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 <crypto/aead.h>
16 #include "smb2proto.h"
17 #include "cifsproto.h"
18 #include "cifs_debug.h"
19 #include "cifs_unicode.h"
20 #include "smb2status.h"
22 #include "cifs_ioctl.h"
23 #include "smbdirect.h"
25 /* Change credits for different ops and return the total number of credits */
27 change_conf(struct TCP_Server_Info *server)
29 server->credits += server->echo_credits + server->oplock_credits;
30 server->oplock_credits = server->echo_credits = 0;
31 switch (server->credits) {
35 server->echoes = false;
36 server->oplocks = false;
39 server->echoes = true;
40 server->oplocks = false;
41 server->echo_credits = 1;
44 server->echoes = true;
46 server->oplocks = true;
47 server->oplock_credits = 1;
49 server->oplocks = false;
51 server->echo_credits = 1;
53 server->credits -= server->echo_credits + server->oplock_credits;
54 return server->credits + server->echo_credits + server->oplock_credits;
58 smb2_add_credits(struct TCP_Server_Info *server,
59 const struct cifs_credits *credits, const int optype)
62 unsigned int add = credits->value;
63 unsigned int instance = credits->instance;
64 bool reconnect_detected = false;
66 spin_lock(&server->req_lock);
67 val = server->ops->get_credits_field(server, optype);
69 /* eg found case where write overlapping reconnect messed up credits */
70 if (((optype & CIFS_OP_MASK) == CIFS_NEG_OP) && (*val != 0))
71 trace_smb3_reconnect_with_invalid_credits(server->CurrentMid,
72 server->hostname, *val);
73 if ((instance == 0) || (instance == server->reconnect_instance))
76 reconnect_detected = true;
79 *val = 65000; /* Don't get near 64K credits, avoid srv bugs */
80 printk_once(KERN_WARNING "server overflowed SMB3 credits\n");
83 if (server->in_flight == 0 && (optype & CIFS_OP_MASK) != CIFS_NEG_OP)
84 rc = change_conf(server);
86 * Sometimes server returns 0 credits on oplock break ack - we need to
87 * rebalance credits in this case.
89 else if (server->in_flight > 0 && server->oplock_credits == 0 &&
91 if (server->credits > 1) {
93 server->oplock_credits++;
96 spin_unlock(&server->req_lock);
97 wake_up(&server->request_q);
99 if (reconnect_detected)
100 cifs_dbg(FYI, "trying to put %d credits from the old server instance %d\n",
103 if (server->tcpStatus == CifsNeedReconnect
104 || server->tcpStatus == CifsExiting)
109 /* change_conf hasn't been executed */
112 cifs_server_dbg(VFS, "Possible client or server bug - zero credits\n");
115 cifs_server_dbg(VFS, "disabling echoes and oplocks\n");
118 cifs_dbg(FYI, "disabling oplocks\n");
121 cifs_dbg(FYI, "add %u credits total=%d\n", add, rc);
126 smb2_set_credits(struct TCP_Server_Info *server, const int val)
128 spin_lock(&server->req_lock);
129 server->credits = val;
131 server->reconnect_instance++;
132 spin_unlock(&server->req_lock);
133 /* don't log while holding the lock */
135 cifs_dbg(FYI, "set credits to 1 due to smb2 reconnect\n");
139 smb2_get_credits_field(struct TCP_Server_Info *server, const int optype)
143 return &server->echo_credits;
145 return &server->oplock_credits;
147 return &server->credits;
152 smb2_get_credits(struct mid_q_entry *mid)
154 struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)mid->resp_buf;
156 if (mid->mid_state == MID_RESPONSE_RECEIVED
157 || mid->mid_state == MID_RESPONSE_MALFORMED)
158 return le16_to_cpu(shdr->CreditRequest);
164 smb2_wait_mtu_credits(struct TCP_Server_Info *server, unsigned int size,
165 unsigned int *num, struct cifs_credits *credits)
168 unsigned int scredits;
170 spin_lock(&server->req_lock);
172 if (server->credits <= 0) {
173 spin_unlock(&server->req_lock);
174 cifs_num_waiters_inc(server);
175 rc = wait_event_killable(server->request_q,
176 has_credits(server, &server->credits, 1));
177 cifs_num_waiters_dec(server);
180 spin_lock(&server->req_lock);
182 if (server->tcpStatus == CifsExiting) {
183 spin_unlock(&server->req_lock);
187 scredits = server->credits;
188 /* can deadlock with reopen */
190 *num = SMB2_MAX_BUFFER_SIZE;
192 credits->instance = 0;
196 /* leave some credits for reopen and other ops */
198 *num = min_t(unsigned int, size,
199 scredits * SMB2_MAX_BUFFER_SIZE);
202 DIV_ROUND_UP(*num, SMB2_MAX_BUFFER_SIZE);
203 credits->instance = server->reconnect_instance;
204 server->credits -= credits->value;
206 if (server->in_flight > server->max_in_flight)
207 server->max_in_flight = server->in_flight;
211 spin_unlock(&server->req_lock);
216 smb2_adjust_credits(struct TCP_Server_Info *server,
217 struct cifs_credits *credits,
218 const unsigned int payload_size)
220 int new_val = DIV_ROUND_UP(payload_size, SMB2_MAX_BUFFER_SIZE);
222 if (!credits->value || credits->value == new_val)
225 if (credits->value < new_val) {
226 WARN_ONCE(1, "request has less credits (%d) than required (%d)",
227 credits->value, new_val);
231 spin_lock(&server->req_lock);
233 if (server->reconnect_instance != credits->instance) {
234 spin_unlock(&server->req_lock);
235 cifs_server_dbg(VFS, "trying to return %d credits to old session\n",
236 credits->value - new_val);
240 server->credits += credits->value - new_val;
241 spin_unlock(&server->req_lock);
242 wake_up(&server->request_q);
243 credits->value = new_val;
248 smb2_get_next_mid(struct TCP_Server_Info *server)
251 /* for SMB2 we need the current value */
252 spin_lock(&GlobalMid_Lock);
253 mid = server->CurrentMid++;
254 spin_unlock(&GlobalMid_Lock);
259 smb2_revert_current_mid(struct TCP_Server_Info *server, const unsigned int val)
261 spin_lock(&GlobalMid_Lock);
262 if (server->CurrentMid >= val)
263 server->CurrentMid -= val;
264 spin_unlock(&GlobalMid_Lock);
267 static struct mid_q_entry *
268 smb2_find_mid(struct TCP_Server_Info *server, char *buf)
270 struct mid_q_entry *mid;
271 struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)buf;
272 __u64 wire_mid = le64_to_cpu(shdr->MessageId);
274 if (shdr->ProtocolId == SMB2_TRANSFORM_PROTO_NUM) {
275 cifs_server_dbg(VFS, "Encrypted frame parsing not supported yet\n");
279 spin_lock(&GlobalMid_Lock);
280 list_for_each_entry(mid, &server->pending_mid_q, qhead) {
281 if ((mid->mid == wire_mid) &&
282 (mid->mid_state == MID_REQUEST_SUBMITTED) &&
283 (mid->command == shdr->Command)) {
284 kref_get(&mid->refcount);
285 spin_unlock(&GlobalMid_Lock);
289 spin_unlock(&GlobalMid_Lock);
294 smb2_dump_detail(void *buf, struct TCP_Server_Info *server)
296 #ifdef CONFIG_CIFS_DEBUG2
297 struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)buf;
299 cifs_server_dbg(VFS, "Cmd: %d Err: 0x%x Flags: 0x%x Mid: %llu Pid: %d\n",
300 shdr->Command, shdr->Status, shdr->Flags, shdr->MessageId,
302 cifs_server_dbg(VFS, "smb buf %p len %u\n", buf,
303 server->ops->calc_smb_size(buf, server));
308 smb2_need_neg(struct TCP_Server_Info *server)
310 return server->max_read == 0;
314 smb2_negotiate(const unsigned int xid, struct cifs_ses *ses)
318 ses->server->CurrentMid = 0;
319 rc = SMB2_negotiate(xid, ses);
320 /* BB we probably don't need to retry with modern servers */
327 smb2_negotiate_wsize(struct cifs_tcon *tcon, struct smb_vol *volume_info)
329 struct TCP_Server_Info *server = tcon->ses->server;
332 /* start with specified wsize, or default */
333 wsize = volume_info->wsize ? volume_info->wsize : CIFS_DEFAULT_IOSIZE;
334 wsize = min_t(unsigned int, wsize, server->max_write);
335 #ifdef CONFIG_CIFS_SMB_DIRECT
338 wsize = min_t(unsigned int,
339 wsize, server->smbd_conn->max_fragmented_send_size);
341 wsize = min_t(unsigned int,
342 wsize, server->smbd_conn->max_readwrite_size);
345 if (!(server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU))
346 wsize = min_t(unsigned int, wsize, SMB2_MAX_BUFFER_SIZE);
352 smb3_negotiate_wsize(struct cifs_tcon *tcon, struct smb_vol *volume_info)
354 struct TCP_Server_Info *server = tcon->ses->server;
357 /* start with specified wsize, or default */
358 wsize = volume_info->wsize ? volume_info->wsize : SMB3_DEFAULT_IOSIZE;
359 wsize = min_t(unsigned int, wsize, server->max_write);
360 #ifdef CONFIG_CIFS_SMB_DIRECT
363 wsize = min_t(unsigned int,
364 wsize, server->smbd_conn->max_fragmented_send_size);
366 wsize = min_t(unsigned int,
367 wsize, server->smbd_conn->max_readwrite_size);
370 if (!(server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU))
371 wsize = min_t(unsigned int, wsize, SMB2_MAX_BUFFER_SIZE);
377 smb2_negotiate_rsize(struct cifs_tcon *tcon, struct smb_vol *volume_info)
379 struct TCP_Server_Info *server = tcon->ses->server;
382 /* start with specified rsize, or default */
383 rsize = volume_info->rsize ? volume_info->rsize : CIFS_DEFAULT_IOSIZE;
384 rsize = min_t(unsigned int, rsize, server->max_read);
385 #ifdef CONFIG_CIFS_SMB_DIRECT
388 rsize = min_t(unsigned int,
389 rsize, server->smbd_conn->max_fragmented_recv_size);
391 rsize = min_t(unsigned int,
392 rsize, server->smbd_conn->max_readwrite_size);
396 if (!(server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU))
397 rsize = min_t(unsigned int, rsize, SMB2_MAX_BUFFER_SIZE);
403 smb3_negotiate_rsize(struct cifs_tcon *tcon, struct smb_vol *volume_info)
405 struct TCP_Server_Info *server = tcon->ses->server;
408 /* start with specified rsize, or default */
409 rsize = volume_info->rsize ? volume_info->rsize : SMB3_DEFAULT_IOSIZE;
410 rsize = min_t(unsigned int, rsize, server->max_read);
411 #ifdef CONFIG_CIFS_SMB_DIRECT
414 rsize = min_t(unsigned int,
415 rsize, server->smbd_conn->max_fragmented_recv_size);
417 rsize = min_t(unsigned int,
418 rsize, server->smbd_conn->max_readwrite_size);
422 if (!(server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU))
423 rsize = min_t(unsigned int, rsize, SMB2_MAX_BUFFER_SIZE);
429 parse_server_interfaces(struct network_interface_info_ioctl_rsp *buf,
431 struct cifs_server_iface **iface_list,
434 struct network_interface_info_ioctl_rsp *p;
435 struct sockaddr_in *addr4;
436 struct sockaddr_in6 *addr6;
437 struct iface_info_ipv4 *p4;
438 struct iface_info_ipv6 *p6;
439 struct cifs_server_iface *info;
449 * Fist pass: count and sanity check
452 bytes_left = buf_len;
454 while (bytes_left >= sizeof(*p)) {
456 next = le32_to_cpu(p->Next);
458 bytes_left -= sizeof(*p);
461 p = (struct network_interface_info_ioctl_rsp *)((u8 *)p+next);
466 cifs_dbg(VFS, "%s: malformed interface info\n", __func__);
471 if (bytes_left || p->Next)
472 cifs_dbg(VFS, "%s: incomplete interface info\n", __func__);
476 * Second pass: extract info to internal structure
479 *iface_list = kcalloc(nb_iface, sizeof(**iface_list), GFP_KERNEL);
486 bytes_left = buf_len;
488 while (bytes_left >= sizeof(*p)) {
489 info->speed = le64_to_cpu(p->LinkSpeed);
490 info->rdma_capable = le32_to_cpu(p->Capability & RDMA_CAPABLE);
491 info->rss_capable = le32_to_cpu(p->Capability & RSS_CAPABLE);
493 cifs_dbg(FYI, "%s: adding iface %zu\n", __func__, *iface_count);
494 cifs_dbg(FYI, "%s: speed %zu bps\n", __func__, info->speed);
495 cifs_dbg(FYI, "%s: capabilities 0x%08x\n", __func__,
496 le32_to_cpu(p->Capability));
500 * The kernel and wire socket structures have the same
501 * layout and use network byte order but make the
502 * conversion explicit in case either one changes.
505 addr4 = (struct sockaddr_in *)&info->sockaddr;
506 p4 = (struct iface_info_ipv4 *)p->Buffer;
507 addr4->sin_family = AF_INET;
508 memcpy(&addr4->sin_addr, &p4->IPv4Address, 4);
510 /* [MS-SMB2] 2.2.32.5.1.1 Clients MUST ignore these */
511 addr4->sin_port = cpu_to_be16(CIFS_PORT);
513 cifs_dbg(FYI, "%s: ipv4 %pI4\n", __func__,
517 addr6 = (struct sockaddr_in6 *)&info->sockaddr;
518 p6 = (struct iface_info_ipv6 *)p->Buffer;
519 addr6->sin6_family = AF_INET6;
520 memcpy(&addr6->sin6_addr, &p6->IPv6Address, 16);
522 /* [MS-SMB2] 2.2.32.5.1.2 Clients MUST ignore these */
523 addr6->sin6_flowinfo = 0;
524 addr6->sin6_scope_id = 0;
525 addr6->sin6_port = cpu_to_be16(CIFS_PORT);
527 cifs_dbg(FYI, "%s: ipv6 %pI6\n", __func__,
532 "%s: skipping unsupported socket family\n",
540 next = le32_to_cpu(p->Next);
543 p = (struct network_interface_info_ioctl_rsp *)((u8 *)p+next);
563 SMB3_request_interfaces(const unsigned int xid, struct cifs_tcon *tcon)
566 unsigned int ret_data_len = 0;
567 struct network_interface_info_ioctl_rsp *out_buf = NULL;
568 struct cifs_server_iface *iface_list;
570 struct cifs_ses *ses = tcon->ses;
572 rc = SMB2_ioctl(xid, tcon, NO_FILE_ID, NO_FILE_ID,
573 FSCTL_QUERY_NETWORK_INTERFACE_INFO, true /* is_fsctl */,
574 NULL /* no data input */, 0 /* no data input */,
575 CIFSMaxBufSize, (char **)&out_buf, &ret_data_len);
576 if (rc == -EOPNOTSUPP) {
578 "server does not support query network interfaces\n");
580 } else if (rc != 0) {
581 cifs_tcon_dbg(VFS, "error %d on ioctl to get interface list\n", rc);
585 rc = parse_server_interfaces(out_buf, ret_data_len,
586 &iface_list, &iface_count);
590 spin_lock(&ses->iface_lock);
591 kfree(ses->iface_list);
592 ses->iface_list = iface_list;
593 ses->iface_count = iface_count;
594 ses->iface_last_update = jiffies;
595 spin_unlock(&ses->iface_lock);
603 smb2_close_cached_fid(struct kref *ref)
605 struct cached_fid *cfid = container_of(ref, struct cached_fid,
608 if (cfid->is_valid) {
609 cifs_dbg(FYI, "clear cached root file handle\n");
610 SMB2_close(0, cfid->tcon, cfid->fid->persistent_fid,
611 cfid->fid->volatile_fid);
612 cfid->is_valid = false;
613 cfid->file_all_info_is_valid = false;
617 void close_shroot(struct cached_fid *cfid)
619 mutex_lock(&cfid->fid_mutex);
620 kref_put(&cfid->refcount, smb2_close_cached_fid);
621 mutex_unlock(&cfid->fid_mutex);
625 smb2_cached_lease_break(struct work_struct *work)
627 struct cached_fid *cfid = container_of(work,
628 struct cached_fid, lease_break);
634 * Open the directory at the root of a share
636 int open_shroot(unsigned int xid, struct cifs_tcon *tcon, struct cifs_fid *pfid)
638 struct cifs_ses *ses = tcon->ses;
639 struct TCP_Server_Info *server = ses->server;
640 struct cifs_open_parms oparms;
641 struct smb2_create_rsp *o_rsp = NULL;
642 struct smb2_query_info_rsp *qi_rsp = NULL;
644 struct smb_rqst rqst[2];
645 struct kvec rsp_iov[2];
646 struct kvec open_iov[SMB2_CREATE_IOV_SIZE];
647 struct kvec qi_iov[1];
649 __le16 utf16_path = 0; /* Null - since an open of top of share */
650 u8 oplock = SMB2_OPLOCK_LEVEL_II;
652 mutex_lock(&tcon->crfid.fid_mutex);
653 if (tcon->crfid.is_valid) {
654 cifs_dbg(FYI, "found a cached root file handle\n");
655 memcpy(pfid, tcon->crfid.fid, sizeof(struct cifs_fid));
656 kref_get(&tcon->crfid.refcount);
657 mutex_unlock(&tcon->crfid.fid_mutex);
662 * We do not hold the lock for the open because in case
663 * SMB2_open needs to reconnect, it will end up calling
664 * cifs_mark_open_files_invalid() which takes the lock again
665 * thus causing a deadlock
668 mutex_unlock(&tcon->crfid.fid_mutex);
670 if (smb3_encryption_required(tcon))
671 flags |= CIFS_TRANSFORM_REQ;
673 memset(rqst, 0, sizeof(rqst));
674 resp_buftype[0] = resp_buftype[1] = CIFS_NO_BUFFER;
675 memset(rsp_iov, 0, sizeof(rsp_iov));
678 memset(&open_iov, 0, sizeof(open_iov));
679 rqst[0].rq_iov = open_iov;
680 rqst[0].rq_nvec = SMB2_CREATE_IOV_SIZE;
683 oparms.create_options = 0;
684 oparms.desired_access = FILE_READ_ATTRIBUTES;
685 oparms.disposition = FILE_OPEN;
687 oparms.reconnect = false;
689 rc = SMB2_open_init(tcon, &rqst[0], &oplock, &oparms, &utf16_path);
692 smb2_set_next_command(tcon, &rqst[0]);
694 memset(&qi_iov, 0, sizeof(qi_iov));
695 rqst[1].rq_iov = qi_iov;
698 rc = SMB2_query_info_init(tcon, &rqst[1], COMPOUND_FID,
699 COMPOUND_FID, FILE_ALL_INFORMATION,
701 sizeof(struct smb2_file_all_info) +
702 PATH_MAX * 2, 0, NULL);
706 smb2_set_related(&rqst[1]);
708 rc = compound_send_recv(xid, ses, flags, 2, rqst,
709 resp_buftype, rsp_iov);
710 mutex_lock(&tcon->crfid.fid_mutex);
713 * Now we need to check again as the cached root might have
714 * been successfully re-opened from a concurrent process
717 if (tcon->crfid.is_valid) {
718 /* work was already done */
720 /* stash fids for close() later */
721 struct cifs_fid fid = {
722 .persistent_fid = pfid->persistent_fid,
723 .volatile_fid = pfid->volatile_fid,
727 * caller expects this func to set pfid to a valid
728 * cached root, so we copy the existing one and get a
731 memcpy(pfid, tcon->crfid.fid, sizeof(*pfid));
732 kref_get(&tcon->crfid.refcount);
734 mutex_unlock(&tcon->crfid.fid_mutex);
737 /* close extra handle outside of crit sec */
738 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
