xref: /illumos-gate/usr/src/uts/common/fs/smbsrv/smb_find.c (revision 8c69cc8fbe729fa7b091e901c4b50508ccc6bb33)
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 <smbsrv/smb_kproto.h>
27 
28 /*
29  * smb_com_search
30  * smb_com_find, smb_com_find_close
31  * smb_find_unique
32  *
33  * These commands are used for directory searching. They share the same
34  * message formats, defined below:
35  *
36  * Client Request                     Description
37  * ---------------------------------- ---------------------------------
38  *
39  * UCHAR WordCount;                   Count of parameter words = 2
40  * USHORT MaxCount;                   Number of dir. entries to return
41  * USHORT SearchAttributes;
42  * USHORT ByteCount;                  Count of data bytes;  min = 5
43  * UCHAR BufferFormat1;               0x04 -- ASCII
44  * UCHAR FileName[];                  File name, may be null
45  * UCHAR BufferFormat2;               0x05 -- Variable block
46  * USHORT ResumeKeyLength;            Length of resume key, may be 0
47  * UCHAR ResumeKey[];                 Resume key
48  *
49  * FileName specifies the file to be sought.  SearchAttributes indicates
50  * the attributes that the file must have.  If  SearchAttributes is
51  * zero then only normal files are returned.  If the system file, hidden or
52  * directory attributes are specified then the search is inclusive - both the
53  * specified type(s) of files and normal files are returned.  If the volume
54  * label attribute is specified then the search is exclusive, and only the
55  * volume label entry is returned.
56  *
57  * MaxCount specifies the number of directory entries to be returned.
58  *
59  * Server Response                    Description
60  * ---------------------------------- ---------------------------------
61  *
62  * UCHAR WordCount;                   Count of parameter words = 1
63  * USHORT Count;                      Number of entries returned
64  * USHORT ByteCount;                  Count of data bytes;  min = 3
65  * UCHAR BufferFormat;                0x05 -- Variable block
66  * USHORT DataLength;                 Length of data
67  * UCHAR DirectoryInformationData[];  Data
68  *
69  * The response will contain one or more directory entries as determined by
70  * the Count field.  No more than MaxCount entries will be returned.  Only
71  * entries that match the sought FileName and SearchAttributes combination
72  * will be returned.
73  *
74  * ResumeKey must be null (length = 0) on the initial search request.
75  * Subsequent search requests intended to continue a search must contain
76  * the ResumeKey field extracted from the last directory entry of the
77  * previous response.  ResumeKey is self-contained, for calls containing
78  * a non-zero ResumeKey neither the SearchAttributes or FileName fields
79  * will be valid in the request.  ResumeKey has the following format:
80  *
81  * Resume Key Field                   Description
82  * ---------------------------------- ---------------------------------
83  *
84  * UCHAR Reserved;                    bit 7 - consumer use
85  *                                    bits 5,6 - system use (must preserve)
86  *                                    bits 0-4 - server use (must preserve)
87  * UCHAR FileName[11];                Name of the returned file
88  * UCHAR ReservedForServer[5];        Client must not modify
89  *                                    byte 0 - uniquely identifies find
90  *                                    through find_close
91  *                                    bytes 1-4 - available for server use
92  *                                    (must be non-zero)
93  * UCHAR ReservedForConsumer[4];      Server must not modify
94  *
95  * FileName is 8.3 format, with the three character extension left
96  * justified into FileName[9-11].
97  *
98  * There may be multiple matching entries in response to a single request
99  * as wildcards are supported in the last component of FileName of the
100  * initial request.
