1 // SPDX-License-Identifier: GPL-2.0
3 * SMB2 version specific operations
5 * Copyright (c) 2012, Jeff Layton <jlayton@redhat.com>
8 #include <linux/pagemap.h>
10 #include <linux/falloc.h>
11 #include <linux/scatterlist.h>
12 #include <linux/uuid.h>
13 #include <linux/sort.h>
14 #include <crypto/aead.h>
15 #include <linux/fiemap.h>
19 #include "smb2proto.h"
20 #include "cifsproto.h"
21 #include "cifs_debug.h"
22 #include "cifs_unicode.h"
23 #include "smb2status.h"
25 #include "cifs_ioctl.h"
26 #include "smbdirect.h"
27 #include "fs_context.h"
29 /* Change credits for different ops and return the total number of credits */
31 change_conf(struct TCP_Server_Info *server)
33 server->credits += server->echo_credits + server->oplock_credits;
34 server->oplock_credits = server->echo_credits = 0;
35 switch (server->credits) {
39 server->echoes = false;
40 server->oplocks = false;
43 server->echoes = true;
44 server->oplocks = false;
45 server->echo_credits = 1;
48 server->echoes = true;
50 server->oplocks = true;
51 server->oplock_credits = 1;
53 server->oplocks = false;
55 server->echo_credits = 1;
57 server->credits -= server->echo_credits + server->oplock_credits;
58 return server->credits + server->echo_credits + server->oplock_credits;
62 smb2_add_credits(struct TCP_Server_Info *server,
63 const struct cifs_credits *credits, const int optype)
66 int scredits, in_flight;
67 unsigned int add = credits->value;
68 unsigned int instance = credits->instance;
69 bool reconnect_detected = false;
70 bool reconnect_with_invalid_credits = false;
72 spin_lock(&server->req_lock);
73 val = server->ops->get_credits_field(server, optype);
75 /* eg found case where write overlapping reconnect messed up credits */
76 if (((optype & CIFS_OP_MASK) == CIFS_NEG_OP) && (*val != 0))
77 reconnect_with_invalid_credits = true;
79 if ((instance == 0) || (instance == server->reconnect_instance))
82 reconnect_detected = true;
85 *val = 65000; /* Don't get near 64K credits, avoid srv bugs */
86 pr_warn_once("server overflowed SMB3 credits\n");
89 if (server->in_flight == 0 &&
90 ((optype & CIFS_OP_MASK) != CIFS_NEG_OP) &&
91 ((optype & CIFS_OP_MASK) != CIFS_SESS_OP))
92 rc = change_conf(server);
94 * Sometimes server returns 0 credits on oplock break ack - we need to
95 * rebalance credits in this case.
97 else if (server->in_flight > 0 && server->oplock_credits == 0 &&
99 if (server->credits > 1) {
101 server->oplock_credits++;
105 in_flight = server->in_flight;
106 spin_unlock(&server->req_lock);
107 wake_up(&server->request_q);
109 if (reconnect_detected) {
110 trace_smb3_reconnect_detected(server->CurrentMid,
111 server->conn_id, server->hostname, scredits, add, in_flight);
113 cifs_dbg(FYI, "trying to put %d credits from the old server instance %d\n",
117 if (reconnect_with_invalid_credits) {
118 trace_smb3_reconnect_with_invalid_credits(server->CurrentMid,
119 server->conn_id, server->hostname, scredits, add, in_flight);
120 cifs_dbg(FYI, "Negotiate operation when server credits is non-zero. Optype: %d, server credits: %d, credits added: %d\n",
121 optype, scredits, add);
124 if (server->tcpStatus == CifsNeedReconnect
125 || server->tcpStatus == CifsExiting)
130 /* change_conf hasn't been executed */
133 cifs_server_dbg(VFS, "Possible client or server bug - zero credits\n");
136 cifs_server_dbg(VFS, "disabling echoes and oplocks\n");
139 cifs_dbg(FYI, "disabling oplocks\n");
142 /* change_conf rebalanced credits for different types */
146 trace_smb3_add_credits(server->CurrentMid,
147 server->conn_id, server->hostname, scredits, add, in_flight);
148 cifs_dbg(FYI, "%s: added %u credits total=%d\n", __func__, add, scredits);
152 smb2_set_credits(struct TCP_Server_Info *server, const int val)
154 int scredits, in_flight;
156 spin_lock(&server->req_lock);
157 server->credits = val;
159 server->reconnect_instance++;
160 scredits = server->credits;
161 in_flight = server->in_flight;
162 spin_unlock(&server->req_lock);
164 trace_smb3_set_credits(server->CurrentMid,
165 server->conn_id, server->hostname, scredits, val, in_flight);
166 cifs_dbg(FYI, "%s: set %u credits\n", __func__, val);
168 /* don't log while holding the lock */
170 cifs_dbg(FYI, "set credits to 1 due to smb2 reconnect\n");
174 smb2_get_credits_field(struct TCP_Server_Info *server, const int optype)
178 return &server->echo_credits;
180 return &server->oplock_credits;
182 return &server->credits;
187 smb2_get_credits(struct mid_q_entry *mid)
189 return mid->credits_received;
193 smb2_wait_mtu_credits(struct TCP_Server_Info *server, unsigned int size,
194 unsigned int *num, struct cifs_credits *credits)
197 unsigned int scredits, in_flight;
199 spin_lock(&server->req_lock);
201 if (server->credits <= 0) {
202 spin_unlock(&server->req_lock);
203 cifs_num_waiters_inc(server);
204 rc = wait_event_killable(server->request_q,
205 has_credits(server, &server->credits, 1));
206 cifs_num_waiters_dec(server);
209 spin_lock(&server->req_lock);
211 if (server->tcpStatus == CifsExiting) {
212 spin_unlock(&server->req_lock);
216 scredits = server->credits;
217 /* can deadlock with reopen */
219 *num = SMB2_MAX_BUFFER_SIZE;
221 credits->instance = 0;
225 /* leave some credits for reopen and other ops */
227 *num = min_t(unsigned int, size,
228 scredits * SMB2_MAX_BUFFER_SIZE);
231 DIV_ROUND_UP(*num, SMB2_MAX_BUFFER_SIZE);
232 credits->instance = server->reconnect_instance;
233 server->credits -= credits->value;
235 if (server->in_flight > server->max_in_flight)
236 server->max_in_flight = server->in_flight;
240 scredits = server->credits;
241 in_flight = server->in_flight;
242 spin_unlock(&server->req_lock);
244 trace_smb3_add_credits(server->CurrentMid,
245 server->conn_id, server->hostname, scredits, -(credits->value), in_flight);
246 cifs_dbg(FYI, "%s: removed %u credits total=%d\n",
247 __func__, credits->value, scredits);
253 smb2_adjust_credits(struct TCP_Server_Info *server,
254 struct cifs_credits *credits,
255 const unsigned int payload_size)
257 int new_val = DIV_ROUND_UP(payload_size, SMB2_MAX_BUFFER_SIZE);
258 int scredits, in_flight;
260 if (!credits->value || credits->value == new_val)
263 if (credits->value < new_val) {
264 trace_smb3_too_many_credits(server->CurrentMid,
265 server->conn_id, server->hostname, 0, credits->value - new_val, 0);
266 cifs_server_dbg(VFS, "request has less credits (%d) than required (%d)",
267 credits->value, new_val);
272 spin_lock(&server->req_lock);
274 if (server->reconnect_instance != credits->instance) {
275 scredits = server->credits;
276 in_flight = server->in_flight;
277 spin_unlock(&server->req_lock);
279 trace_smb3_reconnect_detected(server->CurrentMid,
280 server->conn_id, server->hostname, scredits,
281 credits->value - new_val, in_flight);
282 cifs_server_dbg(VFS, "trying to return %d credits to old session\n",
283 credits->value - new_val);
287 server->credits += credits->value - new_val;
288 scredits = server->credits;
289 in_flight = server->in_flight;
290 spin_unlock(&server->req_lock);
291 wake_up(&server->request_q);
293 trace_smb3_add_credits(server->CurrentMid,
294 server->conn_id, server->hostname, scredits,
295 credits->value - new_val, in_flight);
296 cifs_dbg(FYI, "%s: adjust added %u credits total=%d\n",
297 __func__, credits->value - new_val, scredits);
299 credits->value = new_val;
305 smb2_get_next_mid(struct TCP_Server_Info *server)
308 /* for SMB2 we need the current value */
309 spin_lock(&GlobalMid_Lock);
310 mid = server->CurrentMid++;
311 spin_unlock(&GlobalMid_Lock);
316 smb2_revert_current_mid(struct TCP_Server_Info *server, const unsigned int val)
318 spin_lock(&GlobalMid_Lock);
319 if (server->CurrentMid >= val)
320 server->CurrentMid -= val;
321 spin_unlock(&GlobalMid_Lock);
324 static struct mid_q_entry *
325 __smb2_find_mid(struct TCP_Server_Info *server, char *buf, bool dequeue)
327 struct mid_q_entry *mid;
328 struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)buf;
329 __u64 wire_mid = le64_to_cpu(shdr->MessageId);
331 if (shdr->ProtocolId == SMB2_TRANSFORM_PROTO_NUM) {
332 cifs_server_dbg(VFS, "Encrypted frame parsing not supported yet\n");
336 spin_lock(&GlobalMid_Lock);
337 list_for_each_entry(mid, &server->pending_mid_q, qhead) {
338 if ((mid->mid == wire_mid) &&
339 (mid->mid_state == MID_REQUEST_SUBMITTED) &&
340 (mid->command == shdr->Command)) {
341 kref_get(&mid->refcount);
343 list_del_init(&mid->qhead);
344 mid->mid_flags |= MID_DELETED;
346 spin_unlock(&GlobalMid_Lock);
350 spin_unlock(&GlobalMid_Lock);
354 static struct mid_q_entry *
355 smb2_find_mid(struct TCP_Server_Info *server, char *buf)
357 return __smb2_find_mid(server, buf, false);
360 static struct mid_q_entry *
361 smb2_find_dequeue_mid(struct TCP_Server_Info *server, char *buf)
363 return __smb2_find_mid(server, buf, true);
367 smb2_dump_detail(void *buf, struct TCP_Server_Info *server)
369 #ifdef CONFIG_CIFS_DEBUG2
370 struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)buf;
372 cifs_server_dbg(VFS, "Cmd: %d Err: 0x%x Flags: 0x%x Mid: %llu Pid: %d\n",
373 shdr->Command, shdr->Status, shdr->Flags, shdr->MessageId,
375 cifs_server_dbg(VFS, "smb buf %p len %u\n", buf,
376 server->ops->calc_smb_size(buf, server));
381 smb2_need_neg(struct TCP_Server_Info *server)
383 return server->max_read == 0;
387 smb2_negotiate(const unsigned int xid, struct cifs_ses *ses)
391 cifs_ses_server(ses)->CurrentMid = 0;
392 rc = SMB2_negotiate(xid, ses);
393 /* BB we probably don't need to retry with modern servers */
400 smb2_negotiate_wsize(struct cifs_tcon *tcon, struct smb3_fs_context *ctx)
402 struct TCP_Server_Info *server = tcon->ses->server;
405 /* start with specified wsize, or default */
406 wsize = ctx->wsize ? ctx->wsize : CIFS_DEFAULT_IOSIZE;
407 wsize = min_t(unsigned int, wsize, server->max_write);
408 if (!(server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU))
409 wsize = min_t(unsigned int, wsize, SMB2_MAX_BUFFER_SIZE);
415 smb3_negotiate_wsize(struct cifs_tcon *tcon, struct smb3_fs_context *ctx)
417 struct TCP_Server_Info *server = tcon->ses->server;
420 /* start with specified wsize, or default */
421 wsize = ctx->wsize ? ctx->wsize : SMB3_DEFAULT_IOSIZE;
422 wsize = min_t(unsigned int, wsize, server->max_write);
423 #ifdef CONFIG_CIFS_SMB_DIRECT
427 * Account for SMB2 data transfer packet header and
428 * possible encryption header
430 wsize = min_t(unsigned int,
432 server->smbd_conn->max_fragmented_send_size -
433 SMB2_READWRITE_PDU_HEADER_SIZE -
434 sizeof(struct smb2_transform_hdr));
436 wsize = min_t(unsigned int,
437 wsize, server->smbd_conn->max_readwrite_size);
440 if (!(server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU))
441 wsize = min_t(unsigned int, wsize, SMB2_MAX_BUFFER_SIZE);
447 smb2_negotiate_rsize(struct cifs_tcon *tcon, struct smb3_fs_context *ctx)
449 struct TCP_Server_Info *server = tcon->ses->server;
452 /* start with specified rsize, or default */
453 rsize = ctx->rsize ? ctx->rsize : CIFS_DEFAULT_IOSIZE;
454 rsize = min_t(unsigned int, rsize, server->max_read);
456 if (!(server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU))
457 rsize = min_t(unsigned int, rsize, SMB2_MAX_BUFFER_SIZE);
463 smb3_negotiate_rsize(struct cifs_tcon *tcon, struct smb3_fs_context *ctx)
465 struct TCP_Server_Info *server = tcon->ses->server;
468 /* start with specified rsize, or default */
469 rsize = ctx->rsize ? ctx->rsize : SMB3_DEFAULT_IOSIZE;
470 rsize = min_t(unsigned int, rsize, server->max_read);
471 #ifdef CONFIG_CIFS_SMB_DIRECT
475 * Account for SMB2 data transfer packet header and
476 * possible encryption header
478 rsize = min_t(unsigned int,
480 server->smbd_conn->max_fragmented_recv_size -
481 SMB2_READWRITE_PDU_HEADER_SIZE -
482 sizeof(struct smb2_transform_hdr));
484 rsize = min_t(unsigned int,
485 rsize, server->smbd_conn->max_readwrite_size);
489 if (!(server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU))
490 rsize = min_t(unsigned int, rsize, SMB2_MAX_BUFFER_SIZE);
496 parse_server_interfaces(struct network_interface_info_ioctl_rsp *buf,
498 struct cifs_server_iface **iface_list,
501 struct network_interface_info_ioctl_rsp *p;
502 struct sockaddr_in *addr4;
503 struct sockaddr_in6 *addr6;
504 struct iface_info_ipv4 *p4;
505 struct iface_info_ipv6 *p6;
506 struct cifs_server_iface *info;
516 * Fist pass: count and sanity check
519 bytes_left = buf_len;
521 while (bytes_left >= sizeof(*p)) {
523 next = le32_to_cpu(p->Next);
525 bytes_left -= sizeof(*p);
528 p = (struct network_interface_info_ioctl_rsp *)((u8 *)p+next);
533 cifs_dbg(VFS, "%s: malformed interface info\n", __func__);
538 /* Azure rounds the buffer size up 8, to a 16 byte boundary */
539 if ((bytes_left > 8) || p->Next)
540 cifs_dbg(VFS, "%s: incomplete interface info\n", __func__);
544 * Second pass: extract info to internal structure
547 *iface_list = kcalloc(nb_iface, sizeof(**iface_list), GFP_KERNEL);
554 bytes_left = buf_len;
556 while (bytes_left >= sizeof(*p)) {
557 info->speed = le64_to_cpu(p->LinkSpeed);
558 info->rdma_capable = le32_to_cpu(p->Capability & RDMA_CAPABLE);
559 info->rss_capable = le32_to_cpu(p->Capability & RSS_CAPABLE);
561 cifs_dbg(FYI, "%s: adding iface %zu\n", __func__, *iface_count);
562 cifs_dbg(FYI, "%s: speed %zu bps\n", __func__, info->speed);
563 cifs_dbg(FYI, "%s: capabilities 0x%08x\n", __func__,
564 le32_to_cpu(p->Capability));
568 * The kernel and wire socket structures have the same
569 * layout and use network byte order but make the
570 * conversion explicit in case either one changes.
573 addr4 = (struct sockaddr_in *)&info->sockaddr;
574 p4 = (struct iface_info_ipv4 *)p->Buffer;
575 addr4->sin_family = AF_INET;
576 memcpy(&addr4->sin_addr, &p4->IPv4Address, 4);
578 /* [MS-SMB2] 2.2.32.5.1.1 Clients MUST ignore these */
579 addr4->sin_port = cpu_to_be16(CIFS_PORT);
581 cifs_dbg(FYI, "%s: ipv4 %pI4\n", __func__,
585 addr6 = (struct sockaddr_in6 *)&info->sockaddr;
586 p6 = (struct iface_info_ipv6 *)p->Buffer;
587 addr6->sin6_family = AF_INET6;
588 memcpy(&addr6->sin6_addr, &p6->IPv6Address, 16);
590 /* [MS-SMB2] 2.2.32.5.1.2 Clients MUST ignore these */
591 addr6->sin6_flowinfo = 0;
592 addr6->sin6_scope_id = 0;
593 addr6->sin6_port = cpu_to_be16(CIFS_PORT);
595 cifs_dbg(FYI, "%s: ipv6 %pI6\n", __func__,
600 "%s: skipping unsupported socket family\n",
608 next = le32_to_cpu(p->Next);
611 p = (struct network_interface_info_ioctl_rsp *)((u8 *)p+next);
629 static int compare_iface(const void *ia, const void *ib)
631 const struct cifs_server_iface *a = (struct cifs_server_iface *)ia;
632 const struct cifs_server_iface *b = (struct cifs_server_iface *)ib;
634 return a->speed == b->speed ? 0 : (a->speed > b->speed ? -1 : 1);
638 SMB3_request_interfaces(const unsigned int xid, struct cifs_tcon *tcon)
641 unsigned int ret_data_len = 0;
642 struct network_interface_info_ioctl_rsp *out_buf = NULL;
643 struct cifs_server_iface *iface_list;
645 struct cifs_ses *ses = tcon->ses;
647 rc = SMB2_ioctl(xid, tcon, NO_FILE_ID, NO_FILE_ID,
648 FSCTL_QUERY_NETWORK_INTERFACE_INFO, true /* is_fsctl */,
649 NULL /* no data input */, 0 /* no data input */,
650 CIFSMaxBufSize, (char **)&out_buf, &ret_data_len);
651 if (rc == -EOPNOTSUPP) {
653 "server does not support query network interfaces\n");
655 } else if (rc != 0) {
656 cifs_tcon_dbg(VFS, "error %d on ioctl to get interface list\n", rc);
660 rc = parse_server_interfaces(out_buf, ret_data_len,
661 &iface_list, &iface_count);
665 /* sort interfaces from fastest to slowest */
666 sort(iface_list, iface_count, sizeof(*iface_list), compare_iface, NULL);
668 spin_lock(&ses->iface_lock);
669 kfree(ses->iface_list);
670 ses->iface_list = iface_list;
671 ses->iface_count = iface_count;
672 ses->iface_last_update = jiffies;
673 spin_unlock(&ses->iface_lock);
681 smb2_close_cached_fid(struct kref *ref)
683 struct cached_fid *cfid = container_of(ref, struct cached_fid,
686 if (cfid->is_valid) {
687 cifs_dbg(FYI, "clear cached root file handle\n");
688 SMB2_close(0, cfid->tcon, cfid->fid->persistent_fid,
689 cfid->fid->volatile_fid);
690 cfid->is_valid = false;
691 cfid->file_all_info_is_valid = false;
692 cfid->has_lease = false;
700 void close_cached_dir(struct cached_fid *cfid)
702 mutex_lock(&cfid->fid_mutex);
703 kref_put(&cfid->refcount, smb2_close_cached_fid);
704 mutex_unlock(&cfid->fid_mutex);
707 void close_cached_dir_lease_locked(struct cached_fid *cfid)
709 if (cfid->has_lease) {
710 cfid->has_lease = false;
711 kref_put(&cfid->refcount, smb2_close_cached_fid);
715 void close_cached_dir_lease(struct cached_fid *cfid)
717 mutex_lock(&cfid->fid_mutex);
718 close_cached_dir_lease_locked(cfid);
719 mutex_unlock(&cfid->fid_mutex);
723 smb2_cached_lease_break(struct work_struct *work)
725 struct cached_fid *cfid = container_of(work,
726 struct cached_fid, lease_break);
728 close_cached_dir_lease(cfid);
732 * Open the and cache a directory handle.
733 * Only supported for the root handle.
735 int open_cached_dir(unsigned int xid, struct cifs_tcon *tcon,
737 struct cifs_sb_info *cifs_sb,
738 struct cached_fid **cfid)
740 struct cifs_ses *ses = tcon->ses;
741 struct TCP_Server_Info *server = ses->server;
742 struct cifs_open_parms oparms;
743 struct smb2_create_rsp *o_rsp = NULL;
744 struct smb2_query_info_rsp *qi_rsp = NULL;
746 struct smb_rqst rqst[2];
747 struct kvec rsp_iov[2];
748 struct kvec open_iov[SMB2_CREATE_IOV_SIZE];
749 struct kvec qi_iov[1];
751 __le16 utf16_path = 0; /* Null - since an open of top of share */
752 u8 oplock = SMB2_OPLOCK_LEVEL_II;
753 struct cifs_fid *pfid;
754 struct dentry *dentry;
756 if (tcon->nohandlecache)
759 if (cifs_sb->root == NULL)
765 dentry = cifs_sb->root;
767 mutex_lock(&tcon->crfid.fid_mutex);
768 if (tcon->crfid.is_valid) {
769 cifs_dbg(FYI, "found a cached root file handle\n");
770 *cfid = &tcon->crfid;
771 kref_get(&tcon->crfid.refcount);
772 mutex_unlock(&tcon->crfid.fid_mutex);
777 * We do not hold the lock for the open because in case
778 * SMB2_open needs to reconnect, it will end up calling
779 * cifs_mark_open_files_invalid() which takes the lock again
780 * thus causing a deadlock
783 mutex_unlock(&tcon->crfid.fid_mutex);
785 if (smb3_encryption_required(tcon))
786 flags |= CIFS_TRANSFORM_REQ;
788 if (!server->ops->new_lease_key)
791 pfid = tcon->crfid.fid;
792 server->ops->new_lease_key(pfid);
794 memset(rqst, 0, sizeof(rqst));
795 resp_buftype[0] = resp_buftype[1] = CIFS_NO_BUFFER;
796 memset(rsp_iov, 0, sizeof(rsp_iov));
799 memset(&open_iov, 0, sizeof(open_iov));
800 rqst[0].rq_iov = open_iov;
801 rqst[0].rq_nvec = SMB2_CREATE_IOV_SIZE;
804 oparms.create_options = cifs_create_options(cifs_sb, 0);
805 oparms.desired_access = FILE_READ_ATTRIBUTES;
806 oparms.disposition = FILE_OPEN;
808 oparms.reconnect = false;
810 rc = SMB2_open_init(tcon, server,
811 &rqst[0], &oplock, &oparms, &utf16_path);
814 smb2_set_next_command(tcon, &rqst[0]);
816 memset(&qi_iov, 0, sizeof(qi_iov));
817 rqst[1].rq_iov = qi_iov;
820 rc = SMB2_query_info_init(tcon, server,
821 &rqst[1], COMPOUND_FID,
822 COMPOUND_FID, FILE_ALL_INFORMATION,
824 sizeof(struct smb2_file_all_info) +
825 PATH_MAX * 2, 0, NULL);
829 smb2_set_related(&rqst[1]);
831 rc = compound_send_recv(xid, ses, server,
833 resp_buftype, rsp_iov);
834 mutex_lock(&tcon->crfid.fid_mutex);
837 * Now we need to check again as the cached root might have
838 * been successfully re-opened from a concurrent process
841 if (tcon->crfid.is_valid) {
842 /* work was already done */
844 /* stash fids for close() later */
845 struct cifs_fid fid = {
846 .persistent_fid = pfid->persistent_fid,
847 .volatile_fid = pfid->volatile_fid,
851 * caller expects this func to set the fid in crfid to valid
852 * cached root, so increment the refcount.
