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);
58 * The response to this call was already factored into the sequence
59 * number when the call went out, so we must adjust it back downward
62 --server->sequence_number;
63 rc = smb_send(server, in_buf, be32_to_cpu(in_buf->smb_buf_length));
65 server->sequence_number--;
67 mutex_unlock(&server->srv_mutex);
69 cifs_dbg(FYI, "issued NT_CANCEL for mid %u, rc = %d\n",
76 cifs_compare_fids(struct cifsFileInfo *ob1, struct cifsFileInfo *ob2)
78 return ob1->fid.netfid == ob2->fid.netfid;
82 cifs_read_data_offset(char *buf)
84 READ_RSP *rsp = (READ_RSP *)buf;
85 return le16_to_cpu(rsp->DataOffset);
89 cifs_read_data_length(char *buf)
91 READ_RSP *rsp = (READ_RSP *)buf;
92 return (le16_to_cpu(rsp->DataLengthHigh) << 16) +
93 le16_to_cpu(rsp->DataLength);
96 static struct mid_q_entry *
97 cifs_find_mid(struct TCP_Server_Info *server, char *buffer)
99 struct smb_hdr *buf = (struct smb_hdr *)buffer;
100 struct mid_q_entry *mid;
102 spin_lock(&GlobalMid_Lock);
103 list_for_each_entry(mid, &server->pending_mid_q, qhead) {
104 if (mid->mid == buf->Mid &&
105 mid->mid_state == MID_REQUEST_SUBMITTED &&
106 le16_to_cpu(mid->command) == buf->Command) {
107 spin_unlock(&GlobalMid_Lock);
111 spin_unlock(&GlobalMid_Lock);
116 cifs_add_credits(struct TCP_Server_Info *server, const unsigned int add,
119 spin_lock(&server->req_lock);
120 server->credits += add;
122 spin_unlock(&server->req_lock);
123 wake_up(&server->request_q);
127 cifs_set_credits(struct TCP_Server_Info *server, const int val)
129 spin_lock(&server->req_lock);
130 server->credits = val;
131 server->oplocks = val > 1 ? enable_oplocks : false;
132 spin_unlock(&server->req_lock);
136 cifs_get_credits_field(struct TCP_Server_Info *server, const int optype)
138 return &server->credits;
142 cifs_get_credits(struct mid_q_entry *mid)
148 * Find a free multiplex id (SMB mid). Otherwise there could be
149 * mid collisions which might cause problems, demultiplexing the
150 * wrong response to this request. Multiplex ids could collide if
151 * one of a series requests takes much longer than the others, or
152 * if a very large number of long lived requests (byte range
153 * locks or FindNotify requests) are pending. No more than
154 * 64K-1 requests can be outstanding at one time. If no
155 * mids are available, return zero. A future optimization
156 * could make the combination of mids and uid the key we use
157 * to demultiplex on (rather than mid alone).
158 * In addition to the above check, the cifs demultiplex
159 * code already used the command code as a secondary
160 * check of the frame and if signing is negotiated the
161 * response would be discarded if the mid were the same
162 * but the signature was wrong. Since the mid is not put in the
163 * pending queue until later (when it is about to be dispatched)
164 * we do have to limit the number of outstanding requests
165 * to somewhat less than 64K-1 although it is hard to imagine
166 * so many threads being in the vfs at one time.
169 cifs_get_next_mid(struct TCP_Server_Info *server)
172 __u16 last_mid, cur_mid;
175 spin_lock(&GlobalMid_Lock);
177 /* mid is 16 bit only for CIFS/SMB */
178 cur_mid = (__u16)((server->CurrentMid) & 0xffff);
179 /* we do not want to loop forever */
184 * This nested loop looks more expensive than it is.
185 * In practice the list of pending requests is short,
186 * fewer than 50, and the mids are likely to be unique
187 * on the first pass through the loop unless some request
188 * takes longer than the 64 thousand requests before it
189 * (and it would also have to have been a request that
192 while (cur_mid != last_mid) {
193 struct mid_q_entry *mid_entry;
194 unsigned int num_mids;
201 list_for_each_entry(mid_entry, &server->pending_mid_q, qhead) {
203 if (mid_entry->mid == cur_mid &&
204 mid_entry->mid_state == MID_REQUEST_SUBMITTED) {
205 /* This mid is in use, try a different one */
212 * if we have more than 32k mids in the list, then something
213 * is very wrong. Possibly a local user is trying to DoS the
214 * box by issuing long-running calls and SIGKILL'ing them. If
215 * we get to 2^16 mids then we're in big trouble as this
216 * function could loop forever.
