1 // SPDX-License-Identifier: GPL-2.0
3 * SMB2 version specific operations
5 * Copyright (c) 2012, Jeff Layton <jlayton@redhat.com>
8 #include <linux/pagemap.h>
10 #include <linux/falloc.h>
11 #include <linux/scatterlist.h>
12 #include <linux/uuid.h>
13 #include <linux/sort.h>
14 #include <crypto/aead.h>
15 #include <linux/fiemap.h>
16 #include <uapi/linux/magic.h>
20 #include "smb2proto.h"
21 #include "cifsproto.h"
22 #include "cifs_debug.h"
23 #include "cifs_unicode.h"
24 #include "smb2status.h"
26 #include "cifs_ioctl.h"
27 #include "smbdirect.h"
29 #include "fs_context.h"
30 #include "cached_dir.h"
32 /* Change credits for different ops and return the total number of credits */
34 change_conf(struct TCP_Server_Info *server)
36 server->credits += server->echo_credits + server->oplock_credits;
37 if (server->credits > server->max_credits)
38 server->credits = server->max_credits;
39 server->oplock_credits = server->echo_credits = 0;
40 switch (server->credits) {
44 server->echoes = false;
45 server->oplocks = false;
48 server->echoes = true;
49 server->oplocks = false;
50 server->echo_credits = 1;
53 server->echoes = true;
55 server->oplocks = true;
56 server->oplock_credits = 1;
58 server->oplocks = false;
60 server->echo_credits = 1;
62 server->credits -= server->echo_credits + server->oplock_credits;
63 return server->credits + server->echo_credits + server->oplock_credits;
67 smb2_add_credits(struct TCP_Server_Info *server,
68 const struct cifs_credits *credits, const int optype)
71 int scredits, in_flight;
72 unsigned int add = credits->value;
73 unsigned int instance = credits->instance;
74 bool reconnect_detected = false;
75 bool reconnect_with_invalid_credits = false;
77 spin_lock(&server->req_lock);
78 val = server->ops->get_credits_field(server, optype);
80 /* eg found case where write overlapping reconnect messed up credits */
81 if (((optype & CIFS_OP_MASK) == CIFS_NEG_OP) && (*val != 0))
82 reconnect_with_invalid_credits = true;
84 if ((instance == 0) || (instance == server->reconnect_instance))
87 reconnect_detected = true;
90 *val = 65000; /* Don't get near 64K credits, avoid srv bugs */
91 pr_warn_once("server overflowed SMB3 credits\n");
92 trace_smb3_overflow_credits(server->CurrentMid,
93 server->conn_id, server->hostname, *val,
94 add, server->in_flight);
96 WARN_ON_ONCE(server->in_flight == 0);
98 if (server->in_flight == 0 &&
99 ((optype & CIFS_OP_MASK) != CIFS_NEG_OP) &&
100 ((optype & CIFS_OP_MASK) != CIFS_SESS_OP))
101 rc = change_conf(server);
103 * Sometimes server returns 0 credits on oplock break ack - we need to
104 * rebalance credits in this case.
106 else if (server->in_flight > 0 && server->oplock_credits == 0 &&
108 if (server->credits > 1) {
110 server->oplock_credits++;
112 } else if ((server->in_flight > 0) && (server->oplock_credits > 3) &&
113 ((optype & CIFS_OP_MASK) == CIFS_OBREAK_OP))
114 /* if now have too many oplock credits, rebalance so don't starve normal ops */
118 in_flight = server->in_flight;
119 spin_unlock(&server->req_lock);
120 wake_up(&server->request_q);
122 if (reconnect_detected) {
123 trace_smb3_reconnect_detected(server->CurrentMid,
124 server->conn_id, server->hostname, scredits, add, in_flight);
126 cifs_dbg(FYI, "trying to put %d credits from the old server instance %d\n",
130 if (reconnect_with_invalid_credits) {
131 trace_smb3_reconnect_with_invalid_credits(server->CurrentMid,
132 server->conn_id, server->hostname, scredits, add, in_flight);
133 cifs_dbg(FYI, "Negotiate operation when server credits is non-zero. Optype: %d, server credits: %d, credits added: %d\n",
134 optype, scredits, add);
137 spin_lock(&server->srv_lock);
138 if (server->tcpStatus == CifsNeedReconnect
139 || server->tcpStatus == CifsExiting) {
140 spin_unlock(&server->srv_lock);
143 spin_unlock(&server->srv_lock);
147 /* change_conf hasn't been executed */
150 cifs_server_dbg(VFS, "Possible client or server bug - zero credits\n");
153 cifs_server_dbg(VFS, "disabling echoes and oplocks\n");
156 cifs_dbg(FYI, "disabling oplocks\n");
159 /* change_conf rebalanced credits for different types */
163 trace_smb3_add_credits(server->CurrentMid,
164 server->conn_id, server->hostname, scredits, add, in_flight);
165 cifs_dbg(FYI, "%s: added %u credits total=%d\n", __func__, add, scredits);
169 smb2_set_credits(struct TCP_Server_Info *server, const int val)
171 int scredits, in_flight;
173 spin_lock(&server->req_lock);
174 server->credits = val;
176 server->reconnect_instance++;
178 * ChannelSequence updated for all channels in primary channel so that consistent
179 * across SMB3 requests sent on any channel. See MS-SMB2 3.2.4.1 and 3.2.7.1
181 if (SERVER_IS_CHAN(server))
182 server->primary_server->channel_sequence_num++;
184 server->channel_sequence_num++;
186 scredits = server->credits;
187 in_flight = server->in_flight;
188 spin_unlock(&server->req_lock);
190 trace_smb3_set_credits(server->CurrentMid,
191 server->conn_id, server->hostname, scredits, val, in_flight);
192 cifs_dbg(FYI, "%s: set %u credits\n", __func__, val);
194 /* don't log while holding the lock */
196 cifs_dbg(FYI, "set credits to 1 due to smb2 reconnect\n");
200 smb2_get_credits_field(struct TCP_Server_Info *server, const int optype)
204 return &server->echo_credits;
206 return &server->oplock_credits;
208 return &server->credits;
213 smb2_get_credits(struct mid_q_entry *mid)
215 return mid->credits_received;
219 smb2_wait_mtu_credits(struct TCP_Server_Info *server, unsigned int size,
220 unsigned int *num, struct cifs_credits *credits)
223 unsigned int scredits, in_flight;
225 spin_lock(&server->req_lock);
227 spin_unlock(&server->req_lock);
229 spin_lock(&server->srv_lock);
230 if (server->tcpStatus == CifsExiting) {
231 spin_unlock(&server->srv_lock);
234 spin_unlock(&server->srv_lock);
236 spin_lock(&server->req_lock);
237 if (server->credits <= 0) {
238 spin_unlock(&server->req_lock);
239 cifs_num_waiters_inc(server);
240 rc = wait_event_killable(server->request_q,
241 has_credits(server, &server->credits, 1));
242 cifs_num_waiters_dec(server);
245 spin_lock(&server->req_lock);
247 scredits = server->credits;
248 /* can deadlock with reopen */
250 *num = SMB2_MAX_BUFFER_SIZE;
252 credits->instance = 0;
256 /* leave some credits for reopen and other ops */
258 *num = min_t(unsigned int, size,
259 scredits * SMB2_MAX_BUFFER_SIZE);
262 DIV_ROUND_UP(*num, SMB2_MAX_BUFFER_SIZE);
263 credits->instance = server->reconnect_instance;
264 server->credits -= credits->value;
266 if (server->in_flight > server->max_in_flight)
267 server->max_in_flight = server->in_flight;
271 scredits = server->credits;
272 in_flight = server->in_flight;
273 spin_unlock(&server->req_lock);
275 trace_smb3_wait_credits(server->CurrentMid,
276 server->conn_id, server->hostname, scredits, -(credits->value), in_flight);
277 cifs_dbg(FYI, "%s: removed %u credits total=%d\n",
278 __func__, credits->value, scredits);
284 smb2_adjust_credits(struct TCP_Server_Info *server,
285 struct cifs_credits *credits,
286 const unsigned int payload_size)
288 int new_val = DIV_ROUND_UP(payload_size, SMB2_MAX_BUFFER_SIZE);
289 int scredits, in_flight;
291 if (!credits->value || credits->value == new_val)
294 if (credits->value < new_val) {
295 trace_smb3_too_many_credits(server->CurrentMid,
296 server->conn_id, server->hostname, 0, credits->value - new_val, 0);
297 cifs_server_dbg(VFS, "request has less credits (%d) than required (%d)",
298 credits->value, new_val);
303 spin_lock(&server->req_lock);
305 if (server->reconnect_instance != credits->instance) {
306 scredits = server->credits;
307 in_flight = server->in_flight;
308 spin_unlock(&server->req_lock);
310 trace_smb3_reconnect_detected(server->CurrentMid,
311 server->conn_id, server->hostname, scredits,
312 credits->value - new_val, in_flight);
313 cifs_server_dbg(VFS, "trying to return %d credits to old session\n",
314 credits->value - new_val);
318 server->credits += credits->value - new_val;
319 scredits = server->credits;
320 in_flight = server->in_flight;
321 spin_unlock(&server->req_lock);
322 wake_up(&server->request_q);
324 trace_smb3_adj_credits(server->CurrentMid,
325 server->conn_id, server->hostname, scredits,
326 credits->value - new_val, in_flight);
327 cifs_dbg(FYI, "%s: adjust added %u credits total=%d\n",
328 __func__, credits->value - new_val, scredits);
330 credits->value = new_val;
336 smb2_get_next_mid(struct TCP_Server_Info *server)
339 /* for SMB2 we need the current value */
340 spin_lock(&server->mid_lock);
341 mid = server->CurrentMid++;
342 spin_unlock(&server->mid_lock);
347 smb2_revert_current_mid(struct TCP_Server_Info *server, const unsigned int val)
349 spin_lock(&server->mid_lock);
350 if (server->CurrentMid >= val)
351 server->CurrentMid -= val;
352 spin_unlock(&server->mid_lock);
355 static struct mid_q_entry *
356 __smb2_find_mid(struct TCP_Server_Info *server, char *buf, bool dequeue)
358 struct mid_q_entry *mid;
359 struct smb2_hdr *shdr = (struct smb2_hdr *)buf;
360 __u64 wire_mid = le64_to_cpu(shdr->MessageId);
362 if (shdr->ProtocolId == SMB2_TRANSFORM_PROTO_NUM) {
363 cifs_server_dbg(VFS, "Encrypted frame parsing not supported yet\n");
367 spin_lock(&server->mid_lock);
368 list_for_each_entry(mid, &server->pending_mid_q, qhead) {
369 if ((mid->mid == wire_mid) &&
370 (mid->mid_state == MID_REQUEST_SUBMITTED) &&
371 (mid->command == shdr->Command)) {
372 kref_get(&mid->refcount);
374 list_del_init(&mid->qhead);
375 mid->mid_flags |= MID_DELETED;
377 spin_unlock(&server->mid_lock);
381 spin_unlock(&server->mid_lock);
385 static struct mid_q_entry *
386 smb2_find_mid(struct TCP_Server_Info *server, char *buf)
388 return __smb2_find_mid(server, buf, false);
391 static struct mid_q_entry *
392 smb2_find_dequeue_mid(struct TCP_Server_Info *server, char *buf)
394 return __smb2_find_mid(server, buf, true);
398 smb2_dump_detail(void *buf, struct TCP_Server_Info *server)
400 #ifdef CONFIG_CIFS_DEBUG2
401 struct smb2_hdr *shdr = (struct smb2_hdr *)buf;
403 cifs_server_dbg(VFS, "Cmd: %d Err: 0x%x Flags: 0x%x Mid: %llu Pid: %d\n",
404 shdr->Command, shdr->Status, shdr->Flags, shdr->MessageId,
405 shdr->Id.SyncId.ProcessId);
406 if (!server->ops->check_message(buf, server->total_read, server)) {
407 cifs_server_dbg(VFS, "smb buf %p len %u\n", buf,
408 server->ops->calc_smb_size(buf));
414 smb2_need_neg(struct TCP_Server_Info *server)
416 return server->max_read == 0;
420 smb2_negotiate(const unsigned int xid,
421 struct cifs_ses *ses,
422 struct TCP_Server_Info *server)
426 spin_lock(&server->mid_lock);
427 server->CurrentMid = 0;
428 spin_unlock(&server->mid_lock);
429 rc = SMB2_negotiate(xid, ses, server);
430 /* BB we probably don't need to retry with modern servers */
437 smb2_negotiate_wsize(struct cifs_tcon *tcon, struct smb3_fs_context *ctx)
439 struct TCP_Server_Info *server = tcon->ses->server;
442 /* start with specified wsize, or default */
443 wsize = ctx->wsize ? ctx->wsize : CIFS_DEFAULT_IOSIZE;
444 wsize = min_t(unsigned int, wsize, server->max_write);
445 if (!(server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU))
446 wsize = min_t(unsigned int, wsize, SMB2_MAX_BUFFER_SIZE);
452 smb3_negotiate_wsize(struct cifs_tcon *tcon, struct smb3_fs_context *ctx)
454 struct TCP_Server_Info *server = tcon->ses->server;
457 /* start with specified wsize, or default */
458 wsize = ctx->wsize ? ctx->wsize : SMB3_DEFAULT_IOSIZE;
459 wsize = min_t(unsigned int, wsize, server->max_write);
460 #ifdef CONFIG_CIFS_SMB_DIRECT
464 * Account for SMB2 data transfer packet header and
465 * possible encryption header
467 wsize = min_t(unsigned int,
469 server->smbd_conn->max_fragmented_send_size -
470 SMB2_READWRITE_PDU_HEADER_SIZE -
471 sizeof(struct smb2_transform_hdr));
473 wsize = min_t(unsigned int,
474 wsize, server->smbd_conn->max_readwrite_size);
477 if (!(server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU))
478 wsize = min_t(unsigned int, wsize, SMB2_MAX_BUFFER_SIZE);
484 smb2_negotiate_rsize(struct cifs_tcon *tcon, struct smb3_fs_context *ctx)
486 struct TCP_Server_Info *server = tcon->ses->server;
489 /* start with specified rsize, or default */
490 rsize = ctx->rsize ? ctx->rsize : CIFS_DEFAULT_IOSIZE;
491 rsize = min_t(unsigned int, rsize, server->max_read);
493 if (!(server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU))
494 rsize = min_t(unsigned int, rsize, SMB2_MAX_BUFFER_SIZE);
500 smb3_negotiate_rsize(struct cifs_tcon *tcon, struct smb3_fs_context *ctx)
502 struct TCP_Server_Info *server = tcon->ses->server;
505 /* start with specified rsize, or default */
506 rsize = ctx->rsize ? ctx->rsize : SMB3_DEFAULT_IOSIZE;
507 rsize = min_t(unsigned int, rsize, server->max_read);
508 #ifdef CONFIG_CIFS_SMB_DIRECT
512 * Account for SMB2 data transfer packet header and
513 * possible encryption header
515 rsize = min_t(unsigned int,
517 server->smbd_conn->max_fragmented_recv_size -
518 SMB2_READWRITE_PDU_HEADER_SIZE -
519 sizeof(struct smb2_transform_hdr));
521 rsize = min_t(unsigned int,
522 rsize, server->smbd_conn->max_readwrite_size);
526 if (!(server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU))
527 rsize = min_t(unsigned int, rsize, SMB2_MAX_BUFFER_SIZE);
533 * compare two interfaces a and b
534 * return 0 if everything matches.
535 * return 1 if a is rdma capable, or rss capable, or has higher link speed
536 * return -1 otherwise.
539 iface_cmp(struct cifs_server_iface *a, struct cifs_server_iface *b)
544 if (a->rdma_capable == b->rdma_capable) {
545 if (a->rss_capable == b->rss_capable) {
546 if (a->speed == b->speed) {
547 cmp_ret = cifs_ipaddr_cmp((struct sockaddr *) &a->sockaddr,
548 (struct sockaddr *) &b->sockaddr);
551 else if (cmp_ret > 0)
555 } else if (a->speed > b->speed)
559 } else if (a->rss_capable > b->rss_capable)
563 } else if (a->rdma_capable > b->rdma_capable)
570 parse_server_interfaces(struct network_interface_info_ioctl_rsp *buf,
571 size_t buf_len, struct cifs_ses *ses, bool in_mount)
573 struct network_interface_info_ioctl_rsp *p;
574 struct sockaddr_in *addr4;
575 struct sockaddr_in6 *addr6;
576 struct iface_info_ipv4 *p4;
577 struct iface_info_ipv6 *p6;
578 struct cifs_server_iface *info = NULL, *iface = NULL, *niface = NULL;
579 struct cifs_server_iface tmp_iface;
585 bytes_left = buf_len;
588 spin_lock(&ses->iface_lock);
589 /* do not query too frequently, this time with lock held */
590 if (ses->iface_last_update &&
591 time_before(jiffies, ses->iface_last_update +
592 (SMB_INTERFACE_POLL_INTERVAL * HZ))) {
593 spin_unlock(&ses->iface_lock);
598 * Go through iface_list and mark them as inactive
600 list_for_each_entry_safe(iface, niface, &ses->iface_list,
602 iface->is_active = 0;
604 spin_unlock(&ses->iface_lock);
607 * Samba server e.g. can return an empty interface list in some cases,
608 * which would only be a problem if we were requesting multichannel
610 if (bytes_left == 0) {
611 /* avoid spamming logs every 10 minutes, so log only in mount */
612 if ((ses->chan_max > 1) && in_mount)
614 "multichannel not available\n"
615 "Empty network interface list returned by server %s\n",
616 ses->server->hostname);
618 ses->iface_last_update = jiffies;
622 while (bytes_left >= (ssize_t)sizeof(*p)) {
623 memset(&tmp_iface, 0, sizeof(tmp_iface));
624 tmp_iface.speed = le64_to_cpu(p->LinkSpeed);
625 tmp_iface.rdma_capable = le32_to_cpu(p->Capability & RDMA_CAPABLE) ? 1 : 0;
626 tmp_iface.rss_capable = le32_to_cpu(p->Capability & RSS_CAPABLE) ? 1 : 0;
630 * The kernel and wire socket structures have the same
631 * layout and use network byte order but make the
632 * conversion explicit in case either one changes.
635 addr4 = (struct sockaddr_in *)&tmp_iface.sockaddr;
636 p4 = (struct iface_info_ipv4 *)p->Buffer;
637 addr4->sin_family = AF_INET;
638 memcpy(&addr4->sin_addr, &p4->IPv4Address, 4);
640 /* [MS-SMB2] 2.2.32.5.1.1 Clients MUST ignore these */
641 addr4->sin_port = cpu_to_be16(CIFS_PORT);
643 cifs_dbg(FYI, "%s: ipv4 %pI4\n", __func__,
647 addr6 = (struct sockaddr_in6 *)&tmp_iface.sockaddr;
648 p6 = (struct iface_info_ipv6 *)p->Buffer;
649 addr6->sin6_family = AF_INET6;
650 memcpy(&addr6->sin6_addr, &p6->IPv6Address, 16);
652 /* [MS-SMB2] 2.2.32.5.1.2 Clients MUST ignore these */
653 addr6->sin6_flowinfo = 0;
654 addr6->sin6_scope_id = 0;
655 addr6->sin6_port = cpu_to_be16(CIFS_PORT);
657 cifs_dbg(FYI, "%s: ipv6 %pI6\n", __func__,
662 "%s: skipping unsupported socket family\n",
668 * The iface_list is assumed to be sorted by speed.
669 * Check if the new interface exists in that list.
670 * NEVER change iface. it could be in use.