101  *
102  * Returned directory entries in the DirectoryInformationData field of the
103  * response each have the following format:
104  *
105  * Directory Information Field        Description
106  * ---------------------------------- ---------------------------------
107  *
108  * SMB_RESUME_KEY ResumeKey;          Described above
109  * UCHAR FileAttributes;              Attributes of the found file
110  * SMB_TIME LastWriteTime;            Time file was last written
111  * SMB_DATE LastWriteDate;            Date file was last written
112  * ULONG FileSize;                    Size of the file
113  * UCHAR FileName[13];                ASCII, space-filled null terminated
114  *
115  * FileName must conform to 8.3 rules, and is padded after the extension
116  * with 0x20 characters if necessary.
117  *
118  * As can be seen from the above structure, these commands cannot return
119  * long filenames, and cannot return UNICODE filenames.
120  *
121  * Files which have a size greater than 2^32 bytes should have the least
122  * significant 32 bits of their size returned in FileSize.
123  *
124  * smb_com_search
125  * --------------
126  *
127  * If the client is prior to the LANMAN1.0 dialect, the returned FileName
128  * should be uppercased.
129  * If the client has negotiated a dialect prior to the LANMAN1.0 dialect,
130  * or if bit0 of the Flags2 SMB header field of the request is clear,
131  * the returned FileName should be uppercased.
132  *
133  * SMB_COM_SEARCH terminates when either the requested maximum number of
134  * entries that match the named file are found, or the end of directory is
135  * reached without the maximum number of matches being found.  A response
136  * containing no entries indicates that no matching entries were found
137  * between the starting point of the search and the end of directory.
138  *
139  *
140  * The find, find_close and find_unique protocols may be used in place of
141  * the core "search" protocol when LANMAN 1.0 dialect has been negotiated.
142  *
143  * smb_com_find
144  * ------------
145  *
146  * The find protocol is used to match the find OS/2 system call.
147  *
148  * The format of the find protocol is the same as the core "search" protocol.
149  * The difference is that the directory is logically Opened with a find protocol
150  * and logically closed with the find close protocol.
151  * As is true of a failing open, if a find request (find "first" request where
152  * resume_key is null) fails (no entries are found), no find close protocol is
153  * expected.
154  *
155  * If no global characters are present, a "find unique" protocol should be used
156  * (only one entry is expected and find close need not be sent).
157  *
158  * A find request will terminate when either the requested maximum number of
159  * entries that match the named file are found, or the end of directory is
160  * reached without the maximum number of matches being found. A response
161  * containing no entries indicates that no matching entries were found between
162  * the starting point of the search and the end of directory.
163  *
164  * If a find requests more data than can be placed in a message of the
165  * max-xmit-size for the TID specified, the server will return only the number
166  * of entries which will fit.
167  *
168  *
169  * smb_com_find_close
170  * ------------------
171  *
172  * The find close protocol is used to match the find close OS/2 system call.
173  *
174  * Whereas the first find protocol logically opens the directory, subsequent
175  * find  protocols presenting a resume_key further "read" the directory, the
176  * find close  protocol "closes" the  directory allowing the server to free any
177  * resources held in support of the directory search.
178  *
179  * In our implementation this translates to closing the odir.
180  *
181  *
182  * smb_com_find_unique
183  * -------------------
184  *
185  * The format of the find unique protocol is the same as the core "search"
186  * protocol. The difference is that the directory is logically opened, any
187  * matching entries returned, and then the directory is logically closed.
188  *
189  * The resume search key key will be returned as in the find protocol and
190  * search protocol however it may NOT be returned to continue the search.
191  * Only one buffer of entries is expected and find close need not be sent.
192  *
193  * If a find unique requests more data than can be placed in a message of the
194  * max-xmit-size for the TID specified, the server will abort the virtual
195  * circuit to the consumer.
