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[CIFS] POSIX extensions, SetFSInfo added
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / fs / cifs / cifssmb.c
CommitLineData
1da177e4
LT		 1/*
2 * fs/cifs/cifssmb.c
3 *
4 * Copyright (C) International Business Machines Corp., 2002,2005
5 * Author(s): Steve French (sfrench@us.ibm.com)
6 *
7 * Contains the routines for constructing the SMB PDUs themselves
8 *
9 * This library is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU Lesser General Public License as published
11 * by the Free Software Foundation; either version 2.1 of the License, or
12 * (at your option) any later version.
13 *
14 * This library is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
17 * the GNU Lesser General Public License for more details.
18 *
19 * You should have received a copy of the GNU Lesser General Public License
20 * along with this library; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 */
23
24 /* SMB/CIFS PDU handling routines here - except for leftovers in connect.c */
25 /* These are mostly routines that operate on a pathname, or on a tree id */
26 /* (mounted volume), but there are eight handle based routines which must be */
27 /* treated slightly different for reconnection purposes since we never want */
28 /* to reuse a stale file handle and the caller knows the file handle */
29
30#include <linux/fs.h>
31#include <linux/kernel.h>
32#include <linux/vfs.h>
33#include <linux/posix_acl_xattr.h>
34#include <asm/uaccess.h>
35#include "cifspdu.h"
36#include "cifsglob.h"
37#include "cifsproto.h"
38#include "cifs_unicode.h"
39#include "cifs_debug.h"
40
41#ifdef CONFIG_CIFS_POSIX
42static struct {
43 int index;
44 char *name;
45} protocols[] = {
46 {CIFS_PROT, "\2NT LM 0.12"},
47 {CIFS_PROT, "\2POSIX 2"},
48 {BAD_PROT, "\2"}
49};
50#else
51static struct {
52 int index;
53 char *name;
54} protocols[] = {
55 {CIFS_PROT, "\2NT LM 0.12"},
56 {BAD_PROT, "\2"}
57};
58#endif
59
60
61/* Mark as invalid, all open files on tree connections since they
62 were closed when session to server was lost */
63static void mark_open_files_invalid(struct cifsTconInfo * pTcon)
64{
65 struct cifsFileInfo *open_file = NULL;
66 struct list_head * tmp;
67 struct list_head * tmp1;
68
69/* list all files open on tree connection and mark them invalid */
70 write_lock(&GlobalSMBSeslock);
71 list_for_each_safe(tmp, tmp1, &pTcon->openFileList) {
72 open_file = list_entry(tmp,struct cifsFileInfo, tlist);
73 if(open_file) {
74 open_file->invalidHandle = TRUE;
75 }
76 }
77 write_unlock(&GlobalSMBSeslock);
09d1db5c
SF		 78 /* BB Add call to invalidate_inodes(sb) for all superblocks mounted
79 to this tcon */
1da177e4
LT		 80}
81
82/* If the return code is zero, this function must fill in request_buf pointer */
83static int
84small_smb_init(int smb_command, int wct, struct cifsTconInfo *tcon,
85 void **request_buf /* returned */)
86{
87 int rc = 0;
88
89 /* SMBs NegProt, SessSetup, uLogoff do not have tcon yet so
90 check for tcp and smb session status done differently
91 for those three - in the calling routine */
92 if(tcon) {
31ca3bc3
SF		 93 if((tcon->ses) && (tcon->ses->status != CifsExiting) &&
94 (tcon->ses->server)){
1da177e4
LT		 95 struct nls_table *nls_codepage;
96 /* Give Demultiplex thread up to 10 seconds to
09d1db5c
SF		 97 reconnect, should be greater than cifs socket
98 timeout which is 7 seconds */
1da177e4
LT		 99 while(tcon->ses->server->tcpStatus == CifsNeedReconnect) {
100 wait_event_interruptible_timeout(tcon->ses->server->response_q,
101 (tcon->ses->server->tcpStatus == CifsGood), 10 * HZ);
102 if(tcon->ses->server->tcpStatus == CifsNeedReconnect) {
103 /* on "soft" mounts we wait once */
104 if((tcon->retry == FALSE) ||
105 (tcon->ses->status == CifsExiting)) {
106 cFYI(1,("gave up waiting on reconnect in smb_init"));
107 return -EHOSTDOWN;
09d1db5c
SF		 108 } /* else "hard" mount - keep retrying
109 until process is killed or server
110 comes back on-line */
1da177e4
LT		 111 } else /* TCP session is reestablished now */
112 break;
113
114 }
115
116 nls_codepage = load_nls_default();
117 /* need to prevent multiple threads trying to
118 simultaneously reconnect the same SMB session */
119 down(&tcon->ses->sesSem);
120 if(tcon->ses->status == CifsNeedReconnect)
09d1db5c
SF		 121 rc = cifs_setup_session(0, tcon->ses,
122 nls_codepage);
1da177e4
LT		 123 if(!rc && (tcon->tidStatus == CifsNeedReconnect)) {
124 mark_open_files_invalid(tcon);
09d1db5c
SF		 125 rc = CIFSTCon(0, tcon->ses, tcon->treeName, tcon
126 , nls_codepage);
1da177e4
LT		 127 up(&tcon->ses->sesSem);
128 if(rc == 0)
129 atomic_inc(&tconInfoReconnectCount);
130
131 cFYI(1, ("reconnect tcon rc = %d", rc));
132 /* Removed call to reopen open files here -
09d1db5c
SF		 133 it is safer (and faster) to reopen files
134 one at a time as needed in read and write */
1da177e4
LT		 135
136 /* Check if handle based operation so we
09d1db5c
SF		 137 know whether we can continue or not without
138 returning to caller to reset file handle */
1da177e4
LT		 139 switch(smb_command) {
140 case SMB_COM_READ_ANDX:
141 case SMB_COM_WRITE_ANDX:
142 case SMB_COM_CLOSE:
143 case SMB_COM_FIND_CLOSE2:
144 case SMB_COM_LOCKING_ANDX: {
145 unload_nls(nls_codepage);
146 return -EAGAIN;
147 }
148 }
149 } else {
150 up(&tcon->ses->sesSem);
151 }
152 unload_nls(nls_codepage);
153
154 } else {
155 return -EIO;
156 }
157 }
158 if(rc)
159 return rc;
160
161 *request_buf = cifs_small_buf_get();
162 if (*request_buf == NULL) {
163 /* BB should we add a retry in here if not a writepage? */
164 return -ENOMEM;
165 }
166
167 header_assemble((struct smb_hdr *) *request_buf, smb_command, tcon,wct);
168
169#ifdef CONFIG_CIFS_STATS
170 if(tcon != NULL) {
171 atomic_inc(&tcon->num_smbs_sent);
172 }
173#endif /* CONFIG_CIFS_STATS */
174 return rc;
175}
176
177/* If the return code is zero, this function must fill in request_buf pointer */
178static int
179smb_init(int smb_command, int wct, struct cifsTconInfo *tcon,
180 void **request_buf /* returned */ ,
181 void **response_buf /* returned */ )
182{
183 int rc = 0;
184
185 /* SMBs NegProt, SessSetup, uLogoff do not have tcon yet so
186 check for tcp and smb session status done differently
187 for those three - in the calling routine */
188 if(tcon) {
31ca3bc3
SF		 189 if((tcon->ses) && (tcon->ses->status != CifsExiting) &&
190 (tcon->ses->server)){
1da177e4 191 struct nls_table *nls_codepage;
09d1db5c
SF		 192 /* Give Demultiplex thread up to 10 seconds to
193 reconnect, should be greater than cifs socket
194 timeout which is 7 seconds */
1da177e4
LT		 195 while(tcon->ses->server->tcpStatus == CifsNeedReconnect) {
196 wait_event_interruptible_timeout(tcon->ses->server->response_q,
197 (tcon->ses->server->tcpStatus == CifsGood), 10 * HZ);
09d1db5c
SF		 198 if(tcon->ses->server->tcpStatus ==
199 CifsNeedReconnect) {
1da177e4
LT		 200 /* on "soft" mounts we wait once */
201 if((tcon->retry == FALSE) ||
202 (tcon->ses->status == CifsExiting)) {
203 cFYI(1,("gave up waiting on reconnect in smb_init"));
204 return -EHOSTDOWN;
09d1db5c
SF		 205 } /* else "hard" mount - keep retrying
206 until process is killed or server
207 comes on-line */
1da177e4
LT		 208 } else /* TCP session is reestablished now */
209 break;
210
211 }
212
213 nls_codepage = load_nls_default();
214 /* need to prevent multiple threads trying to
215 simultaneously reconnect the same SMB session */
216 down(&tcon->ses->sesSem);
217 if(tcon->ses->status == CifsNeedReconnect)
09d1db5c
SF		 218 rc = cifs_setup_session(0, tcon->ses,
219 nls_codepage);
1da177e4
LT		 220 if(!rc && (tcon->tidStatus == CifsNeedReconnect)) {
221 mark_open_files_invalid(tcon);
09d1db5c
SF		 222 rc = CIFSTCon(0, tcon->ses, tcon->treeName,
223 tcon, nls_codepage);
1da177e4
LT		 224 up(&tcon->ses->sesSem);
225 if(rc == 0)
226 atomic_inc(&tconInfoReconnectCount);
227
228 cFYI(1, ("reconnect tcon rc = %d", rc));
229 /* Removed call to reopen open files here -
09d1db5c
SF		 230 it is safer (and faster) to reopen files
231 one at a time as needed in read and write */
1da177e4
LT		 232
233 /* Check if handle based operation so we
09d1db5c
SF		 234 know whether we can continue or not without
235 returning to caller to reset file handle */
1da177e4
LT		 236 switch(smb_command) {
237 case SMB_COM_READ_ANDX:
238 case SMB_COM_WRITE_ANDX:
239 case SMB_COM_CLOSE:
240 case SMB_COM_FIND_CLOSE2:
241 case SMB_COM_LOCKING_ANDX: {
242 unload_nls(nls_codepage);
243 return -EAGAIN;
244 }
245 }
246 } else {
247 up(&tcon->ses->sesSem);
248 }
249 unload_nls(nls_codepage);
250
251 } else {
252 return -EIO;
253 }
254 }
255 if(rc)
256 return rc;
257
258 *request_buf = cifs_buf_get();
259 if (*request_buf == NULL) {
260 /* BB should we add a retry in here if not a writepage? */
261 return -ENOMEM;
262 }
263 /* Although the original thought was we needed the response buf for */
264 /* potential retries of smb operations it turns out we can determine */
265 /* from the mid flags when the request buffer can be resent without */
266 /* having to use a second distinct buffer for the response */
267 *response_buf = *request_buf;
268
269 header_assemble((struct smb_hdr *) *request_buf, smb_command, tcon,
270 wct /*wct */ );
271
272#ifdef CONFIG_CIFS_STATS
273 if(tcon != NULL) {
274 atomic_inc(&tcon->num_smbs_sent);
275 }
276#endif /* CONFIG_CIFS_STATS */
277 return rc;
278}
279
280static int validate_t2(struct smb_t2_rsp * pSMB)
281{
282 int rc = -EINVAL;
283 int total_size;
284 char * pBCC;
285
286 /* check for plausible wct, bcc and t2 data and parm sizes */
287 /* check for parm and data offset going beyond end of smb */
288 if(pSMB->hdr.WordCount >= 10) {
289 if((le16_to_cpu(pSMB->t2_rsp.ParameterOffset) <= 1024) &&
290 (le16_to_cpu(pSMB->t2_rsp.DataOffset) <= 1024)) {
291 /* check that bcc is at least as big as parms + data */
292 /* check that bcc is less than negotiated smb buffer */
293 total_size = le16_to_cpu(pSMB->t2_rsp.ParameterCount);
294 if(total_size < 512) {
295 total_size+=le16_to_cpu(pSMB->t2_rsp.DataCount);
296 /* BCC le converted in SendReceive */
09d1db5c
SF		 297 pBCC = (pSMB->hdr.WordCount * 2) +
298 sizeof(struct smb_hdr) +
1da177e4
LT		 299 (char *)pSMB;
300 if((total_size <= (*(u16 *)pBCC)) &&
301 (total_size <
302 CIFSMaxBufSize+MAX_CIFS_HDR_SIZE)) {
303 return 0;
304 }
305
306 }
307 }
308 }
309 cifs_dump_mem("Invalid transact2 SMB: ",(char *)pSMB,
310 sizeof(struct smb_t2_rsp) + 16);
311 return rc;
312}
313int
314CIFSSMBNegotiate(unsigned int xid, struct cifsSesInfo *ses)
315{
316 NEGOTIATE_REQ *pSMB;
317 NEGOTIATE_RSP *pSMBr;
318 int rc = 0;
319 int bytes_returned;
320 struct TCP_Server_Info * server;
321 u16 count;
322
323 if(ses->server)
324 server = ses->server;
325 else {
326 rc = -EIO;
327 return rc;
328 }
329 rc = smb_init(SMB_COM_NEGOTIATE, 0, NULL /* no tcon yet */ ,
330 (void **) &pSMB, (void **) &pSMBr);
331 if (rc)
332 return rc;
333
334 pSMB->hdr.Flags2 |= SMBFLG2_UNICODE;
335 if (extended_security)
336 pSMB->hdr.Flags2 |= SMBFLG2_EXT_SEC;
337
338 count = strlen(protocols[0].name) + 1;
339 strncpy(pSMB->DialectsArray, protocols[0].name, 30);
340 /* null guaranteed to be at end of source and target buffers anyway */
341
342 pSMB->hdr.smb_buf_length += count;
343 pSMB->ByteCount = cpu_to_le16(count);
344
345 rc = SendReceive(xid, ses, (struct smb_hdr *) pSMB,
346 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
347 if (rc == 0) {
348 server->secMode = pSMBr->SecurityMode;
09d1db5c
SF		 349 server->secType = NTLM; /* BB override default for
350 NTLMv2 or kerberos v5 */
351 /* one byte - no need to convert this or EncryptionKeyLen
352 from little endian */
1da177e4
LT		 353 server->maxReq = le16_to_cpu(pSMBr->MaxMpxCount);
354 /* probably no need to store and check maxvcs */
355 server->maxBuf =
356 min(le32_to_cpu(pSMBr->MaxBufferSize),
357 (__u32) CIFSMaxBufSize + MAX_CIFS_HDR_SIZE);
358 server->maxRw = le32_to_cpu(pSMBr->MaxRawSize);
359 cFYI(0, ("Max buf = %d ", ses->server->maxBuf));
360 GETU32(ses->server->sessid) = le32_to_cpu(pSMBr->SessionKey);
361 server->capabilities = le32_to_cpu(pSMBr->Capabilities);
362 server->timeZone = le16_to_cpu(pSMBr->ServerTimeZone);
363 /* BB with UTC do we ever need to be using srvr timezone? */
364 if (pSMBr->EncryptionKeyLength == CIFS_CRYPTO_KEY_SIZE) {
365 memcpy(server->cryptKey, pSMBr->u.EncryptionKey,
366 CIFS_CRYPTO_KEY_SIZE);
367 } else if ((pSMBr->hdr.Flags2 & SMBFLG2_EXT_SEC)
368 && (pSMBr->EncryptionKeyLength == 0)) {
369 /* decode security blob */
370 } else
371 rc = -EIO;
372
373 /* BB might be helpful to save off the domain of server here */
374
375 if ((pSMBr->hdr.Flags2 & SMBFLG2_EXT_SEC) &&
376 (server->capabilities & CAP_EXTENDED_SECURITY)) {
377 count = pSMBr->ByteCount;
378 if (count < 16)
379 rc = -EIO;
380 else if (count == 16) {
381 server->secType = RawNTLMSSP;
382 if (server->socketUseCount.counter > 1) {
383 if (memcmp
384 (server->server_GUID,
385 pSMBr->u.extended_response.
386 GUID, 16) != 0) {
387 cFYI(1,
09d1db5c 388 ("UID of server does not match previous connection to same ip address"));
1da177e4
LT		 389 memcpy(server->
390 server_GUID,
391 pSMBr->u.
392 extended_response.
393 GUID, 16);
394 }
395 } else
396 memcpy(server->server_GUID,
397 pSMBr->u.extended_response.
398 GUID, 16);
399 } else {
400 rc = decode_negTokenInit(pSMBr->u.
401 extended_response.
402 SecurityBlob,
403 count - 16,
404 &server->secType);
405 if(rc == 1) {
406 /* BB Need to fill struct for sessetup here */
407 rc = -EOPNOTSUPP;
408 } else {
409 rc = -EINVAL;
410 }
411 }
412 } else
413 server->capabilities &= ~CAP_EXTENDED_SECURITY;
414 if(sign_CIFS_PDUs == FALSE) {
415 if(server->secMode & SECMODE_SIGN_REQUIRED)
416 cERROR(1,
417 ("Server requires /proc/fs/cifs/PacketSigningEnabled"));
418 server->secMode &= ~(SECMODE_SIGN_ENABLED | SECMODE_SIGN_REQUIRED);
419 } else if(sign_CIFS_PDUs == 1) {
420 if((server->secMode & SECMODE_SIGN_REQUIRED) == 0)
421 server->secMode &= ~(SECMODE_SIGN_ENABLED | SECMODE_SIGN_REQUIRED);
422 }
423
424 }
425 if (pSMB)
426 cifs_buf_release(pSMB);
427 return rc;
428}
429
430int
431CIFSSMBTDis(const int xid, struct cifsTconInfo *tcon)
432{
433 struct smb_hdr *smb_buffer;
434 struct smb_hdr *smb_buffer_response; /* BB removeme BB */
435 int rc = 0;
436 int length;
437
438 cFYI(1, ("In tree disconnect"));
439 /*
440 * If last user of the connection and
441 * connection alive - disconnect it
442 * If this is the last connection on the server session disconnect it
443 * (and inside session disconnect we should check if tcp socket needs
444 * to be freed and kernel thread woken up).
