2 * SMB2 version specific operations
4 * Copyright (c) 2012, Jeff Layton <jlayton@redhat.com>
6 * This library is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License v2 as published
8 * by the Free Software Foundation.
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
13 * the GNU Lesser General Public License for more details.
15 * You should have received a copy of the GNU Lesser General Public License
16 * along with this library; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 #include <linux/pagemap.h>
21 #include <linux/vfs.h>
22 #include <linux/falloc.h>
23 #include <linux/scatterlist.h>
24 #include <linux/uuid.h>
25 #include <crypto/aead.h>
28 #include "smb2proto.h"
29 #include "cifsproto.h"
30 #include "cifs_debug.h"
31 #include "cifs_unicode.h"
32 #include "smb2status.h"
34 #include "cifs_ioctl.h"
35 #include "smbdirect.h"
38 change_conf(struct TCP_Server_Info
*server
)
40 server
->credits
+= server
->echo_credits
+ server
->oplock_credits
;
41 server
->oplock_credits
= server
->echo_credits
= 0;
42 switch (server
->credits
) {
46 server
->echoes
= false;
47 server
->oplocks
= false;
48 cifs_dbg(VFS
, "disabling echoes and oplocks\n");
51 server
->echoes
= true;
52 server
->oplocks
= false;
53 server
->echo_credits
= 1;
54 cifs_dbg(FYI
, "disabling oplocks\n");
57 server
->echoes
= true;
59 server
->oplocks
= true;
60 server
->oplock_credits
= 1;
62 server
->oplocks
= false;
64 server
->echo_credits
= 1;
66 server
->credits
-= server
->echo_credits
+ server
->oplock_credits
;
71 smb2_add_credits(struct TCP_Server_Info
*server
, const unsigned int add
,
75 spin_lock(&server
->req_lock
);
76 val
= server
->ops
->get_credits_field(server
, optype
);
79 *val
= 65000; /* Don't get near 64K credits, avoid srv bugs */
80 printk_once(KERN_WARNING
"server overflowed SMB3 credits\n");
83 if (server
->in_flight
== 0 && (optype
& CIFS_OP_MASK
) != CIFS_NEG_OP
)
84 rc
= change_conf(server
);
86 * Sometimes server returns 0 credits on oplock break ack - we need to
87 * rebalance credits in this case.
89 else if (server
->in_flight
> 0 && server
->oplock_credits
== 0 &&
91 if (server
->credits
> 1) {
93 server
->oplock_credits
++;
96 spin_unlock(&server
->req_lock
);
97 wake_up(&server
->request_q
);
99 cifs_reconnect(server
);
103 smb2_set_credits(struct TCP_Server_Info
*server
, const int val
)
105 spin_lock(&server
->req_lock
);
106 server
->credits
= val
;
107 spin_unlock(&server
->req_lock
);
111 smb2_get_credits_field(struct TCP_Server_Info
*server
, const int optype
)
115 return &server
->echo_credits
;
117 return &server
->oplock_credits
;
119 return &server
->credits
;
124 smb2_get_credits(struct mid_q_entry
*mid
)
126 struct smb2_sync_hdr
*shdr
= (struct smb2_sync_hdr
*)mid
->resp_buf
;
128 return le16_to_cpu(shdr
->CreditRequest
);
132 smb2_wait_mtu_credits(struct TCP_Server_Info
*server
, unsigned int size
,
133 unsigned int *num
, unsigned int *credits
)
136 unsigned int scredits
;
138 spin_lock(&server
->req_lock
);
140 if (server
->credits
<= 0) {
141 spin_unlock(&server
->req_lock
);
142 cifs_num_waiters_inc(server
);
143 rc
= wait_event_killable(server
->request_q
,
144 has_credits(server
, &server
->credits
));
145 cifs_num_waiters_dec(server
);
148 spin_lock(&server
->req_lock
);
150 if (server
->tcpStatus
== CifsExiting
) {
151 spin_unlock(&server
->req_lock
);
155 scredits
= server
->credits
;
156 /* can deadlock with reopen */
158 *num
= SMB2_MAX_BUFFER_SIZE
;
163 /* leave one credit for a possible reopen */
165 *num
= min_t(unsigned int, size
,
166 scredits
* SMB2_MAX_BUFFER_SIZE
);
168 *credits
= DIV_ROUND_UP(*num
, SMB2_MAX_BUFFER_SIZE
);
169 server
->credits
-= *credits
;
174 spin_unlock(&server
->req_lock
);
179 smb2_get_next_mid(struct TCP_Server_Info
*server
)
182 /* for SMB2 we need the current value */
183 spin_lock(&GlobalMid_Lock
);
184 mid
= server
->CurrentMid
++;
185 spin_unlock(&GlobalMid_Lock
);
189 static struct mid_q_entry
*
190 smb2_find_mid(struct TCP_Server_Info
*server
, char *buf
)
192 struct mid_q_entry
*mid
;
193 struct smb2_sync_hdr
*shdr
= (struct smb2_sync_hdr
*)buf
;
194 __u64 wire_mid
= le64_to_cpu(shdr
->MessageId
);
196 if (shdr
->ProtocolId
== SMB2_TRANSFORM_PROTO_NUM
) {
197 cifs_dbg(VFS
, "encrypted frame parsing not supported yet");
201 spin_lock(&GlobalMid_Lock
);
202 list_for_each_entry(mid
, &server
->pending_mid_q
, qhead
) {
203 if ((mid
->mid
== wire_mid
) &&
204 (mid
->mid_state
== MID_REQUEST_SUBMITTED
) &&
205 (mid
->command
== shdr
->Command
)) {
206 kref_get(&mid
->refcount
);
207 spin_unlock(&GlobalMid_Lock
);
211 spin_unlock(&GlobalMid_Lock
);
216 smb2_dump_detail(void *buf
, struct TCP_Server_Info
*server
)
218 #ifdef CONFIG_CIFS_DEBUG2
219 struct smb2_sync_hdr
*shdr
= (struct smb2_sync_hdr
*)buf
;
221 cifs_dbg(VFS
, "Cmd: %d Err: 0x%x Flags: 0x%x Mid: %llu Pid: %d\n",
222 shdr
->Command
, shdr
->Status
, shdr
->Flags
, shdr
->MessageId
,
224 cifs_dbg(VFS
, "smb buf %p len %u\n", buf
,
225 server
->ops
->calc_smb_size(buf
, server
));
230 smb2_need_neg(struct TCP_Server_Info
*server
)
232 return server
->max_read
== 0;
236 smb2_negotiate(const unsigned int xid
, struct cifs_ses
*ses
)
239 ses
->server
->CurrentMid
= 0;
240 rc
= SMB2_negotiate(xid
, ses
);
241 /* BB we probably don't need to retry with modern servers */
248 smb2_negotiate_wsize(struct cifs_tcon
*tcon
, struct smb_vol
*volume_info
)
250 struct TCP_Server_Info
*server
= tcon
->ses
->server
;
253 /* start with specified wsize, or default */
254 wsize
= volume_info
->wsize
? volume_info
->wsize
: CIFS_DEFAULT_IOSIZE
;
255 wsize
= min_t(unsigned int, wsize
, server
->max_write
);
256 #ifdef CONFIG_CIFS_SMB_DIRECT
259 wsize
= min_t(unsigned int,
260 wsize
, server
->smbd_conn
->max_fragmented_send_size
);
262 wsize
= min_t(unsigned int,
263 wsize
, server
->smbd_conn
->max_readwrite_size
);
266 if (!(server
->capabilities
& SMB2_GLOBAL_CAP_LARGE_MTU
))
267 wsize
= min_t(unsigned int, wsize
, SMB2_MAX_BUFFER_SIZE
);
273 smb2_negotiate_rsize(struct cifs_tcon
*tcon
, struct smb_vol
*volume_info
)
275 struct TCP_Server_Info
*server
= tcon
->ses
->server
;
278 /* start with specified rsize, or default */
279 rsize
= volume_info
->rsize
? volume_info
->rsize
: CIFS_DEFAULT_IOSIZE
;
280 rsize
= min_t(unsigned int, rsize
, server
->max_read
);
281 #ifdef CONFIG_CIFS_SMB_DIRECT
284 rsize
= min_t(unsigned int,
285 rsize
, server
->smbd_conn
->max_fragmented_recv_size
);
287 rsize
= min_t(unsigned int,
288 rsize
, server
->smbd_conn
->max_readwrite_size
);
292 if (!(server
->capabilities
& SMB2_GLOBAL_CAP_LARGE_MTU
))
293 rsize
= min_t(unsigned int, rsize
, SMB2_MAX_BUFFER_SIZE
);
300 parse_server_interfaces(struct network_interface_info_ioctl_rsp
*buf
,
302 struct cifs_server_iface
**iface_list
,
305 struct network_interface_info_ioctl_rsp
*p
;
306 struct sockaddr_in
*addr4
;
307 struct sockaddr_in6
*addr6
;
308 struct iface_info_ipv4
*p4
;
309 struct iface_info_ipv6
*p6
;
310 struct cifs_server_iface
*info
;
320 * Fist pass: count and sanity check
323 bytes_left
= buf_len
;
325 while (bytes_left
>= sizeof(*p
)) {
327 next
= le32_to_cpu(p
->Next
);
329 bytes_left
-= sizeof(*p
);
332 p
= (struct network_interface_info_ioctl_rsp
*)((u8
*)p
+next
);
337 cifs_dbg(VFS
, "%s: malformed interface info\n", __func__
);
342 if (bytes_left
|| p
->Next
)
343 cifs_dbg(VFS
, "%s: incomplete interface info\n", __func__
);
347 * Second pass: extract info to internal structure
350 *iface_list
= kcalloc(nb_iface
, sizeof(**iface_list
), GFP_KERNEL
);
357 bytes_left
= buf_len
;
359 while (bytes_left
>= sizeof(*p
)) {
360 info
->speed
= le64_to_cpu(p
->LinkSpeed
);
361 info
->rdma_capable
= le32_to_cpu(p
->Capability
& RDMA_CAPABLE
);
362 info
->rss_capable
= le32_to_cpu(p
->Capability
& RSS_CAPABLE
);
364 cifs_dbg(FYI
, "%s: adding iface %zu\n", __func__
, *iface_count
);
365 cifs_dbg(FYI
, "%s: speed %zu bps\n", __func__
, info
->speed
);
366 cifs_dbg(FYI
, "%s: capabilities 0x%08x\n", __func__
,
367 le32_to_cpu(p
->Capability
));
371 * The kernel and wire socket structures have the same
372 * layout and use network byte order but make the
373 * conversion explicit in case either one changes.
376 addr4
= (struct sockaddr_in
*)&info
->sockaddr
;
377 p4
= (struct iface_info_ipv4
*)p
->Buffer
;
378 addr4
->sin_family
= AF_INET
;
379 memcpy(&addr4
->sin_addr
, &p4
->IPv4Address
, 4);
381 /* [MS-SMB2] 2.2.32.5.1.1 Clients MUST ignore these */
382 addr4
->sin_port
= cpu_to_be16(CIFS_PORT
);
384 cifs_dbg(FYI
, "%s: ipv4 %pI4\n", __func__
,
388 addr6
= (struct sockaddr_in6
*)&info
->sockaddr
;
389 p6
= (struct iface_info_ipv6
*)p
->Buffer
;
390 addr6
->sin6_family
= AF_INET6
;
391 memcpy(&addr6
->sin6_addr
, &p6
->IPv6Address
, 16);
393 /* [MS-SMB2] 2.2.32.5.1.2 Clients MUST ignore these */
394 addr6
->sin6_flowinfo
= 0;
395 addr6
->sin6_scope_id
= 0;
396 addr6
->sin6_port
= cpu_to_be16(CIFS_PORT
);
398 cifs_dbg(FYI
, "%s: ipv6 %pI6\n", __func__
,
403 "%s: skipping unsupported socket family\n",
411 next
= le32_to_cpu(p
->Next
);
414 p
= (struct network_interface_info_ioctl_rsp
*)((u8
*)p
+next
);
434 SMB3_request_interfaces(const unsigned int xid
, struct cifs_tcon
*tcon
)
437 unsigned int ret_data_len
= 0;
438 struct network_interface_info_ioctl_rsp
*out_buf
= NULL
;
439 struct cifs_server_iface
*iface_list
;
441 struct cifs_ses
*ses
= tcon
->ses
;
443 rc
= SMB2_ioctl(xid
, tcon
, NO_FILE_ID
, NO_FILE_ID
,
444 FSCTL_QUERY_NETWORK_INTERFACE_INFO
, true /* is_fsctl */,
445 NULL
/* no data input */, 0 /* no data input */,
446 (char **)&out_buf
, &ret_data_len
);
447 if (rc
== -EOPNOTSUPP
) {
449 "server does not support query network interfaces\n");
451 } else if (rc
!= 0) {
452 cifs_dbg(VFS
, "error %d on ioctl to get interface list\n", rc
);
456 rc
= parse_server_interfaces(out_buf
, ret_data_len
,
457 &iface_list
, &iface_count
);
461 spin_lock(&ses
->iface_lock
);
462 kfree(ses
->iface_list
);
463 ses
->iface_list
= iface_list
;
464 ses
->iface_count
= iface_count
;
465 ses
->iface_last_update
= jiffies
;
466 spin_unlock(&ses
->iface_lock
);
474 smb2_close_cached_fid(struct kref
*ref
)
476 struct cached_fid
*cfid
= container_of(ref
, struct cached_fid
,
479 if (cfid
->is_valid
) {
480 cifs_dbg(FYI
, "clear cached root file handle\n");
481 SMB2_close(0, cfid
->tcon
, cfid
->fid
->persistent_fid
,
482 cfid
->fid
->volatile_fid
);
483 cfid
->is_valid
= false;
487 void close_shroot(struct cached_fid
*cfid
)
489 mutex_lock(&cfid
->fid_mutex
);
490 kref_put(&cfid
->refcount
, smb2_close_cached_fid
);
491 mutex_unlock(&cfid
->fid_mutex
);
495 smb2_cached_lease_break(struct work_struct
*work
)
497 struct cached_fid
*cfid
= container_of(work
,
498 struct cached_fid
, lease_break
);
504 * Open the directory at the root of a share
506 int open_shroot(unsigned int xid
, struct cifs_tcon
*tcon
, struct cifs_fid
*pfid
)
508 struct cifs_open_parms oparams
;
510 __le16 srch_path
= 0; /* Null - since an open of top of share */
511 u8 oplock
= SMB2_OPLOCK_LEVEL_II
;
513 mutex_lock(&tcon
->crfid
.fid_mutex
);
514 if (tcon
->crfid
.is_valid
) {
515 cifs_dbg(FYI
, "found a cached root file handle\n");
516 memcpy(pfid
, tcon
->crfid
.fid
, sizeof(struct cifs_fid
));
517 kref_get(&tcon
->crfid
.refcount
);
518 mutex_unlock(&tcon
->crfid
.fid_mutex
);
523 oparams
.create_options
= 0;
524 oparams
.desired_access
= FILE_READ_ATTRIBUTES
;
525 oparams
.disposition
= FILE_OPEN
;
527 oparams
.reconnect
= false;
529 rc
= SMB2_open(xid
, &oparams
, &srch_path
, &oplock
, NULL
, NULL
, NULL
);
531 memcpy(tcon
->crfid
.fid
, pfid
, sizeof(struct cifs_fid
));
532 tcon
->crfid
.tcon
= tcon
;
533 tcon
->crfid
.is_valid
= true;
534 kref_init(&tcon
->crfid
.refcount
);
535 kref_get(&tcon
->crfid
.refcount
);
537 mutex_unlock(&tcon
->crfid
.fid_mutex
);
542 smb3_qfs_tcon(const unsigned int xid
, struct cifs_tcon
*tcon
)
545 __le16 srch_path
= 0; /* Null - open root of share */
546 u8 oplock
= SMB2_OPLOCK_LEVEL_NONE
;
547 struct cifs_open_parms oparms
;
549 bool no_cached_open
= tcon
->nohandlecache
;
552 oparms
.desired_access
= FILE_READ_ATTRIBUTES
;
553 oparms
.disposition
= FILE_OPEN
;
554 oparms
.create_options
= 0;
556 oparms
.reconnect
= false;
559 rc
= SMB2_open(xid
, &oparms
, &srch_path
, &oplock
, NULL
, NULL
,
562 rc
= open_shroot(xid
, tcon
, &fid
);
567 SMB3_request_interfaces(xid
, tcon
);
569 SMB2_QFS_attr(xid
, tcon
, fid
.persistent_fid
, fid
.volatile_fid
,
570 FS_ATTRIBUTE_INFORMATION
);
571 SMB2_QFS_attr(xid
, tcon
, fid
.persistent_fid
, fid
.volatile_fid
,
572 FS_DEVICE_INFORMATION
);
573 SMB2_QFS_attr(xid
, tcon
, fid
.persistent_fid
, fid
.volatile_fid
,
574 FS_VOLUME_INFORMATION
);
575 SMB2_QFS_attr(xid
, tcon
, fid
.persistent_fid
, fid
.volatile_fid
,
576 FS_SECTOR_SIZE_INFORMATION
); /* SMB3 specific */
578 SMB2_close(xid
, tcon
, fid
.persistent_fid
, fid
.volatile_fid
);
580 close_shroot(&tcon
->crfid
);
586 smb2_qfs_tcon(const unsigned int xid
, struct cifs_tcon
*tcon
)
589 __le16 srch_path
= 0; /* Null - open root of share */
590 u8 oplock
= SMB2_OPLOCK_LEVEL_NONE
;
591 struct cifs_open_parms oparms
;
595 oparms
.desired_access
= FILE_READ_ATTRIBUTES
;
596 oparms
.disposition
= FILE_OPEN
;
597 oparms
.create_options
= 0;
599 oparms
.reconnect
= false;
601 rc
= SMB2_open(xid
, &oparms
, &srch_path
, &oplock
, NULL
, NULL
, NULL
);
605 SMB2_QFS_attr(xid
, tcon
, fid
.persistent_fid
, fid
.volatile_fid
,
606 FS_ATTRIBUTE_INFORMATION
);
607 SMB2_QFS_attr(xid
, tcon
, fid
.persistent_fid
, fid
.volatile_fid
,
608 FS_DEVICE_INFORMATION
);
609 SMB2_close(xid
, tcon
, fid
.persistent_fid
, fid
.volatile_fid
);
614 smb2_is_path_accessible(const unsigned int xid
, struct cifs_tcon
*tcon
,
615 struct cifs_sb_info
*cifs_sb
, const char *full_path
)
619 __u8 oplock
= SMB2_OPLOCK_LEVEL_NONE
;
620 struct cifs_open_parms oparms
;
623 if ((*full_path
== 0) && tcon
->crfid
.is_valid
)
626 utf16_path
= cifs_convert_path_to_utf16(full_path
, cifs_sb
);
631 oparms
.desired_access