743 /* Cached root is still invalid, continue normaly */
746 if (rc == -EREMCHG) {
747 tcon->need_reconnect = true;
748 printk_once(KERN_WARNING "server share %s deleted\n",
754 o_rsp = (struct smb2_create_rsp *)rsp_iov[0].iov_base;
755 oparms.fid->persistent_fid = o_rsp->PersistentFileId;
756 oparms.fid->volatile_fid = o_rsp->VolatileFileId;
757 #ifdef CONFIG_CIFS_DEBUG2
758 oparms.fid->mid = le64_to_cpu(o_rsp->sync_hdr.MessageId);
759 #endif /* CIFS_DEBUG2 */
761 memcpy(tcon->crfid.fid, pfid, sizeof(struct cifs_fid));
762 tcon->crfid.tcon = tcon;
763 tcon->crfid.is_valid = true;
764 kref_init(&tcon->crfid.refcount);
766 /* BB TBD check to see if oplock level check can be removed below */
767 if (o_rsp->OplockLevel == SMB2_OPLOCK_LEVEL_LEASE) {
768 kref_get(&tcon->crfid.refcount);
769 smb2_parse_contexts(server, o_rsp,
771 oparms.fid->lease_key, &oplock, NULL);
775 qi_rsp = (struct smb2_query_info_rsp *)rsp_iov[1].iov_base;
776 if (le32_to_cpu(qi_rsp->OutputBufferLength) < sizeof(struct smb2_file_all_info))
778 if (!smb2_validate_and_copy_iov(
779 le16_to_cpu(qi_rsp->OutputBufferOffset),
780 sizeof(struct smb2_file_all_info),
781 &rsp_iov[1], sizeof(struct smb2_file_all_info),
782 (char *)&tcon->crfid.file_all_info))
783 tcon->crfid.file_all_info_is_valid = 1;
786 mutex_unlock(&tcon->crfid.fid_mutex);
788 SMB2_open_free(&rqst[0]);
789 SMB2_query_info_free(&rqst[1]);
790 free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base);
791 free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base);
796 smb3_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon)
799 __le16 srch_path = 0; /* Null - open root of share */
800 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
801 struct cifs_open_parms oparms;
803 bool no_cached_open = tcon->nohandlecache;
806 oparms.desired_access = FILE_READ_ATTRIBUTES;
807 oparms.disposition = FILE_OPEN;
808 oparms.create_options = 0;
810 oparms.reconnect = false;
813 rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL,
816 rc = open_shroot(xid, tcon, &fid);
821 SMB3_request_interfaces(xid, tcon);
823 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
824 FS_ATTRIBUTE_INFORMATION);
825 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
826 FS_DEVICE_INFORMATION);
827 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
828 FS_VOLUME_INFORMATION);
829 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
830 FS_SECTOR_SIZE_INFORMATION); /* SMB3 specific */
832 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
834 close_shroot(&tcon->crfid);
838 smb2_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon)
841 __le16 srch_path = 0; /* Null - open root of share */
842 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
843 struct cifs_open_parms oparms;
847 oparms.desired_access = FILE_READ_ATTRIBUTES;
848 oparms.disposition = FILE_OPEN;
849 oparms.create_options = 0;
851 oparms.reconnect = false;
853 rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL, NULL);
857 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
858 FS_ATTRIBUTE_INFORMATION);
859 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
860 FS_DEVICE_INFORMATION);
861 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
865 smb2_is_path_accessible(const unsigned int xid, struct cifs_tcon *tcon,
866 struct cifs_sb_info *cifs_sb, const char *full_path)
870 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
871 struct cifs_open_parms oparms;
874 if ((*full_path == 0) && tcon->crfid.is_valid)
877 utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb);
882 oparms.desired_access = FILE_READ_ATTRIBUTES;
883 oparms.disposition = FILE_OPEN;
884 if (backup_cred(cifs_sb))
885 oparms.create_options = CREATE_OPEN_BACKUP_INTENT;
887 oparms.create_options = 0;
889 oparms.reconnect = false;
891 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL, NULL);
897 rc = SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
903 smb2_get_srv_inum(const unsigned int xid, struct cifs_tcon *tcon,
904 struct cifs_sb_info *cifs_sb, const char *full_path,
905 u64 *uniqueid, FILE_ALL_INFO *data)
907 *uniqueid = le64_to_cpu(data->IndexNumber);
912 smb2_query_file_info(const unsigned int xid, struct cifs_tcon *tcon,
913 struct cifs_fid *fid, FILE_ALL_INFO *data)
916 struct smb2_file_all_info *smb2_data;
918 smb2_data = kzalloc(sizeof(struct smb2_file_all_info) + PATH_MAX * 2,
920 if (smb2_data == NULL)
923 rc = SMB2_query_info(xid, tcon, fid->persistent_fid, fid->volatile_fid,
926 move_smb2_info_to_cifs(data, smb2_data);
931 #ifdef CONFIG_CIFS_XATTR
933 move_smb2_ea_to_cifs(char *dst, size_t dst_size,
934 struct smb2_file_full_ea_info *src, size_t src_size,
935 const unsigned char *ea_name)
938 unsigned int ea_name_len = ea_name ? strlen(ea_name) : 0;
940 size_t buf_size = dst_size;
941 size_t name_len, value_len, user_name_len;
943 while (src_size > 0) {
944 name = &src->ea_data[0];
945 name_len = (size_t)src->ea_name_length;
946 value = &src->ea_data[src->ea_name_length + 1];
947 value_len = (size_t)le16_to_cpu(src->ea_value_length);
952 if (src_size < 8 + name_len + 1 + value_len) {
953 cifs_dbg(FYI, "EA entry goes beyond length of list\n");
959 if (ea_name_len == name_len &&
960 memcmp(ea_name, name, name_len) == 0) {
964 if (dst_size < value_len) {
968 memcpy(dst, value, value_len);
972 /* 'user.' plus a terminating null */
973 user_name_len = 5 + 1 + name_len;
976 /* skip copy - calc size only */
978 } else if (dst_size >= user_name_len) {
979 dst_size -= user_name_len;
980 memcpy(dst, "user.", 5);
982 memcpy(dst, src->ea_data, name_len);
988 /* stop before overrun buffer */
994 if (!src->next_entry_offset)
997 if (src_size < le32_to_cpu(src->next_entry_offset)) {
998 /* stop before overrun buffer */
1002 src_size -= le32_to_cpu(src->next_entry_offset);
1003 src = (void *)((char *)src +
1004 le32_to_cpu(src->next_entry_offset));
1007 /* didn't find the named attribute */
1016 smb2_query_eas(const unsigned int xid, struct cifs_tcon *tcon,
1017 const unsigned char *path, const unsigned char *ea_name,
1018 char *ea_data, size_t buf_size,
1019 struct cifs_sb_info *cifs_sb)
1023 struct kvec rsp_iov = {NULL, 0};
1024 int buftype = CIFS_NO_BUFFER;
1025 struct smb2_query_info_rsp *rsp;
1026 struct smb2_file_full_ea_info *info = NULL;
1028 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
1032 rc = smb2_query_info_compound(xid, tcon, utf16_path,
1034 FILE_FULL_EA_INFORMATION,
1037 MAX_SMB2_CREATE_RESPONSE_SIZE -
1038 MAX_SMB2_CLOSE_RESPONSE_SIZE,
1039 &rsp_iov, &buftype, cifs_sb);
1042 * If ea_name is NULL (listxattr) and there are no EAs,
1043 * return 0 as it's not an error. Otherwise, the specified
1044 * ea_name was not found.
1046 if (!ea_name && rc == -ENODATA)
1051 rsp = (struct smb2_query_info_rsp *)rsp_iov.iov_base;
1052 rc = smb2_validate_iov(le16_to_cpu(rsp->OutputBufferOffset),
1053 le32_to_cpu(rsp->OutputBufferLength),
1055 sizeof(struct smb2_file_full_ea_info));
1059 info = (struct smb2_file_full_ea_info *)(
1060 le16_to_cpu(rsp->OutputBufferOffset) + (char *)rsp);
1061 rc = move_smb2_ea_to_cifs(ea_data, buf_size, info,
1062 le32_to_cpu(rsp->OutputBufferLength), ea_name);
1066 free_rsp_buf(buftype, rsp_iov.iov_base);
1072 smb2_set_ea(const unsigned int xid, struct cifs_tcon *tcon,
1073 const char *path, const char *ea_name, const void *ea_value,
1074 const __u16 ea_value_len, const struct nls_table *nls_codepage,
1075 struct cifs_sb_info *cifs_sb)
1077 struct cifs_ses *ses = tcon->ses;
1078 __le16 *utf16_path = NULL;
1079 int ea_name_len = strlen(ea_name);
1082 struct smb_rqst rqst[3];
1083 int resp_buftype[3];
1084 struct kvec rsp_iov[3];
1085 struct kvec open_iov[SMB2_CREATE_IOV_SIZE];
1086 struct cifs_open_parms oparms;
1087 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
1088 struct cifs_fid fid;
1089 struct kvec si_iov[SMB2_SET_INFO_IOV_SIZE];
1090 unsigned int size[1];
1092 struct smb2_file_full_ea_info *ea = NULL;
1093 struct kvec close_iov[1];
1096 if (smb3_encryption_required(tcon))
1097 flags |= CIFS_TRANSFORM_REQ;
1099 if (ea_name_len > 255)
1102 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
1106 memset(rqst, 0, sizeof(rqst));
1107 resp_buftype[0] = resp_buftype[1] = resp_buftype[2] = CIFS_NO_BUFFER;
1108 memset(rsp_iov, 0, sizeof(rsp_iov));
1110 if (ses->server->ops->query_all_EAs) {
1112 rc = ses->server->ops->query_all_EAs(xid, tcon, path,
1121 memset(&open_iov, 0, sizeof(open_iov));
1122 rqst[0].rq_iov = open_iov;
1123 rqst[0].rq_nvec = SMB2_CREATE_IOV_SIZE;
1125 memset(&oparms, 0, sizeof(oparms));
1127 oparms.desired_access = FILE_WRITE_EA;
1128 oparms.disposition = FILE_OPEN;
1129 if (backup_cred(cifs_sb))
1130 oparms.create_options = CREATE_OPEN_BACKUP_INTENT;
1132 oparms.create_options = 0;
1134 oparms.reconnect = false;
1136 rc = SMB2_open_init(tcon, &rqst[0], &oplock, &oparms, utf16_path);
1139 smb2_set_next_command(tcon, &rqst[0]);
1143 memset(&si_iov, 0, sizeof(si_iov));
1144 rqst[1].rq_iov = si_iov;
1145 rqst[1].rq_nvec = 1;
1147 len = sizeof(ea) + ea_name_len + ea_value_len + 1;
1148 ea = kzalloc(len, GFP_KERNEL);
1154 ea->ea_name_length = ea_name_len;
1155 ea->ea_value_length = cpu_to_le16(ea_value_len);
1156 memcpy(ea->ea_data, ea_name, ea_name_len + 1);
1157 memcpy(ea->ea_data + ea_name_len + 1, ea_value, ea_value_len);
1162 rc = SMB2_set_info_init(tcon, &rqst[1], COMPOUND_FID,
1163 COMPOUND_FID, current->tgid,
1164 FILE_FULL_EA_INFORMATION,
1165 SMB2_O_INFO_FILE, 0, data, size);
1166 smb2_set_next_command(tcon, &rqst[1]);
1167 smb2_set_related(&rqst[1]);
1171 memset(&close_iov, 0, sizeof(close_iov));
1172 rqst[2].rq_iov = close_iov;
1173 rqst[2].rq_nvec = 1;
1174 rc = SMB2_close_init(tcon, &rqst[2], COMPOUND_FID, COMPOUND_FID);
1175 smb2_set_related(&rqst[2]);
1177 rc = compound_send_recv(xid, ses, flags, 3, rqst,
1178 resp_buftype, rsp_iov);
1183 SMB2_open_free(&rqst[0]);
1184 SMB2_set_info_free(&rqst[1]);
1185 SMB2_close_free(&rqst[2]);
1186 free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base);
1187 free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base);
1188 free_rsp_buf(resp_buftype[2], rsp_iov[2].iov_base);
1194 smb2_can_echo(struct TCP_Server_Info *server)
1196 return server->echoes;
1200 smb2_clear_stats(struct cifs_tcon *tcon)
1204 for (i = 0; i < NUMBER_OF_SMB2_COMMANDS; i++) {
1205 atomic_set(&tcon->stats.smb2_stats.smb2_com_sent[i], 0);
1206 atomic_set(&tcon->stats.smb2_stats.smb2_com_failed[i], 0);
1211 smb2_dump_share_caps(struct seq_file *m, struct cifs_tcon *tcon)
1213 seq_puts(m, "\n\tShare Capabilities:");
1214 if (tcon->capabilities & SMB2_SHARE_CAP_DFS)
1215 seq_puts(m, " DFS,");
1216 if (tcon->capabilities & SMB2_SHARE_CAP_CONTINUOUS_AVAILABILITY)
1217 seq_puts(m, " CONTINUOUS AVAILABILITY,");
1218 if (tcon->capabilities & SMB2_SHARE_CAP_SCALEOUT)
1219 seq_puts(m, " SCALEOUT,");
1220 if (tcon->capabilities & SMB2_SHARE_CAP_CLUSTER)
1221 seq_puts(m, " CLUSTER,");
1222 if (tcon->capabilities & SMB2_SHARE_CAP_ASYMMETRIC)
1223 seq_puts(m, " ASYMMETRIC,");
1224 if (tcon->capabilities == 0)
1225 seq_puts(m, " None");
1226 if (tcon->ss_flags & SSINFO_FLAGS_ALIGNED_DEVICE)
1227 seq_puts(m, " Aligned,");
1228 if (tcon->ss_flags & SSINFO_FLAGS_PARTITION_ALIGNED_ON_DEVICE)
1229 seq_puts(m, " Partition Aligned,");
1230 if (tcon->ss_flags & SSINFO_FLAGS_NO_SEEK_PENALTY)
1231 seq_puts(m, " SSD,");
1232 if (tcon->ss_flags & SSINFO_FLAGS_TRIM_ENABLED)
1233 seq_puts(m, " TRIM-support,");
1235 seq_printf(m, "\tShare Flags: 0x%x", tcon->share_flags);
1236 seq_printf(m, "\n\ttid: 0x%x", tcon->tid);
1237 if (tcon->perf_sector_size)
1238 seq_printf(m, "\tOptimal sector size: 0x%x",
1239 tcon->perf_sector_size);
1240 seq_printf(m, "\tMaximal Access: 0x%x", tcon->maximal_access);
1244 smb2_print_stats(struct seq_file *m, struct cifs_tcon *tcon)
1246 atomic_t *sent = tcon->stats.smb2_stats.smb2_com_sent;
1247 atomic_t *failed = tcon->stats.smb2_stats.smb2_com_failed;
1250 * Can't display SMB2_NEGOTIATE, SESSION_SETUP, LOGOFF, CANCEL and ECHO
1251 * totals (requests sent) since those SMBs are per-session not per tcon
1253 seq_printf(m, "\nBytes read: %llu Bytes written: %llu",
1254 (long long)(tcon->bytes_read),
1255 (long long)(tcon->bytes_written));
1256 seq_printf(m, "\nOpen files: %d total (local), %d open on server",
1257 atomic_read(&tcon->num_local_opens),
1258 atomic_read(&tcon->num_remote_opens));
1259 seq_printf(m, "\nTreeConnects: %d total %d failed",
1260 atomic_read(&sent[SMB2_TREE_CONNECT_HE]),
1261 atomic_read(&failed[SMB2_TREE_CONNECT_HE]));
1262 seq_printf(m, "\nTreeDisconnects: %d total %d failed",
1263 atomic_read(&sent[SMB2_TREE_DISCONNECT_HE]),
1264 atomic_read(&failed[SMB2_TREE_DISCONNECT_HE]));
1265 seq_printf(m, "\nCreates: %d total %d failed",
1266 atomic_read(&sent[SMB2_CREATE_HE]),
1267 atomic_read(&failed[SMB2_CREATE_HE]));
1268 seq_printf(m, "\nCloses: %d total %d failed",
1269 atomic_read(&sent[SMB2_CLOSE_HE]),
1270 atomic_read(&failed[SMB2_CLOSE_HE]));
1271 seq_printf(m, "\nFlushes: %d total %d failed",
1272 atomic_read(&sent[SMB2_FLUSH_HE]),
1273 atomic_read(&failed[SMB2_FLUSH_HE]));
1274 seq_printf(m, "\nReads: %d total %d failed",
1275 atomic_read(&sent[SMB2_READ_HE]),
1276 atomic_read(&failed[SMB2_READ_HE]));
1277 seq_printf(m, "\nWrites: %d total %d failed",
1278 atomic_read(&sent[SMB2_WRITE_HE]),
1279 atomic_read(&failed[SMB2_WRITE_HE]));
1280 seq_printf(m, "\nLocks: %d total %d failed",
1281 atomic_read(&sent[SMB2_LOCK_HE]),
1282 atomic_read(&failed[SMB2_LOCK_HE]));
1283 seq_printf(m, "\nIOCTLs: %d total %d failed",
1284 atomic_read(&sent[SMB2_IOCTL_HE]),
1285 atomic_read(&failed[SMB2_IOCTL_HE]));
1286 seq_printf(m, "\nQueryDirectories: %d total %d failed",
1287 atomic_read(&sent[SMB2_QUERY_DIRECTORY_HE]),
1288 atomic_read(&failed[SMB2_QUERY_DIRECTORY_HE]));
1289 seq_printf(m, "\nChangeNotifies: %d total %d failed",
1290 atomic_read(&sent[SMB2_CHANGE_NOTIFY_HE]),
1291 atomic_read(&failed[SMB2_CHANGE_NOTIFY_HE]));
1292 seq_printf(m, "\nQueryInfos: %d total %d failed",
1293 atomic_read(&sent[SMB2_QUERY_INFO_HE]),
1294 atomic_read(&failed[SMB2_QUERY_INFO_HE]));
1295 seq_printf(m, "\nSetInfos: %d total %d failed",
1296 atomic_read(&sent[SMB2_SET_INFO_HE]),
1297 atomic_read(&failed[SMB2_SET_INFO_HE]));
1298 seq_printf(m, "\nOplockBreaks: %d sent %d failed",
1299 atomic_read(&sent[SMB2_OPLOCK_BREAK_HE]),
1300 atomic_read(&failed[SMB2_OPLOCK_BREAK_HE]));
1304 smb2_set_fid(struct cifsFileInfo *cfile, struct cifs_fid *fid, __u32 oplock)
1306 struct cifsInodeInfo *cinode = CIFS_I(d_inode(cfile->dentry));
1307 struct TCP_Server_Info *server = tlink_tcon(cfile->tlink)->ses->server;
1309 cfile->fid.persistent_fid = fid->persistent_fid;
1310 cfile->fid.volatile_fid = fid->volatile_fid;
1311 #ifdef CONFIG_CIFS_DEBUG2
1312 cfile->fid.mid = fid->mid;
1313 #endif /* CIFS_DEBUG2 */
1314 server->ops->set_oplock_level(cinode, oplock, fid->epoch,
1316 cinode->can_cache_brlcks = CIFS_CACHE_WRITE(cinode);
1317 memcpy(cfile->fid.create_guid, fid->create_guid, 16);
1321 smb2_close_file(const unsigned int xid, struct cifs_tcon *tcon,
1322 struct cifs_fid *fid)
1324 SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
1328 SMB2_request_res_key(const unsigned int xid, struct cifs_tcon *tcon,
1329 u64 persistent_fid, u64 volatile_fid,
1330 struct copychunk_ioctl *pcchunk)
1333 unsigned int ret_data_len;
1334 struct resume_key_req *res_key;
1336 rc = SMB2_ioctl(xid, tcon, persistent_fid, volatile_fid,
1337 FSCTL_SRV_REQUEST_RESUME_KEY, true /* is_fsctl */,
1338 NULL, 0 /* no input */, CIFSMaxBufSize,
1339 (char **)&res_key, &ret_data_len);
1342 cifs_tcon_dbg(VFS, "refcpy ioctl error %d getting resume key\n", rc);
1343 goto req_res_key_exit;
1345 if (ret_data_len < sizeof(struct resume_key_req)) {
1346 cifs_tcon_dbg(VFS, "Invalid refcopy resume key length\n");
1348 goto req_res_key_exit;
1350 memcpy(pcchunk->SourceKey, res_key->ResumeKey, COPY_CHUNK_RES_KEY_SIZE);
1358 smb2_ioctl_query_info(const unsigned int xid,
1359 struct cifs_tcon *tcon,
1360 __le16 *path, int is_dir,
1363 struct cifs_ses *ses = tcon->ses;
1364 char __user *arg = (char __user *)p;
1365 struct smb_query_info qi;
1366 struct smb_query_info __user *pqi;
1369 struct smb2_query_info_rsp *qi_rsp = NULL;
1370 struct smb2_ioctl_rsp *io_rsp = NULL;
1371 void *buffer = NULL;
1372 struct smb_rqst rqst[3];
1373 int resp_buftype[3];
1374 struct kvec rsp_iov[3];
1375 struct kvec open_iov[SMB2_CREATE_IOV_SIZE];
1376 struct cifs_open_parms oparms;
