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>
18 #include "smb2proto.h"
19 #include "cifsproto.h"
20 #include "cifs_debug.h"
21 #include "cifs_unicode.h"
22 #include "smb2status.h"
24 #include "cifs_ioctl.h"
25 #include "smbdirect.h"
27 /* Change credits for different ops and return the total number of credits */
29 change_conf(struct TCP_Server_Info
*server
)
31 server
->credits
+= server
->echo_credits
+ server
->oplock_credits
;
32 server
->oplock_credits
= server
->echo_credits
= 0;
33 switch (server
->credits
) {
37 server
->echoes
= false;
38 server
->oplocks
= false;
41 server
->echoes
= true;
42 server
->oplocks
= false;
43 server
->echo_credits
= 1;
46 server
->echoes
= true;
48 server
->oplocks
= true;
49 server
->oplock_credits
= 1;
51 server
->oplocks
= false;
53 server
->echo_credits
= 1;
55 server
->credits
-= server
->echo_credits
+ server
->oplock_credits
;
56 return server
->credits
+ server
->echo_credits
+ server
->oplock_credits
;
60 smb2_add_credits(struct TCP_Server_Info
*server
,
61 const struct cifs_credits
*credits
, const int optype
)
64 unsigned int add
= credits
->value
;
65 unsigned int instance
= credits
->instance
;
66 bool reconnect_detected
= false;
68 spin_lock(&server
->req_lock
);
69 val
= server
->ops
->get_credits_field(server
, optype
);
71 /* eg found case where write overlapping reconnect messed up credits */
72 if (((optype
& CIFS_OP_MASK
) == CIFS_NEG_OP
) && (*val
!= 0))
73 trace_smb3_reconnect_with_invalid_credits(server
->CurrentMid
,
74 server
->hostname
, *val
);
75 if ((instance
== 0) || (instance
== server
->reconnect_instance
))
78 reconnect_detected
= true;
81 *val
= 65000; /* Don't get near 64K credits, avoid srv bugs */
82 pr_warn_once("server overflowed SMB3 credits\n");
85 if (server
->in_flight
== 0 && (optype
& CIFS_OP_MASK
) != CIFS_NEG_OP
)
86 rc
= change_conf(server
);
88 * Sometimes server returns 0 credits on oplock break ack - we need to
89 * rebalance credits in this case.
91 else if (server
->in_flight
> 0 && server
->oplock_credits
== 0 &&
93 if (server
->credits
> 1) {
95 server
->oplock_credits
++;
98 spin_unlock(&server
->req_lock
);
99 wake_up(&server
->request_q
);
101 if (reconnect_detected
)
102 cifs_dbg(FYI
, "trying to put %d credits from the old server instance %d\n",
105 if (server
->tcpStatus
== CifsNeedReconnect
106 || server
->tcpStatus
== CifsExiting
)
111 /* change_conf hasn't been executed */
114 cifs_server_dbg(VFS
, "Possible client or server bug - zero credits\n");
117 cifs_server_dbg(VFS
, "disabling echoes and oplocks\n");
120 cifs_dbg(FYI
, "disabling oplocks\n");
123 cifs_dbg(FYI
, "add %u credits total=%d\n", add
, rc
);
128 smb2_set_credits(struct TCP_Server_Info
*server
, const int val
)
130 spin_lock(&server
->req_lock
);
131 server
->credits
= val
;
133 server
->reconnect_instance
++;
134 spin_unlock(&server
->req_lock
);
135 /* don't log while holding the lock */
137 cifs_dbg(FYI
, "set credits to 1 due to smb2 reconnect\n");
141 smb2_get_credits_field(struct TCP_Server_Info
*server
, const int optype
)
145 return &server
->echo_credits
;
147 return &server
->oplock_credits
;
149 return &server
->credits
;
154 smb2_get_credits(struct mid_q_entry
*mid
)
156 return mid
->credits_received
;
160 smb2_wait_mtu_credits(struct TCP_Server_Info
*server
, unsigned int size
,
161 unsigned int *num
, struct cifs_credits
*credits
)
164 unsigned int scredits
;
166 spin_lock(&server
->req_lock
);
168 if (server
->credits
<= 0) {
169 spin_unlock(&server
->req_lock
);
170 cifs_num_waiters_inc(server
);
171 rc
= wait_event_killable(server
->request_q
,
172 has_credits(server
, &server
->credits
, 1));
173 cifs_num_waiters_dec(server
);
176 spin_lock(&server
->req_lock
);
178 if (server
->tcpStatus
== CifsExiting
) {
179 spin_unlock(&server
->req_lock
);
183 scredits
= server
->credits
;
184 /* can deadlock with reopen */
186 *num
= SMB2_MAX_BUFFER_SIZE
;
188 credits
->instance
= 0;
192 /* leave some credits for reopen and other ops */
194 *num
= min_t(unsigned int, size
,
195 scredits
* SMB2_MAX_BUFFER_SIZE
);
198 DIV_ROUND_UP(*num
, SMB2_MAX_BUFFER_SIZE
);
199 credits
->instance
= server
->reconnect_instance
;
200 server
->credits
-= credits
->value
;
202 if (server
->in_flight
> server
->max_in_flight
)
203 server
->max_in_flight
= server
->in_flight
;
207 spin_unlock(&server
->req_lock
);
212 smb2_adjust_credits(struct TCP_Server_Info
*server
,
213 struct cifs_credits
*credits
,
214 const unsigned int payload_size
)
216 int new_val
= DIV_ROUND_UP(payload_size
, SMB2_MAX_BUFFER_SIZE
);
218 if (!credits
->value
|| credits
->value
== new_val
)
221 if (credits
->value
< new_val
) {
222 WARN_ONCE(1, "request has less credits (%d) than required (%d)",
223 credits
->value
, new_val
);
227 spin_lock(&server
->req_lock
);
229 if (server
->reconnect_instance
!= credits
->instance
) {
230 spin_unlock(&server
->req_lock
);
231 cifs_server_dbg(VFS
, "trying to return %d credits to old session\n",
232 credits
->value
- new_val
);
236 server
->credits
+= credits
->value
- new_val
;
237 spin_unlock(&server
->req_lock
);
238 wake_up(&server
->request_q
);
239 credits
->value
= new_val
;
244 smb2_get_next_mid(struct TCP_Server_Info
*server
)
247 /* for SMB2 we need the current value */
248 spin_lock(&GlobalMid_Lock
);
249 mid
= server
->CurrentMid
++;
250 spin_unlock(&GlobalMid_Lock
);
255 smb2_revert_current_mid(struct TCP_Server_Info
*server
, const unsigned int val
)
257 spin_lock(&GlobalMid_Lock
);
258 if (server
->CurrentMid
>= val
)
259 server
->CurrentMid
-= val
;
260 spin_unlock(&GlobalMid_Lock
);
263 static struct mid_q_entry
*
264 smb2_find_mid(struct TCP_Server_Info
*server
, char *buf
)
266 struct mid_q_entry
*mid
;
267 struct smb2_sync_hdr
*shdr
= (struct smb2_sync_hdr
*)buf
;
268 __u64 wire_mid
= le64_to_cpu(shdr
->MessageId
);
270 if (shdr
->ProtocolId
== SMB2_TRANSFORM_PROTO_NUM
) {
271 cifs_server_dbg(VFS
, "Encrypted frame parsing not supported yet\n");
275 spin_lock(&GlobalMid_Lock
);
276 list_for_each_entry(mid
, &server
->pending_mid_q
, qhead
) {
277 if ((mid
->mid
== wire_mid
) &&
278 (mid
->mid_state
== MID_REQUEST_SUBMITTED
) &&
279 (mid
->command
== shdr
->Command
)) {
280 kref_get(&mid
->refcount
);
281 spin_unlock(&GlobalMid_Lock
);
285 spin_unlock(&GlobalMid_Lock
);
290 smb2_dump_detail(void *buf
, struct TCP_Server_Info
*server
)
292 #ifdef CONFIG_CIFS_DEBUG2
293 struct smb2_sync_hdr
*shdr
= (struct smb2_sync_hdr
*)buf
;
295 cifs_server_dbg(VFS
, "Cmd: %d Err: 0x%x Flags: 0x%x Mid: %llu Pid: %d\n",
296 shdr
->Command
, shdr
->Status
, shdr
->Flags
, shdr
->MessageId
,
298 cifs_server_dbg(VFS
, "smb buf %p len %u\n", buf
,
299 server
->ops
->calc_smb_size(buf
, server
));
304 smb2_need_neg(struct TCP_Server_Info
*server
)
306 return server
->max_read
== 0;
310 smb2_negotiate(const unsigned int xid
, struct cifs_ses
*ses
)
314 cifs_ses_server(ses
)->CurrentMid
= 0;
315 rc
= SMB2_negotiate(xid
, ses
);
316 /* BB we probably don't need to retry with modern servers */
323 smb2_negotiate_wsize(struct cifs_tcon
*tcon
, struct smb_vol
*volume_info
)
325 struct TCP_Server_Info
*server
= tcon
->ses
->server
;
328 /* start with specified wsize, or default */
329 wsize
= volume_info
->wsize
? volume_info
->wsize
: CIFS_DEFAULT_IOSIZE
;
330 wsize
= min_t(unsigned int, wsize
, server
->max_write
);
331 if (!(server
->capabilities
& SMB2_GLOBAL_CAP_LARGE_MTU
))
332 wsize
= min_t(unsigned int, wsize
, SMB2_MAX_BUFFER_SIZE
);
338 smb3_negotiate_wsize(struct cifs_tcon
*tcon
, struct smb_vol
*volume_info
)
340 struct TCP_Server_Info
*server
= tcon
->ses
->server
;
343 /* start with specified wsize, or default */
344 wsize
= volume_info
->wsize
? volume_info
->wsize
: SMB3_DEFAULT_IOSIZE
;
345 wsize
= min_t(unsigned int, wsize
, server
->max_write
);
346 #ifdef CONFIG_CIFS_SMB_DIRECT
350 * Account for SMB2 data transfer packet header and
351 * possible encryption header
353 wsize
= min_t(unsigned int,
355 server
->smbd_conn
->max_fragmented_send_size
-
356 SMB2_READWRITE_PDU_HEADER_SIZE
-
357 sizeof(struct smb2_transform_hdr
));
359 wsize
= min_t(unsigned int,
360 wsize
, server
->smbd_conn
->max_readwrite_size
);
363 if (!(server
->capabilities
& SMB2_GLOBAL_CAP_LARGE_MTU
))
364 wsize
= min_t(unsigned int, wsize
, SMB2_MAX_BUFFER_SIZE
);
370 smb2_negotiate_rsize(struct cifs_tcon
*tcon
, struct smb_vol
*volume_info
)
372 struct TCP_Server_Info
*server
= tcon
->ses
->server
;
375 /* start with specified rsize, or default */
376 rsize
= volume_info
->rsize
? volume_info
->rsize
: CIFS_DEFAULT_IOSIZE
;
377 rsize
= min_t(unsigned int, rsize
, server
->max_read
);
379 if (!(server
->capabilities
& SMB2_GLOBAL_CAP_LARGE_MTU
))
380 rsize
= min_t(unsigned int, rsize
, SMB2_MAX_BUFFER_SIZE
);
386 smb3_negotiate_rsize(struct cifs_tcon
*tcon
, struct smb_vol
*volume_info
)
388 struct TCP_Server_Info
*server
= tcon
->ses
->server
;
391 /* start with specified rsize, or default */
392 rsize
= volume_info
->rsize
? volume_info
->rsize
: SMB3_DEFAULT_IOSIZE
;
393 rsize
= min_t(unsigned int, rsize
, server
->max_read
);
394 #ifdef CONFIG_CIFS_SMB_DIRECT
398 * Account for SMB2 data transfer packet header and
399 * possible encryption header
401 rsize
= min_t(unsigned int,
403 server
->smbd_conn
->max_fragmented_recv_size
-
404 SMB2_READWRITE_PDU_HEADER_SIZE
-
405 sizeof(struct smb2_transform_hdr
));
407 rsize
= min_t(unsigned int,
408 rsize
, server
->smbd_conn
->max_readwrite_size
);
412 if (!(server
->capabilities
& SMB2_GLOBAL_CAP_LARGE_MTU
))
413 rsize
= min_t(unsigned int, rsize
, SMB2_MAX_BUFFER_SIZE
);
419 parse_server_interfaces(struct network_interface_info_ioctl_rsp
*buf
,
421 struct cifs_server_iface
**iface_list
,
424 struct network_interface_info_ioctl_rsp
*p
;
425 struct sockaddr_in
*addr4
;
426 struct sockaddr_in6
*addr6
;
427 struct iface_info_ipv4
*p4
;
428 struct iface_info_ipv6
*p6
;
429 struct cifs_server_iface
*info
;
439 * Fist pass: count and sanity check
442 bytes_left
= buf_len
;
444 while (bytes_left
>= sizeof(*p
)) {
446 next
= le32_to_cpu(p
->Next
);
448 bytes_left
-= sizeof(*p
);
451 p
= (struct network_interface_info_ioctl_rsp
*)((u8
*)p
+next
);
456 cifs_dbg(VFS
, "%s: malformed interface info\n", __func__
);
461 if (bytes_left
|| p
->Next
)
462 cifs_dbg(VFS
, "%s: incomplete interface info\n", __func__
);
466 * Second pass: extract info to internal structure
469 *iface_list
= kcalloc(nb_iface
, sizeof(**iface_list
), GFP_KERNEL
);
476 bytes_left
= buf_len
;
478 while (bytes_left
>= sizeof(*p
)) {
479 info
->speed
= le64_to_cpu(p
->LinkSpeed
);
480 info
->rdma_capable
= le32_to_cpu(p
->Capability
& RDMA_CAPABLE
);
481 info
->rss_capable
= le32_to_cpu(p
->Capability
& RSS_CAPABLE
);
483 cifs_dbg(FYI
, "%s: adding iface %zu\n", __func__
, *iface_count
);
484 cifs_dbg(FYI
, "%s: speed %zu bps\n", __func__
, info
->speed
);
485 cifs_dbg(FYI
, "%s: capabilities 0x%08x\n", __func__
,
486 le32_to_cpu(p
->Capability
));
490 * The kernel and wire socket structures have the same
491 * layout and use network byte order but make the
492 * conversion explicit in case either one changes.
495 addr4
= (struct sockaddr_in
*)&info
->sockaddr
;
496 p4
= (struct iface_info_ipv4
*)p
->Buffer
;
497 addr4
->sin_family
= AF_INET
;
498 memcpy(&addr4
->sin_addr
, &p4
->IPv4Address
, 4);
500 /* [MS-SMB2] 2.2.32.5.1.1 Clients MUST ignore these */
501 addr4
->sin_port
= cpu_to_be16(CIFS_PORT
);
503 cifs_dbg(FYI
, "%s: ipv4 %pI4\n", __func__
,
507 addr6
= (struct sockaddr_in6
*)&info
->sockaddr
;
508 p6
= (struct iface_info_ipv6
*)p
->Buffer
;
509 addr6
->sin6_family
= AF_INET6
;
510 memcpy(&addr6
->sin6_addr
, &p6
->IPv6Address
, 16);
512 /* [MS-SMB2] 2.2.32.5.1.2 Clients MUST ignore these */
513 addr6
->sin6_flowinfo
= 0;
514 addr6
->sin6_scope_id
= 0;
515 addr6
->sin6_port
= cpu_to_be16(CIFS_PORT
);
517 cifs_dbg(FYI
, "%s: ipv6 %pI6\n", __func__
,
522 "%s: skipping unsupported socket family\n",
530 next
= le32_to_cpu(p
->Next
);
533 p
= (struct network_interface_info_ioctl_rsp
*)((u8
*)p
+next
);
551 static int compare_iface(const void *ia
, const void *ib
)
553 const struct cifs_server_iface
*a
= (struct cifs_server_iface
*)ia
;
554 const struct cifs_server_iface
*b
= (struct cifs_server_iface
*)ib
;
556 return a
->speed
== b
->speed
? 0 : (a
->speed
> b
->speed
? -1 : 1);
560 SMB3_request_interfaces(const unsigned int xid
, struct cifs_tcon
*tcon
)
563 unsigned int ret_data_len
= 0;
564 struct network_interface_info_ioctl_rsp
*out_buf
= NULL
;
565 struct cifs_server_iface
*iface_list
;
567 struct cifs_ses
*ses
= tcon
->ses
;
569 rc
= SMB2_ioctl(xid
, tcon
, NO_FILE_ID
, NO_FILE_ID
,
570 FSCTL_QUERY_NETWORK_INTERFACE_INFO
, true /* is_fsctl */,
571 NULL
/* no data input */, 0 /* no data input */,
572 CIFSMaxBufSize
, (char **)&out_buf
, &ret_data_len
);
573 if (rc
== -EOPNOTSUPP
) {
575 "server does not support query network interfaces\n");
577 } else if (rc
!= 0) {
578 cifs_tcon_dbg(VFS
, "error %d on ioctl to get interface list\n", rc
);
582 rc
= parse_server_interfaces(out_buf
, ret_data_len
,
583 &iface_list
, &iface_count
);
587 /* sort interfaces from fastest to slowest */
588 sort(iface_list
, iface_count
, sizeof(*iface_list
), compare_iface
, NULL
);
590 spin_lock(&ses
->iface_lock
);
591 kfree(ses
->iface_list
);
592 ses
->iface_list
= iface_list
;
593 ses
->iface_count
= iface_count
;
594 ses
->iface_last_update
= jiffies
;
595 spin_unlock(&ses
->iface_lock
);
603 smb2_close_cached_fid(struct kref
*ref
)
605 struct cached_fid
*cfid
= container_of(ref
, struct cached_fid
,
608 if (cfid
->is_valid
) {
609 cifs_dbg(FYI
, "clear cached root file handle\n");
610 SMB2_close(0, cfid
->tcon
, cfid
->fid
->persistent_fid
,
611 cfid
->fid
->volatile_fid
);
612 cfid
->is_valid
= false;
613 cfid
->file_all_info_is_valid
= false;
614 cfid
->has_lease
= false;
618 void close_shroot(struct cached_fid
*cfid
)
620 mutex_lock(&cfid
->fid_mutex
);
621 kref_put(&cfid
->refcount
, smb2_close_cached_fid
);
622 mutex_unlock(&cfid
->fid_mutex
);
625 void close_shroot_lease_locked(struct cached_fid
*cfid
)
627 if (cfid
->has_lease
) {
628 cfid
->has_lease
= false;
629 kref_put(&cfid
->refcount
, smb2_close_cached_fid
);
633 void close_shroot_lease(struct cached_fid
*cfid
)
635 mutex_lock(&cfid
->fid_mutex
);
636 close_shroot_lease_locked(cfid
);
637 mutex_unlock(&cfid
->fid_mutex
);
641 smb2_cached_lease_break(struct work_struct
*work
)
643 struct cached_fid
*cfid
= container_of(work
,
644 struct cached_fid
, lease_break
);
646 close_shroot_lease(cfid
);
650 * Open the directory at the root of a share
652 int open_shroot(unsigned int xid
, struct cifs_tcon
*tcon
,
653 struct cifs_sb_info
*cifs_sb
, struct cifs_fid
*pfid
)
655 struct cifs_ses
*ses
= tcon
->ses
;
656 struct TCP_Server_Info
*server
= ses
->server
;
657 struct cifs_open_parms oparms
;
658 struct smb2_create_rsp
*o_rsp
= NULL
;
659 struct smb2_query_info_rsp
*qi_rsp
= NULL
;
661 struct smb_rqst rqst
[2];
662 struct kvec rsp_iov
[2];
663 struct kvec open_iov
[SMB2_CREATE_IOV_SIZE
];
664 struct kvec qi_iov
[1];
666 __le16 utf16_path
= 0; /* Null - since an open of top of share */
667 u8 oplock
= SMB2_OPLOCK_LEVEL_II
;
669 mutex_lock(&tcon
->crfid
.fid_mutex
);
670 if (tcon
->crfid
.is_valid
) {
671 cifs_dbg(FYI
, "found a cached root file handle\n");
672 memcpy(pfid
, tcon
->crfid
.fid
, sizeof(struct cifs_fid
));
673 kref_get(&tcon
->crfid
.refcount
);
674 mutex_unlock(&tcon
->crfid
.fid_mutex
);
679 * We do not hold the lock for the open because in case
680 * SMB2_open needs to reconnect, it will end up calling
681 * cifs_mark_open_files_invalid() which takes the lock again
682 * thus causing a deadlock
685 mutex_unlock(&tcon
->crfid
.fid_mutex
);
687 if (smb3_encryption_required(tcon
))
688 flags
|= CIFS_TRANSFORM_REQ
;
690 if (!server
->ops
->new_lease_key
)
693 server
->ops
->new_lease_key(pfid
);
695 memset(rqst
, 0, sizeof(rqst
));
696 resp_buftype
[0] = resp_buftype
[1] = CIFS_NO_BUFFER
;
697 memset(rsp_iov
, 0, sizeof(rsp_iov
));
700 memset(&open_iov
, 0, sizeof(open_iov
));
701 rqst
[0].rq_iov
= open_iov
;
702 rqst
[0].rq_nvec
= SMB2_CREATE_IOV_SIZE
;
705 oparms
.create_options
= cifs_create_options(cifs_sb
, 0);
706 oparms
.desired_access
= FILE_READ_ATTRIBUTES
;
707 oparms
.disposition
= FILE_OPEN
;
709 oparms
.reconnect
= false;
711 rc
= SMB2_open_init(tcon
, &rqst
[0], &oplock
, &oparms
, &utf16_path
);
714 smb2_set_next_command(tcon
, &rqst
[0]);
716 memset(&qi_iov
, 0, sizeof(qi_iov
));
717 rqst
[1].rq_iov
= qi_iov
;
720 rc
= SMB2_query_info_init(tcon
, &rqst
[1], COMPOUND_FID
,
721 COMPOUND_FID
, FILE_ALL_INFORMATION
,
723 sizeof(struct smb2_file_all_info
) +
724 PATH_MAX
* 2, 0, NULL
);
728 smb2_set_related(&rqst
[1]);
730 rc
= compound_send_recv(xid
, ses
, flags
, 2, rqst
,
731 resp_buftype
, rsp_iov
);
732 mutex_lock(&tcon
->crfid
.fid_mutex
);
735 * Now we need to check again as the cached root might have
736 * been successfully re-opened from a concurrent process
739 if (tcon
->crfid
.is_valid
) {
740 /* work was already done */
742 /* stash fids for close() later */
743 struct cifs_fid fid
= {
744 .persistent_fid
= pfid
->persistent_fid
,
745 .volatile_fid
= pfid
->volatile_fid
,
749 * caller expects this func to set pfid to a valid
750 * cached root, so we copy the existing one and get a
753 memcpy(pfid
, tcon
->crfid
.fid
, sizeof(*pfid
));
754 kref_get(&tcon
->crfid
.refcount
);
756 mutex_unlock(&tcon
->crfid
.fid_mutex
);
759 /* close extra handle outside of crit sec */
760 SMB2_close(xid
, tcon
, fid
.persistent_fid
, fid
.volatile_fid
);
765 /* Cached root is still invalid, continue normaly */
768 if (rc
== -EREMCHG
) {
769 tcon
->need_reconnect
= true;
770 pr_warn_once("server share %s deleted\n",
776 atomic_inc(&tcon
->num_remote_opens
);
778 o_rsp
