1 // SPDX-License-Identifier: GPL-2.0
3 * SMB2 version specific operations
5 * Copyright (c) 2012, Jeff Layton <jlayton@redhat.com>
8 #include <linux/pagemap.h>
10 #include <linux/falloc.h>
11 #include <linux/scatterlist.h>
12 #include <linux/uuid.h>
13 #include <linux/sort.h>
14 #include <crypto/aead.h>
17 #include "smb2proto.h"
18 #include "cifsproto.h"
19 #include "cifs_debug.h"
20 #include "cifs_unicode.h"
21 #include "smb2status.h"
23 #include "cifs_ioctl.h"
24 #include "smbdirect.h"
26 /* Change credits for different ops and return the total number of credits */
28 change_conf(struct TCP_Server_Info
*server
)
30 server
->credits
+= server
->echo_credits
+ server
->oplock_credits
;
31 server
->oplock_credits
= server
->echo_credits
= 0;
32 switch (server
->credits
) {
36 server
->echoes
= false;
37 server
->oplocks
= false;
40 server
->echoes
= true;
41 server
->oplocks
= false;
42 server
->echo_credits
= 1;
45 server
->echoes
= true;
47 server
->oplocks
= true;
48 server
->oplock_credits
= 1;
50 server
->oplocks
= false;
52 server
->echo_credits
= 1;
54 server
->credits
-= server
->echo_credits
+ server
->oplock_credits
;
55 return server
->credits
+ server
->echo_credits
+ server
->oplock_credits
;
59 smb2_add_credits(struct TCP_Server_Info
*server
,
60 const struct cifs_credits
*credits
, const int optype
)
63 unsigned int add
= credits
->value
;
64 unsigned int instance
= credits
->instance
;
65 bool reconnect_detected
= false;
67 spin_lock(&server
->req_lock
);
68 val
= server
->ops
->get_credits_field(server
, optype
);
70 /* eg found case where write overlapping reconnect messed up credits */
71 if (((optype
& CIFS_OP_MASK
) == CIFS_NEG_OP
) && (*val
!= 0))
72 trace_smb3_reconnect_with_invalid_credits(server
->CurrentMid
,
73 server
->hostname
, *val
);
74 if ((instance
== 0) || (instance
== server
->reconnect_instance
))
77 reconnect_detected
= true;
80 *val
= 65000; /* Don't get near 64K credits, avoid srv bugs */
81 printk_once(KERN_WARNING
"server overflowed SMB3 credits\n");
84 if (server
->in_flight
== 0 && (optype
& CIFS_OP_MASK
) != CIFS_NEG_OP
)
85 rc
= change_conf(server
);
87 * Sometimes server returns 0 credits on oplock break ack - we need to
88 * rebalance credits in this case.
90 else if (server
->in_flight
> 0 && server
->oplock_credits
== 0 &&
92 if (server
->credits
> 1) {
94 server
->oplock_credits
++;
97 spin_unlock(&server
->req_lock
);
98 wake_up(&server
->request_q
);
100 if (reconnect_detected
)
101 cifs_dbg(FYI
, "trying to put %d credits from the old server instance %d\n",
104 if (server
->tcpStatus
== CifsNeedReconnect
105 || server
->tcpStatus
== CifsExiting
)
110 /* change_conf hasn't been executed */
113 cifs_server_dbg(VFS
, "Possible client or server bug - zero credits\n");
116 cifs_server_dbg(VFS
, "disabling echoes and oplocks\n");
119 cifs_dbg(FYI
, "disabling oplocks\n");
122 cifs_dbg(FYI
, "add %u credits total=%d\n", add
, rc
);
127 smb2_set_credits(struct TCP_Server_Info
*server
, const int val
)
129 spin_lock(&server
->req_lock
);
130 server
->credits
= val
;
132 server
->reconnect_instance
++;
133 spin_unlock(&server
->req_lock
);
134 /* don't log while holding the lock */
136 cifs_dbg(FYI
, "set credits to 1 due to smb2 reconnect\n");
140 smb2_get_credits_field(struct TCP_Server_Info
*server
, const int optype
)
144 return &server
->echo_credits
;
146 return &server
->oplock_credits
;
148 return &server
->credits
;
153 smb2_get_credits(struct mid_q_entry
*mid
)
155 return mid
->credits_received
;
159 smb2_wait_mtu_credits(struct TCP_Server_Info
*server
, unsigned int size
,
160 unsigned int *num
, struct cifs_credits
*credits
)
163 unsigned int scredits
;
165 spin_lock(&server
->req_lock
);
167 if (server
->credits
<= 0) {
168 spin_unlock(&server
->req_lock
);
169 cifs_num_waiters_inc(server
);
170 rc
= wait_event_killable(server
->request_q
,
171 has_credits(server
, &server
->credits
, 1));
172 cifs_num_waiters_dec(server
);
175 spin_lock(&server
->req_lock
);
177 if (server
->tcpStatus
== CifsExiting
) {
178 spin_unlock(&server
->req_lock
);
182 scredits
= server
->credits
;
183 /* can deadlock with reopen */
185 *num
= SMB2_MAX_BUFFER_SIZE
;
187 credits
->instance
= 0;
191 /* leave some credits for reopen and other ops */
193 *num
= min_t(unsigned int, size
,
194 scredits
* SMB2_MAX_BUFFER_SIZE
);
197 DIV_ROUND_UP(*num
, SMB2_MAX_BUFFER_SIZE
);
198 credits
->instance
= server
->reconnect_instance
;
199 server
->credits
-= credits
->value
;
201 if (server
->in_flight
> server
->max_in_flight
)
202 server
->max_in_flight
= server
->in_flight
;
206 spin_unlock(&server
->req_lock
);
211 smb2_adjust_credits(struct TCP_Server_Info
*server
,
212 struct cifs_credits
*credits
,
213 const unsigned int payload_size
)
215 int new_val
= DIV_ROUND_UP(payload_size
, SMB2_MAX_BUFFER_SIZE
);
217 if (!credits
->value
|| credits
->value
== new_val
)
220 if (credits
->value
< new_val
) {
221 WARN_ONCE(1, "request has less credits (%d) than required (%d)",
222 credits
->value
, new_val
);
226 spin_lock(&server
->req_lock
);
228 if (server
->reconnect_instance
!= credits
->instance
) {
229 spin_unlock(&server
->req_lock
);
230 cifs_server_dbg(VFS
, "trying to return %d credits to old session\n",
231 credits
->value
- new_val
);
235 server
->credits
+= credits
->value
- new_val
;
236 spin_unlock(&server
->req_lock
);
237 wake_up(&server
->request_q
);
238 credits
->value
= new_val
;
243 smb2_get_next_mid(struct TCP_Server_Info
*server
)
246 /* for SMB2 we need the current value */
247 spin_lock(&GlobalMid_Lock
);
248 mid
= server
->CurrentMid
++;
249 spin_unlock(&GlobalMid_Lock
);
254 smb2_revert_current_mid(struct TCP_Server_Info
*server
, const unsigned int val
)
256 spin_lock(&GlobalMid_Lock
);
257 if (server
->CurrentMid
>= val
)
258 server
->CurrentMid
-= val
;
259 spin_unlock(&GlobalMid_Lock
);
262 static struct mid_q_entry
*
263 smb2_find_mid(struct TCP_Server_Info
*server
, char *buf
)
265 struct mid_q_entry
*mid
;
266 struct smb2_sync_hdr
*shdr
= (struct smb2_sync_hdr
*)buf
;
267 __u64 wire_mid
= le64_to_cpu(shdr
->MessageId
);
269 if (shdr
->ProtocolId
== SMB2_TRANSFORM_PROTO_NUM
) {
270 cifs_server_dbg(VFS
, "Encrypted frame parsing not supported yet\n");
274 spin_lock(&GlobalMid_Lock
);
275 list_for_each_entry(mid
, &server
->pending_mid_q
, qhead
) {
276 if ((mid
->mid
== wire_mid
) &&
277 (mid
->mid_state
== MID_REQUEST_SUBMITTED
) &&
278 (mid
->command
== shdr
->Command
)) {
279 kref_get(&mid
->refcount
);
280 spin_unlock(&GlobalMid_Lock
);
284 spin_unlock(&GlobalMid_Lock
);
289 smb2_dump_detail(void *buf
, struct TCP_Server_Info
*server
)
291 #ifdef CONFIG_CIFS_DEBUG2
292 struct smb2_sync_hdr
*shdr
= (struct smb2_sync_hdr
*)buf
;
294 cifs_server_dbg(VFS
, "Cmd: %d Err: 0x%x Flags: 0x%x Mid: %llu Pid: %d\n",
295 shdr
->Command
, shdr
->Status
, shdr
->Flags
, shdr
->MessageId
,
297 cifs_server_dbg(VFS
, "smb buf %p len %u\n", buf
,
298 server
->ops
->calc_smb_size(buf
, server
));
303 smb2_need_neg(struct TCP_Server_Info
*server
)
305 return server
->max_read
== 0;
309 smb2_negotiate(const unsigned int xid
, struct cifs_ses
*ses
)
313 cifs_ses_server(ses
)->CurrentMid
= 0;
314 rc
= SMB2_negotiate(xid
, ses
);
315 /* BB we probably don't need to retry with modern servers */
322 smb2_negotiate_wsize(struct cifs_tcon
*tcon
, struct smb_vol
*volume_info
)
324 struct TCP_Server_Info
*server
= tcon
->ses
->server
;
327 /* start with specified wsize, or default */
328 wsize
= volume_info
->wsize
? volume_info
->wsize
: CIFS_DEFAULT_IOSIZE
;
329 wsize
= min_t(unsigned int, wsize
, server
->max_write
);
330 #ifdef CONFIG_CIFS_SMB_DIRECT
333 wsize
= min_t(unsigned int,
334 wsize
, server
->smbd_conn
->max_fragmented_send_size
);
336 wsize
= min_t(unsigned int,
337 wsize
, server
->smbd_conn
->max_readwrite_size
);
340 if (!(server
->capabilities
& SMB2_GLOBAL_CAP_LARGE_MTU
))
341 wsize
= min_t(unsigned int, wsize
, SMB2_MAX_BUFFER_SIZE
);
347 smb3_negotiate_wsize(struct cifs_tcon
*tcon
, struct smb_vol
*volume_info
)
349 struct TCP_Server_Info
*server
= tcon
->ses
->server
;
352 /* start with specified wsize, or default */
353 wsize
= volume_info
->wsize
? volume_info
->wsize
: SMB3_DEFAULT_IOSIZE
;
354 wsize
= min_t(unsigned int, wsize
, server
->max_write
);
355 #ifdef CONFIG_CIFS_SMB_DIRECT
358 wsize
= min_t(unsigned int,
359 wsize
, server
->smbd_conn
->max_fragmented_send_size
);
361 wsize
= min_t(unsigned int,
362 wsize
, server
->smbd_conn
->max_readwrite_size
);
365 if (!(server
->capabilities
& SMB2_GLOBAL_CAP_LARGE_MTU
))
366 wsize
= min_t(unsigned int, wsize
, SMB2_MAX_BUFFER_SIZE
);
372 smb2_negotiate_rsize(struct cifs_tcon
*tcon
, struct smb_vol
*volume_info
)
374 struct TCP_Server_Info
*server
= tcon
->ses
->server
;
377 /* start with specified rsize, or default */
378 rsize
= volume_info
->rsize
? volume_info
->rsize
: CIFS_DEFAULT_IOSIZE
;
379 rsize
= min_t(unsigned int, rsize
, server
->max_read
);
380 #ifdef CONFIG_CIFS_SMB_DIRECT
383 rsize
= min_t(unsigned int,
384 rsize
, server
->smbd_conn
->max_fragmented_recv_size
);
386 rsize
= min_t(unsigned int,
387 rsize
, server
->smbd_conn
->max_readwrite_size
);
391 if (!(server
->capabilities
& SMB2_GLOBAL_CAP_LARGE_MTU
))
392 rsize
= min_t(unsigned int, rsize
, SMB2_MAX_BUFFER_SIZE
);
398 smb3_negotiate_rsize(struct cifs_tcon
*tcon
, struct smb_vol
*volume_info
)
400 struct TCP_Server_Info
*server
= tcon
->ses
->server
;
403 /* start with specified rsize, or default */
404 rsize
= volume_info
->rsize
? volume_info
->rsize
: SMB3_DEFAULT_IOSIZE
;
405 rsize
= min_t(unsigned int, rsize
, server
->max_read
);
406 #ifdef CONFIG_CIFS_SMB_DIRECT
409 rsize
= min_t(unsigned int,
410 rsize
, server
->smbd_conn
->max_fragmented_recv_size
);
412 rsize
= min_t(unsigned int,
413 rsize
, server
->smbd_conn
->max_readwrite_size
);
417 if (!(server
->capabilities
& SMB2_GLOBAL_CAP_LARGE_MTU
))
418 rsize
= min_t(unsigned int, rsize
, SMB2_MAX_BUFFER_SIZE
);
424 parse_server_interfaces(struct network_interface_info_ioctl_rsp
*buf
,
426 struct cifs_server_iface
**iface_list
,
429 struct network_interface_info_ioctl_rsp
*p
;
430 struct sockaddr_in
*addr4
;
431 struct sockaddr_in6
*addr6
;
432 struct iface_info_ipv4
*p4
;
433 struct iface_info_ipv6
*p6
;
434 struct cifs_server_iface
*info
;
444 * Fist pass: count and sanity check
447 bytes_left
= buf_len
;
449 while (bytes_left
>= sizeof(*p
)) {
451 next
= le32_to_cpu(p
->Next
);
453 bytes_left
-= sizeof(*p
);
456 p
= (struct network_interface_info_ioctl_rsp
*)((u8
*)p
+next
);
461 cifs_dbg(VFS
, "%s: malformed interface info\n", __func__
);
466 if (bytes_left
|| p
->Next
)
467 cifs_dbg(VFS
, "%s: incomplete interface info\n", __func__
);
471 * Second pass: extract info to internal structure
474 *iface_list
= kcalloc(nb_iface
, sizeof(**iface_list
), GFP_KERNEL
);
481 bytes_left
= buf_len
;
483 while (bytes_left
>= sizeof(*p
)) {
484 info
->speed
= le64_to_cpu(p
->LinkSpeed
);
485 info
->rdma_capable
= le32_to_cpu(p
->Capability
& RDMA_CAPABLE
);
486 info
->rss_capable
= le32_to_cpu(p
->Capability
& RSS_CAPABLE
);
488 cifs_dbg(FYI
, "%s: adding iface %zu\n", __func__
, *iface_count
);
489 cifs_dbg(FYI
, "%s: speed %zu bps\n", __func__
, info
->speed
);
490 cifs_dbg(FYI
, "%s: capabilities 0x%08x\n", __func__
,
491 le32_to_cpu(p
->Capability
));
495 * The kernel and wire socket structures have the same
496 * layout and use network byte order but make the
497 * conversion explicit in case either one changes.
500 addr4
= (struct sockaddr_in
*)&info
->sockaddr
;
501 p4
= (struct iface_info_ipv4
*)p
->Buffer
;
502 addr4
->sin_family
= AF_INET
;
503 memcpy(&addr4
->sin_addr
, &p4
->IPv4Address
, 4);
505 /* [MS-SMB2] 2.2.32.5.1.1 Clients MUST ignore these */
506 addr4
->sin_port
= cpu_to_be16(CIFS_PORT
);
508 cifs_dbg(FYI
, "%s: ipv4 %pI4\n", __func__
,
512 addr6
= (struct sockaddr_in6
*)&info
->sockaddr
;
513 p6
= (struct iface_info_ipv6
*)p
->Buffer
;
514 addr6
->sin6_family
= AF_INET6
;
515 memcpy(&addr6
->sin6_addr
, &p6
->IPv6Address
, 16);
517 /* [MS-SMB2] 2.2.32.5.1.2 Clients MUST ignore these */
518 addr6
->sin6_flowinfo
= 0;
519 addr6
->sin6_scope_id
= 0;
520 addr6
->sin6_port
= cpu_to_be16(CIFS_PORT
);
522 cifs_dbg(FYI
, "%s: ipv6 %pI6\n", __func__
,
527 "%s: skipping unsupported socket family\n",
535 next
= le32_to_cpu(p
->Next
);
538 p
= (struct network_interface_info_ioctl_rsp
*)((u8
*)p
+next
);
556 static int compare_iface(const void *ia
, const void *ib
)
558 const struct cifs_server_iface
*a
= (struct cifs_server_iface
*)ia
;
559 const struct cifs_server_iface
*b
= (struct cifs_server_iface
*)ib
;
561 return a
->speed
== b
->speed
? 0 : (a
->speed
> b
->speed
? -1 : 1);
565 SMB3_request_interfaces(const unsigned int xid
, struct cifs_tcon
*tcon
)
568 unsigned int ret_data_len
= 0;
569 struct network_interface_info_ioctl_rsp
*out_buf
= NULL
;
570 struct cifs_server_iface
*iface_list
;
572 struct cifs_ses
*ses
= tcon
->ses
;
574 rc
= SMB2_ioctl(xid
, tcon
, NO_FILE_ID
, NO_FILE_ID
,
575 FSCTL_QUERY_NETWORK_INTERFACE_INFO
, true /* is_fsctl */,
576 NULL
/* no data input */, 0 /* no data input */,
577 CIFSMaxBufSize
, (char **)&out_buf
, &ret_data_len
);
578 if (rc
== -EOPNOTSUPP
) {
580 "server does not support query network interfaces\n");
582 } else if (rc
!= 0) {
583 cifs_tcon_dbg(VFS
, "error %d on ioctl to get interface list\n", rc
);
587 rc
= parse_server_interfaces(out_buf
, ret_data_len
,
588 &iface_list
, &iface_count
);
592 /* sort interfaces from fastest to slowest */
593 sort(iface_list
, iface_count
, sizeof(*iface_list
), compare_iface
, NULL
);
595 spin_lock(&ses
->iface_lock
);
596 kfree(ses
->iface_list
);
597 ses
->iface_list
= iface_list
;
598 ses
->iface_count
= iface_count
;
599 ses
->iface_last_update
= jiffies
;
600 spin_unlock(&ses
->iface_lock
);
608 smb2_close_cached_fid(struct kref
*ref
)
610 struct cached_fid
*cfid
= container_of(ref
, struct cached_fid
,
613 if (cfid
->is_valid
) {
614 cifs_dbg(FYI
, "clear cached root file handle\n");
615 SMB2_close(0, cfid
->tcon
, cfid
->fid
->persistent_fid
,
616 cfid
->fid
->volatile_fid
);
617 cfid
->is_valid
= false;
618 cfid
->file_all_info_is_valid
= false;
619 cfid
->has_lease
= false;
623 void close_shroot(struct cached_fid
*cfid
)
625 mutex_lock(&cfid
->fid_mutex
);
626 kref_put(&cfid
->refcount
, smb2_close_cached_fid
);
627 mutex_unlock(&cfid
->fid_mutex
);
630 void close_shroot_lease_locked(struct cached_fid
*cfid
)
632 if (cfid
->has_lease
) {
633 cfid
->has_lease
= false;
634 kref_put(&cfid
->refcount
, smb2_close_cached_fid
);
638 void close_shroot_lease(struct cached_fid
*cfid
)
640 mutex_lock(&cfid
->fid_mutex
);
641 close_shroot_lease_locked(cfid
);
642 mutex_unlock(&cfid
->fid_mutex
);
646 smb2_cached_lease_break(struct work_struct
*work
)
648 struct cached_fid
*cfid
= container_of(work
,
649 struct cached_fid
, lease_break
);
651 close_shroot_lease(cfid
);
655 * Open the directory at the root of a share
657 int open_shroot(unsigned int xid
, struct cifs_tcon
*tcon
, struct cifs_fid
*pfid
)
659 struct cifs_ses
*ses
= tcon
->ses
;
660 struct TCP_Server_Info
*server
= ses
->server
;
661 struct cifs_open_parms oparms
;
662 struct smb2_create_rsp
*o_rsp
= NULL
;
663 struct smb2_query_info_rsp
*qi_rsp
= NULL
;
665 struct smb_rqst rqst
[2];
666 struct kvec rsp_iov
[2];
667 struct kvec open_iov
[SMB2_CREATE_IOV_SIZE
];
668 struct kvec qi_iov
[1];
670 __le16 utf16_path
= 0; /* Null - since an open of top of share */
671 u8 oplock
= SMB2_OPLOCK_LEVEL_II
;
673 mutex_lock(&tcon
->crfid
.fid_mutex
);
674 if (tcon
->crfid
.is_valid
) {
675 cifs_dbg(FYI
, "found a cached root file handle\n");
676 memcpy(pfid
, tcon
->crfid
.fid
, sizeof(struct cifs_fid
));
677 kref_get(&tcon
->crfid
.refcount
);
678 mutex_unlock(&tcon
->crfid
.fid_mutex
);
683 * We do not hold the lock for the open because in case
684 * SMB2_open needs to reconnect, it will end up calling
685 * cifs_mark_open_files_invalid() which takes the lock again
686 * thus causing a deadlock
689 mutex_unlock(&tcon
->crfid
.fid_mutex
);
691 if (smb3_encryption_required(tcon
))
692 flags
|= CIFS_TRANSFORM_REQ
;
694 memset(rqst
, 0, sizeof(rqst
));
695 resp_buftype
[0] = resp_buftype
[1] = CIFS_NO_BUFFER
;
696 memset(rsp_iov
, 0, sizeof(rsp_iov
));
699 memset(&open_iov
, 0, sizeof(open_iov
));
700 rqst
[0].rq_iov
= open_iov
;
701 rqst
[0].rq_nvec
= SMB2_CREATE_IOV_SIZE
;
704 oparms
.create_options
= 0;
705 oparms
.desired_access
= FILE_READ_ATTRIBUTES
;
706 oparms
.disposition
= FILE_OPEN
;
708 oparms
.reconnect
= false;
710 rc
= SMB2_open_init(tcon
, &rqst
[0], &oplock
, &oparms
, &utf16_path
);
713 smb2_set_next_command(tcon
, &rqst
[0]);
715 memset(&qi_iov
, 0, sizeof(qi_iov
));
716 rqst
[1].rq_iov
= qi_iov
;
719 rc
= SMB2_query_info_init(tcon
, &rqst
[1], COMPOUND_FID
,
720 COMPOUND_FID
, FILE_ALL_INFORMATION
,
722 sizeof(struct smb2_file_all_info
) +
723 PATH_MAX
* 2, 0, NULL
);
727 smb2_set_related(&rqst
[1]);
729 rc
= compound_send_recv(xid
, ses
, flags
, 2, rqst
,
730 resp_buftype
, rsp_iov
);
731 mutex_lock(&tcon
->crfid
.fid_mutex
);
734 * Now we need to check again as the cached root might have
735 * been successfully re-opened from a concurrent process
738 if (tcon
->crfid
.is_valid
) {
739 /* work was already done */
741 /* stash fids for close() later */
742 struct cifs_fid fid
= {
743 .persistent_fid
