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30#include <linux/fs.h>
31#include <linux/kernel.h>
32#include <linux/vfs.h>
33#include <linux/slab.h>
34#include <linux/posix_acl_xattr.h>
35#include <linux/pagemap.h>
36#include <linux/swap.h>
37#include <linux/task_io_accounting_ops.h>
38#include <asm/uaccess.h>
39#include "cifspdu.h"
40#include "cifsglob.h"
41#include "cifsacl.h"
42#include "cifsproto.h"
43#include "cifs_unicode.h"
44#include "cifs_debug.h"
45#include "fscache.h"
46
47#ifdef CONFIG_CIFS_POSIX
48static struct {
49 int index;
50 char *name;
51} protocols[] = {
52#ifdef CONFIG_CIFS_WEAK_PW_HASH
53 {LANMAN_PROT, "\2LM1.2X002"},
54 {LANMAN2_PROT, "\2LANMAN2.1"},
55#endif
56 {CIFS_PROT, "\2NT LM 0.12"},
57 {POSIX_PROT, "\2POSIX 2"},
58 {BAD_PROT, "\2"}
59};
60#else
61static struct {
62 int index;
63 char *name;
64} protocols[] = {
65#ifdef CONFIG_CIFS_WEAK_PW_HASH
66 {LANMAN_PROT, "\2LM1.2X002"},
67 {LANMAN2_PROT, "\2LANMAN2.1"},
68#endif
69 {CIFS_PROT, "\2NT LM 0.12"},
70 {BAD_PROT, "\2"}
71};
72#endif
73
74
75#ifdef CONFIG_CIFS_POSIX
76#ifdef CONFIG_CIFS_WEAK_PW_HASH
77#define CIFS_NUM_PROT 4
78#else
79#define CIFS_NUM_PROT 2
80#endif
81#else
82#ifdef CONFIG_CIFS_WEAK_PW_HASH
83#define CIFS_NUM_PROT 3
84#else
85#define CIFS_NUM_PROT 1
86#endif
87#endif
88
89#ifdef CONFIG_HIGHMEM
90
91
92
93
94
95
96
97static DEFINE_MUTEX(cifs_kmap_mutex);
98
99static inline void
100cifs_kmap_lock(void)
101{
102 mutex_lock(&cifs_kmap_mutex);
103}
104
105static inline void
106cifs_kmap_unlock(void)
107{
108 mutex_unlock(&cifs_kmap_mutex);
109}
110#else
111#define cifs_kmap_lock() do { ; } while(0)
112#define cifs_kmap_unlock() do { ; } while(0)
113#endif
114
115
116
117static void mark_open_files_invalid(struct cifs_tcon *pTcon)
118{
119 struct cifsFileInfo *open_file = NULL;
120 struct list_head *tmp;
121 struct list_head *tmp1;
122
123
124 spin_lock(&cifs_file_list_lock);
125 list_for_each_safe(tmp, tmp1, &pTcon->openFileList) {
126 open_file = list_entry(tmp, struct cifsFileInfo, tlist);
127 open_file->invalidHandle = true;
128 open_file->oplock_break_cancelled = true;
129 }
130 spin_unlock(&cifs_file_list_lock);
131
132
133}
134
135
136static int
137cifs_reconnect_tcon(struct cifs_tcon *tcon, int smb_command)
138{
139 int rc;
140 struct cifs_ses *ses;
141 struct TCP_Server_Info *server;
142 struct nls_table *nls_codepage;
143
144
145
146
147
148
149 if (!tcon)
150 return 0;
151
152 ses = tcon->ses;
153 server = ses->server;
154
155
156
157
158
159 if (tcon->tidStatus == CifsExiting) {
160 if (smb_command != SMB_COM_WRITE_ANDX &&
161 smb_command != SMB_COM_OPEN_ANDX &&
162 smb_command != SMB_COM_TREE_DISCONNECT) {
163 cFYI(1, "can not send cmd %d while umounting",
164 smb_command);
165 return -ENODEV;
166 }
167 }
168
169
170
171
172
173 while (server->tcpStatus == CifsNeedReconnect) {
174 wait_event_interruptible_timeout(server->response_q,
175 (server->tcpStatus != CifsNeedReconnect), 10 * HZ);
176
177
178 if (server->tcpStatus != CifsNeedReconnect)
179 break;
180
181
182
183
184
185
186 if (!tcon->retry) {
187 cFYI(1, "gave up waiting on reconnect in smb_init");
188 return -EHOSTDOWN;
189 }
190 }
191
192 if (!ses->need_reconnect && !tcon->need_reconnect)
193 return 0;
194
195 nls_codepage = load_nls_default();
196
197
198
199
200
201 mutex_lock(&ses->session_mutex);
202 rc = cifs_negotiate_protocol(0, ses);
203 if (rc == 0 && ses->need_reconnect)
204 rc = cifs_setup_session(0, ses, nls_codepage);
205
206
207 if (rc || !tcon->need_reconnect) {
208 mutex_unlock(&ses->session_mutex);
209 goto out;
210 }
211
212 mark_open_files_invalid(tcon);
213 rc = CIFSTCon(0, ses, tcon->treeName, tcon, nls_codepage);
214 mutex_unlock(&ses->session_mutex);
215 cFYI(1, "reconnect tcon rc = %d", rc);
216
217 if (rc)
218 goto out;
219
220
221
222
223
224 atomic_inc(&tconInfoReconnectCount);
225
226
227 if (ses->capabilities & CAP_UNIX)
228 reset_cifs_unix_caps(0, tcon, NULL, NULL);
229
230
231
232
233
234
235
236
237out:
238
239
240
241
242 switch (smb_command) {
243 case SMB_COM_READ_ANDX:
244 case SMB_COM_WRITE_ANDX:
245 case SMB_COM_CLOSE:
246 case SMB_COM_FIND_CLOSE2:
247 case SMB_COM_LOCKING_ANDX:
248 rc = -EAGAIN;
249 }
250
251 unload_nls(nls_codepage);
252 return rc;
253}
254
255
256
257
258static int
259small_smb_init(int smb_command, int wct, struct cifs_tcon *tcon,
260 void **request_buf)
261{
262 int rc;
263
264 rc = cifs_reconnect_tcon(tcon, smb_command);
265 if (rc)
266 return rc;
267
268 *request_buf = cifs_small_buf_get();
269 if (*request_buf == NULL) {
270
271 return -ENOMEM;
272 }
273
274 header_assemble((struct smb_hdr *) *request_buf, smb_command,
275 tcon, wct);
276
277 if (tcon != NULL)
278 cifs_stats_inc(&tcon->num_smbs_sent);
279
280 return 0;
281}
282
283int
284small_smb_init_no_tc(const int smb_command, const int wct,
285 struct cifs_ses *ses, void **request_buf)
286{
287 int rc;
288 struct smb_hdr *buffer;
289
290 rc = small_smb_init(smb_command, wct, NULL, request_buf);
291 if (rc)
292 return rc;
293
294 buffer = (struct smb_hdr *)*request_buf;
295 buffer->Mid = get_next_mid(ses->server);
296 if (ses->capabilities & CAP_UNICODE)
297 buffer->Flags2 |= SMBFLG2_UNICODE;
298 if (ses->capabilities & CAP_STATUS32)
299 buffer->Flags2 |= SMBFLG2_ERR_STATUS;
300
301
302
303
304
305
306 return rc;
307}
308
309
310static int
311__smb_init(int smb_command, int wct, struct cifs_tcon *tcon,
312 void **request_buf, void **response_buf)
313{
314 *request_buf = cifs_buf_get();
315 if (*request_buf == NULL) {
316
317 return -ENOMEM;
318 }
319
320
321
322
323 if (response_buf)
324 *response_buf = *request_buf;
325
326 header_assemble((struct smb_hdr *) *request_buf, smb_command, tcon,
327 wct);
328
329 if (tcon != NULL)
330 cifs_stats_inc(&tcon->num_smbs_sent);
331
332 return 0;
333}
334
335
336static int
337smb_init(int smb_command, int wct, struct cifs_tcon *tcon,
338 void **request_buf, void **response_buf)
339{
340 int rc;
341
342 rc = cifs_reconnect_tcon(tcon, smb_command);
343 if (rc)
344 return rc;
345
346 return __smb_init(smb_command, wct, tcon, request_buf, response_buf);
347}
348
349static int
350smb_init_no_reconnect(int smb_command, int wct, struct cifs_tcon *tcon,
351 void **request_buf, void **response_buf)
352{
353 if (tcon->ses->need_reconnect || tcon->need_reconnect)
354 return -EHOSTDOWN;
355
356 return __smb_init(smb_command, wct, tcon, request_buf, response_buf);
357}
358
359static int validate_t2(struct smb_t2_rsp *pSMB)
360{
361 unsigned int total_size;
362
363
364 if (pSMB->hdr.WordCount < 10)
365 goto vt2_err;
366
367
368 if (get_unaligned_le16(&pSMB->t2_rsp.ParameterOffset) > 1024 ||
369 get_unaligned_le16(&pSMB->t2_rsp.DataOffset) > 1024)
370 goto vt2_err;
371
372 total_size = get_unaligned_le16(&pSMB->t2_rsp.ParameterCount);
373 if (total_size >= 512)
374 goto vt2_err;
375
376
377
378
379 total_size += get_unaligned_le16(&pSMB->t2_rsp.DataCount);
380 if (total_size > get_bcc(&pSMB->hdr) ||
381 total_size >= CIFSMaxBufSize + MAX_CIFS_HDR_SIZE)
382 goto vt2_err;
383
384 return 0;
385vt2_err:
386 cifs_dump_mem("Invalid transact2 SMB: ", (char *)pSMB,
387 sizeof(struct smb_t2_rsp) + 16);
388 return -EINVAL;
389}
390
391static inline void inc_rfc1001_len(void *pSMB, int count)
392{
393 struct smb_hdr *hdr = (struct smb_hdr *)pSMB;
394
395 be32_add_cpu(&hdr->smb_buf_length, count);
396}
397
398int
399CIFSSMBNegotiate(unsigned int xid, struct cifs_ses *ses)
400{
401 NEGOTIATE_REQ *pSMB;
402 NEGOTIATE_RSP *pSMBr;
403 int rc = 0;
404 int bytes_returned;
405 int i;
406 struct TCP_Server_Info *server;
407 u16 count;
408 unsigned int secFlags;
409
410 if (ses->server)
411 server = ses->server;
412 else {
413 rc = -EIO;
414 return rc;
415 }
416 rc = smb_init(SMB_COM_NEGOTIATE, 0, NULL ,
417 (void **) &pSMB, (void **) &pSMBr);
418 if (rc)
419 return rc;
420
421
422 if (ses->overrideSecFlg & (~(CIFSSEC_MUST_SIGN | CIFSSEC_MUST_SEAL)))
423 secFlags = ses->overrideSecFlg;
424 else
425 secFlags = global_secflags | ses->overrideSecFlg;
426
427 cFYI(1, "secFlags 0x%x", secFlags);
428
429 pSMB->hdr.Mid = get_next_mid(server);
430 pSMB->hdr.Flags2 |= (SMBFLG2_UNICODE | SMBFLG2_ERR_STATUS);
431
432 if ((secFlags & CIFSSEC_MUST_KRB5) == CIFSSEC_MUST_KRB5)
433 pSMB->hdr.Flags2 |= SMBFLG2_EXT_SEC;
434 else if ((secFlags & CIFSSEC_AUTH_MASK) == CIFSSEC_MAY_KRB5) {
435 cFYI(1, "Kerberos only mechanism, enable extended security");
436 pSMB->hdr.Flags2 |= SMBFLG2_EXT_SEC;
437 } else if ((secFlags & CIFSSEC_MUST_NTLMSSP) == CIFSSEC_MUST_NTLMSSP)
438 pSMB->hdr.Flags2 |= SMBFLG2_EXT_SEC;
439 else if ((secFlags & CIFSSEC_AUTH_MASK) == CIFSSEC_MAY_NTLMSSP) {
440 cFYI(1, "NTLMSSP only mechanism, enable extended security");
441 pSMB->hdr.Flags2 |= SMBFLG2_EXT_SEC;
442 }
443
444 count = 0;
445 for (i = 0; i < CIFS_NUM_PROT; i++) {
446 strncpy(pSMB->DialectsArray+count, protocols[i].name, 16);
447 count += strlen(protocols[i].name) + 1;
448
449 }
450 inc_rfc1001_len(pSMB, count);
451 pSMB->ByteCount = cpu_to_le16(count);
452
453 rc = SendReceive(xid, ses, (struct smb_hdr *) pSMB,
454 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
455 if (rc != 0)
456 goto neg_err_exit;
457
458 server->dialect = le16_to_cpu(pSMBr->DialectIndex);
459 cFYI(1, "Dialect: %d", server->dialect);
460
461 if ((pSMBr->hdr.WordCount < 13) || (server->dialect == BAD_PROT)) {
462
463
464
465 rc = -EOPNOTSUPP;
466 goto neg_err_exit;
467#ifdef CONFIG_CIFS_WEAK_PW_HASH
468 } else if ((pSMBr->hdr.WordCount == 13)
469 && ((server->dialect == LANMAN_PROT)
470 || (server->dialect == LANMAN2_PROT))) {
471 __s16 tmp;
472 struct lanman_neg_rsp *rsp = (struct lanman_neg_rsp *)pSMBr;
473
474 if ((secFlags & CIFSSEC_MAY_LANMAN) ||
475 (secFlags & CIFSSEC_MAY_PLNTXT))
476 server->secType = LANMAN;
477 else {
478 cERROR(1, "mount failed weak security disabled"
479 " in /proc/fs/cifs/SecurityFlags");
480 rc = -EOPNOTSUPP;
481 goto neg_err_exit;
482 }
483 server->sec_mode = (__u8)le16_to_cpu(rsp->SecurityMode);
484 server->maxReq = min_t(unsigned int,
485 le16_to_cpu(rsp->MaxMpxCount),
486 cifs_max_pending);
487 set_credits(server, server->maxReq);
488 server->maxBuf = le16_to_cpu(rsp->MaxBufSize);
489 server->max_vcs = le16_to_cpu(rsp->MaxNumberVcs);
490
491
492 if ((le16_to_cpu(rsp->RawMode) & RAW_ENABLE) == RAW_ENABLE) {
493 server->max_rw = 0xFF00;
494 server->capabilities = CAP_MPX_MODE | CAP_RAW_MODE;
495 } else {
496 server->max_rw = 0;
497 server->capabilities = CAP_MPX_MODE;
498 }
499 tmp = (__s16)le16_to_cpu(rsp->ServerTimeZone);
500 if (tmp == -1) {
501
502
503
504
505
506
507
508 int val, seconds, remain, result;
509 struct timespec ts, utc;
510 utc = CURRENT_TIME;
511 ts = cnvrtDosUnixTm(rsp->SrvTime.Date,
512 rsp->SrvTime.Time, 0);
513 cFYI(1, "SrvTime %d sec since 1970 (utc: %d) diff: %d",
514 (int)ts.tv_sec, (int)utc.tv_sec,
515 (int)(utc.tv_sec - ts.tv_sec));
516 val = (int)(utc.tv_sec - ts.tv_sec);
517 seconds = abs(val);
518 result = (seconds / MIN_TZ_ADJ) * MIN_TZ_ADJ;
519 remain = seconds % MIN_TZ_ADJ;
520 if (remain >= (MIN_TZ_ADJ / 2))
521 result += MIN_TZ_ADJ;
522 if (val < 0)
523 result = -result;
524 server->timeAdj = result;
525 } else {
526 server->timeAdj = (int)tmp;
527 server->timeAdj *= 60;
528 }
529 cFYI(1, "server->timeAdj: %d seconds", server->timeAdj);
530
531
532
533
534
535 if (rsp->EncryptionKeyLength ==
536 cpu_to_le16(CIFS_CRYPTO_KEY_SIZE)) {
537 memcpy(ses->server->cryptkey, rsp->EncryptionKey,
538 CIFS_CRYPTO_KEY_SIZE);
539 } else if (server->sec_mode & SECMODE_PW_ENCRYPT) {
540 rc = -EIO;
541 goto neg_err_exit;
542 }
543
544 cFYI(1, "LANMAN negotiated");
545
546
547 goto signing_check;
548#else
549 } else if (pSMBr->hdr.WordCount == 13) {
550 cERROR(1, "mount failed, cifs module not built "
551 "with CIFS_WEAK_PW_HASH support");
552 rc = -EOPNOTSUPP;
553#endif
554 goto neg_err_exit;
555 } else if (pSMBr->hdr.WordCount != 17) {
556
557 rc = -EOPNOTSUPP;
558 goto neg_err_exit;
559 }
560
561 server->sec_mode = pSMBr->SecurityMode;
562 if ((server->sec_mode & SECMODE_USER) == 0)
563 cFYI(1, "share mode security");
564
565 if ((server->sec_mode & SECMODE_PW_ENCRYPT) == 0)
566#ifdef CONFIG_CIFS_WEAK_PW_HASH
567 if ((secFlags & CIFSSEC_MAY_PLNTXT) == 0)
568#endif
569 cERROR(1, "Server requests plain text password"
570 " but client support disabled");
571
572 if ((secFlags & CIFSSEC_MUST_NTLMV2) == CIFSSEC_MUST_NTLMV2)
573 server->secType = NTLMv2;
574 else if (secFlags & CIFSSEC_MAY_NTLM)
575 server->secType = NTLM;
576 else if (secFlags & CIFSSEC_MAY_NTLMV2)
577 server->secType = NTLMv2;
578 else if (secFlags & CIFSSEC_MAY_KRB5)
579 server->secType = Kerberos;
580 else if (secFlags & CIFSSEC_MAY_NTLMSSP)
581 server->secType = RawNTLMSSP;
582 else if (secFlags & CIFSSEC_MAY_LANMAN)
583 server->secType = LANMAN;
584 else {
585 rc = -EOPNOTSUPP;
586 cERROR(1, "Invalid security type");
587 goto neg_err_exit;
588 }
589
590
591
592
593 server->maxReq = min_t(unsigned int, le16_to_cpu(pSMBr->MaxMpxCount),
594 cifs_max_pending);
595 set_credits(server, server->maxReq);
596
597 server->maxBuf = le32_to_cpu(pSMBr->MaxBufferSize);
598 server->max_rw = le32_to_cpu(pSMBr->MaxRawSize);
599 cFYI(DBG2, "Max buf = %d", ses->server->maxBuf);
600 server->capabilities = le32_to_cpu(pSMBr->Capabilities);
601 server->timeAdj = (int)(__s16)le16_to_cpu(pSMBr->ServerTimeZone);
602 server->timeAdj *= 60;
603 if (pSMBr->EncryptionKeyLength == CIFS_CRYPTO_KEY_SIZE) {
604 memcpy(ses->server->cryptkey, pSMBr->u.EncryptionKey,
605 CIFS_CRYPTO_KEY_SIZE);
606 } else if ((pSMBr->hdr.Flags2 & SMBFLG2_EXT_SEC ||
607 server->capabilities & CAP_EXTENDED_SECURITY) &&
608 (pSMBr->EncryptionKeyLength == 0)) {
609
610 count = get_bcc(&pSMBr->hdr);
611 if (count < 16) {
612 rc = -EIO;
613 goto neg_err_exit;
614 }
615 spin_lock(&cifs_tcp_ses_lock);
616 if (server->srv_count > 1) {
617 spin_unlock(&cifs_tcp_ses_lock);
618 if (memcmp(server->server_GUID,
619 pSMBr->u.extended_response.
620 GUID, 16) != 0) {
621 cFYI(1, "server UID changed");
622 memcpy(server->server_GUID,
623 pSMBr->u.extended_response.GUID,
624 16);
625 }
626 } else {
627 spin_unlock(&cifs_tcp_ses_lock);
628 memcpy(server->server_GUID,
629 pSMBr->u.extended_response.GUID, 16);
630 }
631
632 if (count == 16) {
633 server->secType = RawNTLMSSP;
634 } else {
635 rc = decode_negTokenInit(pSMBr->u.extended_response.
636 SecurityBlob, count - 16,
637 server);
638 if (rc == 1)
639 rc = 0;
640 else
641 rc = -EINVAL;
642 if (server->secType == Kerberos) {
643 if (!server->sec_kerberos &&
644 !server->sec_mskerberos)
645 rc = -EOPNOTSUPP;
646 } else if (server->secType == RawNTLMSSP) {
647 if (!server->sec_ntlmssp)
648 rc = -EOPNOTSUPP;
649 } else
650 rc = -EOPNOTSUPP;
651 }
652 } else if (server->sec_mode & SECMODE_PW_ENCRYPT) {
653 rc = -EIO;
654 goto neg_err_exit;
655 } else
656 server->capabilities &= ~CAP_EXTENDED_SECURITY;
657
658#ifdef CONFIG_CIFS_WEAK_PW_HASH
659signing_check:
660#endif
661 if ((secFlags & CIFSSEC_MAY_SIGN) == 0) {
662
663
664 cFYI(1, "Signing disabled");
665 if (server->sec_mode & SECMODE_SIGN_REQUIRED) {
666 cERROR(1, "Server requires "
667 "packet signing to be enabled in "
668 "/proc/fs/cifs/SecurityFlags.");
669 rc = -EOPNOTSUPP;
670 }
671 server->sec_mode &=
672 ~(SECMODE_SIGN_ENABLED | SECMODE_SIGN_REQUIRED);
673 } else if ((secFlags & CIFSSEC_MUST_SIGN) == CIFSSEC_MUST_SIGN) {
674
675 cFYI(1, "Must sign - secFlags 0x%x", secFlags);
676 if ((server->sec_mode &
677 (SECMODE_SIGN_ENABLED | SECMODE_SIGN_REQUIRED)) == 0) {
678 cERROR(1, "signing required but server lacks support");
679 rc = -EOPNOTSUPP;
680 } else
681 server->sec_mode |= SECMODE_SIGN_REQUIRED;
682 } else {
683
684 if ((server->sec_mode & SECMODE_SIGN_REQUIRED) == 0)
685 server->sec_mode &=
686 ~(SECMODE_SIGN_ENABLED | SECMODE_SIGN_REQUIRED);
687 }
688
689neg_err_exit:
690 cifs_buf_release(pSMB);
691
692 cFYI(1, "negprot rc %d", rc);
693 return rc;
694}
695
696int
697CIFSSMBTDis(const int xid, struct cifs_tcon *tcon)
698{
699 struct smb_hdr *smb_buffer;
700 int rc = 0;
701
702 cFYI(1, "In tree disconnect");
703
704
705 if ((tcon->ses == NULL) || (tcon->ses->server == NULL))
706 return -EIO;
707
708
709
710
711
712
713
714 if ((tcon->need_reconnect) || (tcon->ses->need_reconnect))
715 return 0;
716
717 rc = small_smb_init(SMB_COM_TREE_DISCONNECT, 0, tcon,
718 (void **)&smb_buffer);
719 if (rc)
720 return rc;
721
722 rc = SendReceiveNoRsp(xid, tcon->ses, (char *)smb_buffer, 0);
723 if (rc)
724 cFYI(1, "Tree disconnect failed %d", rc);
725
726
727
728 if (rc == -EAGAIN)
729 rc = 0;
730
731 return rc;
732}
733
734
735
736
737
738
739
740
741static void
742cifs_echo_callback(struct mid_q_entry *mid)
743{
744 struct TCP_Server_Info *server = mid->callback_data;
745
746 DeleteMidQEntry(mid);
747 add_credits(server, 1);
748}
749
750int
751CIFSSMBEcho(struct TCP_Server_Info *server)
752{
753 ECHO_REQ *smb;
754 int rc = 0;
755 struct kvec iov;
756
757 cFYI(1, "In echo request");
758
759 rc = small_smb_init(SMB_COM_ECHO, 0, NULL, (void **)&smb);
760 if (rc)
761 return rc;
762
763
764 smb->hdr.Tid = 0xffff;
765 smb->hdr.WordCount = 1;
766 put_unaligned_le16(1, &smb->EchoCount);
767 put_bcc(1, &smb->hdr);
768 smb->Data[0] = 'a';
769 inc_rfc1001_len(smb, 3);
770 iov.iov_base = smb;
771 iov.iov_len = be32_to_cpu(smb->hdr.smb_buf_length) + 4;
772
773 rc = cifs_call_async(server, &iov, 1, NULL, cifs_echo_callback,
774 server, true);
775 if (rc)
776 cFYI(1, "Echo request failed: %d", rc);
777
778 cifs_small_buf_release(smb);
779
780 return rc;
781}
782
783int
784CIFSSMBLogoff(const int xid, struct cifs_ses *ses)
785{
786 LOGOFF_ANDX_REQ *pSMB;
787 int rc = 0;
788
789 cFYI(1, "In SMBLogoff for session disconnect");
790
791
792
793
794
795
796 if (!ses || !ses->server)
797 return -EIO;
798
799 mutex_lock(&ses->session_mutex);
800 if (ses->need_reconnect)
801 goto session_already_dead;
802
803 rc = small_smb_init(SMB_COM_LOGOFF_ANDX, 2, NULL, (void **)&pSMB);
804 if (rc) {
805 mutex_unlock(&ses->session_mutex);
806 return rc;
807 }
808
809 pSMB->hdr.Mid = get_next_mid(ses->server);
810
811 if (ses->server->sec_mode &
812 (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED))
813 pSMB->hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE;
814
815 pSMB->hdr.Uid = ses->Suid;
816
817 pSMB->AndXCommand = 0xFF;
818 rc = SendReceiveNoRsp(xid, ses, (char *) pSMB, 0);
819session_already_dead:
820 mutex_unlock(&ses->session_mutex);
821
822
823
824
825 if (rc == -EAGAIN)
826 rc = 0;
827 return rc;
828}
829
830int
831CIFSPOSIXDelFile(const int xid, struct cifs_tcon *tcon, const char *fileName,
832 __u16 type, const struct nls_table *nls_codepage, int remap)
833{
834 TRANSACTION2_SPI_REQ *pSMB = NULL;
835 TRANSACTION2_SPI_RSP *pSMBr = NULL;
836 struct unlink_psx_rq *pRqD;
837 int name_len;
838 int rc = 0;
839 int bytes_returned = 0;
840 __u16 params, param_offset, offset, byte_count;
841
842 cFYI(1, "In POSIX delete");
843PsxDelete:
844 rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
845 (void **) &pSMBr);
846 if (rc)
847 return rc;
848
849 if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
850 name_len =
851 cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName,
852 PATH_MAX, nls_codepage, remap);
853 name_len++;
854 name_len *= 2;
855 } else {
856 name_len = strnlen(fileName, PATH_MAX);
857 name_len++;
858 strncpy(pSMB->FileName, fileName, name_len);
859 }
860
861 params = 6 + name_len;
862 pSMB->MaxParameterCount = cpu_to_le16(2);
863 pSMB->MaxDataCount = 0;
864 pSMB->MaxSetupCount = 0;
865 pSMB->Reserved = 0;
866 pSMB->Flags = 0;
867 pSMB->Timeout = 0;
868 pSMB->Reserved2 = 0;
869 param_offset = offsetof(struct smb_com_transaction2_spi_req,
870 InformationLevel) - 4;
871 offset = param_offset + params;
872
873
874 pRqD = (struct unlink_psx_rq *)(((char *)&pSMB->hdr.Protocol) + offset);
875 pRqD->type = cpu_to_le16(type);
876 pSMB->ParameterOffset = cpu_to_le16(param_offset);
877 pSMB->DataOffset = cpu_to_le16(offset);
878 pSMB->SetupCount = 1;
879 pSMB->Reserved3 = 0;
880 pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION);
881 byte_count = 3 + params + sizeof(struct unlink_psx_rq);
882
883 pSMB->DataCount = cpu_to_le16(sizeof(struct unlink_psx_rq));
884 pSMB->TotalDataCount = cpu_to_le16(sizeof(struct unlink_psx_rq));
885 pSMB->ParameterCount = cpu_to_le16(params);
886 pSMB->TotalParameterCount = pSMB->ParameterCount;
887 pSMB->InformationLevel = cpu_to_le16(SMB_POSIX_UNLINK);
888 pSMB->Reserved4 = 0;
889 inc_rfc1001_len(pSMB, byte_count);
890 pSMB->ByteCount = cpu_to_le16(byte_count);
891 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
892 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
893 if (rc)
894 cFYI(1, "Posix delete returned %d", rc);
895 cifs_buf_release(pSMB);
896
897 cifs_stats_inc(&tcon->num_deletes);
898
899 if (rc == -EAGAIN)
900 goto PsxDelete;
901
902 return rc;
903}
904
905int
906CIFSSMBDelFile(const int xid, struct cifs_tcon *tcon, const char *fileName,
907 const struct nls_table *nls_codepage, int remap)
908{
909 DELETE_FILE_REQ *pSMB = NULL;
910 DELETE_FILE_RSP *pSMBr = NULL;
911 int rc = 0;
912 int bytes_returned;
913 int name_len;
914
915DelFileRetry:
916 rc = smb_init(SMB_COM_DELETE, 1, tcon, (void **) &pSMB,
917 (void **) &pSMBr);
918 if (rc)
919 return rc;
920
921 if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
922 name_len =
923 cifsConvertToUTF16((__le16 *) pSMB->fileName, fileName,
924 PATH_MAX, nls_codepage, remap);
925 name_len++;
926 name_len *= 2;
927 } else {
928 name_len = strnlen(fileName, PATH_MAX);
929 name_len++;
930 strncpy(pSMB->fileName, fileName, name_len);
931 }
932 pSMB->SearchAttributes =
933 cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM);
934 pSMB->BufferFormat = 0x04;
935 inc_rfc1001_len(pSMB, name_len + 1);
936 pSMB->ByteCount = cpu_to_le16(name_len + 1);
937 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
938 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
939 cifs_stats_inc(&tcon->num_deletes);
940 if (rc)
941 cFYI(1, "Error in RMFile = %d", rc);
942
943 cifs_buf_release(pSMB);
944 if (rc == -EAGAIN)
945 goto DelFileRetry;
946
947 return rc;
948}
949
950int
951CIFSSMBRmDir(const int xid, struct cifs_tcon *tcon, const char *dirName,
952 const struct nls_table *nls_codepage, int remap)
953{
954 DELETE_DIRECTORY_REQ *pSMB = NULL;
955 DELETE_DIRECTORY_RSP *pSMBr = NULL;
956 int rc = 0;
957 int bytes_returned;
958 int name_len;
959
960 cFYI(1, "In CIFSSMBRmDir");
961RmDirRetry:
962 rc = smb_init(SMB_COM_DELETE_DIRECTORY, 0, tcon, (void **) &pSMB,
