2 * SMB2 version specific operations
4 * Copyright (c) 2012, Jeff Layton <jlayton@redhat.com>
6 * This library is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License v2 as published
8 * by the Free Software Foundation.
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
13 * the GNU Lesser General Public License for more details.
15 * You should have received a copy of the GNU Lesser General Public License
16 * along with this library; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 #include <linux/pagemap.h>
21 #include <linux/vfs.h>
22 #include <linux/falloc.h>
23 #include <linux/scatterlist.h>
24 #include <linux/uuid.h>
25 #include <crypto/aead.h>
28 #include "smb2proto.h"
29 #include "cifsproto.h"
30 #include "cifs_debug.h"
31 #include "cifs_unicode.h"
32 #include "smb2status.h"
34 #include "cifs_ioctl.h"
35 #include "smbdirect.h"
38 change_conf(struct TCP_Server_Info *server)
40 server->credits += server->echo_credits + server->oplock_credits;
41 server->oplock_credits = server->echo_credits = 0;
42 switch (server->credits) {
46 server->echoes = false;
47 server->oplocks = false;
48 cifs_dbg(VFS, "disabling echoes and oplocks\n");
51 server->echoes = true;
52 server->oplocks = false;
53 server->echo_credits = 1;
54 cifs_dbg(FYI, "disabling oplocks\n");
57 server->echoes = true;
59 server->oplocks = true;
60 server->oplock_credits = 1;
62 server->oplocks = false;
64 server->echo_credits = 1;
66 server->credits -= server->echo_credits + server->oplock_credits;
71 smb2_add_credits(struct TCP_Server_Info *server, const unsigned int add,
75 spin_lock(&server->req_lock);
76 val = server->ops->get_credits_field(server, optype);
79 *val = 65000; /* Don't get near 64K credits, avoid srv bugs */
80 printk_once(KERN_WARNING "server overflowed SMB3 credits\n");
83 if (server->in_flight == 0 && (optype & CIFS_OP_MASK) != CIFS_NEG_OP)
84 rc = change_conf(server);
86 * Sometimes server returns 0 credits on oplock break ack - we need to
87 * rebalance credits in this case.
89 else if (server->in_flight > 0 && server->oplock_credits == 0 &&
91 if (server->credits > 1) {
93 server->oplock_credits++;
96 spin_unlock(&server->req_lock);
97 wake_up(&server->request_q);
99 cifs_reconnect(server);
103 smb2_set_credits(struct TCP_Server_Info *server, const int val)
105 spin_lock(&server->req_lock);
106 server->credits = val;
107 spin_unlock(&server->req_lock);
111 smb2_get_credits_field(struct TCP_Server_Info *server, const int optype)
115 return &server->echo_credits;
117 return &server->oplock_credits;
119 return &server->credits;
124 smb2_get_credits(struct mid_q_entry *mid)
126 struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)mid->resp_buf;
128 return le16_to_cpu(shdr->CreditRequest);
132 smb2_wait_mtu_credits(struct TCP_Server_Info *server, unsigned int size,
133 unsigned int *num, unsigned int *credits)
136 unsigned int scredits;
138 spin_lock(&server->req_lock);
140 if (server->credits <= 0) {
141 spin_unlock(&server->req_lock);
142 cifs_num_waiters_inc(server);
143 rc = wait_event_killable(server->request_q,
144 has_credits(server, &server->credits));
145 cifs_num_waiters_dec(server);
148 spin_lock(&server->req_lock);
150 if (server->tcpStatus == CifsExiting) {
151 spin_unlock(&server->req_lock);
155 scredits = server->credits;
156 /* can deadlock with reopen */
158 *num = SMB2_MAX_BUFFER_SIZE;
163 /* leave one credit for a possible reopen */
165 *num = min_t(unsigned int, size,
166 scredits * SMB2_MAX_BUFFER_SIZE);
168 *credits = DIV_ROUND_UP(*num, SMB2_MAX_BUFFER_SIZE);
169 server->credits -= *credits;
174 spin_unlock(&server->req_lock);
179 smb2_get_next_mid(struct TCP_Server_Info *server)
182 /* for SMB2 we need the current value */
183 spin_lock(&GlobalMid_Lock);
184 mid = server->CurrentMid++;
185 spin_unlock(&GlobalMid_Lock);
189 static struct mid_q_entry *
190 smb2_find_mid(struct TCP_Server_Info *server, char *buf)
192 struct mid_q_entry *mid;
193 struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)buf;
194 __u64 wire_mid = le64_to_cpu(shdr->MessageId);
196 if (shdr->ProtocolId == SMB2_TRANSFORM_PROTO_NUM) {
197 cifs_dbg(VFS, "encrypted frame parsing not supported yet");
201 spin_lock(&GlobalMid_Lock);
202 list_for_each_entry(mid, &server->pending_mid_q, qhead) {
203 if ((mid->mid == wire_mid) &&
204 (mid->mid_state == MID_REQUEST_SUBMITTED) &&
205 (mid->command == shdr->Command)) {
206 kref_get(&mid->refcount);
207 spin_unlock(&GlobalMid_Lock);
211 spin_unlock(&GlobalMid_Lock);
216 smb2_dump_detail(void *buf, struct TCP_Server_Info *server)
218 #ifdef CONFIG_CIFS_DEBUG2
219 struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)buf;
221 cifs_dbg(VFS, "Cmd: %d Err: 0x%x Flags: 0x%x Mid: %llu Pid: %d\n",
222 shdr->Command, shdr->Status, shdr->Flags, shdr->MessageId,
224 cifs_dbg(VFS, "smb buf %p len %u\n", buf,
225 server->ops->calc_smb_size(buf, server));
230 smb2_need_neg(struct TCP_Server_Info *server)
232 return server->max_read == 0;
236 smb2_negotiate(const unsigned int xid, struct cifs_ses *ses)
239 ses->server->CurrentMid = 0;
240 rc = SMB2_negotiate(xid, ses);
241 /* BB we probably don't need to retry with modern servers */
248 smb2_negotiate_wsize(struct cifs_tcon *tcon, struct smb_vol *volume_info)
250 struct TCP_Server_Info *server = tcon->ses->server;
253 /* start with specified wsize, or default */
254 wsize = volume_info->wsize ? volume_info->wsize : CIFS_DEFAULT_IOSIZE;
255 wsize = min_t(unsigned int, wsize, server->max_write);
256 #ifdef CONFIG_CIFS_SMB_DIRECT
259 wsize = min_t(unsigned int,
260 wsize, server->smbd_conn->max_fragmented_send_size);
262 wsize = min_t(unsigned int,
263 wsize, server->smbd_conn->max_readwrite_size);
266 if (!(server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU))
267 wsize = min_t(unsigned int, wsize, SMB2_MAX_BUFFER_SIZE);
273 smb2_negotiate_rsize(struct cifs_tcon *tcon, struct smb_vol *volume_info)
275 struct TCP_Server_Info *server = tcon->ses->server;
278 /* start with specified rsize, or default */
279 rsize = volume_info->rsize ? volume_info->rsize : CIFS_DEFAULT_IOSIZE;
280 rsize = min_t(unsigned int, rsize, server->max_read);
281 #ifdef CONFIG_CIFS_SMB_DIRECT
284 rsize = min_t(unsigned int,
285 rsize, server->smbd_conn->max_fragmented_recv_size);
287 rsize = min_t(unsigned int,
288 rsize, server->smbd_conn->max_readwrite_size);
292 if (!(server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU))
293 rsize = min_t(unsigned int, rsize, SMB2_MAX_BUFFER_SIZE);
300 parse_server_interfaces(struct network_interface_info_ioctl_rsp *buf,
302 struct cifs_server_iface **iface_list,
305 struct network_interface_info_ioctl_rsp *p;
306 struct sockaddr_in *addr4;
307 struct sockaddr_in6 *addr6;
308 struct iface_info_ipv4 *p4;
309 struct iface_info_ipv6 *p6;
310 struct cifs_server_iface *info;
320 * Fist pass: count and sanity check
323 bytes_left = buf_len;
325 while (bytes_left >= sizeof(*p)) {
327 next = le32_to_cpu(p->Next);
329 bytes_left -= sizeof(*p);
332 p = (struct network_interface_info_ioctl_rsp *)((u8 *)p+next);
337 cifs_dbg(VFS, "%s: malformed interface info\n", __func__);
342 if (bytes_left || p->Next)
343 cifs_dbg(VFS, "%s: incomplete interface info\n", __func__);
347 * Second pass: extract info to internal structure
350 *iface_list = kcalloc(nb_iface, sizeof(**iface_list), GFP_KERNEL);
357 bytes_left = buf_len;
359 while (bytes_left >= sizeof(*p)) {
360 info->speed = le64_to_cpu(p->LinkSpeed);
361 info->rdma_capable = le32_to_cpu(p->Capability & RDMA_CAPABLE);
362 info->rss_capable = le32_to_cpu(p->Capability & RSS_CAPABLE);
364 cifs_dbg(FYI, "%s: adding iface %zu\n", __func__, *iface_count);
365 cifs_dbg(FYI, "%s: speed %zu bps\n", __func__, info->speed);
366 cifs_dbg(FYI, "%s: capabilities 0x%08x\n", __func__,
367 le32_to_cpu(p->Capability));
371 * The kernel and wire socket structures have the same
372 * layout and use network byte order but make the
373 * conversion explicit in case either one changes.
376 addr4 = (struct sockaddr_in *)&info->sockaddr;
377 p4 = (struct iface_info_ipv4 *)p->Buffer;
378 addr4->sin_family = AF_INET;
379 memcpy(&addr4->sin_addr, &p4->IPv4Address, 4);
381 /* [MS-SMB2] 2.2.32.5.1.1 Clients MUST ignore these */
382 addr4->sin_port = cpu_to_be16(CIFS_PORT);
384 cifs_dbg(FYI, "%s: ipv4 %pI4\n", __func__,
388 addr6 = (struct sockaddr_in6 *)&info->sockaddr;
389 p6 = (struct iface_info_ipv6 *)p->Buffer;
390 addr6->sin6_family = AF_INET6;
391 memcpy(&addr6->sin6_addr, &p6->IPv6Address, 16);
393 /* [MS-SMB2] 2.2.32.5.1.2 Clients MUST ignore these */
394 addr6->sin6_flowinfo = 0;
395 addr6->sin6_scope_id = 0;
396 addr6->sin6_port = cpu_to_be16(CIFS_PORT);
398 cifs_dbg(FYI, "%s: ipv6 %pI6\n", __func__,
403 "%s: skipping unsupported socket family\n",
411 next = le32_to_cpu(p->Next);
414 p = (struct network_interface_info_ioctl_rsp *)((u8 *)p+next);
434 SMB3_request_interfaces(const unsigned int xid, struct cifs_tcon *tcon)
437 unsigned int ret_data_len = 0;
438 struct network_interface_info_ioctl_rsp *out_buf = NULL;
439 struct cifs_server_iface *iface_list;
441 struct cifs_ses *ses = tcon->ses;
443 rc = SMB2_ioctl(xid, tcon, NO_FILE_ID, NO_FILE_ID,
444 FSCTL_QUERY_NETWORK_INTERFACE_INFO, true /* is_fsctl */,
445 NULL /* no data input */, 0 /* no data input */,
446 (char **)&out_buf, &ret_data_len);
447 if (rc == -EOPNOTSUPP) {
449 "server does not support query network interfaces\n");
451 } else if (rc != 0) {
452 cifs_dbg(VFS, "error %d on ioctl to get interface list\n", rc);
456 rc = parse_server_interfaces(out_buf, ret_data_len,
457 &iface_list, &iface_count);
461 spin_lock(&ses->iface_lock);
462 kfree(ses->iface_list);
463 ses->iface_list = iface_list;
464 ses->iface_count = iface_count;
465 ses->iface_last_update = jiffies;
466 spin_unlock(&ses->iface_lock);
474 smb2_close_cached_fid(struct kref *ref)
476 struct cached_fid *cfid = container_of(ref, struct cached_fid,
479 if (cfid->is_valid) {
480 cifs_dbg(FYI, "clear cached root file handle\n");
481 SMB2_close(0, cfid->tcon, cfid->fid->persistent_fid,
482 cfid->fid->volatile_fid);
483 cfid->is_valid = false;
487 void close_shroot(struct cached_fid *cfid)
489 mutex_lock(&cfid->fid_mutex);
490 kref_put(&cfid->refcount, smb2_close_cached_fid);
491 mutex_unlock(&cfid->fid_mutex);
495 smb2_cached_lease_break(struct work_struct *work)
497 struct cached_fid *cfid = container_of(work,
498 struct cached_fid, lease_break);
504 * Open the directory at the root of a share
506 int open_shroot(unsigned int xid, struct cifs_tcon *tcon, struct cifs_fid *pfid)
508 struct cifs_open_parms oparams;
510 __le16 srch_path = 0; /* Null - since an open of top of share */
511 u8 oplock = SMB2_OPLOCK_LEVEL_II;
513 mutex_lock(&tcon->crfid.fid_mutex);
514 if (tcon->crfid.is_valid) {
515 cifs_dbg(FYI, "found a cached root file handle\n");
516 memcpy(pfid, tcon->crfid.fid, sizeof(struct cifs_fid));
517 kref_get(&tcon->crfid.refcount);
518 mutex_unlock(&tcon->crfid.fid_mutex);
523 oparams.create_options = 0;
524 oparams.desired_access = FILE_READ_ATTRIBUTES;
525 oparams.disposition = FILE_OPEN;
527 oparams.reconnect = false;
529 rc = SMB2_open(xid, &oparams, &srch_path, &oplock, NULL, NULL, NULL);
531 memcpy(tcon->crfid.fid, pfid, sizeof(struct cifs_fid));
532 tcon->crfid.tcon = tcon;
533 tcon->crfid.is_valid = true;
534 kref_init(&tcon->crfid.refcount);
535 kref_get(&tcon->crfid.refcount);
537 mutex_unlock(&tcon->crfid.fid_mutex);
542 smb3_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon)
545 __le16 srch_path = 0; /* Null - open root of share */
546 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
547 struct cifs_open_parms oparms;
549 bool no_cached_open = tcon->nohandlecache;
552 oparms.desired_access = FILE_READ_ATTRIBUTES;
553 oparms.disposition = FILE_OPEN;
554 oparms.create_options = 0;
556 oparms.reconnect = false;
559 rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL,
562 rc = open_shroot(xid, tcon, &fid);
567 SMB3_request_interfaces(xid, tcon);
569 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
570 FS_ATTRIBUTE_INFORMATION);
571 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
572 FS_DEVICE_INFORMATION);
573 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
574 FS_VOLUME_INFORMATION);
575 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
576 FS_SECTOR_SIZE_INFORMATION); /* SMB3 specific */
578 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
580 close_shroot(&tcon->crfid);
586 smb2_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon)
589 __le16 srch_path = 0; /* Null - open root of share */
590 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
591 struct cifs_open_parms oparms;
595 oparms.desired_access = FILE_READ_ATTRIBUTES;
596 oparms.disposition = FILE_OPEN;
597 oparms.create_options = 0;
599 oparms.reconnect = false;
601 rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL, NULL);
605 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
606 FS_ATTRIBUTE_INFORMATION);
607 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
608 FS_DEVICE_INFORMATION);
609 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
614 smb2_is_path_accessible(const unsigned int xid, struct cifs_tcon *tcon,
615 struct cifs_sb_info *cifs_sb, const char *full_path)
619 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
620 struct cifs_open_parms oparms;
623 if ((*full_path == 0) && tcon->crfid.is_valid)
626 utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb);
631 oparms.desired_access = FILE_READ_ATTRIBUTES;
632 oparms.disposition = FILE_OPEN;
633 oparms.create_options = 0;
635 oparms.reconnect = false;
637 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL, NULL);
643 rc = SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
649 smb2_get_srv_inum(const unsigned int xid, struct cifs_tcon *tcon,
650 struct cifs_sb_info *cifs_sb, const char *full_path,
651 u64 *uniqueid, FILE_ALL_INFO *data)
653 *uniqueid = le64_to_cpu(data->IndexNumber);
658 smb2_query_file_info(const unsigned int xid, struct cifs_tcon *tcon,
659 struct cifs_fid *fid, FILE_ALL_INFO *data)
662 struct smb2_file_all_info *smb2_data;
664 smb2_data = kzalloc(sizeof(struct smb2_file_all_info) + PATH_MAX * 2,
666 if (smb2_data == NULL)
669 rc = SMB2_query_info(xid, tcon, fid->persistent_fid, fid->volatile_fid,
672 move_smb2_info_to_cifs(data, smb2_data);
677 #ifdef CONFIG_CIFS_XATTR
679 move_smb2_ea_to_cifs(char *dst, size_t dst_size,
680 struct smb2_file_full_ea_info *src, size_t src_size,
681 const unsigned char *ea_name)
684 unsigned int ea_name_len = ea_name ? strlen(ea_name) : 0;
686 size_t name_len, value_len, user_name_len;
688 while (src_size > 0) {
689 name = &src->ea_data[0];
690 name_len = (size_t)src->ea_name_length;
691 value = &src->ea_data[src->ea_name_length + 1];
692 value_len = (size_t)le16_to_cpu(src->ea_value_length);
698 if (src_size < 8 + name_len + 1 + value_len) {
699 cifs_dbg(FYI, "EA entry goes beyond length of list\n");
705 if (ea_name_len == name_len &&
706 memcmp(ea_name, name, name_len) == 0) {
710 if (dst_size < value_len) {
714 memcpy(dst, value, value_len);
718 /* 'user.' plus a terminating null */
719 user_name_len = 5 + 1 + name_len;
723 if (dst_size >= user_name_len) {
724 dst_size -= user_name_len;
725 memcpy(dst, "user.", 5);
727 memcpy(dst, src->ea_data, name_len);
731 } else if (dst_size == 0) {
732 /* skip copy - calc size only */
734 /* stop before overrun buffer */
740 if (!src->next_entry_offset)
743 if (src_size < le32_to_cpu(src->next_entry_offset)) {
744 /* stop before overrun buffer */
748 src_size -= le32_to_cpu(src->next_entry_offset);
749 src = (void *)((char *)src +
750 le32_to_cpu(src->next_entry_offset));
753 /* didn't find the named attribute */
762 smb2_query_eas(const unsigned int xid, struct cifs_tcon *tcon,
763 const unsigned char *path, const unsigned char *ea_name,
764 char *ea_data, size_t buf_size,
765 struct cifs_sb_info *cifs_sb)
769 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
770 struct cifs_open_parms oparms;
772 struct smb2_file_full_ea_info *smb2_data;
773 int ea_buf_size = SMB2_MIN_EA_BUF;
775 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
780 oparms.desired_access = FILE_READ_EA;
781 oparms.disposition = FILE_OPEN;
782 oparms.create_options = 0;
784 oparms.reconnect = false;
786 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL, NULL);
789 cifs_dbg(FYI, "open failed rc=%d\n", rc);
794 smb2_data = kzalloc(ea_buf_size, GFP_KERNEL);
795 if (smb2_data == NULL) {
796 SMB2_close(xid, tcon, fid.persistent_fid,
801 rc = SMB2_query_eas(xid, tcon, fid.persistent_fid,
803 ea_buf_size, smb2_data);
811 if (ea_buf_size > SMB2_MAX_EA_BUF) {
812 cifs_dbg(VFS, "EA size is too large\n");
813 SMB2_close(xid, tcon, fid.persistent_fid,
819 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
822 * If ea_name is NULL (listxattr) and there are no EAs, return 0 as it's
823 * not an error. Otherwise, the specified ea_name was not found.