= (struct smb2_create_rsp
*)rsp_iov
[0].iov_base
;
779 oparms
.fid
->persistent_fid
= o_rsp
->PersistentFileId
;
780 oparms
.fid
->volatile_fid
= o_rsp
->VolatileFileId
;
781 #ifdef CONFIG_CIFS_DEBUG2
782 oparms
.fid
->mid
= le64_to_cpu(o_rsp
->sync_hdr
.MessageId
);
783 #endif /* CIFS_DEBUG2 */
785 memcpy(tcon
->crfid
.fid
, pfid
, sizeof(struct cifs_fid
));
786 tcon
->crfid
.tcon
= tcon
;
787 tcon
->crfid
.is_valid
= true;
788 kref_init(&tcon
->crfid
.refcount
);
790 /* BB TBD check to see if oplock level check can be removed below */
791 if (o_rsp
->OplockLevel
== SMB2_OPLOCK_LEVEL_LEASE
) {
792 kref_get(&tcon
->crfid
.refcount
);
793 tcon
->crfid
.has_lease
= true;
794 smb2_parse_contexts(server
, o_rsp
,
796 oparms
.fid
->lease_key
, &oplock
,
801 qi_rsp
= (struct smb2_query_info_rsp
*)rsp_iov
[1].iov_base
;
802 if (le32_to_cpu(qi_rsp
->OutputBufferLength
) < sizeof(struct smb2_file_all_info
))
804 if (!smb2_validate_and_copy_iov(
805 le16_to_cpu(qi_rsp
->OutputBufferOffset
),
806 sizeof(struct smb2_file_all_info
),
807 &rsp_iov
[1], sizeof(struct smb2_file_all_info
),
808 (char *)&tcon
->crfid
.file_all_info
))
809 tcon
->crfid
.file_all_info_is_valid
= true;
812 mutex_unlock(&tcon
->crfid
.fid_mutex
);
814 SMB2_open_free(&rqst
[0]);
815 SMB2_query_info_free(&rqst
[1]);
816 free_rsp_buf(resp_buftype
[0], rsp_iov
[0].iov_base
);
817 free_rsp_buf(resp_buftype
[1], rsp_iov
[1].iov_base
);
822 smb3_qfs_tcon(const unsigned int xid
, struct cifs_tcon
*tcon
,
823 struct cifs_sb_info
*cifs_sb
)
826 __le16 srch_path
= 0; /* Null - open root of share */
827 u8 oplock
= SMB2_OPLOCK_LEVEL_NONE
;
828 struct cifs_open_parms oparms
;
830 bool no_cached_open
= tcon
->nohandlecache
;
833 oparms
.desired_access
= FILE_READ_ATTRIBUTES
;
834 oparms
.disposition
= FILE_OPEN
;
835 oparms
.create_options
= cifs_create_options(cifs_sb
, 0);
837 oparms
.reconnect
= false;
840 rc
= SMB2_open(xid
, &oparms
, &srch_path
, &oplock
, NULL
, NULL
,
843 rc
= open_shroot(xid
, tcon
, cifs_sb
, &fid
);
848 SMB3_request_interfaces(xid
, tcon
);
850 SMB2_QFS_attr(xid
, tcon
, fid
.persistent_fid
, fid
.volatile_fid
,
851 FS_ATTRIBUTE_INFORMATION
);
852 SMB2_QFS_attr(xid
, tcon
, fid
.persistent_fid
, fid
.volatile_fid
,
853 FS_DEVICE_INFORMATION
);
854 SMB2_QFS_attr(xid
, tcon
, fid
.persistent_fid
, fid
.volatile_fid
,
855 FS_VOLUME_INFORMATION
);
856 SMB2_QFS_attr(xid
, tcon
, fid
.persistent_fid
, fid
.volatile_fid
,
857 FS_SECTOR_SIZE_INFORMATION
); /* SMB3 specific */
859 SMB2_close(xid
, tcon
, fid
.persistent_fid
, fid
.volatile_fid
);
861 close_shroot(&tcon
->crfid
);
865 smb2_qfs_tcon(const unsigned int xid
, struct cifs_tcon
*tcon
,
866 struct cifs_sb_info
*cifs_sb
)
869 __le16 srch_path
= 0; /* Null - open root of share */
870 u8 oplock
= SMB2_OPLOCK_LEVEL_NONE
;
871 struct cifs_open_parms oparms
;
875 oparms
.desired_access
= FILE_READ_ATTRIBUTES
;
876 oparms
.disposition
= FILE_OPEN
;
877 oparms
.create_options
= cifs_create_options(cifs_sb
, 0);
879 oparms
.reconnect
= false;
881 rc
= SMB2_open(xid
, &oparms
, &srch_path
, &oplock
, NULL
, NULL
,
886 SMB2_QFS_attr(xid
, tcon
, fid
.persistent_fid
, fid
.volatile_fid
,
887 FS_ATTRIBUTE_INFORMATION
);
888 SMB2_QFS_attr(xid
, tcon
, fid
.persistent_fid
, fid
.volatile_fid
,
889 FS_DEVICE_INFORMATION
);
890 SMB2_close(xid
, tcon
, fid
.persistent_fid
, fid
.volatile_fid
);
894 smb2_is_path_accessible(const unsigned int xid
, struct cifs_tcon
*tcon
,
895 struct cifs_sb_info
*cifs_sb
, const char *full_path
)
899 __u8 oplock
= SMB2_OPLOCK_LEVEL_NONE
;
900 struct cifs_open_parms oparms
;
903 if ((*full_path
== 0) && tcon
->crfid
.is_valid
)
906 utf16_path
= cifs_convert_path_to_utf16(full_path
, cifs_sb
);
911 oparms
.desired_access
= FILE_READ_ATTRIBUTES
;
912 oparms
.disposition
= FILE_OPEN
;
913 oparms
.create_options
= cifs_create_options(cifs_sb
, 0);
915 oparms
.reconnect
= false;
917 rc
= SMB2_open(xid
, &oparms
, utf16_path
, &oplock
, NULL
, NULL
, NULL
,
924 rc
= SMB2_close(xid
, tcon
, fid
.persistent_fid
, fid
.volatile_fid
);
930 smb2_get_srv_inum(const unsigned int xid
, struct cifs_tcon
*tcon
,
931 struct cifs_sb_info
*cifs_sb
, const char *full_path
,
932 u64
*uniqueid
, FILE_ALL_INFO
*data
)
934 *uniqueid
= le64_to_cpu(data
->IndexNumber
);
939 smb2_query_file_info(const unsigned int xid
, struct cifs_tcon
*tcon
,
940 struct cifs_fid
*fid
, FILE_ALL_INFO
*data
)
943 struct smb2_file_all_info
*smb2_data
;
945 smb2_data
= kzalloc(sizeof(struct smb2_file_all_info
) + PATH_MAX
* 2,
947 if (smb2_data
== NULL
)
950 rc
= SMB2_query_info(xid
, tcon
, fid
->persistent_fid
, fid
->volatile_fid
,
953 move_smb2_info_to_cifs(data
, smb2_data
);
958 #ifdef CONFIG_CIFS_XATTR
960 move_smb2_ea_to_cifs(char *dst
, size_t dst_size
,
961 struct smb2_file_full_ea_info
*src
, size_t src_size
,
962 const unsigned char *ea_name
)
965 unsigned int ea_name_len
= ea_name
? strlen(ea_name
) : 0;
967 size_t buf_size
= dst_size
;
968 size_t name_len
, value_len
, user_name_len
;
970 while (src_size
> 0) {
971 name
= &src
->ea_data
[0];
972 name_len
= (size_t)src
->ea_name_length
;
973 value
= &src
->ea_data
[src
->ea_name_length
+ 1];
974 value_len
= (size_t)le16_to_cpu(src
->ea_value_length
);
979 if (src_size
< 8 + name_len
+ 1 + value_len
) {
980 cifs_dbg(FYI
, "EA entry goes beyond length of list\n");
986 if (ea_name_len
== name_len
&&
987 memcmp(ea_name
, name
, name_len
) == 0) {
991 if (dst_size
< value_len
) {
995 memcpy(dst
, value
, value_len
);
999 /* 'user.' plus a terminating null */
1000 user_name_len
= 5 + 1 + name_len
;
1002 if (buf_size
== 0) {
1003 /* skip copy - calc size only */
1004 rc
+= user_name_len
;
1005 } else if (dst_size
>= user_name_len
) {
1006 dst_size
-= user_name_len
;
1007 memcpy(dst
, "user.", 5);
1009 memcpy(dst
, src
->ea_data
, name_len
);
1013 rc
+= user_name_len
;
1015 /* stop before overrun buffer */
1021 if (!src
->next_entry_offset
)
1024 if (src_size
< le32_to_cpu(src
->next_entry_offset
)) {
1025 /* stop before overrun buffer */
1029 src_size
-= le32_to_cpu(src
->next_entry_offset
);
1030 src
= (void *)((char *)src
+
1031 le32_to_cpu(src
->next_entry_offset
));
1034 /* didn't find the named attribute */
1043 smb2_query_eas(const unsigned int xid
, struct cifs_tcon
*tcon
,
1044 const unsigned char *path
, const unsigned char *ea_name
,
1045 char *ea_data
, size_t buf_size
,
1046 struct cifs_sb_info
*cifs_sb
)
1050 struct kvec rsp_iov
= {NULL
, 0};
1051 int buftype
= CIFS_NO_BUFFER
;
1052 struct smb2_query_info_rsp
*rsp
;
1053 struct smb2_file_full_ea_info
*info
= NULL
;
1055 utf16_path
= cifs_convert_path_to_utf16(path
, cifs_sb
);
1059 rc
= smb2_query_info_compound(xid
, tcon
, utf16_path
,
1061 FILE_FULL_EA_INFORMATION
,
1064 MAX_SMB2_CREATE_RESPONSE_SIZE
-
1065 MAX_SMB2_CLOSE_RESPONSE_SIZE
,
1066 &rsp_iov
, &buftype
, cifs_sb
);
1069 * If ea_name is NULL (listxattr) and there are no EAs,
1070 * return 0 as it's not an error. Otherwise, the specified
1071 * ea_name was not found.
1073 if (!ea_name
&& rc
== -ENODATA
)
1078 rsp
= (struct smb2_query_info_rsp
*)rsp_iov
.iov_base
;
1079 rc
= smb2_validate_iov(le16_to_cpu(rsp
->OutputBufferOffset
),
1080 le32_to_cpu(rsp
->OutputBufferLength
),
1082 sizeof(struct smb2_file_full_ea_info
));
1086 info
= (struct smb2_file_full_ea_info
*)(
1087 le16_to_cpu(rsp
->OutputBufferOffset
) + (char *)rsp
);
1088 rc
= move_smb2_ea_to_cifs(ea_data
, buf_size
, info
,
1089 le32_to_cpu(rsp
->OutputBufferLength
), ea_name
);
1093 free_rsp_buf(buftype
, rsp_iov
.iov_base
);
1099 smb2_set_ea(const unsigned int xid
, struct cifs_tcon
*tcon
,
1100 const char *path
, const char *ea_name
, const void *ea_value
,
1101 const __u16 ea_value_len
, const struct nls_table
*nls_codepage
,
1102 struct cifs_sb_info
*cifs_sb
)
1104 struct cifs_ses
*ses
= tcon
->ses
;
1105 __le16
*utf16_path
= NULL
;
1106 int ea_name_len
= strlen(ea_name
);
1109 struct smb_rqst rqst
[3];
1110 int resp_buftype
[3];
1111 struct kvec rsp_iov
[3];
1112 struct kvec open_iov
[SMB2_CREATE_IOV_SIZE
];
1113 struct cifs_open_parms oparms
;
1114 __u8 oplock
= SMB2_OPLOCK_LEVEL_NONE
;
1115 struct cifs_fid fid
;
1116 struct kvec si_iov
[SMB2_SET_INFO_IOV_SIZE
];
1117 unsigned int size
[1];
1119 struct smb2_file_full_ea_info
*ea
= NULL
;
1120 struct kvec close_iov
[1];
1121 struct smb2_query_info_rsp
*rsp
;
1122 int rc
, used_len
= 0;
1124 if (smb3_encryption_required(tcon
))
1125 flags
|= CIFS_TRANSFORM_REQ
;
1127 if (ea_name_len
> 255)
1130 utf16_path
= cifs_convert_path_to_utf16(path
, cifs_sb
);
1134 memset(rqst
, 0, sizeof(rqst
));
1135 resp_buftype
[0] = resp_buftype
[1] = resp_buftype
[2] = CIFS_NO_BUFFER
;
1136 memset(rsp_iov
, 0, sizeof(rsp_iov
));
1138 if (ses
->server
->ops
->query_all_EAs
) {
1140 rc
= ses
->server
->ops
->query_all_EAs(xid
, tcon
, path
,
1146 /* If we are adding a attribute we should first check
1147 * if there will be enough space available to store
1148 * the new EA. If not we should not add it since we
1149 * would not be able to even read the EAs back.
1151 rc
= smb2_query_info_compound(xid
, tcon
, utf16_path
,
1153 FILE_FULL_EA_INFORMATION
,
1156 MAX_SMB2_CREATE_RESPONSE_SIZE
-
1157 MAX_SMB2_CLOSE_RESPONSE_SIZE
,
1158 &rsp_iov
[1], &resp_buftype
[1], cifs_sb
);
1160 rsp
= (struct smb2_query_info_rsp
*)rsp_iov
[1].iov_base
;
1161 used_len
= le32_to_cpu(rsp
->OutputBufferLength
);
1163 free_rsp_buf(resp_buftype
[1], rsp_iov
[1].iov_base
);
1164 resp_buftype
[1] = CIFS_NO_BUFFER
;
1165 memset(&rsp_iov
[1], 0, sizeof(rsp_iov
[1]));
1168 /* Use a fudge factor of 256 bytes in case we collide
1169 * with a different set_EAs command.
1171 if(CIFSMaxBufSize
- MAX_SMB2_CREATE_RESPONSE_SIZE
-
1172 MAX_SMB2_CLOSE_RESPONSE_SIZE
- 256 <
1173 used_len
+ ea_name_len
+ ea_value_len
+ 1) {
1181 memset(&open_iov
, 0, sizeof(open_iov
));
1182 rqst
[0].rq_iov
= open_iov
;
1183 rqst
[0].rq_nvec
= SMB2_CREATE_IOV_SIZE
;
1185 memset(&oparms
, 0, sizeof(oparms
));
1187 oparms
.desired_access
= FILE_WRITE_EA
;
1188 oparms
.disposition
= FILE_OPEN
;
1189 oparms
.create_options
= cifs_create_options(cifs_sb
, 0);
1191 oparms
.reconnect
= false;
1193 rc
= SMB2_open_init(tcon
, &rqst
[0], &oplock
, &oparms
, utf16_path
);
1196 smb2_set_next_command(tcon
, &rqst
[0]);
1200 memset(&si_iov
, 0, sizeof(si_iov
));
1201 rqst
[1].rq_iov
= si_iov
;
1202 rqst
[1].rq_nvec
= 1;
1204 len
= sizeof(ea
) + ea_name_len
+ ea_value_len
+ 1;
1205 ea
= kzalloc(len
, GFP_KERNEL
);
1211 ea
->ea_name_length
= ea_name_len
;
1212 ea
->ea_value_length
= cpu_to_le16(ea_value_len
);
1213 memcpy(ea
->ea_data
, ea_name
, ea_name_len
+ 1);
1214 memcpy(ea
->ea_data
+ ea_name_len
+ 1, ea_value
, ea_value_len
);
1219 rc
= SMB2_set_info_init(tcon
, &rqst
[1], COMPOUND_FID
,
1220 COMPOUND_FID
, current
->tgid
,
1221 FILE_FULL_EA_INFORMATION
,
1222 SMB2_O_INFO_FILE
, 0, data
, size
);
1223 smb2_set_next_command(tcon
, &rqst
[1]);
1224 smb2_set_related(&rqst
[1]);
1228 memset(&close_iov
, 0, sizeof(close_iov
));
1229 rqst
[2].rq_iov
= close_iov
;
1230 rqst
[2].rq_nvec
= 1;
1231 rc
= SMB2_close_init(tcon
, &rqst
[2], COMPOUND_FID
, COMPOUND_FID
, false);
1232 smb2_set_related(&rqst
[2]);
1234 rc
= compound_send_recv(xid
, ses
, flags
, 3, rqst
,
1235 resp_buftype
, rsp_iov
);
1236 /* no need to bump num_remote_opens because handle immediately closed */
1241 SMB2_open_free(&rqst
[0]);
1242 SMB2_set_info_free(&rqst
[1]);
1243 SMB2_close_free(&rqst
[2]);
1244 free_rsp_buf(resp_buftype
[0], rsp_iov
[0].iov_base
);
1245 free_rsp_buf(resp_buftype
[1], rsp_iov
[1].iov_base
);
1246 free_rsp_buf(resp_buftype
[2], rsp_iov
[2].iov_base
);
1252 smb2_can_echo(struct TCP_Server_Info
*server
)
1254 return server
->echoes
;
1258 smb2_clear_stats(struct cifs_tcon
*tcon
)
1262 for (i
= 0; i
< NUMBER_OF_SMB2_COMMANDS
; i
++) {
1263 atomic_set(&tcon
->stats
.smb2_stats
.smb2_com_sent
[i
], 0);
1264 atomic_set(&tcon
->stats
.smb2_stats
.smb2_com_failed
[i
], 0);
1269 smb2_dump_share_caps(struct seq_file
*m
, struct cifs_tcon
*tcon
)
1271 seq_puts(m
, "\n\tShare Capabilities:");
1272 if (tcon
->capabilities
& SMB2_SHARE_CAP_DFS
)
1273 seq_puts(m
, " DFS,");
1274 if (tcon
->capabilities
& SMB2_SHARE_CAP_CONTINUOUS_AVAILABILITY
)
1275 seq_puts(m
, " CONTINUOUS AVAILABILITY,");
1276 if (tcon
->capabilities
& SMB2_SHARE_CAP_SCALEOUT
)
1277 seq_puts(m
, " SCALEOUT,");
1278 if (tcon
->capabilities
& SMB2_SHARE_CAP_CLUSTER
)
1279 seq_puts(m
, " CLUSTER,");
1280 if (tcon
->capabilities
& SMB2_SHARE_CAP_ASYMMETRIC
)
1281 seq_puts(m
, " ASYMMETRIC,");
1282 if (tcon
->capabilities
== 0)
1283 seq_puts(m
, " None");
1284 if (tcon
->ss_flags
& SSINFO_FLAGS_ALIGNED_DEVICE
)
1285 seq_puts(m
, " Aligned,");
1286 if (tcon
->ss_flags
& SSINFO_FLAGS_PARTITION_ALIGNED_ON_DEVICE
)
1287 seq_puts(m
, " Partition Aligned,");
1288 if (tcon
->ss_flags
& SSINFO_FLAGS_NO_SEEK_PENALTY
)
1289 seq_puts(m
, " SSD,");
1290 if (tcon
->ss_flags
& SSINFO_FLAGS_TRIM_ENABLED
)
1291 seq_puts(m
, " TRIM-support,");
1293 seq_printf(m
, "\tShare Flags: 0x%x", tcon
->share_flags
);
1294 seq_printf(m
, "\n\ttid: 0x%x", tcon
->tid
);
1295 if (tcon
->perf_sector_size
)
1296 seq_printf(m
, "\tOptimal sector size: 0x%x",
1297 tcon
->perf_sector_size
);
1298 seq_printf(m
, "\tMaximal Access: 0x%x", tcon
->maximal_access
);
1302 smb2_print_stats(struct seq_file
*m
, struct cifs_tcon
*tcon
)
1304 atomic_t
*sent
= tcon
->stats
.smb2_stats
.smb2_com_sent
;
1305 atomic_t
*failed
= tcon
->stats
.smb2_stats
.smb2_com_failed
;
1308 * Can't display SMB2_NEGOTIATE, SESSION_SETUP, LOGOFF, CANCEL and ECHO
1309 * totals (requests sent) since those SMBs are per-session not per tcon
1311 seq_printf(m
, "\nBytes read: %llu Bytes written: %llu",
1312 (long long)(tcon
->bytes_read
),
1313 (long long)(tcon
->bytes_written
));
1314 seq_printf(m
, "\nOpen files: %d total (local), %d open on server",
1315 atomic_read(&tcon
->num_local_opens
),
1316 atomic_read(&tcon
->num_remote_opens
));
1317 seq_printf(m
, "\nTreeConnects: %d total %d failed",
1318 atomic_read(&sent
[SMB2_TREE_CONNECT_HE
]),
1319 atomic_read(&failed
[SMB2_TREE_CONNECT_HE
]));
1320 seq_printf(m
, "\nTreeDisconnects: %d total %d failed",
1321 atomic_read(&sent
[SMB2_TREE_DISCONNECT_HE
]),
1322 atomic_read(&failed
[SMB2_TREE_DISCONNECT_HE
]));
1323 seq_printf(m
, "\nCreates: %d total %d failed",
1324 atomic_read(&sent
[SMB2_CREATE_HE
]),
1325 atomic_read(&failed
[SMB2_CREATE_HE
]));
1326 seq_printf(m
, "\nCloses: %d total %d failed",
1327 atomic_read(&sent
[SMB2_CLOSE_HE
]),
1328 atomic_read(&failed
[SMB2_CLOSE_HE
]));
1329 seq_printf(m
, "\nFlushes: %d total %d failed",
1330 atomic_read(&sent
[SMB2_FLUSH_HE
]),
1331 atomic_read(&failed
[SMB2_FLUSH_HE
]));
1332 seq_printf(m
, "\nReads: %d total %d failed",
1333 atomic_read(&sent
[SMB2_READ_HE
]),
1334 atomic_read(&failed
[SMB2_READ_HE
]));
1335 seq_printf(m
, "\nWrites: %d total %d failed",
1336 atomic_read(&sent
[SMB2_WRITE_HE
]),
1337 atomic_read(&failed
[SMB2_WRITE_HE
]));
1338 seq_printf(m
, "\nLocks: %d total %d failed",
1339 atomic_read(&sent
[SMB2_LOCK_HE
]),
1340 atomic_read(&failed
[SMB2_LOCK_HE
]));
1341 seq_printf(m
, "\nIOCTLs: %d total %d failed",
1342 atomic_read(&sent
[SMB2_IOCTL_HE
]),
1343 atomic_read(&failed
[SMB2_IOCTL_HE
]));
1344 seq_printf(m
, "\nQueryDirectories: %d total %d failed",
1345 atomic_read(&sent
[SMB2_QUERY_DIRECTORY_HE
]),
1346 atomic_read(&failed
[SMB2_QUERY_DIRECTORY_HE
]));
1347 seq_printf(m
, "\nChangeNotifies: %d total %d failed",
1348 atomic_read(&sent
[SMB2_CHANGE_NOTIFY_HE
]),
1349 atomic_read(&failed
[SMB2_CHANGE_NOTIFY_HE
]));
1350 seq_printf(m
, "\nQueryInfos: %d total %d failed",
1351 atomic_read(&sent
[SMB2_QUERY_INFO_HE
]),
1352 atomic_read(&failed
[SMB2_QUERY_INFO_HE
]));
1353 seq_printf(m
, "\nSetInfos: %d total %d failed",
1354 atomic_read(&sent
[SMB2_SET_INFO_HE
]),
1355 atomic_read(&failed
[SMB2_SET_INFO_HE
]));
1356 seq_printf(m
, "\nOplockBreaks: %d sent %d failed",
1357 atomic_read(&sent
[SMB2_OPLOCK_BREAK_HE
]),
1358 atomic_read(&failed
[SMB2_OPLOCK_BREAK_HE
]));
1362 smb2_set_fid(struct cifsFileInfo
*cfile
, struct cifs_fid
*fid
, __u32 oplock
)
1364 struct cifsInodeInfo
*cinode
= CIFS_I(d_inode(cfile
->dentry
));
1365 struct TCP_Server_Info
*server
= tlink_tcon(cfile
->tlink
)->ses
->server
;
1367 cfile
->fid
.persistent_fid
= fid
->persistent_fid
;
1368 cfile
->fid
.volatile_fid
= fid
->volatile_fid
;
1369 cfile
->fid
.access
= fid
->access
;
1370 #ifdef CONFIG_CIFS_DEBUG2
1371 cfile
->fid
.mid
= fid
->mid
;
1372 #endif /* CIFS_DEBUG2 */
1373 server
->ops
->set_oplock_level(cinode
, oplock
, fid
->epoch
,
1375 cinode
->can_cache_brlcks
= CIFS_CACHE_WRITE(cinode
);
1376 memcpy(cfile
->fid
.create_guid
, fid
->create_guid
, 16);
1380 smb2_close_file(const unsigned int xid
, struct cifs_tcon
*tcon
,
1381 struct cifs_fid
*fid
)
1383 SMB2_close(xid
, tcon
, fid
->persistent_fid
, fid
->volatile_fid
);
1387 smb2_close_getattr(const unsigned int xid
, struct cifs_tcon
*tcon
,
1388 struct cifsFileInfo
*cfile
)
1390 struct smb2_file_network_open_info file_inf
;
1391 struct inode
*inode
;
1394 rc
= __SMB2_close(xid
, tcon
, cfile
->fid
.persistent_fid
,
1395 cfile
->fid
.volatile_fid
, &file_inf
);
1399 inode
= d_inode(cfile
->dentry
);
1401 spin_lock(&inode
->i_lock
);
1402 CIFS_I(inode
)->time
= jiffies
;
1404 /* Creation time should not need to be updated on close */
1405 if (file_inf
.LastWriteTime
)
1406 inode
->i_mtime
= cifs_NTtimeToUnix(file_inf
.LastWriteTime
);
1407 if (file_inf
.ChangeTime
)
1408 inode
->i_ctime
= cifs_NTtimeToUnix(file_inf
.ChangeTime
);
1409 if (file_inf
.LastAccessTime
)
1410 inode
->i_atime
= cifs_NTtimeToUnix(file_inf
.LastAccessTime
);
1413 * i_blocks is not related to (i_size / i_blksize),
1414 * but instead 512 byte (2**9) size is required for
1415 * calculating num blocks.
