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>
18 #include "smb2proto.h"
19 #include "cifsproto.h"
20 #include "cifs_debug.h"
21 #include "cifs_unicode.h"
22 #include "smb2status.h"
24 #include "cifs_ioctl.h"
25 #include "smbdirect.h"
27 /* Change credits for different ops and return the total number of credits */
29 change_conf(struct TCP_Server_Info *server)
31 server->credits += server->echo_credits + server->oplock_credits;
32 server->oplock_credits = server->echo_credits = 0;
33 switch (server->credits) {
37 server->echoes = false;
38 server->oplocks = false;
41 server->echoes = true;
42 server->oplocks = false;
43 server->echo_credits = 1;
46 server->echoes = true;
48 server->oplocks = true;
49 server->oplock_credits = 1;
51 server->oplocks = false;
53 server->echo_credits = 1;
55 server->credits -= server->echo_credits + server->oplock_credits;
56 return server->credits + server->echo_credits + server->oplock_credits;
60 smb2_add_credits(struct TCP_Server_Info *server,
61 const struct cifs_credits *credits, const int optype)
64 unsigned int add = credits->value;
65 unsigned int instance = credits->instance;
66 bool reconnect_detected = false;
68 spin_lock(&server->req_lock);
69 val = server->ops->get_credits_field(server, optype);
71 /* eg found case where write overlapping reconnect messed up credits */
72 if (((optype & CIFS_OP_MASK) == CIFS_NEG_OP) && (*val != 0))
73 trace_smb3_reconnect_with_invalid_credits(server->CurrentMid,
74 server->hostname, *val);
75 if ((instance == 0) || (instance == server->reconnect_instance))
78 reconnect_detected = true;
81 *val = 65000; /* Don't get near 64K credits, avoid srv bugs */
82 printk_once(KERN_WARNING "server overflowed SMB3 credits\n");
85 if (server->in_flight == 0 && (optype & CIFS_OP_MASK) != CIFS_NEG_OP)
86 rc = change_conf(server);
88 * Sometimes server returns 0 credits on oplock break ack - we need to
89 * rebalance credits in this case.
91 else if (server->in_flight > 0 && server->oplock_credits == 0 &&
93 if (server->credits > 1) {
95 server->oplock_credits++;
98 spin_unlock(&server->req_lock);
99 wake_up(&server->request_q);
101 if (reconnect_detected)
102 cifs_dbg(FYI, "trying to put %d credits from the old server instance %d\n",
105 if (server->tcpStatus == CifsNeedReconnect
106 || server->tcpStatus == CifsExiting)
111 /* change_conf hasn't been executed */
114 cifs_server_dbg(VFS, "Possible client or server bug - zero credits\n");
117 cifs_server_dbg(VFS, "disabling echoes and oplocks\n");
120 cifs_dbg(FYI, "disabling oplocks\n");
123 cifs_dbg(FYI, "add %u credits total=%d\n", add, rc);
128 smb2_set_credits(struct TCP_Server_Info *server, const int val)
130 spin_lock(&server->req_lock);
131 server->credits = val;
133 server->reconnect_instance++;
134 spin_unlock(&server->req_lock);
135 /* don't log while holding the lock */
137 cifs_dbg(FYI, "set credits to 1 due to smb2 reconnect\n");
141 smb2_get_credits_field(struct TCP_Server_Info *server, const int optype)
145 return &server->echo_credits;
147 return &server->oplock_credits;
149 return &server->credits;
154 smb2_get_credits(struct mid_q_entry *mid)
156 return mid->credits_received;
160 smb2_wait_mtu_credits(struct TCP_Server_Info *server, unsigned int size,
161 unsigned int *num, struct cifs_credits *credits)
164 unsigned int scredits;
166 spin_lock(&server->req_lock);
168 if (server->credits <= 0) {
169 spin_unlock(&server->req_lock);
170 cifs_num_waiters_inc(server);
171 rc = wait_event_killable(server->request_q,
172 has_credits(server, &server->credits, 1));
173 cifs_num_waiters_dec(server);
176 spin_lock(&server->req_lock);
178 if (server->tcpStatus == CifsExiting) {
179 spin_unlock(&server->req_lock);
183 scredits = server->credits;
184 /* can deadlock with reopen */
186 *num = SMB2_MAX_BUFFER_SIZE;
188 credits->instance = 0;
192 /* leave some credits for reopen and other ops */
194 *num = min_t(unsigned int, size,
195 scredits * SMB2_MAX_BUFFER_SIZE);
198 DIV_ROUND_UP(*num, SMB2_MAX_BUFFER_SIZE);
199 credits->instance = server->reconnect_instance;
200 server->credits -= credits->value;
202 if (server->in_flight > server->max_in_flight)
203 server->max_in_flight = server->in_flight;
207 spin_unlock(&server->req_lock);
212 smb2_adjust_credits(struct TCP_Server_Info *server,
213 struct cifs_credits *credits,
214 const unsigned int payload_size)
216 int new_val = DIV_ROUND_UP(payload_size, SMB2_MAX_BUFFER_SIZE);
218 if (!credits->value || credits->value == new_val)
221 if (credits->value < new_val) {
222 WARN_ONCE(1, "request has less credits (%d) than required (%d)",
223 credits->value, new_val);
227 spin_lock(&server->req_lock);
229 if (server->reconnect_instance != credits->instance) {
230 spin_unlock(&server->req_lock);
231 cifs_server_dbg(VFS, "trying to return %d credits to old session\n",
232 credits->value - new_val);
236 server->credits += credits->value - new_val;
237 spin_unlock(&server->req_lock);
238 wake_up(&server->request_q);
239 credits->value = new_val;
244 smb2_get_next_mid(struct TCP_Server_Info *server)
247 /* for SMB2 we need the current value */
248 spin_lock(&GlobalMid_Lock);
249 mid = server->CurrentMid++;
250 spin_unlock(&GlobalMid_Lock);
255 smb2_revert_current_mid(struct TCP_Server_Info *server, const unsigned int val)
257 spin_lock(&GlobalMid_Lock);
258 if (server->CurrentMid >= val)
259 server->CurrentMid -= val;
260 spin_unlock(&GlobalMid_Lock);
263 static struct mid_q_entry *
264 smb2_find_mid(struct TCP_Server_Info *server, char *buf)
266 struct mid_q_entry *mid;
267 struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)buf;
268 __u64 wire_mid = le64_to_cpu(shdr->MessageId);
270 if (shdr->ProtocolId == SMB2_TRANSFORM_PROTO_NUM) {
271 cifs_server_dbg(VFS, "Encrypted frame parsing not supported yet\n");
275 spin_lock(&GlobalMid_Lock);
276 list_for_each_entry(mid, &server->pending_mid_q, qhead) {
277 if ((mid->mid == wire_mid) &&
278 (mid->mid_state == MID_REQUEST_SUBMITTED) &&
279 (mid->command == shdr->Command)) {
280 kref_get(&mid->refcount);
281 spin_unlock(&GlobalMid_Lock);
285 spin_unlock(&GlobalMid_Lock);
290 smb2_dump_detail(void *buf, struct TCP_Server_Info *server)
292 #ifdef CONFIG_CIFS_DEBUG2
293 struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)buf;
295 cifs_server_dbg(VFS, "Cmd: %d Err: 0x%x Flags: 0x%x Mid: %llu Pid: %d\n",
296 shdr->Command, shdr->Status, shdr->Flags, shdr->MessageId,
298 cifs_server_dbg(VFS, "smb buf %p len %u\n", buf,
299 server->ops->calc_smb_size(buf, server));
304 smb2_need_neg(struct TCP_Server_Info *server)
306 return server->max_read == 0;
310 smb2_negotiate(const unsigned int xid, struct cifs_ses *ses)
314 cifs_ses_server(ses)->CurrentMid = 0;
315 rc = SMB2_negotiate(xid, ses);
316 /* BB we probably don't need to retry with modern servers */
323 smb2_negotiate_wsize(struct cifs_tcon *tcon, struct smb_vol *volume_info)
325 struct TCP_Server_Info *server = tcon->ses->server;
328 /* start with specified wsize, or default */
329 wsize = volume_info->wsize ? volume_info->wsize : CIFS_DEFAULT_IOSIZE;
330 wsize = min_t(unsigned int, wsize, server->max_write);
331 #ifdef CONFIG_CIFS_SMB_DIRECT
334 wsize = min_t(unsigned int,
335 wsize, server->smbd_conn->max_fragmented_send_size);
337 wsize = min_t(unsigned int,
338 wsize, server->smbd_conn->max_readwrite_size);
341 if (!(server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU))
342 wsize = min_t(unsigned int, wsize, SMB2_MAX_BUFFER_SIZE);
348 smb3_negotiate_wsize(struct cifs_tcon *tcon, struct smb_vol *volume_info)
350 struct TCP_Server_Info *server = tcon->ses->server;
353 /* start with specified wsize, or default */
354 wsize = volume_info->wsize ? volume_info->wsize : SMB3_DEFAULT_IOSIZE;
355 wsize = min_t(unsigned int, wsize, server->max_write);
356 #ifdef CONFIG_CIFS_SMB_DIRECT
359 wsize = min_t(unsigned int,
360 wsize, server->smbd_conn->max_fragmented_send_size);
362 wsize = min_t(unsigned int,
363 wsize, server->smbd_conn->max_readwrite_size);
366 if (!(server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU))
367 wsize = min_t(unsigned int, wsize, SMB2_MAX_BUFFER_SIZE);
373 smb2_negotiate_rsize(struct cifs_tcon *tcon, struct smb_vol *volume_info)
375 struct TCP_Server_Info *server = tcon->ses->server;
378 /* start with specified rsize, or default */
379 rsize = volume_info->rsize ? volume_info->rsize : CIFS_DEFAULT_IOSIZE;
380 rsize = min_t(unsigned int, rsize, server->max_read);
381 #ifdef CONFIG_CIFS_SMB_DIRECT
384 rsize = min_t(unsigned int,
385 rsize, server->smbd_conn->max_fragmented_recv_size);
387 rsize = min_t(unsigned int,
388 rsize, server->smbd_conn->max_readwrite_size);
392 if (!(server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU))
393 rsize = min_t(unsigned int, rsize, SMB2_MAX_BUFFER_SIZE);
399 smb3_negotiate_rsize(struct cifs_tcon *tcon, struct smb_vol *volume_info)
401 struct TCP_Server_Info *server = tcon->ses->server;
404 /* start with specified rsize, or default */
405 rsize = volume_info->rsize ? volume_info->rsize : SMB3_DEFAULT_IOSIZE;
406 rsize = min_t(unsigned int, rsize, server->max_read);
407 #ifdef CONFIG_CIFS_SMB_DIRECT
410 rsize = min_t(unsigned int,
411 rsize, server->smbd_conn->max_fragmented_recv_size);
413 rsize = min_t(unsigned int,
414 rsize, server->smbd_conn->max_readwrite_size);
418 if (!(server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU))
419 rsize = min_t(unsigned int, rsize, SMB2_MAX_BUFFER_SIZE);
425 parse_server_interfaces(struct network_interface_info_ioctl_rsp *buf,
427 struct cifs_server_iface **iface_list,
430 struct network_interface_info_ioctl_rsp *p;
431 struct sockaddr_in *addr4;
432 struct sockaddr_in6 *addr6;
433 struct iface_info_ipv4 *p4;
434 struct iface_info_ipv6 *p6;
435 struct cifs_server_iface *info;
445 * Fist pass: count and sanity check
448 bytes_left = buf_len;
450 while (bytes_left >= sizeof(*p)) {
452 next = le32_to_cpu(p->Next);
454 bytes_left -= sizeof(*p);
457 p = (struct network_interface_info_ioctl_rsp *)((u8 *)p+next);
462 cifs_dbg(VFS, "%s: malformed interface info\n", __func__);
467 if (bytes_left || p->Next)
468 cifs_dbg(VFS, "%s: incomplete interface info\n", __func__);
472 * Second pass: extract info to internal structure
475 *iface_list = kcalloc(nb_iface, sizeof(**iface_list), GFP_KERNEL);
482 bytes_left = buf_len;
484 while (bytes_left >= sizeof(*p)) {
485 info->speed = le64_to_cpu(p->LinkSpeed);
486 info->rdma_capable = le32_to_cpu(p->Capability & RDMA_CAPABLE);
487 info->rss_capable = le32_to_cpu(p->Capability & RSS_CAPABLE);
489 cifs_dbg(FYI, "%s: adding iface %zu\n", __func__, *iface_count);
490 cifs_dbg(FYI, "%s: speed %zu bps\n", __func__, info->speed);
491 cifs_dbg(FYI, "%s: capabilities 0x%08x\n", __func__,
492 le32_to_cpu(p->Capability));
496 * The kernel and wire socket structures have the same
497 * layout and use network byte order but make the
498 * conversion explicit in case either one changes.
501 addr4 = (struct sockaddr_in *)&info->sockaddr;
502 p4 = (struct iface_info_ipv4 *)p->Buffer;
503 addr4->sin_family = AF_INET;
504 memcpy(&addr4->sin_addr, &p4->IPv4Address, 4);
506 /* [MS-SMB2] 2.2.32.5.1.1 Clients MUST ignore these */
507 addr4->sin_port = cpu_to_be16(CIFS_PORT);
509 cifs_dbg(FYI, "%s: ipv4 %pI4\n", __func__,
513 addr6 = (struct sockaddr_in6 *)&info->sockaddr;
514 p6 = (struct iface_info_ipv6 *)p->Buffer;
515 addr6->sin6_family = AF_INET6;
516 memcpy(&addr6->sin6_addr, &p6->IPv6Address, 16);
518 /* [MS-SMB2] 2.2.32.5.1.2 Clients MUST ignore these */
519 addr6->sin6_flowinfo = 0;
520 addr6->sin6_scope_id = 0;
521 addr6->sin6_port = cpu_to_be16(CIFS_PORT);
523 cifs_dbg(FYI, "%s: ipv6 %pI6\n", __func__,
528 "%s: skipping unsupported socket family\n",
536 next = le32_to_cpu(p->Next);
539 p = (struct network_interface_info_ioctl_rsp *)((u8 *)p+next);
557 static int compare_iface(const void *ia, const void *ib)
559 const struct cifs_server_iface *a = (struct cifs_server_iface *)ia;
560 const struct cifs_server_iface *b = (struct cifs_server_iface *)ib;
562 return a->speed == b->speed ? 0 : (a->speed > b->speed ? -1 : 1);
566 SMB3_request_interfaces(const unsigned int xid, struct cifs_tcon *tcon)
569 unsigned int ret_data_len = 0;
570 struct network_interface_info_ioctl_rsp *out_buf = NULL;
571 struct cifs_server_iface *iface_list;
573 struct cifs_ses *ses = tcon->ses;
575 rc = SMB2_ioctl(xid, tcon, NO_FILE_ID, NO_FILE_ID,
576 FSCTL_QUERY_NETWORK_INTERFACE_INFO, true /* is_fsctl */,
577 NULL /* no data input */, 0 /* no data input */,
578 CIFSMaxBufSize, (char **)&out_buf, &ret_data_len);
579 if (rc == -EOPNOTSUPP) {
581 "server does not support query network interfaces\n");
583 } else if (rc != 0) {
584 cifs_tcon_dbg(VFS, "error %d on ioctl to get interface list\n", rc);
588 rc = parse_server_interfaces(out_buf, ret_data_len,
589 &iface_list, &iface_count);
593 /* sort interfaces from fastest to slowest */
594 sort(iface_list, iface_count, sizeof(*iface_list), compare_iface, NULL);
596 spin_lock(&ses->iface_lock);
597 kfree(ses->iface_list);
598 ses->iface_list = iface_list;
599 ses->iface_count = iface_count;
600 ses->iface_last_update = jiffies;
601 spin_unlock(&ses->iface_lock);
609 smb2_close_cached_fid(struct kref *ref)
611 struct cached_fid *cfid = container_of(ref, struct cached_fid,
614 if (cfid->is_valid) {
615 cifs_dbg(FYI, "clear cached root file handle\n");
616 SMB2_close(0, cfid->tcon, cfid->fid->persistent_fid,
617 cfid->fid->volatile_fid);
618 cfid->is_valid = false;
619 cfid->file_all_info_is_valid = false;
620 cfid->has_lease = false;
624 void close_shroot(struct cached_fid *cfid)
626 mutex_lock(&cfid->fid_mutex);
627 kref_put(&cfid->refcount, smb2_close_cached_fid);
628 mutex_unlock(&cfid->fid_mutex);
631 void close_shroot_lease_locked(struct cached_fid *cfid)
633 if (cfid->has_lease) {
634 cfid->has_lease = false;
635 kref_put(&cfid->refcount, smb2_close_cached_fid);
639 void close_shroot_lease(struct cached_fid *cfid)
641 mutex_lock(&cfid->fid_mutex);
642 close_shroot_lease_locked(cfid);
643 mutex_unlock(&cfid->fid_mutex);
647 smb2_cached_lease_break(struct work_struct *work)
649 struct cached_fid *cfid = container_of(work,
650 struct cached_fid, lease_break);
652 close_shroot_lease(cfid);
656 * Open the directory at the root of a share
658 int open_shroot(unsigned int xid, struct cifs_tcon *tcon,
659 struct cifs_sb_info *cifs_sb, struct cifs_fid *pfid)
661 struct cifs_ses *ses = tcon->ses;
662 struct TCP_Server_Info *server = ses->server;
663 struct cifs_open_parms oparms;
664 struct smb2_create_rsp *o_rsp = NULL;
665 struct smb2_query_info_rsp *qi_rsp = NULL;
667 struct smb_rqst rqst[2];
668 struct kvec rsp_iov[2];
669 struct kvec open_iov[SMB2_CREATE_IOV_SIZE];
670 struct kvec qi_iov[1];
672 __le16 utf16_path = 0; /* Null - since an open of top of share */
673 u8 oplock = SMB2_OPLOCK_LEVEL_II;
675 mutex_lock(&tcon->crfid.fid_mutex);
676 if (tcon->crfid.is_valid) {
677 cifs_dbg(FYI, "found a cached root file handle\n");
678 memcpy(pfid, tcon->crfid.fid, sizeof(struct cifs_fid));
679 kref_get(&tcon->crfid.refcount);
680 mutex_unlock(&tcon->crfid.fid_mutex);
685 * We do not hold the lock for the open because in case
686 * SMB2_open needs to reconnect, it will end up calling
687 * cifs_mark_open_files_invalid() which takes the lock again
688 * thus causing a deadlock
691 mutex_unlock(&tcon->crfid.fid_mutex);
693 if (smb3_encryption_required(tcon))
694 flags |= CIFS_TRANSFORM_REQ;
696 memset(rqst, 0, sizeof(rqst));
697 resp_buftype[0] = resp_buftype[1] = CIFS_NO_BUFFER;
698 memset(rsp_iov, 0, sizeof(rsp_iov));
701 memset(&open_iov, 0, sizeof(open_iov));
702 rqst[0].rq_iov = open_iov;
703 rqst[0].rq_nvec = SMB2_CREATE_IOV_SIZE;
706 oparms.create_options = cifs_create_options(cifs_sb, 0);
707 oparms.desired_access = FILE_READ_ATTRIBUTES;
708 oparms.disposition = FILE_OPEN;
710 oparms.reconnect = false;
712 rc = SMB2_open_init(tcon, &rqst[0], &oplock, &oparms, &utf16_path);
715 smb2_set_next_command(tcon, &rqst[0]);
717 memset(&qi_iov, 0, sizeof(qi_iov));
718 rqst[1].rq_iov = qi_iov;
721 rc = SMB2_query_info_init(tcon, &rqst[1], COMPOUND_FID,
722 COMPOUND_FID, FILE_ALL_INFORMATION,
724 sizeof(struct smb2_file_all_info) +
725 PATH_MAX * 2, 0, NULL);
729 smb2_set_related(&rqst[1]);
731 rc = compound_send_recv(xid, ses, flags, 2, rqst,
732 resp_buftype, rsp_iov);
733 mutex_lock(&tcon->crfid.fid_mutex);
736 * Now we need to check again as the cached root might have
737 * been successfully re-opened from a concurrent process
740 if (tcon->crfid.is_valid) {
741 /* work was already done */
743 /* stash fids for close() later */
744 struct cifs_fid fid = {
745 .persistent_fid = pfid->persistent_fid,
746 .volatile_fid = pfid->volatile_fid,
750 * caller expects this func to set pfid to a valid
751 * cached root, so we copy the existing one and get a
754 memcpy(pfid, tcon->crfid.fid, sizeof(*pfid));
755 kref_get(&tcon->crfid.refcount);
757 mutex_unlock(&tcon->crfid.fid_mutex);
760 /* close extra handle outside of crit sec */
761 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
766 /* Cached root is still invalid, continue normaly */
769 if (rc == -EREMCHG) {
770 tcon->need_reconnect = true;
771 printk_once(KERN_WARNING "server share %s deleted\n",
777 atomic_inc(&tcon->num_remote_opens);
779 o_rsp = (struct smb2_create_rsp *)rsp_iov[0].iov_base;
780 oparms.fid->persistent_fid = o_rsp->PersistentFileId;
781 oparms.fid->volatile_fid = o_rsp->VolatileFileId;
782 #ifdef CONFIG_CIFS_DEBUG2
783 oparms.fid->mid = le64_to_cpu(o_rsp->sync_hdr.MessageId);
784 #endif /* CIFS_DEBUG2 */
786 memcpy(tcon->crfid.fid, pfid, sizeof(struct cifs_fid));
787 tcon->crfid.tcon = tcon;
788 tcon->crfid.is_valid = true;
789 kref_init(&tcon->crfid.refcount);
791 /* BB TBD check to see if oplock level check can be removed below */
792 if (o_rsp->OplockLevel == SMB2_OPLOCK_LEVEL_LEASE) {
793 kref_get(&tcon->crfid.refcount);
794 tcon->crfid.has_lease = true;
795 smb2_parse_contexts(server, o_rsp,
797 oparms.fid->lease_key, &oplock, NULL);
801 qi_rsp = (struct smb2_query_info_rsp *)rsp_iov[1].iov_base;
802 if (le32_to_cpu(qi_rsp->OutputBufferLength) < sizeof(struct smb2_file_all_info))
804 if (!smb2_validate_and_copy_iov(
805 le16_to_cpu(qi_rsp->OutputBufferOffset),
806 sizeof(struct smb2_file_all_info),
807 &rsp_iov[1], sizeof(struct smb2_file_all_info),
808 (char *)&tcon->crfid.file_all_info))
809 tcon->crfid.file_all_info_is_valid = true;
812 mutex_unlock(&tcon->crfid.fid_mutex);
814 SMB2_open_free(&rqst[0]);
815 SMB2_query_info_free(&rqst[1]);
816 free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base);
817 free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base);
822 smb3_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon,
823 struct cifs_sb_info *cifs_sb)
826 __le16 srch_path = 0; /* Null - open root of share */
827 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
828 struct cifs_open_parms oparms;
830 bool no_cached_open = tcon->nohandlecache;
833 oparms.desired_access = FILE_READ_ATTRIBUTES;
834 oparms.disposition = FILE_OPEN;
835 oparms.create_options = cifs_create_options(cifs_sb, 0);
837 oparms.reconnect = false;
840 rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL,
843 rc = open_shroot(xid, tcon, cifs_sb, &fid);
848 SMB3_request_interfaces(xid, tcon);
850 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
851 FS_ATTRIBUTE_INFORMATION);
852 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
853 FS_DEVICE_INFORMATION);
854 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
855 FS_VOLUME_INFORMATION);
856 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
857 FS_SECTOR_SIZE_INFORMATION); /* SMB3 specific */
859 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
861 close_shroot(&tcon->crfid);
865 smb2_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon,
866 struct cifs_sb_info *cifs_sb)
869 __le16 srch_path = 0; /* Null - open root of share */
870 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
871 struct cifs_open_parms oparms;
875 oparms.desired_access = FILE_READ_ATTRIBUTES;
876 oparms.disposition = FILE_OPEN;
877 oparms.create_options = cifs_create_options(cifs_sb, 0);
879 oparms.reconnect = false;
881 rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL, NULL);
885 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
886 FS_ATTRIBUTE_INFORMATION);
887 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
888 FS_DEVICE_INFORMATION);
889 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
893 smb2_is_path_accessible(const unsigned int xid, struct cifs_tcon *tcon,
894 struct cifs_sb_info *cifs_sb, const char *full_path)
898 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
899 struct cifs_open_parms oparms;
902 if ((*full_path == 0) && tcon->crfid.is_valid)
905 utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb);
910 oparms.desired_access = FILE_READ_ATTRIBUTES;
911 oparms.disposition = FILE_OPEN;
912 oparms.create_options = cifs_create_options(cifs_sb, 0);
914 oparms.reconnect = false;
916 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL, NULL);
922 rc = SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
928 smb2_get_srv_inum(const unsigned int xid, struct cifs_tcon *tcon,
929 struct cifs_sb_info *cifs_sb, const char *full_path,
930 u64 *uniqueid, FILE_ALL_INFO *data)
932 *uniqueid = le64_to_cpu(data->IndexNumber);
937 smb2_query_file_info(const unsigned int xid, struct cifs_tcon *tcon,
938 struct cifs_fid *fid, FILE_ALL_INFO *data)
941 struct smb2_file_all_info *smb2_data;
943 smb2_data = kzalloc(sizeof(struct smb2_file_all_info) + PATH_MAX * 2,
945 if (smb2_data == NULL)
948 rc = SMB2_query_info(xid, tcon, fid->persistent_fid, fid->volatile_fid,
951 move_smb2_info_to_cifs(data, smb2_data);
956 #ifdef CONFIG_CIFS_XATTR
958 move_smb2_ea_to_cifs(char *dst, size_t dst_size,
959 struct smb2_file_full_ea_info *src, size_t src_size,
960 const unsigned char *ea_name)
963 unsigned int ea_name_len = ea_name ? strlen(ea_name) : 0;
965 size_t buf_size = dst_size;
966 size_t name_len, value_len, user_name_len;
968 while (src_size > 0) {
969 name = &src->ea_data[0];
970 name_len = (size_t)src->ea_name_length;
971 value = &src->ea_data[src->ea_name_length + 1];
972 value_len = (size_t)le16_to_cpu(src->ea_value_length);
977 if (src_size < 8 + name_len + 1 + value_len) {
978 cifs_dbg(FYI, "EA entry goes beyond length of list\n");
984 if (ea_name_len == name_len &&
985 memcmp(ea_name, name, name_len) == 0) {
989 if (dst_size < value_len) {
993 memcpy(dst, value, value_len);
997 /* 'user.' plus a terminating null */
998 user_name_len = 5 + 1 + name_len;
1000 if (buf_size == 0) {
1001 /* skip copy - calc size only */
1002 rc += user_name_len;
1003 } else if (dst_size >= user_name_len) {
1004 dst_size -= user_name_len;
1005 memcpy(dst, "user.", 5);
1007 memcpy(dst, src->ea_data, name_len);
1011 rc += user_name_len;
1013 /* stop before overrun buffer */
1019 if (!src->next_entry_offset)
1022 if (src_size < le32_to_cpu(src->next_entry_offset)) {
1023 /* stop before overrun buffer */
1027 src_size -= le32_to_cpu(src->next_entry_offset);
1028 src = (void *)((char *)src +
1029 le32_to_cpu(src->next_entry_offset));
1032 /* didn't find the named attribute */
1041 smb2_query_eas(const unsigned int xid, struct cifs_tcon *tcon,
1042 const unsigned char *path, const unsigned char *ea_name,
1043 char *ea_data, size_t buf_size,
1044 struct cifs_sb_info *cifs_sb)
1048 struct kvec rsp_iov = {NULL, 0};
1049 int buftype = CIFS_NO_BUFFER;
1050 struct smb2_query_info_rsp *rsp;
1051 struct smb2_file_full_ea_info *info = NULL;
1053 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
1057 rc = smb2_query_info_compound(xid, tcon, utf16_path,
1059 FILE_FULL_EA_INFORMATION,
1062 MAX_SMB2_CREATE_RESPONSE_SIZE -
1063 MAX_SMB2_CLOSE_RESPONSE_SIZE,
1064 &rsp_iov, &buftype, cifs_sb);
1067 * If ea_name is NULL (listxattr) and there are no EAs,
1068 * return 0 as it's not an error. Otherwise, the specified
1069 * ea_name was not found.
