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[XFS] simplify ASSERT
[linux-2.6/openmoko-kernel/knife-kernel.git] / fs / cifs / cifssmb.c
blob3c628bf667a5f010ff17c14d2ffc04f499d80c7d
1 /*
2 * fs/cifs/cifssmb.c
3 *
4 * Copyright (C) International Business Machines Corp., 2002,2005
5 * Author(s): Steve French (sfrench@us.ibm.com)
6 *
7 * Contains the routines for constructing the SMB PDUs themselves
8 *
9 * This library is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU Lesser General Public License as published
11 * by the Free Software Foundation; either version 2.1 of the License, or
12 * (at your option) any later version.
13 *
14 * This library is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
17 * the GNU Lesser General Public License for more details.
18 *
19 * You should have received a copy of the GNU Lesser General Public License
20 * along with this library; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 */
23
24 /* SMB/CIFS PDU handling routines here - except for leftovers in connect.c */
25 /* These are mostly routines that operate on a pathname, or on a tree id */
26 /* (mounted volume), but there are eight handle based routines which must be */
27 /* treated slightly different for reconnection purposes since we never want */
28 /* to reuse a stale file handle and the caller knows the file handle */
29
30 #include <linux/fs.h>
31 #include <linux/kernel.h>
32 #include <linux/vfs.h>
33 #include <linux/posix_acl_xattr.h>
34 #include <asm/uaccess.h>
35 #include "cifspdu.h"
36 #include "cifsglob.h"
37 #include "cifsproto.h"
38 #include "cifs_unicode.h"
39 #include "cifs_debug.h"
40
41 #ifdef CONFIG_CIFS_POSIX
42 static struct {
43 int index;
44 char *name;
45 } protocols[] = {
46 {CIFS_PROT, "\2NT LM 0.12"},
47 {CIFS_PROT, "\2POSIX 2"},
48 {BAD_PROT, "\2"}
49 };
50 #else
51 static struct {
52 int index;
53 char *name;
54 } protocols[] = {
55 {CIFS_PROT, "\2NT LM 0.12"},
56 {BAD_PROT, "\2"}
57 };
58 #endif
59
60
61 /* Mark as invalid, all open files on tree connections since they
62 were closed when session to server was lost */
63 static void mark_open_files_invalid(struct cifsTconInfo * pTcon)
64 {
65 struct cifsFileInfo *open_file = NULL;
66 struct list_head * tmp;
67 struct list_head * tmp1;
68
69 /* list all files open on tree connection and mark them invalid */
70 write_lock(&GlobalSMBSeslock);
71 list_for_each_safe(tmp, tmp1, &pTcon->openFileList) {
72 open_file = list_entry(tmp,struct cifsFileInfo, tlist);
73 if(open_file) {
74 open_file->invalidHandle = TRUE;
75 }
76 }
77 write_unlock(&GlobalSMBSeslock);
78 /* BB Add call to invalidate_inodes(sb) for all superblocks mounted
79 to this tcon */
80 }
81
82 /* If the return code is zero, this function must fill in request_buf pointer */
83 static int
84 small_smb_init(int smb_command, int wct, struct cifsTconInfo *tcon,
85 void **request_buf /* returned */)
86 {
87 int rc = 0;
88
89 /* SMBs NegProt, SessSetup, uLogoff do not have tcon yet so
90 check for tcp and smb session status done differently
91 for those three - in the calling routine */
92 if(tcon) {
93 if((tcon->ses) && (tcon->ses->status != CifsExiting) &&
94 (tcon->ses->server)){
95 struct nls_table *nls_codepage;
96 /* Give Demultiplex thread up to 10 seconds to
97 reconnect, should be greater than cifs socket
98 timeout which is 7 seconds */
99 while(tcon->ses->server->tcpStatus == CifsNeedReconnect) {
100 wait_event_interruptible_timeout(tcon->ses->server->response_q,
101 (tcon->ses->server->tcpStatus == CifsGood), 10 * HZ);
102 if(tcon->ses->server->tcpStatus == CifsNeedReconnect) {
103 /* on "soft" mounts we wait once */
104 if((tcon->retry == FALSE) ||
105 (tcon->ses->status == CifsExiting)) {
106 cFYI(1,("gave up waiting on reconnect in smb_init"));
107 return -EHOSTDOWN;
108 } /* else "hard" mount - keep retrying
109 until process is killed or server
110 comes back on-line */
111 } else /* TCP session is reestablished now */
112 break;
113
114 }
115
116 nls_codepage = load_nls_default();
117 /* need to prevent multiple threads trying to
118 simultaneously reconnect the same SMB session */
119 down(&tcon->ses->sesSem);
120 if(tcon->ses->status == CifsNeedReconnect)
121 rc = cifs_setup_session(0, tcon->ses,
122 nls_codepage);
123 if(!rc && (tcon->tidStatus == CifsNeedReconnect)) {
124 mark_open_files_invalid(tcon);
125 rc = CIFSTCon(0, tcon->ses, tcon->treeName, tcon
126 , nls_codepage);
127 up(&tcon->ses->sesSem);
128 if(rc == 0)
129 atomic_inc(&tconInfoReconnectCount);
130
131 cFYI(1, ("reconnect tcon rc = %d", rc));
132 /* Removed call to reopen open files here -
133 it is safer (and faster) to reopen files
134 one at a time as needed in read and write */
135
136 /* Check if handle based operation so we
137 know whether we can continue or not without
138 returning to caller to reset file handle */
139 switch(smb_command) {
140 case SMB_COM_READ_ANDX:
141 case SMB_COM_WRITE_ANDX:
142 case SMB_COM_CLOSE:
143 case SMB_COM_FIND_CLOSE2:
144 case SMB_COM_LOCKING_ANDX: {
145 unload_nls(nls_codepage);
146 return -EAGAIN;
147 }
148 }
149 } else {
150 up(&tcon->ses->sesSem);
151 }
152 unload_nls(nls_codepage);
153
154 } else {
155 return -EIO;
156 }
157 }
158 if(rc)
159 return rc;
160
161 *request_buf = cifs_small_buf_get();
162 if (*request_buf == NULL) {
163 /* BB should we add a retry in here if not a writepage? */
164 return -ENOMEM;
165 }
166
167 header_assemble((struct smb_hdr *) *request_buf, smb_command, tcon,wct);
168
169 #ifdef CONFIG_CIFS_STATS
170 if(tcon != NULL) {
171 atomic_inc(&tcon->num_smbs_sent);
172 }
173 #endif /* CONFIG_CIFS_STATS */
174 return rc;
175 }
176
177 /* If the return code is zero, this function must fill in request_buf pointer */
178 static int
179 smb_init(int smb_command, int wct, struct cifsTconInfo *tcon,
180 void **request_buf /* returned */ ,
181 void **response_buf /* returned */ )
182 {
183 int rc = 0;
184
185 /* SMBs NegProt, SessSetup, uLogoff do not have tcon yet so
186 check for tcp and smb session status done differently
187 for those three - in the calling routine */
188 if(tcon) {
189 if((tcon->ses) && (tcon->ses->status != CifsExiting) &&
190 (tcon->ses->server)){
191 struct nls_table *nls_codepage;
192 /* Give Demultiplex thread up to 10 seconds to
193 reconnect, should be greater than cifs socket
194 timeout which is 7 seconds */
195 while(tcon->ses->server->tcpStatus == CifsNeedReconnect) {
196 wait_event_interruptible_timeout(tcon->ses->server->response_q,
197 (tcon->ses->server->tcpStatus == CifsGood), 10 * HZ);
198 if(tcon->ses->server->tcpStatus ==
199 CifsNeedReconnect) {
200 /* on "soft" mounts we wait once */
201 if((tcon->retry == FALSE) ||
202 (tcon->ses->status == CifsExiting)) {
203 cFYI(1,("gave up waiting on reconnect in smb_init"));
204 return -EHOSTDOWN;
205 } /* else "hard" mount - keep retrying
206 until process is killed or server
207 comes on-line */
208 } else /* TCP session is reestablished now */
209 break;
210
211 }
212
213 nls_codepage = load_nls_default();
214 /* need to prevent multiple threads trying to
215 simultaneously reconnect the same SMB session */
216 down(&tcon->ses->sesSem);
217 if(tcon->ses->status == CifsNeedReconnect)
218 rc = cifs_setup_session(0, tcon->ses,
219 nls_codepage);
220 if(!rc && (tcon->tidStatus == CifsNeedReconnect)) {
221 mark_open_files_invalid(tcon);
222 rc = CIFSTCon(0, tcon->ses, tcon->treeName,
223 tcon, nls_codepage);
224 up(&tcon->ses->sesSem);
225 if(rc == 0)
226 atomic_inc(&tconInfoReconnectCount);
227
228 cFYI(1, ("reconnect tcon rc = %d", rc));
229 /* Removed call to reopen open files here -
230 it is safer (and faster) to reopen files
231 one at a time as needed in read and write */
232
233 /* Check if handle based operation so we
234 know whether we can continue or not without
235 returning to caller to reset file handle */
236 switch(smb_command) {
237 case SMB_COM_READ_ANDX:
238 case SMB_COM_WRITE_ANDX:
239 case SMB_COM_CLOSE:
240 case SMB_COM_FIND_CLOSE2:
241 case SMB_COM_LOCKING_ANDX: {
242 unload_nls(nls_codepage);
243 return -EAGAIN;
244 }
245 }
246 } else {
247 up(&tcon->ses->sesSem);
248 }
249 unload_nls(nls_codepage);
250
251 } else {
252 return -EIO;
253 }
254 }
255 if(rc)
256 return rc;
257
258 *request_buf = cifs_buf_get();
259 if (*request_buf == NULL) {
260 /* BB should we add a retry in here if not a writepage? */
261 return -ENOMEM;
262 }
263 /* Although the original thought was we needed the response buf for */
264 /* potential retries of smb operations it turns out we can determine */
265 /* from the mid flags when the request buffer can be resent without */
266 /* having to use a second distinct buffer for the response */
267 *response_buf = *request_buf;
268
269 header_assemble((struct smb_hdr *) *request_buf, smb_command, tcon,
270 wct /*wct */ );
271
272 #ifdef CONFIG_CIFS_STATS
273 if(tcon != NULL) {
274 atomic_inc(&tcon->num_smbs_sent);
275 }
276 #endif /* CONFIG_CIFS_STATS */
277 return rc;
278 }
279
280 static int validate_t2(struct smb_t2_rsp * pSMB)
281 {
282 int rc = -EINVAL;
283 int total_size;
284 char * pBCC;
285
286 /* check for plausible wct, bcc and t2 data and parm sizes */
287 /* check for parm and data offset going beyond end of smb */
288 if(pSMB->hdr.WordCount >= 10) {
289 if((le16_to_cpu(pSMB->t2_rsp.ParameterOffset) <= 1024) &&
290 (le16_to_cpu(pSMB->t2_rsp.DataOffset) <= 1024)) {
291 /* check that bcc is at least as big as parms + data */
292 /* check that bcc is less than negotiated smb buffer */
293 total_size = le16_to_cpu(pSMB->t2_rsp.ParameterCount);
294 if(total_size < 512) {
295 total_size+=le16_to_cpu(pSMB->t2_rsp.DataCount);
296 /* BCC le converted in SendReceive */
297 pBCC = (pSMB->hdr.WordCount * 2) +
298 sizeof(struct smb_hdr) +
299 (char *)pSMB;
300 if((total_size <= (*(u16 *)pBCC)) &&
301 (total_size <
302 CIFSMaxBufSize+MAX_CIFS_HDR_SIZE)) {
303 return 0;
304 }
305
306 }
307 }
308 }
309 cifs_dump_mem("Invalid transact2 SMB: ",(char *)pSMB,
310 sizeof(struct smb_t2_rsp) + 16);
311 return rc;
312 }
313 int
314 CIFSSMBNegotiate(unsigned int xid, struct cifsSesInfo *ses)
315 {
316 NEGOTIATE_REQ *pSMB;
317 NEGOTIATE_RSP *pSMBr;
318 int rc = 0;
319 int bytes_returned;
320 struct TCP_Server_Info * server;
321 u16 count;
322
323 if(ses->server)
324 server = ses->server;
325 else {
326 rc = -EIO;
327 return rc;
328 }
329 rc = smb_init(SMB_COM_NEGOTIATE, 0, NULL /* no tcon yet */ ,
330 (void **) &pSMB, (void **) &pSMBr);
331 if (rc)
332 return rc;
333
334 pSMB->hdr.Flags2 |= SMBFLG2_UNICODE;
335 if (extended_security)
336 pSMB->hdr.Flags2 |= SMBFLG2_EXT_SEC;
337
338 count = strlen(protocols[0].name) + 1;
339 strncpy(pSMB->DialectsArray, protocols[0].name, 30);
340 /* null guaranteed to be at end of source and target buffers anyway */
341
342 pSMB->hdr.smb_buf_length += count;
343 pSMB->ByteCount = cpu_to_le16(count);
344
345 rc = SendReceive(xid, ses, (struct smb_hdr *) pSMB,
346 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
347 if (rc == 0) {
348 server->secMode = pSMBr->SecurityMode;
349 server->secType = NTLM; /* BB override default for
350 NTLMv2 or kerberos v5 */
351 /* one byte - no need to convert this or EncryptionKeyLen
352 from little endian */
353 server->maxReq = le16_to_cpu(pSMBr->MaxMpxCount);
354 /* probably no need to store and check maxvcs */
355 server->maxBuf =
356 min(le32_to_cpu(pSMBr->MaxBufferSize),
357 (__u32) CIFSMaxBufSize + MAX_CIFS_HDR_SIZE);
358 server->maxRw = le32_to_cpu(pSMBr->MaxRawSize);
359 cFYI(0, ("Max buf = %d ", ses->server->maxBuf));
360 GETU32(ses->server->sessid) = le32_to_cpu(pSMBr->SessionKey);
361 server->capabilities = le32_to_cpu(pSMBr->Capabilities);
362 server->timeZone = le16_to_cpu(pSMBr->ServerTimeZone);
363 /* BB with UTC do we ever need to be using srvr timezone? */
364 if (pSMBr->EncryptionKeyLength == CIFS_CRYPTO_KEY_SIZE) {
365 memcpy(server->cryptKey, pSMBr->u.EncryptionKey,
366 CIFS_CRYPTO_KEY_SIZE);
367 } else if ((pSMBr->hdr.Flags2 & SMBFLG2_EXT_SEC)
368 && (pSMBr->EncryptionKeyLength == 0)) {
369 /* decode security blob */
370 } else
371 rc = -EIO;
372
373 /* BB might be helpful to save off the domain of server here */
374
375 if ((pSMBr->hdr.Flags2 & SMBFLG2_EXT_SEC) &&
376 (server->capabilities & CAP_EXTENDED_SECURITY)) {
377 count = pSMBr->ByteCount;
378 if (count < 16)
379 rc = -EIO;
380 else if (count == 16) {
381 server->secType = RawNTLMSSP;
382 if (server->socketUseCount.counter > 1) {
383 if (memcmp
384 (server->server_GUID,
385 pSMBr->u.extended_response.
386 GUID, 16) != 0) {
387 cFYI(1,
388 ("UID of server does not match previous connection to same ip address"));
389 memcpy(server->
390 server_GUID,
391 pSMBr->u.
392 extended_response.
393 GUID, 16);
394 }
395 } else
396 memcpy(server->server_GUID,
397 pSMBr->u.extended_response.
398 GUID, 16);
399 } else {
400 rc = decode_negTokenInit(pSMBr->u.
401 extended_response.
402 SecurityBlob,
403 count - 16,
404 &server->secType);
405 if(rc == 1) {
406 /* BB Need to fill struct for sessetup here */
407 rc = -EOPNOTSUPP;
408 } else {
409 rc = -EINVAL;
410 }
411 }
412 } else
413 server->capabilities &= ~CAP_EXTENDED_SECURITY;
414 if(sign_CIFS_PDUs == FALSE) {
415 if(server->secMode & SECMODE_SIGN_REQUIRED)
416 cERROR(1,
417 ("Server requires /proc/fs/cifs/PacketSigningEnabled"));
418 server->secMode &= ~(SECMODE_SIGN_ENABLED | SECMODE_SIGN_REQUIRED);
419 } else if(sign_CIFS_PDUs == 1) {
420 if((server->secMode & SECMODE_SIGN_REQUIRED) == 0)
421 server->secMode &= ~(SECMODE_SIGN_ENABLED | SECMODE_SIGN_REQUIRED);
422 }
423
424 }
425 if (pSMB)
426 cifs_buf_release(pSMB);
427 return rc;
428 }
429
430 int
431 CIFSSMBTDis(const int xid, struct cifsTconInfo *tcon)
432 {
433 struct smb_hdr *smb_buffer;
434 struct smb_hdr *smb_buffer_response; /* BB removeme BB */
435 int rc = 0;
436 int length;
437
438 cFYI(1, ("In tree disconnect"));
439 /*
440 * If last user of the connection and
441 * connection alive - disconnect it
442 * If this is the last connection on the server session disconnect it
443 * (and inside session disconnect we should check if tcp socket needs
444 * to be freed and kernel thread woken up).