196  */
197 
198 #define	SMB_NAME83_BUFLEN	12
199 static void smb_name83(const char *, char *, size_t);
200 
201 /* *** smb_com_search *** */
202 
203 smb_sdrc_t
204 smb_pre_search(smb_request_t *sr)
205 {
206 	DTRACE_SMB_1(op__Search__start, smb_request_t *, sr);
207 	return (SDRC_SUCCESS);
208 }
209 
210 void
211 smb_post_search(smb_request_t *sr)
212 {
213 	DTRACE_SMB_1(op__Search__done, smb_request_t *, sr);
214 }
215 
216 smb_sdrc_t
217 smb_com_search(smb_request_t *sr)
218 {
219 	int			rc;
220 	uint16_t		count, maxcount, index;
221 	uint16_t		sattr, odid;
222 	uint16_t		key_len;
223 	uint32_t		client_key;
224 	char			name[SMB_SHORTNAMELEN];
225 	char			name83[SMB_SHORTNAMELEN];
226 	smb_pathname_t		*pn;
227 	unsigned char		resume_char;
228 	unsigned char		type;
229 	boolean_t		find_first, to_upper;
230 	smb_tree_t		*tree;
231 	smb_odir_t		*od;
232 	smb_fileinfo_t		fileinfo;
233 	smb_odir_resume_t	odir_resume;
234 	uint32_t		status;
235 	uint16_t		eos;
236 
237 	to_upper = B_FALSE;
238 	if ((sr->session->dialect <= LANMAN1_0) ||
239 	    ((sr->smb_flg2 & SMB_FLAGS2_KNOWS_LONG_NAMES) == 0)) {
240 		to_upper = B_TRUE;
241 	}
242 
243 	/* We only handle 8.3 name here */
244 	sr->smb_flg2 &= ~SMB_FLAGS2_KNOWS_LONG_NAMES;
245 	sr->smb_flg &= ~SMB_FLAGS_CASE_INSENSITIVE;
246 
247 	if (smbsr_decode_vwv(sr, "ww", &maxcount, &sattr) != 0)
248 		return (SDRC_ERROR);
249 
250 	pn = &sr->arg.dirop.fqi.fq_path;
251 	rc = smbsr_decode_data(sr, "%Abw", sr, &pn->pn_path, &type, &key_len);
252 	if ((rc != 0) || (type != 0x05))
253 		return (SDRC_ERROR);
254 
255 	smb_pathname_init(sr, pn, pn->pn_path);
256 	if (!smb_pathname_validate(sr, pn) ||
257 	    smb_is_stream_name(pn->pn_path)) {
258 		smbsr_warn(sr, NT_STATUS_NO_MORE_FILES,
259 		    ERRDOS, ERROR_NO_MORE_FILES);
260 		return (SDRC_ERROR);
261 	}
262 
263 	tree = sr->tid_tree;
264 
265 	/* Volume information only */
266 	if ((sattr == FILE_ATTRIBUTE_VOLUME) && (key_len != 21)) {
267 		(void) memset(name, ' ', sizeof (name));
268 		(void) strncpy(name, tree->t_volume, sizeof (name));
269 
270 		if (key_len >= 21) {
271 			(void) smb_mbc_decodef(&sr->smb_data, "17.l",
272 			    &client_key);
273 		} else {
274 			client_key = 0;
275 		}
276 
277 		(void) smb_mbc_encodef(&sr->reply, "bwwbwb11c5.lb8.13c",
278 		    1, 0, VAR_BCC, 5, 0, 0, pn->pn_path+1,
279 		    client_key, sattr, name);
280 
281 		rc = (sr->reply.chain_offset - sr->cur_reply_offset) - 8;
282 		(void) smb_mbc_poke(&sr->reply, sr->cur_reply_offset, "bwwbw",
283 		    1, 1, rc+3, 5, rc);
284 
285 		return (SDRC_SUCCESS);
286 	}
287 
288 	if ((key_len != 0) && (key_len != 21))
289 		return (SDRC_ERROR);
