1 // SPDX-License-Identifier: GPL-2.0
3 * SMB2 version specific operations
5 * Copyright (c) 2012, Jeff Layton <jlayton@redhat.com>
8 #include <linux/pagemap.h>
10 #include <linux/falloc.h>
11 #include <linux/scatterlist.h>
12 #include <linux/uuid.h>
13 #include <linux/sort.h>
14 #include <crypto/aead.h>
15 #include <linux/fiemap.h>
16 #include <uapi/linux/magic.h>
20 #include "smb2proto.h"
21 #include "cifsproto.h"
22 #include "cifs_debug.h"
23 #include "cifs_unicode.h"
24 #include "smb2status.h"
26 #include "cifs_ioctl.h"
27 #include "smbdirect.h"
29 #include "fs_context.h"
30 #include "cached_dir.h"
32 /* Change credits for different ops and return the total number of credits */
34 change_conf(struct TCP_Server_Info *server)
36 server->credits += server->echo_credits + server->oplock_credits;
37 if (server->credits > server->max_credits)
38 server->credits = server->max_credits;
39 server->oplock_credits = server->echo_credits = 0;
40 switch (server->credits) {
44 server->echoes = false;
45 server->oplocks = false;
48 server->echoes = true;
49 server->oplocks = false;
50 server->echo_credits = 1;
53 server->echoes = true;
55 server->oplocks = true;
56 server->oplock_credits = 1;
58 server->oplocks = false;
60 server->echo_credits = 1;
62 server->credits -= server->echo_credits + server->oplock_credits;
63 return server->credits + server->echo_credits + server->oplock_credits;
67 smb2_add_credits(struct TCP_Server_Info *server,
68 const struct cifs_credits *credits, const int optype)
71 int scredits, in_flight;
72 unsigned int add = credits->value;
73 unsigned int instance = credits->instance;
74 bool reconnect_detected = false;
75 bool reconnect_with_invalid_credits = false;
77 spin_lock(&server->req_lock);
78 val = server->ops->get_credits_field(server, optype);
80 /* eg found case where write overlapping reconnect messed up credits */
81 if (((optype & CIFS_OP_MASK) == CIFS_NEG_OP) && (*val != 0))
82 reconnect_with_invalid_credits = true;
84 if ((instance == 0) || (instance == server->reconnect_instance))
87 reconnect_detected = true;
90 *val = 65000; /* Don't get near 64K credits, avoid srv bugs */
91 pr_warn_once("server overflowed SMB3 credits\n");
92 trace_smb3_overflow_credits(server->CurrentMid,
93 server->conn_id, server->hostname, *val,
94 add, server->in_flight);
96 WARN_ON_ONCE(server->in_flight == 0);
98 if (server->in_flight == 0 &&
99 ((optype & CIFS_OP_MASK) != CIFS_NEG_OP) &&
100 ((optype & CIFS_OP_MASK) != CIFS_SESS_OP))
101 rc = change_conf(server);
103 * Sometimes server returns 0 credits on oplock break ack - we need to
104 * rebalance credits in this case.
106 else if (server->in_flight > 0 && server->oplock_credits == 0 &&
108 if (server->credits > 1) {
110 server->oplock_credits++;
112 } else if ((server->in_flight > 0) && (server->oplock_credits > 3) &&
113 ((optype & CIFS_OP_MASK) == CIFS_OBREAK_OP))
114 /* if now have too many oplock credits, rebalance so don't starve normal ops */
118 in_flight = server->in_flight;
119 spin_unlock(&server->req_lock);
120 wake_up(&server->request_q);
122 if (reconnect_detected) {
123 trace_smb3_reconnect_detected(server->CurrentMid,
124 server->conn_id, server->hostname, scredits, add, in_flight);
126 cifs_dbg(FYI, "trying to put %d credits from the old server instance %d\n",
130 if (reconnect_with_invalid_credits) {
131 trace_smb3_reconnect_with_invalid_credits(server->CurrentMid,
132 server->conn_id, server->hostname, scredits, add, in_flight);
133 cifs_dbg(FYI, "Negotiate operation when server credits is non-zero. Optype: %d, server credits: %d, credits added: %d\n",
134 optype, scredits, add);
137 spin_lock(&server->srv_lock);
138 if (server->tcpStatus == CifsNeedReconnect
139 || server->tcpStatus == CifsExiting) {
140 spin_unlock(&server->srv_lock);
143 spin_unlock(&server->srv_lock);
147 /* change_conf hasn't been executed */
150 cifs_server_dbg(VFS, "Possible client or server bug - zero credits\n");
153 cifs_server_dbg(VFS, "disabling echoes and oplocks\n");
156 cifs_dbg(FYI, "disabling oplocks\n");
159 /* change_conf rebalanced credits for different types */
163 trace_smb3_add_credits(server->CurrentMid,
164 server->conn_id, server->hostname, scredits, add, in_flight);
165 cifs_dbg(FYI, "%s: added %u credits total=%d\n", __func__, add, scredits);
169 smb2_set_credits(struct TCP_Server_Info *server, const int val)
171 int scredits, in_flight;
173 spin_lock(&server->req_lock);
174 server->credits = val;
176 server->reconnect_instance++;
178 * ChannelSequence updated for all channels in primary channel so that consistent
179 * across SMB3 requests sent on any channel. See MS-SMB2 3.2.4.1 and 3.2.7.1
181 if (SERVER_IS_CHAN(server))
182 server->primary_server->channel_sequence_num++;
184 server->channel_sequence_num++;
186 scredits = server->credits;
187 in_flight = server->in_flight;
188 spin_unlock(&server->req_lock);
190 trace_smb3_set_credits(server->CurrentMid,
191 server->conn_id, server->hostname, scredits, val, in_flight);
192 cifs_dbg(FYI, "%s: set %u credits\n", __func__, val);
194 /* don't log while holding the lock */
196 cifs_dbg(FYI, "set credits to 1 due to smb2 reconnect\n");
200 smb2_get_credits_field(struct TCP_Server_Info *server, const int optype)
204 return &server->echo_credits;
206 return &server->oplock_credits;
208 return &server->credits;
213 smb2_get_credits(struct mid_q_entry *mid)
215 return mid->credits_received;
219 smb2_wait_mtu_credits(struct TCP_Server_Info *server, unsigned int size,
220 unsigned int *num, struct cifs_credits *credits)
223 unsigned int scredits, in_flight;
225 spin_lock(&server->req_lock);
227 spin_unlock(&server->req_lock);
229 spin_lock(&server->srv_lock);
230 if (server->tcpStatus == CifsExiting) {
231 spin_unlock(&server->srv_lock);
234 spin_unlock(&server->srv_lock);
236 spin_lock(&server->req_lock);
237 if (server->credits <= 0) {
238 spin_unlock(&server->req_lock);
239 cifs_num_waiters_inc(server);
240 rc = wait_event_killable(server->request_q,
241 has_credits(server, &server->credits, 1));
242 cifs_num_waiters_dec(server);
245 spin_lock(&server->req_lock);
247 scredits = server->credits;
248 /* can deadlock with reopen */
250 *num = SMB2_MAX_BUFFER_SIZE;
252 credits->instance = 0;
256 /* leave some credits for reopen and other ops */
258 *num = min_t(unsigned int, size,
259 scredits * SMB2_MAX_BUFFER_SIZE);
262 DIV_ROUND_UP(*num, SMB2_MAX_BUFFER_SIZE);
263 credits->instance = server->reconnect_instance;
264 server->credits -= credits->value;
266 if (server->in_flight > server->max_in_flight)
267 server->max_in_flight = server->in_flight;
271 scredits = server->credits;
272 in_flight = server->in_flight;
273 spin_unlock(&server->req_lock);
275 trace_smb3_wait_credits(server->CurrentMid,
276 server->conn_id, server->hostname, scredits, -(credits->value), in_flight);
277 cifs_dbg(FYI, "%s: removed %u credits total=%d\n",
278 __func__, credits->value, scredits);
284 smb2_adjust_credits(struct TCP_Server_Info *server,
285 struct cifs_credits *credits,
286 const unsigned int payload_size)
288 int new_val = DIV_ROUND_UP(payload_size, SMB2_MAX_BUFFER_SIZE);
289 int scredits, in_flight;
291 if (!credits->value || credits->value == new_val)
294 if (credits->value < new_val) {
295 trace_smb3_too_many_credits(server->CurrentMid,
296 server->conn_id, server->hostname, 0, credits->value - new_val, 0);
297 cifs_server_dbg(VFS, "request has less credits (%d) than required (%d)",
298 credits->value, new_val);
303 spin_lock(&server->req_lock);
305 if (server->reconnect_instance != credits->instance) {
306 scredits = server->credits;
307 in_flight = server->in_flight;
308 spin_unlock(&server->req_lock);
310 trace_smb3_reconnect_detected(server->CurrentMid,
311 server->conn_id, server->hostname, scredits,
312 credits->value - new_val, in_flight);
313 cifs_server_dbg(VFS, "trying to return %d credits to old session\n",
314 credits->value - new_val);
318 server->credits += credits->value - new_val;
319 scredits = server->credits;
320 in_flight = server->in_flight;
321 spin_unlock(&server->req_lock);
322 wake_up(&server->request_q);
324 trace_smb3_adj_credits(server->CurrentMid,
325 server->conn_id, server->hostname, scredits,
326 credits->value - new_val, in_flight);
327 cifs_dbg(FYI, "%s: adjust added %u credits total=%d\n",
328 __func__, credits->value - new_val, scredits);
330 credits->value = new_val;
336 smb2_get_next_mid(struct TCP_Server_Info *server)
339 /* for SMB2 we need the current value */
340 spin_lock(&server->mid_lock);
341 mid = server->CurrentMid++;
342 spin_unlock(&server->mid_lock);
347 smb2_revert_current_mid(struct TCP_Server_Info *server, const unsigned int val)
349 spin_lock(&server->mid_lock);
350 if (server->CurrentMid >= val)
351 server->CurrentMid -= val;
352 spin_unlock(&server->mid_lock);
355 static struct mid_q_entry *
356 __smb2_find_mid(struct TCP_Server_Info *server, char *buf, bool dequeue)
358 struct mid_q_entry *mid;
359 struct smb2_hdr *shdr = (struct smb2_hdr *)buf;
360 __u64 wire_mid = le64_to_cpu(shdr->MessageId);
362 if (shdr->ProtocolId == SMB2_TRANSFORM_PROTO_NUM) {
363 cifs_server_dbg(VFS, "Encrypted frame parsing not supported yet\n");
367 spin_lock(&server->mid_lock);
368 list_for_each_entry(mid, &server->pending_mid_q, qhead) {
369 if ((mid->mid == wire_mid) &&
370 (mid->mid_state == MID_REQUEST_SUBMITTED) &&
371 (mid->command == shdr->Command)) {
372 kref_get(&mid->refcount);
374 list_del_init(&mid->qhead);
375 mid->mid_flags |= MID_DELETED;
377 spin_unlock(&server->mid_lock);
381 spin_unlock(&server->mid_lock);
385 static struct mid_q_entry *
386 smb2_find_mid(struct TCP_Server_Info *server, char *buf)
388 return __smb2_find_mid(server, buf, false);
391 static struct mid_q_entry *
392 smb2_find_dequeue_mid(struct TCP_Server_Info *server, char *buf)
394 return __smb2_find_mid(server, buf, true);
398 smb2_dump_detail(void *buf, struct TCP_Server_Info *server)
400 #ifdef CONFIG_CIFS_DEBUG2
401 struct smb2_hdr *shdr = (struct smb2_hdr *)buf;
403 cifs_server_dbg(VFS, "Cmd: %d Err: 0x%x Flags: 0x%x Mid: %llu Pid: %d\n",
404 shdr->Command, shdr->Status, shdr->Flags, shdr->MessageId,
405 shdr->Id.SyncId.ProcessId);
406 cifs_server_dbg(VFS, "smb buf %p len %u\n", buf,
407 server->ops->calc_smb_size(buf));
412 smb2_need_neg(struct TCP_Server_Info *server)
414 return server->max_read == 0;
418 smb2_negotiate(const unsigned int xid,
419 struct cifs_ses *ses,
420 struct TCP_Server_Info *server)
424 spin_lock(&server->mid_lock);
425 server->CurrentMid = 0;
426 spin_unlock(&server->mid_lock);
427 rc = SMB2_negotiate(xid, ses, server);
428 /* BB we probably don't need to retry with modern servers */
435 smb2_negotiate_wsize(struct cifs_tcon *tcon, struct smb3_fs_context *ctx)
437 struct TCP_Server_Info *server = tcon->ses->server;
440 /* start with specified wsize, or default */
441 wsize = ctx->wsize ? ctx->wsize : CIFS_DEFAULT_IOSIZE;
442 wsize = min_t(unsigned int, wsize, server->max_write);
443 if (!(server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU))
444 wsize = min_t(unsigned int, wsize, SMB2_MAX_BUFFER_SIZE);
450 smb3_negotiate_wsize(struct cifs_tcon *tcon, struct smb3_fs_context *ctx)
452 struct TCP_Server_Info *server = tcon->ses->server;
455 /* start with specified wsize, or default */
456 wsize = ctx->wsize ? ctx->wsize : SMB3_DEFAULT_IOSIZE;
457 wsize = min_t(unsigned int, wsize, server->max_write);
458 #ifdef CONFIG_CIFS_SMB_DIRECT
462 * Account for SMB2 data transfer packet header and
463 * possible encryption header
465 wsize = min_t(unsigned int,
467 server->smbd_conn->max_fragmented_send_size -
468 SMB2_READWRITE_PDU_HEADER_SIZE -
469 sizeof(struct smb2_transform_hdr));
471 wsize = min_t(unsigned int,
472 wsize, server->smbd_conn->max_readwrite_size);
475 if (!(server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU))
476 wsize = min_t(unsigned int, wsize, SMB2_MAX_BUFFER_SIZE);
482 smb2_negotiate_rsize(struct cifs_tcon *tcon, struct smb3_fs_context *ctx)
484 struct TCP_Server_Info *server = tcon->ses->server;
487 /* start with specified rsize, or default */
488 rsize = ctx->rsize ? ctx->rsize : CIFS_DEFAULT_IOSIZE;
489 rsize = min_t(unsigned int, rsize, server->max_read);
491 if (!(server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU))
492 rsize = min_t(unsigned int, rsize, SMB2_MAX_BUFFER_SIZE);
498 smb3_negotiate_rsize(struct cifs_tcon *tcon, struct smb3_fs_context *ctx)
500 struct TCP_Server_Info *server = tcon->ses->server;
503 /* start with specified rsize, or default */
504 rsize = ctx->rsize ? ctx->rsize : SMB3_DEFAULT_IOSIZE;
505 rsize = min_t(unsigned int, rsize, server->max_read);
506 #ifdef CONFIG_CIFS_SMB_DIRECT
510 * Account for SMB2 data transfer packet header and
511 * possible encryption header
513 rsize = min_t(unsigned int,
515 server->smbd_conn->max_fragmented_recv_size -
516 SMB2_READWRITE_PDU_HEADER_SIZE -
517 sizeof(struct smb2_transform_hdr));
519 rsize = min_t(unsigned int,
520 rsize, server->smbd_conn->max_readwrite_size);
524 if (!(server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU))
525 rsize = min_t(unsigned int, rsize, SMB2_MAX_BUFFER_SIZE);
531 * compare two interfaces a and b
532 * return 0 if everything matches.
533 * return 1 if a is rdma capable, or rss capable, or has higher link speed
534 * return -1 otherwise.
537 iface_cmp(struct cifs_server_iface *a, struct cifs_server_iface *b)
542 if (a->rdma_capable == b->rdma_capable) {
543 if (a->rss_capable == b->rss_capable) {
544 if (a->speed == b->speed) {
545 cmp_ret = cifs_ipaddr_cmp((struct sockaddr *) &a->sockaddr,
546 (struct sockaddr *) &b->sockaddr);
549 else if (cmp_ret > 0)
553 } else if (a->speed > b->speed)
557 } else if (a->rss_capable > b->rss_capable)
561 } else if (a->rdma_capable > b->rdma_capable)
568 parse_server_interfaces(struct network_interface_info_ioctl_rsp *buf,
569 size_t buf_len, struct cifs_ses *ses, bool in_mount)
571 struct network_interface_info_ioctl_rsp *p;
572 struct sockaddr_in *addr4;
573 struct sockaddr_in6 *addr6;
574 struct iface_info_ipv4 *p4;
575 struct iface_info_ipv6 *p6;
576 struct cifs_server_iface *info = NULL, *iface = NULL, *niface = NULL;
577 struct cifs_server_iface tmp_iface;
583 bytes_left = buf_len;
586 spin_lock(&ses->iface_lock);
587 /* do not query too frequently, this time with lock held */
588 if (ses->iface_last_update &&
589 time_before(jiffies, ses->iface_last_update +
590 (SMB_INTERFACE_POLL_INTERVAL * HZ))) {
591 spin_unlock(&ses->iface_lock);
596 * Go through iface_list and do kref_put to remove
597 * any unused ifaces. ifaces in use will be removed
598 * when the last user calls a kref_put on it
600 list_for_each_entry_safe(iface, niface, &ses->iface_list,
602 iface->is_active = 0;
603 kref_put(&iface->refcount, release_iface);
606 spin_unlock(&ses->iface_lock);
609 * Samba server e.g. can return an empty interface list in some cases,
610 * which would only be a problem if we were requesting multichannel
612 if (bytes_left == 0) {
613 /* avoid spamming logs every 10 minutes, so log only in mount */
614 if ((ses->chan_max > 1) && in_mount)
616 "multichannel not available\n"
617 "Empty network interface list returned by server %s\n",
618 ses->server->hostname);
623 while (bytes_left >= sizeof(*p)) {
624 memset(&tmp_iface, 0, sizeof(tmp_iface));
625 tmp_iface.speed = le64_to_cpu(p->LinkSpeed);
626 tmp_iface.rdma_capable = le32_to_cpu(p->Capability & RDMA_CAPABLE) ? 1 : 0;
627 tmp_iface.rss_capable = le32_to_cpu(p->Capability & RSS_CAPABLE) ? 1 : 0;
631 * The kernel and wire socket structures have the same
632 * layout and use network byte order but make the
633 * conversion explicit in case either one changes.
636 addr4 = (struct sockaddr_in *)&tmp_iface.sockaddr;
637 p4 = (struct iface_info_ipv4 *)p->Buffer;
638 addr4->sin_family = AF_INET;
639 memcpy(&addr4->sin_addr, &p4->IPv4Address, 4);
641 /* [MS-SMB2] 2.2.32.5.1.1 Clients MUST ignore these */
642 addr4->sin_port = cpu_to_be16(CIFS_PORT);
644 cifs_dbg(FYI, "%s: ipv4 %pI4\n", __func__,
648 addr6 = (struct sockaddr_in6 *)&tmp_iface.sockaddr;
649 p6 = (struct iface_info_ipv6 *)p->Buffer;
650 addr6->sin6_family = AF_INET6;
651 memcpy(&addr6->sin6_addr, &p6->IPv6Address, 16);
653 /* [MS-SMB2] 2.2.32.5.1.2 Clients MUST ignore these */
654 addr6->sin6_flowinfo = 0;
655 addr6->sin6_scope_id = 0;
656 addr6->sin6_port = cpu_to_be16(CIFS_PORT);
658 cifs_dbg(FYI, "%s: ipv6 %pI6\n", __func__,
663 "%s: skipping unsupported socket family\n",
669 * The iface_list is assumed to be sorted by speed.
670 * Check if the new interface exists in that list.
671 * NEVER change iface. it could be in use.
