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 atomic_inc(&tcon->num_remote_opens);
2227 qd_rsp = (struct smb2_query_directory_rsp *)rsp_iov[1].iov_base;
2228 if (qd_rsp->sync_hdr.Status == STATUS_NO_MORE_FILES) {
2229 trace_smb3_query_dir_done(xid, fid->persistent_fid,
2230 tcon->tid, tcon->ses->Suid, 0, 0);
2231 srch_inf->endOfSearch = true;
2236 rc = smb2_parse_query_directory(tcon, &rsp_iov[1], resp_buftype[1],
2239 trace_smb3_query_dir_err(xid, fid->persistent_fid, tcon->tid,
2240 tcon->ses->Suid, 0, 0, rc);
2243 resp_buftype[1] = CIFS_NO_BUFFER;
2245 trace_smb3_query_dir_done(xid, fid->persistent_fid, tcon->tid,
2246 tcon->ses->Suid, 0, srch_inf->entries_in_buffer);
2250 SMB2_open_free(&rqst[0]);
2251 SMB2_query_directory_free(&rqst[1]);
2252 free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base);
2253 free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base);
2258 smb2_query_dir_next(const unsigned int xid, struct cifs_tcon *tcon,
2259 struct cifs_fid *fid, __u16 search_flags,
2260 struct cifs_search_info *srch_inf)
2262 return SMB2_query_directory(xid, tcon, fid->persistent_fid,
2263 fid->volatile_fid, 0, srch_inf);
2267 smb2_close_dir(const unsigned int xid, struct cifs_tcon *tcon,
2268 struct cifs_fid *fid)
2270 return SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
2274 * If we negotiate SMB2 protocol and get STATUS_PENDING - update
2275 * the number of credits and return true. Otherwise - return false.
2278 smb2_is_status_pending(char *buf, struct TCP_Server_Info *server)
2280 struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)buf;
2282 if (shdr->Status != STATUS_PENDING)
2285 if (shdr->CreditRequest) {
2286 spin_lock(&server->req_lock);
2287 server->credits += le16_to_cpu(shdr->CreditRequest);
2288 spin_unlock(&server->req_lock);
2289 wake_up(&server->request_q);
2296 smb2_is_session_expired(char *buf)
2298 struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)buf;
2300 if (shdr->Status != STATUS_NETWORK_SESSION_EXPIRED &&
2301 shdr->Status != STATUS_USER_SESSION_DELETED)
2304 trace_smb3_ses_expired(shdr->TreeId, shdr->SessionId,
2305 le16_to_cpu(shdr->Command),
2306 le64_to_cpu(shdr->MessageId));
2307 cifs_dbg(FYI, "Session expired or deleted\n");
2313 smb2_oplock_response(struct cifs_tcon *tcon, struct cifs_fid *fid,
2314 struct cifsInodeInfo *cinode)
2316 if (tcon->ses->server->capabilities & SMB2_GLOBAL_CAP_LEASING)
2317 return SMB2_lease_break(0, tcon, cinode->lease_key,
2318 smb2_get_lease_state(cinode));
2320 return SMB2_oplock_break(0, tcon, fid->persistent_fid,
2322 CIFS_CACHE_READ(cinode) ? 1 : 0);
2326 smb2_set_related(struct smb_rqst *rqst)
2328 struct smb2_sync_hdr *shdr;
2330 shdr = (struct smb2_sync_hdr *)(rqst->rq_iov[0].iov_base);
2332 cifs_dbg(FYI, "shdr NULL in smb2_set_related\n");
2335 shdr->Flags |= SMB2_FLAGS_RELATED_OPERATIONS;
2338 char smb2_padding[7] = {0, 0, 0, 0, 0, 0, 0};
2341 smb2_set_next_command(struct cifs_tcon *tcon, struct smb_rqst *rqst)
2343 struct smb2_sync_hdr *shdr;
2344 struct cifs_ses *ses = tcon->ses;
2345 struct TCP_Server_Info *server = ses->server;
2346 unsigned long len = smb_rqst_len(server, rqst);
2349 shdr = (struct smb2_sync_hdr *)(rqst->rq_iov[0].iov_base);
2351 cifs_dbg(FYI, "shdr NULL in smb2_set_next_command\n");
2355 /* SMB headers in a compound are 8 byte aligned. */
2357 /* No padding needed */
2361 num_padding = 8 - (len & 7);
2362 if (!smb3_encryption_required(tcon)) {
2364 * If we do not have encryption then we can just add an extra
2365 * iov for the padding.
2367 rqst->rq_iov[rqst->rq_nvec].iov_base = smb2_padding;
2368 rqst->rq_iov[rqst->rq_nvec].iov_len = num_padding;
2373 * We can not add a small padding iov for the encryption case
2374 * because the encryption framework can not handle the padding
2376 * We have to flatten this into a single buffer and add
2377 * the padding to it.
2379 for (i = 1; i < rqst->rq_nvec; i++) {
2380 memcpy(rqst->rq_iov[0].iov_base +
2381 rqst->rq_iov[0].iov_len,
2382 rqst->rq_iov[i].iov_base,
2383 rqst->rq_iov[i].iov_len);
2384 rqst->rq_iov[0].iov_len += rqst->rq_iov[i].iov_len;
2386 memset(rqst->rq_iov[0].iov_base + rqst->rq_iov[0].iov_len,
2388 rqst->rq_iov[0].iov_len += num_padding;
2394 shdr->NextCommand = cpu_to_le32(len);
2398 * Passes the query info response back to the caller on success.
2399 * Caller need to free this with free_rsp_buf().
2402 smb2_query_info_compound(const unsigned int xid, struct cifs_tcon *tcon,
2403 __le16 *utf16_path, u32 desired_access,
2404 u32 class, u32 type, u32 output_len,
2405 struct kvec *rsp, int *buftype,
2406 struct cifs_sb_info *cifs_sb)
2408 struct cifs_ses *ses = tcon->ses;
2410 struct smb_rqst rqst[3];
2411 int resp_buftype[3];
2412 struct kvec rsp_iov[3];
2413 struct kvec open_iov[SMB2_CREATE_IOV_SIZE];
2414 struct kvec qi_iov[1];
2415 struct kvec close_iov[1];
2416 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
2417 struct cifs_open_parms oparms;
2418 struct cifs_fid fid;
2421 if (smb3_encryption_required(tcon))
2422 flags |= CIFS_TRANSFORM_REQ;
2424 memset(rqst, 0, sizeof(rqst));
2425 resp_buftype[0] = resp_buftype[1] = resp_buftype[2] = CIFS_NO_BUFFER;
2426 memset(rsp_iov, 0, sizeof(rsp_iov));
2428 memset(&open_iov, 0, sizeof(open_iov));
2429 rqst[0].rq_iov = open_iov;
2430 rqst[0].rq_nvec = SMB2_CREATE_IOV_SIZE;
2433 oparms.desired_access = desired_access;
2434 oparms.disposition = FILE_OPEN;
2435 oparms.create_options = cifs_create_options(cifs_sb, 0);
2437 oparms.reconnect = false;
2439 rc = SMB2_open_init(tcon, &rqst[0], &oplock, &oparms, utf16_path);
2442 smb2_set_next_command(tcon, &rqst[0]);
2444 memset(&qi_iov, 0, sizeof(qi_iov));
2445 rqst[1].rq_iov = qi_iov;
2446 rqst[1].rq_nvec = 1;
2448 rc = SMB2_query_info_init(tcon, &rqst[1], COMPOUND_FID, COMPOUND_FID,
2454 smb2_set_next_command(tcon, &rqst[1]);
2455 smb2_set_related(&rqst[1]);
2457 memset(&close_iov, 0, sizeof(close_iov));
2458 rqst[2].rq_iov = close_iov;
2459 rqst[2].rq_nvec = 1;
2461 rc = SMB2_close_init(tcon, &rqst[2], COMPOUND_FID, COMPOUND_FID, false);
2464 smb2_set_related(&rqst[2]);
2466 rc = compound_send_recv(xid, ses, flags, 3, rqst,
2467 resp_buftype, rsp_iov);
2469 free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base);
2470 if (rc == -EREMCHG) {
2471 tcon->need_reconnect = true;
2472 printk_once(KERN_WARNING "server share %s deleted\n",
2478 *buftype = resp_buftype[1];
2481 SMB2_open_free(&rqst[0]);
2482 SMB2_query_info_free(&rqst[1]);
2483 SMB2_close_free(&rqst[2]);
2484 free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base);
2485 free_rsp_buf(resp_buftype[2], rsp_iov[2].iov_base);
2490 smb2_queryfs(const unsigned int xid, struct cifs_tcon *tcon,
2491 struct cifs_sb_info *cifs_sb, struct kstatfs *buf)
2493 struct smb2_query_info_rsp *rsp;
2494 struct smb2_fs_full_size_info *info = NULL;
2495 __le16 utf16_path = 0; /* Null - open root of share */
2496 struct kvec rsp_iov = {NULL, 0};
2497 int buftype = CIFS_NO_BUFFER;
2501 rc = smb2_query_info_compound(xid, tcon, &utf16_path,
2502 FILE_READ_ATTRIBUTES,
2503 FS_FULL_SIZE_INFORMATION,
2504 SMB2_O_INFO_FILESYSTEM,
2505 sizeof(struct smb2_fs_full_size_info),
2506 &rsp_iov, &buftype, cifs_sb);
2510 rsp = (struct smb2_query_info_rsp *)rsp_iov.iov_base;
2511 buf->f_type = SMB2_MAGIC_NUMBER;
2512 info = (struct smb2_fs_full_size_info *)(
2513 le16_to_cpu(rsp->OutputBufferOffset) + (char *)rsp);
2514 rc = smb2_validate_iov(le16_to_cpu(rsp->OutputBufferOffset),
2515 le32_to_cpu(rsp->OutputBufferLength),
2517 sizeof(struct smb2_fs_full_size_info));
2519 smb2_copy_fs_info_to_kstatfs(info, buf);
2522 free_rsp_buf(buftype, rsp_iov.iov_base);
2527 smb311_queryfs(const unsigned int xid, struct cifs_tcon *tcon,
2528 struct cifs_sb_info *cifs_sb, struct kstatfs *buf)
2531 __le16 srch_path = 0; /* Null - open root of share */
2532 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
2533 struct cifs_open_parms oparms;
2534 struct cifs_fid fid;
2536 if (!tcon->posix_extensions)
2537 return smb2_queryfs(xid, tcon, cifs_sb, buf);
2540 oparms.desired_access = FILE_READ_ATTRIBUTES;
2541 oparms.disposition = FILE_OPEN;
2542 oparms.create_options = cifs_create_options(cifs_sb, 0);
2544 oparms.reconnect = false;
2546 rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL, NULL);
2550 rc = SMB311_posix_qfs_info(xid, tcon, fid.persistent_fid,