826 rc = move_smb2_ea_to_cifs(ea_data, buf_size, smb2_data,
827 SMB2_MAX_EA_BUF, ea_name);
828 else if (!ea_name && rc == -ENODATA)
837 smb2_set_ea(const unsigned int xid, struct cifs_tcon *tcon,
838 const char *path, const char *ea_name, const void *ea_value,
839 const __u16 ea_value_len, const struct nls_table *nls_codepage,
840 struct cifs_sb_info *cifs_sb)
844 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
845 struct cifs_open_parms oparms;
847 struct smb2_file_full_ea_info *ea;
848 int ea_name_len = strlen(ea_name);
851 if (ea_name_len > 255)
854 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
859 oparms.desired_access = FILE_WRITE_EA;
860 oparms.disposition = FILE_OPEN;
861 oparms.create_options = 0;
863 oparms.reconnect = false;
865 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL, NULL);
868 cifs_dbg(FYI, "open failed rc=%d\n", rc);
872 len = sizeof(ea) + ea_name_len + ea_value_len + 1;
873 ea = kzalloc(len, GFP_KERNEL);
875 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
879 ea->ea_name_length = ea_name_len;
880 ea->ea_value_length = cpu_to_le16(ea_value_len);
881 memcpy(ea->ea_data, ea_name, ea_name_len + 1);
882 memcpy(ea->ea_data + ea_name_len + 1, ea_value, ea_value_len);
884 rc = SMB2_set_ea(xid, tcon, fid.persistent_fid, fid.volatile_fid, ea,
888 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
895 smb2_can_echo(struct TCP_Server_Info *server)
897 return server->echoes;
901 smb2_clear_stats(struct cifs_tcon *tcon)
904 for (i = 0; i < NUMBER_OF_SMB2_COMMANDS; i++) {
905 atomic_set(&tcon->stats.smb2_stats.smb2_com_sent[i], 0);
906 atomic_set(&tcon->stats.smb2_stats.smb2_com_failed[i], 0);
911 smb2_dump_share_caps(struct seq_file *m, struct cifs_tcon *tcon)
913 seq_puts(m, "\n\tShare Capabilities:");
914 if (tcon->capabilities & SMB2_SHARE_CAP_DFS)
915 seq_puts(m, " DFS,");
916 if (tcon->capabilities & SMB2_SHARE_CAP_CONTINUOUS_AVAILABILITY)
917 seq_puts(m, " CONTINUOUS AVAILABILITY,");
918 if (tcon->capabilities & SMB2_SHARE_CAP_SCALEOUT)
919 seq_puts(m, " SCALEOUT,");
920 if (tcon->capabilities & SMB2_SHARE_CAP_CLUSTER)
921 seq_puts(m, " CLUSTER,");
922 if (tcon->capabilities & SMB2_SHARE_CAP_ASYMMETRIC)
923 seq_puts(m, " ASYMMETRIC,");
924 if (tcon->capabilities == 0)
925 seq_puts(m, " None");
926 if (tcon->ss_flags & SSINFO_FLAGS_ALIGNED_DEVICE)
927 seq_puts(m, " Aligned,");
928 if (tcon->ss_flags & SSINFO_FLAGS_PARTITION_ALIGNED_ON_DEVICE)
929 seq_puts(m, " Partition Aligned,");
930 if (tcon->ss_flags & SSINFO_FLAGS_NO_SEEK_PENALTY)
931 seq_puts(m, " SSD,");
932 if (tcon->ss_flags & SSINFO_FLAGS_TRIM_ENABLED)
933 seq_puts(m, " TRIM-support,");
935 seq_printf(m, "\tShare Flags: 0x%x", tcon->share_flags);
936 seq_printf(m, "\n\ttid: 0x%x", tcon->tid);
937 if (tcon->perf_sector_size)
938 seq_printf(m, "\tOptimal sector size: 0x%x",
939 tcon->perf_sector_size);
940 seq_printf(m, "\tMaximal Access: 0x%x", tcon->maximal_access);
944 smb2_print_stats(struct seq_file *m, struct cifs_tcon *tcon)
946 atomic_t *sent = tcon->stats.smb2_stats.smb2_com_sent;
947 atomic_t *failed = tcon->stats.smb2_stats.smb2_com_failed;
950 * Can't display SMB2_NEGOTIATE, SESSION_SETUP, LOGOFF, CANCEL and ECHO
951 * totals (requests sent) since those SMBs are per-session not per tcon
953 seq_printf(m, "\nBytes read: %llu Bytes written: %llu",
954 (long long)(tcon->bytes_read),
955 (long long)(tcon->bytes_written));
956 seq_printf(m, "\nTreeConnects: %d total %d failed",
957 atomic_read(&sent[SMB2_TREE_CONNECT_HE]),
958 atomic_read(&failed[SMB2_TREE_CONNECT_HE]));
959 seq_printf(m, "\nTreeDisconnects: %d total %d failed",
960 atomic_read(&sent[SMB2_TREE_DISCONNECT_HE]),
961 atomic_read(&failed[SMB2_TREE_DISCONNECT_HE]));
962 seq_printf(m, "\nCreates: %d total %d failed",
963 atomic_read(&sent[SMB2_CREATE_HE]),
964 atomic_read(&failed[SMB2_CREATE_HE]));
965 seq_printf(m, "\nCloses: %d total %d failed",
966 atomic_read(&sent[SMB2_CLOSE_HE]),
967 atomic_read(&failed[SMB2_CLOSE_HE]));
968 seq_printf(m, "\nFlushes: %d total %d failed",
969 atomic_read(&sent[SMB2_FLUSH_HE]),
970 atomic_read(&failed[SMB2_FLUSH_HE]));
971 seq_printf(m, "\nReads: %d total %d failed",
972 atomic_read(&sent[SMB2_READ_HE]),
973 atomic_read(&failed[SMB2_READ_HE]));
974 seq_printf(m, "\nWrites: %d total %d failed",
975 atomic_read(&sent[SMB2_WRITE_HE]),
976 atomic_read(&failed[SMB2_WRITE_HE]));
977 seq_printf(m, "\nLocks: %d total %d failed",
978 atomic_read(&sent[SMB2_LOCK_HE]),
979 atomic_read(&failed[SMB2_LOCK_HE]));
980 seq_printf(m, "\nIOCTLs: %d total %d failed",
981 atomic_read(&sent[SMB2_IOCTL_HE]),
982 atomic_read(&failed[SMB2_IOCTL_HE]));
983 seq_printf(m, "\nQueryDirectories: %d total %d failed",
984 atomic_read(&sent[SMB2_QUERY_DIRECTORY_HE]),
985 atomic_read(&failed[SMB2_QUERY_DIRECTORY_HE]));
986 seq_printf(m, "\nChangeNotifies: %d total %d failed",
987 atomic_read(&sent[SMB2_CHANGE_NOTIFY_HE]),
988 atomic_read(&failed[SMB2_CHANGE_NOTIFY_HE]));
989 seq_printf(m, "\nQueryInfos: %d total %d failed",
990 atomic_read(&sent[SMB2_QUERY_INFO_HE]),
991 atomic_read(&failed[SMB2_QUERY_INFO_HE]));
992 seq_printf(m, "\nSetInfos: %d total %d failed",
993 atomic_read(&sent[SMB2_SET_INFO_HE]),
994 atomic_read(&failed[SMB2_SET_INFO_HE]));
995 seq_printf(m, "\nOplockBreaks: %d sent %d failed",
996 atomic_read(&sent[SMB2_OPLOCK_BREAK_HE]),
997 atomic_read(&failed[SMB2_OPLOCK_BREAK_HE]));
1001 smb2_set_fid(struct cifsFileInfo *cfile, struct cifs_fid *fid, __u32 oplock)
1003 struct cifsInodeInfo *cinode = CIFS_I(d_inode(cfile->dentry));
1004 struct TCP_Server_Info *server = tlink_tcon(cfile->tlink)->ses->server;
1006 cfile->fid.persistent_fid = fid->persistent_fid;
1007 cfile->fid.volatile_fid = fid->volatile_fid;
1008 server->ops->set_oplock_level(cinode, oplock, fid->epoch,
1010 cinode->can_cache_brlcks = CIFS_CACHE_WRITE(cinode);
1011 memcpy(cfile->fid.create_guid, fid->create_guid, 16);
1015 smb2_close_file(const unsigned int xid, struct cifs_tcon *tcon,
1016 struct cifs_fid *fid)
1018 SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
1022 SMB2_request_res_key(const unsigned int xid, struct cifs_tcon *tcon,
1023 u64 persistent_fid, u64 volatile_fid,
1024 struct copychunk_ioctl *pcchunk)
1027 unsigned int ret_data_len;
1028 struct resume_key_req *res_key;
1030 rc = SMB2_ioctl(xid, tcon, persistent_fid, volatile_fid,
1031 FSCTL_SRV_REQUEST_RESUME_KEY, true /* is_fsctl */,
1032 NULL, 0 /* no input */,
1033 (char **)&res_key, &ret_data_len);
1036 cifs_dbg(VFS, "refcpy ioctl error %d getting resume key\n", rc);
1037 goto req_res_key_exit;
1039 if (ret_data_len < sizeof(struct resume_key_req)) {
1040 cifs_dbg(VFS, "Invalid refcopy resume key length\n");
1042 goto req_res_key_exit;
1044 memcpy(pcchunk->SourceKey, res_key->ResumeKey, COPY_CHUNK_RES_KEY_SIZE);
1052 smb2_copychunk_range(const unsigned int xid,
1053 struct cifsFileInfo *srcfile,
1054 struct cifsFileInfo *trgtfile, u64 src_off,
1055 u64 len, u64 dest_off)
1058 unsigned int ret_data_len;
1059 struct copychunk_ioctl *pcchunk;
1060 struct copychunk_ioctl_rsp *retbuf = NULL;
1061 struct cifs_tcon *tcon;
1062 int chunks_copied = 0;
1063 bool chunk_sizes_updated = false;
1064 ssize_t bytes_written, total_bytes_written = 0;
1066 pcchunk = kmalloc(sizeof(struct copychunk_ioctl), GFP_KERNEL);
1068 if (pcchunk == NULL)
1071 cifs_dbg(FYI, "in smb2_copychunk_range - about to call request res key\n");
1072 /* Request a key from the server to identify the source of the copy */
1073 rc = SMB2_request_res_key(xid, tlink_tcon(srcfile->tlink),
1074 srcfile->fid.persistent_fid,
1075 srcfile->fid.volatile_fid, pcchunk);
1077 /* Note: request_res_key sets res_key null only if rc !=0 */
1081 /* For now array only one chunk long, will make more flexible later */
1082 pcchunk->ChunkCount = cpu_to_le32(1);
1083 pcchunk->Reserved = 0;
1084 pcchunk->Reserved2 = 0;
1086 tcon = tlink_tcon(trgtfile->tlink);
1089 pcchunk->SourceOffset = cpu_to_le64(src_off);
1090 pcchunk->TargetOffset = cpu_to_le64(dest_off);
1092 cpu_to_le32(min_t(u32, len, tcon->max_bytes_chunk));
1094 /* Request server copy to target from src identified by key */
1095 rc = SMB2_ioctl(xid, tcon, trgtfile->fid.persistent_fid,
1096 trgtfile->fid.volatile_fid, FSCTL_SRV_COPYCHUNK_WRITE,
1097 true /* is_fsctl */, (char *)pcchunk,
1098 sizeof(struct copychunk_ioctl), (char **)&retbuf,
1102 sizeof(struct copychunk_ioctl_rsp)) {
1103 cifs_dbg(VFS, "invalid cchunk response size\n");
1107 if (retbuf->TotalBytesWritten == 0) {
1108 cifs_dbg(FYI, "no bytes copied\n");
1113 * Check if server claimed to write more than we asked
1115 if (le32_to_cpu(retbuf->TotalBytesWritten) >
1116 le32_to_cpu(pcchunk->Length)) {
1117 cifs_dbg(VFS, "invalid copy chunk response\n");
1121 if (le32_to_cpu(retbuf->ChunksWritten) != 1) {
1122 cifs_dbg(VFS, "invalid num chunks written\n");
1128 bytes_written = le32_to_cpu(retbuf->TotalBytesWritten);
1129 src_off += bytes_written;
1130 dest_off += bytes_written;
1131 len -= bytes_written;
1132 total_bytes_written += bytes_written;
1134 cifs_dbg(FYI, "Chunks %d PartialChunk %d Total %zu\n",
1135 le32_to_cpu(retbuf->ChunksWritten),
1136 le32_to_cpu(retbuf->ChunkBytesWritten),
1138 } else if (rc == -EINVAL) {
1139 if (ret_data_len != sizeof(struct copychunk_ioctl_rsp))
1142 cifs_dbg(FYI, "MaxChunks %d BytesChunk %d MaxCopy %d\n",
1143 le32_to_cpu(retbuf->ChunksWritten),
1144 le32_to_cpu(retbuf->ChunkBytesWritten),
1145 le32_to_cpu(retbuf->TotalBytesWritten));
1148 * Check if this is the first request using these sizes,
1149 * (ie check if copy succeed once with original sizes
1150 * and check if the server gave us different sizes after
1151 * we already updated max sizes on previous request).