218 * Go ahead and assign out the mid in this situation, but force
219 * an eventual reconnect to clean out the pending_mid_q.
221 if (num_mids > 32768)
222 server->tcpStatus = CifsNeedReconnect;
225 mid = (__u64)cur_mid;
226 server->CurrentMid = mid;
231 spin_unlock(&GlobalMid_Lock);
237 0 not a transact2, or all data present
238 >0 transact2 with that much data missing
239 -EINVAL invalid transact2
242 check2ndT2(char *buf)
244 struct smb_hdr *pSMB = (struct smb_hdr *)buf;
245 struct smb_t2_rsp *pSMBt;
247 __u16 total_data_size, data_in_this_rsp;
249 if (pSMB->Command != SMB_COM_TRANSACTION2)
252 /* check for plausible wct, bcc and t2 data and parm sizes */
253 /* check for parm and data offset going beyond end of smb */
254 if (pSMB->WordCount != 10) { /* coalesce_t2 depends on this */
255 cifs_dbg(FYI, "invalid transact2 word count\n");
259 pSMBt = (struct smb_t2_rsp *)pSMB;
261 total_data_size = get_unaligned_le16(&pSMBt->t2_rsp.TotalDataCount);
262 data_in_this_rsp = get_unaligned_le16(&pSMBt->t2_rsp.DataCount);
264 if (total_data_size == data_in_this_rsp)
266 else if (total_data_size < data_in_this_rsp) {
267 cifs_dbg(FYI, "total data %d smaller than data in frame %d\n",
268 total_data_size, data_in_this_rsp);
272 remaining = total_data_size - data_in_this_rsp;
274 cifs_dbg(FYI, "missing %d bytes from transact2, check next response\n",
276 if (total_data_size > CIFSMaxBufSize) {
277 cifs_dbg(VFS, "TotalDataSize %d is over maximum buffer %d\n",
278 total_data_size, CIFSMaxBufSize);
285 coalesce_t2(char *second_buf, struct smb_hdr *target_hdr)
287 struct smb_t2_rsp *pSMBs = (struct smb_t2_rsp *)second_buf;
288 struct smb_t2_rsp *pSMBt = (struct smb_t2_rsp *)target_hdr;
289 char *data_area_of_tgt;
290 char *data_area_of_src;
292 unsigned int byte_count, total_in_tgt;
293 __u16 tgt_total_cnt, src_total_cnt, total_in_src;
295 src_total_cnt = get_unaligned_le16(&pSMBs->t2_rsp.TotalDataCount);
296 tgt_total_cnt = get_unaligned_le16(&pSMBt->t2_rsp.TotalDataCount);
298 if (tgt_total_cnt != src_total_cnt)
299 cifs_dbg(FYI, "total data count of primary and secondary t2 differ source=%hu target=%hu\n",
300 src_total_cnt, tgt_total_cnt);
302 total_in_tgt = get_unaligned_le16(&pSMBt->t2_rsp.DataCount);
304 remaining = tgt_total_cnt - total_in_tgt;
307 cifs_dbg(FYI, "Server sent too much data. tgt_total_cnt=%hu total_in_tgt=%hu\n",
308 tgt_total_cnt, total_in_tgt);
312 if (remaining == 0) {
313 /* nothing to do, ignore */
314 cifs_dbg(FYI, "no more data remains\n");
318 total_in_src = get_unaligned_le16(&pSMBs->t2_rsp.DataCount);
319 if (remaining < total_in_src)
320 cifs_dbg(FYI, "transact2 2nd response contains too much data\n");
322 /* find end of first SMB data area */
323 data_area_of_tgt = (char *)&pSMBt->hdr.Protocol +
324 get_unaligned_le16(&pSMBt->t2_rsp.DataOffset);
326 /* validate target area */
327 data_area_of_src = (char *)&pSMBs->hdr.Protocol +
328 get_unaligned_le16(&pSMBs->t2_rsp.DataOffset);
330 data_area_of_tgt += total_in_tgt;
332 total_in_tgt += total_in_src;
333 /* is the result too big for the field? */
334 if (total_in_tgt > USHRT_MAX) {
335 cifs_dbg(FYI, "coalesced DataCount too large (%u)\n",