854 kref_get(&tcon->crfid.refcount);
856 mutex_unlock(&tcon->crfid.fid_mutex);
859 /* close extra handle outside of crit sec */
860 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
866 /* Cached root is still invalid, continue normaly */
869 if (rc == -EREMCHG) {
870 tcon->need_reconnect = true;
871 pr_warn_once("server share %s deleted\n",
877 atomic_inc(&tcon->num_remote_opens);
879 o_rsp = (struct smb2_create_rsp *)rsp_iov[0].iov_base;
880 oparms.fid->persistent_fid = o_rsp->PersistentFileId;
881 oparms.fid->volatile_fid = o_rsp->VolatileFileId;
882 #ifdef CONFIG_CIFS_DEBUG2
883 oparms.fid->mid = le64_to_cpu(o_rsp->sync_hdr.MessageId);
884 #endif /* CIFS_DEBUG2 */
886 tcon->crfid.tcon = tcon;
887 tcon->crfid.is_valid = true;
888 tcon->crfid.dentry = dentry;
890 kref_init(&tcon->crfid.refcount);
892 /* BB TBD check to see if oplock level check can be removed below */
893 if (o_rsp->OplockLevel == SMB2_OPLOCK_LEVEL_LEASE) {
895 * See commit 2f94a3125b87. Increment the refcount when we
896 * get a lease for root, release it if lease break occurs
898 kref_get(&tcon->crfid.refcount);
899 tcon->crfid.has_lease = true;
900 smb2_parse_contexts(server, o_rsp,
902 oparms.fid->lease_key, &oplock,
907 qi_rsp = (struct smb2_query_info_rsp *)rsp_iov[1].iov_base;
908 if (le32_to_cpu(qi_rsp->OutputBufferLength) < sizeof(struct smb2_file_all_info))
910 if (!smb2_validate_and_copy_iov(
911 le16_to_cpu(qi_rsp->OutputBufferOffset),
912 sizeof(struct smb2_file_all_info),
913 &rsp_iov[1], sizeof(struct smb2_file_all_info),
914 (char *)&tcon->crfid.file_all_info))
915 tcon->crfid.file_all_info_is_valid = true;
916 tcon->crfid.time = jiffies;
920 mutex_unlock(&tcon->crfid.fid_mutex);
922 SMB2_open_free(&rqst[0]);
923 SMB2_query_info_free(&rqst[1]);
924 free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base);
925 free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base);
927 *cfid = &tcon->crfid;
931 int open_cached_dir_by_dentry(struct cifs_tcon *tcon,
932 struct dentry *dentry,
933 struct cached_fid **cfid)
935 mutex_lock(&tcon->crfid.fid_mutex);
936 if (tcon->crfid.dentry == dentry) {
937 cifs_dbg(FYI, "found a cached root file handle by dentry\n");
938 *cfid = &tcon->crfid;
939 kref_get(&tcon->crfid.refcount);
940 mutex_unlock(&tcon->crfid.fid_mutex);
943 mutex_unlock(&tcon->crfid.fid_mutex);
948 smb3_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon,
949 struct cifs_sb_info *cifs_sb)
952 __le16 srch_path = 0; /* Null - open root of share */
953 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
954 struct cifs_open_parms oparms;
956 struct cached_fid *cfid = NULL;
959 oparms.desired_access = FILE_READ_ATTRIBUTES;
960 oparms.disposition = FILE_OPEN;
961 oparms.create_options = cifs_create_options(cifs_sb, 0);
963 oparms.reconnect = false;
965 rc = open_cached_dir(xid, tcon, "", cifs_sb, &cfid);
967 memcpy(&fid, cfid->fid, sizeof(struct cifs_fid));
969 rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL,
974 SMB3_request_interfaces(xid, tcon);
976 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
977 FS_ATTRIBUTE_INFORMATION);
978 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
979 FS_DEVICE_INFORMATION);
980 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
981 FS_VOLUME_INFORMATION);
982 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
983 FS_SECTOR_SIZE_INFORMATION); /* SMB3 specific */
985 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
987 close_cached_dir(cfid);
991 smb2_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon,
992 struct cifs_sb_info *cifs_sb)
995 __le16 srch_path = 0; /* Null - open root of share */
996 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
997 struct cifs_open_parms oparms;
1001 oparms.desired_access = FILE_READ_ATTRIBUTES;
1002 oparms.disposition = FILE_OPEN;
1003 oparms.create_options = cifs_create_options(cifs_sb, 0);
1005 oparms.reconnect = false;
1007 rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL,
1012 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
1013 FS_ATTRIBUTE_INFORMATION);
1014 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
1015 FS_DEVICE_INFORMATION);
1016 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
1020 smb2_is_path_accessible(const unsigned int xid, struct cifs_tcon *tcon,
1021 struct cifs_sb_info *cifs_sb, const char *full_path)
1025 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
1026 struct cifs_open_parms oparms;
1027 struct cifs_fid fid;
1029 if ((*full_path == 0) && tcon->crfid.is_valid)
1032 utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb);
1037 oparms.desired_access = FILE_READ_ATTRIBUTES;
1038 oparms.disposition = FILE_OPEN;
1039 oparms.create_options = cifs_create_options(cifs_sb, 0);
1041 oparms.reconnect = false;
1043 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL, NULL,
1050 rc = SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
1056 smb2_get_srv_inum(const unsigned int xid, struct cifs_tcon *tcon,
1057 struct cifs_sb_info *cifs_sb, const char *full_path,
1058 u64 *uniqueid, FILE_ALL_INFO *data)
1060 *uniqueid = le64_to_cpu(data->IndexNumber);
1065 smb2_query_file_info(const unsigned int xid, struct cifs_tcon *tcon,
1066 struct cifs_fid *fid, FILE_ALL_INFO *data)
1069 struct smb2_file_all_info *smb2_data;
1071 smb2_data = kzalloc(sizeof(struct smb2_file_all_info) + PATH_MAX * 2,
1073 if (smb2_data == NULL)
1076 rc = SMB2_query_info(xid, tcon, fid->persistent_fid, fid->volatile_fid,
1079 move_smb2_info_to_cifs(data, smb2_data);
1084 #ifdef CONFIG_CIFS_XATTR
1086 move_smb2_ea_to_cifs(char *dst, size_t dst_size,
1087 struct smb2_file_full_ea_info *src, size_t src_size,
1088 const unsigned char *ea_name)
1091 unsigned int ea_name_len = ea_name ? strlen(ea_name) : 0;
1093 size_t buf_size = dst_size;
1094 size_t name_len, value_len, user_name_len;
1096 while (src_size > 0) {
1097 name = &src->ea_data[0];
1098 name_len = (size_t)src->ea_name_length;
1099 value = &src->ea_data[src->ea_name_length + 1];
1100 value_len = (size_t)le16_to_cpu(src->ea_value_length);
1105 if (src_size < 8 + name_len + 1 + value_len) {
1106 cifs_dbg(FYI, "EA entry goes beyond length of list\n");
1112 if (ea_name_len == name_len &&
1113 memcmp(ea_name, name, name_len) == 0) {
1117 if (dst_size < value_len) {
1121 memcpy(dst, value, value_len);
1125 /* 'user.' plus a terminating null */
1126 user_name_len = 5 + 1 + name_len;
1128 if (buf_size == 0) {
1129 /* skip copy - calc size only */
1130 rc += user_name_len;
1131 } else if (dst_size >= user_name_len) {
1132 dst_size -= user_name_len;
1133 memcpy(dst, "user.", 5);
1135 memcpy(dst, src->ea_data, name_len);
1139 rc += user_name_len;
1141 /* stop before overrun buffer */
1147 if (!src->next_entry_offset)
1150 if (src_size < le32_to_cpu(src->next_entry_offset)) {
1151 /* stop before overrun buffer */
1155 src_size -= le32_to_cpu(src->next_entry_offset);
1156 src = (void *)((char *)src +
1157 le32_to_cpu(src->next_entry_offset));
1160 /* didn't find the named attribute */
1169 smb2_query_eas(const unsigned int xid, struct cifs_tcon *tcon,
1170 const unsigned char *path, const unsigned char *ea_name,
1171 char *ea_data, size_t buf_size,
1172 struct cifs_sb_info *cifs_sb)
1176 struct kvec rsp_iov = {NULL, 0};
1177 int buftype = CIFS_NO_BUFFER;
1178 struct smb2_query_info_rsp *rsp;
1179 struct smb2_file_full_ea_info *info = NULL;
1181 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
1185 rc = smb2_query_info_compound(xid, tcon, utf16_path,
1187 FILE_FULL_EA_INFORMATION,
1190 MAX_SMB2_CREATE_RESPONSE_SIZE -
1191 MAX_SMB2_CLOSE_RESPONSE_SIZE,
1192 &rsp_iov, &buftype, cifs_sb);
1195 * If ea_name is NULL (listxattr) and there are no EAs,
1196 * return 0 as it's not an error. Otherwise, the specified
1197 * ea_name was not found.
1199 if (!ea_name && rc == -ENODATA)
1204 rsp = (struct smb2_query_info_rsp *)rsp_iov.iov_base;
1205 rc = smb2_validate_iov(le16_to_cpu(rsp->OutputBufferOffset),
1206 le32_to_cpu(rsp->OutputBufferLength),
1208 sizeof(struct smb2_file_full_ea_info));
1212 info = (struct smb2_file_full_ea_info *)(
1213 le16_to_cpu(rsp->OutputBufferOffset) + (char *)rsp);
1214 rc = move_smb2_ea_to_cifs(ea_data, buf_size, info,
1215 le32_to_cpu(rsp->OutputBufferLength), ea_name);
1219 free_rsp_buf(buftype, rsp_iov.iov_base);
1225 smb2_set_ea(const unsigned int xid, struct cifs_tcon *tcon,
1226 const char *path, const char *ea_name, const void *ea_value,
1227 const __u16 ea_value_len, const struct nls_table *nls_codepage,
1228 struct cifs_sb_info *cifs_sb)
1230 struct cifs_ses *ses = tcon->ses;
1231 struct TCP_Server_Info *server = cifs_pick_channel(ses);
1232 __le16 *utf16_path = NULL;
1233 int ea_name_len = strlen(ea_name);
1234 int flags = CIFS_CP_CREATE_CLOSE_OP;
1236 struct smb_rqst rqst[3];
1237 int resp_buftype[3];
1238 struct kvec rsp_iov[3];
1239 struct kvec open_iov[SMB2_CREATE_IOV_SIZE];
1240 struct cifs_open_parms oparms;
1241 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
1242 struct cifs_fid fid;
1243 struct kvec si_iov[SMB2_SET_INFO_IOV_SIZE];
1244 unsigned int size[1];
1246 struct smb2_file_full_ea_info *ea = NULL;
1247 struct kvec close_iov[1];
1248 struct smb2_query_info_rsp *rsp;
1249 int rc, used_len = 0;
1251 if (smb3_encryption_required(tcon))
1252 flags |= CIFS_TRANSFORM_REQ;
1254 if (ea_name_len > 255)
1257 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
1261 memset(rqst, 0, sizeof(rqst));
1262 resp_buftype[0] = resp_buftype[1] = resp_buftype[2] = CIFS_NO_BUFFER;
1263 memset(rsp_iov, 0, sizeof(rsp_iov));
1265 if (ses->server->ops->query_all_EAs) {
1267 rc = ses->server->ops->query_all_EAs(xid, tcon, path,
1273 /* If we are adding a attribute we should first check
1274 * if there will be enough space available to store
1275 * the new EA. If not we should not add it since we
1276 * would not be able to even read the EAs back.
1278 rc = smb2_query_info_compound(xid, tcon, utf16_path,
1280 FILE_FULL_EA_INFORMATION,
1283 MAX_SMB2_CREATE_RESPONSE_SIZE -
1284 MAX_SMB2_CLOSE_RESPONSE_SIZE,
1285 &rsp_iov[1], &resp_buftype[1], cifs_sb);
1287 rsp = (struct smb2_query_info_rsp *)rsp_iov[1].iov_base;
1288 used_len = le32_to_cpu(rsp->OutputBufferLength);
1290 free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base);
1291 resp_buftype[1] = CIFS_NO_BUFFER;
1292 memset(&rsp_iov[1], 0, sizeof(rsp_iov[1]));
1295 /* Use a fudge factor of 256 bytes in case we collide
1296 * with a different set_EAs command.
1298 if(CIFSMaxBufSize - MAX_SMB2_CREATE_RESPONSE_SIZE -
1299 MAX_SMB2_CLOSE_RESPONSE_SIZE - 256 <
1300 used_len + ea_name_len + ea_value_len + 1) {
1308 memset(&open_iov, 0, sizeof(open_iov));
1309 rqst[0].rq_iov = open_iov;
1310 rqst[0].rq_nvec = SMB2_CREATE_IOV_SIZE;
1312 memset(&oparms, 0, sizeof(oparms));
1314 oparms.desired_access = FILE_WRITE_EA;
1315 oparms.disposition = FILE_OPEN;
1316 oparms.create_options = cifs_create_options(cifs_sb, 0);
1318 oparms.reconnect = false;
1320 rc = SMB2_open_init(tcon, server,
1321 &rqst[0], &oplock, &oparms, utf16_path);
1324 smb2_set_next_command(tcon, &rqst[0]);
1328 memset(&si_iov, 0, sizeof(si_iov));
1329 rqst[1].rq_iov = si_iov;
1330 rqst[1].rq_nvec = 1;
1332 len = sizeof(*ea) + ea_name_len + ea_value_len + 1;
1333 ea = kzalloc(len, GFP_KERNEL);
1339 ea->ea_name_length = ea_name_len;
1340 ea->ea_value_length = cpu_to_le16(ea_value_len);
1341 memcpy(ea->ea_data, ea_name, ea_name_len + 1);
1342 memcpy(ea->ea_data + ea_name_len + 1, ea_value, ea_value_len);
1347 rc = SMB2_set_info_init(tcon, server,
1348 &rqst[1], COMPOUND_FID,
1349 COMPOUND_FID, current->tgid,
1350 FILE_FULL_EA_INFORMATION,
1351 SMB2_O_INFO_FILE, 0, data, size);
1352 smb2_set_next_command(tcon, &rqst[1]);
1353 smb2_set_related(&rqst[1]);
1357 memset(&close_iov, 0, sizeof(close_iov));
1358 rqst[2].rq_iov = close_iov;
1359 rqst[2].rq_nvec = 1;
1360 rc = SMB2_close_init(tcon, server,
1361 &rqst[2], COMPOUND_FID, COMPOUND_FID, false);
1362 smb2_set_related(&rqst[2]);
1364 rc = compound_send_recv(xid, ses, server,
1366 resp_buftype, rsp_iov);
1367 /* no need to bump num_remote_opens because handle immediately closed */
1372 SMB2_open_free(&rqst[0]);
1373 SMB2_set_info_free(&rqst[1]);
1374 SMB2_close_free(&rqst[2]);
1375 free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base);
1376 free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base);
1377 free_rsp_buf(resp_buftype[2], rsp_iov[2].iov_base);
1383 smb2_can_echo(struct TCP_Server_Info *server)
1385 return server->echoes;
1389 smb2_clear_stats(struct cifs_tcon *tcon)
1393 for (i = 0; i < NUMBER_OF_SMB2_COMMANDS; i++) {
1394 atomic_set(&tcon->stats.smb2_stats.smb2_com_sent[i], 0);
1395 atomic_set(&tcon->stats.smb2_stats.smb2_com_failed[i], 0);
1400 smb2_dump_share_caps(struct seq_file *m, struct cifs_tcon *tcon)
1402 seq_puts(m, "\n\tShare Capabilities:");
1403 if (tcon->capabilities & SMB2_SHARE_CAP_DFS)
1404 seq_puts(m, " DFS,");
1405 if (tcon->capabilities & SMB2_SHARE_CAP_CONTINUOUS_AVAILABILITY)
1406 seq_puts(m, " CONTINUOUS AVAILABILITY,");
1407 if (tcon->capabilities & SMB2_SHARE_CAP_SCALEOUT)
1408 seq_puts(m, " SCALEOUT,");
1409 if (tcon->capabilities & SMB2_SHARE_CAP_CLUSTER)
1410 seq_puts(m, " CLUSTER,");
1411 if (tcon->capabilities & SMB2_SHARE_CAP_ASYMMETRIC)
1412 seq_puts(m, " ASYMMETRIC,");
1413 if (tcon->capabilities == 0)
1414 seq_puts(m, " None");
1415 if (tcon->ss_flags & SSINFO_FLAGS_ALIGNED_DEVICE)
1416 seq_puts(m, " Aligned,");
1417 if (tcon->ss_flags & SSINFO_FLAGS_PARTITION_ALIGNED_ON_DEVICE)
1418 seq_puts(m, " Partition Aligned,");
1419 if (tcon->ss_flags & SSINFO_FLAGS_NO_SEEK_PENALTY)
1420 seq_puts(m, " SSD,");
1421 if (tcon->ss_flags & SSINFO_FLAGS_TRIM_ENABLED)
1422 seq_puts(m, " TRIM-support,");
1424 seq_printf(m, "\tShare Flags: 0x%x", tcon->share_flags);
1425 seq_printf(m, "\n\ttid: 0x%x", tcon->tid);
1426 if (tcon->perf_sector_size)
1427 seq_printf(m, "\tOptimal sector size: 0x%x",
1428 tcon->perf_sector_size);
1429 seq_printf(m, "\tMaximal Access: 0x%x", tcon->maximal_access);
1433 smb2_print_stats(struct seq_file *m, struct cifs_tcon *tcon)
1435 atomic_t *sent = tcon->stats.smb2_stats.smb2_com_sent;
1436 atomic_t *failed = tcon->stats.smb2_stats.smb2_com_failed;
1439 * Can't display SMB2_NEGOTIATE, SESSION_SETUP, LOGOFF, CANCEL and ECHO
1440 * totals (requests sent) since those SMBs are per-session not per tcon
1442 seq_printf(m, "\nBytes read: %llu Bytes written: %llu",
1443 (long long)(tcon->bytes_read),
1444 (long long)(tcon->bytes_written));
1445 seq_printf(m, "\nOpen files: %d total (local), %d open on server",
1446 atomic_read(&tcon->num_local_opens),
1447 atomic_read(&tcon->num_remote_opens));
1448 seq_printf(m, "\nTreeConnects: %d total %d failed",
1449 atomic_read(&sent[SMB2_TREE_CONNECT_HE]),
1450 atomic_read(&failed[SMB2_TREE_CONNECT_HE]));
1451 seq_printf(m, "\nTreeDisconnects: %d total %d failed",
1452 atomic_read(&sent[SMB2_TREE_DISCONNECT_HE]),
1453 atomic_read(&failed[SMB2_TREE_DISCONNECT_HE]));
1454 seq_printf(m, "\nCreates: %d total %d failed",
1455 atomic_read(&sent[SMB2_CREATE_HE]),
1456 atomic_read(&failed[SMB2_CREATE_HE]));
1457 seq_printf(m, "\nCloses: %d total %d failed",
1458 atomic_read(&sent[SMB2_CLOSE_HE]),
1459 atomic_read(&failed[SMB2_CLOSE_HE]));
1460 seq_printf(m, "\nFlushes: %d total %d failed",
1461 atomic_read(&sent[SMB2_FLUSH_HE]),
1462 atomic_read(&failed[SMB2_FLUSH_HE]));
1463 seq_printf(m, "\nReads: %d total %d failed",
1464 atomic_read(&sent[SMB2_READ_HE]),
1465 atomic_read(&failed[SMB2_READ_HE]));
1466 seq_printf(m, "\nWrites: %d total %d failed",
1467 atomic_read(&sent[SMB2_WRITE_HE]),
1468 atomic_read(&failed[SMB2_WRITE_HE]));
1469 seq_printf(m, "\nLocks: %d total %d failed",
1470 atomic_read(&sent[SMB2_LOCK_HE]),
1471 atomic_read(&failed[SMB2_LOCK_HE]));
1472 seq_printf(m, "\nIOCTLs: %d total %d failed",
1473 atomic_read(&sent[SMB2_IOCTL_HE]),
1474 atomic_read(&failed[SMB2_IOCTL_HE]));
1475 seq_printf(m, "\nQueryDirectories: %d total %d failed",
1476 atomic_read(&sent[SMB2_QUERY_DIRECTORY_HE]),
1477 atomic_read(&failed[SMB2_QUERY_DIRECTORY_HE]));
1478 seq_printf(m, "\nChangeNotifies: %d total %d failed",
1479 atomic_read(&sent[SMB2_CHANGE_NOTIFY_HE]),
1480 atomic_read(&failed[SMB2_CHANGE_NOTIFY_HE]));
1481 seq_printf(m, "\nQueryInfos: %d total %d failed",
1482 atomic_read(&sent[SMB2_QUERY_INFO_HE]),
1483 atomic_read(&failed[SMB2_QUERY_INFO_HE]));
1484 seq_printf(m, "\nSetInfos: %d total %d failed",
1485 atomic_read(&sent[SMB2_SET_INFO_HE]),
1486 atomic_read(&failed[SMB2_SET_INFO_HE]));
1487 seq_printf(m, "\nOplockBreaks: %d sent %d failed",
1488 atomic_read(&sent[SMB2_OPLOCK_BREAK_HE]),
1489 atomic_read(&failed[SMB2_OPLOCK_BREAK_HE]));
1493 smb2_set_fid(struct cifsFileInfo *cfile, struct cifs_fid *fid, __u32 oplock)
1495 struct cifsInodeInfo *cinode = CIFS_I(d_inode(cfile->dentry));
1496 struct TCP_Server_Info *server = tlink_tcon(cfile->tlink)->ses->server;
1498 cfile->fid.persistent_fid = fid->persistent_fid;
1499 cfile->fid.volatile_fid = fid->volatile_fid;
1500 cfile->fid.access = fid->access;
1501 #ifdef CONFIG_CIFS_DEBUG2
1502 cfile->fid.mid = fid->mid;
1503 #endif /* CIFS_DEBUG2 */
1504 server->ops->set_oplock_level(cinode, oplock, fid->epoch,
1506 cinode->can_cache_brlcks = CIFS_CACHE_WRITE(cinode);
1507 memcpy(cfile->fid.create_guid, fid->create_guid, 16);
1511 smb2_close_file(const unsigned int xid, struct cifs_tcon *tcon,
1512 struct cifs_fid *fid)
1514 SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
1518 smb2_close_getattr(const unsigned int xid, struct cifs_tcon *tcon,
1519 struct cifsFileInfo *cfile)
1521 struct smb2_file_network_open_info file_inf;
1522 struct inode *inode;
1525 rc = __SMB2_close(xid, tcon, cfile->fid.persistent_fid,
1526 cfile->fid.volatile_fid, &file_inf);
1530 inode = d_inode(cfile->dentry);
1532 spin_lock(&inode->i_lock);
1533 CIFS_I(inode)->time = jiffies;
1535 /* Creation time should not need to be updated on close */
1536 if (file_inf.LastWriteTime)
1537 inode->i_mtime = cifs_NTtimeToUnix(file_inf.LastWriteTime);
1538 if (file_inf.ChangeTime)
1539 inode->i_ctime = cifs_NTtimeToUnix(file_inf.ChangeTime);
1540 if (file_inf.LastAccessTime)
1541 inode->i_atime = cifs_NTtimeToUnix(file_inf.LastAccessTime);
1544 * i_blocks is not related to (i_size / i_blksize),
1545 * but instead 512 byte (2**9) size is required for
1546 * calculating num blocks.