= pfid
->persistent_fid
,
744 .volatile_fid
= pfid
->volatile_fid
,
748 * caller expects this func to set pfid to a valid
749 * cached root, so we copy the existing one and get a
752 memcpy(pfid
, tcon
->crfid
.fid
, sizeof(*pfid
));
753 kref_get(&tcon
->crfid
.refcount
);
755 mutex_unlock(&tcon
->crfid
.fid_mutex
);
758 /* close extra handle outside of crit sec */
759 SMB2_close(xid
, tcon
, fid
.persistent_fid
, fid
.volatile_fid
);
764 /* Cached root is still invalid, continue normaly */
767 if (rc
== -EREMCHG
) {
768 tcon
->need_reconnect
= true;
769 printk_once(KERN_WARNING
"server share %s deleted\n",
775 atomic_inc(&tcon
->num_remote_opens
);
777 o_rsp
= (struct smb2_create_rsp
*)rsp_iov
[0].iov_base
;
778 oparms
.fid
->persistent_fid
= o_rsp
->PersistentFileId
;
779 oparms
.fid
->volatile_fid
= o_rsp
->VolatileFileId
;
780 #ifdef CONFIG_CIFS_DEBUG2
781 oparms
.fid
->mid
= le64_to_cpu(o_rsp
->sync_hdr
.MessageId
);
782 #endif /* CIFS_DEBUG2 */
784 memcpy(tcon
->crfid
.fid
, pfid
, sizeof(struct cifs_fid
));
785 tcon
->crfid
.tcon
= tcon
;
786 tcon
->crfid
.is_valid
= true;
787 kref_init(&tcon
->crfid
.refcount
);
789 /* BB TBD check to see if oplock level check can be removed below */
790 if (o_rsp
->OplockLevel
== SMB2_OPLOCK_LEVEL_LEASE
) {
791 kref_get(&tcon
->crfid
.refcount
);
792 tcon
->crfid
.has_lease
= true;
793 smb2_parse_contexts(server
, o_rsp
,
795 oparms
.fid
->lease_key
, &oplock
, NULL
);
799 qi_rsp
= (struct smb2_query_info_rsp
*)rsp_iov
[1].iov_base
;
800 if (le32_to_cpu(qi_rsp
->OutputBufferLength
) < sizeof(struct smb2_file_all_info
))
802 if (!smb2_validate_and_copy_iov(
803 le16_to_cpu(qi_rsp
->OutputBufferOffset
),
804 sizeof(struct smb2_file_all_info
),
805 &rsp_iov
[1], sizeof(struct smb2_file_all_info
),
806 (char *)&tcon
->crfid
.file_all_info
))
807 tcon
->crfid
.file_all_info_is_valid
= true;
810 mutex_unlock(&tcon
->crfid
.fid_mutex
);
812 SMB2_open_free(&rqst
[0]);
813 SMB2_query_info_free(&rqst
[1]);
814 free_rsp_buf(resp_buftype
[0], rsp_iov
[0].iov_base
);
815 free_rsp_buf(resp_buftype
[1], rsp_iov
[1].iov_base
);
820 smb3_qfs_tcon(const unsigned int xid
, struct cifs_tcon
*tcon
)
823 __le16 srch_path
= 0; /* Null - open root of share */
824 u8 oplock
= SMB2_OPLOCK_LEVEL_NONE
;
825 struct cifs_open_parms oparms
;
827 bool no_cached_open
= tcon
->nohandlecache
;
830 oparms
.desired_access
= FILE_READ_ATTRIBUTES
;
831 oparms
.disposition
= FILE_OPEN
;
832 oparms
.create_options
= 0;
834 oparms
.reconnect
= false;
837 rc
= SMB2_open(xid
, &oparms
, &srch_path
, &oplock
, NULL
, NULL
,
840 rc
= open_shroot(xid
, tcon
, &fid
);
845 SMB3_request_interfaces(xid
, tcon
);
847 SMB2_QFS_attr(xid
, tcon
, fid
.persistent_fid
, fid
.volatile_fid
,
848 FS_ATTRIBUTE_INFORMATION
);
849 SMB2_QFS_attr(xid
, tcon
, fid
.persistent_fid
, fid
.volatile_fid
,
850 FS_DEVICE_INFORMATION
);
851 SMB2_QFS_attr(xid
, tcon
, fid
.persistent_fid
, fid
.volatile_fid
,
852 FS_VOLUME_INFORMATION
);
853 SMB2_QFS_attr(xid
, tcon
, fid
.persistent_fid
, fid
.volatile_fid
,
854 FS_SECTOR_SIZE_INFORMATION
); /* SMB3 specific */
856 SMB2_close(xid
, tcon
, fid
.persistent_fid
, fid
.volatile_fid
);
858 close_shroot(&tcon
->crfid
);
862 smb2_qfs_tcon(const unsigned int xid
, struct cifs_tcon
*tcon
)
865 __le16 srch_path
= 0; /* Null - open root of share */
866 u8 oplock
= SMB2_OPLOCK_LEVEL_NONE
;
867 struct cifs_open_parms oparms
;
871 oparms
.desired_access
= FILE_READ_ATTRIBUTES
;
872 oparms
.disposition
= FILE_OPEN
;
873 oparms
.create_options
= 0;
875 oparms
.reconnect
= false;
877 rc
= SMB2_open(xid
, &oparms
, &srch_path
, &oplock
, NULL
, NULL
, NULL
);
881 SMB2_QFS_attr(xid
, tcon
, fid
.persistent_fid
, fid
.volatile_fid
,
882 FS_ATTRIBUTE_INFORMATION
);
883 SMB2_QFS_attr(xid
, tcon
, fid
.persistent_fid
, fid
.volatile_fid
,
884 FS_DEVICE_INFORMATION
);
885 SMB2_close(xid
, tcon
, fid
.persistent_fid
, fid
.volatile_fid
);
889 smb2_is_path_accessible(const unsigned int xid
, struct cifs_tcon
*tcon
,
890 struct cifs_sb_info
*cifs_sb
, const char *full_path
)
894 __u8 oplock
= SMB2_OPLOCK_LEVEL_NONE
;
895 struct cifs_open_parms oparms
;
898 if ((*full_path
== 0) && tcon
->crfid
.is_valid
)
901 utf16_path
= cifs_convert_path_to_utf16(full_path
, cifs_sb
);
906 oparms
.desired_access
= FILE_READ_ATTRIBUTES
;
907 oparms
.disposition
= FILE_OPEN
;
908 if (backup_cred(cifs_sb
))
909 oparms
.create_options
= CREATE_OPEN_BACKUP_INTENT
;
911 oparms
.create_options
= 0;
913 oparms
.reconnect
= false;
915 rc
= SMB2_open(xid
, &oparms
, utf16_path
, &oplock
, NULL
, NULL
, NULL
);
921 rc
= SMB2_close(xid
, tcon
, fid
.persistent_fid
, fid
.volatile_fid
);
927 smb2_get_srv_inum(const unsigned int xid
, struct cifs_tcon
*tcon
,
928 struct cifs_sb_info
*cifs_sb
, const char *full_path
,
929 u64
*uniqueid
, FILE_ALL_INFO
*data
)
931 *uniqueid
= le64_to_cpu(data
->IndexNumber
);
936 smb2_query_file_info(const unsigned int xid
, struct cifs_tcon
*tcon
,
937 struct cifs_fid
*fid
, FILE_ALL_INFO
*data
)
940 struct smb2_file_all_info
*smb2_data
;
942 smb2_data
= kzalloc(sizeof(struct smb2_file_all_info
) + PATH_MAX
* 2,
944 if (smb2_data
== NULL
)
947 rc
= SMB2_query_info(xid
, tcon
, fid
->persistent_fid
, fid
->volatile_fid
,
950 move_smb2_info_to_cifs(data
, smb2_data
);
955 #ifdef CONFIG_CIFS_XATTR
957 move_smb2_ea_to_cifs(char *dst
, size_t dst_size
,
958 struct smb2_file_full_ea_info
*src
, size_t src_size
,
959 const unsigned char *ea_name
)
962 unsigned int ea_name_len
= ea_name
? strlen(ea_name
) : 0;
964 size_t buf_size
= dst_size
;
965 size_t name_len
, value_len
, user_name_len
;
967 while (src_size
> 0) {
968 name
= &src
->ea_data
[0];
969 name_len
= (size_t)src
->ea_name_length
;
970 value
= &src
->ea_data
[src
->ea_name_length
+ 1];
971 value_len
= (size_t)le16_to_cpu(src
->ea_value_length
);
976 if (src_size
< 8 + name_len
+ 1 + value_len
) {
977 cifs_dbg(FYI
, "EA entry goes beyond length of list\n");
983 if (ea_name_len
== name_len
&&
984 memcmp(ea_name
, name
, name_len
) == 0) {
988 if (dst_size
< value_len
) {
992 memcpy(dst
, value
, value_len
);
996 /* 'user.' plus a terminating null */
997 user_name_len
= 5 + 1 + name_len
;
1000 /* skip copy - calc size only */
1001 rc
+= user_name_len
;
1002 } else if (dst_size
>= user_name_len
) {
1003 dst_size
-= user_name_len
;
1004 memcpy(dst
, "user.", 5);
1006 memcpy(dst
, src
->ea_data
, name_len
);
1010 rc
+= user_name_len
;
1012 /* stop before overrun buffer */
1018 if (!src
->next_entry_offset
)
1021 if (src_size
< le32_to_cpu(src
->next_entry_offset
)) {
1022 /* stop before overrun buffer */
1026 src_size
-= le32_to_cpu(src
->next_entry_offset
);
1027 src
= (void *)((char *)src
+
1028 le32_to_cpu(src
->next_entry_offset
));
1031 /* didn't find the named attribute */
1040 smb2_query_eas(const unsigned int xid
, struct cifs_tcon
*tcon
,
1041 const unsigned char *path
, const unsigned char *ea_name
,
1042 char *ea_data
, size_t buf_size
,
1043 struct cifs_sb_info
*cifs_sb
)
1047 struct kvec rsp_iov
= {NULL
, 0};
1048 int buftype
= CIFS_NO_BUFFER
;
1049 struct smb2_query_info_rsp
*rsp
;
1050 struct smb2_file_full_ea_info
*info
= NULL
;
1052 utf16_path
= cifs_convert_path_to_utf16(path
, cifs_sb
);
1056 rc
= smb2_query_info_compound(xid
, tcon
, utf16_path
,
1058 FILE_FULL_EA_INFORMATION
,
1061 MAX_SMB2_CREATE_RESPONSE_SIZE
-
1062 MAX_SMB2_CLOSE_RESPONSE_SIZE
,
1063 &rsp_iov
, &buftype
, cifs_sb
);
1066 * If ea_name is NULL (listxattr) and there are no EAs,
1067 * return 0 as it's not an error. Otherwise, the specified
1068 * ea_name was not found.
1070 if (!ea_name
&& rc
== -ENODATA
)
1075 rsp
= (struct smb2_query_info_rsp
*)rsp_iov
.iov_base
;
1076 rc
= smb2_validate_iov(le16_to_cpu(rsp
->OutputBufferOffset
),
1077 le32_to_cpu(rsp
->OutputBufferLength
),
1079 sizeof(struct smb2_file_full_ea_info
));
1083 info
= (struct smb2_file_full_ea_info
*)(
1084 le16_to_cpu(rsp
->OutputBufferOffset
) + (char *)rsp
);
1085 rc
= move_smb2_ea_to_cifs(ea_data
, buf_size
, info
,
1086 le32_to_cpu(rsp
->OutputBufferLength
), ea_name
);
1090 free_rsp_buf(buftype
, rsp_iov
.iov_base
);
1096 smb2_set_ea(const unsigned int xid
, struct cifs_tcon
*tcon
,
1097 const char *path
, const char *ea_name
, const void *ea_value
,
1098 const __u16 ea_value_len
, const struct nls_table
*nls_codepage
,
1099 struct cifs_sb_info
*cifs_sb
)
1101 struct cifs_ses
*ses
= tcon
->ses
;
1102 __le16
*utf16_path
= NULL
;
1103 int ea_name_len
= strlen(ea_name
);
1106 struct smb_rqst rqst
[3];
1107 int resp_buftype
[3];
1108 struct kvec rsp_iov
[3];
1109 struct kvec open_iov
[SMB2_CREATE_IOV_SIZE
];
1110 struct cifs_open_parms oparms
;
1111 __u8 oplock
= SMB2_OPLOCK_LEVEL_NONE
;
1112 struct cifs_fid fid
;
1113 struct kvec si_iov
[SMB2_SET_INFO_IOV_SIZE
];
1114 unsigned int size
[1];
1116 struct smb2_file_full_ea_info
*ea
= NULL
;
1117 struct kvec close_iov
[1];
1120 if (smb3_encryption_required(tcon
))
1121 flags
|= CIFS_TRANSFORM_REQ
;
1123 if (ea_name_len
> 255)
1126 utf16_path
= cifs_convert_path_to_utf16(path
, cifs_sb
);
1130 memset(rqst
, 0, sizeof(rqst
));
1131 resp_buftype
[0] = resp_buftype
[1] = resp_buftype
[2] = CIFS_NO_BUFFER
;
1132 memset(rsp_iov
, 0, sizeof(rsp_iov
));
1134 if (ses
->server
->ops
->query_all_EAs
) {
1136 rc
= ses
->server
->ops
->query_all_EAs(xid
, tcon
, path
,
1145 memset(&open_iov
, 0, sizeof(open_iov
));
1146 rqst
[0].rq_iov
= open_iov
;
1147 rqst
[0].rq_nvec
= SMB2_CREATE_IOV_SIZE
;
1149 memset(&oparms
, 0, sizeof(oparms
));
1151 oparms
.desired_access
= FILE_WRITE_EA
;
1152 oparms
.disposition
= FILE_OPEN
;
1153 if (backup_cred(cifs_sb
))
1154 oparms
.create_options
= CREATE_OPEN_BACKUP_INTENT
;
1156 oparms
.create_options
= 0;
1158 oparms
.reconnect
= false;
1160 rc
= SMB2_open_init(tcon
, &rqst
[0], &oplock
, &oparms
, utf16_path
);
1163 smb2_set_next_command(tcon
, &rqst
[0]);
1167 memset(&si_iov
, 0, sizeof(si_iov
));
1168 rqst
[1].rq_iov
= si_iov
;
1169 rqst
[1].rq_nvec
= 1;
1171 len
= sizeof(ea
) + ea_name_len
+ ea_value_len
+ 1;
1172 ea
= kzalloc(len
, GFP_KERNEL
);
1178 ea
->ea_name_length
= ea_name_len
;
1179 ea
->ea_value_length
= cpu_to_le16(ea_value_len
);
1180 memcpy(ea
->ea_data
, ea_name
, ea_name_len
+ 1);
1181 memcpy(ea
->ea_data
+ ea_name_len
+ 1, ea_value
, ea_value_len
);
1186 rc
= SMB2_set_info_init(tcon
, &rqst
[1], COMPOUND_FID
,
1187 COMPOUND_FID
, current
->tgid
,
1188 FILE_FULL_EA_INFORMATION
,
1189 SMB2_O_INFO_FILE
, 0, data
, size
);
1190 smb2_set_next_command(tcon
, &rqst
[1]);
1191 smb2_set_related(&rqst
[1]);
1195 memset(&close_iov
, 0, sizeof(close_iov
));
1196 rqst
[2].rq_iov
= close_iov
;
1197 rqst
[2].rq_nvec
= 1;
1198 rc
= SMB2_close_init(tcon
, &rqst
[2], COMPOUND_FID
, COMPOUND_FID
, false);
1199 smb2_set_related(&rqst
[2]);
1201 rc
= compound_send_recv(xid
, ses
, flags
, 3, rqst
,
1202 resp_buftype
, rsp_iov
);
1203 /* no need to bump num_remote_opens because handle immediately closed */
1208 SMB2_open_free(&rqst
[0]);
1209 SMB2_set_info_free(&rqst
[1]);
1210 SMB2_close_free(&rqst
[2]);
1211 free_rsp_buf(resp_buftype
[0], rsp_iov
[0].iov_base
);
1212 free_rsp_buf(resp_buftype
[1], rsp_iov
[1].iov_base
);
1213 free_rsp_buf(resp_buftype
[2], rsp_iov
[2].iov_base
);
1219 smb2_can_echo(struct TCP_Server_Info
*server
)
1221 return server
->echoes
;
1225 smb2_clear_stats(struct cifs_tcon
*tcon
)
1229 for (i
= 0; i
< NUMBER_OF_SMB2_COMMANDS
; i
++) {
1230 atomic_set(&tcon
->stats
.smb2_stats
.smb2_com_sent
[i
], 0);
1231 atomic_set(&tcon
->stats
.smb2_stats
.smb2_com_failed
[i
], 0);
1236 smb2_dump_share_caps(struct seq_file
*m
, struct cifs_tcon
*tcon
)
1238 seq_puts(m
, "\n\tShare Capabilities:");
1239 if (tcon
->capabilities
& SMB2_SHARE_CAP_DFS
)
1240 seq_puts(m
, " DFS,");
1241 if (tcon
->capabilities
& SMB2_SHARE_CAP_CONTINUOUS_AVAILABILITY
)
1242 seq_puts(m
, " CONTINUOUS AVAILABILITY,");
1243 if (tcon
->capabilities
& SMB2_SHARE_CAP_SCALEOUT
)
1244 seq_puts(m
, " SCALEOUT,");
1245 if (tcon
->capabilities
& SMB2_SHARE_CAP_CLUSTER
)
1246 seq_puts(m
, " CLUSTER,");
1247 if (tcon
->capabilities
& SMB2_SHARE_CAP_ASYMMETRIC
)
1248 seq_puts(m
, " ASYMMETRIC,");
1249 if (tcon
->capabilities
== 0)
1250 seq_puts(m
, " None");
1251 if (tcon
->ss_flags
& SSINFO_FLAGS_ALIGNED_DEVICE
)
1252 seq_puts(m
, " Aligned,");
1253 if (tcon
->ss_flags
& SSINFO_FLAGS_PARTITION_ALIGNED_ON_DEVICE
)
1254 seq_puts(m
, " Partition Aligned,");
1255 if (tcon
->ss_flags
& SSINFO_FLAGS_NO_SEEK_PENALTY
)
1256 seq_puts(m
, " SSD,");
1257 if (tcon
->ss_flags
& SSINFO_FLAGS_TRIM_ENABLED
)
1258 seq_puts(m
, " TRIM-support,");
1260 seq_printf(m
, "\tShare Flags: 0x%x", tcon
->share_flags
);
1261 seq_printf(m
, "\n\ttid: 0x%x", tcon
->tid
);
1262 if (tcon
->perf_sector_size
)
1263 seq_printf(m
, "\tOptimal sector size: 0x%x",
1264 tcon
->perf_sector_size
);
1265 seq_printf(m
, "\tMaximal Access: 0x%x", tcon
->maximal_access
);
1269 smb2_print_stats(struct seq_file
*m
, struct cifs_tcon
*tcon
)
1271 atomic_t
*sent
= tcon
->stats
.smb2_stats
.smb2_com_sent
;
1272 atomic_t
*failed
= tcon
->stats
.smb2_stats
.smb2_com_failed
;
1275 * Can't display SMB2_NEGOTIATE, SESSION_SETUP, LOGOFF, CANCEL and ECHO
1276 * totals (requests sent) since those SMBs are per-session not per tcon
1278 seq_printf(m
, "\nBytes read: %llu Bytes written: %llu",
1279 (long long)(tcon
->bytes_read
),
1280 (long long)(tcon
->bytes_written
));
1281 seq_printf(m
, "\nOpen files: %d total (local), %d open on server",
1282 atomic_read(&tcon
->num_local_opens
),
1283 atomic_read(&tcon
->num_remote_opens
));
1284 seq_printf(m
, "\nTreeConnects: %d total %d failed",
1285 atomic_read(&sent
[SMB2_TREE_CONNECT_HE
]),
1286 atomic_read(&failed
[SMB2_TREE_CONNECT_HE
]));
1287 seq_printf(m
, "\nTreeDisconnects: %d total %d failed",
1288 atomic_read(&sent
[SMB2_TREE_DISCONNECT_HE
]),
1289 atomic_read(&failed
[SMB2_TREE_DISCONNECT_HE
]));
1290 seq_printf(m
, "\nCreates: %d total %d failed",
1291 atomic_read(&sent
[SMB2_CREATE_HE
]),
1292 atomic_read(&failed
[SMB2_CREATE_HE
]));
1293 seq_printf(m
, "\nCloses: %d total %d failed",
1294 atomic_read(&sent
[SMB2_CLOSE_HE
]),
1295 atomic_read(&failed
[SMB2_CLOSE_HE
]));
1296 seq_printf(m
, "\nFlushes: %d total %d failed",
1297 atomic_read(&sent
[SMB2_FLUSH_HE
]),
1298 atomic_read(&failed
[SMB2_FLUSH_HE
]));
1299 seq_printf(m
, "\nReads: %d total %d failed",
1300 atomic_read(&sent
[SMB2_READ_HE
]),
1301 atomic_read(&failed
[SMB2_READ_HE
]));
1302 seq_printf(m
, "\nWrites: %d total %d failed",
1303 atomic_read(&sent
[SMB2_WRITE_HE
]),
1304 atomic_read(&failed
[SMB2_WRITE_HE
]));
1305 seq_printf(m
, "\nLocks: %d total %d failed",
1306 atomic_read(&sent
[SMB2_LOCK_HE
]),
1307 atomic_read(&failed
[SMB2_LOCK_HE
]));
1308 seq_printf(m
, "\nIOCTLs: %d total %d failed",
1309 atomic_read(&sent
[SMB2_IOCTL_HE
]),
1310 atomic_read(&failed
[SMB2_IOCTL_HE
]));
1311 seq_printf(m
, "\nQueryDirectories: %d total %d failed",
1312 atomic_read(&sent
[SMB2_QUERY_DIRECTORY_HE
]),
1313 atomic_read(&failed
[SMB2_QUERY_DIRECTORY_HE
]));
1314 seq_printf(m
, "\nChangeNotifies: %d total %d failed",
1315 atomic_read(&sent
[SMB2_CHANGE_NOTIFY_HE
]),
1316 atomic_read(&failed
[SMB2_CHANGE_NOTIFY_HE
]));
1317 seq_printf(m
, "\nQueryInfos: %d total %d failed",
1318 atomic_read(&sent
[SMB2_QUERY_INFO_HE
]),
1319 atomic_read(&failed
[SMB2_QUERY_INFO_HE
]));
1320 seq_printf(m
, "\nSetInfos: %d total %d failed",
1321 atomic_read(&sent
[SMB2_SET_INFO_HE
]),
1322 atomic_read(&failed
[SMB2_SET_INFO_HE
]));
1323 seq_printf(m
, "\nOplockBreaks: %d sent %d failed",
1324 atomic_read(&sent
[SMB2_OPLOCK_BREAK_HE
]),
1325 atomic_read(&failed
[SMB2_OPLOCK_BREAK_HE
]));
1329 smb2_set_fid(struct cifsFileInfo
*cfile
, struct cifs_fid
*fid
, __u32 oplock
)
1331 struct cifsInodeInfo
*cinode
= CIFS_I(d_inode(cfile
->dentry
));
1332 struct TCP_Server_Info
*server
= tlink_tcon(cfile
->tlink
)->ses
->server
;
1334 cfile
->fid
.persistent_fid
= fid
->persistent_fid
;
1335 cfile
->fid
.volatile_fid
= fid
->volatile_fid
;
1336 #ifdef CONFIG_CIFS_DEBUG2
1337 cfile
->fid
.mid
= fid
->mid
;
1338 #endif /* CIFS_DEBUG2 */
1339 server
->ops
->set_oplock_level(cinode
, oplock
, fid
->epoch
,
1341 cinode
->can_cache_brlcks
= CIFS_CACHE_WRITE(cinode
);
1342 memcpy(cfile
->fid
.create_guid
, fid
->create_guid
, 16);
1346 smb2_close_file(const unsigned int xid
, struct cifs_tcon
*tcon
,
1347 struct cifs_fid
*fid
)
1349 SMB2_close(xid
, tcon
, fid
->persistent_fid
, fid
->volatile_fid
);
1353 smb2_close_getattr(const unsigned int xid
, struct cifs_tcon
*tcon
,
1354 struct cifsFileInfo
*cfile
)
1356 struct smb2_file_network_open_info file_inf
;
1357 struct inode
*inode
;
1360 rc
= __SMB2_close(xid
, tcon
, cfile
->fid
.persistent_fid
,
1361 cfile
->fid
.volatile_fid
, &file_inf
);
1365 inode
= d_inode(cfile
->dentry
);
1367 spin_lock(&inode
->i_lock
);
1368 CIFS_I(inode
)->time
= jiffies
;
1370 /* Creation time should not need to be updated on close */
1371 if (file_inf
.LastWriteTime
)
1372 inode
->i_mtime
= cifs_NTtimeToUnix(file_inf
.LastWriteTime
);
1373 if (file_inf
.ChangeTime
)
1374 inode
->i_ctime
= cifs_NTtimeToUnix(file_inf
.ChangeTime
);
1375 if (file_inf
.LastAccessTime
)
1376 inode
->i_atime
= cifs_NTtimeToUnix(file_inf
.LastAccessTime
);
1379 * i_blocks is not related to (i_size / i_blksize),
1380 * but instead 512 byte (2**9) size is required for
1381 * calculating num blocks.
