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[PATCH] m32r: security fix of {get,put}_user macros
[deliverable/linux.git] / fs / cifs / cifssmb.c
1 /*
2 * fs/cifs/cifssmb.c
3 *
4 * Copyright (C) International Business Machines Corp., 2002,2006
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 #include "cifsacl.h"
41
42 #ifdef CONFIG_CIFS_POSIX
43 static struct {
44 int index;
45 char *name;
46 } protocols[] = {
47 {CIFS_PROT, "\2NT LM 0.12"},
48 {CIFS_PROT, "\2POSIX 2"},
49 {BAD_PROT, "\2"}
50 };
51 #else
52 static struct {
53 int index;
54 char *name;
55 } protocols[] = {
56 {CIFS_PROT, "\2NT LM 0.12"},
57 {BAD_PROT, "\2"}
58 };
59 #endif
60
61
62 /* Mark as invalid, all open files on tree connections since they
63 were closed when session to server was lost */
64 static void mark_open_files_invalid(struct cifsTconInfo * pTcon)
65 {
66 struct cifsFileInfo *open_file = NULL;
67 struct list_head * tmp;
68 struct list_head * tmp1;
69
70 /* list all files open on tree connection and mark them invalid */
71 write_lock(&GlobalSMBSeslock);
72 list_for_each_safe(tmp, tmp1, &pTcon->openFileList) {
73 open_file = list_entry(tmp,struct cifsFileInfo, tlist);
74 if(open_file) {
75 open_file->invalidHandle = TRUE;
76 }
77 }
78 write_unlock(&GlobalSMBSeslock);
79 /* BB Add call to invalidate_inodes(sb) for all superblocks mounted
80 to this tcon */
81 }
82
83 /* If the return code is zero, this function must fill in request_buf pointer */
84 static int
85 small_smb_init(int smb_command, int wct, struct cifsTconInfo *tcon,
86 void **request_buf /* returned */)
87 {
88 int rc = 0;
89
90 /* SMBs NegProt, SessSetup, uLogoff do not have tcon yet so
91 check for tcp and smb session status done differently
92 for those three - in the calling routine */
93 if(tcon) {
94 if(tcon->tidStatus == CifsExiting) {
95 /* only tree disconnect, open, and write,
96 (and ulogoff which does not have tcon)
97 are allowed as we start force umount */
98 if((smb_command != SMB_COM_WRITE_ANDX) &&
99 (smb_command != SMB_COM_OPEN_ANDX) &&
100 (smb_command != SMB_COM_TREE_DISCONNECT)) {
101 cFYI(1,("can not send cmd %d while umounting",
102 smb_command));
103 return -ENODEV;
104 }
105 }
106 if((tcon->ses) && (tcon->ses->status != CifsExiting) &&
107 (tcon->ses->server)){
108 struct nls_table *nls_codepage;
109 /* Give Demultiplex thread up to 10 seconds to
110 reconnect, should be greater than cifs socket
111 timeout which is 7 seconds */
112 while(tcon->ses->server->tcpStatus == CifsNeedReconnect) {
113 wait_event_interruptible_timeout(tcon->ses->server->response_q,
114 (tcon->ses->server->tcpStatus == CifsGood), 10 * HZ);
115 if(tcon->ses->server->tcpStatus == CifsNeedReconnect) {
116 /* on "soft" mounts we wait once */
117 if((tcon->retry == FALSE) ||
118 (tcon->ses->status == CifsExiting)) {
119 cFYI(1,("gave up waiting on reconnect in smb_init"));
120 return -EHOSTDOWN;
121 } /* else "hard" mount - keep retrying
122 until process is killed or server
123 comes back on-line */
124 } else /* TCP session is reestablished now */
125 break;
126
127 }
128
129 nls_codepage = load_nls_default();
130 /* need to prevent multiple threads trying to
131 simultaneously reconnect the same SMB session */
132 down(&tcon->ses->sesSem);
133 if(tcon->ses->status == CifsNeedReconnect)
134 rc = cifs_setup_session(0, tcon->ses,
135 nls_codepage);
136 if(!rc && (tcon->tidStatus == CifsNeedReconnect)) {
137 mark_open_files_invalid(tcon);
138 rc = CIFSTCon(0, tcon->ses, tcon->treeName, tcon
139 , nls_codepage);
140 up(&tcon->ses->sesSem);
141 /* BB FIXME add code to check if wsize needs
142 update due to negotiated smb buffer size
143 shrinking */
144 if(rc == 0)
145 atomic_inc(&tconInfoReconnectCount);
146
147 cFYI(1, ("reconnect tcon rc = %d", rc));
148 /* Removed call to reopen open files here -
149 it is safer (and faster) to reopen files
150 one at a time as needed in read and write */
151
152 /* Check if handle based operation so we
153 know whether we can continue or not without
154 returning to caller to reset file handle */
155 switch(smb_command) {
156 case SMB_COM_READ_ANDX:
157 case SMB_COM_WRITE_ANDX:
158 case SMB_COM_CLOSE:
159 case SMB_COM_FIND_CLOSE2:
160 case SMB_COM_LOCKING_ANDX: {
161 unload_nls(nls_codepage);
162 return -EAGAIN;
163 }
164 }
165 } else {
166 up(&tcon->ses->sesSem);
167 }
168 unload_nls(nls_codepage);
169
170 } else {
171 return -EIO;
172 }
173 }
174 if(rc)
175 return rc;
176
177 *request_buf = cifs_small_buf_get();
178 if (*request_buf == NULL) {
179 /* BB should we add a retry in here if not a writepage? */
180 return -ENOMEM;
181 }
182
183 header_assemble((struct smb_hdr *) *request_buf, smb_command, tcon,wct);
184
185 if(tcon != NULL)
186 cifs_stats_inc(&tcon->num_smbs_sent);
187
188 return rc;
189 }
190
191 #ifdef CONFIG_CIFS_EXPERIMENTAL
192 int
193 small_smb_init_no_tc(const int smb_command, const int wct,
194 struct cifsSesInfo *ses, void **request_buf)
195 {
196 int rc;
197 struct smb_hdr * buffer;
198
199 rc = small_smb_init(smb_command, wct, NULL, request_buf);
200 if(rc)
201 return rc;
202
203 buffer = (struct smb_hdr *)*request_buf;
204 buffer->Mid = GetNextMid(ses->server);
205 if (ses->capabilities & CAP_UNICODE)
206 buffer->Flags2 |= SMBFLG2_UNICODE;
207 if (ses->capabilities & CAP_STATUS32)
208 buffer->Flags2 |= SMBFLG2_ERR_STATUS;
209
210 /* uid, tid can stay at zero as set in header assemble */
211
212 /* BB add support for turning on the signing when
213 this function is used after 1st of session setup requests */
214
215 return rc;
216 }
217 #endif /* CONFIG_CIFS_EXPERIMENTAL */
218
219 /* If the return code is zero, this function must fill in request_buf pointer */
220 static int
221 smb_init(int smb_command, int wct, struct cifsTconInfo *tcon,
222 void **request_buf /* returned */ ,
223 void **response_buf /* returned */ )
224 {
225 int rc = 0;
226
227 /* SMBs NegProt, SessSetup, uLogoff do not have tcon yet so
228 check for tcp and smb session status done differently
229 for those three - in the calling routine */
230 if(tcon) {
231 if(tcon->tidStatus == CifsExiting) {
232 /* only tree disconnect, open, and write,
233 (and ulogoff which does not have tcon)
234 are allowed as we start force umount */
235 if((smb_command != SMB_COM_WRITE_ANDX) &&
236 (smb_command != SMB_COM_OPEN_ANDX) &&
237 (smb_command != SMB_COM_TREE_DISCONNECT)) {
238 cFYI(1,("can not send cmd %d while umounting",
239 smb_command));
240 return -ENODEV;
241 }
242 }
243
244 if((tcon->ses) && (tcon->ses->status != CifsExiting) &&
245 (tcon->ses->server)){
246 struct nls_table *nls_codepage;
247 /* Give Demultiplex thread up to 10 seconds to
248 reconnect, should be greater than cifs socket
249 timeout which is 7 seconds */
250 while(tcon->ses->server->tcpStatus == CifsNeedReconnect) {
251 wait_event_interruptible_timeout(tcon->ses->server->response_q,
252 (tcon->ses->server->tcpStatus == CifsGood), 10 * HZ);
253 if(tcon->ses->server->tcpStatus ==
254 CifsNeedReconnect) {
255 /* on "soft" mounts we wait once */
256 if((tcon->retry == FALSE) ||
257 (tcon->ses->status == CifsExiting)) {
258 cFYI(1,("gave up waiting on reconnect in smb_init"));
259 return -EHOSTDOWN;
260 } /* else "hard" mount - keep retrying
261 until process is killed or server
262 comes on-line */
263 } else /* TCP session is reestablished now */
264 break;
265
266 }
267
268 nls_codepage = load_nls_default();
269 /* need to prevent multiple threads trying to
270 simultaneously reconnect the same SMB session */
271 down(&tcon->ses->sesSem);
272 if(tcon->ses->status == CifsNeedReconnect)
273 rc = cifs_setup_session(0, tcon->ses,
274 nls_codepage);
275 if(!rc && (tcon->tidStatus == CifsNeedReconnect)) {
276 mark_open_files_invalid(tcon);
277 rc = CIFSTCon(0, tcon->ses, tcon->treeName,
278 tcon, nls_codepage);
279 up(&tcon->ses->sesSem);
280 /* BB FIXME add code to check if wsize needs
281 update due to negotiated smb buffer size
282 shrinking */
283 if(rc == 0)
284 atomic_inc(&tconInfoReconnectCount);
285
286 cFYI(1, ("reconnect tcon rc = %d", rc));
287 /* Removed call to reopen open files here -
288 it is safer (and faster) to reopen files
289 one at a time as needed in read and write */
290
291 /* Check if handle based operation so we
292 know whether we can continue or not without
293 returning to caller to reset file handle */
294 switch(smb_command) {
295 case SMB_COM_READ_ANDX:
296 case SMB_COM_WRITE_ANDX:
297 case SMB_COM_CLOSE:
298 case SMB_COM_FIND_CLOSE2:
299 case SMB_COM_LOCKING_ANDX: {
300 unload_nls(nls_codepage);
301 return -EAGAIN;
302 }
303 }
304 } else {
305 up(&tcon->ses->sesSem);
306 }
307 unload_nls(nls_codepage);
308
309 } else {
310 return -EIO;
311 }
312 }
313 if(rc)
314 return rc;
315
316 *request_buf = cifs_buf_get();
317 if (*request_buf == NULL) {
318 /* BB should we add a retry in here if not a writepage? */
319 return -ENOMEM;
320 }
321 /* Although the original thought was we needed the response buf for */
322 /* potential retries of smb operations it turns out we can determine */
323 /* from the mid flags when the request buffer can be resent without */
324 /* having to use a second distinct buffer for the response */
325 *response_buf = *request_buf;
326
327 header_assemble((struct smb_hdr *) *request_buf, smb_command, tcon,
328 wct /*wct */ );
329
330 if(tcon != NULL)
331 cifs_stats_inc(&tcon->num_smbs_sent);
332
333 return rc;
334 }
335
336 static int validate_t2(struct smb_t2_rsp * pSMB)
337 {
338 int rc = -EINVAL;
339 int total_size;
340 char * pBCC;
341
342 /* check for plausible wct, bcc and t2 data and parm sizes */
343 /* check for parm and data offset going beyond end of smb */
344 if(pSMB->hdr.WordCount >= 10) {
345 if((le16_to_cpu(pSMB->t2_rsp.ParameterOffset) <= 1024) &&
346 (le16_to_cpu(pSMB->t2_rsp.DataOffset) <= 1024)) {
347 /* check that bcc is at least as big as parms + data */
348 /* check that bcc is less than negotiated smb buffer */
349 total_size = le16_to_cpu(pSMB->t2_rsp.ParameterCount);
350 if(total_size < 512) {
351 total_size+=le16_to_cpu(pSMB->t2_rsp.DataCount);
352 /* BCC le converted in SendReceive */
353 pBCC = (pSMB->hdr.WordCount * 2) +
354 sizeof(struct smb_hdr) +
355 (char *)pSMB;
356 if((total_size <= (*(u16 *)pBCC)) &&
357 (total_size <
358 CIFSMaxBufSize+MAX_CIFS_HDR_SIZE)) {
359 return 0;
360 }
361
362 }
363 }
364 }
365 cifs_dump_mem("Invalid transact2 SMB: ",(char *)pSMB,
366 sizeof(struct smb_t2_rsp) + 16);
367 return rc;
368 }
369 int
370 CIFSSMBNegotiate(unsigned int xid, struct cifsSesInfo *ses)
371 {
372 NEGOTIATE_REQ *pSMB;
373 NEGOTIATE_RSP *pSMBr;
374 int rc = 0;
375 int bytes_returned;
376 struct TCP_Server_Info * server;
377 u16 count;
378
379 if(ses->server)
380 server = ses->server;
381 else {
382 rc = -EIO;
383 return rc;
384 }
385 rc = smb_init(SMB_COM_NEGOTIATE, 0, NULL /* no tcon yet */ ,
386 (void **) &pSMB, (void **) &pSMBr);
387 if (rc)
388 return rc;
389 pSMB->hdr.Mid = GetNextMid(server);
390 pSMB->hdr.Flags2 |= SMBFLG2_UNICODE;
391 if (extended_security)
392 pSMB->hdr.Flags2 |= SMBFLG2_EXT_SEC;
393
394 count = strlen(protocols[0].name) + 1;
395 strncpy(pSMB->DialectsArray, protocols[0].name, 30);
396 /* null guaranteed to be at end of source and target buffers anyway */
397
398 pSMB->hdr.smb_buf_length += count;
399 pSMB->ByteCount = cpu_to_le16(count);
400
401 rc = SendReceive(xid, ses, (struct smb_hdr *) pSMB,
402 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
403 if (rc == 0) {
404 server->secMode = pSMBr->SecurityMode;
405 if((server->secMode & SECMODE_USER) == 0)
406 cFYI(1,("share mode security"));
407 server->secType = NTLM; /* BB override default for
408 NTLMv2 or kerberos v5 */
409 /* one byte - no need to convert this or EncryptionKeyLen
410 from little endian */
411 server->maxReq = le16_to_cpu(pSMBr->MaxMpxCount);
412 /* probably no need to store and check maxvcs */
413 server->maxBuf =
414 min(le32_to_cpu(pSMBr->MaxBufferSize),
415 (__u32) CIFSMaxBufSize + MAX_CIFS_HDR_SIZE);
416 server->maxRw = le32_to_cpu(pSMBr->MaxRawSize);
417 cFYI(0, ("Max buf = %d", ses->server->maxBuf));
418 GETU32(ses->server->sessid) = le32_to_cpu(pSMBr->SessionKey);
419 server->capabilities = le32_to_cpu(pSMBr->Capabilities);
420 server->timeZone = le16_to_cpu(pSMBr->ServerTimeZone);
421 /* BB with UTC do we ever need to be using srvr timezone? */
422 if (pSMBr->EncryptionKeyLength == CIFS_CRYPTO_KEY_SIZE) {
423 memcpy(server->cryptKey, pSMBr->u.EncryptionKey,
424 CIFS_CRYPTO_KEY_SIZE);
425 } else if ((pSMBr->hdr.Flags2 & SMBFLG2_EXT_SEC)
426 && (pSMBr->EncryptionKeyLength == 0)) {
427 /* decode security blob */
428 } else
429 rc = -EIO;
430
431 /* BB might be helpful to save off the domain of server here */
432
433 if ((pSMBr->hdr.Flags2 & SMBFLG2_EXT_SEC) &&
434 (server->capabilities & CAP_EXTENDED_SECURITY)) {
435 count = pSMBr->ByteCount;
436 if (count < 16)
437 rc = -EIO;
438 else if (count == 16) {
439 server->secType = RawNTLMSSP;
440 if (server->socketUseCount.counter > 1) {
441 if (memcmp
442 (server->server_GUID,
443 pSMBr->u.extended_response.
444 GUID, 16) != 0) {
445 cFYI(1, ("server UID changed"));
446 memcpy(server->
447 server_GUID,
448 pSMBr->u.
449 extended_response.
450 GUID, 16);
451 }
452 } else
453 memcpy(server->server_GUID,
454 pSMBr->u.extended_response.
455 GUID, 16);
456 } else {
457 rc = decode_negTokenInit(pSMBr->u.
458 extended_response.
459 SecurityBlob,
460 count - 16,
461 &server->secType);
462 if(rc == 1) {
463 /* BB Need to fill struct for sessetup here */
464 rc = -EOPNOTSUPP;
465 } else {
466 rc = -EINVAL;
467 }
468 }
469 } else
470 server->capabilities &= ~CAP_EXTENDED_SECURITY;
471 if(sign_CIFS_PDUs == FALSE) {
472 if(server->secMode & SECMODE_SIGN_REQUIRED)
473 cERROR(1,
474 ("Server requires /proc/fs/cifs/PacketSigningEnabled"));
475 server->secMode &= ~(SECMODE_SIGN_ENABLED | SECMODE_SIGN_REQUIRED);
476 } else if(sign_CIFS_PDUs == 1) {
477 if((server->secMode & SECMODE_SIGN_REQUIRED) == 0)
478 server->secMode &= ~(SECMODE_SIGN_ENABLED | SECMODE_SIGN_REQUIRED);
479 }
480
481 }
482
483 cifs_buf_release(pSMB);
484 return rc;
485 }
486
487 int
488 CIFSSMBTDis(const int xid, struct cifsTconInfo *tcon)
489 {
490 struct smb_hdr *smb_buffer;
491 struct smb_hdr *smb_buffer_response; /* BB removeme BB */
492 int rc = 0;
493 int length;
494
495 cFYI(1, ("In tree disconnect"));
496 /*
497 * If last user of the connection and
498 * connection alive - disconnect it
499 * If this is the last connection on the server session disconnect it
500 * (and inside session disconnect we should check if tcp socket needs
501 * to be freed and kernel thread woken up).
502 */
503 if (tcon)
504 down(&tcon->tconSem);
505 else
506 return -EIO;
507
508 atomic_dec(&tcon->useCount);
509 if (atomic_read(&tcon->useCount) > 0) {
510 up(&tcon->tconSem);
511 return -EBUSY;
512 }
513
514 /* No need to return error on this operation if tid invalidated and
515 closed on server already e.g. due to tcp session crashing */
516 if(tcon->tidStatus == CifsNeedReconnect) {
517 up(&tcon->tconSem);
518 return 0;
519 }
520
521 if((tcon->ses == NULL) || (tcon->ses->server == NULL)) {
522 up(&tcon->tconSem);
523 return -EIO;
524 }
525 rc = small_smb_init(SMB_COM_TREE_DISCONNECT, 0, tcon,
526 (void **)&smb_buffer);
527 if (rc) {
528 up(&tcon->tconSem);
529 return rc;
530 } else {
531 smb_buffer_response = smb_buffer; /* BB removeme BB */
532 }
533 rc = SendReceive(xid, tcon->ses, smb_buffer, smb_buffer_response,
534 &length, 0);
535 if (rc)
536 cFYI(1, ("Tree disconnect failed %d", rc));
537
538 if (smb_buffer)
539 cifs_small_buf_release(smb_buffer);
540 up(&tcon->tconSem);
541
542 /* No need to return error on this operation if tid invalidated and
543 closed on server already e.g. due to tcp session crashing */
544 if (rc == -EAGAIN)
545 rc = 0;
546
547 return rc;
548 }
549
550 int
551 CIFSSMBLogoff(const int xid, struct cifsSesInfo *ses)
552 {
553 struct smb_hdr *smb_buffer_response;
554 LOGOFF_ANDX_REQ *pSMB;
555 int rc = 0;
556 int length;
557
558 cFYI(1, ("In SMBLogoff for session disconnect"));
559 if (ses)
560 down(&ses->sesSem);
561 else
562 return -EIO;
563
564 atomic_dec(&ses->inUse);
565 if (atomic_read(&ses->inUse) > 0) {
566 up(&ses->sesSem);
567 return -EBUSY;
568 }
569 rc = small_smb_init(SMB_COM_LOGOFF_ANDX, 2, NULL, (void **)&pSMB);
570 if (rc) {
571 up(&ses->sesSem);
572 return rc;
573 }
574
575 smb_buffer_response = (struct smb_hdr *)pSMB; /* BB removeme BB */
576
577 if(ses->server) {
578 pSMB->hdr.Mid = GetNextMid(ses->server);
579
580 if(ses->server->secMode &
581 (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED))
582 pSMB->hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE;
583 }
584
585 pSMB->hdr.Uid = ses->Suid;
586
587 pSMB->AndXCommand = 0xFF;
588 rc = SendReceive(xid, ses, (struct smb_hdr *) pSMB,
589 smb_buffer_response, &length, 0);
590 if (ses->server) {
591 atomic_dec(&ses->server->socketUseCount);
592 if (atomic_read(&ses->server->socketUseCount) == 0) {
593 spin_lock(&GlobalMid_Lock);
594 ses->server->tcpStatus = CifsExiting;
595 spin_unlock(&GlobalMid_Lock);
596 rc = -ESHUTDOWN;
597 }
598 }
599 up(&ses->sesSem);
600 cifs_small_buf_release(pSMB);
601
602 /* if session dead then we do not need to do ulogoff,
603 since server closed smb session, no sense reporting
604 error */
605 if (rc == -EAGAIN)
606 rc = 0;
607 return rc;
608 }
609
610 int
611 CIFSSMBDelFile(const int xid, struct cifsTconInfo *tcon, const char *fileName,
612 const struct nls_table *nls_codepage, int remap)
613 {
614 DELETE_FILE_REQ *pSMB = NULL;
615 DELETE_FILE_RSP *pSMBr = NULL;
616 int rc = 0;
617 int bytes_returned;
618 int name_len;
619
620 DelFileRetry:
621 rc = smb_init(SMB_COM_DELETE, 1, tcon, (void **) &pSMB,
622 (void **) &pSMBr);
623 if (rc)
624 return rc;
625
626 if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
627 name_len =
628 cifsConvertToUCS((__le16 *) pSMB->fileName, fileName,
629 PATH_MAX, nls_codepage, remap);
630 name_len++; /* trailing null */
631 name_len *= 2;
632 } else { /* BB improve check for buffer overruns BB */
633 name_len = strnlen(fileName, PATH_MAX);
634 name_len++; /* trailing null */
635 strncpy(pSMB->fileName, fileName, name_len);
636 }
637 pSMB->SearchAttributes =
638 cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM);
639 pSMB->BufferFormat = 0x04;
640 pSMB->hdr.smb_buf_length += name_len + 1;
641 pSMB->ByteCount = cpu_to_le16(name_len + 1);
642 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
643 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
644 cifs_stats_inc(&tcon->num_deletes);
645 if (rc) {
646 cFYI(1, ("Error in RMFile = %d", rc));
647 }
648
649 cifs_buf_release(pSMB);
650 if (rc == -EAGAIN)
651 goto DelFileRetry;
652
653 return rc;
654 }
655
656 int
657 CIFSSMBRmDir(const int xid, struct cifsTconInfo *tcon, const char *dirName,
658 const struct nls_table *nls_codepage, int remap)
659 {
660 DELETE_DIRECTORY_REQ *pSMB = NULL;
661 DELETE_DIRECTORY_RSP *pSMBr = NULL;
662 int rc = 0;
663 int bytes_returned;
664 int name_len;
665
666 cFYI(1, ("In CIFSSMBRmDir"));
667 RmDirRetry:
668 rc = smb_init(SMB_COM_DELETE_DIRECTORY, 0, tcon, (void **) &pSMB,
669 (void **) &pSMBr);
670 if (rc)
671 return rc;
672
673 if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
674 name_len = cifsConvertToUCS((__le16 *) pSMB->DirName, dirName,
675 PATH_MAX, nls_codepage, remap);
676 name_len++; /* trailing null */
677 name_len *= 2;
678 } else { /* BB improve check for buffer overruns BB */
679 name_len = strnlen(dirName, PATH_MAX);
680 name_len++; /* trailing null */
681 strncpy(pSMB->DirName, dirName, name_len);
682 }
683
684 pSMB->BufferFormat = 0x04;
685 pSMB->hdr.smb_buf_length += name_len + 1;
686 pSMB->ByteCount = cpu_to_le16(name_len + 1);
687 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
688 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
689 cifs_stats_inc(&tcon->num_rmdirs);
690 if (rc) {
691 cFYI(1, ("Error in RMDir = %d", rc));
692 }
693
694 cifs_buf_release(pSMB);
695 if (rc == -EAGAIN)
696 goto RmDirRetry;
697 return rc;
698 }
699
700 int
701 CIFSSMBMkDir(const int xid, struct cifsTconInfo *tcon,
702 const char *name, const struct nls_table *nls_codepage, int remap)
703 {
704 int rc = 0;
705 CREATE_DIRECTORY_REQ *pSMB = NULL;
706 CREATE_DIRECTORY_RSP *pSMBr = NULL;
707 int bytes_returned;
708 int name_len;
709
710 cFYI(1, ("In CIFSSMBMkDir"));
711 MkDirRetry:
712 rc = smb_init(SMB_COM_CREATE_DIRECTORY, 0, tcon, (void **) &pSMB,
713 (void **) &pSMBr);
714 if (rc)
715 return rc;
716
717 if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
718 name_len = cifsConvertToUCS((__le16 *) pSMB->DirName, name,
719 PATH_MAX, nls_codepage, remap);
720 name_len++; /* trailing null */
721 name_len *= 2;
722 } else { /* BB improve check for buffer overruns BB */
723 name_len = strnlen(name, PATH_MAX);
724 name_len++; /* trailing null */
725 strncpy(pSMB->DirName, name, name_len);
726 }
727
728 pSMB->BufferFormat = 0x04;
729 pSMB->hdr.smb_buf_length += name_len + 1;
730 pSMB->ByteCount = cpu_to_le16(name_len + 1);
731 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
732 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
733 cifs_stats_inc(&tcon->num_mkdirs);
734 if (rc) {
735 cFYI(1, ("Error in Mkdir = %d", rc));
736 }
737
738 cifs_buf_release(pSMB);
739 if (rc == -EAGAIN)
740 goto MkDirRetry;
741 return rc;
742 }
743
744 static __u16 convert_disposition(int disposition)
745 {
746 __u16 ofun = 0;
747
748 switch (disposition) {
749 case FILE_SUPERSEDE:
750 ofun = SMBOPEN_OCREATE | SMBOPEN_OTRUNC;
751 break;
752 case FILE_OPEN:
753 ofun = SMBOPEN_OAPPEND;
754 break;
755 case FILE_CREATE:
756 ofun = SMBOPEN_OCREATE;
757 break;
758 case FILE_OPEN_IF:
759 ofun = SMBOPEN_OCREATE | SMBOPEN_OAPPEND;
760 break;
761 case FILE_OVERWRITE:
762 ofun = SMBOPEN_OTRUNC;
763 break;
764 case FILE_OVERWRITE_IF:
765 ofun = SMBOPEN_OCREATE | SMBOPEN_OTRUNC;
766 break;
767 default:
768 cFYI(1,("unknown disposition %d",disposition));
769 ofun = SMBOPEN_OAPPEND; /* regular open */
770 }
771 return ofun;
772 }
773
774 int
775 SMBLegacyOpen(const int xid, struct cifsTconInfo *tcon,
776 const char *fileName, const int openDisposition,
777 const int access_flags, const int create_options, __u16 * netfid,
778 int *pOplock, FILE_ALL_INFO * pfile_info,
779 const struct nls_table *nls_codepage, int remap)
780 {
781 int rc = -EACCES;
782 OPENX_REQ *pSMB = NULL;
783 OPENX_RSP *pSMBr = NULL;
784 int bytes_returned;
785 int name_len;
786 __u16 count;
787
788 OldOpenRetry:
789 rc = smb_init(SMB_COM_OPEN_ANDX, 15, tcon, (void **) &pSMB,
790 (void **) &pSMBr);
791 if (rc)
792 return rc;
793
794 pSMB->AndXCommand = 0xFF; /* none */
795
796 if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
797 count = 1; /* account for one byte pad to word boundary */
798 name_len =
799 cifsConvertToUCS((__le16 *) (pSMB->fileName + 1),
800 fileName, PATH_MAX, nls_codepage, remap);
801 name_len++; /* trailing null */
802 name_len *= 2;
803 } else { /* BB improve check for buffer overruns BB */
804 count = 0; /* no pad */
805 name_len = strnlen(fileName, PATH_MAX);
806 name_len++; /* trailing null */
807 strncpy(pSMB->fileName, fileName, name_len);
808 }
809 if (*pOplock & REQ_OPLOCK)
810 pSMB->OpenFlags = cpu_to_le16(REQ_OPLOCK);
811 else if (*pOplock & REQ_BATCHOPLOCK) {
812 pSMB->OpenFlags = cpu_to_le16(REQ_BATCHOPLOCK);
813 }
814 pSMB->OpenFlags |= cpu_to_le16(REQ_MORE_INFO);
815 /* BB fixme add conversion for access_flags to bits 0 - 2 of mode */
816 /* 0 = read
817 1 = write
818 2 = rw
819 3 = execute
820 */
821 pSMB->Mode = cpu_to_le16(2);
822 pSMB->Mode |= cpu_to_le16(0x40); /* deny none */
823 /* set file as system file if special file such
824 as fifo and server expecting SFU style and
825 no Unix extensions */
826
827 if(create_options & CREATE_OPTION_SPECIAL)
828 pSMB->FileAttributes = cpu_to_le16(ATTR_SYSTEM);
829 else
830 pSMB->FileAttributes = cpu_to_le16(0/*ATTR_NORMAL*/); /* BB FIXME */
831
832 /* if ((omode & S_IWUGO) == 0)
833 pSMB->FileAttributes |= cpu_to_le32(ATTR_READONLY);*/
834 /* Above line causes problems due to vfs splitting create into two
835 pieces - need to set mode after file created not while it is
836 being created */
837
838 /* BB FIXME BB */
839 /* pSMB->CreateOptions = cpu_to_le32(create_options & CREATE_OPTIONS_MASK); */
840 /* BB FIXME END BB */
841
842 pSMB->Sattr = cpu_to_le16(ATTR_HIDDEN | ATTR_SYSTEM | ATTR_DIRECTORY);
843 pSMB->OpenFunction = cpu_to_le16(convert_disposition(openDisposition));
844 count += name_len;
845 pSMB->hdr.smb_buf_length += count;
846
847 pSMB->ByteCount = cpu_to_le16(count);
848 /* long_op set to 1 to allow for oplock break timeouts */
849 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
850 (struct smb_hdr *) pSMBr, &bytes_returned, 1);
851 cifs_stats_inc(&tcon->num_opens);
852 if (rc) {
853 cFYI(1, ("Error in Open = %d", rc));
854 } else {
855 /* BB verify if wct == 15 */
856
857 /* *pOplock = pSMBr->OplockLevel; */ /* BB take from action field BB */
858
859 *netfid = pSMBr->Fid; /* cifs fid stays in le */
860 /* Let caller know file was created so we can set the mode. */
861 /* Do we care about the CreateAction in any other cases? */
862 /* BB FIXME BB */
863 /* if(cpu_to_le32(FILE_CREATE) == pSMBr->CreateAction)
864 *pOplock |= CIFS_CREATE_ACTION; */
865 /* BB FIXME END */
866
867 if(pfile_info) {
868 pfile_info->CreationTime = 0; /* BB convert CreateTime*/
869 pfile_info->LastAccessTime = 0; /* BB fixme */
870 pfile_info->LastWriteTime = 0; /* BB fixme */
871 pfile_info->ChangeTime = 0; /* BB fixme */
872 pfile_info->Attributes =
873 cpu_to_le32(le16_to_cpu(pSMBr->FileAttributes));
874 /* the file_info buf is endian converted by caller */
875 pfile_info->AllocationSize =
876 cpu_to_le64(le32_to_cpu(pSMBr->EndOfFile));
877 pfile_info->EndOfFile = pfile_info->AllocationSize;
878 pfile_info->NumberOfLinks = cpu_to_le32(1);
879 }
880 }
881
882 cifs_buf_release(pSMB);
883 if (rc == -EAGAIN)
884 goto OldOpenRetry;
885 return rc;
886 }
887
888 int
889 CIFSSMBOpen(const int xid, struct cifsTconInfo *tcon,
890 const char *fileName, const int openDisposition,
891 const int access_flags, const int create_options, __u16 * netfid,
892 int *pOplock, FILE_ALL_INFO * pfile_info,
893 const struct nls_table *nls_codepage, int remap)
894 {
895 int rc = -EACCES;
896 OPEN_REQ *pSMB = NULL;
897 OPEN_RSP *pSMBr = NULL;
898 int bytes_returned;
899 int name_len;
900 __u16 count;
901
902 openRetry:
903 rc = smb_init(SMB_COM_NT_CREATE_ANDX, 24, tcon, (void **) &pSMB,
904 (void **) &pSMBr);
905 if (rc)
906 return rc;
907
908 pSMB->AndXCommand = 0xFF; /* none */
909
910 if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
911 count = 1; /* account for one byte pad to word boundary */
912 name_len =
913 cifsConvertToUCS((__le16 *) (pSMB->fileName + 1),
914 fileName, PATH_MAX, nls_codepage, remap);
915 name_len++; /* trailing null */
916 name_len *= 2;
917 pSMB->NameLength = cpu_to_le16(name_len);
918 } else { /* BB improve check for buffer overruns BB */
919 count = 0; /* no pad */
920 name_len = strnlen(fileName, PATH_MAX);
921 name_len++; /* trailing null */
922 pSMB->NameLength = cpu_to_le16(name_len);
923 strncpy(pSMB->fileName, fileName, name_len);
924 }
925 if (*pOplock & REQ_OPLOCK)
926 pSMB->OpenFlags = cpu_to_le32(REQ_OPLOCK);
927 else if (*pOplock & REQ_BATCHOPLOCK) {
928 pSMB->OpenFlags = cpu_to_le32(REQ_BATCHOPLOCK);
929 }
930 pSMB->DesiredAccess = cpu_to_le32(access_flags);
931 pSMB->AllocationSize = 0;
932 /* set file as system file if special file such
933 as fifo and server expecting SFU style and
934 no Unix extensions */
935 if(create_options & CREATE_OPTION_SPECIAL)
936 pSMB->FileAttributes = cpu_to_le32(ATTR_SYSTEM);
937 else
938 pSMB->FileAttributes = cpu_to_le32(ATTR_NORMAL);
939 /* XP does not handle ATTR_POSIX_SEMANTICS */
940 /* but it helps speed up case sensitive checks for other
941 servers such as Samba */
942 if (tcon->ses->capabilities & CAP_UNIX)
943 pSMB->FileAttributes |= cpu_to_le32(ATTR_POSIX_SEMANTICS);
944
945 /* if ((omode & S_IWUGO) == 0)
946 pSMB->FileAttributes |= cpu_to_le32(ATTR_READONLY);*/
947 /* Above line causes problems due to vfs splitting create into two
948 pieces - need to set mode after file created not while it is
949 being created */
950 pSMB->ShareAccess = cpu_to_le32(FILE_SHARE_ALL);
951 pSMB->CreateDisposition = cpu_to_le32(openDisposition);
952 pSMB->CreateOptions = cpu_to_le32(create_options & CREATE_OPTIONS_MASK);
953 /* BB Expirement with various impersonation levels and verify */
954 pSMB->ImpersonationLevel = cpu_to_le32(SECURITY_IMPERSONATION);
955 pSMB->SecurityFlags =
956 SECURITY_CONTEXT_TRACKING | SECURITY_EFFECTIVE_ONLY;
957
958 count += name_len;
959 pSMB->hdr.smb_buf_length += count;
960
961 pSMB->ByteCount = cpu_to_le16(count);
962 /* long_op set to 1 to allow for oplock break timeouts */
963 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
964 (struct smb_hdr *) pSMBr, &bytes_returned, 1);
965 cifs_stats_inc(&tcon->num_opens);
966 if (rc) {
967 cFYI(1, ("Error in Open = %d", rc));
968 } else {
969 *pOplock = pSMBr->OplockLevel; /* 1 byte no need to le_to_cpu */
970 *netfid = pSMBr->Fid; /* cifs fid stays in le */
971 /* Let caller know file was created so we can set the mode. */
972 /* Do we care about the CreateAction in any other cases? */
973 if(cpu_to_le32(FILE_CREATE) == pSMBr->CreateAction)
974 *pOplock |= CIFS_CREATE_ACTION;
975 if(pfile_info) {
976 memcpy((char *)pfile_info,(char *)&pSMBr->CreationTime,
977 36 /* CreationTime to Attributes */);
978 /* the file_info buf is endian converted by caller */
979 pfile_info->AllocationSize = pSMBr->AllocationSize;
980 pfile_info->EndOfFile = pSMBr->EndOfFile;
981 pfile_info->NumberOfLinks = cpu_to_le32(1);
982 }
983 }
984
985 cifs_buf_release(pSMB);
986 if (rc == -EAGAIN)
987 goto openRetry;
988 return rc;
989 }
990
991 int
992 CIFSSMBRead(const int xid, struct cifsTconInfo *tcon,
993 const int netfid, const unsigned int count,
994 const __u64 lseek, unsigned int *nbytes, char **buf,
995 int * pbuf_type)
996 {
997 int rc = -EACCES;
998 READ_REQ *pSMB = NULL;
999 READ_RSP *pSMBr = NULL;
1000 char *pReadData = NULL;
1001 int wct;
1002 int resp_buf_type = 0;
1003 struct kvec iov[1];
1004
1005 cFYI(1,("Reading %d bytes on fid %d",count,netfid));
1006 if(tcon->ses->capabilities & CAP_LARGE_FILES)
1007 wct = 12;
1008 else
1009 wct = 10; /* old style read */
1010
1011 *nbytes = 0;
1012 rc = small_smb_init(SMB_COM_READ_ANDX, wct, tcon, (void **) &pSMB);
1013 if (rc)
1014 return rc;
1015
1016 /* tcon and ses pointer are checked in smb_init */
1017 if (tcon->ses->server == NULL)
1018 return -ECONNABORTED;
1019
1020 pSMB->AndXCommand = 0xFF; /* none */
1021 pSMB->Fid = netfid;
1022 pSMB->OffsetLow = cpu_to_le32(lseek & 0xFFFFFFFF);
1023 if(wct == 12)
1024 pSMB->OffsetHigh = cpu_to_le32(lseek >> 32);
1025 else if((lseek >> 32) > 0) /* can not handle this big offset for old */
1026 return -EIO;
1027
1028 pSMB->Remaining = 0;
1029 pSMB->MaxCount = cpu_to_le16(count & 0xFFFF);
1030 pSMB->MaxCountHigh = cpu_to_le32(count >> 16);
1031 if(wct == 12)
1032 pSMB->ByteCount = 0; /* no need to do le conversion since 0 */
1033 else {
1034 /* old style read */
1035 struct smb_com_readx_req * pSMBW =
1036 (struct smb_com_readx_req *)pSMB;
1037 pSMBW->ByteCount = 0;
1038 }
1039
1040 iov[0].iov_base = (char *)pSMB;
1041 iov[0].iov_len = pSMB->hdr.smb_buf_length + 4;
1042 rc = SendReceive2(xid, tcon->ses, iov,
1043 1 /* num iovecs */,
1044 &resp_buf_type, 0);
1045 cifs_stats_inc(&tcon->num_reads);
1046 pSMBr = (READ_RSP *)iov[0].iov_base;
1047 if (rc) {
1048 cERROR(1, ("Send error in read = %d", rc));
1049 } else {
1050 int data_length = le16_to_cpu(pSMBr->DataLengthHigh);
1051 data_length = data_length << 16;
1052 data_length += le16_to_cpu(pSMBr->DataLength);
1053 *nbytes = data_length;
1054
1055 /*check that DataLength would not go beyond end of SMB */
1056 if ((data_length > CIFSMaxBufSize)
1057 || (data_length > count)) {
1058 cFYI(1,("bad length %d for count %d",data_length,count));
1059 rc = -EIO;
1060 *nbytes = 0;
1061 } else {
1062 pReadData = (char *) (&pSMBr->hdr.Protocol) +
1063 le16_to_cpu(pSMBr->DataOffset);
1064 /* if(rc = copy_to_user(buf, pReadData, data_length)) {
1065 cERROR(1,("Faulting on read rc = %d",rc));
1066 rc = -EFAULT;
1067 }*/ /* can not use copy_to_user when using page cache*/
1068 if(*buf)
1069 memcpy(*buf,pReadData,data_length);
1070 }
1071 }
1072
1073 /* cifs_small_buf_release(pSMB); */ /* Freed earlier now in SendReceive2 */
1074 if(*buf) {
1075 if(resp_buf_type == CIFS_SMALL_BUFFER)
1076 cifs_small_buf_release(iov[0].iov_base);
1077 else if(resp_buf_type == CIFS_LARGE_BUFFER)
1078 cifs_buf_release(iov[0].iov_base);
1079 } else if(resp_buf_type != CIFS_NO_BUFFER) {
1080 /* return buffer to caller to free */
1081 *buf = iov[0].iov_base;
1082 if(resp_buf_type == CIFS_SMALL_BUFFER)
1083 *pbuf_type = CIFS_SMALL_BUFFER;
1084 else if(resp_buf_type == CIFS_LARGE_BUFFER)
1085 *pbuf_type = CIFS_LARGE_BUFFER;
1086 } /* else no valid buffer on return - leave as null */
1087
1088 /* Note: On -EAGAIN error only caller can retry on handle based calls
1089 since file handle passed in no longer valid */
1090 return rc;
1091 }
1092
1093
1094 int
1095 CIFSSMBWrite(const int xid, struct cifsTconInfo *tcon,
1096 const int netfid, const unsigned int count,
1097 const __u64 offset, unsigned int *nbytes, const char *buf,
1098 const char __user * ubuf, const int long_op)
1099 {
1100 int rc = -EACCES;
1101 WRITE_REQ *pSMB = NULL;
1102 WRITE_RSP *pSMBr = NULL;
1103 int bytes_returned, wct;
1104 __u32 bytes_sent;
1105 __u16 byte_count;
1106
1107 /* cFYI(1,("write at %lld %d bytes",offset,count));*/
1108 if(tcon->ses == NULL)
1109 return -ECONNABORTED;
1110
1111 if(tcon->ses->capabilities & CAP_LARGE_FILES)
1112 wct = 14;
1113 else
1114 wct = 12;
1115
1116 rc = smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **) &pSMB,
1117 (void **) &pSMBr);
1118 if (rc)
1119 return rc;
1120 /* tcon and ses pointer are checked in smb_init */
1121 if (tcon->ses->server == NULL)
1122 return -ECONNABORTED;
1123
1124 pSMB->AndXCommand = 0xFF; /* none */
1125 pSMB->Fid = netfid;
1126 pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF);
1127 if(wct == 14)
1128 pSMB->OffsetHigh = cpu_to_le32(offset >> 32);
1129 else if((offset >> 32) > 0) /* can not handle this big offset for old */
1130 return -EIO;
1131
1132 pSMB->Reserved = 0xFFFFFFFF;
1133 pSMB->WriteMode = 0;
1134 pSMB->Remaining = 0;
1135
1136 /* Can increase buffer size if buffer is big enough in some cases - ie we
1137 can send more if LARGE_WRITE_X capability returned by the server and if
1138 our buffer is big enough or if we convert to iovecs on socket writes
1139 and eliminate the copy to the CIFS buffer */
1140 if(tcon->ses->capabilities & CAP_LARGE_WRITE_X) {
1141 bytes_sent = min_t(const unsigned int, CIFSMaxBufSize, count);
1142 } else {
1143 bytes_sent = (tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE)
1144 & ~0xFF;
1145 }
1146
1147 if (bytes_sent > count)
1148 bytes_sent = count;
1149 pSMB->DataOffset =
1150 cpu_to_le16(offsetof(struct smb_com_write_req,Data) - 4);
1151 if(buf)
1152 memcpy(pSMB->Data,buf,bytes_sent);
1153 else if(ubuf) {
1154 if(copy_from_user(pSMB->Data,ubuf,bytes_sent)) {
1155 cifs_buf_release(pSMB);
1156 return -EFAULT;
1157 }
1158 } else if (count != 0) {
1159 /* No buffer */
1160 cifs_buf_release(pSMB);
1161 return -EINVAL;
1162 } /* else setting file size with write of zero bytes */
1163 if(wct == 14)
1164 byte_count = bytes_sent + 1; /* pad */
1165 else /* wct == 12 */ {
1166 byte_count = bytes_sent + 5; /* bigger pad, smaller smb hdr */
1167 }
1168 pSMB->DataLengthLow = cpu_to_le16(bytes_sent & 0xFFFF);
1169 pSMB->DataLengthHigh = cpu_to_le16(bytes_sent >> 16);
1170 pSMB->hdr.smb_buf_length += byte_count;
1171
1172 if(wct == 14)
1173 pSMB->ByteCount = cpu_to_le16(byte_count);
1174 else { /* old style write has byte count 4 bytes earlier so 4 bytes pad */
1175 struct smb_com_writex_req * pSMBW =
1176 (struct smb_com_writex_req *)pSMB;
1177 pSMBW->ByteCount = cpu_to_le16(byte_count);
1178 }
1179
1180 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
1181 (struct smb_hdr *) pSMBr, &bytes_returned, long_op);
1182 cifs_stats_inc(&tcon->num_writes);
1183 if (rc) {
1184 cFYI(1, ("Send error in write = %d", rc));
1185 *nbytes = 0;
1186 } else {
1187 *nbytes = le16_to_cpu(pSMBr->CountHigh);
1188 *nbytes = (*nbytes) << 16;
1189 *nbytes += le16_to_cpu(pSMBr->Count);
1190 }
1191
1192 cifs_buf_release(pSMB);
1193
1194 /* Note: On -EAGAIN error only caller can retry on handle based calls
1195 since file handle passed in no longer valid */
1196
1197 return rc;
1198 }
1199
1200 int
1201 CIFSSMBWrite2(const int xid, struct cifsTconInfo *tcon,
1202 const int netfid, const unsigned int count,
1203 const __u64 offset, unsigned int *nbytes, struct kvec *iov,
1204 int n_vec, const int long_op)
1205 {
1206 int rc = -EACCES;
1207 WRITE_REQ *pSMB = NULL;
1208 int wct;
1209 int smb_hdr_len;
1210 int resp_buf_type = 0;
1211
1212 cFYI(1,("write2 at %lld %d bytes", (long long)offset, count));
1213
1214 if(tcon->ses->capabilities & CAP_LARGE_FILES)
1215 wct = 14;
1216 else
1217 wct = 12;
1218 rc = small_smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **) &pSMB);
1219 if (rc)
1220 return rc;
1221 /* tcon and ses pointer are checked in smb_init */
1222 if (tcon->ses->server == NULL)
1223 return -ECONNABORTED;
1224
1225 pSMB->AndXCommand = 0xFF; /* none */
1226 pSMB->Fid = netfid;
1227 pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF);
1228 if(wct == 14)
1229 pSMB->OffsetHigh = cpu_to_le32(offset >> 32);
1230 else if((offset >> 32) > 0) /* can not handle this big offset for old */
1231 return -EIO;
1232 pSMB->Reserved = 0xFFFFFFFF;
1233 pSMB->WriteMode = 0;
1234 pSMB->Remaining = 0;
1235
1236 pSMB->DataOffset =
1237 cpu_to_le16(offsetof(struct smb_com_write_req,Data) - 4);
1238
1239 pSMB->DataLengthLow = cpu_to_le16(count & 0xFFFF);
1240 pSMB->DataLengthHigh = cpu_to_le16(count >> 16);
1241 smb_hdr_len = pSMB->hdr.smb_buf_length + 1; /* hdr + 1 byte pad */
1242 if(wct == 14)
1243 pSMB->hdr.smb_buf_length += count+1;
1244 else /* wct == 12 */
1245 pSMB->hdr.smb_buf_length += count+5; /* smb data starts later */
1246 if(wct == 14)
1247 pSMB->ByteCount = cpu_to_le16(count + 1);
1248 else /* wct == 12 */ /* bigger pad, smaller smb hdr, keep offset ok */ {
1249 struct smb_com_writex_req * pSMBW =
1250 (struct smb_com_writex_req *)pSMB;
1251 pSMBW->ByteCount = cpu_to_le16(count + 5);
1252 }
1253 iov[0].iov_base = pSMB;
1254 if(wct == 14)
1255 iov[0].iov_len = smb_hdr_len + 4;
1256 else /* wct == 12 pad bigger by four bytes */
1257 iov[0].iov_len = smb_hdr_len + 8;
1258
1259
1260 rc = SendReceive2(xid, tcon->ses, iov, n_vec + 1, &resp_buf_type,
1261 long_op);
1262 cifs_stats_inc(&tcon->num_writes);
1263 if (rc) {
1264 cFYI(1, ("Send error Write2 = %d", rc));
1265 *nbytes = 0;
1266 } else if(resp_buf_type == 0) {
1267 /* presumably this can not happen, but best to be safe */
1268 rc = -EIO;
1269 *nbytes = 0;
1270 } else {
1271 WRITE_RSP * pSMBr = (WRITE_RSP *)iov[0].iov_base;
1272 *nbytes = le16_to_cpu(pSMBr->CountHigh);
1273 *nbytes = (*nbytes) << 16;
1274 *nbytes += le16_to_cpu(pSMBr->Count);
1275 }
1276
1277 /* cifs_small_buf_release(pSMB); */ /* Freed earlier now in SendReceive2 */
1278 if(resp_buf_type == CIFS_SMALL_BUFFER)
1279 cifs_small_buf_release(iov[0].iov_base);
1280 else if(resp_buf_type == CIFS_LARGE_BUFFER)
1281 cifs_buf_release(iov[0].iov_base);
1282
1283 /* Note: On -EAGAIN error only caller can retry on handle based calls
1284 since file handle passed in no longer valid */
1285
1286 return rc;
1287 }
1288
1289
1290 int
1291 CIFSSMBLock(const int xid, struct cifsTconInfo *tcon,
1292 const __u16 smb_file_id, const __u64 len,
1293 const __u64 offset, const __u32 numUnlock,
1294 const __u32 numLock, const __u8 lockType, const int waitFlag)
1295 {
1296 int rc = 0;
1297 LOCK_REQ *pSMB = NULL;
1298 LOCK_RSP *pSMBr = NULL;
1299 int bytes_returned;
1300 int timeout = 0;
1301 __u16 count;
1302
1303 cFYI(1, ("In CIFSSMBLock - timeout %d numLock %d",waitFlag,numLock));
1304 rc = small_smb_init(SMB_COM_LOCKING_ANDX, 8, tcon, (void **) &pSMB);
1305
1306 if (rc)
1307 return rc;
1308
1309 pSMBr = (LOCK_RSP *)pSMB; /* BB removeme BB */
1310
1311 if(lockType == LOCKING_ANDX_OPLOCK_RELEASE) {
1312 timeout = -1; /* no response expected */
1313 pSMB->Timeout = 0;
1314 } else if (waitFlag == TRUE) {
1315 timeout = 3; /* blocking operation, no timeout */
1316 pSMB->Timeout = cpu_to_le32(-1);/* blocking - do not time out */
1317 } else {
1318 pSMB->Timeout = 0;
1319 }
1320
1321 pSMB->NumberOfLocks = cpu_to_le16(numLock);
1322 pSMB->NumberOfUnlocks = cpu_to_le16(numUnlock);
1323 pSMB->LockType = lockType;
1324 pSMB->AndXCommand = 0xFF; /* none */
1325 pSMB->Fid = smb_file_id; /* netfid stays le */
1326
1327 if((numLock != 0) || (numUnlock != 0)) {
1328 pSMB->Locks[0].Pid = cpu_to_le16(current->tgid);
1329 /* BB where to store pid high? */
1330 pSMB->Locks[0].LengthLow = cpu_to_le32((u32)len);
1331 pSMB->Locks[0].LengthHigh = cpu_to_le32((u32)(len>>32));
1332 pSMB->Locks[0].OffsetLow = cpu_to_le32((u32)offset);
1333 pSMB->Locks[0].OffsetHigh = cpu_to_le32((u32)(offset>>32));
1334 count = sizeof(LOCKING_ANDX_RANGE);
1335 } else {
1336 /* oplock break */
1337 count = 0;
1338 }
1339 pSMB->hdr.smb_buf_length += count;
1340 pSMB->ByteCount = cpu_to_le16(count);
1341
1342 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
1343 (struct smb_hdr *) pSMBr, &bytes_returned, timeout);
1344 cifs_stats_inc(&tcon->num_locks);
1345 if (rc) {
1346 cFYI(1, ("Send error in Lock = %d", rc));
1347 }
1348 cifs_small_buf_release(pSMB);
1349
1350 /* Note: On -EAGAIN error only caller can retry on handle based calls
1351 since file handle passed in no longer valid */
1352 return rc;
1353 }
1354
1355 int
1356 CIFSSMBPosixLock(const int xid, struct cifsTconInfo *tcon,
1357 const __u16 smb_file_id, const int get_flag, const __u64 len,
1358 const __u64 lkoffset, const __u16 lock_type, const int waitFlag)
1359 {
1360 struct smb_com_transaction2_sfi_req *pSMB = NULL;
1361 struct smb_com_transaction2_sfi_rsp *pSMBr = NULL;
1362 char *data_offset;
1363 struct cifs_posix_lock *parm_data;
1364 int rc = 0;
1365 int bytes_returned = 0;
1366 __u16 params, param_offset, offset, byte_count, count;
1367
1368 cFYI(1, ("Posix Lock"));
1369 rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB);
1370
1371 if (rc)
1372 return rc;
1373
1374 pSMBr = (struct smb_com_transaction2_sfi_rsp *)pSMB;
1375
1376 params = 6;
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_sfi_req, Fid) - 4;
1383 offset = param_offset + params;
1384
1385 data_offset = (char *) (&pSMB->hdr.Protocol) + offset;
1386
1387 count = sizeof(struct cifs_posix_lock);
1388 pSMB->MaxParameterCount = cpu_to_le16(2);
1389 pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB PDU from sess */
1390 pSMB->SetupCount = 1;
1391 pSMB->Reserved3 = 0;
1392 if(get_flag)
1393 pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION);
1394 else
1395 pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION);
1396 byte_count = 3 /* pad */ + params + count;
1397 pSMB->DataCount = cpu_to_le16(count);
1398 pSMB->ParameterCount = cpu_to_le16(params);
1399 pSMB->TotalDataCount = pSMB->DataCount;
1400 pSMB->TotalParameterCount = pSMB->ParameterCount;
1401 pSMB->ParameterOffset = cpu_to_le16(param_offset);
1402 parm_data = (struct cifs_posix_lock *)