1548 if (le64_to_cpu(file_inf.AllocationSize) > 4096)
1550 (512 - 1 + le64_to_cpu(file_inf.AllocationSize)) >> 9;
1552 /* End of file and Attributes should not have to be updated on close */
1553 spin_unlock(&inode->i_lock);
1557 SMB2_request_res_key(const unsigned int xid, struct cifs_tcon *tcon,
1558 u64 persistent_fid, u64 volatile_fid,
1559 struct copychunk_ioctl *pcchunk)
1562 unsigned int ret_data_len;
1563 struct resume_key_req *res_key;
1565 rc = SMB2_ioctl(xid, tcon, persistent_fid, volatile_fid,
1566 FSCTL_SRV_REQUEST_RESUME_KEY, true /* is_fsctl */,
1567 NULL, 0 /* no input */, CIFSMaxBufSize,
1568 (char **)&res_key, &ret_data_len);
1570 if (rc == -EOPNOTSUPP) {
1571 pr_warn_once("Server share %s does not support copy range\n", tcon->treeName);
1572 goto req_res_key_exit;
1574 cifs_tcon_dbg(VFS, "refcpy ioctl error %d getting resume key\n", rc);
1575 goto req_res_key_exit;
1577 if (ret_data_len < sizeof(struct resume_key_req)) {
1578 cifs_tcon_dbg(VFS, "Invalid refcopy resume key length\n");
1580 goto req_res_key_exit;
1582 memcpy(pcchunk->SourceKey, res_key->ResumeKey, COPY_CHUNK_RES_KEY_SIZE);
1590 struct smb_rqst rqst[3];
1591 struct kvec rsp_iov[3];
1592 struct kvec open_iov[SMB2_CREATE_IOV_SIZE];
1593 struct kvec qi_iov[1];
1594 struct kvec io_iov[SMB2_IOCTL_IOV_SIZE];
1595 struct kvec si_iov[SMB2_SET_INFO_IOV_SIZE];
1596 struct kvec close_iov[1];
1600 smb2_ioctl_query_info(const unsigned int xid,
1601 struct cifs_tcon *tcon,
1602 struct cifs_sb_info *cifs_sb,
1603 __le16 *path, int is_dir,
1606 struct iqi_vars *vars;
1607 struct smb_rqst *rqst;
1608 struct kvec *rsp_iov;
1609 struct cifs_ses *ses = tcon->ses;
1610 struct TCP_Server_Info *server = cifs_pick_channel(ses);
1611 char __user *arg = (char __user *)p;
1612 struct smb_query_info qi;
1613 struct smb_query_info __user *pqi;
1615 int flags = CIFS_CP_CREATE_CLOSE_OP;
1616 struct smb2_query_info_rsp *qi_rsp = NULL;
1617 struct smb2_ioctl_rsp *io_rsp = NULL;
1618 void *buffer = NULL;
1619 int resp_buftype[3];
1620 struct cifs_open_parms oparms;
1621 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
1622 struct cifs_fid fid;
1623 unsigned int size[2];
1625 int create_options = is_dir ? CREATE_NOT_FILE : CREATE_NOT_DIR;
1627 vars = kzalloc(sizeof(*vars), GFP_ATOMIC);
1630 rqst = &vars->rqst[0];
1631 rsp_iov = &vars->rsp_iov[0];
1633 resp_buftype[0] = resp_buftype[1] = resp_buftype[2] = CIFS_NO_BUFFER;
1635 if (copy_from_user(&qi, arg, sizeof(struct smb_query_info)))
1638 if (qi.output_buffer_length > 1024) {
1643 if (!ses || !server) {
1648 if (smb3_encryption_required(tcon))
1649 flags |= CIFS_TRANSFORM_REQ;
1651 buffer = memdup_user(arg + sizeof(struct smb_query_info),
1652 qi.output_buffer_length);
1653 if (IS_ERR(buffer)) {
1655 return PTR_ERR(buffer);
1659 rqst[0].rq_iov = &vars->open_iov[0];
1660 rqst[0].rq_nvec = SMB2_CREATE_IOV_SIZE;
1662 memset(&oparms, 0, sizeof(oparms));
1664 oparms.disposition = FILE_OPEN;
1665 oparms.create_options = cifs_create_options(cifs_sb, create_options);
1667 oparms.reconnect = false;
1669 if (qi.flags & PASSTHRU_FSCTL) {
1670 switch (qi.info_type & FSCTL_DEVICE_ACCESS_MASK) {
1671 case FSCTL_DEVICE_ACCESS_FILE_READ_WRITE_ACCESS:
1672 oparms.desired_access = FILE_READ_DATA | FILE_WRITE_DATA | FILE_READ_ATTRIBUTES | SYNCHRONIZE;
1674 case FSCTL_DEVICE_ACCESS_FILE_ANY_ACCESS:
1675 oparms.desired_access = GENERIC_ALL;
1677 case FSCTL_DEVICE_ACCESS_FILE_READ_ACCESS:
1678 oparms.desired_access = GENERIC_READ;
1680 case FSCTL_DEVICE_ACCESS_FILE_WRITE_ACCESS:
1681 oparms.desired_access = GENERIC_WRITE;
1684 } else if (qi.flags & PASSTHRU_SET_INFO) {
1685 oparms.desired_access = GENERIC_WRITE;
1687 oparms.desired_access = FILE_READ_ATTRIBUTES | READ_CONTROL;
1690 rc = SMB2_open_init(tcon, server,
1691 &rqst[0], &oplock, &oparms, path);
1694 smb2_set_next_command(tcon, &rqst[0]);
1697 if (qi.flags & PASSTHRU_FSCTL) {
1698 /* Can eventually relax perm check since server enforces too */
1699 if (!capable(CAP_SYS_ADMIN))
1702 rqst[1].rq_iov = &vars->io_iov[0];
1703 rqst[1].rq_nvec = SMB2_IOCTL_IOV_SIZE;
1705 rc = SMB2_ioctl_init(tcon, server,
1707 COMPOUND_FID, COMPOUND_FID,
1708 qi.info_type, true, buffer,
1709 qi.output_buffer_length,
1711 MAX_SMB2_CREATE_RESPONSE_SIZE -
1712 MAX_SMB2_CLOSE_RESPONSE_SIZE);
1714 } else if (qi.flags == PASSTHRU_SET_INFO) {
1715 /* Can eventually relax perm check since server enforces too */
1716 if (!capable(CAP_SYS_ADMIN))
1719 rqst[1].rq_iov = &vars->si_iov[0];
1720 rqst[1].rq_nvec = 1;
1725 rc = SMB2_set_info_init(tcon, server,
1727 COMPOUND_FID, COMPOUND_FID,
1729 FILE_END_OF_FILE_INFORMATION,
1730 SMB2_O_INFO_FILE, 0, data, size);
1732 } else if (qi.flags == PASSTHRU_QUERY_INFO) {
1733 rqst[1].rq_iov = &vars->qi_iov[0];
1734 rqst[1].rq_nvec = 1;
1736 rc = SMB2_query_info_init(tcon, server,
1737 &rqst[1], COMPOUND_FID,
1738 COMPOUND_FID, qi.file_info_class,
1739 qi.info_type, qi.additional_information,
1740 qi.input_buffer_length,
1741 qi.output_buffer_length, buffer);
1742 } else { /* unknown flags */
1743 cifs_tcon_dbg(VFS, "Invalid passthru query flags: 0x%x\n",
1750 smb2_set_next_command(tcon, &rqst[1]);
1751 smb2_set_related(&rqst[1]);
1754 rqst[2].rq_iov = &vars->close_iov[0];
1755 rqst[2].rq_nvec = 1;
1757 rc = SMB2_close_init(tcon, server,
1758 &rqst[2], COMPOUND_FID, COMPOUND_FID, false);
1761 smb2_set_related(&rqst[2]);
1763 rc = compound_send_recv(xid, ses, server,
1765 resp_buftype, rsp_iov);
1769 /* No need to bump num_remote_opens since handle immediately closed */
1770 if (qi.flags & PASSTHRU_FSCTL) {
1771 pqi = (struct smb_query_info __user *)arg;
1772 io_rsp = (struct smb2_ioctl_rsp *)rsp_iov[1].iov_base;
1773 if (le32_to_cpu(io_rsp->OutputCount) < qi.input_buffer_length)
1774 qi.input_buffer_length = le32_to_cpu(io_rsp->OutputCount);
1775 if (qi.input_buffer_length > 0 &&
1776 le32_to_cpu(io_rsp->OutputOffset) + qi.input_buffer_length
1777 > rsp_iov[1].iov_len)
1780 if (copy_to_user(&pqi->input_buffer_length,
1781 &qi.input_buffer_length,
1782 sizeof(qi.input_buffer_length)))
1785 if (copy_to_user((void __user *)pqi + sizeof(struct smb_query_info),
1786 (const void *)io_rsp + le32_to_cpu(io_rsp->OutputOffset),
1787 qi.input_buffer_length))
1790 pqi = (struct smb_query_info __user *)arg;
1791 qi_rsp = (struct smb2_query_info_rsp *)rsp_iov[1].iov_base;
1792 if (le32_to_cpu(qi_rsp->OutputBufferLength) < qi.input_buffer_length)
1793 qi.input_buffer_length = le32_to_cpu(qi_rsp->OutputBufferLength);
1794 if (copy_to_user(&pqi->input_buffer_length,
1795 &qi.input_buffer_length,
1796 sizeof(qi.input_buffer_length)))
1799 if (copy_to_user(pqi + 1, qi_rsp->Buffer,
1800 qi.input_buffer_length))
1805 cifs_small_buf_release(rqst[0].rq_iov[0].iov_base);
1806 cifs_small_buf_release(rqst[1].rq_iov[0].iov_base);
1807 cifs_small_buf_release(rqst[2].rq_iov[0].iov_base);
1808 free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base);
1809 free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base);
1810 free_rsp_buf(resp_buftype[2], rsp_iov[2].iov_base);
1821 smb2_copychunk_range(const unsigned int xid,
1822 struct cifsFileInfo *srcfile,
1823 struct cifsFileInfo *trgtfile, u64 src_off,
1824 u64 len, u64 dest_off)
1827 unsigned int ret_data_len;
1828 struct copychunk_ioctl *pcchunk;
1829 struct copychunk_ioctl_rsp *retbuf = NULL;
1830 struct cifs_tcon *tcon;
1831 int chunks_copied = 0;
1832 bool chunk_sizes_updated = false;
1833 ssize_t bytes_written, total_bytes_written = 0;
1835 pcchunk = kmalloc(sizeof(struct copychunk_ioctl), GFP_KERNEL);
1837 if (pcchunk == NULL)
1840 cifs_dbg(FYI, "%s: about to call request res key\n", __func__);
1841 /* Request a key from the server to identify the source of the copy */
1842 rc = SMB2_request_res_key(xid, tlink_tcon(srcfile->tlink),
1843 srcfile->fid.persistent_fid,
1844 srcfile->fid.volatile_fid, pcchunk);
1846 /* Note: request_res_key sets res_key null only if rc !=0 */
1850 /* For now array only one chunk long, will make more flexible later */
1851 pcchunk->ChunkCount = cpu_to_le32(1);
1852 pcchunk->Reserved = 0;
1853 pcchunk->Reserved2 = 0;
1855 tcon = tlink_tcon(trgtfile->tlink);
1858 pcchunk->SourceOffset = cpu_to_le64(src_off);
1859 pcchunk->TargetOffset = cpu_to_le64(dest_off);
1861 cpu_to_le32(min_t(u32, len, tcon->max_bytes_chunk));
1863 /* Request server copy to target from src identified by key */
1866 rc = SMB2_ioctl(xid, tcon, trgtfile->fid.persistent_fid,
1867 trgtfile->fid.volatile_fid, FSCTL_SRV_COPYCHUNK_WRITE,
1868 true /* is_fsctl */, (char *)pcchunk,
1869 sizeof(struct copychunk_ioctl), CIFSMaxBufSize,
1870 (char **)&retbuf, &ret_data_len);
1873 sizeof(struct copychunk_ioctl_rsp)) {
1874 cifs_tcon_dbg(VFS, "Invalid cchunk response size\n");
1878 if (retbuf->TotalBytesWritten == 0) {
1879 cifs_dbg(FYI, "no bytes copied\n");
1884 * Check if server claimed to write more than we asked
1886 if (le32_to_cpu(retbuf->TotalBytesWritten) >
1887 le32_to_cpu(pcchunk->Length)) {
1888 cifs_tcon_dbg(VFS, "Invalid copy chunk response\n");
1892 if (le32_to_cpu(retbuf->ChunksWritten) != 1) {
1893 cifs_tcon_dbg(VFS, "Invalid num chunks written\n");
1899 bytes_written = le32_to_cpu(retbuf->TotalBytesWritten);
1900 src_off += bytes_written;
1901 dest_off += bytes_written;
1902 len -= bytes_written;
1903 total_bytes_written += bytes_written;
1905 cifs_dbg(FYI, "Chunks %d PartialChunk %d Total %zu\n",
1906 le32_to_cpu(retbuf->ChunksWritten),
1907 le32_to_cpu(retbuf->ChunkBytesWritten),
1909 } else if (rc == -EINVAL) {
1910 if (ret_data_len != sizeof(struct copychunk_ioctl_rsp))
1913 cifs_dbg(FYI, "MaxChunks %d BytesChunk %d MaxCopy %d\n",
1914 le32_to_cpu(retbuf->ChunksWritten),
1915 le32_to_cpu(retbuf->ChunkBytesWritten),
1916 le32_to_cpu(retbuf->TotalBytesWritten));
1919 * Check if this is the first request using these sizes,
1920 * (ie check if copy succeed once with original sizes
1921 * and check if the server gave us different sizes after
1922 * we already updated max sizes on previous request).
1923 * if not then why is the server returning an error now
1925 if ((chunks_copied != 0) || chunk_sizes_updated)
1928 /* Check that server is not asking us to grow size */
1929 if (le32_to_cpu(retbuf->ChunkBytesWritten) <
1930 tcon->max_bytes_chunk)
1931 tcon->max_bytes_chunk =
1932 le32_to_cpu(retbuf->ChunkBytesWritten);
1934 goto cchunk_out; /* server gave us bogus size */
1936 /* No need to change MaxChunks since already set to 1 */
1937 chunk_sizes_updated = true;
1948 return total_bytes_written;
1952 smb2_flush_file(const unsigned int xid, struct cifs_tcon *tcon,
1953 struct cifs_fid *fid)
1955 return SMB2_flush(xid, tcon, fid->persistent_fid, fid->volatile_fid);
1959 smb2_read_data_offset(char *buf)
1961 struct smb2_read_rsp *rsp = (struct smb2_read_rsp *)buf;
1963 return rsp->DataOffset;
1967 smb2_read_data_length(char *buf, bool in_remaining)
1969 struct smb2_read_rsp *rsp = (struct smb2_read_rsp *)buf;
1972 return le32_to_cpu(rsp->DataRemaining);
1974 return le32_to_cpu(rsp->DataLength);
1979 smb2_sync_read(const unsigned int xid, struct cifs_fid *pfid,
1980 struct cifs_io_parms *parms, unsigned int *bytes_read,
1981 char **buf, int *buf_type)
1983 parms->persistent_fid = pfid->persistent_fid;
1984 parms->volatile_fid = pfid->volatile_fid;
1985 return SMB2_read(xid, parms, bytes_read, buf, buf_type);
1989 smb2_sync_write(const unsigned int xid, struct cifs_fid *pfid,
1990 struct cifs_io_parms *parms, unsigned int *written,
1991 struct kvec *iov, unsigned long nr_segs)
1994 parms->persistent_fid = pfid->persistent_fid;
1995 parms->volatile_fid = pfid->volatile_fid;
1996 return SMB2_write(xid, parms, written, iov, nr_segs);
1999 /* Set or clear the SPARSE_FILE attribute based on value passed in setsparse */
2000 static bool smb2_set_sparse(const unsigned int xid, struct cifs_tcon *tcon,
2001 struct cifsFileInfo *cfile, struct inode *inode, __u8 setsparse)
2003 struct cifsInodeInfo *cifsi;
2006 cifsi = CIFS_I(inode);
2008 /* if file already sparse don't bother setting sparse again */
2009 if ((cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) && setsparse)
2010 return true; /* already sparse */
2012 if (!(cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) && !setsparse)
2013 return true; /* already not sparse */
2016 * Can't check for sparse support on share the usual way via the
2017 * FS attribute info (FILE_SUPPORTS_SPARSE_FILES) on the share
2018 * since Samba server doesn't set the flag on the share, yet
2019 * supports the set sparse FSCTL and returns sparse correctly
2020 * in the file attributes. If we fail setting sparse though we
2021 * mark that server does not support sparse files for this share
2022 * to avoid repeatedly sending the unsupported fsctl to server
2023 * if the file is repeatedly extended.
2025 if (tcon->broken_sparse_sup)
2028 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
2029 cfile->fid.volatile_fid, FSCTL_SET_SPARSE,
2031 &setsparse, 1, CIFSMaxBufSize, NULL, NULL);
2033 tcon->broken_sparse_sup = true;
2034 cifs_dbg(FYI, "set sparse rc = %d\n", rc);
2039 cifsi->cifsAttrs |= FILE_ATTRIBUTE_SPARSE_FILE;
2041 cifsi->cifsAttrs &= (~FILE_ATTRIBUTE_SPARSE_FILE);
2047 smb2_set_file_size(const unsigned int xid, struct cifs_tcon *tcon,
2048 struct cifsFileInfo *cfile, __u64 size, bool set_alloc)
2050 __le64 eof = cpu_to_le64(size);
2051 struct inode *inode;
2054 * If extending file more than one page make sparse. Many Linux fs
2055 * make files sparse by default when extending via ftruncate
2057 inode = d_inode(cfile->dentry);
2059 if (!set_alloc && (size > inode->i_size + 8192)) {
2060 __u8 set_sparse = 1;
2062 /* whether set sparse succeeds or not, extend the file */
2063 smb2_set_sparse(xid, tcon, cfile, inode, set_sparse);
2066 return SMB2_set_eof(xid, tcon, cfile->fid.persistent_fid,
2067 cfile->fid.volatile_fid, cfile->pid, &eof);
2071 smb2_duplicate_extents(const unsigned int xid,
2072 struct cifsFileInfo *srcfile,
2073 struct cifsFileInfo *trgtfile, u64 src_off,
2074 u64 len, u64 dest_off)
2077 unsigned int ret_data_len;
2078 struct inode *inode;
2079 struct duplicate_extents_to_file dup_ext_buf;
2080 struct cifs_tcon *tcon = tlink_tcon(trgtfile->tlink);
2082 /* server fileays advertise duplicate extent support with this flag */
2083 if ((le32_to_cpu(tcon->fsAttrInfo.Attributes) &
2084 FILE_SUPPORTS_BLOCK_REFCOUNTING) == 0)
2087 dup_ext_buf.VolatileFileHandle = srcfile->fid.volatile_fid;
2088 dup_ext_buf.PersistentFileHandle = srcfile->fid.persistent_fid;
2089 dup_ext_buf.SourceFileOffset = cpu_to_le64(src_off);
2090 dup_ext_buf.TargetFileOffset = cpu_to_le64(dest_off);
2091 dup_ext_buf.ByteCount = cpu_to_le64(len);
2092 cifs_dbg(FYI, "Duplicate extents: src off %lld dst off %lld len %lld\n",
2093 src_off, dest_off, len);
2095 inode = d_inode(trgtfile->dentry);
2096 if (inode->i_size < dest_off + len) {
2097 rc = smb2_set_file_size(xid, tcon, trgtfile, dest_off + len, false);
2099 goto duplicate_extents_out;
2102 * Although also could set plausible allocation size (i_blocks)
2103 * here in addition to setting the file size, in reflink
2104 * it is likely that the target file is sparse. Its allocation
2105 * size will be queried on next revalidate, but it is important
2106 * to make sure that file's cached size is updated immediately
2108 cifs_setsize(inode, dest_off + len);
2110 rc = SMB2_ioctl(xid, tcon, trgtfile->fid.persistent_fid,
2111 trgtfile->fid.volatile_fid,
2112 FSCTL_DUPLICATE_EXTENTS_TO_FILE,
2113 true /* is_fsctl */,
2114 (char *)&dup_ext_buf,
2115 sizeof(struct duplicate_extents_to_file),
2116 CIFSMaxBufSize, NULL,
2119 if (ret_data_len > 0)
2120 cifs_dbg(FYI, "Non-zero response length in duplicate extents\n");
2122 duplicate_extents_out:
2127 smb2_set_compression(const unsigned int xid, struct cifs_tcon *tcon,
2128 struct cifsFileInfo *cfile)
2130 return SMB2_set_compression(xid, tcon, cfile->fid.persistent_fid,
2131 cfile->fid.volatile_fid);
2135 smb3_set_integrity(const unsigned int xid, struct cifs_tcon *tcon,
2136 struct cifsFileInfo *cfile)
2138 struct fsctl_set_integrity_information_req integr_info;
2139 unsigned int ret_data_len;
2141 integr_info.ChecksumAlgorithm = cpu_to_le16(CHECKSUM_TYPE_UNCHANGED);
2142 integr_info.Flags = 0;
2143 integr_info.Reserved = 0;
2145 return SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
2146 cfile->fid.volatile_fid,
2147 FSCTL_SET_INTEGRITY_INFORMATION,
2148 true /* is_fsctl */,
2149 (char *)&integr_info,
2150 sizeof(struct fsctl_set_integrity_information_req),
2151 CIFSMaxBufSize, NULL,
2156 /* GMT Token is @GMT-YYYY.MM.DD-HH.MM.SS Unicode which is 48 bytes + null */
2157 #define GMT_TOKEN_SIZE 50
2159 #define MIN_SNAPSHOT_ARRAY_SIZE 16 /* See MS-SMB2 section 3.3.5.15.1 */
2162 * Input buffer contains (empty) struct smb_snapshot array with size filled in
2163 * For output see struct SRV_SNAPSHOT_ARRAY in MS-SMB2 section 2.2.32.2
2166 smb3_enum_snapshots(const unsigned int xid, struct cifs_tcon *tcon,
2167 struct cifsFileInfo *cfile, void __user *ioc_buf)
2169 char *retbuf = NULL;
2170 unsigned int ret_data_len = 0;
2172 u32 max_response_size;
2173 struct smb_snapshot_array snapshot_in;
2176 * On the first query to enumerate the list of snapshots available
2177 * for this volume the buffer begins with 0 (number of snapshots
2178 * which can be returned is zero since at that point we do not know
2179 * how big the buffer needs to be). On the second query,
2180 * it (ret_data_len) is set to number of snapshots so we can
2181 * know to set the maximum response size larger (see below).
2183 if (get_user(ret_data_len, (unsigned int __user *)ioc_buf))
2187 * Note that for snapshot queries that servers like Azure expect that
2188 * the first query be minimal size (and just used to get the number/size
2189 * of previous versions) so response size must be specified as EXACTLY
2190 * sizeof(struct snapshot_array) which is 16 when rounded up to multiple
2193 if (ret_data_len == 0)
2194 max_response_size = MIN_SNAPSHOT_ARRAY_SIZE;
2196 max_response_size = CIFSMaxBufSize;
2198 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
2199 cfile->fid.volatile_fid,
2200 FSCTL_SRV_ENUMERATE_SNAPSHOTS,
2201 true /* is_fsctl */,
2202 NULL, 0 /* no input data */, max_response_size,
2205 cifs_dbg(FYI, "enum snaphots ioctl returned %d and ret buflen is %d\n",
2210 if (ret_data_len && (ioc_buf != NULL) && (retbuf != NULL)) {
2212 if (copy_from_user(&snapshot_in, ioc_buf,
2213 sizeof(struct smb_snapshot_array))) {
2220 * Check for min size, ie not large enough to fit even one GMT
2221 * token (snapshot). On the first ioctl some users may pass in
2222 * smaller size (or zero) to simply get the size of the array
2223 * so the user space caller can allocate sufficient memory
2224 * and retry the ioctl again with larger array size sufficient
2225 * to hold all of the snapshot GMT tokens on the second try.
