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));
64 mutex_unlock(&server->srv_mutex);
66 cifs_dbg(FYI, "issued NT_CANCEL for mid %u, rc = %d\n",
73 cifs_compare_fids(struct cifsFileInfo *ob1, struct cifsFileInfo *ob2)
75 return ob1->fid.netfid == ob2->fid.netfid;
79 cifs_read_data_offset(char *buf)
81 READ_RSP *rsp = (READ_RSP *)buf;
82 return le16_to_cpu(rsp->DataOffset);
86 cifs_read_data_length(char *buf)
88 READ_RSP *rsp = (READ_RSP *)buf;
89 return (le16_to_cpu(rsp->DataLengthHigh) << 16) +
90 le16_to_cpu(rsp->DataLength);
93 static struct mid_q_entry *
94 cifs_find_mid(struct TCP_Server_Info *server, char *buffer)
96 struct smb_hdr *buf = (struct smb_hdr *)buffer;
97 struct mid_q_entry *mid;
99 spin_lock(&GlobalMid_Lock);
100 list_for_each_entry(mid, &server->pending_mid_q, qhead) {
101 if (mid->mid == buf->Mid &&
102 mid->mid_state == MID_REQUEST_SUBMITTED &&
103 le16_to_cpu(mid->command) == buf->Command) {
104 spin_unlock(&GlobalMid_Lock);
108 spin_unlock(&GlobalMid_Lock);
113 cifs_add_credits(struct TCP_Server_Info *server, const unsigned int add,
116 spin_lock(&server->req_lock);
117 server->credits += add;
119 spin_unlock(&server->req_lock);
120 wake_up(&server->request_q);
124 cifs_set_credits(struct TCP_Server_Info *server, const int val)
126 spin_lock(&server->req_lock);
127 server->credits = val;
128 server->oplocks = val > 1 ? enable_oplocks : false;
129 spin_unlock(&server->req_lock);
133 cifs_get_credits_field(struct TCP_Server_Info *server, const int optype)
135 return &server->credits;
139 cifs_get_credits(struct mid_q_entry *mid)
145 * Find a free multiplex id (SMB mid). Otherwise there could be
146 * mid collisions which might cause problems, demultiplexing the
147 * wrong response to this request. Multiplex ids could collide if
148 * one of a series requests takes much longer than the others, or
149 * if a very large number of long lived requests (byte range
150 * locks or FindNotify requests) are pending. No more than
151 * 64K-1 requests can be outstanding at one time. If no
152 * mids are available, return zero. A future optimization
153 * could make the combination of mids and uid the key we use
154 * to demultiplex on (rather than mid alone).
155 * In addition to the above check, the cifs demultiplex
156 * code already used the command code as a secondary
157 * check of the frame and if signing is negotiated the
158 * response would be discarded if the mid were the same
159 * but the signature was wrong. Since the mid is not put in the
160 * pending queue until later (when it is about to be dispatched)
161 * we do have to limit the number of outstanding requests
162 * to somewhat less than 64K-1 although it is hard to imagine
163 * so many threads being in the vfs at one time.
166 cifs_get_next_mid(struct TCP_Server_Info *server)
169 __u16 last_mid, cur_mid;
172 spin_lock(&GlobalMid_Lock);
174 /* mid is 16 bit only for CIFS/SMB */
175 cur_mid = (__u16)((server->CurrentMid) & 0xffff);
176 /* we do not want to loop forever */
181 * This nested loop looks more expensive than it is.
182 * In practice the list of pending requests is short,
183 * fewer than 50, and the mids are likely to be unique
184 * on the first pass through the loop unless some request
185 * takes longer than the 64 thousand requests before it
186 * (and it would also have to have been a request that
189 while (cur_mid != last_mid) {
190 struct mid_q_entry *mid_entry;
191 unsigned int num_mids;
198 list_for_each_entry(mid_entry, &server->pending_mid_q, qhead) {
200 if (mid_entry->mid == cur_mid &&
201 mid_entry->mid_state == MID_REQUEST_SUBMITTED) {
202 /* This mid is in use, try a different one */
209 * if we have more than 32k mids in the list, then something
210 * is very wrong. Possibly a local user is trying to DoS the
211 * box by issuing long-running calls and SIGKILL'ing them. If
212 * we get to 2^16 mids then we're in big trouble as this
213 * function could loop forever.