2551 fid.volatile_fid, buf);
2552 buf->f_type = SMB2_MAGIC_NUMBER;
2553 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
2558 smb2_compare_fids(struct cifsFileInfo *ob1, struct cifsFileInfo *ob2)
2560 return ob1->fid.persistent_fid == ob2->fid.persistent_fid &&
2561 ob1->fid.volatile_fid == ob2->fid.volatile_fid;
2565 smb2_mand_lock(const unsigned int xid, struct cifsFileInfo *cfile, __u64 offset,
2566 __u64 length, __u32 type, int lock, int unlock, bool wait)
2568 if (unlock && !lock)
2569 type = SMB2_LOCKFLAG_UNLOCK;
2570 return SMB2_lock(xid, tlink_tcon(cfile->tlink),
2571 cfile->fid.persistent_fid, cfile->fid.volatile_fid,
2572 current->tgid, length, offset, type, wait);
2576 smb2_get_lease_key(struct inode *inode, struct cifs_fid *fid)
2578 memcpy(fid->lease_key, CIFS_I(inode)->lease_key, SMB2_LEASE_KEY_SIZE);
2582 smb2_set_lease_key(struct inode *inode, struct cifs_fid *fid)
2584 memcpy(CIFS_I(inode)->lease_key, fid->lease_key, SMB2_LEASE_KEY_SIZE);
2588 smb2_new_lease_key(struct cifs_fid *fid)
2590 generate_random_uuid(fid->lease_key);
2594 smb2_get_dfs_refer(const unsigned int xid, struct cifs_ses *ses,
2595 const char *search_name,
2596 struct dfs_info3_param **target_nodes,
2597 unsigned int *num_of_nodes,
2598 const struct nls_table *nls_codepage, int remap)
2601 __le16 *utf16_path = NULL;
2602 int utf16_path_len = 0;
2603 struct cifs_tcon *tcon;
2604 struct fsctl_get_dfs_referral_req *dfs_req = NULL;
2605 struct get_dfs_referral_rsp *dfs_rsp = NULL;
2606 u32 dfs_req_size = 0, dfs_rsp_size = 0;
2608 cifs_dbg(FYI, "%s: path: %s\n", __func__, search_name);
2611 * Try to use the IPC tcon, otherwise just use any
2613 tcon = ses->tcon_ipc;
2615 spin_lock(&cifs_tcp_ses_lock);
2616 tcon = list_first_entry_or_null(&ses->tcon_list,
2621 spin_unlock(&cifs_tcp_ses_lock);
2625 cifs_dbg(VFS, "session %p has no tcon available for a dfs referral request\n",
2631 utf16_path = cifs_strndup_to_utf16(search_name, PATH_MAX,
2633 nls_codepage, remap);
2639 dfs_req_size = sizeof(*dfs_req) + utf16_path_len;
2640 dfs_req = kzalloc(dfs_req_size, GFP_KERNEL);
2646 /* Highest DFS referral version understood */
2647 dfs_req->MaxReferralLevel = DFS_VERSION;
2649 /* Path to resolve in an UTF-16 null-terminated string */
2650 memcpy(dfs_req->RequestFileName, utf16_path, utf16_path_len);
2653 rc = SMB2_ioctl(xid, tcon, NO_FILE_ID, NO_FILE_ID,
2654 FSCTL_DFS_GET_REFERRALS,
2655 true /* is_fsctl */,
2656 (char *)dfs_req, dfs_req_size, CIFSMaxBufSize,
2657 (char **)&dfs_rsp, &dfs_rsp_size);
2658 } while (rc == -EAGAIN);
2661 if ((rc != -ENOENT) && (rc != -EOPNOTSUPP))
2662 cifs_tcon_dbg(VFS, "ioctl error in %s rc=%d\n", __func__, rc);
2666 rc = parse_dfs_referrals(dfs_rsp, dfs_rsp_size,
2667 num_of_nodes, target_nodes,
2668 nls_codepage, remap, search_name,
2669 true /* is_unicode */);
2671 cifs_tcon_dbg(VFS, "parse error in %s rc=%d\n", __func__, rc);
2676 if (tcon && !tcon->ipc) {
2677 /* ipc tcons are not refcounted */
2678 spin_lock(&cifs_tcp_ses_lock);
2680 spin_unlock(&cifs_tcp_ses_lock);
2689 parse_reparse_posix(struct reparse_posix_data *symlink_buf,
2690 u32 plen, char **target_path,
2691 struct cifs_sb_info *cifs_sb)
2695 /* See MS-FSCC 2.1.2.6 for the 'NFS' style reparse tags */
2696 len = le16_to_cpu(symlink_buf->ReparseDataLength);
2698 if (le64_to_cpu(symlink_buf->InodeType) != NFS_SPECFILE_LNK) {
2699 cifs_dbg(VFS, "%lld not a supported symlink type\n",
2700 le64_to_cpu(symlink_buf->InodeType));
2704 *target_path = cifs_strndup_from_utf16(
2705 symlink_buf->PathBuffer,
2706 len, true, cifs_sb->local_nls);
2707 if (!(*target_path))
2710 convert_delimiter(*target_path, '/');
2711 cifs_dbg(FYI, "%s: target path: %s\n", __func__, *target_path);
2717 parse_reparse_symlink(struct reparse_symlink_data_buffer *symlink_buf,
2718 u32 plen, char **target_path,
2719 struct cifs_sb_info *cifs_sb)
2721 unsigned int sub_len;
2722 unsigned int sub_offset;
2724 /* We handle Symbolic Link reparse tag here. See: MS-FSCC 2.1.2.4 */
2726 sub_offset = le16_to_cpu(symlink_buf->SubstituteNameOffset);
2727 sub_len = le16_to_cpu(symlink_buf->SubstituteNameLength);
2728 if (sub_offset + 20 > plen ||
2729 sub_offset + sub_len + 20 > plen) {
2730 cifs_dbg(VFS, "srv returned malformed symlink buffer\n");
2734 *target_path = cifs_strndup_from_utf16(
2735 symlink_buf->PathBuffer + sub_offset,
2736 sub_len, true, cifs_sb->local_nls);
2737 if (!(*target_path))
2740 convert_delimiter(*target_path, '/');
2741 cifs_dbg(FYI, "%s: target path: %s\n", __func__, *target_path);
2747 parse_reparse_point(struct reparse_data_buffer *buf,
2748 u32 plen, char **target_path,
2749 struct cifs_sb_info *cifs_sb)
2751 if (plen < sizeof(struct reparse_data_buffer)) {
2752 cifs_dbg(VFS, "reparse buffer is too small. Must be "
2753 "at least 8 bytes but was %d\n", plen);
2757 if (plen < le16_to_cpu(buf->ReparseDataLength) +
2758 sizeof(struct reparse_data_buffer)) {
2759 cifs_dbg(VFS, "srv returned invalid reparse buf "
2760 "length: %d\n", plen);
2764 /* See MS-FSCC 2.1.2 */
2765 switch (le32_to_cpu(buf->ReparseTag)) {
2766 case IO_REPARSE_TAG_NFS:
2767 return parse_reparse_posix(
2768 (struct reparse_posix_data *)buf,
2769 plen, target_path, cifs_sb);
2770 case IO_REPARSE_TAG_SYMLINK:
2771 return parse_reparse_symlink(
2772 (struct reparse_symlink_data_buffer *)buf,
2773 plen, target_path, cifs_sb);
2775 cifs_dbg(VFS, "srv returned unknown symlink buffer "
2776 "tag:0x%08x\n", le32_to_cpu(buf->ReparseTag));
2781 #define SMB2_SYMLINK_STRUCT_SIZE \
2782 (sizeof(struct smb2_err_rsp) - 1 + sizeof(struct smb2_symlink_err_rsp))
2785 smb2_query_symlink(const unsigned int xid, struct cifs_tcon *tcon,
2786 struct cifs_sb_info *cifs_sb, const char *full_path,
2787 char **target_path, bool is_reparse_point)
2790 __le16 *utf16_path = NULL;
2791 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
2792 struct cifs_open_parms oparms;
2793 struct cifs_fid fid;
2794 struct kvec err_iov = {NULL, 0};
2795 struct smb2_err_rsp *err_buf = NULL;
2796 struct smb2_symlink_err_rsp *symlink;
2797 unsigned int sub_len;
2798 unsigned int sub_offset;
2799 unsigned int print_len;
2800 unsigned int print_offset;
2802 struct smb_rqst rqst[3];
2803 int resp_buftype[3];
2804 struct kvec rsp_iov[3];
2805 struct kvec open_iov[SMB2_CREATE_IOV_SIZE];
2806 struct kvec io_iov[SMB2_IOCTL_IOV_SIZE];
2807 struct kvec close_iov[1];
2808 struct smb2_create_rsp *create_rsp;
2809 struct smb2_ioctl_rsp *ioctl_rsp;
2810 struct reparse_data_buffer *reparse_buf;
2811 int create_options = is_reparse_point ? OPEN_REPARSE_POINT : 0;
2814 cifs_dbg(FYI, "%s: path: %s\n", __func__, full_path);
2816 *target_path = NULL;
2818 if (smb3_encryption_required(tcon))
2819 flags |= CIFS_TRANSFORM_REQ;
2821 memset(rqst, 0, sizeof(rqst));
2822 resp_buftype[0] = resp_buftype[1] = resp_buftype[2] = CIFS_NO_BUFFER;
2823 memset(rsp_iov, 0, sizeof(rsp_iov));
2825 utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb);
2830 memset(&open_iov, 0, sizeof(open_iov));
2831 rqst[0].rq_iov = open_iov;
2832 rqst[0].rq_nvec = SMB2_CREATE_IOV_SIZE;
2834 memset(&oparms, 0, sizeof(oparms));
2836 oparms.desired_access = FILE_READ_ATTRIBUTES;
2837 oparms.disposition = FILE_OPEN;
2838 oparms.create_options = cifs_create_options(cifs_sb, create_options);
2840 oparms.reconnect = false;
2842 rc = SMB2_open_init(tcon, &rqst[0], &oplock, &oparms, utf16_path);
2845 smb2_set_next_command(tcon, &rqst[0]);
2849 memset(&io_iov, 0, sizeof(io_iov));
2850 rqst[1].rq_iov = io_iov;
2851 rqst[1].rq_nvec = SMB2_IOCTL_IOV_SIZE;
2853 rc = SMB2_ioctl_init(tcon, &rqst[1], fid.persistent_fid,
2854 fid.volatile_fid, FSCTL_GET_REPARSE_POINT,
2855 true /* is_fctl */, NULL, 0,
2857 MAX_SMB2_CREATE_RESPONSE_SIZE -
2858 MAX_SMB2_CLOSE_RESPONSE_SIZE);
2862 smb2_set_next_command(tcon, &rqst[1]);
2863 smb2_set_related(&rqst[1]);
2867 memset(&close_iov, 0, sizeof(close_iov));
2868 rqst[2].rq_iov = close_iov;
2869 rqst[2].rq_nvec = 1;
2871 rc = SMB2_close_init(tcon, &rqst[2], COMPOUND_FID, COMPOUND_FID, false);
2875 smb2_set_related(&rqst[2]);
2877 rc = compound_send_recv(xid, tcon->ses, flags, 3, rqst,
2878 resp_buftype, rsp_iov);
2880 create_rsp = rsp_iov[0].iov_base;
2881 if (create_rsp && create_rsp->sync_hdr.Status)
2882 err_iov = rsp_iov[0];
2883 ioctl_rsp = rsp_iov[1].iov_base;
2886 * Open was successful and we got an ioctl response.
