2 * SMB2 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>
22 #include <linux/falloc.h>
23 #include <linux/scatterlist.h>
24 #include <linux/uuid.h>
25 #include <crypto/aead.h>
28 #include "smb2proto.h"
29 #include "cifsproto.h"
30 #include "cifs_debug.h"
31 #include "cifs_unicode.h"
32 #include "smb2status.h"
34 #include "cifs_ioctl.h"
35 #include "smbdirect.h"
37 /* Change credits for different ops and return the total number of credits */
39 change_conf(struct TCP_Server_Info
*server
)
41 server
->credits
+= server
->echo_credits
+ server
->oplock_credits
;
42 server
->oplock_credits
= server
->echo_credits
= 0;
43 switch (server
->credits
) {
47 server
->echoes
= false;
48 server
->oplocks
= false;
51 server
->echoes
= true;
52 server
->oplocks
= false;
53 server
->echo_credits
= 1;
56 server
->echoes
= true;
58 server
->oplocks
= true;
59 server
->oplock_credits
= 1;
61 server
->oplocks
= false;
63 server
->echo_credits
= 1;
65 server
->credits
-= server
->echo_credits
+ server
->oplock_credits
;
66 return server
->credits
+ server
->echo_credits
+ server
->oplock_credits
;
70 smb2_add_credits(struct TCP_Server_Info
*server
,
71 const struct cifs_credits
*credits
, const int optype
)
74 unsigned int add
= credits
->value
;
75 unsigned int instance
= credits
->instance
;
76 bool reconnect_detected
= false;
78 spin_lock(&server
->req_lock
);
79 val
= server
->ops
->get_credits_field(server
, optype
);
81 /* eg found case where write overlapping reconnect messed up credits */
82 if (((optype
& CIFS_OP_MASK
) == CIFS_NEG_OP
) && (*val
!= 0))
83 trace_smb3_reconnect_with_invalid_credits(server
->CurrentMid
,
84 server
->hostname
, *val
);
85 if ((instance
== 0) || (instance
== server
->reconnect_instance
))
88 reconnect_detected
= true;
91 *val
= 65000; /* Don't get near 64K credits, avoid srv bugs */
92 printk_once(KERN_WARNING
"server overflowed SMB3 credits\n");
95 if (server
->in_flight
== 0 && (optype
& CIFS_OP_MASK
) != CIFS_NEG_OP
)
96 rc
= change_conf(server
);
98 * Sometimes server returns 0 credits on oplock break ack - we need to
99 * rebalance credits in this case.
101 else if (server
->in_flight
> 0 && server
->oplock_credits
== 0 &&
103 if (server
->credits
> 1) {
105 server
->oplock_credits
++;
108 spin_unlock(&server
->req_lock
);
109 wake_up(&server
->request_q
);
111 if (reconnect_detected
)
112 cifs_dbg(FYI
, "trying to put %d credits from the old server instance %d\n",
115 if (server
->tcpStatus
== CifsNeedReconnect
116 || server
->tcpStatus
== CifsExiting
)
121 /* change_conf hasn't been executed */
124 cifs_dbg(VFS
, "Possible client or server bug - zero credits\n");
127 cifs_dbg(VFS
, "disabling echoes and oplocks\n");
130 cifs_dbg(FYI
, "disabling oplocks\n");
133 cifs_dbg(FYI
, "add %u credits total=%d\n", add
, rc
);
138 smb2_set_credits(struct TCP_Server_Info
*server
, const int val
)
140 spin_lock(&server
->req_lock
);
141 server
->credits
= val
;
143 server
->reconnect_instance
++;
144 spin_unlock(&server
->req_lock
);
145 /* don't log while holding the lock */
147 cifs_dbg(FYI
, "set credits to 1 due to smb2 reconnect\n");
151 smb2_get_credits_field(struct TCP_Server_Info
*server
, const int optype
)
155 return &server
->echo_credits
;
157 return &server
->oplock_credits
;
159 return &server
->credits
;
164 smb2_get_credits(struct mid_q_entry
*mid
)
166 struct smb2_sync_hdr
*shdr
= (struct smb2_sync_hdr
*)mid
->resp_buf
;
168 if (mid
->mid_state
== MID_RESPONSE_RECEIVED
169 || mid
->mid_state
== MID_RESPONSE_MALFORMED
)
170 return le16_to_cpu(shdr
->CreditRequest
);
176 smb2_wait_mtu_credits(struct TCP_Server_Info
*server
, unsigned int size
,
177 unsigned int *num
, struct cifs_credits
*credits
)
180 unsigned int scredits
;
182 spin_lock(&server
->req_lock
);
184 if (server
->credits
<= 0) {
185 spin_unlock(&server
->req_lock
);
186 cifs_num_waiters_inc(server
);
187 rc
= wait_event_killable(server
->request_q
,
188 has_credits(server
, &server
->credits
, 1));
189 cifs_num_waiters_dec(server
);
192 spin_lock(&server
->req_lock
);
194 if (server
->tcpStatus
== CifsExiting
) {
195 spin_unlock(&server
->req_lock
);
199 scredits
= server
->credits
;
200 /* can deadlock with reopen */
202 *num
= SMB2_MAX_BUFFER_SIZE
;
204 credits
->instance
= 0;
208 /* leave some credits for reopen and other ops */
210 *num
= min_t(unsigned int, size
,
211 scredits
* SMB2_MAX_BUFFER_SIZE
);
214 DIV_ROUND_UP(*num
, SMB2_MAX_BUFFER_SIZE
);
215 credits
->instance
= server
->reconnect_instance
;
216 server
->credits
-= credits
->value
;
221 spin_unlock(&server
->req_lock
);
226 smb2_adjust_credits(struct TCP_Server_Info
*server
,
227 struct cifs_credits
*credits
,
228 const unsigned int payload_size
)
230 int new_val
= DIV_ROUND_UP(payload_size
, SMB2_MAX_BUFFER_SIZE
);
232 if (!credits
->value
|| credits
->value
== new_val
)
235 if (credits
->value
< new_val
) {
236 WARN_ONCE(1, "request has less credits (%d) than required (%d)",
237 credits
->value
, new_val
);
241 spin_lock(&server
->req_lock
);
243 if (server
->reconnect_instance
!= credits
->instance
) {
244 spin_unlock(&server
->req_lock
);
245 cifs_dbg(VFS
, "trying to return %d credits to old session\n",
246 credits
->value
- new_val
);
250 server
->credits
+= credits
->value
- new_val
;
251 spin_unlock(&server
->req_lock
);
252 wake_up(&server
->request_q
);
253 credits
->value
= new_val
;
258 smb2_get_next_mid(struct TCP_Server_Info
*server
)
261 /* for SMB2 we need the current value */
262 spin_lock(&GlobalMid_Lock
);
263 mid
= server
->CurrentMid
++;
264 spin_unlock(&GlobalMid_Lock
);
269 smb2_revert_current_mid(struct TCP_Server_Info
*server
, const unsigned int val
)
271 spin_lock(&GlobalMid_Lock
);
272 if (server
->CurrentMid
>= val
)
273 server
->CurrentMid
-= val
;
274 spin_unlock(&GlobalMid_Lock
);
277 static struct mid_q_entry
*
278 smb2_find_mid(struct TCP_Server_Info
*server
, char *buf
)
280 struct mid_q_entry
*mid
;
281 struct smb2_sync_hdr
*shdr
= (struct smb2_sync_hdr
*)buf
;
282 __u64 wire_mid
= le64_to_cpu(shdr
->MessageId
);
284 if (shdr
->ProtocolId
== SMB2_TRANSFORM_PROTO_NUM
) {
285 cifs_dbg(VFS
, "encrypted frame parsing not supported yet");
289 spin_lock(&GlobalMid_Lock
);
290 list_for_each_entry(mid
, &server
->pending_mid_q
, qhead
) {
291 if ((mid
->mid
== wire_mid
) &&
292 (mid
->mid_state
== MID_REQUEST_SUBMITTED
) &&
293 (mid
->command
== shdr
->Command
)) {
294 kref_get(&mid
->refcount
);
295 spin_unlock(&GlobalMid_Lock
);
299 spin_unlock(&GlobalMid_Lock
);
304 smb2_dump_detail(void *buf
, struct TCP_Server_Info
*server
)
306 #ifdef CONFIG_CIFS_DEBUG2
307 struct smb2_sync_hdr
*shdr
= (struct smb2_sync_hdr
*)buf
;
309 cifs_dbg(VFS
, "Cmd: %d Err: 0x%x Flags: 0x%x Mid: %llu Pid: %d\n",
310 shdr
->Command
, shdr
->Status
, shdr
->Flags
, shdr
->MessageId
,
312 cifs_dbg(VFS
, "smb buf %p len %u\n", buf
,
313 server
->ops
->calc_smb_size(buf
, server
));
318 smb2_need_neg(struct TCP_Server_Info
*server
)
320 return server
->max_read
== 0;
324 smb2_negotiate(const unsigned int xid
, struct cifs_ses
*ses
)
327 ses
->server
->CurrentMid
= 0;
328 rc
= SMB2_negotiate(xid
, ses
);
329 /* BB we probably don't need to retry with modern servers */
336 smb2_negotiate_wsize(struct cifs_tcon
*tcon
, struct smb_vol
*volume_info
)
338 struct TCP_Server_Info
*server
= tcon
->ses
->server
;
341 /* start with specified wsize, or default */
342 wsize
= volume_info
->wsize
? volume_info
->wsize
: CIFS_DEFAULT_IOSIZE
;
343 wsize
= min_t(unsigned int, wsize
, server
->max_write
);
344 #ifdef CONFIG_CIFS_SMB_DIRECT
347 wsize
= min_t(unsigned int,
348 wsize
, server
->smbd_conn
->max_fragmented_send_size
);
350 wsize
= min_t(unsigned int,
351 wsize
, server
->smbd_conn
->max_readwrite_size
);
354 if (!(server
->capabilities
& SMB2_GLOBAL_CAP_LARGE_MTU
))
355 wsize
= min_t(unsigned int, wsize
, SMB2_MAX_BUFFER_SIZE
);
361 smb3_negotiate_wsize(struct cifs_tcon
*tcon
, struct smb_vol
*volume_info
)
363 struct TCP_Server_Info
*server
= tcon
->ses
->server
;
366 /* start with specified wsize, or default */
367 wsize
= volume_info
->wsize
? volume_info
->wsize
: SMB3_DEFAULT_IOSIZE
;
368 wsize
= min_t(unsigned int, wsize
, server
->max_write
);
369 #ifdef CONFIG_CIFS_SMB_DIRECT
372 wsize
= min_t(unsigned int,
373 wsize
, server
->smbd_conn
->max_fragmented_send_size
);
375 wsize
= min_t(unsigned int,
376 wsize
, server
->smbd_conn
->max_readwrite_size
);
379 if (!(server
->capabilities
& SMB2_GLOBAL_CAP_LARGE_MTU
))
380 wsize
= min_t(unsigned int, wsize
, SMB2_MAX_BUFFER_SIZE
);
386 smb2_negotiate_rsize(struct cifs_tcon
*tcon
, struct smb_vol
*volume_info
)
388 struct TCP_Server_Info
*server
= tcon
->ses
->server
;
391 /* start with specified rsize, or default */
392 rsize
= volume_info
->rsize
? volume_info
->rsize
: CIFS_DEFAULT_IOSIZE
;
393 rsize
= min_t(unsigned int, rsize
, server
->max_read
);
394 #ifdef CONFIG_CIFS_SMB_DIRECT
397 rsize
= min_t(unsigned int,
398 rsize
, server
->smbd_conn
->max_fragmented_recv_size
);
400 rsize
= min_t(unsigned int,
401 rsize
, server
->smbd_conn
->max_readwrite_size
);
405 if (!(server
->capabilities
& SMB2_GLOBAL_CAP_LARGE_MTU
))
406 rsize
= min_t(unsigned int, rsize
, SMB2_MAX_BUFFER_SIZE
);
412 smb3_negotiate_rsize(struct cifs_tcon
*tcon
, struct smb_vol
*volume_info
)
414 struct TCP_Server_Info
*server
= tcon
->ses
->server
;
417 /* start with specified rsize, or default */
418 rsize
= volume_info
->rsize
? volume_info
->rsize
: SMB3_DEFAULT_IOSIZE
;
419 rsize
= min_t(unsigned int, rsize
, server
->max_read
);
420 #ifdef CONFIG_CIFS_SMB_DIRECT
423 rsize
= min_t(unsigned int,
424 rsize
, server
->smbd_conn
->max_fragmented_recv_size
);
426 rsize
= min_t(unsigned int,
427 rsize
, server
->smbd_conn
->max_readwrite_size
);
431 if (!(server
->capabilities
& SMB2_GLOBAL_CAP_LARGE_MTU
))
432 rsize
= min_t(unsigned int, rsize
, SMB2_MAX_BUFFER_SIZE
);
438 parse_server_interfaces(struct network_interface_info_ioctl_rsp
*buf
,
440 struct cifs_server_iface
**iface_list
,
443 struct network_interface_info_ioctl_rsp
*p
;
444 struct sockaddr_in
*addr4
;
445 struct sockaddr_in6
*addr6
;
446 struct iface_info_ipv4
*p4
;
447 struct iface_info_ipv6
*p6
;
448 struct cifs_server_iface
*info
;
458 * Fist pass: count and sanity check
461 bytes_left
= buf_len
;
463 while (bytes_left
>= sizeof(*p
)) {
465 next
= le32_to_cpu(p
->Next
);
467 bytes_left
-= sizeof(*p
);
470 p
= (struct network_interface_info_ioctl_rsp
*)((u8
*)p
+next
);
475 cifs_dbg(VFS
, "%s: malformed interface info\n", __func__
);
480 if (bytes_left
|| p
->Next
)
481 cifs_dbg(VFS
, "%s: incomplete interface info\n", __func__
);
485 * Second pass: extract info to internal structure
488 *iface_list
= kcalloc(nb_iface
, sizeof(**iface_list
), GFP_KERNEL
);
495 bytes_left
= buf_len
;
497 while (bytes_left
>= sizeof(*p
)) {
498 info
->speed
= le64_to_cpu(p
->LinkSpeed
);
499 info
->rdma_capable
= le32_to_cpu(p
->Capability
& RDMA_CAPABLE
);
500 info
->rss_capable
= le32_to_cpu(p
->Capability
& RSS_CAPABLE
);
502 cifs_dbg(FYI
, "%s: adding iface %zu\n", __func__
, *iface_count
);
503 cifs_dbg(FYI
, "%s: speed %zu bps\n", __func__
, info
->speed
);
504 cifs_dbg(FYI
, "%s: capabilities 0x%08x\n", __func__
,
505 le32_to_cpu(p
->Capability
));
509 * The kernel and wire socket structures have the same
510 * layout and use network byte order but make the
511 * conversion explicit in case either one changes.
514 addr4
= (struct sockaddr_in
*)&info
->sockaddr
;
515 p4
= (struct iface_info_ipv4
*)p
->Buffer
;
516 addr4
->sin_family
= AF_INET
;
517 memcpy(&addr4
->sin_addr
, &p4
->IPv4Address
, 4);
519 /* [MS-SMB2] 2.2.32.5.1.1 Clients MUST ignore these */
520 addr4
->sin_port
= cpu_to_be16(CIFS_PORT
);
522 cifs_dbg(FYI
, "%s: ipv4 %pI4\n", __func__
,
526 addr6
= (struct sockaddr_in6
*)&info
->sockaddr
;
527 p6
= (struct iface_info_ipv6
*)p
->Buffer
;
528 addr6
->sin6_family
= AF_INET6
;
529 memcpy(&addr6
->sin6_addr
, &p6
->IPv6Address
, 16);
531 /* [MS-SMB2] 2.2.32.5.1.2 Clients MUST ignore these */
532 addr6
->sin6_flowinfo
= 0;
533 addr6
->sin6_scope_id
= 0;
534 addr6
->sin6_port
= cpu_to_be16(CIFS_PORT
);
536 cifs_dbg(FYI
, "%s: ipv6 %pI6\n", __func__
,
541 "%s: skipping unsupported socket family\n",
549 next
= le32_to_cpu(p
->Next
);
552 p
= (struct network_interface_info_ioctl_rsp
*)((u8
*)p
+next
);
572 SMB3_request_interfaces(const unsigned int xid
, struct cifs_tcon
*tcon
)
575 unsigned int ret_data_len
= 0;
576 struct network_interface_info_ioctl_rsp
*out_buf
= NULL
;
577 struct cifs_server_iface
*iface_list
;
579 struct cifs_ses
*ses
= tcon
->ses
;
581 rc
= SMB2_ioctl(xid
, tcon
, NO_FILE_ID
, NO_FILE_ID
,
582 FSCTL_QUERY_NETWORK_INTERFACE_INFO
, true /* is_fsctl */,
583 NULL
/* no data input */, 0 /* no data input */,
584 (char **)&out_buf
, &ret_data_len
);
585 if (rc
== -EOPNOTSUPP
) {
587 "server does not support query network interfaces\n");
589 } else if (rc
!= 0) {
590 cifs_dbg(VFS
, "error %d on ioctl to get interface list\n", rc
);
594 rc
= parse_server_interfaces(out_buf
, ret_data_len
,
595 &iface_list
, &iface_count
);
599 spin_lock(&ses
->iface_lock
);
600 kfree(ses
->iface_list
);
601 ses
->iface_list
= iface_list
;
602 ses
->iface_count
= iface_count
;
603 ses
->iface_last_update
= jiffies
;
604 spin_unlock(&ses
->iface_lock
);
612 smb2_close_cached_fid(struct kref
*ref
)
614 struct cached_fid
*cfid
= container_of(ref
, struct cached_fid
,
617 if (cfid
->is_valid
) {
618 cifs_dbg(FYI
, "clear cached root file handle\n");
619 SMB2_close(0, cfid
->tcon
, cfid
->fid
->persistent_fid
,
620 cfid
->fid
->volatile_fid
);
621 cfid
->is_valid
= false;
622 cfid
->file_all_info_is_valid
= false;
626 void close_shroot(struct cached_fid
*cfid
)
628 mutex_lock(&cfid
->fid_mutex
);
629 kref_put(&cfid
->refcount
, smb2_close_cached_fid
);
630 mutex_unlock(&cfid
->fid_mutex
);
634 smb2_cached_lease_break(struct work_struct
*work
)
636 struct cached_fid
*cfid
= container_of(work
,
637 struct cached_fid
, lease_break
);
643 * Open the directory at the root of a share
645 int open_shroot(unsigned int xid
, struct cifs_tcon
*tcon
, struct cifs_fid
*pfid
)
647 struct cifs_ses
*ses
= tcon
->ses
;
648 struct TCP_Server_Info
*server
= ses
->server
;
649 struct cifs_open_parms oparms
;
650 struct smb2_create_rsp
*o_rsp
= NULL
;
651 struct smb2_query_info_rsp
*qi_rsp
= NULL
;
653 struct smb_rqst rqst
[2];
654 struct kvec rsp_iov
[2];
655 struct kvec open_iov
[SMB2_CREATE_IOV_SIZE
];
656 struct kvec qi_iov
[1];
658 __le16 utf16_path
= 0; /* Null - since an open of top of share */
659 u8 oplock
= SMB2_OPLOCK_LEVEL_II
;
661 mutex_lock(&tcon
->crfid
.fid_mutex
);
662 if (tcon
->crfid
.is_valid
) {
663 cifs_dbg(FYI
, "found a cached root file handle\n");
664 memcpy(pfid
, tcon
->crfid
.fid
, sizeof(struct cifs_fid
));
665 kref_get(&tcon
->crfid
.refcount
);
666 mutex_unlock(&tcon
->crfid
.fid_mutex
);
670 if (smb3_encryption_required(tcon
))
671 flags
|= CIFS_TRANSFORM_REQ
;
673 memset(rqst
, 0, sizeof(rqst
));
674 resp_buftype
[0] = resp_buftype
[1] = CIFS_NO_BUFFER
;
675 memset(rsp_iov
, 0, sizeof(rsp_iov
));
678 memset(&open_iov
, 0, sizeof(open_iov
));
679 rqst
[0].rq_iov
= open_iov
;
680 rqst
[0].rq_nvec
= SMB2_CREATE_IOV_SIZE
;
683 oparms
.create_options
= 0;
684 oparms
.desired_access
= FILE_READ_ATTRIBUTES
;
685 oparms
.disposition
= FILE_OPEN
;
687 oparms
.reconnect
= false;
689 rc
= SMB2_open_init(tcon
, &rqst
[0], &oplock
, &oparms
, &utf16_path
);
692 smb2_set_next_command(tcon
, &rqst
[0]);
694 memset(&qi_iov
, 0, sizeof(qi_iov
));
695 rqst
[1].rq_iov
= qi_iov
;
698 rc
= SMB2_query_info_init(tcon
, &rqst
[1], COMPOUND_FID
,
699 COMPOUND_FID
, FILE_ALL_INFORMATION
,