1377 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
1378 struct cifs_fid fid;
1379 struct kvec qi_iov[1];
1380 struct kvec io_iov[SMB2_IOCTL_IOV_SIZE];
1381 struct kvec si_iov[SMB2_SET_INFO_IOV_SIZE];
1382 struct kvec close_iov[1];
1383 unsigned int size[2];
1386 memset(rqst, 0, sizeof(rqst));
1387 resp_buftype[0] = resp_buftype[1] = resp_buftype[2] = CIFS_NO_BUFFER;
1388 memset(rsp_iov, 0, sizeof(rsp_iov));
1390 if (copy_from_user(&qi, arg, sizeof(struct smb_query_info)))
1393 if (qi.output_buffer_length > 1024)
1396 if (!ses || !(ses->server))
1399 if (smb3_encryption_required(tcon))
1400 flags |= CIFS_TRANSFORM_REQ;
1402 buffer = kmalloc(qi.output_buffer_length, GFP_KERNEL);
1406 if (copy_from_user(buffer, arg + sizeof(struct smb_query_info),
1407 qi.output_buffer_length)) {
1413 memset(&open_iov, 0, sizeof(open_iov));
1414 rqst[0].rq_iov = open_iov;
1415 rqst[0].rq_nvec = SMB2_CREATE_IOV_SIZE;
1417 memset(&oparms, 0, sizeof(oparms));
1419 oparms.disposition = FILE_OPEN;
1421 oparms.create_options = CREATE_NOT_FILE;
1423 oparms.create_options = CREATE_NOT_DIR;
1425 oparms.reconnect = false;
1427 if (qi.flags & PASSTHRU_FSCTL) {
1428 switch (qi.info_type & FSCTL_DEVICE_ACCESS_MASK) {
1429 case FSCTL_DEVICE_ACCESS_FILE_READ_WRITE_ACCESS:
1430 oparms.desired_access = FILE_READ_DATA | FILE_WRITE_DATA | FILE_READ_ATTRIBUTES | SYNCHRONIZE;
1432 case FSCTL_DEVICE_ACCESS_FILE_ANY_ACCESS:
1433 oparms.desired_access = GENERIC_ALL;
1435 case FSCTL_DEVICE_ACCESS_FILE_READ_ACCESS:
1436 oparms.desired_access = GENERIC_READ;
1438 case FSCTL_DEVICE_ACCESS_FILE_WRITE_ACCESS:
1439 oparms.desired_access = GENERIC_WRITE;
1442 } else if (qi.flags & PASSTHRU_SET_INFO) {
1443 oparms.desired_access = GENERIC_WRITE;
1445 oparms.desired_access = FILE_READ_ATTRIBUTES | READ_CONTROL;
1448 rc = SMB2_open_init(tcon, &rqst[0], &oplock, &oparms, path);
1451 smb2_set_next_command(tcon, &rqst[0]);
1454 if (qi.flags & PASSTHRU_FSCTL) {
1455 /* Can eventually relax perm check since server enforces too */
1456 if (!capable(CAP_SYS_ADMIN))
1459 memset(&io_iov, 0, sizeof(io_iov));
1460 rqst[1].rq_iov = io_iov;
1461 rqst[1].rq_nvec = SMB2_IOCTL_IOV_SIZE;
1463 rc = SMB2_ioctl_init(tcon, &rqst[1],
1464 COMPOUND_FID, COMPOUND_FID,
1465 qi.info_type, true, buffer,
1466 qi.output_buffer_length,
1469 } else if (qi.flags == PASSTHRU_SET_INFO) {
1470 /* Can eventually relax perm check since server enforces too */
1471 if (!capable(CAP_SYS_ADMIN))
1474 memset(&si_iov, 0, sizeof(si_iov));
1475 rqst[1].rq_iov = si_iov;
1476 rqst[1].rq_nvec = 1;
1481 rc = SMB2_set_info_init(tcon, &rqst[1],
1482 COMPOUND_FID, COMPOUND_FID,
1484 FILE_END_OF_FILE_INFORMATION,
1485 SMB2_O_INFO_FILE, 0, data, size);
1487 } else if (qi.flags == PASSTHRU_QUERY_INFO) {
1488 memset(&qi_iov, 0, sizeof(qi_iov));
1489 rqst[1].rq_iov = qi_iov;
1490 rqst[1].rq_nvec = 1;
1492 rc = SMB2_query_info_init(tcon, &rqst[1], COMPOUND_FID,
1493 COMPOUND_FID, qi.file_info_class,
1494 qi.info_type, qi.additional_information,
1495 qi.input_buffer_length,
1496 qi.output_buffer_length, buffer);
1497 } else { /* unknown flags */
1498 cifs_tcon_dbg(VFS, "invalid passthru query flags: 0x%x\n", qi.flags);
1504 smb2_set_next_command(tcon, &rqst[1]);
1505 smb2_set_related(&rqst[1]);
1508 memset(&close_iov, 0, sizeof(close_iov));
1509 rqst[2].rq_iov = close_iov;
1510 rqst[2].rq_nvec = 1;
1512 rc = SMB2_close_init(tcon, &rqst[2], COMPOUND_FID, COMPOUND_FID);
1515 smb2_set_related(&rqst[2]);
1517 rc = compound_send_recv(xid, ses, flags, 3, rqst,
1518 resp_buftype, rsp_iov);
1521 if (qi.flags & PASSTHRU_FSCTL) {
1522 pqi = (struct smb_query_info __user *)arg;
1523 io_rsp = (struct smb2_ioctl_rsp *)rsp_iov[1].iov_base;
1524 if (le32_to_cpu(io_rsp->OutputCount) < qi.input_buffer_length)
1525 qi.input_buffer_length = le32_to_cpu(io_rsp->OutputCount);
1526 if (qi.input_buffer_length > 0 &&
1527 le32_to_cpu(io_rsp->OutputOffset) + qi.input_buffer_length > rsp_iov[1].iov_len) {
1531 if (copy_to_user(&pqi->input_buffer_length, &qi.input_buffer_length,
1532 sizeof(qi.input_buffer_length))) {
1536 if (copy_to_user((void __user *)pqi + sizeof(struct smb_query_info),
1537 (const void *)io_rsp + le32_to_cpu(io_rsp->OutputOffset),
1538 qi.input_buffer_length)) {
1543 pqi = (struct smb_query_info __user *)arg;
1544 qi_rsp = (struct smb2_query_info_rsp *)rsp_iov[1].iov_base;
1545 if (le32_to_cpu(qi_rsp->OutputBufferLength) < qi.input_buffer_length)
1546 qi.input_buffer_length = le32_to_cpu(qi_rsp->OutputBufferLength);
1547 if (copy_to_user(&pqi->input_buffer_length, &qi.input_buffer_length,
1548 sizeof(qi.input_buffer_length))) {
1552 if (copy_to_user(pqi + 1, qi_rsp->Buffer, qi.input_buffer_length)) {
1560 SMB2_open_free(&rqst[0]);
1561 if (qi.flags & PASSTHRU_FSCTL)
1562 SMB2_ioctl_free(&rqst[1]);
1564 SMB2_query_info_free(&rqst[1]);
1566 SMB2_close_free(&rqst[2]);
1567 free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base);
1568 free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base);
1569 free_rsp_buf(resp_buftype[2], rsp_iov[2].iov_base);
1574 smb2_copychunk_range(const unsigned int xid,
1575 struct cifsFileInfo *srcfile,
1576 struct cifsFileInfo *trgtfile, u64 src_off,
1577 u64 len, u64 dest_off)
1580 unsigned int ret_data_len;
1581 struct copychunk_ioctl *pcchunk;
1582 struct copychunk_ioctl_rsp *retbuf = NULL;
1583 struct cifs_tcon *tcon;
1584 int chunks_copied = 0;
1585 bool chunk_sizes_updated = false;
1586 ssize_t bytes_written, total_bytes_written = 0;
1588 pcchunk = kmalloc(sizeof(struct copychunk_ioctl), GFP_KERNEL);
1590 if (pcchunk == NULL)
1593 cifs_dbg(FYI, "%s: about to call request res key\n", __func__);
1594 /* Request a key from the server to identify the source of the copy */
1595 rc = SMB2_request_res_key(xid, tlink_tcon(srcfile->tlink),
1596 srcfile->fid.persistent_fid,
1597 srcfile->fid.volatile_fid, pcchunk);
1599 /* Note: request_res_key sets res_key null only if rc !=0 */
1603 /* For now array only one chunk long, will make more flexible later */
1604 pcchunk->ChunkCount = cpu_to_le32(1);
1605 pcchunk->Reserved = 0;
1606 pcchunk->Reserved2 = 0;
1608 tcon = tlink_tcon(trgtfile->tlink);
1611 pcchunk->SourceOffset = cpu_to_le64(src_off);
1612 pcchunk->TargetOffset = cpu_to_le64(dest_off);
1614 cpu_to_le32(min_t(u32, len, tcon->max_bytes_chunk));
1616 /* Request server copy to target from src identified by key */
1617 rc = SMB2_ioctl(xid, tcon, trgtfile->fid.persistent_fid,
1618 trgtfile->fid.volatile_fid, FSCTL_SRV_COPYCHUNK_WRITE,
1619 true /* is_fsctl */, (char *)pcchunk,
1620 sizeof(struct copychunk_ioctl), CIFSMaxBufSize,
1621 (char **)&retbuf, &ret_data_len);
1624 sizeof(struct copychunk_ioctl_rsp)) {
1625 cifs_tcon_dbg(VFS, "invalid cchunk response size\n");
1629 if (retbuf->TotalBytesWritten == 0) {
1630 cifs_dbg(FYI, "no bytes copied\n");
1635 * Check if server claimed to write more than we asked
1637 if (le32_to_cpu(retbuf->TotalBytesWritten) >
1638 le32_to_cpu(pcchunk->Length)) {
1639 cifs_tcon_dbg(VFS, "invalid copy chunk response\n");
1643 if (le32_to_cpu(retbuf->ChunksWritten) != 1) {
1644 cifs_tcon_dbg(VFS, "invalid num chunks written\n");
1650 bytes_written = le32_to_cpu(retbuf->TotalBytesWritten);
1651 src_off += bytes_written;
1652 dest_off += bytes_written;
1653 len -= bytes_written;
1654 total_bytes_written += bytes_written;
1656 cifs_dbg(FYI, "Chunks %d PartialChunk %d Total %zu\n",
1657 le32_to_cpu(retbuf->ChunksWritten),
1658 le32_to_cpu(retbuf->ChunkBytesWritten),
1660 } else if (rc == -EINVAL) {
1661 if (ret_data_len != sizeof(struct copychunk_ioctl_rsp))
1664 cifs_dbg(FYI, "MaxChunks %d BytesChunk %d MaxCopy %d\n",
1665 le32_to_cpu(retbuf->ChunksWritten),
1666 le32_to_cpu(retbuf->ChunkBytesWritten),
1667 le32_to_cpu(retbuf->TotalBytesWritten));
1670 * Check if this is the first request using these sizes,
1671 * (ie check if copy succeed once with original sizes
1672 * and check if the server gave us different sizes after
1673 * we already updated max sizes on previous request).
1674 * if not then why is the server returning an error now
1676 if ((chunks_copied != 0) || chunk_sizes_updated)
1679 /* Check that server is not asking us to grow size */
1680 if (le32_to_cpu(retbuf->ChunkBytesWritten) <
1681 tcon->max_bytes_chunk)
1682 tcon->max_bytes_chunk =
1683 le32_to_cpu(retbuf->ChunkBytesWritten);
1685 goto cchunk_out; /* server gave us bogus size */
1687 /* No need to change MaxChunks since already set to 1 */
1688 chunk_sizes_updated = true;
1699 return total_bytes_written;
1703 smb2_flush_file(const unsigned int xid, struct cifs_tcon *tcon,
1704 struct cifs_fid *fid)
1706 return SMB2_flush(xid, tcon, fid->persistent_fid, fid->volatile_fid);
1710 smb2_read_data_offset(char *buf)
1712 struct smb2_read_rsp *rsp = (struct smb2_read_rsp *)buf;
1714 return rsp->DataOffset;
1718 smb2_read_data_length(char *buf, bool in_remaining)
1720 struct smb2_read_rsp *rsp = (struct smb2_read_rsp *)buf;
1723 return le32_to_cpu(rsp->DataRemaining);
1725 return le32_to_cpu(rsp->DataLength);
1730 smb2_sync_read(const unsigned int xid, struct cifs_fid *pfid,
1731 struct cifs_io_parms *parms, unsigned int *bytes_read,
1732 char **buf, int *buf_type)
1734 parms->persistent_fid = pfid->persistent_fid;
1735 parms->volatile_fid = pfid->volatile_fid;
1736 return SMB2_read(xid, parms, bytes_read, buf, buf_type);
1740 smb2_sync_write(const unsigned int xid, struct cifs_fid *pfid,
1741 struct cifs_io_parms *parms, unsigned int *written,
1742 struct kvec *iov, unsigned long nr_segs)
1745 parms->persistent_fid = pfid->persistent_fid;
1746 parms->volatile_fid = pfid->volatile_fid;
1747 return SMB2_write(xid, parms, written, iov, nr_segs);
1750 /* Set or clear the SPARSE_FILE attribute based on value passed in setsparse */
1751 static bool smb2_set_sparse(const unsigned int xid, struct cifs_tcon *tcon,
1752 struct cifsFileInfo *cfile, struct inode *inode, __u8 setsparse)
1754 struct cifsInodeInfo *cifsi;
1757 cifsi = CIFS_I(inode);
1759 /* if file already sparse don't bother setting sparse again */
1760 if ((cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) && setsparse)
1761 return true; /* already sparse */
1763 if (!(cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) && !setsparse)
1764 return true; /* already not sparse */
1767 * Can't check for sparse support on share the usual way via the
1768 * FS attribute info (FILE_SUPPORTS_SPARSE_FILES) on the share
1769 * since Samba server doesn't set the flag on the share, yet
1770 * supports the set sparse FSCTL and returns sparse correctly
1771 * in the file attributes. If we fail setting sparse though we
1772 * mark that server does not support sparse files for this share
1773 * to avoid repeatedly sending the unsupported fsctl to server
1774 * if the file is repeatedly extended.
1776 if (tcon->broken_sparse_sup)
1779 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
1780 cfile->fid.volatile_fid, FSCTL_SET_SPARSE,
1782 &setsparse, 1, CIFSMaxBufSize, NULL, NULL);
1784 tcon->broken_sparse_sup = true;
1785 cifs_dbg(FYI, "set sparse rc = %d\n", rc);
1790 cifsi->cifsAttrs |= FILE_ATTRIBUTE_SPARSE_FILE;
1792 cifsi->cifsAttrs &= (~FILE_ATTRIBUTE_SPARSE_FILE);
1798 smb2_set_file_size(const unsigned int xid, struct cifs_tcon *tcon,
1799 struct cifsFileInfo *cfile, __u64 size, bool set_alloc)
1801 __le64 eof = cpu_to_le64(size);
1802 struct inode *inode;
1805 * If extending file more than one page make sparse. Many Linux fs
1806 * make files sparse by default when extending via ftruncate
1808 inode = d_inode(cfile->dentry);
1810 if (!set_alloc && (size > inode->i_size + 8192)) {
1811 __u8 set_sparse = 1;
1813 /* whether set sparse succeeds or not, extend the file */
1814 smb2_set_sparse(xid, tcon, cfile, inode, set_sparse);
1817 return SMB2_set_eof(xid, tcon, cfile->fid.persistent_fid,
1818 cfile->fid.volatile_fid, cfile->pid, &eof);
1822 smb2_duplicate_extents(const unsigned int xid,
1823 struct cifsFileInfo *srcfile,
1824 struct cifsFileInfo *trgtfile, u64 src_off,
1825 u64 len, u64 dest_off)
1828 unsigned int ret_data_len;
1829 struct duplicate_extents_to_file dup_ext_buf;
1830 struct cifs_tcon *tcon = tlink_tcon(trgtfile->tlink);
1832 /* server fileays advertise duplicate extent support with this flag */
1833 if ((le32_to_cpu(tcon->fsAttrInfo.Attributes) &
1834 FILE_SUPPORTS_BLOCK_REFCOUNTING) == 0)
1837 dup_ext_buf.VolatileFileHandle = srcfile->fid.volatile_fid;
1838 dup_ext_buf.PersistentFileHandle = srcfile->fid.persistent_fid;
1839 dup_ext_buf.SourceFileOffset = cpu_to_le64(src_off);
1840 dup_ext_buf.TargetFileOffset = cpu_to_le64(dest_off);
1841 dup_ext_buf.ByteCount = cpu_to_le64(len);
1842 cifs_dbg(FYI, "Duplicate extents: src off %lld dst off %lld len %lld\n",
1843 src_off, dest_off, len);
1845 rc = smb2_set_file_size(xid, tcon, trgtfile, dest_off + len, false);
1847 goto duplicate_extents_out;
1849 rc = SMB2_ioctl(xid, tcon, trgtfile->fid.persistent_fid,
1850 trgtfile->fid.volatile_fid,
1851 FSCTL_DUPLICATE_EXTENTS_TO_FILE,
1852 true /* is_fsctl */,
1853 (char *)&dup_ext_buf,
1854 sizeof(struct duplicate_extents_to_file),
1855 CIFSMaxBufSize, NULL,
1858 if (ret_data_len > 0)
1859 cifs_dbg(FYI, "Non-zero response length in duplicate extents\n");
1861 duplicate_extents_out:
1866 smb2_set_compression(const unsigned int xid, struct cifs_tcon *tcon,
1867 struct cifsFileInfo *cfile)
1869 return SMB2_set_compression(xid, tcon, cfile->fid.persistent_fid,
1870 cfile->fid.volatile_fid);
1874 smb3_set_integrity(const unsigned int xid, struct cifs_tcon *tcon,
1875 struct cifsFileInfo *cfile)
1877 struct fsctl_set_integrity_information_req integr_info;
1878 unsigned int ret_data_len;
1880 integr_info.ChecksumAlgorithm = cpu_to_le16(CHECKSUM_TYPE_UNCHANGED);
1881 integr_info.Flags = 0;
1882 integr_info.Reserved = 0;
1884 return SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
1885 cfile->fid.volatile_fid,
1886 FSCTL_SET_INTEGRITY_INFORMATION,
1887 true /* is_fsctl */,
1888 (char *)&integr_info,
1889 sizeof(struct fsctl_set_integrity_information_req),
1890 CIFSMaxBufSize, NULL,
1895 /* GMT Token is @GMT-YYYY.MM.DD-HH.MM.SS Unicode which is 48 bytes + null */
1896 #define GMT_TOKEN_SIZE 50
1898 #define MIN_SNAPSHOT_ARRAY_SIZE 16 /* See MS-SMB2 section 3.3.5.15.1 */
1901 * Input buffer contains (empty) struct smb_snapshot array with size filled in
1902 * For output see struct SRV_SNAPSHOT_ARRAY in MS-SMB2 section 2.2.32.2
1905 smb3_enum_snapshots(const unsigned int xid, struct cifs_tcon *tcon,
1906 struct cifsFileInfo *cfile, void __user *ioc_buf)
1908 char *retbuf = NULL;
1909 unsigned int ret_data_len = 0;
1911 u32 max_response_size;
1912 struct smb_snapshot_array snapshot_in;
1915 * On the first query to enumerate the list of snapshots available
1916 * for this volume the buffer begins with 0 (number of snapshots
1917 * which can be returned is zero since at that point we do not know
1918 * how big the buffer needs to be). On the second query,
1919 * it (ret_data_len) is set to number of snapshots so we can
1920 * know to set the maximum response size larger (see below).
1922 if (get_user(ret_data_len, (unsigned int __user *)ioc_buf))
1926 * Note that for snapshot queries that servers like Azure expect that
1927 * the first query be minimal size (and just used to get the number/size
1928 * of previous versions) so response size must be specified as EXACTLY
1929 * sizeof(struct snapshot_array) which is 16 when rounded up to multiple
1932 if (ret_data_len == 0)
1933 max_response_size = MIN_SNAPSHOT_ARRAY_SIZE;
1935 max_response_size = CIFSMaxBufSize;
1937 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
1938 cfile->fid.volatile_fid,
1939 FSCTL_SRV_ENUMERATE_SNAPSHOTS,
1940 true /* is_fsctl */,
1941 NULL, 0 /* no input data */, max_response_size,
1944 cifs_dbg(FYI, "enum snaphots ioctl returned %d and ret buflen is %d\n",
1949 if (ret_data_len && (ioc_buf != NULL) && (retbuf != NULL)) {
1951 if (copy_from_user(&snapshot_in, ioc_buf,
1952 sizeof(struct smb_snapshot_array))) {
1959 * Check for min size, ie not large enough to fit even one GMT
1960 * token (snapshot). On the first ioctl some users may pass in
1961 * smaller size (or zero) to simply get the size of the array
1962 * so the user space caller can allocate sufficient memory
1963 * and retry the ioctl again with larger array size sufficient
1964 * to hold all of the snapshot GMT tokens on the second try.