2888 if ((rc == 0) && (is_reparse_point)) {
2889 /* See MS-FSCC 2.3.23 */
2891 reparse_buf = (struct reparse_data_buffer *)
2892 ((char *)ioctl_rsp +
2893 le32_to_cpu(ioctl_rsp->OutputOffset));
2894 plen = le32_to_cpu(ioctl_rsp->OutputCount);
2896 if (plen + le32_to_cpu(ioctl_rsp->OutputOffset) >
2897 rsp_iov[1].iov_len) {
2898 cifs_tcon_dbg(VFS, "srv returned invalid ioctl len: %d\n",
2904 rc = parse_reparse_point(reparse_buf, plen, target_path,
2909 if (!rc || !err_iov.iov_base) {
2914 err_buf = err_iov.iov_base;
2915 if (le32_to_cpu(err_buf->ByteCount) < sizeof(struct smb2_symlink_err_rsp) ||
2916 err_iov.iov_len < SMB2_SYMLINK_STRUCT_SIZE) {
2921 symlink = (struct smb2_symlink_err_rsp *)err_buf->ErrorData;
2922 if (le32_to_cpu(symlink->SymLinkErrorTag) != SYMLINK_ERROR_TAG ||
2923 le32_to_cpu(symlink->ReparseTag) != IO_REPARSE_TAG_SYMLINK) {
2928 /* open must fail on symlink - reset rc */
2930 sub_len = le16_to_cpu(symlink->SubstituteNameLength);
2931 sub_offset = le16_to_cpu(symlink->SubstituteNameOffset);
2932 print_len = le16_to_cpu(symlink->PrintNameLength);
2933 print_offset = le16_to_cpu(symlink->PrintNameOffset);
2935 if (err_iov.iov_len < SMB2_SYMLINK_STRUCT_SIZE + sub_offset + sub_len) {
2940 if (err_iov.iov_len <
2941 SMB2_SYMLINK_STRUCT_SIZE + print_offset + print_len) {
2946 *target_path = cifs_strndup_from_utf16(
2947 (char *)symlink->PathBuffer + sub_offset,
2948 sub_len, true, cifs_sb->local_nls);
2949 if (!(*target_path)) {
2953 convert_delimiter(*target_path, '/');
2954 cifs_dbg(FYI, "%s: target path: %s\n", __func__, *target_path);
2957 cifs_dbg(FYI, "query symlink rc %d\n", rc);
2959 SMB2_open_free(&rqst[0]);
2960 SMB2_ioctl_free(&rqst[1]);
2961 SMB2_close_free(&rqst[2]);
2962 free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base);
2963 free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base);
2964 free_rsp_buf(resp_buftype[2], rsp_iov[2].iov_base);
2968 static struct cifs_ntsd *
2969 get_smb2_acl_by_fid(struct cifs_sb_info *cifs_sb,
2970 const struct cifs_fid *cifsfid, u32 *pacllen)
2972 struct cifs_ntsd *pntsd = NULL;
2974 int rc = -EOPNOTSUPP;
2975 struct tcon_link *tlink = cifs_sb_tlink(cifs_sb);
2978 return ERR_CAST(tlink);
2981 cifs_dbg(FYI, "trying to get acl\n");
2983 rc = SMB2_query_acl(xid, tlink_tcon(tlink), cifsfid->persistent_fid,
2984 cifsfid->volatile_fid, (void **)&pntsd, pacllen);
2987 cifs_put_tlink(tlink);
2989 cifs_dbg(FYI, "%s: rc = %d ACL len %d\n", __func__, rc, *pacllen);
2996 static struct cifs_ntsd *
2997 get_smb2_acl_by_path(struct cifs_sb_info *cifs_sb,
2998 const char *path, u32 *pacllen)
3000 struct cifs_ntsd *pntsd = NULL;
3001 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
3004 struct cifs_tcon *tcon;
3005 struct tcon_link *tlink = cifs_sb_tlink(cifs_sb);
3006 struct cifs_fid fid;
3007 struct cifs_open_parms oparms;
3010 cifs_dbg(FYI, "get smb3 acl for path %s\n", path);
3012 return ERR_CAST(tlink);
3014 tcon = tlink_tcon(tlink);
3017 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
3025 oparms.desired_access = READ_CONTROL;
3026 oparms.disposition = FILE_OPEN;
3027 oparms.create_options = cifs_create_options(cifs_sb, 0);
3029 oparms.reconnect = false;
3031 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL, NULL);
3034 rc = SMB2_query_acl(xid, tlink_tcon(tlink), fid.persistent_fid,
3035 fid.volatile_fid, (void **)&pntsd, pacllen);
3036 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
3039 cifs_put_tlink(tlink);
3042 cifs_dbg(FYI, "%s: rc = %d ACL len %d\n", __func__, rc, *pacllen);
3049 set_smb2_acl(struct cifs_ntsd *pnntsd, __u32 acllen,
3050 struct inode *inode, const char *path, int aclflag)
3052 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
3054 int rc, access_flags = 0;
3055 struct cifs_tcon *tcon;
3056 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
3057 struct tcon_link *tlink = cifs_sb_tlink(cifs_sb);
3058 struct cifs_fid fid;
3059 struct cifs_open_parms oparms;
3062 cifs_dbg(FYI, "set smb3 acl for path %s\n", path);
3064 return PTR_ERR(tlink);
3066 tcon = tlink_tcon(tlink);
3069 if (aclflag == CIFS_ACL_OWNER || aclflag == CIFS_ACL_GROUP)
3070 access_flags = WRITE_OWNER;
3072 access_flags = WRITE_DAC;
3074 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
3082 oparms.desired_access = access_flags;
3083 oparms.create_options = cifs_create_options(cifs_sb, 0);
3084 oparms.disposition = FILE_OPEN;
3087 oparms.reconnect = false;
3089 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL, NULL);
3092 rc = SMB2_set_acl(xid, tlink_tcon(tlink), fid.persistent_fid,
3093 fid.volatile_fid, pnntsd, acllen, aclflag);
3094 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
3097 cifs_put_tlink(tlink);
3102 /* Retrieve an ACL from the server */
3103 static struct cifs_ntsd *
3104 get_smb2_acl(struct cifs_sb_info *cifs_sb,
3105 struct inode *inode, const char *path,
3108 struct cifs_ntsd *pntsd = NULL;
3109 struct cifsFileInfo *open_file = NULL;
3112 open_file = find_readable_file(CIFS_I(inode), true);
3114 return get_smb2_acl_by_path(cifs_sb, path, pacllen);
3116 pntsd = get_smb2_acl_by_fid(cifs_sb, &open_file->fid, pacllen);
3117 cifsFileInfo_put(open_file);
3121 static long smb3_zero_range(struct file *file, struct cifs_tcon *tcon,
3122 loff_t offset, loff_t len, bool keep_size)
3124 struct cifs_ses *ses = tcon->ses;
3125 struct inode *inode;
3126 struct cifsInodeInfo *cifsi;
3127 struct cifsFileInfo *cfile = file->private_data;
3128 struct file_zero_data_information fsctl_buf;
3135 inode = d_inode(cfile->dentry);
3136 cifsi = CIFS_I(inode);
3138 trace_smb3_zero_enter(xid, cfile->fid.persistent_fid, tcon->tid,
3139 ses->Suid, offset, len);
3142 /* if file not oplocked can't be sure whether asking to extend size */
3143 if (!CIFS_CACHE_READ(cifsi))
3144 if (keep_size == false) {
3146 trace_smb3_zero_err(xid, cfile->fid.persistent_fid,
3147 tcon->tid, ses->Suid, offset, len, rc);
3152 cifs_dbg(FYI, "Offset %lld len %lld\n", offset, len);
3154 fsctl_buf.FileOffset = cpu_to_le64(offset);
3155 fsctl_buf.BeyondFinalZero = cpu_to_le64(offset + len);
3157 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
3158 cfile->fid.volatile_fid, FSCTL_SET_ZERO_DATA, true,
3160 sizeof(struct file_zero_data_information),
3163 goto zero_range_exit;
3166 * do we also need to change the size of the file?
3168 if (keep_size == false && i_size_read(inode) < offset + len) {
3169 eof = cpu_to_le64(offset + len);
3170 rc = SMB2_set_eof(xid, tcon, cfile->fid.persistent_fid,
3171 cfile->fid.volatile_fid, cfile->pid, &eof);
3177 trace_smb3_zero_err(xid, cfile->fid.persistent_fid, tcon->tid,
3178 ses->Suid, offset, len, rc);
3180 trace_smb3_zero_done(xid, cfile->fid.persistent_fid, tcon->tid,
3181 ses->Suid, offset, len);
3185 static long smb3_punch_hole(struct file *file, struct cifs_tcon *tcon,
3186 loff_t offset, loff_t len)
3188 struct inode *inode;
3189 struct cifsFileInfo *cfile = file->private_data;
3190 struct file_zero_data_information fsctl_buf;
3193 __u8 set_sparse = 1;
3197 inode = d_inode(cfile->dentry);
3199 /* Need to make file sparse, if not already, before freeing range. */
3200 /* Consider adding equivalent for compressed since it could also work */
3201 if (!smb2_set_sparse(xid, tcon, cfile, inode, set_sparse)) {
3207 cifs_dbg(FYI, "Offset %lld len %lld\n", offset, len);
3209 fsctl_buf.FileOffset = cpu_to_le64(offset);
3210 fsctl_buf.BeyondFinalZero = cpu_to_le64(offset + len);
3212 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
3213 cfile->fid.volatile_fid, FSCTL_SET_ZERO_DATA,
3214 true /* is_fctl */, (char *)&fsctl_buf,
3215 sizeof(struct file_zero_data_information),
3216 CIFSMaxBufSize, NULL, NULL);
3221 static long smb3_simple_falloc(struct file *file, struct cifs_tcon *tcon,
3222 loff_t off, loff_t len, bool keep_size)
3224 struct inode *inode;
3225 struct cifsInodeInfo *cifsi;
3226 struct cifsFileInfo *cfile = file->private_data;
3227 long rc = -EOPNOTSUPP;
3233 inode = d_inode(cfile->dentry);
3234 cifsi = CIFS_I(inode);
3236 trace_smb3_falloc_enter(xid, cfile->fid.persistent_fid, tcon->tid,
3237 tcon->ses->Suid, off, len);
3238 /* if file not oplocked can't be sure whether asking to extend size */
3239 if (!CIFS_CACHE_READ(cifsi))
3240 if (keep_size == false) {
3241 trace_smb3_falloc_err(xid, cfile->fid.persistent_fid,
3242 tcon->tid, tcon->ses->Suid, off, len, rc);
3248 * Extending the file
3250 if ((keep_size == false) && i_size_read(inode) < off + len) {
3251 if ((cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) == 0)
3252 smb2_set_sparse(xid, tcon, cfile, inode, false);
3254 eof = cpu_to_le64(off + len);
3255 rc = SMB2_set_eof(xid, tcon, cfile->fid.persistent_fid,
3256 cfile->fid.volatile_fid, cfile->pid, &eof);
3258 cifsi->server_eof = off + len;
3259 cifs_setsize(inode, off + len);
3260 cifs_truncate_page(inode->i_mapping, inode->i_size);
3261 truncate_setsize(inode, off + len);
3267 * Files are non-sparse by default so falloc may be a no-op
3268 * Must check if file sparse. If not sparse, and since we are not
3269 * extending then no need to do anything since file already allocated
3271 if ((cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) == 0) {
3276 if ((keep_size == true) || (i_size_read(inode) >= off + len)) {
3278 * Check if falloc starts within first few pages of file
3279 * and ends within a few pages of the end of file to
3280 * ensure that most of file is being forced to be
3281 * fallocated now. If so then setting whole file sparse
3282 * ie potentially making a few extra pages at the beginning
3283 * or end of the file non-sparse via set_sparse is harmless.
3285 if ((off > 8192) || (off + len + 8192 < i_size_read(inode))) {
3291 smb2_set_sparse(xid, tcon, cfile, inode, false);
3296 trace_smb3_falloc_err(xid, cfile->fid.persistent_fid, tcon->tid,
3297 tcon->ses->Suid, off, len, rc);
3299 trace_smb3_falloc_done(xid, cfile->fid.persistent_fid, tcon->tid,
3300 tcon->ses->Suid, off, len);
3306 static loff_t smb3_llseek(struct file *file, struct cifs_tcon *tcon, loff_t offset, int whence)
3308 struct cifsFileInfo *wrcfile, *cfile = file->private_data;
3309 struct cifsInodeInfo *cifsi;
3310 struct inode *inode;
3312 struct file_allocated_range_buffer in_data, *out_data = NULL;
3316 if (whence != SEEK_HOLE && whence != SEEK_DATA)
3317 return generic_file_llseek(file, offset, whence);
3319 inode = d_inode(cfile->dentry);
3320 cifsi = CIFS_I(inode);
3322 if (offset < 0 || offset >= i_size_read(inode))
3327 * We need to be sure that all dirty pages are written as they
3328 * might fill holes on the server.
3329 * Note that we also MUST flush any written pages since at least
3330 * some servers (Windows2016) will not reflect recent writes in
3331 * QUERY_ALLOCATED_RANGES until SMB2_flush is called.
