2 * SMB1 (CIFS) version specific operations
4 * Copyright (c) 2012, Jeff Layton <jlayton@redhat.com>
6 * This library is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License v2 as published
8 * by the Free Software Foundation.
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
13 * the GNU Lesser General Public License for more details.
15 * You should have received a copy of the GNU Lesser General Public License
16 * along with this library; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 #include <linux/pagemap.h>
21 #include <linux/vfs.h>
23 #include "cifsproto.h"
24 #include "cifs_debug.h"
28 * An NT cancel request header looks just like the original request except:
30 * The Command is SMB_COM_NT_CANCEL
31 * The WordCount is zeroed out
32 * The ByteCount is zeroed out
34 * This function mangles an existing request buffer into a
35 * SMB_COM_NT_CANCEL request and then sends it.
38 send_nt_cancel(struct TCP_Server_Info
*server
, void *buf
,
39 struct mid_q_entry
*mid
)
42 struct smb_hdr
*in_buf
= (struct smb_hdr
*)buf
;
44 /* -4 for RFC1001 length and +2 for BCC field */
45 in_buf
->smb_buf_length
= cpu_to_be32(sizeof(struct smb_hdr
) - 4 + 2);
46 in_buf
->Command
= SMB_COM_NT_CANCEL
;
47 in_buf
->WordCount
= 0;
50 mutex_lock(&server
->srv_mutex
);
51 rc
= cifs_sign_smb(in_buf
, server
, &mid
->sequence_number
);
53 mutex_unlock(&server
->srv_mutex
);
56 rc
= smb_send(server
, in_buf
, be32_to_cpu(in_buf
->smb_buf_length
));
57 mutex_unlock(&server
->srv_mutex
);
59 cFYI(1, "issued NT_CANCEL for mid %u, rc = %d",
66 cifs_compare_fids(struct cifsFileInfo
*ob1
, struct cifsFileInfo
*ob2
)
68 return ob1
->fid
.netfid
== ob2
->fid
.netfid
;
72 cifs_read_data_offset(char *buf
)
74 READ_RSP
*rsp
= (READ_RSP
*)buf
;
75 return le16_to_cpu(rsp
->DataOffset
);
79 cifs_read_data_length(char *buf
)
81 READ_RSP
*rsp
= (READ_RSP
*)buf
;
82 return (le16_to_cpu(rsp
->DataLengthHigh
) << 16) +
83 le16_to_cpu(rsp
->DataLength
);
86 static struct mid_q_entry
*
87 cifs_find_mid(struct TCP_Server_Info
*server
, char *buffer
)
89 struct smb_hdr
*buf
= (struct smb_hdr
*)buffer
;
90 struct mid_q_entry
*mid
;
92 spin_lock(&GlobalMid_Lock
);
93 list_for_each_entry(mid
, &server
->pending_mid_q
, qhead
) {
94 if (mid
->mid
== buf
->Mid
&&
95 mid
->mid_state
== MID_REQUEST_SUBMITTED
&&
96 le16_to_cpu(mid
->command
) == buf
->Command
) {
97 spin_unlock(&GlobalMid_Lock
);
101 spin_unlock(&GlobalMid_Lock
);
106 cifs_add_credits(struct TCP_Server_Info
*server
, const unsigned int add
,
109 spin_lock(&server
->req_lock
);
110 server
->credits
+= add
;
112 spin_unlock(&server
->req_lock
);
113 wake_up(&server
->request_q
);
117 cifs_set_credits(struct TCP_Server_Info
*server
, const int val
)
119 spin_lock(&server
->req_lock
);
120 server
->credits
= val
;
121 server
->oplocks
= val
> 1 ? enable_oplocks
: false;
122 spin_unlock(&server
->req_lock
);
126 cifs_get_credits_field(struct TCP_Server_Info
*server
, const int optype
)
128 return &server
->credits
;
132 cifs_get_credits(struct mid_q_entry
*mid
)
138 * Find a free multiplex id (SMB mid). Otherwise there could be
139 * mid collisions which might cause problems, demultiplexing the
140 * wrong response to this request. Multiplex ids could collide if
141 * one of a series requests takes much longer than the others, or
142 * if a very large number of long lived requests (byte range
143 * locks or FindNotify requests) are pending. No more than
144 * 64K-1 requests can be outstanding at one time. If no
145 * mids are available, return zero. A future optimization
146 * could make the combination of mids and uid the key we use
147 * to demultiplex on (rather than mid alone).
148 * In addition to the above check, the cifs demultiplex
149 * code already used the command code as a secondary
150 * check of the frame and if signing is negotiated the
151 * response would be discarded if the mid were the same
152 * but the signature was wrong. Since the mid is not put in the
153 * pending queue until later (when it is about to be dispatched)
154 * we do have to limit the number of outstanding requests
155 * to somewhat less than 64K-1 although it is hard to imagine
156 * so many threads being in the vfs at one time.