215 * Go ahead and assign out the mid in this situation, but force
216 * an eventual reconnect to clean out the pending_mid_q.
218 if (num_mids > 32768)
219 server->tcpStatus = CifsNeedReconnect;
222 mid = (__u64)cur_mid;
223 server->CurrentMid = mid;
228 spin_unlock(&GlobalMid_Lock);
234 0 not a transact2, or all data present
235 >0 transact2 with that much data missing
236 -EINVAL invalid transact2
239 check2ndT2(char *buf)
241 struct smb_hdr *pSMB = (struct smb_hdr *)buf;
242 struct smb_t2_rsp *pSMBt;
244 __u16 total_data_size, data_in_this_rsp;
246 if (pSMB->Command != SMB_COM_TRANSACTION2)
249 /* check for plausible wct, bcc and t2 data and parm sizes */
250 /* check for parm and data offset going beyond end of smb */
251 if (pSMB->WordCount != 10) { /* coalesce_t2 depends on this */
252 cifs_dbg(FYI, "invalid transact2 word count\n");
256 pSMBt = (struct smb_t2_rsp *)pSMB;
258 total_data_size = get_unaligned_le16(&pSMBt->t2_rsp.TotalDataCount);
259 data_in_this_rsp = get_unaligned_le16(&pSMBt->t2_rsp.DataCount);
261 if (total_data_size == data_in_this_rsp)
263 else if (total_data_size < data_in_this_rsp) {
264 cifs_dbg(FYI, "total data %d smaller than data in frame %d\n",
265 total_data_size, data_in_this_rsp);
269 remaining = total_data_size - data_in_this_rsp;
271 cifs_dbg(FYI, "missing %d bytes from transact2, check next response\n",
273 if (total_data_size > CIFSMaxBufSize) {
274 cifs_dbg(VFS, "TotalDataSize %d is over maximum buffer %d\n",
275 total_data_size, CIFSMaxBufSize);
282 coalesce_t2(char *second_buf, struct smb_hdr *target_hdr)
284 struct smb_t2_rsp *pSMBs = (struct smb_t2_rsp *)second_buf;
285 struct smb_t2_rsp *pSMBt = (struct smb_t2_rsp *)target_hdr;
286 char *data_area_of_tgt;
287 char *data_area_of_src;
289 unsigned int byte_count, total_in_tgt;
290 __u16 tgt_total_cnt, src_total_cnt, total_in_src;
292 src_total_cnt = get_unaligned_le16(&pSMBs->t2_rsp.TotalDataCount);
293 tgt_total_cnt = get_unaligned_le16(&pSMBt->t2_rsp.TotalDataCount);
295 if (tgt_total_cnt != src_total_cnt)
296 cifs_dbg(FYI, "total data count of primary and secondary t2 differ source=%hu target=%hu\n",
297 src_total_cnt, tgt_total_cnt);
299 total_in_tgt = get_unaligned_le16(&pSMBt->t2_rsp.DataCount);
301 remaining = tgt_total_cnt - total_in_tgt;
304 cifs_dbg(FYI, "Server sent too much data. tgt_total_cnt=%hu total_in_tgt=%hu\n",
305 tgt_total_cnt, total_in_tgt);
309 if (remaining == 0) {
310 /* nothing to do, ignore */
311 cifs_dbg(FYI, "no more data remains\n");
315 total_in_src = get_unaligned_le16(&pSMBs->t2_rsp.DataCount);
316 if (remaining < total_in_src)
317 cifs_dbg(FYI, "transact2 2nd response contains too much data\n");
319 /* find end of first SMB data area */
320 data_area_of_tgt = (char *)&pSMBt->hdr.Protocol +
321 get_unaligned_le16(&pSMBt->t2_rsp.DataOffset);
323 /* validate target area */
324 data_area_of_src = (char *)&pSMBs->hdr.Protocol +