445 */
446 if (tcon)
447 down(&tcon->tconSem);
448 else
449 return -EIO;
450
451 atomic_dec(&tcon->useCount);
452 if (atomic_read(&tcon->useCount) > 0) {
453 up(&tcon->tconSem);
454 return -EBUSY;
455 }
456
457 /* No need to return error on this operation if tid invalidated and
458 closed on server already e.g. due to tcp session crashing */
459 if(tcon->tidStatus == CifsNeedReconnect) {
460 up(&tcon->tconSem);
461 return 0;
462 }
463
464 if((tcon->ses == NULL) || (tcon->ses->server == NULL)) {
465 up(&tcon->tconSem);
466 return -EIO;
467 }
468 rc = small_smb_init(SMB_COM_TREE_DISCONNECT, 0, tcon,
469 (void **)&smb_buffer);
470 if (rc) {
471 up(&tcon->tconSem);
472 return rc;
473 } else {
474 smb_buffer_response = smb_buffer; /* BB removeme BB */
475 }
476 rc = SendReceive(xid, tcon->ses, smb_buffer, smb_buffer_response,
477 &length, 0);
478 if (rc)
479 cFYI(1, ("Tree disconnect failed %d", rc));
480
481 if (smb_buffer)
482 cifs_small_buf_release(smb_buffer);
483 up(&tcon->tconSem);
484
485 /* No need to return error on this operation if tid invalidated and
486 closed on server already e.g. due to tcp session crashing */
487 if (rc == -EAGAIN)
488 rc = 0;
489
490 return rc;
491 }
492
493 int
494 CIFSSMBLogoff(const int xid, struct cifsSesInfo *ses)
495 {
496 struct smb_hdr *smb_buffer_response;
497 LOGOFF_ANDX_REQ *pSMB;
498 int rc = 0;
499 int length;
500
501 cFYI(1, ("In SMBLogoff for session disconnect"));
502 if (ses)
503 down(&ses->sesSem);
504 else
505 return -EIO;
506
507 atomic_dec(&ses->inUse);
508 if (atomic_read(&ses->inUse) > 0) {
509 up(&ses->sesSem);
510 return -EBUSY;
511 }
512 rc = small_smb_init(SMB_COM_LOGOFF_ANDX, 2, NULL, (void **)&pSMB);
513 if (rc) {
514 up(&ses->sesSem);
515 return rc;
516 }
517
518 smb_buffer_response = (struct smb_hdr *)pSMB; /* BB removeme BB */
519
520 if(ses->server) {
521 if(ses->server->secMode &
522 (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED))
523 pSMB->hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE;
524 }
525
526 pSMB->hdr.Uid = ses->Suid;
527
528 pSMB->AndXCommand = 0xFF;
529 rc = SendReceive(xid, ses, (struct smb_hdr *) pSMB,
530 smb_buffer_response, &length, 0);
531 if (ses->server) {
532 atomic_dec(&ses->server->socketUseCount);
533 if (atomic_read(&ses->server->socketUseCount) == 0) {
534 spin_lock(&GlobalMid_Lock);
535 ses->server->tcpStatus = CifsExiting;
536 spin_unlock(&GlobalMid_Lock);
537 rc = -ESHUTDOWN;
538 }
539 }
540 if (pSMB)
541 cifs_small_buf_release(pSMB);
542 up(&ses->sesSem);
543
544 /* if session dead then we do not need to do ulogoff,
545 since server closed smb session, no sense reporting
546 error */
547 if (rc == -EAGAIN)
548 rc = 0;
549 return rc;
550 }
551
552 int
553 CIFSSMBDelFile(const int xid, struct cifsTconInfo *tcon, const char *fileName,
554 const struct nls_table *nls_codepage, int remap)
555 {
556 DELETE_FILE_REQ *pSMB = NULL;
557 DELETE_FILE_RSP *pSMBr = NULL;
558 int rc = 0;
559 int bytes_returned;
560 int name_len;
561
562 DelFileRetry:
563 rc = smb_init(SMB_COM_DELETE, 1, tcon, (void **) &pSMB,
564 (void **) &pSMBr);
565 if (rc)
566 return rc;
567
568 if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
569 name_len =
570 cifsConvertToUCS((__le16 *) pSMB->fileName, fileName,
571 PATH_MAX, nls_codepage, remap);
572 name_len++; /* trailing null */
573 name_len *= 2;
574 } else { /* BB improve check for buffer overruns BB */
575 name_len = strnlen(fileName, PATH_MAX);
576 name_len++; /* trailing null */
577 strncpy(pSMB->fileName, fileName, name_len);
578 }
579 pSMB->SearchAttributes =
580 cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM);
581 pSMB->BufferFormat = 0x04;
582 pSMB->hdr.smb_buf_length += name_len + 1;
583 pSMB->ByteCount = cpu_to_le16(name_len + 1);
584 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
585 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
586 if (rc) {
587 cFYI(1, ("Error in RMFile = %d", rc));
588 }
589 #ifdef CONFIG_CIFS_STATS
590 else {
591 atomic_inc(&tcon->num_deletes);
592 }
593 #endif
594
595 cifs_buf_release(pSMB);
596 if (rc == -EAGAIN)
597 goto DelFileRetry;
598
599 return rc;
600 }
601
602 int
603 CIFSSMBRmDir(const int xid, struct cifsTconInfo *tcon, const char *dirName,
604 const struct nls_table *nls_codepage, int remap)
605 {
606 DELETE_DIRECTORY_REQ *pSMB = NULL;
607 DELETE_DIRECTORY_RSP *pSMBr = NULL;
608 int rc = 0;
609 int bytes_returned;
610 int name_len;
611
612 cFYI(1, ("In CIFSSMBRmDir"));
613 RmDirRetry:
614 rc = smb_init(SMB_COM_DELETE_DIRECTORY, 0, tcon, (void **) &pSMB,
615 (void **) &pSMBr);
616 if (rc)
617 return rc;
618
619 if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
620 name_len = cifsConvertToUCS((__le16 *) pSMB->DirName, dirName,
621 PATH_MAX, nls_codepage, remap);
622 name_len++; /* trailing null */
623 name_len *= 2;
624 } else { /* BB improve check for buffer overruns BB */
625 name_len = strnlen(dirName, PATH_MAX);
626 name_len++; /* trailing null */
627 strncpy(pSMB->DirName, dirName, name_len);
628 }
629
630 pSMB->BufferFormat = 0x04;
631 pSMB->hdr.smb_buf_length += name_len + 1;
632 pSMB->ByteCount = cpu_to_le16(name_len + 1);
633 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
634 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
635 if (rc) {
636 cFYI(1, ("Error in RMDir = %d", rc));
637 }
638 #ifdef CONFIG_CIFS_STATS
639 else {
640 atomic_inc(&tcon->num_rmdirs);
641 }
642 #endif
643
644 cifs_buf_release(pSMB);
645 if (rc == -EAGAIN)
646 goto RmDirRetry;
647 return rc;
648 }
649
650 int
651 CIFSSMBMkDir(const int xid, struct cifsTconInfo *tcon,
652 const char *name, const struct nls_table *nls_codepage, int remap)
653 {
654 int rc = 0;
655 CREATE_DIRECTORY_REQ *pSMB = NULL;
656 CREATE_DIRECTORY_RSP *pSMBr = NULL;
657 int bytes_returned;
658 int name_len;
659
660 cFYI(1, ("In CIFSSMBMkDir"));
661 MkDirRetry:
662 rc = smb_init(SMB_COM_CREATE_DIRECTORY, 0, tcon, (void **) &pSMB,
663 (void **) &pSMBr);
664 if (rc)
665 return rc;
666
667 if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
668 name_len = cifsConvertToUCS((__le16 *) pSMB->DirName, name,
669 PATH_MAX, nls_codepage, remap);
670 name_len++; /* trailing null */
671 name_len *= 2;
672 } else { /* BB improve check for buffer overruns BB */
673 name_len = strnlen(name, PATH_MAX);
674 name_len++; /* trailing null */
675 strncpy(pSMB->DirName, name, name_len);
676 }
677
678 pSMB->BufferFormat = 0x04;
679 pSMB->hdr.smb_buf_length += name_len + 1;
680 pSMB->ByteCount = cpu_to_le16(name_len + 1);
681 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
682 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
683 if (rc) {
684 cFYI(1, ("Error in Mkdir = %d", rc));
685 }
686 #ifdef CONFIG_CIFS_STATS
687 else {
688 atomic_inc(&tcon->num_mkdirs);
689 }
690 #endif
691 cifs_buf_release(pSMB);
692 if (rc == -EAGAIN)
693 goto MkDirRetry;
694 return rc;
695 }
696
697 int
698 CIFSSMBOpen(const int xid, struct cifsTconInfo *tcon,
699 const char *fileName, const int openDisposition,
700 const int access_flags, const int create_options, __u16 * netfid,
701 int *pOplock, FILE_ALL_INFO * pfile_info,
702 const struct nls_table *nls_codepage, int remap)
703 {
704 int rc = -EACCES;
705 OPEN_REQ *pSMB = NULL;
706 OPEN_RSP *pSMBr = NULL;
707 int bytes_returned;
708 int name_len;
709 __u16 count;
710
711 openRetry:
712 rc = smb_init(SMB_COM_NT_CREATE_ANDX, 24, tcon, (void **) &pSMB,
713 (void **) &pSMBr);
714 if (rc)
715 return rc;
716
717 pSMB->AndXCommand = 0xFF; /* none */
718
719 if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
720 count = 1; /* account for one byte pad to word boundary */
721 name_len =
722 cifsConvertToUCS((__le16 *) (pSMB->fileName + 1),
723 fileName, PATH_MAX, nls_codepage, remap);
724 name_len++; /* trailing null */
725 name_len *= 2;
726 pSMB->NameLength = cpu_to_le16(name_len);
727 } else { /* BB improve check for buffer overruns BB */
728 count = 0; /* no pad */
729 name_len = strnlen(fileName, PATH_MAX);
730 name_len++; /* trailing null */
731 pSMB->NameLength = cpu_to_le16(name_len);
732 strncpy(pSMB->fileName, fileName, name_len);
733 }
734 if (*pOplock & REQ_OPLOCK)
735 pSMB->OpenFlags = cpu_to_le32(REQ_OPLOCK);
736 else if (*pOplock & REQ_BATCHOPLOCK) {
737 pSMB->OpenFlags = cpu_to_le32(REQ_BATCHOPLOCK);
738 }
739 pSMB->DesiredAccess = cpu_to_le32(access_flags);
740 pSMB->AllocationSize = 0;
741 pSMB->FileAttributes = cpu_to_le32(ATTR_NORMAL);
742 /* XP does not handle ATTR_POSIX_SEMANTICS */
743 /* but it helps speed up case sensitive checks for other
744 servers such as Samba */
745 if (tcon->ses->capabilities & CAP_UNIX)
746 pSMB->FileAttributes |= cpu_to_le32(ATTR_POSIX_SEMANTICS);
747
748 /* if ((omode & S_IWUGO) == 0)
749 pSMB->FileAttributes |= cpu_to_le32(ATTR_READONLY);*/
750 /* Above line causes problems due to vfs splitting create into two
751 pieces - need to set mode after file created not while it is
752 being created */
753 pSMB->ShareAccess = cpu_to_le32(FILE_SHARE_ALL);
754 pSMB->CreateDisposition = cpu_to_le32(openDisposition);
755 pSMB->CreateOptions = cpu_to_le32(create_options);
756 /* BB Expirement with various impersonation levels and verify */
757 pSMB->ImpersonationLevel = cpu_to_le32(SECURITY_IMPERSONATION);
758 pSMB->SecurityFlags =
759 SECURITY_CONTEXT_TRACKING | SECURITY_EFFECTIVE_ONLY;
760
761 count += name_len;
762 pSMB->hdr.smb_buf_length += count;
763
764 pSMB->ByteCount = cpu_to_le16(count);
765 /* long_op set to 1 to allow for oplock break timeouts */
766 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
767 (struct smb_hdr *) pSMBr, &bytes_returned, 1);
768 if (rc) {
769 cFYI(1, ("Error in Open = %d", rc));
770 } else {
771 *pOplock = pSMBr->OplockLevel; /* 1 byte no need to le_to_cpu */
772 *netfid = pSMBr->Fid; /* cifs fid stays in le */
773 /* Let caller know file was created so we can set the mode. */
774 /* Do we care about the CreateAction in any other cases? */
775 if(cpu_to_le32(FILE_CREATE) == pSMBr->CreateAction)
776 *pOplock |= CIFS_CREATE_ACTION;
777 if(pfile_info) {
778 memcpy((char *)pfile_info,(char *)&pSMBr->CreationTime,
779 36 /* CreationTime to Attributes */);
780 /* the file_info buf is endian converted by caller */
781 pfile_info->AllocationSize = pSMBr->AllocationSize;
782 pfile_info->EndOfFile = pSMBr->EndOfFile;
783 pfile_info->NumberOfLinks = cpu_to_le32(1);
784 }
785
786 #ifdef CONFIG_CIFS_STATS
787 atomic_inc(&tcon->num_opens);
788 #endif
789 }
790 cifs_buf_release(pSMB);
791 if (rc == -EAGAIN)
792 goto openRetry;
793 return rc;
794 }
795
796 /* If no buffer passed in, then caller wants to do the copy
797 as in the case of readpages so the SMB buffer must be
798 freed by the caller */
799
800 int
801 CIFSSMBRead(const int xid, struct cifsTconInfo *tcon,
802 const int netfid, const unsigned int count,
803 const __u64 lseek, unsigned int *nbytes, char **buf)
804 {
805 int rc = -EACCES;
806 READ_REQ *pSMB = NULL;
807 READ_RSP *pSMBr = NULL;
808 char *pReadData = NULL;
809 int bytes_returned;
810
811 cFYI(1,("Reading %d bytes on fid %d",count,netfid));
812
813 *nbytes = 0;
814 rc = smb_init(SMB_COM_READ_ANDX, 12, tcon, (void **) &pSMB,
815 (void **) &pSMBr);
816 if (rc)
817 return rc;
818
819 /* tcon and ses pointer are checked in smb_init */
820 if (tcon->ses->server == NULL)
821 return -ECONNABORTED;
822
823 pSMB->AndXCommand = 0xFF; /* none */
824 pSMB->Fid = netfid;
825 pSMB->OffsetLow = cpu_to_le32(lseek & 0xFFFFFFFF);
826 pSMB->OffsetHigh = cpu_to_le32(lseek >> 32);
827 pSMB->Remaining = 0;
828 pSMB->MaxCount = cpu_to_le16(count & 0xFFFF);
829 pSMB->MaxCountHigh = cpu_to_le32(count >> 16);
830 pSMB->ByteCount = 0; /* no need to do le conversion since it is 0 */
831
832 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
833 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
834 if (rc) {
835 cERROR(1, ("Send error in read = %d", rc));
836 } else {
837 int data_length = le16_to_cpu(pSMBr->DataLengthHigh);
838 data_length = data_length << 16;
839 data_length += le16_to_cpu(pSMBr->DataLength);
840 *nbytes = data_length;
841
842 /*check that DataLength would not go beyond end of SMB */
843 if ((data_length > CIFSMaxBufSize)
844 || (data_length > count)) {
845 cFYI(1,("bad length %d for count %d",data_length,count));
846 rc = -EIO;
847 *nbytes = 0;
848 } else {
849 pReadData =
850 (char *) (&pSMBr->hdr.Protocol) +
851 le16_to_cpu(pSMBr->DataOffset);
852 /* if(rc = copy_to_user(buf, pReadData, data_length)) {
853 cERROR(1,("Faulting on read rc = %d",rc));
854 rc = -EFAULT;
855 }*/ /* can not use copy_to_user when using page cache*/
856 if(*buf)
857 memcpy(*buf,pReadData,data_length);
858 }
859 }
860 if(*buf)
861 cifs_buf_release(pSMB);
862 else
863 *buf = (char *)pSMB;
864
865 /* Note: On -EAGAIN error only caller can retry on handle based calls
866 since file handle passed in no longer valid */
867 return rc;
868 }
869
870 int
871 CIFSSMBWrite(const int xid, struct cifsTconInfo *tcon,
872 const int netfid, const unsigned int count,
873 const __u64 offset, unsigned int *nbytes, const char *buf,
874 const char __user * ubuf, const int long_op)
875 {
876 int rc = -EACCES;
877 WRITE_REQ *pSMB = NULL;
878 WRITE_RSP *pSMBr = NULL;
879 int bytes_returned;
880 __u32 bytes_sent;
881 __u16 byte_count;
882
883 /* cFYI(1,("write at %lld %d bytes",offset,count));*/
884 rc = smb_init(SMB_COM_WRITE_ANDX, 14, tcon, (void **) &pSMB,
885 (void **) &pSMBr);
886 if (rc)
887 return rc;
888 /* tcon and ses pointer are checked in smb_init */
889 if (tcon->ses->server == NULL)
890 return -ECONNABORTED;
891
892 pSMB->AndXCommand = 0xFF; /* none */
893 pSMB->Fid = netfid;
894 pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF);
895 pSMB->OffsetHigh = cpu_to_le32(offset >> 32);
896 pSMB->Reserved = 0xFFFFFFFF;
897 pSMB->WriteMode = 0;
898 pSMB->Remaining = 0;
899
900 /* Can increase buffer size if buffer is big enough in some cases - ie we
901 can send more if LARGE_WRITE_X capability returned by the server and if
902 our buffer is big enough or if we convert to iovecs on socket writes
903 and eliminate the copy to the CIFS buffer */
904 if(tcon->ses->capabilities & CAP_LARGE_WRITE_X) {
905 bytes_sent = min_t(const unsigned int, CIFSMaxBufSize, count);
906 } else {
907 bytes_sent = (tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE)
908 & ~0xFF;
909 }
910
911 if (bytes_sent > count)
912 bytes_sent = count;
913 pSMB->DataOffset =
914 cpu_to_le16(offsetof(struct smb_com_write_req,Data) - 4);
915 if(buf)
916 memcpy(pSMB->Data,buf,bytes_sent);
917 else if(ubuf) {
918 if(copy_from_user(pSMB->Data,ubuf,bytes_sent)) {
919 cifs_buf_release(pSMB);
920 return -EFAULT;
921 }
922 } else {
923 /* No buffer */
924 cifs_buf_release(pSMB);
925 return -EINVAL;
926 }
927
928 byte_count = bytes_sent + 1 /* pad */ ; /* BB fix this for sends > 64K */
929 pSMB->DataLengthLow = cpu_to_le16(bytes_sent & 0xFFFF);
930 pSMB->DataLengthHigh = cpu_to_le16(bytes_sent >> 16);
931 pSMB->hdr.smb_buf_length += bytes_sent+1;
932 pSMB->ByteCount = cpu_to_le16(byte_count);
933
934 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
935 (struct smb_hdr *) pSMBr, &bytes_returned, long_op);
936 if (rc) {
937 cFYI(1, ("Send error in write = %d", rc));
938 *nbytes = 0;
939 } else {
940 *nbytes = le16_to_cpu(pSMBr->CountHigh);
941 *nbytes = (*nbytes) << 16;
942 *nbytes += le16_to_cpu(pSMBr->Count);
943 }
944
945 cifs_buf_release(pSMB);
946
947 /* Note: On -EAGAIN error only caller can retry on handle based calls
948 since file handle passed in no longer valid */
949
950 return rc;
951 }
952
953 #ifdef CONFIG_CIFS_EXPERIMENTAL
954 int CIFSSMBWrite2(const int xid, struct cifsTconInfo *tcon,
955 const int netfid, const unsigned int count,
956 const __u64 offset, unsigned int *nbytes, const char __user *buf,
957 const int long_op)
958 {
959 int rc = -EACCES;
960 WRITE_REQ *pSMB = NULL;
961 WRITE_RSP *pSMBr = NULL;
962 /*int bytes_returned;*/
963 unsigned bytes_sent;
964 __u16 byte_count;
965
966 rc = small_smb_init(SMB_COM_WRITE_ANDX, 14, tcon, (void **) &pSMB);
967
968 if (rc)
969 return rc;
970
971 pSMBr = (WRITE_RSP *)pSMB; /* BB removeme BB */
972
973 /* tcon and ses pointer are checked in smb_init */
974 if (tcon->ses->server == NULL)
975 return -ECONNABORTED;
976
977 pSMB->AndXCommand = 0xFF; /* none */
978 pSMB->Fid = netfid;
979 pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF);
980 pSMB->OffsetHigh = cpu_to_le32(offset >> 32);
981 pSMB->Reserved = 0xFFFFFFFF;
982 pSMB->WriteMode = 0;
983 pSMB->Remaining = 0;
984 bytes_sent = (tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE) & ~0xFF;
985 if (bytes_sent > count)
986 bytes_sent = count;
987 pSMB->DataLengthHigh = 0;
988 pSMB->DataOffset =
989 cpu_to_le16(offsetof(struct smb_com_write_req,Data) - 4);
990
991 byte_count = bytes_sent + 1 /* pad */ ;
992 pSMB->DataLengthLow = cpu_to_le16(bytes_sent);
993 pSMB->DataLengthHigh = 0;
994 pSMB->hdr.smb_buf_length += byte_count;
995 pSMB->ByteCount = cpu_to_le16(byte_count);
996
997 /* rc = SendReceive2(xid, tcon->ses, (struct smb_hdr *) pSMB,
998 (struct smb_hdr *) pSMBr, buf, buflen, &bytes_returned, long_op); */ /* BB fixme BB */
999 if (rc) {
1000 cFYI(1, ("Send error in write2 (large write) = %d", rc));
1001 *nbytes = 0;
1002 } else
1003 *nbytes = le16_to_cpu(pSMBr->Count);
1004
1005 cifs_small_buf_release(pSMB);
1006
1007 /* Note: On -EAGAIN error only caller can retry on handle based calls
1008 since file handle passed in no longer valid */
1009
1010 return rc;
1011 }
1012 #endif /* CIFS_EXPERIMENTAL */
1013
1014 int
1015 CIFSSMBLock(const int xid, struct cifsTconInfo *tcon,
1016 const __u16 smb_file_id, const __u64 len,
1017 const __u64 offset, const __u32 numUnlock,
1018 const __u32 numLock, const __u8 lockType, const int waitFlag)
1019 {
1020 int rc = 0;
1021 LOCK_REQ *pSMB = NULL;
1022 LOCK_RSP *pSMBr = NULL;
1023 int bytes_returned;
1024 int timeout = 0;
1025 __u16 count;
1026
1027 cFYI(1, ("In CIFSSMBLock - timeout %d numLock %d",waitFlag,numLock));
1028 rc = small_smb_init(SMB_COM_LOCKING_ANDX, 8, tcon, (void **) &pSMB);
1029
1030 if (rc)
1031 return rc;
1032
1033 pSMBr = (LOCK_RSP *)pSMB; /* BB removeme BB */
1034
1035 if(lockType == LOCKING_ANDX_OPLOCK_RELEASE) {
1036 timeout = -1; /* no response expected */
1037 pSMB->Timeout = 0;
1038 } else if (waitFlag == TRUE) {
1039 timeout = 3; /* blocking operation, no timeout */
1040 pSMB->Timeout = cpu_to_le32(-1);/* blocking - do not time out */
1041 } else {
1042 pSMB->Timeout = 0;
1043 }
1044
1045 pSMB->NumberOfLocks = cpu_to_le16(numLock);
1046 pSMB->NumberOfUnlocks = cpu_to_le16(numUnlock);
1047 pSMB->LockType = lockType;