2227 if (snapshot_in.snapshot_array_size < GMT_TOKEN_SIZE)
2228 ret_data_len = sizeof(struct smb_snapshot_array);
2231 * We return struct SRV_SNAPSHOT_ARRAY, followed by
2232 * the snapshot array (of 50 byte GMT tokens) each
2233 * representing an available previous version of the data
2235 if (ret_data_len > (snapshot_in.snapshot_array_size +
2236 sizeof(struct smb_snapshot_array)))
2237 ret_data_len = snapshot_in.snapshot_array_size +
2238 sizeof(struct smb_snapshot_array);
2240 if (copy_to_user(ioc_buf, retbuf, ret_data_len))
2251 smb3_notify(const unsigned int xid, struct file *pfile,
2252 void __user *ioc_buf)
2254 struct smb3_notify notify;
2255 struct dentry *dentry = pfile->f_path.dentry;
2256 struct inode *inode = file_inode(pfile);
2257 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
2258 struct cifs_open_parms oparms;
2259 struct cifs_fid fid;
2260 struct cifs_tcon *tcon;
2261 const unsigned char *path;
2262 void *page = alloc_dentry_path();
2263 __le16 *utf16_path = NULL;
2264 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
2267 path = build_path_from_dentry(dentry, page);
2273 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
2274 if (utf16_path == NULL) {
2279 if (copy_from_user(¬ify, ioc_buf, sizeof(struct smb3_notify))) {
2284 tcon = cifs_sb_master_tcon(cifs_sb);
2286 oparms.desired_access = FILE_READ_ATTRIBUTES | FILE_READ_DATA;
2287 oparms.disposition = FILE_OPEN;
2288 oparms.create_options = cifs_create_options(cifs_sb, 0);
2290 oparms.reconnect = false;
2292 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL, NULL,
2297 rc = SMB2_change_notify(xid, tcon, fid.persistent_fid, fid.volatile_fid,
2298 notify.watch_tree, notify.completion_filter);
2300 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
2302 cifs_dbg(FYI, "change notify for path %s rc %d\n", path, rc);
2305 free_dentry_path(page);
2311 smb2_query_dir_first(const unsigned int xid, struct cifs_tcon *tcon,
2312 const char *path, struct cifs_sb_info *cifs_sb,
2313 struct cifs_fid *fid, __u16 search_flags,
2314 struct cifs_search_info *srch_inf)
2317 struct smb_rqst rqst[2];
2318 struct kvec rsp_iov[2];
2319 int resp_buftype[2];
2320 struct kvec open_iov[SMB2_CREATE_IOV_SIZE];
2321 struct kvec qd_iov[SMB2_QUERY_DIRECTORY_IOV_SIZE];
2323 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
2324 struct cifs_open_parms oparms;
2325 struct smb2_query_directory_rsp *qd_rsp = NULL;
2326 struct smb2_create_rsp *op_rsp = NULL;
2327 struct TCP_Server_Info *server = cifs_pick_channel(tcon->ses);
2329 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
2333 if (smb3_encryption_required(tcon))
2334 flags |= CIFS_TRANSFORM_REQ;
2336 memset(rqst, 0, sizeof(rqst));
2337 resp_buftype[0] = resp_buftype[1] = CIFS_NO_BUFFER;
2338 memset(rsp_iov, 0, sizeof(rsp_iov));
2341 memset(&open_iov, 0, sizeof(open_iov));
2342 rqst[0].rq_iov = open_iov;
2343 rqst[0].rq_nvec = SMB2_CREATE_IOV_SIZE;
2346 oparms.desired_access = FILE_READ_ATTRIBUTES | FILE_READ_DATA;
2347 oparms.disposition = FILE_OPEN;
2348 oparms.create_options = cifs_create_options(cifs_sb, 0);
2350 oparms.reconnect = false;
2352 rc = SMB2_open_init(tcon, server,
2353 &rqst[0], &oplock, &oparms, utf16_path);
2356 smb2_set_next_command(tcon, &rqst[0]);
2358 /* Query directory */
2359 srch_inf->entries_in_buffer = 0;
2360 srch_inf->index_of_last_entry = 2;
2362 memset(&qd_iov, 0, sizeof(qd_iov));
2363 rqst[1].rq_iov = qd_iov;
2364 rqst[1].rq_nvec = SMB2_QUERY_DIRECTORY_IOV_SIZE;
2366 rc = SMB2_query_directory_init(xid, tcon, server,
2368 COMPOUND_FID, COMPOUND_FID,
2369 0, srch_inf->info_level);
2373 smb2_set_related(&rqst[1]);
2375 rc = compound_send_recv(xid, tcon->ses, server,
2377 resp_buftype, rsp_iov);
2379 /* If the open failed there is nothing to do */
2380 op_rsp = (struct smb2_create_rsp *)rsp_iov[0].iov_base;
2381 if (op_rsp == NULL || op_rsp->sync_hdr.Status != STATUS_SUCCESS) {
2382 cifs_dbg(FYI, "query_dir_first: open failed rc=%d\n", rc);
2385 fid->persistent_fid = op_rsp->PersistentFileId;
2386 fid->volatile_fid = op_rsp->VolatileFileId;
2388 /* Anything else than ENODATA means a genuine error */
2389 if (rc && rc != -ENODATA) {
2390 SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
2391 cifs_dbg(FYI, "query_dir_first: query directory failed rc=%d\n", rc);
2392 trace_smb3_query_dir_err(xid, fid->persistent_fid,
2393 tcon->tid, tcon->ses->Suid, 0, 0, rc);
2397 atomic_inc(&tcon->num_remote_opens);
2399 qd_rsp = (struct smb2_query_directory_rsp *)rsp_iov[1].iov_base;
2400 if (qd_rsp->sync_hdr.Status == STATUS_NO_MORE_FILES) {
2401 trace_smb3_query_dir_done(xid, fid->persistent_fid,
2402 tcon->tid, tcon->ses->Suid, 0, 0);
2403 srch_inf->endOfSearch = true;
2408 rc = smb2_parse_query_directory(tcon, &rsp_iov[1], resp_buftype[1],
2411 trace_smb3_query_dir_err(xid, fid->persistent_fid, tcon->tid,
2412 tcon->ses->Suid, 0, 0, rc);
2415 resp_buftype[1] = CIFS_NO_BUFFER;
2417 trace_smb3_query_dir_done(xid, fid->persistent_fid, tcon->tid,
2418 tcon->ses->Suid, 0, srch_inf->entries_in_buffer);
2422 SMB2_open_free(&rqst[0]);
2423 SMB2_query_directory_free(&rqst[1]);
2424 free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base);
2425 free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base);
2430 smb2_query_dir_next(const unsigned int xid, struct cifs_tcon *tcon,
2431 struct cifs_fid *fid, __u16 search_flags,
2432 struct cifs_search_info *srch_inf)
2434 return SMB2_query_directory(xid, tcon, fid->persistent_fid,
2435 fid->volatile_fid, 0, srch_inf);
2439 smb2_close_dir(const unsigned int xid, struct cifs_tcon *tcon,
2440 struct cifs_fid *fid)
2442 return SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
2446 * If we negotiate SMB2 protocol and get STATUS_PENDING - update
2447 * the number of credits and return true. Otherwise - return false.
2450 smb2_is_status_pending(char *buf, struct TCP_Server_Info *server)
2452 struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)buf;
2453 int scredits, in_flight;
2455 if (shdr->Status != STATUS_PENDING)
2458 if (shdr->CreditRequest) {
2459 spin_lock(&server->req_lock);
2460 server->credits += le16_to_cpu(shdr->CreditRequest);
2461 scredits = server->credits;
2462 in_flight = server->in_flight;
2463 spin_unlock(&server->req_lock);
2464 wake_up(&server->request_q);
2466 trace_smb3_add_credits(server->CurrentMid,
2467 server->conn_id, server->hostname, scredits,
2468 le16_to_cpu(shdr->CreditRequest), in_flight);
2469 cifs_dbg(FYI, "%s: status pending add %u credits total=%d\n",
2470 __func__, le16_to_cpu(shdr->CreditRequest), scredits);
2477 smb2_is_session_expired(char *buf)
2479 struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)buf;
2481 if (shdr->Status != STATUS_NETWORK_SESSION_EXPIRED &&
2482 shdr->Status != STATUS_USER_SESSION_DELETED)
2485 trace_smb3_ses_expired(shdr->TreeId, shdr->SessionId,
2486 le16_to_cpu(shdr->Command),
2487 le64_to_cpu(shdr->MessageId));
2488 cifs_dbg(FYI, "Session expired or deleted\n");
2494 smb2_is_status_io_timeout(char *buf)
2496 struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)buf;
2498 if (shdr->Status == STATUS_IO_TIMEOUT)
2505 smb2_is_network_name_deleted(char *buf, struct TCP_Server_Info *server)
2507 struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)buf;
2508 struct list_head *tmp, *tmp1;
2509 struct cifs_ses *ses;
2510 struct cifs_tcon *tcon;
2512 if (shdr->Status != STATUS_NETWORK_NAME_DELETED)
2515 spin_lock(&cifs_tcp_ses_lock);
2516 list_for_each(tmp, &server->smb_ses_list) {
2517 ses = list_entry(tmp, struct cifs_ses, smb_ses_list);
2518 list_for_each(tmp1, &ses->tcon_list) {
2519 tcon = list_entry(tmp1, struct cifs_tcon, tcon_list);
2520 if (tcon->tid == shdr->TreeId) {
2521 tcon->need_reconnect = true;
2522 spin_unlock(&cifs_tcp_ses_lock);
2523 pr_warn_once("Server share %s deleted.\n",
2529 spin_unlock(&cifs_tcp_ses_lock);
2533 smb2_oplock_response(struct cifs_tcon *tcon, struct cifs_fid *fid,
2534 struct cifsInodeInfo *cinode)
2536 if (tcon->ses->server->capabilities & SMB2_GLOBAL_CAP_LEASING)
2537 return SMB2_lease_break(0, tcon, cinode->lease_key,
2538 smb2_get_lease_state(cinode));
2540 return SMB2_oplock_break(0, tcon, fid->persistent_fid,
2542 CIFS_CACHE_READ(cinode) ? 1 : 0);
2546 smb2_set_related(struct smb_rqst *rqst)
2548 struct smb2_sync_hdr *shdr;
2550 shdr = (struct smb2_sync_hdr *)(rqst->rq_iov[0].iov_base);
2552 cifs_dbg(FYI, "shdr NULL in smb2_set_related\n");
2555 shdr->Flags |= SMB2_FLAGS_RELATED_OPERATIONS;
2558 char smb2_padding[7] = {0, 0, 0, 0, 0, 0, 0};
2561 smb2_set_next_command(struct cifs_tcon *tcon, struct smb_rqst *rqst)
2563 struct smb2_sync_hdr *shdr;
2564 struct cifs_ses *ses = tcon->ses;
2565 struct TCP_Server_Info *server = ses->server;
2566 unsigned long len = smb_rqst_len(server, rqst);
2569 shdr = (struct smb2_sync_hdr *)(rqst->rq_iov[0].iov_base);
2571 cifs_dbg(FYI, "shdr NULL in smb2_set_next_command\n");
2575 /* SMB headers in a compound are 8 byte aligned. */
2577 /* No padding needed */
2581 num_padding = 8 - (len & 7);
2582 if (!smb3_encryption_required(tcon)) {
2584 * If we do not have encryption then we can just add an extra
2585 * iov for the padding.
2587 rqst->rq_iov[rqst->rq_nvec].iov_base = smb2_padding;
2588 rqst->rq_iov[rqst->rq_nvec].iov_len = num_padding;
2593 * We can not add a small padding iov for the encryption case
2594 * because the encryption framework can not handle the padding
2596 * We have to flatten this into a single buffer and add
2597 * the padding to it.
2599 for (i = 1; i < rqst->rq_nvec; i++) {
2600 memcpy(rqst->rq_iov[0].iov_base +
2601 rqst->rq_iov[0].iov_len,
2602 rqst->rq_iov[i].iov_base,
2603 rqst->rq_iov[i].iov_len);
2604 rqst->rq_iov[0].iov_len += rqst->rq_iov[i].iov_len;
2606 memset(rqst->rq_iov[0].iov_base + rqst->rq_iov[0].iov_len,
2608 rqst->rq_iov[0].iov_len += num_padding;
2614 shdr->NextCommand = cpu_to_le32(len);
2618 * Passes the query info response back to the caller on success.
2619 * Caller need to free this with free_rsp_buf().
2622 smb2_query_info_compound(const unsigned int xid, struct cifs_tcon *tcon,
2623 __le16 *utf16_path, u32 desired_access,
2624 u32 class, u32 type, u32 output_len,
2625 struct kvec *rsp, int *buftype,
2626 struct cifs_sb_info *cifs_sb)
2628 struct cifs_ses *ses = tcon->ses;
2629 struct TCP_Server_Info *server = cifs_pick_channel(ses);
2630 int flags = CIFS_CP_CREATE_CLOSE_OP;
2631 struct smb_rqst rqst[3];
2632 int resp_buftype[3];
2633 struct kvec rsp_iov[3];
2634 struct kvec open_iov[SMB2_CREATE_IOV_SIZE];
2635 struct kvec qi_iov[1];
2636 struct kvec close_iov[1];
2637 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
2638 struct cifs_open_parms oparms;
2639 struct cifs_fid fid;
2642 if (smb3_encryption_required(tcon))
2643 flags |= CIFS_TRANSFORM_REQ;
2645 memset(rqst, 0, sizeof(rqst));
2646 resp_buftype[0] = resp_buftype[1] = resp_buftype[2] = CIFS_NO_BUFFER;
2647 memset(rsp_iov, 0, sizeof(rsp_iov));
2649 memset(&open_iov, 0, sizeof(open_iov));
2650 rqst[0].rq_iov = open_iov;
2651 rqst[0].rq_nvec = SMB2_CREATE_IOV_SIZE;
2654 oparms.desired_access = desired_access;
2655 oparms.disposition = FILE_OPEN;
2656 oparms.create_options = cifs_create_options(cifs_sb, 0);
2658 oparms.reconnect = false;
2660 rc = SMB2_open_init(tcon, server,
2661 &rqst[0], &oplock, &oparms, utf16_path);
2664 smb2_set_next_command(tcon, &rqst[0]);
2666 memset(&qi_iov, 0, sizeof(qi_iov));
2667 rqst[1].rq_iov = qi_iov;
2668 rqst[1].rq_nvec = 1;
2670 rc = SMB2_query_info_init(tcon, server,
2671 &rqst[1], COMPOUND_FID, COMPOUND_FID,
2677 smb2_set_next_command(tcon, &rqst[1]);
2678 smb2_set_related(&rqst[1]);
2680 memset(&close_iov, 0, sizeof(close_iov));
2681 rqst[2].rq_iov = close_iov;
2682 rqst[2].rq_nvec = 1;
2684 rc = SMB2_close_init(tcon, server,
2685 &rqst[2], COMPOUND_FID, COMPOUND_FID, false);
2688 smb2_set_related(&rqst[2]);
2690 rc = compound_send_recv(xid, ses, server,
2692 resp_buftype, rsp_iov);
2694 free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base);
2695 if (rc == -EREMCHG) {
2696 tcon->need_reconnect = true;
2697 pr_warn_once("server share %s deleted\n",
2703 *buftype = resp_buftype[1];
2706 SMB2_open_free(&rqst[0]);
2707 SMB2_query_info_free(&rqst[1]);
2708 SMB2_close_free(&rqst[2]);
2709 free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base);
2710 free_rsp_buf(resp_buftype[2], rsp_iov[2].iov_base);
2715 smb2_queryfs(const unsigned int xid, struct cifs_tcon *tcon,
2716 struct cifs_sb_info *cifs_sb, struct kstatfs *buf)
2718 struct smb2_query_info_rsp *rsp;
2719 struct smb2_fs_full_size_info *info = NULL;
2720 __le16 utf16_path = 0; /* Null - open root of share */
2721 struct kvec rsp_iov = {NULL, 0};
2722 int buftype = CIFS_NO_BUFFER;
2726 rc = smb2_query_info_compound(xid, tcon, &utf16_path,
2727 FILE_READ_ATTRIBUTES,
2728 FS_FULL_SIZE_INFORMATION,
2729 SMB2_O_INFO_FILESYSTEM,
2730 sizeof(struct smb2_fs_full_size_info),
2731 &rsp_iov, &buftype, cifs_sb);
2735 rsp = (struct smb2_query_info_rsp *)rsp_iov.iov_base;
2736 buf->f_type = SMB2_MAGIC_NUMBER;
2737 info = (struct smb2_fs_full_size_info *)(
2738 le16_to_cpu(rsp->OutputBufferOffset) + (char *)rsp);
2739 rc = smb2_validate_iov(le16_to_cpu(rsp->OutputBufferOffset),
2740 le32_to_cpu(rsp->OutputBufferLength),
2742 sizeof(struct smb2_fs_full_size_info));
2744 smb2_copy_fs_info_to_kstatfs(info, buf);
2747 free_rsp_buf(buftype, rsp_iov.iov_base);
2752 smb311_queryfs(const unsigned int xid, struct cifs_tcon *tcon,
2753 struct cifs_sb_info *cifs_sb, struct kstatfs *buf)
2756 __le16 srch_path = 0; /* Null - open root of share */
2757 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
2758 struct cifs_open_parms oparms;
2759 struct cifs_fid fid;
2761 if (!tcon->posix_extensions)
2762 return smb2_queryfs(xid, tcon, cifs_sb, buf);
2765 oparms.desired_access = FILE_READ_ATTRIBUTES;
2766 oparms.disposition = FILE_OPEN;
2767 oparms.create_options = cifs_create_options(cifs_sb, 0);
2769 oparms.reconnect = false;
2771 rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL,
2776 rc = SMB311_posix_qfs_info(xid, tcon, fid.persistent_fid,
2777 fid.volatile_fid, buf);
2778 buf->f_type = SMB2_MAGIC_NUMBER;
2779 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
2784 smb2_compare_fids(struct cifsFileInfo *ob1, struct cifsFileInfo *ob2)
2786 return ob1->fid.persistent_fid == ob2->fid.persistent_fid &&
2787 ob1->fid.volatile_fid == ob2->fid.volatile_fid;
2791 smb2_mand_lock(const unsigned int xid, struct cifsFileInfo *cfile, __u64 offset,
2792 __u64 length, __u32 type, int lock, int unlock, bool wait)
2794 if (unlock && !lock)
2795 type = SMB2_LOCKFLAG_UNLOCK;
2796 return SMB2_lock(xid, tlink_tcon(cfile->tlink),
2797 cfile->fid.persistent_fid, cfile->fid.volatile_fid,
2798 current->tgid, length, offset, type, wait);
2802 smb2_get_lease_key(struct inode *inode, struct cifs_fid *fid)
2804 memcpy(fid->lease_key, CIFS_I(inode)->lease_key, SMB2_LEASE_KEY_SIZE);
2808 smb2_set_lease_key(struct inode *inode, struct cifs_fid *fid)
2810 memcpy(CIFS_I(inode)->lease_key, fid->lease_key, SMB2_LEASE_KEY_SIZE);
2814 smb2_new_lease_key(struct cifs_fid *fid)
2816 generate_random_uuid(fid->lease_key);
2820 smb2_get_dfs_refer(const unsigned int xid, struct cifs_ses *ses,
2821 const char *search_name,
2822 struct dfs_info3_param **target_nodes,
2823 unsigned int *num_of_nodes,
2824 const struct nls_table *nls_codepage, int remap)
2827 __le16 *utf16_path = NULL;
2828 int utf16_path_len = 0;
2829 struct cifs_tcon *tcon;
2830 struct fsctl_get_dfs_referral_req *dfs_req = NULL;
2831 struct get_dfs_referral_rsp *dfs_rsp = NULL;
2832 u32 dfs_req_size = 0, dfs_rsp_size = 0;
2834 cifs_dbg(FYI, "%s: path: %s\n", __func__, search_name);
2837 * Try to use the IPC tcon, otherwise just use any
2839 tcon = ses->tcon_ipc;
2841 spin_lock(&cifs_tcp_ses_lock);
2842 tcon = list_first_entry_or_null(&ses->tcon_list,
2847 spin_unlock(&cifs_tcp_ses_lock);
2851 cifs_dbg(VFS, "session %p has no tcon available for a dfs referral request\n",
2857 utf16_path = cifs_strndup_to_utf16(search_name, PATH_MAX,
2859 nls_codepage, remap);
2865 dfs_req_size = sizeof(*dfs_req) + utf16_path_len;
2866 dfs_req = kzalloc(dfs_req_size, GFP_KERNEL);
2872 /* Highest DFS referral version understood */
2873 dfs_req->MaxReferralLevel = DFS_VERSION;
2875 /* Path to resolve in an UTF-16 null-terminated string */
2876 memcpy(dfs_req->RequestFileName, utf16_path, utf16_path_len);
2879 rc = SMB2_ioctl(xid, tcon, NO_FILE_ID, NO_FILE_ID,
2880 FSCTL_DFS_GET_REFERRALS,
2881 true /* is_fsctl */,
2882 (char *)dfs_req, dfs_req_size, CIFSMaxBufSize,
2883 (char **)&dfs_rsp, &dfs_rsp_size);
2884 } while (rc == -EAGAIN);
2887 if ((rc != -ENOENT) && (rc != -EOPNOTSUPP))
2888 cifs_tcon_dbg(VFS, "ioctl error in %s rc=%d\n", __func__, rc);
2892 rc = parse_dfs_referrals(dfs_rsp, dfs_rsp_size,
2893 num_of_nodes, target_nodes,
2894 nls_codepage, remap, search_name,
2895 true /* is_unicode */);
2897 cifs_tcon_dbg(VFS, "parse error in %s rc=%d\n", __func__, rc);
2902 if (tcon && !tcon->ipc) {
2903 /* ipc tcons are not refcounted */
2904 spin_lock(&cifs_tcp_ses_lock);
2906 spin_unlock(&cifs_tcp_ses_lock);
2915 parse_reparse_posix(struct reparse_posix_data *symlink_buf,
2916 u32 plen, char **target_path,
2917 struct cifs_sb_info *cifs_sb)
2921 /* See MS-FSCC 2.1.2.6 for the 'NFS' style reparse tags */
2922 len = le16_to_cpu(symlink_buf->ReparseDataLength);
2924 if (le64_to_cpu(symlink_buf->InodeType) != NFS_SPECFILE_LNK) {
2925 cifs_dbg(VFS, "%lld not a supported symlink type\n",
2926 le64_to_cpu(symlink_buf->InodeType));
2930 *target_path = cifs_strndup_from_utf16(
2931 symlink_buf->PathBuffer,
2932 len, true, cifs_sb->local_nls);
2933 if (!(*target_path))
2936 convert_delimiter(*target_path, '/');
2937 cifs_dbg(FYI, "%s: target path: %s\n", __func__, *target_path);
2943 parse_reparse_symlink(struct reparse_symlink_data_buffer *symlink_buf,
2944 u32 plen, char **target_path,
2945 struct cifs_sb_info *cifs_sb)
2947 unsigned int sub_len;
2948 unsigned int sub_offset;
2950 /* We handle Symbolic Link reparse tag here. See: MS-FSCC 2.1.2.4 */
2952 sub_offset = le16_to_cpu(symlink_buf->SubstituteNameOffset);
2953 sub_len = le16_to_cpu(symlink_buf->SubstituteNameLength);
2954 if (sub_offset + 20 > plen ||
2955 sub_offset + sub_len + 20 > plen) {
2956 cifs_dbg(VFS, "srv returned malformed symlink buffer\n");
2960 *target_path = cifs_strndup_from_utf16(
2961 symlink_buf->PathBuffer + sub_offset,
2962 sub_len, true, cifs_sb->local_nls);
2963 if (!(*target_path))
2966 convert_delimiter(*target_path, '/');
2967 cifs_dbg(FYI, "%s: target path: %s\n", __func__, *target_path);
2973 parse_reparse_point(struct reparse_data_buffer *buf,
2974 u32 plen, char **target_path,
2975 struct cifs_sb_info *cifs_sb)
2977 if (plen < sizeof(struct reparse_data_buffer)) {
2978 cifs_dbg(VFS, "reparse buffer is too small. Must be at least 8 bytes but was %d\n",
2983 if (plen < le16_to_cpu(buf->ReparseDataLength) +
2984 sizeof(struct reparse_data_buffer)) {
2985 cifs_dbg(VFS, "srv returned invalid reparse buf length: %d\n",
2990 /* See MS-FSCC 2.1.2 */
2991 switch (le32_to_cpu(buf->ReparseTag)) {
2992 case IO_REPARSE_TAG_NFS:
2993 return parse_reparse_posix(
2994 (struct reparse_posix_data *)buf,
2995 plen, target_path, cifs_sb);
2996 case IO_REPARSE_TAG_SYMLINK:
2997 return parse_reparse_symlink(
2998 (struct reparse_symlink_data_buffer *)buf,
2999 plen, target_path, cifs_sb);
3001 cifs_dbg(VFS, "srv returned unknown symlink buffer tag:0x%08x\n",
3002 le32_to_cpu(buf->ReparseTag));
3007 #define SMB2_SYMLINK_STRUCT_SIZE \
3008 (sizeof(struct smb2_err_rsp) - 1 + sizeof(struct smb2_symlink_err_rsp))
3011 smb2_query_symlink(const unsigned int xid, struct cifs_tcon *tcon,
3012 struct cifs_sb_info *cifs_sb, const char *full_path,
3013 char **target_path, bool is_reparse_point)
3016 __le16 *utf16_path = NULL;
3017 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
3018 struct cifs_open_parms oparms;
3019 struct cifs_fid fid;
3020 struct kvec err_iov = {NULL, 0};
3021 struct smb2_err_rsp *err_buf = NULL;
3022 struct smb2_symlink_err_rsp *symlink;
3023 struct TCP_Server_Info *server = cifs_pick_channel(tcon->ses);
3024 unsigned int sub_len;
3025 unsigned int sub_offset;
3026 unsigned int print_len;
3027 unsigned int print_offset;
3028 int flags = CIFS_CP_CREATE_CLOSE_OP;
3029 struct smb_rqst rqst[3];
3030 int resp_buftype[3];
3031 struct kvec rsp_iov[3];
3032 struct kvec open_iov[SMB2_CREATE_IOV_SIZE];
3033 struct kvec io_iov[SMB2_IOCTL_IOV_SIZE];
3034 struct kvec close_iov[1];
3035 struct smb2_create_rsp *create_rsp;
3036 struct smb2_ioctl_rsp *ioctl_rsp;
3037 struct reparse_data_buffer *reparse_buf;
3038 int create_options = is_reparse_point ? OPEN_REPARSE_POINT : 0;
3041 cifs_dbg(FYI, "%s: path: %s\n", __func__, full_path);
3043 *target_path = NULL;
3045 if (smb3_encryption_required(tcon))
3046 flags |= CIFS_TRANSFORM_REQ;
3048 memset(rqst, 0, sizeof(rqst));
3049 resp_buftype[0] = resp_buftype[1] = resp_buftype[2] = CIFS_NO_BUFFER;
3050 memset(rsp_iov, 0, sizeof(rsp_iov));
3052 utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb);
3057 memset(&open_iov, 0, sizeof(open_iov));
3058 rqst[0].rq_iov = open_iov;
3059 rqst[0].rq_nvec = SMB2_CREATE_IOV_SIZE;
3061 memset(&oparms, 0, sizeof(oparms));
3063 oparms.desired_access = FILE_READ_ATTRIBUTES;
3064 oparms.disposition = FILE_OPEN;
3065 oparms.create_options = cifs_create_options(cifs_sb, create_options);
3067 oparms.reconnect = false;
3069 rc = SMB2_open_init(tcon, server,
3070 &rqst[0], &oplock, &oparms, utf16_path);
3073 smb2_set_next_command(tcon, &rqst[0]);
3077 memset(&io_iov, 0, sizeof(io_iov));
3078 rqst[1].rq_iov = io_iov;
3079 rqst[1].rq_nvec = SMB2_IOCTL_IOV_SIZE;
3081 rc = SMB2_ioctl_init(tcon, server,
3082 &rqst[1], fid.persistent_fid,
3083 fid.volatile_fid, FSCTL_GET_REPARSE_POINT,
3084 true /* is_fctl */, NULL, 0,
3086 MAX_SMB2_CREATE_RESPONSE_SIZE -
3087 MAX_SMB2_CLOSE_RESPONSE_SIZE);
3091 smb2_set_next_command(tcon, &rqst[1]);
3092 smb2_set_related(&rqst[1]);
3096 memset(&close_iov, 0, sizeof(close_iov));
3097 rqst[2].rq_iov = close_iov;
3098 rqst[2].rq_nvec = 1;
3100 rc = SMB2_close_init(tcon, server,
3101 &rqst[2], COMPOUND_FID, COMPOUND_FID, false);
3105 smb2_set_related(&rqst[2]);
3107 rc = compound_send_recv(xid, tcon->ses, server,
3109 resp_buftype, rsp_iov);
3111 create_rsp = rsp_iov[0].iov_base;
3112 if (create_rsp && create_rsp->sync_hdr.Status)
3113 err_iov = rsp_iov[0];
3114 ioctl_rsp = rsp_iov[1].iov_base;
3117 * Open was successful and we got an ioctl response.