339 put_unaligned_le16(total_in_tgt, &pSMBt->t2_rsp.DataCount);
342 byte_count = get_bcc(target_hdr);
343 byte_count += total_in_src;
344 /* is the result too big for the field? */
345 if (byte_count > USHRT_MAX) {
346 cifs_dbg(FYI, "coalesced BCC too large (%u)\n", byte_count);
349 put_bcc(byte_count, target_hdr);
351 byte_count = be32_to_cpu(target_hdr->smb_buf_length);
352 byte_count += total_in_src;
353 /* don't allow buffer to overflow */
354 if (byte_count > CIFSMaxBufSize + MAX_CIFS_HDR_SIZE - 4) {
355 cifs_dbg(FYI, "coalesced BCC exceeds buffer size (%u)\n",
359 target_hdr->smb_buf_length = cpu_to_be32(byte_count);
361 /* copy second buffer into end of first buffer */
362 memcpy(data_area_of_tgt, data_area_of_src, total_in_src);
364 if (remaining != total_in_src) {
365 /* more responses to go */
366 cifs_dbg(FYI, "waiting for more secondary responses\n");
371 cifs_dbg(FYI, "found the last secondary response\n");
376 cifs_check_trans2(struct mid_q_entry *mid, struct TCP_Server_Info *server,
377 char *buf, int malformed)
381 if (check2ndT2(buf) <= 0)
383 mid->multiRsp = true;
385 /* merge response - fix up 1st*/
386 malformed = coalesce_t2(buf, mid->resp_buf);
389 /* All parts received or packet is malformed. */
390 mid->multiEnd = true;
391 dequeue_mid(mid, malformed);
394 if (!server->large_buf) {
395 /*FIXME: switch to already allocated largebuf?*/
396 cifs_dbg(VFS, "1st trans2 resp needs bigbuf\n");
398 /* Have first buffer */
400 mid->large_buf = true;
401 server->bigbuf = NULL;
407 cifs_need_neg(struct TCP_Server_Info *server)
409 return server->maxBuf == 0;
413 cifs_negotiate(const unsigned int xid, struct cifs_ses *ses)
416 rc = CIFSSMBNegotiate(xid, ses);
418 /* retry only once on 1st time connection */
419 set_credits(ses->server, 1);
420 rc = CIFSSMBNegotiate(xid, ses);
428 cifs_negotiate_wsize(struct cifs_tcon *tcon, struct smb_vol *volume_info)
430 __u64 unix_cap = le64_to_cpu(tcon->fsUnixInfo.Capability);
431 struct TCP_Server_Info *server = tcon->ses->server;
434 /* start with specified wsize, or default */
435 if (volume_info->wsize)
436 wsize = volume_info->wsize;
437 else if (tcon->unix_ext && (unix_cap & CIFS_UNIX_LARGE_WRITE_CAP))
438 wsize = CIFS_DEFAULT_IOSIZE;
440 wsize = CIFS_DEFAULT_NON_POSIX_WSIZE;
442 /* can server support 24-bit write sizes? (via UNIX extensions) */
443 if (!tcon->unix_ext || !(unix_cap & CIFS_UNIX_LARGE_WRITE_CAP))
444 wsize = min_t(unsigned int, wsize, CIFS_MAX_RFC1002_WSIZE);
447 * no CAP_LARGE_WRITE_X or is signing enabled without CAP_UNIX set?
448 * Limit it to max buffer offered by the server, minus the size of the
449 * WRITEX header, not including the 4 byte RFC1001 length.
451 if (!(server->capabilities & CAP_LARGE_WRITE_X) ||
452 (!(server->capabilities & CAP_UNIX) && server->sign))
453 wsize = min_t(unsigned int, wsize,
454 server->maxBuf - sizeof(WRITE_REQ) + 4);
456 /* hard limit of CIFS_MAX_WSIZE */
457 wsize = min_t(unsigned int, wsize, CIFS_MAX_WSIZE);
463 cifs_negotiate_rsize(struct cifs_tcon *tcon, struct smb_vol *volume_info)
465 __u64 unix_cap = le64_to_cpu(tcon->fsUnixInfo.Capability);
466 struct TCP_Server_Info *server = tcon->ses->server;
467 unsigned int rsize, defsize;
470 * Set default value...