1383 if (le64_to_cpu(file_inf
.AllocationSize
) > 4096)
1385 (512 - 1 + le64_to_cpu(file_inf
.AllocationSize
)) >> 9;
1387 /* End of file and Attributes should not have to be updated on close */
1388 spin_unlock(&inode
->i_lock
);
1392 SMB2_request_res_key(const unsigned int xid
, struct cifs_tcon
*tcon
,
1393 u64 persistent_fid
, u64 volatile_fid
,
1394 struct copychunk_ioctl
*pcchunk
)
1397 unsigned int ret_data_len
;
1398 struct resume_key_req
*res_key
;
1400 rc
= SMB2_ioctl(xid
, tcon
, persistent_fid
, volatile_fid
,
1401 FSCTL_SRV_REQUEST_RESUME_KEY
, true /* is_fsctl */,
1402 NULL
, 0 /* no input */, CIFSMaxBufSize
,
1403 (char **)&res_key
, &ret_data_len
);
1406 cifs_tcon_dbg(VFS
, "refcpy ioctl error %d getting resume key\n", rc
);
1407 goto req_res_key_exit
;
1409 if (ret_data_len
< sizeof(struct resume_key_req
)) {
1410 cifs_tcon_dbg(VFS
, "Invalid refcopy resume key length\n");
1412 goto req_res_key_exit
;
1414 memcpy(pcchunk
->SourceKey
, res_key
->ResumeKey
, COPY_CHUNK_RES_KEY_SIZE
);
1422 smb2_ioctl_query_info(const unsigned int xid
,
1423 struct cifs_tcon
*tcon
,
1424 __le16
*path
, int is_dir
,
1427 struct cifs_ses
*ses
= tcon
->ses
;
1428 char __user
*arg
= (char __user
*)p
;
1429 struct smb_query_info qi
;
1430 struct smb_query_info __user
*pqi
;
1433 struct smb2_query_info_rsp
*qi_rsp
= NULL
;
1434 struct smb2_ioctl_rsp
*io_rsp
= NULL
;
1435 void *buffer
= NULL
;
1436 struct smb_rqst rqst
[3];
1437 int resp_buftype
[3];
1438 struct kvec rsp_iov
[3];
1439 struct kvec open_iov
[SMB2_CREATE_IOV_SIZE
];
1440 struct cifs_open_parms oparms
;
1441 u8 oplock
= SMB2_OPLOCK_LEVEL_NONE
;
1442 struct cifs_fid fid
;
1443 struct kvec qi_iov
[1];
1444 struct kvec io_iov
[SMB2_IOCTL_IOV_SIZE
];
1445 struct kvec si_iov
[SMB2_SET_INFO_IOV_SIZE
];
1446 struct kvec close_iov
[1];
1447 unsigned int size
[2];
1450 memset(rqst
, 0, sizeof(rqst
));
1451 resp_buftype
[0] = resp_buftype
[1] = resp_buftype
[2] = CIFS_NO_BUFFER
;
1452 memset(rsp_iov
, 0, sizeof(rsp_iov
));
1454 if (copy_from_user(&qi
, arg
, sizeof(struct smb_query_info
)))
1457 if (qi
.output_buffer_length
> 1024)
1460 if (!ses
|| !(ses
->server
))
1463 if (smb3_encryption_required(tcon
))
1464 flags
|= CIFS_TRANSFORM_REQ
;
1466 buffer
= memdup_user(arg
+ sizeof(struct smb_query_info
),
1467 qi
.output_buffer_length
);
1469 return PTR_ERR(buffer
);
1472 memset(&open_iov
, 0, sizeof(open_iov
));
1473 rqst
[0].rq_iov
= open_iov
;
1474 rqst
[0].rq_nvec
= SMB2_CREATE_IOV_SIZE
;
1476 memset(&oparms
, 0, sizeof(oparms
));
1478 oparms
.disposition
= FILE_OPEN
;
1480 oparms
.create_options
= CREATE_NOT_FILE
;
1482 oparms
.create_options
= CREATE_NOT_DIR
;
1484 oparms
.reconnect
= false;
1486 if (qi
.flags
& PASSTHRU_FSCTL
) {
1487 switch (qi
.info_type
& FSCTL_DEVICE_ACCESS_MASK
) {
1488 case FSCTL_DEVICE_ACCESS_FILE_READ_WRITE_ACCESS
:
1489 oparms
.desired_access
= FILE_READ_DATA
| FILE_WRITE_DATA
| FILE_READ_ATTRIBUTES
| SYNCHRONIZE
;
1491 case FSCTL_DEVICE_ACCESS_FILE_ANY_ACCESS
:
1492 oparms
.desired_access
= GENERIC_ALL
;
1494 case FSCTL_DEVICE_ACCESS_FILE_READ_ACCESS
:
1495 oparms
.desired_access
= GENERIC_READ
;
1497 case FSCTL_DEVICE_ACCESS_FILE_WRITE_ACCESS
:
1498 oparms
.desired_access
= GENERIC_WRITE
;
1501 } else if (qi
.flags
& PASSTHRU_SET_INFO
) {
1502 oparms
.desired_access
= GENERIC_WRITE
;
1504 oparms
.desired_access
= FILE_READ_ATTRIBUTES
| READ_CONTROL
;
1507 rc
= SMB2_open_init(tcon
, &rqst
[0], &oplock
, &oparms
, path
);
1510 smb2_set_next_command(tcon
, &rqst
[0]);
1513 if (qi
.flags
& PASSTHRU_FSCTL
) {
1514 /* Can eventually relax perm check since server enforces too */
1515 if (!capable(CAP_SYS_ADMIN
))
1518 memset(&io_iov
, 0, sizeof(io_iov
));
1519 rqst
[1].rq_iov
= io_iov
;
1520 rqst
[1].rq_nvec
= SMB2_IOCTL_IOV_SIZE
;
1522 rc
= SMB2_ioctl_init(tcon
, &rqst
[1],
1523 COMPOUND_FID
, COMPOUND_FID
,
1524 qi
.info_type
, true, buffer
,
1525 qi
.output_buffer_length
,
1527 MAX_SMB2_CREATE_RESPONSE_SIZE
-
1528 MAX_SMB2_CLOSE_RESPONSE_SIZE
);
1530 } else if (qi
.flags
== PASSTHRU_SET_INFO
) {
1531 /* Can eventually relax perm check since server enforces too */
1532 if (!capable(CAP_SYS_ADMIN
))
1535 memset(&si_iov
, 0, sizeof(si_iov
));
1536 rqst
[1].rq_iov
= si_iov
;
1537 rqst
[1].rq_nvec
= 1;
1542 rc
= SMB2_set_info_init(tcon
, &rqst
[1],
1543 COMPOUND_FID
, COMPOUND_FID
,
1545 FILE_END_OF_FILE_INFORMATION
,
1546 SMB2_O_INFO_FILE
, 0, data
, size
);
1548 } else if (qi
.flags
== PASSTHRU_QUERY_INFO
) {
1549 memset(&qi_iov
, 0, sizeof(qi_iov
));
1550 rqst
[1].rq_iov
= qi_iov
;
1551 rqst
[1].rq_nvec
= 1;
1553 rc
= SMB2_query_info_init(tcon
, &rqst
[1], COMPOUND_FID
,
1554 COMPOUND_FID
, qi
.file_info_class
,
1555 qi
.info_type
, qi
.additional_information
,
1556 qi
.input_buffer_length
,
1557 qi
.output_buffer_length
, buffer
);
1558 } else { /* unknown flags */
1559 cifs_tcon_dbg(VFS
, "invalid passthru query flags: 0x%x\n", qi
.flags
);
1565 smb2_set_next_command(tcon
, &rqst
[1]);
1566 smb2_set_related(&rqst
[1]);
1569 memset(&close_iov
, 0, sizeof(close_iov
));
1570 rqst
[2].rq_iov
= close_iov
;
1571 rqst
[2].rq_nvec
= 1;
1573 rc
= SMB2_close_init(tcon
, &rqst
[2], COMPOUND_FID
, COMPOUND_FID
, false);
1576 smb2_set_related(&rqst
[2]);
1578 rc
= compound_send_recv(xid
, ses
, flags
, 3, rqst
,
1579 resp_buftype
, rsp_iov
);
1583 /* No need to bump num_remote_opens since handle immediately closed */
1584 if (qi
.flags
& PASSTHRU_FSCTL
) {
1585 pqi
= (struct smb_query_info __user
*)arg
;
1586 io_rsp
= (struct smb2_ioctl_rsp
*)rsp_iov
[1].iov_base
;
1587 if (le32_to_cpu(io_rsp
->OutputCount
) < qi
.input_buffer_length
)
1588 qi
.input_buffer_length
= le32_to_cpu(io_rsp
->OutputCount
);
1589 if (qi
.input_buffer_length
> 0 &&
1590 le32_to_cpu(io_rsp
->OutputOffset
) + qi
.input_buffer_length
1591 > rsp_iov
[1].iov_len
)
1594 if (copy_to_user(&pqi
->input_buffer_length
,
1595 &qi
.input_buffer_length
,
1596 sizeof(qi
.input_buffer_length
)))
1599 if (copy_to_user((void __user
*)pqi
+ sizeof(struct smb_query_info
),
1600 (const void *)io_rsp
+ le32_to_cpu(io_rsp
->OutputOffset
),
1601 qi
.input_buffer_length
))
1604 pqi
= (struct smb_query_info __user
*)arg
;
1605 qi_rsp
= (struct smb2_query_info_rsp
*)rsp_iov
[1].iov_base
;
1606 if (le32_to_cpu(qi_rsp
->OutputBufferLength
) < qi
.input_buffer_length
)
1607 qi
.input_buffer_length
= le32_to_cpu(qi_rsp
->OutputBufferLength
);
1608 if (copy_to_user(&pqi
->input_buffer_length
,
1609 &qi
.input_buffer_length
,
1610 sizeof(qi
.input_buffer_length
)))
1613 if (copy_to_user(pqi
+ 1, qi_rsp
->Buffer
,
1614 qi
.input_buffer_length
))
1620 SMB2_open_free(&rqst
[0]);
1621 if (qi
.flags
& PASSTHRU_FSCTL
)
1622 SMB2_ioctl_free(&rqst
[1]);
1624 SMB2_query_info_free(&rqst
[1]);
1626 SMB2_close_free(&rqst
[2]);
1627 free_rsp_buf(resp_buftype
[0], rsp_iov
[0].iov_base
);
1628 free_rsp_buf(resp_buftype
[1], rsp_iov
[1].iov_base
);
1629 free_rsp_buf(resp_buftype
[2], rsp_iov
[2].iov_base
);
1638 smb2_copychunk_range(const unsigned int xid
,
1639 struct cifsFileInfo
*srcfile
,
1640 struct cifsFileInfo
*trgtfile
, u64 src_off
,
1641 u64 len
, u64 dest_off
)
1644 unsigned int ret_data_len
;
1645 struct copychunk_ioctl
*pcchunk
;
1646 struct copychunk_ioctl_rsp
*retbuf
= NULL
;
1647 struct cifs_tcon
*tcon
;
1648 int chunks_copied
= 0;
1649 bool chunk_sizes_updated
= false;
1650 ssize_t bytes_written
, total_bytes_written
= 0;
1652 pcchunk
= kmalloc(sizeof(struct copychunk_ioctl
), GFP_KERNEL
);
1654 if (pcchunk
== NULL
)
1657 cifs_dbg(FYI
, "%s: about to call request res key\n", __func__
);
1658 /* Request a key from the server to identify the source of the copy */
1659 rc
= SMB2_request_res_key(xid
, tlink_tcon(srcfile
->tlink
),
1660 srcfile
->fid
.persistent_fid
,
1661 srcfile
->fid
.volatile_fid
, pcchunk
);
1663 /* Note: request_res_key sets res_key null only if rc !=0 */
1667 /* For now array only one chunk long, will make more flexible later */
1668 pcchunk
->ChunkCount
= cpu_to_le32(1);
1669 pcchunk
->Reserved
= 0;
1670 pcchunk
->Reserved2
= 0;
1672 tcon
= tlink_tcon(trgtfile
->tlink
);
1675 pcchunk
->SourceOffset
= cpu_to_le64(src_off
);
1676 pcchunk
->TargetOffset
= cpu_to_le64(dest_off
);
1678 cpu_to_le32(min_t(u32
, len
, tcon
->max_bytes_chunk
));
1680 /* Request server copy to target from src identified by key */
1681 rc
= SMB2_ioctl(xid
, tcon
, trgtfile
->fid
.persistent_fid
,
1682 trgtfile
->fid
.volatile_fid
, FSCTL_SRV_COPYCHUNK_WRITE
,
1683 true /* is_fsctl */, (char *)pcchunk
,
1684 sizeof(struct copychunk_ioctl
), CIFSMaxBufSize
,
1685 (char **)&retbuf
, &ret_data_len
);
1688 sizeof(struct copychunk_ioctl_rsp
)) {
1689 cifs_tcon_dbg(VFS
, "invalid cchunk response size\n");
1693 if (retbuf
->TotalBytesWritten
== 0) {
1694 cifs_dbg(FYI
, "no bytes copied\n");
1699 * Check if server claimed to write more than we asked
1701 if (le32_to_cpu(retbuf
->TotalBytesWritten
) >
1702 le32_to_cpu(pcchunk
->Length
)) {
1703 cifs_tcon_dbg(VFS
, "invalid copy chunk response\n");
1707 if (le32_to_cpu(retbuf
->ChunksWritten
) != 1) {
1708 cifs_tcon_dbg(VFS
, "invalid num chunks written\n");
1714 bytes_written
= le32_to_cpu(retbuf
->TotalBytesWritten
);
1715 src_off
+= bytes_written
;
1716 dest_off
+= bytes_written
;
1717 len
-= bytes_written
;
1718 total_bytes_written
+= bytes_written
;
1720 cifs_dbg(FYI
, "Chunks %d PartialChunk %d Total %zu\n",
1721 le32_to_cpu(retbuf
->ChunksWritten
),
1722 le32_to_cpu(retbuf
->ChunkBytesWritten
),
1724 } else if (rc
== -EINVAL
) {
1725 if (ret_data_len
!= sizeof(struct copychunk_ioctl_rsp
))
1728 cifs_dbg(FYI
, "MaxChunks %d BytesChunk %d MaxCopy %d\n",
1729 le32_to_cpu(retbuf
->ChunksWritten
),
1730 le32_to_cpu(retbuf
->ChunkBytesWritten
),
1731 le32_to_cpu(retbuf
->TotalBytesWritten
));
1734 * Check if this is the first request using these sizes,
1735 * (ie check if copy succeed once with original sizes
1736 * and check if the server gave us different sizes after
1737 * we already updated max sizes on previous request).
1738 * if not then why is the server returning an error now
1740 if ((chunks_copied
!= 0) || chunk_sizes_updated
)
1743 /* Check that server is not asking us to grow size */
1744 if (le32_to_cpu(retbuf
->ChunkBytesWritten
) <
1745 tcon
->max_bytes_chunk
)
1746 tcon
->max_bytes_chunk
=
1747 le32_to_cpu(retbuf
->ChunkBytesWritten
);
1749 goto cchunk_out
; /* server gave us bogus size */
1751 /* No need to change MaxChunks since already set to 1 */
1752 chunk_sizes_updated
= true;
1763 return total_bytes_written
;
1767 smb2_flush_file(const unsigned int xid
, struct cifs_tcon
*tcon
,
1768 struct cifs_fid
*fid
)
1770 return SMB2_flush(xid
, tcon
, fid
->persistent_fid
, fid
->volatile_fid
);
1774 smb2_read_data_offset(char *buf
)
1776 struct smb2_read_rsp
*rsp
= (struct smb2_read_rsp
*)buf
;
1778 return rsp
->DataOffset
;
1782 smb2_read_data_length(char *buf
, bool in_remaining
)
1784 struct smb2_read_rsp
*rsp
= (struct smb2_read_rsp
*)buf
;
1787 return le32_to_cpu(rsp
->DataRemaining
);
1789 return le32_to_cpu(rsp
->DataLength
);
1794 smb2_sync_read(const unsigned int xid
, struct cifs_fid
*pfid
,
1795 struct cifs_io_parms
*parms
, unsigned int *bytes_read
,
1796 char **buf
, int *buf_type
)
1798 parms
->persistent_fid
= pfid
->persistent_fid
;
1799 parms
->volatile_fid
= pfid
->volatile_fid
;
1800 return SMB2_read(xid
, parms
, bytes_read
, buf
, buf_type
);
1804 smb2_sync_write(const unsigned int xid
, struct cifs_fid
*pfid
,
1805 struct cifs_io_parms
*parms
, unsigned int *written
,
1806 struct kvec
*iov
, unsigned long nr_segs
)
1809 parms
->persistent_fid
= pfid
->persistent_fid
;
1810 parms
->volatile_fid
= pfid
->volatile_fid
;
1811 return SMB2_write(xid
, parms
, written
, iov
, nr_segs
);
1814 /* Set or clear the SPARSE_FILE attribute based on value passed in setsparse */
1815 static bool smb2_set_sparse(const unsigned int xid
, struct cifs_tcon
*tcon
,
1816 struct cifsFileInfo
*cfile
, struct inode
*inode
, __u8 setsparse
)
1818 struct cifsInodeInfo
*cifsi
;
1821 cifsi
= CIFS_I(inode
);
1823 /* if file already sparse don't bother setting sparse again */
1824 if ((cifsi
->cifsAttrs
& FILE_ATTRIBUTE_SPARSE_FILE
) && setsparse
)
1825 return true; /* already sparse */
1827 if (!(cifsi
->cifsAttrs
& FILE_ATTRIBUTE_SPARSE_FILE
) && !setsparse
)
1828 return true; /* already not sparse */
1831 * Can't check for sparse support on share the usual way via the
1832 * FS attribute info (FILE_SUPPORTS_SPARSE_FILES) on the share
1833 * since Samba server doesn't set the flag on the share, yet
1834 * supports the set sparse FSCTL and returns sparse correctly
1835 * in the file attributes. If we fail setting sparse though we
1836 * mark that server does not support sparse files for this share
1837 * to avoid repeatedly sending the unsupported fsctl to server
1838 * if the file is repeatedly extended.
1840 if (tcon
->broken_sparse_sup
)
1843 rc
= SMB2_ioctl(xid
, tcon
, cfile
->fid
.persistent_fid
,
1844 cfile
->fid
.volatile_fid
, FSCTL_SET_SPARSE
,
1846 &setsparse
, 1, CIFSMaxBufSize
, NULL
, NULL
);
1848 tcon
->broken_sparse_sup
= true;
1849 cifs_dbg(FYI
, "set sparse rc = %d\n", rc
);
1854 cifsi
->cifsAttrs
|= FILE_ATTRIBUTE_SPARSE_FILE
;
1856 cifsi
->cifsAttrs
&= (~FILE_ATTRIBUTE_SPARSE_FILE
);
1862 smb2_set_file_size(const unsigned int xid
, struct cifs_tcon
*tcon
,
1863 struct cifsFileInfo
*cfile
, __u64 size
, bool set_alloc
)
1865 __le64 eof
= cpu_to_le64(size
);
1866 struct inode
*inode
;
1869 * If extending file more than one page make sparse. Many Linux fs
1870 * make files sparse by default when extending via ftruncate
1872 inode
= d_inode(cfile
->dentry
);
1874 if (!set_alloc
&& (size
> inode
->i_size
+ 8192)) {
1875 __u8 set_sparse
= 1;
1877 /* whether set sparse succeeds or not, extend the file */
1878 smb2_set_sparse(xid
, tcon
, cfile
, inode
, set_sparse
);
1881 return SMB2_set_eof(xid
, tcon
, cfile
->fid
.persistent_fid
,
1882 cfile
->fid
.volatile_fid
, cfile
->pid
, &eof
);
1886 smb2_duplicate_extents(const unsigned int xid
,
1887 struct cifsFileInfo
*srcfile
,
1888 struct cifsFileInfo
*trgtfile
, u64 src_off
,
1889 u64 len
, u64 dest_off
)
1892 unsigned int ret_data_len
;
1893 struct duplicate_extents_to_file dup_ext_buf
;
1894 struct cifs_tcon
*tcon
= tlink_tcon(trgtfile
->tlink
);
1896 /* server fileays advertise duplicate extent support with this flag */
1897 if ((le32_to_cpu(tcon
->fsAttrInfo
.Attributes
) &
1898 FILE_SUPPORTS_BLOCK_REFCOUNTING
) == 0)
1901 dup_ext_buf
.VolatileFileHandle
= srcfile
->fid
.volatile_fid
;
1902 dup_ext_buf
.PersistentFileHandle
= srcfile
->fid
.persistent_fid
;
1903 dup_ext_buf
.SourceFileOffset
= cpu_to_le64(src_off
);
1904 dup_ext_buf
.TargetFileOffset
= cpu_to_le64(dest_off
);
1905 dup_ext_buf
.ByteCount
= cpu_to_le64(len
);
1906 cifs_dbg(FYI
, "Duplicate extents: src off %lld dst off %lld len %lld\n",
1907 src_off
, dest_off
, len
);
1909 rc
= smb2_set_file_size(xid
, tcon
, trgtfile
, dest_off
+ len
, false);
1911 goto duplicate_extents_out
;
1913 rc
= SMB2_ioctl(xid
, tcon
, trgtfile
->fid
.persistent_fid
,
1914 trgtfile
->fid
.volatile_fid
,
1915 FSCTL_DUPLICATE_EXTENTS_TO_FILE
,
1916 true /* is_fsctl */,
1917 (char *)&dup_ext_buf
,
1918 sizeof(struct duplicate_extents_to_file
),
1919 CIFSMaxBufSize
, NULL
,
1922 if (ret_data_len
> 0)
1923 cifs_dbg(FYI
, "Non-zero response length in duplicate extents\n");
1925 duplicate_extents_out
:
1930 smb2_set_compression(const unsigned int xid
, struct cifs_tcon
*tcon
,
1931 struct cifsFileInfo
*cfile
)
1933 return SMB2_set_compression(xid
, tcon
, cfile
->fid
.persistent_fid
,
1934 cfile
->fid
.volatile_fid
);
1938 smb3_set_integrity(const unsigned int xid
, struct cifs_tcon
*tcon
,
1939 struct cifsFileInfo
*cfile
)
1941 struct fsctl_set_integrity_information_req integr_info
;
1942 unsigned int ret_data_len
;
1944 integr_info
.ChecksumAlgorithm
= cpu_to_le16(CHECKSUM_TYPE_UNCHANGED
);
1945 integr_info
.Flags
= 0;
1946 integr_info
.Reserved
= 0;
1948 return SMB2_ioctl(xid
, tcon
, cfile
->fid
.persistent_fid
,
1949 cfile
->fid
.volatile_fid
,
1950 FSCTL_SET_INTEGRITY_INFORMATION
,
1951 true /* is_fsctl */,
1952 (char *)&integr_info
,
1953 sizeof(struct fsctl_set_integrity_information_req
),
1954 CIFSMaxBufSize
, NULL
,
1959 /* GMT Token is @GMT-YYYY.MM.DD-HH.MM.SS Unicode which is 48 bytes + null */
1960 #define GMT_TOKEN_SIZE 50
1962 #define MIN_SNAPSHOT_ARRAY_SIZE 16 /* See MS-SMB2 section 3.3.5.15.1 */
1965 * Input buffer contains (empty) struct smb_snapshot array with size filled in
1966 * For output see struct SRV_SNAPSHOT_ARRAY in MS-SMB2 section 2.2.32.2
1969 smb3_enum_snapshots(const unsigned int xid
, struct cifs_tcon
*tcon
,
1970 struct cifsFileInfo
*cfile
, void __user
*ioc_buf
)
1972 char *retbuf
= NULL
;
1973 unsigned int ret_data_len
= 0;
1975 u32 max_response_size
;
1976 struct smb_snapshot_array snapshot_in
;
1979 * On the first query to enumerate the list of snapshots available
1980 * for this volume the buffer begins with 0 (number of snapshots
1981 * which can be returned is zero since at that point we do not know
1982 * how big the buffer needs to be). On the second query,
1983 * it (ret_data_len) is set to number of snapshots so we can
1984 * know to set the maximum response size larger (see below).
1986 if (get_user(ret_data_len
, (unsigned int __user
*)ioc_buf
))
1990 * Note that for snapshot queries that servers like Azure expect that
1991 * the first query be minimal size (and just used to get the number/size
1992 * of previous versions) so response size must be specified as EXACTLY
1993 * sizeof(struct snapshot_array) which is 16 when rounded up to multiple
1996 if (ret_data_len
== 0)
1997 max_response_size
= MIN_SNAPSHOT_ARRAY_SIZE
;
1999 max_response_size
= CIFSMaxBufSize
;
2001 rc
= SMB2_ioctl(xid
, tcon
, cfile
->fid
.persistent_fid
,
2002 cfile
->fid
.volatile_fid
,
2003 FSCTL_SRV_ENUMERATE_SNAPSHOTS
,
2004 true /* is_fsctl */,
2005 NULL
, 0 /* no input data */, max_response_size
,
2008 cifs_dbg(FYI
, "enum snaphots ioctl returned %d and ret buflen is %d\n",
2013 if (ret_data_len
&& (ioc_buf
!= NULL
) && (retbuf
!= NULL
)) {
2015 if (copy_from_user(&snapshot_in
, ioc_buf
,
2016 sizeof(struct smb_snapshot_array
))) {
2023 * Check for min size, ie not large enough to fit even one GMT
2024 * token (snapshot). On the first ioctl some users may pass in
2025 * smaller size (or zero) to simply get the size of the array
2026 * so the user space caller can allocate sufficient memory
2027 * and retry the ioctl again with larger array size sufficient
2028 * to hold all of the snapshot GMT tokens on the second try.