1417 if (le64_to_cpu(file_inf
.AllocationSize
) > 4096)
1419 (512 - 1 + le64_to_cpu(file_inf
.AllocationSize
)) >> 9;
1421 /* End of file and Attributes should not have to be updated on close */
1422 spin_unlock(&inode
->i_lock
);
1426 SMB2_request_res_key(const unsigned int xid
, struct cifs_tcon
*tcon
,
1427 u64 persistent_fid
, u64 volatile_fid
,
1428 struct copychunk_ioctl
*pcchunk
)
1431 unsigned int ret_data_len
;
1432 struct resume_key_req
*res_key
;
1434 rc
= SMB2_ioctl(xid
, tcon
, persistent_fid
, volatile_fid
,
1435 FSCTL_SRV_REQUEST_RESUME_KEY
, true /* is_fsctl */,
1436 NULL
, 0 /* no input */, CIFSMaxBufSize
,
1437 (char **)&res_key
, &ret_data_len
);
1440 cifs_tcon_dbg(VFS
, "refcpy ioctl error %d getting resume key\n", rc
);
1441 goto req_res_key_exit
;
1443 if (ret_data_len
< sizeof(struct resume_key_req
)) {
1444 cifs_tcon_dbg(VFS
, "Invalid refcopy resume key length\n");
1446 goto req_res_key_exit
;
1448 memcpy(pcchunk
->SourceKey
, res_key
->ResumeKey
, COPY_CHUNK_RES_KEY_SIZE
);
1456 struct smb_rqst rqst
[3];
1457 struct kvec rsp_iov
[3];
1458 struct kvec open_iov
[SMB2_CREATE_IOV_SIZE
];
1459 struct kvec qi_iov
[1];
1460 struct kvec io_iov
[SMB2_IOCTL_IOV_SIZE
];
1461 struct kvec si_iov
[SMB2_SET_INFO_IOV_SIZE
];
1462 struct kvec close_iov
[1];
1466 smb2_ioctl_query_info(const unsigned int xid
,
1467 struct cifs_tcon
*tcon
,
1468 struct cifs_sb_info
*cifs_sb
,
1469 __le16
*path
, int is_dir
,
1472 struct iqi_vars
*vars
;
1473 struct smb_rqst
*rqst
;
1474 struct kvec
*rsp_iov
;
1475 struct cifs_ses
*ses
= tcon
->ses
;
1476 char __user
*arg
= (char __user
*)p
;
1477 struct smb_query_info qi
;
1478 struct smb_query_info __user
*pqi
;
1481 struct smb2_query_info_rsp
*qi_rsp
= NULL
;
1482 struct smb2_ioctl_rsp
*io_rsp
= NULL
;
1483 void *buffer
= NULL
;
1484 int resp_buftype
[3];
1485 struct cifs_open_parms oparms
;
1486 u8 oplock
= SMB2_OPLOCK_LEVEL_NONE
;
1487 struct cifs_fid fid
;
1488 unsigned int size
[2];
1490 int create_options
= is_dir
? CREATE_NOT_FILE
: CREATE_NOT_DIR
;
1492 vars
= kzalloc(sizeof(*vars
), GFP_ATOMIC
);
1495 rqst
= &vars
->rqst
[0];
1496 rsp_iov
= &vars
->rsp_iov
[0];
1498 resp_buftype
[0] = resp_buftype
[1] = resp_buftype
[2] = CIFS_NO_BUFFER
;
1500 if (copy_from_user(&qi
, arg
, sizeof(struct smb_query_info
)))
1503 if (qi
.output_buffer_length
> 1024) {
1508 if (!ses
|| !(ses
->server
)) {
1513 if (smb3_encryption_required(tcon
))
1514 flags
|= CIFS_TRANSFORM_REQ
;
1516 buffer
= memdup_user(arg
+ sizeof(struct smb_query_info
),
1517 qi
.output_buffer_length
);
1518 if (IS_ERR(buffer
)) {
1520 return PTR_ERR(buffer
);
1524 rqst
[0].rq_iov
= &vars
->open_iov
[0];
1525 rqst
[0].rq_nvec
= SMB2_CREATE_IOV_SIZE
;
1527 memset(&oparms
, 0, sizeof(oparms
));
1529 oparms
.disposition
= FILE_OPEN
;
1530 oparms
.create_options
= cifs_create_options(cifs_sb
, create_options
);
1532 oparms
.reconnect
= false;
1534 if (qi
.flags
& PASSTHRU_FSCTL
) {
1535 switch (qi
.info_type
& FSCTL_DEVICE_ACCESS_MASK
) {
1536 case FSCTL_DEVICE_ACCESS_FILE_READ_WRITE_ACCESS
:
1537 oparms
.desired_access
= FILE_READ_DATA
| FILE_WRITE_DATA
| FILE_READ_ATTRIBUTES
| SYNCHRONIZE
;
1539 case FSCTL_DEVICE_ACCESS_FILE_ANY_ACCESS
:
1540 oparms
.desired_access
= GENERIC_ALL
;
1542 case FSCTL_DEVICE_ACCESS_FILE_READ_ACCESS
:
1543 oparms
.desired_access
= GENERIC_READ
;
1545 case FSCTL_DEVICE_ACCESS_FILE_WRITE_ACCESS
:
1546 oparms
.desired_access
= GENERIC_WRITE
;
1549 } else if (qi
.flags
& PASSTHRU_SET_INFO
) {
1550 oparms
.desired_access
= GENERIC_WRITE
;
1552 oparms
.desired_access
= FILE_READ_ATTRIBUTES
| READ_CONTROL
;
1555 rc
= SMB2_open_init(tcon
, &rqst
[0], &oplock
, &oparms
, path
);
1558 smb2_set_next_command(tcon
, &rqst
[0]);
1561 if (qi
.flags
& PASSTHRU_FSCTL
) {
1562 /* Can eventually relax perm check since server enforces too */
1563 if (!capable(CAP_SYS_ADMIN
))
1566 rqst
[1].rq_iov
= &vars
->io_iov
[0];
1567 rqst
[1].rq_nvec
= SMB2_IOCTL_IOV_SIZE
;
1569 rc
= SMB2_ioctl_init(tcon
, &rqst
[1],
1570 COMPOUND_FID
, COMPOUND_FID
,
1571 qi
.info_type
, true, buffer
,
1572 qi
.output_buffer_length
,
1574 MAX_SMB2_CREATE_RESPONSE_SIZE
-
1575 MAX_SMB2_CLOSE_RESPONSE_SIZE
);
1577 } else if (qi
.flags
== PASSTHRU_SET_INFO
) {
1578 /* Can eventually relax perm check since server enforces too */
1579 if (!capable(CAP_SYS_ADMIN
))
1582 rqst
[1].rq_iov
= &vars
->si_iov
[0];
1583 rqst
[1].rq_nvec
= 1;
1588 rc
= SMB2_set_info_init(tcon
, &rqst
[1],
1589 COMPOUND_FID
, COMPOUND_FID
,
1591 FILE_END_OF_FILE_INFORMATION
,
1592 SMB2_O_INFO_FILE
, 0, data
, size
);
1594 } else if (qi
.flags
== PASSTHRU_QUERY_INFO
) {
1595 rqst
[1].rq_iov
= &vars
->qi_iov
[0];
1596 rqst
[1].rq_nvec
= 1;
1598 rc
= SMB2_query_info_init(tcon
, &rqst
[1], COMPOUND_FID
,
1599 COMPOUND_FID
, qi
.file_info_class
,
1600 qi
.info_type
, qi
.additional_information
,
1601 qi
.input_buffer_length
,
1602 qi
.output_buffer_length
, buffer
);
1603 } else { /* unknown flags */
1604 cifs_tcon_dbg(VFS
, "Invalid passthru query flags: 0x%x\n",
1611 smb2_set_next_command(tcon
, &rqst
[1]);
1612 smb2_set_related(&rqst
[1]);
1615 rqst
[2].rq_iov
= &vars
->close_iov
[0];
1616 rqst
[2].rq_nvec
= 1;
1618 rc
= SMB2_close_init(tcon
, &rqst
[2], COMPOUND_FID
, COMPOUND_FID
, false);
1621 smb2_set_related(&rqst
[2]);
1623 rc
= compound_send_recv(xid
, ses
, flags
, 3, rqst
,
1624 resp_buftype
, rsp_iov
);
1628 /* No need to bump num_remote_opens since handle immediately closed */
1629 if (qi
.flags
& PASSTHRU_FSCTL
) {
1630 pqi
= (struct smb_query_info __user
*)arg
;
1631 io_rsp
= (struct smb2_ioctl_rsp
*)rsp_iov
[1].iov_base
;
1632 if (le32_to_cpu(io_rsp
->OutputCount
) < qi
.input_buffer_length
)
1633 qi
.input_buffer_length
= le32_to_cpu(io_rsp
->OutputCount
);
1634 if (qi
.input_buffer_length
> 0 &&
1635 le32_to_cpu(io_rsp
->OutputOffset
) + qi
.input_buffer_length
1636 > rsp_iov
[1].iov_len
)
1639 if (copy_to_user(&pqi
->input_buffer_length
,
1640 &qi
.input_buffer_length
,
1641 sizeof(qi
.input_buffer_length
)))
1644 if (copy_to_user((void __user
*)pqi
+ sizeof(struct smb_query_info
),
1645 (const void *)io_rsp
+ le32_to_cpu(io_rsp
->OutputOffset
),
1646 qi
.input_buffer_length
))
1649 pqi
= (struct smb_query_info __user
*)arg
;
1650 qi_rsp
= (struct smb2_query_info_rsp
*)rsp_iov
[1].iov_base
;
1651 if (le32_to_cpu(qi_rsp
->OutputBufferLength
) < qi
.input_buffer_length
)
1652 qi
.input_buffer_length
= le32_to_cpu(qi_rsp
->OutputBufferLength
);
1653 if (copy_to_user(&pqi
->input_buffer_length
,
1654 &qi
.input_buffer_length
,
1655 sizeof(qi
.input_buffer_length
)))
1658 if (copy_to_user(pqi
+ 1, qi_rsp
->Buffer
,
1659 qi
.input_buffer_length
))
1666 SMB2_open_free(&rqst
[0]);
1667 if (qi
.flags
& PASSTHRU_FSCTL
)
1668 SMB2_ioctl_free(&rqst
[1]);
1670 SMB2_query_info_free(&rqst
[1]);
1672 SMB2_close_free(&rqst
[2]);
1673 free_rsp_buf(resp_buftype
[0], rsp_iov
[0].iov_base
);
1674 free_rsp_buf(resp_buftype
[1], rsp_iov
[1].iov_base
);
1675 free_rsp_buf(resp_buftype
[2], rsp_iov
[2].iov_base
);
1684 smb2_copychunk_range(const unsigned int xid
,
1685 struct cifsFileInfo
*srcfile
,
1686 struct cifsFileInfo
*trgtfile
, u64 src_off
,
1687 u64 len
, u64 dest_off
)
1690 unsigned int ret_data_len
;
1691 struct copychunk_ioctl
*pcchunk
;
1692 struct copychunk_ioctl_rsp
*retbuf
= NULL
;
1693 struct cifs_tcon
*tcon
;
1694 int chunks_copied
= 0;
1695 bool chunk_sizes_updated
= false;
1696 ssize_t bytes_written
, total_bytes_written
= 0;
1698 pcchunk
= kmalloc(sizeof(struct copychunk_ioctl
), GFP_KERNEL
);
1700 if (pcchunk
== NULL
)
1703 cifs_dbg(FYI
, "%s: about to call request res key\n", __func__
);
1704 /* Request a key from the server to identify the source of the copy */
1705 rc
= SMB2_request_res_key(xid
, tlink_tcon(srcfile
->tlink
),
1706 srcfile
->fid
.persistent_fid
,
1707 srcfile
->fid
.volatile_fid
, pcchunk
);
1709 /* Note: request_res_key sets res_key null only if rc !=0 */
1713 /* For now array only one chunk long, will make more flexible later */
1714 pcchunk
->ChunkCount
= cpu_to_le32(1);
1715 pcchunk
->Reserved
= 0;
1716 pcchunk
->Reserved2
= 0;
1718 tcon
= tlink_tcon(trgtfile
->tlink
);
1721 pcchunk
->SourceOffset
= cpu_to_le64(src_off
);
1722 pcchunk
->TargetOffset
= cpu_to_le64(dest_off
);
1724 cpu_to_le32(min_t(u32
, len
, tcon
->max_bytes_chunk
));
1726 /* Request server copy to target from src identified by key */
1727 rc
= SMB2_ioctl(xid
, tcon
, trgtfile
->fid
.persistent_fid
,
1728 trgtfile
->fid
.volatile_fid
, FSCTL_SRV_COPYCHUNK_WRITE
,
1729 true /* is_fsctl */, (char *)pcchunk
,
1730 sizeof(struct copychunk_ioctl
), CIFSMaxBufSize
,
1731 (char **)&retbuf
, &ret_data_len
);
1734 sizeof(struct copychunk_ioctl_rsp
)) {
1735 cifs_tcon_dbg(VFS
, "Invalid cchunk response size\n");
1739 if (retbuf
->TotalBytesWritten
== 0) {
1740 cifs_dbg(FYI
, "no bytes copied\n");
1745 * Check if server claimed to write more than we asked
1747 if (le32_to_cpu(retbuf
->TotalBytesWritten
) >
1748 le32_to_cpu(pcchunk
->Length
)) {
1749 cifs_tcon_dbg(VFS
, "Invalid copy chunk response\n");
1753 if (le32_to_cpu(retbuf
->ChunksWritten
) != 1) {
1754 cifs_tcon_dbg(VFS
, "Invalid num chunks written\n");
1760 bytes_written
= le32_to_cpu(retbuf
->TotalBytesWritten
);
1761 src_off
+= bytes_written
;
1762 dest_off
+= bytes_written
;
1763 len
-= bytes_written
;
1764 total_bytes_written
+= bytes_written
;
1766 cifs_dbg(FYI
, "Chunks %d PartialChunk %d Total %zu\n",
1767 le32_to_cpu(retbuf
->ChunksWritten
),
1768 le32_to_cpu(retbuf
->ChunkBytesWritten
),
1770 } else if (rc
== -EINVAL
) {
1771 if (ret_data_len
!= sizeof(struct copychunk_ioctl_rsp
))
1774 cifs_dbg(FYI
, "MaxChunks %d BytesChunk %d MaxCopy %d\n",
1775 le32_to_cpu(retbuf
->ChunksWritten
),
1776 le32_to_cpu(retbuf
->ChunkBytesWritten
),
1777 le32_to_cpu(retbuf
->TotalBytesWritten
));
1780 * Check if this is the first request using these sizes,
1781 * (ie check if copy succeed once with original sizes
1782 * and check if the server gave us different sizes after
1783 * we already updated max sizes on previous request).
1784 * if not then why is the server returning an error now
1786 if ((chunks_copied
!= 0) || chunk_sizes_updated
)
1789 /* Check that server is not asking us to grow size */
1790 if (le32_to_cpu(retbuf
->ChunkBytesWritten
) <
1791 tcon
->max_bytes_chunk
)
1792 tcon
->max_bytes_chunk
=
1793 le32_to_cpu(retbuf
->ChunkBytesWritten
);
1795 goto cchunk_out
; /* server gave us bogus size */
1797 /* No need to change MaxChunks since already set to 1 */
1798 chunk_sizes_updated
= true;
1809 return total_bytes_written
;
1813 smb2_flush_file(const unsigned int xid
, struct cifs_tcon
*tcon
,
1814 struct cifs_fid
*fid
)
1816 return SMB2_flush(xid
, tcon
, fid
->persistent_fid
, fid
->volatile_fid
);
1820 smb2_read_data_offset(char *buf
)
1822 struct smb2_read_rsp
*rsp
= (struct smb2_read_rsp
*)buf
;
1824 return rsp
->DataOffset
;
1828 smb2_read_data_length(char *buf
, bool in_remaining
)
1830 struct smb2_read_rsp
*rsp
= (struct smb2_read_rsp
*)buf
;
1833 return le32_to_cpu(rsp
->DataRemaining
);
1835 return le32_to_cpu(rsp
->DataLength
);
1840 smb2_sync_read(const unsigned int xid
, struct cifs_fid
*pfid
,
1841 struct cifs_io_parms
*parms
, unsigned int *bytes_read
,
1842 char **buf
, int *buf_type
)
1844 parms
->persistent_fid
= pfid
->persistent_fid
;
1845 parms
->volatile_fid
= pfid
->volatile_fid
;
1846 return SMB2_read(xid
, parms
, bytes_read
, buf
, buf_type
);
1850 smb2_sync_write(const unsigned int xid
, struct cifs_fid
*pfid
,
1851 struct cifs_io_parms
*parms
, unsigned int *written
,
1852 struct kvec
*iov
, unsigned long nr_segs
)
1855 parms
->persistent_fid
= pfid
->persistent_fid
;
1856 parms
->volatile_fid
= pfid
->volatile_fid
;
1857 return SMB2_write(xid
, parms
, written
, iov
, nr_segs
);
1860 /* Set or clear the SPARSE_FILE attribute based on value passed in setsparse */
1861 static bool smb2_set_sparse(const unsigned int xid
, struct cifs_tcon
*tcon
,
1862 struct cifsFileInfo
*cfile
, struct inode
*inode
, __u8 setsparse
)
1864 struct cifsInodeInfo
*cifsi
;
1867 cifsi
= CIFS_I(inode
);
1869 /* if file already sparse don't bother setting sparse again */
1870 if ((cifsi
->cifsAttrs
& FILE_ATTRIBUTE_SPARSE_FILE
) && setsparse
)
1871 return true; /* already sparse */
1873 if (!(cifsi
->cifsAttrs
& FILE_ATTRIBUTE_SPARSE_FILE
) && !setsparse
)
1874 return true; /* already not sparse */
1877 * Can't check for sparse support on share the usual way via the
1878 * FS attribute info (FILE_SUPPORTS_SPARSE_FILES) on the share
1879 * since Samba server doesn't set the flag on the share, yet
1880 * supports the set sparse FSCTL and returns sparse correctly
1881 * in the file attributes. If we fail setting sparse though we
1882 * mark that server does not support sparse files for this share
1883 * to avoid repeatedly sending the unsupported fsctl to server
1884 * if the file is repeatedly extended.
1886 if (tcon
->broken_sparse_sup
)
1889 rc
= SMB2_ioctl(xid
, tcon
, cfile
->fid
.persistent_fid
,
1890 cfile
->fid
.volatile_fid
, FSCTL_SET_SPARSE
,
1892 &setsparse
, 1, CIFSMaxBufSize
, NULL
, NULL
);
1894 tcon
->broken_sparse_sup
= true;
1895 cifs_dbg(FYI
, "set sparse rc = %d\n", rc
);
1900 cifsi
->cifsAttrs
|= FILE_ATTRIBUTE_SPARSE_FILE
;
1902 cifsi
->cifsAttrs
&= (~FILE_ATTRIBUTE_SPARSE_FILE
);
1908 smb2_set_file_size(const unsigned int xid
, struct cifs_tcon
*tcon
,
1909 struct cifsFileInfo
*cfile
, __u64 size
, bool set_alloc
)
1911 __le64 eof
= cpu_to_le64(size
);
1912 struct inode
*inode
;
1915 * If extending file more than one page make sparse. Many Linux fs
1916 * make files sparse by default when extending via ftruncate
1918 inode
= d_inode(cfile
->dentry
);
1920 if (!set_alloc
&& (size
> inode
->i_size
+ 8192)) {
1921 __u8 set_sparse
= 1;
1923 /* whether set sparse succeeds or not, extend the file */
1924 smb2_set_sparse(xid
, tcon
, cfile
, inode
, set_sparse
);
1927 return SMB2_set_eof(xid
, tcon
, cfile
->fid
.persistent_fid
,
1928 cfile
->fid
.volatile_fid
, cfile
->pid
, &eof
);
1932 smb2_duplicate_extents(const unsigned int xid
,
1933 struct cifsFileInfo
*srcfile
,
1934 struct cifsFileInfo
*trgtfile
, u64 src_off
,
1935 u64 len
, u64 dest_off
)
1938 unsigned int ret_data_len
;
1939 struct duplicate_extents_to_file dup_ext_buf
;
1940 struct cifs_tcon
*tcon
= tlink_tcon(trgtfile
->tlink
);
1942 /* server fileays advertise duplicate extent support with this flag */
1943 if ((le32_to_cpu(tcon
->fsAttrInfo
.Attributes
) &
1944 FILE_SUPPORTS_BLOCK_REFCOUNTING
) == 0)
1947 dup_ext_buf
.VolatileFileHandle
= srcfile
->fid
.volatile_fid
;
1948 dup_ext_buf
.PersistentFileHandle
= srcfile
->fid
.persistent_fid
;
1949 dup_ext_buf
.SourceFileOffset
= cpu_to_le64(src_off
);
1950 dup_ext_buf
.TargetFileOffset
= cpu_to_le64(dest_off
);
1951 dup_ext_buf
.ByteCount
= cpu_to_le64(len
);
1952 cifs_dbg(FYI
, "Duplicate extents: src off %lld dst off %lld len %lld\n",
1953 src_off
, dest_off
, len
);
1955 rc
= smb2_set_file_size(xid
, tcon
, trgtfile
, dest_off
+ len
, false);
1957 goto duplicate_extents_out
;
1959 rc
= SMB2_ioctl(xid
, tcon
, trgtfile
->fid
.persistent_fid
,
1960 trgtfile
->fid
.volatile_fid
,
1961 FSCTL_DUPLICATE_EXTENTS_TO_FILE
,
1962 true /* is_fsctl */,
1963 (char *)&dup_ext_buf
,
1964 sizeof(struct duplicate_extents_to_file
),
1965 CIFSMaxBufSize
, NULL
,
1968 if (ret_data_len
> 0)
1969 cifs_dbg(FYI
, "Non-zero response length in duplicate extents\n");
1971 duplicate_extents_out
:
1976 smb2_set_compression(const unsigned int xid
, struct cifs_tcon
*tcon
,
1977 struct cifsFileInfo
*cfile
)
1979 return SMB2_set_compression(xid
, tcon
, cfile
->fid
.persistent_fid
,
1980 cfile
->fid
.volatile_fid
);
1984 smb3_set_integrity(const unsigned int xid
, struct cifs_tcon
*tcon
,
1985 struct cifsFileInfo
*cfile
)
1987 struct fsctl_set_integrity_information_req integr_info
;
1988 unsigned int ret_data_len
;
1990 integr_info
.ChecksumAlgorithm
= cpu_to_le16(CHECKSUM_TYPE_UNCHANGED
);
1991 integr_info
.Flags
= 0;
1992 integr_info
.Reserved
= 0;
1994 return SMB2_ioctl(xid
, tcon
, cfile
->fid
.persistent_fid
,
1995 cfile
->fid
.volatile_fid
,
1996 FSCTL_SET_INTEGRITY_INFORMATION
,
1997 true /* is_fsctl */,
1998 (char *)&integr_info
,
1999 sizeof(struct fsctl_set_integrity_information_req
),
2000 CIFSMaxBufSize
, NULL
,
2005 /* GMT Token is @GMT-YYYY.MM.DD-HH.MM.SS Unicode which is 48 bytes + null */
2006 #define GMT_TOKEN_SIZE 50
2008 #define MIN_SNAPSHOT_ARRAY_SIZE 16 /* See MS-SMB2 section 3.3.5.15.1 */
2011 * Input buffer contains (empty) struct smb_snapshot array with size filled in
2012 * For output see struct SRV_SNAPSHOT_ARRAY in MS-SMB2 section 2.2.32.2
2015 smb3_enum_snapshots(const unsigned int xid
, struct cifs_tcon
*tcon
,
2016 struct cifsFileInfo
*cfile
, void __user
*ioc_buf
)
2018 char *retbuf
= NULL
;
2019 unsigned int ret_data_len
= 0;
2021 u32 max_response_size
;
2022 struct smb_snapshot_array snapshot_in
;
2025 * On the first query to enumerate the list of snapshots available
2026 * for this volume the buffer begins with 0 (number of snapshots
2027 * which can be returned is zero since at that point we do not know
2028 * how big the buffer needs to be). On the second query,
2029 * it (ret_data_len) is set to number of snapshots so we can
2030 * know to set the maximum response size larger (see below).
2032 if (get_user(ret_data_len
, (unsigned int __user
*)ioc_buf
))
2036 * Note that for snapshot queries that servers like Azure expect that
2037 * the first query be minimal size (and just used to get the number/size
2038 * of previous versions) so response size must be specified as EXACTLY
2039 * sizeof(struct snapshot_array) which is 16 when rounded up to multiple
2042 if (ret_data_len
== 0)
2043 max_response_size
= MIN_SNAPSHOT_ARRAY_SIZE
;
2045 max_response_size
= CIFSMaxBufSize
;
2047 rc
= SMB2_ioctl(xid
, tcon
, cfile
->fid
.persistent_fid
,
2048 cfile
->fid
.volatile_fid
,
2049 FSCTL_SRV_ENUMERATE_SNAPSHOTS
,
2050 true /* is_fsctl */,
2051 NULL
, 0 /* no input data */, max_response_size
,
2054 cifs_dbg(FYI
, "enum snaphots ioctl returned %d and ret buflen is %d\n",
2059 if (ret_data_len
&& (ioc_buf
!= NULL
) && (retbuf
!= NULL
)) {
2061 if (copy_from_user(&snapshot_in
, ioc_buf
,
2062 sizeof(struct smb_snapshot_array
))) {
2069 * Check for min size, ie not large enough to fit even one GMT
2070 * token (snapshot). On the first ioctl some users may pass in
2071 * smaller size (or zero) to simply get the size of the array
2072 * so the user space caller can allocate sufficient memory
2073 * and retry the ioctl again with larger array size sufficient
2074 * to hold all of the snapshot GMT tokens on the second try.
