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 do kref_put to remove
599 * any unused ifaces. ifaces in use will be removed
600 * when the last user calls a kref_put on it
602 list_for_each_entry_safe(iface, niface, &ses->iface_list,
604 iface->is_active = 0;
605 kref_put(&iface->refcount, release_iface);
608 spin_unlock(&ses->iface_lock);
611 * Samba server e.g. can return an empty interface list in some cases,
612 * which would only be a problem if we were requesting multichannel
614 if (bytes_left == 0) {
615 /* avoid spamming logs every 10 minutes, so log only in mount */
616 if ((ses->chan_max > 1) && in_mount)
618 "multichannel not available\n"
619 "Empty network interface list returned by server %s\n",
620 ses->server->hostname);
625 while (bytes_left >= sizeof(*p)) {
626 memset(&tmp_iface, 0, sizeof(tmp_iface));
627 tmp_iface.speed = le64_to_cpu(p->LinkSpeed);
628 tmp_iface.rdma_capable = le32_to_cpu(p->Capability & RDMA_CAPABLE) ? 1 : 0;
629 tmp_iface.rss_capable = le32_to_cpu(p->Capability & RSS_CAPABLE) ? 1 : 0;
633 * The kernel and wire socket structures have the same
634 * layout and use network byte order but make the
635 * conversion explicit in case either one changes.
638 addr4 = (struct sockaddr_in *)&tmp_iface.sockaddr;
639 p4 = (struct iface_info_ipv4 *)p->Buffer;
640 addr4->sin_family = AF_INET;
641 memcpy(&addr4->sin_addr, &p4->IPv4Address, 4);
643 /* [MS-SMB2] 2.2.32.5.1.1 Clients MUST ignore these */
644 addr4->sin_port = cpu_to_be16(CIFS_PORT);
646 cifs_dbg(FYI, "%s: ipv4 %pI4\n", __func__,
650 addr6 = (struct sockaddr_in6 *)&tmp_iface.sockaddr;
651 p6 = (struct iface_info_ipv6 *)p->Buffer;
652 addr6->sin6_family = AF_INET6;
653 memcpy(&addr6->sin6_addr, &p6->IPv6Address, 16);
655 /* [MS-SMB2] 2.2.32.5.1.2 Clients MUST ignore these */
656 addr6->sin6_flowinfo = 0;
657 addr6->sin6_scope_id = 0;
658 addr6->sin6_port = cpu_to_be16(CIFS_PORT);
660 cifs_dbg(FYI, "%s: ipv6 %pI6\n", __func__,
665 "%s: skipping unsupported socket family\n",
671 * The iface_list is assumed to be sorted by speed.
672 * Check if the new interface exists in that list.
673 * NEVER change iface. it could be in use.
674 * Add a new one instead
676 spin_lock(&ses->iface_lock);
677 list_for_each_entry_safe(iface, niface, &ses->iface_list,
679 ret = iface_cmp(iface, &tmp_iface);
681 /* just get a ref so that it doesn't get picked/freed */
682 iface->is_active = 1;
683 kref_get(&iface->refcount);
685 spin_unlock(&ses->iface_lock);
687 } else if (ret < 0) {
688 /* all remaining ifaces are slower */
689 kref_get(&iface->refcount);
693 spin_unlock(&ses->iface_lock);
695 /* no match. insert the entry in the list */
696 info = kmalloc(sizeof(struct cifs_server_iface),
702 memcpy(info, &tmp_iface, sizeof(tmp_iface));
704 /* add this new entry to the list */
705 kref_init(&info->refcount);
708 cifs_dbg(FYI, "%s: adding iface %zu\n", __func__, ses->iface_count);
709 cifs_dbg(FYI, "%s: speed %zu bps\n", __func__, info->speed);
710 cifs_dbg(FYI, "%s: capabilities 0x%08x\n", __func__,
711 le32_to_cpu(p->Capability));
713 spin_lock(&ses->iface_lock);
714 if (!list_entry_is_head(iface, &ses->iface_list, iface_head)) {
715 list_add_tail(&info->iface_head, &iface->iface_head);
716 kref_put(&iface->refcount, release_iface);
718 list_add_tail(&info->iface_head, &ses->iface_list);
721 spin_unlock(&ses->iface_lock);
722 ses->iface_last_update = jiffies;
725 next = le32_to_cpu(p->Next);
727 bytes_left -= sizeof(*p);
730 p = (struct network_interface_info_ioctl_rsp *)((u8 *)p+next);
735 cifs_dbg(VFS, "%s: malformed interface info\n", __func__);
740 /* Azure rounds the buffer size up 8, to a 16 byte boundary */
741 if ((bytes_left > 8) || p->Next)
742 cifs_dbg(VFS, "%s: incomplete interface info\n", __func__);
745 if (!ses->iface_count) {
755 SMB3_request_interfaces(const unsigned int xid, struct cifs_tcon *tcon, bool in_mount)
758 unsigned int ret_data_len = 0;
759 struct network_interface_info_ioctl_rsp *out_buf = NULL;
760 struct cifs_ses *ses = tcon->ses;
761 struct TCP_Server_Info *pserver;
763 /* do not query too frequently */
764 if (ses->iface_last_update &&
765 time_before(jiffies, ses->iface_last_update +
766 (SMB_INTERFACE_POLL_INTERVAL * HZ)))
769 rc = SMB2_ioctl(xid, tcon, NO_FILE_ID, NO_FILE_ID,
770 FSCTL_QUERY_NETWORK_INTERFACE_INFO,
771 NULL /* no data input */, 0 /* no data input */,
772 CIFSMaxBufSize, (char **)&out_buf, &ret_data_len);
773 if (rc == -EOPNOTSUPP) {
775 "server does not support query network interfaces\n");
777 } else if (rc != 0) {
778 cifs_tcon_dbg(VFS, "error %d on ioctl to get interface list\n", rc);
782 rc = parse_server_interfaces(out_buf, ret_data_len, ses, in_mount);
786 /* check if iface is still active */
787 pserver = ses->chans[0].server;
788 if (pserver && !cifs_chan_is_iface_active(ses, pserver))
789 cifs_chan_update_iface(ses, pserver);
797 smb3_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon,
798 struct cifs_sb_info *cifs_sb)
801 __le16 srch_path = 0; /* Null - open root of share */
802 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
803 struct cifs_open_parms oparms;
805 struct cached_fid *cfid = NULL;
807 oparms = (struct cifs_open_parms) {
810 .desired_access = FILE_READ_ATTRIBUTES,
811 .disposition = FILE_OPEN,
812 .create_options = cifs_create_options(cifs_sb, 0),
816 rc = open_cached_dir(xid, tcon, "", cifs_sb, false, &cfid);
818 memcpy(&fid, &cfid->fid, sizeof(struct cifs_fid));
820 rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL,
825 SMB3_request_interfaces(xid, tcon, true /* called during mount */);
827 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
828 FS_ATTRIBUTE_INFORMATION);
829 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
830 FS_DEVICE_INFORMATION);
831 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
832 FS_VOLUME_INFORMATION);
833 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
834 FS_SECTOR_SIZE_INFORMATION); /* SMB3 specific */
836 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
838 close_cached_dir(cfid);
842 smb2_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon,
843 struct cifs_sb_info *cifs_sb)
846 __le16 srch_path = 0; /* Null - open root of share */
847 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
848 struct cifs_open_parms oparms;
851 oparms = (struct cifs_open_parms) {
854 .desired_access = FILE_READ_ATTRIBUTES,
855 .disposition = FILE_OPEN,
856 .create_options = cifs_create_options(cifs_sb, 0),
860 rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL,
865 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
866 FS_ATTRIBUTE_INFORMATION);
867 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
868 FS_DEVICE_INFORMATION);
869 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
873 smb2_is_path_accessible(const unsigned int xid, struct cifs_tcon *tcon,
874 struct cifs_sb_info *cifs_sb, const char *full_path)
877 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
878 int err_buftype = CIFS_NO_BUFFER;
879 struct cifs_open_parms oparms;
880 struct kvec err_iov = {};
882 struct cached_fid *cfid;
886 rc = open_cached_dir(xid, tcon, full_path, cifs_sb, true, &cfid);
888 if (cfid->has_lease) {
889 close_cached_dir(cfid);
892 close_cached_dir(cfid);
895 utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb);
899 oparms = (struct cifs_open_parms) {
902 .desired_access = FILE_READ_ATTRIBUTES,
903 .disposition = FILE_OPEN,
904 .create_options = cifs_create_options(cifs_sb, 0),
908 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL,
909 &err_iov, &err_buftype);
911 struct smb2_hdr *hdr = err_iov.iov_base;
913 if (unlikely(!hdr || err_buftype == CIFS_NO_BUFFER))
916 if (rc != -EREMOTE && hdr->Status == STATUS_OBJECT_NAME_INVALID) {
917 rc2 = cifs_inval_name_dfs_link_error(xid, tcon, cifs_sb,
926 if (rc == -EREMOTE && IS_ENABLED(CONFIG_CIFS_DFS_UPCALL) && cifs_sb &&
927 (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_DFS))
932 rc = SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
935 free_rsp_buf(err_buftype, err_iov.iov_base);
940 static int smb2_get_srv_inum(const unsigned int xid, struct cifs_tcon *tcon,
941 struct cifs_sb_info *cifs_sb, const char *full_path,
942 u64 *uniqueid, struct cifs_open_info_data *data)
944 *uniqueid = le64_to_cpu(data->fi.IndexNumber);
948 static int smb2_query_file_info(const unsigned int xid, struct cifs_tcon *tcon,
949 struct cifsFileInfo *cfile, struct cifs_open_info_data *data)
951 struct cifs_fid *fid = &cfile->fid;
953 if (cfile->symlink_target) {
954 data->symlink_target = kstrdup(cfile->symlink_target, GFP_KERNEL);
955 if (!data->symlink_target)
958 return SMB2_query_info(xid, tcon, fid->persistent_fid, fid->volatile_fid, &data->fi);
961 #ifdef CONFIG_CIFS_XATTR
963 move_smb2_ea_to_cifs(char *dst, size_t dst_size,
964 struct smb2_file_full_ea_info *src, size_t src_size,
965 const unsigned char *ea_name)
968 unsigned int ea_name_len = ea_name ? strlen(ea_name) : 0;
970 size_t buf_size = dst_size;
971 size_t name_len, value_len, user_name_len;
973 while (src_size > 0) {
974 name_len = (size_t)src->ea_name_length;
975 value_len = (size_t)le16_to_cpu(src->ea_value_length);
980 if (src_size < 8 + name_len + 1 + value_len) {
981 cifs_dbg(FYI, "EA entry goes beyond length of list\n");
986 name = &src->ea_data[0];
987 value = &src->ea_data[src->ea_name_length + 1];
990 if (ea_name_len == name_len &&
991 memcmp(ea_name, name, name_len) == 0) {
995 if (dst_size < value_len) {
999 memcpy(dst, value, value_len);
1003 /* 'user.' plus a terminating null */
1004 user_name_len = 5 + 1 + name_len;
1006 if (buf_size == 0) {
1007 /* skip copy - calc size only */
1008 rc += user_name_len;
1009 } else if (dst_size >= user_name_len) {
1010 dst_size -= user_name_len;
1011 memcpy(dst, "user.", 5);
1013 memcpy(dst, src->ea_data, name_len);
1017 rc += user_name_len;
1019 /* stop before overrun buffer */
1025 if (!src->next_entry_offset)
1028 if (src_size < le32_to_cpu(src->next_entry_offset)) {
1029 /* stop before overrun buffer */
1033 src_size -= le32_to_cpu(src->next_entry_offset);
1034 src = (void *)((char *)src +
1035 le32_to_cpu(src->next_entry_offset));
1038 /* didn't find the named attribute */
1047 smb2_query_eas(const unsigned int xid, struct cifs_tcon *tcon,
1048 const unsigned char *path, const unsigned char *ea_name,
1049 char *ea_data, size_t buf_size,
1050 struct cifs_sb_info *cifs_sb)
1053 struct kvec rsp_iov = {NULL, 0};
1054 int buftype = CIFS_NO_BUFFER;
1055 struct smb2_query_info_rsp *rsp;
1056 struct smb2_file_full_ea_info *info = NULL;
1058 rc = smb2_query_info_compound(xid, tcon, path,
1060 FILE_FULL_EA_INFORMATION,
1063 MAX_SMB2_CREATE_RESPONSE_SIZE -
1064 MAX_SMB2_CLOSE_RESPONSE_SIZE,
1065 &rsp_iov, &buftype, cifs_sb);
1068 * If ea_name is NULL (listxattr) and there are no EAs,
1069 * return 0 as it's not an error. Otherwise, the specified
1070 * ea_name was not found.
1072 if (!ea_name && rc == -ENODATA)
1077 rsp = (struct smb2_query_info_rsp *)rsp_iov.iov_base;
1078 rc = smb2_validate_iov(le16_to_cpu(rsp->OutputBufferOffset),
1079 le32_to_cpu(rsp->OutputBufferLength),
1081 sizeof(struct smb2_file_full_ea_info));
1085 info = (struct smb2_file_full_ea_info *)(
1086 le16_to_cpu(rsp->OutputBufferOffset) + (char *)rsp);
1087 rc = move_smb2_ea_to_cifs(ea_data, buf_size, info,
1088 le32_to_cpu(rsp->OutputBufferLength), ea_name);
1091 free_rsp_buf(buftype, rsp_iov.iov_base);
1096 smb2_set_ea(const unsigned int xid, struct cifs_tcon *tcon,
1097 const char *path, const char *ea_name, const void *ea_value,
1098 const __u16 ea_value_len, const struct nls_table *nls_codepage,
1099 struct cifs_sb_info *cifs_sb)
1101 struct smb2_compound_vars *vars;
1102 struct cifs_ses *ses = tcon->ses;
1103 struct TCP_Server_Info *server = cifs_pick_channel(ses);
1104 struct smb_rqst *rqst;
1105 struct kvec *rsp_iov;
1106 __le16 *utf16_path = NULL;
1107 int ea_name_len = strlen(ea_name);
1108 int flags = CIFS_CP_CREATE_CLOSE_OP;
1110 int resp_buftype[3];
1111 struct cifs_open_parms oparms;
1112 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
1113 struct cifs_fid fid;
1114 unsigned int size[1];
1116 struct smb2_file_full_ea_info *ea = NULL;
1117 struct smb2_query_info_rsp *rsp;
1118 int rc, used_len = 0;
1120 if (smb3_encryption_required(tcon))
1121 flags |= CIFS_TRANSFORM_REQ;
1123 if (ea_name_len > 255)
1126 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
1130 resp_buftype[0] = resp_buftype[1] = resp_buftype[2] = CIFS_NO_BUFFER;
1131 vars = kzalloc(sizeof(*vars), GFP_KERNEL);
1137 rsp_iov = vars->rsp_iov;
1139 if (ses->server->ops->query_all_EAs) {
1141 rc = ses->server->ops->query_all_EAs(xid, tcon, path,
1147 /* If we are adding a attribute we should first check
1148 * if there will be enough space available to store
1149 * the new EA. If not we should not add it since we
1150 * would not be able to even read the EAs back.
1152 rc = smb2_query_info_compound(xid, tcon, path,
1154 FILE_FULL_EA_INFORMATION,
1157 MAX_SMB2_CREATE_RESPONSE_SIZE -
1158 MAX_SMB2_CLOSE_RESPONSE_SIZE,
1159 &rsp_iov[1], &resp_buftype[1], cifs_sb);
1161 rsp = (struct smb2_query_info_rsp *)rsp_iov[1].iov_base;
1162 used_len = le32_to_cpu(rsp->OutputBufferLength);
1164 free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base);
1165 resp_buftype[1] = CIFS_NO_BUFFER;
1166 memset(&rsp_iov[1], 0, sizeof(rsp_iov[1]));
1169 /* Use a fudge factor of 256 bytes in case we collide
1170 * with a different set_EAs command.
1172 if (CIFSMaxBufSize - MAX_SMB2_CREATE_RESPONSE_SIZE -
1173 MAX_SMB2_CLOSE_RESPONSE_SIZE - 256 <
1174 used_len + ea_name_len + ea_value_len + 1) {
1182 rqst[0].rq_iov = vars->open_iov;
1183 rqst[0].rq_nvec = SMB2_CREATE_IOV_SIZE;
1185 oparms = (struct cifs_open_parms) {
1188 .desired_access = FILE_WRITE_EA,
1189 .disposition = FILE_OPEN,
1190 .create_options = cifs_create_options(cifs_sb, 0),
1194 rc = SMB2_open_init(tcon, server,
1195 &rqst[0], &oplock, &oparms, utf16_path);
1198 smb2_set_next_command(tcon, &rqst[0]);
1202 rqst[1].rq_iov = vars->si_iov;
1203 rqst[1].rq_nvec = 1;
1205 len = sizeof(*ea) + ea_name_len + ea_value_len + 1;
1206 ea = kzalloc(len, GFP_KERNEL);
1212 ea->ea_name_length = ea_name_len;
1213 ea->ea_value_length = cpu_to_le16(ea_value_len);
1214 memcpy(ea->ea_data, ea_name, ea_name_len + 1);
1215 memcpy(ea->ea_data + ea_name_len + 1, ea_value, ea_value_len);
1220 rc = SMB2_set_info_init(tcon, server,
1221 &rqst[1], COMPOUND_FID,
1222 COMPOUND_FID, current->tgid,
1223 FILE_FULL_EA_INFORMATION,
1224 SMB2_O_INFO_FILE, 0, data, size);
1227 smb2_set_next_command(tcon, &rqst[1]);
1228 smb2_set_related(&rqst[1]);
1231 rqst[2].rq_iov = &vars->close_iov;
1232 rqst[2].rq_nvec = 1;
1233 rc = SMB2_close_init(tcon, server,
1234 &rqst[2], COMPOUND_FID, COMPOUND_FID, false);
1237 smb2_set_related(&rqst[2]);
1239 rc = compound_send_recv(xid, ses, server,
1241 resp_buftype, rsp_iov);
1242 /* no need to bump num_remote_opens because handle immediately closed */
1246 SMB2_open_free(&rqst[0]);
1247 SMB2_set_info_free(&rqst[1]);
1248 SMB2_close_free(&rqst[2]);
1249 free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base);
1250 free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base);
1251 free_rsp_buf(resp_buftype[2], rsp_iov[2].iov_base);
1260 smb2_can_echo(struct TCP_Server_Info *server)
1262 return server->echoes;
1266 smb2_clear_stats(struct cifs_tcon *tcon)
1270 for (i = 0; i < NUMBER_OF_SMB2_COMMANDS; i++) {
1271 atomic_set(&tcon->stats.smb2_stats.smb2_com_sent[i], 0);
1272 atomic_set(&tcon->stats.smb2_stats.smb2_com_failed[i], 0);
1277 smb2_dump_share_caps(struct seq_file *m, struct cifs_tcon *tcon)
1279 seq_puts(m, "\n\tShare Capabilities:");
1280 if (tcon->capabilities & SMB2_SHARE_CAP_DFS)
1281 seq_puts(m, " DFS,");
1282 if (tcon->capabilities & SMB2_SHARE_CAP_CONTINUOUS_AVAILABILITY)
1283 seq_puts(m, " CONTINUOUS AVAILABILITY,");
1284 if (tcon->capabilities & SMB2_SHARE_CAP_SCALEOUT)
1285 seq_puts(m, " SCALEOUT,");
1286 if (tcon->capabilities & SMB2_SHARE_CAP_CLUSTER)
1287 seq_puts(m, " CLUSTER,");
1288 if (tcon->capabilities & SMB2_SHARE_CAP_ASYMMETRIC)
1289 seq_puts(m, " ASYMMETRIC,");
1290 if (tcon->capabilities == 0)
1291 seq_puts(m, " None");
1292 if (tcon->ss_flags & SSINFO_FLAGS_ALIGNED_DEVICE)
1293 seq_puts(m, " Aligned,");
1294 if (tcon->ss_flags & SSINFO_FLAGS_PARTITION_ALIGNED_ON_DEVICE)
1295 seq_puts(m, " Partition Aligned,");
1296 if (tcon->ss_flags & SSINFO_FLAGS_NO_SEEK_PENALTY)
1297 seq_puts(m, " SSD,");
1298 if (tcon->ss_flags & SSINFO_FLAGS_TRIM_ENABLED)
1299 seq_puts(m, " TRIM-support,");
1301 seq_printf(m, "\tShare Flags: 0x%x", tcon->share_flags);
1302 seq_printf(m, "\n\ttid: 0x%x", tcon->tid);
1303 if (tcon->perf_sector_size)
1304 seq_printf(m, "\tOptimal sector size: 0x%x",
1305 tcon->perf_sector_size);
1306 seq_printf(m, "\tMaximal Access: 0x%x", tcon->maximal_access);
1310 smb2_print_stats(struct seq_file *m, struct cifs_tcon *tcon)
1312 atomic_t *sent = tcon->stats.smb2_stats.smb2_com_sent;
1313 atomic_t *failed = tcon->stats.smb2_stats.smb2_com_failed;
1316 * Can't display SMB2_NEGOTIATE, SESSION_SETUP, LOGOFF, CANCEL and ECHO
1317 * totals (requests sent) since those SMBs are per-session not per tcon
1319 seq_printf(m, "\nBytes read: %llu Bytes written: %llu",
1320 (long long)(tcon->bytes_read),
1321 (long long)(tcon->bytes_written));
1322 seq_printf(m, "\nOpen files: %d total (local), %d open on server",
1323 atomic_read(&tcon->num_local_opens),
1324 atomic_read(&tcon->num_remote_opens));
1325 seq_printf(m, "\nTreeConnects: %d total %d failed",
1326 atomic_read(&sent[SMB2_TREE_CONNECT_HE]),
1327 atomic_read(&failed[SMB2_TREE_CONNECT_HE]));
1328 seq_printf(m, "\nTreeDisconnects: %d total %d failed",
1329 atomic_read(&sent[SMB2_TREE_DISCONNECT_HE]),
1330 atomic_read(&failed[SMB2_TREE_DISCONNECT_HE]));
1331 seq_printf(m, "\nCreates: %d total %d failed",
1332 atomic_read(&sent[SMB2_CREATE_HE]),
1333 atomic_read(&failed[SMB2_CREATE_HE]));
1334 seq_printf(m, "\nCloses: %d total %d failed",
1335 atomic_read(&sent[SMB2_CLOSE_HE]),
1336 atomic_read(&failed[SMB2_CLOSE_HE]));
1337 seq_printf(m, "\nFlushes: %d total %d failed",
1338 atomic_read(&sent[SMB2_FLUSH_HE]),
1339 atomic_read(&failed[SMB2_FLUSH_HE]));
1340 seq_printf(m, "\nReads: %d total %d failed",
1341 atomic_read(&sent[SMB2_READ_HE]),
1342 atomic_read(&failed[SMB2_READ_HE]));
1343 seq_printf(m, "\nWrites: %d total %d failed",
1344 atomic_read(&sent[SMB2_WRITE_HE]),
1345 atomic_read(&failed[SMB2_WRITE_HE]));
1346 seq_printf(m, "\nLocks: %d total %d failed",
1347 atomic_read(&sent[SMB2_LOCK_HE]),
1348 atomic_read(&failed[SMB2_LOCK_HE]));
1349 seq_printf(m, "\nIOCTLs: %d total %d failed",
1350 atomic_read(&sent[SMB2_IOCTL_HE]),
1351 atomic_read(&failed[SMB2_IOCTL_HE]));
1352 seq_printf(m, "\nQueryDirectories: %d total %d failed",
1353 atomic_read(&sent[SMB2_QUERY_DIRECTORY_HE]),
1354 atomic_read(&failed[SMB2_QUERY_DIRECTORY_HE]));
1355 seq_printf(m, "\nChangeNotifies: %d total %d failed",
1356 atomic_read(&sent[SMB2_CHANGE_NOTIFY_HE]),
1357 atomic_read(&failed[SMB2_CHANGE_NOTIFY_HE]));
1358 seq_printf(m, "\nQueryInfos: %d total %d failed",
1359 atomic_read(&sent[SMB2_QUERY_INFO_HE]),
1360 atomic_read(&failed[SMB2_QUERY_INFO_HE]));
1361 seq_printf(m, "\nSetInfos: %d total %d failed",
1362 atomic_read(&sent[SMB2_SET_INFO_HE]),
1363 atomic_read(&failed[SMB2_SET_INFO_HE]));
1364 seq_printf(m, "\nOplockBreaks: %d sent %d failed",
1365 atomic_read(&sent[SMB2_OPLOCK_BREAK_HE]),
1366 atomic_read(&failed[SMB2_OPLOCK_BREAK_HE]));
1370 smb2_set_fid(struct cifsFileInfo *cfile, struct cifs_fid *fid, __u32 oplock)
1372 struct cifsInodeInfo *cinode = CIFS_I(d_inode(cfile->dentry));
1373 struct TCP_Server_Info *server = tlink_tcon(cfile->tlink)->ses->server;
1375 cfile->fid.persistent_fid = fid->persistent_fid;
1376 cfile->fid.volatile_fid = fid->volatile_fid;
1377 cfile->fid.access = fid->access;
1378 #ifdef CONFIG_CIFS_DEBUG2
1379 cfile->fid.mid = fid->mid;
1380 #endif /* CIFS_DEBUG2 */
1381 server->ops->set_oplock_level(cinode, oplock, fid->epoch,
1383 cinode->can_cache_brlcks = CIFS_CACHE_WRITE(cinode);
1384 memcpy(cfile->fid.create_guid, fid->create_guid, 16);
1388 smb2_close_file(const unsigned int xid, struct cifs_tcon *tcon,
1389 struct cifs_fid *fid)
1391 SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
1395 smb2_close_getattr(const unsigned int xid, struct cifs_tcon *tcon,
1396 struct cifsFileInfo *cfile)
1398 struct smb2_file_network_open_info file_inf;
1399 struct inode *inode;
1402 rc = __SMB2_close(xid, tcon, cfile->fid.persistent_fid,
1403 cfile->fid.volatile_fid, &file_inf);
1407 inode = d_inode(cfile->dentry);
1409 spin_lock(&inode->i_lock);
1410 CIFS_I(inode)->time = jiffies;
1412 /* Creation time should not need to be updated on close */
1413 if (file_inf.LastWriteTime)
1414 inode_set_mtime_to_ts(inode,
1415 cifs_NTtimeToUnix(file_inf.LastWriteTime));
1416 if (file_inf.ChangeTime)
1417 inode_set_ctime_to_ts(inode,
1418 cifs_NTtimeToUnix(file_inf.ChangeTime));
1419 if (file_inf.LastAccessTime)
1420 inode_set_atime_to_ts(inode,
1421 cifs_NTtimeToUnix(file_inf.LastAccessTime));
1424 * i_blocks is not related to (i_size / i_blksize),
1425 * but instead 512 byte (2**9) size is required for
1426 * calculating num blocks.