671 * Add a new one instead
673 spin_lock(&ses->iface_lock);
674 list_for_each_entry_safe(iface, niface, &ses->iface_list,
676 ret = iface_cmp(iface, &tmp_iface);
678 iface->is_active = 1;
679 spin_unlock(&ses->iface_lock);
681 } else if (ret < 0) {
682 /* all remaining ifaces are slower */
683 kref_get(&iface->refcount);
687 spin_unlock(&ses->iface_lock);
689 /* no match. insert the entry in the list */
690 info = kmalloc(sizeof(struct cifs_server_iface),
696 memcpy(info, &tmp_iface, sizeof(tmp_iface));
698 /* add this new entry to the list */
699 kref_init(&info->refcount);
702 cifs_dbg(FYI, "%s: adding iface %zu\n", __func__, ses->iface_count);
703 cifs_dbg(FYI, "%s: speed %zu bps\n", __func__, info->speed);
704 cifs_dbg(FYI, "%s: capabilities 0x%08x\n", __func__,
705 le32_to_cpu(p->Capability));
707 spin_lock(&ses->iface_lock);
708 if (!list_entry_is_head(iface, &ses->iface_list, iface_head)) {
709 list_add_tail(&info->iface_head, &iface->iface_head);
710 kref_put(&iface->refcount, release_iface);
712 list_add_tail(&info->iface_head, &ses->iface_list);
715 spin_unlock(&ses->iface_lock);
718 next = le32_to_cpu(p->Next);
720 bytes_left -= sizeof(*p);
723 p = (struct network_interface_info_ioctl_rsp *)((u8 *)p+next);
728 cifs_dbg(VFS, "%s: malformed interface info\n", __func__);
733 /* Azure rounds the buffer size up 8, to a 16 byte boundary */
734 if ((bytes_left > 8) || p->Next)
735 cifs_dbg(VFS, "%s: incomplete interface info\n", __func__);
737 ses->iface_last_update = jiffies;
741 * Go through the list again and put the inactive entries
743 spin_lock(&ses->iface_lock);
744 list_for_each_entry_safe(iface, niface, &ses->iface_list,
746 if (!iface->is_active) {
747 list_del(&iface->iface_head);
748 kref_put(&iface->refcount, release_iface);
752 spin_unlock(&ses->iface_lock);
758 SMB3_request_interfaces(const unsigned int xid, struct cifs_tcon *tcon, bool in_mount)
761 unsigned int ret_data_len = 0;
762 struct network_interface_info_ioctl_rsp *out_buf = NULL;
763 struct cifs_ses *ses = tcon->ses;
764 struct TCP_Server_Info *pserver;
766 /* do not query too frequently */
767 if (ses->iface_last_update &&
768 time_before(jiffies, ses->iface_last_update +
769 (SMB_INTERFACE_POLL_INTERVAL * HZ)))
772 rc = SMB2_ioctl(xid, tcon, NO_FILE_ID, NO_FILE_ID,
773 FSCTL_QUERY_NETWORK_INTERFACE_INFO,
774 NULL /* no data input */, 0 /* no data input */,
775 CIFSMaxBufSize, (char **)&out_buf, &ret_data_len);
776 if (rc == -EOPNOTSUPP) {
778 "server does not support query network interfaces\n");
780 } else if (rc != 0) {
781 cifs_tcon_dbg(VFS, "error %d on ioctl to get interface list\n", rc);
785 rc = parse_server_interfaces(out_buf, ret_data_len, ses, in_mount);
789 /* check if iface is still active */
790 spin_lock(&ses->chan_lock);
791 pserver = ses->chans[0].server;
792 if (pserver && !cifs_chan_is_iface_active(ses, pserver)) {
793 spin_unlock(&ses->chan_lock);
794 cifs_chan_update_iface(ses, pserver);
795 spin_lock(&ses->chan_lock);
797 spin_unlock(&ses->chan_lock);
805 smb3_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon,
806 struct cifs_sb_info *cifs_sb)
809 __le16 srch_path = 0; /* Null - open root of share */
810 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
811 struct cifs_open_parms oparms;
813 struct cached_fid *cfid = NULL;
815 oparms = (struct cifs_open_parms) {
818 .desired_access = FILE_READ_ATTRIBUTES,
819 .disposition = FILE_OPEN,
820 .create_options = cifs_create_options(cifs_sb, 0),
824 rc = open_cached_dir(xid, tcon, "", cifs_sb, false, &cfid);
826 memcpy(&fid, &cfid->fid, sizeof(struct cifs_fid));
828 rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL,
833 SMB3_request_interfaces(xid, tcon, true /* called during mount */);
835 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
836 FS_ATTRIBUTE_INFORMATION);
837 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
838 FS_DEVICE_INFORMATION);
839 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
840 FS_VOLUME_INFORMATION);
841 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
842 FS_SECTOR_SIZE_INFORMATION); /* SMB3 specific */
844 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
846 close_cached_dir(cfid);
850 smb2_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon,
851 struct cifs_sb_info *cifs_sb)
854 __le16 srch_path = 0; /* Null - open root of share */
855 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
856 struct cifs_open_parms oparms;
859 oparms = (struct cifs_open_parms) {
862 .desired_access = FILE_READ_ATTRIBUTES,
863 .disposition = FILE_OPEN,
864 .create_options = cifs_create_options(cifs_sb, 0),
868 rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL,
873 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
874 FS_ATTRIBUTE_INFORMATION);
875 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
876 FS_DEVICE_INFORMATION);
877 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
881 smb2_is_path_accessible(const unsigned int xid, struct cifs_tcon *tcon,
882 struct cifs_sb_info *cifs_sb, const char *full_path)
885 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
886 int err_buftype = CIFS_NO_BUFFER;
887 struct cifs_open_parms oparms;
888 struct kvec err_iov = {};
890 struct cached_fid *cfid;
894 rc = open_cached_dir(xid, tcon, full_path, cifs_sb, true, &cfid);
896 if (cfid->has_lease) {
897 close_cached_dir(cfid);
900 close_cached_dir(cfid);
903 utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb);
907 oparms = (struct cifs_open_parms) {
910 .desired_access = FILE_READ_ATTRIBUTES,
911 .disposition = FILE_OPEN,
912 .create_options = cifs_create_options(cifs_sb, 0),
916 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL,
917 &err_iov, &err_buftype);
919 struct smb2_hdr *hdr = err_iov.iov_base;
921 if (unlikely(!hdr || err_buftype == CIFS_NO_BUFFER))
924 if (rc != -EREMOTE && hdr->Status == STATUS_OBJECT_NAME_INVALID) {
925 rc2 = cifs_inval_name_dfs_link_error(xid, tcon, cifs_sb,
934 if (rc == -EREMOTE && IS_ENABLED(CONFIG_CIFS_DFS_UPCALL) && cifs_sb &&
935 (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_DFS))
940 rc = SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
943 free_rsp_buf(err_buftype, err_iov.iov_base);
948 static int smb2_get_srv_inum(const unsigned int xid, struct cifs_tcon *tcon,
949 struct cifs_sb_info *cifs_sb, const char *full_path,
950 u64 *uniqueid, struct cifs_open_info_data *data)
952 *uniqueid = le64_to_cpu(data->fi.IndexNumber);
956 static int smb2_query_file_info(const unsigned int xid, struct cifs_tcon *tcon,
957 struct cifsFileInfo *cfile, struct cifs_open_info_data *data)
959 struct cifs_fid *fid = &cfile->fid;
961 if (cfile->symlink_target) {
962 data->symlink_target = kstrdup(cfile->symlink_target, GFP_KERNEL);
963 if (!data->symlink_target)
966 return SMB2_query_info(xid, tcon, fid->persistent_fid, fid->volatile_fid, &data->fi);
969 #ifdef CONFIG_CIFS_XATTR
971 move_smb2_ea_to_cifs(char *dst, size_t dst_size,
972 struct smb2_file_full_ea_info *src, size_t src_size,
973 const unsigned char *ea_name)
976 unsigned int ea_name_len = ea_name ? strlen(ea_name) : 0;
978 size_t buf_size = dst_size;
979 size_t name_len, value_len, user_name_len;
981 while (src_size > 0) {
982 name_len = (size_t)src->ea_name_length;
983 value_len = (size_t)le16_to_cpu(src->ea_value_length);
988 if (src_size < 8 + name_len + 1 + value_len) {
989 cifs_dbg(FYI, "EA entry goes beyond length of list\n");
994 name = &src->ea_data[0];
995 value = &src->ea_data[src->ea_name_length + 1];
998 if (ea_name_len == name_len &&
999 memcmp(ea_name, name, name_len) == 0) {
1003 if (dst_size < value_len) {
1007 memcpy(dst, value, value_len);
1011 /* 'user.' plus a terminating null */
1012 user_name_len = 5 + 1 + name_len;
1014 if (buf_size == 0) {
1015 /* skip copy - calc size only */
1016 rc += user_name_len;
1017 } else if (dst_size >= user_name_len) {
1018 dst_size -= user_name_len;
1019 memcpy(dst, "user.", 5);
1021 memcpy(dst, src->ea_data, name_len);
1025 rc += user_name_len;
1027 /* stop before overrun buffer */
1033 if (!src->next_entry_offset)
1036 if (src_size < le32_to_cpu(src->next_entry_offset)) {
1037 /* stop before overrun buffer */
1041 src_size -= le32_to_cpu(src->next_entry_offset);
1042 src = (void *)((char *)src +
1043 le32_to_cpu(src->next_entry_offset));
1046 /* didn't find the named attribute */
1055 smb2_query_eas(const unsigned int xid, struct cifs_tcon *tcon,
1056 const unsigned char *path, const unsigned char *ea_name,
1057 char *ea_data, size_t buf_size,
1058 struct cifs_sb_info *cifs_sb)
1061 struct kvec rsp_iov = {NULL, 0};
1062 int buftype = CIFS_NO_BUFFER;
1063 struct smb2_query_info_rsp *rsp;
1064 struct smb2_file_full_ea_info *info = NULL;
1066 rc = smb2_query_info_compound(xid, tcon, path,
1068 FILE_FULL_EA_INFORMATION,
1071 MAX_SMB2_CREATE_RESPONSE_SIZE -
1072 MAX_SMB2_CLOSE_RESPONSE_SIZE,
1073 &rsp_iov, &buftype, cifs_sb);
1076 * If ea_name is NULL (listxattr) and there are no EAs,
1077 * return 0 as it's not an error. Otherwise, the specified
1078 * ea_name was not found.
1080 if (!ea_name && rc == -ENODATA)
1085 rsp = (struct smb2_query_info_rsp *)rsp_iov.iov_base;
1086 rc = smb2_validate_iov(le16_to_cpu(rsp->OutputBufferOffset),
1087 le32_to_cpu(rsp->OutputBufferLength),
1089 sizeof(struct smb2_file_full_ea_info));
1093 info = (struct smb2_file_full_ea_info *)(
1094 le16_to_cpu(rsp->OutputBufferOffset) + (char *)rsp);
1095 rc = move_smb2_ea_to_cifs(ea_data, buf_size, info,
1096 le32_to_cpu(rsp->OutputBufferLength), ea_name);
1099 free_rsp_buf(buftype, rsp_iov.iov_base);
1104 smb2_set_ea(const unsigned int xid, struct cifs_tcon *tcon,
1105 const char *path, const char *ea_name, const void *ea_value,
1106 const __u16 ea_value_len, const struct nls_table *nls_codepage,
1107 struct cifs_sb_info *cifs_sb)
1109 struct smb2_compound_vars *vars;
1110 struct cifs_ses *ses = tcon->ses;
1111 struct TCP_Server_Info *server;
1112 struct smb_rqst *rqst;
1113 struct kvec *rsp_iov;
1114 __le16 *utf16_path = NULL;
1115 int ea_name_len = strlen(ea_name);
1116 int flags = CIFS_CP_CREATE_CLOSE_OP;
1118 int resp_buftype[3];
1119 struct cifs_open_parms oparms;
1120 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
1121 struct cifs_fid fid;
1122 unsigned int size[1];
1124 struct smb2_file_full_ea_info *ea = NULL;
1125 struct smb2_query_info_rsp *rsp;
1126 int rc, used_len = 0;
1127 int retries = 0, cur_sleep = 1;
1130 /* reinitialize for possible replay */
1131 flags = CIFS_CP_CREATE_CLOSE_OP;
1132 oplock = SMB2_OPLOCK_LEVEL_NONE;
1133 server = cifs_pick_channel(ses);
1135 if (smb3_encryption_required(tcon))
1136 flags |= CIFS_TRANSFORM_REQ;
1138 if (ea_name_len > 255)
1141 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
1145 resp_buftype[0] = resp_buftype[1] = resp_buftype[2] = CIFS_NO_BUFFER;
1146 vars = kzalloc(sizeof(*vars), GFP_KERNEL);
1152 rsp_iov = vars->rsp_iov;
1154 if (ses->server->ops->query_all_EAs) {
1156 rc = ses->server->ops->query_all_EAs(xid, tcon, path,
1162 /* If we are adding a attribute we should first check
1163 * if there will be enough space available to store
1164 * the new EA. If not we should not add it since we
1165 * would not be able to even read the EAs back.
1167 rc = smb2_query_info_compound(xid, tcon, path,
1169 FILE_FULL_EA_INFORMATION,
1172 MAX_SMB2_CREATE_RESPONSE_SIZE -
1173 MAX_SMB2_CLOSE_RESPONSE_SIZE,
1174 &rsp_iov[1], &resp_buftype[1], cifs_sb);
1176 rsp = (struct smb2_query_info_rsp *)rsp_iov[1].iov_base;
1177 used_len = le32_to_cpu(rsp->OutputBufferLength);
1179 free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base);
1180 resp_buftype[1] = CIFS_NO_BUFFER;
1181 memset(&rsp_iov[1], 0, sizeof(rsp_iov[1]));
1184 /* Use a fudge factor of 256 bytes in case we collide
1185 * with a different set_EAs command.
1187 if (CIFSMaxBufSize - MAX_SMB2_CREATE_RESPONSE_SIZE -
1188 MAX_SMB2_CLOSE_RESPONSE_SIZE - 256 <
1189 used_len + ea_name_len + ea_value_len + 1) {
1197 rqst[0].rq_iov = vars->open_iov;
1198 rqst[0].rq_nvec = SMB2_CREATE_IOV_SIZE;
1200 oparms = (struct cifs_open_parms) {
1203 .desired_access = FILE_WRITE_EA,
1204 .disposition = FILE_OPEN,
1205 .create_options = cifs_create_options(cifs_sb, 0),
1207 .replay = !!(retries),
1210 rc = SMB2_open_init(tcon, server,
1211 &rqst[0], &oplock, &oparms, utf16_path);
1214 smb2_set_next_command(tcon, &rqst[0]);
1218 rqst[1].rq_iov = vars->si_iov;
1219 rqst[1].rq_nvec = 1;
1221 len = sizeof(*ea) + ea_name_len + ea_value_len + 1;
1222 ea = kzalloc(len, GFP_KERNEL);
1228 ea->ea_name_length = ea_name_len;
1229 ea->ea_value_length = cpu_to_le16(ea_value_len);
1230 memcpy(ea->ea_data, ea_name, ea_name_len + 1);
1231 memcpy(ea->ea_data + ea_name_len + 1, ea_value, ea_value_len);
1236 rc = SMB2_set_info_init(tcon, server,
1237 &rqst[1], COMPOUND_FID,
1238 COMPOUND_FID, current->tgid,
1239 FILE_FULL_EA_INFORMATION,
1240 SMB2_O_INFO_FILE, 0, data, size);
1243 smb2_set_next_command(tcon, &rqst[1]);
1244 smb2_set_related(&rqst[1]);
1247 rqst[2].rq_iov = &vars->close_iov;
1248 rqst[2].rq_nvec = 1;
1249 rc = SMB2_close_init(tcon, server,
1250 &rqst[2], COMPOUND_FID, COMPOUND_FID, false);
1253 smb2_set_related(&rqst[2]);
1256 smb2_set_replay(server, &rqst[0]);
1257 smb2_set_replay(server, &rqst[1]);
1258 smb2_set_replay(server, &rqst[2]);
1261 rc = compound_send_recv(xid, ses, server,
1263 resp_buftype, rsp_iov);
1264 /* no need to bump num_remote_opens because handle immediately closed */
1268 SMB2_open_free(&rqst[0]);
1269 SMB2_set_info_free(&rqst[1]);
1270 SMB2_close_free(&rqst[2]);
1271 free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base);
1272 free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base);
1273 free_rsp_buf(resp_buftype[2], rsp_iov[2].iov_base);
1278 if (is_replayable_error(rc) &&
1279 smb2_should_replay(tcon, &retries, &cur_sleep))
1287 smb2_can_echo(struct TCP_Server_Info *server)
1289 return server->echoes;
1293 smb2_clear_stats(struct cifs_tcon *tcon)
1297 for (i = 0; i < NUMBER_OF_SMB2_COMMANDS; i++) {
1298 atomic_set(&tcon->stats.smb2_stats.smb2_com_sent[i], 0);
1299 atomic_set(&tcon->stats.smb2_stats.smb2_com_failed[i], 0);
1304 smb2_dump_share_caps(struct seq_file *m, struct cifs_tcon *tcon)
1306 seq_puts(m, "\n\tShare Capabilities:");
1307 if (tcon->capabilities & SMB2_SHARE_CAP_DFS)
1308 seq_puts(m, " DFS,");
1309 if (tcon->capabilities & SMB2_SHARE_CAP_CONTINUOUS_AVAILABILITY)
1310 seq_puts(m, " CONTINUOUS AVAILABILITY,");
1311 if (tcon->capabilities & SMB2_SHARE_CAP_SCALEOUT)
1312 seq_puts(m, " SCALEOUT,");
1313 if (tcon->capabilities & SMB2_SHARE_CAP_CLUSTER)
1314 seq_puts(m, " CLUSTER,");
1315 if (tcon->capabilities & SMB2_SHARE_CAP_ASYMMETRIC)
1316 seq_puts(m, " ASYMMETRIC,");
1317 if (tcon->capabilities == 0)
1318 seq_puts(m, " None");
1319 if (tcon->ss_flags & SSINFO_FLAGS_ALIGNED_DEVICE)
1320 seq_puts(m, " Aligned,");
1321 if (tcon->ss_flags & SSINFO_FLAGS_PARTITION_ALIGNED_ON_DEVICE)
1322 seq_puts(m, " Partition Aligned,");
1323 if (tcon->ss_flags & SSINFO_FLAGS_NO_SEEK_PENALTY)
1324 seq_puts(m, " SSD,");
1325 if (tcon->ss_flags & SSINFO_FLAGS_TRIM_ENABLED)
1326 seq_puts(m, " TRIM-support,");
1328 seq_printf(m, "\tShare Flags: 0x%x", tcon->share_flags);
1329 seq_printf(m, "\n\ttid: 0x%x", tcon->tid);
1330 if (tcon->perf_sector_size)
1331 seq_printf(m, "\tOptimal sector size: 0x%x",
1332 tcon->perf_sector_size);
1333 seq_printf(m, "\tMaximal Access: 0x%x", tcon->maximal_access);
1337 smb2_print_stats(struct seq_file *m, struct cifs_tcon *tcon)
1339 atomic_t *sent = tcon->stats.smb2_stats.smb2_com_sent;
1340 atomic_t *failed = tcon->stats.smb2_stats.smb2_com_failed;
1343 * Can't display SMB2_NEGOTIATE, SESSION_SETUP, LOGOFF, CANCEL and ECHO
1344 * totals (requests sent) since those SMBs are per-session not per tcon
1346 seq_printf(m, "\nBytes read: %llu Bytes written: %llu",
1347 (long long)(tcon->bytes_read),
1348 (long long)(tcon->bytes_written));
1349 seq_printf(m, "\nOpen files: %d total (local), %d open on server",
1350 atomic_read(&tcon->num_local_opens),
1351 atomic_read(&tcon->num_remote_opens));
1352 seq_printf(m, "\nTreeConnects: %d total %d failed",
1353 atomic_read(&sent[SMB2_TREE_CONNECT_HE]),
1354 atomic_read(&failed[SMB2_TREE_CONNECT_HE]));
1355 seq_printf(m, "\nTreeDisconnects: %d total %d failed",
1356 atomic_read(&sent[SMB2_TREE_DISCONNECT_HE]),
1357 atomic_read(&failed[SMB2_TREE_DISCONNECT_HE]));
1358 seq_printf(m, "\nCreates: %d total %d failed",
1359 atomic_read(&sent[SMB2_CREATE_HE]),
1360 atomic_read(&failed[SMB2_CREATE_HE]));
1361 seq_printf(m, "\nCloses: %d total %d failed",
1362 atomic_read(&sent[SMB2_CLOSE_HE]),
1363 atomic_read(&failed[SMB2_CLOSE_HE]));
1364 seq_printf(m, "\nFlushes: %d total %d failed",
1365 atomic_read(&sent[SMB2_FLUSH_HE]),
1366 atomic_read(&failed[SMB2_FLUSH_HE]));
1367 seq_printf(m, "\nReads: %d total %d failed",
1368 atomic_read(&sent[SMB2_READ_HE]),
1369 atomic_read(&failed[SMB2_READ_HE]));
1370 seq_printf(m, "\nWrites: %d total %d failed",
1371 atomic_read(&sent[SMB2_WRITE_HE]),
1372 atomic_read(&failed[SMB2_WRITE_HE]));
1373 seq_printf(m, "\nLocks: %d total %d failed",
1374 atomic_read(&sent[SMB2_LOCK_HE]),
1375 atomic_read(&failed[SMB2_LOCK_HE]));
1376 seq_printf(m, "\nIOCTLs: %d total %d failed",
1377 atomic_read(&sent[SMB2_IOCTL_HE]),
1378 atomic_read(&failed[SMB2_IOCTL_HE]));
1379 seq_printf(m, "\nQueryDirectories: %d total %d failed",
1380 atomic_read(&sent[SMB2_QUERY_DIRECTORY_HE]),
1381 atomic_read(&failed[SMB2_QUERY_DIRECTORY_HE]));
1382 seq_printf(m, "\nChangeNotifies: %d total %d failed",
1383 atomic_read(&sent[SMB2_CHANGE_NOTIFY_HE]),
1384 atomic_read(&failed[SMB2_CHANGE_NOTIFY_HE]));
1385 seq_printf(m, "\nQueryInfos: %d total %d failed",
1386 atomic_read(&sent[SMB2_QUERY_INFO_HE]),
1387 atomic_read(&failed[SMB2_QUERY_INFO_HE]));
1388 seq_printf(m, "\nSetInfos: %d total %d failed",
1389 atomic_read(&sent[SMB2_SET_INFO_HE]),
1390 atomic_read(&failed[SMB2_SET_INFO_HE]));
1391 seq_printf(m, "\nOplockBreaks: %d sent %d failed",
1392 atomic_read(&sent[SMB2_OPLOCK_BREAK_HE]),
1393 atomic_read(&failed[SMB2_OPLOCK_BREAK_HE]));
1397 smb2_set_fid(struct cifsFileInfo *cfile, struct cifs_fid *fid, __u32 oplock)
1399 struct cifsInodeInfo *cinode = CIFS_I(d_inode(cfile->dentry));
1400 struct TCP_Server_Info *server = tlink_tcon(cfile->tlink)->ses->server;
1402 cfile->fid.persistent_fid = fid->persistent_fid;
1403 cfile->fid.volatile_fid = fid->volatile_fid;
1404 cfile->fid.access = fid->access;
1405 #ifdef CONFIG_CIFS_DEBUG2
1406 cfile->fid.mid = fid->mid;
1407 #endif /* CIFS_DEBUG2 */
1408 server->ops->set_oplock_level(cinode, oplock, fid->epoch,
1410 cinode->can_cache_brlcks = CIFS_CACHE_WRITE(cinode);
1411 memcpy(cfile->fid.create_guid, fid->create_guid, 16);
1415 smb2_close_file(const unsigned int xid, struct cifs_tcon *tcon,
1416 struct cifs_fid *fid)
1418 return SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
1422 smb2_close_getattr(const unsigned int xid, struct cifs_tcon *tcon,
1423 struct cifsFileInfo *cfile)
1425 struct smb2_file_network_open_info file_inf;
1426 struct inode *inode;
1429 rc = __SMB2_close(xid, tcon, cfile->fid.persistent_fid,
1430 cfile->fid.volatile_fid, &file_inf);
1434 inode = d_inode(cfile->dentry);
1436 spin_lock(&inode->i_lock);
1437 CIFS_I(inode)->time = jiffies;
1439 /* Creation time should not need to be updated on close */
1440 if (file_inf.LastWriteTime)
1441 inode_set_mtime_to_ts(inode,
1442 cifs_NTtimeToUnix(file_inf.LastWriteTime));
1443 if (file_inf.ChangeTime)
1444 inode_set_ctime_to_ts(inode,
1445 cifs_NTtimeToUnix(file_inf.ChangeTime));
1446 if (file_inf.LastAccessTime)
1447 inode_set_atime_to_ts(inode,
1448 cifs_NTtimeToUnix(file_inf.LastAccessTime));
1451 * i_blocks is not related to (i_size / i_blksize),
1452 * but instead 512 byte (2**9) size is required for
1453 * calculating num blocks.