445 */
446 if (tcon)
447 down(&tcon->tconSem);
448 else
449 return -EIO;
450
451 atomic_dec(&tcon->useCount);
452 if (atomic_read(&tcon->useCount) > 0) {
453 up(&tcon->tconSem);
454 return -EBUSY;
455 }
456
457 /* No need to return error on this operation if tid invalidated and
458 closed on server already e.g. due to tcp session crashing */
459 if(tcon->tidStatus == CifsNeedReconnect) {
460 up(&tcon->tconSem);
461 return 0;
462 }
463
464 if((tcon->ses == NULL) || (tcon->ses->server == NULL)) {
465 up(&tcon->tconSem);
466 return -EIO;
467 }
09d1db5c
SF		 468 rc = small_smb_init(SMB_COM_TREE_DISCONNECT, 0, tcon,
469 (void **)&smb_buffer);
1da177e4
LT		 470 if (rc) {
471 up(&tcon->tconSem);
472 return rc;
473 } else {
474 smb_buffer_response = smb_buffer; /* BB removeme BB */
cd63499c 475 }
1da177e4
LT		 476 rc = SendReceive(xid, tcon->ses, smb_buffer, smb_buffer_response,
477 &length, 0);
478 if (rc)
966ca923 479 cFYI(1, ("Tree disconnect failed %d", rc));
1da177e4
LT		 480
481 if (smb_buffer)
482 cifs_small_buf_release(smb_buffer);
483 up(&tcon->tconSem);
484
485 /* No need to return error on this operation if tid invalidated and
486 closed on server already e.g. due to tcp session crashing */
487 if (rc == -EAGAIN)
488 rc = 0;
489
490 return rc;
491}
492
493int
494CIFSSMBLogoff(const int xid, struct cifsSesInfo *ses)
495{
496 struct smb_hdr *smb_buffer_response;
497 LOGOFF_ANDX_REQ *pSMB;
498 int rc = 0;
499 int length;
500
501 cFYI(1, ("In SMBLogoff for session disconnect"));
502 if (ses)
503 down(&ses->sesSem);
504 else
505 return -EIO;
506
507 atomic_dec(&ses->inUse);
508 if (atomic_read(&ses->inUse) > 0) {
509 up(&ses->sesSem);
510 return -EBUSY;
511 }
512 rc = small_smb_init(SMB_COM_LOGOFF_ANDX, 2, NULL, (void **)&pSMB);
513 if (rc) {
514 up(&ses->sesSem);
515 return rc;
516 }
517
518 smb_buffer_response = (struct smb_hdr *)pSMB; /* BB removeme BB */
519
520 if(ses->server) {
521 if(ses->server->secMode &
522 (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED))
523 pSMB->hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE;
524 }
525
526 pSMB->hdr.Uid = ses->Suid;
527
528 pSMB->AndXCommand = 0xFF;
529 rc = SendReceive(xid, ses, (struct smb_hdr *) pSMB,
530 smb_buffer_response, &length, 0);
531 if (ses->server) {
532 atomic_dec(&ses->server->socketUseCount);
533 if (atomic_read(&ses->server->socketUseCount) == 0) {
534 spin_lock(&GlobalMid_Lock);
535 ses->server->tcpStatus = CifsExiting;
536 spin_unlock(&GlobalMid_Lock);
537 rc = -ESHUTDOWN;
538 }
539 }
540 if (pSMB)
541 cifs_small_buf_release(pSMB);
542 up(&ses->sesSem);
543
544 /* if session dead then we do not need to do ulogoff,
545 since server closed smb session, no sense reporting
546 error */
547 if (rc == -EAGAIN)
548 rc = 0;
549 return rc;
550}
551
552int
737b758c
SF		 553CIFSSMBDelFile(const int xid, struct cifsTconInfo *tcon, const char *fileName,
554 const struct nls_table *nls_codepage, int remap)
1da177e4
LT		 555{
556 DELETE_FILE_REQ *pSMB = NULL;
557 DELETE_FILE_RSP *pSMBr = NULL;
558 int rc = 0;
559 int bytes_returned;
560 int name_len;
561
562DelFileRetry:
563 rc = smb_init(SMB_COM_DELETE, 1, tcon, (void **) &pSMB,
564 (void **) &pSMBr);
565 if (rc)
566 return rc;
567
568 if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
569 name_len =
b1a45695 570 cifsConvertToUCS((__le16 *) pSMB->fileName, fileName,
737b758c 571 PATH_MAX, nls_codepage, remap);
1da177e4
LT		 572 name_len++; /* trailing null */
573 name_len *= 2;
09d1db5c 574 } else { /* BB improve check for buffer overruns BB */
1da177e4
LT		 575 name_len = strnlen(fileName, PATH_MAX);
576 name_len++; /* trailing null */
577 strncpy(pSMB->fileName, fileName, name_len);
578 }
579 pSMB->SearchAttributes =
580 cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM);
581 pSMB->BufferFormat = 0x04;
582 pSMB->hdr.smb_buf_length += name_len + 1;
583 pSMB->ByteCount = cpu_to_le16(name_len + 1);
584 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
585 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
586 if (rc) {
587 cFYI(1, ("Error in RMFile = %d", rc));
588 }
589#ifdef CONFIG_CIFS_STATS
590 else {
591 atomic_inc(&tcon->num_deletes);
592 }
593#endif
594
595 cifs_buf_release(pSMB);
596 if (rc == -EAGAIN)
597 goto DelFileRetry;
598
599 return rc;
600}
601
602int
737b758c
SF		 603CIFSSMBRmDir(const int xid, struct cifsTconInfo *tcon, const char *dirName,
604 const struct nls_table *nls_codepage, int remap)
1da177e4
LT		 605{
606 DELETE_DIRECTORY_REQ *pSMB = NULL;
607 DELETE_DIRECTORY_RSP *pSMBr = NULL;
608 int rc = 0;
609 int bytes_returned;
610 int name_len;
611
612 cFYI(1, ("In CIFSSMBRmDir"));
613RmDirRetry:
614 rc = smb_init(SMB_COM_DELETE_DIRECTORY, 0, tcon, (void **) &pSMB,
615 (void **) &pSMBr);
616 if (rc)
617 return rc;
618
619 if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
737b758c
SF		 620 name_len = cifsConvertToUCS((__le16 *) pSMB->DirName, dirName,
621 PATH_MAX, nls_codepage, remap);
1da177e4
LT		 622 name_len++; /* trailing null */
623 name_len *= 2;
09d1db5c 624 } else { /* BB improve check for buffer overruns BB */
1da177e4
LT		 625 name_len = strnlen(dirName, PATH_MAX);
626 name_len++; /* trailing null */
627 strncpy(pSMB->DirName, dirName, name_len);
628 }
629
630 pSMB->BufferFormat = 0x04;
631 pSMB->hdr.smb_buf_length += name_len + 1;
632 pSMB->ByteCount = cpu_to_le16(name_len + 1);
633 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
634 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
635 if (rc) {
636 cFYI(1, ("Error in RMDir = %d", rc));
637 }
638#ifdef CONFIG_CIFS_STATS
639 else {
640 atomic_inc(&tcon->num_rmdirs);
641 }
642#endif
643
644 cifs_buf_release(pSMB);
645 if (rc == -EAGAIN)
646 goto RmDirRetry;
647 return rc;
648}
649
650int
651CIFSSMBMkDir(const int xid, struct cifsTconInfo *tcon,
737b758c 652 const char *name, const struct nls_table *nls_codepage, int remap)
1da177e4
LT		 653{
654 int rc = 0;
655 CREATE_DIRECTORY_REQ *pSMB = NULL;
656 CREATE_DIRECTORY_RSP *pSMBr = NULL;
657 int bytes_returned;
658 int name_len;
659
660 cFYI(1, ("In CIFSSMBMkDir"));
661MkDirRetry:
662 rc = smb_init(SMB_COM_CREATE_DIRECTORY, 0, tcon, (void **) &pSMB,
663 (void **) &pSMBr);
664 if (rc)
665 return rc;
666
667 if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
b1a45695 668 name_len = cifsConvertToUCS((__le16 *) pSMB->DirName, name,
737b758c 669 PATH_MAX, nls_codepage, remap);
1da177e4
LT		 670 name_len++; /* trailing null */
671 name_len *= 2;
09d1db5c 672 } else { /* BB improve check for buffer overruns BB */
1da177e4
LT		 673 name_len = strnlen(name, PATH_MAX);
674 name_len++; /* trailing null */
675 strncpy(pSMB->DirName, name, name_len);
676 }
677
678 pSMB->BufferFormat = 0x04;
679 pSMB->hdr.smb_buf_length += name_len + 1;
680 pSMB->ByteCount = cpu_to_le16(name_len + 1);
681 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
682 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
683 if (rc) {
684 cFYI(1, ("Error in Mkdir = %d", rc));
685 }
686#ifdef CONFIG_CIFS_STATS
687 else {
688 atomic_inc(&tcon->num_mkdirs);
689 }
690#endif
691 cifs_buf_release(pSMB);
692 if (rc == -EAGAIN)
693 goto MkDirRetry;
694 return rc;
695}
696
697int
698CIFSSMBOpen(const int xid, struct cifsTconInfo *tcon,
699 const char *fileName, const int openDisposition,
700 const int access_flags, const int create_options, __u16 * netfid,
701 int *pOplock, FILE_ALL_INFO * pfile_info,
737b758c 702 const struct nls_table *nls_codepage, int remap)
1da177e4
LT		 703{
704 int rc = -EACCES;
705 OPEN_REQ *pSMB = NULL;
706 OPEN_RSP *pSMBr = NULL;
707 int bytes_returned;
708 int name_len;
709 __u16 count;
710
711openRetry:
712 rc = smb_init(SMB_COM_NT_CREATE_ANDX, 24, tcon, (void **) &pSMB,
713 (void **) &pSMBr);
714 if (rc)
715 return rc;
716
717 pSMB->AndXCommand = 0xFF; /* none */
718
719 if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
720 count = 1; /* account for one byte pad to word boundary */
721 name_len =
b1a45695 722 cifsConvertToUCS((__le16 *) (pSMB->fileName + 1),
737b758c 723 fileName, PATH_MAX, nls_codepage, remap);
1da177e4
LT		 724 name_len++; /* trailing null */
725 name_len *= 2;
726 pSMB->NameLength = cpu_to_le16(name_len);
09d1db5c 727 } else { /* BB improve check for buffer overruns BB */
1da177e4
LT		 728 count = 0; /* no pad */
729 name_len = strnlen(fileName, PATH_MAX);
730 name_len++; /* trailing null */
731 pSMB->NameLength = cpu_to_le16(name_len);
732 strncpy(pSMB->fileName, fileName, name_len);
733 }
734 if (*pOplock & REQ_OPLOCK)
735 pSMB->OpenFlags = cpu_to_le32(REQ_OPLOCK);
736 else if (*pOplock & REQ_BATCHOPLOCK) {
737 pSMB->OpenFlags = cpu_to_le32(REQ_BATCHOPLOCK);
738 }
739 pSMB->DesiredAccess = cpu_to_le32(access_flags);
740 pSMB->AllocationSize = 0;
741 pSMB->FileAttributes = cpu_to_le32(ATTR_NORMAL);
742 /* XP does not handle ATTR_POSIX_SEMANTICS */
743 /* but it helps speed up case sensitive checks for other
744 servers such as Samba */
745 if (tcon->ses->capabilities & CAP_UNIX)
746 pSMB->FileAttributes |= cpu_to_le32(ATTR_POSIX_SEMANTICS);
747
748 /* if ((omode & S_IWUGO) == 0)
749 pSMB->FileAttributes |= cpu_to_le32(ATTR_READONLY);*/
750 /* Above line causes problems due to vfs splitting create into two
751 pieces - need to set mode after file created not while it is
752 being created */
753 pSMB->ShareAccess = cpu_to_le32(FILE_SHARE_ALL);
754 pSMB->CreateDisposition = cpu_to_le32(openDisposition);
755 pSMB->CreateOptions = cpu_to_le32(create_options);
09d1db5c
SF		 756 /* BB Expirement with various impersonation levels and verify */
757 pSMB->ImpersonationLevel = cpu_to_le32(SECURITY_IMPERSONATION);
1da177e4
LT		 758 pSMB->SecurityFlags =
759 SECURITY_CONTEXT_TRACKING | SECURITY_EFFECTIVE_ONLY;
760
761 count += name_len;
762 pSMB->hdr.smb_buf_length += count;
763
764 pSMB->ByteCount = cpu_to_le16(count);
765 /* long_op set to 1 to allow for oplock break timeouts */
766 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
767 (struct smb_hdr *) pSMBr, &bytes_returned, 1);
768 if (rc) {
769 cFYI(1, ("Error in Open = %d", rc));
770 } else {
09d1db5c 771 *pOplock = pSMBr->OplockLevel; /* 1 byte no need to le_to_cpu */
1da177e4
LT		 772 *netfid = pSMBr->Fid; /* cifs fid stays in le */
773 /* Let caller know file was created so we can set the mode. */
774 /* Do we care about the CreateAction in any other cases? */
775 if(cpu_to_le32(FILE_CREATE) == pSMBr->CreateAction)
776 *pOplock |= CIFS_CREATE_ACTION;
777 if(pfile_info) {
778 memcpy((char *)pfile_info,(char *)&pSMBr->CreationTime,
779 36 /* CreationTime to Attributes */);
780 /* the file_info buf is endian converted by caller */
781 pfile_info->AllocationSize = pSMBr->AllocationSize;
782 pfile_info->EndOfFile = pSMBr->EndOfFile;
783 pfile_info->NumberOfLinks = cpu_to_le32(1);
784 }
785
786#ifdef CONFIG_CIFS_STATS
787 atomic_inc(&tcon->num_opens);
788#endif
789 }
790 cifs_buf_release(pSMB);
791 if (rc == -EAGAIN)
792 goto openRetry;
793 return rc;
794}
795
796/* If no buffer passed in, then caller wants to do the copy
797 as in the case of readpages so the SMB buffer must be
798 freed by the caller */
799
800int
801CIFSSMBRead(const int xid, struct cifsTconInfo *tcon,
802 const int netfid, const unsigned int count,
803 const __u64 lseek, unsigned int *nbytes, char **buf)
804{
805 int rc = -EACCES;
806 READ_REQ *pSMB = NULL;
807 READ_RSP *pSMBr = NULL;
808 char *pReadData = NULL;
809 int bytes_returned;
810
811 cFYI(1,("Reading %d bytes on fid %d",count,netfid));
812
813 *nbytes = 0;
814 rc = smb_init(SMB_COM_READ_ANDX, 12, tcon, (void **) &pSMB,
815 (void **) &pSMBr);
816 if (rc)
817 return rc;
818
819 /* tcon and ses pointer are checked in smb_init */
820 if (tcon->ses->server == NULL)
821 return -ECONNABORTED;
822
823 pSMB->AndXCommand = 0xFF; /* none */
824 pSMB->Fid = netfid;
825 pSMB->OffsetLow = cpu_to_le32(lseek & 0xFFFFFFFF);
826 pSMB->OffsetHigh = cpu_to_le32(lseek >> 32);
827 pSMB->Remaining = 0;
828 pSMB->MaxCount = cpu_to_le16(count & 0xFFFF);
829 pSMB->MaxCountHigh = cpu_to_le32(count >> 16);
830 pSMB->ByteCount = 0; /* no need to do le conversion since it is 0 */
831
832 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
833 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
834 if (rc) {
835 cERROR(1, ("Send error in read = %d", rc));
836 } else {
837 int data_length = le16_to_cpu(pSMBr->DataLengthHigh);
838 data_length = data_length << 16;
839 data_length += le16_to_cpu(pSMBr->DataLength);
840 *nbytes = data_length;
841
842 /*check that DataLength would not go beyond end of SMB */
843 if ((data_length > CIFSMaxBufSize)
844 || (data_length > count)) {
845 cFYI(1,("bad length %d for count %d",data_length,count));
846 rc = -EIO;
847 *nbytes = 0;
848 } else {
849 pReadData =
850 (char *) (&pSMBr->hdr.Protocol) +
851 le16_to_cpu(pSMBr->DataOffset);
852/* if(rc = copy_to_user(buf, pReadData, data_length)) {
853 cERROR(1,("Faulting on read rc = %d",rc));
854 rc = -EFAULT;
855 }*/ /* can not use copy_to_user when using page cache*/
856 if(*buf)
857 memcpy(*buf,pReadData,data_length);
858 }
859 }
860 if(*buf)
861 cifs_buf_release(pSMB);
862 else
863 *buf = (char *)pSMB;
864
865 /* Note: On -EAGAIN error only caller can retry on handle based calls
866 since file handle passed in no longer valid */
867 return rc;
868}
869
870int
871CIFSSMBWrite(const int xid, struct cifsTconInfo *tcon,
872 const int netfid, const unsigned int count,
873 const __u64 offset, unsigned int *nbytes, const char *buf,
874 const char __user * ubuf, const int long_op)
875{
876 int rc = -EACCES;
877 WRITE_REQ *pSMB = NULL;
878 WRITE_RSP *pSMBr = NULL;
879 int bytes_returned;
880 __u32 bytes_sent;
881 __u16 byte_count;
882
883 /* cFYI(1,("write at %lld %d bytes",offset,count));*/
884 rc = smb_init(SMB_COM_WRITE_ANDX, 14, tcon, (void **) &pSMB,
885 (void **) &pSMBr);
886 if (rc)
887 return rc;
888 /* tcon and ses pointer are checked in smb_init */
889 if (tcon->ses->server == NULL)
890 return -ECONNABORTED;
891
892 pSMB->AndXCommand = 0xFF; /* none */
893 pSMB->Fid = netfid;
894 pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF);
895 pSMB->OffsetHigh = cpu_to_le32(offset >> 32);
896 pSMB->Reserved = 0xFFFFFFFF;
897 pSMB->WriteMode = 0;
898 pSMB->Remaining = 0;
899
900 /* Can increase buffer size if buffer is big enough in some cases - ie we
901 can send more if LARGE_WRITE_X capability returned by the server and if
902 our buffer is big enough or if we convert to iovecs on socket writes
903 and eliminate the copy to the CIFS buffer */
904 if(tcon->ses->capabilities & CAP_LARGE_WRITE_X) {
905 bytes_sent = min_t(const unsigned int, CIFSMaxBufSize, count);
906 } else {
907 bytes_sent = (tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE)
908 & ~0xFF;
909 }
910
911 if (bytes_sent > count)
912 bytes_sent = count;
913 pSMB->DataOffset =
914 cpu_to_le16(offsetof(struct smb_com_write_req,Data) - 4);
915 if(buf)
916 memcpy(pSMB->Data,buf,bytes_sent);
917 else if(ubuf) {
918 if(copy_from_user(pSMB->Data,ubuf,bytes_sent)) {
919 cifs_buf_release(pSMB);
920 return -EFAULT;
921 }
922 } else {
923 /* No buffer */
924 cifs_buf_release(pSMB);
925 return -EINVAL;
926 }
927
928 byte_count = bytes_sent + 1 /* pad */ ; /* BB fix this for sends > 64K */
929 pSMB->DataLengthLow = cpu_to_le16(bytes_sent & 0xFFFF);
930 pSMB->DataLengthHigh = cpu_to_le16(bytes_sent >> 16);
931 pSMB->hdr.smb_buf_length += bytes_sent+1;
932 pSMB->ByteCount = cpu_to_le16(byte_count);
933
934 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
935 (struct smb_hdr *) pSMBr, &bytes_returned, long_op);
936 if (rc) {
937 cFYI(1, ("Send error in write = %d", rc));
938 *nbytes = 0;
939 } else {
940 *nbytes = le16_to_cpu(pSMBr->CountHigh);
941 *nbytes = (*nbytes) << 16;
942 *nbytes += le16_to_cpu(pSMBr->Count);
943 }
944
945 cifs_buf_release(pSMB);
946
947 /* Note: On -EAGAIN error only caller can retry on handle based calls
948 since file handle passed in no longer valid */
949
950 return rc;
951}
952
953#ifdef CONFIG_CIFS_EXPERIMENTAL
954int CIFSSMBWrite2(const int xid, struct cifsTconInfo *tcon,
955 const int netfid, const unsigned int count,
956 const __u64 offset, unsigned int *nbytes, const char __user *buf,
957 const int long_op)
958{
959 int rc = -EACCES;
960 WRITE_REQ *pSMB = NULL;
961 WRITE_RSP *pSMBr = NULL;
962 /*int bytes_returned;*/
963 unsigned bytes_sent;
964 __u16 byte_count;
965
966 rc = small_smb_init(SMB_COM_WRITE_ANDX, 14, tcon, (void **) &pSMB);
967
968 if (rc)
969 return rc;
970
971 pSMBr = (WRITE_RSP *)pSMB; /* BB removeme BB */
972
973 /* tcon and ses pointer are checked in smb_init */
974 if (tcon->ses->server == NULL)
975 return -ECONNABORTED;
976
977 pSMB->AndXCommand = 0xFF; /* none */
978 pSMB->Fid = netfid;
979 pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF);
980 pSMB->OffsetHigh = cpu_to_le32(offset >> 32);
981 pSMB->Reserved = 0xFFFFFFFF;
982 pSMB->WriteMode = 0;
983 pSMB->Remaining = 0;
984 bytes_sent = (tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE) & ~0xFF;
985 if (bytes_sent > count)
986 bytes_sent = count;
987 pSMB->DataLengthHigh = 0;
988 pSMB->DataOffset =
989 cpu_to_le16(offsetof(struct smb_com_write_req,Data) - 4);
990
991 byte_count = bytes_sent + 1 /* pad */ ;
992 pSMB->DataLengthLow = cpu_to_le16(bytes_sent);
993 pSMB->DataLengthHigh = 0;
994 pSMB->hdr.smb_buf_length += byte_count;
995 pSMB->ByteCount = cpu_to_le16(byte_count);
996
997/* rc = SendReceive2(xid, tcon->ses, (struct smb_hdr *) pSMB,
998 (struct smb_hdr *) pSMBr, buf, buflen, &bytes_returned, long_op); */ /* BB fixme BB */
999 if (rc) {
1000 cFYI(1, ("Send error in write2 (large write) = %d", rc));
1001 *nbytes = 0;
1002 } else
1003 *nbytes = le16_to_cpu(pSMBr->Count);
1004
1005 cifs_small_buf_release(pSMB);
1006
1007 /* Note: On -EAGAIN error only caller can retry on handle based calls
1008 since file handle passed in no longer valid */
1009
1010 return rc;
1011}
1012#endif /* CIFS_EXPERIMENTAL */
1013
1014int
1015CIFSSMBLock(const int xid, struct cifsTconInfo *tcon,
1016 const __u16 smb_file_id, const __u64 len,
1017 const __u64 offset, const __u32 numUnlock,
1018 const __u32 numLock, const __u8 lockType, const int waitFlag)
1019{
1020 int rc = 0;
1021 LOCK_REQ *pSMB = NULL;
1022 LOCK_RSP *pSMBr = NULL;
1023 int bytes_returned;
1024 int timeout = 0;
1025 __u16 count;
1026
1027 cFYI(1, ("In CIFSSMBLock - timeout %d numLock %d",waitFlag,numLock));
46810cbf
SF		 1028 rc = small_smb_init(SMB_COM_LOCKING_ANDX, 8, tcon, (void **) &pSMB);
1029
1da177e4
LT		 1030 if (rc)
1031 return rc;
1032
46810cbf
SF		 1033 pSMBr = (LOCK_RSP *)pSMB; /* BB removeme BB */
1034
1da177e4
LT		 1035 if(lockType == LOCKING_ANDX_OPLOCK_RELEASE) {
1036 timeout = -1; /* no response expected */
1037 pSMB->Timeout = 0;
1038 } else if (waitFlag == TRUE) {
1039 timeout = 3; /* blocking operation, no timeout */
1040 pSMB->Timeout = cpu_to_le32(-1);/* blocking - do not time out */
1041 } else {
1042 pSMB->Timeout = 0;
1043 }
1044
1045 pSMB->NumberOfLocks = cpu_to_le16(numLock);
1046 pSMB->NumberOfUnlocks = cpu_to_le16(numUnlock);
1047 pSMB->LockType = lockType;
1048 pSMB->AndXCommand = 0xFF; /* none */
1049 pSMB->Fid = smb_file_id; /* netfid stays le */
1050
1051 if((numLock != 0) || (numUnlock != 0)) {
1052 pSMB->Locks[0].Pid = cpu_to_le16(current->tgid);