1428 if (le64_to_cpu(file_inf.AllocationSize) > 4096)
1430 (512 - 1 + le64_to_cpu(file_inf.AllocationSize)) >> 9;
1432 /* End of file and Attributes should not have to be updated on close */
1433 spin_unlock(&inode->i_lock);
1437 SMB2_request_res_key(const unsigned int xid, struct cifs_tcon *tcon,
1438 u64 persistent_fid, u64 volatile_fid,
1439 struct copychunk_ioctl *pcchunk)
1442 unsigned int ret_data_len;
1443 struct resume_key_req *res_key;
1445 rc = SMB2_ioctl(xid, tcon, persistent_fid, volatile_fid,
1446 FSCTL_SRV_REQUEST_RESUME_KEY, NULL, 0 /* no input */,
1447 CIFSMaxBufSize, (char **)&res_key, &ret_data_len);
1449 if (rc == -EOPNOTSUPP) {
1450 pr_warn_once("Server share %s does not support copy range\n", tcon->tree_name);
1451 goto req_res_key_exit;
1453 cifs_tcon_dbg(VFS, "refcpy ioctl error %d getting resume key\n", rc);
1454 goto req_res_key_exit;
1456 if (ret_data_len < sizeof(struct resume_key_req)) {
1457 cifs_tcon_dbg(VFS, "Invalid refcopy resume key length\n");
1459 goto req_res_key_exit;
1461 memcpy(pcchunk->SourceKey, res_key->ResumeKey, COPY_CHUNK_RES_KEY_SIZE);
1469 smb2_ioctl_query_info(const unsigned int xid,
1470 struct cifs_tcon *tcon,
1471 struct cifs_sb_info *cifs_sb,
1472 __le16 *path, int is_dir,
1475 struct smb2_compound_vars *vars;
1476 struct smb_rqst *rqst;
1477 struct kvec *rsp_iov;
1478 struct cifs_ses *ses = tcon->ses;
1479 struct TCP_Server_Info *server = cifs_pick_channel(ses);
1480 char __user *arg = (char __user *)p;
1481 struct smb_query_info qi;
1482 struct smb_query_info __user *pqi;
1484 int flags = CIFS_CP_CREATE_CLOSE_OP;
1485 struct smb2_query_info_rsp *qi_rsp = NULL;
1486 struct smb2_ioctl_rsp *io_rsp = NULL;
1487 void *buffer = NULL;
1488 int resp_buftype[3];
1489 struct cifs_open_parms oparms;
1490 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
1491 struct cifs_fid fid;
1492 unsigned int size[2];
1494 int create_options = is_dir ? CREATE_NOT_FILE : CREATE_NOT_DIR;
1495 void (*free_req1_func)(struct smb_rqst *r);
1497 vars = kzalloc(sizeof(*vars), GFP_ATOMIC);
1500 rqst = &vars->rqst[0];
1501 rsp_iov = &vars->rsp_iov[0];
1503 resp_buftype[0] = resp_buftype[1] = resp_buftype[2] = CIFS_NO_BUFFER;
1505 if (copy_from_user(&qi, arg, sizeof(struct smb_query_info))) {
1509 if (qi.output_buffer_length > 1024) {
1514 if (!ses || !server) {
1519 if (smb3_encryption_required(tcon))
1520 flags |= CIFS_TRANSFORM_REQ;
1522 if (qi.output_buffer_length) {
1523 buffer = memdup_user(arg + sizeof(struct smb_query_info), qi.output_buffer_length);
1524 if (IS_ERR(buffer)) {
1525 rc = PTR_ERR(buffer);
1531 rqst[0].rq_iov = &vars->open_iov[0];
1532 rqst[0].rq_nvec = SMB2_CREATE_IOV_SIZE;
1534 oparms = (struct cifs_open_parms) {
1536 .disposition = FILE_OPEN,
1537 .create_options = cifs_create_options(cifs_sb, create_options),
1541 if (qi.flags & PASSTHRU_FSCTL) {
1542 switch (qi.info_type & FSCTL_DEVICE_ACCESS_MASK) {
1543 case FSCTL_DEVICE_ACCESS_FILE_READ_WRITE_ACCESS:
1544 oparms.desired_access = FILE_READ_DATA | FILE_WRITE_DATA | FILE_READ_ATTRIBUTES | SYNCHRONIZE;
1546 case FSCTL_DEVICE_ACCESS_FILE_ANY_ACCESS:
1547 oparms.desired_access = GENERIC_ALL;
1549 case FSCTL_DEVICE_ACCESS_FILE_READ_ACCESS:
1550 oparms.desired_access = GENERIC_READ;
1552 case FSCTL_DEVICE_ACCESS_FILE_WRITE_ACCESS:
1553 oparms.desired_access = GENERIC_WRITE;
1556 } else if (qi.flags & PASSTHRU_SET_INFO) {
1557 oparms.desired_access = GENERIC_WRITE;
1559 oparms.desired_access = FILE_READ_ATTRIBUTES | READ_CONTROL;
1562 rc = SMB2_open_init(tcon, server,
1563 &rqst[0], &oplock, &oparms, path);
1565 goto free_output_buffer;
1566 smb2_set_next_command(tcon, &rqst[0]);
1569 if (qi.flags & PASSTHRU_FSCTL) {
1570 /* Can eventually relax perm check since server enforces too */
1571 if (!capable(CAP_SYS_ADMIN)) {
1575 rqst[1].rq_iov = &vars->io_iov[0];
1576 rqst[1].rq_nvec = SMB2_IOCTL_IOV_SIZE;
1578 rc = SMB2_ioctl_init(tcon, server, &rqst[1], COMPOUND_FID, COMPOUND_FID,
1579 qi.info_type, buffer, qi.output_buffer_length,
1580 CIFSMaxBufSize - MAX_SMB2_CREATE_RESPONSE_SIZE -
1581 MAX_SMB2_CLOSE_RESPONSE_SIZE);
1582 free_req1_func = SMB2_ioctl_free;
1583 } else if (qi.flags == PASSTHRU_SET_INFO) {
1584 /* Can eventually relax perm check since server enforces too */
1585 if (!capable(CAP_SYS_ADMIN)) {
1589 if (qi.output_buffer_length < 8) {
1593 rqst[1].rq_iov = vars->si_iov;
1594 rqst[1].rq_nvec = 1;
1596 /* MS-FSCC 2.4.13 FileEndOfFileInformation */
1600 rc = SMB2_set_info_init(tcon, server, &rqst[1], COMPOUND_FID, COMPOUND_FID,
1601 current->tgid, FILE_END_OF_FILE_INFORMATION,
1602 SMB2_O_INFO_FILE, 0, data, size);
1603 free_req1_func = SMB2_set_info_free;
1604 } else if (qi.flags == PASSTHRU_QUERY_INFO) {
1605 rqst[1].rq_iov = &vars->qi_iov;
1606 rqst[1].rq_nvec = 1;
1608 rc = SMB2_query_info_init(tcon, server,
1609 &rqst[1], COMPOUND_FID,
1610 COMPOUND_FID, qi.file_info_class,
1611 qi.info_type, qi.additional_information,
1612 qi.input_buffer_length,
1613 qi.output_buffer_length, buffer);
1614 free_req1_func = SMB2_query_info_free;
1615 } else { /* unknown flags */
1616 cifs_tcon_dbg(VFS, "Invalid passthru query flags: 0x%x\n",
1623 smb2_set_next_command(tcon, &rqst[1]);
1624 smb2_set_related(&rqst[1]);
1627 rqst[2].rq_iov = &vars->close_iov;
1628 rqst[2].rq_nvec = 1;
1630 rc = SMB2_close_init(tcon, server,
1631 &rqst[2], COMPOUND_FID, COMPOUND_FID, false);
1634 smb2_set_related(&rqst[2]);
1636 rc = compound_send_recv(xid, ses, server,
1638 resp_buftype, rsp_iov);
1642 /* No need to bump num_remote_opens since handle immediately closed */
1643 if (qi.flags & PASSTHRU_FSCTL) {
1644 pqi = (struct smb_query_info __user *)arg;
1645 io_rsp = (struct smb2_ioctl_rsp *)rsp_iov[1].iov_base;
1646 if (le32_to_cpu(io_rsp->OutputCount) < qi.input_buffer_length)
1647 qi.input_buffer_length = le32_to_cpu(io_rsp->OutputCount);
1648 if (qi.input_buffer_length > 0 &&
1649 le32_to_cpu(io_rsp->OutputOffset) + qi.input_buffer_length
1650 > rsp_iov[1].iov_len) {
1655 if (copy_to_user(&pqi->input_buffer_length,
1656 &qi.input_buffer_length,
1657 sizeof(qi.input_buffer_length))) {
1662 if (copy_to_user((void __user *)pqi + sizeof(struct smb_query_info),
1663 (const void *)io_rsp + le32_to_cpu(io_rsp->OutputOffset),
1664 qi.input_buffer_length))
1667 pqi = (struct smb_query_info __user *)arg;
1668 qi_rsp = (struct smb2_query_info_rsp *)rsp_iov[1].iov_base;
1669 if (le32_to_cpu(qi_rsp->OutputBufferLength) < qi.input_buffer_length)
1670 qi.input_buffer_length = le32_to_cpu(qi_rsp->OutputBufferLength);
1671 if (copy_to_user(&pqi->input_buffer_length,
1672 &qi.input_buffer_length,
1673 sizeof(qi.input_buffer_length))) {
1678 if (copy_to_user(pqi + 1, qi_rsp->Buffer,
1679 qi.input_buffer_length))
1684 free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base);
1685 free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base);
1686 free_rsp_buf(resp_buftype[2], rsp_iov[2].iov_base);
1687 SMB2_close_free(&rqst[2]);
1689 free_req1_func(&rqst[1]);
1691 SMB2_open_free(&rqst[0]);
1700 smb2_copychunk_range(const unsigned int xid,
1701 struct cifsFileInfo *srcfile,
1702 struct cifsFileInfo *trgtfile, u64 src_off,
1703 u64 len, u64 dest_off)
1706 unsigned int ret_data_len;
1707 struct copychunk_ioctl *pcchunk;
1708 struct copychunk_ioctl_rsp *retbuf = NULL;
1709 struct cifs_tcon *tcon;
1710 int chunks_copied = 0;
1711 bool chunk_sizes_updated = false;
1712 ssize_t bytes_written, total_bytes_written = 0;
1714 pcchunk = kmalloc(sizeof(struct copychunk_ioctl), GFP_KERNEL);
1715 if (pcchunk == NULL)
1718 cifs_dbg(FYI, "%s: about to call request res key\n", __func__);
1719 /* Request a key from the server to identify the source of the copy */
1720 rc = SMB2_request_res_key(xid, tlink_tcon(srcfile->tlink),
1721 srcfile->fid.persistent_fid,
1722 srcfile->fid.volatile_fid, pcchunk);
1724 /* Note: request_res_key sets res_key null only if rc !=0 */
1728 /* For now array only one chunk long, will make more flexible later */
1729 pcchunk->ChunkCount = cpu_to_le32(1);
1730 pcchunk->Reserved = 0;
1731 pcchunk->Reserved2 = 0;
1733 tcon = tlink_tcon(trgtfile->tlink);
1736 pcchunk->SourceOffset = cpu_to_le64(src_off);
1737 pcchunk->TargetOffset = cpu_to_le64(dest_off);
1739 cpu_to_le32(min_t(u64, len, tcon->max_bytes_chunk));
1741 /* Request server copy to target from src identified by key */
1744 rc = SMB2_ioctl(xid, tcon, trgtfile->fid.persistent_fid,
1745 trgtfile->fid.volatile_fid, FSCTL_SRV_COPYCHUNK_WRITE,
1746 (char *)pcchunk, sizeof(struct copychunk_ioctl),
1747 CIFSMaxBufSize, (char **)&retbuf, &ret_data_len);
1750 sizeof(struct copychunk_ioctl_rsp)) {
1751 cifs_tcon_dbg(VFS, "Invalid cchunk response size\n");
1755 if (retbuf->TotalBytesWritten == 0) {
1756 cifs_dbg(FYI, "no bytes copied\n");
1761 * Check if server claimed to write more than we asked
1763 if (le32_to_cpu(retbuf->TotalBytesWritten) >
1764 le32_to_cpu(pcchunk->Length)) {
1765 cifs_tcon_dbg(VFS, "Invalid copy chunk response\n");
1769 if (le32_to_cpu(retbuf->ChunksWritten) != 1) {
1770 cifs_tcon_dbg(VFS, "Invalid num chunks written\n");
1776 bytes_written = le32_to_cpu(retbuf->TotalBytesWritten);
1777 src_off += bytes_written;
1778 dest_off += bytes_written;
1779 len -= bytes_written;
1780 total_bytes_written += bytes_written;
1782 cifs_dbg(FYI, "Chunks %d PartialChunk %d Total %zu\n",
1783 le32_to_cpu(retbuf->ChunksWritten),
1784 le32_to_cpu(retbuf->ChunkBytesWritten),
1786 } else if (rc == -EINVAL) {
1787 if (ret_data_len != sizeof(struct copychunk_ioctl_rsp))
1790 cifs_dbg(FYI, "MaxChunks %d BytesChunk %d MaxCopy %d\n",
1791 le32_to_cpu(retbuf->ChunksWritten),
1792 le32_to_cpu(retbuf->ChunkBytesWritten),
1793 le32_to_cpu(retbuf->TotalBytesWritten));
1796 * Check if this is the first request using these sizes,
1797 * (ie check if copy succeed once with original sizes
1798 * and check if the server gave us different sizes after
1799 * we already updated max sizes on previous request).
1800 * if not then why is the server returning an error now
1802 if ((chunks_copied != 0) || chunk_sizes_updated)
1805 /* Check that server is not asking us to grow size */
1806 if (le32_to_cpu(retbuf->ChunkBytesWritten) <
1807 tcon->max_bytes_chunk)
1808 tcon->max_bytes_chunk =
1809 le32_to_cpu(retbuf->ChunkBytesWritten);
1811 goto cchunk_out; /* server gave us bogus size */
1813 /* No need to change MaxChunks since already set to 1 */
1814 chunk_sizes_updated = true;
1825 return total_bytes_written;
1829 smb2_flush_file(const unsigned int xid, struct cifs_tcon *tcon,
1830 struct cifs_fid *fid)
1832 return SMB2_flush(xid, tcon, fid->persistent_fid, fid->volatile_fid);
1836 smb2_read_data_offset(char *buf)
1838 struct smb2_read_rsp *rsp = (struct smb2_read_rsp *)buf;
1840 return rsp->DataOffset;
1844 smb2_read_data_length(char *buf, bool in_remaining)
1846 struct smb2_read_rsp *rsp = (struct smb2_read_rsp *)buf;
1849 return le32_to_cpu(rsp->DataRemaining);
1851 return le32_to_cpu(rsp->DataLength);
1856 smb2_sync_read(const unsigned int xid, struct cifs_fid *pfid,
1857 struct cifs_io_parms *parms, unsigned int *bytes_read,
1858 char **buf, int *buf_type)
1860 parms->persistent_fid = pfid->persistent_fid;
1861 parms->volatile_fid = pfid->volatile_fid;
1862 return SMB2_read(xid, parms, bytes_read, buf, buf_type);
1866 smb2_sync_write(const unsigned int xid, struct cifs_fid *pfid,
1867 struct cifs_io_parms *parms, unsigned int *written,
1868 struct kvec *iov, unsigned long nr_segs)
1871 parms->persistent_fid = pfid->persistent_fid;
1872 parms->volatile_fid = pfid->volatile_fid;
1873 return SMB2_write(xid, parms, written, iov, nr_segs);
1876 /* Set or clear the SPARSE_FILE attribute based on value passed in setsparse */
1877 static bool smb2_set_sparse(const unsigned int xid, struct cifs_tcon *tcon,
1878 struct cifsFileInfo *cfile, struct inode *inode, __u8 setsparse)
1880 struct cifsInodeInfo *cifsi;
1883 cifsi = CIFS_I(inode);
1885 /* if file already sparse don't bother setting sparse again */
1886 if ((cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) && setsparse)
1887 return true; /* already sparse */
1889 if (!(cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) && !setsparse)
1890 return true; /* already not sparse */
1893 * Can't check for sparse support on share the usual way via the
1894 * FS attribute info (FILE_SUPPORTS_SPARSE_FILES) on the share
1895 * since Samba server doesn't set the flag on the share, yet
1896 * supports the set sparse FSCTL and returns sparse correctly
1897 * in the file attributes. If we fail setting sparse though we
1898 * mark that server does not support sparse files for this share
1899 * to avoid repeatedly sending the unsupported fsctl to server
1900 * if the file is repeatedly extended.