1152 * if not then why is the server returning an error now
1154 if ((chunks_copied != 0) || chunk_sizes_updated)
1157 /* Check that server is not asking us to grow size */
1158 if (le32_to_cpu(retbuf->ChunkBytesWritten) <
1159 tcon->max_bytes_chunk)
1160 tcon->max_bytes_chunk =
1161 le32_to_cpu(retbuf->ChunkBytesWritten);
1163 goto cchunk_out; /* server gave us bogus size */
1165 /* No need to change MaxChunks since already set to 1 */
1166 chunk_sizes_updated = true;
1177 return total_bytes_written;
1181 smb2_flush_file(const unsigned int xid, struct cifs_tcon *tcon,
1182 struct cifs_fid *fid)
1184 return SMB2_flush(xid, tcon, fid->persistent_fid, fid->volatile_fid);
1188 smb2_read_data_offset(char *buf)
1190 struct smb2_read_rsp *rsp = (struct smb2_read_rsp *)buf;
1191 return rsp->DataOffset;
1195 smb2_read_data_length(char *buf, bool in_remaining)
1197 struct smb2_read_rsp *rsp = (struct smb2_read_rsp *)buf;
1200 return le32_to_cpu(rsp->DataRemaining);
1202 return le32_to_cpu(rsp->DataLength);
1207 smb2_sync_read(const unsigned int xid, struct cifs_fid *pfid,
1208 struct cifs_io_parms *parms, unsigned int *bytes_read,
1209 char **buf, int *buf_type)
1211 parms->persistent_fid = pfid->persistent_fid;
1212 parms->volatile_fid = pfid->volatile_fid;
1213 return SMB2_read(xid, parms, bytes_read, buf, buf_type);
1217 smb2_sync_write(const unsigned int xid, struct cifs_fid *pfid,
1218 struct cifs_io_parms *parms, unsigned int *written,
1219 struct kvec *iov, unsigned long nr_segs)
1222 parms->persistent_fid = pfid->persistent_fid;
1223 parms->volatile_fid = pfid->volatile_fid;
1224 return SMB2_write(xid, parms, written, iov, nr_segs);
1227 /* Set or clear the SPARSE_FILE attribute based on value passed in setsparse */
1228 static bool smb2_set_sparse(const unsigned int xid, struct cifs_tcon *tcon,
1229 struct cifsFileInfo *cfile, struct inode *inode, __u8 setsparse)
1231 struct cifsInodeInfo *cifsi;
1234 cifsi = CIFS_I(inode);
1236 /* if file already sparse don't bother setting sparse again */
1237 if ((cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) && setsparse)
1238 return true; /* already sparse */
1240 if (!(cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) && !setsparse)
1241 return true; /* already not sparse */
1244 * Can't check for sparse support on share the usual way via the
1245 * FS attribute info (FILE_SUPPORTS_SPARSE_FILES) on the share
1246 * since Samba server doesn't set the flag on the share, yet
1247 * supports the set sparse FSCTL and returns sparse correctly
1248 * in the file attributes. If we fail setting sparse though we
1249 * mark that server does not support sparse files for this share
1250 * to avoid repeatedly sending the unsupported fsctl to server
1251 * if the file is repeatedly extended.
1253 if (tcon->broken_sparse_sup)
1256 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
1257 cfile->fid.volatile_fid, FSCTL_SET_SPARSE,
1259 &setsparse, 1, NULL, NULL);
1261 tcon->broken_sparse_sup = true;
1262 cifs_dbg(FYI, "set sparse rc = %d\n", rc);
1267 cifsi->cifsAttrs |= FILE_ATTRIBUTE_SPARSE_FILE;
1269 cifsi->cifsAttrs &= (~FILE_ATTRIBUTE_SPARSE_FILE);
1275 smb2_set_file_size(const unsigned int xid, struct cifs_tcon *tcon,
1276 struct cifsFileInfo *cfile, __u64 size, bool set_alloc)
1278 __le64 eof = cpu_to_le64(size);
1279 struct inode *inode;
1282 * If extending file more than one page make sparse. Many Linux fs
1283 * make files sparse by default when extending via ftruncate
1285 inode = d_inode(cfile->dentry);
1287 if (!set_alloc && (size > inode->i_size + 8192)) {
1288 __u8 set_sparse = 1;
1290 /* whether set sparse succeeds or not, extend the file */
1291 smb2_set_sparse(xid, tcon, cfile, inode, set_sparse);
1294 return SMB2_set_eof(xid, tcon, cfile->fid.persistent_fid,
1295 cfile->fid.volatile_fid, cfile->pid, &eof, false);
1299 smb2_duplicate_extents(const unsigned int xid,
1300 struct cifsFileInfo *srcfile,
1301 struct cifsFileInfo *trgtfile, u64 src_off,
1302 u64 len, u64 dest_off)
1305 unsigned int ret_data_len;
1306 struct duplicate_extents_to_file dup_ext_buf;
1307 struct cifs_tcon *tcon = tlink_tcon(trgtfile->tlink);
1309 /* server fileays advertise duplicate extent support with this flag */
1310 if ((le32_to_cpu(tcon->fsAttrInfo.Attributes) &
1311 FILE_SUPPORTS_BLOCK_REFCOUNTING) == 0)
1314 dup_ext_buf.VolatileFileHandle = srcfile->fid.volatile_fid;
1315 dup_ext_buf.PersistentFileHandle = srcfile->fid.persistent_fid;
1316 dup_ext_buf.SourceFileOffset = cpu_to_le64(src_off);
1317 dup_ext_buf.TargetFileOffset = cpu_to_le64(dest_off);
1318 dup_ext_buf.ByteCount = cpu_to_le64(len);
1319 cifs_dbg(FYI, "duplicate extents: src off %lld dst off %lld len %lld",
1320 src_off, dest_off, len);
1322 rc = smb2_set_file_size(xid, tcon, trgtfile, dest_off + len, false);
1324 goto duplicate_extents_out;
1326 rc = SMB2_ioctl(xid, tcon, trgtfile->fid.persistent_fid,
1327 trgtfile->fid.volatile_fid,
1328 FSCTL_DUPLICATE_EXTENTS_TO_FILE,
1329 true /* is_fsctl */,
1330 (char *)&dup_ext_buf,
1331 sizeof(struct duplicate_extents_to_file),
1335 if (ret_data_len > 0)
1336 cifs_dbg(FYI, "non-zero response length in duplicate extents");
1338 duplicate_extents_out:
1343 smb2_set_compression(const unsigned int xid, struct cifs_tcon *tcon,
1344 struct cifsFileInfo *cfile)
1346 return SMB2_set_compression(xid, tcon, cfile->fid.persistent_fid,
1347 cfile->fid.volatile_fid);
1351 smb3_set_integrity(const unsigned int xid, struct cifs_tcon *tcon,
1352 struct cifsFileInfo *cfile)
1354 struct fsctl_set_integrity_information_req integr_info;
1355 unsigned int ret_data_len;
1357 integr_info.ChecksumAlgorithm = cpu_to_le16(CHECKSUM_TYPE_UNCHANGED);
1358 integr_info.Flags = 0;
1359 integr_info.Reserved = 0;
1361 return SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
1362 cfile->fid.volatile_fid,
1363 FSCTL_SET_INTEGRITY_INFORMATION,
1364 true /* is_fsctl */,
1365 (char *)&integr_info,
1366 sizeof(struct fsctl_set_integrity_information_req),
1372 /* GMT Token is @GMT-YYYY.MM.DD-HH.MM.SS Unicode which is 48 bytes + null */
1373 #define GMT_TOKEN_SIZE 50
1376 * Input buffer contains (empty) struct smb_snapshot array with size filled in
1377 * For output see struct SRV_SNAPSHOT_ARRAY in MS-SMB2 section 2.2.32.2
1380 smb3_enum_snapshots(const unsigned int xid, struct cifs_tcon *tcon,
1381 struct cifsFileInfo *cfile, void __user *ioc_buf)
1383 char *retbuf = NULL;
1384 unsigned int ret_data_len = 0;
1386 struct smb_snapshot_array snapshot_in;
1388 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
1389 cfile->fid.volatile_fid,
1390 FSCTL_SRV_ENUMERATE_SNAPSHOTS,
1391 true /* is_fsctl */,
1392 NULL, 0 /* no input data */,
1395 cifs_dbg(FYI, "enum snaphots ioctl returned %d and ret buflen is %d\n",
1400 if (ret_data_len && (ioc_buf != NULL) && (retbuf != NULL)) {
1402 if (copy_from_user(&snapshot_in, ioc_buf,
1403 sizeof(struct smb_snapshot_array))) {
1410 * Check for min size, ie not large enough to fit even one GMT
1411 * token (snapshot). On the first ioctl some users may pass in
1412 * smaller size (or zero) to simply get the size of the array
1413 * so the user space caller can allocate sufficient memory
1414 * and retry the ioctl again with larger array size sufficient
1415 * to hold all of the snapshot GMT tokens on the second try.
1417 if (snapshot_in.snapshot_array_size < GMT_TOKEN_SIZE)
1418 ret_data_len = sizeof(struct smb_snapshot_array);
1421 * We return struct SRV_SNAPSHOT_ARRAY, followed by
1422 * the snapshot array (of 50 byte GMT tokens) each
1423 * representing an available previous version of the data
1425 if (ret_data_len > (snapshot_in.snapshot_array_size +
1426 sizeof(struct smb_snapshot_array)))
1427 ret_data_len = snapshot_in.snapshot_array_size +
1428 sizeof(struct smb_snapshot_array);
1430 if (copy_to_user(ioc_buf, retbuf, ret_data_len))
1439 smb2_query_dir_first(const unsigned int xid, struct cifs_tcon *tcon,
1440 const char *path, struct cifs_sb_info *cifs_sb,
1441 struct cifs_fid *fid, __u16 search_flags,
1442 struct cifs_search_info *srch_inf)
1446 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
1447 struct cifs_open_parms oparms;
1449 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
1454 oparms.desired_access = FILE_READ_ATTRIBUTES | FILE_READ_DATA;
1455 oparms.disposition = FILE_OPEN;
1456 oparms.create_options = 0;
1458 oparms.reconnect = false;
1460 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL, NULL);
1463 cifs_dbg(FYI, "open dir failed rc=%d\n", rc);
1467 srch_inf->entries_in_buffer = 0;
1468 srch_inf->index_of_last_entry = 0;
1470 rc = SMB2_query_directory(xid, tcon, fid->persistent_fid,
1471 fid->volatile_fid, 0, srch_inf);
1473 cifs_dbg(FYI, "query directory failed rc=%d\n", rc);
1474 SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
1480 smb2_query_dir_next(const unsigned int xid, struct cifs_tcon *tcon,
1481 struct cifs_fid *fid, __u16 search_flags,
1482 struct cifs_search_info *srch_inf)
1484 return SMB2_query_directory(xid, tcon, fid->persistent_fid,
1485 fid->volatile_fid, 0, srch_inf);
1489 smb2_close_dir(const unsigned int xid, struct cifs_tcon *tcon,
1490 struct cifs_fid *fid)
1492 return SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
1496 * If we negotiate SMB2 protocol and get STATUS_PENDING - update
1497 * the number of credits and return true. Otherwise - return false.
