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 = get_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 = get_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 spin_unlock(&GlobalMid_Lock);
210 spin_unlock(&GlobalMid_Lock);
215 smb2_dump_detail(void *buf)
217 #ifdef CONFIG_CIFS_DEBUG2
218 struct smb2_sync_hdr *shdr = get_sync_hdr(buf);
220 cifs_dbg(VFS, "Cmd: %d Err: 0x%x Flags: 0x%x Mid: %llu Pid: %d\n",
221 shdr->Command, shdr->Status, shdr->Flags, shdr->MessageId,
223 cifs_dbg(VFS, "smb buf %p len %u\n", buf, smb2_calc_size(buf));
228 smb2_need_neg(struct TCP_Server_Info *server)
230 return server->max_read == 0;
234 smb2_negotiate(const unsigned int xid, struct cifs_ses *ses)
237 ses->server->CurrentMid = 0;
238 rc = SMB2_negotiate(xid, ses);
239 /* BB we probably don't need to retry with modern servers */
246 smb2_negotiate_wsize(struct cifs_tcon *tcon, struct smb_vol *volume_info)
248 struct TCP_Server_Info *server = tcon->ses->server;
251 /* start with specified wsize, or default */
252 wsize = volume_info->wsize ? volume_info->wsize : CIFS_DEFAULT_IOSIZE;
253 wsize = min_t(unsigned int, wsize, server->max_write);
254 #ifdef CONFIG_CIFS_SMB_DIRECT
257 wsize = min_t(unsigned int,
258 wsize, server->smbd_conn->max_fragmented_send_size);
260 wsize = min_t(unsigned int,
261 wsize, server->smbd_conn->max_readwrite_size);
264 if (!(server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU))
265 wsize = min_t(unsigned int, wsize, SMB2_MAX_BUFFER_SIZE);
271 smb2_negotiate_rsize(struct cifs_tcon *tcon, struct smb_vol *volume_info)
273 struct TCP_Server_Info *server = tcon->ses->server;
276 /* start with specified rsize, or default */
277 rsize = volume_info->rsize ? volume_info->rsize : CIFS_DEFAULT_IOSIZE;
278 rsize = min_t(unsigned int, rsize, server->max_read);
279 #ifdef CONFIG_CIFS_SMB_DIRECT
282 rsize = min_t(unsigned int,
283 rsize, server->smbd_conn->max_fragmented_recv_size);
285 rsize = min_t(unsigned int,
286 rsize, server->smbd_conn->max_readwrite_size);
290 if (!(server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU))
291 rsize = min_t(unsigned int, rsize, SMB2_MAX_BUFFER_SIZE);
296 #ifdef CONFIG_CIFS_STATS2
298 SMB3_request_interfaces(const unsigned int xid, struct cifs_tcon *tcon)
301 unsigned int ret_data_len = 0;
302 struct network_interface_info_ioctl_rsp *out_buf;
304 rc = SMB2_ioctl(xid, tcon, NO_FILE_ID, NO_FILE_ID,
305 FSCTL_QUERY_NETWORK_INTERFACE_INFO, true /* is_fsctl */,
306 NULL /* no data input */, 0 /* no data input */,
307 (char **)&out_buf, &ret_data_len);
309 cifs_dbg(VFS, "error %d on ioctl to get interface list\n", rc);
310 else if (ret_data_len < sizeof(struct network_interface_info_ioctl_rsp)) {
311 cifs_dbg(VFS, "server returned bad net interface info buf\n");
314 /* Dump info on first interface */
315 cifs_dbg(FYI, "Adapter Capability 0x%x\t",
316 le32_to_cpu(out_buf->Capability));
317 cifs_dbg(FYI, "Link Speed %lld\n",
318 le64_to_cpu(out_buf->LinkSpeed));
326 * Open the directory at the root of a share
328 int open_shroot(unsigned int xid, struct cifs_tcon *tcon, struct cifs_fid *pfid)
330 struct cifs_open_parms oparams;
332 __le16 srch_path = 0; /* Null - since an open of top of share */
333 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
335 mutex_lock(&tcon->prfid_mutex);
336 if (tcon->valid_root_fid) {
337 cifs_dbg(FYI, "found a cached root file handle\n");
338 memcpy(pfid, tcon->prfid, sizeof(struct cifs_fid));
339 mutex_unlock(&tcon->prfid_mutex);
344 oparams.create_options = 0;
345 oparams.desired_access = FILE_READ_ATTRIBUTES;
346 oparams.disposition = FILE_OPEN;
348 oparams.reconnect = false;
350 rc = SMB2_open(xid, &oparams, &srch_path, &oplock, NULL, NULL);
352 memcpy(tcon->prfid, pfid, sizeof(struct cifs_fid));
353 tcon->valid_root_fid = true;
355 mutex_unlock(&tcon->prfid_mutex);
360 smb3_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon)
363 __le16 srch_path = 0; /* Null - open root of share */
364 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
365 struct cifs_open_parms oparms;
367 bool no_cached_open = tcon->nohandlecache;
370 oparms.desired_access = FILE_READ_ATTRIBUTES;
371 oparms.disposition = FILE_OPEN;
372 oparms.create_options = 0;
374 oparms.reconnect = false;
377 rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL);
379 rc = open_shroot(xid, tcon, &fid);
384 #ifdef CONFIG_CIFS_STATS2
385 SMB3_request_interfaces(xid, tcon);
388 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
389 FS_ATTRIBUTE_INFORMATION);
390 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
391 FS_DEVICE_INFORMATION);
392 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
393 FS_SECTOR_SIZE_INFORMATION); /* SMB3 specific */
395 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
400 smb2_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon)
403 __le16 srch_path = 0; /* Null - open root of share */
404 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
405 struct cifs_open_parms oparms;
409 oparms.desired_access = FILE_READ_ATTRIBUTES;
410 oparms.disposition = FILE_OPEN;
411 oparms.create_options = 0;
413 oparms.reconnect = false;
415 rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL);
419 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
420 FS_ATTRIBUTE_INFORMATION);
421 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
422 FS_DEVICE_INFORMATION);
423 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
428 smb2_is_path_accessible(const unsigned int xid, struct cifs_tcon *tcon,
429 struct cifs_sb_info *cifs_sb, const char *full_path)
433 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
434 struct cifs_open_parms oparms;
437 if ((*full_path == 0) && tcon->valid_root_fid)
440 utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb);
445 oparms.desired_access = FILE_READ_ATTRIBUTES;
446 oparms.disposition = FILE_OPEN;
447 oparms.create_options = 0;
449 oparms.reconnect = false;
451 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL);
457 rc = SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
463 smb2_get_srv_inum(const unsigned int xid, struct cifs_tcon *tcon,
464 struct cifs_sb_info *cifs_sb, const char *full_path,
465 u64 *uniqueid, FILE_ALL_INFO *data)
467 *uniqueid = le64_to_cpu(data->IndexNumber);
472 smb2_query_file_info(const unsigned int xid, struct cifs_tcon *tcon,
473 struct cifs_fid *fid, FILE_ALL_INFO *data)
476 struct smb2_file_all_info *smb2_data;
478 smb2_data = kzalloc(sizeof(struct smb2_file_all_info) + PATH_MAX * 2,
480 if (smb2_data == NULL)
483 rc = SMB2_query_info(xid, tcon, fid->persistent_fid, fid->volatile_fid,
486 move_smb2_info_to_cifs(data, smb2_data);
491 #ifdef CONFIG_CIFS_XATTR
493 move_smb2_ea_to_cifs(char *dst, size_t dst_size,
494 struct smb2_file_full_ea_info *src, size_t src_size,
495 const unsigned char *ea_name)
498 unsigned int ea_name_len = ea_name ? strlen(ea_name) : 0;
500 size_t name_len, value_len, user_name_len;
502 while (src_size > 0) {
503 name = &src->ea_data[0];
504 name_len = (size_t)src->ea_name_length;
505 value = &src->ea_data[src->ea_name_length + 1];
506 value_len = (size_t)le16_to_cpu(src->ea_value_length);
512 if (src_size < 8 + name_len + 1 + value_len) {
513 cifs_dbg(FYI, "EA entry goes beyond length of list\n");
519 if (ea_name_len == name_len &&
520 memcmp(ea_name, name, name_len) == 0) {
524 if (dst_size < value_len) {
528 memcpy(dst, value, value_len);
532 /* 'user.' plus a terminating null */
533 user_name_len = 5 + 1 + name_len;
537 if (dst_size >= user_name_len) {
538 dst_size -= user_name_len;
539 memcpy(dst, "user.", 5);
541 memcpy(dst, src->ea_data, name_len);
545 } else if (dst_size == 0) {
546 /* skip copy - calc size only */
548 /* stop before overrun buffer */
554 if (!src->next_entry_offset)
557 if (src_size < le32_to_cpu(src->next_entry_offset)) {
558 /* stop before overrun buffer */
562 src_size -= le32_to_cpu(src->next_entry_offset);
563 src = (void *)((char *)src +
564 le32_to_cpu(src->next_entry_offset));
567 /* didn't find the named attribute */
576 smb2_query_eas(const unsigned int xid, struct cifs_tcon *tcon,
577 const unsigned char *path, const unsigned char *ea_name,
578 char *ea_data, size_t buf_size,
579 struct cifs_sb_info *cifs_sb)
583 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
584 struct cifs_open_parms oparms;
586 struct smb2_file_full_ea_info *smb2_data;
587 int ea_buf_size = SMB2_MIN_EA_BUF;
589 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
594 oparms.desired_access = FILE_READ_EA;
595 oparms.disposition = FILE_OPEN;
596 oparms.create_options = 0;
598 oparms.reconnect = false;
600 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL);
603 cifs_dbg(FYI, "open failed rc=%d\n", rc);
608 smb2_data = kzalloc(ea_buf_size, GFP_KERNEL);
609 if (smb2_data == NULL) {
610 SMB2_close(xid, tcon, fid.persistent_fid,
615 rc = SMB2_query_eas(xid, tcon, fid.persistent_fid,
617 ea_buf_size, smb2_data);
625 if (ea_buf_size > SMB2_MAX_EA_BUF) {
626 cifs_dbg(VFS, "EA size is too large\n");
627 SMB2_close(xid, tcon, fid.persistent_fid,
633 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
636 * If ea_name is NULL (listxattr) and there are no EAs, return 0 as it's
637 * not an error. Otherwise, the specified ea_name was not found.