672 * Add a new one instead
674 spin_lock(&ses->iface_lock);
675 list_for_each_entry_safe(iface, niface, &ses->iface_list,
677 ret = iface_cmp(iface, &tmp_iface);
679 /* just get a ref so that it doesn't get picked/freed */
680 iface->is_active = 1;
681 kref_get(&iface->refcount);
683 spin_unlock(&ses->iface_lock);
685 } else if (ret < 0) {
686 /* all remaining ifaces are slower */
687 kref_get(&iface->refcount);
691 spin_unlock(&ses->iface_lock);
693 /* no match. insert the entry in the list */
694 info = kmalloc(sizeof(struct cifs_server_iface),
700 memcpy(info, &tmp_iface, sizeof(tmp_iface));
702 /* add this new entry to the list */
703 kref_init(&info->refcount);
706 cifs_dbg(FYI, "%s: adding iface %zu\n", __func__, ses->iface_count);
707 cifs_dbg(FYI, "%s: speed %zu bps\n", __func__, info->speed);
708 cifs_dbg(FYI, "%s: capabilities 0x%08x\n", __func__,
709 le32_to_cpu(p->Capability));
711 spin_lock(&ses->iface_lock);
712 if (!list_entry_is_head(iface, &ses->iface_list, iface_head)) {
713 list_add_tail(&info->iface_head, &iface->iface_head);
714 kref_put(&iface->refcount, release_iface);
716 list_add_tail(&info->iface_head, &ses->iface_list);
719 spin_unlock(&ses->iface_lock);
720 ses->iface_last_update = jiffies;
723 next = le32_to_cpu(p->Next);
725 bytes_left -= sizeof(*p);
728 p = (struct network_interface_info_ioctl_rsp *)((u8 *)p+next);
733 cifs_dbg(VFS, "%s: malformed interface info\n", __func__);
738 /* Azure rounds the buffer size up 8, to a 16 byte boundary */
739 if ((bytes_left > 8) || p->Next)
740 cifs_dbg(VFS, "%s: incomplete interface info\n", __func__);
743 if (!ses->iface_count) {
753 SMB3_request_interfaces(const unsigned int xid, struct cifs_tcon *tcon, bool in_mount)
756 unsigned int ret_data_len = 0;
757 struct network_interface_info_ioctl_rsp *out_buf = NULL;
758 struct cifs_ses *ses = tcon->ses;
759 struct TCP_Server_Info *pserver;
761 /* do not query too frequently */
762 if (ses->iface_last_update &&
763 time_before(jiffies, ses->iface_last_update +
764 (SMB_INTERFACE_POLL_INTERVAL * HZ)))
767 rc = SMB2_ioctl(xid, tcon, NO_FILE_ID, NO_FILE_ID,
768 FSCTL_QUERY_NETWORK_INTERFACE_INFO,
769 NULL /* no data input */, 0 /* no data input */,
770 CIFSMaxBufSize, (char **)&out_buf, &ret_data_len);
771 if (rc == -EOPNOTSUPP) {
773 "server does not support query network interfaces\n");
775 } else if (rc != 0) {
776 cifs_tcon_dbg(VFS, "error %d on ioctl to get interface list\n", rc);
780 rc = parse_server_interfaces(out_buf, ret_data_len, ses, in_mount);
784 /* check if iface is still active */
785 pserver = ses->chans[0].server;
786 if (pserver && !cifs_chan_is_iface_active(ses, pserver))
787 cifs_chan_update_iface(ses, pserver);
795 smb3_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon,
796 struct cifs_sb_info *cifs_sb)
799 __le16 srch_path = 0; /* Null - open root of share */
800 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
801 struct cifs_open_parms oparms;
803 struct cached_fid *cfid = NULL;
805 oparms = (struct cifs_open_parms) {
808 .desired_access = FILE_READ_ATTRIBUTES,
809 .disposition = FILE_OPEN,
810 .create_options = cifs_create_options(cifs_sb, 0),
814 rc = open_cached_dir(xid, tcon, "", cifs_sb, false, &cfid);
816 memcpy(&fid, &cfid->fid, sizeof(struct cifs_fid));
818 rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL,
823 SMB3_request_interfaces(xid, tcon, true /* called during mount */);
825 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
826 FS_ATTRIBUTE_INFORMATION);
827 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
828 FS_DEVICE_INFORMATION);
829 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
830 FS_VOLUME_INFORMATION);
831 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
832 FS_SECTOR_SIZE_INFORMATION); /* SMB3 specific */
834 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
836 close_cached_dir(cfid);
840 smb2_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon,
841 struct cifs_sb_info *cifs_sb)
844 __le16 srch_path = 0; /* Null - open root of share */
845 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
846 struct cifs_open_parms oparms;
849 oparms = (struct cifs_open_parms) {
852 .desired_access = FILE_READ_ATTRIBUTES,
853 .disposition = FILE_OPEN,
854 .create_options = cifs_create_options(cifs_sb, 0),
858 rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL,
863 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
864 FS_ATTRIBUTE_INFORMATION);
865 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
866 FS_DEVICE_INFORMATION);
867 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
871 smb2_is_path_accessible(const unsigned int xid, struct cifs_tcon *tcon,
872 struct cifs_sb_info *cifs_sb, const char *full_path)
875 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
876 int err_buftype = CIFS_NO_BUFFER;
877 struct cifs_open_parms oparms;
878 struct kvec err_iov = {};
880 struct cached_fid *cfid;
884 rc = open_cached_dir(xid, tcon, full_path, cifs_sb, true, &cfid);
886 if (cfid->has_lease) {
887 close_cached_dir(cfid);
890 close_cached_dir(cfid);
893 utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb);
897 oparms = (struct cifs_open_parms) {
900 .desired_access = FILE_READ_ATTRIBUTES,
901 .disposition = FILE_OPEN,
902 .create_options = cifs_create_options(cifs_sb, 0),
906 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL,
907 &err_iov, &err_buftype);
909 struct smb2_hdr *hdr = err_iov.iov_base;
911 if (unlikely(!hdr || err_buftype == CIFS_NO_BUFFER))
914 if (rc != -EREMOTE && hdr->Status == STATUS_OBJECT_NAME_INVALID) {
915 rc2 = cifs_inval_name_dfs_link_error(xid, tcon, cifs_sb,
924 if (rc == -EREMOTE && IS_ENABLED(CONFIG_CIFS_DFS_UPCALL) && cifs_sb &&
925 (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_DFS))
930 rc = SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
933 free_rsp_buf(err_buftype, err_iov.iov_base);
938 static int smb2_get_srv_inum(const unsigned int xid, struct cifs_tcon *tcon,
939 struct cifs_sb_info *cifs_sb, const char *full_path,
940 u64 *uniqueid, struct cifs_open_info_data *data)
942 *uniqueid = le64_to_cpu(data->fi.IndexNumber);
946 static int smb2_query_file_info(const unsigned int xid, struct cifs_tcon *tcon,
947 struct cifsFileInfo *cfile, struct cifs_open_info_data *data)
949 struct cifs_fid *fid = &cfile->fid;
951 if (cfile->symlink_target) {
952 data->symlink_target = kstrdup(cfile->symlink_target, GFP_KERNEL);
953 if (!data->symlink_target)
956 return SMB2_query_info(xid, tcon, fid->persistent_fid, fid->volatile_fid, &data->fi);
959 #ifdef CONFIG_CIFS_XATTR
961 move_smb2_ea_to_cifs(char *dst, size_t dst_size,
962 struct smb2_file_full_ea_info *src, size_t src_size,
963 const unsigned char *ea_name)
966 unsigned int ea_name_len = ea_name ? strlen(ea_name) : 0;
968 size_t buf_size = dst_size;
969 size_t name_len, value_len, user_name_len;
971 while (src_size > 0) {
972 name_len = (size_t)src->ea_name_length;
973 value_len = (size_t)le16_to_cpu(src->ea_value_length);
978 if (src_size < 8 + name_len + 1 + value_len) {
979 cifs_dbg(FYI, "EA entry goes beyond length of list\n");
984 name = &src->ea_data[0];
985 value = &src->ea_data[src->ea_name_length + 1];
988 if (ea_name_len == name_len &&
989 memcmp(ea_name, name, name_len) == 0) {
993 if (dst_size < value_len) {
997 memcpy(dst, value, value_len);
1001 /* 'user.' plus a terminating null */
1002 user_name_len = 5 + 1 + name_len;
1004 if (buf_size == 0) {
1005 /* skip copy - calc size only */
1006 rc += user_name_len;
1007 } else if (dst_size >= user_name_len) {
1008 dst_size -= user_name_len;
1009 memcpy(dst, "user.", 5);
1011 memcpy(dst, src->ea_data, name_len);
1015 rc += user_name_len;
1017 /* stop before overrun buffer */
1023 if (!src->next_entry_offset)
1026 if (src_size < le32_to_cpu(src->next_entry_offset)) {
1027 /* stop before overrun buffer */
1031 src_size -= le32_to_cpu(src->next_entry_offset);
1032 src = (void *)((char *)src +
1033 le32_to_cpu(src->next_entry_offset));
1036 /* didn't find the named attribute */
1045 smb2_query_eas(const unsigned int xid, struct cifs_tcon *tcon,
1046 const unsigned char *path, const unsigned char *ea_name,
1047 char *ea_data, size_t buf_size,
1048 struct cifs_sb_info *cifs_sb)
1051 struct kvec rsp_iov = {NULL, 0};
1052 int buftype = CIFS_NO_BUFFER;
1053 struct smb2_query_info_rsp *rsp;
1054 struct smb2_file_full_ea_info *info = NULL;
1056 rc = smb2_query_info_compound(xid, tcon, path,
1058 FILE_FULL_EA_INFORMATION,
1061 MAX_SMB2_CREATE_RESPONSE_SIZE -
1062 MAX_SMB2_CLOSE_RESPONSE_SIZE,
1063 &rsp_iov, &buftype, cifs_sb);
1066 * If ea_name is NULL (listxattr) and there are no EAs,
1067 * return 0 as it's not an error. Otherwise, the specified
1068 * ea_name was not found.
1070 if (!ea_name && rc == -ENODATA)
1075 rsp = (struct smb2_query_info_rsp *)rsp_iov.iov_base;
1076 rc = smb2_validate_iov(le16_to_cpu(rsp->OutputBufferOffset),
1077 le32_to_cpu(rsp->OutputBufferLength),
1079 sizeof(struct smb2_file_full_ea_info));
1083 info = (struct smb2_file_full_ea_info *)(
1084 le16_to_cpu(rsp->OutputBufferOffset) + (char *)rsp);
1085 rc = move_smb2_ea_to_cifs(ea_data, buf_size, info,
1086 le32_to_cpu(rsp->OutputBufferLength), ea_name);
1089 free_rsp_buf(buftype, rsp_iov.iov_base);
1094 smb2_set_ea(const unsigned int xid, struct cifs_tcon *tcon,
1095 const char *path, const char *ea_name, const void *ea_value,
1096 const __u16 ea_value_len, const struct nls_table *nls_codepage,
1097 struct cifs_sb_info *cifs_sb)
1099 struct smb2_compound_vars *vars;
1100 struct cifs_ses *ses = tcon->ses;
1101 struct TCP_Server_Info *server = cifs_pick_channel(ses);
1102 struct smb_rqst *rqst;
1103 struct kvec *rsp_iov;
1104 __le16 *utf16_path = NULL;
1105 int ea_name_len = strlen(ea_name);
1106 int flags = CIFS_CP_CREATE_CLOSE_OP;
1108 int resp_buftype[3];
1109 struct cifs_open_parms oparms;
1110 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
1111 struct cifs_fid fid;
1112 unsigned int size[1];
1114 struct smb2_file_full_ea_info *ea = NULL;
1115 struct smb2_query_info_rsp *rsp;
1116 int rc, used_len = 0;
1118 if (smb3_encryption_required(tcon))
1119 flags |= CIFS_TRANSFORM_REQ;
1121 if (ea_name_len > 255)
1124 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
1128 resp_buftype[0] = resp_buftype[1] = resp_buftype[2] = CIFS_NO_BUFFER;
1129 vars = kzalloc(sizeof(*vars), GFP_KERNEL);
1135 rsp_iov = vars->rsp_iov;
1137 if (ses->server->ops->query_all_EAs) {
1139 rc = ses->server->ops->query_all_EAs(xid, tcon, path,
1145 /* If we are adding a attribute we should first check
1146 * if there will be enough space available to store
1147 * the new EA. If not we should not add it since we
1148 * would not be able to even read the EAs back.
1150 rc = smb2_query_info_compound(xid, tcon, path,
1152 FILE_FULL_EA_INFORMATION,
1155 MAX_SMB2_CREATE_RESPONSE_SIZE -
1156 MAX_SMB2_CLOSE_RESPONSE_SIZE,
1157 &rsp_iov[1], &resp_buftype[1], cifs_sb);
1159 rsp = (struct smb2_query_info_rsp *)rsp_iov[1].iov_base;
1160 used_len = le32_to_cpu(rsp->OutputBufferLength);
1162 free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base);
1163 resp_buftype[1] = CIFS_NO_BUFFER;
1164 memset(&rsp_iov[1], 0, sizeof(rsp_iov[1]));
1167 /* Use a fudge factor of 256 bytes in case we collide
1168 * with a different set_EAs command.
1170 if (CIFSMaxBufSize - MAX_SMB2_CREATE_RESPONSE_SIZE -
1171 MAX_SMB2_CLOSE_RESPONSE_SIZE - 256 <
1172 used_len + ea_name_len + ea_value_len + 1) {
1180 rqst[0].rq_iov = vars->open_iov;
1181 rqst[0].rq_nvec = SMB2_CREATE_IOV_SIZE;
1183 oparms = (struct cifs_open_parms) {
1186 .desired_access = FILE_WRITE_EA,
1187 .disposition = FILE_OPEN,
1188 .create_options = cifs_create_options(cifs_sb, 0),
1192 rc = SMB2_open_init(tcon, server,
1193 &rqst[0], &oplock, &oparms, utf16_path);
1196 smb2_set_next_command(tcon, &rqst[0]);
1200 rqst[1].rq_iov = vars->si_iov;
1201 rqst[1].rq_nvec = 1;
1203 len = sizeof(*ea) + ea_name_len + ea_value_len + 1;
1204 ea = kzalloc(len, GFP_KERNEL);
1210 ea->ea_name_length = ea_name_len;
1211 ea->ea_value_length = cpu_to_le16(ea_value_len);
1212 memcpy(ea->ea_data, ea_name, ea_name_len + 1);
1213 memcpy(ea->ea_data + ea_name_len + 1, ea_value, ea_value_len);
1218 rc = SMB2_set_info_init(tcon, server,
1219 &rqst[1], COMPOUND_FID,
1220 COMPOUND_FID, current->tgid,
1221 FILE_FULL_EA_INFORMATION,
1222 SMB2_O_INFO_FILE, 0, data, size);
1225 smb2_set_next_command(tcon, &rqst[1]);
1226 smb2_set_related(&rqst[1]);
1229 rqst[2].rq_iov = &vars->close_iov;
1230 rqst[2].rq_nvec = 1;
1231 rc = SMB2_close_init(tcon, server,
1232 &rqst[2], COMPOUND_FID, COMPOUND_FID, false);
1235 smb2_set_related(&rqst[2]);
1237 rc = compound_send_recv(xid, ses, server,
1239 resp_buftype, rsp_iov);
1240 /* no need to bump num_remote_opens because handle immediately closed */
1244 SMB2_open_free(&rqst[0]);
1245 SMB2_set_info_free(&rqst[1]);
1246 SMB2_close_free(&rqst[2]);
1247 free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base);
1248 free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base);
1249 free_rsp_buf(resp_buftype[2], rsp_iov[2].iov_base);
1258 smb2_can_echo(struct TCP_Server_Info *server)
1260 return server->echoes;
1264 smb2_clear_stats(struct cifs_tcon *tcon)
1268 for (i = 0; i < NUMBER_OF_SMB2_COMMANDS; i++) {
1269 atomic_set(&tcon->stats.smb2_stats.smb2_com_sent[i], 0);
1270 atomic_set(&tcon->stats.smb2_stats.smb2_com_failed[i], 0);
1275 smb2_dump_share_caps(struct seq_file *m, struct cifs_tcon *tcon)
1277 seq_puts(m, "\n\tShare Capabilities:");
1278 if (tcon->capabilities & SMB2_SHARE_CAP_DFS)
1279 seq_puts(m, " DFS,");
1280 if (tcon->capabilities & SMB2_SHARE_CAP_CONTINUOUS_AVAILABILITY)
1281 seq_puts(m, " CONTINUOUS AVAILABILITY,");
1282 if (tcon->capabilities & SMB2_SHARE_CAP_SCALEOUT)
1283 seq_puts(m, " SCALEOUT,");
1284 if (tcon->capabilities & SMB2_SHARE_CAP_CLUSTER)
1285 seq_puts(m, " CLUSTER,");
1286 if (tcon->capabilities & SMB2_SHARE_CAP_ASYMMETRIC)
1287 seq_puts(m, " ASYMMETRIC,");
1288 if (tcon->capabilities == 0)
1289 seq_puts(m, " None");
1290 if (tcon->ss_flags & SSINFO_FLAGS_ALIGNED_DEVICE)
1291 seq_puts(m, " Aligned,");
1292 if (tcon->ss_flags & SSINFO_FLAGS_PARTITION_ALIGNED_ON_DEVICE)
1293 seq_puts(m, " Partition Aligned,");
1294 if (tcon->ss_flags & SSINFO_FLAGS_NO_SEEK_PENALTY)
1295 seq_puts(m, " SSD,");
1296 if (tcon->ss_flags & SSINFO_FLAGS_TRIM_ENABLED)
1297 seq_puts(m, " TRIM-support,");
1299 seq_printf(m, "\tShare Flags: 0x%x", tcon->share_flags);
1300 seq_printf(m, "\n\ttid: 0x%x", tcon->tid);
1301 if (tcon->perf_sector_size)
1302 seq_printf(m, "\tOptimal sector size: 0x%x",
1303 tcon->perf_sector_size);
1304 seq_printf(m, "\tMaximal Access: 0x%x", tcon->maximal_access);
1308 smb2_print_stats(struct seq_file *m, struct cifs_tcon *tcon)
1310 atomic_t *sent = tcon->stats.smb2_stats.smb2_com_sent;
1311 atomic_t *failed = tcon->stats.smb2_stats.smb2_com_failed;
1314 * Can't display SMB2_NEGOTIATE, SESSION_SETUP, LOGOFF, CANCEL and ECHO
1315 * totals (requests sent) since those SMBs are per-session not per tcon
1317 seq_printf(m, "\nBytes read: %llu Bytes written: %llu",
1318 (long long)(tcon->bytes_read),
1319 (long long)(tcon->bytes_written));
1320 seq_printf(m, "\nOpen files: %d total (local), %d open on server",
1321 atomic_read(&tcon->num_local_opens),
1322 atomic_read(&tcon->num_remote_opens));
1323 seq_printf(m, "\nTreeConnects: %d total %d failed",
1324 atomic_read(&sent[SMB2_TREE_CONNECT_HE]),
1325 atomic_read(&failed[SMB2_TREE_CONNECT_HE]));
1326 seq_printf(m, "\nTreeDisconnects: %d total %d failed",
1327 atomic_read(&sent[SMB2_TREE_DISCONNECT_HE]),
1328 atomic_read(&failed[SMB2_TREE_DISCONNECT_HE]));
1329 seq_printf(m, "\nCreates: %d total %d failed",
1330 atomic_read(&sent[SMB2_CREATE_HE]),
1331 atomic_read(&failed[SMB2_CREATE_HE]));
1332 seq_printf(m, "\nCloses: %d total %d failed",
1333 atomic_read(&sent[SMB2_CLOSE_HE]),
1334 atomic_read(&failed[SMB2_CLOSE_HE]));
1335 seq_printf(m, "\nFlushes: %d total %d failed",
1336 atomic_read(&sent[SMB2_FLUSH_HE]),
1337 atomic_read(&failed[SMB2_FLUSH_HE]));
1338 seq_printf(m, "\nReads: %d total %d failed",
1339 atomic_read(&sent[SMB2_READ_HE]),
1340 atomic_read(&failed[SMB2_READ_HE]));
1341 seq_printf(m, "\nWrites: %d total %d failed",
1342 atomic_read(&sent[SMB2_WRITE_HE]),
1343 atomic_read(&failed[SMB2_WRITE_HE]));
1344 seq_printf(m, "\nLocks: %d total %d failed",
1345 atomic_read(&sent[SMB2_LOCK_HE]),
1346 atomic_read(&failed[SMB2_LOCK_HE]));
1347 seq_printf(m, "\nIOCTLs: %d total %d failed",
1348 atomic_read(&sent[SMB2_IOCTL_HE]),
1349 atomic_read(&failed[SMB2_IOCTL_HE]));
1350 seq_printf(m, "\nQueryDirectories: %d total %d failed",
1351 atomic_read(&sent[SMB2_QUERY_DIRECTORY_HE]),
1352 atomic_read(&failed[SMB2_QUERY_DIRECTORY_HE]));
1353 seq_printf(m, "\nChangeNotifies: %d total %d failed",
1354 atomic_read(&sent[SMB2_CHANGE_NOTIFY_HE]),
1355 atomic_read(&failed[SMB2_CHANGE_NOTIFY_HE]));
1356 seq_printf(m, "\nQueryInfos: %d total %d failed",
1357 atomic_read(&sent[SMB2_QUERY_INFO_HE]),
1358 atomic_read(&failed[SMB2_QUERY_INFO_HE]));
1359 seq_printf(m, "\nSetInfos: %d total %d failed",
1360 atomic_read(&sent[SMB2_SET_INFO_HE]),
1361 atomic_read(&failed[SMB2_SET_INFO_HE]));
1362 seq_printf(m, "\nOplockBreaks: %d sent %d failed",
1363 atomic_read(&sent[SMB2_OPLOCK_BREAK_HE]),
1364 atomic_read(&failed[SMB2_OPLOCK_BREAK_HE]));
1368 smb2_set_fid(struct cifsFileInfo *cfile, struct cifs_fid *fid, __u32 oplock)
1370 struct cifsInodeInfo *cinode = CIFS_I(d_inode(cfile->dentry));
1371 struct TCP_Server_Info *server = tlink_tcon(cfile->tlink)->ses->server;
1373 cfile->fid.persistent_fid = fid->persistent_fid;
1374 cfile->fid.volatile_fid = fid->volatile_fid;
1375 cfile->fid.access = fid->access;
1376 #ifdef CONFIG_CIFS_DEBUG2
1377 cfile->fid.mid = fid->mid;
1378 #endif /* CIFS_DEBUG2 */
1379 server->ops->set_oplock_level(cinode, oplock, fid->epoch,
1381 cinode->can_cache_brlcks = CIFS_CACHE_WRITE(cinode);
1382 memcpy(cfile->fid.create_guid, fid->create_guid, 16);
1386 smb2_close_file(const unsigned int xid, struct cifs_tcon *tcon,
1387 struct cifs_fid *fid)
1389 SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
1393 smb2_close_getattr(const unsigned int xid, struct cifs_tcon *tcon,
1394 struct cifsFileInfo *cfile)
1396 struct smb2_file_network_open_info file_inf;
1397 struct inode *inode;
1400 rc = __SMB2_close(xid, tcon, cfile->fid.persistent_fid,
1401 cfile->fid.volatile_fid, &file_inf);
1405 inode = d_inode(cfile->dentry);
1407 spin_lock(&inode->i_lock);
1408 CIFS_I(inode)->time = jiffies;
1410 /* Creation time should not need to be updated on close */
1411 if (file_inf.LastWriteTime)
1412 inode_set_mtime_to_ts(inode,
1413 cifs_NTtimeToUnix(file_inf.LastWriteTime));
1414 if (file_inf.ChangeTime)
1415 inode_set_ctime_to_ts(inode,
1416 cifs_NTtimeToUnix(file_inf.ChangeTime));
1417 if (file_inf.LastAccessTime)
1418 inode_set_atime_to_ts(inode,
1419 cifs_NTtimeToUnix(file_inf.LastAccessTime));
1422 * i_blocks is not related to (i_size / i_blksize),
1423 * but instead 512 byte (2**9) size is required for
1424 * calculating num blocks.