1048 pSMB->AndXCommand = 0xFF; /* none */
1049 pSMB->Fid = smb_file_id; /* netfid stays le */
1050
1051 if((numLock != 0) || (numUnlock != 0)) {
1052 pSMB->Locks[0].Pid = cpu_to_le16(current->tgid);
1053 /* BB where to store pid high? */
1054 pSMB->Locks[0].LengthLow = cpu_to_le32((u32)len);
1055 pSMB->Locks[0].LengthHigh = cpu_to_le32((u32)(len>>32));
1056 pSMB->Locks[0].OffsetLow = cpu_to_le32((u32)offset);
1057 pSMB->Locks[0].OffsetHigh = cpu_to_le32((u32)(offset>>32));
1058 count = sizeof(LOCKING_ANDX_RANGE);
1059 } else {
1060 /* oplock break */
1061 count = 0;
1062 }
1063 pSMB->hdr.smb_buf_length += count;
1064 pSMB->ByteCount = cpu_to_le16(count);
1065
1066 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
1067 (struct smb_hdr *) pSMBr, &bytes_returned, timeout);
1068
1069 if (rc) {
1070 cFYI(1, ("Send error in Lock = %d", rc));
1071 }
1072 cifs_small_buf_release(pSMB);
1073
1074 /* Note: On -EAGAIN error only caller can retry on handle based calls
1075 since file handle passed in no longer valid */
1076 return rc;
1077 }
1078
1079 int
1080 CIFSSMBClose(const int xid, struct cifsTconInfo *tcon, int smb_file_id)
1081 {
1082 int rc = 0;
1083 CLOSE_REQ *pSMB = NULL;
1084 CLOSE_RSP *pSMBr = NULL;
1085 int bytes_returned;
1086 cFYI(1, ("In CIFSSMBClose"));
1087
1088 /* do not retry on dead session on close */
1089 rc = small_smb_init(SMB_COM_CLOSE, 3, tcon, (void **) &pSMB);
1090 if(rc == -EAGAIN)
1091 return 0;
1092 if (rc)
1093 return rc;
1094
1095 pSMBr = (CLOSE_RSP *)pSMB; /* BB removeme BB */
1096
1097 pSMB->FileID = (__u16) smb_file_id;
1098 pSMB->LastWriteTime = 0;
1099 pSMB->ByteCount = 0;
1100 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
1101 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
1102 if (rc) {
1103 if(rc!=-EINTR) {
1104 /* EINTR is expected when user ctl-c to kill app */
1105 cERROR(1, ("Send error in Close = %d", rc));
1106 }
1107 }
1108
1109 cifs_small_buf_release(pSMB);
1110
1111 /* Since session is dead, file will be closed on server already */
1112 if(rc == -EAGAIN)
1113 rc = 0;
1114
1115 return rc;
1116 }
1117
1118 int
1119 CIFSSMBRename(const int xid, struct cifsTconInfo *tcon,
1120 const char *fromName, const char *toName,
1121 const struct nls_table *nls_codepage, int remap)
1122 {
1123 int rc = 0;
1124 RENAME_REQ *pSMB = NULL;
1125 RENAME_RSP *pSMBr = NULL;
1126 int bytes_returned;
1127 int name_len, name_len2;
1128 __u16 count;
1129
1130 cFYI(1, ("In CIFSSMBRename"));
1131 renameRetry:
1132 rc = smb_init(SMB_COM_RENAME, 1, tcon, (void **) &pSMB,
1133 (void **) &pSMBr);
1134 if (rc)
1135 return rc;
1136
1137 pSMB->BufferFormat = 0x04;
1138 pSMB->SearchAttributes =
1139 cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM |
1140 ATTR_DIRECTORY);
1141
1142 if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
1143 name_len =
1144 cifsConvertToUCS((__le16 *) pSMB->OldFileName, fromName,
1145 PATH_MAX, nls_codepage, remap);
1146 name_len++; /* trailing null */
1147 name_len *= 2;
1148 pSMB->OldFileName[name_len] = 0x04; /* pad */
1149 /* protocol requires ASCII signature byte on Unicode string */
1150 pSMB->OldFileName[name_len + 1] = 0x00;
1151 name_len2 =
1152 cifsConvertToUCS((__le16 *) &pSMB->OldFileName[name_len + 2],
1153 toName, PATH_MAX, nls_codepage, remap);
1154 name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ;
1155 name_len2 *= 2; /* convert to bytes */
1156 } else { /* BB improve the check for buffer overruns BB */
1157 name_len = strnlen(fromName, PATH_MAX);
1158 name_len++; /* trailing null */
1159 strncpy(pSMB->OldFileName, fromName, name_len);
1160 name_len2 = strnlen(toName, PATH_MAX);
1161 name_len2++; /* trailing null */
1162 pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */
1163 strncpy(&pSMB->OldFileName[name_len + 1], toName, name_len2);
1164 name_len2++; /* trailing null */
1165 name_len2++; /* signature byte */
1166 }
1167
1168 count = 1 /* 1st signature byte */ + name_len + name_len2;
1169 pSMB->hdr.smb_buf_length += count;
1170 pSMB->ByteCount = cpu_to_le16(count);
1171
1172 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
1173 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
1174 if (rc) {
1175 cFYI(1, ("Send error in rename = %d", rc));
1176 }
1177
1178 #ifdef CONFIG_CIFS_STATS
1179 else {
1180 atomic_inc(&tcon->num_renames);
1181 }
1182 #endif
1183
1184 cifs_buf_release(pSMB);
1185
1186 if (rc == -EAGAIN)
1187 goto renameRetry;
1188
1189 return rc;
1190 }
1191
1192 int CIFSSMBRenameOpenFile(const int xid,struct cifsTconInfo *pTcon,
1193 int netfid, char * target_name,
1194 const struct nls_table * nls_codepage, int remap)
1195 {
1196 struct smb_com_transaction2_sfi_req *pSMB = NULL;
1197 struct smb_com_transaction2_sfi_rsp *pSMBr = NULL;
1198 struct set_file_rename * rename_info;
1199 char *data_offset;
1200 char dummy_string[30];
1201 int rc = 0;
1202 int bytes_returned = 0;
1203 int len_of_str;
1204 __u16 params, param_offset, offset, count, byte_count;
1205
1206 cFYI(1, ("Rename to File by handle"));
1207 rc = smb_init(SMB_COM_TRANSACTION2, 15, pTcon, (void **) &pSMB,
1208 (void **) &pSMBr);
1209 if (rc)
1210 return rc;
1211
1212 params = 6;
1213 pSMB->MaxSetupCount = 0;
1214 pSMB->Reserved = 0;
1215 pSMB->Flags = 0;
1216 pSMB->Timeout = 0;
1217 pSMB->Reserved2 = 0;
1218 param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4;
1219 offset = param_offset + params;
1220
1221 data_offset = (char *) (&pSMB->hdr.Protocol) + offset;
1222 rename_info = (struct set_file_rename *) data_offset;
1223 pSMB->MaxParameterCount = cpu_to_le16(2);
1224 pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB PDU from sess */
1225 pSMB->SetupCount = 1;
1226 pSMB->Reserved3 = 0;
1227 pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION);
1228 byte_count = 3 /* pad */ + params;
1229 pSMB->ParameterCount = cpu_to_le16(params);
1230 pSMB->TotalParameterCount = pSMB->ParameterCount;
1231 pSMB->ParameterOffset = cpu_to_le16(param_offset);
1232 pSMB->DataOffset = cpu_to_le16(offset);
1233 /* construct random name ".cifs_tmp<inodenum><mid>" */
1234 rename_info->overwrite = cpu_to_le32(1);
1235 rename_info->root_fid = 0;
1236 /* unicode only call */
1237 if(target_name == NULL) {
1238 sprintf(dummy_string,"cifs%x",pSMB->hdr.Mid);
1239 len_of_str = cifsConvertToUCS((__le16 *)rename_info->target_name,
1240 dummy_string, 24, nls_codepage, remap);
1241 } else {
1242 len_of_str = cifsConvertToUCS((__le16 *)rename_info->target_name,
1243 target_name, PATH_MAX, nls_codepage, remap);
1244 }
1245 rename_info->target_name_len = cpu_to_le32(2 * len_of_str);
1246 count = 12 /* sizeof(struct set_file_rename) */ + (2 * len_of_str) + 2;
1247 byte_count += count;
1248 pSMB->DataCount = cpu_to_le16(count);
1249 pSMB->TotalDataCount = pSMB->DataCount;
1250 pSMB->Fid = netfid;
1251 pSMB->InformationLevel =
1252 cpu_to_le16(SMB_SET_FILE_RENAME_INFORMATION);
1253 pSMB->Reserved4 = 0;
1254 pSMB->hdr.smb_buf_length += byte_count;
1255 pSMB->ByteCount = cpu_to_le16(byte_count);
1256 rc = SendReceive(xid, pTcon->ses, (struct smb_hdr *) pSMB,
1257 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
1258 if (rc) {
1259 cFYI(1,("Send error in Rename (by file handle) = %d", rc));
1260 }
1261 #ifdef CONFIG_CIFS_STATS
1262 else {
1263 atomic_inc(&pTcon->num_t2renames);
1264 }
1265 #endif
1266 cifs_buf_release(pSMB);
1267
1268 /* Note: On -EAGAIN error only caller can retry on handle based calls
1269 since file handle passed in no longer valid */
1270
1271 return rc;
1272 }
1273
1274 int
1275 CIFSSMBCopy(const int xid, struct cifsTconInfo *tcon, const char * fromName,
1276 const __u16 target_tid, const char *toName, const int flags,
1277 const struct nls_table *nls_codepage, int remap)
1278 {
1279 int rc = 0;
1280 COPY_REQ *pSMB = NULL;
1281 COPY_RSP *pSMBr = NULL;
1282 int bytes_returned;
1283 int name_len, name_len2;
1284 __u16 count;
1285
1286 cFYI(1, ("In CIFSSMBCopy"));
1287 copyRetry:
1288 rc = smb_init(SMB_COM_COPY, 1, tcon, (void **) &pSMB,
1289 (void **) &pSMBr);
1290 if (rc)
1291 return rc;
1292
1293 pSMB->BufferFormat = 0x04;
1294 pSMB->Tid2 = target_tid;
1295
1296 pSMB->Flags = cpu_to_le16(flags & COPY_TREE);
1297
1298 if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
1299 name_len = cifsConvertToUCS((__le16 *) pSMB->OldFileName,
1300 fromName, PATH_MAX, nls_codepage,
1301 remap);
1302 name_len++; /* trailing null */
1303 name_len *= 2;
1304 pSMB->OldFileName[name_len] = 0x04; /* pad */
1305 /* protocol requires ASCII signature byte on Unicode string */
1306 pSMB->OldFileName[name_len + 1] = 0x00;
1307 name_len2 = cifsConvertToUCS((__le16 *)&pSMB->OldFileName[name_len + 2],
1308 toName, PATH_MAX, nls_codepage, remap);
1309 name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ;
1310 name_len2 *= 2; /* convert to bytes */
1311 } else { /* BB improve the check for buffer overruns BB */
1312 name_len = strnlen(fromName, PATH_MAX);
1313 name_len++; /* trailing null */
1314 strncpy(pSMB->OldFileName, fromName, name_len);
1315 name_len2 = strnlen(toName, PATH_MAX);
1316 name_len2++; /* trailing null */
1317 pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */
1318 strncpy(&pSMB->OldFileName[name_len + 1], toName, name_len2);
1319 name_len2++; /* trailing null */
1320 name_len2++; /* signature byte */
1321 }
1322
1323 count = 1 /* 1st signature byte */ + name_len + name_len2;
1324 pSMB->hdr.smb_buf_length += count;
1325 pSMB->ByteCount = cpu_to_le16(count);
1326
1327 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
1328 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
1329 if (rc) {
1330 cFYI(1, ("Send error in copy = %d with %d files copied",
1331 rc, le16_to_cpu(pSMBr->CopyCount)));
1332 }
1333 if (pSMB)
1334 cifs_buf_release(pSMB);
1335
1336 if (rc == -EAGAIN)
1337 goto copyRetry;
1338
1339 return rc;
1340 }
1341
1342 int
1343 CIFSUnixCreateSymLink(const int xid, struct cifsTconInfo *tcon,
1344 const char *fromName, const char *toName,
1345 const struct nls_table *nls_codepage)
1346 {
1347 TRANSACTION2_SPI_REQ *pSMB = NULL;
1348 TRANSACTION2_SPI_RSP *pSMBr = NULL;
1349 char *data_offset;
1350 int name_len;
1351 int name_len_target;
1352 int rc = 0;
1353 int bytes_returned = 0;
1354 __u16 params, param_offset, offset, byte_count;
1355
1356 cFYI(1, ("In Symlink Unix style"));
1357 createSymLinkRetry:
1358 rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
1359 (void **) &pSMBr);
1360 if (rc)
1361 return rc;
1362
1363 if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
1364 name_len =
1365 cifs_strtoUCS((wchar_t *) pSMB->FileName, fromName, PATH_MAX
1366 /* find define for this maxpathcomponent */
1367 , nls_codepage);
1368 name_len++; /* trailing null */
1369 name_len *= 2;
1370
1371 } else { /* BB improve the check for buffer overruns BB */
1372 name_len = strnlen(fromName, PATH_MAX);
1373 name_len++; /* trailing null */
1374 strncpy(pSMB->FileName, fromName, name_len);
1375 }
1376 params = 6 + name_len;
1377 pSMB->MaxSetupCount = 0;
1378 pSMB->Reserved = 0;
1379 pSMB->Flags = 0;
1380 pSMB->Timeout = 0;
1381 pSMB->Reserved2 = 0;
1382 param_offset = offsetof(struct smb_com_transaction2_spi_req,
1383 InformationLevel) - 4;
1384 offset = param_offset + params;
1385
1386 data_offset = (char *) (&pSMB->hdr.Protocol) + offset;
1387 if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
1388 name_len_target =
1389 cifs_strtoUCS((wchar_t *) data_offset, toName, PATH_MAX
1390 /* find define for this maxpathcomponent */
1391 , nls_codepage);
1392 name_len_target++; /* trailing null */
1393 name_len_target *= 2;
1394 } else { /* BB improve the check for buffer overruns BB */
1395 name_len_target = strnlen(toName, PATH_MAX);
1396 name_len_target++; /* trailing null */
1397 strncpy(data_offset, toName, name_len_target);
1398 }
1399
1400 pSMB->MaxParameterCount = cpu_to_le16(2);
1401 /* BB find exact max on data count below from sess */
1402 pSMB->MaxDataCount = cpu_to_le16(1000);
1403 pSMB->SetupCount = 1;
1404 pSMB->Reserved3 = 0;
1405 pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION);
1406 byte_count = 3 /* pad */ + params + name_len_target;
1407 pSMB->DataCount = cpu_to_le16(name_len_target);
1408 pSMB->ParameterCount = cpu_to_le16(params);
1409 pSMB->TotalDataCount = pSMB->DataCount;
1410 pSMB->TotalParameterCount = pSMB->ParameterCount;
1411 pSMB->ParameterOffset = cpu_to_le16(param_offset);
1412 pSMB->DataOffset = cpu_to_le16(offset);
1413 pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_LINK);
1414 pSMB->Reserved4 = 0;
1415 pSMB->hdr.smb_buf_length += byte_count;
1416 pSMB->ByteCount = cpu_to_le16(byte_count);
1417 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
1418 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
1419 if (rc) {
1420 cFYI(1,
1421 ("Send error in SetPathInfo (create symlink) = %d",
1422 rc));
1423 }
1424
1425 if (pSMB)
1426 cifs_buf_release(pSMB);
1427
1428 if (rc == -EAGAIN)
1429 goto createSymLinkRetry;
1430
1431 return rc;
1432 }
1433
1434 int
1435 CIFSUnixCreateHardLink(const int xid, struct cifsTconInfo *tcon,
1436 const char *fromName, const char *toName,
1437 const struct nls_table *nls_codepage, int remap)
1438 {
1439 TRANSACTION2_SPI_REQ *pSMB = NULL;
1440 TRANSACTION2_SPI_RSP *pSMBr = NULL;
1441 char *data_offset;
1442 int name_len;
1443 int name_len_target;
1444 int rc = 0;
1445 int bytes_returned = 0;
1446 __u16 params, param_offset, offset, byte_count;
1447
1448 cFYI(1, ("In Create Hard link Unix style"));
1449 createHardLinkRetry:
1450 rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
1451 (void **) &pSMBr);
1452 if (rc)
1453 return rc;
1454
1455 if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
1456 name_len = cifsConvertToUCS((__le16 *) pSMB->FileName, toName,
1457 PATH_MAX, nls_codepage, remap);
1458 name_len++; /* trailing null */
1459 name_len *= 2;
1460
1461 } else { /* BB improve the check for buffer overruns BB */
1462 name_len = strnlen(toName, PATH_MAX);
1463 name_len++; /* trailing null */
1464 strncpy(pSMB->FileName, toName, name_len);
1465 }
1466 params = 6 + name_len;
1467 pSMB->MaxSetupCount = 0;
1468 pSMB->Reserved = 0;
1469 pSMB->Flags = 0;
1470 pSMB->Timeout = 0;
1471 pSMB->Reserved2 = 0;
1472 param_offset = offsetof(struct smb_com_transaction2_spi_req,
1473 InformationLevel) - 4;
1474 offset = param_offset + params;
1475
1476 data_offset = (char *) (&pSMB->hdr.Protocol) + offset;
1477 if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
1478 name_len_target =
1479 cifsConvertToUCS((__le16 *) data_offset, fromName, PATH_MAX,
1480 nls_codepage, remap);
1481 name_len_target++; /* trailing null */
1482 name_len_target *= 2;
1483 } else { /* BB improve the check for buffer overruns BB */
1484 name_len_target = strnlen(fromName, PATH_MAX);
1485 name_len_target++; /* trailing null */
1486 strncpy(data_offset, fromName, name_len_target);
1487 }
1488
1489 pSMB->MaxParameterCount = cpu_to_le16(2);
1490 /* BB find exact max on data count below from sess*/
1491 pSMB->MaxDataCount = cpu_to_le16(1000);
1492 pSMB->SetupCount = 1;
1493 pSMB->Reserved3 = 0;
1494 pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION);
1495 byte_count = 3 /* pad */ + params + name_len_target;
1496 pSMB->ParameterCount = cpu_to_le16(params);
1497 pSMB->TotalParameterCount = pSMB->ParameterCount;
1498 pSMB->DataCount = cpu_to_le16(name_len_target);
1499 pSMB->TotalDataCount = pSMB->DataCount;
1500 pSMB->ParameterOffset = cpu_to_le16(param_offset);
1501 pSMB->DataOffset = cpu_to_le16(offset);
1502 pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_HLINK);
1503 pSMB->Reserved4 = 0;
1504 pSMB->hdr.smb_buf_length += byte_count;
1505 pSMB->ByteCount = cpu_to_le16(byte_count);
1506 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
1507 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
1508 if (rc) {
1509 cFYI(1, ("Send error in SetPathInfo (hard link) = %d", rc));
1510 }
1511
1512 cifs_buf_release(pSMB);
1513 if (rc == -EAGAIN)
1514 goto createHardLinkRetry;
1515
1516 return rc;
1517 }
1518
1519 int
1520 CIFSCreateHardLink(const int xid, struct cifsTconInfo *tcon,
1521 const char *fromName, const char *toName,
1522 const struct nls_table *nls_codepage, int remap)
1523 {
1524 int rc = 0;
1525 NT_RENAME_REQ *pSMB = NULL;
1526 RENAME_RSP *pSMBr = NULL;
1527 int bytes_returned;
1528 int name_len, name_len2;
1529 __u16 count;
1530
1531 cFYI(1, ("In CIFSCreateHardLink"));
1532 winCreateHardLinkRetry:
1533
1534 rc = smb_init(SMB_COM_NT_RENAME, 4, tcon, (void **) &pSMB,
1535 (void **) &pSMBr);
1536 if (rc)
1537 return rc;
1538
1539 pSMB->SearchAttributes =
1540 cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM |
1541 ATTR_DIRECTORY);
1542 pSMB->Flags = cpu_to_le16(CREATE_HARD_LINK);
1543 pSMB->ClusterCount = 0;
1544
1545 pSMB->BufferFormat = 0x04;
1546
1547 if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
1548 name_len =
1549 cifsConvertToUCS((__le16 *) pSMB->OldFileName, fromName,
1550 PATH_MAX, nls_codepage, remap);
1551 name_len++; /* trailing null */
1552 name_len *= 2;
1553 pSMB->OldFileName[name_len] = 0; /* pad */
1554 pSMB->OldFileName[name_len + 1] = 0x04;
1555 name_len2 =
1556 cifsConvertToUCS((__le16 *)&pSMB->OldFileName[name_len + 2],
1557 toName, PATH_MAX, nls_codepage, remap);
1558 name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ;
1559 name_len2 *= 2; /* convert to bytes */
1560 } else { /* BB improve the check for buffer overruns BB */
1561 name_len = strnlen(fromName, PATH_MAX);
1562 name_len++; /* trailing null */
1563 strncpy(pSMB->OldFileName, fromName, name_len);
1564 name_len2 = strnlen(toName, PATH_MAX);
1565 name_len2++; /* trailing null */
1566 pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */
1567 strncpy(&pSMB->OldFileName[name_len + 1], toName, name_len2);
1568 name_len2++; /* trailing null */
1569 name_len2++; /* signature byte */
1570 }
1571
1572 count = 1 /* string type byte */ + name_len + name_len2;
1573 pSMB->hdr.smb_buf_length += count;
1574 pSMB->ByteCount = cpu_to_le16(count);
1575
1576 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
1577 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
1578 if (rc) {
1579 cFYI(1, ("Send error in hard link (NT rename) = %d", rc));
1580 }
1581 cifs_buf_release(pSMB);
1582 if (rc == -EAGAIN)
1583 goto winCreateHardLinkRetry;
1584
1585 return rc;
1586 }
1587
1588 int
1589 CIFSSMBUnixQuerySymLink(const int xid, struct cifsTconInfo *tcon,
1590 const unsigned char *searchName,
1591 char *symlinkinfo, const int buflen,
1592 const struct nls_table *nls_codepage)
1593 {
1594 /* SMB_QUERY_FILE_UNIX_LINK */
1595 TRANSACTION2_QPI_REQ *pSMB = NULL;