472 * HACK alert! Ancient servers have very small buffers. Even though
473 * MS-CIFS indicates that servers are only limited by the client's
474 * bufsize for reads, testing against win98se shows that it throws
475 * INVALID_PARAMETER errors if you try to request too large a read.
476 * OS/2 just sends back short reads.
478 * If the server doesn't advertise CAP_LARGE_READ_X, then assume that
479 * it can't handle a read request larger than its MaxBufferSize either.
481 if (tcon->unix_ext && (unix_cap & CIFS_UNIX_LARGE_READ_CAP))
482 defsize = CIFS_DEFAULT_IOSIZE;
483 else if (server->capabilities & CAP_LARGE_READ_X)
484 defsize = CIFS_DEFAULT_NON_POSIX_RSIZE;
486 defsize = server->maxBuf - sizeof(READ_RSP);
488 rsize = volume_info->rsize ? volume_info->rsize : defsize;
491 * no CAP_LARGE_READ_X? Then MS-CIFS states that we must limit this to
492 * the client's MaxBufferSize.
494 if (!(server->capabilities & CAP_LARGE_READ_X))
495 rsize = min_t(unsigned int, CIFSMaxBufSize, rsize);
497 /* hard limit of CIFS_MAX_RSIZE */
498 rsize = min_t(unsigned int, rsize, CIFS_MAX_RSIZE);
504 cifs_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon)
506 CIFSSMBQFSDeviceInfo(xid, tcon);
507 CIFSSMBQFSAttributeInfo(xid, tcon);
511 cifs_is_path_accessible(const unsigned int xid, struct cifs_tcon *tcon,
512 struct cifs_sb_info *cifs_sb, const char *full_path)
515 FILE_ALL_INFO *file_info;
517 file_info = kmalloc(sizeof(FILE_ALL_INFO), GFP_KERNEL);
518 if (file_info == NULL)
521 rc = CIFSSMBQPathInfo(xid, tcon, full_path, file_info,
522 0 /* not legacy */, cifs_sb->local_nls,
523 cifs_sb->mnt_cifs_flags &
524 CIFS_MOUNT_MAP_SPECIAL_CHR);
526 if (rc == -EOPNOTSUPP || rc == -EINVAL)
527 rc = SMBQueryInformation(xid, tcon, full_path, file_info,
528 cifs_sb->local_nls, cifs_sb->mnt_cifs_flags &
529 CIFS_MOUNT_MAP_SPECIAL_CHR);
535 cifs_query_path_info(const unsigned int xid, struct cifs_tcon *tcon,
536 struct cifs_sb_info *cifs_sb, const char *full_path,
537 FILE_ALL_INFO *data, bool *adjustTZ)
541 /* could do find first instead but this returns more info */
542 rc = CIFSSMBQPathInfo(xid, tcon, full_path, data, 0 /* not legacy */,
543 cifs_sb->local_nls, cifs_sb->mnt_cifs_flags &
544 CIFS_MOUNT_MAP_SPECIAL_CHR);
546 * BB optimize code so we do not make the above call when server claims
547 * no NT SMB support and the above call failed at least once - set flag
550 if ((rc == -EOPNOTSUPP) || (rc == -EINVAL)) {
551 rc = SMBQueryInformation(xid, tcon, full_path, data,
553 cifs_sb->mnt_cifs_flags &
554 CIFS_MOUNT_MAP_SPECIAL_CHR);
561 cifs_get_srv_inum(const unsigned int xid, struct cifs_tcon *tcon,
562 struct cifs_sb_info *cifs_sb, const char *full_path,
563 u64 *uniqueid, FILE_ALL_INFO *data)
566 * We can not use the IndexNumber field by default from Windows or
567 * Samba (in ALL_INFO buf) but we can request it explicitly. The SNIA
568 * CIFS spec claims that this value is unique within the scope of a
569 * share, and the windows docs hint that it's actually unique
572 * There may be higher info levels that work but are there Windows
