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_build_path_to_root(struct smb_vol *vol, struct cifs_sb_info *cifs_sb,
580 struct cifs_tcon *tcon)
582 int pplen = vol->prepath ? strlen(vol->prepath) : 0;
584 char *full_path = NULL;
586 /* if no prefix path, simply set path to the root of share to "" */
588 full_path = kzalloc(1, GFP_KERNEL);
592 if (tcon->Flags & SMB_SHARE_IS_IN_DFS)
593 dfsplen = strnlen(tcon->treeName, MAX_TREE_SIZE + 1);
597 full_path = kmalloc(dfsplen + pplen + 1, GFP_KERNEL);
598 if (full_path == NULL)
602 strncpy(full_path, tcon->treeName, dfsplen);
603 strncpy(full_path + dfsplen, vol->prepath, pplen);
604 convert_delimiter(full_path, CIFS_DIR_SEP(cifs_sb));
605 full_path[dfsplen + pplen] = 0; /* add trailing null */
610 cifs_clear_stats(struct cifs_tcon *tcon)
612 #ifdef CONFIG_CIFS_STATS
613 atomic_set(&tcon->stats.cifs_stats.num_writes, 0);
614 atomic_set(&tcon->stats.cifs_stats.num_reads, 0);
615 atomic_set(&tcon->stats.cifs_stats.num_flushes, 0);
616 atomic_set(&tcon->stats.cifs_stats.num_oplock_brks, 0);
617 atomic_set(&tcon->stats.cifs_stats.num_opens, 0);
618 atomic_set(&tcon->stats.cifs_stats.num_posixopens, 0);
619 atomic_set(&tcon->stats.cifs_stats.num_posixmkdirs, 0);
620 atomic_set(&tcon->stats.cifs_stats.num_closes, 0);
621 atomic_set(&tcon->stats.cifs_stats.num_deletes, 0);
622 atomic_set(&tcon->stats.cifs_stats.num_mkdirs, 0);
623 atomic_set(&tcon->stats.cifs_stats.num_rmdirs, 0);
624 atomic_set(&tcon->stats.cifs_stats.num_renames, 0);
625 atomic_set(&tcon->stats.cifs_stats.num_t2renames, 0);
626 atomic_set(&tcon->stats.cifs_stats.num_ffirst, 0);
627 atomic_set(&tcon->stats.cifs_stats.num_fnext, 0);
628 atomic_set(&tcon->stats.cifs_stats.num_fclose, 0);
629 atomic_set(&tcon->stats.cifs_stats.num_hardlinks, 0);
630 atomic_set(&tcon->stats.cifs_stats.num_symlinks, 0);
631 atomic_set(&tcon->stats.cifs_stats.num_locks, 0);
632 atomic_set(&tcon->stats.cifs_stats.num_acl_get, 0);
633 atomic_set(&tcon->stats.cifs_stats.num_acl_set, 0);
638 cifs_print_stats(struct seq_file *m, struct cifs_tcon *tcon)
640 #ifdef CONFIG_CIFS_STATS
641 seq_printf(m, " Oplocks breaks: %d",
642 atomic_read(&tcon->stats.cifs_stats.num_oplock_brks));
643 seq_printf(m, "\nReads: %d Bytes: %llu",
644 atomic_read(&tcon->stats.cifs_stats.num_reads),
645 (long long)(tcon->bytes_read));
646 seq_printf(m, "\nWrites: %d Bytes: %llu",
647 atomic_read(&tcon->stats.cifs_stats.num_writes),
648 (long long)(tcon->bytes_written));
649 seq_printf(m, "\nFlushes: %d",
650 atomic_read(&tcon->stats.cifs_stats.num_flushes));
651 seq_printf(m, "\nLocks: %d HardLinks: %d Symlinks: %d",
652 atomic_read(&tcon->stats.cifs_stats.num_locks),
653 atomic_read(&tcon->stats.cifs_stats.num_hardlinks),
654 atomic_read(&tcon->stats.cifs_stats.num_symlinks));
655 seq_printf(m, "\nOpens: %d Closes: %d Deletes: %d",
656 atomic_read(&tcon->stats.cifs_stats.num_opens),
657 atomic_read(&tcon->stats.cifs_stats.num_closes),
658 atomic_read(&tcon->stats.cifs_stats.num_deletes));
659 seq_printf(m, "\nPosix Opens: %d Posix Mkdirs: %d",
660 atomic_read(&tcon->stats.cifs_stats.num_posixopens),
661 atomic_read(&tcon->stats.cifs_stats.num_posixmkdirs));