325 get_unaligned_le16(&pSMBs->t2_rsp.DataOffset);
327 data_area_of_tgt += total_in_tgt;
329 total_in_tgt += total_in_src;
330 /* is the result too big for the field? */
331 if (total_in_tgt > USHRT_MAX) {
332 cifs_dbg(FYI, "coalesced DataCount too large (%u)\n",
336 put_unaligned_le16(total_in_tgt, &pSMBt->t2_rsp.DataCount);
339 byte_count = get_bcc(target_hdr);
340 byte_count += total_in_src;
341 /* is the result too big for the field? */
342 if (byte_count > USHRT_MAX) {
343 cifs_dbg(FYI, "coalesced BCC too large (%u)\n", byte_count);
346 put_bcc(byte_count, target_hdr);
348 byte_count = be32_to_cpu(target_hdr->smb_buf_length);
349 byte_count += total_in_src;
350 /* don't allow buffer to overflow */
351 if (byte_count > CIFSMaxBufSize + MAX_CIFS_HDR_SIZE - 4) {
352 cifs_dbg(FYI, "coalesced BCC exceeds buffer size (%u)\n",
356 target_hdr->smb_buf_length = cpu_to_be32(byte_count);
358 /* copy second buffer into end of first buffer */
359 memcpy(data_area_of_tgt, data_area_of_src, total_in_src);
361 if (remaining != total_in_src) {
362 /* more responses to go */
363 cifs_dbg(FYI, "waiting for more secondary responses\n");
368 cifs_dbg(FYI, "found the last secondary response\n");
373 cifs_check_trans2(struct mid_q_entry *mid, struct TCP_Server_Info *server,
374 char *buf, int malformed)
378 if (check2ndT2(buf) <= 0)
380 mid->multiRsp = true;
382 /* merge response - fix up 1st*/
383 malformed = coalesce_t2(buf, mid->resp_buf);
386 /* All parts received or packet is malformed. */
387 mid->multiEnd = true;
388 dequeue_mid(mid, malformed);
391 if (!server->large_buf) {
392 /*FIXME: switch to already allocated largebuf?*/
393 cifs_dbg(VFS, "1st trans2 resp needs bigbuf\n");
395 /* Have first buffer */
397 mid->large_buf = true;
398 server->bigbuf = NULL;
404 cifs_need_neg(struct TCP_Server_Info *server)
406 return server->maxBuf == 0;
410 cifs_negotiate(const unsigned int xid, struct cifs_ses *ses)
413 rc = CIFSSMBNegotiate(xid, ses);
415 /* retry only once on 1st time connection */
416 set_credits(ses->server, 1);
417 rc = CIFSSMBNegotiate(xid, ses);
425 cifs_negotiate_wsize(struct cifs_tcon *tcon, struct smb_vol *volume_info)
427 __u64 unix_cap = le64_to_cpu(tcon->fsUnixInfo.Capability);
428 struct TCP_Server_Info *server = tcon->ses->server;
431 /* start with specified wsize, or default */
432 if (volume_info->wsize)
433 wsize = volume_info->wsize;
434 else if (tcon->unix_ext && (unix_cap & CIFS_UNIX_LARGE_WRITE_CAP))
435 wsize = CIFS_DEFAULT_IOSIZE;
437 wsize = CIFS_DEFAULT_NON_POSIX_WSIZE;
439 /* can server support 24-bit write sizes? (via UNIX extensions) */
440 if (!tcon->unix_ext || !(unix_cap & CIFS_UNIX_LARGE_WRITE_CAP))
441 wsize = min_t(unsigned int, wsize, CIFS_MAX_RFC1002_WSIZE);
444 * no CAP_LARGE_WRITE_X or is signing enabled without CAP_UNIX set?
445 * Limit it to max buffer offered by the server, minus the size of the
446 * WRITEX header, not including the 4 byte RFC1001 length.