= FILE_READ_ATTRIBUTES
;
632 oparms
.disposition
= FILE_OPEN
;
633 if (backup_cred(cifs_sb
))
634 oparms
.create_options
= CREATE_OPEN_BACKUP_INTENT
;
636 oparms
.create_options
= 0;
638 oparms
.reconnect
= false;
640 rc
= SMB2_open(xid
, &oparms
, utf16_path
, &oplock
, NULL
, NULL
, NULL
);
646 rc
= SMB2_close(xid
, tcon
, fid
.persistent_fid
, fid
.volatile_fid
);
652 smb2_get_srv_inum(const unsigned int xid
, struct cifs_tcon
*tcon
,
653 struct cifs_sb_info
*cifs_sb
, const char *full_path
,
654 u64
*uniqueid
, FILE_ALL_INFO
*data
)
656 *uniqueid
= le64_to_cpu(data
->IndexNumber
);
661 smb2_query_file_info(const unsigned int xid
, struct cifs_tcon
*tcon
,
662 struct cifs_fid
*fid
, FILE_ALL_INFO
*data
)
665 struct smb2_file_all_info
*smb2_data
;
667 smb2_data
= kzalloc(sizeof(struct smb2_file_all_info
) + PATH_MAX
* 2,
669 if (smb2_data
== NULL
)
672 rc
= SMB2_query_info(xid
, tcon
, fid
->persistent_fid
, fid
->volatile_fid
,
675 move_smb2_info_to_cifs(data
, smb2_data
);
680 #ifdef CONFIG_CIFS_XATTR
682 move_smb2_ea_to_cifs(char *dst
, size_t dst_size
,
683 struct smb2_file_full_ea_info
*src
, size_t src_size
,
684 const unsigned char *ea_name
)
687 unsigned int ea_name_len
= ea_name
? strlen(ea_name
) : 0;
689 size_t name_len
, value_len
, user_name_len
;
691 while (src_size
> 0) {
692 name
= &src
->ea_data
[0];
693 name_len
= (size_t)src
->ea_name_length
;
694 value
= &src
->ea_data
[src
->ea_name_length
+ 1];
695 value_len
= (size_t)le16_to_cpu(src
->ea_value_length
);
701 if (src_size
< 8 + name_len
+ 1 + value_len
) {
702 cifs_dbg(FYI
, "EA entry goes beyond length of list\n");
708 if (ea_name_len
== name_len
&&
709 memcmp(ea_name
, name
, name_len
) == 0) {
713 if (dst_size
< value_len
) {
717 memcpy(dst
, value
, value_len
);
721 /* 'user.' plus a terminating null */
722 user_name_len
= 5 + 1 + name_len
;
726 if (dst_size
>= user_name_len
) {
727 dst_size
-= user_name_len
;
728 memcpy(dst
, "user.", 5);
730 memcpy(dst
, src
->ea_data
, name_len
);
734 } else if (dst_size
== 0) {
735 /* skip copy - calc size only */
737 /* stop before overrun buffer */
743 if (!src
->next_entry_offset
)
746 if (src_size
< le32_to_cpu(src
->next_entry_offset
)) {
747 /* stop before overrun buffer */
751 src_size
-= le32_to_cpu(src
->next_entry_offset
);
752 src
= (void *)((char *)src
+
753 le32_to_cpu(src
->next_entry_offset
));
756 /* didn't find the named attribute */
765 smb2_query_eas(const unsigned int xid
, struct cifs_tcon
*tcon
,
766 const unsigned char *path
, const unsigned char *ea_name
,
767 char *ea_data
, size_t buf_size
,
768 struct cifs_sb_info
*cifs_sb
)
772 __u8 oplock
= SMB2_OPLOCK_LEVEL_NONE
;
773 struct cifs_open_parms oparms
;
775 struct smb2_file_full_ea_info
*smb2_data
;
776 int ea_buf_size
= SMB2_MIN_EA_BUF
;
778 utf16_path
= cifs_convert_path_to_utf16(path
, cifs_sb
);
783 oparms
.desired_access
= FILE_READ_EA
;
784 oparms
.disposition
= FILE_OPEN
;
785 if (backup_cred(cifs_sb
))
786 oparms
.create_options
= CREATE_OPEN_BACKUP_INTENT
;
788 oparms
.create_options
= 0;
790 oparms
.reconnect
= false;
792 rc
= SMB2_open(xid
, &oparms
, utf16_path
, &oplock
, NULL
, NULL
, NULL
);
795 cifs_dbg(FYI
, "open failed rc=%d\n", rc
);
800 smb2_data
= kzalloc(ea_buf_size
, GFP_KERNEL
);
801 if (smb2_data
== NULL
) {
802 SMB2_close(xid
, tcon
, fid
.persistent_fid
,
807 rc
= SMB2_query_eas(xid
, tcon
, fid
.persistent_fid
,
809 ea_buf_size
, smb2_data
);
817 if (ea_buf_size
> SMB2_MAX_EA_BUF
) {
818 cifs_dbg(VFS
, "EA size is too large\n");
819 SMB2_close(xid
, tcon
, fid
.persistent_fid
,
825 SMB2_close(xid
, tcon
, fid
.persistent_fid
, fid
.volatile_fid
);
828 * If ea_name is NULL (listxattr) and there are no EAs, return 0 as it's
829 * not an error. Otherwise, the specified ea_name was not found.
832 rc
= move_smb2_ea_to_cifs(ea_data
, buf_size
, smb2_data
,
833 SMB2_MAX_EA_BUF
, ea_name
);
834 else if (!ea_name
&& rc
== -ENODATA
)
843 smb2_set_ea(const unsigned int xid
, struct cifs_tcon
*tcon
,
844 const char *path
, const char *ea_name
, const void *ea_value
,
845 const __u16 ea_value_len
, const struct nls_table
*nls_codepage
,
846 struct cifs_sb_info
*cifs_sb
)
850 __u8 oplock
= SMB2_OPLOCK_LEVEL_NONE
;
851 struct cifs_open_parms oparms
;
853 struct smb2_file_full_ea_info
*ea
;
854 int ea_name_len
= strlen(ea_name
);
857 if (ea_name_len
> 255)
860 utf16_path
= cifs_convert_path_to_utf16(path
, cifs_sb
);
865 oparms
.desired_access
= FILE_WRITE_EA
;
866 oparms
.disposition
= FILE_OPEN
;
867 if (backup_cred(cifs_sb
))
868 oparms
.create_options
= CREATE_OPEN_BACKUP_INTENT
;
870 oparms
.create_options
= 0;
872 oparms
.reconnect
= false;
874 rc
= SMB2_open(xid
, &oparms
, utf16_path
, &oplock
, NULL
, NULL
, NULL
);
877 cifs_dbg(FYI
, "open failed rc=%d\n", rc
);
881 len
= sizeof(ea
) + ea_name_len
+ ea_value_len
+ 1;
882 ea
= kzalloc(len
, GFP_KERNEL
);
884 SMB2_close(xid
, tcon
, fid
.persistent_fid
, fid
.volatile_fid
);
888 ea
->ea_name_length
= ea_name_len
;
889 ea
->ea_value_length
= cpu_to_le16(ea_value_len
);
890 memcpy(ea
->ea_data
, ea_name
, ea_name_len
+ 1);
891 memcpy(ea
->ea_data
+ ea_name_len
+ 1, ea_value
, ea_value_len
);
893 rc
= SMB2_set_ea(xid
, tcon
, fid
.persistent_fid
, fid
.volatile_fid
, ea
,
897 SMB2_close(xid
, tcon
, fid
.persistent_fid
, fid
.volatile_fid
);
904 smb2_can_echo(struct TCP_Server_Info
*server
)
906 return server
->echoes
;
910 smb2_clear_stats(struct cifs_tcon
*tcon
)
913 for (i
= 0; i
< NUMBER_OF_SMB2_COMMANDS
; i
++) {
914 atomic_set(&tcon
->stats
.smb2_stats
.smb2_com_sent
[i
], 0);
915 atomic_set(&tcon
->stats
.smb2_stats
.smb2_com_failed
[i
], 0);
920 smb2_dump_share_caps(struct seq_file
*m
, struct cifs_tcon
*tcon
)
922 seq_puts(m
, "\n\tShare Capabilities:");
923 if (tcon
->capabilities
& SMB2_SHARE_CAP_DFS
)
924 seq_puts(m
, " DFS,");
925 if (tcon
->capabilities
& SMB2_SHARE_CAP_CONTINUOUS_AVAILABILITY
)
926 seq_puts(m
, " CONTINUOUS AVAILABILITY,");
927 if (tcon
->capabilities
& SMB2_SHARE_CAP_SCALEOUT
)
928 seq_puts(m
, " SCALEOUT,");
929 if (tcon
->capabilities
& SMB2_SHARE_CAP_CLUSTER
)
930 seq_puts(m
, " CLUSTER,");
931 if (tcon
->capabilities
& SMB2_SHARE_CAP_ASYMMETRIC
)
932 seq_puts(m
, " ASYMMETRIC,");
933 if (tcon
->capabilities
== 0)
934 seq_puts(m
, " None");
935 if (tcon
->ss_flags
& SSINFO_FLAGS_ALIGNED_DEVICE
)
936 seq_puts(m
, " Aligned,");
937 if (tcon
->ss_flags
& SSINFO_FLAGS_PARTITION_ALIGNED_ON_DEVICE
)
938 seq_puts(m
, " Partition Aligned,");
939 if (tcon
->ss_flags
& SSINFO_FLAGS_NO_SEEK_PENALTY
)
940 seq_puts(m
, " SSD,");
941 if (tcon
->ss_flags
& SSINFO_FLAGS_TRIM_ENABLED
)
942 seq_puts(m
, " TRIM-support,");
944 seq_printf(m
, "\tShare Flags: 0x%x", tcon
->share_flags
);
945 seq_printf(m
, "\n\ttid: 0x%x", tcon
->tid
);
946 if (tcon
->perf_sector_size
)
947 seq_printf(m
, "\tOptimal sector size: 0x%x",
948 tcon
->perf_sector_size
);
949 seq_printf(m
, "\tMaximal Access: 0x%x", tcon
->maximal_access
);
953 smb2_print_stats(struct seq_file
*m
, struct cifs_tcon
*tcon
)
955 atomic_t
*sent
= tcon
->stats
.smb2_stats
.smb2_com_sent
;
956 atomic_t
*failed
= tcon
->stats
.smb2_stats
.smb2_com_failed
;
959 * Can't display SMB2_NEGOTIATE, SESSION_SETUP, LOGOFF, CANCEL and ECHO
960 * totals (requests sent) since those SMBs are per-session not per tcon
962 seq_printf(m
, "\nBytes read: %llu Bytes written: %llu",
963 (long long)(tcon
->bytes_read
),
964 (long long)(tcon
->bytes_written
));
965 seq_printf(m
, "\nTreeConnects: %d total %d failed",
966 atomic_read(&sent
[SMB2_TREE_CONNECT_HE
]),
967 atomic_read(&failed
[SMB2_TREE_CONNECT_HE
]));
968 seq_printf(m
, "\nTreeDisconnects: %d total %d failed",
969 atomic_read(&sent
[SMB2_TREE_DISCONNECT_HE
]),
970 atomic_read(&failed
[SMB2_TREE_DISCONNECT_HE
]));
971 seq_printf(m
, "\nCreates: %d total %d failed",
972 atomic_read(&sent
[SMB2_CREATE_HE
]),
973 atomic_read(&failed
[SMB2_CREATE_HE
]));
974 seq_printf(m
, "\nCloses: %d total %d failed",
975 atomic_read(&sent
[SMB2_CLOSE_HE
]),
976 atomic_read(&failed
[SMB2_CLOSE_HE
]));
977 seq_printf(m
, "\nFlushes: %d total %d failed",
978 atomic_read(&sent
[SMB2_FLUSH_HE
]),
979 atomic_read(&failed
[SMB2_FLUSH_HE
]));
980 seq_printf(m
, "\nReads: %d total %d failed",
981 atomic_read(&sent
[SMB2_READ_HE
]),
982 atomic_read(&failed
[SMB2_READ_HE
]));
983 seq_printf(m
, "\nWrites: %d total %d failed",
984 atomic_read(&sent
[SMB2_WRITE_HE
]),
985 atomic_read(&failed
[SMB2_WRITE_HE
]));
986 seq_printf(m
, "\nLocks: %d total %d failed",
987 atomic_read(&sent
[SMB2_LOCK_HE
]),
988 atomic_read(&failed
[SMB2_LOCK_HE
]));
989 seq_printf(m
, "\nIOCTLs: %d total %d failed",
990 atomic_read(&sent
[SMB2_IOCTL_HE
]),
991 atomic_read(&failed
[SMB2_IOCTL_HE
]));
992 seq_printf(m
, "\nQueryDirectories: %d total %d failed",
993 atomic_read(&sent
[SMB2_QUERY_DIRECTORY_HE
]),
994 atomic_read(&failed
[SMB2_QUERY_DIRECTORY_HE
]));
995 seq_printf(m
, "\nChangeNotifies: %d total %d failed",
996 atomic_read(&sent
[SMB2_CHANGE_NOTIFY_HE
]),
997 atomic_read(&failed
[SMB2_CHANGE_NOTIFY_HE
]));
998 seq_printf(m
, "\nQueryInfos: %d total %d failed",
999 atomic_read(&sent
[SMB2_QUERY_INFO_HE
]),
1000 atomic_read(&failed
[SMB2_QUERY_INFO_HE
]));
1001 seq_printf(m
, "\nSetInfos: %d total %d failed",
1002 atomic_read(&sent
[SMB2_SET_INFO_HE
]),
1003 atomic_read(&failed
[SMB2_SET_INFO_HE
]));
1004 seq_printf(m
, "\nOplockBreaks: %d sent %d failed",
1005 atomic_read(&sent
[SMB2_OPLOCK_BREAK_HE
]),
1006 atomic_read(&failed
[SMB2_OPLOCK_BREAK_HE
]));
1010 smb2_set_fid(struct cifsFileInfo
*cfile
, struct cifs_fid
*fid
, __u32 oplock
)
1012 struct cifsInodeInfo
*cinode
= CIFS_I(d_inode(cfile
->dentry
));
1013 struct TCP_Server_Info
*server
= tlink_tcon(cfile
->tlink
)->ses
->server
;
1015 cfile
->fid
.persistent_fid
= fid
->persistent_fid
;
1016 cfile
->fid
.volatile_fid
= fid
->volatile_fid
;
1017 server
->ops
->set_oplock_level(cinode
, oplock
, fid
->epoch
,
1019 cinode
->can_cache_brlcks
= CIFS_CACHE_WRITE(cinode
);
1020 memcpy(cfile
->fid
.create_guid
, fid
->create_guid
, 16);
1024 smb2_close_file(const unsigned int xid
, struct cifs_tcon
*tcon
,
1025 struct cifs_fid
*fid
)
1027 SMB2_close(xid
, tcon
, fid
->persistent_fid
, fid
->volatile_fid
);
1031 SMB2_request_res_key(const unsigned int xid
, struct cifs_tcon
*tcon
,
1032 u64 persistent_fid
, u64 volatile_fid
,
1033 struct copychunk_ioctl
*pcchunk
)
1036 unsigned int ret_data_len
;
1037 struct resume_key_req
*res_key
;
1039 rc
= SMB2_ioctl(xid
, tcon
, persistent_fid
, volatile_fid
,
1040 FSCTL_SRV_REQUEST_RESUME_KEY
, true /* is_fsctl */,
1041 NULL
, 0 /* no input */,
1042 (char **)&res_key
, &ret_data_len
);
1045 cifs_dbg(VFS
, "refcpy ioctl error %d getting resume key\n", rc
);
1046 goto req_res_key_exit
;
1048 if (ret_data_len
< sizeof(struct resume_key_req
)) {
1049 cifs_dbg(VFS
, "Invalid refcopy resume key length\n");
1051 goto req_res_key_exit
;
1053 memcpy(pcchunk
->SourceKey
, res_key
->ResumeKey
, COPY_CHUNK_RES_KEY_SIZE
);
1061 smb2_copychunk_range(const unsigned int xid
,
1062 struct cifsFileInfo
*srcfile
,
1063 struct cifsFileInfo
*trgtfile
, u64 src_off
,
1064 u64 len
, u64 dest_off
)
1067 unsigned int ret_data_len
;
1068 struct copychunk_ioctl
*pcchunk
;
1069 struct copychunk_ioctl_rsp
*retbuf
= NULL
;
1070 struct cifs_tcon
*tcon
;
1071 int chunks_copied
= 0;
1072 bool chunk_sizes_updated
= false;
1073 ssize_t bytes_written
, total_bytes_written
= 0;
1075 pcchunk
= kmalloc(sizeof(struct copychunk_ioctl
), GFP_KERNEL
);
1077 if (pcchunk
== NULL
)
1080 cifs_dbg(FYI
, "in smb2_copychunk_range - about to call request res key\n");
1081 /* Request a key from the server to identify the source of the copy */
1082 rc
= SMB2_request_res_key(xid
, tlink_tcon(srcfile
->tlink
),
1083 srcfile
->fid
.persistent_fid
,
1084 srcfile
->fid
.volatile_fid
, pcchunk
);
1086 /* Note: request_res_key sets res_key null only if rc !=0 */
1090 /* For now array only one chunk long, will make more flexible later */
1091 pcchunk
->ChunkCount
= cpu_to_le32(1);
1092 pcchunk
->Reserved
= 0;
1093 pcchunk
->Reserved2
= 0;
1095 tcon
= tlink_tcon(trgtfile
->tlink
);
1098 pcchunk
->SourceOffset
= cpu_to_le64(src_off
);
1099 pcchunk
->TargetOffset
= cpu_to_le64(dest_off
);
1101 cpu_to_le32(min_t(u32
, len
, tcon
->max_bytes_chunk
));
1103 /* Request server copy to target from src identified by key */
1104 rc
= SMB2_ioctl(xid
, tcon
, trgtfile
->fid
.persistent_fid
,
1105 trgtfile
->fid
.volatile_fid
, FSCTL_SRV_COPYCHUNK_WRITE
,
1106 true /* is_fsctl */, (char *)pcchunk
,
1107 sizeof(struct copychunk_ioctl
), (char **)&retbuf
,
1111 sizeof(struct copychunk_ioctl_rsp
)) {
1112 cifs_dbg(VFS
, "invalid cchunk response size\n");
1116 if (retbuf
->TotalBytesWritten
== 0) {
1117 cifs_dbg(FYI
, "no bytes copied\n");
1122 * Check if server claimed to write more than we asked
1124 if (le32_to_cpu(retbuf
->TotalBytesWritten
) >
1125 le32_to_cpu(pcchunk
->Length
)) {
1126 cifs_dbg(VFS
, "invalid copy chunk response\n");
1130 if (le32_to_cpu(retbuf
->ChunksWritten
) != 1) {
1131 cifs_dbg(VFS
, "invalid num chunks written\n");
1137 bytes_written
= le32_to_cpu(retbuf
->TotalBytesWritten
);
1138 src_off
+= bytes_written
;
1139 dest_off
+= bytes_written
;
1140 len
-= bytes_written
;
1141 total_bytes_written
+= bytes_written
;
1143 cifs_dbg(FYI
, "Chunks %d PartialChunk %d Total %zu\n",
1144 le32_to_cpu(retbuf
->ChunksWritten
),
1145 le32_to_cpu(retbuf
->ChunkBytesWritten
),
1147 } else if (rc
== -EINVAL
) {
1148 if (ret_data_len
!= sizeof(struct copychunk_ioctl_rsp
))
1151 cifs_dbg(FYI
, "MaxChunks %d BytesChunk %d MaxCopy %d\n",
1152 le32_to_cpu(retbuf
->ChunksWritten
),
1153 le32_to_cpu(retbuf
->ChunkBytesWritten
),
1154 le32_to_cpu(retbuf
->TotalBytesWritten
));
1157 * Check if this is the first request using these sizes,
1158 * (ie check if copy succeed once with original sizes
1159 * and check if the server gave us different sizes after
1160 * we already updated max sizes on previous request).