2030 if (snapshot_in
.snapshot_array_size
< GMT_TOKEN_SIZE
)
2031 ret_data_len
= sizeof(struct smb_snapshot_array
);
2034 * We return struct SRV_SNAPSHOT_ARRAY, followed by
2035 * the snapshot array (of 50 byte GMT tokens) each
2036 * representing an available previous version of the data
2038 if (ret_data_len
> (snapshot_in
.snapshot_array_size
+
2039 sizeof(struct smb_snapshot_array
)))
2040 ret_data_len
= snapshot_in
.snapshot_array_size
+
2041 sizeof(struct smb_snapshot_array
);
2043 if (copy_to_user(ioc_buf
, retbuf
, ret_data_len
))
2052 smb2_query_dir_first(const unsigned int xid
, struct cifs_tcon
*tcon
,
2053 const char *path
, struct cifs_sb_info
*cifs_sb
,
2054 struct cifs_fid
*fid
, __u16 search_flags
,
2055 struct cifs_search_info
*srch_inf
)
2058 struct smb_rqst rqst
[2];
2059 struct kvec rsp_iov
[2];
2060 int resp_buftype
[2];
2061 struct kvec open_iov
[SMB2_CREATE_IOV_SIZE
];
2062 struct kvec qd_iov
[SMB2_QUERY_DIRECTORY_IOV_SIZE
];
2064 u8 oplock
= SMB2_OPLOCK_LEVEL_NONE
;
2065 struct cifs_open_parms oparms
;
2066 struct smb2_query_directory_rsp
*qd_rsp
= NULL
;
2067 struct smb2_create_rsp
*op_rsp
= NULL
;
2069 utf16_path
= cifs_convert_path_to_utf16(path
, cifs_sb
);
2073 if (smb3_encryption_required(tcon
))
2074 flags
|= CIFS_TRANSFORM_REQ
;
2076 memset(rqst
, 0, sizeof(rqst
));
2077 resp_buftype
[0] = resp_buftype
[1] = CIFS_NO_BUFFER
;
2078 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
= FILE_READ_ATTRIBUTES
| FILE_READ_DATA
;
2087 oparms
.disposition
= FILE_OPEN
;
2088 if (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 /* Query directory */
2101 srch_inf
->entries_in_buffer
= 0;
2102 srch_inf
->index_of_last_entry
= 2;
2104 memset(&qd_iov
, 0, sizeof(qd_iov
));
2105 rqst
[1].rq_iov
= qd_iov
;
2106 rqst
[1].rq_nvec
= SMB2_QUERY_DIRECTORY_IOV_SIZE
;
2108 rc
= SMB2_query_directory_init(xid
, tcon
, &rqst
[1],
2109 COMPOUND_FID
, COMPOUND_FID
,
2110 0, srch_inf
->info_level
);
2114 smb2_set_related(&rqst
[1]);
2116 rc
= compound_send_recv(xid
, tcon
->ses
, flags
, 2, rqst
,
2117 resp_buftype
, rsp_iov
);
2119 /* If the open failed there is nothing to do */
2120 op_rsp
= (struct smb2_create_rsp
*)rsp_iov
[0].iov_base
;
2121 if (op_rsp
== NULL
|| op_rsp
->sync_hdr
.Status
!= STATUS_SUCCESS
) {
2122 cifs_dbg(FYI
, "query_dir_first: open failed rc=%d\n", rc
);
2125 fid
->persistent_fid
= op_rsp
->PersistentFileId
;
2126 fid
->volatile_fid
= op_rsp
->VolatileFileId
;
2128 /* Anything else than ENODATA means a genuine error */
2129 if (rc
&& rc
!= -ENODATA
) {
2130 SMB2_close(xid
, tcon
, fid
->persistent_fid
, fid
->volatile_fid
);
2131 cifs_dbg(FYI
, "query_dir_first: query directory failed rc=%d\n", rc
);
2132 trace_smb3_query_dir_err(xid
, fid
->persistent_fid
,
2133 tcon
->tid
, tcon
->ses
->Suid
, 0, 0, rc
);
2137 qd_rsp
= (struct smb2_query_directory_rsp
*)rsp_iov
[1].iov_base
;
2138 if (qd_rsp
->sync_hdr
.Status
== STATUS_NO_MORE_FILES
) {
2139 trace_smb3_query_dir_done(xid
, fid
->persistent_fid
,
2140 tcon
->tid
, tcon
->ses
->Suid
, 0, 0);
2141 srch_inf
->endOfSearch
= true;
2146 rc
= smb2_parse_query_directory(tcon
, &rsp_iov
[1], resp_buftype
[1],
2149 trace_smb3_query_dir_err(xid
, fid
->persistent_fid
, tcon
->tid
,
2150 tcon
->ses
->Suid
, 0, 0, rc
);
2153 resp_buftype
[1] = CIFS_NO_BUFFER
;
2155 trace_smb3_query_dir_done(xid
, fid
->persistent_fid
, tcon
->tid
,
2156 tcon
->ses
->Suid
, 0, srch_inf
->entries_in_buffer
);
2160 SMB2_open_free(&rqst
[0]);
2161 SMB2_query_directory_free(&rqst
[1]);
2162 free_rsp_buf(resp_buftype
[0], rsp_iov
[0].iov_base
);
2163 free_rsp_buf(resp_buftype
[1], rsp_iov
[1].iov_base
);
2168 smb2_query_dir_next(const unsigned int xid
, struct cifs_tcon
*tcon
,
2169 struct cifs_fid
*fid
, __u16 search_flags
,
2170 struct cifs_search_info
*srch_inf
)
2172 return SMB2_query_directory(xid
, tcon
, fid
->persistent_fid
,
2173 fid
->volatile_fid
, 0, srch_inf
);
2177 smb2_close_dir(const unsigned int xid
, struct cifs_tcon
*tcon
,
2178 struct cifs_fid
*fid
)
2180 return SMB2_close(xid
, tcon
, fid
->persistent_fid
, fid
->volatile_fid
);
2184 * If we negotiate SMB2 protocol and get STATUS_PENDING - update
2185 * the number of credits and return true. Otherwise - return false.
2188 smb2_is_status_pending(char *buf
, struct TCP_Server_Info
*server
)
2190 struct smb2_sync_hdr
*shdr
= (struct smb2_sync_hdr
*)buf
;
2192 if (shdr
->Status
!= STATUS_PENDING
)
2195 if (shdr
->CreditRequest
) {
2196 spin_lock(&server
->req_lock
);
2197 server
->credits
+= le16_to_cpu(shdr
->CreditRequest
);
2198 spin_unlock(&server
->req_lock
);
2199 wake_up(&server
->request_q
);
2206 smb2_is_session_expired(char *buf
)
2208 struct smb2_sync_hdr
*shdr
= (struct smb2_sync_hdr
*)buf
;
2210 if (shdr
->Status
!= STATUS_NETWORK_SESSION_EXPIRED
&&
2211 shdr
->Status
!= STATUS_USER_SESSION_DELETED
)
2214 trace_smb3_ses_expired(shdr
->TreeId
, shdr
->SessionId
,
2215 le16_to_cpu(shdr
->Command
),
2216 le64_to_cpu(shdr
->MessageId
));
2217 cifs_dbg(FYI
, "Session expired or deleted\n");
2223 smb2_oplock_response(struct cifs_tcon
*tcon
, struct cifs_fid
*fid
,
2224 struct cifsInodeInfo
*cinode
)
2226 if (tcon
->ses
->server
->capabilities
& SMB2_GLOBAL_CAP_LEASING
)
2227 return SMB2_lease_break(0, tcon
, cinode
->lease_key
,
2228 smb2_get_lease_state(cinode
));
2230 return SMB2_oplock_break(0, tcon
, fid
->persistent_fid
,
2232 CIFS_CACHE_READ(cinode
) ? 1 : 0);
2236 smb2_set_related(struct smb_rqst
*rqst
)
2238 struct smb2_sync_hdr
*shdr
;
2240 shdr
= (struct smb2_sync_hdr
*)(rqst
->rq_iov
[0].iov_base
);
2242 cifs_dbg(FYI
, "shdr NULL in smb2_set_related\n");
2245 shdr
->Flags
|= SMB2_FLAGS_RELATED_OPERATIONS
;
2248 char smb2_padding
[7] = {0, 0, 0, 0, 0, 0, 0};
2251 smb2_set_next_command(struct cifs_tcon
*tcon
, struct smb_rqst
*rqst
)
2253 struct smb2_sync_hdr
*shdr
;
2254 struct cifs_ses
*ses
= tcon
->ses
;
2255 struct TCP_Server_Info
*server
= ses
->server
;
2256 unsigned long len
= smb_rqst_len(server
, rqst
);
2259 shdr
= (struct smb2_sync_hdr
*)(rqst
->rq_iov
[0].iov_base
);
2261 cifs_dbg(FYI
, "shdr NULL in smb2_set_next_command\n");
2265 /* SMB headers in a compound are 8 byte aligned. */
2267 /* No padding needed */
2271 num_padding
= 8 - (len
& 7);
2272 if (!smb3_encryption_required(tcon
)) {
2274 * If we do not have encryption then we can just add an extra
2275 * iov for the padding.
2277 rqst
->rq_iov
[rqst
->rq_nvec
].iov_base
= smb2_padding
;
2278 rqst
->rq_iov
[rqst
->rq_nvec
].iov_len
= num_padding
;
2283 * We can not add a small padding iov for the encryption case
2284 * because the encryption framework can not handle the padding
2286 * We have to flatten this into a single buffer and add
2287 * the padding to it.
2289 for (i
= 1; i
< rqst
->rq_nvec
; i
++) {
2290 memcpy(rqst
->rq_iov
[0].iov_base
+
2291 rqst
->rq_iov
[0].iov_len
,
2292 rqst
->rq_iov
[i
].iov_base
,
2293 rqst
->rq_iov
[i
].iov_len
);
2294 rqst
->rq_iov
[0].iov_len
+= rqst
->rq_iov
[i
].iov_len
;
2296 memset(rqst
->rq_iov
[0].iov_base
+ rqst
->rq_iov
[0].iov_len
,
2298 rqst
->rq_iov
[0].iov_len
+= num_padding
;
2304 shdr
->NextCommand
= cpu_to_le32(len
);
2308 * Passes the query info response back to the caller on success.
2309 * Caller need to free this with free_rsp_buf().
2312 smb2_query_info_compound(const unsigned int xid
, struct cifs_tcon
*tcon
,
2313 __le16
*utf16_path
, u32 desired_access
,
2314 u32
class, u32 type
, u32 output_len
,
2315 struct kvec
*rsp
, int *buftype
,
2316 struct cifs_sb_info
*cifs_sb
)
2318 struct cifs_ses
*ses
= tcon
->ses
;
2320 struct smb_rqst rqst
[3];
2321 int resp_buftype
[3];
2322 struct kvec rsp_iov
[3];
2323 struct kvec open_iov
[SMB2_CREATE_IOV_SIZE
];
2324 struct kvec qi_iov
[1];
2325 struct kvec close_iov
[1];
2326 u8 oplock
= SMB2_OPLOCK_LEVEL_NONE
;
2327 struct cifs_open_parms oparms
;
2328 struct cifs_fid fid
;
2331 if (smb3_encryption_required(tcon
))
2332 flags
|= CIFS_TRANSFORM_REQ
;
2334 memset(rqst
, 0, sizeof(rqst
));
2335 resp_buftype
[0] = resp_buftype
[1] = resp_buftype
[2] = CIFS_NO_BUFFER
;
2336 memset(rsp_iov
, 0, sizeof(rsp_iov
));
2338 memset(&open_iov
, 0, sizeof(open_iov
));
2339 rqst
[0].rq_iov
= open_iov
;
2340 rqst
[0].rq_nvec
= SMB2_CREATE_IOV_SIZE
;
2343 oparms
.desired_access
= desired_access
;
2344 oparms
.disposition
= FILE_OPEN
;
2345 if (cifs_sb
&& backup_cred(cifs_sb
))
2346 oparms
.create_options
= CREATE_OPEN_BACKUP_INTENT
;
2348 oparms
.create_options
= 0;
2350 oparms
.reconnect
= false;
2352 rc
= SMB2_open_init(tcon
, &rqst
[0], &oplock
, &oparms
, utf16_path
);
2355 smb2_set_next_command(tcon
, &rqst
[0]);
2357 memset(&qi_iov
, 0, sizeof(qi_iov
));
2358 rqst
[1].rq_iov
= qi_iov
;
2359 rqst
[1].rq_nvec
= 1;
2361 rc
= SMB2_query_info_init(tcon
, &rqst
[1], COMPOUND_FID
, COMPOUND_FID
,
2367 smb2_set_next_command(tcon
, &rqst
[1]);
2368 smb2_set_related(&rqst
[1]);
2370 memset(&close_iov
, 0, sizeof(close_iov
));
2371 rqst
[2].rq_iov
= close_iov
;
2372 rqst
[2].rq_nvec
= 1;
2374 rc
= SMB2_close_init(tcon
, &rqst
[2], COMPOUND_FID
, COMPOUND_FID
, false);
2377 smb2_set_related(&rqst
[2]);
2379 rc
= compound_send_recv(xid
, ses
, flags
, 3, rqst
,
2380 resp_buftype
, rsp_iov
);
2382 free_rsp_buf(resp_buftype
[1], rsp_iov
[1].iov_base
);
2383 if (rc
== -EREMCHG
) {
2384 tcon
->need_reconnect
= true;
2385 printk_once(KERN_WARNING
"server share %s deleted\n",
2391 *buftype
= resp_buftype
[1];
2394 SMB2_open_free(&rqst
[0]);
2395 SMB2_query_info_free(&rqst
[1]);
2396 SMB2_close_free(&rqst
[2]);
2397 free_rsp_buf(resp_buftype
[0], rsp_iov
[0].iov_base
);
2398 free_rsp_buf(resp_buftype
[2], rsp_iov
[2].iov_base
);
2403 smb2_queryfs(const unsigned int xid
, struct cifs_tcon
*tcon
,
2404 struct kstatfs
*buf
)
2406 struct smb2_query_info_rsp
*rsp
;
2407 struct smb2_fs_full_size_info
*info
= NULL
;
2408 __le16 utf16_path
= 0; /* Null - open root of share */
2409 struct kvec rsp_iov
= {NULL
, 0};
2410 int buftype
= CIFS_NO_BUFFER
;
2414 rc
= smb2_query_info_compound(xid
, tcon
, &utf16_path
,
2415 FILE_READ_ATTRIBUTES
,
2416 FS_FULL_SIZE_INFORMATION
,
2417 SMB2_O_INFO_FILESYSTEM
,
2418 sizeof(struct smb2_fs_full_size_info
),
2419 &rsp_iov
, &buftype
, NULL
);
2423 rsp
= (struct smb2_query_info_rsp
*)rsp_iov
.iov_base
;
2424 buf
->f_type
= SMB2_MAGIC_NUMBER
;
2425 info
= (struct smb2_fs_full_size_info
*)(
2426 le16_to_cpu(rsp
->OutputBufferOffset
) + (char *)rsp
);
2427 rc
= smb2_validate_iov(le16_to_cpu(rsp
->OutputBufferOffset
),
2428 le32_to_cpu(rsp
->OutputBufferLength
),
2430 sizeof(struct smb2_fs_full_size_info
));
2432 smb2_copy_fs_info_to_kstatfs(info
, buf
);
2435 free_rsp_buf(buftype
, rsp_iov
.iov_base
);
2440 smb311_queryfs(const unsigned int xid
, struct cifs_tcon
*tcon
,
2441 struct kstatfs
*buf
)
2444 __le16 srch_path
= 0; /* Null - open root of share */
2445 u8 oplock
= SMB2_OPLOCK_LEVEL_NONE
;
2446 struct cifs_open_parms oparms
;
2447 struct cifs_fid fid
;
2449 if (!tcon
->posix_extensions
)
2450 return smb2_queryfs(xid
, tcon
, buf
);
2453 oparms
.desired_access
= FILE_READ_ATTRIBUTES
;
2454 oparms
.disposition
= FILE_OPEN
;
2455 oparms
.create_options
= 0;
2457 oparms
.reconnect
= false;
2459 rc
= SMB2_open(xid
, &oparms
, &srch_path
, &oplock
, NULL
, NULL
, NULL
);
2463 rc
= SMB311_posix_qfs_info(xid
, tcon
, fid
.persistent_fid
,
2464 fid
.volatile_fid
, buf
);
2465 buf
->f_type
= SMB2_MAGIC_NUMBER
;
2466 SMB2_close(xid
, tcon
, fid
.persistent_fid
, fid
.volatile_fid
);
2471 smb2_compare_fids(struct cifsFileInfo
*ob1
, struct cifsFileInfo
*ob2
)
2473 return ob1
->fid
.persistent_fid
== ob2
->fid
.persistent_fid
&&
2474 ob1
->fid
.volatile_fid
== ob2
->fid
.volatile_fid
;
2478 smb2_mand_lock(const unsigned int xid
, struct cifsFileInfo
*cfile
, __u64 offset
,
2479 __u64 length
, __u32 type
, int lock
, int unlock
, bool wait
)
2481 if (unlock
&& !lock
)
2482 type
= SMB2_LOCKFLAG_UNLOCK
;
2483 return SMB2_lock(xid
, tlink_tcon(cfile
->tlink
),
2484 cfile
->fid
.persistent_fid
, cfile
->fid
.volatile_fid
,
2485 current
->tgid
, length
, offset
, type
, wait
);
2489 smb2_get_lease_key(struct inode
*inode
, struct cifs_fid
*fid
)
2491 memcpy(fid
->lease_key
, CIFS_I(inode
)->lease_key
, SMB2_LEASE_KEY_SIZE
);
2495 smb2_set_lease_key(struct inode
*inode
, struct cifs_fid
*fid
)
2497 memcpy(CIFS_I(inode
)->lease_key
, fid
->lease_key
, SMB2_LEASE_KEY_SIZE
);
2501 smb2_new_lease_key(struct cifs_fid
*fid
)
2503 generate_random_uuid(fid
->lease_key
);
2507 smb2_get_dfs_refer(const unsigned int xid
, struct cifs_ses
*ses
,
2508 const char *search_name
,
2509 struct dfs_info3_param
**target_nodes
,
2510 unsigned int *num_of_nodes
,
2511 const struct nls_table
*nls_codepage
, int remap
)
2514 __le16
*utf16_path
= NULL
;
2515 int utf16_path_len
= 0;
2516 struct cifs_tcon
*tcon
;
2517 struct fsctl_get_dfs_referral_req
*dfs_req
= NULL
;
2518 struct get_dfs_referral_rsp
*dfs_rsp
= NULL
;
2519 u32 dfs_req_size
= 0, dfs_rsp_size
= 0;
2521 cifs_dbg(FYI
, "%s: path: %s\n", __func__
, search_name
);
2524 * Try to use the IPC tcon, otherwise just use any
2526 tcon
= ses
->tcon_ipc
;
2528 spin_lock(&cifs_tcp_ses_lock
);
2529 tcon
= list_first_entry_or_null(&ses
->tcon_list
,
2534 spin_unlock(&cifs_tcp_ses_lock
);
2538 cifs_dbg(VFS
, "session %p has no tcon available for a dfs referral request\n",
2544 utf16_path
= cifs_strndup_to_utf16(search_name
, PATH_MAX
,
2546 nls_codepage
, remap
);
2552 dfs_req_size
= sizeof(*dfs_req
) + utf16_path_len
;
2553 dfs_req
= kzalloc(dfs_req_size
, GFP_KERNEL
);
2559 /* Highest DFS referral version understood */
2560 dfs_req
->MaxReferralLevel
= DFS_VERSION
;
2562 /* Path to resolve in an UTF-16 null-terminated string */
2563 memcpy(dfs_req
->RequestFileName
, utf16_path
, utf16_path_len
);
2566 rc
= SMB2_ioctl(xid
, tcon
, NO_FILE_ID
, NO_FILE_ID
,
2567 FSCTL_DFS_GET_REFERRALS
,
2568 true /* is_fsctl */,
2569 (char *)dfs_req
, dfs_req_size
, CIFSMaxBufSize
,
2570 (char **)&dfs_rsp
, &dfs_rsp_size
);
2571 } while (rc
== -EAGAIN
);
2574 if ((rc
!= -ENOENT
) && (rc
!= -EOPNOTSUPP
))
2575 cifs_tcon_dbg(VFS
, "ioctl error in %s rc=%d\n", __func__
, rc
);
2579 rc
= parse_dfs_referrals(dfs_rsp
, dfs_rsp_size
,
2580 num_of_nodes
, target_nodes
,
2581 nls_codepage
, remap
, search_name
,
2582 true /* is_unicode */);
2584 cifs_tcon_dbg(VFS
, "parse error in %s rc=%d\n", __func__
, rc
);
2589 if (tcon
&& !tcon
->ipc
) {
2590 /* ipc tcons are not refcounted */
2591 spin_lock(&cifs_tcp_ses_lock
);
2593 spin_unlock(&cifs_tcp_ses_lock
);
2602 parse_reparse_posix(struct reparse_posix_data
*symlink_buf
,
2603 u32 plen
, char **target_path
,
2604 struct cifs_sb_info
*cifs_sb
)
2608 /* See MS-FSCC 2.1.2.6 for the 'NFS' style reparse tags */
2609 len
= le16_to_cpu(symlink_buf
->ReparseDataLength
);
2611 if (le64_to_cpu(symlink_buf
->InodeType
) != NFS_SPECFILE_LNK
) {
2612 cifs_dbg(VFS
, "%lld not a supported symlink type\n",
2613 le64_to_cpu(symlink_buf
->InodeType
));
2617 *target_path
= cifs_strndup_from_utf16(
2618 symlink_buf
->PathBuffer
,
2619 len
, true, cifs_sb
->local_nls
);
2620 if (!(*target_path
))
2623 convert_delimiter(*target_path
, '/');
2624 cifs_dbg(FYI
, "%s: target path: %s\n", __func__
, *target_path
);
2630 parse_reparse_symlink(struct reparse_symlink_data_buffer
*symlink_buf
,
2631 u32 plen
, char **target_path
,
2632 struct cifs_sb_info
*cifs_sb
)
2634 unsigned int sub_len
;
2635 unsigned int sub_offset
;
2637 /* We handle Symbolic Link reparse tag here. See: MS-FSCC 2.1.2.4 */
2639 sub_offset
= le16_to_cpu(symlink_buf
->SubstituteNameOffset
);
2640 sub_len
= le16_to_cpu(symlink_buf
->SubstituteNameLength
);
2641 if (sub_offset
+ 20 > plen
||
2642 sub_offset
+ sub_len
+ 20 > plen
) {
2643 cifs_dbg(VFS
, "srv returned malformed symlink buffer\n");
2647 *target_path
= cifs_strndup_from_utf16(
2648 symlink_buf
->PathBuffer
+ sub_offset
,
2649 sub_len
, true, cifs_sb
->local_nls
);
2650 if (!(*target_path
))
2653 convert_delimiter(*target_path
, '/');
2654 cifs_dbg(FYI
, "%s: target path: %s\n", __func__
, *target_path
);
2660 parse_reparse_point(struct reparse_data_buffer
*buf
,
2661 u32 plen
, char **target_path
,
2662 struct cifs_sb_info
*cifs_sb
)
2664 if (plen
< sizeof(struct reparse_data_buffer
)) {
2665 cifs_dbg(VFS
, "reparse buffer is too small. Must be "
2666 "at least 8 bytes but was %d\n", plen
);
2670 if (plen
< le16_to_cpu(buf
->ReparseDataLength
) +
2671 sizeof(struct reparse_data_buffer
)) {
2672 cifs_dbg(VFS
, "srv returned invalid reparse buf "
2673 "length: %d\n", plen
);
2677 /* See MS-FSCC 2.1.2 */
2678 switch (le32_to_cpu(buf
->ReparseTag
)) {
2679 case IO_REPARSE_TAG_NFS
:
2680 return parse_reparse_posix(
2681 (struct reparse_posix_data
*)buf
,
2682 plen
, target_path
, cifs_sb
);
2683 case IO_REPARSE_TAG_SYMLINK
:
2684 return parse_reparse_symlink(
2685 (struct reparse_symlink_data_buffer
*)buf
,
2686 plen
, target_path
, cifs_sb
);
2688 cifs_dbg(VFS
, "srv returned unknown symlink buffer "
2689 "tag:0x%08x\n", le32_to_cpu(buf
->ReparseTag
));
2694 #define SMB2_SYMLINK_STRUCT_SIZE \
2695 (sizeof(struct smb2_err_rsp) - 1 + sizeof(struct smb2_symlink_err_rsp))
2698 smb2_query_symlink(const unsigned int xid
, struct cifs_tcon
*tcon
,
2699 struct cifs_sb_info
*cifs_sb
, const char *full_path
,
2700 char **target_path
, bool is_reparse_point
)
2703 __le16
*utf16_path
= NULL
;
2704 __u8 oplock
= SMB2_OPLOCK_LEVEL_NONE
;
2705 struct cifs_open_parms oparms
;
2706 struct cifs_fid fid
;
2707 struct kvec err_iov
= {NULL
, 0};
2708 struct smb2_err_rsp
*err_buf
= NULL
;
2709 struct smb2_symlink_err_rsp
*symlink
;
2710 unsigned int sub_len
;
2711 unsigned int sub_offset
;
2712 unsigned int print_len
;
2713 unsigned int print_offset
;
2715 struct smb_rqst rqst
[3];
2716 int resp_buftype
[3];
2717 struct kvec rsp_iov
[3];
2718 struct kvec open_iov
[SMB2_CREATE_IOV_SIZE
];
2719 struct kvec io_iov
[SMB2_IOCTL_IOV_SIZE
];
2720 struct kvec close_iov
[1];
2721 struct smb2_create_rsp
*create_rsp
;
2722 struct smb2_ioctl_rsp
*ioctl_rsp
;
2723 struct reparse_data_buffer
*reparse_buf
;
2726 cifs_dbg(FYI
, "%s: path: %s\n", __func__
, full_path
);
2728 *target_path
= NULL
;
2730 if (smb3_encryption_required(tcon
))
2731 flags
|= CIFS_TRANSFORM_REQ
;
2733 memset(rqst
, 0, sizeof(rqst
));
2734 resp_buftype
[0] = resp_buftype
[1] = resp_buftype
[2] = CIFS_NO_BUFFER
;
2735 memset(rsp_iov
, 0, sizeof(rsp_iov
));
2737 utf16_path
= cifs_convert_path_to_utf16(full_path
, cifs_sb
);
2742 memset(&open_iov
, 0, sizeof(open_iov
));
2743 rqst
[0].rq_iov
= open_iov
;
2744 rqst
[0].rq_nvec
= SMB2_CREATE_IOV_SIZE
;
2746 memset(&oparms
, 0, sizeof(oparms
));
2748 oparms
.desired_access
= FILE_READ_ATTRIBUTES
;
2749 oparms
.disposition
= FILE_OPEN
;
2751 if (backup_cred(cifs_sb
))
2752 oparms
.create_options
= CREATE_OPEN_BACKUP_INTENT
;
2754 oparms
.create_options
= 0;
2755 if (is_reparse_point
)
2756 oparms
.create_options
= OPEN_REPARSE_POINT
;
2759 oparms
.reconnect
= false;
2761 rc
= SMB2_open_init(tcon
, &rqst
[0], &oplock
, &oparms
, utf16_path
);
2764 smb2_set_next_command(tcon
, &rqst
[0]);
2768 memset(&io_iov
, 0, sizeof(io_iov
));
2769 rqst
[1].rq_iov
= io_iov
;
2770 rqst
[1].rq_nvec
= SMB2_IOCTL_IOV_SIZE
;
2772 rc
= SMB2_ioctl_init(tcon
, &rqst
[1], fid
.persistent_fid
,
2773 fid
.volatile_fid
, FSCTL_GET_REPARSE_POINT
,
2774 true /* is_fctl */, NULL
, 0,
2776 MAX_SMB2_CREATE_RESPONSE_SIZE
-
2777 MAX_SMB2_CLOSE_RESPONSE_SIZE
);
2781 smb2_set_next_command(tcon
, &rqst
[1]);
2782 smb2_set_related(&rqst
[1]);
2786 memset(&close_iov
, 0, sizeof(close_iov
));
2787 rqst
[2].rq_iov
= close_iov
;
2788 rqst
[2].rq_nvec
= 1;
2790 rc
= SMB2_close_init(tcon
, &rqst
[2], COMPOUND_FID
, COMPOUND_FID
, false);
2794 smb2_set_related(&rqst
[2]);
2796 rc
= compound_send_recv(xid
, tcon
->ses
, flags
, 3, rqst
,
2797 resp_buftype
, rsp_iov
);
2799 create_rsp
= rsp_iov
[0].iov_base
;
2800 if (create_rsp
&& create_rsp
->sync_hdr
.Status
)
2801 err_iov
= rsp_iov
[0];
2802 ioctl_rsp
= rsp_iov
[1].iov_base
;
2805 * Open was successful and we got an ioctl response.