3333 wrcfile = find_writable_file(cifsi, FIND_WR_ANY);
3335 filemap_write_and_wait(inode->i_mapping);
3336 smb2_flush_file(xid, tcon, &wrcfile->fid);
3337 cifsFileInfo_put(wrcfile);
3340 if (!(cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE)) {
3341 if (whence == SEEK_HOLE)
3342 offset = i_size_read(inode);
3346 in_data.file_offset = cpu_to_le64(offset);
3347 in_data.length = cpu_to_le64(i_size_read(inode));
3349 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
3350 cfile->fid.volatile_fid,
3351 FSCTL_QUERY_ALLOCATED_RANGES, true,
3352 (char *)&in_data, sizeof(in_data),
3353 sizeof(struct file_allocated_range_buffer),
3354 (char **)&out_data, &out_data_len);
3360 if (whence == SEEK_HOLE && out_data_len == 0)
3363 if (whence == SEEK_DATA && out_data_len == 0) {
3368 if (out_data_len < sizeof(struct file_allocated_range_buffer)) {
3372 if (whence == SEEK_DATA) {
3373 offset = le64_to_cpu(out_data->file_offset);
3376 if (offset < le64_to_cpu(out_data->file_offset))
3379 offset = le64_to_cpu(out_data->file_offset) + le64_to_cpu(out_data->length);
3385 return vfs_setpos(file, offset, inode->i_sb->s_maxbytes);
3390 static int smb3_fiemap(struct cifs_tcon *tcon,
3391 struct cifsFileInfo *cfile,
3392 struct fiemap_extent_info *fei, u64 start, u64 len)
3395 struct file_allocated_range_buffer in_data, *out_data;
3397 int i, num, rc, flags, last_blob;
3400 if (fiemap_check_flags(fei, FIEMAP_FLAG_SYNC))
3405 in_data.file_offset = cpu_to_le64(start);
3406 in_data.length = cpu_to_le64(len);
3408 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
3409 cfile->fid.volatile_fid,
3410 FSCTL_QUERY_ALLOCATED_RANGES, true,
3411 (char *)&in_data, sizeof(in_data),
3412 1024 * sizeof(struct file_allocated_range_buffer),
3413 (char **)&out_data, &out_data_len);
3422 if (out_data_len && out_data_len < sizeof(struct file_allocated_range_buffer)) {
3426 if (out_data_len % sizeof(struct file_allocated_range_buffer)) {
3431 num = out_data_len / sizeof(struct file_allocated_range_buffer);
3432 for (i = 0; i < num; i++) {
3434 if (i == num - 1 && last_blob)
3435 flags |= FIEMAP_EXTENT_LAST;
3437 rc = fiemap_fill_next_extent(fei,
3438 le64_to_cpu(out_data[i].file_offset),
3439 le64_to_cpu(out_data[i].file_offset),
3440 le64_to_cpu(out_data[i].length),
3451 next = le64_to_cpu(out_data[num - 1].file_offset) +
3452 le64_to_cpu(out_data[num - 1].length);
3453 len = len - (next - start);
3464 static long smb3_fallocate(struct file *file, struct cifs_tcon *tcon, int mode,
3465 loff_t off, loff_t len)
3467 /* KEEP_SIZE already checked for by do_fallocate */
3468 if (mode & FALLOC_FL_PUNCH_HOLE)
3469 return smb3_punch_hole(file, tcon, off, len);
3470 else if (mode & FALLOC_FL_ZERO_RANGE) {
3471 if (mode & FALLOC_FL_KEEP_SIZE)
3472 return smb3_zero_range(file, tcon, off, len, true);
3473 return smb3_zero_range(file, tcon, off, len, false);
3474 } else if (mode == FALLOC_FL_KEEP_SIZE)
3475 return smb3_simple_falloc(file, tcon, off, len, true);
3477 return smb3_simple_falloc(file, tcon, off, len, false);
3483 smb2_downgrade_oplock(struct TCP_Server_Info *server,
3484 struct cifsInodeInfo *cinode, __u32 oplock,
3485 unsigned int epoch, bool *purge_cache)
3487 server->ops->set_oplock_level(cinode, oplock, 0, NULL);
3491 smb21_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
3492 unsigned int epoch, bool *purge_cache);
3495 smb3_downgrade_oplock(struct TCP_Server_Info *server,
3496 struct cifsInodeInfo *cinode, __u32 oplock,
3497 unsigned int epoch, bool *purge_cache)
3499 unsigned int old_state = cinode->oplock;
3500 unsigned int old_epoch = cinode->epoch;
3501 unsigned int new_state;
3503 if (epoch > old_epoch) {
3504 smb21_set_oplock_level(cinode, oplock, 0, NULL);
3505 cinode->epoch = epoch;
3508 new_state = cinode->oplock;
3509 *purge_cache = false;
3511 if ((old_state & CIFS_CACHE_READ_FLG) != 0 &&
3512 (new_state & CIFS_CACHE_READ_FLG) == 0)
3513 *purge_cache = true;
3514 else if (old_state == new_state && (epoch - old_epoch > 1))
3515 *purge_cache = true;
3519 smb2_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
3520 unsigned int epoch, bool *purge_cache)
3523 if (oplock == SMB2_OPLOCK_LEVEL_NOCHANGE)
3525 if (oplock == SMB2_OPLOCK_LEVEL_BATCH) {
3526 cinode->oplock = CIFS_CACHE_RHW_FLG;
3527 cifs_dbg(FYI, "Batch Oplock granted on inode %p\n",
3528 &cinode->vfs_inode);
3529 } else if (oplock == SMB2_OPLOCK_LEVEL_EXCLUSIVE) {
3530 cinode->oplock = CIFS_CACHE_RW_FLG;
3531 cifs_dbg(FYI, "Exclusive Oplock granted on inode %p\n",
3532 &cinode->vfs_inode);
3533 } else if (oplock == SMB2_OPLOCK_LEVEL_II) {
3534 cinode->oplock = CIFS_CACHE_READ_FLG;
3535 cifs_dbg(FYI, "Level II Oplock granted on inode %p\n",
3536 &cinode->vfs_inode);
3542 smb21_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
3543 unsigned int epoch, bool *purge_cache)
3545 char message[5] = {0};
3546 unsigned int new_oplock = 0;
3549 if (oplock == SMB2_OPLOCK_LEVEL_NOCHANGE)
3552 /* Check if the server granted an oplock rather than a lease */
3553 if (oplock & SMB2_OPLOCK_LEVEL_EXCLUSIVE)
3554 return smb2_set_oplock_level(cinode, oplock, epoch,
3557 if (oplock & SMB2_LEASE_READ_CACHING_HE) {
3558 new_oplock |= CIFS_CACHE_READ_FLG;
3559 strcat(message, "R");
3561 if (oplock & SMB2_LEASE_HANDLE_CACHING_HE) {
3562 new_oplock |= CIFS_CACHE_HANDLE_FLG;
3563 strcat(message, "H");
3565 if (oplock & SMB2_LEASE_WRITE_CACHING_HE) {
3566 new_oplock |= CIFS_CACHE_WRITE_FLG;
3567 strcat(message, "W");
3570 strncpy(message, "None", sizeof(message));
3572 cinode->oplock = new_oplock;
3573 cifs_dbg(FYI, "%s Lease granted on inode %p\n", message,
3574 &cinode->vfs_inode);
3578 smb3_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
3579 unsigned int epoch, bool *purge_cache)
3581 unsigned int old_oplock = cinode->oplock;
3583 smb21_set_oplock_level(cinode, oplock, epoch, purge_cache);
3586 *purge_cache = false;
3587 if (old_oplock == CIFS_CACHE_READ_FLG) {
3588 if (cinode->oplock == CIFS_CACHE_READ_FLG &&
3589 (epoch - cinode->epoch > 0))
3590 *purge_cache = true;
3591 else if (cinode->oplock == CIFS_CACHE_RH_FLG &&
3592 (epoch - cinode->epoch > 1))
3593 *purge_cache = true;
3594 else if (cinode->oplock == CIFS_CACHE_RHW_FLG &&
3595 (epoch - cinode->epoch > 1))
3596 *purge_cache = true;
3597 else if (cinode->oplock == 0 &&
3598 (epoch - cinode->epoch > 0))
3599 *purge_cache = true;
3600 } else if (old_oplock == CIFS_CACHE_RH_FLG) {
3601 if (cinode->oplock == CIFS_CACHE_RH_FLG &&
3602 (epoch - cinode->epoch > 0))
3603 *purge_cache = true;
3604 else if (cinode->oplock == CIFS_CACHE_RHW_FLG &&
3605 (epoch - cinode->epoch > 1))
3606 *purge_cache = true;
3608 cinode->epoch = epoch;
3613 smb2_is_read_op(__u32 oplock)
3615 return oplock == SMB2_OPLOCK_LEVEL_II;
3619 smb21_is_read_op(__u32 oplock)
3621 return (oplock & SMB2_LEASE_READ_CACHING_HE) &&
3622 !(oplock & SMB2_LEASE_WRITE_CACHING_HE);
3626 map_oplock_to_lease(u8 oplock)
3628 if (oplock == SMB2_OPLOCK_LEVEL_EXCLUSIVE)
3629 return SMB2_LEASE_WRITE_CACHING | SMB2_LEASE_READ_CACHING;
3630 else if (oplock == SMB2_OPLOCK_LEVEL_II)
3631 return SMB2_LEASE_READ_CACHING;
3632 else if (oplock == SMB2_OPLOCK_LEVEL_BATCH)
3633 return SMB2_LEASE_HANDLE_CACHING | SMB2_LEASE_READ_CACHING |
3634 SMB2_LEASE_WRITE_CACHING;
3639 smb2_create_lease_buf(u8 *lease_key, u8 oplock)
3641 struct create_lease *buf;
3643 buf = kzalloc(sizeof(struct create_lease), GFP_KERNEL);
3647 memcpy(&buf->lcontext.LeaseKey, lease_key, SMB2_LEASE_KEY_SIZE);
3648 buf->lcontext.LeaseState = map_oplock_to_lease(oplock);
3650 buf->ccontext.DataOffset = cpu_to_le16(offsetof
3651 (struct create_lease, lcontext));
3652 buf->ccontext.DataLength = cpu_to_le32(sizeof(struct lease_context));
3653 buf->ccontext.NameOffset = cpu_to_le16(offsetof
3654 (struct create_lease, Name));
3655 buf->ccontext.NameLength = cpu_to_le16(4);
3656 /* SMB2_CREATE_REQUEST_LEASE is "RqLs" */
3665 smb3_create_lease_buf(u8 *lease_key, u8 oplock)
3667 struct create_lease_v2 *buf;
3669 buf = kzalloc(sizeof(struct create_lease_v2), GFP_KERNEL);
3673 memcpy(&buf->lcontext.LeaseKey, lease_key, SMB2_LEASE_KEY_SIZE);
3674 buf->lcontext.LeaseState = map_oplock_to_lease(oplock);
3676 buf->ccontext.DataOffset = cpu_to_le16(offsetof
3677 (struct create_lease_v2, lcontext));
3678 buf->ccontext.DataLength = cpu_to_le32(sizeof(struct lease_context_v2));
3679 buf->ccontext.NameOffset = cpu_to_le16(offsetof
3680 (struct create_lease_v2, Name));
3681 buf->ccontext.NameLength = cpu_to_le16(4);
3682 /* SMB2_CREATE_REQUEST_LEASE is "RqLs" */
3691 smb2_parse_lease_buf(void *buf, unsigned int *epoch, char *lease_key)
3693 struct create_lease *lc = (struct create_lease *)buf;
3695 *epoch = 0; /* not used */
3696 if (lc->lcontext.LeaseFlags & SMB2_LEASE_FLAG_BREAK_IN_PROGRESS)
3697 return SMB2_OPLOCK_LEVEL_NOCHANGE;
3698 return le32_to_cpu(lc->lcontext.LeaseState);
3702 smb3_parse_lease_buf(void *buf, unsigned int *epoch, char *lease_key)
3704 struct create_lease_v2 *lc = (struct create_lease_v2 *)buf;
3706 *epoch = le16_to_cpu(lc->lcontext.Epoch);
3707 if (lc->lcontext.LeaseFlags & SMB2_LEASE_FLAG_BREAK_IN_PROGRESS)
3708 return SMB2_OPLOCK_LEVEL_NOCHANGE;
3710 memcpy(lease_key, &lc->lcontext.LeaseKey, SMB2_LEASE_KEY_SIZE);
3711 return le32_to_cpu(lc->lcontext.LeaseState);
3715 smb2_wp_retry_size(struct inode *inode)
3717 return min_t(unsigned int, CIFS_SB(inode->i_sb)->wsize,
3718 SMB2_MAX_BUFFER_SIZE);
3722 smb2_dir_needs_close(struct cifsFileInfo *cfile)
3724 return !cfile->invalidHandle;
3728 fill_transform_hdr(struct smb2_transform_hdr *tr_hdr, unsigned int orig_len,
3729 struct smb_rqst *old_rq, __le16 cipher_type)
3731 struct smb2_sync_hdr *shdr =
3732 (struct smb2_sync_hdr *)old_rq->rq_iov[0].iov_base;
3734 memset(tr_hdr, 0, sizeof(struct smb2_transform_hdr));
3735 tr_hdr->ProtocolId = SMB2_TRANSFORM_PROTO_NUM;
3736 tr_hdr->OriginalMessageSize = cpu_to_le32(orig_len);
3737 tr_hdr->Flags = cpu_to_le16(0x01);
3738 if (cipher_type == SMB2_ENCRYPTION_AES128_GCM)
3739 get_random_bytes(&tr_hdr->Nonce, SMB3_AES128GCM_NONCE);
3741 get_random_bytes(&tr_hdr->Nonce, SMB3_AES128CCM_NONCE);
3742 memcpy(&tr_hdr->SessionId, &shdr->SessionId, 8);
3745 /* We can not use the normal sg_set_buf() as we will sometimes pass a
3746 * stack object as buf.
3748 static inline void smb2_sg_set_buf(struct scatterlist *sg, const void *buf,
3749 unsigned int buflen)
3753 * VMAP_STACK (at least) puts stack into the vmalloc address space
3755 if (is_vmalloc_addr(buf))
3756 addr = vmalloc_to_page(buf);
3758 addr = virt_to_page(buf);
3759 sg_set_page(sg, addr, buflen, offset_in_page(buf));
3762 /* Assumes the first rqst has a transform header as the first iov.
3764 * rqst[0].rq_iov[0] is transform header
3765 * rqst[0].rq_iov[1+] data to be encrypted/decrypted
3766 * rqst[1+].rq_iov[0+] data to be encrypted/decrypted
3768 static struct scatterlist *
3769 init_sg(int num_rqst, struct smb_rqst *rqst, u8 *sign)
3771 unsigned int sg_len;
3772 struct scatterlist *sg;
3775 unsigned int idx = 0;
3779 for (i = 0; i < num_rqst; i++)
3780 sg_len += rqst[i].rq_nvec + rqst[i].rq_npages;
3782 sg = kmalloc_array(sg_len, sizeof(struct scatterlist), GFP_KERNEL);
3786 sg_init_table(sg, sg_len);
3787 for (i = 0; i < num_rqst; i++) {
3788 for (j = 0; j < rqst[i].rq_nvec; j++) {
3790 * The first rqst has a transform header where the
3791 * first 20 bytes are not part of the encrypted blob
3793 skip = (i == 0) && (j == 0) ? 20 : 0;
3794 smb2_sg_set_buf(&sg[idx++],
3795 rqst[i].rq_iov[j].iov_base + skip,
3796 rqst[i].rq_iov[j].iov_len - skip);
3799 for (j = 0; j < rqst[i].rq_npages; j++) {
3800 unsigned int len, offset;
3802 rqst_page_get_length(&rqst[i], j, &len, &offset);
3803 sg_set_page(&sg[idx++], rqst[i].rq_pages[j], len, offset);
3806 smb2_sg_set_buf(&sg[idx], sign, SMB2_SIGNATURE_SIZE);
3811 smb2_get_enc_key(struct TCP_Server_Info *server, __u64 ses_id, int enc, u8 *key)
3813 struct cifs_ses *ses;
3816 spin_lock(&cifs_tcp_ses_lock);
3817 list_for_each_entry(server, &cifs_tcp_ses_list, tcp_ses_list) {
3818 list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) {
3819 if (ses->Suid == ses_id) {
3820 ses_enc_key = enc ? ses->smb3encryptionkey :
3821 ses->smb3decryptionkey;
3822 memcpy(key, ses_enc_key, SMB3_SIGN_KEY_SIZE);
3823 spin_unlock(&cifs_tcp_ses_lock);
3828 spin_unlock(&cifs_tcp_ses_lock);
3833 * Encrypt or decrypt @rqst message. @rqst[0] has the following format:
3834 * iov[0] - transform header (associate data),
3835 * iov[1-N] - SMB2 header and pages - data to encrypt.