1966 if (snapshot_in.snapshot_array_size < GMT_TOKEN_SIZE)
1967 ret_data_len = sizeof(struct smb_snapshot_array);
1970 * We return struct SRV_SNAPSHOT_ARRAY, followed by
1971 * the snapshot array (of 50 byte GMT tokens) each
1972 * representing an available previous version of the data
1974 if (ret_data_len > (snapshot_in.snapshot_array_size +
1975 sizeof(struct smb_snapshot_array)))
1976 ret_data_len = snapshot_in.snapshot_array_size +
1977 sizeof(struct smb_snapshot_array);
1979 if (copy_to_user(ioc_buf, retbuf, ret_data_len))
1988 smb2_query_dir_first(const unsigned int xid, struct cifs_tcon *tcon,
1989 const char *path, struct cifs_sb_info *cifs_sb,
1990 struct cifs_fid *fid, __u16 search_flags,
1991 struct cifs_search_info *srch_inf)
1995 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
1996 struct cifs_open_parms oparms;
1998 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
2003 oparms.desired_access = FILE_READ_ATTRIBUTES | FILE_READ_DATA;
2004 oparms.disposition = FILE_OPEN;
2005 if (backup_cred(cifs_sb))
2006 oparms.create_options = CREATE_OPEN_BACKUP_INTENT;
2008 oparms.create_options = 0;
2010 oparms.reconnect = false;
2012 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL, NULL);
2015 cifs_dbg(FYI, "open dir failed rc=%d\n", rc);
2019 srch_inf->entries_in_buffer = 0;
2020 srch_inf->index_of_last_entry = 2;
2022 rc = SMB2_query_directory(xid, tcon, fid->persistent_fid,
2023 fid->volatile_fid, 0, srch_inf);
2025 cifs_dbg(FYI, "query directory failed rc=%d\n", rc);
2026 SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
2032 smb2_query_dir_next(const unsigned int xid, struct cifs_tcon *tcon,
2033 struct cifs_fid *fid, __u16 search_flags,
2034 struct cifs_search_info *srch_inf)
2036 return SMB2_query_directory(xid, tcon, fid->persistent_fid,
2037 fid->volatile_fid, 0, srch_inf);
2041 smb2_close_dir(const unsigned int xid, struct cifs_tcon *tcon,
2042 struct cifs_fid *fid)
2044 return SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
2048 * If we negotiate SMB2 protocol and get STATUS_PENDING - update
2049 * the number of credits and return true. Otherwise - return false.
2052 smb2_is_status_pending(char *buf, struct TCP_Server_Info *server)
2054 struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)buf;
2056 if (shdr->Status != STATUS_PENDING)
2059 if (shdr->CreditRequest) {
2060 spin_lock(&server->req_lock);
2061 server->credits += le16_to_cpu(shdr->CreditRequest);
2062 spin_unlock(&server->req_lock);
2063 wake_up(&server->request_q);
2070 smb2_is_session_expired(char *buf)
2072 struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)buf;
2074 if (shdr->Status != STATUS_NETWORK_SESSION_EXPIRED &&
2075 shdr->Status != STATUS_USER_SESSION_DELETED)
2078 trace_smb3_ses_expired(shdr->TreeId, shdr->SessionId,
2079 le16_to_cpu(shdr->Command),
2080 le64_to_cpu(shdr->MessageId));
2081 cifs_dbg(FYI, "Session expired or deleted\n");
2087 smb2_oplock_response(struct cifs_tcon *tcon, struct cifs_fid *fid,
2088 struct cifsInodeInfo *cinode)
2090 if (tcon->ses->server->capabilities & SMB2_GLOBAL_CAP_LEASING)
2091 return SMB2_lease_break(0, tcon, cinode->lease_key,
2092 smb2_get_lease_state(cinode));
2094 return SMB2_oplock_break(0, tcon, fid->persistent_fid,
2096 CIFS_CACHE_READ(cinode) ? 1 : 0);
2100 smb2_set_related(struct smb_rqst *rqst)
2102 struct smb2_sync_hdr *shdr;
2104 shdr = (struct smb2_sync_hdr *)(rqst->rq_iov[0].iov_base);
2106 cifs_dbg(FYI, "shdr NULL in smb2_set_related\n");
2109 shdr->Flags |= SMB2_FLAGS_RELATED_OPERATIONS;
2112 char smb2_padding[7] = {0, 0, 0, 0, 0, 0, 0};
2115 smb2_set_next_command(struct cifs_tcon *tcon, struct smb_rqst *rqst)
2117 struct smb2_sync_hdr *shdr;
2118 struct cifs_ses *ses = tcon->ses;
2119 struct TCP_Server_Info *server = ses->server;
2120 unsigned long len = smb_rqst_len(server, rqst);
2123 shdr = (struct smb2_sync_hdr *)(rqst->rq_iov[0].iov_base);
2125 cifs_dbg(FYI, "shdr NULL in smb2_set_next_command\n");
2129 /* SMB headers in a compound are 8 byte aligned. */
2131 /* No padding needed */
2135 num_padding = 8 - (len & 7);
2136 if (!smb3_encryption_required(tcon)) {
2138 * If we do not have encryption then we can just add an extra
2139 * iov for the padding.
2141 rqst->rq_iov[rqst->rq_nvec].iov_base = smb2_padding;
2142 rqst->rq_iov[rqst->rq_nvec].iov_len = num_padding;
2147 * We can not add a small padding iov for the encryption case
2148 * because the encryption framework can not handle the padding
2150 * We have to flatten this into a single buffer and add
2151 * the padding to it.
2153 for (i = 1; i < rqst->rq_nvec; i++) {
2154 memcpy(rqst->rq_iov[0].iov_base +
2155 rqst->rq_iov[0].iov_len,
2156 rqst->rq_iov[i].iov_base,
2157 rqst->rq_iov[i].iov_len);
2158 rqst->rq_iov[0].iov_len += rqst->rq_iov[i].iov_len;
2160 memset(rqst->rq_iov[0].iov_base + rqst->rq_iov[0].iov_len,
2162 rqst->rq_iov[0].iov_len += num_padding;
2168 shdr->NextCommand = cpu_to_le32(len);
2172 * Passes the query info response back to the caller on success.
2173 * Caller need to free this with free_rsp_buf().
2176 smb2_query_info_compound(const unsigned int xid, struct cifs_tcon *tcon,
2177 __le16 *utf16_path, u32 desired_access,
2178 u32 class, u32 type, u32 output_len,
2179 struct kvec *rsp, int *buftype,
2180 struct cifs_sb_info *cifs_sb)
2182 struct cifs_ses *ses = tcon->ses;
2184 struct smb_rqst rqst[3];
2185 int resp_buftype[3];
2186 struct kvec rsp_iov[3];
2187 struct kvec open_iov[SMB2_CREATE_IOV_SIZE];
2188 struct kvec qi_iov[1];
2189 struct kvec close_iov[1];
2190 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
2191 struct cifs_open_parms oparms;
2192 struct cifs_fid fid;
2195 if (smb3_encryption_required(tcon))
2196 flags |= CIFS_TRANSFORM_REQ;
2198 memset(rqst, 0, sizeof(rqst));
2199 resp_buftype[0] = resp_buftype[1] = resp_buftype[2] = CIFS_NO_BUFFER;
2200 memset(rsp_iov, 0, sizeof(rsp_iov));
2202 memset(&open_iov, 0, sizeof(open_iov));
2203 rqst[0].rq_iov = open_iov;
2204 rqst[0].rq_nvec = SMB2_CREATE_IOV_SIZE;
2207 oparms.desired_access = desired_access;
2208 oparms.disposition = FILE_OPEN;
2209 if (cifs_sb && backup_cred(cifs_sb))
2210 oparms.create_options = CREATE_OPEN_BACKUP_INTENT;
2212 oparms.create_options = 0;
2214 oparms.reconnect = false;
2216 rc = SMB2_open_init(tcon, &rqst[0], &oplock, &oparms, utf16_path);
2219 smb2_set_next_command(tcon, &rqst[0]);
2221 memset(&qi_iov, 0, sizeof(qi_iov));
2222 rqst[1].rq_iov = qi_iov;
2223 rqst[1].rq_nvec = 1;
2225 rc = SMB2_query_info_init(tcon, &rqst[1], COMPOUND_FID, COMPOUND_FID,
2231 smb2_set_next_command(tcon, &rqst[1]);
2232 smb2_set_related(&rqst[1]);
2234 memset(&close_iov, 0, sizeof(close_iov));
2235 rqst[2].rq_iov = close_iov;
2236 rqst[2].rq_nvec = 1;
2238 rc = SMB2_close_init(tcon, &rqst[2], COMPOUND_FID, COMPOUND_FID);
2241 smb2_set_related(&rqst[2]);
2243 rc = compound_send_recv(xid, ses, flags, 3, rqst,
2244 resp_buftype, rsp_iov);
2246 free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base);
2247 if (rc == -EREMCHG) {
2248 tcon->need_reconnect = true;
2249 printk_once(KERN_WARNING "server share %s deleted\n",
2255 *buftype = resp_buftype[1];
2258 SMB2_open_free(&rqst[0]);
2259 SMB2_query_info_free(&rqst[1]);
2260 SMB2_close_free(&rqst[2]);
2261 free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base);
2262 free_rsp_buf(resp_buftype[2], rsp_iov[2].iov_base);
2267 smb2_queryfs(const unsigned int xid, struct cifs_tcon *tcon,
2268 struct kstatfs *buf)
2270 struct smb2_query_info_rsp *rsp;
2271 struct smb2_fs_full_size_info *info = NULL;
2272 __le16 utf16_path = 0; /* Null - open root of share */
2273 struct kvec rsp_iov = {NULL, 0};
2274 int buftype = CIFS_NO_BUFFER;
2278 rc = smb2_query_info_compound(xid, tcon, &utf16_path,
2279 FILE_READ_ATTRIBUTES,
2280 FS_FULL_SIZE_INFORMATION,
2281 SMB2_O_INFO_FILESYSTEM,
2282 sizeof(struct smb2_fs_full_size_info),
2283 &rsp_iov, &buftype, NULL);
2287 rsp = (struct smb2_query_info_rsp *)rsp_iov.iov_base;
2288 buf->f_type = SMB2_MAGIC_NUMBER;
2289 info = (struct smb2_fs_full_size_info *)(
2290 le16_to_cpu(rsp->OutputBufferOffset) + (char *)rsp);
2291 rc = smb2_validate_iov(le16_to_cpu(rsp->OutputBufferOffset),
2292 le32_to_cpu(rsp->OutputBufferLength),
2294 sizeof(struct smb2_fs_full_size_info));
2296 smb2_copy_fs_info_to_kstatfs(info, buf);
2299 free_rsp_buf(buftype, rsp_iov.iov_base);
2304 smb311_queryfs(const unsigned int xid, struct cifs_tcon *tcon,
2305 struct kstatfs *buf)
2308 __le16 srch_path = 0; /* Null - open root of share */
2309 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
2310 struct cifs_open_parms oparms;
2311 struct cifs_fid fid;
2313 if (!tcon->posix_extensions)
2314 return smb2_queryfs(xid, tcon, buf);
2317 oparms.desired_access = FILE_READ_ATTRIBUTES;
2318 oparms.disposition = FILE_OPEN;
2319 oparms.create_options = 0;
2321 oparms.reconnect = false;
2323 rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL, NULL);
2327 rc = SMB311_posix_qfs_info(xid, tcon, fid.persistent_fid,
2328 fid.volatile_fid, buf);
2329 buf->f_type = SMB2_MAGIC_NUMBER;
2330 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
2335 smb2_compare_fids(struct cifsFileInfo *ob1, struct cifsFileInfo *ob2)
2337 return ob1->fid.persistent_fid == ob2->fid.persistent_fid &&
2338 ob1->fid.volatile_fid == ob2->fid.volatile_fid;
2342 smb2_mand_lock(const unsigned int xid, struct cifsFileInfo *cfile, __u64 offset,
2343 __u64 length, __u32 type, int lock, int unlock, bool wait)
2345 if (unlock && !lock)
2346 type = SMB2_LOCKFLAG_UNLOCK;
2347 return SMB2_lock(xid, tlink_tcon(cfile->tlink),
2348 cfile->fid.persistent_fid, cfile->fid.volatile_fid,
2349 current->tgid, length, offset, type, wait);
2353 smb2_get_lease_key(struct inode *inode, struct cifs_fid *fid)
2355 memcpy(fid->lease_key, CIFS_I(inode)->lease_key, SMB2_LEASE_KEY_SIZE);
2359 smb2_set_lease_key(struct inode *inode, struct cifs_fid *fid)
2361 memcpy(CIFS_I(inode)->lease_key, fid->lease_key, SMB2_LEASE_KEY_SIZE);
2365 smb2_new_lease_key(struct cifs_fid *fid)
2367 generate_random_uuid(fid->lease_key);
2371 smb2_get_dfs_refer(const unsigned int xid, struct cifs_ses *ses,
2372 const char *search_name,
2373 struct dfs_info3_param **target_nodes,
2374 unsigned int *num_of_nodes,
2375 const struct nls_table *nls_codepage, int remap)
2378 __le16 *utf16_path = NULL;
2379 int utf16_path_len = 0;
2380 struct cifs_tcon *tcon;
2381 struct fsctl_get_dfs_referral_req *dfs_req = NULL;
2382 struct get_dfs_referral_rsp *dfs_rsp = NULL;
2383 u32 dfs_req_size = 0, dfs_rsp_size = 0;
2385 cifs_dbg(FYI, "%s: path: %s\n", __func__, search_name);
2388 * Try to use the IPC tcon, otherwise just use any
2390 tcon = ses->tcon_ipc;
2392 spin_lock(&cifs_tcp_ses_lock);
2393 tcon = list_first_entry_or_null(&ses->tcon_list,
2398 spin_unlock(&cifs_tcp_ses_lock);
2402 cifs_dbg(VFS, "session %p has no tcon available for a dfs referral request\n",
2408 utf16_path = cifs_strndup_to_utf16(search_name, PATH_MAX,
2410 nls_codepage, remap);
2416 dfs_req_size = sizeof(*dfs_req) + utf16_path_len;
2417 dfs_req = kzalloc(dfs_req_size, GFP_KERNEL);
2423 /* Highest DFS referral version understood */
2424 dfs_req->MaxReferralLevel = DFS_VERSION;
2426 /* Path to resolve in an UTF-16 null-terminated string */
2427 memcpy(dfs_req->RequestFileName, utf16_path, utf16_path_len);
2430 rc = SMB2_ioctl(xid, tcon, NO_FILE_ID, NO_FILE_ID,
2431 FSCTL_DFS_GET_REFERRALS,
2432 true /* is_fsctl */,
2433 (char *)dfs_req, dfs_req_size, CIFSMaxBufSize,
2434 (char **)&dfs_rsp, &dfs_rsp_size);
2435 } while (rc == -EAGAIN);
2438 if ((rc != -ENOENT) && (rc != -EOPNOTSUPP))
2439 cifs_tcon_dbg(VFS, "ioctl error in %s rc=%d\n", __func__, rc);
2443 rc = parse_dfs_referrals(dfs_rsp, dfs_rsp_size,
2444 num_of_nodes, target_nodes,
2445 nls_codepage, remap, search_name,
2446 true /* is_unicode */);
2448 cifs_tcon_dbg(VFS, "parse error in %s rc=%d\n", __func__, rc);
2453 if (tcon && !tcon->ipc) {
2454 /* ipc tcons are not refcounted */
2455 spin_lock(&cifs_tcp_ses_lock);
2457 spin_unlock(&cifs_tcp_ses_lock);
2466 parse_reparse_posix(struct reparse_posix_data *symlink_buf,
2467 u32 plen, char **target_path,
2468 struct cifs_sb_info *cifs_sb)
2472 /* See MS-FSCC 2.1.2.6 for the 'NFS' style reparse tags */
2473 len = le16_to_cpu(symlink_buf->ReparseDataLength);
2475 if (le64_to_cpu(symlink_buf->InodeType) != NFS_SPECFILE_LNK) {
2476 cifs_dbg(VFS, "%lld not a supported symlink type\n",
2477 le64_to_cpu(symlink_buf->InodeType));
2481 *target_path = cifs_strndup_from_utf16(
2482 symlink_buf->PathBuffer,
2483 len, true, cifs_sb->local_nls);
2484 if (!(*target_path))
2487 convert_delimiter(*target_path, '/');
2488 cifs_dbg(FYI, "%s: target path: %s\n", __func__, *target_path);
2494 parse_reparse_symlink(struct reparse_symlink_data_buffer *symlink_buf,
2495 u32 plen, char **target_path,
2496 struct cifs_sb_info *cifs_sb)
2498 unsigned int sub_len;
2499 unsigned int sub_offset;
2501 /* We handle Symbolic Link reparse tag here. See: MS-FSCC 2.1.2.4 */
2503 sub_offset = le16_to_cpu(symlink_buf->SubstituteNameOffset);
2504 sub_len = le16_to_cpu(symlink_buf->SubstituteNameLength);
2505 if (sub_offset + 20 > plen ||
2506 sub_offset + sub_len + 20 > plen) {
2507 cifs_dbg(VFS, "srv returned malformed symlink buffer\n");
2511 *target_path = cifs_strndup_from_utf16(
2512 symlink_buf->PathBuffer + sub_offset,
2513 sub_len, true, cifs_sb->local_nls);
2514 if (!(*target_path))
2517 convert_delimiter(*target_path, '/');
2518 cifs_dbg(FYI, "%s: target path: %s\n", __func__, *target_path);
2524 parse_reparse_point(struct reparse_data_buffer *buf,
2525 u32 plen, char **target_path,
2526 struct cifs_sb_info *cifs_sb)
2528 if (plen < sizeof(struct reparse_data_buffer)) {
2529 cifs_dbg(VFS, "reparse buffer is too small. Must be "
2530 "at least 8 bytes but was %d\n", plen);
2534 if (plen < le16_to_cpu(buf->ReparseDataLength) +
2535 sizeof(struct reparse_data_buffer)) {
2536 cifs_dbg(VFS, "srv returned invalid reparse buf "
2537 "length: %d\n", plen);
2541 /* See MS-FSCC 2.1.2 */
2542 switch (le32_to_cpu(buf->ReparseTag)) {
2543 case IO_REPARSE_TAG_NFS:
2544 return parse_reparse_posix(
2545 (struct reparse_posix_data *)buf,
2546 plen, target_path, cifs_sb);
2547 case IO_REPARSE_TAG_SYMLINK:
2548 return parse_reparse_symlink(
2549 (struct reparse_symlink_data_buffer *)buf,
2550 plen, target_path, cifs_sb);
2552 cifs_dbg(VFS, "srv returned unknown symlink buffer "
2553 "tag:0x%08x\n", le32_to_cpu(buf->ReparseTag));
2558 #define SMB2_SYMLINK_STRUCT_SIZE \
2559 (sizeof(struct smb2_err_rsp) - 1 + sizeof(struct smb2_symlink_err_rsp))
2562 smb2_query_symlink(const unsigned int xid, struct cifs_tcon *tcon,
2563 struct cifs_sb_info *cifs_sb, const char *full_path,
2564 char **target_path, bool is_reparse_point)
2567 __le16 *utf16_path = NULL;
2568 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
2569 struct cifs_open_parms oparms;
2570 struct cifs_fid fid;
2571 struct kvec err_iov = {NULL, 0};
2572 struct smb2_err_rsp *err_buf = NULL;
2573 struct smb2_symlink_err_rsp *symlink;
2574 unsigned int sub_len;
2575 unsigned int sub_offset;
2576 unsigned int print_len;
2577 unsigned int print_offset;
2579 struct smb_rqst rqst[3];
2580 int resp_buftype[3];
2581 struct kvec rsp_iov[3];
2582 struct kvec open_iov[SMB2_CREATE_IOV_SIZE];
2583 struct kvec io_iov[SMB2_IOCTL_IOV_SIZE];
2584 struct kvec close_iov[1];
2585 struct smb2_create_rsp *create_rsp;
2586 struct smb2_ioctl_rsp *ioctl_rsp;
2587 struct reparse_data_buffer *reparse_buf;
2590 cifs_dbg(FYI, "%s: path: %s\n", __func__, full_path);
2592 *target_path = NULL;
2594 if (smb3_encryption_required(tcon))
2595 flags |= CIFS_TRANSFORM_REQ;
2597 memset(rqst, 0, sizeof(rqst));
2598 resp_buftype[0] = resp_buftype[1] = resp_buftype[2] = CIFS_NO_BUFFER;
2599 memset(rsp_iov, 0, sizeof(rsp_iov));
2601 utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb);
2606 memset(&open_iov, 0, sizeof(open_iov));
2607 rqst[0].rq_iov = open_iov;
2608 rqst[0].rq_nvec = SMB2_CREATE_IOV_SIZE;
2610 memset(&oparms, 0, sizeof(oparms));
2612 oparms.desired_access = FILE_READ_ATTRIBUTES;
2613 oparms.disposition = FILE_OPEN;
2615 if (backup_cred(cifs_sb))
2616 oparms.create_options = CREATE_OPEN_BACKUP_INTENT;
2618 oparms.create_options = 0;
2619 if (is_reparse_point)
2620 oparms.create_options = OPEN_REPARSE_POINT;
2623 oparms.reconnect = false;
2625 rc = SMB2_open_init(tcon, &rqst[0], &oplock, &oparms, utf16_path);
2628 smb2_set_next_command(tcon, &rqst[0]);
2632 memset(&io_iov, 0, sizeof(io_iov));
2633 rqst[1].rq_iov = io_iov;
2634 rqst[1].rq_nvec = SMB2_IOCTL_IOV_SIZE;
2636 rc = SMB2_ioctl_init(tcon, &rqst[1], fid.persistent_fid,
2637 fid.volatile_fid, FSCTL_GET_REPARSE_POINT,
2638 true /* is_fctl */, NULL, 0, CIFSMaxBufSize);
2642 smb2_set_next_command(tcon, &rqst[1]);
2643 smb2_set_related(&rqst[1]);
2647 memset(&close_iov, 0, sizeof(close_iov));
2648 rqst[2].rq_iov = close_iov;
2649 rqst[2].rq_nvec = 1;
2651 rc = SMB2_close_init(tcon, &rqst[2], COMPOUND_FID, COMPOUND_FID);
2655 smb2_set_related(&rqst[2]);
2657 rc = compound_send_recv(xid, tcon->ses, flags, 3, rqst,
2658 resp_buftype, rsp_iov);
2660 create_rsp = rsp_iov[0].iov_base;
2661 if (create_rsp && create_rsp->sync_hdr.Status)
2662 err_iov = rsp_iov[0];
2663 ioctl_rsp = rsp_iov[1].iov_base;
2666 * Open was successful and we got an ioctl response.