1902 if (tcon->broken_sparse_sup)
1905 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
1906 cfile->fid.volatile_fid, FSCTL_SET_SPARSE,
1907 &setsparse, 1, CIFSMaxBufSize, NULL, NULL);
1909 tcon->broken_sparse_sup = true;
1910 cifs_dbg(FYI, "set sparse rc = %d\n", rc);
1915 cifsi->cifsAttrs |= FILE_ATTRIBUTE_SPARSE_FILE;
1917 cifsi->cifsAttrs &= (~FILE_ATTRIBUTE_SPARSE_FILE);
1923 smb2_set_file_size(const unsigned int xid, struct cifs_tcon *tcon,
1924 struct cifsFileInfo *cfile, __u64 size, bool set_alloc)
1926 __le64 eof = cpu_to_le64(size);
1927 struct inode *inode;
1930 * If extending file more than one page make sparse. Many Linux fs
1931 * make files sparse by default when extending via ftruncate
1933 inode = d_inode(cfile->dentry);
1935 if (!set_alloc && (size > inode->i_size + 8192)) {
1936 __u8 set_sparse = 1;
1938 /* whether set sparse succeeds or not, extend the file */
1939 smb2_set_sparse(xid, tcon, cfile, inode, set_sparse);
1942 return SMB2_set_eof(xid, tcon, cfile->fid.persistent_fid,
1943 cfile->fid.volatile_fid, cfile->pid, &eof);
1947 smb2_duplicate_extents(const unsigned int xid,
1948 struct cifsFileInfo *srcfile,
1949 struct cifsFileInfo *trgtfile, u64 src_off,
1950 u64 len, u64 dest_off)
1953 unsigned int ret_data_len;
1954 struct inode *inode;
1955 struct duplicate_extents_to_file dup_ext_buf;
1956 struct cifs_tcon *tcon = tlink_tcon(trgtfile->tlink);
1958 /* server fileays advertise duplicate extent support with this flag */
1959 if ((le32_to_cpu(tcon->fsAttrInfo.Attributes) &
1960 FILE_SUPPORTS_BLOCK_REFCOUNTING) == 0)
1963 dup_ext_buf.VolatileFileHandle = srcfile->fid.volatile_fid;
1964 dup_ext_buf.PersistentFileHandle = srcfile->fid.persistent_fid;
1965 dup_ext_buf.SourceFileOffset = cpu_to_le64(src_off);
1966 dup_ext_buf.TargetFileOffset = cpu_to_le64(dest_off);
1967 dup_ext_buf.ByteCount = cpu_to_le64(len);
1968 cifs_dbg(FYI, "Duplicate extents: src off %lld dst off %lld len %lld\n",
1969 src_off, dest_off, len);
1971 inode = d_inode(trgtfile->dentry);
1972 if (inode->i_size < dest_off + len) {
1973 rc = smb2_set_file_size(xid, tcon, trgtfile, dest_off + len, false);
1975 goto duplicate_extents_out;
1978 * Although also could set plausible allocation size (i_blocks)
1979 * here in addition to setting the file size, in reflink
1980 * it is likely that the target file is sparse. Its allocation
1981 * size will be queried on next revalidate, but it is important
1982 * to make sure that file's cached size is updated immediately
1984 cifs_setsize(inode, dest_off + len);
1986 rc = SMB2_ioctl(xid, tcon, trgtfile->fid.persistent_fid,
1987 trgtfile->fid.volatile_fid,
1988 FSCTL_DUPLICATE_EXTENTS_TO_FILE,
1989 (char *)&dup_ext_buf,
1990 sizeof(struct duplicate_extents_to_file),
1991 CIFSMaxBufSize, NULL,
1994 if (ret_data_len > 0)
1995 cifs_dbg(FYI, "Non-zero response length in duplicate extents\n");
1997 duplicate_extents_out:
2002 smb2_set_compression(const unsigned int xid, struct cifs_tcon *tcon,
2003 struct cifsFileInfo *cfile)
2005 return SMB2_set_compression(xid, tcon, cfile->fid.persistent_fid,
2006 cfile->fid.volatile_fid);
2010 smb3_set_integrity(const unsigned int xid, struct cifs_tcon *tcon,
2011 struct cifsFileInfo *cfile)
2013 struct fsctl_set_integrity_information_req integr_info;
2014 unsigned int ret_data_len;
2016 integr_info.ChecksumAlgorithm = cpu_to_le16(CHECKSUM_TYPE_UNCHANGED);
2017 integr_info.Flags = 0;
2018 integr_info.Reserved = 0;
2020 return SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
2021 cfile->fid.volatile_fid,
2022 FSCTL_SET_INTEGRITY_INFORMATION,
2023 (char *)&integr_info,
2024 sizeof(struct fsctl_set_integrity_information_req),
2025 CIFSMaxBufSize, NULL,
2030 /* GMT Token is @GMT-YYYY.MM.DD-HH.MM.SS Unicode which is 48 bytes + null */
2031 #define GMT_TOKEN_SIZE 50
2033 #define MIN_SNAPSHOT_ARRAY_SIZE 16 /* See MS-SMB2 section 3.3.5.15.1 */
2036 * Input buffer contains (empty) struct smb_snapshot array with size filled in
2037 * For output see struct SRV_SNAPSHOT_ARRAY in MS-SMB2 section 2.2.32.2
2040 smb3_enum_snapshots(const unsigned int xid, struct cifs_tcon *tcon,
2041 struct cifsFileInfo *cfile, void __user *ioc_buf)
2043 char *retbuf = NULL;
2044 unsigned int ret_data_len = 0;
2046 u32 max_response_size;
2047 struct smb_snapshot_array snapshot_in;
2050 * On the first query to enumerate the list of snapshots available
2051 * for this volume the buffer begins with 0 (number of snapshots
2052 * which can be returned is zero since at that point we do not know
2053 * how big the buffer needs to be). On the second query,
2054 * it (ret_data_len) is set to number of snapshots so we can
2055 * know to set the maximum response size larger (see below).
2057 if (get_user(ret_data_len, (unsigned int __user *)ioc_buf))
2061 * Note that for snapshot queries that servers like Azure expect that
2062 * the first query be minimal size (and just used to get the number/size
2063 * of previous versions) so response size must be specified as EXACTLY
2064 * sizeof(struct snapshot_array) which is 16 when rounded up to multiple
2067 if (ret_data_len == 0)
2068 max_response_size = MIN_SNAPSHOT_ARRAY_SIZE;
2070 max_response_size = CIFSMaxBufSize;
2072 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
2073 cfile->fid.volatile_fid,
2074 FSCTL_SRV_ENUMERATE_SNAPSHOTS,
2075 NULL, 0 /* no input data */, max_response_size,
2078 cifs_dbg(FYI, "enum snaphots ioctl returned %d and ret buflen is %d\n",
2083 if (ret_data_len && (ioc_buf != NULL) && (retbuf != NULL)) {
2085 if (copy_from_user(&snapshot_in, ioc_buf,
2086 sizeof(struct smb_snapshot_array))) {
2093 * Check for min size, ie not large enough to fit even one GMT
2094 * token (snapshot). On the first ioctl some users may pass in
2095 * smaller size (or zero) to simply get the size of the array
2096 * so the user space caller can allocate sufficient memory
2097 * and retry the ioctl again with larger array size sufficient
2098 * to hold all of the snapshot GMT tokens on the second try.
2100 if (snapshot_in.snapshot_array_size < GMT_TOKEN_SIZE)
2101 ret_data_len = sizeof(struct smb_snapshot_array);
2104 * We return struct SRV_SNAPSHOT_ARRAY, followed by
2105 * the snapshot array (of 50 byte GMT tokens) each
2106 * representing an available previous version of the data
2108 if (ret_data_len > (snapshot_in.snapshot_array_size +
2109 sizeof(struct smb_snapshot_array)))
2110 ret_data_len = snapshot_in.snapshot_array_size +
2111 sizeof(struct smb_snapshot_array);
2113 if (copy_to_user(ioc_buf, retbuf, ret_data_len))
2124 smb3_notify(const unsigned int xid, struct file *pfile,
2125 void __user *ioc_buf, bool return_changes)
2127 struct smb3_notify_info notify;
2128 struct smb3_notify_info __user *pnotify_buf;
2129 struct dentry *dentry = pfile->f_path.dentry;
2130 struct inode *inode = file_inode(pfile);
2131 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
2132 struct cifs_open_parms oparms;
2133 struct cifs_fid fid;
2134 struct cifs_tcon *tcon;
2135 const unsigned char *path;
2136 char *returned_ioctl_info = NULL;
2137 void *page = alloc_dentry_path();
2138 __le16 *utf16_path = NULL;
2139 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
2143 path = build_path_from_dentry(dentry, page);
2149 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
2150 if (utf16_path == NULL) {
2155 if (return_changes) {
2156 if (copy_from_user(¬ify, ioc_buf, sizeof(struct smb3_notify_info))) {
2161 if (copy_from_user(¬ify, ioc_buf, sizeof(struct smb3_notify))) {
2165 notify.data_len = 0;
2168 tcon = cifs_sb_master_tcon(cifs_sb);
2169 oparms = (struct cifs_open_parms) {
2172 .desired_access = FILE_READ_ATTRIBUTES | FILE_READ_DATA,
2173 .disposition = FILE_OPEN,
2174 .create_options = cifs_create_options(cifs_sb, 0),
2178 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL, NULL,
2183 rc = SMB2_change_notify(xid, tcon, fid.persistent_fid, fid.volatile_fid,
2184 notify.watch_tree, notify.completion_filter,
2185 notify.data_len, &returned_ioctl_info, &ret_len);
2187 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
2189 cifs_dbg(FYI, "change notify for path %s rc %d\n", path, rc);
2190 if (return_changes && (ret_len > 0) && (notify.data_len > 0)) {
2191 if (ret_len > notify.data_len)
2192 ret_len = notify.data_len;
2193 pnotify_buf = (struct smb3_notify_info __user *)ioc_buf;
2194 if (copy_to_user(pnotify_buf->notify_data, returned_ioctl_info, ret_len))
2196 else if (copy_to_user(&pnotify_buf->data_len, &ret_len, sizeof(ret_len)))
2199 kfree(returned_ioctl_info);
2201 free_dentry_path(page);
2207 smb2_query_dir_first(const unsigned int xid, struct cifs_tcon *tcon,
2208 const char *path, struct cifs_sb_info *cifs_sb,
2209 struct cifs_fid *fid, __u16 search_flags,
2210 struct cifs_search_info *srch_inf)
2213 struct smb_rqst rqst[2];
2214 struct kvec rsp_iov[2];
2215 int resp_buftype[2];
2216 struct kvec open_iov[SMB2_CREATE_IOV_SIZE];
2217 struct kvec qd_iov[SMB2_QUERY_DIRECTORY_IOV_SIZE];
2219 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
2220 struct cifs_open_parms oparms;
2221 struct smb2_query_directory_rsp *qd_rsp = NULL;
2222 struct smb2_create_rsp *op_rsp = NULL;
2223 struct TCP_Server_Info *server = cifs_pick_channel(tcon->ses);
2224 int retry_count = 0;
2226 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
2230 if (smb3_encryption_required(tcon))
2231 flags |= CIFS_TRANSFORM_REQ;
2233 memset(rqst, 0, sizeof(rqst));
2234 resp_buftype[0] = resp_buftype[1] = CIFS_NO_BUFFER;
2235 memset(rsp_iov, 0, sizeof(rsp_iov));
2238 memset(&open_iov, 0, sizeof(open_iov));
2239 rqst[0].rq_iov = open_iov;
2240 rqst[0].rq_nvec = SMB2_CREATE_IOV_SIZE;
2242 oparms = (struct cifs_open_parms) {
2245 .desired_access = FILE_READ_ATTRIBUTES | FILE_READ_DATA,
2246 .disposition = FILE_OPEN,
2247 .create_options = cifs_create_options(cifs_sb, 0),
2251 rc = SMB2_open_init(tcon, server,
2252 &rqst[0], &oplock, &oparms, utf16_path);
2255 smb2_set_next_command(tcon, &rqst[0]);
2257 /* Query directory */
2258 srch_inf->entries_in_buffer = 0;
2259 srch_inf->index_of_last_entry = 2;
2261 memset(&qd_iov, 0, sizeof(qd_iov));
2262 rqst[1].rq_iov = qd_iov;
2263 rqst[1].rq_nvec = SMB2_QUERY_DIRECTORY_IOV_SIZE;
2265 rc = SMB2_query_directory_init(xid, tcon, server,
2267 COMPOUND_FID, COMPOUND_FID,
2268 0, srch_inf->info_level);
2272 smb2_set_related(&rqst[1]);
2275 rc = compound_send_recv(xid, tcon->ses, server,
2277 resp_buftype, rsp_iov);
2279 if (rc == -EAGAIN && retry_count++ < 10)
2282 /* If the open failed there is nothing to do */
2283 op_rsp = (struct smb2_create_rsp *)rsp_iov[0].iov_base;
2284 if (op_rsp == NULL || op_rsp->hdr.Status != STATUS_SUCCESS) {
2285 cifs_dbg(FYI, "query_dir_first: open failed rc=%d\n", rc);
2288 fid->persistent_fid = op_rsp->PersistentFileId;
2289 fid->volatile_fid = op_rsp->VolatileFileId;
2291 /* Anything else than ENODATA means a genuine error */
2292 if (rc && rc != -ENODATA) {
2293 SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
2294 cifs_dbg(FYI, "query_dir_first: query directory failed rc=%d\n", rc);
2295 trace_smb3_query_dir_err(xid, fid->persistent_fid,
2296 tcon->tid, tcon->ses->Suid, 0, 0, rc);
2300 atomic_inc(&tcon->num_remote_opens);
2302 qd_rsp = (struct smb2_query_directory_rsp *)rsp_iov[1].iov_base;
2303 if (qd_rsp->hdr.Status == STATUS_NO_MORE_FILES) {
2304 trace_smb3_query_dir_done(xid, fid->persistent_fid,
2305 tcon->tid, tcon->ses->Suid, 0, 0);
2306 srch_inf->endOfSearch = true;
2311 rc = smb2_parse_query_directory(tcon, &rsp_iov[1], resp_buftype[1],
2314 trace_smb3_query_dir_err(xid, fid->persistent_fid, tcon->tid,
2315 tcon->ses->Suid, 0, 0, rc);
2318 resp_buftype[1] = CIFS_NO_BUFFER;
2320 trace_smb3_query_dir_done(xid, fid->persistent_fid, tcon->tid,
2321 tcon->ses->Suid, 0, srch_inf->entries_in_buffer);
2325 SMB2_open_free(&rqst[0]);
2326 SMB2_query_directory_free(&rqst[1]);
2327 free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base);
2328 free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base);
2333 smb2_query_dir_next(const unsigned int xid, struct cifs_tcon *tcon,
2334 struct cifs_fid *fid, __u16 search_flags,
2335 struct cifs_search_info *srch_inf)
2337 return SMB2_query_directory(xid, tcon, fid->persistent_fid,
2338 fid->volatile_fid, 0, srch_inf);
2342 smb2_close_dir(const unsigned int xid, struct cifs_tcon *tcon,
2343 struct cifs_fid *fid)
2345 return SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
2349 * If we negotiate SMB2 protocol and get STATUS_PENDING - update
2350 * the number of credits and return true. Otherwise - return false.
2353 smb2_is_status_pending(char *buf, struct TCP_Server_Info *server)
2355 struct smb2_hdr *shdr = (struct smb2_hdr *)buf;
2356 int scredits, in_flight;
2358 if (shdr->Status != STATUS_PENDING)
2361 if (shdr->CreditRequest) {
2362 spin_lock(&server->req_lock);
2363 server->credits += le16_to_cpu(shdr->CreditRequest);
2364 scredits = server->credits;
2365 in_flight = server->in_flight;
2366 spin_unlock(&server->req_lock);
2367 wake_up(&server->request_q);
2369 trace_smb3_pend_credits(server->CurrentMid,
2370 server->conn_id, server->hostname, scredits,
2371 le16_to_cpu(shdr->CreditRequest), in_flight);
2372 cifs_dbg(FYI, "%s: status pending add %u credits total=%d\n",
2373 __func__, le16_to_cpu(shdr->CreditRequest), scredits);
2380 smb2_is_session_expired(char *buf)
2382 struct smb2_hdr *shdr = (struct smb2_hdr *)buf;
2384 if (shdr->Status != STATUS_NETWORK_SESSION_EXPIRED &&
2385 shdr->Status != STATUS_USER_SESSION_DELETED)
2388 trace_smb3_ses_expired(le32_to_cpu(shdr->Id.SyncId.TreeId),
2389 le64_to_cpu(shdr->SessionId),
2390 le16_to_cpu(shdr->Command),
2391 le64_to_cpu(shdr->MessageId));
2392 cifs_dbg(FYI, "Session expired or deleted\n");
2398 smb2_is_status_io_timeout(char *buf)
2400 struct smb2_hdr *shdr = (struct smb2_hdr *)buf;
2402 if (shdr->Status == STATUS_IO_TIMEOUT)
2409 smb2_is_network_name_deleted(char *buf, struct TCP_Server_Info *server)
2411 struct smb2_hdr *shdr = (struct smb2_hdr *)buf;
2412 struct TCP_Server_Info *pserver;
2413 struct cifs_ses *ses;
2414 struct cifs_tcon *tcon;
2416 if (shdr->Status != STATUS_NETWORK_NAME_DELETED)
2419 /* If server is a channel, select the primary channel */
2420 pserver = SERVER_IS_CHAN(server) ? server->primary_server : server;
2422 spin_lock(&cifs_tcp_ses_lock);
2423 list_for_each_entry(ses, &pserver->smb_ses_list, smb_ses_list) {
2424 list_for_each_entry(tcon, &ses->tcon_list, tcon_list) {
2425 if (tcon->tid == le32_to_cpu(shdr->Id.SyncId.TreeId)) {
2426 spin_lock(&tcon->tc_lock);
2427 tcon->need_reconnect = true;
2428 spin_unlock(&tcon->tc_lock);
2429 spin_unlock(&cifs_tcp_ses_lock);
2430 pr_warn_once("Server share %s deleted.\n",
2436 spin_unlock(&cifs_tcp_ses_lock);
2442 smb2_oplock_response(struct cifs_tcon *tcon, __u64 persistent_fid,
2443 __u64 volatile_fid, __u16 net_fid, struct cifsInodeInfo *cinode)
2445 if (tcon->ses->server->capabilities & SMB2_GLOBAL_CAP_LEASING)
2446 return SMB2_lease_break(0, tcon, cinode->lease_key,
2447 smb2_get_lease_state(cinode));
2449 return SMB2_oplock_break(0, tcon, persistent_fid, volatile_fid,
2450 CIFS_CACHE_READ(cinode) ? 1 : 0);
2454 smb2_set_related(struct smb_rqst *rqst)
2456 struct smb2_hdr *shdr;
2458 shdr = (struct smb2_hdr *)(rqst->rq_iov[0].iov_base);
2460 cifs_dbg(FYI, "shdr NULL in smb2_set_related\n");
2463 shdr->Flags |= SMB2_FLAGS_RELATED_OPERATIONS;
2466 char smb2_padding[7] = {0, 0, 0, 0, 0, 0, 0};
2469 smb2_set_next_command(struct cifs_tcon *tcon, struct smb_rqst *rqst)
2471 struct smb2_hdr *shdr;
2472 struct cifs_ses *ses = tcon->ses;
2473 struct TCP_Server_Info *server = ses->server;
2474 unsigned long len = smb_rqst_len(server, rqst);
2477 shdr = (struct smb2_hdr *)(rqst->rq_iov[0].iov_base);
2479 cifs_dbg(FYI, "shdr NULL in smb2_set_next_command\n");
2483 /* SMB headers in a compound are 8 byte aligned. */
2485 /* No padding needed */
2489 num_padding = 8 - (len & 7);
2490 if (!smb3_encryption_required(tcon)) {
2492 * If we do not have encryption then we can just add an extra
2493 * iov for the padding.
2495 rqst->rq_iov[rqst->rq_nvec].iov_base = smb2_padding;
2496 rqst->rq_iov[rqst->rq_nvec].iov_len = num_padding;
2501 * We can not add a small padding iov for the encryption case
2502 * because the encryption framework can not handle the padding
2504 * We have to flatten this into a single buffer and add
2505 * the padding to it.
2507 for (i = 1; i < rqst->rq_nvec; i++) {
2508 memcpy(rqst->rq_iov[0].iov_base +
2509 rqst->rq_iov[0].iov_len,
2510 rqst->rq_iov[i].iov_base,
2511 rqst->rq_iov[i].iov_len);
2512 rqst->rq_iov[0].iov_len += rqst->rq_iov[i].iov_len;
2514 memset(rqst->rq_iov[0].iov_base + rqst->rq_iov[0].iov_len,
2516 rqst->rq_iov[0].iov_len += num_padding;
2522 shdr->NextCommand = cpu_to_le32(len);
2526 * Passes the query info response back to the caller on success.
2527 * Caller need to free this with free_rsp_buf().
2530 smb2_query_info_compound(const unsigned int xid, struct cifs_tcon *tcon,
2531 const char *path, u32 desired_access,
2532 u32 class, u32 type, u32 output_len,
2533 struct kvec *rsp, int *buftype,
2534 struct cifs_sb_info *cifs_sb)
2536 struct smb2_compound_vars *vars;
2537 struct cifs_ses *ses = tcon->ses;
2538 struct TCP_Server_Info *server = cifs_pick_channel(ses);
2539 int flags = CIFS_CP_CREATE_CLOSE_OP;
2540 struct smb_rqst *rqst;
2541 int resp_buftype[3];
2542 struct kvec *rsp_iov;
2543 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
2544 struct cifs_open_parms oparms;
2545 struct cifs_fid fid;
2548 struct cached_fid *cfid = NULL;
2552 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
2556 if (smb3_encryption_required(tcon))
2557 flags |= CIFS_TRANSFORM_REQ;
2559 resp_buftype[0] = resp_buftype[1] = resp_buftype[2] = CIFS_NO_BUFFER;
2560 vars = kzalloc(sizeof(*vars), GFP_KERNEL);
2566 rsp_iov = vars->rsp_iov;
2569 * We can only call this for things we know are directories.