640 rc = move_smb2_ea_to_cifs(ea_data, buf_size, smb2_data,
641 SMB2_MAX_EA_BUF, ea_name);
642 else if (!ea_name && rc == -ENODATA)
651 smb2_set_ea(const unsigned int xid, struct cifs_tcon *tcon,
652 const char *path, const char *ea_name, const void *ea_value,
653 const __u16 ea_value_len, const struct nls_table *nls_codepage,
654 struct cifs_sb_info *cifs_sb)
658 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
659 struct cifs_open_parms oparms;
661 struct smb2_file_full_ea_info *ea;
662 int ea_name_len = strlen(ea_name);
665 if (ea_name_len > 255)
668 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
673 oparms.desired_access = FILE_WRITE_EA;
674 oparms.disposition = FILE_OPEN;
675 oparms.create_options = 0;
677 oparms.reconnect = false;
679 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL);
682 cifs_dbg(FYI, "open failed rc=%d\n", rc);
686 len = sizeof(ea) + ea_name_len + ea_value_len + 1;
687 ea = kzalloc(len, GFP_KERNEL);
689 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
693 ea->ea_name_length = ea_name_len;
694 ea->ea_value_length = cpu_to_le16(ea_value_len);
695 memcpy(ea->ea_data, ea_name, ea_name_len + 1);
696 memcpy(ea->ea_data + ea_name_len + 1, ea_value, ea_value_len);
698 rc = SMB2_set_ea(xid, tcon, fid.persistent_fid, fid.volatile_fid, ea,
700 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
707 smb2_can_echo(struct TCP_Server_Info *server)
709 return server->echoes;
713 smb2_clear_stats(struct cifs_tcon *tcon)
715 #ifdef CONFIG_CIFS_STATS
717 for (i = 0; i < NUMBER_OF_SMB2_COMMANDS; i++) {
718 atomic_set(&tcon->stats.smb2_stats.smb2_com_sent[i], 0);
719 atomic_set(&tcon->stats.smb2_stats.smb2_com_failed[i], 0);
725 smb2_dump_share_caps(struct seq_file *m, struct cifs_tcon *tcon)
727 seq_puts(m, "\n\tShare Capabilities:");
728 if (tcon->capabilities & SMB2_SHARE_CAP_DFS)
729 seq_puts(m, " DFS,");
730 if (tcon->capabilities & SMB2_SHARE_CAP_CONTINUOUS_AVAILABILITY)
731 seq_puts(m, " CONTINUOUS AVAILABILITY,");
732 if (tcon->capabilities & SMB2_SHARE_CAP_SCALEOUT)
733 seq_puts(m, " SCALEOUT,");
734 if (tcon->capabilities & SMB2_SHARE_CAP_CLUSTER)
735 seq_puts(m, " CLUSTER,");
736 if (tcon->capabilities & SMB2_SHARE_CAP_ASYMMETRIC)
737 seq_puts(m, " ASYMMETRIC,");
738 if (tcon->capabilities == 0)
739 seq_puts(m, " None");
740 if (tcon->ss_flags & SSINFO_FLAGS_ALIGNED_DEVICE)
741 seq_puts(m, " Aligned,");
742 if (tcon->ss_flags & SSINFO_FLAGS_PARTITION_ALIGNED_ON_DEVICE)
743 seq_puts(m, " Partition Aligned,");
744 if (tcon->ss_flags & SSINFO_FLAGS_NO_SEEK_PENALTY)
745 seq_puts(m, " SSD,");
746 if (tcon->ss_flags & SSINFO_FLAGS_TRIM_ENABLED)
747 seq_puts(m, " TRIM-support,");
749 seq_printf(m, "\tShare Flags: 0x%x", tcon->share_flags);
750 if (tcon->perf_sector_size)
751 seq_printf(m, "\tOptimal sector size: 0x%x",
752 tcon->perf_sector_size);
756 smb2_print_stats(struct seq_file *m, struct cifs_tcon *tcon)
758 #ifdef CONFIG_CIFS_STATS
759 atomic_t *sent = tcon->stats.smb2_stats.smb2_com_sent;
760 atomic_t *failed = tcon->stats.smb2_stats.smb2_com_failed;
761 seq_printf(m, "\nNegotiates: %d sent %d failed",
762 atomic_read(&sent[SMB2_NEGOTIATE_HE]),
763 atomic_read(&failed[SMB2_NEGOTIATE_HE]));
764 seq_printf(m, "\nSessionSetups: %d sent %d failed",
765 atomic_read(&sent[SMB2_SESSION_SETUP_HE]),
766 atomic_read(&failed[SMB2_SESSION_SETUP_HE]));
767 seq_printf(m, "\nLogoffs: %d sent %d failed",
768 atomic_read(&sent[SMB2_LOGOFF_HE]),
769 atomic_read(&failed[SMB2_LOGOFF_HE]));
770 seq_printf(m, "\nTreeConnects: %d sent %d failed",
771 atomic_read(&sent[SMB2_TREE_CONNECT_HE]),
772 atomic_read(&failed[SMB2_TREE_CONNECT_HE]));
773 seq_printf(m, "\nTreeDisconnects: %d sent %d failed",
774 atomic_read(&sent[SMB2_TREE_DISCONNECT_HE]),
775 atomic_read(&failed[SMB2_TREE_DISCONNECT_HE]));
776 seq_printf(m, "\nCreates: %d sent %d failed",
777 atomic_read(&sent[SMB2_CREATE_HE]),
778 atomic_read(&failed[SMB2_CREATE_HE]));
779 seq_printf(m, "\nCloses: %d sent %d failed",
780 atomic_read(&sent[SMB2_CLOSE_HE]),
781 atomic_read(&failed[SMB2_CLOSE_HE]));
782 seq_printf(m, "\nFlushes: %d sent %d failed",
783 atomic_read(&sent[SMB2_FLUSH_HE]),
784 atomic_read(&failed[SMB2_FLUSH_HE]));
785 seq_printf(m, "\nReads: %d sent %d failed",
786 atomic_read(&sent[SMB2_READ_HE]),
787 atomic_read(&failed[SMB2_READ_HE]));
788 seq_printf(m, "\nWrites: %d sent %d failed",
789 atomic_read(&sent[SMB2_WRITE_HE]),
790 atomic_read(&failed[SMB2_WRITE_HE]));
791 seq_printf(m, "\nLocks: %d sent %d failed",
792 atomic_read(&sent[SMB2_LOCK_HE]),
793 atomic_read(&failed[SMB2_LOCK_HE]));
794 seq_printf(m, "\nIOCTLs: %d sent %d failed",
795 atomic_read(&sent[SMB2_IOCTL_HE]),
796 atomic_read(&failed[SMB2_IOCTL_HE]));
797 seq_printf(m, "\nCancels: %d sent %d failed",
798 atomic_read(&sent[SMB2_CANCEL_HE]),
799 atomic_read(&failed[SMB2_CANCEL_HE]));
800 seq_printf(m, "\nEchos: %d sent %d failed",
801 atomic_read(&sent[SMB2_ECHO_HE]),
802 atomic_read(&failed[SMB2_ECHO_HE]));
803 seq_printf(m, "\nQueryDirectories: %d sent %d failed",
804 atomic_read(&sent[SMB2_QUERY_DIRECTORY_HE]),
805 atomic_read(&failed[SMB2_QUERY_DIRECTORY_HE]));
806 seq_printf(m, "\nChangeNotifies: %d sent %d failed",
807 atomic_read(&sent[SMB2_CHANGE_NOTIFY_HE]),
808 atomic_read(&failed[SMB2_CHANGE_NOTIFY_HE]));
809 seq_printf(m, "\nQueryInfos: %d sent %d failed",
810 atomic_read(&sent[SMB2_QUERY_INFO_HE]),
811 atomic_read(&failed[SMB2_QUERY_INFO_HE]));
812 seq_printf(m, "\nSetInfos: %d sent %d failed",
813 atomic_read(&sent[SMB2_SET_INFO_HE]),
814 atomic_read(&failed[SMB2_SET_INFO_HE]));
815 seq_printf(m, "\nOplockBreaks: %d sent %d failed",
816 atomic_read(&sent[SMB2_OPLOCK_BREAK_HE]),
817 atomic_read(&failed[SMB2_OPLOCK_BREAK_HE]));
822 smb2_set_fid(struct cifsFileInfo *cfile, struct cifs_fid *fid, __u32 oplock)
824 struct cifsInodeInfo *cinode = CIFS_I(d_inode(cfile->dentry));
825 struct TCP_Server_Info *server = tlink_tcon(cfile->tlink)->ses->server;
827 cfile->fid.persistent_fid = fid->persistent_fid;
828 cfile->fid.volatile_fid = fid->volatile_fid;
829 server->ops->set_oplock_level(cinode, oplock, fid->epoch,
831 cinode->can_cache_brlcks = CIFS_CACHE_WRITE(cinode);
832 memcpy(cfile->fid.create_guid, fid->create_guid, 16);
836 smb2_close_file(const unsigned int xid, struct cifs_tcon *tcon,
837 struct cifs_fid *fid)
839 SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