3119 if ((rc == 0) && (is_reparse_point)) {
3120 /* See MS-FSCC 2.3.23 */
3122 reparse_buf = (struct reparse_data_buffer *)
3123 ((char *)ioctl_rsp +
3124 le32_to_cpu(ioctl_rsp->OutputOffset));
3125 plen = le32_to_cpu(ioctl_rsp->OutputCount);
3127 if (plen + le32_to_cpu(ioctl_rsp->OutputOffset) >
3128 rsp_iov[1].iov_len) {
3129 cifs_tcon_dbg(VFS, "srv returned invalid ioctl len: %d\n",
3135 rc = parse_reparse_point(reparse_buf, plen, target_path,
3140 if (!rc || !err_iov.iov_base) {
3145 err_buf = err_iov.iov_base;
3146 if (le32_to_cpu(err_buf->ByteCount) < sizeof(struct smb2_symlink_err_rsp) ||
3147 err_iov.iov_len < SMB2_SYMLINK_STRUCT_SIZE) {
3152 symlink = (struct smb2_symlink_err_rsp *)err_buf->ErrorData;
3153 if (le32_to_cpu(symlink->SymLinkErrorTag) != SYMLINK_ERROR_TAG ||
3154 le32_to_cpu(symlink->ReparseTag) != IO_REPARSE_TAG_SYMLINK) {
3159 /* open must fail on symlink - reset rc */
3161 sub_len = le16_to_cpu(symlink->SubstituteNameLength);
3162 sub_offset = le16_to_cpu(symlink->SubstituteNameOffset);
3163 print_len = le16_to_cpu(symlink->PrintNameLength);
3164 print_offset = le16_to_cpu(symlink->PrintNameOffset);
3166 if (err_iov.iov_len < SMB2_SYMLINK_STRUCT_SIZE + sub_offset + sub_len) {
3171 if (err_iov.iov_len <
3172 SMB2_SYMLINK_STRUCT_SIZE + print_offset + print_len) {
3177 *target_path = cifs_strndup_from_utf16(
3178 (char *)symlink->PathBuffer + sub_offset,
3179 sub_len, true, cifs_sb->local_nls);
3180 if (!(*target_path)) {
3184 convert_delimiter(*target_path, '/');
3185 cifs_dbg(FYI, "%s: target path: %s\n", __func__, *target_path);
3188 cifs_dbg(FYI, "query symlink rc %d\n", rc);
3190 SMB2_open_free(&rqst[0]);
3191 SMB2_ioctl_free(&rqst[1]);
3192 SMB2_close_free(&rqst[2]);
3193 free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base);
3194 free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base);
3195 free_rsp_buf(resp_buftype[2], rsp_iov[2].iov_base);
3200 smb2_query_reparse_tag(const unsigned int xid, struct cifs_tcon *tcon,
3201 struct cifs_sb_info *cifs_sb, const char *full_path,
3205 __le16 *utf16_path = NULL;
3206 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
3207 struct cifs_open_parms oparms;
3208 struct cifs_fid fid;
3209 struct TCP_Server_Info *server = cifs_pick_channel(tcon->ses);
3210 int flags = CIFS_CP_CREATE_CLOSE_OP;
3211 struct smb_rqst rqst[3];
3212 int resp_buftype[3];
3213 struct kvec rsp_iov[3];
3214 struct kvec open_iov[SMB2_CREATE_IOV_SIZE];
3215 struct kvec io_iov[SMB2_IOCTL_IOV_SIZE];
3216 struct kvec close_iov[1];
3217 struct smb2_ioctl_rsp *ioctl_rsp;
3218 struct reparse_data_buffer *reparse_buf;
3221 cifs_dbg(FYI, "%s: path: %s\n", __func__, full_path);
3223 if (smb3_encryption_required(tcon))
3224 flags |= CIFS_TRANSFORM_REQ;
3226 memset(rqst, 0, sizeof(rqst));
3227 resp_buftype[0] = resp_buftype[1] = resp_buftype[2] = CIFS_NO_BUFFER;
3228 memset(rsp_iov, 0, sizeof(rsp_iov));
3230 utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb);
3235 * setup smb2open - TODO add optimization to call cifs_get_readable_path
3236 * to see if there is a handle already open that we can use
3238 memset(&open_iov, 0, sizeof(open_iov));
3239 rqst[0].rq_iov = open_iov;
3240 rqst[0].rq_nvec = SMB2_CREATE_IOV_SIZE;
3242 memset(&oparms, 0, sizeof(oparms));
3244 oparms.desired_access = FILE_READ_ATTRIBUTES;
3245 oparms.disposition = FILE_OPEN;
3246 oparms.create_options = cifs_create_options(cifs_sb, OPEN_REPARSE_POINT);
3248 oparms.reconnect = false;
3250 rc = SMB2_open_init(tcon, server,
3251 &rqst[0], &oplock, &oparms, utf16_path);
3254 smb2_set_next_command(tcon, &rqst[0]);
3258 memset(&io_iov, 0, sizeof(io_iov));
3259 rqst[1].rq_iov = io_iov;
3260 rqst[1].rq_nvec = SMB2_IOCTL_IOV_SIZE;
3262 rc = SMB2_ioctl_init(tcon, server,
3263 &rqst[1], COMPOUND_FID,
3264 COMPOUND_FID, FSCTL_GET_REPARSE_POINT,
3265 true /* is_fctl */, NULL, 0,
3267 MAX_SMB2_CREATE_RESPONSE_SIZE -
3268 MAX_SMB2_CLOSE_RESPONSE_SIZE);
3272 smb2_set_next_command(tcon, &rqst[1]);
3273 smb2_set_related(&rqst[1]);
3277 memset(&close_iov, 0, sizeof(close_iov));
3278 rqst[2].rq_iov = close_iov;
3279 rqst[2].rq_nvec = 1;
3281 rc = SMB2_close_init(tcon, server,
3282 &rqst[2], COMPOUND_FID, COMPOUND_FID, false);
3286 smb2_set_related(&rqst[2]);
3288 rc = compound_send_recv(xid, tcon->ses, server,
3290 resp_buftype, rsp_iov);
3292 ioctl_rsp = rsp_iov[1].iov_base;
3295 * Open was successful and we got an ioctl response.
3298 /* See MS-FSCC 2.3.23 */
3300 reparse_buf = (struct reparse_data_buffer *)
3301 ((char *)ioctl_rsp +
3302 le32_to_cpu(ioctl_rsp->OutputOffset));
3303 plen = le32_to_cpu(ioctl_rsp->OutputCount);
3305 if (plen + le32_to_cpu(ioctl_rsp->OutputOffset) >
3306 rsp_iov[1].iov_len) {
3307 cifs_tcon_dbg(FYI, "srv returned invalid ioctl len: %d\n",
3312 *tag = le32_to_cpu(reparse_buf->ReparseTag);
3317 SMB2_open_free(&rqst[0]);
3318 SMB2_ioctl_free(&rqst[1]);
3319 SMB2_close_free(&rqst[2]);
3320 free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base);
3321 free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base);
3322 free_rsp_buf(resp_buftype[2], rsp_iov[2].iov_base);
3326 static struct cifs_ntsd *
3327 get_smb2_acl_by_fid(struct cifs_sb_info *cifs_sb,
3328 const struct cifs_fid *cifsfid, u32 *pacllen, u32 info)
3330 struct cifs_ntsd *pntsd = NULL;
3332 int rc = -EOPNOTSUPP;
3333 struct tcon_link *tlink = cifs_sb_tlink(cifs_sb);
3336 return ERR_CAST(tlink);
3339 cifs_dbg(FYI, "trying to get acl\n");
3341 rc = SMB2_query_acl(xid, tlink_tcon(tlink), cifsfid->persistent_fid,
3342 cifsfid->volatile_fid, (void **)&pntsd, pacllen,
3346 cifs_put_tlink(tlink);
3348 cifs_dbg(FYI, "%s: rc = %d ACL len %d\n", __func__, rc, *pacllen);
3355 static struct cifs_ntsd *
3356 get_smb2_acl_by_path(struct cifs_sb_info *cifs_sb,
3357 const char *path, u32 *pacllen, u32 info)
3359 struct cifs_ntsd *pntsd = NULL;
3360 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
3363 struct cifs_tcon *tcon;
3364 struct tcon_link *tlink = cifs_sb_tlink(cifs_sb);
3365 struct cifs_fid fid;
3366 struct cifs_open_parms oparms;
3369 cifs_dbg(FYI, "get smb3 acl for path %s\n", path);
3371 return ERR_CAST(tlink);
3373 tcon = tlink_tcon(tlink);
3376 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
3384 oparms.desired_access = READ_CONTROL;
3385 oparms.disposition = FILE_OPEN;
3387 * When querying an ACL, even if the file is a symlink we want to open
3388 * the source not the target, and so the protocol requires that the
3389 * client specify this flag when opening a reparse point
3391 oparms.create_options = cifs_create_options(cifs_sb, 0) | OPEN_REPARSE_POINT;
3393 oparms.reconnect = false;
3395 if (info & SACL_SECINFO)
3396 oparms.desired_access |= SYSTEM_SECURITY;
3398 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL, NULL,
3402 rc = SMB2_query_acl(xid, tlink_tcon(tlink), fid.persistent_fid,
3403 fid.volatile_fid, (void **)&pntsd, pacllen,
3405 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
3408 cifs_put_tlink(tlink);
3411 cifs_dbg(FYI, "%s: rc = %d ACL len %d\n", __func__, rc, *pacllen);
3418 set_smb2_acl(struct cifs_ntsd *pnntsd, __u32 acllen,
3419 struct inode *inode, const char *path, int aclflag)
3421 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
3423 int rc, access_flags = 0;
3424 struct cifs_tcon *tcon;
3425 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
3426 struct tcon_link *tlink = cifs_sb_tlink(cifs_sb);
3427 struct cifs_fid fid;
3428 struct cifs_open_parms oparms;
3431 cifs_dbg(FYI, "set smb3 acl for path %s\n", path);
3433 return PTR_ERR(tlink);
3435 tcon = tlink_tcon(tlink);
3438 if (aclflag & CIFS_ACL_OWNER || aclflag & CIFS_ACL_GROUP)
3439 access_flags |= WRITE_OWNER;
3440 if (aclflag & CIFS_ACL_SACL)
3441 access_flags |= SYSTEM_SECURITY;
3442 if (aclflag & CIFS_ACL_DACL)
3443 access_flags |= WRITE_DAC;
3445 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
3453 oparms.desired_access = access_flags;
3454 oparms.create_options = cifs_create_options(cifs_sb, 0);
3455 oparms.disposition = FILE_OPEN;
3458 oparms.reconnect = false;
3460 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL,
3464 rc = SMB2_set_acl(xid, tlink_tcon(tlink), fid.persistent_fid,
3465 fid.volatile_fid, pnntsd, acllen, aclflag);
3466 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
3469 cifs_put_tlink(tlink);
3474 /* Retrieve an ACL from the server */
3475 static struct cifs_ntsd *
3476 get_smb2_acl(struct cifs_sb_info *cifs_sb,
3477 struct inode *inode, const char *path,
3478 u32 *pacllen, u32 info)
3480 struct cifs_ntsd *pntsd = NULL;
3481 struct cifsFileInfo *open_file = NULL;
3483 if (inode && !(info & SACL_SECINFO))
3484 open_file = find_readable_file(CIFS_I(inode), true);
3485 if (!open_file || (info & SACL_SECINFO))
3486 return get_smb2_acl_by_path(cifs_sb, path, pacllen, info);
3488 pntsd = get_smb2_acl_by_fid(cifs_sb, &open_file->fid, pacllen, info);
3489 cifsFileInfo_put(open_file);
3493 static long smb3_zero_range(struct file *file, struct cifs_tcon *tcon,
3494 loff_t offset, loff_t len, bool keep_size)
3496 struct cifs_ses *ses = tcon->ses;
3497 struct inode *inode;
3498 struct cifsInodeInfo *cifsi;
3499 struct cifsFileInfo *cfile = file->private_data;
3500 struct file_zero_data_information fsctl_buf;
3507 inode = d_inode(cfile->dentry);
3508 cifsi = CIFS_I(inode);
3510 trace_smb3_zero_enter(xid, cfile->fid.persistent_fid, tcon->tid,
3511 ses->Suid, offset, len);
3514 * We zero the range through ioctl, so we need remove the page caches
3515 * first, otherwise the data may be inconsistent with the server.
3517 truncate_pagecache_range(inode, offset, offset + len - 1);
3519 /* if file not oplocked can't be sure whether asking to extend size */
3520 if (!CIFS_CACHE_READ(cifsi))
3521 if (keep_size == false) {
3523 trace_smb3_zero_err(xid, cfile->fid.persistent_fid,
3524 tcon->tid, ses->Suid, offset, len, rc);
3529 cifs_dbg(FYI, "Offset %lld len %lld\n", offset, len);
3531 fsctl_buf.FileOffset = cpu_to_le64(offset);
3532 fsctl_buf.BeyondFinalZero = cpu_to_le64(offset + len);
3534 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
3535 cfile->fid.volatile_fid, FSCTL_SET_ZERO_DATA, true,
3537 sizeof(struct file_zero_data_information),
3540 goto zero_range_exit;
3543 * do we also need to change the size of the file?
3545 if (keep_size == false && i_size_read(inode) < offset + len) {
3546 eof = cpu_to_le64(offset + len);
3547 rc = SMB2_set_eof(xid, tcon, cfile->fid.persistent_fid,
3548 cfile->fid.volatile_fid, cfile->pid, &eof);
3554 trace_smb3_zero_err(xid, cfile->fid.persistent_fid, tcon->tid,
3555 ses->Suid, offset, len, rc);
3557 trace_smb3_zero_done(xid, cfile->fid.persistent_fid, tcon->tid,
3558 ses->Suid, offset, len);
3562 static long smb3_punch_hole(struct file *file, struct cifs_tcon *tcon,
3563 loff_t offset, loff_t len)
3565 struct inode *inode;
3566 struct cifsFileInfo *cfile = file->private_data;
3567 struct file_zero_data_information fsctl_buf;
3570 __u8 set_sparse = 1;
3574 inode = d_inode(cfile->dentry);
3576 /* Need to make file sparse, if not already, before freeing range. */
3577 /* Consider adding equivalent for compressed since it could also work */
3578 if (!smb2_set_sparse(xid, tcon, cfile, inode, set_sparse)) {
3585 * We implement the punch hole through ioctl, so we need remove the page
3586 * caches first, otherwise the data may be inconsistent with the server.
3588 truncate_pagecache_range(inode, offset, offset + len - 1);
3590 cifs_dbg(FYI, "Offset %lld len %lld\n", offset, len);
3592 fsctl_buf.FileOffset = cpu_to_le64(offset);
3593 fsctl_buf.BeyondFinalZero = cpu_to_le64(offset + len);
3595 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
3596 cfile->fid.volatile_fid, FSCTL_SET_ZERO_DATA,
3597 true /* is_fctl */, (char *)&fsctl_buf,
3598 sizeof(struct file_zero_data_information),
3599 CIFSMaxBufSize, NULL, NULL);
3604 static long smb3_simple_falloc(struct file *file, struct cifs_tcon *tcon,
3605 loff_t off, loff_t len, bool keep_size)
3607 struct inode *inode;
3608 struct cifsInodeInfo *cifsi;
3609 struct cifsFileInfo *cfile = file->private_data;
3610 long rc = -EOPNOTSUPP;
3616 inode = d_inode(cfile->dentry);
3617 cifsi = CIFS_I(inode);
3619 trace_smb3_falloc_enter(xid, cfile->fid.persistent_fid, tcon->tid,
3620 tcon->ses->Suid, off, len);
3621 /* if file not oplocked can't be sure whether asking to extend size */
3622 if (!CIFS_CACHE_READ(cifsi))
3623 if (keep_size == false) {
3624 trace_smb3_falloc_err(xid, cfile->fid.persistent_fid,
3625 tcon->tid, tcon->ses->Suid, off, len, rc);
3631 * Extending the file
3633 if ((keep_size == false) && i_size_read(inode) < off + len) {
3634 rc = inode_newsize_ok(inode, off + len);
3638 if ((cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) == 0)
3639 smb2_set_sparse(xid, tcon, cfile, inode, false);
3641 eof = cpu_to_le64(off + len);
3642 rc = SMB2_set_eof(xid, tcon, cfile->fid.persistent_fid,
3643 cfile->fid.volatile_fid, cfile->pid, &eof);
3645 cifsi->server_eof = off + len;
3646 cifs_setsize(inode, off + len);
3647 cifs_truncate_page(inode->i_mapping, inode->i_size);
3648 truncate_setsize(inode, off + len);
3654 * Files are non-sparse by default so falloc may be a no-op
3655 * Must check if file sparse. If not sparse, and since we are not
3656 * extending then no need to do anything since file already allocated
3658 if ((cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) == 0) {
3663 if ((keep_size == true) || (i_size_read(inode) >= off + len)) {
3665 * Check if falloc starts within first few pages of file
3666 * and ends within a few pages of the end of file to
3667 * ensure that most of file is being forced to be
3668 * fallocated now. If so then setting whole file sparse
3669 * ie potentially making a few extra pages at the beginning
3670 * or end of the file non-sparse via set_sparse is harmless.
3672 if ((off > 8192) || (off + len + 8192 < i_size_read(inode))) {
3678 smb2_set_sparse(xid, tcon, cfile, inode, false);
3683 trace_smb3_falloc_err(xid, cfile->fid.persistent_fid, tcon->tid,
3684 tcon->ses->Suid, off, len, rc);
3686 trace_smb3_falloc_done(xid, cfile->fid.persistent_fid, tcon->tid,
3687 tcon->ses->Suid, off, len);
3693 static long smb3_collapse_range(struct file *file, struct cifs_tcon *tcon,
3694 loff_t off, loff_t len)
3698 struct cifsFileInfo *cfile = file->private_data;
3703 if (off >= i_size_read(file->f_inode) ||
3704 off + len >= i_size_read(file->f_inode)) {
3709 rc = smb2_copychunk_range(xid, cfile, cfile, off + len,
3710 i_size_read(file->f_inode) - off - len, off);
3714 eof = cpu_to_le64(i_size_read(file->f_inode) - len);
3715 rc = SMB2_set_eof(xid, tcon, cfile->fid.persistent_fid,
3716 cfile->fid.volatile_fid, cfile->pid, &eof);
3726 static long smb3_insert_range(struct file *file, struct cifs_tcon *tcon,
3727 loff_t off, loff_t len)
3731 struct cifsFileInfo *cfile = file->private_data;
3737 if (off >= i_size_read(file->f_inode)) {
3742 count = i_size_read(file->f_inode) - off;
3743 eof = cpu_to_le64(i_size_read(file->f_inode) + len);
3745 rc = SMB2_set_eof(xid, tcon, cfile->fid.persistent_fid,
3746 cfile->fid.volatile_fid, cfile->pid, &eof);
3750 rc = smb2_copychunk_range(xid, cfile, cfile, off, count, off + len);
3754 rc = smb3_zero_range(file, tcon, off, len, 1);
3764 static loff_t smb3_llseek(struct file *file, struct cifs_tcon *tcon, loff_t offset, int whence)
3766 struct cifsFileInfo *wrcfile, *cfile = file->private_data;
3767 struct cifsInodeInfo *cifsi;
3768 struct inode *inode;
3770 struct file_allocated_range_buffer in_data, *out_data = NULL;
3774 if (whence != SEEK_HOLE && whence != SEEK_DATA)
3775 return generic_file_llseek(file, offset, whence);
3777 inode = d_inode(cfile->dentry);
3778 cifsi = CIFS_I(inode);
3780 if (offset < 0 || offset >= i_size_read(inode))
3785 * We need to be sure that all dirty pages are written as they
3786 * might fill holes on the server.