448 if (!(server->capabilities & CAP_LARGE_WRITE_X) ||
449 (!(server->capabilities & CAP_UNIX) &&
450 (server->sec_mode & (SECMODE_SIGN_ENABLED|SECMODE_SIGN_REQUIRED))))
451 wsize = min_t(unsigned int, wsize,
452 server->maxBuf - sizeof(WRITE_REQ) + 4);
454 /* hard limit of CIFS_MAX_WSIZE */
455 wsize = min_t(unsigned int, wsize, CIFS_MAX_WSIZE);
461 cifs_negotiate_rsize(struct cifs_tcon *tcon, struct smb_vol *volume_info)
463 __u64 unix_cap = le64_to_cpu(tcon->fsUnixInfo.Capability);
464 struct TCP_Server_Info *server = tcon->ses->server;
465 unsigned int rsize, defsize;
468 * Set default value...
470 * HACK alert! Ancient servers have very small buffers. Even though
471 * MS-CIFS indicates that servers are only limited by the client's
472 * bufsize for reads, testing against win98se shows that it throws
473 * INVALID_PARAMETER errors if you try to request too large a read.
474 * OS/2 just sends back short reads.
476 * If the server doesn't advertise CAP_LARGE_READ_X, then assume that
477 * it can't handle a read request larger than its MaxBufferSize either.
479 if (tcon->unix_ext && (unix_cap & CIFS_UNIX_LARGE_READ_CAP))
480 defsize = CIFS_DEFAULT_IOSIZE;
481 else if (server->capabilities & CAP_LARGE_READ_X)
482 defsize = CIFS_DEFAULT_NON_POSIX_RSIZE;
484 defsize = server->maxBuf - sizeof(READ_RSP);
486 rsize = volume_info->rsize ? volume_info->rsize : defsize;
489 * no CAP_LARGE_READ_X? Then MS-CIFS states that we must limit this to
490 * the client's MaxBufferSize.
492 if (!(server->capabilities & CAP_LARGE_READ_X))
493 rsize = min_t(unsigned int, CIFSMaxBufSize, rsize);
495 /* hard limit of CIFS_MAX_RSIZE */
496 rsize = min_t(unsigned int, rsize, CIFS_MAX_RSIZE);
502 cifs_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon)
504 CIFSSMBQFSDeviceInfo(xid, tcon);
505 CIFSSMBQFSAttributeInfo(xid, tcon);
509 cifs_is_path_accessible(const unsigned int xid, struct cifs_tcon *tcon,
510 struct cifs_sb_info *cifs_sb, const char *full_path)
513 FILE_ALL_INFO *file_info;
515 file_info = kmalloc(sizeof(FILE_ALL_INFO), GFP_KERNEL);
516 if (file_info == NULL)
519 rc = CIFSSMBQPathInfo(xid, tcon, full_path, file_info,
520 0 /* not legacy */, cifs_sb->local_nls,
521 cifs_sb->mnt_cifs_flags &
522 CIFS_MOUNT_MAP_SPECIAL_CHR);
524 if (rc == -EOPNOTSUPP || rc == -EINVAL)
525 rc = SMBQueryInformation(xid, tcon, full_path, file_info,
526 cifs_sb->local_nls, cifs_sb->mnt_cifs_flags &
527 CIFS_MOUNT_MAP_SPECIAL_CHR);
533 cifs_query_path_info(const unsigned int xid, struct cifs_tcon *tcon,
534 struct cifs_sb_info *cifs_sb, const char *full_path,
535 FILE_ALL_INFO *data, bool *adjustTZ)
539 /* could do find first instead but this returns more info */
540 rc = CIFSSMBQPathInfo(xid, tcon, full_path, data, 0 /* not legacy */,
541 cifs_sb->local_nls, cifs_sb->mnt_cifs_flags &
542 CIFS_MOUNT_MAP_SPECIAL_CHR);
544 * BB optimize code so we do not make the above call when server claims
545 * no NT SMB support and the above call failed at least once - set flag
548 if ((rc == -EOPNOTSUPP) || (rc == -EINVAL)) {
549 rc = SMBQueryInformation(xid, tcon, full_path, data,