1053 /* BB where to store pid high? */
1054 pSMB->Locks[0].LengthLow = cpu_to_le32((u32)len);
1055 pSMB->Locks[0].LengthHigh = cpu_to_le32((u32)(len>>32));
1056 pSMB->Locks[0].OffsetLow = cpu_to_le32((u32)offset);
1057 pSMB->Locks[0].OffsetHigh = cpu_to_le32((u32)(offset>>32));
1058 count = sizeof(LOCKING_ANDX_RANGE);
1059 } else {
1060 /* oplock break */
1061 count = 0;
1062 }
1063 pSMB->hdr.smb_buf_length += count;
1064 pSMB->ByteCount = cpu_to_le16(count);
1065
1066 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
1067 (struct smb_hdr *) pSMBr, &bytes_returned, timeout);
1068
1069 if (rc) {
1070 cFYI(1, ("Send error in Lock = %d", rc));
1071 }
46810cbf 1072 cifs_small_buf_release(pSMB);
1da177e4
LT		 1073
1074 /* Note: On -EAGAIN error only caller can retry on handle based calls
1075 since file handle passed in no longer valid */
1076 return rc;
1077}
1078
1079int
1080CIFSSMBClose(const int xid, struct cifsTconInfo *tcon, int smb_file_id)
1081{
1082 int rc = 0;
1083 CLOSE_REQ *pSMB = NULL;
1084 CLOSE_RSP *pSMBr = NULL;
1085 int bytes_returned;
1086 cFYI(1, ("In CIFSSMBClose"));
1087
1088/* do not retry on dead session on close */
1089 rc = small_smb_init(SMB_COM_CLOSE, 3, tcon, (void **) &pSMB);
1090 if(rc == -EAGAIN)
1091 return 0;
1092 if (rc)
1093 return rc;
1094
1095 pSMBr = (CLOSE_RSP *)pSMB; /* BB removeme BB */
1096
1097 pSMB->FileID = (__u16) smb_file_id;
1098 pSMB->LastWriteTime = 0;
1099 pSMB->ByteCount = 0;
1100 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
1101 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
1102 if (rc) {
1103 if(rc!=-EINTR) {
1104 /* EINTR is expected when user ctl-c to kill app */
1105 cERROR(1, ("Send error in Close = %d", rc));
1106 }
1107 }
1108
1109 cifs_small_buf_release(pSMB);
1110
1111 /* Since session is dead, file will be closed on server already */
1112 if(rc == -EAGAIN)
1113 rc = 0;
1114
1115 return rc;
1116}
1117
1118int
1119CIFSSMBRename(const int xid, struct cifsTconInfo *tcon,
1120 const char *fromName, const char *toName,
737b758c 1121 const struct nls_table *nls_codepage, int remap)
1da177e4
LT		 1122{
1123 int rc = 0;
1124 RENAME_REQ *pSMB = NULL;
1125 RENAME_RSP *pSMBr = NULL;
1126 int bytes_returned;
1127 int name_len, name_len2;
1128 __u16 count;
1129
1130 cFYI(1, ("In CIFSSMBRename"));
1131renameRetry:
1132 rc = smb_init(SMB_COM_RENAME, 1, tcon, (void **) &pSMB,
1133 (void **) &pSMBr);
1134 if (rc)
1135 return rc;
1136
1137 pSMB->BufferFormat = 0x04;
1138 pSMB->SearchAttributes =
1139 cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM |
1140 ATTR_DIRECTORY);
1141
1142 if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
1143 name_len =
b1a45695 1144 cifsConvertToUCS((__le16 *) pSMB->OldFileName, fromName,
737b758c 1145 PATH_MAX, nls_codepage, remap);
1da177e4
LT		 1146 name_len++; /* trailing null */
1147 name_len *= 2;
1148 pSMB->OldFileName[name_len] = 0x04; /* pad */
1149 /* protocol requires ASCII signature byte on Unicode string */
1150 pSMB->OldFileName[name_len + 1] = 0x00;
1151 name_len2 =
b1a45695 1152 cifsConvertToUCS((__le16 *) &pSMB->OldFileName[name_len + 2],
737b758c 1153 toName, PATH_MAX, nls_codepage, remap);
1da177e4
LT		 1154 name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ;
1155 name_len2 *= 2; /* convert to bytes */
1156 } else { /* BB improve the check for buffer overruns BB */
1157 name_len = strnlen(fromName, PATH_MAX);
1158 name_len++; /* trailing null */
1159 strncpy(pSMB->OldFileName, fromName, name_len);
1160 name_len2 = strnlen(toName, PATH_MAX);
1161 name_len2++; /* trailing null */
1162 pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */
1163 strncpy(&pSMB->OldFileName[name_len + 1], toName, name_len2);
1164 name_len2++; /* trailing null */
1165 name_len2++; /* signature byte */
1166 }
1167
1168 count = 1 /* 1st signature byte */ + name_len + name_len2;
1169 pSMB->hdr.smb_buf_length += count;
1170 pSMB->ByteCount = cpu_to_le16(count);
1171
1172 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
1173 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
1174 if (rc) {
1175 cFYI(1, ("Send error in rename = %d", rc));
1176 }
1177
1178#ifdef CONFIG_CIFS_STATS
1179 else {
1180 atomic_inc(&tcon->num_renames);
1181 }
1182#endif
1183
1184 cifs_buf_release(pSMB);
1185
1186 if (rc == -EAGAIN)
1187 goto renameRetry;
1188
1189 return rc;
1190}
1191
1192int CIFSSMBRenameOpenFile(const int xid,struct cifsTconInfo *pTcon,
737b758c
SF		 1193 int netfid, char * target_name,
1194 const struct nls_table * nls_codepage, int remap)
1da177e4
LT		 1195{
1196 struct smb_com_transaction2_sfi_req *pSMB = NULL;
1197 struct smb_com_transaction2_sfi_rsp *pSMBr = NULL;
1198 struct set_file_rename * rename_info;
1199 char *data_offset;
1200 char dummy_string[30];
1201 int rc = 0;
1202 int bytes_returned = 0;
1203 int len_of_str;
1204 __u16 params, param_offset, offset, count, byte_count;
1205
1206 cFYI(1, ("Rename to File by handle"));
1207 rc = smb_init(SMB_COM_TRANSACTION2, 15, pTcon, (void **) &pSMB,
1208 (void **) &pSMBr);
1209 if (rc)
1210 return rc;
1211
1212 params = 6;
1213 pSMB->MaxSetupCount = 0;
1214 pSMB->Reserved = 0;
1215 pSMB->Flags = 0;
1216 pSMB->Timeout = 0;
1217 pSMB->Reserved2 = 0;
1218 param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4;
1219 offset = param_offset + params;
1220
1221 data_offset = (char *) (&pSMB->hdr.Protocol) + offset;
1222 rename_info = (struct set_file_rename *) data_offset;
1223 pSMB->MaxParameterCount = cpu_to_le16(2);
1224 pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB PDU from sess */
1225 pSMB->SetupCount = 1;
1226 pSMB->Reserved3 = 0;
1227 pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION);
1228 byte_count = 3 /* pad */ + params;
1229 pSMB->ParameterCount = cpu_to_le16(params);
1230 pSMB->TotalParameterCount = pSMB->ParameterCount;
1231 pSMB->ParameterOffset = cpu_to_le16(param_offset);
1232 pSMB->DataOffset = cpu_to_le16(offset);
1233 /* construct random name ".cifs_tmp<inodenum><mid>" */
1234 rename_info->overwrite = cpu_to_le32(1);
1235 rename_info->root_fid = 0;
1236 /* unicode only call */
1237 if(target_name == NULL) {
1238 sprintf(dummy_string,"cifs%x",pSMB->hdr.Mid);
b1a45695 1239 len_of_str = cifsConvertToUCS((__le16 *)rename_info->target_name,
737b758c 1240 dummy_string, 24, nls_codepage, remap);
1da177e4 1241 } else {
b1a45695 1242 len_of_str = cifsConvertToUCS((__le16 *)rename_info->target_name,
737b758c 1243 target_name, PATH_MAX, nls_codepage, remap);
1da177e4
LT		 1244 }
1245 rename_info->target_name_len = cpu_to_le32(2 * len_of_str);
1246 count = 12 /* sizeof(struct set_file_rename) */ + (2 * len_of_str) + 2;
1247 byte_count += count;
1248 pSMB->DataCount = cpu_to_le16(count);
1249 pSMB->TotalDataCount = pSMB->DataCount;
1250 pSMB->Fid = netfid;
1251 pSMB->InformationLevel =
1252 cpu_to_le16(SMB_SET_FILE_RENAME_INFORMATION);
1253 pSMB->Reserved4 = 0;
1254 pSMB->hdr.smb_buf_length += byte_count;
1255 pSMB->ByteCount = cpu_to_le16(byte_count);
1256 rc = SendReceive(xid, pTcon->ses, (struct smb_hdr *) pSMB,
1257 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
1258 if (rc) {
1259 cFYI(1,("Send error in Rename (by file handle) = %d", rc));
1260 }
1261#ifdef CONFIG_CIFS_STATS
1262 else {
1263 atomic_inc(&pTcon->num_t2renames);
1264 }
1265#endif
1266 cifs_buf_release(pSMB);
1267
1268 /* Note: On -EAGAIN error only caller can retry on handle based calls
1269 since file handle passed in no longer valid */
1270
1271 return rc;
1272}
1273
1274int
1275CIFSSMBCopy(const int xid, struct cifsTconInfo *tcon, const char * fromName,
1276 const __u16 target_tid, const char *toName, const int flags,
737b758c 1277 const struct nls_table *nls_codepage, int remap)
1da177e4
LT		 1278{
1279 int rc = 0;
1280 COPY_REQ *pSMB = NULL;
1281 COPY_RSP *pSMBr = NULL;
1282 int bytes_returned;
1283 int name_len, name_len2;
1284 __u16 count;
1285
1286 cFYI(1, ("In CIFSSMBCopy"));
1287copyRetry:
1288 rc = smb_init(SMB_COM_COPY, 1, tcon, (void **) &pSMB,
1289 (void **) &pSMBr);
1290 if (rc)
1291 return rc;
1292
1293 pSMB->BufferFormat = 0x04;
1294 pSMB->Tid2 = target_tid;
1295
1296 pSMB->Flags = cpu_to_le16(flags & COPY_TREE);
1297
1298 if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
b1a45695 1299 name_len = cifsConvertToUCS((__le16 *) pSMB->OldFileName,
737b758c
SF		 1300 fromName, PATH_MAX, nls_codepage,
1301 remap);
1da177e4
LT		 1302 name_len++; /* trailing null */
1303 name_len *= 2;
1304 pSMB->OldFileName[name_len] = 0x04; /* pad */
1305 /* protocol requires ASCII signature byte on Unicode string */
1306 pSMB->OldFileName[name_len + 1] = 0x00;
b1a45695 1307 name_len2 = cifsConvertToUCS((__le16 *)&pSMB->OldFileName[name_len + 2],
737b758c 1308 toName, PATH_MAX, nls_codepage, remap);
1da177e4
LT		 1309 name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ;
1310 name_len2 *= 2; /* convert to bytes */
1311 } else { /* BB improve the check for buffer overruns BB */
1312 name_len = strnlen(fromName, PATH_MAX);
1313 name_len++; /* trailing null */
1314 strncpy(pSMB->OldFileName, fromName, name_len);
1315 name_len2 = strnlen(toName, PATH_MAX);
1316 name_len2++; /* trailing null */
1317 pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */
1318 strncpy(&pSMB->OldFileName[name_len + 1], toName, name_len2);
1319 name_len2++; /* trailing null */
1320 name_len2++; /* signature byte */
1321 }
1322
1323 count = 1 /* 1st signature byte */ + name_len + name_len2;
1324 pSMB->hdr.smb_buf_length += count;
1325 pSMB->ByteCount = cpu_to_le16(count);
1326
1327 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
1328 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
1329 if (rc) {
1330 cFYI(1, ("Send error in copy = %d with %d files copied",
1331 rc, le16_to_cpu(pSMBr->CopyCount)));
1332 }
1333 if (pSMB)
1334 cifs_buf_release(pSMB);
1335
1336 if (rc == -EAGAIN)
1337 goto copyRetry;
1338
1339 return rc;
1340}
1341
1342int
1343CIFSUnixCreateSymLink(const int xid, struct cifsTconInfo *tcon,
1344 const char *fromName, const char *toName,
1345 const struct nls_table *nls_codepage)
1346{
1347 TRANSACTION2_SPI_REQ *pSMB = NULL;
1348 TRANSACTION2_SPI_RSP *pSMBr = NULL;
1349 char *data_offset;
1350 int name_len;
1351 int name_len_target;
1352 int rc = 0;
1353 int bytes_returned = 0;
1354 __u16 params, param_offset, offset, byte_count;
1355
1356 cFYI(1, ("In Symlink Unix style"));
1357createSymLinkRetry:
1358 rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
1359 (void **) &pSMBr);
1360 if (rc)
1361 return rc;
1362
1363 if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
1364 name_len =
1365 cifs_strtoUCS((wchar_t *) pSMB->FileName, fromName, PATH_MAX
1366 /* find define for this maxpathcomponent */
1367 , nls_codepage);
1368 name_len++; /* trailing null */
1369 name_len *= 2;
1370
1371 } else { /* BB improve the check for buffer overruns BB */
1372 name_len = strnlen(fromName, PATH_MAX);
1373 name_len++; /* trailing null */
1374 strncpy(pSMB->FileName, fromName, name_len);
1375 }
1376 params = 6 + name_len;
1377 pSMB->MaxSetupCount = 0;
1378 pSMB->Reserved = 0;
1379 pSMB->Flags = 0;
1380 pSMB->Timeout = 0;
1381 pSMB->Reserved2 = 0;
1382 param_offset = offsetof(struct smb_com_transaction2_spi_req,
1383 InformationLevel) - 4;
1384 offset = param_offset + params;
1385
1386 data_offset = (char *) (&pSMB->hdr.Protocol) + offset;
1387 if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
1388 name_len_target =
1389 cifs_strtoUCS((wchar_t *) data_offset, toName, PATH_MAX
1390 /* find define for this maxpathcomponent */
1391 , nls_codepage);
1392 name_len_target++; /* trailing null */
1393 name_len_target *= 2;
1394 } else { /* BB improve the check for buffer overruns BB */
1395 name_len_target = strnlen(toName, PATH_MAX);
1396 name_len_target++; /* trailing null */
1397 strncpy(data_offset, toName, name_len_target);
1398 }
1399
1400 pSMB->MaxParameterCount = cpu_to_le16(2);
1401 /* BB find exact max on data count below from sess */
1402 pSMB->MaxDataCount = cpu_to_le16(1000);
1403 pSMB->SetupCount = 1;
1404 pSMB->Reserved3 = 0;
1405 pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION);
1406 byte_count = 3 /* pad */ + params + name_len_target;
1407 pSMB->DataCount = cpu_to_le16(name_len_target);
1408 pSMB->ParameterCount = cpu_to_le16(params);
1409 pSMB->TotalDataCount = pSMB->DataCount;
1410 pSMB->TotalParameterCount = pSMB->ParameterCount;
1411 pSMB->ParameterOffset = cpu_to_le16(param_offset);
1412 pSMB->DataOffset = cpu_to_le16(offset);
1413 pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_LINK);
1414 pSMB->Reserved4 = 0;
1415 pSMB->hdr.smb_buf_length += byte_count;
1416 pSMB->ByteCount = cpu_to_le16(byte_count);
1417 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
1418 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
1419 if (rc) {
1420 cFYI(1,
1421 ("Send error in SetPathInfo (create symlink) = %d",
1422 rc));
1423 }
1424
1425 if (pSMB)
1426 cifs_buf_release(pSMB);
1427
1428 if (rc == -EAGAIN)
1429 goto createSymLinkRetry;
1430
1431 return rc;
1432}
1433
1434int
1435CIFSUnixCreateHardLink(const int xid, struct cifsTconInfo *tcon,
1436 const char *fromName, const char *toName,
737b758c 1437 const struct nls_table *nls_codepage, int remap)
1da177e4
LT		 1438{
1439 TRANSACTION2_SPI_REQ *pSMB = NULL;
1440 TRANSACTION2_SPI_RSP *pSMBr = NULL;
1441 char *data_offset;
1442 int name_len;
1443 int name_len_target;
1444 int rc = 0;
1445 int bytes_returned = 0;
1446 __u16 params, param_offset, offset, byte_count;
1447
1448 cFYI(1, ("In Create Hard link Unix style"));
1449createHardLinkRetry:
1450 rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
1451 (void **) &pSMBr);
1452 if (rc)
1453 return rc;
1454
1455 if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
b1a45695 1456 name_len = cifsConvertToUCS((__le16 *) pSMB->FileName, toName,
737b758c 1457 PATH_MAX, nls_codepage, remap);
1da177e4
LT		 1458 name_len++; /* trailing null */
1459 name_len *= 2;
1460
1461 } else { /* BB improve the check for buffer overruns BB */
1462 name_len = strnlen(toName, PATH_MAX);
1463 name_len++; /* trailing null */
1464 strncpy(pSMB->FileName, toName, name_len);
1465 }
1466 params = 6 + name_len;
1467 pSMB->MaxSetupCount = 0;
1468 pSMB->Reserved = 0;
1469 pSMB->Flags = 0;
1470 pSMB->Timeout = 0;
1471 pSMB->Reserved2 = 0;
1472 param_offset = offsetof(struct smb_com_transaction2_spi_req,
1473 InformationLevel) - 4;
1474 offset = param_offset + params;
1475
1476 data_offset = (char *) (&pSMB->hdr.Protocol) + offset;
1477 if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
1478 name_len_target =
b1a45695 1479 cifsConvertToUCS((__le16 *) data_offset, fromName, PATH_MAX,
737b758c 1480 nls_codepage, remap);
1da177e4
LT		 1481 name_len_target++; /* trailing null */
1482 name_len_target *= 2;
1483 } else { /* BB improve the check for buffer overruns BB */
1484 name_len_target = strnlen(fromName, PATH_MAX);
1485 name_len_target++; /* trailing null */
1486 strncpy(data_offset, fromName, name_len_target);
1487 }
1488
1489 pSMB->MaxParameterCount = cpu_to_le16(2);
1490 /* BB find exact max on data count below from sess*/
1491 pSMB->MaxDataCount = cpu_to_le16(1000);
1492 pSMB->SetupCount = 1;
1493 pSMB->Reserved3 = 0;
1494 pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION);
1495 byte_count = 3 /* pad */ + params + name_len_target;
1496 pSMB->ParameterCount = cpu_to_le16(params);
1497 pSMB->TotalParameterCount = pSMB->ParameterCount;
1498 pSMB->DataCount = cpu_to_le16(name_len_target);
1499 pSMB->TotalDataCount = pSMB->DataCount;
1500 pSMB->ParameterOffset = cpu_to_le16(param_offset);
1501 pSMB->DataOffset = cpu_to_le16(offset);
1502 pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_HLINK);
1503 pSMB->Reserved4 = 0;
1504 pSMB->hdr.smb_buf_length += byte_count;
1505 pSMB->ByteCount = cpu_to_le16(byte_count);
1506 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
1507 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
1508 if (rc) {
1509 cFYI(1, ("Send error in SetPathInfo (hard link) = %d", rc));
1510 }
1511
1512 cifs_buf_release(pSMB);
1513 if (rc == -EAGAIN)
1514 goto createHardLinkRetry;
1515
1516 return rc;
1517}
1518
1519int
1520CIFSCreateHardLink(const int xid, struct cifsTconInfo *tcon,
1521 const char *fromName, const char *toName,
737b758c 1522 const struct nls_table *nls_codepage, int remap)
1da177e4
LT		 1523{
1524 int rc = 0;
1525 NT_RENAME_REQ *pSMB = NULL;
1526 RENAME_RSP *pSMBr = NULL;
1527 int bytes_returned;
1528 int name_len, name_len2;
1529 __u16 count;
1530
1531 cFYI(1, ("In CIFSCreateHardLink"));
1532winCreateHardLinkRetry:
1533
1534 rc = smb_init(SMB_COM_NT_RENAME, 4, tcon, (void **) &pSMB,
1535 (void **) &pSMBr);
1536 if (rc)
1537 return rc;
1538
1539 pSMB->SearchAttributes =
1540 cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM |
1541 ATTR_DIRECTORY);
1542 pSMB->Flags = cpu_to_le16(CREATE_HARD_LINK);
1543 pSMB->ClusterCount = 0;
1544
1545 pSMB->BufferFormat = 0x04;
1546
1547 if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
1548 name_len =
b1a45695 1549 cifsConvertToUCS((__le16 *) pSMB->OldFileName, fromName,
737b758c 1550 PATH_MAX, nls_codepage, remap);
1da177e4
LT		 1551 name_len++; /* trailing null */
1552 name_len *= 2;
1553 pSMB->OldFileName[name_len] = 0; /* pad */
1554 pSMB->OldFileName[name_len + 1] = 0x04;
1555 name_len2 =
b1a45695 1556 cifsConvertToUCS((__le16 *)&pSMB->OldFileName[name_len + 2],
737b758c 1557 toName, PATH_MAX, nls_codepage, remap);
1da177e4
LT		 1558 name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ;
1559 name_len2 *= 2; /* convert to bytes */
1560 } else { /* BB improve the check for buffer overruns BB */
1561 name_len = strnlen(fromName, PATH_MAX);
1562 name_len++; /* trailing null */
1563 strncpy(pSMB->OldFileName, fromName, name_len);
1564 name_len2 = strnlen(toName, PATH_MAX);
1565 name_len2++; /* trailing null */
1566 pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */
1567 strncpy(&pSMB->OldFileName[name_len + 1], toName, name_len2);
1568 name_len2++; /* trailing null */
1569 name_len2++; /* signature byte */
1570 }
1571
1572 count = 1 /* string type byte */ + name_len + name_len2;
1573 pSMB->hdr.smb_buf_length += count;
1574 pSMB->ByteCount = cpu_to_le16(count);
1575
1576 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
1577 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
1578 if (rc) {
1579 cFYI(1, ("Send error in hard link (NT rename) = %d", rc));
1580 }
1581 cifs_buf_release(pSMB);
1582 if (rc == -EAGAIN)
1583 goto winCreateHardLinkRetry;
1584
1585 return rc;
1586}
1587
1588int
1589CIFSSMBUnixQuerySymLink(const int xid, struct cifsTconInfo *tcon,
1590 const unsigned char *searchName,
1591 char *symlinkinfo, const int buflen,
1592 const struct nls_table *nls_codepage)
1593{
1594/* SMB_QUERY_FILE_UNIX_LINK */
1595 TRANSACTION2_QPI_REQ *pSMB = NULL;
1596 TRANSACTION2_QPI_RSP *pSMBr = NULL;
1597 int rc = 0;
1598 int bytes_returned;
1599 int name_len;
1600 __u16 params, byte_count;
1601
1602 cFYI(1, ("In QPathSymLinkInfo (Unix) for path %s", searchName));
1603
1604querySymLinkRetry:
1605 rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
1606 (void **) &pSMBr);
1607 if (rc)
1608 return rc;
1609
1610 if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
1611 name_len =
1612 cifs_strtoUCS((wchar_t *) pSMB->FileName, searchName, PATH_MAX