701 sizeof(struct smb2_file_all_info
) +
702 PATH_MAX
* 2, 0, NULL
);
706 smb2_set_related(&rqst
[1]);
708 rc
= compound_send_recv(xid
, ses
, flags
, 2, rqst
,
709 resp_buftype
, rsp_iov
);
713 o_rsp
= (struct smb2_create_rsp
*)rsp_iov
[0].iov_base
;
714 oparms
.fid
->persistent_fid
= o_rsp
->PersistentFileId
;
715 oparms
.fid
->volatile_fid
= o_rsp
->VolatileFileId
;
716 #ifdef CONFIG_CIFS_DEBUG2
717 oparms
.fid
->mid
= le64_to_cpu(o_rsp
->sync_hdr
.MessageId
);
718 #endif /* CIFS_DEBUG2 */
720 if (o_rsp
->OplockLevel
== SMB2_OPLOCK_LEVEL_LEASE
)
721 oplock
= smb2_parse_lease_state(server
, o_rsp
,
723 oparms
.fid
->lease_key
);
728 memcpy(tcon
->crfid
.fid
, pfid
, sizeof(struct cifs_fid
));
729 tcon
->crfid
.tcon
= tcon
;
730 tcon
->crfid
.is_valid
= true;
731 kref_init(&tcon
->crfid
.refcount
);
732 kref_get(&tcon
->crfid
.refcount
);
735 qi_rsp
= (struct smb2_query_info_rsp
*)rsp_iov
[1].iov_base
;
736 if (le32_to_cpu(qi_rsp
->OutputBufferLength
) < sizeof(struct smb2_file_all_info
))
738 rc
= smb2_validate_and_copy_iov(
739 le16_to_cpu(qi_rsp
->OutputBufferOffset
),
740 sizeof(struct smb2_file_all_info
),
741 &rsp_iov
[1], sizeof(struct smb2_file_all_info
),
742 (char *)&tcon
->crfid
.file_all_info
);
745 tcon
->crfid
.file_all_info_is_valid
= 1;
748 mutex_unlock(&tcon
->crfid
.fid_mutex
);
749 SMB2_open_free(&rqst
[0]);
750 SMB2_query_info_free(&rqst
[1]);
751 free_rsp_buf(resp_buftype
[0], rsp_iov
[0].iov_base
);
752 free_rsp_buf(resp_buftype
[1], rsp_iov
[1].iov_base
);
757 smb3_qfs_tcon(const unsigned int xid
, struct cifs_tcon
*tcon
)
760 __le16 srch_path
= 0; /* Null - open root of share */
761 u8 oplock
= SMB2_OPLOCK_LEVEL_NONE
;
762 struct cifs_open_parms oparms
;
764 bool no_cached_open
= tcon
->nohandlecache
;
767 oparms
.desired_access
= FILE_READ_ATTRIBUTES
;
768 oparms
.disposition
= FILE_OPEN
;
769 oparms
.create_options
= 0;
771 oparms
.reconnect
= false;
774 rc
= SMB2_open(xid
, &oparms
, &srch_path
, &oplock
, NULL
, NULL
,
777 rc
= open_shroot(xid
, tcon
, &fid
);
782 SMB3_request_interfaces(xid
, tcon
);
784 SMB2_QFS_attr(xid
, tcon
, fid
.persistent_fid
, fid
.volatile_fid
,
785 FS_ATTRIBUTE_INFORMATION
);
786 SMB2_QFS_attr(xid
, tcon
, fid
.persistent_fid
, fid
.volatile_fid
,
787 FS_DEVICE_INFORMATION
);
788 SMB2_QFS_attr(xid
, tcon
, fid
.persistent_fid
, fid
.volatile_fid
,
789 FS_VOLUME_INFORMATION
);
790 SMB2_QFS_attr(xid
, tcon
, fid
.persistent_fid
, fid
.volatile_fid
,
791 FS_SECTOR_SIZE_INFORMATION
); /* SMB3 specific */
793 SMB2_close(xid
, tcon
, fid
.persistent_fid
, fid
.volatile_fid
);
795 close_shroot(&tcon
->crfid
);
801 smb2_qfs_tcon(const unsigned int xid
, struct cifs_tcon
*tcon
)
804 __le16 srch_path
= 0; /* Null - open root of share */
805 u8 oplock
= SMB2_OPLOCK_LEVEL_NONE
;
806 struct cifs_open_parms oparms
;
810 oparms
.desired_access
= FILE_READ_ATTRIBUTES
;
811 oparms
.disposition
= FILE_OPEN
;
812 oparms
.create_options
= 0;
814 oparms
.reconnect
= false;
816 rc
= SMB2_open(xid
, &oparms
, &srch_path
, &oplock
, NULL
, NULL
, NULL
);
820 SMB2_QFS_attr(xid
, tcon
, fid
.persistent_fid
, fid
.volatile_fid
,
821 FS_ATTRIBUTE_INFORMATION
);
822 SMB2_QFS_attr(xid
, tcon
, fid
.persistent_fid
, fid
.volatile_fid
,
823 FS_DEVICE_INFORMATION
);
824 SMB2_close(xid
, tcon
, fid
.persistent_fid
, fid
.volatile_fid
);
829 smb2_is_path_accessible(const unsigned int xid
, struct cifs_tcon
*tcon
,
830 struct cifs_sb_info
*cifs_sb
, const char *full_path
)
834 __u8 oplock
= SMB2_OPLOCK_LEVEL_NONE
;
835 struct cifs_open_parms oparms
;
838 if ((*full_path
== 0) && tcon
->crfid
.is_valid
)
841 utf16_path
= cifs_convert_path_to_utf16(full_path
, cifs_sb
);
846 oparms
.desired_access
= FILE_READ_ATTRIBUTES
;
847 oparms
.disposition
= FILE_OPEN
;
848 if (backup_cred(cifs_sb
))
849 oparms
.create_options
= CREATE_OPEN_BACKUP_INTENT
;
851 oparms
.create_options
= 0;
853 oparms
.reconnect
= false;
855 rc
= SMB2_open(xid
, &oparms
, utf16_path
, &oplock
, NULL
, NULL
, NULL
);
861 rc
= SMB2_close(xid
, tcon
, fid
.persistent_fid
, fid
.volatile_fid
);
867 smb2_get_srv_inum(const unsigned int xid
, struct cifs_tcon
*tcon
,
868 struct cifs_sb_info
*cifs_sb
, const char *full_path
,
869 u64
*uniqueid
, FILE_ALL_INFO
*data
)
871 *uniqueid
= le64_to_cpu(data
->IndexNumber
);
876 smb2_query_file_info(const unsigned int xid
, struct cifs_tcon
*tcon
,
877 struct cifs_fid
*fid
, FILE_ALL_INFO
*data
)
880 struct smb2_file_all_info
*smb2_data
;
882 smb2_data
= kzalloc(sizeof(struct smb2_file_all_info
) + PATH_MAX
* 2,
884 if (smb2_data
== NULL
)
887 rc
= SMB2_query_info(xid
, tcon
, fid
->persistent_fid
, fid
->volatile_fid
,
890 move_smb2_info_to_cifs(data
, smb2_data
);
895 #ifdef CONFIG_CIFS_XATTR
897 move_smb2_ea_to_cifs(char *dst
, size_t dst_size
,
898 struct smb2_file_full_ea_info
*src
, size_t src_size
,
899 const unsigned char *ea_name
)
902 unsigned int ea_name_len
= ea_name
? strlen(ea_name
) : 0;
904 size_t buf_size
= dst_size
;
905 size_t name_len
, value_len
, user_name_len
;
907 while (src_size
> 0) {
908 name
= &src
->ea_data
[0];
909 name_len
= (size_t)src
->ea_name_length
;
910 value
= &src
->ea_data
[src
->ea_name_length
+ 1];
911 value_len
= (size_t)le16_to_cpu(src
->ea_value_length
);
917 if (src_size
< 8 + name_len
+ 1 + value_len
) {
918 cifs_dbg(FYI
, "EA entry goes beyond length of list\n");
924 if (ea_name_len
== name_len
&&
925 memcmp(ea_name
, name
, name_len
) == 0) {
929 if (dst_size
< value_len
) {
933 memcpy(dst
, value
, value_len
);
937 /* 'user.' plus a terminating null */
938 user_name_len
= 5 + 1 + name_len
;
941 /* skip copy - calc size only */
943 } else if (dst_size
>= user_name_len
) {
944 dst_size
-= user_name_len
;
945 memcpy(dst
, "user.", 5);
947 memcpy(dst
, src
->ea_data
, name_len
);
953 /* stop before overrun buffer */
959 if (!src
->next_entry_offset
)
962 if (src_size
< le32_to_cpu(src
->next_entry_offset
)) {
963 /* stop before overrun buffer */
967 src_size
-= le32_to_cpu(src
->next_entry_offset
);
968 src
= (void *)((char *)src
+
969 le32_to_cpu(src
->next_entry_offset
));
972 /* didn't find the named attribute */
981 smb2_query_eas(const unsigned int xid
, struct cifs_tcon
*tcon
,
982 const unsigned char *path
, const unsigned char *ea_name
,
983 char *ea_data
, size_t buf_size
,
984 struct cifs_sb_info
*cifs_sb
)
988 struct kvec rsp_iov
= {NULL
, 0};
989 int buftype
= CIFS_NO_BUFFER
;
990 struct smb2_query_info_rsp
*rsp
;
991 struct smb2_file_full_ea_info
*info
= NULL
;
993 utf16_path
= cifs_convert_path_to_utf16(path
, cifs_sb
);
997 rc
= smb2_query_info_compound(xid
, tcon
, utf16_path
,
999 FILE_FULL_EA_INFORMATION
,
1002 MAX_SMB2_CREATE_RESPONSE_SIZE
-
1003 MAX_SMB2_CLOSE_RESPONSE_SIZE
,
1004 &rsp_iov
, &buftype
, cifs_sb
);
1007 * If ea_name is NULL (listxattr) and there are no EAs,
1008 * return 0 as it's not an error. Otherwise, the specified
1009 * ea_name was not found.
1011 if (!ea_name
&& rc
== -ENODATA
)
1016 rsp
= (struct smb2_query_info_rsp
*)rsp_iov
.iov_base
;
1017 rc
= smb2_validate_iov(le16_to_cpu(rsp
->OutputBufferOffset
),
1018 le32_to_cpu(rsp
->OutputBufferLength
),
1020 sizeof(struct smb2_file_full_ea_info
));
1024 info
= (struct smb2_file_full_ea_info
*)(
1025 le16_to_cpu(rsp
->OutputBufferOffset
) + (char *)rsp
);
1026 rc
= move_smb2_ea_to_cifs(ea_data
, buf_size
, info
,
1027 le32_to_cpu(rsp
->OutputBufferLength
), ea_name
);
1031 free_rsp_buf(buftype
, rsp_iov
.iov_base
);
1037 smb2_set_ea(const unsigned int xid
, struct cifs_tcon
*tcon
,
1038 const char *path
, const char *ea_name
, const void *ea_value
,
1039 const __u16 ea_value_len
, const struct nls_table
*nls_codepage
,
1040 struct cifs_sb_info
*cifs_sb
)
1042 struct cifs_ses
*ses
= tcon
->ses
;
1043 __le16
*utf16_path
= NULL
;
1044 int ea_name_len
= strlen(ea_name
);
1047 struct smb_rqst rqst
[3];
1048 int resp_buftype
[3];
1049 struct kvec rsp_iov
[3];
1050 struct kvec open_iov
[SMB2_CREATE_IOV_SIZE
];
1051 struct cifs_open_parms oparms
;
1052 __u8 oplock
= SMB2_OPLOCK_LEVEL_NONE
;
1053 struct cifs_fid fid
;
1054 struct kvec si_iov
[SMB2_SET_INFO_IOV_SIZE
];
1055 unsigned int size
[1];
1057 struct smb2_file_full_ea_info
*ea
= NULL
;
1058 struct kvec close_iov
[1];
1061 if (smb3_encryption_required(tcon
))
1062 flags
|= CIFS_TRANSFORM_REQ
;
1064 if (ea_name_len
> 255)
1067 utf16_path
= cifs_convert_path_to_utf16(path
, cifs_sb
);
1071 memset(rqst
, 0, sizeof(rqst
));
1072 resp_buftype
[0] = resp_buftype
[1] = resp_buftype
[2] = CIFS_NO_BUFFER
;
1073 memset(rsp_iov
, 0, sizeof(rsp_iov
));
1075 if (ses
->server
->ops
->query_all_EAs
) {
1077 rc
= ses
->server
->ops
->query_all_EAs(xid
, tcon
, path
,
1086 memset(&open_iov
, 0, sizeof(open_iov
));
1087 rqst
[0].rq_iov
= open_iov
;
1088 rqst
[0].rq_nvec
= SMB2_CREATE_IOV_SIZE
;
1090 memset(&oparms
, 0, sizeof(oparms
));
1092 oparms
.desired_access
= FILE_WRITE_EA
;
1093 oparms
.disposition
= FILE_OPEN
;
1094 if (backup_cred(cifs_sb
))
1095 oparms
.create_options
= CREATE_OPEN_BACKUP_INTENT
;
1097 oparms
.create_options
= 0;
1099 oparms
.reconnect
= false;
1101 rc
= SMB2_open_init(tcon
, &rqst
[0], &oplock
, &oparms
, utf16_path
);
1104 smb2_set_next_command(tcon
, &rqst
[0]);
1108 memset(&si_iov
, 0, sizeof(si_iov
));
1109 rqst
[1].rq_iov
= si_iov
;
1110 rqst
[1].rq_nvec
= 1;
1112 len
= sizeof(ea
) + ea_name_len
+ ea_value_len
+ 1;
1113 ea
= kzalloc(len
, GFP_KERNEL
);
1119 ea
->ea_name_length
= ea_name_len
;
1120 ea
->ea_value_length
= cpu_to_le16(ea_value_len
);
1121 memcpy(ea
->ea_data
, ea_name
, ea_name_len
+ 1);
1122 memcpy(ea
->ea_data
+ ea_name_len
+ 1, ea_value
, ea_value_len
);
1127 rc
= SMB2_set_info_init(tcon
, &rqst
[1], COMPOUND_FID
,
1128 COMPOUND_FID
, current
->tgid
,
1129 FILE_FULL_EA_INFORMATION
,
1130 SMB2_O_INFO_FILE
, 0, data
, size
);
1131 smb2_set_next_command(tcon
, &rqst
[1]);
1132 smb2_set_related(&rqst
[1]);
1136 memset(&close_iov
, 0, sizeof(close_iov
));
1137 rqst
[2].rq_iov
= close_iov
;
1138 rqst
[2].rq_nvec
= 1;
1139 rc
= SMB2_close_init(tcon
, &rqst
[2], COMPOUND_FID
, COMPOUND_FID
);
1140 smb2_set_related(&rqst
[2]);
1142 rc
= compound_send_recv(xid
, ses
, flags
, 3, rqst
,
1143 resp_buftype
, rsp_iov
);
1148 SMB2_open_free(&rqst
[0]);
1149 SMB2_set_info_free(&rqst
[1]);
1150 SMB2_close_free(&rqst
[2]);
1151 free_rsp_buf(resp_buftype
[0], rsp_iov
[0].iov_base
);
1152 free_rsp_buf(resp_buftype
[1], rsp_iov
[1].iov_base
);
1153 free_rsp_buf(resp_buftype
[2], rsp_iov
[2].iov_base
);
1159 smb2_can_echo(struct TCP_Server_Info
*server
)
1161 return server
->echoes
;
1165 smb2_clear_stats(struct cifs_tcon
*tcon
)
1168 for (i
= 0; i
< NUMBER_OF_SMB2_COMMANDS
; i
++) {
1169 atomic_set(&tcon
->stats
.smb2_stats
.smb2_com_sent
[i
], 0);
1170 atomic_set(&tcon
->stats
.smb2_stats
.smb2_com_failed
[i
], 0);
1175 smb2_dump_share_caps(struct seq_file
*m
, struct cifs_tcon
*tcon
)
1177 seq_puts(m
, "\n\tShare Capabilities:");
1178 if (tcon
->capabilities
& SMB2_SHARE_CAP_DFS
)
1179 seq_puts(m
, " DFS,");
1180 if (tcon
->capabilities
& SMB2_SHARE_CAP_CONTINUOUS_AVAILABILITY
)
1181 seq_puts(m
, " CONTINUOUS AVAILABILITY,");
1182 if (tcon
->capabilities
& SMB2_SHARE_CAP_SCALEOUT
)
1183 seq_puts(m
, " SCALEOUT,");
1184 if (tcon
->capabilities
& SMB2_SHARE_CAP_CLUSTER
)
1185 seq_puts(m
, " CLUSTER,");
1186 if (tcon
->capabilities
& SMB2_SHARE_CAP_ASYMMETRIC
)
1187 seq_puts(m
, " ASYMMETRIC,");
1188 if (tcon
->capabilities
== 0)
1189 seq_puts(m
, " None");
1190 if (tcon
->ss_flags
& SSINFO_FLAGS_ALIGNED_DEVICE
)
1191 seq_puts(m
, " Aligned,");
1192 if (tcon
->ss_flags
& SSINFO_FLAGS_PARTITION_ALIGNED_ON_DEVICE
)
1193 seq_puts(m
, " Partition Aligned,");
1194 if (tcon
->ss_flags
& SSINFO_FLAGS_NO_SEEK_PENALTY
)
1195 seq_puts(m
, " SSD,");
1196 if (tcon
->ss_flags
& SSINFO_FLAGS_TRIM_ENABLED
)
1197 seq_puts(m
, " TRIM-support,");
1199 seq_printf(m
, "\tShare Flags: 0x%x", tcon
->share_flags
);
1200 seq_printf(m
, "\n\ttid: 0x%x", tcon
->tid
);
1201 if (tcon
->perf_sector_size
)
1202 seq_printf(m
, "\tOptimal sector size: 0x%x",
1203 tcon
->perf_sector_size
);
1204 seq_printf(m
, "\tMaximal Access: 0x%x", tcon
->maximal_access
);
1208 smb2_print_stats(struct seq_file
*m
, struct cifs_tcon
*tcon
)
1210 atomic_t
*sent
= tcon
->stats
.smb2_stats
.smb2_com_sent
;
1211 atomic_t
*failed
= tcon
->stats
.smb2_stats
.smb2_com_failed
;
1214 * Can't display SMB2_NEGOTIATE, SESSION_SETUP, LOGOFF, CANCEL and ECHO
1215 * totals (requests sent) since those SMBs are per-session not per tcon
1217 seq_printf(m
, "\nBytes read: %llu Bytes written: %llu",
1218 (long long)(tcon
->bytes_read
),
1219 (long long)(tcon
->bytes_written
));
1220 seq_printf(m
, "\nOpen files: %d total (local), %d open on server",
1221 atomic_read(&tcon
->num_local_opens
),
1222 atomic_read(&tcon
->num_remote_opens
));
1223 seq_printf(m
, "\nTreeConnects: %d total %d failed",
1224 atomic_read(&sent
[SMB2_TREE_CONNECT_HE
]),
1225 atomic_read(&failed
[SMB2_TREE_CONNECT_HE
]));
1226 seq_printf(m
, "\nTreeDisconnects: %d total %d failed",
1227 atomic_read(&sent
[SMB2_TREE_DISCONNECT_HE
]),
1228 atomic_read(&failed
[SMB2_TREE_DISCONNECT_HE
]));
1229 seq_printf(m
, "\nCreates: %d total %d failed",
1230 atomic_read(&sent
[SMB2_CREATE_HE
]),
1231 atomic_read(&failed
[SMB2_CREATE_HE
]));
1232 seq_printf(m
, "\nCloses: %d total %d failed",
1233 atomic_read(&sent
[SMB2_CLOSE_HE
]),
1234 atomic_read(&failed
[SMB2_CLOSE_HE
]));
1235 seq_printf(m
, "\nFlushes: %d total %d failed",
1236 atomic_read(&sent
[SMB2_FLUSH_HE
]),
1237 atomic_read(&failed
[SMB2_FLUSH_HE
]));
1238 seq_printf(m
, "\nReads: %d total %d failed",
1239 atomic_read(&sent
[SMB2_READ_HE
]),
1240 atomic_read(&failed
[SMB2_READ_HE
]));
1241 seq_printf(m
, "\nWrites: %d total %d failed",
1242 atomic_read(&sent
[SMB2_WRITE_HE
]),
1243 atomic_read(&failed
[SMB2_WRITE_HE
]));
1244 seq_printf(m
, "\nLocks: %d total %d failed",
1245 atomic_read(&sent
[SMB2_LOCK_HE
]),
1246 atomic_read(&failed
[SMB2_LOCK_HE
]));
1247 seq_printf(m
, "\nIOCTLs: %d total %d failed",
1248 atomic_read(&sent
[SMB2_IOCTL_HE
]),
1249 atomic_read(&failed
[SMB2_IOCTL_HE
]));
1250 seq_printf(m
, "\nQueryDirectories: %d total %d failed",
1251 atomic_read(&sent
[SMB2_QUERY_DIRECTORY_HE
]),
1252 atomic_read(&failed
[SMB2_QUERY_DIRECTORY_HE
]));
1253 seq_printf(m
, "\nChangeNotifies: %d total %d failed",
1254 atomic_read(&sent
[SMB2_CHANGE_NOTIFY_HE
]),
1255 atomic_read(&failed
[SMB2_CHANGE_NOTIFY_HE
]));
1256 seq_printf(m
, "\nQueryInfos: %d total %d failed",
1257 atomic_read(&sent
[SMB2_QUERY_INFO_HE
]),
1258 atomic_read(&failed
[SMB2_QUERY_INFO_HE
]));
1259 seq_printf(m
, "\nSetInfos: %d total %d failed",
1260 atomic_read(&sent
[SMB2_SET_INFO_HE
]),
1261 atomic_read(&failed
[SMB2_SET_INFO_HE
]));
1262 seq_printf(m
, "\nOplockBreaks: %d sent %d failed",
1263 atomic_read(&sent
[SMB2_OPLOCK_BREAK_HE
]),
1264 atomic_read(&failed
[SMB2_OPLOCK_BREAK_HE
]));
1268 smb2_set_fid(struct cifsFileInfo
*cfile
, struct cifs_fid
*fid
, __u32 oplock
)
1270 struct cifsInodeInfo
*cinode
= CIFS_I(d_inode(cfile
->dentry
));
1271 struct TCP_Server_Info
*server
= tlink_tcon(cfile
->tlink
)->ses
->server
;
1273 cfile
->fid
.persistent_fid
= fid
->persistent_fid
;
1274 cfile
->fid
.volatile_fid
= fid
->volatile_fid
;
1275 #ifdef CONFIG_CIFS_DEBUG2
1276 cfile
->fid
.mid
= fid
->mid
;
1277 #endif /* CIFS_DEBUG2 */
1278 server
->ops
->set_oplock_level(cinode
, oplock
, fid
->epoch
,
1280 cinode
->can_cache_brlcks
= CIFS_CACHE_WRITE(cinode
);
1281 memcpy(cfile
->fid
.create_guid
, fid
->create_guid
, 16);
1285 smb2_close_file(const unsigned int xid
, struct cifs_tcon
*tcon
,
1286 struct cifs_fid
*fid
)
1288 SMB2_close(xid
, tcon
, fid
->persistent_fid
, fid
->volatile_fid