1500 smb2_is_status_pending(char *buf, struct TCP_Server_Info *server, int length)
1502 struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)buf;
1504 if (shdr->Status != STATUS_PENDING)
1508 spin_lock(&server->req_lock);
1509 server->credits += le16_to_cpu(shdr->CreditRequest);
1510 spin_unlock(&server->req_lock);
1511 wake_up(&server->request_q);
1518 smb2_is_session_expired(char *buf)
1520 struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)buf;
1522 if (shdr->Status != STATUS_NETWORK_SESSION_EXPIRED &&
1523 shdr->Status != STATUS_USER_SESSION_DELETED)
1526 trace_smb3_ses_expired(shdr->TreeId, shdr->SessionId,
1527 le16_to_cpu(shdr->Command),
1528 le64_to_cpu(shdr->MessageId));
1529 cifs_dbg(FYI, "Session expired or deleted\n");
1535 smb2_oplock_response(struct cifs_tcon *tcon, struct cifs_fid *fid,
1536 struct cifsInodeInfo *cinode)
1538 if (tcon->ses->server->capabilities & SMB2_GLOBAL_CAP_LEASING)
1539 return SMB2_lease_break(0, tcon, cinode->lease_key,
1540 smb2_get_lease_state(cinode));
1542 return SMB2_oplock_break(0, tcon, fid->persistent_fid,
1544 CIFS_CACHE_READ(cinode) ? 1 : 0);
1548 smb2_set_related(struct smb_rqst *rqst)
1550 struct smb2_sync_hdr *shdr;
1552 shdr = (struct smb2_sync_hdr *)(rqst->rq_iov[0].iov_base);
1553 shdr->Flags |= SMB2_FLAGS_RELATED_OPERATIONS;
1556 char smb2_padding[7] = {0, 0, 0, 0, 0, 0, 0};
1559 smb2_set_next_command(struct TCP_Server_Info *server, struct smb_rqst *rqst)
1561 struct smb2_sync_hdr *shdr;
1562 unsigned long len = smb_rqst_len(server, rqst);
1564 /* SMB headers in a compound are 8 byte aligned. */
1566 rqst->rq_iov[rqst->rq_nvec].iov_base = smb2_padding;
1567 rqst->rq_iov[rqst->rq_nvec].iov_len = 8 - (len & 7);
1569 len = smb_rqst_len(server, rqst);
1572 shdr = (struct smb2_sync_hdr *)(rqst->rq_iov[0].iov_base);
1573 shdr->NextCommand = cpu_to_le32(len);
1577 smb2_queryfs(const unsigned int xid, struct cifs_tcon *tcon,
1578 struct kstatfs *buf)
1580 struct smb2_query_info_rsp *rsp;
1581 struct smb2_fs_full_size_info *info = NULL;
1582 struct smb_rqst rqst[3];
1583 int resp_buftype[3];
1584 struct kvec rsp_iov[3];
1585 struct kvec open_iov[5]; /* 4 + potential padding. */
1586 struct kvec qi_iov[1];
1587 struct kvec close_iov[1];
1588 struct cifs_ses *ses = tcon->ses;
1589 struct TCP_Server_Info *server = ses->server;
1590 __le16 srch_path = 0; /* Null - open root of share */
1591 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
1592 struct cifs_open_parms oparms;
1593 struct cifs_fid fid;
1597 if (smb3_encryption_required(tcon))
1598 flags |= CIFS_TRANSFORM_REQ;
1600 memset(rqst, 0, sizeof(rqst));
1601 memset(resp_buftype, 0, sizeof(resp_buftype));
1602 memset(rsp_iov, 0, sizeof(rsp_iov));
1604 memset(&open_iov, 0, sizeof(open_iov));
1605 rqst[0].rq_iov = open_iov;
1606 rqst[0].rq_nvec = 4;
1609 oparms.desired_access = FILE_READ_ATTRIBUTES;
1610 oparms.disposition = FILE_OPEN;
1611 oparms.create_options = 0;
1613 oparms.reconnect = false;
1615 rc = SMB2_open_init(tcon, &rqst[0], &oplock, &oparms, &srch_path);
1618 smb2_set_next_command(server, &rqst[0]);
1620 memset(&qi_iov, 0, sizeof(qi_iov));
1621 rqst[1].rq_iov = qi_iov;
1622 rqst[1].rq_nvec = 1;
1624 rc = SMB2_query_info_init(tcon, &rqst[1], COMPOUND_FID, COMPOUND_FID,
1625 FS_FULL_SIZE_INFORMATION,
1626 SMB2_O_INFO_FILESYSTEM, 0,
1627 sizeof(struct smb2_fs_full_size_info));
1630 smb2_set_next_command(server, &rqst[1]);
1631 smb2_set_related(&rqst[1]);
1633 memset(&close_iov, 0, sizeof(close_iov));
1634 rqst[2].rq_iov = close_iov;
1635 rqst[2].rq_nvec = 1;
1637 rc = SMB2_close_init(tcon, &rqst[2], COMPOUND_FID, COMPOUND_FID);
1640 smb2_set_related(&rqst[2]);
1642 rc = compound_send_recv(xid, ses, flags, 3, rqst,
1643 resp_buftype, rsp_iov);
1647 rsp = (struct smb2_query_info_rsp *)rsp_iov[1].iov_base;
1648 buf->f_type = SMB2_MAGIC_NUMBER;
1649 info = (struct smb2_fs_full_size_info *)(
1650 le16_to_cpu(rsp->OutputBufferOffset) + (char *)rsp);
1651 rc = smb2_validate_iov(le16_to_cpu(rsp->OutputBufferOffset),
1652 le32_to_cpu(rsp->OutputBufferLength),
1654 sizeof(struct smb2_fs_full_size_info));
1656 smb2_copy_fs_info_to_kstatfs(info, buf);
1659 SMB2_open_free(&rqst[0]);
1660 SMB2_query_info_free(&rqst[1]);
1661 SMB2_close_free(&rqst[2]);
1662 free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base);
1663 free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base);
1664 free_rsp_buf(resp_buftype[2], rsp_iov[2].iov_base);
1669 smb311_queryfs(const unsigned int xid, struct cifs_tcon *tcon,
1670 struct kstatfs *buf)
1673 __le16 srch_path = 0; /* Null - open root of share */
1674 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
1675 struct cifs_open_parms oparms;
1676 struct cifs_fid fid;
1678 if (!tcon->posix_extensions)
1679 return smb2_queryfs(xid, tcon, buf);
1682 oparms.desired_access = FILE_READ_ATTRIBUTES;
1683 oparms.disposition = FILE_OPEN;
1684 oparms.create_options = 0;
1686 oparms.reconnect = false;
1688 rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL, NULL);
1692 rc = SMB311_posix_qfs_info(xid, tcon, fid.persistent_fid,
1693 fid.volatile_fid, buf);
1694 buf->f_type = SMB2_MAGIC_NUMBER;
1695 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
1700 smb2_compare_fids(struct cifsFileInfo *ob1, struct cifsFileInfo *ob2)
1702 return ob1->fid.persistent_fid == ob2->fid.persistent_fid &&
1703 ob1->fid.volatile_fid == ob2->fid.volatile_fid;
1707 smb2_mand_lock(const unsigned int xid, struct cifsFileInfo *cfile, __u64 offset,
1708 __u64 length, __u32 type, int lock, int unlock, bool wait)
1710 if (unlock && !lock)
1711 type = SMB2_LOCKFLAG_UNLOCK;
1712 return SMB2_lock(xid, tlink_tcon(cfile->tlink),
1713 cfile->fid.persistent_fid, cfile->fid.volatile_fid,
1714 current->tgid, length, offset, type, wait);
1718 smb2_get_lease_key(struct inode *inode, struct cifs_fid *fid)
1720 memcpy(fid->lease_key, CIFS_I(inode)->lease_key, SMB2_LEASE_KEY_SIZE);
1724 smb2_set_lease_key(struct inode *inode, struct cifs_fid *fid)
1726 memcpy(CIFS_I(inode)->lease_key, fid->lease_key, SMB2_LEASE_KEY_SIZE);
1730 smb2_new_lease_key(struct cifs_fid *fid)
1732 generate_random_uuid(fid->lease_key);
1736 smb2_get_dfs_refer(const unsigned int xid, struct cifs_ses *ses,
1737 const char *search_name,
1738 struct dfs_info3_param **target_nodes,
1739 unsigned int *num_of_nodes,
1740 const struct nls_table *nls_codepage, int remap)
1743 __le16 *utf16_path = NULL;
1744 int utf16_path_len = 0;
1745 struct cifs_tcon *tcon;
1746 struct fsctl_get_dfs_referral_req *dfs_req = NULL;
1747 struct get_dfs_referral_rsp *dfs_rsp = NULL;
1748 u32 dfs_req_size = 0, dfs_rsp_size = 0;
1750 cifs_dbg(FYI, "smb2_get_dfs_refer path <%s>\n", search_name);
1753 * Try to use the IPC tcon, otherwise just use any
1755 tcon = ses->tcon_ipc;
1757 spin_lock(&cifs_tcp_ses_lock);
1758 tcon = list_first_entry_or_null(&ses->tcon_list,
1763 spin_unlock(&cifs_tcp_ses_lock);
1767 cifs_dbg(VFS, "session %p has no tcon available for a dfs referral request\n",
1773 utf16_path = cifs_strndup_to_utf16(search_name, PATH_MAX,
1775 nls_codepage, remap);
1781 dfs_req_size = sizeof(*dfs_req) + utf16_path_len;
1782 dfs_req = kzalloc(dfs_req_size, GFP_KERNEL);
1788 /* Highest DFS referral version understood */
1789 dfs_req->MaxReferralLevel = DFS_VERSION;
1791 /* Path to resolve in an UTF-16 null-terminated string */
1792 memcpy(dfs_req->RequestFileName, utf16_path, utf16_path_len);
1795 rc = SMB2_ioctl(xid, tcon, NO_FILE_ID, NO_FILE_ID,
1796 FSCTL_DFS_GET_REFERRALS,
1797 true /* is_fsctl */,
1798 (char *)dfs_req, dfs_req_size,
1799 (char **)&dfs_rsp, &dfs_rsp_size);
1800 } while (rc == -EAGAIN);
1803 if ((rc != -ENOENT) && (rc != -EOPNOTSUPP))
1804 cifs_dbg(VFS, "ioctl error in smb2_get_dfs_refer rc=%d\n", rc);
1808 rc = parse_dfs_referrals(dfs_rsp, dfs_rsp_size,
1809 num_of_nodes, target_nodes,
1810 nls_codepage, remap, search_name,
1811 true /* is_unicode */);
1813 cifs_dbg(VFS, "parse error in smb2_get_dfs_refer rc=%d\n", rc);
1818 if (tcon && !tcon->ipc) {
1819 /* ipc tcons are not refcounted */
1820 spin_lock(&cifs_tcp_ses_lock);
1822 spin_unlock(&cifs_tcp_ses_lock);
1829 #define SMB2_SYMLINK_STRUCT_SIZE \
1830 (sizeof(struct smb2_err_rsp) - 1 + sizeof(struct smb2_symlink_err_rsp))
1833 smb2_query_symlink(const unsigned int xid, struct cifs_tcon *tcon,
1834 const char *full_path, char **target_path,
1835 struct cifs_sb_info *cifs_sb)
1839 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
1840 struct cifs_open_parms oparms;
1841 struct cifs_fid fid;
1842 struct kvec err_iov = {NULL, 0};
1843 struct smb2_err_rsp *err_buf = NULL;
1845 struct smb2_symlink_err_rsp *symlink;
1846 unsigned int sub_len;
1847 unsigned int sub_offset;
1848 unsigned int print_len;
1849 unsigned int print_offset;
1851 cifs_dbg(FYI, "%s: path: %s\n", __func__, full_path);
1853 utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb);
1858 oparms.desired_access = FILE_READ_ATTRIBUTES;
1859 oparms.disposition = FILE_OPEN;
1860 oparms.create_options = 0;
1862 oparms.reconnect = false;
1864 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, &err_iov,
1866 if (!rc || !err_iov.iov_base) {
1871 err_buf = err_iov.iov_base;
1872 if (le32_to_cpu(err_buf->ByteCount) < sizeof(struct smb2_symlink_err_rsp) ||
1873 err_iov.iov_len < SMB2_SYMLINK_STRUCT_SIZE) {
1878 /* open must fail on symlink - reset rc */
1880 symlink = (struct smb2_symlink_err_rsp *)err_buf->ErrorData;
1881 sub_len = le16_to_cpu(symlink->SubstituteNameLength);
1882 sub_offset = le16_to_cpu(symlink->SubstituteNameOffset);
1883 print_len = le16_to_cpu(symlink->PrintNameLength);
1884 print_offset = le16_to_cpu(symlink->PrintNameOffset);
1886 if (err_iov.iov_len < SMB2_SYMLINK_STRUCT_SIZE + sub_offset + sub_len) {
1891 if (err_iov.iov_len <
1892 SMB2_SYMLINK_STRUCT_SIZE + print_offset + print_len) {
1897 *target_path = cifs_strndup_from_utf16(
1898 (char *)symlink->PathBuffer + sub_offset,
1899 sub_len, true, cifs_sb->local_nls);
1900 if (!(*target_path)) {
1904 convert_delimiter(*target_path, '/');
1905 cifs_dbg(FYI, "%s: target path: %s\n", __func__, *target_path);
1908 free_rsp_buf(resp_buftype, err_buf);
1914 #ifdef CONFIG_CIFS_ACL
1915 static struct cifs_ntsd *
1916 get_smb2_acl_by_fid(struct cifs_sb_info *cifs_sb,
1917 const struct cifs_fid *cifsfid, u32 *pacllen)
1919 struct cifs_ntsd *pntsd = NULL;
1921 int rc = -EOPNOTSUPP;
1922 struct tcon_link *tlink = cifs_sb_tlink(cifs_sb);
1925 return ERR_CAST(tlink);
1928 cifs_dbg(FYI, "trying to get acl\n");
1930 rc = SMB2_query_acl(xid, tlink_tcon(tlink), cifsfid->persistent_fid,
1931 cifsfid->volatile_fid, (void **)&pntsd, pacllen);
1934 cifs_put_tlink(tlink);
1936 cifs_dbg(FYI, "%s: rc = %d ACL len %d\n", __func__, rc, *pacllen);
1943 static struct cifs_ntsd *
1944 get_smb2_acl_by_path(struct cifs_sb_info *cifs_sb,
1945 const char *path, u32 *pacllen)
1947 struct cifs_ntsd *pntsd = NULL;
1948 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
1951 struct cifs_tcon *tcon;
1952 struct tcon_link *tlink = cifs_sb_tlink(cifs_sb);
1953 struct cifs_fid fid;
1954 struct cifs_open_parms oparms;
1957 cifs_dbg(FYI, "get smb3 acl for path %s\n", path);
1959 return ERR_CAST(tlink);
1961 tcon = tlink_tcon(tlink);
1964 if (backup_cred(cifs_sb))
1965 oparms.create_options = CREATE_OPEN_BACKUP_INTENT;
1967 oparms.create_options = 0;
1969 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
1977 oparms.desired_access = READ_CONTROL;
1978 oparms.disposition = FILE_OPEN;
1980 oparms.reconnect = false;
1982 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL, NULL);
1985 rc = SMB2_query_acl(xid, tlink_tcon(tlink), fid.persistent_fid,
1986 fid.volatile_fid, (void **)&pntsd, pacllen);
1987 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
1990 cifs_put_tlink(tlink);
1993 cifs_dbg(FYI, "%s: rc = %d ACL len %d\n", __func__, rc, *pacllen);
1999 #ifdef CONFIG_CIFS_ACL
2001 set_smb2_acl(struct cifs_ntsd *pnntsd, __u32 acllen,
2002 struct inode *inode, const char *path, int aclflag)
2004 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
2006 int rc, access_flags = 0;
2007 struct cifs_tcon *tcon;
2008 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
2009 struct tcon_link *tlink = cifs_sb_tlink(cifs_sb);
2010 struct cifs_fid fid;
2011 struct cifs_open_parms oparms;
2014 cifs_dbg(FYI, "set smb3 acl for path %s\n", path);
2016 return PTR_ERR(tlink);
2018 tcon = tlink_tcon(tlink);
2021 if (backup_cred(cifs_sb))
2022 oparms.create_options = CREATE_OPEN_BACKUP_INTENT;
2024 oparms.create_options = 0;
2026 if (aclflag == CIFS_ACL_OWNER || aclflag == CIFS_ACL_GROUP)
2027 access_flags = WRITE_OWNER;
2029 access_flags = WRITE_DAC;
2031 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
2039 oparms.desired_access = access_flags;
2040 oparms.disposition = FILE_OPEN;
2043 oparms.reconnect = false;
2045 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL, NULL);
2048 rc = SMB2_set_acl(xid, tlink_tcon(tlink), fid.persistent_fid,
2049 fid.volatile_fid, pnntsd, acllen, aclflag);
2050 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
2053 cifs_put_tlink(tlink);
2057 #endif /* CIFS_ACL */
2059 /* Retrieve an ACL from the server */
2060 static struct cifs_ntsd *
2061 get_smb2_acl(struct cifs_sb_info *cifs_sb,
2062 struct inode *inode, const char *path,
2065 struct cifs_ntsd *pntsd = NULL;
2066 struct cifsFileInfo *open_file = NULL;
2069 open_file = find_readable_file(CIFS_I(inode), true);
2071 return get_smb2_acl_by_path(cifs_sb, path, pacllen);
2073 pntsd = get_smb2_acl_by_fid(cifs_sb, &open_file->fid, pacllen);
2074 cifsFileInfo_put(open_file);
2079 static long smb3_zero_range(struct file *file, struct cifs_tcon *tcon,
2080 loff_t offset, loff_t len, bool keep_size)
2082 struct inode *inode;
2083 struct cifsInodeInfo *cifsi;
2084 struct cifsFileInfo *cfile = file->private_data;
2085 struct file_zero_data_information fsctl_buf;
2091 inode = d_inode(cfile->dentry);
2092 cifsi = CIFS_I(inode);
2094 /* if file not oplocked can't be sure whether asking to extend size */
2095 if (!CIFS_CACHE_READ(cifsi))
2096 if (keep_size == false) {
2103 * Must check if file sparse since fallocate -z (zero range) assumes
2104 * non-sparse allocation
2106 if (!(cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE)) {
2113 * need to make sure we are not asked to extend the file since the SMB3
2114 * fsctl does not change the file size. In the future we could change
2115 * this to zero the first part of the range then set the file size
2116 * which for a non sparse file would zero the newly extended range
2118 if (keep_size == false)
2119 if (i_size_read(inode) < offset + len) {
2125 cifs_dbg(FYI, "offset %lld len %lld", offset, len);
2127 fsctl_buf.FileOffset = cpu_to_le64(offset);
2128 fsctl_buf.BeyondFinalZero = cpu_to_le64(offset + len);
2130 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
2131 cfile->fid.volatile_fid, FSCTL_SET_ZERO_DATA,
2132 true /* is_fctl */, (char *)&fsctl_buf,
2133 sizeof(struct file_zero_data_information), NULL, NULL);
2138 static long smb3_punch_hole(struct file *file, struct cifs_tcon *tcon,
2139 loff_t offset, loff_t len)
2141 struct inode *inode;
2142 struct cifsInodeInfo *cifsi;
2143 struct cifsFileInfo *cfile = file->private_data;
2144 struct file_zero_data_information fsctl_buf;
2147 __u8 set_sparse = 1;
2151 inode = d_inode(cfile->dentry);
2152 cifsi = CIFS_I(inode);
2154 /* Need to make file sparse, if not already, before freeing range. */
2155 /* Consider adding equivalent for compressed since it could also work */
2156 if (!smb2_set_sparse(xid, tcon, cfile, inode, set_sparse)) {
2162 cifs_dbg(FYI, "offset %lld len %lld", offset, len);
2164 fsctl_buf.FileOffset = cpu_to_le64(offset);
2165 fsctl_buf.BeyondFinalZero = cpu_to_le64(offset + len);
2167 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
2168 cfile->fid.volatile_fid, FSCTL_SET_ZERO_DATA,
2169 true /* is_fctl */, (char *)&fsctl_buf,
2170 sizeof(struct file_zero_data_information), NULL, NULL);
2175 static long smb3_simple_falloc(struct file *file, struct cifs_tcon *tcon,
2176 loff_t off, loff_t len, bool keep_size)
2178 struct inode *inode;
2179 struct cifsInodeInfo *cifsi;
2180 struct cifsFileInfo *cfile = file->private_data;
2181 long rc = -EOPNOTSUPP;
2186 inode = d_inode(cfile->dentry);
2187 cifsi = CIFS_I(inode);
2189 /* if file not oplocked can't be sure whether asking to extend size */
2190 if (!CIFS_CACHE_READ(cifsi))
2191 if (keep_size == false) {
2197 * Files are non-sparse by default so falloc may be a no-op
2198 * Must check if file sparse. If not sparse, and not extending
2199 * then no need to do anything since file already allocated
2201 if ((cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) == 0) {
2202 if (keep_size == true)
2204 /* check if extending file */
2205 else if (i_size_read(inode) >= off + len)
2206 /* not extending file and already not sparse */
2208 /* BB: in future add else clause to extend file */
2215 if ((keep_size == true) || (i_size_read(inode) >= off + len)) {
2217 * Check if falloc starts within first few pages of file
2218 * and ends within a few pages of the end of file to
2219 * ensure that most of file is being forced to be
2220 * fallocated now. If so then setting whole file sparse
2221 * ie potentially making a few extra pages at the beginning
2222 * or end of the file non-sparse via set_sparse is harmless.