1403 (((char *) &pSMB->hdr.Protocol) + offset);
1404
1405 parm_data->lock_type = cpu_to_le16(lock_type);
1406 if(waitFlag)
1407 parm_data->lock_flags = 1;
1408 parm_data->pid = cpu_to_le32(current->tgid);
1409 parm_data->start = lkoffset;
1410 parm_data->length = len; /* normalize negative numbers */
1411
1412 pSMB->DataOffset = cpu_to_le16(offset);
1413 pSMB->Fid = smb_file_id;
1414 pSMB->InformationLevel = cpu_to_le16(SMB_SET_POSIX_LOCK);
1415 pSMB->Reserved4 = 0;
1416 pSMB->hdr.smb_buf_length += byte_count;
1417 pSMB->ByteCount = cpu_to_le16(byte_count);
1418 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
1419 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
1420 if (rc) {
1421 cFYI(1, ("Send error in Posix Lock = %d", rc));
1422 }
1423
1424 if (pSMB)
1425 cifs_small_buf_release(pSMB);
1426
1427 /* Note: On -EAGAIN error only caller can retry on handle based calls
1428 since file handle passed in no longer valid */
1429
1430 return rc;
1431 }
1432
1433
1434 int
1435 CIFSSMBClose(const int xid, struct cifsTconInfo *tcon, int smb_file_id)
1436 {
1437 int rc = 0;
1438 CLOSE_REQ *pSMB = NULL;
1439 CLOSE_RSP *pSMBr = NULL;
1440 int bytes_returned;
1441 cFYI(1, ("In CIFSSMBClose"));
1442
1443 /* do not retry on dead session on close */
1444 rc = small_smb_init(SMB_COM_CLOSE, 3, tcon, (void **) &pSMB);
1445 if(rc == -EAGAIN)
1446 return 0;
1447 if (rc)
1448 return rc;
1449
1450 pSMBr = (CLOSE_RSP *)pSMB; /* BB removeme BB */
1451
1452 pSMB->FileID = (__u16) smb_file_id;
1453 pSMB->LastWriteTime = 0;
1454 pSMB->ByteCount = 0;
1455 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
1456 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
1457 cifs_stats_inc(&tcon->num_closes);
1458 if (rc) {
1459 if(rc!=-EINTR) {
1460 /* EINTR is expected when user ctl-c to kill app */
1461 cERROR(1, ("Send error in Close = %d", rc));
1462 }
1463 }
1464
1465 cifs_small_buf_release(pSMB);
1466
1467 /* Since session is dead, file will be closed on server already */
1468 if(rc == -EAGAIN)
1469 rc = 0;
1470
1471 return rc;
1472 }
1473
1474 int
1475 CIFSSMBRename(const int xid, struct cifsTconInfo *tcon,
1476 const char *fromName, const char *toName,
1477 const struct nls_table *nls_codepage, int remap)
1478 {
1479 int rc = 0;
1480 RENAME_REQ *pSMB = NULL;
1481 RENAME_RSP *pSMBr = NULL;
1482 int bytes_returned;
1483 int name_len, name_len2;
1484 __u16 count;
1485
1486 cFYI(1, ("In CIFSSMBRename"));
1487 renameRetry:
1488 rc = smb_init(SMB_COM_RENAME, 1, tcon, (void **) &pSMB,
1489 (void **) &pSMBr);
1490 if (rc)
1491 return rc;
1492
1493 pSMB->BufferFormat = 0x04;
1494 pSMB->SearchAttributes =
1495 cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM |
1496 ATTR_DIRECTORY);
1497
1498 if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
1499 name_len =
1500 cifsConvertToUCS((__le16 *) pSMB->OldFileName, fromName,
1501 PATH_MAX, nls_codepage, remap);
1502 name_len++; /* trailing null */
1503 name_len *= 2;
1504 pSMB->OldFileName[name_len] = 0x04; /* pad */
1505 /* protocol requires ASCII signature byte on Unicode string */
1506 pSMB->OldFileName[name_len + 1] = 0x00;
1507 name_len2 =
1508 cifsConvertToUCS((__le16 *) &pSMB->OldFileName[name_len + 2],
1509 toName, PATH_MAX, nls_codepage, remap);
1510 name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ;
1511 name_len2 *= 2; /* convert to bytes */
1512 } else { /* BB improve the check for buffer overruns BB */
1513 name_len = strnlen(fromName, PATH_MAX);
1514 name_len++; /* trailing null */
1515 strncpy(pSMB->OldFileName, fromName, name_len);
1516 name_len2 = strnlen(toName, PATH_MAX);
1517 name_len2++; /* trailing null */
1518 pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */
1519 strncpy(&pSMB->OldFileName[name_len + 1], toName, name_len2);
1520 name_len2++; /* trailing null */
1521 name_len2++; /* signature byte */
1522 }
1523
1524 count = 1 /* 1st signature byte */ + name_len + name_len2;
1525 pSMB->hdr.smb_buf_length += count;
1526 pSMB->ByteCount = cpu_to_le16(count);
1527
1528 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
1529 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
1530 cifs_stats_inc(&tcon->num_renames);
1531 if (rc) {
1532 cFYI(1, ("Send error in rename = %d", rc));
1533 }
1534
1535 cifs_buf_release(pSMB);
1536
1537 if (rc == -EAGAIN)
1538 goto renameRetry;
1539
1540 return rc;
1541 }
1542
1543 int CIFSSMBRenameOpenFile(const int xid,struct cifsTconInfo *pTcon,
1544 int netfid, char * target_name,
1545 const struct nls_table * nls_codepage, int remap)
1546 {
1547 struct smb_com_transaction2_sfi_req *pSMB = NULL;
1548 struct smb_com_transaction2_sfi_rsp *pSMBr = NULL;
1549 struct set_file_rename * rename_info;
1550 char *data_offset;
1551 char dummy_string[30];
1552 int rc = 0;
1553 int bytes_returned = 0;
1554 int len_of_str;
1555 __u16 params, param_offset, offset, count, byte_count;
1556
1557 cFYI(1, ("Rename to File by handle"));
1558 rc = smb_init(SMB_COM_TRANSACTION2, 15, pTcon, (void **) &pSMB,
1559 (void **) &pSMBr);
1560 if (rc)
1561 return rc;
1562
1563 params = 6;
1564 pSMB->MaxSetupCount = 0;
1565 pSMB->Reserved = 0;
1566 pSMB->Flags = 0;
1567 pSMB->Timeout = 0;
1568 pSMB->Reserved2 = 0;
1569 param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4;
1570 offset = param_offset + params;
1571
1572 data_offset = (char *) (&pSMB->hdr.Protocol) + offset;
1573 rename_info = (struct set_file_rename *) data_offset;
1574 pSMB->MaxParameterCount = cpu_to_le16(2);
1575 pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB PDU from sess */
1576 pSMB->SetupCount = 1;
1577 pSMB->Reserved3 = 0;
1578 pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION);
1579 byte_count = 3 /* pad */ + params;
1580 pSMB->ParameterCount = cpu_to_le16(params);
1581 pSMB->TotalParameterCount = pSMB->ParameterCount;
1582 pSMB->ParameterOffset = cpu_to_le16(param_offset);
1583 pSMB->DataOffset = cpu_to_le16(offset);
1584 /* construct random name ".cifs_tmp<inodenum><mid>" */
1585 rename_info->overwrite = cpu_to_le32(1);
1586 rename_info->root_fid = 0;
1587 /* unicode only call */
1588 if(target_name == NULL) {
1589 sprintf(dummy_string,"cifs%x",pSMB->hdr.Mid);
1590 len_of_str = cifsConvertToUCS((__le16 *)rename_info->target_name,
1591 dummy_string, 24, nls_codepage, remap);
1592 } else {
1593 len_of_str = cifsConvertToUCS((__le16 *)rename_info->target_name,
1594 target_name, PATH_MAX, nls_codepage, remap);
1595 }
1596 rename_info->target_name_len = cpu_to_le32(2 * len_of_str);
1597 count = 12 /* sizeof(struct set_file_rename) */ + (2 * len_of_str) + 2;
1598 byte_count += count;
1599 pSMB->DataCount = cpu_to_le16(count);
1600 pSMB->TotalDataCount = pSMB->DataCount;
1601 pSMB->Fid = netfid;
1602 pSMB->InformationLevel =
1603 cpu_to_le16(SMB_SET_FILE_RENAME_INFORMATION);
1604 pSMB->Reserved4 = 0;
1605 pSMB->hdr.smb_buf_length += byte_count;
1606 pSMB->ByteCount = cpu_to_le16(byte_count);
1607 rc = SendReceive(xid, pTcon->ses, (struct smb_hdr *) pSMB,
1608 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
1609 cifs_stats_inc(&pTcon->num_t2renames);
1610 if (rc) {
1611 cFYI(1,("Send error in Rename (by file handle) = %d", rc));
1612 }
1613
1614 cifs_buf_release(pSMB);
1615
1616 /* Note: On -EAGAIN error only caller can retry on handle based calls
1617 since file handle passed in no longer valid */
1618
1619 return rc;
1620 }
1621
1622 int
1623 CIFSSMBCopy(const int xid, struct cifsTconInfo *tcon, const char * fromName,
1624 const __u16 target_tid, const char *toName, const int flags,
1625 const struct nls_table *nls_codepage, int remap)
1626 {
1627 int rc = 0;
1628 COPY_REQ *pSMB = NULL;
1629 COPY_RSP *pSMBr = NULL;
1630 int bytes_returned;
1631 int name_len, name_len2;
1632 __u16 count;
1633
1634 cFYI(1, ("In CIFSSMBCopy"));
1635 copyRetry:
1636 rc = smb_init(SMB_COM_COPY, 1, tcon, (void **) &pSMB,
1637 (void **) &pSMBr);
1638 if (rc)
1639 return rc;
1640
1641 pSMB->BufferFormat = 0x04;
1642 pSMB->Tid2 = target_tid;
1643
1644 pSMB->Flags = cpu_to_le16(flags & COPY_TREE);
1645
1646 if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
1647 name_len = cifsConvertToUCS((__le16 *) pSMB->OldFileName,
1648 fromName, PATH_MAX, nls_codepage,
1649 remap);
1650 name_len++; /* trailing null */
1651 name_len *= 2;
1652 pSMB->OldFileName[name_len] = 0x04; /* pad */
1653 /* protocol requires ASCII signature byte on Unicode string */
1654 pSMB->OldFileName[name_len + 1] = 0x00;
1655 name_len2 = cifsConvertToUCS((__le16 *)&pSMB->OldFileName[name_len + 2],
1656 toName, PATH_MAX, nls_codepage, remap);
1657 name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ;
1658 name_len2 *= 2; /* convert to bytes */
1659 } else { /* BB improve the check for buffer overruns BB */
1660 name_len = strnlen(fromName, PATH_MAX);
1661 name_len++; /* trailing null */
1662 strncpy(pSMB->OldFileName, fromName, name_len);
1663 name_len2 = strnlen(toName, PATH_MAX);
1664 name_len2++; /* trailing null */
1665 pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */
1666 strncpy(&pSMB->OldFileName[name_len + 1], toName, name_len2);
1667 name_len2++; /* trailing null */
1668 name_len2++; /* signature byte */
1669 }
1670
1671 count = 1 /* 1st signature byte */ + name_len + name_len2;
1672 pSMB->hdr.smb_buf_length += count;
1673 pSMB->ByteCount = cpu_to_le16(count);
1674
1675 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
1676 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
1677 if (rc) {
1678 cFYI(1, ("Send error in copy = %d with %d files copied",
1679 rc, le16_to_cpu(pSMBr->CopyCount)));
1680 }
1681 if (pSMB)
1682 cifs_buf_release(pSMB);
1683
1684 if (rc == -EAGAIN)
1685 goto copyRetry;
1686
1687 return rc;
1688 }
1689
1690 int
1691 CIFSUnixCreateSymLink(const int xid, struct cifsTconInfo *tcon,
1692 const char *fromName, const char *toName,
1693 const struct nls_table *nls_codepage)
1694 {
1695 TRANSACTION2_SPI_REQ *pSMB = NULL;
1696 TRANSACTION2_SPI_RSP *pSMBr = NULL;
1697 char *data_offset;
1698 int name_len;
1699 int name_len_target;
1700 int rc = 0;
1701 int bytes_returned = 0;
1702 __u16 params, param_offset, offset, byte_count;
1703
1704 cFYI(1, ("In Symlink Unix style"));
1705 createSymLinkRetry:
1706 rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
1707 (void **) &pSMBr);
1708 if (rc)
1709 return rc;
1710
1711 if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
1712 name_len =
1713 cifs_strtoUCS((__le16 *) pSMB->FileName, fromName, PATH_MAX
1714 /* find define for this maxpathcomponent */
1715 , nls_codepage);
1716 name_len++; /* trailing null */
1717 name_len *= 2;
1718
1719 } else { /* BB improve the check for buffer overruns BB */
1720 name_len = strnlen(fromName, PATH_MAX);
1721 name_len++; /* trailing null */
1722 strncpy(pSMB->FileName, fromName, name_len);
1723 }
1724 params = 6 + name_len;
1725 pSMB->MaxSetupCount = 0;
1726 pSMB->Reserved = 0;
1727 pSMB->Flags = 0;
1728 pSMB->Timeout = 0;
1729 pSMB->Reserved2 = 0;
1730 param_offset = offsetof(struct smb_com_transaction2_spi_req,
1731 InformationLevel) - 4;
1732 offset = param_offset + params;
1733
1734 data_offset = (char *) (&pSMB->hdr.Protocol) + offset;
1735 if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
1736 name_len_target =
1737 cifs_strtoUCS((__le16 *) data_offset, toName, PATH_MAX
1738 /* find define for this maxpathcomponent */
1739 , nls_codepage);
1740 name_len_target++; /* trailing null */
1741 name_len_target *= 2;
1742 } else { /* BB improve the check for buffer overruns BB */
1743 name_len_target = strnlen(toName, PATH_MAX);
1744 name_len_target++; /* trailing null */
1745 strncpy(data_offset, toName, name_len_target);
1746 }
1747
1748 pSMB->MaxParameterCount = cpu_to_le16(2);
1749 /* BB find exact max on data count below from sess */
1750 pSMB->MaxDataCount = cpu_to_le16(1000);
1751 pSMB->SetupCount = 1;
1752 pSMB->Reserved3 = 0;
1753 pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION);
1754 byte_count = 3 /* pad */ + params + name_len_target;
1755 pSMB->DataCount = cpu_to_le16(name_len_target);
1756 pSMB->ParameterCount = cpu_to_le16(params);
1757 pSMB->TotalDataCount = pSMB->DataCount;
1758 pSMB->TotalParameterCount = pSMB->ParameterCount;
1759 pSMB->ParameterOffset = cpu_to_le16(param_offset);
1760 pSMB->DataOffset = cpu_to_le16(offset);
1761 pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_LINK);
1762 pSMB->Reserved4 = 0;
1763 pSMB->hdr.smb_buf_length += byte_count;
1764 pSMB->ByteCount = cpu_to_le16(byte_count);
1765 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
1766 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
1767 cifs_stats_inc(&tcon->num_symlinks);
1768 if (rc) {
1769 cFYI(1,
1770 ("Send error in SetPathInfo (create symlink) = %d",
1771 rc));
1772 }
1773
1774 if (pSMB)
1775 cifs_buf_release(pSMB);
1776
1777 if (rc == -EAGAIN)
1778 goto createSymLinkRetry;
1779
1780 return rc;
1781 }
1782
1783 int
1784 CIFSUnixCreateHardLink(const int xid, struct cifsTconInfo *tcon,
1785 const char *fromName, const char *toName,
1786 const struct nls_table *nls_codepage, int remap)
1787 {
1788 TRANSACTION2_SPI_REQ *pSMB = NULL;
1789 TRANSACTION2_SPI_RSP *pSMBr = NULL;
1790 char *data_offset;
1791 int name_len;
1792 int name_len_target;
1793 int rc = 0;
1794 int bytes_returned = 0;
1795 __u16 params, param_offset, offset, byte_count;
1796
1797 cFYI(1, ("In Create Hard link Unix style"));
1798 createHardLinkRetry:
1799 rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
1800 (void **) &pSMBr);
1801 if (rc)
1802 return rc;
1803
1804 if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
1805 name_len = cifsConvertToUCS((__le16 *) pSMB->FileName, toName,
1806 PATH_MAX, nls_codepage, remap);
1807 name_len++; /* trailing null */
1808 name_len *= 2;
1809
1810 } else { /* BB improve the check for buffer overruns BB */
1811 name_len = strnlen(toName, PATH_MAX);
1812 name_len++; /* trailing null */
1813 strncpy(pSMB->FileName, toName, name_len);
1814 }
1815 params = 6 + name_len;
1816 pSMB->MaxSetupCount = 0;
1817 pSMB->Reserved = 0;
1818 pSMB->Flags = 0;
1819 pSMB->Timeout = 0;
1820 pSMB->Reserved2 = 0;
1821 param_offset = offsetof(struct smb_com_transaction2_spi_req,
1822 InformationLevel) - 4;
1823 offset = param_offset + params;
1824
1825 data_offset = (char *) (&pSMB->hdr.Protocol) + offset;
1826 if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
1827 name_len_target =
1828 cifsConvertToUCS((__le16 *) data_offset, fromName, PATH_MAX,
1829 nls_codepage, remap);
1830 name_len_target++; /* trailing null */
1831 name_len_target *= 2;
1832 } else { /* BB improve the check for buffer overruns BB */
1833 name_len_target = strnlen(fromName, PATH_MAX);
1834 name_len_target++; /* trailing null */
1835 strncpy(data_offset, fromName, name_len_target);
1836 }
1837
1838 pSMB->MaxParameterCount = cpu_to_le16(2);
1839 /* BB find exact max on data count below from sess*/
1840 pSMB->MaxDataCount = cpu_to_le16(1000);
1841 pSMB->SetupCount = 1;
1842 pSMB->Reserved3 = 0;
1843 pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION);
1844 byte_count = 3 /* pad */ + params + name_len_target;
1845 pSMB->ParameterCount = cpu_to_le16(params);
1846 pSMB->TotalParameterCount = pSMB->ParameterCount;
1847 pSMB->DataCount = cpu_to_le16(name_len_target);
1848 pSMB->TotalDataCount = pSMB->DataCount;
1849 pSMB->ParameterOffset = cpu_to_le16(param_offset);
1850 pSMB->DataOffset = cpu_to_le16(offset);
1851 pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_HLINK);
1852 pSMB->Reserved4 = 0;
1853 pSMB->hdr.smb_buf_length += byte_count;
1854 pSMB->ByteCount = cpu_to_le16(byte_count);
1855 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
1856 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
1857 cifs_stats_inc(&tcon->num_hardlinks);
1858 if (rc) {
1859 cFYI(1, ("Send error in SetPathInfo (hard link) = %d", rc));
1860 }
1861
1862 cifs_buf_release(pSMB);
1863 if (rc == -EAGAIN)
1864 goto createHardLinkRetry;
1865
1866 return rc;
1867 }
1868
1869 int
1870 CIFSCreateHardLink(const int xid, struct cifsTconInfo *tcon,
1871 const char *fromName, const char *toName,
1872 const struct nls_table *nls_codepage, int remap)
1873 {
1874 int rc = 0;
1875 NT_RENAME_REQ *pSMB = NULL;
1876 RENAME_RSP *pSMBr = NULL;
1877 int bytes_returned;
1878 int name_len, name_len2;
1879 __u16 count;
1880
1881 cFYI(1, ("In CIFSCreateHardLink"));
1882 winCreateHardLinkRetry:
1883
1884 rc = smb_init(SMB_COM_NT_RENAME, 4, tcon, (void **) &pSMB,
1885 (void **) &pSMBr);
1886 if (rc)
1887 return rc;
1888
1889 pSMB->SearchAttributes =
1890 cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM |
1891 ATTR_DIRECTORY);
1892 pSMB->Flags = cpu_to_le16(CREATE_HARD_LINK);
1893 pSMB->ClusterCount = 0;
1894
1895 pSMB->BufferFormat = 0x04;
1896
1897 if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
1898 name_len =
1899 cifsConvertToUCS((__le16 *) pSMB->OldFileName, fromName,
1900 PATH_MAX, nls_codepage, remap);
1901 name_len++; /* trailing null */
1902 name_len *= 2;
1903 pSMB->OldFileName[name_len] = 0; /* pad */
1904 pSMB->OldFileName[name_len + 1] = 0x04;
1905 name_len2 =
1906 cifsConvertToUCS((__le16 *)&pSMB->OldFileName[name_len + 2],
1907 toName, PATH_MAX, nls_codepage, remap);
1908 name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ;
1909 name_len2 *= 2; /* convert to bytes */
1910 } else { /* BB improve the check for buffer overruns BB */
1911 name_len = strnlen(fromName, PATH_MAX);
1912 name_len++; /* trailing null */
1913 strncpy(pSMB->OldFileName, fromName, name_len);
1914 name_len2 = strnlen(toName, PATH_MAX);
1915 name_len2++; /* trailing null */
1916 pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */
1917 strncpy(&pSMB->OldFileName[name_len + 1], toName, name_len2);
1918 name_len2++; /* trailing null */
1919 name_len2++; /* signature byte */
1920 }
1921
1922 count = 1 /* string type byte */ + name_len + name_len2;
1923 pSMB->hdr.smb_buf_length += count;
1924 pSMB->ByteCount = cpu_to_le16(count);
1925
1926 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
1927 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
1928 cifs_stats_inc(&tcon->num_hardlinks);
1929 if (rc) {
1930 cFYI(1, ("Send error in hard link (NT rename) = %d", rc));
1931 }
1932 cifs_buf_release(pSMB);
1933 if (rc == -EAGAIN)
1934 goto winCreateHardLinkRetry;
1935
1936 return rc;
1937 }
1938
1939 int
1940 CIFSSMBUnixQuerySymLink(const int xid, struct cifsTconInfo *tcon,
1941 const unsigned char *searchName,
1942 char *symlinkinfo, const int buflen,
1943 const struct nls_table *nls_codepage)
1944 {
1945 /* SMB_QUERY_FILE_UNIX_LINK */
1946 TRANSACTION2_QPI_REQ *pSMB = NULL;
1947 TRANSACTION2_QPI_RSP *pSMBr = NULL;
1948 int rc = 0;
1949 int bytes_returned;
1950 int name_len;
1951 __u16 params, byte_count;
1952
1953 cFYI(1, ("In QPathSymLinkInfo (Unix) for path %s", searchName));
1954
1955 querySymLinkRetry:
1956 rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
1957 (void **) &pSMBr);
1958 if (rc)
1959 return rc;
1960
1961 if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
1962 name_len =
1963 cifs_strtoUCS((__le16 *) pSMB->FileName, searchName, PATH_MAX
1964 /* find define for this maxpathcomponent */
1965 , nls_codepage);
1966 name_len++; /* trailing null */
1967 name_len *= 2;
1968 } else { /* BB improve the check for buffer overruns BB */
1969 name_len = strnlen(searchName, PATH_MAX);
1970 name_len++; /* trailing null */
1971 strncpy(pSMB->FileName, searchName, name_len);
1972 }
1973
1974 params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ;
1975 pSMB->TotalDataCount = 0;
1976 pSMB->MaxParameterCount = cpu_to_le16(2);
1977 /* BB find exact max data count below from sess structure BB */
1978 pSMB->MaxDataCount = cpu_to_le16(4000);
1979 pSMB->MaxSetupCount = 0;
1980 pSMB->Reserved = 0;
1981 pSMB->Flags = 0;
1982 pSMB->Timeout = 0;
1983 pSMB->Reserved2 = 0;
1984 pSMB->ParameterOffset = cpu_to_le16(offsetof(
1985 struct smb_com_transaction2_qpi_req ,InformationLevel) - 4);
1986 pSMB->DataCount = 0;
1987 pSMB->DataOffset = 0;
1988 pSMB->SetupCount = 1;
1989 pSMB->Reserved3 = 0;
1990 pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION);
1991 byte_count = params + 1 /* pad */ ;
1992 pSMB->TotalParameterCount = cpu_to_le16(params);
1993 pSMB->ParameterCount = pSMB->TotalParameterCount;
1994 pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_LINK);
1995 pSMB->Reserved4 = 0;
1996 pSMB->hdr.smb_buf_length += byte_count;
1997 pSMB->ByteCount = cpu_to_le16(byte_count);
1998
1999 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
2000 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
2001 if (rc) {
2002 cFYI(1, ("Send error in QuerySymLinkInfo = %d", rc));
2003 } else {
2004 /* decode response */
2005
2006 rc = validate_t2((struct smb_t2_rsp *)pSMBr);
2007 if (rc || (pSMBr->ByteCount < 2))
2008 /* BB also check enough total bytes returned */
2009 rc = -EIO; /* bad smb */
2010 else {
2011 __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
2012 __u16 count = le16_to_cpu(pSMBr->t2.DataCount);
2013
2014 if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) {
2015 name_len = UniStrnlen((wchar_t *) ((char *)
2016 &pSMBr->hdr.Protocol +data_offset),
2017 min_t(const int, buflen,count) / 2);
2018 /* BB FIXME investigate remapping reserved chars here */
2019 cifs_strfromUCS_le(symlinkinfo,
2020 (__le16 *) ((char *)&pSMBr->hdr.Protocol +
2021 data_offset),
2022 name_len, nls_codepage);
2023 } else {
2024 strncpy(symlinkinfo,
2025 (char *) &pSMBr->hdr.Protocol +
2026 data_offset,
2027 min_t(const int, buflen, count));
2028 }
2029 symlinkinfo[buflen] = 0;
2030 /* just in case so calling code does not go off the end of buffer */
2031 }
2032 }
2033 cifs_buf_release(pSMB);
2034 if (rc == -EAGAIN)
2035 goto querySymLinkRetry;
2036 return rc;
2037 }
2038
2039 /* Initialize NT TRANSACT SMB into small smb request buffer.