2807 if ((rc
== 0) && (is_reparse_point
)) {
2808 /* See MS-FSCC 2.3.23 */
2810 reparse_buf
= (struct reparse_data_buffer
*)
2811 ((char *)ioctl_rsp
+
2812 le32_to_cpu(ioctl_rsp
->OutputOffset
));
2813 plen
= le32_to_cpu(ioctl_rsp
->OutputCount
);
2815 if (plen
+ le32_to_cpu(ioctl_rsp
->OutputOffset
) >
2816 rsp_iov
[1].iov_len
) {
2817 cifs_tcon_dbg(VFS
, "srv returned invalid ioctl len: %d\n",
2823 rc
= parse_reparse_point(reparse_buf
, plen
, target_path
,
2828 if (!rc
|| !err_iov
.iov_base
) {
2833 err_buf
= err_iov
.iov_base
;
2834 if (le32_to_cpu(err_buf
->ByteCount
) < sizeof(struct smb2_symlink_err_rsp
) ||
2835 err_iov
.iov_len
< SMB2_SYMLINK_STRUCT_SIZE
) {
2840 symlink
= (struct smb2_symlink_err_rsp
*)err_buf
->ErrorData
;
2841 if (le32_to_cpu(symlink
->SymLinkErrorTag
) != SYMLINK_ERROR_TAG
||
2842 le32_to_cpu(symlink
->ReparseTag
) != IO_REPARSE_TAG_SYMLINK
) {
2847 /* open must fail on symlink - reset rc */
2849 sub_len
= le16_to_cpu(symlink
->SubstituteNameLength
);
2850 sub_offset
= le16_to_cpu(symlink
->SubstituteNameOffset
);
2851 print_len
= le16_to_cpu(symlink
->PrintNameLength
);
2852 print_offset
= le16_to_cpu(symlink
->PrintNameOffset
);
2854 if (err_iov
.iov_len
< SMB2_SYMLINK_STRUCT_SIZE
+ sub_offset
+ sub_len
) {
2859 if (err_iov
.iov_len
<
2860 SMB2_SYMLINK_STRUCT_SIZE
+ print_offset
+ print_len
) {
2865 *target_path
= cifs_strndup_from_utf16(
2866 (char *)symlink
->PathBuffer
+ sub_offset
,
2867 sub_len
, true, cifs_sb
->local_nls
);
2868 if (!(*target_path
)) {
2872 convert_delimiter(*target_path
, '/');
2873 cifs_dbg(FYI
, "%s: target path: %s\n", __func__
, *target_path
);
2876 cifs_dbg(FYI
, "query symlink rc %d\n", rc
);
2878 SMB2_open_free(&rqst
[0]);
2879 SMB2_ioctl_free(&rqst
[1]);
2880 SMB2_close_free(&rqst
[2]);
2881 free_rsp_buf(resp_buftype
[0], rsp_iov
[0].iov_base
);
2882 free_rsp_buf(resp_buftype
[1], rsp_iov
[1].iov_base
);
2883 free_rsp_buf(resp_buftype
[2], rsp_iov
[2].iov_base
);
2887 static struct cifs_ntsd
*
2888 get_smb2_acl_by_fid(struct cifs_sb_info
*cifs_sb
,
2889 const struct cifs_fid
*cifsfid
, u32
*pacllen
)
2891 struct cifs_ntsd
*pntsd
= NULL
;
2893 int rc
= -EOPNOTSUPP
;
2894 struct tcon_link
*tlink
= cifs_sb_tlink(cifs_sb
);
2897 return ERR_CAST(tlink
);
2900 cifs_dbg(FYI
, "trying to get acl\n");
2902 rc
= SMB2_query_acl(xid
, tlink_tcon(tlink
), cifsfid
->persistent_fid
,
2903 cifsfid
->volatile_fid
, (void **)&pntsd
, pacllen
);
2906 cifs_put_tlink(tlink
);
2908 cifs_dbg(FYI
, "%s: rc = %d ACL len %d\n", __func__
, rc
, *pacllen
);
2915 static struct cifs_ntsd
*
2916 get_smb2_acl_by_path(struct cifs_sb_info
*cifs_sb
,
2917 const char *path
, u32
*pacllen
)
2919 struct cifs_ntsd
*pntsd
= NULL
;
2920 u8 oplock
= SMB2_OPLOCK_LEVEL_NONE
;
2923 struct cifs_tcon
*tcon
;
2924 struct tcon_link
*tlink
= cifs_sb_tlink(cifs_sb
);
2925 struct cifs_fid fid
;
2926 struct cifs_open_parms oparms
;
2929 cifs_dbg(FYI
, "get smb3 acl for path %s\n", path
);
2931 return ERR_CAST(tlink
);
2933 tcon
= tlink_tcon(tlink
);
2936 if (backup_cred(cifs_sb
))
2937 oparms
.create_options
= CREATE_OPEN_BACKUP_INTENT
;
2939 oparms
.create_options
= 0;
2941 utf16_path
= cifs_convert_path_to_utf16(path
, cifs_sb
);
2949 oparms
.desired_access
= READ_CONTROL
;
2950 oparms
.disposition
= FILE_OPEN
;
2952 oparms
.reconnect
= false;
2954 rc
= SMB2_open(xid
, &oparms
, utf16_path
, &oplock
, NULL
, NULL
, NULL
);
2957 rc
= SMB2_query_acl(xid
, tlink_tcon(tlink
), fid
.persistent_fid
,
2958 fid
.volatile_fid
, (void **)&pntsd
, pacllen
);
2959 SMB2_close(xid
, tcon
, fid
.persistent_fid
, fid
.volatile_fid
);
2962 cifs_put_tlink(tlink
);
2965 cifs_dbg(FYI
, "%s: rc = %d ACL len %d\n", __func__
, rc
, *pacllen
);
2972 set_smb2_acl(struct cifs_ntsd
*pnntsd
, __u32 acllen
,
2973 struct inode
*inode
, const char *path
, int aclflag
)
2975 u8 oplock
= SMB2_OPLOCK_LEVEL_NONE
;
2977 int rc
, access_flags
= 0;
2978 struct cifs_tcon
*tcon
;
2979 struct cifs_sb_info
*cifs_sb
= CIFS_SB(inode
->i_sb
);
2980 struct tcon_link
*tlink
= cifs_sb_tlink(cifs_sb
);
2981 struct cifs_fid fid
;
2982 struct cifs_open_parms oparms
;
2985 cifs_dbg(FYI
, "set smb3 acl for path %s\n", path
);
2987 return PTR_ERR(tlink
);
2989 tcon
= tlink_tcon(tlink
);
2992 if (backup_cred(cifs_sb
))
2993 oparms
.create_options
= CREATE_OPEN_BACKUP_INTENT
;
2995 oparms
.create_options
= 0;
2997 if (aclflag
== CIFS_ACL_OWNER
|| aclflag
== CIFS_ACL_GROUP
)
2998 access_flags
= WRITE_OWNER
;
3000 access_flags
= WRITE_DAC
;
3002 utf16_path
= cifs_convert_path_to_utf16(path
, cifs_sb
);
3010 oparms
.desired_access
= access_flags
;
3011 oparms
.disposition
= FILE_OPEN
;
3014 oparms
.reconnect
= false;
3016 rc
= SMB2_open(xid
, &oparms
, utf16_path
, &oplock
, NULL
, NULL
, NULL
);
3019 rc
= SMB2_set_acl(xid
, tlink_tcon(tlink
), fid
.persistent_fid
,
3020 fid
.volatile_fid
, pnntsd
, acllen
, aclflag
);
3021 SMB2_close(xid
, tcon
, fid
.persistent_fid
, fid
.volatile_fid
);
3024 cifs_put_tlink(tlink
);
3029 /* Retrieve an ACL from the server */
3030 static struct cifs_ntsd
*
3031 get_smb2_acl(struct cifs_sb_info
*cifs_sb
,
3032 struct inode
*inode
, const char *path
,
3035 struct cifs_ntsd
*pntsd
= NULL
;
3036 struct cifsFileInfo
*open_file
= NULL
;
3039 open_file
= find_readable_file(CIFS_I(inode
), true);
3041 return get_smb2_acl_by_path(cifs_sb
, path
, pacllen
);
3043 pntsd
= get_smb2_acl_by_fid(cifs_sb
, &open_file
->fid
, pacllen
);
3044 cifsFileInfo_put(open_file
);
3048 static long smb3_zero_range(struct file
*file
, struct cifs_tcon
*tcon
,
3049 loff_t offset
, loff_t len
, bool keep_size
)
3051 struct cifs_ses
*ses
= tcon
->ses
;
3052 struct inode
*inode
;
3053 struct cifsInodeInfo
*cifsi
;
3054 struct cifsFileInfo
*cfile
= file
->private_data
;
3055 struct file_zero_data_information fsctl_buf
;
3062 inode
= d_inode(cfile
->dentry
);
3063 cifsi
= CIFS_I(inode
);
3065 trace_smb3_zero_enter(xid
, cfile
->fid
.persistent_fid
, tcon
->tid
,
3066 ses
->Suid
, offset
, len
);
3069 /* if file not oplocked can't be sure whether asking to extend size */
3070 if (!CIFS_CACHE_READ(cifsi
))
3071 if (keep_size
== false) {
3073 trace_smb3_zero_err(xid
, cfile
->fid
.persistent_fid
,
3074 tcon
->tid
, ses
->Suid
, offset
, len
, rc
);
3079 cifs_dbg(FYI
, "Offset %lld len %lld\n", offset
, len
);
3081 fsctl_buf
.FileOffset
= cpu_to_le64(offset
);
3082 fsctl_buf
.BeyondFinalZero
= cpu_to_le64(offset
+ len
);
3084 rc
= SMB2_ioctl(xid
, tcon
, cfile
->fid
.persistent_fid
,
3085 cfile
->fid
.volatile_fid
, FSCTL_SET_ZERO_DATA
, true,
3087 sizeof(struct file_zero_data_information
),
3090 goto zero_range_exit
;
3093 * do we also need to change the size of the file?
3095 if (keep_size
== false && i_size_read(inode
) < offset
+ len
) {
3096 eof
= cpu_to_le64(offset
+ len
);
3097 rc
= SMB2_set_eof(xid
, tcon
, cfile
->fid
.persistent_fid
,
3098 cfile
->fid
.volatile_fid
, cfile
->pid
, &eof
);
3104 trace_smb3_zero_err(xid
, cfile
->fid
.persistent_fid
, tcon
->tid
,
3105 ses
->Suid
, offset
, len
, rc
);
3107 trace_smb3_zero_done(xid
, cfile
->fid
.persistent_fid
, tcon
->tid
,
3108 ses
->Suid
, offset
, len
);
3112 static long smb3_punch_hole(struct file
*file
, struct cifs_tcon
*tcon
,
3113 loff_t offset
, loff_t len
)
3115 struct inode
*inode
;
3116 struct cifsFileInfo
*cfile
= file
->private_data
;
3117 struct file_zero_data_information fsctl_buf
;
3120 __u8 set_sparse
= 1;
3124 inode
= d_inode(cfile
->dentry
);
3126 /* Need to make file sparse, if not already, before freeing range. */
3127 /* Consider adding equivalent for compressed since it could also work */
3128 if (!smb2_set_sparse(xid
, tcon
, cfile
, inode
, set_sparse
)) {
3134 cifs_dbg(FYI
, "Offset %lld len %lld\n", offset
, len
);
3136 fsctl_buf
.FileOffset
= cpu_to_le64(offset
);
3137 fsctl_buf
.BeyondFinalZero
= cpu_to_le64(offset
+ len
);
3139 rc
= SMB2_ioctl(xid
, tcon
, cfile
->fid
.persistent_fid
,
3140 cfile
->fid
.volatile_fid
, FSCTL_SET_ZERO_DATA
,
3141 true /* is_fctl */, (char *)&fsctl_buf
,
3142 sizeof(struct file_zero_data_information
),
3143 CIFSMaxBufSize
, NULL
, NULL
);
3148 static long smb3_simple_falloc(struct file
*file
, struct cifs_tcon
*tcon
,
3149 loff_t off
, loff_t len
, bool keep_size
)
3151 struct inode
*inode
;
3152 struct cifsInodeInfo
*cifsi
;
3153 struct cifsFileInfo
*cfile
= file
->private_data
;
3154 long rc
= -EOPNOTSUPP
;
3160 inode
= d_inode(cfile
->dentry
);
3161 cifsi
= CIFS_I(inode
);
3163 trace_smb3_falloc_enter(xid
, cfile
->fid
.persistent_fid
, tcon
->tid
,
3164 tcon
->ses
->Suid
, off
, len
);
3165 /* if file not oplocked can't be sure whether asking to extend size */
3166 if (!CIFS_CACHE_READ(cifsi
))
3167 if (keep_size
== false) {
3168 trace_smb3_falloc_err(xid
, cfile
->fid
.persistent_fid
,
3169 tcon
->tid
, tcon
->ses
->Suid
, off
, len
, rc
);
3175 * Files are non-sparse by default so falloc may be a no-op
3176 * Must check if file sparse. If not sparse, and not extending
3177 * then no need to do anything since file already allocated
3179 if ((cifsi
->cifsAttrs
& FILE_ATTRIBUTE_SPARSE_FILE
) == 0) {
3180 if (keep_size
== true)
3182 /* check if extending file */
3183 else if (i_size_read(inode
) >= off
+ len
)
3184 /* not extending file and already not sparse */
3186 /* BB: in future add else clause to extend file */
3190 trace_smb3_falloc_err(xid
, cfile
->fid
.persistent_fid
,
3191 tcon
->tid
, tcon
->ses
->Suid
, off
, len
, rc
);
3193 trace_smb3_falloc_done(xid
, cfile
->fid
.persistent_fid
,
3194 tcon
->tid
, tcon
->ses
->Suid
, off
, len
);
3199 if ((keep_size
== true) || (i_size_read(inode
) >= off
+ len
)) {
3201 * Check if falloc starts within first few pages of file
3202 * and ends within a few pages of the end of file to
3203 * ensure that most of file is being forced to be
3204 * fallocated now. If so then setting whole file sparse
3205 * ie potentially making a few extra pages at the beginning
3206 * or end of the file non-sparse via set_sparse is harmless.
3208 if ((off
> 8192) || (off
+ len
+ 8192 < i_size_read(inode
))) {
3210 trace_smb3_falloc_err(xid
, cfile
->fid
.persistent_fid
,
3211 tcon
->tid
, tcon
->ses
->Suid
, off
, len
, rc
);
3216 smb2_set_sparse(xid
, tcon
, cfile
, inode
, false);
3219 smb2_set_sparse(xid
, tcon
, cfile
, inode
, false);
3221 if (i_size_read(inode
) < off
+ len
) {
3222 eof
= cpu_to_le64(off
+ len
);
3223 rc
= SMB2_set_eof(xid
, tcon
, cfile
->fid
.persistent_fid
,
3224 cfile
->fid
.volatile_fid
, cfile
->pid
,
3230 trace_smb3_falloc_err(xid
, cfile
->fid
.persistent_fid
, tcon
->tid
,
3231 tcon
->ses
->Suid
, off
, len
, rc
);
3233 trace_smb3_falloc_done(xid
, cfile
->fid
.persistent_fid
, tcon
->tid
,
3234 tcon
->ses
->Suid
, off
, len
);
3240 static loff_t
smb3_llseek(struct file
*file
, struct cifs_tcon
*tcon
, loff_t offset
, int whence
)
3242 struct cifsFileInfo
*wrcfile
, *cfile
= file
->private_data
;
3243 struct cifsInodeInfo
*cifsi
;
3244 struct inode
*inode
;
3246 struct file_allocated_range_buffer in_data
, *out_data
= NULL
;
3250 if (whence
!= SEEK_HOLE
&& whence
!= SEEK_DATA
)
3251 return generic_file_llseek(file
, offset
, whence
);
3253 inode
= d_inode(cfile
->dentry
);
3254 cifsi
= CIFS_I(inode
);
3256 if (offset
< 0 || offset
>= i_size_read(inode
))
3261 * We need to be sure that all dirty pages are written as they
3262 * might fill holes on the server.
3263 * Note that we also MUST flush any written pages since at least
3264 * some servers (Windows2016) will not reflect recent writes in
3265 * QUERY_ALLOCATED_RANGES until SMB2_flush is called.