159 cifs_get_next_mid(struct TCP_Server_Info
*server
)
162 __u16 last_mid
, cur_mid
;
165 spin_lock(&GlobalMid_Lock
);
167 /* mid is 16 bit only for CIFS/SMB */
168 cur_mid
= (__u16
)((server
->CurrentMid
) & 0xffff);
169 /* we do not want to loop forever */
174 * This nested loop looks more expensive than it is.
175 * In practice the list of pending requests is short,
176 * fewer than 50, and the mids are likely to be unique
177 * on the first pass through the loop unless some request
178 * takes longer than the 64 thousand requests before it
179 * (and it would also have to have been a request that
182 while (cur_mid
!= last_mid
) {
183 struct mid_q_entry
*mid_entry
;
184 unsigned int num_mids
;
191 list_for_each_entry(mid_entry
, &server
->pending_mid_q
, qhead
) {
193 if (mid_entry
->mid
== cur_mid
&&
194 mid_entry
->mid_state
== MID_REQUEST_SUBMITTED
) {
195 /* This mid is in use, try a different one */
202 * if we have more than 32k mids in the list, then something
203 * is very wrong. Possibly a local user is trying to DoS the
204 * box by issuing long-running calls and SIGKILL'ing them. If
205 * we get to 2^16 mids then we're in big trouble as this
206 * function could loop forever.
208 * Go ahead and assign out the mid in this situation, but force
209 * an eventual reconnect to clean out the pending_mid_q.
211 if (num_mids
> 32768)
212 server
->tcpStatus
= CifsNeedReconnect
;
215 mid
= (__u64
)cur_mid
;
216 server
->CurrentMid
= mid
;
221 spin_unlock(&GlobalMid_Lock
);
227 0 not a transact2, or all data present
228 >0 transact2 with that much data missing
229 -EINVAL invalid transact2
232 check2ndT2(char *buf
)
234 struct smb_hdr
*pSMB
= (struct smb_hdr
*)buf
;
235 struct smb_t2_rsp
*pSMBt
;
237 __u16 total_data_size
, data_in_this_rsp
;
239 if (pSMB
->Command
!= SMB_COM_TRANSACTION2
)
242 /* check for plausible wct, bcc and t2 data and parm sizes */
243 /* check for parm and data offset going beyond end of smb */
244 if (pSMB
->WordCount
!= 10) { /* coalesce_t2 depends on this */
245 cFYI(1, "invalid transact2 word count");
249 pSMBt
= (struct smb_t2_rsp
*)pSMB
;
251 total_data_size
= get_unaligned_le16(&pSMBt
->t2_rsp
.TotalDataCount
);
252 data_in_this_rsp
= get_unaligned_le16(&pSMBt
->t2_rsp
.DataCount
);
254 if (total_data_size
== data_in_this_rsp
)
256 else if (total_data_size
< data_in_this_rsp
) {
257 cFYI(1, "total data %d smaller than data in frame %d",
258 total_data_size
, data_in_this_rsp
);
262 remaining
= total_data_size
- data_in_this_rsp
;
264 cFYI(1, "missing %d bytes from transact2, check next response",
266 if (total_data_size
> CIFSMaxBufSize
) {
267 cERROR(1, "TotalDataSize %d is over maximum buffer %d",
268 total_data_size
, CIFSMaxBufSize
);
275 coalesce_t2(char *second_buf
, struct smb_hdr
*target_hdr
)
277 struct smb_t2_rsp
*pSMBs
= (struct smb_t2_rsp
*)second_buf
;
278 struct smb_t2_rsp
*pSMBt
= (struct smb_t2_rsp
*)target_hdr
;
279 char *data_area_of_tgt
;
280 char *data_area_of_src
;
282 unsigned int byte_count
, total_in_tgt
;
283 __u16 tgt_total_cnt
, src_total_cnt
, total_in_src
;
285 src_total_cnt
= get_unaligned_le16(&pSMBs
->t2_rsp
.TotalDataCount
);
286 tgt_total_cnt
= get_unaligned_le16(&pSMBt
->t2_rsp
.TotalDataCount
);
288 if (tgt_total_cnt
!= src_total_cnt
)
289 cFYI(1, "total data count of primary and secondary t2 differ "
290 "source=%hu target=%hu", src_total_cnt
, tgt_total_cnt
);
292 total_in_tgt
= get_unaligned_le16(&pSMBt
->t2_rsp
.DataCount
);
294 remaining
= tgt_total_cnt
- total_in_tgt
;
297 cFYI(1, "Server sent too much data. tgt_total_cnt=%hu "