3787 * Note that we also MUST flush any written pages since at least
3788 * some servers (Windows2016) will not reflect recent writes in
3789 * QUERY_ALLOCATED_RANGES until SMB2_flush is called.
3791 wrcfile = find_writable_file(cifsi, FIND_WR_ANY);
3793 filemap_write_and_wait(inode->i_mapping);
3794 smb2_flush_file(xid, tcon, &wrcfile->fid);
3795 cifsFileInfo_put(wrcfile);
3798 if (!(cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE)) {
3799 if (whence == SEEK_HOLE)
3800 offset = i_size_read(inode);
3804 in_data.file_offset = cpu_to_le64(offset);
3805 in_data.length = cpu_to_le64(i_size_read(inode));
3807 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
3808 cfile->fid.volatile_fid,
3809 FSCTL_QUERY_ALLOCATED_RANGES, true,
3810 (char *)&in_data, sizeof(in_data),
3811 sizeof(struct file_allocated_range_buffer),
3812 (char **)&out_data, &out_data_len);
3818 if (whence == SEEK_HOLE && out_data_len == 0)
3821 if (whence == SEEK_DATA && out_data_len == 0) {
3826 if (out_data_len < sizeof(struct file_allocated_range_buffer)) {
3830 if (whence == SEEK_DATA) {
3831 offset = le64_to_cpu(out_data->file_offset);
3834 if (offset < le64_to_cpu(out_data->file_offset))
3837 offset = le64_to_cpu(out_data->file_offset) + le64_to_cpu(out_data->length);
3843 return vfs_setpos(file, offset, inode->i_sb->s_maxbytes);
3848 static int smb3_fiemap(struct cifs_tcon *tcon,
3849 struct cifsFileInfo *cfile,
3850 struct fiemap_extent_info *fei, u64 start, u64 len)
3853 struct file_allocated_range_buffer in_data, *out_data;
3855 int i, num, rc, flags, last_blob;
3858 rc = fiemap_prep(d_inode(cfile->dentry), fei, start, &len, 0);
3864 in_data.file_offset = cpu_to_le64(start);
3865 in_data.length = cpu_to_le64(len);
3867 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
3868 cfile->fid.volatile_fid,
3869 FSCTL_QUERY_ALLOCATED_RANGES, true,
3870 (char *)&in_data, sizeof(in_data),
3871 1024 * sizeof(struct file_allocated_range_buffer),
3872 (char **)&out_data, &out_data_len);
3881 if (out_data_len && out_data_len < sizeof(struct file_allocated_range_buffer)) {
3885 if (out_data_len % sizeof(struct file_allocated_range_buffer)) {
3890 num = out_data_len / sizeof(struct file_allocated_range_buffer);
3891 for (i = 0; i < num; i++) {
3893 if (i == num - 1 && last_blob)
3894 flags |= FIEMAP_EXTENT_LAST;
3896 rc = fiemap_fill_next_extent(fei,
3897 le64_to_cpu(out_data[i].file_offset),
3898 le64_to_cpu(out_data[i].file_offset),
3899 le64_to_cpu(out_data[i].length),
3910 next = le64_to_cpu(out_data[num - 1].file_offset) +
3911 le64_to_cpu(out_data[num - 1].length);
3912 len = len - (next - start);
3923 static long smb3_fallocate(struct file *file, struct cifs_tcon *tcon, int mode,
3924 loff_t off, loff_t len)
3926 /* KEEP_SIZE already checked for by do_fallocate */
3927 if (mode & FALLOC_FL_PUNCH_HOLE)
3928 return smb3_punch_hole(file, tcon, off, len);
3929 else if (mode & FALLOC_FL_ZERO_RANGE) {
3930 if (mode & FALLOC_FL_KEEP_SIZE)
3931 return smb3_zero_range(file, tcon, off, len, true);
3932 return smb3_zero_range(file, tcon, off, len, false);
3933 } else if (mode == FALLOC_FL_KEEP_SIZE)
3934 return smb3_simple_falloc(file, tcon, off, len, true);
3935 else if (mode == FALLOC_FL_COLLAPSE_RANGE)
3936 return smb3_collapse_range(file, tcon, off, len);
3937 else if (mode == FALLOC_FL_INSERT_RANGE)
3938 return smb3_insert_range(file, tcon, off, len);
3940 return smb3_simple_falloc(file, tcon, off, len, false);
3946 smb2_downgrade_oplock(struct TCP_Server_Info *server,
3947 struct cifsInodeInfo *cinode, __u32 oplock,
3948 unsigned int epoch, bool *purge_cache)
3950 server->ops->set_oplock_level(cinode, oplock, 0, NULL);
3954 smb21_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
3955 unsigned int epoch, bool *purge_cache);
3958 smb3_downgrade_oplock(struct TCP_Server_Info *server,
3959 struct cifsInodeInfo *cinode, __u32 oplock,
3960 unsigned int epoch, bool *purge_cache)
3962 unsigned int old_state = cinode->oplock;
3963 unsigned int old_epoch = cinode->epoch;
3964 unsigned int new_state;
3966 if (epoch > old_epoch) {
3967 smb21_set_oplock_level(cinode, oplock, 0, NULL);
3968 cinode->epoch = epoch;
3971 new_state = cinode->oplock;
3972 *purge_cache = false;
3974 if ((old_state & CIFS_CACHE_READ_FLG) != 0 &&
3975 (new_state & CIFS_CACHE_READ_FLG) == 0)
3976 *purge_cache = true;
3977 else if (old_state == new_state && (epoch - old_epoch > 1))
3978 *purge_cache = true;
3982 smb2_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
3983 unsigned int epoch, bool *purge_cache)
3986 cinode->lease_granted = false;
3987 if (oplock == SMB2_OPLOCK_LEVEL_NOCHANGE)
3989 if (oplock == SMB2_OPLOCK_LEVEL_BATCH) {
3990 cinode->oplock = CIFS_CACHE_RHW_FLG;
3991 cifs_dbg(FYI, "Batch Oplock granted on inode %p\n",
3992 &cinode->vfs_inode);
3993 } else if (oplock == SMB2_OPLOCK_LEVEL_EXCLUSIVE) {
3994 cinode->oplock = CIFS_CACHE_RW_FLG;
3995 cifs_dbg(FYI, "Exclusive Oplock granted on inode %p\n",
3996 &cinode->vfs_inode);
3997 } else if (oplock == SMB2_OPLOCK_LEVEL_II) {
3998 cinode->oplock = CIFS_CACHE_READ_FLG;
3999 cifs_dbg(FYI, "Level II Oplock granted on inode %p\n",
4000 &cinode->vfs_inode);
4006 smb21_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
4007 unsigned int epoch, bool *purge_cache)
4009 char message[5] = {0};
4010 unsigned int new_oplock = 0;
4013 cinode->lease_granted = true;
4014 if (oplock == SMB2_OPLOCK_LEVEL_NOCHANGE)
4017 /* Check if the server granted an oplock rather than a lease */
4018 if (oplock & SMB2_OPLOCK_LEVEL_EXCLUSIVE)
4019 return smb2_set_oplock_level(cinode, oplock, epoch,
4022 if (oplock & SMB2_LEASE_READ_CACHING_HE) {
4023 new_oplock |= CIFS_CACHE_READ_FLG;
4024 strcat(message, "R");
4026 if (oplock & SMB2_LEASE_HANDLE_CACHING_HE) {
4027 new_oplock |= CIFS_CACHE_HANDLE_FLG;
4028 strcat(message, "H");
4030 if (oplock & SMB2_LEASE_WRITE_CACHING_HE) {
4031 new_oplock |= CIFS_CACHE_WRITE_FLG;
4032 strcat(message, "W");
4035 strncpy(message, "None", sizeof(message));
4037 cinode->oplock = new_oplock;
4038 cifs_dbg(FYI, "%s Lease granted on inode %p\n", message,
4039 &cinode->vfs_inode);
4043 smb3_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
4044 unsigned int epoch, bool *purge_cache)
4046 unsigned int old_oplock = cinode->oplock;
4048 smb21_set_oplock_level(cinode, oplock, epoch, purge_cache);
4051 *purge_cache = false;
4052 if (old_oplock == CIFS_CACHE_READ_FLG) {
4053 if (cinode->oplock == CIFS_CACHE_READ_FLG &&
4054 (epoch - cinode->epoch > 0))
4055 *purge_cache = true;
4056 else if (cinode->oplock == CIFS_CACHE_RH_FLG &&
4057 (epoch - cinode->epoch > 1))
4058 *purge_cache = true;
4059 else if (cinode->oplock == CIFS_CACHE_RHW_FLG &&
4060 (epoch - cinode->epoch > 1))
4061 *purge_cache = true;
4062 else if (cinode->oplock == 0 &&
4063 (epoch - cinode->epoch > 0))
4064 *purge_cache = true;
4065 } else if (old_oplock == CIFS_CACHE_RH_FLG) {
4066 if (cinode->oplock == CIFS_CACHE_RH_FLG &&
4067 (epoch - cinode->epoch > 0))
4068 *purge_cache = true;
4069 else if (cinode->oplock == CIFS_CACHE_RHW_FLG &&
4070 (epoch - cinode->epoch > 1))
4071 *purge_cache = true;
4073 cinode->epoch = epoch;
4078 smb2_is_read_op(__u32 oplock)
4080 return oplock == SMB2_OPLOCK_LEVEL_II;
4084 smb21_is_read_op(__u32 oplock)
4086 return (oplock & SMB2_LEASE_READ_CACHING_HE) &&
4087 !(oplock & SMB2_LEASE_WRITE_CACHING_HE);
4091 map_oplock_to_lease(u8 oplock)
4093 if (oplock == SMB2_OPLOCK_LEVEL_EXCLUSIVE)
4094 return SMB2_LEASE_WRITE_CACHING | SMB2_LEASE_READ_CACHING;
4095 else if (oplock == SMB2_OPLOCK_LEVEL_II)
4096 return SMB2_LEASE_READ_CACHING;
4097 else if (oplock == SMB2_OPLOCK_LEVEL_BATCH)
4098 return SMB2_LEASE_HANDLE_CACHING | SMB2_LEASE_READ_CACHING |
4099 SMB2_LEASE_WRITE_CACHING;
4104 smb2_create_lease_buf(u8 *lease_key, u8 oplock)
4106 struct create_lease *buf;
4108 buf = kzalloc(sizeof(struct create_lease), GFP_KERNEL);
4112 memcpy(&buf->lcontext.LeaseKey, lease_key, SMB2_LEASE_KEY_SIZE);
4113 buf->lcontext.LeaseState = map_oplock_to_lease(oplock);
4115 buf->ccontext.DataOffset = cpu_to_le16(offsetof
4116 (struct create_lease, lcontext));
4117 buf->ccontext.DataLength = cpu_to_le32(sizeof(struct lease_context));
4118 buf->ccontext.NameOffset = cpu_to_le16(offsetof
4119 (struct create_lease, Name));
4120 buf->ccontext.NameLength = cpu_to_le16(4);
4121 /* SMB2_CREATE_REQUEST_LEASE is "RqLs" */
4130 smb3_create_lease_buf(u8 *lease_key, u8 oplock)
4132 struct create_lease_v2 *buf;
4134 buf = kzalloc(sizeof(struct create_lease_v2), GFP_KERNEL);
4138 memcpy(&buf->lcontext.LeaseKey, lease_key, SMB2_LEASE_KEY_SIZE);
4139 buf->lcontext.LeaseState = map_oplock_to_lease(oplock);
4141 buf->ccontext.DataOffset = cpu_to_le16(offsetof
4142 (struct create_lease_v2, lcontext));
4143 buf->ccontext.DataLength = cpu_to_le32(sizeof(struct lease_context_v2));
4144 buf->ccontext.NameOffset = cpu_to_le16(offsetof
4145 (struct create_lease_v2, Name));
4146 buf->ccontext.NameLength = cpu_to_le16(4);
4147 /* SMB2_CREATE_REQUEST_LEASE is "RqLs" */
4156 smb2_parse_lease_buf(void *buf, unsigned int *epoch, char *lease_key)
4158 struct create_lease *lc = (struct create_lease *)buf;
4160 *epoch = 0; /* not used */
4161 if (lc->lcontext.LeaseFlags & SMB2_LEASE_FLAG_BREAK_IN_PROGRESS)
4162 return SMB2_OPLOCK_LEVEL_NOCHANGE;
4163 return le32_to_cpu(lc->lcontext.LeaseState);
4167 smb3_parse_lease_buf(void *buf, unsigned int *epoch, char *lease_key)
4169 struct create_lease_v2 *lc = (struct create_lease_v2 *)buf;
4171 *epoch = le16_to_cpu(lc->lcontext.Epoch);
4172 if (lc->lcontext.LeaseFlags & SMB2_LEASE_FLAG_BREAK_IN_PROGRESS)
4173 return SMB2_OPLOCK_LEVEL_NOCHANGE;
4175 memcpy(lease_key, &lc->lcontext.LeaseKey, SMB2_LEASE_KEY_SIZE);
4176 return le32_to_cpu(lc->lcontext.LeaseState);
4180 smb2_wp_retry_size(struct inode *inode)
4182 return min_t(unsigned int, CIFS_SB(inode->i_sb)->ctx->wsize,
4183 SMB2_MAX_BUFFER_SIZE);
4187 smb2_dir_needs_close(struct cifsFileInfo *cfile)
4189 return !cfile->invalidHandle;
4193 fill_transform_hdr(struct smb2_transform_hdr *tr_hdr, unsigned int orig_len,
4194 struct smb_rqst *old_rq, __le16 cipher_type)
4196 struct smb2_sync_hdr *shdr =
4197 (struct smb2_sync_hdr *)old_rq->rq_iov[0].iov_base;
4199 memset(tr_hdr, 0, sizeof(struct smb2_transform_hdr));
4200 tr_hdr->ProtocolId = SMB2_TRANSFORM_PROTO_NUM;
4201 tr_hdr->OriginalMessageSize = cpu_to_le32(orig_len);
4202 tr_hdr->Flags = cpu_to_le16(0x01);
4203 if ((cipher_type == SMB2_ENCRYPTION_AES128_GCM) ||
4204 (cipher_type == SMB2_ENCRYPTION_AES256_GCM))
4205 get_random_bytes(&tr_hdr->Nonce, SMB3_AES_GCM_NONCE);
4207 get_random_bytes(&tr_hdr->Nonce, SMB3_AES_CCM_NONCE);
4208 memcpy(&tr_hdr->SessionId, &shdr->SessionId, 8);
4211 /* We can not use the normal sg_set_buf() as we will sometimes pass a
4212 * stack object as buf.
4214 static inline void smb2_sg_set_buf(struct scatterlist *sg, const void *buf,
4215 unsigned int buflen)
4219 * VMAP_STACK (at least) puts stack into the vmalloc address space
4221 if (is_vmalloc_addr(buf))
4222 addr = vmalloc_to_page(buf);
4224 addr = virt_to_page(buf);
4225 sg_set_page(sg, addr, buflen, offset_in_page(buf));
4228 /* Assumes the first rqst has a transform header as the first iov.
4230 * rqst[0].rq_iov[0] is transform header
4231 * rqst[0].rq_iov[1+] data to be encrypted/decrypted
4232 * rqst[1+].rq_iov[0+] data to be encrypted/decrypted
4234 static struct scatterlist *
4235 init_sg(int num_rqst, struct smb_rqst *rqst, u8 *sign)
4237 unsigned int sg_len;
4238 struct scatterlist *sg;
4241 unsigned int idx = 0;
4245 for (i = 0; i < num_rqst; i++)
4246 sg_len += rqst[i].rq_nvec + rqst[i].rq_npages;
4248 sg = kmalloc_array(sg_len, sizeof(struct scatterlist), GFP_KERNEL);
4252 sg_init_table(sg, sg_len);
4253 for (i = 0; i < num_rqst; i++) {
4254 for (j = 0; j < rqst[i].rq_nvec; j++) {
4256 * The first rqst has a transform header where the
4257 * first 20 bytes are not part of the encrypted blob
4259 skip = (i == 0) && (j == 0) ? 20 : 0;
4260 smb2_sg_set_buf(&sg[idx++],
4261 rqst[i].rq_iov[j].iov_base + skip,
4262 rqst[i].rq_iov[j].iov_len - skip);
4265 for (j = 0; j < rqst[i].rq_npages; j++) {
4266 unsigned int len, offset;
4268 rqst_page_get_length(&rqst[i], j, &len, &offset);
4269 sg_set_page(&sg[idx++], rqst[i].rq_pages[j], len, offset);
4272 smb2_sg_set_buf(&sg[idx], sign, SMB2_SIGNATURE_SIZE);
4277 smb2_get_enc_key(struct TCP_Server_Info *server, __u64 ses_id, int enc, u8 *key)
4279 struct cifs_ses *ses;
4282 spin_lock(&cifs_tcp_ses_lock);
4283 list_for_each_entry(server, &cifs_tcp_ses_list, tcp_ses_list) {
4284 list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) {
4285 if (ses->Suid == ses_id) {
4286 ses_enc_key = enc ? ses->smb3encryptionkey :
4287 ses->smb3decryptionkey;
4288 memcpy(key, ses_enc_key, SMB3_ENC_DEC_KEY_SIZE);
4289 spin_unlock(&cifs_tcp_ses_lock);
4294 spin_unlock(&cifs_tcp_ses_lock);
4299 * Encrypt or decrypt @rqst message. @rqst[0] has the following format:
4300 * iov[0] - transform header (associate data),
4301 * iov[1-N] - SMB2 header and pages - data to encrypt.
4302 * On success return encrypted data in iov[1-N] and pages, leave iov[0]
4306 crypt_message(struct TCP_Server_Info *server, int num_rqst,
4307 struct smb_rqst *rqst, int enc)
4309 struct smb2_transform_hdr *tr_hdr =
4310 (struct smb2_transform_hdr *)rqst[0].rq_iov[0].iov_base;
4311 unsigned int assoc_data_len = sizeof(struct smb2_transform_hdr) - 20;
4313 struct scatterlist *sg;
4314 u8 sign[SMB2_SIGNATURE_SIZE] = {};
4315 u8 key[SMB3_ENC_DEC_KEY_SIZE];
4316 struct aead_request *req;
4318 unsigned int iv_len;
4319 DECLARE_CRYPTO_WAIT(wait);
4320 struct crypto_aead *tfm;
4321 unsigned int crypt_len = le32_to_cpu(tr_hdr->OriginalMessageSize);
4323 rc = smb2_get_enc_key(server, tr_hdr->SessionId, enc, key);
4325 cifs_server_dbg(VFS, "%s: Could not get %scryption key\n", __func__,
4330 rc = smb3_crypto_aead_allocate(server);
4332 cifs_server_dbg(VFS, "%s: crypto alloc failed\n", __func__);
4336 tfm = enc ? server->secmech.ccmaesencrypt :
4337 server->secmech.ccmaesdecrypt;
4339 if ((server->cipher_type == SMB2_ENCRYPTION_AES256_CCM) ||
4340 (server->cipher_type == SMB2_ENCRYPTION_AES256_GCM))
4341 rc = crypto_aead_setkey(tfm, key, SMB3_GCM256_CRYPTKEY_SIZE);
4343 rc = crypto_aead_setkey(tfm, key, SMB3_GCM128_CRYPTKEY_SIZE);
4346 cifs_server_dbg(VFS, "%s: Failed to set aead key %d\n", __func__, rc);
4350 rc = crypto_aead_setauthsize(tfm, SMB2_SIGNATURE_SIZE);
4352 cifs_server_dbg(VFS, "%s: Failed to set authsize %d\n", __func__, rc);
4356 req = aead_request_alloc(tfm, GFP_KERNEL);
4358 cifs_server_dbg(VFS, "%s: Failed to alloc aead request\n", __func__);
4363 memcpy(sign, &tr_hdr->Signature, SMB2_SIGNATURE_SIZE);
4364 crypt_len += SMB2_SIGNATURE_SIZE;
4367 sg = init_sg(num_rqst, rqst, sign);
4369 cifs_server_dbg(VFS, "%s: Failed to init sg\n", __func__);
4374 iv_len = crypto_aead_ivsize(tfm);
4375 iv = kzalloc(iv_len, GFP_KERNEL);
4377 cifs_server_dbg(VFS, "%s: Failed to alloc iv\n", __func__);
4382 if ((server->cipher_type == SMB2_ENCRYPTION_AES128_GCM) ||
4383 (server->cipher_type == SMB2_ENCRYPTION_AES256_GCM))
4384 memcpy(iv, (char *)tr_hdr->Nonce, SMB3_AES_GCM_NONCE);
4387 memcpy(iv + 1, (char *)tr_hdr->Nonce, SMB3_AES_CCM_NONCE);
4390 aead_request_set_crypt(req, sg, sg, crypt_len, iv);
4391 aead_request_set_ad(req, assoc_data_len);
4393 aead_request_set_callback(req, CRYPTO_TFM_REQ_MAY_BACKLOG,
4394 crypto_req_done, &wait);
4396 rc = crypto_wait_req(enc ? crypto_aead_encrypt(req)
4397 : crypto_aead_decrypt(req), &wait);
4400 memcpy(&tr_hdr->Signature, sign, SMB2_SIGNATURE_SIZE);
4411 smb3_free_compound_rqst(int num_rqst, struct smb_rqst *rqst)
4415 for (i = 0; i < num_rqst; i++) {
4416 if (rqst[i].rq_pages) {
4417 for (j = rqst[i].rq_npages - 1; j >= 0; j--)
4418 put_page(rqst[i].rq_pages[j]);
4419 kfree(rqst[i].rq_pages);
4425 * This function will initialize new_rq and encrypt the content.
4426 * The first entry, new_rq[0], only contains a single iov which contains
4427 * a smb2_transform_hdr and is pre-allocated by the caller.
4428 * This function then populates new_rq[1+] with the content from olq_rq[0+].
4430 * The end result is an array of smb_rqst structures where the first structure
4431 * only contains a single iov for the transform header which we then can pass
4432 * to crypt_message().