1426 if (le64_to_cpu(file_inf.AllocationSize) > 4096)
1428 (512 - 1 + le64_to_cpu(file_inf.AllocationSize)) >> 9;
1430 /* End of file and Attributes should not have to be updated on close */
1431 spin_unlock(&inode->i_lock);
1435 SMB2_request_res_key(const unsigned int xid, struct cifs_tcon *tcon,
1436 u64 persistent_fid, u64 volatile_fid,
1437 struct copychunk_ioctl *pcchunk)
1440 unsigned int ret_data_len;
1441 struct resume_key_req *res_key;
1443 rc = SMB2_ioctl(xid, tcon, persistent_fid, volatile_fid,
1444 FSCTL_SRV_REQUEST_RESUME_KEY, NULL, 0 /* no input */,
1445 CIFSMaxBufSize, (char **)&res_key, &ret_data_len);
1447 if (rc == -EOPNOTSUPP) {
1448 pr_warn_once("Server share %s does not support copy range\n", tcon->tree_name);
1449 goto req_res_key_exit;
1451 cifs_tcon_dbg(VFS, "refcpy ioctl error %d getting resume key\n", rc);
1452 goto req_res_key_exit;
1454 if (ret_data_len < sizeof(struct resume_key_req)) {
1455 cifs_tcon_dbg(VFS, "Invalid refcopy resume key length\n");
1457 goto req_res_key_exit;
1459 memcpy(pcchunk->SourceKey, res_key->ResumeKey, COPY_CHUNK_RES_KEY_SIZE);
1467 smb2_ioctl_query_info(const unsigned int xid,
1468 struct cifs_tcon *tcon,
1469 struct cifs_sb_info *cifs_sb,
1470 __le16 *path, int is_dir,
1473 struct smb2_compound_vars *vars;
1474 struct smb_rqst *rqst;
1475 struct kvec *rsp_iov;
1476 struct cifs_ses *ses = tcon->ses;
1477 struct TCP_Server_Info *server = cifs_pick_channel(ses);
1478 char __user *arg = (char __user *)p;
1479 struct smb_query_info qi;
1480 struct smb_query_info __user *pqi;
1482 int flags = CIFS_CP_CREATE_CLOSE_OP;
1483 struct smb2_query_info_rsp *qi_rsp = NULL;
1484 struct smb2_ioctl_rsp *io_rsp = NULL;
1485 void *buffer = NULL;
1486 int resp_buftype[3];
1487 struct cifs_open_parms oparms;
1488 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
1489 struct cifs_fid fid;
1490 unsigned int size[2];
1492 int create_options = is_dir ? CREATE_NOT_FILE : CREATE_NOT_DIR;
1493 void (*free_req1_func)(struct smb_rqst *r);
1495 vars = kzalloc(sizeof(*vars), GFP_ATOMIC);
1498 rqst = &vars->rqst[0];
1499 rsp_iov = &vars->rsp_iov[0];
1501 resp_buftype[0] = resp_buftype[1] = resp_buftype[2] = CIFS_NO_BUFFER;
1503 if (copy_from_user(&qi, arg, sizeof(struct smb_query_info))) {
1507 if (qi.output_buffer_length > 1024) {
1512 if (!ses || !server) {
1517 if (smb3_encryption_required(tcon))
1518 flags |= CIFS_TRANSFORM_REQ;
1520 if (qi.output_buffer_length) {
1521 buffer = memdup_user(arg + sizeof(struct smb_query_info), qi.output_buffer_length);
1522 if (IS_ERR(buffer)) {
1523 rc = PTR_ERR(buffer);
1529 rqst[0].rq_iov = &vars->open_iov[0];
1530 rqst[0].rq_nvec = SMB2_CREATE_IOV_SIZE;
1532 oparms = (struct cifs_open_parms) {
1534 .disposition = FILE_OPEN,
1535 .create_options = cifs_create_options(cifs_sb, create_options),
1539 if (qi.flags & PASSTHRU_FSCTL) {
1540 switch (qi.info_type & FSCTL_DEVICE_ACCESS_MASK) {
1541 case FSCTL_DEVICE_ACCESS_FILE_READ_WRITE_ACCESS:
1542 oparms.desired_access = FILE_READ_DATA | FILE_WRITE_DATA | FILE_READ_ATTRIBUTES | SYNCHRONIZE;
1544 case FSCTL_DEVICE_ACCESS_FILE_ANY_ACCESS:
1545 oparms.desired_access = GENERIC_ALL;
1547 case FSCTL_DEVICE_ACCESS_FILE_READ_ACCESS:
1548 oparms.desired_access = GENERIC_READ;
1550 case FSCTL_DEVICE_ACCESS_FILE_WRITE_ACCESS:
1551 oparms.desired_access = GENERIC_WRITE;
1554 } else if (qi.flags & PASSTHRU_SET_INFO) {
1555 oparms.desired_access = GENERIC_WRITE;
1557 oparms.desired_access = FILE_READ_ATTRIBUTES | READ_CONTROL;
1560 rc = SMB2_open_init(tcon, server,
1561 &rqst[0], &oplock, &oparms, path);
1563 goto free_output_buffer;
1564 smb2_set_next_command(tcon, &rqst[0]);
1567 if (qi.flags & PASSTHRU_FSCTL) {
1568 /* Can eventually relax perm check since server enforces too */
1569 if (!capable(CAP_SYS_ADMIN)) {
1573 rqst[1].rq_iov = &vars->io_iov[0];
1574 rqst[1].rq_nvec = SMB2_IOCTL_IOV_SIZE;
1576 rc = SMB2_ioctl_init(tcon, server, &rqst[1], COMPOUND_FID, COMPOUND_FID,
1577 qi.info_type, buffer, qi.output_buffer_length,
1578 CIFSMaxBufSize - MAX_SMB2_CREATE_RESPONSE_SIZE -
1579 MAX_SMB2_CLOSE_RESPONSE_SIZE);
1580 free_req1_func = SMB2_ioctl_free;
1581 } else if (qi.flags == PASSTHRU_SET_INFO) {
1582 /* Can eventually relax perm check since server enforces too */
1583 if (!capable(CAP_SYS_ADMIN)) {
1587 if (qi.output_buffer_length < 8) {
1591 rqst[1].rq_iov = vars->si_iov;
1592 rqst[1].rq_nvec = 1;
1594 /* MS-FSCC 2.4.13 FileEndOfFileInformation */
1598 rc = SMB2_set_info_init(tcon, server, &rqst[1], COMPOUND_FID, COMPOUND_FID,
1599 current->tgid, FILE_END_OF_FILE_INFORMATION,
1600 SMB2_O_INFO_FILE, 0, data, size);
1601 free_req1_func = SMB2_set_info_free;
1602 } else if (qi.flags == PASSTHRU_QUERY_INFO) {
1603 rqst[1].rq_iov = &vars->qi_iov;
1604 rqst[1].rq_nvec = 1;
1606 rc = SMB2_query_info_init(tcon, server,
1607 &rqst[1], COMPOUND_FID,
1608 COMPOUND_FID, qi.file_info_class,
1609 qi.info_type, qi.additional_information,
1610 qi.input_buffer_length,
1611 qi.output_buffer_length, buffer);
1612 free_req1_func = SMB2_query_info_free;
1613 } else { /* unknown flags */
1614 cifs_tcon_dbg(VFS, "Invalid passthru query flags: 0x%x\n",
1621 smb2_set_next_command(tcon, &rqst[1]);
1622 smb2_set_related(&rqst[1]);
1625 rqst[2].rq_iov = &vars->close_iov;
1626 rqst[2].rq_nvec = 1;
1628 rc = SMB2_close_init(tcon, server,
1629 &rqst[2], COMPOUND_FID, COMPOUND_FID, false);
1632 smb2_set_related(&rqst[2]);
1634 rc = compound_send_recv(xid, ses, server,
1636 resp_buftype, rsp_iov);
1640 /* No need to bump num_remote_opens since handle immediately closed */
1641 if (qi.flags & PASSTHRU_FSCTL) {
1642 pqi = (struct smb_query_info __user *)arg;
1643 io_rsp = (struct smb2_ioctl_rsp *)rsp_iov[1].iov_base;
1644 if (le32_to_cpu(io_rsp->OutputCount) < qi.input_buffer_length)
1645 qi.input_buffer_length = le32_to_cpu(io_rsp->OutputCount);
1646 if (qi.input_buffer_length > 0 &&
1647 le32_to_cpu(io_rsp->OutputOffset) + qi.input_buffer_length
1648 > rsp_iov[1].iov_len) {
1653 if (copy_to_user(&pqi->input_buffer_length,
1654 &qi.input_buffer_length,
1655 sizeof(qi.input_buffer_length))) {
1660 if (copy_to_user((void __user *)pqi + sizeof(struct smb_query_info),
1661 (const void *)io_rsp + le32_to_cpu(io_rsp->OutputOffset),
1662 qi.input_buffer_length))
1665 pqi = (struct smb_query_info __user *)arg;
1666 qi_rsp = (struct smb2_query_info_rsp *)rsp_iov[1].iov_base;
1667 if (le32_to_cpu(qi_rsp->OutputBufferLength) < qi.input_buffer_length)
1668 qi.input_buffer_length = le32_to_cpu(qi_rsp->OutputBufferLength);
1669 if (copy_to_user(&pqi->input_buffer_length,
1670 &qi.input_buffer_length,
1671 sizeof(qi.input_buffer_length))) {
1676 if (copy_to_user(pqi + 1, qi_rsp->Buffer,
1677 qi.input_buffer_length))
1682 free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base);
1683 free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base);
1684 free_rsp_buf(resp_buftype[2], rsp_iov[2].iov_base);
1685 SMB2_close_free(&rqst[2]);
1687 free_req1_func(&rqst[1]);
1689 SMB2_open_free(&rqst[0]);
1698 smb2_copychunk_range(const unsigned int xid,
1699 struct cifsFileInfo *srcfile,
1700 struct cifsFileInfo *trgtfile, u64 src_off,
1701 u64 len, u64 dest_off)
1704 unsigned int ret_data_len;
1705 struct copychunk_ioctl *pcchunk;
1706 struct copychunk_ioctl_rsp *retbuf = NULL;
1707 struct cifs_tcon *tcon;
1708 int chunks_copied = 0;
1709 bool chunk_sizes_updated = false;
1710 ssize_t bytes_written, total_bytes_written = 0;
1712 pcchunk = kmalloc(sizeof(struct copychunk_ioctl), GFP_KERNEL);
1713 if (pcchunk == NULL)
1716 cifs_dbg(FYI, "%s: about to call request res key\n", __func__);
1717 /* Request a key from the server to identify the source of the copy */
1718 rc = SMB2_request_res_key(xid, tlink_tcon(srcfile->tlink),
1719 srcfile->fid.persistent_fid,
1720 srcfile->fid.volatile_fid, pcchunk);
1722 /* Note: request_res_key sets res_key null only if rc !=0 */
1726 /* For now array only one chunk long, will make more flexible later */
1727 pcchunk->ChunkCount = cpu_to_le32(1);
1728 pcchunk->Reserved = 0;
1729 pcchunk->Reserved2 = 0;
1731 tcon = tlink_tcon(trgtfile->tlink);
1734 pcchunk->SourceOffset = cpu_to_le64(src_off);
1735 pcchunk->TargetOffset = cpu_to_le64(dest_off);
1737 cpu_to_le32(min_t(u64, len, tcon->max_bytes_chunk));
1739 /* Request server copy to target from src identified by key */
1742 rc = SMB2_ioctl(xid, tcon, trgtfile->fid.persistent_fid,
1743 trgtfile->fid.volatile_fid, FSCTL_SRV_COPYCHUNK_WRITE,
1744 (char *)pcchunk, sizeof(struct copychunk_ioctl),
1745 CIFSMaxBufSize, (char **)&retbuf, &ret_data_len);
1748 sizeof(struct copychunk_ioctl_rsp)) {
1749 cifs_tcon_dbg(VFS, "Invalid cchunk response size\n");
1753 if (retbuf->TotalBytesWritten == 0) {
1754 cifs_dbg(FYI, "no bytes copied\n");
1759 * Check if server claimed to write more than we asked
1761 if (le32_to_cpu(retbuf->TotalBytesWritten) >
1762 le32_to_cpu(pcchunk->Length)) {
1763 cifs_tcon_dbg(VFS, "Invalid copy chunk response\n");
1767 if (le32_to_cpu(retbuf->ChunksWritten) != 1) {
1768 cifs_tcon_dbg(VFS, "Invalid num chunks written\n");
1774 bytes_written = le32_to_cpu(retbuf->TotalBytesWritten);
1775 src_off += bytes_written;
1776 dest_off += bytes_written;
1777 len -= bytes_written;
1778 total_bytes_written += bytes_written;
1780 cifs_dbg(FYI, "Chunks %d PartialChunk %d Total %zu\n",
1781 le32_to_cpu(retbuf->ChunksWritten),
1782 le32_to_cpu(retbuf->ChunkBytesWritten),
1784 } else if (rc == -EINVAL) {
1785 if (ret_data_len != sizeof(struct copychunk_ioctl_rsp))
1788 cifs_dbg(FYI, "MaxChunks %d BytesChunk %d MaxCopy %d\n",
1789 le32_to_cpu(retbuf->ChunksWritten),
1790 le32_to_cpu(retbuf->ChunkBytesWritten),
1791 le32_to_cpu(retbuf->TotalBytesWritten));
1794 * Check if this is the first request using these sizes,
1795 * (ie check if copy succeed once with original sizes
1796 * and check if the server gave us different sizes after
1797 * we already updated max sizes on previous request).
1798 * if not then why is the server returning an error now
1800 if ((chunks_copied != 0) || chunk_sizes_updated)
1803 /* Check that server is not asking us to grow size */
1804 if (le32_to_cpu(retbuf->ChunkBytesWritten) <
1805 tcon->max_bytes_chunk)
1806 tcon->max_bytes_chunk =
1807 le32_to_cpu(retbuf->ChunkBytesWritten);
1809 goto cchunk_out; /* server gave us bogus size */
1811 /* No need to change MaxChunks since already set to 1 */
1812 chunk_sizes_updated = true;
1823 return total_bytes_written;
1827 smb2_flush_file(const unsigned int xid, struct cifs_tcon *tcon,
1828 struct cifs_fid *fid)
1830 return SMB2_flush(xid, tcon, fid->persistent_fid, fid->volatile_fid);
1834 smb2_read_data_offset(char *buf)
1836 struct smb2_read_rsp *rsp = (struct smb2_read_rsp *)buf;
1838 return rsp->DataOffset;
1842 smb2_read_data_length(char *buf, bool in_remaining)
1844 struct smb2_read_rsp *rsp = (struct smb2_read_rsp *)buf;
1847 return le32_to_cpu(rsp->DataRemaining);
1849 return le32_to_cpu(rsp->DataLength);
1854 smb2_sync_read(const unsigned int xid, struct cifs_fid *pfid,
1855 struct cifs_io_parms *parms, unsigned int *bytes_read,
1856 char **buf, int *buf_type)
1858 parms->persistent_fid = pfid->persistent_fid;
1859 parms->volatile_fid = pfid->volatile_fid;
1860 return SMB2_read(xid, parms, bytes_read, buf, buf_type);
1864 smb2_sync_write(const unsigned int xid, struct cifs_fid *pfid,
1865 struct cifs_io_parms *parms, unsigned int *written,
1866 struct kvec *iov, unsigned long nr_segs)
1869 parms->persistent_fid = pfid->persistent_fid;
1870 parms->volatile_fid = pfid->volatile_fid;
1871 return SMB2_write(xid, parms, written, iov, nr_segs);
1874 /* Set or clear the SPARSE_FILE attribute based on value passed in setsparse */
1875 static bool smb2_set_sparse(const unsigned int xid, struct cifs_tcon *tcon,
1876 struct cifsFileInfo *cfile, struct inode *inode, __u8 setsparse)
1878 struct cifsInodeInfo *cifsi;
1881 cifsi = CIFS_I(inode);
1883 /* if file already sparse don't bother setting sparse again */
1884 if ((cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) && setsparse)
1885 return true; /* already sparse */
1887 if (!(cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) && !setsparse)
1888 return true; /* already not sparse */
1891 * Can't check for sparse support on share the usual way via the
1892 * FS attribute info (FILE_SUPPORTS_SPARSE_FILES) on the share
1893 * since Samba server doesn't set the flag on the share, yet
1894 * supports the set sparse FSCTL and returns sparse correctly
1895 * in the file attributes. If we fail setting sparse though we
1896 * mark that server does not support sparse files for this share
1897 * to avoid repeatedly sending the unsupported fsctl to server
1898 * if the file is repeatedly extended.
1900 if (tcon->broken_sparse_sup)
1903 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
1904 cfile->fid.volatile_fid, FSCTL_SET_SPARSE,
1905 &setsparse, 1, CIFSMaxBufSize, NULL, NULL);
1907 tcon->broken_sparse_sup = true;
1908 cifs_dbg(FYI, "set sparse rc = %d\n", rc);
1913 cifsi->cifsAttrs |= FILE_ATTRIBUTE_SPARSE_FILE;
1915 cifsi->cifsAttrs &= (~FILE_ATTRIBUTE_SPARSE_FILE);
1921 smb2_set_file_size(const unsigned int xid, struct cifs_tcon *tcon,
1922 struct cifsFileInfo *cfile, __u64 size, bool set_alloc)
1924 __le64 eof = cpu_to_le64(size);
1925 struct inode *inode;
1928 * If extending file more than one page make sparse. Many Linux fs
1929 * make files sparse by default when extending via ftruncate
1931 inode = d_inode(cfile->dentry);
1933 if (!set_alloc && (size > inode->i_size + 8192)) {
1934 __u8 set_sparse = 1;
1936 /* whether set sparse succeeds or not, extend the file */
1937 smb2_set_sparse(xid, tcon, cfile, inode, set_sparse);
1940 return SMB2_set_eof(xid, tcon, cfile->fid.persistent_fid,
1941 cfile->fid.volatile_fid, cfile->pid, &eof);
1945 smb2_duplicate_extents(const unsigned int xid,
1946 struct cifsFileInfo *srcfile,
1947 struct cifsFileInfo *trgtfile, u64 src_off,
1948 u64 len, u64 dest_off)
1951 unsigned int ret_data_len;
1952 struct inode *inode;
1953 struct duplicate_extents_to_file dup_ext_buf;
1954 struct cifs_tcon *tcon = tlink_tcon(trgtfile->tlink);
1956 /* server fileays advertise duplicate extent support with this flag */
1957 if ((le32_to_cpu(tcon->fsAttrInfo.Attributes) &
1958 FILE_SUPPORTS_BLOCK_REFCOUNTING) == 0)
1961 dup_ext_buf.VolatileFileHandle = srcfile->fid.volatile_fid;
1962 dup_ext_buf.PersistentFileHandle = srcfile->fid.persistent_fid;
1963 dup_ext_buf.SourceFileOffset = cpu_to_le64(src_off);
1964 dup_ext_buf.TargetFileOffset = cpu_to_le64(dest_off);
1965 dup_ext_buf.ByteCount = cpu_to_le64(len);
1966 cifs_dbg(FYI, "Duplicate extents: src off %lld dst off %lld len %lld\n",
1967 src_off, dest_off, len);
1969 inode = d_inode(trgtfile->dentry);
1970 if (inode->i_size < dest_off + len) {
1971 rc = smb2_set_file_size(xid, tcon, trgtfile, dest_off + len, false);
1973 goto duplicate_extents_out;
1976 * Although also could set plausible allocation size (i_blocks)
1977 * here in addition to setting the file size, in reflink
1978 * it is likely that the target file is sparse. Its allocation
1979 * size will be queried on next revalidate, but it is important
1980 * to make sure that file's cached size is updated immediately
1982 cifs_setsize(inode, dest_off + len);
1984 rc = SMB2_ioctl(xid, tcon, trgtfile->fid.persistent_fid,
1985 trgtfile->fid.volatile_fid,
1986 FSCTL_DUPLICATE_EXTENTS_TO_FILE,
1987 (char *)&dup_ext_buf,
1988 sizeof(struct duplicate_extents_to_file),
1989 CIFSMaxBufSize, NULL,
1992 if (ret_data_len > 0)
1993 cifs_dbg(FYI, "Non-zero response length in duplicate extents\n");
1995 duplicate_extents_out:
2000 smb2_set_compression(const unsigned int xid, struct cifs_tcon *tcon,
2001 struct cifsFileInfo *cfile)
2003 return SMB2_set_compression(xid, tcon, cfile->fid.persistent_fid,
2004 cfile->fid.volatile_fid);
2008 smb3_set_integrity(const unsigned int xid, struct cifs_tcon *tcon,
2009 struct cifsFileInfo *cfile)
2011 struct fsctl_set_integrity_information_req integr_info;
2012 unsigned int ret_data_len;
2014 integr_info.ChecksumAlgorithm = cpu_to_le16(CHECKSUM_TYPE_UNCHANGED);
2015 integr_info.Flags = 0;
2016 integr_info.Reserved = 0;
2018 return SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
2019 cfile->fid.volatile_fid,
2020 FSCTL_SET_INTEGRITY_INFORMATION,
2021 (char *)&integr_info,
2022 sizeof(struct fsctl_set_integrity_information_req),
2023 CIFSMaxBufSize, NULL,
2028 /* GMT Token is @GMT-YYYY.MM.DD-HH.MM.SS Unicode which is 48 bytes + null */
2029 #define GMT_TOKEN_SIZE 50
2031 #define MIN_SNAPSHOT_ARRAY_SIZE 16 /* See MS-SMB2 section 3.3.5.15.1 */
2034 * Input buffer contains (empty) struct smb_snapshot array with size filled in
2035 * For output see struct SRV_SNAPSHOT_ARRAY in MS-SMB2 section 2.2.32.2
2038 smb3_enum_snapshots(const unsigned int xid, struct cifs_tcon *tcon,
2039 struct cifsFileInfo *cfile, void __user *ioc_buf)
2041 char *retbuf = NULL;
2042 unsigned int ret_data_len = 0;
2044 u32 max_response_size;
2045 struct smb_snapshot_array snapshot_in;
2048 * On the first query to enumerate the list of snapshots available
2049 * for this volume the buffer begins with 0 (number of snapshots
2050 * which can be returned is zero since at that point we do not know
2051 * how big the buffer needs to be). On the second query,
2052 * it (ret_data_len) is set to number of snapshots so we can
2053 * know to set the maximum response size larger (see below).
2055 if (get_user(ret_data_len, (unsigned int __user *)ioc_buf))
2059 * Note that for snapshot queries that servers like Azure expect that
2060 * the first query be minimal size (and just used to get the number/size
2061 * of previous versions) so response size must be specified as EXACTLY
2062 * sizeof(struct snapshot_array) which is 16 when rounded up to multiple
2065 if (ret_data_len == 0)
2066 max_response_size = MIN_SNAPSHOT_ARRAY_SIZE;
2068 max_response_size = CIFSMaxBufSize;
2070 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
2071 cfile->fid.volatile_fid,
2072 FSCTL_SRV_ENUMERATE_SNAPSHOTS,
2073 NULL, 0 /* no input data */, max_response_size,
2076 cifs_dbg(FYI, "enum snaphots ioctl returned %d and ret buflen is %d\n",
2081 if (ret_data_len && (ioc_buf != NULL) && (retbuf != NULL)) {
2083 if (copy_from_user(&snapshot_in, ioc_buf,
2084 sizeof(struct smb_snapshot_array))) {
2091 * Check for min size, ie not large enough to fit even one GMT
2092 * token (snapshot). On the first ioctl some users may pass in
2093 * smaller size (or zero) to simply get the size of the array
2094 * so the user space caller can allocate sufficient memory
2095 * and retry the ioctl again with larger array size sufficient
2096 * to hold all of the snapshot GMT tokens on the second try.
2098 if (snapshot_in.snapshot_array_size < GMT_TOKEN_SIZE)
2099 ret_data_len = sizeof(struct smb_snapshot_array);
2102 * We return struct SRV_SNAPSHOT_ARRAY, followed by
2103 * the snapshot array (of 50 byte GMT tokens) each
2104 * representing an available previous version of the data
2106 if (ret_data_len > (snapshot_in.snapshot_array_size +
2107 sizeof(struct smb_snapshot_array)))
2108 ret_data_len = snapshot_in.snapshot_array_size +
2109 sizeof(struct smb_snapshot_array);
2111 if (copy_to_user(ioc_buf, retbuf, ret_data_len))
2122 smb3_notify(const unsigned int xid, struct file *pfile,
2123 void __user *ioc_buf, bool return_changes)
2125 struct smb3_notify_info notify;
2126 struct smb3_notify_info __user *pnotify_buf;
2127 struct dentry *dentry = pfile->f_path.dentry;
2128 struct inode *inode = file_inode(pfile);
2129 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
2130 struct cifs_open_parms oparms;
2131 struct cifs_fid fid;
2132 struct cifs_tcon *tcon;
2133 const unsigned char *path;
2134 char *returned_ioctl_info = NULL;
2135 void *page = alloc_dentry_path();
2136 __le16 *utf16_path = NULL;
2137 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
2141 path = build_path_from_dentry(dentry, page);
2147 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
2148 if (utf16_path == NULL) {
2153 if (return_changes) {
2154 if (copy_from_user(¬ify, ioc_buf, sizeof(struct smb3_notify_info))) {
2159 if (copy_from_user(¬ify, ioc_buf, sizeof(struct smb3_notify))) {
2163 notify.data_len = 0;
2166 tcon = cifs_sb_master_tcon(cifs_sb);
2167 oparms = (struct cifs_open_parms) {
2170 .desired_access = FILE_READ_ATTRIBUTES | FILE_READ_DATA,
2171 .disposition = FILE_OPEN,
2172 .create_options = cifs_create_options(cifs_sb, 0),
2176 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL, NULL,
2181 rc = SMB2_change_notify(xid, tcon, fid.persistent_fid, fid.volatile_fid,
2182 notify.watch_tree, notify.completion_filter,
2183 notify.data_len, &returned_ioctl_info, &ret_len);
2185 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
2187 cifs_dbg(FYI, "change notify for path %s rc %d\n", path, rc);
2188 if (return_changes && (ret_len > 0) && (notify.data_len > 0)) {
2189 if (ret_len > notify.data_len)
2190 ret_len = notify.data_len;
2191 pnotify_buf = (struct smb3_notify_info __user *)ioc_buf;
2192 if (copy_to_user(pnotify_buf->notify_data, returned_ioctl_info, ret_len))
2194 else if (copy_to_user(&pnotify_buf->data_len, &ret_len, sizeof(ret_len)))
2197 kfree(returned_ioctl_info);
2199 free_dentry_path(page);
2205 smb2_query_dir_first(const unsigned int xid, struct cifs_tcon *tcon,
2206 const char *path, struct cifs_sb_info *cifs_sb,
2207 struct cifs_fid *fid, __u16 search_flags,
2208 struct cifs_search_info *srch_inf)
2211 struct smb_rqst rqst[2];
2212 struct kvec rsp_iov[2];
2213 int resp_buftype[2];
2214 struct kvec open_iov[SMB2_CREATE_IOV_SIZE];
2215 struct kvec qd_iov[SMB2_QUERY_DIRECTORY_IOV_SIZE];
2217 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
2218 struct cifs_open_parms oparms;
2219 struct smb2_query_directory_rsp *qd_rsp = NULL;
2220 struct smb2_create_rsp *op_rsp = NULL;
2221 struct TCP_Server_Info *server = cifs_pick_channel(tcon->ses);
2222 int retry_count = 0;
2224 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
2228 if (smb3_encryption_required(tcon))
2229 flags |= CIFS_TRANSFORM_REQ;
2231 memset(rqst, 0, sizeof(rqst));
2232 resp_buftype[0] = resp_buftype[1] = CIFS_NO_BUFFER;
2233 memset(rsp_iov, 0, sizeof(rsp_iov));
2236 memset(&open_iov, 0, sizeof(open_iov));
2237 rqst[0].rq_iov = open_iov;
2238 rqst[0].rq_nvec = SMB2_CREATE_IOV_SIZE;
2240 oparms = (struct cifs_open_parms) {
2243 .desired_access = FILE_READ_ATTRIBUTES | FILE_READ_DATA,
2244 .disposition = FILE_OPEN,
2245 .create_options = cifs_create_options(cifs_sb, 0),
2249 rc = SMB2_open_init(tcon, server,
2250 &rqst[0], &oplock, &oparms, utf16_path);
2253 smb2_set_next_command(tcon, &rqst[0]);
2255 /* Query directory */
2256 srch_inf->entries_in_buffer = 0;
2257 srch_inf->index_of_last_entry = 2;
2259 memset(&qd_iov, 0, sizeof(qd_iov));
2260 rqst[1].rq_iov = qd_iov;
2261 rqst[1].rq_nvec = SMB2_QUERY_DIRECTORY_IOV_SIZE;
2263 rc = SMB2_query_directory_init(xid, tcon, server,
2265 COMPOUND_FID, COMPOUND_FID,
2266 0, srch_inf->info_level);
2270 smb2_set_related(&rqst[1]);
2273 rc = compound_send_recv(xid, tcon->ses, server,
2275 resp_buftype, rsp_iov);
2277 if (rc == -EAGAIN && retry_count++ < 10)
2280 /* If the open failed there is nothing to do */
2281 op_rsp = (struct smb2_create_rsp *)rsp_iov[0].iov_base;
2282 if (op_rsp == NULL || op_rsp->hdr.Status != STATUS_SUCCESS) {
2283 cifs_dbg(FYI, "query_dir_first: open failed rc=%d\n", rc);
2286 fid->persistent_fid = op_rsp->PersistentFileId;
2287 fid->volatile_fid = op_rsp->VolatileFileId;
2289 /* Anything else than ENODATA means a genuine error */
2290 if (rc && rc != -ENODATA) {
2291 SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
2292 cifs_dbg(FYI, "query_dir_first: query directory failed rc=%d\n", rc);
2293 trace_smb3_query_dir_err(xid, fid->persistent_fid,
2294 tcon->tid, tcon->ses->Suid, 0, 0, rc);
2298 atomic_inc(&tcon->num_remote_opens);
2300 qd_rsp = (struct smb2_query_directory_rsp *)rsp_iov[1].iov_base;
2301 if (qd_rsp->hdr.Status == STATUS_NO_MORE_FILES) {
2302 trace_smb3_query_dir_done(xid, fid->persistent_fid,
2303 tcon->tid, tcon->ses->Suid, 0, 0);
2304 srch_inf->endOfSearch = true;
2309 rc = smb2_parse_query_directory(tcon, &rsp_iov[1], resp_buftype[1],
2312 trace_smb3_query_dir_err(xid, fid->persistent_fid, tcon->tid,
2313 tcon->ses->Suid, 0, 0, rc);
2316 resp_buftype[1] = CIFS_NO_BUFFER;
2318 trace_smb3_query_dir_done(xid, fid->persistent_fid, tcon->tid,
2319 tcon->ses->Suid, 0, srch_inf->entries_in_buffer);
2323 SMB2_open_free(&rqst[0]);
2324 SMB2_query_directory_free(&rqst[1]);
2325 free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base);
2326 free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base);
2331 smb2_query_dir_next(const unsigned int xid, struct cifs_tcon *tcon,
2332 struct cifs_fid *fid, __u16 search_flags,
2333 struct cifs_search_info *srch_inf)
2335 return SMB2_query_directory(xid, tcon, fid->persistent_fid,
2336 fid->volatile_fid, 0, srch_inf);
2340 smb2_close_dir(const unsigned int xid, struct cifs_tcon *tcon,
2341 struct cifs_fid *fid)
2343 return SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
2347 * If we negotiate SMB2 protocol and get STATUS_PENDING - update
2348 * the number of credits and return true. Otherwise - return false.