1455 if (le64_to_cpu(file_inf.AllocationSize) > 4096)
1457 (512 - 1 + le64_to_cpu(file_inf.AllocationSize)) >> 9;
1459 /* End of file and Attributes should not have to be updated on close */
1460 spin_unlock(&inode->i_lock);
1465 SMB2_request_res_key(const unsigned int xid, struct cifs_tcon *tcon,
1466 u64 persistent_fid, u64 volatile_fid,
1467 struct copychunk_ioctl *pcchunk)
1470 unsigned int ret_data_len;
1471 struct resume_key_req *res_key;
1473 rc = SMB2_ioctl(xid, tcon, persistent_fid, volatile_fid,
1474 FSCTL_SRV_REQUEST_RESUME_KEY, NULL, 0 /* no input */,
1475 CIFSMaxBufSize, (char **)&res_key, &ret_data_len);
1477 if (rc == -EOPNOTSUPP) {
1478 pr_warn_once("Server share %s does not support copy range\n", tcon->tree_name);
1479 goto req_res_key_exit;
1481 cifs_tcon_dbg(VFS, "refcpy ioctl error %d getting resume key\n", rc);
1482 goto req_res_key_exit;
1484 if (ret_data_len < sizeof(struct resume_key_req)) {
1485 cifs_tcon_dbg(VFS, "Invalid refcopy resume key length\n");
1487 goto req_res_key_exit;
1489 memcpy(pcchunk->SourceKey, res_key->ResumeKey, COPY_CHUNK_RES_KEY_SIZE);
1497 smb2_ioctl_query_info(const unsigned int xid,
1498 struct cifs_tcon *tcon,
1499 struct cifs_sb_info *cifs_sb,
1500 __le16 *path, int is_dir,
1503 struct smb2_compound_vars *vars;
1504 struct smb_rqst *rqst;
1505 struct kvec *rsp_iov;
1506 struct cifs_ses *ses = tcon->ses;
1507 struct TCP_Server_Info *server;
1508 char __user *arg = (char __user *)p;
1509 struct smb_query_info qi;
1510 struct smb_query_info __user *pqi;
1512 int flags = CIFS_CP_CREATE_CLOSE_OP;
1513 struct smb2_query_info_rsp *qi_rsp = NULL;
1514 struct smb2_ioctl_rsp *io_rsp = NULL;
1515 void *buffer = NULL;
1516 int resp_buftype[3];
1517 struct cifs_open_parms oparms;
1518 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
1519 struct cifs_fid fid;
1520 unsigned int size[2];
1522 int create_options = is_dir ? CREATE_NOT_FILE : CREATE_NOT_DIR;
1523 void (*free_req1_func)(struct smb_rqst *r);
1524 int retries = 0, cur_sleep = 1;
1527 /* reinitialize for possible replay */
1528 flags = CIFS_CP_CREATE_CLOSE_OP;
1529 oplock = SMB2_OPLOCK_LEVEL_NONE;
1530 server = cifs_pick_channel(ses);
1532 vars = kzalloc(sizeof(*vars), GFP_ATOMIC);
1535 rqst = &vars->rqst[0];
1536 rsp_iov = &vars->rsp_iov[0];
1538 resp_buftype[0] = resp_buftype[1] = resp_buftype[2] = CIFS_NO_BUFFER;
1540 if (copy_from_user(&qi, arg, sizeof(struct smb_query_info))) {
1544 if (qi.output_buffer_length > 1024) {
1549 if (!ses || !server) {
1554 if (smb3_encryption_required(tcon))
1555 flags |= CIFS_TRANSFORM_REQ;
1557 if (qi.output_buffer_length) {
1558 buffer = memdup_user(arg + sizeof(struct smb_query_info), qi.output_buffer_length);
1559 if (IS_ERR(buffer)) {
1560 rc = PTR_ERR(buffer);
1566 rqst[0].rq_iov = &vars->open_iov[0];
1567 rqst[0].rq_nvec = SMB2_CREATE_IOV_SIZE;
1569 oparms = (struct cifs_open_parms) {
1571 .disposition = FILE_OPEN,
1572 .create_options = cifs_create_options(cifs_sb, create_options),
1574 .replay = !!(retries),
1577 if (qi.flags & PASSTHRU_FSCTL) {
1578 switch (qi.info_type & FSCTL_DEVICE_ACCESS_MASK) {
1579 case FSCTL_DEVICE_ACCESS_FILE_READ_WRITE_ACCESS:
1580 oparms.desired_access = FILE_READ_DATA | FILE_WRITE_DATA | FILE_READ_ATTRIBUTES | SYNCHRONIZE;
1582 case FSCTL_DEVICE_ACCESS_FILE_ANY_ACCESS:
1583 oparms.desired_access = GENERIC_ALL;
1585 case FSCTL_DEVICE_ACCESS_FILE_READ_ACCESS:
1586 oparms.desired_access = GENERIC_READ;
1588 case FSCTL_DEVICE_ACCESS_FILE_WRITE_ACCESS:
1589 oparms.desired_access = GENERIC_WRITE;
1592 } else if (qi.flags & PASSTHRU_SET_INFO) {
1593 oparms.desired_access = GENERIC_WRITE;
1595 oparms.desired_access = FILE_READ_ATTRIBUTES | READ_CONTROL;
1598 rc = SMB2_open_init(tcon, server,
1599 &rqst[0], &oplock, &oparms, path);
1601 goto free_output_buffer;
1602 smb2_set_next_command(tcon, &rqst[0]);
1605 if (qi.flags & PASSTHRU_FSCTL) {
1606 /* Can eventually relax perm check since server enforces too */
1607 if (!capable(CAP_SYS_ADMIN)) {
1611 rqst[1].rq_iov = &vars->io_iov[0];
1612 rqst[1].rq_nvec = SMB2_IOCTL_IOV_SIZE;
1614 rc = SMB2_ioctl_init(tcon, server, &rqst[1], COMPOUND_FID, COMPOUND_FID,
1615 qi.info_type, buffer, qi.output_buffer_length,
1616 CIFSMaxBufSize - MAX_SMB2_CREATE_RESPONSE_SIZE -
1617 MAX_SMB2_CLOSE_RESPONSE_SIZE);
1618 free_req1_func = SMB2_ioctl_free;
1619 } else if (qi.flags == PASSTHRU_SET_INFO) {
1620 /* Can eventually relax perm check since server enforces too */
1621 if (!capable(CAP_SYS_ADMIN)) {
1625 if (qi.output_buffer_length < 8) {
1629 rqst[1].rq_iov = vars->si_iov;
1630 rqst[1].rq_nvec = 1;
1632 /* MS-FSCC 2.4.13 FileEndOfFileInformation */
1636 rc = SMB2_set_info_init(tcon, server, &rqst[1], COMPOUND_FID, COMPOUND_FID,
1637 current->tgid, FILE_END_OF_FILE_INFORMATION,
1638 SMB2_O_INFO_FILE, 0, data, size);
1639 free_req1_func = SMB2_set_info_free;
1640 } else if (qi.flags == PASSTHRU_QUERY_INFO) {
1641 rqst[1].rq_iov = &vars->qi_iov;
1642 rqst[1].rq_nvec = 1;
1644 rc = SMB2_query_info_init(tcon, server,
1645 &rqst[1], COMPOUND_FID,
1646 COMPOUND_FID, qi.file_info_class,
1647 qi.info_type, qi.additional_information,
1648 qi.input_buffer_length,
1649 qi.output_buffer_length, buffer);
1650 free_req1_func = SMB2_query_info_free;
1651 } else { /* unknown flags */
1652 cifs_tcon_dbg(VFS, "Invalid passthru query flags: 0x%x\n",
1659 smb2_set_next_command(tcon, &rqst[1]);
1660 smb2_set_related(&rqst[1]);
1663 rqst[2].rq_iov = &vars->close_iov;
1664 rqst[2].rq_nvec = 1;
1666 rc = SMB2_close_init(tcon, server,
1667 &rqst[2], COMPOUND_FID, COMPOUND_FID, false);
1670 smb2_set_related(&rqst[2]);
1673 smb2_set_replay(server, &rqst[0]);
1674 smb2_set_replay(server, &rqst[1]);
1675 smb2_set_replay(server, &rqst[2]);
1678 rc = compound_send_recv(xid, ses, server,
1680 resp_buftype, rsp_iov);
1684 /* No need to bump num_remote_opens since handle immediately closed */
1685 if (qi.flags & PASSTHRU_FSCTL) {
1686 pqi = (struct smb_query_info __user *)arg;
1687 io_rsp = (struct smb2_ioctl_rsp *)rsp_iov[1].iov_base;
1688 if (le32_to_cpu(io_rsp->OutputCount) < qi.input_buffer_length)
1689 qi.input_buffer_length = le32_to_cpu(io_rsp->OutputCount);
1690 if (qi.input_buffer_length > 0 &&
1691 le32_to_cpu(io_rsp->OutputOffset) + qi.input_buffer_length
1692 > rsp_iov[1].iov_len) {
1697 if (copy_to_user(&pqi->input_buffer_length,
1698 &qi.input_buffer_length,
1699 sizeof(qi.input_buffer_length))) {
1704 if (copy_to_user((void __user *)pqi + sizeof(struct smb_query_info),
1705 (const void *)io_rsp + le32_to_cpu(io_rsp->OutputOffset),
1706 qi.input_buffer_length))
1709 pqi = (struct smb_query_info __user *)arg;
1710 qi_rsp = (struct smb2_query_info_rsp *)rsp_iov[1].iov_base;
1711 if (le32_to_cpu(qi_rsp->OutputBufferLength) < qi.input_buffer_length)
1712 qi.input_buffer_length = le32_to_cpu(qi_rsp->OutputBufferLength);
1713 if (copy_to_user(&pqi->input_buffer_length,
1714 &qi.input_buffer_length,
1715 sizeof(qi.input_buffer_length))) {
1720 if (copy_to_user(pqi + 1, qi_rsp->Buffer,
1721 qi.input_buffer_length))
1726 free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base);
1727 free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base);
1728 free_rsp_buf(resp_buftype[2], rsp_iov[2].iov_base);
1729 SMB2_close_free(&rqst[2]);
1731 free_req1_func(&rqst[1]);
1733 SMB2_open_free(&rqst[0]);
1739 if (is_replayable_error(rc) &&
1740 smb2_should_replay(tcon, &retries, &cur_sleep))
1747 smb2_copychunk_range(const unsigned int xid,
1748 struct cifsFileInfo *srcfile,
1749 struct cifsFileInfo *trgtfile, u64 src_off,
1750 u64 len, u64 dest_off)
1753 unsigned int ret_data_len;
1754 struct copychunk_ioctl *pcchunk;
1755 struct copychunk_ioctl_rsp *retbuf = NULL;
1756 struct cifs_tcon *tcon;
1757 int chunks_copied = 0;
1758 bool chunk_sizes_updated = false;
1759 ssize_t bytes_written, total_bytes_written = 0;
1761 pcchunk = kmalloc(sizeof(struct copychunk_ioctl), GFP_KERNEL);
1762 if (pcchunk == NULL)
1765 cifs_dbg(FYI, "%s: about to call request res key\n", __func__);
1766 /* Request a key from the server to identify the source of the copy */
1767 rc = SMB2_request_res_key(xid, tlink_tcon(srcfile->tlink),
1768 srcfile->fid.persistent_fid,
1769 srcfile->fid.volatile_fid, pcchunk);
1771 /* Note: request_res_key sets res_key null only if rc !=0 */
1775 /* For now array only one chunk long, will make more flexible later */
1776 pcchunk->ChunkCount = cpu_to_le32(1);
1777 pcchunk->Reserved = 0;
1778 pcchunk->Reserved2 = 0;
1780 tcon = tlink_tcon(trgtfile->tlink);
1783 pcchunk->SourceOffset = cpu_to_le64(src_off);
1784 pcchunk->TargetOffset = cpu_to_le64(dest_off);
1786 cpu_to_le32(min_t(u64, len, tcon->max_bytes_chunk));
1788 /* Request server copy to target from src identified by key */
1791 rc = SMB2_ioctl(xid, tcon, trgtfile->fid.persistent_fid,
1792 trgtfile->fid.volatile_fid, FSCTL_SRV_COPYCHUNK_WRITE,
1793 (char *)pcchunk, sizeof(struct copychunk_ioctl),
1794 CIFSMaxBufSize, (char **)&retbuf, &ret_data_len);
1797 sizeof(struct copychunk_ioctl_rsp)) {
1798 cifs_tcon_dbg(VFS, "Invalid cchunk response size\n");
1802 if (retbuf->TotalBytesWritten == 0) {
1803 cifs_dbg(FYI, "no bytes copied\n");
1808 * Check if server claimed to write more than we asked
1810 if (le32_to_cpu(retbuf->TotalBytesWritten) >
1811 le32_to_cpu(pcchunk->Length)) {
1812 cifs_tcon_dbg(VFS, "Invalid copy chunk response\n");
1816 if (le32_to_cpu(retbuf->ChunksWritten) != 1) {
1817 cifs_tcon_dbg(VFS, "Invalid num chunks written\n");
1823 bytes_written = le32_to_cpu(retbuf->TotalBytesWritten);
1824 src_off += bytes_written;
1825 dest_off += bytes_written;
1826 len -= bytes_written;
1827 total_bytes_written += bytes_written;
1829 cifs_dbg(FYI, "Chunks %d PartialChunk %d Total %zu\n",
1830 le32_to_cpu(retbuf->ChunksWritten),
1831 le32_to_cpu(retbuf->ChunkBytesWritten),
1833 } else if (rc == -EINVAL) {
1834 if (ret_data_len != sizeof(struct copychunk_ioctl_rsp))
1837 cifs_dbg(FYI, "MaxChunks %d BytesChunk %d MaxCopy %d\n",
1838 le32_to_cpu(retbuf->ChunksWritten),
1839 le32_to_cpu(retbuf->ChunkBytesWritten),
1840 le32_to_cpu(retbuf->TotalBytesWritten));
1843 * Check if this is the first request using these sizes,
1844 * (ie check if copy succeed once with original sizes
1845 * and check if the server gave us different sizes after
1846 * we already updated max sizes on previous request).
1847 * if not then why is the server returning an error now
1849 if ((chunks_copied != 0) || chunk_sizes_updated)
1852 /* Check that server is not asking us to grow size */
1853 if (le32_to_cpu(retbuf->ChunkBytesWritten) <
1854 tcon->max_bytes_chunk)
1855 tcon->max_bytes_chunk =
1856 le32_to_cpu(retbuf->ChunkBytesWritten);
1858 goto cchunk_out; /* server gave us bogus size */
1860 /* No need to change MaxChunks since already set to 1 */
1861 chunk_sizes_updated = true;
1872 return total_bytes_written;
1876 smb2_flush_file(const unsigned int xid, struct cifs_tcon *tcon,
1877 struct cifs_fid *fid)
1879 return SMB2_flush(xid, tcon, fid->persistent_fid, fid->volatile_fid);
1883 smb2_read_data_offset(char *buf)
1885 struct smb2_read_rsp *rsp = (struct smb2_read_rsp *)buf;
1887 return rsp->DataOffset;
1891 smb2_read_data_length(char *buf, bool in_remaining)
1893 struct smb2_read_rsp *rsp = (struct smb2_read_rsp *)buf;
1896 return le32_to_cpu(rsp->DataRemaining);
1898 return le32_to_cpu(rsp->DataLength);
1903 smb2_sync_read(const unsigned int xid, struct cifs_fid *pfid,
1904 struct cifs_io_parms *parms, unsigned int *bytes_read,
1905 char **buf, int *buf_type)
1907 parms->persistent_fid = pfid->persistent_fid;
1908 parms->volatile_fid = pfid->volatile_fid;
1909 return SMB2_read(xid, parms, bytes_read, buf, buf_type);
1913 smb2_sync_write(const unsigned int xid, struct cifs_fid *pfid,
1914 struct cifs_io_parms *parms, unsigned int *written,
1915 struct kvec *iov, unsigned long nr_segs)
1918 parms->persistent_fid = pfid->persistent_fid;
1919 parms->volatile_fid = pfid->volatile_fid;
1920 return SMB2_write(xid, parms, written, iov, nr_segs);
1923 /* Set or clear the SPARSE_FILE attribute based on value passed in setsparse */
1924 static bool smb2_set_sparse(const unsigned int xid, struct cifs_tcon *tcon,
1925 struct cifsFileInfo *cfile, struct inode *inode, __u8 setsparse)
1927 struct cifsInodeInfo *cifsi;
1930 cifsi = CIFS_I(inode);
1932 /* if file already sparse don't bother setting sparse again */
1933 if ((cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) && setsparse)
1934 return true; /* already sparse */
1936 if (!(cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) && !setsparse)
1937 return true; /* already not sparse */
1940 * Can't check for sparse support on share the usual way via the
1941 * FS attribute info (FILE_SUPPORTS_SPARSE_FILES) on the share
1942 * since Samba server doesn't set the flag on the share, yet
1943 * supports the set sparse FSCTL and returns sparse correctly
1944 * in the file attributes. If we fail setting sparse though we
1945 * mark that server does not support sparse files for this share
1946 * to avoid repeatedly sending the unsupported fsctl to server
1947 * if the file is repeatedly extended.
1949 if (tcon->broken_sparse_sup)
1952 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
1953 cfile->fid.volatile_fid, FSCTL_SET_SPARSE,
1954 &setsparse, 1, CIFSMaxBufSize, NULL, NULL);
1956 tcon->broken_sparse_sup = true;
1957 cifs_dbg(FYI, "set sparse rc = %d\n", rc);
1962 cifsi->cifsAttrs |= FILE_ATTRIBUTE_SPARSE_FILE;
1964 cifsi->cifsAttrs &= (~FILE_ATTRIBUTE_SPARSE_FILE);
1970 smb2_set_file_size(const unsigned int xid, struct cifs_tcon *tcon,
1971 struct cifsFileInfo *cfile, __u64 size, bool set_alloc)
1973 struct inode *inode;
1976 * If extending file more than one page make sparse. Many Linux fs
1977 * make files sparse by default when extending via ftruncate
1979 inode = d_inode(cfile->dentry);
1981 if (!set_alloc && (size > inode->i_size + 8192)) {
1982 __u8 set_sparse = 1;
1984 /* whether set sparse succeeds or not, extend the file */
1985 smb2_set_sparse(xid, tcon, cfile, inode, set_sparse);
1988 return SMB2_set_eof(xid, tcon, cfile->fid.persistent_fid,
1989 cfile->fid.volatile_fid, cfile->pid, size);
1993 smb2_duplicate_extents(const unsigned int xid,
1994 struct cifsFileInfo *srcfile,
1995 struct cifsFileInfo *trgtfile, u64 src_off,
1996 u64 len, u64 dest_off)
1999 unsigned int ret_data_len;
2000 struct inode *inode;
2001 struct duplicate_extents_to_file dup_ext_buf;
2002 struct cifs_tcon *tcon = tlink_tcon(trgtfile->tlink);
2004 /* server fileays advertise duplicate extent support with this flag */
2005 if ((le32_to_cpu(tcon->fsAttrInfo.Attributes) &
2006 FILE_SUPPORTS_BLOCK_REFCOUNTING) == 0)
2009 dup_ext_buf.VolatileFileHandle = srcfile->fid.volatile_fid;
2010 dup_ext_buf.PersistentFileHandle = srcfile->fid.persistent_fid;
2011 dup_ext_buf.SourceFileOffset = cpu_to_le64(src_off);
2012 dup_ext_buf.TargetFileOffset = cpu_to_le64(dest_off);
2013 dup_ext_buf.ByteCount = cpu_to_le64(len);
2014 cifs_dbg(FYI, "Duplicate extents: src off %lld dst off %lld len %lld\n",
2015 src_off, dest_off, len);
2017 inode = d_inode(trgtfile->dentry);
2018 if (inode->i_size < dest_off + len) {
2019 rc = smb2_set_file_size(xid, tcon, trgtfile, dest_off + len, false);
2021 goto duplicate_extents_out;
2024 * Although also could set plausible allocation size (i_blocks)
2025 * here in addition to setting the file size, in reflink
2026 * it is likely that the target file is sparse. Its allocation
2027 * size will be queried on next revalidate, but it is important
2028 * to make sure that file's cached size is updated immediately
2030 cifs_setsize(inode, dest_off + len);
2032 rc = SMB2_ioctl(xid, tcon, trgtfile->fid.persistent_fid,
2033 trgtfile->fid.volatile_fid,
2034 FSCTL_DUPLICATE_EXTENTS_TO_FILE,
2035 (char *)&dup_ext_buf,
2036 sizeof(struct duplicate_extents_to_file),
2037 CIFSMaxBufSize, NULL,
2040 if (ret_data_len > 0)
2041 cifs_dbg(FYI, "Non-zero response length in duplicate extents\n");
2043 duplicate_extents_out:
2048 smb2_set_compression(const unsigned int xid, struct cifs_tcon *tcon,
2049 struct cifsFileInfo *cfile)
2051 return SMB2_set_compression(xid, tcon, cfile->fid.persistent_fid,
2052 cfile->fid.volatile_fid);
2056 smb3_set_integrity(const unsigned int xid, struct cifs_tcon *tcon,
2057 struct cifsFileInfo *cfile)
2059 struct fsctl_set_integrity_information_req integr_info;
2060 unsigned int ret_data_len;
2062 integr_info.ChecksumAlgorithm = cpu_to_le16(CHECKSUM_TYPE_UNCHANGED);
2063 integr_info.Flags = 0;
2064 integr_info.Reserved = 0;
2066 return SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
2067 cfile->fid.volatile_fid,
2068 FSCTL_SET_INTEGRITY_INFORMATION,
2069 (char *)&integr_info,
2070 sizeof(struct fsctl_set_integrity_information_req),
2071 CIFSMaxBufSize, NULL,
2076 /* GMT Token is @GMT-YYYY.MM.DD-HH.MM.SS Unicode which is 48 bytes + null */
2077 #define GMT_TOKEN_SIZE 50
2079 #define MIN_SNAPSHOT_ARRAY_SIZE 16 /* See MS-SMB2 section 3.3.5.15.1 */
2082 * Input buffer contains (empty) struct smb_snapshot array with size filled in
2083 * For output see struct SRV_SNAPSHOT_ARRAY in MS-SMB2 section 2.2.32.2
2086 smb3_enum_snapshots(const unsigned int xid, struct cifs_tcon *tcon,
2087 struct cifsFileInfo *cfile, void __user *ioc_buf)
2089 char *retbuf = NULL;
2090 unsigned int ret_data_len = 0;
2092 u32 max_response_size;
2093 struct smb_snapshot_array snapshot_in;
2096 * On the first query to enumerate the list of snapshots available
2097 * for this volume the buffer begins with 0 (number of snapshots
2098 * which can be returned is zero since at that point we do not know
2099 * how big the buffer needs to be). On the second query,
2100 * it (ret_data_len) is set to number of snapshots so we can
2101 * know to set the maximum response size larger (see below).
2103 if (get_user(ret_data_len, (unsigned int __user *)ioc_buf))
2107 * Note that for snapshot queries that servers like Azure expect that
2108 * the first query be minimal size (and just used to get the number/size
2109 * of previous versions) so response size must be specified as EXACTLY
2110 * sizeof(struct snapshot_array) which is 16 when rounded up to multiple
2113 if (ret_data_len == 0)
2114 max_response_size = MIN_SNAPSHOT_ARRAY_SIZE;
2116 max_response_size = CIFSMaxBufSize;
2118 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
2119 cfile->fid.volatile_fid,
2120 FSCTL_SRV_ENUMERATE_SNAPSHOTS,
2121 NULL, 0 /* no input data */, max_response_size,
2124 cifs_dbg(FYI, "enum snaphots ioctl returned %d and ret buflen is %d\n",
2129 if (ret_data_len && (ioc_buf != NULL) && (retbuf != NULL)) {
2131 if (copy_from_user(&snapshot_in, ioc_buf,
2132 sizeof(struct smb_snapshot_array))) {
2139 * Check for min size, ie not large enough to fit even one GMT
2140 * token (snapshot). On the first ioctl some users may pass in
2141 * smaller size (or zero) to simply get the size of the array
2142 * so the user space caller can allocate sufficient memory
2143 * and retry the ioctl again with larger array size sufficient
2144 * to hold all of the snapshot GMT tokens on the second try.
2146 if (snapshot_in.snapshot_array_size < GMT_TOKEN_SIZE)
2147 ret_data_len = sizeof(struct smb_snapshot_array);
2150 * We return struct SRV_SNAPSHOT_ARRAY, followed by
2151 * the snapshot array (of 50 byte GMT tokens) each
2152 * representing an available previous version of the data
2154 if (ret_data_len > (snapshot_in.snapshot_array_size +
2155 sizeof(struct smb_snapshot_array)))
2156 ret_data_len = snapshot_in.snapshot_array_size +
2157 sizeof(struct smb_snapshot_array);
2159 if (copy_to_user(ioc_buf, retbuf, ret_data_len))
2170 smb3_notify(const unsigned int xid, struct file *pfile,
2171 void __user *ioc_buf, bool return_changes)
2173 struct smb3_notify_info notify;
2174 struct smb3_notify_info __user *pnotify_buf;
2175 struct dentry *dentry = pfile->f_path.dentry;
2176 struct inode *inode = file_inode(pfile);
2177 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
2178 struct cifs_open_parms oparms;
2179 struct cifs_fid fid;
2180 struct cifs_tcon *tcon;
2181 const unsigned char *path;
2182 char *returned_ioctl_info = NULL;
2183 void *page = alloc_dentry_path();
2184 __le16 *utf16_path = NULL;
2185 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
2189 path = build_path_from_dentry(dentry, page);
2195 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
2196 if (utf16_path == NULL) {
2201 if (return_changes) {
2202 if (copy_from_user(¬ify, ioc_buf, sizeof(struct smb3_notify_info))) {
2207 if (copy_from_user(¬ify, ioc_buf, sizeof(struct smb3_notify))) {
2211 notify.data_len = 0;
2214 tcon = cifs_sb_master_tcon(cifs_sb);
2215 oparms = (struct cifs_open_parms) {
2218 .desired_access = FILE_READ_ATTRIBUTES | FILE_READ_DATA,
2219 .disposition = FILE_OPEN,
2220 .create_options = cifs_create_options(cifs_sb, 0),
2224 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL, NULL,
2229 rc = SMB2_change_notify(xid, tcon, fid.persistent_fid, fid.volatile_fid,
2230 notify.watch_tree, notify.completion_filter,
2231 notify.data_len, &returned_ioctl_info, &ret_len);
2233 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
2235 cifs_dbg(FYI, "change notify for path %s rc %d\n", path, rc);
2236 if (return_changes && (ret_len > 0) && (notify.data_len > 0)) {
2237 if (ret_len > notify.data_len)
2238 ret_len = notify.data_len;
2239 pnotify_buf = (struct smb3_notify_info __user *)ioc_buf;
2240 if (copy_to_user(pnotify_buf->notify_data, returned_ioctl_info, ret_len))
2242 else if (copy_to_user(&pnotify_buf->data_len, &ret_len, sizeof(ret_len)))
2245 kfree(returned_ioctl_info);
2247 free_dentry_path(page);
2253 smb2_query_dir_first(const unsigned int xid, struct cifs_tcon *tcon,
2254 const char *path, struct cifs_sb_info *cifs_sb,
2255 struct cifs_fid *fid, __u16 search_flags,
2256 struct cifs_search_info *srch_inf)
2259 struct smb_rqst rqst[2];
2260 struct kvec rsp_iov[2];
2261 int resp_buftype[2];
2262 struct kvec open_iov[SMB2_CREATE_IOV_SIZE];
2263 struct kvec qd_iov[SMB2_QUERY_DIRECTORY_IOV_SIZE];
2265 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
2266 struct cifs_open_parms oparms;
2267 struct smb2_query_directory_rsp *qd_rsp = NULL;
2268 struct smb2_create_rsp *op_rsp = NULL;
2269 struct TCP_Server_Info *server;
2270 int retries = 0, cur_sleep = 1;
2273 /* reinitialize for possible replay */
2275 oplock = SMB2_OPLOCK_LEVEL_NONE;
2276 server = cifs_pick_channel(tcon->ses);
2278 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
2282 if (smb3_encryption_required(tcon))
2283 flags |= CIFS_TRANSFORM_REQ;
2285 memset(rqst, 0, sizeof(rqst));
2286 resp_buftype[0] = resp_buftype[1] = CIFS_NO_BUFFER;
2287 memset(rsp_iov, 0, sizeof(rsp_iov));
2290 memset(&open_iov, 0, sizeof(open_iov));
2291 rqst[0].rq_iov = open_iov;
2292 rqst[0].rq_nvec = SMB2_CREATE_IOV_SIZE;
2294 oparms = (struct cifs_open_parms) {
2297 .desired_access = FILE_READ_ATTRIBUTES | FILE_READ_DATA,
2298 .disposition = FILE_OPEN,
2299 .create_options = cifs_create_options(cifs_sb, 0),
2301 .replay = !!(retries),
2304 rc = SMB2_open_init(tcon, server,
2305 &rqst[0], &oplock, &oparms, utf16_path);
2308 smb2_set_next_command(tcon, &rqst[0]);
2310 /* Query directory */
2311 srch_inf->entries_in_buffer = 0;
2312 srch_inf->index_of_last_entry = 2;
2314 memset(&qd_iov, 0, sizeof(qd_iov));
2315 rqst[1].rq_iov = qd_iov;
2316 rqst[1].rq_nvec = SMB2_QUERY_DIRECTORY_IOV_SIZE;
2318 rc = SMB2_query_directory_init(xid, tcon, server,
2320 COMPOUND_FID, COMPOUND_FID,
2321 0, srch_inf->info_level);
2325 smb2_set_related(&rqst[1]);
2328 smb2_set_replay(server, &rqst[0]);
2329 smb2_set_replay(server, &rqst[1]);
2332 rc = compound_send_recv(xid, tcon->ses, server,
2334 resp_buftype, rsp_iov);
2336 /* If the open failed there is nothing to do */
2337 op_rsp = (struct smb2_create_rsp *)rsp_iov[0].iov_base;
2338 if (op_rsp == NULL || op_rsp->hdr.Status != STATUS_SUCCESS) {
2339 cifs_dbg(FYI, "query_dir_first: open failed rc=%d\n", rc);
2342 fid->persistent_fid = op_rsp->PersistentFileId;
2343 fid->volatile_fid = op_rsp->VolatileFileId;
2345 /* Anything else than ENODATA means a genuine error */
2346 if (rc && rc != -ENODATA) {
2347 SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
2348 cifs_dbg(FYI, "query_dir_first: query directory failed rc=%d\n", rc);
2349 trace_smb3_query_dir_err(xid, fid->persistent_fid,
2350 tcon->tid, tcon->ses->Suid, 0, 0, rc);
2354 atomic_inc(&tcon->num_remote_opens);
2356 qd_rsp = (struct smb2_query_directory_rsp *)rsp_iov[1].iov_base;
2357 if (qd_rsp->hdr.Status == STATUS_NO_MORE_FILES) {
2358 trace_smb3_query_dir_done(xid, fid->persistent_fid,
2359 tcon->tid, tcon->ses->Suid, 0, 0);
2360 srch_inf->endOfSearch = true;
2365 rc = smb2_parse_query_directory(tcon, &rsp_iov[1], resp_buftype[1],
2368 trace_smb3_query_dir_err(xid, fid->persistent_fid, tcon->tid,
2369 tcon->ses->Suid, 0, 0, rc);
2372 resp_buftype[1] = CIFS_NO_BUFFER;
2374 trace_smb3_query_dir_done(xid, fid->persistent_fid, tcon->tid,
2375 tcon->ses->Suid, 0, srch_inf->entries_in_buffer);
2379 SMB2_open_free(&rqst[0]);
2380 SMB2_query_directory_free(&rqst[1]);
2381 free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base);
2382 free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base);
2384 if (is_replayable_error(rc) &&
2385 smb2_should_replay(tcon, &retries, &cur_sleep))
2392 smb2_query_dir_next(const unsigned int xid, struct cifs_tcon *tcon,
2393 struct cifs_fid *fid, __u16 search_flags,
2394 struct cifs_search_info *srch_inf)
2396 return SMB2_query_directory(xid, tcon, fid->persistent_fid,
2397 fid->volatile_fid, 0, srch_inf);
2401 smb2_close_dir(const unsigned int xid, struct cifs_tcon *tcon,
2402 struct cifs_fid *fid)
2404 return SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
2408 * If we negotiate SMB2 protocol and get STATUS_PENDING - update
2409 * the number of credits and return true. Otherwise - return false.