963 (void **) &pSMBr);
964 if (rc)
965 return rc;
966
967 if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
968 name_len = cifsConvertToUTF16((__le16 *) pSMB->DirName, dirName,
969 PATH_MAX, nls_codepage, remap);
970 name_len++;
971 name_len *= 2;
972 } else {
973 name_len = strnlen(dirName, PATH_MAX);
974 name_len++;
975 strncpy(pSMB->DirName, dirName, name_len);
976 }
977
978 pSMB->BufferFormat = 0x04;
979 inc_rfc1001_len(pSMB, name_len + 1);
980 pSMB->ByteCount = cpu_to_le16(name_len + 1);
981 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
982 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
983 cifs_stats_inc(&tcon->num_rmdirs);
984 if (rc)
985 cFYI(1, "Error in RMDir = %d", rc);
986
987 cifs_buf_release(pSMB);
988 if (rc == -EAGAIN)
989 goto RmDirRetry;
990 return rc;
991}
992
993int
994CIFSSMBMkDir(const int xid, struct cifs_tcon *tcon,
995 const char *name, const struct nls_table *nls_codepage, int remap)
996{
997 int rc = 0;
998 CREATE_DIRECTORY_REQ *pSMB = NULL;
999 CREATE_DIRECTORY_RSP *pSMBr = NULL;
1000 int bytes_returned;
1001 int name_len;
1002
1003 cFYI(1, "In CIFSSMBMkDir");
1004MkDirRetry:
1005 rc = smb_init(SMB_COM_CREATE_DIRECTORY, 0, tcon, (void **) &pSMB,
1006 (void **) &pSMBr);
1007 if (rc)
1008 return rc;
1009
1010 if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
1011 name_len = cifsConvertToUTF16((__le16 *) pSMB->DirName, name,
1012 PATH_MAX, nls_codepage, remap);
1013 name_len++;
1014 name_len *= 2;
1015 } else {
1016 name_len = strnlen(name, PATH_MAX);
1017 name_len++;
1018 strncpy(pSMB->DirName, name, name_len);
1019 }
1020
1021 pSMB->BufferFormat = 0x04;
1022 inc_rfc1001_len(pSMB, name_len + 1);
1023 pSMB->ByteCount = cpu_to_le16(name_len + 1);
1024 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
1025 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
1026 cifs_stats_inc(&tcon->num_mkdirs);
1027 if (rc)
1028 cFYI(1, "Error in Mkdir = %d", rc);
1029
1030 cifs_buf_release(pSMB);
1031 if (rc == -EAGAIN)
1032 goto MkDirRetry;
1033 return rc;
1034}
1035
1036int
1037CIFSPOSIXCreate(const int xid, struct cifs_tcon *tcon, __u32 posix_flags,
1038 __u64 mode, __u16 *netfid, FILE_UNIX_BASIC_INFO *pRetData,
1039 __u32 *pOplock, const char *name,
1040 const struct nls_table *nls_codepage, int remap)
1041{
1042 TRANSACTION2_SPI_REQ *pSMB = NULL;
1043 TRANSACTION2_SPI_RSP *pSMBr = NULL;
1044 int name_len;
1045 int rc = 0;
1046 int bytes_returned = 0;
1047 __u16 params, param_offset, offset, byte_count, count;
1048 OPEN_PSX_REQ *pdata;
1049 OPEN_PSX_RSP *psx_rsp;
1050
1051 cFYI(1, "In POSIX Create");
1052PsxCreat:
1053 rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
1054 (void **) &pSMBr);
1055 if (rc)
1056 return rc;
1057
1058 if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
1059 name_len =
1060 cifsConvertToUTF16((__le16 *) pSMB->FileName, name,
1061 PATH_MAX, nls_codepage, remap);
1062 name_len++;
1063 name_len *= 2;
1064 } else {
1065 name_len = strnlen(name, PATH_MAX);
1066 name_len++;
1067 strncpy(pSMB->FileName, name, name_len);
1068 }
1069
1070 params = 6 + name_len;
1071 count = sizeof(OPEN_PSX_REQ);
1072 pSMB->MaxParameterCount = cpu_to_le16(2);
1073 pSMB->MaxDataCount = cpu_to_le16(1000);
1074 pSMB->MaxSetupCount = 0;
1075 pSMB->Reserved = 0;
1076 pSMB->Flags = 0;
1077 pSMB->Timeout = 0;
1078 pSMB->Reserved2 = 0;
1079 param_offset = offsetof(struct smb_com_transaction2_spi_req,
1080 InformationLevel) - 4;
1081 offset = param_offset + params;
1082 pdata = (OPEN_PSX_REQ *)(((char *)&pSMB->hdr.Protocol) + offset);
1083 pdata->Level = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC);
1084 pdata->Permissions = cpu_to_le64(mode);
1085 pdata->PosixOpenFlags = cpu_to_le32(posix_flags);
1086 pdata->OpenFlags = cpu_to_le32(*pOplock);
1087 pSMB->ParameterOffset = cpu_to_le16(param_offset);
1088 pSMB->DataOffset = cpu_to_le16(offset);
1089 pSMB->SetupCount = 1;
1090 pSMB->Reserved3 = 0;
1091 pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION);
1092 byte_count = 3 + params + count;
1093
1094 pSMB->DataCount = cpu_to_le16(count);
1095 pSMB->ParameterCount = cpu_to_le16(params);
1096 pSMB->TotalDataCount = pSMB->DataCount;
1097 pSMB->TotalParameterCount = pSMB->ParameterCount;
1098 pSMB->InformationLevel = cpu_to_le16(SMB_POSIX_OPEN);
1099 pSMB->Reserved4 = 0;
1100 inc_rfc1001_len(pSMB, byte_count);
1101 pSMB->ByteCount = cpu_to_le16(byte_count);
1102 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
1103 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
1104 if (rc) {
1105 cFYI(1, "Posix create returned %d", rc);
1106 goto psx_create_err;
1107 }
1108
1109 cFYI(1, "copying inode info");
1110 rc = validate_t2((struct smb_t2_rsp *)pSMBr);
1111
1112 if (rc || get_bcc(&pSMBr->hdr) < sizeof(OPEN_PSX_RSP)) {
1113 rc = -EIO;
1114 goto psx_create_err;
1115 }
1116
1117
1118 psx_rsp = (OPEN_PSX_RSP *)((char *) &pSMBr->hdr.Protocol
1119 + le16_to_cpu(pSMBr->t2.DataOffset));
1120
1121 *pOplock = le16_to_cpu(psx_rsp->OplockFlags);
1122 if (netfid)
1123 *netfid = psx_rsp->Fid;
1124
1125
1126 if (cpu_to_le32(FILE_CREATE) == psx_rsp->CreateAction)
1127 *pOplock |= CIFS_CREATE_ACTION;
1128
1129 if (psx_rsp->ReturnedLevel != cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC)) {
1130 pRetData->Type = cpu_to_le32(-1);
1131 cFYI(DBG2, "unknown type");
1132 } else {
1133 if (get_bcc(&pSMBr->hdr) < sizeof(OPEN_PSX_RSP)
1134 + sizeof(FILE_UNIX_BASIC_INFO)) {
1135 cERROR(1, "Open response data too small");
1136 pRetData->Type = cpu_to_le32(-1);
1137 goto psx_create_err;
1138 }
1139 memcpy((char *) pRetData,
1140 (char *)psx_rsp + sizeof(OPEN_PSX_RSP),
1141 sizeof(FILE_UNIX_BASIC_INFO));
1142 }
1143
1144psx_create_err:
1145 cifs_buf_release(pSMB);
1146
1147 if (posix_flags & SMB_O_DIRECTORY)
1148 cifs_stats_inc(&tcon->num_posixmkdirs);
1149 else
1150 cifs_stats_inc(&tcon->num_posixopens);
1151
1152 if (rc == -EAGAIN)
1153 goto PsxCreat;
1154
1155 return rc;
1156}
1157
1158static __u16 convert_disposition(int disposition)
1159{
1160 __u16 ofun = 0;
1161
1162 switch (disposition) {
1163 case FILE_SUPERSEDE:
1164 ofun = SMBOPEN_OCREATE | SMBOPEN_OTRUNC;
1165 break;
1166 case FILE_OPEN:
1167 ofun = SMBOPEN_OAPPEND;
1168 break;
1169 case FILE_CREATE:
1170 ofun = SMBOPEN_OCREATE;
1171 break;
1172 case FILE_OPEN_IF:
1173 ofun = SMBOPEN_OCREATE | SMBOPEN_OAPPEND;
1174 break;
1175 case FILE_OVERWRITE:
1176 ofun = SMBOPEN_OTRUNC;
1177 break;
1178 case FILE_OVERWRITE_IF:
1179 ofun = SMBOPEN_OCREATE | SMBOPEN_OTRUNC;
1180 break;
1181 default:
1182 cFYI(1, "unknown disposition %d", disposition);
1183 ofun = SMBOPEN_OAPPEND;
1184 }
1185 return ofun;
1186}
1187
1188static int
1189access_flags_to_smbopen_mode(const int access_flags)
1190{
1191 int masked_flags = access_flags & (GENERIC_READ | GENERIC_WRITE);
1192
1193 if (masked_flags == GENERIC_READ)
1194 return SMBOPEN_READ;
1195 else if (masked_flags == GENERIC_WRITE)
1196 return SMBOPEN_WRITE;
1197
1198
1199 return SMBOPEN_READWRITE;
1200}
1201
1202int
1203SMBLegacyOpen(const int xid, struct cifs_tcon *tcon,
1204 const char *fileName, const int openDisposition,
1205 const int access_flags, const int create_options, __u16 *netfid,
1206 int *pOplock, FILE_ALL_INFO *pfile_info,
1207 const struct nls_table *nls_codepage, int remap)
1208{
1209 int rc = -EACCES;
1210 OPENX_REQ *pSMB = NULL;
1211 OPENX_RSP *pSMBr = NULL;
1212 int bytes_returned;
1213 int name_len;
1214 __u16 count;
1215
1216OldOpenRetry:
1217 rc = smb_init(SMB_COM_OPEN_ANDX, 15, tcon, (void **) &pSMB,
1218 (void **) &pSMBr);
1219 if (rc)
1220 return rc;
1221
1222 pSMB->AndXCommand = 0xFF;
1223
1224 if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
1225 count = 1;
1226 name_len =
1227 cifsConvertToUTF16((__le16 *) (pSMB->fileName + 1),
1228 fileName, PATH_MAX, nls_codepage, remap);
1229 name_len++;
1230 name_len *= 2;
1231 } else {
1232 count = 0;
1233 name_len = strnlen(fileName, PATH_MAX);
1234 name_len++;
1235 strncpy(pSMB->fileName, fileName, name_len);
1236 }
1237 if (*pOplock & REQ_OPLOCK)
1238 pSMB->OpenFlags = cpu_to_le16(REQ_OPLOCK);
1239 else if (*pOplock & REQ_BATCHOPLOCK)
1240 pSMB->OpenFlags = cpu_to_le16(REQ_BATCHOPLOCK);
1241
1242 pSMB->OpenFlags |= cpu_to_le16(REQ_MORE_INFO);
1243 pSMB->Mode = cpu_to_le16(access_flags_to_smbopen_mode(access_flags));
1244 pSMB->Mode |= cpu_to_le16(0x40);
1245
1246
1247
1248
1249 if (create_options & CREATE_OPTION_SPECIAL)
1250 pSMB->FileAttributes = cpu_to_le16(ATTR_SYSTEM);
1251 else
1252 pSMB->FileAttributes = cpu_to_le16(0);
1253
1254 if (create_options & CREATE_OPTION_READONLY)
1255 pSMB->FileAttributes |= cpu_to_le16(ATTR_READONLY);
1256
1257
1258
1259
1260
1261
1262 pSMB->Sattr = cpu_to_le16(ATTR_HIDDEN | ATTR_SYSTEM | ATTR_DIRECTORY);
1263 pSMB->OpenFunction = cpu_to_le16(convert_disposition(openDisposition));
1264 count += name_len;
1265 inc_rfc1001_len(pSMB, count);
1266
1267 pSMB->ByteCount = cpu_to_le16(count);
1268
1269 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
1270 (struct smb_hdr *)pSMBr, &bytes_returned, 0);
1271 cifs_stats_inc(&tcon->num_opens);
1272 if (rc) {
1273 cFYI(1, "Error in Open = %d", rc);
1274 } else {
1275
1276
1277
1278
1279 *netfid = pSMBr->Fid;
1280
1281
1282
1283
1284
1285
1286
1287 if (pfile_info) {
1288 pfile_info->CreationTime = 0;
1289 pfile_info->LastAccessTime = 0;
1290 pfile_info->LastWriteTime = 0;
1291 pfile_info->ChangeTime = 0;
1292 pfile_info->Attributes =
1293 cpu_to_le32(le16_to_cpu(pSMBr->FileAttributes));
1294
1295 pfile_info->AllocationSize =
1296 cpu_to_le64(le32_to_cpu(pSMBr->EndOfFile));
1297 pfile_info->EndOfFile = pfile_info->AllocationSize;
1298 pfile_info->NumberOfLinks = cpu_to_le32(1);
1299 pfile_info->DeletePending = 0;
1300 }
1301 }
1302
1303 cifs_buf_release(pSMB);
1304 if (rc == -EAGAIN)
1305 goto OldOpenRetry;
1306 return rc;
1307}
1308
1309int
1310CIFSSMBOpen(const int xid, struct cifs_tcon *tcon,
1311 const char *fileName, const int openDisposition,
1312 const int access_flags, const int create_options, __u16 *netfid,
1313 int *pOplock, FILE_ALL_INFO *pfile_info,
1314 const struct nls_table *nls_codepage, int remap)
1315{
1316 int rc = -EACCES;
1317 OPEN_REQ *pSMB = NULL;
1318 OPEN_RSP *pSMBr = NULL;
1319 int bytes_returned;
1320 int name_len;
1321 __u16 count;
1322
1323openRetry:
1324 rc = smb_init(SMB_COM_NT_CREATE_ANDX, 24, tcon, (void **) &pSMB,
1325 (void **) &pSMBr);
1326 if (rc)
1327 return rc;
1328
1329 pSMB->AndXCommand = 0xFF;
1330
1331 if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
1332 count = 1;
1333 name_len =
1334 cifsConvertToUTF16((__le16 *) (pSMB->fileName + 1),
1335 fileName, PATH_MAX, nls_codepage, remap);
1336 name_len++;
1337 name_len *= 2;
1338 pSMB->NameLength = cpu_to_le16(name_len);
1339 } else {
1340 count = 0;
1341 name_len = strnlen(fileName, PATH_MAX);
1342 name_len++;
1343 pSMB->NameLength = cpu_to_le16(name_len);
1344 strncpy(pSMB->fileName, fileName, name_len);
1345 }
1346 if (*pOplock & REQ_OPLOCK)
1347 pSMB->OpenFlags = cpu_to_le32(REQ_OPLOCK);
1348 else if (*pOplock & REQ_BATCHOPLOCK)
1349 pSMB->OpenFlags = cpu_to_le32(REQ_BATCHOPLOCK);
1350 pSMB->DesiredAccess = cpu_to_le32(access_flags);
1351 pSMB->AllocationSize = 0;
1352
1353
1354
1355 if (create_options & CREATE_OPTION_SPECIAL)
1356 pSMB->FileAttributes = cpu_to_le32(ATTR_SYSTEM);
1357 else
1358 pSMB->FileAttributes = cpu_to_le32(ATTR_NORMAL);
1359
1360
1361
1362
1363 if (tcon->ses->capabilities & CAP_UNIX)
1364 pSMB->FileAttributes |= cpu_to_le32(ATTR_POSIX_SEMANTICS);
1365
1366 if (create_options & CREATE_OPTION_READONLY)
1367 pSMB->FileAttributes |= cpu_to_le32(ATTR_READONLY);
1368
1369 pSMB->ShareAccess = cpu_to_le32(FILE_SHARE_ALL);
1370 pSMB->CreateDisposition = cpu_to_le32(openDisposition);
1371 pSMB->CreateOptions = cpu_to_le32(create_options & CREATE_OPTIONS_MASK);
1372
1373 pSMB->ImpersonationLevel = cpu_to_le32(SECURITY_IMPERSONATION);
1374 pSMB->SecurityFlags =
1375 SECURITY_CONTEXT_TRACKING | SECURITY_EFFECTIVE_ONLY;
1376
1377 count += name_len;
1378 inc_rfc1001_len(pSMB, count);
1379
1380 pSMB->ByteCount = cpu_to_le16(count);
1381
1382 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
1383 (struct smb_hdr *)pSMBr, &bytes_returned, 0);
1384 cifs_stats_inc(&tcon->num_opens);
1385 if (rc) {
1386 cFYI(1, "Error in Open = %d", rc);
1387 } else {
1388 *pOplock = pSMBr->OplockLevel;
1389 *netfid = pSMBr->Fid;
1390
1391
1392 if (cpu_to_le32(FILE_CREATE) == pSMBr->CreateAction)
1393 *pOplock |= CIFS_CREATE_ACTION;
1394 if (pfile_info) {
1395 memcpy((char *)pfile_info, (char *)&pSMBr->CreationTime,
1396 36 );
1397
1398 pfile_info->AllocationSize = pSMBr->AllocationSize;
1399 pfile_info->EndOfFile = pSMBr->EndOfFile;
1400 pfile_info->NumberOfLinks = cpu_to_le32(1);
1401 pfile_info->DeletePending = 0;
1402 }
1403 }
1404
1405 cifs_buf_release(pSMB);
1406 if (rc == -EAGAIN)
1407 goto openRetry;
1408 return rc;
1409}
1410
1411
1412
1413
1414
1415static int
1416cifs_readv_discard(struct TCP_Server_Info *server, struct mid_q_entry *mid)
1417{
1418 unsigned int rfclen = get_rfc1002_length(server->smallbuf);
1419 int remaining = rfclen + 4 - server->total_read;
1420 struct cifs_readdata *rdata = mid->callback_data;
1421
1422 while (remaining > 0) {
1423 int length;
1424
1425 length = cifs_read_from_socket(server, server->bigbuf,
1426 min_t(unsigned int, remaining,
1427 CIFSMaxBufSize + MAX_HEADER_SIZE(server)));
1428 if (length < 0)
1429 return length;
1430 server->total_read += length;
1431 remaining -= length;
1432 }
1433
1434 dequeue_mid(mid, rdata->result);
1435 return 0;
1436}
1437
1438static int
1439cifs_readv_receive(struct TCP_Server_Info *server, struct mid_q_entry *mid)
1440{
1441 int length, len;
1442 unsigned int data_offset, data_len;
1443 struct cifs_readdata *rdata = mid->callback_data;
1444 char *buf = server->smallbuf;
1445 unsigned int buflen = get_rfc1002_length(buf) + 4;
1446
1447 cFYI(1, "%s: mid=%llu offset=%llu bytes=%u", __func__,
1448 mid->mid, rdata->offset, rdata->bytes);
1449
1450
1451
1452
1453
1454
1455 len = min_t(unsigned int, buflen, server->vals->read_rsp_size) -
1456 HEADER_SIZE(server) + 1;
1457
1458 rdata->iov[0].iov_base = buf + HEADER_SIZE(server) - 1;
1459 rdata->iov[0].iov_len = len;
1460
1461 length = cifs_readv_from_socket(server, rdata->iov, 1, len);
1462 if (length < 0)
1463 return length;
1464 server->total_read += length;
1465
1466
1467 rdata->result = server->ops->map_error(buf, false);
1468 if (rdata->result != 0) {
1469 cFYI(1, "%s: server returned error %d", __func__,
1470 rdata->result);
1471 return cifs_readv_discard(server, mid);
1472 }
1473
1474
1475 if (server->total_read < server->vals->read_rsp_size) {
1476 cFYI(1, "%s: server returned short header. got=%u expected=%zu",
1477 __func__, server->total_read,
1478 server->vals->read_rsp_size);
1479 rdata->result = -EIO;
1480 return cifs_readv_discard(server, mid);
1481 }
1482
1483 data_offset = server->ops->read_data_offset(buf) + 4;
1484 if (data_offset < server->total_read) {
1485
1486
1487
1488
1489
1490 cFYI(1, "%s: data offset (%u) inside read response header",
1491 __func__, data_offset);
1492 data_offset = server->total_read;
1493 } else if (data_offset > MAX_CIFS_SMALL_BUFFER_SIZE) {
1494
1495 cFYI(1, "%s: data offset (%u) beyond end of smallbuf",
1496 __func__, data_offset);
1497 rdata->result = -EIO;
1498 return cifs_readv_discard(server, mid);
1499 }
1500
1501 cFYI(1, "%s: total_read=%u data_offset=%u", __func__,
1502 server->total_read, data_offset);
1503
1504 len = data_offset - server->total_read;
1505 if (len > 0) {
1506
1507 rdata->iov[0].iov_base = buf + server->total_read;
1508 rdata->iov[0].iov_len = len;
1509 length = cifs_readv_from_socket(server, rdata->iov, 1, len);
1510 if (length < 0)
1511 return length;
1512 server->total_read += length;
1513 }
1514
1515
1516 rdata->iov[0].iov_base = buf;
1517 rdata->iov[0].iov_len = server->total_read;
1518 cFYI(1, "0: iov_base=%p iov_len=%zu",
1519 rdata->iov[0].iov_base, rdata->iov[0].iov_len);
1520
1521
1522 data_len = server->ops->read_data_length(buf);
1523 if (data_offset + data_len > buflen) {
1524
1525 rdata->result = -EIO;
1526 return cifs_readv_discard(server, mid);
1527 }
1528
1529
1530 cifs_kmap_lock();
1531 len = rdata->marshal_iov(rdata, data_len);
1532 cifs_kmap_unlock();
1533 data_len -= len;
1534
1535
1536 if (rdata->nr_iov > 1) {
1537 length = cifs_readv_from_socket(server, &rdata->iov[1],
1538 rdata->nr_iov - 1, len);
1539 if (length < 0)
1540 return length;
1541 server->total_read += length;
1542 } else {
1543 length = 0;
1544 }
1545
1546 rdata->bytes = length;
1547
1548 cFYI(1, "total_read=%u buflen=%u remaining=%u", server->total_read,
1549 buflen, data_len);
1550
1551
1552 if (server->total_read < buflen)
1553 return cifs_readv_discard(server, mid);
1554
1555 dequeue_mid(mid, false);
1556 return length;
1557}
1558
1559static void
1560cifs_readv_callback(struct mid_q_entry *mid)
1561{
1562 struct cifs_readdata *rdata = mid->callback_data;
1563 struct cifs_tcon *tcon = tlink_tcon(rdata->cfile->tlink);
1564 struct TCP_Server_Info *server = tcon->ses->server;
1565
1566 cFYI(1, "%s: mid=%llu state=%d result=%d bytes=%u", __func__,
1567 mid->mid, mid->mid_state, rdata->result, rdata->bytes);
1568
1569 switch (mid->mid_state) {
1570 case MID_RESPONSE_RECEIVED:
1571
1572 if (server->sec_mode &
1573 (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) {
1574 if (cifs_verify_signature(rdata->iov, rdata->nr_iov,
1575 server, mid->sequence_number + 1))
1576 cERROR(1, "Unexpected SMB signature");
1577 }
1578
1579 task_io_account_read(rdata->bytes);
1580 cifs_stats_bytes_read(tcon, rdata->bytes);
1581 break;
1582 case MID_REQUEST_SUBMITTED:
1583 case MID_RETRY_NEEDED:
1584 rdata->result = -EAGAIN;
1585 break;
1586 default:
1587 rdata->result = -EIO;
1588 }
1589
1590 queue_work(cifsiod_wq, &rdata->work);
1591 DeleteMidQEntry(mid);
1592 add_credits(server, 1);
1593}
1594
1595
1596int
1597cifs_async_readv(struct cifs_readdata *rdata)
1598{
1599 int rc;
1600 READ_REQ *smb = NULL;
1601 int wct;
1602 struct cifs_tcon *tcon = tlink_tcon(rdata->cfile->tlink);
1603
1604 cFYI(1, "%s: offset=%llu bytes=%u", __func__,
1605 rdata->offset, rdata->bytes);
1606
1607 if (tcon->ses->capabilities & CAP_LARGE_FILES)
1608 wct = 12;
1609 else {
1610 wct = 10;
1611 if ((rdata->offset >> 32) > 0) {
1612
1613 return -EIO;
1614 }
1615 }
1616
1617 rc = small_smb_init(SMB_COM_READ_ANDX, wct, tcon, (void **)&smb);
1618 if (rc)
1619 return rc;
1620
1621 smb->hdr.Pid = cpu_to_le16((__u16)rdata->pid);
1622 smb->hdr.PidHigh = cpu_to_le16((__u16)(rdata->pid >> 16));
1623
1624 smb->AndXCommand = 0xFF;
1625 smb->Fid = rdata->cfile->netfid;
1626 smb->OffsetLow = cpu_to_le32(rdata->offset & 0xFFFFFFFF);
1627 if (wct == 12)
1628 smb->OffsetHigh = cpu_to_le32(rdata->offset >> 32);
1629 smb->Remaining = 0;
1630 smb->MaxCount = cpu_to_le16(rdata->bytes & 0xFFFF);
1631 smb->MaxCountHigh = cpu_to_le32(rdata->bytes >> 16);
1632 if (wct == 12)
1633 smb->ByteCount = 0;
1634 else {
1635
1636 struct smb_com_readx_req *smbr =
1637 (struct smb_com_readx_req *)smb;
1638 smbr->ByteCount = 0;
1639 }
1640
1641
1642 rdata->iov[0].iov_base = smb;
1643 rdata->iov[0].iov_len = be32_to_cpu(smb->hdr.smb_buf_length) + 4;
1644
1645 kref_get(&rdata->refcount);
1646 rc = cifs_call_async(tcon->ses->server, rdata->iov, 1,
1647 cifs_readv_receive, cifs_readv_callback,
1648 rdata, false);
1649
1650 if (rc == 0)
1651 cifs_stats_inc(&tcon->num_reads);
1652 else
1653 kref_put(&rdata->refcount, cifs_readdata_release);
1654
1655 cifs_small_buf_release(smb);
1656 return rc;
1657}
1658
1659int
1660CIFSSMBRead(const int xid, struct cifs_io_parms *io_parms, unsigned int *nbytes,
1661 char **buf, int *pbuf_type)
1662{
1663 int rc = -EACCES;
1664 READ_REQ *pSMB = NULL;
1665 READ_RSP *pSMBr = NULL;
1666 char *pReadData = NULL;
1667 int wct;
1668 int resp_buf_type = 0;
1669 struct kvec iov[1];
1670 __u32 pid = io_parms->pid;
1671 __u16 netfid = io_parms->netfid;
1672 __u64 offset = io_parms->offset;
1673 struct cifs_tcon *tcon = io_parms->tcon;
1674 unsigned int count = io_parms->length;
1675
1676 cFYI(1, "Reading %d bytes on fid %d", count, netfid);
1677 if (tcon->ses->capabilities & CAP_LARGE_FILES)
1678 wct = 12;
1679 else {
1680 wct = 10;
1681 if ((offset >> 32) > 0) {
1682
1683 return -EIO;
1684 }
1685 }
1686
1687 *nbytes = 0;
1688 rc = small_smb_init(SMB_COM_READ_ANDX, wct, tcon, (void **) &pSMB);
1689 if (rc)
1690 return rc;
1691
1692 pSMB->hdr.Pid = cpu_to_le16((__u16)pid);
1693 pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid >> 16));
1694
1695
1696 if (tcon->ses->server == NULL)
1697 return -ECONNABORTED;
1698
1699 pSMB->AndXCommand = 0xFF;
1700 pSMB->Fid = netfid;
1701 pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF);
1702 if (wct == 12)
1703 pSMB->OffsetHigh = cpu_to_le32(offset >> 32);
1704
1705 pSMB->Remaining = 0;
1706 pSMB->MaxCount = cpu_to_le16(count & 0xFFFF);
1707 pSMB->MaxCountHigh = cpu_to_le32(count >> 16);
1708 if (wct == 12)
1709 pSMB->ByteCount = 0;
1710 else {
1711
1712 struct smb_com_readx_req *pSMBW =
1713 (struct smb_com_readx_req *)pSMB;
1714 pSMBW->ByteCount = 0;
1715 }
1716
1717 iov[0].iov_base = (char *)pSMB;
1718 iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4;
1719 rc = SendReceive2(xid, tcon->ses, iov, 1 ,
1720 &resp_buf_type, CIFS_LOG_ERROR);
1721 cifs_stats_inc(&tcon->num_reads);
1722 pSMBr = (READ_RSP *)iov[0].iov_base;
1723 if (rc) {
1724 cERROR(1, "Send error in read = %d", rc);
1725 } else {
1726 int data_length = le16_to_cpu(pSMBr->DataLengthHigh);
1727 data_length = data_length << 16;
1728 data_length += le16_to_cpu(pSMBr->DataLength);
1729 *nbytes = data_length;
1730
1731
1732 if ((data_length > CIFSMaxBufSize)
1733 || (data_length > count)) {
1734 cFYI(1, "bad length %d for count %d",
1735 data_length, count);
1736 rc = -EIO;
1737 *nbytes = 0;
1738 } else {
1739 pReadData = (char *) (&pSMBr->hdr.Protocol) +
1740 le16_to_cpu(pSMBr->DataOffset);
1741
1742
1743
1744
1745 if (*buf)
1746 memcpy(*buf, pReadData, data_length);
1747 }
1748 }
1749
1750
1751 if (*buf) {
1752 if (resp_buf_type == CIFS_SMALL_BUFFER)
1753 cifs_small_buf_release(iov[0].iov_base);
1754 else if (resp_buf_type == CIFS_LARGE_BUFFER)
1755 cifs_buf_release(iov[0].iov_base);
1756 } else if (resp_buf_type != CIFS_NO_BUFFER) {
1757
1758 *buf = iov[0].iov_base;
1759 if (resp_buf_type == CIFS_SMALL_BUFFER)
1760 *pbuf_type = CIFS_SMALL_BUFFER;
1761 else if (resp_buf_type == CIFS_LARGE_BUFFER)