3267 wrcfile
= find_writable_file(cifsi
, false);
3269 filemap_write_and_wait(inode
->i_mapping
);
3270 smb2_flush_file(xid
, tcon
, &wrcfile
->fid
);
3271 cifsFileInfo_put(wrcfile
);
3274 if (!(cifsi
->cifsAttrs
& FILE_ATTRIBUTE_SPARSE_FILE
)) {
3275 if (whence
== SEEK_HOLE
)
3276 offset
= i_size_read(inode
);
3280 in_data
.file_offset
= cpu_to_le64(offset
);
3281 in_data
.length
= cpu_to_le64(i_size_read(inode
));
3283 rc
= SMB2_ioctl(xid
, tcon
, cfile
->fid
.persistent_fid
,
3284 cfile
->fid
.volatile_fid
,
3285 FSCTL_QUERY_ALLOCATED_RANGES
, true,
3286 (char *)&in_data
, sizeof(in_data
),
3287 sizeof(struct file_allocated_range_buffer
),
3288 (char **)&out_data
, &out_data_len
);
3294 if (whence
== SEEK_HOLE
&& out_data_len
== 0)
3297 if (whence
== SEEK_DATA
&& out_data_len
== 0) {
3302 if (out_data_len
< sizeof(struct file_allocated_range_buffer
)) {
3306 if (whence
== SEEK_DATA
) {
3307 offset
= le64_to_cpu(out_data
->file_offset
);
3310 if (offset
< le64_to_cpu(out_data
->file_offset
))
3313 offset
= le64_to_cpu(out_data
->file_offset
) + le64_to_cpu(out_data
->length
);
3319 return vfs_setpos(file
, offset
, inode
->i_sb
->s_maxbytes
);
3324 static int smb3_fiemap(struct cifs_tcon
*tcon
,
3325 struct cifsFileInfo
*cfile
,
3326 struct fiemap_extent_info
*fei
, u64 start
, u64 len
)
3329 struct file_allocated_range_buffer in_data
, *out_data
;
3331 int i
, num
, rc
, flags
, last_blob
;
3334 if (fiemap_check_flags(fei
, FIEMAP_FLAG_SYNC
))
3339 in_data
.file_offset
= cpu_to_le64(start
);
3340 in_data
.length
= cpu_to_le64(len
);
3342 rc
= SMB2_ioctl(xid
, tcon
, cfile
->fid
.persistent_fid
,
3343 cfile
->fid
.volatile_fid
,
3344 FSCTL_QUERY_ALLOCATED_RANGES
, true,
3345 (char *)&in_data
, sizeof(in_data
),
3346 1024 * sizeof(struct file_allocated_range_buffer
),
3347 (char **)&out_data
, &out_data_len
);
3356 if (out_data_len
< sizeof(struct file_allocated_range_buffer
)) {
3360 if (out_data_len
% sizeof(struct file_allocated_range_buffer
)) {
3365 num
= out_data_len
/ sizeof(struct file_allocated_range_buffer
);
3366 for (i
= 0; i
< num
; i
++) {
3368 if (i
== num
- 1 && last_blob
)
3369 flags
|= FIEMAP_EXTENT_LAST
;
3371 rc
= fiemap_fill_next_extent(fei
,
3372 le64_to_cpu(out_data
[i
].file_offset
),
3373 le64_to_cpu(out_data
[i
].file_offset
),
3374 le64_to_cpu(out_data
[i
].length
),
3385 next
= le64_to_cpu(out_data
[num
- 1].file_offset
) +
3386 le64_to_cpu(out_data
[num
- 1].length
);
3387 len
= len
- (next
- start
);
3398 static long smb3_fallocate(struct file
*file
, struct cifs_tcon
*tcon
, int mode
,
3399 loff_t off
, loff_t len
)
3401 /* KEEP_SIZE already checked for by do_fallocate */
3402 if (mode
& FALLOC_FL_PUNCH_HOLE
)
3403 return smb3_punch_hole(file
, tcon
, off
, len
);
3404 else if (mode
& FALLOC_FL_ZERO_RANGE
) {
3405 if (mode
& FALLOC_FL_KEEP_SIZE
)
3406 return smb3_zero_range(file
, tcon
, off
, len
, true);
3407 return smb3_zero_range(file
, tcon
, off
, len
, false);
3408 } else if (mode
== FALLOC_FL_KEEP_SIZE
)
3409 return smb3_simple_falloc(file
, tcon
, off
, len
, true);
3411 return smb3_simple_falloc(file
, tcon
, off
, len
, false);
3417 smb2_downgrade_oplock(struct TCP_Server_Info
*server
,
3418 struct cifsInodeInfo
*cinode
, __u32 oplock
,
3419 unsigned int epoch
, bool *purge_cache
)
3421 server
->ops
->set_oplock_level(cinode
, oplock
, 0, NULL
);
3425 smb21_set_oplock_level(struct cifsInodeInfo
*cinode
, __u32 oplock
,
3426 unsigned int epoch
, bool *purge_cache
);
3429 smb3_downgrade_oplock(struct TCP_Server_Info
*server
,
3430 struct cifsInodeInfo
*cinode
, __u32 oplock
,
3431 unsigned int epoch
, bool *purge_cache
)
3433 unsigned int old_state
= cinode
->oplock
;
3434 unsigned int old_epoch
= cinode
->epoch
;
3435 unsigned int new_state
;
3437 if (epoch
> old_epoch
) {
3438 smb21_set_oplock_level(cinode
, oplock
, 0, NULL
);
3439 cinode
->epoch
= epoch
;
3442 new_state
= cinode
->oplock
;
3443 *purge_cache
= false;
3445 if ((old_state
& CIFS_CACHE_READ_FLG
) != 0 &&
3446 (new_state
& CIFS_CACHE_READ_FLG
) == 0)
3447 *purge_cache
= true;
3448 else if (old_state
== new_state
&& (epoch
- old_epoch
> 1))
3449 *purge_cache
= true;
3453 smb2_set_oplock_level(struct cifsInodeInfo
*cinode
, __u32 oplock
,
3454 unsigned int epoch
, bool *purge_cache
)
3457 if (oplock
== SMB2_OPLOCK_LEVEL_NOCHANGE
)
3459 if (oplock
== SMB2_OPLOCK_LEVEL_BATCH
) {
3460 cinode
->oplock
= CIFS_CACHE_RHW_FLG
;
3461 cifs_dbg(FYI
, "Batch Oplock granted on inode %p\n",
3462 &cinode
->vfs_inode
);
3463 } else if (oplock
== SMB2_OPLOCK_LEVEL_EXCLUSIVE
) {
3464 cinode
->oplock
= CIFS_CACHE_RW_FLG
;
3465 cifs_dbg(FYI
, "Exclusive Oplock granted on inode %p\n",
3466 &cinode
->vfs_inode
);
3467 } else if (oplock
== SMB2_OPLOCK_LEVEL_II
) {
3468 cinode
->oplock
= CIFS_CACHE_READ_FLG
;
3469 cifs_dbg(FYI
, "Level II Oplock granted on inode %p\n",
3470 &cinode
->vfs_inode
);
3476 smb21_set_oplock_level(struct cifsInodeInfo
*cinode
, __u32 oplock
,
3477 unsigned int epoch
, bool *purge_cache
)
3479 char message
[5] = {0};
3480 unsigned int new_oplock
= 0;
3483 if (oplock
== SMB2_OPLOCK_LEVEL_NOCHANGE
)
3486 /* Check if the server granted an oplock rather than a lease */
3487 if (oplock
& SMB2_OPLOCK_LEVEL_EXCLUSIVE
)
3488 return smb2_set_oplock_level(cinode
, oplock
, epoch
,
3491 if (oplock
& SMB2_LEASE_READ_CACHING_HE
) {
3492 new_oplock
|= CIFS_CACHE_READ_FLG
;
3493 strcat(message
, "R");
3495 if (oplock
& SMB2_LEASE_HANDLE_CACHING_HE
) {
3496 new_oplock
|= CIFS_CACHE_HANDLE_FLG
;
3497 strcat(message
, "H");
3499 if (oplock
& SMB2_LEASE_WRITE_CACHING_HE
) {
3500 new_oplock
|= CIFS_CACHE_WRITE_FLG
;
3501 strcat(message
, "W");
3504 strncpy(message
, "None", sizeof(message
));
3506 cinode
->oplock
= new_oplock
;
3507 cifs_dbg(FYI
, "%s Lease granted on inode %p\n", message
,
3508 &cinode
->vfs_inode
);
3512 smb3_set_oplock_level(struct cifsInodeInfo
*cinode
, __u32 oplock
,
3513 unsigned int epoch
, bool *purge_cache
)
3515 unsigned int old_oplock
= cinode
->oplock
;
3517 smb21_set_oplock_level(cinode
, oplock
, epoch
, purge_cache
);
3520 *purge_cache
= false;
3521 if (old_oplock
== CIFS_CACHE_READ_FLG
) {
3522 if (cinode
->oplock
== CIFS_CACHE_READ_FLG
&&
3523 (epoch
- cinode
->epoch
> 0))
3524 *purge_cache
= true;
3525 else if (cinode
->oplock
== CIFS_CACHE_RH_FLG
&&
3526 (epoch
- cinode
->epoch
> 1))
3527 *purge_cache
= true;
3528 else if (cinode
->oplock
== CIFS_CACHE_RHW_FLG
&&
3529 (epoch
- cinode
->epoch
> 1))
3530 *purge_cache
= true;
3531 else if (cinode
->oplock
== 0 &&
3532 (epoch
- cinode
->epoch
> 0))
3533 *purge_cache
= true;
3534 } else if (old_oplock
== CIFS_CACHE_RH_FLG
) {
3535 if (cinode
->oplock
== CIFS_CACHE_RH_FLG
&&
3536 (epoch
- cinode
->epoch
> 0))
3537 *purge_cache
= true;
3538 else if (cinode
->oplock
== CIFS_CACHE_RHW_FLG
&&
3539 (epoch
- cinode
->epoch
> 1))
3540 *purge_cache
= true;
3542 cinode
->epoch
= epoch
;
3547 smb2_is_read_op(__u32 oplock
)
3549 return oplock
== SMB2_OPLOCK_LEVEL_II
;
3553 smb21_is_read_op(__u32 oplock
)
3555 return (oplock
& SMB2_LEASE_READ_CACHING_HE
) &&
3556 !(oplock
& SMB2_LEASE_WRITE_CACHING_HE
);
3560 map_oplock_to_lease(u8 oplock
)
3562 if (oplock
== SMB2_OPLOCK_LEVEL_EXCLUSIVE
)
3563 return SMB2_LEASE_WRITE_CACHING
| SMB2_LEASE_READ_CACHING
;
3564 else if (oplock
== SMB2_OPLOCK_LEVEL_II
)
3565 return SMB2_LEASE_READ_CACHING
;
3566 else if (oplock
== SMB2_OPLOCK_LEVEL_BATCH
)
3567 return SMB2_LEASE_HANDLE_CACHING
| SMB2_LEASE_READ_CACHING
|
3568 SMB2_LEASE_WRITE_CACHING
;
3573 smb2_create_lease_buf(u8
*lease_key
, u8 oplock
)
3575 struct create_lease
*buf
;
3577 buf
= kzalloc(sizeof(struct create_lease
), GFP_KERNEL
);
3581 memcpy(&buf
->lcontext
.LeaseKey
, lease_key
, SMB2_LEASE_KEY_SIZE
);
3582 buf
->lcontext
.LeaseState
= map_oplock_to_lease(oplock
);
3584 buf
->ccontext
.DataOffset
= cpu_to_le16(offsetof
3585 (struct create_lease
, lcontext
));
3586 buf
->ccontext
.DataLength
= cpu_to_le32(sizeof(struct lease_context
));
3587 buf
->ccontext
.NameOffset
= cpu_to_le16(offsetof
3588 (struct create_lease
, Name
));
3589 buf
->ccontext
.NameLength
= cpu_to_le16(4);
3590 /* SMB2_CREATE_REQUEST_LEASE is "RqLs" */
3599 smb3_create_lease_buf(u8
*lease_key
, u8 oplock
)
3601 struct create_lease_v2
*buf
;
3603 buf
= kzalloc(sizeof(struct create_lease_v2
), GFP_KERNEL
);
3607 memcpy(&buf
->lcontext
.LeaseKey
, lease_key
, SMB2_LEASE_KEY_SIZE
);
3608 buf
->lcontext
.LeaseState
= map_oplock_to_lease(oplock
);
3610 buf
->ccontext
.DataOffset
= cpu_to_le16(offsetof
3611 (struct create_lease_v2
, lcontext
));
3612 buf
->ccontext
.DataLength
= cpu_to_le32(sizeof(struct lease_context_v2
));
3613 buf
->ccontext
.NameOffset
= cpu_to_le16(offsetof
3614 (struct create_lease_v2
, Name
));
3615 buf
->ccontext
.NameLength
= cpu_to_le16(4);
3616 /* SMB2_CREATE_REQUEST_LEASE is "RqLs" */
3625 smb2_parse_lease_buf(void *buf
, unsigned int *epoch
, char *lease_key
)
3627 struct create_lease
*lc
= (struct create_lease
*)buf
;
3629 *epoch
= 0; /* not used */
3630 if (lc
->lcontext
.LeaseFlags
& SMB2_LEASE_FLAG_BREAK_IN_PROGRESS
)
3631 return SMB2_OPLOCK_LEVEL_NOCHANGE
;
3632 return le32_to_cpu(lc
->lcontext
.LeaseState
);
3636 smb3_parse_lease_buf(void *buf
, unsigned int *epoch
, char *lease_key
)
3638 struct create_lease_v2
*lc
= (struct create_lease_v2
*)buf
;
3640 *epoch
= le16_to_cpu(lc
->lcontext
.Epoch
);
3641 if (lc
->lcontext
.LeaseFlags
& SMB2_LEASE_FLAG_BREAK_IN_PROGRESS
)
3642 return SMB2_OPLOCK_LEVEL_NOCHANGE
;
3644 memcpy(lease_key
, &lc
->lcontext
.LeaseKey
, SMB2_LEASE_KEY_SIZE
);
3645 return le32_to_cpu(lc
->lcontext
.LeaseState
);
3649 smb2_wp_retry_size(struct inode
*inode
)
3651 return min_t(unsigned int, CIFS_SB(inode
->i_sb
)->wsize
,
3652 SMB2_MAX_BUFFER_SIZE
);
3656 smb2_dir_needs_close(struct cifsFileInfo
*cfile
)
3658 return !cfile
->invalidHandle
;
3662 fill_transform_hdr(struct smb2_transform_hdr
*tr_hdr
, unsigned int orig_len
,
3663 struct smb_rqst
*old_rq
, __le16 cipher_type
)
3665 struct smb2_sync_hdr
*shdr
=
3666 (struct smb2_sync_hdr
*)old_rq
->rq_iov
[0].iov_base
;
3668 memset(tr_hdr
, 0, sizeof(struct smb2_transform_hdr
));
3669 tr_hdr
->ProtocolId
= SMB2_TRANSFORM_PROTO_NUM
;
3670 tr_hdr
->OriginalMessageSize
= cpu_to_le32(orig_len
);
3671 tr_hdr
->Flags
= cpu_to_le16(0x01);
3672 if (cipher_type
== SMB2_ENCRYPTION_AES128_GCM
)
3673 get_random_bytes(&tr_hdr
->Nonce
, SMB3_AES128GCM_NONCE
);
3675 get_random_bytes(&tr_hdr
->Nonce
, SMB3_AES128CCM_NONCE
);
3676 memcpy(&tr_hdr
->SessionId
, &shdr
->SessionId
, 8);
3679 /* We can not use the normal sg_set_buf() as we will sometimes pass a
3680 * stack object as buf.
3682 static inline void smb2_sg_set_buf(struct scatterlist
*sg
, const void *buf
,
3683 unsigned int buflen
)
3687 * VMAP_STACK (at least) puts stack into the vmalloc address space
3689 if (is_vmalloc_addr(buf
))
3690 addr
= vmalloc_to_page(buf
);
3692 addr
= virt_to_page(buf
);
3693 sg_set_page(sg
, addr
, buflen
, offset_in_page(buf
));
3696 /* Assumes the first rqst has a transform header as the first iov.
3698 * rqst[0].rq_iov[0] is transform header
3699 * rqst[0].rq_iov[1+] data to be encrypted/decrypted
3700 * rqst[1+].rq_iov[0+] data to be encrypted/decrypted
3702 static struct scatterlist
*
3703 init_sg(int num_rqst
, struct smb_rqst
*rqst
, u8
*sign
)
3705 unsigned int sg_len
;
3706 struct scatterlist
*sg
;
3709 unsigned int idx
= 0;
3713 for (i
= 0; i
< num_rqst
; i
++)
3714 sg_len
+= rqst
[i
].rq_nvec
+ rqst
[i
].rq_npages
;
3716 sg
= kmalloc_array(sg_len
, sizeof(struct scatterlist
), GFP_KERNEL
);
3720 sg_init_table(sg
, sg_len
);
3721 for (i
= 0; i
< num_rqst
; i
++) {
3722 for (j
= 0; j
< rqst
[i
].rq_nvec
; j
++) {
3724 * The first rqst has a transform header where the
3725 * first 20 bytes are not part of the encrypted blob
3727 skip
= (i
== 0) && (j
== 0) ? 20 : 0;
3728 smb2_sg_set_buf(&sg
[idx
++],
3729 rqst
[i
].rq_iov
[j
].iov_base
+ skip
,
3730 rqst
[i
].rq_iov
[j
].iov_len
- skip
);
3733 for (j
= 0; j
< rqst
[i
].rq_npages
; j
++) {
3734 unsigned int len
, offset
;
3736 rqst_page_get_length(&rqst
[i
], j
, &len
, &offset
);
3737 sg_set_page(&sg
[idx
++], rqst
[i
].rq_pages
[j
], len
, offset
);
3740 smb2_sg_set_buf(&sg
[idx
], sign
, SMB2_SIGNATURE_SIZE
);
3745 smb2_get_enc_key(struct TCP_Server_Info
*server
, __u64 ses_id
, int enc
, u8
*key
)
3747 struct cifs_ses
*ses
;
3750 spin_lock(&cifs_tcp_ses_lock
);
3751 list_for_each_entry(server
, &cifs_tcp_ses_list
, tcp_ses_list
) {
3752 list_for_each_entry(ses
, &server
->smb_ses_list
, smb_ses_list
) {
3753 if (ses
->Suid
== ses_id
) {
3754 ses_enc_key
= enc
? ses
->smb3encryptionkey
:
3755 ses
->smb3decryptionkey
;
3756 memcpy(key
, ses_enc_key
, SMB3_SIGN_KEY_SIZE
);
3757 spin_unlock(&cifs_tcp_ses_lock
);
3762 spin_unlock(&cifs_tcp_ses_lock
);
3767 * Encrypt or decrypt @rqst message. @rqst[0] has the following format:
3768 * iov[0] - transform header (associate data),
3769 * iov[1-N] - SMB2 header and pages - data to encrypt.
3770 * On success return encrypted data in iov[1-N] and pages, leave iov[0]
3774 crypt_message(struct TCP_Server_Info
*server
, int num_rqst
,
3775 struct smb_rqst
*rqst
, int enc
)
3777 struct smb2_transform_hdr
*tr_hdr
=
3778 (struct smb2_transform_hdr
*)rqst
[0].rq_iov
[0].iov_base
;
3779 unsigned int assoc_data_len
= sizeof(struct smb2_transform_hdr
) - 20;
3781 struct scatterlist
*sg
;
3782 u8 sign
[SMB2_SIGNATURE_SIZE
] = {};
3783 u8 key
[SMB3_SIGN_KEY_SIZE
];
3784 struct aead_request
*req
;
3786 unsigned int iv_len
;
3787 DECLARE_CRYPTO_WAIT(wait
);
3788 struct crypto_aead
*tfm
;
3789 unsigned int crypt_len
= le32_to_cpu(tr_hdr
->OriginalMessageSize
);
3791 rc
= smb2_get_enc_key(server
, tr_hdr
->SessionId
, enc
, key
);
3793 cifs_server_dbg(VFS
, "%s: Could not get %scryption key\n", __func__
,
3798 rc
= smb3_crypto_aead_allocate(server
);
3800 cifs_server_dbg(VFS
, "%s: crypto alloc failed\n", __func__
);
3804 tfm
= enc
? server
->secmech
.ccmaesencrypt
:
3805 server
->secmech
.ccmaesdecrypt
;
3806 rc
= crypto_aead_setkey(tfm
, key
, SMB3_SIGN_KEY_SIZE
);
3808 cifs_server_dbg(VFS
, "%s: Failed to set aead key %d\n", __func__
, rc
);
3812 rc
= crypto_aead_setauthsize(tfm
, SMB2_SIGNATURE_SIZE
);
3814 cifs_server_dbg(VFS
, "%s: Failed to set authsize %d\n", __func__
, rc
);
3818 req
= aead_request_alloc(tfm
, GFP_KERNEL
);
3820 cifs_server_dbg(VFS
, "%s: Failed to alloc aead request\n", __func__
);
3825 memcpy(sign
, &tr_hdr
->Signature
, SMB2_SIGNATURE_SIZE
);
3826 crypt_len
+= SMB2_SIGNATURE_SIZE
;
3829 sg
= init_sg(num_rqst
, rqst
, sign
);
3831 cifs_server_dbg(VFS
, "%s: Failed to init sg\n", __func__
);
3836 iv_len
= crypto_aead_ivsize(tfm
);
3837 iv
= kzalloc(iv_len
, GFP_KERNEL
);
3839 cifs_server_dbg(VFS
, "%s: Failed to alloc iv\n", __func__
);
3844 if (server
->cipher_type
== SMB2_ENCRYPTION_AES128_GCM
)
3845 memcpy(iv
, (char *)tr_hdr
->Nonce
, SMB3_AES128GCM_NONCE
);
3848 memcpy(iv
+ 1, (char *)tr_hdr
->Nonce
, SMB3_AES128CCM_NONCE
);
3851 aead_request_set_crypt(req
, sg
, sg
, crypt_len
, iv
);
3852 aead_request_set_ad(req
, assoc_data_len
);
3854 aead_request_set_callback(req
, CRYPTO_TFM_REQ_MAY_BACKLOG
,
3855 crypto_req_done
, &wait
);
3857 rc
= crypto_wait_req(enc
? crypto_aead_encrypt(req
)
3858 : crypto_aead_decrypt(req
), &wait
);
3861 memcpy(&tr_hdr
->Signature
, sign
, SMB2_SIGNATURE_SIZE
);
3872 smb3_free_compound_rqst(int num_rqst
, struct smb_rqst
*rqst
)
3876 for (i
= 0; i
< num_rqst
; i
++) {
3877 if (rqst
[i
].rq_pages
) {
3878 for (j
= rqst
[i
].rq_npages
- 1; j
>= 0; j
--)
3879 put_page(rqst
[i
].rq_pages
[j
]);
3880 kfree(rqst
[i
].rq_pages
);
3886 * This function will initialize new_rq and encrypt the content.
3887 * The first entry, new_rq[0], only contains a single iov which contains
3888 * a smb2_transform_hdr and is pre-allocated by the caller.
3889 * This function then populates new_rq[1+] with the content from olq_rq[0+].
3891 * The end result is an array of smb_rqst structures where the first structure
3892 * only contains a single iov for the transform header which we then can pass
3893 * to crypt_message().