290 
291 	find_first = (key_len == 0);
292 	resume_char = 0;
293 	client_key = 0;
294 
295 	if (find_first) {
296 		status = smb_odir_openpath(sr, pn->pn_path, sattr, 0, &od);
297 		if (status != 0) {
298 			if (status == NT_STATUS_ACCESS_DENIED)
299 				smbsr_warn(sr, NT_STATUS_NO_MORE_FILES,
300 				    ERRDOS, ERROR_NO_MORE_FILES);
301 			return (SDRC_ERROR);
302 		}
303 	} else {
304 		if (smb_mbc_decodef(&sr->smb_data, "b12.wwl",
305 		    &resume_char, &index, &odid, &client_key) != 0) {
306 			return (SDRC_ERROR);
307 		}
308 		od = smb_tree_lookup_odir(sr, odid);
309 	}
310 
311 	if (od == NULL) {
312 		smbsr_error(sr, NT_STATUS_INVALID_HANDLE,
313 		    ERRDOS, ERROR_INVALID_HANDLE);
314 		return (SDRC_ERROR);
315 	}
316 
317 	if (!find_first) {
318 		if ((od->d_flags & SMB_ODIR_FLAG_WILDCARDS) == 0) {
319 			od->d_eof = B_TRUE;
320 		} else {
321 			odir_resume.or_type = SMB_ODIR_RESUME_IDX;
322 			odir_resume.or_idx = index;
323 			smb_odir_resume_at(od, &odir_resume);
324 		}
325 	}
326 
327 	(void) smb_mbc_encodef(&sr->reply, "bwwbw", 1, 0, VAR_BCC, 5, 0);
328 
329 	rc = 0;
330 	index = 0;
331 	count = 0;
332 	if (maxcount > SMB_MAX_SEARCH)
333 		maxcount = SMB_MAX_SEARCH;
334 
335 	while (count < maxcount) {
336 		rc = smb_odir_read_fileinfo(sr, od, &fileinfo, &eos);
337 		if (rc != 0 || eos != 0)
338 			break;
339 
340 		if (*fileinfo.fi_shortname == '\0') {
341 			if (smb_needs_mangled(fileinfo.fi_name))
342 				continue;
343 			(void) strlcpy(fileinfo.fi_shortname, fileinfo.fi_name,
344 			    SMB_SHORTNAMELEN - 1);
345 			if (to_upper)
346 				(void) smb_strupr(fileinfo.fi_shortname);
347 		}
348 		smb_name83(fileinfo.fi_shortname, name83, SMB_SHORTNAMELEN);
349 
350 		(void) smb_mbc_encodef(&sr->reply, "b11c.wwlbYl13c",
351 		    resume_char, name83, index, odid, client_key,
352 		    fileinfo.fi_dosattr & 0xff,
353 		    smb_time_gmt_to_local(sr, fileinfo.fi_mtime.tv_sec),
354 		    (int32_t)fileinfo.fi_size,
355 		    fileinfo.fi_shortname);
356 
357 		smb_odir_save_cookie(od, index, fileinfo.fi_cookie);
358 
359 		count++;
360 		index++;
361 	}
362 	if (eos && rc == ENOENT)
363 		rc = 0;
364 
365 	if (rc != 0) {
366 		smb_odir_close(od);
367 		smb_odir_release(od);
368 		return (SDRC_ERROR);
369 	}
370 
371 	if (count == 0 && find_first) {
372 		smb_odir_close(od);
373 		smb_odir_release(od);
374 		smbsr_warn(sr, NT_STATUS_NO_MORE_FILES,
375 		    ERRDOS, ERROR_NO_MORE_FILES);
376 		return (SDRC_ERROR);
377 	}
378 
379 	rc = (sr->reply.chain_offset - sr->cur_reply_offset) - 8;
380 	if (smb_mbc_poke(&sr->reply, sr->cur_reply_offset, "bwwbw",
381 	    1, count, rc+3, 5, rc) < 0) {