1762 *pbuf_type = CIFS_LARGE_BUFFER;
1763 }
1764
1765
1766
1767 return rc;
1768}
1769
1770
1771int
1772CIFSSMBWrite(const int xid, struct cifs_io_parms *io_parms,
1773 unsigned int *nbytes, const char *buf,
1774 const char __user *ubuf, const int long_op)
1775{
1776 int rc = -EACCES;
1777 WRITE_REQ *pSMB = NULL;
1778 WRITE_RSP *pSMBr = NULL;
1779 int bytes_returned, wct;
1780 __u32 bytes_sent;
1781 __u16 byte_count;
1782 __u32 pid = io_parms->pid;
1783 __u16 netfid = io_parms->netfid;
1784 __u64 offset = io_parms->offset;
1785 struct cifs_tcon *tcon = io_parms->tcon;
1786 unsigned int count = io_parms->length;
1787
1788 *nbytes = 0;
1789
1790
1791 if (tcon->ses == NULL)
1792 return -ECONNABORTED;
1793
1794 if (tcon->ses->capabilities & CAP_LARGE_FILES)
1795 wct = 14;
1796 else {
1797 wct = 12;
1798 if ((offset >> 32) > 0) {
1799
1800 return -EIO;
1801 }
1802 }
1803
1804 rc = smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **) &pSMB,
1805 (void **) &pSMBr);
1806 if (rc)
1807 return rc;
1808
1809 pSMB->hdr.Pid = cpu_to_le16((__u16)pid);
1810 pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid >> 16));
1811
1812
1813 if (tcon->ses->server == NULL)
1814 return -ECONNABORTED;
1815
1816 pSMB->AndXCommand = 0xFF;
1817 pSMB->Fid = netfid;
1818 pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF);
1819 if (wct == 14)
1820 pSMB->OffsetHigh = cpu_to_le32(offset >> 32);
1821
1822 pSMB->Reserved = 0xFFFFFFFF;
1823 pSMB->WriteMode = 0;
1824 pSMB->Remaining = 0;
1825
1826
1827
1828
1829
1830 if (tcon->ses->capabilities & CAP_LARGE_WRITE_X) {
1831 bytes_sent = min_t(const unsigned int, CIFSMaxBufSize, count);
1832 } else {
1833 bytes_sent = (tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE)
1834 & ~0xFF;
1835 }
1836
1837 if (bytes_sent > count)
1838 bytes_sent = count;
1839 pSMB->DataOffset =
1840 cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4);
1841 if (buf)
1842 memcpy(pSMB->Data, buf, bytes_sent);
1843 else if (ubuf) {
1844 if (copy_from_user(pSMB->Data, ubuf, bytes_sent)) {
1845 cifs_buf_release(pSMB);
1846 return -EFAULT;
1847 }
1848 } else if (count != 0) {
1849
1850 cifs_buf_release(pSMB);
1851 return -EINVAL;
1852 }
1853 if (wct == 14)
1854 byte_count = bytes_sent + 1;
1855 else
1856 byte_count = bytes_sent + 5;
1857
1858 pSMB->DataLengthLow = cpu_to_le16(bytes_sent & 0xFFFF);
1859 pSMB->DataLengthHigh = cpu_to_le16(bytes_sent >> 16);
1860 inc_rfc1001_len(pSMB, byte_count);
1861
1862 if (wct == 14)
1863 pSMB->ByteCount = cpu_to_le16(byte_count);
1864 else {
1865
1866 struct smb_com_writex_req *pSMBW =
1867 (struct smb_com_writex_req *)pSMB;
1868 pSMBW->ByteCount = cpu_to_le16(byte_count);
1869 }
1870
1871 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
1872 (struct smb_hdr *) pSMBr, &bytes_returned, long_op);
1873 cifs_stats_inc(&tcon->num_writes);
1874 if (rc) {
1875 cFYI(1, "Send error in write = %d", rc);
1876 } else {
1877 *nbytes = le16_to_cpu(pSMBr->CountHigh);
1878 *nbytes = (*nbytes) << 16;
1879 *nbytes += le16_to_cpu(pSMBr->Count);
1880
1881
1882
1883
1884
1885
1886 if (*nbytes > count)
1887 *nbytes &= 0xFFFF;
1888 }
1889
1890 cifs_buf_release(pSMB);
1891
1892
1893
1894
1895 return rc;
1896}
1897
1898void
1899cifs_writedata_release(struct kref *refcount)
1900{
1901 struct cifs_writedata *wdata = container_of(refcount,
1902 struct cifs_writedata, refcount);
1903
1904 if (wdata->cfile)
1905 cifsFileInfo_put(wdata->cfile);
1906
1907 kfree(wdata);
1908}
1909
1910
1911
1912
1913
1914static void
1915cifs_writev_requeue(struct cifs_writedata *wdata)
1916{
1917 int i, rc;
1918 struct inode *inode = wdata->cfile->dentry->d_inode;
1919
1920 for (i = 0; i < wdata->nr_pages; i++) {
1921 lock_page(wdata->pages[i]);
1922 clear_page_dirty_for_io(wdata->pages[i]);
1923 }
1924
1925 do {
1926 rc = cifs_async_writev(wdata);
1927 } while (rc == -EAGAIN);
1928
1929 for (i = 0; i < wdata->nr_pages; i++) {
1930 if (rc != 0)
1931 SetPageError(wdata->pages[i]);
1932 unlock_page(wdata->pages[i]);
1933 }
1934
1935 mapping_set_error(inode->i_mapping, rc);
1936 kref_put(&wdata->refcount, cifs_writedata_release);
1937}
1938
1939void
1940cifs_writev_complete(struct work_struct *work)
1941{
1942 struct cifs_writedata *wdata = container_of(work,
1943 struct cifs_writedata, work);
1944 struct inode *inode = wdata->cfile->dentry->d_inode;
1945 int i = 0;
1946
1947 if (wdata->result == 0) {
1948 spin_lock(&inode->i_lock);
1949 cifs_update_eof(CIFS_I(inode), wdata->offset, wdata->bytes);
1950 spin_unlock(&inode->i_lock);
1951 cifs_stats_bytes_written(tlink_tcon(wdata->cfile->tlink),
1952 wdata->bytes);
1953 } else if (wdata->sync_mode == WB_SYNC_ALL && wdata->result == -EAGAIN)
1954 return cifs_writev_requeue(wdata);
1955
1956 for (i = 0; i < wdata->nr_pages; i++) {
1957 struct page *page = wdata->pages[i];
1958 if (wdata->result == -EAGAIN)
1959 __set_page_dirty_nobuffers(page);
1960 else if (wdata->result < 0)
1961 SetPageError(page);
1962 end_page_writeback(page);
1963 page_cache_release(page);
1964 }
1965 if (wdata->result != -EAGAIN)
1966 mapping_set_error(inode->i_mapping, wdata->result);
1967 kref_put(&wdata->refcount, cifs_writedata_release);
1968}
1969
1970struct cifs_writedata *
1971cifs_writedata_alloc(unsigned int nr_pages, work_func_t complete)
1972{
1973 struct cifs_writedata *wdata;
1974
1975
1976 if (nr_pages == 0) {
1977 cERROR(1, "%s: called with nr_pages == 0!", __func__);
1978 return NULL;
1979 }
1980
1981
1982 wdata = kzalloc(sizeof(*wdata) +
1983 sizeof(struct page *) * (nr_pages - 1), GFP_NOFS);
1984 if (wdata != NULL) {
1985 kref_init(&wdata->refcount);
1986 INIT_LIST_HEAD(&wdata->list);
1987 init_completion(&wdata->done);
1988 INIT_WORK(&wdata->work, complete);
1989 }
1990 return wdata;
1991}
1992
1993
1994
1995
1996
1997static void
1998cifs_writev_callback(struct mid_q_entry *mid)
1999{
2000 struct cifs_writedata *wdata = mid->callback_data;
2001 struct cifs_tcon *tcon = tlink_tcon(wdata->cfile->tlink);
2002 unsigned int written;
2003 WRITE_RSP *smb = (WRITE_RSP *)mid->resp_buf;
2004
2005 switch (mid->mid_state) {
2006 case MID_RESPONSE_RECEIVED:
2007 wdata->result = cifs_check_receive(mid, tcon->ses->server, 0);
2008 if (wdata->result != 0)
2009 break;
2010
2011 written = le16_to_cpu(smb->CountHigh);
2012 written <<= 16;
2013 written += le16_to_cpu(smb->Count);
2014
2015
2016
2017
2018
2019
2020 if (written > wdata->bytes)
2021 written &= 0xFFFF;
2022
2023 if (written < wdata->bytes)
2024 wdata->result = -ENOSPC;
2025 else
2026 wdata->bytes = written;
2027 break;
2028 case MID_REQUEST_SUBMITTED:
2029 case MID_RETRY_NEEDED:
2030 wdata->result = -EAGAIN;
2031 break;
2032 default:
2033 wdata->result = -EIO;
2034 break;
2035 }
2036
2037 queue_work(cifsiod_wq, &wdata->work);
2038 DeleteMidQEntry(mid);
2039 add_credits(tcon->ses->server, 1);
2040}
2041
2042
2043int
2044cifs_async_writev(struct cifs_writedata *wdata)
2045{
2046 int i, rc = -EACCES;
2047 WRITE_REQ *smb = NULL;
2048 int wct;
2049 struct cifs_tcon *tcon = tlink_tcon(wdata->cfile->tlink);
2050 struct kvec *iov = NULL;
2051
2052 if (tcon->ses->capabilities & CAP_LARGE_FILES) {
2053 wct = 14;
2054 } else {
2055 wct = 12;
2056 if (wdata->offset >> 32 > 0) {
2057
2058 return -EIO;
2059 }
2060 }
2061
2062 rc = small_smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **)&smb);
2063 if (rc)
2064 goto async_writev_out;
2065
2066
2067 iov = kzalloc((wdata->nr_pages + 1) * sizeof(*iov), GFP_NOFS);
2068 if (iov == NULL) {
2069 rc = -ENOMEM;
2070 goto async_writev_out;
2071 }
2072
2073 smb->hdr.Pid = cpu_to_le16((__u16)wdata->pid);
2074 smb->hdr.PidHigh = cpu_to_le16((__u16)(wdata->pid >> 16));
2075
2076 smb->AndXCommand = 0xFF;
2077 smb->Fid = wdata->cfile->netfid;
2078 smb->OffsetLow = cpu_to_le32(wdata->offset & 0xFFFFFFFF);
2079 if (wct == 14)
2080 smb->OffsetHigh = cpu_to_le32(wdata->offset >> 32);
2081 smb->Reserved = 0xFFFFFFFF;
2082 smb->WriteMode = 0;
2083 smb->Remaining = 0;
2084
2085 smb->DataOffset =
2086 cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4);
2087
2088
2089 iov[0].iov_len = be32_to_cpu(smb->hdr.smb_buf_length) + 4 + 1;
2090 iov[0].iov_base = smb;
2091
2092
2093
2094
2095
2096
2097
2098 cifs_kmap_lock();
2099 wdata->marshal_iov(iov, wdata);
2100 cifs_kmap_unlock();
2101
2102 cFYI(1, "async write at %llu %u bytes", wdata->offset, wdata->bytes);
2103
2104 smb->DataLengthLow = cpu_to_le16(wdata->bytes & 0xFFFF);
2105 smb->DataLengthHigh = cpu_to_le16(wdata->bytes >> 16);
2106
2107 if (wct == 14) {
2108 inc_rfc1001_len(&smb->hdr, wdata->bytes + 1);
2109 put_bcc(wdata->bytes + 1, &smb->hdr);
2110 } else {
2111
2112 struct smb_com_writex_req *smbw =
2113 (struct smb_com_writex_req *)smb;
2114 inc_rfc1001_len(&smbw->hdr, wdata->bytes + 5);
2115 put_bcc(wdata->bytes + 5, &smbw->hdr);
2116 iov[0].iov_len += 4;
2117 }
2118
2119 kref_get(&wdata->refcount);
2120 rc = cifs_call_async(tcon->ses->server, iov, wdata->nr_pages + 1,
2121 NULL, cifs_writev_callback, wdata, false);
2122
2123 if (rc == 0)
2124 cifs_stats_inc(&tcon->num_writes);
2125 else
2126 kref_put(&wdata->refcount, cifs_writedata_release);
2127
2128
2129 for (i = 0; i < wdata->nr_pages; i++)
2130 kunmap(wdata->pages[i]);
2131
2132async_writev_out:
2133 cifs_small_buf_release(smb);
2134 kfree(iov);
2135 return rc;
2136}
2137
2138int
2139CIFSSMBWrite2(const int xid, struct cifs_io_parms *io_parms,
2140 unsigned int *nbytes, struct kvec *iov, int n_vec,
2141 const int long_op)
2142{
2143 int rc = -EACCES;
2144 WRITE_REQ *pSMB = NULL;
2145 int wct;
2146 int smb_hdr_len;
2147 int resp_buf_type = 0;
2148 __u32 pid = io_parms->pid;
2149 __u16 netfid = io_parms->netfid;
2150 __u64 offset = io_parms->offset;
2151 struct cifs_tcon *tcon = io_parms->tcon;
2152 unsigned int count = io_parms->length;
2153
2154 *nbytes = 0;
2155
2156 cFYI(1, "write2 at %lld %d bytes", (long long)offset, count);
2157
2158 if (tcon->ses->capabilities & CAP_LARGE_FILES) {
2159 wct = 14;
2160 } else {
2161 wct = 12;
2162 if ((offset >> 32) > 0) {
2163
2164 return -EIO;
2165 }
2166 }
2167 rc = small_smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **) &pSMB);
2168 if (rc)
2169 return rc;
2170
2171 pSMB->hdr.Pid = cpu_to_le16((__u16)pid);
2172 pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid >> 16));
2173
2174
2175 if (tcon->ses->server == NULL)
2176 return -ECONNABORTED;
2177
2178 pSMB->AndXCommand = 0xFF;
2179 pSMB->Fid = netfid;
2180 pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF);
2181 if (wct == 14)
2182 pSMB->OffsetHigh = cpu_to_le32(offset >> 32);
2183 pSMB->Reserved = 0xFFFFFFFF;
2184 pSMB->WriteMode = 0;
2185 pSMB->Remaining = 0;
2186
2187 pSMB->DataOffset =
2188 cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4);
2189
2190 pSMB->DataLengthLow = cpu_to_le16(count & 0xFFFF);
2191 pSMB->DataLengthHigh = cpu_to_le16(count >> 16);
2192
2193 smb_hdr_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 1;
2194 if (wct == 14)
2195 inc_rfc1001_len(pSMB, count + 1);
2196 else
2197 inc_rfc1001_len(pSMB, count + 5);
2198 if (wct == 14)
2199 pSMB->ByteCount = cpu_to_le16(count + 1);
2200 else {
2201 struct smb_com_writex_req *pSMBW =
2202 (struct smb_com_writex_req *)pSMB;
2203 pSMBW->ByteCount = cpu_to_le16(count + 5);
2204 }
2205 iov[0].iov_base = pSMB;
2206 if (wct == 14)
2207 iov[0].iov_len = smb_hdr_len + 4;
2208 else
2209 iov[0].iov_len = smb_hdr_len + 8;
2210
2211
2212 rc = SendReceive2(xid, tcon->ses, iov, n_vec + 1, &resp_buf_type,
2213 long_op);
2214 cifs_stats_inc(&tcon->num_writes);
2215 if (rc) {
2216 cFYI(1, "Send error Write2 = %d", rc);
2217 } else if (resp_buf_type == 0) {
2218
2219 rc = -EIO;
2220 } else {
2221 WRITE_RSP *pSMBr = (WRITE_RSP *)iov[0].iov_base;
2222 *nbytes = le16_to_cpu(pSMBr->CountHigh);
2223 *nbytes = (*nbytes) << 16;
2224 *nbytes += le16_to_cpu(pSMBr->Count);
2225
2226
2227
2228
2229
2230
2231 if (*nbytes > count)
2232 *nbytes &= 0xFFFF;
2233 }
2234
2235
2236 if (resp_buf_type == CIFS_SMALL_BUFFER)
2237 cifs_small_buf_release(iov[0].iov_base);
2238 else if (resp_buf_type == CIFS_LARGE_BUFFER)
2239 cifs_buf_release(iov[0].iov_base);
2240
2241
2242
2243
2244 return rc;
2245}
2246
2247int cifs_lockv(const int xid, struct cifs_tcon *tcon, const __u16 netfid,
2248 const __u8 lock_type, const __u32 num_unlock,
2249 const __u32 num_lock, LOCKING_ANDX_RANGE *buf)
2250{
2251 int rc = 0;
2252 LOCK_REQ *pSMB = NULL;
2253 struct kvec iov[2];
2254 int resp_buf_type;
2255 __u16 count;
2256
2257 cFYI(1, "cifs_lockv num lock %d num unlock %d", num_lock, num_unlock);
2258
2259 rc = small_smb_init(SMB_COM_LOCKING_ANDX, 8, tcon, (void **) &pSMB);
2260 if (rc)
2261 return rc;
2262
2263 pSMB->Timeout = 0;
2264 pSMB->NumberOfLocks = cpu_to_le16(num_lock);
2265 pSMB->NumberOfUnlocks = cpu_to_le16(num_unlock);
2266 pSMB->LockType = lock_type;
2267 pSMB->AndXCommand = 0xFF;
2268 pSMB->Fid = netfid;
2269
2270 count = (num_unlock + num_lock) * sizeof(LOCKING_ANDX_RANGE);
2271 inc_rfc1001_len(pSMB, count);
2272 pSMB->ByteCount = cpu_to_le16(count);
2273
2274 iov[0].iov_base = (char *)pSMB;
2275 iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4 -
2276 (num_unlock + num_lock) * sizeof(LOCKING_ANDX_RANGE);
2277 iov[1].iov_base = (char *)buf;
2278 iov[1].iov_len = (num_unlock + num_lock) * sizeof(LOCKING_ANDX_RANGE);
2279
2280 cifs_stats_inc(&tcon->num_locks);
2281 rc = SendReceive2(xid, tcon->ses, iov, 2, &resp_buf_type, CIFS_NO_RESP);
2282 if (rc)
2283 cFYI(1, "Send error in cifs_lockv = %d", rc);
2284
2285 return rc;
2286}
2287
2288int
2289CIFSSMBLock(const int xid, struct cifs_tcon *tcon,
2290 const __u16 smb_file_id, const __u32 netpid, const __u64 len,
2291 const __u64 offset, const __u32 numUnlock,
2292 const __u32 numLock, const __u8 lockType,
2293 const bool waitFlag, const __u8 oplock_level)
2294{
2295 int rc = 0;
2296 LOCK_REQ *pSMB = NULL;
2297
2298 int bytes_returned;
2299 int timeout = 0;
2300 __u16 count;
2301
2302 cFYI(1, "CIFSSMBLock timeout %d numLock %d", (int)waitFlag, numLock);
2303 rc = small_smb_init(SMB_COM_LOCKING_ANDX, 8, tcon, (void **) &pSMB);
2304
2305 if (rc)
2306 return rc;
2307
2308 if (lockType == LOCKING_ANDX_OPLOCK_RELEASE) {
2309 timeout = CIFS_ASYNC_OP;
2310 pSMB->Timeout = 0;
2311 } else if (waitFlag) {
2312 timeout = CIFS_BLOCKING_OP;
2313 pSMB->Timeout = cpu_to_le32(-1);
2314 } else {
2315 pSMB->Timeout = 0;
2316 }
2317
2318 pSMB->NumberOfLocks = cpu_to_le16(numLock);
2319 pSMB->NumberOfUnlocks = cpu_to_le16(numUnlock);
2320 pSMB->LockType = lockType;
2321 pSMB->OplockLevel = oplock_level;
2322 pSMB->AndXCommand = 0xFF;
2323 pSMB->Fid = smb_file_id;
2324
2325 if ((numLock != 0) || (numUnlock != 0)) {
2326 pSMB->Locks[0].Pid = cpu_to_le16(netpid);
2327
2328 pSMB->Locks[0].LengthLow = cpu_to_le32((u32)len);
2329 pSMB->Locks[0].LengthHigh = cpu_to_le32((u32)(len>>32));
2330 pSMB->Locks[0].OffsetLow = cpu_to_le32((u32)offset);
2331 pSMB->Locks[0].OffsetHigh = cpu_to_le32((u32)(offset>>32));
2332 count = sizeof(LOCKING_ANDX_RANGE);
2333 } else {
2334
2335 count = 0;
2336 }
2337 inc_rfc1001_len(pSMB, count);
2338 pSMB->ByteCount = cpu_to_le16(count);
2339
2340 if (waitFlag) {
2341 rc = SendReceiveBlockingLock(xid, tcon, (struct smb_hdr *) pSMB,
2342 (struct smb_hdr *) pSMB, &bytes_returned);
2343 cifs_small_buf_release(pSMB);
2344 } else {
2345 rc = SendReceiveNoRsp(xid, tcon->ses, (char *)pSMB, timeout);
2346
2347 }
2348 cifs_stats_inc(&tcon->num_locks);
2349 if (rc)
2350 cFYI(1, "Send error in Lock = %d", rc);
2351
2352
2353
2354 return rc;
2355}
2356
2357int
2358CIFSSMBPosixLock(const int xid, struct cifs_tcon *tcon,
2359 const __u16 smb_file_id, const __u32 netpid, const int get_flag,
2360 const __u64 len, struct file_lock *pLockData,
2361 const __u16 lock_type, const bool waitFlag)
2362{
2363 struct smb_com_transaction2_sfi_req *pSMB = NULL;
2364 struct smb_com_transaction2_sfi_rsp *pSMBr = NULL;
2365 struct cifs_posix_lock *parm_data;
2366 int rc = 0;
2367 int timeout = 0;
2368 int bytes_returned = 0;
2369 int resp_buf_type = 0;
2370 __u16 params, param_offset, offset, byte_count, count;
2371 struct kvec iov[1];
2372
2373 cFYI(1, "Posix Lock");
2374
2375 if (pLockData == NULL)
2376 return -EINVAL;
2377
2378 rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB);
2379
2380 if (rc)
2381 return rc;
2382
2383 pSMBr = (struct smb_com_transaction2_sfi_rsp *)pSMB;
2384
2385 params = 6;
2386 pSMB->MaxSetupCount = 0;
2387 pSMB->Reserved = 0;
2388 pSMB->Flags = 0;
2389 pSMB->Reserved2 = 0;
2390 param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4;
2391 offset = param_offset + params;
2392
2393 count = sizeof(struct cifs_posix_lock);
2394 pSMB->MaxParameterCount = cpu_to_le16(2);
2395 pSMB->MaxDataCount = cpu_to_le16(1000);
2396 pSMB->SetupCount = 1;
2397 pSMB->Reserved3 = 0;
2398 if (get_flag)
2399 pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION);
2400 else
2401 pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION);
2402 byte_count = 3 + params + count;
2403 pSMB->DataCount = cpu_to_le16(count);
2404 pSMB->ParameterCount = cpu_to_le16(params);
2405 pSMB->TotalDataCount = pSMB->DataCount;
2406 pSMB->TotalParameterCount = pSMB->ParameterCount;
2407 pSMB->ParameterOffset = cpu_to_le16(param_offset);
2408 parm_data = (struct cifs_posix_lock *)
2409 (((char *) &pSMB->hdr.Protocol) + offset);
2410
2411 parm_data->lock_type = cpu_to_le16(lock_type);
2412 if (waitFlag) {
2413 timeout = CIFS_BLOCKING_OP;
2414 parm_data->lock_flags = cpu_to_le16(1);
2415 pSMB->Timeout = cpu_to_le32(-1);
2416 } else
2417 pSMB->Timeout = 0;
2418
2419 parm_data->pid = cpu_to_le32(netpid);
2420 parm_data->start = cpu_to_le64(pLockData->fl_start);
2421 parm_data->length = cpu_to_le64(len);
2422
2423 pSMB->DataOffset = cpu_to_le16(offset);
2424 pSMB->Fid = smb_file_id;
2425 pSMB->InformationLevel = cpu_to_le16(SMB_SET_POSIX_LOCK);
2426 pSMB->Reserved4 = 0;
2427 inc_rfc1001_len(pSMB, byte_count);
2428 pSMB->ByteCount = cpu_to_le16(byte_count);
2429 if (waitFlag) {
2430 rc = SendReceiveBlockingLock(xid, tcon, (struct smb_hdr *) pSMB,
2431 (struct smb_hdr *) pSMBr, &bytes_returned);
2432 } else {
2433 iov[0].iov_base = (char *)pSMB;
2434 iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4;
2435 rc = SendReceive2(xid, tcon->ses, iov, 1 ,
2436 &resp_buf_type, timeout);
2437 pSMB = NULL;
2438
2439 pSMBr = (struct smb_com_transaction2_sfi_rsp *)iov[0].iov_base;
2440 }
2441
2442 if (rc) {
2443 cFYI(1, "Send error in Posix Lock = %d", rc);
2444 } else if (get_flag) {
2445
2446 __u16 data_offset;
2447 __u16 data_count;
2448 rc = validate_t2((struct smb_t2_rsp *)pSMBr);
2449
2450 if (rc || get_bcc(&pSMBr->hdr) < sizeof(*parm_data)) {
2451 rc = -EIO;
2452 goto plk_err_exit;
2453 }
2454 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
2455 data_count = le16_to_cpu(pSMBr->t2.DataCount);
2456 if (data_count < sizeof(struct cifs_posix_lock)) {
2457 rc = -EIO;
2458 goto plk_err_exit;
2459 }
2460 parm_data = (struct cifs_posix_lock *)
2461 ((char *)&pSMBr->hdr.Protocol + data_offset);
2462 if (parm_data->lock_type == __constant_cpu_to_le16(CIFS_UNLCK))
2463 pLockData->fl_type = F_UNLCK;
2464 else {
2465 if (parm_data->lock_type ==
2466 __constant_cpu_to_le16(CIFS_RDLCK))
2467 pLockData->fl_type = F_RDLCK;
2468 else if (parm_data->lock_type ==
2469 __constant_cpu_to_le16(CIFS_WRLCK))
2470 pLockData->fl_type = F_WRLCK;
2471
2472 pLockData->fl_start = le64_to_cpu(parm_data->start);
2473 pLockData->fl_end = pLockData->fl_start +
2474 le64_to_cpu(parm_data->length) - 1;
2475 pLockData->fl_pid = le32_to_cpu(parm_data->pid);
2476 }
2477 }
2478
2479plk_err_exit:
2480 if (pSMB)
2481 cifs_small_buf_release(pSMB);
2482
2483 if (resp_buf_type == CIFS_SMALL_BUFFER)
2484 cifs_small_buf_release(iov[0].iov_base);
2485 else if (resp_buf_type == CIFS_LARGE_BUFFER)
2486 cifs_buf_release(iov[0].iov_base);
2487
2488
2489
2490
2491 return rc;
2492}
2493
2494
2495int
2496CIFSSMBClose(const int xid, struct cifs_tcon *tcon, int smb_file_id)
2497{
2498 int rc = 0;
2499 CLOSE_REQ *pSMB = NULL;
2500 cFYI(1, "In CIFSSMBClose");
2501
2502
2503 rc = small_smb_init(SMB_COM_CLOSE, 3, tcon, (void **) &pSMB);
2504 if (rc == -EAGAIN)
2505 return 0;
2506 if (rc)
2507 return rc;
2508
2509 pSMB->FileID = (__u16) smb_file_id;
2510 pSMB->LastWriteTime = 0xFFFFFFFF;
2511 pSMB->ByteCount = 0;
2512 rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0);
2513 cifs_stats_inc(&tcon->num_closes);
2514 if (rc) {
2515 if (rc != -EINTR) {
2516
2517 cERROR(1, "Send error in Close = %d", rc);
2518 }
2519 }
2520
2521
2522 if (rc == -EAGAIN)
2523 rc = 0;
2524
2525 return rc;
2526}
2527
2528int
2529CIFSSMBFlush(const int xid, struct cifs_tcon *tcon, int smb_file_id)
2530{
2531 int rc = 0;
2532 FLUSH_REQ *pSMB = NULL;
2533 cFYI(1, "In CIFSSMBFlush");
2534
2535 rc = small_smb_init(SMB_COM_FLUSH, 1, tcon, (void **) &pSMB);
2536 if (rc)
2537 return rc;
2538
2539 pSMB->FileID = (__u16) smb_file_id;
2540 pSMB->ByteCount = 0;
2541 rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0);
2542 cifs_stats_inc(&tcon->num_flushes);
2543 if (rc)
2544 cERROR(1, "Send error in Flush = %d", rc);
2545
2546 return rc;
2547}
2548
2549int
2550CIFSSMBRename(const int xid, struct cifs_tcon *tcon,
2551 const char *fromName, const char *toName,
2552 const struct nls_table *nls_codepage, int remap)
2553{
2554 int rc = 0;
2555 RENAME_REQ *pSMB = NULL;
2556 RENAME_RSP *pSMBr = NULL;
2557 int bytes_returned;
2558 int name_len, name_len2;
2559 __u16 count;
2560
2561 cFYI(1, "In CIFSSMBRename");
2562renameRetry:
2563 rc = smb_init(SMB_COM_RENAME, 1, tcon, (void **) &pSMB,
2564 (void **) &pSMBr);
2565 if (rc)
2566 return rc;
2567
2568 pSMB->BufferFormat = 0x04;
2569 pSMB->SearchAttributes =
2570 cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM |
2571 ATTR_DIRECTORY);
2572
2573 if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
2574 name_len =
2575 cifsConvertToUTF16((__le16 *) pSMB->OldFileName, fromName,
2576 PATH_MAX, nls_codepage, remap);
2577 name_len++;
2578 name_len *= 2;
2579 pSMB->OldFileName[name_len] = 0x04;
2580
2581 pSMB->OldFileName[name_len + 1] = 0x00;
2582 name_len2 =
2583 cifsConvertToUTF16((__le16 *)&pSMB->OldFileName[name_len+2],
2584 toName, PATH_MAX, nls_codepage, remap);
2585 name_len2 += 1 + 1 ;
2586 name_len2 *= 2;
2587 } else {
2588 name_len = strnlen(fromName, PATH_MAX);
2589 name_len++;
2590 strncpy(pSMB->OldFileName, fromName, name_len);
2591 name_len2 = strnlen(toName, PATH_MAX);
2592 name_len2++;
2593 pSMB->OldFileName[name_len] = 0x04;
2594 strncpy(&pSMB->OldFileName[name_len + 1], toName, name_len2);