2040 This assumes that all NT TRANSACTS that we init here have
2041 total parm and data under about 400 bytes (to fit in small cifs
2042 buffer size), which is the case so far, it easily fits. NB:
2043 Setup words themselves and ByteCount
2044 MaxSetupCount (size of returned setup area) and
2045 MaxParameterCount (returned parms size) must be set by caller */
2046 static int
2047 smb_init_ntransact(const __u16 sub_command, const int setup_count,
2048 const int parm_len, struct cifsTconInfo *tcon,
2049 void ** ret_buf)
2050 {
2051 int rc;
2052 __u32 temp_offset;
2053 struct smb_com_ntransact_req * pSMB;
2054
2055 rc = small_smb_init(SMB_COM_NT_TRANSACT, 19 + setup_count, tcon,
2056 (void **)&pSMB);
2057 if (rc)
2058 return rc;
2059 *ret_buf = (void *)pSMB;
2060 pSMB->Reserved = 0;
2061 pSMB->TotalParameterCount = cpu_to_le32(parm_len);
2062 pSMB->TotalDataCount = 0;
2063 pSMB->MaxDataCount = cpu_to_le32((tcon->ses->server->maxBuf -
2064 MAX_CIFS_HDR_SIZE) & 0xFFFFFF00);
2065 pSMB->ParameterCount = pSMB->TotalParameterCount;
2066 pSMB->DataCount = pSMB->TotalDataCount;
2067 temp_offset = offsetof(struct smb_com_ntransact_req, Parms) +
2068 (setup_count * 2) - 4 /* for rfc1001 length itself */;
2069 pSMB->ParameterOffset = cpu_to_le32(temp_offset);
2070 pSMB->DataOffset = cpu_to_le32(temp_offset + parm_len);
2071 pSMB->SetupCount = setup_count; /* no need to le convert byte fields */
2072 pSMB->SubCommand = cpu_to_le16(sub_command);
2073 return 0;
2074 }
2075
2076 static int
2077 validate_ntransact(char * buf, char ** ppparm, char ** ppdata,
2078 int * pdatalen, int * pparmlen)
2079 {
2080 char * end_of_smb;
2081 __u32 data_count, data_offset, parm_count, parm_offset;
2082 struct smb_com_ntransact_rsp * pSMBr;
2083
2084 if(buf == NULL)
2085 return -EINVAL;
2086
2087 pSMBr = (struct smb_com_ntransact_rsp *)buf;
2088
2089 /* ByteCount was converted from little endian in SendReceive */
2090 end_of_smb = 2 /* sizeof byte count */ + pSMBr->ByteCount +
2091 (char *)&pSMBr->ByteCount;
2092
2093
2094 data_offset = le32_to_cpu(pSMBr->DataOffset);
2095 data_count = le32_to_cpu(pSMBr->DataCount);
2096 parm_offset = le32_to_cpu(pSMBr->ParameterOffset);
2097 parm_count = le32_to_cpu(pSMBr->ParameterCount);
2098
2099 *ppparm = (char *)&pSMBr->hdr.Protocol + parm_offset;
2100 *ppdata = (char *)&pSMBr->hdr.Protocol + data_offset;
2101
2102 /* should we also check that parm and data areas do not overlap? */
2103 if(*ppparm > end_of_smb) {
2104 cFYI(1,("parms start after end of smb"));
2105 return -EINVAL;
2106 } else if(parm_count + *ppparm > end_of_smb) {
2107 cFYI(1,("parm end after end of smb"));
2108 return -EINVAL;
2109 } else if(*ppdata > end_of_smb) {
2110 cFYI(1,("data starts after end of smb"));
2111 return -EINVAL;
2112 } else if(data_count + *ppdata > end_of_smb) {
2113 cFYI(1,("data %p + count %d (%p) ends after end of smb %p start %p",
2114 *ppdata, data_count, (data_count + *ppdata), end_of_smb, pSMBr)); /* BB FIXME */
2115 return -EINVAL;
2116 } else if(parm_count + data_count > pSMBr->ByteCount) {
2117 cFYI(1,("parm count and data count larger than SMB"));
2118 return -EINVAL;
2119 }
2120 return 0;
2121 }
2122
2123 int
2124 CIFSSMBQueryReparseLinkInfo(const int xid, struct cifsTconInfo *tcon,
2125 const unsigned char *searchName,
2126 char *symlinkinfo, const int buflen,__u16 fid,
2127 const struct nls_table *nls_codepage)
2128 {
2129 int rc = 0;
2130 int bytes_returned;
2131 int name_len;
2132 struct smb_com_transaction_ioctl_req * pSMB;
2133 struct smb_com_transaction_ioctl_rsp * pSMBr;
2134
2135 cFYI(1, ("In Windows reparse style QueryLink for path %s", searchName));
2136 rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB,
2137 (void **) &pSMBr);
2138 if (rc)
2139 return rc;
2140
2141 pSMB->TotalParameterCount = 0 ;
2142 pSMB->TotalDataCount = 0;
2143 pSMB->MaxParameterCount = cpu_to_le32(2);
2144 /* BB find exact data count max from sess structure BB */
2145 pSMB->MaxDataCount = cpu_to_le32((tcon->ses->server->maxBuf -
2146 MAX_CIFS_HDR_SIZE) & 0xFFFFFF00);
2147 pSMB->MaxSetupCount = 4;
2148 pSMB->Reserved = 0;
2149 pSMB->ParameterOffset = 0;
2150 pSMB->DataCount = 0;
2151 pSMB->DataOffset = 0;
2152 pSMB->SetupCount = 4;
2153 pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_IOCTL);
2154 pSMB->ParameterCount = pSMB->TotalParameterCount;
2155 pSMB->FunctionCode = cpu_to_le32(FSCTL_GET_REPARSE_POINT);
2156 pSMB->IsFsctl = 1; /* FSCTL */
2157 pSMB->IsRootFlag = 0;
2158 pSMB->Fid = fid; /* file handle always le */
2159 pSMB->ByteCount = 0;
2160
2161 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
2162 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
2163 if (rc) {
2164 cFYI(1, ("Send error in QueryReparseLinkInfo = %d", rc));
2165 } else { /* decode response */
2166 __u32 data_offset = le32_to_cpu(pSMBr->DataOffset);
2167 __u32 data_count = le32_to_cpu(pSMBr->DataCount);
2168 if ((pSMBr->ByteCount < 2) || (data_offset > 512))
2169 /* BB also check enough total bytes returned */
2170 rc = -EIO; /* bad smb */
2171 else {
2172 if(data_count && (data_count < 2048)) {
2173 char * end_of_smb = 2 /* sizeof byte count */ +
2174 pSMBr->ByteCount +
2175 (char *)&pSMBr->ByteCount;
2176
2177 struct reparse_data * reparse_buf = (struct reparse_data *)
2178 ((char *)&pSMBr->hdr.Protocol + data_offset);
2179 if((char*)reparse_buf >= end_of_smb) {
2180 rc = -EIO;
2181 goto qreparse_out;
2182 }
2183 if((reparse_buf->LinkNamesBuf +
2184 reparse_buf->TargetNameOffset +
2185 reparse_buf->TargetNameLen) >
2186 end_of_smb) {
2187 cFYI(1,("reparse buf extended beyond SMB"));
2188 rc = -EIO;
2189 goto qreparse_out;
2190 }
2191
2192 if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) {
2193 name_len = UniStrnlen((wchar_t *)
2194 (reparse_buf->LinkNamesBuf +
2195 reparse_buf->TargetNameOffset),
2196 min(buflen/2, reparse_buf->TargetNameLen / 2));
2197 cifs_strfromUCS_le(symlinkinfo,
2198 (__le16 *) (reparse_buf->LinkNamesBuf +
2199 reparse_buf->TargetNameOffset),
2200 name_len, nls_codepage);
2201 } else { /* ASCII names */
2202 strncpy(symlinkinfo,reparse_buf->LinkNamesBuf +
2203 reparse_buf->TargetNameOffset,
2204 min_t(const int, buflen, reparse_buf->TargetNameLen));
2205 }
2206 } else {
2207 rc = -EIO;
2208 cFYI(1,("Invalid return data count on get reparse info ioctl"));
2209 }
2210 symlinkinfo[buflen] = 0; /* just in case so the caller
2211 does not go off the end of the buffer */
2212 cFYI(1,("readlink result - %s ",symlinkinfo));
2213 }
2214 }
2215 qreparse_out:
2216 cifs_buf_release(pSMB);
2217
2218 /* Note: On -EAGAIN error only caller can retry on handle based calls
2219 since file handle passed in no longer valid */
2220
2221 return rc;
2222 }
2223
2224 #ifdef CONFIG_CIFS_POSIX
2225
2226 /*Convert an Access Control Entry from wire format to local POSIX xattr format*/
2227 static void cifs_convert_ace(posix_acl_xattr_entry * ace, struct cifs_posix_ace * cifs_ace)
2228 {
2229 /* u8 cifs fields do not need le conversion */
2230 ace->e_perm = cpu_to_le16(cifs_ace->cifs_e_perm);
2231 ace->e_tag = cpu_to_le16(cifs_ace->cifs_e_tag);
2232 ace->e_id = cpu_to_le32(le64_to_cpu(cifs_ace->cifs_uid));
2233 /* cFYI(1,("perm %d tag %d id %d",ace->e_perm,ace->e_tag,ace->e_id)); */
2234
2235 return;
2236 }
2237
2238 /* Convert ACL from CIFS POSIX wire format to local Linux POSIX ACL xattr */
2239 static int cifs_copy_posix_acl(char * trgt,char * src, const int buflen,
2240 const int acl_type,const int size_of_data_area)
2241 {
2242 int size = 0;
2243 int i;
2244 __u16 count;
2245 struct cifs_posix_ace * pACE;
2246 struct cifs_posix_acl * cifs_acl = (struct cifs_posix_acl *)src;
2247 posix_acl_xattr_header * local_acl = (posix_acl_xattr_header *)trgt;
2248
2249 if (le16_to_cpu(cifs_acl->version) != CIFS_ACL_VERSION)
2250 return -EOPNOTSUPP;
2251
2252 if(acl_type & ACL_TYPE_ACCESS) {
2253 count = le16_to_cpu(cifs_acl->access_entry_count);
2254 pACE = &cifs_acl->ace_array[0];
2255 size = sizeof(struct cifs_posix_acl);
2256 size += sizeof(struct cifs_posix_ace) * count;
2257 /* check if we would go beyond end of SMB */
2258 if(size_of_data_area < size) {
2259 cFYI(1,("bad CIFS POSIX ACL size %d vs. %d",size_of_data_area,size));
2260 return -EINVAL;
2261 }
2262 } else if(acl_type & ACL_TYPE_DEFAULT) {
2263 count = le16_to_cpu(cifs_acl->access_entry_count);
2264 size = sizeof(struct cifs_posix_acl);
2265 size += sizeof(struct cifs_posix_ace) * count;
2266 /* skip past access ACEs to get to default ACEs */
2267 pACE = &cifs_acl->ace_array[count];
2268 count = le16_to_cpu(cifs_acl->default_entry_count);
2269 size += sizeof(struct cifs_posix_ace) * count;
2270 /* check if we would go beyond end of SMB */
2271 if(size_of_data_area < size)
2272 return -EINVAL;
2273 } else {
2274 /* illegal type */
2275 return -EINVAL;
2276 }
2277
2278 size = posix_acl_xattr_size(count);
2279 if((buflen == 0) || (local_acl == NULL)) {
2280 /* used to query ACL EA size */
2281 } else if(size > buflen) {
2282 return -ERANGE;
2283 } else /* buffer big enough */ {
2284 local_acl->a_version = cpu_to_le32(POSIX_ACL_XATTR_VERSION);
2285 for(i = 0;i < count ;i++) {
2286 cifs_convert_ace(&local_acl->a_entries[i],pACE);
2287 pACE ++;
2288 }
2289 }
2290 return size;
2291 }
2292
2293 static __u16 convert_ace_to_cifs_ace(struct cifs_posix_ace * cifs_ace,
2294 const posix_acl_xattr_entry * local_ace)
2295 {
2296 __u16 rc = 0; /* 0 = ACL converted ok */
2297
2298 cifs_ace->cifs_e_perm = le16_to_cpu(local_ace->e_perm);
2299 cifs_ace->cifs_e_tag = le16_to_cpu(local_ace->e_tag);
2300 /* BB is there a better way to handle the large uid? */
2301 if(local_ace->e_id == cpu_to_le32(-1)) {
2302 /* Probably no need to le convert -1 on any arch but can not hurt */
2303 cifs_ace->cifs_uid = cpu_to_le64(-1);
2304 } else
2305 cifs_ace->cifs_uid = cpu_to_le64(le32_to_cpu(local_ace->e_id));
2306 /*cFYI(1,("perm %d tag %d id %d",ace->e_perm,ace->e_tag,ace->e_id));*/
2307 return rc;
2308 }
2309
2310 /* Convert ACL from local Linux POSIX xattr to CIFS POSIX ACL wire format */
2311 static __u16 ACL_to_cifs_posix(char * parm_data,const char * pACL,const int buflen,
2312 const int acl_type)
2313 {
2314 __u16 rc = 0;
2315 struct cifs_posix_acl * cifs_acl = (struct cifs_posix_acl *)parm_data;
2316 posix_acl_xattr_header * local_acl = (posix_acl_xattr_header *)pACL;
2317 int count;
2318 int i;
2319
2320 if((buflen == 0) || (pACL == NULL) || (cifs_acl == NULL))
2321 return 0;
2322
2323 count = posix_acl_xattr_count((size_t)buflen);
2324 cFYI(1,("setting acl with %d entries from buf of length %d and version of %d",
2325 count, buflen, le32_to_cpu(local_acl->a_version)));
2326 if(le32_to_cpu(local_acl->a_version) != 2) {
2327 cFYI(1,("unknown POSIX ACL version %d",
2328 le32_to_cpu(local_acl->a_version)));
2329 return 0;
2330 }
2331 cifs_acl->version = cpu_to_le16(1);
2332 if(acl_type == ACL_TYPE_ACCESS)
2333 cifs_acl->access_entry_count = cpu_to_le16(count);
2334 else if(acl_type == ACL_TYPE_DEFAULT)
2335 cifs_acl->default_entry_count = cpu_to_le16(count);
2336 else {
2337 cFYI(1,("unknown ACL type %d",acl_type));
2338 return 0;
2339 }
2340 for(i=0;i<count;i++) {
2341 rc = convert_ace_to_cifs_ace(&cifs_acl->ace_array[i],
2342 &local_acl->a_entries[i]);
2343 if(rc != 0) {
2344 /* ACE not converted */
2345 break;
2346 }
2347 }
2348 if(rc == 0) {
2349 rc = (__u16)(count * sizeof(struct cifs_posix_ace));
2350 rc += sizeof(struct cifs_posix_acl);
2351 /* BB add check to make sure ACL does not overflow SMB */
2352 }
2353 return rc;
2354 }
2355
2356 int
2357 CIFSSMBGetPosixACL(const int xid, struct cifsTconInfo *tcon,
2358 const unsigned char *searchName,
2359 char *acl_inf, const int buflen, const int acl_type,
2360 const struct nls_table *nls_codepage, int remap)
2361 {
2362 /* SMB_QUERY_POSIX_ACL */
2363 TRANSACTION2_QPI_REQ *pSMB = NULL;
2364 TRANSACTION2_QPI_RSP *pSMBr = NULL;
2365 int rc = 0;
2366 int bytes_returned;
2367 int name_len;
2368 __u16 params, byte_count;
2369
2370 cFYI(1, ("In GetPosixACL (Unix) for path %s", searchName));
2371
2372 queryAclRetry:
2373 rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
2374 (void **) &pSMBr);
2375 if (rc)
2376 return rc;
2377
2378 if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
2379 name_len =
2380 cifsConvertToUCS((__le16 *) pSMB->FileName, searchName,
2381 PATH_MAX, nls_codepage, remap);
2382 name_len++; /* trailing null */
2383 name_len *= 2;
2384 pSMB->FileName[name_len] = 0;
2385 pSMB->FileName[name_len+1] = 0;
2386 } else { /* BB improve the check for buffer overruns BB */
2387 name_len = strnlen(searchName, PATH_MAX);
2388 name_len++; /* trailing null */
2389 strncpy(pSMB->FileName, searchName, name_len);
2390 }
2391
2392 params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ;
2393 pSMB->TotalDataCount = 0;
2394 pSMB->MaxParameterCount = cpu_to_le16(2);
2395 /* BB find exact max data count below from sess structure BB */
2396 pSMB->MaxDataCount = cpu_to_le16(4000);
2397 pSMB->MaxSetupCount = 0;
2398 pSMB->Reserved = 0;
2399 pSMB->Flags = 0;
2400 pSMB->Timeout = 0;
2401 pSMB->Reserved2 = 0;
2402 pSMB->ParameterOffset = cpu_to_le16(
2403 offsetof(struct smb_com_transaction2_qpi_req ,InformationLevel) - 4);
2404 pSMB->DataCount = 0;
2405 pSMB->DataOffset = 0;
2406 pSMB->SetupCount = 1;
2407 pSMB->Reserved3 = 0;
2408 pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION);
2409 byte_count = params + 1 /* pad */ ;
2410 pSMB->TotalParameterCount = cpu_to_le16(params);
2411 pSMB->ParameterCount = pSMB->TotalParameterCount;
2412 pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_POSIX_ACL);
2413 pSMB->Reserved4 = 0;
2414 pSMB->hdr.smb_buf_length += byte_count;
2415 pSMB->ByteCount = cpu_to_le16(byte_count);
2416
2417 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
2418 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
2419 cifs_stats_inc(&tcon->num_acl_get);
2420 if (rc) {
2421 cFYI(1, ("Send error in Query POSIX ACL = %d", rc));
2422 } else {
2423 /* decode response */
2424
2425 rc = validate_t2((struct smb_t2_rsp *)pSMBr);
2426 if (rc || (pSMBr->ByteCount < 2))
2427 /* BB also check enough total bytes returned */
2428 rc = -EIO; /* bad smb */
2429 else {
2430 __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
2431 __u16 count = le16_to_cpu(pSMBr->t2.DataCount);
2432 rc = cifs_copy_posix_acl(acl_inf,
2433 (char *)&pSMBr->hdr.Protocol+data_offset,
2434 buflen,acl_type,count);
2435 }
2436 }
2437 cifs_buf_release(pSMB);
2438 if (rc == -EAGAIN)
2439 goto queryAclRetry;
2440 return rc;
2441 }
2442
2443 int
2444 CIFSSMBSetPosixACL(const int xid, struct cifsTconInfo *tcon,
2445 const unsigned char *fileName,
2446 const char *local_acl, const int buflen,
2447 const int acl_type,
2448 const struct nls_table *nls_codepage, int remap)
2449 {
2450 struct smb_com_transaction2_spi_req *pSMB = NULL;
2451 struct smb_com_transaction2_spi_rsp *pSMBr = NULL;
2452 char *parm_data;
2453 int name_len;
2454 int rc = 0;
2455 int bytes_returned = 0;
2456 __u16 params, byte_count, data_count, param_offset, offset;
2457
2458 cFYI(1, ("In SetPosixACL (Unix) for path %s", fileName));
2459 setAclRetry:
2460 rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
2461 (void **) &pSMBr);
2462 if (rc)
2463 return rc;
2464 if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
2465 name_len =
2466 cifsConvertToUCS((__le16 *) pSMB->FileName, fileName,
2467 PATH_MAX, nls_codepage, remap);
2468 name_len++; /* trailing null */
2469 name_len *= 2;
2470 } else { /* BB improve the check for buffer overruns BB */
2471 name_len = strnlen(fileName, PATH_MAX);
2472 name_len++; /* trailing null */
2473 strncpy(pSMB->FileName, fileName, name_len);
2474 }
2475 params = 6 + name_len;
2476 pSMB->MaxParameterCount = cpu_to_le16(2);
2477 pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB size from sess */
2478 pSMB->MaxSetupCount = 0;
2479 pSMB->Reserved = 0;
2480 pSMB->Flags = 0;
2481 pSMB->Timeout = 0;
2482 pSMB->Reserved2 = 0;
2483 param_offset = offsetof(struct smb_com_transaction2_spi_req,
2484 InformationLevel) - 4;
2485 offset = param_offset + params;
2486 parm_data = ((char *) &pSMB->hdr.Protocol) + offset;
2487 pSMB->ParameterOffset = cpu_to_le16(param_offset);
2488
2489 /* convert to on the wire format for POSIX ACL */
2490 data_count = ACL_to_cifs_posix(parm_data,local_acl,buflen,acl_type);
2491
2492 if(data_count == 0) {
2493 rc = -EOPNOTSUPP;
2494 goto setACLerrorExit;
2495 }
2496 pSMB->DataOffset = cpu_to_le16(offset);
2497 pSMB->SetupCount = 1;
2498 pSMB->Reserved3 = 0;
2499 pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION);
2500 pSMB->InformationLevel = cpu_to_le16(SMB_SET_POSIX_ACL);
2501 byte_count = 3 /* pad */ + params + data_count;
2502 pSMB->DataCount = cpu_to_le16(data_count);
2503 pSMB->TotalDataCount = pSMB->DataCount;
2504 pSMB->ParameterCount = cpu_to_le16(params);
2505 pSMB->TotalParameterCount = pSMB->ParameterCount;
2506 pSMB->Reserved4 = 0;
2507 pSMB->hdr.smb_buf_length += byte_count;
2508 pSMB->ByteCount = cpu_to_le16(byte_count);
2509 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
2510 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
2511 if (rc) {
2512 cFYI(1, ("Set POSIX ACL returned %d", rc));
2513 }
2514
2515 setACLerrorExit:
2516 cifs_buf_release(pSMB);
2517 if (rc == -EAGAIN)
2518 goto setAclRetry;
2519 return rc;
2520 }
2521
2522 /* BB fix tabs in this function FIXME BB */
2523 int
2524 CIFSGetExtAttr(const int xid, struct cifsTconInfo *tcon,
2525 const int netfid, __u64 * pExtAttrBits, __u64 *pMask)
2526 {
2527 int rc = 0;
2528 struct smb_t2_qfi_req *pSMB = NULL;
2529 struct smb_t2_qfi_rsp *pSMBr = NULL;
2530 int bytes_returned;
2531 __u16 params, byte_count;
2532
2533 cFYI(1,("In GetExtAttr"));
2534 if(tcon == NULL)
2535 return -ENODEV;
2536
2537 GetExtAttrRetry:
2538 rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
2539 (void **) &pSMBr);
2540 if (rc)
2541 return rc;
2542
2543 params = 2 /* level */ +2 /* fid */;
2544 pSMB->t2.TotalDataCount = 0;
2545 pSMB->t2.MaxParameterCount = cpu_to_le16(4);
2546 /* BB find exact max data count below from sess structure BB */
2547 pSMB->t2.MaxDataCount = cpu_to_le16(4000);
2548 pSMB->t2.MaxSetupCount = 0;
2549 pSMB->t2.Reserved = 0;
2550 pSMB->t2.Flags = 0;
2551 pSMB->t2.Timeout = 0;
2552 pSMB->t2.Reserved2 = 0;
2553 pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req,
2554 Fid) - 4);
2555 pSMB->t2.DataCount = 0;
2556 pSMB->t2.DataOffset = 0;
2557 pSMB->t2.SetupCount = 1;
2558 pSMB->t2.Reserved3 = 0;
2559 pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION);
2560 byte_count = params + 1 /* pad */ ;
2561 pSMB->t2.TotalParameterCount = cpu_to_le16(params);
2562 pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount;
2563 pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_ATTR_FLAGS);
2564 pSMB->Pad = 0;
2565 pSMB->Fid = netfid;
2566 pSMB->hdr.smb_buf_length += byte_count;
2567 pSMB->t2.ByteCount = cpu_to_le16(byte_count);
2568
2569 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
2570 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
2571 if (rc) {
2572 cFYI(1, ("error %d in GetExtAttr", rc));
2573 } else {
2574 /* decode response */
2575 rc = validate_t2((struct smb_t2_rsp *)pSMBr);
2576 if (rc || (pSMBr->ByteCount < 2))
2577 /* BB also check enough total bytes returned */
2578 /* If rc should we check for EOPNOSUPP and
2579 disable the srvino flag? or in caller? */
2580 rc = -EIO; /* bad smb */
2581 else {
2582 __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
2583 __u16 count = le16_to_cpu(pSMBr->t2.DataCount);
2584 struct file_chattr_info * pfinfo;
2585 /* BB Do we need a cast or hash here ? */
2586 if(count != 16) {
2587 cFYI(1, ("Illegal size ret in GetExtAttr"));
2588 rc = -EIO;
2589 goto GetExtAttrOut;
2590 }
2591 pfinfo = (struct file_chattr_info *)
2592 (data_offset + (char *) &pSMBr->hdr.Protocol);
2593 *pExtAttrBits = le64_to_cpu(pfinfo->mode);
2594 *pMask = le64_to_cpu(pfinfo->mask);
2595 }
2596 }
2597 GetExtAttrOut:
2598 cifs_buf_release(pSMB);
2599 if (rc == -EAGAIN)
2600 goto GetExtAttrRetry;
2601 return rc;
2602 }
2603
2604
2605 #endif /* CONFIG_POSIX */
2606
2607
2608 /* security id for everyone */
2609 const struct cifs_sid sid_everyone = {1, 1, {0, 0, 0, 0, 0, 0}, {0, 0, 0, 0}};
2610 /* group users */
2611 const struct cifs_sid sid_user = {1, 2 , {0, 0, 0, 0, 0, 5}, {32, 545, 0, 0}};
2612
2613 /* Convert CIFS ACL to POSIX form */
2614 static int parse_sec_desc(struct cifs_sid * psec_desc, int acl_len)
2615 {
2616 return 0;
2617 }
2618
2619 /* Get Security Descriptor (by handle) from remote server for a file or dir */
2620 int
2621 CIFSSMBGetCIFSACL(const int xid, struct cifsTconInfo *tcon, __u16 fid,
2622 /* BB fix up return info */ char *acl_inf, const int buflen,
2623 const int acl_type /* ACCESS/DEFAULT not sure implication */)
2624 {
2625 int rc = 0;
2626 int buf_type = 0;