382 		smb_odir_close(od);
383 		smb_odir_release(od);
384 		return (SDRC_ERROR);
385 	}
386 
387 	smb_odir_release(od);
388 	return (SDRC_SUCCESS);
389 }
390 
391 
392 /* *** smb_com_find *** */
393 
394 smb_sdrc_t
395 smb_pre_find(smb_request_t *sr)
396 {
397 	DTRACE_SMB_1(op__Find__start, smb_request_t *, sr);
398 	return (SDRC_SUCCESS);
399 }
400 
401 void
402 smb_post_find(smb_request_t *sr)
403 {
404 	DTRACE_SMB_1(op__Find__done, smb_request_t *, sr);
405 }
406 
407 smb_sdrc_t
408 smb_com_find(smb_request_t *sr)
409 {
410 	int			rc;
411 	uint16_t		count, maxcount, index;
412 	uint16_t		sattr, odid;
413 	uint16_t		key_len;
414 	uint32_t		client_key;
415 	char			name83[SMB_SHORTNAMELEN];
416 	smb_odir_t		*od;
417 	smb_fileinfo_t		fileinfo;
418 	uint32_t		status;
419 	uint16_t		eos;
420 
421 	smb_pathname_t		*pn;
422 	unsigned char		resume_char;
423 	unsigned char		type;
424 	boolean_t		find_first = B_TRUE;
425 	smb_odir_resume_t	odir_resume;
426 
427 	if (smbsr_decode_vwv(sr, "ww", &maxcount, &sattr) != 0)
428 		return (SDRC_ERROR);
429 
430 	pn = &sr->arg.dirop.fqi.fq_path;
431 	rc = smbsr_decode_data(sr, "%Abw", sr, &pn->pn_path, &type, &key_len);
432 	if ((rc != 0) || (type != 0x05))
433 		return (SDRC_ERROR);
434 
435 	if ((key_len != 0) && (key_len != 21))
436 		return (SDRC_ERROR);
437 
438 	smb_pathname_init(sr, pn, pn->pn_path);
439 	if (!smb_pathname_validate(sr, pn))
440 		return (SDRC_ERROR);
441 
442 	if (smb_is_stream_name(pn->pn_path)) {
443 		smbsr_error(sr, NT_STATUS_OBJECT_NAME_INVALID,
444 		    ERRDOS, ERROR_INVALID_NAME);
445 		return (SDRC_ERROR);
446 	}
447 
448 	find_first = (key_len == 0);
449 	resume_char = 0;
450 	client_key = 0;
451 
452 	if (find_first) {
453 		status = smb_odir_openpath(sr, pn->pn_path, sattr, 0, &od);
454 		if (status != 0) {
455 			smbsr_error(sr, status, 0, 0);
456 			return (SDRC_ERROR);
457 		}
458 	} else {
459 		if (smb_mbc_decodef(&sr->smb_data, "b12.wwl",
460 		    &resume_char, &index, &odid, &client_key) != 0) {
461 			return (SDRC_ERROR);
462 		}
463 		od = smb_tree_lookup_odir(sr, odid);
464 	}
465 
466 	if (od == NULL) {
467 		smbsr_error(sr, NT_STATUS_INVALID_HANDLE,
468 		    ERRDOS, ERROR_INVALID_HANDLE);
469 		return (SDRC_ERROR);
470 	}
471 
472 	if (!find_first) {
473 		if ((od->d_flags & SMB_ODIR_FLAG_WILDCARDS) == 0) {
474 			od->d_eof = B_TRUE;
475 		} else {
476 			odir_resume.or_type = SMB_ODIR_RESUME_IDX;
477 			odir_resume.or_idx = index;
478 			smb_odir_resume_at(od, &odir_resume);
479 		}
480 	}
481 
482 	(void) smb_mbc_encodef(&sr->reply, "bwwbw", 1, 0, VAR_BCC, 5, 0);
483 
484 	rc = 0;
485 	index = 0;
486 	count = 0;