1161 * if not then why is the server returning an error now
1163 if ((chunks_copied
!= 0) || chunk_sizes_updated
)
1166 /* Check that server is not asking us to grow size */
1167 if (le32_to_cpu(retbuf
->ChunkBytesWritten
) <
1168 tcon
->max_bytes_chunk
)
1169 tcon
->max_bytes_chunk
=
1170 le32_to_cpu(retbuf
->ChunkBytesWritten
);
1172 goto cchunk_out
; /* server gave us bogus size */
1174 /* No need to change MaxChunks since already set to 1 */
1175 chunk_sizes_updated
= true;
1186 return total_bytes_written
;
1190 smb2_flush_file(const unsigned int xid
, struct cifs_tcon
*tcon
,
1191 struct cifs_fid
*fid
)
1193 return SMB2_flush(xid
, tcon
, fid
->persistent_fid
, fid
->volatile_fid
);
1197 smb2_read_data_offset(char *buf
)
1199 struct smb2_read_rsp
*rsp
= (struct smb2_read_rsp
*)buf
;
1200 return rsp
->DataOffset
;
1204 smb2_read_data_length(char *buf
, bool in_remaining
)
1206 struct smb2_read_rsp
*rsp
= (struct smb2_read_rsp
*)buf
;
1209 return le32_to_cpu(rsp
->DataRemaining
);
1211 return le32_to_cpu(rsp
->DataLength
);
1216 smb2_sync_read(const unsigned int xid
, struct cifs_fid
*pfid
,
1217 struct cifs_io_parms
*parms
, unsigned int *bytes_read
,
1218 char **buf
, int *buf_type
)
1220 parms
->persistent_fid
= pfid
->persistent_fid
;
1221 parms
->volatile_fid
= pfid
->volatile_fid
;
1222 return SMB2_read(xid
, parms
, bytes_read
, buf
, buf_type
);
1226 smb2_sync_write(const unsigned int xid
, struct cifs_fid
*pfid
,
1227 struct cifs_io_parms
*parms
, unsigned int *written
,
1228 struct kvec
*iov
, unsigned long nr_segs
)
1231 parms
->persistent_fid
= pfid
->persistent_fid
;
1232 parms
->volatile_fid
= pfid
->volatile_fid
;
1233 return SMB2_write(xid
, parms
, written
, iov
, nr_segs
);
1236 /* Set or clear the SPARSE_FILE attribute based on value passed in setsparse */
1237 static bool smb2_set_sparse(const unsigned int xid
, struct cifs_tcon
*tcon
,
1238 struct cifsFileInfo
*cfile
, struct inode
*inode
, __u8 setsparse
)
1240 struct cifsInodeInfo
*cifsi
;
1243 cifsi
= CIFS_I(inode
);
1245 /* if file already sparse don't bother setting sparse again */
1246 if ((cifsi
->cifsAttrs
& FILE_ATTRIBUTE_SPARSE_FILE
) && setsparse
)
1247 return true; /* already sparse */
1249 if (!(cifsi
->cifsAttrs
& FILE_ATTRIBUTE_SPARSE_FILE
) && !setsparse
)
1250 return true; /* already not sparse */
1253 * Can't check for sparse support on share the usual way via the
1254 * FS attribute info (FILE_SUPPORTS_SPARSE_FILES) on the share
1255 * since Samba server doesn't set the flag on the share, yet
1256 * supports the set sparse FSCTL and returns sparse correctly
1257 * in the file attributes. If we fail setting sparse though we
1258 * mark that server does not support sparse files for this share
1259 * to avoid repeatedly sending the unsupported fsctl to server
1260 * if the file is repeatedly extended.
1262 if (tcon
->broken_sparse_sup
)
1265 rc
= SMB2_ioctl(xid
, tcon
, cfile
->fid
.persistent_fid
,
1266 cfile
->fid
.volatile_fid
, FSCTL_SET_SPARSE
,
1268 &setsparse
, 1, NULL
, NULL
);
1270 tcon
->broken_sparse_sup
= true;
1271 cifs_dbg(FYI
, "set sparse rc = %d\n", rc
);
1276 cifsi
->cifsAttrs
|= FILE_ATTRIBUTE_SPARSE_FILE
;
1278 cifsi
->cifsAttrs
&= (~FILE_ATTRIBUTE_SPARSE_FILE
);
1284 smb2_set_file_size(const unsigned int xid
, struct cifs_tcon
*tcon
,
1285 struct cifsFileInfo
*cfile
, __u64 size
, bool set_alloc
)
1287 __le64 eof
= cpu_to_le64(size
);
1288 struct inode
*inode
;
1291 * If extending file more than one page make sparse. Many Linux fs
1292 * make files sparse by default when extending via ftruncate
1294 inode
= d_inode(cfile
->dentry
);
1296 if (!set_alloc
&& (size
> inode
->i_size
+ 8192)) {
1297 __u8 set_sparse
= 1;
1299 /* whether set sparse succeeds or not, extend the file */
1300 smb2_set_sparse(xid
, tcon
, cfile
, inode
, set_sparse
);
1303 return SMB2_set_eof(xid
, tcon
, cfile
->fid
.persistent_fid
,
1304 cfile
->fid
.volatile_fid
, cfile
->pid
, &eof
, false);
1308 smb2_duplicate_extents(const unsigned int xid
,
1309 struct cifsFileInfo
*srcfile
,
1310 struct cifsFileInfo
*trgtfile
, u64 src_off
,
1311 u64 len
, u64 dest_off
)
1314 unsigned int ret_data_len
;
1315 struct duplicate_extents_to_file dup_ext_buf
;
1316 struct cifs_tcon
*tcon
= tlink_tcon(trgtfile
->tlink
);
1318 /* server fileays advertise duplicate extent support with this flag */
1319 if ((le32_to_cpu(tcon
->fsAttrInfo
.Attributes
) &
1320 FILE_SUPPORTS_BLOCK_REFCOUNTING
) == 0)
1323 dup_ext_buf
.VolatileFileHandle
= srcfile
->fid
.volatile_fid
;
1324 dup_ext_buf
.PersistentFileHandle
= srcfile
->fid
.persistent_fid
;
1325 dup_ext_buf
.SourceFileOffset
= cpu_to_le64(src_off
);
1326 dup_ext_buf
.TargetFileOffset
= cpu_to_le64(dest_off
);
1327 dup_ext_buf
.ByteCount
= cpu_to_le64(len
);
1328 cifs_dbg(FYI
, "duplicate extents: src off %lld dst off %lld len %lld",
1329 src_off
, dest_off
, len
);
1331 rc
= smb2_set_file_size(xid
, tcon
, trgtfile
, dest_off
+ len
, false);
1333 goto duplicate_extents_out
;
1335 rc
= SMB2_ioctl(xid
, tcon
, trgtfile
->fid
.persistent_fid
,
1336 trgtfile
->fid
.volatile_fid
,
1337 FSCTL_DUPLICATE_EXTENTS_TO_FILE
,
1338 true /* is_fsctl */,
1339 (char *)&dup_ext_buf
,
1340 sizeof(struct duplicate_extents_to_file
),
1344 if (ret_data_len
> 0)
1345 cifs_dbg(FYI
, "non-zero response length in duplicate extents");
1347 duplicate_extents_out
:
1352 smb2_set_compression(const unsigned int xid
, struct cifs_tcon
*tcon
,
1353 struct cifsFileInfo
*cfile
)
1355 return SMB2_set_compression(xid
, tcon
, cfile
->fid
.persistent_fid
,
1356 cfile
->fid
.volatile_fid
);
1360 smb3_set_integrity(const unsigned int xid
, struct cifs_tcon
*tcon
,
1361 struct cifsFileInfo
*cfile
)
1363 struct fsctl_set_integrity_information_req integr_info
;
1364 unsigned int ret_data_len
;
1366 integr_info
.ChecksumAlgorithm
= cpu_to_le16(CHECKSUM_TYPE_UNCHANGED
);
1367 integr_info
.Flags
= 0;
1368 integr_info
.Reserved
= 0;
1370 return SMB2_ioctl(xid
, tcon
, cfile
->fid
.persistent_fid
,
1371 cfile
->fid
.volatile_fid
,
1372 FSCTL_SET_INTEGRITY_INFORMATION
,
1373 true /* is_fsctl */,
1374 (char *)&integr_info
,
1375 sizeof(struct fsctl_set_integrity_information_req
),
1381 /* GMT Token is @GMT-YYYY.MM.DD-HH.MM.SS Unicode which is 48 bytes + null */
1382 #define GMT_TOKEN_SIZE 50
1385 * Input buffer contains (empty) struct smb_snapshot array with size filled in
1386 * For output see struct SRV_SNAPSHOT_ARRAY in MS-SMB2 section 2.2.32.2
1389 smb3_enum_snapshots(const unsigned int xid
, struct cifs_tcon
*tcon
,
1390 struct cifsFileInfo
*cfile
, void __user
*ioc_buf
)
1392 char *retbuf
= NULL
;
1393 unsigned int ret_data_len
= 0;
1395 struct smb_snapshot_array snapshot_in
;
1397 rc
= SMB2_ioctl(xid
, tcon
, cfile
->fid
.persistent_fid
,
1398 cfile
->fid
.volatile_fid
,
1399 FSCTL_SRV_ENUMERATE_SNAPSHOTS
,
1400 true /* is_fsctl */,
1401 NULL
, 0 /* no input data */,
1404 cifs_dbg(FYI
, "enum snaphots ioctl returned %d and ret buflen is %d\n",
1409 if (ret_data_len
&& (ioc_buf
!= NULL
) && (retbuf
!= NULL
)) {
1411 if (copy_from_user(&snapshot_in
, ioc_buf
,
1412 sizeof(struct smb_snapshot_array
))) {
1419 * Check for min size, ie not large enough to fit even one GMT
1420 * token (snapshot). On the first ioctl some users may pass in
1421 * smaller size (or zero) to simply get the size of the array
1422 * so the user space caller can allocate sufficient memory
1423 * and retry the ioctl again with larger array size sufficient
1424 * to hold all of the snapshot GMT tokens on the second try.
1426 if (snapshot_in
.snapshot_array_size
< GMT_TOKEN_SIZE
)
1427 ret_data_len
= sizeof(struct smb_snapshot_array
);
1430 * We return struct SRV_SNAPSHOT_ARRAY, followed by
1431 * the snapshot array (of 50 byte GMT tokens) each
1432 * representing an available previous version of the data
1434 if (ret_data_len
> (snapshot_in
.snapshot_array_size
+
1435 sizeof(struct smb_snapshot_array
)))
1436 ret_data_len
= snapshot_in
.snapshot_array_size
+
1437 sizeof(struct smb_snapshot_array
);
1439 if (copy_to_user(ioc_buf
, retbuf
, ret_data_len
))
1448 smb2_query_dir_first(const unsigned int xid
, struct cifs_tcon
*tcon
,
1449 const char *path
, struct cifs_sb_info
*cifs_sb
,
1450 struct cifs_fid
*fid
, __u16 search_flags
,
1451 struct cifs_search_info
*srch_inf
)
1455 __u8 oplock
= SMB2_OPLOCK_LEVEL_NONE
;
1456 struct cifs_open_parms oparms
;
1458 utf16_path
= cifs_convert_path_to_utf16(path
, cifs_sb
);
1463 oparms
.desired_access
= FILE_READ_ATTRIBUTES
| FILE_READ_DATA
;
1464 oparms
.disposition
= FILE_OPEN
;
1465 if (backup_cred(cifs_sb
))
1466 oparms
.create_options
= CREATE_OPEN_BACKUP_INTENT
;
1468 oparms
.create_options
= 0;
1470 oparms
.reconnect
= false;
1472 rc
= SMB2_open(xid
, &oparms
, utf16_path
, &oplock
, NULL
, NULL
, NULL
);
1475 cifs_dbg(FYI
, "open dir failed rc=%d\n", rc
);
1479 srch_inf
->entries_in_buffer
= 0;
1480 srch_inf
->index_of_last_entry
= 2;
1482 rc
= SMB2_query_directory(xid
, tcon
, fid
->persistent_fid
,
1483 fid
->volatile_fid
, 0, srch_inf
);
1485 cifs_dbg(FYI
, "query directory failed rc=%d\n", rc
);
1486 SMB2_close(xid
, tcon
, fid
->persistent_fid
, fid
->volatile_fid
);
1492 smb2_query_dir_next(const unsigned int xid
, struct cifs_tcon
*tcon
,
1493 struct cifs_fid
*fid
, __u16 search_flags
,
1494 struct cifs_search_info
*srch_inf
)
1496 return SMB2_query_directory(xid
, tcon
, fid
->persistent_fid
,
1497 fid
->volatile_fid
, 0, srch_inf
);
1501 smb2_close_dir(const unsigned int xid
, struct cifs_tcon
*tcon
,
1502 struct cifs_fid
*fid
)
1504 return SMB2_close(xid
, tcon
, fid
->persistent_fid
, fid
->volatile_fid
);
1508 * If we negotiate SMB2 protocol and get STATUS_PENDING - update
1509 * the number of credits and return true. Otherwise - return false.