2076 if (snapshot_in
.snapshot_array_size
< GMT_TOKEN_SIZE
)
2077 ret_data_len
= sizeof(struct smb_snapshot_array
);
2080 * We return struct SRV_SNAPSHOT_ARRAY, followed by
2081 * the snapshot array (of 50 byte GMT tokens) each
2082 * representing an available previous version of the data
2084 if (ret_data_len
> (snapshot_in
.snapshot_array_size
+
2085 sizeof(struct smb_snapshot_array
)))
2086 ret_data_len
= snapshot_in
.snapshot_array_size
+
2087 sizeof(struct smb_snapshot_array
);
2089 if (copy_to_user(ioc_buf
, retbuf
, ret_data_len
))
2100 smb3_notify(const unsigned int xid
, struct file
*pfile
,
2101 void __user
*ioc_buf
)
2103 struct smb3_notify notify
;
2104 struct dentry
*dentry
= pfile
->f_path
.dentry
;
2105 struct inode
*inode
= file_inode(pfile
);
2106 struct cifs_sb_info
*cifs_sb
;
2107 struct cifs_open_parms oparms
;
2108 struct cifs_fid fid
;
2109 struct cifs_tcon
*tcon
;
2110 unsigned char *path
= NULL
;
2111 __le16
*utf16_path
= NULL
;
2112 u8 oplock
= SMB2_OPLOCK_LEVEL_NONE
;
2115 path
= build_path_from_dentry(dentry
);
2119 cifs_sb
= CIFS_SB(inode
->i_sb
);
2121 utf16_path
= cifs_convert_path_to_utf16(path
+ 1, cifs_sb
);
2122 if (utf16_path
== NULL
) {
2127 if (copy_from_user(¬ify
, ioc_buf
, sizeof(struct smb3_notify
))) {
2132 tcon
= cifs_sb_master_tcon(cifs_sb
);
2134 oparms
.desired_access
= FILE_READ_ATTRIBUTES
;
2135 oparms
.disposition
= FILE_OPEN
;
2136 oparms
.create_options
= cifs_create_options(cifs_sb
, 0);
2138 oparms
.reconnect
= false;
2140 rc
= SMB2_open(xid
, &oparms
, utf16_path
, &oplock
, NULL
, NULL
, NULL
,
2145 rc
= SMB2_change_notify(xid
, tcon
, fid
.persistent_fid
, fid
.volatile_fid
,
2146 notify
.watch_tree
, notify
.completion_filter
);
2148 SMB2_close(xid
, tcon
, fid
.persistent_fid
, fid
.volatile_fid
);
2150 cifs_dbg(FYI
, "change notify for path %s rc %d\n", path
, rc
);
2159 smb2_query_dir_first(const unsigned int xid
, struct cifs_tcon
*tcon
,
2160 const char *path
, struct cifs_sb_info
*cifs_sb
,
2161 struct cifs_fid
*fid
, __u16 search_flags
,
2162 struct cifs_search_info
*srch_inf
)
2165 struct smb_rqst rqst
[2];
2166 struct kvec rsp_iov
[2];
2167 int resp_buftype
[2];
2168 struct kvec open_iov
[SMB2_CREATE_IOV_SIZE
];
2169 struct kvec qd_iov
[SMB2_QUERY_DIRECTORY_IOV_SIZE
];
2171 u8 oplock
= SMB2_OPLOCK_LEVEL_NONE
;
2172 struct cifs_open_parms oparms
;
2173 struct smb2_query_directory_rsp
*qd_rsp
= NULL
;
2174 struct smb2_create_rsp
*op_rsp
= NULL
;
2176 utf16_path
= cifs_convert_path_to_utf16(path
, cifs_sb
);
2180 if (smb3_encryption_required(tcon
))
2181 flags
|= CIFS_TRANSFORM_REQ
;
2183 memset(rqst
, 0, sizeof(rqst
));
2184 resp_buftype
[0] = resp_buftype
[1] = CIFS_NO_BUFFER
;
2185 memset(rsp_iov
, 0, sizeof(rsp_iov
));
2188 memset(&open_iov
, 0, sizeof(open_iov
));
2189 rqst
[0].rq_iov
= open_iov
;
2190 rqst
[0].rq_nvec
= SMB2_CREATE_IOV_SIZE
;
2193 oparms
.desired_access
= FILE_READ_ATTRIBUTES
| FILE_READ_DATA
;
2194 oparms
.disposition
= FILE_OPEN
;
2195 oparms
.create_options
= cifs_create_options(cifs_sb
, 0);
2197 oparms
.reconnect
= false;
2199 rc
= SMB2_open_init(tcon
, &rqst
[0], &oplock
, &oparms
, utf16_path
);
2202 smb2_set_next_command(tcon
, &rqst
[0]);
2204 /* Query directory */
2205 srch_inf
->entries_in_buffer
= 0;
2206 srch_inf
->index_of_last_entry
= 2;
2208 memset(&qd_iov
, 0, sizeof(qd_iov
));
2209 rqst
[1].rq_iov
= qd_iov
;
2210 rqst
[1].rq_nvec
= SMB2_QUERY_DIRECTORY_IOV_SIZE
;
2212 rc
= SMB2_query_directory_init(xid
, tcon
, &rqst
[1],
2213 COMPOUND_FID
, COMPOUND_FID
,
2214 0, srch_inf
->info_level
);
2218 smb2_set_related(&rqst
[1]);
2220 rc
= compound_send_recv(xid
, tcon
->ses
, flags
, 2, rqst
,
2221 resp_buftype
, rsp_iov
);
2223 /* If the open failed there is nothing to do */
2224 op_rsp
= (struct smb2_create_rsp
*)rsp_iov
[0].iov_base
;
2225 if (op_rsp
== NULL
|| op_rsp
->sync_hdr
.Status
!= STATUS_SUCCESS
) {
2226 cifs_dbg(FYI
, "query_dir_first: open failed rc=%d\n", rc
);
2229 fid
->persistent_fid
= op_rsp
->PersistentFileId
;
2230 fid
->volatile_fid
= op_rsp
->VolatileFileId
;
2232 /* Anything else than ENODATA means a genuine error */
2233 if (rc
&& rc
!= -ENODATA
) {
2234 SMB2_close(xid
, tcon
, fid
->persistent_fid
, fid
->volatile_fid
);
2235 cifs_dbg(FYI
, "query_dir_first: query directory failed rc=%d\n", rc
);
2236 trace_smb3_query_dir_err(xid
, fid
->persistent_fid
,
2237 tcon
->tid
, tcon
->ses
->Suid
, 0, 0, rc
);
2241 atomic_inc(&tcon
->num_remote_opens
);
2243 qd_rsp
= (struct smb2_query_directory_rsp
*)rsp_iov
[1].iov_base
;
2244 if (qd_rsp
->sync_hdr
.Status
== STATUS_NO_MORE_FILES
) {
2245 trace_smb3_query_dir_done(xid
, fid
->persistent_fid
,
2246 tcon
->tid
, tcon
->ses
->Suid
, 0, 0);
2247 srch_inf
->endOfSearch
= true;
2252 rc
= smb2_parse_query_directory(tcon
, &rsp_iov
[1], resp_buftype
[1],
2255 trace_smb3_query_dir_err(xid
, fid
->persistent_fid
, tcon
->tid
,
2256 tcon
->ses
->Suid
, 0, 0, rc
);
2259 resp_buftype
[1] = CIFS_NO_BUFFER
;
2261 trace_smb3_query_dir_done(xid
, fid
->persistent_fid
, tcon
->tid
,
2262 tcon
->ses
->Suid
, 0, srch_inf
->entries_in_buffer
);
2266 SMB2_open_free(&rqst
[0]);
2267 SMB2_query_directory_free(&rqst
[1]);
2268 free_rsp_buf(resp_buftype
[0], rsp_iov
[0].iov_base
);
2269 free_rsp_buf(resp_buftype
[1], rsp_iov
[1].iov_base
);
2274 smb2_query_dir_next(const unsigned int xid
, struct cifs_tcon
*tcon
,
2275 struct cifs_fid
*fid
, __u16 search_flags
,
2276 struct cifs_search_info
*srch_inf
)
2278 return SMB2_query_directory(xid
, tcon
, fid
->persistent_fid
,
2279 fid
->volatile_fid
, 0, srch_inf
);
2283 smb2_close_dir(const unsigned int xid
, struct cifs_tcon
*tcon
,
2284 struct cifs_fid
*fid
)
2286 return SMB2_close(xid
, tcon
, fid
->persistent_fid
, fid
->volatile_fid
);
2290 * If we negotiate SMB2 protocol and get STATUS_PENDING - update
2291 * the number of credits and return true. Otherwise - return false.
2294 smb2_is_status_pending(char *buf
, struct TCP_Server_Info
*server
)
2296 struct smb2_sync_hdr
*shdr
= (struct smb2_sync_hdr
*)buf
;
2298 if (shdr
->Status
!= STATUS_PENDING
)
2301 if (shdr
->CreditRequest
) {
2302 spin_lock(&server
->req_lock
);
2303 server
->credits
+= le16_to_cpu(shdr
->CreditRequest
);
2304 spin_unlock(&server
->req_lock
);
2305 wake_up(&server
->request_q
);
2312 smb2_is_session_expired(char *buf
)
2314 struct smb2_sync_hdr
*shdr
= (struct smb2_sync_hdr
*)buf
;
2316 if (shdr
->Status
!= STATUS_NETWORK_SESSION_EXPIRED
&&
2317 shdr
->Status
!= STATUS_USER_SESSION_DELETED
)
2320 trace_smb3_ses_expired(shdr
->TreeId
, shdr
->SessionId
,
2321 le16_to_cpu(shdr
->Command
),
2322 le64_to_cpu(shdr
->MessageId
));
2323 cifs_dbg(FYI
, "Session expired or deleted\n");
2329 smb2_oplock_response(struct cifs_tcon
*tcon
, struct cifs_fid
*fid
,
2330 struct cifsInodeInfo
*cinode
)
2332 if (tcon
->ses
->server
->capabilities
& SMB2_GLOBAL_CAP_LEASING
)
2333 return SMB2_lease_break(0, tcon
, cinode
->lease_key
,
2334 smb2_get_lease_state(cinode
));
2336 return SMB2_oplock_break(0, tcon
, fid
->persistent_fid
,
2338 CIFS_CACHE_READ(cinode
) ? 1 : 0);
2342 smb2_set_related(struct smb_rqst
*rqst
)
2344 struct smb2_sync_hdr
*shdr
;
2346 shdr
= (struct smb2_sync_hdr
*)(rqst
->rq_iov
[0].iov_base
);
2348 cifs_dbg(FYI
, "shdr NULL in smb2_set_related\n");
2351 shdr
->Flags
|= SMB2_FLAGS_RELATED_OPERATIONS
;
2354 char smb2_padding
[7] = {0, 0, 0, 0, 0, 0, 0};
2357 smb2_set_next_command(struct cifs_tcon
*tcon
, struct smb_rqst
*rqst
)
2359 struct smb2_sync_hdr
*shdr
;
2360 struct cifs_ses
*ses
= tcon
->ses
;
2361 struct TCP_Server_Info
*server
= ses
->server
;
2362 unsigned long len
= smb_rqst_len(server
, rqst
);
2365 shdr
= (struct smb2_sync_hdr
*)(rqst
->rq_iov
[0].iov_base
);
2367 cifs_dbg(FYI
, "shdr NULL in smb2_set_next_command\n");
2371 /* SMB headers in a compound are 8 byte aligned. */
2373 /* No padding needed */
2377 num_padding
= 8 - (len
& 7);
2378 if (!smb3_encryption_required(tcon
)) {
2380 * If we do not have encryption then we can just add an extra
2381 * iov for the padding.
2383 rqst
->rq_iov
[rqst
->rq_nvec
].iov_base
= smb2_padding
;
2384 rqst
->rq_iov
[rqst
->rq_nvec
].iov_len
= num_padding
;
2389 * We can not add a small padding iov for the encryption case
2390 * because the encryption framework can not handle the padding
2392 * We have to flatten this into a single buffer and add
2393 * the padding to it.
2395 for (i
= 1; i
< rqst
->rq_nvec
; i
++) {
2396 memcpy(rqst
->rq_iov
[0].iov_base
+
2397 rqst
->rq_iov
[0].iov_len
,
2398 rqst
->rq_iov
[i
].iov_base
,
2399 rqst
->rq_iov
[i
].iov_len
);
2400 rqst
->rq_iov
[0].iov_len
+= rqst
->rq_iov
[i
].iov_len
;
2402 memset(rqst
->rq_iov
[0].iov_base
+ rqst
->rq_iov
[0].iov_len
,
2404 rqst
->rq_iov
[0].iov_len
+= num_padding
;
2410 shdr
->NextCommand
= cpu_to_le32(len
);
2414 * Passes the query info response back to the caller on success.
2415 * Caller need to free this with free_rsp_buf().
2418 smb2_query_info_compound(const unsigned int xid
, struct cifs_tcon
*tcon
,
2419 __le16
*utf16_path
, u32 desired_access
,
2420 u32
class, u32 type
, u32 output_len
,
2421 struct kvec
*rsp
, int *buftype
,
2422 struct cifs_sb_info
*cifs_sb
)
2424 struct cifs_ses
*ses
= tcon
->ses
;
2426 struct smb_rqst rqst
[3];
2427 int resp_buftype
[3];
2428 struct kvec rsp_iov
[3];
2429 struct kvec open_iov
[SMB2_CREATE_IOV_SIZE
];
2430 struct kvec qi_iov
[1];
2431 struct kvec close_iov
[1];
2432 u8 oplock
= SMB2_OPLOCK_LEVEL_NONE
;
2433 struct cifs_open_parms oparms
;
2434 struct cifs_fid fid
;
2437 if (smb3_encryption_required(tcon
))
2438 flags
|= CIFS_TRANSFORM_REQ
;
2440 memset(rqst
, 0, sizeof(rqst
));
2441 resp_buftype
[0] = resp_buftype
[1] = resp_buftype
[2] = CIFS_NO_BUFFER
;
2442 memset(rsp_iov
, 0, sizeof(rsp_iov
));
2444 memset(&open_iov
, 0, sizeof(open_iov
));
2445 rqst
[0].rq_iov
= open_iov
;
2446 rqst
[0].rq_nvec
= SMB2_CREATE_IOV_SIZE
;
2449 oparms
.desired_access
= desired_access
;
2450 oparms
.disposition
= FILE_OPEN
;
2451 oparms
.create_options
= cifs_create_options(cifs_sb
, 0);
2453 oparms
.reconnect
= false;
2455 rc
= SMB2_open_init(tcon
, &rqst
[0], &oplock
, &oparms
, utf16_path
);
2458 smb2_set_next_command(tcon
, &rqst
[0]);
2460 memset(&qi_iov
, 0, sizeof(qi_iov
));
2461 rqst
[1].rq_iov
= qi_iov
;
2462 rqst
[1].rq_nvec
= 1;
2464 rc
= SMB2_query_info_init(tcon
, &rqst
[1], COMPOUND_FID
, COMPOUND_FID
,
2470 smb2_set_next_command(tcon
, &rqst
[1]);
2471 smb2_set_related(&rqst
[1]);
2473 memset(&close_iov
, 0, sizeof(close_iov
));
2474 rqst
[2].rq_iov
= close_iov
;
2475 rqst
[2].rq_nvec
= 1;
2477 rc
= SMB2_close_init(tcon
, &rqst
[2], COMPOUND_FID
, COMPOUND_FID
, false);
2480 smb2_set_related(&rqst
[2]);
2482 rc
= compound_send_recv(xid
, ses
, flags
, 3, rqst
,
2483 resp_buftype
, rsp_iov
);
2485 free_rsp_buf(resp_buftype
[1], rsp_iov
[1].iov_base
);
2486 if (rc
== -EREMCHG
) {
2487 tcon
->need_reconnect
= true;
2488 pr_warn_once("server share %s deleted\n",
2494 *buftype
= resp_buftype
[1];
2497 SMB2_open_free(&rqst
[0]);
2498 SMB2_query_info_free(&rqst
[1]);
2499 SMB2_close_free(&rqst
[2]);
2500 free_rsp_buf(resp_buftype
[0], rsp_iov
[0].iov_base
);
2501 free_rsp_buf(resp_buftype
[2], rsp_iov
[2].iov_base
);
2506 smb2_queryfs(const unsigned int xid
, struct cifs_tcon
*tcon
,
2507 struct cifs_sb_info
*cifs_sb
, struct kstatfs
*buf
)
2509 struct smb2_query_info_rsp
*rsp
;
2510 struct smb2_fs_full_size_info
*info
= NULL
;
2511 __le16 utf16_path
= 0; /* Null - open root of share */
2512 struct kvec rsp_iov
= {NULL
, 0};
2513 int buftype
= CIFS_NO_BUFFER
;
2517 rc
= smb2_query_info_compound(xid
, tcon
, &utf16_path
,
2518 FILE_READ_ATTRIBUTES
,
2519 FS_FULL_SIZE_INFORMATION
,
2520 SMB2_O_INFO_FILESYSTEM
,
2521 sizeof(struct smb2_fs_full_size_info
),
2522 &rsp_iov
, &buftype
, cifs_sb
);
2526 rsp
= (struct smb2_query_info_rsp
*)rsp_iov
.iov_base
;
2527 buf
->f_type
= SMB2_MAGIC_NUMBER
;
2528 info
= (struct smb2_fs_full_size_info
*)(
2529 le16_to_cpu(rsp
->OutputBufferOffset
) + (char *)rsp
);
2530 rc
= smb2_validate_iov(le16_to_cpu(rsp
->OutputBufferOffset
),
2531 le32_to_cpu(rsp
->OutputBufferLength
),
2533 sizeof(struct smb2_fs_full_size_info
));
2535 smb2_copy_fs_info_to_kstatfs(info
, buf
);
2538 free_rsp_buf(buftype
, rsp_iov
.iov_base
);
2543 smb311_queryfs(const unsigned int xid
, struct cifs_tcon
*tcon
,
2544 struct cifs_sb_info
*cifs_sb
, struct kstatfs
*buf
)
2547 __le16 srch_path
= 0; /* Null - open root of share */
2548 u8 oplock
= SMB2_OPLOCK_LEVEL_NONE
;
2549 struct cifs_open_parms oparms
;
2550 struct cifs_fid fid
;
2552 if (!tcon
->posix_extensions
)
2553 return smb2_queryfs(xid
, tcon
, cifs_sb
, buf
);
2556 oparms
.desired_access
= FILE_READ_ATTRIBUTES
;
2557 oparms
.disposition
= FILE_OPEN
;
2558 oparms
.create_options
= cifs_create_options(cifs_sb
, 0);
2560 oparms
.reconnect
= false;
2562 rc
= SMB2_open(xid
, &oparms
, &srch_path
, &oplock
, NULL
, NULL
,
2567 rc
= SMB311_posix_qfs_info(xid
, tcon
, fid
.persistent_fid
,
2568 fid
.volatile_fid
, buf
);
2569 buf
->f_type
= SMB2_MAGIC_NUMBER
;
2570 SMB2_close(xid
, tcon
, fid
.persistent_fid
, fid
.volatile_fid
);
2575 smb2_compare_fids(struct cifsFileInfo
*ob1
, struct cifsFileInfo
*ob2
)
2577 return ob1
->fid
.persistent_fid
== ob2
->fid
.persistent_fid
&&
2578 ob1
->fid
.volatile_fid
== ob2
->fid
.volatile_fid
;
2582 smb2_mand_lock(const unsigned int xid
, struct cifsFileInfo
*cfile
, __u64 offset
,
2583 __u64 length
, __u32 type
, int lock
, int unlock
, bool wait
)
2585 if (unlock
&& !lock
)
2586 type
= SMB2_LOCKFLAG_UNLOCK
;
2587 return SMB2_lock(xid
, tlink_tcon(cfile
->tlink
),
2588 cfile
->fid
.persistent_fid
, cfile
->fid
.volatile_fid
,
2589 current
->tgid
, length
, offset
, type
, wait
);
2593 smb2_get_lease_key(struct inode
*inode
, struct cifs_fid
*fid
)
2595 memcpy(fid
->lease_key
, CIFS_I(inode
)->lease_key
, SMB2_LEASE_KEY_SIZE
);
2599 smb2_set_lease_key(struct inode
*inode
, struct cifs_fid
*fid
)
2601 memcpy(CIFS_I(inode
)->lease_key
, fid
->lease_key
, SMB2_LEASE_KEY_SIZE
);
2605 smb2_new_lease_key(struct cifs_fid
*fid
)
2607 generate_random_uuid(fid
->lease_key
);
2611 smb2_get_dfs_refer(const unsigned int xid
, struct cifs_ses
*ses
,
2612 const char *search_name
,
2613 struct dfs_info3_param
**target_nodes
,
2614 unsigned int *num_of_nodes
,
2615 const struct nls_table
*nls_codepage
, int remap
)
2618 __le16
*utf16_path
= NULL
;
2619 int utf16_path_len
= 0;
2620 struct cifs_tcon
*tcon
;
2621 struct fsctl_get_dfs_referral_req
*dfs_req
= NULL
;
2622 struct get_dfs_referral_rsp
*dfs_rsp
= NULL
;
2623 u32 dfs_req_size
= 0, dfs_rsp_size
= 0;
2625 cifs_dbg(FYI
, "%s: path: %s\n", __func__
, search_name
);
2628 * Try to use the IPC tcon, otherwise just use any
2630 tcon
= ses
->tcon_ipc
;
2632 spin_lock(&cifs_tcp_ses_lock
);
2633 tcon
= list_first_entry_or_null(&ses
->tcon_list
,
2638 spin_unlock(&cifs_tcp_ses_lock
);
2642 cifs_dbg(VFS
, "session %p has no tcon available for a dfs referral request\n",
2648 utf16_path
= cifs_strndup_to_utf16(search_name
, PATH_MAX
,
2650 nls_codepage
, remap
);
2656 dfs_req_size
= sizeof(*dfs_req
) + utf16_path_len
;
2657 dfs_req
= kzalloc(dfs_req_size
, GFP_KERNEL
);
2663 /* Highest DFS referral version understood */
2664 dfs_req
->MaxReferralLevel
= DFS_VERSION
;
2666 /* Path to resolve in an UTF-16 null-terminated string */
2667 memcpy(dfs_req
->RequestFileName
, utf16_path
, utf16_path_len
);
2670 rc
= SMB2_ioctl(xid
, tcon
, NO_FILE_ID
, NO_FILE_ID
,
2671 FSCTL_DFS_GET_REFERRALS
,
2672 true /* is_fsctl */,
2673 (char *)dfs_req
, dfs_req_size
, CIFSMaxBufSize
,
2674 (char **)&dfs_rsp
, &dfs_rsp_size
);
2675 } while (rc
== -EAGAIN
);
2678 if ((rc
!= -ENOENT
) && (rc
!= -EOPNOTSUPP
))
2679 cifs_tcon_dbg(VFS
, "ioctl error in %s rc=%d\n", __func__
, rc
);
2683 rc
= parse_dfs_referrals(dfs_rsp
, dfs_rsp_size
,
2684 num_of_nodes
, target_nodes
,
2685 nls_codepage
, remap
, search_name
,
2686 true /* is_unicode */);
2688 cifs_tcon_dbg(VFS
, "parse error in %s rc=%d\n", __func__
, rc
);
2693 if (tcon
&& !tcon
->ipc
) {
2694 /* ipc tcons are not refcounted */
2695 spin_lock(&cifs_tcp_ses_lock
);
2697 spin_unlock(&cifs_tcp_ses_lock
);
2706 parse_reparse_posix(struct reparse_posix_data
*symlink_buf
,
2707 u32 plen
, char **target_path
,
2708 struct cifs_sb_info
*cifs_sb
)
2712 /* See MS-FSCC 2.1.2.6 for the 'NFS' style reparse tags */
2713 len
= le16_to_cpu(symlink_buf
->ReparseDataLength
);
2715 if (le64_to_cpu(symlink_buf
->InodeType
) != NFS_SPECFILE_LNK
) {
2716 cifs_dbg(VFS
, "%lld not a supported symlink type\n",
2717 le64_to_cpu(symlink_buf
->InodeType
));
2721 *target_path
= cifs_strndup_from_utf16(
2722 symlink_buf
->PathBuffer
,
2723 len
, true, cifs_sb
->local_nls
);
2724 if (!(*target_path
))
2727 convert_delimiter(*target_path
, '/');
2728 cifs_dbg(FYI
, "%s: target path: %s\n", __func__
, *target_path
);
2734 parse_reparse_symlink(struct reparse_symlink_data_buffer
*symlink_buf
,
2735 u32 plen
, char **target_path
,
2736 struct cifs_sb_info
*cifs_sb
)
2738 unsigned int sub_len
;
2739 unsigned int sub_offset
;
2741 /* We handle Symbolic Link reparse tag here. See: MS-FSCC 2.1.2.4 */
2743 sub_offset
= le16_to_cpu(symlink_buf
->SubstituteNameOffset
);
2744 sub_len
= le16_to_cpu(symlink_buf
->SubstituteNameLength
);
2745 if (sub_offset
+ 20 > plen
||
2746 sub_offset
+ sub_len
+ 20 > plen
) {
2747 cifs_dbg(VFS
, "srv returned malformed symlink buffer\n");
2751 *target_path
= cifs_strndup_from_utf16(
2752 symlink_buf
->PathBuffer
+ sub_offset
,
2753 sub_len
, true, cifs_sb
->local_nls
);
2754 if (!(*target_path
))
2757 convert_delimiter(*target_path
, '/');
2758 cifs_dbg(FYI
, "%s: target path: %s\n", __func__
, *target_path
);
2764 parse_reparse_point(struct reparse_data_buffer
*buf
,
2765 u32 plen
, char **target_path
,
2766 struct cifs_sb_info
*cifs_sb
)
2768 if (plen
< sizeof(struct reparse_data_buffer
)) {
2769 cifs_dbg(VFS
, "reparse buffer is too small. Must be at least 8 bytes but was %d\n",
2774 if (plen
< le16_to_cpu(buf
->ReparseDataLength
) +
2775 sizeof(struct reparse_data_buffer
)) {
2776 cifs_dbg(VFS
, "srv returned invalid reparse buf length: %d\n",
2781 /* See MS-FSCC 2.1.2 */
2782 switch (le32_to_cpu(buf
->ReparseTag
)) {
2783 case IO_REPARSE_TAG_NFS
:
2784 return parse_reparse_posix(
2785 (struct reparse_posix_data
*)buf
,
2786 plen
, target_path
, cifs_sb
);
2787 case IO_REPARSE_TAG_SYMLINK
:
2788 return parse_reparse_symlink(
2789 (struct reparse_symlink_data_buffer
*)buf
,
2790 plen
, target_path
, cifs_sb
);
2792 cifs_dbg(VFS
, "srv returned unknown symlink buffer tag:0x%08x\n",
2793 le32_to_cpu(buf
->ReparseTag
));
2798 #define SMB2_SYMLINK_STRUCT_SIZE \
2799 (sizeof(struct smb2_err_rsp) - 1 + sizeof(struct smb2_symlink_err_rsp))
2802 smb2_query_symlink(const unsigned int xid
, struct cifs_tcon
*tcon
,
2803 struct cifs_sb_info
*cifs_sb
, const char *full_path
,
2804 char **target_path
, bool is_reparse_point
)
2807 __le16
*utf16_path
= NULL
;
2808 __u8 oplock
= SMB2_OPLOCK_LEVEL_NONE
;
2809 struct cifs_open_parms oparms
;
2810 struct cifs_fid fid
;
2811 struct kvec err_iov
= {NULL
, 0};
2812 struct smb2_err_rsp
*err_buf
= NULL
;
2813 struct smb2_symlink_err_rsp
*symlink
;
2814 unsigned int sub_len
;
2815 unsigned int sub_offset
;
2816 unsigned int print_len
;
2817 unsigned int print_offset
;
2819 struct smb_rqst rqst
[3];
2820 int resp_buftype
[3];
2821 struct kvec rsp_iov
[3];
2822 struct kvec open_iov
[SMB2_CREATE_IOV_SIZE
];
2823 struct kvec io_iov
[SMB2_IOCTL_IOV_SIZE
];
2824 struct kvec close_iov
[1];
2825 struct smb2_create_rsp
*create_rsp
;
2826 struct smb2_ioctl_rsp
*ioctl_rsp
;
2827 struct reparse_data_buffer
*reparse_buf
;
2828 int create_options
= is_reparse_point
? OPEN_REPARSE_POINT
: 0;
2831 cifs_dbg(FYI
, "%s: path: %s\n", __func__
, full_path
);
2833 *target_path
= NULL
;
2835 if (smb3_encryption_required(tcon
))
2836 flags
|= CIFS_TRANSFORM_REQ
;
2838 memset(rqst
, 0, sizeof(rqst
));
2839 resp_buftype
[0] = resp_buftype
[1] = resp_buftype
[2] = CIFS_NO_BUFFER
;
2840 memset(rsp_iov
, 0, sizeof(rsp_iov
));
2842 utf16_path
= cifs_convert_path_to_utf16(full_path
, cifs_sb
);
2847 memset(&open_iov
, 0, sizeof(open_iov
));
2848 rqst
[0].rq_iov
= open_iov
;
2849 rqst
[0].rq_nvec
= SMB2_CREATE_IOV_SIZE
;
2851 memset(&oparms
, 0, sizeof(oparms
));
2853 oparms
.desired_access
= FILE_READ_ATTRIBUTES
;
2854 oparms
.disposition
= FILE_OPEN
;
2855 oparms
.create_options
= cifs_create_options(cifs_sb
, create_options
);
2857 oparms
.reconnect
= false;
2859 rc
= SMB2_open_init(tcon
, &rqst
[0], &oplock
, &oparms
, utf16_path
);
2862 smb2_set_next_command(tcon
, &rqst
[0]);
2866 memset(&io_iov
, 0, sizeof(io_iov
));
2867 rqst
[1].rq_iov
= io_iov
;
2868 rqst
[1].rq_nvec
= SMB2_IOCTL_IOV_SIZE
;
2870 rc
= SMB2_ioctl_init(tcon
, &rqst
[1], fid
.persistent_fid
,
2871 fid
.volatile_fid
, FSCTL_GET_REPARSE_POINT
,
2872 true /* is_fctl */, NULL
, 0,
2874 MAX_SMB2_CREATE_RESPONSE_SIZE
-
2875 MAX_SMB2_CLOSE_RESPONSE_SIZE
);
2879 smb2_set_next_command(tcon
, &rqst
[1]);
2880 smb2_set_related(&rqst
[1]);
2884 memset(&close_iov
, 0, sizeof(close_iov
));
2885 rqst
[2].rq_iov
= close_iov
;
2886 rqst
[2].rq_nvec
= 1;
2888 rc
= SMB2_close_init(tcon
, &rqst
[2], COMPOUND_FID
, COMPOUND_FID
, false);
2892 smb2_set_related(&rqst
[2]);
2894 rc
= compound_send_recv(xid
, tcon
->ses
, flags
, 3, rqst
,
2895 resp_buftype
, rsp_iov
);
2897 create_rsp
= rsp_iov
[0].iov_base
;
2898 if (create_rsp
&& create_rsp
->sync_hdr
.Status
)
2899 err_iov
= rsp_iov
[0];
2900 ioctl_rsp
= rsp_iov
[1].iov_base
;
2903 * Open was successful and we got an ioctl response.