1071 if (!ea_name && rc == -ENODATA)
1076 rsp = (struct smb2_query_info_rsp *)rsp_iov.iov_base;
1077 rc = smb2_validate_iov(le16_to_cpu(rsp->OutputBufferOffset),
1078 le32_to_cpu(rsp->OutputBufferLength),
1080 sizeof(struct smb2_file_full_ea_info));
1084 info = (struct smb2_file_full_ea_info *)(
1085 le16_to_cpu(rsp->OutputBufferOffset) + (char *)rsp);
1086 rc = move_smb2_ea_to_cifs(ea_data, buf_size, info,
1087 le32_to_cpu(rsp->OutputBufferLength), ea_name);
1091 free_rsp_buf(buftype, rsp_iov.iov_base);
1097 smb2_set_ea(const unsigned int xid, struct cifs_tcon *tcon,
1098 const char *path, const char *ea_name, const void *ea_value,
1099 const __u16 ea_value_len, const struct nls_table *nls_codepage,
1100 struct cifs_sb_info *cifs_sb)
1102 struct cifs_ses *ses = tcon->ses;
1103 __le16 *utf16_path = NULL;
1104 int ea_name_len = strlen(ea_name);
1107 struct smb_rqst rqst[3];
1108 int resp_buftype[3];
1109 struct kvec rsp_iov[3];
1110 struct kvec open_iov[SMB2_CREATE_IOV_SIZE];
1111 struct cifs_open_parms oparms;
1112 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
1113 struct cifs_fid fid;
1114 struct kvec si_iov[SMB2_SET_INFO_IOV_SIZE];
1115 unsigned int size[1];
1117 struct smb2_file_full_ea_info *ea = NULL;
1118 struct kvec close_iov[1];
1119 struct smb2_query_info_rsp *rsp;
1120 int rc, used_len = 0;
1122 if (smb3_encryption_required(tcon))
1123 flags |= CIFS_TRANSFORM_REQ;
1125 if (ea_name_len > 255)
1128 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
1132 memset(rqst, 0, sizeof(rqst));
1133 resp_buftype[0] = resp_buftype[1] = resp_buftype[2] = CIFS_NO_BUFFER;
1134 memset(rsp_iov, 0, sizeof(rsp_iov));
1136 if (ses->server->ops->query_all_EAs) {
1138 rc = ses->server->ops->query_all_EAs(xid, tcon, path,
1144 /* If we are adding a attribute we should first check
1145 * if there will be enough space available to store
1146 * the new EA. If not we should not add it since we
1147 * would not be able to even read the EAs back.
1149 rc = smb2_query_info_compound(xid, tcon, utf16_path,
1151 FILE_FULL_EA_INFORMATION,
1154 MAX_SMB2_CREATE_RESPONSE_SIZE -
1155 MAX_SMB2_CLOSE_RESPONSE_SIZE,
1156 &rsp_iov[1], &resp_buftype[1], cifs_sb);
1158 rsp = (struct smb2_query_info_rsp *)rsp_iov[1].iov_base;
1159 used_len = le32_to_cpu(rsp->OutputBufferLength);
1161 free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base);
1162 resp_buftype[1] = CIFS_NO_BUFFER;
1163 memset(&rsp_iov[1], 0, sizeof(rsp_iov[1]));
1166 /* Use a fudge factor of 256 bytes in case we collide
1167 * with a different set_EAs command.
1169 if(CIFSMaxBufSize - MAX_SMB2_CREATE_RESPONSE_SIZE -
1170 MAX_SMB2_CLOSE_RESPONSE_SIZE - 256 <
1171 used_len + ea_name_len + ea_value_len + 1) {
1179 memset(&open_iov, 0, sizeof(open_iov));
1180 rqst[0].rq_iov = open_iov;
1181 rqst[0].rq_nvec = SMB2_CREATE_IOV_SIZE;
1183 memset(&oparms, 0, sizeof(oparms));
1185 oparms.desired_access = FILE_WRITE_EA;
1186 oparms.disposition = FILE_OPEN;
1187 oparms.create_options = cifs_create_options(cifs_sb, 0);
1189 oparms.reconnect = false;
1191 rc = SMB2_open_init(tcon, &rqst[0], &oplock, &oparms, utf16_path);
1194 smb2_set_next_command(tcon, &rqst[0]);
1198 memset(&si_iov, 0, sizeof(si_iov));
1199 rqst[1].rq_iov = si_iov;
1200 rqst[1].rq_nvec = 1;
1202 len = sizeof(ea) + ea_name_len + ea_value_len + 1;
1203 ea = kzalloc(len, GFP_KERNEL);
1209 ea->ea_name_length = ea_name_len;
1210 ea->ea_value_length = cpu_to_le16(ea_value_len);
1211 memcpy(ea->ea_data, ea_name, ea_name_len + 1);
1212 memcpy(ea->ea_data + ea_name_len + 1, ea_value, ea_value_len);
1217 rc = SMB2_set_info_init(tcon, &rqst[1], COMPOUND_FID,
1218 COMPOUND_FID, current->tgid,
1219 FILE_FULL_EA_INFORMATION,
1220 SMB2_O_INFO_FILE, 0, data, size);
1221 smb2_set_next_command(tcon, &rqst[1]);
1222 smb2_set_related(&rqst[1]);
1226 memset(&close_iov, 0, sizeof(close_iov));
1227 rqst[2].rq_iov = close_iov;
1228 rqst[2].rq_nvec = 1;
1229 rc = SMB2_close_init(tcon, &rqst[2], COMPOUND_FID, COMPOUND_FID, false);
1230 smb2_set_related(&rqst[2]);
1232 rc = compound_send_recv(xid, ses, flags, 3, rqst,
1233 resp_buftype, rsp_iov);
1234 /* no need to bump num_remote_opens because handle immediately closed */
1239 SMB2_open_free(&rqst[0]);
1240 SMB2_set_info_free(&rqst[1]);
1241 SMB2_close_free(&rqst[2]);
1242 free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base);
1243 free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base);
1244 free_rsp_buf(resp_buftype[2], rsp_iov[2].iov_base);
1250 smb2_can_echo(struct TCP_Server_Info *server)
1252 return server->echoes;
1256 smb2_clear_stats(struct cifs_tcon *tcon)
1260 for (i = 0; i < NUMBER_OF_SMB2_COMMANDS; i++) {
1261 atomic_set(&tcon->stats.smb2_stats.smb2_com_sent[i], 0);
1262 atomic_set(&tcon->stats.smb2_stats.smb2_com_failed[i], 0);
1267 smb2_dump_share_caps(struct seq_file *m, struct cifs_tcon *tcon)
1269 seq_puts(m, "\n\tShare Capabilities:");
1270 if (tcon->capabilities & SMB2_SHARE_CAP_DFS)
1271 seq_puts(m, " DFS,");
1272 if (tcon->capabilities & SMB2_SHARE_CAP_CONTINUOUS_AVAILABILITY)
1273 seq_puts(m, " CONTINUOUS AVAILABILITY,");
1274 if (tcon->capabilities & SMB2_SHARE_CAP_SCALEOUT)
1275 seq_puts(m, " SCALEOUT,");
1276 if (tcon->capabilities & SMB2_SHARE_CAP_CLUSTER)
1277 seq_puts(m, " CLUSTER,");
1278 if (tcon->capabilities & SMB2_SHARE_CAP_ASYMMETRIC)
1279 seq_puts(m, " ASYMMETRIC,");
1280 if (tcon->capabilities == 0)
1281 seq_puts(m, " None");
1282 if (tcon->ss_flags & SSINFO_FLAGS_ALIGNED_DEVICE)
1283 seq_puts(m, " Aligned,");
1284 if (tcon->ss_flags & SSINFO_FLAGS_PARTITION_ALIGNED_ON_DEVICE)
1285 seq_puts(m, " Partition Aligned,");
1286 if (tcon->ss_flags & SSINFO_FLAGS_NO_SEEK_PENALTY)
1287 seq_puts(m, " SSD,");
1288 if (tcon->ss_flags & SSINFO_FLAGS_TRIM_ENABLED)
1289 seq_puts(m, " TRIM-support,");
1291 seq_printf(m, "\tShare Flags: 0x%x", tcon->share_flags);
1292 seq_printf(m, "\n\ttid: 0x%x", tcon->tid);
1293 if (tcon->perf_sector_size)
1294 seq_printf(m, "\tOptimal sector size: 0x%x",
1295 tcon->perf_sector_size);
1296 seq_printf(m, "\tMaximal Access: 0x%x", tcon->maximal_access);
1300 smb2_print_stats(struct seq_file *m, struct cifs_tcon *tcon)
1302 atomic_t *sent = tcon->stats.smb2_stats.smb2_com_sent;
1303 atomic_t *failed = tcon->stats.smb2_stats.smb2_com_failed;
1306 * Can't display SMB2_NEGOTIATE, SESSION_SETUP, LOGOFF, CANCEL and ECHO
1307 * totals (requests sent) since those SMBs are per-session not per tcon
1309 seq_printf(m, "\nBytes read: %llu Bytes written: %llu",
1310 (long long)(tcon->bytes_read),
1311 (long long)(tcon->bytes_written));
1312 seq_printf(m, "\nOpen files: %d total (local), %d open on server",
1313 atomic_read(&tcon->num_local_opens),
1314 atomic_read(&tcon->num_remote_opens));
1315 seq_printf(m, "\nTreeConnects: %d total %d failed",
1316 atomic_read(&sent[SMB2_TREE_CONNECT_HE]),
1317 atomic_read(&failed[SMB2_TREE_CONNECT_HE]));
1318 seq_printf(m, "\nTreeDisconnects: %d total %d failed",
1319 atomic_read(&sent[SMB2_TREE_DISCONNECT_HE]),
1320 atomic_read(&failed[SMB2_TREE_DISCONNECT_HE]));
1321 seq_printf(m, "\nCreates: %d total %d failed",
1322 atomic_read(&sent[SMB2_CREATE_HE]),
1323 atomic_read(&failed[SMB2_CREATE_HE]));
1324 seq_printf(m, "\nCloses: %d total %d failed",
1325 atomic_read(&sent[SMB2_CLOSE_HE]),
1326 atomic_read(&failed[SMB2_CLOSE_HE]));
1327 seq_printf(m, "\nFlushes: %d total %d failed",
1328 atomic_read(&sent[SMB2_FLUSH_HE]),
1329 atomic_read(&failed[SMB2_FLUSH_HE]));
1330 seq_printf(m, "\nReads: %d total %d failed",
1331 atomic_read(&sent[SMB2_READ_HE]),
1332 atomic_read(&failed[SMB2_READ_HE]));
1333 seq_printf(m, "\nWrites: %d total %d failed",
1334 atomic_read(&sent[SMB2_WRITE_HE]),
1335 atomic_read(&failed[SMB2_WRITE_HE]));
1336 seq_printf(m, "\nLocks: %d total %d failed",
1337 atomic_read(&sent[SMB2_LOCK_HE]),
1338 atomic_read(&failed[SMB2_LOCK_HE]));
1339 seq_printf(m, "\nIOCTLs: %d total %d failed",
1340 atomic_read(&sent[SMB2_IOCTL_HE]),
1341 atomic_read(&failed[SMB2_IOCTL_HE]));
1342 seq_printf(m, "\nQueryDirectories: %d total %d failed",
1343 atomic_read(&sent[SMB2_QUERY_DIRECTORY_HE]),
1344 atomic_read(&failed[SMB2_QUERY_DIRECTORY_HE]));
1345 seq_printf(m, "\nChangeNotifies: %d total %d failed",
1346 atomic_read(&sent[SMB2_CHANGE_NOTIFY_HE]),
1347 atomic_read(&failed[SMB2_CHANGE_NOTIFY_HE]));
1348 seq_printf(m, "\nQueryInfos: %d total %d failed",
1349 atomic_read(&sent[SMB2_QUERY_INFO_HE]),
1350 atomic_read(&failed[SMB2_QUERY_INFO_HE]));
1351 seq_printf(m, "\nSetInfos: %d total %d failed",
1352 atomic_read(&sent[SMB2_SET_INFO_HE]),
1353 atomic_read(&failed[SMB2_SET_INFO_HE]));
1354 seq_printf(m, "\nOplockBreaks: %d sent %d failed",
1355 atomic_read(&sent[SMB2_OPLOCK_BREAK_HE]),
1356 atomic_read(&failed[SMB2_OPLOCK_BREAK_HE]));
1360 smb2_set_fid(struct cifsFileInfo *cfile, struct cifs_fid *fid, __u32 oplock)
1362 struct cifsInodeInfo *cinode = CIFS_I(d_inode(cfile->dentry));
1363 struct TCP_Server_Info *server = tlink_tcon(cfile->tlink)->ses->server;
1365 cfile->fid.persistent_fid = fid->persistent_fid;
1366 cfile->fid.volatile_fid = fid->volatile_fid;
1367 cfile->fid.access = fid->access;
1368 #ifdef CONFIG_CIFS_DEBUG2
1369 cfile->fid.mid = fid->mid;
1370 #endif /* CIFS_DEBUG2 */
1371 server->ops->set_oplock_level(cinode, oplock, fid->epoch,
1373 cinode->can_cache_brlcks = CIFS_CACHE_WRITE(cinode);
1374 memcpy(cfile->fid.create_guid, fid->create_guid, 16);
1378 smb2_close_file(const unsigned int xid, struct cifs_tcon *tcon,
1379 struct cifs_fid *fid)
1381 SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
1385 smb2_close_getattr(const unsigned int xid, struct cifs_tcon *tcon,
1386 struct cifsFileInfo *cfile)
1388 struct smb2_file_network_open_info file_inf;
1389 struct inode *inode;
1392 rc = __SMB2_close(xid, tcon, cfile->fid.persistent_fid,
1393 cfile->fid.volatile_fid, &file_inf);
1397 inode = d_inode(cfile->dentry);
1399 spin_lock(&inode->i_lock);
1400 CIFS_I(inode)->time = jiffies;
1402 /* Creation time should not need to be updated on close */
1403 if (file_inf.LastWriteTime)
1404 inode->i_mtime = cifs_NTtimeToUnix(file_inf.LastWriteTime);
1405 if (file_inf.ChangeTime)
1406 inode->i_ctime = cifs_NTtimeToUnix(file_inf.ChangeTime);
1407 if (file_inf.LastAccessTime)
1408 inode->i_atime = cifs_NTtimeToUnix(file_inf.LastAccessTime);
1411 * i_blocks is not related to (i_size / i_blksize),
1412 * but instead 512 byte (2**9) size is required for
1413 * calculating num blocks.