2351 smb2_is_status_pending(char *buf, struct TCP_Server_Info *server)
2353 struct smb2_hdr *shdr = (struct smb2_hdr *)buf;
2354 int scredits, in_flight;
2356 if (shdr->Status != STATUS_PENDING)
2359 if (shdr->CreditRequest) {
2360 spin_lock(&server->req_lock);
2361 server->credits += le16_to_cpu(shdr->CreditRequest);
2362 scredits = server->credits;
2363 in_flight = server->in_flight;
2364 spin_unlock(&server->req_lock);
2365 wake_up(&server->request_q);
2367 trace_smb3_pend_credits(server->CurrentMid,
2368 server->conn_id, server->hostname, scredits,
2369 le16_to_cpu(shdr->CreditRequest), in_flight);
2370 cifs_dbg(FYI, "%s: status pending add %u credits total=%d\n",
2371 __func__, le16_to_cpu(shdr->CreditRequest), scredits);
2378 smb2_is_session_expired(char *buf)
2380 struct smb2_hdr *shdr = (struct smb2_hdr *)buf;
2382 if (shdr->Status != STATUS_NETWORK_SESSION_EXPIRED &&
2383 shdr->Status != STATUS_USER_SESSION_DELETED)
2386 trace_smb3_ses_expired(le32_to_cpu(shdr->Id.SyncId.TreeId),
2387 le64_to_cpu(shdr->SessionId),
2388 le16_to_cpu(shdr->Command),
2389 le64_to_cpu(shdr->MessageId));
2390 cifs_dbg(FYI, "Session expired or deleted\n");
2396 smb2_is_status_io_timeout(char *buf)
2398 struct smb2_hdr *shdr = (struct smb2_hdr *)buf;
2400 if (shdr->Status == STATUS_IO_TIMEOUT)
2407 smb2_is_network_name_deleted(char *buf, struct TCP_Server_Info *server)
2409 struct smb2_hdr *shdr = (struct smb2_hdr *)buf;
2410 struct TCP_Server_Info *pserver;
2411 struct cifs_ses *ses;
2412 struct cifs_tcon *tcon;
2414 if (shdr->Status != STATUS_NETWORK_NAME_DELETED)
2417 /* If server is a channel, select the primary channel */
2418 pserver = SERVER_IS_CHAN(server) ? server->primary_server : server;
2420 spin_lock(&cifs_tcp_ses_lock);
2421 list_for_each_entry(ses, &pserver->smb_ses_list, smb_ses_list) {
2422 list_for_each_entry(tcon, &ses->tcon_list, tcon_list) {
2423 if (tcon->tid == le32_to_cpu(shdr->Id.SyncId.TreeId)) {
2424 spin_lock(&tcon->tc_lock);
2425 tcon->need_reconnect = true;
2426 spin_unlock(&tcon->tc_lock);
2427 spin_unlock(&cifs_tcp_ses_lock);
2428 pr_warn_once("Server share %s deleted.\n",
2434 spin_unlock(&cifs_tcp_ses_lock);
2440 smb2_oplock_response(struct cifs_tcon *tcon, __u64 persistent_fid,
2441 __u64 volatile_fid, __u16 net_fid, struct cifsInodeInfo *cinode)
2443 if (tcon->ses->server->capabilities & SMB2_GLOBAL_CAP_LEASING)
2444 return SMB2_lease_break(0, tcon, cinode->lease_key,
2445 smb2_get_lease_state(cinode));
2447 return SMB2_oplock_break(0, tcon, persistent_fid, volatile_fid,
2448 CIFS_CACHE_READ(cinode) ? 1 : 0);
2452 smb2_set_related(struct smb_rqst *rqst)
2454 struct smb2_hdr *shdr;
2456 shdr = (struct smb2_hdr *)(rqst->rq_iov[0].iov_base);
2458 cifs_dbg(FYI, "shdr NULL in smb2_set_related\n");
2461 shdr->Flags |= SMB2_FLAGS_RELATED_OPERATIONS;
2464 char smb2_padding[7] = {0, 0, 0, 0, 0, 0, 0};
2467 smb2_set_next_command(struct cifs_tcon *tcon, struct smb_rqst *rqst)
2469 struct smb2_hdr *shdr;
2470 struct cifs_ses *ses = tcon->ses;
2471 struct TCP_Server_Info *server = ses->server;
2472 unsigned long len = smb_rqst_len(server, rqst);
2475 shdr = (struct smb2_hdr *)(rqst->rq_iov[0].iov_base);
2477 cifs_dbg(FYI, "shdr NULL in smb2_set_next_command\n");
2481 /* SMB headers in a compound are 8 byte aligned. */
2483 /* No padding needed */
2487 num_padding = 8 - (len & 7);
2488 if (!smb3_encryption_required(tcon)) {
2490 * If we do not have encryption then we can just add an extra
2491 * iov for the padding.
2493 rqst->rq_iov[rqst->rq_nvec].iov_base = smb2_padding;
2494 rqst->rq_iov[rqst->rq_nvec].iov_len = num_padding;
2499 * We can not add a small padding iov for the encryption case
2500 * because the encryption framework can not handle the padding
2502 * We have to flatten this into a single buffer and add
2503 * the padding to it.
2505 for (i = 1; i < rqst->rq_nvec; i++) {
2506 memcpy(rqst->rq_iov[0].iov_base +
2507 rqst->rq_iov[0].iov_len,
2508 rqst->rq_iov[i].iov_base,
2509 rqst->rq_iov[i].iov_len);
2510 rqst->rq_iov[0].iov_len += rqst->rq_iov[i].iov_len;
2512 memset(rqst->rq_iov[0].iov_base + rqst->rq_iov[0].iov_len,
2514 rqst->rq_iov[0].iov_len += num_padding;
2520 shdr->NextCommand = cpu_to_le32(len);
2524 * Passes the query info response back to the caller on success.
2525 * Caller need to free this with free_rsp_buf().
2528 smb2_query_info_compound(const unsigned int xid, struct cifs_tcon *tcon,
2529 const char *path, u32 desired_access,
2530 u32 class, u32 type, u32 output_len,
2531 struct kvec *rsp, int *buftype,
2532 struct cifs_sb_info *cifs_sb)
2534 struct smb2_compound_vars *vars;
2535 struct cifs_ses *ses = tcon->ses;
2536 struct TCP_Server_Info *server = cifs_pick_channel(ses);
2537 int flags = CIFS_CP_CREATE_CLOSE_OP;
2538 struct smb_rqst *rqst;
2539 int resp_buftype[3];
2540 struct kvec *rsp_iov;
2541 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
2542 struct cifs_open_parms oparms;
2543 struct cifs_fid fid;
2546 struct cached_fid *cfid = NULL;
2550 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
2554 if (smb3_encryption_required(tcon))
2555 flags |= CIFS_TRANSFORM_REQ;
2557 resp_buftype[0] = resp_buftype[1] = resp_buftype[2] = CIFS_NO_BUFFER;
2558 vars = kzalloc(sizeof(*vars), GFP_KERNEL);
2564 rsp_iov = vars->rsp_iov;
2567 * We can only call this for things we know are directories.
2569 if (!strcmp(path, ""))
2570 open_cached_dir(xid, tcon, path, cifs_sb, false,
2571 &cfid); /* cfid null if open dir failed */
2573 rqst[0].rq_iov = vars->open_iov;
2574 rqst[0].rq_nvec = SMB2_CREATE_IOV_SIZE;
2576 oparms = (struct cifs_open_parms) {
2579 .desired_access = desired_access,
2580 .disposition = FILE_OPEN,
2581 .create_options = cifs_create_options(cifs_sb, 0),
2585 rc = SMB2_open_init(tcon, server,
2586 &rqst[0], &oplock, &oparms, utf16_path);
2589 smb2_set_next_command(tcon, &rqst[0]);
2591 rqst[1].rq_iov = &vars->qi_iov;
2592 rqst[1].rq_nvec = 1;
2595 rc = SMB2_query_info_init(tcon, server,
2597 cfid->fid.persistent_fid,
2598 cfid->fid.volatile_fid,
2603 rc = SMB2_query_info_init(tcon, server,
2614 smb2_set_next_command(tcon, &rqst[1]);
2615 smb2_set_related(&rqst[1]);
2618 rqst[2].rq_iov = &vars->close_iov;
2619 rqst[2].rq_nvec = 1;
2621 rc = SMB2_close_init(tcon, server,
2622 &rqst[2], COMPOUND_FID, COMPOUND_FID, false);
2625 smb2_set_related(&rqst[2]);
2628 rc = compound_send_recv(xid, ses, server,
2630 &resp_buftype[1], &rsp_iov[1]);
2632 rc = compound_send_recv(xid, ses, server,
2634 resp_buftype, rsp_iov);
2637 free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base);
2638 if (rc == -EREMCHG) {
2639 tcon->need_reconnect = true;
2640 pr_warn_once("server share %s deleted\n",
2646 *buftype = resp_buftype[1];
2649 SMB2_open_free(&rqst[0]);
2650 SMB2_query_info_free(&rqst[1]);
2651 SMB2_close_free(&rqst[2]);
2652 free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base);
2653 free_rsp_buf(resp_buftype[2], rsp_iov[2].iov_base);
2655 close_cached_dir(cfid);
2663 smb2_queryfs(const unsigned int xid, struct cifs_tcon *tcon,
2664 struct cifs_sb_info *cifs_sb, struct kstatfs *buf)
2666 struct smb2_query_info_rsp *rsp;
2667 struct smb2_fs_full_size_info *info = NULL;
2668 struct kvec rsp_iov = {NULL, 0};
2669 int buftype = CIFS_NO_BUFFER;
2673 rc = smb2_query_info_compound(xid, tcon, "",
2674 FILE_READ_ATTRIBUTES,
2675 FS_FULL_SIZE_INFORMATION,
2676 SMB2_O_INFO_FILESYSTEM,
2677 sizeof(struct smb2_fs_full_size_info),
2678 &rsp_iov, &buftype, cifs_sb);
2682 rsp = (struct smb2_query_info_rsp *)rsp_iov.iov_base;
2683 buf->f_type = SMB2_SUPER_MAGIC;
2684 info = (struct smb2_fs_full_size_info *)(
2685 le16_to_cpu(rsp->OutputBufferOffset) + (char *)rsp);
2686 rc = smb2_validate_iov(le16_to_cpu(rsp->OutputBufferOffset),
2687 le32_to_cpu(rsp->OutputBufferLength),
2689 sizeof(struct smb2_fs_full_size_info));
2691 smb2_copy_fs_info_to_kstatfs(info, buf);
2694 trace_smb3_qfs_done(xid, tcon->tid, tcon->ses->Suid, tcon->tree_name, rc);
2695 free_rsp_buf(buftype, rsp_iov.iov_base);
2700 smb311_queryfs(const unsigned int xid, struct cifs_tcon *tcon,
2701 struct cifs_sb_info *cifs_sb, struct kstatfs *buf)
2704 __le16 srch_path = 0; /* Null - open root of share */
2705 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
2706 struct cifs_open_parms oparms;
2707 struct cifs_fid fid;
2709 if (!tcon->posix_extensions)
2710 return smb2_queryfs(xid, tcon, cifs_sb, buf);
2712 oparms = (struct cifs_open_parms) {
2715 .desired_access = FILE_READ_ATTRIBUTES,
2716 .disposition = FILE_OPEN,
2717 .create_options = cifs_create_options(cifs_sb, 0),
2721 rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL,
2726 rc = SMB311_posix_qfs_info(xid, tcon, fid.persistent_fid,
2727 fid.volatile_fid, buf);
2728 buf->f_type = SMB2_SUPER_MAGIC;
2729 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
2734 smb2_compare_fids(struct cifsFileInfo *ob1, struct cifsFileInfo *ob2)
2736 return ob1->fid.persistent_fid == ob2->fid.persistent_fid &&
2737 ob1->fid.volatile_fid == ob2->fid.volatile_fid;
2741 smb2_mand_lock(const unsigned int xid, struct cifsFileInfo *cfile, __u64 offset,
2742 __u64 length, __u32 type, int lock, int unlock, bool wait)
2744 if (unlock && !lock)
2745 type = SMB2_LOCKFLAG_UNLOCK;
2746 return SMB2_lock(xid, tlink_tcon(cfile->tlink),
2747 cfile->fid.persistent_fid, cfile->fid.volatile_fid,
2748 current->tgid, length, offset, type, wait);
2752 smb2_get_lease_key(struct inode *inode, struct cifs_fid *fid)
2754 memcpy(fid->lease_key, CIFS_I(inode)->lease_key, SMB2_LEASE_KEY_SIZE);
2758 smb2_set_lease_key(struct inode *inode, struct cifs_fid *fid)
2760 memcpy(CIFS_I(inode)->lease_key, fid->lease_key, SMB2_LEASE_KEY_SIZE);
2764 smb2_new_lease_key(struct cifs_fid *fid)
2766 generate_random_uuid(fid->lease_key);
2770 smb2_get_dfs_refer(const unsigned int xid, struct cifs_ses *ses,
2771 const char *search_name,
2772 struct dfs_info3_param **target_nodes,
2773 unsigned int *num_of_nodes,
2774 const struct nls_table *nls_codepage, int remap)
2777 __le16 *utf16_path = NULL;
2778 int utf16_path_len = 0;
2779 struct cifs_tcon *tcon;
2780 struct fsctl_get_dfs_referral_req *dfs_req = NULL;
2781 struct get_dfs_referral_rsp *dfs_rsp = NULL;
2782 u32 dfs_req_size = 0, dfs_rsp_size = 0;
2783 int retry_count = 0;
2785 cifs_dbg(FYI, "%s: path: %s\n", __func__, search_name);
2788 * Try to use the IPC tcon, otherwise just use any
2790 tcon = ses->tcon_ipc;
2792 spin_lock(&cifs_tcp_ses_lock);
2793 tcon = list_first_entry_or_null(&ses->tcon_list,
2798 spin_unlock(&cifs_tcp_ses_lock);
2802 cifs_dbg(VFS, "session %p has no tcon available for a dfs referral request\n",
2808 utf16_path = cifs_strndup_to_utf16(search_name, PATH_MAX,
2810 nls_codepage, remap);
2816 dfs_req_size = sizeof(*dfs_req) + utf16_path_len;
2817 dfs_req = kzalloc(dfs_req_size, GFP_KERNEL);
2823 /* Highest DFS referral version understood */
2824 dfs_req->MaxReferralLevel = DFS_VERSION;
2826 /* Path to resolve in an UTF-16 null-terminated string */
2827 memcpy(dfs_req->RequestFileName, utf16_path, utf16_path_len);
2830 rc = SMB2_ioctl(xid, tcon, NO_FILE_ID, NO_FILE_ID,
2831 FSCTL_DFS_GET_REFERRALS,
2832 (char *)dfs_req, dfs_req_size, CIFSMaxBufSize,
2833 (char **)&dfs_rsp, &dfs_rsp_size);
2834 if (!is_retryable_error(rc))
2836 usleep_range(512, 2048);
2837 } while (++retry_count < 5);
2839 if (!rc && !dfs_rsp)
2842 if (!is_retryable_error(rc) && rc != -ENOENT && rc != -EOPNOTSUPP)
2843 cifs_tcon_dbg(VFS, "%s: ioctl error: rc=%d\n", __func__, rc);
2847 rc = parse_dfs_referrals(dfs_rsp, dfs_rsp_size,
2848 num_of_nodes, target_nodes,
2849 nls_codepage, remap, search_name,
2850 true /* is_unicode */);
2852 cifs_tcon_dbg(VFS, "parse error in %s rc=%d\n", __func__, rc);
2857 if (tcon && !tcon->ipc) {
2858 /* ipc tcons are not refcounted */
2859 spin_lock(&cifs_tcp_ses_lock);
2861 /* tc_count can never go negative */
2862 WARN_ON(tcon->tc_count < 0);
2863 spin_unlock(&cifs_tcp_ses_lock);
2871 /* See MS-FSCC 2.1.2.6 for the 'NFS' style reparse tags */
2872 static int parse_reparse_posix(struct reparse_posix_data *buf,
2873 struct cifs_sb_info *cifs_sb,
2874 struct cifs_open_info_data *data)
2879 switch ((type = le64_to_cpu(buf->InodeType))) {
2880 case NFS_SPECFILE_LNK:
2881 len = le16_to_cpu(buf->ReparseDataLength);
2882 data->symlink_target = cifs_strndup_from_utf16(buf->DataBuffer,
2884 cifs_sb->local_nls);
2885 if (!data->symlink_target)
2887 convert_delimiter(data->symlink_target, '/');
2888 cifs_dbg(FYI, "%s: target path: %s\n",
2889 __func__, data->symlink_target);
2891 case NFS_SPECFILE_CHR:
2892 case NFS_SPECFILE_BLK:
2893 case NFS_SPECFILE_FIFO:
2894 case NFS_SPECFILE_SOCK:
2897 cifs_dbg(VFS, "%s: unhandled inode type: 0x%llx\n",
2904 static int parse_reparse_symlink(struct reparse_symlink_data_buffer *sym,
2905 u32 plen, bool unicode,
2906 struct cifs_sb_info *cifs_sb,
2907 struct cifs_open_info_data *data)
2912 /* We handle Symbolic Link reparse tag here. See: MS-FSCC 2.1.2.4 */
2914 offs = le16_to_cpu(sym->SubstituteNameOffset);
2915 len = le16_to_cpu(sym->SubstituteNameLength);
2916 if (offs + 20 > plen || offs + len + 20 > plen) {
2917 cifs_dbg(VFS, "srv returned malformed symlink buffer\n");
2921 data->symlink_target = cifs_strndup_from_utf16(sym->PathBuffer + offs,
2923 cifs_sb->local_nls);
2924 if (!data->symlink_target)
2927 convert_delimiter(data->symlink_target, '/');
2928 cifs_dbg(FYI, "%s: target path: %s\n", __func__, data->symlink_target);
2933 int parse_reparse_point(struct reparse_data_buffer *buf,
2934 u32 plen, struct cifs_sb_info *cifs_sb,
2935 bool unicode, struct cifs_open_info_data *data)
2937 if (plen < sizeof(*buf)) {
2938 cifs_dbg(VFS, "%s: reparse buffer is too small. Must be at least 8 bytes but was %d\n",
2943 if (plen < le16_to_cpu(buf->ReparseDataLength) + sizeof(*buf)) {
2944 cifs_dbg(VFS, "%s: invalid reparse buf length: %d\n",
2949 data->reparse.buf = buf;
2951 /* See MS-FSCC 2.1.2 */
2952 switch (le32_to_cpu(buf->ReparseTag)) {
2953 case IO_REPARSE_TAG_NFS:
2954 return parse_reparse_posix((struct reparse_posix_data *)buf,
2956 case IO_REPARSE_TAG_SYMLINK:
2957 return parse_reparse_symlink(
2958 (struct reparse_symlink_data_buffer *)buf,
2959 plen, unicode, cifs_sb, data);
2960 case IO_REPARSE_TAG_LX_SYMLINK:
2961 case IO_REPARSE_TAG_AF_UNIX:
2962 case IO_REPARSE_TAG_LX_FIFO:
2963 case IO_REPARSE_TAG_LX_CHR:
2964 case IO_REPARSE_TAG_LX_BLK:
2967 cifs_dbg(VFS, "%s: unhandled reparse tag: 0x%08x\n",
2968 __func__, le32_to_cpu(buf->ReparseTag));
2973 static int smb2_parse_reparse_point(struct cifs_sb_info *cifs_sb,
2974 struct kvec *rsp_iov,
2975 struct cifs_open_info_data *data)
2977 struct reparse_data_buffer *buf;
2978 struct smb2_ioctl_rsp *io = rsp_iov->iov_base;
2979 u32 plen = le32_to_cpu(io->OutputCount);
2981 buf = (struct reparse_data_buffer *)((u8 *)io +
2982 le32_to_cpu(io->OutputOffset));
2983 return parse_reparse_point(buf, plen, cifs_sb, true, data);
2986 static int smb2_query_reparse_point(const unsigned int xid,
2987 struct cifs_tcon *tcon,
2988 struct cifs_sb_info *cifs_sb,
2989 const char *full_path,
2990 u32 *tag, struct kvec *rsp,
2993 struct smb2_compound_vars *vars;
2995 __le16 *utf16_path = NULL;
2996 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
2997 struct cifs_open_parms oparms;
2998 struct cifs_fid fid;
2999 struct TCP_Server_Info *server = cifs_pick_channel(tcon->ses);
3000 int flags = CIFS_CP_CREATE_CLOSE_OP;
3001 struct smb_rqst *rqst;
3002 int resp_buftype[3];
3003 struct kvec *rsp_iov;
3004 struct smb2_ioctl_rsp *ioctl_rsp;
3005 struct reparse_data_buffer *reparse_buf;
3008 cifs_dbg(FYI, "%s: path: %s\n", __func__, full_path);
3010 if (smb3_encryption_required(tcon))
3011 flags |= CIFS_TRANSFORM_REQ;
3013 utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb);
3017 resp_buftype[0] = resp_buftype[1] = resp_buftype[2] = CIFS_NO_BUFFER;
3018 vars = kzalloc(sizeof(*vars), GFP_KERNEL);
3024 rsp_iov = vars->rsp_iov;
3027 * setup smb2open - TODO add optimization to call cifs_get_readable_path
3028 * to see if there is a handle already open that we can use
3030 rqst[0].rq_iov = vars->open_iov;
3031 rqst[0].rq_nvec = SMB2_CREATE_IOV_SIZE;
3033 oparms = (struct cifs_open_parms) {
3036 .desired_access = FILE_READ_ATTRIBUTES,
3037 .disposition = FILE_OPEN,
3038 .create_options = cifs_create_options(cifs_sb, OPEN_REPARSE_POINT),
3042 rc = SMB2_open_init(tcon, server,
3043 &rqst[0], &oplock, &oparms, utf16_path);
3046 smb2_set_next_command(tcon, &rqst[0]);
3050 rqst[1].rq_iov = vars->io_iov;
3051 rqst[1].rq_nvec = SMB2_IOCTL_IOV_SIZE;
3053 rc = SMB2_ioctl_init(tcon, server,
3054 &rqst[1], COMPOUND_FID,
3055 COMPOUND_FID, FSCTL_GET_REPARSE_POINT, NULL, 0,
3057 MAX_SMB2_CREATE_RESPONSE_SIZE -
3058 MAX_SMB2_CLOSE_RESPONSE_SIZE);
3062 smb2_set_next_command(tcon, &rqst[1]);
3063 smb2_set_related(&rqst[1]);
3066 rqst[2].rq_iov = &vars->close_iov;
3067 rqst[2].rq_nvec = 1;
3069 rc = SMB2_close_init(tcon, server,
3070 &rqst[2], COMPOUND_FID, COMPOUND_FID, false);
3074 smb2_set_related(&rqst[2]);
3076 rc = compound_send_recv(xid, tcon->ses, server,
3078 resp_buftype, rsp_iov);
3080 ioctl_rsp = rsp_iov[1].iov_base;
3083 * Open was successful and we got an ioctl response.