843 SMB2_request_res_key(const unsigned int xid, struct cifs_tcon *tcon,
844 u64 persistent_fid, u64 volatile_fid,
845 struct copychunk_ioctl *pcchunk)
848 unsigned int ret_data_len;
849 struct resume_key_req *res_key;
851 rc = SMB2_ioctl(xid, tcon, persistent_fid, volatile_fid,
852 FSCTL_SRV_REQUEST_RESUME_KEY, true /* is_fsctl */,
853 NULL, 0 /* no input */,
854 (char **)&res_key, &ret_data_len);
857 cifs_dbg(VFS, "refcpy ioctl error %d getting resume key\n", rc);
858 goto req_res_key_exit;
860 if (ret_data_len < sizeof(struct resume_key_req)) {
861 cifs_dbg(VFS, "Invalid refcopy resume key length\n");
863 goto req_res_key_exit;
865 memcpy(pcchunk->SourceKey, res_key->ResumeKey, COPY_CHUNK_RES_KEY_SIZE);
873 smb2_copychunk_range(const unsigned int xid,
874 struct cifsFileInfo *srcfile,
875 struct cifsFileInfo *trgtfile, u64 src_off,
876 u64 len, u64 dest_off)
879 unsigned int ret_data_len;
880 struct copychunk_ioctl *pcchunk;
881 struct copychunk_ioctl_rsp *retbuf = NULL;
882 struct cifs_tcon *tcon;
883 int chunks_copied = 0;
884 bool chunk_sizes_updated = false;
885 ssize_t bytes_written, total_bytes_written = 0;
887 pcchunk = kmalloc(sizeof(struct copychunk_ioctl), GFP_KERNEL);
892 cifs_dbg(FYI, "in smb2_copychunk_range - about to call request res key\n");
893 /* Request a key from the server to identify the source of the copy */
894 rc = SMB2_request_res_key(xid, tlink_tcon(srcfile->tlink),
895 srcfile->fid.persistent_fid,
896 srcfile->fid.volatile_fid, pcchunk);
898 /* Note: request_res_key sets res_key null only if rc !=0 */
902 /* For now array only one chunk long, will make more flexible later */
903 pcchunk->ChunkCount = cpu_to_le32(1);
904 pcchunk->Reserved = 0;
905 pcchunk->Reserved2 = 0;
907 tcon = tlink_tcon(trgtfile->tlink);
910 pcchunk->SourceOffset = cpu_to_le64(src_off);
911 pcchunk->TargetOffset = cpu_to_le64(dest_off);
913 cpu_to_le32(min_t(u32, len, tcon->max_bytes_chunk));
915 /* Request server copy to target from src identified by key */
916 rc = SMB2_ioctl(xid, tcon, trgtfile->fid.persistent_fid,
917 trgtfile->fid.volatile_fid, FSCTL_SRV_COPYCHUNK_WRITE,
918 true /* is_fsctl */, (char *)pcchunk,
919 sizeof(struct copychunk_ioctl), (char **)&retbuf,
923 sizeof(struct copychunk_ioctl_rsp)) {
924 cifs_dbg(VFS, "invalid cchunk response size\n");
928 if (retbuf->TotalBytesWritten == 0) {
929 cifs_dbg(FYI, "no bytes copied\n");
934 * Check if server claimed to write more than we asked
936 if (le32_to_cpu(retbuf->TotalBytesWritten) >
937 le32_to_cpu(pcchunk->Length)) {
938 cifs_dbg(VFS, "invalid copy chunk response\n");
942 if (le32_to_cpu(retbuf->ChunksWritten) != 1) {
943 cifs_dbg(VFS, "invalid num chunks written\n");
949 bytes_written = le32_to_cpu(retbuf->TotalBytesWritten);
950 src_off += bytes_written;
951 dest_off += bytes_written;
952 len -= bytes_written;
953 total_bytes_written += bytes_written;
955 cifs_dbg(FYI, "Chunks %d PartialChunk %d Total %zu\n",
956 le32_to_cpu(retbuf->ChunksWritten),
957 le32_to_cpu(retbuf->ChunkBytesWritten),
959 } else if (rc == -EINVAL) {
960 if (ret_data_len != sizeof(struct copychunk_ioctl_rsp))
963 cifs_dbg(FYI, "MaxChunks %d BytesChunk %d MaxCopy %d\n",
964 le32_to_cpu(retbuf->ChunksWritten),
965 le32_to_cpu(retbuf->ChunkBytesWritten),
966 le32_to_cpu(retbuf->TotalBytesWritten));
969 * Check if this is the first request using these sizes,
970 * (ie check if copy succeed once with original sizes
971 * and check if the server gave us different sizes after
972 * we already updated max sizes on previous request).
973 * if not then why is the server returning an error now
975 if ((chunks_copied != 0) || chunk_sizes_updated)
978 /* Check that server is not asking us to grow size */
979 if (le32_to_cpu(retbuf->ChunkBytesWritten) <
980 tcon->max_bytes_chunk)
981 tcon->max_bytes_chunk =
982 le32_to_cpu(retbuf->ChunkBytesWritten);
984 goto cchunk_out; /* server gave us bogus size */
986 /* No need to change MaxChunks since already set to 1 */
987 chunk_sizes_updated = true;
998 return total_bytes_written;
1002 smb2_flush_file(const unsigned int xid, struct cifs_tcon *tcon,
1003 struct cifs_fid *fid)
1005 return SMB2_flush(xid, tcon, fid->persistent_fid, fid->volatile_fid);
1009 smb2_read_data_offset(char *buf)
1011 struct smb2_read_rsp *rsp = (struct smb2_read_rsp *)buf;
1012 return rsp->DataOffset;
1016 smb2_read_data_length(char *buf, bool in_remaining)
1018 struct smb2_read_rsp *rsp = (struct smb2_read_rsp *)buf;
1021 return le32_to_cpu(rsp->DataRemaining);
1023 return le32_to_cpu(rsp->DataLength);
1028 smb2_sync_read(const unsigned int xid, struct cifs_fid *pfid,
1029 struct cifs_io_parms *parms, unsigned int *bytes_read,
1030 char **buf, int *buf_type)
1032 parms->persistent_fid = pfid->persistent_fid;
1033 parms->volatile_fid = pfid->volatile_fid;
1034 return SMB2_read(xid, parms, bytes_read, buf, buf_type);
1038 smb2_sync_write(const unsigned int xid, struct cifs_fid *pfid,
1039 struct cifs_io_parms *parms, unsigned int *written,
1040 struct kvec *iov, unsigned long nr_segs)
1043 parms->persistent_fid = pfid->persistent_fid;
1044 parms->volatile_fid = pfid->volatile_fid;
1045 return SMB2_write(xid, parms, written, iov, nr_segs);
1048 /* Set or clear the SPARSE_FILE attribute based on value passed in setsparse */
1049 static bool smb2_set_sparse(const unsigned int xid, struct cifs_tcon *tcon,
1050 struct cifsFileInfo *cfile, struct inode *inode, __u8 setsparse)
1052 struct cifsInodeInfo *cifsi;
1055 cifsi = CIFS_I(inode);
1057 /* if file already sparse don't bother setting sparse again */
1058 if ((cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) && setsparse)
1059 return true; /* already sparse */
1061 if (!(cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) && !setsparse)
1062 return true; /* already not sparse */
1065 * Can't check for sparse support on share the usual way via the
1066 * FS attribute info (FILE_SUPPORTS_SPARSE_FILES) on the share
1067 * since Samba server doesn't set the flag on the share, yet
1068 * supports the set sparse FSCTL and returns sparse correctly
1069 * in the file attributes. If we fail setting sparse though we
1070 * mark that server does not support sparse files for this share
1071 * to avoid repeatedly sending the unsupported fsctl to server
1072 * if the file is repeatedly extended.