2668 if ((rc == 0) && (is_reparse_point)) {
2669 /* See MS-FSCC 2.3.23 */
2671 reparse_buf = (struct reparse_data_buffer *)
2672 ((char *)ioctl_rsp +
2673 le32_to_cpu(ioctl_rsp->OutputOffset));
2674 plen = le32_to_cpu(ioctl_rsp->OutputCount);
2676 if (plen + le32_to_cpu(ioctl_rsp->OutputOffset) >
2677 rsp_iov[1].iov_len) {
2678 cifs_tcon_dbg(VFS, "srv returned invalid ioctl len: %d\n",
2684 rc = parse_reparse_point(reparse_buf, plen, target_path,
2689 if (!rc || !err_iov.iov_base) {
2694 err_buf = err_iov.iov_base;
2695 if (le32_to_cpu(err_buf->ByteCount) < sizeof(struct smb2_symlink_err_rsp) ||
2696 err_iov.iov_len < SMB2_SYMLINK_STRUCT_SIZE) {
2701 symlink = (struct smb2_symlink_err_rsp *)err_buf->ErrorData;
2702 if (le32_to_cpu(symlink->SymLinkErrorTag) != SYMLINK_ERROR_TAG ||
2703 le32_to_cpu(symlink->ReparseTag) != IO_REPARSE_TAG_SYMLINK) {
2708 /* open must fail on symlink - reset rc */
2710 sub_len = le16_to_cpu(symlink->SubstituteNameLength);
2711 sub_offset = le16_to_cpu(symlink->SubstituteNameOffset);
2712 print_len = le16_to_cpu(symlink->PrintNameLength);
2713 print_offset = le16_to_cpu(symlink->PrintNameOffset);
2715 if (err_iov.iov_len < SMB2_SYMLINK_STRUCT_SIZE + sub_offset + sub_len) {
2720 if (err_iov.iov_len <
2721 SMB2_SYMLINK_STRUCT_SIZE + print_offset + print_len) {
2726 *target_path = cifs_strndup_from_utf16(
2727 (char *)symlink->PathBuffer + sub_offset,
2728 sub_len, true, cifs_sb->local_nls);
2729 if (!(*target_path)) {
2733 convert_delimiter(*target_path, '/');
2734 cifs_dbg(FYI, "%s: target path: %s\n", __func__, *target_path);
2737 cifs_dbg(FYI, "query symlink rc %d\n", rc);
2739 SMB2_open_free(&rqst[0]);
2740 SMB2_ioctl_free(&rqst[1]);
2741 SMB2_close_free(&rqst[2]);
2742 free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base);
2743 free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base);
2744 free_rsp_buf(resp_buftype[2], rsp_iov[2].iov_base);
2748 static struct cifs_ntsd *
2749 get_smb2_acl_by_fid(struct cifs_sb_info *cifs_sb,
2750 const struct cifs_fid *cifsfid, u32 *pacllen)
2752 struct cifs_ntsd *pntsd = NULL;
2754 int rc = -EOPNOTSUPP;
2755 struct tcon_link *tlink = cifs_sb_tlink(cifs_sb);
2758 return ERR_CAST(tlink);
2761 cifs_dbg(FYI, "trying to get acl\n");
2763 rc = SMB2_query_acl(xid, tlink_tcon(tlink), cifsfid->persistent_fid,
2764 cifsfid->volatile_fid, (void **)&pntsd, pacllen);
2767 cifs_put_tlink(tlink);
2769 cifs_dbg(FYI, "%s: rc = %d ACL len %d\n", __func__, rc, *pacllen);
2776 static struct cifs_ntsd *
2777 get_smb2_acl_by_path(struct cifs_sb_info *cifs_sb,
2778 const char *path, u32 *pacllen)
2780 struct cifs_ntsd *pntsd = NULL;
2781 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
2784 struct cifs_tcon *tcon;
2785 struct tcon_link *tlink = cifs_sb_tlink(cifs_sb);
2786 struct cifs_fid fid;
2787 struct cifs_open_parms oparms;
2790 cifs_dbg(FYI, "get smb3 acl for path %s\n", path);
2792 return ERR_CAST(tlink);
2794 tcon = tlink_tcon(tlink);
2797 if (backup_cred(cifs_sb))
2798 oparms.create_options = CREATE_OPEN_BACKUP_INTENT;
2800 oparms.create_options = 0;
2802 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
2810 oparms.desired_access = READ_CONTROL;
2811 oparms.disposition = FILE_OPEN;
2813 oparms.reconnect = false;
2815 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL, NULL);
2818 rc = SMB2_query_acl(xid, tlink_tcon(tlink), fid.persistent_fid,
2819 fid.volatile_fid, (void **)&pntsd, pacllen);
2820 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
2823 cifs_put_tlink(tlink);
2826 cifs_dbg(FYI, "%s: rc = %d ACL len %d\n", __func__, rc, *pacllen);
2833 set_smb2_acl(struct cifs_ntsd *pnntsd, __u32 acllen,
2834 struct inode *inode, const char *path, int aclflag)
2836 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
2838 int rc, access_flags = 0;
2839 struct cifs_tcon *tcon;
2840 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
2841 struct tcon_link *tlink = cifs_sb_tlink(cifs_sb);
2842 struct cifs_fid fid;
2843 struct cifs_open_parms oparms;
2846 cifs_dbg(FYI, "set smb3 acl for path %s\n", path);
2848 return PTR_ERR(tlink);
2850 tcon = tlink_tcon(tlink);
2853 if (backup_cred(cifs_sb))
2854 oparms.create_options = CREATE_OPEN_BACKUP_INTENT;
2856 oparms.create_options = 0;
2858 if (aclflag == CIFS_ACL_OWNER || aclflag == CIFS_ACL_GROUP)
2859 access_flags = WRITE_OWNER;
2861 access_flags = WRITE_DAC;
2863 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
2871 oparms.desired_access = access_flags;
2872 oparms.disposition = FILE_OPEN;
2875 oparms.reconnect = false;
2877 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL, NULL);
2880 rc = SMB2_set_acl(xid, tlink_tcon(tlink), fid.persistent_fid,
2881 fid.volatile_fid, pnntsd, acllen, aclflag);
2882 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
2885 cifs_put_tlink(tlink);
2890 /* Retrieve an ACL from the server */
2891 static struct cifs_ntsd *
2892 get_smb2_acl(struct cifs_sb_info *cifs_sb,
2893 struct inode *inode, const char *path,
2896 struct cifs_ntsd *pntsd = NULL;
2897 struct cifsFileInfo *open_file = NULL;
2900 open_file = find_readable_file(CIFS_I(inode), true);
2902 return get_smb2_acl_by_path(cifs_sb, path, pacllen);
2904 pntsd = get_smb2_acl_by_fid(cifs_sb, &open_file->fid, pacllen);
2905 cifsFileInfo_put(open_file);
2909 static long smb3_zero_range(struct file *file, struct cifs_tcon *tcon,
2910 loff_t offset, loff_t len, bool keep_size)
2912 struct cifs_ses *ses = tcon->ses;
2913 struct inode *inode;
2914 struct cifsInodeInfo *cifsi;
2915 struct cifsFileInfo *cfile = file->private_data;
2916 struct file_zero_data_information fsctl_buf;
2923 inode = d_inode(cfile->dentry);
2924 cifsi = CIFS_I(inode);
2926 trace_smb3_zero_enter(xid, cfile->fid.persistent_fid, tcon->tid,
2927 ses->Suid, offset, len);
2930 /* if file not oplocked can't be sure whether asking to extend size */
2931 if (!CIFS_CACHE_READ(cifsi))
2932 if (keep_size == false) {
2934 trace_smb3_zero_err(xid, cfile->fid.persistent_fid,
2935 tcon->tid, ses->Suid, offset, len, rc);
2940 cifs_dbg(FYI, "Offset %lld len %lld\n", offset, len);
2942 fsctl_buf.FileOffset = cpu_to_le64(offset);
2943 fsctl_buf.BeyondFinalZero = cpu_to_le64(offset + len);
2945 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
2946 cfile->fid.volatile_fid, FSCTL_SET_ZERO_DATA, true,
2948 sizeof(struct file_zero_data_information),
2951 goto zero_range_exit;
2954 * do we also need to change the size of the file?
2956 if (keep_size == false && i_size_read(inode) < offset + len) {
2957 eof = cpu_to_le64(offset + len);
2958 rc = SMB2_set_eof(xid, tcon, cfile->fid.persistent_fid,
2959 cfile->fid.volatile_fid, cfile->pid, &eof);
2965 trace_smb3_zero_err(xid, cfile->fid.persistent_fid, tcon->tid,
2966 ses->Suid, offset, len, rc);
2968 trace_smb3_zero_done(xid, cfile->fid.persistent_fid, tcon->tid,
2969 ses->Suid, offset, len);
2973 static long smb3_punch_hole(struct file *file, struct cifs_tcon *tcon,
2974 loff_t offset, loff_t len)
2976 struct inode *inode;
2977 struct cifsFileInfo *cfile = file->private_data;
2978 struct file_zero_data_information fsctl_buf;
2981 __u8 set_sparse = 1;
2985 inode = d_inode(cfile->dentry);
2987 /* Need to make file sparse, if not already, before freeing range. */
2988 /* Consider adding equivalent for compressed since it could also work */
2989 if (!smb2_set_sparse(xid, tcon, cfile, inode, set_sparse)) {
2995 cifs_dbg(FYI, "Offset %lld len %lld\n", offset, len);
2997 fsctl_buf.FileOffset = cpu_to_le64(offset);
2998 fsctl_buf.BeyondFinalZero = cpu_to_le64(offset + len);
3000 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
3001 cfile->fid.volatile_fid, FSCTL_SET_ZERO_DATA,
3002 true /* is_fctl */, (char *)&fsctl_buf,
3003 sizeof(struct file_zero_data_information),
3004 CIFSMaxBufSize, NULL, NULL);
3009 static long smb3_simple_falloc(struct file *file, struct cifs_tcon *tcon,
3010 loff_t off, loff_t len, bool keep_size)
3012 struct inode *inode;
3013 struct cifsInodeInfo *cifsi;
3014 struct cifsFileInfo *cfile = file->private_data;
3015 long rc = -EOPNOTSUPP;
3021 inode = d_inode(cfile->dentry);
3022 cifsi = CIFS_I(inode);
3024 trace_smb3_falloc_enter(xid, cfile->fid.persistent_fid, tcon->tid,
3025 tcon->ses->Suid, off, len);
3026 /* if file not oplocked can't be sure whether asking to extend size */
3027 if (!CIFS_CACHE_READ(cifsi))
3028 if (keep_size == false) {
3029 trace_smb3_falloc_err(xid, cfile->fid.persistent_fid,
3030 tcon->tid, tcon->ses->Suid, off, len, rc);
3036 * Files are non-sparse by default so falloc may be a no-op
3037 * Must check if file sparse. If not sparse, and not extending
3038 * then no need to do anything since file already allocated
3040 if ((cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) == 0) {
3041 if (keep_size == true)
3043 /* check if extending file */
3044 else if (i_size_read(inode) >= off + len)
3045 /* not extending file and already not sparse */
3047 /* BB: in future add else clause to extend file */
3051 trace_smb3_falloc_err(xid, cfile->fid.persistent_fid,
3052 tcon->tid, tcon->ses->Suid, off, len, rc);
3054 trace_smb3_falloc_done(xid, cfile->fid.persistent_fid,
3055 tcon->tid, tcon->ses->Suid, off, len);
3060 if ((keep_size == true) || (i_size_read(inode) >= off + len)) {
3062 * Check if falloc starts within first few pages of file
3063 * and ends within a few pages of the end of file to
3064 * ensure that most of file is being forced to be
3065 * fallocated now. If so then setting whole file sparse
3066 * ie potentially making a few extra pages at the beginning
3067 * or end of the file non-sparse via set_sparse is harmless.
3069 if ((off > 8192) || (off + len + 8192 < i_size_read(inode))) {
3071 trace_smb3_falloc_err(xid, cfile->fid.persistent_fid,
3072 tcon->tid, tcon->ses->Suid, off, len, rc);
3077 smb2_set_sparse(xid, tcon, cfile, inode, false);
3080 smb2_set_sparse(xid, tcon, cfile, inode, false);
3082 if (i_size_read(inode) < off + len) {
3083 eof = cpu_to_le64(off + len);
3084 rc = SMB2_set_eof(xid, tcon, cfile->fid.persistent_fid,
3085 cfile->fid.volatile_fid, cfile->pid,
3091 trace_smb3_falloc_err(xid, cfile->fid.persistent_fid, tcon->tid,
3092 tcon->ses->Suid, off, len, rc);
3094 trace_smb3_falloc_done(xid, cfile->fid.persistent_fid, tcon->tid,
3095 tcon->ses->Suid, off, len);
3101 static loff_t smb3_llseek(struct file *file, struct cifs_tcon *tcon, loff_t offset, int whence)
3103 struct cifsFileInfo *wrcfile, *cfile = file->private_data;
3104 struct cifsInodeInfo *cifsi;
3105 struct inode *inode;
3107 struct file_allocated_range_buffer in_data, *out_data = NULL;
3111 if (whence != SEEK_HOLE && whence != SEEK_DATA)
3112 return generic_file_llseek(file, offset, whence);
3114 inode = d_inode(cfile->dentry);
3115 cifsi = CIFS_I(inode);
3117 if (offset < 0 || offset >= i_size_read(inode))
3122 * We need to be sure that all dirty pages are written as they
3123 * might fill holes on the server.
3124 * Note that we also MUST flush any written pages since at least
3125 * some servers (Windows2016) will not reflect recent writes in
3126 * QUERY_ALLOCATED_RANGES until SMB2_flush is called.