3086 /* See MS-FSCC 2.3.23 */
3088 reparse_buf = (struct reparse_data_buffer *)
3089 ((char *)ioctl_rsp +
3090 le32_to_cpu(ioctl_rsp->OutputOffset));
3091 plen = le32_to_cpu(ioctl_rsp->OutputCount);
3093 if (plen + le32_to_cpu(ioctl_rsp->OutputOffset) >
3094 rsp_iov[1].iov_len) {
3095 cifs_tcon_dbg(FYI, "srv returned invalid ioctl len: %d\n",
3100 *tag = le32_to_cpu(reparse_buf->ReparseTag);
3102 *rsp_buftype = resp_buftype[1];
3103 resp_buftype[1] = CIFS_NO_BUFFER;
3107 SMB2_open_free(&rqst[0]);
3108 SMB2_ioctl_free(&rqst[1]);
3109 SMB2_close_free(&rqst[2]);
3110 free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base);
3111 free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base);
3112 free_rsp_buf(resp_buftype[2], rsp_iov[2].iov_base);
3119 static struct cifs_ntsd *
3120 get_smb2_acl_by_fid(struct cifs_sb_info *cifs_sb,
3121 const struct cifs_fid *cifsfid, u32 *pacllen, u32 info)
3123 struct cifs_ntsd *pntsd = NULL;
3125 int rc = -EOPNOTSUPP;
3126 struct tcon_link *tlink = cifs_sb_tlink(cifs_sb);
3129 return ERR_CAST(tlink);
3132 cifs_dbg(FYI, "trying to get acl\n");
3134 rc = SMB2_query_acl(xid, tlink_tcon(tlink), cifsfid->persistent_fid,
3135 cifsfid->volatile_fid, (void **)&pntsd, pacllen,
3139 cifs_put_tlink(tlink);
3141 cifs_dbg(FYI, "%s: rc = %d ACL len %d\n", __func__, rc, *pacllen);
3148 static struct cifs_ntsd *
3149 get_smb2_acl_by_path(struct cifs_sb_info *cifs_sb,
3150 const char *path, u32 *pacllen, u32 info)
3152 struct cifs_ntsd *pntsd = NULL;
3153 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
3156 struct cifs_tcon *tcon;
3157 struct tcon_link *tlink = cifs_sb_tlink(cifs_sb);
3158 struct cifs_fid fid;
3159 struct cifs_open_parms oparms;
3162 cifs_dbg(FYI, "get smb3 acl for path %s\n", path);
3164 return ERR_CAST(tlink);
3166 tcon = tlink_tcon(tlink);
3169 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
3176 oparms = (struct cifs_open_parms) {
3179 .desired_access = READ_CONTROL,
3180 .disposition = FILE_OPEN,
3182 * When querying an ACL, even if the file is a symlink
3183 * we want to open the source not the target, and so
3184 * the protocol requires that the client specify this
3185 * flag when opening a reparse point
3187 .create_options = cifs_create_options(cifs_sb, 0) |
3192 if (info & SACL_SECINFO)
3193 oparms.desired_access |= SYSTEM_SECURITY;
3195 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL, NULL,
3199 rc = SMB2_query_acl(xid, tlink_tcon(tlink), fid.persistent_fid,
3200 fid.volatile_fid, (void **)&pntsd, pacllen,
3202 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
3205 cifs_put_tlink(tlink);
3208 cifs_dbg(FYI, "%s: rc = %d ACL len %d\n", __func__, rc, *pacllen);
3215 set_smb2_acl(struct cifs_ntsd *pnntsd, __u32 acllen,
3216 struct inode *inode, const char *path, int aclflag)
3218 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
3220 int rc, access_flags = 0;
3221 struct cifs_tcon *tcon;
3222 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
3223 struct tcon_link *tlink = cifs_sb_tlink(cifs_sb);
3224 struct cifs_fid fid;
3225 struct cifs_open_parms oparms;
3228 cifs_dbg(FYI, "set smb3 acl for path %s\n", path);
3230 return PTR_ERR(tlink);
3232 tcon = tlink_tcon(tlink);
3235 if (aclflag & CIFS_ACL_OWNER || aclflag & CIFS_ACL_GROUP)
3236 access_flags |= WRITE_OWNER;
3237 if (aclflag & CIFS_ACL_SACL)
3238 access_flags |= SYSTEM_SECURITY;
3239 if (aclflag & CIFS_ACL_DACL)
3240 access_flags |= WRITE_DAC;
3242 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
3249 oparms = (struct cifs_open_parms) {
3251 .desired_access = access_flags,
3252 .create_options = cifs_create_options(cifs_sb, 0),
3253 .disposition = FILE_OPEN,
3258 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL,
3262 rc = SMB2_set_acl(xid, tlink_tcon(tlink), fid.persistent_fid,
3263 fid.volatile_fid, pnntsd, acllen, aclflag);
3264 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
3267 cifs_put_tlink(tlink);
3272 /* Retrieve an ACL from the server */
3273 static struct cifs_ntsd *
3274 get_smb2_acl(struct cifs_sb_info *cifs_sb,
3275 struct inode *inode, const char *path,
3276 u32 *pacllen, u32 info)
3278 struct cifs_ntsd *pntsd = NULL;
3279 struct cifsFileInfo *open_file = NULL;
3281 if (inode && !(info & SACL_SECINFO))
3282 open_file = find_readable_file(CIFS_I(inode), true);
3283 if (!open_file || (info & SACL_SECINFO))
3284 return get_smb2_acl_by_path(cifs_sb, path, pacllen, info);
3286 pntsd = get_smb2_acl_by_fid(cifs_sb, &open_file->fid, pacllen, info);
3287 cifsFileInfo_put(open_file);
3291 static long smb3_zero_data(struct file *file, struct cifs_tcon *tcon,
3292 loff_t offset, loff_t len, unsigned int xid)
3294 struct cifsFileInfo *cfile = file->private_data;
3295 struct file_zero_data_information fsctl_buf;
3297 cifs_dbg(FYI, "Offset %lld len %lld\n", offset, len);
3299 fsctl_buf.FileOffset = cpu_to_le64(offset);
3300 fsctl_buf.BeyondFinalZero = cpu_to_le64(offset + len);
3302 return SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
3303 cfile->fid.volatile_fid, FSCTL_SET_ZERO_DATA,
3305 sizeof(struct file_zero_data_information),
3309 static long smb3_zero_range(struct file *file, struct cifs_tcon *tcon,
3310 loff_t offset, loff_t len, bool keep_size)
3312 struct cifs_ses *ses = tcon->ses;
3313 struct inode *inode = file_inode(file);
3314 struct cifsInodeInfo *cifsi = CIFS_I(inode);
3315 struct cifsFileInfo *cfile = file->private_data;
3316 unsigned long long new_size;
3323 trace_smb3_zero_enter(xid, cfile->fid.persistent_fid, tcon->tid,
3324 ses->Suid, offset, len);
3327 filemap_invalidate_lock(inode->i_mapping);
3330 * We zero the range through ioctl, so we need remove the page caches
3331 * first, otherwise the data may be inconsistent with the server.
3333 truncate_pagecache_range(inode, offset, offset + len - 1);
3335 /* if file not oplocked can't be sure whether asking to extend size */
3337 if (keep_size == false && !CIFS_CACHE_READ(cifsi))
3338 goto zero_range_exit;
3340 rc = smb3_zero_data(file, tcon, offset, len, xid);
3342 goto zero_range_exit;
3345 * do we also need to change the size of the file?
3347 new_size = offset + len;
3348 if (keep_size == false && (unsigned long long)i_size_read(inode) < new_size) {
3349 eof = cpu_to_le64(new_size);
3350 rc = SMB2_set_eof(xid, tcon, cfile->fid.persistent_fid,
3351 cfile->fid.volatile_fid, cfile->pid, &eof);
3353 truncate_setsize(inode, new_size);
3354 fscache_resize_cookie(cifs_inode_cookie(inode), new_size);
3359 filemap_invalidate_unlock(inode->i_mapping);
3360 inode_unlock(inode);
3363 trace_smb3_zero_err(xid, cfile->fid.persistent_fid, tcon->tid,
3364 ses->Suid, offset, len, rc);
3366 trace_smb3_zero_done(xid, cfile->fid.persistent_fid, tcon->tid,
3367 ses->Suid, offset, len);
3371 static long smb3_punch_hole(struct file *file, struct cifs_tcon *tcon,
3372 loff_t offset, loff_t len)
3374 struct inode *inode = file_inode(file);
3375 struct cifsFileInfo *cfile = file->private_data;
3376 struct file_zero_data_information fsctl_buf;
3379 __u8 set_sparse = 1;
3384 /* Need to make file sparse, if not already, before freeing range. */
3385 /* Consider adding equivalent for compressed since it could also work */
3386 if (!smb2_set_sparse(xid, tcon, cfile, inode, set_sparse)) {
3391 filemap_invalidate_lock(inode->i_mapping);
3393 * We implement the punch hole through ioctl, so we need remove the page
3394 * caches first, otherwise the data may be inconsistent with the server.
3396 truncate_pagecache_range(inode, offset, offset + len - 1);
3398 cifs_dbg(FYI, "Offset %lld len %lld\n", offset, len);
3400 fsctl_buf.FileOffset = cpu_to_le64(offset);
3401 fsctl_buf.BeyondFinalZero = cpu_to_le64(offset + len);
3403 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
3404 cfile->fid.volatile_fid, FSCTL_SET_ZERO_DATA,
3406 sizeof(struct file_zero_data_information),
3407 CIFSMaxBufSize, NULL, NULL);
3408 filemap_invalidate_unlock(inode->i_mapping);
3410 inode_unlock(inode);
3415 static int smb3_simple_fallocate_write_range(unsigned int xid,
3416 struct cifs_tcon *tcon,
3417 struct cifsFileInfo *cfile,
3418 loff_t off, loff_t len,
3421 struct cifs_io_parms io_parms = {0};
3426 io_parms.netfid = cfile->fid.netfid;
3427 io_parms.pid = current->tgid;
3428 io_parms.tcon = tcon;
3429 io_parms.persistent_fid = cfile->fid.persistent_fid;
3430 io_parms.volatile_fid = cfile->fid.volatile_fid;
3433 io_parms.offset = off;
3434 io_parms.length = len;
3435 if (io_parms.length > SMB2_MAX_BUFFER_SIZE)
3436 io_parms.length = SMB2_MAX_BUFFER_SIZE;
3437 /* iov[0] is reserved for smb header */
3438 iov[1].iov_base = buf;
3439 iov[1].iov_len = io_parms.length;
3440 rc = SMB2_write(xid, &io_parms, &nbytes, iov, 1);
3452 static int smb3_simple_fallocate_range(unsigned int xid,
3453 struct cifs_tcon *tcon,
3454 struct cifsFileInfo *cfile,
3455 loff_t off, loff_t len)
3457 struct file_allocated_range_buffer in_data, *out_data = NULL, *tmp_data;
3463 in_data.file_offset = cpu_to_le64(off);
3464 in_data.length = cpu_to_le64(len);
3465 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
3466 cfile->fid.volatile_fid,
3467 FSCTL_QUERY_ALLOCATED_RANGES,
3468 (char *)&in_data, sizeof(in_data),
3469 1024 * sizeof(struct file_allocated_range_buffer),
3470 (char **)&out_data, &out_data_len);
3474 buf = kzalloc(1024 * 1024, GFP_KERNEL);
3480 tmp_data = out_data;
3483 * The rest of the region is unmapped so write it all.
3485 if (out_data_len == 0) {
3486 rc = smb3_simple_fallocate_write_range(xid, tcon,
3487 cfile, off, len, buf);
3491 if (out_data_len < sizeof(struct file_allocated_range_buffer)) {
3496 if (off < le64_to_cpu(tmp_data->file_offset)) {
3498 * We are at a hole. Write until the end of the region
3499 * or until the next allocated data,
3500 * whichever comes next.
3502 l = le64_to_cpu(tmp_data->file_offset) - off;
3505 rc = smb3_simple_fallocate_write_range(xid, tcon,
3506 cfile, off, l, buf);
3515 * We are at a section of allocated data, just skip forward
3516 * until the end of the data or the end of the region
3517 * we are supposed to fallocate, whichever comes first.
3519 l = le64_to_cpu(tmp_data->length);
3525 tmp_data = &tmp_data[1];
3526 out_data_len -= sizeof(struct file_allocated_range_buffer);
3536 static long smb3_simple_falloc(struct file *file, struct cifs_tcon *tcon,
3537 loff_t off, loff_t len, bool keep_size)
3539 struct inode *inode;
3540 struct cifsInodeInfo *cifsi;
3541 struct cifsFileInfo *cfile = file->private_data;
3542 long rc = -EOPNOTSUPP;
3548 inode = d_inode(cfile->dentry);
3549 cifsi = CIFS_I(inode);
3551 trace_smb3_falloc_enter(xid, cfile->fid.persistent_fid, tcon->tid,
3552 tcon->ses->Suid, off, len);
3553 /* if file not oplocked can't be sure whether asking to extend size */
3554 if (!CIFS_CACHE_READ(cifsi))
3555 if (keep_size == false) {
3556 trace_smb3_falloc_err(xid, cfile->fid.persistent_fid,
3557 tcon->tid, tcon->ses->Suid, off, len, rc);
3563 * Extending the file
3565 if ((keep_size == false) && i_size_read(inode) < off + len) {
3566 rc = inode_newsize_ok(inode, off + len);
3570 if (cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE)
3571 smb2_set_sparse(xid, tcon, cfile, inode, false);
3573 eof = cpu_to_le64(off + len);
3574 rc = SMB2_set_eof(xid, tcon, cfile->fid.persistent_fid,
3575 cfile->fid.volatile_fid, cfile->pid, &eof);
3577 cifsi->server_eof = off + len;
3578 cifs_setsize(inode, off + len);
3579 cifs_truncate_page(inode->i_mapping, inode->i_size);
3580 truncate_setsize(inode, off + len);
3586 * Files are non-sparse by default so falloc may be a no-op
3587 * Must check if file sparse. If not sparse, and since we are not
3588 * extending then no need to do anything since file already allocated
3590 if ((cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) == 0) {
3595 if (keep_size == true) {
3597 * We can not preallocate pages beyond the end of the file
3600 if (off >= i_size_read(inode)) {
3605 * For fallocates that are partially beyond the end of file,
3606 * clamp len so we only fallocate up to the end of file.
3608 if (off + len > i_size_read(inode)) {
3609 len = i_size_read(inode) - off;
3613 if ((keep_size == true) || (i_size_read(inode) >= off + len)) {
3615 * At this point, we are trying to fallocate an internal
3616 * regions of a sparse file. Since smb2 does not have a
3617 * fallocate command we have two otions on how to emulate this.
3618 * We can either turn the entire file to become non-sparse
3619 * which we only do if the fallocate is for virtually
3620 * the whole file, or we can overwrite the region with zeroes
3621 * using SMB2_write, which could be prohibitevly expensive
3625 * We are only trying to fallocate a small region so
3626 * just write it with zero.
3628 if (len <= 1024 * 1024) {
3629 rc = smb3_simple_fallocate_range(xid, tcon, cfile,
3635 * Check if falloc starts within first few pages of file
3636 * and ends within a few pages of the end of file to
3637 * ensure that most of file is being forced to be
3638 * fallocated now. If so then setting whole file sparse
3639 * ie potentially making a few extra pages at the beginning
3640 * or end of the file non-sparse via set_sparse is harmless.
3642 if ((off > 8192) || (off + len + 8192 < i_size_read(inode))) {
3648 smb2_set_sparse(xid, tcon, cfile, inode, false);
3653 trace_smb3_falloc_err(xid, cfile->fid.persistent_fid, tcon->tid,
3654 tcon->ses->Suid, off, len, rc);
3656 trace_smb3_falloc_done(xid, cfile->fid.persistent_fid, tcon->tid,
3657 tcon->ses->Suid, off, len);
3663 static long smb3_collapse_range(struct file *file, struct cifs_tcon *tcon,
3664 loff_t off, loff_t len)
3668 struct inode *inode = file_inode(file);
3669 struct cifsFileInfo *cfile = file->private_data;
3670 struct cifsInodeInfo *cifsi = CIFS_I(inode);
3678 old_eof = i_size_read(inode);
3679 if ((off >= old_eof) ||
3680 off + len >= old_eof) {
3685 filemap_invalidate_lock(inode->i_mapping);
3686 rc = filemap_write_and_wait_range(inode->i_mapping, off, old_eof - 1);
3690 truncate_pagecache_range(inode, off, old_eof);
3692 rc = smb2_copychunk_range(xid, cfile, cfile, off + len,
3693 old_eof - off - len, off);
3697 eof = cpu_to_le64(old_eof - len);
3698 rc = SMB2_set_eof(xid, tcon, cfile->fid.persistent_fid,
3699 cfile->fid.volatile_fid, cfile->pid, &eof);
3705 cifsi->server_eof = i_size_read(inode) - len;
3706 truncate_setsize(inode, cifsi->server_eof);
3707 fscache_resize_cookie(cifs_inode_cookie(inode), cifsi->server_eof);
3709 filemap_invalidate_unlock(inode->i_mapping);
3711 inode_unlock(inode);
3716 static long smb3_insert_range(struct file *file, struct cifs_tcon *tcon,
3717 loff_t off, loff_t len)
3721 struct cifsFileInfo *cfile = file->private_data;
3722 struct inode *inode = file_inode(file);
3724 __u64 count, old_eof;
3730 old_eof = i_size_read(inode);
3731 if (off >= old_eof) {
3736 count = old_eof - off;
3737 eof = cpu_to_le64(old_eof + len);
3739 filemap_invalidate_lock(inode->i_mapping);
3740 rc = filemap_write_and_wait_range(inode->i_mapping, off, old_eof + len - 1);
3743 truncate_pagecache_range(inode, off, old_eof);
3745 rc = SMB2_set_eof(xid, tcon, cfile->fid.persistent_fid,
3746 cfile->fid.volatile_fid, cfile->pid, &eof);
3750 truncate_setsize(inode, old_eof + len);
3751 fscache_resize_cookie(cifs_inode_cookie(inode), i_size_read(inode));
3753 rc = smb2_copychunk_range(xid, cfile, cfile, off, count, off + len);
3757 rc = smb3_zero_data(file, tcon, off, len, xid);
3763 filemap_invalidate_unlock(inode->i_mapping);
3765 inode_unlock(inode);
3770 static loff_t smb3_llseek(struct file *file, struct cifs_tcon *tcon, loff_t offset, int whence)
3772 struct cifsFileInfo *wrcfile, *cfile = file->private_data;
3773 struct cifsInodeInfo *cifsi;
3774 struct inode *inode;
3776 struct file_allocated_range_buffer in_data, *out_data = NULL;
3780 if (whence != SEEK_HOLE && whence != SEEK_DATA)
3781 return generic_file_llseek(file, offset, whence);
3783 inode = d_inode(cfile->dentry);
3784 cifsi = CIFS_I(inode);
3786 if (offset < 0 || offset >= i_size_read(inode))
3791 * We need to be sure that all dirty pages are written as they
3792 * might fill holes on the server.
3793 * Note that we also MUST flush any written pages since at least
3794 * some servers (Windows2016) will not reflect recent writes in
3795 * QUERY_ALLOCATED_RANGES until SMB2_flush is called.