1415 if (le64_to_cpu(file_inf.AllocationSize) > 4096)
1417 (512 - 1 + le64_to_cpu(file_inf.AllocationSize)) >> 9;
1419 /* End of file and Attributes should not have to be updated on close */
1420 spin_unlock(&inode->i_lock);
1424 SMB2_request_res_key(const unsigned int xid, struct cifs_tcon *tcon,
1425 u64 persistent_fid, u64 volatile_fid,
1426 struct copychunk_ioctl *pcchunk)
1429 unsigned int ret_data_len;
1430 struct resume_key_req *res_key;
1432 rc = SMB2_ioctl(xid, tcon, persistent_fid, volatile_fid,
1433 FSCTL_SRV_REQUEST_RESUME_KEY, true /* is_fsctl */,
1434 NULL, 0 /* no input */, CIFSMaxBufSize,
1435 (char **)&res_key, &ret_data_len);
1438 cifs_tcon_dbg(VFS, "refcpy ioctl error %d getting resume key\n", rc);
1439 goto req_res_key_exit;
1441 if (ret_data_len < sizeof(struct resume_key_req)) {
1442 cifs_tcon_dbg(VFS, "Invalid refcopy resume key length\n");
1444 goto req_res_key_exit;
1446 memcpy(pcchunk->SourceKey, res_key->ResumeKey, COPY_CHUNK_RES_KEY_SIZE);
1454 smb2_ioctl_query_info(const unsigned int xid,
1455 struct cifs_tcon *tcon,
1456 struct cifs_sb_info *cifs_sb,
1457 __le16 *path, int is_dir,
1460 struct cifs_ses *ses = tcon->ses;
1461 char __user *arg = (char __user *)p;
1462 struct smb_query_info qi;
1463 struct smb_query_info __user *pqi;
1466 struct smb2_query_info_rsp *qi_rsp = NULL;
1467 struct smb2_ioctl_rsp *io_rsp = NULL;
1468 void *buffer = NULL;
1469 struct smb_rqst rqst[3];
1470 int resp_buftype[3];
1471 struct kvec rsp_iov[3];
1472 struct kvec open_iov[SMB2_CREATE_IOV_SIZE];
1473 struct cifs_open_parms oparms;
1474 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
1475 struct cifs_fid fid;
1476 struct kvec qi_iov[1];
1477 struct kvec io_iov[SMB2_IOCTL_IOV_SIZE];
1478 struct kvec si_iov[SMB2_SET_INFO_IOV_SIZE];
1479 struct kvec close_iov[1];
1480 unsigned int size[2];
1482 int create_options = is_dir ? CREATE_NOT_FILE : CREATE_NOT_DIR;
1484 memset(rqst, 0, sizeof(rqst));
1485 resp_buftype[0] = resp_buftype[1] = resp_buftype[2] = CIFS_NO_BUFFER;
1486 memset(rsp_iov, 0, sizeof(rsp_iov));
1488 if (copy_from_user(&qi, arg, sizeof(struct smb_query_info)))
1491 if (qi.output_buffer_length > 1024)
1494 if (!ses || !(ses->server))
1497 if (smb3_encryption_required(tcon))
1498 flags |= CIFS_TRANSFORM_REQ;
1500 buffer = memdup_user(arg + sizeof(struct smb_query_info),
1501 qi.output_buffer_length);
1503 return PTR_ERR(buffer);
1506 memset(&open_iov, 0, sizeof(open_iov));
1507 rqst[0].rq_iov = open_iov;
1508 rqst[0].rq_nvec = SMB2_CREATE_IOV_SIZE;
1510 memset(&oparms, 0, sizeof(oparms));
1512 oparms.disposition = FILE_OPEN;
1513 oparms.create_options = cifs_create_options(cifs_sb, create_options);
1515 oparms.reconnect = false;
1517 if (qi.flags & PASSTHRU_FSCTL) {
1518 switch (qi.info_type & FSCTL_DEVICE_ACCESS_MASK) {
1519 case FSCTL_DEVICE_ACCESS_FILE_READ_WRITE_ACCESS:
1520 oparms.desired_access = FILE_READ_DATA | FILE_WRITE_DATA | FILE_READ_ATTRIBUTES | SYNCHRONIZE;
1522 case FSCTL_DEVICE_ACCESS_FILE_ANY_ACCESS:
1523 oparms.desired_access = GENERIC_ALL;
1525 case FSCTL_DEVICE_ACCESS_FILE_READ_ACCESS:
1526 oparms.desired_access = GENERIC_READ;
1528 case FSCTL_DEVICE_ACCESS_FILE_WRITE_ACCESS:
1529 oparms.desired_access = GENERIC_WRITE;
1532 } else if (qi.flags & PASSTHRU_SET_INFO) {
1533 oparms.desired_access = GENERIC_WRITE;
1535 oparms.desired_access = FILE_READ_ATTRIBUTES | READ_CONTROL;
1538 rc = SMB2_open_init(tcon, &rqst[0], &oplock, &oparms, path);
1541 smb2_set_next_command(tcon, &rqst[0]);
1544 if (qi.flags & PASSTHRU_FSCTL) {
1545 /* Can eventually relax perm check since server enforces too */
1546 if (!capable(CAP_SYS_ADMIN))
1549 memset(&io_iov, 0, sizeof(io_iov));
1550 rqst[1].rq_iov = io_iov;
1551 rqst[1].rq_nvec = SMB2_IOCTL_IOV_SIZE;
1553 rc = SMB2_ioctl_init(tcon, &rqst[1],
1554 COMPOUND_FID, COMPOUND_FID,
1555 qi.info_type, true, buffer,
1556 qi.output_buffer_length,
1558 MAX_SMB2_CREATE_RESPONSE_SIZE -
1559 MAX_SMB2_CLOSE_RESPONSE_SIZE);
1561 } else if (qi.flags == PASSTHRU_SET_INFO) {
1562 /* Can eventually relax perm check since server enforces too */
1563 if (!capable(CAP_SYS_ADMIN))
1566 memset(&si_iov, 0, sizeof(si_iov));
1567 rqst[1].rq_iov = si_iov;
1568 rqst[1].rq_nvec = 1;
1573 rc = SMB2_set_info_init(tcon, &rqst[1],
1574 COMPOUND_FID, COMPOUND_FID,
1576 FILE_END_OF_FILE_INFORMATION,
1577 SMB2_O_INFO_FILE, 0, data, size);
1579 } else if (qi.flags == PASSTHRU_QUERY_INFO) {
1580 memset(&qi_iov, 0, sizeof(qi_iov));
1581 rqst[1].rq_iov = qi_iov;
1582 rqst[1].rq_nvec = 1;
1584 rc = SMB2_query_info_init(tcon, &rqst[1], COMPOUND_FID,
1585 COMPOUND_FID, qi.file_info_class,
1586 qi.info_type, qi.additional_information,
1587 qi.input_buffer_length,
1588 qi.output_buffer_length, buffer);
1589 } else { /* unknown flags */
1590 cifs_tcon_dbg(VFS, "invalid passthru query flags: 0x%x\n", qi.flags);
1596 smb2_set_next_command(tcon, &rqst[1]);
1597 smb2_set_related(&rqst[1]);
1600 memset(&close_iov, 0, sizeof(close_iov));
1601 rqst[2].rq_iov = close_iov;
1602 rqst[2].rq_nvec = 1;
1604 rc = SMB2_close_init(tcon, &rqst[2], COMPOUND_FID, COMPOUND_FID, false);
1607 smb2_set_related(&rqst[2]);
1609 rc = compound_send_recv(xid, ses, flags, 3, rqst,
1610 resp_buftype, rsp_iov);
1614 /* No need to bump num_remote_opens since handle immediately closed */
1615 if (qi.flags & PASSTHRU_FSCTL) {
1616 pqi = (struct smb_query_info __user *)arg;
1617 io_rsp = (struct smb2_ioctl_rsp *)rsp_iov[1].iov_base;
1618 if (le32_to_cpu(io_rsp->OutputCount) < qi.input_buffer_length)
1619 qi.input_buffer_length = le32_to_cpu(io_rsp->OutputCount);
1620 if (qi.input_buffer_length > 0 &&
1621 le32_to_cpu(io_rsp->OutputOffset) + qi.input_buffer_length
1622 > rsp_iov[1].iov_len)
1625 if (copy_to_user(&pqi->input_buffer_length,
1626 &qi.input_buffer_length,
1627 sizeof(qi.input_buffer_length)))
1630 if (copy_to_user((void __user *)pqi + sizeof(struct smb_query_info),
1631 (const void *)io_rsp + le32_to_cpu(io_rsp->OutputOffset),
1632 qi.input_buffer_length))
1635 pqi = (struct smb_query_info __user *)arg;
1636 qi_rsp = (struct smb2_query_info_rsp *)rsp_iov[1].iov_base;
1637 if (le32_to_cpu(qi_rsp->OutputBufferLength) < qi.input_buffer_length)
1638 qi.input_buffer_length = le32_to_cpu(qi_rsp->OutputBufferLength);
1639 if (copy_to_user(&pqi->input_buffer_length,
1640 &qi.input_buffer_length,
1641 sizeof(qi.input_buffer_length)))
1644 if (copy_to_user(pqi + 1, qi_rsp->Buffer,
1645 qi.input_buffer_length))
1651 SMB2_open_free(&rqst[0]);
1652 if (qi.flags & PASSTHRU_FSCTL)
1653 SMB2_ioctl_free(&rqst[1]);
1655 SMB2_query_info_free(&rqst[1]);
1657 SMB2_close_free(&rqst[2]);
1658 free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base);
1659 free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base);
1660 free_rsp_buf(resp_buftype[2], rsp_iov[2].iov_base);
1669 smb2_copychunk_range(const unsigned int xid,
1670 struct cifsFileInfo *srcfile,
1671 struct cifsFileInfo *trgtfile, u64 src_off,
1672 u64 len, u64 dest_off)
1675 unsigned int ret_data_len;
1676 struct copychunk_ioctl *pcchunk;
1677 struct copychunk_ioctl_rsp *retbuf = NULL;
1678 struct cifs_tcon *tcon;
1679 int chunks_copied = 0;
1680 bool chunk_sizes_updated = false;
1681 ssize_t bytes_written, total_bytes_written = 0;
1683 pcchunk = kmalloc(sizeof(struct copychunk_ioctl), GFP_KERNEL);
1685 if (pcchunk == NULL)
1688 cifs_dbg(FYI, "%s: about to call request res key\n", __func__);
1689 /* Request a key from the server to identify the source of the copy */
1690 rc = SMB2_request_res_key(xid, tlink_tcon(srcfile->tlink),
1691 srcfile->fid.persistent_fid,
1692 srcfile->fid.volatile_fid, pcchunk);
1694 /* Note: request_res_key sets res_key null only if rc !=0 */
1698 /* For now array only one chunk long, will make more flexible later */
1699 pcchunk->ChunkCount = cpu_to_le32(1);
1700 pcchunk->Reserved = 0;
1701 pcchunk->Reserved2 = 0;
1703 tcon = tlink_tcon(trgtfile->tlink);
1706 pcchunk->SourceOffset = cpu_to_le64(src_off);
1707 pcchunk->TargetOffset = cpu_to_le64(dest_off);
1709 cpu_to_le32(min_t(u32, len, tcon->max_bytes_chunk));
1711 /* Request server copy to target from src identified by key */
1712 rc = SMB2_ioctl(xid, tcon, trgtfile->fid.persistent_fid,
1713 trgtfile->fid.volatile_fid, FSCTL_SRV_COPYCHUNK_WRITE,
1714 true /* is_fsctl */, (char *)pcchunk,
1715 sizeof(struct copychunk_ioctl), CIFSMaxBufSize,
1716 (char **)&retbuf, &ret_data_len);
1719 sizeof(struct copychunk_ioctl_rsp)) {
1720 cifs_tcon_dbg(VFS, "invalid cchunk response size\n");
1724 if (retbuf->TotalBytesWritten == 0) {
1725 cifs_dbg(FYI, "no bytes copied\n");
1730 * Check if server claimed to write more than we asked
1732 if (le32_to_cpu(retbuf->TotalBytesWritten) >
1733 le32_to_cpu(pcchunk->Length)) {
1734 cifs_tcon_dbg(VFS, "invalid copy chunk response\n");
1738 if (le32_to_cpu(retbuf->ChunksWritten) != 1) {
1739 cifs_tcon_dbg(VFS, "invalid num chunks written\n");
1745 bytes_written = le32_to_cpu(retbuf->TotalBytesWritten);
1746 src_off += bytes_written;
1747 dest_off += bytes_written;
1748 len -= bytes_written;
1749 total_bytes_written += bytes_written;
1751 cifs_dbg(FYI, "Chunks %d PartialChunk %d Total %zu\n",
1752 le32_to_cpu(retbuf->ChunksWritten),
1753 le32_to_cpu(retbuf->ChunkBytesWritten),
1755 } else if (rc == -EINVAL) {
1756 if (ret_data_len != sizeof(struct copychunk_ioctl_rsp))
1759 cifs_dbg(FYI, "MaxChunks %d BytesChunk %d MaxCopy %d\n",
1760 le32_to_cpu(retbuf->ChunksWritten),
1761 le32_to_cpu(retbuf->ChunkBytesWritten),
1762 le32_to_cpu(retbuf->TotalBytesWritten));
1765 * Check if this is the first request using these sizes,
1766 * (ie check if copy succeed once with original sizes
1767 * and check if the server gave us different sizes after
1768 * we already updated max sizes on previous request).
1769 * if not then why is the server returning an error now
1771 if ((chunks_copied != 0) || chunk_sizes_updated)
1774 /* Check that server is not asking us to grow size */
1775 if (le32_to_cpu(retbuf->ChunkBytesWritten) <
1776 tcon->max_bytes_chunk)
1777 tcon->max_bytes_chunk =
1778 le32_to_cpu(retbuf->ChunkBytesWritten);
1780 goto cchunk_out; /* server gave us bogus size */
1782 /* No need to change MaxChunks since already set to 1 */
1783 chunk_sizes_updated = true;
1794 return total_bytes_written;
1798 smb2_flush_file(const unsigned int xid, struct cifs_tcon *tcon,
1799 struct cifs_fid *fid)
1801 return SMB2_flush(xid, tcon, fid->persistent_fid, fid->volatile_fid);
1805 smb2_read_data_offset(char *buf)
1807 struct smb2_read_rsp *rsp = (struct smb2_read_rsp *)buf;
1809 return rsp->DataOffset;
1813 smb2_read_data_length(char *buf, bool in_remaining)
1815 struct smb2_read_rsp *rsp = (struct smb2_read_rsp *)buf;
1818 return le32_to_cpu(rsp->DataRemaining);
1820 return le32_to_cpu(rsp->DataLength);
1825 smb2_sync_read(const unsigned int xid, struct cifs_fid *pfid,
1826 struct cifs_io_parms *parms, unsigned int *bytes_read,
1827 char **buf, int *buf_type)
1829 parms->persistent_fid = pfid->persistent_fid;
1830 parms->volatile_fid = pfid->volatile_fid;
1831 return SMB2_read(xid, parms, bytes_read, buf, buf_type);
1835 smb2_sync_write(const unsigned int xid, struct cifs_fid *pfid,
1836 struct cifs_io_parms *parms, unsigned int *written,
1837 struct kvec *iov, unsigned long nr_segs)
1840 parms->persistent_fid = pfid->persistent_fid;
1841 parms->volatile_fid = pfid->volatile_fid;
1842 return SMB2_write(xid, parms, written, iov, nr_segs);
1845 /* Set or clear the SPARSE_FILE attribute based on value passed in setsparse */
1846 static bool smb2_set_sparse(const unsigned int xid, struct cifs_tcon *tcon,
1847 struct cifsFileInfo *cfile, struct inode *inode, __u8 setsparse)
1849 struct cifsInodeInfo *cifsi;
1852 cifsi = CIFS_I(inode);
1854 /* if file already sparse don't bother setting sparse again */
1855 if ((cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) && setsparse)
1856 return true; /* already sparse */
1858 if (!(cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) && !setsparse)
1859 return true; /* already not sparse */
1862 * Can't check for sparse support on share the usual way via the
1863 * FS attribute info (FILE_SUPPORTS_SPARSE_FILES) on the share
1864 * since Samba server doesn't set the flag on the share, yet
1865 * supports the set sparse FSCTL and returns sparse correctly
1866 * in the file attributes. If we fail setting sparse though we
1867 * mark that server does not support sparse files for this share
1868 * to avoid repeatedly sending the unsupported fsctl to server
1869 * if the file is repeatedly extended.
1871 if (tcon->broken_sparse_sup)
1874 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
1875 cfile->fid.volatile_fid, FSCTL_SET_SPARSE,
1877 &setsparse, 1, CIFSMaxBufSize, NULL, NULL);
1879 tcon->broken_sparse_sup = true;
1880 cifs_dbg(FYI, "set sparse rc = %d\n", rc);
1885 cifsi->cifsAttrs |= FILE_ATTRIBUTE_SPARSE_FILE;
1887 cifsi->cifsAttrs &= (~FILE_ATTRIBUTE_SPARSE_FILE);
1893 smb2_set_file_size(const unsigned int xid, struct cifs_tcon *tcon,
1894 struct cifsFileInfo *cfile, __u64 size, bool set_alloc)
1896 __le64 eof = cpu_to_le64(size);
1897 struct inode *inode;
1900 * If extending file more than one page make sparse. Many Linux fs
1901 * make files sparse by default when extending via ftruncate
1903 inode = d_inode(cfile->dentry);
1905 if (!set_alloc && (size > inode->i_size + 8192)) {
1906 __u8 set_sparse = 1;
1908 /* whether set sparse succeeds or not, extend the file */
1909 smb2_set_sparse(xid, tcon, cfile, inode, set_sparse);
1912 return SMB2_set_eof(xid, tcon, cfile->fid.persistent_fid,
1913 cfile->fid.volatile_fid, cfile->pid, &eof);
1917 smb2_duplicate_extents(const unsigned int xid,
1918 struct cifsFileInfo *srcfile,
1919 struct cifsFileInfo *trgtfile, u64 src_off,
1920 u64 len, u64 dest_off)
1923 unsigned int ret_data_len;
1924 struct duplicate_extents_to_file dup_ext_buf;
1925 struct cifs_tcon *tcon = tlink_tcon(trgtfile->tlink);
1927 /* server fileays advertise duplicate extent support with this flag */
1928 if ((le32_to_cpu(tcon->fsAttrInfo.Attributes) &
1929 FILE_SUPPORTS_BLOCK_REFCOUNTING) == 0)
1932 dup_ext_buf.VolatileFileHandle = srcfile->fid.volatile_fid;
1933 dup_ext_buf.PersistentFileHandle = srcfile->fid.persistent_fid;
1934 dup_ext_buf.SourceFileOffset = cpu_to_le64(src_off);
1935 dup_ext_buf.TargetFileOffset = cpu_to_le64(dest_off);
1936 dup_ext_buf.ByteCount = cpu_to_le64(len);
1937 cifs_dbg(FYI, "Duplicate extents: src off %lld dst off %lld len %lld\n",
1938 src_off, dest_off, len);
1940 rc = smb2_set_file_size(xid, tcon, trgtfile, dest_off + len, false);
1942 goto duplicate_extents_out;
1944 rc = SMB2_ioctl(xid, tcon, trgtfile->fid.persistent_fid,
1945 trgtfile->fid.volatile_fid,
1946 FSCTL_DUPLICATE_EXTENTS_TO_FILE,
1947 true /* is_fsctl */,
1948 (char *)&dup_ext_buf,
1949 sizeof(struct duplicate_extents_to_file),
1950 CIFSMaxBufSize, NULL,
1953 if (ret_data_len > 0)
1954 cifs_dbg(FYI, "Non-zero response length in duplicate extents\n");
1956 duplicate_extents_out:
1961 smb2_set_compression(const unsigned int xid, struct cifs_tcon *tcon,
1962 struct cifsFileInfo *cfile)
1964 return SMB2_set_compression(xid, tcon, cfile->fid.persistent_fid,
1965 cfile->fid.volatile_fid);
1969 smb3_set_integrity(const unsigned int xid, struct cifs_tcon *tcon,
1970 struct cifsFileInfo *cfile)
1972 struct fsctl_set_integrity_information_req integr_info;
1973 unsigned int ret_data_len;
1975 integr_info.ChecksumAlgorithm = cpu_to_le16(CHECKSUM_TYPE_UNCHANGED);
1976 integr_info.Flags = 0;
1977 integr_info.Reserved = 0;
1979 return SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
1980 cfile->fid.volatile_fid,
1981 FSCTL_SET_INTEGRITY_INFORMATION,
1982 true /* is_fsctl */,
1983 (char *)&integr_info,
1984 sizeof(struct fsctl_set_integrity_information_req),
1985 CIFSMaxBufSize, NULL,
1990 /* GMT Token is @GMT-YYYY.MM.DD-HH.MM.SS Unicode which is 48 bytes + null */
1991 #define GMT_TOKEN_SIZE 50
1993 #define MIN_SNAPSHOT_ARRAY_SIZE 16 /* See MS-SMB2 section 3.3.5.15.1 */
1996 * Input buffer contains (empty) struct smb_snapshot array with size filled in
1997 * For output see struct SRV_SNAPSHOT_ARRAY in MS-SMB2 section 2.2.32.2
2000 smb3_enum_snapshots(const unsigned int xid, struct cifs_tcon *tcon,
2001 struct cifsFileInfo *cfile, void __user *ioc_buf)
2003 char *retbuf = NULL;
2004 unsigned int ret_data_len = 0;
2006 u32 max_response_size;
2007 struct smb_snapshot_array snapshot_in;
2010 * On the first query to enumerate the list of snapshots available
2011 * for this volume the buffer begins with 0 (number of snapshots
2012 * which can be returned is zero since at that point we do not know
2013 * how big the buffer needs to be). On the second query,
2014 * it (ret_data_len) is set to number of snapshots so we can
2015 * know to set the maximum response size larger (see below).
2017 if (get_user(ret_data_len, (unsigned int __user *)ioc_buf))
2021 * Note that for snapshot queries that servers like Azure expect that
2022 * the first query be minimal size (and just used to get the number/size
2023 * of previous versions) so response size must be specified as EXACTLY
2024 * sizeof(struct snapshot_array) which is 16 when rounded up to multiple
2027 if (ret_data_len == 0)
2028 max_response_size = MIN_SNAPSHOT_ARRAY_SIZE;
2030 max_response_size = CIFSMaxBufSize;
2032 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
2033 cfile->fid.volatile_fid,
2034 FSCTL_SRV_ENUMERATE_SNAPSHOTS,
2035 true /* is_fsctl */,
2036 NULL, 0 /* no input data */, max_response_size,
2039 cifs_dbg(FYI, "enum snaphots ioctl returned %d and ret buflen is %d\n",
2044 if (ret_data_len && (ioc_buf != NULL) && (retbuf != NULL)) {
2046 if (copy_from_user(&snapshot_in, ioc_buf,
2047 sizeof(struct smb_snapshot_array))) {
2054 * Check for min size, ie not large enough to fit even one GMT
2055 * token (snapshot). On the first ioctl some users may pass in
2056 * smaller size (or zero) to simply get the size of the array
2057 * so the user space caller can allocate sufficient memory
2058 * and retry the ioctl again with larger array size sufficient
2059 * to hold all of the snapshot GMT tokens on the second try.