2571 if (!strcmp(path, ""))
2572 open_cached_dir(xid, tcon, path, cifs_sb, false,
2573 &cfid); /* cfid null if open dir failed */
2575 rqst[0].rq_iov = vars->open_iov;
2576 rqst[0].rq_nvec = SMB2_CREATE_IOV_SIZE;
2578 oparms = (struct cifs_open_parms) {
2581 .desired_access = desired_access,
2582 .disposition = FILE_OPEN,
2583 .create_options = cifs_create_options(cifs_sb, 0),
2587 rc = SMB2_open_init(tcon, server,
2588 &rqst[0], &oplock, &oparms, utf16_path);
2591 smb2_set_next_command(tcon, &rqst[0]);
2593 rqst[1].rq_iov = &vars->qi_iov;
2594 rqst[1].rq_nvec = 1;
2597 rc = SMB2_query_info_init(tcon, server,
2599 cfid->fid.persistent_fid,
2600 cfid->fid.volatile_fid,
2605 rc = SMB2_query_info_init(tcon, server,
2616 smb2_set_next_command(tcon, &rqst[1]);
2617 smb2_set_related(&rqst[1]);
2620 rqst[2].rq_iov = &vars->close_iov;
2621 rqst[2].rq_nvec = 1;
2623 rc = SMB2_close_init(tcon, server,
2624 &rqst[2], COMPOUND_FID, COMPOUND_FID, false);
2627 smb2_set_related(&rqst[2]);
2630 rc = compound_send_recv(xid, ses, server,
2632 &resp_buftype[1], &rsp_iov[1]);
2634 rc = compound_send_recv(xid, ses, server,
2636 resp_buftype, rsp_iov);
2639 free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base);
2640 if (rc == -EREMCHG) {
2641 tcon->need_reconnect = true;
2642 pr_warn_once("server share %s deleted\n",
2648 *buftype = resp_buftype[1];
2651 SMB2_open_free(&rqst[0]);
2652 SMB2_query_info_free(&rqst[1]);
2653 SMB2_close_free(&rqst[2]);
2654 free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base);
2655 free_rsp_buf(resp_buftype[2], rsp_iov[2].iov_base);
2657 close_cached_dir(cfid);
2665 smb2_queryfs(const unsigned int xid, struct cifs_tcon *tcon,
2666 struct cifs_sb_info *cifs_sb, struct kstatfs *buf)
2668 struct smb2_query_info_rsp *rsp;
2669 struct smb2_fs_full_size_info *info = NULL;
2670 struct kvec rsp_iov = {NULL, 0};
2671 int buftype = CIFS_NO_BUFFER;
2675 rc = smb2_query_info_compound(xid, tcon, "",
2676 FILE_READ_ATTRIBUTES,
2677 FS_FULL_SIZE_INFORMATION,
2678 SMB2_O_INFO_FILESYSTEM,
2679 sizeof(struct smb2_fs_full_size_info),
2680 &rsp_iov, &buftype, cifs_sb);
2684 rsp = (struct smb2_query_info_rsp *)rsp_iov.iov_base;
2685 buf->f_type = SMB2_SUPER_MAGIC;
2686 info = (struct smb2_fs_full_size_info *)(
2687 le16_to_cpu(rsp->OutputBufferOffset) + (char *)rsp);
2688 rc = smb2_validate_iov(le16_to_cpu(rsp->OutputBufferOffset),
2689 le32_to_cpu(rsp->OutputBufferLength),
2691 sizeof(struct smb2_fs_full_size_info));
2693 smb2_copy_fs_info_to_kstatfs(info, buf);
2696 trace_smb3_qfs_done(xid, tcon->tid, tcon->ses->Suid, tcon->tree_name, rc);
2697 free_rsp_buf(buftype, rsp_iov.iov_base);
2702 smb311_queryfs(const unsigned int xid, struct cifs_tcon *tcon,
2703 struct cifs_sb_info *cifs_sb, struct kstatfs *buf)
2706 __le16 srch_path = 0; /* Null - open root of share */
2707 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
2708 struct cifs_open_parms oparms;
2709 struct cifs_fid fid;
2711 if (!tcon->posix_extensions)
2712 return smb2_queryfs(xid, tcon, cifs_sb, buf);
2714 oparms = (struct cifs_open_parms) {
2717 .desired_access = FILE_READ_ATTRIBUTES,
2718 .disposition = FILE_OPEN,
2719 .create_options = cifs_create_options(cifs_sb, 0),
2723 rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL,
2728 rc = SMB311_posix_qfs_info(xid, tcon, fid.persistent_fid,
2729 fid.volatile_fid, buf);
2730 buf->f_type = SMB2_SUPER_MAGIC;
2731 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
2736 smb2_compare_fids(struct cifsFileInfo *ob1, struct cifsFileInfo *ob2)
2738 return ob1->fid.persistent_fid == ob2->fid.persistent_fid &&
2739 ob1->fid.volatile_fid == ob2->fid.volatile_fid;
2743 smb2_mand_lock(const unsigned int xid, struct cifsFileInfo *cfile, __u64 offset,
2744 __u64 length, __u32 type, int lock, int unlock, bool wait)
2746 if (unlock && !lock)
2747 type = SMB2_LOCKFLAG_UNLOCK;
2748 return SMB2_lock(xid, tlink_tcon(cfile->tlink),
2749 cfile->fid.persistent_fid, cfile->fid.volatile_fid,
2750 current->tgid, length, offset, type, wait);
2754 smb2_get_lease_key(struct inode *inode, struct cifs_fid *fid)
2756 memcpy(fid->lease_key, CIFS_I(inode)->lease_key, SMB2_LEASE_KEY_SIZE);
2760 smb2_set_lease_key(struct inode *inode, struct cifs_fid *fid)
2762 memcpy(CIFS_I(inode)->lease_key, fid->lease_key, SMB2_LEASE_KEY_SIZE);
2766 smb2_new_lease_key(struct cifs_fid *fid)
2768 generate_random_uuid(fid->lease_key);
2772 smb2_get_dfs_refer(const unsigned int xid, struct cifs_ses *ses,
2773 const char *search_name,
2774 struct dfs_info3_param **target_nodes,
2775 unsigned int *num_of_nodes,
2776 const struct nls_table *nls_codepage, int remap)
2779 __le16 *utf16_path = NULL;
2780 int utf16_path_len = 0;
2781 struct cifs_tcon *tcon;
2782 struct fsctl_get_dfs_referral_req *dfs_req = NULL;
2783 struct get_dfs_referral_rsp *dfs_rsp = NULL;
2784 u32 dfs_req_size = 0, dfs_rsp_size = 0;
2785 int retry_count = 0;
2787 cifs_dbg(FYI, "%s: path: %s\n", __func__, search_name);
2790 * Try to use the IPC tcon, otherwise just use any
2792 tcon = ses->tcon_ipc;
2794 spin_lock(&cifs_tcp_ses_lock);
2795 tcon = list_first_entry_or_null(&ses->tcon_list,
2800 spin_unlock(&cifs_tcp_ses_lock);
2804 cifs_dbg(VFS, "session %p has no tcon available for a dfs referral request\n",
2810 utf16_path = cifs_strndup_to_utf16(search_name, PATH_MAX,
2812 nls_codepage, remap);
2818 dfs_req_size = sizeof(*dfs_req) + utf16_path_len;
2819 dfs_req = kzalloc(dfs_req_size, GFP_KERNEL);
2825 /* Highest DFS referral version understood */
2826 dfs_req->MaxReferralLevel = DFS_VERSION;
2828 /* Path to resolve in an UTF-16 null-terminated string */
2829 memcpy(dfs_req->RequestFileName, utf16_path, utf16_path_len);
2832 rc = SMB2_ioctl(xid, tcon, NO_FILE_ID, NO_FILE_ID,
2833 FSCTL_DFS_GET_REFERRALS,
2834 (char *)dfs_req, dfs_req_size, CIFSMaxBufSize,
2835 (char **)&dfs_rsp, &dfs_rsp_size);
2836 if (!is_retryable_error(rc))
2838 usleep_range(512, 2048);
2839 } while (++retry_count < 5);
2841 if (!rc && !dfs_rsp)
2844 if (!is_retryable_error(rc) && rc != -ENOENT && rc != -EOPNOTSUPP)
2845 cifs_tcon_dbg(VFS, "%s: ioctl error: rc=%d\n", __func__, rc);
2849 rc = parse_dfs_referrals(dfs_rsp, dfs_rsp_size,
2850 num_of_nodes, target_nodes,
2851 nls_codepage, remap, search_name,
2852 true /* is_unicode */);
2854 cifs_tcon_dbg(VFS, "parse error in %s rc=%d\n", __func__, rc);
2859 if (tcon && !tcon->ipc) {
2860 /* ipc tcons are not refcounted */
2861 spin_lock(&cifs_tcp_ses_lock);
2863 /* tc_count can never go negative */
2864 WARN_ON(tcon->tc_count < 0);
2865 spin_unlock(&cifs_tcp_ses_lock);
2873 /* See MS-FSCC 2.1.2.6 for the 'NFS' style reparse tags */
2874 static int parse_reparse_posix(struct reparse_posix_data *buf,
2875 struct cifs_sb_info *cifs_sb,
2876 struct cifs_open_info_data *data)
2881 switch ((type = le64_to_cpu(buf->InodeType))) {
2882 case NFS_SPECFILE_LNK:
2883 len = le16_to_cpu(buf->ReparseDataLength);
2884 data->symlink_target = cifs_strndup_from_utf16(buf->DataBuffer,
2886 cifs_sb->local_nls);
2887 if (!data->symlink_target)
2889 convert_delimiter(data->symlink_target, '/');
2890 cifs_dbg(FYI, "%s: target path: %s\n",
2891 __func__, data->symlink_target);
2893 case NFS_SPECFILE_CHR:
2894 case NFS_SPECFILE_BLK:
2895 case NFS_SPECFILE_FIFO:
2896 case NFS_SPECFILE_SOCK:
2899 cifs_dbg(VFS, "%s: unhandled inode type: 0x%llx\n",
2906 static int parse_reparse_symlink(struct reparse_symlink_data_buffer *sym,
2907 u32 plen, bool unicode,
2908 struct cifs_sb_info *cifs_sb,
2909 struct cifs_open_info_data *data)
2914 /* We handle Symbolic Link reparse tag here. See: MS-FSCC 2.1.2.4 */
2916 offs = le16_to_cpu(sym->SubstituteNameOffset);
2917 len = le16_to_cpu(sym->SubstituteNameLength);
2918 if (offs + 20 > plen || offs + len + 20 > plen) {
2919 cifs_dbg(VFS, "srv returned malformed symlink buffer\n");
2923 data->symlink_target = cifs_strndup_from_utf16(sym->PathBuffer + offs,
2925 cifs_sb->local_nls);
2926 if (!data->symlink_target)
2929 convert_delimiter(data->symlink_target, '/');
2930 cifs_dbg(FYI, "%s: target path: %s\n", __func__, data->symlink_target);
2935 int parse_reparse_point(struct reparse_data_buffer *buf,
2936 u32 plen, struct cifs_sb_info *cifs_sb,
2937 bool unicode, struct cifs_open_info_data *data)
2939 if (plen < sizeof(*buf)) {
2940 cifs_dbg(VFS, "%s: reparse buffer is too small. Must be at least 8 bytes but was %d\n",
2945 if (plen < le16_to_cpu(buf->ReparseDataLength) + sizeof(*buf)) {
2946 cifs_dbg(VFS, "%s: invalid reparse buf length: %d\n",
2951 data->reparse.buf = buf;
2953 /* See MS-FSCC 2.1.2 */
2954 switch (le32_to_cpu(buf->ReparseTag)) {
2955 case IO_REPARSE_TAG_NFS:
2956 return parse_reparse_posix((struct reparse_posix_data *)buf,
2958 case IO_REPARSE_TAG_SYMLINK:
2959 return parse_reparse_symlink(
2960 (struct reparse_symlink_data_buffer *)buf,
2961 plen, unicode, cifs_sb, data);
2962 case IO_REPARSE_TAG_LX_SYMLINK:
2963 case IO_REPARSE_TAG_AF_UNIX:
2964 case IO_REPARSE_TAG_LX_FIFO:
2965 case IO_REPARSE_TAG_LX_CHR:
2966 case IO_REPARSE_TAG_LX_BLK:
2969 cifs_dbg(VFS, "%s: unhandled reparse tag: 0x%08x\n",
2970 __func__, le32_to_cpu(buf->ReparseTag));
2975 static int smb2_parse_reparse_point(struct cifs_sb_info *cifs_sb,
2976 struct kvec *rsp_iov,
2977 struct cifs_open_info_data *data)
2979 struct reparse_data_buffer *buf;
2980 struct smb2_ioctl_rsp *io = rsp_iov->iov_base;
2981 u32 plen = le32_to_cpu(io->OutputCount);
2983 buf = (struct reparse_data_buffer *)((u8 *)io +
2984 le32_to_cpu(io->OutputOffset));
2985 return parse_reparse_point(buf, plen, cifs_sb, true, data);
2988 static int smb2_query_reparse_point(const unsigned int xid,
2989 struct cifs_tcon *tcon,
2990 struct cifs_sb_info *cifs_sb,
2991 const char *full_path,
2992 u32 *tag, struct kvec *rsp,
2995 struct smb2_compound_vars *vars;
2997 __le16 *utf16_path = NULL;
2998 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
2999 struct cifs_open_parms oparms;
3000 struct cifs_fid fid;
3001 struct TCP_Server_Info *server = cifs_pick_channel(tcon->ses);
3002 int flags = CIFS_CP_CREATE_CLOSE_OP;
3003 struct smb_rqst *rqst;
3004 int resp_buftype[3];
3005 struct kvec *rsp_iov;
3006 struct smb2_ioctl_rsp *ioctl_rsp;
3007 struct reparse_data_buffer *reparse_buf;
3008 u32 off, count, len;
3010 cifs_dbg(FYI, "%s: path: %s\n", __func__, full_path);
3012 if (smb3_encryption_required(tcon))
3013 flags |= CIFS_TRANSFORM_REQ;
3015 utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb);
3019 resp_buftype[0] = resp_buftype[1] = resp_buftype[2] = CIFS_NO_BUFFER;
3020 vars = kzalloc(sizeof(*vars), GFP_KERNEL);
3026 rsp_iov = vars->rsp_iov;
3029 * setup smb2open - TODO add optimization to call cifs_get_readable_path
3030 * to see if there is a handle already open that we can use
3032 rqst[0].rq_iov = vars->open_iov;
3033 rqst[0].rq_nvec = SMB2_CREATE_IOV_SIZE;
3035 oparms = (struct cifs_open_parms) {
3038 .desired_access = FILE_READ_ATTRIBUTES,
3039 .disposition = FILE_OPEN,
3040 .create_options = cifs_create_options(cifs_sb, OPEN_REPARSE_POINT),
3044 rc = SMB2_open_init(tcon, server,
3045 &rqst[0], &oplock, &oparms, utf16_path);
3048 smb2_set_next_command(tcon, &rqst[0]);
3052 rqst[1].rq_iov = vars->io_iov;
3053 rqst[1].rq_nvec = SMB2_IOCTL_IOV_SIZE;
3055 rc = SMB2_ioctl_init(tcon, server,
3056 &rqst[1], COMPOUND_FID,
3057 COMPOUND_FID, FSCTL_GET_REPARSE_POINT, NULL, 0,
3059 MAX_SMB2_CREATE_RESPONSE_SIZE -
3060 MAX_SMB2_CLOSE_RESPONSE_SIZE);
3064 smb2_set_next_command(tcon, &rqst[1]);
3065 smb2_set_related(&rqst[1]);
3068 rqst[2].rq_iov = &vars->close_iov;
3069 rqst[2].rq_nvec = 1;
3071 rc = SMB2_close_init(tcon, server,
3072 &rqst[2], COMPOUND_FID, COMPOUND_FID, false);
3076 smb2_set_related(&rqst[2]);
3078 rc = compound_send_recv(xid, tcon->ses, server,
3080 resp_buftype, rsp_iov);
3082 ioctl_rsp = rsp_iov[1].iov_base;
3085 * Open was successful and we got an ioctl response.
3088 /* See MS-FSCC 2.3.23 */
3089 off = le32_to_cpu(ioctl_rsp->OutputOffset);
3090 count = le32_to_cpu(ioctl_rsp->OutputCount);
3091 if (check_add_overflow(off, count, &len) ||
3092 len > rsp_iov[1].iov_len) {
3093 cifs_tcon_dbg(VFS, "%s: invalid ioctl: off=%d count=%d\n",
3094 __func__, off, count);
3099 reparse_buf = (void *)((u8 *)ioctl_rsp + off);
3100 len = sizeof(*reparse_buf);
3102 count < le16_to_cpu(reparse_buf->ReparseDataLength) + len) {
3103 cifs_tcon_dbg(VFS, "%s: invalid ioctl: off=%d count=%d\n",
3104 __func__, off, count);
3108 *tag = le32_to_cpu(reparse_buf->ReparseTag);
3110 *rsp_buftype = resp_buftype[1];
3111 resp_buftype[1] = CIFS_NO_BUFFER;
3115 SMB2_open_free(&rqst[0]);
3116 SMB2_ioctl_free(&rqst[1]);
3117 SMB2_close_free(&rqst[2]);
3118 free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base);
3119 free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base);
3120 free_rsp_buf(resp_buftype[2], rsp_iov[2].iov_base);
3127 static struct cifs_ntsd *
3128 get_smb2_acl_by_fid(struct cifs_sb_info *cifs_sb,
3129 const struct cifs_fid *cifsfid, u32 *pacllen, u32 info)
3131 struct cifs_ntsd *pntsd = NULL;
3133 int rc = -EOPNOTSUPP;
3134 struct tcon_link *tlink = cifs_sb_tlink(cifs_sb);
3137 return ERR_CAST(tlink);
3140 cifs_dbg(FYI, "trying to get acl\n");
3142 rc = SMB2_query_acl(xid, tlink_tcon(tlink), cifsfid->persistent_fid,
3143 cifsfid->volatile_fid, (void **)&pntsd, pacllen,
3147 cifs_put_tlink(tlink);
3149 cifs_dbg(FYI, "%s: rc = %d ACL len %d\n", __func__, rc, *pacllen);
3156 static struct cifs_ntsd *
3157 get_smb2_acl_by_path(struct cifs_sb_info *cifs_sb,
3158 const char *path, u32 *pacllen, u32 info)
3160 struct cifs_ntsd *pntsd = NULL;
3161 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
3164 struct cifs_tcon *tcon;
3165 struct tcon_link *tlink = cifs_sb_tlink(cifs_sb);
3166 struct cifs_fid fid;
3167 struct cifs_open_parms oparms;
3170 cifs_dbg(FYI, "get smb3 acl for path %s\n", path);
3172 return ERR_CAST(tlink);
3174 tcon = tlink_tcon(tlink);
3177 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
3184 oparms = (struct cifs_open_parms) {
3187 .desired_access = READ_CONTROL,
3188 .disposition = FILE_OPEN,
3190 * When querying an ACL, even if the file is a symlink
3191 * we want to open the source not the target, and so
3192 * the protocol requires that the client specify this
3193 * flag when opening a reparse point
3195 .create_options = cifs_create_options(cifs_sb, 0) |
3200 if (info & SACL_SECINFO)
3201 oparms.desired_access |= SYSTEM_SECURITY;
3203 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL, NULL,
3207 rc = SMB2_query_acl(xid, tlink_tcon(tlink), fid.persistent_fid,
3208 fid.volatile_fid, (void **)&pntsd, pacllen,
3210 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
3213 cifs_put_tlink(tlink);
3216 cifs_dbg(FYI, "%s: rc = %d ACL len %d\n", __func__, rc, *pacllen);
3223 set_smb2_acl(struct cifs_ntsd *pnntsd, __u32 acllen,
3224 struct inode *inode, const char *path, int aclflag)
3226 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
3228 int rc, access_flags = 0;
3229 struct cifs_tcon *tcon;
3230 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
3231 struct tcon_link *tlink = cifs_sb_tlink(cifs_sb);
3232 struct cifs_fid fid;
3233 struct cifs_open_parms oparms;
3236 cifs_dbg(FYI, "set smb3 acl for path %s\n", path);
3238 return PTR_ERR(tlink);
3240 tcon = tlink_tcon(tlink);
3243 if (aclflag & CIFS_ACL_OWNER || aclflag & CIFS_ACL_GROUP)
3244 access_flags |= WRITE_OWNER;
3245 if (aclflag & CIFS_ACL_SACL)
3246 access_flags |= SYSTEM_SECURITY;
3247 if (aclflag & CIFS_ACL_DACL)
3248 access_flags |= WRITE_DAC;
3250 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
3257 oparms = (struct cifs_open_parms) {
3259 .desired_access = access_flags,
3260 .create_options = cifs_create_options(cifs_sb, 0),
3261 .disposition = FILE_OPEN,
3266 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL,
3270 rc = SMB2_set_acl(xid, tlink_tcon(tlink), fid.persistent_fid,
3271 fid.volatile_fid, pnntsd, acllen, aclflag);
3272 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
3275 cifs_put_tlink(tlink);
3280 /* Retrieve an ACL from the server */
3281 static struct cifs_ntsd *
3282 get_smb2_acl(struct cifs_sb_info *cifs_sb,
3283 struct inode *inode, const char *path,
3284 u32 *pacllen, u32 info)
3286 struct cifs_ntsd *pntsd = NULL;
3287 struct cifsFileInfo *open_file = NULL;
3289 if (inode && !(info & SACL_SECINFO))
3290 open_file = find_readable_file(CIFS_I(inode), true);
3291 if (!open_file || (info & SACL_SECINFO))
3292 return get_smb2_acl_by_path(cifs_sb, path, pacllen, info);
3294 pntsd = get_smb2_acl_by_fid(cifs_sb, &open_file->fid, pacllen, info);
3295 cifsFileInfo_put(open_file);
3299 static long smb3_zero_data(struct file *file, struct cifs_tcon *tcon,
3300 loff_t offset, loff_t len, unsigned int xid)
3302 struct cifsFileInfo *cfile = file->private_data;
3303 struct file_zero_data_information fsctl_buf;
3305 cifs_dbg(FYI, "Offset %lld len %lld\n", offset, len);
3307 fsctl_buf.FileOffset = cpu_to_le64(offset);
3308 fsctl_buf.BeyondFinalZero = cpu_to_le64(offset + len);
3310 return SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
3311 cfile->fid.volatile_fid, FSCTL_SET_ZERO_DATA,
3313 sizeof(struct file_zero_data_information),
3317 static long smb3_zero_range(struct file *file, struct cifs_tcon *tcon,
3318 loff_t offset, loff_t len, bool keep_size)
3320 struct cifs_ses *ses = tcon->ses;
3321 struct inode *inode = file_inode(file);
3322 struct cifsInodeInfo *cifsi = CIFS_I(inode);
3323 struct cifsFileInfo *cfile = file->private_data;
3324 unsigned long long new_size;
3331 trace_smb3_zero_enter(xid, cfile->fid.persistent_fid, tcon->tid,
3332 ses->Suid, offset, len);
3335 filemap_invalidate_lock(inode->i_mapping);
3338 * We zero the range through ioctl, so we need remove the page caches
3339 * first, otherwise the data may be inconsistent with the server.