662 seq_printf(m, "\nMkdirs: %d Rmdirs: %d",
663 atomic_read(&tcon->stats.cifs_stats.num_mkdirs),
664 atomic_read(&tcon->stats.cifs_stats.num_rmdirs));
665 seq_printf(m, "\nRenames: %d T2 Renames %d",
666 atomic_read(&tcon->stats.cifs_stats.num_renames),
667 atomic_read(&tcon->stats.cifs_stats.num_t2renames));
668 seq_printf(m, "\nFindFirst: %d FNext %d FClose %d",
669 atomic_read(&tcon->stats.cifs_stats.num_ffirst),
670 atomic_read(&tcon->stats.cifs_stats.num_fnext),
671 atomic_read(&tcon->stats.cifs_stats.num_fclose));
676 cifs_mkdir_setinfo(struct inode *inode, const char *full_path,
677 struct cifs_sb_info *cifs_sb, struct cifs_tcon *tcon,
678 const unsigned int xid)
680 FILE_BASIC_INFO info;
681 struct cifsInodeInfo *cifsInode;
685 memset(&info, 0, sizeof(info));
686 cifsInode = CIFS_I(inode);
687 dosattrs = cifsInode->cifsAttrs|ATTR_READONLY;
688 info.Attributes = cpu_to_le32(dosattrs);
689 rc = CIFSSMBSetPathInfo(xid, tcon, full_path, &info, cifs_sb->local_nls,
690 cifs_sb->mnt_cifs_flags &
691 CIFS_MOUNT_MAP_SPECIAL_CHR);
693 cifsInode->cifsAttrs = dosattrs;
697 cifs_open_file(const unsigned int xid, struct cifs_tcon *tcon, const char *path,
698 int disposition, int desired_access, int create_options,
699 struct cifs_fid *fid, __u32 *oplock, FILE_ALL_INFO *buf,
700 struct cifs_sb_info *cifs_sb)
702 if (!(tcon->ses->capabilities & CAP_NT_SMBS))
703 return SMBLegacyOpen(xid, tcon, path, disposition,
704 desired_access, create_options,
705 &fid->netfid, oplock, buf,
706 cifs_sb->local_nls, cifs_sb->mnt_cifs_flags
707 & CIFS_MOUNT_MAP_SPECIAL_CHR);
708 return CIFSSMBOpen(xid, tcon, path, disposition, desired_access,
709 create_options, &fid->netfid, oplock, buf,
710 cifs_sb->local_nls, cifs_sb->mnt_cifs_flags &
711 CIFS_MOUNT_MAP_SPECIAL_CHR);
715 cifs_set_fid(struct cifsFileInfo *cfile, struct cifs_fid *fid, __u32 oplock)
717 struct cifsInodeInfo *cinode = CIFS_I(cfile->dentry->d_inode);
718 cfile->fid.netfid = fid->netfid;
719 cifs_set_oplock_level(cinode, oplock);
720 cinode->can_cache_brlcks = cinode->clientCanCacheAll;
724 cifs_close_file(const unsigned int xid, struct cifs_tcon *tcon,
725 struct cifs_fid *fid)
727 CIFSSMBClose(xid, tcon, fid->netfid);
731 cifs_flush_file(const unsigned int xid, struct cifs_tcon *tcon,
732 struct cifs_fid *fid)
734 return CIFSSMBFlush(xid, tcon, fid->netfid);
738 cifs_sync_read(const unsigned int xid, struct cifsFileInfo *cfile,
739 struct cifs_io_parms *parms, unsigned int *bytes_read,
740 char **buf, int *buf_type)
742 parms->netfid = cfile->fid.netfid;
743 return CIFSSMBRead(xid, parms, bytes_read, buf, buf_type);
747 cifs_sync_write(const unsigned int xid, struct cifsFileInfo *cfile,
748 struct cifs_io_parms *parms, unsigned int *written,
749 struct kvec *iov, unsigned long nr_segs)
752 parms->netfid = cfile->fid.netfid;
753 return CIFSSMBWrite2(xid, parms, written, iov, nr_segs);
757 smb_set_file_info(struct inode *inode, const char *full_path,
758 FILE_BASIC_INFO *buf, const unsigned int xid)
764 struct cifsFileInfo *open_file;
765 struct cifsInodeInfo *cinode = CIFS_I(inode);
766 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