2061 if (snapshot_in.snapshot_array_size < GMT_TOKEN_SIZE)
2062 ret_data_len = sizeof(struct smb_snapshot_array);
2065 * We return struct SRV_SNAPSHOT_ARRAY, followed by
2066 * the snapshot array (of 50 byte GMT tokens) each
2067 * representing an available previous version of the data
2069 if (ret_data_len > (snapshot_in.snapshot_array_size +
2070 sizeof(struct smb_snapshot_array)))
2071 ret_data_len = snapshot_in.snapshot_array_size +
2072 sizeof(struct smb_snapshot_array);
2074 if (copy_to_user(ioc_buf, retbuf, ret_data_len))
2085 smb3_notify(const unsigned int xid, struct file *pfile,
2086 void __user *ioc_buf)
2088 struct smb3_notify notify;
2089 struct dentry *dentry = pfile->f_path.dentry;
2090 struct inode *inode = file_inode(pfile);
2091 struct cifs_sb_info *cifs_sb;
2092 struct cifs_open_parms oparms;
2093 struct cifs_fid fid;
2094 struct cifs_tcon *tcon;
2095 unsigned char *path = NULL;
2096 __le16 *utf16_path = NULL;
2097 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
2100 path = build_path_from_dentry(dentry);
2104 cifs_sb = CIFS_SB(inode->i_sb);
2106 utf16_path = cifs_convert_path_to_utf16(path + 1, cifs_sb);
2107 if (utf16_path == NULL) {
2112 if (copy_from_user(¬ify, ioc_buf, sizeof(struct smb3_notify))) {
2117 tcon = cifs_sb_master_tcon(cifs_sb);
2119 oparms.desired_access = FILE_READ_ATTRIBUTES;
2120 oparms.disposition = FILE_OPEN;
2121 oparms.create_options = cifs_create_options(cifs_sb, 0);
2123 oparms.reconnect = false;
2125 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL, NULL);
2129 rc = SMB2_change_notify(xid, tcon, fid.persistent_fid, fid.volatile_fid,
2130 notify.watch_tree, notify.completion_filter);
2132 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
2134 cifs_dbg(FYI, "change notify for path %s rc %d\n", path, rc);
2143 smb2_query_dir_first(const unsigned int xid, struct cifs_tcon *tcon,
2144 const char *path, struct cifs_sb_info *cifs_sb,
2145 struct cifs_fid *fid, __u16 search_flags,
2146 struct cifs_search_info *srch_inf)
2149 struct smb_rqst rqst[2];
2150 struct kvec rsp_iov[2];
2151 int resp_buftype[2];
2152 struct kvec open_iov[SMB2_CREATE_IOV_SIZE];
2153 struct kvec qd_iov[SMB2_QUERY_DIRECTORY_IOV_SIZE];
2155 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
2156 struct cifs_open_parms oparms;
2157 struct smb2_query_directory_rsp *qd_rsp = NULL;
2158 struct smb2_create_rsp *op_rsp = NULL;
2160 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
2164 if (smb3_encryption_required(tcon))
2165 flags |= CIFS_TRANSFORM_REQ;
2167 memset(rqst, 0, sizeof(rqst));
2168 resp_buftype[0] = resp_buftype[1] = CIFS_NO_BUFFER;
2169 memset(rsp_iov, 0, sizeof(rsp_iov));
2172 memset(&open_iov, 0, sizeof(open_iov));
2173 rqst[0].rq_iov = open_iov;
2174 rqst[0].rq_nvec = SMB2_CREATE_IOV_SIZE;
2177 oparms.desired_access = FILE_READ_ATTRIBUTES | FILE_READ_DATA;
2178 oparms.disposition = FILE_OPEN;
2179 oparms.create_options = cifs_create_options(cifs_sb, 0);
2181 oparms.reconnect = false;
2183 rc = SMB2_open_init(tcon, &rqst[0], &oplock, &oparms, utf16_path);
2186 smb2_set_next_command(tcon, &rqst[0]);
2188 /* Query directory */
2189 srch_inf->entries_in_buffer = 0;
2190 srch_inf->index_of_last_entry = 2;
2192 memset(&qd_iov, 0, sizeof(qd_iov));
2193 rqst[1].rq_iov = qd_iov;
2194 rqst[1].rq_nvec = SMB2_QUERY_DIRECTORY_IOV_SIZE;
2196 rc = SMB2_query_directory_init(xid, tcon, &rqst[1],
2197 COMPOUND_FID, COMPOUND_FID,
2198 0, srch_inf->info_level);
2202 smb2_set_related(&rqst[1]);
2204 rc = compound_send_recv(xid, tcon->ses, flags, 2, rqst,
2205 resp_buftype, rsp_iov);
2207 /* If the open failed there is nothing to do */
2208 op_rsp = (struct smb2_create_rsp *)rsp_iov[0].iov_base;
2209 if (op_rsp == NULL || op_rsp->sync_hdr.Status != STATUS_SUCCESS) {
2210 cifs_dbg(FYI, "query_dir_first: open failed rc=%d\n", rc);
2213 fid->persistent_fid = op_rsp->PersistentFileId;
2214 fid->volatile_fid = op_rsp->VolatileFileId;
2216 /* Anything else than ENODATA means a genuine error */
2217 if (rc && rc != -ENODATA) {
2218 SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
2219 cifs_dbg(FYI, "query_dir_first: query directory failed rc=%d\n", rc);
2220 trace_smb3_query_dir_err(xid, fid->persistent_fid,
2221 tcon->tid, tcon->ses->Suid, 0, 0, rc);
2225 qd_rsp = (struct smb2_query_directory_rsp *)rsp_iov[1].iov_base;
2226 if (qd_rsp->sync_hdr.Status == STATUS_NO_MORE_FILES) {
2227 trace_smb3_query_dir_done(xid, fid->persistent_fid,
2228 tcon->tid, tcon->ses->Suid, 0, 0);
2229 srch_inf->endOfSearch = true;
2234 rc = smb2_parse_query_directory(tcon, &rsp_iov[1], resp_buftype[1],
2237 trace_smb3_query_dir_err(xid, fid->persistent_fid, tcon->tid,
2238 tcon->ses->Suid, 0, 0, rc);
2241 resp_buftype[1] = CIFS_NO_BUFFER;
2243 trace_smb3_query_dir_done(xid, fid->persistent_fid, tcon->tid,
2244 tcon->ses->Suid, 0, srch_inf->entries_in_buffer);
2248 SMB2_open_free(&rqst[0]);
2249 SMB2_query_directory_free(&rqst[1]);
2250 free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base);
2251 free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base);
2256 smb2_query_dir_next(const unsigned int xid, struct cifs_tcon *tcon,
2257 struct cifs_fid *fid, __u16 search_flags,
2258 struct cifs_search_info *srch_inf)
2260 return SMB2_query_directory(xid, tcon, fid->persistent_fid,
2261 fid->volatile_fid, 0, srch_inf);
2265 smb2_close_dir(const unsigned int xid, struct cifs_tcon *tcon,
2266 struct cifs_fid *fid)
2268 return SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
2272 * If we negotiate SMB2 protocol and get STATUS_PENDING - update
2273 * the number of credits and return true. Otherwise - return false.
2276 smb2_is_status_pending(char *buf, struct TCP_Server_Info *server)
2278 struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)buf;
2280 if (shdr->Status != STATUS_PENDING)
2283 if (shdr->CreditRequest) {
2284 spin_lock(&server->req_lock);
2285 server->credits += le16_to_cpu(shdr->CreditRequest);
2286 spin_unlock(&server->req_lock);
2287 wake_up(&server->request_q);
2294 smb2_is_session_expired(char *buf)
2296 struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)buf;
2298 if (shdr->Status != STATUS_NETWORK_SESSION_EXPIRED &&
2299 shdr->Status != STATUS_USER_SESSION_DELETED)
2302 trace_smb3_ses_expired(shdr->TreeId, shdr->SessionId,
2303 le16_to_cpu(shdr->Command),
2304 le64_to_cpu(shdr->MessageId));
2305 cifs_dbg(FYI, "Session expired or deleted\n");
2311 smb2_oplock_response(struct cifs_tcon *tcon, struct cifs_fid *fid,
2312 struct cifsInodeInfo *cinode)
2314 if (tcon->ses->server->capabilities & SMB2_GLOBAL_CAP_LEASING)
2315 return SMB2_lease_break(0, tcon, cinode->lease_key,
2316 smb2_get_lease_state(cinode));
2318 return SMB2_oplock_break(0, tcon, fid->persistent_fid,
2320 CIFS_CACHE_READ(cinode) ? 1 : 0);
2324 smb2_set_related(struct smb_rqst *rqst)
2326 struct smb2_sync_hdr *shdr;
2328 shdr = (struct smb2_sync_hdr *)(rqst->rq_iov[0].iov_base);
2330 cifs_dbg(FYI, "shdr NULL in smb2_set_related\n");
2333 shdr->Flags |= SMB2_FLAGS_RELATED_OPERATIONS;
2336 char smb2_padding[7] = {0, 0, 0, 0, 0, 0, 0};
2339 smb2_set_next_command(struct cifs_tcon *tcon, struct smb_rqst *rqst)
2341 struct smb2_sync_hdr *shdr;
2342 struct cifs_ses *ses = tcon->ses;
2343 struct TCP_Server_Info *server = ses->server;
2344 unsigned long len = smb_rqst_len(server, rqst);
2347 shdr = (struct smb2_sync_hdr *)(rqst->rq_iov[0].iov_base);
2349 cifs_dbg(FYI, "shdr NULL in smb2_set_next_command\n");
2353 /* SMB headers in a compound are 8 byte aligned. */
2355 /* No padding needed */
2359 num_padding = 8 - (len & 7);
2360 if (!smb3_encryption_required(tcon)) {
2362 * If we do not have encryption then we can just add an extra
2363 * iov for the padding.
2365 rqst->rq_iov[rqst->rq_nvec].iov_base = smb2_padding;
2366 rqst->rq_iov[rqst->rq_nvec].iov_len = num_padding;
2371 * We can not add a small padding iov for the encryption case
2372 * because the encryption framework can not handle the padding
2374 * We have to flatten this into a single buffer and add
2375 * the padding to it.
2377 for (i = 1; i < rqst->rq_nvec; i++) {
2378 memcpy(rqst->rq_iov[0].iov_base +
2379 rqst->rq_iov[0].iov_len,
2380 rqst->rq_iov[i].iov_base,
2381 rqst->rq_iov[i].iov_len);
2382 rqst->rq_iov[0].iov_len += rqst->rq_iov[i].iov_len;
2384 memset(rqst->rq_iov[0].iov_base + rqst->rq_iov[0].iov_len,
2386 rqst->rq_iov[0].iov_len += num_padding;
2392 shdr->NextCommand = cpu_to_le32(len);
2396 * Passes the query info response back to the caller on success.
2397 * Caller need to free this with free_rsp_buf().
2400 smb2_query_info_compound(const unsigned int xid, struct cifs_tcon *tcon,
2401 __le16 *utf16_path, u32 desired_access,
2402 u32 class, u32 type, u32 output_len,
2403 struct kvec *rsp, int *buftype,
2404 struct cifs_sb_info *cifs_sb)
2406 struct cifs_ses *ses = tcon->ses;
2408 struct smb_rqst rqst[3];
2409 int resp_buftype[3];
2410 struct kvec rsp_iov[3];
2411 struct kvec open_iov[SMB2_CREATE_IOV_SIZE];
2412 struct kvec qi_iov[1];
2413 struct kvec close_iov[1];
2414 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
2415 struct cifs_open_parms oparms;
2416 struct cifs_fid fid;
2419 if (smb3_encryption_required(tcon))
2420 flags |= CIFS_TRANSFORM_REQ;
2422 memset(rqst, 0, sizeof(rqst));
2423 resp_buftype[0] = resp_buftype[1] = resp_buftype[2] = CIFS_NO_BUFFER;
2424 memset(rsp_iov, 0, sizeof(rsp_iov));
2426 memset(&open_iov, 0, sizeof(open_iov));
2427 rqst[0].rq_iov = open_iov;
2428 rqst[0].rq_nvec = SMB2_CREATE_IOV_SIZE;
2431 oparms.desired_access = desired_access;
2432 oparms.disposition = FILE_OPEN;
2433 oparms.create_options = cifs_create_options(cifs_sb, 0);
2435 oparms.reconnect = false;
2437 rc = SMB2_open_init(tcon, &rqst[0], &oplock, &oparms, utf16_path);
2440 smb2_set_next_command(tcon, &rqst[0]);
2442 memset(&qi_iov, 0, sizeof(qi_iov));
2443 rqst[1].rq_iov = qi_iov;
2444 rqst[1].rq_nvec = 1;
2446 rc = SMB2_query_info_init(tcon, &rqst[1], COMPOUND_FID, COMPOUND_FID,
2452 smb2_set_next_command(tcon, &rqst[1]);
2453 smb2_set_related(&rqst[1]);
2455 memset(&close_iov, 0, sizeof(close_iov));
2456 rqst[2].rq_iov = close_iov;
2457 rqst[2].rq_nvec = 1;
2459 rc = SMB2_close_init(tcon, &rqst[2], COMPOUND_FID, COMPOUND_FID, false);
2462 smb2_set_related(&rqst[2]);
2464 rc = compound_send_recv(xid, ses, flags, 3, rqst,
2465 resp_buftype, rsp_iov);
2467 free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base);
2468 if (rc == -EREMCHG) {
2469 tcon->need_reconnect = true;
2470 printk_once(KERN_WARNING "server share %s deleted\n",
2476 *buftype = resp_buftype[1];
2479 SMB2_open_free(&rqst[0]);
2480 SMB2_query_info_free(&rqst[1]);
2481 SMB2_close_free(&rqst[2]);
2482 free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base);
2483 free_rsp_buf(resp_buftype[2], rsp_iov[2].iov_base);
2488 smb2_queryfs(const unsigned int xid, struct cifs_tcon *tcon,
2489 struct cifs_sb_info *cifs_sb, struct kstatfs *buf)
2491 struct smb2_query_info_rsp *rsp;
2492 struct smb2_fs_full_size_info *info = NULL;
2493 __le16 utf16_path = 0; /* Null - open root of share */
2494 struct kvec rsp_iov = {NULL, 0};
2495 int buftype = CIFS_NO_BUFFER;
2499 rc = smb2_query_info_compound(xid, tcon, &utf16_path,
2500 FILE_READ_ATTRIBUTES,
2501 FS_FULL_SIZE_INFORMATION,
2502 SMB2_O_INFO_FILESYSTEM,
2503 sizeof(struct smb2_fs_full_size_info),
2504 &rsp_iov, &buftype, cifs_sb);
2508 rsp = (struct smb2_query_info_rsp *)rsp_iov.iov_base;
2509 buf->f_type = SMB2_MAGIC_NUMBER;
2510 info = (struct smb2_fs_full_size_info *)(
2511 le16_to_cpu(rsp->OutputBufferOffset) + (char *)rsp);
2512 rc = smb2_validate_iov(le16_to_cpu(rsp->OutputBufferOffset),
2513 le32_to_cpu(rsp->OutputBufferLength),
2515 sizeof(struct smb2_fs_full_size_info));
2517 smb2_copy_fs_info_to_kstatfs(info, buf);
2520 free_rsp_buf(buftype, rsp_iov.iov_base);
2525 smb311_queryfs(const unsigned int xid, struct cifs_tcon *tcon,
2526 struct cifs_sb_info *cifs_sb, struct kstatfs *buf)
2529 __le16 srch_path = 0; /* Null - open root of share */
2530 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
2531 struct cifs_open_parms oparms;
2532 struct cifs_fid fid;
2534 if (!tcon->posix_extensions)
2535 return smb2_queryfs(xid, tcon, cifs_sb, buf);
2538 oparms.desired_access = FILE_READ_ATTRIBUTES;
2539 oparms.disposition = FILE_OPEN;
2540 oparms.create_options = cifs_create_options(cifs_sb, 0);
2542 oparms.reconnect = false;
2544 rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL, NULL);
2548 rc = SMB311_posix_qfs_info(xid, tcon, fid.persistent_fid,
2549 fid.volatile_fid, buf);
2550 buf->f_type = SMB2_MAGIC_NUMBER;
2551 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
2556 smb2_compare_fids(struct cifsFileInfo *ob1, struct cifsFileInfo *ob2)
2558 return ob1->fid.persistent_fid == ob2->fid.persistent_fid &&
2559 ob1->fid.volatile_fid == ob2->fid.volatile_fid;
2563 smb2_mand_lock(const unsigned int xid, struct cifsFileInfo *cfile, __u64 offset,
2564 __u64 length, __u32 type, int lock, int unlock, bool wait)
2566 if (unlock && !lock)
2567 type = SMB2_LOCKFLAG_UNLOCK;
2568 return SMB2_lock(xid, tlink_tcon(cfile->tlink),
2569 cfile->fid.persistent_fid, cfile->fid.volatile_fid,
2570 current->tgid, length, offset, type, wait);
2574 smb2_get_lease_key(struct inode *inode, struct cifs_fid *fid)
2576 memcpy(fid->lease_key, CIFS_I(inode)->lease_key, SMB2_LEASE_KEY_SIZE);
2580 smb2_set_lease_key(struct inode *inode, struct cifs_fid *fid)
2582 memcpy(CIFS_I(inode)->lease_key, fid->lease_key, SMB2_LEASE_KEY_SIZE);
2586 smb2_new_lease_key(struct cifs_fid *fid)
2588 generate_random_uuid(fid->lease_key);
2592 smb2_get_dfs_refer(const unsigned int xid, struct cifs_ses *ses,
2593 const char *search_name,
2594 struct dfs_info3_param **target_nodes,
2595 unsigned int *num_of_nodes,
2596 const struct nls_table *nls_codepage, int remap)
2599 __le16 *utf16_path = NULL;
2600 int utf16_path_len = 0;
2601 struct cifs_tcon *tcon;
2602 struct fsctl_get_dfs_referral_req *dfs_req = NULL;
2603 struct get_dfs_referral_rsp *dfs_rsp = NULL;
2604 u32 dfs_req_size = 0, dfs_rsp_size = 0;
2606 cifs_dbg(FYI, "%s: path: %s\n", __func__, search_name);
2609 * Try to use the IPC tcon, otherwise just use any
2611 tcon = ses->tcon_ipc;
2613 spin_lock(&cifs_tcp_ses_lock);
2614 tcon = list_first_entry_or_null(&ses->tcon_list,
2619 spin_unlock(&cifs_tcp_ses_lock);
2623 cifs_dbg(VFS, "session %p has no tcon available for a dfs referral request\n",
2629 utf16_path = cifs_strndup_to_utf16(search_name, PATH_MAX,
2631 nls_codepage, remap);
2637 dfs_req_size = sizeof(*dfs_req) + utf16_path_len;
2638 dfs_req = kzalloc(dfs_req_size, GFP_KERNEL);
2644 /* Highest DFS referral version understood */
2645 dfs_req->MaxReferralLevel = DFS_VERSION;
2647 /* Path to resolve in an UTF-16 null-terminated string */
2648 memcpy(dfs_req->RequestFileName, utf16_path, utf16_path_len);
2651 rc = SMB2_ioctl(xid, tcon, NO_FILE_ID, NO_FILE_ID,
2652 FSCTL_DFS_GET_REFERRALS,
2653 true /* is_fsctl */,
2654 (char *)dfs_req, dfs_req_size, CIFSMaxBufSize,
2655 (char **)&dfs_rsp, &dfs_rsp_size);
2656 } while (rc == -EAGAIN);
2659 if ((rc != -ENOENT) && (rc != -EOPNOTSUPP))
2660 cifs_tcon_dbg(VFS, "ioctl error in %s rc=%d\n", __func__, rc);
2664 rc = parse_dfs_referrals(dfs_rsp, dfs_rsp_size,
2665 num_of_nodes, target_nodes,
2666 nls_codepage, remap, search_name,
2667 true /* is_unicode */);
2669 cifs_tcon_dbg(VFS, "parse error in %s rc=%d\n", __func__, rc);
2674 if (tcon && !tcon->ipc) {
2675 /* ipc tcons are not refcounted */
2676 spin_lock(&cifs_tcp_ses_lock);
2678 spin_unlock(&cifs_tcp_ses_lock);
2687 parse_reparse_posix(struct reparse_posix_data *symlink_buf,
2688 u32 plen, char **target_path,
2689 struct cifs_sb_info *cifs_sb)
2693 /* See MS-FSCC 2.1.2.6 for the 'NFS' style reparse tags */
2694 len = le16_to_cpu(symlink_buf->ReparseDataLength);
2696 if (le64_to_cpu(symlink_buf->InodeType) != NFS_SPECFILE_LNK) {
2697 cifs_dbg(VFS, "%lld not a supported symlink type\n",
2698 le64_to_cpu(symlink_buf->InodeType));
2702 *target_path = cifs_strndup_from_utf16(
2703 symlink_buf->PathBuffer,
2704 len, true, cifs_sb->local_nls);
2705 if (!(*target_path))
2708 convert_delimiter(*target_path, '/');
2709 cifs_dbg(FYI, "%s: target path: %s\n", __func__, *target_path);
2715 parse_reparse_symlink(struct reparse_symlink_data_buffer *symlink_buf,
2716 u32 plen, char **target_path,
2717 struct cifs_sb_info *cifs_sb)
2719 unsigned int sub_len;
2720 unsigned int sub_offset;
2722 /* We handle Symbolic Link reparse tag here. See: MS-FSCC 2.1.2.4 */
2724 sub_offset = le16_to_cpu(symlink_buf->SubstituteNameOffset);
2725 sub_len = le16_to_cpu(symlink_buf->SubstituteNameLength);
2726 if (sub_offset + 20 > plen ||
2727 sub_offset + sub_len + 20 > plen) {
2728 cifs_dbg(VFS, "srv returned malformed symlink buffer\n");
2732 *target_path = cifs_strndup_from_utf16(
2733 symlink_buf->PathBuffer + sub_offset,
2734 sub_len, true, cifs_sb->local_nls);
2735 if (!(*target_path))
2738 convert_delimiter(*target_path, '/');
2739 cifs_dbg(FYI, "%s: target path: %s\n", __func__, *target_path);
2745 parse_reparse_point(struct reparse_data_buffer *buf,
2746 u32 plen, char **target_path,
2747 struct cifs_sb_info *cifs_sb)
2749 if (plen < sizeof(struct reparse_data_buffer)) {
2750 cifs_dbg(VFS, "reparse buffer is too small. Must be "
2751 "at least 8 bytes but was %d\n", plen);
2755 if (plen < le16_to_cpu(buf->ReparseDataLength) +
2756 sizeof(struct reparse_data_buffer)) {
2757 cifs_dbg(VFS, "srv returned invalid reparse buf "
2758 "length: %d\n", plen);
2762 /* See MS-FSCC 2.1.2 */
2763 switch (le32_to_cpu(buf->ReparseTag)) {
2764 case IO_REPARSE_TAG_NFS:
2765 return parse_reparse_posix(
2766 (struct reparse_posix_data *)buf,
2767 plen, target_path, cifs_sb);
2768 case IO_REPARSE_TAG_SYMLINK:
2769 return parse_reparse_symlink(
2770 (struct reparse_symlink_data_buffer *)buf,
2771 plen, target_path, cifs_sb);
2773 cifs_dbg(VFS, "srv returned unknown symlink buffer "
2774 "tag:0x%08x\n", le32_to_cpu(buf->ReparseTag));
2779 #define SMB2_SYMLINK_STRUCT_SIZE \
2780 (sizeof(struct smb2_err_rsp) - 1 + sizeof(struct smb2_symlink_err_rsp))
2783 smb2_query_symlink(const unsigned int xid, struct cifs_tcon *tcon,
2784 struct cifs_sb_info *cifs_sb, const char *full_path,
2785 char **target_path, bool is_reparse_point)
2788 __le16 *utf16_path = NULL;
2789 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
2790 struct cifs_open_parms oparms;
2791 struct cifs_fid fid;
2792 struct kvec err_iov = {NULL, 0};
2793 struct smb2_err_rsp *err_buf = NULL;
2794 struct smb2_symlink_err_rsp *symlink;
2795 unsigned int sub_len;
2796 unsigned int sub_offset;
2797 unsigned int print_len;
2798 unsigned int print_offset;
2800 struct smb_rqst rqst[3];
2801 int resp_buftype[3];
2802 struct kvec rsp_iov[3];
2803 struct kvec open_iov[SMB2_CREATE_IOV_SIZE];
2804 struct kvec io_iov[SMB2_IOCTL_IOV_SIZE];
2805 struct kvec close_iov[1];
2806 struct smb2_create_rsp *create_rsp;
2807 struct smb2_ioctl_rsp *ioctl_rsp;
2808 struct reparse_data_buffer *reparse_buf;
2809 int create_options = is_reparse_point ? OPEN_REPARSE_POINT : 0;
2812 cifs_dbg(FYI, "%s: path: %s\n", __func__, full_path);
2814 *target_path = NULL;
2816 if (smb3_encryption_required(tcon))
2817 flags |= CIFS_TRANSFORM_REQ;
2819 memset(rqst, 0, sizeof(rqst));
2820 resp_buftype[0] = resp_buftype[1] = resp_buftype[2] = CIFS_NO_BUFFER;
2821 memset(rsp_iov, 0, sizeof(rsp_iov));
2823 utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb);
2828 memset(&open_iov, 0, sizeof(open_iov));
2829 rqst[0].rq_iov = open_iov;
2830 rqst[0].rq_nvec = SMB2_CREATE_IOV_SIZE;
2832 memset(&oparms, 0, sizeof(oparms));
2834 oparms.desired_access = FILE_READ_ATTRIBUTES;
2835 oparms.disposition = FILE_OPEN;
2836 oparms.create_options = cifs_create_options(cifs_sb, create_options);
2838 oparms.reconnect = false;
2840 rc = SMB2_open_init(tcon, &rqst[0], &oplock, &oparms, utf16_path);
2843 smb2_set_next_command(tcon, &rqst[0]);
2847 memset(&io_iov, 0, sizeof(io_iov));
2848 rqst[1].rq_iov = io_iov;
2849 rqst[1].rq_nvec = SMB2_IOCTL_IOV_SIZE;
2851 rc = SMB2_ioctl_init(tcon, &rqst[1], fid.persistent_fid,
2852 fid.volatile_fid, FSCTL_GET_REPARSE_POINT,
2853 true /* is_fctl */, NULL, 0,
2855 MAX_SMB2_CREATE_RESPONSE_SIZE -
2856 MAX_SMB2_CLOSE_RESPONSE_SIZE);
2860 smb2_set_next_command(tcon, &rqst[1]);
2861 smb2_set_related(&rqst[1]);
2865 memset(&close_iov, 0, sizeof(close_iov));
2866 rqst[2].rq_iov = close_iov;
2867 rqst[2].rq_nvec = 1;
2869 rc = SMB2_close_init(tcon, &rqst[2], COMPOUND_FID, COMPOUND_FID, false);
2873 smb2_set_related(&rqst[2]);
2875 rc = compound_send_recv(xid, tcon->ses, flags, 3, rqst,
2876 resp_buftype, rsp_iov);
2878 create_rsp = rsp_iov[0].iov_base;
2879 if (create_rsp && create_rsp->sync_hdr.Status)
2880 err_iov = rsp_iov[0];
2881 ioctl_rsp = rsp_iov[1].iov_base;
2884 * Open was successful and we got an ioctl response.