1613 /* find define for this maxpathcomponent */
1614 , nls_codepage);
1615 name_len++; /* trailing null */
1616 name_len *= 2;
1617 } else { /* BB improve the check for buffer overruns BB */
1618 name_len = strnlen(searchName, PATH_MAX);
1619 name_len++; /* trailing null */
1620 strncpy(pSMB->FileName, searchName, name_len);
1621 }
1622
1623 params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ;
1624 pSMB->TotalDataCount = 0;
1625 pSMB->MaxParameterCount = cpu_to_le16(2);
1626 /* BB find exact max data count below from sess structure BB */
1627 pSMB->MaxDataCount = cpu_to_le16(4000);
1628 pSMB->MaxSetupCount = 0;
1629 pSMB->Reserved = 0;
1630 pSMB->Flags = 0;
1631 pSMB->Timeout = 0;
1632 pSMB->Reserved2 = 0;
1633 pSMB->ParameterOffset = cpu_to_le16(offsetof(
1634 struct smb_com_transaction2_qpi_req ,InformationLevel) - 4);
1635 pSMB->DataCount = 0;
1636 pSMB->DataOffset = 0;
1637 pSMB->SetupCount = 1;
1638 pSMB->Reserved3 = 0;
1639 pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION);
1640 byte_count = params + 1 /* pad */ ;
1641 pSMB->TotalParameterCount = cpu_to_le16(params);
1642 pSMB->ParameterCount = pSMB->TotalParameterCount;
1643 pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_LINK);
1644 pSMB->Reserved4 = 0;
1645 pSMB->hdr.smb_buf_length += byte_count;
1646 pSMB->ByteCount = cpu_to_le16(byte_count);
1647
1648 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
1649 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
1650 if (rc) {
1651 cFYI(1, ("Send error in QuerySymLinkInfo = %d", rc));
1652 } else {
1653 /* decode response */
1654
1655 rc = validate_t2((struct smb_t2_rsp *)pSMBr);
1656 if (rc || (pSMBr->ByteCount < 2))
1657 /* BB also check enough total bytes returned */
1658 rc = -EIO; /* bad smb */
1659 else {
1660 __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
1661 __u16 count = le16_to_cpu(pSMBr->t2.DataCount);
1662
1663 if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) {
1664 name_len = UniStrnlen((wchar_t *) ((char *)
1665 &pSMBr->hdr.Protocol +data_offset),
1666 min_t(const int, buflen,count) / 2);
737b758c 1667 /* BB FIXME investigate remapping reserved chars here */
1da177e4
LT		 1668 cifs_strfromUCS_le(symlinkinfo,
1669 (wchar_t *) ((char *)&pSMBr->hdr.Protocol +
1670 data_offset),
1671 name_len, nls_codepage);
1672 } else {
1673 strncpy(symlinkinfo,
1674 (char *) &pSMBr->hdr.Protocol +
1675 data_offset,
1676 min_t(const int, buflen, count));
1677 }
1678 symlinkinfo[buflen] = 0;
1679 /* just in case so calling code does not go off the end of buffer */
1680 }
1681 }
1682 cifs_buf_release(pSMB);
1683 if (rc == -EAGAIN)
1684 goto querySymLinkRetry;
1685 return rc;
1686}
1687
1688int
1689CIFSSMBQueryReparseLinkInfo(const int xid, struct cifsTconInfo *tcon,
1690 const unsigned char *searchName,
1691 char *symlinkinfo, const int buflen,__u16 fid,
1692 const struct nls_table *nls_codepage)
1693{
1694 int rc = 0;
1695 int bytes_returned;
1696 int name_len;
1697 struct smb_com_transaction_ioctl_req * pSMB;
1698 struct smb_com_transaction_ioctl_rsp * pSMBr;
1699
1700 cFYI(1, ("In Windows reparse style QueryLink for path %s", searchName));
1701 rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB,
1702 (void **) &pSMBr);
1703 if (rc)
1704 return rc;
1705
1706 pSMB->TotalParameterCount = 0 ;
1707 pSMB->TotalDataCount = 0;
1708 pSMB->MaxParameterCount = cpu_to_le32(2);
1709 /* BB find exact data count max from sess structure BB */
1710 pSMB->MaxDataCount = cpu_to_le32(4000);
1711 pSMB->MaxSetupCount = 4;
1712 pSMB->Reserved = 0;
1713 pSMB->ParameterOffset = 0;
1714 pSMB->DataCount = 0;
1715 pSMB->DataOffset = 0;
1716 pSMB->SetupCount = 4;
1717 pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_IOCTL);
1718 pSMB->ParameterCount = pSMB->TotalParameterCount;
1719 pSMB->FunctionCode = cpu_to_le32(FSCTL_GET_REPARSE_POINT);
1720 pSMB->IsFsctl = 1; /* FSCTL */
1721 pSMB->IsRootFlag = 0;
1722 pSMB->Fid = fid; /* file handle always le */
1723 pSMB->ByteCount = 0;
1724
1725 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
1726 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
1727 if (rc) {
1728 cFYI(1, ("Send error in QueryReparseLinkInfo = %d", rc));
1729 } else { /* decode response */
1730 __u32 data_offset = le32_to_cpu(pSMBr->DataOffset);
1731 __u32 data_count = le32_to_cpu(pSMBr->DataCount);
1732 if ((pSMBr->ByteCount < 2) || (data_offset > 512))
1733 /* BB also check enough total bytes returned */
1734 rc = -EIO; /* bad smb */
1735 else {
1736 if(data_count && (data_count < 2048)) {
1737 char * end_of_smb = pSMBr->ByteCount + (char *)&pSMBr->ByteCount;
1738
1739 struct reparse_data * reparse_buf = (struct reparse_data *)
1740 ((char *)&pSMBr->hdr.Protocol + data_offset);
1741 if((char*)reparse_buf >= end_of_smb) {
1742 rc = -EIO;
1743 goto qreparse_out;
1744 }
1745 if((reparse_buf->LinkNamesBuf +
1746 reparse_buf->TargetNameOffset +
1747 reparse_buf->TargetNameLen) >
1748 end_of_smb) {
1749 cFYI(1,("reparse buf extended beyond SMB"));
1750 rc = -EIO;
1751 goto qreparse_out;
1752 }
1753
1754 if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) {
1755 name_len = UniStrnlen((wchar_t *)
1756 (reparse_buf->LinkNamesBuf +
1757 reparse_buf->TargetNameOffset),
1758 min(buflen/2, reparse_buf->TargetNameLen / 2));
1759 cifs_strfromUCS_le(symlinkinfo,
1760 (wchar_t *) (reparse_buf->LinkNamesBuf +
1761 reparse_buf->TargetNameOffset),
1762 name_len, nls_codepage);
1763 } else { /* ASCII names */
1764 strncpy(symlinkinfo,reparse_buf->LinkNamesBuf +
1765 reparse_buf->TargetNameOffset,
1766 min_t(const int, buflen, reparse_buf->TargetNameLen));
1767 }
1768 } else {
1769 rc = -EIO;
1770 cFYI(1,("Invalid return data count on get reparse info ioctl"));
1771 }
1772 symlinkinfo[buflen] = 0; /* just in case so the caller
1773 does not go off the end of the buffer */
1774 cFYI(1,("readlink result - %s ",symlinkinfo));
1775 }
1776 }
1777qreparse_out:
1778 if (pSMB)
1779 cifs_buf_release(pSMB);
1780
1781 /* Note: On -EAGAIN error only caller can retry on handle based calls
1782 since file handle passed in no longer valid */
1783
1784 return rc;
1785}
1786
1787#ifdef CONFIG_CIFS_POSIX
1788
1789/*Convert an Access Control Entry from wire format to local POSIX xattr format*/
1790static void cifs_convert_ace(posix_acl_xattr_entry * ace, struct cifs_posix_ace * cifs_ace)
1791{
1792 /* u8 cifs fields do not need le conversion */
1793 ace->e_perm = (__u16)cifs_ace->cifs_e_perm;
1794 ace->e_tag = (__u16)cifs_ace->cifs_e_tag;
1795 ace->e_id = (__u32)le64_to_cpu(cifs_ace->cifs_uid);
1796 /* cFYI(1,("perm %d tag %d id %d",ace->e_perm,ace->e_tag,ace->e_id)); */
1797
1798 return;
1799}
1800
1801/* Convert ACL from CIFS POSIX wire format to local Linux POSIX ACL xattr */
737b758c
SF		 1802static int cifs_copy_posix_acl(char * trgt,char * src, const int buflen,
1803 const int acl_type,const int size_of_data_area)
1da177e4
LT		 1804{
1805 int size = 0;
1806 int i;
1807 __u16 count;
1808 struct cifs_posix_ace * pACE;
1809 struct cifs_posix_acl * cifs_acl = (struct cifs_posix_acl *)src;
1810 posix_acl_xattr_header * local_acl = (posix_acl_xattr_header *)trgt;
1811
1812 if (le16_to_cpu(cifs_acl->version) != CIFS_ACL_VERSION)
1813 return -EOPNOTSUPP;
1814
1815 if(acl_type & ACL_TYPE_ACCESS) {
1816 count = le16_to_cpu(cifs_acl->access_entry_count);
1817 pACE = &cifs_acl->ace_array[0];
1818 size = sizeof(struct cifs_posix_acl);
1819 size += sizeof(struct cifs_posix_ace) * count;
1820 /* check if we would go beyond end of SMB */
1821 if(size_of_data_area < size) {
1822 cFYI(1,("bad CIFS POSIX ACL size %d vs. %d",size_of_data_area,size));
1823 return -EINVAL;
1824 }
1825 } else if(acl_type & ACL_TYPE_DEFAULT) {
1826 count = le16_to_cpu(cifs_acl->access_entry_count);
1827 size = sizeof(struct cifs_posix_acl);
1828 size += sizeof(struct cifs_posix_ace) * count;
1829/* skip past access ACEs to get to default ACEs */
1830 pACE = &cifs_acl->ace_array[count];
1831 count = le16_to_cpu(cifs_acl->default_entry_count);
1832 size += sizeof(struct cifs_posix_ace) * count;
1833 /* check if we would go beyond end of SMB */
1834 if(size_of_data_area < size)
1835 return -EINVAL;
1836 } else {
1837 /* illegal type */
1838 return -EINVAL;
1839 }
1840
1841 size = posix_acl_xattr_size(count);
1842 if((buflen == 0) || (local_acl == NULL)) {
1843 /* used to query ACL EA size */
1844 } else if(size > buflen) {
1845 return -ERANGE;
1846 } else /* buffer big enough */ {
1847 local_acl->a_version = POSIX_ACL_XATTR_VERSION;
1848 for(i = 0;i < count ;i++) {
1849 cifs_convert_ace(&local_acl->a_entries[i],pACE);
1850 pACE ++;
1851 }
1852 }
1853 return size;
1854}
1855
1856static __u16 convert_ace_to_cifs_ace(struct cifs_posix_ace * cifs_ace,
1857 const posix_acl_xattr_entry * local_ace)
1858{
1859 __u16 rc = 0; /* 0 = ACL converted ok */
1860
1861 cifs_ace->cifs_e_perm = (__u8)cpu_to_le16(local_ace->e_perm);
1862 cifs_ace->cifs_e_tag = (__u8)cpu_to_le16(local_ace->e_tag);
1863 /* BB is there a better way to handle the large uid? */
1864 if(local_ace->e_id == -1) {
1865 /* Probably no need to le convert -1 on any arch but can not hurt */
1866 cifs_ace->cifs_uid = cpu_to_le64(-1);
1867 } else
1868 cifs_ace->cifs_uid = (__u64)cpu_to_le32(local_ace->e_id);
1869 /*cFYI(1,("perm %d tag %d id %d",ace->e_perm,ace->e_tag,ace->e_id));*/
1870 return rc;
1871}
1872
1873/* Convert ACL from local Linux POSIX xattr to CIFS POSIX ACL wire format */
1874static __u16 ACL_to_cifs_posix(char * parm_data,const char * pACL,const int buflen,
1875 const int acl_type)
1876{
1877 __u16 rc = 0;
1878 struct cifs_posix_acl * cifs_acl = (struct cifs_posix_acl *)parm_data;
1879 posix_acl_xattr_header * local_acl = (posix_acl_xattr_header *)pACL;
1880 int count;
1881 int i;
1882
1883 if((buflen == 0) || (pACL == NULL) || (cifs_acl == NULL))
1884 return 0;
1885
1886 count = posix_acl_xattr_count((size_t)buflen);
1887 cFYI(1,("setting acl with %d entries from buf of length %d and version of %d",
1888 count,buflen,local_acl->a_version));
1889 if(local_acl->a_version != 2) {
1890 cFYI(1,("unknown POSIX ACL version %d",local_acl->a_version));
1891 return 0;
1892 }
1893 cifs_acl->version = cpu_to_le16(1);
1894 if(acl_type == ACL_TYPE_ACCESS)
1895 cifs_acl->access_entry_count = count;
1896 else if(acl_type == ACL_TYPE_DEFAULT)
1897 cifs_acl->default_entry_count = count;
1898 else {
1899 cFYI(1,("unknown ACL type %d",acl_type));
1900 return 0;
1901 }
1902 for(i=0;i<count;i++) {
1903 rc = convert_ace_to_cifs_ace(&cifs_acl->ace_array[i],
1904 &local_acl->a_entries[i]);
1905 if(rc != 0) {
1906 /* ACE not converted */
1907 break;
1908 }
1909 }
1910 if(rc == 0) {
1911 rc = (__u16)(count * sizeof(struct cifs_posix_ace));
1912 rc += sizeof(struct cifs_posix_acl);
1913 /* BB add check to make sure ACL does not overflow SMB */
1914 }
1915 return rc;
1916}
1917
1918int
1919CIFSSMBGetPosixACL(const int xid, struct cifsTconInfo *tcon,
1920 const unsigned char *searchName,
1921 char *acl_inf, const int buflen, const int acl_type,
737b758c 1922 const struct nls_table *nls_codepage, int remap)
1da177e4
LT		 1923{
1924/* SMB_QUERY_POSIX_ACL */
1925 TRANSACTION2_QPI_REQ *pSMB = NULL;
1926 TRANSACTION2_QPI_RSP *pSMBr = NULL;
1927 int rc = 0;
1928 int bytes_returned;
1929 int name_len;
1930 __u16 params, byte_count;
1931
1932 cFYI(1, ("In GetPosixACL (Unix) for path %s", searchName));
1933
1934queryAclRetry:
1935 rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
1936 (void **) &pSMBr);
1937 if (rc)
1938 return rc;
1939
1940 if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
1941 name_len =
b1a45695 1942 cifsConvertToUCS((__le16 *) pSMB->FileName, searchName,
737b758c 1943 PATH_MAX, nls_codepage, remap);
1da177e4
LT		 1944 name_len++; /* trailing null */
1945 name_len *= 2;
1946 pSMB->FileName[name_len] = 0;
1947 pSMB->FileName[name_len+1] = 0;
1948 } else { /* BB improve the check for buffer overruns BB */
1949 name_len = strnlen(searchName, PATH_MAX);
1950 name_len++; /* trailing null */
1951 strncpy(pSMB->FileName, searchName, name_len);
1952 }
1953
1954 params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ;
1955 pSMB->TotalDataCount = 0;
1956 pSMB->MaxParameterCount = cpu_to_le16(2);
1957 /* BB find exact max data count below from sess structure BB */
1958 pSMB->MaxDataCount = cpu_to_le16(4000);
1959 pSMB->MaxSetupCount = 0;
1960 pSMB->Reserved = 0;
1961 pSMB->Flags = 0;
1962 pSMB->Timeout = 0;
1963 pSMB->Reserved2 = 0;
1964 pSMB->ParameterOffset = cpu_to_le16(
1965 offsetof(struct smb_com_transaction2_qpi_req ,InformationLevel) - 4);
1966 pSMB->DataCount = 0;
1967 pSMB->DataOffset = 0;
1968 pSMB->SetupCount = 1;
1969 pSMB->Reserved3 = 0;
1970 pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION);
1971 byte_count = params + 1 /* pad */ ;
1972 pSMB->TotalParameterCount = cpu_to_le16(params);
1973 pSMB->ParameterCount = pSMB->TotalParameterCount;
1974 pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_POSIX_ACL);
1975 pSMB->Reserved4 = 0;
1976 pSMB->hdr.smb_buf_length += byte_count;
1977 pSMB->ByteCount = cpu_to_le16(byte_count);
1978
1979 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
1980 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
1981 if (rc) {
1982 cFYI(1, ("Send error in Query POSIX ACL = %d", rc));
1983 } else {
1984 /* decode response */
1985
1986 rc = validate_t2((struct smb_t2_rsp *)pSMBr);
1987 if (rc || (pSMBr->ByteCount < 2))
1988 /* BB also check enough total bytes returned */
1989 rc = -EIO; /* bad smb */
1990 else {
1991 __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
1992 __u16 count = le16_to_cpu(pSMBr->t2.DataCount);
1993 rc = cifs_copy_posix_acl(acl_inf,
1994 (char *)&pSMBr->hdr.Protocol+data_offset,
1995 buflen,acl_type,count);
1996 }
1997 }
1998 cifs_buf_release(pSMB);
1999 if (rc == -EAGAIN)
2000 goto queryAclRetry;
2001 return rc;
2002}
2003
2004int
2005CIFSSMBSetPosixACL(const int xid, struct cifsTconInfo *tcon,
2006 const unsigned char *fileName,
737b758c
SF		 2007 const char *local_acl, const int buflen,
2008 const int acl_type,
2009 const struct nls_table *nls_codepage, int remap)
1da177e4
LT		 2010{
2011 struct smb_com_transaction2_spi_req *pSMB = NULL;
2012 struct smb_com_transaction2_spi_rsp *pSMBr = NULL;
2013 char *parm_data;
2014 int name_len;
2015 int rc = 0;
2016 int bytes_returned = 0;
2017 __u16 params, byte_count, data_count, param_offset, offset;
2018
2019 cFYI(1, ("In SetPosixACL (Unix) for path %s", fileName));
2020setAclRetry:
2021 rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
2022 (void **) &pSMBr);
2023 if (rc)
2024 return rc;
2025 if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
2026 name_len =
b1a45695 2027 cifsConvertToUCS((__le16 *) pSMB->FileName, fileName,
737b758c 2028 PATH_MAX, nls_codepage, remap);
1da177e4
LT		 2029 name_len++; /* trailing null */
2030 name_len *= 2;
2031 } else { /* BB improve the check for buffer overruns BB */
2032 name_len = strnlen(fileName, PATH_MAX);
2033 name_len++; /* trailing null */
2034 strncpy(pSMB->FileName, fileName, name_len);
2035 }
2036 params = 6 + name_len;
2037 pSMB->MaxParameterCount = cpu_to_le16(2);
2038 pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB size from sess */
2039 pSMB->MaxSetupCount = 0;
2040 pSMB->Reserved = 0;
2041 pSMB->Flags = 0;
2042 pSMB->Timeout = 0;
2043 pSMB->Reserved2 = 0;
2044 param_offset = offsetof(struct smb_com_transaction2_spi_req,
2045 InformationLevel) - 4;
2046 offset = param_offset + params;
2047 parm_data = ((char *) &pSMB->hdr.Protocol) + offset;
2048 pSMB->ParameterOffset = cpu_to_le16(param_offset);
2049
2050 /* convert to on the wire format for POSIX ACL */
2051 data_count = ACL_to_cifs_posix(parm_data,local_acl,buflen,acl_type);
2052
2053 if(data_count == 0) {
2054 rc = -EOPNOTSUPP;
2055 goto setACLerrorExit;
2056 }
2057 pSMB->DataOffset = cpu_to_le16(offset);
2058 pSMB->SetupCount = 1;
2059 pSMB->Reserved3 = 0;
2060 pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION);
2061 pSMB->InformationLevel = cpu_to_le16(SMB_SET_POSIX_ACL);
2062 byte_count = 3 /* pad */ + params + data_count;
2063 pSMB->DataCount = cpu_to_le16(data_count);
2064 pSMB->TotalDataCount = pSMB->DataCount;
2065 pSMB->ParameterCount = cpu_to_le16(params);
2066 pSMB->TotalParameterCount = pSMB->ParameterCount;
2067 pSMB->Reserved4 = 0;
2068 pSMB->hdr.smb_buf_length += byte_count;
2069 pSMB->ByteCount = cpu_to_le16(byte_count);
2070 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
2071 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
2072 if (rc) {
2073 cFYI(1, ("Set POSIX ACL returned %d", rc));
2074 }
2075
2076setACLerrorExit:
2077 cifs_buf_release(pSMB);
2078 if (rc == -EAGAIN)
2079 goto setAclRetry;
2080 return rc;
2081}
2082
f654bac2
SF		 2083/* BB fix tabs in this function FIXME BB */
2084int
2085CIFSGetExtAttr(const int xid, struct cifsTconInfo *tcon,
2086 const int netfid, __u64 * pExtAttrBits, __u64 *pMask)
2087{
2088 int rc = 0;
2089 struct smb_t2_qfi_req *pSMB = NULL;
2090 struct smb_t2_qfi_rsp *pSMBr = NULL;
2091 int bytes_returned;
2092 __u16 params, byte_count;
2093
2094 cFYI(1,("In GetExtAttr"));
2095 if(tcon == NULL)
2096 return -ENODEV;
2097
2098GetExtAttrRetry:
2099 rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
2100 (void **) &pSMBr);
2101 if (rc)
2102 return rc;
2103
c67593a0 2104 params = 2 /* level */ +2 /* fid */;
f654bac2 2105 pSMB->t2.TotalDataCount = 0;
c67593a0 2106 pSMB->t2.MaxParameterCount = cpu_to_le16(4);
f654bac2
SF		 2107 /* BB find exact max data count below from sess structure BB */
2108 pSMB->t2.MaxDataCount = cpu_to_le16(4000);
2109 pSMB->t2.MaxSetupCount = 0;
2110 pSMB->t2.Reserved = 0;
2111 pSMB->t2.Flags = 0;
2112 pSMB->t2.Timeout = 0;
2113 pSMB->t2.Reserved2 = 0;
c67593a0
SF		 2114 pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req,
2115 Fid) - 4);
f654bac2
SF		 2116 pSMB->t2.DataCount = 0;
2117 pSMB->t2.DataOffset = 0;
2118 pSMB->t2.SetupCount = 1;
2119 pSMB->t2.Reserved3 = 0;
2120 pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION);
c67593a0 2121 byte_count = params + 1 /* pad */ ;
f654bac2
SF		 2122 pSMB->t2.TotalParameterCount = cpu_to_le16(params);
2123 pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount;
2124 pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_ATTR_FLAGS);
c67593a0 2125 pSMB->Pad = 0;
f654bac2
SF		 2126 pSMB->Fid = netfid;
2127 pSMB->hdr.smb_buf_length += byte_count;
2128 pSMB->t2.ByteCount = cpu_to_le16(byte_count);
2129
2130 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
2131 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
2132 if (rc) {
2133 cFYI(1, ("error %d in GetExtAttr", rc));
2134 } else {
2135 /* decode response */
2136 rc = validate_t2((struct smb_t2_rsp *)pSMBr);
2137 if (rc || (pSMBr->ByteCount < 2))
2138 /* BB also check enough total bytes returned */
2139 /* If rc should we check for EOPNOSUPP and
2140 disable the srvino flag? or in caller? */
2141 rc = -EIO; /* bad smb */
2142 else {
2143 __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
2144 __u16 count = le16_to_cpu(pSMBr->t2.DataCount);
2145 struct file_chattr_info * pfinfo;
2146 /* BB Do we need a cast or hash here ? */
2147 if(count != 16) {
2148 cFYI(1, ("Illegal size ret in GetExtAttr"));
2149 rc = -EIO;