3128 wrcfile = find_writable_file(cifsi, false);
3130 filemap_write_and_wait(inode->i_mapping);
3131 smb2_flush_file(xid, tcon, &wrcfile->fid);
3132 cifsFileInfo_put(wrcfile);
3135 if (!(cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE)) {
3136 if (whence == SEEK_HOLE)
3137 offset = i_size_read(inode);
3141 in_data.file_offset = cpu_to_le64(offset);
3142 in_data.length = cpu_to_le64(i_size_read(inode));
3144 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
3145 cfile->fid.volatile_fid,
3146 FSCTL_QUERY_ALLOCATED_RANGES, true,
3147 (char *)&in_data, sizeof(in_data),
3148 sizeof(struct file_allocated_range_buffer),
3149 (char **)&out_data, &out_data_len);
3155 if (whence == SEEK_HOLE && out_data_len == 0)
3158 if (whence == SEEK_DATA && out_data_len == 0) {
3163 if (out_data_len < sizeof(struct file_allocated_range_buffer)) {
3167 if (whence == SEEK_DATA) {
3168 offset = le64_to_cpu(out_data->file_offset);
3171 if (offset < le64_to_cpu(out_data->file_offset))
3174 offset = le64_to_cpu(out_data->file_offset) + le64_to_cpu(out_data->length);
3180 return vfs_setpos(file, offset, inode->i_sb->s_maxbytes);
3185 static int smb3_fiemap(struct cifs_tcon *tcon,
3186 struct cifsFileInfo *cfile,
3187 struct fiemap_extent_info *fei, u64 start, u64 len)
3190 struct file_allocated_range_buffer in_data, *out_data;
3192 int i, num, rc, flags, last_blob;
3195 if (fiemap_check_flags(fei, FIEMAP_FLAG_SYNC))
3200 in_data.file_offset = cpu_to_le64(start);
3201 in_data.length = cpu_to_le64(len);
3203 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
3204 cfile->fid.volatile_fid,
3205 FSCTL_QUERY_ALLOCATED_RANGES, true,
3206 (char *)&in_data, sizeof(in_data),
3207 1024 * sizeof(struct file_allocated_range_buffer),
3208 (char **)&out_data, &out_data_len);
3217 if (out_data_len < sizeof(struct file_allocated_range_buffer)) {
3221 if (out_data_len % sizeof(struct file_allocated_range_buffer)) {
3226 num = out_data_len / sizeof(struct file_allocated_range_buffer);
3227 for (i = 0; i < num; i++) {
3229 if (i == num - 1 && last_blob)
3230 flags |= FIEMAP_EXTENT_LAST;
3232 rc = fiemap_fill_next_extent(fei,
3233 le64_to_cpu(out_data[i].file_offset),
3234 le64_to_cpu(out_data[i].file_offset),
3235 le64_to_cpu(out_data[i].length),
3246 next = le64_to_cpu(out_data[num - 1].file_offset) +
3247 le64_to_cpu(out_data[num - 1].length);
3248 len = len - (next - start);
3259 static long smb3_fallocate(struct file *file, struct cifs_tcon *tcon, int mode,
3260 loff_t off, loff_t len)
3262 /* KEEP_SIZE already checked for by do_fallocate */
3263 if (mode & FALLOC_FL_PUNCH_HOLE)
3264 return smb3_punch_hole(file, tcon, off, len);
3265 else if (mode & FALLOC_FL_ZERO_RANGE) {
3266 if (mode & FALLOC_FL_KEEP_SIZE)
3267 return smb3_zero_range(file, tcon, off, len, true);
3268 return smb3_zero_range(file, tcon, off, len, false);
3269 } else if (mode == FALLOC_FL_KEEP_SIZE)
3270 return smb3_simple_falloc(file, tcon, off, len, true);
3272 return smb3_simple_falloc(file, tcon, off, len, false);
3278 smb2_downgrade_oplock(struct TCP_Server_Info *server,
3279 struct cifsInodeInfo *cinode, bool set_level2)
3282 server->ops->set_oplock_level(cinode, SMB2_OPLOCK_LEVEL_II,
3285 server->ops->set_oplock_level(cinode, 0, 0, NULL);
3289 smb21_downgrade_oplock(struct TCP_Server_Info *server,
3290 struct cifsInodeInfo *cinode, bool set_level2)
3292 server->ops->set_oplock_level(cinode,
3293 set_level2 ? SMB2_LEASE_READ_CACHING_HE :
3298 smb2_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
3299 unsigned int epoch, bool *purge_cache)
3302 if (oplock == SMB2_OPLOCK_LEVEL_NOCHANGE)
3304 if (oplock == SMB2_OPLOCK_LEVEL_BATCH) {
3305 cinode->oplock = CIFS_CACHE_RHW_FLG;
3306 cifs_dbg(FYI, "Batch Oplock granted on inode %p\n",
3307 &cinode->vfs_inode);
3308 } else if (oplock == SMB2_OPLOCK_LEVEL_EXCLUSIVE) {
3309 cinode->oplock = CIFS_CACHE_RW_FLG;
3310 cifs_dbg(FYI, "Exclusive Oplock granted on inode %p\n",
3311 &cinode->vfs_inode);
3312 } else if (oplock == SMB2_OPLOCK_LEVEL_II) {
3313 cinode->oplock = CIFS_CACHE_READ_FLG;
3314 cifs_dbg(FYI, "Level II Oplock granted on inode %p\n",
3315 &cinode->vfs_inode);
3321 smb21_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
3322 unsigned int epoch, bool *purge_cache)
3324 char message[5] = {0};
3325 unsigned int new_oplock = 0;
3328 if (oplock == SMB2_OPLOCK_LEVEL_NOCHANGE)
3331 if (oplock & SMB2_LEASE_READ_CACHING_HE) {
3332 new_oplock |= CIFS_CACHE_READ_FLG;
3333 strcat(message, "R");
3335 if (oplock & SMB2_LEASE_HANDLE_CACHING_HE) {
3336 new_oplock |= CIFS_CACHE_HANDLE_FLG;
3337 strcat(message, "H");
3339 if (oplock & SMB2_LEASE_WRITE_CACHING_HE) {
3340 new_oplock |= CIFS_CACHE_WRITE_FLG;
3341 strcat(message, "W");
3344 strncpy(message, "None", sizeof(message));
3346 cinode->oplock = new_oplock;
3347 cifs_dbg(FYI, "%s Lease granted on inode %p\n", message,
3348 &cinode->vfs_inode);
3352 smb3_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
3353 unsigned int epoch, bool *purge_cache)
3355 unsigned int old_oplock = cinode->oplock;
3357 smb21_set_oplock_level(cinode, oplock, epoch, purge_cache);
3360 *purge_cache = false;
3361 if (old_oplock == CIFS_CACHE_READ_FLG) {
3362 if (cinode->oplock == CIFS_CACHE_READ_FLG &&
3363 (epoch - cinode->epoch > 0))
3364 *purge_cache = true;
3365 else if (cinode->oplock == CIFS_CACHE_RH_FLG &&
3366 (epoch - cinode->epoch > 1))
3367 *purge_cache = true;
3368 else if (cinode->oplock == CIFS_CACHE_RHW_FLG &&
3369 (epoch - cinode->epoch > 1))
3370 *purge_cache = true;
3371 else if (cinode->oplock == 0 &&
3372 (epoch - cinode->epoch > 0))
3373 *purge_cache = true;
3374 } else if (old_oplock == CIFS_CACHE_RH_FLG) {
3375 if (cinode->oplock == CIFS_CACHE_RH_FLG &&
3376 (epoch - cinode->epoch > 0))
3377 *purge_cache = true;
3378 else if (cinode->oplock == CIFS_CACHE_RHW_FLG &&
3379 (epoch - cinode->epoch > 1))
3380 *purge_cache = true;
3382 cinode->epoch = epoch;
3387 smb2_is_read_op(__u32 oplock)
3389 return oplock == SMB2_OPLOCK_LEVEL_II;
3393 smb21_is_read_op(__u32 oplock)
3395 return (oplock & SMB2_LEASE_READ_CACHING_HE) &&
3396 !(oplock & SMB2_LEASE_WRITE_CACHING_HE);
3400 map_oplock_to_lease(u8 oplock)
3402 if (oplock == SMB2_OPLOCK_LEVEL_EXCLUSIVE)
3403 return SMB2_LEASE_WRITE_CACHING | SMB2_LEASE_READ_CACHING;
3404 else if (oplock == SMB2_OPLOCK_LEVEL_II)
3405 return SMB2_LEASE_READ_CACHING;
3406 else if (oplock == SMB2_OPLOCK_LEVEL_BATCH)
3407 return SMB2_LEASE_HANDLE_CACHING | SMB2_LEASE_READ_CACHING |
3408 SMB2_LEASE_WRITE_CACHING;
3413 smb2_create_lease_buf(u8 *lease_key, u8 oplock)
3415 struct create_lease *buf;
3417 buf = kzalloc(sizeof(struct create_lease), GFP_KERNEL);
3421 memcpy(&buf->lcontext.LeaseKey, lease_key, SMB2_LEASE_KEY_SIZE);
3422 buf->lcontext.LeaseState = map_oplock_to_lease(oplock);
3424 buf->ccontext.DataOffset = cpu_to_le16(offsetof
3425 (struct create_lease, lcontext));
3426 buf->ccontext.DataLength = cpu_to_le32(sizeof(struct lease_context));
3427 buf->ccontext.NameOffset = cpu_to_le16(offsetof
3428 (struct create_lease, Name));
3429 buf->ccontext.NameLength = cpu_to_le16(4);
3430 /* SMB2_CREATE_REQUEST_LEASE is "RqLs" */
3439 smb3_create_lease_buf(u8 *lease_key, u8 oplock)
3441 struct create_lease_v2 *buf;
3443 buf = kzalloc(sizeof(struct create_lease_v2), GFP_KERNEL);
3447 memcpy(&buf->lcontext.LeaseKey, lease_key, SMB2_LEASE_KEY_SIZE);
3448 buf->lcontext.LeaseState = map_oplock_to_lease(oplock);
3450 buf->ccontext.DataOffset = cpu_to_le16(offsetof
3451 (struct create_lease_v2, lcontext));
3452 buf->ccontext.DataLength = cpu_to_le32(sizeof(struct lease_context_v2));
3453 buf->ccontext.NameOffset = cpu_to_le16(offsetof
3454 (struct create_lease_v2, Name));
3455 buf->ccontext.NameLength = cpu_to_le16(4);
3456 /* SMB2_CREATE_REQUEST_LEASE is "RqLs" */
3465 smb2_parse_lease_buf(void *buf, unsigned int *epoch, char *lease_key)
3467 struct create_lease *lc = (struct create_lease *)buf;
3469 *epoch = 0; /* not used */
3470 if (lc->lcontext.LeaseFlags & SMB2_LEASE_FLAG_BREAK_IN_PROGRESS)
3471 return SMB2_OPLOCK_LEVEL_NOCHANGE;
3472 return le32_to_cpu(lc->lcontext.LeaseState);
3476 smb3_parse_lease_buf(void *buf, unsigned int *epoch, char *lease_key)
3478 struct create_lease_v2 *lc = (struct create_lease_v2 *)buf;
3480 *epoch = le16_to_cpu(lc->lcontext.Epoch);
3481 if (lc->lcontext.LeaseFlags & SMB2_LEASE_FLAG_BREAK_IN_PROGRESS)
3482 return SMB2_OPLOCK_LEVEL_NOCHANGE;
3484 memcpy(lease_key, &lc->lcontext.LeaseKey, SMB2_LEASE_KEY_SIZE);
3485 return le32_to_cpu(lc->lcontext.LeaseState);
3489 smb2_wp_retry_size(struct inode *inode)
3491 return min_t(unsigned int, CIFS_SB(inode->i_sb)->wsize,
3492 SMB2_MAX_BUFFER_SIZE);
3496 smb2_dir_needs_close(struct cifsFileInfo *cfile)
3498 return !cfile->invalidHandle;
3502 fill_transform_hdr(struct smb2_transform_hdr *tr_hdr, unsigned int orig_len,
3503 struct smb_rqst *old_rq, __le16 cipher_type)
3505 struct smb2_sync_hdr *shdr =
3506 (struct smb2_sync_hdr *)old_rq->rq_iov[0].iov_base;
3508 memset(tr_hdr, 0, sizeof(struct smb2_transform_hdr));
3509 tr_hdr->ProtocolId = SMB2_TRANSFORM_PROTO_NUM;
3510 tr_hdr->OriginalMessageSize = cpu_to_le32(orig_len);
3511 tr_hdr->Flags = cpu_to_le16(0x01);
3512 if (cipher_type == SMB2_ENCRYPTION_AES128_GCM)
3513 get_random_bytes(&tr_hdr->Nonce, SMB3_AES128GCM_NONCE);
3515 get_random_bytes(&tr_hdr->Nonce, SMB3_AES128CCM_NONCE);
3516 memcpy(&tr_hdr->SessionId, &shdr->SessionId, 8);
3519 /* We can not use the normal sg_set_buf() as we will sometimes pass a
3520 * stack object as buf.
3522 static inline void smb2_sg_set_buf(struct scatterlist *sg, const void *buf,
3523 unsigned int buflen)
3527 * VMAP_STACK (at least) puts stack into the vmalloc address space
3529 if (is_vmalloc_addr(buf))
3530 addr = vmalloc_to_page(buf);
3532 addr = virt_to_page(buf);
3533 sg_set_page(sg, addr, buflen, offset_in_page(buf));
3536 /* Assumes the first rqst has a transform header as the first iov.
3538 * rqst[0].rq_iov[0] is transform header
3539 * rqst[0].rq_iov[1+] data to be encrypted/decrypted
3540 * rqst[1+].rq_iov[0+] data to be encrypted/decrypted
3542 static struct scatterlist *
3543 init_sg(int num_rqst, struct smb_rqst *rqst, u8 *sign)
3545 unsigned int sg_len;
3546 struct scatterlist *sg;
3549 unsigned int idx = 0;
3553 for (i = 0; i < num_rqst; i++)
3554 sg_len += rqst[i].rq_nvec + rqst[i].rq_npages;
3556 sg = kmalloc_array(sg_len, sizeof(struct scatterlist), GFP_KERNEL);
3560 sg_init_table(sg, sg_len);
3561 for (i = 0; i < num_rqst; i++) {
3562 for (j = 0; j < rqst[i].rq_nvec; j++) {
3564 * The first rqst has a transform header where the
3565 * first 20 bytes are not part of the encrypted blob
3567 skip = (i == 0) && (j == 0) ? 20 : 0;
3568 smb2_sg_set_buf(&sg[idx++],
3569 rqst[i].rq_iov[j].iov_base + skip,
3570 rqst[i].rq_iov[j].iov_len - skip);
3573 for (j = 0; j < rqst[i].rq_npages; j++) {
3574 unsigned int len, offset;
3576 rqst_page_get_length(&rqst[i], j, &len, &offset);
3577 sg_set_page(&sg[idx++], rqst[i].rq_pages[j], len, offset);
3580 smb2_sg_set_buf(&sg[idx], sign, SMB2_SIGNATURE_SIZE);
3585 smb2_get_enc_key(struct TCP_Server_Info *server, __u64 ses_id, int enc, u8 *key)
3587 struct cifs_ses *ses;
3590 spin_lock(&cifs_tcp_ses_lock);
3591 list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) {
3592 if (ses->Suid != ses_id)
3594 ses_enc_key = enc ? ses->smb3encryptionkey :
3595 ses->smb3decryptionkey;
3596 memcpy(key, ses_enc_key, SMB3_SIGN_KEY_SIZE);
3597 spin_unlock(&cifs_tcp_ses_lock);
3600 spin_unlock(&cifs_tcp_ses_lock);
3605 * Encrypt or decrypt @rqst message. @rqst[0] has the following format:
3606 * iov[0] - transform header (associate data),
3607 * iov[1-N] - SMB2 header and pages - data to encrypt.
3608 * On success return encrypted data in iov[1-N] and pages, leave iov[0]
3612 crypt_message(struct TCP_Server_Info *server, int num_rqst,
3613 struct smb_rqst *rqst, int enc)
3615 struct smb2_transform_hdr *tr_hdr =
3616 (struct smb2_transform_hdr *)rqst[0].rq_iov[0].iov_base;
3617 unsigned int assoc_data_len = sizeof(struct smb2_transform_hdr) - 20;
3619 struct scatterlist *sg;
3620 u8 sign[SMB2_SIGNATURE_SIZE] = {};
3621 u8 key[SMB3_SIGN_KEY_SIZE];
3622 struct aead_request *req;
3624 unsigned int iv_len;
3625 DECLARE_CRYPTO_WAIT(wait);
3626 struct crypto_aead *tfm;
3627 unsigned int crypt_len = le32_to_cpu(tr_hdr->OriginalMessageSize);
3629 rc = smb2_get_enc_key(server, tr_hdr->SessionId, enc, key);
3631 cifs_server_dbg(VFS, "%s: Could not get %scryption key\n", __func__,
3636 rc = smb3_crypto_aead_allocate(server);
3638 cifs_server_dbg(VFS, "%s: crypto alloc failed\n", __func__);
3642 tfm = enc ? server->secmech.ccmaesencrypt :
3643 server->secmech.ccmaesdecrypt;
3644 rc = crypto_aead_setkey(tfm, key, SMB3_SIGN_KEY_SIZE);
3646 cifs_server_dbg(VFS, "%s: Failed to set aead key %d\n", __func__, rc);
3650 rc = crypto_aead_setauthsize(tfm, SMB2_SIGNATURE_SIZE);
3652 cifs_server_dbg(VFS, "%s: Failed to set authsize %d\n", __func__, rc);
3656 req = aead_request_alloc(tfm, GFP_KERNEL);
3658 cifs_server_dbg(VFS, "%s: Failed to alloc aead request\n", __func__);
3663 memcpy(sign, &tr_hdr->Signature, SMB2_SIGNATURE_SIZE);
3664 crypt_len += SMB2_SIGNATURE_SIZE;
3667 sg = init_sg(num_rqst, rqst, sign);
3669 cifs_server_dbg(VFS, "%s: Failed to init sg\n", __func__);
3674 iv_len = crypto_aead_ivsize(tfm);
3675 iv = kzalloc(iv_len, GFP_KERNEL);
3677 cifs_server_dbg(VFS, "%s: Failed to alloc iv\n", __func__);
3682 if (server->cipher_type == SMB2_ENCRYPTION_AES128_GCM)
3683 memcpy(iv, (char *)tr_hdr->Nonce, SMB3_AES128GCM_NONCE);
3686 memcpy(iv + 1, (char *)tr_hdr->Nonce, SMB3_AES128CCM_NONCE);
3689 aead_request_set_crypt(req, sg, sg, crypt_len, iv);
3690 aead_request_set_ad(req, assoc_data_len);
3692 aead_request_set_callback(req, CRYPTO_TFM_REQ_MAY_BACKLOG,
3693 crypto_req_done, &wait);
3695 rc = crypto_wait_req(enc ? crypto_aead_encrypt(req)
3696 : crypto_aead_decrypt(req), &wait);
3699 memcpy(&tr_hdr->Signature, sign, SMB2_SIGNATURE_SIZE);
3710 smb3_free_compound_rqst(int num_rqst, struct smb_rqst *rqst)
3714 for (i = 0; i < num_rqst; i++) {
3715 if (rqst[i].rq_pages) {
3716 for (j = rqst[i].rq_npages - 1; j >= 0; j--)
3717 put_page(rqst[i].rq_pages[j]);
3718 kfree(rqst[i].rq_pages);
3724 * This function will initialize new_rq and encrypt the content.
3725 * The first entry, new_rq[0], only contains a single iov which contains
3726 * a smb2_transform_hdr and is pre-allocated by the caller.
3727 * This function then populates new_rq[1+] with the content from olq_rq[0+].
3729 * The end result is an array of smb_rqst structures where the first structure
3730 * only contains a single iov for the transform header which we then can pass
3731 * to crypt_message().
3733 * new_rq[0].rq_iov[0] : smb2_transform_hdr pre-allocated by the caller
3734 * new_rq[1+].rq_iov[*] == old_rq[0+].rq_iov[*] : SMB2/3 requests
3737 smb3_init_transform_rq(struct TCP_Server_Info *server, int num_rqst,
3738 struct smb_rqst *new_rq, struct smb_rqst *old_rq)
3740 struct page **pages;
3741 struct smb2_transform_hdr *tr_hdr = new_rq[0].rq_iov[0].iov_base;
3742 unsigned int npages;
3743 unsigned int orig_len = 0;
3747 for (i = 1; i < num_rqst; i++) {
3748 npages = old_rq[i - 1].rq_npages;
3749 pages = kmalloc_array(npages, sizeof(struct page *),
3754 new_rq[i].rq_pages = pages;
3755 new_rq[i].rq_npages = npages;
3756 new_rq[i].rq_offset = old_rq[i - 1].rq_offset;
3757 new_rq[i].rq_pagesz = old_rq[i - 1].rq_pagesz;
3758 new_rq[i].rq_tailsz = old_rq[i - 1].rq_tailsz;
3759 new_rq[i].rq_iov = old_rq[i - 1].rq_iov;
3760 new_rq[i].rq_nvec = old_rq[i - 1].rq_nvec;
3762 orig_len += smb_rqst_len(server, &old_rq[i - 1]);
3764 for (j = 0; j < npages; j++) {
3765 pages[j] = alloc_page(GFP_KERNEL|__GFP_HIGHMEM);
3770 /* copy pages form the old */
3771 for (j = 0; j < npages; j++) {
3773 unsigned int offset, len;
3775 rqst_page_get_length(&new_rq[i], j, &len, &offset);
3777 dst = (char *) kmap(new_rq[i].rq_pages[j]) + offset;
3778 src = (char *) kmap(old_rq[i - 1].rq_pages[j]) + offset;
3780 memcpy(dst, src, len);
3781 kunmap(new_rq[i].rq_pages[j]);
3782 kunmap(old_rq[i - 1].rq_pages[j]);
3786 /* fill the 1st iov with a transform header */
3787 fill_transform_hdr(tr_hdr, orig_len, old_rq, server->cipher_type);
3789 rc = crypt_message(server, num_rqst, new_rq, 1);
3790 cifs_dbg(FYI, "Encrypt message returned %d\n", rc);
3797 smb3_free_compound_rqst(num_rqst - 1, &new_rq[1]);
3802 smb3_is_transform_hdr(void *buf)
3804 struct smb2_transform_hdr *trhdr = buf;
3806 return trhdr->ProtocolId == SMB2_TRANSFORM_PROTO_NUM;
3810 decrypt_raw_data(struct TCP_Server_Info *server, char *buf,
3811 unsigned int buf_data_size, struct page **pages,
3812 unsigned int npages, unsigned int page_data_size)
3815 struct smb_rqst rqst = {NULL};
3818 iov[0].iov_base = buf;
3819 iov[0].iov_len = sizeof(struct smb2_transform_hdr);
3820 iov[1].iov_base = buf + sizeof(struct smb2_transform_hdr);
3821 iov[1].iov_len = buf_data_size;
3825 rqst.rq_pages = pages;
3826 rqst.rq_npages = npages;
3827 rqst.rq_pagesz = PAGE_SIZE;
3828 rqst.rq_tailsz = (page_data_size % PAGE_SIZE) ? : PAGE_SIZE;
3830 rc = crypt_message(server, 1, &rqst, 0);
3831 cifs_dbg(FYI, "Decrypt message returned %d\n", rc);
3836 memmove(buf, iov[1].iov_base, buf_data_size);
3838 server->total_read = buf_data_size + page_data_size;
3844 read_data_into_pages(struct TCP_Server_Info *server, struct page **pages,
3845 unsigned int npages, unsigned int len)
3850 for (i = 0; i < npages; i++) {
3851 struct page *page = pages[i];
3855 if (len >= PAGE_SIZE) {
3856 /* enough data to fill the page */
3860 zero_user(page, len, PAGE_SIZE - len);
3863 length = cifs_read_page_from_socket(server, page, 0, n);
3866 server->total_read += length;
3873 init_read_bvec(struct page **pages, unsigned int npages, unsigned int data_size,
3874 unsigned int cur_off, struct bio_vec **page_vec)
3876 struct bio_vec *bvec;
3879 bvec = kcalloc(npages, sizeof(struct bio_vec), GFP_KERNEL);
3883 for (i = 0; i < npages; i++) {
3884 bvec[i].bv_page = pages[i];