298 "total_in_tgt=%hu", tgt_total_cnt
, total_in_tgt
);
302 if (remaining
== 0) {
303 /* nothing to do, ignore */
304 cFYI(1, "no more data remains");
308 total_in_src
= get_unaligned_le16(&pSMBs
->t2_rsp
.DataCount
);
309 if (remaining
< total_in_src
)
310 cFYI(1, "transact2 2nd response contains too much data");
312 /* find end of first SMB data area */
313 data_area_of_tgt
= (char *)&pSMBt
->hdr
.Protocol
+
314 get_unaligned_le16(&pSMBt
->t2_rsp
.DataOffset
);
316 /* validate target area */
317 data_area_of_src
= (char *)&pSMBs
->hdr
.Protocol
+
318 get_unaligned_le16(&pSMBs
->t2_rsp
.DataOffset
);
320 data_area_of_tgt
+= total_in_tgt
;
322 total_in_tgt
+= total_in_src
;
323 /* is the result too big for the field? */
324 if (total_in_tgt
> USHRT_MAX
) {
325 cFYI(1, "coalesced DataCount too large (%u)", total_in_tgt
);
328 put_unaligned_le16(total_in_tgt
, &pSMBt
->t2_rsp
.DataCount
);
331 byte_count
= get_bcc(target_hdr
);
332 byte_count
+= total_in_src
;
333 /* is the result too big for the field? */
334 if (byte_count
> USHRT_MAX
) {
335 cFYI(1, "coalesced BCC too large (%u)", byte_count
);
338 put_bcc(byte_count
, target_hdr
);
340 byte_count
= be32_to_cpu(target_hdr
->smb_buf_length
);
341 byte_count
+= total_in_src
;
342 /* don't allow buffer to overflow */
343 if (byte_count
> CIFSMaxBufSize
+ MAX_CIFS_HDR_SIZE
- 4) {
344 cFYI(1, "coalesced BCC exceeds buffer size (%u)", byte_count
);
347 target_hdr
->smb_buf_length
= cpu_to_be32(byte_count
);
349 /* copy second buffer into end of first buffer */
350 memcpy(data_area_of_tgt
, data_area_of_src
, total_in_src
);
352 if (remaining
!= total_in_src
) {
353 /* more responses to go */
354 cFYI(1, "waiting for more secondary responses");
359 cFYI(1, "found the last secondary response");
364 cifs_check_trans2(struct mid_q_entry
*mid
, struct TCP_Server_Info
*server
,
365 char *buf
, int malformed
)
369 if (check2ndT2(buf
) <= 0)
371 mid
->multiRsp
= true;
373 /* merge response - fix up 1st*/
374 malformed
= coalesce_t2(buf
, mid
->resp_buf
);
377 /* All parts received or packet is malformed. */
378 mid
->multiEnd
= true;
379 dequeue_mid(mid
, malformed
);
382 if (!server
->large_buf
) {
383 /*FIXME: switch to already allocated largebuf?*/
384 cERROR(1, "1st trans2 resp needs bigbuf");
386 /* Have first buffer */
388 mid
->large_buf
= true;
389 server
->bigbuf
= NULL
;
395 cifs_need_neg(struct TCP_Server_Info
*server
)
397 return server
->maxBuf
== 0;
401 cifs_negotiate(const unsigned int xid
, struct cifs_ses
*ses
)
404 rc
= CIFSSMBNegotiate(xid
, ses
);
406 /* retry only once on 1st time connection */
407 set_credits(ses
->server
, 1);
408 rc
= CIFSSMBNegotiate(xid
, ses
);
416 cifs_negotiate_wsize(struct cifs_tcon
*tcon
, struct smb_vol
*volume_info
)
418 __u64 unix_cap
= le64_to_cpu(tcon
->fsUnixInfo
.Capability
);
419 struct TCP_Server_Info
*server
= tcon
->ses
->server
;
422 /* start with specified wsize, or default */
423 if (volume_info
->wsize
)
424 wsize
= volume_info
->wsize
;
425 else if (tcon
->unix_ext
&& (unix_cap
& CIFS_UNIX_LARGE_WRITE_CAP
))
426 wsize
= CIFS_DEFAULT_IOSIZE
;
428 wsize
= CIFS_DEFAULT_NON_POSIX_WSIZE
;
430 /* can server support 24-bit write sizes? (via UNIX extensions) */
431 if (!tcon
->unix_ext
|| !(unix_cap
& CIFS_UNIX_LARGE_WRITE_CAP
))
432 wsize
= min_t(unsigned int, wsize
, CIFS_MAX_RFC1002_WSIZE
);
435 * no CAP_LARGE_WRITE_X or is signing enabled without CAP_UNIX set?
436 * Limit it to max buffer offered by the server, minus the size of the
437 * WRITEX header, not including the 4 byte RFC1001 length.