4434 * new_rq[0].rq_iov[0] : smb2_transform_hdr pre-allocated by the caller
4435 * new_rq[1+].rq_iov[*] == old_rq[0+].rq_iov[*] : SMB2/3 requests
4438 smb3_init_transform_rq(struct TCP_Server_Info *server, int num_rqst,
4439 struct smb_rqst *new_rq, struct smb_rqst *old_rq)
4441 struct page **pages;
4442 struct smb2_transform_hdr *tr_hdr = new_rq[0].rq_iov[0].iov_base;
4443 unsigned int npages;
4444 unsigned int orig_len = 0;
4448 for (i = 1; i < num_rqst; i++) {
4449 npages = old_rq[i - 1].rq_npages;
4450 pages = kmalloc_array(npages, sizeof(struct page *),
4455 new_rq[i].rq_pages = pages;
4456 new_rq[i].rq_npages = npages;
4457 new_rq[i].rq_offset = old_rq[i - 1].rq_offset;
4458 new_rq[i].rq_pagesz = old_rq[i - 1].rq_pagesz;
4459 new_rq[i].rq_tailsz = old_rq[i - 1].rq_tailsz;
4460 new_rq[i].rq_iov = old_rq[i - 1].rq_iov;
4461 new_rq[i].rq_nvec = old_rq[i - 1].rq_nvec;
4463 orig_len += smb_rqst_len(server, &old_rq[i - 1]);
4465 for (j = 0; j < npages; j++) {
4466 pages[j] = alloc_page(GFP_KERNEL|__GFP_HIGHMEM);
4471 /* copy pages form the old */
4472 for (j = 0; j < npages; j++) {
4474 unsigned int offset, len;
4476 rqst_page_get_length(&new_rq[i], j, &len, &offset);
4478 dst = (char *) kmap(new_rq[i].rq_pages[j]) + offset;
4479 src = (char *) kmap(old_rq[i - 1].rq_pages[j]) + offset;
4481 memcpy(dst, src, len);
4482 kunmap(new_rq[i].rq_pages[j]);
4483 kunmap(old_rq[i - 1].rq_pages[j]);
4487 /* fill the 1st iov with a transform header */
4488 fill_transform_hdr(tr_hdr, orig_len, old_rq, server->cipher_type);
4490 rc = crypt_message(server, num_rqst, new_rq, 1);
4491 cifs_dbg(FYI, "Encrypt message returned %d\n", rc);
4498 smb3_free_compound_rqst(num_rqst - 1, &new_rq[1]);
4503 smb3_is_transform_hdr(void *buf)
4505 struct smb2_transform_hdr *trhdr = buf;
4507 return trhdr->ProtocolId == SMB2_TRANSFORM_PROTO_NUM;
4511 decrypt_raw_data(struct TCP_Server_Info *server, char *buf,
4512 unsigned int buf_data_size, struct page **pages,
4513 unsigned int npages, unsigned int page_data_size,
4517 struct smb_rqst rqst = {NULL};
4520 iov[0].iov_base = buf;
4521 iov[0].iov_len = sizeof(struct smb2_transform_hdr);
4522 iov[1].iov_base = buf + sizeof(struct smb2_transform_hdr);
4523 iov[1].iov_len = buf_data_size;
4527 rqst.rq_pages = pages;
4528 rqst.rq_npages = npages;
4529 rqst.rq_pagesz = PAGE_SIZE;
4530 rqst.rq_tailsz = (page_data_size % PAGE_SIZE) ? : PAGE_SIZE;
4532 rc = crypt_message(server, 1, &rqst, 0);
4533 cifs_dbg(FYI, "Decrypt message returned %d\n", rc);
4538 memmove(buf, iov[1].iov_base, buf_data_size);
4541 server->total_read = buf_data_size + page_data_size;
4547 read_data_into_pages(struct TCP_Server_Info *server, struct page **pages,
4548 unsigned int npages, unsigned int len)
4553 for (i = 0; i < npages; i++) {
4554 struct page *page = pages[i];
4558 if (len >= PAGE_SIZE) {
4559 /* enough data to fill the page */
4563 zero_user(page, len, PAGE_SIZE - len);
4566 length = cifs_read_page_from_socket(server, page, 0, n);
4569 server->total_read += length;
4576 init_read_bvec(struct page **pages, unsigned int npages, unsigned int data_size,
4577 unsigned int cur_off, struct bio_vec **page_vec)
4579 struct bio_vec *bvec;
4582 bvec = kcalloc(npages, sizeof(struct bio_vec), GFP_KERNEL);
4586 for (i = 0; i < npages; i++) {
4587 bvec[i].bv_page = pages[i];
4588 bvec[i].bv_offset = (i == 0) ? cur_off : 0;
4589 bvec[i].bv_len = min_t(unsigned int, PAGE_SIZE, data_size);
4590 data_size -= bvec[i].bv_len;
4593 if (data_size != 0) {
4594 cifs_dbg(VFS, "%s: something went wrong\n", __func__);
4604 handle_read_data(struct TCP_Server_Info *server, struct mid_q_entry *mid,
4605 char *buf, unsigned int buf_len, struct page **pages,
4606 unsigned int npages, unsigned int page_data_size,
4609 unsigned int data_offset;
4610 unsigned int data_len;
4611 unsigned int cur_off;
4612 unsigned int cur_page_idx;
4613 unsigned int pad_len;
4614 struct cifs_readdata *rdata = mid->callback_data;
4615 struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)buf;
4616 struct bio_vec *bvec = NULL;
4617 struct iov_iter iter;
4620 bool use_rdma_mr = false;
4622 if (shdr->Command != SMB2_READ) {
4623 cifs_server_dbg(VFS, "only big read responses are supported\n");
4627 if (server->ops->is_session_expired &&
4628 server->ops->is_session_expired(buf)) {
4630 cifs_reconnect(server);
4634 if (server->ops->is_status_pending &&
4635 server->ops->is_status_pending(buf, server))
4638 /* set up first two iov to get credits */
4639 rdata->iov[0].iov_base = buf;
4640 rdata->iov[0].iov_len = 0;
4641 rdata->iov[1].iov_base = buf;
4642 rdata->iov[1].iov_len =
4643 min_t(unsigned int, buf_len, server->vals->read_rsp_size);
4644 cifs_dbg(FYI, "0: iov_base=%p iov_len=%zu\n",
4645 rdata->iov[0].iov_base, rdata->iov[0].iov_len);
4646 cifs_dbg(FYI, "1: iov_base=%p iov_len=%zu\n",
4647 rdata->iov[1].iov_base, rdata->iov[1].iov_len);
4649 rdata->result = server->ops->map_error(buf, true);
4650 if (rdata->result != 0) {
4651 cifs_dbg(FYI, "%s: server returned error %d\n",
4652 __func__, rdata->result);
4653 /* normal error on read response */
4655 mid->mid_state = MID_RESPONSE_RECEIVED;
4657 dequeue_mid(mid, false);
4661 data_offset = server->ops->read_data_offset(buf);
4662 #ifdef CONFIG_CIFS_SMB_DIRECT
4663 use_rdma_mr = rdata->mr;
4665 data_len = server->ops->read_data_length(buf, use_rdma_mr);
4667 if (data_offset < server->vals->read_rsp_size) {
4669 * win2k8 sometimes sends an offset of 0 when the read
4670 * is beyond the EOF. Treat it as if the data starts just after
4673 cifs_dbg(FYI, "%s: data offset (%u) inside read response header\n",
4674 __func__, data_offset);
4675 data_offset = server->vals->read_rsp_size;
4676 } else if (data_offset > MAX_CIFS_SMALL_BUFFER_SIZE) {
4677 /* data_offset is beyond the end of smallbuf */
4678 cifs_dbg(FYI, "%s: data offset (%u) beyond end of smallbuf\n",
4679 __func__, data_offset);
4680 rdata->result = -EIO;
4682 mid->mid_state = MID_RESPONSE_MALFORMED;
4684 dequeue_mid(mid, rdata->result);
4688 pad_len = data_offset - server->vals->read_rsp_size;
4690 if (buf_len <= data_offset) {
4691 /* read response payload is in pages */
4692 cur_page_idx = pad_len / PAGE_SIZE;
4693 cur_off = pad_len % PAGE_SIZE;
4695 if (cur_page_idx != 0) {
4696 /* data offset is beyond the 1st page of response */
4697 cifs_dbg(FYI, "%s: data offset (%u) beyond 1st page of response\n",
4698 __func__, data_offset);
4699 rdata->result = -EIO;
4701 mid->mid_state = MID_RESPONSE_MALFORMED;
4703 dequeue_mid(mid, rdata->result);
4707 if (data_len > page_data_size - pad_len) {
4708 /* data_len is corrupt -- discard frame */
4709 rdata->result = -EIO;
4711 mid->mid_state = MID_RESPONSE_MALFORMED;
4713 dequeue_mid(mid, rdata->result);
4717 rdata->result = init_read_bvec(pages, npages, page_data_size,
4719 if (rdata->result != 0) {
4721 mid->mid_state = MID_RESPONSE_MALFORMED;
4723 dequeue_mid(mid, rdata->result);
4727 iov_iter_bvec(&iter, WRITE, bvec, npages, data_len);
4728 } else if (buf_len >= data_offset + data_len) {
4729 /* read response payload is in buf */
4730 WARN_ONCE(npages > 0, "read data can be either in buf or in pages");
4731 iov.iov_base = buf + data_offset;
4732 iov.iov_len = data_len;
4733 iov_iter_kvec(&iter, WRITE, &iov, 1, data_len);
4735 /* read response payload cannot be in both buf and pages */
4736 WARN_ONCE(1, "buf can not contain only a part of read data");
4737 rdata->result = -EIO;
4739 mid->mid_state = MID_RESPONSE_MALFORMED;
4741 dequeue_mid(mid, rdata->result);
4745 length = rdata->copy_into_pages(server, rdata, &iter);
4753 mid->mid_state = MID_RESPONSE_RECEIVED;
4755 dequeue_mid(mid, false);
4759 struct smb2_decrypt_work {
4760 struct work_struct decrypt;
4761 struct TCP_Server_Info *server;
4762 struct page **ppages;
4764 unsigned int npages;
4769 static void smb2_decrypt_offload(struct work_struct *work)
4771 struct smb2_decrypt_work *dw = container_of(work,
4772 struct smb2_decrypt_work, decrypt);
4774 struct mid_q_entry *mid;
4776 rc = decrypt_raw_data(dw->server, dw->buf, dw->server->vals->read_rsp_size,
4777 dw->ppages, dw->npages, dw->len, true);
4779 cifs_dbg(VFS, "error decrypting rc=%d\n", rc);
4783 dw->server->lstrp = jiffies;
4784 mid = smb2_find_dequeue_mid(dw->server, dw->buf);
4786 cifs_dbg(FYI, "mid not found\n");
4788 mid->decrypted = true;
4789 rc = handle_read_data(dw->server, mid, dw->buf,
4790 dw->server->vals->read_rsp_size,
4791 dw->ppages, dw->npages, dw->len,
4794 #ifdef CONFIG_CIFS_STATS2
4795 mid->when_received = jiffies;
4797 if (dw->server->ops->is_network_name_deleted)
4798 dw->server->ops->is_network_name_deleted(dw->buf,
4803 spin_lock(&GlobalMid_Lock);
4804 if (dw->server->tcpStatus == CifsNeedReconnect) {
4805 mid->mid_state = MID_RETRY_NEEDED;
4806 spin_unlock(&GlobalMid_Lock);
4809 mid->mid_state = MID_REQUEST_SUBMITTED;
4810 mid->mid_flags &= ~(MID_DELETED);
4811 list_add_tail(&mid->qhead,
4812 &dw->server->pending_mid_q);
4813 spin_unlock(&GlobalMid_Lock);
4816 cifs_mid_q_entry_release(mid);
4820 for (i = dw->npages-1; i >= 0; i--)
4821 put_page(dw->ppages[i]);
4824 cifs_small_buf_release(dw->buf);
4830 receive_encrypted_read(struct TCP_Server_Info *server, struct mid_q_entry **mid,
4833 char *buf = server->smallbuf;
4834 struct smb2_transform_hdr *tr_hdr = (struct smb2_transform_hdr *)buf;
4835 unsigned int npages;
4836 struct page **pages;
4838 unsigned int buflen = server->pdu_size;
4841 struct smb2_decrypt_work *dw;
4844 len = min_t(unsigned int, buflen, server->vals->read_rsp_size +
4845 sizeof(struct smb2_transform_hdr)) - HEADER_SIZE(server) + 1;
4847 rc = cifs_read_from_socket(server, buf + HEADER_SIZE(server) - 1, len);
4850 server->total_read += rc;
4852 len = le32_to_cpu(tr_hdr->OriginalMessageSize) -
4853 server->vals->read_rsp_size;
4854 npages = DIV_ROUND_UP(len, PAGE_SIZE);
4856 pages = kmalloc_array(npages, sizeof(struct page *), GFP_KERNEL);
4862 for (; i < npages; i++) {
4863 pages[i] = alloc_page(GFP_KERNEL|__GFP_HIGHMEM);
4870 /* read read data into pages */
4871 rc = read_data_into_pages(server, pages, npages, len);
4875 rc = cifs_discard_remaining_data(server);
4880 * For large reads, offload to different thread for better performance,
4881 * use more cores decrypting which can be expensive
4884 if ((server->min_offload) && (server->in_flight > 1) &&
4885 (server->pdu_size >= server->min_offload)) {
4886 dw = kmalloc(sizeof(struct smb2_decrypt_work), GFP_KERNEL);
4888 goto non_offloaded_decrypt;
4890 dw->buf = server->smallbuf;
4891 server->smallbuf = (char *)cifs_small_buf_get();
4893 INIT_WORK(&dw->decrypt, smb2_decrypt_offload);
4895 dw->npages = npages;
4896 dw->server = server;
4899 queue_work(decrypt_wq, &dw->decrypt);
4900 *num_mids = 0; /* worker thread takes care of finding mid */
4904 non_offloaded_decrypt:
4905 rc = decrypt_raw_data(server, buf, server->vals->read_rsp_size,
4906 pages, npages, len, false);
4910 *mid = smb2_find_mid(server, buf);
4912 cifs_dbg(FYI, "mid not found\n");
4914 cifs_dbg(FYI, "mid found\n");
4915 (*mid)->decrypted = true;
4916 rc = handle_read_data(server, *mid, buf,
4917 server->vals->read_rsp_size,
4918 pages, npages, len, false);
4920 if (server->ops->is_network_name_deleted) {
4921 server->ops->is_network_name_deleted(buf,
4928 for (i = i - 1; i >= 0; i--)
4933 cifs_discard_remaining_data(server);
4938 receive_encrypted_standard(struct TCP_Server_Info *server,
4939 struct mid_q_entry **mids, char **bufs,
4943 char *buf = server->smallbuf;
4944 struct smb2_sync_hdr *shdr;
4945 unsigned int pdu_length = server->pdu_size;
4946 unsigned int buf_size;
4947 struct mid_q_entry *mid_entry;
4949 char *next_buffer = NULL;
4953 /* switch to large buffer if too big for a small one */
4954 if (pdu_length > MAX_CIFS_SMALL_BUFFER_SIZE) {
4955 server->large_buf = true;
4956 memcpy(server->bigbuf, buf, server->total_read);
4957 buf = server->bigbuf;
4960 /* now read the rest */
4961 length = cifs_read_from_socket(server, buf + HEADER_SIZE(server) - 1,
4962 pdu_length - HEADER_SIZE(server) + 1);
4965 server->total_read += length;
4967 buf_size = pdu_length - sizeof(struct smb2_transform_hdr);
4968 length = decrypt_raw_data(server, buf, buf_size, NULL, 0, 0, false);
4972 next_is_large = server->large_buf;
4974 shdr = (struct smb2_sync_hdr *)buf;
4975 if (shdr->NextCommand) {
4977 next_buffer = (char *)cifs_buf_get();
4979 next_buffer = (char *)cifs_small_buf_get();
4981 buf + le32_to_cpu(shdr->NextCommand),
4982 pdu_length - le32_to_cpu(shdr->NextCommand));
4985 mid_entry = smb2_find_mid(server, buf);
4986 if (mid_entry == NULL)
4987 cifs_dbg(FYI, "mid not found\n");
4989 cifs_dbg(FYI, "mid found\n");
4990 mid_entry->decrypted = true;
4991 mid_entry->resp_buf_size = server->pdu_size;
4994 if (*num_mids >= MAX_COMPOUND) {
4995 cifs_server_dbg(VFS, "too many PDUs in compound\n");
4998 bufs[*num_mids] = buf;
4999 mids[(*num_mids)++] = mid_entry;
5001 if (mid_entry && mid_entry->handle)
5002 ret = mid_entry->handle(server, mid_entry);
5004 ret = cifs_handle_standard(server, mid_entry);
5006 if (ret == 0 && shdr->NextCommand) {
5007 pdu_length -= le32_to_cpu(shdr->NextCommand);
5008 server->large_buf = next_is_large;
5010 server->bigbuf = buf = next_buffer;
5012 server->smallbuf = buf = next_buffer;
5014 } else if (ret != 0) {
5016 * ret != 0 here means that we didn't get to handle_mid() thus
5017 * server->smallbuf and server->bigbuf are still valid. We need
5018 * to free next_buffer because it is not going to be used
5022 free_rsp_buf(CIFS_LARGE_BUFFER, next_buffer);
5024 free_rsp_buf(CIFS_SMALL_BUFFER, next_buffer);
5031 smb3_receive_transform(struct TCP_Server_Info *server,
5032 struct mid_q_entry **mids, char **bufs, int *num_mids)
5034 char *buf = server->smallbuf;
5035 unsigned int pdu_length = server->pdu_size;
5036 struct smb2_transform_hdr *tr_hdr = (struct smb2_transform_hdr *)buf;
5037 unsigned int orig_len = le32_to_cpu(tr_hdr->OriginalMessageSize);
5039 if (pdu_length < sizeof(struct smb2_transform_hdr) +
5040 sizeof(struct smb2_sync_hdr)) {
5041 cifs_server_dbg(VFS, "Transform message is too small (%u)\n",
5043 cifs_reconnect(server);
5044 return -ECONNABORTED;
5047 if (pdu_length < orig_len + sizeof(struct smb2_transform_hdr)) {
5048 cifs_server_dbg(VFS, "Transform message is broken\n");
5049 cifs_reconnect(server);
5050 return -ECONNABORTED;
5053 /* TODO: add support for compounds containing READ. */
5054 if (pdu_length > CIFSMaxBufSize + MAX_HEADER_SIZE(server)) {
5055 return receive_encrypted_read(server, &mids[0], num_mids);
5058 return receive_encrypted_standard(server, mids, bufs, num_mids);
5062 smb3_handle_read_data(struct TCP_Server_Info *server, struct mid_q_entry *mid)
5064 char *buf = server->large_buf ? server->bigbuf : server->smallbuf;
5066 return handle_read_data(server, mid, buf, server->pdu_size,
5071 smb2_next_header(char *buf)
5073 struct smb2_sync_hdr *hdr = (struct smb2_sync_hdr *)buf;
5074 struct smb2_transform_hdr *t_hdr = (struct smb2_transform_hdr *)buf;
5076 if (hdr->ProtocolId == SMB2_TRANSFORM_PROTO_NUM)
5077 return sizeof(struct smb2_transform_hdr) +
5078 le32_to_cpu(t_hdr->OriginalMessageSize);
5080 return le32_to_cpu(hdr->NextCommand);
5084 smb2_make_node(unsigned int xid, struct inode *inode,
5085 struct dentry *dentry, struct cifs_tcon *tcon,
5086 const char *full_path, umode_t mode, dev_t dev)
5088 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
5090 FILE_ALL_INFO *buf = NULL;
5091 struct cifs_io_parms io_parms = {0};
5093 struct cifs_fid fid;
5094 struct cifs_open_parms oparms;
5095 unsigned int bytes_written;
5096 struct win_dev *pdev;
5100 * Check if mounted with mount parm 'sfu' mount parm.
5101 * SFU emulation should work with all servers, but only
5102 * supports block and char device (no socket & fifo),
5103 * and was used by default in earlier versions of Windows
5105 if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL))
5109 * TODO: Add ability to create instead via reparse point. Windows (e.g.
5110 * their current NFS server) uses this approach to expose special files
5111 * over SMB2/SMB3 and Samba will do this with SMB3.1.1 POSIX Extensions
5114 if (!S_ISCHR(mode) && !S_ISBLK(mode))
5117 cifs_dbg(FYI, "sfu compat create special file\n");
5119 buf = kmalloc(sizeof(FILE_ALL_INFO), GFP_KERNEL);
5126 oparms.cifs_sb = cifs_sb;
5127 oparms.desired_access = GENERIC_WRITE;
5128 oparms.create_options = cifs_create_options(cifs_sb, CREATE_NOT_DIR |
5129 CREATE_OPTION_SPECIAL);
5130 oparms.disposition = FILE_CREATE;
5131 oparms.path = full_path;
5133 oparms.reconnect = false;
5135 if (tcon->ses->server->oplocks)
5136 oplock = REQ_OPLOCK;
5139 rc = tcon->ses->server->ops->open(xid, &oparms, &oplock, buf);
5144 * BB Do not bother to decode buf since no local inode yet to put
5145 * timestamps in, but we can reuse it safely.