2886 if ((rc == 0) && (is_reparse_point)) {
2887 /* See MS-FSCC 2.3.23 */
2889 reparse_buf = (struct reparse_data_buffer *)
2890 ((char *)ioctl_rsp +
2891 le32_to_cpu(ioctl_rsp->OutputOffset));
2892 plen = le32_to_cpu(ioctl_rsp->OutputCount);
2894 if (plen + le32_to_cpu(ioctl_rsp->OutputOffset) >
2895 rsp_iov[1].iov_len) {
2896 cifs_tcon_dbg(VFS, "srv returned invalid ioctl len: %d\n",
2902 rc = parse_reparse_point(reparse_buf, plen, target_path,
2907 if (!rc || !err_iov.iov_base) {
2912 err_buf = err_iov.iov_base;
2913 if (le32_to_cpu(err_buf->ByteCount) < sizeof(struct smb2_symlink_err_rsp) ||
2914 err_iov.iov_len < SMB2_SYMLINK_STRUCT_SIZE) {
2919 symlink = (struct smb2_symlink_err_rsp *)err_buf->ErrorData;
2920 if (le32_to_cpu(symlink->SymLinkErrorTag) != SYMLINK_ERROR_TAG ||
2921 le32_to_cpu(symlink->ReparseTag) != IO_REPARSE_TAG_SYMLINK) {
2926 /* open must fail on symlink - reset rc */
2928 sub_len = le16_to_cpu(symlink->SubstituteNameLength);
2929 sub_offset = le16_to_cpu(symlink->SubstituteNameOffset);
2930 print_len = le16_to_cpu(symlink->PrintNameLength);
2931 print_offset = le16_to_cpu(symlink->PrintNameOffset);
2933 if (err_iov.iov_len < SMB2_SYMLINK_STRUCT_SIZE + sub_offset + sub_len) {
2938 if (err_iov.iov_len <
2939 SMB2_SYMLINK_STRUCT_SIZE + print_offset + print_len) {
2944 *target_path = cifs_strndup_from_utf16(
2945 (char *)symlink->PathBuffer + sub_offset,
2946 sub_len, true, cifs_sb->local_nls);
2947 if (!(*target_path)) {
2951 convert_delimiter(*target_path, '/');
2952 cifs_dbg(FYI, "%s: target path: %s\n", __func__, *target_path);
2955 cifs_dbg(FYI, "query symlink rc %d\n", rc);
2957 SMB2_open_free(&rqst[0]);
2958 SMB2_ioctl_free(&rqst[1]);
2959 SMB2_close_free(&rqst[2]);
2960 free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base);
2961 free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base);
2962 free_rsp_buf(resp_buftype[2], rsp_iov[2].iov_base);
2966 static struct cifs_ntsd *
2967 get_smb2_acl_by_fid(struct cifs_sb_info *cifs_sb,
2968 const struct cifs_fid *cifsfid, u32 *pacllen)
2970 struct cifs_ntsd *pntsd = NULL;
2972 int rc = -EOPNOTSUPP;
2973 struct tcon_link *tlink = cifs_sb_tlink(cifs_sb);
2976 return ERR_CAST(tlink);
2979 cifs_dbg(FYI, "trying to get acl\n");
2981 rc = SMB2_query_acl(xid, tlink_tcon(tlink), cifsfid->persistent_fid,
2982 cifsfid->volatile_fid, (void **)&pntsd, pacllen);
2985 cifs_put_tlink(tlink);
2987 cifs_dbg(FYI, "%s: rc = %d ACL len %d\n", __func__, rc, *pacllen);
2994 static struct cifs_ntsd *
2995 get_smb2_acl_by_path(struct cifs_sb_info *cifs_sb,
2996 const char *path, u32 *pacllen)
2998 struct cifs_ntsd *pntsd = NULL;
2999 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
3002 struct cifs_tcon *tcon;
3003 struct tcon_link *tlink = cifs_sb_tlink(cifs_sb);
3004 struct cifs_fid fid;
3005 struct cifs_open_parms oparms;
3008 cifs_dbg(FYI, "get smb3 acl for path %s\n", path);
3010 return ERR_CAST(tlink);
3012 tcon = tlink_tcon(tlink);
3015 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
3023 oparms.desired_access = READ_CONTROL;
3024 oparms.disposition = FILE_OPEN;
3025 oparms.create_options = cifs_create_options(cifs_sb, 0);
3027 oparms.reconnect = false;
3029 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL, NULL);
3032 rc = SMB2_query_acl(xid, tlink_tcon(tlink), fid.persistent_fid,
3033 fid.volatile_fid, (void **)&pntsd, pacllen);
3034 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
3037 cifs_put_tlink(tlink);
3040 cifs_dbg(FYI, "%s: rc = %d ACL len %d\n", __func__, rc, *pacllen);
3047 set_smb2_acl(struct cifs_ntsd *pnntsd, __u32 acllen,
3048 struct inode *inode, const char *path, int aclflag)
3050 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
3052 int rc, access_flags = 0;
3053 struct cifs_tcon *tcon;
3054 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
3055 struct tcon_link *tlink = cifs_sb_tlink(cifs_sb);
3056 struct cifs_fid fid;
3057 struct cifs_open_parms oparms;
3060 cifs_dbg(FYI, "set smb3 acl for path %s\n", path);
3062 return PTR_ERR(tlink);
3064 tcon = tlink_tcon(tlink);
3067 if (aclflag == CIFS_ACL_OWNER || aclflag == CIFS_ACL_GROUP)
3068 access_flags = WRITE_OWNER;
3070 access_flags = WRITE_DAC;
3072 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
3080 oparms.desired_access = access_flags;
3081 oparms.create_options = cifs_create_options(cifs_sb, 0);
3082 oparms.disposition = FILE_OPEN;
3085 oparms.reconnect = false;
3087 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL, NULL);
3090 rc = SMB2_set_acl(xid, tlink_tcon(tlink), fid.persistent_fid,
3091 fid.volatile_fid, pnntsd, acllen, aclflag);
3092 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
3095 cifs_put_tlink(tlink);
3100 /* Retrieve an ACL from the server */
3101 static struct cifs_ntsd *
3102 get_smb2_acl(struct cifs_sb_info *cifs_sb,
3103 struct inode *inode, const char *path,
3106 struct cifs_ntsd *pntsd = NULL;
3107 struct cifsFileInfo *open_file = NULL;
3110 open_file = find_readable_file(CIFS_I(inode), true);
3112 return get_smb2_acl_by_path(cifs_sb, path, pacllen);
3114 pntsd = get_smb2_acl_by_fid(cifs_sb, &open_file->fid, pacllen);
3115 cifsFileInfo_put(open_file);
3119 static long smb3_zero_range(struct file *file, struct cifs_tcon *tcon,
3120 loff_t offset, loff_t len, bool keep_size)
3122 struct cifs_ses *ses = tcon->ses;
3123 struct inode *inode;
3124 struct cifsInodeInfo *cifsi;
3125 struct cifsFileInfo *cfile = file->private_data;
3126 struct file_zero_data_information fsctl_buf;
3133 inode = d_inode(cfile->dentry);
3134 cifsi = CIFS_I(inode);
3136 trace_smb3_zero_enter(xid, cfile->fid.persistent_fid, tcon->tid,
3137 ses->Suid, offset, len);
3140 /* if file not oplocked can't be sure whether asking to extend size */
3141 if (!CIFS_CACHE_READ(cifsi))
3142 if (keep_size == false) {
3144 trace_smb3_zero_err(xid, cfile->fid.persistent_fid,
3145 tcon->tid, ses->Suid, offset, len, rc);
3150 cifs_dbg(FYI, "Offset %lld len %lld\n", offset, len);
3152 fsctl_buf.FileOffset = cpu_to_le64(offset);
3153 fsctl_buf.BeyondFinalZero = cpu_to_le64(offset + len);
3155 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
3156 cfile->fid.volatile_fid, FSCTL_SET_ZERO_DATA, true,
3158 sizeof(struct file_zero_data_information),
3161 goto zero_range_exit;
3164 * do we also need to change the size of the file?
3166 if (keep_size == false && i_size_read(inode) < offset + len) {
3167 eof = cpu_to_le64(offset + len);
3168 rc = SMB2_set_eof(xid, tcon, cfile->fid.persistent_fid,
3169 cfile->fid.volatile_fid, cfile->pid, &eof);
3175 trace_smb3_zero_err(xid, cfile->fid.persistent_fid, tcon->tid,
3176 ses->Suid, offset, len, rc);
3178 trace_smb3_zero_done(xid, cfile->fid.persistent_fid, tcon->tid,
3179 ses->Suid, offset, len);
3183 static long smb3_punch_hole(struct file *file, struct cifs_tcon *tcon,
3184 loff_t offset, loff_t len)
3186 struct inode *inode;
3187 struct cifsFileInfo *cfile = file->private_data;
3188 struct file_zero_data_information fsctl_buf;
3191 __u8 set_sparse = 1;
3195 inode = d_inode(cfile->dentry);
3197 /* Need to make file sparse, if not already, before freeing range. */
3198 /* Consider adding equivalent for compressed since it could also work */
3199 if (!smb2_set_sparse(xid, tcon, cfile, inode, set_sparse)) {
3205 cifs_dbg(FYI, "Offset %lld len %lld\n", offset, len);
3207 fsctl_buf.FileOffset = cpu_to_le64(offset);
3208 fsctl_buf.BeyondFinalZero = cpu_to_le64(offset + len);
3210 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
3211 cfile->fid.volatile_fid, FSCTL_SET_ZERO_DATA,
3212 true /* is_fctl */, (char *)&fsctl_buf,
3213 sizeof(struct file_zero_data_information),
3214 CIFSMaxBufSize, NULL, NULL);
3219 static long smb3_simple_falloc(struct file *file, struct cifs_tcon *tcon,
3220 loff_t off, loff_t len, bool keep_size)
3222 struct inode *inode;
3223 struct cifsInodeInfo *cifsi;
3224 struct cifsFileInfo *cfile = file->private_data;
3225 long rc = -EOPNOTSUPP;
3231 inode = d_inode(cfile->dentry);
3232 cifsi = CIFS_I(inode);
3234 trace_smb3_falloc_enter(xid, cfile->fid.persistent_fid, tcon->tid,
3235 tcon->ses->Suid, off, len);
3236 /* if file not oplocked can't be sure whether asking to extend size */
3237 if (!CIFS_CACHE_READ(cifsi))
3238 if (keep_size == false) {
3239 trace_smb3_falloc_err(xid, cfile->fid.persistent_fid,
3240 tcon->tid, tcon->ses->Suid, off, len, rc);
3246 * Extending the file
3248 if ((keep_size == false) && i_size_read(inode) < off + len) {
3249 if ((cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) == 0)
3250 smb2_set_sparse(xid, tcon, cfile, inode, false);
3252 eof = cpu_to_le64(off + len);
3253 rc = SMB2_set_eof(xid, tcon, cfile->fid.persistent_fid,
3254 cfile->fid.volatile_fid, cfile->pid, &eof);
3256 cifsi->server_eof = off + len;
3257 cifs_setsize(inode, off + len);
3258 cifs_truncate_page(inode->i_mapping, inode->i_size);
3259 truncate_setsize(inode, off + len);
3265 * Files are non-sparse by default so falloc may be a no-op
3266 * Must check if file sparse. If not sparse, and since we are not
3267 * extending then no need to do anything since file already allocated
3269 if ((cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) == 0) {
3274 if ((keep_size == true) || (i_size_read(inode) >= off + len)) {
3276 * Check if falloc starts within first few pages of file
3277 * and ends within a few pages of the end of file to
3278 * ensure that most of file is being forced to be
3279 * fallocated now. If so then setting whole file sparse
3280 * ie potentially making a few extra pages at the beginning
3281 * or end of the file non-sparse via set_sparse is harmless.
3283 if ((off > 8192) || (off + len + 8192 < i_size_read(inode))) {
3289 smb2_set_sparse(xid, tcon, cfile, inode, false);
3294 trace_smb3_falloc_err(xid, cfile->fid.persistent_fid, tcon->tid,
3295 tcon->ses->Suid, off, len, rc);
3297 trace_smb3_falloc_done(xid, cfile->fid.persistent_fid, tcon->tid,
3298 tcon->ses->Suid, off, len);
3304 static loff_t smb3_llseek(struct file *file, struct cifs_tcon *tcon, loff_t offset, int whence)
3306 struct cifsFileInfo *wrcfile, *cfile = file->private_data;
3307 struct cifsInodeInfo *cifsi;
3308 struct inode *inode;
3310 struct file_allocated_range_buffer in_data, *out_data = NULL;
3314 if (whence != SEEK_HOLE && whence != SEEK_DATA)
3315 return generic_file_llseek(file, offset, whence);
3317 inode = d_inode(cfile->dentry);
3318 cifsi = CIFS_I(inode);
3320 if (offset < 0 || offset >= i_size_read(inode))
3325 * We need to be sure that all dirty pages are written as they
3326 * might fill holes on the server.
3327 * Note that we also MUST flush any written pages since at least
3328 * some servers (Windows2016) will not reflect recent writes in
3329 * QUERY_ALLOCATED_RANGES until SMB2_flush is called.