439 if (!(server
->capabilities
& CAP_LARGE_WRITE_X
) ||
440 (!(server
->capabilities
& CAP_UNIX
) &&
441 (server
->sec_mode
& (SECMODE_SIGN_ENABLED
|SECMODE_SIGN_REQUIRED
))))
442 wsize
= min_t(unsigned int, wsize
,
443 server
->maxBuf
- sizeof(WRITE_REQ
) + 4);
445 /* hard limit of CIFS_MAX_WSIZE */
446 wsize
= min_t(unsigned int, wsize
, CIFS_MAX_WSIZE
);
452 cifs_negotiate_rsize(struct cifs_tcon
*tcon
, struct smb_vol
*volume_info
)
454 __u64 unix_cap
= le64_to_cpu(tcon
->fsUnixInfo
.Capability
);
455 struct TCP_Server_Info
*server
= tcon
->ses
->server
;
456 unsigned int rsize
, defsize
;
459 * Set default value...
461 * HACK alert! Ancient servers have very small buffers. Even though
462 * MS-CIFS indicates that servers are only limited by the client's
463 * bufsize for reads, testing against win98se shows that it throws
464 * INVALID_PARAMETER errors if you try to request too large a read.
465 * OS/2 just sends back short reads.
467 * If the server doesn't advertise CAP_LARGE_READ_X, then assume that
468 * it can't handle a read request larger than its MaxBufferSize either.
470 if (tcon
->unix_ext
&& (unix_cap
& CIFS_UNIX_LARGE_READ_CAP
))
471 defsize
= CIFS_DEFAULT_IOSIZE
;
472 else if (server
->capabilities
& CAP_LARGE_READ_X
)
473 defsize
= CIFS_DEFAULT_NON_POSIX_RSIZE
;
475 defsize
= server
->maxBuf
- sizeof(READ_RSP
);
477 rsize
= volume_info
->rsize
? volume_info
->rsize
: defsize
;
480 * no CAP_LARGE_READ_X? Then MS-CIFS states that we must limit this to
481 * the client's MaxBufferSize.
483 if (!(server
->capabilities
& CAP_LARGE_READ_X
))
484 rsize
= min_t(unsigned int, CIFSMaxBufSize
, rsize
);
486 /* hard limit of CIFS_MAX_RSIZE */
487 rsize
= min_t(unsigned int, rsize
, CIFS_MAX_RSIZE
);
493 cifs_qfs_tcon(const unsigned int xid
, struct cifs_tcon
*tcon
)
495 CIFSSMBQFSDeviceInfo(xid
, tcon
);
496 CIFSSMBQFSAttributeInfo(xid
, tcon
);
500 cifs_is_path_accessible(const unsigned int xid
, struct cifs_tcon
*tcon
,
501 struct cifs_sb_info
*cifs_sb
, const char *full_path
)
504 FILE_ALL_INFO
*file_info
;
506 file_info
= kmalloc(sizeof(FILE_ALL_INFO
), GFP_KERNEL
);
507 if (file_info
== NULL
)
510 rc
= CIFSSMBQPathInfo(xid
, tcon
, full_path
, file_info
,
511 0 /* not legacy */, cifs_sb
->local_nls
,
512 cifs_sb
->mnt_cifs_flags
&
513 CIFS_MOUNT_MAP_SPECIAL_CHR
);
515 if (rc
== -EOPNOTSUPP
|| rc
== -EINVAL
)
516 rc
= SMBQueryInformation(xid
, tcon
, full_path
, file_info
,
517 cifs_sb
->local_nls
, cifs_sb
->mnt_cifs_flags
&
518 CIFS_MOUNT_MAP_SPECIAL_CHR
);
524 cifs_query_path_info(const unsigned int xid
, struct cifs_tcon
*tcon
,
525 struct cifs_sb_info
*cifs_sb
, const char *full_path
,
526 FILE_ALL_INFO
*data
, bool *adjustTZ
)
530 /* could do find first instead but this returns more info */
531 rc
= CIFSSMBQPathInfo(xid
, tcon
, full_path
, data
, 0 /* not legacy */,
532 cifs_sb
->local_nls
, cifs_sb
->mnt_cifs_flags
&
533 CIFS_MOUNT_MAP_SPECIAL_CHR
);
535 * BB optimize code so we do not make the above call when server claims
536 * no NT SMB support and the above call failed at least once - set flag
539 if ((rc
== -EOPNOTSUPP
) || (rc
== -EINVAL
)) {
540 rc
= SMBQueryInformation(xid
, tcon
, full_path
, data
,
542 cifs_sb
->mnt_cifs_flags
&
543 CIFS_MOUNT_MAP_SPECIAL_CHR
);
550 cifs_get_srv_inum(const unsigned int xid