1512 smb2_is_status_pending(char *buf
, struct TCP_Server_Info
*server
, int length
)
1514 struct smb2_sync_hdr
*shdr
= (struct smb2_sync_hdr
*)buf
;
1516 if (shdr
->Status
!= STATUS_PENDING
)
1520 spin_lock(&server
->req_lock
);
1521 server
->credits
+= le16_to_cpu(shdr
->CreditRequest
);
1522 spin_unlock(&server
->req_lock
);
1523 wake_up(&server
->request_q
);
1530 smb2_is_session_expired(char *buf
)
1532 struct smb2_sync_hdr
*shdr
= (struct smb2_sync_hdr
*)buf
;
1534 if (shdr
->Status
!= STATUS_NETWORK_SESSION_EXPIRED
&&
1535 shdr
->Status
!= STATUS_USER_SESSION_DELETED
)
1538 trace_smb3_ses_expired(shdr
->TreeId
, shdr
->SessionId
,
1539 le16_to_cpu(shdr
->Command
),
1540 le64_to_cpu(shdr
->MessageId
));
1541 cifs_dbg(FYI
, "Session expired or deleted\n");
1547 smb2_oplock_response(struct cifs_tcon
*tcon
, struct cifs_fid
*fid
,
1548 struct cifsInodeInfo
*cinode
)
1550 if (tcon
->ses
->server
->capabilities
& SMB2_GLOBAL_CAP_LEASING
)
1551 return SMB2_lease_break(0, tcon
, cinode
->lease_key
,
1552 smb2_get_lease_state(cinode
));
1554 return SMB2_oplock_break(0, tcon
, fid
->persistent_fid
,
1556 CIFS_CACHE_READ(cinode
) ? 1 : 0);
1560 smb2_set_related(struct smb_rqst
*rqst
)
1562 struct smb2_sync_hdr
*shdr
;
1564 shdr
= (struct smb2_sync_hdr
*)(rqst
->rq_iov
[0].iov_base
);
1565 shdr
->Flags
|= SMB2_FLAGS_RELATED_OPERATIONS
;
1568 char smb2_padding
[7] = {0, 0, 0, 0, 0, 0, 0};
1571 smb2_set_next_command(struct TCP_Server_Info
*server
, struct smb_rqst
*rqst
)
1573 struct smb2_sync_hdr
*shdr
;
1574 unsigned long len
= smb_rqst_len(server
, rqst
);
1576 /* SMB headers in a compound are 8 byte aligned. */
1578 rqst
->rq_iov
[rqst
->rq_nvec
].iov_base
= smb2_padding
;
1579 rqst
->rq_iov
[rqst
->rq_nvec
].iov_len
= 8 - (len
& 7);
1581 len
= smb_rqst_len(server
, rqst
);
1584 shdr
= (struct smb2_sync_hdr
*)(rqst
->rq_iov
[0].iov_base
);
1585 shdr
->NextCommand
= cpu_to_le32(len
);
1589 smb2_queryfs(const unsigned int xid
, struct cifs_tcon
*tcon
,
1590 struct kstatfs
*buf
)
1592 struct smb2_query_info_rsp
*rsp
;
1593 struct smb2_fs_full_size_info
*info
= NULL
;
1594 struct smb_rqst rqst
[3];
1595 int resp_buftype
[3];
1596 struct kvec rsp_iov
[3];
1597 struct kvec open_iov
[SMB2_CREATE_IOV_SIZE
];
1598 struct kvec qi_iov
[1];
1599 struct kvec close_iov
[1];
1600 struct cifs_ses
*ses
= tcon
->ses
;
1601 struct TCP_Server_Info
*server
= ses
->server
;
1602 __le16 srch_path
= 0; /* Null - open root of share */
1603 u8 oplock
= SMB2_OPLOCK_LEVEL_NONE
;
1604 struct cifs_open_parms oparms
;
1605 struct cifs_fid fid
;
1609 if (smb3_encryption_required(tcon
))
1610 flags
|= CIFS_TRANSFORM_REQ
;
1612 memset(rqst
, 0, sizeof(rqst
));
1613 memset(resp_buftype
, 0, sizeof(resp_buftype
));
1614 memset(rsp_iov
, 0, sizeof(rsp_iov
));
1616 memset(&open_iov
, 0, sizeof(open_iov
));
1617 rqst
[0].rq_iov
= open_iov
;
1618 rqst
[0].rq_nvec
= SMB2_CREATE_IOV_SIZE
;
1621 oparms
.desired_access
= FILE_READ_ATTRIBUTES
;
1622 oparms
.disposition
= FILE_OPEN
;
1623 oparms
.create_options
= 0;
1625 oparms
.reconnect
= false;
1627 rc
= SMB2_open_init(tcon
, &rqst
[0], &oplock
, &oparms
, &srch_path
);
1630 smb2_set_next_command(server
, &rqst
[0]);
1632 memset(&qi_iov
, 0, sizeof(qi_iov
));
1633 rqst
[1].rq_iov
= qi_iov
;
1634 rqst
[1].rq_nvec
= 1;
1636 rc
= SMB2_query_info_init(tcon
, &rqst
[1], COMPOUND_FID
, COMPOUND_FID
,
1637 FS_FULL_SIZE_INFORMATION
,
1638 SMB2_O_INFO_FILESYSTEM
, 0,
1639 sizeof(struct smb2_fs_full_size_info
));
1642 smb2_set_next_command(server
, &rqst
[1]);
1643 smb2_set_related(&rqst
[1]);
1645 memset(&close_iov
, 0, sizeof(close_iov
));
1646 rqst
[2].rq_iov
= close_iov
;
1647 rqst
[2].rq_nvec
= 1;
1649 rc
= SMB2_close_init(tcon
, &rqst
[2], COMPOUND_FID
, COMPOUND_FID
);
1652 smb2_set_related(&rqst
[2]);
1654 rc
= compound_send_recv(xid
, ses
, flags
, 3, rqst
,
1655 resp_buftype
, rsp_iov
);
1659 rsp
= (struct smb2_query_info_rsp
*)rsp_iov
[1].iov_base
;
1660 buf
->f_type
= SMB2_MAGIC_NUMBER
;
1661 info
= (struct smb2_fs_full_size_info
*)(
1662 le16_to_cpu(rsp
->OutputBufferOffset
) + (char *)rsp
);
1663 rc
= smb2_validate_iov(le16_to_cpu(rsp
->OutputBufferOffset
),
1664 le32_to_cpu(rsp
->OutputBufferLength
),
1666 sizeof(struct smb2_fs_full_size_info
));
1668 smb2_copy_fs_info_to_kstatfs(info
, buf
);
1671 SMB2_open_free(&rqst
[0]);
1672 SMB2_query_info_free(&rqst
[1]);
1673 SMB2_close_free(&rqst
[2]);
1674 free_rsp_buf(resp_buftype
[0], rsp_iov
[0].iov_base
);
1675 free_rsp_buf(resp_buftype
[1], rsp_iov
[1].iov_base
);
1676 free_rsp_buf(resp_buftype
[2], rsp_iov
[2].iov_base
);
1681 smb311_queryfs(const unsigned int xid
, struct cifs_tcon
*tcon
,
1682 struct kstatfs
*buf
)
1685 __le16 srch_path
= 0; /* Null - open root of share */
1686 u8 oplock
= SMB2_OPLOCK_LEVEL_NONE
;
1687 struct cifs_open_parms oparms
;
1688 struct cifs_fid fid
;
1690 if (!tcon
->posix_extensions
)
1691 return smb2_queryfs(xid
, tcon
, buf
);
1694 oparms
.desired_access
= FILE_READ_ATTRIBUTES
;
1695 oparms
.disposition
= FILE_OPEN
;
1696 oparms
.create_options
= 0;
1698 oparms
.reconnect
= false;
1700 rc
= SMB2_open(xid
, &oparms
, &srch_path
, &oplock
, NULL
, NULL
, NULL
);
1704 rc
= SMB311_posix_qfs_info(xid
, tcon
, fid
.persistent_fid
,
1705 fid
.volatile_fid
, buf
);
1706 buf
->f_type
= SMB2_MAGIC_NUMBER
;
1707 SMB2_close(xid
, tcon
, fid
.persistent_fid
, fid
.volatile_fid
);
1712 smb2_compare_fids(struct cifsFileInfo
*ob1
, struct cifsFileInfo
*ob2
)
1714 return ob1
->fid
.persistent_fid
== ob2
->fid
.persistent_fid
&&
1715 ob1
->fid
.volatile_fid
== ob2
->fid
.volatile_fid
;
1719 smb2_mand_lock(const unsigned int xid
, struct cifsFileInfo
*cfile
, __u64 offset
,
1720 __u64 length
, __u32 type
, int lock
, int unlock
, bool wait
)
1722 if (unlock
&& !lock
)
1723 type
= SMB2_LOCKFLAG_UNLOCK
;
1724 return SMB2_lock(xid
, tlink_tcon(cfile
->tlink
),
1725 cfile
->fid
.persistent_fid
, cfile
->fid
.volatile_fid
,
1726 current
->tgid
, length
, offset
, type
, wait
);
1730 smb2_get_lease_key(struct inode
*inode
, struct cifs_fid
*fid
)
1732 memcpy(fid
->lease_key
, CIFS_I(inode
)->lease_key
, SMB2_LEASE_KEY_SIZE
);
1736 smb2_set_lease_key(struct inode
*inode
, struct cifs_fid
*fid
)
1738 memcpy(CIFS_I(inode
)->lease_key
, fid
->lease_key
, SMB2_LEASE_KEY_SIZE
);
1742 smb2_new_lease_key(struct cifs_fid
*fid
)
1744 generate_random_uuid(fid
->lease_key
);
1748 smb2_get_dfs_refer(const unsigned int xid
, struct cifs_ses
*ses
,
1749 const char *search_name
,
1750 struct dfs_info3_param
**target_nodes
,
1751 unsigned int *num_of_nodes
,
1752 const struct nls_table
*nls_codepage
, int remap
)
1755 __le16
*utf16_path
= NULL
;
1756 int utf16_path_len
= 0;
1757 struct cifs_tcon
*tcon
;
1758 struct fsctl_get_dfs_referral_req
*dfs_req
= NULL
;
1759 struct get_dfs_referral_rsp
*dfs_rsp
= NULL
;
1760 u32 dfs_req_size
= 0, dfs_rsp_size
= 0;
1762 cifs_dbg(FYI
, "smb2_get_dfs_refer path <%s>\n", search_name
);
1765 * Try to use the IPC tcon, otherwise just use any
1767 tcon
= ses
->tcon_ipc
;
1769 spin_lock(&cifs_tcp_ses_lock
);
1770 tcon
= list_first_entry_or_null(&ses
->tcon_list
,
1775 spin_unlock(&cifs_tcp_ses_lock
);
1779 cifs_dbg(VFS
, "session %p has no tcon available for a dfs referral request\n",
1785 utf16_path
= cifs_strndup_to_utf16(search_name
, PATH_MAX
,
1787 nls_codepage
, remap
);
1793 dfs_req_size
= sizeof(*dfs_req
) + utf16_path_len
;
1794 dfs_req
= kzalloc(dfs_req_size
, GFP_KERNEL
);
1800 /* Highest DFS referral version understood */
1801 dfs_req
->MaxReferralLevel
= DFS_VERSION
;
1803 /* Path to resolve in an UTF-16 null-terminated string */
1804 memcpy(dfs_req
->RequestFileName
, utf16_path
, utf16_path_len
);
1807 rc
= SMB2_ioctl(xid
, tcon
, NO_FILE_ID
, NO_FILE_ID
,
1808 FSCTL_DFS_GET_REFERRALS
,
1809 true /* is_fsctl */,
1810 (char *)dfs_req
, dfs_req_size
,
1811 (char **)&dfs_rsp
, &dfs_rsp_size
);
1812 } while (rc
== -EAGAIN
);
1815 if ((rc
!= -ENOENT
) && (rc
!= -EOPNOTSUPP
))
1816 cifs_dbg(VFS
, "ioctl error in smb2_get_dfs_refer rc=%d\n", rc
);
1820 rc
= parse_dfs_referrals(dfs_rsp
, dfs_rsp_size
,
1821 num_of_nodes
, target_nodes
,
1822 nls_codepage
, remap
, search_name
,
1823 true /* is_unicode */);
1825 cifs_dbg(VFS
, "parse error in smb2_get_dfs_refer rc=%d\n", rc
);
1830 if (tcon
&& !tcon
->ipc
) {
1831 /* ipc tcons are not refcounted */
1832 spin_lock(&cifs_tcp_ses_lock
);
1834 spin_unlock(&cifs_tcp_ses_lock
);
1841 #define SMB2_SYMLINK_STRUCT_SIZE \
1842 (sizeof(struct smb2_err_rsp) - 1 + sizeof(struct smb2_symlink_err_rsp))
1845 smb2_query_symlink(const unsigned int xid
, struct cifs_tcon
*tcon
,
1846 const char *full_path
, char **target_path
,
1847 struct cifs_sb_info
*cifs_sb
)
1851 __u8 oplock
= SMB2_OPLOCK_LEVEL_NONE
;
1852 struct cifs_open_parms oparms
;
1853 struct cifs_fid fid
;
1854 struct kvec err_iov
= {NULL
, 0};
1855 struct smb2_err_rsp
*err_buf
= NULL
;
1857 struct smb2_symlink_err_rsp
*symlink
;
1858 unsigned int sub_len
;
1859 unsigned int sub_offset
;
1860 unsigned int print_len
;
1861 unsigned int print_offset
;
1863 cifs_dbg(FYI
, "%s: path: %s\n", __func__
, full_path
);
1865 utf16_path
= cifs_convert_path_to_utf16(full_path
, cifs_sb
);
1870 oparms
.desired_access
= FILE_READ_ATTRIBUTES
;
1871 oparms
.disposition
= FILE_OPEN
;
1872 if (backup_cred(cifs_sb
))
1873 oparms
.create_options
= CREATE_OPEN_BACKUP_INTENT
;
1875 oparms
.create_options
= 0;
1877 oparms
.reconnect
= false;
1879 rc
= SMB2_open(xid
, &oparms
, utf16_path
, &oplock
, NULL
, &err_iov
,
1881 if (!rc
|| !err_iov
.iov_base
) {
1886 err_buf
= err_iov
.iov_base
;
1887 if (le32_to_cpu(err_buf
->ByteCount
) < sizeof(struct smb2_symlink_err_rsp
) ||
1888 err_iov
.iov_len
< SMB2_SYMLINK_STRUCT_SIZE
) {
1893 /* open must fail on symlink - reset rc */
1895 symlink
= (struct smb2_symlink_err_rsp
*)err_buf
->ErrorData
;
1896 sub_len
= le16_to_cpu(symlink
->SubstituteNameLength
);
1897 sub_offset
= le16_to_cpu(symlink
->SubstituteNameOffset
);
1898 print_len
= le16_to_cpu(symlink
->PrintNameLength
);
1899 print_offset
= le16_to_cpu(symlink
->PrintNameOffset
);
1901 if (err_iov
.iov_len
< SMB2_SYMLINK_STRUCT_SIZE
+ sub_offset
+ sub_len
) {
1906 if (err_iov
.iov_len
<
1907 SMB2_SYMLINK_STRUCT_SIZE
+ print_offset
+ print_len
) {
1912 *target_path
= cifs_strndup_from_utf16(
1913 (char *)symlink
->PathBuffer
+ sub_offset
,
1914 sub_len
, true, cifs_sb
->local_nls
);
1915 if (!(*target_path
)) {
1919 convert_delimiter(*target_path
, '/');
1920 cifs_dbg(FYI
, "%s: target path: %s\n", __func__
, *target_path
);
1923 free_rsp_buf(resp_buftype
, err_buf
);
1929 #ifdef CONFIG_CIFS_ACL
1930 static struct cifs_ntsd
*
1931 get_smb2_acl_by_fid(struct cifs_sb_info
*cifs_sb
,
1932 const struct cifs_fid
*cifsfid
, u32
*pacllen
)
1934 struct cifs_ntsd
*pntsd
= NULL
;
1936 int rc
= -EOPNOTSUPP
;
1937 struct tcon_link
*tlink
= cifs_sb_tlink(cifs_sb
);
1940 return ERR_CAST(tlink
);
1943 cifs_dbg(FYI
, "trying to get acl\n");
1945 rc
= SMB2_query_acl(xid
, tlink_tcon(tlink
), cifsfid
->persistent_fid
,
1946 cifsfid
->volatile_fid
, (void **)&pntsd
, pacllen
);
1949 cifs_put_tlink(tlink
);
1951 cifs_dbg(FYI
, "%s: rc = %d ACL len %d\n", __func__
, rc
, *pacllen
);
1958 static struct cifs_ntsd
*
1959 get_smb2_acl_by_path(struct cifs_sb_info
*cifs_sb
,
1960 const char *path
, u32
*pacllen
)
1962 struct cifs_ntsd
*pntsd
= NULL
;
1963 u8 oplock
= SMB2_OPLOCK_LEVEL_NONE
;
1966 struct cifs_tcon
*tcon
;
1967 struct tcon_link
*tlink
= cifs_sb_tlink(cifs_sb
);
1968 struct cifs_fid fid
;
1969 struct cifs_open_parms oparms
;
1972 cifs_dbg(FYI
, "get smb3 acl for path %s\n", path
);
1974 return ERR_CAST(tlink
);
1976 tcon
= tlink_tcon(tlink
);
1979 if (backup_cred(cifs_sb
))
1980 oparms
.create_options
= CREATE_OPEN_BACKUP_INTENT
;
1982 oparms
.create_options
= 0;
1984 utf16_path
= cifs_convert_path_to_utf16(path
, cifs_sb
);
1992 oparms
.desired_access
= READ_CONTROL
;
1993 oparms
.disposition
= FILE_OPEN
;
1995 oparms
.reconnect
= false;
1997 rc
= SMB2_open(xid
, &oparms
, utf16_path
, &oplock
, NULL
, NULL
, NULL
);
2000 rc
= SMB2_query_acl(xid
, tlink_tcon(tlink
), fid
.persistent_fid
,
2001 fid
.volatile_fid
, (void **)&pntsd
, pacllen
);
2002 SMB2_close(xid
, tcon
, fid
.persistent_fid
, fid
.volatile_fid
);
2005 cifs_put_tlink(tlink
);
2008 cifs_dbg(FYI
, "%s: rc = %d ACL len %d\n", __func__
, rc
, *pacllen
);
2014 #ifdef CONFIG_CIFS_ACL
2016 set_smb2_acl(struct cifs_ntsd
*pnntsd
, __u32 acllen
,
2017 struct inode
*inode
, const char *path
, int aclflag
)
2019 u8 oplock
= SMB2_OPLOCK_LEVEL_NONE
;
2021 int rc
, access_flags
= 0;
2022 struct cifs_tcon
*tcon
;
2023 struct cifs_sb_info
*cifs_sb
= CIFS_SB(inode
->i_sb
);
2024 struct tcon_link
*tlink
= cifs_sb_tlink(cifs_sb
);
2025 struct cifs_fid fid
;
2026 struct cifs_open_parms oparms
;
2029 cifs_dbg(FYI
, "set smb3 acl for path %s\n", path
);
2031 return PTR_ERR(tlink
);
2033 tcon
= tlink_tcon(tlink
);
2036 if (backup_cred(cifs_sb
))
2037 oparms
.create_options
= CREATE_OPEN_BACKUP_INTENT
;
2039 oparms
.create_options
= 0;
2041 if (aclflag
== CIFS_ACL_OWNER
|| aclflag
== CIFS_ACL_GROUP
)
2042 access_flags
= WRITE_OWNER
;
2044 access_flags
= WRITE_DAC
;
2046 utf16_path
= cifs_convert_path_to_utf16(path
, cifs_sb
);
2054 oparms
.desired_access
= access_flags
;
2055 oparms
.disposition
= FILE_OPEN
;
2058 oparms
.reconnect
= false;
2060 rc
= SMB2_open(xid
, &oparms
, utf16_path
, &oplock
, NULL
, NULL
, NULL
);
2063 rc
= SMB2_set_acl(xid
, tlink_tcon(tlink
), fid
.persistent_fid
,
2064 fid
.volatile_fid
, pnntsd
, acllen
, aclflag
);
2065 SMB2_close(xid
, tcon
, fid
.persistent_fid
, fid
.volatile_fid
);
2068 cifs_put_tlink(tlink
);
2072 #endif /* CIFS_ACL */
2074 /* Retrieve an ACL from the server */
2075 static struct cifs_ntsd
*
2076 get_smb2_acl(struct cifs_sb_info
*cifs_sb
,
2077 struct inode
*inode
, const char *path
,
2080 struct cifs_ntsd
*pntsd
= NULL
;
2081 struct cifsFileInfo
*open_file
= NULL
;
2084 open_file
= find_readable_file(CIFS_I(inode
), true);
2086 return get_smb2_acl_by_path(cifs_sb
, path
, pacllen
);
2088 pntsd
= get_smb2_acl_by_fid(cifs_sb
, &open_file
->fid
, pacllen
);
2089 cifsFileInfo_put(open_file
);
2094 static long smb3_zero_range(struct file
*file
, struct cifs_tcon
*tcon
,
2095 loff_t offset
, loff_t len
, bool keep_size
)
2097 struct inode
*inode
;
2098 struct cifsInodeInfo
*cifsi
;
2099 struct cifsFileInfo
*cfile
= file
->private_data
;
2100 struct file_zero_data_information fsctl_buf
;
2106 inode
= d_inode(cfile
->dentry
);
2107 cifsi
= CIFS_I(inode
);
2109 /* if file not oplocked can't be sure whether asking to extend size */
2110 if (!CIFS_CACHE_READ(cifsi
))
2111 if (keep_size
== false) {
2118 * Must check if file sparse since fallocate -z (zero range) assumes
2119 * non-sparse allocation
2121 if (!(cifsi
->cifsAttrs
& FILE_ATTRIBUTE_SPARSE_FILE
)) {
2128 * need to make sure we are not asked to extend the file since the SMB3
2129 * fsctl does not change the file size. In the future we could change
2130 * this to zero the first part of the range then set the file size
2131 * which for a non sparse file would zero the newly extended range
2133 if (keep_size
== false)
2134 if (i_size_read(inode
) < offset
+ len
) {
2140 cifs_dbg(FYI
, "offset %lld len %lld", offset
, len
);
2142 fsctl_buf
.FileOffset
= cpu_to_le64(offset
);
2143 fsctl_buf
.BeyondFinalZero
= cpu_to_le64(offset
+ len
);
2145 rc
= SMB2_ioctl(xid
, tcon
, cfile
->fid
.persistent_fid
,
2146 cfile
->fid
.volatile_fid
, FSCTL_SET_ZERO_DATA
,
2147 true /* is_fctl */, (char *)&fsctl_buf
,
2148 sizeof(struct file_zero_data_information
), NULL
, NULL
);
2153 static long smb3_punch_hole(struct file
*file
, struct cifs_tcon
*tcon
,
2154 loff_t offset
, loff_t len
)
2156 struct inode
*inode
;
2157 struct cifsInodeInfo
*cifsi
;
2158 struct cifsFileInfo
*cfile
= file
->private_data
;
2159 struct file_zero_data_information fsctl_buf
;
2162 __u8 set_sparse
= 1;
2166 inode
= d_inode(cfile
->dentry
);
2167 cifsi
= CIFS_I(inode
);
2169 /* Need to make file sparse, if not already, before freeing range. */
2170 /* Consider adding equivalent for compressed since it could also work */
2171 if (!smb2_set_sparse(xid
, tcon
, cfile
, inode
, set_sparse
)) {
2177 cifs_dbg(FYI
, "offset %lld len %lld", offset
, len
);
2179 fsctl_buf
.FileOffset
= cpu_to_le64(offset
);
2180 fsctl_buf
.BeyondFinalZero
= cpu_to_le64(offset
+ len
);
2182 rc
= SMB2_ioctl(xid
, tcon
, cfile
->fid
.persistent_fid
,
2183 cfile
->fid
.volatile_fid
, FSCTL_SET_ZERO_DATA
,
2184 true /* is_fctl */, (char *)&fsctl_buf
,
2185 sizeof(struct file_zero_data_information
), NULL
, NULL
);
2190 static long smb3_simple_falloc(struct file
*file
, struct cifs_tcon
*tcon
,
2191 loff_t off
, loff_t len
, bool keep_size
)
2193 struct inode
*inode
;
2194 struct cifsInodeInfo
*cifsi
;
2195 struct cifsFileInfo
*cfile
= file
->private_data
;
2196 long rc
= -EOPNOTSUPP
;
2201 inode
= d_inode(cfile
->dentry
);
2202 cifsi
= CIFS_I(inode
);
2204 /* if file not oplocked can't be sure whether asking to extend size */
2205 if (!CIFS_CACHE_READ(cifsi
))
2206 if (keep_size
== false) {
2212 * Files are non-sparse by default so falloc may be a no-op
2213 * Must check if file sparse. If not sparse, and not extending
2214 * then no need to do anything since file already allocated
2216 if ((cifsi
->cifsAttrs
& FILE_ATTRIBUTE_SPARSE_FILE
) == 0) {
2217 if (keep_size
== true)
2219 /* check if extending file */
2220 else if (i_size_read(inode
) >= off
+ len
)
2221 /* not extending file and already not sparse */
2223 /* BB: in future add else clause to extend file */
2230 if ((keep_size
== true) || (i_size_read(inode
) >= off
+ len
)) {
2232 * Check if falloc starts within first few pages of file
2233 * and ends within a few pages of the end of file to
2234 * ensure that most of file is being forced to be
2235 * fallocated now. If so then setting whole file sparse
2236 * ie potentially making a few extra pages at the beginning
2237 * or end of the file non-sparse via set_sparse is harmless.