3341 truncate_pagecache_range(inode, offset, offset + len - 1);
3343 /* if file not oplocked can't be sure whether asking to extend size */
3345 if (keep_size == false && !CIFS_CACHE_READ(cifsi))
3346 goto zero_range_exit;
3348 rc = smb3_zero_data(file, tcon, offset, len, xid);
3350 goto zero_range_exit;
3353 * do we also need to change the size of the file?
3355 new_size = offset + len;
3356 if (keep_size == false && (unsigned long long)i_size_read(inode) < new_size) {
3357 eof = cpu_to_le64(new_size);
3358 rc = SMB2_set_eof(xid, tcon, cfile->fid.persistent_fid,
3359 cfile->fid.volatile_fid, cfile->pid, &eof);
3361 truncate_setsize(inode, new_size);
3362 fscache_resize_cookie(cifs_inode_cookie(inode), new_size);
3367 filemap_invalidate_unlock(inode->i_mapping);
3368 inode_unlock(inode);
3371 trace_smb3_zero_err(xid, cfile->fid.persistent_fid, tcon->tid,
3372 ses->Suid, offset, len, rc);
3374 trace_smb3_zero_done(xid, cfile->fid.persistent_fid, tcon->tid,
3375 ses->Suid, offset, len);
3379 static long smb3_punch_hole(struct file *file, struct cifs_tcon *tcon,
3380 loff_t offset, loff_t len)
3382 struct inode *inode = file_inode(file);
3383 struct cifsFileInfo *cfile = file->private_data;
3384 struct file_zero_data_information fsctl_buf;
3387 __u8 set_sparse = 1;
3392 /* Need to make file sparse, if not already, before freeing range. */
3393 /* Consider adding equivalent for compressed since it could also work */
3394 if (!smb2_set_sparse(xid, tcon, cfile, inode, set_sparse)) {
3399 filemap_invalidate_lock(inode->i_mapping);
3401 * We implement the punch hole through ioctl, so we need remove the page
3402 * caches first, otherwise the data may be inconsistent with the server.
3404 truncate_pagecache_range(inode, offset, offset + len - 1);
3406 cifs_dbg(FYI, "Offset %lld len %lld\n", offset, len);
3408 fsctl_buf.FileOffset = cpu_to_le64(offset);
3409 fsctl_buf.BeyondFinalZero = cpu_to_le64(offset + len);
3411 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
3412 cfile->fid.volatile_fid, FSCTL_SET_ZERO_DATA,
3414 sizeof(struct file_zero_data_information),
3415 CIFSMaxBufSize, NULL, NULL);
3416 filemap_invalidate_unlock(inode->i_mapping);
3418 inode_unlock(inode);
3423 static int smb3_simple_fallocate_write_range(unsigned int xid,
3424 struct cifs_tcon *tcon,
3425 struct cifsFileInfo *cfile,
3426 loff_t off, loff_t len,
3429 struct cifs_io_parms io_parms = {0};
3434 io_parms.netfid = cfile->fid.netfid;
3435 io_parms.pid = current->tgid;
3436 io_parms.tcon = tcon;
3437 io_parms.persistent_fid = cfile->fid.persistent_fid;
3438 io_parms.volatile_fid = cfile->fid.volatile_fid;
3441 io_parms.offset = off;
3442 io_parms.length = len;
3443 if (io_parms.length > SMB2_MAX_BUFFER_SIZE)
3444 io_parms.length = SMB2_MAX_BUFFER_SIZE;
3445 /* iov[0] is reserved for smb header */
3446 iov[1].iov_base = buf;
3447 iov[1].iov_len = io_parms.length;
3448 rc = SMB2_write(xid, &io_parms, &nbytes, iov, 1);
3460 static int smb3_simple_fallocate_range(unsigned int xid,
3461 struct cifs_tcon *tcon,
3462 struct cifsFileInfo *cfile,
3463 loff_t off, loff_t len)
3465 struct file_allocated_range_buffer in_data, *out_data = NULL, *tmp_data;
3471 in_data.file_offset = cpu_to_le64(off);
3472 in_data.length = cpu_to_le64(len);
3473 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
3474 cfile->fid.volatile_fid,
3475 FSCTL_QUERY_ALLOCATED_RANGES,
3476 (char *)&in_data, sizeof(in_data),
3477 1024 * sizeof(struct file_allocated_range_buffer),
3478 (char **)&out_data, &out_data_len);
3482 buf = kzalloc(1024 * 1024, GFP_KERNEL);
3488 tmp_data = out_data;
3491 * The rest of the region is unmapped so write it all.
3493 if (out_data_len == 0) {
3494 rc = smb3_simple_fallocate_write_range(xid, tcon,
3495 cfile, off, len, buf);
3499 if (out_data_len < sizeof(struct file_allocated_range_buffer)) {
3504 if (off < le64_to_cpu(tmp_data->file_offset)) {
3506 * We are at a hole. Write until the end of the region
3507 * or until the next allocated data,
3508 * whichever comes next.
3510 l = le64_to_cpu(tmp_data->file_offset) - off;
3513 rc = smb3_simple_fallocate_write_range(xid, tcon,
3514 cfile, off, l, buf);
3523 * We are at a section of allocated data, just skip forward
3524 * until the end of the data or the end of the region
3525 * we are supposed to fallocate, whichever comes first.
3527 l = le64_to_cpu(tmp_data->length);
3533 tmp_data = &tmp_data[1];
3534 out_data_len -= sizeof(struct file_allocated_range_buffer);
3544 static long smb3_simple_falloc(struct file *file, struct cifs_tcon *tcon,
3545 loff_t off, loff_t len, bool keep_size)
3547 struct inode *inode;
3548 struct cifsInodeInfo *cifsi;
3549 struct cifsFileInfo *cfile = file->private_data;
3550 long rc = -EOPNOTSUPP;
3556 inode = d_inode(cfile->dentry);
3557 cifsi = CIFS_I(inode);
3559 trace_smb3_falloc_enter(xid, cfile->fid.persistent_fid, tcon->tid,
3560 tcon->ses->Suid, off, len);
3561 /* if file not oplocked can't be sure whether asking to extend size */
3562 if (!CIFS_CACHE_READ(cifsi))
3563 if (keep_size == false) {
3564 trace_smb3_falloc_err(xid, cfile->fid.persistent_fid,
3565 tcon->tid, tcon->ses->Suid, off, len, rc);
3571 * Extending the file
3573 if ((keep_size == false) && i_size_read(inode) < off + len) {
3574 rc = inode_newsize_ok(inode, off + len);
3578 if (cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE)
3579 smb2_set_sparse(xid, tcon, cfile, inode, false);
3581 eof = cpu_to_le64(off + len);
3582 rc = SMB2_set_eof(xid, tcon, cfile->fid.persistent_fid,
3583 cfile->fid.volatile_fid, cfile->pid, &eof);
3585 cifsi->server_eof = off + len;
3586 cifs_setsize(inode, off + len);
3587 cifs_truncate_page(inode->i_mapping, inode->i_size);
3588 truncate_setsize(inode, off + len);
3594 * Files are non-sparse by default so falloc may be a no-op
3595 * Must check if file sparse. If not sparse, and since we are not
3596 * extending then no need to do anything since file already allocated
3598 if ((cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) == 0) {
3603 if (keep_size == true) {
3605 * We can not preallocate pages beyond the end of the file
3608 if (off >= i_size_read(inode)) {
3613 * For fallocates that are partially beyond the end of file,
3614 * clamp len so we only fallocate up to the end of file.
3616 if (off + len > i_size_read(inode)) {
3617 len = i_size_read(inode) - off;
3621 if ((keep_size == true) || (i_size_read(inode) >= off + len)) {
3623 * At this point, we are trying to fallocate an internal
3624 * regions of a sparse file. Since smb2 does not have a
3625 * fallocate command we have two otions on how to emulate this.
3626 * We can either turn the entire file to become non-sparse
3627 * which we only do if the fallocate is for virtually
3628 * the whole file, or we can overwrite the region with zeroes
3629 * using SMB2_write, which could be prohibitevly expensive
3633 * We are only trying to fallocate a small region so
3634 * just write it with zero.
3636 if (len <= 1024 * 1024) {
3637 rc = smb3_simple_fallocate_range(xid, tcon, cfile,
3643 * Check if falloc starts within first few pages of file
3644 * and ends within a few pages of the end of file to
3645 * ensure that most of file is being forced to be
3646 * fallocated now. If so then setting whole file sparse
3647 * ie potentially making a few extra pages at the beginning
3648 * or end of the file non-sparse via set_sparse is harmless.
3650 if ((off > 8192) || (off + len + 8192 < i_size_read(inode))) {
3656 smb2_set_sparse(xid, tcon, cfile, inode, false);
3661 trace_smb3_falloc_err(xid, cfile->fid.persistent_fid, tcon->tid,
3662 tcon->ses->Suid, off, len, rc);
3664 trace_smb3_falloc_done(xid, cfile->fid.persistent_fid, tcon->tid,
3665 tcon->ses->Suid, off, len);
3671 static long smb3_collapse_range(struct file *file, struct cifs_tcon *tcon,
3672 loff_t off, loff_t len)
3676 struct inode *inode = file_inode(file);
3677 struct cifsFileInfo *cfile = file->private_data;
3678 struct cifsInodeInfo *cifsi = CIFS_I(inode);
3686 old_eof = i_size_read(inode);
3687 if ((off >= old_eof) ||
3688 off + len >= old_eof) {
3693 filemap_invalidate_lock(inode->i_mapping);
3694 rc = filemap_write_and_wait_range(inode->i_mapping, off, old_eof - 1);
3698 truncate_pagecache_range(inode, off, old_eof);
3700 rc = smb2_copychunk_range(xid, cfile, cfile, off + len,
3701 old_eof - off - len, off);
3705 eof = cpu_to_le64(old_eof - len);
3706 rc = SMB2_set_eof(xid, tcon, cfile->fid.persistent_fid,
3707 cfile->fid.volatile_fid, cfile->pid, &eof);
3713 cifsi->server_eof = i_size_read(inode) - len;
3714 truncate_setsize(inode, cifsi->server_eof);
3715 fscache_resize_cookie(cifs_inode_cookie(inode), cifsi->server_eof);
3717 filemap_invalidate_unlock(inode->i_mapping);
3719 inode_unlock(inode);
3724 static long smb3_insert_range(struct file *file, struct cifs_tcon *tcon,
3725 loff_t off, loff_t len)
3729 struct cifsFileInfo *cfile = file->private_data;
3730 struct inode *inode = file_inode(file);
3732 __u64 count, old_eof;
3738 old_eof = i_size_read(inode);
3739 if (off >= old_eof) {
3744 count = old_eof - off;
3745 eof = cpu_to_le64(old_eof + len);
3747 filemap_invalidate_lock(inode->i_mapping);
3748 rc = filemap_write_and_wait_range(inode->i_mapping, off, old_eof + len - 1);
3751 truncate_pagecache_range(inode, off, old_eof);
3753 rc = SMB2_set_eof(xid, tcon, cfile->fid.persistent_fid,
3754 cfile->fid.volatile_fid, cfile->pid, &eof);
3758 truncate_setsize(inode, old_eof + len);
3759 fscache_resize_cookie(cifs_inode_cookie(inode), i_size_read(inode));
3761 rc = smb2_copychunk_range(xid, cfile, cfile, off, count, off + len);
3765 rc = smb3_zero_data(file, tcon, off, len, xid);
3771 filemap_invalidate_unlock(inode->i_mapping);
3773 inode_unlock(inode);
3778 static loff_t smb3_llseek(struct file *file, struct cifs_tcon *tcon, loff_t offset, int whence)
3780 struct cifsFileInfo *wrcfile, *cfile = file->private_data;
3781 struct cifsInodeInfo *cifsi;
3782 struct inode *inode;
3784 struct file_allocated_range_buffer in_data, *out_data = NULL;
3788 if (whence != SEEK_HOLE && whence != SEEK_DATA)
3789 return generic_file_llseek(file, offset, whence);
3791 inode = d_inode(cfile->dentry);
3792 cifsi = CIFS_I(inode);
3794 if (offset < 0 || offset >= i_size_read(inode))
3799 * We need to be sure that all dirty pages are written as they
3800 * might fill holes on the server.
3801 * Note that we also MUST flush any written pages since at least
3802 * some servers (Windows2016) will not reflect recent writes in
3803 * QUERY_ALLOCATED_RANGES until SMB2_flush is called.
3805 wrcfile = find_writable_file(cifsi, FIND_WR_ANY);
3807 filemap_write_and_wait(inode->i_mapping);
3808 smb2_flush_file(xid, tcon, &wrcfile->fid);
3809 cifsFileInfo_put(wrcfile);
3812 if (!(cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE)) {
3813 if (whence == SEEK_HOLE)
3814 offset = i_size_read(inode);
3818 in_data.file_offset = cpu_to_le64(offset);
3819 in_data.length = cpu_to_le64(i_size_read(inode));
3821 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
3822 cfile->fid.volatile_fid,
3823 FSCTL_QUERY_ALLOCATED_RANGES,
3824 (char *)&in_data, sizeof(in_data),
3825 sizeof(struct file_allocated_range_buffer),
3826 (char **)&out_data, &out_data_len);
3832 if (whence == SEEK_HOLE && out_data_len == 0)
3835 if (whence == SEEK_DATA && out_data_len == 0) {
3840 if (out_data_len < sizeof(struct file_allocated_range_buffer)) {
3844 if (whence == SEEK_DATA) {
3845 offset = le64_to_cpu(out_data->file_offset);
3848 if (offset < le64_to_cpu(out_data->file_offset))
3851 offset = le64_to_cpu(out_data->file_offset) + le64_to_cpu(out_data->length);
3857 return vfs_setpos(file, offset, inode->i_sb->s_maxbytes);
3862 static int smb3_fiemap(struct cifs_tcon *tcon,
3863 struct cifsFileInfo *cfile,
3864 struct fiemap_extent_info *fei, u64 start, u64 len)
3867 struct file_allocated_range_buffer in_data, *out_data;
3869 int i, num, rc, flags, last_blob;
3872 rc = fiemap_prep(d_inode(cfile->dentry), fei, start, &len, 0);
3878 in_data.file_offset = cpu_to_le64(start);
3879 in_data.length = cpu_to_le64(len);
3881 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
3882 cfile->fid.volatile_fid,
3883 FSCTL_QUERY_ALLOCATED_RANGES,
3884 (char *)&in_data, sizeof(in_data),
3885 1024 * sizeof(struct file_allocated_range_buffer),
3886 (char **)&out_data, &out_data_len);
3895 if (out_data_len && out_data_len < sizeof(struct file_allocated_range_buffer)) {
3899 if (out_data_len % sizeof(struct file_allocated_range_buffer)) {
3904 num = out_data_len / sizeof(struct file_allocated_range_buffer);
3905 for (i = 0; i < num; i++) {
3907 if (i == num - 1 && last_blob)
3908 flags |= FIEMAP_EXTENT_LAST;
3910 rc = fiemap_fill_next_extent(fei,
3911 le64_to_cpu(out_data[i].file_offset),
3912 le64_to_cpu(out_data[i].file_offset),
3913 le64_to_cpu(out_data[i].length),
3924 next = le64_to_cpu(out_data[num - 1].file_offset) +
3925 le64_to_cpu(out_data[num - 1].length);
3926 len = len - (next - start);
3937 static long smb3_fallocate(struct file *file, struct cifs_tcon *tcon, int mode,
3938 loff_t off, loff_t len)
3940 /* KEEP_SIZE already checked for by do_fallocate */
3941 if (mode & FALLOC_FL_PUNCH_HOLE)
3942 return smb3_punch_hole(file, tcon, off, len);
3943 else if (mode & FALLOC_FL_ZERO_RANGE) {
3944 if (mode & FALLOC_FL_KEEP_SIZE)
3945 return smb3_zero_range(file, tcon, off, len, true);
3946 return smb3_zero_range(file, tcon, off, len, false);
3947 } else if (mode == FALLOC_FL_KEEP_SIZE)
3948 return smb3_simple_falloc(file, tcon, off, len, true);
3949 else if (mode == FALLOC_FL_COLLAPSE_RANGE)
3950 return smb3_collapse_range(file, tcon, off, len);
3951 else if (mode == FALLOC_FL_INSERT_RANGE)
3952 return smb3_insert_range(file, tcon, off, len);
3954 return smb3_simple_falloc(file, tcon, off, len, false);
3960 smb2_downgrade_oplock(struct TCP_Server_Info *server,
3961 struct cifsInodeInfo *cinode, __u32 oplock,
3962 unsigned int epoch, bool *purge_cache)
3964 server->ops->set_oplock_level(cinode, oplock, 0, NULL);
3968 smb21_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
3969 unsigned int epoch, bool *purge_cache);
3972 smb3_downgrade_oplock(struct TCP_Server_Info *server,
3973 struct cifsInodeInfo *cinode, __u32 oplock,
3974 unsigned int epoch, bool *purge_cache)
3976 unsigned int old_state = cinode->oplock;
3977 unsigned int old_epoch = cinode->epoch;
3978 unsigned int new_state;
3980 if (epoch > old_epoch) {
3981 smb21_set_oplock_level(cinode, oplock, 0, NULL);
3982 cinode->epoch = epoch;
3985 new_state = cinode->oplock;
3986 *purge_cache = false;
3988 if ((old_state & CIFS_CACHE_READ_FLG) != 0 &&
3989 (new_state & CIFS_CACHE_READ_FLG) == 0)
3990 *purge_cache = true;
3991 else if (old_state == new_state && (epoch - old_epoch > 1))
3992 *purge_cache = true;
3996 smb2_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
3997 unsigned int epoch, bool *purge_cache)
4000 cinode->lease_granted = false;
4001 if (oplock == SMB2_OPLOCK_LEVEL_NOCHANGE)
4003 if (oplock == SMB2_OPLOCK_LEVEL_BATCH) {
4004 cinode->oplock = CIFS_CACHE_RHW_FLG;
4005 cifs_dbg(FYI, "Batch Oplock granted on inode %p\n",
4006 &cinode->netfs.inode);
4007 } else if (oplock == SMB2_OPLOCK_LEVEL_EXCLUSIVE) {
4008 cinode->oplock = CIFS_CACHE_RW_FLG;
4009 cifs_dbg(FYI, "Exclusive Oplock granted on inode %p\n",
4010 &cinode->netfs.inode);
4011 } else if (oplock == SMB2_OPLOCK_LEVEL_II) {
4012 cinode->oplock = CIFS_CACHE_READ_FLG;
4013 cifs_dbg(FYI, "Level II Oplock granted on inode %p\n",
4014 &cinode->netfs.inode);
4020 smb21_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
4021 unsigned int epoch, bool *purge_cache)
4023 char message[5] = {0};
4024 unsigned int new_oplock = 0;
4027 cinode->lease_granted = true;
4028 if (oplock == SMB2_OPLOCK_LEVEL_NOCHANGE)
4031 /* Check if the server granted an oplock rather than a lease */
4032 if (oplock & SMB2_OPLOCK_LEVEL_EXCLUSIVE)
4033 return smb2_set_oplock_level(cinode, oplock, epoch,
4036 if (oplock & SMB2_LEASE_READ_CACHING_HE) {
4037 new_oplock |= CIFS_CACHE_READ_FLG;
4038 strcat(message, "R");
4040 if (oplock & SMB2_LEASE_HANDLE_CACHING_HE) {
4041 new_oplock |= CIFS_CACHE_HANDLE_FLG;
4042 strcat(message, "H");
4044 if (oplock & SMB2_LEASE_WRITE_CACHING_HE) {
4045 new_oplock |= CIFS_CACHE_WRITE_FLG;
4046 strcat(message, "W");
4049 strncpy(message, "None", sizeof(message));
4051 cinode->oplock = new_oplock;
4052 cifs_dbg(FYI, "%s Lease granted on inode %p\n", message,
4053 &cinode->netfs.inode);
4057 smb3_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
4058 unsigned int epoch, bool *purge_cache)
4060 unsigned int old_oplock = cinode->oplock;
4062 smb21_set_oplock_level(cinode, oplock, epoch, purge_cache);
4065 *purge_cache = false;
4066 if (old_oplock == CIFS_CACHE_READ_FLG) {
4067 if (cinode->oplock == CIFS_CACHE_READ_FLG &&
4068 (epoch - cinode->epoch > 0))
4069 *purge_cache = true;
4070 else if (cinode->oplock == CIFS_CACHE_RH_FLG &&
4071 (epoch - cinode->epoch > 1))
4072 *purge_cache = true;
4073 else if (cinode->oplock == CIFS_CACHE_RHW_FLG &&
4074 (epoch - cinode->epoch > 1))
4075 *purge_cache = true;
4076 else if (cinode->oplock == 0 &&
4077 (epoch - cinode->epoch > 0))