1596 TRANSACTION2_QPI_RSP *pSMBr = NULL;
1597 int rc = 0;
1598 int bytes_returned;
1599 int name_len;
1600 __u16 params, byte_count;
1601
1602 cFYI(1, ("In QPathSymLinkInfo (Unix) for path %s", searchName));
1603
1604 querySymLinkRetry:
1605 rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
1606 (void **) &pSMBr);
1607 if (rc)
1608 return rc;
1609
1610 if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
1611 name_len =
1612 cifs_strtoUCS((wchar_t *) pSMB->FileName, searchName, PATH_MAX
1613 /* find define for this maxpathcomponent */
1614 , nls_codepage);
1615 name_len++; /* trailing null */
1616 name_len *= 2;
1617 } else { /* BB improve the check for buffer overruns BB */
1618 name_len = strnlen(searchName, PATH_MAX);
1619 name_len++; /* trailing null */
1620 strncpy(pSMB->FileName, searchName, name_len);
1621 }
1622
1623 params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ;
1624 pSMB->TotalDataCount = 0;
1625 pSMB->MaxParameterCount = cpu_to_le16(2);
1626 /* BB find exact max data count below from sess structure BB */
1627 pSMB->MaxDataCount = cpu_to_le16(4000);
1628 pSMB->MaxSetupCount = 0;
1629 pSMB->Reserved = 0;
1630 pSMB->Flags = 0;
1631 pSMB->Timeout = 0;
1632 pSMB->Reserved2 = 0;
1633 pSMB->ParameterOffset = cpu_to_le16(offsetof(
1634 struct smb_com_transaction2_qpi_req ,InformationLevel) - 4);
1635 pSMB->DataCount = 0;
1636 pSMB->DataOffset = 0;
1637 pSMB->SetupCount = 1;
1638 pSMB->Reserved3 = 0;
1639 pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION);
1640 byte_count = params + 1 /* pad */ ;
1641 pSMB->TotalParameterCount = cpu_to_le16(params);
1642 pSMB->ParameterCount = pSMB->TotalParameterCount;
1643 pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_LINK);
1644 pSMB->Reserved4 = 0;
1645 pSMB->hdr.smb_buf_length += byte_count;
1646 pSMB->ByteCount = cpu_to_le16(byte_count);
1647
1648 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
1649 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
1650 if (rc) {
1651 cFYI(1, ("Send error in QuerySymLinkInfo = %d", rc));
1652 } else {
1653 /* decode response */
1654
1655 rc = validate_t2((struct smb_t2_rsp *)pSMBr);
1656 if (rc || (pSMBr->ByteCount < 2))
1657 /* BB also check enough total bytes returned */
1658 rc = -EIO; /* bad smb */
1659 else {
1660 __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
1661 __u16 count = le16_to_cpu(pSMBr->t2.DataCount);
1662
1663 if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) {
1664 name_len = UniStrnlen((wchar_t *) ((char *)
1665 &pSMBr->hdr.Protocol +data_offset),
1666 min_t(const int, buflen,count) / 2);
1667 /* BB FIXME investigate remapping reserved chars here */
1668 cifs_strfromUCS_le(symlinkinfo,
1669 (wchar_t *) ((char *)&pSMBr->hdr.Protocol +
1670 data_offset),
1671 name_len, nls_codepage);
1672 } else {
1673 strncpy(symlinkinfo,
1674 (char *) &pSMBr->hdr.Protocol +
1675 data_offset,
1676 min_t(const int, buflen, count));
1677 }
1678 symlinkinfo[buflen] = 0;
1679 /* just in case so calling code does not go off the end of buffer */
1680 }
1681 }
1682 cifs_buf_release(pSMB);
1683 if (rc == -EAGAIN)
1684 goto querySymLinkRetry;
1685 return rc;
1686 }
1687
1688 int
1689 CIFSSMBQueryReparseLinkInfo(const int xid, struct cifsTconInfo *tcon,
1690 const unsigned char *searchName,
1691 char *symlinkinfo, const int buflen,__u16 fid,
1692 const struct nls_table *nls_codepage)
1693 {
1694 int rc = 0;
1695 int bytes_returned;
1696 int name_len;
1697 struct smb_com_transaction_ioctl_req * pSMB;
1698 struct smb_com_transaction_ioctl_rsp * pSMBr;
1699
1700 cFYI(1, ("In Windows reparse style QueryLink for path %s", searchName));
1701 rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB,
1702 (void **) &pSMBr);
1703 if (rc)
1704 return rc;
1705
1706 pSMB->TotalParameterCount = 0 ;
1707 pSMB->TotalDataCount = 0;
1708 pSMB->MaxParameterCount = cpu_to_le32(2);
1709 /* BB find exact data count max from sess structure BB */
1710 pSMB->MaxDataCount = cpu_to_le32(4000);
1711 pSMB->MaxSetupCount = 4;
1712 pSMB->Reserved = 0;
1713 pSMB->ParameterOffset = 0;
1714 pSMB->DataCount = 0;
1715 pSMB->DataOffset = 0;
1716 pSMB->SetupCount = 4;
1717 pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_IOCTL);
1718 pSMB->ParameterCount = pSMB->TotalParameterCount;
1719 pSMB->FunctionCode = cpu_to_le32(FSCTL_GET_REPARSE_POINT);
1720 pSMB->IsFsctl = 1; /* FSCTL */
1721 pSMB->IsRootFlag = 0;
1722 pSMB->Fid = fid; /* file handle always le */
1723 pSMB->ByteCount = 0;
1724
1725 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
1726 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
1727 if (rc) {
1728 cFYI(1, ("Send error in QueryReparseLinkInfo = %d", rc));
1729 } else { /* decode response */
1730 __u32 data_offset = le32_to_cpu(pSMBr->DataOffset);
1731 __u32 data_count = le32_to_cpu(pSMBr->DataCount);
1732 if ((pSMBr->ByteCount < 2) || (data_offset > 512))
1733 /* BB also check enough total bytes returned */
1734 rc = -EIO; /* bad smb */
1735 else {
1736 if(data_count && (data_count < 2048)) {
1737 char * end_of_smb = pSMBr->ByteCount + (char *)&pSMBr->ByteCount;
1738
1739 struct reparse_data * reparse_buf = (struct reparse_data *)
1740 ((char *)&pSMBr->hdr.Protocol + data_offset);
1741 if((char*)reparse_buf >= end_of_smb) {
1742 rc = -EIO;
1743 goto qreparse_out;
1744 }
1745 if((reparse_buf->LinkNamesBuf +
1746 reparse_buf->TargetNameOffset +
1747 reparse_buf->TargetNameLen) >
1748 end_of_smb) {
1749 cFYI(1,("reparse buf extended beyond SMB"));
1750 rc = -EIO;
1751 goto qreparse_out;
1752 }
1753
1754 if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) {
1755 name_len = UniStrnlen((wchar_t *)
1756 (reparse_buf->LinkNamesBuf +
1757 reparse_buf->TargetNameOffset),
1758 min(buflen/2, reparse_buf->TargetNameLen / 2));
1759 cifs_strfromUCS_le(symlinkinfo,
1760 (wchar_t *) (reparse_buf->LinkNamesBuf +
1761 reparse_buf->TargetNameOffset),
1762 name_len, nls_codepage);
1763 } else { /* ASCII names */
1764 strncpy(symlinkinfo,reparse_buf->LinkNamesBuf +
1765 reparse_buf->TargetNameOffset,
1766 min_t(const int, buflen, reparse_buf->TargetNameLen));
1767 }
1768 } else {
1769 rc = -EIO;
1770 cFYI(1,("Invalid return data count on get reparse info ioctl"));
1771 }
1772 symlinkinfo[buflen] = 0; /* just in case so the caller
1773 does not go off the end of the buffer */
1774 cFYI(1,("readlink result - %s ",symlinkinfo));
1775 }
1776 }
1777 qreparse_out:
1778 if (pSMB)
1779 cifs_buf_release(pSMB);
1780
1781 /* Note: On -EAGAIN error only caller can retry on handle based calls
1782 since file handle passed in no longer valid */
1783
1784 return rc;
1785 }
1786
1787 #ifdef CONFIG_CIFS_POSIX
1788
1789 /*Convert an Access Control Entry from wire format to local POSIX xattr format*/
1790 static void cifs_convert_ace(posix_acl_xattr_entry * ace, struct cifs_posix_ace * cifs_ace)
1791 {
1792 /* u8 cifs fields do not need le conversion */
1793 ace->e_perm = (__u16)cifs_ace->cifs_e_perm;
1794 ace->e_tag = (__u16)cifs_ace->cifs_e_tag;
1795 ace->e_id = (__u32)le64_to_cpu(cifs_ace->cifs_uid);
1796 /* cFYI(1,("perm %d tag %d id %d",ace->e_perm,ace->e_tag,ace->e_id)); */
1797
1798 return;
1799 }
1800
1801 /* Convert ACL from CIFS POSIX wire format to local Linux POSIX ACL xattr */
1802 static int cifs_copy_posix_acl(char * trgt,char * src, const int buflen,
1803 const int acl_type,const int size_of_data_area)
1804 {
1805 int size = 0;
1806 int i;
1807 __u16 count;
1808 struct cifs_posix_ace * pACE;
1809 struct cifs_posix_acl * cifs_acl = (struct cifs_posix_acl *)src;
1810 posix_acl_xattr_header * local_acl = (posix_acl_xattr_header *)trgt;
1811
1812 if (le16_to_cpu(cifs_acl->version) != CIFS_ACL_VERSION)
1813 return -EOPNOTSUPP;
1814
1815 if(acl_type & ACL_TYPE_ACCESS) {
1816 count = le16_to_cpu(cifs_acl->access_entry_count);
1817 pACE = &cifs_acl->ace_array[0];
1818 size = sizeof(struct cifs_posix_acl);
1819 size += sizeof(struct cifs_posix_ace) * count;
1820 /* check if we would go beyond end of SMB */
1821 if(size_of_data_area < size) {
1822 cFYI(1,("bad CIFS POSIX ACL size %d vs. %d",size_of_data_area,size));
1823 return -EINVAL;
1824 }
1825 } else if(acl_type & ACL_TYPE_DEFAULT) {
1826 count = le16_to_cpu(cifs_acl->access_entry_count);
1827 size = sizeof(struct cifs_posix_acl);
1828 size += sizeof(struct cifs_posix_ace) * count;
1829 /* skip past access ACEs to get to default ACEs */
1830 pACE = &cifs_acl->ace_array[count];
1831 count = le16_to_cpu(cifs_acl->default_entry_count);
1832 size += sizeof(struct cifs_posix_ace) * count;
1833 /* check if we would go beyond end of SMB */
1834 if(size_of_data_area < size)
1835 return -EINVAL;
1836 } else {
1837 /* illegal type */
1838 return -EINVAL;
1839 }
1840
1841 size = posix_acl_xattr_size(count);
1842 if((buflen == 0) || (local_acl == NULL)) {
1843 /* used to query ACL EA size */
1844 } else if(size > buflen) {
1845 return -ERANGE;
1846 } else /* buffer big enough */ {
1847 local_acl->a_version = POSIX_ACL_XATTR_VERSION;
1848 for(i = 0;i < count ;i++) {
1849 cifs_convert_ace(&local_acl->a_entries[i],pACE);
1850 pACE ++;
1851 }
1852 }
1853 return size;
1854 }
1855
1856 static __u16 convert_ace_to_cifs_ace(struct cifs_posix_ace * cifs_ace,
1857 const posix_acl_xattr_entry * local_ace)
1858 {
1859 __u16 rc = 0; /* 0 = ACL converted ok */
1860
1861 cifs_ace->cifs_e_perm = (__u8)cpu_to_le16(local_ace->e_perm);
1862 cifs_ace->cifs_e_tag = (__u8)cpu_to_le16(local_ace->e_tag);
1863 /* BB is there a better way to handle the large uid? */
1864 if(local_ace->e_id == -1) {
1865 /* Probably no need to le convert -1 on any arch but can not hurt */
1866 cifs_ace->cifs_uid = cpu_to_le64(-1);
1867 } else
1868 cifs_ace->cifs_uid = (__u64)cpu_to_le32(local_ace->e_id);
1869 /*cFYI(1,("perm %d tag %d id %d",ace->e_perm,ace->e_tag,ace->e_id));*/
1870 return rc;
1871 }
1872
1873 /* Convert ACL from local Linux POSIX xattr to CIFS POSIX ACL wire format */
1874 static __u16 ACL_to_cifs_posix(char * parm_data,const char * pACL,const int buflen,
1875 const int acl_type)
1876 {
1877 __u16 rc = 0;
1878 struct cifs_posix_acl * cifs_acl = (struct cifs_posix_acl *)parm_data;
1879 posix_acl_xattr_header * local_acl = (posix_acl_xattr_header *)pACL;
1880 int count;
1881 int i;
1882
1883 if((buflen == 0) || (pACL == NULL) || (cifs_acl == NULL))
1884 return 0;
1885
1886 count = posix_acl_xattr_count((size_t)buflen);
1887 cFYI(1,("setting acl with %d entries from buf of length %d and version of %d",
1888 count,buflen,local_acl->a_version));
1889 if(local_acl->a_version != 2) {
1890 cFYI(1,("unknown POSIX ACL version %d",local_acl->a_version));
1891 return 0;
1892 }
1893 cifs_acl->version = cpu_to_le16(1);
1894 if(acl_type == ACL_TYPE_ACCESS)
1895 cifs_acl->access_entry_count = count;
1896 else if(acl_type == ACL_TYPE_DEFAULT)
1897 cifs_acl->default_entry_count = count;
1898 else {
1899 cFYI(1,("unknown ACL type %d",acl_type));
1900 return 0;
1901 }
1902 for(i=0;i<count;i++) {
1903 rc = convert_ace_to_cifs_ace(&cifs_acl->ace_array[i],
1904 &local_acl->a_entries[i]);
1905 if(rc != 0) {
1906 /* ACE not converted */
1907 break;
1908 }
1909 }
1910 if(rc == 0) {
1911 rc = (__u16)(count * sizeof(struct cifs_posix_ace));
1912 rc += sizeof(struct cifs_posix_acl);
1913 /* BB add check to make sure ACL does not overflow SMB */
1914 }
1915 return rc;
1916 }
1917
1918 int
1919 CIFSSMBGetPosixACL(const int xid, struct cifsTconInfo *tcon,
1920 const unsigned char *searchName,
1921 char *acl_inf, const int buflen, const int acl_type,
1922 const struct nls_table *nls_codepage, int remap)
1923 {
1924 /* SMB_QUERY_POSIX_ACL */
1925 TRANSACTION2_QPI_REQ *pSMB = NULL;
1926 TRANSACTION2_QPI_RSP *pSMBr = NULL;
1927 int rc = 0;
1928 int bytes_returned;
1929 int name_len;
1930 __u16 params, byte_count;
1931
1932 cFYI(1, ("In GetPosixACL (Unix) for path %s", searchName));
1933
1934 queryAclRetry:
1935 rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
1936 (void **) &pSMBr);
1937 if (rc)
1938 return rc;
1939
1940 if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
1941 name_len =
1942 cifsConvertToUCS((__le16 *) pSMB->FileName, searchName,
1943 PATH_MAX, nls_codepage, remap);
1944 name_len++; /* trailing null */
1945 name_len *= 2;
1946 pSMB->FileName[name_len] = 0;
1947 pSMB->FileName[name_len+1] = 0;
1948 } else { /* BB improve the check for buffer overruns BB */
1949 name_len = strnlen(searchName, PATH_MAX);
1950 name_len++; /* trailing null */
1951 strncpy(pSMB->FileName, searchName, name_len);
1952 }
1953
1954 params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ;
1955 pSMB->TotalDataCount = 0;
1956 pSMB->MaxParameterCount = cpu_to_le16(2);
1957 /* BB find exact max data count below from sess structure BB */
1958 pSMB->MaxDataCount = cpu_to_le16(4000);
1959 pSMB->MaxSetupCount = 0;
1960 pSMB->Reserved = 0;
1961 pSMB->Flags = 0;
1962 pSMB->Timeout = 0;
1963 pSMB->Reserved2 = 0;
1964 pSMB->ParameterOffset = cpu_to_le16(
1965 offsetof(struct smb_com_transaction2_qpi_req ,InformationLevel) - 4);
1966 pSMB->DataCount = 0;
1967 pSMB->DataOffset = 0;
1968 pSMB->SetupCount = 1;
1969 pSMB->Reserved3 = 0;
1970 pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION);
1971 byte_count = params + 1 /* pad */ ;
1972 pSMB->TotalParameterCount = cpu_to_le16(params);
1973 pSMB->ParameterCount = pSMB->TotalParameterCount;
1974 pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_POSIX_ACL);
1975 pSMB->Reserved4 = 0;
1976 pSMB->hdr.smb_buf_length += byte_count;
1977 pSMB->ByteCount = cpu_to_le16(byte_count);
1978
1979 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
1980 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
1981 if (rc) {
1982 cFYI(1, ("Send error in Query POSIX ACL = %d", rc));
1983 } else {
1984 /* decode response */
1985
1986 rc = validate_t2((struct smb_t2_rsp *)pSMBr);
1987 if (rc || (pSMBr->ByteCount < 2))
1988 /* BB also check enough total bytes returned */
1989 rc = -EIO; /* bad smb */
1990 else {
1991 __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
1992 __u16 count = le16_to_cpu(pSMBr->t2.DataCount);
1993 rc = cifs_copy_posix_acl(acl_inf,
1994 (char *)&pSMBr->hdr.Protocol+data_offset,
1995 buflen,acl_type,count);
1996 }
1997 }
1998 cifs_buf_release(pSMB);
1999 if (rc == -EAGAIN)
2000 goto queryAclRetry;
2001 return rc;
2002 }
2003
2004 int
2005 CIFSSMBSetPosixACL(const int xid, struct cifsTconInfo *tcon,
2006 const unsigned char *fileName,
2007 const char *local_acl, const int buflen,
2008 const int acl_type,
2009 const struct nls_table *nls_codepage, int remap)
2010 {
2011 struct smb_com_transaction2_spi_req *pSMB = NULL;
2012 struct smb_com_transaction2_spi_rsp *pSMBr = NULL;
2013 char *parm_data;
2014 int name_len;
2015 int rc = 0;
2016 int bytes_returned = 0;
2017 __u16 params, byte_count, data_count, param_offset, offset;
2018
2019 cFYI(1, ("In SetPosixACL (Unix) for path %s", fileName));
2020 setAclRetry:
2021 rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
2022 (void **) &pSMBr);
2023 if (rc)
2024 return rc;
2025 if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
2026 name_len =
2027 cifsConvertToUCS((__le16 *) pSMB->FileName, fileName,
2028 PATH_MAX, nls_codepage, remap);
2029 name_len++; /* trailing null */
2030 name_len *= 2;
2031 } else { /* BB improve the check for buffer overruns BB */
2032 name_len = strnlen(fileName, PATH_MAX);
2033 name_len++; /* trailing null */
2034 strncpy(pSMB->FileName, fileName, name_len);
2035 }
2036 params = 6 + name_len;
2037 pSMB->MaxParameterCount = cpu_to_le16(2);
2038 pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB size from sess */
2039 pSMB->MaxSetupCount = 0;
2040 pSMB->Reserved = 0;
2041 pSMB->Flags = 0;
2042 pSMB->Timeout = 0;
2043 pSMB->Reserved2 = 0;
2044 param_offset = offsetof(struct smb_com_transaction2_spi_req,
2045 InformationLevel) - 4;
2046 offset = param_offset + params;
2047 parm_data = ((char *) &pSMB->hdr.Protocol) + offset;
2048 pSMB->ParameterOffset = cpu_to_le16(param_offset);
2049
2050 /* convert to on the wire format for POSIX ACL */
2051 data_count = ACL_to_cifs_posix(parm_data,local_acl,buflen,acl_type);
2052
2053 if(data_count == 0) {
2054 rc = -EOPNOTSUPP;
2055 goto setACLerrorExit;
2056 }
2057 pSMB->DataOffset = cpu_to_le16(offset);
2058 pSMB->SetupCount = 1;
2059 pSMB->Reserved3 = 0;
2060 pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION);
2061 pSMB->InformationLevel = cpu_to_le16(SMB_SET_POSIX_ACL);
2062 byte_count = 3 /* pad */ + params + data_count;
2063 pSMB->DataCount = cpu_to_le16(data_count);
2064 pSMB->TotalDataCount = pSMB->DataCount;
2065 pSMB->ParameterCount = cpu_to_le16(params);
2066 pSMB->TotalParameterCount = pSMB->ParameterCount;
2067 pSMB->Reserved4 = 0;
2068 pSMB->hdr.smb_buf_length += byte_count;
2069 pSMB->ByteCount = cpu_to_le16(byte_count);
2070 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
2071 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
2072 if (rc) {
2073 cFYI(1, ("Set POSIX ACL returned %d", rc));
2074 }
2075
2076 setACLerrorExit:
2077 cifs_buf_release(pSMB);
2078 if (rc == -EAGAIN)
2079 goto setAclRetry;
2080 return rc;
2081 }
2082
2083 /* BB fix tabs in this function FIXME BB */
2084 int
2085 CIFSGetExtAttr(const int xid, struct cifsTconInfo *tcon,
2086 const int netfid, __u64 * pExtAttrBits, __u64 *pMask)
2087 {
2088 int rc = 0;
2089 struct smb_t2_qfi_req *pSMB = NULL;
2090 struct smb_t2_qfi_rsp *pSMBr = NULL;
2091 int bytes_returned;
2092 __u16 params, byte_count;
2093
2094 cFYI(1,("In GetExtAttr"));
2095 if(tcon == NULL)
2096 return -ENODEV;
2097
2098 GetExtAttrRetry:
2099 rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
2100 (void **) &pSMBr);
2101 if (rc)
2102 return rc;
2103
2104 params = 2 /* level */ +2 /* fid */;
2105 pSMB->t2.TotalDataCount = 0;
2106 pSMB->t2.MaxParameterCount = cpu_to_le16(4);
2107 /* BB find exact max data count below from sess structure BB */
2108 pSMB->t2.MaxDataCount = cpu_to_le16(4000);
2109 pSMB->t2.MaxSetupCount = 0;
2110 pSMB->t2.Reserved = 0;
2111 pSMB->t2.Flags = 0;
2112 pSMB->t2.Timeout = 0;
2113 pSMB->t2.Reserved2 = 0;
2114 pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req,
2115 Fid) - 4);
2116 pSMB->t2.DataCount = 0;
2117 pSMB->t2.DataOffset = 0;
2118 pSMB->t2.SetupCount = 1;
2119 pSMB->t2.Reserved3 = 0;
2120 pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION);
2121 byte_count = params + 1 /* pad */ ;
2122 pSMB->t2.TotalParameterCount = cpu_to_le16(params);
2123 pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount;
2124 pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_ATTR_FLAGS);
2125 pSMB->Pad = 0;
2126 pSMB->Fid = netfid;
2127 pSMB->hdr.smb_buf_length += byte_count;