3895 * new_rq[0].rq_iov[0] : smb2_transform_hdr pre-allocated by the caller
3896 * new_rq[1+].rq_iov[*] == old_rq[0+].rq_iov[*] : SMB2/3 requests
3899 smb3_init_transform_rq(struct TCP_Server_Info
*server
, int num_rqst
,
3900 struct smb_rqst
*new_rq
, struct smb_rqst
*old_rq
)
3902 struct page
**pages
;
3903 struct smb2_transform_hdr
*tr_hdr
= new_rq
[0].rq_iov
[0].iov_base
;
3904 unsigned int npages
;
3905 unsigned int orig_len
= 0;
3909 for (i
= 1; i
< num_rqst
; i
++) {
3910 npages
= old_rq
[i
- 1].rq_npages
;
3911 pages
= kmalloc_array(npages
, sizeof(struct page
*),
3916 new_rq
[i
].rq_pages
= pages
;
3917 new_rq
[i
].rq_npages
= npages
;
3918 new_rq
[i
].rq_offset
= old_rq
[i
- 1].rq_offset
;
3919 new_rq
[i
].rq_pagesz
= old_rq
[i
- 1].rq_pagesz
;
3920 new_rq
[i
].rq_tailsz
= old_rq
[i
- 1].rq_tailsz
;
3921 new_rq
[i
].rq_iov
= old_rq
[i
- 1].rq_iov
;
3922 new_rq
[i
].rq_nvec
= old_rq
[i
- 1].rq_nvec
;
3924 orig_len
+= smb_rqst_len(server
, &old_rq
[i
- 1]);
3926 for (j
= 0; j
< npages
; j
++) {
3927 pages
[j
] = alloc_page(GFP_KERNEL
|__GFP_HIGHMEM
);
3932 /* copy pages form the old */
3933 for (j
= 0; j
< npages
; j
++) {
3935 unsigned int offset
, len
;
3937 rqst_page_get_length(&new_rq
[i
], j
, &len
, &offset
);
3939 dst
= (char *) kmap(new_rq
[i
].rq_pages
[j
]) + offset
;
3940 src
= (char *) kmap(old_rq
[i
- 1].rq_pages
[j
]) + offset
;
3942 memcpy(dst
, src
, len
);
3943 kunmap(new_rq
[i
].rq_pages
[j
]);
3944 kunmap(old_rq
[i
- 1].rq_pages
[j
]);
3948 /* fill the 1st iov with a transform header */
3949 fill_transform_hdr(tr_hdr
, orig_len
, old_rq
, server
->cipher_type
);
3951 rc
= crypt_message(server
, num_rqst
, new_rq
, 1);
3952 cifs_dbg(FYI
, "Encrypt message returned %d\n", rc
);
3959 smb3_free_compound_rqst(num_rqst
- 1, &new_rq
[1]);
3964 smb3_is_transform_hdr(void *buf
)
3966 struct smb2_transform_hdr
*trhdr
= buf
;
3968 return trhdr
->ProtocolId
== SMB2_TRANSFORM_PROTO_NUM
;
3972 decrypt_raw_data(struct TCP_Server_Info
*server
, char *buf
,
3973 unsigned int buf_data_size
, struct page
**pages
,
3974 unsigned int npages
, unsigned int page_data_size
)
3977 struct smb_rqst rqst
= {NULL
};
3980 iov
[0].iov_base
= buf
;
3981 iov
[0].iov_len
= sizeof(struct smb2_transform_hdr
);
3982 iov
[1].iov_base
= buf
+ sizeof(struct smb2_transform_hdr
);
3983 iov
[1].iov_len
= buf_data_size
;
3987 rqst
.rq_pages
= pages
;
3988 rqst
.rq_npages
= npages
;
3989 rqst
.rq_pagesz
= PAGE_SIZE
;
3990 rqst
.rq_tailsz
= (page_data_size
% PAGE_SIZE
) ? : PAGE_SIZE
;
3992 rc
= crypt_message(server
, 1, &rqst
, 0);
3993 cifs_dbg(FYI
, "Decrypt message returned %d\n", rc
);
3998 memmove(buf
, iov
[1].iov_base
, buf_data_size
);
4000 server
->total_read
= buf_data_size
+ page_data_size
;
4006 read_data_into_pages(struct TCP_Server_Info
*server
, struct page
**pages
,
4007 unsigned int npages
, unsigned int len
)
4012 for (i
= 0; i
< npages
; i
++) {
4013 struct page
*page
= pages
[i
];
4017 if (len
>= PAGE_SIZE
) {
4018 /* enough data to fill the page */
4022 zero_user(page
, len
, PAGE_SIZE
- len
);
4025 length
= cifs_read_page_from_socket(server
, page
, 0, n
);
4028 server
->total_read
+= length
;
4035 init_read_bvec(struct page
**pages
, unsigned int npages
, unsigned int data_size
,
4036 unsigned int cur_off
, struct bio_vec
**page_vec
)
4038 struct bio_vec
*bvec
;
4041 bvec
= kcalloc(npages
, sizeof(struct bio_vec
), GFP_KERNEL
);
4045 for (i
= 0; i
< npages
; i
++) {
4046 bvec
[i
].bv_page
= pages
[i
];
4047 bvec
[i
].bv_offset
= (i
== 0) ? cur_off
: 0;
4048 bvec
[i
].bv_len
= min_t(unsigned int, PAGE_SIZE
, data_size
);
4049 data_size
-= bvec
[i
].bv_len
;
4052 if (data_size
!= 0) {
4053 cifs_dbg(VFS
, "%s: something went wrong\n", __func__
);
4063 handle_read_data(struct TCP_Server_Info
*server
, struct mid_q_entry
*mid
,
4064 char *buf
, unsigned int buf_len
, struct page
**pages
,
4065 unsigned int npages
, unsigned int page_data_size
)
4067 unsigned int data_offset
;
4068 unsigned int data_len
;
4069 unsigned int cur_off
;
4070 unsigned int cur_page_idx
;
4071 unsigned int pad_len
;
4072 struct cifs_readdata
*rdata
= mid
->callback_data
;
4073 struct smb2_sync_hdr
*shdr
= (struct smb2_sync_hdr
*)buf
;
4074 struct bio_vec
*bvec
= NULL
;
4075 struct iov_iter iter
;
4078 bool use_rdma_mr
= false;
4080 if (shdr
->Command
!= SMB2_READ
) {
4081 cifs_server_dbg(VFS
, "only big read responses are supported\n");
4085 if (server
->ops
->is_session_expired
&&
4086 server
->ops
->is_session_expired(buf
)) {
4087 cifs_reconnect(server
);
4088 wake_up(&server
->response_q
);
4092 if (server
->ops
->is_status_pending
&&
4093 server
->ops
->is_status_pending(buf
, server
))
4096 /* set up first two iov to get credits */
4097 rdata
->iov
[0].iov_base
= buf
;
4098 rdata
->iov
[0].iov_len
= 0;
4099 rdata
->iov
[1].iov_base
= buf
;
4100 rdata
->iov
[1].iov_len
=
4101 min_t(unsigned int, buf_len
, server
->vals
->read_rsp_size
);
4102 cifs_dbg(FYI
, "0: iov_base=%p iov_len=%zu\n",
4103 rdata
->iov
[0].iov_base
, rdata
->iov
[0].iov_len
);
4104 cifs_dbg(FYI
, "1: iov_base=%p iov_len=%zu\n",
4105 rdata
->iov
[1].iov_base
, rdata
->iov
[1].iov_len
);
4107 rdata
->result
= server
->ops
->map_error(buf
, true);
4108 if (rdata
->result
!= 0) {
4109 cifs_dbg(FYI
, "%s: server returned error %d\n",
4110 __func__
, rdata
->result
);
4111 /* normal error on read response */
4112 dequeue_mid(mid
, false);
4116 data_offset
= server
->ops
->read_data_offset(buf
);
4117 #ifdef CONFIG_CIFS_SMB_DIRECT
4118 use_rdma_mr
= rdata
->mr
;
4120 data_len
= server
->ops
->read_data_length(buf
, use_rdma_mr
);
4122 if (data_offset
< server
->vals
->read_rsp_size
) {
4124 * win2k8 sometimes sends an offset of 0 when the read
4125 * is beyond the EOF. Treat it as if the data starts just after
4128 cifs_dbg(FYI
, "%s: data offset (%u) inside read response header\n",
4129 __func__
, data_offset
);
4130 data_offset
= server
->vals
->read_rsp_size
;
4131 } else if (data_offset
> MAX_CIFS_SMALL_BUFFER_SIZE
) {
4132 /* data_offset is beyond the end of smallbuf */
4133 cifs_dbg(FYI
, "%s: data offset (%u) beyond end of smallbuf\n",
4134 __func__
, data_offset
);
4135 rdata
->result
= -EIO
;
4136 dequeue_mid(mid
, rdata
->result
);
4140 pad_len
= data_offset
- server
->vals
->read_rsp_size
;
4142 if (buf_len
<= data_offset
) {
4143 /* read response payload is in pages */
4144 cur_page_idx
= pad_len
/ PAGE_SIZE
;
4145 cur_off
= pad_len
% PAGE_SIZE
;
4147 if (cur_page_idx
!= 0) {
4148 /* data offset is beyond the 1st page of response */
4149 cifs_dbg(FYI
, "%s: data offset (%u) beyond 1st page of response\n",
4150 __func__
, data_offset
);
4151 rdata
->result
= -EIO
;
4152 dequeue_mid(mid
, rdata
->result
);
4156 if (data_len
> page_data_size
- pad_len
) {
4157 /* data_len is corrupt -- discard frame */
4158 rdata
->result
= -EIO
;
4159 dequeue_mid(mid
, rdata
->result
);
4163 rdata
->result
= init_read_bvec(pages
, npages
, page_data_size
,
4165 if (rdata
->result
!= 0) {
4166 dequeue_mid(mid
, rdata
->result
);
4170 iov_iter_bvec(&iter
, WRITE
, bvec
, npages
, data_len
);
4171 } else if (buf_len
>= data_offset
+ data_len
) {
4172 /* read response payload is in buf */
4173 WARN_ONCE(npages
> 0, "read data can be either in buf or in pages");
4174 iov
.iov_base
= buf
+ data_offset
;
4175 iov
.iov_len
= data_len
;
4176 iov_iter_kvec(&iter
, WRITE
, &iov
, 1, data_len
);
4178 /* read response payload cannot be in both buf and pages */
4179 WARN_ONCE(1, "buf can not contain only a part of read data");
4180 rdata
->result
= -EIO
;
4181 dequeue_mid(mid
, rdata
->result
);
4185 length
= rdata
->copy_into_pages(server
, rdata
, &iter
);
4192 dequeue_mid(mid
, false);
4196 struct smb2_decrypt_work
{
4197 struct work_struct decrypt
;
4198 struct TCP_Server_Info
*server
;
4199 struct page
**ppages
;
4201 unsigned int npages
;
4206 static void smb2_decrypt_offload(struct work_struct
*work
)
4208 struct smb2_decrypt_work
*dw
= container_of(work
,
4209 struct smb2_decrypt_work
, decrypt
);
4211 struct mid_q_entry
*mid
;
4213 rc
= decrypt_raw_data(dw
->server
, dw
->buf
, dw
->server
->vals
->read_rsp_size
,
4214 dw
->ppages
, dw
->npages
, dw
->len
);
4216 cifs_dbg(VFS
, "error decrypting rc=%d\n", rc
);
4220 dw
->server
->lstrp
= jiffies
;
4221 mid
= smb2_find_mid(dw
->server
, dw
->buf
);
4223 cifs_dbg(FYI
, "mid not found\n");
4225 mid
->decrypted
= true;
4226 rc
= handle_read_data(dw
->server
, mid
, dw
->buf
,
4227 dw
->server
->vals
->read_rsp_size
,
4228 dw
->ppages
, dw
->npages
, dw
->len
);
4230 cifs_mid_q_entry_release(mid
);
4234 for (i
= dw
->npages
-1; i
>= 0; i
--)
4235 put_page(dw
->ppages
[i
]);
4238 cifs_small_buf_release(dw
->buf
);
4244 receive_encrypted_read(struct TCP_Server_Info
*server
, struct mid_q_entry
**mid
,
4247 char *buf
= server
->smallbuf
;
4248 struct smb2_transform_hdr
*tr_hdr
= (struct smb2_transform_hdr
*)buf
;
4249 unsigned int npages
;
4250 struct page
**pages
;
4252 unsigned int buflen
= server
->pdu_size
;
4255 struct smb2_decrypt_work
*dw
;
4258 len
= min_t(unsigned int, buflen
, server
->vals
->read_rsp_size
+
4259 sizeof(struct smb2_transform_hdr
)) - HEADER_SIZE(server
) + 1;
4261 rc
= cifs_read_from_socket(server
, buf
+ HEADER_SIZE(server
) - 1, len
);
4264 server
->total_read
+= rc
;
4266 len
= le32_to_cpu(tr_hdr
->OriginalMessageSize
) -
4267 server
->vals
->read_rsp_size
;
4268 npages
= DIV_ROUND_UP(len
, PAGE_SIZE
);
4270 pages
= kmalloc_array(npages
, sizeof(struct page
*), GFP_KERNEL
);
4276 for (; i
< npages
; i
++) {
4277 pages
[i
] = alloc_page(GFP_KERNEL
|__GFP_HIGHMEM
);
4284 /* read read data into pages */
4285 rc
= read_data_into_pages(server
, pages
, npages
, len
);
4289 rc
= cifs_discard_remaining_data(server
);
4294 * For large reads, offload to different thread for better performance,
4295 * use more cores decrypting which can be expensive
4298 if ((server
->min_offload
) && (server
->in_flight
> 1) &&
4299 (server
->pdu_size
>= server
->min_offload
)) {
4300 dw
= kmalloc(sizeof(struct smb2_decrypt_work
), GFP_KERNEL
);
4302 goto non_offloaded_decrypt
;
4304 dw
->buf
= server
->smallbuf
;
4305 server
->smallbuf
= (char *)cifs_small_buf_get();
4307 INIT_WORK(&dw
->decrypt
, smb2_decrypt_offload
);
4309 dw
->npages
= npages
;
4310 dw
->server
= server
;
4313 queue_work(decrypt_wq
, &dw
->decrypt
);
4314 *num_mids
= 0; /* worker thread takes care of finding mid */
4318 non_offloaded_decrypt
:
4319 rc
= decrypt_raw_data(server
, buf
, server
->vals
->read_rsp_size
,
4320 pages
, npages
, len
);
4324 *mid
= smb2_find_mid(server
, buf
);
4326 cifs_dbg(FYI
, "mid not found\n");
4328 cifs_dbg(FYI
, "mid found\n");
4329 (*mid
)->decrypted
= true;
4330 rc
= handle_read_data(server
, *mid
, buf
,
4331 server
->vals
->read_rsp_size
,
4332 pages
, npages
, len
);
4336 for (i
= i
- 1; i
>= 0; i
--)
4341 cifs_discard_remaining_data(server
);
4346 receive_encrypted_standard(struct TCP_Server_Info
*server
,
4347 struct mid_q_entry
**mids
, char **bufs
,
4351 char *buf
= server
->smallbuf
;
4352 struct smb2_sync_hdr
*shdr
;
4353 unsigned int pdu_length
= server
->pdu_size
;
4354 unsigned int buf_size
;
4355 struct mid_q_entry
*mid_entry
;
4357 char *next_buffer
= NULL
;
4361 /* switch to large buffer if too big for a small one */
4362 if (pdu_length
> MAX_CIFS_SMALL_BUFFER_SIZE
) {
4363 server
->large_buf
= true;
4364 memcpy(server
->bigbuf
, buf
, server
->total_read
);
4365 buf
= server
->bigbuf
;
4368 /* now read the rest */
4369 length
= cifs_read_from_socket(server
, buf
+ HEADER_SIZE(server
) - 1,
4370 pdu_length
- HEADER_SIZE(server
) + 1);
4373 server
->total_read
+= length
;
4375 buf_size
= pdu_length
- sizeof(struct smb2_transform_hdr
);
4376 length
= decrypt_raw_data(server
, buf
, buf_size
, NULL
, 0, 0);
4380 next_is_large
= server
->large_buf
;
4382 shdr
= (struct smb2_sync_hdr
*)buf
;
4383 if (shdr
->NextCommand
) {
4385 next_buffer
= (char *)cifs_buf_get();
4387 next_buffer
= (char *)cifs_small_buf_get();
4389 buf
+ le32_to_cpu(shdr
->NextCommand
),
4390 pdu_length
- le32_to_cpu(shdr
->NextCommand
));
4393 mid_entry
= smb2_find_mid(server
, buf
);
4394 if (mid_entry
== NULL
)
4395 cifs_dbg(FYI
, "mid not found\n");
4397 cifs_dbg(FYI
, "mid found\n");
4398 mid_entry
->decrypted
= true;
4399 mid_entry
->resp_buf_size
= server
->pdu_size
;
4402 if (*num_mids
>= MAX_COMPOUND
) {
4403 cifs_server_dbg(VFS
, "too many PDUs in compound\n");
4406 bufs
[*num_mids
] = buf
;
4407 mids
[(*num_mids
)++] = mid_entry
;
4409 if (mid_entry
&& mid_entry
->handle
)
4410 ret
= mid_entry
->handle(server
, mid_entry
);
4412 ret
= cifs_handle_standard(server
, mid_entry
);
4414 if (ret
== 0 && shdr
->NextCommand
) {
4415 pdu_length
-= le32_to_cpu(shdr
->NextCommand
);
4416 server
->large_buf
= next_is_large
;
4418 server
->bigbuf
= buf
= next_buffer
;
4420 server
->smallbuf
= buf
= next_buffer
;
4422 } else if (ret
!= 0) {
4424 * ret != 0 here means that we didn't get to handle_mid() thus
4425 * server->smallbuf and server->bigbuf are still valid. We need
4426 * to free next_buffer because it is not going to be used
4430 free_rsp_buf(CIFS_LARGE_BUFFER
, next_buffer
);
4432 free_rsp_buf(CIFS_SMALL_BUFFER
, next_buffer
);
4439 smb3_receive_transform(struct TCP_Server_Info
*server
,
4440 struct mid_q_entry
**mids
, char **bufs
, int *num_mids
)
4442 char *buf
= server
->smallbuf
;
4443 unsigned int pdu_length
= server
->pdu_size
;
4444 struct smb2_transform_hdr
*tr_hdr
= (struct smb2_transform_hdr
*)buf
;
4445 unsigned int orig_len
= le32_to_cpu(tr_hdr
->OriginalMessageSize
);
4447 if (pdu_length
< sizeof(struct smb2_transform_hdr
) +
4448 sizeof(struct smb2_sync_hdr
)) {
4449 cifs_server_dbg(VFS
, "Transform message is too small (%u)\n",
4451 cifs_reconnect(server
);
4452 wake_up(&server
->response_q
);
4453 return -ECONNABORTED
;
4456 if (pdu_length
< orig_len
+ sizeof(struct smb2_transform_hdr
)) {
4457 cifs_server_dbg(VFS
, "Transform message is broken\n");
4458 cifs_reconnect(server
);
4459 wake_up(&server
->response_q
);
4460 return -ECONNABORTED
;
4463 /* TODO: add support for compounds containing READ. */
4464 if (pdu_length
> CIFSMaxBufSize
+ MAX_HEADER_SIZE(server
)) {
4465 return receive_encrypted_read(server
, &mids
[0], num_mids
);
4468 return receive_encrypted_standard(server
, mids
, bufs
, num_mids
);
4472 smb3_handle_read_data(struct TCP_Server_Info
*server
, struct mid_q_entry
*mid
)
4474 char *buf
= server
->large_buf
? server
->bigbuf
: server
->smallbuf
;
4476 return handle_read_data(server
, mid
, buf
, server
->pdu_size
,
4481 smb2_next_header(char *buf
)
4483 struct smb2_sync_hdr
*hdr
= (struct smb2_sync_hdr
*)buf
;
4484 struct smb2_transform_hdr
*t_hdr
= (struct smb2_transform_hdr
*)buf
;
4486 if (hdr
->ProtocolId
== SMB2_TRANSFORM_PROTO_NUM
)
4487 return sizeof(struct smb2_transform_hdr
) +
4488 le32_to_cpu(t_hdr
->OriginalMessageSize
);
4490 return le32_to_cpu(hdr
->NextCommand
);
4494 smb2_make_node(unsigned int xid
, struct inode
*inode
,
4495 struct dentry
*dentry
, struct cifs_tcon
*tcon
,
4496 char *full_path
, umode_t mode
, dev_t dev
)
4498 struct cifs_sb_info
*cifs_sb
= CIFS_SB(inode
->i_sb
);
4500 int create_options
= CREATE_NOT_DIR
| CREATE_OPTION_SPECIAL
;
4501 FILE_ALL_INFO
*buf
= NULL
;
4502 struct cifs_io_parms io_parms
;
4504 struct cifs_fid fid
;
4505 struct cifs_open_parms oparms
;
4506 unsigned int bytes_written
;
4507 struct win_dev
*pdev
;
4511 * Check if mounted with mount parm 'sfu' mount parm.
4512 * SFU emulation should work with all servers, but only
4513 * supports block and char device (no socket & fifo),
4514 * and was used by default in earlier versions of Windows
4516 if (!(cifs_sb
->mnt_cifs_flags
& CIFS_MOUNT_UNX_EMUL
))
4520 * TODO: Add ability to create instead via reparse point. Windows (e.g.
4521 * their current NFS server) uses this approach to expose special files
4522 * over SMB2/SMB3 and Samba will do this with SMB3.1.1 POSIX Extensions
4525 if (!S_ISCHR(mode
) && !S_ISBLK(mode
))
4528 cifs_dbg(FYI
, "sfu compat create special file\n");
4530 buf
= kmalloc(sizeof(FILE_ALL_INFO
), GFP_KERNEL
);
4536 if (backup_cred(cifs_sb
))
4537 create_options
|= CREATE_OPEN_BACKUP_INTENT
;
4540 oparms
.cifs_sb
= cifs_sb
;
4541 oparms
.desired_access
= GENERIC_WRITE
;
4542 oparms
.create_options
= create_options
;
4543 oparms
.disposition
= FILE_CREATE
;
4544 oparms
.path
= full_path
;
4546 oparms
.reconnect
= false;
4548 if (tcon
->ses
->server
->oplocks
)
4549 oplock
= REQ_OPLOCK
;
4552 rc
= tcon
->ses
->server
->ops
->open(xid
, &oparms
, &oplock
, buf
);
4557 * BB Do not bother to decode buf since no local inode yet to put
4558 * timestamps in, but we can reuse it safely.
4561 pdev
= (struct win_dev
*)buf
;
4562 io_parms
.pid
= current
->tgid
;
4563 io_parms
.tcon
= tcon
;
4564 io_parms
.offset
= 0;
4565 io_parms
.length
= sizeof(struct win_dev
);
4566 iov
[1].iov_base
= buf
;
4567 iov
[1].iov_len
= sizeof(struct win_dev
);
4568 if (S_ISCHR(mode
)) {
4569 memcpy(pdev
->type
, "IntxCHR", 8);
4570 pdev
->major
= cpu_to_le64(MAJOR(dev
));
4571 pdev
->minor
= cpu_to_le64(MINOR(dev
));
4572 rc
= tcon
->ses
->server
->ops
->sync_write(xid
, &fid
, &io_parms
,
4573 &bytes_written
, iov
, 1);
4574 } else if (S_ISBLK(mode
)) {
4575 memcpy(pdev
->type
, "IntxBLK", 8);
4576 pdev
->major
= cpu_to_le64(MAJOR(dev
));
4577 pdev
->minor
= cpu_to_le64(MINOR(dev
));
4578 rc
= tcon
->ses
->server
->ops
->sync_write(xid
, &fid
, &io_parms
,
4579 &bytes_written
, iov
, 1);
4581 tcon
->ses
->server
->ops
->close(xid
, tcon
, &fid
);
4584 /* FIXME: add code here to set EAs */
4591 struct smb_version_operations smb20_operations
= {
4592 .compare_fids
= smb2_compare_fids
,
4593 .setup_request
= smb2_setup_request
,
4594 .setup_async_request
= smb2_setup_async_request
,
4595 .check_receive
= smb2_check_receive
,
4596 .add_credits
= smb2_add_credits
,
4597 .set_credits
= smb2_set_credits
,
4598 .get_credits_field
= smb2_get_credits_field
,
4599 .get_credits
= smb2_get_credits
,
4600 .wait_mtu_credits
= cifs_wait_mtu_credits
,
4601 .get_next_mid
= smb2_get_next_mid
,
4602 .revert_current_mid
= smb2_revert_current_mid
,
4603 .read_data_offset
= smb2_read_data_offset
,
4604 .read_data_length
= smb2_read_data_length
,
4605 .map_error
= map_smb2_to_linux_error
,
4606 .find_mid
= smb2_find_mid
,
4607 .check_message
= smb2_check_message
,
4608 .dump_detail
= smb2_dump_detail
,
4609 .clear_stats
= smb2_clear_stats
,
4610 .print_stats
= smb2_print_stats
,
4611 .is_oplock_break
= smb2_is_valid_oplock_break
,
4612 .handle_cancelled_mid
= smb2_handle_cancelled_mid
,
4613 .downgrade_oplock
= smb2_downgrade_oplock
,
4614 .need_neg
= smb2_need_neg
,
4615 .negotiate
= smb2_negotiate
,
4616 .negotiate_wsize
= smb2_negotiate_wsize
,
4617 .negotiate_rsize
= smb2_negotiate_rsize
,
4618 .sess_setup
= SMB2_sess_setup
,
4619 .logoff
= SMB2_logoff
,
4620 .tree_connect
= SMB2_tcon
,
4621 .tree_disconnect
= SMB2_tdis
,
4622 .qfs_tcon
= smb2_qfs_tcon
,
4623 .is_path_accessible
= smb2_is_path_accessible
,
4624 .can_echo
= smb2_can_echo
,
4626 .query_path_info
= smb2_query_path_info
,
4627 .get_srv_inum
= smb2_get_srv_inum
,
4628 .query_file_info
= smb2_query_file_info
,
4629 .set_path_size
= smb2_set_path_size
,
4630 .set_file_size
= smb2_set_file_size
,
4631 .set_file_info
= smb2_set_file_info
,
4632 .set_compression
= smb2_set_compression
,
4633 .mkdir
= smb2_mkdir
,
4634 .mkdir_setinfo
= smb2_mkdir_setinfo
,
4635 .rmdir
= smb2_rmdir
,
4636 .unlink
= smb2_unlink
,
4637 .rename
= smb2_rename_path
,
4638 .create_hardlink
= smb2_create_hardlink
,
4639 .query_symlink
= smb2_query_symlink
,
4640 .query_mf_symlink
= smb3_query_mf_symlink
,
4641 .create_mf_symlink
= smb3_create_mf_symlink
,
4642 .open
= smb2_open_file
,
4643 .set_fid
= smb2_set_fid
,
4644 .close
= smb2_close_file
,
4645 .flush
= smb2_flush_file
,
4646 .async_readv
= smb2_async_readv
,
4647 .async_writev
= smb2_async_writev
,
4648 .sync_read
= smb2_sync_read
,
4649 .sync_write
= smb2_sync_write
,
4650 .query_dir_first
= smb2_query_dir_first
,
4651 .query_dir_next
= smb2_query_dir_next
,
4652 .close_dir
= smb2_close_dir
,
4653 .calc_smb_size
= smb2_calc_size
,
4654 .is_status_pending
= smb2_is_status_pending
,
4655 .is_session_expired
= smb2_is_session_expired
,
4656 .oplock_response
= smb2_oplock_response
,
4657 .queryfs
= smb2_queryfs
,
4658 .mand_lock