4078 *purge_cache = true;
4079 } else if (old_oplock == CIFS_CACHE_RH_FLG) {
4080 if (cinode->oplock == CIFS_CACHE_RH_FLG &&
4081 (epoch - cinode->epoch > 0))
4082 *purge_cache = true;
4083 else if (cinode->oplock == CIFS_CACHE_RHW_FLG &&
4084 (epoch - cinode->epoch > 1))
4085 *purge_cache = true;
4087 cinode->epoch = epoch;
4091 #ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY
4093 smb2_is_read_op(__u32 oplock)
4095 return oplock == SMB2_OPLOCK_LEVEL_II;
4097 #endif /* CIFS_ALLOW_INSECURE_LEGACY */
4100 smb21_is_read_op(__u32 oplock)
4102 return (oplock & SMB2_LEASE_READ_CACHING_HE) &&
4103 !(oplock & SMB2_LEASE_WRITE_CACHING_HE);
4107 map_oplock_to_lease(u8 oplock)
4109 if (oplock == SMB2_OPLOCK_LEVEL_EXCLUSIVE)
4110 return SMB2_LEASE_WRITE_CACHING_LE | SMB2_LEASE_READ_CACHING_LE;
4111 else if (oplock == SMB2_OPLOCK_LEVEL_II)
4112 return SMB2_LEASE_READ_CACHING_LE;
4113 else if (oplock == SMB2_OPLOCK_LEVEL_BATCH)
4114 return SMB2_LEASE_HANDLE_CACHING_LE | SMB2_LEASE_READ_CACHING_LE |
4115 SMB2_LEASE_WRITE_CACHING_LE;
4120 smb2_create_lease_buf(u8 *lease_key, u8 oplock)
4122 struct create_lease *buf;
4124 buf = kzalloc(sizeof(struct create_lease), GFP_KERNEL);
4128 memcpy(&buf->lcontext.LeaseKey, lease_key, SMB2_LEASE_KEY_SIZE);
4129 buf->lcontext.LeaseState = map_oplock_to_lease(oplock);
4131 buf->ccontext.DataOffset = cpu_to_le16(offsetof
4132 (struct create_lease, lcontext));
4133 buf->ccontext.DataLength = cpu_to_le32(sizeof(struct lease_context));
4134 buf->ccontext.NameOffset = cpu_to_le16(offsetof
4135 (struct create_lease, Name));
4136 buf->ccontext.NameLength = cpu_to_le16(4);
4137 /* SMB2_CREATE_REQUEST_LEASE is "RqLs" */
4146 smb3_create_lease_buf(u8 *lease_key, u8 oplock)
4148 struct create_lease_v2 *buf;
4150 buf = kzalloc(sizeof(struct create_lease_v2), GFP_KERNEL);
4154 memcpy(&buf->lcontext.LeaseKey, lease_key, SMB2_LEASE_KEY_SIZE);
4155 buf->lcontext.LeaseState = map_oplock_to_lease(oplock);
4157 buf->ccontext.DataOffset = cpu_to_le16(offsetof
4158 (struct create_lease_v2, lcontext));
4159 buf->ccontext.DataLength = cpu_to_le32(sizeof(struct lease_context_v2));
4160 buf->ccontext.NameOffset = cpu_to_le16(offsetof
4161 (struct create_lease_v2, Name));
4162 buf->ccontext.NameLength = cpu_to_le16(4);
4163 /* SMB2_CREATE_REQUEST_LEASE is "RqLs" */
4172 smb2_parse_lease_buf(void *buf, unsigned int *epoch, char *lease_key)
4174 struct create_lease *lc = (struct create_lease *)buf;
4176 *epoch = 0; /* not used */
4177 if (lc->lcontext.LeaseFlags & SMB2_LEASE_FLAG_BREAK_IN_PROGRESS_LE)
4178 return SMB2_OPLOCK_LEVEL_NOCHANGE;
4179 return le32_to_cpu(lc->lcontext.LeaseState);
4183 smb3_parse_lease_buf(void *buf, unsigned int *epoch, char *lease_key)
4185 struct create_lease_v2 *lc = (struct create_lease_v2 *)buf;
4187 *epoch = le16_to_cpu(lc->lcontext.Epoch);
4188 if (lc->lcontext.LeaseFlags & SMB2_LEASE_FLAG_BREAK_IN_PROGRESS_LE)
4189 return SMB2_OPLOCK_LEVEL_NOCHANGE;
4191 memcpy(lease_key, &lc->lcontext.LeaseKey, SMB2_LEASE_KEY_SIZE);
4192 return le32_to_cpu(lc->lcontext.LeaseState);
4196 smb2_wp_retry_size(struct inode *inode)
4198 return min_t(unsigned int, CIFS_SB(inode->i_sb)->ctx->wsize,
4199 SMB2_MAX_BUFFER_SIZE);
4203 smb2_dir_needs_close(struct cifsFileInfo *cfile)
4205 return !cfile->invalidHandle;
4209 fill_transform_hdr(struct smb2_transform_hdr *tr_hdr, unsigned int orig_len,
4210 struct smb_rqst *old_rq, __le16 cipher_type)
4212 struct smb2_hdr *shdr =
4213 (struct smb2_hdr *)old_rq->rq_iov[0].iov_base;
4215 memset(tr_hdr, 0, sizeof(struct smb2_transform_hdr));
4216 tr_hdr->ProtocolId = SMB2_TRANSFORM_PROTO_NUM;
4217 tr_hdr->OriginalMessageSize = cpu_to_le32(orig_len);
4218 tr_hdr->Flags = cpu_to_le16(0x01);
4219 if ((cipher_type == SMB2_ENCRYPTION_AES128_GCM) ||
4220 (cipher_type == SMB2_ENCRYPTION_AES256_GCM))
4221 get_random_bytes(&tr_hdr->Nonce, SMB3_AES_GCM_NONCE);
4223 get_random_bytes(&tr_hdr->Nonce, SMB3_AES_CCM_NONCE);
4224 memcpy(&tr_hdr->SessionId, &shdr->SessionId, 8);
4227 static void *smb2_aead_req_alloc(struct crypto_aead *tfm, const struct smb_rqst *rqst,
4228 int num_rqst, const u8 *sig, u8 **iv,
4229 struct aead_request **req, struct sg_table *sgt,
4230 unsigned int *num_sgs, size_t *sensitive_size)
4232 unsigned int req_size = sizeof(**req) + crypto_aead_reqsize(tfm);
4233 unsigned int iv_size = crypto_aead_ivsize(tfm);
4237 *num_sgs = cifs_get_num_sgs(rqst, num_rqst, sig);
4238 if (IS_ERR_VALUE((long)(int)*num_sgs))
4239 return ERR_PTR(*num_sgs);
4242 len += crypto_aead_alignmask(tfm) & ~(crypto_tfm_ctx_alignment() - 1);
4243 len = ALIGN(len, crypto_tfm_ctx_alignment());
4245 len = ALIGN(len, __alignof__(struct scatterlist));
4246 len += array_size(*num_sgs, sizeof(struct scatterlist));
4247 *sensitive_size = len;
4249 p = kvzalloc(len, GFP_NOFS);
4251 return ERR_PTR(-ENOMEM);
4253 *iv = (u8 *)PTR_ALIGN(p, crypto_aead_alignmask(tfm) + 1);
4254 *req = (struct aead_request *)PTR_ALIGN(*iv + iv_size,
4255 crypto_tfm_ctx_alignment());
4256 sgt->sgl = (struct scatterlist *)PTR_ALIGN((u8 *)*req + req_size,
4257 __alignof__(struct scatterlist));
4261 static void *smb2_get_aead_req(struct crypto_aead *tfm, struct smb_rqst *rqst,
4262 int num_rqst, const u8 *sig, u8 **iv,
4263 struct aead_request **req, struct scatterlist **sgl,
4264 size_t *sensitive_size)
4266 struct sg_table sgtable = {};
4267 unsigned int skip, num_sgs, i, j;
4271 p = smb2_aead_req_alloc(tfm, rqst, num_rqst, sig, iv, req, &sgtable,
4272 &num_sgs, sensitive_size);
4276 sg_init_marker(sgtable.sgl, num_sgs);
4279 * The first rqst has a transform header where the
4280 * first 20 bytes are not part of the encrypted blob.
4284 for (i = 0; i < num_rqst; i++) {
4285 struct iov_iter *iter = &rqst[i].rq_iter;
4286 size_t count = iov_iter_count(iter);
4288 for (j = 0; j < rqst[i].rq_nvec; j++) {
4289 cifs_sg_set_buf(&sgtable,
4290 rqst[i].rq_iov[j].iov_base + skip,
4291 rqst[i].rq_iov[j].iov_len - skip);
4293 /* See the above comment on the 'skip' assignment */
4296 sgtable.orig_nents = sgtable.nents;
4298 rc = extract_iter_to_sg(iter, count, &sgtable,
4299 num_sgs - sgtable.nents, 0);
4300 iov_iter_revert(iter, rc);
4301 sgtable.orig_nents = sgtable.nents;
4304 cifs_sg_set_buf(&sgtable, sig, SMB2_SIGNATURE_SIZE);
4305 sg_mark_end(&sgtable.sgl[sgtable.nents - 1]);
4311 smb2_get_enc_key(struct TCP_Server_Info *server, __u64 ses_id, int enc, u8 *key)
4313 struct TCP_Server_Info *pserver;
4314 struct cifs_ses *ses;
4317 /* If server is a channel, select the primary channel */
4318 pserver = SERVER_IS_CHAN(server) ? server->primary_server : server;
4320 spin_lock(&cifs_tcp_ses_lock);
4321 list_for_each_entry(ses, &pserver->smb_ses_list, smb_ses_list) {
4322 if (ses->Suid == ses_id) {
4323 spin_lock(&ses->ses_lock);
4324 ses_enc_key = enc ? ses->smb3encryptionkey :
4325 ses->smb3decryptionkey;
4326 memcpy(key, ses_enc_key, SMB3_ENC_DEC_KEY_SIZE);
4327 spin_unlock(&ses->ses_lock);
4328 spin_unlock(&cifs_tcp_ses_lock);
4332 spin_unlock(&cifs_tcp_ses_lock);
4334 trace_smb3_ses_not_found(ses_id);
4339 * Encrypt or decrypt @rqst message. @rqst[0] has the following format:
4340 * iov[0] - transform header (associate data),
4341 * iov[1-N] - SMB2 header and pages - data to encrypt.
4342 * On success return encrypted data in iov[1-N] and pages, leave iov[0]
4346 crypt_message(struct TCP_Server_Info *server, int num_rqst,
4347 struct smb_rqst *rqst, int enc)
4349 struct smb2_transform_hdr *tr_hdr =
4350 (struct smb2_transform_hdr *)rqst[0].rq_iov[0].iov_base;
4351 unsigned int assoc_data_len = sizeof(struct smb2_transform_hdr) - 20;
4353 struct scatterlist *sg;
4354 u8 sign[SMB2_SIGNATURE_SIZE] = {};
4355 u8 key[SMB3_ENC_DEC_KEY_SIZE];
4356 struct aead_request *req;
4358 DECLARE_CRYPTO_WAIT(wait);
4359 struct crypto_aead *tfm;
4360 unsigned int crypt_len = le32_to_cpu(tr_hdr->OriginalMessageSize);
4362 size_t sensitive_size;
4364 rc = smb2_get_enc_key(server, le64_to_cpu(tr_hdr->SessionId), enc, key);
4366 cifs_server_dbg(FYI, "%s: Could not get %scryption key. sid: 0x%llx\n", __func__,
4367 enc ? "en" : "de", le64_to_cpu(tr_hdr->SessionId));
4371 rc = smb3_crypto_aead_allocate(server);
4373 cifs_server_dbg(VFS, "%s: crypto alloc failed\n", __func__);
4377 tfm = enc ? server->secmech.enc : server->secmech.dec;
4379 if ((server->cipher_type == SMB2_ENCRYPTION_AES256_CCM) ||
4380 (server->cipher_type == SMB2_ENCRYPTION_AES256_GCM))
4381 rc = crypto_aead_setkey(tfm, key, SMB3_GCM256_CRYPTKEY_SIZE);
4383 rc = crypto_aead_setkey(tfm, key, SMB3_GCM128_CRYPTKEY_SIZE);
4386 cifs_server_dbg(VFS, "%s: Failed to set aead key %d\n", __func__, rc);
4390 rc = crypto_aead_setauthsize(tfm, SMB2_SIGNATURE_SIZE);
4392 cifs_server_dbg(VFS, "%s: Failed to set authsize %d\n", __func__, rc);
4396 creq = smb2_get_aead_req(tfm, rqst, num_rqst, sign, &iv, &req, &sg,
4399 return PTR_ERR(creq);
4402 memcpy(sign, &tr_hdr->Signature, SMB2_SIGNATURE_SIZE);
4403 crypt_len += SMB2_SIGNATURE_SIZE;
4406 if ((server->cipher_type == SMB2_ENCRYPTION_AES128_GCM) ||
4407 (server->cipher_type == SMB2_ENCRYPTION_AES256_GCM))
4408 memcpy(iv, (char *)tr_hdr->Nonce, SMB3_AES_GCM_NONCE);
4411 memcpy(iv + 1, (char *)tr_hdr->Nonce, SMB3_AES_CCM_NONCE);
4414 aead_request_set_tfm(req, tfm);
4415 aead_request_set_crypt(req, sg, sg, crypt_len, iv);
4416 aead_request_set_ad(req, assoc_data_len);
4418 aead_request_set_callback(req, CRYPTO_TFM_REQ_MAY_BACKLOG,
4419 crypto_req_done, &wait);
4421 rc = crypto_wait_req(enc ? crypto_aead_encrypt(req)
4422 : crypto_aead_decrypt(req), &wait);
4425 memcpy(&tr_hdr->Signature, sign, SMB2_SIGNATURE_SIZE);
4427 kvfree_sensitive(creq, sensitive_size);
4432 * Clear a read buffer, discarding the folios which have XA_MARK_0 set.
4434 static void cifs_clear_xarray_buffer(struct xarray *buffer)
4436 struct folio *folio;
4438 XA_STATE(xas, buffer, 0);
4441 xas_for_each_marked(&xas, folio, ULONG_MAX, XA_MARK_0) {
4449 smb3_free_compound_rqst(int num_rqst, struct smb_rqst *rqst)
4453 for (i = 0; i < num_rqst; i++)
4454 if (!xa_empty(&rqst[i].rq_buffer))
4455 cifs_clear_xarray_buffer(&rqst[i].rq_buffer);
4459 * This function will initialize new_rq and encrypt the content.
4460 * The first entry, new_rq[0], only contains a single iov which contains
4461 * a smb2_transform_hdr and is pre-allocated by the caller.
4462 * This function then populates new_rq[1+] with the content from olq_rq[0+].
4464 * The end result is an array of smb_rqst structures where the first structure
4465 * only contains a single iov for the transform header which we then can pass
4466 * to crypt_message().
4468 * new_rq[0].rq_iov[0] : smb2_transform_hdr pre-allocated by the caller
4469 * new_rq[1+].rq_iov[*] == old_rq[0+].rq_iov[*] : SMB2/3 requests
4472 smb3_init_transform_rq(struct TCP_Server_Info *server, int num_rqst,
4473 struct smb_rqst *new_rq, struct smb_rqst *old_rq)
4475 struct smb2_transform_hdr *tr_hdr = new_rq[0].rq_iov[0].iov_base;
4477 unsigned int orig_len = 0;
4481 for (i = 1; i < num_rqst; i++) {
4482 struct smb_rqst *old = &old_rq[i - 1];
4483 struct smb_rqst *new = &new_rq[i];
4484 struct xarray *buffer = &new->rq_buffer;
4485 size_t size = iov_iter_count(&old->rq_iter), seg, copied = 0;
4487 orig_len += smb_rqst_len(server, old);
4488 new->rq_iov = old->rq_iov;
4489 new->rq_nvec = old->rq_nvec;
4494 unsigned int npages = DIV_ROUND_UP(size, PAGE_SIZE);
4496 for (j = 0; j < npages; j++) {
4500 page = alloc_page(GFP_KERNEL|__GFP_HIGHMEM);
4504 o = xa_store(buffer, j, page, GFP_KERNEL);
4511 xa_set_mark(buffer, j, XA_MARK_0);
4513 seg = min_t(size_t, size - copied, PAGE_SIZE);
4514 if (copy_page_from_iter(page, 0, seg, &old->rq_iter) != seg) {
4520 iov_iter_xarray(&new->rq_iter, ITER_SOURCE,
4522 new->rq_iter_size = size;
4526 /* fill the 1st iov with a transform header */
4527 fill_transform_hdr(tr_hdr, orig_len, old_rq, server->cipher_type);
4529 rc = crypt_message(server, num_rqst, new_rq, 1);
4530 cifs_dbg(FYI, "Encrypt message returned %d\n", rc);
4537 smb3_free_compound_rqst(num_rqst - 1, &new_rq[1]);
4542 smb3_is_transform_hdr(void *buf)
4544 struct smb2_transform_hdr *trhdr = buf;
4546 return trhdr->ProtocolId == SMB2_TRANSFORM_PROTO_NUM;
4550 decrypt_raw_data(struct TCP_Server_Info *server, char *buf,
4551 unsigned int buf_data_size, struct iov_iter *iter,
4555 struct smb_rqst rqst = {NULL};
4556 size_t iter_size = 0;
4559 iov[0].iov_base = buf;
4560 iov[0].iov_len = sizeof(struct smb2_transform_hdr);
4561 iov[1].iov_base = buf + sizeof(struct smb2_transform_hdr);
4562 iov[1].iov_len = buf_data_size;
4567 rqst.rq_iter = *iter;
4568 rqst.rq_iter_size = iov_iter_count(iter);
4569 iter_size = iov_iter_count(iter);
4572 rc = crypt_message(server, 1, &rqst, 0);
4573 cifs_dbg(FYI, "Decrypt message returned %d\n", rc);
4578 memmove(buf, iov[1].iov_base, buf_data_size);
4581 server->total_read = buf_data_size + iter_size;
4587 cifs_copy_pages_to_iter(struct xarray *pages, unsigned int data_size,
4588 unsigned int skip, struct iov_iter *iter)
4591 unsigned long index;
4593 xa_for_each(pages, index, page) {
4594 size_t n, len = min_t(unsigned int, PAGE_SIZE - skip, data_size);
4596 n = copy_page_to_iter(page, skip, len, iter);
4598 cifs_dbg(VFS, "%s: something went wrong\n", __func__);
4609 handle_read_data(struct TCP_Server_Info *server, struct mid_q_entry *mid,
4610 char *buf, unsigned int buf_len, struct xarray *pages,
4611 unsigned int pages_len, bool is_offloaded)
4613 unsigned int data_offset;
4614 unsigned int data_len;
4615 unsigned int cur_off;
4616 unsigned int cur_page_idx;
4617 unsigned int pad_len;
4618 struct cifs_readdata *rdata = mid->callback_data;
4619 struct smb2_hdr *shdr = (struct smb2_hdr *)buf;
4621 bool use_rdma_mr = false;
4623 if (shdr->Command != SMB2_READ) {
4624 cifs_server_dbg(VFS, "only big read responses are supported\n");
4628 if (server->ops->is_session_expired &&
4629 server->ops->is_session_expired(buf)) {
4631 cifs_reconnect(server, true);
4635 if (server->ops->is_status_pending &&
4636 server->ops->is_status_pending(buf, server))
4639 /* set up first two iov to get credits */
4640 rdata->iov[0].iov_base = buf;
4641 rdata->iov[0].iov_len = 0;
4642 rdata->iov[1].iov_base = buf;
4643 rdata->iov[1].iov_len =
4644 min_t(unsigned int, buf_len, server->vals->read_rsp_size);
4645 cifs_dbg(FYI, "0: iov_base=%p iov_len=%zu\n",
4646 rdata->iov[0].iov_base, rdata->iov[0].iov_len);
4647 cifs_dbg(FYI, "1: iov_base=%p iov_len=%zu\n",
4648 rdata->iov[1].iov_base, rdata->iov[1].iov_len);
4650 rdata->result = server->ops->map_error(buf, true);
4651 if (rdata->result != 0) {
4652 cifs_dbg(FYI, "%s: server returned error %d\n",
4653 __func__, rdata->result);
4654 /* normal error on read response */
4656 mid->mid_state = MID_RESPONSE_RECEIVED;
4658 dequeue_mid(mid, false);
4662 data_offset = server->ops->read_data_offset(buf);
4663 #ifdef CONFIG_CIFS_SMB_DIRECT
4664 use_rdma_mr = rdata->mr;
4666 data_len = server->ops->read_data_length(buf, use_rdma_mr);
4668 if (data_offset < server->vals->read_rsp_size) {
4670 * win2k8 sometimes sends an offset of 0 when the read
4671 * is beyond the EOF. Treat it as if the data starts just after
4674 cifs_dbg(FYI, "%s: data offset (%u) inside read response header\n",
4675 __func__, data_offset);
4676 data_offset = server->vals->read_rsp_size;
4677 } else if (data_offset > MAX_CIFS_SMALL_BUFFER_SIZE) {
4678 /* data_offset is beyond the end of smallbuf */
4679 cifs_dbg(FYI, "%s: data offset (%u) beyond end of smallbuf\n",
4680 __func__, data_offset);
4681 rdata->result = -EIO;
4683 mid->mid_state = MID_RESPONSE_MALFORMED;
4685 dequeue_mid(mid, rdata->result);
4689 pad_len = data_offset - server->vals->read_rsp_size;
4691 if (buf_len <= data_offset) {
4692 /* read response payload is in pages */
4693 cur_page_idx = pad_len / PAGE_SIZE;
4694 cur_off = pad_len % PAGE_SIZE;
4696 if (cur_page_idx != 0) {
4697 /* data offset is beyond the 1st page of response */
4698 cifs_dbg(FYI, "%s: data offset (%u) beyond 1st page of response\n",
4699 __func__, data_offset);
4700 rdata->result = -EIO;
4702 mid->mid_state = MID_RESPONSE_MALFORMED;
4704 dequeue_mid(mid, rdata->result);
4708 if (data_len > pages_len - pad_len) {
4709 /* data_len is corrupt -- discard frame */
4710 rdata->result = -EIO;
4712 mid->mid_state = MID_RESPONSE_MALFORMED;
4714 dequeue_mid(mid, rdata->result);
4718 /* Copy the data to the output I/O iterator. */
4719 rdata->result = cifs_copy_pages_to_iter(pages, pages_len,
4720 cur_off, &rdata->iter);
4721 if (rdata->result != 0) {
4723 mid->mid_state = MID_RESPONSE_MALFORMED;
4725 dequeue_mid(mid, rdata->result);
4728 rdata->got_bytes = pages_len;
4730 } else if (buf_len >= data_offset + data_len) {
4731 /* read response payload is in buf */
4732 WARN_ONCE(pages && !xa_empty(pages),
4733 "read data can be either in buf or in pages");
4734 length = copy_to_iter(buf + data_offset, data_len, &rdata->iter);
4737 rdata->got_bytes = data_len;
4739 /* read response payload cannot be in both buf and pages */
4740 WARN_ONCE(1, "buf can not contain only a part of read data");
4741 rdata->result = -EIO;
4743 mid->mid_state = MID_RESPONSE_MALFORMED;
4745 dequeue_mid(mid, rdata->result);