2595 name_len2++;
2596 name_len2++;
2597 }
2598
2599 count = 1 + name_len + name_len2;
2600 inc_rfc1001_len(pSMB, count);
2601 pSMB->ByteCount = cpu_to_le16(count);
2602
2603 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
2604 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
2605 cifs_stats_inc(&tcon->num_renames);
2606 if (rc)
2607 cFYI(1, "Send error in rename = %d", rc);
2608
2609 cifs_buf_release(pSMB);
2610
2611 if (rc == -EAGAIN)
2612 goto renameRetry;
2613
2614 return rc;
2615}
2616
2617int CIFSSMBRenameOpenFile(const int xid, struct cifs_tcon *pTcon,
2618 int netfid, const char *target_name,
2619 const struct nls_table *nls_codepage, int remap)
2620{
2621 struct smb_com_transaction2_sfi_req *pSMB = NULL;
2622 struct smb_com_transaction2_sfi_rsp *pSMBr = NULL;
2623 struct set_file_rename *rename_info;
2624 char *data_offset;
2625 char dummy_string[30];
2626 int rc = 0;
2627 int bytes_returned = 0;
2628 int len_of_str;
2629 __u16 params, param_offset, offset, count, byte_count;
2630
2631 cFYI(1, "Rename to File by handle");
2632 rc = smb_init(SMB_COM_TRANSACTION2, 15, pTcon, (void **) &pSMB,
2633 (void **) &pSMBr);
2634 if (rc)
2635 return rc;
2636
2637 params = 6;
2638 pSMB->MaxSetupCount = 0;
2639 pSMB->Reserved = 0;
2640 pSMB->Flags = 0;
2641 pSMB->Timeout = 0;
2642 pSMB->Reserved2 = 0;
2643 param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4;
2644 offset = param_offset + params;
2645
2646 data_offset = (char *) (&pSMB->hdr.Protocol) + offset;
2647 rename_info = (struct set_file_rename *) data_offset;
2648 pSMB->MaxParameterCount = cpu_to_le16(2);
2649 pSMB->MaxDataCount = cpu_to_le16(1000);
2650 pSMB->SetupCount = 1;
2651 pSMB->Reserved3 = 0;
2652 pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION);
2653 byte_count = 3 + params;
2654 pSMB->ParameterCount = cpu_to_le16(params);
2655 pSMB->TotalParameterCount = pSMB->ParameterCount;
2656 pSMB->ParameterOffset = cpu_to_le16(param_offset);
2657 pSMB->DataOffset = cpu_to_le16(offset);
2658
2659 rename_info->overwrite = cpu_to_le32(1);
2660 rename_info->root_fid = 0;
2661
2662 if (target_name == NULL) {
2663 sprintf(dummy_string, "cifs%x", pSMB->hdr.Mid);
2664 len_of_str =
2665 cifsConvertToUTF16((__le16 *)rename_info->target_name,
2666 dummy_string, 24, nls_codepage, remap);
2667 } else {
2668 len_of_str =
2669 cifsConvertToUTF16((__le16 *)rename_info->target_name,
2670 target_name, PATH_MAX, nls_codepage,
2671 remap);
2672 }
2673 rename_info->target_name_len = cpu_to_le32(2 * len_of_str);
2674 count = 12 + (2 * len_of_str);
2675 byte_count += count;
2676 pSMB->DataCount = cpu_to_le16(count);
2677 pSMB->TotalDataCount = pSMB->DataCount;
2678 pSMB->Fid = netfid;
2679 pSMB->InformationLevel =
2680 cpu_to_le16(SMB_SET_FILE_RENAME_INFORMATION);
2681 pSMB->Reserved4 = 0;
2682 inc_rfc1001_len(pSMB, byte_count);
2683 pSMB->ByteCount = cpu_to_le16(byte_count);
2684 rc = SendReceive(xid, pTcon->ses, (struct smb_hdr *) pSMB,
2685 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
2686 cifs_stats_inc(&pTcon->num_t2renames);
2687 if (rc)
2688 cFYI(1, "Send error in Rename (by file handle) = %d", rc);
2689
2690 cifs_buf_release(pSMB);
2691
2692
2693
2694
2695 return rc;
2696}
2697
2698int
2699CIFSSMBCopy(const int xid, struct cifs_tcon *tcon, const char *fromName,
2700 const __u16 target_tid, const char *toName, const int flags,
2701 const struct nls_table *nls_codepage, int remap)
2702{
2703 int rc = 0;
2704 COPY_REQ *pSMB = NULL;
2705 COPY_RSP *pSMBr = NULL;
2706 int bytes_returned;
2707 int name_len, name_len2;
2708 __u16 count;
2709
2710 cFYI(1, "In CIFSSMBCopy");
2711copyRetry:
2712 rc = smb_init(SMB_COM_COPY, 1, tcon, (void **) &pSMB,
2713 (void **) &pSMBr);
2714 if (rc)
2715 return rc;
2716
2717 pSMB->BufferFormat = 0x04;
2718 pSMB->Tid2 = target_tid;
2719
2720 pSMB->Flags = cpu_to_le16(flags & COPY_TREE);
2721
2722 if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
2723 name_len = cifsConvertToUTF16((__le16 *) pSMB->OldFileName,
2724 fromName, PATH_MAX, nls_codepage,
2725 remap);
2726 name_len++;
2727 name_len *= 2;
2728 pSMB->OldFileName[name_len] = 0x04;
2729
2730 pSMB->OldFileName[name_len + 1] = 0x00;
2731 name_len2 =
2732 cifsConvertToUTF16((__le16 *)&pSMB->OldFileName[name_len+2],
2733 toName, PATH_MAX, nls_codepage, remap);
2734 name_len2 += 1 + 1 ;
2735 name_len2 *= 2;
2736 } else {
2737 name_len = strnlen(fromName, PATH_MAX);
2738 name_len++;
2739 strncpy(pSMB->OldFileName, fromName, name_len);
2740 name_len2 = strnlen(toName, PATH_MAX);
2741 name_len2++;
2742 pSMB->OldFileName[name_len] = 0x04;
2743 strncpy(&pSMB->OldFileName[name_len + 1], toName, name_len2);
2744 name_len2++;
2745 name_len2++;
2746 }
2747
2748 count = 1 + name_len + name_len2;
2749 inc_rfc1001_len(pSMB, count);
2750 pSMB->ByteCount = cpu_to_le16(count);
2751
2752 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
2753 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
2754 if (rc) {
2755 cFYI(1, "Send error in copy = %d with %d files copied",
2756 rc, le16_to_cpu(pSMBr->CopyCount));
2757 }
2758 cifs_buf_release(pSMB);
2759
2760 if (rc == -EAGAIN)
2761 goto copyRetry;
2762
2763 return rc;
2764}
2765
2766int
2767CIFSUnixCreateSymLink(const int xid, struct cifs_tcon *tcon,
2768 const char *fromName, const char *toName,
2769 const struct nls_table *nls_codepage)
2770{
2771 TRANSACTION2_SPI_REQ *pSMB = NULL;
2772 TRANSACTION2_SPI_RSP *pSMBr = NULL;
2773 char *data_offset;
2774 int name_len;
2775 int name_len_target;
2776 int rc = 0;
2777 int bytes_returned = 0;
2778 __u16 params, param_offset, offset, byte_count;
2779
2780 cFYI(1, "In Symlink Unix style");
2781createSymLinkRetry:
2782 rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
2783 (void **) &pSMBr);
2784 if (rc)
2785 return rc;
2786
2787 if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
2788 name_len =
2789 cifs_strtoUTF16((__le16 *) pSMB->FileName, fromName,
2790
2791 PATH_MAX, nls_codepage);
2792 name_len++;
2793 name_len *= 2;
2794
2795 } else {
2796 name_len = strnlen(fromName, PATH_MAX);
2797 name_len++;
2798 strncpy(pSMB->FileName, fromName, name_len);
2799 }
2800 params = 6 + name_len;
2801 pSMB->MaxSetupCount = 0;
2802 pSMB->Reserved = 0;
2803 pSMB->Flags = 0;
2804 pSMB->Timeout = 0;
2805 pSMB->Reserved2 = 0;
2806 param_offset = offsetof(struct smb_com_transaction2_spi_req,
2807 InformationLevel) - 4;
2808 offset = param_offset + params;
2809
2810 data_offset = (char *) (&pSMB->hdr.Protocol) + offset;
2811 if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
2812 name_len_target =
2813 cifs_strtoUTF16((__le16 *) data_offset, toName, PATH_MAX
2814
2815 , nls_codepage);
2816 name_len_target++;
2817 name_len_target *= 2;
2818 } else {
2819 name_len_target = strnlen(toName, PATH_MAX);
2820 name_len_target++;
2821 strncpy(data_offset, toName, name_len_target);
2822 }
2823
2824 pSMB->MaxParameterCount = cpu_to_le16(2);
2825
2826 pSMB->MaxDataCount = cpu_to_le16(1000);
2827 pSMB->SetupCount = 1;
2828 pSMB->Reserved3 = 0;
2829 pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION);
2830 byte_count = 3 + params + name_len_target;
2831 pSMB->DataCount = cpu_to_le16(name_len_target);
2832 pSMB->ParameterCount = cpu_to_le16(params);
2833 pSMB->TotalDataCount = pSMB->DataCount;
2834 pSMB->TotalParameterCount = pSMB->ParameterCount;
2835 pSMB->ParameterOffset = cpu_to_le16(param_offset);
2836 pSMB->DataOffset = cpu_to_le16(offset);
2837 pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_LINK);
2838 pSMB->Reserved4 = 0;
2839 inc_rfc1001_len(pSMB, byte_count);
2840 pSMB->ByteCount = cpu_to_le16(byte_count);
2841 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
2842 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
2843 cifs_stats_inc(&tcon->num_symlinks);
2844 if (rc)
2845 cFYI(1, "Send error in SetPathInfo create symlink = %d", rc);
2846
2847 cifs_buf_release(pSMB);
2848
2849 if (rc == -EAGAIN)
2850 goto createSymLinkRetry;
2851
2852 return rc;
2853}
2854
2855int
2856CIFSUnixCreateHardLink(const int xid, struct cifs_tcon *tcon,
2857 const char *fromName, const char *toName,
2858 const struct nls_table *nls_codepage, int remap)
2859{
2860 TRANSACTION2_SPI_REQ *pSMB = NULL;
2861 TRANSACTION2_SPI_RSP *pSMBr = NULL;
2862 char *data_offset;
2863 int name_len;
2864 int name_len_target;
2865 int rc = 0;
2866 int bytes_returned = 0;
2867 __u16 params, param_offset, offset, byte_count;
2868
2869 cFYI(1, "In Create Hard link Unix style");
2870createHardLinkRetry:
2871 rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
2872 (void **) &pSMBr);
2873 if (rc)
2874 return rc;
2875
2876 if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
2877 name_len = cifsConvertToUTF16((__le16 *) pSMB->FileName, toName,
2878 PATH_MAX, nls_codepage, remap);
2879 name_len++;
2880 name_len *= 2;
2881
2882 } else {
2883 name_len = strnlen(toName, PATH_MAX);
2884 name_len++;
2885 strncpy(pSMB->FileName, toName, name_len);
2886 }
2887 params = 6 + name_len;
2888 pSMB->MaxSetupCount = 0;
2889 pSMB->Reserved = 0;
2890 pSMB->Flags = 0;
2891 pSMB->Timeout = 0;
2892 pSMB->Reserved2 = 0;
2893 param_offset = offsetof(struct smb_com_transaction2_spi_req,
2894 InformationLevel) - 4;
2895 offset = param_offset + params;
2896
2897 data_offset = (char *) (&pSMB->hdr.Protocol) + offset;
2898 if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
2899 name_len_target =
2900 cifsConvertToUTF16((__le16 *) data_offset, fromName,
2901 PATH_MAX, nls_codepage, remap);
2902 name_len_target++;
2903 name_len_target *= 2;
2904 } else {
2905 name_len_target = strnlen(fromName, PATH_MAX);
2906 name_len_target++;
2907 strncpy(data_offset, fromName, name_len_target);
2908 }
2909
2910 pSMB->MaxParameterCount = cpu_to_le16(2);
2911
2912 pSMB->MaxDataCount = cpu_to_le16(1000);
2913 pSMB->SetupCount = 1;
2914 pSMB->Reserved3 = 0;
2915 pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION);
2916 byte_count = 3 + params + name_len_target;
2917 pSMB->ParameterCount = cpu_to_le16(params);
2918 pSMB->TotalParameterCount = pSMB->ParameterCount;
2919 pSMB->DataCount = cpu_to_le16(name_len_target);
2920 pSMB->TotalDataCount = pSMB->DataCount;
2921 pSMB->ParameterOffset = cpu_to_le16(param_offset);
2922 pSMB->DataOffset = cpu_to_le16(offset);
2923 pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_HLINK);
2924 pSMB->Reserved4 = 0;
2925 inc_rfc1001_len(pSMB, byte_count);
2926 pSMB->ByteCount = cpu_to_le16(byte_count);
2927 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
2928 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
2929 cifs_stats_inc(&tcon->num_hardlinks);
2930 if (rc)
2931 cFYI(1, "Send error in SetPathInfo (hard link) = %d", rc);
2932
2933 cifs_buf_release(pSMB);
2934 if (rc == -EAGAIN)
2935 goto createHardLinkRetry;
2936
2937 return rc;
2938}
2939
2940int
2941CIFSCreateHardLink(const int xid, struct cifs_tcon *tcon,
2942 const char *fromName, const char *toName,
2943 const struct nls_table *nls_codepage, int remap)
2944{
2945 int rc = 0;
2946 NT_RENAME_REQ *pSMB = NULL;
2947 RENAME_RSP *pSMBr = NULL;
2948 int bytes_returned;
2949 int name_len, name_len2;
2950 __u16 count;
2951
2952 cFYI(1, "In CIFSCreateHardLink");
2953winCreateHardLinkRetry:
2954
2955 rc = smb_init(SMB_COM_NT_RENAME, 4, tcon, (void **) &pSMB,
2956 (void **) &pSMBr);
2957 if (rc)
2958 return rc;
2959
2960 pSMB->SearchAttributes =
2961 cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM |
2962 ATTR_DIRECTORY);
2963 pSMB->Flags = cpu_to_le16(CREATE_HARD_LINK);
2964 pSMB->ClusterCount = 0;
2965
2966 pSMB->BufferFormat = 0x04;
2967
2968 if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
2969 name_len =
2970 cifsConvertToUTF16((__le16 *) pSMB->OldFileName, fromName,
2971 PATH_MAX, nls_codepage, remap);
2972 name_len++;
2973 name_len *= 2;
2974
2975
2976 pSMB->OldFileName[name_len] = 0x04;
2977 pSMB->OldFileName[name_len + 1] = 0x00;
2978 name_len2 =
2979 cifsConvertToUTF16((__le16 *)&pSMB->OldFileName[name_len+2],
2980 toName, PATH_MAX, nls_codepage, remap);
2981 name_len2 += 1 + 1 ;
2982 name_len2 *= 2;
2983 } else {
2984 name_len = strnlen(fromName, PATH_MAX);
2985 name_len++;
2986 strncpy(pSMB->OldFileName, fromName, name_len);
2987 name_len2 = strnlen(toName, PATH_MAX);
2988 name_len2++;
2989 pSMB->OldFileName[name_len] = 0x04;
2990 strncpy(&pSMB->OldFileName[name_len + 1], toName, name_len2);
2991 name_len2++;
2992 name_len2++;
2993 }
2994
2995 count = 1 + name_len + name_len2;
2996 inc_rfc1001_len(pSMB, count);
2997 pSMB->ByteCount = cpu_to_le16(count);
2998
2999 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
3000 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
3001 cifs_stats_inc(&tcon->num_hardlinks);
3002 if (rc)
3003 cFYI(1, "Send error in hard link (NT rename) = %d", rc);
3004
3005 cifs_buf_release(pSMB);
3006 if (rc == -EAGAIN)
3007 goto winCreateHardLinkRetry;
3008
3009 return rc;
3010}
3011
3012int
3013CIFSSMBUnixQuerySymLink(const int xid, struct cifs_tcon *tcon,
3014 const unsigned char *searchName, char **symlinkinfo,
3015 const struct nls_table *nls_codepage)
3016{
3017
3018 TRANSACTION2_QPI_REQ *pSMB = NULL;
3019 TRANSACTION2_QPI_RSP *pSMBr = NULL;
3020 int rc = 0;
3021 int bytes_returned;
3022 int name_len;
3023 __u16 params, byte_count;
3024 char *data_start;
3025
3026 cFYI(1, "In QPathSymLinkInfo (Unix) for path %s", searchName);
3027
3028querySymLinkRetry:
3029 rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
3030 (void **) &pSMBr);
3031 if (rc)
3032 return rc;
3033
3034 if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
3035 name_len =
3036 cifs_strtoUTF16((__le16 *) pSMB->FileName, searchName,
3037 PATH_MAX, nls_codepage);
3038 name_len++;
3039 name_len *= 2;
3040 } else {
3041 name_len = strnlen(searchName, PATH_MAX);
3042 name_len++;
3043 strncpy(pSMB->FileName, searchName, name_len);
3044 }
3045
3046 params = 2 + 4 + name_len ;
3047 pSMB->TotalDataCount = 0;
3048 pSMB->MaxParameterCount = cpu_to_le16(2);
3049 pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize);
3050 pSMB->MaxSetupCount = 0;
3051 pSMB->Reserved = 0;
3052 pSMB->Flags = 0;
3053 pSMB->Timeout = 0;
3054 pSMB->Reserved2 = 0;
3055 pSMB->ParameterOffset = cpu_to_le16(offsetof(
3056 struct smb_com_transaction2_qpi_req, InformationLevel) - 4);
3057 pSMB->DataCount = 0;
3058 pSMB->DataOffset = 0;
3059 pSMB->SetupCount = 1;
3060 pSMB->Reserved3 = 0;
3061 pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION);
3062 byte_count = params + 1 ;
3063 pSMB->TotalParameterCount = cpu_to_le16(params);
3064 pSMB->ParameterCount = pSMB->TotalParameterCount;
3065 pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_LINK);
3066 pSMB->Reserved4 = 0;
3067 inc_rfc1001_len(pSMB, byte_count);
3068 pSMB->ByteCount = cpu_to_le16(byte_count);
3069
3070 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
3071 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
3072 if (rc) {
3073 cFYI(1, "Send error in QuerySymLinkInfo = %d", rc);
3074 } else {
3075
3076
3077 rc = validate_t2((struct smb_t2_rsp *)pSMBr);
3078
3079 if (rc || get_bcc(&pSMBr->hdr) < 2)
3080 rc = -EIO;
3081 else {
3082 bool is_unicode;
3083 u16 count = le16_to_cpu(pSMBr->t2.DataCount);
3084
3085 data_start = ((char *) &pSMBr->hdr.Protocol) +
3086 le16_to_cpu(pSMBr->t2.DataOffset);
3087
3088 if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE)
3089 is_unicode = true;
3090 else
3091 is_unicode = false;
3092
3093
3094 *symlinkinfo = cifs_strndup_from_utf16(data_start,
3095 count, is_unicode, nls_codepage);
3096 if (!*symlinkinfo)
3097 rc = -ENOMEM;
3098 }
3099 }
3100 cifs_buf_release(pSMB);
3101 if (rc == -EAGAIN)
3102 goto querySymLinkRetry;
3103 return rc;
3104}
3105
3106#ifdef CONFIG_CIFS_SYMLINK_EXPERIMENTAL
3107
3108
3109
3110
3111
3112
3113
3114
3115
3116
3117int
3118CIFSSMBQueryReparseLinkInfo(const int xid, struct cifs_tcon *tcon,
3119 const unsigned char *searchName,
3120 char *symlinkinfo, const int buflen, __u16 fid,
3121 const struct nls_table *nls_codepage)
3122{
3123 int rc = 0;
3124 int bytes_returned;
3125 struct smb_com_transaction_ioctl_req *pSMB;
3126 struct smb_com_transaction_ioctl_rsp *pSMBr;
3127
3128 cFYI(1, "In Windows reparse style QueryLink for path %s", searchName);
3129 rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB,
3130 (void **) &pSMBr);
3131 if (rc)
3132 return rc;
3133
3134 pSMB->TotalParameterCount = 0 ;
3135 pSMB->TotalDataCount = 0;
3136 pSMB->MaxParameterCount = cpu_to_le32(2);
3137
3138 pSMB->MaxDataCount = cpu_to_le32(CIFSMaxBufSize & 0xFFFFFF00);
3139 pSMB->MaxSetupCount = 4;
3140 pSMB->Reserved = 0;
3141 pSMB->ParameterOffset = 0;
3142 pSMB->DataCount = 0;
3143 pSMB->DataOffset = 0;
3144 pSMB->SetupCount = 4;
3145 pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_IOCTL);
3146 pSMB->ParameterCount = pSMB->TotalParameterCount;
3147 pSMB->FunctionCode = cpu_to_le32(FSCTL_GET_REPARSE_POINT);
3148 pSMB->IsFsctl = 1;
3149 pSMB->IsRootFlag = 0;
3150 pSMB->Fid = fid;
3151 pSMB->ByteCount = 0;
3152
3153 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
3154 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
3155 if (rc) {
3156 cFYI(1, "Send error in QueryReparseLinkInfo = %d", rc);
3157 } else {
3158 __u32 data_offset = le32_to_cpu(pSMBr->DataOffset);
3159 __u32 data_count = le32_to_cpu(pSMBr->DataCount);
3160 if (get_bcc(&pSMBr->hdr) < 2 || data_offset > 512) {
3161
3162 rc = -EIO;
3163 goto qreparse_out;
3164 }
3165 if (data_count && (data_count < 2048)) {
3166 char *end_of_smb = 2 +
3167 get_bcc(&pSMBr->hdr) + (char *)&pSMBr->ByteCount;
3168
3169 struct reparse_data *reparse_buf =
3170 (struct reparse_data *)
3171 ((char *)&pSMBr->hdr.Protocol
3172 + data_offset);
3173 if ((char *)reparse_buf >= end_of_smb) {
3174 rc = -EIO;
3175 goto qreparse_out;
3176 }
3177 if ((reparse_buf->LinkNamesBuf +
3178 reparse_buf->TargetNameOffset +
3179 reparse_buf->TargetNameLen) > end_of_smb) {
3180 cFYI(1, "reparse buf beyond SMB");
3181 rc = -EIO;
3182 goto qreparse_out;
3183 }
3184
3185 if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) {
3186 cifs_from_ucs2(symlinkinfo, (__le16 *)
3187 (reparse_buf->LinkNamesBuf +
3188 reparse_buf->TargetNameOffset),
3189 buflen,
3190 reparse_buf->TargetNameLen,
3191 nls_codepage, 0);
3192 } else {
3193 strncpy(symlinkinfo,
3194 reparse_buf->LinkNamesBuf +
3195 reparse_buf->TargetNameOffset,
3196 min_t(const int, buflen,
3197 reparse_buf->TargetNameLen));
3198 }
3199 } else {
3200 rc = -EIO;
3201 cFYI(1, "Invalid return data count on "
3202 "get reparse info ioctl");
3203 }
3204 symlinkinfo[buflen] = 0;
3205
3206 cFYI(1, "readlink result - %s", symlinkinfo);
3207 }
3208
3209qreparse_out:
3210 cifs_buf_release(pSMB);
3211
3212
3213
3214
3215 return rc;
3216}
3217#endif
3218
3219#ifdef CONFIG_CIFS_POSIX
3220
3221
3222static void cifs_convert_ace(posix_acl_xattr_entry *ace,
3223 struct cifs_posix_ace *cifs_ace)
3224{
3225
3226 ace->e_perm = cpu_to_le16(cifs_ace->cifs_e_perm);
3227 ace->e_tag = cpu_to_le16(cifs_ace->cifs_e_tag);
3228 ace->e_id = cpu_to_le32(le64_to_cpu(cifs_ace->cifs_uid));
3229
3230
3231 return;
3232}
3233
3234
3235static int cifs_copy_posix_acl(char *trgt, char *src, const int buflen,
3236 const int acl_type, const int size_of_data_area)
3237{
3238 int size = 0;
3239 int i;
3240 __u16 count;
3241 struct cifs_posix_ace *pACE;
3242 struct cifs_posix_acl *cifs_acl = (struct cifs_posix_acl *)src;
3243 posix_acl_xattr_header *local_acl = (posix_acl_xattr_header *)trgt;
3244
3245 if (le16_to_cpu(cifs_acl->version) != CIFS_ACL_VERSION)
3246 return -EOPNOTSUPP;
3247
3248 if (acl_type & ACL_TYPE_ACCESS) {
3249 count = le16_to_cpu(cifs_acl->access_entry_count);
3250 pACE = &cifs_acl->ace_array[0];
3251 size = sizeof(struct cifs_posix_acl);
3252 size += sizeof(struct cifs_posix_ace) * count;
3253
3254 if (size_of_data_area < size) {
3255 cFYI(1, "bad CIFS POSIX ACL size %d vs. %d",
3256 size_of_data_area, size);
3257 return -EINVAL;
3258 }
3259 } else if (acl_type & ACL_TYPE_DEFAULT) {
3260 count = le16_to_cpu(cifs_acl->access_entry_count);
3261 size = sizeof(struct cifs_posix_acl);
3262 size += sizeof(struct cifs_posix_ace) * count;
3263
3264 pACE = &cifs_acl->ace_array[count];
3265 count = le16_to_cpu(cifs_acl->default_entry_count);
3266 size += sizeof(struct cifs_posix_ace) * count;
3267
3268 if (size_of_data_area < size)
3269 return -EINVAL;
3270 } else {
3271
3272 return -EINVAL;
3273 }
3274
3275 size = posix_acl_xattr_size(count);
3276 if ((buflen == 0) || (local_acl == NULL)) {
3277
3278 } else if (size > buflen) {
3279 return -ERANGE;
3280 } else {
3281 local_acl->a_version = cpu_to_le32(POSIX_ACL_XATTR_VERSION);
3282 for (i = 0; i < count ; i++) {
3283 cifs_convert_ace(&local_acl->a_entries[i], pACE);
3284 pACE++;
3285 }
3286 }
3287 return size;
3288}
3289
3290static __u16 convert_ace_to_cifs_ace(struct cifs_posix_ace *cifs_ace,
3291 const posix_acl_xattr_entry *local_ace)
3292{
3293 __u16 rc = 0;
3294
3295 cifs_ace->cifs_e_perm = le16_to_cpu(local_ace->e_perm);
3296 cifs_ace->cifs_e_tag = le16_to_cpu(local_ace->e_tag);
3297
3298 if (local_ace->e_id == cpu_to_le32(-1)) {
3299
3300 cifs_ace->cifs_uid = cpu_to_le64(-1);
3301 } else
3302 cifs_ace->cifs_uid = cpu_to_le64(le32_to_cpu(local_ace->e_id));
3303
3304 return rc;
3305}
3306
3307
3308static __u16 ACL_to_cifs_posix(char *parm_data, const char *pACL,
3309 const int buflen, const int acl_type)
3310{
3311 __u16 rc = 0;
3312 struct cifs_posix_acl *cifs_acl = (struct cifs_posix_acl *)parm_data;
3313 posix_acl_xattr_header *local_acl = (posix_acl_xattr_header *)pACL;
3314 int count;
3315 int i;
3316
3317 if ((buflen == 0) || (pACL == NULL) || (cifs_acl == NULL))
3318 return 0;
3319
3320 count = posix_acl_xattr_count((size_t)buflen);
3321 cFYI(1, "setting acl with %d entries from buf of length %d and "
3322 "version of %d",
3323 count, buflen, le32_to_cpu(local_acl->a_version));
3324 if (le32_to_cpu(local_acl->a_version) != 2) {
3325 cFYI(1, "unknown POSIX ACL version %d",
3326 le32_to_cpu(local_acl->a_version));
3327 return 0;
3328 }
3329 cifs_acl->version = cpu_to_le16(1);
3330 if (acl_type == ACL_TYPE_ACCESS)
3331 cifs_acl->access_entry_count = cpu_to_le16(count);
3332 else if (acl_type == ACL_TYPE_DEFAULT)
3333 cifs_acl->default_entry_count = cpu_to_le16(count);
3334 else {
3335 cFYI(1, "unknown ACL type %d", acl_type);
3336 return 0;
3337 }
3338 for (i = 0; i < count; i++) {
3339 rc = convert_ace_to_cifs_ace(&cifs_acl->ace_array[i],
3340 &local_acl->a_entries[i]);
3341 if (rc != 0) {
3342
3343 break;
3344 }
3345 }
3346 if (rc == 0) {