2128 pSMB->t2.ByteCount = cpu_to_le16(byte_count);
2129
2130 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
2131 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
2132 if (rc) {
2133 cFYI(1, ("error %d in GetExtAttr", rc));
2134 } else {
2135 /* decode response */
2136 rc = validate_t2((struct smb_t2_rsp *)pSMBr);
2137 if (rc || (pSMBr->ByteCount < 2))
2138 /* BB also check enough total bytes returned */
2139 /* If rc should we check for EOPNOSUPP and
2140 disable the srvino flag? or in caller? */
2141 rc = -EIO; /* bad smb */
2142 else {
2143 __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
2144 __u16 count = le16_to_cpu(pSMBr->t2.DataCount);
2145 struct file_chattr_info * pfinfo;
2146 /* BB Do we need a cast or hash here ? */
2147 if(count != 16) {
2148 cFYI(1, ("Illegal size ret in GetExtAttr"));
2149 rc = -EIO;
2150 goto GetExtAttrOut;
2151 }
2152 pfinfo = (struct file_chattr_info *)
2153 (data_offset + (char *) &pSMBr->hdr.Protocol);
2154 *pExtAttrBits = le64_to_cpu(pfinfo->mode);
2155 *pMask = le64_to_cpu(pfinfo->mask);
2156 }
2157 }
2158 GetExtAttrOut:
2159 cifs_buf_release(pSMB);
2160 if (rc == -EAGAIN)
2161 goto GetExtAttrRetry;
2162 return rc;
2163 }
2164
2165
2166 #endif /* CONFIG_POSIX */
2167
2168 int
2169 CIFSSMBQPathInfo(const int xid, struct cifsTconInfo *tcon,
2170 const unsigned char *searchName,
2171 FILE_ALL_INFO * pFindData,
2172 const struct nls_table *nls_codepage, int remap)
2173 {
2174 /* level 263 SMB_QUERY_FILE_ALL_INFO */
2175 TRANSACTION2_QPI_REQ *pSMB = NULL;
2176 TRANSACTION2_QPI_RSP *pSMBr = NULL;
2177 int rc = 0;
2178 int bytes_returned;
2179 int name_len;
2180 __u16 params, byte_count;
2181
2182 /* cFYI(1, ("In QPathInfo path %s", searchName)); */
2183 QPathInfoRetry:
2184 rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
2185 (void **) &pSMBr);
2186 if (rc)
2187 return rc;
2188
2189 if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
2190 name_len =
2191 cifsConvertToUCS((__le16 *) pSMB->FileName, searchName,
2192 PATH_MAX, nls_codepage, remap);
2193 name_len++; /* trailing null */
2194 name_len *= 2;
2195 } else { /* BB improve the check for buffer overruns BB */
2196 name_len = strnlen(searchName, PATH_MAX);
2197 name_len++; /* trailing null */
2198 strncpy(pSMB->FileName, searchName, name_len);
2199 }
2200
2201 params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */ ;
2202 pSMB->TotalDataCount = 0;
2203 pSMB->MaxParameterCount = cpu_to_le16(2);
2204 pSMB->MaxDataCount = cpu_to_le16(4000); /* BB find exact max SMB PDU from sess structure BB */
2205 pSMB->MaxSetupCount = 0;
2206 pSMB->Reserved = 0;
2207 pSMB->Flags = 0;
2208 pSMB->Timeout = 0;
2209 pSMB->Reserved2 = 0;
2210 pSMB->ParameterOffset = cpu_to_le16(offsetof(
2211 struct smb_com_transaction2_qpi_req ,InformationLevel) - 4);
2212 pSMB->DataCount = 0;
2213 pSMB->DataOffset = 0;
2214 pSMB->SetupCount = 1;
2215 pSMB->Reserved3 = 0;
2216 pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION);
2217 byte_count = params + 1 /* pad */ ;
2218 pSMB->TotalParameterCount = cpu_to_le16(params);
2219 pSMB->ParameterCount = pSMB->TotalParameterCount;
2220 pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_ALL_INFO);
2221 pSMB->Reserved4 = 0;
2222 pSMB->hdr.smb_buf_length += byte_count;
2223 pSMB->ByteCount = cpu_to_le16(byte_count);
2224
2225 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
2226 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
2227 if (rc) {
2228 cFYI(1, ("Send error in QPathInfo = %d", rc));
2229 } else { /* decode response */
2230 rc = validate_t2((struct smb_t2_rsp *)pSMBr);
2231
2232 if (rc || (pSMBr->ByteCount < 40))
2233 rc = -EIO; /* bad smb */
2234 else if (pFindData){
2235 __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
2236 memcpy((char *) pFindData,
2237 (char *) &pSMBr->hdr.Protocol +
2238 data_offset, sizeof (FILE_ALL_INFO));
2239 } else
2240 rc = -ENOMEM;
2241 }
2242 cifs_buf_release(pSMB);
2243 if (rc == -EAGAIN)
2244 goto QPathInfoRetry;
2245
2246 return rc;
2247 }
2248
2249 int
2250 CIFSSMBUnixQPathInfo(const int xid, struct cifsTconInfo *tcon,
2251 const unsigned char *searchName,
2252 FILE_UNIX_BASIC_INFO * pFindData,
2253 const struct nls_table *nls_codepage, int remap)
2254 {
2255 /* SMB_QUERY_FILE_UNIX_BASIC */
2256 TRANSACTION2_QPI_REQ *pSMB = NULL;
2257 TRANSACTION2_QPI_RSP *pSMBr = NULL;
2258 int rc = 0;
2259 int bytes_returned = 0;
2260 int name_len;
2261 __u16 params, byte_count;
2262
2263 cFYI(1, ("In QPathInfo (Unix) the path %s", searchName));
2264 UnixQPathInfoRetry:
2265 rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
2266 (void **) &pSMBr);
2267 if (rc)
2268 return rc;
2269
2270 if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
2271 name_len =
2272 cifsConvertToUCS((__le16 *) pSMB->FileName, searchName,
2273 PATH_MAX, nls_codepage, remap);
2274 name_len++; /* trailing null */
2275 name_len *= 2;
2276 } else { /* BB improve the check for buffer overruns BB */
2277 name_len = strnlen(searchName, PATH_MAX);
2278 name_len++; /* trailing null */
2279 strncpy(pSMB->FileName, searchName, name_len);
2280 }
2281
2282 params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */ ;
2283 pSMB->TotalDataCount = 0;
2284 pSMB->MaxParameterCount = cpu_to_le16(2);
2285 /* BB find exact max SMB PDU from sess structure BB */
2286 pSMB->MaxDataCount = cpu_to_le16(4000);
2287 pSMB->MaxSetupCount = 0;
2288 pSMB->Reserved = 0;
2289 pSMB->Flags = 0;
2290 pSMB->Timeout = 0;
2291 pSMB->Reserved2 = 0;
2292 pSMB->ParameterOffset = cpu_to_le16(offsetof(
2293 struct smb_com_transaction2_qpi_req ,InformationLevel) - 4);
2294 pSMB->DataCount = 0;
2295 pSMB->DataOffset = 0;
2296 pSMB->SetupCount = 1;
2297 pSMB->Reserved3 = 0;
2298 pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION);
2299 byte_count = params + 1 /* pad */ ;
2300 pSMB->TotalParameterCount = cpu_to_le16(params);
2301 pSMB->ParameterCount = pSMB->TotalParameterCount;
2302 pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC);
2303 pSMB->Reserved4 = 0;
2304 pSMB->hdr.smb_buf_length += byte_count;
2305 pSMB->ByteCount = cpu_to_le16(byte_count);
2306
2307 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
2308 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
2309 if (rc) {
2310 cFYI(1, ("Send error in QPathInfo = %d", rc));
2311 } else { /* decode response */
2312 rc = validate_t2((struct smb_t2_rsp *)pSMBr);
2313
2314 if (rc || (pSMBr->ByteCount < sizeof(FILE_UNIX_BASIC_INFO))) {
2315 rc = -EIO; /* bad smb */
2316 } else {
2317 __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
2318 memcpy((char *) pFindData,
2319 (char *) &pSMBr->hdr.Protocol +
2320 data_offset,
2321 sizeof (FILE_UNIX_BASIC_INFO));
2322 }
2323 }
2324 cifs_buf_release(pSMB);
2325 if (rc == -EAGAIN)
2326 goto UnixQPathInfoRetry;
2327
2328 return rc;
2329 }
2330
2331 #if 0 /* function unused at present */
2332 int CIFSFindSingle(const int xid, struct cifsTconInfo *tcon,
2333 const char *searchName, FILE_ALL_INFO * findData,
2334 const struct nls_table *nls_codepage)
2335 {
2336 /* level 257 SMB_ */
2337 TRANSACTION2_FFIRST_REQ *pSMB = NULL;
2338 TRANSACTION2_FFIRST_RSP *pSMBr = NULL;
2339 int rc = 0;
2340 int bytes_returned;
2341 int name_len;
2342 __u16 params, byte_count;
2343
2344 cFYI(1, ("In FindUnique"));
2345 findUniqueRetry:
2346 rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
2347 (void **) &pSMBr);
2348 if (rc)
2349 return rc;
2350
2351 if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
2352 name_len =
2353 cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, PATH_MAX
2354 /* find define for this maxpathcomponent */
2355 , nls_codepage);
2356 name_len++; /* trailing null */
2357 name_len *= 2;
2358 } else { /* BB improve the check for buffer overruns BB */
2359 name_len = strnlen(searchName, PATH_MAX);
2360 name_len++; /* trailing null */
2361 strncpy(pSMB->FileName, searchName, name_len);
2362 }
2363
2364 params = 12 + name_len /* includes null */ ;
2365 pSMB->TotalDataCount = 0; /* no EAs */
2366 pSMB->MaxParameterCount = cpu_to_le16(2);
2367 pSMB->MaxDataCount = cpu_to_le16(4000); /* BB find exact max SMB PDU from sess structure BB */
2368 pSMB->MaxSetupCount = 0;
2369 pSMB->Reserved = 0;
2370 pSMB->Flags = 0;
2371 pSMB->Timeout = 0;
2372 pSMB->Reserved2 = 0;
2373 pSMB->ParameterOffset = cpu_to_le16(
2374 offsetof(struct smb_com_transaction2_ffirst_req,InformationLevel) - 4);
2375 pSMB->DataCount = 0;
2376 pSMB->DataOffset = 0;
2377 pSMB->SetupCount = 1; /* one byte, no need to le convert */
2378 pSMB->Reserved3 = 0;
2379 pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_FIRST);
2380 byte_count = params + 1 /* pad */ ;
2381 pSMB->TotalParameterCount = cpu_to_le16(params);
2382 pSMB->ParameterCount = pSMB->TotalParameterCount;
2383 pSMB->SearchAttributes =
2384 cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM |
2385 ATTR_DIRECTORY);
2386 pSMB->SearchCount = cpu_to_le16(16); /* BB increase */
2387 pSMB->SearchFlags = cpu_to_le16(1);
2388 pSMB->InformationLevel = cpu_to_le16(SMB_FIND_FILE_DIRECTORY_INFO);
2389 pSMB->SearchStorageType = 0; /* BB what should we set this to? BB */
2390 pSMB->hdr.smb_buf_length += byte_count;
2391 pSMB->ByteCount = cpu_to_le16(byte_count);
2392
2393 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
2394 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
2395
2396 if (rc) {
2397 cFYI(1, ("Send error in FindFileDirInfo = %d", rc));
2398 } else { /* decode response */
2399
2400 /* BB fill in */
2401 }
2402
2403 cifs_buf_release(pSMB);
2404 if (rc == -EAGAIN)
2405 goto findUniqueRetry;
2406
2407 return rc;
2408 }
2409 #endif /* end unused (temporarily) function */
2410
2411 /* xid, tcon, searchName and codepage are input parms, rest are returned */
2412 int
2413 CIFSFindFirst(const int xid, struct cifsTconInfo *tcon,
2414 const char *searchName,
2415 const struct nls_table *nls_codepage,
2416 __u16 * pnetfid,
2417 struct cifs_search_info * psrch_inf, int remap)
2418 {
2419 /* level 257 SMB_ */
2420 TRANSACTION2_FFIRST_REQ *pSMB = NULL;
2421 TRANSACTION2_FFIRST_RSP *pSMBr = NULL;
2422 T2_FFIRST_RSP_PARMS * parms;
2423 int rc = 0;
2424 int bytes_returned = 0;
2425 int name_len;
2426 __u16 params, byte_count;
2427
2428 cFYI(1, ("In FindFirst for %s",searchName));
2429
2430 findFirstRetry:
2431 rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
2432 (void **) &pSMBr);
2433 if (rc)
2434 return rc;
2435
2436 if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
2437 name_len =
2438 cifsConvertToUCS((__le16 *) pSMB->FileName,searchName,
2439 PATH_MAX, nls_codepage, remap);
2440 /* We can not add the asterik earlier in case
2441 it got remapped to 0xF03A as if it were part of the
2442 directory name instead of a wildcard */
2443 name_len *= 2;
2444 pSMB->FileName[name_len] = '\\';
2445 pSMB->FileName[name_len+1] = 0;
2446 pSMB->FileName[name_len+2] = '*';
2447 pSMB->FileName[name_len+3] = 0;
2448 name_len += 4; /* now the trailing null */
2449 pSMB->FileName[name_len] = 0; /* null terminate just in case */
2450 pSMB->FileName[name_len+1] = 0;
2451 name_len += 2;
2452 } else { /* BB add check for overrun of SMB buf BB */
2453 name_len = strnlen(searchName, PATH_MAX);
2454 /* BB fix here and in unicode clause above ie
2455 if(name_len > buffersize-header)
2456 free buffer exit; BB */
2457 strncpy(pSMB->FileName, searchName, name_len);
2458 pSMB->FileName[name_len] = '\\';
2459 pSMB->FileName[name_len+1] = '*';
2460 pSMB->FileName[name_len+2] = 0;
2461 name_len += 3;
2462 }
2463
2464 params = 12 + name_len /* includes null */ ;
2465 pSMB->TotalDataCount = 0; /* no EAs */
2466 pSMB->MaxParameterCount = cpu_to_le16(10);
2467 pSMB->MaxDataCount = cpu_to_le16((tcon->ses->server->maxBuf -
2468 MAX_CIFS_HDR_SIZE) & 0xFFFFFF00);
2469 pSMB->MaxSetupCount = 0;
2470 pSMB->Reserved = 0;
2471 pSMB->Flags = 0;
2472 pSMB->Timeout = 0;
2473 pSMB->Reserved2 = 0;
2474 byte_count = params + 1 /* pad */ ;
2475 pSMB->TotalParameterCount = cpu_to_le16(params);
2476 pSMB->ParameterCount = pSMB->TotalParameterCount;
2477 pSMB->ParameterOffset = cpu_to_le16(
2478 offsetof(struct smb_com_transaction2_ffirst_req, SearchAttributes) - 4);
2479 pSMB->DataCount = 0;
2480 pSMB->DataOffset = 0;
2481 pSMB->SetupCount = 1; /* one byte, no need to make endian neutral */
2482 pSMB->Reserved3 = 0;
2483 pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_FIRST);
2484 pSMB->SearchAttributes =
2485 cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM |
2486 ATTR_DIRECTORY);
2487 pSMB->SearchCount= cpu_to_le16(CIFSMaxBufSize/sizeof(FILE_UNIX_INFO));
2488 pSMB->SearchFlags = cpu_to_le16(CIFS_SEARCH_CLOSE_AT_END |
2489 CIFS_SEARCH_RETURN_RESUME);
2490 pSMB->InformationLevel = cpu_to_le16(psrch_inf->info_level);
2491
2492 /* BB what should we set StorageType to? Does it matter? BB */
2493 pSMB->SearchStorageType = 0;
2494 pSMB->hdr.smb_buf_length += byte_count;
2495 pSMB->ByteCount = cpu_to_le16(byte_count);
2496
2497 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
2498 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
2499
2500 if (rc) {/* BB add logic to retry regular search if Unix search rejected unexpectedly by server */
2501 /* BB Add code to handle unsupported level rc */
2502 cFYI(1, ("Error in FindFirst = %d", rc));
2503
2504 if (pSMB)
2505 cifs_buf_release(pSMB);
2506
2507 /* BB eventually could optimize out free and realloc of buf */
2508 /* for this case */
2509 if (rc == -EAGAIN)
2510 goto findFirstRetry;
2511 } else { /* decode response */
2512 /* BB remember to free buffer if error BB */
2513 rc = validate_t2((struct smb_t2_rsp *)pSMBr);
2514 if(rc == 0) {
2515 if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE)
2516 psrch_inf->unicode = TRUE;
2517 else
2518 psrch_inf->unicode = FALSE;
2519
2520 psrch_inf->ntwrk_buf_start = (char *)pSMBr;
2521 psrch_inf->srch_entries_start =
2522 (char *) &pSMBr->hdr.Protocol +
2523 le16_to_cpu(pSMBr->t2.DataOffset);
2524 parms = (T2_FFIRST_RSP_PARMS *)((char *) &pSMBr->hdr.Protocol +
2525 le16_to_cpu(pSMBr->t2.ParameterOffset));
2526
2527 if(parms->EndofSearch)
2528 psrch_inf->endOfSearch = TRUE;
2529 else
2530 psrch_inf->endOfSearch = FALSE;
2531
2532 psrch_inf->entries_in_buffer = le16_to_cpu(parms->SearchCount);
2533 psrch_inf->index_of_last_entry =
2534 psrch_inf->entries_in_buffer;
2535 *pnetfid = parms->SearchHandle;
2536 } else {
2537 cifs_buf_release(pSMB);
2538 }
2539 }
2540
2541 return rc;
2542 }
2543
2544 int CIFSFindNext(const int xid, struct cifsTconInfo *tcon,
2545 __u16 searchHandle, struct cifs_search_info * psrch_inf)
2546 {
2547 TRANSACTION2_FNEXT_REQ *pSMB = NULL;
2548 TRANSACTION2_FNEXT_RSP *pSMBr = NULL;
2549 T2_FNEXT_RSP_PARMS * parms;
2550 char *response_data;
2551 int rc = 0;
2552 int bytes_returned, name_len;
2553 __u16 params, byte_count;
2554
2555 cFYI(1, ("In FindNext"));
2556
2557 if(psrch_inf->endOfSearch == TRUE)
2558 return -ENOENT;
2559
2560 rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
2561 (void **) &pSMBr);
2562 if (rc)
2563 return rc;
2564
2565 params = 14; /* includes 2 bytes of null string, converted to LE below */
2566 byte_count = 0;
2567 pSMB->TotalDataCount = 0; /* no EAs */
2568 pSMB->MaxParameterCount = cpu_to_le16(8);
2569 pSMB->MaxDataCount =
2570 cpu_to_le16((tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE) & 0xFFFFFF00);
2571 pSMB->MaxSetupCount = 0;
2572 pSMB->Reserved = 0;
2573 pSMB->Flags = 0;
2574 pSMB->Timeout = 0;
2575 pSMB->Reserved2 = 0;
2576 pSMB->ParameterOffset = cpu_to_le16(
2577 offsetof(struct smb_com_transaction2_fnext_req,SearchHandle) - 4);
2578 pSMB->DataCount = 0;
2579 pSMB->DataOffset = 0;
2580 pSMB->SetupCount = 1;
2581 pSMB->Reserved3 = 0;
2582 pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_NEXT);
2583 pSMB->SearchHandle = searchHandle; /* always kept as le */
2584 pSMB->SearchCount =
2585 cpu_to_le16(CIFSMaxBufSize / sizeof (FILE_UNIX_INFO));
2586 /* test for Unix extensions */
2587 /* if (tcon->ses->capabilities & CAP_UNIX) {
2588 pSMB->InformationLevel = cpu_to_le16(SMB_FIND_FILE_UNIX);
2589 psrch_inf->info_level = SMB_FIND_FILE_UNIX;
2590 } else {
2591 pSMB->InformationLevel =
2592 cpu_to_le16(SMB_FIND_FILE_DIRECTORY_INFO);
2593 psrch_inf->info_level = SMB_FIND_FILE_DIRECTORY_INFO;
2594 } */
2595 pSMB->InformationLevel = cpu_to_le16(psrch_inf->info_level);
2596 pSMB->ResumeKey = psrch_inf->resume_key;
2597 pSMB->SearchFlags =
2598 cpu_to_le16(CIFS_SEARCH_CLOSE_AT_END | CIFS_SEARCH_RETURN_RESUME);
2599
2600 name_len = psrch_inf->resume_name_len;
2601 params += name_len;
2602 if(name_len < PATH_MAX) {
2603 memcpy(pSMB->ResumeFileName, psrch_inf->presume_name, name_len);
2604 byte_count += name_len;
2605 } else {
2606 rc = -EINVAL;
2607 goto FNext2_err_exit;
2608 }
2609 byte_count = params + 1 /* pad */ ;
2610 pSMB->TotalParameterCount = cpu_to_le16(params);
2611 pSMB->ParameterCount = pSMB->TotalParameterCount;
2612 pSMB->hdr.smb_buf_length += byte_count;
2613 pSMB->ByteCount = cpu_to_le16(byte_count);
2614
2615 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
2616 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
2617
2618 if (rc) {
2619 if (rc == -EBADF) {
2620 psrch_inf->endOfSearch = TRUE;
2621 rc = 0; /* search probably was closed at end of search above */
2622 } else
2623 cFYI(1, ("FindNext returned = %d", rc));
2624 } else { /* decode response */
2625 rc = validate_t2((struct smb_t2_rsp *)pSMBr);
2626
2627 if(rc == 0) {
2628 /* BB fixme add lock for file (srch_info) struct here */
2629 if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE)
2630 psrch_inf->unicode = TRUE;
2631 else
2632 psrch_inf->unicode = FALSE;
2633 response_data = (char *) &pSMBr->hdr.Protocol +
2634 le16_to_cpu(pSMBr->t2.ParameterOffset);
2635 parms = (T2_FNEXT_RSP_PARMS *)response_data;
2636 response_data = (char *)&pSMBr->hdr.Protocol +
2637 le16_to_cpu(pSMBr->t2.DataOffset);
2638 cifs_buf_release(psrch_inf->ntwrk_buf_start);
2639 psrch_inf->srch_entries_start = response_data;
2640 psrch_inf->ntwrk_buf_start = (char *)pSMB;
2641 if(parms->EndofSearch)
2642 psrch_inf->endOfSearch = TRUE;
2643 else
2644 psrch_inf->endOfSearch = FALSE;
2645
2646 psrch_inf->entries_in_buffer = le16_to_cpu(parms->SearchCount);
2647 psrch_inf->index_of_last_entry +=
2648 psrch_inf->entries_in_buffer;
2649 /* cFYI(1,("fnxt2 entries in buf %d index_of_last %d",psrch_inf->entries_in_buffer,psrch_inf->index_of_last_entry)); */
2650
2651 /* BB fixme add unlock here */
2652 }
2653
2654 }
2655
2656 /* BB On error, should we leave previous search buf (and count and
2657 last entry fields) intact or free the previous one? */