3836 * On success return encrypted data in iov[1-N] and pages, leave iov[0]
3840 crypt_message(struct TCP_Server_Info *server, int num_rqst,
3841 struct smb_rqst *rqst, int enc)
3843 struct smb2_transform_hdr *tr_hdr =
3844 (struct smb2_transform_hdr *)rqst[0].rq_iov[0].iov_base;
3845 unsigned int assoc_data_len = sizeof(struct smb2_transform_hdr) - 20;
3847 struct scatterlist *sg;
3848 u8 sign[SMB2_SIGNATURE_SIZE] = {};
3849 u8 key[SMB3_SIGN_KEY_SIZE];
3850 struct aead_request *req;
3852 unsigned int iv_len;
3853 DECLARE_CRYPTO_WAIT(wait);
3854 struct crypto_aead *tfm;
3855 unsigned int crypt_len = le32_to_cpu(tr_hdr->OriginalMessageSize);
3857 rc = smb2_get_enc_key(server, tr_hdr->SessionId, enc, key);
3859 cifs_server_dbg(VFS, "%s: Could not get %scryption key\n", __func__,
3864 rc = smb3_crypto_aead_allocate(server);
3866 cifs_server_dbg(VFS, "%s: crypto alloc failed\n", __func__);
3870 tfm = enc ? server->secmech.ccmaesencrypt :
3871 server->secmech.ccmaesdecrypt;
3872 rc = crypto_aead_setkey(tfm, key, SMB3_SIGN_KEY_SIZE);
3874 cifs_server_dbg(VFS, "%s: Failed to set aead key %d\n", __func__, rc);
3878 rc = crypto_aead_setauthsize(tfm, SMB2_SIGNATURE_SIZE);
3880 cifs_server_dbg(VFS, "%s: Failed to set authsize %d\n", __func__, rc);
3884 req = aead_request_alloc(tfm, GFP_KERNEL);
3886 cifs_server_dbg(VFS, "%s: Failed to alloc aead request\n", __func__);
3891 memcpy(sign, &tr_hdr->Signature, SMB2_SIGNATURE_SIZE);
3892 crypt_len += SMB2_SIGNATURE_SIZE;
3895 sg = init_sg(num_rqst, rqst, sign);
3897 cifs_server_dbg(VFS, "%s: Failed to init sg\n", __func__);
3902 iv_len = crypto_aead_ivsize(tfm);
3903 iv = kzalloc(iv_len, GFP_KERNEL);
3905 cifs_server_dbg(VFS, "%s: Failed to alloc iv\n", __func__);
3910 if (server->cipher_type == SMB2_ENCRYPTION_AES128_GCM)
3911 memcpy(iv, (char *)tr_hdr->Nonce, SMB3_AES128GCM_NONCE);
3914 memcpy(iv + 1, (char *)tr_hdr->Nonce, SMB3_AES128CCM_NONCE);
3917 aead_request_set_crypt(req, sg, sg, crypt_len, iv);
3918 aead_request_set_ad(req, assoc_data_len);
3920 aead_request_set_callback(req, CRYPTO_TFM_REQ_MAY_BACKLOG,
3921 crypto_req_done, &wait);
3923 rc = crypto_wait_req(enc ? crypto_aead_encrypt(req)
3924 : crypto_aead_decrypt(req), &wait);
3927 memcpy(&tr_hdr->Signature, sign, SMB2_SIGNATURE_SIZE);
3938 smb3_free_compound_rqst(int num_rqst, struct smb_rqst *rqst)
3942 for (i = 0; i < num_rqst; i++) {
3943 if (rqst[i].rq_pages) {
3944 for (j = rqst[i].rq_npages - 1; j >= 0; j--)
3945 put_page(rqst[i].rq_pages[j]);
3946 kfree(rqst[i].rq_pages);
3952 * This function will initialize new_rq and encrypt the content.
3953 * The first entry, new_rq[0], only contains a single iov which contains
3954 * a smb2_transform_hdr and is pre-allocated by the caller.
3955 * This function then populates new_rq[1+] with the content from olq_rq[0+].
3957 * The end result is an array of smb_rqst structures where the first structure
3958 * only contains a single iov for the transform header which we then can pass
3959 * to crypt_message().
3961 * new_rq[0].rq_iov[0] : smb2_transform_hdr pre-allocated by the caller
3962 * new_rq[1+].rq_iov[*] == old_rq[0+].rq_iov[*] : SMB2/3 requests
3965 smb3_init_transform_rq(struct TCP_Server_Info *server, int num_rqst,
3966 struct smb_rqst *new_rq, struct smb_rqst *old_rq)
3968 struct page **pages;
3969 struct smb2_transform_hdr *tr_hdr = new_rq[0].rq_iov[0].iov_base;
3970 unsigned int npages;
3971 unsigned int orig_len = 0;
3975 for (i = 1; i < num_rqst; i++) {
3976 npages = old_rq[i - 1].rq_npages;
3977 pages = kmalloc_array(npages, sizeof(struct page *),
3982 new_rq[i].rq_pages = pages;
3983 new_rq[i].rq_npages = npages;
3984 new_rq[i].rq_offset = old_rq[i - 1].rq_offset;
3985 new_rq[i].rq_pagesz = old_rq[i - 1].rq_pagesz;
3986 new_rq[i].rq_tailsz = old_rq[i - 1].rq_tailsz;
3987 new_rq[i].rq_iov = old_rq[i - 1].rq_iov;
3988 new_rq[i].rq_nvec = old_rq[i - 1].rq_nvec;
3990 orig_len += smb_rqst_len(server, &old_rq[i - 1]);
3992 for (j = 0; j < npages; j++) {
3993 pages[j] = alloc_page(GFP_KERNEL|__GFP_HIGHMEM);
3998 /* copy pages form the old */
3999 for (j = 0; j < npages; j++) {
4001 unsigned int offset, len;
4003 rqst_page_get_length(&new_rq[i], j, &len, &offset);
4005 dst = (char *) kmap(new_rq[i].rq_pages[j]) + offset;
4006 src = (char *) kmap(old_rq[i - 1].rq_pages[j]) + offset;
4008 memcpy(dst, src, len);
4009 kunmap(new_rq[i].rq_pages[j]);
4010 kunmap(old_rq[i - 1].rq_pages[j]);
4014 /* fill the 1st iov with a transform header */
4015 fill_transform_hdr(tr_hdr, orig_len, old_rq, server->cipher_type);
4017 rc = crypt_message(server, num_rqst, new_rq, 1);
4018 cifs_dbg(FYI, "Encrypt message returned %d\n", rc);
4025 smb3_free_compound_rqst(num_rqst - 1, &new_rq[1]);
4030 smb3_is_transform_hdr(void *buf)
4032 struct smb2_transform_hdr *trhdr = buf;
4034 return trhdr->ProtocolId == SMB2_TRANSFORM_PROTO_NUM;
4038 decrypt_raw_data(struct TCP_Server_Info *server, char *buf,
4039 unsigned int buf_data_size, struct page **pages,
4040 unsigned int npages, unsigned int page_data_size)
4043 struct smb_rqst rqst = {NULL};
4046 iov[0].iov_base = buf;
4047 iov[0].iov_len = sizeof(struct smb2_transform_hdr);
4048 iov[1].iov_base = buf + sizeof(struct smb2_transform_hdr);
4049 iov[1].iov_len = buf_data_size;
4053 rqst.rq_pages = pages;
4054 rqst.rq_npages = npages;
4055 rqst.rq_pagesz = PAGE_SIZE;
4056 rqst.rq_tailsz = (page_data_size % PAGE_SIZE) ? : PAGE_SIZE;
4058 rc = crypt_message(server, 1, &rqst, 0);
4059 cifs_dbg(FYI, "Decrypt message returned %d\n", rc);
4064 memmove(buf, iov[1].iov_base, buf_data_size);
4066 server->total_read = buf_data_size + page_data_size;
4072 read_data_into_pages(struct TCP_Server_Info *server, struct page **pages,
4073 unsigned int npages, unsigned int len)
4078 for (i = 0; i < npages; i++) {
4079 struct page *page = pages[i];
4083 if (len >= PAGE_SIZE) {
4084 /* enough data to fill the page */
4088 zero_user(page, len, PAGE_SIZE - len);
4091 length = cifs_read_page_from_socket(server, page, 0, n);
4094 server->total_read += length;
4101 init_read_bvec(struct page **pages, unsigned int npages, unsigned int data_size,
4102 unsigned int cur_off, struct bio_vec **page_vec)
4104 struct bio_vec *bvec;
4107 bvec = kcalloc(npages, sizeof(struct bio_vec), GFP_KERNEL);
4111 for (i = 0; i < npages; i++) {
4112 bvec[i].bv_page = pages[i];
4113 bvec[i].bv_offset = (i == 0) ? cur_off : 0;
4114 bvec[i].bv_len = min_t(unsigned int, PAGE_SIZE, data_size);
4115 data_size -= bvec[i].bv_len;
4118 if (data_size != 0) {
4119 cifs_dbg(VFS, "%s: something went wrong\n", __func__);
4129 handle_read_data(struct TCP_Server_Info *server, struct mid_q_entry *mid,
4130 char *buf, unsigned int buf_len, struct page **pages,
4131 unsigned int npages, unsigned int page_data_size)
4133 unsigned int data_offset;
4134 unsigned int data_len;
4135 unsigned int cur_off;
4136 unsigned int cur_page_idx;
4137 unsigned int pad_len;
4138 struct cifs_readdata *rdata = mid->callback_data;
4139 struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)buf;
4140 struct bio_vec *bvec = NULL;
4141 struct iov_iter iter;
4144 bool use_rdma_mr = false;
4146 if (shdr->Command != SMB2_READ) {
4147 cifs_server_dbg(VFS, "only big read responses are supported\n");
4151 if (server->ops->is_session_expired &&
4152 server->ops->is_session_expired(buf)) {
4153 cifs_reconnect(server);
4157 if (server->ops->is_status_pending &&
4158 server->ops->is_status_pending(buf, server))
4161 /* set up first two iov to get credits */
4162 rdata->iov[0].iov_base = buf;
4163 rdata->iov[0].iov_len = 0;
4164 rdata->iov[1].iov_base = buf;
4165 rdata->iov[1].iov_len =
4166 min_t(unsigned int, buf_len, server->vals->read_rsp_size);
4167 cifs_dbg(FYI, "0: iov_base=%p iov_len=%zu\n",
4168 rdata->iov[0].iov_base, rdata->iov[0].iov_len);
4169 cifs_dbg(FYI, "1: iov_base=%p iov_len=%zu\n",
4170 rdata->iov[1].iov_base, rdata->iov[1].iov_len);
4172 rdata->result = server->ops->map_error(buf, true);
4173 if (rdata->result != 0) {
4174 cifs_dbg(FYI, "%s: server returned error %d\n",
4175 __func__, rdata->result);
4176 /* normal error on read response */
4177 dequeue_mid(mid, false);
4181 data_offset = server->ops->read_data_offset(buf);
4182 #ifdef CONFIG_CIFS_SMB_DIRECT
4183 use_rdma_mr = rdata->mr;
4185 data_len = server->ops->read_data_length(buf, use_rdma_mr);
4187 if (data_offset < server->vals->read_rsp_size) {
4189 * win2k8 sometimes sends an offset of 0 when the read
4190 * is beyond the EOF. Treat it as if the data starts just after
4193 cifs_dbg(FYI, "%s: data offset (%u) inside read response header\n",
4194 __func__, data_offset);
4195 data_offset = server->vals->read_rsp_size;
4196 } else if (data_offset > MAX_CIFS_SMALL_BUFFER_SIZE) {
4197 /* data_offset is beyond the end of smallbuf */
4198 cifs_dbg(FYI, "%s: data offset (%u) beyond end of smallbuf\n",
4199 __func__, data_offset);
4200 rdata->result = -EIO;
4201 dequeue_mid(mid, rdata->result);
4205 pad_len = data_offset - server->vals->read_rsp_size;
4207 if (buf_len <= data_offset) {
4208 /* read response payload is in pages */
4209 cur_page_idx = pad_len / PAGE_SIZE;
4210 cur_off = pad_len % PAGE_SIZE;
4212 if (cur_page_idx != 0) {
4213 /* data offset is beyond the 1st page of response */
4214 cifs_dbg(FYI, "%s: data offset (%u) beyond 1st page of response\n",
4215 __func__, data_offset);
4216 rdata->result = -EIO;