2224 if ((off > 8192) || (off + len + 8192 < i_size_read(inode))) {
2230 rc = smb2_set_sparse(xid, tcon, cfile, inode, false);
2232 /* BB: else ... in future add code to extend file and set sparse */
2240 static long smb3_fallocate(struct file *file, struct cifs_tcon *tcon, int mode,
2241 loff_t off, loff_t len)
2243 /* KEEP_SIZE already checked for by do_fallocate */
2244 if (mode & FALLOC_FL_PUNCH_HOLE)
2245 return smb3_punch_hole(file, tcon, off, len);
2246 else if (mode & FALLOC_FL_ZERO_RANGE) {
2247 if (mode & FALLOC_FL_KEEP_SIZE)
2248 return smb3_zero_range(file, tcon, off, len, true);
2249 return smb3_zero_range(file, tcon, off, len, false);
2250 } else if (mode == FALLOC_FL_KEEP_SIZE)
2251 return smb3_simple_falloc(file, tcon, off, len, true);
2253 return smb3_simple_falloc(file, tcon, off, len, false);
2259 smb2_downgrade_oplock(struct TCP_Server_Info *server,
2260 struct cifsInodeInfo *cinode, bool set_level2)
2263 server->ops->set_oplock_level(cinode, SMB2_OPLOCK_LEVEL_II,
2266 server->ops->set_oplock_level(cinode, 0, 0, NULL);
2270 smb2_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
2271 unsigned int epoch, bool *purge_cache)
2274 if (oplock == SMB2_OPLOCK_LEVEL_NOCHANGE)
2276 if (oplock == SMB2_OPLOCK_LEVEL_BATCH) {
2277 cinode->oplock = CIFS_CACHE_RHW_FLG;
2278 cifs_dbg(FYI, "Batch Oplock granted on inode %p\n",
2279 &cinode->vfs_inode);
2280 } else if (oplock == SMB2_OPLOCK_LEVEL_EXCLUSIVE) {
2281 cinode->oplock = CIFS_CACHE_RW_FLG;
2282 cifs_dbg(FYI, "Exclusive Oplock granted on inode %p\n",
2283 &cinode->vfs_inode);
2284 } else if (oplock == SMB2_OPLOCK_LEVEL_II) {
2285 cinode->oplock = CIFS_CACHE_READ_FLG;
2286 cifs_dbg(FYI, "Level II Oplock granted on inode %p\n",
2287 &cinode->vfs_inode);
2293 smb21_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
2294 unsigned int epoch, bool *purge_cache)
2296 char message[5] = {0};
2299 if (oplock == SMB2_OPLOCK_LEVEL_NOCHANGE)
2303 if (oplock & SMB2_LEASE_READ_CACHING_HE) {
2304 cinode->oplock |= CIFS_CACHE_READ_FLG;
2305 strcat(message, "R");
2307 if (oplock & SMB2_LEASE_HANDLE_CACHING_HE) {
2308 cinode->oplock |= CIFS_CACHE_HANDLE_FLG;
2309 strcat(message, "H");
2311 if (oplock & SMB2_LEASE_WRITE_CACHING_HE) {
2312 cinode->oplock |= CIFS_CACHE_WRITE_FLG;
2313 strcat(message, "W");
2315 if (!cinode->oplock)
2316 strcat(message, "None");
2317 cifs_dbg(FYI, "%s Lease granted on inode %p\n", message,
2318 &cinode->vfs_inode);
2322 smb3_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
2323 unsigned int epoch, bool *purge_cache)
2325 unsigned int old_oplock = cinode->oplock;
2327 smb21_set_oplock_level(cinode, oplock, epoch, purge_cache);
2330 *purge_cache = false;
2331 if (old_oplock == CIFS_CACHE_READ_FLG) {
2332 if (cinode->oplock == CIFS_CACHE_READ_FLG &&
2333 (epoch - cinode->epoch > 0))
2334 *purge_cache = true;
2335 else if (cinode->oplock == CIFS_CACHE_RH_FLG &&
2336 (epoch - cinode->epoch > 1))
2337 *purge_cache = true;
2338 else if (cinode->oplock == CIFS_CACHE_RHW_FLG &&
2339 (epoch - cinode->epoch > 1))
2340 *purge_cache = true;
2341 else if (cinode->oplock == 0 &&
2342 (epoch - cinode->epoch > 0))
2343 *purge_cache = true;
2344 } else if (old_oplock == CIFS_CACHE_RH_FLG) {
2345 if (cinode->oplock == CIFS_CACHE_RH_FLG &&
2346 (epoch - cinode->epoch > 0))
2347 *purge_cache = true;
2348 else if (cinode->oplock == CIFS_CACHE_RHW_FLG &&
2349 (epoch - cinode->epoch > 1))
2350 *purge_cache = true;
2352 cinode->epoch = epoch;
2357 smb2_is_read_op(__u32 oplock)
2359 return oplock == SMB2_OPLOCK_LEVEL_II;
2363 smb21_is_read_op(__u32 oplock)
2365 return (oplock & SMB2_LEASE_READ_CACHING_HE) &&
2366 !(oplock & SMB2_LEASE_WRITE_CACHING_HE);
2370 map_oplock_to_lease(u8 oplock)
2372 if (oplock == SMB2_OPLOCK_LEVEL_EXCLUSIVE)
2373 return SMB2_LEASE_WRITE_CACHING | SMB2_LEASE_READ_CACHING;
2374 else if (oplock == SMB2_OPLOCK_LEVEL_II)
2375 return SMB2_LEASE_READ_CACHING;
2376 else if (oplock == SMB2_OPLOCK_LEVEL_BATCH)
2377 return SMB2_LEASE_HANDLE_CACHING | SMB2_LEASE_READ_CACHING |
2378 SMB2_LEASE_WRITE_CACHING;
2383 smb2_create_lease_buf(u8 *lease_key, u8 oplock)
2385 struct create_lease *buf;
2387 buf = kzalloc(sizeof(struct create_lease), GFP_KERNEL);
2391 memcpy(&buf->lcontext.LeaseKey, lease_key, SMB2_LEASE_KEY_SIZE);
2392 buf->lcontext.LeaseState = map_oplock_to_lease(oplock);
2394 buf->ccontext.DataOffset = cpu_to_le16(offsetof
2395 (struct create_lease, lcontext));
2396 buf->ccontext.DataLength = cpu_to_le32(sizeof(struct lease_context));
2397 buf->ccontext.NameOffset = cpu_to_le16(offsetof
2398 (struct create_lease, Name));
2399 buf->ccontext.NameLength = cpu_to_le16(4);
2400 /* SMB2_CREATE_REQUEST_LEASE is "RqLs" */
2409 smb3_create_lease_buf(u8 *lease_key, u8 oplock)
2411 struct create_lease_v2 *buf;
2413 buf = kzalloc(sizeof(struct create_lease_v2), GFP_KERNEL);
2417 memcpy(&buf->lcontext.LeaseKey, lease_key, SMB2_LEASE_KEY_SIZE);
2418 buf->lcontext.LeaseState = map_oplock_to_lease(oplock);
2420 buf->ccontext.DataOffset = cpu_to_le16(offsetof
2421 (struct create_lease_v2, lcontext));
2422 buf->ccontext.DataLength = cpu_to_le32(sizeof(struct lease_context_v2));
2423 buf->ccontext.NameOffset = cpu_to_le16(offsetof
2424 (struct create_lease_v2, Name));
2425 buf->ccontext.NameLength = cpu_to_le16(4);
2426 /* SMB2_CREATE_REQUEST_LEASE is "RqLs" */
2435 smb2_parse_lease_buf(void *buf, unsigned int *epoch, char *lease_key)
2437 struct create_lease *lc = (struct create_lease *)buf;
2439 *epoch = 0; /* not used */
2440 if (lc->lcontext.LeaseFlags & SMB2_LEASE_FLAG_BREAK_IN_PROGRESS)
2441 return SMB2_OPLOCK_LEVEL_NOCHANGE;
2442 return le32_to_cpu(lc->lcontext.LeaseState);
2446 smb3_parse_lease_buf(void *buf, unsigned int *epoch, char *lease_key)
2448 struct create_lease_v2 *lc = (struct create_lease_v2 *)buf;
2450 *epoch = le16_to_cpu(lc->lcontext.Epoch);
2451 if (lc->lcontext.LeaseFlags & SMB2_LEASE_FLAG_BREAK_IN_PROGRESS)
2452 return SMB2_OPLOCK_LEVEL_NOCHANGE;
2454 memcpy(lease_key, &lc->lcontext.LeaseKey, SMB2_LEASE_KEY_SIZE);
2455 return le32_to_cpu(lc->lcontext.LeaseState);
2459 smb2_wp_retry_size(struct inode *inode)
2461 return min_t(unsigned int, CIFS_SB(inode->i_sb)->wsize,
2462 SMB2_MAX_BUFFER_SIZE);
2466 smb2_dir_needs_close(struct cifsFileInfo *cfile)
2468 return !cfile->invalidHandle;
2472 fill_transform_hdr(struct smb2_transform_hdr *tr_hdr, unsigned int orig_len,
2473 struct smb_rqst *old_rq)
2475 struct smb2_sync_hdr *shdr =
2476 (struct smb2_sync_hdr *)old_rq->rq_iov[0].iov_base;
2478 memset(tr_hdr, 0, sizeof(struct smb2_transform_hdr));
2479 tr_hdr->ProtocolId = SMB2_TRANSFORM_PROTO_NUM;
2480 tr_hdr->OriginalMessageSize = cpu_to_le32(orig_len);
2481 tr_hdr->Flags = cpu_to_le16(0x01);
2482 get_random_bytes(&tr_hdr->Nonce, SMB3_AES128CMM_NONCE);
2483 memcpy(&tr_hdr->SessionId, &shdr->SessionId, 8);
2486 /* We can not use the normal sg_set_buf() as we will sometimes pass a
2487 * stack object as buf.
2489 static inline void smb2_sg_set_buf(struct scatterlist *sg, const void *buf,
2490 unsigned int buflen)
2492 sg_set_page(sg, virt_to_page(buf), buflen, offset_in_page(buf));
2495 /* Assumes the first rqst has a transform header as the first iov.
2497 * rqst[0].rq_iov[0] is transform header
2498 * rqst[0].rq_iov[1+] data to be encrypted/decrypted
2499 * rqst[1+].rq_iov[0+] data to be encrypted/decrypted
2501 static struct scatterlist *
2502 init_sg(int num_rqst, struct smb_rqst *rqst, u8 *sign)
2504 unsigned int sg_len;
2505 struct scatterlist *sg;
2508 unsigned int idx = 0;
2512 for (i = 0; i < num_rqst; i++)
2513 sg_len += rqst[i].rq_nvec + rqst[i].rq_npages;
2515 sg = kmalloc_array(sg_len, sizeof(struct scatterlist), GFP_KERNEL);
2519 sg_init_table(sg, sg_len);
2520 for (i = 0; i < num_rqst; i++) {
2521 for (j = 0; j < rqst[i].rq_nvec; j++) {
2523 * The first rqst has a transform header where the
2524 * first 20 bytes are not part of the encrypted blob
2526 skip = (i == 0) && (j == 0) ? 20 : 0;
2527 smb2_sg_set_buf(&sg[idx++],
2528 rqst[i].rq_iov[j].iov_base + skip,
2529 rqst[i].rq_iov[j].iov_len - skip);
2532 for (j = 0; j < rqst[i].rq_npages; j++) {
2533 unsigned int len, offset;
2535 rqst_page_get_length(&rqst[i], j, &len, &offset);
2536 sg_set_page(&sg[idx++], rqst[i].rq_pages[j], len, offset);
2539 smb2_sg_set_buf(&sg[idx], sign, SMB2_SIGNATURE_SIZE);
2544 smb2_get_enc_key(struct TCP_Server_Info *server, __u64 ses_id, int enc, u8 *key)
2546 struct cifs_ses *ses;
2549 spin_lock(&cifs_tcp_ses_lock);
2550 list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) {
2551 if (ses->Suid != ses_id)
2553 ses_enc_key = enc ? ses->smb3encryptionkey :
2554 ses->smb3decryptionkey;
2555 memcpy(key, ses_enc_key, SMB3_SIGN_KEY_SIZE);
2556 spin_unlock(&cifs_tcp_ses_lock);
2559 spin_unlock(&cifs_tcp_ses_lock);
2564 * Encrypt or decrypt @rqst message. @rqst[0] has the following format:
2565 * iov[0] - transform header (associate data),
2566 * iov[1-N] - SMB2 header and pages - data to encrypt.