3347 rc = (__u16)(count * sizeof(struct cifs_posix_ace));
3348 rc += sizeof(struct cifs_posix_acl);
3349
3350 }
3351 return rc;
3352}
3353
3354int
3355CIFSSMBGetPosixACL(const int xid, struct cifs_tcon *tcon,
3356 const unsigned char *searchName,
3357 char *acl_inf, const int buflen, const int acl_type,
3358 const struct nls_table *nls_codepage, int remap)
3359{
3360
3361 TRANSACTION2_QPI_REQ *pSMB = NULL;
3362 TRANSACTION2_QPI_RSP *pSMBr = NULL;
3363 int rc = 0;
3364 int bytes_returned;
3365 int name_len;
3366 __u16 params, byte_count;
3367
3368 cFYI(1, "In GetPosixACL (Unix) for path %s", searchName);
3369
3370queryAclRetry:
3371 rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
3372 (void **) &pSMBr);
3373 if (rc)
3374 return rc;
3375
3376 if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
3377 name_len =
3378 cifsConvertToUTF16((__le16 *) pSMB->FileName,
3379 searchName, PATH_MAX, nls_codepage,
3380 remap);
3381 name_len++;
3382 name_len *= 2;
3383 pSMB->FileName[name_len] = 0;
3384 pSMB->FileName[name_len+1] = 0;
3385 } else {
3386 name_len = strnlen(searchName, PATH_MAX);
3387 name_len++;
3388 strncpy(pSMB->FileName, searchName, name_len);
3389 }
3390
3391 params = 2 + 4 + name_len ;
3392 pSMB->TotalDataCount = 0;
3393 pSMB->MaxParameterCount = cpu_to_le16(2);
3394
3395 pSMB->MaxDataCount = cpu_to_le16(4000);
3396 pSMB->MaxSetupCount = 0;
3397 pSMB->Reserved = 0;
3398 pSMB->Flags = 0;
3399 pSMB->Timeout = 0;
3400 pSMB->Reserved2 = 0;
3401 pSMB->ParameterOffset = cpu_to_le16(
3402 offsetof(struct smb_com_transaction2_qpi_req,
3403 InformationLevel) - 4);
3404 pSMB->DataCount = 0;
3405 pSMB->DataOffset = 0;
3406 pSMB->SetupCount = 1;
3407 pSMB->Reserved3 = 0;
3408 pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION);
3409 byte_count = params + 1 ;
3410 pSMB->TotalParameterCount = cpu_to_le16(params);
3411 pSMB->ParameterCount = pSMB->TotalParameterCount;
3412 pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_POSIX_ACL);
3413 pSMB->Reserved4 = 0;
3414 inc_rfc1001_len(pSMB, byte_count);
3415 pSMB->ByteCount = cpu_to_le16(byte_count);
3416
3417 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
3418 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
3419 cifs_stats_inc(&tcon->num_acl_get);
3420 if (rc) {
3421 cFYI(1, "Send error in Query POSIX ACL = %d", rc);
3422 } else {
3423
3424
3425 rc = validate_t2((struct smb_t2_rsp *)pSMBr);
3426
3427 if (rc || get_bcc(&pSMBr->hdr) < 2)
3428 rc = -EIO;
3429 else {
3430 __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
3431 __u16 count = le16_to_cpu(pSMBr->t2.DataCount);
3432 rc = cifs_copy_posix_acl(acl_inf,
3433 (char *)&pSMBr->hdr.Protocol+data_offset,
3434 buflen, acl_type, count);
3435 }
3436 }
3437 cifs_buf_release(pSMB);
3438 if (rc == -EAGAIN)
3439 goto queryAclRetry;
3440 return rc;
3441}
3442
3443int
3444CIFSSMBSetPosixACL(const int xid, struct cifs_tcon *tcon,
3445 const unsigned char *fileName,
3446 const char *local_acl, const int buflen,
3447 const int acl_type,
3448 const struct nls_table *nls_codepage, int remap)
3449{
3450 struct smb_com_transaction2_spi_req *pSMB = NULL;
3451 struct smb_com_transaction2_spi_rsp *pSMBr = NULL;
3452 char *parm_data;
3453 int name_len;
3454 int rc = 0;
3455 int bytes_returned = 0;
3456 __u16 params, byte_count, data_count, param_offset, offset;
3457
3458 cFYI(1, "In SetPosixACL (Unix) for path %s", fileName);
3459setAclRetry:
3460 rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
3461 (void **) &pSMBr);
3462 if (rc)
3463 return rc;
3464 if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
3465 name_len =
3466 cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName,
3467 PATH_MAX, nls_codepage, remap);
3468 name_len++;
3469 name_len *= 2;
3470 } else {
3471 name_len = strnlen(fileName, PATH_MAX);
3472 name_len++;
3473 strncpy(pSMB->FileName, fileName, name_len);
3474 }
3475 params = 6 + name_len;
3476 pSMB->MaxParameterCount = cpu_to_le16(2);
3477
3478 pSMB->MaxDataCount = cpu_to_le16(1000);
3479 pSMB->MaxSetupCount = 0;
3480 pSMB->Reserved = 0;
3481 pSMB->Flags = 0;
3482 pSMB->Timeout = 0;
3483 pSMB->Reserved2 = 0;
3484 param_offset = offsetof(struct smb_com_transaction2_spi_req,
3485 InformationLevel) - 4;
3486 offset = param_offset + params;
3487 parm_data = ((char *) &pSMB->hdr.Protocol) + offset;
3488 pSMB->ParameterOffset = cpu_to_le16(param_offset);
3489
3490
3491 data_count = ACL_to_cifs_posix(parm_data, local_acl, buflen, acl_type);
3492
3493 if (data_count == 0) {
3494 rc = -EOPNOTSUPP;
3495 goto setACLerrorExit;
3496 }
3497 pSMB->DataOffset = cpu_to_le16(offset);
3498 pSMB->SetupCount = 1;
3499 pSMB->Reserved3 = 0;
3500 pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION);
3501 pSMB->InformationLevel = cpu_to_le16(SMB_SET_POSIX_ACL);
3502 byte_count = 3 + params + data_count;
3503 pSMB->DataCount = cpu_to_le16(data_count);
3504 pSMB->TotalDataCount = pSMB->DataCount;
3505 pSMB->ParameterCount = cpu_to_le16(params);
3506 pSMB->TotalParameterCount = pSMB->ParameterCount;
3507 pSMB->Reserved4 = 0;
3508 inc_rfc1001_len(pSMB, byte_count);
3509 pSMB->ByteCount = cpu_to_le16(byte_count);
3510 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
3511 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
3512 if (rc)
3513 cFYI(1, "Set POSIX ACL returned %d", rc);
3514
3515setACLerrorExit:
3516 cifs_buf_release(pSMB);
3517 if (rc == -EAGAIN)
3518 goto setAclRetry;
3519 return rc;
3520}
3521
3522
3523int
3524CIFSGetExtAttr(const int xid, struct cifs_tcon *tcon,
3525 const int netfid, __u64 *pExtAttrBits, __u64 *pMask)
3526{
3527 int rc = 0;
3528 struct smb_t2_qfi_req *pSMB = NULL;
3529 struct smb_t2_qfi_rsp *pSMBr = NULL;
3530 int bytes_returned;
3531 __u16 params, byte_count;
3532
3533 cFYI(1, "In GetExtAttr");
3534 if (tcon == NULL)
3535 return -ENODEV;
3536
3537GetExtAttrRetry:
3538 rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
3539 (void **) &pSMBr);
3540 if (rc)
3541 return rc;
3542
3543 params = 2 + 2 ;
3544 pSMB->t2.TotalDataCount = 0;
3545 pSMB->t2.MaxParameterCount = cpu_to_le16(4);
3546
3547 pSMB->t2.MaxDataCount = cpu_to_le16(4000);
3548 pSMB->t2.MaxSetupCount = 0;
3549 pSMB->t2.Reserved = 0;
3550 pSMB->t2.Flags = 0;
3551 pSMB->t2.Timeout = 0;
3552 pSMB->t2.Reserved2 = 0;
3553 pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req,
3554 Fid) - 4);
3555 pSMB->t2.DataCount = 0;
3556 pSMB->t2.DataOffset = 0;
3557 pSMB->t2.SetupCount = 1;
3558 pSMB->t2.Reserved3 = 0;
3559 pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION);
3560 byte_count = params + 1 ;
3561 pSMB->t2.TotalParameterCount = cpu_to_le16(params);
3562 pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount;
3563 pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_ATTR_FLAGS);
3564 pSMB->Pad = 0;
3565 pSMB->Fid = netfid;
3566 inc_rfc1001_len(pSMB, byte_count);
3567 pSMB->t2.ByteCount = cpu_to_le16(byte_count);
3568
3569 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
3570 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
3571 if (rc) {
3572 cFYI(1, "error %d in GetExtAttr", rc);
3573 } else {
3574
3575 rc = validate_t2((struct smb_t2_rsp *)pSMBr);
3576
3577 if (rc || get_bcc(&pSMBr->hdr) < 2)
3578
3579
3580 rc = -EIO;
3581 else {
3582 __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
3583 __u16 count = le16_to_cpu(pSMBr->t2.DataCount);
3584 struct file_chattr_info *pfinfo;
3585
3586 if (count != 16) {
3587 cFYI(1, "Illegal size ret in GetExtAttr");
3588 rc = -EIO;
3589 goto GetExtAttrOut;
3590 }
3591 pfinfo = (struct file_chattr_info *)
3592 (data_offset + (char *) &pSMBr->hdr.Protocol);
3593 *pExtAttrBits = le64_to_cpu(pfinfo->mode);
3594 *pMask = le64_to_cpu(pfinfo->mask);
3595 }
3596 }
3597GetExtAttrOut:
3598 cifs_buf_release(pSMB);
3599 if (rc == -EAGAIN)
3600 goto GetExtAttrRetry;
3601 return rc;
3602}
3603
3604#endif
3605
3606#ifdef CONFIG_CIFS_ACL
3607
3608
3609
3610
3611
3612
3613
3614
3615static int
3616smb_init_nttransact(const __u16 sub_command, const int setup_count,
3617 const int parm_len, struct cifs_tcon *tcon,
3618 void **ret_buf)
3619{
3620 int rc;
3621 __u32 temp_offset;
3622 struct smb_com_ntransact_req *pSMB;
3623
3624 rc = small_smb_init(SMB_COM_NT_TRANSACT, 19 + setup_count, tcon,
3625 (void **)&pSMB);
3626 if (rc)
3627 return rc;
3628 *ret_buf = (void *)pSMB;
3629 pSMB->Reserved = 0;
3630 pSMB->TotalParameterCount = cpu_to_le32(parm_len);
3631 pSMB->TotalDataCount = 0;
3632 pSMB->MaxDataCount = cpu_to_le32(CIFSMaxBufSize & 0xFFFFFF00);
3633 pSMB->ParameterCount = pSMB->TotalParameterCount;
3634 pSMB->DataCount = pSMB->TotalDataCount;
3635 temp_offset = offsetof(struct smb_com_ntransact_req, Parms) +
3636 (setup_count * 2) - 4 ;
3637 pSMB->ParameterOffset = cpu_to_le32(temp_offset);
3638 pSMB->DataOffset = cpu_to_le32(temp_offset + parm_len);
3639 pSMB->SetupCount = setup_count;
3640 pSMB->SubCommand = cpu_to_le16(sub_command);
3641 return 0;
3642}
3643
3644static int
3645validate_ntransact(char *buf, char **ppparm, char **ppdata,
3646 __u32 *pparmlen, __u32 *pdatalen)
3647{
3648 char *end_of_smb;
3649 __u32 data_count, data_offset, parm_count, parm_offset;
3650 struct smb_com_ntransact_rsp *pSMBr;
3651 u16 bcc;
3652
3653 *pdatalen = 0;
3654 *pparmlen = 0;
3655
3656 if (buf == NULL)
3657 return -EINVAL;
3658
3659 pSMBr = (struct smb_com_ntransact_rsp *)buf;
3660
3661 bcc = get_bcc(&pSMBr->hdr);
3662 end_of_smb = 2 + bcc +
3663 (char *)&pSMBr->ByteCount;
3664
3665 data_offset = le32_to_cpu(pSMBr->DataOffset);
3666 data_count = le32_to_cpu(pSMBr->DataCount);
3667 parm_offset = le32_to_cpu(pSMBr->ParameterOffset);
3668 parm_count = le32_to_cpu(pSMBr->ParameterCount);
3669
3670 *ppparm = (char *)&pSMBr->hdr.Protocol + parm_offset;
3671 *ppdata = (char *)&pSMBr->hdr.Protocol + data_offset;
3672
3673
3674 if (*ppparm > end_of_smb) {
3675 cFYI(1, "parms start after end of smb");
3676 return -EINVAL;
3677 } else if (parm_count + *ppparm > end_of_smb) {
3678 cFYI(1, "parm end after end of smb");
3679 return -EINVAL;
3680 } else if (*ppdata > end_of_smb) {
3681 cFYI(1, "data starts after end of smb");
3682 return -EINVAL;
3683 } else if (data_count + *ppdata > end_of_smb) {
3684 cFYI(1, "data %p + count %d (%p) past smb end %p start %p",
3685 *ppdata, data_count, (data_count + *ppdata),
3686 end_of_smb, pSMBr);
3687 return -EINVAL;
3688 } else if (parm_count + data_count > bcc) {
3689 cFYI(1, "parm count and data count larger than SMB");
3690 return -EINVAL;
3691 }
3692 *pdatalen = data_count;
3693 *pparmlen = parm_count;
3694 return 0;
3695}
3696
3697
3698int
3699CIFSSMBGetCIFSACL(const int xid, struct cifs_tcon *tcon, __u16 fid,
3700 struct cifs_ntsd **acl_inf, __u32 *pbuflen)
3701{
3702 int rc = 0;
3703 int buf_type = 0;
3704 QUERY_SEC_DESC_REQ *pSMB;
3705 struct kvec iov[1];
3706
3707 cFYI(1, "GetCifsACL");
3708
3709 *pbuflen = 0;
3710 *acl_inf = NULL;
3711
3712 rc = smb_init_nttransact(NT_TRANSACT_QUERY_SECURITY_DESC, 0,
3713 8 , tcon, (void **) &pSMB);
3714 if (rc)
3715 return rc;
3716
3717 pSMB->MaxParameterCount = cpu_to_le32(4);
3718
3719 pSMB->MaxSetupCount = 0;
3720 pSMB->Fid = fid;
3721 pSMB->AclFlags = cpu_to_le32(CIFS_ACL_OWNER | CIFS_ACL_GROUP |
3722 CIFS_ACL_DACL);
3723 pSMB->ByteCount = cpu_to_le16(11);
3724 inc_rfc1001_len(pSMB, 11);
3725 iov[0].iov_base = (char *)pSMB;
3726 iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4;
3727
3728 rc = SendReceive2(xid, tcon->ses, iov, 1 , &buf_type,
3729 0);
3730 cifs_stats_inc(&tcon->num_acl_get);
3731 if (rc) {
3732 cFYI(1, "Send error in QuerySecDesc = %d", rc);
3733 } else {
3734 __le32 *parm;
3735 __u32 parm_len;
3736 __u32 acl_len;
3737 struct smb_com_ntransact_rsp *pSMBr;
3738 char *pdata;
3739
3740
3741 rc = validate_ntransact(iov[0].iov_base, (char **)&parm,
3742 &pdata, &parm_len, pbuflen);
3743 if (rc)
3744 goto qsec_out;
3745 pSMBr = (struct smb_com_ntransact_rsp *)iov[0].iov_base;
3746
3747 cFYI(1, "smb %p parm %p data %p", pSMBr, parm, *acl_inf);
3748
3749 if (le32_to_cpu(pSMBr->ParameterCount) != 4) {
3750 rc = -EIO;
3751 *pbuflen = 0;
3752 goto qsec_out;
3753 }
3754
3755
3756
3757 acl_len = le32_to_cpu(*parm);
3758 if (acl_len != *pbuflen) {
3759 cERROR(1, "acl length %d does not match %d",
3760 acl_len, *pbuflen);
3761 if (*pbuflen > acl_len)
3762 *pbuflen = acl_len;
3763 }
3764
3765
3766
3767 if ((*pbuflen < sizeof(struct cifs_ntsd) + 8) ||
3768 (*pbuflen >= 64 * 1024)) {
3769 cERROR(1, "bad acl length %d", *pbuflen);
3770 rc = -EINVAL;
3771 *pbuflen = 0;
3772 } else {
3773 *acl_inf = kmalloc(*pbuflen, GFP_KERNEL);
3774 if (*acl_inf == NULL) {
3775 *pbuflen = 0;
3776 rc = -ENOMEM;
3777 }
3778 memcpy(*acl_inf, pdata, *pbuflen);
3779 }
3780 }
3781qsec_out:
3782 if (buf_type == CIFS_SMALL_BUFFER)
3783 cifs_small_buf_release(iov[0].iov_base);
3784 else if (buf_type == CIFS_LARGE_BUFFER)
3785 cifs_buf_release(iov[0].iov_base);
3786
3787 return rc;
3788}
3789
3790int
3791CIFSSMBSetCIFSACL(const int xid, struct cifs_tcon *tcon, __u16 fid,
3792 struct cifs_ntsd *pntsd, __u32 acllen, int aclflag)
3793{
3794 __u16 byte_count, param_count, data_count, param_offset, data_offset;
3795 int rc = 0;
3796 int bytes_returned = 0;
3797 SET_SEC_DESC_REQ *pSMB = NULL;
3798 void *pSMBr;
3799
3800setCifsAclRetry:
3801 rc = smb_init(SMB_COM_NT_TRANSACT, 19, tcon, (void **) &pSMB, &pSMBr);
3802 if (rc)
3803 return rc;
3804
3805 pSMB->MaxSetupCount = 0;
3806 pSMB->Reserved = 0;
3807
3808 param_count = 8;
3809 param_offset = offsetof(struct smb_com_transaction_ssec_req, Fid) - 4;
3810 data_count = acllen;
3811 data_offset = param_offset + param_count;
3812 byte_count = 3 + param_count;
3813
3814 pSMB->DataCount = cpu_to_le32(data_count);
3815 pSMB->TotalDataCount = pSMB->DataCount;
3816 pSMB->MaxParameterCount = cpu_to_le32(4);
3817 pSMB->MaxDataCount = cpu_to_le32(16384);
3818 pSMB->ParameterCount = cpu_to_le32(param_count);
3819 pSMB->ParameterOffset = cpu_to_le32(param_offset);
3820 pSMB->TotalParameterCount = pSMB->ParameterCount;
3821 pSMB->DataOffset = cpu_to_le32(data_offset);
3822 pSMB->SetupCount = 0;
3823 pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_SET_SECURITY_DESC);
3824 pSMB->ByteCount = cpu_to_le16(byte_count+data_count);
3825
3826 pSMB->Fid = fid;
3827 pSMB->Reserved2 = 0;
3828 pSMB->AclFlags = cpu_to_le32(aclflag);
3829
3830 if (pntsd && acllen) {
3831 memcpy((char *)pSMBr + offsetof(struct smb_hdr, Protocol) +
3832 data_offset, pntsd, acllen);
3833 inc_rfc1001_len(pSMB, byte_count + data_count);
3834 } else
3835 inc_rfc1001_len(pSMB, byte_count);
3836
3837 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
3838 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
3839
3840 cFYI(1, "SetCIFSACL bytes_returned: %d, rc: %d", bytes_returned, rc);
3841 if (rc)
3842 cFYI(1, "Set CIFS ACL returned %d", rc);
3843 cifs_buf_release(pSMB);
3844
3845 if (rc == -EAGAIN)
3846 goto setCifsAclRetry;
3847
3848 return (rc);
3849}
3850
3851#endif
3852
3853
3854
3855int SMBQueryInformation(const int xid, struct cifs_tcon *tcon,
3856 const unsigned char *searchName,
3857 FILE_ALL_INFO *pFinfo,
3858 const struct nls_table *nls_codepage, int remap)
3859{
3860 QUERY_INFORMATION_REQ *pSMB;
3861 QUERY_INFORMATION_RSP *pSMBr;
3862 int rc = 0;
3863 int bytes_returned;
3864 int name_len;
3865
3866 cFYI(1, "In SMBQPath path %s", searchName);
3867QInfRetry:
3868 rc = smb_init(SMB_COM_QUERY_INFORMATION, 0, tcon, (void **) &pSMB,
3869 (void **) &pSMBr);
3870 if (rc)
3871 return rc;
3872
3873 if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
3874 name_len =
3875 cifsConvertToUTF16((__le16 *) pSMB->FileName,
3876 searchName, PATH_MAX, nls_codepage,
3877 remap);
3878 name_len++;
3879 name_len *= 2;
3880 } else {
3881 name_len = strnlen(searchName, PATH_MAX);
3882 name_len++;
3883 strncpy(pSMB->FileName, searchName, name_len);
3884 }
3885 pSMB->BufferFormat = 0x04;
3886 name_len++;
3887 inc_rfc1001_len(pSMB, (__u16)name_len);
3888 pSMB->ByteCount = cpu_to_le16(name_len);
3889
3890 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
3891 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
3892 if (rc) {
3893 cFYI(1, "Send error in QueryInfo = %d", rc);
3894 } else if (pFinfo) {
3895 struct timespec ts;
3896 __u32 time = le32_to_cpu(pSMBr->last_write_time);
3897
3898
3899
3900 memset(pFinfo, 0, sizeof(FILE_ALL_INFO));
3901 ts.tv_nsec = 0;
3902 ts.tv_sec = time;
3903
3904 pFinfo->ChangeTime = cpu_to_le64(cifs_UnixTimeToNT(ts));
3905 pFinfo->LastWriteTime = pFinfo->ChangeTime;
3906 pFinfo->LastAccessTime = 0;
3907 pFinfo->AllocationSize =
3908 cpu_to_le64(le32_to_cpu(pSMBr->size));
3909 pFinfo->EndOfFile = pFinfo->AllocationSize;
3910 pFinfo->Attributes =
3911 cpu_to_le32(le16_to_cpu(pSMBr->attr));
3912 } else
3913 rc = -EIO;
3914
3915 cifs_buf_release(pSMB);
3916
3917 if (rc == -EAGAIN)
3918 goto QInfRetry;
3919
3920 return rc;
3921}
3922
3923int
3924CIFSSMBQFileInfo(const int xid, struct cifs_tcon *tcon,
3925 u16 netfid, FILE_ALL_INFO *pFindData)
3926{
3927 struct smb_t2_qfi_req *pSMB = NULL;
3928 struct smb_t2_qfi_rsp *pSMBr = NULL;
3929 int rc = 0;
3930 int bytes_returned;
3931 __u16 params, byte_count;
3932
3933QFileInfoRetry:
3934 rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
3935 (void **) &pSMBr);
3936 if (rc)
3937 return rc;
3938
3939 params = 2 + 2 ;
3940 pSMB->t2.TotalDataCount = 0;
3941 pSMB->t2.MaxParameterCount = cpu_to_le16(4);
3942
3943 pSMB->t2.MaxDataCount = cpu_to_le16(CIFSMaxBufSize);
3944 pSMB->t2.MaxSetupCount = 0;
3945 pSMB->t2.Reserved = 0;
3946 pSMB->t2.Flags = 0;
3947 pSMB->t2.Timeout = 0;
3948 pSMB->t2.Reserved2 = 0;
3949 pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req,
3950 Fid) - 4);
3951 pSMB->t2.DataCount = 0;
3952 pSMB->t2.DataOffset = 0;
3953 pSMB->t2.SetupCount = 1;
3954 pSMB->t2.Reserved3 = 0;
3955 pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION);
3956 byte_count = params + 1 ;
3957 pSMB->t2.TotalParameterCount = cpu_to_le16(params);
3958 pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount;
3959 pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_ALL_INFO);
3960 pSMB->Pad = 0;
3961 pSMB->Fid = netfid;
3962 inc_rfc1001_len(pSMB, byte_count);
3963
3964 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
3965 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
3966 if (rc) {
3967 cFYI(1, "Send error in QPathInfo = %d", rc);
3968 } else {
3969 rc = validate_t2((struct smb_t2_rsp *)pSMBr);
3970
3971 if (rc)
3972 rc = -EIO;
3973 else if (get_bcc(&pSMBr->hdr) < 40)
3974 rc = -EIO;
3975 else if (pFindData) {
3976 __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
3977 memcpy((char *) pFindData,
3978 (char *) &pSMBr->hdr.Protocol +
3979 data_offset, sizeof(FILE_ALL_INFO));
3980 } else
3981 rc = -ENOMEM;
3982 }
3983 cifs_buf_release(pSMB);
3984 if (rc == -EAGAIN)
3985 goto QFileInfoRetry;
3986
3987 return rc;
3988}
3989
3990int
3991CIFSSMBQPathInfo(const int xid, struct cifs_tcon *tcon,
3992 const unsigned char *searchName,
3993 FILE_ALL_INFO *pFindData,
3994 int legacy ,
3995 const struct nls_table *nls_codepage, int remap)
3996{
3997
3998 TRANSACTION2_QPI_REQ *pSMB = NULL;
3999 TRANSACTION2_QPI_RSP *pSMBr = NULL;
4000 int rc = 0;
4001 int bytes_returned;
4002 int name_len;
4003 __u16 params, byte_count;
4004
4005
4006QPathInfoRetry:
4007 rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
4008 (void **) &pSMBr);
4009 if (rc)
4010 return rc;
4011
4012 if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
4013 name_len =
4014 cifsConvertToUTF16((__le16 *) pSMB->FileName, searchName,
4015 PATH_MAX, nls_codepage, remap);
4016 name_len++;
4017 name_len *= 2;
4018 } else {
4019 name_len = strnlen(searchName, PATH_MAX);
4020 name_len++;
4021 strncpy(pSMB->FileName, searchName, name_len);
4022 }
4023
4024 params = 2 + 4 + name_len ;
4025 pSMB->TotalDataCount = 0;
4026 pSMB->MaxParameterCount = cpu_to_le16(2);
4027
4028 pSMB->MaxDataCount = cpu_to_le16(4000);
4029 pSMB->MaxSetupCount = 0;
4030 pSMB->Reserved = 0;
4031 pSMB->Flags = 0;
4032 pSMB->Timeout = 0;
4033 pSMB->Reserved2 = 0;
4034 pSMB->ParameterOffset = cpu_to_le16(offsetof(
4035 struct smb_com_transaction2_qpi_req, InformationLevel) - 4);
4036 pSMB->DataCount = 0;
4037 pSMB->DataOffset = 0;
4038 pSMB->SetupCount = 1;
4039 pSMB->Reserved3 = 0;
4040 pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION);
4041 byte_count = params + 1 ;
4042 pSMB->TotalParameterCount = cpu_to_le16(params);
4043 pSMB->ParameterCount = pSMB->TotalParameterCount;
4044 if (legacy)
4045 pSMB->InformationLevel = cpu_to_le16(SMB_INFO_STANDARD);
4046 else
4047 pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_ALL_INFO);
4048 pSMB->Reserved4 = 0;
4049 inc_rfc1001_len(pSMB, byte_count);
4050 pSMB->ByteCount = cpu_to_le16(byte_count);
4051
4052 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
4053 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
4054 if (rc) {
4055 cFYI(1, "Send error in QPathInfo = %d", rc);
4056 } else {
4057 rc = validate_t2((struct smb_t2_rsp *)pSMBr);
4058
4059 if (rc)
4060 rc = -EIO;
4061 else if (!legacy && get_bcc(&pSMBr->hdr) < 40)
4062 rc = -EIO;
4063 else if (legacy && get_bcc(&pSMBr->hdr) < 24)
4064 rc = -EIO;
4065
4066 else if (pFindData) {
4067 int size;
4068 __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
4069
4070
4071
4072
4073
4074 if (legacy)
4075 size = sizeof(FILE_INFO_STANDARD);
4076 else
4077 size = sizeof(FILE_ALL_INFO);
4078 memcpy((char *) pFindData,
4079 (char *) &pSMBr->hdr.Protocol +
4080 data_offset, size);
4081 } else
4082 rc = -ENOMEM;
4083 }
4084 cifs_buf_release(pSMB);
4085 if (rc == -EAGAIN)
4086 goto QPathInfoRetry;
4087
4088 return rc;
4089}
4090
4091int
4092CIFSSMBUnixQFileInfo(const int xid, struct cifs_tcon *tcon,
4093 u16 netfid, FILE_UNIX_BASIC_INFO *pFindData)
4094{
4095 struct smb_t2_qfi_req *pSMB = NULL;
4096 struct smb_t2_qfi_rsp *pSMBr = NULL;
4097 int rc = 0;
4098 int bytes_returned;
4099 __u16 params, byte_count;
4100
4101UnixQFileInfoRetry:
4102 rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
4103 (void **) &pSMBr);
4104 if (rc)
4105 return rc;
4106
4107 params = 2 + 2 ;
4108 pSMB->t2.TotalDataCount = 0;
4109 pSMB->t2.MaxParameterCount = cpu_to_le16(4);
4110
4111 pSMB->t2.MaxDataCount = cpu_to_le16(CIFSMaxBufSize);
4112 pSMB->t2.MaxSetupCount = 0;
4113 pSMB->t2.Reserved = 0;
4114 pSMB->t2.Flags = 0;
4115 pSMB->t2.Timeout = 0;
4116 pSMB->t2.Reserved2 = 0;
4117 pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req,
4118 Fid) - 4);
4119 pSMB->t2.DataCount = 0;
4120 pSMB->t2.DataOffset = 0;
