchar - offset;
1475 		smb_catia_v4_lookup[idx] = (smb_wchar_t)catia_maps[i].unixchar;
1476 	}
1477 }
1478 
1479 /*
1480  * smb_vop_catia_init_v5_lookup
1481  * Initialize mapping between UNIX ASCII (v4) characters and equivalent
1482  * or translated wide characters.
1483  * Indexed by the decimal value of the ASCII character (0-127).
1484  */
1485 static void
smb_vop_catia_init_v5_lookup()1486 smb_vop_catia_init_v5_lookup()
1487 {
1488 	int i, idx;
1489 
1490 	for (i = 0; i < SMB_CATIA_V5_LOOKUP_MAX; i++)
1491 		smb_catia_v5_lookup[i] = (smb_wchar_t)i;
1492 
1493 	for (i = 0; i < SMB_CATIA_NUM_MAPS; i++) {
1494 		idx = (int)catia_maps[i].unixchar;
1495 		smb_catia_v5_lookup[idx] = catia_maps[i].winchar;
1496 	}
1497 }
1498 
1499 static void
smb_vop_catia_init()1500 smb_vop_catia_init()
1501 {
1502 	smb_vop_catia_init_v4_lookup();
1503 	smb_vop_catia_init_v5_lookup();
1504 }
1505 
1506 /*
1507  * smb_vop_catia_v5tov4
1508  * (windows (v5) to unix (v4))
1509  *
1510  * Traverse each character in the given source filename and convert the
1511  * multibyte that is equivalent to any special Windows character listed
1512  * in the catia_maps table to the Unix ASCII character if any is
1513  * encountered in the filename. The translated name is returned in buf.
1514  *
1515  * If an error occurs the conversion terminates and name is returned,
1516  * otherwise buf is returned.
1517  */
1518 char *
smb_vop_catia_v5tov4(char * name,char * buf,int buflen)1519 smb_vop_catia_v5tov4(char *name, char *buf, int buflen)
1520 {
1521 	int v4_idx, numbytes, inc;
1522 	int space_left = buflen - 1; /* one byte reserved for null */
1523 	smb_wchar_t wc;
1524 	char mbstring[MTS_MB_CHAR_MAX];
1525 	char *p, *src = name, *dst = buf;
1526 
1527 	ASSERT(name);
1528 	ASSERT(buf);
1529 
1530 	if (!buf || !name)
1531 		return (name);
1532 
1533 	bzero(buf, buflen);
1534 
1535 	while (*src) {
1536 		if ((numbytes = smb_mbtowc(&wc, src, MTS_MB_CHAR_MAX)) < 0)
1537 			return (name);
1538 
1539 		if (wc < SMB_CATIA_V4_LOOKUP_LOW ||
1540 		    wc > SMB_CATIA_V4_LOOKUP_UPPER) {
1541 			inc = numbytes;
1542 			p = src;
1543 		} else {
1544 			/* Lookup required. */
1545 			v4_idx = (int)wc - SMB_CATIA_V4_LOOKUP_LOW;
1546 			inc = smb_wctomb(mbstring, smb_catia_v4_lookup[v4_idx]);
1547 			p = mbstring;
1548 		}
1549 
1550 		if (space_left < inc)
1551 			return (name);
1552 
1553 		(void) strncpy(dst, p, inc);
1554 		dst += inc;
1555 		space_left -= inc;
1556 		src += numbytes;
1557 	}
1558 
1559 	return (buf);
1560 }
1561 
1562 /*
1563  * smb_vop_catia_v4tov5
1564  * (unix (v4) to windows (v5))
1565  *
1566  * Traverse each character in the given filename 'srcbuf' and convert
1567  * the special Unix character that is listed in the catia_maps table to
1568  * the UTF-8 encoding of the corresponding Windows character if any is
1569  * encountered in the filename.
1570  *
1571  * The translated name is returned in buf.
1572  * If an error occurs the conversion terminates and the original name
1573  * is returned in buf.
1574  */
1575 void
smb_vop_catia_v4tov5(char * name,char * buf,int buflen)1576 smb_vop_catia_v4tov5(char *name, char *buf, int buflen)
1577 {
1578 	int v5_idx, numbytes;
1579 	int space_left = buflen - 1; /* one byte reserved for null */
1580 	smb_wchar_t wc;
1581 	char mbstring[MTS_MB_CHAR_MAX];
1582 	char *src = name, *dst = buf;
1583 
1584 	ASSERT(name);
1585 	ASSERT(buf);
1586 
1587 	if (!buf || !name)
1588 		return;
1589 
1590 	(void) bzero(buf, buflen);
1591 	while (*src) {
1592 		if (smb_isascii(*src)) {
1593 			/* Lookup required */
1594 			v5_idx = (int)*src++;
1595 			numbytes = smb_wctomb(mbstring,
1596 			    smb_catia_v5_lookup[v5_idx]);
1597 			if (space_left < numbytes)
1598 				break;
1599 			(void) strncpy(dst, mbstring, numbytes);
1600 		} else {
1601 			if ((numbytes = smb_mbtowc(&wc, src,
1602 			    MTS_MB_CHAR_MAX)) < 0)
1603 				break;
1604 			if (space_left < numbytes)
1605 				break;
1606 			(void) strncpy(dst, src, numbytes);
1607 			src += numbytes;
1608 		}
1609 
1610 		dst += numbytes;
1611 		space_left -= numbytes;
1612 	}
1613 
1614 	if (*src)
1615 		(void) strlcpy(buf, name, buflen);
1616 }
1617