1074 if (tcon->broken_sparse_sup)
1077 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
1078 cfile->fid.volatile_fid, FSCTL_SET_SPARSE,
1080 &setsparse, 1, NULL, NULL);
1082 tcon->broken_sparse_sup = true;
1083 cifs_dbg(FYI, "set sparse rc = %d\n", rc);
1088 cifsi->cifsAttrs |= FILE_ATTRIBUTE_SPARSE_FILE;
1090 cifsi->cifsAttrs &= (~FILE_ATTRIBUTE_SPARSE_FILE);
1096 smb2_set_file_size(const unsigned int xid, struct cifs_tcon *tcon,
1097 struct cifsFileInfo *cfile, __u64 size, bool set_alloc)
1099 __le64 eof = cpu_to_le64(size);
1100 struct inode *inode;
1103 * If extending file more than one page make sparse. Many Linux fs
1104 * make files sparse by default when extending via ftruncate
1106 inode = d_inode(cfile->dentry);
1108 if (!set_alloc && (size > inode->i_size + 8192)) {
1109 __u8 set_sparse = 1;
1111 /* whether set sparse succeeds or not, extend the file */
1112 smb2_set_sparse(xid, tcon, cfile, inode, set_sparse);
1115 return SMB2_set_eof(xid, tcon, cfile->fid.persistent_fid,
1116 cfile->fid.volatile_fid, cfile->pid, &eof, false);
1120 smb2_duplicate_extents(const unsigned int xid,
1121 struct cifsFileInfo *srcfile,
1122 struct cifsFileInfo *trgtfile, u64 src_off,
1123 u64 len, u64 dest_off)
1126 unsigned int ret_data_len;
1127 struct duplicate_extents_to_file dup_ext_buf;
1128 struct cifs_tcon *tcon = tlink_tcon(trgtfile->tlink);
1130 /* server fileays advertise duplicate extent support with this flag */
1131 if ((le32_to_cpu(tcon->fsAttrInfo.Attributes) &
1132 FILE_SUPPORTS_BLOCK_REFCOUNTING) == 0)
1135 dup_ext_buf.VolatileFileHandle = srcfile->fid.volatile_fid;
1136 dup_ext_buf.PersistentFileHandle = srcfile->fid.persistent_fid;
1137 dup_ext_buf.SourceFileOffset = cpu_to_le64(src_off);
1138 dup_ext_buf.TargetFileOffset = cpu_to_le64(dest_off);
1139 dup_ext_buf.ByteCount = cpu_to_le64(len);
1140 cifs_dbg(FYI, "duplicate extents: src off %lld dst off %lld len %lld",
1141 src_off, dest_off, len);
1143 rc = smb2_set_file_size(xid, tcon, trgtfile, dest_off + len, false);
1145 goto duplicate_extents_out;
1147 rc = SMB2_ioctl(xid, tcon, trgtfile->fid.persistent_fid,
1148 trgtfile->fid.volatile_fid,
1149 FSCTL_DUPLICATE_EXTENTS_TO_FILE,
1150 true /* is_fsctl */,
1151 (char *)&dup_ext_buf,
1152 sizeof(struct duplicate_extents_to_file),
1156 if (ret_data_len > 0)
1157 cifs_dbg(FYI, "non-zero response length in duplicate extents");
1159 duplicate_extents_out:
1164 smb2_set_compression(const unsigned int xid, struct cifs_tcon *tcon,
1165 struct cifsFileInfo *cfile)
1167 return SMB2_set_compression(xid, tcon, cfile->fid.persistent_fid,
1168 cfile->fid.volatile_fid);
1172 smb3_set_integrity(const unsigned int xid, struct cifs_tcon *tcon,
1173 struct cifsFileInfo *cfile)
1175 struct fsctl_set_integrity_information_req integr_info;
1176 unsigned int ret_data_len;
1178 integr_info.ChecksumAlgorithm = cpu_to_le16(CHECKSUM_TYPE_UNCHANGED);
1179 integr_info.Flags = 0;
1180 integr_info.Reserved = 0;
1182 return SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
1183 cfile->fid.volatile_fid,
1184 FSCTL_SET_INTEGRITY_INFORMATION,
1185 true /* is_fsctl */,
1186 (char *)&integr_info,
1187 sizeof(struct fsctl_set_integrity_information_req),
1194 smb3_enum_snapshots(const unsigned int xid, struct cifs_tcon *tcon,
1195 struct cifsFileInfo *cfile, void __user *ioc_buf)
1197 char *retbuf = NULL;
1198 unsigned int ret_data_len = 0;
1200 struct smb_snapshot_array snapshot_in;
1202 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
1203 cfile->fid.volatile_fid,
1204 FSCTL_SRV_ENUMERATE_SNAPSHOTS,
1205 true /* is_fsctl */,
1206 NULL, 0 /* no input data */,
1209 cifs_dbg(FYI, "enum snaphots ioctl returned %d and ret buflen is %d\n",
1214 if (ret_data_len && (ioc_buf != NULL) && (retbuf != NULL)) {
1216 if (copy_from_user(&snapshot_in, ioc_buf,
1217 sizeof(struct smb_snapshot_array))) {
1222 if (snapshot_in.snapshot_array_size < sizeof(struct smb_snapshot_array)) {
1228 if (ret_data_len > snapshot_in.snapshot_array_size)
1229 ret_data_len = snapshot_in.snapshot_array_size;
1231 if (copy_to_user(ioc_buf, retbuf, ret_data_len))
1240 smb2_query_dir_first(const unsigned int xid, struct cifs_tcon *tcon,
1241 const char *path, struct cifs_sb_info *cifs_sb,
1242 struct cifs_fid *fid, __u16 search_flags,
1243 struct cifs_search_info *srch_inf)
1247 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
1248 struct cifs_open_parms oparms;
1250 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
1255 oparms.desired_access = FILE_READ_ATTRIBUTES | FILE_READ_DATA;
1256 oparms.disposition = FILE_OPEN;
1257 oparms.create_options = 0;
1259 oparms.reconnect = false;
1261 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL);
1264 cifs_dbg(FYI, "open dir failed rc=%d\n", rc);
1268 srch_inf->entries_in_buffer = 0;
1269 srch_inf->index_of_last_entry = 0;
1271 rc = SMB2_query_directory(xid, tcon, fid->persistent_fid,
1272 fid->volatile_fid, 0, srch_inf);
1274 cifs_dbg(FYI, "query directory failed rc=%d\n", rc);
1275 SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
1281 smb2_query_dir_next(const unsigned int xid, struct cifs_tcon *tcon,
1282 struct cifs_fid *fid, __u16 search_flags,
1283 struct cifs_search_info *srch_inf)
1285 return SMB2_query_directory(xid, tcon, fid->persistent_fid,
1286 fid->volatile_fid, 0, srch_inf);
1290 smb2_close_dir(const unsigned int xid, struct cifs_tcon *tcon,
1291 struct cifs_fid *fid)
1293 return SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
1297 * If we negotiate SMB2 protocol and get STATUS_PENDING - update
1298 * the number of credits and return true. Otherwise - return false.