487 	if (maxcount > SMB_MAX_SEARCH)
488 		maxcount = SMB_MAX_SEARCH;
489 
490 	while (count < maxcount) {
491 		rc = smb_odir_read_fileinfo(sr, od, &fileinfo, &eos);
492 		if (rc != 0 || eos != 0)
493 			break;
494 
495 		if (*fileinfo.fi_shortname == '\0') {
496 			if (smb_needs_mangled(fileinfo.fi_name))
497 				continue;
498 			(void) strlcpy(fileinfo.fi_shortname, fileinfo.fi_name,
499 			    SMB_SHORTNAMELEN - 1);
500 		}
501 		smb_name83(fileinfo.fi_shortname, name83, SMB_SHORTNAMELEN);
502 
503 		(void) smb_mbc_encodef(&sr->reply, "b11c.wwlbYl13c",
504 		    resume_char, name83, index, odid, client_key,
505 		    fileinfo.fi_dosattr & 0xff,
506 		    smb_time_gmt_to_local(sr, fileinfo.fi_mtime.tv_sec),
507 		    (int32_t)fileinfo.fi_size,
508 		    fileinfo.fi_shortname);
509 
510 		smb_odir_save_cookie(od, index, fileinfo.fi_cookie);
511 
512 		count++;
513 		index++;
514 	}
515 	if (eos && rc == ENOENT)
516 		rc = 0;
517 
518 	if (rc != 0) {
519 		smb_odir_close(od);
520 		smb_odir_release(od);
521 		return (SDRC_ERROR);
522 	}
523 
524 	if (count == 0 && find_first) {
525 		smb_odir_close(od);
526 		smb_odir_release(od);
527 		smbsr_warn(sr, NT_STATUS_NO_MORE_FILES,
528 		    ERRDOS, ERROR_NO_MORE_FILES);
529 		return (SDRC_ERROR);
530 	}
531 
532 	rc = (MBC_LENGTH(&sr->reply) - sr->cur_reply_offset) - 8;
533 	if (smb_mbc_poke(&sr->reply, sr->cur_reply_offset, "bwwbw",
534 	    1, count, rc+3, 5, rc) < 0) {
535 		smb_odir_close(od);
536 		smb_odir_release(od);
537 		return (SDRC_ERROR);
538 	}
539 
540 	smb_odir_release(od);
541 	return (SDRC_SUCCESS);
542 }
543 
544 
545 /* *** smb_com_find_close *** */
546 
547 smb_sdrc_t
548 smb_pre_find_close(smb_request_t *sr)
549 {
550 	DTRACE_SMB_1(op__FindClose__start, smb_request_t *, sr);
551 	return (SDRC_SUCCESS);
552 }
553 
554 void
555 smb_post_find_close(smb_request_t *sr)
556 {
557 	DTRACE_SMB_1(op__FindClose__done, smb_request_t *, sr);
558 }
559 
560 smb_sdrc_t
561 smb_com_find_close(smb_request_t *sr)
562 {
563 	int		rc;
564 	uint16_t	maxcount, index;
565 	uint16_t	sattr, odid;
566 	uint16_t	key_len;
567 	uint32_t	client_key;
568 	char		*path;
569 	unsigned char	resume_char;
570 	unsigned char	type;
571 	smb_odir_t	*od;
572 
573 	if (smbsr_decode_vwv(sr, "ww", &maxcount, &sattr) != 0)
574 		return (SDRC_ERROR);
575 
576 	rc = smbsr_decode_data(sr, "%Abw", sr, &path, &type, &key_len);
577 	if ((rc != 0) || (type != 0x05))
578 		return (SDRC_ERROR);
579 
580 	if (key_len == 0) {
581 		smbsr_error(sr, NT_STATUS_INVALID_HANDLE,
582 		    ERRDOS, ERROR_INVALID_HANDLE);
583 		return (SDRC_ERROR);
584 	} else if (key_len != 21) {
585 		return (SDRC_ERROR);