, struct cifs_tcon
*tcon
,
551 struct cifs_sb_info
*cifs_sb
, const char *full_path
,
552 u64
*uniqueid
, FILE_ALL_INFO
*data
)
555 * We can not use the IndexNumber field by default from Windows or
556 * Samba (in ALL_INFO buf) but we can request it explicitly. The SNIA
557 * CIFS spec claims that this value is unique within the scope of a
558 * share, and the windows docs hint that it's actually unique
561 * There may be higher info levels that work but are there Windows
562 * server or network appliances for which IndexNumber field is not
565 return CIFSGetSrvInodeNumber(xid
, tcon
, full_path
, uniqueid
,
567 cifs_sb
->mnt_cifs_flags
&
568 CIFS_MOUNT_MAP_SPECIAL_CHR
);
572 cifs_query_file_info(const unsigned int xid
, struct cifs_tcon
*tcon
,
573 struct cifs_fid
*fid
, FILE_ALL_INFO
*data
)
575 return CIFSSMBQFileInfo(xid
, tcon
, fid
->netfid
, data
);
579 cifs_clear_stats(struct cifs_tcon
*tcon
)
581 #ifdef CONFIG_CIFS_STATS
582 atomic_set(&tcon
->stats
.cifs_stats
.num_writes
, 0);
583 atomic_set(&tcon
->stats
.cifs_stats
.num_reads
, 0);
584 atomic_set(&tcon
->stats
.cifs_stats
.num_flushes
, 0);
585 atomic_set(&tcon
->stats
.cifs_stats
.num_oplock_brks
, 0);
586 atomic_set(&tcon
->stats
.cifs_stats
.num_opens
, 0);
587 atomic_set(&tcon
->stats
.cifs_stats
.num_posixopens
, 0);
588 atomic_set(&tcon
->stats
.cifs_stats
.num_posixmkdirs
, 0);
589 atomic_set(&tcon
->stats
.cifs_stats
.num_closes
, 0);
590 atomic_set(&tcon
->stats
.cifs_stats
.num_deletes
, 0);
591 atomic_set(&tcon
->stats
.cifs_stats
.num_mkdirs
, 0);
592 atomic_set(&tcon
->stats
.cifs_stats
.num_rmdirs
, 0);
593 atomic_set(&tcon
->stats
.cifs_stats
.num_renames
, 0);
594 atomic_set(&tcon
->stats
.cifs_stats
.num_t2renames
, 0);
595 atomic_set(&tcon
->stats
.cifs_stats
.num_ffirst
, 0);
596 atomic_set(&tcon
->stats
.cifs_stats
.num_fnext
, 0);
597 atomic_set(&tcon
->stats
.cifs_stats
.num_fclose
, 0);
598 atomic_set(&tcon
->stats
.cifs_stats
.num_hardlinks
, 0);
599 atomic_set(&tcon
->stats
.cifs_stats
.num_symlinks
, 0);
600 atomic_set(&tcon
->stats
.cifs_stats
.num_locks
, 0);
601 atomic_set(&tcon
->stats
.cifs_stats
.num_acl_get
, 0);
602 atomic_set(&tcon
->stats
.cifs_stats
.num_acl_set
, 0);
607 cifs_print_stats(struct seq_file
*m
, struct cifs_tcon
*tcon
)
609 #ifdef CONFIG_CIFS_STATS
610 seq_printf(m
, " Oplocks breaks: %d",
611 atomic_read(&tcon
->stats
.cifs_stats
.num_oplock_brks
));
612 seq_printf(m
, "\nReads: %d Bytes: %llu",
613 atomic_read(&tcon
->stats
.cifs_stats
.num_reads
),
614 (long long)(tcon
->bytes_read
));
615 seq_printf(m
, "\nWrites: %d Bytes: %llu",
616 atomic_read(&tcon
->stats
.cifs_stats
.num_writes
),
617 (long long)(tcon
->bytes_written
));
618 seq_printf(m
, "\nFlushes: %d",
619 atomic_read(&tcon
->stats
.cifs_stats
.num_flushes
));
620 seq_printf(m
, "\nLocks: %d HardLinks: %d Symlinks: %d",
621 atomic_read(&tcon
->stats
.cifs_stats
.num_locks
),
622 atomic_read(&tcon
->stats
.cifs_stats
.num_hardlinks
),
623 atomic_read(&tcon
->stats
.cifs_stats
.num_symlinks
));
624 seq_printf(m
, "\nOpens: %d Closes: %d Deletes: %d",
625 atomic_read(&tcon
->stats
.cifs_stats
.num_opens
),
626 atomic_read(&tcon
->stats
.cifs_stats
.num_closes
),
627 atomic_read(&tcon
->stats
.cifs_stats
.num_deletes
));
628 seq_printf(m