2627 QUERY_SEC_DESC_REQ * pSMB;
2628 struct kvec iov[1];
2629
2630 cFYI(1, ("GetCifsACL"));
2631
2632 rc = smb_init_ntransact(NT_TRANSACT_QUERY_SECURITY_DESC, 0,
2633 8 /* parm len */, tcon, (void **) &pSMB);
2634 if (rc)
2635 return rc;
2636
2637 pSMB->MaxParameterCount = cpu_to_le32(4);
2638 /* BB TEST with big acls that might need to be e.g. larger than 16K */
2639 pSMB->MaxSetupCount = 0;
2640 pSMB->Fid = fid; /* file handle always le */
2641 pSMB->AclFlags = cpu_to_le32(CIFS_ACL_OWNER | CIFS_ACL_GROUP |
2642 CIFS_ACL_DACL);
2643 pSMB->ByteCount = cpu_to_le16(11); /* 3 bytes pad + 8 bytes parm */
2644 pSMB->hdr.smb_buf_length += 11;
2645 iov[0].iov_base = (char *)pSMB;
2646 iov[0].iov_len = pSMB->hdr.smb_buf_length + 4;
2647
2648 rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovec */, &buf_type, 0);
2649 cifs_stats_inc(&tcon->num_acl_get);
2650 if (rc) {
2651 cFYI(1, ("Send error in QuerySecDesc = %d", rc));
2652 } else { /* decode response */
2653 struct cifs_sid * psec_desc;
2654 __le32 * parm;
2655 int parm_len;
2656 int data_len;
2657 int acl_len;
2658 struct smb_com_ntransact_rsp * pSMBr;
2659
2660 /* validate_nttransact */
2661 rc = validate_ntransact(iov[0].iov_base, (char **)&parm,
2662 (char **)&psec_desc,
2663 &parm_len, &data_len);
2664
2665 if(rc)
2666 goto qsec_out;
2667 pSMBr = (struct smb_com_ntransact_rsp *)iov[0].iov_base;
2668
2669 cERROR(1,("smb %p parm %p data %p",pSMBr,parm,psec_desc)); /* BB removeme BB */
2670
2671 if (le32_to_cpu(pSMBr->ParameterCount) != 4) {
2672 rc = -EIO; /* bad smb */
2673 goto qsec_out;
2674 }
2675
2676 /* BB check that data area is minimum length and as big as acl_len */
2677
2678 acl_len = le32_to_cpu(*(__le32 *)parm);
2679 /* BB check if(acl_len > bufsize) */
2680
2681 parse_sec_desc(psec_desc, acl_len);
2682 }
2683 qsec_out:
2684 if(buf_type == CIFS_SMALL_BUFFER)
2685 cifs_small_buf_release(iov[0].iov_base);
2686 else if(buf_type == CIFS_LARGE_BUFFER)
2687 cifs_buf_release(iov[0].iov_base);
2688 /* cifs_small_buf_release(pSMB); */ /* Freed earlier now in SendReceive2 */
2689 return rc;
2690 }
2691
2692
2693 /* Legacy Query Path Information call for lookup to old servers such
2694 as Win9x/WinME */
2695 int SMBQueryInformation(const int xid, struct cifsTconInfo *tcon,
2696 const unsigned char *searchName,
2697 FILE_ALL_INFO * pFinfo,
2698 const struct nls_table *nls_codepage, int remap)
2699 {
2700 QUERY_INFORMATION_REQ * pSMB;
2701 QUERY_INFORMATION_RSP * pSMBr;
2702 int rc = 0;
2703 int bytes_returned;
2704 int name_len;
2705
2706 cFYI(1, ("In SMBQPath path %s", searchName));
2707 QInfRetry:
2708 rc = smb_init(SMB_COM_QUERY_INFORMATION, 0, tcon, (void **) &pSMB,
2709 (void **) &pSMBr);
2710 if (rc)
2711 return rc;
2712
2713 if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
2714 name_len =
2715 cifsConvertToUCS((__le16 *) pSMB->FileName, searchName,
2716 PATH_MAX, nls_codepage, remap);
2717 name_len++; /* trailing null */
2718 name_len *= 2;
2719 } else {
2720 name_len = strnlen(searchName, PATH_MAX);
2721 name_len++; /* trailing null */
2722 strncpy(pSMB->FileName, searchName, name_len);
2723 }
2724 pSMB->BufferFormat = 0x04;
2725 name_len++; /* account for buffer type byte */
2726 pSMB->hdr.smb_buf_length += (__u16) name_len;
2727 pSMB->ByteCount = cpu_to_le16(name_len);
2728
2729 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
2730 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
2731 if (rc) {
2732 cFYI(1, ("Send error in QueryInfo = %d", rc));
2733 } else if (pFinfo) { /* decode response */
2734 memset(pFinfo, 0, sizeof(FILE_ALL_INFO));
2735 pFinfo->AllocationSize =
2736 cpu_to_le64(le32_to_cpu(pSMBr->size));
2737 pFinfo->EndOfFile = pFinfo->AllocationSize;
2738 pFinfo->Attributes =
2739 cpu_to_le32(le16_to_cpu(pSMBr->attr));
2740 } else
2741 rc = -EIO; /* bad buffer passed in */
2742
2743 cifs_buf_release(pSMB);
2744
2745 if (rc == -EAGAIN)
2746 goto QInfRetry;
2747
2748 return rc;
2749 }
2750
2751
2752
2753
2754 int
2755 CIFSSMBQPathInfo(const int xid, struct cifsTconInfo *tcon,
2756 const unsigned char *searchName,
2757 FILE_ALL_INFO * pFindData,
2758 const struct nls_table *nls_codepage, int remap)
2759 {
2760 /* level 263 SMB_QUERY_FILE_ALL_INFO */
2761 TRANSACTION2_QPI_REQ *pSMB = NULL;
2762 TRANSACTION2_QPI_RSP *pSMBr = NULL;
2763 int rc = 0;
2764 int bytes_returned;
2765 int name_len;
2766 __u16 params, byte_count;
2767
2768 /* cFYI(1, ("In QPathInfo path %s", searchName)); */
2769 QPathInfoRetry:
2770 rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
2771 (void **) &pSMBr);
2772 if (rc)
2773 return rc;
2774
2775 if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
2776 name_len =
2777 cifsConvertToUCS((__le16 *) pSMB->FileName, searchName,
2778 PATH_MAX, nls_codepage, remap);
2779 name_len++; /* trailing null */
2780 name_len *= 2;
2781 } else { /* BB improve the check for buffer overruns BB */
2782 name_len = strnlen(searchName, PATH_MAX);
2783 name_len++; /* trailing null */
2784 strncpy(pSMB->FileName, searchName, name_len);
2785 }
2786
2787 params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */ ;
2788 pSMB->TotalDataCount = 0;
2789 pSMB->MaxParameterCount = cpu_to_le16(2);
2790 pSMB->MaxDataCount = cpu_to_le16(4000); /* BB find exact max SMB PDU from sess structure BB */
2791 pSMB->MaxSetupCount = 0;
2792 pSMB->Reserved = 0;
2793 pSMB->Flags = 0;
2794 pSMB->Timeout = 0;
2795 pSMB->Reserved2 = 0;
2796 pSMB->ParameterOffset = cpu_to_le16(offsetof(
2797 struct smb_com_transaction2_qpi_req ,InformationLevel) - 4);
2798 pSMB->DataCount = 0;
2799 pSMB->DataOffset = 0;
2800 pSMB->SetupCount = 1;
2801 pSMB->Reserved3 = 0;
2802 pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION);
2803 byte_count = params + 1 /* pad */ ;
2804 pSMB->TotalParameterCount = cpu_to_le16(params);
2805 pSMB->ParameterCount = pSMB->TotalParameterCount;
2806 pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_ALL_INFO);
2807 pSMB->Reserved4 = 0;
2808 pSMB->hdr.smb_buf_length += byte_count;
2809 pSMB->ByteCount = cpu_to_le16(byte_count);
2810
2811 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
2812 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
2813 if (rc) {
2814 cFYI(1, ("Send error in QPathInfo = %d", rc));
2815 } else { /* decode response */
2816 rc = validate_t2((struct smb_t2_rsp *)pSMBr);
2817
2818 if (rc || (pSMBr->ByteCount < 40))
2819 rc = -EIO; /* bad smb */
2820 else if (pFindData){
2821 __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
2822 memcpy((char *) pFindData,
2823 (char *) &pSMBr->hdr.Protocol +
2824 data_offset, sizeof (FILE_ALL_INFO));
2825 } else
2826 rc = -ENOMEM;
2827 }
2828 cifs_buf_release(pSMB);
2829 if (rc == -EAGAIN)
2830 goto QPathInfoRetry;
2831
2832 return rc;
2833 }
2834
2835 int
2836 CIFSSMBUnixQPathInfo(const int xid, struct cifsTconInfo *tcon,
2837 const unsigned char *searchName,
2838 FILE_UNIX_BASIC_INFO * pFindData,
2839 const struct nls_table *nls_codepage, int remap)
2840 {
2841 /* SMB_QUERY_FILE_UNIX_BASIC */
2842 TRANSACTION2_QPI_REQ *pSMB = NULL;
2843 TRANSACTION2_QPI_RSP *pSMBr = NULL;
2844 int rc = 0;
2845 int bytes_returned = 0;
2846 int name_len;
2847 __u16 params, byte_count;
2848
2849 cFYI(1, ("In QPathInfo (Unix) the path %s", searchName));
2850 UnixQPathInfoRetry:
2851 rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
2852 (void **) &pSMBr);
2853 if (rc)
2854 return rc;
2855
2856 if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
2857 name_len =
2858 cifsConvertToUCS((__le16 *) pSMB->FileName, searchName,
2859 PATH_MAX, nls_codepage, remap);
2860 name_len++; /* trailing null */
2861 name_len *= 2;
2862 } else { /* BB improve the check for buffer overruns BB */
2863 name_len = strnlen(searchName, PATH_MAX);
2864 name_len++; /* trailing null */
2865 strncpy(pSMB->FileName, searchName, name_len);
2866 }
2867
2868 params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */ ;
2869 pSMB->TotalDataCount = 0;
2870 pSMB->MaxParameterCount = cpu_to_le16(2);
2871 /* BB find exact max SMB PDU from sess structure BB */
2872 pSMB->MaxDataCount = cpu_to_le16(4000);
2873 pSMB->MaxSetupCount = 0;
2874 pSMB->Reserved = 0;
2875 pSMB->Flags = 0;
2876 pSMB->Timeout = 0;
2877 pSMB->Reserved2 = 0;
2878 pSMB->ParameterOffset = cpu_to_le16(offsetof(
2879 struct smb_com_transaction2_qpi_req ,InformationLevel) - 4);
2880 pSMB->DataCount = 0;
2881 pSMB->DataOffset = 0;
2882 pSMB->SetupCount = 1;
2883 pSMB->Reserved3 = 0;
2884 pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION);
2885 byte_count = params + 1 /* pad */ ;
2886 pSMB->TotalParameterCount = cpu_to_le16(params);
2887 pSMB->ParameterCount = pSMB->TotalParameterCount;
2888 pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC);
2889 pSMB->Reserved4 = 0;
2890 pSMB->hdr.smb_buf_length += byte_count;
2891 pSMB->ByteCount = cpu_to_le16(byte_count);
2892
2893 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
2894 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
2895 if (rc) {
2896 cFYI(1, ("Send error in QPathInfo = %d", rc));
2897 } else { /* decode response */
2898 rc = validate_t2((struct smb_t2_rsp *)pSMBr);
2899
2900 if (rc || (pSMBr->ByteCount < sizeof(FILE_UNIX_BASIC_INFO))) {
2901 rc = -EIO; /* bad smb */
2902 } else {
2903 __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
2904 memcpy((char *) pFindData,
2905 (char *) &pSMBr->hdr.Protocol +
2906 data_offset,
2907 sizeof (FILE_UNIX_BASIC_INFO));
2908 }
2909 }
2910 cifs_buf_release(pSMB);
2911 if (rc == -EAGAIN)
2912 goto UnixQPathInfoRetry;
2913
2914 return rc;
2915 }
2916
2917 #if 0 /* function unused at present */
2918 int CIFSFindSingle(const int xid, struct cifsTconInfo *tcon,
2919 const char *searchName, FILE_ALL_INFO * findData,
2920 const struct nls_table *nls_codepage)
2921 {
2922 /* level 257 SMB_ */
2923 TRANSACTION2_FFIRST_REQ *pSMB = NULL;
2924 TRANSACTION2_FFIRST_RSP *pSMBr = NULL;
2925 int rc = 0;
2926 int bytes_returned;
2927 int name_len;
2928 __u16 params, byte_count;
2929
2930 cFYI(1, ("In FindUnique"));
2931 findUniqueRetry:
2932 rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
2933 (void **) &pSMBr);
2934 if (rc)
2935 return rc;
2936
2937 if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
2938 name_len =
2939 cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, PATH_MAX
2940 /* find define for this maxpathcomponent */
2941 , nls_codepage);
2942 name_len++; /* trailing null */
2943 name_len *= 2;
2944 } else { /* BB improve the check for buffer overruns BB */
2945 name_len = strnlen(searchName, PATH_MAX);
2946 name_len++; /* trailing null */
2947 strncpy(pSMB->FileName, searchName, name_len);
2948 }
2949
2950 params = 12 + name_len /* includes null */ ;
2951 pSMB->TotalDataCount = 0; /* no EAs */
2952 pSMB->MaxParameterCount = cpu_to_le16(2);
2953 pSMB->MaxDataCount = cpu_to_le16(4000); /* BB find exact max SMB PDU from sess structure BB */
2954 pSMB->MaxSetupCount = 0;
2955 pSMB->Reserved = 0;
2956 pSMB->Flags = 0;
2957 pSMB->Timeout = 0;
2958 pSMB->Reserved2 = 0;
2959 pSMB->ParameterOffset = cpu_to_le16(
2960 offsetof(struct smb_com_transaction2_ffirst_req,InformationLevel) - 4);
2961 pSMB->DataCount = 0;
2962 pSMB->DataOffset = 0;
2963 pSMB->SetupCount = 1; /* one byte, no need to le convert */
2964 pSMB->Reserved3 = 0;
2965 pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_FIRST);
2966 byte_count = params + 1 /* pad */ ;
2967 pSMB->TotalParameterCount = cpu_to_le16(params);
2968 pSMB->ParameterCount = pSMB->TotalParameterCount;
2969 pSMB->SearchAttributes =
2970 cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM |
2971 ATTR_DIRECTORY);
2972 pSMB->SearchCount = cpu_to_le16(16); /* BB increase */
2973 pSMB->SearchFlags = cpu_to_le16(1);
2974 pSMB->InformationLevel = cpu_to_le16(SMB_FIND_FILE_DIRECTORY_INFO);
2975 pSMB->SearchStorageType = 0; /* BB what should we set this to? BB */
2976 pSMB->hdr.smb_buf_length += byte_count;
2977 pSMB->ByteCount = cpu_to_le16(byte_count);
2978
2979 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
2980 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
2981
2982 if (rc) {
2983 cFYI(1, ("Send error in FindFileDirInfo = %d", rc));
2984 } else { /* decode response */
2985 cifs_stats_inc(&tcon->num_ffirst);
2986 /* BB fill in */
2987 }
2988
2989 cifs_buf_release(pSMB);
2990 if (rc == -EAGAIN)
2991 goto findUniqueRetry;
2992
2993 return rc;
2994 }
2995 #endif /* end unused (temporarily) function */
2996
2997 /* xid, tcon, searchName and codepage are input parms, rest are returned */
2998 int
2999 CIFSFindFirst(const int xid, struct cifsTconInfo *tcon,
3000 const char *searchName,
3001 const struct nls_table *nls_codepage,
3002 __u16 * pnetfid,
3003 struct cifs_search_info * psrch_inf, int remap, const char dirsep)
3004 {
3005 /* level 257 SMB_ */
3006 TRANSACTION2_FFIRST_REQ *pSMB = NULL;
3007 TRANSACTION2_FFIRST_RSP *pSMBr = NULL;
3008 T2_FFIRST_RSP_PARMS * parms;
3009 int rc = 0;
3010 int bytes_returned = 0;
3011 int name_len;
3012 __u16 params, byte_count;
3013
3014 cFYI(1, ("In FindFirst for %s",searchName));
3015
3016 findFirstRetry:
3017 rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
3018 (void **) &pSMBr);
3019 if (rc)
3020 return rc;
3021
3022 if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
3023 name_len =
3024 cifsConvertToUCS((__le16 *) pSMB->FileName,searchName,
3025 PATH_MAX, nls_codepage, remap);
3026 /* We can not add the asterik earlier in case
3027 it got remapped to 0xF03A as if it were part of the
3028 directory name instead of a wildcard */
3029 name_len *= 2;
3030 pSMB->FileName[name_len] = dirsep;
3031 pSMB->FileName[name_len+1] = 0;
3032 pSMB->FileName[name_len+2] = '*';
3033 pSMB->FileName[name_len+3] = 0;
3034 name_len += 4; /* now the trailing null */
3035 pSMB->FileName[name_len] = 0; /* null terminate just in case */
3036 pSMB->FileName[name_len+1] = 0;
3037 name_len += 2;
3038 } else { /* BB add check for overrun of SMB buf BB */
3039 name_len = strnlen(searchName, PATH_MAX);
3040 /* BB fix here and in unicode clause above ie
3041 if(name_len > buffersize-header)
3042 free buffer exit; BB */
3043 strncpy(pSMB->FileName, searchName, name_len);
3044 pSMB->FileName[name_len] = dirsep;
3045 pSMB->FileName[name_len+1] = '*';
3046 pSMB->FileName[name_len+2] = 0;
3047 name_len += 3;
3048 }
3049
3050 params = 12 + name_len /* includes null */ ;
3051 pSMB->TotalDataCount = 0; /* no EAs */
3052 pSMB->MaxParameterCount = cpu_to_le16(10);
3053 pSMB->MaxDataCount = cpu_to_le16((tcon->ses->server->maxBuf -
3054 MAX_CIFS_HDR_SIZE) & 0xFFFFFF00);
3055 pSMB->MaxSetupCount = 0;
3056 pSMB->Reserved = 0;
3057 pSMB->Flags = 0;
3058 pSMB->Timeout = 0;
3059 pSMB->Reserved2 = 0;
3060 byte_count = params + 1 /* pad */ ;
3061 pSMB->TotalParameterCount = cpu_to_le16(params);
3062 pSMB->ParameterCount = pSMB->TotalParameterCount;
3063 pSMB->ParameterOffset = cpu_to_le16(
3064 offsetof(struct smb_com_transaction2_ffirst_req, SearchAttributes)
3065 - 4);
3066 pSMB->DataCount = 0;
3067 pSMB->DataOffset = 0;
3068 pSMB->SetupCount = 1; /* one byte, no need to make endian neutral */
3069 pSMB->Reserved3 = 0;
3070 pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_FIRST);
3071 pSMB->SearchAttributes =
3072 cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM |
3073 ATTR_DIRECTORY);
3074 pSMB->SearchCount= cpu_to_le16(CIFSMaxBufSize/sizeof(FILE_UNIX_INFO));
3075 pSMB->SearchFlags = cpu_to_le16(CIFS_SEARCH_CLOSE_AT_END |
3076 CIFS_SEARCH_RETURN_RESUME);
3077 pSMB->InformationLevel = cpu_to_le16(psrch_inf->info_level);
3078
3079 /* BB what should we set StorageType to? Does it matter? BB */
3080 pSMB->SearchStorageType = 0;
3081 pSMB->hdr.smb_buf_length += byte_count;
3082 pSMB->ByteCount = cpu_to_le16(byte_count);
3083
3084 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
3085 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
3086 cifs_stats_inc(&tcon->num_ffirst);
3087
3088 if (rc) {/* BB add logic to retry regular search if Unix search
3089 rejected unexpectedly by server */
3090 /* BB Add code to handle unsupported level rc */
3091 cFYI(1, ("Error in FindFirst = %d", rc));
3092
3093 cifs_buf_release(pSMB);
3094
3095 /* BB eventually could optimize out free and realloc of buf */
3096 /* for this case */
3097 if (rc == -EAGAIN)
3098 goto findFirstRetry;
3099 } else { /* decode response */
3100 /* BB remember to free buffer if error BB */
3101 rc = validate_t2((struct smb_t2_rsp *)pSMBr);
3102 if(rc == 0) {
3103 if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE)
3104 psrch_inf->unicode = TRUE;
3105 else
3106 psrch_inf->unicode = FALSE;
3107
3108 psrch_inf->ntwrk_buf_start = (char *)pSMBr;
3109 psrch_inf->smallBuf = 0;
3110 psrch_inf->srch_entries_start =
3111 (char *) &pSMBr->hdr.Protocol +
3112 le16_to_cpu(pSMBr->t2.DataOffset);
3113 parms = (T2_FFIRST_RSP_PARMS *)((char *) &pSMBr->hdr.Protocol +
3114 le16_to_cpu(pSMBr->t2.ParameterOffset));
3115
3116 if(parms->EndofSearch)
3117 psrch_inf->endOfSearch = TRUE;
3118 else
3119 psrch_inf->endOfSearch = FALSE;
3120
3121 psrch_inf->entries_in_buffer = le16_to_cpu(parms->SearchCount);
3122 psrch_inf->index_of_last_entry =
3123 psrch_inf->entries_in_buffer;
3124 *pnetfid = parms->SearchHandle;
3125 } else {
3126 cifs_buf_release(pSMB);
3127 }
3128 }
3129
3130 return rc;
3131 }
3132
3133 int CIFSFindNext(const int xid, struct cifsTconInfo *tcon,
3134 __u16 searchHandle, struct cifs_search_info * psrch_inf)
3135 {
3136 TRANSACTION2_FNEXT_REQ *pSMB = NULL;
3137 TRANSACTION2_FNEXT_RSP *pSMBr = NULL;
3138 T2_FNEXT_RSP_PARMS * parms;
3139 char *response_data;
3140 int rc = 0;
3141 int bytes_returned, name_len;
3142 __u16 params, byte_count;
3143
3144 cFYI(1, ("In FindNext"));
3145
3146 if(psrch_inf->endOfSearch == TRUE)
3147 return -ENOENT;
3148
3149 rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
3150 (void **) &pSMBr);
3151 if (rc)
3152 return rc;
3153
3154 params = 14; /* includes 2 bytes of null string, converted to LE below */
3155 byte_count = 0;
3156 pSMB->TotalDataCount = 0; /* no EAs */
3157 pSMB->MaxParameterCount = cpu_to_le16(8);
3158 pSMB->MaxDataCount =
3159 cpu_to_le16((tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE) & 0xFFFFFF00);
3160 pSMB->MaxSetupCount = 0;
3161 pSMB->Reserved = 0;
3162 pSMB->Flags = 0;
3163 pSMB->Timeout = 0;
3164 pSMB->Reserved2 = 0;
3165 pSMB->ParameterOffset = cpu_to_le16(
3166 offsetof(struct smb_com_transaction2_fnext_req,SearchHandle) - 4);
3167 pSMB->DataCount = 0;
3168 pSMB->DataOffset = 0;
3169 pSMB->SetupCount = 1;
3170 pSMB->Reserved3 = 0;
3171 pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_NEXT);
3172 pSMB->SearchHandle = searchHandle; /* always kept as le */
3173 pSMB->SearchCount =
3174 cpu_to_le16(CIFSMaxBufSize / sizeof (FILE_UNIX_INFO));
3175 /* test for Unix extensions */
3176 /* if (tcon->ses->capabilities & CAP_UNIX) {
3177 pSMB->InformationLevel = cpu_to_le16(SMB_FIND_FILE_UNIX);
3178 psrch_inf->info_level = SMB_FIND_FILE_UNIX;
3179 } else {
3180 pSMB->InformationLevel =
3181 cpu_to_le16(SMB_FIND_FILE_DIRECTORY_INFO);
3182 psrch_inf->info_level = SMB_FIND_FILE_DIRECTORY_INFO;
3183 } */
3184 pSMB->InformationLevel = cpu_to_le16(psrch_inf->info_level);
3185 pSMB->ResumeKey = psrch_inf->resume_key;
3186 pSMB->SearchFlags =
3187 cpu_to_le16(CIFS_SEARCH_CLOSE_AT_END | CIFS_SEARCH_RETURN_RESUME);
3188
3189 name_len = psrch_inf->resume_name_len;
3190 params += name_len;
3191 if(name_len < PATH_MAX) {
3192 memcpy(pSMB->ResumeFileName, psrch_inf->presume_name, name_len);
3193 byte_count += name_len;
3194 /* 14 byte parm len above enough for 2 byte null terminator */
3195 pSMB->ResumeFileName[name_len] = 0;
3196 pSMB->ResumeFileName[name_len+1] = 0;
3197 } else {
3198 rc = -EINVAL;
3199 goto FNext2_err_exit;
3200 }
3201 byte_count = params + 1 /* pad */ ;
3202 pSMB->TotalParameterCount = cpu_to_le16(params);
3203 pSMB->ParameterCount = pSMB->TotalParameterCount;
3204 pSMB->hdr.smb_buf_length += byte_count;
3205 pSMB->ByteCount = cpu_to_le16(byte_count);
3206
3207 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
3208 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
3209 cifs_stats_inc(&tcon->num_fnext);
3210 if (rc) {
3211 if (rc == -EBADF) {
3212 psrch_inf->endOfSearch = TRUE;
3213 rc = 0; /* search probably was closed at end of search above */
3214 } else
3215 cFYI(1, ("FindNext returned = %d", rc));
3216 } else { /* decode response */
3217 rc = validate_t2((struct smb_t2_rsp *)pSMBr);
3218
3219 if(rc == 0) {
3220 /* BB fixme add lock for file (srch_info) struct here */
3221 if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE)
3222 psrch_inf->unicode = TRUE;
3223 else
3224 psrch_inf->unicode = FALSE;
3225 response_data = (char *) &pSMBr->hdr.Protocol +
3226 le16_to_cpu(pSMBr->t2.ParameterOffset);
3227 parms = (T2_FNEXT_RSP_PARMS *)response_data;
3228 response_data = (char *)&pSMBr->hdr.Protocol +