4121 pSMB->t2.SetupCount = 1;
4122 pSMB->t2.Reserved3 = 0;
4123 pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION);
4124 byte_count = params + 1 ;
4125 pSMB->t2.TotalParameterCount = cpu_to_le16(params);
4126 pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount;
4127 pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC);
4128 pSMB->Pad = 0;
4129 pSMB->Fid = netfid;
4130 inc_rfc1001_len(pSMB, byte_count);
4131
4132 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
4133 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
4134 if (rc) {
4135 cFYI(1, "Send error in QPathInfo = %d", rc);
4136 } else {
4137 rc = validate_t2((struct smb_t2_rsp *)pSMBr);
4138
4139 if (rc || get_bcc(&pSMBr->hdr) < sizeof(FILE_UNIX_BASIC_INFO)) {
4140 cERROR(1, "Malformed FILE_UNIX_BASIC_INFO response.\n"
4141 "Unix Extensions can be disabled on mount "
4142 "by specifying the nosfu mount option.");
4143 rc = -EIO;
4144 } else {
4145 __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
4146 memcpy((char *) pFindData,
4147 (char *) &pSMBr->hdr.Protocol +
4148 data_offset,
4149 sizeof(FILE_UNIX_BASIC_INFO));
4150 }
4151 }
4152
4153 cifs_buf_release(pSMB);
4154 if (rc == -EAGAIN)
4155 goto UnixQFileInfoRetry;
4156
4157 return rc;
4158}
4159
4160int
4161CIFSSMBUnixQPathInfo(const int xid, struct cifs_tcon *tcon,
4162 const unsigned char *searchName,
4163 FILE_UNIX_BASIC_INFO *pFindData,
4164 const struct nls_table *nls_codepage, int remap)
4165{
4166
4167 TRANSACTION2_QPI_REQ *pSMB = NULL;
4168 TRANSACTION2_QPI_RSP *pSMBr = NULL;
4169 int rc = 0;
4170 int bytes_returned = 0;
4171 int name_len;
4172 __u16 params, byte_count;
4173
4174 cFYI(1, "In QPathInfo (Unix) the path %s", searchName);
4175UnixQPathInfoRetry:
4176 rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
4177 (void **) &pSMBr);
4178 if (rc)
4179 return rc;
4180
4181 if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
4182 name_len =
4183 cifsConvertToUTF16((__le16 *) pSMB->FileName, searchName,
4184 PATH_MAX, nls_codepage, remap);
4185 name_len++;
4186 name_len *= 2;
4187 } else {
4188 name_len = strnlen(searchName, PATH_MAX);
4189 name_len++;
4190 strncpy(pSMB->FileName, searchName, name_len);
4191 }
4192
4193 params = 2 + 4 + name_len ;
4194 pSMB->TotalDataCount = 0;
4195 pSMB->MaxParameterCount = cpu_to_le16(2);
4196
4197 pSMB->MaxDataCount = cpu_to_le16(4000);
4198 pSMB->MaxSetupCount = 0;
4199 pSMB->Reserved = 0;
4200 pSMB->Flags = 0;
4201 pSMB->Timeout = 0;
4202 pSMB->Reserved2 = 0;
4203 pSMB->ParameterOffset = cpu_to_le16(offsetof(
4204 struct smb_com_transaction2_qpi_req, InformationLevel) - 4);
4205 pSMB->DataCount = 0;
4206 pSMB->DataOffset = 0;
4207 pSMB->SetupCount = 1;
4208 pSMB->Reserved3 = 0;
4209 pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION);
4210 byte_count = params + 1 ;
4211 pSMB->TotalParameterCount = cpu_to_le16(params);
4212 pSMB->ParameterCount = pSMB->TotalParameterCount;
4213 pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC);
4214 pSMB->Reserved4 = 0;
4215 inc_rfc1001_len(pSMB, byte_count);
4216 pSMB->ByteCount = cpu_to_le16(byte_count);
4217
4218 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
4219 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
4220 if (rc) {
4221 cFYI(1, "Send error in QPathInfo = %d", rc);
4222 } else {
4223 rc = validate_t2((struct smb_t2_rsp *)pSMBr);
4224
4225 if (rc || get_bcc(&pSMBr->hdr) < sizeof(FILE_UNIX_BASIC_INFO)) {
4226 cERROR(1, "Malformed FILE_UNIX_BASIC_INFO response.\n"
4227 "Unix Extensions can be disabled on mount "
4228 "by specifying the nosfu mount option.");
4229 rc = -EIO;
4230 } else {
4231 __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
4232 memcpy((char *) pFindData,
4233 (char *) &pSMBr->hdr.Protocol +
4234 data_offset,
4235 sizeof(FILE_UNIX_BASIC_INFO));
4236 }
4237 }
4238 cifs_buf_release(pSMB);
4239 if (rc == -EAGAIN)
4240 goto UnixQPathInfoRetry;
4241
4242 return rc;
4243}
4244
4245
4246int
4247CIFSFindFirst(const int xid, struct cifs_tcon *tcon,
4248 const char *searchName,
4249 const struct nls_table *nls_codepage,
4250 __u16 *pnetfid, __u16 search_flags,
4251 struct cifs_search_info *psrch_inf, int remap, const char dirsep)
4252{
4253
4254 TRANSACTION2_FFIRST_REQ *pSMB = NULL;
4255 TRANSACTION2_FFIRST_RSP *pSMBr = NULL;
4256 T2_FFIRST_RSP_PARMS *parms;
4257 int rc = 0;
4258 int bytes_returned = 0;
4259 int name_len;
4260 __u16 params, byte_count;
4261
4262 cFYI(1, "In FindFirst for %s", searchName);
4263
4264findFirstRetry:
4265 rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
4266 (void **) &pSMBr);
4267 if (rc)
4268 return rc;
4269
4270 if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
4271 name_len =
4272 cifsConvertToUTF16((__le16 *) pSMB->FileName, searchName,
4273 PATH_MAX, nls_codepage, remap);
4274
4275
4276
4277 name_len *= 2;
4278 pSMB->FileName[name_len] = dirsep;
4279 pSMB->FileName[name_len+1] = 0;
4280 pSMB->FileName[name_len+2] = '*';
4281 pSMB->FileName[name_len+3] = 0;
4282 name_len += 4;
4283 pSMB->FileName[name_len] = 0;
4284 pSMB->FileName[name_len+1] = 0;
4285 name_len += 2;
4286 } else {
4287 name_len = strnlen(searchName, PATH_MAX);
4288
4289
4290
4291 strncpy(pSMB->FileName, searchName, name_len);
4292 pSMB->FileName[name_len] = dirsep;
4293 pSMB->FileName[name_len+1] = '*';
4294 pSMB->FileName[name_len+2] = 0;
4295 name_len += 3;
4296 }
4297
4298 params = 12 + name_len ;
4299 pSMB->TotalDataCount = 0;
4300 pSMB->MaxParameterCount = cpu_to_le16(10);
4301 pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize & 0xFFFFFF00);
4302 pSMB->MaxSetupCount = 0;
4303 pSMB->Reserved = 0;
4304 pSMB->Flags = 0;
4305 pSMB->Timeout = 0;
4306 pSMB->Reserved2 = 0;
4307 byte_count = params + 1 ;
4308 pSMB->TotalParameterCount = cpu_to_le16(params);
4309 pSMB->ParameterCount = pSMB->TotalParameterCount;
4310 pSMB->ParameterOffset = cpu_to_le16(
4311 offsetof(struct smb_com_transaction2_ffirst_req, SearchAttributes)
4312 - 4);
4313 pSMB->DataCount = 0;
4314 pSMB->DataOffset = 0;
4315 pSMB->SetupCount = 1;
4316 pSMB->Reserved3 = 0;
4317 pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_FIRST);
4318 pSMB->SearchAttributes =
4319 cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM |
4320 ATTR_DIRECTORY);
4321 pSMB->SearchCount = cpu_to_le16(CIFSMaxBufSize/sizeof(FILE_UNIX_INFO));
4322 pSMB->SearchFlags = cpu_to_le16(search_flags);
4323 pSMB->InformationLevel = cpu_to_le16(psrch_inf->info_level);
4324
4325
4326 pSMB->SearchStorageType = 0;
4327 inc_rfc1001_len(pSMB, byte_count);
4328 pSMB->ByteCount = cpu_to_le16(byte_count);
4329
4330 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
4331 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
4332 cifs_stats_inc(&tcon->num_ffirst);
4333
4334 if (rc) {
4335
4336
4337 cFYI(1, "Error in FindFirst = %d", rc);
4338
4339 cifs_buf_release(pSMB);
4340
4341
4342
4343 if (rc == -EAGAIN)
4344 goto findFirstRetry;
4345 } else {
4346
4347 rc = validate_t2((struct smb_t2_rsp *)pSMBr);
4348 if (rc == 0) {
4349 unsigned int lnoff;
4350
4351 if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE)
4352 psrch_inf->unicode = true;
4353 else
4354 psrch_inf->unicode = false;
4355
4356 psrch_inf->ntwrk_buf_start = (char *)pSMBr;
4357 psrch_inf->smallBuf = 0;
4358 psrch_inf->srch_entries_start =
4359 (char *) &pSMBr->hdr.Protocol +
4360 le16_to_cpu(pSMBr->t2.DataOffset);
4361 parms = (T2_FFIRST_RSP_PARMS *)((char *) &pSMBr->hdr.Protocol +
4362 le16_to_cpu(pSMBr->t2.ParameterOffset));
4363
4364 if (parms->EndofSearch)
4365 psrch_inf->endOfSearch = true;
4366 else
4367 psrch_inf->endOfSearch = false;
4368
4369 psrch_inf->entries_in_buffer =
4370 le16_to_cpu(parms->SearchCount);
4371 psrch_inf->index_of_last_entry = 2 +
4372 psrch_inf->entries_in_buffer;
4373 lnoff = le16_to_cpu(parms->LastNameOffset);
4374 if (CIFSMaxBufSize < lnoff) {
4375 cERROR(1, "ignoring corrupt resume name");
4376 psrch_inf->last_entry = NULL;
4377 return rc;
4378 }
4379
4380 psrch_inf->last_entry = psrch_inf->srch_entries_start +
4381 lnoff;
4382
4383 *pnetfid = parms->SearchHandle;
4384 } else {
4385 cifs_buf_release(pSMB);
4386 }
4387 }
4388
4389 return rc;
4390}
4391
4392int CIFSFindNext(const int xid, struct cifs_tcon *tcon, __u16 searchHandle,
4393 __u16 search_flags, struct cifs_search_info *psrch_inf)
4394{
4395 TRANSACTION2_FNEXT_REQ *pSMB = NULL;
4396 TRANSACTION2_FNEXT_RSP *pSMBr = NULL;
4397 T2_FNEXT_RSP_PARMS *parms;
4398 char *response_data;
4399 int rc = 0;
4400 int bytes_returned;
4401 unsigned int name_len;
4402 __u16 params, byte_count;
4403
4404 cFYI(1, "In FindNext");
4405
4406 if (psrch_inf->endOfSearch)
4407 return -ENOENT;
4408
4409 rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
4410 (void **) &pSMBr);
4411 if (rc)
4412 return rc;
4413
4414 params = 14;
4415 byte_count = 0;
4416 pSMB->TotalDataCount = 0;
4417 pSMB->MaxParameterCount = cpu_to_le16(8);
4418 pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize & 0xFFFFFF00);
4419 pSMB->MaxSetupCount = 0;
4420 pSMB->Reserved = 0;
4421 pSMB->Flags = 0;
4422 pSMB->Timeout = 0;
4423 pSMB->Reserved2 = 0;
4424 pSMB->ParameterOffset = cpu_to_le16(
4425 offsetof(struct smb_com_transaction2_fnext_req,SearchHandle) - 4);
4426 pSMB->DataCount = 0;
4427 pSMB->DataOffset = 0;
4428 pSMB->SetupCount = 1;
4429 pSMB->Reserved3 = 0;
4430 pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_NEXT);
4431 pSMB->SearchHandle = searchHandle;
4432 pSMB->SearchCount =
4433 cpu_to_le16(CIFSMaxBufSize / sizeof(FILE_UNIX_INFO));
4434 pSMB->InformationLevel = cpu_to_le16(psrch_inf->info_level);
4435 pSMB->ResumeKey = psrch_inf->resume_key;
4436 pSMB->SearchFlags = cpu_to_le16(search_flags);
4437
4438 name_len = psrch_inf->resume_name_len;
4439 params += name_len;
4440 if (name_len < PATH_MAX) {
4441 memcpy(pSMB->ResumeFileName, psrch_inf->presume_name, name_len);
4442 byte_count += name_len;
4443
4444 pSMB->ResumeFileName[name_len] = 0;
4445 pSMB->ResumeFileName[name_len+1] = 0;
4446 } else {
4447 rc = -EINVAL;
4448 goto FNext2_err_exit;
4449 }
4450 byte_count = params + 1 ;
4451 pSMB->TotalParameterCount = cpu_to_le16(params);
4452 pSMB->ParameterCount = pSMB->TotalParameterCount;
4453 inc_rfc1001_len(pSMB, byte_count);
4454 pSMB->ByteCount = cpu_to_le16(byte_count);
4455
4456 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
4457 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
4458 cifs_stats_inc(&tcon->num_fnext);
4459 if (rc) {
4460 if (rc == -EBADF) {
4461 psrch_inf->endOfSearch = true;
4462 cifs_buf_release(pSMB);
4463 rc = 0;
4464 } else
4465 cFYI(1, "FindNext returned = %d", rc);
4466 } else {
4467 rc = validate_t2((struct smb_t2_rsp *)pSMBr);
4468
4469 if (rc == 0) {
4470 unsigned int lnoff;
4471
4472
4473 if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE)
4474 psrch_inf->unicode = true;
4475 else
4476 psrch_inf->unicode = false;
4477 response_data = (char *) &pSMBr->hdr.Protocol +
4478 le16_to_cpu(pSMBr->t2.ParameterOffset);
4479 parms = (T2_FNEXT_RSP_PARMS *)response_data;
4480 response_data = (char *)&pSMBr->hdr.Protocol +
4481 le16_to_cpu(pSMBr->t2.DataOffset);
4482 if (psrch_inf->smallBuf)
4483 cifs_small_buf_release(
4484 psrch_inf->ntwrk_buf_start);
4485 else
4486 cifs_buf_release(psrch_inf->ntwrk_buf_start);
4487 psrch_inf->srch_entries_start = response_data;
4488 psrch_inf->ntwrk_buf_start = (char *)pSMB;
4489 psrch_inf->smallBuf = 0;
4490 if (parms->EndofSearch)
4491 psrch_inf->endOfSearch = true;
4492 else
4493 psrch_inf->endOfSearch = false;
4494 psrch_inf->entries_in_buffer =
4495 le16_to_cpu(parms->SearchCount);
4496 psrch_inf->index_of_last_entry +=
4497 psrch_inf->entries_in_buffer;
4498 lnoff = le16_to_cpu(parms->LastNameOffset);
4499 if (CIFSMaxBufSize < lnoff) {
4500 cERROR(1, "ignoring corrupt resume name");
4501 psrch_inf->last_entry = NULL;
4502 return rc;
4503 } else
4504 psrch_inf->last_entry =
4505 psrch_inf->srch_entries_start + lnoff;
4506
4507
4508
4509
4510
4511 }
4512
4513 }
4514
4515
4516
4517
4518
4519
4520FNext2_err_exit:
4521 if (rc != 0)
4522 cifs_buf_release(pSMB);
4523 return rc;
4524}
4525
4526int
4527CIFSFindClose(const int xid, struct cifs_tcon *tcon,
4528 const __u16 searchHandle)
4529{
4530 int rc = 0;
4531 FINDCLOSE_REQ *pSMB = NULL;
4532
4533 cFYI(1, "In CIFSSMBFindClose");
4534 rc = small_smb_init(SMB_COM_FIND_CLOSE2, 1, tcon, (void **)&pSMB);
4535
4536
4537
4538 if (rc == -EAGAIN)
4539 return 0;
4540 if (rc)
4541 return rc;
4542
4543 pSMB->FileID = searchHandle;
4544 pSMB->ByteCount = 0;
4545 rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0);
4546 if (rc)
4547 cERROR(1, "Send error in FindClose = %d", rc);
4548
4549 cifs_stats_inc(&tcon->num_fclose);
4550
4551
4552 if (rc == -EAGAIN)
4553 rc = 0;
4554
4555 return rc;
4556}
4557
4558int
4559CIFSGetSrvInodeNumber(const int xid, struct cifs_tcon *tcon,
4560 const unsigned char *searchName,
4561 __u64 *inode_number,
4562 const struct nls_table *nls_codepage, int remap)
4563{
4564 int rc = 0;
4565 TRANSACTION2_QPI_REQ *pSMB = NULL;
4566 TRANSACTION2_QPI_RSP *pSMBr = NULL;
4567 int name_len, bytes_returned;
4568 __u16 params, byte_count;
4569
4570 cFYI(1, "In GetSrvInodeNum for %s", searchName);
4571 if (tcon == NULL)
4572 return -ENODEV;
4573
4574GetInodeNumberRetry:
4575 rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
4576 (void **) &pSMBr);
4577 if (rc)
4578 return rc;
4579
4580 if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
4581 name_len =
4582 cifsConvertToUTF16((__le16 *) pSMB->FileName,
4583 searchName, PATH_MAX, nls_codepage,
4584 remap);
4585 name_len++;
4586 name_len *= 2;
4587 } else {
4588 name_len = strnlen(searchName, PATH_MAX);
4589 name_len++;
4590 strncpy(pSMB->FileName, searchName, name_len);
4591 }
4592
4593 params = 2 + 4 + name_len ;
4594 pSMB->TotalDataCount = 0;
4595 pSMB->MaxParameterCount = cpu_to_le16(2);
4596
4597 pSMB->MaxDataCount = cpu_to_le16(4000);
4598 pSMB->MaxSetupCount = 0;
4599 pSMB->Reserved = 0;
4600 pSMB->Flags = 0;
4601 pSMB->Timeout = 0;
4602 pSMB->Reserved2 = 0;
4603 pSMB->ParameterOffset = cpu_to_le16(offsetof(
4604 struct smb_com_transaction2_qpi_req, InformationLevel) - 4);
4605 pSMB->DataCount = 0;
4606 pSMB->DataOffset = 0;
4607 pSMB->SetupCount = 1;
4608 pSMB->Reserved3 = 0;
4609 pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION);
4610 byte_count = params + 1 ;
4611 pSMB->TotalParameterCount = cpu_to_le16(params);
4612 pSMB->ParameterCount = pSMB->TotalParameterCount;
4613 pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_INTERNAL_INFO);
4614 pSMB->Reserved4 = 0;
4615 inc_rfc1001_len(pSMB, byte_count);
4616 pSMB->ByteCount = cpu_to_le16(byte_count);
4617
4618 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
4619 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
4620 if (rc) {
4621 cFYI(1, "error %d in QueryInternalInfo", rc);
4622 } else {
4623
4624 rc = validate_t2((struct smb_t2_rsp *)pSMBr);
4625
4626 if (rc || get_bcc(&pSMBr->hdr) < 2)
4627
4628
4629 rc = -EIO;
4630 else {
4631 __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
4632 __u16 count = le16_to_cpu(pSMBr->t2.DataCount);
4633 struct file_internal_info *pfinfo;
4634
4635 if (count < 8) {
4636 cFYI(1, "Illegal size ret in QryIntrnlInf");
4637 rc = -EIO;
4638 goto GetInodeNumOut;
4639 }
4640 pfinfo = (struct file_internal_info *)
4641 (data_offset + (char *) &pSMBr->hdr.Protocol);
4642 *inode_number = le64_to_cpu(pfinfo->UniqueId);
4643 }
4644 }
4645GetInodeNumOut:
4646 cifs_buf_release(pSMB);
4647 if (rc == -EAGAIN)
4648 goto GetInodeNumberRetry;
4649 return rc;
4650}
4651
4652
4653
4654
4655
4656
4657
4658static int
4659parse_DFS_referrals(TRANSACTION2_GET_DFS_REFER_RSP *pSMBr,
4660 unsigned int *num_of_nodes,
4661 struct dfs_info3_param **target_nodes,
4662 const struct nls_table *nls_codepage, int remap,
4663 const char *searchName)
4664{
4665 int i, rc = 0;
4666 char *data_end;
4667 bool is_unicode;
4668 struct dfs_referral_level_3 *ref;
4669
4670 if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE)
4671 is_unicode = true;
4672 else
4673 is_unicode = false;
4674 *num_of_nodes = le16_to_cpu(pSMBr->NumberOfReferrals);
4675
4676 if (*num_of_nodes < 1) {
4677 cERROR(1, "num_referrals: must be at least > 0,"
4678 "but we get num_referrals = %d\n", *num_of_nodes);
4679 rc = -EINVAL;
4680 goto parse_DFS_referrals_exit;
4681 }
4682
4683 ref = (struct dfs_referral_level_3 *) &(pSMBr->referrals);
4684 if (ref->VersionNumber != cpu_to_le16(3)) {
4685 cERROR(1, "Referrals of V%d version are not supported,"
4686 "should be V3", le16_to_cpu(ref->VersionNumber));
4687 rc = -EINVAL;
4688 goto parse_DFS_referrals_exit;
4689 }
4690
4691
4692 data_end = (char *)(&(pSMBr->PathConsumed)) +
4693 le16_to_cpu(pSMBr->t2.DataCount);
4694
4695 cFYI(1, "num_referrals: %d dfs flags: 0x%x ...\n",
4696 *num_of_nodes,
4697 le32_to_cpu(pSMBr->DFSFlags));
4698
4699 *target_nodes = kzalloc(sizeof(struct dfs_info3_param) *
4700 *num_of_nodes, GFP_KERNEL);
4701 if (*target_nodes == NULL) {
4702 cERROR(1, "Failed to allocate buffer for target_nodes\n");
4703 rc = -ENOMEM;
4704 goto parse_DFS_referrals_exit;
4705 }
4706
4707
4708 for (i = 0; i < *num_of_nodes; i++) {
4709 char *temp;
4710 int max_len;
4711 struct dfs_info3_param *node = (*target_nodes)+i;
4712
4713 node->flags = le32_to_cpu(pSMBr->DFSFlags);
4714 if (is_unicode) {
4715 __le16 *tmp = kmalloc(strlen(searchName)*2 + 2,
4716 GFP_KERNEL);
4717 if (tmp == NULL) {
4718 rc = -ENOMEM;
4719 goto parse_DFS_referrals_exit;
4720 }
4721 cifsConvertToUTF16((__le16 *) tmp, searchName,
4722 PATH_MAX, nls_codepage, remap);
4723 node->path_consumed = cifs_utf16_bytes(tmp,
4724 le16_to_cpu(pSMBr->PathConsumed),
4725 nls_codepage);
4726 kfree(tmp);
4727 } else
4728 node->path_consumed = le16_to_cpu(pSMBr->PathConsumed);
4729
4730 node->server_type = le16_to_cpu(ref->ServerType);
4731 node->ref_flag = le16_to_cpu(ref->ReferralEntryFlags);
4732
4733
4734 temp = (char *)ref + le16_to_cpu(ref->DfsPathOffset);
4735 max_len = data_end - temp;
4736 node->path_name = cifs_strndup_from_utf16(temp, max_len,
4737 is_unicode, nls_codepage);
4738 if (!node->path_name) {
4739 rc = -ENOMEM;
4740 goto parse_DFS_referrals_exit;
4741 }
4742
4743
4744 temp = (char *)ref + le16_to_cpu(ref->NetworkAddressOffset);
4745 max_len = data_end - temp;
4746 node->node_name = cifs_strndup_from_utf16(temp, max_len,
4747 is_unicode, nls_codepage);
4748 if (!node->node_name) {
4749 rc = -ENOMEM;
4750 goto parse_DFS_referrals_exit;
4751 }
4752
4753 ref++;
4754 }
4755
4756parse_DFS_referrals_exit:
4757 if (rc) {
4758 free_dfs_info_array(*target_nodes, *num_of_nodes);
4759 *target_nodes = NULL;
4760 *num_of_nodes = 0;
4761 }
4762 return rc;
4763}
4764
4765int
4766CIFSGetDFSRefer(const int xid, struct cifs_ses *ses,
4767 const unsigned char *searchName,
4768 struct dfs_info3_param **target_nodes,
4769 unsigned int *num_of_nodes,
4770 const struct nls_table *nls_codepage, int remap)
4771{
4772
4773 TRANSACTION2_GET_DFS_REFER_REQ *pSMB = NULL;
4774 TRANSACTION2_GET_DFS_REFER_RSP *pSMBr = NULL;
4775 int rc = 0;
4776 int bytes_returned;
4777 int name_len;
4778 __u16 params, byte_count;
4779 *num_of_nodes = 0;
4780 *target_nodes = NULL;
4781
4782 cFYI(1, "In GetDFSRefer the path %s", searchName);
4783 if (ses == NULL)
4784 return -ENODEV;
4785getDFSRetry:
4786 rc = smb_init(SMB_COM_TRANSACTION2, 15, NULL, (void **) &pSMB,
4787 (void **) &pSMBr);
4788 if (rc)
4789 return rc;
4790
4791
4792
4793 pSMB->hdr.Mid = get_next_mid(ses->server);
4794 pSMB->hdr.Tid = ses->ipc_tid;
4795 pSMB->hdr.Uid = ses->Suid;
4796 if (ses->capabilities & CAP_STATUS32)
4797 pSMB->hdr.Flags2 |= SMBFLG2_ERR_STATUS;
4798 if (ses->capabilities & CAP_DFS)
4799 pSMB->hdr.Flags2 |= SMBFLG2_DFS;
4800
4801 if (ses->capabilities & CAP_UNICODE) {
4802 pSMB->hdr.Flags2 |= SMBFLG2_UNICODE;
4803 name_len =
4804 cifsConvertToUTF16((__le16 *) pSMB->RequestFileName,
4805 searchName, PATH_MAX, nls_codepage,
4806 remap);
4807 name_len++;
4808 name_len *= 2;
4809 } else {
4810 name_len = strnlen(searchName, PATH_MAX);
4811 name_len++;
4812 strncpy(pSMB->RequestFileName, searchName, name_len);
4813 }
4814
4815 if (ses->server) {
4816 if (ses->server->sec_mode &
4817 (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED))
4818 pSMB->hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE;
4819 }
4820
4821 pSMB->hdr.Uid = ses->Suid;
4822
4823 params = 2 + name_len ;
4824 pSMB->TotalDataCount = 0;
4825 pSMB->DataCount = 0;
4826 pSMB->DataOffset = 0;
4827 pSMB->MaxParameterCount = 0;
4828
4829 pSMB->MaxDataCount = cpu_to_le16(4000);
4830 pSMB->MaxSetupCount = 0;
4831 pSMB->Reserved = 0;
4832 pSMB->Flags = 0;
4833 pSMB->Timeout = 0;
4834 pSMB->Reserved2 = 0;
4835 pSMB->ParameterOffset = cpu_to_le16(offsetof(
4836 struct smb_com_transaction2_get_dfs_refer_req, MaxReferralLevel) - 4);
4837 pSMB->SetupCount = 1;
4838 pSMB->Reserved3 = 0;
4839 pSMB->SubCommand = cpu_to_le16(TRANS2_GET_DFS_REFERRAL);
4840 byte_count = params + 3 ;
4841 pSMB->ParameterCount = cpu_to_le16(params);
4842 pSMB->TotalParameterCount = pSMB->ParameterCount;
4843 pSMB->MaxReferralLevel = cpu_to_le16(3);
4844 inc_rfc1001_len(pSMB, byte_count);
4845 pSMB->ByteCount = cpu_to_le16(byte_count);
4846
4847 rc = SendReceive(xid, ses, (struct smb_hdr *) pSMB,
4848 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
4849 if (rc) {
4850 cFYI(1, "Send error in GetDFSRefer = %d", rc);
4851 goto GetDFSRefExit;
4852 }
4853 rc = validate_t2((struct smb_t2_rsp *)pSMBr);
4854
4855
4856 if (rc || get_bcc(&pSMBr->hdr) < 17) {
4857 rc = -EIO;
4858 goto GetDFSRefExit;
4859 }
4860
4861 cFYI(1, "Decoding GetDFSRefer response BCC: %d Offset %d",
4862 get_bcc(&pSMBr->hdr),
4863 le16_to_cpu(pSMBr->t2.DataOffset));
4864
4865
4866 rc = parse_DFS_referrals(pSMBr, num_of_nodes,
4867 target_nodes, nls_codepage, remap,
4868 searchName);
4869
4870GetDFSRefExit:
4871 cifs_buf_release(pSMB);
4872
4873 if (rc == -EAGAIN)
4874 goto getDFSRetry;
4875
4876 return rc;
4877}
4878
4879
4880int
4881SMBOldQFSInfo(const int xid, struct cifs_tcon *tcon, struct kstatfs *FSData)
4882{
4883
4884 TRANSACTION2_QFSI_REQ *pSMB = NULL;
4885 TRANSACTION2_QFSI_RSP *pSMBr = NULL;
4886 FILE_SYSTEM_ALLOC_INFO *response_data;
4887 int rc = 0;
4888 int bytes_returned = 0;
4889 __u16 params, byte_count;
4890
4891 cFYI(1, "OldQFSInfo");
4892oldQFSInfoRetry:
4893 rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
4894 (void **) &pSMBr);
4895 if (rc)
4896 return rc;
4897
4898 params = 2;
4899 pSMB->TotalDataCount = 0;
4900 pSMB->MaxParameterCount = cpu_to_le16(2);