, "\nPosix Opens: %d Posix Mkdirs: %d",
629 atomic_read(&tcon
->stats
.cifs_stats
.num_posixopens
),
630 atomic_read(&tcon
->stats
.cifs_stats
.num_posixmkdirs
));
631 seq_printf(m
, "\nMkdirs: %d Rmdirs: %d",
632 atomic_read(&tcon
->stats
.cifs_stats
.num_mkdirs
),
633 atomic_read(&tcon
->stats
.cifs_stats
.num_rmdirs
));
634 seq_printf(m
, "\nRenames: %d T2 Renames %d",
635 atomic_read(&tcon
->stats
.cifs_stats
.num_renames
),
636 atomic_read(&tcon
->stats
.cifs_stats
.num_t2renames
));
637 seq_printf(m
, "\nFindFirst: %d FNext %d FClose %d",
638 atomic_read(&tcon
->stats
.cifs_stats
.num_ffirst
),
639 atomic_read(&tcon
->stats
.cifs_stats
.num_fnext
),
640 atomic_read(&tcon
->stats
.cifs_stats
.num_fclose
));
645 cifs_mkdir_setinfo(struct inode
*inode
, const char *full_path
,
646 struct cifs_sb_info
*cifs_sb
, struct cifs_tcon
*tcon
,
647 const unsigned int xid
)
649 FILE_BASIC_INFO info
;
650 struct cifsInodeInfo
*cifsInode
;
654 memset(&info
, 0, sizeof(info
));
655 cifsInode
= CIFS_I(inode
);
656 dosattrs
= cifsInode
->cifsAttrs
|ATTR_READONLY
;
657 info
.Attributes
= cpu_to_le32(dosattrs
);
658 rc
= CIFSSMBSetPathInfo(xid
, tcon
, full_path
, &info
, cifs_sb
->local_nls
,
659 cifs_sb
->mnt_cifs_flags
&
660 CIFS_MOUNT_MAP_SPECIAL_CHR
);
662 cifsInode
->cifsAttrs
= dosattrs
;
666 cifs_open_file(const unsigned int xid
, struct cifs_tcon
*tcon
, const char *path
,
667 int disposition
, int desired_access
, int create_options
,
668 struct cifs_fid
*fid
, __u32
*oplock
, FILE_ALL_INFO
*buf
,
669 struct cifs_sb_info
*cifs_sb
)
671 if (!(tcon
->ses
->capabilities
& CAP_NT_SMBS
))
672 return SMBLegacyOpen(xid
, tcon
, path
, disposition
,
673 desired_access
, create_options
,
674 &fid
->netfid
, oplock
, buf
,
675 cifs_sb
->local_nls
, cifs_sb
->mnt_cifs_flags
676 & CIFS_MOUNT_MAP_SPECIAL_CHR
);
677 return CIFSSMBOpen(xid
, tcon
, path
, disposition
, desired_access
,
678 create_options
, &fid
->netfid
, oplock
, buf
,
679 cifs_sb
->local_nls
, cifs_sb
->mnt_cifs_flags
&
680 CIFS_MOUNT_MAP_SPECIAL_CHR
);
684 cifs_set_fid(struct cifsFileInfo
*cfile
, struct cifs_fid
*fid
, __u32 oplock
)
686 struct cifsInodeInfo
*cinode
= CIFS_I(cfile
->dentry
->d_inode
);
687 cfile
->fid
.netfid
= fid
->netfid
;
688 cifs_set_oplock_level(cinode
, oplock
);
689 cinode
->can_cache_brlcks
= cinode
->clientCanCacheAll
;
693 cifs_close_file(const unsigned int xid
, struct cifs_tcon
*tcon
,
694 struct cifs_fid
*fid
)
696 CIFSSMBClose(xid
, tcon
, fid
->netfid
);
700 cifs_flush_file(const unsigned int xid
, struct cifs_tcon
*tcon
,
701 struct cifs_fid
*fid
)
703 return CIFSSMBFlush(xid
, tcon
, fid
->netfid
);
707 cifs_sync_read(const unsigned int xid
, struct cifsFileInfo
*cfile
,
708 struct cifs_io_parms
*parms
, unsigned int *bytes_read
,
709 char **buf
, int *buf_type
)
711 parms
->netfid
= cfile
->fid
.netfid
;
712 return CIFSSMBRead(xid
, parms
, bytes_read
, buf
, buf_type
);
716 cifs_sync_write(const unsigned int xid
, struct cifsFileInfo
*cfile
,
717 struct cifs_io_parms
*parms
, unsigned int *written
,
718 struct kvec
*iov
, unsigned long nr_segs
)
721 parms
->netfid
= cfile
->fid
.netfid
;
722 return CIFSSMBWrite2(xid
, parms
, written
, iov
, nr_segs
);
726 smb_set_file_info(struct inode
*inode
, const char *full_path
,
727 FILE_BASIC_INFO
*buf