2658
2659 /* Note: On -EAGAIN error only caller can retry on handle based calls
2660 since file handle passed in no longer valid */
2661 FNext2_err_exit:
2662 if (rc != 0)
2663 cifs_buf_release(pSMB);
2664
2665 return rc;
2666 }
2667
2668 int
2669 CIFSFindClose(const int xid, struct cifsTconInfo *tcon, const __u16 searchHandle)
2670 {
2671 int rc = 0;
2672 FINDCLOSE_REQ *pSMB = NULL;
2673 CLOSE_RSP *pSMBr = NULL; /* BB removeme BB */
2674 int bytes_returned;
2675
2676 cFYI(1, ("In CIFSSMBFindClose"));
2677 rc = small_smb_init(SMB_COM_FIND_CLOSE2, 1, tcon, (void **)&pSMB);
2678
2679 /* no sense returning error if session restarted
2680 as file handle has been closed */
2681 if(rc == -EAGAIN)
2682 return 0;
2683 if (rc)
2684 return rc;
2685
2686 pSMBr = (CLOSE_RSP *)pSMB; /* BB removeme BB */
2687 pSMB->FileID = searchHandle;
2688 pSMB->ByteCount = 0;
2689 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
2690 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
2691 if (rc) {
2692 cERROR(1, ("Send error in FindClose = %d", rc));
2693 }
2694 cifs_small_buf_release(pSMB);
2695
2696 /* Since session is dead, search handle closed on server already */
2697 if (rc == -EAGAIN)
2698 rc = 0;
2699
2700 return rc;
2701 }
2702
2703 #ifdef CONFIG_CIFS_EXPERIMENTAL
2704 int
2705 CIFSGetSrvInodeNumber(const int xid, struct cifsTconInfo *tcon,
2706 const unsigned char *searchName,
2707 __u64 * inode_number,
2708 const struct nls_table *nls_codepage, int remap)
2709 {
2710 int rc = 0;
2711 TRANSACTION2_QPI_REQ *pSMB = NULL;
2712 TRANSACTION2_QPI_RSP *pSMBr = NULL;
2713 int name_len, bytes_returned;
2714 __u16 params, byte_count;
2715
2716 cFYI(1,("In GetSrvInodeNum for %s",searchName));
2717 if(tcon == NULL)
2718 return -ENODEV;
2719
2720 GetInodeNumberRetry:
2721 rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
2722 (void **) &pSMBr);
2723 if (rc)
2724 return rc;
2725
2726
2727 if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
2728 name_len =
2729 cifsConvertToUCS((__le16 *) pSMB->FileName, searchName,
2730 PATH_MAX,nls_codepage, remap);
2731 name_len++; /* trailing null */
2732 name_len *= 2;
2733 } else { /* BB improve the check for buffer overruns BB */
2734 name_len = strnlen(searchName, PATH_MAX);
2735 name_len++; /* trailing null */
2736 strncpy(pSMB->FileName, searchName, name_len);
2737 }
2738
2739 params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ;
2740 pSMB->TotalDataCount = 0;
2741 pSMB->MaxParameterCount = cpu_to_le16(2);
2742 /* BB find exact max data count below from sess structure BB */
2743 pSMB->MaxDataCount = cpu_to_le16(4000);
2744 pSMB->MaxSetupCount = 0;
2745 pSMB->Reserved = 0;
2746 pSMB->Flags = 0;
2747 pSMB->Timeout = 0;
2748 pSMB->Reserved2 = 0;
2749 pSMB->ParameterOffset = cpu_to_le16(offsetof(
2750 struct smb_com_transaction2_qpi_req ,InformationLevel) - 4);
2751 pSMB->DataCount = 0;
2752 pSMB->DataOffset = 0;
2753 pSMB->SetupCount = 1;
2754 pSMB->Reserved3 = 0;
2755 pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION);
2756 byte_count = params + 1 /* pad */ ;
2757 pSMB->TotalParameterCount = cpu_to_le16(params);
2758 pSMB->ParameterCount = pSMB->TotalParameterCount;
2759 pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_INTERNAL_INFO);
2760 pSMB->Reserved4 = 0;
2761 pSMB->hdr.smb_buf_length += byte_count;
2762 pSMB->ByteCount = cpu_to_le16(byte_count);
2763
2764 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
2765 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
2766 if (rc) {
2767 cFYI(1, ("error %d in QueryInternalInfo", rc));
2768 } else {
2769 /* decode response */
2770 rc = validate_t2((struct smb_t2_rsp *)pSMBr);
2771 if (rc || (pSMBr->ByteCount < 2))
2772 /* BB also check enough total bytes returned */
2773 /* If rc should we check for EOPNOSUPP and
2774 disable the srvino flag? or in caller? */
2775 rc = -EIO; /* bad smb */
2776 else {
2777 __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
2778 __u16 count = le16_to_cpu(pSMBr->t2.DataCount);
2779 struct file_internal_info * pfinfo;
2780 /* BB Do we need a cast or hash here ? */
2781 if(count < 8) {
2782 cFYI(1, ("Illegal size ret in QryIntrnlInf"));
2783 rc = -EIO;
2784 goto GetInodeNumOut;
2785 }
2786 pfinfo = (struct file_internal_info *)
2787 (data_offset + (char *) &pSMBr->hdr.Protocol);
2788 *inode_number = pfinfo->UniqueId;
2789 }
2790 }
2791 GetInodeNumOut:
2792 cifs_buf_release(pSMB);
2793 if (rc == -EAGAIN)
2794 goto GetInodeNumberRetry;
2795 return rc;
2796 }
2797 #endif /* CIFS_EXPERIMENTAL */
2798
2799 int
2800 CIFSGetDFSRefer(const int xid, struct cifsSesInfo *ses,
2801 const unsigned char *searchName,
2802 unsigned char **targetUNCs,
2803 unsigned int *number_of_UNC_in_array,
2804 const struct nls_table *nls_codepage, int remap)
2805 {
2806 /* TRANS2_GET_DFS_REFERRAL */
2807 TRANSACTION2_GET_DFS_REFER_REQ *pSMB = NULL;
2808 TRANSACTION2_GET_DFS_REFER_RSP *pSMBr = NULL;
2809 struct dfs_referral_level_3 * referrals = NULL;
2810 int rc = 0;
2811 int bytes_returned;
2812 int name_len;
2813 unsigned int i;
2814 char * temp;
2815 __u16 params, byte_count;
2816 *number_of_UNC_in_array = 0;
2817 *targetUNCs = NULL;
2818
2819 cFYI(1, ("In GetDFSRefer the path %s", searchName));
2820 if (ses == NULL)
2821 return -ENODEV;
2822 getDFSRetry:
2823 rc = smb_init(SMB_COM_TRANSACTION2, 15, NULL, (void **) &pSMB,
2824 (void **) &pSMBr);
2825 if (rc)
2826 return rc;
2827
2828 pSMB->hdr.Tid = ses->ipc_tid;
2829 pSMB->hdr.Uid = ses->Suid;
2830 if (ses->capabilities & CAP_STATUS32) {
2831 pSMB->hdr.Flags2 |= SMBFLG2_ERR_STATUS;
2832 }
2833 if (ses->capabilities & CAP_DFS) {
2834 pSMB->hdr.Flags2 |= SMBFLG2_DFS;
2835 }
2836
2837 if (ses->capabilities & CAP_UNICODE) {
2838 pSMB->hdr.Flags2 |= SMBFLG2_UNICODE;
2839 name_len =
2840 cifsConvertToUCS((__le16 *) pSMB->RequestFileName,
2841 searchName, PATH_MAX, nls_codepage, remap);
2842 name_len++; /* trailing null */
2843 name_len *= 2;
2844 } else { /* BB improve the check for buffer overruns BB */
2845 name_len = strnlen(searchName, PATH_MAX);
2846 name_len++; /* trailing null */
2847 strncpy(pSMB->RequestFileName, searchName, name_len);
2848 }
2849
2850 params = 2 /* level */ + name_len /*includes null */ ;
2851 pSMB->TotalDataCount = 0;
2852 pSMB->DataCount = 0;
2853 pSMB->DataOffset = 0;
2854 pSMB->MaxParameterCount = 0;
2855 pSMB->MaxDataCount = cpu_to_le16(4000); /* BB find exact max SMB PDU from sess structure BB */
2856 pSMB->MaxSetupCount = 0;
2857 pSMB->Reserved = 0;
2858 pSMB->Flags = 0;
2859 pSMB->Timeout = 0;
2860 pSMB->Reserved2 = 0;
2861 pSMB->ParameterOffset = cpu_to_le16(offsetof(
2862 struct smb_com_transaction2_get_dfs_refer_req, MaxReferralLevel) - 4);
2863 pSMB->SetupCount = 1;
2864 pSMB->Reserved3 = 0;
2865 pSMB->SubCommand = cpu_to_le16(TRANS2_GET_DFS_REFERRAL);
2866 byte_count = params + 3 /* pad */ ;
2867 pSMB->ParameterCount = cpu_to_le16(params);
2868 pSMB->TotalParameterCount = pSMB->ParameterCount;
2869 pSMB->MaxReferralLevel = cpu_to_le16(3);
2870 pSMB->hdr.smb_buf_length += byte_count;
2871 pSMB->ByteCount = cpu_to_le16(byte_count);
2872
2873 rc = SendReceive(xid, ses, (struct smb_hdr *) pSMB,
2874 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
2875 if (rc) {
2876 cFYI(1, ("Send error in GetDFSRefer = %d", rc));
2877 } else { /* decode response */
2878 /* BB Add logic to parse referrals here */
2879 rc = validate_t2((struct smb_t2_rsp *)pSMBr);
2880
2881 if (rc || (pSMBr->ByteCount < 17)) /* BB also check enough total bytes returned */
2882 rc = -EIO; /* bad smb */
2883 else {
2884 __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
2885 __u16 data_count = le16_to_cpu(pSMBr->t2.DataCount);
2886
2887 cFYI(1,
2888 ("Decoding GetDFSRefer response. BCC: %d Offset %d",
2889 pSMBr->ByteCount, data_offset));
2890 referrals =
2891 (struct dfs_referral_level_3 *)
2892 (8 /* sizeof start of data block */ +
2893 data_offset +
2894 (char *) &pSMBr->hdr.Protocol);
2895 cFYI(1,("num_referrals: %d dfs flags: 0x%x ... \nfor referral one refer size: 0x%x srv type: 0x%x refer flags: 0x%x ttl: 0x%x",
2896 le16_to_cpu(pSMBr->NumberOfReferrals),le16_to_cpu(pSMBr->DFSFlags), le16_to_cpu(referrals->ReferralSize),le16_to_cpu(referrals->ServerType),le16_to_cpu(referrals->ReferralFlags),le16_to_cpu(referrals->TimeToLive)));
2897 /* BB This field is actually two bytes in from start of
2898 data block so we could do safety check that DataBlock
2899 begins at address of pSMBr->NumberOfReferrals */
2900 *number_of_UNC_in_array = le16_to_cpu(pSMBr->NumberOfReferrals);
2901
2902 /* BB Fix below so can return more than one referral */
2903 if(*number_of_UNC_in_array > 1)
2904 *number_of_UNC_in_array = 1;
2905
2906 /* get the length of the strings describing refs */
2907 name_len = 0;
2908 for(i=0;i<*number_of_UNC_in_array;i++) {
2909 /* make sure that DfsPathOffset not past end */
2910 __u16 offset = le16_to_cpu(referrals->DfsPathOffset);
2911 if (offset > data_count) {
2912 /* if invalid referral, stop here and do
2913 not try to copy any more */
2914 *number_of_UNC_in_array = i;
2915 break;
2916 }
2917 temp = ((char *)referrals) + offset;
2918
2919 if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) {
2920 name_len += UniStrnlen((wchar_t *)temp,data_count);
2921 } else {
2922 name_len += strnlen(temp,data_count);
2923 }
2924 referrals++;
2925 /* BB add check that referral pointer does not fall off end PDU */
2926
2927 }
2928 /* BB add check for name_len bigger than bcc */
2929 *targetUNCs =
2930 kmalloc(name_len+1+ (*number_of_UNC_in_array),GFP_KERNEL);
2931 if(*targetUNCs == NULL) {
2932 rc = -ENOMEM;
2933 goto GetDFSRefExit;
2934 }
2935 /* copy the ref strings */
2936 referrals =
2937 (struct dfs_referral_level_3 *)
2938 (8 /* sizeof data hdr */ +
2939 data_offset +
2940 (char *) &pSMBr->hdr.Protocol);
2941
2942 for(i=0;i<*number_of_UNC_in_array;i++) {
2943 temp = ((char *)referrals) + le16_to_cpu(referrals->DfsPathOffset);
2944 if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) {
2945 cifs_strfromUCS_le(*targetUNCs,
2946 (wchar_t *) temp, name_len, nls_codepage);
2947 } else {
2948 strncpy(*targetUNCs,temp,name_len);
2949 }
2950 /* BB update target_uncs pointers */
2951 referrals++;
2952 }
2953 temp = *targetUNCs;
2954 temp[name_len] = 0;
2955 }
2956
2957 }
2958 GetDFSRefExit:
2959 if (pSMB)
2960 cifs_buf_release(pSMB);
2961
2962 if (rc == -EAGAIN)
2963 goto getDFSRetry;
2964
2965 return rc;
2966 }
2967
2968 int
2969 CIFSSMBQFSInfo(const int xid, struct cifsTconInfo *tcon, struct kstatfs *FSData)
2970 {
2971 /* level 0x103 SMB_QUERY_FILE_SYSTEM_INFO */
2972 TRANSACTION2_QFSI_REQ *pSMB = NULL;
2973 TRANSACTION2_QFSI_RSP *pSMBr = NULL;
2974 FILE_SYSTEM_INFO *response_data;
2975 int rc = 0;
2976 int bytes_returned = 0;
2977 __u16 params, byte_count;
2978
2979 cFYI(1, ("In QFSInfo"));
2980 QFSInfoRetry:
2981 rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
2982 (void **) &pSMBr);
2983 if (rc)
2984 return rc;
2985
2986 params = 2; /* level */
2987 pSMB->TotalDataCount = 0;
2988 pSMB->MaxParameterCount = cpu_to_le16(2);
2989 pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find exact max SMB PDU from sess structure BB */
2990 pSMB->MaxSetupCount = 0;
2991 pSMB->Reserved = 0;
2992 pSMB->Flags = 0;
2993 pSMB->Timeout = 0;
2994 pSMB->Reserved2 = 0;
2995 byte_count = params + 1 /* pad */ ;
2996 pSMB->TotalParameterCount = cpu_to_le16(params);
2997 pSMB->ParameterCount = pSMB->TotalParameterCount;
2998 pSMB->ParameterOffset = cpu_to_le16(offsetof(
2999 struct smb_com_transaction2_qfsi_req, InformationLevel) - 4);
3000 pSMB->DataCount = 0;
3001 pSMB->DataOffset = 0;
3002 pSMB->SetupCount = 1;
3003 pSMB->Reserved3 = 0;
3004 pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION);
3005 pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_SIZE_INFO);
3006 pSMB->hdr.smb_buf_length += byte_count;
3007 pSMB->ByteCount = cpu_to_le16(byte_count);
3008
3009 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
3010 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
3011 if (rc) {
3012 cERROR(1, ("Send error in QFSInfo = %d", rc));
3013 } else { /* decode response */
3014 rc = validate_t2((struct smb_t2_rsp *)pSMBr);
3015
3016 if (rc || (pSMBr->ByteCount < 24)) /* BB alsO CHEck enough total bytes returned */
3017 rc = -EIO; /* bad smb */
3018 else {
3019 __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
3020 cFYI(1,
3021 ("Decoding qfsinfo response. BCC: %d Offset %d",
3022 pSMBr->ByteCount, data_offset));
3023
3024 response_data =
3025 (FILE_SYSTEM_INFO
3026 *) (((char *) &pSMBr->hdr.Protocol) +
3027 data_offset);
3028 FSData->f_bsize =
3029 le32_to_cpu(response_data->BytesPerSector) *
3030 le32_to_cpu(response_data->
3031 SectorsPerAllocationUnit);
3032 FSData->f_blocks =
3033 le64_to_cpu(response_data->TotalAllocationUnits);
3034 FSData->f_bfree = FSData->f_bavail =
3035 le64_to_cpu(response_data->FreeAllocationUnits);
3036 cFYI(1,
3037 ("Blocks: %lld Free: %lld Block size %ld",
3038 (unsigned long long)FSData->f_blocks,
3039 (unsigned long long)FSData->f_bfree,
3040 FSData->f_bsize));
3041 }
3042 }
3043 cifs_buf_release(pSMB);
3044
3045 if (rc == -EAGAIN)
3046 goto QFSInfoRetry;
3047
3048 return rc;
3049 }
3050
3051 int
3052 CIFSSMBQFSAttributeInfo(const int xid, struct cifsTconInfo *tcon)
3053 {
3054 /* level 0x105 SMB_QUERY_FILE_SYSTEM_INFO */
3055 TRANSACTION2_QFSI_REQ *pSMB = NULL;
3056 TRANSACTION2_QFSI_RSP *pSMBr = NULL;
3057 FILE_SYSTEM_ATTRIBUTE_INFO *response_data;
3058 int rc = 0;
3059 int bytes_returned = 0;
3060 __u16 params, byte_count;
3061
3062 cFYI(1, ("In QFSAttributeInfo"));
3063 QFSAttributeRetry:
3064 rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
3065 (void **) &pSMBr);
3066 if (rc)
3067 return rc;
3068
3069 params = 2; /* level */
3070 pSMB->TotalDataCount = 0;
3071 pSMB->MaxParameterCount = cpu_to_le16(2);
3072 pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find exact max SMB PDU from sess structure BB */
3073 pSMB->MaxSetupCount = 0;
3074 pSMB->Reserved = 0;
3075 pSMB->Flags = 0;
3076 pSMB->Timeout = 0;
3077 pSMB->Reserved2 = 0;
3078 byte_count = params + 1 /* pad */ ;
3079 pSMB->TotalParameterCount = cpu_to_le16(params);
3080 pSMB->ParameterCount = pSMB->TotalParameterCount;
3081 pSMB->ParameterOffset = cpu_to_le16(offsetof(
3082 struct smb_com_transaction2_qfsi_req, InformationLevel) - 4);
3083 pSMB->DataCount = 0;
3084 pSMB->DataOffset = 0;
3085 pSMB->SetupCount = 1;
3086 pSMB->Reserved3 = 0;
3087 pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION);
3088 pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_ATTRIBUTE_INFO);
3089 pSMB->hdr.smb_buf_length += byte_count;
3090 pSMB->ByteCount = cpu_to_le16(byte_count);
3091
3092 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
3093 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
3094 if (rc) {
3095 cERROR(1, ("Send error in QFSAttributeInfo = %d", rc));
3096 } else { /* decode response */
3097 rc = validate_t2((struct smb_t2_rsp *)pSMBr);
3098
3099 if (rc || (pSMBr->ByteCount < 13)) { /* BB also check enough bytes returned */
3100 rc = -EIO; /* bad smb */
3101 } else {
3102 __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
3103 response_data =
3104 (FILE_SYSTEM_ATTRIBUTE_INFO
3105 *) (((char *) &pSMBr->hdr.Protocol) +
3106 data_offset);
3107 memcpy(&tcon->fsAttrInfo, response_data,
3108 sizeof (FILE_SYSTEM_ATTRIBUTE_INFO));
3109 }
3110 }
3111 cifs_buf_release(pSMB);
3112
3113 if (rc == -EAGAIN)
3114 goto QFSAttributeRetry;
3115
3116 return rc;
3117 }
3118
3119 int
3120 CIFSSMBQFSDeviceInfo(const int xid, struct cifsTconInfo *tcon)
3121 {
3122 /* level 0x104 SMB_QUERY_FILE_SYSTEM_INFO */
3123 TRANSACTION2_QFSI_REQ *pSMB = NULL;
3124 TRANSACTION2_QFSI_RSP *pSMBr = NULL;
3125 FILE_SYSTEM_DEVICE_INFO *response_data;
3126 int rc = 0;
3127 int bytes_returned = 0;
3128 __u16 params, byte_count;
3129
3130 cFYI(1, ("In QFSDeviceInfo"));
3131 QFSDeviceRetry:
3132 rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
3133 (void **) &pSMBr);
3134 if (rc)
3135 return rc;
3136
3137 params = 2; /* level */
3138 pSMB->TotalDataCount = 0;
3139 pSMB->MaxParameterCount = cpu_to_le16(2);
3140 pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find exact max SMB PDU from sess structure BB */
3141 pSMB->MaxSetupCount = 0;
3142 pSMB->Reserved = 0;
3143 pSMB->Flags = 0;
3144 pSMB->Timeout = 0;
3145 pSMB->Reserved2 = 0;
3146 byte_count = params + 1 /* pad */ ;
3147 pSMB->TotalParameterCount = cpu_to_le16(params);
3148 pSMB->ParameterCount = pSMB->TotalParameterCount;
3149 pSMB->ParameterOffset = cpu_to_le16(offsetof(
3150 struct smb_com_transaction2_qfsi_req, InformationLevel) - 4);
3151
3152 pSMB->DataCount = 0;
3153 pSMB->DataOffset = 0;
3154 pSMB->SetupCount = 1;
3155 pSMB->Reserved3 = 0;
3156 pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION);
3157 pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_DEVICE_INFO);
3158 pSMB->hdr.smb_buf_length += byte_count;
3159 pSMB->ByteCount = cpu_to_le16(byte_count);
3160
3161 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
3162 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
3163 if (rc) {
3164 cFYI(1, ("Send error in QFSDeviceInfo = %d", rc));
3165 } else { /* decode response */
3166 rc = validate_t2((struct smb_t2_rsp *)pSMBr);
3167
3168 if (rc || (pSMBr->ByteCount < sizeof (FILE_SYSTEM_DEVICE_INFO)))
3169 rc = -EIO; /* bad smb */
3170 else {
3171 __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
3172 response_data =
3173 (FILE_SYSTEM_DEVICE_INFO *)
3174 (((char *) &pSMBr->hdr.Protocol) +
3175 data_offset);
3176 memcpy(&tcon->fsDevInfo, response_data,
3177 sizeof (FILE_SYSTEM_DEVICE_INFO));
3178 }
3179 }
3180 cifs_buf_release(pSMB);
3181
3182 if (rc == -EAGAIN)
3183 goto QFSDeviceRetry;
3184
3185 return rc;
3186 }
3187
3188 int
3189 CIFSSMBQFSUnixInfo(const int xid, struct cifsTconInfo *tcon)
3190 {
3191 /* level 0x200 SMB_QUERY_CIFS_UNIX_INFO */
3192 TRANSACTION2_QFSI_REQ *pSMB = NULL;
3193 TRANSACTION2_QFSI_RSP *pSMBr = NULL;
3194 FILE_SYSTEM_UNIX_INFO *response_data;
3195 int rc = 0;
3196 int bytes_returned = 0;
3197 __u16 params, byte_count;
3198
3199 cFYI(1, ("In QFSUnixInfo"));
3200 QFSUnixRetry:
3201 rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
3202 (void **) &pSMBr);
3203 if (rc)
3204 return rc;
3205
3206 params = 2; /* level */
3207 pSMB->TotalDataCount = 0;
3208 pSMB->DataCount = 0;
3209 pSMB->DataOffset = 0;
3210 pSMB->MaxParameterCount = cpu_to_le16(2);
3211 pSMB->MaxDataCount = cpu_to_le16(100); /* BB find exact max SMB PDU from sess structure BB */
3212 pSMB->MaxSetupCount = 0;
3213 pSMB->Reserved = 0;