3797 wrcfile = find_writable_file(cifsi, FIND_WR_ANY);
3799 filemap_write_and_wait(inode->i_mapping);
3800 smb2_flush_file(xid, tcon, &wrcfile->fid);
3801 cifsFileInfo_put(wrcfile);
3804 if (!(cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE)) {
3805 if (whence == SEEK_HOLE)
3806 offset = i_size_read(inode);
3810 in_data.file_offset = cpu_to_le64(offset);
3811 in_data.length = cpu_to_le64(i_size_read(inode));
3813 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
3814 cfile->fid.volatile_fid,
3815 FSCTL_QUERY_ALLOCATED_RANGES,
3816 (char *)&in_data, sizeof(in_data),
3817 sizeof(struct file_allocated_range_buffer),
3818 (char **)&out_data, &out_data_len);
3824 if (whence == SEEK_HOLE && out_data_len == 0)
3827 if (whence == SEEK_DATA && out_data_len == 0) {
3832 if (out_data_len < sizeof(struct file_allocated_range_buffer)) {
3836 if (whence == SEEK_DATA) {
3837 offset = le64_to_cpu(out_data->file_offset);
3840 if (offset < le64_to_cpu(out_data->file_offset))
3843 offset = le64_to_cpu(out_data->file_offset) + le64_to_cpu(out_data->length);
3849 return vfs_setpos(file, offset, inode->i_sb->s_maxbytes);
3854 static int smb3_fiemap(struct cifs_tcon *tcon,
3855 struct cifsFileInfo *cfile,
3856 struct fiemap_extent_info *fei, u64 start, u64 len)
3859 struct file_allocated_range_buffer in_data, *out_data;
3861 int i, num, rc, flags, last_blob;
3864 rc = fiemap_prep(d_inode(cfile->dentry), fei, start, &len, 0);
3870 in_data.file_offset = cpu_to_le64(start);
3871 in_data.length = cpu_to_le64(len);
3873 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
3874 cfile->fid.volatile_fid,
3875 FSCTL_QUERY_ALLOCATED_RANGES,
3876 (char *)&in_data, sizeof(in_data),
3877 1024 * sizeof(struct file_allocated_range_buffer),
3878 (char **)&out_data, &out_data_len);
3887 if (out_data_len && out_data_len < sizeof(struct file_allocated_range_buffer)) {
3891 if (out_data_len % sizeof(struct file_allocated_range_buffer)) {
3896 num = out_data_len / sizeof(struct file_allocated_range_buffer);
3897 for (i = 0; i < num; i++) {
3899 if (i == num - 1 && last_blob)
3900 flags |= FIEMAP_EXTENT_LAST;
3902 rc = fiemap_fill_next_extent(fei,
3903 le64_to_cpu(out_data[i].file_offset),
3904 le64_to_cpu(out_data[i].file_offset),
3905 le64_to_cpu(out_data[i].length),
3916 next = le64_to_cpu(out_data[num - 1].file_offset) +
3917 le64_to_cpu(out_data[num - 1].length);
3918 len = len - (next - start);
3929 static long smb3_fallocate(struct file *file, struct cifs_tcon *tcon, int mode,
3930 loff_t off, loff_t len)
3932 /* KEEP_SIZE already checked for by do_fallocate */
3933 if (mode & FALLOC_FL_PUNCH_HOLE)
3934 return smb3_punch_hole(file, tcon, off, len);
3935 else if (mode & FALLOC_FL_ZERO_RANGE) {
3936 if (mode & FALLOC_FL_KEEP_SIZE)
3937 return smb3_zero_range(file, tcon, off, len, true);
3938 return smb3_zero_range(file, tcon, off, len, false);
3939 } else if (mode == FALLOC_FL_KEEP_SIZE)
3940 return smb3_simple_falloc(file, tcon, off, len, true);
3941 else if (mode == FALLOC_FL_COLLAPSE_RANGE)
3942 return smb3_collapse_range(file, tcon, off, len);
3943 else if (mode == FALLOC_FL_INSERT_RANGE)
3944 return smb3_insert_range(file, tcon, off, len);
3946 return smb3_simple_falloc(file, tcon, off, len, false);
3952 smb2_downgrade_oplock(struct TCP_Server_Info *server,
3953 struct cifsInodeInfo *cinode, __u32 oplock,
3954 unsigned int epoch, bool *purge_cache)
3956 server->ops->set_oplock_level(cinode, oplock, 0, NULL);
3960 smb21_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
3961 unsigned int epoch, bool *purge_cache);
3964 smb3_downgrade_oplock(struct TCP_Server_Info *server,
3965 struct cifsInodeInfo *cinode, __u32 oplock,
3966 unsigned int epoch, bool *purge_cache)
3968 unsigned int old_state = cinode->oplock;
3969 unsigned int old_epoch = cinode->epoch;
3970 unsigned int new_state;
3972 if (epoch > old_epoch) {
3973 smb21_set_oplock_level(cinode, oplock, 0, NULL);
3974 cinode->epoch = epoch;
3977 new_state = cinode->oplock;
3978 *purge_cache = false;
3980 if ((old_state & CIFS_CACHE_READ_FLG) != 0 &&
3981 (new_state & CIFS_CACHE_READ_FLG) == 0)
3982 *purge_cache = true;
3983 else if (old_state == new_state && (epoch - old_epoch > 1))
3984 *purge_cache = true;
3988 smb2_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
3989 unsigned int epoch, bool *purge_cache)
3992 cinode->lease_granted = false;
3993 if (oplock == SMB2_OPLOCK_LEVEL_NOCHANGE)
3995 if (oplock == SMB2_OPLOCK_LEVEL_BATCH) {
3996 cinode->oplock = CIFS_CACHE_RHW_FLG;
3997 cifs_dbg(FYI, "Batch Oplock granted on inode %p\n",
3998 &cinode->netfs.inode);
3999 } else if (oplock == SMB2_OPLOCK_LEVEL_EXCLUSIVE) {
4000 cinode->oplock = CIFS_CACHE_RW_FLG;
4001 cifs_dbg(FYI, "Exclusive Oplock granted on inode %p\n",
4002 &cinode->netfs.inode);
4003 } else if (oplock == SMB2_OPLOCK_LEVEL_II) {
4004 cinode->oplock = CIFS_CACHE_READ_FLG;
4005 cifs_dbg(FYI, "Level II Oplock granted on inode %p\n",
4006 &cinode->netfs.inode);
4012 smb21_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
4013 unsigned int epoch, bool *purge_cache)
4015 char message[5] = {0};
4016 unsigned int new_oplock = 0;
4019 cinode->lease_granted = true;
4020 if (oplock == SMB2_OPLOCK_LEVEL_NOCHANGE)
4023 /* Check if the server granted an oplock rather than a lease */
4024 if (oplock & SMB2_OPLOCK_LEVEL_EXCLUSIVE)
4025 return smb2_set_oplock_level(cinode, oplock, epoch,
4028 if (oplock & SMB2_LEASE_READ_CACHING_HE) {
4029 new_oplock |= CIFS_CACHE_READ_FLG;
4030 strcat(message, "R");
4032 if (oplock & SMB2_LEASE_HANDLE_CACHING_HE) {
4033 new_oplock |= CIFS_CACHE_HANDLE_FLG;
4034 strcat(message, "H");
4036 if (oplock & SMB2_LEASE_WRITE_CACHING_HE) {
4037 new_oplock |= CIFS_CACHE_WRITE_FLG;
4038 strcat(message, "W");
4041 strncpy(message, "None", sizeof(message));
4043 cinode->oplock = new_oplock;
4044 cifs_dbg(FYI, "%s Lease granted on inode %p\n", message,
4045 &cinode->netfs.inode);
4049 smb3_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
4050 unsigned int epoch, bool *purge_cache)
4052 unsigned int old_oplock = cinode->oplock;
4054 smb21_set_oplock_level(cinode, oplock, epoch, purge_cache);
4057 *purge_cache = false;
4058 if (old_oplock == CIFS_CACHE_READ_FLG) {
4059 if (cinode->oplock == CIFS_CACHE_READ_FLG &&
4060 (epoch - cinode->epoch > 0))
4061 *purge_cache = true;
4062 else if (cinode->oplock == CIFS_CACHE_RH_FLG &&
4063 (epoch - cinode->epoch > 1))
4064 *purge_cache = true;
4065 else if (cinode->oplock == CIFS_CACHE_RHW_FLG &&
4066 (epoch - cinode->epoch > 1))
4067 *purge_cache = true;
4068 else if (cinode->oplock == 0 &&
4069 (epoch - cinode->epoch > 0))
4070 *purge_cache = true;
4071 } else if (old_oplock == CIFS_CACHE_RH_FLG) {
4072 if (cinode->oplock == CIFS_CACHE_RH_FLG &&
4073 (epoch - cinode->epoch > 0))
4074 *purge_cache = true;
4075 else if (cinode->oplock == CIFS_CACHE_RHW_FLG &&
4076 (epoch - cinode->epoch > 1))
4077 *purge_cache = true;
4079 cinode->epoch = epoch;
4083 #ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY
4085 smb2_is_read_op(__u32 oplock)
4087 return oplock == SMB2_OPLOCK_LEVEL_II;
4089 #endif /* CIFS_ALLOW_INSECURE_LEGACY */
4092 smb21_is_read_op(__u32 oplock)
4094 return (oplock & SMB2_LEASE_READ_CACHING_HE) &&
4095 !(oplock & SMB2_LEASE_WRITE_CACHING_HE);
4099 map_oplock_to_lease(u8 oplock)
4101 if (oplock == SMB2_OPLOCK_LEVEL_EXCLUSIVE)
4102 return SMB2_LEASE_WRITE_CACHING_LE | SMB2_LEASE_READ_CACHING_LE;
4103 else if (oplock == SMB2_OPLOCK_LEVEL_II)
4104 return SMB2_LEASE_READ_CACHING_LE;
4105 else if (oplock == SMB2_OPLOCK_LEVEL_BATCH)
4106 return SMB2_LEASE_HANDLE_CACHING_LE | SMB2_LEASE_READ_CACHING_LE |
4107 SMB2_LEASE_WRITE_CACHING_LE;
4112 smb2_create_lease_buf(u8 *lease_key, u8 oplock)
4114 struct create_lease *buf;
4116 buf = kzalloc(sizeof(struct create_lease), GFP_KERNEL);
4120 memcpy(&buf->lcontext.LeaseKey, lease_key, SMB2_LEASE_KEY_SIZE);
4121 buf->lcontext.LeaseState = map_oplock_to_lease(oplock);
4123 buf->ccontext.DataOffset = cpu_to_le16(offsetof
4124 (struct create_lease, lcontext));
4125 buf->ccontext.DataLength = cpu_to_le32(sizeof(struct lease_context));
4126 buf->ccontext.NameOffset = cpu_to_le16(offsetof
4127 (struct create_lease, Name));
4128 buf->ccontext.NameLength = cpu_to_le16(4);
4129 /* SMB2_CREATE_REQUEST_LEASE is "RqLs" */
4138 smb3_create_lease_buf(u8 *lease_key, u8 oplock)
4140 struct create_lease_v2 *buf;
4142 buf = kzalloc(sizeof(struct create_lease_v2), GFP_KERNEL);
4146 memcpy(&buf->lcontext.LeaseKey, lease_key, SMB2_LEASE_KEY_SIZE);
4147 buf->lcontext.LeaseState = map_oplock_to_lease(oplock);
4149 buf->ccontext.DataOffset = cpu_to_le16(offsetof
4150 (struct create_lease_v2, lcontext));
4151 buf->ccontext.DataLength = cpu_to_le32(sizeof(struct lease_context_v2));
4152 buf->ccontext.NameOffset = cpu_to_le16(offsetof
4153 (struct create_lease_v2, Name));
4154 buf->ccontext.NameLength = cpu_to_le16(4);
4155 /* SMB2_CREATE_REQUEST_LEASE is "RqLs" */
4164 smb2_parse_lease_buf(void *buf, unsigned int *epoch, char *lease_key)
4166 struct create_lease *lc = (struct create_lease *)buf;
4168 *epoch = 0; /* not used */
4169 if (lc->lcontext.LeaseFlags & SMB2_LEASE_FLAG_BREAK_IN_PROGRESS_LE)
4170 return SMB2_OPLOCK_LEVEL_NOCHANGE;
4171 return le32_to_cpu(lc->lcontext.LeaseState);
4175 smb3_parse_lease_buf(void *buf, unsigned int *epoch, char *lease_key)
4177 struct create_lease_v2 *lc = (struct create_lease_v2 *)buf;
4179 *epoch = le16_to_cpu(lc->lcontext.Epoch);
4180 if (lc->lcontext.LeaseFlags & SMB2_LEASE_FLAG_BREAK_IN_PROGRESS_LE)
4181 return SMB2_OPLOCK_LEVEL_NOCHANGE;
4183 memcpy(lease_key, &lc->lcontext.LeaseKey, SMB2_LEASE_KEY_SIZE);
4184 return le32_to_cpu(lc->lcontext.LeaseState);
4188 smb2_wp_retry_size(struct inode *inode)
4190 return min_t(unsigned int, CIFS_SB(inode->i_sb)->ctx->wsize,
4191 SMB2_MAX_BUFFER_SIZE);
4195 smb2_dir_needs_close(struct cifsFileInfo *cfile)
4197 return !cfile->invalidHandle;
4201 fill_transform_hdr(struct smb2_transform_hdr *tr_hdr, unsigned int orig_len,
4202 struct smb_rqst *old_rq, __le16 cipher_type)
4204 struct smb2_hdr *shdr =
4205 (struct smb2_hdr *)old_rq->rq_iov[0].iov_base;
4207 memset(tr_hdr, 0, sizeof(struct smb2_transform_hdr));
4208 tr_hdr->ProtocolId = SMB2_TRANSFORM_PROTO_NUM;
4209 tr_hdr->OriginalMessageSize = cpu_to_le32(orig_len);
4210 tr_hdr->Flags = cpu_to_le16(0x01);
4211 if ((cipher_type == SMB2_ENCRYPTION_AES128_GCM) ||
4212 (cipher_type == SMB2_ENCRYPTION_AES256_GCM))
4213 get_random_bytes(&tr_hdr->Nonce, SMB3_AES_GCM_NONCE);
4215 get_random_bytes(&tr_hdr->Nonce, SMB3_AES_CCM_NONCE);
4216 memcpy(&tr_hdr->SessionId, &shdr->SessionId, 8);
4219 static void *smb2_aead_req_alloc(struct crypto_aead *tfm, const struct smb_rqst *rqst,
4220 int num_rqst, const u8 *sig, u8 **iv,
4221 struct aead_request **req, struct sg_table *sgt,
4222 unsigned int *num_sgs, size_t *sensitive_size)
4224 unsigned int req_size = sizeof(**req) + crypto_aead_reqsize(tfm);
4225 unsigned int iv_size = crypto_aead_ivsize(tfm);
4229 *num_sgs = cifs_get_num_sgs(rqst, num_rqst, sig);
4230 if (IS_ERR_VALUE((long)(int)*num_sgs))
4231 return ERR_PTR(*num_sgs);
4234 len += crypto_aead_alignmask(tfm) & ~(crypto_tfm_ctx_alignment() - 1);
4235 len = ALIGN(len, crypto_tfm_ctx_alignment());
4237 len = ALIGN(len, __alignof__(struct scatterlist));
4238 len += array_size(*num_sgs, sizeof(struct scatterlist));
4239 *sensitive_size = len;
4241 p = kvzalloc(len, GFP_NOFS);
4243 return ERR_PTR(-ENOMEM);
4245 *iv = (u8 *)PTR_ALIGN(p, crypto_aead_alignmask(tfm) + 1);
4246 *req = (struct aead_request *)PTR_ALIGN(*iv + iv_size,
4247 crypto_tfm_ctx_alignment());
4248 sgt->sgl = (struct scatterlist *)PTR_ALIGN((u8 *)*req + req_size,
4249 __alignof__(struct scatterlist));
4253 static void *smb2_get_aead_req(struct crypto_aead *tfm, struct smb_rqst *rqst,
4254 int num_rqst, const u8 *sig, u8 **iv,
4255 struct aead_request **req, struct scatterlist **sgl,
4256 size_t *sensitive_size)
4258 struct sg_table sgtable = {};
4259 unsigned int skip, num_sgs, i, j;
4263 p = smb2_aead_req_alloc(tfm, rqst, num_rqst, sig, iv, req, &sgtable,
4264 &num_sgs, sensitive_size);
4268 sg_init_marker(sgtable.sgl, num_sgs);
4271 * The first rqst has a transform header where the
4272 * first 20 bytes are not part of the encrypted blob.
4276 for (i = 0; i < num_rqst; i++) {
4277 struct iov_iter *iter = &rqst[i].rq_iter;
4278 size_t count = iov_iter_count(iter);
4280 for (j = 0; j < rqst[i].rq_nvec; j++) {
4281 cifs_sg_set_buf(&sgtable,
4282 rqst[i].rq_iov[j].iov_base + skip,
4283 rqst[i].rq_iov[j].iov_len - skip);
4285 /* See the above comment on the 'skip' assignment */
4288 sgtable.orig_nents = sgtable.nents;
4290 rc = extract_iter_to_sg(iter, count, &sgtable,
4291 num_sgs - sgtable.nents, 0);
4292 iov_iter_revert(iter, rc);
4293 sgtable.orig_nents = sgtable.nents;
4296 cifs_sg_set_buf(&sgtable, sig, SMB2_SIGNATURE_SIZE);
4297 sg_mark_end(&sgtable.sgl[sgtable.nents - 1]);
4303 smb2_get_enc_key(struct TCP_Server_Info *server, __u64 ses_id, int enc, u8 *key)
4305 struct TCP_Server_Info *pserver;
4306 struct cifs_ses *ses;
4309 /* If server is a channel, select the primary channel */
4310 pserver = SERVER_IS_CHAN(server) ? server->primary_server : server;
4312 spin_lock(&cifs_tcp_ses_lock);
4313 list_for_each_entry(ses, &pserver->smb_ses_list, smb_ses_list) {
4314 if (ses->Suid == ses_id) {
4315 spin_lock(&ses->ses_lock);
4316 ses_enc_key = enc ? ses->smb3encryptionkey :
4317 ses->smb3decryptionkey;
4318 memcpy(key, ses_enc_key, SMB3_ENC_DEC_KEY_SIZE);
4319 spin_unlock(&ses->ses_lock);
4320 spin_unlock(&cifs_tcp_ses_lock);
4324 spin_unlock(&cifs_tcp_ses_lock);
4326 trace_smb3_ses_not_found(ses_id);
4331 * Encrypt or decrypt @rqst message. @rqst[0] has the following format:
4332 * iov[0] - transform header (associate data),
4333 * iov[1-N] - SMB2 header and pages - data to encrypt.
4334 * On success return encrypted data in iov[1-N] and pages, leave iov[0]
4338 crypt_message(struct TCP_Server_Info *server, int num_rqst,
4339 struct smb_rqst *rqst, int enc)
4341 struct smb2_transform_hdr *tr_hdr =
4342 (struct smb2_transform_hdr *)rqst[0].rq_iov[0].iov_base;
4343 unsigned int assoc_data_len = sizeof(struct smb2_transform_hdr) - 20;
4345 struct scatterlist *sg;
4346 u8 sign[SMB2_SIGNATURE_SIZE] = {};
4347 u8 key[SMB3_ENC_DEC_KEY_SIZE];
4348 struct aead_request *req;
4350 DECLARE_CRYPTO_WAIT(wait);
4351 struct crypto_aead *tfm;
4352 unsigned int crypt_len = le32_to_cpu(tr_hdr->OriginalMessageSize);
4354 size_t sensitive_size;
4356 rc = smb2_get_enc_key(server, le64_to_cpu(tr_hdr->SessionId), enc, key);
4358 cifs_server_dbg(FYI, "%s: Could not get %scryption key. sid: 0x%llx\n", __func__,
4359 enc ? "en" : "de", le64_to_cpu(tr_hdr->SessionId));
4363 rc = smb3_crypto_aead_allocate(server);
4365 cifs_server_dbg(VFS, "%s: crypto alloc failed\n", __func__);
4369 tfm = enc ? server->secmech.enc : server->secmech.dec;
4371 if ((server->cipher_type == SMB2_ENCRYPTION_AES256_CCM) ||
4372 (server->cipher_type == SMB2_ENCRYPTION_AES256_GCM))
4373 rc = crypto_aead_setkey(tfm, key, SMB3_GCM256_CRYPTKEY_SIZE);
4375 rc = crypto_aead_setkey(tfm, key, SMB3_GCM128_CRYPTKEY_SIZE);
4378 cifs_server_dbg(VFS, "%s: Failed to set aead key %d\n", __func__, rc);
4382 rc = crypto_aead_setauthsize(tfm, SMB2_SIGNATURE_SIZE);
4384 cifs_server_dbg(VFS, "%s: Failed to set authsize %d\n", __func__, rc);
4388 creq = smb2_get_aead_req(tfm, rqst, num_rqst, sign, &iv, &req, &sg,
4391 return PTR_ERR(creq);
4394 memcpy(sign, &tr_hdr->Signature, SMB2_SIGNATURE_SIZE);
4395 crypt_len += SMB2_SIGNATURE_SIZE;
4398 if ((server->cipher_type == SMB2_ENCRYPTION_AES128_GCM) ||
4399 (server->cipher_type == SMB2_ENCRYPTION_AES256_GCM))
4400 memcpy(iv, (char *)tr_hdr->Nonce, SMB3_AES_GCM_NONCE);
4403 memcpy(iv + 1, (char *)tr_hdr->Nonce, SMB3_AES_CCM_NONCE);
4406 aead_request_set_tfm(req, tfm);
4407 aead_request_set_crypt(req, sg, sg, crypt_len, iv);
4408 aead_request_set_ad(req, assoc_data_len);
4410 aead_request_set_callback(req, CRYPTO_TFM_REQ_MAY_BACKLOG,
4411 crypto_req_done, &wait);
4413 rc = crypto_wait_req(enc ? crypto_aead_encrypt(req)
4414 : crypto_aead_decrypt(req), &wait);
4417 memcpy(&tr_hdr->Signature, sign, SMB2_SIGNATURE_SIZE);
4419 kvfree_sensitive(creq, sensitive_size);
4424 * Clear a read buffer, discarding the folios which have XA_MARK_0 set.
4426 static void cifs_clear_xarray_buffer(struct xarray *buffer)
4428 struct folio *folio;
4430 XA_STATE(xas, buffer, 0);
4433 xas_for_each_marked(&xas, folio, ULONG_MAX, XA_MARK_0) {
4441 smb3_free_compound_rqst(int num_rqst, struct smb_rqst *rqst)
4445 for (i = 0; i < num_rqst; i++)
4446 if (!xa_empty(&rqst[i].rq_buffer))
4447 cifs_clear_xarray_buffer(&rqst[i].rq_buffer);
4451 * This function will initialize new_rq and encrypt the content.
4452 * The first entry, new_rq[0], only contains a single iov which contains
4453 * a smb2_transform_hdr and is pre-allocated by the caller.
4454 * This function then populates new_rq[1+] with the content from olq_rq[0+].
4456 * The end result is an array of smb_rqst structures where the first structure
4457 * only contains a single iov for the transform header which we then can pass
4458 * to crypt_message().