4901 pSMB->MaxDataCount = cpu_to_le16(1000);
4902 pSMB->MaxSetupCount = 0;
4903 pSMB->Reserved = 0;
4904 pSMB->Flags = 0;
4905 pSMB->Timeout = 0;
4906 pSMB->Reserved2 = 0;
4907 byte_count = params + 1 ;
4908 pSMB->TotalParameterCount = cpu_to_le16(params);
4909 pSMB->ParameterCount = pSMB->TotalParameterCount;
4910 pSMB->ParameterOffset = cpu_to_le16(offsetof(
4911 struct smb_com_transaction2_qfsi_req, InformationLevel) - 4);
4912 pSMB->DataCount = 0;
4913 pSMB->DataOffset = 0;
4914 pSMB->SetupCount = 1;
4915 pSMB->Reserved3 = 0;
4916 pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION);
4917 pSMB->InformationLevel = cpu_to_le16(SMB_INFO_ALLOCATION);
4918 inc_rfc1001_len(pSMB, byte_count);
4919 pSMB->ByteCount = cpu_to_le16(byte_count);
4920
4921 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
4922 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
4923 if (rc) {
4924 cFYI(1, "Send error in QFSInfo = %d", rc);
4925 } else {
4926 rc = validate_t2((struct smb_t2_rsp *)pSMBr);
4927
4928 if (rc || get_bcc(&pSMBr->hdr) < 18)
4929 rc = -EIO;
4930 else {
4931 __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
4932 cFYI(1, "qfsinf resp BCC: %d Offset %d",
4933 get_bcc(&pSMBr->hdr), data_offset);
4934
4935 response_data = (FILE_SYSTEM_ALLOC_INFO *)
4936 (((char *) &pSMBr->hdr.Protocol) + data_offset);
4937 FSData->f_bsize =
4938 le16_to_cpu(response_data->BytesPerSector) *
4939 le32_to_cpu(response_data->
4940 SectorsPerAllocationUnit);
4941 FSData->f_blocks =
4942 le32_to_cpu(response_data->TotalAllocationUnits);
4943 FSData->f_bfree = FSData->f_bavail =
4944 le32_to_cpu(response_data->FreeAllocationUnits);
4945 cFYI(1, "Blocks: %lld Free: %lld Block size %ld",
4946 (unsigned long long)FSData->f_blocks,
4947 (unsigned long long)FSData->f_bfree,
4948 FSData->f_bsize);
4949 }
4950 }
4951 cifs_buf_release(pSMB);
4952
4953 if (rc == -EAGAIN)
4954 goto oldQFSInfoRetry;
4955
4956 return rc;
4957}
4958
4959int
4960CIFSSMBQFSInfo(const int xid, struct cifs_tcon *tcon, struct kstatfs *FSData)
4961{
4962
4963 TRANSACTION2_QFSI_REQ *pSMB = NULL;
4964 TRANSACTION2_QFSI_RSP *pSMBr = NULL;
4965 FILE_SYSTEM_INFO *response_data;
4966 int rc = 0;
4967 int bytes_returned = 0;
4968 __u16 params, byte_count;
4969
4970 cFYI(1, "In QFSInfo");
4971QFSInfoRetry:
4972 rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
4973 (void **) &pSMBr);
4974 if (rc)
4975 return rc;
4976
4977 params = 2;
4978 pSMB->TotalDataCount = 0;
4979 pSMB->MaxParameterCount = cpu_to_le16(2);
4980 pSMB->MaxDataCount = cpu_to_le16(1000);
4981 pSMB->MaxSetupCount = 0;
4982 pSMB->Reserved = 0;
4983 pSMB->Flags = 0;
4984 pSMB->Timeout = 0;
4985 pSMB->Reserved2 = 0;
4986 byte_count = params + 1 ;
4987 pSMB->TotalParameterCount = cpu_to_le16(params);
4988 pSMB->ParameterCount = pSMB->TotalParameterCount;
4989 pSMB->ParameterOffset = cpu_to_le16(offsetof(
4990 struct smb_com_transaction2_qfsi_req, InformationLevel) - 4);
4991 pSMB->DataCount = 0;
4992 pSMB->DataOffset = 0;
4993 pSMB->SetupCount = 1;
4994 pSMB->Reserved3 = 0;
4995 pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION);
4996 pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_SIZE_INFO);
4997 inc_rfc1001_len(pSMB, byte_count);
4998 pSMB->ByteCount = cpu_to_le16(byte_count);
4999
5000 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
5001 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
5002 if (rc) {
5003 cFYI(1, "Send error in QFSInfo = %d", rc);
5004 } else {
5005 rc = validate_t2((struct smb_t2_rsp *)pSMBr);
5006
5007 if (rc || get_bcc(&pSMBr->hdr) < 24)
5008 rc = -EIO;
5009 else {
5010 __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
5011
5012 response_data =
5013 (FILE_SYSTEM_INFO
5014 *) (((char *) &pSMBr->hdr.Protocol) +
5015 data_offset);
5016 FSData->f_bsize =
5017 le32_to_cpu(response_data->BytesPerSector) *
5018 le32_to_cpu(response_data->
5019 SectorsPerAllocationUnit);
5020 FSData->f_blocks =
5021 le64_to_cpu(response_data->TotalAllocationUnits);
5022 FSData->f_bfree = FSData->f_bavail =
5023 le64_to_cpu(response_data->FreeAllocationUnits);
5024 cFYI(1, "Blocks: %lld Free: %lld Block size %ld",
5025 (unsigned long long)FSData->f_blocks,
5026 (unsigned long long)FSData->f_bfree,
5027 FSData->f_bsize);
5028 }
5029 }
5030 cifs_buf_release(pSMB);
5031
5032 if (rc == -EAGAIN)
5033 goto QFSInfoRetry;
5034
5035 return rc;
5036}
5037
5038int
5039CIFSSMBQFSAttributeInfo(const int xid, struct cifs_tcon *tcon)
5040{
5041
5042 TRANSACTION2_QFSI_REQ *pSMB = NULL;
5043 TRANSACTION2_QFSI_RSP *pSMBr = NULL;
5044 FILE_SYSTEM_ATTRIBUTE_INFO *response_data;
5045 int rc = 0;
5046 int bytes_returned = 0;
5047 __u16 params, byte_count;
5048
5049 cFYI(1, "In QFSAttributeInfo");
5050QFSAttributeRetry:
5051 rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
5052 (void **) &pSMBr);
5053 if (rc)
5054 return rc;
5055
5056 params = 2;
5057 pSMB->TotalDataCount = 0;
5058 pSMB->MaxParameterCount = cpu_to_le16(2);
5059
5060 pSMB->MaxDataCount = cpu_to_le16(1000);
5061 pSMB->MaxSetupCount = 0;
5062 pSMB->Reserved = 0;
5063 pSMB->Flags = 0;
5064 pSMB->Timeout = 0;
5065 pSMB->Reserved2 = 0;
5066 byte_count = params + 1 ;
5067 pSMB->TotalParameterCount = cpu_to_le16(params);
5068 pSMB->ParameterCount = pSMB->TotalParameterCount;
5069 pSMB->ParameterOffset = cpu_to_le16(offsetof(
5070 struct smb_com_transaction2_qfsi_req, InformationLevel) - 4);
5071 pSMB->DataCount = 0;
5072 pSMB->DataOffset = 0;
5073 pSMB->SetupCount = 1;
5074 pSMB->Reserved3 = 0;
5075 pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION);
5076 pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_ATTRIBUTE_INFO);
5077 inc_rfc1001_len(pSMB, byte_count);
5078 pSMB->ByteCount = cpu_to_le16(byte_count);
5079
5080 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
5081 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
5082 if (rc) {
5083 cERROR(1, "Send error in QFSAttributeInfo = %d", rc);
5084 } else {
5085 rc = validate_t2((struct smb_t2_rsp *)pSMBr);
5086
5087 if (rc || get_bcc(&pSMBr->hdr) < 13) {
5088
5089 rc = -EIO;
5090 } else {
5091 __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
5092 response_data =
5093 (FILE_SYSTEM_ATTRIBUTE_INFO
5094 *) (((char *) &pSMBr->hdr.Protocol) +
5095 data_offset);
5096 memcpy(&tcon->fsAttrInfo, response_data,
5097 sizeof(FILE_SYSTEM_ATTRIBUTE_INFO));
5098 }
5099 }
5100 cifs_buf_release(pSMB);
5101
5102 if (rc == -EAGAIN)
5103 goto QFSAttributeRetry;
5104
5105 return rc;
5106}
5107
5108int
5109CIFSSMBQFSDeviceInfo(const int xid, struct cifs_tcon *tcon)
5110{
5111
5112 TRANSACTION2_QFSI_REQ *pSMB = NULL;
5113 TRANSACTION2_QFSI_RSP *pSMBr = NULL;
5114 FILE_SYSTEM_DEVICE_INFO *response_data;
5115 int rc = 0;
5116 int bytes_returned = 0;
5117 __u16 params, byte_count;
5118
5119 cFYI(1, "In QFSDeviceInfo");
5120QFSDeviceRetry:
5121 rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
5122 (void **) &pSMBr);
5123 if (rc)
5124 return rc;
5125
5126 params = 2;
5127 pSMB->TotalDataCount = 0;
5128 pSMB->MaxParameterCount = cpu_to_le16(2);
5129
5130 pSMB->MaxDataCount = cpu_to_le16(1000);
5131 pSMB->MaxSetupCount = 0;
5132 pSMB->Reserved = 0;
5133 pSMB->Flags = 0;
5134 pSMB->Timeout = 0;
5135 pSMB->Reserved2 = 0;
5136 byte_count = params + 1 ;
5137 pSMB->TotalParameterCount = cpu_to_le16(params);
5138 pSMB->ParameterCount = pSMB->TotalParameterCount;
5139 pSMB->ParameterOffset = cpu_to_le16(offsetof(
5140 struct smb_com_transaction2_qfsi_req, InformationLevel) - 4);
5141
5142 pSMB->DataCount = 0;
5143 pSMB->DataOffset = 0;
5144 pSMB->SetupCount = 1;
5145 pSMB->Reserved3 = 0;
5146 pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION);
5147 pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_DEVICE_INFO);
5148 inc_rfc1001_len(pSMB, byte_count);
5149 pSMB->ByteCount = cpu_to_le16(byte_count);
5150
5151 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
5152 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
5153 if (rc) {
5154 cFYI(1, "Send error in QFSDeviceInfo = %d", rc);
5155 } else {
5156 rc = validate_t2((struct smb_t2_rsp *)pSMBr);
5157
5158 if (rc || get_bcc(&pSMBr->hdr) <
5159 sizeof(FILE_SYSTEM_DEVICE_INFO))
5160 rc = -EIO;
5161 else {
5162 __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
5163 response_data =
5164 (FILE_SYSTEM_DEVICE_INFO *)
5165 (((char *) &pSMBr->hdr.Protocol) +
5166 data_offset);
5167 memcpy(&tcon->fsDevInfo, response_data,
5168 sizeof(FILE_SYSTEM_DEVICE_INFO));
5169 }
5170 }
5171 cifs_buf_release(pSMB);
5172
5173 if (rc == -EAGAIN)
5174 goto QFSDeviceRetry;
5175
5176 return rc;
5177}
5178
5179int
5180CIFSSMBQFSUnixInfo(const int xid, struct cifs_tcon *tcon)
5181{
5182
5183 TRANSACTION2_QFSI_REQ *pSMB = NULL;
5184 TRANSACTION2_QFSI_RSP *pSMBr = NULL;
5185 FILE_SYSTEM_UNIX_INFO *response_data;
5186 int rc = 0;
5187 int bytes_returned = 0;
5188 __u16 params, byte_count;
5189
5190 cFYI(1, "In QFSUnixInfo");
5191QFSUnixRetry:
5192 rc = smb_init_no_reconnect(SMB_COM_TRANSACTION2, 15, tcon,
5193 (void **) &pSMB, (void **) &pSMBr);
5194 if (rc)
5195 return rc;
5196
5197 params = 2;
5198 pSMB->TotalDataCount = 0;
5199 pSMB->DataCount = 0;
5200 pSMB->DataOffset = 0;
5201 pSMB->MaxParameterCount = cpu_to_le16(2);
5202
5203 pSMB->MaxDataCount = cpu_to_le16(100);
5204 pSMB->MaxSetupCount = 0;
5205 pSMB->Reserved = 0;
5206 pSMB->Flags = 0;
5207 pSMB->Timeout = 0;
5208 pSMB->Reserved2 = 0;
5209 byte_count = params + 1 ;
5210 pSMB->ParameterCount = cpu_to_le16(params);
5211 pSMB->TotalParameterCount = pSMB->ParameterCount;
5212 pSMB->ParameterOffset = cpu_to_le16(offsetof(struct
5213 smb_com_transaction2_qfsi_req, InformationLevel) - 4);
5214 pSMB->SetupCount = 1;
5215 pSMB->Reserved3 = 0;
5216 pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION);
5217 pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_CIFS_UNIX_INFO);
5218 inc_rfc1001_len(pSMB, byte_count);
5219 pSMB->ByteCount = cpu_to_le16(byte_count);
5220
5221 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
5222 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
5223 if (rc) {
5224 cERROR(1, "Send error in QFSUnixInfo = %d", rc);
5225 } else {
5226 rc = validate_t2((struct smb_t2_rsp *)pSMBr);
5227
5228 if (rc || get_bcc(&pSMBr->hdr) < 13) {
5229 rc = -EIO;
5230 } else {
5231 __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
5232 response_data =
5233 (FILE_SYSTEM_UNIX_INFO
5234 *) (((char *) &pSMBr->hdr.Protocol) +
5235 data_offset);
5236 memcpy(&tcon->fsUnixInfo, response_data,
5237 sizeof(FILE_SYSTEM_UNIX_INFO));
5238 }
5239 }
5240 cifs_buf_release(pSMB);
5241
5242 if (rc == -EAGAIN)
5243 goto QFSUnixRetry;
5244
5245
5246 return rc;
5247}
5248
5249int
5250CIFSSMBSetFSUnixInfo(const int xid, struct cifs_tcon *tcon, __u64 cap)
5251{
5252
5253 TRANSACTION2_SETFSI_REQ *pSMB = NULL;
5254 TRANSACTION2_SETFSI_RSP *pSMBr = NULL;
5255 int rc = 0;
5256 int bytes_returned = 0;
5257 __u16 params, param_offset, offset, byte_count;
5258
5259 cFYI(1, "In SETFSUnixInfo");
5260SETFSUnixRetry:
5261
5262 rc = smb_init_no_reconnect(SMB_COM_TRANSACTION2, 15, tcon,
5263 (void **) &pSMB, (void **) &pSMBr);
5264 if (rc)
5265 return rc;
5266
5267 params = 4;
5268 pSMB->MaxSetupCount = 0;
5269 pSMB->Reserved = 0;
5270 pSMB->Flags = 0;
5271 pSMB->Timeout = 0;
5272 pSMB->Reserved2 = 0;
5273 param_offset = offsetof(struct smb_com_transaction2_setfsi_req, FileNum)
5274 - 4;
5275 offset = param_offset + params;
5276
5277 pSMB->MaxParameterCount = cpu_to_le16(4);
5278
5279 pSMB->MaxDataCount = cpu_to_le16(100);
5280 pSMB->SetupCount = 1;
5281 pSMB->Reserved3 = 0;
5282 pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FS_INFORMATION);
5283 byte_count = 1 + params + 12;
5284
5285 pSMB->DataCount = cpu_to_le16(12);
5286 pSMB->ParameterCount = cpu_to_le16(params);
5287 pSMB->TotalDataCount = pSMB->DataCount;
5288 pSMB->TotalParameterCount = pSMB->ParameterCount;
5289 pSMB->ParameterOffset = cpu_to_le16(param_offset);
5290 pSMB->DataOffset = cpu_to_le16(offset);
5291
5292
5293 pSMB->FileNum = 0;
5294 pSMB->InformationLevel = cpu_to_le16(SMB_SET_CIFS_UNIX_INFO);
5295
5296
5297 pSMB->ClientUnixMajor = cpu_to_le16(CIFS_UNIX_MAJOR_VERSION);
5298 pSMB->ClientUnixMinor = cpu_to_le16(CIFS_UNIX_MINOR_VERSION);
5299 pSMB->ClientUnixCap = cpu_to_le64(cap);
5300
5301 inc_rfc1001_len(pSMB, byte_count);
5302 pSMB->ByteCount = cpu_to_le16(byte_count);
5303
5304 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
5305 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
5306 if (rc) {
5307 cERROR(1, "Send error in SETFSUnixInfo = %d", rc);
5308 } else {
5309 rc = validate_t2((struct smb_t2_rsp *)pSMBr);
5310 if (rc)
5311 rc = -EIO;
5312 }
5313 cifs_buf_release(pSMB);
5314
5315 if (rc == -EAGAIN)
5316 goto SETFSUnixRetry;
5317
5318 return rc;
5319}
5320
5321
5322
5323int
5324CIFSSMBQFSPosixInfo(const int xid, struct cifs_tcon *tcon,
5325 struct kstatfs *FSData)
5326{
5327
5328 TRANSACTION2_QFSI_REQ *pSMB = NULL;
5329 TRANSACTION2_QFSI_RSP *pSMBr = NULL;
5330 FILE_SYSTEM_POSIX_INFO *response_data;
5331 int rc = 0;
5332 int bytes_returned = 0;
5333 __u16 params, byte_count;
5334
5335 cFYI(1, "In QFSPosixInfo");
5336QFSPosixRetry:
5337 rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
5338 (void **) &pSMBr);
5339 if (rc)
5340 return rc;
5341
5342 params = 2;
5343 pSMB->TotalDataCount = 0;
5344 pSMB->DataCount = 0;
5345 pSMB->DataOffset = 0;
5346 pSMB->MaxParameterCount = cpu_to_le16(2);
5347
5348 pSMB->MaxDataCount = cpu_to_le16(100);
5349 pSMB->MaxSetupCount = 0;
5350 pSMB->Reserved = 0;
5351 pSMB->Flags = 0;
5352 pSMB->Timeout = 0;
5353 pSMB->Reserved2 = 0;
5354 byte_count = params + 1 ;
5355 pSMB->ParameterCount = cpu_to_le16(params);
5356 pSMB->TotalParameterCount = pSMB->ParameterCount;
5357 pSMB->ParameterOffset = cpu_to_le16(offsetof(struct
5358 smb_com_transaction2_qfsi_req, InformationLevel) - 4);
5359 pSMB->SetupCount = 1;
5360 pSMB->Reserved3 = 0;
5361 pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION);
5362 pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_POSIX_FS_INFO);
5363 inc_rfc1001_len(pSMB, byte_count);
5364 pSMB->ByteCount = cpu_to_le16(byte_count);
5365
5366 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
5367 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
5368 if (rc) {
5369 cFYI(1, "Send error in QFSUnixInfo = %d", rc);
5370 } else {
5371 rc = validate_t2((struct smb_t2_rsp *)pSMBr);
5372
5373 if (rc || get_bcc(&pSMBr->hdr) < 13) {
5374 rc = -EIO;
5375 } else {
5376 __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
5377 response_data =
5378 (FILE_SYSTEM_POSIX_INFO
5379 *) (((char *) &pSMBr->hdr.Protocol) +
5380 data_offset);
5381 FSData->f_bsize =
5382 le32_to_cpu(response_data->BlockSize);
5383 FSData->f_blocks =
5384 le64_to_cpu(response_data->TotalBlocks);
5385 FSData->f_bfree =
5386 le64_to_cpu(response_data->BlocksAvail);
5387 if (response_data->UserBlocksAvail == cpu_to_le64(-1)) {
5388 FSData->f_bavail = FSData->f_bfree;
5389 } else {
5390 FSData->f_bavail =
5391 le64_to_cpu(response_data->UserBlocksAvail);
5392 }
5393 if (response_data->TotalFileNodes != cpu_to_le64(-1))
5394 FSData->f_files =
5395 le64_to_cpu(response_data->TotalFileNodes);
5396 if (response_data->FreeFileNodes != cpu_to_le64(-1))
5397 FSData->f_ffree =
5398 le64_to_cpu(response_data->FreeFileNodes);
5399 }
5400 }
5401 cifs_buf_release(pSMB);
5402
5403 if (rc == -EAGAIN)
5404 goto QFSPosixRetry;
5405
5406 return rc;
5407}
5408
5409
5410
5411
5412
5413
5414
5415
5416int
5417CIFSSMBSetEOF(const int xid, struct cifs_tcon *tcon, const char *fileName,
5418 __u64 size, bool SetAllocation,
5419 const struct nls_table *nls_codepage, int remap)
5420{
5421 struct smb_com_transaction2_spi_req *pSMB = NULL;
5422 struct smb_com_transaction2_spi_rsp *pSMBr = NULL;
5423 struct file_end_of_file_info *parm_data;
5424 int name_len;
5425 int rc = 0;
5426 int bytes_returned = 0;
5427 __u16 params, byte_count, data_count, param_offset, offset;
5428
5429 cFYI(1, "In SetEOF");
5430SetEOFRetry:
5431 rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
5432 (void **) &pSMBr);
5433 if (rc)
5434 return rc;
5435
5436 if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
5437 name_len =
5438 cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName,
5439 PATH_MAX, nls_codepage, remap);
5440 name_len++;
5441 name_len *= 2;
5442 } else {
5443 name_len = strnlen(fileName, PATH_MAX);
5444 name_len++;
5445 strncpy(pSMB->FileName, fileName, name_len);
5446 }
5447 params = 6 + name_len;
5448 data_count = sizeof(struct file_end_of_file_info);
5449 pSMB->MaxParameterCount = cpu_to_le16(2);
5450 pSMB->MaxDataCount = cpu_to_le16(4100);
5451 pSMB->MaxSetupCount = 0;
5452 pSMB->Reserved = 0;
5453 pSMB->Flags = 0;
5454 pSMB->Timeout = 0;
5455 pSMB->Reserved2 = 0;
5456 param_offset = offsetof(struct smb_com_transaction2_spi_req,
5457 InformationLevel) - 4;
5458 offset = param_offset + params;
5459 if (SetAllocation) {
5460 if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU)
5461 pSMB->InformationLevel =
5462 cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO2);
5463 else
5464 pSMB->InformationLevel =
5465 cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO);
5466 } else {
5467 if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU)
5468 pSMB->InformationLevel =
5469 cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO2);
5470 else
5471 pSMB->InformationLevel =
5472 cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO);
5473 }
5474
5475 parm_data =
5476 (struct file_end_of_file_info *) (((char *) &pSMB->hdr.Protocol) +
5477 offset);
5478 pSMB->ParameterOffset = cpu_to_le16(param_offset);
5479 pSMB->DataOffset = cpu_to_le16(offset);
5480 pSMB->SetupCount = 1;
5481 pSMB->Reserved3 = 0;
5482 pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION);
5483 byte_count = 3 + params + data_count;
5484 pSMB->DataCount = cpu_to_le16(data_count);
5485 pSMB->TotalDataCount = pSMB->DataCount;
5486 pSMB->ParameterCount = cpu_to_le16(params);
5487 pSMB->TotalParameterCount = pSMB->ParameterCount;
5488 pSMB->Reserved4 = 0;
5489 inc_rfc1001_len(pSMB, byte_count);
5490 parm_data->FileSize = cpu_to_le64(size);
5491 pSMB->ByteCount = cpu_to_le16(byte_count);
5492 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
5493 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
5494 if (rc)
5495 cFYI(1, "SetPathInfo (file size) returned %d", rc);
5496
5497 cifs_buf_release(pSMB);
5498
5499 if (rc == -EAGAIN)
5500 goto SetEOFRetry;
5501
5502 return rc;
5503}
5504
5505int
5506CIFSSMBSetFileSize(const int xid, struct cifs_tcon *tcon, __u64 size,
5507 __u16 fid, __u32 pid_of_opener, bool SetAllocation)
5508{
5509 struct smb_com_transaction2_sfi_req *pSMB = NULL;
5510 struct file_end_of_file_info *parm_data;
5511 int rc = 0;
5512 __u16 params, param_offset, offset, byte_count, count;
5513
5514 cFYI(1, "SetFileSize (via SetFileInfo) %lld",
5515 (long long)size);
5516 rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB);
5517
5518 if (rc)
5519 return rc;
5520
5521 pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener);
5522 pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16));
5523
5524 params = 6;
5525 pSMB->MaxSetupCount = 0;
5526 pSMB->Reserved = 0;
5527 pSMB->Flags = 0;
5528 pSMB->Timeout = 0;
5529 pSMB->Reserved2 = 0;
5530 param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4;
5531 offset = param_offset + params;
5532
5533 count = sizeof(struct file_end_of_file_info);
5534 pSMB->MaxParameterCount = cpu_to_le16(2);
5535
5536 pSMB->MaxDataCount = cpu_to_le16(1000);
5537 pSMB->SetupCount = 1;
5538 pSMB->Reserved3 = 0;
5539 pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION);
5540 byte_count = 3 + params + count;
5541 pSMB->DataCount = cpu_to_le16(count);
5542 pSMB->ParameterCount = cpu_to_le16(params);
5543 pSMB->TotalDataCount = pSMB->DataCount;
5544 pSMB->TotalParameterCount = pSMB->ParameterCount;
5545 pSMB->ParameterOffset = cpu_to_le16(param_offset);
5546 parm_data =
5547 (struct file_end_of_file_info *) (((char *) &pSMB->hdr.Protocol)
5548 + offset);
5549 pSMB->DataOffset = cpu_to_le16(offset);
5550 parm_data->FileSize = cpu_to_le64(size);
5551 pSMB->Fid = fid;
5552 if (SetAllocation) {
5553 if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU)
5554 pSMB->InformationLevel =
5555 cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO2);
5556 else
5557 pSMB->InformationLevel =
5558 cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO);
5559 } else {
5560 if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU)
5561 pSMB->InformationLevel =
5562 cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO2);
5563 else
5564 pSMB->InformationLevel =
5565 cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO);
5566 }
5567 pSMB->Reserved4 = 0;
5568 inc_rfc1001_len(pSMB, byte_count);
5569 pSMB->ByteCount = cpu_to_le16(byte_count);
5570 rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0);
5571 if (rc) {
5572 cFYI(1, "Send error in SetFileInfo (SetFileSize) = %d", rc);
5573 }
5574
5575
5576
5577
5578 return rc;
5579}
5580
5581
5582
5583
5584
5585
5586
5587int
5588CIFSSMBSetFileInfo(const int xid, struct cifs_tcon *tcon,
5589 const FILE_BASIC_INFO *data, __u16 fid, __u32 pid_of_opener)
5590{
5591 struct smb_com_transaction2_sfi_req *pSMB = NULL;
5592 char *data_offset;
5593 int rc = 0;
5594 __u16 params, param_offset, offset, byte_count, count;
5595
5596 cFYI(1, "Set Times (via SetFileInfo)");
5597 rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB);
5598
5599 if (rc)
5600 return rc;
5601
5602 pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener);
5603 pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16));
5604
5605 params = 6;
5606 pSMB->MaxSetupCount = 0;
5607 pSMB->Reserved = 0;
5608 pSMB->Flags = 0;
5609 pSMB->Timeout = 0;
5610 pSMB->Reserved2 = 0;
5611 param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4;
5612 offset = param_offset + params;
5613
5614 data_offset = (char *)pSMB +
5615 offsetof(struct smb_hdr, Protocol) + offset;
5616
5617 count = sizeof(FILE_BASIC_INFO);
5618 pSMB->MaxParameterCount = cpu_to_le16(2);
5619
5620 pSMB->MaxDataCount = cpu_to_le16(1000);
5621 pSMB->SetupCount = 1;
5622 pSMB->Reserved3 = 0;
5623 pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION);
5624 byte_count = 3 + params + count;
5625 pSMB->DataCount = cpu_to_le16(count);
5626 pSMB->ParameterCount = cpu_to_le16(params);
5627 pSMB->TotalDataCount = pSMB->DataCount;
5628 pSMB->TotalParameterCount = pSMB->ParameterCount;
5629 pSMB->ParameterOffset = cpu_to_le16(param_offset);