551 cifs_sb->mnt_cifs_flags &
552 CIFS_MOUNT_MAP_SPECIAL_CHR);
559 cifs_get_srv_inum(const unsigned int xid, struct cifs_tcon *tcon,
560 struct cifs_sb_info *cifs_sb, const char *full_path,
561 u64 *uniqueid, FILE_ALL_INFO *data)
564 * We can not use the IndexNumber field by default from Windows or
565 * Samba (in ALL_INFO buf) but we can request it explicitly. The SNIA
566 * CIFS spec claims that this value is unique within the scope of a
567 * share, and the windows docs hint that it's actually unique
570 * There may be higher info levels that work but are there Windows
571 * server or network appliances for which IndexNumber field is not
574 return CIFSGetSrvInodeNumber(xid, tcon, full_path, uniqueid,
576 cifs_sb->mnt_cifs_flags &
577 CIFS_MOUNT_MAP_SPECIAL_CHR);
581 cifs_query_file_info(const unsigned int xid, struct cifs_tcon *tcon,
582 struct cifs_fid *fid, FILE_ALL_INFO *data)
584 return CIFSSMBQFileInfo(xid, tcon, fid->netfid, data);
588 cifs_clear_stats(struct cifs_tcon *tcon)
590 #ifdef CONFIG_CIFS_STATS
591 atomic_set(&tcon->stats.cifs_stats.num_writes, 0);
592 atomic_set(&tcon->stats.cifs_stats.num_reads, 0);
593 atomic_set(&tcon->stats.cifs_stats.num_flushes, 0);
594 atomic_set(&tcon->stats.cifs_stats.num_oplock_brks, 0);
595 atomic_set(&tcon->stats.cifs_stats.num_opens, 0);
596 atomic_set(&tcon->stats.cifs_stats.num_posixopens, 0);
597 atomic_set(&tcon->stats.cifs_stats.num_posixmkdirs, 0);
598 atomic_set(&tcon->stats.cifs_stats.num_closes, 0);
599 atomic_set(&tcon->stats.cifs_stats.num_deletes, 0);
600 atomic_set(&tcon->stats.cifs_stats.num_mkdirs, 0);
601 atomic_set(&tcon->stats.cifs_stats.num_rmdirs, 0);
602 atomic_set(&tcon->stats.cifs_stats.num_renames, 0);
603 atomic_set(&tcon->stats.cifs_stats.num_t2renames, 0);
604 atomic_set(&tcon->stats.cifs_stats.num_ffirst, 0);
605 atomic_set(&tcon->stats.cifs_stats.num_fnext, 0);
606 atomic_set(&tcon->stats.cifs_stats.num_fclose, 0);
607 atomic_set(&tcon->stats.cifs_stats.num_hardlinks, 0);
608 atomic_set(&tcon->stats.cifs_stats.num_symlinks, 0);
609 atomic_set(&tcon->stats.cifs_stats.num_locks, 0);
610 atomic_set(&tcon->stats.cifs_stats.num_acl_get, 0);
611 atomic_set(&tcon->stats.cifs_stats.num_acl_set, 0);
616 cifs_print_stats(struct seq_file *m, struct cifs_tcon *tcon)
618 #ifdef CONFIG_CIFS_STATS
619 seq_printf(m, " Oplocks breaks: %d",
620 atomic_read(&tcon->stats.cifs_stats.num_oplock_brks));
621 seq_printf(m, "\nReads: %d Bytes: %llu",
622 atomic_read(&tcon->stats.cifs_stats.num_reads),
623 (long long)(tcon->bytes_read));
624 seq_printf(m, "\nWrites: %d Bytes: %llu",
625 atomic_read(&tcon->stats.cifs_stats.num_writes),
626 (long long)(tcon->bytes_written));
627 seq_printf(m, "\nFlushes: %d",
628 atomic_read(&tcon->stats.cifs_stats.num_flushes));
629 seq_printf(m, "\nLocks: %d HardLinks: %d Symlinks: %d",
630 atomic_read(&tcon->stats.cifs_stats.num_locks),
631 atomic_read(&tcon->stats.cifs_stats.num_hardlinks),
632 atomic_read(&tcon->stats.cifs_stats.num_symlinks));
633 seq_printf(m, "\nOpens: %d Closes: %d Deletes: %d",