4750 mid->mid_state = MID_RESPONSE_RECEIVED;
4752 dequeue_mid(mid, false);
4756 struct smb2_decrypt_work {
4757 struct work_struct decrypt;
4758 struct TCP_Server_Info *server;
4759 struct xarray buffer;
4765 static void smb2_decrypt_offload(struct work_struct *work)
4767 struct smb2_decrypt_work *dw = container_of(work,
4768 struct smb2_decrypt_work, decrypt);
4770 struct mid_q_entry *mid;
4771 struct iov_iter iter;
4773 iov_iter_xarray(&iter, ITER_DEST, &dw->buffer, 0, dw->len);
4774 rc = decrypt_raw_data(dw->server, dw->buf, dw->server->vals->read_rsp_size,
4777 cifs_dbg(VFS, "error decrypting rc=%d\n", rc);
4781 dw->server->lstrp = jiffies;
4782 mid = smb2_find_dequeue_mid(dw->server, dw->buf);
4784 cifs_dbg(FYI, "mid not found\n");
4786 mid->decrypted = true;
4787 rc = handle_read_data(dw->server, mid, dw->buf,
4788 dw->server->vals->read_rsp_size,
4789 &dw->buffer, dw->len,
4792 #ifdef CONFIG_CIFS_STATS2
4793 mid->when_received = jiffies;
4795 if (dw->server->ops->is_network_name_deleted)
4796 dw->server->ops->is_network_name_deleted(dw->buf,
4801 spin_lock(&dw->server->srv_lock);
4802 if (dw->server->tcpStatus == CifsNeedReconnect) {
4803 spin_lock(&dw->server->mid_lock);
4804 mid->mid_state = MID_RETRY_NEEDED;
4805 spin_unlock(&dw->server->mid_lock);
4806 spin_unlock(&dw->server->srv_lock);
4809 spin_lock(&dw->server->mid_lock);
4810 mid->mid_state = MID_REQUEST_SUBMITTED;
4811 mid->mid_flags &= ~(MID_DELETED);
4812 list_add_tail(&mid->qhead,
4813 &dw->server->pending_mid_q);
4814 spin_unlock(&dw->server->mid_lock);
4815 spin_unlock(&dw->server->srv_lock);
4822 cifs_clear_xarray_buffer(&dw->buffer);
4823 cifs_small_buf_release(dw->buf);
4829 receive_encrypted_read(struct TCP_Server_Info *server, struct mid_q_entry **mid,
4833 char *buf = server->smallbuf;
4834 struct smb2_transform_hdr *tr_hdr = (struct smb2_transform_hdr *)buf;
4835 struct iov_iter iter;
4836 unsigned int len, npages;
4837 unsigned int buflen = server->pdu_size;
4840 struct smb2_decrypt_work *dw;
4842 dw = kzalloc(sizeof(struct smb2_decrypt_work), GFP_KERNEL);
4845 xa_init(&dw->buffer);
4846 INIT_WORK(&dw->decrypt, smb2_decrypt_offload);
4847 dw->server = server;
4850 len = min_t(unsigned int, buflen, server->vals->read_rsp_size +
4851 sizeof(struct smb2_transform_hdr)) - HEADER_SIZE(server) + 1;
4853 rc = cifs_read_from_socket(server, buf + HEADER_SIZE(server) - 1, len);
4856 server->total_read += rc;
4858 len = le32_to_cpu(tr_hdr->OriginalMessageSize) -
4859 server->vals->read_rsp_size;
4861 npages = DIV_ROUND_UP(len, PAGE_SIZE);
4864 for (; i < npages; i++) {
4867 page = alloc_page(GFP_KERNEL|__GFP_HIGHMEM);
4871 old = xa_store(&dw->buffer, i, page, GFP_KERNEL);
4872 if (xa_is_err(old)) {
4877 xa_set_mark(&dw->buffer, i, XA_MARK_0);
4880 iov_iter_xarray(&iter, ITER_DEST, &dw->buffer, 0, npages * PAGE_SIZE);
4882 /* Read the data into the buffer and clear excess bufferage. */
4883 rc = cifs_read_iter_from_socket(server, &iter, dw->len);
4887 server->total_read += rc;
4888 if (rc < npages * PAGE_SIZE)
4889 iov_iter_zero(npages * PAGE_SIZE - rc, &iter);
4890 iov_iter_revert(&iter, npages * PAGE_SIZE);
4891 iov_iter_truncate(&iter, dw->len);
4893 rc = cifs_discard_remaining_data(server);
4898 * For large reads, offload to different thread for better performance,
4899 * use more cores decrypting which can be expensive
4902 if ((server->min_offload) && (server->in_flight > 1) &&
4903 (server->pdu_size >= server->min_offload)) {
4904 dw->buf = server->smallbuf;
4905 server->smallbuf = (char *)cifs_small_buf_get();
4907 queue_work(decrypt_wq, &dw->decrypt);
4908 *num_mids = 0; /* worker thread takes care of finding mid */
4912 rc = decrypt_raw_data(server, buf, server->vals->read_rsp_size,
4917 *mid = smb2_find_mid(server, buf);
4919 cifs_dbg(FYI, "mid not found\n");
4921 cifs_dbg(FYI, "mid found\n");
4922 (*mid)->decrypted = true;
4923 rc = handle_read_data(server, *mid, buf,
4924 server->vals->read_rsp_size,
4925 &dw->buffer, dw->len, false);
4927 if (server->ops->is_network_name_deleted) {
4928 server->ops->is_network_name_deleted(buf,
4935 cifs_clear_xarray_buffer(&dw->buffer);
4940 cifs_discard_remaining_data(server);
4945 receive_encrypted_standard(struct TCP_Server_Info *server,
4946 struct mid_q_entry **mids, char **bufs,
4950 char *buf = server->smallbuf;
4951 struct smb2_hdr *shdr;
4952 unsigned int pdu_length = server->pdu_size;
4953 unsigned int buf_size;
4954 unsigned int next_cmd;
4955 struct mid_q_entry *mid_entry;
4957 char *next_buffer = NULL;
4961 /* switch to large buffer if too big for a small one */
4962 if (pdu_length > MAX_CIFS_SMALL_BUFFER_SIZE) {
4963 server->large_buf = true;
4964 memcpy(server->bigbuf, buf, server->total_read);
4965 buf = server->bigbuf;
4968 /* now read the rest */
4969 length = cifs_read_from_socket(server, buf + HEADER_SIZE(server) - 1,
4970 pdu_length - HEADER_SIZE(server) + 1);
4973 server->total_read += length;
4975 buf_size = pdu_length - sizeof(struct smb2_transform_hdr);
4976 length = decrypt_raw_data(server, buf, buf_size, NULL, false);
4980 next_is_large = server->large_buf;
4982 shdr = (struct smb2_hdr *)buf;
4983 next_cmd = le32_to_cpu(shdr->NextCommand);
4985 if (WARN_ON_ONCE(next_cmd > pdu_length))
4988 next_buffer = (char *)cifs_buf_get();
4990 next_buffer = (char *)cifs_small_buf_get();
4991 memcpy(next_buffer, buf + next_cmd, pdu_length - next_cmd);
4994 mid_entry = smb2_find_mid(server, buf);
4995 if (mid_entry == NULL)
4996 cifs_dbg(FYI, "mid not found\n");
4998 cifs_dbg(FYI, "mid found\n");
4999 mid_entry->decrypted = true;
5000 mid_entry->resp_buf_size = server->pdu_size;
5003 if (*num_mids >= MAX_COMPOUND) {
5004 cifs_server_dbg(VFS, "too many PDUs in compound\n");
5007 bufs[*num_mids] = buf;
5008 mids[(*num_mids)++] = mid_entry;
5010 if (mid_entry && mid_entry->handle)
5011 ret = mid_entry->handle(server, mid_entry);
5013 ret = cifs_handle_standard(server, mid_entry);
5015 if (ret == 0 && next_cmd) {
5016 pdu_length -= next_cmd;
5017 server->large_buf = next_is_large;
5019 server->bigbuf = buf = next_buffer;
5021 server->smallbuf = buf = next_buffer;
5023 } else if (ret != 0) {
5025 * ret != 0 here means that we didn't get to handle_mid() thus
5026 * server->smallbuf and server->bigbuf are still valid. We need
5027 * to free next_buffer because it is not going to be used
5031 free_rsp_buf(CIFS_LARGE_BUFFER, next_buffer);
5033 free_rsp_buf(CIFS_SMALL_BUFFER, next_buffer);
5040 smb3_receive_transform(struct TCP_Server_Info *server,
5041 struct mid_q_entry **mids, char **bufs, int *num_mids)
5043 char *buf = server->smallbuf;
5044 unsigned int pdu_length = server->pdu_size;
5045 struct smb2_transform_hdr *tr_hdr = (struct smb2_transform_hdr *)buf;
5046 unsigned int orig_len = le32_to_cpu(tr_hdr->OriginalMessageSize);
5048 if (pdu_length < sizeof(struct smb2_transform_hdr) +
5049 sizeof(struct smb2_hdr)) {
5050 cifs_server_dbg(VFS, "Transform message is too small (%u)\n",
5052 cifs_reconnect(server, true);
5053 return -ECONNABORTED;
5056 if (pdu_length < orig_len + sizeof(struct smb2_transform_hdr)) {
5057 cifs_server_dbg(VFS, "Transform message is broken\n");
5058 cifs_reconnect(server, true);
5059 return -ECONNABORTED;
5062 /* TODO: add support for compounds containing READ. */
5063 if (pdu_length > CIFSMaxBufSize + MAX_HEADER_SIZE(server)) {
5064 return receive_encrypted_read(server, &mids[0], num_mids);
5067 return receive_encrypted_standard(server, mids, bufs, num_mids);
5071 smb3_handle_read_data(struct TCP_Server_Info *server, struct mid_q_entry *mid)
5073 char *buf = server->large_buf ? server->bigbuf : server->smallbuf;
5075 return handle_read_data(server, mid, buf, server->pdu_size,
5079 static int smb2_next_header(struct TCP_Server_Info *server, char *buf,
5082 struct smb2_hdr *hdr = (struct smb2_hdr *)buf;
5083 struct smb2_transform_hdr *t_hdr = (struct smb2_transform_hdr *)buf;
5085 if (hdr->ProtocolId == SMB2_TRANSFORM_PROTO_NUM) {
5086 *noff = le32_to_cpu(t_hdr->OriginalMessageSize);
5087 if (unlikely(check_add_overflow(*noff, sizeof(*t_hdr), noff)))
5090 *noff = le32_to_cpu(hdr->NextCommand);
5092 if (unlikely(*noff && *noff < MID_HEADER_SIZE(server)))
5097 int cifs_sfu_make_node(unsigned int xid, struct inode *inode,
5098 struct dentry *dentry, struct cifs_tcon *tcon,
5099 const char *full_path, umode_t mode, dev_t dev)
5101 struct cifs_open_info_data buf = {};
5102 struct TCP_Server_Info *server = tcon->ses->server;
5103 struct cifs_open_parms oparms;
5104 struct cifs_io_parms io_parms = {};
5105 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
5106 struct cifs_fid fid;
5107 unsigned int bytes_written;
5108 struct win_dev *pdev;
5110 __u32 oplock = server->oplocks ? REQ_OPLOCK : 0;
5113 if (!S_ISCHR(mode) && !S_ISBLK(mode) && !S_ISFIFO(mode))
5116 oparms = (struct cifs_open_parms) {
5119 .desired_access = GENERIC_WRITE,
5120 .create_options = cifs_create_options(cifs_sb, CREATE_NOT_DIR |
5121 CREATE_OPTION_SPECIAL),
5122 .disposition = FILE_CREATE,
5127 rc = server->ops->open(xid, &oparms, &oplock, &buf);
5132 * BB Do not bother to decode buf since no local inode yet to put
5133 * timestamps in, but we can reuse it safely.
5135 pdev = (struct win_dev *)&buf.fi;
5136 io_parms.pid = current->tgid;
5137 io_parms.tcon = tcon;
5138 io_parms.length = sizeof(*pdev);
5139 iov[1].iov_base = pdev;
5140 iov[1].iov_len = sizeof(*pdev);
5141 if (S_ISCHR(mode)) {
5142 memcpy(pdev->type, "IntxCHR", 8);
5143 pdev->major = cpu_to_le64(MAJOR(dev));
5144 pdev->minor = cpu_to_le64(MINOR(dev));
5145 } else if (S_ISBLK(mode)) {
5146 memcpy(pdev->type, "IntxBLK", 8);
5147 pdev->major = cpu_to_le64(MAJOR(dev));
5148 pdev->minor = cpu_to_le64(MINOR(dev));
5149 } else if (S_ISFIFO(mode)) {
5150 memcpy(pdev->type, "LnxFIFO", 8);
5153 rc = server->ops->sync_write(xid, &fid, &io_parms,
5154 &bytes_written, iov, 1);
5155 server->ops->close(xid, tcon, &fid);
5157 /* FIXME: add code here to set EAs */
5158 cifs_free_open_info(&buf);
5162 static int smb2_make_node(unsigned int xid, struct inode *inode,
5163 struct dentry *dentry, struct cifs_tcon *tcon,
5164 const char *full_path, umode_t mode, dev_t dev)
5166 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
5169 * Check if mounted with mount parm 'sfu' mount parm.
5170 * SFU emulation should work with all servers, but only
5171 * supports block and char device (no socket & fifo),
5172 * and was used by default in earlier versions of Windows
5174 if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL))
5177 * TODO: Add ability to create instead via reparse point. Windows (e.g.
5178 * their current NFS server) uses this approach to expose special files
5179 * over SMB2/SMB3 and Samba will do this with SMB3.1.1 POSIX Extensions
5181 return cifs_sfu_make_node(xid, inode, dentry, tcon,
5182 full_path, mode, dev);
5185 #ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY
5186 struct smb_version_operations smb20_operations = {
5187 .compare_fids = smb2_compare_fids,
5188 .setup_request = smb2_setup_request,
5189 .setup_async_request = smb2_setup_async_request,
5190 .check_receive = smb2_check_receive,
5191 .add_credits = smb2_add_credits,
5192 .set_credits = smb2_set_credits,
5193 .get_credits_field = smb2_get_credits_field,
5194 .get_credits = smb2_get_credits,
5195 .wait_mtu_credits = cifs_wait_mtu_credits,
5196 .get_next_mid = smb2_get_next_mid,
5197 .revert_current_mid = smb2_revert_current_mid,
5198 .read_data_offset = smb2_read_data_offset,
5199 .read_data_length = smb2_read_data_length,
5200 .map_error = map_smb2_to_linux_error,
5201 .find_mid = smb2_find_mid,
5202 .check_message = smb2_check_message,
5203 .dump_detail = smb2_dump_detail,
5204 .clear_stats = smb2_clear_stats,
5205 .print_stats = smb2_print_stats,
5206 .is_oplock_break = smb2_is_valid_oplock_break,
5207 .handle_cancelled_mid = smb2_handle_cancelled_mid,
5208 .downgrade_oplock = smb2_downgrade_oplock,
5209 .need_neg = smb2_need_neg,
5210 .negotiate = smb2_negotiate,
5211 .negotiate_wsize = smb2_negotiate_wsize,
5212 .negotiate_rsize = smb2_negotiate_rsize,
5213 .sess_setup = SMB2_sess_setup,
5214 .logoff = SMB2_logoff,
5215 .tree_connect = SMB2_tcon,
5216 .tree_disconnect = SMB2_tdis,
5217 .qfs_tcon = smb2_qfs_tcon,
5218 .is_path_accessible = smb2_is_path_accessible,
5219 .can_echo = smb2_can_echo,
5221 .query_path_info = smb2_query_path_info,
5222 .query_reparse_point = smb2_query_reparse_point,
5223 .get_srv_inum = smb2_get_srv_inum,
5224 .query_file_info = smb2_query_file_info,
5225 .set_path_size = smb2_set_path_size,
5226 .set_file_size = smb2_set_file_size,
5227 .set_file_info = smb2_set_file_info,
5228 .set_compression = smb2_set_compression,
5229 .mkdir = smb2_mkdir,
5230 .mkdir_setinfo = smb2_mkdir_setinfo,
5231 .rmdir = smb2_rmdir,
5232 .unlink = smb2_unlink,
5233 .rename = smb2_rename_path,
5234 .create_hardlink = smb2_create_hardlink,
5235 .parse_reparse_point = smb2_parse_reparse_point,
5236 .query_mf_symlink = smb3_query_mf_symlink,
5237 .create_mf_symlink = smb3_create_mf_symlink,
5238 .open = smb2_open_file,
5239 .set_fid = smb2_set_fid,
5240 .close = smb2_close_file,
5241 .flush = smb2_flush_file,
5242 .async_readv = smb2_async_readv,
5243 .async_writev = smb2_async_writev,
5244 .sync_read = smb2_sync_read,
5245 .sync_write = smb2_sync_write,
5246 .query_dir_first = smb2_query_dir_first,
5247 .query_dir_next = smb2_query_dir_next,
5248 .close_dir = smb2_close_dir,
5249 .calc_smb_size = smb2_calc_size,
5250 .is_status_pending = smb2_is_status_pending,
5251 .is_session_expired = smb2_is_session_expired,
5252 .oplock_response = smb2_oplock_response,
5253 .queryfs = smb2_queryfs,
5254 .mand_lock = smb2_mand_lock,
5255 .mand_unlock_range = smb2_unlock_range,
5256 .push_mand_locks = smb2_push_mandatory_locks,
5257 .get_lease_key = smb2_get_lease_key,
5258 .set_lease_key = smb2_set_lease_key,
5259 .new_lease_key = smb2_new_lease_key,
5260 .calc_signature = smb2_calc_signature,
5261 .is_read_op = smb2_is_read_op,
5262 .set_oplock_level = smb2_set_oplock_level,
5263 .create_lease_buf = smb2_create_lease_buf,
5264 .parse_lease_buf = smb2_parse_lease_buf,
5265 .copychunk_range = smb2_copychunk_range,
5266 .wp_retry_size = smb2_wp_retry_size,
5267 .dir_needs_close = smb2_dir_needs_close,
5268 .get_dfs_refer = smb2_get_dfs_refer,
5269 .select_sectype = smb2_select_sectype,
5270 #ifdef CONFIG_CIFS_XATTR
5271 .query_all_EAs = smb2_query_eas,
5272 .set_EA = smb2_set_ea,
5273 #endif /* CIFS_XATTR */
5274 .get_acl = get_smb2_acl,
5275 .get_acl_by_fid = get_smb2_acl_by_fid,
5276 .set_acl = set_smb2_acl,
5277 .next_header = smb2_next_header,
5278 .ioctl_query_info = smb2_ioctl_query_info,
5279 .make_node = smb2_make_node,
5280 .fiemap = smb3_fiemap,
5281 .llseek = smb3_llseek,
5282 .is_status_io_timeout = smb2_is_status_io_timeout,
5283 .is_network_name_deleted = smb2_is_network_name_deleted,
5285 #endif /* CIFS_ALLOW_INSECURE_LEGACY */
5287 struct smb_version_operations smb21_operations = {
5288 .compare_fids = smb2_compare_fids,
5289 .setup_request = smb2_setup_request,
5290 .setup_async_request = smb2_setup_async_request,
5291 .check_receive = smb2_check_receive,
5292 .add_credits = smb2_add_credits,
5293 .set_credits = smb2_set_credits,
5294 .get_credits_field = smb2_get_credits_field,
5295 .get_credits = smb2_get_credits,
5296 .wait_mtu_credits = smb2_wait_mtu_credits,
5297 .adjust_credits = smb2_adjust_credits,
5298 .get_next_mid = smb2_get_next_mid,
5299 .revert_current_mid = smb2_revert_current_mid,
5300 .read_data_offset = smb2_read_data_offset,
5301 .read_data_length = smb2_read_data_length,
5302 .map_error = map_smb2_to_linux_error,
5303 .find_mid = smb2_find_mid,
5304 .check_message = smb2_check_message,
5305 .dump_detail = smb2_dump_detail,
5306 .clear_stats = smb2_clear_stats,
5307 .print_stats = smb2_print_stats,
5308 .is_oplock_break = smb2_is_valid_oplock_break,
5309 .handle_cancelled_mid = smb2_handle_cancelled_mid,
5310 .downgrade_oplock = smb2_downgrade_oplock,
5311 .need_neg = smb2_need_neg,
5312 .negotiate = smb2_negotiate,
5313 .negotiate_wsize = smb2_negotiate_wsize,
5314 .negotiate_rsize = smb2_negotiate_rsize,
5315 .sess_setup = SMB2_sess_setup,
5316 .logoff = SMB2_logoff,
5317 .tree_connect = SMB2_tcon,
5318 .tree_disconnect = SMB2_tdis,
5319 .qfs_tcon = smb2_qfs_tcon,
5320 .is_path_accessible = smb2_is_path_accessible,
5321 .can_echo = smb2_can_echo,
5323 .query_path_info = smb2_query_path_info,
5324 .query_reparse_point = smb2_query_reparse_point,
5325 .get_srv_inum = smb2_get_srv_inum,
5326 .query_file_info = smb2_query_file_info,
5327 .set_path_size = smb2_set_path_size,
5328 .set_file_size = smb2_set_file_size,
5329 .set_file_info = smb2_set_file_info,
5330 .set_compression = smb2_set_compression,
5331 .mkdir = smb2_mkdir,
5332 .mkdir_setinfo = smb2_mkdir_setinfo,
5333 .rmdir = smb2_rmdir,
5334 .unlink = smb2_unlink,
5335 .rename = smb2_rename_path,
5336 .create_hardlink = smb2_create_hardlink,
5337 .parse_reparse_point = smb2_parse_reparse_point,
5338 .query_mf_symlink = smb3_query_mf_symlink,
5339 .create_mf_symlink = smb3_create_mf_symlink,
5340 .open = smb2_open_file,
5341 .set_fid = smb2_set_fid,