3214 pSMB->Flags = 0;
3215 pSMB->Timeout = 0;
3216 pSMB->Reserved2 = 0;
3217 byte_count = params + 1 /* pad */ ;
3218 pSMB->ParameterCount = cpu_to_le16(params);
3219 pSMB->TotalParameterCount = pSMB->ParameterCount;
3220 pSMB->ParameterOffset = cpu_to_le16(offsetof(struct
3221 smb_com_transaction2_qfsi_req, InformationLevel) - 4);
3222 pSMB->SetupCount = 1;
3223 pSMB->Reserved3 = 0;
3224 pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION);
3225 pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_CIFS_UNIX_INFO);
3226 pSMB->hdr.smb_buf_length += byte_count;
3227 pSMB->ByteCount = cpu_to_le16(byte_count);
3228
3229 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
3230 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
3231 if (rc) {
3232 cERROR(1, ("Send error in QFSUnixInfo = %d", rc));
3233 } else { /* decode response */
3234 rc = validate_t2((struct smb_t2_rsp *)pSMBr);
3235
3236 if (rc || (pSMBr->ByteCount < 13)) {
3237 rc = -EIO; /* bad smb */
3238 } else {
3239 __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
3240 response_data =
3241 (FILE_SYSTEM_UNIX_INFO
3242 *) (((char *) &pSMBr->hdr.Protocol) +
3243 data_offset);
3244 memcpy(&tcon->fsUnixInfo, response_data,
3245 sizeof (FILE_SYSTEM_UNIX_INFO));
3246 }
3247 }
3248 cifs_buf_release(pSMB);
3249
3250 if (rc == -EAGAIN)
3251 goto QFSUnixRetry;
3252
3253
3254 return rc;
3255 }
3256
3257
3258 int
3259 CIFSSMBQFSPosixInfo(const int xid, struct cifsTconInfo *tcon,
3260 struct kstatfs *FSData)
3261 {
3262 /* level 0x201 SMB_QUERY_CIFS_POSIX_INFO */
3263 TRANSACTION2_QFSI_REQ *pSMB = NULL;
3264 TRANSACTION2_QFSI_RSP *pSMBr = NULL;
3265 FILE_SYSTEM_POSIX_INFO *response_data;
3266 int rc = 0;
3267 int bytes_returned = 0;
3268 __u16 params, byte_count;
3269
3270 cFYI(1, ("In QFSPosixInfo"));
3271 QFSPosixRetry:
3272 rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
3273 (void **) &pSMBr);
3274 if (rc)
3275 return rc;
3276
3277 params = 2; /* level */
3278 pSMB->TotalDataCount = 0;
3279 pSMB->DataCount = 0;
3280 pSMB->DataOffset = 0;
3281 pSMB->MaxParameterCount = cpu_to_le16(2);
3282 pSMB->MaxDataCount = cpu_to_le16(100); /* BB find exact max SMB PDU from sess structure BB */
3283 pSMB->MaxSetupCount = 0;
3284 pSMB->Reserved = 0;
3285 pSMB->Flags = 0;
3286 pSMB->Timeout = 0;
3287 pSMB->Reserved2 = 0;
3288 byte_count = params + 1 /* pad */ ;
3289 pSMB->ParameterCount = cpu_to_le16(params);
3290 pSMB->TotalParameterCount = pSMB->ParameterCount;
3291 pSMB->ParameterOffset = cpu_to_le16(offsetof(struct
3292 smb_com_transaction2_qfsi_req, InformationLevel) - 4);
3293 pSMB->SetupCount = 1;
3294 pSMB->Reserved3 = 0;
3295 pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION);
3296 pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_POSIX_FS_INFO);
3297 pSMB->hdr.smb_buf_length += byte_count;
3298 pSMB->ByteCount = cpu_to_le16(byte_count);
3299
3300 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
3301 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
3302 if (rc) {
3303 cFYI(1, ("Send error in QFSUnixInfo = %d", rc));
3304 } else { /* decode response */
3305 rc = validate_t2((struct smb_t2_rsp *)pSMBr);
3306
3307 if (rc || (pSMBr->ByteCount < 13)) {
3308 rc = -EIO; /* bad smb */
3309 } else {
3310 __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
3311 response_data =
3312 (FILE_SYSTEM_POSIX_INFO
3313 *) (((char *) &pSMBr->hdr.Protocol) +
3314 data_offset);
3315 FSData->f_bsize =
3316 le32_to_cpu(response_data->BlockSize);
3317 FSData->f_blocks =
3318 le64_to_cpu(response_data->TotalBlocks);
3319 FSData->f_bfree =
3320 le64_to_cpu(response_data->BlocksAvail);
3321 if(response_data->UserBlocksAvail == -1) {
3322 FSData->f_bavail = FSData->f_bfree;
3323 } else {
3324 FSData->f_bavail =
3325 le64_to_cpu(response_data->UserBlocksAvail);
3326 }
3327 if(response_data->TotalFileNodes != -1)
3328 FSData->f_files =
3329 le64_to_cpu(response_data->TotalFileNodes);
3330 if(response_data->FreeFileNodes != -1)
3331 FSData->f_ffree =
3332 le64_to_cpu(response_data->FreeFileNodes);
3333 }
3334 }
3335 cifs_buf_release(pSMB);
3336
3337 if (rc == -EAGAIN)
3338 goto QFSPosixRetry;
3339
3340 return rc;
3341 }
3342
3343
3344 /* We can not use write of zero bytes trick to
3345 set file size due to need for large file support. Also note that
3346 this SetPathInfo is preferred to SetFileInfo based method in next
3347 routine which is only needed to work around a sharing violation bug
3348 in Samba which this routine can run into */
3349
3350 int
3351 CIFSSMBSetEOF(const int xid, struct cifsTconInfo *tcon, const char *fileName,
3352 __u64 size, int SetAllocation,
3353 const struct nls_table *nls_codepage, int remap)
3354 {
3355 struct smb_com_transaction2_spi_req *pSMB = NULL;
3356 struct smb_com_transaction2_spi_rsp *pSMBr = NULL;
3357 struct file_end_of_file_info *parm_data;
3358 int name_len;
3359 int rc = 0;
3360 int bytes_returned = 0;
3361 __u16 params, byte_count, data_count, param_offset, offset;
3362
3363 cFYI(1, ("In SetEOF"));
3364 SetEOFRetry:
3365 rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
3366 (void **) &pSMBr);
3367 if (rc)
3368 return rc;
3369
3370 if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
3371 name_len =
3372 cifsConvertToUCS((__le16 *) pSMB->FileName, fileName,
3373 PATH_MAX, nls_codepage, remap);
3374 name_len++; /* trailing null */
3375 name_len *= 2;
3376 } else { /* BB improve the check for buffer overruns BB */
3377 name_len = strnlen(fileName, PATH_MAX);
3378 name_len++; /* trailing null */
3379 strncpy(pSMB->FileName, fileName, name_len);
3380 }
3381 params = 6 + name_len;
3382 data_count = sizeof (struct file_end_of_file_info);
3383 pSMB->MaxParameterCount = cpu_to_le16(2);
3384 pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB size from sess */
3385 pSMB->MaxSetupCount = 0;
3386 pSMB->Reserved = 0;
3387 pSMB->Flags = 0;
3388 pSMB->Timeout = 0;
3389 pSMB->Reserved2 = 0;
3390 param_offset = offsetof(struct smb_com_transaction2_spi_req,
3391 InformationLevel) - 4;
3392 offset = param_offset + params;
3393 if(SetAllocation) {
3394 if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU)
3395 pSMB->InformationLevel =
3396 cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO2);
3397 else
3398 pSMB->InformationLevel =
3399 cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO);
3400 } else /* Set File Size */ {
3401 if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU)
3402 pSMB->InformationLevel =
3403 cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO2);
3404 else
3405 pSMB->InformationLevel =
3406 cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO);
3407 }
3408
3409 parm_data =
3410 (struct file_end_of_file_info *) (((char *) &pSMB->hdr.Protocol) +
3411 offset);
3412 pSMB->ParameterOffset = cpu_to_le16(param_offset);
3413 pSMB->DataOffset = cpu_to_le16(offset);
3414 pSMB->SetupCount = 1;
3415 pSMB->Reserved3 = 0;
3416 pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION);
3417 byte_count = 3 /* pad */ + params + data_count;
3418 pSMB->DataCount = cpu_to_le16(data_count);
3419 pSMB->TotalDataCount = pSMB->DataCount;
3420 pSMB->ParameterCount = cpu_to_le16(params);
3421 pSMB->TotalParameterCount = pSMB->ParameterCount;
3422 pSMB->Reserved4 = 0;
3423 pSMB->hdr.smb_buf_length += byte_count;
3424 parm_data->FileSize = cpu_to_le64(size);
3425 pSMB->ByteCount = cpu_to_le16(byte_count);
3426 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
3427 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
3428 if (rc) {
3429 cFYI(1, ("SetPathInfo (file size) returned %d", rc));
3430 }
3431
3432 cifs_buf_release(pSMB);
3433
3434 if (rc == -EAGAIN)
3435 goto SetEOFRetry;
3436
3437 return rc;
3438 }
3439
3440 int
3441 CIFSSMBSetFileSize(const int xid, struct cifsTconInfo *tcon, __u64 size,
3442 __u16 fid, __u32 pid_of_opener, int SetAllocation)
3443 {
3444 struct smb_com_transaction2_sfi_req *pSMB = NULL;
3445 struct smb_com_transaction2_sfi_rsp *pSMBr = NULL;
3446 char *data_offset;
3447 struct file_end_of_file_info *parm_data;
3448 int rc = 0;
3449 int bytes_returned = 0;
3450 __u16 params, param_offset, offset, byte_count, count;
3451
3452 cFYI(1, ("SetFileSize (via SetFileInfo) %lld",
3453 (long long)size));
3454 rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB);
3455
3456 if (rc)
3457 return rc;
3458
3459 pSMBr = (struct smb_com_transaction2_sfi_rsp *)pSMB;
3460
3461 pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener);
3462 pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16));
3463
3464 params = 6;
3465 pSMB->MaxSetupCount = 0;
3466 pSMB->Reserved = 0;
3467 pSMB->Flags = 0;
3468 pSMB->Timeout = 0;
3469 pSMB->Reserved2 = 0;
3470 param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4;
3471 offset = param_offset + params;
3472
3473 data_offset = (char *) (&pSMB->hdr.Protocol) + offset;
3474
3475 count = sizeof(struct file_end_of_file_info);
3476 pSMB->MaxParameterCount = cpu_to_le16(2);
3477 pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB PDU from sess */
3478 pSMB->SetupCount = 1;
3479 pSMB->Reserved3 = 0;
3480 pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION);
3481 byte_count = 3 /* pad */ + params + count;
3482 pSMB->DataCount = cpu_to_le16(count);
3483 pSMB->ParameterCount = cpu_to_le16(params);
3484 pSMB->TotalDataCount = pSMB->DataCount;
3485 pSMB->TotalParameterCount = pSMB->ParameterCount;
3486 pSMB->ParameterOffset = cpu_to_le16(param_offset);
3487 parm_data =
3488 (struct file_end_of_file_info *) (((char *) &pSMB->hdr.Protocol) +
3489 offset);
3490 pSMB->DataOffset = cpu_to_le16(offset);
3491 parm_data->FileSize = cpu_to_le64(size);
3492 pSMB->Fid = fid;
3493 if(SetAllocation) {
3494 if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU)
3495 pSMB->InformationLevel =
3496 cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO2);
3497 else
3498 pSMB->InformationLevel =
3499 cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO);
3500 } else /* Set File Size */ {
3501 if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU)
3502 pSMB->InformationLevel =
3503 cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO2);
3504 else
3505 pSMB->InformationLevel =
3506 cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO);
3507 }
3508 pSMB->Reserved4 = 0;
3509 pSMB->hdr.smb_buf_length += byte_count;
3510 pSMB->ByteCount = cpu_to_le16(byte_count);
3511 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
3512 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
3513 if (rc) {
3514 cFYI(1,
3515 ("Send error in SetFileInfo (SetFileSize) = %d",
3516 rc));
3517 }
3518
3519 if (pSMB)
3520 cifs_small_buf_release(pSMB);
3521
3522 /* Note: On -EAGAIN error only caller can retry on handle based calls
3523 since file handle passed in no longer valid */
3524
3525 return rc;
3526 }
3527
3528 /* Some legacy servers such as NT4 require that the file times be set on
3529 an open handle, rather than by pathname - this is awkward due to
3530 potential access conflicts on the open, but it is unavoidable for these
3531 old servers since the only other choice is to go from 100 nanosecond DCE
3532 time and resort to the original setpathinfo level which takes the ancient
3533 DOS time format with 2 second granularity */
3534 int
3535 CIFSSMBSetFileTimes(const int xid, struct cifsTconInfo *tcon, const FILE_BASIC_INFO * data,
3536 __u16 fid)
3537 {
3538 struct smb_com_transaction2_sfi_req *pSMB = NULL;
3539 struct smb_com_transaction2_sfi_rsp *pSMBr = NULL;
3540 char *data_offset;
3541 int rc = 0;
3542 int bytes_returned = 0;
3543 __u16 params, param_offset, offset, byte_count, count;
3544
3545 cFYI(1, ("Set Times (via SetFileInfo)"));
3546 rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB);
3547
3548 if (rc)
3549 return rc;
3550
3551 pSMBr = (struct smb_com_transaction2_sfi_rsp *)pSMB;
3552
3553 /* At this point there is no need to override the current pid
3554 with the pid of the opener, but that could change if we someday
3555 use an existing handle (rather than opening one on the fly) */
3556 /* pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener);
3557 pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16));*/
3558
3559 params = 6;
3560 pSMB->MaxSetupCount = 0;
3561 pSMB->Reserved = 0;
3562 pSMB->Flags = 0;
3563 pSMB->Timeout = 0;
3564 pSMB->Reserved2 = 0;
3565 param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4;
3566 offset = param_offset + params;
3567
3568 data_offset = (char *) (&pSMB->hdr.Protocol) + offset;
3569
3570 count = sizeof (FILE_BASIC_INFO);
3571 pSMB->MaxParameterCount = cpu_to_le16(2);
3572 pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB PDU from sess */
3573 pSMB->SetupCount = 1;
3574 pSMB->Reserved3 = 0;
3575 pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION);
3576 byte_count = 3 /* pad */ + params + count;
3577 pSMB->DataCount = cpu_to_le16(count);
3578 pSMB->ParameterCount = cpu_to_le16(params);
3579 pSMB->TotalDataCount = pSMB->DataCount;
3580 pSMB->TotalParameterCount = pSMB->ParameterCount;
3581 pSMB->ParameterOffset = cpu_to_le16(param_offset);
3582 pSMB->DataOffset = cpu_to_le16(offset);
3583 pSMB->Fid = fid;
3584 if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU)
3585 pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO2);
3586 else
3587 pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO);
3588 pSMB->Reserved4 = 0;
3589 pSMB->hdr.smb_buf_length += byte_count;
3590 pSMB->ByteCount = cpu_to_le16(byte_count);
3591 memcpy(data_offset,data,sizeof(FILE_BASIC_INFO));
3592 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
3593 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
3594 if (rc) {
3595 cFYI(1,("Send error in Set Time (SetFileInfo) = %d",rc));
3596 }
3597
3598 cifs_small_buf_release(pSMB);
3599
3600 /* Note: On -EAGAIN error only caller can retry on handle based calls
3601 since file handle passed in no longer valid */
3602
3603 return rc;
3604 }
3605
3606
3607 int
3608 CIFSSMBSetTimes(const int xid, struct cifsTconInfo *tcon, const char *fileName,
3609 const FILE_BASIC_INFO * data,
3610 const struct nls_table *nls_codepage, int remap)
3611 {
3612 TRANSACTION2_SPI_REQ *pSMB = NULL;
3613 TRANSACTION2_SPI_RSP *pSMBr = NULL;
3614 int name_len;
3615 int rc = 0;
3616 int bytes_returned = 0;
3617 char *data_offset;
3618 __u16 params, param_offset, offset, byte_count, count;
3619
3620 cFYI(1, ("In SetTimes"));
3621
3622 SetTimesRetry:
3623 rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
3624 (void **) &pSMBr);
3625 if (rc)
3626 return rc;
3627
3628 if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
3629 name_len =
3630 cifsConvertToUCS((__le16 *) pSMB->FileName, fileName,
3631 PATH_MAX, nls_codepage, remap);
3632 name_len++; /* trailing null */
3633 name_len *= 2;
3634 } else { /* BB improve the check for buffer overruns BB */
3635 name_len = strnlen(fileName, PATH_MAX);
3636 name_len++; /* trailing null */
3637 strncpy(pSMB->FileName, fileName, name_len);
3638 }
3639
3640 params = 6 + name_len;
3641 count = sizeof (FILE_BASIC_INFO);
3642 pSMB->MaxParameterCount = cpu_to_le16(2);
3643 pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find exact max SMB PDU from sess structure BB */
3644 pSMB->MaxSetupCount = 0;
3645 pSMB->Reserved = 0;
3646 pSMB->Flags = 0;
3647 pSMB->Timeout = 0;
3648 pSMB->Reserved2 = 0;
3649 param_offset = offsetof(struct smb_com_transaction2_spi_req,
3650 InformationLevel) - 4;
3651 offset = param_offset + params;
3652 data_offset = (char *) (&pSMB->hdr.Protocol) + offset;
3653 pSMB->ParameterOffset = cpu_to_le16(param_offset);
3654 pSMB->DataOffset = cpu_to_le16(offset);
3655 pSMB->SetupCount = 1;
3656 pSMB->Reserved3 = 0;
3657 pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION);
3658 byte_count = 3 /* pad */ + params + count;
3659
3660 pSMB->DataCount = cpu_to_le16(count);
3661 pSMB->ParameterCount = cpu_to_le16(params);
3662 pSMB->TotalDataCount = pSMB->DataCount;
3663 pSMB->TotalParameterCount = pSMB->ParameterCount;
3664 if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU)
3665 pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO2);
3666 else
3667 pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO);
3668 pSMB->Reserved4 = 0;
3669 pSMB->hdr.smb_buf_length += byte_count;
3670 memcpy(data_offset, data, sizeof (FILE_BASIC_INFO));
3671 pSMB->ByteCount = cpu_to_le16(byte_count);
3672 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
3673 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
3674 if (rc) {
3675 cFYI(1, ("SetPathInfo (times) returned %d", rc));
3676 }
3677
3678 cifs_buf_release(pSMB);
3679
3680 if (rc == -EAGAIN)
3681 goto SetTimesRetry;
3682
3683 return rc;
3684 }
3685
3686 /* Can not be used to set time stamps yet (due to old DOS time format) */
3687 /* Can be used to set attributes */
3688 #if 0 /* Possibly not needed - since it turns out that strangely NT4 has a bug
3689 handling it anyway and NT4 was what we thought it would be needed for
3690 Do not delete it until we prove whether needed for Win9x though */
3691 int
3692 CIFSSMBSetAttrLegacy(int xid, struct cifsTconInfo *tcon, char *fileName,
3693 __u16 dos_attrs, const struct nls_table *nls_codepage)
3694 {
3695 SETATTR_REQ *pSMB = NULL;
3696 SETATTR_RSP *pSMBr = NULL;
3697 int rc = 0;
3698 int bytes_returned;
3699 int name_len;
3700
3701 cFYI(1, ("In SetAttrLegacy"));
3702
3703 SetAttrLgcyRetry:
3704 rc = smb_init(SMB_COM_SETATTR, 8, tcon, (void **) &pSMB,
3705 (void **) &pSMBr);
3706 if (rc)
3707 return rc;
3708
3709 if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
3710 name_len =
3711 ConvertToUCS((__le16 *) pSMB->fileName, fileName,
3712 PATH_MAX, nls_codepage);
3713 name_len++; /* trailing null */
3714 name_len *= 2;
3715 } else { /* BB improve the check for buffer overruns BB */
3716 name_len = strnlen(fileName, PATH_MAX);
3717 name_len++; /* trailing null */
3718 strncpy(pSMB->fileName, fileName, name_len);
3719 }
3720 pSMB->attr = cpu_to_le16(dos_attrs);
3721 pSMB->BufferFormat = 0x04;
3722 pSMB->hdr.smb_buf_length += name_len + 1;
3723 pSMB->ByteCount = cpu_to_le16(name_len + 1);
3724 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
3725 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
3726 if (rc) {
3727 cFYI(1, ("Error in LegacySetAttr = %d", rc));
3728 }
3729
3730 cifs_buf_release(pSMB);
3731
3732 if (rc == -EAGAIN)
3733 goto SetAttrLgcyRetry;
3734
3735 return rc;
3736 }
3737 #endif /* temporarily unneeded SetAttr legacy function */
3738
3739 int
3740 CIFSSMBUnixSetPerms(const int xid, struct cifsTconInfo *tcon,
3741 char *fileName, __u64 mode, __u64 uid, __u64 gid,