634 atomic_read(&tcon->stats.cifs_stats.num_opens),
635 atomic_read(&tcon->stats.cifs_stats.num_closes),
636 atomic_read(&tcon->stats.cifs_stats.num_deletes));
637 seq_printf(m, "\nPosix Opens: %d Posix Mkdirs: %d",
638 atomic_read(&tcon->stats.cifs_stats.num_posixopens),
639 atomic_read(&tcon->stats.cifs_stats.num_posixmkdirs));
640 seq_printf(m, "\nMkdirs: %d Rmdirs: %d",
641 atomic_read(&tcon->stats.cifs_stats.num_mkdirs),
642 atomic_read(&tcon->stats.cifs_stats.num_rmdirs));
643 seq_printf(m, "\nRenames: %d T2 Renames %d",
644 atomic_read(&tcon->stats.cifs_stats.num_renames),
645 atomic_read(&tcon->stats.cifs_stats.num_t2renames));
646 seq_printf(m, "\nFindFirst: %d FNext %d FClose %d",
647 atomic_read(&tcon->stats.cifs_stats.num_ffirst),
648 atomic_read(&tcon->stats.cifs_stats.num_fnext),
649 atomic_read(&tcon->stats.cifs_stats.num_fclose));
654 cifs_mkdir_setinfo(struct inode *inode, const char *full_path,
655 struct cifs_sb_info *cifs_sb, struct cifs_tcon *tcon,
656 const unsigned int xid)
658 FILE_BASIC_INFO info;
659 struct cifsInodeInfo *cifsInode;
663 memset(&info, 0, sizeof(info));
664 cifsInode = CIFS_I(inode);
665 dosattrs = cifsInode->cifsAttrs|ATTR_READONLY;
666 info.Attributes = cpu_to_le32(dosattrs);
667 rc = CIFSSMBSetPathInfo(xid, tcon, full_path, &info, cifs_sb->local_nls,
668 cifs_sb->mnt_cifs_flags &
669 CIFS_MOUNT_MAP_SPECIAL_CHR);
671 cifsInode->cifsAttrs = dosattrs;
675 cifs_open_file(const unsigned int xid, struct cifs_tcon *tcon, const char *path,
676 int disposition, int desired_access, int create_options,
677 struct cifs_fid *fid, __u32 *oplock, FILE_ALL_INFO *buf,
678 struct cifs_sb_info *cifs_sb)
680 if (!(tcon->ses->capabilities & CAP_NT_SMBS))
681 return SMBLegacyOpen(xid, tcon, path, disposition,
682 desired_access, create_options,
683 &fid->netfid, oplock, buf,
684 cifs_sb->local_nls, cifs_sb->mnt_cifs_flags
685 & CIFS_MOUNT_MAP_SPECIAL_CHR);
686 return CIFSSMBOpen(xid, tcon, path, disposition, desired_access,
687 create_options, &fid->netfid, oplock, buf,
688 cifs_sb->local_nls, cifs_sb->mnt_cifs_flags &
689 CIFS_MOUNT_MAP_SPECIAL_CHR);
693 cifs_set_fid(struct cifsFileInfo *cfile, struct cifs_fid *fid, __u32 oplock)
695 struct cifsInodeInfo *cinode = CIFS_I(cfile->dentry->d_inode);
696 cfile->fid.netfid = fid->netfid;
697 cifs_set_oplock_level(cinode, oplock);
698 cinode->can_cache_brlcks = cinode->clientCanCacheAll;
702 cifs_close_file(const unsigned int xid, struct cifs_tcon *tcon,
703 struct cifs_fid *fid)
705 CIFSSMBClose(xid, tcon, fid->netfid);
709 cifs_flush_file(const unsigned int xid, struct cifs_tcon *tcon,
710 struct cifs_fid *fid)
712 return CIFSSMBFlush(xid, tcon, fid->netfid);
716 cifs_sync_read(const unsigned int xid, struct cifsFileInfo *cfile,
717 struct cifs_io_parms *parms, unsigned int *bytes_read,
718 char **buf, int *buf_type)
720 parms->netfid = cfile->fid.netfid;
721 return CIFSSMBRead(xid, parms, bytes_read, buf, buf_type);
725 cifs_sync_write(const unsigned int xid, struct cifsFileInfo *cfile,
726 struct cifs_io_parms *parms, unsigned int *written,