767 struct tcon_link *tlink = NULL;
768 struct cifs_tcon *tcon;
769 FILE_BASIC_INFO info_buf;
771 /* if the file is already open for write, just use that fileid */
772 open_file = find_writable_file(cinode, true);
774 netfid = open_file->fid.netfid;
775 netpid = open_file->pid;
776 tcon = tlink_tcon(open_file->tlink);
777 goto set_via_filehandle;
780 tlink = cifs_sb_tlink(cifs_sb);
786 tcon = tlink_tcon(tlink);
789 * NT4 apparently returns success on this call, but it doesn't really
792 if (!(tcon->ses->flags & CIFS_SES_NT4)) {
793 rc = CIFSSMBSetPathInfo(xid, tcon, full_path, buf,
795 cifs_sb->mnt_cifs_flags &
796 CIFS_MOUNT_MAP_SPECIAL_CHR);
798 cinode->cifsAttrs = le32_to_cpu(buf->Attributes);
800 } else if (rc != -EOPNOTSUPP && rc != -EINVAL)
804 cFYI(1, "calling SetFileInfo since SetPathInfo for times not supported "
806 rc = CIFSSMBOpen(xid, tcon, full_path, FILE_OPEN,
807 SYNCHRONIZE | FILE_WRITE_ATTRIBUTES, CREATE_NOT_DIR,
808 &netfid, &oplock, NULL, cifs_sb->local_nls,
809 cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
817 netpid = current->tgid;
820 rc = CIFSSMBSetFileInfo(xid, tcon, &info_buf, netfid, netpid);
822 cinode->cifsAttrs = le32_to_cpu(buf->Attributes);
824 if (open_file == NULL)
825 CIFSSMBClose(xid, tcon, netfid);
827 cifsFileInfo_put(open_file);
830 cifs_put_tlink(tlink);
835 cifs_query_dir_first(const unsigned int xid, struct cifs_tcon *tcon,
836 const char *path, struct cifs_sb_info *cifs_sb,
837 struct cifs_fid *fid, __u16 search_flags,
838 struct cifs_search_info *srch_inf)
840 return CIFSFindFirst(xid, tcon, path, cifs_sb,
841 &fid->netfid, search_flags, srch_inf, true);
845 cifs_query_dir_next(const unsigned int xid, struct cifs_tcon *tcon,
846 struct cifs_fid *fid, __u16 search_flags,
847 struct cifs_search_info *srch_inf)
849 return CIFSFindNext(xid, tcon, fid->netfid, search_flags, srch_inf);
853 cifs_close_dir(const unsigned int xid, struct cifs_tcon *tcon,
854 struct cifs_fid *fid)
856 return CIFSFindClose(xid, tcon, fid->netfid);
860 cifs_oplock_response(struct cifs_tcon *tcon, struct cifs_fid *fid,
861 struct cifsInodeInfo *cinode)
863 return CIFSSMBLock(0, tcon, fid->netfid, current->tgid, 0, 0, 0, 0,
864 LOCKING_ANDX_OPLOCK_RELEASE, false,
865 cinode->clientCanCacheRead ? 1 : 0);
869 cifs_queryfs(const unsigned int xid, struct cifs_tcon *tcon,
872 int rc = -EOPNOTSUPP;
874 buf->f_type = CIFS_MAGIC_NUMBER;
877 * We could add a second check for a QFS Unix capability bit
879 if ((tcon->ses->capabilities & CAP_UNIX) &&
880 (CIFS_POSIX_EXTENSIONS & le64_to_cpu(tcon->fsUnixInfo.Capability)))
881 rc = CIFSSMBQFSPosixInfo(xid, tcon, buf);
884 * Only need to call the old QFSInfo if failed on newer one,
887 if (rc && (tcon->ses->capabilities & CAP_NT_SMBS))
888 rc = CIFSSMBQFSInfo(xid, tcon, buf);
891 * Some old Windows servers also do not support level 103, retry with
892 * older level one if old server failed the previous call or we
893 * bypassed it because we detected that this was an older LANMAN sess
896 rc = SMBOldQFSInfo(xid, tcon, buf);
901 cifs_mand_lock(const unsigned int xid, struct cifsFileInfo *cfile, __u64 offset,