3331 wrcfile = find_writable_file(cifsi, FIND_WR_ANY);
3333 filemap_write_and_wait(inode->i_mapping);
3334 smb2_flush_file(xid, tcon, &wrcfile->fid);
3335 cifsFileInfo_put(wrcfile);
3338 if (!(cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE)) {
3339 if (whence == SEEK_HOLE)
3340 offset = i_size_read(inode);
3344 in_data.file_offset = cpu_to_le64(offset);
3345 in_data.length = cpu_to_le64(i_size_read(inode));
3347 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
3348 cfile->fid.volatile_fid,
3349 FSCTL_QUERY_ALLOCATED_RANGES, true,
3350 (char *)&in_data, sizeof(in_data),
3351 sizeof(struct file_allocated_range_buffer),
3352 (char **)&out_data, &out_data_len);
3358 if (whence == SEEK_HOLE && out_data_len == 0)
3361 if (whence == SEEK_DATA && out_data_len == 0) {
3366 if (out_data_len < sizeof(struct file_allocated_range_buffer)) {
3370 if (whence == SEEK_DATA) {
3371 offset = le64_to_cpu(out_data->file_offset);
3374 if (offset < le64_to_cpu(out_data->file_offset))
3377 offset = le64_to_cpu(out_data->file_offset) + le64_to_cpu(out_data->length);
3383 return vfs_setpos(file, offset, inode->i_sb->s_maxbytes);
3388 static int smb3_fiemap(struct cifs_tcon *tcon,
3389 struct cifsFileInfo *cfile,
3390 struct fiemap_extent_info *fei, u64 start, u64 len)
3393 struct file_allocated_range_buffer in_data, *out_data;
3395 int i, num, rc, flags, last_blob;
3398 if (fiemap_check_flags(fei, FIEMAP_FLAG_SYNC))
3403 in_data.file_offset = cpu_to_le64(start);
3404 in_data.length = cpu_to_le64(len);
3406 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
3407 cfile->fid.volatile_fid,
3408 FSCTL_QUERY_ALLOCATED_RANGES, true,
3409 (char *)&in_data, sizeof(in_data),
3410 1024 * sizeof(struct file_allocated_range_buffer),
3411 (char **)&out_data, &out_data_len);
3420 if (out_data_len < sizeof(struct file_allocated_range_buffer)) {
3424 if (out_data_len % sizeof(struct file_allocated_range_buffer)) {
3429 num = out_data_len / sizeof(struct file_allocated_range_buffer);
3430 for (i = 0; i < num; i++) {
3432 if (i == num - 1 && last_blob)
3433 flags |= FIEMAP_EXTENT_LAST;
3435 rc = fiemap_fill_next_extent(fei,
3436 le64_to_cpu(out_data[i].file_offset),
3437 le64_to_cpu(out_data[i].file_offset),
3438 le64_to_cpu(out_data[i].length),
3449 next = le64_to_cpu(out_data[num - 1].file_offset) +
3450 le64_to_cpu(out_data[num - 1].length);
3451 len = len - (next - start);
3462 static long smb3_fallocate(struct file *file, struct cifs_tcon *tcon, int mode,
3463 loff_t off, loff_t len)
3465 /* KEEP_SIZE already checked for by do_fallocate */
3466 if (mode & FALLOC_FL_PUNCH_HOLE)
3467 return smb3_punch_hole(file, tcon, off, len);
3468 else if (mode & FALLOC_FL_ZERO_RANGE) {
3469 if (mode & FALLOC_FL_KEEP_SIZE)
3470 return smb3_zero_range(file, tcon, off, len, true);
3471 return smb3_zero_range(file, tcon, off, len, false);
3472 } else if (mode == FALLOC_FL_KEEP_SIZE)
3473 return smb3_simple_falloc(file, tcon, off, len, true);
3475 return smb3_simple_falloc(file, tcon, off, len, false);
3481 smb2_downgrade_oplock(struct TCP_Server_Info *server,
3482 struct cifsInodeInfo *cinode, __u32 oplock,
3483 unsigned int epoch, bool *purge_cache)
3485 server->ops->set_oplock_level(cinode, oplock, 0, NULL);
3489 smb21_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
3490 unsigned int epoch, bool *purge_cache);
3493 smb3_downgrade_oplock(struct TCP_Server_Info *server,
3494 struct cifsInodeInfo *cinode, __u32 oplock,
3495 unsigned int epoch, bool *purge_cache)
3497 unsigned int old_state = cinode->oplock;
3498 unsigned int old_epoch = cinode->epoch;
3499 unsigned int new_state;
3501 if (epoch > old_epoch) {
3502 smb21_set_oplock_level(cinode, oplock, 0, NULL);
3503 cinode->epoch = epoch;
3506 new_state = cinode->oplock;
3507 *purge_cache = false;
3509 if ((old_state & CIFS_CACHE_READ_FLG) != 0 &&
3510 (new_state & CIFS_CACHE_READ_FLG) == 0)
3511 *purge_cache = true;
3512 else if (old_state == new_state && (epoch - old_epoch > 1))
3513 *purge_cache = true;
3517 smb2_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
3518 unsigned int epoch, bool *purge_cache)
3521 if (oplock == SMB2_OPLOCK_LEVEL_NOCHANGE)
3523 if (oplock == SMB2_OPLOCK_LEVEL_BATCH) {
3524 cinode->oplock = CIFS_CACHE_RHW_FLG;
3525 cifs_dbg(FYI, "Batch Oplock granted on inode %p\n",
3526 &cinode->vfs_inode);
3527 } else if (oplock == SMB2_OPLOCK_LEVEL_EXCLUSIVE) {
3528 cinode->oplock = CIFS_CACHE_RW_FLG;
3529 cifs_dbg(FYI, "Exclusive Oplock granted on inode %p\n",
3530 &cinode->vfs_inode);
3531 } else if (oplock == SMB2_OPLOCK_LEVEL_II) {
3532 cinode->oplock = CIFS_CACHE_READ_FLG;
3533 cifs_dbg(FYI, "Level II Oplock granted on inode %p\n",
3534 &cinode->vfs_inode);
3540 smb21_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
3541 unsigned int epoch, bool *purge_cache)
3543 char message[5] = {0};
3544 unsigned int new_oplock = 0;
3547 if (oplock == SMB2_OPLOCK_LEVEL_NOCHANGE)
3550 /* Check if the server granted an oplock rather than a lease */
3551 if (oplock & SMB2_OPLOCK_LEVEL_EXCLUSIVE)
3552 return smb2_set_oplock_level(cinode, oplock, epoch,
3555 if (oplock & SMB2_LEASE_READ_CACHING_HE) {
3556 new_oplock |= CIFS_CACHE_READ_FLG;
3557 strcat(message, "R");
3559 if (oplock & SMB2_LEASE_HANDLE_CACHING_HE) {
3560 new_oplock |= CIFS_CACHE_HANDLE_FLG;
3561 strcat(message, "H");
3563 if (oplock & SMB2_LEASE_WRITE_CACHING_HE) {
3564 new_oplock |= CIFS_CACHE_WRITE_FLG;
3565 strcat(message, "W");
3568 strncpy(message, "None", sizeof(message));
3570 cinode->oplock = new_oplock;
3571 cifs_dbg(FYI, "%s Lease granted on inode %p\n", message,
3572 &cinode->vfs_inode);
3576 smb3_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
3577 unsigned int epoch, bool *purge_cache)
3579 unsigned int old_oplock = cinode->oplock;
3581 smb21_set_oplock_level(cinode, oplock, epoch, purge_cache);
3584 *purge_cache = false;
3585 if (old_oplock == CIFS_CACHE_READ_FLG) {
3586 if (cinode->oplock == CIFS_CACHE_READ_FLG &&
3587 (epoch - cinode->epoch > 0))
3588 *purge_cache = true;
3589 else if (cinode->oplock == CIFS_CACHE_RH_FLG &&
3590 (epoch - cinode->epoch > 1))
3591 *purge_cache = true;
3592 else if (cinode->oplock == CIFS_CACHE_RHW_FLG &&
3593 (epoch - cinode->epoch > 1))
3594 *purge_cache = true;
3595 else if (cinode->oplock == 0 &&
3596 (epoch - cinode->epoch > 0))
3597 *purge_cache = true;
3598 } else if (old_oplock == CIFS_CACHE_RH_FLG) {
3599 if (cinode->oplock == CIFS_CACHE_RH_FLG &&
3600 (epoch - cinode->epoch > 0))
3601 *purge_cache = true;
3602 else if (cinode->oplock == CIFS_CACHE_RHW_FLG &&
3603 (epoch - cinode->epoch > 1))
3604 *purge_cache = true;
3606 cinode->epoch = epoch;
3611 smb2_is_read_op(__u32 oplock)
3613 return oplock == SMB2_OPLOCK_LEVEL_II;
3617 smb21_is_read_op(__u32 oplock)
3619 return (oplock & SMB2_LEASE_READ_CACHING_HE) &&
3620 !(oplock & SMB2_LEASE_WRITE_CACHING_HE);
3624 map_oplock_to_lease(u8 oplock)
3626 if (oplock == SMB2_OPLOCK_LEVEL_EXCLUSIVE)
3627 return SMB2_LEASE_WRITE_CACHING | SMB2_LEASE_READ_CACHING;
3628 else if (oplock == SMB2_OPLOCK_LEVEL_II)
3629 return SMB2_LEASE_READ_CACHING;
3630 else if (oplock == SMB2_OPLOCK_LEVEL_BATCH)
3631 return SMB2_LEASE_HANDLE_CACHING | SMB2_LEASE_READ_CACHING |
3632 SMB2_LEASE_WRITE_CACHING;
3637 smb2_create_lease_buf(u8 *lease_key, u8 oplock)
3639 struct create_lease *buf;
3641 buf = kzalloc(sizeof(struct create_lease), GFP_KERNEL);
3645 memcpy(&buf->lcontext.LeaseKey, lease_key, SMB2_LEASE_KEY_SIZE);
3646 buf->lcontext.LeaseState = map_oplock_to_lease(oplock);
3648 buf->ccontext.DataOffset = cpu_to_le16(offsetof
3649 (struct create_lease, lcontext));
3650 buf->ccontext.DataLength = cpu_to_le32(sizeof(struct lease_context));
3651 buf->ccontext.NameOffset = cpu_to_le16(offsetof
3652 (struct create_lease, Name));
3653 buf->ccontext.NameLength = cpu_to_le16(4);
3654 /* SMB2_CREATE_REQUEST_LEASE is "RqLs" */
3663 smb3_create_lease_buf(u8 *lease_key, u8 oplock)
3665 struct create_lease_v2 *buf;
3667 buf = kzalloc(sizeof(struct create_lease_v2), GFP_KERNEL);
3671 memcpy(&buf->lcontext.LeaseKey, lease_key, SMB2_LEASE_KEY_SIZE);
3672 buf->lcontext.LeaseState = map_oplock_to_lease(oplock);
3674 buf->ccontext.DataOffset = cpu_to_le16(offsetof
3675 (struct create_lease_v2, lcontext));
3676 buf->ccontext.DataLength = cpu_to_le32(sizeof(struct lease_context_v2));
3677 buf->ccontext.NameOffset = cpu_to_le16(offsetof
3678 (struct create_lease_v2, Name));
3679 buf->ccontext.NameLength = cpu_to_le16(4);
3680 /* SMB2_CREATE_REQUEST_LEASE is "RqLs" */
3689 smb2_parse_lease_buf(void *buf, unsigned int *epoch, char *lease_key)
3691 struct create_lease *lc = (struct create_lease *)buf;
3693 *epoch = 0; /* not used */
3694 if (lc->lcontext.LeaseFlags & SMB2_LEASE_FLAG_BREAK_IN_PROGRESS)
3695 return SMB2_OPLOCK_LEVEL_NOCHANGE;
3696 return le32_to_cpu(lc->lcontext.LeaseState);
3700 smb3_parse_lease_buf(void *buf, unsigned int *epoch, char *lease_key)
3702 struct create_lease_v2 *lc = (struct create_lease_v2 *)buf;
3704 *epoch = le16_to_cpu(lc->lcontext.Epoch);
3705 if (lc->lcontext.LeaseFlags & SMB2_LEASE_FLAG_BREAK_IN_PROGRESS)
3706 return SMB2_OPLOCK_LEVEL_NOCHANGE;
3708 memcpy(lease_key, &lc->lcontext.LeaseKey, SMB2_LEASE_KEY_SIZE);
3709 return le32_to_cpu(lc->lcontext.LeaseState);
3713 smb2_wp_retry_size(struct inode *inode)
3715 return min_t(unsigned int, CIFS_SB(inode->i_sb)->wsize,
3716 SMB2_MAX_BUFFER_SIZE);
3720 smb2_dir_needs_close(struct cifsFileInfo *cfile)
3722 return !cfile->invalidHandle;
3726 fill_transform_hdr(struct smb2_transform_hdr *tr_hdr, unsigned int orig_len,
3727 struct smb_rqst *old_rq, __le16 cipher_type)
3729 struct smb2_sync_hdr *shdr =
3730 (struct smb2_sync_hdr *)old_rq->rq_iov[0].iov_base;
3732 memset(tr_hdr, 0, sizeof(struct smb2_transform_hdr));
3733 tr_hdr->ProtocolId = SMB2_TRANSFORM_PROTO_NUM;
3734 tr_hdr->OriginalMessageSize = cpu_to_le32(orig_len);
3735 tr_hdr->Flags = cpu_to_le16(0x01);
3736 if (cipher_type == SMB2_ENCRYPTION_AES128_GCM)
3737 get_random_bytes(&tr_hdr->Nonce, SMB3_AES128GCM_NONCE);
3739 get_random_bytes(&tr_hdr->Nonce, SMB3_AES128CCM_NONCE);
3740 memcpy(&tr_hdr->SessionId, &shdr->SessionId, 8);
3743 /* We can not use the normal sg_set_buf() as we will sometimes pass a
3744 * stack object as buf.
3746 static inline void smb2_sg_set_buf(struct scatterlist *sg, const void *buf,
3747 unsigned int buflen)
3751 * VMAP_STACK (at least) puts stack into the vmalloc address space
3753 if (is_vmalloc_addr(buf))
3754 addr = vmalloc_to_page(buf);
3756 addr = virt_to_page(buf);
3757 sg_set_page(sg, addr, buflen, offset_in_page(buf));
3760 /* Assumes the first rqst has a transform header as the first iov.
3762 * rqst[0].rq_iov[0] is transform header
3763 * rqst[0].rq_iov[1+] data to be encrypted/decrypted
3764 * rqst[1+].rq_iov[0+] data to be encrypted/decrypted
3766 static struct scatterlist *
3767 init_sg(int num_rqst, struct smb_rqst *rqst, u8 *sign)
3769 unsigned int sg_len;
3770 struct scatterlist *sg;
3773 unsigned int idx = 0;
3777 for (i = 0; i < num_rqst; i++)
3778 sg_len += rqst[i].rq_nvec + rqst[i].rq_npages;
3780 sg = kmalloc_array(sg_len, sizeof(struct scatterlist), GFP_KERNEL);
3784 sg_init_table(sg, sg_len);
3785 for (i = 0; i < num_rqst; i++) {
3786 for (j = 0; j < rqst[i].rq_nvec; j++) {
3788 * The first rqst has a transform header where the
3789 * first 20 bytes are not part of the encrypted blob
3791 skip = (i == 0) && (j == 0) ? 20 : 0;
3792 smb2_sg_set_buf(&sg[idx++],
3793 rqst[i].rq_iov[j].iov_base + skip,
3794 rqst[i].rq_iov[j].iov_len - skip);
3797 for (j = 0; j < rqst[i].rq_npages; j++) {
3798 unsigned int len, offset;
3800 rqst_page_get_length(&rqst[i], j, &len, &offset);
3801 sg_set_page(&sg[idx++], rqst[i].rq_pages[j], len, offset);
3804 smb2_sg_set_buf(&sg[idx], sign, SMB2_SIGNATURE_SIZE);
3809 smb2_get_enc_key(struct TCP_Server_Info *server, __u64 ses_id, int enc, u8 *key)
3811 struct cifs_ses *ses;
3814 spin_lock(&cifs_tcp_ses_lock);
3815 list_for_each_entry(server, &cifs_tcp_ses_list, tcp_ses_list) {
3816 list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) {
3817 if (ses->Suid == ses_id) {
3818 ses_enc_key = enc ? ses->smb3encryptionkey :
3819 ses->smb3decryptionkey;
3820 memcpy(key, ses_enc_key, SMB3_SIGN_KEY_SIZE);
3821 spin_unlock(&cifs_tcp_ses_lock);
3826 spin_unlock(&cifs_tcp_ses_lock);
3831 * Encrypt or decrypt @rqst message. @rqst[0] has the following format:
3832 * iov[0] - transform header (associate data),
3833 * iov[1-N] - SMB2 header and pages - data to encrypt.
3834 * On success return encrypted data in iov[1-N] and pages, leave iov[0]
3838 crypt_message(struct TCP_Server_Info *server, int num_rqst,
3839 struct smb_rqst *rqst, int enc)
3841 struct smb2_transform_hdr *tr_hdr =
3842 (struct smb2_transform_hdr *)rqst[0].rq_iov[0].iov_base;
3843 unsigned int assoc_data_len = sizeof(struct smb2_transform_hdr) - 20;
3845 struct scatterlist *sg;
3846 u8 sign[SMB2_SIGNATURE_SIZE] = {};
3847 u8 key[SMB3_SIGN_KEY_SIZE];
3848 struct aead_request *req;
3850 unsigned int iv_len;
3851 DECLARE_CRYPTO_WAIT(wait);
3852 struct crypto_aead *tfm;
3853 unsigned int crypt_len = le32_to_cpu(tr_hdr->OriginalMessageSize);
3855 rc = smb2_get_enc_key(server, tr_hdr->SessionId, enc, key);
3857 cifs_server_dbg(VFS, "%s: Could not get %scryption key\n", __func__,
3862 rc = smb3_crypto_aead_allocate(server);
3864 cifs_server_dbg(VFS, "%s: crypto alloc failed\n", __func__);
3868 tfm = enc ? server->secmech.ccmaesencrypt :
3869 server->secmech.ccmaesdecrypt;
3870 rc = crypto_aead_setkey(tfm, key, SMB3_SIGN_KEY_SIZE);
3872 cifs_server_dbg(VFS, "%s: Failed to set aead key %d\n", __func__, rc);
3876 rc = crypto_aead_setauthsize(tfm, SMB2_SIGNATURE_SIZE);
3878 cifs_server_dbg(VFS, "%s: Failed to set authsize %d\n", __func__, rc);
3882 req = aead_request_alloc(tfm, GFP_KERNEL);
3884 cifs_server_dbg(VFS, "%s: Failed to alloc aead request\n", __func__);
3889 memcpy(sign, &tr_hdr->Signature, SMB2_SIGNATURE_SIZE);
3890 crypt_len += SMB2_SIGNATURE_SIZE;
3893 sg = init_sg(num_rqst, rqst, sign);
3895 cifs_server_dbg(VFS, "%s: Failed to init sg\n", __func__);
3900 iv_len = crypto_aead_ivsize(tfm);
3901 iv = kzalloc(iv_len, GFP_KERNEL);
3903 cifs_server_dbg(VFS, "%s: Failed to alloc iv\n", __func__);
3908 if (server->cipher_type == SMB2_ENCRYPTION_AES128_GCM)
3909 memcpy(iv, (char *)tr_hdr->Nonce, SMB3_AES128GCM_NONCE);
3912 memcpy(iv + 1, (char *)tr_hdr->Nonce, SMB3_AES128CCM_NONCE);
3915 aead_request_set_crypt(req, sg, sg, crypt_len, iv);
3916 aead_request_set_ad(req, assoc_data_len);
3918 aead_request_set_callback(req, CRYPTO_TFM_REQ_MAY_BACKLOG,
3919 crypto_req_done, &wait);
3921 rc = crypto_wait_req(enc ? crypto_aead_encrypt(req)
3922 : crypto_aead_decrypt(req), &wait);
3925 memcpy(&tr_hdr->Signature, sign, SMB2_SIGNATURE_SIZE);
3936 smb3_free_compound_rqst(int num_rqst, struct smb_rqst *rqst)
3940 for (i = 0; i < num_rqst; i++) {
3941 if (rqst[i].rq_pages) {
3942 for (j = rqst[i].rq_npages - 1; j >= 0; j--)
3943 put_page(rqst[i].rq_pages[j]);
3944 kfree(rqst[i].rq_pages);
3950 * This function will initialize new_rq and encrypt the content.
3951 * The first entry, new_rq[0], only contains a single iov which contains
3952 * a smb2_transform_hdr and is pre-allocated by the caller.
3953 * This function then populates new_rq[1+] with the content from olq_rq[0+].
3955 * The end result is an array of smb_rqst structures where the first structure
3956 * only contains a single iov for the transform header which we then can pass
3957 * to crypt_message().