2412 smb2_is_status_pending(char *buf, struct TCP_Server_Info *server)
2414 struct smb2_hdr *shdr = (struct smb2_hdr *)buf;
2415 int scredits, in_flight;
2417 if (shdr->Status != STATUS_PENDING)
2420 if (shdr->CreditRequest) {
2421 spin_lock(&server->req_lock);
2422 server->credits += le16_to_cpu(shdr->CreditRequest);
2423 scredits = server->credits;
2424 in_flight = server->in_flight;
2425 spin_unlock(&server->req_lock);
2426 wake_up(&server->request_q);
2428 trace_smb3_pend_credits(server->CurrentMid,
2429 server->conn_id, server->hostname, scredits,
2430 le16_to_cpu(shdr->CreditRequest), in_flight);
2431 cifs_dbg(FYI, "%s: status pending add %u credits total=%d\n",
2432 __func__, le16_to_cpu(shdr->CreditRequest), scredits);
2439 smb2_is_session_expired(char *buf)
2441 struct smb2_hdr *shdr = (struct smb2_hdr *)buf;
2443 if (shdr->Status != STATUS_NETWORK_SESSION_EXPIRED &&
2444 shdr->Status != STATUS_USER_SESSION_DELETED)
2447 trace_smb3_ses_expired(le32_to_cpu(shdr->Id.SyncId.TreeId),
2448 le64_to_cpu(shdr->SessionId),
2449 le16_to_cpu(shdr->Command),
2450 le64_to_cpu(shdr->MessageId));
2451 cifs_dbg(FYI, "Session expired or deleted\n");
2457 smb2_is_status_io_timeout(char *buf)
2459 struct smb2_hdr *shdr = (struct smb2_hdr *)buf;
2461 if (shdr->Status == STATUS_IO_TIMEOUT)
2468 smb2_is_network_name_deleted(char *buf, struct TCP_Server_Info *server)
2470 struct smb2_hdr *shdr = (struct smb2_hdr *)buf;
2471 struct TCP_Server_Info *pserver;
2472 struct cifs_ses *ses;
2473 struct cifs_tcon *tcon;
2475 if (shdr->Status != STATUS_NETWORK_NAME_DELETED)
2478 /* If server is a channel, select the primary channel */
2479 pserver = SERVER_IS_CHAN(server) ? server->primary_server : server;
2481 spin_lock(&cifs_tcp_ses_lock);
2482 list_for_each_entry(ses, &pserver->smb_ses_list, smb_ses_list) {
2483 if (cifs_ses_exiting(ses))
2485 list_for_each_entry(tcon, &ses->tcon_list, tcon_list) {
2486 if (tcon->tid == le32_to_cpu(shdr->Id.SyncId.TreeId)) {
2487 spin_lock(&tcon->tc_lock);
2488 tcon->need_reconnect = true;
2489 spin_unlock(&tcon->tc_lock);
2490 spin_unlock(&cifs_tcp_ses_lock);
2491 pr_warn_once("Server share %s deleted.\n",
2497 spin_unlock(&cifs_tcp_ses_lock);
2503 smb2_oplock_response(struct cifs_tcon *tcon, __u64 persistent_fid,
2504 __u64 volatile_fid, __u16 net_fid, struct cifsInodeInfo *cinode)
2506 if (tcon->ses->server->capabilities & SMB2_GLOBAL_CAP_LEASING)
2507 return SMB2_lease_break(0, tcon, cinode->lease_key,
2508 smb2_get_lease_state(cinode));
2510 return SMB2_oplock_break(0, tcon, persistent_fid, volatile_fid,
2511 CIFS_CACHE_READ(cinode) ? 1 : 0);
2515 smb2_set_replay(struct TCP_Server_Info *server, struct smb_rqst *rqst)
2517 struct smb2_hdr *shdr;
2519 if (server->dialect < SMB30_PROT_ID)
2522 shdr = (struct smb2_hdr *)(rqst->rq_iov[0].iov_base);
2524 cifs_dbg(FYI, "shdr NULL in smb2_set_related\n");
2527 shdr->Flags |= SMB2_FLAGS_REPLAY_OPERATION;
2531 smb2_set_related(struct smb_rqst *rqst)
2533 struct smb2_hdr *shdr;
2535 shdr = (struct smb2_hdr *)(rqst->rq_iov[0].iov_base);
2537 cifs_dbg(FYI, "shdr NULL in smb2_set_related\n");
2540 shdr->Flags |= SMB2_FLAGS_RELATED_OPERATIONS;
2543 char smb2_padding[7] = {0, 0, 0, 0, 0, 0, 0};
2546 smb2_set_next_command(struct cifs_tcon *tcon, struct smb_rqst *rqst)
2548 struct smb2_hdr *shdr;
2549 struct cifs_ses *ses = tcon->ses;
2550 struct TCP_Server_Info *server = ses->server;
2551 unsigned long len = smb_rqst_len(server, rqst);
2554 shdr = (struct smb2_hdr *)(rqst->rq_iov[0].iov_base);
2556 cifs_dbg(FYI, "shdr NULL in smb2_set_next_command\n");
2560 /* SMB headers in a compound are 8 byte aligned. */
2562 /* No padding needed */
2566 num_padding = 8 - (len & 7);
2567 if (!smb3_encryption_required(tcon)) {
2569 * If we do not have encryption then we can just add an extra
2570 * iov for the padding.
2572 rqst->rq_iov[rqst->rq_nvec].iov_base = smb2_padding;
2573 rqst->rq_iov[rqst->rq_nvec].iov_len = num_padding;
2578 * We can not add a small padding iov for the encryption case
2579 * because the encryption framework can not handle the padding
2581 * We have to flatten this into a single buffer and add
2582 * the padding to it.
2584 for (i = 1; i < rqst->rq_nvec; i++) {
2585 memcpy(rqst->rq_iov[0].iov_base +
2586 rqst->rq_iov[0].iov_len,
2587 rqst->rq_iov[i].iov_base,
2588 rqst->rq_iov[i].iov_len);
2589 rqst->rq_iov[0].iov_len += rqst->rq_iov[i].iov_len;
2591 memset(rqst->rq_iov[0].iov_base + rqst->rq_iov[0].iov_len,
2593 rqst->rq_iov[0].iov_len += num_padding;
2599 shdr->NextCommand = cpu_to_le32(len);
2603 * helper function for exponential backoff and check if replayable
2605 bool smb2_should_replay(struct cifs_tcon *tcon,
2609 if (!pretries || !pcur_sleep)
2612 if (tcon->retry || (*pretries)++ < tcon->ses->server->retrans) {
2613 msleep(*pcur_sleep);
2614 (*pcur_sleep) = ((*pcur_sleep) << 1);
2615 if ((*pcur_sleep) > CIFS_MAX_SLEEP)
2616 (*pcur_sleep) = CIFS_MAX_SLEEP;
2624 * Passes the query info response back to the caller on success.
2625 * Caller need to free this with free_rsp_buf().
2628 smb2_query_info_compound(const unsigned int xid, struct cifs_tcon *tcon,
2629 const char *path, u32 desired_access,
2630 u32 class, u32 type, u32 output_len,
2631 struct kvec *rsp, int *buftype,
2632 struct cifs_sb_info *cifs_sb)
2634 struct smb2_compound_vars *vars;
2635 struct cifs_ses *ses = tcon->ses;
2636 struct TCP_Server_Info *server;
2637 int flags = CIFS_CP_CREATE_CLOSE_OP;
2638 struct smb_rqst *rqst;
2639 int resp_buftype[3];
2640 struct kvec *rsp_iov;
2641 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
2642 struct cifs_open_parms oparms;
2643 struct cifs_fid fid;
2646 struct cached_fid *cfid = NULL;
2647 int retries = 0, cur_sleep = 1;
2650 /* reinitialize for possible replay */
2651 flags = CIFS_CP_CREATE_CLOSE_OP;
2652 oplock = SMB2_OPLOCK_LEVEL_NONE;
2653 server = cifs_pick_channel(ses);
2657 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
2661 if (smb3_encryption_required(tcon))
2662 flags |= CIFS_TRANSFORM_REQ;
2664 resp_buftype[0] = resp_buftype[1] = resp_buftype[2] = CIFS_NO_BUFFER;
2665 vars = kzalloc(sizeof(*vars), GFP_KERNEL);
2671 rsp_iov = vars->rsp_iov;
2674 * We can only call this for things we know are directories.
2676 if (!strcmp(path, ""))
2677 open_cached_dir(xid, tcon, path, cifs_sb, false,
2678 &cfid); /* cfid null if open dir failed */
2680 rqst[0].rq_iov = vars->open_iov;
2681 rqst[0].rq_nvec = SMB2_CREATE_IOV_SIZE;
2683 oparms = (struct cifs_open_parms) {
2686 .desired_access = desired_access,
2687 .disposition = FILE_OPEN,
2688 .create_options = cifs_create_options(cifs_sb, 0),
2690 .replay = !!(retries),
2693 rc = SMB2_open_init(tcon, server,
2694 &rqst[0], &oplock, &oparms, utf16_path);
2697 smb2_set_next_command(tcon, &rqst[0]);
2699 rqst[1].rq_iov = &vars->qi_iov;
2700 rqst[1].rq_nvec = 1;
2703 rc = SMB2_query_info_init(tcon, server,
2705 cfid->fid.persistent_fid,
2706 cfid->fid.volatile_fid,
2711 rc = SMB2_query_info_init(tcon, server,
2722 smb2_set_next_command(tcon, &rqst[1]);
2723 smb2_set_related(&rqst[1]);
2726 rqst[2].rq_iov = &vars->close_iov;
2727 rqst[2].rq_nvec = 1;
2729 rc = SMB2_close_init(tcon, server,
2730 &rqst[2], COMPOUND_FID, COMPOUND_FID, false);
2733 smb2_set_related(&rqst[2]);
2737 smb2_set_replay(server, &rqst[0]);
2738 smb2_set_replay(server, &rqst[2]);
2740 smb2_set_replay(server, &rqst[1]);
2744 rc = compound_send_recv(xid, ses, server,
2746 &resp_buftype[1], &rsp_iov[1]);
2748 rc = compound_send_recv(xid, ses, server,
2750 resp_buftype, rsp_iov);
2753 free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base);
2754 if (rc == -EREMCHG) {
2755 tcon->need_reconnect = true;
2756 pr_warn_once("server share %s deleted\n",
2762 *buftype = resp_buftype[1];
2765 SMB2_open_free(&rqst[0]);
2766 SMB2_query_info_free(&rqst[1]);
2767 SMB2_close_free(&rqst[2]);
2768 free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base);
2769 free_rsp_buf(resp_buftype[2], rsp_iov[2].iov_base);
2771 close_cached_dir(cfid);
2776 if (is_replayable_error(rc) &&
2777 smb2_should_replay(tcon, &retries, &cur_sleep))
2784 smb2_queryfs(const unsigned int xid, struct cifs_tcon *tcon,
2785 struct cifs_sb_info *cifs_sb, struct kstatfs *buf)
2787 struct smb2_query_info_rsp *rsp;
2788 struct smb2_fs_full_size_info *info = NULL;
2789 struct kvec rsp_iov = {NULL, 0};
2790 int buftype = CIFS_NO_BUFFER;
2794 rc = smb2_query_info_compound(xid, tcon, "",
2795 FILE_READ_ATTRIBUTES,
2796 FS_FULL_SIZE_INFORMATION,
2797 SMB2_O_INFO_FILESYSTEM,
2798 sizeof(struct smb2_fs_full_size_info),
2799 &rsp_iov, &buftype, cifs_sb);
2803 rsp = (struct smb2_query_info_rsp *)rsp_iov.iov_base;
2804 buf->f_type = SMB2_SUPER_MAGIC;
2805 info = (struct smb2_fs_full_size_info *)(
2806 le16_to_cpu(rsp->OutputBufferOffset) + (char *)rsp);
2807 rc = smb2_validate_iov(le16_to_cpu(rsp->OutputBufferOffset),
2808 le32_to_cpu(rsp->OutputBufferLength),
2810 sizeof(struct smb2_fs_full_size_info));
2812 smb2_copy_fs_info_to_kstatfs(info, buf);
2815 trace_smb3_qfs_done(xid, tcon->tid, tcon->ses->Suid, tcon->tree_name, rc);
2816 free_rsp_buf(buftype, rsp_iov.iov_base);
2821 smb311_queryfs(const unsigned int xid, struct cifs_tcon *tcon,
2822 struct cifs_sb_info *cifs_sb, struct kstatfs *buf)
2825 __le16 srch_path = 0; /* Null - open root of share */
2826 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
2827 struct cifs_open_parms oparms;
2828 struct cifs_fid fid;
2830 if (!tcon->posix_extensions)
2831 return smb2_queryfs(xid, tcon, cifs_sb, buf);
2833 oparms = (struct cifs_open_parms) {
2836 .desired_access = FILE_READ_ATTRIBUTES,
2837 .disposition = FILE_OPEN,
2838 .create_options = cifs_create_options(cifs_sb, 0),
2842 rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL,
2847 rc = SMB311_posix_qfs_info(xid, tcon, fid.persistent_fid,
2848 fid.volatile_fid, buf);
2849 buf->f_type = SMB2_SUPER_MAGIC;
2850 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
2855 smb2_compare_fids(struct cifsFileInfo *ob1, struct cifsFileInfo *ob2)
2857 return ob1->fid.persistent_fid == ob2->fid.persistent_fid &&
2858 ob1->fid.volatile_fid == ob2->fid.volatile_fid;
2862 smb2_mand_lock(const unsigned int xid, struct cifsFileInfo *cfile, __u64 offset,
2863 __u64 length, __u32 type, int lock, int unlock, bool wait)
2865 if (unlock && !lock)
2866 type = SMB2_LOCKFLAG_UNLOCK;
2867 return SMB2_lock(xid, tlink_tcon(cfile->tlink),
2868 cfile->fid.persistent_fid, cfile->fid.volatile_fid,
2869 current->tgid, length, offset, type, wait);
2873 smb2_get_lease_key(struct inode *inode, struct cifs_fid *fid)
2875 memcpy(fid->lease_key, CIFS_I(inode)->lease_key, SMB2_LEASE_KEY_SIZE);
2879 smb2_set_lease_key(struct inode *inode, struct cifs_fid *fid)
2881 memcpy(CIFS_I(inode)->lease_key, fid->lease_key, SMB2_LEASE_KEY_SIZE);
2885 smb2_new_lease_key(struct cifs_fid *fid)
2887 generate_random_uuid(fid->lease_key);
2891 smb2_get_dfs_refer(const unsigned int xid, struct cifs_ses *ses,
2892 const char *search_name,
2893 struct dfs_info3_param **target_nodes,
2894 unsigned int *num_of_nodes,
2895 const struct nls_table *nls_codepage, int remap)
2898 __le16 *utf16_path = NULL;
2899 int utf16_path_len = 0;
2900 struct cifs_tcon *tcon;
2901 struct fsctl_get_dfs_referral_req *dfs_req = NULL;
2902 struct get_dfs_referral_rsp *dfs_rsp = NULL;
2903 u32 dfs_req_size = 0, dfs_rsp_size = 0;
2904 int retry_count = 0;
2906 cifs_dbg(FYI, "%s: path: %s\n", __func__, search_name);
2909 * Try to use the IPC tcon, otherwise just use any
2911 tcon = ses->tcon_ipc;
2913 spin_lock(&cifs_tcp_ses_lock);
2914 tcon = list_first_entry_or_null(&ses->tcon_list,
2919 spin_unlock(&cifs_tcp_ses_lock);
2923 cifs_dbg(VFS, "session %p has no tcon available for a dfs referral request\n",
2929 utf16_path = cifs_strndup_to_utf16(search_name, PATH_MAX,
2931 nls_codepage, remap);
2937 dfs_req_size = sizeof(*dfs_req) + utf16_path_len;
2938 dfs_req = kzalloc(dfs_req_size, GFP_KERNEL);
2944 /* Highest DFS referral version understood */
2945 dfs_req->MaxReferralLevel = DFS_VERSION;
2947 /* Path to resolve in an UTF-16 null-terminated string */
2948 memcpy(dfs_req->RequestFileName, utf16_path, utf16_path_len);
2951 rc = SMB2_ioctl(xid, tcon, NO_FILE_ID, NO_FILE_ID,
2952 FSCTL_DFS_GET_REFERRALS,
2953 (char *)dfs_req, dfs_req_size, CIFSMaxBufSize,
2954 (char **)&dfs_rsp, &dfs_rsp_size);
2955 if (!is_retryable_error(rc))
2957 usleep_range(512, 2048);
2958 } while (++retry_count < 5);
2960 if (!rc && !dfs_rsp)
2963 if (!is_retryable_error(rc) && rc != -ENOENT && rc != -EOPNOTSUPP)
2964 cifs_tcon_dbg(VFS, "%s: ioctl error: rc=%d\n", __func__, rc);
2968 rc = parse_dfs_referrals(dfs_rsp, dfs_rsp_size,
2969 num_of_nodes, target_nodes,
2970 nls_codepage, remap, search_name,
2971 true /* is_unicode */);
2973 cifs_tcon_dbg(VFS, "parse error in %s rc=%d\n", __func__, rc);
2978 if (tcon && !tcon->ipc) {
2979 /* ipc tcons are not refcounted */
2980 spin_lock(&cifs_tcp_ses_lock);
2982 /* tc_count can never go negative */
2983 WARN_ON(tcon->tc_count < 0);
2984 spin_unlock(&cifs_tcp_ses_lock);
2992 /* See MS-FSCC 2.1.2.6 for the 'NFS' style reparse tags */
2993 static int parse_reparse_posix(struct reparse_posix_data *buf,
2994 struct cifs_sb_info *cifs_sb,
2995 struct cifs_open_info_data *data)
3000 switch ((type = le64_to_cpu(buf->InodeType))) {
3001 case NFS_SPECFILE_LNK:
3002 len = le16_to_cpu(buf->ReparseDataLength);
3003 data->symlink_target = cifs_strndup_from_utf16(buf->DataBuffer,
3005 cifs_sb->local_nls);
3006 if (!data->symlink_target)
3008 convert_delimiter(data->symlink_target, '/');
3009 cifs_dbg(FYI, "%s: target path: %s\n",
3010 __func__, data->symlink_target);
3012 case NFS_SPECFILE_CHR:
3013 case NFS_SPECFILE_BLK:
3014 case NFS_SPECFILE_FIFO:
3015 case NFS_SPECFILE_SOCK:
3018 cifs_dbg(VFS, "%s: unhandled inode type: 0x%llx\n",
3025 static int parse_reparse_symlink(struct reparse_symlink_data_buffer *sym,
3026 u32 plen, bool unicode,
3027 struct cifs_sb_info *cifs_sb,
3028 struct cifs_open_info_data *data)
3033 /* We handle Symbolic Link reparse tag here. See: MS-FSCC 2.1.2.4 */
3035 offs = le16_to_cpu(sym->SubstituteNameOffset);
3036 len = le16_to_cpu(sym->SubstituteNameLength);
3037 if (offs + 20 > plen || offs + len + 20 > plen) {
3038 cifs_dbg(VFS, "srv returned malformed symlink buffer\n");
3042 data->symlink_target = cifs_strndup_from_utf16(sym->PathBuffer + offs,
3044 cifs_sb->local_nls);
3045 if (!data->symlink_target)
3048 convert_delimiter(data->symlink_target, '/');
3049 cifs_dbg(FYI, "%s: target path: %s\n", __func__, data->symlink_target);
3054 int parse_reparse_point(struct reparse_data_buffer *buf,
3055 u32 plen, struct cifs_sb_info *cifs_sb,
3056 bool unicode, struct cifs_open_info_data *data)
3058 data->reparse.buf = buf;
3060 /* See MS-FSCC 2.1.2 */
3061 switch (le32_to_cpu(buf->ReparseTag)) {
3062 case IO_REPARSE_TAG_NFS:
3063 return parse_reparse_posix((struct reparse_posix_data *)buf,
3065 case IO_REPARSE_TAG_SYMLINK:
3066 return parse_reparse_symlink(
3067 (struct reparse_symlink_data_buffer *)buf,
3068 plen, unicode, cifs_sb, data);
3069 case IO_REPARSE_TAG_LX_SYMLINK:
3070 case IO_REPARSE_TAG_AF_UNIX:
3071 case IO_REPARSE_TAG_LX_FIFO:
3072 case IO_REPARSE_TAG_LX_CHR:
3073 case IO_REPARSE_TAG_LX_BLK:
3076 cifs_dbg(VFS, "%s: unhandled reparse tag: 0x%08x\n",
3077 __func__, le32_to_cpu(buf->ReparseTag));
3082 static int smb2_parse_reparse_point(struct cifs_sb_info *cifs_sb,
3083 struct kvec *rsp_iov,
3084 struct cifs_open_info_data *data)
3086 struct reparse_data_buffer *buf;
3087 struct smb2_ioctl_rsp *io = rsp_iov->iov_base;
3088 u32 plen = le32_to_cpu(io->OutputCount);
3090 buf = (struct reparse_data_buffer *)((u8 *)io +
3091 le32_to_cpu(io->OutputOffset));
3092 return parse_reparse_point(buf, plen, cifs_sb, true, data);
3095 static struct cifs_ntsd *
3096 get_smb2_acl_by_fid(struct cifs_sb_info *cifs_sb,
3097 const struct cifs_fid *cifsfid, u32 *pacllen, u32 info)
3099 struct cifs_ntsd *pntsd = NULL;
3101 int rc = -EOPNOTSUPP;
3102 struct tcon_link *tlink = cifs_sb_tlink(cifs_sb);
3105 return ERR_CAST(tlink);
3108 cifs_dbg(FYI, "trying to get acl\n");
3110 rc = SMB2_query_acl(xid, tlink_tcon(tlink), cifsfid->persistent_fid,
3111 cifsfid->volatile_fid, (void **)&pntsd, pacllen,
3115 cifs_put_tlink(tlink);
3117 cifs_dbg(FYI, "%s: rc = %d ACL len %d\n", __func__, rc, *pacllen);
3124 static struct cifs_ntsd *
3125 get_smb2_acl_by_path(struct cifs_sb_info *cifs_sb,
3126 const char *path, u32 *pacllen, u32 info)
3128 struct cifs_ntsd *pntsd = NULL;
3129 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
3132 struct cifs_tcon *tcon;
3133 struct tcon_link *tlink = cifs_sb_tlink(cifs_sb);
3134 struct cifs_fid fid;
3135 struct cifs_open_parms oparms;
3138 cifs_dbg(FYI, "get smb3 acl for path %s\n", path);
3140 return ERR_CAST(tlink);
3142 tcon = tlink_tcon(tlink);
3145 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
3152 oparms = (struct cifs_open_parms) {
3155 .desired_access = READ_CONTROL,
3156 .disposition = FILE_OPEN,
3158 * When querying an ACL, even if the file is a symlink
3159 * we want to open the source not the target, and so
3160 * the protocol requires that the client specify this
3161 * flag when opening a reparse point
3163 .create_options = cifs_create_options(cifs_sb, 0) |
3168 if (info & SACL_SECINFO)
3169 oparms.desired_access |= SYSTEM_SECURITY;
3171 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL, NULL,
3175 rc = SMB2_query_acl(xid, tlink_tcon(tlink), fid.persistent_fid,
3176 fid.volatile_fid, (void **)&pntsd, pacllen,
3178 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
3181 cifs_put_tlink(tlink);
3184 cifs_dbg(FYI, "%s: rc = %d ACL len %d\n", __func__, rc, *pacllen);
3191 set_smb2_acl(struct cifs_ntsd *pnntsd, __u32 acllen,
3192 struct inode *inode, const char *path, int aclflag)
3194 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
3196 int rc, access_flags = 0;
3197 struct cifs_tcon *tcon;
3198 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
3199 struct tcon_link *tlink = cifs_sb_tlink(cifs_sb);
3200 struct cifs_fid fid;
3201 struct cifs_open_parms oparms;
3204 cifs_dbg(FYI, "set smb3 acl for path %s\n", path);
3206 return PTR_ERR(tlink);
3208 tcon = tlink_tcon(tlink);
3211 if (aclflag & CIFS_ACL_OWNER || aclflag & CIFS_ACL_GROUP)
3212 access_flags |= WRITE_OWNER;
3213 if (aclflag & CIFS_ACL_SACL)
3214 access_flags |= SYSTEM_SECURITY;
3215 if (aclflag & CIFS_ACL_DACL)
3216 access_flags |= WRITE_DAC;
3218 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
3225 oparms = (struct cifs_open_parms) {
3227 .desired_access = access_flags,
3228 .create_options = cifs_create_options(cifs_sb, 0),
3229 .disposition = FILE_OPEN,
3234 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL,
3238 rc = SMB2_set_acl(xid, tlink_tcon(tlink), fid.persistent_fid,
3239 fid.volatile_fid, pnntsd, acllen, aclflag);
3240 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
3243 cifs_put_tlink(tlink);
3248 /* Retrieve an ACL from the server */
3249 static struct cifs_ntsd *
3250 get_smb2_acl(struct cifs_sb_info *cifs_sb,
3251 struct inode *inode, const char *path,
3252 u32 *pacllen, u32 info)
3254 struct cifs_ntsd *pntsd = NULL;
3255 struct cifsFileInfo *open_file = NULL;
3257 if (inode && !(info & SACL_SECINFO))
3258 open_file = find_readable_file(CIFS_I(inode), true);
3259 if (!open_file || (info & SACL_SECINFO))
3260 return get_smb2_acl_by_path(cifs_sb, path, pacllen, info);
3262 pntsd = get_smb2_acl_by_fid(cifs_sb, &open_file->fid, pacllen, info);
3263 cifsFileInfo_put(open_file);
3267 static long smb3_zero_data(struct file *file, struct cifs_tcon *tcon,
3268 loff_t offset, loff_t len, unsigned int xid)
3270 struct cifsFileInfo *cfile = file->private_data;
3271 struct file_zero_data_information fsctl_buf;
3273 cifs_dbg(FYI, "Offset %lld len %lld\n", offset, len);
3275 fsctl_buf.FileOffset = cpu_to_le64(offset);
3276 fsctl_buf.BeyondFinalZero = cpu_to_le64(offset + len);
3278 return SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
3279 cfile->fid.volatile_fid, FSCTL_SET_ZERO_DATA,
3281 sizeof(struct file_zero_data_information),
3285 static long smb3_zero_range(struct file *file, struct cifs_tcon *tcon,
3286 loff_t offset, loff_t len, bool keep_size)
3288 struct cifs_ses *ses = tcon->ses;
3289 struct inode *inode = file_inode(file);
3290 struct cifsInodeInfo *cifsi = CIFS_I(inode);
3291 struct cifsFileInfo *cfile = file->private_data;
3292 unsigned long long new_size;
3298 trace_smb3_zero_enter(xid, cfile->fid.persistent_fid, tcon->tid,
3299 ses->Suid, offset, len);
3302 filemap_invalidate_lock(inode->i_mapping);
3305 * We zero the range through ioctl, so we need remove the page caches
3306 * first, otherwise the data may be inconsistent with the server.