2567 * On success return encrypted data in iov[1-N] and pages, leave iov[0]
2571 crypt_message(struct TCP_Server_Info *server, int num_rqst,
2572 struct smb_rqst *rqst, int enc)
2574 struct smb2_transform_hdr *tr_hdr =
2575 (struct smb2_transform_hdr *)rqst[0].rq_iov[0].iov_base;
2576 unsigned int assoc_data_len = sizeof(struct smb2_transform_hdr) - 20;
2578 struct scatterlist *sg;
2579 u8 sign[SMB2_SIGNATURE_SIZE] = {};
2580 u8 key[SMB3_SIGN_KEY_SIZE];
2581 struct aead_request *req;
2583 unsigned int iv_len;
2584 DECLARE_CRYPTO_WAIT(wait);
2585 struct crypto_aead *tfm;
2586 unsigned int crypt_len = le32_to_cpu(tr_hdr->OriginalMessageSize);
2588 rc = smb2_get_enc_key(server, tr_hdr->SessionId, enc, key);
2590 cifs_dbg(VFS, "%s: Could not get %scryption key\n", __func__,
2595 rc = smb3_crypto_aead_allocate(server);
2597 cifs_dbg(VFS, "%s: crypto alloc failed\n", __func__);
2601 tfm = enc ? server->secmech.ccmaesencrypt :
2602 server->secmech.ccmaesdecrypt;
2603 rc = crypto_aead_setkey(tfm, key, SMB3_SIGN_KEY_SIZE);
2605 cifs_dbg(VFS, "%s: Failed to set aead key %d\n", __func__, rc);
2609 rc = crypto_aead_setauthsize(tfm, SMB2_SIGNATURE_SIZE);
2611 cifs_dbg(VFS, "%s: Failed to set authsize %d\n", __func__, rc);
2615 req = aead_request_alloc(tfm, GFP_KERNEL);
2617 cifs_dbg(VFS, "%s: Failed to alloc aead request", __func__);
2622 memcpy(sign, &tr_hdr->Signature, SMB2_SIGNATURE_SIZE);
2623 crypt_len += SMB2_SIGNATURE_SIZE;
2626 sg = init_sg(num_rqst, rqst, sign);
2628 cifs_dbg(VFS, "%s: Failed to init sg", __func__);
2633 iv_len = crypto_aead_ivsize(tfm);
2634 iv = kzalloc(iv_len, GFP_KERNEL);
2636 cifs_dbg(VFS, "%s: Failed to alloc IV", __func__);
2641 memcpy(iv + 1, (char *)tr_hdr->Nonce, SMB3_AES128CMM_NONCE);
2643 aead_request_set_crypt(req, sg, sg, crypt_len, iv);
2644 aead_request_set_ad(req, assoc_data_len);
2646 aead_request_set_callback(req, CRYPTO_TFM_REQ_MAY_BACKLOG,
2647 crypto_req_done, &wait);
2649 rc = crypto_wait_req(enc ? crypto_aead_encrypt(req)
2650 : crypto_aead_decrypt(req), &wait);
2653 memcpy(&tr_hdr->Signature, sign, SMB2_SIGNATURE_SIZE);
2664 smb3_free_compound_rqst(int num_rqst, struct smb_rqst *rqst)
2668 for (i = 0; i < num_rqst; i++) {
2669 if (rqst[i].rq_pages) {
2670 for (j = rqst[i].rq_npages - 1; j >= 0; j--)
2671 put_page(rqst[i].rq_pages[j]);
2672 kfree(rqst[i].rq_pages);
2678 * This function will initialize new_rq and encrypt the content.
2679 * The first entry, new_rq[0], only contains a single iov which contains
2680 * a smb2_transform_hdr and is pre-allocated by the caller.
2681 * This function then populates new_rq[1+] with the content from olq_rq[0+].
2683 * The end result is an array of smb_rqst structures where the first structure
2684 * only contains a single iov for the transform header which we then can pass
2685 * to crypt_message().
2687 * new_rq[0].rq_iov[0] : smb2_transform_hdr pre-allocated by the caller
2688 * new_rq[1+].rq_iov[*] == old_rq[0+].rq_iov[*] : SMB2/3 requests
2691 smb3_init_transform_rq(struct TCP_Server_Info *server, int num_rqst,
2692 struct smb_rqst *new_rq, struct smb_rqst *old_rq)
2694 struct page **pages;
2695 struct smb2_transform_hdr *tr_hdr = new_rq[0].rq_iov[0].iov_base;
2696 unsigned int npages;
2697 unsigned int orig_len = 0;
2701 for (i = 1; i < num_rqst; i++) {
2702 npages = old_rq[i - 1].rq_npages;
2703 pages = kmalloc_array(npages, sizeof(struct page *),
2708 new_rq[i].rq_pages = pages;
2709 new_rq[i].rq_npages = npages;
2710 new_rq[i].rq_offset = old_rq[i - 1].rq_offset;
2711 new_rq[i].rq_pagesz = old_rq[i - 1].rq_pagesz;
2712 new_rq[i].rq_tailsz = old_rq[i - 1].rq_tailsz;
2713 new_rq[i].rq_iov = old_rq[i - 1].rq_iov;
2714 new_rq[i].rq_nvec = old_rq[i - 1].rq_nvec;
2716 orig_len += smb_rqst_len(server, &old_rq[i - 1]);
2718 for (j = 0; j < npages; j++) {
2719 pages[j] = alloc_page(GFP_KERNEL|__GFP_HIGHMEM);
2724 /* copy pages form the old */
2725 for (j = 0; j < npages; j++) {
2727 unsigned int offset, len;
2729 rqst_page_get_length(&new_rq[i], j, &len, &offset);
2731 dst = (char *) kmap(new_rq[i].rq_pages[j]) + offset;
2732 src = (char *) kmap(old_rq[i - 1].rq_pages[j]) + offset;
2734 memcpy(dst, src, len);
2735 kunmap(new_rq[i].rq_pages[j]);
2736 kunmap(old_rq[i - 1].rq_pages[j]);
2740 /* fill the 1st iov with a transform header */
2741 fill_transform_hdr(tr_hdr, orig_len, old_rq);
2743 rc = crypt_message(server, num_rqst, new_rq, 1);
2744 cifs_dbg(FYI, "encrypt message returned %d", rc);
2751 smb3_free_compound_rqst(num_rqst - 1, &new_rq[1]);
2756 smb3_is_transform_hdr(void *buf)
2758 struct smb2_transform_hdr *trhdr = buf;
2760 return trhdr->ProtocolId == SMB2_TRANSFORM_PROTO_NUM;
2764 decrypt_raw_data(struct TCP_Server_Info *server, char *buf,
2765 unsigned int buf_data_size, struct page **pages,
2766 unsigned int npages, unsigned int page_data_size)
2769 struct smb_rqst rqst = {NULL};
2772 iov[0].iov_base = buf;
2773 iov[0].iov_len = sizeof(struct smb2_transform_hdr);
2774 iov[1].iov_base = buf + sizeof(struct smb2_transform_hdr);
2775 iov[1].iov_len = buf_data_size;
2779 rqst.rq_pages = pages;
2780 rqst.rq_npages = npages;
2781 rqst.rq_pagesz = PAGE_SIZE;
2782 rqst.rq_tailsz = (page_data_size % PAGE_SIZE) ? : PAGE_SIZE;
2784 rc = crypt_message(server, 1, &rqst, 0);
2785 cifs_dbg(FYI, "decrypt message returned %d\n", rc);
2790 memmove(buf, iov[1].iov_base, buf_data_size);
2792 server->total_read = buf_data_size + page_data_size;
2798 read_data_into_pages(struct TCP_Server_Info *server, struct page **pages,
2799 unsigned int npages, unsigned int len)
2804 for (i = 0; i < npages; i++) {
2805 struct page *page = pages[i];
2809 if (len >= PAGE_SIZE) {
2810 /* enough data to fill the page */
2814 zero_user(page, len, PAGE_SIZE - len);
2817 length = cifs_read_page_from_socket(server, page, 0, n);
2820 server->total_read += length;
2827 init_read_bvec(struct page **pages, unsigned int npages, unsigned int data_size,
2828 unsigned int cur_off, struct bio_vec **page_vec)
2830 struct bio_vec *bvec;
2833 bvec = kcalloc(npages, sizeof(struct bio_vec), GFP_KERNEL);
2837 for (i = 0; i < npages; i++) {
2838 bvec[i].bv_page = pages[i];
2839 bvec[i].bv_offset = (i == 0) ? cur_off : 0;
2840 bvec[i].bv_len = min_t(unsigned int, PAGE_SIZE, data_size);
2841 data_size -= bvec[i].bv_len;
2844 if (data_size != 0) {
2845 cifs_dbg(VFS, "%s: something went wrong\n", __func__);
2855 handle_read_data(struct TCP_Server_Info *server, struct mid_q_entry *mid,
2856 char *buf, unsigned int buf_len, struct page **pages,
2857 unsigned int npages, unsigned int page_data_size)
2859 unsigned int data_offset;
2860 unsigned int data_len;
2861 unsigned int cur_off;
2862 unsigned int cur_page_idx;
2863 unsigned int pad_len;
2864 struct cifs_readdata *rdata = mid->callback_data;
2865 struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)buf;
2866 struct bio_vec *bvec = NULL;
2867 struct iov_iter iter;
2870 bool use_rdma_mr = false;
2872 if (shdr->Command != SMB2_READ) {
2873 cifs_dbg(VFS, "only big read responses are supported\n");
2877 if (server->ops->is_session_expired &&
2878 server->ops->is_session_expired(buf)) {
2879 cifs_reconnect(server);
2880 wake_up(&server->response_q);
2884 if (server->ops->is_status_pending &&
2885 server->ops->is_status_pending(buf, server, 0))
2888 rdata->result = server->ops->map_error(buf, false);
2889 if (rdata->result != 0) {
2890 cifs_dbg(FYI, "%s: server returned error %d\n",
2891 __func__, rdata->result);
2892 dequeue_mid(mid, rdata->result);
2896 data_offset = server->ops->read_data_offset(buf);
2897 #ifdef CONFIG_CIFS_SMB_DIRECT
2898 use_rdma_mr = rdata->mr;
2900 data_len = server->ops->read_data_length(buf, use_rdma_mr);
2902 if (data_offset < server->vals->read_rsp_size) {
2904 * win2k8 sometimes sends an offset of 0 when the read
2905 * is beyond the EOF. Treat it as if the data starts just after
2908 cifs_dbg(FYI, "%s: data offset (%u) inside read response header\n",
2909 __func__, data_offset);
2910 data_offset = server->vals->read_rsp_size;
2911 } else if (data_offset > MAX_CIFS_SMALL_BUFFER_SIZE) {
2912 /* data_offset is beyond the end of smallbuf */
2913 cifs_dbg(FYI, "%s: data offset (%u) beyond end of smallbuf\n",
2914 __func__, data_offset);
2915 rdata->result = -EIO;
2916 dequeue_mid(mid, rdata->result);
2920 pad_len = data_offset - server->vals->read_rsp_size;
2922 if (buf_len <= data_offset) {
2923 /* read response payload is in pages */
2924 cur_page_idx = pad_len / PAGE_SIZE;
2925 cur_off = pad_len % PAGE_SIZE;
2927 if (cur_page_idx != 0) {
2928 /* data offset is beyond the 1st page of response */
2929 cifs_dbg(FYI, "%s: data offset (%u) beyond 1st page of response\n",
2930 __func__, data_offset);
2931 rdata->result = -EIO;
2932 dequeue_mid(mid, rdata->result);
2936 if (data_len > page_data_size - pad_len) {
2937 /* data_len is corrupt -- discard frame */
2938 rdata->result = -EIO;
2939 dequeue_mid(mid, rdata->result);
2943 rdata->result = init_read_bvec(pages, npages, page_data_size,
2945 if (rdata->result != 0) {
2946 dequeue_mid(mid, rdata->result);
2950 iov_iter_bvec(&iter, WRITE | ITER_BVEC, bvec, npages, data_len);
2951 } else if (buf_len >= data_offset + data_len) {
2952 /* read response payload is in buf */
2953 WARN_ONCE(npages > 0, "read data can be either in buf or in pages");
2954 iov.iov_base = buf + data_offset;
2955 iov.iov_len = data_len;
2956 iov_iter_kvec(&iter, WRITE | ITER_KVEC, &iov, 1, data_len);
2958 /* read response payload cannot be in both buf and pages */
2959 WARN_ONCE(1, "buf can not contain only a part of read data");
2960 rdata->result = -EIO;
2961 dequeue_mid(mid, rdata->result);
2965 /* set up first iov for signature check */
2966 rdata->iov[0].iov_base = buf;
2967 rdata->iov[0].iov_len = 4;
2968 rdata->iov[1].iov_base = buf + 4;
2969 rdata->iov[1].iov_len = server->vals->read_rsp_size - 4;
2970 cifs_dbg(FYI, "0: iov_base=%p iov_len=%zu\n",
2971 rdata->iov[0].iov_base, server->vals->read_rsp_size);
2973 length = rdata->copy_into_pages(server, rdata, &iter);
2980 dequeue_mid(mid, false);
2985 receive_encrypted_read(struct TCP_Server_Info *server, struct mid_q_entry **mid)
2987 char *buf = server->smallbuf;
2988 struct smb2_transform_hdr *tr_hdr = (struct smb2_transform_hdr *)buf;
2989 unsigned int npages;
2990 struct page **pages;
2992 unsigned int buflen = server->pdu_size;
2996 len = min_t(unsigned int, buflen, server->vals->read_rsp_size +
2997 sizeof(struct smb2_transform_hdr)) - HEADER_SIZE(server) + 1;
2999 rc = cifs_read_from_socket(server, buf + HEADER_SIZE(server) - 1, len);
3002 server->total_read += rc;
3004 len = le32_to_cpu(tr_hdr->OriginalMessageSize) -
3005 server->vals->read_rsp_size;
3006 npages = DIV_ROUND_UP(len, PAGE_SIZE);
3008 pages = kmalloc_array(npages, sizeof(struct page *), GFP_KERNEL);
3014 for (; i < npages; i++) {
3015 pages[i] = alloc_page(GFP_KERNEL|__GFP_HIGHMEM);
3022 /* read read data into pages */
3023 rc = read_data_into_pages(server, pages, npages, len);
3027 rc = cifs_discard_remaining_data(server);
3031 rc = decrypt_raw_data(server, buf, server->vals->read_rsp_size,
3032 pages, npages, len);
3036 *mid = smb2_find_mid(server, buf);
3038 cifs_dbg(FYI, "mid not found\n");
3040 cifs_dbg(FYI, "mid found\n");
3041 (*mid)->decrypted = true;
3042 rc = handle_read_data(server, *mid, buf,
3043 server->vals->read_rsp_size,
3044 pages, npages, len);
3048 for (i = i - 1; i >= 0; i--)
3053 cifs_discard_remaining_data(server);
3058 receive_encrypted_standard(struct TCP_Server_Info *server,
3059 struct mid_q_entry **mids, char **bufs,
3063 char *buf = server->smallbuf;
3065 struct smb2_sync_hdr *shdr;
3066 unsigned int pdu_length = server->pdu_size;
3067 unsigned int buf_size;
3068 struct mid_q_entry *mid_entry;
3070 char *next_buffer = NULL;
3074 /* switch to large buffer if too big for a small one */
3075 if (pdu_length > MAX_CIFS_SMALL_BUFFER_SIZE) {
3076 server->large_buf = true;
3077 memcpy(server->bigbuf, buf, server->total_read);
3078 buf = server->bigbuf;
3081 /* now read the rest */
3082 length = cifs_read_from_socket(server, buf + HEADER_SIZE(server) - 1,
3083 pdu_length - HEADER_SIZE(server) + 1);
3086 server->total_read += length;
3088 buf_size = pdu_length - sizeof(struct smb2_transform_hdr);
3089 length = decrypt_raw_data(server, buf, buf_size, NULL, 0, 0);
3093 next_is_large = server->large_buf;
3095 shdr = (struct smb2_sync_hdr *)buf;
3096 if (shdr->NextCommand) {
3097 if (next_is_large) {
3098 tmpbuf = server->bigbuf;