573 * server or network appliances for which IndexNumber field is not
576 return CIFSGetSrvInodeNumber(xid, tcon, full_path, uniqueid,
578 cifs_sb->mnt_cifs_flags &
579 CIFS_MOUNT_MAP_SPECIAL_CHR);
583 cifs_query_file_info(const unsigned int xid, struct cifs_tcon *tcon,
584 struct cifs_fid *fid, FILE_ALL_INFO *data)
586 return CIFSSMBQFileInfo(xid, tcon, fid->netfid, data);
590 cifs_clear_stats(struct cifs_tcon *tcon)
592 #ifdef CONFIG_CIFS_STATS
593 atomic_set(&tcon->stats.cifs_stats.num_writes, 0);
594 atomic_set(&tcon->stats.cifs_stats.num_reads, 0);
595 atomic_set(&tcon->stats.cifs_stats.num_flushes, 0);
596 atomic_set(&tcon->stats.cifs_stats.num_oplock_brks, 0);
597 atomic_set(&tcon->stats.cifs_stats.num_opens, 0);
598 atomic_set(&tcon->stats.cifs_stats.num_posixopens, 0);
599 atomic_set(&tcon->stats.cifs_stats.num_posixmkdirs, 0);
600 atomic_set(&tcon->stats.cifs_stats.num_closes, 0);
601 atomic_set(&tcon->stats.cifs_stats.num_deletes, 0);
602 atomic_set(&tcon->stats.cifs_stats.num_mkdirs, 0);
603 atomic_set(&tcon->stats.cifs_stats.num_rmdirs, 0);
604 atomic_set(&tcon->stats.cifs_stats.num_renames, 0);
605 atomic_set(&tcon->stats.cifs_stats.num_t2renames, 0);
606 atomic_set(&tcon->stats.cifs_stats.num_ffirst, 0);
607 atomic_set(&tcon->stats.cifs_stats.num_fnext, 0);
608 atomic_set(&tcon->stats.cifs_stats.num_fclose, 0);
609 atomic_set(&tcon->stats.cifs_stats.num_hardlinks, 0);
610 atomic_set(&tcon->stats.cifs_stats.num_symlinks, 0);
611 atomic_set(&tcon->stats.cifs_stats.num_locks, 0);
612 atomic_set(&tcon->stats.cifs_stats.num_acl_get, 0);
613 atomic_set(&tcon->stats.cifs_stats.num_acl_set, 0);
618 cifs_print_stats(struct seq_file *m, struct cifs_tcon *tcon)
620 #ifdef CONFIG_CIFS_STATS
621 seq_printf(m, " Oplocks breaks: %d",
622 atomic_read(&tcon->stats.cifs_stats.num_oplock_brks));
623 seq_printf(m, "\nReads: %d Bytes: %llu",
624 atomic_read(&tcon->stats.cifs_stats.num_reads),
625 (long long)(tcon->bytes_read));
626 seq_printf(m, "\nWrites: %d Bytes: %llu",
627 atomic_read(&tcon->stats.cifs_stats.num_writes),
628 (long long)(tcon->bytes_written));
629 seq_printf(m, "\nFlushes: %d",
630 atomic_read(&tcon->stats.cifs_stats.num_flushes));
631 seq_printf(m, "\nLocks: %d HardLinks: %d Symlinks: %d",
632 atomic_read(&tcon->stats.cifs_stats.num_locks),
633 atomic_read(&tcon->stats.cifs_stats.num_hardlinks),
634 atomic_read(&tcon->stats.cifs_stats.num_symlinks));
635 seq_printf(m, "\nOpens: %d Closes: %d Deletes: %d",
636 atomic_read(&tcon->stats.cifs_stats.num_opens),
637 atomic_read(&tcon->stats.cifs_stats.num_closes),
638 atomic_read(&tcon->stats.cifs_stats.num_deletes));
639 seq_printf(m, "\nPosix Opens: %d Posix Mkdirs: %d",
640 atomic_read(&tcon->stats.cifs_stats.num_posixopens),
641 atomic_read(&tcon->stats.cifs_stats.num_posixmkdirs));
642 seq_printf(m, "\nMkdirs: %d Rmdirs: %d",
643 atomic_read(&tcon->stats.cifs_stats.num_mkdirs),
644 atomic_read(&tcon->stats.cifs_stats.num_rmdirs));
645 seq_printf(m, "\nRenames: %d T2 Renames %d",
646 atomic_read(&tcon->stats.cifs_stats.num_renames),