3308 truncate_pagecache_range(inode, offset, offset + len - 1);
3310 /* if file not oplocked can't be sure whether asking to extend size */
3312 if (keep_size == false && !CIFS_CACHE_READ(cifsi))
3313 goto zero_range_exit;
3315 rc = smb3_zero_data(file, tcon, offset, len, xid);
3317 goto zero_range_exit;
3320 * do we also need to change the size of the file?
3322 new_size = offset + len;
3323 if (keep_size == false && (unsigned long long)i_size_read(inode) < new_size) {
3324 rc = SMB2_set_eof(xid, tcon, cfile->fid.persistent_fid,
3325 cfile->fid.volatile_fid, cfile->pid, new_size);
3327 truncate_setsize(inode, new_size);
3328 netfs_resize_file(&cifsi->netfs, new_size, true);
3329 if (offset < cifsi->netfs.zero_point)
3330 cifsi->netfs.zero_point = offset;
3331 fscache_resize_cookie(cifs_inode_cookie(inode), new_size);
3336 filemap_invalidate_unlock(inode->i_mapping);
3337 inode_unlock(inode);
3340 trace_smb3_zero_err(xid, cfile->fid.persistent_fid, tcon->tid,
3341 ses->Suid, offset, len, rc);
3343 trace_smb3_zero_done(xid, cfile->fid.persistent_fid, tcon->tid,
3344 ses->Suid, offset, len);
3348 static long smb3_punch_hole(struct file *file, struct cifs_tcon *tcon,
3349 loff_t offset, loff_t len)
3351 struct inode *inode = file_inode(file);
3352 struct cifsFileInfo *cfile = file->private_data;
3353 struct file_zero_data_information fsctl_buf;
3356 __u8 set_sparse = 1;
3361 /* Need to make file sparse, if not already, before freeing range. */
3362 /* Consider adding equivalent for compressed since it could also work */
3363 if (!smb2_set_sparse(xid, tcon, cfile, inode, set_sparse)) {
3368 filemap_invalidate_lock(inode->i_mapping);
3370 * We implement the punch hole through ioctl, so we need remove the page
3371 * caches first, otherwise the data may be inconsistent with the server.
3373 truncate_pagecache_range(inode, offset, offset + len - 1);
3375 cifs_dbg(FYI, "Offset %lld len %lld\n", offset, len);
3377 fsctl_buf.FileOffset = cpu_to_le64(offset);
3378 fsctl_buf.BeyondFinalZero = cpu_to_le64(offset + len);
3380 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
3381 cfile->fid.volatile_fid, FSCTL_SET_ZERO_DATA,
3383 sizeof(struct file_zero_data_information),
3384 CIFSMaxBufSize, NULL, NULL);
3385 filemap_invalidate_unlock(inode->i_mapping);
3387 inode_unlock(inode);
3392 static int smb3_simple_fallocate_write_range(unsigned int xid,
3393 struct cifs_tcon *tcon,
3394 struct cifsFileInfo *cfile,
3395 loff_t off, loff_t len,
3398 struct cifs_io_parms io_parms = {0};
3403 io_parms.netfid = cfile->fid.netfid;
3404 io_parms.pid = current->tgid;
3405 io_parms.tcon = tcon;
3406 io_parms.persistent_fid = cfile->fid.persistent_fid;
3407 io_parms.volatile_fid = cfile->fid.volatile_fid;
3410 io_parms.offset = off;
3411 io_parms.length = len;
3412 if (io_parms.length > SMB2_MAX_BUFFER_SIZE)
3413 io_parms.length = SMB2_MAX_BUFFER_SIZE;
3414 /* iov[0] is reserved for smb header */
3415 iov[1].iov_base = buf;
3416 iov[1].iov_len = io_parms.length;
3417 rc = SMB2_write(xid, &io_parms, &nbytes, iov, 1);
3429 static int smb3_simple_fallocate_range(unsigned int xid,
3430 struct cifs_tcon *tcon,
3431 struct cifsFileInfo *cfile,
3432 loff_t off, loff_t len)
3434 struct file_allocated_range_buffer in_data, *out_data = NULL, *tmp_data;
3440 in_data.file_offset = cpu_to_le64(off);
3441 in_data.length = cpu_to_le64(len);
3442 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
3443 cfile->fid.volatile_fid,
3444 FSCTL_QUERY_ALLOCATED_RANGES,
3445 (char *)&in_data, sizeof(in_data),
3446 1024 * sizeof(struct file_allocated_range_buffer),
3447 (char **)&out_data, &out_data_len);
3451 buf = kzalloc(1024 * 1024, GFP_KERNEL);
3457 tmp_data = out_data;
3460 * The rest of the region is unmapped so write it all.
3462 if (out_data_len == 0) {
3463 rc = smb3_simple_fallocate_write_range(xid, tcon,
3464 cfile, off, len, buf);
3468 if (out_data_len < sizeof(struct file_allocated_range_buffer)) {
3473 if (off < le64_to_cpu(tmp_data->file_offset)) {
3475 * We are at a hole. Write until the end of the region
3476 * or until the next allocated data,
3477 * whichever comes next.
3479 l = le64_to_cpu(tmp_data->file_offset) - off;
3482 rc = smb3_simple_fallocate_write_range(xid, tcon,
3483 cfile, off, l, buf);
3492 * We are at a section of allocated data, just skip forward
3493 * until the end of the data or the end of the region
3494 * we are supposed to fallocate, whichever comes first.
3496 l = le64_to_cpu(tmp_data->length);
3502 tmp_data = &tmp_data[1];
3503 out_data_len -= sizeof(struct file_allocated_range_buffer);
3513 static long smb3_simple_falloc(struct file *file, struct cifs_tcon *tcon,
3514 loff_t off, loff_t len, bool keep_size)
3516 struct inode *inode;
3517 struct cifsInodeInfo *cifsi;
3518 struct cifsFileInfo *cfile = file->private_data;
3519 long rc = -EOPNOTSUPP;
3525 inode = d_inode(cfile->dentry);
3526 cifsi = CIFS_I(inode);
3528 trace_smb3_falloc_enter(xid, cfile->fid.persistent_fid, tcon->tid,
3529 tcon->ses->Suid, off, len);
3530 /* if file not oplocked can't be sure whether asking to extend size */
3531 if (!CIFS_CACHE_READ(cifsi))
3532 if (keep_size == false) {
3533 trace_smb3_falloc_err(xid, cfile->fid.persistent_fid,
3534 tcon->tid, tcon->ses->Suid, off, len, rc);
3540 * Extending the file
3542 if ((keep_size == false) && i_size_read(inode) < off + len) {
3543 rc = inode_newsize_ok(inode, off + len);
3547 if (cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE)
3548 smb2_set_sparse(xid, tcon, cfile, inode, false);
3550 new_eof = off + len;
3551 rc = SMB2_set_eof(xid, tcon, cfile->fid.persistent_fid,
3552 cfile->fid.volatile_fid, cfile->pid, new_eof);
3554 netfs_resize_file(&cifsi->netfs, new_eof, true);
3555 cifs_setsize(inode, new_eof);
3556 cifs_truncate_page(inode->i_mapping, inode->i_size);
3557 truncate_setsize(inode, new_eof);
3563 * Files are non-sparse by default so falloc may be a no-op
3564 * Must check if file sparse. If not sparse, and since we are not
3565 * extending then no need to do anything since file already allocated
3567 if ((cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) == 0) {
3572 if (keep_size == true) {
3574 * We can not preallocate pages beyond the end of the file
3577 if (off >= i_size_read(inode)) {
3582 * For fallocates that are partially beyond the end of file,
3583 * clamp len so we only fallocate up to the end of file.
3585 if (off + len > i_size_read(inode)) {
3586 len = i_size_read(inode) - off;
3590 if ((keep_size == true) || (i_size_read(inode) >= off + len)) {
3592 * At this point, we are trying to fallocate an internal
3593 * regions of a sparse file. Since smb2 does not have a
3594 * fallocate command we have two otions on how to emulate this.
3595 * We can either turn the entire file to become non-sparse
3596 * which we only do if the fallocate is for virtually
3597 * the whole file, or we can overwrite the region with zeroes
3598 * using SMB2_write, which could be prohibitevly expensive
3602 * We are only trying to fallocate a small region so
3603 * just write it with zero.
3605 if (len <= 1024 * 1024) {
3606 rc = smb3_simple_fallocate_range(xid, tcon, cfile,
3612 * Check if falloc starts within first few pages of file
3613 * and ends within a few pages of the end of file to
3614 * ensure that most of file is being forced to be
3615 * fallocated now. If so then setting whole file sparse
3616 * ie potentially making a few extra pages at the beginning
3617 * or end of the file non-sparse via set_sparse is harmless.
3619 if ((off > 8192) || (off + len + 8192 < i_size_read(inode))) {
3625 smb2_set_sparse(xid, tcon, cfile, inode, false);
3630 trace_smb3_falloc_err(xid, cfile->fid.persistent_fid, tcon->tid,
3631 tcon->ses->Suid, off, len, rc);
3633 trace_smb3_falloc_done(xid, cfile->fid.persistent_fid, tcon->tid,
3634 tcon->ses->Suid, off, len);
3640 static long smb3_collapse_range(struct file *file, struct cifs_tcon *tcon,
3641 loff_t off, loff_t len)
3645 struct inode *inode = file_inode(file);
3646 struct cifsInodeInfo *cifsi = CIFS_I(inode);
3647 struct cifsFileInfo *cfile = file->private_data;
3648 struct netfs_inode *ictx = &cifsi->netfs;
3649 loff_t old_eof, new_eof;
3655 old_eof = i_size_read(inode);
3656 if ((off >= old_eof) ||
3657 off + len >= old_eof) {
3662 filemap_invalidate_lock(inode->i_mapping);
3663 rc = filemap_write_and_wait_range(inode->i_mapping, off, old_eof - 1);
3667 truncate_pagecache_range(inode, off, old_eof);
3668 ictx->zero_point = old_eof;
3670 rc = smb2_copychunk_range(xid, cfile, cfile, off + len,
3671 old_eof - off - len, off);
3675 new_eof = old_eof - len;
3676 rc = SMB2_set_eof(xid, tcon, cfile->fid.persistent_fid,
3677 cfile->fid.volatile_fid, cfile->pid, new_eof);
3683 truncate_setsize(inode, new_eof);
3684 netfs_resize_file(&cifsi->netfs, new_eof, true);
3685 ictx->zero_point = new_eof;
3686 fscache_resize_cookie(cifs_inode_cookie(inode), new_eof);
3688 filemap_invalidate_unlock(inode->i_mapping);
3690 inode_unlock(inode);
3695 static long smb3_insert_range(struct file *file, struct cifs_tcon *tcon,
3696 loff_t off, loff_t len)
3700 struct cifsFileInfo *cfile = file->private_data;
3701 struct inode *inode = file_inode(file);
3702 struct cifsInodeInfo *cifsi = CIFS_I(inode);
3703 __u64 count, old_eof, new_eof;
3709 old_eof = i_size_read(inode);
3710 if (off >= old_eof) {
3715 count = old_eof - off;
3716 new_eof = old_eof + len;
3718 filemap_invalidate_lock(inode->i_mapping);
3719 rc = filemap_write_and_wait_range(inode->i_mapping, off, new_eof - 1);
3722 truncate_pagecache_range(inode, off, old_eof);
3724 rc = SMB2_set_eof(xid, tcon, cfile->fid.persistent_fid,
3725 cfile->fid.volatile_fid, cfile->pid, new_eof);
3729 truncate_setsize(inode, new_eof);
3730 netfs_resize_file(&cifsi->netfs, i_size_read(inode), true);
3731 fscache_resize_cookie(cifs_inode_cookie(inode), i_size_read(inode));
3733 rc = smb2_copychunk_range(xid, cfile, cfile, off, count, off + len);
3737 rc = smb3_zero_data(file, tcon, off, len, xid);
3743 filemap_invalidate_unlock(inode->i_mapping);
3745 inode_unlock(inode);
3750 static loff_t smb3_llseek(struct file *file, struct cifs_tcon *tcon, loff_t offset, int whence)
3752 struct cifsFileInfo *wrcfile, *cfile = file->private_data;
3753 struct cifsInodeInfo *cifsi;
3754 struct inode *inode;
3756 struct file_allocated_range_buffer in_data, *out_data = NULL;
3760 if (whence != SEEK_HOLE && whence != SEEK_DATA)
3761 return generic_file_llseek(file, offset, whence);
3763 inode = d_inode(cfile->dentry);
3764 cifsi = CIFS_I(inode);
3766 if (offset < 0 || offset >= i_size_read(inode))
3771 * We need to be sure that all dirty pages are written as they
3772 * might fill holes on the server.
3773 * Note that we also MUST flush any written pages since at least
3774 * some servers (Windows2016) will not reflect recent writes in
3775 * QUERY_ALLOCATED_RANGES until SMB2_flush is called.