3959 * new_rq[0].rq_iov[0] : smb2_transform_hdr pre-allocated by the caller
3960 * new_rq[1+].rq_iov[*] == old_rq[0+].rq_iov[*] : SMB2/3 requests
3963 smb3_init_transform_rq(struct TCP_Server_Info *server, int num_rqst,
3964 struct smb_rqst *new_rq, struct smb_rqst *old_rq)
3966 struct page **pages;
3967 struct smb2_transform_hdr *tr_hdr = new_rq[0].rq_iov[0].iov_base;
3968 unsigned int npages;
3969 unsigned int orig_len = 0;
3973 for (i = 1; i < num_rqst; i++) {
3974 npages = old_rq[i - 1].rq_npages;
3975 pages = kmalloc_array(npages, sizeof(struct page *),
3980 new_rq[i].rq_pages = pages;
3981 new_rq[i].rq_npages = npages;
3982 new_rq[i].rq_offset = old_rq[i - 1].rq_offset;
3983 new_rq[i].rq_pagesz = old_rq[i - 1].rq_pagesz;
3984 new_rq[i].rq_tailsz = old_rq[i - 1].rq_tailsz;
3985 new_rq[i].rq_iov = old_rq[i - 1].rq_iov;
3986 new_rq[i].rq_nvec = old_rq[i - 1].rq_nvec;
3988 orig_len += smb_rqst_len(server, &old_rq[i - 1]);
3990 for (j = 0; j < npages; j++) {
3991 pages[j] = alloc_page(GFP_KERNEL|__GFP_HIGHMEM);
3996 /* copy pages form the old */
3997 for (j = 0; j < npages; j++) {
3999 unsigned int offset, len;
4001 rqst_page_get_length(&new_rq[i], j, &len, &offset);
4003 dst = (char *) kmap(new_rq[i].rq_pages[j]) + offset;
4004 src = (char *) kmap(old_rq[i - 1].rq_pages[j]) + offset;
4006 memcpy(dst, src, len);
4007 kunmap(new_rq[i].rq_pages[j]);
4008 kunmap(old_rq[i - 1].rq_pages[j]);
4012 /* fill the 1st iov with a transform header */
4013 fill_transform_hdr(tr_hdr, orig_len, old_rq, server->cipher_type);
4015 rc = crypt_message(server, num_rqst, new_rq, 1);
4016 cifs_dbg(FYI, "Encrypt message returned %d\n", rc);
4023 smb3_free_compound_rqst(num_rqst - 1, &new_rq[1]);
4028 smb3_is_transform_hdr(void *buf)
4030 struct smb2_transform_hdr *trhdr = buf;
4032 return trhdr->ProtocolId == SMB2_TRANSFORM_PROTO_NUM;
4036 decrypt_raw_data(struct TCP_Server_Info *server, char *buf,
4037 unsigned int buf_data_size, struct page **pages,
4038 unsigned int npages, unsigned int page_data_size)
4041 struct smb_rqst rqst = {NULL};
4044 iov[0].iov_base = buf;
4045 iov[0].iov_len = sizeof(struct smb2_transform_hdr);
4046 iov[1].iov_base = buf + sizeof(struct smb2_transform_hdr);
4047 iov[1].iov_len = buf_data_size;
4051 rqst.rq_pages = pages;
4052 rqst.rq_npages = npages;
4053 rqst.rq_pagesz = PAGE_SIZE;
4054 rqst.rq_tailsz = (page_data_size % PAGE_SIZE) ? : PAGE_SIZE;
4056 rc = crypt_message(server, 1, &rqst, 0);
4057 cifs_dbg(FYI, "Decrypt message returned %d\n", rc);
4062 memmove(buf, iov[1].iov_base, buf_data_size);
4064 server->total_read = buf_data_size + page_data_size;
4070 read_data_into_pages(struct TCP_Server_Info *server, struct page **pages,
4071 unsigned int npages, unsigned int len)
4076 for (i = 0; i < npages; i++) {
4077 struct page *page = pages[i];
4081 if (len >= PAGE_SIZE) {
4082 /* enough data to fill the page */
4086 zero_user(page, len, PAGE_SIZE - len);
4089 length = cifs_read_page_from_socket(server, page, 0, n);
4092 server->total_read += length;
4099 init_read_bvec(struct page **pages, unsigned int npages, unsigned int data_size,
4100 unsigned int cur_off, struct bio_vec **page_vec)
4102 struct bio_vec *bvec;
4105 bvec = kcalloc(npages, sizeof(struct bio_vec), GFP_KERNEL);
4109 for (i = 0; i < npages; i++) {
4110 bvec[i].bv_page = pages[i];
4111 bvec[i].bv_offset = (i == 0) ? cur_off : 0;
4112 bvec[i].bv_len = min_t(unsigned int, PAGE_SIZE, data_size);
4113 data_size -= bvec[i].bv_len;
4116 if (data_size != 0) {
4117 cifs_dbg(VFS, "%s: something went wrong\n", __func__);
4127 handle_read_data(struct TCP_Server_Info *server, struct mid_q_entry *mid,
4128 char *buf, unsigned int buf_len, struct page **pages,
4129 unsigned int npages, unsigned int page_data_size)
4131 unsigned int data_offset;
4132 unsigned int data_len;
4133 unsigned int cur_off;
4134 unsigned int cur_page_idx;
4135 unsigned int pad_len;
4136 struct cifs_readdata *rdata = mid->callback_data;
4137 struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)buf;
4138 struct bio_vec *bvec = NULL;
4139 struct iov_iter iter;
4142 bool use_rdma_mr = false;
4144 if (shdr->Command != SMB2_READ) {
4145 cifs_server_dbg(VFS, "only big read responses are supported\n");
4149 if (server->ops->is_session_expired &&
4150 server->ops->is_session_expired(buf)) {
4151 cifs_reconnect(server);
4152 wake_up(&server->response_q);
4156 if (server->ops->is_status_pending &&
4157 server->ops->is_status_pending(buf, server))
4160 /* set up first two iov to get credits */
4161 rdata->iov[0].iov_base = buf;
4162 rdata->iov[0].iov_len = 0;
4163 rdata->iov[1].iov_base = buf;
4164 rdata->iov[1].iov_len =
4165 min_t(unsigned int, buf_len, server->vals->read_rsp_size);
4166 cifs_dbg(FYI, "0: iov_base=%p iov_len=%zu\n",
4167 rdata->iov[0].iov_base, rdata->iov[0].iov_len);
4168 cifs_dbg(FYI, "1: iov_base=%p iov_len=%zu\n",
4169 rdata->iov[1].iov_base, rdata->iov[1].iov_len);
4171 rdata->result = server->ops->map_error(buf, true);
4172 if (rdata->result != 0) {
4173 cifs_dbg(FYI, "%s: server returned error %d\n",
4174 __func__, rdata->result);
4175 /* normal error on read response */
4176 dequeue_mid(mid, false);
4180 data_offset = server->ops->read_data_offset(buf);
4181 #ifdef CONFIG_CIFS_SMB_DIRECT
4182 use_rdma_mr = rdata->mr;
4184 data_len = server->ops->read_data_length(buf, use_rdma_mr);
4186 if (data_offset < server->vals->read_rsp_size) {
4188 * win2k8 sometimes sends an offset of 0 when the read
4189 * is beyond the EOF. Treat it as if the data starts just after
4192 cifs_dbg(FYI, "%s: data offset (%u) inside read response header\n",
4193 __func__, data_offset);
4194 data_offset = server->vals->read_rsp_size;
4195 } else if (data_offset > MAX_CIFS_SMALL_BUFFER_SIZE) {
4196 /* data_offset is beyond the end of smallbuf */
4197 cifs_dbg(FYI, "%s: data offset (%u) beyond end of smallbuf\n",
4198 __func__, data_offset);
4199 rdata->result = -EIO;
4200 dequeue_mid(mid, rdata->result);
4204 pad_len = data_offset - server->vals->read_rsp_size;
4206 if (buf_len <= data_offset) {
4207 /* read response payload is in pages */
4208 cur_page_idx = pad_len / PAGE_SIZE;
4209 cur_off = pad_len % PAGE_SIZE;
4211 if (cur_page_idx != 0) {
4212 /* data offset is beyond the 1st page of response */
4213 cifs_dbg(FYI, "%s: data offset (%u) beyond 1st page of response\n",
4214 __func__, data_offset);
4215 rdata->result = -EIO;
4216 dequeue_mid(mid, rdata->result);
4220 if (data_len > page_data_size - pad_len) {
4221 /* data_len is corrupt -- discard frame */
4222 rdata->result = -EIO;
4223 dequeue_mid(mid, rdata->result);
4227 rdata->result = init_read_bvec(pages, npages, page_data_size,
4229 if (rdata->result != 0) {
4230 dequeue_mid(mid, rdata->result);
4234 iov_iter_bvec(&iter, WRITE, bvec, npages, data_len);
4235 } else if (buf_len >= data_offset + data_len) {
4236 /* read response payload is in buf */
4237 WARN_ONCE(npages > 0, "read data can be either in buf or in pages");
4238 iov.iov_base = buf + data_offset;
4239 iov.iov_len = data_len;
4240 iov_iter_kvec(&iter, WRITE, &iov, 1, data_len);
4242 /* read response payload cannot be in both buf and pages */
4243 WARN_ONCE(1, "buf can not contain only a part of read data");
4244 rdata->result = -EIO;
4245 dequeue_mid(mid, rdata->result);
4249 length = rdata->copy_into_pages(server, rdata, &iter);
4256 dequeue_mid(mid, false);
4260 struct smb2_decrypt_work {
4261 struct work_struct decrypt;
4262 struct TCP_Server_Info *server;
4263 struct page **ppages;
4265 unsigned int npages;
4270 static void smb2_decrypt_offload(struct work_struct *work)
4272 struct smb2_decrypt_work *dw = container_of(work,
4273 struct smb2_decrypt_work, decrypt);
4275 struct mid_q_entry *mid;
4277 rc = decrypt_raw_data(dw->server, dw->buf, dw->server->vals->read_rsp_size,
4278 dw->ppages, dw->npages, dw->len);
4280 cifs_dbg(VFS, "error decrypting rc=%d\n", rc);
4284 dw->server->lstrp = jiffies;
4285 mid = smb2_find_mid(dw->server, dw->buf);
4287 cifs_dbg(FYI, "mid not found\n");
4289 mid->decrypted = true;
4290 rc = handle_read_data(dw->server, mid, dw->buf,
4291 dw->server->vals->read_rsp_size,
4292 dw->ppages, dw->npages, dw->len);
4294 cifs_mid_q_entry_release(mid);
4298 for (i = dw->npages-1; i >= 0; i--)
4299 put_page(dw->ppages[i]);
4302 cifs_small_buf_release(dw->buf);
4308 receive_encrypted_read(struct TCP_Server_Info *server, struct mid_q_entry **mid,
4311 char *buf = server->smallbuf;
4312 struct smb2_transform_hdr *tr_hdr = (struct smb2_transform_hdr *)buf;
4313 unsigned int npages;
4314 struct page **pages;
4316 unsigned int buflen = server->pdu_size;
4319 struct smb2_decrypt_work *dw;
4322 len = min_t(unsigned int, buflen, server->vals->read_rsp_size +
4323 sizeof(struct smb2_transform_hdr)) - HEADER_SIZE(server) + 1;
4325 rc = cifs_read_from_socket(server, buf + HEADER_SIZE(server) - 1, len);
4328 server->total_read += rc;
4330 len = le32_to_cpu(tr_hdr->OriginalMessageSize) -
4331 server->vals->read_rsp_size;
4332 npages = DIV_ROUND_UP(len, PAGE_SIZE);
4334 pages = kmalloc_array(npages, sizeof(struct page *), GFP_KERNEL);
4340 for (; i < npages; i++) {
4341 pages[i] = alloc_page(GFP_KERNEL|__GFP_HIGHMEM);
4348 /* read read data into pages */
4349 rc = read_data_into_pages(server, pages, npages, len);
4353 rc = cifs_discard_remaining_data(server);
4358 * For large reads, offload to different thread for better performance,
4359 * use more cores decrypting which can be expensive
4362 if ((server->min_offload) && (server->in_flight > 1) &&
4363 (server->pdu_size >= server->min_offload)) {
4364 dw = kmalloc(sizeof(struct smb2_decrypt_work), GFP_KERNEL);
4366 goto non_offloaded_decrypt;
4368 dw->buf = server->smallbuf;
4369 server->smallbuf = (char *)cifs_small_buf_get();
4371 INIT_WORK(&dw->decrypt, smb2_decrypt_offload);
4373 dw->npages = npages;
4374 dw->server = server;
4377 queue_work(decrypt_wq, &dw->decrypt);
4378 *num_mids = 0; /* worker thread takes care of finding mid */
4382 non_offloaded_decrypt:
4383 rc = decrypt_raw_data(server, buf, server->vals->read_rsp_size,
4384 pages, npages, len);
4388 *mid = smb2_find_mid(server, buf);
4390 cifs_dbg(FYI, "mid not found\n");
4392 cifs_dbg(FYI, "mid found\n");
4393 (*mid)->decrypted = true;
4394 rc = handle_read_data(server, *mid, buf,
4395 server->vals->read_rsp_size,
4396 pages, npages, len);
4400 for (i = i - 1; i >= 0; i--)
4405 cifs_discard_remaining_data(server);
4410 receive_encrypted_standard(struct TCP_Server_Info *server,
4411 struct mid_q_entry **mids, char **bufs,
4415 char *buf = server->smallbuf;
4416 struct smb2_sync_hdr *shdr;
4417 unsigned int pdu_length = server->pdu_size;
4418 unsigned int buf_size;
4419 struct mid_q_entry *mid_entry;
4421 char *next_buffer = NULL;
4425 /* switch to large buffer if too big for a small one */
4426 if (pdu_length > MAX_CIFS_SMALL_BUFFER_SIZE) {
4427 server->large_buf = true;
4428 memcpy(server->bigbuf, buf, server->total_read);
4429 buf = server->bigbuf;
4432 /* now read the rest */
4433 length = cifs_read_from_socket(server, buf + HEADER_SIZE(server) - 1,
4434 pdu_length - HEADER_SIZE(server) + 1);
4437 server->total_read += length;
4439 buf_size = pdu_length - sizeof(struct smb2_transform_hdr);
4440 length = decrypt_raw_data(server, buf, buf_size, NULL, 0, 0);
4444 next_is_large = server->large_buf;
4446 shdr = (struct smb2_sync_hdr *)buf;
4447 if (shdr->NextCommand) {
4449 next_buffer = (char *)cifs_buf_get();
4451 next_buffer = (char *)cifs_small_buf_get();
4453 buf + le32_to_cpu(shdr->NextCommand),
4454 pdu_length - le32_to_cpu(shdr->NextCommand));
4457 mid_entry = smb2_find_mid(server, buf);
4458 if (mid_entry == NULL)
4459 cifs_dbg(FYI, "mid not found\n");
4461 cifs_dbg(FYI, "mid found\n");
4462 mid_entry->decrypted = true;
4463 mid_entry->resp_buf_size = server->pdu_size;
4466 if (*num_mids >= MAX_COMPOUND) {
4467 cifs_server_dbg(VFS, "too many PDUs in compound\n");
4470 bufs[*num_mids] = buf;
4471 mids[(*num_mids)++] = mid_entry;
4473 if (mid_entry && mid_entry->handle)
4474 ret = mid_entry->handle(server, mid_entry);
4476 ret = cifs_handle_standard(server, mid_entry);
4478 if (ret == 0 && shdr->NextCommand) {
4479 pdu_length -= le32_to_cpu(shdr->NextCommand);
4480 server->large_buf = next_is_large;
4482 server->bigbuf = buf = next_buffer;
4484 server->smallbuf = buf = next_buffer;
4486 } else if (ret != 0) {
4488 * ret != 0 here means that we didn't get to handle_mid() thus
4489 * server->smallbuf and server->bigbuf are still valid. We need
4490 * to free next_buffer because it is not going to be used
4494 free_rsp_buf(CIFS_LARGE_BUFFER, next_buffer);
4496 free_rsp_buf(CIFS_SMALL_BUFFER, next_buffer);
4503 smb3_receive_transform(struct TCP_Server_Info *server,
4504 struct mid_q_entry **mids, char **bufs, int *num_mids)
4506 char *buf = server->smallbuf;
4507 unsigned int pdu_length = server->pdu_size;
4508 struct smb2_transform_hdr *tr_hdr = (struct smb2_transform_hdr *)buf;
4509 unsigned int orig_len = le32_to_cpu(tr_hdr->OriginalMessageSize);
4511 if (pdu_length < sizeof(struct smb2_transform_hdr) +
4512 sizeof(struct smb2_sync_hdr)) {
4513 cifs_server_dbg(VFS, "Transform message is too small (%u)\n",
4515 cifs_reconnect(server);
4516 wake_up(&server->response_q);
4517 return -ECONNABORTED;
4520 if (pdu_length < orig_len + sizeof(struct smb2_transform_hdr)) {
4521 cifs_server_dbg(VFS, "Transform message is broken\n");
4522 cifs_reconnect(server);
4523 wake_up(&server->response_q);
4524 return -ECONNABORTED;
4527 /* TODO: add support for compounds containing READ. */
4528 if (pdu_length > CIFSMaxBufSize + MAX_HEADER_SIZE(server)) {
4529 return receive_encrypted_read(server, &mids[0], num_mids);
4532 return receive_encrypted_standard(server, mids, bufs, num_mids);
4536 smb3_handle_read_data(struct TCP_Server_Info *server, struct mid_q_entry *mid)
4538 char *buf = server->large_buf ? server->bigbuf : server->smallbuf;
4540 return handle_read_data(server, mid, buf, server->pdu_size,
4545 smb2_next_header(char *buf)
4547 struct smb2_sync_hdr *hdr = (struct smb2_sync_hdr *)buf;
4548 struct smb2_transform_hdr *t_hdr = (struct smb2_transform_hdr *)buf;
4550 if (hdr->ProtocolId == SMB2_TRANSFORM_PROTO_NUM)
4551 return sizeof(struct smb2_transform_hdr) +
4552 le32_to_cpu(t_hdr->OriginalMessageSize);
4554 return le32_to_cpu(hdr->NextCommand);
4558 smb2_make_node(unsigned int xid, struct inode *inode,
4559 struct dentry *dentry, struct cifs_tcon *tcon,
4560 char *full_path, umode_t mode, dev_t dev)
4562 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
4564 FILE_ALL_INFO *buf = NULL;
4565 struct cifs_io_parms io_parms;
4567 struct cifs_fid fid;
4568 struct cifs_open_parms oparms;
4569 unsigned int bytes_written;
4570 struct win_dev *pdev;
4574 * Check if mounted with mount parm 'sfu' mount parm.
4575 * SFU emulation should work with all servers, but only
4576 * supports block and char device (no socket & fifo),
4577 * and was used by default in earlier versions of Windows
4579 if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL))
4583 * TODO: Add ability to create instead via reparse point. Windows (e.g.
4584 * their current NFS server) uses this approach to expose special files
4585 * over SMB2/SMB3 and Samba will do this with SMB3.1.1 POSIX Extensions
4588 if (!S_ISCHR(mode) && !S_ISBLK(mode))
4591 cifs_dbg(FYI, "sfu compat create special file\n");
4593 buf = kmalloc(sizeof(FILE_ALL_INFO), GFP_KERNEL);
4600 oparms.cifs_sb = cifs_sb;
4601 oparms.desired_access = GENERIC_WRITE;
4602 oparms.create_options = cifs_create_options(cifs_sb, CREATE_NOT_DIR |
4603 CREATE_OPTION_SPECIAL);
4604 oparms.disposition = FILE_CREATE;
4605 oparms.path = full_path;
4607 oparms.reconnect = false;
4609 if (tcon->ses->server->oplocks)
4610 oplock = REQ_OPLOCK;
4613 rc = tcon->ses->server->ops->open(xid, &oparms, &oplock, buf);
4618 * BB Do not bother to decode buf since no local inode yet to put
4619 * timestamps in, but we can reuse it safely.