5630 pSMB->DataOffset = cpu_to_le16(offset);
5631 pSMB->Fid = fid;
5632 if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU)
5633 pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO2);
5634 else
5635 pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO);
5636 pSMB->Reserved4 = 0;
5637 inc_rfc1001_len(pSMB, byte_count);
5638 pSMB->ByteCount = cpu_to_le16(byte_count);
5639 memcpy(data_offset, data, sizeof(FILE_BASIC_INFO));
5640 rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0);
5641 if (rc)
5642 cFYI(1, "Send error in Set Time (SetFileInfo) = %d", rc);
5643
5644
5645
5646
5647 return rc;
5648}
5649
5650int
5651CIFSSMBSetFileDisposition(const int xid, struct cifs_tcon *tcon,
5652 bool delete_file, __u16 fid, __u32 pid_of_opener)
5653{
5654 struct smb_com_transaction2_sfi_req *pSMB = NULL;
5655 char *data_offset;
5656 int rc = 0;
5657 __u16 params, param_offset, offset, byte_count, count;
5658
5659 cFYI(1, "Set File Disposition (via SetFileInfo)");
5660 rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB);
5661
5662 if (rc)
5663 return rc;
5664
5665 pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener);
5666 pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16));
5667
5668 params = 6;
5669 pSMB->MaxSetupCount = 0;
5670 pSMB->Reserved = 0;
5671 pSMB->Flags = 0;
5672 pSMB->Timeout = 0;
5673 pSMB->Reserved2 = 0;
5674 param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4;
5675 offset = param_offset + params;
5676
5677 data_offset = (char *) (&pSMB->hdr.Protocol) + offset;
5678
5679 count = 1;
5680 pSMB->MaxParameterCount = cpu_to_le16(2);
5681
5682 pSMB->MaxDataCount = cpu_to_le16(1000);
5683 pSMB->SetupCount = 1;
5684 pSMB->Reserved3 = 0;
5685 pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION);
5686 byte_count = 3 + params + count;
5687 pSMB->DataCount = cpu_to_le16(count);
5688 pSMB->ParameterCount = cpu_to_le16(params);
5689 pSMB->TotalDataCount = pSMB->DataCount;
5690 pSMB->TotalParameterCount = pSMB->ParameterCount;
5691 pSMB->ParameterOffset = cpu_to_le16(param_offset);
5692 pSMB->DataOffset = cpu_to_le16(offset);
5693 pSMB->Fid = fid;
5694 pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_DISPOSITION_INFO);
5695 pSMB->Reserved4 = 0;
5696 inc_rfc1001_len(pSMB, byte_count);
5697 pSMB->ByteCount = cpu_to_le16(byte_count);
5698 *data_offset = delete_file ? 1 : 0;
5699 rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0);
5700 if (rc)
5701 cFYI(1, "Send error in SetFileDisposition = %d", rc);
5702
5703 return rc;
5704}
5705
5706int
5707CIFSSMBSetPathInfo(const int xid, struct cifs_tcon *tcon,
5708 const char *fileName, const FILE_BASIC_INFO *data,
5709 const struct nls_table *nls_codepage, int remap)
5710{
5711 TRANSACTION2_SPI_REQ *pSMB = NULL;
5712 TRANSACTION2_SPI_RSP *pSMBr = NULL;
5713 int name_len;
5714 int rc = 0;
5715 int bytes_returned = 0;
5716 char *data_offset;
5717 __u16 params, param_offset, offset, byte_count, count;
5718
5719 cFYI(1, "In SetTimes");
5720
5721SetTimesRetry:
5722 rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
5723 (void **) &pSMBr);
5724 if (rc)
5725 return rc;
5726
5727 if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
5728 name_len =
5729 cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName,
5730 PATH_MAX, nls_codepage, remap);
5731 name_len++;
5732 name_len *= 2;
5733 } else {
5734 name_len = strnlen(fileName, PATH_MAX);
5735 name_len++;
5736 strncpy(pSMB->FileName, fileName, name_len);
5737 }
5738
5739 params = 6 + name_len;
5740 count = sizeof(FILE_BASIC_INFO);
5741 pSMB->MaxParameterCount = cpu_to_le16(2);
5742
5743 pSMB->MaxDataCount = cpu_to_le16(1000);
5744 pSMB->MaxSetupCount = 0;
5745 pSMB->Reserved = 0;
5746 pSMB->Flags = 0;
5747 pSMB->Timeout = 0;
5748 pSMB->Reserved2 = 0;
5749 param_offset = offsetof(struct smb_com_transaction2_spi_req,
5750 InformationLevel) - 4;
5751 offset = param_offset + params;
5752 data_offset = (char *) (&pSMB->hdr.Protocol) + offset;
5753 pSMB->ParameterOffset = cpu_to_le16(param_offset);
5754 pSMB->DataOffset = cpu_to_le16(offset);
5755 pSMB->SetupCount = 1;
5756 pSMB->Reserved3 = 0;
5757 pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION);
5758 byte_count = 3 + params + count;
5759
5760 pSMB->DataCount = cpu_to_le16(count);
5761 pSMB->ParameterCount = cpu_to_le16(params);
5762 pSMB->TotalDataCount = pSMB->DataCount;
5763 pSMB->TotalParameterCount = pSMB->ParameterCount;
5764 if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU)
5765 pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO2);
5766 else
5767 pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO);
5768 pSMB->Reserved4 = 0;
5769 inc_rfc1001_len(pSMB, byte_count);
5770 memcpy(data_offset, data, sizeof(FILE_BASIC_INFO));
5771 pSMB->ByteCount = cpu_to_le16(byte_count);
5772 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
5773 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
5774 if (rc)
5775 cFYI(1, "SetPathInfo (times) returned %d", rc);
5776
5777 cifs_buf_release(pSMB);
5778
5779 if (rc == -EAGAIN)
5780 goto SetTimesRetry;
5781
5782 return rc;
5783}
5784
5785
5786
5787#if 0
5788
5789
5790int
5791CIFSSMBSetAttrLegacy(int xid, struct cifs_tcon *tcon, char *fileName,
5792 __u16 dos_attrs, const struct nls_table *nls_codepage)
5793{
5794 SETATTR_REQ *pSMB = NULL;
5795 SETATTR_RSP *pSMBr = NULL;
5796 int rc = 0;
5797 int bytes_returned;
5798 int name_len;
5799
5800 cFYI(1, "In SetAttrLegacy");
5801
5802SetAttrLgcyRetry:
5803 rc = smb_init(SMB_COM_SETATTR, 8, tcon, (void **) &pSMB,
5804 (void **) &pSMBr);
5805 if (rc)
5806 return rc;
5807
5808 if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
5809 name_len =
5810 ConvertToUTF16((__le16 *) pSMB->fileName, fileName,
5811 PATH_MAX, nls_codepage);
5812 name_len++;
5813 name_len *= 2;
5814 } else {
5815 name_len = strnlen(fileName, PATH_MAX);
5816 name_len++;
5817 strncpy(pSMB->fileName, fileName, name_len);
5818 }
5819 pSMB->attr = cpu_to_le16(dos_attrs);
5820 pSMB->BufferFormat = 0x04;
5821 inc_rfc1001_len(pSMB, name_len + 1);
5822 pSMB->ByteCount = cpu_to_le16(name_len + 1);
5823 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
5824 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
5825 if (rc)
5826 cFYI(1, "Error in LegacySetAttr = %d", rc);
5827
5828 cifs_buf_release(pSMB);
5829
5830 if (rc == -EAGAIN)
5831 goto SetAttrLgcyRetry;
5832
5833 return rc;
5834}
5835#endif
5836
5837static void
5838cifs_fill_unix_set_info(FILE_UNIX_BASIC_INFO *data_offset,
5839 const struct cifs_unix_set_info_args *args)
5840{
5841 u64 mode = args->mode;
5842
5843
5844
5845
5846
5847
5848
5849
5850 data_offset->EndOfFile = cpu_to_le64(NO_CHANGE_64);
5851 data_offset->NumOfBytes = cpu_to_le64(NO_CHANGE_64);
5852 data_offset->LastStatusChange = cpu_to_le64(args->ctime);
5853 data_offset->LastAccessTime = cpu_to_le64(args->atime);
5854 data_offset->LastModificationTime = cpu_to_le64(args->mtime);
5855 data_offset->Uid = cpu_to_le64(args->uid);
5856 data_offset->Gid = cpu_to_le64(args->gid);
5857
5858 data_offset->DevMajor = cpu_to_le64(MAJOR(args->device));
5859 data_offset->DevMinor = cpu_to_le64(MINOR(args->device));
5860 data_offset->Permissions = cpu_to_le64(mode);
5861
5862 if (S_ISREG(mode))
5863 data_offset->Type = cpu_to_le32(UNIX_FILE);
5864 else if (S_ISDIR(mode))
5865 data_offset->Type = cpu_to_le32(UNIX_DIR);
5866 else if (S_ISLNK(mode))
5867 data_offset->Type = cpu_to_le32(UNIX_SYMLINK);
5868 else if (S_ISCHR(mode))
5869 data_offset->Type = cpu_to_le32(UNIX_CHARDEV);
5870 else if (S_ISBLK(mode))
5871 data_offset->Type = cpu_to_le32(UNIX_BLOCKDEV);
5872 else if (S_ISFIFO(mode))
5873 data_offset->Type = cpu_to_le32(UNIX_FIFO);
5874 else if (S_ISSOCK(mode))
5875 data_offset->Type = cpu_to_le32(UNIX_SOCKET);
5876}
5877
5878int
5879CIFSSMBUnixSetFileInfo(const int xid, struct cifs_tcon *tcon,
5880 const struct cifs_unix_set_info_args *args,
5881 u16 fid, u32 pid_of_opener)
5882{
5883 struct smb_com_transaction2_sfi_req *pSMB = NULL;
5884 char *data_offset;
5885 int rc = 0;
5886 u16 params, param_offset, offset, byte_count, count;
5887
5888 cFYI(1, "Set Unix Info (via SetFileInfo)");
5889 rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB);
5890
5891 if (rc)
5892 return rc;
5893
5894 pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener);
5895 pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16));
5896
5897 params = 6;
5898 pSMB->MaxSetupCount = 0;
5899 pSMB->Reserved = 0;
5900 pSMB->Flags = 0;
5901 pSMB->Timeout = 0;
5902 pSMB->Reserved2 = 0;
5903 param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4;
5904 offset = param_offset + params;
5905
5906 data_offset = (char *)pSMB +
5907 offsetof(struct smb_hdr, Protocol) + offset;
5908
5909 count = sizeof(FILE_UNIX_BASIC_INFO);
5910
5911 pSMB->MaxParameterCount = cpu_to_le16(2);
5912
5913 pSMB->MaxDataCount = cpu_to_le16(1000);
5914 pSMB->SetupCount = 1;
5915 pSMB->Reserved3 = 0;
5916 pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION);
5917 byte_count = 3 + params + count;
5918 pSMB->DataCount = cpu_to_le16(count);
5919 pSMB->ParameterCount = cpu_to_le16(params);
5920 pSMB->TotalDataCount = pSMB->DataCount;
5921 pSMB->TotalParameterCount = pSMB->ParameterCount;
5922 pSMB->ParameterOffset = cpu_to_le16(param_offset);
5923 pSMB->DataOffset = cpu_to_le16(offset);
5924 pSMB->Fid = fid;
5925 pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_BASIC);
5926 pSMB->Reserved4 = 0;
5927 inc_rfc1001_len(pSMB, byte_count);
5928 pSMB->ByteCount = cpu_to_le16(byte_count);
5929
5930 cifs_fill_unix_set_info((FILE_UNIX_BASIC_INFO *)data_offset, args);
5931
5932 rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0);
5933 if (rc)
5934 cFYI(1, "Send error in Set Time (SetFileInfo) = %d", rc);
5935
5936
5937
5938
5939 return rc;
5940}
5941
5942int
5943CIFSSMBUnixSetPathInfo(const int xid, struct cifs_tcon *tcon, char *fileName,
5944 const struct cifs_unix_set_info_args *args,
5945 const struct nls_table *nls_codepage, int remap)
5946{
5947 TRANSACTION2_SPI_REQ *pSMB = NULL;
5948 TRANSACTION2_SPI_RSP *pSMBr = NULL;
5949 int name_len;
5950 int rc = 0;
5951 int bytes_returned = 0;
5952 FILE_UNIX_BASIC_INFO *data_offset;
5953 __u16 params, param_offset, offset, count, byte_count;
5954
5955 cFYI(1, "In SetUID/GID/Mode");
5956setPermsRetry:
5957 rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
5958 (void **) &pSMBr);
5959 if (rc)
5960 return rc;
5961
5962 if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
5963 name_len =
5964 cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName,
5965 PATH_MAX, nls_codepage, remap);
5966 name_len++;
5967 name_len *= 2;
5968 } else {
5969 name_len = strnlen(fileName, PATH_MAX);
5970 name_len++;
5971 strncpy(pSMB->FileName, fileName, name_len);
5972 }
5973
5974 params = 6 + name_len;
5975 count = sizeof(FILE_UNIX_BASIC_INFO);
5976 pSMB->MaxParameterCount = cpu_to_le16(2);
5977
5978 pSMB->MaxDataCount = cpu_to_le16(1000);
5979 pSMB->MaxSetupCount = 0;
5980 pSMB->Reserved = 0;
5981 pSMB->Flags = 0;
5982 pSMB->Timeout = 0;
5983 pSMB->Reserved2 = 0;
5984 param_offset = offsetof(struct smb_com_transaction2_spi_req,
5985 InformationLevel) - 4;
5986 offset = param_offset + params;
5987 data_offset =
5988 (FILE_UNIX_BASIC_INFO *) ((char *) &pSMB->hdr.Protocol +
5989 offset);
5990 memset(data_offset, 0, count);
5991 pSMB->DataOffset = cpu_to_le16(offset);
5992 pSMB->ParameterOffset = cpu_to_le16(param_offset);
5993 pSMB->SetupCount = 1;
5994 pSMB->Reserved3 = 0;
5995 pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION);
5996 byte_count = 3 + params + count;
5997 pSMB->ParameterCount = cpu_to_le16(params);
5998 pSMB->DataCount = cpu_to_le16(count);
5999 pSMB->TotalParameterCount = pSMB->ParameterCount;
6000 pSMB->TotalDataCount = pSMB->DataCount;
6001 pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_BASIC);
6002 pSMB->Reserved4 = 0;
6003 inc_rfc1001_len(pSMB, byte_count);
6004
6005 cifs_fill_unix_set_info(data_offset, args);
6006
6007 pSMB->ByteCount = cpu_to_le16(byte_count);
6008 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
6009 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
6010 if (rc)
6011 cFYI(1, "SetPathInfo (perms) returned %d", rc);
6012
6013 cifs_buf_release(pSMB);
6014 if (rc == -EAGAIN)
6015 goto setPermsRetry;
6016 return rc;
6017}
6018
6019#ifdef CONFIG_CIFS_XATTR
6020
6021
6022
6023
6024
6025
6026
6027
6028
6029ssize_t
6030CIFSSMBQAllEAs(const int xid, struct cifs_tcon *tcon,
6031 const unsigned char *searchName, const unsigned char *ea_name,
6032 char *EAData, size_t buf_size,
6033 const struct nls_table *nls_codepage, int remap)
6034{
6035
6036 TRANSACTION2_QPI_REQ *pSMB = NULL;
6037 TRANSACTION2_QPI_RSP *pSMBr = NULL;
6038 int rc = 0;
6039 int bytes_returned;
6040 int list_len;
6041 struct fealist *ea_response_data;
6042 struct fea *temp_fea;
6043 char *temp_ptr;
6044 char *end_of_smb;
6045 __u16 params, byte_count, data_offset;
6046 unsigned int ea_name_len = ea_name ? strlen(ea_name) : 0;
6047
6048 cFYI(1, "In Query All EAs path %s", searchName);
6049QAllEAsRetry:
6050 rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
6051 (void **) &pSMBr);
6052 if (rc)
6053 return rc;
6054
6055 if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
6056 list_len =
6057 cifsConvertToUTF16((__le16 *) pSMB->FileName, searchName,
6058 PATH_MAX, nls_codepage, remap);
6059 list_len++;
6060 list_len *= 2;
6061 } else {
6062 list_len = strnlen(searchName, PATH_MAX);
6063 list_len++;
6064 strncpy(pSMB->FileName, searchName, list_len);
6065 }
6066
6067 params = 2 + 4 + list_len ;
6068 pSMB->TotalDataCount = 0;
6069 pSMB->MaxParameterCount = cpu_to_le16(2);
6070
6071 pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize);
6072 pSMB->MaxSetupCount = 0;
6073 pSMB->Reserved = 0;
6074 pSMB->Flags = 0;
6075 pSMB->Timeout = 0;
6076 pSMB->Reserved2 = 0;
6077 pSMB->ParameterOffset = cpu_to_le16(offsetof(
6078 struct smb_com_transaction2_qpi_req, InformationLevel) - 4);
6079 pSMB->DataCount = 0;
6080 pSMB->DataOffset = 0;
6081 pSMB->SetupCount = 1;
6082 pSMB->Reserved3 = 0;
6083 pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION);
6084 byte_count = params + 1 ;
6085 pSMB->TotalParameterCount = cpu_to_le16(params);
6086 pSMB->ParameterCount = pSMB->TotalParameterCount;
6087 pSMB->InformationLevel = cpu_to_le16(SMB_INFO_QUERY_ALL_EAS);
6088 pSMB->Reserved4 = 0;
6089 inc_rfc1001_len(pSMB, byte_count);
6090 pSMB->ByteCount = cpu_to_le16(byte_count);
6091
6092 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
6093 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
6094 if (rc) {
6095 cFYI(1, "Send error in QueryAllEAs = %d", rc);
6096 goto QAllEAsOut;
6097 }
6098
6099
6100
6101
6102
6103
6104 rc = validate_t2((struct smb_t2_rsp *)pSMBr);
6105 if (rc || get_bcc(&pSMBr->hdr) < 4) {
6106 rc = -EIO;
6107 goto QAllEAsOut;
6108 }
6109
6110
6111
6112
6113
6114
6115
6116
6117
6118 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
6119 ea_response_data = (struct fealist *)
6120 (((char *) &pSMBr->hdr.Protocol) + data_offset);
6121
6122 list_len = le32_to_cpu(ea_response_data->list_len);
6123 cFYI(1, "ea length %d", list_len);
6124 if (list_len <= 8) {
6125 cFYI(1, "empty EA list returned from server");
6126 goto QAllEAsOut;
6127 }
6128
6129
6130 end_of_smb = (char *)pByteArea(&pSMBr->hdr) + get_bcc(&pSMBr->hdr);
6131 if ((char *)ea_response_data + list_len > end_of_smb) {
6132 cFYI(1, "EA list appears to go beyond SMB");
6133 rc = -EIO;
6134 goto QAllEAsOut;
6135 }
6136
6137
6138 list_len -= 4;
6139 temp_fea = ea_response_data->list;
6140 temp_ptr = (char *)temp_fea;
6141 while (list_len > 0) {
6142 unsigned int name_len;
6143 __u16 value_len;
6144
6145 list_len -= 4;
6146 temp_ptr += 4;
6147
6148 if (list_len < 0) {
6149 cFYI(1, "EA entry goes beyond length of list");
6150 rc = -EIO;
6151 goto QAllEAsOut;
6152 }
6153
6154 name_len = temp_fea->name_len;
6155 value_len = le16_to_cpu(temp_fea->value_len);
6156 list_len -= name_len + 1 + value_len;
6157 if (list_len < 0) {
6158 cFYI(1, "EA entry goes beyond length of list");
6159 rc = -EIO;
6160 goto QAllEAsOut;
6161 }
6162
6163 if (ea_name) {
6164 if (ea_name_len == name_len &&
6165 memcmp(ea_name, temp_ptr, name_len) == 0) {
6166 temp_ptr += name_len + 1;
6167 rc = value_len;
6168 if (buf_size == 0)
6169 goto QAllEAsOut;
6170 if ((size_t)value_len > buf_size) {
6171 rc = -ERANGE;
6172 goto QAllEAsOut;
6173 }
6174 memcpy(EAData, temp_ptr, value_len);
6175 goto QAllEAsOut;
6176 }
6177 } else {
6178
6179 rc += (5 + 1 + name_len);
6180 if (rc < (int) buf_size) {
6181 memcpy(EAData, "user.", 5);
6182 EAData += 5;
6183 memcpy(EAData, temp_ptr, name_len);
6184 EAData += name_len;
6185
6186 *EAData = 0;
6187 ++EAData;
6188 } else if (buf_size == 0) {
6189
6190 } else {
6191
6192 rc = -ERANGE;
6193 break;
6194 }
6195 }
6196 temp_ptr += name_len + 1 + value_len;
6197 temp_fea = (struct fea *)temp_ptr;
6198 }
6199
6200
6201 if (ea_name)
6202 rc = -ENODATA;
6203
6204QAllEAsOut:
6205 cifs_buf_release(pSMB);
6206 if (rc == -EAGAIN)
6207 goto QAllEAsRetry;
6208
6209 return (ssize_t)rc;
6210}
6211
6212int
6213CIFSSMBSetEA(const int xid, struct cifs_tcon *tcon, const char *fileName,
6214 const char *ea_name, const void *ea_value,
6215 const __u16 ea_value_len, const struct nls_table *nls_codepage,
6216 int remap)
6217{
6218 struct smb_com_transaction2_spi_req *pSMB = NULL;
6219 struct smb_com_transaction2_spi_rsp *pSMBr = NULL;
6220 struct fealist *parm_data;
6221 int name_len;
6222 int rc = 0;
6223 int bytes_returned = 0;
6224 __u16 params, param_offset, byte_count, offset, count;
6225
6226 cFYI(1, "In SetEA");
6227SetEARetry:
6228 rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
6229 (void **) &pSMBr);
6230 if (rc)
6231 return rc;
6232
6233 if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
6234 name_len =
6235 cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName,
6236 PATH_MAX, nls_codepage, remap);
6237 name_len++;
6238 name_len *= 2;
6239 } else {
6240 name_len = strnlen(fileName, PATH_MAX);
6241 name_len++;
6242 strncpy(pSMB->FileName, fileName, name_len);
6243 }
6244
6245 params = 6 + name_len;
6246
6247
6248
6249
6250 if (ea_name == NULL)
6251 name_len = 0;
6252 else
6253 name_len = strnlen(ea_name, 255);
6254
6255 count = sizeof(*parm_data) + ea_value_len + name_len;
6256 pSMB->MaxParameterCount = cpu_to_le16(2);
6257
6258 pSMB->MaxDataCount = cpu_to_le16(1000);
6259 pSMB->MaxSetupCount = 0;
6260 pSMB->Reserved = 0;
6261 pSMB->Flags = 0;
6262 pSMB->Timeout = 0;
6263 pSMB->Reserved2 = 0;
6264 param_offset = offsetof(struct smb_com_transaction2_spi_req,
6265 InformationLevel) - 4;
6266 offset = param_offset + params;
6267 pSMB->InformationLevel =
6268 cpu_to_le16(SMB_SET_FILE_EA);
6269
6270 parm_data =
6271 (struct fealist *) (((char *) &pSMB->hdr.Protocol) +
6272 offset);
6273 pSMB->ParameterOffset = cpu_to_le16(param_offset);
6274 pSMB->DataOffset = cpu_to_le16(offset);
6275 pSMB->SetupCount = 1;
6276 pSMB->Reserved3 = 0;
6277 pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION);
6278 byte_count = 3 + params + count;
6279 pSMB->DataCount = cpu_to_le16(count);
6280 parm_data->list_len = cpu_to_le32(count);
6281 parm_data->list[0].EA_flags = 0;
6282
6283 parm_data->list[0].name_len = (__u8)name_len;
6284
6285 if (ea_name)
6286 strncpy(parm_data->list[0].name, ea_name, name_len);
6287 parm_data->list[0].name[name_len] = 0;
6288 parm_data->list[0].value_len = cpu_to_le16(ea_value_len);
6289
6290
6291
6292
6293
6294
6295 if (ea_value_len)
6296 memcpy(parm_data->list[0].name+name_len+1,
6297 ea_value, ea_value_len);
6298
6299 pSMB->TotalDataCount = pSMB->DataCount;
6300 pSMB->ParameterCount = cpu_to_le16(params);
6301 pSMB->TotalParameterCount = pSMB->ParameterCount;
6302 pSMB->Reserved4 = 0;
6303 inc_rfc1001_len(pSMB, byte_count);
6304 pSMB->ByteCount = cpu_to_le16(byte_count);
6305 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
6306 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
6307 if (rc)
6308 cFYI(1, "SetPathInfo (EA) returned %d", rc);
6309
6310 cifs_buf_release(pSMB);
6311
6312 if (rc == -EAGAIN)
6313 goto SetEARetry;
6314
6315 return rc;
6316}
6317#endif
6318
6319#ifdef CONFIG_CIFS_DNOTIFY_EXPERIMENTAL
6320
6321
6322
6323
6324
6325
6326
6327
6328
6329
6330
6331
6332
6333
6334
6335
6336
6337
6338
6339
6340int CIFSSMBNotify(const int xid, struct cifs_tcon *tcon,
6341 const int notify_subdirs, const __u16 netfid,
6342 __u32 filter, struct file *pfile, int multishot,
6343 const struct nls_table *nls_codepage)
6344{
6345 int rc = 0;
6346 struct smb_com_transaction_change_notify_req *pSMB = NULL;
6347 struct smb_com_ntransaction_change_notify_rsp *pSMBr = NULL;
6348 struct dir_notify_req *dnotify_req;
6349 int bytes_returned;
6350
6351 cFYI(1, "In CIFSSMBNotify for file handle %d", (int)netfid);
6352 rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB,
6353 (void **) &pSMBr);
6354 if (rc)
6355 return rc;
6356
6357 pSMB->TotalParameterCount = 0 ;
6358 pSMB->TotalDataCount = 0;
6359 pSMB->MaxParameterCount = cpu_to_le32(2);
6360 pSMB->MaxDataCount = cpu_to_le32(CIFSMaxBufSize & 0xFFFFFF00);
6361 pSMB->MaxSetupCount = 4;
6362 pSMB->Reserved = 0;
6363 pSMB->ParameterOffset = 0;
6364 pSMB->DataCount = 0;
6365 pSMB->DataOffset = 0;
6366 pSMB->SetupCount = 4;
6367 pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_NOTIFY_CHANGE);
6368 pSMB->ParameterCount = pSMB->TotalParameterCount;
6369 if (notify_subdirs)
6370 pSMB->WatchTree = 1;
6371 pSMB->Reserved2 = 0;
6372 pSMB->CompletionFilter = cpu_to_le32(filter);
6373 pSMB->Fid = netfid;
6374 pSMB->ByteCount = 0;
6375
6376 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
6377 (struct smb_hdr *)pSMBr, &bytes_returned,
6378 CIFS_ASYNC_OP);
6379 if (rc) {
6380 cFYI(1, "Error in Notify = %d", rc);
6381 } else {
6382
6383
6384 dnotify_req = kmalloc(
6385 sizeof(struct dir_notify_req),
6386 GFP_KERNEL);
6387 if (dnotify_req) {
6388 dnotify_req->Pid = pSMB->hdr.Pid;
6389 dnotify_req->PidHigh = pSMB->hdr.PidHigh;
6390 dnotify_req->Mid = pSMB->hdr.Mid;
6391 dnotify_req->Tid = pSMB->hdr.Tid;
6392 dnotify_req->Uid = pSMB->hdr.Uid;
6393 dnotify_req->netfid = netfid;
6394 dnotify_req->pfile = pfile;
6395 dnotify_req->filter = filter;
6396 dnotify_req->multishot = multishot;
6397 spin_lock(&GlobalMid_Lock);
6398 list_add_tail(&dnotify_req->lhead,
6399 &GlobalDnotifyReqList);
6400 spin_unlock(&GlobalMid_Lock);
6401 } else
6402 rc = -ENOMEM;
6403 }
6404 cifs_buf_release(pSMB);
6405 return rc;
6406}
6407#endif
6408