2150 goto GetExtAttrOut;
2151 }
2152 pfinfo = (struct file_chattr_info *)
2153 (data_offset + (char *) &pSMBr->hdr.Protocol);
2154 *pExtAttrBits = le64_to_cpu(pfinfo->mode);
2155 *pMask = le64_to_cpu(pfinfo->mask);
2156 }
2157 }
2158GetExtAttrOut:
2159 cifs_buf_release(pSMB);
2160 if (rc == -EAGAIN)
2161 goto GetExtAttrRetry;
2162 return rc;
2163}
2164
2165
2166#endif /* CONFIG_POSIX */
1da177e4
LT		 2167
2168int
2169CIFSSMBQPathInfo(const int xid, struct cifsTconInfo *tcon,
2170 const unsigned char *searchName,
2171 FILE_ALL_INFO * pFindData,
737b758c 2172 const struct nls_table *nls_codepage, int remap)
1da177e4
LT		 2173{
2174/* level 263 SMB_QUERY_FILE_ALL_INFO */
2175 TRANSACTION2_QPI_REQ *pSMB = NULL;
2176 TRANSACTION2_QPI_RSP *pSMBr = NULL;
2177 int rc = 0;
2178 int bytes_returned;
2179 int name_len;
2180 __u16 params, byte_count;
2181
2182/* cFYI(1, ("In QPathInfo path %s", searchName)); */
2183QPathInfoRetry:
2184 rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
2185 (void **) &pSMBr);
2186 if (rc)
2187 return rc;
2188
2189 if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
2190 name_len =
b1a45695 2191 cifsConvertToUCS((__le16 *) pSMB->FileName, searchName,
737b758c 2192 PATH_MAX, nls_codepage, remap);
1da177e4
LT		 2193 name_len++; /* trailing null */
2194 name_len *= 2;
2195 } else { /* BB improve the check for buffer overruns BB */
2196 name_len = strnlen(searchName, PATH_MAX);
2197 name_len++; /* trailing null */
2198 strncpy(pSMB->FileName, searchName, name_len);
2199 }
2200
2201 params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */ ;
2202 pSMB->TotalDataCount = 0;
2203 pSMB->MaxParameterCount = cpu_to_le16(2);
2204 pSMB->MaxDataCount = cpu_to_le16(4000); /* BB find exact max SMB PDU from sess structure BB */
2205 pSMB->MaxSetupCount = 0;
2206 pSMB->Reserved = 0;
2207 pSMB->Flags = 0;
2208 pSMB->Timeout = 0;
2209 pSMB->Reserved2 = 0;
2210 pSMB->ParameterOffset = cpu_to_le16(offsetof(
2211 struct smb_com_transaction2_qpi_req ,InformationLevel) - 4);
2212 pSMB->DataCount = 0;
2213 pSMB->DataOffset = 0;
2214 pSMB->SetupCount = 1;
2215 pSMB->Reserved3 = 0;
2216 pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION);
2217 byte_count = params + 1 /* pad */ ;
2218 pSMB->TotalParameterCount = cpu_to_le16(params);
2219 pSMB->ParameterCount = pSMB->TotalParameterCount;
2220 pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_ALL_INFO);
2221 pSMB->Reserved4 = 0;
2222 pSMB->hdr.smb_buf_length += byte_count;
2223 pSMB->ByteCount = cpu_to_le16(byte_count);
2224
2225 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
2226 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
2227 if (rc) {
2228 cFYI(1, ("Send error in QPathInfo = %d", rc));
2229 } else { /* decode response */
2230 rc = validate_t2((struct smb_t2_rsp *)pSMBr);
2231
2232 if (rc || (pSMBr->ByteCount < 40))
2233 rc = -EIO; /* bad smb */
2234 else if (pFindData){
2235 __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
2236 memcpy((char *) pFindData,
2237 (char *) &pSMBr->hdr.Protocol +
2238 data_offset, sizeof (FILE_ALL_INFO));
2239 } else
2240 rc = -ENOMEM;
2241 }
2242 cifs_buf_release(pSMB);
2243 if (rc == -EAGAIN)
2244 goto QPathInfoRetry;
2245
2246 return rc;
2247}
2248
2249int
2250CIFSSMBUnixQPathInfo(const int xid, struct cifsTconInfo *tcon,
2251 const unsigned char *searchName,
2252 FILE_UNIX_BASIC_INFO * pFindData,
737b758c 2253 const struct nls_table *nls_codepage, int remap)
1da177e4
LT		 2254{
2255/* SMB_QUERY_FILE_UNIX_BASIC */
2256 TRANSACTION2_QPI_REQ *pSMB = NULL;
2257 TRANSACTION2_QPI_RSP *pSMBr = NULL;
2258 int rc = 0;
2259 int bytes_returned = 0;
2260 int name_len;
2261 __u16 params, byte_count;
2262
2263 cFYI(1, ("In QPathInfo (Unix) the path %s", searchName));
2264UnixQPathInfoRetry:
2265 rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
2266 (void **) &pSMBr);
2267 if (rc)
2268 return rc;
2269
2270 if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
2271 name_len =
b1a45695 2272 cifsConvertToUCS((__le16 *) pSMB->FileName, searchName,
737b758c 2273 PATH_MAX, nls_codepage, remap);
1da177e4
LT		 2274 name_len++; /* trailing null */
2275 name_len *= 2;
2276 } else { /* BB improve the check for buffer overruns BB */
2277 name_len = strnlen(searchName, PATH_MAX);
2278 name_len++; /* trailing null */
2279 strncpy(pSMB->FileName, searchName, name_len);
2280 }
2281
2282 params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */ ;
2283 pSMB->TotalDataCount = 0;
2284 pSMB->MaxParameterCount = cpu_to_le16(2);
2285 /* BB find exact max SMB PDU from sess structure BB */
2286 pSMB->MaxDataCount = cpu_to_le16(4000);
2287 pSMB->MaxSetupCount = 0;
2288 pSMB->Reserved = 0;
2289 pSMB->Flags = 0;
2290 pSMB->Timeout = 0;
2291 pSMB->Reserved2 = 0;
2292 pSMB->ParameterOffset = cpu_to_le16(offsetof(
2293 struct smb_com_transaction2_qpi_req ,InformationLevel) - 4);
2294 pSMB->DataCount = 0;
2295 pSMB->DataOffset = 0;
2296 pSMB->SetupCount = 1;
2297 pSMB->Reserved3 = 0;
2298 pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION);
2299 byte_count = params + 1 /* pad */ ;
2300 pSMB->TotalParameterCount = cpu_to_le16(params);
2301 pSMB->ParameterCount = pSMB->TotalParameterCount;
2302 pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC);
2303 pSMB->Reserved4 = 0;
2304 pSMB->hdr.smb_buf_length += byte_count;
2305 pSMB->ByteCount = cpu_to_le16(byte_count);
2306
2307 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
2308 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
2309 if (rc) {
2310 cFYI(1, ("Send error in QPathInfo = %d", rc));
2311 } else { /* decode response */
2312 rc = validate_t2((struct smb_t2_rsp *)pSMBr);
2313
2314 if (rc || (pSMBr->ByteCount < sizeof(FILE_UNIX_BASIC_INFO))) {
2315 rc = -EIO; /* bad smb */
2316 } else {
2317 __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
2318 memcpy((char *) pFindData,
2319 (char *) &pSMBr->hdr.Protocol +
2320 data_offset,
2321 sizeof (FILE_UNIX_BASIC_INFO));
2322 }
2323 }
2324 cifs_buf_release(pSMB);
2325 if (rc == -EAGAIN)
2326 goto UnixQPathInfoRetry;
2327
2328 return rc;
2329}
2330
2331#if 0 /* function unused at present */
2332int CIFSFindSingle(const int xid, struct cifsTconInfo *tcon,
2333 const char *searchName, FILE_ALL_INFO * findData,
2334 const struct nls_table *nls_codepage)
2335{
2336/* level 257 SMB_ */
2337 TRANSACTION2_FFIRST_REQ *pSMB = NULL;
2338 TRANSACTION2_FFIRST_RSP *pSMBr = NULL;
2339 int rc = 0;
2340 int bytes_returned;
2341 int name_len;
2342 __u16 params, byte_count;
2343
2344 cFYI(1, ("In FindUnique"));
2345findUniqueRetry:
2346 rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
2347 (void **) &pSMBr);
2348 if (rc)
2349 return rc;
2350
2351 if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
2352 name_len =
b1a45695 2353 cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, PATH_MAX
1da177e4
LT		 2354 /* find define for this maxpathcomponent */
2355 , nls_codepage);
2356 name_len++; /* trailing null */
2357 name_len *= 2;
2358 } else { /* BB improve the check for buffer overruns BB */
2359 name_len = strnlen(searchName, PATH_MAX);
2360 name_len++; /* trailing null */
2361 strncpy(pSMB->FileName, searchName, name_len);
2362 }
2363
2364 params = 12 + name_len /* includes null */ ;
2365 pSMB->TotalDataCount = 0; /* no EAs */
2366 pSMB->MaxParameterCount = cpu_to_le16(2);
2367 pSMB->MaxDataCount = cpu_to_le16(4000); /* BB find exact max SMB PDU from sess structure BB */
2368 pSMB->MaxSetupCount = 0;
2369 pSMB->Reserved = 0;
2370 pSMB->Flags = 0;
2371 pSMB->Timeout = 0;
2372 pSMB->Reserved2 = 0;
2373 pSMB->ParameterOffset = cpu_to_le16(
2374 offsetof(struct smb_com_transaction2_ffirst_req,InformationLevel) - 4);
2375 pSMB->DataCount = 0;
2376 pSMB->DataOffset = 0;
2377 pSMB->SetupCount = 1; /* one byte, no need to le convert */
2378 pSMB->Reserved3 = 0;
2379 pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_FIRST);
2380 byte_count = params + 1 /* pad */ ;
2381 pSMB->TotalParameterCount = cpu_to_le16(params);
2382 pSMB->ParameterCount = pSMB->TotalParameterCount;
2383 pSMB->SearchAttributes =
2384 cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM |
2385 ATTR_DIRECTORY);
2386 pSMB->SearchCount = cpu_to_le16(16); /* BB increase */
2387 pSMB->SearchFlags = cpu_to_le16(1);
2388 pSMB->InformationLevel = cpu_to_le16(SMB_FIND_FILE_DIRECTORY_INFO);
2389 pSMB->SearchStorageType = 0; /* BB what should we set this to? BB */
2390 pSMB->hdr.smb_buf_length += byte_count;
2391 pSMB->ByteCount = cpu_to_le16(byte_count);
2392
2393 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
2394 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
2395
2396 if (rc) {
2397 cFYI(1, ("Send error in FindFileDirInfo = %d", rc));
2398 } else { /* decode response */
dfb7533b
SF		 2399#ifdef CONFIG_CIFS_STATS
2400 atomic_inc(&tcon->num_ffirst);
2401#endif
1da177e4
LT		 2402 /* BB fill in */
2403 }
2404
2405 cifs_buf_release(pSMB);
2406 if (rc == -EAGAIN)
2407 goto findUniqueRetry;
2408
2409 return rc;
2410}
2411#endif /* end unused (temporarily) function */
2412
2413/* xid, tcon, searchName and codepage are input parms, rest are returned */
2414int
2415CIFSFindFirst(const int xid, struct cifsTconInfo *tcon,
2416 const char *searchName,
2417 const struct nls_table *nls_codepage,
2418 __u16 * pnetfid,
ac67055e 2419 struct cifs_search_info * psrch_inf, int remap, const char dirsep)
1da177e4
LT		 2420{
2421/* level 257 SMB_ */
2422 TRANSACTION2_FFIRST_REQ *pSMB = NULL;
2423 TRANSACTION2_FFIRST_RSP *pSMBr = NULL;
2424 T2_FFIRST_RSP_PARMS * parms;
2425 int rc = 0;
2426 int bytes_returned = 0;
2427 int name_len;
2428 __u16 params, byte_count;
2429
737b758c 2430 cFYI(1, ("In FindFirst for %s",searchName));
1da177e4
LT		 2431
2432findFirstRetry:
2433 rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
2434 (void **) &pSMBr);
2435 if (rc)
2436 return rc;
2437
2438 if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
2439 name_len =
b1a45695 2440 cifsConvertToUCS((__le16 *) pSMB->FileName,searchName,
737b758c
SF		 2441 PATH_MAX, nls_codepage, remap);
2442 /* We can not add the asterik earlier in case
2443 it got remapped to 0xF03A as if it were part of the
2444 directory name instead of a wildcard */
1da177e4 2445 name_len *= 2;
ac67055e 2446 pSMB->FileName[name_len] = dirsep;
737b758c
SF		 2447 pSMB->FileName[name_len+1] = 0;
2448 pSMB->FileName[name_len+2] = '*';
2449 pSMB->FileName[name_len+3] = 0;
2450 name_len += 4; /* now the trailing null */
1da177e4
LT		 2451 pSMB->FileName[name_len] = 0; /* null terminate just in case */
2452 pSMB->FileName[name_len+1] = 0;
737b758c 2453 name_len += 2;
1da177e4
LT		 2454 } else { /* BB add check for overrun of SMB buf BB */
2455 name_len = strnlen(searchName, PATH_MAX);
1da177e4
LT		 2456/* BB fix here and in unicode clause above ie
2457 if(name_len > buffersize-header)
2458 free buffer exit; BB */
2459 strncpy(pSMB->FileName, searchName, name_len);
ac67055e 2460 pSMB->FileName[name_len] = dirsep;
68575476
SF		 2461 pSMB->FileName[name_len+1] = '*';
2462 pSMB->FileName[name_len+2] = 0;
2463 name_len += 3;
1da177e4
LT		 2464 }
2465
2466 params = 12 + name_len /* includes null */ ;
2467 pSMB->TotalDataCount = 0; /* no EAs */
2468 pSMB->MaxParameterCount = cpu_to_le16(10);
2469 pSMB->MaxDataCount = cpu_to_le16((tcon->ses->server->maxBuf -
2470 MAX_CIFS_HDR_SIZE) & 0xFFFFFF00);
2471 pSMB->MaxSetupCount = 0;
2472 pSMB->Reserved = 0;
2473 pSMB->Flags = 0;
2474 pSMB->Timeout = 0;
2475 pSMB->Reserved2 = 0;
2476 byte_count = params + 1 /* pad */ ;
2477 pSMB->TotalParameterCount = cpu_to_le16(params);
2478 pSMB->ParameterCount = pSMB->TotalParameterCount;
2479 pSMB->ParameterOffset = cpu_to_le16(
2480 offsetof(struct smb_com_transaction2_ffirst_req, SearchAttributes) - 4);
2481 pSMB->DataCount = 0;
2482 pSMB->DataOffset = 0;
2483 pSMB->SetupCount = 1; /* one byte, no need to make endian neutral */
2484 pSMB->Reserved3 = 0;
2485 pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_FIRST);
2486 pSMB->SearchAttributes =
2487 cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM |
2488 ATTR_DIRECTORY);
2489 pSMB->SearchCount= cpu_to_le16(CIFSMaxBufSize/sizeof(FILE_UNIX_INFO));
2490 pSMB->SearchFlags = cpu_to_le16(CIFS_SEARCH_CLOSE_AT_END |
2491 CIFS_SEARCH_RETURN_RESUME);
2492 pSMB->InformationLevel = cpu_to_le16(psrch_inf->info_level);
2493
2494 /* BB what should we set StorageType to? Does it matter? BB */
2495 pSMB->SearchStorageType = 0;
2496 pSMB->hdr.smb_buf_length += byte_count;
2497 pSMB->ByteCount = cpu_to_le16(byte_count);
2498
2499 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
2500 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
2501
2502 if (rc) {/* BB add logic to retry regular search if Unix search rejected unexpectedly by server */
2503 /* BB Add code to handle unsupported level rc */
2504 cFYI(1, ("Error in FindFirst = %d", rc));
2505
2506 if (pSMB)
2507 cifs_buf_release(pSMB);
2508
2509 /* BB eventually could optimize out free and realloc of buf */
2510 /* for this case */
2511 if (rc == -EAGAIN)
2512 goto findFirstRetry;
2513 } else { /* decode response */
dfb7533b
SF		 2514#ifdef CONFIG_CIFS_STATS
2515 atomic_inc(&tcon->num_ffirst);
2516#endif
1da177e4
LT		 2517 /* BB remember to free buffer if error BB */
2518 rc = validate_t2((struct smb_t2_rsp *)pSMBr);
2519 if(rc == 0) {
2520 if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE)
2521 psrch_inf->unicode = TRUE;
2522 else
2523 psrch_inf->unicode = FALSE;
2524
2525 psrch_inf->ntwrk_buf_start = (char *)pSMBr;
2526 psrch_inf->srch_entries_start =
2527 (char *) &pSMBr->hdr.Protocol +
2528 le16_to_cpu(pSMBr->t2.DataOffset);
1da177e4
LT		 2529 parms = (T2_FFIRST_RSP_PARMS *)((char *) &pSMBr->hdr.Protocol +
2530 le16_to_cpu(pSMBr->t2.ParameterOffset));
2531
2532 if(parms->EndofSearch)
2533 psrch_inf->endOfSearch = TRUE;
2534 else
2535 psrch_inf->endOfSearch = FALSE;
2536
2537 psrch_inf->entries_in_buffer = le16_to_cpu(parms->SearchCount);
2538 psrch_inf->index_of_last_entry =
2539 psrch_inf->entries_in_buffer;
1da177e4
LT		 2540 *pnetfid = parms->SearchHandle;
2541 } else {
2542 cifs_buf_release(pSMB);
2543 }
2544 }
2545
2546 return rc;
2547}
2548
2549int CIFSFindNext(const int xid, struct cifsTconInfo *tcon,
2550 __u16 searchHandle, struct cifs_search_info * psrch_inf)
2551{
2552 TRANSACTION2_FNEXT_REQ *pSMB = NULL;
2553 TRANSACTION2_FNEXT_RSP *pSMBr = NULL;
2554 T2_FNEXT_RSP_PARMS * parms;
2555 char *response_data;
2556 int rc = 0;
2557 int bytes_returned, name_len;
2558 __u16 params, byte_count;
2559
2560 cFYI(1, ("In FindNext"));
2561
2562 if(psrch_inf->endOfSearch == TRUE)
2563 return -ENOENT;
2564
2565 rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
2566 (void **) &pSMBr);
2567 if (rc)
2568 return rc;
2569
2570 params = 14; /* includes 2 bytes of null string, converted to LE below */
2571 byte_count = 0;
2572 pSMB->TotalDataCount = 0; /* no EAs */
2573 pSMB->MaxParameterCount = cpu_to_le16(8);
2574 pSMB->MaxDataCount =
2575 cpu_to_le16((tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE) & 0xFFFFFF00);
2576 pSMB->MaxSetupCount = 0;
2577 pSMB->Reserved = 0;
2578 pSMB->Flags = 0;
2579 pSMB->Timeout = 0;
2580 pSMB->Reserved2 = 0;
2581 pSMB->ParameterOffset = cpu_to_le16(
2582 offsetof(struct smb_com_transaction2_fnext_req,SearchHandle) - 4);
2583 pSMB->DataCount = 0;
2584 pSMB->DataOffset = 0;
2585 pSMB->SetupCount = 1;
2586 pSMB->Reserved3 = 0;
2587 pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_NEXT);
2588 pSMB->SearchHandle = searchHandle; /* always kept as le */
2589 pSMB->SearchCount =
2590 cpu_to_le16(CIFSMaxBufSize / sizeof (FILE_UNIX_INFO));
2591 /* test for Unix extensions */
2592/* if (tcon->ses->capabilities & CAP_UNIX) {
2593 pSMB->InformationLevel = cpu_to_le16(SMB_FIND_FILE_UNIX);
2594 psrch_inf->info_level = SMB_FIND_FILE_UNIX;
2595 } else {
2596 pSMB->InformationLevel =
2597 cpu_to_le16(SMB_FIND_FILE_DIRECTORY_INFO);
2598 psrch_inf->info_level = SMB_FIND_FILE_DIRECTORY_INFO;
2599 } */
2600 pSMB->InformationLevel = cpu_to_le16(psrch_inf->info_level);
2601 pSMB->ResumeKey = psrch_inf->resume_key;
2602 pSMB->SearchFlags =
2603 cpu_to_le16(CIFS_SEARCH_CLOSE_AT_END | CIFS_SEARCH_RETURN_RESUME);
2604
2605 name_len = psrch_inf->resume_name_len;
2606 params += name_len;
2607 if(name_len < PATH_MAX) {
2608 memcpy(pSMB->ResumeFileName, psrch_inf->presume_name, name_len);
2609 byte_count += name_len;
2610 } else {
2611 rc = -EINVAL;
2612 goto FNext2_err_exit;
2613 }
2614 byte_count = params + 1 /* pad */ ;
2615 pSMB->TotalParameterCount = cpu_to_le16(params);
2616 pSMB->ParameterCount = pSMB->TotalParameterCount;
2617 pSMB->hdr.smb_buf_length += byte_count;
2618 pSMB->ByteCount = cpu_to_le16(byte_count);
2619
2620 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
2621 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
2622
2623 if (rc) {
2624 if (rc == -EBADF) {
2625 psrch_inf->endOfSearch = TRUE;
2626 rc = 0; /* search probably was closed at end of search above */
2627 } else
2628 cFYI(1, ("FindNext returned = %d", rc));
2629 } else { /* decode response */
dfb7533b
SF		 2630#ifdef CONFIG_CIFS_STATS
2631 atomic_inc(&tcon->num_fnext);
2632#endif
1da177e4
LT		 2633 rc = validate_t2((struct smb_t2_rsp *)pSMBr);
2634
2635 if(rc == 0) {
2636 /* BB fixme add lock for file (srch_info) struct here */
2637 if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE)
2638 psrch_inf->unicode = TRUE;
2639 else
2640 psrch_inf->unicode = FALSE;
2641 response_data = (char *) &pSMBr->hdr.Protocol +
2642 le16_to_cpu(pSMBr->t2.ParameterOffset);
2643 parms = (T2_FNEXT_RSP_PARMS *)response_data;
2644 response_data = (char *)&pSMBr->hdr.Protocol +
2645 le16_to_cpu(pSMBr->t2.DataOffset);
2646 cifs_buf_release(psrch_inf->ntwrk_buf_start);
2647 psrch_inf->srch_entries_start = response_data;
2648 psrch_inf->ntwrk_buf_start = (char *)pSMB;
2649 if(parms->EndofSearch)
2650 psrch_inf->endOfSearch = TRUE;
2651 else
2652 psrch_inf->endOfSearch = FALSE;
2653
2654 psrch_inf->entries_in_buffer = le16_to_cpu(parms->SearchCount);
2655 psrch_inf->index_of_last_entry +=
2656 psrch_inf->entries_in_buffer;
2657/* cFYI(1,("fnxt2 entries in buf %d index_of_last %d",psrch_inf->entries_in_buffer,psrch_inf->index_of_last_entry)); */
2658
2659 /* BB fixme add unlock here */
2660 }
2661
2662 }
2663
2664 /* BB On error, should we leave previous search buf (and count and
2665 last entry fields) intact or free the previous one? */
2666
2667 /* Note: On -EAGAIN error only caller can retry on handle based calls
2668 since file handle passed in no longer valid */
2669FNext2_err_exit:
2670 if (rc != 0)
2671 cifs_buf_release(pSMB);
2672
2673 return rc;
2674}
2675
2676int
2677CIFSFindClose(const int xid, struct cifsTconInfo *tcon, const __u16 searchHandle)
2678{
2679 int rc = 0;
2680 FINDCLOSE_REQ *pSMB = NULL;
2681 CLOSE_RSP *pSMBr = NULL; /* BB removeme BB */
2682 int bytes_returned;
2683
2684 cFYI(1, ("In CIFSSMBFindClose"));
2685 rc = small_smb_init(SMB_COM_FIND_CLOSE2, 1, tcon, (void **)&pSMB);
2686
2687 /* no sense returning error if session restarted
2688 as file handle has been closed */
2689 if(rc == -EAGAIN)
2690 return 0;
2691 if (rc)
2692 return rc;
2693
2694 pSMBr = (CLOSE_RSP *)pSMB; /* BB removeme BB */
2695 pSMB->FileID = searchHandle;
2696 pSMB->ByteCount = 0;