= smb2_mand_lock
,
4659 .mand_unlock_range
= smb2_unlock_range
,
4660 .push_mand_locks
= smb2_push_mandatory_locks
,
4661 .get_lease_key
= smb2_get_lease_key
,
4662 .set_lease_key
= smb2_set_lease_key
,
4663 .new_lease_key
= smb2_new_lease_key
,
4664 .calc_signature
= smb2_calc_signature
,
4665 .is_read_op
= smb2_is_read_op
,
4666 .set_oplock_level
= smb2_set_oplock_level
,
4667 .create_lease_buf
= smb2_create_lease_buf
,
4668 .parse_lease_buf
= smb2_parse_lease_buf
,
4669 .copychunk_range
= smb2_copychunk_range
,
4670 .wp_retry_size
= smb2_wp_retry_size
,
4671 .dir_needs_close
= smb2_dir_needs_close
,
4672 .get_dfs_refer
= smb2_get_dfs_refer
,
4673 .select_sectype
= smb2_select_sectype
,
4674 #ifdef CONFIG_CIFS_XATTR
4675 .query_all_EAs
= smb2_query_eas
,
4676 .set_EA
= smb2_set_ea
,
4677 #endif /* CIFS_XATTR */
4678 .get_acl
= get_smb2_acl
,
4679 .get_acl_by_fid
= get_smb2_acl_by_fid
,
4680 .set_acl
= set_smb2_acl
,
4681 .next_header
= smb2_next_header
,
4682 .ioctl_query_info
= smb2_ioctl_query_info
,
4683 .make_node
= smb2_make_node
,
4684 .fiemap
= smb3_fiemap
,
4685 .llseek
= smb3_llseek
,
4688 struct smb_version_operations smb21_operations
= {
4689 .compare_fids
= smb2_compare_fids
,
4690 .setup_request
= smb2_setup_request
,
4691 .setup_async_request
= smb2_setup_async_request
,
4692 .check_receive
= smb2_check_receive
,
4693 .add_credits
= smb2_add_credits
,
4694 .set_credits
= smb2_set_credits
,
4695 .get_credits_field
= smb2_get_credits_field
,
4696 .get_credits
= smb2_get_credits
,
4697 .wait_mtu_credits
= smb2_wait_mtu_credits
,
4698 .adjust_credits
= smb2_adjust_credits
,
4699 .get_next_mid
= smb2_get_next_mid
,
4700 .revert_current_mid
= smb2_revert_current_mid
,
4701 .read_data_offset
= smb2_read_data_offset
,
4702 .read_data_length
= smb2_read_data_length
,
4703 .map_error
= map_smb2_to_linux_error
,
4704 .find_mid
= smb2_find_mid
,
4705 .check_message
= smb2_check_message
,
4706 .dump_detail
= smb2_dump_detail
,
4707 .clear_stats
= smb2_clear_stats
,
4708 .print_stats
= smb2_print_stats
,
4709 .is_oplock_break
= smb2_is_valid_oplock_break
,
4710 .handle_cancelled_mid
= smb2_handle_cancelled_mid
,
4711 .downgrade_oplock
= smb2_downgrade_oplock
,
4712 .need_neg
= smb2_need_neg
,
4713 .negotiate
= smb2_negotiate
,
4714 .negotiate_wsize
= smb2_negotiate_wsize
,
4715 .negotiate_rsize
= smb2_negotiate_rsize
,
4716 .sess_setup
= SMB2_sess_setup
,
4717 .logoff
= SMB2_logoff
,
4718 .tree_connect
= SMB2_tcon
,
4719 .tree_disconnect
= SMB2_tdis
,
4720 .qfs_tcon
= smb2_qfs_tcon
,
4721 .is_path_accessible
= smb2_is_path_accessible
,
4722 .can_echo
= smb2_can_echo
,
4724 .query_path_info
= smb2_query_path_info
,
4725 .get_srv_inum
= smb2_get_srv_inum
,
4726 .query_file_info
= smb2_query_file_info
,
4727 .set_path_size
= smb2_set_path_size
,
4728 .set_file_size
= smb2_set_file_size
,
4729 .set_file_info
= smb2_set_file_info
,
4730 .set_compression
= smb2_set_compression
,
4731 .mkdir
= smb2_mkdir
,
4732 .mkdir_setinfo
= smb2_mkdir_setinfo
,
4733 .rmdir
= smb2_rmdir
,
4734 .unlink
= smb2_unlink
,
4735 .rename
= smb2_rename_path
,
4736 .create_hardlink
= smb2_create_hardlink
,
4737 .query_symlink
= smb2_query_symlink
,
4738 .query_mf_symlink
= smb3_query_mf_symlink
,
4739 .create_mf_symlink
= smb3_create_mf_symlink
,
4740 .open
= smb2_open_file
,
4741 .set_fid
= smb2_set_fid
,
4742 .close
= smb2_close_file
,
4743 .flush
= smb2_flush_file
,
4744 .async_readv
= smb2_async_readv
,
4745 .async_writev
= smb2_async_writev
,
4746 .sync_read
= smb2_sync_read
,
4747 .sync_write
= smb2_sync_write
,
4748 .query_dir_first
= smb2_query_dir_first
,
4749 .query_dir_next
= smb2_query_dir_next
,
4750 .close_dir
= smb2_close_dir
,
4751 .calc_smb_size
= smb2_calc_size
,
4752 .is_status_pending
= smb2_is_status_pending
,
4753 .is_session_expired
= smb2_is_session_expired
,
4754 .oplock_response
= smb2_oplock_response
,
4755 .queryfs
= smb2_queryfs
,
4756 .mand_lock
= smb2_mand_lock
,
4757 .mand_unlock_range
= smb2_unlock_range
,
4758 .push_mand_locks
= smb2_push_mandatory_locks
,
4759 .get_lease_key
= smb2_get_lease_key
,
4760 .set_lease_key
= smb2_set_lease_key
,
4761 .new_lease_key
= smb2_new_lease_key
,
4762 .calc_signature
= smb2_calc_signature
,
4763 .is_read_op
= smb21_is_read_op
,
4764 .set_oplock_level
= smb21_set_oplock_level
,
4765 .create_lease_buf
= smb2_create_lease_buf
,
4766 .parse_lease_buf
= smb2_parse_lease_buf
,
4767 .copychunk_range
= smb2_copychunk_range
,
4768 .wp_retry_size
= smb2_wp_retry_size
,
4769 .dir_needs_close
= smb2_dir_needs_close
,
4770 .enum_snapshots
= smb3_enum_snapshots
,
4771 .get_dfs_refer
= smb2_get_dfs_refer
,
4772 .select_sectype
= smb2_select_sectype
,
4773 #ifdef CONFIG_CIFS_XATTR
4774 .query_all_EAs
= smb2_query_eas
,
4775 .set_EA
= smb2_set_ea
,
4776 #endif /* CIFS_XATTR */
4777 .get_acl
= get_smb2_acl
,
4778 .get_acl_by_fid
= get_smb2_acl_by_fid
,
4779 .set_acl
= set_smb2_acl
,
4780 .next_header
= smb2_next_header
,
4781 .ioctl_query_info
= smb2_ioctl_query_info
,
4782 .make_node
= smb2_make_node
,
4783 .fiemap
= smb3_fiemap
,
4784 .llseek
= smb3_llseek
,
4787 struct smb_version_operations smb30_operations
= {
4788 .compare_fids
= smb2_compare_fids
,
4789 .setup_request
= smb2_setup_request
,
4790 .setup_async_request
= smb2_setup_async_request
,
4791 .check_receive
= smb2_check_receive
,
4792 .add_credits
= smb2_add_credits
,
4793 .set_credits
= smb2_set_credits
,
4794 .get_credits_field
= smb2_get_credits_field
,
4795 .get_credits
= smb2_get_credits
,
4796 .wait_mtu_credits
= smb2_wait_mtu_credits
,
4797 .adjust_credits
= smb2_adjust_credits
,
4798 .get_next_mid
= smb2_get_next_mid
,
4799 .revert_current_mid
= smb2_revert_current_mid
,
4800 .read_data_offset
= smb2_read_data_offset
,
4801 .read_data_length
= smb2_read_data_length
,
4802 .map_error
= map_smb2_to_linux_error
,
4803 .find_mid
= smb2_find_mid
,
4804 .check_message
= smb2_check_message
,
4805 .dump_detail
= smb2_dump_detail
,
4806 .clear_stats
= smb2_clear_stats
,
4807 .print_stats
= smb2_print_stats
,
4808 .dump_share_caps
= smb2_dump_share_caps
,
4809 .is_oplock_break
= smb2_is_valid_oplock_break
,
4810 .handle_cancelled_mid
= smb2_handle_cancelled_mid
,
4811 .downgrade_oplock
= smb3_downgrade_oplock
,
4812 .need_neg
= smb2_need_neg
,
4813 .negotiate
= smb2_negotiate
,
4814 .negotiate_wsize
= smb3_negotiate_wsize
,
4815 .negotiate_rsize
= smb3_negotiate_rsize
,
4816 .sess_setup
= SMB2_sess_setup
,
4817 .logoff
= SMB2_logoff
,
4818 .tree_connect
= SMB2_tcon
,
4819 .tree_disconnect
= SMB2_tdis
,
4820 .qfs_tcon
= smb3_qfs_tcon
,
4821 .is_path_accessible
= smb2_is_path_accessible
,
4822 .can_echo
= smb2_can_echo
,
4824 .query_path_info
= smb2_query_path_info
,
4825 .get_srv_inum
= smb2_get_srv_inum
,
4826 .query_file_info
= smb2_query_file_info
,
4827 .set_path_size
= smb2_set_path_size
,
4828 .set_file_size
= smb2_set_file_size
,
4829 .set_file_info
= smb2_set_file_info
,
4830 .set_compression
= smb2_set_compression
,
4831 .mkdir
= smb2_mkdir
,
4832 .mkdir_setinfo
= smb2_mkdir_setinfo
,
4833 .rmdir
= smb2_rmdir
,
4834 .unlink
= smb2_unlink
,
4835 .rename
= smb2_rename_path
,
4836 .create_hardlink
= smb2_create_hardlink
,
4837 .query_symlink
= smb2_query_symlink
,
4838 .query_mf_symlink
= smb3_query_mf_symlink
,
4839 .create_mf_symlink
= smb3_create_mf_symlink
,
4840 .open
= smb2_open_file
,
4841 .set_fid
= smb2_set_fid
,
4842 .close
= smb2_close_file
,
4843 .close_getattr
= smb2_close_getattr
,
4844 .flush
= smb2_flush_file
,
4845 .async_readv
= smb2_async_readv
,
4846 .async_writev
= smb2_async_writev
,
4847 .sync_read
= smb2_sync_read
,
4848 .sync_write
= smb2_sync_write
,
4849 .query_dir_first
= smb2_query_dir_first
,
4850 .query_dir_next
= smb2_query_dir_next
,
4851 .close_dir
= smb2_close_dir
,
4852 .calc_smb_size
= smb2_calc_size
,
4853 .is_status_pending
= smb2_is_status_pending
,
4854 .is_session_expired
= smb2_is_session_expired
,
4855 .oplock_response
= smb2_oplock_response
,
4856 .queryfs
= smb2_queryfs
,
4857 .mand_lock
= smb2_mand_lock
,
4858 .mand_unlock_range
= smb2_unlock_range
,
4859 .push_mand_locks
= smb2_push_mandatory_locks
,
4860 .get_lease_key
= smb2_get_lease_key
,
4861 .set_lease_key
= smb2_set_lease_key
,
4862 .new_lease_key
= smb2_new_lease_key
,
4863 .generate_signingkey
= generate_smb30signingkey
,
4864 .calc_signature
= smb3_calc_signature
,
4865 .set_integrity
= smb3_set_integrity
,
4866 .is_read_op
= smb21_is_read_op
,
4867 .set_oplock_level
= smb3_set_oplock_level
,
4868 .create_lease_buf
= smb3_create_lease_buf
,
4869 .parse_lease_buf
= smb3_parse_lease_buf
,
4870 .copychunk_range
= smb2_copychunk_range
,
4871 .duplicate_extents
= smb2_duplicate_extents
,
4872 .validate_negotiate
= smb3_validate_negotiate
,
4873 .wp_retry_size
= smb2_wp_retry_size
,
4874 .dir_needs_close
= smb2_dir_needs_close
,
4875 .fallocate
= smb3_fallocate
,
4876 .enum_snapshots
= smb3_enum_snapshots
,
4877 .init_transform_rq
= smb3_init_transform_rq
,
4878 .is_transform_hdr
= smb3_is_transform_hdr
,
4879 .receive_transform
= smb3_receive_transform
,
4880 .get_dfs_refer
= smb2_get_dfs_refer
,
4881 .select_sectype
= smb2_select_sectype
,
4882 #ifdef CONFIG_CIFS_XATTR
4883 .query_all_EAs
= smb2_query_eas
,
4884 .set_EA
= smb2_set_ea
,
4885 #endif /* CIFS_XATTR */
4886 .get_acl
= get_smb2_acl
,
4887 .get_acl_by_fid
= get_smb2_acl_by_fid
,
4888 .set_acl
= set_smb2_acl
,
4889 .next_header
= smb2_next_header
,
4890 .ioctl_query_info
= smb2_ioctl_query_info
,
4891 .make_node
= smb2_make_node
,
4892 .fiemap
= smb3_fiemap
,
4893 .llseek
= smb3_llseek
,
4896 struct smb_version_operations smb311_operations
= {
4897 .compare_fids
= smb2_compare_fids
,
4898 .setup_request
= smb2_setup_request
,
4899 .setup_async_request
= smb2_setup_async_request
,
4900 .check_receive
= smb2_check_receive
,
4901 .add_credits
= smb2_add_credits
,
4902 .set_credits
= smb2_set_credits
,
4903 .get_credits_field
= smb2_get_credits_field
,
4904 .get_credits
= smb2_get_credits
,
4905 .wait_mtu_credits
= smb2_wait_mtu_credits
,
4906 .adjust_credits
= smb2_adjust_credits
,
4907 .get_next_mid
= smb2_get_next_mid
,
4908 .revert_current_mid
= smb2_revert_current_mid
,
4909 .read_data_offset
= smb2_read_data_offset
,
4910 .read_data_length
= smb2_read_data_length
,
4911 .map_error
= map_smb2_to_linux_error
,
4912 .find_mid
= smb2_find_mid
,
4913 .check_message
= smb2_check_message
,
4914 .dump_detail
= smb2_dump_detail
,
4915 .clear_stats
= smb2_clear_stats
,
4916 .print_stats
= smb2_print_stats
,
4917 .dump_share_caps
= smb2_dump_share_caps
,
4918 .is_oplock_break
= smb2_is_valid_oplock_break
,
4919 .handle_cancelled_mid
= smb2_handle_cancelled_mid
,
4920 .downgrade_oplock
= smb3_downgrade_oplock
,
4921 .need_neg
= smb2_need_neg
,
4922 .negotiate
= smb2_negotiate
,
4923 .negotiate_wsize
= smb3_negotiate_wsize
,
4924 .negotiate_rsize
= smb3_negotiate_rsize
,
4925 .sess_setup
= SMB2_sess_setup
,
4926 .logoff
= SMB2_logoff
,
4927 .tree_connect
= SMB2_tcon
,
4928 .tree_disconnect
= SMB2_tdis
,
4929 .qfs_tcon
= smb3_qfs_tcon
,
4930 .is_path_accessible
= smb2_is_path_accessible
,
4931 .can_echo
= smb2_can_echo
,
4933 .query_path_info
= smb2_query_path_info
,
4934 .get_srv_inum
= smb2_get_srv_inum
,
4935 .query_file_info
= smb2_query_file_info
,
4936 .set_path_size
= smb2_set_path_size
,
4937 .set_file_size
= smb2_set_file_size
,
4938 .set_file_info
= smb2_set_file_info
,
4939 .set_compression
= smb2_set_compression
,
4940 .mkdir
= smb2_mkdir
,
4941 .mkdir_setinfo
= smb2_mkdir_setinfo
,
4942 .posix_mkdir
= smb311_posix_mkdir
,
4943 .rmdir
= smb2_rmdir
,
4944 .unlink
= smb2_unlink
,
4945 .rename
= smb2_rename_path
,
4946 .create_hardlink
= smb2_create_hardlink
,
4947 .query_symlink
= smb2_query_symlink
,
4948 .query_mf_symlink
= smb3_query_mf_symlink
,
4949 .create_mf_symlink
= smb3_create_mf_symlink
,
4950 .open
= smb2_open_file
,
4951 .set_fid
= smb2_set_fid
,
4952 .close
= smb2_close_file
,
4953 .close_getattr
= smb2_close_getattr
,
4954 .flush
= smb2_flush_file
,
4955 .async_readv
= smb2_async_readv
,
4956 .async_writev
= smb2_async_writev
,
4957 .sync_read
= smb2_sync_read
,
4958 .sync_write
= smb2_sync_write
,
4959 .query_dir_first
= smb2_query_dir_first
,
4960 .query_dir_next
= smb2_query_dir_next
,
4961 .close_dir
= smb2_close_dir
,
4962 .calc_smb_size
= smb2_calc_size
,
4963 .is_status_pending
= smb2_is_status_pending
,
4964 .is_session_expired
= smb2_is_session_expired
,
4965 .oplock_response
= smb2_oplock_response
,
4966 .queryfs
= smb311_queryfs
,
4967 .mand_lock
= smb2_mand_lock
,
4968 .mand_unlock_range
= smb2_unlock_range
,
4969 .push_mand_locks
= smb2_push_mandatory_locks
,
4970 .get_lease_key
= smb2_get_lease_key
,
4971 .set_lease_key
= smb2_set_lease_key
,
4972 .new_lease_key
= smb2_new_lease_key
,
4973 .generate_signingkey
= generate_smb311signingkey
,
4974 .calc_signature
= smb3_calc_signature
,
4975 .set_integrity
= smb3_set_integrity
,
4976 .is_read_op
= smb21_is_read_op
,
4977 .set_oplock_level
= smb3_set_oplock_level
,
4978 .create_lease_buf
= smb3_create_lease_buf
,
4979 .parse_lease_buf
= smb3_parse_lease_buf
,
4980 .copychunk_range
= smb2_copychunk_range
,
4981 .duplicate_extents
= smb2_duplicate_extents
,
4982 /* .validate_negotiate = smb3_validate_negotiate, */ /* not used in 3.11 */
4983 .wp_retry_size
= smb2_wp_retry_size
,
4984 .dir_needs_close
= smb2_dir_needs_close
,
4985 .fallocate
= smb3_fallocate
,
4986 .enum_snapshots
= smb3_enum_snapshots
,
4987 .init_transform_rq
= smb3_init_transform_rq
,
4988 .is_transform_hdr
= smb3_is_transform_hdr
,
4989 .receive_transform
= smb3_receive_transform
,
4990 .get_dfs_refer
= smb2_get_dfs_refer
,
4991 .select_sectype
= smb2_select_sectype
,
4992 #ifdef CONFIG_CIFS_XATTR
4993 .query_all_EAs
= smb2_query_eas
,
4994 .set_EA
= smb2_set_ea
,
4995 #endif /* CIFS_XATTR */
4996 .get_acl
= get_smb2_acl
,
4997 .get_acl_by_fid
= get_smb2_acl_by_fid
,
4998 .set_acl
= set_smb2_acl
,
4999 .next_header
= smb2_next_header
,
5000 .ioctl_query_info
= smb2_ioctl_query_info
,
5001 .make_node
= smb2_make_node
,
5002 .fiemap
= smb3_fiemap
,
5003 .llseek
= smb3_llseek
,
5006 struct smb_version_values smb20_values
= {
5007 .version_string
= SMB20_VERSION_STRING
,
5008 .protocol_id
= SMB20_PROT_ID
,
5009 .req_capabilities
= 0, /* MBZ */
5010 .large_lock_type
= 0,
5011 .exclusive_lock_type
= SMB2_LOCKFLAG_EXCLUSIVE_LOCK
,
5012 .shared_lock_type
= SMB2_LOCKFLAG_SHARED_LOCK
,
5013 .unlock_lock_type
= SMB2_LOCKFLAG_UNLOCK
,
5014 .header_size
= sizeof(struct smb2_sync_hdr
),
5015 .header_preamble_size
= 0,
5016 .max_header_size
= MAX_SMB2_HDR_SIZE
,
5017 .read_rsp_size
= sizeof(struct smb2_read_rsp
) - 1,
5018 .lock_cmd
= SMB2_LOCK
,
5020 .cap_nt_find
= SMB2_NT_FIND
,
5021 .cap_large_files
= SMB2_LARGE_FILES
,
5022 .signing_enabled
= SMB2_NEGOTIATE_SIGNING_ENABLED
| SMB2_NEGOTIATE_SIGNING_REQUIRED
,
5023 .signing_required
= SMB2_NEGOTIATE_SIGNING_REQUIRED
,
5024 .create_lease_size
= sizeof(struct create_lease
),
5027 struct smb_version_values smb21_values
= {
5028 .version_string
= SMB21_VERSION_STRING
,
5029 .protocol_id
= SMB21_PROT_ID
,
5030 .req_capabilities
= 0, /* MBZ on negotiate req until SMB3 dialect */
5031 .large_lock_type
= 0,
5032 .exclusive_lock_type
= SMB2_LOCKFLAG_EXCLUSIVE_LOCK
,
5033 .shared_lock_type
= SMB2_LOCKFLAG_SHARED_LOCK
,
5034 .unlock_lock_type
= SMB2_LOCKFLAG_UNLOCK
,
5035 .header_size
= sizeof(struct smb2_sync_hdr
),
5036 .header_preamble_size
= 0,
5037 .max_header_size
= MAX_SMB2_HDR_SIZE
,
5038 .read_rsp_size
= sizeof(struct smb2_read_rsp
) - 1,
5039 .lock_cmd
= SMB2_LOCK
,
5041 .cap_nt_find
= SMB2_NT_FIND
,
5042 .cap_large_files
= SMB2_LARGE_FILES
,
5043 .signing_enabled
= SMB2_NEGOTIATE_SIGNING_ENABLED
| SMB2_NEGOTIATE_SIGNING_REQUIRED
,
5044 .signing_required
= SMB2_NEGOTIATE_SIGNING_REQUIRED
,
5045 .create_lease_size
= sizeof(struct create_lease
),
5048 struct smb_version_values smb3any_values
= {
5049 .version_string
= SMB3ANY_VERSION_STRING
,
5050 .protocol_id
= SMB302_PROT_ID
, /* doesn't matter, send protocol array */
5051 .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
,
5052 .large_lock_type
= 0,
5053 .exclusive_lock_type
= SMB2_LOCKFLAG_EXCLUSIVE_LOCK
,
5054 .shared_lock_type
= SMB2_LOCKFLAG_SHARED_LOCK
,
5055 .unlock_lock_type
= SMB2_LOCKFLAG_UNLOCK
,
5056 .header_size
= sizeof(struct smb2_sync_hdr
),
5057 .header_preamble_size
= 0,
5058 .max_header_size
= MAX_SMB2_HDR_SIZE
,
5059 .read_rsp_size
= sizeof(struct smb2_read_rsp
) - 1,
5060 .lock_cmd
= SMB2_LOCK
,
5062 .cap_nt_find
= SMB2_NT_FIND
,
5063 .cap_large_files
= SMB2_LARGE_FILES
,
5064 .signing_enabled
= SMB2_NEGOTIATE_SIGNING_ENABLED
| SMB2_NEGOTIATE_SIGNING_REQUIRED
,
5065 .signing_required
= SMB2_NEGOTIATE_SIGNING_REQUIRED
,
5066 .create_lease_size
= sizeof(struct create_lease_v2
),
5069 struct smb_version_values smbdefault_values
= {
5070 .version_string
= SMBDEFAULT_VERSION_STRING
,
5071 .protocol_id
= SMB302_PROT_ID
, /* doesn't matter, send protocol array */
5072 .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
,
5073 .large_lock_type
= 0,
5074 .exclusive_lock_type
= SMB2_LOCKFLAG_EXCLUSIVE_LOCK
,
5075 .shared_lock_type
= SMB2_LOCKFLAG_SHARED_LOCK
,
5076 .unlock_lock_type
= SMB2_LOCKFLAG_UNLOCK
,
5077 .header_size
= sizeof(struct smb2_sync_hdr
),
5078 .header_preamble_size
= 0,
5079 .max_header_size
= MAX_SMB2_HDR_SIZE
,
5080 .read_rsp_size
= sizeof(struct smb2_read_rsp
) - 1,
5081 .lock_cmd
= SMB2_LOCK
,
5083 .cap_nt_find
= SMB2_NT_FIND
,
5084 .cap_large_files
= SMB2_LARGE_FILES
,
5085 .signing_enabled
= SMB2_NEGOTIATE_SIGNING_ENABLED
| SMB2_NEGOTIATE_SIGNING_REQUIRED
,
5086 .signing_required
= SMB2_NEGOTIATE_SIGNING_REQUIRED
,
5087 .create_lease_size
= sizeof(struct create_lease_v2
),
5090 struct smb_version_values smb30_values
= {
5091 .version_string
= SMB30_VERSION_STRING
,
5092 .protocol_id
= SMB30_PROT_ID
,
5093 .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
,
5094 .large_lock_type
= 0,
5095 .exclusive_lock_type
= SMB2_LOCKFLAG_EXCLUSIVE_LOCK
,
5096 .shared_lock_type
= SMB2_LOCKFLAG_SHARED_LOCK
,
5097 .unlock_lock_type
= SMB2_LOCKFLAG_UNLOCK
,
5098 .header_size
= sizeof(struct smb2_sync_hdr
),
5099 .header_preamble_size
= 0,
5100 .max_header_size
= MAX_SMB2_HDR_SIZE
,
5101 .read_rsp_size
= sizeof(struct smb2_read_rsp
) - 1,
5102 .lock_cmd
= SMB2_LOCK
,
5104 .cap_nt_find
= SMB2_NT_FIND
,
5105 .cap_large_files
= SMB2_LARGE_FILES
,
5106 .signing_enabled
= SMB2_NEGOTIATE_SIGNING_ENABLED
| SMB2_NEGOTIATE_SIGNING_REQUIRED
,
5107 .signing_required
= SMB2_NEGOTIATE_SIGNING_REQUIRED
,
5108 .create_lease_size
= sizeof(struct create_lease_v2
),
5111 struct smb_version_values smb302_values
= {
5112 .version_string
= SMB302_VERSION_STRING
,
5113 .protocol_id
= SMB302_PROT_ID
,
5114 .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
,
5115 .large_lock_type
= 0,
5116 .exclusive_lock_type
= SMB2_LOCKFLAG_EXCLUSIVE_LOCK
,
5117 .shared_lock_type
= SMB2_LOCKFLAG_SHARED_LOCK
,
5118 .unlock_lock_type
= SMB2_LOCKFLAG_UNLOCK
,
5119 .header_size
= sizeof(struct smb2_sync_hdr
),
5120 .header_preamble_size
= 0,
5121 .max_header_size
= MAX_SMB2_HDR_SIZE
,
5122 .read_rsp_size
= sizeof(struct smb2_read_rsp
) - 1,
5123 .lock_cmd
= SMB2_LOCK
,
5125 .cap_nt_find
= SMB2_NT_FIND
,
5126 .cap_large_files
= SMB2_LARGE_FILES
,
5127 .signing_enabled
= SMB2_NEGOTIATE_SIGNING_ENABLED
| SMB2_NEGOTIATE_SIGNING_REQUIRED
,
5128 .signing_required
= SMB2_NEGOTIATE_SIGNING_REQUIRED
,
5129 .create_lease_size
= sizeof(struct create_lease_v2
),
5132 struct smb_version_values smb311_values
= {
5133 .version_string
= SMB311_VERSION_STRING
,
5134 .protocol_id
= SMB311_PROT_ID
,
5135 .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
,
5136 .large_lock_type
= 0,
5137 .exclusive_lock_type
= SMB2_LOCKFLAG_EXCLUSIVE_LOCK
,
5138 .shared_lock_type
= SMB2_LOCKFLAG_SHARED_LOCK
,
5139 .unlock_lock_type
= SMB2_LOCKFLAG_UNLOCK
,
5140 .header_size
= sizeof(struct smb2_sync_hdr
),
5141 .header_preamble_size
= 0,
5142 .max_header_size
= MAX_SMB2_HDR_SIZE
,
5143 .read_rsp_size
= sizeof(struct smb2_read_rsp
) - 1,
5144 .lock_cmd
= SMB2_LOCK
,
5146 .cap_nt_find
= SMB2_NT_FIND
,
5147 .cap_large_files
= SMB2_LARGE_FILES
,
5148 .signing_enabled
= SMB2_NEGOTIATE_SIGNING_ENABLED
| SMB2_NEGOTIATE_SIGNING_REQUIRED
,
5149 .signing_required
= SMB2_NEGOTIATE_SIGNING_REQUIRED
,
5150 .create_lease_size
= sizeof(struct create_lease_v2
),