2905 if ((rc
== 0) && (is_reparse_point
)) {
2906 /* See MS-FSCC 2.3.23 */
2908 reparse_buf
= (struct reparse_data_buffer
*)
2909 ((char *)ioctl_rsp
+
2910 le32_to_cpu(ioctl_rsp
->OutputOffset
));
2911 plen
= le32_to_cpu(ioctl_rsp
->OutputCount
);
2913 if (plen
+ le32_to_cpu(ioctl_rsp
->OutputOffset
) >
2914 rsp_iov
[1].iov_len
) {
2915 cifs_tcon_dbg(VFS
, "srv returned invalid ioctl len: %d\n",
2921 rc
= parse_reparse_point(reparse_buf
, plen
, target_path
,
2926 if (!rc
|| !err_iov
.iov_base
) {
2931 err_buf
= err_iov
.iov_base
;
2932 if (le32_to_cpu(err_buf
->ByteCount
) < sizeof(struct smb2_symlink_err_rsp
) ||
2933 err_iov
.iov_len
< SMB2_SYMLINK_STRUCT_SIZE
) {
2938 symlink
= (struct smb2_symlink_err_rsp
*)err_buf
->ErrorData
;
2939 if (le32_to_cpu(symlink
->SymLinkErrorTag
) != SYMLINK_ERROR_TAG
||
2940 le32_to_cpu(symlink
->ReparseTag
) != IO_REPARSE_TAG_SYMLINK
) {
2945 /* open must fail on symlink - reset rc */
2947 sub_len
= le16_to_cpu(symlink
->SubstituteNameLength
);
2948 sub_offset
= le16_to_cpu(symlink
->SubstituteNameOffset
);
2949 print_len
= le16_to_cpu(symlink
->PrintNameLength
);
2950 print_offset
= le16_to_cpu(symlink
->PrintNameOffset
);
2952 if (err_iov
.iov_len
< SMB2_SYMLINK_STRUCT_SIZE
+ sub_offset
+ sub_len
) {
2957 if (err_iov
.iov_len
<
2958 SMB2_SYMLINK_STRUCT_SIZE
+ print_offset
+ print_len
) {
2963 *target_path
= cifs_strndup_from_utf16(
2964 (char *)symlink
->PathBuffer
+ sub_offset
,
2965 sub_len
, true, cifs_sb
->local_nls
);
2966 if (!(*target_path
)) {
2970 convert_delimiter(*target_path
, '/');
2971 cifs_dbg(FYI
, "%s: target path: %s\n", __func__
, *target_path
);
2974 cifs_dbg(FYI
, "query symlink rc %d\n", rc
);
2976 SMB2_open_free(&rqst
[0]);
2977 SMB2_ioctl_free(&rqst
[1]);
2978 SMB2_close_free(&rqst
[2]);
2979 free_rsp_buf(resp_buftype
[0], rsp_iov
[0].iov_base
);
2980 free_rsp_buf(resp_buftype
[1], rsp_iov
[1].iov_base
);
2981 free_rsp_buf(resp_buftype
[2], rsp_iov
[2].iov_base
);
2985 static struct cifs_ntsd
*
2986 get_smb2_acl_by_fid(struct cifs_sb_info
*cifs_sb
,
2987 const struct cifs_fid
*cifsfid
, u32
*pacllen
)
2989 struct cifs_ntsd
*pntsd
= NULL
;
2991 int rc
= -EOPNOTSUPP
;
2992 struct tcon_link
*tlink
= cifs_sb_tlink(cifs_sb
);
2995 return ERR_CAST(tlink
);
2998 cifs_dbg(FYI
, "trying to get acl\n");
3000 rc
= SMB2_query_acl(xid
, tlink_tcon(tlink
), cifsfid
->persistent_fid
,
3001 cifsfid
->volatile_fid
, (void **)&pntsd
, pacllen
);
3004 cifs_put_tlink(tlink
);
3006 cifs_dbg(FYI
, "%s: rc = %d ACL len %d\n", __func__
, rc
, *pacllen
);
3013 static struct cifs_ntsd
*
3014 get_smb2_acl_by_path(struct cifs_sb_info
*cifs_sb
,
3015 const char *path
, u32
*pacllen
)
3017 struct cifs_ntsd
*pntsd
= NULL
;
3018 u8 oplock
= SMB2_OPLOCK_LEVEL_NONE
;
3021 struct cifs_tcon
*tcon
;
3022 struct tcon_link
*tlink
= cifs_sb_tlink(cifs_sb
);
3023 struct cifs_fid fid
;
3024 struct cifs_open_parms oparms
;
3027 cifs_dbg(FYI
, "get smb3 acl for path %s\n", path
);
3029 return ERR_CAST(tlink
);
3031 tcon
= tlink_tcon(tlink
);
3034 utf16_path
= cifs_convert_path_to_utf16(path
, cifs_sb
);
3042 oparms
.desired_access
= READ_CONTROL
;
3043 oparms
.disposition
= FILE_OPEN
;
3044 oparms
.create_options
= cifs_create_options(cifs_sb
, 0);
3046 oparms
.reconnect
= false;
3048 rc
= SMB2_open(xid
, &oparms
, utf16_path
, &oplock
, NULL
, NULL
, NULL
,
3052 rc
= SMB2_query_acl(xid
, tlink_tcon(tlink
), fid
.persistent_fid
,
3053 fid
.volatile_fid
, (void **)&pntsd
, pacllen
);
3054 SMB2_close(xid
, tcon
, fid
.persistent_fid
, fid
.volatile_fid
);
3057 cifs_put_tlink(tlink
);
3060 cifs_dbg(FYI
, "%s: rc = %d ACL len %d\n", __func__
, rc
, *pacllen
);
3067 set_smb2_acl(struct cifs_ntsd
*pnntsd
, __u32 acllen
,
3068 struct inode
*inode
, const char *path
, int aclflag
)
3070 u8 oplock
= SMB2_OPLOCK_LEVEL_NONE
;
3072 int rc
, access_flags
= 0;
3073 struct cifs_tcon
*tcon
;
3074 struct cifs_sb_info
*cifs_sb
= CIFS_SB(inode
->i_sb
);
3075 struct tcon_link
*tlink
= cifs_sb_tlink(cifs_sb
);
3076 struct cifs_fid fid
;
3077 struct cifs_open_parms oparms
;
3080 cifs_dbg(FYI
, "set smb3 acl for path %s\n", path
);
3082 return PTR_ERR(tlink
);
3084 tcon
= tlink_tcon(tlink
);
3087 if (aclflag
== CIFS_ACL_OWNER
|| aclflag
== CIFS_ACL_GROUP
)
3088 access_flags
= WRITE_OWNER
;
3090 access_flags
= WRITE_DAC
;
3092 utf16_path
= cifs_convert_path_to_utf16(path
, cifs_sb
);
3100 oparms
.desired_access
= access_flags
;
3101 oparms
.create_options
= cifs_create_options(cifs_sb
, 0);
3102 oparms
.disposition
= FILE_OPEN
;
3105 oparms
.reconnect
= false;
3107 rc
= SMB2_open(xid
, &oparms
, utf16_path
, &oplock
, NULL
, NULL
,
3111 rc
= SMB2_set_acl(xid
, tlink_tcon(tlink
), fid
.persistent_fid
,
3112 fid
.volatile_fid
, pnntsd
, acllen
, aclflag
);
3113 SMB2_close(xid
, tcon
, fid
.persistent_fid
, fid
.volatile_fid
);
3116 cifs_put_tlink(tlink
);
3121 /* Retrieve an ACL from the server */
3122 static struct cifs_ntsd
*
3123 get_smb2_acl(struct cifs_sb_info
*cifs_sb
,
3124 struct inode
*inode
, const char *path
,
3127 struct cifs_ntsd
*pntsd
= NULL
;
3128 struct cifsFileInfo
*open_file
= NULL
;
3131 open_file
= find_readable_file(CIFS_I(inode
), true);
3133 return get_smb2_acl_by_path(cifs_sb
, path
, pacllen
);
3135 pntsd
= get_smb2_acl_by_fid(cifs_sb
, &open_file
->fid
, pacllen
);
3136 cifsFileInfo_put(open_file
);
3140 static long smb3_zero_range(struct file
*file
, struct cifs_tcon
*tcon
,
3141 loff_t offset
, loff_t len
, bool keep_size
)
3143 struct cifs_ses
*ses
= tcon
->ses
;
3144 struct inode
*inode
;
3145 struct cifsInodeInfo
*cifsi
;
3146 struct cifsFileInfo
*cfile
= file
->private_data
;
3147 struct file_zero_data_information fsctl_buf
;
3154 inode
= d_inode(cfile
->dentry
);
3155 cifsi
= CIFS_I(inode
);
3157 trace_smb3_zero_enter(xid
, cfile
->fid
.persistent_fid
, tcon
->tid
,
3158 ses
->Suid
, offset
, len
);
3161 /* if file not oplocked can't be sure whether asking to extend size */
3162 if (!CIFS_CACHE_READ(cifsi
))
3163 if (keep_size
== false) {
3165 trace_smb3_zero_err(xid
, cfile
->fid
.persistent_fid
,
3166 tcon
->tid
, ses
->Suid
, offset
, len
, rc
);
3171 cifs_dbg(FYI
, "Offset %lld len %lld\n", offset
, len
);
3173 fsctl_buf
.FileOffset
= cpu_to_le64(offset
);
3174 fsctl_buf
.BeyondFinalZero
= cpu_to_le64(offset
+ len
);
3176 rc
= SMB2_ioctl(xid
, tcon
, cfile
->fid
.persistent_fid
,
3177 cfile
->fid
.volatile_fid
, FSCTL_SET_ZERO_DATA
, true,
3179 sizeof(struct file_zero_data_information
),
3182 goto zero_range_exit
;
3185 * do we also need to change the size of the file?
3187 if (keep_size
== false && i_size_read(inode
) < offset
+ len
) {
3188 eof
= cpu_to_le64(offset
+ len
);
3189 rc
= SMB2_set_eof(xid
, tcon
, cfile
->fid
.persistent_fid
,
3190 cfile
->fid
.volatile_fid
, cfile
->pid
, &eof
);
3196 trace_smb3_zero_err(xid
, cfile
->fid
.persistent_fid
, tcon
->tid
,
3197 ses
->Suid
, offset
, len
, rc
);
3199 trace_smb3_zero_done(xid
, cfile
->fid
.persistent_fid
, tcon
->tid
,
3200 ses
->Suid
, offset
, len
);
3204 static long smb3_punch_hole(struct file
*file
, struct cifs_tcon
*tcon
,
3205 loff_t offset
, loff_t len
)
3207 struct inode
*inode
;
3208 struct cifsFileInfo
*cfile
= file
->private_data
;
3209 struct file_zero_data_information fsctl_buf
;
3212 __u8 set_sparse
= 1;
3216 inode
= d_inode(cfile
->dentry
);
3218 /* Need to make file sparse, if not already, before freeing range. */
3219 /* Consider adding equivalent for compressed since it could also work */
3220 if (!smb2_set_sparse(xid
, tcon
, cfile
, inode
, set_sparse
)) {
3226 cifs_dbg(FYI
, "Offset %lld len %lld\n", offset
, len
);
3228 fsctl_buf
.FileOffset
= cpu_to_le64(offset
);
3229 fsctl_buf
.BeyondFinalZero
= cpu_to_le64(offset
+ len
);
3231 rc
= SMB2_ioctl(xid
, tcon
, cfile
->fid
.persistent_fid
,
3232 cfile
->fid
.volatile_fid
, FSCTL_SET_ZERO_DATA
,
3233 true /* is_fctl */, (char *)&fsctl_buf
,
3234 sizeof(struct file_zero_data_information
),
3235 CIFSMaxBufSize
, NULL
, NULL
);
3240 static long smb3_simple_falloc(struct file
*file
, struct cifs_tcon
*tcon
,
3241 loff_t off
, loff_t len
, bool keep_size
)
3243 struct inode
*inode
;
3244 struct cifsInodeInfo
*cifsi
;
3245 struct cifsFileInfo
*cfile
= file
->private_data
;
3246 long rc
= -EOPNOTSUPP
;
3252 inode
= d_inode(cfile
->dentry
);
3253 cifsi
= CIFS_I(inode
);
3255 trace_smb3_falloc_enter(xid
, cfile
->fid
.persistent_fid
, tcon
->tid
,
3256 tcon
->ses
->Suid
, off
, len
);
3257 /* if file not oplocked can't be sure whether asking to extend size */
3258 if (!CIFS_CACHE_READ(cifsi
))
3259 if (keep_size
== false) {
3260 trace_smb3_falloc_err(xid
, cfile
->fid
.persistent_fid
,
3261 tcon
->tid
, tcon
->ses
->Suid
, off
, len
, rc
);
3267 * Extending the file
3269 if ((keep_size
== false) && i_size_read(inode
) < off
+ len
) {
3270 rc
= inode_newsize_ok(inode
, off
+ len
);
3274 if ((cifsi
->cifsAttrs
& FILE_ATTRIBUTE_SPARSE_FILE
) == 0)
3275 smb2_set_sparse(xid
, tcon
, cfile
, inode
, false);
3277 eof
= cpu_to_le64(off
+ len
);
3278 rc
= SMB2_set_eof(xid
, tcon
, cfile
->fid
.persistent_fid
,
3279 cfile
->fid
.volatile_fid
, cfile
->pid
, &eof
);
3281 cifsi
->server_eof
= off
+ len
;
3282 cifs_setsize(inode
, off
+ len
);
3283 cifs_truncate_page(inode
->i_mapping
, inode
->i_size
);
3284 truncate_setsize(inode
, off
+ len
);
3290 * Files are non-sparse by default so falloc may be a no-op
3291 * Must check if file sparse. If not sparse, and since we are not
3292 * extending then no need to do anything since file already allocated
3294 if ((cifsi
->cifsAttrs
& FILE_ATTRIBUTE_SPARSE_FILE
) == 0) {
3299 if ((keep_size
== true) || (i_size_read(inode
) >= off
+ len
)) {
3301 * Check if falloc starts within first few pages of file
3302 * and ends within a few pages of the end of file to
3303 * ensure that most of file is being forced to be
3304 * fallocated now. If so then setting whole file sparse
3305 * ie potentially making a few extra pages at the beginning
3306 * or end of the file non-sparse via set_sparse is harmless.
3308 if ((off
> 8192) || (off
+ len
+ 8192 < i_size_read(inode
))) {
3314 smb2_set_sparse(xid
, tcon
, cfile
, inode
, false);
3319 trace_smb3_falloc_err(xid
, cfile
->fid
.persistent_fid
, tcon
->tid
,
3320 tcon
->ses
->Suid
, off
, len
, rc
);
3322 trace_smb3_falloc_done(xid
, cfile
->fid
.persistent_fid
, tcon
->tid
,
3323 tcon
->ses
->Suid
, off
, len
);
3329 static loff_t
smb3_llseek(struct file
*file
, struct cifs_tcon
*tcon
, loff_t offset
, int whence
)
3331 struct cifsFileInfo
*wrcfile
, *cfile
= file
->private_data
;
3332 struct cifsInodeInfo
*cifsi
;
3333 struct inode
*inode
;
3335 struct file_allocated_range_buffer in_data
, *out_data
= NULL
;
3339 if (whence
!= SEEK_HOLE
&& whence
!= SEEK_DATA
)
3340 return generic_file_llseek(file
, offset
, whence
);
3342 inode
= d_inode(cfile
->dentry
);
3343 cifsi
= CIFS_I(inode
);
3345 if (offset
< 0 || offset
>= i_size_read(inode
))
3350 * We need to be sure that all dirty pages are written as they
3351 * might fill holes on the server.
3352 * Note that we also MUST flush any written pages since at least
3353 * some servers (Windows2016) will not reflect recent writes in
3354 * QUERY_ALLOCATED_RANGES until SMB2_flush is called.