, const unsigned int xid
)
733 struct cifsFileInfo
*open_file
;
734 struct cifsInodeInfo
*cinode
= CIFS_I(inode
);
735 struct cifs_sb_info
*cifs_sb
= CIFS_SB(inode
->i_sb
);
736 struct tcon_link
*tlink
= NULL
;
737 struct cifs_tcon
*tcon
;
739 /* if the file is already open for write, just use that fileid */
740 open_file
= find_writable_file(cinode
, true);
742 netfid
= open_file
->fid
.netfid
;
743 netpid
= open_file
->pid
;
744 tcon
= tlink_tcon(open_file
->tlink
);
745 goto set_via_filehandle
;
748 tlink
= cifs_sb_tlink(cifs_sb
);
754 tcon
= tlink_tcon(tlink
);
757 * NT4 apparently returns success on this call, but it doesn't really
760 if (!(tcon
->ses
->flags
& CIFS_SES_NT4
)) {
761 rc
= CIFSSMBSetPathInfo(xid
, tcon
, full_path
, buf
,
763 cifs_sb
->mnt_cifs_flags
&
764 CIFS_MOUNT_MAP_SPECIAL_CHR
);
766 cinode
->cifsAttrs
= le32_to_cpu(buf
->Attributes
);
768 } else if (rc
!= -EOPNOTSUPP
&& rc
!= -EINVAL
)
772 cFYI(1, "calling SetFileInfo since SetPathInfo for times not supported "
774 rc
= CIFSSMBOpen(xid
, tcon
, full_path
, FILE_OPEN
,
775 SYNCHRONIZE
| FILE_WRITE_ATTRIBUTES
, CREATE_NOT_DIR
,
776 &netfid
, &oplock
, NULL
, cifs_sb
->local_nls
,
777 cifs_sb
->mnt_cifs_flags
& CIFS_MOUNT_MAP_SPECIAL_CHR
);
785 netpid
= current
->tgid
;
788 rc
= CIFSSMBSetFileInfo(xid
, tcon
, buf
, netfid
, netpid
);
790 cinode
->cifsAttrs
= le32_to_cpu(buf
->Attributes
);
792 if (open_file
== NULL
)
793 CIFSSMBClose(xid
, tcon
, netfid
);
795 cifsFileInfo_put(open_file
);
798 cifs_put_tlink(tlink
);
803 cifs_query_dir_first(const unsigned int xid
, struct cifs_tcon
*tcon
,
804 const char *path
, struct cifs_sb_info
*cifs_sb
,
805 struct cifs_fid
*fid
, __u16 search_flags
,
806 struct cifs_search_info
*srch_inf
)
808 return CIFSFindFirst(xid
, tcon
, path
, cifs_sb
,
809 &fid
->netfid
, search_flags
, srch_inf
, true);
813 cifs_query_dir_next(const unsigned int xid
, struct cifs_tcon
*tcon
,
814 struct cifs_fid
*fid
, __u16 search_flags
,
815 struct cifs_search_info
*srch_inf
)
817 return CIFSFindNext(xid
, tcon
, fid
->netfid
, search_flags
, srch_inf
);
821 cifs_close_dir(const unsigned int xid
, struct cifs_tcon
*tcon
,
822 struct cifs_fid
*fid
)
824 return CIFSFindClose(xid
, tcon
, fid
->netfid
);
828 cifs_oplock_response(struct cifs_tcon
*tcon
, struct cifs_fid
*fid
,
829 struct cifsInodeInfo
*cinode
)
831 return CIFSSMBLock(0, tcon
, fid
->netfid
, current
->tgid
, 0, 0, 0, 0,
832 LOCKING_ANDX_OPLOCK_RELEASE
, false,
833 cinode
->clientCanCacheRead
? 1 : 0);
837 cifs_queryfs(const unsigned int xid
, struct cifs_tcon
*tcon
,
840 int rc
= -EOPNOTSUPP
;
842 buf
->f_type
= CIFS_MAGIC_NUMBER
;
845 * We could add a second check for a QFS Unix capability bit
847 if ((tcon
->ses
->capabilities
& CAP_UNIX
) &&
848 (CIFS_POSIX_EXTENSIONS
& le64_to_cpu(tcon
->fsUnixInfo
.Capability
)))
849 rc
= CIFSSMBQFSPosixInfo(xid
, tcon
, buf
);
852 * Only need to call the old QFSInfo if failed on newer one,
855 if (rc
&& (tcon
->ses
->capabilities
& CAP_NT_SMBS
))
856 rc
= CIFSSMBQFSInfo(xid
, tcon
, buf
);
859 * Some old Windows servers also do not support level 103, retry with
860 * older level one if old server failed the previous call or we
861 * bypassed it because we detected that this was an older LANMAN sess
864 rc
= SMBOldQFSInfo(xid
, tcon
, buf
);