3229 le16_to_cpu(pSMBr->t2.DataOffset);
3230 if(psrch_inf->smallBuf)
3231 cifs_small_buf_release(
3232 psrch_inf->ntwrk_buf_start);
3233 else
3234 cifs_buf_release(psrch_inf->ntwrk_buf_start);
3235 psrch_inf->srch_entries_start = response_data;
3236 psrch_inf->ntwrk_buf_start = (char *)pSMB;
3237 psrch_inf->smallBuf = 0;
3238 if(parms->EndofSearch)
3239 psrch_inf->endOfSearch = TRUE;
3240 else
3241 psrch_inf->endOfSearch = FALSE;
3242
3243 psrch_inf->entries_in_buffer = le16_to_cpu(parms->SearchCount);
3244 psrch_inf->index_of_last_entry +=
3245 psrch_inf->entries_in_buffer;
3246 /* cFYI(1,("fnxt2 entries in buf %d index_of_last %d",psrch_inf->entries_in_buffer,psrch_inf->index_of_last_entry)); */
3247
3248 /* BB fixme add unlock here */
3249 }
3250
3251 }
3252
3253 /* BB On error, should we leave previous search buf (and count and
3254 last entry fields) intact or free the previous one? */
3255
3256 /* Note: On -EAGAIN error only caller can retry on handle based calls
3257 since file handle passed in no longer valid */
3258 FNext2_err_exit:
3259 if (rc != 0)
3260 cifs_buf_release(pSMB);
3261
3262 return rc;
3263 }
3264
3265 int
3266 CIFSFindClose(const int xid, struct cifsTconInfo *tcon, const __u16 searchHandle)
3267 {
3268 int rc = 0;
3269 FINDCLOSE_REQ *pSMB = NULL;
3270 CLOSE_RSP *pSMBr = NULL; /* BB removeme BB */
3271 int bytes_returned;
3272
3273 cFYI(1, ("In CIFSSMBFindClose"));
3274 rc = small_smb_init(SMB_COM_FIND_CLOSE2, 1, tcon, (void **)&pSMB);
3275
3276 /* no sense returning error if session restarted
3277 as file handle has been closed */
3278 if(rc == -EAGAIN)
3279 return 0;
3280 if (rc)
3281 return rc;
3282
3283 pSMBr = (CLOSE_RSP *)pSMB; /* BB removeme BB */
3284 pSMB->FileID = searchHandle;
3285 pSMB->ByteCount = 0;
3286 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
3287 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
3288 if (rc) {
3289 cERROR(1, ("Send error in FindClose = %d", rc));
3290 }
3291 cifs_stats_inc(&tcon->num_fclose);
3292 cifs_small_buf_release(pSMB);
3293
3294 /* Since session is dead, search handle closed on server already */
3295 if (rc == -EAGAIN)
3296 rc = 0;
3297
3298 return rc;
3299 }
3300
3301 int
3302 CIFSGetSrvInodeNumber(const int xid, struct cifsTconInfo *tcon,
3303 const unsigned char *searchName,
3304 __u64 * inode_number,
3305 const struct nls_table *nls_codepage, int remap)
3306 {
3307 int rc = 0;
3308 TRANSACTION2_QPI_REQ *pSMB = NULL;
3309 TRANSACTION2_QPI_RSP *pSMBr = NULL;
3310 int name_len, bytes_returned;
3311 __u16 params, byte_count;
3312
3313 cFYI(1,("In GetSrvInodeNum for %s",searchName));
3314 if(tcon == NULL)
3315 return -ENODEV;
3316
3317 GetInodeNumberRetry:
3318 rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
3319 (void **) &pSMBr);
3320 if (rc)
3321 return rc;
3322
3323
3324 if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
3325 name_len =
3326 cifsConvertToUCS((__le16 *) pSMB->FileName, searchName,
3327 PATH_MAX,nls_codepage, remap);
3328 name_len++; /* trailing null */
3329 name_len *= 2;
3330 } else { /* BB improve the check for buffer overruns BB */
3331 name_len = strnlen(searchName, PATH_MAX);
3332 name_len++; /* trailing null */
3333 strncpy(pSMB->FileName, searchName, name_len);
3334 }
3335
3336 params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ;
3337 pSMB->TotalDataCount = 0;
3338 pSMB->MaxParameterCount = cpu_to_le16(2);
3339 /* BB find exact max data count below from sess structure BB */
3340 pSMB->MaxDataCount = cpu_to_le16(4000);
3341 pSMB->MaxSetupCount = 0;
3342 pSMB->Reserved = 0;
3343 pSMB->Flags = 0;
3344 pSMB->Timeout = 0;
3345 pSMB->Reserved2 = 0;
3346 pSMB->ParameterOffset = cpu_to_le16(offsetof(
3347 struct smb_com_transaction2_qpi_req ,InformationLevel) - 4);
3348 pSMB->DataCount = 0;
3349 pSMB->DataOffset = 0;
3350 pSMB->SetupCount = 1;
3351 pSMB->Reserved3 = 0;
3352 pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION);
3353 byte_count = params + 1 /* pad */ ;
3354 pSMB->TotalParameterCount = cpu_to_le16(params);
3355 pSMB->ParameterCount = pSMB->TotalParameterCount;
3356 pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_INTERNAL_INFO);
3357 pSMB->Reserved4 = 0;
3358 pSMB->hdr.smb_buf_length += byte_count;
3359 pSMB->ByteCount = cpu_to_le16(byte_count);
3360
3361 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
3362 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
3363 if (rc) {
3364 cFYI(1, ("error %d in QueryInternalInfo", rc));
3365 } else {
3366 /* decode response */
3367 rc = validate_t2((struct smb_t2_rsp *)pSMBr);
3368 if (rc || (pSMBr->ByteCount < 2))
3369 /* BB also check enough total bytes returned */
3370 /* If rc should we check for EOPNOSUPP and
3371 disable the srvino flag? or in caller? */
3372 rc = -EIO; /* bad smb */
3373 else {
3374 __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
3375 __u16 count = le16_to_cpu(pSMBr->t2.DataCount);
3376 struct file_internal_info * pfinfo;
3377 /* BB Do we need a cast or hash here ? */
3378 if(count < 8) {
3379 cFYI(1, ("Illegal size ret in QryIntrnlInf"));
3380 rc = -EIO;
3381 goto GetInodeNumOut;
3382 }
3383 pfinfo = (struct file_internal_info *)
3384 (data_offset + (char *) &pSMBr->hdr.Protocol);
3385 *inode_number = pfinfo->UniqueId;
3386 }
3387 }
3388 GetInodeNumOut:
3389 cifs_buf_release(pSMB);
3390 if (rc == -EAGAIN)
3391 goto GetInodeNumberRetry;
3392 return rc;
3393 }
3394
3395 int
3396 CIFSGetDFSRefer(const int xid, struct cifsSesInfo *ses,
3397 const unsigned char *searchName,
3398 unsigned char **targetUNCs,
3399 unsigned int *number_of_UNC_in_array,
3400 const struct nls_table *nls_codepage, int remap)
3401 {
3402 /* TRANS2_GET_DFS_REFERRAL */
3403 TRANSACTION2_GET_DFS_REFER_REQ *pSMB = NULL;
3404 TRANSACTION2_GET_DFS_REFER_RSP *pSMBr = NULL;
3405 struct dfs_referral_level_3 * referrals = NULL;
3406 int rc = 0;
3407 int bytes_returned;
3408 int name_len;
3409 unsigned int i;
3410 char * temp;
3411 __u16 params, byte_count;
3412 *number_of_UNC_in_array = 0;
3413 *targetUNCs = NULL;
3414
3415 cFYI(1, ("In GetDFSRefer the path %s", searchName));
3416 if (ses == NULL)
3417 return -ENODEV;
3418 getDFSRetry:
3419 rc = smb_init(SMB_COM_TRANSACTION2, 15, NULL, (void **) &pSMB,
3420 (void **) &pSMBr);
3421 if (rc)
3422 return rc;
3423
3424 /* server pointer checked in called function,
3425 but should never be null here anyway */
3426 pSMB->hdr.Mid = GetNextMid(ses->server);
3427 pSMB->hdr.Tid = ses->ipc_tid;
3428 pSMB->hdr.Uid = ses->Suid;
3429 if (ses->capabilities & CAP_STATUS32) {
3430 pSMB->hdr.Flags2 |= SMBFLG2_ERR_STATUS;
3431 }
3432 if (ses->capabilities & CAP_DFS) {
3433 pSMB->hdr.Flags2 |= SMBFLG2_DFS;
3434 }
3435
3436 if (ses->capabilities & CAP_UNICODE) {
3437 pSMB->hdr.Flags2 |= SMBFLG2_UNICODE;
3438 name_len =
3439 cifsConvertToUCS((__le16 *) pSMB->RequestFileName,
3440 searchName, PATH_MAX, nls_codepage, remap);
3441 name_len++; /* trailing null */
3442 name_len *= 2;
3443 } else { /* BB improve the check for buffer overruns BB */
3444 name_len = strnlen(searchName, PATH_MAX);
3445 name_len++; /* trailing null */
3446 strncpy(pSMB->RequestFileName, searchName, name_len);
3447 }
3448
3449 params = 2 /* level */ + name_len /*includes null */ ;
3450 pSMB->TotalDataCount = 0;
3451 pSMB->DataCount = 0;
3452 pSMB->DataOffset = 0;
3453 pSMB->MaxParameterCount = 0;
3454 pSMB->MaxDataCount = cpu_to_le16(4000); /* BB find exact max SMB PDU from sess structure BB */
3455 pSMB->MaxSetupCount = 0;
3456 pSMB->Reserved = 0;
3457 pSMB->Flags = 0;
3458 pSMB->Timeout = 0;
3459 pSMB->Reserved2 = 0;
3460 pSMB->ParameterOffset = cpu_to_le16(offsetof(
3461 struct smb_com_transaction2_get_dfs_refer_req, MaxReferralLevel) - 4);
3462 pSMB->SetupCount = 1;
3463 pSMB->Reserved3 = 0;
3464 pSMB->SubCommand = cpu_to_le16(TRANS2_GET_DFS_REFERRAL);
3465 byte_count = params + 3 /* pad */ ;
3466 pSMB->ParameterCount = cpu_to_le16(params);
3467 pSMB->TotalParameterCount = pSMB->ParameterCount;
3468 pSMB->MaxReferralLevel = cpu_to_le16(3);
3469 pSMB->hdr.smb_buf_length += byte_count;
3470 pSMB->ByteCount = cpu_to_le16(byte_count);
3471
3472 rc = SendReceive(xid, ses, (struct smb_hdr *) pSMB,
3473 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
3474 if (rc) {
3475 cFYI(1, ("Send error in GetDFSRefer = %d", rc));
3476 } else { /* decode response */
3477 /* BB Add logic to parse referrals here */
3478 rc = validate_t2((struct smb_t2_rsp *)pSMBr);
3479
3480 if (rc || (pSMBr->ByteCount < 17)) /* BB also check enough total bytes returned */
3481 rc = -EIO; /* bad smb */
3482 else {
3483 __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
3484 __u16 data_count = le16_to_cpu(pSMBr->t2.DataCount);
3485
3486 cFYI(1,
3487 ("Decoding GetDFSRefer response. BCC: %d Offset %d",
3488 pSMBr->ByteCount, data_offset));
3489 referrals =
3490 (struct dfs_referral_level_3 *)
3491 (8 /* sizeof start of data block */ +
3492 data_offset +
3493 (char *) &pSMBr->hdr.Protocol);
3494 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",
3495 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)));
3496 /* BB This field is actually two bytes in from start of
3497 data block so we could do safety check that DataBlock
3498 begins at address of pSMBr->NumberOfReferrals */
3499 *number_of_UNC_in_array = le16_to_cpu(pSMBr->NumberOfReferrals);
3500
3501 /* BB Fix below so can return more than one referral */
3502 if(*number_of_UNC_in_array > 1)
3503 *number_of_UNC_in_array = 1;
3504
3505 /* get the length of the strings describing refs */
3506 name_len = 0;
3507 for(i=0;i<*number_of_UNC_in_array;i++) {
3508 /* make sure that DfsPathOffset not past end */
3509 __u16 offset = le16_to_cpu(referrals->DfsPathOffset);
3510 if (offset > data_count) {
3511 /* if invalid referral, stop here and do
3512 not try to copy any more */
3513 *number_of_UNC_in_array = i;
3514 break;
3515 }
3516 temp = ((char *)referrals) + offset;
3517
3518 if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) {
3519 name_len += UniStrnlen((wchar_t *)temp,data_count);
3520 } else {
3521 name_len += strnlen(temp,data_count);
3522 }
3523 referrals++;
3524 /* BB add check that referral pointer does not fall off end PDU */
3525
3526 }
3527 /* BB add check for name_len bigger than bcc */
3528 *targetUNCs =
3529 kmalloc(name_len+1+ (*number_of_UNC_in_array),GFP_KERNEL);
3530 if(*targetUNCs == NULL) {
3531 rc = -ENOMEM;
3532 goto GetDFSRefExit;
3533 }
3534 /* copy the ref strings */
3535 referrals =
3536 (struct dfs_referral_level_3 *)
3537 (8 /* sizeof data hdr */ +
3538 data_offset +
3539 (char *) &pSMBr->hdr.Protocol);
3540
3541 for(i=0;i<*number_of_UNC_in_array;i++) {
3542 temp = ((char *)referrals) + le16_to_cpu(referrals->DfsPathOffset);
3543 if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) {
3544 cifs_strfromUCS_le(*targetUNCs,
3545 (__le16 *) temp, name_len, nls_codepage);
3546 } else {
3547 strncpy(*targetUNCs,temp,name_len);
3548 }
3549 /* BB update target_uncs pointers */
3550 referrals++;
3551 }
3552 temp = *targetUNCs;
3553 temp[name_len] = 0;
3554 }
3555
3556 }
3557 GetDFSRefExit:
3558 if (pSMB)
3559 cifs_buf_release(pSMB);
3560
3561 if (rc == -EAGAIN)
3562 goto getDFSRetry;
3563
3564 return rc;
3565 }
3566
3567 /* Query File System Info such as free space to old servers such as Win 9x */
3568 int
3569 SMBOldQFSInfo(const int xid, struct cifsTconInfo *tcon, struct kstatfs *FSData)
3570 {
3571 /* level 0x01 SMB_QUERY_FILE_SYSTEM_INFO */
3572 TRANSACTION2_QFSI_REQ *pSMB = NULL;
3573 TRANSACTION2_QFSI_RSP *pSMBr = NULL;
3574 FILE_SYSTEM_ALLOC_INFO *response_data;
3575 int rc = 0;
3576 int bytes_returned = 0;
3577 __u16 params, byte_count;
3578
3579 cFYI(1, ("OldQFSInfo"));
3580 oldQFSInfoRetry:
3581 rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
3582 (void **) &pSMBr);
3583 if (rc)
3584 return rc;
3585 rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
3586 (void **) &pSMBr);
3587 if (rc)
3588 return rc;
3589
3590 params = 2; /* level */
3591 pSMB->TotalDataCount = 0;
3592 pSMB->MaxParameterCount = cpu_to_le16(2);
3593 pSMB->MaxDataCount = cpu_to_le16(1000);
3594 pSMB->MaxSetupCount = 0;
3595 pSMB->Reserved = 0;
3596 pSMB->Flags = 0;
3597 pSMB->Timeout = 0;
3598 pSMB->Reserved2 = 0;
3599 byte_count = params + 1 /* pad */ ;
3600 pSMB->TotalParameterCount = cpu_to_le16(params);
3601 pSMB->ParameterCount = pSMB->TotalParameterCount;
3602 pSMB->ParameterOffset = cpu_to_le16(offsetof(
3603 struct smb_com_transaction2_qfsi_req, InformationLevel) - 4);
3604 pSMB->DataCount = 0;
3605 pSMB->DataOffset = 0;
3606 pSMB->SetupCount = 1;
3607 pSMB->Reserved3 = 0;
3608 pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION);
3609 pSMB->InformationLevel = cpu_to_le16(SMB_INFO_ALLOCATION);
3610 pSMB->hdr.smb_buf_length += byte_count;
3611 pSMB->ByteCount = cpu_to_le16(byte_count);
3612
3613 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
3614 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
3615 if (rc) {
3616 cFYI(1, ("Send error in QFSInfo = %d", rc));
3617 } else { /* decode response */
3618 rc = validate_t2((struct smb_t2_rsp *)pSMBr);
3619
3620 if (rc || (pSMBr->ByteCount < 18))
3621 rc = -EIO; /* bad smb */
3622 else {
3623 __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
3624 cFYI(1,("qfsinf resp BCC: %d Offset %d",
3625 pSMBr->ByteCount, data_offset));
3626
3627 response_data =
3628 (FILE_SYSTEM_ALLOC_INFO *)
3629 (((char *) &pSMBr->hdr.Protocol) + data_offset);
3630 FSData->f_bsize =
3631 le16_to_cpu(response_data->BytesPerSector) *
3632 le32_to_cpu(response_data->
3633 SectorsPerAllocationUnit);
3634 FSData->f_blocks =
3635 le32_to_cpu(response_data->TotalAllocationUnits);
3636 FSData->f_bfree = FSData->f_bavail =
3637 le32_to_cpu(response_data->FreeAllocationUnits);
3638 cFYI(1,
3639 ("Blocks: %lld Free: %lld Block size %ld",
3640 (unsigned long long)FSData->f_blocks,
3641 (unsigned long long)FSData->f_bfree,
3642 FSData->f_bsize));
3643 }
3644 }
3645 cifs_buf_release(pSMB);
3646
3647 if (rc == -EAGAIN)
3648 goto oldQFSInfoRetry;
3649
3650 return rc;
3651 }
3652
3653 int
3654 CIFSSMBQFSInfo(const int xid, struct cifsTconInfo *tcon, struct kstatfs *FSData)
3655 {
3656 /* level 0x103 SMB_QUERY_FILE_SYSTEM_INFO */
3657 TRANSACTION2_QFSI_REQ *pSMB = NULL;
3658 TRANSACTION2_QFSI_RSP *pSMBr = NULL;
3659 FILE_SYSTEM_INFO *response_data;
3660 int rc = 0;
3661 int bytes_returned = 0;
3662 __u16 params, byte_count;
3663
3664 cFYI(1, ("In QFSInfo"));
3665 QFSInfoRetry:
3666 rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
3667 (void **) &pSMBr);
3668 if (rc)
3669 return rc;
3670
3671 params = 2; /* level */
3672 pSMB->TotalDataCount = 0;
3673 pSMB->MaxParameterCount = cpu_to_le16(2);
3674 pSMB->MaxDataCount = cpu_to_le16(1000);
3675 pSMB->MaxSetupCount = 0;
3676 pSMB->Reserved = 0;
3677 pSMB->Flags = 0;
3678 pSMB->Timeout = 0;
3679 pSMB->Reserved2 = 0;
3680 byte_count = params + 1 /* pad */ ;
3681 pSMB->TotalParameterCount = cpu_to_le16(params);
3682 pSMB->ParameterCount = pSMB->TotalParameterCount;
3683 pSMB->ParameterOffset = cpu_to_le16(offsetof(
3684 struct smb_com_transaction2_qfsi_req, InformationLevel) - 4);
3685 pSMB->DataCount = 0;
3686 pSMB->DataOffset = 0;
3687 pSMB->SetupCount = 1;
3688 pSMB->Reserved3 = 0;
3689 pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION);
3690 pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_SIZE_INFO);
3691 pSMB->hdr.smb_buf_length += byte_count;
3692 pSMB->ByteCount = cpu_to_le16(byte_count);
3693
3694 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
3695 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
3696 if (rc) {
3697 cFYI(1, ("Send error in QFSInfo = %d", rc));
3698 } else { /* decode response */
3699 rc = validate_t2((struct smb_t2_rsp *)pSMBr);
3700
3701 if (rc || (pSMBr->ByteCount < 24))
3702 rc = -EIO; /* bad smb */
3703 else {
3704 __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
3705
3706 response_data =
3707 (FILE_SYSTEM_INFO
3708 *) (((char *) &pSMBr->hdr.Protocol) +
3709 data_offset);
3710 FSData->f_bsize =
3711 le32_to_cpu(response_data->BytesPerSector) *
3712 le32_to_cpu(response_data->
3713 SectorsPerAllocationUnit);
3714 FSData->f_blocks =
3715 le64_to_cpu(response_data->TotalAllocationUnits);
3716 FSData->f_bfree = FSData->f_bavail =
3717 le64_to_cpu(response_data->FreeAllocationUnits);
3718 cFYI(1,
3719 ("Blocks: %lld Free: %lld Block size %ld",
3720 (unsigned long long)FSData->f_blocks,
3721 (unsigned long long)FSData->f_bfree,
3722 FSData->f_bsize));
3723 }
3724 }
3725 cifs_buf_release(pSMB);
3726
3727 if (rc == -EAGAIN)
3728 goto QFSInfoRetry;
3729
3730 return rc;
3731 }
3732
3733 int
3734 CIFSSMBQFSAttributeInfo(const int xid, struct cifsTconInfo *tcon)
3735 {
3736 /* level 0x105 SMB_QUERY_FILE_SYSTEM_INFO */
3737 TRANSACTION2_QFSI_REQ *pSMB = NULL;
3738 TRANSACTION2_QFSI_RSP *pSMBr = NULL;
3739 FILE_SYSTEM_ATTRIBUTE_INFO *response_data;
3740 int rc = 0;
3741 int bytes_returned = 0;
3742 __u16 params, byte_count;
3743
3744 cFYI(1, ("In QFSAttributeInfo"));
3745 QFSAttributeRetry:
3746 rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
3747 (void **) &pSMBr);
3748 if (rc)
3749 return rc;
3750
3751 params = 2; /* level */
3752 pSMB->TotalDataCount = 0;
3753 pSMB->MaxParameterCount = cpu_to_le16(2);
3754 pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find exact max SMB PDU from sess structure BB */
3755 pSMB->MaxSetupCount = 0;
3756 pSMB->Reserved = 0;
3757 pSMB->Flags = 0;
3758 pSMB->Timeout = 0;
3759 pSMB->Reserved2 = 0;
3760 byte_count = params + 1 /* pad */ ;
3761 pSMB->TotalParameterCount = cpu_to_le16(params);
3762 pSMB->ParameterCount = pSMB->TotalParameterCount;
3763 pSMB->ParameterOffset = cpu_to_le16(offsetof(
3764 struct smb_com_transaction2_qfsi_req, InformationLevel) - 4);
3765 pSMB->DataCount = 0;
3766 pSMB->DataOffset = 0;
3767 pSMB->SetupCount = 1;
3768 pSMB->Reserved3 = 0;
3769 pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION);
3770 pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_ATTRIBUTE_INFO);
3771 pSMB->hdr.smb_buf_length += byte_count;
3772 pSMB->ByteCount = cpu_to_le16(byte_count);
3773
3774 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
3775 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
3776 if (rc) {
3777 cERROR(1, ("Send error in QFSAttributeInfo = %d", rc));
3778 } else { /* decode response */
3779 rc = validate_t2((struct smb_t2_rsp *)pSMBr);
3780
3781 if (rc || (pSMBr->ByteCount < 13)) { /* BB also check enough bytes returned */
3782 rc = -EIO; /* bad smb */
3783 } else {
3784 __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
3785 response_data =
3786 (FILE_SYSTEM_ATTRIBUTE_INFO
3787 *) (((char *) &pSMBr->hdr.Protocol) +
3788 data_offset);
3789 memcpy(&tcon->fsAttrInfo, response_data,
3790 sizeof (FILE_SYSTEM_ATTRIBUTE_INFO));
3791 }
3792 }
3793 cifs_buf_release(pSMB);
3794
3795 if (rc == -EAGAIN)
3796 goto QFSAttributeRetry;
3797
3798 return rc;
3799 }
3800
3801 int
3802 CIFSSMBQFSDeviceInfo(const int xid, struct cifsTconInfo *tcon)
3803 {
3804 /* level 0x104 SMB_QUERY_FILE_SYSTEM_INFO */
3805 TRANSACTION2_QFSI_REQ *pSMB = NULL;
3806 TRANSACTION2_QFSI_RSP *pSMBr = NULL;
3807 FILE_SYSTEM_DEVICE_INFO *response_data;
3808 int rc = 0;
3809 int bytes_returned = 0;
3810 __u16 params, byte_count;
3811
3812 cFYI(1, ("In QFSDeviceInfo"));
3813 QFSDeviceRetry:
3814 rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
3815 (void **) &pSMBr);
3816 if (rc)
3817 return rc;
3818
3819 params = 2; /* level */
3820 pSMB->TotalDataCount = 0;
3821 pSMB->MaxParameterCount = cpu_to_le16(2);
3822 pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find exact max SMB PDU from sess structure BB */
3823 pSMB->MaxSetupCount = 0;
3824 pSMB->Reserved = 0;
3825 pSMB->Flags = 0;
3826 pSMB->Timeout = 0;
3827 pSMB->Reserved2 = 0;
3828 byte_count = params + 1 /* pad */ ;
3829 pSMB->TotalParameterCount = cpu_to_le16(params);
3830 pSMB->ParameterCount = pSMB->TotalParameterCount;
3831 pSMB->ParameterOffset = cpu_to_le16(offsetof(
3832 struct smb_com_transaction2_qfsi_req, InformationLevel) - 4);
3833
3834 pSMB->DataCount = 0;
3835 pSMB->DataOffset = 0;
3836 pSMB->SetupCount = 1;
3837 pSMB->Reserved3 = 0;
3838 pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION);
3839 pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_DEVICE_INFO);
3840 pSMB->hdr.smb_buf_length += byte_count;
3841 pSMB->ByteCount = cpu_to_le16(byte_count);
3842
3843 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
3844 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
3845 if (rc) {
3846 cFYI(1, ("Send error in QFSDeviceInfo = %d", rc));
3847 } else { /* decode response */
3848 rc = validate_t2((struct smb_t2_rsp *)pSMBr);
3849
3850 if (rc || (pSMBr->ByteCount < sizeof (FILE_SYSTEM_DEVICE_INFO)))
3851 rc = -EIO; /* bad smb */
3852 else {
3853 __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
3854 response_data =
3855 (FILE_SYSTEM_DEVICE_INFO *)