4460 * new_rq[0].rq_iov[0] : smb2_transform_hdr pre-allocated by the caller
4461 * new_rq[1+].rq_iov[*] == old_rq[0+].rq_iov[*] : SMB2/3 requests
4464 smb3_init_transform_rq(struct TCP_Server_Info *server, int num_rqst,
4465 struct smb_rqst *new_rq, struct smb_rqst *old_rq)
4467 struct smb2_transform_hdr *tr_hdr = new_rq[0].rq_iov[0].iov_base;
4469 unsigned int orig_len = 0;
4473 for (i = 1; i < num_rqst; i++) {
4474 struct smb_rqst *old = &old_rq[i - 1];
4475 struct smb_rqst *new = &new_rq[i];
4476 struct xarray *buffer = &new->rq_buffer;
4477 size_t size = iov_iter_count(&old->rq_iter), seg, copied = 0;
4479 orig_len += smb_rqst_len(server, old);
4480 new->rq_iov = old->rq_iov;
4481 new->rq_nvec = old->rq_nvec;
4486 unsigned int npages = DIV_ROUND_UP(size, PAGE_SIZE);
4488 for (j = 0; j < npages; j++) {
4492 page = alloc_page(GFP_KERNEL|__GFP_HIGHMEM);
4496 o = xa_store(buffer, j, page, GFP_KERNEL);
4503 xa_set_mark(buffer, j, XA_MARK_0);
4505 seg = min_t(size_t, size - copied, PAGE_SIZE);
4506 if (copy_page_from_iter(page, 0, seg, &old->rq_iter) != seg) {
4512 iov_iter_xarray(&new->rq_iter, ITER_SOURCE,
4514 new->rq_iter_size = size;
4518 /* fill the 1st iov with a transform header */
4519 fill_transform_hdr(tr_hdr, orig_len, old_rq, server->cipher_type);
4521 rc = crypt_message(server, num_rqst, new_rq, 1);
4522 cifs_dbg(FYI, "Encrypt message returned %d\n", rc);
4529 smb3_free_compound_rqst(num_rqst - 1, &new_rq[1]);
4534 smb3_is_transform_hdr(void *buf)
4536 struct smb2_transform_hdr *trhdr = buf;
4538 return trhdr->ProtocolId == SMB2_TRANSFORM_PROTO_NUM;
4542 decrypt_raw_data(struct TCP_Server_Info *server, char *buf,
4543 unsigned int buf_data_size, struct iov_iter *iter,
4547 struct smb_rqst rqst = {NULL};
4548 size_t iter_size = 0;
4551 iov[0].iov_base = buf;
4552 iov[0].iov_len = sizeof(struct smb2_transform_hdr);
4553 iov[1].iov_base = buf + sizeof(struct smb2_transform_hdr);
4554 iov[1].iov_len = buf_data_size;
4559 rqst.rq_iter = *iter;
4560 rqst.rq_iter_size = iov_iter_count(iter);
4561 iter_size = iov_iter_count(iter);
4564 rc = crypt_message(server, 1, &rqst, 0);
4565 cifs_dbg(FYI, "Decrypt message returned %d\n", rc);
4570 memmove(buf, iov[1].iov_base, buf_data_size);
4573 server->total_read = buf_data_size + iter_size;
4579 cifs_copy_pages_to_iter(struct xarray *pages, unsigned int data_size,
4580 unsigned int skip, struct iov_iter *iter)
4583 unsigned long index;
4585 xa_for_each(pages, index, page) {
4586 size_t n, len = min_t(unsigned int, PAGE_SIZE - skip, data_size);
4588 n = copy_page_to_iter(page, skip, len, iter);
4590 cifs_dbg(VFS, "%s: something went wrong\n", __func__);
4601 handle_read_data(struct TCP_Server_Info *server, struct mid_q_entry *mid,
4602 char *buf, unsigned int buf_len, struct xarray *pages,
4603 unsigned int pages_len, bool is_offloaded)
4605 unsigned int data_offset;
4606 unsigned int data_len;
4607 unsigned int cur_off;
4608 unsigned int cur_page_idx;
4609 unsigned int pad_len;
4610 struct cifs_readdata *rdata = mid->callback_data;
4611 struct smb2_hdr *shdr = (struct smb2_hdr *)buf;
4613 bool use_rdma_mr = false;
4615 if (shdr->Command != SMB2_READ) {
4616 cifs_server_dbg(VFS, "only big read responses are supported\n");
4620 if (server->ops->is_session_expired &&
4621 server->ops->is_session_expired(buf)) {
4623 cifs_reconnect(server, true);
4627 if (server->ops->is_status_pending &&
4628 server->ops->is_status_pending(buf, server))
4631 /* set up first two iov to get credits */
4632 rdata->iov[0].iov_base = buf;
4633 rdata->iov[0].iov_len = 0;
4634 rdata->iov[1].iov_base = buf;
4635 rdata->iov[1].iov_len =
4636 min_t(unsigned int, buf_len, server->vals->read_rsp_size);
4637 cifs_dbg(FYI, "0: iov_base=%p iov_len=%zu\n",
4638 rdata->iov[0].iov_base, rdata->iov[0].iov_len);
4639 cifs_dbg(FYI, "1: iov_base=%p iov_len=%zu\n",
4640 rdata->iov[1].iov_base, rdata->iov[1].iov_len);
4642 rdata->result = server->ops->map_error(buf, true);
4643 if (rdata->result != 0) {
4644 cifs_dbg(FYI, "%s: server returned error %d\n",
4645 __func__, rdata->result);
4646 /* normal error on read response */
4648 mid->mid_state = MID_RESPONSE_RECEIVED;
4650 dequeue_mid(mid, false);
4654 data_offset = server->ops->read_data_offset(buf);
4655 #ifdef CONFIG_CIFS_SMB_DIRECT
4656 use_rdma_mr = rdata->mr;
4658 data_len = server->ops->read_data_length(buf, use_rdma_mr);
4660 if (data_offset < server->vals->read_rsp_size) {
4662 * win2k8 sometimes sends an offset of 0 when the read
4663 * is beyond the EOF. Treat it as if the data starts just after
4666 cifs_dbg(FYI, "%s: data offset (%u) inside read response header\n",
4667 __func__, data_offset);
4668 data_offset = server->vals->read_rsp_size;
4669 } else if (data_offset > MAX_CIFS_SMALL_BUFFER_SIZE) {
4670 /* data_offset is beyond the end of smallbuf */
4671 cifs_dbg(FYI, "%s: data offset (%u) beyond end of smallbuf\n",
4672 __func__, data_offset);
4673 rdata->result = -EIO;
4675 mid->mid_state = MID_RESPONSE_MALFORMED;
4677 dequeue_mid(mid, rdata->result);
4681 pad_len = data_offset - server->vals->read_rsp_size;
4683 if (buf_len <= data_offset) {
4684 /* read response payload is in pages */
4685 cur_page_idx = pad_len / PAGE_SIZE;
4686 cur_off = pad_len % PAGE_SIZE;
4688 if (cur_page_idx != 0) {
4689 /* data offset is beyond the 1st page of response */
4690 cifs_dbg(FYI, "%s: data offset (%u) beyond 1st page of response\n",
4691 __func__, data_offset);
4692 rdata->result = -EIO;
4694 mid->mid_state = MID_RESPONSE_MALFORMED;
4696 dequeue_mid(mid, rdata->result);
4700 if (data_len > pages_len - pad_len) {
4701 /* data_len is corrupt -- discard frame */
4702 rdata->result = -EIO;
4704 mid->mid_state = MID_RESPONSE_MALFORMED;
4706 dequeue_mid(mid, rdata->result);
4710 /* Copy the data to the output I/O iterator. */
4711 rdata->result = cifs_copy_pages_to_iter(pages, pages_len,
4712 cur_off, &rdata->iter);
4713 if (rdata->result != 0) {
4715 mid->mid_state = MID_RESPONSE_MALFORMED;
4717 dequeue_mid(mid, rdata->result);
4720 rdata->got_bytes = pages_len;
4722 } else if (buf_len >= data_offset + data_len) {
4723 /* read response payload is in buf */
4724 WARN_ONCE(pages && !xa_empty(pages),
4725 "read data can be either in buf or in pages");
4726 length = copy_to_iter(buf + data_offset, data_len, &rdata->iter);
4729 rdata->got_bytes = data_len;
4731 /* read response payload cannot be in both buf and pages */
4732 WARN_ONCE(1, "buf can not contain only a part of read data");
4733 rdata->result = -EIO;
4735 mid->mid_state = MID_RESPONSE_MALFORMED;
4737 dequeue_mid(mid, rdata->result);
4742 mid->mid_state = MID_RESPONSE_RECEIVED;
4744 dequeue_mid(mid, false);
4748 struct smb2_decrypt_work {
4749 struct work_struct decrypt;
4750 struct TCP_Server_Info *server;
4751 struct xarray buffer;
4757 static void smb2_decrypt_offload(struct work_struct *work)
4759 struct smb2_decrypt_work *dw = container_of(work,
4760 struct smb2_decrypt_work, decrypt);
4762 struct mid_q_entry *mid;
4763 struct iov_iter iter;
4765 iov_iter_xarray(&iter, ITER_DEST, &dw->buffer, 0, dw->len);
4766 rc = decrypt_raw_data(dw->server, dw->buf, dw->server->vals->read_rsp_size,
4769 cifs_dbg(VFS, "error decrypting rc=%d\n", rc);
4773 dw->server->lstrp = jiffies;
4774 mid = smb2_find_dequeue_mid(dw->server, dw->buf);
4776 cifs_dbg(FYI, "mid not found\n");
4778 mid->decrypted = true;
4779 rc = handle_read_data(dw->server, mid, dw->buf,
4780 dw->server->vals->read_rsp_size,
4781 &dw->buffer, dw->len,
4784 #ifdef CONFIG_CIFS_STATS2
4785 mid->when_received = jiffies;
4787 if (dw->server->ops->is_network_name_deleted)
4788 dw->server->ops->is_network_name_deleted(dw->buf,
4793 spin_lock(&dw->server->srv_lock);
4794 if (dw->server->tcpStatus == CifsNeedReconnect) {
4795 spin_lock(&dw->server->mid_lock);
4796 mid->mid_state = MID_RETRY_NEEDED;
4797 spin_unlock(&dw->server->mid_lock);
4798 spin_unlock(&dw->server->srv_lock);
4801 spin_lock(&dw->server->mid_lock);
4802 mid->mid_state = MID_REQUEST_SUBMITTED;
4803 mid->mid_flags &= ~(MID_DELETED);
4804 list_add_tail(&mid->qhead,
4805 &dw->server->pending_mid_q);
4806 spin_unlock(&dw->server->mid_lock);
4807 spin_unlock(&dw->server->srv_lock);
4814 cifs_clear_xarray_buffer(&dw->buffer);
4815 cifs_small_buf_release(dw->buf);
4821 receive_encrypted_read(struct TCP_Server_Info *server, struct mid_q_entry **mid,
4825 char *buf = server->smallbuf;
4826 struct smb2_transform_hdr *tr_hdr = (struct smb2_transform_hdr *)buf;
4827 struct iov_iter iter;
4828 unsigned int len, npages;
4829 unsigned int buflen = server->pdu_size;
4832 struct smb2_decrypt_work *dw;
4834 dw = kzalloc(sizeof(struct smb2_decrypt_work), GFP_KERNEL);
4837 xa_init(&dw->buffer);
4838 INIT_WORK(&dw->decrypt, smb2_decrypt_offload);
4839 dw->server = server;
4842 len = min_t(unsigned int, buflen, server->vals->read_rsp_size +
4843 sizeof(struct smb2_transform_hdr)) - HEADER_SIZE(server) + 1;
4845 rc = cifs_read_from_socket(server, buf + HEADER_SIZE(server) - 1, len);
4848 server->total_read += rc;
4850 len = le32_to_cpu(tr_hdr->OriginalMessageSize) -
4851 server->vals->read_rsp_size;
4853 npages = DIV_ROUND_UP(len, PAGE_SIZE);
4856 for (; i < npages; i++) {
4859 page = alloc_page(GFP_KERNEL|__GFP_HIGHMEM);
4863 old = xa_store(&dw->buffer, i, page, GFP_KERNEL);
4864 if (xa_is_err(old)) {
4869 xa_set_mark(&dw->buffer, i, XA_MARK_0);
4872 iov_iter_xarray(&iter, ITER_DEST, &dw->buffer, 0, npages * PAGE_SIZE);
4874 /* Read the data into the buffer and clear excess bufferage. */
4875 rc = cifs_read_iter_from_socket(server, &iter, dw->len);
4879 server->total_read += rc;
4880 if (rc < npages * PAGE_SIZE)
4881 iov_iter_zero(npages * PAGE_SIZE - rc, &iter);
4882 iov_iter_revert(&iter, npages * PAGE_SIZE);
4883 iov_iter_truncate(&iter, dw->len);
4885 rc = cifs_discard_remaining_data(server);
4890 * For large reads, offload to different thread for better performance,
4891 * use more cores decrypting which can be expensive
4894 if ((server->min_offload) && (server->in_flight > 1) &&
4895 (server->pdu_size >= server->min_offload)) {
4896 dw->buf = server->smallbuf;
4897 server->smallbuf = (char *)cifs_small_buf_get();
4899 queue_work(decrypt_wq, &dw->decrypt);
4900 *num_mids = 0; /* worker thread takes care of finding mid */
4904 rc = decrypt_raw_data(server, buf, server->vals->read_rsp_size,
4909 *mid = smb2_find_mid(server, buf);
4911 cifs_dbg(FYI, "mid not found\n");
4913 cifs_dbg(FYI, "mid found\n");
4914 (*mid)->decrypted = true;
4915 rc = handle_read_data(server, *mid, buf,
4916 server->vals->read_rsp_size,
4917 &dw->buffer, dw->len, false);
4919 if (server->ops->is_network_name_deleted) {
4920 server->ops->is_network_name_deleted(buf,
4927 cifs_clear_xarray_buffer(&dw->buffer);
4932 cifs_discard_remaining_data(server);
4937 receive_encrypted_standard(struct TCP_Server_Info *server,
4938 struct mid_q_entry **mids, char **bufs,
4942 char *buf = server->smallbuf;
4943 struct smb2_hdr *shdr;
4944 unsigned int pdu_length = server->pdu_size;
4945 unsigned int buf_size;
4946 struct mid_q_entry *mid_entry;
4948 char *next_buffer = NULL;
4952 /* switch to large buffer if too big for a small one */
4953 if (pdu_length > MAX_CIFS_SMALL_BUFFER_SIZE) {
4954 server->large_buf = true;
4955 memcpy(server->bigbuf, buf, server->total_read);
4956 buf = server->bigbuf;
4959 /* now read the rest */
4960 length = cifs_read_from_socket(server, buf + HEADER_SIZE(server) - 1,
4961 pdu_length - HEADER_SIZE(server) + 1);
4964 server->total_read += length;
4966 buf_size = pdu_length - sizeof(struct smb2_transform_hdr);
4967 length = decrypt_raw_data(server, buf, buf_size, NULL, false);
4971 next_is_large = server->large_buf;
4973 shdr = (struct smb2_hdr *)buf;
4974 if (shdr->NextCommand) {
4976 next_buffer = (char *)cifs_buf_get();
4978 next_buffer = (char *)cifs_small_buf_get();
4980 buf + le32_to_cpu(shdr->NextCommand),
4981 pdu_length - le32_to_cpu(shdr->NextCommand));
4984 mid_entry = smb2_find_mid(server, buf);
4985 if (mid_entry == NULL)
4986 cifs_dbg(FYI, "mid not found\n");
4988 cifs_dbg(FYI, "mid found\n");
4989 mid_entry->decrypted = true;
4990 mid_entry->resp_buf_size = server->pdu_size;
4993 if (*num_mids >= MAX_COMPOUND) {
4994 cifs_server_dbg(VFS, "too many PDUs in compound\n");
4997 bufs[*num_mids] = buf;
4998 mids[(*num_mids)++] = mid_entry;
5000 if (mid_entry && mid_entry->handle)
5001 ret = mid_entry->handle(server, mid_entry);
5003 ret = cifs_handle_standard(server, mid_entry);
5005 if (ret == 0 && shdr->NextCommand) {
5006 pdu_length -= le32_to_cpu(shdr->NextCommand);
5007 server->large_buf = next_is_large;
5009 server->bigbuf = buf = next_buffer;
5011 server->smallbuf = buf = next_buffer;
5013 } else if (ret != 0) {
5015 * ret != 0 here means that we didn't get to handle_mid() thus
5016 * server->smallbuf and server->bigbuf are still valid. We need
5017 * to free next_buffer because it is not going to be used
5021 free_rsp_buf(CIFS_LARGE_BUFFER, next_buffer);
5023 free_rsp_buf(CIFS_SMALL_BUFFER, next_buffer);
5030 smb3_receive_transform(struct TCP_Server_Info *server,
5031 struct mid_q_entry **mids, char **bufs, int *num_mids)
5033 char *buf = server->smallbuf;
5034 unsigned int pdu_length = server->pdu_size;
5035 struct smb2_transform_hdr *tr_hdr = (struct smb2_transform_hdr *)buf;
5036 unsigned int orig_len = le32_to_cpu(tr_hdr->OriginalMessageSize);
5038 if (pdu_length < sizeof(struct smb2_transform_hdr) +
5039 sizeof(struct smb2_hdr)) {
5040 cifs_server_dbg(VFS, "Transform message is too small (%u)\n",
5042 cifs_reconnect(server, true);
5043 return -ECONNABORTED;
5046 if (pdu_length < orig_len + sizeof(struct smb2_transform_hdr)) {
5047 cifs_server_dbg(VFS, "Transform message is broken\n");
5048 cifs_reconnect(server, true);
5049 return -ECONNABORTED;
5052 /* TODO: add support for compounds containing READ. */
5053 if (pdu_length > CIFSMaxBufSize + MAX_HEADER_SIZE(server)) {
5054 return receive_encrypted_read(server, &mids[0], num_mids);
5057 return receive_encrypted_standard(server, mids, bufs, num_mids);
5061 smb3_handle_read_data(struct TCP_Server_Info *server, struct mid_q_entry *mid)
5063 char *buf = server->large_buf ? server->bigbuf : server->smallbuf;
5065 return handle_read_data(server, mid, buf, server->pdu_size,
5070 smb2_next_header(char *buf)
5072 struct smb2_hdr *hdr = (struct smb2_hdr *)buf;
5073 struct smb2_transform_hdr *t_hdr = (struct smb2_transform_hdr *)buf;
5075 if (hdr->ProtocolId == SMB2_TRANSFORM_PROTO_NUM)
5076 return sizeof(struct smb2_transform_hdr) +
5077 le32_to_cpu(t_hdr->OriginalMessageSize);
5079 return le32_to_cpu(hdr->NextCommand);
5082 int cifs_sfu_make_node(unsigned int xid, struct inode *inode,
5083 struct dentry *dentry, struct cifs_tcon *tcon,
5084 const char *full_path, umode_t mode, dev_t dev)
5086 struct cifs_open_info_data buf = {};
5087 struct TCP_Server_Info *server = tcon->ses->server;
5088 struct cifs_open_parms oparms;
5089 struct cifs_io_parms io_parms = {};
5090 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
5091 struct cifs_fid fid;
5092 unsigned int bytes_written;
5093 struct win_dev *pdev;
5095 __u32 oplock = server->oplocks ? REQ_OPLOCK : 0;
5098 if (!S_ISCHR(mode) && !S_ISBLK(mode) && !S_ISFIFO(mode))
5101 oparms = (struct cifs_open_parms) {
5104 .desired_access = GENERIC_WRITE,
5105 .create_options = cifs_create_options(cifs_sb, CREATE_NOT_DIR |
5106 CREATE_OPTION_SPECIAL),
5107 .disposition = FILE_CREATE,
5112 rc = server->ops->open(xid, &oparms, &oplock, &buf);
5117 * BB Do not bother to decode buf since no local inode yet to put
5118 * timestamps in, but we can reuse it safely.
5120 pdev = (struct win_dev *)&buf.fi;
5121 io_parms.pid = current->tgid;
5122 io_parms.tcon = tcon;
5123 io_parms.length = sizeof(*pdev);
5124 iov[1].iov_base = pdev;
5125 iov[1].iov_len = sizeof(*pdev);
5126 if (S_ISCHR(mode)) {
5127 memcpy(pdev->type, "IntxCHR", 8);
5128 pdev->major = cpu_to_le64(MAJOR(dev));
5129 pdev->minor = cpu_to_le64(MINOR(dev));
5130 } else if (S_ISBLK(mode)) {
5131 memcpy(pdev->type, "IntxBLK", 8);
5132 pdev->major = cpu_to_le64(MAJOR(dev));
5133 pdev->minor = cpu_to_le64(MINOR(dev));
5134 } else if (S_ISFIFO(mode)) {
5135 memcpy(pdev->type, "LnxFIFO", 8);
5138 rc = server->ops->sync_write(xid, &fid, &io_parms,
5139 &bytes_written, iov, 1);
5140 server->ops->close(xid, tcon, &fid);
5142 /* FIXME: add code here to set EAs */
5143 cifs_free_open_info(&buf);
5147 static int smb2_make_node(unsigned int xid, struct inode *inode,
5148 struct dentry *dentry, struct cifs_tcon *tcon,
5149 const char *full_path, umode_t mode, dev_t dev)
5151 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
5154 * Check if mounted with mount parm 'sfu' mount parm.
5155 * SFU emulation should work with all servers, but only
5156 * supports block and char device (no socket & fifo),
5157 * and was used by default in earlier versions of Windows
5159 if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL))
5162 * TODO: Add ability to create instead via reparse point. Windows (e.g.