647 atomic_read(&tcon->stats.cifs_stats.num_t2renames));
648 seq_printf(m, "\nFindFirst: %d FNext %d FClose %d",
649 atomic_read(&tcon->stats.cifs_stats.num_ffirst),
650 atomic_read(&tcon->stats.cifs_stats.num_fnext),
651 atomic_read(&tcon->stats.cifs_stats.num_fclose));
656 cifs_mkdir_setinfo(struct inode *inode, const char *full_path,
657 struct cifs_sb_info *cifs_sb, struct cifs_tcon *tcon,
658 const unsigned int xid)
660 FILE_BASIC_INFO info;
661 struct cifsInodeInfo *cifsInode;
665 memset(&info, 0, sizeof(info));
666 cifsInode = CIFS_I(inode);
667 dosattrs = cifsInode->cifsAttrs|ATTR_READONLY;
668 info.Attributes = cpu_to_le32(dosattrs);
669 rc = CIFSSMBSetPathInfo(xid, tcon, full_path, &info, cifs_sb->local_nls,
670 cifs_sb->mnt_cifs_flags &
671 CIFS_MOUNT_MAP_SPECIAL_CHR);
673 cifsInode->cifsAttrs = dosattrs;
677 cifs_open_file(const unsigned int xid, struct cifs_open_parms *oparms,
678 __u32 *oplock, FILE_ALL_INFO *buf)
680 if (!(oparms->tcon->ses->capabilities & CAP_NT_SMBS))
681 return SMBLegacyOpen(xid, oparms->tcon, oparms->path,
683 oparms->desired_access,
684 oparms->create_options,
685 &oparms->fid->netfid, oplock, buf,
686 oparms->cifs_sb->local_nls,
687 oparms->cifs_sb->mnt_cifs_flags
688 & CIFS_MOUNT_MAP_SPECIAL_CHR);
689 return CIFSSMBOpen(xid, oparms->tcon, oparms->path,
690 oparms->disposition, oparms->desired_access,
691 oparms->create_options, &oparms->fid->netfid, oplock,
692 buf, oparms->cifs_sb->local_nls,
693 oparms->cifs_sb->mnt_cifs_flags &
694 CIFS_MOUNT_MAP_SPECIAL_CHR);
698 cifs_set_fid(struct cifsFileInfo *cfile, struct cifs_fid *fid, __u32 oplock)
700 struct cifsInodeInfo *cinode = CIFS_I(cfile->dentry->d_inode);
701 cfile->fid.netfid = fid->netfid;
702 cifs_set_oplock_level(cinode, oplock);
703 cinode->can_cache_brlcks = cinode->clientCanCacheAll;
707 cifs_close_file(const unsigned int xid, struct cifs_tcon *tcon,
708 struct cifs_fid *fid)
710 CIFSSMBClose(xid, tcon, fid->netfid);
714 cifs_flush_file(const unsigned int xid, struct cifs_tcon *tcon,
715 struct cifs_fid *fid)
717 return CIFSSMBFlush(xid, tcon, fid->netfid);
721 cifs_sync_read(const unsigned int xid, struct cifsFileInfo *cfile,
722 struct cifs_io_parms *parms, unsigned int *bytes_read,
723 char **buf, int *buf_type)
725 parms->netfid = cfile->fid.netfid;
726 return CIFSSMBRead(xid, parms, bytes_read, buf, buf_type);
730 cifs_sync_write(const unsigned int xid, struct cifsFileInfo *cfile,
731 struct cifs_io_parms *parms, unsigned int *written,
732 struct kvec *iov, unsigned long nr_segs)
735 parms->netfid = cfile->fid.netfid;
736 return CIFSSMBWrite2(xid, parms, written, iov, nr_segs);
740 smb_set_file_info(struct inode *inode, const char *full_path,
741 FILE_BASIC_INFO *buf, const unsigned int xid)
747 struct cifsFileInfo *open_file;
748 struct cifsInodeInfo *cinode = CIFS_I(inode);
749 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
750 struct tcon_link *tlink = NULL;
751 struct cifs_tcon *tcon;
753 /* if the file is already open for write, just use that fileid */
754 open_file = find_writable_file(cinode, true);