5342 .close = smb2_close_file,
5343 .flush = smb2_flush_file,
5344 .async_readv = smb2_async_readv,
5345 .async_writev = smb2_async_writev,
5346 .sync_read = smb2_sync_read,
5347 .sync_write = smb2_sync_write,
5348 .query_dir_first = smb2_query_dir_first,
5349 .query_dir_next = smb2_query_dir_next,
5350 .close_dir = smb2_close_dir,
5351 .calc_smb_size = smb2_calc_size,
5352 .is_status_pending = smb2_is_status_pending,
5353 .is_session_expired = smb2_is_session_expired,
5354 .oplock_response = smb2_oplock_response,
5355 .queryfs = smb2_queryfs,
5356 .mand_lock = smb2_mand_lock,
5357 .mand_unlock_range = smb2_unlock_range,
5358 .push_mand_locks = smb2_push_mandatory_locks,
5359 .get_lease_key = smb2_get_lease_key,
5360 .set_lease_key = smb2_set_lease_key,
5361 .new_lease_key = smb2_new_lease_key,
5362 .calc_signature = smb2_calc_signature,
5363 .is_read_op = smb21_is_read_op,
5364 .set_oplock_level = smb21_set_oplock_level,
5365 .create_lease_buf = smb2_create_lease_buf,
5366 .parse_lease_buf = smb2_parse_lease_buf,
5367 .copychunk_range = smb2_copychunk_range,
5368 .wp_retry_size = smb2_wp_retry_size,
5369 .dir_needs_close = smb2_dir_needs_close,
5370 .enum_snapshots = smb3_enum_snapshots,
5371 .notify = smb3_notify,
5372 .get_dfs_refer = smb2_get_dfs_refer,
5373 .select_sectype = smb2_select_sectype,
5374 #ifdef CONFIG_CIFS_XATTR
5375 .query_all_EAs = smb2_query_eas,
5376 .set_EA = smb2_set_ea,
5377 #endif /* CIFS_XATTR */
5378 .get_acl = get_smb2_acl,
5379 .get_acl_by_fid = get_smb2_acl_by_fid,
5380 .set_acl = set_smb2_acl,
5381 .next_header = smb2_next_header,
5382 .ioctl_query_info = smb2_ioctl_query_info,
5383 .make_node = smb2_make_node,
5384 .fiemap = smb3_fiemap,
5385 .llseek = smb3_llseek,
5386 .is_status_io_timeout = smb2_is_status_io_timeout,
5387 .is_network_name_deleted = smb2_is_network_name_deleted,
5390 struct smb_version_operations smb30_operations = {
5391 .compare_fids = smb2_compare_fids,
5392 .setup_request = smb2_setup_request,
5393 .setup_async_request = smb2_setup_async_request,
5394 .check_receive = smb2_check_receive,
5395 .add_credits = smb2_add_credits,
5396 .set_credits = smb2_set_credits,
5397 .get_credits_field = smb2_get_credits_field,
5398 .get_credits = smb2_get_credits,
5399 .wait_mtu_credits = smb2_wait_mtu_credits,
5400 .adjust_credits = smb2_adjust_credits,
5401 .get_next_mid = smb2_get_next_mid,
5402 .revert_current_mid = smb2_revert_current_mid,
5403 .read_data_offset = smb2_read_data_offset,
5404 .read_data_length = smb2_read_data_length,
5405 .map_error = map_smb2_to_linux_error,
5406 .find_mid = smb2_find_mid,
5407 .check_message = smb2_check_message,
5408 .dump_detail = smb2_dump_detail,
5409 .clear_stats = smb2_clear_stats,
5410 .print_stats = smb2_print_stats,
5411 .dump_share_caps = smb2_dump_share_caps,
5412 .is_oplock_break = smb2_is_valid_oplock_break,
5413 .handle_cancelled_mid = smb2_handle_cancelled_mid,
5414 .downgrade_oplock = smb3_downgrade_oplock,
5415 .need_neg = smb2_need_neg,
5416 .negotiate = smb2_negotiate,
5417 .negotiate_wsize = smb3_negotiate_wsize,
5418 .negotiate_rsize = smb3_negotiate_rsize,
5419 .sess_setup = SMB2_sess_setup,
5420 .logoff = SMB2_logoff,
5421 .tree_connect = SMB2_tcon,
5422 .tree_disconnect = SMB2_tdis,
5423 .qfs_tcon = smb3_qfs_tcon,
5424 .is_path_accessible = smb2_is_path_accessible,
5425 .can_echo = smb2_can_echo,
5427 .query_path_info = smb2_query_path_info,
5428 /* WSL tags introduced long after smb2.1, enable for SMB3, 3.11 only */
5429 .query_reparse_point = smb2_query_reparse_point,
5430 .get_srv_inum = smb2_get_srv_inum,
5431 .query_file_info = smb2_query_file_info,
5432 .set_path_size = smb2_set_path_size,
5433 .set_file_size = smb2_set_file_size,
5434 .set_file_info = smb2_set_file_info,
5435 .set_compression = smb2_set_compression,
5436 .mkdir = smb2_mkdir,
5437 .mkdir_setinfo = smb2_mkdir_setinfo,
5438 .rmdir = smb2_rmdir,
5439 .unlink = smb2_unlink,
5440 .rename = smb2_rename_path,
5441 .create_hardlink = smb2_create_hardlink,
5442 .parse_reparse_point = smb2_parse_reparse_point,
5443 .query_mf_symlink = smb3_query_mf_symlink,
5444 .create_mf_symlink = smb3_create_mf_symlink,
5445 .open = smb2_open_file,
5446 .set_fid = smb2_set_fid,
5447 .close = smb2_close_file,
5448 .close_getattr = smb2_close_getattr,
5449 .flush = smb2_flush_file,
5450 .async_readv = smb2_async_readv,
5451 .async_writev = smb2_async_writev,
5452 .sync_read = smb2_sync_read,
5453 .sync_write = smb2_sync_write,
5454 .query_dir_first = smb2_query_dir_first,
5455 .query_dir_next = smb2_query_dir_next,
5456 .close_dir = smb2_close_dir,
5457 .calc_smb_size = smb2_calc_size,
5458 .is_status_pending = smb2_is_status_pending,
5459 .is_session_expired = smb2_is_session_expired,
5460 .oplock_response = smb2_oplock_response,
5461 .queryfs = smb2_queryfs,
5462 .mand_lock = smb2_mand_lock,
5463 .mand_unlock_range = smb2_unlock_range,
5464 .push_mand_locks = smb2_push_mandatory_locks,
5465 .get_lease_key = smb2_get_lease_key,
5466 .set_lease_key = smb2_set_lease_key,
5467 .new_lease_key = smb2_new_lease_key,
5468 .generate_signingkey = generate_smb30signingkey,
5469 .calc_signature = smb3_calc_signature,
5470 .set_integrity = smb3_set_integrity,
5471 .is_read_op = smb21_is_read_op,
5472 .set_oplock_level = smb3_set_oplock_level,
5473 .create_lease_buf = smb3_create_lease_buf,
5474 .parse_lease_buf = smb3_parse_lease_buf,
5475 .copychunk_range = smb2_copychunk_range,
5476 .duplicate_extents = smb2_duplicate_extents,
5477 .validate_negotiate = smb3_validate_negotiate,
5478 .wp_retry_size = smb2_wp_retry_size,
5479 .dir_needs_close = smb2_dir_needs_close,
5480 .fallocate = smb3_fallocate,
5481 .enum_snapshots = smb3_enum_snapshots,
5482 .notify = smb3_notify,
5483 .init_transform_rq = smb3_init_transform_rq,
5484 .is_transform_hdr = smb3_is_transform_hdr,
5485 .receive_transform = smb3_receive_transform,
5486 .get_dfs_refer = smb2_get_dfs_refer,
5487 .select_sectype = smb2_select_sectype,
5488 #ifdef CONFIG_CIFS_XATTR
5489 .query_all_EAs = smb2_query_eas,
5490 .set_EA = smb2_set_ea,
5491 #endif /* CIFS_XATTR */
5492 .get_acl = get_smb2_acl,
5493 .get_acl_by_fid = get_smb2_acl_by_fid,
5494 .set_acl = set_smb2_acl,
5495 .next_header = smb2_next_header,
5496 .ioctl_query_info = smb2_ioctl_query_info,
5497 .make_node = smb2_make_node,
5498 .fiemap = smb3_fiemap,
5499 .llseek = smb3_llseek,
5500 .is_status_io_timeout = smb2_is_status_io_timeout,
5501 .is_network_name_deleted = smb2_is_network_name_deleted,
5504 struct smb_version_operations smb311_operations = {
5505 .compare_fids = smb2_compare_fids,
5506 .setup_request = smb2_setup_request,
5507 .setup_async_request = smb2_setup_async_request,
5508 .check_receive = smb2_check_receive,
5509 .add_credits = smb2_add_credits,
5510 .set_credits = smb2_set_credits,
5511 .get_credits_field = smb2_get_credits_field,
5512 .get_credits = smb2_get_credits,
5513 .wait_mtu_credits = smb2_wait_mtu_credits,
5514 .adjust_credits = smb2_adjust_credits,
5515 .get_next_mid = smb2_get_next_mid,
5516 .revert_current_mid = smb2_revert_current_mid,
5517 .read_data_offset = smb2_read_data_offset,
5518 .read_data_length = smb2_read_data_length,
5519 .map_error = map_smb2_to_linux_error,
5520 .find_mid = smb2_find_mid,
5521 .check_message = smb2_check_message,
5522 .dump_detail = smb2_dump_detail,
5523 .clear_stats = smb2_clear_stats,
5524 .print_stats = smb2_print_stats,
5525 .dump_share_caps = smb2_dump_share_caps,
5526 .is_oplock_break = smb2_is_valid_oplock_break,
5527 .handle_cancelled_mid = smb2_handle_cancelled_mid,
5528 .downgrade_oplock = smb3_downgrade_oplock,
5529 .need_neg = smb2_need_neg,
5530 .negotiate = smb2_negotiate,
5531 .negotiate_wsize = smb3_negotiate_wsize,
5532 .negotiate_rsize = smb3_negotiate_rsize,
5533 .sess_setup = SMB2_sess_setup,
5534 .logoff = SMB2_logoff,
5535 .tree_connect = SMB2_tcon,
5536 .tree_disconnect = SMB2_tdis,
5537 .qfs_tcon = smb3_qfs_tcon,
5538 .is_path_accessible = smb2_is_path_accessible,
5539 .can_echo = smb2_can_echo,
5541 .query_path_info = smb2_query_path_info,
5542 .query_reparse_point = smb2_query_reparse_point,
5543 .get_srv_inum = smb2_get_srv_inum,
5544 .query_file_info = smb2_query_file_info,
5545 .set_path_size = smb2_set_path_size,
5546 .set_file_size = smb2_set_file_size,
5547 .set_file_info = smb2_set_file_info,
5548 .set_compression = smb2_set_compression,
5549 .mkdir = smb2_mkdir,
5550 .mkdir_setinfo = smb2_mkdir_setinfo,
5551 .posix_mkdir = smb311_posix_mkdir,
5552 .rmdir = smb2_rmdir,
5553 .unlink = smb2_unlink,
5554 .rename = smb2_rename_path,
5555 .create_hardlink = smb2_create_hardlink,
5556 .parse_reparse_point = smb2_parse_reparse_point,
5557 .query_mf_symlink = smb3_query_mf_symlink,
5558 .create_mf_symlink = smb3_create_mf_symlink,
5559 .open = smb2_open_file,
5560 .set_fid = smb2_set_fid,
5561 .close = smb2_close_file,
5562 .close_getattr = smb2_close_getattr,
5563 .flush = smb2_flush_file,
5564 .async_readv = smb2_async_readv,
5565 .async_writev = smb2_async_writev,
5566 .sync_read = smb2_sync_read,
5567 .sync_write = smb2_sync_write,
5568 .query_dir_first = smb2_query_dir_first,
5569 .query_dir_next = smb2_query_dir_next,
5570 .close_dir = smb2_close_dir,
5571 .calc_smb_size = smb2_calc_size,
5572 .is_status_pending = smb2_is_status_pending,
5573 .is_session_expired = smb2_is_session_expired,
5574 .oplock_response = smb2_oplock_response,
5575 .queryfs = smb311_queryfs,
5576 .mand_lock = smb2_mand_lock,
5577 .mand_unlock_range = smb2_unlock_range,
5578 .push_mand_locks = smb2_push_mandatory_locks,
5579 .get_lease_key = smb2_get_lease_key,
5580 .set_lease_key = smb2_set_lease_key,
5581 .new_lease_key = smb2_new_lease_key,
5582 .generate_signingkey = generate_smb311signingkey,
5583 .calc_signature = smb3_calc_signature,
5584 .set_integrity = smb3_set_integrity,
5585 .is_read_op = smb21_is_read_op,
5586 .set_oplock_level = smb3_set_oplock_level,
5587 .create_lease_buf = smb3_create_lease_buf,
5588 .parse_lease_buf = smb3_parse_lease_buf,
5589 .copychunk_range = smb2_copychunk_range,
5590 .duplicate_extents = smb2_duplicate_extents,
5591 /* .validate_negotiate = smb3_validate_negotiate, */ /* not used in 3.11 */
5592 .wp_retry_size = smb2_wp_retry_size,
5593 .dir_needs_close = smb2_dir_needs_close,
5594 .fallocate = smb3_fallocate,
5595 .enum_snapshots = smb3_enum_snapshots,
5596 .notify = smb3_notify,
5597 .init_transform_rq = smb3_init_transform_rq,
5598 .is_transform_hdr = smb3_is_transform_hdr,
5599 .receive_transform = smb3_receive_transform,
5600 .get_dfs_refer = smb2_get_dfs_refer,
5601 .select_sectype = smb2_select_sectype,
5602 #ifdef CONFIG_CIFS_XATTR
5603 .query_all_EAs = smb2_query_eas,
5604 .set_EA = smb2_set_ea,
5605 #endif /* CIFS_XATTR */
5606 .get_acl = get_smb2_acl,
5607 .get_acl_by_fid = get_smb2_acl_by_fid,
5608 .set_acl = set_smb2_acl,
5609 .next_header = smb2_next_header,
5610 .ioctl_query_info = smb2_ioctl_query_info,
5611 .make_node = smb2_make_node,
5612 .fiemap = smb3_fiemap,
5613 .llseek = smb3_llseek,
5614 .is_status_io_timeout = smb2_is_status_io_timeout,
5615 .is_network_name_deleted = smb2_is_network_name_deleted,
5618 #ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY
5619 struct smb_version_values smb20_values = {
5620 .version_string = SMB20_VERSION_STRING,
5621 .protocol_id = SMB20_PROT_ID,
5622 .req_capabilities = 0, /* MBZ */
5623 .large_lock_type = 0,
5624 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE,
5625 .shared_lock_type = SMB2_LOCKFLAG_SHARED,
5626 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
5627 .header_size = sizeof(struct smb2_hdr),
5628 .header_preamble_size = 0,
5629 .max_header_size = MAX_SMB2_HDR_SIZE,
5630 .read_rsp_size = sizeof(struct smb2_read_rsp),
5631 .lock_cmd = SMB2_LOCK,
5633 .cap_nt_find = SMB2_NT_FIND,
5634 .cap_large_files = SMB2_LARGE_FILES,
5635 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
5636 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
5637 .create_lease_size = sizeof(struct create_lease),
5639 #endif /* ALLOW_INSECURE_LEGACY */
5641 struct smb_version_values smb21_values = {
5642 .version_string = SMB21_VERSION_STRING,
5643 .protocol_id = SMB21_PROT_ID,
5644 .req_capabilities = 0, /* MBZ on negotiate req until SMB3 dialect */
5645 .large_lock_type = 0,
5646 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE,
5647 .shared_lock_type = SMB2_LOCKFLAG_SHARED,
5648 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
5649 .header_size = sizeof(struct smb2_hdr),
5650 .header_preamble_size = 0,
5651 .max_header_size = MAX_SMB2_HDR_SIZE,
5652 .read_rsp_size = sizeof(struct smb2_read_rsp),
5653 .lock_cmd = SMB2_LOCK,
5655 .cap_nt_find = SMB2_NT_FIND,
5656 .cap_large_files = SMB2_LARGE_FILES,
5657 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
5658 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
5659 .create_lease_size = sizeof(struct create_lease),
5662 struct smb_version_values smb3any_values = {
5663 .version_string = SMB3ANY_VERSION_STRING,
5664 .protocol_id = SMB302_PROT_ID, /* doesn't matter, send protocol array */
5665 .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,
5666 .large_lock_type = 0,
5667 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE,
5668 .shared_lock_type = SMB2_LOCKFLAG_SHARED,
5669 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
5670 .header_size = sizeof(struct smb2_hdr),
5671 .header_preamble_size = 0,
5672 .max_header_size = MAX_SMB2_HDR_SIZE,
5673 .read_rsp_size = sizeof(struct smb2_read_rsp),
5674 .lock_cmd = SMB2_LOCK,
5676 .cap_nt_find = SMB2_NT_FIND,
5677 .cap_large_files = SMB2_LARGE_FILES,
5678 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
5679 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
5680 .create_lease_size = sizeof(struct create_lease_v2),
5683 struct smb_version_values smbdefault_values = {
5684 .version_string = SMBDEFAULT_VERSION_STRING,
5685 .protocol_id = SMB302_PROT_ID, /* doesn't matter, send protocol array */
5686 .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,
5687 .large_lock_type = 0,
5688 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE,
5689 .shared_lock_type = SMB2_LOCKFLAG_SHARED,
5690 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
5691 .header_size = sizeof(struct smb2_hdr),
5692 .header_preamble_size = 0,
5693 .max_header_size = MAX_SMB2_HDR_SIZE,
5694 .read_rsp_size = sizeof(struct smb2_read_rsp),
5695 .lock_cmd = SMB2_LOCK,
5697 .cap_nt_find = SMB2_NT_FIND,
5698 .cap_large_files = SMB2_LARGE_FILES,
5699 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
5700 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
5701 .create_lease_size = sizeof(struct create_lease_v2),
5704 struct smb_version_values smb30_values = {
5705 .version_string = SMB30_VERSION_STRING,
5706 .protocol_id = SMB30_PROT_ID,
5707 .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,
5708 .large_lock_type = 0,
5709 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE,
5710 .shared_lock_type = SMB2_LOCKFLAG_SHARED,
5711 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
5712 .header_size = sizeof(struct smb2_hdr),
5713 .header_preamble_size = 0,
5714 .max_header_size = MAX_SMB2_HDR_SIZE,
5715 .read_rsp_size = sizeof(struct smb2_read_rsp),
5716 .lock_cmd = SMB2_LOCK,
5718 .cap_nt_find = SMB2_NT_FIND,
5719 .cap_large_files = SMB2_LARGE_FILES,
5720 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
5721 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
5722 .create_lease_size = sizeof(struct create_lease_v2),
5725 struct smb_version_values smb302_values = {
5726 .version_string = SMB302_VERSION_STRING,
5727 .protocol_id = SMB302_PROT_ID,
5728 .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,
5729 .large_lock_type = 0,
5730 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE,
5731 .shared_lock_type = SMB2_LOCKFLAG_SHARED,
5732 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
5733 .header_size = sizeof(struct smb2_hdr),
5734 .header_preamble_size = 0,
5735 .max_header_size = MAX_SMB2_HDR_SIZE,
5736 .read_rsp_size = sizeof(struct smb2_read_rsp),
5737 .lock_cmd = SMB2_LOCK,
5739 .cap_nt_find = SMB2_NT_FIND,
5740 .cap_large_files = SMB2_LARGE_FILES,
5741 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
5742 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
5743 .create_lease_size = sizeof(struct create_lease_v2),
5746 struct smb_version_values smb311_values = {
5747 .version_string = SMB311_VERSION_STRING,
5748 .protocol_id = SMB311_PROT_ID,
5749 .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,
5750 .large_lock_type = 0,
5751 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE,
5752 .shared_lock_type = SMB2_LOCKFLAG_SHARED,
5753 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
5754 .header_size = sizeof(struct smb2_hdr),
5755 .header_preamble_size = 0,
5756 .max_header_size = MAX_SMB2_HDR_SIZE,
5757 .read_rsp_size = sizeof(struct smb2_read_rsp),
5758 .lock_cmd = SMB2_LOCK,
5760 .cap_nt_find = SMB2_NT_FIND,
5761 .cap_large_files = SMB2_LARGE_FILES,
5762 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
5763 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
5764 .create_lease_size = sizeof(struct create_lease_v2),