1301 smb2_is_status_pending(char *buf, struct TCP_Server_Info *server, int length)
1303 struct smb2_sync_hdr *shdr = get_sync_hdr(buf);
1305 if (shdr->Status != STATUS_PENDING)
1309 spin_lock(&server->req_lock);
1310 server->credits += le16_to_cpu(shdr->CreditRequest);
1311 spin_unlock(&server->req_lock);
1312 wake_up(&server->request_q);
1319 smb2_is_session_expired(char *buf)
1321 struct smb2_sync_hdr *shdr = get_sync_hdr(buf);
1323 if (shdr->Status != STATUS_NETWORK_SESSION_EXPIRED)
1326 cifs_dbg(FYI, "Session expired\n");
1331 smb2_oplock_response(struct cifs_tcon *tcon, struct cifs_fid *fid,
1332 struct cifsInodeInfo *cinode)
1334 if (tcon->ses->server->capabilities & SMB2_GLOBAL_CAP_LEASING)
1335 return SMB2_lease_break(0, tcon, cinode->lease_key,
1336 smb2_get_lease_state(cinode));
1338 return SMB2_oplock_break(0, tcon, fid->persistent_fid,
1340 CIFS_CACHE_READ(cinode) ? 1 : 0);
1344 smb2_queryfs(const unsigned int xid, struct cifs_tcon *tcon,
1345 struct kstatfs *buf)
1348 __le16 srch_path = 0; /* Null - open root of share */
1349 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
1350 struct cifs_open_parms oparms;
1351 struct cifs_fid fid;
1354 oparms.desired_access = FILE_READ_ATTRIBUTES;
1355 oparms.disposition = FILE_OPEN;
1356 oparms.create_options = 0;
1358 oparms.reconnect = false;
1360 rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL);
1363 buf->f_type = SMB2_MAGIC_NUMBER;
1364 rc = SMB2_QFS_info(xid, tcon, fid.persistent_fid, fid.volatile_fid,
1366 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
1371 smb2_compare_fids(struct cifsFileInfo *ob1, struct cifsFileInfo *ob2)
1373 return ob1->fid.persistent_fid == ob2->fid.persistent_fid &&
1374 ob1->fid.volatile_fid == ob2->fid.volatile_fid;
1378 smb2_mand_lock(const unsigned int xid, struct cifsFileInfo *cfile, __u64 offset,
1379 __u64 length, __u32 type, int lock, int unlock, bool wait)
1381 if (unlock && !lock)
1382 type = SMB2_LOCKFLAG_UNLOCK;
1383 return SMB2_lock(xid, tlink_tcon(cfile->tlink),
1384 cfile->fid.persistent_fid, cfile->fid.volatile_fid,
1385 current->tgid, length, offset, type, wait);
1389 smb2_get_lease_key(struct inode *inode, struct cifs_fid *fid)
1391 memcpy(fid->lease_key, CIFS_I(inode)->lease_key, SMB2_LEASE_KEY_SIZE);
1395 smb2_set_lease_key(struct inode *inode, struct cifs_fid *fid)
1397 memcpy(CIFS_I(inode)->lease_key, fid->lease_key, SMB2_LEASE_KEY_SIZE);
1401 smb2_new_lease_key(struct cifs_fid *fid)
1403 generate_random_uuid(fid->lease_key);
1407 smb2_get_dfs_refer(const unsigned int xid, struct cifs_ses *ses,
1408 const char *search_name,
1409 struct dfs_info3_param **target_nodes,
1410 unsigned int *num_of_nodes,
1411 const struct nls_table *nls_codepage, int remap)
1414 __le16 *utf16_path = NULL;
1415 int utf16_path_len = 0;
1416 struct cifs_tcon *tcon;
1417 struct fsctl_get_dfs_referral_req *dfs_req = NULL;
1418 struct get_dfs_referral_rsp *dfs_rsp = NULL;
1419 u32 dfs_req_size = 0, dfs_rsp_size = 0;
1421 cifs_dbg(FYI, "smb2_get_dfs_refer path <%s>\n", search_name);
1424 * Try to use the IPC tcon, otherwise just use any
1426 tcon = ses->tcon_ipc;
1428 spin_lock(&cifs_tcp_ses_lock);
1429 tcon = list_first_entry_or_null(&ses->tcon_list,
1434 spin_unlock(&cifs_tcp_ses_lock);
1438 cifs_dbg(VFS, "session %p has no tcon available for a dfs referral request\n",
1444 utf16_path = cifs_strndup_to_utf16(search_name, PATH_MAX,
1446 nls_codepage, remap);
1452 dfs_req_size = sizeof(*dfs_req) + utf16_path_len;
1453 dfs_req = kzalloc(dfs_req_size, GFP_KERNEL);
1459 /* Highest DFS referral version understood */
1460 dfs_req->MaxReferralLevel = DFS_VERSION;
1462 /* Path to resolve in an UTF-16 null-terminated string */
1463 memcpy(dfs_req->RequestFileName, utf16_path, utf16_path_len);
1466 rc = SMB2_ioctl(xid, tcon, NO_FILE_ID, NO_FILE_ID,
1467 FSCTL_DFS_GET_REFERRALS,
1468 true /* is_fsctl */,
1469 (char *)dfs_req, dfs_req_size,
1470 (char **)&dfs_rsp, &dfs_rsp_size);
1471 } while (rc == -EAGAIN);
1474 if ((rc != -ENOENT) && (rc != -EOPNOTSUPP))
1475 cifs_dbg(VFS, "ioctl error in smb2_get_dfs_refer rc=%d\n", rc);
1479 rc = parse_dfs_referrals(dfs_rsp, dfs_rsp_size,
1480 num_of_nodes, target_nodes,
1481 nls_codepage, remap, search_name,
1482 true /* is_unicode */);
1484 cifs_dbg(VFS, "parse error in smb2_get_dfs_refer rc=%d\n", rc);
1489 if (tcon && !tcon->ipc) {
1490 /* ipc tcons are not refcounted */
1491 spin_lock(&cifs_tcp_ses_lock);
1493 spin_unlock(&cifs_tcp_ses_lock);
1500 #define SMB2_SYMLINK_STRUCT_SIZE \
1501 (sizeof(struct smb2_err_rsp) - 1 + sizeof(struct smb2_symlink_err_rsp))
1504 smb2_query_symlink(const unsigned int xid, struct cifs_tcon *tcon,
1505 const char *full_path, char **target_path,
1506 struct cifs_sb_info *cifs_sb)
1510 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
1511 struct cifs_open_parms oparms;
1512 struct cifs_fid fid;
1513 struct kvec err_iov = {NULL, 0};
1514 struct smb2_err_rsp *err_buf;
1515 struct smb2_symlink_err_rsp *symlink;
1516 unsigned int sub_len;
1517 unsigned int sub_offset;
1518 unsigned int print_len;
1519 unsigned int print_offset;
1520 struct cifs_ses *ses = tcon->ses;
1521 struct TCP_Server_Info *server = ses->server;
1523 cifs_dbg(FYI, "%s: path: %s\n", __func__, full_path);
1525 utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb);
1530 oparms.desired_access = FILE_READ_ATTRIBUTES;
1531 oparms.disposition = FILE_OPEN;
1532 oparms.create_options = 0;
1534 oparms.reconnect = false;
1536 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, &err_iov);
1538 if (!rc || !err_iov.iov_base) {
1543 err_buf = err_iov.iov_base;
1544 if (le32_to_cpu(err_buf->ByteCount) < sizeof(struct smb2_symlink_err_rsp) ||
1545 err_iov.iov_len + server->vals->header_preamble_size < SMB2_SYMLINK_STRUCT_SIZE) {
1550 /* open must fail on symlink - reset rc */
1552 symlink = (struct smb2_symlink_err_rsp *)err_buf->ErrorData;
1553 sub_len = le16_to_cpu(symlink->SubstituteNameLength);
1554 sub_offset = le16_to_cpu(symlink->SubstituteNameOffset);
1555 print_len = le16_to_cpu(symlink->PrintNameLength);
1556 print_offset = le16_to_cpu(symlink->PrintNameOffset);
1558 if (err_iov.iov_len + server->vals->header_preamble_size <
1559 SMB2_SYMLINK_STRUCT_SIZE + sub_offset + sub_len) {
1564 if (err_iov.iov_len + server->vals->header_preamble_size <
1565 SMB2_SYMLINK_STRUCT_SIZE + print_offset + print_len) {
1570 *target_path = cifs_strndup_from_utf16(
1571 (char *)symlink->PathBuffer + sub_offset,
1572 sub_len, true, cifs_sb->local_nls);
1573 if (!(*target_path)) {
1577 convert_delimiter(*target_path, '/');
1578 cifs_dbg(FYI, "%s: target path: %s\n", __func__, *target_path);
1583 #ifdef CONFIG_CIFS_ACL
1584 static struct cifs_ntsd *
1585 get_smb2_acl_by_fid(struct cifs_sb_info *cifs_sb,
1586 const struct cifs_fid *cifsfid, u32 *pacllen)
1588 struct cifs_ntsd *pntsd = NULL;
1590 int rc = -EOPNOTSUPP;
1591 struct tcon_link *tlink = cifs_sb_tlink(cifs_sb);