756 netfid = open_file->fid.netfid;
757 netpid = open_file->pid;
758 tcon = tlink_tcon(open_file->tlink);
759 goto set_via_filehandle;
762 tlink = cifs_sb_tlink(cifs_sb);
768 tcon = tlink_tcon(tlink);
770 rc = CIFSSMBSetPathInfo(xid, tcon, full_path, buf, cifs_sb->local_nls,
771 cifs_sb->mnt_cifs_flags &
772 CIFS_MOUNT_MAP_SPECIAL_CHR);
774 cinode->cifsAttrs = le32_to_cpu(buf->Attributes);
776 } else if (rc != -EOPNOTSUPP && rc != -EINVAL) {
780 cifs_dbg(FYI, "calling SetFileInfo since SetPathInfo for times not supported by this server\n");
781 rc = CIFSSMBOpen(xid, tcon, full_path, FILE_OPEN,
782 SYNCHRONIZE | FILE_WRITE_ATTRIBUTES, CREATE_NOT_DIR,
783 &netfid, &oplock, NULL, cifs_sb->local_nls,
784 cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
792 netpid = current->tgid;
795 rc = CIFSSMBSetFileInfo(xid, tcon, buf, netfid, netpid);
797 cinode->cifsAttrs = le32_to_cpu(buf->Attributes);
799 if (open_file == NULL)
800 CIFSSMBClose(xid, tcon, netfid);
802 cifsFileInfo_put(open_file);
805 cifs_put_tlink(tlink);
810 cifs_query_dir_first(const unsigned int xid, struct cifs_tcon *tcon,
811 const char *path, struct cifs_sb_info *cifs_sb,
812 struct cifs_fid *fid, __u16 search_flags,
813 struct cifs_search_info *srch_inf)
815 return CIFSFindFirst(xid, tcon, path, cifs_sb,
816 &fid->netfid, search_flags, srch_inf, true);
820 cifs_query_dir_next(const unsigned int xid, struct cifs_tcon *tcon,
821 struct cifs_fid *fid, __u16 search_flags,
822 struct cifs_search_info *srch_inf)
824 return CIFSFindNext(xid, tcon, fid->netfid, search_flags, srch_inf);
828 cifs_close_dir(const unsigned int xid, struct cifs_tcon *tcon,
829 struct cifs_fid *fid)
831 return CIFSFindClose(xid, tcon, fid->netfid);
835 cifs_oplock_response(struct cifs_tcon *tcon, struct cifs_fid *fid,
836 struct cifsInodeInfo *cinode)
838 return CIFSSMBLock(0, tcon, fid->netfid, current->tgid, 0, 0, 0, 0,
839 LOCKING_ANDX_OPLOCK_RELEASE, false,
840 cinode->clientCanCacheRead ? 1 : 0);
844 cifs_queryfs(const unsigned int xid, struct cifs_tcon *tcon,
847 int rc = -EOPNOTSUPP;
849 buf->f_type = CIFS_MAGIC_NUMBER;
852 * We could add a second check for a QFS Unix capability bit
854 if ((tcon->ses->capabilities & CAP_UNIX) &&
855 (CIFS_POSIX_EXTENSIONS & le64_to_cpu(tcon->fsUnixInfo.Capability)))
856 rc = CIFSSMBQFSPosixInfo(xid, tcon, buf);
859 * Only need to call the old QFSInfo if failed on newer one,
862 if (rc && (tcon->ses->capabilities & CAP_NT_SMBS))
863 rc = CIFSSMBQFSInfo(xid, tcon, buf);
866 * Some old Windows servers also do not support level 103, retry with
867 * older level one if old server failed the previous call or we
868 * bypassed it because we detected that this was an older LANMAN sess
871 rc = SMBOldQFSInfo(xid, tcon, buf);
876 cifs_mand_lock(const unsigned int xid, struct cifsFileInfo *cfile, __u64 offset,
877 __u64 length, __u32 type, int lock, int unlock, bool wait)
879 return CIFSSMBLock(xid, tlink_tcon(cfile->tlink), cfile->fid.netfid,
880 current->tgid, length, offset, unlock, lock,
881 (__u8)type, wait, 0);