);
1292 SMB2_request_res_key(const unsigned int xid
, struct cifs_tcon
*tcon
,
1293 u64 persistent_fid
, u64 volatile_fid
,
1294 struct copychunk_ioctl
*pcchunk
)
1297 unsigned int ret_data_len
;
1298 struct resume_key_req
*res_key
;
1300 rc
= SMB2_ioctl(xid
, tcon
, persistent_fid
, volatile_fid
,
1301 FSCTL_SRV_REQUEST_RESUME_KEY
, true /* is_fsctl */,
1302 NULL
, 0 /* no input */,
1303 (char **)&res_key
, &ret_data_len
);
1306 cifs_dbg(VFS
, "refcpy ioctl error %d getting resume key\n", rc
);
1307 goto req_res_key_exit
;
1309 if (ret_data_len
< sizeof(struct resume_key_req
)) {
1310 cifs_dbg(VFS
, "Invalid refcopy resume key length\n");
1312 goto req_res_key_exit
;
1314 memcpy(pcchunk
->SourceKey
, res_key
->ResumeKey
, COPY_CHUNK_RES_KEY_SIZE
);
1322 smb2_ioctl_query_info(const unsigned int xid
,
1323 struct cifs_tcon
*tcon
,
1324 __le16
*path
, int is_dir
,
1327 struct cifs_ses
*ses
= tcon
->ses
;
1328 char __user
*arg
= (char __user
*)p
;
1329 struct smb_query_info qi
;
1330 struct smb_query_info __user
*pqi
;
1333 struct smb2_query_info_rsp
*qi_rsp
= NULL
;
1334 struct smb2_ioctl_rsp
*io_rsp
= NULL
;
1335 void *buffer
= NULL
;
1336 struct smb_rqst rqst
[3];
1337 int resp_buftype
[3];
1338 struct kvec rsp_iov
[3];
1339 struct kvec open_iov
[SMB2_CREATE_IOV_SIZE
];
1340 struct cifs_open_parms oparms
;
1341 u8 oplock
= SMB2_OPLOCK_LEVEL_NONE
;
1342 struct cifs_fid fid
;
1343 struct kvec qi_iov
[1];
1344 struct kvec io_iov
[SMB2_IOCTL_IOV_SIZE
];
1345 struct kvec close_iov
[1];
1347 memset(rqst
, 0, sizeof(rqst
));
1348 resp_buftype
[0] = resp_buftype
[1] = resp_buftype
[2] = CIFS_NO_BUFFER
;
1349 memset(rsp_iov
, 0, sizeof(rsp_iov
));
1351 if (copy_from_user(&qi
, arg
, sizeof(struct smb_query_info
)))
1354 if (qi
.output_buffer_length
> 1024)
1357 if (!ses
|| !(ses
->server
))
1360 if (smb3_encryption_required(tcon
))
1361 flags
|= CIFS_TRANSFORM_REQ
;
1363 buffer
= kmalloc(qi
.output_buffer_length
, GFP_KERNEL
);
1367 if (copy_from_user(buffer
, arg
+ sizeof(struct smb_query_info
),
1368 qi
.output_buffer_length
)) {
1374 memset(&open_iov
, 0, sizeof(open_iov
));
1375 rqst
[0].rq_iov
= open_iov
;
1376 rqst
[0].rq_nvec
= SMB2_CREATE_IOV_SIZE
;
1378 memset(&oparms
, 0, sizeof(oparms
));
1380 oparms
.desired_access
= FILE_READ_ATTRIBUTES
| READ_CONTROL
;
1381 oparms
.disposition
= FILE_OPEN
;
1383 oparms
.create_options
= CREATE_NOT_FILE
;
1385 oparms
.create_options
= CREATE_NOT_DIR
;
1387 oparms
.reconnect
= false;
1389 rc
= SMB2_open_init(tcon
, &rqst
[0], &oplock
, &oparms
, path
);
1392 smb2_set_next_command(tcon
, &rqst
[0]);
1395 if (qi
.flags
& PASSTHRU_FSCTL
) {
1396 /* Can eventually relax perm check since server enforces too */
1397 if (!capable(CAP_SYS_ADMIN
))
1400 memset(&io_iov
, 0, sizeof(io_iov
));
1401 rqst
[1].rq_iov
= io_iov
;
1402 rqst
[1].rq_nvec
= SMB2_IOCTL_IOV_SIZE
;
1404 rc
= SMB2_ioctl_init(tcon
, &rqst
[1],
1405 COMPOUND_FID
, COMPOUND_FID
,
1406 qi
.info_type
, true, NULL
,
1409 } else if (qi
.flags
== PASSTHRU_QUERY_INFO
) {
1410 memset(&qi_iov
, 0, sizeof(qi_iov
));
1411 rqst
[1].rq_iov
= qi_iov
;
1412 rqst
[1].rq_nvec
= 1;
1414 rc
= SMB2_query_info_init(tcon
, &rqst
[1], COMPOUND_FID
,
1415 COMPOUND_FID
, qi
.file_info_class
,
1416 qi
.info_type
, qi
.additional_information
,
1417 qi
.input_buffer_length
,
1418 qi
.output_buffer_length
, buffer
);
1419 } else { /* unknown flags */
1420 cifs_dbg(VFS
, "invalid passthru query flags: 0x%x\n", qi
.flags
);
1426 smb2_set_next_command(tcon
, &rqst
[1]);
1427 smb2_set_related(&rqst
[1]);
1430 memset(&close_iov
, 0, sizeof(close_iov
));
1431 rqst
[2].rq_iov
= close_iov
;
1432 rqst
[2].rq_nvec
= 1;
1434 rc
= SMB2_close_init(tcon
, &rqst
[2], COMPOUND_FID
, COMPOUND_FID
);
1437 smb2_set_related(&rqst
[2]);
1439 rc
= compound_send_recv(xid
, ses
, flags
, 3, rqst
,
1440 resp_buftype
, rsp_iov
);
1443 if (qi
.flags
& PASSTHRU_FSCTL
) {
1444 pqi
= (struct smb_query_info __user
*)arg
;
1445 io_rsp
= (struct smb2_ioctl_rsp
*)rsp_iov
[1].iov_base
;
1446 if (le32_to_cpu(io_rsp
->OutputCount
) < qi
.input_buffer_length
)
1447 qi
.input_buffer_length
= le32_to_cpu(io_rsp
->OutputCount
);
1448 if (copy_to_user(&pqi
->input_buffer_length
, &qi
.input_buffer_length
,
1449 sizeof(qi
.input_buffer_length
))) {
1453 if (copy_to_user(pqi
+ 1, &io_rsp
[1], qi
.input_buffer_length
)) {
1458 pqi
= (struct smb_query_info __user
*)arg
;
1459 qi_rsp
= (struct smb2_query_info_rsp
*)rsp_iov
[1].iov_base
;
1460 if (le32_to_cpu(qi_rsp
->OutputBufferLength
) < qi
.input_buffer_length
)
1461 qi
.input_buffer_length
= le32_to_cpu(qi_rsp
->OutputBufferLength
);
1462 if (copy_to_user(&pqi
->input_buffer_length
, &qi
.input_buffer_length
,
1463 sizeof(qi
.input_buffer_length
))) {
1467 if (copy_to_user(pqi
+ 1, qi_rsp
->Buffer
, qi
.input_buffer_length
)) {
1475 SMB2_open_free(&rqst
[0]);
1476 if (qi
.flags
& PASSTHRU_FSCTL
)
1477 SMB2_ioctl_free(&rqst
[1]);
1479 SMB2_query_info_free(&rqst
[1]);
1481 SMB2_close_free(&rqst
[2]);
1482 free_rsp_buf(resp_buftype
[0], rsp_iov
[0].iov_base
);
1483 free_rsp_buf(resp_buftype
[1], rsp_iov
[1].iov_base
);
1484 free_rsp_buf(resp_buftype
[2], rsp_iov
[2].iov_base
);
1489 smb2_copychunk_range(const unsigned int xid
,
1490 struct cifsFileInfo
*srcfile
,
1491 struct cifsFileInfo
*trgtfile
, u64 src_off
,
1492 u64 len
, u64 dest_off
)
1495 unsigned int ret_data_len
;
1496 struct copychunk_ioctl
*pcchunk
;
1497 struct copychunk_ioctl_rsp
*retbuf
= NULL
;
1498 struct cifs_tcon
*tcon
;
1499 int chunks_copied
= 0;
1500 bool chunk_sizes_updated
= false;
1501 ssize_t bytes_written
, total_bytes_written
= 0;
1503 pcchunk
= kmalloc(sizeof(struct copychunk_ioctl
), GFP_KERNEL
);
1505 if (pcchunk
== NULL
)
1508 cifs_dbg(FYI
, "in smb2_copychunk_range - about to call request res key\n");
1509 /* Request a key from the server to identify the source of the copy */
1510 rc
= SMB2_request_res_key(xid
, tlink_tcon(srcfile
->tlink
),
1511 srcfile
->fid
.persistent_fid
,
1512 srcfile
->fid
.volatile_fid
, pcchunk
);
1514 /* Note: request_res_key sets res_key null only if rc !=0 */
1518 /* For now array only one chunk long, will make more flexible later */
1519 pcchunk
->ChunkCount
= cpu_to_le32(1);
1520 pcchunk
->Reserved
= 0;
1521 pcchunk
->Reserved2
= 0;
1523 tcon
= tlink_tcon(trgtfile
->tlink
);
1526 pcchunk
->SourceOffset
= cpu_to_le64(src_off
);
1527 pcchunk
->TargetOffset
= cpu_to_le64(dest_off
);
1529 cpu_to_le32(min_t(u32
, len
, tcon
->max_bytes_chunk
));
1531 /* Request server copy to target from src identified by key */
1532 rc
= SMB2_ioctl(xid
, tcon
, trgtfile
->fid
.persistent_fid
,
1533 trgtfile
->fid
.volatile_fid
, FSCTL_SRV_COPYCHUNK_WRITE
,
1534 true /* is_fsctl */, (char *)pcchunk
,
1535 sizeof(struct copychunk_ioctl
), (char **)&retbuf
,
1539 sizeof(struct copychunk_ioctl_rsp
)) {
1540 cifs_dbg(VFS
, "invalid cchunk response size\n");
1544 if (retbuf
->TotalBytesWritten
== 0) {
1545 cifs_dbg(FYI
, "no bytes copied\n");
1550 * Check if server claimed to write more than we asked
1552 if (le32_to_cpu(retbuf
->TotalBytesWritten
) >
1553 le32_to_cpu(pcchunk
->Length
)) {
1554 cifs_dbg(VFS
, "invalid copy chunk response\n");
1558 if (le32_to_cpu(retbuf
->ChunksWritten
) != 1) {
1559 cifs_dbg(VFS
, "invalid num chunks written\n");
1565 bytes_written
= le32_to_cpu(retbuf
->TotalBytesWritten
);
1566 src_off
+= bytes_written
;
1567 dest_off
+= bytes_written
;
1568 len
-= bytes_written
;
1569 total_bytes_written
+= bytes_written
;
1571 cifs_dbg(FYI
, "Chunks %d PartialChunk %d Total %zu\n",
1572 le32_to_cpu(retbuf
->ChunksWritten
),
1573 le32_to_cpu(retbuf
->ChunkBytesWritten
),
1575 } else if (rc
== -EINVAL
) {
1576 if (ret_data_len
!= sizeof(struct copychunk_ioctl_rsp
))
1579 cifs_dbg(FYI
, "MaxChunks %d BytesChunk %d MaxCopy %d\n",
1580 le32_to_cpu(retbuf
->ChunksWritten
),
1581 le32_to_cpu(retbuf
->ChunkBytesWritten
),
1582 le32_to_cpu(retbuf
->TotalBytesWritten
));
1585 * Check if this is the first request using these sizes,
1586 * (ie check if copy succeed once with original sizes
1587 * and check if the server gave us different sizes after
1588 * we already updated max sizes on previous request).
1589 * if not then why is the server returning an error now
1591 if ((chunks_copied
!= 0) || chunk_sizes_updated
)
1594 /* Check that server is not asking us to grow size */
1595 if (le32_to_cpu(retbuf
->ChunkBytesWritten
) <
1596 tcon
->max_bytes_chunk
)
1597 tcon
->max_bytes_chunk
=
1598 le32_to_cpu(retbuf
->ChunkBytesWritten
);
1600 goto cchunk_out
; /* server gave us bogus size */
1602 /* No need to change MaxChunks since already set to 1 */
1603 chunk_sizes_updated
= true;
1614 return total_bytes_written
;
1618 smb2_flush_file(const unsigned int xid
, struct cifs_tcon
*tcon
,
1619 struct cifs_fid
*fid
)
1621 return SMB2_flush(xid
, tcon
, fid
->persistent_fid
, fid
->volatile_fid
);
1625 smb2_read_data_offset(char *buf
)
1627 struct smb2_read_rsp
*rsp
= (struct smb2_read_rsp
*)buf
;
1628 return rsp
->DataOffset
;
1632 smb2_read_data_length(char *buf
, bool in_remaining
)
1634 struct smb2_read_rsp
*rsp
= (struct smb2_read_rsp
*)buf
;
1637 return le32_to_cpu(rsp
->DataRemaining
);
1639 return le32_to_cpu(rsp
->DataLength
);
1644 smb2_sync_read(const unsigned int xid
, struct cifs_fid
*pfid
,
1645 struct cifs_io_parms
*parms
, unsigned int *bytes_read
,
1646 char **buf
, int *buf_type
)
1648 parms
->persistent_fid
= pfid
->persistent_fid
;
1649 parms
->volatile_fid
= pfid
->volatile_fid
;
1650 return SMB2_read(xid
, parms
, bytes_read
, buf
, buf_type
);
1654 smb2_sync_write(const unsigned int xid
, struct cifs_fid
*pfid
,
1655 struct cifs_io_parms
*parms
, unsigned int *written
,
1656 struct kvec
*iov
, unsigned long nr_segs
)
1659 parms
->persistent_fid
= pfid
->persistent_fid
;
1660 parms
->volatile_fid
= pfid
->volatile_fid
;
1661 return SMB2_write(xid
, parms
, written
, iov
, nr_segs
);
1664 /* Set or clear the SPARSE_FILE attribute based on value passed in setsparse */
1665 static bool smb2_set_sparse(const unsigned int xid
, struct cifs_tcon
*tcon
,
1666 struct cifsFileInfo
*cfile
, struct inode
*inode
, __u8 setsparse
)
1668 struct cifsInodeInfo
*cifsi
;
1671 cifsi
= CIFS_I(inode
);
1673 /* if file already sparse don't bother setting sparse again */
1674 if ((cifsi
->cifsAttrs
& FILE_ATTRIBUTE_SPARSE_FILE
) && setsparse
)
1675 return true; /* already sparse */
1677 if (!(cifsi
->cifsAttrs
& FILE_ATTRIBUTE_SPARSE_FILE
) && !setsparse
)
1678 return true; /* already not sparse */
1681 * Can't check for sparse support on share the usual way via the
1682 * FS attribute info (FILE_SUPPORTS_SPARSE_FILES) on the share
1683 * since Samba server doesn't set the flag on the share, yet
1684 * supports the set sparse FSCTL and returns sparse correctly
1685 * in the file attributes. If we fail setting sparse though we
1686 * mark that server does not support sparse files for this share
1687 * to avoid repeatedly sending the unsupported fsctl to server
1688 * if the file is repeatedly extended.
1690 if (tcon
->broken_sparse_sup
)
1693 rc
= SMB2_ioctl(xid
, tcon
, cfile
->fid
.persistent_fid
,
1694 cfile
->fid
.volatile_fid
, FSCTL_SET_SPARSE
,
1696 &setsparse
, 1, NULL
, NULL
);
1698 tcon
->broken_sparse_sup
= true;
1699 cifs_dbg(FYI
, "set sparse rc = %d\n", rc
);
1704 cifsi
->cifsAttrs
|= FILE_ATTRIBUTE_SPARSE_FILE
;
1706 cifsi
->cifsAttrs
&= (~FILE_ATTRIBUTE_SPARSE_FILE
);
1712 smb2_set_file_size(const unsigned int xid
, struct cifs_tcon
*tcon
,
1713 struct cifsFileInfo
*cfile
, __u64 size
, bool set_alloc
)
1715 __le64 eof
= cpu_to_le64(size
);
1716 struct inode
*inode
;
1719 * If extending file more than one page make sparse. Many Linux fs
1720 * make files sparse by default when extending via ftruncate
1722 inode
= d_inode(cfile
->dentry
);
1724 if (!set_alloc
&& (size
> inode
->i_size
+ 8192)) {
1725 __u8 set_sparse
= 1;
1727 /* whether set sparse succeeds or not, extend the file */
1728 smb2_set_sparse(xid
, tcon
, cfile
, inode
, set_sparse
);
1731 return SMB2_set_eof(xid
, tcon
, cfile
->fid
.persistent_fid
,
1732 cfile
->fid
.volatile_fid
, cfile
->pid
, &eof
);
1736 smb2_duplicate_extents(const unsigned int xid
,
1737 struct cifsFileInfo
*srcfile
,
1738 struct cifsFileInfo
*trgtfile
, u64 src_off
,
1739 u64 len
, u64 dest_off
)
1742 unsigned int ret_data_len
;
1743 struct duplicate_extents_to_file dup_ext_buf
;
1744 struct cifs_tcon
*tcon
= tlink_tcon(trgtfile
->tlink
);
1746 /* server fileays advertise duplicate extent support with this flag */
1747 if ((le32_to_cpu(tcon
->fsAttrInfo
.Attributes
) &
1748 FILE_SUPPORTS_BLOCK_REFCOUNTING
) == 0)
1751 dup_ext_buf
.VolatileFileHandle
= srcfile
->fid
.volatile_fid
;
1752 dup_ext_buf
.PersistentFileHandle
= srcfile
->fid
.persistent_fid
;
1753 dup_ext_buf
.SourceFileOffset
= cpu_to_le64(src_off
);
1754 dup_ext_buf
.TargetFileOffset
= cpu_to_le64(dest_off
);
1755 dup_ext_buf
.ByteCount
= cpu_to_le64(len
);
1756 cifs_dbg(FYI
, "duplicate extents: src off %lld dst off %lld len %lld",
1757 src_off
, dest_off
, len
);
1759 rc
= smb2_set_file_size(xid
, tcon
, trgtfile
, dest_off
+ len
, false);
1761 goto duplicate_extents_out
;
1763 rc
= SMB2_ioctl(xid
, tcon
, trgtfile
->fid
.persistent_fid
,
1764 trgtfile
->fid
.volatile_fid
,
1765 FSCTL_DUPLICATE_EXTENTS_TO_FILE
,
1766 true /* is_fsctl */,
1767 (char *)&dup_ext_buf
,
1768 sizeof(struct duplicate_extents_to_file
),
1772 if (ret_data_len
> 0)
1773 cifs_dbg(FYI
, "non-zero response length in duplicate extents");
1775 duplicate_extents_out
:
1780 smb2_set_compression(const unsigned int xid
, struct cifs_tcon
*tcon
,
1781 struct cifsFileInfo
*cfile
)
1783 return SMB2_set_compression(xid
, tcon
, cfile
->fid
.persistent_fid
,
1784 cfile
->fid
.volatile_fid
);
1788 smb3_set_integrity(const unsigned int xid
, struct cifs_tcon
*tcon
,
1789 struct cifsFileInfo
*cfile
)
1791 struct fsctl_set_integrity_information_req integr_info
;
1792 unsigned int ret_data_len
;
1794 integr_info
.ChecksumAlgorithm
= cpu_to_le16(CHECKSUM_TYPE_UNCHANGED
);
1795 integr_info
.Flags
= 0;
1796 integr_info
.Reserved
= 0;
1798 return SMB2_ioctl(xid
, tcon
, cfile
->fid
.persistent_fid
,
1799 cfile
->fid
.volatile_fid
,
1800 FSCTL_SET_INTEGRITY_INFORMATION
,
1801 true /* is_fsctl */,
1802 (char *)&integr_info
,
1803 sizeof(struct fsctl_set_integrity_information_req
),
1809 /* GMT Token is @GMT-YYYY.MM.DD-HH.MM.SS Unicode which is 48 bytes + null */
1810 #define GMT_TOKEN_SIZE 50
1813 * Input buffer contains (empty) struct smb_snapshot array with size filled in
1814 * For output see struct SRV_SNAPSHOT_ARRAY in MS-SMB2 section 2.2.32.2
1817 smb3_enum_snapshots(const unsigned int xid
, struct cifs_tcon
*tcon
,
1818 struct cifsFileInfo
*cfile
, void __user
*ioc_buf
)
1820 char *retbuf
= NULL
;
1821 unsigned int ret_data_len
= 0;
1823 struct smb_snapshot_array snapshot_in
;
1825 rc
= SMB2_ioctl(xid
, tcon
, cfile
->fid
.persistent_fid
,
1826 cfile
->fid
.volatile_fid
,
1827 FSCTL_SRV_ENUMERATE_SNAPSHOTS
,
1828 true /* is_fsctl */,
1829 NULL
, 0 /* no input data */,
1832 cifs_dbg(FYI
, "enum snaphots ioctl returned %d and ret buflen is %d\n",
1837 if (ret_data_len
&& (ioc_buf
!= NULL
) && (retbuf
!= NULL
)) {
1839 if (copy_from_user(&snapshot_in
, ioc_buf
,
1840 sizeof(struct smb_snapshot_array
))) {
1847 * Check for min size, ie not large enough to fit even one GMT
1848 * token (snapshot). On the first ioctl some users may pass in
1849 * smaller size (or zero) to simply get the size of the array
1850 * so the user space caller can allocate sufficient memory
1851 * and retry the ioctl again with larger array size sufficient
1852 * to hold all of the snapshot GMT tokens on the second try.