2697 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
2698 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
2699 if (rc) {
2700 cERROR(1, ("Send error in FindClose = %d", rc));
2701 }
dfb7533b
SF		 2702#ifdef CONFIG_CIFS_STATS
2703 atomic_inc(&tcon->num_fclose);
2704#endif
1da177e4
LT		 2705 cifs_small_buf_release(pSMB);
2706
2707 /* Since session is dead, search handle closed on server already */
2708 if (rc == -EAGAIN)
2709 rc = 0;
2710
2711 return rc;
2712}
2713
2714#ifdef CONFIG_CIFS_EXPERIMENTAL
2715int
2716CIFSGetSrvInodeNumber(const int xid, struct cifsTconInfo *tcon,
2717 const unsigned char *searchName,
2718 __u64 * inode_number,
737b758c 2719 const struct nls_table *nls_codepage, int remap)
1da177e4
LT		 2720{
2721 int rc = 0;
2722 TRANSACTION2_QPI_REQ *pSMB = NULL;
2723 TRANSACTION2_QPI_RSP *pSMBr = NULL;
2724 int name_len, bytes_returned;
2725 __u16 params, byte_count;
2726
2727 cFYI(1,("In GetSrvInodeNum for %s",searchName));
2728 if(tcon == NULL)
2729 return -ENODEV;
2730
2731GetInodeNumberRetry:
2732 rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
2733 (void **) &pSMBr);
2734 if (rc)
2735 return rc;
2736
2737
2738 if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
2739 name_len =
b1a45695 2740 cifsConvertToUCS((__le16 *) pSMB->FileName, searchName,
737b758c 2741 PATH_MAX,nls_codepage, remap);
1da177e4
LT		 2742 name_len++; /* trailing null */
2743 name_len *= 2;
2744 } else { /* BB improve the check for buffer overruns BB */
2745 name_len = strnlen(searchName, PATH_MAX);
2746 name_len++; /* trailing null */
2747 strncpy(pSMB->FileName, searchName, name_len);
2748 }
2749
2750 params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ;
2751 pSMB->TotalDataCount = 0;
2752 pSMB->MaxParameterCount = cpu_to_le16(2);
2753 /* BB find exact max data count below from sess structure BB */
2754 pSMB->MaxDataCount = cpu_to_le16(4000);
2755 pSMB->MaxSetupCount = 0;
2756 pSMB->Reserved = 0;
2757 pSMB->Flags = 0;
2758 pSMB->Timeout = 0;
2759 pSMB->Reserved2 = 0;
2760 pSMB->ParameterOffset = cpu_to_le16(offsetof(
2761 struct smb_com_transaction2_qpi_req ,InformationLevel) - 4);
2762 pSMB->DataCount = 0;
2763 pSMB->DataOffset = 0;
2764 pSMB->SetupCount = 1;
2765 pSMB->Reserved3 = 0;
2766 pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION);
2767 byte_count = params + 1 /* pad */ ;
2768 pSMB->TotalParameterCount = cpu_to_le16(params);
2769 pSMB->ParameterCount = pSMB->TotalParameterCount;
2770 pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_INTERNAL_INFO);
2771 pSMB->Reserved4 = 0;
2772 pSMB->hdr.smb_buf_length += byte_count;
2773 pSMB->ByteCount = cpu_to_le16(byte_count);
2774
2775 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
2776 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
2777 if (rc) {
2778 cFYI(1, ("error %d in QueryInternalInfo", rc));
2779 } else {
2780 /* decode response */
2781 rc = validate_t2((struct smb_t2_rsp *)pSMBr);
2782 if (rc || (pSMBr->ByteCount < 2))
2783 /* BB also check enough total bytes returned */
2784 /* If rc should we check for EOPNOSUPP and
2785 disable the srvino flag? or in caller? */
2786 rc = -EIO; /* bad smb */
2787 else {
2788 __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
2789 __u16 count = le16_to_cpu(pSMBr->t2.DataCount);
2790 struct file_internal_info * pfinfo;
2791 /* BB Do we need a cast or hash here ? */
2792 if(count < 8) {
2793 cFYI(1, ("Illegal size ret in QryIntrnlInf"));
2794 rc = -EIO;
2795 goto GetInodeNumOut;
2796 }
2797 pfinfo = (struct file_internal_info *)
2798 (data_offset + (char *) &pSMBr->hdr.Protocol);
2799 *inode_number = pfinfo->UniqueId;
2800 }
2801 }
2802GetInodeNumOut:
2803 cifs_buf_release(pSMB);
2804 if (rc == -EAGAIN)
2805 goto GetInodeNumberRetry;
2806 return rc;
2807}
2808#endif /* CIFS_EXPERIMENTAL */
2809
2810int
2811CIFSGetDFSRefer(const int xid, struct cifsSesInfo *ses,
2812 const unsigned char *searchName,
2813 unsigned char **targetUNCs,
2814 unsigned int *number_of_UNC_in_array,
737b758c 2815 const struct nls_table *nls_codepage, int remap)
1da177e4
LT		 2816{
2817/* TRANS2_GET_DFS_REFERRAL */
2818 TRANSACTION2_GET_DFS_REFER_REQ *pSMB = NULL;
2819 TRANSACTION2_GET_DFS_REFER_RSP *pSMBr = NULL;
2820 struct dfs_referral_level_3 * referrals = NULL;
2821 int rc = 0;
2822 int bytes_returned;
2823 int name_len;
2824 unsigned int i;
2825 char * temp;
2826 __u16 params, byte_count;
2827 *number_of_UNC_in_array = 0;
2828 *targetUNCs = NULL;
2829
2830 cFYI(1, ("In GetDFSRefer the path %s", searchName));
2831 if (ses == NULL)
2832 return -ENODEV;
2833getDFSRetry:
2834 rc = smb_init(SMB_COM_TRANSACTION2, 15, NULL, (void **) &pSMB,
2835 (void **) &pSMBr);
2836 if (rc)
2837 return rc;
2838
2839 pSMB->hdr.Tid = ses->ipc_tid;
2840 pSMB->hdr.Uid = ses->Suid;
2841 if (ses->capabilities & CAP_STATUS32) {
2842 pSMB->hdr.Flags2 |= SMBFLG2_ERR_STATUS;
2843 }
2844 if (ses->capabilities & CAP_DFS) {
2845 pSMB->hdr.Flags2 |= SMBFLG2_DFS;
2846 }
2847
2848 if (ses->capabilities & CAP_UNICODE) {
2849 pSMB->hdr.Flags2 |= SMBFLG2_UNICODE;
2850 name_len =
b1a45695 2851 cifsConvertToUCS((__le16 *) pSMB->RequestFileName,
737b758c 2852 searchName, PATH_MAX, nls_codepage, remap);
1da177e4
LT		 2853 name_len++; /* trailing null */
2854 name_len *= 2;
2855 } else { /* BB improve the check for buffer overruns BB */
2856 name_len = strnlen(searchName, PATH_MAX);
2857 name_len++; /* trailing null */
2858 strncpy(pSMB->RequestFileName, searchName, name_len);
2859 }
2860
2861 params = 2 /* level */ + name_len /*includes null */ ;
2862 pSMB->TotalDataCount = 0;
2863 pSMB->DataCount = 0;
2864 pSMB->DataOffset = 0;
2865 pSMB->MaxParameterCount = 0;
2866 pSMB->MaxDataCount = cpu_to_le16(4000); /* BB find exact max SMB PDU from sess structure BB */
2867 pSMB->MaxSetupCount = 0;
2868 pSMB->Reserved = 0;
2869 pSMB->Flags = 0;
2870 pSMB->Timeout = 0;
2871 pSMB->Reserved2 = 0;
2872 pSMB->ParameterOffset = cpu_to_le16(offsetof(
2873 struct smb_com_transaction2_get_dfs_refer_req, MaxReferralLevel) - 4);
2874 pSMB->SetupCount = 1;
2875 pSMB->Reserved3 = 0;
2876 pSMB->SubCommand = cpu_to_le16(TRANS2_GET_DFS_REFERRAL);
2877 byte_count = params + 3 /* pad */ ;
2878 pSMB->ParameterCount = cpu_to_le16(params);
2879 pSMB->TotalParameterCount = pSMB->ParameterCount;
2880 pSMB->MaxReferralLevel = cpu_to_le16(3);
2881 pSMB->hdr.smb_buf_length += byte_count;
2882 pSMB->ByteCount = cpu_to_le16(byte_count);
2883
2884 rc = SendReceive(xid, ses, (struct smb_hdr *) pSMB,
2885 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
2886 if (rc) {
2887 cFYI(1, ("Send error in GetDFSRefer = %d", rc));
2888 } else { /* decode response */
2889/* BB Add logic to parse referrals here */
2890 rc = validate_t2((struct smb_t2_rsp *)pSMBr);
2891
2892 if (rc || (pSMBr->ByteCount < 17)) /* BB also check enough total bytes returned */
2893 rc = -EIO; /* bad smb */
2894 else {
2895 __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
2896 __u16 data_count = le16_to_cpu(pSMBr->t2.DataCount);
2897
2898 cFYI(1,
2899 ("Decoding GetDFSRefer response. BCC: %d Offset %d",
2900 pSMBr->ByteCount, data_offset));
2901 referrals =
2902 (struct dfs_referral_level_3 *)
2903 (8 /* sizeof start of data block */ +
2904 data_offset +
2905 (char *) &pSMBr->hdr.Protocol);
2906 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",
2907 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)));
2908 /* BB This field is actually two bytes in from start of
2909 data block so we could do safety check that DataBlock
2910 begins at address of pSMBr->NumberOfReferrals */
2911 *number_of_UNC_in_array = le16_to_cpu(pSMBr->NumberOfReferrals);
2912
2913 /* BB Fix below so can return more than one referral */
2914 if(*number_of_UNC_in_array > 1)
2915 *number_of_UNC_in_array = 1;
2916
2917 /* get the length of the strings describing refs */
2918 name_len = 0;
2919 for(i=0;i<*number_of_UNC_in_array;i++) {
2920 /* make sure that DfsPathOffset not past end */
2921 __u16 offset = le16_to_cpu(referrals->DfsPathOffset);
2922 if (offset > data_count) {
2923 /* if invalid referral, stop here and do
2924 not try to copy any more */
2925 *number_of_UNC_in_array = i;
2926 break;
2927 }
2928 temp = ((char *)referrals) + offset;
2929
2930 if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) {
2931 name_len += UniStrnlen((wchar_t *)temp,data_count);
2932 } else {
2933 name_len += strnlen(temp,data_count);
2934 }
2935 referrals++;
2936 /* BB add check that referral pointer does not fall off end PDU */
2937
2938 }
2939 /* BB add check for name_len bigger than bcc */
2940 *targetUNCs =
2941 kmalloc(name_len+1+ (*number_of_UNC_in_array),GFP_KERNEL);
2942 if(*targetUNCs == NULL) {
2943 rc = -ENOMEM;
2944 goto GetDFSRefExit;
2945 }
2946 /* copy the ref strings */
2947 referrals =
2948 (struct dfs_referral_level_3 *)
2949 (8 /* sizeof data hdr */ +
2950 data_offset +
2951 (char *) &pSMBr->hdr.Protocol);
2952
2953 for(i=0;i<*number_of_UNC_in_array;i++) {
2954 temp = ((char *)referrals) + le16_to_cpu(referrals->DfsPathOffset);
2955 if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) {
2956 cifs_strfromUCS_le(*targetUNCs,
2957 (wchar_t *) temp, name_len, nls_codepage);
2958 } else {
2959 strncpy(*targetUNCs,temp,name_len);
2960 }
2961 /* BB update target_uncs pointers */
2962 referrals++;
2963 }
2964 temp = *targetUNCs;
2965 temp[name_len] = 0;
2966 }
2967
2968 }
2969GetDFSRefExit:
2970 if (pSMB)
2971 cifs_buf_release(pSMB);
2972
2973 if (rc == -EAGAIN)
2974 goto getDFSRetry;
2975
2976 return rc;
2977}
2978
2979int
737b758c 2980CIFSSMBQFSInfo(const int xid, struct cifsTconInfo *tcon, struct kstatfs *FSData)
1da177e4
LT		 2981{
2982/* level 0x103 SMB_QUERY_FILE_SYSTEM_INFO */
2983 TRANSACTION2_QFSI_REQ *pSMB = NULL;
2984 TRANSACTION2_QFSI_RSP *pSMBr = NULL;
2985 FILE_SYSTEM_INFO *response_data;
2986 int rc = 0;
2987 int bytes_returned = 0;
2988 __u16 params, byte_count;
2989
2990 cFYI(1, ("In QFSInfo"));
2991QFSInfoRetry:
2992 rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
2993 (void **) &pSMBr);
2994 if (rc)
2995 return rc;
2996
2997 params = 2; /* level */
2998 pSMB->TotalDataCount = 0;
2999 pSMB->MaxParameterCount = cpu_to_le16(2);
3000 pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find exact max SMB PDU from sess structure BB */
3001 pSMB->MaxSetupCount = 0;
3002 pSMB->Reserved = 0;
3003 pSMB->Flags = 0;
3004 pSMB->Timeout = 0;
3005 pSMB->Reserved2 = 0;
3006 byte_count = params + 1 /* pad */ ;
3007 pSMB->TotalParameterCount = cpu_to_le16(params);
3008 pSMB->ParameterCount = pSMB->TotalParameterCount;
3009 pSMB->ParameterOffset = cpu_to_le16(offsetof(
3010 struct smb_com_transaction2_qfsi_req, InformationLevel) - 4);
3011 pSMB->DataCount = 0;
3012 pSMB->DataOffset = 0;
3013 pSMB->SetupCount = 1;
3014 pSMB->Reserved3 = 0;
3015 pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION);
3016 pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_SIZE_INFO);
3017 pSMB->hdr.smb_buf_length += byte_count;
3018 pSMB->ByteCount = cpu_to_le16(byte_count);
3019
3020 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
3021 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
3022 if (rc) {
3023 cERROR(1, ("Send error in QFSInfo = %d", rc));
3024 } else { /* decode response */
3025 rc = validate_t2((struct smb_t2_rsp *)pSMBr);
3026
3027 if (rc || (pSMBr->ByteCount < 24)) /* BB alsO CHEck enough total bytes returned */
3028 rc = -EIO; /* bad smb */
3029 else {
3030 __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
3031 cFYI(1,
3032 ("Decoding qfsinfo response. BCC: %d Offset %d",
3033 pSMBr->ByteCount, data_offset));
3034
3035 response_data =
3036 (FILE_SYSTEM_INFO
3037 *) (((char *) &pSMBr->hdr.Protocol) +
3038 data_offset);
3039 FSData->f_bsize =
3040 le32_to_cpu(response_data->BytesPerSector) *
3041 le32_to_cpu(response_data->
3042 SectorsPerAllocationUnit);
3043 FSData->f_blocks =
3044 le64_to_cpu(response_data->TotalAllocationUnits);
3045 FSData->f_bfree = FSData->f_bavail =
3046 le64_to_cpu(response_data->FreeAllocationUnits);
3047 cFYI(1,
3048 ("Blocks: %lld Free: %lld Block size %ld",
3049 (unsigned long long)FSData->f_blocks,
3050 (unsigned long long)FSData->f_bfree,
3051 FSData->f_bsize));
3052 }
3053 }
3054 cifs_buf_release(pSMB);
3055
3056 if (rc == -EAGAIN)
3057 goto QFSInfoRetry;
3058
3059 return rc;
3060}
3061
3062int
737b758c 3063CIFSSMBQFSAttributeInfo(const int xid, struct cifsTconInfo *tcon)
1da177e4
LT		 3064{
3065/* level 0x105 SMB_QUERY_FILE_SYSTEM_INFO */
3066 TRANSACTION2_QFSI_REQ *pSMB = NULL;
3067 TRANSACTION2_QFSI_RSP *pSMBr = NULL;
3068 FILE_SYSTEM_ATTRIBUTE_INFO *response_data;
3069 int rc = 0;
3070 int bytes_returned = 0;
3071 __u16 params, byte_count;
3072
3073 cFYI(1, ("In QFSAttributeInfo"));
3074QFSAttributeRetry:
3075 rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
3076 (void **) &pSMBr);
3077 if (rc)
3078 return rc;
3079
3080 params = 2; /* level */
3081 pSMB->TotalDataCount = 0;
3082 pSMB->MaxParameterCount = cpu_to_le16(2);
3083 pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find exact max SMB PDU from sess structure BB */
3084 pSMB->MaxSetupCount = 0;
3085 pSMB->Reserved = 0;
3086 pSMB->Flags = 0;
3087 pSMB->Timeout = 0;
3088 pSMB->Reserved2 = 0;
3089 byte_count = params + 1 /* pad */ ;
3090 pSMB->TotalParameterCount = cpu_to_le16(params);
3091 pSMB->ParameterCount = pSMB->TotalParameterCount;
3092 pSMB->ParameterOffset = cpu_to_le16(offsetof(
3093 struct smb_com_transaction2_qfsi_req, InformationLevel) - 4);
3094 pSMB->DataCount = 0;
3095 pSMB->DataOffset = 0;
3096 pSMB->SetupCount = 1;
3097 pSMB->Reserved3 = 0;
3098 pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION);
3099 pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_ATTRIBUTE_INFO);
3100 pSMB->hdr.smb_buf_length += byte_count;
3101 pSMB->ByteCount = cpu_to_le16(byte_count);
3102
3103 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
3104 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
3105 if (rc) {
3106 cERROR(1, ("Send error in QFSAttributeInfo = %d", rc));
3107 } else { /* decode response */
3108 rc = validate_t2((struct smb_t2_rsp *)pSMBr);
3109
3110 if (rc || (pSMBr->ByteCount < 13)) { /* BB also check enough bytes returned */
3111 rc = -EIO; /* bad smb */
3112 } else {
3113 __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
3114 response_data =
3115 (FILE_SYSTEM_ATTRIBUTE_INFO
3116 *) (((char *) &pSMBr->hdr.Protocol) +
3117 data_offset);
3118 memcpy(&tcon->fsAttrInfo, response_data,
3119 sizeof (FILE_SYSTEM_ATTRIBUTE_INFO));
3120 }
3121 }
3122 cifs_buf_release(pSMB);
3123
3124 if (rc == -EAGAIN)
3125 goto QFSAttributeRetry;
3126
3127 return rc;
3128}
3129
3130int
737b758c 3131CIFSSMBQFSDeviceInfo(const int xid, struct cifsTconInfo *tcon)
1da177e4
LT		 3132{
3133/* level 0x104 SMB_QUERY_FILE_SYSTEM_INFO */
3134 TRANSACTION2_QFSI_REQ *pSMB = NULL;
3135 TRANSACTION2_QFSI_RSP *pSMBr = NULL;
3136 FILE_SYSTEM_DEVICE_INFO *response_data;
3137 int rc = 0;
3138 int bytes_returned = 0;
3139 __u16 params, byte_count;
3140
3141 cFYI(1, ("In QFSDeviceInfo"));
3142QFSDeviceRetry:
3143 rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
3144 (void **) &pSMBr);
3145 if (rc)
3146 return rc;
3147
3148 params = 2; /* level */
3149 pSMB->TotalDataCount = 0;
3150 pSMB->MaxParameterCount = cpu_to_le16(2);
3151 pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find exact max SMB PDU from sess structure BB */
3152 pSMB->MaxSetupCount = 0;
3153 pSMB->Reserved = 0;
3154 pSMB->Flags = 0;
3155 pSMB->Timeout = 0;
3156 pSMB->Reserved2 = 0;
3157 byte_count = params + 1 /* pad */ ;
3158 pSMB->TotalParameterCount = cpu_to_le16(params);
3159 pSMB->ParameterCount = pSMB->TotalParameterCount;
3160 pSMB->ParameterOffset = cpu_to_le16(offsetof(
3161 struct smb_com_transaction2_qfsi_req, InformationLevel) - 4);
3162
3163 pSMB->DataCount = 0;
3164 pSMB->DataOffset = 0;
3165 pSMB->SetupCount = 1;
3166 pSMB->Reserved3 = 0;
3167 pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION);
3168 pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_DEVICE_INFO);
3169 pSMB->hdr.smb_buf_length += byte_count;
3170 pSMB->ByteCount = cpu_to_le16(byte_count);
3171
3172 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
3173 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
3174 if (rc) {
3175 cFYI(1, ("Send error in QFSDeviceInfo = %d", rc));
3176 } else { /* decode response */
3177 rc = validate_t2((struct smb_t2_rsp *)pSMBr);
3178
3179 if (rc || (pSMBr->ByteCount < sizeof (FILE_SYSTEM_DEVICE_INFO)))
3180 rc = -EIO; /* bad smb */
3181 else {
3182 __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
3183 response_data =
737b758c
SF		 3184 (FILE_SYSTEM_DEVICE_INFO *)
3185 (((char *) &pSMBr->hdr.Protocol) +
1da177e4
LT		 3186 data_offset);
3187 memcpy(&tcon->fsDevInfo, response_data,
3188 sizeof (FILE_SYSTEM_DEVICE_INFO));
3189 }
3190 }
3191 cifs_buf_release(pSMB);
3192
3193 if (rc == -EAGAIN)
3194 goto QFSDeviceRetry;
3195
3196 return rc;
3197}
3198
3199int
737b758c 3200CIFSSMBQFSUnixInfo(const int xid, struct cifsTconInfo *tcon)
1da177e4
LT		 3201{
3202/* level 0x200 SMB_QUERY_CIFS_UNIX_INFO */
3203 TRANSACTION2_QFSI_REQ *pSMB = NULL;
3204 TRANSACTION2_QFSI_RSP *pSMBr = NULL;
3205 FILE_SYSTEM_UNIX_INFO *response_data;
3206 int rc = 0;
3207 int bytes_returned = 0;
3208 __u16 params, byte_count;
3209
3210 cFYI(1, ("In QFSUnixInfo"));
3211QFSUnixRetry:
3212 rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
3213 (void **) &pSMBr);
3214 if (rc)
3215 return rc;
3216
3217 params = 2; /* level */
3218 pSMB->TotalDataCount = 0;
3219 pSMB->DataCount = 0;
3220 pSMB->DataOffset = 0;
3221 pSMB->MaxParameterCount = cpu_to_le16(2);
3222 pSMB->MaxDataCount = cpu_to_le16(100); /* BB find exact max SMB PDU from sess structure BB */
3223 pSMB->MaxSetupCount = 0;
3224 pSMB->Reserved = 0;
3225 pSMB->Flags = 0;
3226 pSMB->Timeout = 0;
3227 pSMB->Reserved2 = 0;
3228 byte_count = params + 1 /* pad */ ;
3229 pSMB->ParameterCount = cpu_to_le16(params);
3230 pSMB->TotalParameterCount = pSMB->ParameterCount;
3231 pSMB->ParameterOffset = cpu_to_le16(offsetof(struct
3232 smb_com_transaction2_qfsi_req, InformationLevel) - 4);
3233 pSMB->SetupCount = 1;
3234 pSMB->Reserved3 = 0;
3235 pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION);
3236 pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_CIFS_UNIX_INFO);
3237 pSMB->hdr.smb_buf_length += byte_count;
3238 pSMB->ByteCount = cpu_to_le16(byte_count);
3239
3240 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
3241 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
3242 if (rc) {
3243 cERROR(1, ("Send error in QFSUnixInfo = %d", rc));
3244 } else { /* decode response */
3245 rc = validate_t2((struct smb_t2_rsp *)pSMBr);
3246
3247 if (rc || (pSMBr->ByteCount < 13)) {
3248 rc = -EIO; /* bad smb */
3249 } else {
3250 __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
3251 response_data =
3252 (FILE_SYSTEM_UNIX_INFO
3253 *) (((char *) &pSMBr->hdr.Protocol) +
3254 data_offset);
3255 memcpy(&tcon->fsUnixInfo, response_data,
3256 sizeof (FILE_SYSTEM_UNIX_INFO));
3257 }
3258 }
3259 cifs_buf_release(pSMB);
3260
3261 if (rc == -EAGAIN)
3262 goto QFSUnixRetry;
3263
3264
3265 return rc;
3266}
3267
ac67055e
JA		 3268int
3269CIFSSMBSETFSUnixInfo(const int xid, struct cifsTconInfo *tcon, __u64 cap)
3270{