586 	}
587 
588 	odid = 0;
589 	if (smb_mbc_decodef(&sr->smb_data, "b12.wwl",
590 	    &resume_char, &index, &odid, &client_key) != 0) {
591 		return (SDRC_ERROR);
592 	}
593 
594 	od = smb_tree_lookup_odir(sr, odid);
595 	if (od == NULL) {
596 		smbsr_error(sr, NT_STATUS_INVALID_HANDLE,
597 		    ERRDOS, ERROR_INVALID_HANDLE);
598 		return (SDRC_ERROR);
599 	}
600 
601 	smb_odir_close(od);
602 	smb_odir_release(od);
603 
604 	if (smbsr_encode_result(sr, 1, 3, "bwwbw", 1, 0, 3, 5, 0))
605 		return (SDRC_ERROR);
606 
607 	return (SDRC_SUCCESS);
608 }
609 
610 
611 /* *** smb_com_find_unique *** */
612 
613 smb_sdrc_t
614 smb_pre_find_unique(smb_request_t *sr)
615 {
616 	DTRACE_SMB_1(op__FindUnique__start, smb_request_t *, sr);
617 	return (SDRC_SUCCESS);
618 }
619 
620 void
621 smb_post_find_unique(smb_request_t *sr)
622 {
623 	DTRACE_SMB_1(op__FindUnique__done, smb_request_t *, sr);
624 }
625 
626 smb_sdrc_t
627 smb_com_find_unique(struct smb_request *sr)
628 {
629 	int			rc;
630 	uint16_t		count, maxcount, index;
631 	uint16_t		sattr;
632 	smb_pathname_t		*pn;
633 	unsigned char		resume_char = '\0';
634 	uint32_t		client_key = 0;
635 	char			name83[SMB_SHORTNAMELEN];
636 	smb_odir_t		*od;
637 	smb_fileinfo_t		fileinfo;
638 	uint32_t		status;
639 	uint16_t		eos;
640 	smb_vdb_t		*vdb;
641 
642 	if (smbsr_decode_vwv(sr, "ww", &maxcount, &sattr) != 0)
643 		return (SDRC_ERROR);
644 
645 	pn = &sr->arg.dirop.fqi.fq_path;
646 	vdb = kmem_alloc(sizeof (smb_vdb_t), KM_SLEEP);
647 	if ((smbsr_decode_data(sr, "%AV", sr, &pn->pn_path, vdb) != 0) ||
648 	    (vdb->vdb_len != 0)) {
649 		kmem_free(vdb, sizeof (smb_vdb_t));
650 		return (SDRC_ERROR);
651 	}
652 	kmem_free(vdb, sizeof (smb_vdb_t));
653 
654 	smb_pathname_init(sr, pn, pn->pn_path);
655 	if (!smb_pathname_validate(sr, pn))
656 		return (SDRC_ERROR);
657 
658 	if (smb_is_stream_name(pn->pn_path)) {
659 		smbsr_error(sr, NT_STATUS_OBJECT_NAME_INVALID,
660 		    ERRDOS, ERROR_INVALID_NAME);
661 		return (SDRC_ERROR);
662 	}
663 
664 	(void) smb_mbc_encodef(&sr->reply, "bwwbw", 1, 0, VAR_BCC, 5, 0);
665 
666 	status = smb_odir_openpath(sr, pn->pn_path, sattr, 0, &od);
667 	if (status != 0) {
668 		smbsr_error(sr, status, 0, 0);
669 		return (SDRC_ERROR);
670 	}
671 	if (od == NULL)
672 		return (SDRC_ERROR);
673 
674 	rc = 0;
675 	count = 0;
676 	index = 0;
677 	if (maxcount > SMB_MAX_SEARCH)
678 		maxcount = SMB_MAX_SEARCH;
679 
680 	while (count < maxcount) {
681 		rc = smb_odir_read_fileinfo(sr, od, &fileinfo, &eos);
682 		if (rc != 0 || eos != 0)
683 			break;
684 
685 		if (*fileinfo.fi_shortname == '\0') {
686 			if (smb_needs_mangled(fileinfo.fi_name))