4217 dequeue_mid(mid, rdata->result);
4221 if (data_len > page_data_size - pad_len) {
4222 /* data_len is corrupt -- discard frame */
4223 rdata->result = -EIO;
4224 dequeue_mid(mid, rdata->result);
4228 rdata->result = init_read_bvec(pages, npages, page_data_size,
4230 if (rdata->result != 0) {
4231 dequeue_mid(mid, rdata->result);
4235 iov_iter_bvec(&iter, WRITE, bvec, npages, data_len);
4236 } else if (buf_len >= data_offset + data_len) {
4237 /* read response payload is in buf */
4238 WARN_ONCE(npages > 0, "read data can be either in buf or in pages");
4239 iov.iov_base = buf + data_offset;
4240 iov.iov_len = data_len;
4241 iov_iter_kvec(&iter, WRITE, &iov, 1, data_len);
4243 /* read response payload cannot be in both buf and pages */
4244 WARN_ONCE(1, "buf can not contain only a part of read data");
4245 rdata->result = -EIO;
4246 dequeue_mid(mid, rdata->result);
4250 length = rdata->copy_into_pages(server, rdata, &iter);
4257 dequeue_mid(mid, false);
4261 struct smb2_decrypt_work {
4262 struct work_struct decrypt;
4263 struct TCP_Server_Info *server;
4264 struct page **ppages;
4266 unsigned int npages;
4271 static void smb2_decrypt_offload(struct work_struct *work)
4273 struct smb2_decrypt_work *dw = container_of(work,
4274 struct smb2_decrypt_work, decrypt);
4276 struct mid_q_entry *mid;
4278 rc = decrypt_raw_data(dw->server, dw->buf, dw->server->vals->read_rsp_size,
4279 dw->ppages, dw->npages, dw->len);
4281 cifs_dbg(VFS, "error decrypting rc=%d\n", rc);
4285 dw->server->lstrp = jiffies;
4286 mid = smb2_find_mid(dw->server, dw->buf);
4288 cifs_dbg(FYI, "mid not found\n");
4290 mid->decrypted = true;
4291 rc = handle_read_data(dw->server, mid, dw->buf,
4292 dw->server->vals->read_rsp_size,
4293 dw->ppages, dw->npages, dw->len);
4295 cifs_mid_q_entry_release(mid);
4299 for (i = dw->npages-1; i >= 0; i--)
4300 put_page(dw->ppages[i]);
4303 cifs_small_buf_release(dw->buf);
4309 receive_encrypted_read(struct TCP_Server_Info *server, struct mid_q_entry **mid,
4312 char *buf = server->smallbuf;
4313 struct smb2_transform_hdr *tr_hdr = (struct smb2_transform_hdr *)buf;
4314 unsigned int npages;
4315 struct page **pages;
4317 unsigned int buflen = server->pdu_size;
4320 struct smb2_decrypt_work *dw;
4323 len = min_t(unsigned int, buflen, server->vals->read_rsp_size +
4324 sizeof(struct smb2_transform_hdr)) - HEADER_SIZE(server) + 1;
4326 rc = cifs_read_from_socket(server, buf + HEADER_SIZE(server) - 1, len);
4329 server->total_read += rc;
4331 len = le32_to_cpu(tr_hdr->OriginalMessageSize) -
4332 server->vals->read_rsp_size;
4333 npages = DIV_ROUND_UP(len, PAGE_SIZE);
4335 pages = kmalloc_array(npages, sizeof(struct page *), GFP_KERNEL);
4341 for (; i < npages; i++) {
4342 pages[i] = alloc_page(GFP_KERNEL|__GFP_HIGHMEM);
4349 /* read read data into pages */
4350 rc = read_data_into_pages(server, pages, npages, len);
4354 rc = cifs_discard_remaining_data(server);
4359 * For large reads, offload to different thread for better performance,
4360 * use more cores decrypting which can be expensive
4363 if ((server->min_offload) && (server->in_flight > 1) &&
4364 (server->pdu_size >= server->min_offload)) {
4365 dw = kmalloc(sizeof(struct smb2_decrypt_work), GFP_KERNEL);
4367 goto non_offloaded_decrypt;
4369 dw->buf = server->smallbuf;
4370 server->smallbuf = (char *)cifs_small_buf_get();
4372 INIT_WORK(&dw->decrypt, smb2_decrypt_offload);
4374 dw->npages = npages;
4375 dw->server = server;
4378 queue_work(decrypt_wq, &dw->decrypt);
4379 *num_mids = 0; /* worker thread takes care of finding mid */
4383 non_offloaded_decrypt:
4384 rc = decrypt_raw_data(server, buf, server->vals->read_rsp_size,
4385 pages, npages, len);
4389 *mid = smb2_find_mid(server, buf);
4391 cifs_dbg(FYI, "mid not found\n");
4393 cifs_dbg(FYI, "mid found\n");
4394 (*mid)->decrypted = true;
4395 rc = handle_read_data(server, *mid, buf,
4396 server->vals->read_rsp_size,
4397 pages, npages, len);
4401 for (i = i - 1; i >= 0; i--)
4406 cifs_discard_remaining_data(server);
4411 receive_encrypted_standard(struct TCP_Server_Info *server,
4412 struct mid_q_entry **mids, char **bufs,
4416 char *buf = server->smallbuf;
4417 struct smb2_sync_hdr *shdr;
4418 unsigned int pdu_length = server->pdu_size;
4419 unsigned int buf_size;
4420 struct mid_q_entry *mid_entry;
4422 char *next_buffer = NULL;
4426 /* switch to large buffer if too big for a small one */
4427 if (pdu_length > MAX_CIFS_SMALL_BUFFER_SIZE) {
4428 server->large_buf = true;
4429 memcpy(server->bigbuf, buf, server->total_read);
4430 buf = server->bigbuf;
4433 /* now read the rest */
4434 length = cifs_read_from_socket(server, buf + HEADER_SIZE(server) - 1,
4435 pdu_length - HEADER_SIZE(server) + 1);
4438 server->total_read += length;
4440 buf_size = pdu_length - sizeof(struct smb2_transform_hdr);
4441 length = decrypt_raw_data(server, buf, buf_size, NULL, 0, 0);
4445 next_is_large = server->large_buf;
4447 shdr = (struct smb2_sync_hdr *)buf;
4448 if (shdr->NextCommand) {
4450 next_buffer = (char *)cifs_buf_get();
4452 next_buffer = (char *)cifs_small_buf_get();
4454 buf + le32_to_cpu(shdr->NextCommand),
4455 pdu_length - le32_to_cpu(shdr->NextCommand));
4458 mid_entry = smb2_find_mid(server, buf);
4459 if (mid_entry == NULL)
4460 cifs_dbg(FYI, "mid not found\n");
4462 cifs_dbg(FYI, "mid found\n");
4463 mid_entry->decrypted = true;
4464 mid_entry->resp_buf_size = server->pdu_size;
4467 if (*num_mids >= MAX_COMPOUND) {
4468 cifs_server_dbg(VFS, "too many PDUs in compound\n");
4471 bufs[*num_mids] = buf;
4472 mids[(*num_mids)++] = mid_entry;
4474 if (mid_entry && mid_entry->handle)
4475 ret = mid_entry->handle(server, mid_entry);
4477 ret = cifs_handle_standard(server, mid_entry);
4479 if (ret == 0 && shdr->NextCommand) {
4480 pdu_length -= le32_to_cpu(shdr->NextCommand);
4481 server->large_buf = next_is_large;
4483 server->bigbuf = buf = next_buffer;
4485 server->smallbuf = buf = next_buffer;
4487 } else if (ret != 0) {
4489 * ret != 0 here means that we didn't get to handle_mid() thus
4490 * server->smallbuf and server->bigbuf are still valid. We need
4491 * to free next_buffer because it is not going to be used
4495 free_rsp_buf(CIFS_LARGE_BUFFER, next_buffer);
4497 free_rsp_buf(CIFS_SMALL_BUFFER, next_buffer);
4504 smb3_receive_transform(struct TCP_Server_Info *server,
4505 struct mid_q_entry **mids, char **bufs, int *num_mids)
4507 char *buf = server->smallbuf;
4508 unsigned int pdu_length = server->pdu_size;
4509 struct smb2_transform_hdr *tr_hdr = (struct smb2_transform_hdr *)buf;
4510 unsigned int orig_len = le32_to_cpu(tr_hdr->OriginalMessageSize);
4512 if (pdu_length < sizeof(struct smb2_transform_hdr) +
4513 sizeof(struct smb2_sync_hdr)) {
4514 cifs_server_dbg(VFS, "Transform message is too small (%u)\n",
4516 cifs_reconnect(server);
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 return -ECONNABORTED;
4526 /* TODO: add support for compounds containing READ. */
4527 if (pdu_length > CIFSMaxBufSize + MAX_HEADER_SIZE(server)) {
4528 return receive_encrypted_read(server, &mids[0], num_mids);
4531 return receive_encrypted_standard(server, mids, bufs, num_mids);
4535 smb3_handle_read_data(struct TCP_Server_Info *server, struct mid_q_entry *mid)
4537 char *buf = server->large_buf ? server->bigbuf : server->smallbuf;
4539 return handle_read_data(server, mid, buf, server->pdu_size,
4544 smb2_next_header(char *buf)
4546 struct smb2_sync_hdr *hdr = (struct smb2_sync_hdr *)buf;
4547 struct smb2_transform_hdr *t_hdr = (struct smb2_transform_hdr *)buf;
4549 if (hdr->ProtocolId == SMB2_TRANSFORM_PROTO_NUM)
4550 return sizeof(struct smb2_transform_hdr) +
4551 le32_to_cpu(t_hdr->OriginalMessageSize);
4553 return le32_to_cpu(hdr->NextCommand);
4557 smb2_make_node(unsigned int xid, struct inode *inode,
4558 struct dentry *dentry, struct cifs_tcon *tcon,
4559 char *full_path, umode_t mode, dev_t dev)
4561 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
4563 FILE_ALL_INFO *buf = NULL;
4564 struct cifs_io_parms io_parms;
4566 struct cifs_fid fid;
4567 struct cifs_open_parms oparms;
4568 unsigned int bytes_written;
4569 struct win_dev *pdev;
4573 * Check if mounted with mount parm 'sfu' mount parm.
4574 * SFU emulation should work with all servers, but only
4575 * supports block and char device (no socket & fifo),
4576 * and was used by default in earlier versions of Windows
4578 if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL))
4582 * TODO: Add ability to create instead via reparse point. Windows (e.g.
4583 * their current NFS server) uses this approach to expose special files
4584 * over SMB2/SMB3 and Samba will do this with SMB3.1.1 POSIX Extensions
4587 if (!S_ISCHR(mode) && !S_ISBLK(mode))
4590 cifs_dbg(FYI, "sfu compat create special file\n");
4592 buf = kmalloc(sizeof(FILE_ALL_INFO), GFP_KERNEL);
4599 oparms.cifs_sb = cifs_sb;
4600 oparms.desired_access = GENERIC_WRITE;
4601 oparms.create_options = cifs_create_options(cifs_sb, CREATE_NOT_DIR |
4602 CREATE_OPTION_SPECIAL);
4603 oparms.disposition = FILE_CREATE;
4604 oparms.path = full_path;
4606 oparms.reconnect = false;
4608 if (tcon->ses->server->oplocks)
4609 oplock = REQ_OPLOCK;
4612 rc = tcon->ses->server->ops->open(xid, &oparms, &oplock, buf);
4617 * BB Do not bother to decode buf since no local inode yet to put
4618 * timestamps in, but we can reuse it safely.