3777 wrcfile = find_writable_file(cifsi, FIND_WR_ANY);
3779 filemap_write_and_wait(inode->i_mapping);
3780 smb2_flush_file(xid, tcon, &wrcfile->fid);
3781 cifsFileInfo_put(wrcfile);
3784 if (!(cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE)) {
3785 if (whence == SEEK_HOLE)
3786 offset = i_size_read(inode);
3790 in_data.file_offset = cpu_to_le64(offset);
3791 in_data.length = cpu_to_le64(i_size_read(inode));
3793 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
3794 cfile->fid.volatile_fid,
3795 FSCTL_QUERY_ALLOCATED_RANGES,
3796 (char *)&in_data, sizeof(in_data),
3797 sizeof(struct file_allocated_range_buffer),
3798 (char **)&out_data, &out_data_len);
3804 if (whence == SEEK_HOLE && out_data_len == 0)
3807 if (whence == SEEK_DATA && out_data_len == 0) {
3812 if (out_data_len < sizeof(struct file_allocated_range_buffer)) {
3816 if (whence == SEEK_DATA) {
3817 offset = le64_to_cpu(out_data->file_offset);
3820 if (offset < le64_to_cpu(out_data->file_offset))
3823 offset = le64_to_cpu(out_data->file_offset) + le64_to_cpu(out_data->length);
3829 return vfs_setpos(file, offset, inode->i_sb->s_maxbytes);
3834 static int smb3_fiemap(struct cifs_tcon *tcon,
3835 struct cifsFileInfo *cfile,
3836 struct fiemap_extent_info *fei, u64 start, u64 len)
3839 struct file_allocated_range_buffer in_data, *out_data;
3841 int i, num, rc, flags, last_blob;
3844 rc = fiemap_prep(d_inode(cfile->dentry), fei, start, &len, 0);
3850 in_data.file_offset = cpu_to_le64(start);
3851 in_data.length = cpu_to_le64(len);
3853 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
3854 cfile->fid.volatile_fid,
3855 FSCTL_QUERY_ALLOCATED_RANGES,
3856 (char *)&in_data, sizeof(in_data),
3857 1024 * sizeof(struct file_allocated_range_buffer),
3858 (char **)&out_data, &out_data_len);
3867 if (out_data_len && out_data_len < sizeof(struct file_allocated_range_buffer)) {
3871 if (out_data_len % sizeof(struct file_allocated_range_buffer)) {
3876 num = out_data_len / sizeof(struct file_allocated_range_buffer);
3877 for (i = 0; i < num; i++) {
3879 if (i == num - 1 && last_blob)
3880 flags |= FIEMAP_EXTENT_LAST;
3882 rc = fiemap_fill_next_extent(fei,
3883 le64_to_cpu(out_data[i].file_offset),
3884 le64_to_cpu(out_data[i].file_offset),
3885 le64_to_cpu(out_data[i].length),
3896 next = le64_to_cpu(out_data[num - 1].file_offset) +
3897 le64_to_cpu(out_data[num - 1].length);
3898 len = len - (next - start);
3909 static long smb3_fallocate(struct file *file, struct cifs_tcon *tcon, int mode,
3910 loff_t off, loff_t len)
3912 /* KEEP_SIZE already checked for by do_fallocate */
3913 if (mode & FALLOC_FL_PUNCH_HOLE)
3914 return smb3_punch_hole(file, tcon, off, len);
3915 else if (mode & FALLOC_FL_ZERO_RANGE) {
3916 if (mode & FALLOC_FL_KEEP_SIZE)
3917 return smb3_zero_range(file, tcon, off, len, true);
3918 return smb3_zero_range(file, tcon, off, len, false);
3919 } else if (mode == FALLOC_FL_KEEP_SIZE)
3920 return smb3_simple_falloc(file, tcon, off, len, true);
3921 else if (mode == FALLOC_FL_COLLAPSE_RANGE)
3922 return smb3_collapse_range(file, tcon, off, len);
3923 else if (mode == FALLOC_FL_INSERT_RANGE)
3924 return smb3_insert_range(file, tcon, off, len);
3926 return smb3_simple_falloc(file, tcon, off, len, false);
3932 smb2_downgrade_oplock(struct TCP_Server_Info *server,
3933 struct cifsInodeInfo *cinode, __u32 oplock,
3934 unsigned int epoch, bool *purge_cache)
3936 server->ops->set_oplock_level(cinode, oplock, 0, NULL);
3940 smb21_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
3941 unsigned int epoch, bool *purge_cache);
3944 smb3_downgrade_oplock(struct TCP_Server_Info *server,
3945 struct cifsInodeInfo *cinode, __u32 oplock,
3946 unsigned int epoch, bool *purge_cache)
3948 unsigned int old_state = cinode->oplock;
3949 unsigned int old_epoch = cinode->epoch;
3950 unsigned int new_state;
3952 if (epoch > old_epoch) {
3953 smb21_set_oplock_level(cinode, oplock, 0, NULL);
3954 cinode->epoch = epoch;
3957 new_state = cinode->oplock;
3958 *purge_cache = false;
3960 if ((old_state & CIFS_CACHE_READ_FLG) != 0 &&
3961 (new_state & CIFS_CACHE_READ_FLG) == 0)
3962 *purge_cache = true;
3963 else if (old_state == new_state && (epoch - old_epoch > 1))
3964 *purge_cache = true;
3968 smb2_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
3969 unsigned int epoch, bool *purge_cache)
3972 cinode->lease_granted = false;
3973 if (oplock == SMB2_OPLOCK_LEVEL_NOCHANGE)
3975 if (oplock == SMB2_OPLOCK_LEVEL_BATCH) {
3976 cinode->oplock = CIFS_CACHE_RHW_FLG;
3977 cifs_dbg(FYI, "Batch Oplock granted on inode %p\n",
3978 &cinode->netfs.inode);
3979 } else if (oplock == SMB2_OPLOCK_LEVEL_EXCLUSIVE) {
3980 cinode->oplock = CIFS_CACHE_RW_FLG;
3981 cifs_dbg(FYI, "Exclusive Oplock granted on inode %p\n",
3982 &cinode->netfs.inode);
3983 } else if (oplock == SMB2_OPLOCK_LEVEL_II) {
3984 cinode->oplock = CIFS_CACHE_READ_FLG;
3985 cifs_dbg(FYI, "Level II Oplock granted on inode %p\n",
3986 &cinode->netfs.inode);
3992 smb21_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
3993 unsigned int epoch, bool *purge_cache)
3995 char message[5] = {0};
3996 unsigned int new_oplock = 0;
3999 cinode->lease_granted = true;
4000 if (oplock == SMB2_OPLOCK_LEVEL_NOCHANGE)
4003 /* Check if the server granted an oplock rather than a lease */
4004 if (oplock & SMB2_OPLOCK_LEVEL_EXCLUSIVE)
4005 return smb2_set_oplock_level(cinode, oplock, epoch,
4008 if (oplock & SMB2_LEASE_READ_CACHING_HE) {
4009 new_oplock |= CIFS_CACHE_READ_FLG;
4010 strcat(message, "R");
4012 if (oplock & SMB2_LEASE_HANDLE_CACHING_HE) {
4013 new_oplock |= CIFS_CACHE_HANDLE_FLG;
4014 strcat(message, "H");
4016 if (oplock & SMB2_LEASE_WRITE_CACHING_HE) {
4017 new_oplock |= CIFS_CACHE_WRITE_FLG;
4018 strcat(message, "W");
4021 strncpy(message, "None", sizeof(message));
4023 cinode->oplock = new_oplock;
4024 cifs_dbg(FYI, "%s Lease granted on inode %p\n", message,
4025 &cinode->netfs.inode);
4029 smb3_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
4030 unsigned int epoch, bool *purge_cache)
4032 unsigned int old_oplock = cinode->oplock;
4034 smb21_set_oplock_level(cinode, oplock, epoch, purge_cache);
4037 *purge_cache = false;
4038 if (old_oplock == CIFS_CACHE_READ_FLG) {
4039 if (cinode->oplock == CIFS_CACHE_READ_FLG &&
4040 (epoch - cinode->epoch > 0))
4041 *purge_cache = true;
4042 else if (cinode->oplock == CIFS_CACHE_RH_FLG &&
4043 (epoch - cinode->epoch > 1))
4044 *purge_cache = true;
4045 else if (cinode->oplock == CIFS_CACHE_RHW_FLG &&
4046 (epoch - cinode->epoch > 1))
4047 *purge_cache = true;
4048 else if (cinode->oplock == 0 &&
4049 (epoch - cinode->epoch > 0))
4050 *purge_cache = true;
4051 } else if (old_oplock == CIFS_CACHE_RH_FLG) {
4052 if (cinode->oplock == CIFS_CACHE_RH_FLG &&
4053 (epoch - cinode->epoch > 0))
4054 *purge_cache = true;
4055 else if (cinode->oplock == CIFS_CACHE_RHW_FLG &&
4056 (epoch - cinode->epoch > 1))
4057 *purge_cache = true;
4059 cinode->epoch = epoch;
4063 #ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY
4065 smb2_is_read_op(__u32 oplock)
4067 return oplock == SMB2_OPLOCK_LEVEL_II;
4069 #endif /* CIFS_ALLOW_INSECURE_LEGACY */
4072 smb21_is_read_op(__u32 oplock)
4074 return (oplock & SMB2_LEASE_READ_CACHING_HE) &&
4075 !(oplock & SMB2_LEASE_WRITE_CACHING_HE);
4079 map_oplock_to_lease(u8 oplock)
4081 if (oplock == SMB2_OPLOCK_LEVEL_EXCLUSIVE)
4082 return SMB2_LEASE_WRITE_CACHING_LE | SMB2_LEASE_READ_CACHING_LE;
4083 else if (oplock == SMB2_OPLOCK_LEVEL_II)
4084 return SMB2_LEASE_READ_CACHING_LE;
4085 else if (oplock == SMB2_OPLOCK_LEVEL_BATCH)
4086 return SMB2_LEASE_HANDLE_CACHING_LE | SMB2_LEASE_READ_CACHING_LE |
4087 SMB2_LEASE_WRITE_CACHING_LE;
4092 smb2_create_lease_buf(u8 *lease_key, u8 oplock)
4094 struct create_lease *buf;
4096 buf = kzalloc(sizeof(struct create_lease), GFP_KERNEL);
4100 memcpy(&buf->lcontext.LeaseKey, lease_key, SMB2_LEASE_KEY_SIZE);
4101 buf->lcontext.LeaseState = map_oplock_to_lease(oplock);
4103 buf->ccontext.DataOffset = cpu_to_le16(offsetof
4104 (struct create_lease, lcontext));
4105 buf->ccontext.DataLength = cpu_to_le32(sizeof(struct lease_context));
4106 buf->ccontext.NameOffset = cpu_to_le16(offsetof
4107 (struct create_lease, Name));
4108 buf->ccontext.NameLength = cpu_to_le16(4);
4109 /* SMB2_CREATE_REQUEST_LEASE is "RqLs" */
4118 smb3_create_lease_buf(u8 *lease_key, u8 oplock)
4120 struct create_lease_v2 *buf;
4122 buf = kzalloc(sizeof(struct create_lease_v2), GFP_KERNEL);
4126 memcpy(&buf->lcontext.LeaseKey, lease_key, SMB2_LEASE_KEY_SIZE);
4127 buf->lcontext.LeaseState = map_oplock_to_lease(oplock);
4129 buf->ccontext.DataOffset = cpu_to_le16(offsetof
4130 (struct create_lease_v2, lcontext));
4131 buf->ccontext.DataLength = cpu_to_le32(sizeof(struct lease_context_v2));
4132 buf->ccontext.NameOffset = cpu_to_le16(offsetof
4133 (struct create_lease_v2, Name));
4134 buf->ccontext.NameLength = cpu_to_le16(4);
4135 /* SMB2_CREATE_REQUEST_LEASE is "RqLs" */
4144 smb2_parse_lease_buf(void *buf, unsigned int *epoch, char *lease_key)
4146 struct create_lease *lc = (struct create_lease *)buf;
4148 *epoch = 0; /* not used */
4149 if (lc->lcontext.LeaseFlags & SMB2_LEASE_FLAG_BREAK_IN_PROGRESS_LE)
4150 return SMB2_OPLOCK_LEVEL_NOCHANGE;
4151 return le32_to_cpu(lc->lcontext.LeaseState);
4155 smb3_parse_lease_buf(void *buf, unsigned int *epoch, char *lease_key)
4157 struct create_lease_v2 *lc = (struct create_lease_v2 *)buf;
4159 *epoch = le16_to_cpu(lc->lcontext.Epoch);
4160 if (lc->lcontext.LeaseFlags & SMB2_LEASE_FLAG_BREAK_IN_PROGRESS_LE)
4161 return SMB2_OPLOCK_LEVEL_NOCHANGE;
4163 memcpy(lease_key, &lc->lcontext.LeaseKey, SMB2_LEASE_KEY_SIZE);
4164 return le32_to_cpu(lc->lcontext.LeaseState);
4168 smb2_wp_retry_size(struct inode *inode)
4170 return min_t(unsigned int, CIFS_SB(inode->i_sb)->ctx->wsize,
4171 SMB2_MAX_BUFFER_SIZE);
4175 smb2_dir_needs_close(struct cifsFileInfo *cfile)
4177 return !cfile->invalidHandle;
4181 fill_transform_hdr(struct smb2_transform_hdr *tr_hdr, unsigned int orig_len,
4182 struct smb_rqst *old_rq, __le16 cipher_type)
4184 struct smb2_hdr *shdr =
4185 (struct smb2_hdr *)old_rq->rq_iov[0].iov_base;
4187 memset(tr_hdr, 0, sizeof(struct smb2_transform_hdr));
4188 tr_hdr->ProtocolId = SMB2_TRANSFORM_PROTO_NUM;
4189 tr_hdr->OriginalMessageSize = cpu_to_le32(orig_len);
4190 tr_hdr->Flags = cpu_to_le16(0x01);
4191 if ((cipher_type == SMB2_ENCRYPTION_AES128_GCM) ||
4192 (cipher_type == SMB2_ENCRYPTION_AES256_GCM))
4193 get_random_bytes(&tr_hdr->Nonce, SMB3_AES_GCM_NONCE);
4195 get_random_bytes(&tr_hdr->Nonce, SMB3_AES_CCM_NONCE);
4196 memcpy(&tr_hdr->SessionId, &shdr->SessionId, 8);
4199 static void *smb2_aead_req_alloc(struct crypto_aead *tfm, const struct smb_rqst *rqst,
4200 int num_rqst, const u8 *sig, u8 **iv,
4201 struct aead_request **req, struct sg_table *sgt,
4202 unsigned int *num_sgs, size_t *sensitive_size)
4204 unsigned int req_size = sizeof(**req) + crypto_aead_reqsize(tfm);
4205 unsigned int iv_size = crypto_aead_ivsize(tfm);
4209 *num_sgs = cifs_get_num_sgs(rqst, num_rqst, sig);
4210 if (IS_ERR_VALUE((long)(int)*num_sgs))
4211 return ERR_PTR(*num_sgs);
4214 len += crypto_aead_alignmask(tfm) & ~(crypto_tfm_ctx_alignment() - 1);
4215 len = ALIGN(len, crypto_tfm_ctx_alignment());
4217 len = ALIGN(len, __alignof__(struct scatterlist));
4218 len += array_size(*num_sgs, sizeof(struct scatterlist));
4219 *sensitive_size = len;
4221 p = kvzalloc(len, GFP_NOFS);
4223 return ERR_PTR(-ENOMEM);
4225 *iv = (u8 *)PTR_ALIGN(p, crypto_aead_alignmask(tfm) + 1);
4226 *req = (struct aead_request *)PTR_ALIGN(*iv + iv_size,
4227 crypto_tfm_ctx_alignment());
4228 sgt->sgl = (struct scatterlist *)PTR_ALIGN((u8 *)*req + req_size,
4229 __alignof__(struct scatterlist));
4233 static void *smb2_get_aead_req(struct crypto_aead *tfm, struct smb_rqst *rqst,
4234 int num_rqst, const u8 *sig, u8 **iv,
4235 struct aead_request **req, struct scatterlist **sgl,
4236 size_t *sensitive_size)
4238 struct sg_table sgtable = {};
4239 unsigned int skip, num_sgs, i, j;
4243 p = smb2_aead_req_alloc(tfm, rqst, num_rqst, sig, iv, req, &sgtable,
4244 &num_sgs, sensitive_size);
4248 sg_init_marker(sgtable.sgl, num_sgs);
4251 * The first rqst has a transform header where the
4252 * first 20 bytes are not part of the encrypted blob.
4256 for (i = 0; i < num_rqst; i++) {
4257 struct iov_iter *iter = &rqst[i].rq_iter;
4258 size_t count = iov_iter_count(iter);
4260 for (j = 0; j < rqst[i].rq_nvec; j++) {
4261 cifs_sg_set_buf(&sgtable,
4262 rqst[i].rq_iov[j].iov_base + skip,
4263 rqst[i].rq_iov[j].iov_len - skip);
4265 /* See the above comment on the 'skip' assignment */
4268 sgtable.orig_nents = sgtable.nents;
4270 rc = extract_iter_to_sg(iter, count, &sgtable,
4271 num_sgs - sgtable.nents, 0);
4272 iov_iter_revert(iter, rc);
4273 sgtable.orig_nents = sgtable.nents;
4276 cifs_sg_set_buf(&sgtable, sig, SMB2_SIGNATURE_SIZE);
4277 sg_mark_end(&sgtable.sgl[sgtable.nents - 1]);
4283 smb2_get_enc_key(struct TCP_Server_Info *server, __u64 ses_id, int enc, u8 *key)
4285 struct TCP_Server_Info *pserver;
4286 struct cifs_ses *ses;
4289 /* If server is a channel, select the primary channel */
4290 pserver = SERVER_IS_CHAN(server) ? server->primary_server : server;
4292 spin_lock(&cifs_tcp_ses_lock);
4293 list_for_each_entry(ses, &pserver->smb_ses_list, smb_ses_list) {
4294 if (ses->Suid == ses_id) {
4295 spin_lock(&ses->ses_lock);
4296 ses_enc_key = enc ? ses->smb3encryptionkey :
4297 ses->smb3decryptionkey;
4298 memcpy(key, ses_enc_key, SMB3_ENC_DEC_KEY_SIZE);
4299 spin_unlock(&ses->ses_lock);
4300 spin_unlock(&cifs_tcp_ses_lock);
4304 spin_unlock(&cifs_tcp_ses_lock);
4306 trace_smb3_ses_not_found(ses_id);
4311 * Encrypt or decrypt @rqst message. @rqst[0] has the following format:
4312 * iov[0] - transform header (associate data),
4313 * iov[1-N] - SMB2 header and pages - data to encrypt.
4314 * On success return encrypted data in iov[1-N] and pages, leave iov[0]
4318 crypt_message(struct TCP_Server_Info *server, int num_rqst,
4319 struct smb_rqst *rqst, int enc)
4321 struct smb2_transform_hdr *tr_hdr =
4322 (struct smb2_transform_hdr *)rqst[0].rq_iov[0].iov_base;
4323 unsigned int assoc_data_len = sizeof(struct smb2_transform_hdr) - 20;
4325 struct scatterlist *sg;
4326 u8 sign[SMB2_SIGNATURE_SIZE] = {};
4327 u8 key[SMB3_ENC_DEC_KEY_SIZE];
4328 struct aead_request *req;
4330 DECLARE_CRYPTO_WAIT(wait);
4331 struct crypto_aead *tfm;
4332 unsigned int crypt_len = le32_to_cpu(tr_hdr->OriginalMessageSize);
4334 size_t sensitive_size;
4336 rc = smb2_get_enc_key(server, le64_to_cpu(tr_hdr->SessionId), enc, key);
4338 cifs_server_dbg(FYI, "%s: Could not get %scryption key. sid: 0x%llx\n", __func__,
4339 enc ? "en" : "de", le64_to_cpu(tr_hdr->SessionId));
4343 rc = smb3_crypto_aead_allocate(server);
4345 cifs_server_dbg(VFS, "%s: crypto alloc failed\n", __func__);
4349 tfm = enc ? server->secmech.enc : server->secmech.dec;
4351 if ((server->cipher_type == SMB2_ENCRYPTION_AES256_CCM) ||
4352 (server->cipher_type == SMB2_ENCRYPTION_AES256_GCM))
4353 rc = crypto_aead_setkey(tfm, key, SMB3_GCM256_CRYPTKEY_SIZE);
4355 rc = crypto_aead_setkey(tfm, key, SMB3_GCM128_CRYPTKEY_SIZE);
4358 cifs_server_dbg(VFS, "%s: Failed to set aead key %d\n", __func__, rc);
4362 rc = crypto_aead_setauthsize(tfm, SMB2_SIGNATURE_SIZE);
4364 cifs_server_dbg(VFS, "%s: Failed to set authsize %d\n", __func__, rc);
4368 creq = smb2_get_aead_req(tfm, rqst, num_rqst, sign, &iv, &req, &sg,
4371 return PTR_ERR(creq);
4374 memcpy(sign, &tr_hdr->Signature, SMB2_SIGNATURE_SIZE);
4375 crypt_len += SMB2_SIGNATURE_SIZE;
4378 if ((server->cipher_type == SMB2_ENCRYPTION_AES128_GCM) ||
4379 (server->cipher_type == SMB2_ENCRYPTION_AES256_GCM))
4380 memcpy(iv, (char *)tr_hdr->Nonce, SMB3_AES_GCM_NONCE);
4383 memcpy(iv + 1, (char *)tr_hdr->Nonce, SMB3_AES_CCM_NONCE);
4386 aead_request_set_tfm(req, tfm);
4387 aead_request_set_crypt(req, sg, sg, crypt_len, iv);
4388 aead_request_set_ad(req, assoc_data_len);
4390 aead_request_set_callback(req, CRYPTO_TFM_REQ_MAY_BACKLOG,
4391 crypto_req_done, &wait);
4393 rc = crypto_wait_req(enc ? crypto_aead_encrypt(req)
4394 : crypto_aead_decrypt(req), &wait);
4397 memcpy(&tr_hdr->Signature, sign, SMB2_SIGNATURE_SIZE);
4399 kvfree_sensitive(creq, sensitive_size);
4404 * Clear a read buffer, discarding the folios which have XA_MARK_0 set.
4406 static void cifs_clear_xarray_buffer(struct xarray *buffer)
4408 struct folio *folio;
4410 XA_STATE(xas, buffer, 0);
4413 xas_for_each_marked(&xas, folio, ULONG_MAX, XA_MARK_0) {
4421 smb3_free_compound_rqst(int num_rqst, struct smb_rqst *rqst)
4425 for (i = 0; i < num_rqst; i++)
4426 if (!xa_empty(&rqst[i].rq_buffer))
4427 cifs_clear_xarray_buffer(&rqst[i].rq_buffer);
4431 * This function will initialize new_rq and encrypt the content.
4432 * The first entry, new_rq[0], only contains a single iov which contains
4433 * a smb2_transform_hdr and is pre-allocated by the caller.
4434 * This function then populates new_rq[1+] with the content from olq_rq[0+].
4436 * The end result is an array of smb_rqst structures where the first structure
4437 * only contains a single iov for the transform header which we then can pass
4438 * to crypt_message().