3099 next_buffer = (char *)cifs_buf_get();
3101 tmpbuf = server->smallbuf;
3102 next_buffer = (char *)cifs_small_buf_get();
3105 tmpbuf + le32_to_cpu(shdr->NextCommand),
3106 pdu_length - le32_to_cpu(shdr->NextCommand));
3109 mid_entry = smb2_find_mid(server, buf);
3110 if (mid_entry == NULL)
3111 cifs_dbg(FYI, "mid not found\n");
3113 cifs_dbg(FYI, "mid found\n");
3114 mid_entry->decrypted = true;
3115 mid_entry->resp_buf_size = server->pdu_size;
3118 if (*num_mids >= MAX_COMPOUND) {
3119 cifs_dbg(VFS, "too many PDUs in compound\n");
3122 bufs[*num_mids] = buf;
3123 mids[(*num_mids)++] = mid_entry;
3125 if (mid_entry && mid_entry->handle)
3126 ret = mid_entry->handle(server, mid_entry);
3128 ret = cifs_handle_standard(server, mid_entry);
3130 if (ret == 0 && shdr->NextCommand) {
3131 pdu_length -= le32_to_cpu(shdr->NextCommand);
3132 server->large_buf = next_is_large;
3134 server->bigbuf = next_buffer;
3136 server->smallbuf = next_buffer;
3138 buf += le32_to_cpu(shdr->NextCommand);
3146 smb3_receive_transform(struct TCP_Server_Info *server,
3147 struct mid_q_entry **mids, char **bufs, int *num_mids)
3149 char *buf = server->smallbuf;
3150 unsigned int pdu_length = server->pdu_size;
3151 struct smb2_transform_hdr *tr_hdr = (struct smb2_transform_hdr *)buf;
3152 unsigned int orig_len = le32_to_cpu(tr_hdr->OriginalMessageSize);
3154 if (pdu_length < sizeof(struct smb2_transform_hdr) +
3155 sizeof(struct smb2_sync_hdr)) {
3156 cifs_dbg(VFS, "Transform message is too small (%u)\n",
3158 cifs_reconnect(server);
3159 wake_up(&server->response_q);
3160 return -ECONNABORTED;
3163 if (pdu_length < orig_len + sizeof(struct smb2_transform_hdr)) {
3164 cifs_dbg(VFS, "Transform message is broken\n");
3165 cifs_reconnect(server);
3166 wake_up(&server->response_q);
3167 return -ECONNABORTED;
3170 /* TODO: add support for compounds containing READ. */
3171 if (pdu_length > CIFSMaxBufSize + MAX_HEADER_SIZE(server))
3172 return receive_encrypted_read(server, &mids[0]);
3174 return receive_encrypted_standard(server, mids, bufs, num_mids);
3178 smb3_handle_read_data(struct TCP_Server_Info *server, struct mid_q_entry *mid)
3180 char *buf = server->large_buf ? server->bigbuf : server->smallbuf;
3182 return handle_read_data(server, mid, buf, server->pdu_size,
3187 smb2_next_header(char *buf)
3189 struct smb2_sync_hdr *hdr = (struct smb2_sync_hdr *)buf;
3190 struct smb2_transform_hdr *t_hdr = (struct smb2_transform_hdr *)buf;
3192 if (hdr->ProtocolId == SMB2_TRANSFORM_PROTO_NUM)
3193 return sizeof(struct smb2_transform_hdr) +
3194 le32_to_cpu(t_hdr->OriginalMessageSize);
3196 return le32_to_cpu(hdr->NextCommand);
3199 struct smb_version_operations smb20_operations = {
3200 .compare_fids = smb2_compare_fids,
3201 .setup_request = smb2_setup_request,
3202 .setup_async_request = smb2_setup_async_request,
3203 .check_receive = smb2_check_receive,
3204 .add_credits = smb2_add_credits,
3205 .set_credits = smb2_set_credits,
3206 .get_credits_field = smb2_get_credits_field,
3207 .get_credits = smb2_get_credits,
3208 .wait_mtu_credits = cifs_wait_mtu_credits,
3209 .get_next_mid = smb2_get_next_mid,
3210 .read_data_offset = smb2_read_data_offset,
3211 .read_data_length = smb2_read_data_length,
3212 .map_error = map_smb2_to_linux_error,
3213 .find_mid = smb2_find_mid,
3214 .check_message = smb2_check_message,
3215 .dump_detail = smb2_dump_detail,
3216 .clear_stats = smb2_clear_stats,
3217 .print_stats = smb2_print_stats,
3218 .is_oplock_break = smb2_is_valid_oplock_break,
3219 .handle_cancelled_mid = smb2_handle_cancelled_mid,
3220 .downgrade_oplock = smb2_downgrade_oplock,
3221 .need_neg = smb2_need_neg,
3222 .negotiate = smb2_negotiate,
3223 .negotiate_wsize = smb2_negotiate_wsize,
3224 .negotiate_rsize = smb2_negotiate_rsize,
3225 .sess_setup = SMB2_sess_setup,
3226 .logoff = SMB2_logoff,
3227 .tree_connect = SMB2_tcon,
3228 .tree_disconnect = SMB2_tdis,
3229 .qfs_tcon = smb2_qfs_tcon,
3230 .is_path_accessible = smb2_is_path_accessible,
3231 .can_echo = smb2_can_echo,
3233 .query_path_info = smb2_query_path_info,
3234 .get_srv_inum = smb2_get_srv_inum,
3235 .query_file_info = smb2_query_file_info,
3236 .set_path_size = smb2_set_path_size,
3237 .set_file_size = smb2_set_file_size,
3238 .set_file_info = smb2_set_file_info,
3239 .set_compression = smb2_set_compression,
3240 .mkdir = smb2_mkdir,
3241 .mkdir_setinfo = smb2_mkdir_setinfo,
3242 .rmdir = smb2_rmdir,
3243 .unlink = smb2_unlink,
3244 .rename = smb2_rename_path,
3245 .create_hardlink = smb2_create_hardlink,
3246 .query_symlink = smb2_query_symlink,
3247 .query_mf_symlink = smb3_query_mf_symlink,
3248 .create_mf_symlink = smb3_create_mf_symlink,
3249 .open = smb2_open_file,
3250 .set_fid = smb2_set_fid,
3251 .close = smb2_close_file,
3252 .flush = smb2_flush_file,
3253 .async_readv = smb2_async_readv,
3254 .async_writev = smb2_async_writev,
3255 .sync_read = smb2_sync_read,
3256 .sync_write = smb2_sync_write,
3257 .query_dir_first = smb2_query_dir_first,
3258 .query_dir_next = smb2_query_dir_next,
3259 .close_dir = smb2_close_dir,
3260 .calc_smb_size = smb2_calc_size,
3261 .is_status_pending = smb2_is_status_pending,
3262 .is_session_expired = smb2_is_session_expired,
3263 .oplock_response = smb2_oplock_response,
3264 .queryfs = smb2_queryfs,
3265 .mand_lock = smb2_mand_lock,
3266 .mand_unlock_range = smb2_unlock_range,
3267 .push_mand_locks = smb2_push_mandatory_locks,
3268 .get_lease_key = smb2_get_lease_key,
3269 .set_lease_key = smb2_set_lease_key,
3270 .new_lease_key = smb2_new_lease_key,
3271 .calc_signature = smb2_calc_signature,
3272 .is_read_op = smb2_is_read_op,
3273 .set_oplock_level = smb2_set_oplock_level,
3274 .create_lease_buf = smb2_create_lease_buf,
3275 .parse_lease_buf = smb2_parse_lease_buf,
3276 .copychunk_range = smb2_copychunk_range,
3277 .wp_retry_size = smb2_wp_retry_size,
3278 .dir_needs_close = smb2_dir_needs_close,
3279 .get_dfs_refer = smb2_get_dfs_refer,
3280 .select_sectype = smb2_select_sectype,
3281 #ifdef CONFIG_CIFS_XATTR
3282 .query_all_EAs = smb2_query_eas,
3283 .set_EA = smb2_set_ea,
3284 #endif /* CIFS_XATTR */
3285 #ifdef CONFIG_CIFS_ACL
3286 .get_acl = get_smb2_acl,
3287 .get_acl_by_fid = get_smb2_acl_by_fid,
3288 .set_acl = set_smb2_acl,
3289 #endif /* CIFS_ACL */
3290 .next_header = smb2_next_header,
3293 struct smb_version_operations smb21_operations = {
3294 .compare_fids = smb2_compare_fids,
3295 .setup_request = smb2_setup_request,
3296 .setup_async_request = smb2_setup_async_request,
3297 .check_receive = smb2_check_receive,
3298 .add_credits = smb2_add_credits,
3299 .set_credits = smb2_set_credits,
3300 .get_credits_field = smb2_get_credits_field,
3301 .get_credits = smb2_get_credits,
3302 .wait_mtu_credits = smb2_wait_mtu_credits,
3303 .get_next_mid = smb2_get_next_mid,
3304 .read_data_offset = smb2_read_data_offset,
3305 .read_data_length = smb2_read_data_length,
3306 .map_error = map_smb2_to_linux_error,
3307 .find_mid = smb2_find_mid,
3308 .check_message = smb2_check_message,
3309 .dump_detail = smb2_dump_detail,
3310 .clear_stats = smb2_clear_stats,
3311 .print_stats = smb2_print_stats,
3312 .is_oplock_break = smb2_is_valid_oplock_break,
3313 .handle_cancelled_mid = smb2_handle_cancelled_mid,
3314 .downgrade_oplock = smb2_downgrade_oplock,
3315 .need_neg = smb2_need_neg,
3316 .negotiate = smb2_negotiate,
3317 .negotiate_wsize = smb2_negotiate_wsize,
3318 .negotiate_rsize = smb2_negotiate_rsize,
3319 .sess_setup = SMB2_sess_setup,
3320 .logoff = SMB2_logoff,
3321 .tree_connect = SMB2_tcon,
3322 .tree_disconnect = SMB2_tdis,
3323 .qfs_tcon = smb2_qfs_tcon,
3324 .is_path_accessible = smb2_is_path_accessible,
3325 .can_echo = smb2_can_echo,
3327 .query_path_info = smb2_query_path_info,
3328 .get_srv_inum = smb2_get_srv_inum,
3329 .query_file_info = smb2_query_file_info,
3330 .set_path_size = smb2_set_path_size,
3331 .set_file_size = smb2_set_file_size,
3332 .set_file_info = smb2_set_file_info,
3333 .set_compression = smb2_set_compression,
3334 .mkdir = smb2_mkdir,
3335 .mkdir_setinfo = smb2_mkdir_setinfo,
3336 .rmdir = smb2_rmdir,
3337 .unlink = smb2_unlink,
3338 .rename = smb2_rename_path,
3339 .create_hardlink = smb2_create_hardlink,
3340 .query_symlink = smb2_query_symlink,
3341 .query_mf_symlink = smb3_query_mf_symlink,
3342 .create_mf_symlink = smb3_create_mf_symlink,
3343 .open = smb2_open_file,
3344 .set_fid = smb2_set_fid,
3345 .close = smb2_close_file,
3346 .flush = smb2_flush_file,
3347 .async_readv = smb2_async_readv,
3348 .async_writev = smb2_async_writev,
3349 .sync_read = smb2_sync_read,
3350 .sync_write = smb2_sync_write,
3351 .query_dir_first = smb2_query_dir_first,
3352 .query_dir_next = smb2_query_dir_next,
3353 .close_dir = smb2_close_dir,
3354 .calc_smb_size = smb2_calc_size,
3355 .is_status_pending = smb2_is_status_pending,
3356 .is_session_expired = smb2_is_session_expired,
3357 .oplock_response = smb2_oplock_response,
3358 .queryfs = smb2_queryfs,
3359 .mand_lock = smb2_mand_lock,
3360 .mand_unlock_range = smb2_unlock_range,
3361 .push_mand_locks = smb2_push_mandatory_locks,
3362 .get_lease_key = smb2_get_lease_key,
3363 .set_lease_key = smb2_set_lease_key,
3364 .new_lease_key = smb2_new_lease_key,
3365 .calc_signature = smb2_calc_signature,
3366 .is_read_op = smb21_is_read_op,
3367 .set_oplock_level = smb21_set_oplock_level,
3368 .create_lease_buf = smb2_create_lease_buf,
3369 .parse_lease_buf = smb2_parse_lease_buf,
3370 .copychunk_range = smb2_copychunk_range,
3371 .wp_retry_size = smb2_wp_retry_size,
3372 .dir_needs_close = smb2_dir_needs_close,
3373 .enum_snapshots = smb3_enum_snapshots,
3374 .get_dfs_refer = smb2_get_dfs_refer,
3375 .select_sectype = smb2_select_sectype,
3376 #ifdef CONFIG_CIFS_XATTR
3377 .query_all_EAs = smb2_query_eas,
3378 .set_EA = smb2_set_ea,
3379 #endif /* CIFS_XATTR */
3380 #ifdef CONFIG_CIFS_ACL
3381 .get_acl = get_smb2_acl,
3382 .get_acl_by_fid = get_smb2_acl_by_fid,
3383 .set_acl = set_smb2_acl,
3384 #endif /* CIFS_ACL */
3385 .next_header = smb2_next_header,
3388 struct smb_version_operations smb30_operations = {
3389 .compare_fids = smb2_compare_fids,
3390 .setup_request = smb2_setup_request,
3391 .setup_async_request = smb2_setup_async_request,
3392 .check_receive = smb2_check_receive,
3393 .add_credits = smb2_add_credits,
3394 .set_credits = smb2_set_credits,
3395 .get_credits_field = smb2_get_credits_field,
3396 .get_credits = smb2_get_credits,
3397 .wait_mtu_credits = smb2_wait_mtu_credits,
3398 .get_next_mid = smb2_get_next_mid,
3399 .read_data_offset = smb2_read_data_offset,
3400 .read_data_length = smb2_read_data_length,
3401 .map_error = map_smb2_to_linux_error,
3402 .find_mid = smb2_find_mid,
3403 .check_message = smb2_check_message,
3404 .dump_detail = smb2_dump_detail,
3405 .clear_stats = smb2_clear_stats,
3406 .print_stats = smb2_print_stats,
3407 .dump_share_caps = smb2_dump_share_caps,
3408 .is_oplock_break = smb2_is_valid_oplock_break,
3409 .handle_cancelled_mid = smb2_handle_cancelled_mid,
3410 .downgrade_oplock = smb2_downgrade_oplock,
3411 .need_neg = smb2_need_neg,
3412 .negotiate = smb2_negotiate,
3413 .negotiate_wsize = smb2_negotiate_wsize,
3414 .negotiate_rsize = smb2_negotiate_rsize,
3415 .sess_setup = SMB2_sess_setup,
3416 .logoff = SMB2_logoff,
3417 .tree_connect = SMB2_tcon,
3418 .tree_disconnect = SMB2_tdis,
3419 .qfs_tcon = smb3_qfs_tcon,
3420 .is_path_accessible = smb2_is_path_accessible,
3421 .can_echo = smb2_can_echo,
3423 .query_path_info = smb2_query_path_info,
3424 .get_srv_inum = smb2_get_srv_inum,
3425 .query_file_info = smb2_query_file_info,
3426 .set_path_size = smb2_set_path_size,
3427 .set_file_size = smb2_set_file_size,
3428 .set_file_info = smb2_set_file_info,
3429 .set_compression = smb2_set_compression,
3430 .mkdir = smb2_mkdir,
3431 .mkdir_setinfo = smb2_mkdir_setinfo,
3432 .rmdir = smb2_rmdir,
3433 .unlink = smb2_unlink,
3434 .rename = smb2_rename_path,
3435 .create_hardlink = smb2_create_hardlink,
3436 .query_symlink = smb2_query_symlink,
3437 .query_mf_symlink = smb3_query_mf_symlink,
3438 .create_mf_symlink = smb3_create_mf_symlink,
3439 .open = smb2_open_file,
3440 .set_fid = smb2_set_fid,
3441 .close = smb2_close_file,
3442 .flush = smb2_flush_file,
3443 .async_readv = smb2_async_readv,
3444 .async_writev = smb2_async_writev,
3445 .sync_read = smb2_sync_read,
3446 .sync_write = smb2_sync_write,
3447 .query_dir_first = smb2_query_dir_first,
3448 .query_dir_next = smb2_query_dir_next,
3449 .close_dir = smb2_close_dir,
3450 .calc_smb_size = smb2_calc_size,