4621 pdev = (struct win_dev *)buf;
4622 io_parms.pid = current->tgid;
4623 io_parms.tcon = tcon;
4624 io_parms.offset = 0;
4625 io_parms.length = sizeof(struct win_dev);
4626 iov[1].iov_base = buf;
4627 iov[1].iov_len = sizeof(struct win_dev);
4628 if (S_ISCHR(mode)) {
4629 memcpy(pdev->type, "IntxCHR", 8);
4630 pdev->major = cpu_to_le64(MAJOR(dev));
4631 pdev->minor = cpu_to_le64(MINOR(dev));
4632 rc = tcon->ses->server->ops->sync_write(xid, &fid, &io_parms,
4633 &bytes_written, iov, 1);
4634 } else if (S_ISBLK(mode)) {
4635 memcpy(pdev->type, "IntxBLK", 8);
4636 pdev->major = cpu_to_le64(MAJOR(dev));
4637 pdev->minor = cpu_to_le64(MINOR(dev));
4638 rc = tcon->ses->server->ops->sync_write(xid, &fid, &io_parms,
4639 &bytes_written, iov, 1);
4641 tcon->ses->server->ops->close(xid, tcon, &fid);
4644 /* FIXME: add code here to set EAs */
4651 struct smb_version_operations smb20_operations = {
4652 .compare_fids = smb2_compare_fids,
4653 .setup_request = smb2_setup_request,
4654 .setup_async_request = smb2_setup_async_request,
4655 .check_receive = smb2_check_receive,
4656 .add_credits = smb2_add_credits,
4657 .set_credits = smb2_set_credits,
4658 .get_credits_field = smb2_get_credits_field,
4659 .get_credits = smb2_get_credits,
4660 .wait_mtu_credits = cifs_wait_mtu_credits,
4661 .get_next_mid = smb2_get_next_mid,
4662 .revert_current_mid = smb2_revert_current_mid,
4663 .read_data_offset = smb2_read_data_offset,
4664 .read_data_length = smb2_read_data_length,
4665 .map_error = map_smb2_to_linux_error,
4666 .find_mid = smb2_find_mid,
4667 .check_message = smb2_check_message,
4668 .dump_detail = smb2_dump_detail,
4669 .clear_stats = smb2_clear_stats,
4670 .print_stats = smb2_print_stats,
4671 .is_oplock_break = smb2_is_valid_oplock_break,
4672 .handle_cancelled_mid = smb2_handle_cancelled_mid,
4673 .downgrade_oplock = smb2_downgrade_oplock,
4674 .need_neg = smb2_need_neg,
4675 .negotiate = smb2_negotiate,
4676 .negotiate_wsize = smb2_negotiate_wsize,
4677 .negotiate_rsize = smb2_negotiate_rsize,
4678 .sess_setup = SMB2_sess_setup,
4679 .logoff = SMB2_logoff,
4680 .tree_connect = SMB2_tcon,
4681 .tree_disconnect = SMB2_tdis,
4682 .qfs_tcon = smb2_qfs_tcon,
4683 .is_path_accessible = smb2_is_path_accessible,
4684 .can_echo = smb2_can_echo,
4686 .query_path_info = smb2_query_path_info,
4687 .get_srv_inum = smb2_get_srv_inum,
4688 .query_file_info = smb2_query_file_info,
4689 .set_path_size = smb2_set_path_size,
4690 .set_file_size = smb2_set_file_size,
4691 .set_file_info = smb2_set_file_info,
4692 .set_compression = smb2_set_compression,
4693 .mkdir = smb2_mkdir,
4694 .mkdir_setinfo = smb2_mkdir_setinfo,
4695 .rmdir = smb2_rmdir,
4696 .unlink = smb2_unlink,
4697 .rename = smb2_rename_path,
4698 .create_hardlink = smb2_create_hardlink,
4699 .query_symlink = smb2_query_symlink,
4700 .query_mf_symlink = smb3_query_mf_symlink,
4701 .create_mf_symlink = smb3_create_mf_symlink,
4702 .open = smb2_open_file,
4703 .set_fid = smb2_set_fid,
4704 .close = smb2_close_file,
4705 .flush = smb2_flush_file,
4706 .async_readv = smb2_async_readv,
4707 .async_writev = smb2_async_writev,
4708 .sync_read = smb2_sync_read,
4709 .sync_write = smb2_sync_write,
4710 .query_dir_first = smb2_query_dir_first,
4711 .query_dir_next = smb2_query_dir_next,
4712 .close_dir = smb2_close_dir,
4713 .calc_smb_size = smb2_calc_size,
4714 .is_status_pending = smb2_is_status_pending,
4715 .is_session_expired = smb2_is_session_expired,
4716 .oplock_response = smb2_oplock_response,
4717 .queryfs = smb2_queryfs,
4718 .mand_lock = smb2_mand_lock,
4719 .mand_unlock_range = smb2_unlock_range,
4720 .push_mand_locks = smb2_push_mandatory_locks,
4721 .get_lease_key = smb2_get_lease_key,
4722 .set_lease_key = smb2_set_lease_key,
4723 .new_lease_key = smb2_new_lease_key,
4724 .calc_signature = smb2_calc_signature,
4725 .is_read_op = smb2_is_read_op,
4726 .set_oplock_level = smb2_set_oplock_level,
4727 .create_lease_buf = smb2_create_lease_buf,
4728 .parse_lease_buf = smb2_parse_lease_buf,
4729 .copychunk_range = smb2_copychunk_range,
4730 .wp_retry_size = smb2_wp_retry_size,
4731 .dir_needs_close = smb2_dir_needs_close,
4732 .get_dfs_refer = smb2_get_dfs_refer,
4733 .select_sectype = smb2_select_sectype,
4734 #ifdef CONFIG_CIFS_XATTR
4735 .query_all_EAs = smb2_query_eas,
4736 .set_EA = smb2_set_ea,
4737 #endif /* CIFS_XATTR */
4738 .get_acl = get_smb2_acl,
4739 .get_acl_by_fid = get_smb2_acl_by_fid,
4740 .set_acl = set_smb2_acl,
4741 .next_header = smb2_next_header,
4742 .ioctl_query_info = smb2_ioctl_query_info,
4743 .make_node = smb2_make_node,
4744 .fiemap = smb3_fiemap,
4745 .llseek = smb3_llseek,
4748 struct smb_version_operations smb21_operations = {
4749 .compare_fids = smb2_compare_fids,
4750 .setup_request = smb2_setup_request,
4751 .setup_async_request = smb2_setup_async_request,
4752 .check_receive = smb2_check_receive,
4753 .add_credits = smb2_add_credits,
4754 .set_credits = smb2_set_credits,
4755 .get_credits_field = smb2_get_credits_field,
4756 .get_credits = smb2_get_credits,
4757 .wait_mtu_credits = smb2_wait_mtu_credits,
4758 .adjust_credits = smb2_adjust_credits,
4759 .get_next_mid = smb2_get_next_mid,
4760 .revert_current_mid = smb2_revert_current_mid,
4761 .read_data_offset = smb2_read_data_offset,
4762 .read_data_length = smb2_read_data_length,
4763 .map_error = map_smb2_to_linux_error,
4764 .find_mid = smb2_find_mid,
4765 .check_message = smb2_check_message,
4766 .dump_detail = smb2_dump_detail,
4767 .clear_stats = smb2_clear_stats,
4768 .print_stats = smb2_print_stats,
4769 .is_oplock_break = smb2_is_valid_oplock_break,
4770 .handle_cancelled_mid = smb2_handle_cancelled_mid,
4771 .downgrade_oplock = smb2_downgrade_oplock,
4772 .need_neg = smb2_need_neg,
4773 .negotiate = smb2_negotiate,
4774 .negotiate_wsize = smb2_negotiate_wsize,
4775 .negotiate_rsize = smb2_negotiate_rsize,
4776 .sess_setup = SMB2_sess_setup,
4777 .logoff = SMB2_logoff,
4778 .tree_connect = SMB2_tcon,
4779 .tree_disconnect = SMB2_tdis,
4780 .qfs_tcon = smb2_qfs_tcon,
4781 .is_path_accessible = smb2_is_path_accessible,
4782 .can_echo = smb2_can_echo,
4784 .query_path_info = smb2_query_path_info,
4785 .get_srv_inum = smb2_get_srv_inum,
4786 .query_file_info = smb2_query_file_info,
4787 .set_path_size = smb2_set_path_size,
4788 .set_file_size = smb2_set_file_size,
4789 .set_file_info = smb2_set_file_info,
4790 .set_compression = smb2_set_compression,
4791 .mkdir = smb2_mkdir,
4792 .mkdir_setinfo = smb2_mkdir_setinfo,
4793 .rmdir = smb2_rmdir,
4794 .unlink = smb2_unlink,
4795 .rename = smb2_rename_path,
4796 .create_hardlink = smb2_create_hardlink,
4797 .query_symlink = smb2_query_symlink,
4798 .query_mf_symlink = smb3_query_mf_symlink,
4799 .create_mf_symlink = smb3_create_mf_symlink,
4800 .open = smb2_open_file,
4801 .set_fid = smb2_set_fid,
4802 .close = smb2_close_file,
4803 .flush = smb2_flush_file,
4804 .async_readv = smb2_async_readv,
4805 .async_writev = smb2_async_writev,
4806 .sync_read = smb2_sync_read,
4807 .sync_write = smb2_sync_write,
4808 .query_dir_first = smb2_query_dir_first,
4809 .query_dir_next = smb2_query_dir_next,
4810 .close_dir = smb2_close_dir,
4811 .calc_smb_size = smb2_calc_size,
4812 .is_status_pending = smb2_is_status_pending,
4813 .is_session_expired = smb2_is_session_expired,
4814 .oplock_response = smb2_oplock_response,
4815 .queryfs = smb2_queryfs,
4816 .mand_lock = smb2_mand_lock,
4817 .mand_unlock_range = smb2_unlock_range,
4818 .push_mand_locks = smb2_push_mandatory_locks,
4819 .get_lease_key = smb2_get_lease_key,
4820 .set_lease_key = smb2_set_lease_key,
4821 .new_lease_key = smb2_new_lease_key,
4822 .calc_signature = smb2_calc_signature,
4823 .is_read_op = smb21_is_read_op,
4824 .set_oplock_level = smb21_set_oplock_level,
4825 .create_lease_buf = smb2_create_lease_buf,
4826 .parse_lease_buf = smb2_parse_lease_buf,
4827 .copychunk_range = smb2_copychunk_range,
4828 .wp_retry_size = smb2_wp_retry_size,
4829 .dir_needs_close = smb2_dir_needs_close,
4830 .enum_snapshots = smb3_enum_snapshots,
4831 .notify = smb3_notify,
4832 .get_dfs_refer = smb2_get_dfs_refer,
4833 .select_sectype = smb2_select_sectype,
4834 #ifdef CONFIG_CIFS_XATTR
4835 .query_all_EAs = smb2_query_eas,
4836 .set_EA = smb2_set_ea,
4837 #endif /* CIFS_XATTR */
4838 .get_acl = get_smb2_acl,
4839 .get_acl_by_fid = get_smb2_acl_by_fid,
4840 .set_acl = set_smb2_acl,
4841 .next_header = smb2_next_header,
4842 .ioctl_query_info = smb2_ioctl_query_info,
4843 .make_node = smb2_make_node,
4844 .fiemap = smb3_fiemap,
4845 .llseek = smb3_llseek,
4848 struct smb_version_operations smb30_operations = {
4849 .compare_fids = smb2_compare_fids,
4850 .setup_request = smb2_setup_request,
4851 .setup_async_request = smb2_setup_async_request,
4852 .check_receive = smb2_check_receive,
4853 .add_credits = smb2_add_credits,
4854 .set_credits = smb2_set_credits,
4855 .get_credits_field = smb2_get_credits_field,
4856 .get_credits = smb2_get_credits,
4857 .wait_mtu_credits = smb2_wait_mtu_credits,
4858 .adjust_credits = smb2_adjust_credits,
4859 .get_next_mid = smb2_get_next_mid,
4860 .revert_current_mid = smb2_revert_current_mid,
4861 .read_data_offset = smb2_read_data_offset,
4862 .read_data_length = smb2_read_data_length,
4863 .map_error = map_smb2_to_linux_error,
4864 .find_mid = smb2_find_mid,
4865 .check_message = smb2_check_message,
4866 .dump_detail = smb2_dump_detail,
4867 .clear_stats = smb2_clear_stats,
4868 .print_stats = smb2_print_stats,
4869 .dump_share_caps = smb2_dump_share_caps,
4870 .is_oplock_break = smb2_is_valid_oplock_break,
4871 .handle_cancelled_mid = smb2_handle_cancelled_mid,
4872 .downgrade_oplock = smb3_downgrade_oplock,
4873 .need_neg = smb2_need_neg,
4874 .negotiate = smb2_negotiate,
4875 .negotiate_wsize = smb3_negotiate_wsize,
4876 .negotiate_rsize = smb3_negotiate_rsize,
4877 .sess_setup = SMB2_sess_setup,
4878 .logoff = SMB2_logoff,
4879 .tree_connect = SMB2_tcon,
4880 .tree_disconnect = SMB2_tdis,
4881 .qfs_tcon = smb3_qfs_tcon,
4882 .is_path_accessible = smb2_is_path_accessible,
4883 .can_echo = smb2_can_echo,
4885 .query_path_info = smb2_query_path_info,
4886 .get_srv_inum = smb2_get_srv_inum,
4887 .query_file_info = smb2_query_file_info,
4888 .set_path_size = smb2_set_path_size,
4889 .set_file_size = smb2_set_file_size,
4890 .set_file_info = smb2_set_file_info,
4891 .set_compression = smb2_set_compression,
4892 .mkdir = smb2_mkdir,
4893 .mkdir_setinfo = smb2_mkdir_setinfo,
4894 .rmdir = smb2_rmdir,
4895 .unlink = smb2_unlink,
4896 .rename = smb2_rename_path,
4897 .create_hardlink = smb2_create_hardlink,
4898 .query_symlink = smb2_query_symlink,
4899 .query_mf_symlink = smb3_query_mf_symlink,
4900 .create_mf_symlink = smb3_create_mf_symlink,
4901 .open = smb2_open_file,
4902 .set_fid = smb2_set_fid,
4903 .close = smb2_close_file,
4904 .close_getattr = smb2_close_getattr,
4905 .flush = smb2_flush_file,
4906 .async_readv = smb2_async_readv,
4907 .async_writev = smb2_async_writev,
4908 .sync_read = smb2_sync_read,
4909 .sync_write = smb2_sync_write,
4910 .query_dir_first = smb2_query_dir_first,
4911 .query_dir_next = smb2_query_dir_next,
4912 .close_dir = smb2_close_dir,
4913 .calc_smb_size = smb2_calc_size,
4914 .is_status_pending = smb2_is_status_pending,
4915 .is_session_expired = smb2_is_session_expired,
4916 .oplock_response = smb2_oplock_response,
4917 .queryfs = smb2_queryfs,
4918 .mand_lock = smb2_mand_lock,
4919 .mand_unlock_range = smb2_unlock_range,
4920 .push_mand_locks = smb2_push_mandatory_locks,
4921 .get_lease_key = smb2_get_lease_key,
4922 .set_lease_key = smb2_set_lease_key,
4923 .new_lease_key = smb2_new_lease_key,
4924 .generate_signingkey = generate_smb30signingkey,
4925 .calc_signature = smb3_calc_signature,