3742 dev_t device, const struct nls_table *nls_codepage,
3743 int remap)
3744 {
3745 TRANSACTION2_SPI_REQ *pSMB = NULL;
3746 TRANSACTION2_SPI_RSP *pSMBr = NULL;
3747 int name_len;
3748 int rc = 0;
3749 int bytes_returned = 0;
3750 FILE_UNIX_BASIC_INFO *data_offset;
3751 __u16 params, param_offset, offset, count, byte_count;
3752
3753 cFYI(1, ("In SetUID/GID/Mode"));
3754 setPermsRetry:
3755 rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
3756 (void **) &pSMBr);
3757 if (rc)
3758 return rc;
3759
3760 if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
3761 name_len =
3762 cifsConvertToUCS((__le16 *) pSMB->FileName, fileName,
3763 PATH_MAX, nls_codepage, remap);
3764 name_len++; /* trailing null */
3765 name_len *= 2;
3766 } else { /* BB improve the check for buffer overruns BB */
3767 name_len = strnlen(fileName, PATH_MAX);
3768 name_len++; /* trailing null */
3769 strncpy(pSMB->FileName, fileName, name_len);
3770 }
3771
3772 params = 6 + name_len;
3773 count = sizeof (FILE_UNIX_BASIC_INFO);
3774 pSMB->MaxParameterCount = cpu_to_le16(2);
3775 pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find exact max SMB PDU from sess structure BB */
3776 pSMB->MaxSetupCount = 0;
3777 pSMB->Reserved = 0;
3778 pSMB->Flags = 0;
3779 pSMB->Timeout = 0;
3780 pSMB->Reserved2 = 0;
3781 param_offset = offsetof(struct smb_com_transaction2_spi_req,
3782 InformationLevel) - 4;
3783 offset = param_offset + params;
3784 data_offset =
3785 (FILE_UNIX_BASIC_INFO *) ((char *) &pSMB->hdr.Protocol +
3786 offset);
3787 memset(data_offset, 0, count);
3788 pSMB->DataOffset = cpu_to_le16(offset);
3789 pSMB->ParameterOffset = cpu_to_le16(param_offset);
3790 pSMB->SetupCount = 1;
3791 pSMB->Reserved3 = 0;
3792 pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION);
3793 byte_count = 3 /* pad */ + params + count;
3794 pSMB->ParameterCount = cpu_to_le16(params);
3795 pSMB->DataCount = cpu_to_le16(count);
3796 pSMB->TotalParameterCount = pSMB->ParameterCount;
3797 pSMB->TotalDataCount = pSMB->DataCount;
3798 pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_BASIC);
3799 pSMB->Reserved4 = 0;
3800 pSMB->hdr.smb_buf_length += byte_count;
3801 data_offset->Uid = cpu_to_le64(uid);
3802 data_offset->Gid = cpu_to_le64(gid);
3803 /* better to leave device as zero when it is */
3804 data_offset->DevMajor = cpu_to_le64(MAJOR(device));
3805 data_offset->DevMinor = cpu_to_le64(MINOR(device));
3806 data_offset->Permissions = cpu_to_le64(mode);
3807
3808 if(S_ISREG(mode))
3809 data_offset->Type = cpu_to_le32(UNIX_FILE);
3810 else if(S_ISDIR(mode))
3811 data_offset->Type = cpu_to_le32(UNIX_DIR);
3812 else if(S_ISLNK(mode))
3813 data_offset->Type = cpu_to_le32(UNIX_SYMLINK);
3814 else if(S_ISCHR(mode))
3815 data_offset->Type = cpu_to_le32(UNIX_CHARDEV);
3816 else if(S_ISBLK(mode))
3817 data_offset->Type = cpu_to_le32(UNIX_BLOCKDEV);
3818 else if(S_ISFIFO(mode))
3819 data_offset->Type = cpu_to_le32(UNIX_FIFO);
3820 else if(S_ISSOCK(mode))
3821 data_offset->Type = cpu_to_le32(UNIX_SOCKET);
3822
3823
3824 pSMB->ByteCount = cpu_to_le16(byte_count);
3825 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
3826 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
3827 if (rc) {
3828 cFYI(1, ("SetPathInfo (perms) returned %d", rc));
3829 }
3830
3831 if (pSMB)
3832 cifs_buf_release(pSMB);
3833 if (rc == -EAGAIN)
3834 goto setPermsRetry;
3835 return rc;
3836 }
3837
3838 int CIFSSMBNotify(const int xid, struct cifsTconInfo *tcon,
3839 const int notify_subdirs, const __u16 netfid,
3840 __u32 filter, const struct nls_table *nls_codepage)
3841 {
3842 int rc = 0;
3843 struct smb_com_transaction_change_notify_req * pSMB = NULL;
3844 struct smb_com_transaction_change_notify_rsp * pSMBr = NULL;
3845 int bytes_returned;
3846
3847 cFYI(1, ("In CIFSSMBNotify for file handle %d",(int)netfid));
3848 rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB,
3849 (void **) &pSMBr);
3850 if (rc)
3851 return rc;
3852
3853 pSMB->TotalParameterCount = 0 ;
3854 pSMB->TotalDataCount = 0;
3855 pSMB->MaxParameterCount = cpu_to_le32(2);
3856 /* BB find exact data count max from sess structure BB */
3857 pSMB->MaxDataCount = 0; /* same in little endian or be */
3858 pSMB->MaxSetupCount = 4;
3859 pSMB->Reserved = 0;
3860 pSMB->ParameterOffset = 0;
3861 pSMB->DataCount = 0;
3862 pSMB->DataOffset = 0;
3863 pSMB->SetupCount = 4; /* single byte does not need le conversion */
3864 pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_NOTIFY_CHANGE);
3865 pSMB->ParameterCount = pSMB->TotalParameterCount;
3866 if(notify_subdirs)
3867 pSMB->WatchTree = 1; /* one byte - no le conversion needed */
3868 pSMB->Reserved2 = 0;
3869 pSMB->CompletionFilter = cpu_to_le32(filter);
3870 pSMB->Fid = netfid; /* file handle always le */
3871 pSMB->ByteCount = 0;
3872
3873 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
3874 (struct smb_hdr *) pSMBr, &bytes_returned, -1);
3875 if (rc) {
3876 cFYI(1, ("Error in Notify = %d", rc));
3877 }
3878 cifs_buf_release(pSMB);
3879 return rc;
3880 }
3881 #ifdef CONFIG_CIFS_XATTR
3882 ssize_t
3883 CIFSSMBQAllEAs(const int xid, struct cifsTconInfo *tcon,
3884 const unsigned char *searchName,
3885 char * EAData, size_t buf_size,
3886 const struct nls_table *nls_codepage, int remap)
3887 {
3888 /* BB assumes one setup word */
3889 TRANSACTION2_QPI_REQ *pSMB = NULL;
3890 TRANSACTION2_QPI_RSP *pSMBr = NULL;
3891 int rc = 0;
3892 int bytes_returned;
3893 int name_len;
3894 struct fea * temp_fea;
3895 char * temp_ptr;
3896 __u16 params, byte_count;
3897
3898 cFYI(1, ("In Query All EAs path %s", searchName));
3899 QAllEAsRetry:
3900 rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
3901 (void **) &pSMBr);
3902 if (rc)
3903 return rc;
3904
3905 if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
3906 name_len =
3907 cifsConvertToUCS((__le16 *) pSMB->FileName, searchName,
3908 PATH_MAX, nls_codepage, remap);
3909 name_len++; /* trailing null */
3910 name_len *= 2;
3911 } else { /* BB improve the check for buffer overruns BB */
3912 name_len = strnlen(searchName, PATH_MAX);
3913 name_len++; /* trailing null */
3914 strncpy(pSMB->FileName, searchName, name_len);
3915 }
3916
3917 params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */ ;
3918 pSMB->TotalDataCount = 0;
3919 pSMB->MaxParameterCount = cpu_to_le16(2);
3920 pSMB->MaxDataCount = cpu_to_le16(4000); /* BB find exact max SMB PDU from sess structure BB */
3921 pSMB->MaxSetupCount = 0;
3922 pSMB->Reserved = 0;
3923 pSMB->Flags = 0;
3924 pSMB->Timeout = 0;
3925 pSMB->Reserved2 = 0;
3926 pSMB->ParameterOffset = cpu_to_le16(offsetof(
3927 struct smb_com_transaction2_qpi_req ,InformationLevel) - 4);
3928 pSMB->DataCount = 0;
3929 pSMB->DataOffset = 0;
3930 pSMB->SetupCount = 1;
3931 pSMB->Reserved3 = 0;
3932 pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION);
3933 byte_count = params + 1 /* pad */ ;
3934 pSMB->TotalParameterCount = cpu_to_le16(params);
3935 pSMB->ParameterCount = pSMB->TotalParameterCount;
3936 pSMB->InformationLevel = cpu_to_le16(SMB_INFO_QUERY_ALL_EAS);
3937 pSMB->Reserved4 = 0;
3938 pSMB->hdr.smb_buf_length += byte_count;
3939 pSMB->ByteCount = cpu_to_le16(byte_count);
3940
3941 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
3942 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
3943 if (rc) {
3944 cFYI(1, ("Send error in QueryAllEAs = %d", rc));
3945 } else { /* decode response */
3946 rc = validate_t2((struct smb_t2_rsp *)pSMBr);
3947
3948 /* BB also check enough total bytes returned */
3949 /* BB we need to improve the validity checking
3950 of these trans2 responses */
3951 if (rc || (pSMBr->ByteCount < 4))
3952 rc = -EIO; /* bad smb */
3953 /* else if (pFindData){
3954 memcpy((char *) pFindData,
3955 (char *) &pSMBr->hdr.Protocol +
3956 data_offset, kl);
3957 }*/ else {
3958 /* check that length of list is not more than bcc */
3959 /* check that each entry does not go beyond length
3960 of list */
3961 /* check that each element of each entry does not
3962 go beyond end of list */
3963 __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
3964 struct fealist * ea_response_data;
3965 rc = 0;
3966 /* validate_trans2_offsets() */
3967 /* BB to check if(start of smb + data_offset > &bcc+ bcc)*/
3968 ea_response_data = (struct fealist *)
3969 (((char *) &pSMBr->hdr.Protocol) +
3970 data_offset);
3971 name_len = le32_to_cpu(ea_response_data->list_len);
3972 cFYI(1,("ea length %d", name_len));
3973 if(name_len <= 8) {
3974 /* returned EA size zeroed at top of function */
3975 cFYI(1,("empty EA list returned from server"));
3976 } else {
3977 /* account for ea list len */
3978 name_len -= 4;
3979 temp_fea = ea_response_data->list;
3980 temp_ptr = (char *)temp_fea;
3981 while(name_len > 0) {
3982 __u16 value_len;
3983 name_len -= 4;
3984 temp_ptr += 4;
3985 rc += temp_fea->name_len;
3986 /* account for prefix user. and trailing null */
3987 rc = rc + 5 + 1;
3988 if(rc<(int)buf_size) {
3989 memcpy(EAData,"user.",5);
3990 EAData+=5;
3991 memcpy(EAData,temp_ptr,temp_fea->name_len);
3992 EAData+=temp_fea->name_len;
3993 /* null terminate name */
3994 *EAData = 0;
3995 EAData = EAData + 1;
3996 } else if(buf_size == 0) {
3997 /* skip copy - calc size only */
3998 } else {
3999 /* stop before overrun buffer */
4000 rc = -ERANGE;
4001 break;
4002 }
4003 name_len -= temp_fea->name_len;
4004 temp_ptr += temp_fea->name_len;
4005 /* account for trailing null */
4006 name_len--;
4007 temp_ptr++;
4008 value_len = le16_to_cpu(temp_fea->value_len);
4009 name_len -= value_len;
4010 temp_ptr += value_len;
4011 /* BB check that temp_ptr is still within smb BB*/
4012 /* no trailing null to account for in value len */
4013 /* go on to next EA */
4014 temp_fea = (struct fea *)temp_ptr;
4015 }
4016 }
4017 }
4018 }
4019 if (pSMB)
4020 cifs_buf_release(pSMB);
4021 if (rc == -EAGAIN)
4022 goto QAllEAsRetry;
4023
4024 return (ssize_t)rc;
4025 }
4026
4027 ssize_t CIFSSMBQueryEA(const int xid,struct cifsTconInfo * tcon,
4028 const unsigned char * searchName,const unsigned char * ea_name,
4029 unsigned char * ea_value, size_t buf_size,
4030 const struct nls_table *nls_codepage, int remap)
4031 {
4032 TRANSACTION2_QPI_REQ *pSMB = NULL;
4033 TRANSACTION2_QPI_RSP *pSMBr = NULL;
4034 int rc = 0;
4035 int bytes_returned;
4036 int name_len;
4037 struct fea * temp_fea;
4038 char * temp_ptr;
4039 __u16 params, byte_count;
4040
4041 cFYI(1, ("In Query EA path %s", searchName));
4042 QEARetry:
4043 rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
4044 (void **) &pSMBr);
4045 if (rc)
4046 return rc;
4047
4048 if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
4049 name_len =
4050 cifsConvertToUCS((__le16 *) pSMB->FileName, searchName,
4051 PATH_MAX, nls_codepage, remap);
4052 name_len++; /* trailing null */
4053 name_len *= 2;
4054 } else { /* BB improve the check for buffer overruns BB */
4055 name_len = strnlen(searchName, PATH_MAX);
4056 name_len++; /* trailing null */
4057 strncpy(pSMB->FileName, searchName, name_len);
4058 }
4059
4060 params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */ ;
4061 pSMB->TotalDataCount = 0;
4062 pSMB->MaxParameterCount = cpu_to_le16(2);
4063 pSMB->MaxDataCount = cpu_to_le16(4000); /* BB find exact max SMB PDU from sess structure BB */
4064 pSMB->MaxSetupCount = 0;
4065 pSMB->Reserved = 0;
4066 pSMB->Flags = 0;
4067 pSMB->Timeout = 0;
4068 pSMB->Reserved2 = 0;
4069 pSMB->ParameterOffset = cpu_to_le16(offsetof(
4070 struct smb_com_transaction2_qpi_req ,InformationLevel) - 4);
4071 pSMB->DataCount = 0;
4072 pSMB->DataOffset = 0;
4073 pSMB->SetupCount = 1;
4074 pSMB->Reserved3 = 0;
4075 pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION);
4076 byte_count = params + 1 /* pad */ ;
4077 pSMB->TotalParameterCount = cpu_to_le16(params);
4078 pSMB->ParameterCount = pSMB->TotalParameterCount;
4079 pSMB->InformationLevel = cpu_to_le16(SMB_INFO_QUERY_ALL_EAS);
4080 pSMB->Reserved4 = 0;
4081 pSMB->hdr.smb_buf_length += byte_count;
4082 pSMB->ByteCount = cpu_to_le16(byte_count);
4083
4084 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
4085 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
4086 if (rc) {
4087 cFYI(1, ("Send error in Query EA = %d", rc));
4088 } else { /* decode response */
4089 rc = validate_t2((struct smb_t2_rsp *)pSMBr);
4090
4091 /* BB also check enough total bytes returned */
4092 /* BB we need to improve the validity checking
4093 of these trans2 responses */
4094 if (rc || (pSMBr->ByteCount < 4))
4095 rc = -EIO; /* bad smb */
4096 /* else if (pFindData){
4097 memcpy((char *) pFindData,
4098 (char *) &pSMBr->hdr.Protocol +
4099 data_offset, kl);
4100 }*/ else {
4101 /* check that length of list is not more than bcc */
4102 /* check that each entry does not go beyond length
4103 of list */
4104 /* check that each element of each entry does not
4105 go beyond end of list */
4106 __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
4107 struct fealist * ea_response_data;
4108 rc = -ENODATA;
4109 /* validate_trans2_offsets() */
4110 /* BB to check if(start of smb + data_offset > &bcc+ bcc)*/
4111 ea_response_data = (struct fealist *)
4112 (((char *) &pSMBr->hdr.Protocol) +
4113 data_offset);
4114 name_len = le32_to_cpu(ea_response_data->list_len);
4115 cFYI(1,("ea length %d", name_len));
4116 if(name_len <= 8) {
4117 /* returned EA size zeroed at top of function */
4118 cFYI(1,("empty EA list returned from server"));
4119 } else {
4120 /* account for ea list len */
4121 name_len -= 4;
4122 temp_fea = ea_response_data->list;
4123 temp_ptr = (char *)temp_fea;
4124 /* loop through checking if we have a matching
4125 name and then return the associated value */
4126 while(name_len > 0) {
4127 __u16 value_len;
4128 name_len -= 4;
4129 temp_ptr += 4;
4130 value_len = le16_to_cpu(temp_fea->value_len);
4131 /* BB validate that value_len falls within SMB,
4132 even though maximum for name_len is 255 */
4133 if(memcmp(temp_fea->name,ea_name,
4134 temp_fea->name_len) == 0) {
4135 /* found a match */
4136 rc = value_len;
4137 /* account for prefix user. and trailing null */
4138 if(rc<=(int)buf_size) {
4139 memcpy(ea_value,
4140 temp_fea->name+temp_fea->name_len+1,
4141 rc);
4142 /* ea values, unlike ea names,
4143 are not null terminated */
4144 } else if(buf_size == 0) {
4145 /* skip copy - calc size only */
4146 } else {
4147 /* stop before overrun buffer */
4148 rc = -ERANGE;
4149 }
4150 break;
4151 }
4152 name_len -= temp_fea->name_len;
4153 temp_ptr += temp_fea->name_len;
4154 /* account for trailing null */
4155 name_len--;
4156 temp_ptr++;
4157 name_len -= value_len;
4158 temp_ptr += value_len;
4159 /* no trailing null to account for in value len */
4160 /* go on to next EA */
4161 temp_fea = (struct fea *)temp_ptr;
4162 }
4163 }
4164 }
4165 }
4166 if (pSMB)
4167 cifs_buf_release(pSMB);
4168 if (rc == -EAGAIN)
4169 goto QEARetry;
4170
4171 return (ssize_t)rc;
4172 }
4173
4174 int
4175 CIFSSMBSetEA(const int xid, struct cifsTconInfo *tcon, const char *fileName,
4176 const char * ea_name, const void * ea_value,
4177 const __u16 ea_value_len, const struct nls_table *nls_codepage,
4178 int remap)
4179 {
4180 struct smb_com_transaction2_spi_req *pSMB = NULL;
4181 struct smb_com_transaction2_spi_rsp *pSMBr = NULL;
4182 struct fealist *parm_data;
4183 int name_len;
4184 int rc = 0;
4185 int bytes_returned = 0;
4186 __u16 params, param_offset, byte_count, offset, count;
4187
4188 cFYI(1, ("In SetEA"));
4189 SetEARetry:
4190 rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
4191 (void **) &pSMBr);
4192 if (rc)
4193 return rc;
4194
4195 if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
4196 name_len =
4197 cifsConvertToUCS((__le16 *) pSMB->FileName, fileName,
4198 PATH_MAX, nls_codepage, remap);
4199 name_len++; /* trailing null */
4200 name_len *= 2;
4201 } else { /* BB improve the check for buffer overruns BB */
4202 name_len = strnlen(fileName, PATH_MAX);
4203 name_len++; /* trailing null */
4204 strncpy(pSMB->FileName, fileName, name_len);
4205 }
4206
4207 params = 6 + name_len;
4208
4209 /* done calculating parms using name_len of file name,
4210 now use name_len to calculate length of ea name
4211 we are going to create in the inode xattrs */
4212 if(ea_name == NULL)
4213 name_len = 0;
4214 else
4215 name_len = strnlen(ea_name,255);
4216
4217 count = sizeof(*parm_data) + ea_value_len + name_len + 1;
4218 pSMB->MaxParameterCount = cpu_to_le16(2);
4219 pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB size from sess */
4220 pSMB->MaxSetupCount = 0;
4221 pSMB->Reserved = 0;
4222 pSMB->Flags = 0;
4223 pSMB->Timeout = 0;
4224 pSMB->Reserved2 = 0;
4225 param_offset = offsetof(struct smb_com_transaction2_spi_req,
4226 InformationLevel) - 4;
4227 offset = param_offset + params;
4228 pSMB->InformationLevel =
4229 cpu_to_le16(SMB_SET_FILE_EA);
4230
4231 parm_data =
4232 (struct fealist *) (((char *) &pSMB->hdr.Protocol) +
4233 offset);
4234 pSMB->ParameterOffset = cpu_to_le16(param_offset);
4235 pSMB->DataOffset = cpu_to_le16(offset);
4236 pSMB->SetupCount = 1;
4237 pSMB->Reserved3 = 0;
4238 pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION);
4239 byte_count = 3 /* pad */ + params + count;
4240 pSMB->DataCount = cpu_to_le16(count);
4241 parm_data->list_len = cpu_to_le32(count);
4242 parm_data->list[0].EA_flags = 0;
4243 /* we checked above that name len is less than 255 */
4244 parm_data->list[0].name_len = (__u8)name_len;;
4245 /* EA names are always ASCII */
4246 if(ea_name)
4247 strncpy(parm_data->list[0].name,ea_name,name_len);
4248 parm_data->list[0].name[name_len] = 0;
4249 parm_data->list[0].value_len = cpu_to_le16(ea_value_len);
4250 /* caller ensures that ea_value_len is less than 64K but
4251 we need to ensure that it fits within the smb */
4252
4253 /*BB add length check that it would fit in negotiated SMB buffer size BB */
4254 /* if(ea_value_len > buffer_size - 512 (enough for header)) */
4255 if(ea_value_len)
4256 memcpy(parm_data->list[0].name+name_len+1,ea_value,ea_value_len);
4257
4258 pSMB->TotalDataCount = pSMB->DataCount;
4259 pSMB->ParameterCount = cpu_to_le16(params);
4260 pSMB->TotalParameterCount = pSMB->ParameterCount;
4261 pSMB->Reserved4 = 0;
4262 pSMB->hdr.smb_buf_length += byte_count;
4263 pSMB->ByteCount = cpu_to_le16(byte_count);
4264 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
4265 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
4266 if (rc) {
4267 cFYI(1, ("SetPathInfo (EA) returned %d", rc));
4268 }
4269
4270 cifs_buf_release(pSMB);
4271
4272 if (rc == -EAGAIN)
4273 goto SetEARetry;
4274
4275 return rc;
4276 }
4277
4278 #endif
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