2239 if ((off
> 8192) || (off
+ len
+ 8192 < i_size_read(inode
))) {
2245 rc
= smb2_set_sparse(xid
, tcon
, cfile
, inode
, false);
2247 /* BB: else ... in future add code to extend file and set sparse */
2255 static long smb3_fallocate(struct file
*file
, struct cifs_tcon
*tcon
, int mode
,
2256 loff_t off
, loff_t len
)
2258 /* KEEP_SIZE already checked for by do_fallocate */
2259 if (mode
& FALLOC_FL_PUNCH_HOLE
)
2260 return smb3_punch_hole(file
, tcon
, off
, len
);
2261 else if (mode
& FALLOC_FL_ZERO_RANGE
) {
2262 if (mode
& FALLOC_FL_KEEP_SIZE
)
2263 return smb3_zero_range(file
, tcon
, off
, len
, true);
2264 return smb3_zero_range(file
, tcon
, off
, len
, false);
2265 } else if (mode
== FALLOC_FL_KEEP_SIZE
)
2266 return smb3_simple_falloc(file
, tcon
, off
, len
, true);
2268 return smb3_simple_falloc(file
, tcon
, off
, len
, false);
2274 smb2_downgrade_oplock(struct TCP_Server_Info
*server
,
2275 struct cifsInodeInfo
*cinode
, bool set_level2
)
2278 server
->ops
->set_oplock_level(cinode
, SMB2_OPLOCK_LEVEL_II
,
2281 server
->ops
->set_oplock_level(cinode
, 0, 0, NULL
);
2285 smb2_set_oplock_level(struct cifsInodeInfo
*cinode
, __u32 oplock
,
2286 unsigned int epoch
, bool *purge_cache
)
2289 if (oplock
== SMB2_OPLOCK_LEVEL_NOCHANGE
)
2291 if (oplock
== SMB2_OPLOCK_LEVEL_BATCH
) {
2292 cinode
->oplock
= CIFS_CACHE_RHW_FLG
;
2293 cifs_dbg(FYI
, "Batch Oplock granted on inode %p\n",
2294 &cinode
->vfs_inode
);
2295 } else if (oplock
== SMB2_OPLOCK_LEVEL_EXCLUSIVE
) {
2296 cinode
->oplock
= CIFS_CACHE_RW_FLG
;
2297 cifs_dbg(FYI
, "Exclusive Oplock granted on inode %p\n",
2298 &cinode
->vfs_inode
);
2299 } else if (oplock
== SMB2_OPLOCK_LEVEL_II
) {
2300 cinode
->oplock
= CIFS_CACHE_READ_FLG
;
2301 cifs_dbg(FYI
, "Level II Oplock granted on inode %p\n",
2302 &cinode
->vfs_inode
);
2308 smb21_set_oplock_level(struct cifsInodeInfo
*cinode
, __u32 oplock
,
2309 unsigned int epoch
, bool *purge_cache
)
2311 char message
[5] = {0};
2314 if (oplock
== SMB2_OPLOCK_LEVEL_NOCHANGE
)
2318 if (oplock
& SMB2_LEASE_READ_CACHING_HE
) {
2319 cinode
->oplock
|= CIFS_CACHE_READ_FLG
;
2320 strcat(message
, "R");
2322 if (oplock
& SMB2_LEASE_HANDLE_CACHING_HE
) {
2323 cinode
->oplock
|= CIFS_CACHE_HANDLE_FLG
;
2324 strcat(message
, "H");
2326 if (oplock
& SMB2_LEASE_WRITE_CACHING_HE
) {
2327 cinode
->oplock
|= CIFS_CACHE_WRITE_FLG
;
2328 strcat(message
, "W");
2330 if (!cinode
->oplock
)
2331 strcat(message
, "None");
2332 cifs_dbg(FYI
, "%s Lease granted on inode %p\n", message
,
2333 &cinode
->vfs_inode
);
2337 smb3_set_oplock_level(struct cifsInodeInfo
*cinode
, __u32 oplock
,
2338 unsigned int epoch
, bool *purge_cache
)
2340 unsigned int old_oplock
= cinode
->oplock
;
2342 smb21_set_oplock_level(cinode
, oplock
, epoch
, purge_cache
);
2345 *purge_cache
= false;
2346 if (old_oplock
== CIFS_CACHE_READ_FLG
) {
2347 if (cinode
->oplock
== CIFS_CACHE_READ_FLG
&&
2348 (epoch
- cinode
->epoch
> 0))
2349 *purge_cache
= true;
2350 else if (cinode
->oplock
== CIFS_CACHE_RH_FLG
&&
2351 (epoch
- cinode
->epoch
> 1))
2352 *purge_cache
= true;
2353 else if (cinode
->oplock
== CIFS_CACHE_RHW_FLG
&&
2354 (epoch
- cinode
->epoch
> 1))
2355 *purge_cache
= true;
2356 else if (cinode
->oplock
== 0 &&
2357 (epoch
- cinode
->epoch
> 0))
2358 *purge_cache
= true;
2359 } else if (old_oplock
== CIFS_CACHE_RH_FLG
) {
2360 if (cinode
->oplock
== CIFS_CACHE_RH_FLG
&&
2361 (epoch
- cinode
->epoch
> 0))
2362 *purge_cache
= true;
2363 else if (cinode
->oplock
== CIFS_CACHE_RHW_FLG
&&
2364 (epoch
- cinode
->epoch
> 1))
2365 *purge_cache
= true;
2367 cinode
->epoch
= epoch
;
2372 smb2_is_read_op(__u32 oplock
)
2374 return oplock
== SMB2_OPLOCK_LEVEL_II
;
2378 smb21_is_read_op(__u32 oplock
)
2380 return (oplock
& SMB2_LEASE_READ_CACHING_HE
) &&
2381 !(oplock
& SMB2_LEASE_WRITE_CACHING_HE
);
2385 map_oplock_to_lease(u8 oplock
)
2387 if (oplock
== SMB2_OPLOCK_LEVEL_EXCLUSIVE
)
2388 return SMB2_LEASE_WRITE_CACHING
| SMB2_LEASE_READ_CACHING
;
2389 else if (oplock
== SMB2_OPLOCK_LEVEL_II
)
2390 return SMB2_LEASE_READ_CACHING
;
2391 else if (oplock
== SMB2_OPLOCK_LEVEL_BATCH
)
2392 return SMB2_LEASE_HANDLE_CACHING
| SMB2_LEASE_READ_CACHING
|
2393 SMB2_LEASE_WRITE_CACHING
;
2398 smb2_create_lease_buf(u8
*lease_key
, u8 oplock
)
2400 struct create_lease
*buf
;
2402 buf
= kzalloc(sizeof(struct create_lease
), GFP_KERNEL
);
2406 memcpy(&buf
->lcontext
.LeaseKey
, lease_key
, SMB2_LEASE_KEY_SIZE
);
2407 buf
->lcontext
.LeaseState
= map_oplock_to_lease(oplock
);
2409 buf
->ccontext
.DataOffset
= cpu_to_le16(offsetof
2410 (struct create_lease
, lcontext
));
2411 buf
->ccontext
.DataLength
= cpu_to_le32(sizeof(struct lease_context
));
2412 buf
->ccontext
.NameOffset
= cpu_to_le16(offsetof
2413 (struct create_lease
, Name
));
2414 buf
->ccontext
.NameLength
= cpu_to_le16(4);
2415 /* SMB2_CREATE_REQUEST_LEASE is "RqLs" */
2424 smb3_create_lease_buf(u8
*lease_key
, u8 oplock
)
2426 struct create_lease_v2
*buf
;
2428 buf
= kzalloc(sizeof(struct create_lease_v2
), GFP_KERNEL
);
2432 memcpy(&buf
->lcontext
.LeaseKey
, lease_key
, SMB2_LEASE_KEY_SIZE
);
2433 buf
->lcontext
.LeaseState
= map_oplock_to_lease(oplock
);
2435 buf
->ccontext
.DataOffset
= cpu_to_le16(offsetof
2436 (struct create_lease_v2
, lcontext
));
2437 buf
->ccontext
.DataLength
= cpu_to_le32(sizeof(struct lease_context_v2
));
2438 buf
->ccontext
.NameOffset
= cpu_to_le16(offsetof
2439 (struct create_lease_v2
, Name
));
2440 buf
->ccontext
.NameLength
= cpu_to_le16(4);
2441 /* SMB2_CREATE_REQUEST_LEASE is "RqLs" */
2450 smb2_parse_lease_buf(void *buf
, unsigned int *epoch
, char *lease_key
)
2452 struct create_lease
*lc
= (struct create_lease
*)buf
;
2454 *epoch
= 0; /* not used */
2455 if (lc
->lcontext
.LeaseFlags
& SMB2_LEASE_FLAG_BREAK_IN_PROGRESS
)
2456 return SMB2_OPLOCK_LEVEL_NOCHANGE
;
2457 return le32_to_cpu(lc
->lcontext
.LeaseState
);
2461 smb3_parse_lease_buf(void *buf
, unsigned int *epoch
, char *lease_key
)
2463 struct create_lease_v2
*lc
= (struct create_lease_v2
*)buf
;
2465 *epoch
= le16_to_cpu(lc
->lcontext
.Epoch
);
2466 if (lc
->lcontext
.LeaseFlags
& SMB2_LEASE_FLAG_BREAK_IN_PROGRESS
)
2467 return SMB2_OPLOCK_LEVEL_NOCHANGE
;
2469 memcpy(lease_key
, &lc
->lcontext
.LeaseKey
, SMB2_LEASE_KEY_SIZE
);
2470 return le32_to_cpu(lc
->lcontext
.LeaseState
);
2474 smb2_wp_retry_size(struct inode
*inode
)
2476 return min_t(unsigned int, CIFS_SB(inode
->i_sb
)->wsize
,
2477 SMB2_MAX_BUFFER_SIZE
);
2481 smb2_dir_needs_close(struct cifsFileInfo
*cfile
)
2483 return !cfile
->invalidHandle
;
2487 fill_transform_hdr(struct smb2_transform_hdr
*tr_hdr
, unsigned int orig_len
,
2488 struct smb_rqst
*old_rq
)
2490 struct smb2_sync_hdr
*shdr
=
2491 (struct smb2_sync_hdr
*)old_rq
->rq_iov
[0].iov_base
;
2493 memset(tr_hdr
, 0, sizeof(struct smb2_transform_hdr
));
2494 tr_hdr
->ProtocolId
= SMB2_TRANSFORM_PROTO_NUM
;
2495 tr_hdr
->OriginalMessageSize
= cpu_to_le32(orig_len
);
2496 tr_hdr
->Flags
= cpu_to_le16(0x01);
2497 get_random_bytes(&tr_hdr
->Nonce
, SMB3_AES128CMM_NONCE
);
2498 memcpy(&tr_hdr
->SessionId
, &shdr
->SessionId
, 8);
2501 /* We can not use the normal sg_set_buf() as we will sometimes pass a
2502 * stack object as buf.
2504 static inline void smb2_sg_set_buf(struct scatterlist
*sg
, const void *buf
,
2505 unsigned int buflen
)
2507 sg_set_page(sg
, virt_to_page(buf
), buflen
, offset_in_page(buf
));
2510 /* Assumes the first rqst has a transform header as the first iov.
2512 * rqst[0].rq_iov[0] is transform header
2513 * rqst[0].rq_iov[1+] data to be encrypted/decrypted
2514 * rqst[1+].rq_iov[0+] data to be encrypted/decrypted
2516 static struct scatterlist
*
2517 init_sg(int num_rqst
, struct smb_rqst
*rqst
, u8
*sign
)
2519 unsigned int sg_len
;
2520 struct scatterlist
*sg
;
2523 unsigned int idx
= 0;
2527 for (i
= 0; i
< num_rqst
; i
++)
2528 sg_len
+= rqst
[i
].rq_nvec
+ rqst
[i
].rq_npages
;
2530 sg
= kmalloc_array(sg_len
, sizeof(struct scatterlist
), GFP_KERNEL
);
2534 sg_init_table(sg
, sg_len
);
2535 for (i
= 0; i
< num_rqst
; i
++) {
2536 for (j
= 0; j
< rqst
[i
].rq_nvec
; j
++) {
2538 * The first rqst has a transform header where the
2539 * first 20 bytes are not part of the encrypted blob
2541 skip
= (i
== 0) && (j
== 0) ? 20 : 0;
2542 smb2_sg_set_buf(&sg
[idx
++],
2543 rqst
[i
].rq_iov
[j
].iov_base
+ skip
,
2544 rqst
[i
].rq_iov
[j
].iov_len
- skip
);
2547 for (j
= 0; j
< rqst
[i
].rq_npages
; j
++) {
2548 unsigned int len
, offset
;
2550 rqst_page_get_length(&rqst
[i
], j
, &len
, &offset
);
2551 sg_set_page(&sg
[idx
++], rqst
[i
].rq_pages
[j
], len
, offset
);
2554 smb2_sg_set_buf(&sg
[idx
], sign
, SMB2_SIGNATURE_SIZE
);
2559 smb2_get_enc_key(struct TCP_Server_Info
*server
, __u64 ses_id
, int enc
, u8
*key
)
2561 struct cifs_ses
*ses
;
2564 spin_lock(&cifs_tcp_ses_lock
);
2565 list_for_each_entry(ses
, &server
->smb_ses_list
, smb_ses_list
) {
2566 if (ses
->Suid
!= ses_id
)
2568 ses_enc_key
= enc
? ses
->smb3encryptionkey
:
2569 ses
->smb3decryptionkey
;
2570 memcpy(key
, ses_enc_key
, SMB3_SIGN_KEY_SIZE
);
2571 spin_unlock(&cifs_tcp_ses_lock
);
2574 spin_unlock(&cifs_tcp_ses_lock
);
2579 * Encrypt or decrypt @rqst message. @rqst[0] has the following format:
2580 * iov[0] - transform header (associate data),
2581 * iov[1-N] - SMB2 header and pages - data to encrypt.