3356 wrcfile
= find_writable_file(cifsi
, FIND_WR_ANY
);
3358 filemap_write_and_wait(inode
->i_mapping
);
3359 smb2_flush_file(xid
, tcon
, &wrcfile
->fid
);
3360 cifsFileInfo_put(wrcfile
);
3363 if (!(cifsi
->cifsAttrs
& FILE_ATTRIBUTE_SPARSE_FILE
)) {
3364 if (whence
== SEEK_HOLE
)
3365 offset
= i_size_read(inode
);
3369 in_data
.file_offset
= cpu_to_le64(offset
);
3370 in_data
.length
= cpu_to_le64(i_size_read(inode
));
3372 rc
= SMB2_ioctl(xid
, tcon
, cfile
->fid
.persistent_fid
,
3373 cfile
->fid
.volatile_fid
,
3374 FSCTL_QUERY_ALLOCATED_RANGES
, true,
3375 (char *)&in_data
, sizeof(in_data
),
3376 sizeof(struct file_allocated_range_buffer
),
3377 (char **)&out_data
, &out_data_len
);
3383 if (whence
== SEEK_HOLE
&& out_data_len
== 0)
3386 if (whence
== SEEK_DATA
&& out_data_len
== 0) {
3391 if (out_data_len
< sizeof(struct file_allocated_range_buffer
)) {
3395 if (whence
== SEEK_DATA
) {
3396 offset
= le64_to_cpu(out_data
->file_offset
);
3399 if (offset
< le64_to_cpu(out_data
->file_offset
))
3402 offset
= le64_to_cpu(out_data
->file_offset
) + le64_to_cpu(out_data
->length
);
3408 return vfs_setpos(file
, offset
, inode
->i_sb
->s_maxbytes
);
3413 static int smb3_fiemap(struct cifs_tcon
*tcon
,
3414 struct cifsFileInfo
*cfile
,
3415 struct fiemap_extent_info
*fei
, u64 start
, u64 len
)
3418 struct file_allocated_range_buffer in_data
, *out_data
;
3420 int i
, num
, rc
, flags
, last_blob
;
3423 if (fiemap_check_flags(fei
, FIEMAP_FLAG_SYNC
))
3428 in_data
.file_offset
= cpu_to_le64(start
);
3429 in_data
.length
= cpu_to_le64(len
);
3431 rc
= SMB2_ioctl(xid
, tcon
, cfile
->fid
.persistent_fid
,
3432 cfile
->fid
.volatile_fid
,
3433 FSCTL_QUERY_ALLOCATED_RANGES
, true,
3434 (char *)&in_data
, sizeof(in_data
),
3435 1024 * sizeof(struct file_allocated_range_buffer
),
3436 (char **)&out_data
, &out_data_len
);
3445 if (out_data_len
&& out_data_len
< sizeof(struct file_allocated_range_buffer
)) {
3449 if (out_data_len
% sizeof(struct file_allocated_range_buffer
)) {
3454 num
= out_data_len
/ sizeof(struct file_allocated_range_buffer
);
3455 for (i
= 0; i
< num
; i
++) {
3457 if (i
== num
- 1 && last_blob
)
3458 flags
|= FIEMAP_EXTENT_LAST
;
3460 rc
= fiemap_fill_next_extent(fei
,
3461 le64_to_cpu(out_data
[i
].file_offset
),
3462 le64_to_cpu(out_data
[i
].file_offset
),
3463 le64_to_cpu(out_data
[i
].length
),
3474 next
= le64_to_cpu(out_data
[num
- 1].file_offset
) +
3475 le64_to_cpu(out_data
[num
- 1].length
);
3476 len
= len
- (next
- start
);
3487 static long smb3_fallocate(struct file
*file
, struct cifs_tcon
*tcon
, int mode
,
3488 loff_t off
, loff_t len
)
3490 /* KEEP_SIZE already checked for by do_fallocate */
3491 if (mode
& FALLOC_FL_PUNCH_HOLE
)
3492 return smb3_punch_hole(file
, tcon
, off
, len
);
3493 else if (mode
& FALLOC_FL_ZERO_RANGE
) {
3494 if (mode
& FALLOC_FL_KEEP_SIZE
)
3495 return smb3_zero_range(file
, tcon
, off
, len
, true);
3496 return smb3_zero_range(file
, tcon
, off
, len
, false);
3497 } else if (mode
== FALLOC_FL_KEEP_SIZE
)
3498 return smb3_simple_falloc(file
, tcon
, off
, len
, true);
3500 return smb3_simple_falloc(file
, tcon
, off
, len
, false);
3506 smb2_downgrade_oplock(struct TCP_Server_Info
*server
,
3507 struct cifsInodeInfo
*cinode
, __u32 oplock
,
3508 unsigned int epoch
, bool *purge_cache
)
3510 server
->ops
->set_oplock_level(cinode
, oplock
, 0, NULL
);
3514 smb21_set_oplock_level(struct cifsInodeInfo
*cinode
, __u32 oplock
,
3515 unsigned int epoch
, bool *purge_cache
);
3518 smb3_downgrade_oplock(struct TCP_Server_Info
*server
,
3519 struct cifsInodeInfo
*cinode
, __u32 oplock
,
3520 unsigned int epoch
, bool *purge_cache
)
3522 unsigned int old_state
= cinode
->oplock
;
3523 unsigned int old_epoch
= cinode
->epoch
;
3524 unsigned int new_state
;
3526 if (epoch
> old_epoch
) {
3527 smb21_set_oplock_level(cinode
, oplock
, 0, NULL
);
3528 cinode
->epoch
= epoch
;
3531 new_state
= cinode
->oplock
;
3532 *purge_cache
= false;
3534 if ((old_state
& CIFS_CACHE_READ_FLG
) != 0 &&
3535 (new_state
& CIFS_CACHE_READ_FLG
) == 0)
3536 *purge_cache
= true;
3537 else if (old_state
== new_state
&& (epoch
- old_epoch
> 1))
3538 *purge_cache
= true;
3542 smb2_set_oplock_level(struct cifsInodeInfo
*cinode
, __u32 oplock
,
3543 unsigned int epoch
, bool *purge_cache
)
3546 if (oplock
== SMB2_OPLOCK_LEVEL_NOCHANGE
)
3548 if (oplock
== SMB2_OPLOCK_LEVEL_BATCH
) {
3549 cinode
->oplock
= CIFS_CACHE_RHW_FLG
;
3550 cifs_dbg(FYI
, "Batch Oplock granted on inode %p\n",
3551 &cinode
->vfs_inode
);
3552 } else if (oplock
== SMB2_OPLOCK_LEVEL_EXCLUSIVE
) {
3553 cinode
->oplock
= CIFS_CACHE_RW_FLG
;
3554 cifs_dbg(FYI
, "Exclusive Oplock granted on inode %p\n",
3555 &cinode
->vfs_inode
);
3556 } else if (oplock
== SMB2_OPLOCK_LEVEL_II
) {
3557 cinode
->oplock
= CIFS_CACHE_READ_FLG
;
3558 cifs_dbg(FYI
, "Level II Oplock granted on inode %p\n",
3559 &cinode
->vfs_inode
);
3565 smb21_set_oplock_level(struct cifsInodeInfo
*cinode
, __u32 oplock
,
3566 unsigned int epoch
, bool *purge_cache
)
3568 char message
[5] = {0};
3569 unsigned int new_oplock
= 0;
3572 if (oplock
== SMB2_OPLOCK_LEVEL_NOCHANGE
)
3575 /* Check if the server granted an oplock rather than a lease */
3576 if (oplock
& SMB2_OPLOCK_LEVEL_EXCLUSIVE
)
3577 return smb2_set_oplock_level(cinode
, oplock
, epoch
,
3580 if (oplock
& SMB2_LEASE_READ_CACHING_HE
) {
3581 new_oplock
|= CIFS_CACHE_READ_FLG
;
3582 strcat(message
, "R");
3584 if (oplock
& SMB2_LEASE_HANDLE_CACHING_HE
) {
3585 new_oplock
|= CIFS_CACHE_HANDLE_FLG
;
3586 strcat(message
, "H");
3588 if (oplock
& SMB2_LEASE_WRITE_CACHING_HE
) {
3589 new_oplock
|= CIFS_CACHE_WRITE_FLG
;
3590 strcat(message
, "W");
3593 strncpy(message
, "None", sizeof(message
));
3595 cinode
->oplock
= new_oplock
;
3596 cifs_dbg(FYI
, "%s Lease granted on inode %p\n", message
,
3597 &cinode
->vfs_inode
);
3601 smb3_set_oplock_level(struct cifsInodeInfo
*cinode
, __u32 oplock
,
3602 unsigned int epoch
, bool *purge_cache
)
3604 unsigned int old_oplock
= cinode
->oplock
;
3606 smb21_set_oplock_level(cinode
, oplock
, epoch
, purge_cache
);
3609 *purge_cache
= false;
3610 if (old_oplock
== CIFS_CACHE_READ_FLG
) {
3611 if (cinode
->oplock
== CIFS_CACHE_READ_FLG
&&
3612 (epoch
- cinode
->epoch
> 0))
3613 *purge_cache
= true;
3614 else if (cinode
->oplock
== CIFS_CACHE_RH_FLG
&&
3615 (epoch
- cinode
->epoch
> 1))
3616 *purge_cache
= true;
3617 else if (cinode
->oplock
== CIFS_CACHE_RHW_FLG
&&
3618 (epoch
- cinode
->epoch
> 1))
3619 *purge_cache
= true;
3620 else if (cinode
->oplock
== 0 &&
3621 (epoch
- cinode
->epoch
> 0))
3622 *purge_cache
= true;
3623 } else if (old_oplock
== CIFS_CACHE_RH_FLG
) {
3624 if (cinode
->oplock
== CIFS_CACHE_RH_FLG
&&
3625 (epoch
- cinode
->epoch
> 0))
3626 *purge_cache
= true;
3627 else if (cinode
->oplock
== CIFS_CACHE_RHW_FLG
&&
3628 (epoch
- cinode
->epoch
> 1))
3629 *purge_cache
= true;
3631 cinode
->epoch
= epoch
;
3636 smb2_is_read_op(__u32 oplock
)
3638 return oplock
== SMB2_OPLOCK_LEVEL_II
;
3642 smb21_is_read_op(__u32 oplock
)
3644 return (oplock
& SMB2_LEASE_READ_CACHING_HE
) &&
3645 !(oplock
& SMB2_LEASE_WRITE_CACHING_HE
);
3649 map_oplock_to_lease(u8 oplock
)
3651 if (oplock
== SMB2_OPLOCK_LEVEL_EXCLUSIVE
)
3652 return SMB2_LEASE_WRITE_CACHING
| SMB2_LEASE_READ_CACHING
;
3653 else if (oplock
== SMB2_OPLOCK_LEVEL_II
)
3654 return SMB2_LEASE_READ_CACHING
;
3655 else if (oplock
== SMB2_OPLOCK_LEVEL_BATCH
)
3656 return SMB2_LEASE_HANDLE_CACHING
| SMB2_LEASE_READ_CACHING
|
3657 SMB2_LEASE_WRITE_CACHING
;
3662 smb2_create_lease_buf(u8
*lease_key
, u8 oplock
)
3664 struct create_lease
*buf
;
3666 buf
= kzalloc(sizeof(struct create_lease
), GFP_KERNEL
);
3670 memcpy(&buf
->lcontext
.LeaseKey
, lease_key
, SMB2_LEASE_KEY_SIZE
);
3671 buf
->lcontext
.LeaseState
= map_oplock_to_lease(oplock
);
3673 buf
->ccontext
.DataOffset
= cpu_to_le16(offsetof
3674 (struct create_lease
, lcontext
));
3675 buf
->ccontext
.DataLength
= cpu_to_le32(sizeof(struct lease_context
));
3676 buf
->ccontext
.NameOffset
= cpu_to_le16(offsetof
3677 (struct create_lease
, Name
));
3678 buf
->ccontext
.NameLength
= cpu_to_le16(4);
3679 /* SMB2_CREATE_REQUEST_LEASE is "RqLs" */
3688 smb3_create_lease_buf(u8
*lease_key
, u8 oplock
)
3690 struct create_lease_v2
*buf
;
3692 buf
= kzalloc(sizeof(struct create_lease_v2
), GFP_KERNEL
);
3696 memcpy(&buf
->lcontext
.LeaseKey
, lease_key
, SMB2_LEASE_KEY_SIZE
);
3697 buf
->lcontext
.LeaseState
= map_oplock_to_lease(oplock
);
3699 buf
->ccontext
.DataOffset
= cpu_to_le16(offsetof
3700 (struct create_lease_v2
, lcontext
));
3701 buf
->ccontext
.DataLength
= cpu_to_le32(sizeof(struct lease_context_v2
));
3702 buf
->ccontext
.NameOffset
= cpu_to_le16(offsetof
3703 (struct create_lease_v2
, Name
));
3704 buf
->ccontext
.NameLength
= cpu_to_le16(4);
3705 /* SMB2_CREATE_REQUEST_LEASE is "RqLs" */
3714 smb2_parse_lease_buf(void *buf
, unsigned int *epoch
, char *lease_key
)
3716 struct create_lease
*lc
= (struct create_lease
*)buf
;
3718 *epoch
= 0; /* not used */
3719 if (lc
->lcontext
.LeaseFlags
& SMB2_LEASE_FLAG_BREAK_IN_PROGRESS
)
3720 return SMB2_OPLOCK_LEVEL_NOCHANGE
;
3721 return le32_to_cpu(lc
->lcontext
.LeaseState
);
3725 smb3_parse_lease_buf(void *buf
, unsigned int *epoch
, char *lease_key
)
3727 struct create_lease_v2
*lc
= (struct create_lease_v2
*)buf
;
3729 *epoch
= le16_to_cpu(lc
->lcontext
.Epoch
);
3730 if (lc
->lcontext
.LeaseFlags
& SMB2_LEASE_FLAG_BREAK_IN_PROGRESS
)
3731 return SMB2_OPLOCK_LEVEL_NOCHANGE
;
3733 memcpy(lease_key
, &lc
->lcontext
.LeaseKey
, SMB2_LEASE_KEY_SIZE
);
3734 return le32_to_cpu(lc
->lcontext
.LeaseState
);
3738 smb2_wp_retry_size(struct inode
*inode
)
3740 return min_t(unsigned int, CIFS_SB(inode
->i_sb
)->wsize
,
3741 SMB2_MAX_BUFFER_SIZE
);
3745 smb2_dir_needs_close(struct cifsFileInfo
*cfile
)
3747 return !cfile
->invalidHandle
;
3751 fill_transform_hdr(struct smb2_transform_hdr
*tr_hdr
, unsigned int orig_len
,
3752 struct smb_rqst
*old_rq
, __le16 cipher_type
)
3754 struct smb2_sync_hdr
*shdr
=
3755 (struct smb2_sync_hdr
*)old_rq
->rq_iov
[0].iov_base
;
3757 memset(tr_hdr
, 0, sizeof(struct smb2_transform_hdr
));
3758 tr_hdr
->ProtocolId
= SMB2_TRANSFORM_PROTO_NUM
;
3759 tr_hdr
->OriginalMessageSize
= cpu_to_le32(orig_len
);
3760 tr_hdr
->Flags
= cpu_to_le16(0x01);
3761 if (cipher_type
== SMB2_ENCRYPTION_AES128_GCM
)
3762 get_random_bytes(&tr_hdr
->Nonce
, SMB3_AES128GCM_NONCE
);
3764 get_random_bytes(&tr_hdr
->Nonce
, SMB3_AES128CCM_NONCE
);
3765 memcpy(&tr_hdr
->SessionId
, &shdr
->SessionId
, 8);
3768 /* We can not use the normal sg_set_buf() as we will sometimes pass a
3769 * stack object as buf.
3771 static inline void smb2_sg_set_buf(struct scatterlist
*sg
, const void *buf
,
3772 unsigned int buflen
)
3776 * VMAP_STACK (at least) puts stack into the vmalloc address space
3778 if (is_vmalloc_addr(buf
))
3779 addr
= vmalloc_to_page(buf
);
3781 addr
= virt_to_page(buf
);
3782 sg_set_page(sg
, addr
, buflen
, offset_in_page(buf
));
3785 /* Assumes the first rqst has a transform header as the first iov.
3787 * rqst[0].rq_iov[0] is transform header
3788 * rqst[0].rq_iov[1+] data to be encrypted/decrypted
3789 * rqst[1+].rq_iov[0+] data to be encrypted/decrypted
3791 static struct scatterlist
*
3792 init_sg(int num_rqst
, struct smb_rqst
*rqst
, u8
*sign
)
3794 unsigned int sg_len
;
3795 struct scatterlist
*sg
;
3798 unsigned int idx
= 0;
3802 for (i
= 0; i
< num_rqst
; i
++)
3803 sg_len
+= rqst
[i
].rq_nvec
+ rqst
[i
].rq_npages
;
3805 sg
= kmalloc_array(sg_len
, sizeof(struct scatterlist
), GFP_KERNEL
);
3809 sg_init_table(sg
, sg_len
);
3810 for (i
= 0; i
< num_rqst
; i
++) {
3811 for (j
= 0; j
< rqst
[i
].rq_nvec
; j
++) {
3813 * The first rqst has a transform header where the
3814 * first 20 bytes are not part of the encrypted blob
3816 skip
= (i
== 0) && (j
== 0) ? 20 : 0;
3817 smb2_sg_set_buf(&sg
[idx
++],
3818 rqst
[i
].rq_iov
[j
].iov_base
+ skip
,
3819 rqst
[i
].rq_iov
[j
].iov_len
- skip
);
3822 for (j
= 0; j
< rqst
[i
].rq_npages
; j
++) {
3823 unsigned int len
, offset
;
3825 rqst_page_get_length(&rqst
[i
], j
, &len
, &offset
);
3826 sg_set_page(&sg
[idx
++], rqst
[i
].rq_pages
[j
], len
, offset
);
3829 smb2_sg_set_buf(&sg
[idx
], sign
, SMB2_SIGNATURE_SIZE
);
3834 smb2_get_enc_key(struct TCP_Server_Info
*server
, __u64 ses_id
, int enc
, u8
*key
)
3836 struct cifs_ses
*ses
;
3839 spin_lock(&cifs_tcp_ses_lock
);
3840 list_for_each_entry(server
, &cifs_tcp_ses_list
, tcp_ses_list
) {
3841 list_for_each_entry(ses
, &server
->smb_ses_list
, smb_ses_list
) {
3842 if (ses
->Suid
== ses_id
) {
3843 ses_enc_key
= enc
? ses
->smb3encryptionkey
:
3844 ses
->smb3decryptionkey
;
3845 memcpy(key
, ses_enc_key
, SMB3_SIGN_KEY_SIZE
);
3846 spin_unlock(&cifs_tcp_ses_lock
);
3851 spin_unlock(&cifs_tcp_ses_lock
);
3856 * Encrypt or decrypt @rqst message. @rqst[0] has the following format:
3857 * iov[0] - transform header (associate data),
3858 * iov[1-N] - SMB2 header and pages - data to encrypt.
3859 * On success return encrypted data in iov[1-N] and pages, leave iov[0]
3863 crypt_message(struct TCP_Server_Info
*server
, int num_rqst
,
3864 struct smb_rqst
*rqst
, int enc
)
3866 struct smb2_transform_hdr
*tr_hdr
=
3867 (struct smb2_transform_hdr
*)rqst
[0].rq_iov
[0].iov_base
;
3868 unsigned int assoc_data_len
= sizeof(struct smb2_transform_hdr
) - 20;
3870 struct scatterlist
*sg
;
3871 u8 sign
[SMB2_SIGNATURE_SIZE
] = {};
3872 u8 key
[SMB3_SIGN_KEY_SIZE
];
3873 struct aead_request
*req
;
3875 unsigned int iv_len
;
3876 DECLARE_CRYPTO_WAIT(wait
);
3877 struct crypto_aead
*tfm
;
3878 unsigned int crypt_len
= le32_to_cpu(tr_hdr
->OriginalMessageSize
);
3880 rc
= smb2_get_enc_key(server
, tr_hdr
->SessionId
, enc
, key
);
3882 cifs_server_dbg(VFS
, "%s: Could not get %scryption key\n", __func__
,
3887 rc
= smb3_crypto_aead_allocate(server
);
3889 cifs_server_dbg(VFS
, "%s: crypto alloc failed\n", __func__
);
3893 tfm
= enc
? server
->secmech
.ccmaesencrypt
:
3894 server
->secmech
.ccmaesdecrypt
;
3895 rc
= crypto_aead_setkey(tfm
, key
, SMB3_SIGN_KEY_SIZE
);
3897 cifs_server_dbg(VFS
, "%s: Failed to set aead key %d\n", __func__
, rc
);
3901 rc
= crypto_aead_setauthsize(tfm
, SMB2_SIGNATURE_SIZE
);
3903 cifs_server_dbg(VFS
, "%s: Failed to set authsize %d\n", __func__
, rc
);
3907 req
= aead_request_alloc(tfm
, GFP_KERNEL
);
3909 cifs_server_dbg(VFS
, "%s: Failed to alloc aead request\n", __func__
);
3914 memcpy(sign
, &tr_hdr
->Signature
, SMB2_SIGNATURE_SIZE
);
3915 crypt_len
+= SMB2_SIGNATURE_SIZE
;
3918 sg
= init_sg(num_rqst
, rqst
, sign
);
3920 cifs_server_dbg(VFS
, "%s: Failed to init sg\n", __func__
);
3925 iv_len
= crypto_aead_ivsize(tfm
);
3926 iv
= kzalloc(iv_len
, GFP_KERNEL
);
3928 cifs_server_dbg(VFS
, "%s: Failed to alloc iv\n", __func__
);
3933 if (server
->cipher_type
== SMB2_ENCRYPTION_AES128_GCM
)
3934 memcpy(iv
, (char *)tr_hdr
->Nonce
, SMB3_AES128GCM_NONCE
);
3937 memcpy(iv
+ 1, (char *)tr_hdr
->Nonce
, SMB3_AES128CCM_NONCE
);
3940 aead_request_set_crypt(req
, sg
, sg
, crypt_len
, iv
);
3941 aead_request_set_ad(req
, assoc_data_len
);
3943 aead_request_set_callback(req
, CRYPTO_TFM_REQ_MAY_BACKLOG
,
3944 crypto_req_done
, &wait
);
3946 rc
= crypto_wait_req(enc
? crypto_aead_encrypt(req
)
3947 : crypto_aead_decrypt(req
), &wait
);
3950 memcpy(&tr_hdr
->Signature
, sign
, SMB2_SIGNATURE_SIZE
);
3961 smb3_free_compound_rqst(int num_rqst
, struct smb_rqst
*rqst
)
3965 for (i
= 0; i
< num_rqst
; i
++) {
3966 if (rqst
[i
].rq_pages
) {
3967 for (j
= rqst
[i
].rq_npages
- 1; j
>= 0; j
--)
3968 put_page(rqst
[i
].rq_pages
[j
]);
3969 kfree(rqst
[i
].rq_pages
);
3975 * This function will initialize new_rq and encrypt the content.
3976 * The first entry, new_rq[0], only contains a single iov which contains
3977 * a smb2_transform_hdr and is pre-allocated by the caller.
3978 * This function then populates new_rq[1+] with the content from olq_rq[0+].
3980 * The end result is an array of smb_rqst structures where the first structure
3981 * only contains a single iov for the transform header which we then can pass
3982 * to crypt_message().