3451 .is_status_pending = smb2_is_status_pending,
3452 .is_session_expired = smb2_is_session_expired,
3453 .oplock_response = smb2_oplock_response,
3454 .queryfs = smb2_queryfs,
3455 .mand_lock = smb2_mand_lock,
3456 .mand_unlock_range = smb2_unlock_range,
3457 .push_mand_locks = smb2_push_mandatory_locks,
3458 .get_lease_key = smb2_get_lease_key,
3459 .set_lease_key = smb2_set_lease_key,
3460 .new_lease_key = smb2_new_lease_key,
3461 .generate_signingkey = generate_smb30signingkey,
3462 .calc_signature = smb3_calc_signature,
3463 .set_integrity = smb3_set_integrity,
3464 .is_read_op = smb21_is_read_op,
3465 .set_oplock_level = smb3_set_oplock_level,
3466 .create_lease_buf = smb3_create_lease_buf,
3467 .parse_lease_buf = smb3_parse_lease_buf,
3468 .copychunk_range = smb2_copychunk_range,
3469 .duplicate_extents = smb2_duplicate_extents,
3470 .validate_negotiate = smb3_validate_negotiate,
3471 .wp_retry_size = smb2_wp_retry_size,
3472 .dir_needs_close = smb2_dir_needs_close,
3473 .fallocate = smb3_fallocate,
3474 .enum_snapshots = smb3_enum_snapshots,
3475 .init_transform_rq = smb3_init_transform_rq,
3476 .is_transform_hdr = smb3_is_transform_hdr,
3477 .receive_transform = smb3_receive_transform,
3478 .get_dfs_refer = smb2_get_dfs_refer,
3479 .select_sectype = smb2_select_sectype,
3480 #ifdef CONFIG_CIFS_XATTR
3481 .query_all_EAs = smb2_query_eas,
3482 .set_EA = smb2_set_ea,
3483 #endif /* CIFS_XATTR */
3484 #ifdef CONFIG_CIFS_ACL
3485 .get_acl = get_smb2_acl,
3486 .get_acl_by_fid = get_smb2_acl_by_fid,
3487 .set_acl = set_smb2_acl,
3488 #endif /* CIFS_ACL */
3489 .next_header = smb2_next_header,
3492 struct smb_version_operations smb311_operations = {
3493 .compare_fids = smb2_compare_fids,
3494 .setup_request = smb2_setup_request,
3495 .setup_async_request = smb2_setup_async_request,
3496 .check_receive = smb2_check_receive,
3497 .add_credits = smb2_add_credits,
3498 .set_credits = smb2_set_credits,
3499 .get_credits_field = smb2_get_credits_field,
3500 .get_credits = smb2_get_credits,
3501 .wait_mtu_credits = smb2_wait_mtu_credits,
3502 .get_next_mid = smb2_get_next_mid,
3503 .read_data_offset = smb2_read_data_offset,
3504 .read_data_length = smb2_read_data_length,
3505 .map_error = map_smb2_to_linux_error,
3506 .find_mid = smb2_find_mid,
3507 .check_message = smb2_check_message,
3508 .dump_detail = smb2_dump_detail,
3509 .clear_stats = smb2_clear_stats,
3510 .print_stats = smb2_print_stats,
3511 .dump_share_caps = smb2_dump_share_caps,
3512 .is_oplock_break = smb2_is_valid_oplock_break,
3513 .handle_cancelled_mid = smb2_handle_cancelled_mid,
3514 .downgrade_oplock = smb2_downgrade_oplock,
3515 .need_neg = smb2_need_neg,
3516 .negotiate = smb2_negotiate,
3517 .negotiate_wsize = smb2_negotiate_wsize,
3518 .negotiate_rsize = smb2_negotiate_rsize,
3519 .sess_setup = SMB2_sess_setup,
3520 .logoff = SMB2_logoff,
3521 .tree_connect = SMB2_tcon,
3522 .tree_disconnect = SMB2_tdis,
3523 .qfs_tcon = smb3_qfs_tcon,
3524 .is_path_accessible = smb2_is_path_accessible,
3525 .can_echo = smb2_can_echo,
3527 .query_path_info = smb2_query_path_info,
3528 .get_srv_inum = smb2_get_srv_inum,
3529 .query_file_info = smb2_query_file_info,
3530 .set_path_size = smb2_set_path_size,
3531 .set_file_size = smb2_set_file_size,
3532 .set_file_info = smb2_set_file_info,
3533 .set_compression = smb2_set_compression,
3534 .mkdir = smb2_mkdir,
3535 .mkdir_setinfo = smb2_mkdir_setinfo,
3536 .posix_mkdir = smb311_posix_mkdir,
3537 .rmdir = smb2_rmdir,
3538 .unlink = smb2_unlink,
3539 .rename = smb2_rename_path,
3540 .create_hardlink = smb2_create_hardlink,
3541 .query_symlink = smb2_query_symlink,
3542 .query_mf_symlink = smb3_query_mf_symlink,
3543 .create_mf_symlink = smb3_create_mf_symlink,
3544 .open = smb2_open_file,
3545 .set_fid = smb2_set_fid,
3546 .close = smb2_close_file,
3547 .flush = smb2_flush_file,
3548 .async_readv = smb2_async_readv,
3549 .async_writev = smb2_async_writev,
3550 .sync_read = smb2_sync_read,
3551 .sync_write = smb2_sync_write,
3552 .query_dir_first = smb2_query_dir_first,
3553 .query_dir_next = smb2_query_dir_next,
3554 .close_dir = smb2_close_dir,
3555 .calc_smb_size = smb2_calc_size,
3556 .is_status_pending = smb2_is_status_pending,
3557 .is_session_expired = smb2_is_session_expired,
3558 .oplock_response = smb2_oplock_response,
3559 .queryfs = smb311_queryfs,
3560 .mand_lock = smb2_mand_lock,
3561 .mand_unlock_range = smb2_unlock_range,
3562 .push_mand_locks = smb2_push_mandatory_locks,
3563 .get_lease_key = smb2_get_lease_key,
3564 .set_lease_key = smb2_set_lease_key,
3565 .new_lease_key = smb2_new_lease_key,
3566 .generate_signingkey = generate_smb311signingkey,
3567 .calc_signature = smb3_calc_signature,
3568 .set_integrity = smb3_set_integrity,
3569 .is_read_op = smb21_is_read_op,
3570 .set_oplock_level = smb3_set_oplock_level,
3571 .create_lease_buf = smb3_create_lease_buf,
3572 .parse_lease_buf = smb3_parse_lease_buf,
3573 .copychunk_range = smb2_copychunk_range,
3574 .duplicate_extents = smb2_duplicate_extents,
3575 /* .validate_negotiate = smb3_validate_negotiate, */ /* not used in 3.11 */
3576 .wp_retry_size = smb2_wp_retry_size,
3577 .dir_needs_close = smb2_dir_needs_close,
3578 .fallocate = smb3_fallocate,
3579 .enum_snapshots = smb3_enum_snapshots,
3580 .init_transform_rq = smb3_init_transform_rq,
3581 .is_transform_hdr = smb3_is_transform_hdr,
3582 .receive_transform = smb3_receive_transform,
3583 .get_dfs_refer = smb2_get_dfs_refer,
3584 .select_sectype = smb2_select_sectype,
3585 #ifdef CONFIG_CIFS_XATTR
3586 .query_all_EAs = smb2_query_eas,
3587 .set_EA = smb2_set_ea,
3588 #endif /* CIFS_XATTR */
3589 #ifdef CONFIG_CIFS_ACL
3590 .get_acl = get_smb2_acl,
3591 .get_acl_by_fid = get_smb2_acl_by_fid,
3592 .set_acl = set_smb2_acl,
3593 #endif /* CIFS_ACL */
3594 .next_header = smb2_next_header,
3597 struct smb_version_values smb20_values = {
3598 .version_string = SMB20_VERSION_STRING,
3599 .protocol_id = SMB20_PROT_ID,
3600 .req_capabilities = 0, /* MBZ */
3601 .large_lock_type = 0,
3602 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
3603 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
3604 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
3605 .header_size = sizeof(struct smb2_sync_hdr),
3606 .header_preamble_size = 0,
3607 .max_header_size = MAX_SMB2_HDR_SIZE,
3608 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
3609 .lock_cmd = SMB2_LOCK,
3611 .cap_nt_find = SMB2_NT_FIND,
3612 .cap_large_files = SMB2_LARGE_FILES,
3613 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
3614 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
3615 .create_lease_size = sizeof(struct create_lease),
3618 struct smb_version_values smb21_values = {
3619 .version_string = SMB21_VERSION_STRING,
3620 .protocol_id = SMB21_PROT_ID,
3621 .req_capabilities = 0, /* MBZ on negotiate req until SMB3 dialect */
3622 .large_lock_type = 0,
3623 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
3624 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
3625 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
3626 .header_size = sizeof(struct smb2_sync_hdr),
3627 .header_preamble_size = 0,
3628 .max_header_size = MAX_SMB2_HDR_SIZE,
3629 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
3630 .lock_cmd = SMB2_LOCK,
3632 .cap_nt_find = SMB2_NT_FIND,
3633 .cap_large_files = SMB2_LARGE_FILES,
3634 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
3635 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
3636 .create_lease_size = sizeof(struct create_lease),
3639 struct smb_version_values smb3any_values = {
3640 .version_string = SMB3ANY_VERSION_STRING,
3641 .protocol_id = SMB302_PROT_ID, /* doesn't matter, send protocol array */
3642 .req_capabilities = SMB2_GLOBAL_CAP_DFS | SMB2_GLOBAL_CAP_LEASING | SMB2_GLOBAL_CAP_LARGE_MTU | SMB2_GLOBAL_CAP_PERSISTENT_HANDLES | SMB2_GLOBAL_CAP_ENCRYPTION,
3643 .large_lock_type = 0,
3644 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
3645 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
3646 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
3647 .header_size = sizeof(struct smb2_sync_hdr),
3648 .header_preamble_size = 0,
3649 .max_header_size = MAX_SMB2_HDR_SIZE,
3650 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
3651 .lock_cmd = SMB2_LOCK,
3653 .cap_nt_find = SMB2_NT_FIND,
3654 .cap_large_files = SMB2_LARGE_FILES,
3655 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
3656 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
3657 .create_lease_size = sizeof(struct create_lease_v2),
3660 struct smb_version_values smbdefault_values = {
3661 .version_string = SMBDEFAULT_VERSION_STRING,
3662 .protocol_id = SMB302_PROT_ID, /* doesn't matter, send protocol array */
3663 .req_capabilities = SMB2_GLOBAL_CAP_DFS | SMB2_GLOBAL_CAP_LEASING | SMB2_GLOBAL_CAP_LARGE_MTU | SMB2_GLOBAL_CAP_PERSISTENT_HANDLES | SMB2_GLOBAL_CAP_ENCRYPTION,
3664 .large_lock_type = 0,
3665 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
3666 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
3667 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
3668 .header_size = sizeof(struct smb2_sync_hdr),
3669 .header_preamble_size = 0,
3670 .max_header_size = MAX_SMB2_HDR_SIZE,
3671 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
3672 .lock_cmd = SMB2_LOCK,
3674 .cap_nt_find = SMB2_NT_FIND,
3675 .cap_large_files = SMB2_LARGE_FILES,
3676 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
3677 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
3678 .create_lease_size = sizeof(struct create_lease_v2),
3681 struct smb_version_values smb30_values = {
3682 .version_string = SMB30_VERSION_STRING,
3683 .protocol_id = SMB30_PROT_ID,
3684 .req_capabilities = SMB2_GLOBAL_CAP_DFS | SMB2_GLOBAL_CAP_LEASING | SMB2_GLOBAL_CAP_LARGE_MTU | SMB2_GLOBAL_CAP_PERSISTENT_HANDLES | SMB2_GLOBAL_CAP_ENCRYPTION,
3685 .large_lock_type = 0,
3686 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
3687 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
3688 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
3689 .header_size = sizeof(struct smb2_sync_hdr),
3690 .header_preamble_size = 0,
3691 .max_header_size = MAX_SMB2_HDR_SIZE,
3692 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
3693 .lock_cmd = SMB2_LOCK,
3695 .cap_nt_find = SMB2_NT_FIND,
3696 .cap_large_files = SMB2_LARGE_FILES,
3697 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
3698 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
3699 .create_lease_size = sizeof(struct create_lease_v2),
3702 struct smb_version_values smb302_values = {
3703 .version_string = SMB302_VERSION_STRING,
3704 .protocol_id = SMB302_PROT_ID,
3705 .req_capabilities = SMB2_GLOBAL_CAP_DFS | SMB2_GLOBAL_CAP_LEASING | SMB2_GLOBAL_CAP_LARGE_MTU | SMB2_GLOBAL_CAP_PERSISTENT_HANDLES | SMB2_GLOBAL_CAP_ENCRYPTION,
3706 .large_lock_type = 0,
3707 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
3708 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
3709 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
3710 .header_size = sizeof(struct smb2_sync_hdr),
3711 .header_preamble_size = 0,
3712 .max_header_size = MAX_SMB2_HDR_SIZE,
3713 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
3714 .lock_cmd = SMB2_LOCK,
3716 .cap_nt_find = SMB2_NT_FIND,
3717 .cap_large_files = SMB2_LARGE_FILES,
3718 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
3719 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
3720 .create_lease_size = sizeof(struct create_lease_v2),
3723 struct smb_version_values smb311_values = {
3724 .version_string = SMB311_VERSION_STRING,
3725 .protocol_id = SMB311_PROT_ID,
3726 .req_capabilities = SMB2_GLOBAL_CAP_DFS | SMB2_GLOBAL_CAP_LEASING | SMB2_GLOBAL_CAP_LARGE_MTU | SMB2_GLOBAL_CAP_PERSISTENT_HANDLES | SMB2_GLOBAL_CAP_ENCRYPTION,
3727 .large_lock_type = 0,
3728 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
3729 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
3730 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
3731 .header_size = sizeof(struct smb2_sync_hdr),
3732 .header_preamble_size = 0,
3733 .max_header_size = MAX_SMB2_HDR_SIZE,
3734 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
3735 .lock_cmd = SMB2_LOCK,
3737 .cap_nt_find = SMB2_NT_FIND,
3738 .cap_large_files = SMB2_LARGE_FILES,
3739 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
3740 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
3741 .create_lease_size = sizeof(struct create_lease_v2),