1854 if (snapshot_in
.snapshot_array_size
< GMT_TOKEN_SIZE
)
1855 ret_data_len
= sizeof(struct smb_snapshot_array
);
1858 * We return struct SRV_SNAPSHOT_ARRAY, followed by
1859 * the snapshot array (of 50 byte GMT tokens) each
1860 * representing an available previous version of the data
1862 if (ret_data_len
> (snapshot_in
.snapshot_array_size
+
1863 sizeof(struct smb_snapshot_array
)))
1864 ret_data_len
= snapshot_in
.snapshot_array_size
+
1865 sizeof(struct smb_snapshot_array
);
1867 if (copy_to_user(ioc_buf
, retbuf
, ret_data_len
))
1876 smb2_query_dir_first(const unsigned int xid
, struct cifs_tcon
*tcon
,
1877 const char *path
, struct cifs_sb_info
*cifs_sb
,
1878 struct cifs_fid
*fid
, __u16 search_flags
,
1879 struct cifs_search_info
*srch_inf
)
1883 __u8 oplock
= SMB2_OPLOCK_LEVEL_NONE
;
1884 struct cifs_open_parms oparms
;
1886 utf16_path
= cifs_convert_path_to_utf16(path
, cifs_sb
);
1891 oparms
.desired_access
= FILE_READ_ATTRIBUTES
| FILE_READ_DATA
;
1892 oparms
.disposition
= FILE_OPEN
;
1893 if (backup_cred(cifs_sb
))
1894 oparms
.create_options
= CREATE_OPEN_BACKUP_INTENT
;
1896 oparms
.create_options
= 0;
1898 oparms
.reconnect
= false;
1900 rc
= SMB2_open(xid
, &oparms
, utf16_path
, &oplock
, NULL
, NULL
, NULL
);
1903 cifs_dbg(FYI
, "open dir failed rc=%d\n", rc
);
1907 srch_inf
->entries_in_buffer
= 0;
1908 srch_inf
->index_of_last_entry
= 2;
1910 rc
= SMB2_query_directory(xid
, tcon
, fid
->persistent_fid
,
1911 fid
->volatile_fid
, 0, srch_inf
);
1913 cifs_dbg(FYI
, "query directory failed rc=%d\n", rc
);
1914 SMB2_close(xid
, tcon
, fid
->persistent_fid
, fid
->volatile_fid
);
1920 smb2_query_dir_next(const unsigned int xid
, struct cifs_tcon
*tcon
,
1921 struct cifs_fid
*fid
, __u16 search_flags
,
1922 struct cifs_search_info
*srch_inf
)
1924 return SMB2_query_directory(xid
, tcon
, fid
->persistent_fid
,
1925 fid
->volatile_fid
, 0, srch_inf
);
1929 smb2_close_dir(const unsigned int xid
, struct cifs_tcon
*tcon
,
1930 struct cifs_fid
*fid
)
1932 return SMB2_close(xid
, tcon
, fid
->persistent_fid
, fid
->volatile_fid
);
1936 * If we negotiate SMB2 protocol and get STATUS_PENDING - update
1937 * the number of credits and return true. Otherwise - return false.
1940 smb2_is_status_pending(char *buf
, struct TCP_Server_Info
*server
)
1942 struct smb2_sync_hdr
*shdr
= (struct smb2_sync_hdr
*)buf
;
1944 if (shdr
->Status
!= STATUS_PENDING
)
1947 if (shdr
->CreditRequest
) {
1948 spin_lock(&server
->req_lock
);
1949 server
->credits
+= le16_to_cpu(shdr
->CreditRequest
);
1950 spin_unlock(&server
->req_lock
);
1951 wake_up(&server
->request_q
);
1958 smb2_is_session_expired(char *buf
)
1960 struct smb2_sync_hdr
*shdr
= (struct smb2_sync_hdr
*)buf
;
1962 if (shdr
->Status
!= STATUS_NETWORK_SESSION_EXPIRED
&&
1963 shdr
->Status
!= STATUS_USER_SESSION_DELETED
)
1966 trace_smb3_ses_expired(shdr
->TreeId
, shdr
->SessionId
,
1967 le16_to_cpu(shdr
->Command
),
1968 le64_to_cpu(shdr
->MessageId
));
1969 cifs_dbg(FYI
, "Session expired or deleted\n");
1975 smb2_oplock_response(struct cifs_tcon
*tcon
, struct cifs_fid
*fid
,
1976 struct cifsInodeInfo
*cinode
)
1978 if (tcon
->ses
->server
->capabilities
& SMB2_GLOBAL_CAP_LEASING
)
1979 return SMB2_lease_break(0, tcon
, cinode
->lease_key
,
1980 smb2_get_lease_state(cinode
));
1982 return SMB2_oplock_break(0, tcon
, fid
->persistent_fid
,
1984 CIFS_CACHE_READ(cinode
) ? 1 : 0);
1988 smb2_set_related(struct smb_rqst
*rqst
)
1990 struct smb2_sync_hdr
*shdr
;
1992 shdr
= (struct smb2_sync_hdr
*)(rqst
->rq_iov
[0].iov_base
);
1993 shdr
->Flags
|= SMB2_FLAGS_RELATED_OPERATIONS
;
1996 char smb2_padding
[7] = {0, 0, 0, 0, 0, 0, 0};
1999 smb2_set_next_command(struct cifs_tcon
*tcon
, struct smb_rqst
*rqst
)
2001 struct smb2_sync_hdr
*shdr
;
2002 struct cifs_ses
*ses
= tcon
->ses
;
2003 struct TCP_Server_Info
*server
= ses
->server
;
2004 unsigned long len
= smb_rqst_len(server
, rqst
);
2007 /* SMB headers in a compound are 8 byte aligned. */
2009 /* No padding needed */
2013 num_padding
= 8 - (len
& 7);
2014 if (!smb3_encryption_required(tcon
)) {
2016 * If we do not have encryption then we can just add an extra
2017 * iov for the padding.
2019 rqst
->rq_iov
[rqst
->rq_nvec
].iov_base
= smb2_padding
;
2020 rqst
->rq_iov
[rqst
->rq_nvec
].iov_len
= num_padding
;
2025 * We can not add a small padding iov for the encryption case
2026 * because the encryption framework can not handle the padding
2028 * We have to flatten this into a single buffer and add
2029 * the padding to it.
2031 for (i
= 1; i
< rqst
->rq_nvec
; i
++) {
2032 memcpy(rqst
->rq_iov
[0].iov_base
+
2033 rqst
->rq_iov
[0].iov_len
,
2034 rqst
->rq_iov
[i
].iov_base
,
2035 rqst
->rq_iov
[i
].iov_len
);
2036 rqst
->rq_iov
[0].iov_len
+= rqst
->rq_iov
[i
].iov_len
;
2038 memset(rqst
->rq_iov
[0].iov_base
+ rqst
->rq_iov
[0].iov_len
,
2040 rqst
->rq_iov
[0].iov_len
+= num_padding
;
2046 shdr
= (struct smb2_sync_hdr
*)(rqst
->rq_iov
[0].iov_base
);
2047 shdr
->NextCommand
= cpu_to_le32(len
);
2051 * Passes the query info response back to the caller on success.
2052 * Caller need to free this with free_rsp_buf().
2055 smb2_query_info_compound(const unsigned int xid
, struct cifs_tcon
*tcon
,
2056 __le16
*utf16_path
, u32 desired_access
,
2057 u32
class, u32 type
, u32 output_len
,
2058 struct kvec
*rsp
, int *buftype
,
2059 struct cifs_sb_info
*cifs_sb
)
2061 struct cifs_ses
*ses
= tcon
->ses
;
2063 struct smb_rqst rqst
[3];
2064 int resp_buftype
[3];
2065 struct kvec rsp_iov
[3];
2066 struct kvec open_iov
[SMB2_CREATE_IOV_SIZE
];
2067 struct kvec qi_iov
[1];
2068 struct kvec close_iov
[1];
2069 u8 oplock
= SMB2_OPLOCK_LEVEL_NONE
;
2070 struct cifs_open_parms oparms
;
2071 struct cifs_fid fid
;
2074 if (smb3_encryption_required(tcon
))
2075 flags
|= CIFS_TRANSFORM_REQ
;
2077 memset(rqst
, 0, sizeof(rqst
));
2078 resp_buftype
[0] = resp_buftype
[1] = resp_buftype
[2] = CIFS_NO_BUFFER
;
2079 memset(rsp_iov
, 0, sizeof(rsp_iov
));
2081 memset(&open_iov
, 0, sizeof(open_iov
));
2082 rqst
[0].rq_iov
= open_iov
;
2083 rqst
[0].rq_nvec
= SMB2_CREATE_IOV_SIZE
;
2086 oparms
.desired_access
= desired_access
;
2087 oparms
.disposition
= FILE_OPEN
;
2088 if (cifs_sb
&& backup_cred(cifs_sb
))
2089 oparms
.create_options
= CREATE_OPEN_BACKUP_INTENT
;
2091 oparms
.create_options
= 0;
2093 oparms
.reconnect
= false;
2095 rc
= SMB2_open_init(tcon
, &rqst
[0], &oplock
, &oparms
, utf16_path
);
2098 smb2_set_next_command(tcon
, &rqst
[0]);
2100 memset(&qi_iov
, 0, sizeof(qi_iov
));
2101 rqst
[1].rq_iov
= qi_iov
;
2102 rqst
[1].rq_nvec
= 1;
2104 rc
= SMB2_query_info_init(tcon
, &rqst
[1], COMPOUND_FID
, COMPOUND_FID
,
2110 smb2_set_next_command(tcon
, &rqst
[1]);
2111 smb2_set_related(&rqst
[1]);
2113 memset(&close_iov
, 0, sizeof(close_iov
));
2114 rqst
[2].rq_iov
= close_iov
;
2115 rqst
[2].rq_nvec
= 1;
2117 rc
= SMB2_close_init(tcon
, &rqst
[2], COMPOUND_FID
, COMPOUND_FID
);
2120 smb2_set_related(&rqst
[2]);
2122 rc
= compound_send_recv(xid
, ses
, flags
, 3, rqst
,
2123 resp_buftype
, rsp_iov
);
2125 free_rsp_buf(resp_buftype
[1], rsp_iov
[1].iov_base
);
2129 *buftype
= resp_buftype
[1];
2132 SMB2_open_free(&rqst
[0]);
2133 SMB2_query_info_free(&rqst
[1]);
2134 SMB2_close_free(&rqst
[2]);
2135 free_rsp_buf(resp_buftype
[0], rsp_iov
[0].iov_base
);
2136 free_rsp_buf(resp_buftype
[2], rsp_iov
[2].iov_base
);
2141 smb2_queryfs(const unsigned int xid
, struct cifs_tcon
*tcon
,
2142 struct kstatfs
*buf
)
2144 struct smb2_query_info_rsp
*rsp
;
2145 struct smb2_fs_full_size_info
*info
= NULL
;
2146 __le16 utf16_path
= 0; /* Null - open root of share */
2147 struct kvec rsp_iov
= {NULL
, 0};
2148 int buftype
= CIFS_NO_BUFFER
;
2152 rc
= smb2_query_info_compound(xid
, tcon
, &utf16_path
,
2153 FILE_READ_ATTRIBUTES
,
2154 FS_FULL_SIZE_INFORMATION
,
2155 SMB2_O_INFO_FILESYSTEM
,
2156 sizeof(struct smb2_fs_full_size_info
),
2157 &rsp_iov
, &buftype
, NULL
);
2161 rsp
= (struct smb2_query_info_rsp
*)rsp_iov
.iov_base
;
2162 buf
->f_type
= SMB2_MAGIC_NUMBER
;
2163 info
= (struct smb2_fs_full_size_info
*)(
2164 le16_to_cpu(rsp
->OutputBufferOffset
) + (char *)rsp
);
2165 rc
= smb2_validate_iov(le16_to_cpu(rsp
->OutputBufferOffset
),
2166 le32_to_cpu(rsp
->OutputBufferLength
),
2168 sizeof(struct smb2_fs_full_size_info
));
2170 smb2_copy_fs_info_to_kstatfs(info
, buf
);
2173 free_rsp_buf(buftype
, rsp_iov
.iov_base
);
2178 smb311_queryfs(const unsigned int xid
, struct cifs_tcon
*tcon
,
2179 struct kstatfs
*buf
)
2182 __le16 srch_path
= 0; /* Null - open root of share */
2183 u8 oplock
= SMB2_OPLOCK_LEVEL_NONE
;
2184 struct cifs_open_parms oparms
;
2185 struct cifs_fid fid
;
2187 if (!tcon
->posix_extensions
)
2188 return smb2_queryfs(xid
, tcon
, buf
);
2191 oparms
.desired_access
= FILE_READ_ATTRIBUTES
;
2192 oparms
.disposition
= FILE_OPEN
;
2193 oparms
.create_options
= 0;
2195 oparms
.reconnect
= false;
2197 rc
= SMB2_open(xid
, &oparms
, &srch_path
, &oplock
, NULL
, NULL
, NULL
);
2201 rc
= SMB311_posix_qfs_info(xid
, tcon
, fid
.persistent_fid
,
2202 fid
.volatile_fid
, buf
);
2203 buf
->f_type
= SMB2_MAGIC_NUMBER
;
2204 SMB2_close(xid
, tcon
, fid
.persistent_fid
, fid
.volatile_fid
);
2209 smb2_compare_fids(struct cifsFileInfo
*ob1
, struct cifsFileInfo
*ob2
)
2211 return ob1
->fid
.persistent_fid
== ob2
->fid
.persistent_fid
&&
2212 ob1
->fid
.volatile_fid
== ob2
->fid
.volatile_fid
;
2216 smb2_mand_lock(const unsigned int xid
, struct cifsFileInfo
*cfile
, __u64 offset
,
2217 __u64 length
, __u32 type
, int lock
, int unlock
, bool wait
)
2219 if (unlock
&& !lock
)
2220 type
= SMB2_LOCKFLAG_UNLOCK
;
2221 return SMB2_lock(xid
, tlink_tcon(cfile
->tlink
),
2222 cfile
->fid
.persistent_fid
, cfile
->fid
.volatile_fid
,
2223 current
->tgid
, length
, offset
, type
, wait
);
2227 smb2_get_lease_key(struct inode
*inode
, struct cifs_fid
*fid
)
2229 memcpy(fid
->lease_key
, CIFS_I(inode
)->lease_key
, SMB2_LEASE_KEY_SIZE
);
2233 smb2_set_lease_key(struct inode
*inode
, struct cifs_fid
*fid
)
2235 memcpy(CIFS_I(inode
)->lease_key
, fid
->lease_key
, SMB2_LEASE_KEY_SIZE
);
2239 smb2_new_lease_key(struct cifs_fid
*fid
)
2241 generate_random_uuid(fid
->lease_key
);
2245 smb2_get_dfs_refer(const unsigned int xid
, struct cifs_ses
*ses
,
2246 const char *search_name
,
2247 struct dfs_info3_param
**target_nodes
,
2248 unsigned int *num_of_nodes
,
2249 const struct nls_table
*nls_codepage
, int remap
)
2252 __le16
*utf16_path
= NULL
;
2253 int utf16_path_len
= 0;
2254 struct cifs_tcon
*tcon
;
2255 struct fsctl_get_dfs_referral_req
*dfs_req
= NULL
;
2256 struct get_dfs_referral_rsp
*dfs_rsp
= NULL
;
2257 u32 dfs_req_size
= 0, dfs_rsp_size
= 0;
2259 cifs_dbg(FYI
, "smb2_get_dfs_refer path <%s>\n", search_name
);
2262 * Try to use the IPC tcon, otherwise just use any
2264 tcon
= ses
->tcon_ipc
;
2266 spin_lock(&cifs_tcp_ses_lock
);
2267 tcon
= list_first_entry_or_null(&ses
->tcon_list
,
2272 spin_unlock(&cifs_tcp_ses_lock
);
2276 cifs_dbg(VFS
, "session %p has no tcon available for a dfs referral request\n",
2282 utf16_path
= cifs_strndup_to_utf16(search_name
, PATH_MAX
,
2284 nls_codepage
, remap
);
2290 dfs_req_size
= sizeof(*dfs_req
) + utf16_path_len
;
2291 dfs_req
= kzalloc(dfs_req_size
, GFP_KERNEL
);
2297 /* Highest DFS referral version understood */
2298 dfs_req
->MaxReferralLevel
= DFS_VERSION
;
2300 /* Path to resolve in an UTF-16 null-terminated string */
2301 memcpy(dfs_req
->RequestFileName
, utf16_path
, utf16_path_len
);
2304 rc
= SMB2_ioctl(xid
, tcon
, NO_FILE_ID
, NO_FILE_ID
,
2305 FSCTL_DFS_GET_REFERRALS
,
2306 true /* is_fsctl */,
2307 (char *)dfs_req
, dfs_req_size
,
2308 (char **)&dfs_rsp
, &dfs_rsp_size
);
2309 } while (rc
== -EAGAIN
);
2312 if ((rc
!= -ENOENT
) && (rc
!= -EOPNOTSUPP
))
2313 cifs_dbg(VFS
, "ioctl error in smb2_get_dfs_refer rc=%d\n", rc
);
2317 rc
= parse_dfs_referrals(dfs_rsp
, dfs_rsp_size
,
2318 num_of_nodes
, target_nodes
,
2319 nls_codepage
, remap
, search_name
,
2320 true /* is_unicode */);
2322 cifs_dbg(VFS
, "parse error in smb2_get_dfs_refer rc=%d\n", rc
);
2327 if (tcon
&& !tcon
->ipc
) {
2328 /* ipc tcons are not refcounted */
2329 spin_lock(&cifs_tcp_ses_lock
);
2331 spin_unlock(&cifs_tcp_ses_lock
);
2338 #define SMB2_SYMLINK_STRUCT_SIZE \
2339 (sizeof(struct smb2_err_rsp) - 1 + sizeof(struct smb2_symlink_err_rsp))
2342 smb2_query_symlink(const unsigned int xid
, struct cifs_tcon
*tcon
,
2343 const char *full_path
, char **target_path
,
2344 struct cifs_sb_info
*cifs_sb
)
2348 __u8 oplock
= SMB2_OPLOCK_LEVEL_NONE
;
2349 struct cifs_open_parms oparms
;
2350 struct cifs_fid fid
;
2351 struct kvec err_iov
= {NULL
, 0};
2352 struct smb2_err_rsp
*err_buf
= NULL
;
2354 struct smb2_symlink_err_rsp
*symlink
;
2355 unsigned int sub_len
;
2356 unsigned int sub_offset
;
2357 unsigned int print_len
;
2358 unsigned int print_offset
;
2360 cifs_dbg(FYI
, "%s: path: %s\n", __func__
, full_path
);
2362 utf16_path
= cifs_convert_path_to_utf16(full_path
, cifs_sb
);
2367 oparms
.desired_access
= FILE_READ_ATTRIBUTES
;
2368 oparms
.disposition
= FILE_OPEN
;
2369 if (backup_cred(cifs_sb
))
2370 oparms
.create_options
= CREATE_OPEN_BACKUP_INTENT
;
2372 oparms
.create_options
= 0;
2374 oparms
.reconnect
= false;
2376 rc
= SMB2_open(xid
, &oparms
, utf16_path
, &oplock
, NULL
, &err_iov
,
2378 if (!rc
|| !err_iov
.iov_base
) {
2383 err_buf
= err_iov
.iov_base
;
2384 if (le32_to_cpu(err_buf
->ByteCount
) < sizeof(struct smb2_symlink_err_rsp
) ||
2385 err_iov
.iov_len
< SMB2_SYMLINK_STRUCT_SIZE
) {
2390 /* open must fail on symlink - reset rc */
2392 symlink
= (struct smb2_symlink_err_rsp
*)err_buf
->ErrorData
;
2393 sub_len
= le16_to_cpu(symlink
->SubstituteNameLength
);
2394 sub_offset
= le16_to_cpu(symlink
->SubstituteNameOffset
);
2395 print_len
= le16_to_cpu(symlink
->PrintNameLength
);
2396 print_offset
= le16_to_cpu(symlink
->PrintNameOffset
);
2398 if (err_iov
.iov_len
< SMB2_SYMLINK_STRUCT_SIZE
+ sub_offset
+ sub_len
) {
2403 if (err_iov
.iov_len
<
2404 SMB2_SYMLINK_STRUCT_SIZE
+ print_offset
+ print_len
) {
2409 *target_path
= cifs_strndup_from_utf16(
2410 (char *)symlink
->PathBuffer
+ sub_offset
,
2411 sub_len
, true, cifs_sb
->local_nls
);
2412 if (!(*target_path
)) {
2416 convert_delimiter(*target_path
, '/');
2417 cifs_dbg(FYI
, "%s: target path: %s\n", __func__
, *target_path
);
2420 free_rsp_buf(resp_buftype
, err_buf
);
2426 #ifdef CONFIG_CIFS_ACL
2427 static struct cifs_ntsd
*
2428 get_smb2_acl_by_fid(struct cifs_sb_info
*cifs_sb
,
2429 const struct cifs_fid
*cifsfid
, u32
*pacllen
)
2431 struct cifs_ntsd
*pntsd
= NULL
;
2433 int rc
= -EOPNOTSUPP
;
2434 struct tcon_link
*tlink
= cifs_sb_tlink(cifs_sb
);
2437 return ERR_CAST(tlink
);
2440 cifs_dbg(FYI
, "trying to get acl\n");
2442 rc
= SMB2_query_acl(xid
, tlink_tcon(tlink
), cifsfid
->persistent_fid
,
2443 cifsfid
->volatile_fid
, (void **)&pntsd
, pacllen
);
2446 cifs_put_tlink(tlink
);
2448 cifs_dbg(FYI
, "%s: rc = %d ACL len %d\n", __func__
, rc
, *pacllen
);
2455 static struct cifs_ntsd
*
2456 get_smb2_acl_by_path(struct cifs_sb_info
*cifs_sb
,
2457 const char *path
, u32
*pacllen
)
2459 struct cifs_ntsd
*pntsd
= NULL
;
2460 u8 oplock
= SMB2_OPLOCK_LEVEL_NONE
;
2463 struct cifs_tcon
*tcon
;
2464 struct tcon_link
*tlink
= cifs_sb_tlink(cifs_sb
);
2465 struct cifs_fid fid
;
2466 struct cifs_open_parms oparms
;
2469 cifs_dbg(FYI
, "get smb3 acl for path %s\n", path
);
2471 return ERR_CAST(tlink
);
2473 tcon
= tlink_tcon(tlink
);
2476 if (backup_cred(cifs_sb
))
2477 oparms
.create_options
= CREATE_OPEN_BACKUP_INTENT
;
2479 oparms
.create_options
= 0;
2481 utf16_path
= cifs_convert_path_to_utf16(path
, cifs_sb
);
2489 oparms
.desired_access
= READ_CONTROL
;
2490 oparms
.disposition
= FILE_OPEN
;
2492 oparms
.reconnect
= false;
2494 rc
= SMB2_open(xid
, &oparms
, utf16_path
, &oplock
, NULL
, NULL
, NULL
);
2497 rc
= SMB2_query_acl(xid
, tlink_tcon(tlink
), fid
.persistent_fid
,
2498 fid
.volatile_fid
, (void **)&pntsd
, pacllen
);