3984 * new_rq[0].rq_iov[0] : smb2_transform_hdr pre-allocated by the caller
3985 * new_rq[1+].rq_iov[*] == old_rq[0+].rq_iov[*] : SMB2/3 requests
3988 smb3_init_transform_rq(struct TCP_Server_Info
*server
, int num_rqst
,
3989 struct smb_rqst
*new_rq
, struct smb_rqst
*old_rq
)
3991 struct page
**pages
;
3992 struct smb2_transform_hdr
*tr_hdr
= new_rq
[0].rq_iov
[0].iov_base
;
3993 unsigned int npages
;
3994 unsigned int orig_len
= 0;
3998 for (i
= 1; i
< num_rqst
; i
++) {
3999 npages
= old_rq
[i
- 1].rq_npages
;
4000 pages
= kmalloc_array(npages
, sizeof(struct page
*),
4005 new_rq
[i
].rq_pages
= pages
;
4006 new_rq
[i
].rq_npages
= npages
;
4007 new_rq
[i
].rq_offset
= old_rq
[i
- 1].rq_offset
;
4008 new_rq
[i
].rq_pagesz
= old_rq
[i
- 1].rq_pagesz
;
4009 new_rq
[i
].rq_tailsz
= old_rq
[i
- 1].rq_tailsz
;
4010 new_rq
[i
].rq_iov
= old_rq
[i
- 1].rq_iov
;
4011 new_rq
[i
].rq_nvec
= old_rq
[i
- 1].rq_nvec
;
4013 orig_len
+= smb_rqst_len(server
, &old_rq
[i
- 1]);
4015 for (j
= 0; j
< npages
; j
++) {
4016 pages
[j
] = alloc_page(GFP_KERNEL
|__GFP_HIGHMEM
);
4021 /* copy pages form the old */
4022 for (j
= 0; j
< npages
; j
++) {
4024 unsigned int offset
, len
;
4026 rqst_page_get_length(&new_rq
[i
], j
, &len
, &offset
);
4028 dst
= (char *) kmap(new_rq
[i
].rq_pages
[j
]) + offset
;
4029 src
= (char *) kmap(old_rq
[i
- 1].rq_pages
[j
]) + offset
;
4031 memcpy(dst
, src
, len
);
4032 kunmap(new_rq
[i
].rq_pages
[j
]);
4033 kunmap(old_rq
[i
- 1].rq_pages
[j
]);
4037 /* fill the 1st iov with a transform header */
4038 fill_transform_hdr(tr_hdr
, orig_len
, old_rq
, server
->cipher_type
);
4040 rc
= crypt_message(server
, num_rqst
, new_rq
, 1);
4041 cifs_dbg(FYI
, "Encrypt message returned %d\n", rc
);
4048 smb3_free_compound_rqst(num_rqst
- 1, &new_rq
[1]);
4053 smb3_is_transform_hdr(void *buf
)
4055 struct smb2_transform_hdr
*trhdr
= buf
;
4057 return trhdr
->ProtocolId
== SMB2_TRANSFORM_PROTO_NUM
;
4061 decrypt_raw_data(struct TCP_Server_Info
*server
, char *buf
,
4062 unsigned int buf_data_size
, struct page
**pages
,
4063 unsigned int npages
, unsigned int page_data_size
)
4066 struct smb_rqst rqst
= {NULL
};
4069 iov
[0].iov_base
= buf
;
4070 iov
[0].iov_len
= sizeof(struct smb2_transform_hdr
);
4071 iov
[1].iov_base
= buf
+ sizeof(struct smb2_transform_hdr
);
4072 iov
[1].iov_len
= buf_data_size
;
4076 rqst
.rq_pages
= pages
;
4077 rqst
.rq_npages
= npages
;
4078 rqst
.rq_pagesz
= PAGE_SIZE
;
4079 rqst
.rq_tailsz
= (page_data_size
% PAGE_SIZE
) ? : PAGE_SIZE
;
4081 rc
= crypt_message(server
, 1, &rqst
, 0);
4082 cifs_dbg(FYI
, "Decrypt message returned %d\n", rc
);
4087 memmove(buf
, iov
[1].iov_base
, buf_data_size
);
4089 server
->total_read
= buf_data_size
+ page_data_size
;
4095 read_data_into_pages(struct TCP_Server_Info
*server
, struct page
**pages
,
4096 unsigned int npages
, unsigned int len
)
4101 for (i
= 0; i
< npages
; i
++) {
4102 struct page
*page
= pages
[i
];
4106 if (len
>= PAGE_SIZE
) {
4107 /* enough data to fill the page */
4111 zero_user(page
, len
, PAGE_SIZE
- len
);
4114 length
= cifs_read_page_from_socket(server
, page
, 0, n
);
4117 server
->total_read
+= length
;
4124 init_read_bvec(struct page
**pages
, unsigned int npages
, unsigned int data_size
,
4125 unsigned int cur_off
, struct bio_vec
**page_vec
)
4127 struct bio_vec
*bvec
;
4130 bvec
= kcalloc(npages
, sizeof(struct bio_vec
), GFP_KERNEL
);
4134 for (i
= 0; i
< npages
; i
++) {
4135 bvec
[i
].bv_page
= pages
[i
];
4136 bvec
[i
].bv_offset
= (i
== 0) ? cur_off
: 0;
4137 bvec
[i
].bv_len
= min_t(unsigned int, PAGE_SIZE
, data_size
);
4138 data_size
-= bvec
[i
].bv_len
;
4141 if (data_size
!= 0) {
4142 cifs_dbg(VFS
, "%s: something went wrong\n", __func__
);
4152 handle_read_data(struct TCP_Server_Info
*server
, struct mid_q_entry
*mid
,
4153 char *buf
, unsigned int buf_len
, struct page
**pages
,
4154 unsigned int npages
, unsigned int page_data_size
)
4156 unsigned int data_offset
;
4157 unsigned int data_len
;
4158 unsigned int cur_off
;
4159 unsigned int cur_page_idx
;
4160 unsigned int pad_len
;
4161 struct cifs_readdata
*rdata
= mid
->callback_data
;
4162 struct smb2_sync_hdr
*shdr
= (struct smb2_sync_hdr
*)buf
;
4163 struct bio_vec
*bvec
= NULL
;
4164 struct iov_iter iter
;
4167 bool use_rdma_mr
= false;
4169 if (shdr
->Command
!= SMB2_READ
) {
4170 cifs_server_dbg(VFS
, "only big read responses are supported\n");
4174 if (server
->ops
->is_session_expired
&&
4175 server
->ops
->is_session_expired(buf
)) {
4176 cifs_reconnect(server
);
4180 if (server
->ops
->is_status_pending
&&
4181 server
->ops
->is_status_pending(buf
, server
))
4184 /* set up first two iov to get credits */
4185 rdata
->iov
[0].iov_base
= buf
;
4186 rdata
->iov
[0].iov_len
= 0;
4187 rdata
->iov
[1].iov_base
= buf
;
4188 rdata
->iov
[1].iov_len
=
4189 min_t(unsigned int, buf_len
, server
->vals
->read_rsp_size
);
4190 cifs_dbg(FYI
, "0: iov_base=%p iov_len=%zu\n",
4191 rdata
->iov
[0].iov_base
, rdata
->iov
[0].iov_len
);
4192 cifs_dbg(FYI
, "1: iov_base=%p iov_len=%zu\n",
4193 rdata
->iov
[1].iov_base
, rdata
->iov
[1].iov_len
);
4195 rdata
->result
= server
->ops
->map_error(buf
, true);
4196 if (rdata
->result
!= 0) {
4197 cifs_dbg(FYI
, "%s: server returned error %d\n",
4198 __func__
, rdata
->result
);
4199 /* normal error on read response */
4200 dequeue_mid(mid
, false);
4204 data_offset
= server
->ops
->read_data_offset(buf
);
4205 #ifdef CONFIG_CIFS_SMB_DIRECT
4206 use_rdma_mr
= rdata
->mr
;
4208 data_len
= server
->ops
->read_data_length(buf
, use_rdma_mr
);
4210 if (data_offset
< server
->vals
->read_rsp_size
) {
4212 * win2k8 sometimes sends an offset of 0 when the read
4213 * is beyond the EOF. Treat it as if the data starts just after
4216 cifs_dbg(FYI
, "%s: data offset (%u) inside read response header\n",
4217 __func__
, data_offset
);
4218 data_offset
= server
->vals
->read_rsp_size
;
4219 } else if (data_offset
> MAX_CIFS_SMALL_BUFFER_SIZE
) {
4220 /* data_offset is beyond the end of smallbuf */
4221 cifs_dbg(FYI
, "%s: data offset (%u) beyond end of smallbuf\n",
4222 __func__
, data_offset
);
4223 rdata
->result
= -EIO
;
4224 dequeue_mid(mid
, rdata
->result
);
4228 pad_len
= data_offset
- server
->vals
->read_rsp_size
;
4230 if (buf_len
<= data_offset
) {
4231 /* read response payload is in pages */
4232 cur_page_idx
= pad_len
/ PAGE_SIZE
;
4233 cur_off
= pad_len
% PAGE_SIZE
;
4235 if (cur_page_idx
!= 0) {
4236 /* data offset is beyond the 1st page of response */
4237 cifs_dbg(FYI
, "%s: data offset (%u) beyond 1st page of response\n",
4238 __func__
, data_offset
);
4239 rdata
->result
= -EIO
;
4240 dequeue_mid(mid
, rdata
->result
);
4244 if (data_len
> page_data_size
- pad_len
) {
4245 /* data_len is corrupt -- discard frame */
4246 rdata
->result
= -EIO
;
4247 dequeue_mid(mid
, rdata
->result
);
4251 rdata
->result
= init_read_bvec(pages
, npages
, page_data_size
,
4253 if (rdata
->result
!= 0) {
4254 dequeue_mid(mid
, rdata
->result
);
4258 iov_iter_bvec(&iter
, WRITE
, bvec
, npages
, data_len
);
4259 } else if (buf_len
>= data_offset
+ data_len
) {
4260 /* read response payload is in buf */
4261 WARN_ONCE(npages
> 0, "read data can be either in buf or in pages");
4262 iov
.iov_base
= buf
+ data_offset
;
4263 iov
.iov_len
= data_len
;
4264 iov_iter_kvec(&iter
, WRITE
, &iov
, 1, data_len
);
4266 /* read response payload cannot be in both buf and pages */
4267 WARN_ONCE(1, "buf can not contain only a part of read data");
4268 rdata
->result
= -EIO
;
4269 dequeue_mid(mid
, rdata
->result
);
4273 length
= rdata
->copy_into_pages(server
, rdata
, &iter
);
4280 dequeue_mid(mid
, false);
4284 struct smb2_decrypt_work
{
4285 struct work_struct decrypt
;
4286 struct TCP_Server_Info
*server
;
4287 struct page
**ppages
;
4289 unsigned int npages
;
4294 static void smb2_decrypt_offload(struct work_struct
*work
)
4296 struct smb2_decrypt_work
*dw
= container_of(work
,
4297 struct smb2_decrypt_work
, decrypt
);
4299 struct mid_q_entry
*mid
;
4301 rc
= decrypt_raw_data(dw
->server
, dw
->buf
, dw
->server
->vals
->read_rsp_size
,
4302 dw
->ppages
, dw
->npages
, dw
->len
);
4304 cifs_dbg(VFS
, "error decrypting rc=%d\n", rc
);
4308 dw
->server
->lstrp
= jiffies
;
4309 mid
= smb2_find_mid(dw
->server
, dw
->buf
);
4311 cifs_dbg(FYI
, "mid not found\n");
4313 mid
->decrypted
= true;
4314 rc
= handle_read_data(dw
->server
, mid
, dw
->buf
,
4315 dw
->server
->vals
->read_rsp_size
,
4316 dw
->ppages
, dw
->npages
, dw
->len
);
4318 cifs_mid_q_entry_release(mid
);
4322 for (i
= dw
->npages
-1; i
>= 0; i
--)
4323 put_page(dw
->ppages
[i
]);
4326 cifs_small_buf_release(dw
->buf
);
4332 receive_encrypted_read(struct TCP_Server_Info
*server
, struct mid_q_entry
**mid
,
4335 char *buf
= server
->smallbuf
;
4336 struct smb2_transform_hdr
*tr_hdr
= (struct smb2_transform_hdr
*)buf
;
4337 unsigned int npages
;
4338 struct page
**pages
;
4340 unsigned int buflen
= server
->pdu_size
;
4343 struct smb2_decrypt_work
*dw
;
4346 len
= min_t(unsigned int, buflen
, server
->vals
->read_rsp_size
+
4347 sizeof(struct smb2_transform_hdr
)) - HEADER_SIZE(server
) + 1;
4349 rc
= cifs_read_from_socket(server
, buf
+ HEADER_SIZE(server
) - 1, len
);
4352 server
->total_read
+= rc
;
4354 len
= le32_to_cpu(tr_hdr
->OriginalMessageSize
) -
4355 server
->vals
->read_rsp_size
;
4356 npages
= DIV_ROUND_UP(len
, PAGE_SIZE
);
4358 pages
= kmalloc_array(npages
, sizeof(struct page
*), GFP_KERNEL
);
4364 for (; i
< npages
; i
++) {
4365 pages
[i
] = alloc_page(GFP_KERNEL
|__GFP_HIGHMEM
);
4372 /* read read data into pages */
4373 rc
= read_data_into_pages(server
, pages
, npages
, len
);
4377 rc
= cifs_discard_remaining_data(server
);
4382 * For large reads, offload to different thread for better performance,
4383 * use more cores decrypting which can be expensive
4386 if ((server
->min_offload
) && (server
->in_flight
> 1) &&
4387 (server
->pdu_size
>= server
->min_offload
)) {
4388 dw
= kmalloc(sizeof(struct smb2_decrypt_work
), GFP_KERNEL
);
4390 goto non_offloaded_decrypt
;
4392 dw
->buf
= server
->smallbuf
;
4393 server
->smallbuf
= (char *)cifs_small_buf_get();
4395 INIT_WORK(&dw
->decrypt
, smb2_decrypt_offload
);
4397 dw
->npages
= npages
;
4398 dw
->server
= server
;
4401 queue_work(decrypt_wq
, &dw
->decrypt
);
4402 *num_mids
= 0; /* worker thread takes care of finding mid */
4406 non_offloaded_decrypt
:
4407 rc
= decrypt_raw_data(server
, buf
, server
->vals
->read_rsp_size
,
4408 pages
, npages
, len
);
4412 *mid
= smb2_find_mid(server
, buf
);
4414 cifs_dbg(FYI
, "mid not found\n");
4416 cifs_dbg(FYI
, "mid found\n");
4417 (*mid
)->decrypted
= true;
4418 rc
= handle_read_data(server
, *mid
, buf
,
4419 server
->vals
->read_rsp_size
,
4420 pages
, npages
, len
);
4424 for (i
= i
- 1; i
>= 0; i
--)
4429 cifs_discard_remaining_data(server
);
4434 receive_encrypted_standard(struct TCP_Server_Info
*server
,
4435 struct mid_q_entry
**mids
, char **bufs
,
4439 char *buf
= server
->smallbuf
;
4440 struct smb2_sync_hdr
*shdr
;
4441 unsigned int pdu_length
= server
->pdu_size
;
4442 unsigned int buf_size
;
4443 struct mid_q_entry
*mid_entry
;
4445 char *next_buffer
= NULL
;
4449 /* switch to large buffer if too big for a small one */
4450 if (pdu_length
> MAX_CIFS_SMALL_BUFFER_SIZE
) {
4451 server
->large_buf
= true;
4452 memcpy(server
->bigbuf
, buf
, server
->total_read
);
4453 buf
= server
->bigbuf
;
4456 /* now read the rest */
4457 length
= cifs_read_from_socket(server
, buf
+ HEADER_SIZE(server
) - 1,
4458 pdu_length
- HEADER_SIZE(server
) + 1);
4461 server
->total_read
+= length
;
4463 buf_size
= pdu_length
- sizeof(struct smb2_transform_hdr
);
4464 length
= decrypt_raw_data(server
, buf
, buf_size
, NULL
, 0, 0);
4468 next_is_large
= server
->large_buf
;
4470 shdr
= (struct smb2_sync_hdr
*)buf
;
4471 if (shdr
->NextCommand
) {
4473 next_buffer
= (char *)cifs_buf_get();
4475 next_buffer
= (char *)cifs_small_buf_get();
4477 buf
+ le32_to_cpu(shdr
->NextCommand
),
4478 pdu_length
- le32_to_cpu(shdr
->NextCommand
));
4481 mid_entry
= smb2_find_mid(server
, buf
);
4482 if (mid_entry
== NULL
)
4483 cifs_dbg(FYI
, "mid not found\n");
4485 cifs_dbg(FYI
, "mid found\n");
4486 mid_entry
->decrypted
= true;
4487 mid_entry
->resp_buf_size
= server
->pdu_size
;
4490 if (*num_mids
>= MAX_COMPOUND
) {
4491 cifs_server_dbg(VFS
, "too many PDUs in compound\n");
4494 bufs
[*num_mids
] = buf
;
4495 mids
[(*num_mids
)++] = mid_entry
;
4497 if (mid_entry
&& mid_entry
->handle
)
4498 ret
= mid_entry
->handle(server
, mid_entry
);
4500 ret
= cifs_handle_standard(server
, mid_entry
);
4502 if (ret
== 0 && shdr
->NextCommand
) {
4503 pdu_length
-= le32_to_cpu(shdr
->NextCommand
);
4504 server
->large_buf
= next_is_large
;
4506 server
->bigbuf
= buf
= next_buffer
;
4508 server
->smallbuf
= buf
= next_buffer
;
4510 } else if (ret
!= 0) {
4512 * ret != 0 here means that we didn't get to handle_mid() thus
4513 * server->smallbuf and server->bigbuf are still valid. We need
4514 * to free next_buffer because it is not going to be used
4518 free_rsp_buf(CIFS_LARGE_BUFFER
, next_buffer
);
4520 free_rsp_buf(CIFS_SMALL_BUFFER
, next_buffer
);
4527 smb3_receive_transform(struct TCP_Server_Info
*server
,
4528 struct mid_q_entry
**mids
, char **bufs
, int *num_mids
)
4530 char *buf
= server
->smallbuf
;
4531 unsigned int pdu_length
= server
->pdu_size
;
4532 struct smb2_transform_hdr
*tr_hdr
= (struct smb2_transform_hdr
*)buf
;
4533 unsigned int orig_len
= le32_to_cpu(tr_hdr
->OriginalMessageSize
);
4535 if (pdu_length
< sizeof(struct smb2_transform_hdr
) +
4536 sizeof(struct smb2_sync_hdr
)) {
4537 cifs_server_dbg(VFS
, "Transform message is too small (%u)\n",
4539 cifs_reconnect(server
);
4540 return -ECONNABORTED
;
4543 if (pdu_length
< orig_len
+ sizeof(struct smb2_transform_hdr
)) {
4544 cifs_server_dbg(VFS
, "Transform message is broken\n");
4545 cifs_reconnect(server
);
4546 return -ECONNABORTED
;
4549 /* TODO: add support for compounds containing READ. */
4550 if (pdu_length
> CIFSMaxBufSize
+ MAX_HEADER_SIZE(server
)) {
4551 return receive_encrypted_read(server
, &mids
[0], num_mids
);
4554 return receive_encrypted_standard(server
, mids
, bufs
, num_mids
);
4558 smb3_handle_read_data(struct TCP_Server_Info
*server
, struct mid_q_entry
*mid
)
4560 char *buf
= server
->large_buf
? server
->bigbuf
: server
->smallbuf
;
4562 return handle_read_data(server
, mid
, buf
, server
->pdu_size
,
4567 smb2_next_header(char *buf
)
4569 struct smb2_sync_hdr
*hdr
= (struct smb2_sync_hdr
*)buf
;
4570 struct smb2_transform_hdr
*t_hdr
= (struct smb2_transform_hdr
*)buf
;
4572 if (hdr
->ProtocolId
== SMB2_TRANSFORM_PROTO_NUM
)
4573 return sizeof(struct smb2_transform_hdr
) +
4574 le32_to_cpu(t_hdr
->OriginalMessageSize
);
4576 return le32_to_cpu(hdr
->NextCommand
);
4580 smb2_make_node(unsigned int xid
, struct inode
*inode
,
4581 struct dentry
*dentry
, struct cifs_tcon
*tcon
,
4582 char *full_path
, umode_t mode
, dev_t dev
)
4584 struct cifs_sb_info
*cifs_sb
= CIFS_SB(inode
->i_sb
);
4586 FILE_ALL_INFO
*buf
= NULL
;
4587 struct cifs_io_parms io_parms
;
4589 struct cifs_fid fid
;
4590 struct cifs_open_parms oparms
;
4591 unsigned int bytes_written
;
4592 struct win_dev
*pdev
;
4596 * Check if mounted with mount parm 'sfu' mount parm.
4597 * SFU emulation should work with all servers, but only
4598 * supports block and char device (no socket & fifo),
4599 * and was used by default in earlier versions of Windows
4601 if (!(cifs_sb
->mnt_cifs_flags
& CIFS_MOUNT_UNX_EMUL
))
4605 * TODO: Add ability to create instead via reparse point. Windows (e.g.
4606 * their current NFS server) uses this approach to expose special files
4607 * over SMB2/SMB3 and Samba will do this with SMB3.1.1 POSIX Extensions
4610 if (!S_ISCHR(mode
) && !S_ISBLK(mode
))
4613 cifs_dbg(FYI
, "sfu compat create special file\n");
4615 buf
= kmalloc(sizeof(FILE_ALL_INFO
), GFP_KERNEL
);
4622 oparms
.cifs_sb
= cifs_sb
;
4623 oparms
.desired_access
= GENERIC_WRITE
;
4624 oparms
.create_options
= cifs_create_options(cifs_sb
, CREATE_NOT_DIR
|
4625 CREATE_OPTION_SPECIAL
);
4626 oparms
.disposition
= FILE_CREATE
;
4627 oparms
.path
= full_path
;
4629 oparms
.reconnect
= false;
4631 if (tcon
->ses
->server
->oplocks
)
4632 oplock
= REQ_OPLOCK
;
4635 rc
= tcon
->ses
->server
->ops
->open(xid
, &oparms
, &oplock
, buf
);
4640 * BB Do not bother to decode buf since no local inode yet to put
4641 * timestamps in, but we can reuse it safely.
4644 pdev
= (struct win_dev
*)buf
;
4645 io_parms
.pid
= current
->tgid
;
4646 io_parms
.tcon
= tcon
;
4647 io_parms
.offset
= 0;
4648 io_parms
.length
= sizeof(struct win_dev
);
4649 iov
[1].iov_base
= buf
;
4650 iov
[1].iov_len
= sizeof(struct win_dev
);
4651 if (S_ISCHR(mode
)) {
4652 memcpy(pdev
->type
, "IntxCHR", 8);
4653 pdev
->major
= cpu_to_le64(MAJOR(dev
));
4654 pdev
->minor
= cpu_to_le64(MINOR(dev
));
4655 rc
= tcon
->ses
->server
->ops
->sync_write(xid
, &fid
, &io_parms
,
4656 &bytes_written
, iov
, 1);
4657 } else if (S_ISBLK(mode
)) {
4658 memcpy(pdev
->type
, "IntxBLK", 8);
4659 pdev
->major
= cpu_to_le64(MAJOR(dev
));
4660 pdev
->minor
= cpu_to_le64(MINOR(dev
));
4661 rc
= tcon
->ses
->server
->ops
->sync_write(xid
, &fid
, &io_parms
,
4662 &bytes_written
, iov
, 1);
4664 tcon
->ses
->server
->ops
->close(xid
, tcon
, &fid
);
4667 /* FIXME: add code here to set EAs */
4674 struct smb_version_operations smb20_operations
= {
4675 .compare_fids
= smb2_compare_fids
,
4676 .setup_request
= smb2_setup_request
,
4677 .setup_async_request
= smb2_setup_async_request
,
4678 .check_receive
= smb2_check_receive
,
4679 .add_credits
= smb2_add_credits
,
4680 .set_credits
= smb2_set_credits
,
4681 .get_credits_field
= smb2_get_credits_field
,
4682 .get_credits
= smb2_get_credits
,
4683 .wait_mtu_credits
= cifs_wait_mtu_credits
,
4684 .get_next_mid
= smb2_get_next_mid
,
4685 .revert_current_mid
= smb2_revert_current_mid
,
4686 .read_data_offset
= smb2_read_data_offset
,
4687 .read_data_length
= smb2_read_data_length
,
4688 .map_error
= map_smb2_to_linux_error
,
4689 .find_mid
= smb2_find_mid
,
4690 .check_message
= smb2_check_message
,
4691 .dump_detail
= smb2_dump_detail
,
4692 .clear_stats
= smb2_clear_stats
,
4693 .print_stats
= smb2_print_stats
,
4694 .is_oplock_break
= smb2_is_valid_oplock_break
,
4695 .handle_cancelled_mid
= smb2_handle_cancelled_mid
,
4696 .downgrade_oplock
= smb2_downgrade_oplock
,
4697 .need_neg
= smb2_need_neg
,
4698 .negotiate
= smb2_negotiate
,
4699 .negotiate_wsize
= smb2_negotiate_wsize
,
4700 .negotiate_rsize
= smb2_negotiate_rsize
,
4701 .sess_setup
= SMB2_sess_setup
,
4702 .logoff
= SMB2_logoff
,
4703 .tree_connect
= SMB2_tcon
,
4704 .tree_disconnect
= SMB2_tdis
,
4705 .qfs_tcon
= smb2_qfs_tcon
,
4706 .is_path_accessible
= smb2_is_path_accessible
,
4707 .can_echo
= smb2_can_echo
,
4709 .query_path_info
= smb2_query_path_info
,
4710 .get_srv_inum
= smb2_get_srv_inum
,
4711 .query_file_info
= smb2_query_file_info
,
4712 .set_path_size
= smb2_set_path_size
,
4713 .set_file_size
= smb2_set_file_size
,
4714 .set_file_info
= smb2_set_file_info
,
4715 .set_compression
= smb2_set_compression
,
4716 .mkdir
= smb2_mkdir
,
4717 .mkdir_setinfo
= smb2_mkdir_setinfo
,
4718 .rmdir
= smb2_rmdir
,
4719 .unlink
= smb2_unlink
,
4720 .rename
= smb2_rename_path
,
4721 .create_hardlink
= smb2_create_hardlink
,
4722 .query_symlink
= smb2_query_symlink
,
4723 .query_mf_symlink
= smb3_query_mf_symlink
,
4724 .create_mf_symlink
= smb3_create_mf_symlink
,
4725 .open
= smb2_open_file
,
4726 .set_fid
= smb2_set_fid
,
4727 .close
= smb2_close_file
,
4728 .flush
= smb2_flush_file
,
4729 .async_readv
= smb2_async_readv
,
4730 .async_writev
= smb2_async_writev
,
4731 .sync_read
= smb2_sync_read
,
4732 .sync_write
= smb2_sync_write
,
4733 .query_dir_first
= smb2_query_dir_first
,
4734 .query_dir_next
= smb2_query_dir_next
,
4735 .close_dir
= smb2_close_dir
,
4736 .calc_smb_size
= smb2_calc_size
,
4737 .is_status_pending
= smb2_is_status_pending
,
4738 .is_session_expired
= smb2_is_session_expired
,
4739 .oplock_response
= smb2_oplock_response
,
4740 .queryfs
= smb2_queryfs
,
4741 .mand_lock
= smb2_mand_lock
,
4742 .mand_unlock_range
= smb2_unlock_range
,
4743 .push_mand_locks
= smb2_push_mandatory_locks
,
4744 .get_lease_key