4440 * new_rq[0].rq_iov[0] : smb2_transform_hdr pre-allocated by the caller
4441 * new_rq[1+].rq_iov[*] == old_rq[0+].rq_iov[*] : SMB2/3 requests
4444 smb3_init_transform_rq(struct TCP_Server_Info *server, int num_rqst,
4445 struct smb_rqst *new_rq, struct smb_rqst *old_rq)
4447 struct smb2_transform_hdr *tr_hdr = new_rq[0].rq_iov[0].iov_base;
4449 unsigned int orig_len = 0;
4453 for (i = 1; i < num_rqst; i++) {
4454 struct smb_rqst *old = &old_rq[i - 1];
4455 struct smb_rqst *new = &new_rq[i];
4456 struct xarray *buffer = &new->rq_buffer;
4457 size_t size = iov_iter_count(&old->rq_iter), seg, copied = 0;
4459 orig_len += smb_rqst_len(server, old);
4460 new->rq_iov = old->rq_iov;
4461 new->rq_nvec = old->rq_nvec;
4466 unsigned int npages = DIV_ROUND_UP(size, PAGE_SIZE);
4468 for (j = 0; j < npages; j++) {
4472 page = alloc_page(GFP_KERNEL|__GFP_HIGHMEM);
4476 o = xa_store(buffer, j, page, GFP_KERNEL);
4483 xa_set_mark(buffer, j, XA_MARK_0);
4485 seg = min_t(size_t, size - copied, PAGE_SIZE);
4486 if (copy_page_from_iter(page, 0, seg, &old->rq_iter) != seg) {
4492 iov_iter_xarray(&new->rq_iter, ITER_SOURCE,
4494 new->rq_iter_size = size;
4498 /* fill the 1st iov with a transform header */
4499 fill_transform_hdr(tr_hdr, orig_len, old_rq, server->cipher_type);
4501 rc = crypt_message(server, num_rqst, new_rq, 1);
4502 cifs_dbg(FYI, "Encrypt message returned %d\n", rc);
4509 smb3_free_compound_rqst(num_rqst - 1, &new_rq[1]);
4514 smb3_is_transform_hdr(void *buf)
4516 struct smb2_transform_hdr *trhdr = buf;
4518 return trhdr->ProtocolId == SMB2_TRANSFORM_PROTO_NUM;
4522 decrypt_raw_data(struct TCP_Server_Info *server, char *buf,
4523 unsigned int buf_data_size, struct iov_iter *iter,
4527 struct smb_rqst rqst = {NULL};
4528 size_t iter_size = 0;
4531 iov[0].iov_base = buf;
4532 iov[0].iov_len = sizeof(struct smb2_transform_hdr);
4533 iov[1].iov_base = buf + sizeof(struct smb2_transform_hdr);
4534 iov[1].iov_len = buf_data_size;
4539 rqst.rq_iter = *iter;
4540 rqst.rq_iter_size = iov_iter_count(iter);
4541 iter_size = iov_iter_count(iter);
4544 rc = crypt_message(server, 1, &rqst, 0);
4545 cifs_dbg(FYI, "Decrypt message returned %d\n", rc);
4550 memmove(buf, iov[1].iov_base, buf_data_size);
4553 server->total_read = buf_data_size + iter_size;
4559 cifs_copy_pages_to_iter(struct xarray *pages, unsigned int data_size,
4560 unsigned int skip, struct iov_iter *iter)
4563 unsigned long index;
4565 xa_for_each(pages, index, page) {
4566 size_t n, len = min_t(unsigned int, PAGE_SIZE - skip, data_size);
4568 n = copy_page_to_iter(page, skip, len, iter);
4570 cifs_dbg(VFS, "%s: something went wrong\n", __func__);
4581 handle_read_data(struct TCP_Server_Info *server, struct mid_q_entry *mid,
4582 char *buf, unsigned int buf_len, struct xarray *pages,
4583 unsigned int pages_len, bool is_offloaded)
4585 unsigned int data_offset;
4586 unsigned int data_len;
4587 unsigned int cur_off;
4588 unsigned int cur_page_idx;
4589 unsigned int pad_len;
4590 struct cifs_readdata *rdata = mid->callback_data;
4591 struct smb2_hdr *shdr = (struct smb2_hdr *)buf;
4593 bool use_rdma_mr = false;
4595 if (shdr->Command != SMB2_READ) {
4596 cifs_server_dbg(VFS, "only big read responses are supported\n");
4600 if (server->ops->is_session_expired &&
4601 server->ops->is_session_expired(buf)) {
4603 cifs_reconnect(server, true);
4607 if (server->ops->is_status_pending &&
4608 server->ops->is_status_pending(buf, server))
4611 /* set up first two iov to get credits */
4612 rdata->iov[0].iov_base = buf;
4613 rdata->iov[0].iov_len = 0;
4614 rdata->iov[1].iov_base = buf;
4615 rdata->iov[1].iov_len =
4616 min_t(unsigned int, buf_len, server->vals->read_rsp_size);
4617 cifs_dbg(FYI, "0: iov_base=%p iov_len=%zu\n",
4618 rdata->iov[0].iov_base, rdata->iov[0].iov_len);
4619 cifs_dbg(FYI, "1: iov_base=%p iov_len=%zu\n",
4620 rdata->iov[1].iov_base, rdata->iov[1].iov_len);
4622 rdata->result = server->ops->map_error(buf, true);
4623 if (rdata->result != 0) {
4624 cifs_dbg(FYI, "%s: server returned error %d\n",
4625 __func__, rdata->result);
4626 /* normal error on read response */
4628 mid->mid_state = MID_RESPONSE_RECEIVED;
4630 dequeue_mid(mid, false);
4634 data_offset = server->ops->read_data_offset(buf);
4635 #ifdef CONFIG_CIFS_SMB_DIRECT
4636 use_rdma_mr = rdata->mr;
4638 data_len = server->ops->read_data_length(buf, use_rdma_mr);
4640 if (data_offset < server->vals->read_rsp_size) {
4642 * win2k8 sometimes sends an offset of 0 when the read
4643 * is beyond the EOF. Treat it as if the data starts just after
4646 cifs_dbg(FYI, "%s: data offset (%u) inside read response header\n",
4647 __func__, data_offset);
4648 data_offset = server->vals->read_rsp_size;
4649 } else if (data_offset > MAX_CIFS_SMALL_BUFFER_SIZE) {
4650 /* data_offset is beyond the end of smallbuf */
4651 cifs_dbg(FYI, "%s: data offset (%u) beyond end of smallbuf\n",
4652 __func__, data_offset);
4653 rdata->result = -EIO;
4655 mid->mid_state = MID_RESPONSE_MALFORMED;
4657 dequeue_mid(mid, rdata->result);
4661 pad_len = data_offset - server->vals->read_rsp_size;
4663 if (buf_len <= data_offset) {
4664 /* read response payload is in pages */
4665 cur_page_idx = pad_len / PAGE_SIZE;
4666 cur_off = pad_len % PAGE_SIZE;
4668 if (cur_page_idx != 0) {
4669 /* data offset is beyond the 1st page of response */
4670 cifs_dbg(FYI, "%s: data offset (%u) beyond 1st page of response\n",
4671 __func__, data_offset);
4672 rdata->result = -EIO;
4674 mid->mid_state = MID_RESPONSE_MALFORMED;
4676 dequeue_mid(mid, rdata->result);
4680 if (data_len > pages_len - pad_len) {
4681 /* data_len is corrupt -- discard frame */
4682 rdata->result = -EIO;
4684 mid->mid_state = MID_RESPONSE_MALFORMED;
4686 dequeue_mid(mid, rdata->result);
4690 /* Copy the data to the output I/O iterator. */
4691 rdata->result = cifs_copy_pages_to_iter(pages, pages_len,
4692 cur_off, &rdata->iter);
4693 if (rdata->result != 0) {
4695 mid->mid_state = MID_RESPONSE_MALFORMED;
4697 dequeue_mid(mid, rdata->result);
4700 rdata->got_bytes = pages_len;
4702 } else if (buf_len >= data_offset + data_len) {
4703 /* read response payload is in buf */
4704 WARN_ONCE(pages && !xa_empty(pages),
4705 "read data can be either in buf or in pages");
4706 length = copy_to_iter(buf + data_offset, data_len, &rdata->iter);
4709 rdata->got_bytes = data_len;
4711 /* read response payload cannot be in both buf and pages */
4712 WARN_ONCE(1, "buf can not contain only a part of read data");
4713 rdata->result = -EIO;
4715 mid->mid_state = MID_RESPONSE_MALFORMED;
4717 dequeue_mid(mid, rdata->result);
4722 mid->mid_state = MID_RESPONSE_RECEIVED;
4724 dequeue_mid(mid, false);
4728 struct smb2_decrypt_work {
4729 struct work_struct decrypt;
4730 struct TCP_Server_Info *server;
4731 struct xarray buffer;
4737 static void smb2_decrypt_offload(struct work_struct *work)
4739 struct smb2_decrypt_work *dw = container_of(work,
4740 struct smb2_decrypt_work, decrypt);
4742 struct mid_q_entry *mid;
4743 struct iov_iter iter;
4745 iov_iter_xarray(&iter, ITER_DEST, &dw->buffer, 0, dw->len);
4746 rc = decrypt_raw_data(dw->server, dw->buf, dw->server->vals->read_rsp_size,
4749 cifs_dbg(VFS, "error decrypting rc=%d\n", rc);
4753 dw->server->lstrp = jiffies;
4754 mid = smb2_find_dequeue_mid(dw->server, dw->buf);
4756 cifs_dbg(FYI, "mid not found\n");
4758 mid->decrypted = true;
4759 rc = handle_read_data(dw->server, mid, dw->buf,
4760 dw->server->vals->read_rsp_size,
4761 &dw->buffer, dw->len,
4764 #ifdef CONFIG_CIFS_STATS2
4765 mid->when_received = jiffies;
4767 if (dw->server->ops->is_network_name_deleted)
4768 dw->server->ops->is_network_name_deleted(dw->buf,
4773 spin_lock(&dw->server->srv_lock);
4774 if (dw->server->tcpStatus == CifsNeedReconnect) {
4775 spin_lock(&dw->server->mid_lock);
4776 mid->mid_state = MID_RETRY_NEEDED;
4777 spin_unlock(&dw->server->mid_lock);
4778 spin_unlock(&dw->server->srv_lock);
4781 spin_lock(&dw->server->mid_lock);
4782 mid->mid_state = MID_REQUEST_SUBMITTED;
4783 mid->mid_flags &= ~(MID_DELETED);
4784 list_add_tail(&mid->qhead,
4785 &dw->server->pending_mid_q);
4786 spin_unlock(&dw->server->mid_lock);
4787 spin_unlock(&dw->server->srv_lock);
4794 cifs_clear_xarray_buffer(&dw->buffer);
4795 cifs_small_buf_release(dw->buf);
4801 receive_encrypted_read(struct TCP_Server_Info *server, struct mid_q_entry **mid,
4805 char *buf = server->smallbuf;
4806 struct smb2_transform_hdr *tr_hdr = (struct smb2_transform_hdr *)buf;
4807 struct iov_iter iter;
4808 unsigned int len, npages;
4809 unsigned int buflen = server->pdu_size;
4812 struct smb2_decrypt_work *dw;
4814 dw = kzalloc(sizeof(struct smb2_decrypt_work), GFP_KERNEL);
4817 xa_init(&dw->buffer);
4818 INIT_WORK(&dw->decrypt, smb2_decrypt_offload);
4819 dw->server = server;
4822 len = min_t(unsigned int, buflen, server->vals->read_rsp_size +
4823 sizeof(struct smb2_transform_hdr)) - HEADER_SIZE(server) + 1;
4825 rc = cifs_read_from_socket(server, buf + HEADER_SIZE(server) - 1, len);
4828 server->total_read += rc;
4830 len = le32_to_cpu(tr_hdr->OriginalMessageSize) -
4831 server->vals->read_rsp_size;
4833 npages = DIV_ROUND_UP(len, PAGE_SIZE);
4836 for (; i < npages; i++) {
4839 page = alloc_page(GFP_KERNEL|__GFP_HIGHMEM);
4843 old = xa_store(&dw->buffer, i, page, GFP_KERNEL);
4844 if (xa_is_err(old)) {
4849 xa_set_mark(&dw->buffer, i, XA_MARK_0);
4852 iov_iter_xarray(&iter, ITER_DEST, &dw->buffer, 0, npages * PAGE_SIZE);
4854 /* Read the data into the buffer and clear excess bufferage. */
4855 rc = cifs_read_iter_from_socket(server, &iter, dw->len);
4859 server->total_read += rc;
4860 if (rc < npages * PAGE_SIZE)
4861 iov_iter_zero(npages * PAGE_SIZE - rc, &iter);
4862 iov_iter_revert(&iter, npages * PAGE_SIZE);
4863 iov_iter_truncate(&iter, dw->len);
4865 rc = cifs_discard_remaining_data(server);
4870 * For large reads, offload to different thread for better performance,
4871 * use more cores decrypting which can be expensive
4874 if ((server->min_offload) && (server->in_flight > 1) &&
4875 (server->pdu_size >= server->min_offload)) {
4876 dw->buf = server->smallbuf;
4877 server->smallbuf = (char *)cifs_small_buf_get();
4879 queue_work(decrypt_wq, &dw->decrypt);
4880 *num_mids = 0; /* worker thread takes care of finding mid */
4884 rc = decrypt_raw_data(server, buf, server->vals->read_rsp_size,
4889 *mid = smb2_find_mid(server, buf);
4891 cifs_dbg(FYI, "mid not found\n");
4893 cifs_dbg(FYI, "mid found\n");
4894 (*mid)->decrypted = true;
4895 rc = handle_read_data(server, *mid, buf,
4896 server->vals->read_rsp_size,
4897 &dw->buffer, dw->len, false);
4899 if (server->ops->is_network_name_deleted) {
4900 server->ops->is_network_name_deleted(buf,
4907 cifs_clear_xarray_buffer(&dw->buffer);
4912 cifs_discard_remaining_data(server);
4917 receive_encrypted_standard(struct TCP_Server_Info *server,
4918 struct mid_q_entry **mids, char **bufs,
4922 char *buf = server->smallbuf;
4923 struct smb2_hdr *shdr;
4924 unsigned int pdu_length = server->pdu_size;
4925 unsigned int buf_size;
4926 unsigned int next_cmd;
4927 struct mid_q_entry *mid_entry;
4929 char *next_buffer = NULL;
4933 /* switch to large buffer if too big for a small one */
4934 if (pdu_length > MAX_CIFS_SMALL_BUFFER_SIZE) {
4935 server->large_buf = true;
4936 memcpy(server->bigbuf, buf, server->total_read);
4937 buf = server->bigbuf;
4940 /* now read the rest */
4941 length = cifs_read_from_socket(server, buf + HEADER_SIZE(server) - 1,
4942 pdu_length - HEADER_SIZE(server) + 1);
4945 server->total_read += length;
4947 buf_size = pdu_length - sizeof(struct smb2_transform_hdr);
4948 length = decrypt_raw_data(server, buf, buf_size, NULL, false);
4952 next_is_large = server->large_buf;
4954 shdr = (struct smb2_hdr *)buf;
4955 next_cmd = le32_to_cpu(shdr->NextCommand);
4957 if (WARN_ON_ONCE(next_cmd > pdu_length))
4960 next_buffer = (char *)cifs_buf_get();
4962 next_buffer = (char *)cifs_small_buf_get();
4963 memcpy(next_buffer, buf + next_cmd, pdu_length - next_cmd);
4966 mid_entry = smb2_find_mid(server, buf);
4967 if (mid_entry == NULL)
4968 cifs_dbg(FYI, "mid not found\n");
4970 cifs_dbg(FYI, "mid found\n");
4971 mid_entry->decrypted = true;
4972 mid_entry->resp_buf_size = server->pdu_size;
4975 if (*num_mids >= MAX_COMPOUND) {
4976 cifs_server_dbg(VFS, "too many PDUs in compound\n");
4979 bufs[*num_mids] = buf;
4980 mids[(*num_mids)++] = mid_entry;
4982 if (mid_entry && mid_entry->handle)
4983 ret = mid_entry->handle(server, mid_entry);
4985 ret = cifs_handle_standard(server, mid_entry);
4987 if (ret == 0 && next_cmd) {
4988 pdu_length -= next_cmd;
4989 server->large_buf = next_is_large;
4991 server->bigbuf = buf = next_buffer;
4993 server->smallbuf = buf = next_buffer;
4995 } else if (ret != 0) {
4997 * ret != 0 here means that we didn't get to handle_mid() thus
4998 * server->smallbuf and server->bigbuf are still valid. We need
4999 * to free next_buffer because it is not going to be used
5003 free_rsp_buf(CIFS_LARGE_BUFFER, next_buffer);
5005 free_rsp_buf(CIFS_SMALL_BUFFER, next_buffer);
5012 smb3_receive_transform(struct TCP_Server_Info *server,
5013 struct mid_q_entry **mids, char **bufs, int *num_mids)
5015 char *buf = server->smallbuf;
5016 unsigned int pdu_length = server->pdu_size;
5017 struct smb2_transform_hdr *tr_hdr = (struct smb2_transform_hdr *)buf;
5018 unsigned int orig_len = le32_to_cpu(tr_hdr->OriginalMessageSize);
5020 if (pdu_length < sizeof(struct smb2_transform_hdr) +
5021 sizeof(struct smb2_hdr)) {
5022 cifs_server_dbg(VFS, "Transform message is too small (%u)\n",
5024 cifs_reconnect(server, true);
5025 return -ECONNABORTED;
5028 if (pdu_length < orig_len + sizeof(struct smb2_transform_hdr)) {
5029 cifs_server_dbg(VFS, "Transform message is broken\n");
5030 cifs_reconnect(server, true);
5031 return -ECONNABORTED;
5034 /* TODO: add support for compounds containing READ. */
5035 if (pdu_length > CIFSMaxBufSize + MAX_HEADER_SIZE(server)) {
5036 return receive_encrypted_read(server, &mids[0], num_mids);
5039 return receive_encrypted_standard(server, mids, bufs, num_mids);
5043 smb3_handle_read_data(struct TCP_Server_Info *server, struct mid_q_entry *mid)
5045 char *buf = server->large_buf ? server->bigbuf : server->smallbuf;
5047 return handle_read_data(server, mid, buf, server->pdu_size,
5051 static int smb2_next_header(struct TCP_Server_Info *server, char *buf,
5054 struct smb2_hdr *hdr = (struct smb2_hdr *)buf;
5055 struct smb2_transform_hdr *t_hdr = (struct smb2_transform_hdr *)buf;
5057 if (hdr->ProtocolId == SMB2_TRANSFORM_PROTO_NUM) {
5058 *noff = le32_to_cpu(t_hdr->OriginalMessageSize);
5059 if (unlikely(check_add_overflow(*noff, sizeof(*t_hdr), noff)))
5062 *noff = le32_to_cpu(hdr->NextCommand);
5064 if (unlikely(*noff && *noff < MID_HEADER_SIZE(server)))
5069 int cifs_sfu_make_node(unsigned int xid, struct inode *inode,
5070 struct dentry *dentry, struct cifs_tcon *tcon,
5071 const char *full_path, umode_t mode, dev_t dev)
5073 struct cifs_open_info_data buf = {};
5074 struct TCP_Server_Info *server = tcon->ses->server;
5075 struct cifs_open_parms oparms;
5076 struct cifs_io_parms io_parms = {};
5077 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
5078 struct cifs_fid fid;
5079 unsigned int bytes_written;
5080 struct win_dev *pdev;
5082 __u32 oplock = server->oplocks ? REQ_OPLOCK : 0;
5085 if (!S_ISCHR(mode) && !S_ISBLK(mode) && !S_ISFIFO(mode))
5088 oparms = (struct cifs_open_parms) {
5091 .desired_access = GENERIC_WRITE,
5092 .create_options = cifs_create_options(cifs_sb, CREATE_NOT_DIR |
5093 CREATE_OPTION_SPECIAL),
5094 .disposition = FILE_CREATE,
5099 rc = server->ops->open(xid, &oparms, &oplock, &buf);
5104 * BB Do not bother to decode buf since no local inode yet to put
5105 * timestamps in, but we can reuse it safely.
5107 pdev = (struct win_dev *)&buf.fi;
5108 io_parms.pid = current->tgid;
5109 io_parms.tcon = tcon;
5110 io_parms.length = sizeof(*pdev);
5111 iov[1].iov_base = pdev;
5112 iov[1].iov_len = sizeof(*pdev);
5113 if (S_ISCHR(mode)) {
5114 memcpy(pdev->type, "IntxCHR", 8);
5115 pdev->major = cpu_to_le64(MAJOR(dev));
5116 pdev->minor = cpu_to_le64(MINOR(dev));
5117 } else if (S_ISBLK(mode)) {
5118 memcpy(pdev->type, "IntxBLK", 8);
5119 pdev->major = cpu_to_le64(MAJOR(dev));
5120 pdev->minor = cpu_to_le64(MINOR(dev));
5121 } else if (S_ISFIFO(mode)) {
5122 memcpy(pdev->type, "LnxFIFO", 8);
5125 rc = server->ops->sync_write(xid, &fid, &io_parms,
5126 &bytes_written, iov, 1);
5127 server->ops->close(xid, tcon, &fid);
5129 /* FIXME: add code here to set EAs */
5130 cifs_free_open_info(&buf);
5134 static inline u64 mode_nfs_type(mode_t mode)
5136 switch (mode & S_IFMT) {
5137 case S_IFBLK: return NFS_SPECFILE_BLK;
5138 case S_IFCHR: return NFS_SPECFILE_CHR;
5139 case S_IFIFO: return NFS_SPECFILE_FIFO;
5140 case S_IFSOCK: return NFS_SPECFILE_SOCK;
5145 static int nfs_set_reparse_buf(struct reparse_posix_data *buf,
5146 mode_t mode, dev_t dev,
5154 switch ((type = mode_nfs_type(mode))) {
5155 case NFS_SPECFILE_BLK:
5156 case NFS_SPECFILE_CHR:
5157 dlen = sizeof(__le64);
5159 case NFS_SPECFILE_FIFO:
5160 case NFS_SPECFILE_SOCK:
5167 buf->ReparseTag = cpu_to_le32(IO_REPARSE_TAG_NFS);
5169 buf->InodeType = cpu_to_le64(type);
5170 buf->ReparseDataLength = cpu_to_le16(len + dlen -
5171 sizeof(struct reparse_data_buffer));
5172 *(__le64 *)buf->DataBuffer = cpu_to_le64(((u64)MAJOR(dev) << 32) |
5174 iov->iov_base = buf;
5175 iov->iov_len = len + dlen;
5179 static int nfs_make_node(unsigned int xid, struct inode *inode,
5180 struct dentry *dentry, struct cifs_tcon *tcon,
5181 const char *full_path, umode_t mode, dev_t dev)
5183 struct cifs_open_info_data data;
5184 struct reparse_posix_data *p;
5187 __u8 buf[sizeof(*p) + sizeof(__le64)];
5190 p = (struct reparse_posix_data *)buf;
5191 rc = nfs_set_reparse_buf(p, mode, dev, &iov);
5195 data = (struct cifs_open_info_data) {
5196 .reparse_point = true,
5197 .reparse = { .tag = IO_REPARSE_TAG_NFS, .posix = p, },
5200 new = smb2_get_reparse_inode(&data, inode->i_sb, xid,
5201 tcon, full_path, &iov);
5203 d_instantiate(dentry, new);
5206 cifs_free_open_info(&data);
5210 static int smb2_create_reparse_symlink(const unsigned int xid,
5211 struct inode *inode,
5212 struct dentry *dentry,
5213 struct cifs_tcon *tcon,
5214 const char *full_path,
5215 const char *symname)
5217 struct reparse_symlink_data_buffer *buf = NULL;
5218 struct cifs_open_info_data data;
5219 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
5223 char *sym, sep = CIFS_DIR_SEP(cifs_sb);
5227 sym = kstrdup(symname, GFP_KERNEL);
5231 data = (struct cifs_open_info_data) {
5232 .reparse_point = true,
5233 .reparse = { .tag = IO_REPARSE_TAG_SYMLINK, },
5234 .symlink_target = sym,
5237 convert_delimiter(sym, sep);
5238 path = cifs_convert_path_to_utf16(sym, cifs_sb);
5244 plen = 2 * UniStrnlen((wchar_t *)path, PATH_MAX);
5245 len = sizeof(*buf) + plen * 2;
5246 buf = kzalloc(len, GFP_KERNEL);
5252 buf->ReparseTag = cpu_to_le32(IO_REPARSE_TAG_SYMLINK);
5253 buf->ReparseDataLength = cpu_to_le16(len - sizeof(struct reparse_data_buffer));
5254 buf->SubstituteNameOffset = cpu_to_le16(plen);
5255 buf->SubstituteNameLength = cpu_to_le16(plen);
5256 memcpy(&buf->PathBuffer[plen], path, plen);
5257 buf->PrintNameOffset = 0;
5258 buf->PrintNameLength = cpu_to_le16(plen);
5259 memcpy(buf->PathBuffer, path, plen);
5260 buf->Flags = cpu_to_le32(*symname != '/' ? SYMLINK_FLAG_RELATIVE : 0);
5262 buf->Flags = cpu_to_le32(SYMLINK_FLAG_RELATIVE);
5264 convert_delimiter(sym, '/');
5267 new = smb2_get_reparse_inode(&data, inode->i_sb, xid,
5268 tcon, full_path, &iov);
5270 d_instantiate(dentry, new);
5275 cifs_free_open_info(&data);
5280 static int smb2_make_node(unsigned int xid, struct inode *inode,
5281 struct dentry *dentry, struct cifs_tcon *tcon,
5282 const char *full_path, umode_t mode, dev_t dev)
5284 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
5288 * Check if mounted with mount parm 'sfu' mount parm.