3271/* level 0x200 SMB_SET_CIFS_UNIX_INFO */
3272 TRANSACTION2_SETFSI_REQ *pSMB = NULL;
3273 TRANSACTION2_SETFSI_RSP *pSMBr = NULL;
3274 int rc = 0;
3275 int bytes_returned = 0;
3276 __u16 params, param_offset, offset, byte_count;
3277
3278 cFYI(1, ("In SETFSUnixInfo"));
3279SETFSUnixRetry:
3280 rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
3281 (void **) &pSMBr);
3282 if (rc)
3283 return rc;
3284
3285 params = 4; /* 2 bytes zero followed by info level. */
3286 pSMB->MaxSetupCount = 0;
3287 pSMB->Reserved = 0;
3288 pSMB->Flags = 0;
3289 pSMB->Timeout = 0;
3290 pSMB->Reserved2 = 0;
3291 param_offset = offsetof(struct smb_com_transaction2_setfsi_req, FileNum) - 4;
3292 offset = param_offset + params;
3293
3294 pSMB->MaxParameterCount = cpu_to_le16(4);
3295 pSMB->MaxDataCount = cpu_to_le16(100); /* BB find exact max SMB PDU from sess structure BB */
3296 pSMB->SetupCount = 1;
3297 pSMB->Reserved3 = 0;
3298 pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FS_INFORMATION);
3299 byte_count = 1 /* pad */ + params + 12;
3300
3301 pSMB->DataCount = cpu_to_le16(12);
3302 pSMB->ParameterCount = cpu_to_le16(params);
3303 pSMB->TotalDataCount = pSMB->DataCount;
3304 pSMB->TotalParameterCount = pSMB->ParameterCount;
3305 pSMB->ParameterOffset = cpu_to_le16(param_offset);
3306 pSMB->DataOffset = cpu_to_le16(offset);
3307
3308 /* Params. */
3309 pSMB->FileNum = 0;
3310 pSMB->InformationLevel = cpu_to_le16(SMB_SET_CIFS_UNIX_INFO);
3311
3312 /* Data. */
3313 pSMB->ClientUnixMajor = cpu_to_le16(CIFS_UNIX_MAJOR_VERSION);
3314 pSMB->ClientUnixMinor = cpu_to_le16(CIFS_UNIX_MINOR_VERSION);
3315 pSMB->ClientUnixCap = cpu_to_le64(cap);
3316
3317 pSMB->hdr.smb_buf_length += byte_count;
3318 pSMB->ByteCount = cpu_to_le16(byte_count);
3319
3320 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
3321 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
3322 if (rc) {
3323 cERROR(1, ("Send error in SETFSUnixInfo = %d", rc));
3324 } else { /* decode response */
3325 rc = validate_t2((struct smb_t2_rsp *)pSMBr);
3326 if (rc) {
3327 rc = -EIO; /* bad smb */
3328 }
3329 }
3330 cifs_buf_release(pSMB);
3331
3332 if (rc == -EAGAIN)
3333 goto SETFSUnixRetry;
3334
3335 return rc;
3336}
3337
3338
1da177e4
LT		 3339
3340int
3341CIFSSMBQFSPosixInfo(const int xid, struct cifsTconInfo *tcon,
737b758c 3342 struct kstatfs *FSData)
1da177e4
LT		 3343{
3344/* level 0x201 SMB_QUERY_CIFS_POSIX_INFO */
3345 TRANSACTION2_QFSI_REQ *pSMB = NULL;
3346 TRANSACTION2_QFSI_RSP *pSMBr = NULL;
3347 FILE_SYSTEM_POSIX_INFO *response_data;
3348 int rc = 0;
3349 int bytes_returned = 0;
3350 __u16 params, byte_count;
3351
3352 cFYI(1, ("In QFSPosixInfo"));
3353QFSPosixRetry:
3354 rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
3355 (void **) &pSMBr);
3356 if (rc)
3357 return rc;
3358
3359 params = 2; /* level */
3360 pSMB->TotalDataCount = 0;
3361 pSMB->DataCount = 0;
3362 pSMB->DataOffset = 0;
3363 pSMB->MaxParameterCount = cpu_to_le16(2);
3364 pSMB->MaxDataCount = cpu_to_le16(100); /* BB find exact max SMB PDU from sess structure BB */
3365 pSMB->MaxSetupCount = 0;
3366 pSMB->Reserved = 0;
3367 pSMB->Flags = 0;
3368 pSMB->Timeout = 0;
3369 pSMB->Reserved2 = 0;
3370 byte_count = params + 1 /* pad */ ;
3371 pSMB->ParameterCount = cpu_to_le16(params);
3372 pSMB->TotalParameterCount = pSMB->ParameterCount;
3373 pSMB->ParameterOffset = cpu_to_le16(offsetof(struct
3374 smb_com_transaction2_qfsi_req, InformationLevel) - 4);
3375 pSMB->SetupCount = 1;
3376 pSMB->Reserved3 = 0;
3377 pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION);
3378 pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_POSIX_FS_INFO);
3379 pSMB->hdr.smb_buf_length += byte_count;
3380 pSMB->ByteCount = cpu_to_le16(byte_count);
3381
3382 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
3383 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
3384 if (rc) {
3385 cFYI(1, ("Send error in QFSUnixInfo = %d", rc));
3386 } else { /* decode response */
3387 rc = validate_t2((struct smb_t2_rsp *)pSMBr);
3388
3389 if (rc || (pSMBr->ByteCount < 13)) {
3390 rc = -EIO; /* bad smb */
3391 } else {
3392 __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
3393 response_data =
3394 (FILE_SYSTEM_POSIX_INFO
3395 *) (((char *) &pSMBr->hdr.Protocol) +
3396 data_offset);
3397 FSData->f_bsize =
3398 le32_to_cpu(response_data->BlockSize);
3399 FSData->f_blocks =
3400 le64_to_cpu(response_data->TotalBlocks);
3401 FSData->f_bfree =
3402 le64_to_cpu(response_data->BlocksAvail);
3403 if(response_data->UserBlocksAvail == -1) {
3404 FSData->f_bavail = FSData->f_bfree;
3405 } else {
3406 FSData->f_bavail =
3407 le64_to_cpu(response_data->UserBlocksAvail);
3408 }
3409 if(response_data->TotalFileNodes != -1)
3410 FSData->f_files =
3411 le64_to_cpu(response_data->TotalFileNodes);
3412 if(response_data->FreeFileNodes != -1)
3413 FSData->f_ffree =
3414 le64_to_cpu(response_data->FreeFileNodes);
3415 }
3416 }
3417 cifs_buf_release(pSMB);
3418
3419 if (rc == -EAGAIN)
3420 goto QFSPosixRetry;
3421
3422 return rc;
3423}
3424
3425
3426/* We can not use write of zero bytes trick to
3427 set file size due to need for large file support. Also note that
3428 this SetPathInfo is preferred to SetFileInfo based method in next
3429 routine which is only needed to work around a sharing violation bug
3430 in Samba which this routine can run into */
3431
3432int
3433CIFSSMBSetEOF(const int xid, struct cifsTconInfo *tcon, const char *fileName,
737b758c
SF		 3434 __u64 size, int SetAllocation,
3435 const struct nls_table *nls_codepage, int remap)
1da177e4
LT		 3436{
3437 struct smb_com_transaction2_spi_req *pSMB = NULL;
3438 struct smb_com_transaction2_spi_rsp *pSMBr = NULL;
3439 struct file_end_of_file_info *parm_data;
3440 int name_len;
3441 int rc = 0;
3442 int bytes_returned = 0;
3443 __u16 params, byte_count, data_count, param_offset, offset;
3444
3445 cFYI(1, ("In SetEOF"));
3446SetEOFRetry:
3447 rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
3448 (void **) &pSMBr);
3449 if (rc)
3450 return rc;
3451
3452 if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
3453 name_len =
b1a45695 3454 cifsConvertToUCS((__le16 *) pSMB->FileName, fileName,
737b758c 3455 PATH_MAX, nls_codepage, remap);
1da177e4
LT		 3456 name_len++; /* trailing null */
3457 name_len *= 2;
3458 } else { /* BB improve the check for buffer overruns BB */
3459 name_len = strnlen(fileName, PATH_MAX);
3460 name_len++; /* trailing null */
3461 strncpy(pSMB->FileName, fileName, name_len);
3462 }
3463 params = 6 + name_len;
3464 data_count = sizeof (struct file_end_of_file_info);
3465 pSMB->MaxParameterCount = cpu_to_le16(2);
3466 pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB size from sess */
3467 pSMB->MaxSetupCount = 0;
3468 pSMB->Reserved = 0;
3469 pSMB->Flags = 0;
3470 pSMB->Timeout = 0;
3471 pSMB->Reserved2 = 0;
3472 param_offset = offsetof(struct smb_com_transaction2_spi_req,
3473 InformationLevel) - 4;
3474 offset = param_offset + params;
3475 if(SetAllocation) {
3476 if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU)
3477 pSMB->InformationLevel =
3478 cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO2);
3479 else
3480 pSMB->InformationLevel =
3481 cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO);
3482 } else /* Set File Size */ {
3483 if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU)
3484 pSMB->InformationLevel =
3485 cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO2);
3486 else
3487 pSMB->InformationLevel =
3488 cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO);
3489 }
3490
3491 parm_data =
3492 (struct file_end_of_file_info *) (((char *) &pSMB->hdr.Protocol) +
3493 offset);
3494 pSMB->ParameterOffset = cpu_to_le16(param_offset);
3495 pSMB->DataOffset = cpu_to_le16(offset);
3496 pSMB->SetupCount = 1;
3497 pSMB->Reserved3 = 0;
3498 pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION);
3499 byte_count = 3 /* pad */ + params + data_count;
3500 pSMB->DataCount = cpu_to_le16(data_count);
3501 pSMB->TotalDataCount = pSMB->DataCount;
3502 pSMB->ParameterCount = cpu_to_le16(params);
3503 pSMB->TotalParameterCount = pSMB->ParameterCount;
3504 pSMB->Reserved4 = 0;
3505 pSMB->hdr.smb_buf_length += byte_count;
3506 parm_data->FileSize = cpu_to_le64(size);
3507 pSMB->ByteCount = cpu_to_le16(byte_count);
3508 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
3509 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
3510 if (rc) {
3511 cFYI(1, ("SetPathInfo (file size) returned %d", rc));
3512 }
3513
3514 cifs_buf_release(pSMB);
3515
3516 if (rc == -EAGAIN)
3517 goto SetEOFRetry;
3518
3519 return rc;
3520}
3521
3522int
3523CIFSSMBSetFileSize(const int xid, struct cifsTconInfo *tcon, __u64 size,
3524 __u16 fid, __u32 pid_of_opener, int SetAllocation)
3525{
3526 struct smb_com_transaction2_sfi_req *pSMB = NULL;
3527 struct smb_com_transaction2_sfi_rsp *pSMBr = NULL;
3528 char *data_offset;
3529 struct file_end_of_file_info *parm_data;
3530 int rc = 0;
3531 int bytes_returned = 0;
3532 __u16 params, param_offset, offset, byte_count, count;
3533
3534 cFYI(1, ("SetFileSize (via SetFileInfo) %lld",
3535 (long long)size));
cd63499c
SF		 3536 rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB);
3537
1da177e4
LT		 3538 if (rc)
3539 return rc;
3540
cd63499c
SF		 3541 pSMBr = (struct smb_com_transaction2_sfi_rsp *)pSMB;
3542
1da177e4
LT		 3543 pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener);
3544 pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16));
3545
3546 params = 6;
3547 pSMB->MaxSetupCount = 0;
3548 pSMB->Reserved = 0;
3549 pSMB->Flags = 0;
3550 pSMB->Timeout = 0;
3551 pSMB->Reserved2 = 0;
3552 param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4;
3553 offset = param_offset + params;
3554
3555 data_offset = (char *) (&pSMB->hdr.Protocol) + offset;
3556
3557 count = sizeof(struct file_end_of_file_info);
3558 pSMB->MaxParameterCount = cpu_to_le16(2);
3559 pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB PDU from sess */
3560 pSMB->SetupCount = 1;
3561 pSMB->Reserved3 = 0;
3562 pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION);
3563 byte_count = 3 /* pad */ + params + count;
3564 pSMB->DataCount = cpu_to_le16(count);
3565 pSMB->ParameterCount = cpu_to_le16(params);
3566 pSMB->TotalDataCount = pSMB->DataCount;
3567 pSMB->TotalParameterCount = pSMB->ParameterCount;
3568 pSMB->ParameterOffset = cpu_to_le16(param_offset);
3569 parm_data =
3570 (struct file_end_of_file_info *) (((char *) &pSMB->hdr.Protocol) +
3571 offset);
3572 pSMB->DataOffset = cpu_to_le16(offset);
3573 parm_data->FileSize = cpu_to_le64(size);
3574 pSMB->Fid = fid;
3575 if(SetAllocation) {
3576 if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU)
3577 pSMB->InformationLevel =
3578 cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO2);
3579 else
3580 pSMB->InformationLevel =
3581 cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO);
3582 } else /* Set File Size */ {
3583 if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU)
3584 pSMB->InformationLevel =
3585 cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO2);
3586 else
3587 pSMB->InformationLevel =
3588 cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO);
3589 }
3590 pSMB->Reserved4 = 0;
3591 pSMB->hdr.smb_buf_length += byte_count;
3592 pSMB->ByteCount = cpu_to_le16(byte_count);
3593 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
3594 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
3595 if (rc) {
3596 cFYI(1,
3597 ("Send error in SetFileInfo (SetFileSize) = %d",
3598 rc));
3599 }
3600
3601 if (pSMB)
cd63499c 3602 cifs_small_buf_release(pSMB);
1da177e4
LT		 3603
3604 /* Note: On -EAGAIN error only caller can retry on handle based calls
3605 since file handle passed in no longer valid */
3606
3607 return rc;
3608}
3609
3610/* Some legacy servers such as NT4 require that the file times be set on
3611 an open handle, rather than by pathname - this is awkward due to
3612 potential access conflicts on the open, but it is unavoidable for these
3613 old servers since the only other choice is to go from 100 nanosecond DCE
3614 time and resort to the original setpathinfo level which takes the ancient
3615 DOS time format with 2 second granularity */
3616int
3617CIFSSMBSetFileTimes(const int xid, struct cifsTconInfo *tcon, const FILE_BASIC_INFO * data,
3618 __u16 fid)
3619{
3620 struct smb_com_transaction2_sfi_req *pSMB = NULL;
3621 struct smb_com_transaction2_sfi_rsp *pSMBr = NULL;
3622 char *data_offset;
3623 int rc = 0;
3624 int bytes_returned = 0;
3625 __u16 params, param_offset, offset, byte_count, count;
3626
3627 cFYI(1, ("Set Times (via SetFileInfo)"));
cd63499c
SF		 3628 rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB);
3629
1da177e4
LT		 3630 if (rc)
3631 return rc;
3632
cd63499c
SF		 3633 pSMBr = (struct smb_com_transaction2_sfi_rsp *)pSMB;
3634
1da177e4
LT		 3635 /* At this point there is no need to override the current pid
3636 with the pid of the opener, but that could change if we someday
3637 use an existing handle (rather than opening one on the fly) */
3638 /* pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener);
3639 pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16));*/
3640
3641 params = 6;
3642 pSMB->MaxSetupCount = 0;
3643 pSMB->Reserved = 0;
3644 pSMB->Flags = 0;
3645 pSMB->Timeout = 0;
3646 pSMB->Reserved2 = 0;
3647 param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4;
3648 offset = param_offset + params;
3649
3650 data_offset = (char *) (&pSMB->hdr.Protocol) + offset;
3651
3652 count = sizeof (FILE_BASIC_INFO);
3653 pSMB->MaxParameterCount = cpu_to_le16(2);
3654 pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB PDU from sess */
3655 pSMB->SetupCount = 1;
3656 pSMB->Reserved3 = 0;
3657 pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION);
3658 byte_count = 3 /* pad */ + params + count;
3659 pSMB->DataCount = cpu_to_le16(count);
3660 pSMB->ParameterCount = cpu_to_le16(params);
3661 pSMB->TotalDataCount = pSMB->DataCount;
3662 pSMB->TotalParameterCount = pSMB->ParameterCount;
3663 pSMB->ParameterOffset = cpu_to_le16(param_offset);
3664 pSMB->DataOffset = cpu_to_le16(offset);
3665 pSMB->Fid = fid;
3666 if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU)
3667 pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO2);
3668 else
3669 pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO);
3670 pSMB->Reserved4 = 0;
3671 pSMB->hdr.smb_buf_length += byte_count;
3672 pSMB->ByteCount = cpu_to_le16(byte_count);
3673 memcpy(data_offset,data,sizeof(FILE_BASIC_INFO));
3674 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
3675 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
3676 if (rc) {
3677 cFYI(1,("Send error in Set Time (SetFileInfo) = %d",rc));
3678 }
3679
cd63499c 3680 cifs_small_buf_release(pSMB);
1da177e4
LT		 3681
3682 /* Note: On -EAGAIN error only caller can retry on handle based calls
3683 since file handle passed in no longer valid */
3684
3685 return rc;
3686}
3687
3688
3689int
3690CIFSSMBSetTimes(const int xid, struct cifsTconInfo *tcon, const char *fileName,
3691 const FILE_BASIC_INFO * data,
737b758c 3692 const struct nls_table *nls_codepage, int remap)
1da177e4
LT		 3693{
3694 TRANSACTION2_SPI_REQ *pSMB = NULL;
3695 TRANSACTION2_SPI_RSP *pSMBr = NULL;
3696 int name_len;
3697 int rc = 0;
3698 int bytes_returned = 0;
3699 char *data_offset;
3700 __u16 params, param_offset, offset, byte_count, count;
3701
3702 cFYI(1, ("In SetTimes"));
3703
3704SetTimesRetry:
3705 rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
3706 (void **) &pSMBr);
3707 if (rc)
3708 return rc;
3709
3710 if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
3711 name_len =
b1a45695 3712 cifsConvertToUCS((__le16 *) pSMB->FileName, fileName,
737b758c 3713 PATH_MAX, nls_codepage, remap);
1da177e4
LT		 3714 name_len++; /* trailing null */
3715 name_len *= 2;
3716 } else { /* BB improve the check for buffer overruns BB */
3717 name_len = strnlen(fileName, PATH_MAX);
3718 name_len++; /* trailing null */
3719 strncpy(pSMB->FileName, fileName, name_len);
3720 }
3721
3722 params = 6 + name_len;
3723 count = sizeof (FILE_BASIC_INFO);
3724 pSMB->MaxParameterCount = cpu_to_le16(2);
3725 pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find exact max SMB PDU from sess structure BB */
3726 pSMB->MaxSetupCount = 0;
3727 pSMB->Reserved = 0;
3728 pSMB->Flags = 0;
3729 pSMB->Timeout = 0;
3730 pSMB->Reserved2 = 0;
3731 param_offset = offsetof(struct smb_com_transaction2_spi_req,
3732 InformationLevel) - 4;
3733 offset = param_offset + params;
3734 data_offset = (char *) (&pSMB->hdr.Protocol) + offset;
3735 pSMB->ParameterOffset = cpu_to_le16(param_offset);
3736 pSMB->DataOffset = cpu_to_le16(offset);
3737 pSMB->SetupCount = 1;
3738 pSMB->Reserved3 = 0;
3739 pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION);
3740 byte_count = 3 /* pad */ + params + count;
3741
3742 pSMB->DataCount = cpu_to_le16(count);
3743 pSMB->ParameterCount = cpu_to_le16(params);
3744 pSMB->TotalDataCount = pSMB->DataCount;
3745 pSMB->TotalParameterCount = pSMB->ParameterCount;
3746 if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU)
3747 pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO2);
3748 else
3749 pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO);
3750 pSMB->Reserved4 = 0;
3751 pSMB->hdr.smb_buf_length += byte_count;
3752 memcpy(data_offset, data, sizeof (FILE_BASIC_INFO));
3753 pSMB->ByteCount = cpu_to_le16(byte_count);
3754 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
3755 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
3756 if (rc) {
3757 cFYI(1, ("SetPathInfo (times) returned %d", rc));
3758 }
3759
3760 cifs_buf_release(pSMB);
3761
3762 if (rc == -EAGAIN)
3763 goto SetTimesRetry;
3764
3765 return rc;
3766}
3767
3768/* Can not be used to set time stamps yet (due to old DOS time format) */
3769/* Can be used to set attributes */
3770#if 0 /* Possibly not needed - since it turns out that strangely NT4 has a bug
3771 handling it anyway and NT4 was what we thought it would be needed for
3772 Do not delete it until we prove whether needed for Win9x though */
3773int
3774CIFSSMBSetAttrLegacy(int xid, struct cifsTconInfo *tcon, char *fileName,
3775 __u16 dos_attrs, const struct nls_table *nls_codepage)
3776{
3777 SETATTR_REQ *pSMB = NULL;
3778 SETATTR_RSP *pSMBr = NULL;
3779 int rc = 0;
3780 int bytes_returned;
3781 int name_len;
3782
3783 cFYI(1, ("In SetAttrLegacy"));
3784
3785SetAttrLgcyRetry:
3786 rc = smb_init(SMB_COM_SETATTR, 8, tcon, (void **) &pSMB,
3787 (void **) &pSMBr);
3788 if (rc)
3789 return rc;
3790
3791 if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
3792 name_len =
b1a45695 3793 ConvertToUCS((__le16 *) pSMB->fileName, fileName,
1da177e4
LT		 3794 PATH_MAX, nls_codepage);
3795 name_len++; /* trailing null */
3796 name_len *= 2;
3797 } else { /* BB improve the check for buffer overruns BB */
3798 name_len = strnlen(fileName, PATH_MAX);
3799 name_len++; /* trailing null */
3800 strncpy(pSMB->fileName, fileName, name_len);
3801 }
3802 pSMB->attr = cpu_to_le16(dos_attrs);
3803 pSMB->BufferFormat = 0x04;
3804 pSMB->hdr.smb_buf_length += name_len + 1;
3805 pSMB->ByteCount = cpu_to_le16(name_len + 1);
3806 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