3885 bvec[i].bv_offset = (i == 0) ? cur_off : 0;
3886 bvec[i].bv_len = min_t(unsigned int, PAGE_SIZE, data_size);
3887 data_size -= bvec[i].bv_len;
3890 if (data_size != 0) {
3891 cifs_dbg(VFS, "%s: something went wrong\n", __func__);
3901 handle_read_data(struct TCP_Server_Info *server, struct mid_q_entry *mid,
3902 char *buf, unsigned int buf_len, struct page **pages,
3903 unsigned int npages, unsigned int page_data_size)
3905 unsigned int data_offset;
3906 unsigned int data_len;
3907 unsigned int cur_off;
3908 unsigned int cur_page_idx;
3909 unsigned int pad_len;
3910 struct cifs_readdata *rdata = mid->callback_data;
3911 struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)buf;
3912 struct bio_vec *bvec = NULL;
3913 struct iov_iter iter;
3916 bool use_rdma_mr = false;
3918 if (shdr->Command != SMB2_READ) {
3919 cifs_server_dbg(VFS, "only big read responses are supported\n");
3923 if (server->ops->is_session_expired &&
3924 server->ops->is_session_expired(buf)) {
3925 cifs_reconnect(server);
3926 wake_up(&server->response_q);
3930 if (server->ops->is_status_pending &&
3931 server->ops->is_status_pending(buf, server))
3934 /* set up first two iov to get credits */
3935 rdata->iov[0].iov_base = buf;
3936 rdata->iov[0].iov_len = 0;
3937 rdata->iov[1].iov_base = buf;
3938 rdata->iov[1].iov_len =
3939 min_t(unsigned int, buf_len, server->vals->read_rsp_size);
3940 cifs_dbg(FYI, "0: iov_base=%p iov_len=%zu\n",
3941 rdata->iov[0].iov_base, rdata->iov[0].iov_len);
3942 cifs_dbg(FYI, "1: iov_base=%p iov_len=%zu\n",
3943 rdata->iov[1].iov_base, rdata->iov[1].iov_len);
3945 rdata->result = server->ops->map_error(buf, true);
3946 if (rdata->result != 0) {
3947 cifs_dbg(FYI, "%s: server returned error %d\n",
3948 __func__, rdata->result);
3949 /* normal error on read response */
3950 dequeue_mid(mid, false);
3954 data_offset = server->ops->read_data_offset(buf);
3955 #ifdef CONFIG_CIFS_SMB_DIRECT
3956 use_rdma_mr = rdata->mr;
3958 data_len = server->ops->read_data_length(buf, use_rdma_mr);
3960 if (data_offset < server->vals->read_rsp_size) {
3962 * win2k8 sometimes sends an offset of 0 when the read
3963 * is beyond the EOF. Treat it as if the data starts just after
3966 cifs_dbg(FYI, "%s: data offset (%u) inside read response header\n",
3967 __func__, data_offset);
3968 data_offset = server->vals->read_rsp_size;
3969 } else if (data_offset > MAX_CIFS_SMALL_BUFFER_SIZE) {
3970 /* data_offset is beyond the end of smallbuf */
3971 cifs_dbg(FYI, "%s: data offset (%u) beyond end of smallbuf\n",
3972 __func__, data_offset);
3973 rdata->result = -EIO;
3974 dequeue_mid(mid, rdata->result);
3978 pad_len = data_offset - server->vals->read_rsp_size;
3980 if (buf_len <= data_offset) {
3981 /* read response payload is in pages */
3982 cur_page_idx = pad_len / PAGE_SIZE;
3983 cur_off = pad_len % PAGE_SIZE;
3985 if (cur_page_idx != 0) {
3986 /* data offset is beyond the 1st page of response */
3987 cifs_dbg(FYI, "%s: data offset (%u) beyond 1st page of response\n",
3988 __func__, data_offset);
3989 rdata->result = -EIO;
3990 dequeue_mid(mid, rdata->result);
3994 if (data_len > page_data_size - pad_len) {
3995 /* data_len is corrupt -- discard frame */
3996 rdata->result = -EIO;
3997 dequeue_mid(mid, rdata->result);
4001 rdata->result = init_read_bvec(pages, npages, page_data_size,
4003 if (rdata->result != 0) {
4004 dequeue_mid(mid, rdata->result);
4008 iov_iter_bvec(&iter, WRITE, bvec, npages, data_len);
4009 } else if (buf_len >= data_offset + data_len) {
4010 /* read response payload is in buf */
4011 WARN_ONCE(npages > 0, "read data can be either in buf or in pages");
4012 iov.iov_base = buf + data_offset;
4013 iov.iov_len = data_len;
4014 iov_iter_kvec(&iter, WRITE, &iov, 1, data_len);
4016 /* read response payload cannot be in both buf and pages */
4017 WARN_ONCE(1, "buf can not contain only a part of read data");
4018 rdata->result = -EIO;
4019 dequeue_mid(mid, rdata->result);
4023 length = rdata->copy_into_pages(server, rdata, &iter);
4030 dequeue_mid(mid, false);
4034 struct smb2_decrypt_work {
4035 struct work_struct decrypt;
4036 struct TCP_Server_Info *server;
4037 struct page **ppages;
4039 unsigned int npages;
4044 static void smb2_decrypt_offload(struct work_struct *work)
4046 struct smb2_decrypt_work *dw = container_of(work,
4047 struct smb2_decrypt_work, decrypt);
4049 struct mid_q_entry *mid;
4051 rc = decrypt_raw_data(dw->server, dw->buf, dw->server->vals->read_rsp_size,
4052 dw->ppages, dw->npages, dw->len);
4054 cifs_dbg(VFS, "error decrypting rc=%d\n", rc);
4058 dw->server->lstrp = jiffies;
4059 mid = smb2_find_mid(dw->server, dw->buf);
4061 cifs_dbg(FYI, "mid not found\n");
4063 mid->decrypted = true;
4064 rc = handle_read_data(dw->server, mid, dw->buf,
4065 dw->server->vals->read_rsp_size,
4066 dw->ppages, dw->npages, dw->len);
4068 cifs_mid_q_entry_release(mid);
4072 for (i = dw->npages-1; i >= 0; i--)
4073 put_page(dw->ppages[i]);
4076 cifs_small_buf_release(dw->buf);
4081 receive_encrypted_read(struct TCP_Server_Info *server, struct mid_q_entry **mid,
4084 char *buf = server->smallbuf;
4085 struct smb2_transform_hdr *tr_hdr = (struct smb2_transform_hdr *)buf;
4086 unsigned int npages;
4087 struct page **pages;
4089 unsigned int buflen = server->pdu_size;
4092 struct smb2_decrypt_work *dw;
4095 len = min_t(unsigned int, buflen, server->vals->read_rsp_size +
4096 sizeof(struct smb2_transform_hdr)) - HEADER_SIZE(server) + 1;
4098 rc = cifs_read_from_socket(server, buf + HEADER_SIZE(server) - 1, len);
4101 server->total_read += rc;
4103 len = le32_to_cpu(tr_hdr->OriginalMessageSize) -
4104 server->vals->read_rsp_size;
4105 npages = DIV_ROUND_UP(len, PAGE_SIZE);
4107 pages = kmalloc_array(npages, sizeof(struct page *), GFP_KERNEL);
4113 for (; i < npages; i++) {
4114 pages[i] = alloc_page(GFP_KERNEL|__GFP_HIGHMEM);
4121 /* read read data into pages */
4122 rc = read_data_into_pages(server, pages, npages, len);
4126 rc = cifs_discard_remaining_data(server);
4131 * For large reads, offload to different thread for better performance,
4132 * use more cores decrypting which can be expensive
4135 if ((server->min_offload) && (server->in_flight > 1) &&
4136 (server->pdu_size >= server->min_offload)) {
4137 dw = kmalloc(sizeof(struct smb2_decrypt_work), GFP_KERNEL);
4139 goto non_offloaded_decrypt;
4141 dw->buf = server->smallbuf;
4142 server->smallbuf = (char *)cifs_small_buf_get();
4144 INIT_WORK(&dw->decrypt, smb2_decrypt_offload);
4146 dw->npages = npages;
4147 dw->server = server;
4150 queue_work(cifsiod_wq, &dw->decrypt);
4151 *num_mids = 0; /* worker thread takes care of finding mid */
4155 non_offloaded_decrypt:
4156 rc = decrypt_raw_data(server, buf, server->vals->read_rsp_size,
4157 pages, npages, len);
4161 *mid = smb2_find_mid(server, buf);
4163 cifs_dbg(FYI, "mid not found\n");
4165 cifs_dbg(FYI, "mid found\n");
4166 (*mid)->decrypted = true;
4167 rc = handle_read_data(server, *mid, buf,
4168 server->vals->read_rsp_size,
4169 pages, npages, len);
4173 for (i = i - 1; i >= 0; i--)
4178 cifs_discard_remaining_data(server);
4183 receive_encrypted_standard(struct TCP_Server_Info *server,
4184 struct mid_q_entry **mids, char **bufs,
4188 char *buf = server->smallbuf;
4189 struct smb2_sync_hdr *shdr;
4190 unsigned int pdu_length = server->pdu_size;
4191 unsigned int buf_size;
4192 struct mid_q_entry *mid_entry;
4194 char *next_buffer = NULL;
4198 /* switch to large buffer if too big for a small one */
4199 if (pdu_length > MAX_CIFS_SMALL_BUFFER_SIZE) {
4200 server->large_buf = true;
4201 memcpy(server->bigbuf, buf, server->total_read);
4202 buf = server->bigbuf;
4205 /* now read the rest */
4206 length = cifs_read_from_socket(server, buf + HEADER_SIZE(server) - 1,
4207 pdu_length - HEADER_SIZE(server) + 1);
4210 server->total_read += length;
4212 buf_size = pdu_length - sizeof(struct smb2_transform_hdr);
4213 length = decrypt_raw_data(server, buf, buf_size, NULL, 0, 0);
4217 next_is_large = server->large_buf;
4219 shdr = (struct smb2_sync_hdr *)buf;
4220 if (shdr->NextCommand) {
4222 next_buffer = (char *)cifs_buf_get();
4224 next_buffer = (char *)cifs_small_buf_get();
4226 buf + le32_to_cpu(shdr->NextCommand),
4227 pdu_length - le32_to_cpu(shdr->NextCommand));
4230 mid_entry = smb2_find_mid(server, buf);
4231 if (mid_entry == NULL)
4232 cifs_dbg(FYI, "mid not found\n");
4234 cifs_dbg(FYI, "mid found\n");
4235 mid_entry->decrypted = true;
4236 mid_entry->resp_buf_size = server->pdu_size;
4239 if (*num_mids >= MAX_COMPOUND) {
4240 cifs_server_dbg(VFS, "too many PDUs in compound\n");
4243 bufs[*num_mids] = buf;
4244 mids[(*num_mids)++] = mid_entry;
4246 if (mid_entry && mid_entry->handle)
4247 ret = mid_entry->handle(server, mid_entry);
4249 ret = cifs_handle_standard(server, mid_entry);
4251 if (ret == 0 && shdr->NextCommand) {
4252 pdu_length -= le32_to_cpu(shdr->NextCommand);
4253 server->large_buf = next_is_large;
4255 server->bigbuf = buf = next_buffer;
4257 server->smallbuf = buf = next_buffer;
4259 } else if (ret != 0) {
4261 * ret != 0 here means that we didn't get to handle_mid() thus
4262 * server->smallbuf and server->bigbuf are still valid. We need
4263 * to free next_buffer because it is not going to be used
4267 free_rsp_buf(CIFS_LARGE_BUFFER, next_buffer);
4269 free_rsp_buf(CIFS_SMALL_BUFFER, next_buffer);
4276 smb3_receive_transform(struct TCP_Server_Info *server,
4277 struct mid_q_entry **mids, char **bufs, int *num_mids)
4279 char *buf = server->smallbuf;
4280 unsigned int pdu_length = server->pdu_size;
4281 struct smb2_transform_hdr *tr_hdr = (struct smb2_transform_hdr *)buf;
4282 unsigned int orig_len = le32_to_cpu(tr_hdr->OriginalMessageSize);
4284 if (pdu_length < sizeof(struct smb2_transform_hdr) +
4285 sizeof(struct smb2_sync_hdr)) {
4286 cifs_server_dbg(VFS, "Transform message is too small (%u)\n",
4288 cifs_reconnect(server);
4289 wake_up(&server->response_q);
4290 return -ECONNABORTED;
4293 if (pdu_length < orig_len + sizeof(struct smb2_transform_hdr)) {
4294 cifs_server_dbg(VFS, "Transform message is broken\n");
4295 cifs_reconnect(server);
4296 wake_up(&server->response_q);
4297 return -ECONNABORTED;
4300 /* TODO: add support for compounds containing READ. */
4301 if (pdu_length > CIFSMaxBufSize + MAX_HEADER_SIZE(server)) {
4302 return receive_encrypted_read(server, &mids[0], num_mids);
4305 return receive_encrypted_standard(server, mids, bufs, num_mids);
4309 smb3_handle_read_data(struct TCP_Server_Info *server, struct mid_q_entry *mid)
4311 char *buf = server->large_buf ? server->bigbuf : server->smallbuf;
4313 return handle_read_data(server, mid, buf, server->pdu_size,
4318 smb2_next_header(char *buf)
4320 struct smb2_sync_hdr *hdr = (struct smb2_sync_hdr *)buf;
4321 struct smb2_transform_hdr *t_hdr = (struct smb2_transform_hdr *)buf;
4323 if (hdr->ProtocolId == SMB2_TRANSFORM_PROTO_NUM)
4324 return sizeof(struct smb2_transform_hdr) +
4325 le32_to_cpu(t_hdr->OriginalMessageSize);
4327 return le32_to_cpu(hdr->NextCommand);
4331 smb2_make_node(unsigned int xid, struct inode *inode,
4332 struct dentry *dentry, struct cifs_tcon *tcon,
4333 char *full_path, umode_t mode, dev_t dev)
4335 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
4337 int create_options = CREATE_NOT_DIR | CREATE_OPTION_SPECIAL;
4338 FILE_ALL_INFO *buf = NULL;
4339 struct cifs_io_parms io_parms;
4341 struct cifs_fid fid;
4342 struct cifs_open_parms oparms;
4343 unsigned int bytes_written;
4344 struct win_dev *pdev;
4348 * Check if mounted with mount parm 'sfu' mount parm.
4349 * SFU emulation should work with all servers, but only
4350 * supports block and char device (no socket & fifo),
4351 * and was used by default in earlier versions of Windows
4353 if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL))
4357 * TODO: Add ability to create instead via reparse point. Windows (e.g.
4358 * their current NFS server) uses this approach to expose special files
4359 * over SMB2/SMB3 and Samba will do this with SMB3.1.1 POSIX Extensions
4362 if (!S_ISCHR(mode) && !S_ISBLK(mode))
4365 cifs_dbg(FYI, "sfu compat create special file\n");
4367 buf = kmalloc(sizeof(FILE_ALL_INFO), GFP_KERNEL);
4373 if (backup_cred(cifs_sb))
4374 create_options |= CREATE_OPEN_BACKUP_INTENT;
4377 oparms.cifs_sb = cifs_sb;
4378 oparms.desired_access = GENERIC_WRITE;
4379 oparms.create_options = create_options;
4380 oparms.disposition = FILE_CREATE;
4381 oparms.path = full_path;
4383 oparms.reconnect = false;
4385 if (tcon->ses->server->oplocks)
4386 oplock = REQ_OPLOCK;
4389 rc = tcon->ses->server->ops->open(xid, &oparms, &oplock, buf);
4394 * BB Do not bother to decode buf since no local inode yet to put
4395 * timestamps in, but we can reuse it safely.
4398 pdev = (struct win_dev *)buf;
4399 io_parms.pid = current->tgid;
4400 io_parms.tcon = tcon;
4401 io_parms.offset = 0;
4402 io_parms.length = sizeof(struct win_dev);
4403 iov[1].iov_base = buf;
4404 iov[1].iov_len = sizeof(struct win_dev);
4405 if (S_ISCHR(mode)) {
4406 memcpy(pdev->type, "IntxCHR", 8);
4407 pdev->major = cpu_to_le64(MAJOR(dev));
4408 pdev->minor = cpu_to_le64(MINOR(dev));
4409 rc = tcon->ses->server->ops->sync_write(xid, &fid, &io_parms,
4410 &bytes_written, iov, 1);
4411 } else if (S_ISBLK(mode)) {
4412 memcpy(pdev->type, "IntxBLK", 8);
4413 pdev->major = cpu_to_le64(MAJOR(dev));
4414 pdev->minor = cpu_to_le64(MINOR(dev));
4415 rc = tcon->ses->server->ops->sync_write(xid, &fid, &io_parms,
4416 &bytes_written, iov, 1);
4418 tcon->ses->server->ops->close(xid, tcon, &fid);
4421 /* FIXME: add code here to set EAs */
4428 struct smb_version_operations smb20_operations = {
4429 .compare_fids = smb2_compare_fids,
4430 .setup_request = smb2_setup_request,
4431 .setup_async_request = smb2_setup_async_request,
4432 .check_receive = smb2_check_receive,
4433 .add_credits = smb2_add_credits,
4434 .set_credits = smb2_set_credits,
4435 .get_credits_field = smb2_get_credits_field,
4436 .get_credits = smb2_get_credits,
4437 .wait_mtu_credits = cifs_wait_mtu_credits,
4438 .get_next_mid = smb2_get_next_mid,
4439 .revert_current_mid = smb2_revert_current_mid,
4440 .read_data_offset = smb2_read_data_offset,
4441 .read_data_length = smb2_read_data_length,
4442 .map_error = map_smb2_to_linux_error,
4443 .find_mid = smb2_find_mid,
4444 .check_message = smb2_check_message,
4445 .dump_detail = smb2_dump_detail,
4446 .clear_stats = smb2_clear_stats,
4447 .print_stats = smb2_print_stats,
4448 .is_oplock_break = smb2_is_valid_oplock_break,
4449 .handle_cancelled_mid = smb2_handle_cancelled_mid,
4450 .downgrade_oplock = smb2_downgrade_oplock,
4451 .need_neg = smb2_need_neg,
4452 .negotiate = smb2_negotiate,
4453 .negotiate_wsize = smb2_negotiate_wsize,
4454 .negotiate_rsize = smb2_negotiate_rsize,
4455 .sess_setup = SMB2_sess_setup,
4456 .logoff = SMB2_logoff,
4457 .tree_connect = SMB2_tcon,
4458 .tree_disconnect = SMB2_tdis,
4459 .qfs_tcon = smb2_qfs_tcon,
4460 .is_path_accessible = smb2_is_path_accessible,
4461 .can_echo = smb2_can_echo,
4463 .query_path_info = smb2_query_path_info,
4464 .get_srv_inum = smb2_get_srv_inum,
4465 .query_file_info = smb2_query_file_info,
4466 .set_path_size = smb2_set_path_size,
4467 .set_file_size = smb2_set_file_size,
4468 .set_file_info = smb2_set_file_info,
4469 .set_compression = smb2_set_compression,
4470 .mkdir = smb2_mkdir,
4471 .mkdir_setinfo = smb2_mkdir_setinfo,
4472 .rmdir = smb2_rmdir,
4473 .unlink = smb2_unlink,
4474 .rename = smb2_rename_path,
4475 .create_hardlink = smb2_create_hardlink,
4476 .query_symlink = smb2_query_symlink,
4477 .query_mf_symlink = smb3_query_mf_symlink,
4478 .create_mf_symlink = smb3_create_mf_symlink,
4479 .open = smb2_open_file,
4480 .set_fid = smb2_set_fid,
4481 .close = smb2_close_file,
4482 .flush = smb2_flush_file,
4483 .async_readv = smb2_async_readv,
4484 .async_writev = smb2_async_writev,
4485 .sync_read = smb2_sync_read,
4486 .sync_write = smb2_sync_write,
4487 .query_dir_first = smb2_query_dir_first,
4488 .query_dir_next = smb2_query_dir_next,
4489 .close_dir = smb2_close_dir,
4490 .calc_smb_size = smb2_calc_size,
4491 .is_status_pending = smb2_is_status_pending,
4492 .is_session_expired = smb2_is_session_expired,
4493 .oplock_response = smb2_oplock_response,
4494 .queryfs = smb2_queryfs,
4495 .mand_lock = smb2_mand_lock,
4496 .mand_unlock_range = smb2_unlock_range,
4497 .push_mand_locks = smb2_push_mandatory_locks,
4498 .get_lease_key = smb2_get_lease_key,
4499 .set_lease_key = smb2_set_lease_key,
4500 .new_lease_key = smb2_new_lease_key,
4501 .calc_signature = smb2_calc_signature,
4502 .is_read_op = smb2_is_read_op,
4503 .set_oplock_level = smb2_set_oplock_level,
4504 .create_lease_buf = smb2_create_lease_buf,
4505 .parse_lease_buf = smb2_parse_lease_buf,
4506 .copychunk_range = smb2_copychunk_range,
4507 .wp_retry_size = smb2_wp_retry_size,
4508 .dir_needs_close = smb2_dir_needs_close,
4509 .get_dfs_refer = smb2_get_dfs_refer,
4510 .select_sectype = smb2_select_sectype,
4511 #ifdef CONFIG_CIFS_XATTR
4512 .query_all_EAs = smb2_query_eas,
4513 .set_EA = smb2_set_ea,
4514 #endif /* CIFS_XATTR */
4515 .get_acl = get_smb2_acl,
4516 .get_acl_by_fid = get_smb2_acl_by_fid,
4517 .set_acl = set_smb2_acl,
4518 .next_header = smb2_next_header,
4519 .ioctl_query_info = smb2_ioctl_query_info,
4520 .make_node = smb2_make_node,
4521 .fiemap = smb3_fiemap,
4522 .llseek = smb3_llseek,
4525 struct smb_version_operations smb21_operations = {
4526 .compare_fids = smb2_compare_fids,
4527 .setup_request = smb2_setup_request,
4528 .setup_async_request = smb2_setup_async_request,
4529 .check_receive = smb2_check_receive,
4530 .add_credits = smb2_add_credits,
4531 .set_credits = smb2_set_credits,
4532 .get_credits_field = smb2_get_credits_field,
4533 .get_credits = smb2_get_credits,
4534 .wait_mtu_credits = smb2_wait_mtu_credits,
4535 .adjust_credits = smb2_adjust_credits,
4536 .get_next_mid = smb2_get_next_mid,
4537 .revert_current_mid = smb2_revert_current_mid,
4538 .read_data_offset = smb2_read_data_offset,
4539 .read_data_length = smb2_read_data_length,