2499 SMB2_close(xid
, tcon
, fid
.persistent_fid
, fid
.volatile_fid
);
2502 cifs_put_tlink(tlink
);
2505 cifs_dbg(FYI
, "%s: rc = %d ACL len %d\n", __func__
, rc
, *pacllen
);
2511 #ifdef CONFIG_CIFS_ACL
2513 set_smb2_acl(struct cifs_ntsd
*pnntsd
, __u32 acllen
,
2514 struct inode
*inode
, const char *path
, int aclflag
)
2516 u8 oplock
= SMB2_OPLOCK_LEVEL_NONE
;
2518 int rc
, access_flags
= 0;
2519 struct cifs_tcon
*tcon
;
2520 struct cifs_sb_info
*cifs_sb
= CIFS_SB(inode
->i_sb
);
2521 struct tcon_link
*tlink
= cifs_sb_tlink(cifs_sb
);
2522 struct cifs_fid fid
;
2523 struct cifs_open_parms oparms
;
2526 cifs_dbg(FYI
, "set smb3 acl for path %s\n", path
);
2528 return PTR_ERR(tlink
);
2530 tcon
= tlink_tcon(tlink
);
2533 if (backup_cred(cifs_sb
))
2534 oparms
.create_options
= CREATE_OPEN_BACKUP_INTENT
;
2536 oparms
.create_options
= 0;
2538 if (aclflag
== CIFS_ACL_OWNER
|| aclflag
== CIFS_ACL_GROUP
)
2539 access_flags
= WRITE_OWNER
;
2541 access_flags
= WRITE_DAC
;
2543 utf16_path
= cifs_convert_path_to_utf16(path
, cifs_sb
);
2551 oparms
.desired_access
= access_flags
;
2552 oparms
.disposition
= FILE_OPEN
;
2555 oparms
.reconnect
= false;
2557 rc
= SMB2_open(xid
, &oparms
, utf16_path
, &oplock
, NULL
, NULL
, NULL
);
2560 rc
= SMB2_set_acl(xid
, tlink_tcon(tlink
), fid
.persistent_fid
,
2561 fid
.volatile_fid
, pnntsd
, acllen
, aclflag
);
2562 SMB2_close(xid
, tcon
, fid
.persistent_fid
, fid
.volatile_fid
);
2565 cifs_put_tlink(tlink
);
2569 #endif /* CIFS_ACL */
2571 /* Retrieve an ACL from the server */
2572 static struct cifs_ntsd
*
2573 get_smb2_acl(struct cifs_sb_info
*cifs_sb
,
2574 struct inode
*inode
, const char *path
,
2577 struct cifs_ntsd
*pntsd
= NULL
;
2578 struct cifsFileInfo
*open_file
= NULL
;
2581 open_file
= find_readable_file(CIFS_I(inode
), true);
2583 return get_smb2_acl_by_path(cifs_sb
, path
, pacllen
);
2585 pntsd
= get_smb2_acl_by_fid(cifs_sb
, &open_file
->fid
, pacllen
);
2586 cifsFileInfo_put(open_file
);
2591 static long smb3_zero_range(struct file
*file
, struct cifs_tcon
*tcon
,
2592 loff_t offset
, loff_t len
, bool keep_size
)
2594 struct cifs_ses
*ses
= tcon
->ses
;
2595 struct inode
*inode
;
2596 struct cifsInodeInfo
*cifsi
;
2597 struct cifsFileInfo
*cfile
= file
->private_data
;
2598 struct file_zero_data_information fsctl_buf
;
2599 struct smb_rqst rqst
[2];
2600 int resp_buftype
[2];
2601 struct kvec rsp_iov
[2];
2602 struct kvec io_iov
[SMB2_IOCTL_IOV_SIZE
];
2603 struct kvec si_iov
[1];
2604 unsigned int size
[1];
2608 int num
= 0, flags
= 0;
2613 inode
= d_inode(cfile
->dentry
);
2614 cifsi
= CIFS_I(inode
);
2616 trace_smb3_zero_enter(xid
, cfile
->fid
.persistent_fid
, tcon
->tid
,
2617 ses
->Suid
, offset
, len
);
2620 /* if file not oplocked can't be sure whether asking to extend size */
2621 if (!CIFS_CACHE_READ(cifsi
))
2622 if (keep_size
== false) {
2624 trace_smb3_zero_err(xid
, cfile
->fid
.persistent_fid
,
2625 tcon
->tid
, ses
->Suid
, offset
, len
, rc
);
2631 * Must check if file sparse since fallocate -z (zero range) assumes
2632 * non-sparse allocation
2634 if (!(cifsi
->cifsAttrs
& FILE_ATTRIBUTE_SPARSE_FILE
)) {
2636 trace_smb3_zero_err(xid
, cfile
->fid
.persistent_fid
, tcon
->tid
,
2637 ses
->Suid
, offset
, len
, rc
);
2642 cifs_dbg(FYI
, "offset %lld len %lld", offset
, len
);
2644 fsctl_buf
.FileOffset
= cpu_to_le64(offset
);
2645 fsctl_buf
.BeyondFinalZero
= cpu_to_le64(offset
+ len
);
2647 if (smb3_encryption_required(tcon
))
2648 flags
|= CIFS_TRANSFORM_REQ
;
2650 memset(rqst
, 0, sizeof(rqst
));
2651 resp_buftype
[0] = resp_buftype
[1] = CIFS_NO_BUFFER
;
2652 memset(rsp_iov
, 0, sizeof(rsp_iov
));
2655 memset(&io_iov
, 0, sizeof(io_iov
));
2656 rqst
[num
].rq_iov
= io_iov
;
2657 rqst
[num
].rq_nvec
= SMB2_IOCTL_IOV_SIZE
;
2658 rc
= SMB2_ioctl_init(tcon
, &rqst
[num
++], cfile
->fid
.persistent_fid
,
2659 cfile
->fid
.volatile_fid
, FSCTL_SET_ZERO_DATA
,
2660 true /* is_fctl */, (char *)&fsctl_buf
,
2661 sizeof(struct file_zero_data_information
));
2663 goto zero_range_exit
;
2666 * do we also need to change the size of the file?
2668 if (keep_size
== false && i_size_read(inode
) < offset
+ len
) {
2669 smb2_set_next_command(tcon
, &rqst
[0]);
2671 memset(&si_iov
, 0, sizeof(si_iov
));
2672 rqst
[num
].rq_iov
= si_iov
;
2673 rqst
[num
].rq_nvec
= 1;
2675 eof
= cpu_to_le64(offset
+ len
);
2676 size
[0] = 8; /* sizeof __le64 */
2679 rc
= SMB2_set_info_init(tcon
, &rqst
[num
++],
2680 cfile
->fid
.persistent_fid
,
2681 cfile
->fid
.persistent_fid
,
2683 FILE_END_OF_FILE_INFORMATION
,
2684 SMB2_O_INFO_FILE
, 0, data
, size
);
2685 smb2_set_related(&rqst
[1]);
2688 rc
= compound_send_recv(xid
, ses
, flags
, num
, rqst
,
2689 resp_buftype
, rsp_iov
);
2692 SMB2_ioctl_free(&rqst
[0]);
2693 SMB2_set_info_free(&rqst
[1]);
2694 free_rsp_buf(resp_buftype
[0], rsp_iov
[0].iov_base
);
2695 free_rsp_buf(resp_buftype
[1], rsp_iov
[1].iov_base
);
2698 trace_smb3_zero_err(xid
, cfile
->fid
.persistent_fid
, tcon
->tid
,
2699 ses
->Suid
, offset
, len
, rc
);
2701 trace_smb3_zero_done(xid
, cfile
->fid
.persistent_fid
, tcon
->tid
,
2702 ses
->Suid
, offset
, len
);
2706 static long smb3_punch_hole(struct file
*file
, struct cifs_tcon
*tcon
,
2707 loff_t offset
, loff_t len
)
2709 struct inode
*inode
;
2710 struct cifsInodeInfo
*cifsi
;
2711 struct cifsFileInfo
*cfile
= file
->private_data
;
2712 struct file_zero_data_information fsctl_buf
;
2715 __u8 set_sparse
= 1;
2719 inode
= d_inode(cfile
->dentry
);
2720 cifsi
= CIFS_I(inode
);
2722 /* Need to make file sparse, if not already, before freeing range. */
2723 /* Consider adding equivalent for compressed since it could also work */
2724 if (!smb2_set_sparse(xid
, tcon
, cfile
, inode
, set_sparse
)) {
2730 cifs_dbg(FYI
, "offset %lld len %lld", offset
, len
);
2732 fsctl_buf
.FileOffset
= cpu_to_le64(offset
);
2733 fsctl_buf
.BeyondFinalZero
= cpu_to_le64(offset
+ len
);
2735 rc
= SMB2_ioctl(xid
, tcon
, cfile
->fid
.persistent_fid
,
2736 cfile
->fid
.volatile_fid
, FSCTL_SET_ZERO_DATA
,
2737 true /* is_fctl */, (char *)&fsctl_buf
,
2738 sizeof(struct file_zero_data_information
), NULL
, NULL
);
2743 static long smb3_simple_falloc(struct file
*file
, struct cifs_tcon
*tcon
,
2744 loff_t off
, loff_t len
, bool keep_size
)
2746 struct inode
*inode
;
2747 struct cifsInodeInfo
*cifsi
;
2748 struct cifsFileInfo
*cfile
= file
->private_data
;
2749 long rc
= -EOPNOTSUPP
;
2755 inode
= d_inode(cfile
->dentry
);
2756 cifsi
= CIFS_I(inode
);
2758 trace_smb3_falloc_enter(xid
, cfile
->fid
.persistent_fid
, tcon
->tid
,
2759 tcon
->ses
->Suid
, off
, len
);
2760 /* if file not oplocked can't be sure whether asking to extend size */
2761 if (!CIFS_CACHE_READ(cifsi
))
2762 if (keep_size
== false) {
2763 trace_smb3_falloc_err(xid
, cfile
->fid
.persistent_fid
,
2764 tcon
->tid
, tcon
->ses
->Suid
, off
, len
, rc
);
2770 * Files are non-sparse by default so falloc may be a no-op
2771 * Must check if file sparse. If not sparse, and not extending
2772 * then no need to do anything since file already allocated
2774 if ((cifsi
->cifsAttrs
& FILE_ATTRIBUTE_SPARSE_FILE
) == 0) {
2775 if (keep_size
== true)
2777 /* check if extending file */
2778 else if (i_size_read(inode
) >= off
+ len
)
2779 /* not extending file and already not sparse */
2781 /* BB: in future add else clause to extend file */
2785 trace_smb3_falloc_err(xid
, cfile
->fid
.persistent_fid
,
2786 tcon
->tid
, tcon
->ses
->Suid
, off
, len
, rc
);
2788 trace_smb3_falloc_done(xid
, cfile
->fid
.persistent_fid
,
2789 tcon
->tid
, tcon
->ses
->Suid
, off
, len
);
2794 if ((keep_size
== true) || (i_size_read(inode
) >= off
+ len
)) {
2796 * Check if falloc starts within first few pages of file
2797 * and ends within a few pages of the end of file to
2798 * ensure that most of file is being forced to be
2799 * fallocated now. If so then setting whole file sparse
2800 * ie potentially making a few extra pages at the beginning
2801 * or end of the file non-sparse via set_sparse is harmless.
2803 if ((off
> 8192) || (off
+ len
+ 8192 < i_size_read(inode
))) {
2805 trace_smb3_falloc_err(xid
, cfile
->fid
.persistent_fid
,
2806 tcon
->tid
, tcon
->ses
->Suid
, off
, len
, rc
);
2811 smb2_set_sparse(xid
, tcon
, cfile
, inode
, false);
2814 smb2_set_sparse(xid
, tcon
, cfile
, inode
, false);
2816 if (i_size_read(inode
) < off
+ len
) {
2817 eof
= cpu_to_le64(off
+ len
);
2818 rc
= SMB2_set_eof(xid
, tcon
, cfile
->fid
.persistent_fid
,
2819 cfile
->fid
.volatile_fid
, cfile
->pid
,
2825 trace_smb3_falloc_err(xid
, cfile
->fid
.persistent_fid
, tcon
->tid
,
2826 tcon
->ses
->Suid
, off
, len
, rc
);
2828 trace_smb3_falloc_done(xid
, cfile
->fid
.persistent_fid
, tcon
->tid
,
2829 tcon
->ses
->Suid
, off
, len
);
2836 static long smb3_fallocate(struct file
*file
, struct cifs_tcon
*tcon
, int mode
,
2837 loff_t off
, loff_t len
)
2839 /* KEEP_SIZE already checked for by do_fallocate */
2840 if (mode
& FALLOC_FL_PUNCH_HOLE
)
2841 return smb3_punch_hole(file
, tcon
, off
, len
);
2842 else if (mode
& FALLOC_FL_ZERO_RANGE
) {
2843 if (mode
& FALLOC_FL_KEEP_SIZE
)
2844 return smb3_zero_range(file
, tcon
, off
, len
, true);
2845 return smb3_zero_range(file
, tcon
, off
, len
, false);
2846 } else if (mode
== FALLOC_FL_KEEP_SIZE
)
2847 return smb3_simple_falloc(file
, tcon
, off
, len
, true);
2849 return smb3_simple_falloc(file
, tcon
, off
, len
, false);
2855 smb2_downgrade_oplock(struct TCP_Server_Info
*server
,
2856 struct cifsInodeInfo
*cinode
, bool set_level2
)
2859 server
->ops
->set_oplock_level(cinode
, SMB2_OPLOCK_LEVEL_II
,
2862 server
->ops
->set_oplock_level(cinode
, 0, 0, NULL
);
2866 smb21_downgrade_oplock(struct TCP_Server_Info
*server
,
2867 struct cifsInodeInfo
*cinode
, bool set_level2
)
2869 server
->ops
->set_oplock_level(cinode
,
2870 set_level2
? SMB2_LEASE_READ_CACHING_HE
:
2875 smb2_set_oplock_level(struct cifsInodeInfo
*cinode
, __u32 oplock
,
2876 unsigned int epoch
, bool *purge_cache
)
2879 if (oplock
== SMB2_OPLOCK_LEVEL_NOCHANGE
)
2881 if (oplock
== SMB2_OPLOCK_LEVEL_BATCH
) {
2882 cinode
->oplock
= CIFS_CACHE_RHW_FLG
;
2883 cifs_dbg(FYI
, "Batch Oplock granted on inode %p\n",
2884 &cinode
->vfs_inode
);
2885 } else if (oplock
== SMB2_OPLOCK_LEVEL_EXCLUSIVE
) {
2886 cinode
->oplock
= CIFS_CACHE_RW_FLG
;
2887 cifs_dbg(FYI
, "Exclusive Oplock granted on inode %p\n",
2888 &cinode
->vfs_inode
);
2889 } else if (oplock
== SMB2_OPLOCK_LEVEL_II
) {
2890 cinode
->oplock
= CIFS_CACHE_READ_FLG
;
2891 cifs_dbg(FYI
, "Level II Oplock granted on inode %p\n",
2892 &cinode
->vfs_inode
);
2898 smb21_set_oplock_level(struct cifsInodeInfo
*cinode
, __u32 oplock
,
2899 unsigned int epoch
, bool *purge_cache
)
2901 char message
[5] = {0};
2904 if (oplock
== SMB2_OPLOCK_LEVEL_NOCHANGE
)
2908 if (oplock
& SMB2_LEASE_READ_CACHING_HE
) {
2909 cinode
->oplock
|= CIFS_CACHE_READ_FLG
;
2910 strcat(message
, "R");
2912 if (oplock
& SMB2_LEASE_HANDLE_CACHING_HE
) {
2913 cinode
->oplock
|= CIFS_CACHE_HANDLE_FLG
;
2914 strcat(message
, "H");
2916 if (oplock
& SMB2_LEASE_WRITE_CACHING_HE
) {
2917 cinode
->oplock
|= CIFS_CACHE_WRITE_FLG
;
2918 strcat(message
, "W");
2920 if (!cinode
->oplock
)
2921 strcat(message
, "None");
2922 cifs_dbg(FYI
, "%s Lease granted on inode %p\n", message
,
2923 &cinode
->vfs_inode
);
2927 smb3_set_oplock_level(struct cifsInodeInfo
*cinode
, __u32 oplock
,
2928 unsigned int epoch
, bool *purge_cache
)
2930 unsigned int old_oplock
= cinode
->oplock
;
2932 smb21_set_oplock_level(cinode
, oplock
, epoch
, purge_cache
);
2935 *purge_cache
= false;
2936 if (old_oplock
== CIFS_CACHE_READ_FLG
) {
2937 if (cinode
->oplock
== CIFS_CACHE_READ_FLG
&&
2938 (epoch
- cinode
->epoch
> 0))
2939 *purge_cache
= true;
2940 else if (cinode
->oplock
== CIFS_CACHE_RH_FLG
&&
2941 (epoch
- cinode
->epoch
> 1))
2942 *purge_cache
= true;
2943 else if (cinode
->oplock
== CIFS_CACHE_RHW_FLG
&&
2944 (epoch
- cinode
->epoch
> 1))
2945 *purge_cache
= true;
2946 else if (cinode
->oplock
== 0 &&
2947 (epoch
- cinode
->epoch
> 0))
2948 *purge_cache
= true;
2949 } else if (old_oplock
== CIFS_CACHE_RH_FLG
) {
2950 if (cinode
->oplock
== CIFS_CACHE_RH_FLG
&&
2951 (epoch
- cinode
->epoch
> 0))
2952 *purge_cache
= true;
2953 else if (cinode
->oplock
== CIFS_CACHE_RHW_FLG
&&
2954 (epoch
- cinode
->epoch
> 1))
2955 *purge_cache
= true;
2957 cinode
->epoch
= epoch
;
2962 smb2_is_read_op(__u32 oplock
)
2964 return oplock
== SMB2_OPLOCK_LEVEL_II
;
2968 smb21_is_read_op(__u32 oplock
)
2970 return (oplock
& SMB2_LEASE_READ_CACHING_HE
) &&
2971 !(oplock
& SMB2_LEASE_WRITE_CACHING_HE
);
2975 map_oplock_to_lease(u8 oplock
)
2977 if (oplock
== SMB2_OPLOCK_LEVEL_EXCLUSIVE
)
2978 return SMB2_LEASE_WRITE_CACHING
| SMB2_LEASE_READ_CACHING
;
2979 else if (oplock
== SMB2_OPLOCK_LEVEL_II
)
2980 return SMB2_LEASE_READ_CACHING
;
2981 else if (oplock
== SMB2_OPLOCK_LEVEL_BATCH
)
2982 return SMB2_LEASE_HANDLE_CACHING
| SMB2_LEASE_READ_CACHING
|
2983 SMB2_LEASE_WRITE_CACHING
;
2988 smb2_create_lease_buf(u8
*lease_key
, u8 oplock
)
2990 struct create_lease
*buf
;
2992 buf
= kzalloc(sizeof(struct create_lease
), GFP_KERNEL
);
2996 memcpy(&buf
->lcontext
.LeaseKey
, lease_key
, SMB2_LEASE_KEY_SIZE
);
2997 buf
->lcontext
.LeaseState
= map_oplock_to_lease(oplock
);
2999 buf
->ccontext
.DataOffset
= cpu_to_le16(offsetof
3000 (struct create_lease
, lcontext
));
3001 buf
->ccontext
.DataLength
= cpu_to_le32(sizeof(struct lease_context
));
3002 buf
->ccontext
.NameOffset
= cpu_to_le16(offsetof
3003 (struct create_lease
, Name
));
3004 buf
->ccontext
.NameLength
= cpu_to_le16(4);
3005 /* SMB2_CREATE_REQUEST_LEASE is "RqLs" */
3014 smb3_create_lease_buf(u8
*lease_key
, u8 oplock
)
3016 struct create_lease_v2
*buf
;
3018 buf
= kzalloc(sizeof(struct create_lease_v2
), GFP_KERNEL
);
3022 memcpy(&buf
->lcontext
.LeaseKey
, lease_key
, SMB2_LEASE_KEY_SIZE
);
3023 buf
->lcontext
.LeaseState
= map_oplock_to_lease(oplock
);
3025 buf
->ccontext
.DataOffset
= cpu_to_le16(offsetof
3026 (struct create_lease_v2
, lcontext
));
3027 buf
->ccontext
.DataLength
= cpu_to_le32(sizeof(struct lease_context_v2
));
3028 buf
->ccontext
.NameOffset
= cpu_to_le16(offsetof
3029 (struct create_lease_v2
, Name
));
3030 buf
->ccontext
.NameLength
= cpu_to_le16(4);
3031 /* SMB2_CREATE_REQUEST_LEASE is "RqLs" */
3040 smb2_parse_lease_buf(void *buf
, unsigned int *epoch
, char *lease_key
)
3042 struct create_lease
*lc
= (struct create_lease
*)buf
;
3044 *epoch
= 0; /* not used */
3045 if (lc
->lcontext
.LeaseFlags
& SMB2_LEASE_FLAG_BREAK_IN_PROGRESS
)
3046 return SMB2_OPLOCK_LEVEL_NOCHANGE
;
3047 return le32_to_cpu(lc
->lcontext
.LeaseState
);
3051 smb3_parse_lease_buf(void *buf
, unsigned int *epoch
, char *lease_key
)
3053 struct create_lease_v2
*lc
= (struct create_lease_v2
*)buf
;
3055 *epoch
= le16_to_cpu(lc
->lcontext
.Epoch
);
3056 if (lc
->lcontext
.LeaseFlags
& SMB2_LEASE_FLAG_BREAK_IN_PROGRESS
)
3057 return SMB2_OPLOCK_LEVEL_NOCHANGE
;
3059 memcpy(lease_key
, &lc
->lcontext
.LeaseKey
, SMB2_LEASE_KEY_SIZE
);
3060 return le32_to_cpu(lc
->lcontext
.LeaseState
);
3064 smb2_wp_retry_size(struct inode
*inode
)
3066 return min_t(unsigned int, CIFS_SB(inode
->i_sb
)->wsize
,
3067 SMB2_MAX_BUFFER_SIZE
);
3071 smb2_dir_needs_close(struct cifsFileInfo
*cfile
)
3073 return !cfile
->invalidHandle
;
3077 fill_transform_hdr(struct smb2_transform_hdr
*tr_hdr
, unsigned int orig_len
,
3078 struct smb_rqst
*old_rq
)
3080 struct smb2_sync_hdr
*shdr
=
3081 (struct smb2_sync_hdr
*)old_rq
->rq_iov
[0].iov_base
;
3083 memset(tr_hdr
, 0, sizeof(struct smb2_transform_hdr
));
3084 tr_hdr
->ProtocolId
= SMB2_TRANSFORM_PROTO_NUM
;
3085 tr_hdr
->OriginalMessageSize
= cpu_to_le32(orig_len
);
3086 tr_hdr
->Flags
= cpu_to_le16(0x01);
3087 get_random_bytes(&tr_hdr
->Nonce
, SMB3_AES128CMM_NONCE
);
3088 memcpy(&tr_hdr
->SessionId
, &shdr
->SessionId
, 8);
3091 /* We can not use the normal sg_set_buf() as we will sometimes pass a
3092 * stack object as buf.