5148 pdev = (struct win_dev *)buf;
5149 io_parms.pid = current->tgid;
5150 io_parms.tcon = tcon;
5151 io_parms.offset = 0;
5152 io_parms.length = sizeof(struct win_dev);
5153 iov[1].iov_base = buf;
5154 iov[1].iov_len = sizeof(struct win_dev);
5155 if (S_ISCHR(mode)) {
5156 memcpy(pdev->type, "IntxCHR", 8);
5157 pdev->major = cpu_to_le64(MAJOR(dev));
5158 pdev->minor = cpu_to_le64(MINOR(dev));
5159 rc = tcon->ses->server->ops->sync_write(xid, &fid, &io_parms,
5160 &bytes_written, iov, 1);
5161 } else if (S_ISBLK(mode)) {
5162 memcpy(pdev->type, "IntxBLK", 8);
5163 pdev->major = cpu_to_le64(MAJOR(dev));
5164 pdev->minor = cpu_to_le64(MINOR(dev));
5165 rc = tcon->ses->server->ops->sync_write(xid, &fid, &io_parms,
5166 &bytes_written, iov, 1);
5168 tcon->ses->server->ops->close(xid, tcon, &fid);
5171 /* FIXME: add code here to set EAs */
5178 struct smb_version_operations smb20_operations = {
5179 .compare_fids = smb2_compare_fids,
5180 .setup_request = smb2_setup_request,
5181 .setup_async_request = smb2_setup_async_request,
5182 .check_receive = smb2_check_receive,
5183 .add_credits = smb2_add_credits,
5184 .set_credits = smb2_set_credits,
5185 .get_credits_field = smb2_get_credits_field,
5186 .get_credits = smb2_get_credits,
5187 .wait_mtu_credits = cifs_wait_mtu_credits,
5188 .get_next_mid = smb2_get_next_mid,
5189 .revert_current_mid = smb2_revert_current_mid,
5190 .read_data_offset = smb2_read_data_offset,
5191 .read_data_length = smb2_read_data_length,
5192 .map_error = map_smb2_to_linux_error,
5193 .find_mid = smb2_find_mid,
5194 .check_message = smb2_check_message,
5195 .dump_detail = smb2_dump_detail,
5196 .clear_stats = smb2_clear_stats,
5197 .print_stats = smb2_print_stats,
5198 .is_oplock_break = smb2_is_valid_oplock_break,
5199 .handle_cancelled_mid = smb2_handle_cancelled_mid,
5200 .downgrade_oplock = smb2_downgrade_oplock,
5201 .need_neg = smb2_need_neg,
5202 .negotiate = smb2_negotiate,
5203 .negotiate_wsize = smb2_negotiate_wsize,
5204 .negotiate_rsize = smb2_negotiate_rsize,
5205 .sess_setup = SMB2_sess_setup,
5206 .logoff = SMB2_logoff,
5207 .tree_connect = SMB2_tcon,
5208 .tree_disconnect = SMB2_tdis,
5209 .qfs_tcon = smb2_qfs_tcon,
5210 .is_path_accessible = smb2_is_path_accessible,
5211 .can_echo = smb2_can_echo,
5213 .query_path_info = smb2_query_path_info,
5214 .get_srv_inum = smb2_get_srv_inum,
5215 .query_file_info = smb2_query_file_info,
5216 .set_path_size = smb2_set_path_size,
5217 .set_file_size = smb2_set_file_size,
5218 .set_file_info = smb2_set_file_info,
5219 .set_compression = smb2_set_compression,
5220 .mkdir = smb2_mkdir,
5221 .mkdir_setinfo = smb2_mkdir_setinfo,
5222 .rmdir = smb2_rmdir,
5223 .unlink = smb2_unlink,
5224 .rename = smb2_rename_path,
5225 .create_hardlink = smb2_create_hardlink,
5226 .query_symlink = smb2_query_symlink,
5227 .query_mf_symlink = smb3_query_mf_symlink,
5228 .create_mf_symlink = smb3_create_mf_symlink,
5229 .open = smb2_open_file,
5230 .set_fid = smb2_set_fid,
5231 .close = smb2_close_file,
5232 .flush = smb2_flush_file,
5233 .async_readv = smb2_async_readv,
5234 .async_writev = smb2_async_writev,
5235 .sync_read = smb2_sync_read,
5236 .sync_write = smb2_sync_write,
5237 .query_dir_first = smb2_query_dir_first,
5238 .query_dir_next = smb2_query_dir_next,
5239 .close_dir = smb2_close_dir,
5240 .calc_smb_size = smb2_calc_size,
5241 .is_status_pending = smb2_is_status_pending,
5242 .is_session_expired = smb2_is_session_expired,
5243 .oplock_response = smb2_oplock_response,
5244 .queryfs = smb2_queryfs,
5245 .mand_lock = smb2_mand_lock,
5246 .mand_unlock_range = smb2_unlock_range,
5247 .push_mand_locks = smb2_push_mandatory_locks,
5248 .get_lease_key = smb2_get_lease_key,
5249 .set_lease_key = smb2_set_lease_key,
5250 .new_lease_key = smb2_new_lease_key,
5251 .calc_signature = smb2_calc_signature,
5252 .is_read_op = smb2_is_read_op,
5253 .set_oplock_level = smb2_set_oplock_level,
5254 .create_lease_buf = smb2_create_lease_buf,
5255 .parse_lease_buf = smb2_parse_lease_buf,
5256 .copychunk_range = smb2_copychunk_range,
5257 .wp_retry_size = smb2_wp_retry_size,
5258 .dir_needs_close = smb2_dir_needs_close,
5259 .get_dfs_refer = smb2_get_dfs_refer,
5260 .select_sectype = smb2_select_sectype,
5261 #ifdef CONFIG_CIFS_XATTR
5262 .query_all_EAs = smb2_query_eas,
5263 .set_EA = smb2_set_ea,
5264 #endif /* CIFS_XATTR */
5265 .get_acl = get_smb2_acl,
5266 .get_acl_by_fid = get_smb2_acl_by_fid,
5267 .set_acl = set_smb2_acl,
5268 .next_header = smb2_next_header,
5269 .ioctl_query_info = smb2_ioctl_query_info,
5270 .make_node = smb2_make_node,
5271 .fiemap = smb3_fiemap,
5272 .llseek = smb3_llseek,
5273 .is_status_io_timeout = smb2_is_status_io_timeout,
5274 .is_network_name_deleted = smb2_is_network_name_deleted,
5277 struct smb_version_operations smb21_operations = {
5278 .compare_fids = smb2_compare_fids,
5279 .setup_request = smb2_setup_request,
5280 .setup_async_request = smb2_setup_async_request,
5281 .check_receive = smb2_check_receive,
5282 .add_credits = smb2_add_credits,
5283 .set_credits = smb2_set_credits,
5284 .get_credits_field = smb2_get_credits_field,
5285 .get_credits = smb2_get_credits,
5286 .wait_mtu_credits = smb2_wait_mtu_credits,
5287 .adjust_credits = smb2_adjust_credits,
5288 .get_next_mid = smb2_get_next_mid,
5289 .revert_current_mid = smb2_revert_current_mid,
5290 .read_data_offset = smb2_read_data_offset,
5291 .read_data_length = smb2_read_data_length,
5292 .map_error = map_smb2_to_linux_error,
5293 .find_mid = smb2_find_mid,
5294 .check_message = smb2_check_message,
5295 .dump_detail = smb2_dump_detail,
5296 .clear_stats = smb2_clear_stats,
5297 .print_stats = smb2_print_stats,
5298 .is_oplock_break = smb2_is_valid_oplock_break,
5299 .handle_cancelled_mid = smb2_handle_cancelled_mid,
5300 .downgrade_oplock = smb2_downgrade_oplock,
5301 .need_neg = smb2_need_neg,
5302 .negotiate = smb2_negotiate,
5303 .negotiate_wsize = smb2_negotiate_wsize,
5304 .negotiate_rsize = smb2_negotiate_rsize,
5305 .sess_setup = SMB2_sess_setup,
5306 .logoff = SMB2_logoff,
5307 .tree_connect = SMB2_tcon,
5308 .tree_disconnect = SMB2_tdis,
5309 .qfs_tcon = smb2_qfs_tcon,
5310 .is_path_accessible = smb2_is_path_accessible,
5311 .can_echo = smb2_can_echo,
5313 .query_path_info = smb2_query_path_info,
5314 .get_srv_inum = smb2_get_srv_inum,
5315 .query_file_info = smb2_query_file_info,
5316 .set_path_size = smb2_set_path_size,
5317 .set_file_size = smb2_set_file_size,
5318 .set_file_info = smb2_set_file_info,
5319 .set_compression = smb2_set_compression,
5320 .mkdir = smb2_mkdir,
5321 .mkdir_setinfo = smb2_mkdir_setinfo,
5322 .rmdir = smb2_rmdir,
5323 .unlink = smb2_unlink,
5324 .rename = smb2_rename_path,
5325 .create_hardlink = smb2_create_hardlink,
5326 .query_symlink = smb2_query_symlink,
5327 .query_mf_symlink = smb3_query_mf_symlink,
5328 .create_mf_symlink = smb3_create_mf_symlink,
5329 .open = smb2_open_file,
5330 .set_fid = smb2_set_fid,
5331 .close = smb2_close_file,
5332 .flush = smb2_flush_file,
5333 .async_readv = smb2_async_readv,
5334 .async_writev = smb2_async_writev,
5335 .sync_read = smb2_sync_read,
5336 .sync_write = smb2_sync_write,
5337 .query_dir_first = smb2_query_dir_first,
5338 .query_dir_next = smb2_query_dir_next,
5339 .close_dir = smb2_close_dir,
5340 .calc_smb_size = smb2_calc_size,
5341 .is_status_pending = smb2_is_status_pending,
5342 .is_session_expired = smb2_is_session_expired,
5343 .oplock_response = smb2_oplock_response,
5344 .queryfs = smb2_queryfs,
5345 .mand_lock = smb2_mand_lock,
5346 .mand_unlock_range = smb2_unlock_range,
5347 .push_mand_locks = smb2_push_mandatory_locks,
5348 .get_lease_key = smb2_get_lease_key,
5349 .set_lease_key = smb2_set_lease_key,
5350 .new_lease_key = smb2_new_lease_key,
5351 .calc_signature = smb2_calc_signature,
5352 .is_read_op = smb21_is_read_op,
5353 .set_oplock_level = smb21_set_oplock_level,
5354 .create_lease_buf = smb2_create_lease_buf,
5355 .parse_lease_buf = smb2_parse_lease_buf,
5356 .copychunk_range = smb2_copychunk_range,
5357 .wp_retry_size = smb2_wp_retry_size,
5358 .dir_needs_close = smb2_dir_needs_close,
5359 .enum_snapshots = smb3_enum_snapshots,
5360 .notify = smb3_notify,
5361 .get_dfs_refer = smb2_get_dfs_refer,
5362 .select_sectype = smb2_select_sectype,
5363 #ifdef CONFIG_CIFS_XATTR
5364 .query_all_EAs = smb2_query_eas,
5365 .set_EA = smb2_set_ea,
5366 #endif /* CIFS_XATTR */
5367 .get_acl = get_smb2_acl,
5368 .get_acl_by_fid = get_smb2_acl_by_fid,
5369 .set_acl = set_smb2_acl,
5370 .next_header = smb2_next_header,
5371 .ioctl_query_info = smb2_ioctl_query_info,
5372 .make_node = smb2_make_node,
5373 .fiemap = smb3_fiemap,
5374 .llseek = smb3_llseek,
5375 .is_status_io_timeout = smb2_is_status_io_timeout,
5376 .is_network_name_deleted = smb2_is_network_name_deleted,
5379 struct smb_version_operations smb30_operations = {
5380 .compare_fids = smb2_compare_fids,
5381 .setup_request = smb2_setup_request,
5382 .setup_async_request = smb2_setup_async_request,
5383 .check_receive = smb2_check_receive,
5384 .add_credits = smb2_add_credits,
5385 .set_credits = smb2_set_credits,
5386 .get_credits_field = smb2_get_credits_field,
5387 .get_credits = smb2_get_credits,
5388 .wait_mtu_credits = smb2_wait_mtu_credits,
5389 .adjust_credits = smb2_adjust_credits,
5390 .get_next_mid = smb2_get_next_mid,
5391 .revert_current_mid = smb2_revert_current_mid,
5392 .read_data_offset = smb2_read_data_offset,
5393 .read_data_length = smb2_read_data_length,
5394 .map_error = map_smb2_to_linux_error,
5395 .find_mid = smb2_find_mid,
5396 .check_message = smb2_check_message,
5397 .dump_detail = smb2_dump_detail,
5398 .clear_stats = smb2_clear_stats,
5399 .print_stats = smb2_print_stats,
5400 .dump_share_caps = smb2_dump_share_caps,
5401 .is_oplock_break = smb2_is_valid_oplock_break,
5402 .handle_cancelled_mid = smb2_handle_cancelled_mid,
5403 .downgrade_oplock = smb3_downgrade_oplock,
5404 .need_neg = smb2_need_neg,
5405 .negotiate = smb2_negotiate,
5406 .negotiate_wsize = smb3_negotiate_wsize,
5407 .negotiate_rsize = smb3_negotiate_rsize,
5408 .sess_setup = SMB2_sess_setup,
5409 .logoff = SMB2_logoff,
5410 .tree_connect = SMB2_tcon,
5411 .tree_disconnect = SMB2_tdis,
5412 .qfs_tcon = smb3_qfs_tcon,
5413 .is_path_accessible = smb2_is_path_accessible,
5414 .can_echo = smb2_can_echo,
5416 .query_path_info = smb2_query_path_info,
5417 /* WSL tags introduced long after smb2.1, enable for SMB3, 3.11 only */
5418 .query_reparse_tag = smb2_query_reparse_tag,
5419 .get_srv_inum = smb2_get_srv_inum,
5420 .query_file_info = smb2_query_file_info,
5421 .set_path_size = smb2_set_path_size,
5422 .set_file_size = smb2_set_file_size,
5423 .set_file_info = smb2_set_file_info,
5424 .set_compression = smb2_set_compression,
5425 .mkdir = smb2_mkdir,
5426 .mkdir_setinfo = smb2_mkdir_setinfo,
5427 .rmdir = smb2_rmdir,
5428 .unlink = smb2_unlink,
5429 .rename = smb2_rename_path,
5430 .create_hardlink = smb2_create_hardlink,
5431 .query_symlink = smb2_query_symlink,
5432 .query_mf_symlink = smb3_query_mf_symlink,
5433 .create_mf_symlink = smb3_create_mf_symlink,
5434 .open = smb2_open_file,
5435 .set_fid = smb2_set_fid,
5436 .close = smb2_close_file,
5437 .close_getattr = smb2_close_getattr,
5438 .flush = smb2_flush_file,
5439 .async_readv = smb2_async_readv,
5440 .async_writev = smb2_async_writev,
5441 .sync_read = smb2_sync_read,
5442 .sync_write = smb2_sync_write,
5443 .query_dir_first = smb2_query_dir_first,
5444 .query_dir_next = smb2_query_dir_next,
5445 .close_dir = smb2_close_dir,
5446 .calc_smb_size = smb2_calc_size,
5447 .is_status_pending = smb2_is_status_pending,
5448 .is_session_expired = smb2_is_session_expired,
5449 .oplock_response = smb2_oplock_response,
5450 .queryfs = smb2_queryfs,
5451 .mand_lock = smb2_mand_lock,
5452 .mand_unlock_range = smb2_unlock_range,
5453 .push_mand_locks = smb2_push_mandatory_locks,
5454 .get_lease_key = smb2_get_lease_key,
5455 .set_lease_key = smb2_set_lease_key,
5456 .new_lease_key = smb2_new_lease_key,
5457 .generate_signingkey = generate_smb30signingkey,
5458 .calc_signature = smb3_calc_signature,
5459 .set_integrity = smb3_set_integrity,
5460 .is_read_op = smb21_is_read_op,
5461 .set_oplock_level = smb3_set_oplock_level,
5462 .create_lease_buf = smb3_create_lease_buf,
5463 .parse_lease_buf = smb3_parse_lease_buf,
5464 .copychunk_range = smb2_copychunk_range,
5465 .duplicate_extents = smb2_duplicate_extents,
5466 .validate_negotiate = smb3_validate_negotiate,
5467 .wp_retry_size = smb2_wp_retry_size,
5468 .dir_needs_close = smb2_dir_needs_close,
5469 .fallocate = smb3_fallocate,
5470 .enum_snapshots = smb3_enum_snapshots,
5471 .notify = smb3_notify,
5472 .init_transform_rq = smb3_init_transform_rq,
5473 .is_transform_hdr = smb3_is_transform_hdr,
5474 .receive_transform = smb3_receive_transform,
5475 .get_dfs_refer = smb2_get_dfs_refer,
5476 .select_sectype = smb2_select_sectype,
5477 #ifdef CONFIG_CIFS_XATTR
5478 .query_all_EAs = smb2_query_eas,
5479 .set_EA = smb2_set_ea,
5480 #endif /* CIFS_XATTR */
5481 .get_acl = get_smb2_acl,
5482 .get_acl_by_fid = get_smb2_acl_by_fid,
5483 .set_acl = set_smb2_acl,
5484 .next_header = smb2_next_header,
5485 .ioctl_query_info = smb2_ioctl_query_info,
5486 .make_node = smb2_make_node,
5487 .fiemap = smb3_fiemap,
5488 .llseek = smb3_llseek,
5489 .is_status_io_timeout = smb2_is_status_io_timeout,
5490 .is_network_name_deleted = smb2_is_network_name_deleted,
5493 struct smb_version_operations smb311_operations = {
5494 .compare_fids = smb2_compare_fids,
5495 .setup_request = smb2_setup_request,
5496 .setup_async_request = smb2_setup_async_request,
5497 .check_receive = smb2_check_receive,
5498 .add_credits = smb2_add_credits,
5499 .set_credits = smb2_set_credits,
5500 .get_credits_field = smb2_get_credits_field,
5501 .get_credits = smb2_get_credits,
5502 .wait_mtu_credits = smb2_wait_mtu_credits,
5503 .adjust_credits = smb2_adjust_credits,
5504 .get_next_mid = smb2_get_next_mid,
5505 .revert_current_mid = smb2_revert_current_mid,
5506 .read_data_offset = smb2_read_data_offset,
5507 .read_data_length = smb2_read_data_length,
5508 .map_error = map_smb2_to_linux_error,
5509 .find_mid = smb2_find_mid,
5510 .check_message = smb2_check_message,
5511 .dump_detail = smb2_dump_detail,
5512 .clear_stats = smb2_clear_stats,
5513 .print_stats = smb2_print_stats,
5514 .dump_share_caps = smb2_dump_share_caps,
5515 .is_oplock_break = smb2_is_valid_oplock_break,
5516 .handle_cancelled_mid = smb2_handle_cancelled_mid,
5517 .downgrade_oplock = smb3_downgrade_oplock,
5518 .need_neg = smb2_need_neg,
5519 .negotiate = smb2_negotiate,
5520 .negotiate_wsize = smb3_negotiate_wsize,
5521 .negotiate_rsize = smb3_negotiate_rsize,
5522 .sess_setup = SMB2_sess_setup,
5523 .logoff = SMB2_logoff,
5524 .tree_connect = SMB2_tcon,
5525 .tree_disconnect = SMB2_tdis,
5526 .qfs_tcon = smb3_qfs_tcon,
5527 .is_path_accessible = smb2_is_path_accessible,
5528 .can_echo = smb2_can_echo,
5530 .query_path_info = smb2_query_path_info,
5531 .query_reparse_tag = smb2_query_reparse_tag,
5532 .get_srv_inum = smb2_get_srv_inum,
5533 .query_file_info = smb2_query_file_info,
5534 .set_path_size = smb2_set_path_size,
5535 .set_file_size = smb2_set_file_size,
5536 .set_file_info = smb2_set_file_info,
5537 .set_compression = smb2_set_compression,
5538 .mkdir = smb2_mkdir,
5539 .mkdir_setinfo = smb2_mkdir_setinfo,
5540 .posix_mkdir = smb311_posix_mkdir,
5541 .rmdir = smb2_rmdir,
5542 .unlink = smb2_unlink,
5543 .rename = smb2_rename_path,
5544 .create_hardlink = smb2_create_hardlink,
5545 .query_symlink = smb2_query_symlink,
5546 .query_mf_symlink = smb3_query_mf_symlink,
5547 .create_mf_symlink = smb3_create_mf_symlink,
5548 .open = smb2_open_file,
5549 .set_fid = smb2_set_fid,
5550 .close = smb2_close_file,
5551 .close_getattr = smb2_close_getattr,
5552 .flush = smb2_flush_file,
5553 .async_readv = smb2_async_readv,
5554 .async_writev = smb2_async_writev,
5555 .sync_read = smb2_sync_read,
5556 .sync_write = smb2_sync_write,
5557 .query_dir_first = smb2_query_dir_first,
5558 .query_dir_next = smb2_query_dir_next,
5559 .close_dir = smb2_close_dir,
5560 .calc_smb_size = smb2_calc_size,
5561 .is_status_pending = smb2_is_status_pending,
5562 .is_session_expired = smb2_is_session_expired,
5563 .oplock_response = smb2_oplock_response,
5564 .queryfs = smb311_queryfs,
5565 .mand_lock = smb2_mand_lock,
5566 .mand_unlock_range = smb2_unlock_range,
5567 .push_mand_locks = smb2_push_mandatory_locks,
5568 .get_lease_key = smb2_get_lease_key,
5569 .set_lease_key = smb2_set_lease_key,
5570 .new_lease_key = smb2_new_lease_key,
5571 .generate_signingkey = generate_smb311signingkey,
5572 .calc_signature = smb3_calc_signature,
5573 .set_integrity = smb3_set_integrity,
5574 .is_read_op = smb21_is_read_op,
5575 .set_oplock_level = smb3_set_oplock_level,
5576 .create_lease_buf = smb3_create_lease_buf,
5577 .parse_lease_buf = smb3_parse_lease_buf,
5578 .copychunk_range = smb2_copychunk_range,
5579 .duplicate_extents = smb2_duplicate_extents,
5580 /* .validate_negotiate = smb3_validate_negotiate, */ /* not used in 3.11 */
5581 .wp_retry_size = smb2_wp_retry_size,
5582 .dir_needs_close = smb2_dir_needs_close,
5583 .fallocate = smb3_fallocate,
5584 .enum_snapshots = smb3_enum_snapshots,
5585 .notify = smb3_notify,
5586 .init_transform_rq = smb3_init_transform_rq,
5587 .is_transform_hdr = smb3_is_transform_hdr,
5588 .receive_transform = smb3_receive_transform,
5589 .get_dfs_refer = smb2_get_dfs_refer,
5590 .select_sectype = smb2_select_sectype,
5591 #ifdef CONFIG_CIFS_XATTR
5592 .query_all_EAs = smb2_query_eas,
5593 .set_EA = smb2_set_ea,
5594 #endif /* CIFS_XATTR */
5595 .get_acl = get_smb2_acl,
5596 .get_acl_by_fid = get_smb2_acl_by_fid,
5597 .set_acl = set_smb2_acl,
5598 .next_header = smb2_next_header,
5599 .ioctl_query_info = smb2_ioctl_query_info,
5600 .make_node = smb2_make_node,
5601 .fiemap = smb3_fiemap,
5602 .llseek = smb3_llseek,
5603 .is_status_io_timeout = smb2_is_status_io_timeout,
5604 .is_network_name_deleted = smb2_is_network_name_deleted,
5607 struct smb_version_values smb20_values = {
5608 .version_string = SMB20_VERSION_STRING,
5609 .protocol_id = SMB20_PROT_ID,
5610 .req_capabilities = 0, /* MBZ */
5611 .large_lock_type = 0,
5612 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
5613 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
5614 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
5615 .header_size = sizeof(struct smb2_sync_hdr),
5616 .header_preamble_size = 0,
5617 .max_header_size = MAX_SMB2_HDR_SIZE,
5618 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
5619 .lock_cmd = SMB2_LOCK,
5621 .cap_nt_find = SMB2_NT_FIND,
5622 .cap_large_files = SMB2_LARGE_FILES,
5623 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
5624 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
5625 .create_lease_size = sizeof(struct create_lease),
5628 struct smb_version_values smb21_values = {
5629 .version_string = SMB21_VERSION_STRING,
5630 .protocol_id = SMB21_PROT_ID,
5631 .req_capabilities = 0, /* MBZ on negotiate req until SMB3 dialect */
5632 .large_lock_type = 0,
5633 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
5634 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
5635 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
5636 .header_size = sizeof(struct smb2_sync_hdr),
5637 .header_preamble_size = 0,
5638 .max_header_size = MAX_SMB2_HDR_SIZE,
5639 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
5640 .lock_cmd = SMB2_LOCK,
5642 .cap_nt_find = SMB2_NT_FIND,
5643 .cap_large_files = SMB2_LARGE_FILES,
5644 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
5645 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
5646 .create_lease_size = sizeof(struct create_lease),
5649 struct smb_version_values smb3any_values = {
5650 .version_string = SMB3ANY_VERSION_STRING,
5651 .protocol_id = SMB302_PROT_ID, /* doesn't matter, send protocol array */
5652 .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,
5653 .large_lock_type = 0,
5654 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
5655 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
5656 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
5657 .header_size = sizeof(struct smb2_sync_hdr),
5658 .header_preamble_size = 0,
5659 .max_header_size = MAX_SMB2_HDR_SIZE,
5660 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
5661 .lock_cmd = SMB2_LOCK,
5663 .cap_nt_find = SMB2_NT_FIND,
5664 .cap_large_files = SMB2_LARGE_FILES,
5665 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
5666 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
5667 .create_lease_size = sizeof(struct create_lease_v2),
5670 struct smb_version_values smbdefault_values = {
5671 .version_string = SMBDEFAULT_VERSION_STRING,
5672 .protocol_id = SMB302_PROT_ID, /* doesn't matter, send protocol array */
5673 .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,
5674 .large_lock_type = 0,
5675 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
5676 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
5677 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
5678 .header_size = sizeof(struct smb2_sync_hdr),
5679 .header_preamble_size = 0,
5680 .max_header_size = MAX_SMB2_HDR_SIZE,
5681 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
5682 .lock_cmd = SMB2_LOCK,
5684 .cap_nt_find = SMB2_NT_FIND,
5685 .cap_large_files = SMB2_LARGE_FILES,
5686 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
5687 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
5688 .create_lease_size = sizeof(struct create_lease_v2),
5691 struct smb_version_values smb30_values = {
5692 .version_string = SMB30_VERSION_STRING,
5693 .protocol_id = SMB30_PROT_ID,
5694 .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,
5695 .large_lock_type = 0,
5696 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
5697 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
5698 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
5699 .header_size = sizeof(struct smb2_sync_hdr),
5700 .header_preamble_size = 0,
5701 .max_header_size = MAX_SMB2_HDR_SIZE,
5702 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
5703 .lock_cmd = SMB2_LOCK,
5705 .cap_nt_find = SMB2_NT_FIND,
5706 .cap_large_files = SMB2_LARGE_FILES,
5707 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
5708 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
5709 .create_lease_size = sizeof(struct create_lease_v2),
5712 struct smb_version_values smb302_values = {
5713 .version_string = SMB302_VERSION_STRING,
5714 .protocol_id = SMB302_PROT_ID,
5715 .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,
5716 .large_lock_type = 0,
5717 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
5718 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
5719 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
5720 .header_size = sizeof(struct smb2_sync_hdr),
5721 .header_preamble_size = 0,
5722 .max_header_size = MAX_SMB2_HDR_SIZE,
5723 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
5724 .lock_cmd = SMB2_LOCK,
5726 .cap_nt_find = SMB2_NT_FIND,
5727 .cap_large_files = SMB2_LARGE_FILES,
5728 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
5729 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
5730 .create_lease_size = sizeof(struct create_lease_v2),
5733 struct smb_version_values smb311_values = {
5734 .version_string = SMB311_VERSION_STRING,
5735 .protocol_id = SMB311_PROT_ID,
5736 .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,
5737 .large_lock_type = 0,
5738 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
5739 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
5740 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
5741 .header_size = sizeof(struct smb2_sync_hdr),
5742 .header_preamble_size = 0,
5743 .max_header_size = MAX_SMB2_HDR_SIZE,
5744 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
5745 .lock_cmd = SMB2_LOCK,
5747 .cap_nt_find = SMB2_NT_FIND,
5748 .cap_large_files = SMB2_LARGE_FILES,
5749 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
5750 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
5751 .create_lease_size = sizeof(struct create_lease_v2),