3807 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
3808 if (rc) {
3809 cFYI(1, ("Error in LegacySetAttr = %d", rc));
3810 }
3811
3812 cifs_buf_release(pSMB);
3813
3814 if (rc == -EAGAIN)
3815 goto SetAttrLgcyRetry;
3816
3817 return rc;
3818}
3819#endif /* temporarily unneeded SetAttr legacy function */
3820
3821int
3822CIFSSMBUnixSetPerms(const int xid, struct cifsTconInfo *tcon,
737b758c
SF		 3823 char *fileName, __u64 mode, __u64 uid, __u64 gid,
3824 dev_t device, const struct nls_table *nls_codepage,
3825 int remap)
1da177e4
LT		 3826{
3827 TRANSACTION2_SPI_REQ *pSMB = NULL;
3828 TRANSACTION2_SPI_RSP *pSMBr = NULL;
3829 int name_len;
3830 int rc = 0;
3831 int bytes_returned = 0;
3832 FILE_UNIX_BASIC_INFO *data_offset;
3833 __u16 params, param_offset, offset, count, byte_count;
3834
3835 cFYI(1, ("In SetUID/GID/Mode"));
3836setPermsRetry:
3837 rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
3838 (void **) &pSMBr);
3839 if (rc)
3840 return rc;
3841
3842 if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
3843 name_len =
b1a45695 3844 cifsConvertToUCS((__le16 *) pSMB->FileName, fileName,
737b758c 3845 PATH_MAX, nls_codepage, remap);
1da177e4
LT		 3846 name_len++; /* trailing null */
3847 name_len *= 2;
3848 } else { /* BB improve the check for buffer overruns BB */
3849 name_len = strnlen(fileName, PATH_MAX);
3850 name_len++; /* trailing null */
3851 strncpy(pSMB->FileName, fileName, name_len);
3852 }
3853
3854 params = 6 + name_len;
3855 count = sizeof (FILE_UNIX_BASIC_INFO);
3856 pSMB->MaxParameterCount = cpu_to_le16(2);
3857 pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find exact max SMB PDU from sess structure BB */
3858 pSMB->MaxSetupCount = 0;
3859 pSMB->Reserved = 0;
3860 pSMB->Flags = 0;
3861 pSMB->Timeout = 0;
3862 pSMB->Reserved2 = 0;
3863 param_offset = offsetof(struct smb_com_transaction2_spi_req,
3864 InformationLevel) - 4;
3865 offset = param_offset + params;
3866 data_offset =
3867 (FILE_UNIX_BASIC_INFO *) ((char *) &pSMB->hdr.Protocol +
3868 offset);
3869 memset(data_offset, 0, count);
3870 pSMB->DataOffset = cpu_to_le16(offset);
3871 pSMB->ParameterOffset = cpu_to_le16(param_offset);
3872 pSMB->SetupCount = 1;
3873 pSMB->Reserved3 = 0;
3874 pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION);
3875 byte_count = 3 /* pad */ + params + count;
3876 pSMB->ParameterCount = cpu_to_le16(params);
3877 pSMB->DataCount = cpu_to_le16(count);
3878 pSMB->TotalParameterCount = pSMB->ParameterCount;
3879 pSMB->TotalDataCount = pSMB->DataCount;
3880 pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_BASIC);
3881 pSMB->Reserved4 = 0;
3882 pSMB->hdr.smb_buf_length += byte_count;
3883 data_offset->Uid = cpu_to_le64(uid);
3884 data_offset->Gid = cpu_to_le64(gid);
3885 /* better to leave device as zero when it is */
3886 data_offset->DevMajor = cpu_to_le64(MAJOR(device));
3887 data_offset->DevMinor = cpu_to_le64(MINOR(device));
3888 data_offset->Permissions = cpu_to_le64(mode);
3889
3890 if(S_ISREG(mode))
3891 data_offset->Type = cpu_to_le32(UNIX_FILE);
3892 else if(S_ISDIR(mode))
3893 data_offset->Type = cpu_to_le32(UNIX_DIR);
3894 else if(S_ISLNK(mode))
3895 data_offset->Type = cpu_to_le32(UNIX_SYMLINK);
3896 else if(S_ISCHR(mode))
3897 data_offset->Type = cpu_to_le32(UNIX_CHARDEV);
3898 else if(S_ISBLK(mode))
3899 data_offset->Type = cpu_to_le32(UNIX_BLOCKDEV);
3900 else if(S_ISFIFO(mode))
3901 data_offset->Type = cpu_to_le32(UNIX_FIFO);
3902 else if(S_ISSOCK(mode))
3903 data_offset->Type = cpu_to_le32(UNIX_SOCKET);
3904
3905
3906 pSMB->ByteCount = cpu_to_le16(byte_count);
3907 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
3908 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
3909 if (rc) {
3910 cFYI(1, ("SetPathInfo (perms) returned %d", rc));
3911 }
3912
3913 if (pSMB)
3914 cifs_buf_release(pSMB);
3915 if (rc == -EAGAIN)
3916 goto setPermsRetry;
3917 return rc;
3918}
3919
3920int CIFSSMBNotify(const int xid, struct cifsTconInfo *tcon,
3921 const int notify_subdirs, const __u16 netfid,
3922 __u32 filter, const struct nls_table *nls_codepage)
3923{
3924 int rc = 0;
3925 struct smb_com_transaction_change_notify_req * pSMB = NULL;
3926 struct smb_com_transaction_change_notify_rsp * pSMBr = NULL;
3927 int bytes_returned;
3928
3929 cFYI(1, ("In CIFSSMBNotify for file handle %d",(int)netfid));
3930 rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB,
3931 (void **) &pSMBr);
3932 if (rc)
3933 return rc;
3934
3935 pSMB->TotalParameterCount = 0 ;
3936 pSMB->TotalDataCount = 0;
3937 pSMB->MaxParameterCount = cpu_to_le32(2);
3938 /* BB find exact data count max from sess structure BB */
3939 pSMB->MaxDataCount = 0; /* same in little endian or be */
3940 pSMB->MaxSetupCount = 4;
3941 pSMB->Reserved = 0;
3942 pSMB->ParameterOffset = 0;
3943 pSMB->DataCount = 0;
3944 pSMB->DataOffset = 0;
3945 pSMB->SetupCount = 4; /* single byte does not need le conversion */
3946 pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_NOTIFY_CHANGE);
3947 pSMB->ParameterCount = pSMB->TotalParameterCount;
3948 if(notify_subdirs)
3949 pSMB->WatchTree = 1; /* one byte - no le conversion needed */
3950 pSMB->Reserved2 = 0;
3951 pSMB->CompletionFilter = cpu_to_le32(filter);
3952 pSMB->Fid = netfid; /* file handle always le */
3953 pSMB->ByteCount = 0;
3954
3955 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
3956 (struct smb_hdr *) pSMBr, &bytes_returned, -1);
3957 if (rc) {
3958 cFYI(1, ("Error in Notify = %d", rc));
3959 }
3960 cifs_buf_release(pSMB);
3961 return rc;
3962}
3963#ifdef CONFIG_CIFS_XATTR
3964ssize_t
3965CIFSSMBQAllEAs(const int xid, struct cifsTconInfo *tcon,
3966 const unsigned char *searchName,
3967 char * EAData, size_t buf_size,
737b758c 3968 const struct nls_table *nls_codepage, int remap)
1da177e4
LT		 3969{
3970 /* BB assumes one setup word */
3971 TRANSACTION2_QPI_REQ *pSMB = NULL;
3972 TRANSACTION2_QPI_RSP *pSMBr = NULL;
3973 int rc = 0;
3974 int bytes_returned;
3975 int name_len;
3976 struct fea * temp_fea;
3977 char * temp_ptr;
3978 __u16 params, byte_count;
3979
3980 cFYI(1, ("In Query All EAs path %s", searchName));
3981QAllEAsRetry:
3982 rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
3983 (void **) &pSMBr);
3984 if (rc)
3985 return rc;
3986
3987 if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
3988 name_len =
b1a45695 3989 cifsConvertToUCS((__le16 *) pSMB->FileName, searchName,
737b758c 3990 PATH_MAX, nls_codepage, remap);
1da177e4
LT		 3991 name_len++; /* trailing null */
3992 name_len *= 2;
3993 } else { /* BB improve the check for buffer overruns BB */
3994 name_len = strnlen(searchName, PATH_MAX);
3995 name_len++; /* trailing null */
3996 strncpy(pSMB->FileName, searchName, name_len);
3997 }
3998
3999 params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */ ;
4000 pSMB->TotalDataCount = 0;
4001 pSMB->MaxParameterCount = cpu_to_le16(2);
4002 pSMB->MaxDataCount = cpu_to_le16(4000); /* BB find exact max SMB PDU from sess structure BB */
4003 pSMB->MaxSetupCount = 0;
4004 pSMB->Reserved = 0;
4005 pSMB->Flags = 0;
4006 pSMB->Timeout = 0;
4007 pSMB->Reserved2 = 0;
4008 pSMB->ParameterOffset = cpu_to_le16(offsetof(
4009 struct smb_com_transaction2_qpi_req ,InformationLevel) - 4);
4010 pSMB->DataCount = 0;
4011 pSMB->DataOffset = 0;
4012 pSMB->SetupCount = 1;
4013 pSMB->Reserved3 = 0;
4014 pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION);
4015 byte_count = params + 1 /* pad */ ;
4016 pSMB->TotalParameterCount = cpu_to_le16(params);
4017 pSMB->ParameterCount = pSMB->TotalParameterCount;
4018 pSMB->InformationLevel = cpu_to_le16(SMB_INFO_QUERY_ALL_EAS);
4019 pSMB->Reserved4 = 0;
4020 pSMB->hdr.smb_buf_length += byte_count;
4021 pSMB->ByteCount = cpu_to_le16(byte_count);
4022
4023 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
4024 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
4025 if (rc) {
4026 cFYI(1, ("Send error in QueryAllEAs = %d", rc));
4027 } else { /* decode response */
4028 rc = validate_t2((struct smb_t2_rsp *)pSMBr);
4029
4030 /* BB also check enough total bytes returned */
4031 /* BB we need to improve the validity checking
4032 of these trans2 responses */
4033 if (rc || (pSMBr->ByteCount < 4))
4034 rc = -EIO; /* bad smb */
4035 /* else if (pFindData){
4036 memcpy((char *) pFindData,
4037 (char *) &pSMBr->hdr.Protocol +
4038 data_offset, kl);
4039 }*/ else {
4040 /* check that length of list is not more than bcc */
4041 /* check that each entry does not go beyond length
4042 of list */
4043 /* check that each element of each entry does not
4044 go beyond end of list */
4045 __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
4046 struct fealist * ea_response_data;
4047 rc = 0;
4048 /* validate_trans2_offsets() */
4049 /* BB to check if(start of smb + data_offset > &bcc+ bcc)*/
4050 ea_response_data = (struct fealist *)
4051 (((char *) &pSMBr->hdr.Protocol) +
4052 data_offset);
4053 name_len = le32_to_cpu(ea_response_data->list_len);
4054 cFYI(1,("ea length %d", name_len));
4055 if(name_len <= 8) {
4056 /* returned EA size zeroed at top of function */
4057 cFYI(1,("empty EA list returned from server"));
4058 } else {
4059 /* account for ea list len */
4060 name_len -= 4;
4061 temp_fea = ea_response_data->list;
4062 temp_ptr = (char *)temp_fea;
4063 while(name_len > 0) {
4064 __u16 value_len;
4065 name_len -= 4;
4066 temp_ptr += 4;
4067 rc += temp_fea->name_len;
4068 /* account for prefix user. and trailing null */
4069 rc = rc + 5 + 1;
4070 if(rc<(int)buf_size) {
4071 memcpy(EAData,"user.",5);
4072 EAData+=5;
4073 memcpy(EAData,temp_ptr,temp_fea->name_len);
4074 EAData+=temp_fea->name_len;
4075 /* null terminate name */
4076 *EAData = 0;
4077 EAData = EAData + 1;
4078 } else if(buf_size == 0) {
4079 /* skip copy - calc size only */
4080 } else {
4081 /* stop before overrun buffer */
4082 rc = -ERANGE;
4083 break;
4084 }
4085 name_len -= temp_fea->name_len;
4086 temp_ptr += temp_fea->name_len;
4087 /* account for trailing null */
4088 name_len--;
4089 temp_ptr++;
4090 value_len = le16_to_cpu(temp_fea->value_len);
4091 name_len -= value_len;
4092 temp_ptr += value_len;
4093 /* BB check that temp_ptr is still within smb BB*/
4094 /* no trailing null to account for in value len */
4095 /* go on to next EA */
4096 temp_fea = (struct fea *)temp_ptr;
4097 }
4098 }
4099 }
4100 }
4101 if (pSMB)
4102 cifs_buf_release(pSMB);
4103 if (rc == -EAGAIN)
4104 goto QAllEAsRetry;
4105
4106 return (ssize_t)rc;
4107}
4108
4109ssize_t CIFSSMBQueryEA(const int xid,struct cifsTconInfo * tcon,
4110 const unsigned char * searchName,const unsigned char * ea_name,
4111 unsigned char * ea_value, size_t buf_size,
737b758c 4112 const struct nls_table *nls_codepage, int remap)
1da177e4
LT		 4113{
4114 TRANSACTION2_QPI_REQ *pSMB = NULL;
4115 TRANSACTION2_QPI_RSP *pSMBr = NULL;
4116 int rc = 0;
4117 int bytes_returned;
4118 int name_len;
4119 struct fea * temp_fea;
4120 char * temp_ptr;
4121 __u16 params, byte_count;
4122
4123 cFYI(1, ("In Query EA path %s", searchName));
4124QEARetry:
4125 rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
4126 (void **) &pSMBr);
4127 if (rc)
4128 return rc;
4129
4130 if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
4131 name_len =
b1a45695 4132 cifsConvertToUCS((__le16 *) pSMB->FileName, searchName,
737b758c 4133 PATH_MAX, nls_codepage, remap);
1da177e4
LT		 4134 name_len++; /* trailing null */
4135 name_len *= 2;
4136 } else { /* BB improve the check for buffer overruns BB */
4137 name_len = strnlen(searchName, PATH_MAX);
4138 name_len++; /* trailing null */
4139 strncpy(pSMB->FileName, searchName, name_len);
4140 }
4141
4142 params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */ ;
4143 pSMB->TotalDataCount = 0;
4144 pSMB->MaxParameterCount = cpu_to_le16(2);
4145 pSMB->MaxDataCount = cpu_to_le16(4000); /* BB find exact max SMB PDU from sess structure BB */
4146 pSMB->MaxSetupCount = 0;
4147 pSMB->Reserved = 0;
4148 pSMB->Flags = 0;
4149 pSMB->Timeout = 0;
4150 pSMB->Reserved2 = 0;
4151 pSMB->ParameterOffset = cpu_to_le16(offsetof(
4152 struct smb_com_transaction2_qpi_req ,InformationLevel) - 4);
4153 pSMB->DataCount = 0;
4154 pSMB->DataOffset = 0;
4155 pSMB->SetupCount = 1;
4156 pSMB->Reserved3 = 0;
4157 pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION);
4158 byte_count = params + 1 /* pad */ ;
4159 pSMB->TotalParameterCount = cpu_to_le16(params);
4160 pSMB->ParameterCount = pSMB->TotalParameterCount;
4161 pSMB->InformationLevel = cpu_to_le16(SMB_INFO_QUERY_ALL_EAS);
4162 pSMB->Reserved4 = 0;
4163 pSMB->hdr.smb_buf_length += byte_count;
4164 pSMB->ByteCount = cpu_to_le16(byte_count);
4165
4166 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
4167 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
4168 if (rc) {
4169 cFYI(1, ("Send error in Query EA = %d", rc));
4170 } else { /* decode response */
4171 rc = validate_t2((struct smb_t2_rsp *)pSMBr);
4172
4173 /* BB also check enough total bytes returned */
4174 /* BB we need to improve the validity checking
4175 of these trans2 responses */
4176 if (rc || (pSMBr->ByteCount < 4))
4177 rc = -EIO; /* bad smb */
4178 /* else if (pFindData){
4179 memcpy((char *) pFindData,
4180 (char *) &pSMBr->hdr.Protocol +
4181 data_offset, kl);
4182 }*/ else {
4183 /* check that length of list is not more than bcc */
4184 /* check that each entry does not go beyond length
4185 of list */
4186 /* check that each element of each entry does not
4187 go beyond end of list */
4188 __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
4189 struct fealist * ea_response_data;
4190 rc = -ENODATA;
4191 /* validate_trans2_offsets() */
4192 /* BB to check if(start of smb + data_offset > &bcc+ bcc)*/
4193 ea_response_data = (struct fealist *)
4194 (((char *) &pSMBr->hdr.Protocol) +
4195 data_offset);
4196 name_len = le32_to_cpu(ea_response_data->list_len);
4197 cFYI(1,("ea length %d", name_len));
4198 if(name_len <= 8) {
4199 /* returned EA size zeroed at top of function */
4200 cFYI(1,("empty EA list returned from server"));
4201 } else {
4202 /* account for ea list len */
4203 name_len -= 4;
4204 temp_fea = ea_response_data->list;
4205 temp_ptr = (char *)temp_fea;
4206 /* loop through checking if we have a matching
4207 name and then return the associated value */
4208 while(name_len > 0) {
4209 __u16 value_len;
4210 name_len -= 4;
4211 temp_ptr += 4;
4212 value_len = le16_to_cpu(temp_fea->value_len);
4213 /* BB validate that value_len falls within SMB,
4214 even though maximum for name_len is 255 */
4215 if(memcmp(temp_fea->name,ea_name,
4216 temp_fea->name_len) == 0) {
4217 /* found a match */
4218 rc = value_len;
4219 /* account for prefix user. and trailing null */
4220 if(rc<=(int)buf_size) {
4221 memcpy(ea_value,
4222 temp_fea->name+temp_fea->name_len+1,
4223 rc);
4224 /* ea values, unlike ea names,
4225 are not null terminated */
4226 } else if(buf_size == 0) {
4227 /* skip copy - calc size only */
4228 } else {
4229 /* stop before overrun buffer */
4230 rc = -ERANGE;
4231 }
4232 break;
4233 }
4234 name_len -= temp_fea->name_len;
4235 temp_ptr += temp_fea->name_len;
4236 /* account for trailing null */
4237 name_len--;
4238 temp_ptr++;
4239 name_len -= value_len;
4240 temp_ptr += value_len;
4241 /* no trailing null to account for in value len */
4242 /* go on to next EA */
4243 temp_fea = (struct fea *)temp_ptr;
4244 }
4245 }
4246 }
4247 }
4248 if (pSMB)
4249 cifs_buf_release(pSMB);
4250 if (rc == -EAGAIN)
4251 goto QEARetry;
4252
4253 return (ssize_t)rc;
4254}
4255
4256int
4257CIFSSMBSetEA(const int xid, struct cifsTconInfo *tcon, const char *fileName,
4258 const char * ea_name, const void * ea_value,
737b758c
SF		 4259 const __u16 ea_value_len, const struct nls_table *nls_codepage,
4260 int remap)
1da177e4
LT		 4261{
4262 struct smb_com_transaction2_spi_req *pSMB = NULL;
4263 struct smb_com_transaction2_spi_rsp *pSMBr = NULL;
4264 struct fealist *parm_data;
4265 int name_len;
4266 int rc = 0;
4267 int bytes_returned = 0;
4268 __u16 params, param_offset, byte_count, offset, count;
4269
4270 cFYI(1, ("In SetEA"));
4271SetEARetry:
4272 rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
4273 (void **) &pSMBr);
4274 if (rc)
4275 return rc;
4276
4277 if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
4278 name_len =
b1a45695 4279 cifsConvertToUCS((__le16 *) pSMB->FileName, fileName,
737b758c 4280 PATH_MAX, nls_codepage, remap);
1da177e4
LT		 4281 name_len++; /* trailing null */
4282 name_len *= 2;
4283 } else { /* BB improve the check for buffer overruns BB */
4284 name_len = strnlen(fileName, PATH_MAX);
4285 name_len++; /* trailing null */
4286 strncpy(pSMB->FileName, fileName, name_len);
4287 }
4288
4289 params = 6 + name_len;
4290
4291 /* done calculating parms using name_len of file name,
4292 now use name_len to calculate length of ea name
4293 we are going to create in the inode xattrs */
4294 if(ea_name == NULL)
4295 name_len = 0;
4296 else
4297 name_len = strnlen(ea_name,255);
4298
4299 count = sizeof(*parm_data) + ea_value_len + name_len + 1;
4300 pSMB->MaxParameterCount = cpu_to_le16(2);
4301 pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB size from sess */
4302 pSMB->MaxSetupCount = 0;
4303 pSMB->Reserved = 0;
4304 pSMB->Flags = 0;
4305 pSMB->Timeout = 0;
4306 pSMB->Reserved2 = 0;
4307 param_offset = offsetof(struct smb_com_transaction2_spi_req,
4308 InformationLevel) - 4;
4309 offset = param_offset + params;
4310 pSMB->InformationLevel =
4311 cpu_to_le16(SMB_SET_FILE_EA);
4312
4313 parm_data =
4314 (struct fealist *) (((char *) &pSMB->hdr.Protocol) +
4315 offset);
4316 pSMB->ParameterOffset = cpu_to_le16(param_offset);
4317 pSMB->DataOffset = cpu_to_le16(offset);
4318 pSMB->SetupCount = 1;
4319 pSMB->Reserved3 = 0;
4320 pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION);
4321 byte_count = 3 /* pad */ + params + count;
4322 pSMB->DataCount = cpu_to_le16(count);
4323 parm_data->list_len = cpu_to_le32(count);
4324 parm_data->list[0].EA_flags = 0;
4325 /* we checked above that name len is less than 255 */
4326 parm_data->list[0].name_len = (__u8)name_len;;
4327 /* EA names are always ASCII */
4328 if(ea_name)
4329 strncpy(parm_data->list[0].name,ea_name,name_len);
4330 parm_data->list[0].name[name_len] = 0;
4331 parm_data->list[0].value_len = cpu_to_le16(ea_value_len);
4332 /* caller ensures that ea_value_len is less than 64K but
4333 we need to ensure that it fits within the smb */
4334
4335 /*BB add length check that it would fit in negotiated SMB buffer size BB */
4336 /* if(ea_value_len > buffer_size - 512 (enough for header)) */
4337 if(ea_value_len)
4338 memcpy(parm_data->list[0].name+name_len+1,ea_value,ea_value_len);
4339
4340 pSMB->TotalDataCount = pSMB->DataCount;
4341 pSMB->ParameterCount = cpu_to_le16(params);
4342 pSMB->TotalParameterCount = pSMB->ParameterCount;
4343 pSMB->Reserved4 = 0;
4344 pSMB->hdr.smb_buf_length += byte_count;
4345 pSMB->ByteCount = cpu_to_le16(byte_count);
4346 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
4347 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
4348 if (rc) {
4349 cFYI(1, ("SetPathInfo (EA) returned %d", rc));
4350 }
4351
4352 cifs_buf_release(pSMB);
4353
4354 if (rc == -EAGAIN)
4355 goto SetEARetry;
4356
4357 return rc;
4358}
4359
4360#endif
kernel source for telekom puls (alcatel/mediatek)