727 struct kvec *iov, unsigned long nr_segs)
730 parms->netfid = cfile->fid.netfid;
731 return CIFSSMBWrite2(xid, parms, written, iov, nr_segs);
735 smb_set_file_info(struct inode *inode, const char *full_path,
736 FILE_BASIC_INFO *buf, const unsigned int xid)
742 struct cifsFileInfo *open_file;
743 struct cifsInodeInfo *cinode = CIFS_I(inode);
744 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
745 struct tcon_link *tlink = NULL;
746 struct cifs_tcon *tcon;
748 /* if the file is already open for write, just use that fileid */
749 open_file = find_writable_file(cinode, true);
751 netfid = open_file->fid.netfid;
752 netpid = open_file->pid;
753 tcon = tlink_tcon(open_file->tlink);
754 goto set_via_filehandle;
757 tlink = cifs_sb_tlink(cifs_sb);
763 tcon = tlink_tcon(tlink);
766 * NT4 apparently returns success on this call, but it doesn't really
769 if (!(tcon->ses->flags & CIFS_SES_NT4)) {
770 rc = CIFSSMBSetPathInfo(xid, tcon, full_path, buf,
772 cifs_sb->mnt_cifs_flags &
773 CIFS_MOUNT_MAP_SPECIAL_CHR);
775 cinode->cifsAttrs = le32_to_cpu(buf->Attributes);
777 } else if (rc != -EOPNOTSUPP && rc != -EINVAL)
781 cifs_dbg(FYI, "calling SetFileInfo since SetPathInfo for times not supported by this server\n");
782 rc = CIFSSMBOpen(xid, tcon, full_path, FILE_OPEN,
783 SYNCHRONIZE | FILE_WRITE_ATTRIBUTES, CREATE_NOT_DIR,
784 &netfid, &oplock, NULL, cifs_sb->local_nls,
785 cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
793 netpid = current->tgid;
796 rc = CIFSSMBSetFileInfo(xid, tcon, buf, netfid, netpid);
798 cinode->cifsAttrs = le32_to_cpu(buf->Attributes);
800 if (open_file == NULL)
801 CIFSSMBClose(xid, tcon, netfid);
803 cifsFileInfo_put(open_file);
806 cifs_put_tlink(tlink);
811 cifs_query_dir_first(const unsigned int xid, struct cifs_tcon *tcon,
812 const char *path, struct cifs_sb_info *cifs_sb,
813 struct cifs_fid *fid, __u16 search_flags,
814 struct cifs_search_info *srch_inf)
816 return CIFSFindFirst(xid, tcon, path, cifs_sb,
817 &fid->netfid, search_flags, srch_inf, true);
821 cifs_query_dir_next(const unsigned int xid, struct cifs_tcon *tcon,
822 struct cifs_fid *fid, __u16 search_flags,
823 struct cifs_search_info *srch_inf)
825 return CIFSFindNext(xid, tcon, fid->netfid, search_flags, srch_inf);
829 cifs_close_dir(const unsigned int xid, struct cifs_tcon *tcon,
830 struct cifs_fid *fid)
832 return CIFSFindClose(xid, tcon, fid->netfid);
836 cifs_oplock_response(struct cifs_tcon *tcon, struct cifs_fid *fid,
837 struct cifsInodeInfo *cinode)
839 return CIFSSMBLock(0, tcon, fid->netfid, current->tgid, 0, 0, 0, 0,
840 LOCKING_ANDX_OPLOCK_RELEASE, false,
841 cinode->clientCanCacheRead ? 1 : 0);
845 cifs_queryfs(const unsigned int xid, struct cifs_tcon *tcon,
848 int rc = -EOPNOTSUPP;
850 buf->f_type = CIFS_MAGIC_NUMBER;
853 * We could add a second check for a QFS Unix capability bit
855 if ((tcon->ses->capabilities & CAP_UNIX) &&
856 (CIFS_POSIX_EXTENSIONS & le64_to_cpu(tcon->fsUnixInfo.Capability)))
857 rc = CIFSSMBQFSPosixInfo(xid, tcon, buf);
860 * Only need to call the old QFSInfo if failed on newer one,