= smb2_get_lease_key
,
4745 .set_lease_key
= smb2_set_lease_key
,
4746 .new_lease_key
= smb2_new_lease_key
,
4747 .calc_signature
= smb2_calc_signature
,
4748 .is_read_op
= smb2_is_read_op
,
4749 .set_oplock_level
= smb2_set_oplock_level
,
4750 .create_lease_buf
= smb2_create_lease_buf
,
4751 .parse_lease_buf
= smb2_parse_lease_buf
,
4752 .copychunk_range
= smb2_copychunk_range
,
4753 .wp_retry_size
= smb2_wp_retry_size
,
4754 .dir_needs_close
= smb2_dir_needs_close
,
4755 .get_dfs_refer
= smb2_get_dfs_refer
,
4756 .select_sectype
= smb2_select_sectype
,
4757 #ifdef CONFIG_CIFS_XATTR
4758 .query_all_EAs
= smb2_query_eas
,
4759 .set_EA
= smb2_set_ea
,
4760 #endif /* CIFS_XATTR */
4761 .get_acl
= get_smb2_acl
,
4762 .get_acl_by_fid
= get_smb2_acl_by_fid
,
4763 .set_acl
= set_smb2_acl
,
4764 .next_header
= smb2_next_header
,
4765 .ioctl_query_info
= smb2_ioctl_query_info
,
4766 .make_node
= smb2_make_node
,
4767 .fiemap
= smb3_fiemap
,
4768 .llseek
= smb3_llseek
,
4771 struct smb_version_operations smb21_operations
= {
4772 .compare_fids
= smb2_compare_fids
,
4773 .setup_request
= smb2_setup_request
,
4774 .setup_async_request
= smb2_setup_async_request
,
4775 .check_receive
= smb2_check_receive
,
4776 .add_credits
= smb2_add_credits
,
4777 .set_credits
= smb2_set_credits
,
4778 .get_credits_field
= smb2_get_credits_field
,
4779 .get_credits
= smb2_get_credits
,
4780 .wait_mtu_credits
= smb2_wait_mtu_credits
,
4781 .adjust_credits
= smb2_adjust_credits
,
4782 .get_next_mid
= smb2_get_next_mid
,
4783 .revert_current_mid
= smb2_revert_current_mid
,
4784 .read_data_offset
= smb2_read_data_offset
,
4785 .read_data_length
= smb2_read_data_length
,
4786 .map_error
= map_smb2_to_linux_error
,
4787 .find_mid
= smb2_find_mid
,
4788 .check_message
= smb2_check_message
,
4789 .dump_detail
= smb2_dump_detail
,
4790 .clear_stats
= smb2_clear_stats
,
4791 .print_stats
= smb2_print_stats
,
4792 .is_oplock_break
= smb2_is_valid_oplock_break
,
4793 .handle_cancelled_mid
= smb2_handle_cancelled_mid
,
4794 .downgrade_oplock
= smb2_downgrade_oplock
,
4795 .need_neg
= smb2_need_neg
,
4796 .negotiate
= smb2_negotiate
,
4797 .negotiate_wsize
= smb2_negotiate_wsize
,
4798 .negotiate_rsize
= smb2_negotiate_rsize
,
4799 .sess_setup
= SMB2_sess_setup
,
4800 .logoff
= SMB2_logoff
,
4801 .tree_connect
= SMB2_tcon
,
4802 .tree_disconnect
= SMB2_tdis
,
4803 .qfs_tcon
= smb2_qfs_tcon
,
4804 .is_path_accessible
= smb2_is_path_accessible
,
4805 .can_echo
= smb2_can_echo
,
4807 .query_path_info
= smb2_query_path_info
,
4808 .get_srv_inum
= smb2_get_srv_inum
,
4809 .query_file_info
= smb2_query_file_info
,
4810 .set_path_size
= smb2_set_path_size
,
4811 .set_file_size
= smb2_set_file_size
,
4812 .set_file_info
= smb2_set_file_info
,
4813 .set_compression
= smb2_set_compression
,
4814 .mkdir
= smb2_mkdir
,
4815 .mkdir_setinfo
= smb2_mkdir_setinfo
,
4816 .rmdir
= smb2_rmdir
,
4817 .unlink
= smb2_unlink
,
4818 .rename
= smb2_rename_path
,
4819 .create_hardlink
= smb2_create_hardlink
,
4820 .query_symlink
= smb2_query_symlink
,
4821 .query_mf_symlink
= smb3_query_mf_symlink
,
4822 .create_mf_symlink
= smb3_create_mf_symlink
,
4823 .open
= smb2_open_file
,
4824 .set_fid
= smb2_set_fid
,
4825 .close
= smb2_close_file
,
4826 .flush
= smb2_flush_file
,
4827 .async_readv
= smb2_async_readv
,
4828 .async_writev
= smb2_async_writev
,
4829 .sync_read
= smb2_sync_read
,
4830 .sync_write
= smb2_sync_write
,
4831 .query_dir_first
= smb2_query_dir_first
,
4832 .query_dir_next
= smb2_query_dir_next
,
4833 .close_dir
= smb2_close_dir
,
4834 .calc_smb_size
= smb2_calc_size
,
4835 .is_status_pending
= smb2_is_status_pending
,
4836 .is_session_expired
= smb2_is_session_expired
,
4837 .oplock_response
= smb2_oplock_response
,
4838 .queryfs
= smb2_queryfs
,
4839 .mand_lock
= smb2_mand_lock
,
4840 .mand_unlock_range
= smb2_unlock_range
,
4841 .push_mand_locks
= smb2_push_mandatory_locks
,
4842 .get_lease_key
= smb2_get_lease_key
,
4843 .set_lease_key
= smb2_set_lease_key
,
4844 .new_lease_key
= smb2_new_lease_key
,
4845 .calc_signature
= smb2_calc_signature
,
4846 .is_read_op
= smb21_is_read_op
,
4847 .set_oplock_level
= smb21_set_oplock_level
,
4848 .create_lease_buf
= smb2_create_lease_buf
,
4849 .parse_lease_buf
= smb2_parse_lease_buf
,
4850 .copychunk_range
= smb2_copychunk_range
,
4851 .wp_retry_size
= smb2_wp_retry_size
,
4852 .dir_needs_close
= smb2_dir_needs_close
,
4853 .enum_snapshots
= smb3_enum_snapshots
,
4854 .notify
= smb3_notify
,
4855 .get_dfs_refer
= smb2_get_dfs_refer
,
4856 .select_sectype
= smb2_select_sectype
,
4857 #ifdef CONFIG_CIFS_XATTR
4858 .query_all_EAs
= smb2_query_eas
,
4859 .set_EA
= smb2_set_ea
,
4860 #endif /* CIFS_XATTR */
4861 .get_acl
= get_smb2_acl
,
4862 .get_acl_by_fid
= get_smb2_acl_by_fid
,
4863 .set_acl
= set_smb2_acl
,
4864 .next_header
= smb2_next_header
,
4865 .ioctl_query_info
= smb2_ioctl_query_info
,
4866 .make_node
= smb2_make_node
,
4867 .fiemap
= smb3_fiemap
,
4868 .llseek
= smb3_llseek
,
4871 struct smb_version_operations smb30_operations
= {
4872 .compare_fids
= smb2_compare_fids
,
4873 .setup_request
= smb2_setup_request
,
4874 .setup_async_request
= smb2_setup_async_request
,
4875 .check_receive
= smb2_check_receive
,
4876 .add_credits
= smb2_add_credits
,
4877 .set_credits
= smb2_set_credits
,
4878 .get_credits_field
= smb2_get_credits_field
,
4879 .get_credits
= smb2_get_credits
,
4880 .wait_mtu_credits
= smb2_wait_mtu_credits
,
4881 .adjust_credits
= smb2_adjust_credits
,
4882 .get_next_mid
= smb2_get_next_mid
,
4883 .revert_current_mid
= smb2_revert_current_mid
,
4884 .read_data_offset
= smb2_read_data_offset
,
4885 .read_data_length
= smb2_read_data_length
,
4886 .map_error
= map_smb2_to_linux_error
,
4887 .find_mid
= smb2_find_mid
,
4888 .check_message
= smb2_check_message
,
4889 .dump_detail
= smb2_dump_detail
,
4890 .clear_stats
= smb2_clear_stats
,
4891 .print_stats
= smb2_print_stats
,
4892 .dump_share_caps
= smb2_dump_share_caps
,
4893 .is_oplock_break
= smb2_is_valid_oplock_break
,
4894 .handle_cancelled_mid
= smb2_handle_cancelled_mid
,
4895 .downgrade_oplock
= smb3_downgrade_oplock
,
4896 .need_neg
= smb2_need_neg
,
4897 .negotiate
= smb2_negotiate
,
4898 .negotiate_wsize
= smb3_negotiate_wsize
,
4899 .negotiate_rsize
= smb3_negotiate_rsize
,
4900 .sess_setup
= SMB2_sess_setup
,
4901 .logoff
= SMB2_logoff
,
4902 .tree_connect
= SMB2_tcon
,
4903 .tree_disconnect
= SMB2_tdis
,
4904 .qfs_tcon
= smb3_qfs_tcon
,
4905 .is_path_accessible
= smb2_is_path_accessible
,
4906 .can_echo
= smb2_can_echo
,
4908 .query_path_info
= smb2_query_path_info
,
4909 .get_srv_inum
= smb2_get_srv_inum
,
4910 .query_file_info
= smb2_query_file_info
,
4911 .set_path_size
= smb2_set_path_size
,
4912 .set_file_size
= smb2_set_file_size
,
4913 .set_file_info
= smb2_set_file_info
,
4914 .set_compression
= smb2_set_compression
,
4915 .mkdir
= smb2_mkdir
,
4916 .mkdir_setinfo
= smb2_mkdir_setinfo
,
4917 .rmdir
= smb2_rmdir
,
4918 .unlink
= smb2_unlink
,
4919 .rename
= smb2_rename_path
,
4920 .create_hardlink
= smb2_create_hardlink
,
4921 .query_symlink
= smb2_query_symlink
,
4922 .query_mf_symlink
= smb3_query_mf_symlink
,
4923 .create_mf_symlink
= smb3_create_mf_symlink
,
4924 .open
= smb2_open_file
,
4925 .set_fid
= smb2_set_fid
,
4926 .close
= smb2_close_file
,
4927 .close_getattr
= smb2_close_getattr
,
4928 .flush
= smb2_flush_file
,
4929 .async_readv
= smb2_async_readv
,
4930 .async_writev
= smb2_async_writev
,
4931 .sync_read
= smb2_sync_read
,
4932 .sync_write
= smb2_sync_write
,
4933 .query_dir_first
= smb2_query_dir_first
,
4934 .query_dir_next
= smb2_query_dir_next
,
4935 .close_dir
= smb2_close_dir
,
4936 .calc_smb_size
= smb2_calc_size
,
4937 .is_status_pending
= smb2_is_status_pending
,
4938 .is_session_expired
= smb2_is_session_expired
,
4939 .oplock_response
= smb2_oplock_response
,
4940 .queryfs
= smb2_queryfs
,
4941 .mand_lock
= smb2_mand_lock
,
4942 .mand_unlock_range
= smb2_unlock_range
,
4943 .push_mand_locks
= smb2_push_mandatory_locks
,
4944 .get_lease_key
= smb2_get_lease_key
,
4945 .set_lease_key
= smb2_set_lease_key
,
4946 .new_lease_key
= smb2_new_lease_key
,
4947 .generate_signingkey
= generate_smb30signingkey
,
4948 .calc_signature
= smb3_calc_signature
,
4949 .set_integrity
= smb3_set_integrity
,
4950 .is_read_op
= smb21_is_read_op
,
4951 .set_oplock_level
= smb3_set_oplock_level
,
4952 .create_lease_buf
= smb3_create_lease_buf
,
4953 .parse_lease_buf
= smb3_parse_lease_buf
,
4954 .copychunk_range
= smb2_copychunk_range
,
4955 .duplicate_extents
= smb2_duplicate_extents
,
4956 .validate_negotiate
= smb3_validate_negotiate
,
4957 .wp_retry_size
= smb2_wp_retry_size
,
4958 .dir_needs_close
= smb2_dir_needs_close
,
4959 .fallocate
= smb3_fallocate
,
4960 .enum_snapshots
= smb3_enum_snapshots
,
4961 .notify
= smb3_notify
,
4962 .init_transform_rq
= smb3_init_transform_rq
,
4963 .is_transform_hdr
= smb3_is_transform_hdr
,
4964 .receive_transform
= smb3_receive_transform
,
4965 .get_dfs_refer
= smb2_get_dfs_refer
,
4966 .select_sectype
= smb2_select_sectype
,
4967 #ifdef CONFIG_CIFS_XATTR
4968 .query_all_EAs
= smb2_query_eas
,
4969 .set_EA
= smb2_set_ea
,
4970 #endif /* CIFS_XATTR */
4971 .get_acl
= get_smb2_acl
,
4972 .get_acl_by_fid
= get_smb2_acl_by_fid
,
4973 .set_acl
= set_smb2_acl
,
4974 .next_header
= smb2_next_header
,
4975 .ioctl_query_info
= smb2_ioctl_query_info
,
4976 .make_node
= smb2_make_node
,
4977 .fiemap
= smb3_fiemap
,
4978 .llseek
= smb3_llseek
,
4981 struct smb_version_operations smb311_operations
= {
4982 .compare_fids
= smb2_compare_fids
,
4983 .setup_request
= smb2_setup_request
,
4984 .setup_async_request
= smb2_setup_async_request
,
4985 .check_receive
= smb2_check_receive
,
4986 .add_credits
= smb2_add_credits
,
4987 .set_credits
= smb2_set_credits
,
4988 .get_credits_field
= smb2_get_credits_field
,
4989 .get_credits
= smb2_get_credits
,
4990 .wait_mtu_credits
= smb2_wait_mtu_credits
,
4991 .adjust_credits
= smb2_adjust_credits
,
4992 .get_next_mid
= smb2_get_next_mid
,
4993 .revert_current_mid
= smb2_revert_current_mid
,
4994 .read_data_offset
= smb2_read_data_offset
,
4995 .read_data_length
= smb2_read_data_length
,
4996 .map_error
= map_smb2_to_linux_error
,
4997 .find_mid
= smb2_find_mid
,
4998 .check_message
= smb2_check_message
,
4999 .dump_detail
= smb2_dump_detail
,
5000 .clear_stats
= smb2_clear_stats
,
5001 .print_stats
= smb2_print_stats
,
5002 .dump_share_caps
= smb2_dump_share_caps
,
5003 .is_oplock_break
= smb2_is_valid_oplock_break
,
5004 .handle_cancelled_mid
= smb2_handle_cancelled_mid
,
5005 .downgrade_oplock
= smb3_downgrade_oplock
,
5006 .need_neg
= smb2_need_neg
,
5007 .negotiate
= smb2_negotiate
,
5008 .negotiate_wsize
= smb3_negotiate_wsize
,
5009 .negotiate_rsize
= smb3_negotiate_rsize
,
5010 .sess_setup
= SMB2_sess_setup
,
5011 .logoff
= SMB2_logoff
,
5012 .tree_connect
= SMB2_tcon
,
5013 .tree_disconnect
= SMB2_tdis
,
5014 .qfs_tcon
= smb3_qfs_tcon
,
5015 .is_path_accessible
= smb2_is_path_accessible
,
5016 .can_echo
= smb2_can_echo
,
5018 .query_path_info
= smb2_query_path_info
,
5019 .get_srv_inum
= smb2_get_srv_inum
,
5020 .query_file_info
= smb2_query_file_info
,
5021 .set_path_size
= smb2_set_path_size
,
5022 .set_file_size
= smb2_set_file_size
,
5023 .set_file_info
= smb2_set_file_info
,
5024 .set_compression
= smb2_set_compression
,
5025 .mkdir
= smb2_mkdir
,
5026 .mkdir_setinfo
= smb2_mkdir_setinfo
,
5027 .posix_mkdir
= smb311_posix_mkdir
,
5028 .rmdir
= smb2_rmdir
,
5029 .unlink
= smb2_unlink
,
5030 .rename
= smb2_rename_path
,
5031 .create_hardlink
= smb2_create_hardlink
,
5032 .query_symlink
= smb2_query_symlink
,
5033 .query_mf_symlink
= smb3_query_mf_symlink
,
5034 .create_mf_symlink
= smb3_create_mf_symlink
,
5035 .open
= smb2_open_file
,
5036 .set_fid
= smb2_set_fid
,
5037 .close
= smb2_close_file
,
5038 .close_getattr
= smb2_close_getattr
,
5039 .flush
= smb2_flush_file
,
5040 .async_readv
= smb2_async_readv
,
5041 .async_writev
= smb2_async_writev
,
5042 .sync_read
= smb2_sync_read
,
5043 .sync_write
= smb2_sync_write
,
5044 .query_dir_first
= smb2_query_dir_first
,
5045 .query_dir_next
= smb2_query_dir_next
,
5046 .close_dir
= smb2_close_dir
,
5047 .calc_smb_size
= smb2_calc_size
,
5048 .is_status_pending
= smb2_is_status_pending
,
5049 .is_session_expired
= smb2_is_session_expired
,
5050 .oplock_response
= smb2_oplock_response
,
5051 .queryfs
= smb311_queryfs
,
5052 .mand_lock
= smb2_mand_lock
,
5053 .mand_unlock_range
= smb2_unlock_range
,
5054 .push_mand_locks
= smb2_push_mandatory_locks
,
5055 .get_lease_key
= smb2_get_lease_key
,
5056 .set_lease_key
= smb2_set_lease_key
,
5057 .new_lease_key
= smb2_new_lease_key
,
5058 .generate_signingkey
= generate_smb311signingkey
,
5059 .calc_signature
= smb3_calc_signature
,
5060 .set_integrity
= smb3_set_integrity
,
5061 .is_read_op
= smb21_is_read_op
,
5062 .set_oplock_level
= smb3_set_oplock_level
,
5063 .create_lease_buf
= smb3_create_lease_buf
,
5064 .parse_lease_buf
= smb3_parse_lease_buf
,
5065 .copychunk_range
= smb2_copychunk_range
,
5066 .duplicate_extents
= smb2_duplicate_extents
,
5067 /* .validate_negotiate = smb3_validate_negotiate, */ /* not used in 3.11 */
5068 .wp_retry_size
= smb2_wp_retry_size
,
5069 .dir_needs_close
= smb2_dir_needs_close
,
5070 .fallocate
= smb3_fallocate
,
5071 .enum_snapshots
= smb3_enum_snapshots
,
5072 .notify
= smb3_notify
,
5073 .init_transform_rq
= smb3_init_transform_rq
,
5074 .is_transform_hdr
= smb3_is_transform_hdr
,
5075 .receive_transform
= smb3_receive_transform
,
5076 .get_dfs_refer
= smb2_get_dfs_refer
,
5077 .select_sectype
= smb2_select_sectype
,
5078 #ifdef CONFIG_CIFS_XATTR
5079 .query_all_EAs
= smb2_query_eas
,
5080 .set_EA
= smb2_set_ea
,
5081 #endif /* CIFS_XATTR */
5082 .get_acl
= get_smb2_acl
,
5083 .get_acl_by_fid
= get_smb2_acl_by_fid
,
5084 .set_acl
= set_smb2_acl
,
5085 .next_header
= smb2_next_header
,
5086 .ioctl_query_info
= smb2_ioctl_query_info
,
5087 .make_node
= smb2_make_node
,
5088 .fiemap
= smb3_fiemap
,
5089 .llseek
= smb3_llseek
,
5092 struct smb_version_values smb20_values
= {
5093 .version_string
= SMB20_VERSION_STRING
,
5094 .protocol_id
= SMB20_PROT_ID
,
5095 .req_capabilities
= 0, /* MBZ */
5096 .large_lock_type
= 0,
5097 .exclusive_lock_type
= SMB2_LOCKFLAG_EXCLUSIVE_LOCK
,
5098 .shared_lock_type
= SMB2_LOCKFLAG_SHARED_LOCK
,
5099 .unlock_lock_type
= SMB2_LOCKFLAG_UNLOCK
,
5100 .header_size
= sizeof(struct smb2_sync_hdr
),
5101 .header_preamble_size
= 0,
5102 .max_header_size
= MAX_SMB2_HDR_SIZE
,
5103 .read_rsp_size
= sizeof(struct smb2_read_rsp
) - 1,
5104 .lock_cmd
= SMB2_LOCK
,
5106 .cap_nt_find
= SMB2_NT_FIND
,
5107 .cap_large_files
= SMB2_LARGE_FILES
,
5108 .signing_enabled
= SMB2_NEGOTIATE_SIGNING_ENABLED
| SMB2_NEGOTIATE_SIGNING_REQUIRED
,
5109 .signing_required
= SMB2_NEGOTIATE_SIGNING_REQUIRED
,
5110 .create_lease_size
= sizeof(struct create_lease
),
5113 struct smb_version_values smb21_values
= {
5114 .version_string
= SMB21_VERSION_STRING
,
5115 .protocol_id
= SMB21_PROT_ID
,
5116 .req_capabilities
= 0, /* MBZ on negotiate req until SMB3 dialect */
5117 .large_lock_type
= 0,
5118 .exclusive_lock_type
= SMB2_LOCKFLAG_EXCLUSIVE_LOCK
,
5119 .shared_lock_type
= SMB2_LOCKFLAG_SHARED_LOCK
,
5120 .unlock_lock_type
= SMB2_LOCKFLAG_UNLOCK
,
5121 .header_size
= sizeof(struct smb2_sync_hdr
),
5122 .header_preamble_size
= 0,
5123 .max_header_size
= MAX_SMB2_HDR_SIZE
,
5124 .read_rsp_size
= sizeof(struct smb2_read_rsp
) - 1,
5125 .lock_cmd
= SMB2_LOCK
,
5127 .cap_nt_find
= SMB2_NT_FIND
,
5128 .cap_large_files
= SMB2_LARGE_FILES
,
5129 .signing_enabled
= SMB2_NEGOTIATE_SIGNING_ENABLED
| SMB2_NEGOTIATE_SIGNING_REQUIRED
,
5130 .signing_required
= SMB2_NEGOTIATE_SIGNING_REQUIRED
,
5131 .create_lease_size
= sizeof(struct create_lease
),
5134 struct smb_version_values smb3any_values
= {
5135 .version_string
= SMB3ANY_VERSION_STRING
,
5136 .protocol_id
= SMB302_PROT_ID
, /* doesn't matter, send protocol array */
5137 .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
,
5138 .large_lock_type
= 0,
5139 .exclusive_lock_type
= SMB2_LOCKFLAG_EXCLUSIVE_LOCK
,
5140 .shared_lock_type
= SMB2_LOCKFLAG_SHARED_LOCK
,
5141 .unlock_lock_type
= SMB2_LOCKFLAG_UNLOCK
,
5142 .header_size
= sizeof(struct smb2_sync_hdr
),
5143 .header_preamble_size
= 0,
5144 .max_header_size
= MAX_SMB2_HDR_SIZE
,
5145 .read_rsp_size
= sizeof(struct smb2_read_rsp
) - 1,
5146 .lock_cmd
= SMB2_LOCK
,
5148 .cap_nt_find
= SMB2_NT_FIND
,
5149 .cap_large_files
= SMB2_LARGE_FILES
,
5150 .signing_enabled
= SMB2_NEGOTIATE_SIGNING_ENABLED
| SMB2_NEGOTIATE_SIGNING_REQUIRED
,
5151 .signing_required
= SMB2_NEGOTIATE_SIGNING_REQUIRED
,
5152 .create_lease_size
= sizeof(struct create_lease_v2
),
5155 struct smb_version_values smbdefault_values
= {
5156 .version_string
= SMBDEFAULT_VERSION_STRING
,
5157 .protocol_id
= SMB302_PROT_ID
, /* doesn't matter, send protocol array */
5158 .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
,
5159 .large_lock_type
= 0,
5160 .exclusive_lock_type
= SMB2_LOCKFLAG_EXCLUSIVE_LOCK
,
5161 .shared_lock_type
= SMB2_LOCKFLAG_SHARED_LOCK
,
5162 .unlock_lock_type
= SMB2_LOCKFLAG_UNLOCK
,
5163 .header_size
= sizeof(struct smb2_sync_hdr
),
5164 .header_preamble_size
= 0,
5165 .max_header_size
= MAX_SMB2_HDR_SIZE
,
5166 .read_rsp_size
= sizeof(struct smb2_read_rsp
) - 1,
5167 .lock_cmd
= SMB2_LOCK
,
5169 .cap_nt_find
= SMB2_NT_FIND
,
5170 .cap_large_files
= SMB2_LARGE_FILES
,
5171 .signing_enabled
= SMB2_NEGOTIATE_SIGNING_ENABLED
| SMB2_NEGOTIATE_SIGNING_REQUIRED
,
5172 .signing_required
= SMB2_NEGOTIATE_SIGNING_REQUIRED
,
5173 .create_lease_size
= sizeof(struct create_lease_v2
),
5176 struct smb_version_values smb30_values
= {
5177 .version_string
= SMB30_VERSION_STRING
,
5178 .protocol_id
= SMB30_PROT_ID
,
5179 .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
,
5180 .large_lock_type
= 0,
5181 .exclusive_lock_type
= SMB2_LOCKFLAG_EXCLUSIVE_LOCK
,
5182 .shared_lock_type
= SMB2_LOCKFLAG_SHARED_LOCK
,
5183 .unlock_lock_type
= SMB2_LOCKFLAG_UNLOCK
,
5184 .header_size
= sizeof(struct smb2_sync_hdr
),
5185 .header_preamble_size
= 0,
5186 .max_header_size
= MAX_SMB2_HDR_SIZE
,
5187 .read_rsp_size
= sizeof(struct smb2_read_rsp
) - 1,
5188 .lock_cmd
= SMB2_LOCK
,
5190 .cap_nt_find
= SMB2_NT_FIND
,
5191 .cap_large_files
= SMB2_LARGE_FILES
,
5192 .signing_enabled
= SMB2_NEGOTIATE_SIGNING_ENABLED
| SMB2_NEGOTIATE_SIGNING_REQUIRED
,
5193 .signing_required
= SMB2_NEGOTIATE_SIGNING_REQUIRED
,
5194 .create_lease_size
= sizeof(struct create_lease_v2
),
5197 struct smb_version_values smb302_values
= {
5198 .version_string
= SMB302_VERSION_STRING
,
5199 .protocol_id
= SMB302_PROT_ID
,
5200 .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
,
5201 .large_lock_type
= 0,
5202 .exclusive_lock_type
= SMB2_LOCKFLAG_EXCLUSIVE_LOCK
,
5203 .shared_lock_type
= SMB2_LOCKFLAG_SHARED_LOCK
,
5204 .unlock_lock_type
= SMB2_LOCKFLAG_UNLOCK
,
5205 .header_size
= sizeof(struct smb2_sync_hdr
),
5206 .header_preamble_size
= 0,
5207 .max_header_size
= MAX_SMB2_HDR_SIZE
,
5208 .read_rsp_size
= sizeof(struct smb2_read_rsp
) - 1,
5209 .lock_cmd
= SMB2_LOCK
,
5211 .cap_nt_find
= SMB2_NT_FIND
,
5212 .cap_large_files
= SMB2_LARGE_FILES
,
5213 .signing_enabled
= SMB2_NEGOTIATE_SIGNING_ENABLED
| SMB2_NEGOTIATE_SIGNING_REQUIRED
,
5214 .signing_required
= SMB2_NEGOTIATE_SIGNING_REQUIRED
,
5215 .create_lease_size
= sizeof(struct create_lease_v2
),
5218 struct smb_version_values smb311_values
= {
5219 .version_string
= SMB311_VERSION_STRING
,
5220 .protocol_id
= SMB311_PROT_ID
,
5221 .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
,
5222 .large_lock_type
= 0,
5223 .exclusive_lock_type
= SMB2_LOCKFLAG_EXCLUSIVE_LOCK
,
5224 .shared_lock_type
= SMB2_LOCKFLAG_SHARED_LOCK
,
5225 .unlock_lock_type
= SMB2_LOCKFLAG_UNLOCK
,
5226 .header_size
= sizeof(struct smb2_sync_hdr
),
5227 .header_preamble_size
= 0,
5228 .max_header_size
= MAX_SMB2_HDR_SIZE
,
5229 .read_rsp_size
= sizeof(struct smb2_read_rsp
) - 1,
5230 .lock_cmd
= SMB2_LOCK
,
5232 .cap_nt_find
= SMB2_NT_FIND
,
5233 .cap_large_files
= SMB2_LARGE_FILES
,
5234 .signing_enabled
= SMB2_NEGOTIATE_SIGNING_ENABLED
| SMB2_NEGOTIATE_SIGNING_REQUIRED
,
5235 .signing_required
= SMB2_NEGOTIATE_SIGNING_REQUIRED
,
5236 .create_lease_size
= sizeof(struct create_lease_v2
),