687 				continue;
688 			(void) strlcpy(fileinfo.fi_shortname, fileinfo.fi_name,
689 			    SMB_SHORTNAMELEN - 1);
690 		}
691 		smb_name83(fileinfo.fi_shortname, name83, SMB_SHORTNAMELEN);
692 
693 		(void) smb_mbc_encodef(&sr->reply, "b11c.wwlbYl13c",
694 		    resume_char, name83, index, od->d_odid,
695 		    client_key, fileinfo.fi_dosattr & 0xff,
696 		    smb_time_gmt_to_local(sr, fileinfo.fi_mtime.tv_sec),
697 		    (int32_t)fileinfo.fi_size,
698 		    fileinfo.fi_shortname);
699 
700 		count++;
701 		index++;
702 	}
703 	if (eos && rc == ENOENT)
704 		rc = 0;
705 
706 	smb_odir_close(od);
707 	smb_odir_release(od);
708 
709 	if (rc != 0)
710 		return (SDRC_ERROR);
711 
712 	if (count == 0) {
713 		smbsr_warn(sr, NT_STATUS_NO_MORE_FILES,
714 		    ERRDOS, ERROR_NO_MORE_FILES);
715 		return (SDRC_ERROR);
716 	}
717 
718 	rc = (MBC_LENGTH(&sr->reply) - sr->cur_reply_offset) - 8;
719 	if (smb_mbc_poke(&sr->reply, sr->cur_reply_offset,
720 	    "bwwbw", 1, count, rc+3, 5, rc) < 0) {
721 		return (SDRC_ERROR);
722 	}
723 
724 	return (SDRC_SUCCESS);
725 }
726 
727 /*
728  * smb_name83
729  *
730  * Format the filename for inclusion in the resume key. The filename
731  * returned in the resume key is 11 bytes:
732  * - up to 8 bytes of filename, space padded to 8 bytes
733  * - up to 3 bytes of ext, space padded to 3 bytes
734  *
735  * The name passed to smb_name83 should be a shortname or a name that
736  * doesn't require mangling.
737  *
738  * Examples:
739  *	"fname.txt"    -> "FNAME   TXT"
740  *	"fname.tx"     -> "FNAME   TX "
741  *	"filename"     -> "FILENAME   "
742  *	"filename.txt" -> "FILENAMETXT"
743  *	"FILE~1.TXT"   -> "FILE~1  TXT"
744  */
745 static void
746 smb_name83(const char *name, char *buf, size_t buflen)
747 {
748 	const char *p;
749 	char *pbuf;
750 	int i;
751 
752 	ASSERT(name && buf && (buflen >= SMB_NAME83_BUFLEN));
753 
754 	(void) strlcpy(buf, "           ", SMB_NAME83_BUFLEN);
755 
756 	/* Process "." and ".." up front */
757 	if ((strcmp(name, ".") == 0) || (strcmp(name, "..") == 0)) {
758 		(void) strncpy(buf, name, strlen(name));
759 		return;
760 	}
761 
762 	ASSERT(smb_needs_mangled(name) == B_FALSE);
763 
764 	/* Process basename */
765 	for (i = 0, p = name, pbuf = buf;
766 	    (i < SMB_NAME83_BASELEN) && (*p != '\0') && (*p != '.'); ++i)
767 		*pbuf++ = *p++;
768 
769 	/* Process the extension from the last dot in name */
770 	if ((p = strchr(name, '.')) != NULL) {
771 		++p;
772 		pbuf = &buf[SMB_NAME83_BASELEN];
773 		for (i = 0; (i < SMB_NAME83_EXTLEN) && (*p != '\0'); ++i)
774 			*pbuf++ = *p++;
775 	}
776 
777 	(void) smb_strupr(buf);
778 }
779