902 __u64 length, __u32 type, int lock, int unlock, bool wait)
904 return CIFSSMBLock(xid, tlink_tcon(cfile->tlink), cfile->fid.netfid,
905 current->tgid, length, offset, unlock, lock,
906 (__u8)type, wait, 0);
909 struct smb_version_operations smb1_operations = {
910 .send_cancel = send_nt_cancel,
911 .compare_fids = cifs_compare_fids,
912 .setup_request = cifs_setup_request,
913 .setup_async_request = cifs_setup_async_request,
914 .check_receive = cifs_check_receive,
915 .add_credits = cifs_add_credits,
916 .set_credits = cifs_set_credits,
917 .get_credits_field = cifs_get_credits_field,
918 .get_credits = cifs_get_credits,
919 .get_next_mid = cifs_get_next_mid,
920 .read_data_offset = cifs_read_data_offset,
921 .read_data_length = cifs_read_data_length,
922 .map_error = map_smb_to_linux_error,
923 .find_mid = cifs_find_mid,
924 .check_message = checkSMB,
925 .dump_detail = cifs_dump_detail,
926 .clear_stats = cifs_clear_stats,
927 .print_stats = cifs_print_stats,
928 .is_oplock_break = is_valid_oplock_break,
929 .check_trans2 = cifs_check_trans2,
930 .need_neg = cifs_need_neg,
931 .negotiate = cifs_negotiate,
932 .negotiate_wsize = cifs_negotiate_wsize,
933 .negotiate_rsize = cifs_negotiate_rsize,
934 .sess_setup = CIFS_SessSetup,
935 .logoff = CIFSSMBLogoff,
936 .tree_connect = CIFSTCon,
937 .tree_disconnect = CIFSSMBTDis,
938 .get_dfs_refer = CIFSGetDFSRefer,
939 .qfs_tcon = cifs_qfs_tcon,
940 .is_path_accessible = cifs_is_path_accessible,
941 .query_path_info = cifs_query_path_info,
942 .query_file_info = cifs_query_file_info,
943 .get_srv_inum = cifs_get_srv_inum,
944 .set_path_size = CIFSSMBSetEOF,
945 .set_file_size = CIFSSMBSetFileSize,
946 .set_file_info = smb_set_file_info,
947 .build_path_to_root = cifs_build_path_to_root,
949 .mkdir = CIFSSMBMkDir,
950 .mkdir_setinfo = cifs_mkdir_setinfo,
951 .rmdir = CIFSSMBRmDir,
952 .unlink = CIFSSMBDelFile,
953 .rename_pending_delete = cifs_rename_pending_delete,
954 .rename = CIFSSMBRename,
955 .create_hardlink = CIFSCreateHardLink,
956 .open = cifs_open_file,
957 .set_fid = cifs_set_fid,
958 .close = cifs_close_file,
959 .flush = cifs_flush_file,
960 .async_readv = cifs_async_readv,
961 .async_writev = cifs_async_writev,
962 .sync_read = cifs_sync_read,
963 .sync_write = cifs_sync_write,
964 .query_dir_first = cifs_query_dir_first,
965 .query_dir_next = cifs_query_dir_next,
966 .close_dir = cifs_close_dir,
967 .calc_smb_size = smbCalcSize,
968 .oplock_response = cifs_oplock_response,
969 .queryfs = cifs_queryfs,
970 .mand_lock = cifs_mand_lock,
971 .mand_unlock_range = cifs_unlock_range,
972 .push_mand_locks = cifs_push_mandatory_locks,
975 struct smb_version_values smb1_values = {
976 .version_string = SMB1_VERSION_STRING,
977 .large_lock_type = LOCKING_ANDX_LARGE_FILES,
978 .exclusive_lock_type = 0,
979 .shared_lock_type = LOCKING_ANDX_SHARED_LOCK,
980 .unlock_lock_type = 0,
981 .header_size = sizeof(struct smb_hdr),
982 .max_header_size = MAX_CIFS_HDR_SIZE,
983 .read_rsp_size = sizeof(READ_RSP),
984 .lock_cmd = cpu_to_le16(SMB_COM_LOCKING_ANDX),
985 .cap_unix = CAP_UNIX,
986 .cap_nt_find = CAP_NT_SMBS | CAP_NT_FIND,
987 .cap_large_files = CAP_LARGE_FILES,