3094 static inline void smb2_sg_set_buf(struct scatterlist
*sg
, const void *buf
,
3095 unsigned int buflen
)
3097 sg_set_page(sg
, virt_to_page(buf
), buflen
, offset_in_page(buf
));
3100 /* Assumes the first rqst has a transform header as the first iov.
3102 * rqst[0].rq_iov[0] is transform header
3103 * rqst[0].rq_iov[1+] data to be encrypted/decrypted
3104 * rqst[1+].rq_iov[0+] data to be encrypted/decrypted
3106 static struct scatterlist
*
3107 init_sg(int num_rqst
, struct smb_rqst
*rqst
, u8
*sign
)
3109 unsigned int sg_len
;
3110 struct scatterlist
*sg
;
3113 unsigned int idx
= 0;
3117 for (i
= 0; i
< num_rqst
; i
++)
3118 sg_len
+= rqst
[i
].rq_nvec
+ rqst
[i
].rq_npages
;
3120 sg
= kmalloc_array(sg_len
, sizeof(struct scatterlist
), GFP_KERNEL
);
3124 sg_init_table(sg
, sg_len
);
3125 for (i
= 0; i
< num_rqst
; i
++) {
3126 for (j
= 0; j
< rqst
[i
].rq_nvec
; j
++) {
3128 * The first rqst has a transform header where the
3129 * first 20 bytes are not part of the encrypted blob
3131 skip
= (i
== 0) && (j
== 0) ? 20 : 0;
3132 smb2_sg_set_buf(&sg
[idx
++],
3133 rqst
[i
].rq_iov
[j
].iov_base
+ skip
,
3134 rqst
[i
].rq_iov
[j
].iov_len
- skip
);
3137 for (j
= 0; j
< rqst
[i
].rq_npages
; j
++) {
3138 unsigned int len
, offset
;
3140 rqst_page_get_length(&rqst
[i
], j
, &len
, &offset
);
3141 sg_set_page(&sg
[idx
++], rqst
[i
].rq_pages
[j
], len
, offset
);
3144 smb2_sg_set_buf(&sg
[idx
], sign
, SMB2_SIGNATURE_SIZE
);
3149 smb2_get_enc_key(struct TCP_Server_Info
*server
, __u64 ses_id
, int enc
, u8
*key
)
3151 struct cifs_ses
*ses
;
3154 spin_lock(&cifs_tcp_ses_lock
);
3155 list_for_each_entry(ses
, &server
->smb_ses_list
, smb_ses_list
) {
3156 if (ses
->Suid
!= ses_id
)
3158 ses_enc_key
= enc
? ses
->smb3encryptionkey
:
3159 ses
->smb3decryptionkey
;
3160 memcpy(key
, ses_enc_key
, SMB3_SIGN_KEY_SIZE
);
3161 spin_unlock(&cifs_tcp_ses_lock
);
3164 spin_unlock(&cifs_tcp_ses_lock
);
3169 * Encrypt or decrypt @rqst message. @rqst[0] has the following format:
3170 * iov[0] - transform header (associate data),
3171 * iov[1-N] - SMB2 header and pages - data to encrypt.
3172 * On success return encrypted data in iov[1-N] and pages, leave iov[0]
3176 crypt_message(struct TCP_Server_Info
*server
, int num_rqst
,
3177 struct smb_rqst
*rqst
, int enc
)
3179 struct smb2_transform_hdr
*tr_hdr
=
3180 (struct smb2_transform_hdr
*)rqst
[0].rq_iov
[0].iov_base
;
3181 unsigned int assoc_data_len
= sizeof(struct smb2_transform_hdr
) - 20;
3183 struct scatterlist
*sg
;
3184 u8 sign
[SMB2_SIGNATURE_SIZE
] = {};
3185 u8 key
[SMB3_SIGN_KEY_SIZE
];
3186 struct aead_request
*req
;
3188 unsigned int iv_len
;
3189 DECLARE_CRYPTO_WAIT(wait
);
3190 struct crypto_aead
*tfm
;
3191 unsigned int crypt_len
= le32_to_cpu(tr_hdr
->OriginalMessageSize
);
3193 rc
= smb2_get_enc_key(server
, tr_hdr
->SessionId
, enc
, key
);
3195 cifs_dbg(VFS
, "%s: Could not get %scryption key\n", __func__
,
3200 rc
= smb3_crypto_aead_allocate(server
);
3202 cifs_dbg(VFS
, "%s: crypto alloc failed\n", __func__
);
3206 tfm
= enc
? server
->secmech
.ccmaesencrypt
:
3207 server
->secmech
.ccmaesdecrypt
;
3208 rc
= crypto_aead_setkey(tfm
, key
, SMB3_SIGN_KEY_SIZE
);
3210 cifs_dbg(VFS
, "%s: Failed to set aead key %d\n", __func__
, rc
);
3214 rc
= crypto_aead_setauthsize(tfm
, SMB2_SIGNATURE_SIZE
);
3216 cifs_dbg(VFS
, "%s: Failed to set authsize %d\n", __func__
, rc
);
3220 req
= aead_request_alloc(tfm
, GFP_KERNEL
);
3222 cifs_dbg(VFS
, "%s: Failed to alloc aead request", __func__
);
3227 memcpy(sign
, &tr_hdr
->Signature
, SMB2_SIGNATURE_SIZE
);
3228 crypt_len
+= SMB2_SIGNATURE_SIZE
;
3231 sg
= init_sg(num_rqst
, rqst
, sign
);
3233 cifs_dbg(VFS
, "%s: Failed to init sg", __func__
);
3238 iv_len
= crypto_aead_ivsize(tfm
);
3239 iv
= kzalloc(iv_len
, GFP_KERNEL
);
3241 cifs_dbg(VFS
, "%s: Failed to alloc IV", __func__
);
3246 memcpy(iv
+ 1, (char *)tr_hdr
->Nonce
, SMB3_AES128CMM_NONCE
);
3248 aead_request_set_crypt(req
, sg
, sg
, crypt_len
, iv
);
3249 aead_request_set_ad(req
, assoc_data_len
);
3251 aead_request_set_callback(req
, CRYPTO_TFM_REQ_MAY_BACKLOG
,
3252 crypto_req_done
, &wait
);
3254 rc
= crypto_wait_req(enc
? crypto_aead_encrypt(req
)
3255 : crypto_aead_decrypt(req
), &wait
);
3258 memcpy(&tr_hdr
->Signature
, sign
, SMB2_SIGNATURE_SIZE
);
3269 smb3_free_compound_rqst(int num_rqst
, struct smb_rqst
*rqst
)
3273 for (i
= 0; i
< num_rqst
; i
++) {
3274 if (rqst
[i
].rq_pages
) {
3275 for (j
= rqst
[i
].rq_npages
- 1; j
>= 0; j
--)
3276 put_page(rqst
[i
].rq_pages
[j
]);
3277 kfree(rqst
[i
].rq_pages
);
3283 * This function will initialize new_rq and encrypt the content.
3284 * The first entry, new_rq[0], only contains a single iov which contains
3285 * a smb2_transform_hdr and is pre-allocated by the caller.
3286 * This function then populates new_rq[1+] with the content from olq_rq[0+].
3288 * The end result is an array of smb_rqst structures where the first structure
3289 * only contains a single iov for the transform header which we then can pass
3290 * to crypt_message().
3292 * new_rq[0].rq_iov[0] : smb2_transform_hdr pre-allocated by the caller
3293 * new_rq[1+].rq_iov[*] == old_rq[0+].rq_iov[*] : SMB2/3 requests
3296 smb3_init_transform_rq(struct TCP_Server_Info
*server
, int num_rqst
,
3297 struct smb_rqst
*new_rq
, struct smb_rqst
*old_rq
)
3299 struct page
**pages
;
3300 struct smb2_transform_hdr
*tr_hdr
= new_rq
[0].rq_iov
[0].iov_base
;
3301 unsigned int npages
;
3302 unsigned int orig_len
= 0;
3306 for (i
= 1; i
< num_rqst
; i
++) {
3307 npages
= old_rq
[i
- 1].rq_npages
;
3308 pages
= kmalloc_array(npages
, sizeof(struct page
*),
3313 new_rq
[i
].rq_pages
= pages
;
3314 new_rq
[i
].rq_npages
= npages
;
3315 new_rq
[i
].rq_offset
= old_rq
[i
- 1].rq_offset
;
3316 new_rq
[i
].rq_pagesz
= old_rq
[i
- 1].rq_pagesz
;
3317 new_rq
[i
].rq_tailsz
= old_rq
[i
- 1].rq_tailsz
;
3318 new_rq
[i
].rq_iov
= old_rq
[i
- 1].rq_iov
;
3319 new_rq
[i
].rq_nvec
= old_rq
[i
- 1].rq_nvec
;
3321 orig_len
+= smb_rqst_len(server
, &old_rq
[i
- 1]);
3323 for (j
= 0; j
< npages
; j
++) {
3324 pages
[j
] = alloc_page(GFP_KERNEL
|__GFP_HIGHMEM
);
3329 /* copy pages form the old */
3330 for (j
= 0; j
< npages
; j
++) {
3332 unsigned int offset
, len
;
3334 rqst_page_get_length(&new_rq
[i
], j
, &len
, &offset
);
3336 dst
= (char *) kmap(new_rq
[i
].rq_pages
[j
]) + offset
;
3337 src
= (char *) kmap(old_rq
[i
- 1].rq_pages
[j
]) + offset
;
3339 memcpy(dst
, src
, len
);
3340 kunmap(new_rq
[i
].rq_pages
[j
]);
3341 kunmap(old_rq
[i
- 1].rq_pages
[j
]);
3345 /* fill the 1st iov with a transform header */
3346 fill_transform_hdr(tr_hdr
, orig_len
, old_rq
);
3348 rc
= crypt_message(server
, num_rqst
, new_rq
, 1);
3349 cifs_dbg(FYI
, "encrypt message returned %d", rc
);
3356 smb3_free_compound_rqst(num_rqst
- 1, &new_rq
[1]);
3361 smb3_is_transform_hdr(void *buf
)
3363 struct smb2_transform_hdr
*trhdr
= buf
;
3365 return trhdr
->ProtocolId
== SMB2_TRANSFORM_PROTO_NUM
;
3369 decrypt_raw_data(struct TCP_Server_Info
*server
, char *buf
,
3370 unsigned int buf_data_size
, struct page
**pages
,
3371 unsigned int npages
, unsigned int page_data_size
)
3374 struct smb_rqst rqst
= {NULL
};
3377 iov
[0].iov_base
= buf
;
3378 iov
[0].iov_len
= sizeof(struct smb2_transform_hdr
);
3379 iov
[1].iov_base
= buf
+ sizeof(struct smb2_transform_hdr
);
3380 iov
[1].iov_len
= buf_data_size
;
3384 rqst
.rq_pages
= pages
;
3385 rqst
.rq_npages
= npages
;
3386 rqst
.rq_pagesz
= PAGE_SIZE
;
3387 rqst
.rq_tailsz
= (page_data_size
% PAGE_SIZE
) ? : PAGE_SIZE
;
3389 rc
= crypt_message(server
, 1, &rqst
, 0);
3390 cifs_dbg(FYI
, "decrypt message returned %d\n", rc
);
3395 memmove(buf
, iov
[1].iov_base
, buf_data_size
);
3397 server
->total_read
= buf_data_size
+ page_data_size
;
3403 read_data_into_pages(struct TCP_Server_Info
*server
, struct page
**pages
,
3404 unsigned int npages
, unsigned int len
)
3409 for (i
= 0; i
< npages
; i
++) {
3410 struct page
*page
= pages
[i
];
3414 if (len
>= PAGE_SIZE
) {
3415 /* enough data to fill the page */
3419 zero_user(page
, len
, PAGE_SIZE
- len
);
3422 length
= cifs_read_page_from_socket(server
, page
, 0, n
);
3425 server
->total_read
+= length
;
3432 init_read_bvec(struct page
**pages
, unsigned int npages
, unsigned int data_size
,
3433 unsigned int cur_off
, struct bio_vec
**page_vec
)
3435 struct bio_vec
*bvec
;
3438 bvec
= kcalloc(npages
, sizeof(struct bio_vec
), GFP_KERNEL
);
3442 for (i
= 0; i
< npages
; i
++) {
3443 bvec
[i
].bv_page
= pages
[i
];
3444 bvec
[i
].bv_offset
= (i
== 0) ? cur_off
: 0;
3445 bvec
[i
].bv_len
= min_t(unsigned int, PAGE_SIZE
, data_size
);
3446 data_size
-= bvec
[i
].bv_len
;
3449 if (data_size
!= 0) {
3450 cifs_dbg(VFS
, "%s: something went wrong\n", __func__
);
3460 handle_read_data(struct TCP_Server_Info
*server
, struct mid_q_entry
*mid
,
3461 char *buf
, unsigned int buf_len
, struct page
**pages
,
3462 unsigned int npages
, unsigned int page_data_size
)
3464 unsigned int data_offset
;
3465 unsigned int data_len
;
3466 unsigned int cur_off
;
3467 unsigned int cur_page_idx
;
3468 unsigned int pad_len
;
3469 struct cifs_readdata
*rdata
= mid
->callback_data
;
3470 struct smb2_sync_hdr
*shdr
= (struct smb2_sync_hdr
*)buf
;
3471 struct bio_vec
*bvec
= NULL
;
3472 struct iov_iter iter
;
3475 bool use_rdma_mr
= false;
3477 if (shdr
->Command
!= SMB2_READ
) {
3478 cifs_dbg(VFS
, "only big read responses are supported\n");
3482 if (server
->ops
->is_session_expired
&&
3483 server
->ops
->is_session_expired(buf
)) {
3484 cifs_reconnect(server
);
3485 wake_up(&server
->response_q
);
3489 if (server
->ops
->is_status_pending
&&
3490 server
->ops
->is_status_pending(buf
, server
))
3493 /* set up first two iov to get credits */
3494 rdata
->iov
[0].iov_base
= buf
;
3495 rdata
->iov
[0].iov_len
= 0;
3496 rdata
->iov
[1].iov_base
= buf
;
3497 rdata
->iov
[1].iov_len
=
3498 min_t(unsigned int, buf_len
, server
->vals
->read_rsp_size
);
3499 cifs_dbg(FYI
, "0: iov_base=%p iov_len=%zu\n",
3500 rdata
->iov
[0].iov_base
, rdata
->iov
[0].iov_len
);
3501 cifs_dbg(FYI
, "1: iov_base=%p iov_len=%zu\n",
3502 rdata
->iov
[1].iov_base
, rdata
->iov
[1].iov_len
);
3504 rdata
->result
= server
->ops
->map_error(buf
, true);
3505 if (rdata
->result
!= 0) {
3506 cifs_dbg(FYI
, "%s: server returned error %d\n",
3507 __func__
, rdata
->result
);
3508 /* normal error on read response */
3509 dequeue_mid(mid
, false);
3513 data_offset
= server
->ops
->read_data_offset(buf
);
3514 #ifdef CONFIG_CIFS_SMB_DIRECT
3515 use_rdma_mr
= rdata
->mr
;
3517 data_len
= server
->ops
->read_data_length(buf
, use_rdma_mr
);
3519 if (data_offset
< server
->vals
->read_rsp_size
) {
3521 * win2k8 sometimes sends an offset of 0 when the read
3522 * is beyond the EOF. Treat it as if the data starts just after
3525 cifs_dbg(FYI
, "%s: data offset (%u) inside read response header\n",
3526 __func__
, data_offset
);
3527 data_offset
= server
->vals
->read_rsp_size
;
3528 } else if (data_offset
> MAX_CIFS_SMALL_BUFFER_SIZE
) {
3529 /* data_offset is beyond the end of smallbuf */
3530 cifs_dbg(FYI
, "%s: data offset (%u) beyond end of smallbuf\n",
3531 __func__
, data_offset
);
3532 rdata
->result
= -EIO
;
3533 dequeue_mid(mid
, rdata
->result
);
3537 pad_len
= data_offset
- server
->vals
->read_rsp_size
;
3539 if (buf_len
<= data_offset
) {
3540 /* read response payload is in pages */
3541 cur_page_idx
= pad_len
/ PAGE_SIZE
;
3542 cur_off
= pad_len
% PAGE_SIZE
;
3544 if (cur_page_idx
!= 0) {
3545 /* data offset is beyond the 1st page of response */
3546 cifs_dbg(FYI
, "%s: data offset (%u) beyond 1st page of response\n",
3547 __func__
, data_offset
);
3548 rdata
->result
= -EIO
;
3549 dequeue_mid(mid
, rdata
->result
);
3553 if (data_len
> page_data_size
- pad_len
) {
3554 /* data_len is corrupt -- discard frame */
3555 rdata
->result
= -EIO
;
3556 dequeue_mid(mid
, rdata
->result
);
3560 rdata
->result
= init_read_bvec(pages
, npages
, page_data_size
,
3562 if (rdata
->result
!= 0) {
3563 dequeue_mid(mid
, rdata
->result
);
3567 iov_iter_bvec(&iter
, WRITE
, bvec
, npages
, data_len
);
3568 } else if (buf_len
>= data_offset
+ data_len
) {
3569 /* read response payload is in buf */
3570 WARN_ONCE(npages
> 0, "read data can be either in buf or in pages");
3571 iov
.iov_base
= buf
+ data_offset
;
3572 iov
.iov_len
= data_len
;
3573 iov_iter_kvec(&iter
, WRITE
, &iov
, 1, data_len
);
3575 /* read response payload cannot be in both buf and pages */
3576 WARN_ONCE(1, "buf can not contain only a part of read data");
3577 rdata
->result
= -EIO
;
3578 dequeue_mid(mid
, rdata
->result
);
3582 length
= rdata
->copy_into_pages(server
, rdata
, &iter
);
3589 dequeue_mid(mid
, false);
3594 receive_encrypted_read(struct TCP_Server_Info
*server
, struct mid_q_entry
**mid
)
3596 char *buf
= server
->smallbuf
;
3597 struct smb2_transform_hdr
*tr_hdr
= (struct smb2_transform_hdr
*)buf
;
3598 unsigned int npages
;
3599 struct page
**pages
;
3601 unsigned int buflen
= server
->pdu_size
;
3605 len
= min_t(unsigned int, buflen
, server
->vals
->read_rsp_size
+
3606 sizeof(struct smb2_transform_hdr
)) - HEADER_SIZE(server
) + 1;
3608 rc
= cifs_read_from_socket(server
, buf
+ HEADER_SIZE(server
) - 1, len
);
3611 server
->total_read
+= rc
;
3613 len
= le32_to_cpu(tr_hdr
->OriginalMessageSize
) -
3614 server
->vals
->read_rsp_size
;
3615 npages
= DIV_ROUND_UP(len
, PAGE_SIZE
);
3617 pages
= kmalloc_array(npages
, sizeof(struct page
*), GFP_KERNEL
);
3623 for (; i
< npages
; i
++) {
3624 pages
[i
] = alloc_page(GFP_KERNEL
|__GFP_HIGHMEM
);
3631 /* read read data into pages */
3632 rc
= read_data_into_pages(server
, pages
, npages
, len
);
3636 rc
= cifs_discard_remaining_data(server
);
3640 rc
= decrypt_raw_data(server
, buf
, server
->vals
->read_rsp_size
,
3641 pages
, npages
, len
);
3645 *mid
= smb2_find_mid(server
, buf
);
3647 cifs_dbg(FYI
, "mid not found\n");
3649 cifs_dbg(FYI
, "mid found\n");
3650 (*mid
)->decrypted
= true;
3651 rc
= handle_read_data(server
, *mid
, buf
,
3652 server
->vals
->read_rsp_size
,
3653 pages
, npages
, len
);
3657 for (i
= i
- 1; i
>= 0; i
--)
3662 cifs_discard_remaining_data(server
);
3667 receive_encrypted_standard(struct TCP_Server_Info
*server
,
3668 struct mid_q_entry
**mids
, char **bufs
,
3672 char *buf
= server
->smallbuf
;
3674 struct smb2_sync_hdr
*shdr
;
3675 unsigned int pdu_length
= server
->pdu_size
;
3676 unsigned int buf_size
;
3677 struct mid_q_entry
*mid_entry
;
3679 char *next_buffer
= NULL
;
3683 /* switch to large buffer if too big for a small one */
3684 if (pdu_length
> MAX_CIFS_SMALL_BUFFER_SIZE
) {
3685 server
->large_buf
= true;
3686 memcpy(server
->bigbuf
, buf
, server
->total_read
);
3687 buf
= server
->bigbuf
;
3690 /* now read the rest */
3691 length
= cifs_read_from_socket(server
, buf
+ HEADER_SIZE(server
) - 1,
3692 pdu_length
- HEADER_SIZE(server
) + 1);
3695 server
->total_read
+= length
;
3697 buf_size
= pdu_length
- sizeof(struct smb2_transform_hdr
);
3698 length
= decrypt_raw_data(server
, buf
, buf_size
, NULL
, 0, 0);
3702 next_is_large
= server
->large_buf
;
3704 shdr
= (struct smb2_sync_hdr
*)buf
;
3705 if (shdr
->NextCommand
) {
3706 if (next_is_large
) {
3707 tmpbuf
= server
->bigbuf
;
3708 next_buffer
= (char *)cifs_buf_get();
3710 tmpbuf
= server
->smallbuf
;
3711 next_buffer
= (char *)cifs_small_buf_get();
3714 tmpbuf
+ le32_to_cpu(shdr
->NextCommand
),
3715 pdu_length
- le32_to_cpu(shdr
->NextCommand
));
3718 mid_entry
= smb2_find_mid(server
, buf
);
3719 if (mid_entry
== NULL
)
3720 cifs_dbg(FYI
, "mid not found\n");
3722 cifs_dbg(FYI
, "mid found\n");
3723 mid_entry
->decrypted
= true;
3724 mid_entry
->resp_buf_size
= server
->pdu_size
;
3727 if (*num_mids
>= MAX_COMPOUND
) {
3728 cifs_dbg(VFS
, "too many PDUs in compound\n");
3731 bufs
[*num_mids
] = buf
;
3732 mids
[(*num_mids
)++] = mid_entry
;
3734 if (mid_entry
&& mid_entry
->handle
)
3735 ret
= mid_entry
->handle(server
, mid_entry
);
3737 ret
= cifs_handle_standard(server
, mid_entry
);
3739 if (ret
== 0 && shdr
->NextCommand
) {
3740 pdu_length
-= le32_to_cpu(shdr
->NextCommand
);
3741 server
->large_buf
= next_is_large
;
3743 server
->bigbuf
= next_buffer
;
3745 server
->smallbuf
= next_buffer
;
3747 buf
+= le32_to_cpu(shdr
->NextCommand
);
3755 smb3_receive_transform(struct TCP_Server_Info
*server
,
3756 struct mid_q_entry
**mids
, char **bufs
, int *num_mids
)
3758 char *buf
= server
->smallbuf
;
3759 unsigned int pdu_length
= server
->pdu_size
;
3760 struct smb2_transform_hdr
*tr_hdr
= (struct smb2_transform_hdr
*)buf
;
3761 unsigned int orig_len
= le32_to_cpu(tr_hdr
->OriginalMessageSize
);
3763 if (pdu_length
< sizeof(struct smb2_transform_hdr
) +
3764 sizeof(struct smb2_sync_hdr
)) {
3765 cifs_dbg(VFS
, "Transform message is too small (%u)\n",
3767 cifs_reconnect(server
);
3768 wake_up(&server
->response_q
);
3769 return -ECONNABORTED
;
3772 if (pdu_length
< orig_len
+ sizeof(struct smb2_transform_hdr
)) {
3773 cifs_dbg(VFS
, "Transform message is broken\n");
3774 cifs_reconnect(server
);
3775 wake_up(&server
->response_q
);
3776 return -ECONNABORTED
;
3779 /* TODO: add support for compounds containing READ. */
3780 if (pdu_length
> CIFSMaxBufSize
+ MAX_HEADER_SIZE(server
)) {
3782 return receive_encrypted_read(server
, &mids
[0]);
3785 return receive_encrypted_standard(server
, mids
, bufs
, num_mids
);
3789 smb3_handle_read_data(struct TCP_Server_Info
*server
, struct mid_q_entry
*mid
)
3791 char *buf
= server
->large_buf
? server
->bigbuf
: server
->smallbuf
;
3793 return handle_read_data(server
, mid
, buf
, server
->pdu_size
,
3798 smb2_next_header(char *buf
)
3800 struct smb2_sync_hdr
*hdr
= (struct smb2_sync_hdr
*)buf
;
3801 struct smb2_transform_hdr
*t_hdr
= (struct smb2_transform_hdr
*)buf
;
3803 if (hdr
->ProtocolId
== SMB2_TRANSFORM_PROTO_NUM
)
3804 return sizeof(struct smb2_transform_hdr
) +
3805 le32_to_cpu(t_hdr
->OriginalMessageSize
);
3807 return le32_to_cpu(hdr
->NextCommand
);
3811 smb2_make_node(unsigned int xid
, struct inode
*inode
,
3812 struct dentry
*dentry
, struct cifs_tcon
*tcon
,
3813 char *full_path
, umode_t mode
, dev_t dev
)
3815 struct cifs_sb_info
*cifs_sb
= CIFS_SB(inode
->i_sb
);
3817 int create_options
= CREATE_NOT_DIR
| CREATE_OPTION_SPECIAL
;
3818 FILE_ALL_INFO
*buf
= NULL
;
3819 struct cifs_io_parms io_parms
;
3821 struct cifs_fid fid
;
3822 struct cifs_open_parms oparms
;
3823 unsigned int bytes_written
;
3824 struct win_dev
*pdev
;
3828 * Check if mounted with mount parm 'sfu' mount parm.