1594 return ERR_CAST(tlink);
1597 cifs_dbg(FYI, "trying to get acl\n");
1599 rc = SMB2_query_acl(xid, tlink_tcon(tlink), cifsfid->persistent_fid,
1600 cifsfid->volatile_fid, (void **)&pntsd, pacllen);
1603 cifs_put_tlink(tlink);
1605 cifs_dbg(FYI, "%s: rc = %d ACL len %d\n", __func__, rc, *pacllen);
1612 static struct cifs_ntsd *
1613 get_smb2_acl_by_path(struct cifs_sb_info *cifs_sb,
1614 const char *path, u32 *pacllen)
1616 struct cifs_ntsd *pntsd = NULL;
1617 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
1620 struct cifs_tcon *tcon;
1621 struct tcon_link *tlink = cifs_sb_tlink(cifs_sb);
1622 struct cifs_fid fid;
1623 struct cifs_open_parms oparms;
1626 cifs_dbg(FYI, "get smb3 acl for path %s\n", path);
1628 return ERR_CAST(tlink);
1630 tcon = tlink_tcon(tlink);
1633 if (backup_cred(cifs_sb))
1634 oparms.create_options = CREATE_OPEN_BACKUP_INTENT;
1636 oparms.create_options = 0;
1638 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
1640 return ERR_PTR(-ENOMEM);
1643 oparms.desired_access = READ_CONTROL;
1644 oparms.disposition = FILE_OPEN;
1646 oparms.reconnect = false;
1648 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL);
1651 rc = SMB2_query_acl(xid, tlink_tcon(tlink), fid.persistent_fid,
1652 fid.volatile_fid, (void **)&pntsd, pacllen);
1653 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
1656 cifs_put_tlink(tlink);
1659 cifs_dbg(FYI, "%s: rc = %d ACL len %d\n", __func__, rc, *pacllen);
1665 #ifdef CONFIG_CIFS_ACL
1667 set_smb2_acl(struct cifs_ntsd *pnntsd, __u32 acllen,
1668 struct inode *inode, const char *path, int aclflag)
1670 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
1672 int rc, access_flags = 0;
1673 struct cifs_tcon *tcon;
1674 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
1675 struct tcon_link *tlink = cifs_sb_tlink(cifs_sb);
1676 struct cifs_fid fid;
1677 struct cifs_open_parms oparms;
1680 cifs_dbg(FYI, "set smb3 acl for path %s\n", path);
1682 return PTR_ERR(tlink);
1684 tcon = tlink_tcon(tlink);
1687 if (backup_cred(cifs_sb))
1688 oparms.create_options = CREATE_OPEN_BACKUP_INTENT;
1690 oparms.create_options = 0;
1692 if (aclflag == CIFS_ACL_OWNER || aclflag == CIFS_ACL_GROUP)
1693 access_flags = WRITE_OWNER;
1695 access_flags = WRITE_DAC;
1697 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
1702 oparms.desired_access = access_flags;
1703 oparms.disposition = FILE_OPEN;
1706 oparms.reconnect = false;
1708 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL);
1711 rc = SMB2_set_acl(xid, tlink_tcon(tlink), fid.persistent_fid,
1712 fid.volatile_fid, pnntsd, acllen, aclflag);
1713 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
1716 cifs_put_tlink(tlink);
1720 #endif /* CIFS_ACL */
1722 /* Retrieve an ACL from the server */
1723 static struct cifs_ntsd *
1724 get_smb2_acl(struct cifs_sb_info *cifs_sb,
1725 struct inode *inode, const char *path,
1728 struct cifs_ntsd *pntsd = NULL;
1729 struct cifsFileInfo *open_file = NULL;
1732 open_file = find_readable_file(CIFS_I(inode), true);
1734 return get_smb2_acl_by_path(cifs_sb, path, pacllen);
1736 pntsd = get_smb2_acl_by_fid(cifs_sb, &open_file->fid, pacllen);
1737 cifsFileInfo_put(open_file);
1742 static long smb3_zero_range(struct file *file, struct cifs_tcon *tcon,
1743 loff_t offset, loff_t len, bool keep_size)
1745 struct inode *inode;
1746 struct cifsInodeInfo *cifsi;
1747 struct cifsFileInfo *cfile = file->private_data;
1748 struct file_zero_data_information fsctl_buf;
1754 inode = d_inode(cfile->dentry);
1755 cifsi = CIFS_I(inode);
1757 /* if file not oplocked can't be sure whether asking to extend size */
1758 if (!CIFS_CACHE_READ(cifsi))
1759 if (keep_size == false)
1763 * Must check if file sparse since fallocate -z (zero range) assumes
1764 * non-sparse allocation
1766 if (!(cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE))
1770 * need to make sure we are not asked to extend the file since the SMB3
1771 * fsctl does not change the file size. In the future we could change
1772 * this to zero the first part of the range then set the file size
1773 * which for a non sparse file would zero the newly extended range
1775 if (keep_size == false)
1776 if (i_size_read(inode) < offset + len)
1779 cifs_dbg(FYI, "offset %lld len %lld", offset, len);
1781 fsctl_buf.FileOffset = cpu_to_le64(offset);
1782 fsctl_buf.BeyondFinalZero = cpu_to_le64(offset + len);
1784 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
1785 cfile->fid.volatile_fid, FSCTL_SET_ZERO_DATA,
1786 true /* is_fctl */, (char *)&fsctl_buf,
1787 sizeof(struct file_zero_data_information), NULL, NULL);
1792 static long smb3_punch_hole(struct file *file, struct cifs_tcon *tcon,
1793 loff_t offset, loff_t len)
1795 struct inode *inode;
1796 struct cifsInodeInfo *cifsi;
1797 struct cifsFileInfo *cfile = file->private_data;
1798 struct file_zero_data_information fsctl_buf;
1801 __u8 set_sparse = 1;
1805 inode = d_inode(cfile->dentry);
1806 cifsi = CIFS_I(inode);
1808 /* Need to make file sparse, if not already, before freeing range. */
1809 /* Consider adding equivalent for compressed since it could also work */
1810 if (!smb2_set_sparse(xid, tcon, cfile, inode, set_sparse))
1813 cifs_dbg(FYI, "offset %lld len %lld", offset, len);
1815 fsctl_buf.FileOffset = cpu_to_le64(offset);
1816 fsctl_buf.BeyondFinalZero = cpu_to_le64(offset + len);
1818 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
1819 cfile->fid.volatile_fid, FSCTL_SET_ZERO_DATA,
1820 true /* is_fctl */, (char *)&fsctl_buf,
1821 sizeof(struct file_zero_data_information), NULL, NULL);
1826 static long smb3_simple_falloc(struct file *file, struct cifs_tcon *tcon,
1827 loff_t off, loff_t len, bool keep_size)
1829 struct inode *inode;
1830 struct cifsInodeInfo *cifsi;
1831 struct cifsFileInfo *cfile = file->private_data;
1832 long rc = -EOPNOTSUPP;
1837 inode = d_inode(cfile->dentry);
1838 cifsi = CIFS_I(inode);
1840 /* if file not oplocked can't be sure whether asking to extend size */
1841 if (!CIFS_CACHE_READ(cifsi))
1842 if (keep_size == false)
1846 * Files are non-sparse by default so falloc may be a no-op
1847 * Must check if file sparse. If not sparse, and not extending
1848 * then no need to do anything since file already allocated
1850 if ((cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) == 0) {
1851 if (keep_size == true)
1853 /* check if extending file */
1854 else if (i_size_read(inode) >= off + len)
1855 /* not extending file and already not sparse */
1857 /* BB: in future add else clause to extend file */
1862 if ((keep_size == true) || (i_size_read(inode) >= off + len)) {
1864 * Check if falloc starts within first few pages of file
1865 * and ends within a few pages of the end of file to
1866 * ensure that most of file is being forced to be
1867 * fallocated now. If so then setting whole file sparse
1868 * ie potentially making a few extra pages at the beginning
1869 * or end of the file non-sparse via set_sparse is harmless.