2582 * On success return encrypted data in iov[1-N] and pages, leave iov[0]
2586 crypt_message(struct TCP_Server_Info
*server
, int num_rqst
,
2587 struct smb_rqst
*rqst
, int enc
)
2589 struct smb2_transform_hdr
*tr_hdr
=
2590 (struct smb2_transform_hdr
*)rqst
[0].rq_iov
[0].iov_base
;
2591 unsigned int assoc_data_len
= sizeof(struct smb2_transform_hdr
) - 20;
2593 struct scatterlist
*sg
;
2594 u8 sign
[SMB2_SIGNATURE_SIZE
] = {};
2595 u8 key
[SMB3_SIGN_KEY_SIZE
];
2596 struct aead_request
*req
;
2598 unsigned int iv_len
;
2599 DECLARE_CRYPTO_WAIT(wait
);
2600 struct crypto_aead
*tfm
;
2601 unsigned int crypt_len
= le32_to_cpu(tr_hdr
->OriginalMessageSize
);
2603 rc
= smb2_get_enc_key(server
, tr_hdr
->SessionId
, enc
, key
);
2605 cifs_dbg(VFS
, "%s: Could not get %scryption key\n", __func__
,
2610 rc
= smb3_crypto_aead_allocate(server
);
2612 cifs_dbg(VFS
, "%s: crypto alloc failed\n", __func__
);
2616 tfm
= enc
? server
->secmech
.ccmaesencrypt
:
2617 server
->secmech
.ccmaesdecrypt
;
2618 rc
= crypto_aead_setkey(tfm
, key
, SMB3_SIGN_KEY_SIZE
);
2620 cifs_dbg(VFS
, "%s: Failed to set aead key %d\n", __func__
, rc
);
2624 rc
= crypto_aead_setauthsize(tfm
, SMB2_SIGNATURE_SIZE
);
2626 cifs_dbg(VFS
, "%s: Failed to set authsize %d\n", __func__
, rc
);
2630 req
= aead_request_alloc(tfm
, GFP_KERNEL
);
2632 cifs_dbg(VFS
, "%s: Failed to alloc aead request", __func__
);
2637 memcpy(sign
, &tr_hdr
->Signature
, SMB2_SIGNATURE_SIZE
);
2638 crypt_len
+= SMB2_SIGNATURE_SIZE
;
2641 sg
= init_sg(num_rqst
, rqst
, sign
);
2643 cifs_dbg(VFS
, "%s: Failed to init sg", __func__
);
2648 iv_len
= crypto_aead_ivsize(tfm
);
2649 iv
= kzalloc(iv_len
, GFP_KERNEL
);
2651 cifs_dbg(VFS
, "%s: Failed to alloc IV", __func__
);
2656 memcpy(iv
+ 1, (char *)tr_hdr
->Nonce
, SMB3_AES128CMM_NONCE
);
2658 aead_request_set_crypt(req
, sg
, sg
, crypt_len
, iv
);
2659 aead_request_set_ad(req
, assoc_data_len
);
2661 aead_request_set_callback(req
, CRYPTO_TFM_REQ_MAY_BACKLOG
,
2662 crypto_req_done
, &wait
);
2664 rc
= crypto_wait_req(enc
? crypto_aead_encrypt(req
)
2665 : crypto_aead_decrypt(req
), &wait
);
2668 memcpy(&tr_hdr
->Signature
, sign
, SMB2_SIGNATURE_SIZE
);
2679 smb3_free_compound_rqst(int num_rqst
, struct smb_rqst
*rqst
)
2683 for (i
= 0; i
< num_rqst
; i
++) {
2684 if (rqst
[i
].rq_pages
) {
2685 for (j
= rqst
[i
].rq_npages
- 1; j
>= 0; j
--)
2686 put_page(rqst
[i
].rq_pages
[j
]);
2687 kfree(rqst
[i
].rq_pages
);
2693 * This function will initialize new_rq and encrypt the content.
2694 * The first entry, new_rq[0], only contains a single iov which contains
2695 * a smb2_transform_hdr and is pre-allocated by the caller.
2696 * This function then populates new_rq[1+] with the content from olq_rq[0+].
2698 * The end result is an array of smb_rqst structures where the first structure
2699 * only contains a single iov for the transform header which we then can pass
2700 * to crypt_message().
2702 * new_rq[0].rq_iov[0] : smb2_transform_hdr pre-allocated by the caller
2703 * new_rq[1+].rq_iov[*] == old_rq[0+].rq_iov[*] : SMB2/3 requests
2706 smb3_init_transform_rq(struct TCP_Server_Info
*server
, int num_rqst
,
2707 struct smb_rqst
*new_rq
, struct smb_rqst
*old_rq
)
2709 struct page
**pages
;
2710 struct smb2_transform_hdr
*tr_hdr
= new_rq
[0].rq_iov
[0].iov_base
;
2711 unsigned int npages
;
2712 unsigned int orig_len
= 0;
2716 for (i
= 1; i
< num_rqst
; i
++) {
2717 npages
= old_rq
[i
- 1].rq_npages
;
2718 pages
= kmalloc_array(npages
, sizeof(struct page
*),
2723 new_rq
[i
].rq_pages
= pages
;
2724 new_rq
[i
].rq_npages
= npages
;
2725 new_rq
[i
].rq_offset
= old_rq
[i
- 1].rq_offset
;
2726 new_rq
[i
].rq_pagesz
= old_rq
[i
- 1].rq_pagesz
;
2727 new_rq
[i
].rq_tailsz
= old_rq
[i
- 1].rq_tailsz
;
2728 new_rq
[i
].rq_iov
= old_rq
[i
- 1].rq_iov
;
2729 new_rq
[i
].rq_nvec
= old_rq
[i
- 1].rq_nvec
;
2731 orig_len
+= smb_rqst_len(server
, &old_rq
[i
- 1]);
2733 for (j
= 0; j
< npages
; j
++) {
2734 pages
[j
] = alloc_page(GFP_KERNEL
|__GFP_HIGHMEM
);
2739 /* copy pages form the old */
2740 for (j
= 0; j
< npages
; j
++) {
2742 unsigned int offset
, len
;
2744 rqst_page_get_length(&new_rq
[i
], j
, &len
, &offset
);
2746 dst
= (char *) kmap(new_rq
[i
].rq_pages
[j
]) + offset
;
2747 src
= (char *) kmap(old_rq
[i
- 1].rq_pages
[j
]) + offset
;
2749 memcpy(dst
, src
, len
);
2750 kunmap(new_rq
[i
].rq_pages
[j
]);
2751 kunmap(old_rq
[i
- 1].rq_pages
[j
]);
2755 /* fill the 1st iov with a transform header */
2756 fill_transform_hdr(tr_hdr
, orig_len
, old_rq
);
2758 rc
= crypt_message(server
, num_rqst
, new_rq
, 1);
2759 cifs_dbg(FYI
, "encrypt message returned %d", rc
);
2766 smb3_free_compound_rqst(num_rqst
- 1, &new_rq
[1]);
2771 smb3_is_transform_hdr(void *buf
)
2773 struct smb2_transform_hdr
*trhdr
= buf
;
2775 return trhdr
->ProtocolId
== SMB2_TRANSFORM_PROTO_NUM
;
2779 decrypt_raw_data(struct TCP_Server_Info
*server
, char *buf
,
2780 unsigned int buf_data_size
, struct page
**pages
,
2781 unsigned int npages
, unsigned int page_data_size
)
2784 struct smb_rqst rqst
= {NULL
};
2787 iov
[0].iov_base
= buf
;
2788 iov
[0].iov_len
= sizeof(struct smb2_transform_hdr
);
2789 iov
[1].iov_base
= buf
+ sizeof(struct smb2_transform_hdr
);
2790 iov
[1].iov_len
= buf_data_size
;
2794 rqst
.rq_pages
= pages
;
2795 rqst
.rq_npages
= npages
;
2796 rqst
.rq_pagesz
= PAGE_SIZE
;
2797 rqst
.rq_tailsz
= (page_data_size
% PAGE_SIZE
) ? : PAGE_SIZE
;
2799 rc
= crypt_message(server
, 1, &rqst
, 0);
2800 cifs_dbg(FYI
, "decrypt message returned %d\n", rc
);
2805 memmove(buf
, iov
[1].iov_base
, buf_data_size
);
2807 server
->total_read
= buf_data_size
+ page_data_size
;
2813 read_data_into_pages(struct TCP_Server_Info
*server
, struct page
**pages
,
2814 unsigned int npages
, unsigned int len
)
2819 for (i
= 0; i
< npages
; i
++) {
2820 struct page
*page
= pages
[i
];
2824 if (len
>= PAGE_SIZE
) {
2825 /* enough data to fill the page */
2829 zero_user(page
, len
, PAGE_SIZE
- len
);
2832 length
= cifs_read_page_from_socket(server
, page
, 0, n
);
2835 server
->total_read
+= length
;
2842 init_read_bvec(struct page
**pages
, unsigned int npages
, unsigned int data_size
,
2843 unsigned int cur_off
, struct bio_vec
**page_vec
)
2845 struct bio_vec
*bvec
;
2848 bvec
= kcalloc(npages
, sizeof(struct bio_vec
), GFP_KERNEL
);
2852 for (i
= 0; i
< npages
; i
++) {
2853 bvec
[i
].bv_page
= pages
[i
];
2854 bvec
[i
].bv_offset
= (i
== 0) ? cur_off
: 0;
2855 bvec
[i
].bv_len
= min_t(unsigned int, PAGE_SIZE
, data_size
);
2856 data_size
-= bvec
[i
].bv_len
;
2859 if (data_size
!= 0) {
2860 cifs_dbg(VFS
, "%s: something went wrong\n", __func__
);
2870 handle_read_data(struct TCP_Server_Info
*server
, struct mid_q_entry
*mid
,
2871 char *buf
, unsigned int buf_len
, struct page
**pages
,
2872 unsigned int npages
, unsigned int page_data_size
)
2874 unsigned int data_offset
;
2875 unsigned int data_len
;
2876 unsigned int cur_off
;
2877 unsigned int cur_page_idx
;
2878 unsigned int pad_len
;
2879 struct cifs_readdata
*rdata
= mid
->callback_data
;
2880 struct smb2_sync_hdr
*shdr
= (struct smb2_sync_hdr
*)buf
;
2881 struct bio_vec
*bvec
= NULL
;
2882 struct iov_iter iter
;
2885 bool use_rdma_mr
= false;
2887 if (shdr
->Command
!= SMB2_READ
) {
2888 cifs_dbg(VFS
, "only big read responses are supported\n");
2892 if (server
->ops
->is_session_expired
&&
2893 server
->ops
->is_session_expired(buf
)) {
2894 cifs_reconnect(server
);
2895 wake_up(&server
->response_q
);
2899 if (server
->ops
->is_status_pending
&&
2900 server
->ops
->is_status_pending(buf
, server
, 0))
2903 rdata
->result
= server
->ops
->map_error(buf
, false);
2904 if (rdata
->result
!= 0) {
2905 cifs_dbg(FYI
, "%s: server returned error %d\n",
2906 __func__
, rdata
->result
);
2907 dequeue_mid(mid
, rdata
->result
);
2911 data_offset
= server
->ops
->read_data_offset(buf
);
2912 #ifdef CONFIG_CIFS_SMB_DIRECT
2913 use_rdma_mr
= rdata
->mr
;
2915 data_len
= server
->ops
->read_data_length(buf
, use_rdma_mr
);
2917 if (data_offset
< server
->vals
->read_rsp_size
) {
2919 * win2k8 sometimes sends an offset of 0 when the read
2920 * is beyond the EOF. Treat it as if the data starts just after
2923 cifs_dbg(FYI
, "%s: data offset (%u) inside read response header\n",
2924 __func__
, data_offset
);
2925 data_offset
= server
->vals
->read_rsp_size
;
2926 } else if (data_offset
> MAX_CIFS_SMALL_BUFFER_SIZE
) {
2927 /* data_offset is beyond the end of smallbuf */
2928 cifs_dbg(FYI
, "%s: data offset (%u) beyond end of smallbuf\n",
2929 __func__
, data_offset
);
2930 rdata
->result
= -EIO
;
2931 dequeue_mid(mid
, rdata
->result
);
2935 pad_len
= data_offset
- server
->vals
->read_rsp_size
;
2937 if (buf_len
<= data_offset
) {
2938 /* read response payload is in pages */
2939 cur_page_idx
= pad_len
/ PAGE_SIZE
;
2940 cur_off
= pad_len
% PAGE_SIZE
;
2942 if (cur_page_idx
!= 0) {
2943 /* data offset is beyond the 1st page of response */
2944 cifs_dbg(FYI
, "%s: data offset (%u) beyond 1st page of response\n",
2945 __func__
, data_offset
);
2946 rdata
->result
= -EIO
;
2947 dequeue_mid(mid
, rdata
->result
);
2951 if (data_len
> page_data_size
- pad_len
) {
2952 /* data_len is corrupt -- discard frame */
2953 rdata
->result
= -EIO
;
2954 dequeue_mid(mid
, rdata
->result
);
2958 rdata
->result
= init_read_bvec(pages
, npages
, page_data_size
,
2960 if (rdata
->result
!= 0) {
2961 dequeue_mid(mid
, rdata
->result
);
2965 iov_iter_bvec(&iter
, WRITE
, bvec
, npages
, data_len
);
2966 } else if (buf_len
>= data_offset
+ data_len
) {
2967 /* read response payload is in buf */
2968 WARN_ONCE(npages
> 0, "read data can be either in buf or in pages");
2969 iov
.iov_base
= buf
+ data_offset
;
2970 iov
.iov_len
= data_len
;
2971 iov_iter_kvec(&iter
, WRITE
, &iov
, 1, data_len
);
2973 /* read response payload cannot be in both buf and pages */
2974 WARN_ONCE(1, "buf can not contain only a part of read data");
2975 rdata
->result
= -EIO
;
2976 dequeue_mid(mid
, rdata
->result
);
2980 /* set up first iov for signature check */
2981 rdata
->iov
[0].iov_base
= buf
;
2982 rdata
->iov
[0].iov_len
= 4;
2983 rdata
->iov
[1].iov_base
= buf
+ 4;
2984 rdata
->iov
[1].iov_len
= server
->vals
->read_rsp_size
- 4;
2985 cifs_dbg(FYI
, "0: iov_base=%p iov_len=%zu\n",
2986 rdata
->iov
[0].iov_base
, server
->vals
->read_rsp_size
);
2988 length
= rdata
->copy_into_pages(server
, rdata
, &iter
);
2995 dequeue_mid(mid
, false);
3000 receive_encrypted_read(struct TCP_Server_Info
*server
, struct mid_q_entry
**mid
)
3002 char *buf
= server
->smallbuf
;
3003 struct smb2_transform_hdr
*tr_hdr
= (struct smb2_transform_hdr
*)buf
;
3004 unsigned int npages
;
3005 struct page
**pages
;
3007 unsigned int buflen
= server
->pdu_size
;
3011 len
= min_t(unsigned int, buflen
, server
->vals
->read_rsp_size
+
3012 sizeof(struct smb2_transform_hdr
)) - HEADER_SIZE(server
) + 1;
3014 rc
= cifs_read_from_socket(server
, buf
+ HEADER_SIZE(server
) - 1, len
);
3017 server
->total_read
+= rc
;
3019 len
= le32_to_cpu(tr_hdr
->OriginalMessageSize
) -
3020 server
->vals
->read_rsp_size
;
3021 npages
= DIV_ROUND_UP(len
, PAGE_SIZE
);
3023 pages
= kmalloc_array(npages
, sizeof(struct page
*), GFP_KERNEL
);
3029 for (; i
< npages
; i
++) {
3030 pages
[i
] = alloc_page(GFP_KERNEL
|__GFP_HIGHMEM
);
3037 /* read read data into pages */
3038 rc
= read_data_into_pages(server
, pages
, npages
, len
);
3042 rc
= cifs_discard_remaining_data(server
);
3046 rc
= decrypt_raw_data(server
, buf
, server
->vals
->read_rsp_size
,
3047 pages
, npages
, len
);
3051 *mid
= smb2_find_mid(server
, buf
);
3053 cifs_dbg(FYI
, "mid not found\n");
3055 cifs_dbg(FYI
, "mid found\n");
3056 (*mid
)->decrypted
= true;
3057 rc
= handle_read_data(server
, *mid
, buf
,
3058 server
->vals
->read_rsp_size
,
3059 pages
, npages
, len
);
3063 for (i
= i
- 1; i
>= 0; i
--)
3068 cifs_discard_remaining_data(server
);
3073 receive_encrypted_standard(struct TCP_Server_Info
*server
,
3074 struct mid_q_entry
**mids
, char **bufs
,
3078 char *buf
= server
->smallbuf
;
3080 struct smb2_sync_hdr
*shdr
;
3081 unsigned int pdu_length
= server
->pdu_size
;
3082 unsigned int buf_size
;
3083 struct mid_q_entry
*mid_entry
;
3085 char *next_buffer
= NULL
;
3089 /* switch to large buffer if too big for a small one */
3090 if (pdu_length
> MAX_CIFS_SMALL_BUFFER_SIZE
) {
3091 server
->large_buf
= true;
3092 memcpy(server
->bigbuf
, buf
, server
->total_read
);
3093 buf
= server
->bigbuf
;
3096 /* now read the rest */
3097 length
= cifs_read_from_socket(server
, buf
+ HEADER_SIZE(server
) - 1,
3098 pdu_length
- HEADER_SIZE(server
) + 1);
3101 server
->total_read
+= length
;
3103 buf_size
= pdu_length