3829 * SFU emulation should work with all servers, but only
3830 * supports block and char device (no socket & fifo),
3831 * and was used by default in earlier versions of Windows
3833 if (!(cifs_sb
->mnt_cifs_flags
& CIFS_MOUNT_UNX_EMUL
))
3837 * TODO: Add ability to create instead via reparse point. Windows (e.g.
3838 * their current NFS server) uses this approach to expose special files
3839 * over SMB2/SMB3 and Samba will do this with SMB3.1.1 POSIX Extensions
3842 if (!S_ISCHR(mode
) && !S_ISBLK(mode
))
3845 cifs_dbg(FYI
, "sfu compat create special file\n");
3847 buf
= kmalloc(sizeof(FILE_ALL_INFO
), GFP_KERNEL
);
3853 if (backup_cred(cifs_sb
))
3854 create_options
|= CREATE_OPEN_BACKUP_INTENT
;
3857 oparms
.cifs_sb
= cifs_sb
;
3858 oparms
.desired_access
= GENERIC_WRITE
;
3859 oparms
.create_options
= create_options
;
3860 oparms
.disposition
= FILE_CREATE
;
3861 oparms
.path
= full_path
;
3863 oparms
.reconnect
= false;
3865 if (tcon
->ses
->server
->oplocks
)
3866 oplock
= REQ_OPLOCK
;
3869 rc
= tcon
->ses
->server
->ops
->open(xid
, &oparms
, &oplock
, buf
);
3874 * BB Do not bother to decode buf since no local inode yet to put
3875 * timestamps in, but we can reuse it safely.
3878 pdev
= (struct win_dev
*)buf
;
3879 io_parms
.pid
= current
->tgid
;
3880 io_parms
.tcon
= tcon
;
3881 io_parms
.offset
= 0;
3882 io_parms
.length
= sizeof(struct win_dev
);
3883 iov
[1].iov_base
= buf
;
3884 iov
[1].iov_len
= sizeof(struct win_dev
);
3885 if (S_ISCHR(mode
)) {
3886 memcpy(pdev
->type
, "IntxCHR", 8);
3887 pdev
->major
= cpu_to_le64(MAJOR(dev
));
3888 pdev
->minor
= cpu_to_le64(MINOR(dev
));
3889 rc
= tcon
->ses
->server
->ops
->sync_write(xid
, &fid
, &io_parms
,
3890 &bytes_written
, iov
, 1);
3891 } else if (S_ISBLK(mode
)) {
3892 memcpy(pdev
->type
, "IntxBLK", 8);
3893 pdev
->major
= cpu_to_le64(MAJOR(dev
));
3894 pdev
->minor
= cpu_to_le64(MINOR(dev
));
3895 rc
= tcon
->ses
->server
->ops
->sync_write(xid
, &fid
, &io_parms
,
3896 &bytes_written
, iov
, 1);
3898 tcon
->ses
->server
->ops
->close(xid
, tcon
, &fid
);
3901 /* FIXME: add code here to set EAs */
3908 struct smb_version_operations smb20_operations
= {
3909 .compare_fids
= smb2_compare_fids
,
3910 .setup_request
= smb2_setup_request
,
3911 .setup_async_request
= smb2_setup_async_request
,
3912 .check_receive
= smb2_check_receive
,
3913 .add_credits
= smb2_add_credits
,
3914 .set_credits
= smb2_set_credits
,
3915 .get_credits_field
= smb2_get_credits_field
,
3916 .get_credits
= smb2_get_credits
,
3917 .wait_mtu_credits
= cifs_wait_mtu_credits
,
3918 .get_next_mid
= smb2_get_next_mid
,
3919 .revert_current_mid
= smb2_revert_current_mid
,
3920 .read_data_offset
= smb2_read_data_offset
,
3921 .read_data_length
= smb2_read_data_length
,
3922 .map_error
= map_smb2_to_linux_error
,
3923 .find_mid
= smb2_find_mid
,
3924 .check_message
= smb2_check_message
,
3925 .dump_detail
= smb2_dump_detail
,
3926 .clear_stats
= smb2_clear_stats
,
3927 .print_stats
= smb2_print_stats
,
3928 .is_oplock_break
= smb2_is_valid_oplock_break
,
3929 .handle_cancelled_mid
= smb2_handle_cancelled_mid
,
3930 .downgrade_oplock
= smb2_downgrade_oplock
,
3931 .need_neg
= smb2_need_neg
,
3932 .negotiate
= smb2_negotiate
,
3933 .negotiate_wsize
= smb2_negotiate_wsize
,
3934 .negotiate_rsize
= smb2_negotiate_rsize
,
3935 .sess_setup
= SMB2_sess_setup
,
3936 .logoff
= SMB2_logoff
,
3937 .tree_connect
= SMB2_tcon
,
3938 .tree_disconnect
= SMB2_tdis
,
3939 .qfs_tcon
= smb2_qfs_tcon
,
3940 .is_path_accessible
= smb2_is_path_accessible
,
3941 .can_echo
= smb2_can_echo
,
3943 .query_path_info
= smb2_query_path_info
,
3944 .get_srv_inum
= smb2_get_srv_inum
,
3945 .query_file_info
= smb2_query_file_info
,
3946 .set_path_size
= smb2_set_path_size
,
3947 .set_file_size
= smb2_set_file_size
,
3948 .set_file_info
= smb2_set_file_info
,
3949 .set_compression
= smb2_set_compression
,
3950 .mkdir
= smb2_mkdir
,
3951 .mkdir_setinfo
= smb2_mkdir_setinfo
,
3952 .rmdir
= smb2_rmdir
,
3953 .unlink
= smb2_unlink
,
3954 .rename
= smb2_rename_path
,
3955 .create_hardlink
= smb2_create_hardlink
,
3956 .query_symlink
= smb2_query_symlink
,
3957 .query_mf_symlink
= smb3_query_mf_symlink
,
3958 .create_mf_symlink
= smb3_create_mf_symlink
,
3959 .open
= smb2_open_file
,
3960 .set_fid
= smb2_set_fid
,
3961 .close
= smb2_close_file
,
3962 .flush
= smb2_flush_file
,
3963 .async_readv
= smb2_async_readv
,
3964 .async_writev
= smb2_async_writev
,
3965 .sync_read
= smb2_sync_read
,
3966 .sync_write
= smb2_sync_write
,
3967 .query_dir_first
= smb2_query_dir_first
,
3968 .query_dir_next
= smb2_query_dir_next
,
3969 .close_dir
= smb2_close_dir
,
3970 .calc_smb_size
= smb2_calc_size
,
3971 .is_status_pending
= smb2_is_status_pending
,
3972 .is_session_expired
= smb2_is_session_expired
,
3973 .oplock_response
= smb2_oplock_response
,
3974 .queryfs
= smb2_queryfs
,
3975 .mand_lock
= smb2_mand_lock
,
3976 .mand_unlock_range
= smb2_unlock_range
,
3977 .push_mand_locks
= smb2_push_mandatory_locks
,
3978 .get_lease_key
= smb2_get_lease_key
,
3979 .set_lease_key
= smb2_set_lease_key
,
3980 .new_lease_key
= smb2_new_lease_key
,
3981 .calc_signature
= smb2_calc_signature
,
3982 .is_read_op
= smb2_is_read_op
,
3983 .set_oplock_level
= smb2_set_oplock_level
,
3984 .create_lease_buf
= smb2_create_lease_buf
,
3985 .parse_lease_buf
= smb2_parse_lease_buf
,
3986 .copychunk_range
= smb2_copychunk_range
,
3987 .wp_retry_size
= smb2_wp_retry_size
,
3988 .dir_needs_close
= smb2_dir_needs_close
,
3989 .get_dfs_refer
= smb2_get_dfs_refer
,
3990 .select_sectype
= smb2_select_sectype
,
3991 #ifdef CONFIG_CIFS_XATTR
3992 .query_all_EAs
= smb2_query_eas
,
3993 .set_EA
= smb2_set_ea
,
3994 #endif /* CIFS_XATTR */
3995 #ifdef CONFIG_CIFS_ACL
3996 .get_acl
= get_smb2_acl
,
3997 .get_acl_by_fid
= get_smb2_acl_by_fid
,
3998 .set_acl
= set_smb2_acl
,
3999 #endif /* CIFS_ACL */
4000 .next_header
= smb2_next_header
,
4001 .ioctl_query_info
= smb2_ioctl_query_info
,
4002 .make_node
= smb2_make_node
,
4005 struct smb_version_operations smb21_operations
= {
4006 .compare_fids
= smb2_compare_fids
,
4007 .setup_request
= smb2_setup_request
,
4008 .setup_async_request
= smb2_setup_async_request
,
4009 .check_receive
= smb2_check_receive
,
4010 .add_credits
= smb2_add_credits
,
4011 .set_credits
= smb2_set_credits
,
4012 .get_credits_field
= smb2_get_credits_field
,
4013 .get_credits
= smb2_get_credits
,
4014 .wait_mtu_credits
= smb2_wait_mtu_credits
,
4015 .adjust_credits
= smb2_adjust_credits
,
4016 .get_next_mid
= smb2_get_next_mid
,
4017 .revert_current_mid
= smb2_revert_current_mid
,
4018 .read_data_offset
= smb2_read_data_offset
,
4019 .read_data_length
= smb2_read_data_length
,
4020 .map_error
= map_smb2_to_linux_error
,
4021 .find_mid
= smb2_find_mid
,
4022 .check_message
= smb2_check_message
,
4023 .dump_detail
= smb2_dump_detail
,
4024 .clear_stats
= smb2_clear_stats
,
4025 .print_stats
= smb2_print_stats
,
4026 .is_oplock_break
= smb2_is_valid_oplock_break
,
4027 .handle_cancelled_mid
= smb2_handle_cancelled_mid
,
4028 .downgrade_oplock
= smb21_downgrade_oplock
,
4029 .need_neg
= smb2_need_neg
,
4030 .negotiate
= smb2_negotiate
,
4031 .negotiate_wsize
= smb2_negotiate_wsize
,
4032 .negotiate_rsize
= smb2_negotiate_rsize
,
4033 .sess_setup
= SMB2_sess_setup
,
4034 .logoff
= SMB2_logoff
,
4035 .tree_connect
= SMB2_tcon
,
4036 .tree_disconnect
= SMB2_tdis
,
4037 .qfs_tcon
= smb2_qfs_tcon
,
4038 .is_path_accessible
= smb2_is_path_accessible
,
4039 .can_echo
= smb2_can_echo
,
4041 .query_path_info
= smb2_query_path_info
,
4042 .get_srv_inum
= smb2_get_srv_inum
,
4043 .query_file_info
= smb2_query_file_info
,
4044 .set_path_size
= smb2_set_path_size
,
4045 .set_file_size
= smb2_set_file_size
,
4046 .set_file_info
= smb2_set_file_info
,
4047 .set_compression
= smb2_set_compression
,
4048 .mkdir
= smb2_mkdir
,
4049 .mkdir_setinfo
= smb2_mkdir_setinfo
,
4050 .rmdir
= smb2_rmdir
,
4051 .unlink
= smb2_unlink
,
4052 .rename
= smb2_rename_path
,
4053 .create_hardlink
= smb2_create_hardlink
,
4054 .query_symlink
= smb2_query_symlink
,
4055 .query_mf_symlink
= smb3_query_mf_symlink
,
4056 .create_mf_symlink
= smb3_create_mf_symlink
,
4057 .open
= smb2_open_file
,
4058 .set_fid
= smb2_set_fid
,
4059 .close
= smb2_close_file
,
4060 .flush
= smb2_flush_file
,
4061 .async_readv
= smb2_async_readv
,
4062 .async_writev
= smb2_async_writev
,
4063 .sync_read
= smb2_sync_read
,
4064 .sync_write
= smb2_sync_write
,
4065 .query_dir_first
= smb2_query_dir_first
,
4066 .query_dir_next
= smb2_query_dir_next
,
4067 .close_dir
= smb2_close_dir
,
4068 .calc_smb_size
= smb2_calc_size
,
4069 .is_status_pending
= smb2_is_status_pending
,
4070 .is_session_expired
= smb2_is_session_expired
,
4071 .oplock_response
= smb2_oplock_response
,
4072 .queryfs
= smb2_queryfs
,
4073 .mand_lock
= smb2_mand_lock
,
4074 .mand_unlock_range
= smb2_unlock_range
,
4075 .push_mand_locks
= smb2_push_mandatory_locks
,
4076 .get_lease_key
= smb2_get_lease_key
,
4077 .set_lease_key
= smb2_set_lease_key
,
4078 .new_lease_key
= smb2_new_lease_key
,
4079 .calc_signature
= smb2_calc_signature
,
4080 .is_read_op
= smb21_is_read_op
,
4081 .set_oplock_level
= smb21_set_oplock_level
,
4082 .create_lease_buf
= smb2_create_lease_buf
,
4083 .parse_lease_buf
= smb2_parse_lease_buf
,
4084 .copychunk_range
= smb2_copychunk_range
,
4085 .wp_retry_size
= smb2_wp_retry_size
,
4086 .dir_needs_close
= smb2_dir_needs_close
,
4087 .enum_snapshots
= smb3_enum_snapshots
,
4088 .get_dfs_refer
= smb2_get_dfs_refer
,
4089 .select_sectype
= smb2_select_sectype
,
4090 #ifdef CONFIG_CIFS_XATTR
4091 .query_all_EAs
= smb2_query_eas
,
4092 .set_EA
= smb2_set_ea
,
4093 #endif /* CIFS_XATTR */
4094 #ifdef CONFIG_CIFS_ACL
4095 .get_acl
= get_smb2_acl
,
4096 .get_acl_by_fid
= get_smb2_acl_by_fid
,
4097 .set_acl
= set_smb2_acl
,
4098 #endif /* CIFS_ACL */
4099 .next_header
= smb2_next_header
,
4100 .ioctl_query_info
= smb2_ioctl_query_info
,
4101 .make_node
= smb2_make_node
,
4104 struct smb_version_operations smb30_operations
= {
4105 .compare_fids
= smb2_compare_fids
,
4106 .setup_request
= smb2_setup_request
,
4107 .setup_async_request
= smb2_setup_async_request
,
4108 .check_receive
= smb2_check_receive
,
4109 .add_credits
= smb2_add_credits
,
4110 .set_credits
= smb2_set_credits
,
4111 .get_credits_field
= smb2_get_credits_field
,
4112 .get_credits
= smb2_get_credits
,
4113 .wait_mtu_credits
= smb2_wait_mtu_credits
,
4114 .adjust_credits
= smb2_adjust_credits
,
4115 .get_next_mid
= smb2_get_next_mid
,
4116 .revert_current_mid
= smb2_revert_current_mid
,
4117 .read_data_offset
= smb2_read_data_offset
,
4118 .read_data_length
= smb2_read_data_length
,
4119 .map_error
= map_smb2_to_linux_error
,
4120 .find_mid
= smb2_find_mid
,
4121 .check_message
= smb2_check_message
,
4122 .dump_detail
= smb2_dump_detail
,
4123 .clear_stats
= smb2_clear_stats
,
4124 .print_stats
= smb2_print_stats
,
4125 .dump_share_caps
= smb2_dump_share_caps
,
4126 .is_oplock_break
= smb2_is_valid_oplock_break
,
4127 .handle_cancelled_mid
= smb2_handle_cancelled_mid
,
4128 .downgrade_oplock
= smb21_downgrade_oplock
,
4129 .need_neg
= smb2_need_neg
,
4130 .negotiate
= smb2_negotiate
,
4131 .negotiate_wsize
= smb3_negotiate_wsize
,
4132 .negotiate_rsize
= smb3_negotiate_rsize
,
4133 .sess_setup
= SMB2_sess_setup
,
4134 .logoff
= SMB2_logoff
,
4135 .tree_connect
= SMB2_tcon
,
4136 .tree_disconnect
= SMB2_tdis
,
4137 .qfs_tcon
= smb3_qfs_tcon
,
4138 .is_path_accessible
= smb2_is_path_accessible
,
4139 .can_echo
= smb2_can_echo
,
4141 .query_path_info
= smb2_query_path_info
,
4142 .get_srv_inum
= smb2_get_srv_inum
,
4143 .query_file_info
= smb2_query_file_info
,
4144 .set_path_size
= smb2_set_path_size
,
4145 .set_file_size
= smb2_set_file_size
,
4146 .set_file_info
= smb2_set_file_info
,
4147 .set_compression
= smb2_set_compression
,
4148 .mkdir
= smb2_mkdir
,
4149 .mkdir_setinfo
= smb2_mkdir_setinfo
,
4150 .rmdir
= smb2_rmdir
,
4151 .unlink
= smb2_unlink
,
4152 .rename
= smb2_rename_path
,
4153 .create_hardlink
= smb2_create_hardlink
,
4154 .query_symlink
= smb2_query_symlink
,
4155 .query_mf_symlink
= smb3_query_mf_symlink
,
4156 .create_mf_symlink
= smb3_create_mf_symlink
,
4157 .open
= smb2_open_file
,
4158 .set_fid
= smb2_set_fid
,
4159 .close
= smb2_close_file
,
4160 .flush
= smb2_flush_file
,
4161 .async_readv
= smb2_async_readv
,
4162 .async_writev
= smb2_async_writev
,
4163 .sync_read
= smb2_sync_read
,
4164 .sync_write
= smb2_sync_write
,
4165 .query_dir_first
= smb2_query_dir_first
,
4166 .query_dir_next
= smb2_query_dir_next
,
4167 .close_dir
= smb2_close_dir
,
4168 .calc_smb_size
= smb2_calc_size
,
4169 .is_status_pending
= smb2_is_status_pending
,
4170 .is_session_expired
= smb2_is_session_expired
,
4171 .oplock_response
= smb2_oplock_response
,
4172 .queryfs
= smb2_queryfs
,
4173 .mand_lock
= smb2_mand_lock
,
4174 .mand_unlock_range
= smb2_unlock_range
,
4175 .push_mand_locks