1871 if ((off > 8192) || (off + len + 8192 < i_size_read(inode)))
1874 rc = smb2_set_sparse(xid, tcon, cfile, inode, false);
1876 /* BB: else ... in future add code to extend file and set sparse */
1884 static long smb3_fallocate(struct file *file, struct cifs_tcon *tcon, int mode,
1885 loff_t off, loff_t len)
1887 /* KEEP_SIZE already checked for by do_fallocate */
1888 if (mode & FALLOC_FL_PUNCH_HOLE)
1889 return smb3_punch_hole(file, tcon, off, len);
1890 else if (mode & FALLOC_FL_ZERO_RANGE) {
1891 if (mode & FALLOC_FL_KEEP_SIZE)
1892 return smb3_zero_range(file, tcon, off, len, true);
1893 return smb3_zero_range(file, tcon, off, len, false);
1894 } else if (mode == FALLOC_FL_KEEP_SIZE)
1895 return smb3_simple_falloc(file, tcon, off, len, true);
1897 return smb3_simple_falloc(file, tcon, off, len, false);
1903 smb2_downgrade_oplock(struct TCP_Server_Info *server,
1904 struct cifsInodeInfo *cinode, bool set_level2)
1907 server->ops->set_oplock_level(cinode, SMB2_OPLOCK_LEVEL_II,
1910 server->ops->set_oplock_level(cinode, 0, 0, NULL);
1914 smb2_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
1915 unsigned int epoch, bool *purge_cache)
1918 if (oplock == SMB2_OPLOCK_LEVEL_NOCHANGE)
1920 if (oplock == SMB2_OPLOCK_LEVEL_BATCH) {
1921 cinode->oplock = CIFS_CACHE_RHW_FLG;
1922 cifs_dbg(FYI, "Batch Oplock granted on inode %p\n",
1923 &cinode->vfs_inode);
1924 } else if (oplock == SMB2_OPLOCK_LEVEL_EXCLUSIVE) {
1925 cinode->oplock = CIFS_CACHE_RW_FLG;
1926 cifs_dbg(FYI, "Exclusive Oplock granted on inode %p\n",
1927 &cinode->vfs_inode);
1928 } else if (oplock == SMB2_OPLOCK_LEVEL_II) {
1929 cinode->oplock = CIFS_CACHE_READ_FLG;
1930 cifs_dbg(FYI, "Level II Oplock granted on inode %p\n",
1931 &cinode->vfs_inode);
1937 smb21_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
1938 unsigned int epoch, bool *purge_cache)
1940 char message[5] = {0};
1943 if (oplock == SMB2_OPLOCK_LEVEL_NOCHANGE)
1947 if (oplock & SMB2_LEASE_READ_CACHING_HE) {
1948 cinode->oplock |= CIFS_CACHE_READ_FLG;
1949 strcat(message, "R");
1951 if (oplock & SMB2_LEASE_HANDLE_CACHING_HE) {
1952 cinode->oplock |= CIFS_CACHE_HANDLE_FLG;
1953 strcat(message, "H");
1955 if (oplock & SMB2_LEASE_WRITE_CACHING_HE) {
1956 cinode->oplock |= CIFS_CACHE_WRITE_FLG;
1957 strcat(message, "W");
1959 if (!cinode->oplock)
1960 strcat(message, "None");
1961 cifs_dbg(FYI, "%s Lease granted on inode %p\n", message,
1962 &cinode->vfs_inode);
1966 smb3_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
1967 unsigned int epoch, bool *purge_cache)
1969 unsigned int old_oplock = cinode->oplock;
1971 smb21_set_oplock_level(cinode, oplock, epoch, purge_cache);
1974 *purge_cache = false;
1975 if (old_oplock == CIFS_CACHE_READ_FLG) {
1976 if (cinode->oplock == CIFS_CACHE_READ_FLG &&
1977 (epoch - cinode->epoch > 0))
1978 *purge_cache = true;
1979 else if (cinode->oplock == CIFS_CACHE_RH_FLG &&
1980 (epoch - cinode->epoch > 1))
1981 *purge_cache = true;
1982 else if (cinode->oplock == CIFS_CACHE_RHW_FLG &&
1983 (epoch - cinode->epoch > 1))
1984 *purge_cache = true;
1985 else if (cinode->oplock == 0 &&
1986 (epoch - cinode->epoch > 0))
1987 *purge_cache = true;
1988 } else if (old_oplock == CIFS_CACHE_RH_FLG) {
1989 if (cinode->oplock == CIFS_CACHE_RH_FLG &&
1990 (epoch - cinode->epoch > 0))
1991 *purge_cache = true;
1992 else if (cinode->oplock == CIFS_CACHE_RHW_FLG &&
1993 (epoch - cinode->epoch > 1))
1994 *purge_cache = true;
1996 cinode->epoch = epoch;
2001 smb2_is_read_op(__u32 oplock)
2003 return oplock == SMB2_OPLOCK_LEVEL_II;
2007 smb21_is_read_op(__u32 oplock)
2009 return (oplock & SMB2_LEASE_READ_CACHING_HE) &&
2010 !(oplock & SMB2_LEASE_WRITE_CACHING_HE);
2014 map_oplock_to_lease(u8 oplock)
2016 if (oplock == SMB2_OPLOCK_LEVEL_EXCLUSIVE)
2017 return SMB2_LEASE_WRITE_CACHING | SMB2_LEASE_READ_CACHING;
2018 else if (oplock == SMB2_OPLOCK_LEVEL_II)
2019 return SMB2_LEASE_READ_CACHING;
2020 else if (oplock == SMB2_OPLOCK_LEVEL_BATCH)
2021 return SMB2_LEASE_HANDLE_CACHING | SMB2_LEASE_READ_CACHING |
2022 SMB2_LEASE_WRITE_CACHING;
2027 smb2_create_lease_buf(u8 *lease_key, u8 oplock)
2029 struct create_lease *buf;
2031 buf = kzalloc(sizeof(struct create_lease), GFP_KERNEL);
2035 buf->lcontext.LeaseKeyLow = cpu_to_le64(*((u64 *)lease_key));
2036 buf->lcontext.LeaseKeyHigh = cpu_to_le64(*((u64 *)(lease_key + 8)));
2037 buf->lcontext.LeaseState = map_oplock_to_lease(oplock);
2039 buf->ccontext.DataOffset = cpu_to_le16(offsetof
2040 (struct create_lease, lcontext));
2041 buf->ccontext.DataLength = cpu_to_le32(sizeof(struct lease_context));
2042 buf->ccontext.NameOffset = cpu_to_le16(offsetof
2043 (struct create_lease, Name));
2044 buf->ccontext.NameLength = cpu_to_le16(4);
2045 /* SMB2_CREATE_REQUEST_LEASE is "RqLs" */
2054 smb3_create_lease_buf(u8 *lease_key, u8 oplock)
2056 struct create_lease_v2 *buf;
2058 buf = kzalloc(sizeof(struct create_lease_v2), GFP_KERNEL);
2062 buf->lcontext.LeaseKeyLow = cpu_to_le64(*((u64 *)lease_key));
2063 buf->lcontext.LeaseKeyHigh = cpu_to_le64(*((u64 *)(lease_key + 8)));
2064 buf->lcontext.LeaseState = map_oplock_to_lease(oplock);
2066 buf->ccontext.DataOffset = cpu_to_le16(offsetof
2067 (struct create_lease_v2, lcontext));
2068 buf->ccontext.DataLength = cpu_to_le32(sizeof(struct lease_context_v2));
2069 buf->ccontext.NameOffset = cpu_to_le16(offsetof
2070 (struct create_lease_v2, Name));
2071 buf->ccontext.NameLength = cpu_to_le16(4);
2072 /* SMB2_CREATE_REQUEST_LEASE is "RqLs" */
2081 smb2_parse_lease_buf(void *buf, unsigned int *epoch)
2083 struct create_lease *lc = (struct create_lease *)buf;
2085 *epoch = 0; /* not used */
2086 if (lc->lcontext.LeaseFlags & SMB2_LEASE_FLAG_BREAK_IN_PROGRESS)
2087 return SMB2_OPLOCK_LEVEL_NOCHANGE;
2088 return le32_to_cpu(lc->lcontext.LeaseState);
2092 smb3_parse_lease_buf(void *buf, unsigned int *epoch)
2094 struct create_lease_v2 *lc = (struct create_lease_v2 *)buf;
2096 *epoch = le16_to_cpu(lc->lcontext.Epoch);
2097 if (lc->lcontext.LeaseFlags & SMB2_LEASE_FLAG_BREAK_IN_PROGRESS)
2098 return SMB2_OPLOCK_LEVEL_NOCHANGE;
2099 return le32_to_cpu(lc->lcontext.LeaseState);
2103 smb2_wp_retry_size(struct inode *inode)
2105 return min_t(unsigned int, CIFS_SB(inode->i_sb)->wsize,
2106 SMB2_MAX_BUFFER_SIZE);
2110 smb2_dir_needs_close(struct cifsFileInfo *cfile)
2112 return !cfile->invalidHandle;
2116 fill_transform_hdr(struct TCP_Server_Info *server,
2117 struct smb2_transform_hdr *tr_hdr, struct smb_rqst *old_rq)
2119 struct smb2_sync_hdr *shdr =
2120 (struct smb2_sync_hdr *)old_rq->rq_iov[1].iov_base;
2121 unsigned int orig_len = get_rfc1002_length(old_rq->rq_iov[0].iov_base);
2123 memset(tr_hdr, 0, sizeof(struct smb2_transform_hdr));
2124 tr_hdr->ProtocolId = SMB2_TRANSFORM_PROTO_NUM;
2125 tr_hdr->OriginalMessageSize = cpu_to_le32(orig_len);
2126 tr_hdr->Flags = cpu_to_le16(0x01);
2127 get_random_bytes(&tr_hdr->Nonce, SMB3_AES128CMM_NONCE);
2128 memcpy(&tr_hdr->SessionId, &shdr->SessionId, 8);
2129 inc_rfc1001_len(tr_hdr, sizeof(struct smb2_transform_hdr) - server->vals->header_preamble_size);
2130 inc_rfc1001_len(tr_hdr, orig_len);
2133 /* We can not use the normal sg_set_buf() as we will sometimes pass a
2134 * stack object as buf.