4926 .set_integrity = smb3_set_integrity,
4927 .is_read_op = smb21_is_read_op,
4928 .set_oplock_level = smb3_set_oplock_level,
4929 .create_lease_buf = smb3_create_lease_buf,
4930 .parse_lease_buf = smb3_parse_lease_buf,
4931 .copychunk_range = smb2_copychunk_range,
4932 .duplicate_extents = smb2_duplicate_extents,
4933 .validate_negotiate = smb3_validate_negotiate,
4934 .wp_retry_size = smb2_wp_retry_size,
4935 .dir_needs_close = smb2_dir_needs_close,
4936 .fallocate = smb3_fallocate,
4937 .enum_snapshots = smb3_enum_snapshots,
4938 .notify = smb3_notify,
4939 .init_transform_rq = smb3_init_transform_rq,
4940 .is_transform_hdr = smb3_is_transform_hdr,
4941 .receive_transform = smb3_receive_transform,
4942 .get_dfs_refer = smb2_get_dfs_refer,
4943 .select_sectype = smb2_select_sectype,
4944 #ifdef CONFIG_CIFS_XATTR
4945 .query_all_EAs = smb2_query_eas,
4946 .set_EA = smb2_set_ea,
4947 #endif /* CIFS_XATTR */
4948 .get_acl = get_smb2_acl,
4949 .get_acl_by_fid = get_smb2_acl_by_fid,
4950 .set_acl = set_smb2_acl,
4951 .next_header = smb2_next_header,
4952 .ioctl_query_info = smb2_ioctl_query_info,
4953 .make_node = smb2_make_node,
4954 .fiemap = smb3_fiemap,
4955 .llseek = smb3_llseek,
4958 struct smb_version_operations smb311_operations = {
4959 .compare_fids = smb2_compare_fids,
4960 .setup_request = smb2_setup_request,
4961 .setup_async_request = smb2_setup_async_request,
4962 .check_receive = smb2_check_receive,
4963 .add_credits = smb2_add_credits,
4964 .set_credits = smb2_set_credits,
4965 .get_credits_field = smb2_get_credits_field,
4966 .get_credits = smb2_get_credits,
4967 .wait_mtu_credits = smb2_wait_mtu_credits,
4968 .adjust_credits = smb2_adjust_credits,
4969 .get_next_mid = smb2_get_next_mid,
4970 .revert_current_mid = smb2_revert_current_mid,
4971 .read_data_offset = smb2_read_data_offset,
4972 .read_data_length = smb2_read_data_length,
4973 .map_error = map_smb2_to_linux_error,
4974 .find_mid = smb2_find_mid,
4975 .check_message = smb2_check_message,
4976 .dump_detail = smb2_dump_detail,
4977 .clear_stats = smb2_clear_stats,
4978 .print_stats = smb2_print_stats,
4979 .dump_share_caps = smb2_dump_share_caps,
4980 .is_oplock_break = smb2_is_valid_oplock_break,
4981 .handle_cancelled_mid = smb2_handle_cancelled_mid,
4982 .downgrade_oplock = smb3_downgrade_oplock,
4983 .need_neg = smb2_need_neg,
4984 .negotiate = smb2_negotiate,
4985 .negotiate_wsize = smb3_negotiate_wsize,
4986 .negotiate_rsize = smb3_negotiate_rsize,
4987 .sess_setup = SMB2_sess_setup,
4988 .logoff = SMB2_logoff,
4989 .tree_connect = SMB2_tcon,
4990 .tree_disconnect = SMB2_tdis,
4991 .qfs_tcon = smb3_qfs_tcon,
4992 .is_path_accessible = smb2_is_path_accessible,
4993 .can_echo = smb2_can_echo,
4995 .query_path_info = smb2_query_path_info,
4996 .get_srv_inum = smb2_get_srv_inum,
4997 .query_file_info = smb2_query_file_info,
4998 .set_path_size = smb2_set_path_size,
4999 .set_file_size = smb2_set_file_size,
5000 .set_file_info = smb2_set_file_info,
5001 .set_compression = smb2_set_compression,
5002 .mkdir = smb2_mkdir,
5003 .mkdir_setinfo = smb2_mkdir_setinfo,
5004 .posix_mkdir = smb311_posix_mkdir,
5005 .rmdir = smb2_rmdir,
5006 .unlink = smb2_unlink,
5007 .rename = smb2_rename_path,
5008 .create_hardlink = smb2_create_hardlink,
5009 .query_symlink = smb2_query_symlink,
5010 .query_mf_symlink = smb3_query_mf_symlink,
5011 .create_mf_symlink = smb3_create_mf_symlink,
5012 .open = smb2_open_file,
5013 .set_fid = smb2_set_fid,
5014 .close = smb2_close_file,
5015 .close_getattr = smb2_close_getattr,
5016 .flush = smb2_flush_file,
5017 .async_readv = smb2_async_readv,
5018 .async_writev = smb2_async_writev,
5019 .sync_read = smb2_sync_read,
5020 .sync_write = smb2_sync_write,
5021 .query_dir_first = smb2_query_dir_first,
5022 .query_dir_next = smb2_query_dir_next,
5023 .close_dir = smb2_close_dir,
5024 .calc_smb_size = smb2_calc_size,
5025 .is_status_pending = smb2_is_status_pending,
5026 .is_session_expired = smb2_is_session_expired,
5027 .oplock_response = smb2_oplock_response,
5028 .queryfs = smb311_queryfs,
5029 .mand_lock = smb2_mand_lock,
5030 .mand_unlock_range = smb2_unlock_range,
5031 .push_mand_locks = smb2_push_mandatory_locks,
5032 .get_lease_key = smb2_get_lease_key,
5033 .set_lease_key = smb2_set_lease_key,
5034 .new_lease_key = smb2_new_lease_key,
5035 .generate_signingkey = generate_smb311signingkey,
5036 .calc_signature = smb3_calc_signature,
5037 .set_integrity = smb3_set_integrity,
5038 .is_read_op = smb21_is_read_op,
5039 .set_oplock_level = smb3_set_oplock_level,
5040 .create_lease_buf = smb3_create_lease_buf,
5041 .parse_lease_buf = smb3_parse_lease_buf,
5042 .copychunk_range = smb2_copychunk_range,
5043 .duplicate_extents = smb2_duplicate_extents,
5044 /* .validate_negotiate = smb3_validate_negotiate, */ /* not used in 3.11 */
5045 .wp_retry_size = smb2_wp_retry_size,
5046 .dir_needs_close = smb2_dir_needs_close,
5047 .fallocate = smb3_fallocate,
5048 .enum_snapshots = smb3_enum_snapshots,
5049 .notify = smb3_notify,
5050 .init_transform_rq = smb3_init_transform_rq,
5051 .is_transform_hdr = smb3_is_transform_hdr,
5052 .receive_transform = smb3_receive_transform,
5053 .get_dfs_refer = smb2_get_dfs_refer,
5054 .select_sectype = smb2_select_sectype,
5055 #ifdef CONFIG_CIFS_XATTR
5056 .query_all_EAs = smb2_query_eas,
5057 .set_EA = smb2_set_ea,
5058 #endif /* CIFS_XATTR */
5059 .get_acl = get_smb2_acl,
5060 .get_acl_by_fid = get_smb2_acl_by_fid,
5061 .set_acl = set_smb2_acl,
5062 .next_header = smb2_next_header,
5063 .ioctl_query_info = smb2_ioctl_query_info,
5064 .make_node = smb2_make_node,
5065 .fiemap = smb3_fiemap,
5066 .llseek = smb3_llseek,
5069 struct smb_version_values smb20_values = {
5070 .version_string = SMB20_VERSION_STRING,
5071 .protocol_id = SMB20_PROT_ID,
5072 .req_capabilities = 0, /* MBZ */
5073 .large_lock_type = 0,
5074 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
5075 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
5076 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
5077 .header_size = sizeof(struct smb2_sync_hdr),
5078 .header_preamble_size = 0,
5079 .max_header_size = MAX_SMB2_HDR_SIZE,
5080 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
5081 .lock_cmd = SMB2_LOCK,
5083 .cap_nt_find = SMB2_NT_FIND,
5084 .cap_large_files = SMB2_LARGE_FILES,
5085 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
5086 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
5087 .create_lease_size = sizeof(struct create_lease),
5090 struct smb_version_values smb21_values = {
5091 .version_string = SMB21_VERSION_STRING,
5092 .protocol_id = SMB21_PROT_ID,
5093 .req_capabilities = 0, /* MBZ on negotiate req until SMB3 dialect */
5094 .large_lock_type = 0,
5095 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
5096 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
5097 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
5098 .header_size = sizeof(struct smb2_sync_hdr),
5099 .header_preamble_size = 0,
5100 .max_header_size = MAX_SMB2_HDR_SIZE,
5101 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
5102 .lock_cmd = SMB2_LOCK,
5104 .cap_nt_find = SMB2_NT_FIND,
5105 .cap_large_files = SMB2_LARGE_FILES,
5106 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
5107 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
5108 .create_lease_size = sizeof(struct create_lease),
5111 struct smb_version_values smb3any_values = {
5112 .version_string = SMB3ANY_VERSION_STRING,
5113 .protocol_id = SMB302_PROT_ID, /* doesn't matter, send protocol array */
5114 .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,
5115 .large_lock_type = 0,
5116 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
5117 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
5118 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
5119 .header_size = sizeof(struct smb2_sync_hdr),
5120 .header_preamble_size = 0,
5121 .max_header_size = MAX_SMB2_HDR_SIZE,
5122 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
5123 .lock_cmd = SMB2_LOCK,
5125 .cap_nt_find = SMB2_NT_FIND,
5126 .cap_large_files = SMB2_LARGE_FILES,
5127 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
5128 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
5129 .create_lease_size = sizeof(struct create_lease_v2),
5132 struct smb_version_values smbdefault_values = {
5133 .version_string = SMBDEFAULT_VERSION_STRING,
5134 .protocol_id = SMB302_PROT_ID, /* doesn't matter, send protocol array */
5135 .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,
5136 .large_lock_type = 0,
5137 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
5138 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
5139 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
5140 .header_size = sizeof(struct smb2_sync_hdr),
5141 .header_preamble_size = 0,
5142 .max_header_size = MAX_SMB2_HDR_SIZE,
5143 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
5144 .lock_cmd = SMB2_LOCK,
5146 .cap_nt_find = SMB2_NT_FIND,
5147 .cap_large_files = SMB2_LARGE_FILES,
5148 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
5149 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
5150 .create_lease_size = sizeof(struct create_lease_v2),
5153 struct smb_version_values smb30_values = {
5154 .version_string = SMB30_VERSION_STRING,
5155 .protocol_id = SMB30_PROT_ID,
5156 .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,
5157 .large_lock_type = 0,
5158 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
5159 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
5160 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
5161 .header_size = sizeof(struct smb2_sync_hdr),
5162 .header_preamble_size = 0,
5163 .max_header_size = MAX_SMB2_HDR_SIZE,
5164 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
5165 .lock_cmd = SMB2_LOCK,
5167 .cap_nt_find = SMB2_NT_FIND,
5168 .cap_large_files = SMB2_LARGE_FILES,
5169 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
5170 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
5171 .create_lease_size = sizeof(struct create_lease_v2),
5174 struct smb_version_values smb302_values = {
5175 .version_string = SMB302_VERSION_STRING,
5176 .protocol_id = SMB302_PROT_ID,
5177 .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,
5178 .large_lock_type = 0,
5179 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
5180 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
5181 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
5182 .header_size = sizeof(struct smb2_sync_hdr),
5183 .header_preamble_size = 0,
5184 .max_header_size = MAX_SMB2_HDR_SIZE,
5185 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
5186 .lock_cmd = SMB2_LOCK,
5188 .cap_nt_find = SMB2_NT_FIND,
5189 .cap_large_files = SMB2_LARGE_FILES,
5190 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
5191 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
5192 .create_lease_size = sizeof(struct create_lease_v2),
5195 struct smb_version_values smb311_values = {
5196 .version_string = SMB311_VERSION_STRING,
5197 .protocol_id = SMB311_PROT_ID,
5198 .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,
5199 .large_lock_type = 0,
5200 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
5201 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
5202 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
5203 .header_size = sizeof(struct smb2_sync_hdr),
5204 .header_preamble_size = 0,
5205 .max_header_size = MAX_SMB2_HDR_SIZE,
5206 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
5207 .lock_cmd = SMB2_LOCK,
5209 .cap_nt_find = SMB2_NT_FIND,
5210 .cap_large_files = SMB2_LARGE_FILES,
5211 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
5212 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
5213 .create_lease_size = sizeof(struct create_lease_v2),