= smb2_push_mandatory_locks
,
4176 .get_lease_key
= smb2_get_lease_key
,
4177 .set_lease_key
= smb2_set_lease_key
,
4178 .new_lease_key
= smb2_new_lease_key
,
4179 .generate_signingkey
= generate_smb30signingkey
,
4180 .calc_signature
= smb3_calc_signature
,
4181 .set_integrity
= smb3_set_integrity
,
4182 .is_read_op
= smb21_is_read_op
,
4183 .set_oplock_level
= smb3_set_oplock_level
,
4184 .create_lease_buf
= smb3_create_lease_buf
,
4185 .parse_lease_buf
= smb3_parse_lease_buf
,
4186 .copychunk_range
= smb2_copychunk_range
,
4187 .duplicate_extents
= smb2_duplicate_extents
,
4188 .validate_negotiate
= smb3_validate_negotiate
,
4189 .wp_retry_size
= smb2_wp_retry_size
,
4190 .dir_needs_close
= smb2_dir_needs_close
,
4191 .fallocate
= smb3_fallocate
,
4192 .enum_snapshots
= smb3_enum_snapshots
,
4193 .init_transform_rq
= smb3_init_transform_rq
,
4194 .is_transform_hdr
= smb3_is_transform_hdr
,
4195 .receive_transform
= smb3_receive_transform
,
4196 .get_dfs_refer
= smb2_get_dfs_refer
,
4197 .select_sectype
= smb2_select_sectype
,
4198 #ifdef CONFIG_CIFS_XATTR
4199 .query_all_EAs
= smb2_query_eas
,
4200 .set_EA
= smb2_set_ea
,
4201 #endif /* CIFS_XATTR */
4202 #ifdef CONFIG_CIFS_ACL
4203 .get_acl
= get_smb2_acl
,
4204 .get_acl_by_fid
= get_smb2_acl_by_fid
,
4205 .set_acl
= set_smb2_acl
,
4206 #endif /* CIFS_ACL */
4207 .next_header
= smb2_next_header
,
4208 .ioctl_query_info
= smb2_ioctl_query_info
,
4209 .make_node
= smb2_make_node
,
4212 struct smb_version_operations smb311_operations
= {
4213 .compare_fids
= smb2_compare_fids
,
4214 .setup_request
= smb2_setup_request
,
4215 .setup_async_request
= smb2_setup_async_request
,
4216 .check_receive
= smb2_check_receive
,
4217 .add_credits
= smb2_add_credits
,
4218 .set_credits
= smb2_set_credits
,
4219 .get_credits_field
= smb2_get_credits_field
,
4220 .get_credits
= smb2_get_credits
,
4221 .wait_mtu_credits
= smb2_wait_mtu_credits
,
4222 .adjust_credits
= smb2_adjust_credits
,
4223 .get_next_mid
= smb2_get_next_mid
,
4224 .revert_current_mid
= smb2_revert_current_mid
,
4225 .read_data_offset
= smb2_read_data_offset
,
4226 .read_data_length
= smb2_read_data_length
,
4227 .map_error
= map_smb2_to_linux_error
,
4228 .find_mid
= smb2_find_mid
,
4229 .check_message
= smb2_check_message
,
4230 .dump_detail
= smb2_dump_detail
,
4231 .clear_stats
= smb2_clear_stats
,
4232 .print_stats
= smb2_print_stats
,
4233 .dump_share_caps
= smb2_dump_share_caps
,
4234 .is_oplock_break
= smb2_is_valid_oplock_break
,
4235 .handle_cancelled_mid
= smb2_handle_cancelled_mid
,
4236 .downgrade_oplock
= smb21_downgrade_oplock
,
4237 .need_neg
= smb2_need_neg
,
4238 .negotiate
= smb2_negotiate
,
4239 .negotiate_wsize
= smb3_negotiate_wsize
,
4240 .negotiate_rsize
= smb3_negotiate_rsize
,
4241 .sess_setup
= SMB2_sess_setup
,
4242 .logoff
= SMB2_logoff
,
4243 .tree_connect
= SMB2_tcon
,
4244 .tree_disconnect
= SMB2_tdis
,
4245 .qfs_tcon
= smb3_qfs_tcon
,
4246 .is_path_accessible
= smb2_is_path_accessible
,
4247 .can_echo
= smb2_can_echo
,
4249 .query_path_info
= smb2_query_path_info
,
4250 .get_srv_inum
= smb2_get_srv_inum
,
4251 .query_file_info
= smb2_query_file_info
,
4252 .set_path_size
= smb2_set_path_size
,
4253 .set_file_size
= smb2_set_file_size
,
4254 .set_file_info
= smb2_set_file_info
,
4255 .set_compression
= smb2_set_compression
,
4256 .mkdir
= smb2_mkdir
,
4257 .mkdir_setinfo
= smb2_mkdir_setinfo
,
4258 .posix_mkdir
= smb311_posix_mkdir
,
4259 .rmdir
= smb2_rmdir
,
4260 .unlink
= smb2_unlink
,
4261 .rename
= smb2_rename_path
,
4262 .create_hardlink
= smb2_create_hardlink
,
4263 .query_symlink
= smb2_query_symlink
,
4264 .query_mf_symlink
= smb3_query_mf_symlink
,
4265 .create_mf_symlink
= smb3_create_mf_symlink
,
4266 .open
= smb2_open_file
,
4267 .set_fid
= smb2_set_fid
,
4268 .close
= smb2_close_file
,
4269 .flush
= smb2_flush_file
,
4270 .async_readv
= smb2_async_readv
,
4271 .async_writev
= smb2_async_writev
,
4272 .sync_read
= smb2_sync_read
,
4273 .sync_write
= smb2_sync_write
,
4274 .query_dir_first
= smb2_query_dir_first
,
4275 .query_dir_next
= smb2_query_dir_next
,
4276 .close_dir
= smb2_close_dir
,
4277 .calc_smb_size
= smb2_calc_size
,
4278 .is_status_pending
= smb2_is_status_pending
,
4279 .is_session_expired
= smb2_is_session_expired
,
4280 .oplock_response
= smb2_oplock_response
,
4281 .queryfs
= smb311_queryfs
,
4282 .mand_lock
= smb2_mand_lock
,
4283 .mand_unlock_range
= smb2_unlock_range
,
4284 .push_mand_locks
= smb2_push_mandatory_locks
,
4285 .get_lease_key
= smb2_get_lease_key
,
4286 .set_lease_key
= smb2_set_lease_key
,
4287 .new_lease_key
= smb2_new_lease_key
,
4288 .generate_signingkey
= generate_smb311signingkey
,
4289 .calc_signature
= smb3_calc_signature
,
4290 .set_integrity
= smb3_set_integrity
,
4291 .is_read_op
= smb21_is_read_op
,
4292 .set_oplock_level
= smb3_set_oplock_level
,
4293 .create_lease_buf
= smb3_create_lease_buf
,
4294 .parse_lease_buf
= smb3_parse_lease_buf
,
4295 .copychunk_range
= smb2_copychunk_range
,
4296 .duplicate_extents
= smb2_duplicate_extents
,
4297 /* .validate_negotiate = smb3_validate_negotiate, */ /* not used in 3.11 */
4298 .wp_retry_size
= smb2_wp_retry_size
,
4299 .dir_needs_close
= smb2_dir_needs_close
,
4300 .fallocate
= smb3_fallocate
,
4301 .enum_snapshots
= smb3_enum_snapshots
,
4302 .init_transform_rq
= smb3_init_transform_rq
,
4303 .is_transform_hdr
= smb3_is_transform_hdr
,
4304 .receive_transform
= smb3_receive_transform
,
4305 .get_dfs_refer
= smb2_get_dfs_refer
,
4306 .select_sectype
= smb2_select_sectype
,
4307 #ifdef CONFIG_CIFS_XATTR
4308 .query_all_EAs
= smb2_query_eas
,
4309 .set_EA
= smb2_set_ea
,
4310 #endif /* CIFS_XATTR */
4311 #ifdef CONFIG_CIFS_ACL
4312 .get_acl
= get_smb2_acl
,
4313 .get_acl_by_fid
= get_smb2_acl_by_fid
,
4314 .set_acl
= set_smb2_acl
,
4315 #endif /* CIFS_ACL */
4316 .next_header
= smb2_next_header
,
4317 .ioctl_query_info
= smb2_ioctl_query_info
,
4318 .make_node
= smb2_make_node
,
4321 struct smb_version_values smb20_values
= {
4322 .version_string
= SMB20_VERSION_STRING
,
4323 .protocol_id
= SMB20_PROT_ID
,
4324 .req_capabilities
= 0, /* MBZ */
4325 .large_lock_type
= 0,
4326 .exclusive_lock_type
= SMB2_LOCKFLAG_EXCLUSIVE_LOCK
,
4327 .shared_lock_type
= SMB2_LOCKFLAG_SHARED_LOCK
,
4328 .unlock_lock_type
= SMB2_LOCKFLAG_UNLOCK
,
4329 .header_size
= sizeof(struct smb2_sync_hdr
),
4330 .header_preamble_size
= 0,
4331 .max_header_size
= MAX_SMB2_HDR_SIZE
,
4332 .read_rsp_size
= sizeof(struct smb2_read_rsp
) - 1,
4333 .lock_cmd
= SMB2_LOCK
,
4335 .cap_nt_find
= SMB2_NT_FIND
,
4336 .cap_large_files
= SMB2_LARGE_FILES
,
4337 .signing_enabled
= SMB2_NEGOTIATE_SIGNING_ENABLED
| SMB2_NEGOTIATE_SIGNING_REQUIRED
,
4338 .signing_required
= SMB2_NEGOTIATE_SIGNING_REQUIRED
,
4339 .create_lease_size
= sizeof(struct create_lease
),
4342 struct smb_version_values smb21_values
= {
4343 .version_string
= SMB21_VERSION_STRING
,
4344 .protocol_id
= SMB21_PROT_ID
,
4345 .req_capabilities
= 0, /* MBZ on negotiate req until SMB3 dialect */
4346 .large_lock_type
= 0,
4347 .exclusive_lock_type
= SMB2_LOCKFLAG_EXCLUSIVE_LOCK
,
4348 .shared_lock_type
= SMB2_LOCKFLAG_SHARED_LOCK
,
4349 .unlock_lock_type
= SMB2_LOCKFLAG_UNLOCK
,
4350 .header_size
= sizeof(struct smb2_sync_hdr
),
4351 .header_preamble_size
= 0,
4352 .max_header_size
= MAX_SMB2_HDR_SIZE
,
4353 .read_rsp_size
= sizeof(struct smb2_read_rsp
) - 1,
4354 .lock_cmd
= SMB2_LOCK
,
4356 .cap_nt_find
= SMB2_NT_FIND
,
4357 .cap_large_files
= SMB2_LARGE_FILES
,
4358 .signing_enabled
= SMB2_NEGOTIATE_SIGNING_ENABLED
| SMB2_NEGOTIATE_SIGNING_REQUIRED
,
4359 .signing_required
= SMB2_NEGOTIATE_SIGNING_REQUIRED
,
4360 .create_lease_size
= sizeof(struct create_lease
),
4363 struct smb_version_values smb3any_values
= {
4364 .version_string
= SMB3ANY_VERSION_STRING
,
4365 .protocol_id
= SMB302_PROT_ID
, /* doesn't matter, send protocol array */
4366 .req_capabilities
= SMB2_GLOBAL_CAP_DFS
| SMB2_GLOBAL_CAP_LEASING
| SMB2_GLOBAL_CAP_LARGE_MTU
| SMB2_GLOBAL_CAP_PERSISTENT_HANDLES
| SMB2_GLOBAL_CAP_ENCRYPTION
| SMB2_GLOBAL_CAP_DIRECTORY_LEASING
,
4367 .large_lock_type
= 0,
4368 .exclusive_lock_type
= SMB2_LOCKFLAG_EXCLUSIVE_LOCK
,
4369 .shared_lock_type
= SMB2_LOCKFLAG_SHARED_LOCK
,
4370 .unlock_lock_type
= SMB2_LOCKFLAG_UNLOCK
,
4371 .header_size
= sizeof(struct smb2_sync_hdr
),
4372 .header_preamble_size
= 0,
4373 .max_header_size
= MAX_SMB2_HDR_SIZE
,
4374 .read_rsp_size
= sizeof(struct smb2_read_rsp
) - 1,
4375 .lock_cmd
= SMB2_LOCK
,
4377 .cap_nt_find
= SMB2_NT_FIND
,
4378 .cap_large_files
= SMB2_LARGE_FILES
,
4379 .signing_enabled
= SMB2_NEGOTIATE_SIGNING_ENABLED
| SMB2_NEGOTIATE_SIGNING_REQUIRED
,
4380 .signing_required
= SMB2_NEGOTIATE_SIGNING_REQUIRED
,
4381 .create_lease_size
= sizeof(struct create_lease_v2
),
4384 struct smb_version_values smbdefault_values
= {
4385 .version_string
= SMBDEFAULT_VERSION_STRING
,
4386 .protocol_id
= SMB302_PROT_ID
, /* doesn't matter, send protocol array */
4387 .req_capabilities
= SMB2_GLOBAL_CAP_DFS
| SMB2_GLOBAL_CAP_LEASING
| SMB2_GLOBAL_CAP_LARGE_MTU
| SMB2_GLOBAL_CAP_PERSISTENT_HANDLES
| SMB2_GLOBAL_CAP_ENCRYPTION
| SMB2_GLOBAL_CAP_DIRECTORY_LEASING
,
4388 .large_lock_type
= 0,
4389 .exclusive_lock_type
= SMB2_LOCKFLAG_EXCLUSIVE_LOCK
,
4390 .shared_lock_type
= SMB2_LOCKFLAG_SHARED_LOCK
,
4391 .unlock_lock_type
= SMB2_LOCKFLAG_UNLOCK
,
4392 .header_size
= sizeof(struct smb2_sync_hdr
),
4393 .header_preamble_size
= 0,
4394 .max_header_size
= MAX_SMB2_HDR_SIZE
,
4395 .read_rsp_size
= sizeof(struct smb2_read_rsp
) - 1,
4396 .lock_cmd
= SMB2_LOCK
,
4398 .cap_nt_find
= SMB2_NT_FIND
,
4399 .cap_large_files
= SMB2_LARGE_FILES
,
4400 .signing_enabled
= SMB2_NEGOTIATE_SIGNING_ENABLED
| SMB2_NEGOTIATE_SIGNING_REQUIRED
,
4401 .signing_required
= SMB2_NEGOTIATE_SIGNING_REQUIRED
,
4402 .create_lease_size
= sizeof(struct create_lease_v2
),
4405 struct smb_version_values smb30_values
= {
4406 .version_string
= SMB30_VERSION_STRING
,
4407 .protocol_id
= SMB30_PROT_ID
,
4408 .req_capabilities
= SMB2_GLOBAL_CAP_DFS
| SMB2_GLOBAL_CAP_LEASING
| SMB2_GLOBAL_CAP_LARGE_MTU
| SMB2_GLOBAL_CAP_PERSISTENT_HANDLES
| SMB2_GLOBAL_CAP_ENCRYPTION
| SMB2_GLOBAL_CAP_DIRECTORY_LEASING
,
4409 .large_lock_type
= 0,
4410 .exclusive_lock_type
= SMB2_LOCKFLAG_EXCLUSIVE_LOCK
,
4411 .shared_lock_type
= SMB2_LOCKFLAG_SHARED_LOCK
,
4412 .unlock_lock_type
= SMB2_LOCKFLAG_UNLOCK
,
4413 .header_size
= sizeof(struct smb2_sync_hdr
),
4414 .header_preamble_size
= 0,
4415 .max_header_size
= MAX_SMB2_HDR_SIZE
,
4416 .read_rsp_size
= sizeof(struct smb2_read_rsp
) - 1,
4417 .lock_cmd
= SMB2_LOCK
,
4419 .cap_nt_find
= SMB2_NT_FIND
,
4420 .cap_large_files
= SMB2_LARGE_FILES
,
4421 .signing_enabled
= SMB2_NEGOTIATE_SIGNING_ENABLED
| SMB2_NEGOTIATE_SIGNING_REQUIRED
,
4422 .signing_required
= SMB2_NEGOTIATE_SIGNING_REQUIRED
,
4423 .create_lease_size
= sizeof(struct create_lease_v2
),
4426 struct smb_version_values smb302_values
= {
4427 .version_string
= SMB302_VERSION_STRING
,
4428 .protocol_id
= SMB302_PROT_ID
,
4429 .req_capabilities
= SMB2_GLOBAL_CAP_DFS
| SMB2_GLOBAL_CAP_LEASING
| SMB2_GLOBAL_CAP_LARGE_MTU
| SMB2_GLOBAL_CAP_PERSISTENT_HANDLES
| SMB2_GLOBAL_CAP_ENCRYPTION
| SMB2_GLOBAL_CAP_DIRECTORY_LEASING
,
4430 .large_lock_type
= 0,
4431 .exclusive_lock_type
= SMB2_LOCKFLAG_EXCLUSIVE_LOCK
,
4432 .shared_lock_type
= SMB2_LOCKFLAG_SHARED_LOCK
,
4433 .unlock_lock_type
= SMB2_LOCKFLAG_UNLOCK
,
4434 .header_size
= sizeof(struct smb2_sync_hdr
),
4435 .header_preamble_size
= 0,
4436 .max_header_size
= MAX_SMB2_HDR_SIZE
,
4437 .read_rsp_size
= sizeof(struct smb2_read_rsp
) - 1,
4438 .lock_cmd
= SMB2_LOCK
,
4440 .cap_nt_find
= SMB2_NT_FIND
,
4441 .cap_large_files
= SMB2_LARGE_FILES
,
4442 .signing_enabled
= SMB2_NEGOTIATE_SIGNING_ENABLED
| SMB2_NEGOTIATE_SIGNING_REQUIRED
,
4443 .signing_required
= SMB2_NEGOTIATE_SIGNING_REQUIRED
,
4444 .create_lease_size
= sizeof(struct create_lease_v2
),
4447 struct smb_version_values smb311_values
= {
4448 .version_string
= SMB311_VERSION_STRING
,
4449 .protocol_id
= SMB311_PROT_ID
,
4450 .req_capabilities
= SMB2_GLOBAL_CAP_DFS
| SMB2_GLOBAL_CAP_LEASING
| SMB2_GLOBAL_CAP_LARGE_MTU
| SMB2_GLOBAL_CAP_PERSISTENT_HANDLES
| SMB2_GLOBAL_CAP_ENCRYPTION
| SMB2_GLOBAL_CAP_DIRECTORY_LEASING
,
4451 .large_lock_type
= 0,
4452 .exclusive_lock_type
= SMB2_LOCKFLAG_EXCLUSIVE_LOCK
,
4453 .shared_lock_type
= SMB2_LOCKFLAG_SHARED_LOCK
,
4454 .unlock_lock_type
= SMB2_LOCKFLAG_UNLOCK
,
4455 .header_size
= sizeof(struct smb2_sync_hdr
),
4456 .header_preamble_size
= 0,
4457 .max_header_size
= MAX_SMB2_HDR_SIZE
,
4458 .read_rsp_size
= sizeof(struct smb2_read_rsp
) - 1,
4459 .lock_cmd
= SMB2_LOCK
,
4461 .cap_nt_find
= SMB2_NT_FIND
,
4462 .cap_large_files
= SMB2_LARGE_FILES
,
4463 .signing_enabled
= SMB2_NEGOTIATE_SIGNING_ENABLED
| SMB2_NEGOTIATE_SIGNING_REQUIRED
,
4464 .signing_required
= SMB2_NEGOTIATE_SIGNING_REQUIRED
,
4465 .create_lease_size
= sizeof(struct create_lease_v2
),