869 cifs_mand_lock(const unsigned int xid
, struct cifsFileInfo
*cfile
, __u64 offset
,
870 __u64 length
, __u32 type
, int lock
, int unlock
, bool wait
)
872 return CIFSSMBLock(xid
, tlink_tcon(cfile
->tlink
), cfile
->fid
.netfid
,
873 current
->tgid
, length
, offset
, unlock
, lock
,
874 (__u8
)type
, wait
, 0);
877 struct smb_version_operations smb1_operations
= {
878 .send_cancel
= send_nt_cancel
,
879 .compare_fids
= cifs_compare_fids
,
880 .setup_request
= cifs_setup_request
,
881 .setup_async_request
= cifs_setup_async_request
,
882 .check_receive
= cifs_check_receive
,
883 .add_credits
= cifs_add_credits
,
884 .set_credits
= cifs_set_credits
,
885 .get_credits_field
= cifs_get_credits_field
,
886 .get_credits
= cifs_get_credits
,
887 .get_next_mid
= cifs_get_next_mid
,
888 .read_data_offset
= cifs_read_data_offset
,
889 .read_data_length
= cifs_read_data_length
,
890 .map_error
= map_smb_to_linux_error
,
891 .find_mid
= cifs_find_mid
,
892 .check_message
= checkSMB
,
893 .dump_detail
= cifs_dump_detail
,
894 .clear_stats
= cifs_clear_stats
,
895 .print_stats
= cifs_print_stats
,
896 .is_oplock_break
= is_valid_oplock_break
,
897 .check_trans2
= cifs_check_trans2
,
898 .need_neg
= cifs_need_neg
,
899 .negotiate
= cifs_negotiate
,
900 .negotiate_wsize
= cifs_negotiate_wsize
,
901 .negotiate_rsize
= cifs_negotiate_rsize
,
902 .sess_setup
= CIFS_SessSetup
,
903 .logoff
= CIFSSMBLogoff
,
904 .tree_connect
= CIFSTCon
,
905 .tree_disconnect
= CIFSSMBTDis
,
906 .get_dfs_refer
= CIFSGetDFSRefer
,
907 .qfs_tcon
= cifs_qfs_tcon
,
908 .is_path_accessible
= cifs_is_path_accessible
,
909 .query_path_info
= cifs_query_path_info
,
910 .query_file_info
= cifs_query_file_info
,
911 .get_srv_inum
= cifs_get_srv_inum
,
912 .set_path_size
= CIFSSMBSetEOF
,
913 .set_file_size
= CIFSSMBSetFileSize
,
914 .set_file_info
= smb_set_file_info
,
916 .mkdir
= CIFSSMBMkDir
,
917 .mkdir_setinfo
= cifs_mkdir_setinfo
,
918 .rmdir
= CIFSSMBRmDir
,
919 .unlink
= CIFSSMBDelFile
,
920 .rename_pending_delete
= cifs_rename_pending_delete
,
921 .rename
= CIFSSMBRename
,
922 .create_hardlink
= CIFSCreateHardLink
,
923 .open
= cifs_open_file
,
924 .set_fid
= cifs_set_fid
,
925 .close
= cifs_close_file
,
926 .flush
= cifs_flush_file
,
927 .async_readv
= cifs_async_readv
,
928 .async_writev
= cifs_async_writev
,
929 .sync_read
= cifs_sync_read
,
930 .sync_write
= cifs_sync_write
,
931 .query_dir_first
= cifs_query_dir_first
,
932 .query_dir_next
= cifs_query_dir_next
,
933 .close_dir
= cifs_close_dir
,
934 .calc_smb_size
= smbCalcSize
,
935 .oplock_response
= cifs_oplock_response
,
936 .queryfs
= cifs_queryfs
,
937 .mand_lock
= cifs_mand_lock
,
938 .mand_unlock_range
= cifs_unlock_range
,
939 .push_mand_locks
= cifs_push_mandatory_locks
,
942 struct smb_version_values smb1_values
= {
943 .version_string
= SMB1_VERSION_STRING
,
944 .large_lock_type
= LOCKING_ANDX_LARGE_FILES
,
945 .exclusive_lock_type
= 0,
946 .shared_lock_type
= LOCKING_ANDX_SHARED_LOCK
,
947 .unlock_lock_type
= 0,
948 .header_size
= sizeof(struct smb_hdr
),
949 .max_header_size
= MAX_CIFS_HDR_SIZE
,
950 .read_rsp_size
= sizeof(READ_RSP
),
951 .lock_cmd
= cpu_to_le16(SMB_COM_LOCKING_ANDX
),
952 .cap_unix
= CAP_UNIX
,
953 .cap_nt_find
= CAP_NT_SMBS
| CAP_NT_FIND
,
954 .cap_large_files
= CAP_LARGE_FILES
,