- sizeof(struct smb2_transform_hdr
);
3104 length
= decrypt_raw_data(server
, buf
, buf_size
, NULL
, 0, 0);
3108 next_is_large
= server
->large_buf
;
3110 shdr
= (struct smb2_sync_hdr
*)buf
;
3111 if (shdr
->NextCommand
) {
3112 if (next_is_large
) {
3113 tmpbuf
= server
->bigbuf
;
3114 next_buffer
= (char *)cifs_buf_get();
3116 tmpbuf
= server
->smallbuf
;
3117 next_buffer
= (char *)cifs_small_buf_get();
3120 tmpbuf
+ le32_to_cpu(shdr
->NextCommand
),
3121 pdu_length
- le32_to_cpu(shdr
->NextCommand
));
3124 mid_entry
= smb2_find_mid(server
, buf
);
3125 if (mid_entry
== NULL
)
3126 cifs_dbg(FYI
, "mid not found\n");
3128 cifs_dbg(FYI
, "mid found\n");
3129 mid_entry
->decrypted
= true;
3130 mid_entry
->resp_buf_size
= server
->pdu_size
;
3133 if (*num_mids
>= MAX_COMPOUND
) {
3134 cifs_dbg(VFS
, "too many PDUs in compound\n");
3137 bufs
[*num_mids
] = buf
;
3138 mids
[(*num_mids
)++] = mid_entry
;
3140 if (mid_entry
&& mid_entry
->handle
)
3141 ret
= mid_entry
->handle(server
, mid_entry
);
3143 ret
= cifs_handle_standard(server
, mid_entry
);
3145 if (ret
== 0 && shdr
->NextCommand
) {
3146 pdu_length
-= le32_to_cpu(shdr
->NextCommand
);
3147 server
->large_buf
= next_is_large
;
3149 server
->bigbuf
= next_buffer
;
3151 server
->smallbuf
= next_buffer
;
3153 buf
+= le32_to_cpu(shdr
->NextCommand
);
3161 smb3_receive_transform(struct TCP_Server_Info
*server
,
3162 struct mid_q_entry
**mids
, char **bufs
, int *num_mids
)
3164 char *buf
= server
->smallbuf
;
3165 unsigned int pdu_length
= server
->pdu_size
;
3166 struct smb2_transform_hdr
*tr_hdr
= (struct smb2_transform_hdr
*)buf
;
3167 unsigned int orig_len
= le32_to_cpu(tr_hdr
->OriginalMessageSize
);
3169 if (pdu_length
< sizeof(struct smb2_transform_hdr
) +
3170 sizeof(struct smb2_sync_hdr
)) {
3171 cifs_dbg(VFS
, "Transform message is too small (%u)\n",
3173 cifs_reconnect(server
);
3174 wake_up(&server
->response_q
);
3175 return -ECONNABORTED
;
3178 if (pdu_length
< orig_len
+ sizeof(struct smb2_transform_hdr
)) {
3179 cifs_dbg(VFS
, "Transform message is broken\n");
3180 cifs_reconnect(server
);
3181 wake_up(&server
->response_q
);
3182 return -ECONNABORTED
;
3185 /* TODO: add support for compounds containing READ. */
3186 if (pdu_length
> CIFSMaxBufSize
+ MAX_HEADER_SIZE(server
))
3187 return receive_encrypted_read(server
, &mids
[0]);
3189 return receive_encrypted_standard(server
, mids
, bufs
, num_mids
);
3193 smb3_handle_read_data(struct TCP_Server_Info
*server
, struct mid_q_entry
*mid
)
3195 char *buf
= server
->large_buf
? server
->bigbuf
: server
->smallbuf
;
3197 return handle_read_data(server
, mid
, buf
, server
->pdu_size
,
3202 smb2_next_header(char *buf
)
3204 struct smb2_sync_hdr
*hdr
= (struct smb2_sync_hdr
*)buf
;
3205 struct smb2_transform_hdr
*t_hdr
= (struct smb2_transform_hdr
*)buf
;
3207 if (hdr
->ProtocolId
== SMB2_TRANSFORM_PROTO_NUM
)
3208 return sizeof(struct smb2_transform_hdr
) +
3209 le32_to_cpu(t_hdr
->OriginalMessageSize
);
3211 return le32_to_cpu(hdr
->NextCommand
);
3214 struct smb_version_operations smb20_operations
= {
3215 .compare_fids
= smb2_compare_fids
,
3216 .setup_request
= smb2_setup_request
,
3217 .setup_async_request
= smb2_setup_async_request
,
3218 .check_receive
= smb2_check_receive
,
3219 .add_credits
= smb2_add_credits
,
3220 .set_credits
= smb2_set_credits
,
3221 .get_credits_field
= smb2_get_credits_field
,
3222 .get_credits
= smb2_get_credits
,
3223 .wait_mtu_credits
= cifs_wait_mtu_credits
,
3224 .get_next_mid
= smb2_get_next_mid
,
3225 .read_data_offset
= smb2_read_data_offset
,
3226 .read_data_length
= smb2_read_data_length
,
3227 .map_error
= map_smb2_to_linux_error
,
3228 .find_mid
= smb2_find_mid
,
3229 .check_message
= smb2_check_message
,
3230 .dump_detail
= smb2_dump_detail
,
3231 .clear_stats
= smb2_clear_stats
,
3232 .print_stats
= smb2_print_stats
,
3233 .is_oplock_break
= smb2_is_valid_oplock_break
,
3234 .handle_cancelled_mid
= smb2_handle_cancelled_mid
,
3235 .downgrade_oplock
= smb2_downgrade_oplock
,
3236 .need_neg
= smb2_need_neg
,
3237 .negotiate
= smb2_negotiate
,
3238 .negotiate_wsize
= smb2_negotiate_wsize
,
3239 .negotiate_rsize
= smb2_negotiate_rsize
,
3240 .sess_setup
= SMB2_sess_setup
,
3241 .logoff
= SMB2_logoff
,
3242 .tree_connect
= SMB2_tcon
,
3243 .tree_disconnect
= SMB2_tdis
,
3244 .qfs_tcon
= smb2_qfs_tcon
,
3245 .is_path_accessible
= smb2_is_path_accessible
,
3246 .can_echo
= smb2_can_echo
,
3248 .query_path_info
= smb2_query_path_info
,
3249 .get_srv_inum
= smb2_get_srv_inum
,
3250 .query_file_info
= smb2_query_file_info
,
3251 .set_path_size
= smb2_set_path_size
,
3252 .set_file_size
= smb2_set_file_size
,
3253 .set_file_info
= smb2_set_file_info
,
3254 .set_compression
= smb2_set_compression
,
3255 .mkdir
= smb2_mkdir
,
3256 .mkdir_setinfo
= smb2_mkdir_setinfo
,
3257 .rmdir
= smb2_rmdir
,
3258 .unlink
= smb2_unlink
,
3259 .rename
= smb2_rename_path
,
3260 .create_hardlink
= smb2_create_hardlink
,
3261 .query_symlink
= smb2_query_symlink
,
3262 .query_mf_symlink
= smb3_query_mf_symlink
,
3263 .create_mf_symlink
= smb3_create_mf_symlink
,
3264 .open
= smb2_open_file
,
3265 .set_fid
= smb2_set_fid
,
3266 .close
= smb2_close_file
,
3267 .flush
= smb2_flush_file
,
3268 .async_readv
= smb2_async_readv
,
3269 .async_writev
= smb2_async_writev
,
3270 .sync_read
= smb2_sync_read
,
3271 .sync_write
= smb2_sync_write
,
3272 .query_dir_first
= smb2_query_dir_first
,
3273 .query_dir_next
= smb2_query_dir_next
,
3274 .close_dir
= smb2_close_dir
,
3275 .calc_smb_size
= smb2_calc_size
,
3276 .is_status_pending
= smb2_is_status_pending
,
3277 .is_session_expired
= smb2_is_session_expired
,
3278 .oplock_response
= smb2_oplock_response
,
3279 .queryfs
= smb2_queryfs
,
3280 .mand_lock
= smb2_mand_lock
,
3281 .mand_unlock_range
= smb2_unlock_range
,
3282 .push_mand_locks
= smb2_push_mandatory_locks
,
3283 .get_lease_key
= smb2_get_lease_key
,
3284 .set_lease_key
= smb2_set_lease_key
,
3285 .new_lease_key
= smb2_new_lease_key
,
3286 .calc_signature
= smb2_calc_signature
,
3287 .is_read_op
= smb2_is_read_op
,
3288 .set_oplock_level
= smb2_set_oplock_level
,
3289 .create_lease_buf
= smb2_create_lease_buf
,
3290 .parse_lease_buf
= smb2_parse_lease_buf
,
3291 .copychunk_range
= smb2_copychunk_range
,
3292 .wp_retry_size
= smb2_wp_retry_size
,
3293 .dir_needs_close
= smb2_dir_needs_close
,
3294 .get_dfs_refer
= smb2_get_dfs_refer
,
3295 .select_sectype
= smb2_select_sectype
,
3296 #ifdef CONFIG_CIFS_XATTR
3297 .query_all_EAs
= smb2_query_eas
,
3298 .set_EA
= smb2_set_ea
,
3299 #endif /* CIFS_XATTR */
3300 #ifdef CONFIG_CIFS_ACL
3301 .get_acl
= get_smb2_acl
,
3302 .get_acl_by_fid
= get_smb2_acl_by_fid
,
3303 .set_acl
= set_smb2_acl
,
3304 #endif /* CIFS_ACL */
3305 .next_header
= smb2_next_header
,
3308 struct smb_version_operations smb21_operations
= {
3309 .compare_fids
= smb2_compare_fids
,
3310 .setup_request
= smb2_setup_request
,
3311 .setup_async_request
= smb2_setup_async_request
,
3312 .check_receive
= smb2_check_receive
,
3313 .add_credits
= smb2_add_credits
,
3314 .set_credits
= smb2_set_credits
,
3315 .get_credits_field
= smb2_get_credits_field
,
3316 .get_credits
= smb2_get_credits
,
3317 .wait_mtu_credits
= smb2_wait_mtu_credits
,
3318 .get_next_mid
= smb2_get_next_mid
,
3319 .read_data_offset
= smb2_read_data_offset
,
3320 .read_data_length
= smb2_read_data_length
,
3321 .map_error
= map_smb2_to_linux_error
,
3322 .find_mid
= smb2_find_mid
,
3323 .check_message
= smb2_check_message
,
3324 .dump_detail
= smb2_dump_detail
,
3325 .clear_stats
= smb2_clear_stats
,
3326 .print_stats
= smb2_print_stats
,
3327 .is_oplock_break
= smb2_is_valid_oplock_break
,
3328 .handle_cancelled_mid
= smb2_handle_cancelled_mid
,
3329 .downgrade_oplock
= smb2_downgrade_oplock
,
3330 .need_neg
= smb2_need_neg
,
3331 .negotiate
= smb2_negotiate
,
3332 .negotiate_wsize
= smb2_negotiate_wsize
,
3333 .negotiate_rsize
= smb2_negotiate_rsize
,
3334 .sess_setup
= SMB2_sess_setup
,
3335 .logoff
= SMB2_logoff
,
3336 .tree_connect
= SMB2_tcon
,
3337 .tree_disconnect
= SMB2_tdis
,
3338 .qfs_tcon
= smb2_qfs_tcon
,
3339 .is_path_accessible
= smb2_is_path_accessible
,
3340 .can_echo
= smb2_can_echo
,
3342 .query_path_info
= smb2_query_path_info
,
3343 .get_srv_inum
= smb2_get_srv_inum
,
3344 .query_file_info
= smb2_query_file_info
,
3345 .set_path_size
= smb2_set_path_size
,
3346 .set_file_size
= smb2_set_file_size
,
3347 .set_file_info
= smb2_set_file_info
,
3348 .set_compression
= smb2_set_compression
,
3349 .mkdir
= smb2_mkdir
,
3350 .mkdir_setinfo
= smb2_mkdir_setinfo
,
3351 .rmdir
= smb2_rmdir
,
3352 .unlink
= smb2_unlink
,
3353 .rename
= smb2_rename_path
,
3354 .create_hardlink
= smb2_create_hardlink
,
3355 .query_symlink
= smb2_query_symlink
,
3356 .query_mf_symlink
= smb3_query_mf_symlink
,
3357 .create_mf_symlink
= smb3_create_mf_symlink
,
3358 .open
= smb2_open_file
,
3359 .set_fid
= smb2_set_fid
,
3360 .close
= smb2_close_file
,
3361 .flush
= smb2_flush_file
,
3362 .async_readv
= smb2_async_readv
,
3363 .async_writev
= smb2_async_writev
,
3364 .sync_read
= smb2_sync_read
,
3365 .sync_write
= smb2_sync_write
,
3366 .query_dir_first
= smb2_query_dir_first
,
3367 .query_dir_next
= smb2_query_dir_next
,
3368 .close_dir
= smb2_close_dir
,
3369 .calc_smb_size
= smb2_calc_size
,
3370 .is_status_pending
= smb2_is_status_pending
,
3371 .is_session_expired
= smb2_is_session_expired
,
3372 .oplock_response
= smb2_oplock_response
,
3373 .queryfs
= smb2_queryfs
,
3374 .mand_lock
= smb2_mand_lock
,
3375 .mand_unlock_range
= smb2_unlock_range
,
3376 .push_mand_locks
= smb2_push_mandatory_locks
,
3377 .get_lease_key
= smb2_get_lease_key
,
3378 .set_lease_key
= smb2_set_lease_key
,
3379 .new_lease_key
= smb2_new_lease_key
,
3380 .calc_signature
= smb2_calc_signature
,
3381 .is_read_op
= smb21_is_read_op
,
3382 .set_oplock_level
= smb21_set_oplock_level
,
3383 .create_lease_buf
= smb2_create_lease_buf
,
3384 .parse_lease_buf
= smb2_parse_lease_buf
,
3385 .copychunk_range
= smb2_copychunk_range
,
3386 .wp_retry_size
= smb2_wp_retry_size
,
3387 .dir_needs_close
= smb2_dir_needs_close
,
3388 .enum_snapshots
= smb3_enum_snapshots
,
3389 .get_dfs_refer
= smb2_get_dfs_refer
,
3390 .select_sectype
= smb2_select_sectype
,
3391 #ifdef CONFIG_CIFS_XATTR
3392 .query_all_EAs
= smb2_query_eas
,
3393 .set_EA
= smb2_set_ea
,
3394 #endif /* CIFS_XATTR */
3395 #ifdef CONFIG_CIFS_ACL
3396 .get_acl
= get_smb2_acl
,
3397 .get_acl_by_fid
= get_smb2_acl_by_fid
,
3398 .set_acl
= set_smb2_acl
,
3399 #endif /* CIFS_ACL */
3400 .next_header
= smb2_next_header
,
3403 struct smb_version_operations smb30_operations
= {
3404 .compare_fids
= smb2_compare_fids
,
3405 .setup_request
= smb2_setup_request
,
3406 .setup_async_request
= smb2_setup_async_request
,
3407 .check_receive
= smb2_check_receive
,
3408 .add_credits
= smb2_add_credits
,
3409 .set_credits
= smb2_set_credits
,
3410 .get_credits_field
= smb2_get_credits_field
,
3411 .get_credits
= smb2_get_credits
,
3412 .wait_mtu_credits
= smb2_wait_mtu_credits
,
3413 .get_next_mid
= smb2_get_next_mid
,
3414 .read_data_offset
= smb2_read_data_offset
,
3415 .read_data_length
= smb2_read_data_length
,
3416 .map_error
= map_smb2_to_linux_error
,
3417 .find_mid
= smb2_find_mid
,
3418 .check_message
= smb2_check_message
,
3419 .dump_detail
= smb2_dump_detail
,
3420 .clear_stats
= smb2_clear_stats
,
3421 .print_stats
= smb2_print_stats
,
3422 .dump_share_caps
= smb2_dump_share_caps
,
3423 .is_oplock_break
= smb2_is_valid_oplock_break
,
3424 .handle_cancelled_mid
= smb2_handle_cancelled_mid
,
3425 .downgrade_oplock
= smb2_downgrade_oplock
,
3426 .need_neg
= smb2_need_neg
,
3427 .negotiate
= smb2_negotiate
,
3428 .negotiate_wsize
= smb2_negotiate_wsize
,
3429 .negotiate_rsize
= smb2_negotiate_rsize
,
3430 .sess_setup
= SMB2_sess_setup
,
3431 .logoff
= SMB2_logoff
,
3432 .tree_connect
= SMB2_tcon
,
3433 .tree_disconnect
= SMB2_tdis
,
3434 .qfs_tcon
= smb3_qfs_tcon
,
3435 .is_path_accessible
= smb2_is_path_accessible
,
3436 .can_echo
= smb2_can_echo
,
3438 .query_path_info
= smb2_query_path_info
,
3439 .get_srv_inum
= smb2_get_srv_inum
,
3440 .query_file_info
= smb2_query_file_info
,
3441 .set_path_size
= smb2_set_path_size
,
3442 .set_file_size
= smb2_set_file_size
,
3443 .set_file_info
= smb2_set_file_info
,
3444 .set_compression
= smb2_set_compression
,
3445 .mkdir
= smb2_mkdir
,
3446 .mkdir_setinfo
= smb2_mkdir_setinfo
,
3447 .rmdir
= smb2_rmdir
,
3448 .unlink
= smb2_unlink
,
3449 .rename
= smb2_rename_path
,
3450 .create_hardlink
= smb2_create_hardlink
,
3451 .query_symlink
= smb2_query_symlink
,
3452 .query_mf_symlink
= smb3_query_mf_symlink
,
3453 .create_mf_symlink
= smb3_create_mf_symlink