5289 * SFU emulation should work with all servers, but only
5290 * supports block and char device (no socket & fifo),
5291 * and was used by default in earlier versions of Windows
5293 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL) {
5294 rc = cifs_sfu_make_node(xid, inode, dentry, tcon,
5295 full_path, mode, dev);
5297 rc = nfs_make_node(xid, inode, dentry, tcon,
5298 full_path, mode, dev);
5303 #ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY
5304 struct smb_version_operations smb20_operations = {
5305 .compare_fids = smb2_compare_fids,
5306 .setup_request = smb2_setup_request,
5307 .setup_async_request = smb2_setup_async_request,
5308 .check_receive = smb2_check_receive,
5309 .add_credits = smb2_add_credits,
5310 .set_credits = smb2_set_credits,
5311 .get_credits_field = smb2_get_credits_field,
5312 .get_credits = smb2_get_credits,
5313 .wait_mtu_credits = cifs_wait_mtu_credits,
5314 .get_next_mid = smb2_get_next_mid,
5315 .revert_current_mid = smb2_revert_current_mid,
5316 .read_data_offset = smb2_read_data_offset,
5317 .read_data_length = smb2_read_data_length,
5318 .map_error = map_smb2_to_linux_error,
5319 .find_mid = smb2_find_mid,
5320 .check_message = smb2_check_message,
5321 .dump_detail = smb2_dump_detail,
5322 .clear_stats = smb2_clear_stats,
5323 .print_stats = smb2_print_stats,
5324 .is_oplock_break = smb2_is_valid_oplock_break,
5325 .handle_cancelled_mid = smb2_handle_cancelled_mid,
5326 .downgrade_oplock = smb2_downgrade_oplock,
5327 .need_neg = smb2_need_neg,
5328 .negotiate = smb2_negotiate,
5329 .negotiate_wsize = smb2_negotiate_wsize,
5330 .negotiate_rsize = smb2_negotiate_rsize,
5331 .sess_setup = SMB2_sess_setup,
5332 .logoff = SMB2_logoff,
5333 .tree_connect = SMB2_tcon,
5334 .tree_disconnect = SMB2_tdis,
5335 .qfs_tcon = smb2_qfs_tcon,
5336 .is_path_accessible = smb2_is_path_accessible,
5337 .can_echo = smb2_can_echo,
5339 .query_path_info = smb2_query_path_info,
5340 .query_reparse_point = smb2_query_reparse_point,
5341 .get_srv_inum = smb2_get_srv_inum,
5342 .query_file_info = smb2_query_file_info,
5343 .set_path_size = smb2_set_path_size,
5344 .set_file_size = smb2_set_file_size,
5345 .set_file_info = smb2_set_file_info,
5346 .set_compression = smb2_set_compression,
5347 .mkdir = smb2_mkdir,
5348 .mkdir_setinfo = smb2_mkdir_setinfo,
5349 .rmdir = smb2_rmdir,
5350 .unlink = smb2_unlink,
5351 .rename = smb2_rename_path,
5352 .create_hardlink = smb2_create_hardlink,
5353 .parse_reparse_point = smb2_parse_reparse_point,
5354 .query_mf_symlink = smb3_query_mf_symlink,
5355 .create_mf_symlink = smb3_create_mf_symlink,
5356 .create_reparse_symlink = smb2_create_reparse_symlink,
5357 .open = smb2_open_file,
5358 .set_fid = smb2_set_fid,
5359 .close = smb2_close_file,
5360 .flush = smb2_flush_file,
5361 .async_readv = smb2_async_readv,
5362 .async_writev = smb2_async_writev,
5363 .sync_read = smb2_sync_read,
5364 .sync_write = smb2_sync_write,
5365 .query_dir_first = smb2_query_dir_first,
5366 .query_dir_next = smb2_query_dir_next,
5367 .close_dir = smb2_close_dir,
5368 .calc_smb_size = smb2_calc_size,
5369 .is_status_pending = smb2_is_status_pending,
5370 .is_session_expired = smb2_is_session_expired,
5371 .oplock_response = smb2_oplock_response,
5372 .queryfs = smb2_queryfs,
5373 .mand_lock = smb2_mand_lock,
5374 .mand_unlock_range = smb2_unlock_range,
5375 .push_mand_locks = smb2_push_mandatory_locks,
5376 .get_lease_key = smb2_get_lease_key,
5377 .set_lease_key = smb2_set_lease_key,
5378 .new_lease_key = smb2_new_lease_key,
5379 .calc_signature = smb2_calc_signature,
5380 .is_read_op = smb2_is_read_op,
5381 .set_oplock_level = smb2_set_oplock_level,
5382 .create_lease_buf = smb2_create_lease_buf,
5383 .parse_lease_buf = smb2_parse_lease_buf,
5384 .copychunk_range = smb2_copychunk_range,
5385 .wp_retry_size = smb2_wp_retry_size,
5386 .dir_needs_close = smb2_dir_needs_close,
5387 .get_dfs_refer = smb2_get_dfs_refer,
5388 .select_sectype = smb2_select_sectype,
5389 #ifdef CONFIG_CIFS_XATTR
5390 .query_all_EAs = smb2_query_eas,
5391 .set_EA = smb2_set_ea,
5392 #endif /* CIFS_XATTR */
5393 .get_acl = get_smb2_acl,
5394 .get_acl_by_fid = get_smb2_acl_by_fid,
5395 .set_acl = set_smb2_acl,
5396 .next_header = smb2_next_header,
5397 .ioctl_query_info = smb2_ioctl_query_info,
5398 .make_node = smb2_make_node,
5399 .fiemap = smb3_fiemap,
5400 .llseek = smb3_llseek,
5401 .is_status_io_timeout = smb2_is_status_io_timeout,
5402 .is_network_name_deleted = smb2_is_network_name_deleted,
5404 #endif /* CIFS_ALLOW_INSECURE_LEGACY */
5406 struct smb_version_operations smb21_operations = {
5407 .compare_fids = smb2_compare_fids,
5408 .setup_request = smb2_setup_request,
5409 .setup_async_request = smb2_setup_async_request,
5410 .check_receive = smb2_check_receive,
5411 .add_credits = smb2_add_credits,
5412 .set_credits = smb2_set_credits,
5413 .get_credits_field = smb2_get_credits_field,
5414 .get_credits = smb2_get_credits,
5415 .wait_mtu_credits = smb2_wait_mtu_credits,
5416 .adjust_credits = smb2_adjust_credits,
5417 .get_next_mid = smb2_get_next_mid,
5418 .revert_current_mid = smb2_revert_current_mid,
5419 .read_data_offset = smb2_read_data_offset,
5420 .read_data_length = smb2_read_data_length,
5421 .map_error = map_smb2_to_linux_error,
5422 .find_mid = smb2_find_mid,
5423 .check_message = smb2_check_message,
5424 .dump_detail = smb2_dump_detail,
5425 .clear_stats = smb2_clear_stats,
5426 .print_stats = smb2_print_stats,
5427 .is_oplock_break = smb2_is_valid_oplock_break,
5428 .handle_cancelled_mid = smb2_handle_cancelled_mid,
5429 .downgrade_oplock = smb2_downgrade_oplock,
5430 .need_neg = smb2_need_neg,
5431 .negotiate = smb2_negotiate,
5432 .negotiate_wsize = smb2_negotiate_wsize,
5433 .negotiate_rsize = smb2_negotiate_rsize,
5434 .sess_setup = SMB2_sess_setup,
5435 .logoff = SMB2_logoff,
5436 .tree_connect = SMB2_tcon,
5437 .tree_disconnect = SMB2_tdis,
5438 .qfs_tcon = smb2_qfs_tcon,
5439 .is_path_accessible = smb2_is_path_accessible,
5440 .can_echo = smb2_can_echo,
5442 .query_path_info = smb2_query_path_info,
5443 .query_reparse_point = smb2_query_reparse_point,
5444 .get_srv_inum = smb2_get_srv_inum,
5445 .query_file_info = smb2_query_file_info,
5446 .set_path_size = smb2_set_path_size,
5447 .set_file_size = smb2_set_file_size,
5448 .set_file_info = smb2_set_file_info,
5449 .set_compression = smb2_set_compression,
5450 .mkdir = smb2_mkdir,
5451 .mkdir_setinfo = smb2_mkdir_setinfo,
5452 .rmdir = smb2_rmdir,
5453 .unlink = smb2_unlink,
5454 .rename = smb2_rename_path,
5455 .create_hardlink = smb2_create_hardlink,
5456 .parse_reparse_point = smb2_parse_reparse_point,
5457 .query_mf_symlink = smb3_query_mf_symlink,
5458 .create_mf_symlink = smb3_create_mf_symlink,
5459 .create_reparse_symlink = smb2_create_reparse_symlink,
5460 .open = smb2_open_file,
5461 .set_fid = smb2_set_fid,
5462 .close = smb2_close_file,
5463 .flush = smb2_flush_file,
5464 .async_readv = smb2_async_readv,
5465 .async_writev = smb2_async_writev,
5466 .sync_read = smb2_sync_read,
5467 .sync_write = smb2_sync_write,
5468 .query_dir_first = smb2_query_dir_first,
5469 .query_dir_next = smb2_query_dir_next,
5470 .close_dir = smb2_close_dir,
5471 .calc_smb_size = smb2_calc_size,
5472 .is_status_pending = smb2_is_status_pending,
5473 .is_session_expired = smb2_is_session_expired,
5474 .oplock_response = smb2_oplock_response,
5475 .queryfs = smb2_queryfs,
5476 .mand_lock = smb2_mand_lock,
5477 .mand_unlock_range = smb2_unlock_range,
5478 .push_mand_locks = smb2_push_mandatory_locks,
5479 .get_lease_key = smb2_get_lease_key,
5480 .set_lease_key = smb2_set_lease_key,
5481 .new_lease_key = smb2_new_lease_key,
5482 .calc_signature = smb2_calc_signature,
5483 .is_read_op = smb21_is_read_op,
5484 .set_oplock_level = smb21_set_oplock_level,
5485 .create_lease_buf = smb2_create_lease_buf,
5486 .parse_lease_buf = smb2_parse_lease_buf,
5487 .copychunk_range = smb2_copychunk_range,
5488 .wp_retry_size = smb2_wp_retry_size,
5489 .dir_needs_close = smb2_dir_needs_close,
5490 .enum_snapshots = smb3_enum_snapshots,
5491 .notify = smb3_notify,
5492 .get_dfs_refer = smb2_get_dfs_refer,
5493 .select_sectype = smb2_select_sectype,
5494 #ifdef CONFIG_CIFS_XATTR
5495 .query_all_EAs = smb2_query_eas,
5496 .set_EA = smb2_set_ea,
5497 #endif /* CIFS_XATTR */
5498 .get_acl = get_smb2_acl,
5499 .get_acl_by_fid = get_smb2_acl_by_fid,
5500 .set_acl = set_smb2_acl,
5501 .next_header = smb2_next_header,
5502 .ioctl_query_info = smb2_ioctl_query_info,
5503 .make_node = smb2_make_node,
5504 .fiemap = smb3_fiemap,
5505 .llseek = smb3_llseek,
5506 .is_status_io_timeout = smb2_is_status_io_timeout,
5507 .is_network_name_deleted = smb2_is_network_name_deleted,
5510 struct smb_version_operations smb30_operations = {
5511 .compare_fids = smb2_compare_fids,
5512 .setup_request = smb2_setup_request,
5513 .setup_async_request = smb2_setup_async_request,
5514 .check_receive = smb2_check_receive,
5515 .add_credits = smb2_add_credits,
5516 .set_credits = smb2_set_credits,
5517 .get_credits_field = smb2_get_credits_field,
5518 .get_credits = smb2_get_credits,
5519 .wait_mtu_credits = smb2_wait_mtu_credits,
5520 .adjust_credits = smb2_adjust_credits,
5521 .get_next_mid = smb2_get_next_mid,
5522 .revert_current_mid = smb2_revert_current_mid,
5523 .read_data_offset = smb2_read_data_offset,
5524 .read_data_length = smb2_read_data_length,
5525 .map_error = map_smb2_to_linux_error,
5526 .find_mid = smb2_find_mid,
5527 .check_message = smb2_check_message,
5528 .dump_detail = smb2_dump_detail,
5529 .clear_stats = smb2_clear_stats,
5530 .print_stats = smb2_print_stats,
5531 .dump_share_caps = smb2_dump_share_caps,
5532 .is_oplock_break = smb2_is_valid_oplock_break,
5533 .handle_cancelled_mid = smb2_handle_cancelled_mid,
5534 .downgrade_oplock = smb3_downgrade_oplock,
5535 .need_neg = smb2_need_neg,
5536 .negotiate = smb2_negotiate,
5537 .negotiate_wsize = smb3_negotiate_wsize,
5538 .negotiate_rsize = smb3_negotiate_rsize,
5539 .sess_setup = SMB2_sess_setup,
5540 .logoff = SMB2_logoff,
5541 .tree_connect = SMB2_tcon,
5542 .tree_disconnect = SMB2_tdis,
5543 .qfs_tcon = smb3_qfs_tcon,
5544 .query_server_interfaces = SMB3_request_interfaces,
5545 .is_path_accessible = smb2_is_path_accessible,
5546 .can_echo = smb2_can_echo,
5548 .query_path_info = smb2_query_path_info,
5549 /* WSL tags introduced long after smb2.1, enable for SMB3, 3.11 only */
5550 .query_reparse_point = smb2_query_reparse_point,
5551 .get_srv_inum = smb2_get_srv_inum,
5552 .query_file_info = smb2_query_file_info,
5553 .set_path_size = smb2_set_path_size,
5554 .set_file_size = smb2_set_file_size,
5555 .set_file_info = smb2_set_file_info,
5556 .set_compression = smb2_set_compression,
5557 .mkdir = smb2_mkdir,
5558 .mkdir_setinfo = smb2_mkdir_setinfo,
5559 .rmdir = smb2_rmdir,
5560 .unlink = smb2_unlink,
5561 .rename = smb2_rename_path,
5562 .create_hardlink = smb2_create_hardlink,
5563 .parse_reparse_point = smb2_parse_reparse_point,
5564 .query_mf_symlink = smb3_query_mf_symlink,
5565 .create_mf_symlink = smb3_create_mf_symlink,
5566 .create_reparse_symlink = smb2_create_reparse_symlink,
5567 .open = smb2_open_file,
5568 .set_fid = smb2_set_fid,
5569 .close = smb2_close_file,
5570 .close_getattr = smb2_close_getattr,
5571 .flush = smb2_flush_file,
5572 .async_readv = smb2_async_readv,
5573 .async_writev = smb2_async_writev,
5574 .sync_read = smb2_sync_read,
5575 .sync_write = smb2_sync_write,
5576 .query_dir_first = smb2_query_dir_first,
5577 .query_dir_next = smb2_query_dir_next,
5578 .close_dir = smb2_close_dir,
5579 .calc_smb_size = smb2_calc_size,
5580 .is_status_pending = smb2_is_status_pending,
5581 .is_session_expired = smb2_is_session_expired,
5582 .oplock_response = smb2_oplock_response,
5583 .queryfs = smb2_queryfs,
5584 .mand_lock = smb2_mand_lock,
5585 .mand_unlock_range = smb2_unlock_range,
5586 .push_mand_locks = smb2_push_mandatory_locks,
5587 .get_lease_key = smb2_get_lease_key,
5588 .set_lease_key = smb2_set_lease_key,
5589 .new_lease_key = smb2_new_lease_key,
5590 .generate_signingkey = generate_smb30signingkey,
5591 .calc_signature = smb3_calc_signature,
5592 .set_integrity = smb3_set_integrity,
5593 .is_read_op = smb21_is_read_op,
5594 .set_oplock_level = smb3_set_oplock_level,
5595 .create_lease_buf = smb3_create_lease_buf,
5596 .parse_lease_buf = smb3_parse_lease_buf,
5597 .copychunk_range = smb2_copychunk_range,
5598 .duplicate_extents = smb2_duplicate_extents,
5599 .validate_negotiate = smb3_validate_negotiate,
5600 .wp_retry_size = smb2_wp_retry_size,
5601 .dir_needs_close = smb2_dir_needs_close,
5602 .fallocate = smb3_fallocate,
5603 .enum_snapshots = smb3_enum_snapshots,
5604 .notify = smb3_notify,
5605 .init_transform_rq = smb3_init_transform_rq,
5606 .is_transform_hdr = smb3_is_transform_hdr,
5607 .receive_transform = smb3_receive_transform,
5608 .get_dfs_refer = smb2_get_dfs_refer,
5609 .select_sectype = smb2_select_sectype,
5610 #ifdef CONFIG_CIFS_XATTR
5611 .query_all_EAs = smb2_query_eas,
5612 .set_EA = smb2_set_ea,
5613 #endif /* CIFS_XATTR */
5614 .get_acl = get_smb2_acl,
5615 .get_acl_by_fid = get_smb2_acl_by_fid,
5616 .set_acl = set_smb2_acl,
5617 .next_header = smb2_next_header,
5618 .ioctl_query_info = smb2_ioctl_query_info,
5619 .make_node = smb2_make_node,
5620 .fiemap = smb3_fiemap,
5621 .llseek = smb3_llseek,
5622 .is_status_io_timeout = smb2_is_status_io_timeout,
5623 .is_network_name_deleted = smb2_is_network_name_deleted,
5626 struct smb_version_operations smb311_operations = {
5627 .compare_fids = smb2_compare_fids,
5628 .setup_request = smb2_setup_request,
5629 .setup_async_request = smb2_setup_async_request,
5630 .check_receive = smb2_check_receive,
5631 .add_credits = smb2_add_credits,
5632 .set_credits = smb2_set_credits,
5633 .get_credits_field = smb2_get_credits_field,
5634 .get_credits = smb2_get_credits,
5635 .wait_mtu_credits = smb2_wait_mtu_credits,
5636 .adjust_credits = smb2_adjust_credits,
5637 .get_next_mid = smb2_get_next_mid,
5638 .revert_current_mid = smb2_revert_current_mid,
5639 .read_data_offset = smb2_read_data_offset,
5640 .read_data_length = smb2_read_data_length,
5641 .map_error = map_smb2_to_linux_error,
5642 .find_mid = smb2_find_mid,
5643 .check_message = smb2_check_message,
5644 .dump_detail = smb2_dump_detail,
5645 .clear_stats = smb2_clear_stats,
5646 .print_stats = smb2_print_stats,
5647 .dump_share_caps = smb2_dump_share_caps,
5648 .is_oplock_break = smb2_is_valid_oplock_break,
5649 .handle_cancelled_mid = smb2_handle_cancelled_mid,
5650 .downgrade_oplock = smb3_downgrade_oplock,
5651 .need_neg = smb2_need_neg,
5652 .negotiate = smb2_negotiate,
5653 .negotiate_wsize = smb3_negotiate_wsize,
5654 .negotiate_rsize = smb3_negotiate_rsize,
5655 .sess_setup = SMB2_sess_setup,
5656 .logoff = SMB2_logoff,
5657 .tree_connect = SMB2_tcon,
5658 .tree_disconnect = SMB2_tdis,
5659 .qfs_tcon = smb3_qfs_tcon,
5660 .query_server_interfaces = SMB3_request_interfaces,
5661 .is_path_accessible = smb2_is_path_accessible,
5662 .can_echo = smb2_can_echo,
5664 .query_path_info = smb2_query_path_info,
5665 .query_reparse_point = smb2_query_reparse_point,
5666 .get_srv_inum = smb2_get_srv_inum,
5667 .query_file_info = smb2_query_file_info,
5668 .set_path_size = smb2_set_path_size,
5669 .set_file_size = smb2_set_file_size,
5670 .set_file_info = smb2_set_file_info,
5671 .set_compression = smb2_set_compression,
5672 .mkdir = smb2_mkdir,
5673 .mkdir_setinfo = smb2_mkdir_setinfo,
5674 .posix_mkdir = smb311_posix_mkdir,
5675 .rmdir = smb2_rmdir,
5676 .unlink = smb2_unlink,
5677 .rename = smb2_rename_path,
5678 .create_hardlink = smb2_create_hardlink,
5679 .parse_reparse_point = smb2_parse_reparse_point,
5680 .query_mf_symlink = smb3_query_mf_symlink,
5681 .create_mf_symlink = smb3_create_mf_symlink,
5682 .create_reparse_symlink = smb2_create_reparse_symlink,
5683 .open = smb2_open_file,
5684 .set_fid = smb2_set_fid,
5685 .close = smb2_close_file,
5686 .close_getattr = smb2_close_getattr,
5687 .flush = smb2_flush_file,
5688 .async_readv = smb2_async_readv,
5689 .async_writev = smb2_async_writev,
5690 .sync_read = smb2_sync_read,
5691 .sync_write = smb2_sync_write,
5692 .query_dir_first = smb2_query_dir_first,
5693 .query_dir_next = smb2_query_dir_next,
5694 .close_dir = smb2_close_dir,
5695 .calc_smb_size = smb2_calc_size,
5696 .is_status_pending = smb2_is_status_pending,
5697 .is_session_expired = smb2_is_session_expired,
5698 .oplock_response = smb2_oplock_response,
5699 .queryfs = smb311_queryfs,
5700 .mand_lock = smb2_mand_lock,
5701 .mand_unlock_range = smb2_unlock_range,
5702 .push_mand_locks = smb2_push_mandatory_locks,
5703 .get_lease_key = smb2_get_lease_key,
5704 .set_lease_key = smb2_set_lease_key,
5705 .new_lease_key = smb2_new_lease_key,
5706 .generate_signingkey = generate_smb311signingkey,
5707 .calc_signature = smb3_calc_signature,
5708 .set_integrity = smb3_set_integrity,
5709 .is_read_op = smb21_is_read_op,
5710 .set_oplock_level = smb3_set_oplock_level,
5711 .create_lease_buf = smb3_create_lease_buf,
5712 .parse_lease_buf = smb3_parse_lease_buf,
5713 .copychunk_range = smb2_copychunk_range,
5714 .duplicate_extents = smb2_duplicate_extents,
5715 /* .validate_negotiate = smb3_validate_negotiate, */ /* not used in 3.11 */
5716 .wp_retry_size = smb2_wp_retry_size,
5717 .dir_needs_close = smb2_dir_needs_close,
5718 .fallocate = smb3_fallocate,
5719 .enum_snapshots = smb3_enum_snapshots,
5720 .notify = smb3_notify,
5721 .init_transform_rq = smb3_init_transform_rq,
5722 .is_transform_hdr = smb3_is_transform_hdr,
5723 .receive_transform = smb3_receive_transform,
5724 .get_dfs_refer = smb2_get_dfs_refer,
5725 .select_sectype = smb2_select_sectype,
5726 #ifdef CONFIG_CIFS_XATTR
5727 .query_all_EAs = smb2_query_eas,
5728 .set_EA = smb2_set_ea,
5729 #endif /* CIFS_XATTR */
5730 .get_acl = get_smb2_acl,
5731 .get_acl_by_fid = get_smb2_acl_by_fid,
5732 .set_acl = set_smb2_acl,
5733 .next_header = smb2_next_header,
5734 .ioctl_query_info = smb2_ioctl_query_info,
5735 .make_node = smb2_make_node,
5736 .fiemap = smb3_fiemap,
5737 .llseek = smb3_llseek,
5738 .is_status_io_timeout = smb2_is_status_io_timeout,
5739 .is_network_name_deleted = smb2_is_network_name_deleted,
5742 #ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY
5743 struct smb_version_values smb20_values = {
5744 .version_string = SMB20_VERSION_STRING,
5745 .protocol_id = SMB20_PROT_ID,
5746 .req_capabilities = 0, /* MBZ */
5747 .large_lock_type = 0,
5748 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE,
5749 .shared_lock_type = SMB2_LOCKFLAG_SHARED,
5750 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
5751 .header_size = sizeof(struct smb2_hdr),
5752 .header_preamble_size = 0,
5753 .max_header_size = MAX_SMB2_HDR_SIZE,
5754 .read_rsp_size = sizeof(struct smb2_read_rsp),
5755 .lock_cmd = SMB2_LOCK,
5757 .cap_nt_find = SMB2_NT_FIND,
5758 .cap_large_files = SMB2_LARGE_FILES,
5759 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
5760 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
5761 .create_lease_size = sizeof(struct create_lease),
5763 #endif /* ALLOW_INSECURE_LEGACY */
5765 struct smb_version_values smb21_values = {
5766 .version_string = SMB21_VERSION_STRING,
5767 .protocol_id = SMB21_PROT_ID,
5768 .req_capabilities = 0, /* MBZ on negotiate req until SMB3 dialect */
5769 .large_lock_type = 0,
5770 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE,
5771 .shared_lock_type = SMB2_LOCKFLAG_SHARED,
5772 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
5773 .header_size = sizeof(struct smb2_hdr),
5774 .header_preamble_size = 0,
5775 .max_header_size = MAX_SMB2_HDR_SIZE,
5776 .read_rsp_size = sizeof(struct smb2_read_rsp),
5777 .lock_cmd = SMB2_LOCK,
5779 .cap_nt_find = SMB2_NT_FIND,
5780 .cap_large_files = SMB2_LARGE_FILES,
5781 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
5782 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
5783 .create_lease_size = sizeof(struct create_lease),
5786 struct smb_version_values smb3any_values = {
5787 .version_string = SMB3ANY_VERSION_STRING,
5788 .protocol_id = SMB302_PROT_ID, /* doesn't matter, send protocol array */
5789 .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,
5790 .large_lock_type = 0,
5791 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE,
5792 .shared_lock_type = SMB2_LOCKFLAG_SHARED,
5793 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
5794 .header_size = sizeof(struct smb2_hdr),
5795 .header_preamble_size = 0,
5796 .max_header_size = MAX_SMB2_HDR_SIZE,
5797 .read_rsp_size = sizeof(struct smb2_read_rsp),
5798 .lock_cmd = SMB2_LOCK,
5800 .cap_nt_find = SMB2_NT_FIND,
5801 .cap_large_files = SMB2_LARGE_FILES,
5802 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
5803 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
5804 .create_lease_size = sizeof(struct create_lease_v2),
5807 struct smb_version_values smbdefault_values = {
5808 .version_string = SMBDEFAULT_VERSION_STRING,
5809 .protocol_id = SMB302_PROT_ID, /* doesn't matter, send protocol array */
5810 .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,
5811 .large_lock_type = 0,
5812 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE,
5813 .shared_lock_type = SMB2_LOCKFLAG_SHARED,
5814 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
5815 .header_size = sizeof(struct smb2_hdr),
5816 .header_preamble_size = 0,
5817 .max_header_size = MAX_SMB2_HDR_SIZE,
5818 .read_rsp_size = sizeof(struct smb2_read_rsp),
5819 .lock_cmd = SMB2_LOCK,
5821 .cap_nt_find = SMB2_NT_FIND,
5822 .cap_large_files = SMB2_LARGE_FILES,
5823 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
5824 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
5825 .create_lease_size = sizeof(struct create_lease_v2),
5828 struct smb_version_values smb30_values = {
5829 .version_string = SMB30_VERSION_STRING,
5830 .protocol_id = SMB30_PROT_ID,
5831 .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,
5832 .large_lock_type = 0,
5833 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE,
5834 .shared_lock_type = SMB2_LOCKFLAG_SHARED,
5835 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
5836 .header_size = sizeof(struct smb2_hdr),
5837 .header_preamble_size = 0,
5838 .max_header_size = MAX_SMB2_HDR_SIZE,
5839 .read_rsp_size = sizeof(struct smb2_read_rsp),
5840 .lock_cmd = SMB2_LOCK,
5842 .cap_nt_find = SMB2_NT_FIND,
5843 .cap_large_files = SMB2_LARGE_FILES,
5844 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
5845 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
5846 .create_lease_size = sizeof(struct create_lease_v2),
5849 struct smb_version_values smb302_values = {
5850 .version_string = SMB302_VERSION_STRING,
5851 .protocol_id = SMB302_PROT_ID,
5852 .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,
5853 .large_lock_type = 0,
5854 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE,
5855 .shared_lock_type = SMB2_LOCKFLAG_SHARED,
5856 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
5857 .header_size = sizeof(struct smb2_hdr),
5858 .header_preamble_size = 0,
5859 .max_header_size = MAX_SMB2_HDR_SIZE,
5860 .read_rsp_size = sizeof(struct smb2_read_rsp),
5861 .lock_cmd = SMB2_LOCK,
5863 .cap_nt_find = SMB2_NT_FIND,
5864 .cap_large_files = SMB2_LARGE_FILES,
5865 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
5866 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
5867 .create_lease_size = sizeof(struct create_lease_v2),
5870 struct smb_version_values smb311_values = {
5871 .version_string = SMB311_VERSION_STRING,
5872 .protocol_id = SMB311_PROT_ID,
5873 .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,
5874 .large_lock_type = 0,
5875 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE,
5876 .shared_lock_type = SMB2_LOCKFLAG_SHARED,
5877 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
5878 .header_size = sizeof(struct smb2_hdr),
5879 .header_preamble_size = 0,
5880 .max_header_size = MAX_SMB2_HDR_SIZE,
5881 .read_rsp_size = sizeof(struct smb2_read_rsp),
5882 .lock_cmd = SMB2_LOCK,
5884 .cap_nt_find = SMB2_NT_FIND,
5885 .cap_large_files = SMB2_LARGE_FILES,
5886 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
5887 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
5888 .create_lease_size = sizeof(struct create_lease_v2),