5163 * their current NFS server) uses this approach to expose special files
5164 * over SMB2/SMB3 and Samba will do this with SMB3.1.1 POSIX Extensions
5166 return cifs_sfu_make_node(xid, inode, dentry, tcon,
5167 full_path, mode, dev);
5170 #ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY
5171 struct smb_version_operations smb20_operations = {
5172 .compare_fids = smb2_compare_fids,
5173 .setup_request = smb2_setup_request,
5174 .setup_async_request = smb2_setup_async_request,
5175 .check_receive = smb2_check_receive,
5176 .add_credits = smb2_add_credits,
5177 .set_credits = smb2_set_credits,
5178 .get_credits_field = smb2_get_credits_field,
5179 .get_credits = smb2_get_credits,
5180 .wait_mtu_credits = cifs_wait_mtu_credits,
5181 .get_next_mid = smb2_get_next_mid,
5182 .revert_current_mid = smb2_revert_current_mid,
5183 .read_data_offset = smb2_read_data_offset,
5184 .read_data_length = smb2_read_data_length,
5185 .map_error = map_smb2_to_linux_error,
5186 .find_mid = smb2_find_mid,
5187 .check_message = smb2_check_message,
5188 .dump_detail = smb2_dump_detail,
5189 .clear_stats = smb2_clear_stats,
5190 .print_stats = smb2_print_stats,
5191 .is_oplock_break = smb2_is_valid_oplock_break,
5192 .handle_cancelled_mid = smb2_handle_cancelled_mid,
5193 .downgrade_oplock = smb2_downgrade_oplock,
5194 .need_neg = smb2_need_neg,
5195 .negotiate = smb2_negotiate,
5196 .negotiate_wsize = smb2_negotiate_wsize,
5197 .negotiate_rsize = smb2_negotiate_rsize,
5198 .sess_setup = SMB2_sess_setup,
5199 .logoff = SMB2_logoff,
5200 .tree_connect = SMB2_tcon,
5201 .tree_disconnect = SMB2_tdis,
5202 .qfs_tcon = smb2_qfs_tcon,
5203 .is_path_accessible = smb2_is_path_accessible,
5204 .can_echo = smb2_can_echo,
5206 .query_path_info = smb2_query_path_info,
5207 .query_reparse_point = smb2_query_reparse_point,
5208 .get_srv_inum = smb2_get_srv_inum,
5209 .query_file_info = smb2_query_file_info,
5210 .set_path_size = smb2_set_path_size,
5211 .set_file_size = smb2_set_file_size,
5212 .set_file_info = smb2_set_file_info,
5213 .set_compression = smb2_set_compression,
5214 .mkdir = smb2_mkdir,
5215 .mkdir_setinfo = smb2_mkdir_setinfo,
5216 .rmdir = smb2_rmdir,
5217 .unlink = smb2_unlink,
5218 .rename = smb2_rename_path,
5219 .create_hardlink = smb2_create_hardlink,
5220 .parse_reparse_point = smb2_parse_reparse_point,
5221 .query_mf_symlink = smb3_query_mf_symlink,
5222 .create_mf_symlink = smb3_create_mf_symlink,
5223 .open = smb2_open_file,
5224 .set_fid = smb2_set_fid,
5225 .close = smb2_close_file,
5226 .flush = smb2_flush_file,
5227 .async_readv = smb2_async_readv,
5228 .async_writev = smb2_async_writev,
5229 .sync_read = smb2_sync_read,
5230 .sync_write = smb2_sync_write,
5231 .query_dir_first = smb2_query_dir_first,
5232 .query_dir_next = smb2_query_dir_next,
5233 .close_dir = smb2_close_dir,
5234 .calc_smb_size = smb2_calc_size,
5235 .is_status_pending = smb2_is_status_pending,
5236 .is_session_expired = smb2_is_session_expired,
5237 .oplock_response = smb2_oplock_response,
5238 .queryfs = smb2_queryfs,
5239 .mand_lock = smb2_mand_lock,
5240 .mand_unlock_range = smb2_unlock_range,
5241 .push_mand_locks = smb2_push_mandatory_locks,
5242 .get_lease_key = smb2_get_lease_key,
5243 .set_lease_key = smb2_set_lease_key,
5244 .new_lease_key = smb2_new_lease_key,
5245 .calc_signature = smb2_calc_signature,
5246 .is_read_op = smb2_is_read_op,
5247 .set_oplock_level = smb2_set_oplock_level,
5248 .create_lease_buf = smb2_create_lease_buf,
5249 .parse_lease_buf = smb2_parse_lease_buf,
5250 .copychunk_range = smb2_copychunk_range,
5251 .wp_retry_size = smb2_wp_retry_size,
5252 .dir_needs_close = smb2_dir_needs_close,
5253 .get_dfs_refer = smb2_get_dfs_refer,
5254 .select_sectype = smb2_select_sectype,
5255 #ifdef CONFIG_CIFS_XATTR
5256 .query_all_EAs = smb2_query_eas,
5257 .set_EA = smb2_set_ea,
5258 #endif /* CIFS_XATTR */
5259 .get_acl = get_smb2_acl,
5260 .get_acl_by_fid = get_smb2_acl_by_fid,
5261 .set_acl = set_smb2_acl,
5262 .next_header = smb2_next_header,
5263 .ioctl_query_info = smb2_ioctl_query_info,
5264 .make_node = smb2_make_node,
5265 .fiemap = smb3_fiemap,
5266 .llseek = smb3_llseek,
5267 .is_status_io_timeout = smb2_is_status_io_timeout,
5268 .is_network_name_deleted = smb2_is_network_name_deleted,
5270 #endif /* CIFS_ALLOW_INSECURE_LEGACY */
5272 struct smb_version_operations smb21_operations = {
5273 .compare_fids = smb2_compare_fids,
5274 .setup_request = smb2_setup_request,
5275 .setup_async_request = smb2_setup_async_request,
5276 .check_receive = smb2_check_receive,
5277 .add_credits = smb2_add_credits,
5278 .set_credits = smb2_set_credits,
5279 .get_credits_field = smb2_get_credits_field,
5280 .get_credits = smb2_get_credits,
5281 .wait_mtu_credits = smb2_wait_mtu_credits,
5282 .adjust_credits = smb2_adjust_credits,
5283 .get_next_mid = smb2_get_next_mid,
5284 .revert_current_mid = smb2_revert_current_mid,
5285 .read_data_offset = smb2_read_data_offset,
5286 .read_data_length = smb2_read_data_length,
5287 .map_error = map_smb2_to_linux_error,
5288 .find_mid = smb2_find_mid,
5289 .check_message = smb2_check_message,
5290 .dump_detail = smb2_dump_detail,
5291 .clear_stats = smb2_clear_stats,
5292 .print_stats = smb2_print_stats,
5293 .is_oplock_break = smb2_is_valid_oplock_break,
5294 .handle_cancelled_mid = smb2_handle_cancelled_mid,
5295 .downgrade_oplock = smb2_downgrade_oplock,
5296 .need_neg = smb2_need_neg,
5297 .negotiate = smb2_negotiate,
5298 .negotiate_wsize = smb2_negotiate_wsize,
5299 .negotiate_rsize = smb2_negotiate_rsize,
5300 .sess_setup = SMB2_sess_setup,
5301 .logoff = SMB2_logoff,
5302 .tree_connect = SMB2_tcon,
5303 .tree_disconnect = SMB2_tdis,
5304 .qfs_tcon = smb2_qfs_tcon,
5305 .is_path_accessible = smb2_is_path_accessible,
5306 .can_echo = smb2_can_echo,
5308 .query_path_info = smb2_query_path_info,
5309 .query_reparse_point = smb2_query_reparse_point,
5310 .get_srv_inum = smb2_get_srv_inum,
5311 .query_file_info = smb2_query_file_info,
5312 .set_path_size = smb2_set_path_size,
5313 .set_file_size = smb2_set_file_size,
5314 .set_file_info = smb2_set_file_info,
5315 .set_compression = smb2_set_compression,
5316 .mkdir = smb2_mkdir,
5317 .mkdir_setinfo = smb2_mkdir_setinfo,
5318 .rmdir = smb2_rmdir,
5319 .unlink = smb2_unlink,
5320 .rename = smb2_rename_path,
5321 .create_hardlink = smb2_create_hardlink,
5322 .parse_reparse_point = smb2_parse_reparse_point,
5323 .query_mf_symlink = smb3_query_mf_symlink,
5324 .create_mf_symlink = smb3_create_mf_symlink,
5325 .open = smb2_open_file,
5326 .set_fid = smb2_set_fid,
5327 .close = smb2_close_file,
5328 .flush = smb2_flush_file,
5329 .async_readv = smb2_async_readv,
5330 .async_writev = smb2_async_writev,
5331 .sync_read = smb2_sync_read,
5332 .sync_write = smb2_sync_write,
5333 .query_dir_first = smb2_query_dir_first,
5334 .query_dir_next = smb2_query_dir_next,
5335 .close_dir = smb2_close_dir,
5336 .calc_smb_size = smb2_calc_size,
5337 .is_status_pending = smb2_is_status_pending,
5338 .is_session_expired = smb2_is_session_expired,
5339 .oplock_response = smb2_oplock_response,
5340 .queryfs = smb2_queryfs,
5341 .mand_lock = smb2_mand_lock,
5342 .mand_unlock_range = smb2_unlock_range,
5343 .push_mand_locks = smb2_push_mandatory_locks,
5344 .get_lease_key = smb2_get_lease_key,
5345 .set_lease_key = smb2_set_lease_key,
5346 .new_lease_key = smb2_new_lease_key,
5347 .calc_signature = smb2_calc_signature,
5348 .is_read_op = smb21_is_read_op,
5349 .set_oplock_level = smb21_set_oplock_level,
5350 .create_lease_buf = smb2_create_lease_buf,
5351 .parse_lease_buf = smb2_parse_lease_buf,
5352 .copychunk_range = smb2_copychunk_range,
5353 .wp_retry_size = smb2_wp_retry_size,
5354 .dir_needs_close = smb2_dir_needs_close,
5355 .enum_snapshots = smb3_enum_snapshots,
5356 .notify = smb3_notify,
5357 .get_dfs_refer = smb2_get_dfs_refer,
5358 .select_sectype = smb2_select_sectype,
5359 #ifdef CONFIG_CIFS_XATTR
5360 .query_all_EAs = smb2_query_eas,
5361 .set_EA = smb2_set_ea,
5362 #endif /* CIFS_XATTR */
5363 .get_acl = get_smb2_acl,
5364 .get_acl_by_fid = get_smb2_acl_by_fid,
5365 .set_acl = set_smb2_acl,
5366 .next_header = smb2_next_header,
5367 .ioctl_query_info = smb2_ioctl_query_info,
5368 .make_node = smb2_make_node,
5369 .fiemap = smb3_fiemap,
5370 .llseek = smb3_llseek,
5371 .is_status_io_timeout = smb2_is_status_io_timeout,
5372 .is_network_name_deleted = smb2_is_network_name_deleted,
5375 struct smb_version_operations smb30_operations = {
5376 .compare_fids = smb2_compare_fids,
5377 .setup_request = smb2_setup_request,
5378 .setup_async_request = smb2_setup_async_request,
5379 .check_receive = smb2_check_receive,
5380 .add_credits = smb2_add_credits,
5381 .set_credits = smb2_set_credits,
5382 .get_credits_field = smb2_get_credits_field,
5383 .get_credits = smb2_get_credits,
5384 .wait_mtu_credits = smb2_wait_mtu_credits,
5385 .adjust_credits = smb2_adjust_credits,
5386 .get_next_mid = smb2_get_next_mid,
5387 .revert_current_mid = smb2_revert_current_mid,
5388 .read_data_offset = smb2_read_data_offset,
5389 .read_data_length = smb2_read_data_length,
5390 .map_error = map_smb2_to_linux_error,
5391 .find_mid = smb2_find_mid,
5392 .check_message = smb2_check_message,
5393 .dump_detail = smb2_dump_detail,
5394 .clear_stats = smb2_clear_stats,
5395 .print_stats = smb2_print_stats,
5396 .dump_share_caps = smb2_dump_share_caps,
5397 .is_oplock_break = smb2_is_valid_oplock_break,
5398 .handle_cancelled_mid = smb2_handle_cancelled_mid,
5399 .downgrade_oplock = smb3_downgrade_oplock,
5400 .need_neg = smb2_need_neg,
5401 .negotiate = smb2_negotiate,
5402 .negotiate_wsize = smb3_negotiate_wsize,
5403 .negotiate_rsize = smb3_negotiate_rsize,
5404 .sess_setup = SMB2_sess_setup,
5405 .logoff = SMB2_logoff,
5406 .tree_connect = SMB2_tcon,
5407 .tree_disconnect = SMB2_tdis,
5408 .qfs_tcon = smb3_qfs_tcon,
5409 .is_path_accessible = smb2_is_path_accessible,
5410 .can_echo = smb2_can_echo,
5412 .query_path_info = smb2_query_path_info,
5413 /* WSL tags introduced long after smb2.1, enable for SMB3, 3.11 only */
5414 .query_reparse_point = smb2_query_reparse_point,
5415 .get_srv_inum = smb2_get_srv_inum,
5416 .query_file_info = smb2_query_file_info,
5417 .set_path_size = smb2_set_path_size,
5418 .set_file_size = smb2_set_file_size,
5419 .set_file_info = smb2_set_file_info,
5420 .set_compression = smb2_set_compression,
5421 .mkdir = smb2_mkdir,
5422 .mkdir_setinfo = smb2_mkdir_setinfo,
5423 .rmdir = smb2_rmdir,
5424 .unlink = smb2_unlink,
5425 .rename = smb2_rename_path,
5426 .create_hardlink = smb2_create_hardlink,
5427 .parse_reparse_point = smb2_parse_reparse_point,
5428 .query_mf_symlink = smb3_query_mf_symlink,
5429 .create_mf_symlink = smb3_create_mf_symlink,
5430 .open = smb2_open_file,
5431 .set_fid = smb2_set_fid,
5432 .close = smb2_close_file,
5433 .close_getattr = smb2_close_getattr,
5434 .flush = smb2_flush_file,
5435 .async_readv = smb2_async_readv,
5436 .async_writev = smb2_async_writev,
5437 .sync_read = smb2_sync_read,
5438 .sync_write = smb2_sync_write,
5439 .query_dir_first = smb2_query_dir_first,
5440 .query_dir_next = smb2_query_dir_next,
5441 .close_dir = smb2_close_dir,
5442 .calc_smb_size = smb2_calc_size,
5443 .is_status_pending = smb2_is_status_pending,
5444 .is_session_expired = smb2_is_session_expired,
5445 .oplock_response = smb2_oplock_response,
5446 .queryfs = smb2_queryfs,
5447 .mand_lock = smb2_mand_lock,
5448 .mand_unlock_range = smb2_unlock_range,
5449 .push_mand_locks = smb2_push_mandatory_locks,
5450 .get_lease_key = smb2_get_lease_key,
5451 .set_lease_key = smb2_set_lease_key,
5452 .new_lease_key = smb2_new_lease_key,
5453 .generate_signingkey = generate_smb30signingkey,
5454 .calc_signature = smb3_calc_signature,
5455 .set_integrity = smb3_set_integrity,
5456 .is_read_op = smb21_is_read_op,
5457 .set_oplock_level = smb3_set_oplock_level,
5458 .create_lease_buf = smb3_create_lease_buf,
5459 .parse_lease_buf = smb3_parse_lease_buf,
5460 .copychunk_range = smb2_copychunk_range,
5461 .duplicate_extents = smb2_duplicate_extents,
5462 .validate_negotiate = smb3_validate_negotiate,
5463 .wp_retry_size = smb2_wp_retry_size,
5464 .dir_needs_close = smb2_dir_needs_close,
5465 .fallocate = smb3_fallocate,
5466 .enum_snapshots = smb3_enum_snapshots,
5467 .notify = smb3_notify,
5468 .init_transform_rq = smb3_init_transform_rq,
5469 .is_transform_hdr = smb3_is_transform_hdr,
5470 .receive_transform = smb3_receive_transform,
5471 .get_dfs_refer = smb2_get_dfs_refer,
5472 .select_sectype = smb2_select_sectype,
5473 #ifdef CONFIG_CIFS_XATTR
5474 .query_all_EAs = smb2_query_eas,
5475 .set_EA = smb2_set_ea,
5476 #endif /* CIFS_XATTR */
5477 .get_acl = get_smb2_acl,
5478 .get_acl_by_fid = get_smb2_acl_by_fid,
5479 .set_acl = set_smb2_acl,
5480 .next_header = smb2_next_header,
5481 .ioctl_query_info = smb2_ioctl_query_info,
5482 .make_node = smb2_make_node,
5483 .fiemap = smb3_fiemap,
5484 .llseek = smb3_llseek,
5485 .is_status_io_timeout = smb2_is_status_io_timeout,
5486 .is_network_name_deleted = smb2_is_network_name_deleted,
5489 struct smb_version_operations smb311_operations = {
5490 .compare_fids = smb2_compare_fids,
5491 .setup_request = smb2_setup_request,
5492 .setup_async_request = smb2_setup_async_request,
5493 .check_receive = smb2_check_receive,
5494 .add_credits = smb2_add_credits,
5495 .set_credits = smb2_set_credits,
5496 .get_credits_field = smb2_get_credits_field,
5497 .get_credits = smb2_get_credits,
5498 .wait_mtu_credits = smb2_wait_mtu_credits,
5499 .adjust_credits = smb2_adjust_credits,
5500 .get_next_mid = smb2_get_next_mid,
5501 .revert_current_mid = smb2_revert_current_mid,
5502 .read_data_offset = smb2_read_data_offset,
5503 .read_data_length = smb2_read_data_length,
5504 .map_error = map_smb2_to_linux_error,
5505 .find_mid = smb2_find_mid,
5506 .check_message = smb2_check_message,
5507 .dump_detail = smb2_dump_detail,
5508 .clear_stats = smb2_clear_stats,
5509 .print_stats = smb2_print_stats,
5510 .dump_share_caps = smb2_dump_share_caps,
5511 .is_oplock_break = smb2_is_valid_oplock_break,
5512 .handle_cancelled_mid = smb2_handle_cancelled_mid,
5513 .downgrade_oplock = smb3_downgrade_oplock,
5514 .need_neg = smb2_need_neg,
5515 .negotiate = smb2_negotiate,
5516 .negotiate_wsize = smb3_negotiate_wsize,
5517 .negotiate_rsize = smb3_negotiate_rsize,
5518 .sess_setup = SMB2_sess_setup,
5519 .logoff = SMB2_logoff,
5520 .tree_connect = SMB2_tcon,
5521 .tree_disconnect = SMB2_tdis,
5522 .qfs_tcon = smb3_qfs_tcon,
5523 .is_path_accessible = smb2_is_path_accessible,
5524 .can_echo = smb2_can_echo,
5526 .query_path_info = smb2_query_path_info,
5527 .query_reparse_point = smb2_query_reparse_point,
5528 .get_srv_inum = smb2_get_srv_inum,
5529 .query_file_info = smb2_query_file_info,
5530 .set_path_size = smb2_set_path_size,
5531 .set_file_size = smb2_set_file_size,
5532 .set_file_info = smb2_set_file_info,
5533 .set_compression = smb2_set_compression,
5534 .mkdir = smb2_mkdir,
5535 .mkdir_setinfo = smb2_mkdir_setinfo,
5536 .posix_mkdir = smb311_posix_mkdir,
5537 .rmdir = smb2_rmdir,
5538 .unlink = smb2_unlink,
5539 .rename = smb2_rename_path,
5540 .create_hardlink = smb2_create_hardlink,
5541 .parse_reparse_point = smb2_parse_reparse_point,
5542 .query_mf_symlink = smb3_query_mf_symlink,
5543 .create_mf_symlink = smb3_create_mf_symlink,
5544 .open = smb2_open_file,
5545 .set_fid = smb2_set_fid,
5546 .close = smb2_close_file,
5547 .close_getattr = smb2_close_getattr,
5548 .flush = smb2_flush_file,
5549 .async_readv = smb2_async_readv,
5550 .async_writev = smb2_async_writev,
5551 .sync_read = smb2_sync_read,
5552 .sync_write = smb2_sync_write,
5553 .query_dir_first = smb2_query_dir_first,
5554 .query_dir_next = smb2_query_dir_next,
5555 .close_dir = smb2_close_dir,
5556 .calc_smb_size = smb2_calc_size,
5557 .is_status_pending = smb2_is_status_pending,
5558 .is_session_expired = smb2_is_session_expired,
5559 .oplock_response = smb2_oplock_response,
5560 .queryfs = smb311_queryfs,
5561 .mand_lock = smb2_mand_lock,
5562 .mand_unlock_range = smb2_unlock_range,
5563 .push_mand_locks = smb2_push_mandatory_locks,
5564 .get_lease_key = smb2_get_lease_key,
5565 .set_lease_key = smb2_set_lease_key,
5566 .new_lease_key = smb2_new_lease_key,
5567 .generate_signingkey = generate_smb311signingkey,
5568 .calc_signature = smb3_calc_signature,
5569 .set_integrity = smb3_set_integrity,
5570 .is_read_op = smb21_is_read_op,
5571 .set_oplock_level = smb3_set_oplock_level,
5572 .create_lease_buf = smb3_create_lease_buf,
5573 .parse_lease_buf = smb3_parse_lease_buf,
5574 .copychunk_range = smb2_copychunk_range,
5575 .duplicate_extents = smb2_duplicate_extents,
5576 /* .validate_negotiate = smb3_validate_negotiate, */ /* not used in 3.11 */
5577 .wp_retry_size = smb2_wp_retry_size,
5578 .dir_needs_close = smb2_dir_needs_close,
5579 .fallocate = smb3_fallocate,
5580 .enum_snapshots = smb3_enum_snapshots,
5581 .notify = smb3_notify,
5582 .init_transform_rq = smb3_init_transform_rq,
5583 .is_transform_hdr = smb3_is_transform_hdr,
5584 .receive_transform = smb3_receive_transform,
5585 .get_dfs_refer = smb2_get_dfs_refer,
5586 .select_sectype = smb2_select_sectype,
5587 #ifdef CONFIG_CIFS_XATTR
5588 .query_all_EAs = smb2_query_eas,
5589 .set_EA = smb2_set_ea,
5590 #endif /* CIFS_XATTR */
5591 .get_acl = get_smb2_acl,
5592 .get_acl_by_fid = get_smb2_acl_by_fid,
5593 .set_acl = set_smb2_acl,
5594 .next_header = smb2_next_header,
5595 .ioctl_query_info = smb2_ioctl_query_info,
5596 .make_node = smb2_make_node,
5597 .fiemap = smb3_fiemap,
5598 .llseek = smb3_llseek,
5599 .is_status_io_timeout = smb2_is_status_io_timeout,
5600 .is_network_name_deleted = smb2_is_network_name_deleted,
5603 #ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY
5604 struct smb_version_values smb20_values = {
5605 .version_string = SMB20_VERSION_STRING,
5606 .protocol_id = SMB20_PROT_ID,
5607 .req_capabilities = 0, /* MBZ */
5608 .large_lock_type = 0,
5609 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE,
5610 .shared_lock_type = SMB2_LOCKFLAG_SHARED,
5611 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
5612 .header_size = sizeof(struct smb2_hdr),
5613 .header_preamble_size = 0,
5614 .max_header_size = MAX_SMB2_HDR_SIZE,
5615 .read_rsp_size = sizeof(struct smb2_read_rsp),
5616 .lock_cmd = SMB2_LOCK,
5618 .cap_nt_find = SMB2_NT_FIND,
5619 .cap_large_files = SMB2_LARGE_FILES,
5620 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
5621 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
5622 .create_lease_size = sizeof(struct create_lease),
5624 #endif /* ALLOW_INSECURE_LEGACY */
5626 struct smb_version_values smb21_values = {
5627 .version_string = SMB21_VERSION_STRING,
5628 .protocol_id = SMB21_PROT_ID,
5629 .req_capabilities = 0, /* MBZ on negotiate req until SMB3 dialect */
5630 .large_lock_type = 0,
5631 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE,
5632 .shared_lock_type = SMB2_LOCKFLAG_SHARED,
5633 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
5634 .header_size = sizeof(struct smb2_hdr),
5635 .header_preamble_size = 0,
5636 .max_header_size = MAX_SMB2_HDR_SIZE,
5637 .read_rsp_size = sizeof(struct smb2_read_rsp),
5638 .lock_cmd = SMB2_LOCK,
5640 .cap_nt_find = SMB2_NT_FIND,
5641 .cap_large_files = SMB2_LARGE_FILES,
5642 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
5643 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
5644 .create_lease_size = sizeof(struct create_lease),
5647 struct smb_version_values smb3any_values = {
5648 .version_string = SMB3ANY_VERSION_STRING,
5649 .protocol_id = SMB302_PROT_ID, /* doesn't matter, send protocol array */
5650 .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,
5651 .large_lock_type = 0,
5652 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE,
5653 .shared_lock_type = SMB2_LOCKFLAG_SHARED,
5654 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
5655 .header_size = sizeof(struct smb2_hdr),
5656 .header_preamble_size = 0,
5657 .max_header_size = MAX_SMB2_HDR_SIZE,
5658 .read_rsp_size = sizeof(struct smb2_read_rsp),
5659 .lock_cmd = SMB2_LOCK,
5661 .cap_nt_find = SMB2_NT_FIND,
5662 .cap_large_files = SMB2_LARGE_FILES,
5663 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
5664 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
5665 .create_lease_size = sizeof(struct create_lease_v2),
5668 struct smb_version_values smbdefault_values = {
5669 .version_string = SMBDEFAULT_VERSION_STRING,
5670 .protocol_id = SMB302_PROT_ID, /* doesn't matter, send protocol array */
5671 .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,
5672 .large_lock_type = 0,
5673 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE,
5674 .shared_lock_type = SMB2_LOCKFLAG_SHARED,
5675 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
5676 .header_size = sizeof(struct smb2_hdr),
5677 .header_preamble_size = 0,
5678 .max_header_size = MAX_SMB2_HDR_SIZE,
5679 .read_rsp_size = sizeof(struct smb2_read_rsp),
5680 .lock_cmd = SMB2_LOCK,
5682 .cap_nt_find = SMB2_NT_FIND,
5683 .cap_large_files = SMB2_LARGE_FILES,
5684 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
5685 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
5686 .create_lease_size = sizeof(struct create_lease_v2),
5689 struct smb_version_values smb30_values = {
5690 .version_string = SMB30_VERSION_STRING,
5691 .protocol_id = SMB30_PROT_ID,
5692 .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,
5693 .large_lock_type = 0,
5694 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE,
5695 .shared_lock_type = SMB2_LOCKFLAG_SHARED,
5696 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
5697 .header_size = sizeof(struct smb2_hdr),
5698 .header_preamble_size = 0,
5699 .max_header_size = MAX_SMB2_HDR_SIZE,
5700 .read_rsp_size = sizeof(struct smb2_read_rsp),
5701 .lock_cmd = SMB2_LOCK,
5703 .cap_nt_find = SMB2_NT_FIND,
5704 .cap_large_files = SMB2_LARGE_FILES,
5705 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
5706 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
5707 .create_lease_size = sizeof(struct create_lease_v2),
5710 struct smb_version_values smb302_values = {
5711 .version_string = SMB302_VERSION_STRING,
5712 .protocol_id = SMB302_PROT_ID,
5713 .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,
5714 .large_lock_type = 0,
5715 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE,
5716 .shared_lock_type = SMB2_LOCKFLAG_SHARED,
5717 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
5718 .header_size = sizeof(struct smb2_hdr),
5719 .header_preamble_size = 0,
5720 .max_header_size = MAX_SMB2_HDR_SIZE,
5721 .read_rsp_size = sizeof(struct smb2_read_rsp),
5722 .lock_cmd = SMB2_LOCK,
5724 .cap_nt_find = SMB2_NT_FIND,
5725 .cap_large_files = SMB2_LARGE_FILES,
5726 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
5727 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
5728 .create_lease_size = sizeof(struct create_lease_v2),
5731 struct smb_version_values smb311_values = {
5732 .version_string = SMB311_VERSION_STRING,
5733 .protocol_id = SMB311_PROT_ID,
5734 .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,
5735 .large_lock_type = 0,
5736 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE,
5737 .shared_lock_type = SMB2_LOCKFLAG_SHARED,
5738 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
5739 .header_size = sizeof(struct smb2_hdr),
5740 .header_preamble_size = 0,
5741 .max_header_size = MAX_SMB2_HDR_SIZE,
5742 .read_rsp_size = sizeof(struct smb2_read_rsp),
5743 .lock_cmd = SMB2_LOCK,
5745 .cap_nt_find = SMB2_NT_FIND,
5746 .cap_large_files = SMB2_LARGE_FILES,
5747 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
5748 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
5749 .create_lease_size = sizeof(struct create_lease_v2),