4622 pdev = (struct win_dev *)buf;
4623 io_parms.pid = current->tgid;
4624 io_parms.tcon = tcon;
4625 io_parms.offset = 0;
4626 io_parms.length = sizeof(struct win_dev);
4627 iov[1].iov_base = buf;
4628 iov[1].iov_len = sizeof(struct win_dev);
4629 if (S_ISCHR(mode)) {
4630 memcpy(pdev->type, "IntxCHR", 8);
4631 pdev->major = cpu_to_le64(MAJOR(dev));
4632 pdev->minor = cpu_to_le64(MINOR(dev));
4633 rc = tcon->ses->server->ops->sync_write(xid, &fid, &io_parms,
4634 &bytes_written, iov, 1);
4635 } else if (S_ISBLK(mode)) {
4636 memcpy(pdev->type, "IntxBLK", 8);
4637 pdev->major = cpu_to_le64(MAJOR(dev));
4638 pdev->minor = cpu_to_le64(MINOR(dev));
4639 rc = tcon->ses->server->ops->sync_write(xid, &fid, &io_parms,
4640 &bytes_written, iov, 1);
4642 tcon->ses->server->ops->close(xid, tcon, &fid);
4645 /* FIXME: add code here to set EAs */
4652 struct smb_version_operations smb20_operations = {
4653 .compare_fids = smb2_compare_fids,
4654 .setup_request = smb2_setup_request,
4655 .setup_async_request = smb2_setup_async_request,
4656 .check_receive = smb2_check_receive,
4657 .add_credits = smb2_add_credits,
4658 .set_credits = smb2_set_credits,
4659 .get_credits_field = smb2_get_credits_field,
4660 .get_credits = smb2_get_credits,
4661 .wait_mtu_credits = cifs_wait_mtu_credits,
4662 .get_next_mid = smb2_get_next_mid,
4663 .revert_current_mid = smb2_revert_current_mid,
4664 .read_data_offset = smb2_read_data_offset,
4665 .read_data_length = smb2_read_data_length,
4666 .map_error = map_smb2_to_linux_error,
4667 .find_mid = smb2_find_mid,
4668 .check_message = smb2_check_message,
4669 .dump_detail = smb2_dump_detail,
4670 .clear_stats = smb2_clear_stats,
4671 .print_stats = smb2_print_stats,
4672 .is_oplock_break = smb2_is_valid_oplock_break,
4673 .handle_cancelled_mid = smb2_handle_cancelled_mid,
4674 .downgrade_oplock = smb2_downgrade_oplock,
4675 .need_neg = smb2_need_neg,
4676 .negotiate = smb2_negotiate,
4677 .negotiate_wsize = smb2_negotiate_wsize,
4678 .negotiate_rsize = smb2_negotiate_rsize,
4679 .sess_setup = SMB2_sess_setup,
4680 .logoff = SMB2_logoff,
4681 .tree_connect = SMB2_tcon,
4682 .tree_disconnect = SMB2_tdis,
4683 .qfs_tcon = smb2_qfs_tcon,
4684 .is_path_accessible = smb2_is_path_accessible,
4685 .can_echo = smb2_can_echo,
4687 .query_path_info = smb2_query_path_info,
4688 .get_srv_inum = smb2_get_srv_inum,
4689 .query_file_info = smb2_query_file_info,
4690 .set_path_size = smb2_set_path_size,
4691 .set_file_size = smb2_set_file_size,
4692 .set_file_info = smb2_set_file_info,
4693 .set_compression = smb2_set_compression,
4694 .mkdir = smb2_mkdir,
4695 .mkdir_setinfo = smb2_mkdir_setinfo,
4696 .rmdir = smb2_rmdir,
4697 .unlink = smb2_unlink,
4698 .rename = smb2_rename_path,
4699 .create_hardlink = smb2_create_hardlink,
4700 .query_symlink = smb2_query_symlink,
4701 .query_mf_symlink = smb3_query_mf_symlink,
4702 .create_mf_symlink = smb3_create_mf_symlink,
4703 .open = smb2_open_file,
4704 .set_fid = smb2_set_fid,
4705 .close = smb2_close_file,
4706 .flush = smb2_flush_file,
4707 .async_readv = smb2_async_readv,
4708 .async_writev = smb2_async_writev,
4709 .sync_read = smb2_sync_read,
4710 .sync_write = smb2_sync_write,
4711 .query_dir_first = smb2_query_dir_first,
4712 .query_dir_next = smb2_query_dir_next,
4713 .close_dir = smb2_close_dir,
4714 .calc_smb_size = smb2_calc_size,
4715 .is_status_pending = smb2_is_status_pending,
4716 .is_session_expired = smb2_is_session_expired,
4717 .oplock_response = smb2_oplock_response,
4718 .queryfs = smb2_queryfs,
4719 .mand_lock = smb2_mand_lock,
4720 .mand_unlock_range = smb2_unlock_range,
4721 .push_mand_locks = smb2_push_mandatory_locks,
4722 .get_lease_key = smb2_get_lease_key,
4723 .set_lease_key = smb2_set_lease_key,
4724 .new_lease_key = smb2_new_lease_key,
4725 .calc_signature = smb2_calc_signature,
4726 .is_read_op = smb2_is_read_op,
4727 .set_oplock_level = smb2_set_oplock_level,
4728 .create_lease_buf = smb2_create_lease_buf,
4729 .parse_lease_buf = smb2_parse_lease_buf,
4730 .copychunk_range = smb2_copychunk_range,
4731 .wp_retry_size = smb2_wp_retry_size,
4732 .dir_needs_close = smb2_dir_needs_close,
4733 .get_dfs_refer = smb2_get_dfs_refer,
4734 .select_sectype = smb2_select_sectype,
4735 #ifdef CONFIG_CIFS_XATTR
4736 .query_all_EAs = smb2_query_eas,
4737 .set_EA = smb2_set_ea,
4738 #endif /* CIFS_XATTR */
4739 .get_acl = get_smb2_acl,
4740 .get_acl_by_fid = get_smb2_acl_by_fid,
4741 .set_acl = set_smb2_acl,
4742 .next_header = smb2_next_header,
4743 .ioctl_query_info = smb2_ioctl_query_info,
4744 .make_node = smb2_make_node,
4745 .fiemap = smb3_fiemap,
4746 .llseek = smb3_llseek,
4749 struct smb_version_operations smb21_operations = {
4750 .compare_fids = smb2_compare_fids,
4751 .setup_request = smb2_setup_request,
4752 .setup_async_request = smb2_setup_async_request,
4753 .check_receive = smb2_check_receive,
4754 .add_credits = smb2_add_credits,
4755 .set_credits = smb2_set_credits,
4756 .get_credits_field = smb2_get_credits_field,
4757 .get_credits = smb2_get_credits,
4758 .wait_mtu_credits = smb2_wait_mtu_credits,
4759 .adjust_credits = smb2_adjust_credits,
4760 .get_next_mid = smb2_get_next_mid,
4761 .revert_current_mid = smb2_revert_current_mid,
4762 .read_data_offset = smb2_read_data_offset,
4763 .read_data_length = smb2_read_data_length,
4764 .map_error = map_smb2_to_linux_error,
4765 .find_mid = smb2_find_mid,
4766 .check_message = smb2_check_message,
4767 .dump_detail = smb2_dump_detail,
4768 .clear_stats = smb2_clear_stats,
4769 .print_stats = smb2_print_stats,
4770 .is_oplock_break = smb2_is_valid_oplock_break,
4771 .handle_cancelled_mid = smb2_handle_cancelled_mid,
4772 .downgrade_oplock = smb2_downgrade_oplock,
4773 .need_neg = smb2_need_neg,
4774 .negotiate = smb2_negotiate,
4775 .negotiate_wsize = smb2_negotiate_wsize,
4776 .negotiate_rsize = smb2_negotiate_rsize,
4777 .sess_setup = SMB2_sess_setup,
4778 .logoff = SMB2_logoff,
4779 .tree_connect = SMB2_tcon,
4780 .tree_disconnect = SMB2_tdis,
4781 .qfs_tcon = smb2_qfs_tcon,
4782 .is_path_accessible = smb2_is_path_accessible,
4783 .can_echo = smb2_can_echo,
4785 .query_path_info = smb2_query_path_info,
4786 .get_srv_inum = smb2_get_srv_inum,
4787 .query_file_info = smb2_query_file_info,
4788 .set_path_size = smb2_set_path_size,
4789 .set_file_size = smb2_set_file_size,
4790 .set_file_info = smb2_set_file_info,
4791 .set_compression = smb2_set_compression,
4792 .mkdir = smb2_mkdir,
4793 .mkdir_setinfo = smb2_mkdir_setinfo,
4794 .rmdir = smb2_rmdir,
4795 .unlink = smb2_unlink,
4796 .rename = smb2_rename_path,
4797 .create_hardlink = smb2_create_hardlink,
4798 .query_symlink = smb2_query_symlink,
4799 .query_mf_symlink = smb3_query_mf_symlink,
4800 .create_mf_symlink = smb3_create_mf_symlink,
4801 .open = smb2_open_file,
4802 .set_fid = smb2_set_fid,
4803 .close = smb2_close_file,
4804 .flush = smb2_flush_file,
4805 .async_readv = smb2_async_readv,
4806 .async_writev = smb2_async_writev,
4807 .sync_read = smb2_sync_read,
4808 .sync_write = smb2_sync_write,
4809 .query_dir_first = smb2_query_dir_first,
4810 .query_dir_next = smb2_query_dir_next,
4811 .close_dir = smb2_close_dir,
4812 .calc_smb_size = smb2_calc_size,
4813 .is_status_pending = smb2_is_status_pending,
4814 .is_session_expired = smb2_is_session_expired,
4815 .oplock_response = smb2_oplock_response,
4816 .queryfs = smb2_queryfs,
4817 .mand_lock = smb2_mand_lock,
4818 .mand_unlock_range = smb2_unlock_range,
4819 .push_mand_locks = smb2_push_mandatory_locks,
4820 .get_lease_key = smb2_get_lease_key,
4821 .set_lease_key = smb2_set_lease_key,
4822 .new_lease_key = smb2_new_lease_key,
4823 .calc_signature = smb2_calc_signature,
4824 .is_read_op = smb21_is_read_op,
4825 .set_oplock_level = smb21_set_oplock_level,
4826 .create_lease_buf = smb2_create_lease_buf,
4827 .parse_lease_buf = smb2_parse_lease_buf,
4828 .copychunk_range = smb2_copychunk_range,
4829 .wp_retry_size = smb2_wp_retry_size,
4830 .dir_needs_close = smb2_dir_needs_close,
4831 .enum_snapshots = smb3_enum_snapshots,
4832 .notify = smb3_notify,
4833 .get_dfs_refer = smb2_get_dfs_refer,
4834 .select_sectype = smb2_select_sectype,
4835 #ifdef CONFIG_CIFS_XATTR
4836 .query_all_EAs = smb2_query_eas,
4837 .set_EA = smb2_set_ea,
4838 #endif /* CIFS_XATTR */
4839 .get_acl = get_smb2_acl,
4840 .get_acl_by_fid = get_smb2_acl_by_fid,
4841 .set_acl = set_smb2_acl,
4842 .next_header = smb2_next_header,
4843 .ioctl_query_info = smb2_ioctl_query_info,
4844 .make_node = smb2_make_node,
4845 .fiemap = smb3_fiemap,
4846 .llseek = smb3_llseek,
4849 struct smb_version_operations smb30_operations = {
4850 .compare_fids = smb2_compare_fids,
4851 .setup_request = smb2_setup_request,
4852 .setup_async_request = smb2_setup_async_request,
4853 .check_receive = smb2_check_receive,
4854 .add_credits = smb2_add_credits,
4855 .set_credits = smb2_set_credits,
4856 .get_credits_field = smb2_get_credits_field,
4857 .get_credits = smb2_get_credits,
4858 .wait_mtu_credits = smb2_wait_mtu_credits,
4859 .adjust_credits = smb2_adjust_credits,
4860 .get_next_mid = smb2_get_next_mid,
4861 .revert_current_mid = smb2_revert_current_mid,
4862 .read_data_offset = smb2_read_data_offset,
4863 .read_data_length = smb2_read_data_length,
4864 .map_error = map_smb2_to_linux_error,
4865 .find_mid = smb2_find_mid,
4866 .check_message = smb2_check_message,
4867 .dump_detail = smb2_dump_detail,
4868 .clear_stats = smb2_clear_stats,
4869 .print_stats = smb2_print_stats,
4870 .dump_share_caps = smb2_dump_share_caps,
4871 .is_oplock_break = smb2_is_valid_oplock_break,
4872 .handle_cancelled_mid = smb2_handle_cancelled_mid,
4873 .downgrade_oplock = smb3_downgrade_oplock,
4874 .need_neg = smb2_need_neg,
4875 .negotiate = smb2_negotiate,
4876 .negotiate_wsize = smb3_negotiate_wsize,
4877 .negotiate_rsize = smb3_negotiate_rsize,
4878 .sess_setup = SMB2_sess_setup,
4879 .logoff = SMB2_logoff,
4880 .tree_connect = SMB2_tcon,
4881 .tree_disconnect = SMB2_tdis,
4882 .qfs_tcon = smb3_qfs_tcon,
4883 .is_path_accessible = smb2_is_path_accessible,
4884 .can_echo = smb2_can_echo,
4886 .query_path_info = smb2_query_path_info,
4887 .get_srv_inum = smb2_get_srv_inum,
4888 .query_file_info = smb2_query_file_info,
4889 .set_path_size = smb2_set_path_size,
4890 .set_file_size = smb2_set_file_size,
4891 .set_file_info = smb2_set_file_info,
4892 .set_compression = smb2_set_compression,
4893 .mkdir = smb2_mkdir,
4894 .mkdir_setinfo = smb2_mkdir_setinfo,
4895 .rmdir = smb2_rmdir,
4896 .unlink = smb2_unlink,
4897 .rename = smb2_rename_path,
4898 .create_hardlink = smb2_create_hardlink,
4899 .query_symlink = smb2_query_symlink,
4900 .query_mf_symlink = smb3_query_mf_symlink,
4901 .create_mf_symlink = smb3_create_mf_symlink,
4902 .open = smb2_open_file,
4903 .set_fid = smb2_set_fid,
4904 .close = smb2_close_file,
4905 .close_getattr = smb2_close_getattr,
4906 .flush = smb2_flush_file,
4907 .async_readv = smb2_async_readv,
4908 .async_writev = smb2_async_writev,
4909 .sync_read = smb2_sync_read,
4910 .sync_write = smb2_sync_write,
4911 .query_dir_first = smb2_query_dir_first,
4912 .query_dir_next = smb2_query_dir_next,
4913 .close_dir = smb2_close_dir,
4914 .calc_smb_size = smb2_calc_size,
4915 .is_status_pending = smb2_is_status_pending,
4916 .is_session_expired = smb2_is_session_expired,
4917 .oplock_response = smb2_oplock_response,
4918 .queryfs = smb2_queryfs,
4919 .mand_lock = smb2_mand_lock,
4920 .mand_unlock_range = smb2_unlock_range,
4921 .push_mand_locks = smb2_push_mandatory_locks,
4922 .get_lease_key = smb2_get_lease_key,
4923 .set_lease_key = smb2_set_lease_key,
4924 .new_lease_key = smb2_new_lease_key,
4925 .generate_signingkey = generate_smb30signingkey,
4926 .calc_signature = smb3_calc_signature,
4927 .set_integrity = smb3_set_integrity,
4928 .is_read_op = smb21_is_read_op,
4929 .set_oplock_level = smb3_set_oplock_level,
4930 .create_lease_buf = smb3_create_lease_buf,
4931 .parse_lease_buf = smb3_parse_lease_buf,
4932 .copychunk_range = smb2_copychunk_range,
4933 .duplicate_extents = smb2_duplicate_extents,
4934 .validate_negotiate = smb3_validate_negotiate,
4935 .wp_retry_size = smb2_wp_retry_size,
4936 .dir_needs_close = smb2_dir_needs_close,
4937 .fallocate = smb3_fallocate,
4938 .enum_snapshots = smb3_enum_snapshots,
4939 .notify = smb3_notify,
4940 .init_transform_rq = smb3_init_transform_rq,
4941 .is_transform_hdr = smb3_is_transform_hdr,
4942 .receive_transform = smb3_receive_transform,
4943 .get_dfs_refer = smb2_get_dfs_refer,
4944 .select_sectype = smb2_select_sectype,
4945 #ifdef CONFIG_CIFS_XATTR
4946 .query_all_EAs = smb2_query_eas,
4947 .set_EA = smb2_set_ea,
4948 #endif /* CIFS_XATTR */
4949 .get_acl = get_smb2_acl,
4950 .get_acl_by_fid = get_smb2_acl_by_fid,
4951 .set_acl = set_smb2_acl,
4952 .next_header = smb2_next_header,
4953 .ioctl_query_info = smb2_ioctl_query_info,
4954 .make_node = smb2_make_node,
4955 .fiemap = smb3_fiemap,
4956 .llseek = smb3_llseek,
4959 struct smb_version_operations smb311_operations = {
4960 .compare_fids = smb2_compare_fids,
4961 .setup_request = smb2_setup_request,
4962 .setup_async_request = smb2_setup_async_request,
4963 .check_receive = smb2_check_receive,
4964 .add_credits = smb2_add_credits,
4965 .set_credits = smb2_set_credits,
4966 .get_credits_field = smb2_get_credits_field,
4967 .get_credits = smb2_get_credits,
4968 .wait_mtu_credits = smb2_wait_mtu_credits,
4969 .adjust_credits = smb2_adjust_credits,
4970 .get_next_mid = smb2_get_next_mid,
4971 .revert_current_mid = smb2_revert_current_mid,
4972 .read_data_offset = smb2_read_data_offset,
4973 .read_data_length = smb2_read_data_length,
4974 .map_error = map_smb2_to_linux_error,
4975 .find_mid = smb2_find_mid,
4976 .check_message = smb2_check_message,
4977 .dump_detail = smb2_dump_detail,
4978 .clear_stats = smb2_clear_stats,
4979 .print_stats = smb2_print_stats,
4980 .dump_share_caps = smb2_dump_share_caps,
4981 .is_oplock_break = smb2_is_valid_oplock_break,
4982 .handle_cancelled_mid = smb2_handle_cancelled_mid,
4983 .downgrade_oplock = smb3_downgrade_oplock,
4984 .need_neg = smb2_need_neg,
4985 .negotiate = smb2_negotiate,
4986 .negotiate_wsize = smb3_negotiate_wsize,
4987 .negotiate_rsize = smb3_negotiate_rsize,
4988 .sess_setup = SMB2_sess_setup,
4989 .logoff = SMB2_logoff,
4990 .tree_connect = SMB2_tcon,
4991 .tree_disconnect = SMB2_tdis,
4992 .qfs_tcon = smb3_qfs_tcon,
4993 .is_path_accessible = smb2_is_path_accessible,
4994 .can_echo = smb2_can_echo,
4996 .query_path_info = smb2_query_path_info,
4997 .get_srv_inum = smb2_get_srv_inum,
4998 .query_file_info = smb2_query_file_info,
4999 .set_path_size = smb2_set_path_size,
5000 .set_file_size = smb2_set_file_size,
5001 .set_file_info = smb2_set_file_info,
5002 .set_compression = smb2_set_compression,
5003 .mkdir = smb2_mkdir,
5004 .mkdir_setinfo = smb2_mkdir_setinfo,
5005 .posix_mkdir = smb311_posix_mkdir,
5006 .rmdir = smb2_rmdir,
5007 .unlink = smb2_unlink,
5008 .rename = smb2_rename_path,
5009 .create_hardlink = smb2_create_hardlink,
5010 .query_symlink = smb2_query_symlink,
5011 .query_mf_symlink = smb3_query_mf_symlink,
5012 .create_mf_symlink = smb3_create_mf_symlink,
5013 .open = smb2_open_file,
5014 .set_fid = smb2_set_fid,
5015 .close = smb2_close_file,
5016 .close_getattr = smb2_close_getattr,
5017 .flush = smb2_flush_file,
5018 .async_readv = smb2_async_readv,
5019 .async_writev = smb2_async_writev,
5020 .sync_read = smb2_sync_read,
5021 .sync_write = smb2_sync_write,
5022 .query_dir_first = smb2_query_dir_first,
5023 .query_dir_next = smb2_query_dir_next,
5024 .close_dir = smb2_close_dir,
5025 .calc_smb_size = smb2_calc_size,
5026 .is_status_pending = smb2_is_status_pending,
5027 .is_session_expired = smb2_is_session_expired,
5028 .oplock_response = smb2_oplock_response,
5029 .queryfs = smb311_queryfs,
5030 .mand_lock = smb2_mand_lock,
5031 .mand_unlock_range = smb2_unlock_range,
5032 .push_mand_locks = smb2_push_mandatory_locks,
5033 .get_lease_key = smb2_get_lease_key,
5034 .set_lease_key = smb2_set_lease_key,
5035 .new_lease_key = smb2_new_lease_key,
5036 .generate_signingkey = generate_smb311signingkey,
5037 .calc_signature = smb3_calc_signature,
5038 .set_integrity = smb3_set_integrity,
5039 .is_read_op = smb21_is_read_op,
5040 .set_oplock_level = smb3_set_oplock_level,
5041 .create_lease_buf = smb3_create_lease_buf,
5042 .parse_lease_buf = smb3_parse_lease_buf,
5043 .copychunk_range = smb2_copychunk_range,
5044 .duplicate_extents = smb2_duplicate_extents,
5045 /* .validate_negotiate = smb3_validate_negotiate, */ /* not used in 3.11 */
5046 .wp_retry_size = smb2_wp_retry_size,
5047 .dir_needs_close = smb2_dir_needs_close,
5048 .fallocate = smb3_fallocate,
5049 .enum_snapshots = smb3_enum_snapshots,
5050 .notify = smb3_notify,
5051 .init_transform_rq = smb3_init_transform_rq,
5052 .is_transform_hdr = smb3_is_transform_hdr,
5053 .receive_transform = smb3_receive_transform,
5054 .get_dfs_refer = smb2_get_dfs_refer,
5055 .select_sectype = smb2_select_sectype,
5056 #ifdef CONFIG_CIFS_XATTR
5057 .query_all_EAs = smb2_query_eas,
5058 .set_EA = smb2_set_ea,
5059 #endif /* CIFS_XATTR */
5060 .get_acl = get_smb2_acl,
5061 .get_acl_by_fid = get_smb2_acl_by_fid,
5062 .set_acl = set_smb2_acl,
5063 .next_header = smb2_next_header,
5064 .ioctl_query_info = smb2_ioctl_query_info,
5065 .make_node = smb2_make_node,
5066 .fiemap = smb3_fiemap,
5067 .llseek = smb3_llseek,
5070 struct smb_version_values smb20_values = {
5071 .version_string = SMB20_VERSION_STRING,
5072 .protocol_id = SMB20_PROT_ID,
5073 .req_capabilities = 0, /* MBZ */
5074 .large_lock_type = 0,
5075 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
5076 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
5077 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
5078 .header_size = sizeof(struct smb2_sync_hdr),
5079 .header_preamble_size = 0,
5080 .max_header_size = MAX_SMB2_HDR_SIZE,
5081 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
5082 .lock_cmd = SMB2_LOCK,
5084 .cap_nt_find = SMB2_NT_FIND,
5085 .cap_large_files = SMB2_LARGE_FILES,
5086 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
5087 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
5088 .create_lease_size = sizeof(struct create_lease),
5091 struct smb_version_values smb21_values = {
5092 .version_string = SMB21_VERSION_STRING,
5093 .protocol_id = SMB21_PROT_ID,
5094 .req_capabilities = 0, /* MBZ on negotiate req until SMB3 dialect */
5095 .large_lock_type = 0,
5096 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
5097 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
5098 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
5099 .header_size = sizeof(struct smb2_sync_hdr),
5100 .header_preamble_size = 0,
5101 .max_header_size = MAX_SMB2_HDR_SIZE,
5102 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
5103 .lock_cmd = SMB2_LOCK,
5105 .cap_nt_find = SMB2_NT_FIND,
5106 .cap_large_files = SMB2_LARGE_FILES,
5107 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
5108 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
5109 .create_lease_size = sizeof(struct create_lease),
5112 struct smb_version_values smb3any_values = {
5113 .version_string = SMB3ANY_VERSION_STRING,
5114 .protocol_id = SMB302_PROT_ID, /* doesn't matter, send protocol array */
5115 .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,
5116 .large_lock_type = 0,
5117 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
5118 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
5119 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
5120 .header_size = sizeof(struct smb2_sync_hdr),
5121 .header_preamble_size = 0,
5122 .max_header_size = MAX_SMB2_HDR_SIZE,
5123 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
5124 .lock_cmd = SMB2_LOCK,
5126 .cap_nt_find = SMB2_NT_FIND,
5127 .cap_large_files = SMB2_LARGE_FILES,
5128 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
5129 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
5130 .create_lease_size = sizeof(struct create_lease_v2),
5133 struct smb_version_values smbdefault_values = {
5134 .version_string = SMBDEFAULT_VERSION_STRING,
5135 .protocol_id = SMB302_PROT_ID, /* doesn't matter, send protocol array */
5136 .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,
5137 .large_lock_type = 0,
5138 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
5139 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
5140 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
5141 .header_size = sizeof(struct smb2_sync_hdr),
5142 .header_preamble_size = 0,
5143 .max_header_size = MAX_SMB2_HDR_SIZE,
5144 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
5145 .lock_cmd = SMB2_LOCK,
5147 .cap_nt_find = SMB2_NT_FIND,
5148 .cap_large_files = SMB2_LARGE_FILES,
5149 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
5150 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
5151 .create_lease_size = sizeof(struct create_lease_v2),
5154 struct smb_version_values smb30_values = {
5155 .version_string = SMB30_VERSION_STRING,
5156 .protocol_id = SMB30_PROT_ID,
5157 .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,
5158 .large_lock_type = 0,
5159 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
5160 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
5161 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
5162 .header_size = sizeof(struct smb2_sync_hdr),
5163 .header_preamble_size = 0,
5164 .max_header_size = MAX_SMB2_HDR_SIZE,
5165 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
5166 .lock_cmd = SMB2_LOCK,
5168 .cap_nt_find = SMB2_NT_FIND,
5169 .cap_large_files = SMB2_LARGE_FILES,
5170 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
5171 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
5172 .create_lease_size = sizeof(struct create_lease_v2),
5175 struct smb_version_values smb302_values = {
5176 .version_string = SMB302_VERSION_STRING,
5177 .protocol_id = SMB302_PROT_ID,
5178 .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,
5179 .large_lock_type = 0,
5180 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
5181 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
5182 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
5183 .header_size = sizeof(struct smb2_sync_hdr),
5184 .header_preamble_size = 0,
5185 .max_header_size = MAX_SMB2_HDR_SIZE,
5186 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
5187 .lock_cmd = SMB2_LOCK,
5189 .cap_nt_find = SMB2_NT_FIND,
5190 .cap_large_files = SMB2_LARGE_FILES,
5191 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
5192 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
5193 .create_lease_size = sizeof(struct create_lease_v2),
5196 struct smb_version_values smb311_values = {
5197 .version_string = SMB311_VERSION_STRING,
5198 .protocol_id = SMB311_PROT_ID,
5199 .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,
5200 .large_lock_type = 0,
5201 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
5202 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
5203 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
5204 .header_size = sizeof(struct smb2_sync_hdr),
5205 .header_preamble_size = 0,
5206 .max_header_size = MAX_SMB2_HDR_SIZE,
5207 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
5208 .lock_cmd = SMB2_LOCK,
5210 .cap_nt_find = SMB2_NT_FIND,
5211 .cap_large_files = SMB2_LARGE_FILES,
5212 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
5213 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
5214 .create_lease_size = sizeof(struct create_lease_v2),