4540 .map_error = map_smb2_to_linux_error,
4541 .find_mid = smb2_find_mid,
4542 .check_message = smb2_check_message,
4543 .dump_detail = smb2_dump_detail,
4544 .clear_stats = smb2_clear_stats,
4545 .print_stats = smb2_print_stats,
4546 .is_oplock_break = smb2_is_valid_oplock_break,
4547 .handle_cancelled_mid = smb2_handle_cancelled_mid,
4548 .downgrade_oplock = smb21_downgrade_oplock,
4549 .need_neg = smb2_need_neg,
4550 .negotiate = smb2_negotiate,
4551 .negotiate_wsize = smb2_negotiate_wsize,
4552 .negotiate_rsize = smb2_negotiate_rsize,
4553 .sess_setup = SMB2_sess_setup,
4554 .logoff = SMB2_logoff,
4555 .tree_connect = SMB2_tcon,
4556 .tree_disconnect = SMB2_tdis,
4557 .qfs_tcon = smb2_qfs_tcon,
4558 .is_path_accessible = smb2_is_path_accessible,
4559 .can_echo = smb2_can_echo,
4561 .query_path_info = smb2_query_path_info,
4562 .get_srv_inum = smb2_get_srv_inum,
4563 .query_file_info = smb2_query_file_info,
4564 .set_path_size = smb2_set_path_size,
4565 .set_file_size = smb2_set_file_size,
4566 .set_file_info = smb2_set_file_info,
4567 .set_compression = smb2_set_compression,
4568 .mkdir = smb2_mkdir,
4569 .mkdir_setinfo = smb2_mkdir_setinfo,
4570 .rmdir = smb2_rmdir,
4571 .unlink = smb2_unlink,
4572 .rename = smb2_rename_path,
4573 .create_hardlink = smb2_create_hardlink,
4574 .query_symlink = smb2_query_symlink,
4575 .query_mf_symlink = smb3_query_mf_symlink,
4576 .create_mf_symlink = smb3_create_mf_symlink,
4577 .open = smb2_open_file,
4578 .set_fid = smb2_set_fid,
4579 .close = smb2_close_file,
4580 .flush = smb2_flush_file,
4581 .async_readv = smb2_async_readv,
4582 .async_writev = smb2_async_writev,
4583 .sync_read = smb2_sync_read,
4584 .sync_write = smb2_sync_write,
4585 .query_dir_first = smb2_query_dir_first,
4586 .query_dir_next = smb2_query_dir_next,
4587 .close_dir = smb2_close_dir,
4588 .calc_smb_size = smb2_calc_size,
4589 .is_status_pending = smb2_is_status_pending,
4590 .is_session_expired = smb2_is_session_expired,
4591 .oplock_response = smb2_oplock_response,
4592 .queryfs = smb2_queryfs,
4593 .mand_lock = smb2_mand_lock,
4594 .mand_unlock_range = smb2_unlock_range,
4595 .push_mand_locks = smb2_push_mandatory_locks,
4596 .get_lease_key = smb2_get_lease_key,
4597 .set_lease_key = smb2_set_lease_key,
4598 .new_lease_key = smb2_new_lease_key,
4599 .calc_signature = smb2_calc_signature,
4600 .is_read_op = smb21_is_read_op,
4601 .set_oplock_level = smb21_set_oplock_level,
4602 .create_lease_buf = smb2_create_lease_buf,
4603 .parse_lease_buf = smb2_parse_lease_buf,
4604 .copychunk_range = smb2_copychunk_range,
4605 .wp_retry_size = smb2_wp_retry_size,
4606 .dir_needs_close = smb2_dir_needs_close,
4607 .enum_snapshots = smb3_enum_snapshots,
4608 .get_dfs_refer = smb2_get_dfs_refer,
4609 .select_sectype = smb2_select_sectype,
4610 #ifdef CONFIG_CIFS_XATTR
4611 .query_all_EAs = smb2_query_eas,
4612 .set_EA = smb2_set_ea,
4613 #endif /* CIFS_XATTR */
4614 .get_acl = get_smb2_acl,
4615 .get_acl_by_fid = get_smb2_acl_by_fid,
4616 .set_acl = set_smb2_acl,
4617 .next_header = smb2_next_header,
4618 .ioctl_query_info = smb2_ioctl_query_info,
4619 .make_node = smb2_make_node,
4620 .fiemap = smb3_fiemap,
4621 .llseek = smb3_llseek,
4624 struct smb_version_operations smb30_operations = {
4625 .compare_fids = smb2_compare_fids,
4626 .setup_request = smb2_setup_request,
4627 .setup_async_request = smb2_setup_async_request,
4628 .check_receive = smb2_check_receive,
4629 .add_credits = smb2_add_credits,
4630 .set_credits = smb2_set_credits,
4631 .get_credits_field = smb2_get_credits_field,
4632 .get_credits = smb2_get_credits,
4633 .wait_mtu_credits = smb2_wait_mtu_credits,
4634 .adjust_credits = smb2_adjust_credits,
4635 .get_next_mid = smb2_get_next_mid,
4636 .revert_current_mid = smb2_revert_current_mid,
4637 .read_data_offset = smb2_read_data_offset,
4638 .read_data_length = smb2_read_data_length,
4639 .map_error = map_smb2_to_linux_error,
4640 .find_mid = smb2_find_mid,
4641 .check_message = smb2_check_message,
4642 .dump_detail = smb2_dump_detail,
4643 .clear_stats = smb2_clear_stats,
4644 .print_stats = smb2_print_stats,
4645 .dump_share_caps = smb2_dump_share_caps,
4646 .is_oplock_break = smb2_is_valid_oplock_break,
4647 .handle_cancelled_mid = smb2_handle_cancelled_mid,
4648 .downgrade_oplock = smb21_downgrade_oplock,
4649 .need_neg = smb2_need_neg,
4650 .negotiate = smb2_negotiate,
4651 .negotiate_wsize = smb3_negotiate_wsize,
4652 .negotiate_rsize = smb3_negotiate_rsize,
4653 .sess_setup = SMB2_sess_setup,
4654 .logoff = SMB2_logoff,
4655 .tree_connect = SMB2_tcon,
4656 .tree_disconnect = SMB2_tdis,
4657 .qfs_tcon = smb3_qfs_tcon,
4658 .is_path_accessible = smb2_is_path_accessible,
4659 .can_echo = smb2_can_echo,
4661 .query_path_info = smb2_query_path_info,
4662 .get_srv_inum = smb2_get_srv_inum,
4663 .query_file_info = smb2_query_file_info,
4664 .set_path_size = smb2_set_path_size,
4665 .set_file_size = smb2_set_file_size,
4666 .set_file_info = smb2_set_file_info,
4667 .set_compression = smb2_set_compression,
4668 .mkdir = smb2_mkdir,
4669 .mkdir_setinfo = smb2_mkdir_setinfo,
4670 .rmdir = smb2_rmdir,
4671 .unlink = smb2_unlink,
4672 .rename = smb2_rename_path,
4673 .create_hardlink = smb2_create_hardlink,
4674 .query_symlink = smb2_query_symlink,
4675 .query_mf_symlink = smb3_query_mf_symlink,
4676 .create_mf_symlink = smb3_create_mf_symlink,
4677 .open = smb2_open_file,
4678 .set_fid = smb2_set_fid,
4679 .close = smb2_close_file,
4680 .flush = smb2_flush_file,
4681 .async_readv = smb2_async_readv,
4682 .async_writev = smb2_async_writev,
4683 .sync_read = smb2_sync_read,
4684 .sync_write = smb2_sync_write,
4685 .query_dir_first = smb2_query_dir_first,
4686 .query_dir_next = smb2_query_dir_next,
4687 .close_dir = smb2_close_dir,
4688 .calc_smb_size = smb2_calc_size,
4689 .is_status_pending = smb2_is_status_pending,
4690 .is_session_expired = smb2_is_session_expired,
4691 .oplock_response = smb2_oplock_response,
4692 .queryfs = smb2_queryfs,
4693 .mand_lock = smb2_mand_lock,
4694 .mand_unlock_range = smb2_unlock_range,
4695 .push_mand_locks = smb2_push_mandatory_locks,
4696 .get_lease_key = smb2_get_lease_key,
4697 .set_lease_key = smb2_set_lease_key,
4698 .new_lease_key = smb2_new_lease_key,
4699 .generate_signingkey = generate_smb30signingkey,
4700 .calc_signature = smb3_calc_signature,
4701 .set_integrity = smb3_set_integrity,
4702 .is_read_op = smb21_is_read_op,
4703 .set_oplock_level = smb3_set_oplock_level,
4704 .create_lease_buf = smb3_create_lease_buf,
4705 .parse_lease_buf = smb3_parse_lease_buf,
4706 .copychunk_range = smb2_copychunk_range,
4707 .duplicate_extents = smb2_duplicate_extents,
4708 .validate_negotiate = smb3_validate_negotiate,
4709 .wp_retry_size = smb2_wp_retry_size,
4710 .dir_needs_close = smb2_dir_needs_close,
4711 .fallocate = smb3_fallocate,
4712 .enum_snapshots = smb3_enum_snapshots,
4713 .init_transform_rq = smb3_init_transform_rq,
4714 .is_transform_hdr = smb3_is_transform_hdr,
4715 .receive_transform = smb3_receive_transform,
4716 .get_dfs_refer = smb2_get_dfs_refer,
4717 .select_sectype = smb2_select_sectype,
4718 #ifdef CONFIG_CIFS_XATTR
4719 .query_all_EAs = smb2_query_eas,
4720 .set_EA = smb2_set_ea,
4721 #endif /* CIFS_XATTR */
4722 .get_acl = get_smb2_acl,
4723 .get_acl_by_fid = get_smb2_acl_by_fid,
4724 .set_acl = set_smb2_acl,
4725 .next_header = smb2_next_header,
4726 .ioctl_query_info = smb2_ioctl_query_info,
4727 .make_node = smb2_make_node,
4728 .fiemap = smb3_fiemap,
4729 .llseek = smb3_llseek,
4732 struct smb_version_operations smb311_operations = {
4733 .compare_fids = smb2_compare_fids,
4734 .setup_request = smb2_setup_request,
4735 .setup_async_request = smb2_setup_async_request,
4736 .check_receive = smb2_check_receive,
4737 .add_credits = smb2_add_credits,
4738 .set_credits = smb2_set_credits,
4739 .get_credits_field = smb2_get_credits_field,
4740 .get_credits = smb2_get_credits,
4741 .wait_mtu_credits = smb2_wait_mtu_credits,
4742 .adjust_credits = smb2_adjust_credits,
4743 .get_next_mid = smb2_get_next_mid,
4744 .revert_current_mid = smb2_revert_current_mid,
4745 .read_data_offset = smb2_read_data_offset,
4746 .read_data_length = smb2_read_data_length,
4747 .map_error = map_smb2_to_linux_error,
4748 .find_mid = smb2_find_mid,
4749 .check_message = smb2_check_message,
4750 .dump_detail = smb2_dump_detail,
4751 .clear_stats = smb2_clear_stats,
4752 .print_stats = smb2_print_stats,
4753 .dump_share_caps = smb2_dump_share_caps,
4754 .is_oplock_break = smb2_is_valid_oplock_break,
4755 .handle_cancelled_mid = smb2_handle_cancelled_mid,
4756 .downgrade_oplock = smb21_downgrade_oplock,
4757 .need_neg = smb2_need_neg,
4758 .negotiate = smb2_negotiate,
4759 .negotiate_wsize = smb3_negotiate_wsize,
4760 .negotiate_rsize = smb3_negotiate_rsize,
4761 .sess_setup = SMB2_sess_setup,
4762 .logoff = SMB2_logoff,
4763 .tree_connect = SMB2_tcon,
4764 .tree_disconnect = SMB2_tdis,
4765 .qfs_tcon = smb3_qfs_tcon,
4766 .is_path_accessible = smb2_is_path_accessible,
4767 .can_echo = smb2_can_echo,
4769 .query_path_info = smb2_query_path_info,
4770 .get_srv_inum = smb2_get_srv_inum,
4771 .query_file_info = smb2_query_file_info,
4772 .set_path_size = smb2_set_path_size,
4773 .set_file_size = smb2_set_file_size,
4774 .set_file_info = smb2_set_file_info,
4775 .set_compression = smb2_set_compression,
4776 .mkdir = smb2_mkdir,
4777 .mkdir_setinfo = smb2_mkdir_setinfo,
4778 .posix_mkdir = smb311_posix_mkdir,
4779 .rmdir = smb2_rmdir,
4780 .unlink = smb2_unlink,
4781 .rename = smb2_rename_path,
4782 .create_hardlink = smb2_create_hardlink,
4783 .query_symlink = smb2_query_symlink,
4784 .query_mf_symlink = smb3_query_mf_symlink,
4785 .create_mf_symlink = smb3_create_mf_symlink,
4786 .open = smb2_open_file,
4787 .set_fid = smb2_set_fid,
4788 .close = smb2_close_file,
4789 .flush = smb2_flush_file,
4790 .async_readv = smb2_async_readv,
4791 .async_writev = smb2_async_writev,
4792 .sync_read = smb2_sync_read,
4793 .sync_write = smb2_sync_write,
4794 .query_dir_first = smb2_query_dir_first,
4795 .query_dir_next = smb2_query_dir_next,
4796 .close_dir = smb2_close_dir,
4797 .calc_smb_size = smb2_calc_size,
4798 .is_status_pending = smb2_is_status_pending,
4799 .is_session_expired = smb2_is_session_expired,
4800 .oplock_response = smb2_oplock_response,
4801 .queryfs = smb311_queryfs,
4802 .mand_lock = smb2_mand_lock,
4803 .mand_unlock_range = smb2_unlock_range,
4804 .push_mand_locks = smb2_push_mandatory_locks,
4805 .get_lease_key = smb2_get_lease_key,
4806 .set_lease_key = smb2_set_lease_key,
4807 .new_lease_key = smb2_new_lease_key,
4808 .generate_signingkey = generate_smb311signingkey,
4809 .calc_signature = smb3_calc_signature,
4810 .set_integrity = smb3_set_integrity,
4811 .is_read_op = smb21_is_read_op,
4812 .set_oplock_level = smb3_set_oplock_level,
4813 .create_lease_buf = smb3_create_lease_buf,
4814 .parse_lease_buf = smb3_parse_lease_buf,
4815 .copychunk_range = smb2_copychunk_range,
4816 .duplicate_extents = smb2_duplicate_extents,
4817 /* .validate_negotiate = smb3_validate_negotiate, */ /* not used in 3.11 */
4818 .wp_retry_size = smb2_wp_retry_size,
4819 .dir_needs_close = smb2_dir_needs_close,
4820 .fallocate = smb3_fallocate,
4821 .enum_snapshots = smb3_enum_snapshots,
4822 .init_transform_rq = smb3_init_transform_rq,
4823 .is_transform_hdr = smb3_is_transform_hdr,
4824 .receive_transform = smb3_receive_transform,
4825 .get_dfs_refer = smb2_get_dfs_refer,
4826 .select_sectype = smb2_select_sectype,
4827 #ifdef CONFIG_CIFS_XATTR
4828 .query_all_EAs = smb2_query_eas,
4829 .set_EA = smb2_set_ea,
4830 #endif /* CIFS_XATTR */
4831 .get_acl = get_smb2_acl,
4832 .get_acl_by_fid = get_smb2_acl_by_fid,
4833 .set_acl = set_smb2_acl,
4834 .next_header = smb2_next_header,
4835 .ioctl_query_info = smb2_ioctl_query_info,
4836 .make_node = smb2_make_node,
4837 .fiemap = smb3_fiemap,
4838 .llseek = smb3_llseek,
4841 struct smb_version_values smb20_values = {
4842 .version_string = SMB20_VERSION_STRING,
4843 .protocol_id = SMB20_PROT_ID,
4844 .req_capabilities = 0, /* MBZ */
4845 .large_lock_type = 0,
4846 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
4847 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
4848 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
4849 .header_size = sizeof(struct smb2_sync_hdr),
4850 .header_preamble_size = 0,
4851 .max_header_size = MAX_SMB2_HDR_SIZE,
4852 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
4853 .lock_cmd = SMB2_LOCK,
4855 .cap_nt_find = SMB2_NT_FIND,
4856 .cap_large_files = SMB2_LARGE_FILES,
4857 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
4858 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
4859 .create_lease_size = sizeof(struct create_lease),
4862 struct smb_version_values smb21_values = {
4863 .version_string = SMB21_VERSION_STRING,
4864 .protocol_id = SMB21_PROT_ID,
4865 .req_capabilities = 0, /* MBZ on negotiate req until SMB3 dialect */
4866 .large_lock_type = 0,
4867 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
4868 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
4869 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
4870 .header_size = sizeof(struct smb2_sync_hdr),
4871 .header_preamble_size = 0,
4872 .max_header_size = MAX_SMB2_HDR_SIZE,
4873 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
4874 .lock_cmd = SMB2_LOCK,
4876 .cap_nt_find = SMB2_NT_FIND,
4877 .cap_large_files = SMB2_LARGE_FILES,
4878 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
4879 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
4880 .create_lease_size = sizeof(struct create_lease),
4883 struct smb_version_values smb3any_values = {
4884 .version_string = SMB3ANY_VERSION_STRING,
4885 .protocol_id = SMB302_PROT_ID, /* doesn't matter, send protocol array */
4886 .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,
4887 .large_lock_type = 0,
4888 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
4889 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
4890 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
4891 .header_size = sizeof(struct smb2_sync_hdr),
4892 .header_preamble_size = 0,
4893 .max_header_size = MAX_SMB2_HDR_SIZE,
4894 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
4895 .lock_cmd = SMB2_LOCK,
4897 .cap_nt_find = SMB2_NT_FIND,
4898 .cap_large_files = SMB2_LARGE_FILES,
4899 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
4900 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
4901 .create_lease_size = sizeof(struct create_lease_v2),
4904 struct smb_version_values smbdefault_values = {
4905 .version_string = SMBDEFAULT_VERSION_STRING,
4906 .protocol_id = SMB302_PROT_ID, /* doesn't matter, send protocol array */
4907 .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,
4908 .large_lock_type = 0,
4909 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
4910 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
4911 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
4912 .header_size = sizeof(struct smb2_sync_hdr),
4913 .header_preamble_size = 0,
4914 .max_header_size = MAX_SMB2_HDR_SIZE,
4915 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
4916 .lock_cmd = SMB2_LOCK,
4918 .cap_nt_find = SMB2_NT_FIND,
4919 .cap_large_files = SMB2_LARGE_FILES,
4920 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
4921 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
4922 .create_lease_size = sizeof(struct create_lease_v2),
4925 struct smb_version_values smb30_values = {
4926 .version_string = SMB30_VERSION_STRING,
4927 .protocol_id = SMB30_PROT_ID,
4928 .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,
4929 .large_lock_type = 0,
4930 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
4931 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
4932 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
4933 .header_size = sizeof(struct smb2_sync_hdr),
4934 .header_preamble_size = 0,
4935 .max_header_size = MAX_SMB2_HDR_SIZE,
4936 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
4937 .lock_cmd = SMB2_LOCK,
4939 .cap_nt_find = SMB2_NT_FIND,
4940 .cap_large_files = SMB2_LARGE_FILES,
4941 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
4942 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
4943 .create_lease_size = sizeof(struct create_lease_v2),
4946 struct smb_version_values smb302_values = {
4947 .version_string = SMB302_VERSION_STRING,
4948 .protocol_id = SMB302_PROT_ID,
4949 .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,
4950 .large_lock_type = 0,
4951 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
4952 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
4953 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
4954 .header_size = sizeof(struct smb2_sync_hdr),
4955 .header_preamble_size = 0,
4956 .max_header_size = MAX_SMB2_HDR_SIZE,
4957 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
4958 .lock_cmd = SMB2_LOCK,
4960 .cap_nt_find = SMB2_NT_FIND,
4961 .cap_large_files = SMB2_LARGE_FILES,
4962 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
4963 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
4964 .create_lease_size = sizeof(struct create_lease_v2),
4967 struct smb_version_values smb311_values = {
4968 .version_string = SMB311_VERSION_STRING,
4969 .protocol_id = SMB311_PROT_ID,
4970 .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,
4971 .large_lock_type = 0,
4972 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
4973 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
4974 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
4975 .header_size = sizeof(struct smb2_sync_hdr),
4976 .header_preamble_size = 0,
4977 .max_header_size = MAX_SMB2_HDR_SIZE,
4978 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
4979 .lock_cmd = SMB2_LOCK,
4981 .cap_nt_find = SMB2_NT_FIND,
4982 .cap_large_files = SMB2_LARGE_FILES,
4983 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
4984 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
4985 .create_lease_size = sizeof(struct create_lease_v2),