,
3454 .open
= smb2_open_file
,
3455 .set_fid
= smb2_set_fid
,
3456 .close
= smb2_close_file
,
3457 .flush
= smb2_flush_file
,
3458 .async_readv
= smb2_async_readv
,
3459 .async_writev
= smb2_async_writev
,
3460 .sync_read
= smb2_sync_read
,
3461 .sync_write
= smb2_sync_write
,
3462 .query_dir_first
= smb2_query_dir_first
,
3463 .query_dir_next
= smb2_query_dir_next
,
3464 .close_dir
= smb2_close_dir
,
3465 .calc_smb_size
= smb2_calc_size
,
3466 .is_status_pending
= smb2_is_status_pending
,
3467 .is_session_expired
= smb2_is_session_expired
,
3468 .oplock_response
= smb2_oplock_response
,
3469 .queryfs
= smb2_queryfs
,
3470 .mand_lock
= smb2_mand_lock
,
3471 .mand_unlock_range
= smb2_unlock_range
,
3472 .push_mand_locks
= smb2_push_mandatory_locks
,
3473 .get_lease_key
= smb2_get_lease_key
,
3474 .set_lease_key
= smb2_set_lease_key
,
3475 .new_lease_key
= smb2_new_lease_key
,
3476 .generate_signingkey
= generate_smb30signingkey
,
3477 .calc_signature
= smb3_calc_signature
,
3478 .set_integrity
= smb3_set_integrity
,
3479 .is_read_op
= smb21_is_read_op
,
3480 .set_oplock_level
= smb3_set_oplock_level
,
3481 .create_lease_buf
= smb3_create_lease_buf
,
3482 .parse_lease_buf
= smb3_parse_lease_buf
,
3483 .copychunk_range
= smb2_copychunk_range
,
3484 .duplicate_extents
= smb2_duplicate_extents
,
3485 .validate_negotiate
= smb3_validate_negotiate
,
3486 .wp_retry_size
= smb2_wp_retry_size
,
3487 .dir_needs_close
= smb2_dir_needs_close
,
3488 .fallocate
= smb3_fallocate
,
3489 .enum_snapshots
= smb3_enum_snapshots
,
3490 .init_transform_rq
= smb3_init_transform_rq
,
3491 .is_transform_hdr
= smb3_is_transform_hdr
,
3492 .receive_transform
= smb3_receive_transform
,
3493 .get_dfs_refer
= smb2_get_dfs_refer
,
3494 .select_sectype
= smb2_select_sectype
,
3495 #ifdef CONFIG_CIFS_XATTR
3496 .query_all_EAs
= smb2_query_eas
,
3497 .set_EA
= smb2_set_ea
,
3498 #endif /* CIFS_XATTR */
3499 #ifdef CONFIG_CIFS_ACL
3500 .get_acl
= get_smb2_acl
,
3501 .get_acl_by_fid
= get_smb2_acl_by_fid
,
3502 .set_acl
= set_smb2_acl
,
3503 #endif /* CIFS_ACL */
3504 .next_header
= smb2_next_header
,
3507 struct smb_version_operations smb311_operations
= {
3508 .compare_fids
= smb2_compare_fids
,
3509 .setup_request
= smb2_setup_request
,
3510 .setup_async_request
= smb2_setup_async_request
,
3511 .check_receive
= smb2_check_receive
,
3512 .add_credits
= smb2_add_credits
,
3513 .set_credits
= smb2_set_credits
,
3514 .get_credits_field
= smb2_get_credits_field
,
3515 .get_credits
= smb2_get_credits
,
3516 .wait_mtu_credits
= smb2_wait_mtu_credits
,
3517 .get_next_mid
= smb2_get_next_mid
,
3518 .read_data_offset
= smb2_read_data_offset
,
3519 .read_data_length
= smb2_read_data_length
,
3520 .map_error
= map_smb2_to_linux_error
,
3521 .find_mid
= smb2_find_mid
,
3522 .check_message
= smb2_check_message
,
3523 .dump_detail
= smb2_dump_detail
,
3524 .clear_stats
= smb2_clear_stats
,
3525 .print_stats
= smb2_print_stats
,
3526 .dump_share_caps
= smb2_dump_share_caps
,
3527 .is_oplock_break
= smb2_is_valid_oplock_break
,
3528 .handle_cancelled_mid
= smb2_handle_cancelled_mid
,
3529 .downgrade_oplock
= smb2_downgrade_oplock
,
3530 .need_neg
= smb2_need_neg
,
3531 .negotiate
= smb2_negotiate
,
3532 .negotiate_wsize
= smb2_negotiate_wsize
,
3533 .negotiate_rsize
= smb2_negotiate_rsize
,
3534 .sess_setup
= SMB2_sess_setup
,
3535 .logoff
= SMB2_logoff
,
3536 .tree_connect
= SMB2_tcon
,
3537 .tree_disconnect
= SMB2_tdis
,
3538 .qfs_tcon
= smb3_qfs_tcon
,
3539 .is_path_accessible
= smb2_is_path_accessible
,
3540 .can_echo
= smb2_can_echo
,
3542 .query_path_info
= smb2_query_path_info
,
3543 .get_srv_inum
= smb2_get_srv_inum
,
3544 .query_file_info
= smb2_query_file_info
,
3545 .set_path_size
= smb2_set_path_size
,
3546 .set_file_size
= smb2_set_file_size
,
3547 .set_file_info
= smb2_set_file_info
,
3548 .set_compression
= smb2_set_compression
,
3549 .mkdir
= smb2_mkdir
,
3550 .mkdir_setinfo
= smb2_mkdir_setinfo
,
3551 .posix_mkdir
= smb311_posix_mkdir
,
3552 .rmdir
= smb2_rmdir
,
3553 .unlink
= smb2_unlink
,
3554 .rename
= smb2_rename_path
,
3555 .create_hardlink
= smb2_create_hardlink
,
3556 .query_symlink
= smb2_query_symlink
,
3557 .query_mf_symlink
= smb3_query_mf_symlink
,
3558 .create_mf_symlink
= smb3_create_mf_symlink
,
3559 .open
= smb2_open_file
,
3560 .set_fid
= smb2_set_fid
,
3561 .close
= smb2_close_file
,
3562 .flush
= smb2_flush_file
,
3563 .async_readv
= smb2_async_readv
,
3564 .async_writev
= smb2_async_writev
,
3565 .sync_read
= smb2_sync_read
,
3566 .sync_write
= smb2_sync_write
,
3567 .query_dir_first
= smb2_query_dir_first
,
3568 .query_dir_next
= smb2_query_dir_next
,
3569 .close_dir
= smb2_close_dir
,
3570 .calc_smb_size
= smb2_calc_size
,
3571 .is_status_pending
= smb2_is_status_pending
,
3572 .is_session_expired
= smb2_is_session_expired
,
3573 .oplock_response
= smb2_oplock_response
,
3574 .queryfs
= smb311_queryfs
,
3575 .mand_lock
= smb2_mand_lock
,
3576 .mand_unlock_range
= smb2_unlock_range
,
3577 .push_mand_locks
= smb2_push_mandatory_locks
,
3578 .get_lease_key
= smb2_get_lease_key
,
3579 .set_lease_key
= smb2_set_lease_key
,
3580 .new_lease_key
= smb2_new_lease_key
,
3581 .generate_signingkey
= generate_smb311signingkey
,
3582 .calc_signature
= smb3_calc_signature
,
3583 .set_integrity
= smb3_set_integrity
,
3584 .is_read_op
= smb21_is_read_op
,
3585 .set_oplock_level
= smb3_set_oplock_level
,
3586 .create_lease_buf
= smb3_create_lease_buf
,
3587 .parse_lease_buf
= smb3_parse_lease_buf
,
3588 .copychunk_range
= smb2_copychunk_range
,
3589 .duplicate_extents
= smb2_duplicate_extents
,
3590 /* .validate_negotiate = smb3_validate_negotiate, */ /* not used in 3.11 */
3591 .wp_retry_size
= smb2_wp_retry_size
,
3592 .dir_needs_close
= smb2_dir_needs_close
,
3593 .fallocate
= smb3_fallocate
,
3594 .enum_snapshots
= smb3_enum_snapshots
,
3595 .init_transform_rq
= smb3_init_transform_rq
,
3596 .is_transform_hdr
= smb3_is_transform_hdr
,
3597 .receive_transform
= smb3_receive_transform
,
3598 .get_dfs_refer
= smb2_get_dfs_refer
,
3599 .select_sectype
= smb2_select_sectype
,
3600 #ifdef CONFIG_CIFS_XATTR
3601 .query_all_EAs
= smb2_query_eas
,
3602 .set_EA
= smb2_set_ea
,
3603 #endif /* CIFS_XATTR */
3604 #ifdef CONFIG_CIFS_ACL
3605 .get_acl
= get_smb2_acl
,
3606 .get_acl_by_fid
= get_smb2_acl_by_fid
,
3607 .set_acl
= set_smb2_acl
,
3608 #endif /* CIFS_ACL */
3609 .next_header
= smb2_next_header
,
3612 struct smb_version_values smb20_values
= {
3613 .version_string
= SMB20_VERSION_STRING
,
3614 .protocol_id
= SMB20_PROT_ID
,
3615 .req_capabilities
= 0, /* MBZ */
3616 .large_lock_type
= 0,
3617 .exclusive_lock_type
= SMB2_LOCKFLAG_EXCLUSIVE_LOCK
,
3618 .shared_lock_type
= SMB2_LOCKFLAG_SHARED_LOCK
,
3619 .unlock_lock_type
= SMB2_LOCKFLAG_UNLOCK
,
3620 .header_size
= sizeof(struct smb2_sync_hdr
),
3621 .header_preamble_size
= 0,
3622 .max_header_size
= MAX_SMB2_HDR_SIZE
,
3623 .read_rsp_size
= sizeof(struct smb2_read_rsp
) - 1,
3624 .lock_cmd
= SMB2_LOCK
,
3626 .cap_nt_find
= SMB2_NT_FIND
,
3627 .cap_large_files
= SMB2_LARGE_FILES
,
3628 .signing_enabled
= SMB2_NEGOTIATE_SIGNING_ENABLED
| SMB2_NEGOTIATE_SIGNING_REQUIRED
,
3629 .signing_required
= SMB2_NEGOTIATE_SIGNING_REQUIRED
,
3630 .create_lease_size
= sizeof(struct create_lease
),
3633 struct smb_version_values smb21_values
= {
3634 .version_string
= SMB21_VERSION_STRING
,
3635 .protocol_id
= SMB21_PROT_ID
,
3636 .req_capabilities
= 0, /* MBZ on negotiate req until SMB3 dialect */
3637 .large_lock_type
= 0,
3638 .exclusive_lock_type
= SMB2_LOCKFLAG_EXCLUSIVE_LOCK
,
3639 .shared_lock_type
= SMB2_LOCKFLAG_SHARED_LOCK
,
3640 .unlock_lock_type
= SMB2_LOCKFLAG_UNLOCK
,
3641 .header_size
= sizeof(struct smb2_sync_hdr
),
3642 .header_preamble_size
= 0,
3643 .max_header_size
= MAX_SMB2_HDR_SIZE
,
3644 .read_rsp_size
= sizeof(struct smb2_read_rsp
) - 1,
3645 .lock_cmd
= SMB2_LOCK
,
3647 .cap_nt_find
= SMB2_NT_FIND
,
3648 .cap_large_files
= SMB2_LARGE_FILES
,
3649 .signing_enabled
= SMB2_NEGOTIATE_SIGNING_ENABLED
| SMB2_NEGOTIATE_SIGNING_REQUIRED
,
3650 .signing_required
= SMB2_NEGOTIATE_SIGNING_REQUIRED
,
3651 .create_lease_size
= sizeof(struct create_lease
),
3654 struct smb_version_values smb3any_values
= {
3655 .version_string
= SMB3ANY_VERSION_STRING
,
3656 .protocol_id
= SMB302_PROT_ID
, /* doesn't matter, send protocol array */
3657 .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
,
3658 .large_lock_type
= 0,
3659 .exclusive_lock_type
= SMB2_LOCKFLAG_EXCLUSIVE_LOCK
,
3660 .shared_lock_type
= SMB2_LOCKFLAG_SHARED_LOCK
,
3661 .unlock_lock_type
= SMB2_LOCKFLAG_UNLOCK
,
3662 .header_size
= sizeof(struct smb2_sync_hdr
),
3663 .header_preamble_size
= 0,
3664 .max_header_size
= MAX_SMB2_HDR_SIZE
,
3665 .read_rsp_size
= sizeof(struct smb2_read_rsp
) - 1,
3666 .lock_cmd
= SMB2_LOCK
,
3668 .cap_nt_find
= SMB2_NT_FIND
,
3669 .cap_large_files
= SMB2_LARGE_FILES
,
3670 .signing_enabled
= SMB2_NEGOTIATE_SIGNING_ENABLED
| SMB2_NEGOTIATE_SIGNING_REQUIRED
,
3671 .signing_required
= SMB2_NEGOTIATE_SIGNING_REQUIRED
,
3672 .create_lease_size
= sizeof(struct create_lease_v2
),
3675 struct smb_version_values smbdefault_values
= {
3676 .version_string
= SMBDEFAULT_VERSION_STRING
,
3677 .protocol_id
= SMB302_PROT_ID
, /* doesn't matter, send protocol array */
3678 .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
,
3679 .large_lock_type
= 0,
3680 .exclusive_lock_type
= SMB2_LOCKFLAG_EXCLUSIVE_LOCK
,
3681 .shared_lock_type
= SMB2_LOCKFLAG_SHARED_LOCK
,
3682 .unlock_lock_type
= SMB2_LOCKFLAG_UNLOCK
,
3683 .header_size
= sizeof(struct smb2_sync_hdr
),
3684 .header_preamble_size
= 0,
3685 .max_header_size
= MAX_SMB2_HDR_SIZE
,
3686 .read_rsp_size
= sizeof(struct smb2_read_rsp
) - 1,
3687 .lock_cmd
= SMB2_LOCK
,
3689 .cap_nt_find
= SMB2_NT_FIND
,
3690 .cap_large_files
= SMB2_LARGE_FILES
,
3691 .signing_enabled
= SMB2_NEGOTIATE_SIGNING_ENABLED
| SMB2_NEGOTIATE_SIGNING_REQUIRED
,
3692 .signing_required
= SMB2_NEGOTIATE_SIGNING_REQUIRED
,
3693 .create_lease_size
= sizeof(struct create_lease_v2
),
3696 struct smb_version_values smb30_values
= {
3697 .version_string
= SMB30_VERSION_STRING
,
3698 .protocol_id
= SMB30_PROT_ID
,
3699 .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
,
3700 .large_lock_type
= 0,
3701 .exclusive_lock_type
= SMB2_LOCKFLAG_EXCLUSIVE_LOCK
,
3702 .shared_lock_type
= SMB2_LOCKFLAG_SHARED_LOCK
,
3703 .unlock_lock_type
= SMB2_LOCKFLAG_UNLOCK
,
3704 .header_size
= sizeof(struct smb2_sync_hdr
),
3705 .header_preamble_size
= 0,
3706 .max_header_size
= MAX_SMB2_HDR_SIZE
,
3707 .read_rsp_size
= sizeof(struct smb2_read_rsp
) - 1,
3708 .lock_cmd
= SMB2_LOCK
,
3710 .cap_nt_find
= SMB2_NT_FIND
,
3711 .cap_large_files
= SMB2_LARGE_FILES
,
3712 .signing_enabled
= SMB2_NEGOTIATE_SIGNING_ENABLED
| SMB2_NEGOTIATE_SIGNING_REQUIRED
,
3713 .signing_required
= SMB2_NEGOTIATE_SIGNING_REQUIRED
,
3714 .create_lease_size
= sizeof(struct create_lease_v2
),
3717 struct smb_version_values smb302_values
= {
3718 .version_string
= SMB302_VERSION_STRING
,
3719 .protocol_id
= SMB302_PROT_ID
,
3720 .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
,
3721 .large_lock_type
= 0,
3722 .exclusive_lock_type
= SMB2_LOCKFLAG_EXCLUSIVE_LOCK
,
3723 .shared_lock_type
= SMB2_LOCKFLAG_SHARED_LOCK
,
3724 .unlock_lock_type
= SMB2_LOCKFLAG_UNLOCK
,
3725 .header_size
= sizeof(struct smb2_sync_hdr
),
3726 .header_preamble_size
= 0,
3727 .max_header_size
= MAX_SMB2_HDR_SIZE
,
3728 .read_rsp_size
= sizeof(struct smb2_read_rsp
) - 1,
3729 .lock_cmd
= SMB2_LOCK
,
3731 .cap_nt_find
= SMB2_NT_FIND
,
3732 .cap_large_files
= SMB2_LARGE_FILES
,
3733 .signing_enabled
= SMB2_NEGOTIATE_SIGNING_ENABLED
| SMB2_NEGOTIATE_SIGNING_REQUIRED
,
3734 .signing_required
= SMB2_NEGOTIATE_SIGNING_REQUIRED
,
3735 .create_lease_size
= sizeof(struct create_lease_v2
),
3738 struct smb_version_values smb311_values
= {
3739 .version_string
= SMB311_VERSION_STRING
,
3740 .protocol_id
= SMB311_PROT_ID
,
3741 .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
,
3742 .large_lock_type
= 0,
3743 .exclusive_lock_type
= SMB2_LOCKFLAG_EXCLUSIVE_LOCK
,
3744 .shared_lock_type
= SMB2_LOCKFLAG_SHARED_LOCK
,
3745 .unlock_lock_type
= SMB2_LOCKFLAG_UNLOCK
,
3746 .header_size
= sizeof(struct smb2_sync_hdr
),
3747 .header_preamble_size
= 0,
3748 .max_header_size
= MAX_SMB2_HDR_SIZE
,
3749 .read_rsp_size
= sizeof(struct smb2_read_rsp
) - 1,
3750 .lock_cmd
= SMB2_LOCK
,
3752 .cap_nt_find
= SMB2_NT_FIND
,
3753 .cap_large_files
= SMB2_LARGE_FILES
,
3754 .signing_enabled
= SMB2_NEGOTIATE_SIGNING_ENABLED
| SMB2_NEGOTIATE_SIGNING_REQUIRED
,
3755 .signing_required
= SMB2_NEGOTIATE_SIGNING_REQUIRED
,
3756 .create_lease_size
= sizeof(struct create_lease_v2
),