863 if (rc && (tcon->ses->capabilities & CAP_NT_SMBS))
864 rc = CIFSSMBQFSInfo(xid, tcon, buf);
867 * Some old Windows servers also do not support level 103, retry with
868 * older level one if old server failed the previous call or we
869 * bypassed it because we detected that this was an older LANMAN sess
872 rc = SMBOldQFSInfo(xid, tcon, buf);
877 cifs_mand_lock(const unsigned int xid, struct cifsFileInfo *cfile, __u64 offset,
878 __u64 length, __u32 type, int lock, int unlock, bool wait)
880 return CIFSSMBLock(xid, tlink_tcon(cfile->tlink), cfile->fid.netfid,
881 current->tgid, length, offset, unlock, lock,
882 (__u8)type, wait, 0);
885 struct smb_version_operations smb1_operations = {
886 .send_cancel = send_nt_cancel,
887 .compare_fids = cifs_compare_fids,
888 .setup_request = cifs_setup_request,
889 .setup_async_request = cifs_setup_async_request,
890 .check_receive = cifs_check_receive,
891 .add_credits = cifs_add_credits,
892 .set_credits = cifs_set_credits,
893 .get_credits_field = cifs_get_credits_field,
894 .get_credits = cifs_get_credits,
895 .get_next_mid = cifs_get_next_mid,
896 .read_data_offset = cifs_read_data_offset,
897 .read_data_length = cifs_read_data_length,
898 .map_error = map_smb_to_linux_error,
899 .find_mid = cifs_find_mid,
900 .check_message = checkSMB,
901 .dump_detail = cifs_dump_detail,
902 .clear_stats = cifs_clear_stats,
903 .print_stats = cifs_print_stats,
904 .is_oplock_break = is_valid_oplock_break,
905 .check_trans2 = cifs_check_trans2,
906 .need_neg = cifs_need_neg,
907 .negotiate = cifs_negotiate,
908 .negotiate_wsize = cifs_negotiate_wsize,
909 .negotiate_rsize = cifs_negotiate_rsize,
910 .sess_setup = CIFS_SessSetup,
911 .logoff = CIFSSMBLogoff,
912 .tree_connect = CIFSTCon,
913 .tree_disconnect = CIFSSMBTDis,
914 .get_dfs_refer = CIFSGetDFSRefer,
915 .qfs_tcon = cifs_qfs_tcon,
916 .is_path_accessible = cifs_is_path_accessible,
917 .query_path_info = cifs_query_path_info,
918 .query_file_info = cifs_query_file_info,
919 .get_srv_inum = cifs_get_srv_inum,
920 .set_path_size = CIFSSMBSetEOF,
921 .set_file_size = CIFSSMBSetFileSize,
922 .set_file_info = smb_set_file_info,
924 .mkdir = CIFSSMBMkDir,
925 .mkdir_setinfo = cifs_mkdir_setinfo,
926 .rmdir = CIFSSMBRmDir,
927 .unlink = CIFSSMBDelFile,
928 .rename_pending_delete = cifs_rename_pending_delete,
929 .rename = CIFSSMBRename,
930 .create_hardlink = CIFSCreateHardLink,
931 .open = cifs_open_file,
932 .set_fid = cifs_set_fid,
933 .close = cifs_close_file,
934 .flush = cifs_flush_file,
935 .async_readv = cifs_async_readv,
936 .async_writev = cifs_async_writev,
937 .sync_read = cifs_sync_read,
938 .sync_write = cifs_sync_write,
939 .query_dir_first = cifs_query_dir_first,
940 .query_dir_next = cifs_query_dir_next,
941 .close_dir = cifs_close_dir,
942 .calc_smb_size = smbCalcSize,
943 .oplock_response = cifs_oplock_response,
944 .queryfs = cifs_queryfs,
945 .mand_lock = cifs_mand_lock,
946 .mand_unlock_range = cifs_unlock_range,
947 .push_mand_locks = cifs_push_mandatory_locks,
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,