3856 (((char *) &pSMBr->hdr.Protocol) +
3857 data_offset);
3858 memcpy(&tcon->fsDevInfo, response_data,
3859 sizeof (FILE_SYSTEM_DEVICE_INFO));
3860 }
3861 }
3862 cifs_buf_release(pSMB);
3863
3864 if (rc == -EAGAIN)
3865 goto QFSDeviceRetry;
3866
3867 return rc;
3868 }
3869
3870 int
3871 CIFSSMBQFSUnixInfo(const int xid, struct cifsTconInfo *tcon)
3872 {
3873 /* level 0x200 SMB_QUERY_CIFS_UNIX_INFO */
3874 TRANSACTION2_QFSI_REQ *pSMB = NULL;
3875 TRANSACTION2_QFSI_RSP *pSMBr = NULL;
3876 FILE_SYSTEM_UNIX_INFO *response_data;
3877 int rc = 0;
3878 int bytes_returned = 0;
3879 __u16 params, byte_count;
3880
3881 cFYI(1, ("In QFSUnixInfo"));
3882 QFSUnixRetry:
3883 rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
3884 (void **) &pSMBr);
3885 if (rc)
3886 return rc;
3887
3888 params = 2; /* level */
3889 pSMB->TotalDataCount = 0;
3890 pSMB->DataCount = 0;
3891 pSMB->DataOffset = 0;
3892 pSMB->MaxParameterCount = cpu_to_le16(2);
3893 pSMB->MaxDataCount = cpu_to_le16(100); /* BB find exact max SMB PDU from sess structure BB */
3894 pSMB->MaxSetupCount = 0;
3895 pSMB->Reserved = 0;
3896 pSMB->Flags = 0;
3897 pSMB->Timeout = 0;
3898 pSMB->Reserved2 = 0;
3899 byte_count = params + 1 /* pad */ ;
3900 pSMB->ParameterCount = cpu_to_le16(params);
3901 pSMB->TotalParameterCount = pSMB->ParameterCount;
3902 pSMB->ParameterOffset = cpu_to_le16(offsetof(struct
3903 smb_com_transaction2_qfsi_req, InformationLevel) - 4);
3904 pSMB->SetupCount = 1;
3905 pSMB->Reserved3 = 0;
3906 pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION);
3907 pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_CIFS_UNIX_INFO);
3908 pSMB->hdr.smb_buf_length += byte_count;
3909 pSMB->ByteCount = cpu_to_le16(byte_count);
3910
3911 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
3912 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
3913 if (rc) {
3914 cERROR(1, ("Send error in QFSUnixInfo = %d", rc));
3915 } else { /* decode response */
3916 rc = validate_t2((struct smb_t2_rsp *)pSMBr);
3917
3918 if (rc || (pSMBr->ByteCount < 13)) {
3919 rc = -EIO; /* bad smb */
3920 } else {
3921 __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
3922 response_data =
3923 (FILE_SYSTEM_UNIX_INFO
3924 *) (((char *) &pSMBr->hdr.Protocol) +
3925 data_offset);
3926 memcpy(&tcon->fsUnixInfo, response_data,
3927 sizeof (FILE_SYSTEM_UNIX_INFO));
3928 }
3929 }
3930 cifs_buf_release(pSMB);
3931
3932 if (rc == -EAGAIN)
3933 goto QFSUnixRetry;
3934
3935
3936 return rc;
3937 }
3938
3939 int
3940 CIFSSMBSetFSUnixInfo(const int xid, struct cifsTconInfo *tcon, __u64 cap)
3941 {
3942 /* level 0x200 SMB_SET_CIFS_UNIX_INFO */
3943 TRANSACTION2_SETFSI_REQ *pSMB = NULL;
3944 TRANSACTION2_SETFSI_RSP *pSMBr = NULL;
3945 int rc = 0;
3946 int bytes_returned = 0;
3947 __u16 params, param_offset, offset, byte_count;
3948
3949 cFYI(1, ("In SETFSUnixInfo"));
3950 SETFSUnixRetry:
3951 /* BB switch to small buf init to save memory */
3952 rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
3953 (void **) &pSMBr);
3954 if (rc)
3955 return rc;
3956
3957 params = 4; /* 2 bytes zero followed by info level. */
3958 pSMB->MaxSetupCount = 0;
3959 pSMB->Reserved = 0;
3960 pSMB->Flags = 0;
3961 pSMB->Timeout = 0;
3962 pSMB->Reserved2 = 0;
3963 param_offset = offsetof(struct smb_com_transaction2_setfsi_req, FileNum) - 4;
3964 offset = param_offset + params;
3965
3966 pSMB->MaxParameterCount = cpu_to_le16(4);
3967 pSMB->MaxDataCount = cpu_to_le16(100); /* BB find exact max SMB PDU from sess structure BB */
3968 pSMB->SetupCount = 1;
3969 pSMB->Reserved3 = 0;
3970 pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FS_INFORMATION);
3971 byte_count = 1 /* pad */ + params + 12;
3972
3973 pSMB->DataCount = cpu_to_le16(12);
3974 pSMB->ParameterCount = cpu_to_le16(params);
3975 pSMB->TotalDataCount = pSMB->DataCount;
3976 pSMB->TotalParameterCount = pSMB->ParameterCount;
3977 pSMB->ParameterOffset = cpu_to_le16(param_offset);
3978 pSMB->DataOffset = cpu_to_le16(offset);
3979
3980 /* Params. */
3981 pSMB->FileNum = 0;
3982 pSMB->InformationLevel = cpu_to_le16(SMB_SET_CIFS_UNIX_INFO);
3983
3984 /* Data. */
3985 pSMB->ClientUnixMajor = cpu_to_le16(CIFS_UNIX_MAJOR_VERSION);
3986 pSMB->ClientUnixMinor = cpu_to_le16(CIFS_UNIX_MINOR_VERSION);
3987 pSMB->ClientUnixCap = cpu_to_le64(cap);
3988
3989 pSMB->hdr.smb_buf_length += byte_count;
3990 pSMB->ByteCount = cpu_to_le16(byte_count);
3991
3992 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
3993 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
3994 if (rc) {
3995 cERROR(1, ("Send error in SETFSUnixInfo = %d", rc));
3996 } else { /* decode response */
3997 rc = validate_t2((struct smb_t2_rsp *)pSMBr);
3998 if (rc) {
3999 rc = -EIO; /* bad smb */
4000 }
4001 }
4002 cifs_buf_release(pSMB);
4003
4004 if (rc == -EAGAIN)
4005 goto SETFSUnixRetry;
4006
4007 return rc;
4008 }
4009
4010
4011
4012 int
4013 CIFSSMBQFSPosixInfo(const int xid, struct cifsTconInfo *tcon,
4014 struct kstatfs *FSData)
4015 {
4016 /* level 0x201 SMB_QUERY_CIFS_POSIX_INFO */
4017 TRANSACTION2_QFSI_REQ *pSMB = NULL;
4018 TRANSACTION2_QFSI_RSP *pSMBr = NULL;
4019 FILE_SYSTEM_POSIX_INFO *response_data;
4020 int rc = 0;
4021 int bytes_returned = 0;
4022 __u16 params, byte_count;
4023
4024 cFYI(1, ("In QFSPosixInfo"));
4025 QFSPosixRetry:
4026 rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
4027 (void **) &pSMBr);
4028 if (rc)
4029 return rc;
4030
4031 params = 2; /* level */
4032 pSMB->TotalDataCount = 0;
4033 pSMB->DataCount = 0;
4034 pSMB->DataOffset = 0;
4035 pSMB->MaxParameterCount = cpu_to_le16(2);
4036 pSMB->MaxDataCount = cpu_to_le16(100); /* BB find exact max SMB PDU from sess structure BB */
4037 pSMB->MaxSetupCount = 0;
4038 pSMB->Reserved = 0;
4039 pSMB->Flags = 0;
4040 pSMB->Timeout = 0;
4041 pSMB->Reserved2 = 0;
4042 byte_count = params + 1 /* pad */ ;
4043 pSMB->ParameterCount = cpu_to_le16(params);
4044 pSMB->TotalParameterCount = pSMB->ParameterCount;
4045 pSMB->ParameterOffset = cpu_to_le16(offsetof(struct
4046 smb_com_transaction2_qfsi_req, InformationLevel) - 4);
4047 pSMB->SetupCount = 1;
4048 pSMB->Reserved3 = 0;
4049 pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION);
4050 pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_POSIX_FS_INFO);
4051 pSMB->hdr.smb_buf_length += byte_count;
4052 pSMB->ByteCount = cpu_to_le16(byte_count);
4053
4054 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
4055 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
4056 if (rc) {
4057 cFYI(1, ("Send error in QFSUnixInfo = %d", rc));
4058 } else { /* decode response */
4059 rc = validate_t2((struct smb_t2_rsp *)pSMBr);
4060
4061 if (rc || (pSMBr->ByteCount < 13)) {
4062 rc = -EIO; /* bad smb */
4063 } else {
4064 __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
4065 response_data =
4066 (FILE_SYSTEM_POSIX_INFO
4067 *) (((char *) &pSMBr->hdr.Protocol) +
4068 data_offset);
4069 FSData->f_bsize =
4070 le32_to_cpu(response_data->BlockSize);
4071 FSData->f_blocks =
4072 le64_to_cpu(response_data->TotalBlocks);
4073 FSData->f_bfree =
4074 le64_to_cpu(response_data->BlocksAvail);
4075 if(response_data->UserBlocksAvail == cpu_to_le64(-1)) {
4076 FSData->f_bavail = FSData->f_bfree;
4077 } else {
4078 FSData->f_bavail =
4079 le64_to_cpu(response_data->UserBlocksAvail);
4080 }
4081 if(response_data->TotalFileNodes != cpu_to_le64(-1))
4082 FSData->f_files =
4083 le64_to_cpu(response_data->TotalFileNodes);
4084 if(response_data->FreeFileNodes != cpu_to_le64(-1))
4085 FSData->f_ffree =
4086 le64_to_cpu(response_data->FreeFileNodes);
4087 }
4088 }
4089 cifs_buf_release(pSMB);
4090
4091 if (rc == -EAGAIN)
4092 goto QFSPosixRetry;
4093
4094 return rc;
4095 }
4096
4097
4098 /* We can not use write of zero bytes trick to
4099 set file size due to need for large file support. Also note that
4100 this SetPathInfo is preferred to SetFileInfo based method in next
4101 routine which is only needed to work around a sharing violation bug
4102 in Samba which this routine can run into */
4103
4104 int
4105 CIFSSMBSetEOF(const int xid, struct cifsTconInfo *tcon, const char *fileName,
4106 __u64 size, int SetAllocation,
4107 const struct nls_table *nls_codepage, int remap)
4108 {
4109 struct smb_com_transaction2_spi_req *pSMB = NULL;
4110 struct smb_com_transaction2_spi_rsp *pSMBr = NULL;
4111 struct file_end_of_file_info *parm_data;
4112 int name_len;
4113 int rc = 0;
4114 int bytes_returned = 0;
4115 __u16 params, byte_count, data_count, param_offset, offset;
4116
4117 cFYI(1, ("In SetEOF"));
4118 SetEOFRetry:
4119 rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
4120 (void **) &pSMBr);
4121 if (rc)
4122 return rc;
4123
4124 if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
4125 name_len =
4126 cifsConvertToUCS((__le16 *) pSMB->FileName, fileName,
4127 PATH_MAX, nls_codepage, remap);
4128 name_len++; /* trailing null */
4129 name_len *= 2;
4130 } else { /* BB improve the check for buffer overruns BB */
4131 name_len = strnlen(fileName, PATH_MAX);
4132 name_len++; /* trailing null */
4133 strncpy(pSMB->FileName, fileName, name_len);
4134 }
4135 params = 6 + name_len;
4136 data_count = sizeof (struct file_end_of_file_info);
4137 pSMB->MaxParameterCount = cpu_to_le16(2);
4138 pSMB->MaxDataCount = cpu_to_le16(4100);
4139 pSMB->MaxSetupCount = 0;
4140 pSMB->Reserved = 0;
4141 pSMB->Flags = 0;
4142 pSMB->Timeout = 0;
4143 pSMB->Reserved2 = 0;
4144 param_offset = offsetof(struct smb_com_transaction2_spi_req,
4145 InformationLevel) - 4;
4146 offset = param_offset + params;
4147 if(SetAllocation) {
4148 if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU)
4149 pSMB->InformationLevel =
4150 cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO2);
4151 else
4152 pSMB->InformationLevel =
4153 cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO);
4154 } else /* Set File Size */ {
4155 if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU)
4156 pSMB->InformationLevel =
4157 cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO2);
4158 else
4159 pSMB->InformationLevel =
4160 cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO);
4161 }
4162
4163 parm_data =
4164 (struct file_end_of_file_info *) (((char *) &pSMB->hdr.Protocol) +
4165 offset);
4166 pSMB->ParameterOffset = cpu_to_le16(param_offset);
4167 pSMB->DataOffset = cpu_to_le16(offset);
4168 pSMB->SetupCount = 1;
4169 pSMB->Reserved3 = 0;
4170 pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION);
4171 byte_count = 3 /* pad */ + params + data_count;
4172 pSMB->DataCount = cpu_to_le16(data_count);
4173 pSMB->TotalDataCount = pSMB->DataCount;
4174 pSMB->ParameterCount = cpu_to_le16(params);
4175 pSMB->TotalParameterCount = pSMB->ParameterCount;
4176 pSMB->Reserved4 = 0;
4177 pSMB->hdr.smb_buf_length += byte_count;
4178 parm_data->FileSize = cpu_to_le64(size);
4179 pSMB->ByteCount = cpu_to_le16(byte_count);
4180 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
4181 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
4182 if (rc) {
4183 cFYI(1, ("SetPathInfo (file size) returned %d", rc));
4184 }
4185
4186 cifs_buf_release(pSMB);
4187
4188 if (rc == -EAGAIN)
4189 goto SetEOFRetry;
4190
4191 return rc;
4192 }
4193
4194 int
4195 CIFSSMBSetFileSize(const int xid, struct cifsTconInfo *tcon, __u64 size,
4196 __u16 fid, __u32 pid_of_opener, int SetAllocation)
4197 {
4198 struct smb_com_transaction2_sfi_req *pSMB = NULL;
4199 struct smb_com_transaction2_sfi_rsp *pSMBr = NULL;
4200 char *data_offset;
4201 struct file_end_of_file_info *parm_data;
4202 int rc = 0;
4203 int bytes_returned = 0;
4204 __u16 params, param_offset, offset, byte_count, count;
4205
4206 cFYI(1, ("SetFileSize (via SetFileInfo) %lld",
4207 (long long)size));
4208 rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB);
4209
4210 if (rc)
4211 return rc;
4212
4213 pSMBr = (struct smb_com_transaction2_sfi_rsp *)pSMB;
4214
4215 pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener);
4216 pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16));
4217
4218 params = 6;
4219 pSMB->MaxSetupCount = 0;
4220 pSMB->Reserved = 0;
4221 pSMB->Flags = 0;
4222 pSMB->Timeout = 0;
4223 pSMB->Reserved2 = 0;
4224 param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4;
4225 offset = param_offset + params;
4226
4227 data_offset = (char *) (&pSMB->hdr.Protocol) + offset;
4228
4229 count = sizeof(struct file_end_of_file_info);
4230 pSMB->MaxParameterCount = cpu_to_le16(2);
4231 pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB PDU from sess */
4232 pSMB->SetupCount = 1;
4233 pSMB->Reserved3 = 0;
4234 pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION);
4235 byte_count = 3 /* pad */ + params + count;
4236 pSMB->DataCount = cpu_to_le16(count);
4237 pSMB->ParameterCount = cpu_to_le16(params);
4238 pSMB->TotalDataCount = pSMB->DataCount;
4239 pSMB->TotalParameterCount = pSMB->ParameterCount;
4240 pSMB->ParameterOffset = cpu_to_le16(param_offset);
4241 parm_data =
4242 (struct file_end_of_file_info *) (((char *) &pSMB->hdr.Protocol) +
4243 offset);
4244 pSMB->DataOffset = cpu_to_le16(offset);
4245 parm_data->FileSize = cpu_to_le64(size);
4246 pSMB->Fid = fid;
4247 if(SetAllocation) {
4248 if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU)
4249 pSMB->InformationLevel =
4250 cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO2);
4251 else
4252 pSMB->InformationLevel =
4253 cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO);
4254 } else /* Set File Size */ {
4255 if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU)
4256 pSMB->InformationLevel =
4257 cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO2);
4258 else
4259 pSMB->InformationLevel =
4260 cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO);
4261 }
4262 pSMB->Reserved4 = 0;
4263 pSMB->hdr.smb_buf_length += byte_count;
4264 pSMB->ByteCount = cpu_to_le16(byte_count);
4265 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
4266 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
4267 if (rc) {
4268 cFYI(1,
4269 ("Send error in SetFileInfo (SetFileSize) = %d",
4270 rc));
4271 }
4272
4273 if (pSMB)
4274 cifs_small_buf_release(pSMB);
4275
4276 /* Note: On -EAGAIN error only caller can retry on handle based calls
4277 since file handle passed in no longer valid */
4278
4279 return rc;
4280 }
4281
4282 /* Some legacy servers such as NT4 require that the file times be set on
4283 an open handle, rather than by pathname - this is awkward due to
4284 potential access conflicts on the open, but it is unavoidable for these
4285 old servers since the only other choice is to go from 100 nanosecond DCE
4286 time and resort to the original setpathinfo level which takes the ancient
4287 DOS time format with 2 second granularity */
4288 int
4289 CIFSSMBSetFileTimes(const int xid, struct cifsTconInfo *tcon, const FILE_BASIC_INFO * data,
4290 __u16 fid)
4291 {
4292 struct smb_com_transaction2_sfi_req *pSMB = NULL;
4293 struct smb_com_transaction2_sfi_rsp *pSMBr = NULL;
4294 char *data_offset;
4295 int rc = 0;
4296 int bytes_returned = 0;
4297 __u16 params, param_offset, offset, byte_count, count;
4298
4299 cFYI(1, ("Set Times (via SetFileInfo)"));
4300 rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB);
4301
4302 if (rc)
4303 return rc;
4304
4305 pSMBr = (struct smb_com_transaction2_sfi_rsp *)pSMB;
4306
4307 /* At this point there is no need to override the current pid
4308 with the pid of the opener, but that could change if we someday
4309 use an existing handle (rather than opening one on the fly) */
4310 /* pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener);
4311 pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16));*/
4312
4313 params = 6;
4314 pSMB->MaxSetupCount = 0;
4315 pSMB->Reserved = 0;
4316 pSMB->Flags = 0;
4317 pSMB->Timeout = 0;
4318 pSMB->Reserved2 = 0;
4319 param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4;
4320 offset = param_offset + params;
4321
4322 data_offset = (char *) (&pSMB->hdr.Protocol) + offset;
4323
4324 count = sizeof (FILE_BASIC_INFO);
4325 pSMB->MaxParameterCount = cpu_to_le16(2);
4326 pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB PDU from sess */
4327 pSMB->SetupCount = 1;
4328 pSMB->Reserved3 = 0;
4329 pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION);
4330 byte_count = 3 /* pad */ + params + count;
4331 pSMB->DataCount = cpu_to_le16(count);
4332 pSMB->ParameterCount = cpu_to_le16(params);
4333 pSMB->TotalDataCount = pSMB->DataCount;
4334 pSMB->TotalParameterCount = pSMB->ParameterCount;
4335 pSMB->ParameterOffset = cpu_to_le16(param_offset);
4336 pSMB->DataOffset = cpu_to_le16(offset);
4337 pSMB->Fid = fid;
4338 if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU)
4339 pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO2);
4340 else
4341 pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO);
4342 pSMB->Reserved4 = 0;
4343 pSMB->hdr.smb_buf_length += byte_count;
4344 pSMB->ByteCount = cpu_to_le16(byte_count);
4345 memcpy(data_offset,data,sizeof(FILE_BASIC_INFO));
4346 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
4347 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
4348 if (rc) {
4349 cFYI(1,("Send error in Set Time (SetFileInfo) = %d",rc));
4350 }
4351
4352 cifs_small_buf_release(pSMB);
4353
4354 /* Note: On -EAGAIN error only caller can retry on handle based calls
4355 since file handle passed in no longer valid */
4356
4357 return rc;
4358 }
4359
4360
4361 int
4362 CIFSSMBSetTimes(const int xid, struct cifsTconInfo *tcon, const char *fileName,
4363 const FILE_BASIC_INFO * data,
4364 const struct nls_table *nls_codepage, int remap)
4365 {
4366 TRANSACTION2_SPI_REQ *pSMB = NULL;
4367 TRANSACTION2_SPI_RSP *pSMBr = NULL;
4368 int name_len;
4369 int rc = 0;
4370 int bytes_returned = 0;
4371 char *data_offset;
4372 __u16 params, param_offset, offset, byte_count, count;
4373
4374 cFYI(1, ("In SetTimes"));
4375
4376 SetTimesRetry:
4377 rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
4378 (void **) &pSMBr);
4379 if (rc)
4380 return rc;
4381
4382 if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
4383 name_len =
4384 cifsConvertToUCS((__le16 *) pSMB->FileName, fileName,
4385 PATH_MAX, nls_codepage, remap);
4386 name_len++; /* trailing null */
4387 name_len *= 2;
4388 } else { /* BB improve the check for buffer overruns BB */
4389 name_len = strnlen(fileName, PATH_MAX);
4390 name_len++; /* trailing null */
4391 strncpy(pSMB->FileName, fileName, name_len);
4392 }
4393
4394 params = 6 + name_len;
4395 count = sizeof (FILE_BASIC_INFO);
4396 pSMB->MaxParameterCount = cpu_to_le16(2);
4397 pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find exact max SMB PDU from sess structure BB */
4398 pSMB->MaxSetupCount = 0;
4399 pSMB->Reserved = 0;
4400 pSMB->Flags = 0;
4401 pSMB->Timeout = 0;
4402 pSMB->Reserved2 = 0;
4403 param_offset = offsetof(struct smb_com_transaction2_spi_req,
4404 InformationLevel) - 4;
4405 offset = param_offset + params;
4406 data_offset = (char *) (&pSMB->hdr.Protocol) + offset;
4407 pSMB->ParameterOffset = cpu_to_le16(param_offset);
4408 pSMB->DataOffset = cpu_to_le16(offset);
4409 pSMB->SetupCount = 1;
4410 pSMB->Reserved3 = 0;
4411 pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION);
4412 byte_count = 3 /* pad */ + params + count;
4413
4414 pSMB->DataCount = cpu_to_le16(count);
4415 pSMB->ParameterCount = cpu_to_le16(params);
4416 pSMB->TotalDataCount = pSMB->DataCount;
4417 pSMB->TotalParameterCount = pSMB->ParameterCount;
4418 if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU)
4419 pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO2);
4420 else
4421 pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO);
4422 pSMB->Reserved4 = 0;
4423 pSMB->hdr.smb_buf_length += byte_count;
4424 memcpy(data_offset, data, sizeof (FILE_BASIC_INFO));
4425 pSMB->ByteCount = cpu_to_le16(byte_count);
4426 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
4427 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
4428 if (rc) {
4429 cFYI(1, ("SetPathInfo (times) returned %d", rc));
4430 }
4431
4432 cifs_buf_release(pSMB);
4433
4434 if (rc == -EAGAIN)
4435 goto SetTimesRetry;
4436
4437 return rc;
4438 }
4439
4440 /* Can not be used to set time stamps yet (due to old DOS time format) */
4441 /* Can be used to set attributes */
4442 #if 0 /* Possibly not needed - since it turns out that strangely NT4 has a bug
4443 handling it anyway and NT4 was what we thought it would be needed for
4444 Do not delete it until we prove whether needed for Win9x though */
4445 int
4446 CIFSSMBSetAttrLegacy(int xid, struct cifsTconInfo *tcon, char *fileName,
4447 __u16 dos_attrs, const struct nls_table *nls_codepage)
4448 {
4449 SETATTR_REQ *pSMB = NULL;
4450 SETATTR_RSP *pSMBr = NULL;
4451 int rc = 0;
4452 int bytes_returned;
4453 int name_len;
4454
4455 cFYI(1, ("In SetAttrLegacy"));
4456
4457 SetAttrLgcyRetry:
4458 rc = smb_init(SMB_COM_SETATTR, 8, tcon, (void **) &pSMB,
4459 (void **) &pSMBr);
4460 if (rc)
4461 return rc;
4462
4463 if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
4464 name_len =
4465 ConvertToUCS((__le16 *) pSMB->fileName, fileName,
4466 PATH_MAX, nls_codepage);
4467 name_len++; /* trailing null */
4468 name_len *= 2;
4469 } else { /* BB improve the check for buffer overruns BB */
4470 name_len = strnlen(fileName, PATH_MAX);
4471 name_len++; /* trailing null */
4472 strncpy(pSMB->fileName, fileName, name_len);
4473 }
4474 pSMB->attr = cpu_to_le16(dos_attrs);
4475 pSMB->BufferFormat = 0x04;
4476 pSMB->hdr.smb_buf_length += name_len + 1;
4477 pSMB->ByteCount = cpu_to_le16(name_len + 1);
4478 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
4479 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
4480 if (rc) {
4481 cFYI(1, ("Error in LegacySetAttr = %d", rc));
4482 }
4483
4484 cifs_buf_release(pSMB);
4485
4486 if (rc == -EAGAIN)
4487 goto SetAttrLgcyRetry;
4488
4489 return rc;
4490 }
4491 #endif /* temporarily unneeded SetAttr legacy function */
4492
4493 int
4494 CIFSSMBUnixSetPerms(const int xid, struct cifsTconInfo *tcon,
4495 char *fileName, __u64 mode, __u64 uid, __u64 gid,
4496 dev_t device, const struct nls_table *nls_codepage,
4497 int remap)
4498 {
4499 TRANSACTION2_SPI_REQ *pSMB = NULL;
4500 TRANSACTION2_SPI_RSP *pSMBr = NULL;
4501 int name_len;
4502 int rc = 0;
4503 int bytes_returned = 0;
4504 FILE_UNIX_BASIC_INFO *data_offset;
4505 __u16 params, param_offset, offset, count, byte_count;
4506
4507 cFYI(1, ("In SetUID/GID/Mode"));
4508 setPermsRetry:
4509 rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
4510 (void **) &pSMBr);
4511 if (rc)
4512 return rc;
4513
4514 if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
4515 name_len =
4516 cifsConvertToUCS((__le16 *) pSMB->FileName, fileName,
4517 PATH_MAX, nls_codepage, remap);
4518 name_len++; /* trailing null */
4519 name_len *= 2;
4520 } else { /* BB improve the check for buffer overruns BB */
4521 name_len = strnlen(fileName, PATH_MAX);
4522 name_len++; /* trailing null */
4523 strncpy(pSMB->FileName, fileName, name_len);
4524 }
4525
4526 params = 6 + name_len;
4527 count = sizeof (FILE_UNIX_BASIC_INFO);
4528 pSMB->MaxParameterCount = cpu_to_le16(2);
4529 pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find exact max SMB PDU from sess structure BB */
4530 pSMB->MaxSetupCount = 0;
4531 pSMB->Reserved = 0;
4532 pSMB->Flags = 0;
4533 pSMB->Timeout = 0;
4534 pSMB->Reserved2 = 0;
4535 param_offset = offsetof(struct smb_com_transaction2_spi_req,
4536 InformationLevel) - 4;
4537 offset = param_offset + params;
4538 data_offset =
4539 (FILE_UNIX_BASIC_INFO *) ((char *) &pSMB->hdr.Protocol +
4540 offset);
4541 memset(data_offset, 0, count);
4542 pSMB->DataOffset = cpu_to_le16(offset);
4543 pSMB->ParameterOffset = cpu_to_le16(param_offset);
4544 pSMB->SetupCount = 1;
4545 pSMB->Reserved3 = 0;
4546 pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION);
4547 byte_count = 3 /* pad */ + params + count;
4548 pSMB->ParameterCount = cpu_to_le16(params);
4549 pSMB->DataCount = cpu_to_le16(count);
4550 pSMB->TotalParameterCount = pSMB->ParameterCount;
4551 pSMB->TotalDataCount = pSMB->DataCount;
4552 pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_BASIC);
4553 pSMB->Reserved4 = 0;
4554 pSMB->hdr.smb_buf_length += byte_count;
4555 data_offset->Uid = cpu_to_le64(uid);
4556 data_offset->Gid = cpu_to_le64(gid);
4557 /* better to leave device as zero when it is */
4558 data_offset->DevMajor = cpu_to_le64(MAJOR(device));
4559 data_offset->DevMinor = cpu_to_le64(MINOR(device));
4560 data_offset->Permissions = cpu_to_le64(mode);
4561
4562 if(S_ISREG(mode))
4563 data_offset->Type = cpu_to_le32(UNIX_FILE);
4564 else if(S_ISDIR(mode))
4565 data_offset->Type = cpu_to_le32(UNIX_DIR);
4566 else if(S_ISLNK(mode))
4567 data_offset->Type = cpu_to_le32(UNIX_SYMLINK);
4568 else if(S_ISCHR(mode))
4569 data_offset->Type = cpu_to_le32(UNIX_CHARDEV);
4570 else if(S_ISBLK(mode))
4571 data_offset->Type = cpu_to_le32(UNIX_BLOCKDEV);
4572 else if(S_ISFIFO(mode))
4573 data_offset->Type = cpu_to_le32(UNIX_FIFO);
4574 else if(S_ISSOCK(mode))
4575 data_offset->Type = cpu_to_le32(UNIX_SOCKET);
4576
4577
4578 pSMB->ByteCount = cpu_to_le16(byte_count);
4579 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
4580 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
4581 if (rc) {
4582 cFYI(1, ("SetPathInfo (perms) returned %d", rc));
4583 }
4584
4585 if (pSMB)
4586 cifs_buf_release(pSMB);
4587 if (rc == -EAGAIN)
4588 goto setPermsRetry;
4589 return rc;
4590 }
4591
4592 int CIFSSMBNotify(const int xid, struct cifsTconInfo *tcon,
4593 const int notify_subdirs, const __u16 netfid,
4594 __u32 filter, struct file * pfile, int multishot,
4595 const struct nls_table *nls_codepage)
4596 {
4597 int rc = 0;
4598 struct smb_com_transaction_change_notify_req * pSMB = NULL;
4599 struct smb_com_ntransaction_change_notify_rsp * pSMBr = NULL;
4600 struct dir_notify_req *dnotify_req;
4601 int bytes_returned;
4602
4603 cFYI(1, ("In CIFSSMBNotify for file handle %d",(int)netfid));
4604 rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB,
4605 (void **) &pSMBr);
4606 if (rc)
4607 return rc;
4608
4609 pSMB->TotalParameterCount = 0 ;
4610 pSMB->TotalDataCount = 0;
4611 pSMB->MaxParameterCount = cpu_to_le32(2);
4612 /* BB find exact data count max from sess structure BB */
4613 pSMB->MaxDataCount = 0; /* same in little endian or be */
4614 /* BB VERIFY verify which is correct for above BB */
4615 pSMB->MaxDataCount = cpu_to_le32((tcon->ses->server->maxBuf -
4616 MAX_CIFS_HDR_SIZE) & 0xFFFFFF00);
4617
4618 pSMB->MaxSetupCount = 4;
4619 pSMB->Reserved = 0;
4620 pSMB->ParameterOffset = 0;
4621 pSMB->DataCount = 0;
4622 pSMB->DataOffset = 0;
4623 pSMB->SetupCount = 4; /* single byte does not need le conversion */
4624 pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_NOTIFY_CHANGE);
4625 pSMB->ParameterCount = pSMB->TotalParameterCount;
4626 if(notify_subdirs)
4627 pSMB->WatchTree = 1; /* one byte - no le conversion needed */
4628 pSMB->Reserved2 = 0;
4629 pSMB->CompletionFilter = cpu_to_le32(filter);
4630 pSMB->Fid = netfid; /* file handle always le */
4631 pSMB->ByteCount = 0;
4632
4633 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
4634 (struct smb_hdr *) pSMBr, &bytes_returned, -1);
4635 if (rc) {
4636 cFYI(1, ("Error in Notify = %d", rc));
4637 } else {
4638 /* Add file to outstanding requests */
4639 /* BB change to kmem cache alloc */
4640 dnotify_req = (struct dir_notify_req *) kmalloc(
4641 sizeof(struct dir_notify_req),
4642 GFP_KERNEL);
4643 if(dnotify_req) {
4644 dnotify_req->Pid = pSMB->hdr.Pid;
4645 dnotify_req->PidHigh = pSMB->hdr.PidHigh;
4646 dnotify_req->Mid = pSMB->hdr.Mid;
4647 dnotify_req->Tid = pSMB->hdr.Tid;
4648 dnotify_req->Uid = pSMB->hdr.Uid;
4649 dnotify_req->netfid = netfid;
4650 dnotify_req->pfile = pfile;
4651 dnotify_req->filter = filter;
4652 dnotify_req->multishot = multishot;
4653 spin_lock(&GlobalMid_Lock);
4654 list_add_tail(&dnotify_req->lhead,
4655 &GlobalDnotifyReqList);
4656 spin_unlock(&GlobalMid_Lock);
4657 } else
4658 rc = -ENOMEM;
4659 }
4660 cifs_buf_release(pSMB);
4661 return rc;
4662 }
4663 #ifdef CONFIG_CIFS_XATTR
4664 ssize_t
4665 CIFSSMBQAllEAs(const int xid, struct cifsTconInfo *tcon,
4666 const unsigned char *searchName,
4667 char * EAData, size_t buf_size,
4668 const struct nls_table *nls_codepage, int remap)
4669 {
4670 /* BB assumes one setup word */
4671 TRANSACTION2_QPI_REQ *pSMB = NULL;
4672 TRANSACTION2_QPI_RSP *pSMBr = NULL;
4673 int rc = 0;
4674 int bytes_returned;
4675 int name_len;
4676 struct fea * temp_fea;
4677 char * temp_ptr;
4678 __u16 params, byte_count;
4679
4680 cFYI(1, ("In Query All EAs path %s", searchName));
4681 QAllEAsRetry:
4682 rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
4683 (void **) &pSMBr);
4684 if (rc)
4685 return rc;
4686
4687 if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
4688 name_len =
4689 cifsConvertToUCS((__le16 *) pSMB->FileName, searchName,
4690 PATH_MAX, nls_codepage, remap);
4691 name_len++; /* trailing null */
4692 name_len *= 2;
4693 } else { /* BB improve the check for buffer overruns BB */
4694 name_len = strnlen(searchName, PATH_MAX);
4695 name_len++; /* trailing null */
4696 strncpy(pSMB->FileName, searchName, name_len);
4697 }
4698
4699 params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */ ;
4700 pSMB->TotalDataCount = 0;
4701 pSMB->MaxParameterCount = cpu_to_le16(2);
4702 pSMB->MaxDataCount = cpu_to_le16(4000); /* BB find exact max SMB PDU from sess structure BB */
4703 pSMB->MaxSetupCount = 0;
4704 pSMB->Reserved = 0;
4705 pSMB->Flags = 0;
4706 pSMB->Timeout = 0;
4707 pSMB->Reserved2 = 0;
4708 pSMB->ParameterOffset = cpu_to_le16(offsetof(
4709 struct smb_com_transaction2_qpi_req ,InformationLevel) - 4);
4710 pSMB->DataCount = 0;
4711 pSMB->DataOffset = 0;
4712 pSMB->SetupCount = 1;
4713 pSMB->Reserved3 = 0;
4714 pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION);
4715 byte_count = params + 1 /* pad */ ;
4716 pSMB->TotalParameterCount = cpu_to_le16(params);
4717 pSMB->ParameterCount = pSMB->TotalParameterCount;
4718 pSMB->InformationLevel = cpu_to_le16(SMB_INFO_QUERY_ALL_EAS);
4719 pSMB->Reserved4 = 0;
4720 pSMB->hdr.smb_buf_length += byte_count;
4721 pSMB->ByteCount = cpu_to_le16(byte_count);
4722
4723 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
4724 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
4725 if (rc) {
4726 cFYI(1, ("Send error in QueryAllEAs = %d", rc));
4727 } else { /* decode response */
4728 rc = validate_t2((struct smb_t2_rsp *)pSMBr);
4729
4730 /* BB also check enough total bytes returned */
4731 /* BB we need to improve the validity checking
4732 of these trans2 responses */
4733 if (rc || (pSMBr->ByteCount < 4))
4734 rc = -EIO; /* bad smb */
4735 /* else if (pFindData){
4736 memcpy((char *) pFindData,
4737 (char *) &pSMBr->hdr.Protocol +
4738 data_offset, kl);
4739 }*/ else {
4740 /* check that length of list is not more than bcc */
4741 /* check that each entry does not go beyond length
4742 of list */
4743 /* check that each element of each entry does not
4744 go beyond end of list */
4745 __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
4746 struct fealist * ea_response_data;
4747 rc = 0;
4748 /* validate_trans2_offsets() */
4749 /* BB to check if(start of smb + data_offset > &bcc+ bcc)*/
4750 ea_response_data = (struct fealist *)
4751 (((char *) &pSMBr->hdr.Protocol) +
4752 data_offset);
4753 name_len = le32_to_cpu(ea_response_data->list_len);
4754 cFYI(1,("ea length %d", name_len));
4755 if(name_len <= 8) {
4756 /* returned EA size zeroed at top of function */
4757 cFYI(1,("empty EA list returned from server"));
4758 } else {
4759 /* account for ea list len */
4760 name_len -= 4;
4761 temp_fea = ea_response_data->list;
4762 temp_ptr = (char *)temp_fea;
4763 while(name_len > 0) {
4764 __u16 value_len;
4765 name_len -= 4;
4766 temp_ptr += 4;
4767 rc += temp_fea->name_len;
4768 /* account for prefix user. and trailing null */
4769 rc = rc + 5 + 1;
4770 if(rc<(int)buf_size) {
4771 memcpy(EAData,"user.",5);
4772 EAData+=5;
4773 memcpy(EAData,temp_ptr,temp_fea->name_len);
4774 EAData+=temp_fea->name_len;
4775 /* null terminate name */
4776 *EAData = 0;
4777 EAData = EAData + 1;
4778 } else if(buf_size == 0) {
4779 /* skip copy - calc size only */
4780 } else {
4781 /* stop before overrun buffer */
4782 rc = -ERANGE;
4783 break;
4784 }
4785 name_len -= temp_fea->name_len;
4786 temp_ptr += temp_fea->name_len;
4787 /* account for trailing null */
4788 name_len--;
4789 temp_ptr++;
4790 value_len = le16_to_cpu(temp_fea->value_len);
4791 name_len -= value_len;
4792 temp_ptr += value_len;
4793 /* BB check that temp_ptr is still within smb BB*/
4794 /* no trailing null to account for in value len */
4795 /* go on to next EA */
4796 temp_fea = (struct fea *)temp_ptr;
4797 }
4798 }
4799 }
4800 }
4801 if (pSMB)
4802 cifs_buf_release(pSMB);
4803 if (rc == -EAGAIN)
4804 goto QAllEAsRetry;
4805
4806 return (ssize_t)rc;
4807 }
4808
4809 ssize_t CIFSSMBQueryEA(const int xid,struct cifsTconInfo * tcon,
4810 const unsigned char * searchName,const unsigned char * ea_name,
4811 unsigned char * ea_value, size_t buf_size,
4812 const struct nls_table *nls_codepage, int remap)
4813 {
4814 TRANSACTION2_QPI_REQ *pSMB = NULL;
4815 TRANSACTION2_QPI_RSP *pSMBr = NULL;
4816 int rc = 0;
4817 int bytes_returned;
4818 int name_len;
4819 struct fea * temp_fea;
4820 char * temp_ptr;
4821 __u16 params, byte_count;
4822
4823 cFYI(1, ("In Query EA path %s", searchName));
4824 QEARetry:
4825 rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
4826 (void **) &pSMBr);
4827 if (rc)
4828 return rc;
4829
4830 if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
4831 name_len =
4832 cifsConvertToUCS((__le16 *) pSMB->FileName, searchName,
4833 PATH_MAX, nls_codepage, remap);
4834 name_len++; /* trailing null */
4835 name_len *= 2;
4836 } else { /* BB improve the check for buffer overruns BB */
4837 name_len = strnlen(searchName, PATH_MAX);
4838 name_len++; /* trailing null */
4839 strncpy(pSMB->FileName, searchName, name_len);
4840 }
4841
4842 params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */ ;
4843 pSMB->TotalDataCount = 0;
4844 pSMB->MaxParameterCount = cpu_to_le16(2);
4845 pSMB->MaxDataCount = cpu_to_le16(4000); /* BB find exact max SMB PDU from sess structure BB */
4846 pSMB->MaxSetupCount = 0;
4847 pSMB->Reserved = 0;
4848 pSMB->Flags = 0;
4849 pSMB->Timeout = 0;
4850 pSMB->Reserved2 = 0;
4851 pSMB->ParameterOffset = cpu_to_le16(offsetof(
4852 struct smb_com_transaction2_qpi_req ,InformationLevel) - 4);
4853 pSMB->DataCount = 0;
4854 pSMB->DataOffset = 0;
4855 pSMB->SetupCount = 1;
4856 pSMB->Reserved3 = 0;
4857 pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION);
4858 byte_count = params + 1 /* pad */ ;
4859 pSMB->TotalParameterCount = cpu_to_le16(params);
4860 pSMB->ParameterCount = pSMB->TotalParameterCount;
4861 pSMB->InformationLevel = cpu_to_le16(SMB_INFO_QUERY_ALL_EAS);
4862 pSMB->Reserved4 = 0;
4863 pSMB->hdr.smb_buf_length += byte_count;
4864 pSMB->ByteCount = cpu_to_le16(byte_count);
4865
4866 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
4867 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
4868 if (rc) {
4869 cFYI(1, ("Send error in Query EA = %d", rc));
4870 } else { /* decode response */
4871 rc = validate_t2((struct smb_t2_rsp *)pSMBr);
4872
4873 /* BB also check enough total bytes returned */
4874 /* BB we need to improve the validity checking
4875 of these trans2 responses */
4876 if (rc || (pSMBr->ByteCount < 4))
4877 rc = -EIO; /* bad smb */
4878 /* else if (pFindData){
4879 memcpy((char *) pFindData,
4880 (char *) &pSMBr->hdr.Protocol +
4881 data_offset, kl);
4882 }*/ else {
4883 /* check that length of list is not more than bcc */
4884 /* check that each entry does not go beyond length
4885 of list */
4886 /* check that each element of each entry does not
4887 go beyond end of list */
4888 __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
4889 struct fealist * ea_response_data;
4890 rc = -ENODATA;
4891 /* validate_trans2_offsets() */
4892 /* BB to check if(start of smb + data_offset > &bcc+ bcc)*/
4893 ea_response_data = (struct fealist *)
4894 (((char *) &pSMBr->hdr.Protocol) +
4895 data_offset);
4896 name_len = le32_to_cpu(ea_response_data->list_len);
4897 cFYI(1,("ea length %d", name_len));
4898 if(name_len <= 8) {
4899 /* returned EA size zeroed at top of function */
4900 cFYI(1,("empty EA list returned from server"));
4901 } else {
4902 /* account for ea list len */
4903 name_len -= 4;
4904 temp_fea = ea_response_data->list;
4905 temp_ptr = (char *)temp_fea;
4906 /* loop through checking if we have a matching
4907 name and then return the associated value */
4908 while(name_len > 0) {
4909 __u16 value_len;
4910 name_len -= 4;
4911 temp_ptr += 4;
4912 value_len = le16_to_cpu(temp_fea->value_len);
4913 /* BB validate that value_len falls within SMB,
4914 even though maximum for name_len is 255 */
4915 if(memcmp(temp_fea->name,ea_name,
4916 temp_fea->name_len) == 0) {
4917 /* found a match */
4918 rc = value_len;
4919 /* account for prefix user. and trailing null */
4920 if(rc<=(int)buf_size) {
4921 memcpy(ea_value,
4922 temp_fea->name+temp_fea->name_len+1,
4923 rc);
4924 /* ea values, unlike ea names,
4925 are not null terminated */
4926 } else if(buf_size == 0) {
4927 /* skip copy - calc size only */
4928 } else {
4929 /* stop before overrun buffer */
4930 rc = -ERANGE;
4931 }
4932 break;
4933 }
4934 name_len -= temp_fea->name_len;
4935 temp_ptr += temp_fea->name_len;
4936 /* account for trailing null */
4937 name_len--;
4938 temp_ptr++;
4939 name_len -= value_len;
4940 temp_ptr += value_len;
4941 /* no trailing null to account for in value len */
4942 /* go on to next EA */
4943 temp_fea = (struct fea *)temp_ptr;
4944 }
4945 }
4946 }
4947 }
4948 if (pSMB)
4949 cifs_buf_release(pSMB);
4950 if (rc == -EAGAIN)
4951 goto QEARetry;
4952
4953 return (ssize_t)rc;
4954 }
4955
4956 int
4957 CIFSSMBSetEA(const int xid, struct cifsTconInfo *tcon, const char *fileName,
4958 const char * ea_name, const void * ea_value,
4959 const __u16 ea_value_len, const struct nls_table *nls_codepage,
4960 int remap)
4961 {
4962 struct smb_com_transaction2_spi_req *pSMB = NULL;
4963 struct smb_com_transaction2_spi_rsp *pSMBr = NULL;
4964 struct fealist *parm_data;
4965 int name_len;
4966 int rc = 0;
4967 int bytes_returned = 0;
4968 __u16 params, param_offset, byte_count, offset, count;
4969
4970 cFYI(1, ("In SetEA"));
4971 SetEARetry:
4972 rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
4973 (void **) &pSMBr);
4974 if (rc)
4975 return rc;
4976
4977 if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
4978 name_len =
4979 cifsConvertToUCS((__le16 *) pSMB->FileName, fileName,
4980 PATH_MAX, nls_codepage, remap);
4981 name_len++; /* trailing null */
4982 name_len *= 2;
4983 } else { /* BB improve the check for buffer overruns BB */
4984 name_len = strnlen(fileName, PATH_MAX);
4985 name_len++; /* trailing null */
4986 strncpy(pSMB->FileName, fileName, name_len);
4987 }
4988
4989 params = 6 + name_len;
4990
4991 /* done calculating parms using name_len of file name,
4992 now use name_len to calculate length of ea name
4993 we are going to create in the inode xattrs */
4994 if(ea_name == NULL)
4995 name_len = 0;
4996 else
4997 name_len = strnlen(ea_name,255);
4998
4999 count = sizeof(*parm_data) + ea_value_len + name_len + 1;
5000 pSMB->MaxParameterCount = cpu_to_le16(2);
5001 pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB size from sess */
5002 pSMB->MaxSetupCount = 0;
5003 pSMB->Reserved = 0;
5004 pSMB->Flags = 0;
5005 pSMB->Timeout = 0;
5006 pSMB->Reserved2 = 0;
5007 param_offset = offsetof(struct smb_com_transaction2_spi_req,
5008 InformationLevel) - 4;
5009 offset = param_offset + params;
5010 pSMB->InformationLevel =
5011 cpu_to_le16(SMB_SET_FILE_EA);
5012
5013 parm_data =
5014 (struct fealist *) (((char *) &pSMB->hdr.Protocol) +
5015 offset);
5016 pSMB->ParameterOffset = cpu_to_le16(param_offset);
5017 pSMB->DataOffset = cpu_to_le16(offset);
5018 pSMB->SetupCount = 1;
5019 pSMB->Reserved3 = 0;
5020 pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION);
5021 byte_count = 3 /* pad */ + params + count;
5022 pSMB->DataCount = cpu_to_le16(count);
5023 parm_data->list_len = cpu_to_le32(count);
5024 parm_data->list[0].EA_flags = 0;
5025 /* we checked above that name len is less than 255 */
5026 parm_data->list[0].name_len = (__u8)name_len;
5027 /* EA names are always ASCII */
5028 if(ea_name)
5029 strncpy(parm_data->list[0].name,ea_name,name_len);
5030 parm_data->list[0].name[name_len] = 0;
5031 parm_data->list[0].value_len = cpu_to_le16(ea_value_len);
5032 /* caller ensures that ea_value_len is less than 64K but
5033 we need to ensure that it fits within the smb */
5034
5035 /*BB add length check that it would fit in negotiated SMB buffer size BB */
5036 /* if(ea_value_len > buffer_size - 512 (enough for header)) */
5037 if(ea_value_len)
5038 memcpy(parm_data->list[0].name+name_len+1,ea_value,ea_value_len);
5039
5040 pSMB->TotalDataCount = pSMB->DataCount;
5041 pSMB->ParameterCount = cpu_to_le16(params);
5042 pSMB->TotalParameterCount = pSMB->ParameterCount;
5043 pSMB->Reserved4 = 0;
5044 pSMB->hdr.smb_buf_length += byte_count;
5045 pSMB->ByteCount = cpu_to_le16(byte_count);
5046 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
5047 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
5048 if (rc) {
5049 cFYI(1, ("SetPathInfo (EA) returned %d", rc));
5050 }
5051
5052 cifs_buf_release(pSMB);
5053
5054 if (rc == -EAGAIN)
5055 goto SetEARetry;
5056
5057 return rc;
5058 }
5059
5060 #endif
Linux kernel - Deliverables
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