884 struct smb_version_operations smb1_operations = {
885 .send_cancel = send_nt_cancel,
886 .compare_fids = cifs_compare_fids,
887 .setup_request = cifs_setup_request,
888 .setup_async_request = cifs_setup_async_request,
889 .check_receive = cifs_check_receive,
890 .add_credits = cifs_add_credits,
891 .set_credits = cifs_set_credits,
892 .get_credits_field = cifs_get_credits_field,
893 .get_credits = cifs_get_credits,
894 .get_next_mid = cifs_get_next_mid,
895 .read_data_offset = cifs_read_data_offset,
896 .read_data_length = cifs_read_data_length,
897 .map_error = map_smb_to_linux_error,
898 .find_mid = cifs_find_mid,
899 .check_message = checkSMB,
900 .dump_detail = cifs_dump_detail,
901 .clear_stats = cifs_clear_stats,
902 .print_stats = cifs_print_stats,
903 .is_oplock_break = is_valid_oplock_break,
904 .check_trans2 = cifs_check_trans2,
905 .need_neg = cifs_need_neg,
906 .negotiate = cifs_negotiate,
907 .negotiate_wsize = cifs_negotiate_wsize,
908 .negotiate_rsize = cifs_negotiate_rsize,
909 .sess_setup = CIFS_SessSetup,
910 .logoff = CIFSSMBLogoff,
911 .tree_connect = CIFSTCon,
912 .tree_disconnect = CIFSSMBTDis,
913 .get_dfs_refer = CIFSGetDFSRefer,
914 .qfs_tcon = cifs_qfs_tcon,
915 .is_path_accessible = cifs_is_path_accessible,
916 .query_path_info = cifs_query_path_info,
917 .query_file_info = cifs_query_file_info,
918 .get_srv_inum = cifs_get_srv_inum,
919 .set_path_size = CIFSSMBSetEOF,
920 .set_file_size = CIFSSMBSetFileSize,
921 .set_file_info = smb_set_file_info,
923 .mkdir = CIFSSMBMkDir,
924 .mkdir_setinfo = cifs_mkdir_setinfo,
925 .rmdir = CIFSSMBRmDir,
926 .unlink = CIFSSMBDelFile,
927 .rename_pending_delete = cifs_rename_pending_delete,
928 .rename = CIFSSMBRename,
929 .create_hardlink = CIFSCreateHardLink,
930 .open = cifs_open_file,
931 .set_fid = cifs_set_fid,
932 .close = cifs_close_file,
933 .flush = cifs_flush_file,
934 .async_readv = cifs_async_readv,
935 .async_writev = cifs_async_writev,
936 .sync_read = cifs_sync_read,
937 .sync_write = cifs_sync_write,
938 .query_dir_first = cifs_query_dir_first,
939 .query_dir_next = cifs_query_dir_next,
940 .close_dir = cifs_close_dir,
941 .calc_smb_size = smbCalcSize,
942 .oplock_response = cifs_oplock_response,
943 .queryfs = cifs_queryfs,
944 .mand_lock = cifs_mand_lock,
945 .mand_unlock_range = cifs_unlock_range,
946 .push_mand_locks = cifs_push_mandatory_locks,
947 .query_mf_symlink = open_query_close_cifs_symlink,
950 struct smb_version_values smb1_values = {
951 .version_string = SMB1_VERSION_STRING,
952 .large_lock_type = LOCKING_ANDX_LARGE_FILES,
953 .exclusive_lock_type = 0,
954 .shared_lock_type = LOCKING_ANDX_SHARED_LOCK,
955 .unlock_lock_type = 0,
956 .header_size = sizeof(struct smb_hdr),
957 .max_header_size = MAX_CIFS_HDR_SIZE,
958 .read_rsp_size = sizeof(READ_RSP),
959 .lock_cmd = cpu_to_le16(SMB_COM_LOCKING_ANDX),
960 .cap_unix = CAP_UNIX,
961 .cap_nt_find = CAP_NT_SMBS | CAP_NT_FIND,
962 .cap_large_files = CAP_LARGE_FILES,
963 .oplock_read = OPLOCK_READ,
964 .signing_enabled = SECMODE_SIGN_ENABLED,
965 .signing_required = SECMODE_SIGN_REQUIRED,