2136 static inline void smb2_sg_set_buf(struct scatterlist *sg, const void *buf,
2137 unsigned int buflen)
2139 sg_set_page(sg, virt_to_page(buf), buflen, offset_in_page(buf));
2142 static struct scatterlist *
2143 init_sg(struct smb_rqst *rqst, u8 *sign)
2145 unsigned int sg_len = rqst->rq_nvec + rqst->rq_npages + 1;
2146 unsigned int assoc_data_len = sizeof(struct smb2_transform_hdr) - 24;
2147 struct scatterlist *sg;
2151 sg = kmalloc_array(sg_len, sizeof(struct scatterlist), GFP_KERNEL);
2155 sg_init_table(sg, sg_len);
2156 smb2_sg_set_buf(&sg[0], rqst->rq_iov[0].iov_base + 24, assoc_data_len);
2157 for (i = 1; i < rqst->rq_nvec; i++)
2158 smb2_sg_set_buf(&sg[i], rqst->rq_iov[i].iov_base,
2159 rqst->rq_iov[i].iov_len);
2160 for (j = 0; i < sg_len - 1; i++, j++) {
2161 unsigned int len = (j < rqst->rq_npages - 1) ? rqst->rq_pagesz
2163 sg_set_page(&sg[i], rqst->rq_pages[j], len, 0);
2165 smb2_sg_set_buf(&sg[sg_len - 1], sign, SMB2_SIGNATURE_SIZE);
2170 smb2_get_enc_key(struct TCP_Server_Info *server, __u64 ses_id, int enc, u8 *key)
2172 struct cifs_ses *ses;
2175 spin_lock(&cifs_tcp_ses_lock);
2176 list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) {
2177 if (ses->Suid != ses_id)
2179 ses_enc_key = enc ? ses->smb3encryptionkey :
2180 ses->smb3decryptionkey;
2181 memcpy(key, ses_enc_key, SMB3_SIGN_KEY_SIZE);
2182 spin_unlock(&cifs_tcp_ses_lock);
2185 spin_unlock(&cifs_tcp_ses_lock);
2190 * Encrypt or decrypt @rqst message. @rqst has the following format:
2191 * iov[0] - transform header (associate data),
2192 * iov[1-N] and pages - data to encrypt.
2193 * On success return encrypted data in iov[1-N] and pages, leave iov[0]
2197 crypt_message(struct TCP_Server_Info *server, struct smb_rqst *rqst, int enc)
2199 struct smb2_transform_hdr *tr_hdr =
2200 (struct smb2_transform_hdr *)rqst->rq_iov[0].iov_base;
2201 unsigned int assoc_data_len = sizeof(struct smb2_transform_hdr) - 20 - server->vals->header_preamble_size;
2203 struct scatterlist *sg;
2204 u8 sign[SMB2_SIGNATURE_SIZE] = {};
2205 u8 key[SMB3_SIGN_KEY_SIZE];
2206 struct aead_request *req;
2208 unsigned int iv_len;
2209 DECLARE_CRYPTO_WAIT(wait);
2210 struct crypto_aead *tfm;
2211 unsigned int crypt_len = le32_to_cpu(tr_hdr->OriginalMessageSize);
2213 rc = smb2_get_enc_key(server, tr_hdr->SessionId, enc, key);
2215 cifs_dbg(VFS, "%s: Could not get %scryption key\n", __func__,
2220 rc = smb3_crypto_aead_allocate(server);
2222 cifs_dbg(VFS, "%s: crypto alloc failed\n", __func__);
2226 tfm = enc ? server->secmech.ccmaesencrypt :
2227 server->secmech.ccmaesdecrypt;
2228 rc = crypto_aead_setkey(tfm, key, SMB3_SIGN_KEY_SIZE);
2230 cifs_dbg(VFS, "%s: Failed to set aead key %d\n", __func__, rc);
2234 rc = crypto_aead_setauthsize(tfm, SMB2_SIGNATURE_SIZE);
2236 cifs_dbg(VFS, "%s: Failed to set authsize %d\n", __func__, rc);
2240 req = aead_request_alloc(tfm, GFP_KERNEL);
2242 cifs_dbg(VFS, "%s: Failed to alloc aead request", __func__);
2247 memcpy(sign, &tr_hdr->Signature, SMB2_SIGNATURE_SIZE);
2248 crypt_len += SMB2_SIGNATURE_SIZE;
2251 sg = init_sg(rqst, sign);
2253 cifs_dbg(VFS, "%s: Failed to init sg", __func__);
2258 iv_len = crypto_aead_ivsize(tfm);
2259 iv = kzalloc(iv_len, GFP_KERNEL);
2261 cifs_dbg(VFS, "%s: Failed to alloc IV", __func__);
2266 memcpy(iv + 1, (char *)tr_hdr->Nonce, SMB3_AES128CMM_NONCE);
2268 aead_request_set_crypt(req, sg, sg, crypt_len, iv);
2269 aead_request_set_ad(req, assoc_data_len);
2271 aead_request_set_callback(req, CRYPTO_TFM_REQ_MAY_BACKLOG,
2272 crypto_req_done, &wait);
2274 rc = crypto_wait_req(enc ? crypto_aead_encrypt(req)
2275 : crypto_aead_decrypt(req), &wait);
2278 memcpy(&tr_hdr->Signature, sign, SMB2_SIGNATURE_SIZE);
2289 smb3_init_transform_rq(struct TCP_Server_Info *server, struct smb_rqst *new_rq,
2290 struct smb_rqst *old_rq)
2293 struct page **pages;
2294 struct smb2_transform_hdr *tr_hdr;
2295 unsigned int npages = old_rq->rq_npages;
2299 pages = kmalloc_array(npages, sizeof(struct page *), GFP_KERNEL);
2303 new_rq->rq_pages = pages;
2304 new_rq->rq_npages = old_rq->rq_npages;
2305 new_rq->rq_pagesz = old_rq->rq_pagesz;
2306 new_rq->rq_tailsz = old_rq->rq_tailsz;
2308 for (i = 0; i < npages; i++) {
2309 pages[i] = alloc_page(GFP_KERNEL|__GFP_HIGHMEM);
2311 goto err_free_pages;
2314 iov = kmalloc_array(old_rq->rq_nvec, sizeof(struct kvec), GFP_KERNEL);
2316 goto err_free_pages;
2318 /* copy all iovs from the old except the 1st one (rfc1002 length) */
2319 memcpy(&iov[1], &old_rq->rq_iov[1],
2320 sizeof(struct kvec) * (old_rq->rq_nvec - 1));
2321 new_rq->rq_iov = iov;
2322 new_rq->rq_nvec = old_rq->rq_nvec;
2324 tr_hdr = kmalloc(sizeof(struct smb2_transform_hdr), GFP_KERNEL);
2328 /* fill the 1st iov with a transform header */
2329 fill_transform_hdr(server, tr_hdr, old_rq);
2330 new_rq->rq_iov[0].iov_base = tr_hdr;
2331 new_rq->rq_iov[0].iov_len = sizeof(struct smb2_transform_hdr);
2333 /* copy pages form the old */
2334 for (i = 0; i < npages; i++) {
2335 char *dst = kmap(new_rq->rq_pages[i]);
2336 char *src = kmap(old_rq->rq_pages[i]);
2337 unsigned int len = (i < npages - 1) ? new_rq->rq_pagesz :
2339 memcpy(dst, src, len);
2340 kunmap(new_rq->rq_pages[i]);
2341 kunmap(old_rq->rq_pages[i]);
2344 rc = crypt_message(server, new_rq, 1);
2345 cifs_dbg(FYI, "encrypt message returned %d", rc);
2347 goto err_free_tr_hdr;
2356 for (i = i - 1; i >= 0; i--)
2363 smb3_free_transform_rq(struct smb_rqst *rqst)
2365 int i = rqst->rq_npages - 1;
2368 put_page(rqst->rq_pages[i]);
2369 kfree(rqst->rq_pages);
2370 /* free transform header */
2371 kfree(rqst->rq_iov[0].iov_base);
2372 kfree(rqst->rq_iov);
2376 smb3_is_transform_hdr(void *buf)
2378 struct smb2_transform_hdr *trhdr = buf;
2380 return trhdr->ProtocolId == SMB2_TRANSFORM_PROTO_NUM;
2384 decrypt_raw_data(struct TCP_Server_Info *server, char *buf,
2385 unsigned int buf_data_size, struct page **pages,
2386 unsigned int npages, unsigned int page_data_size)
2389 struct smb_rqst rqst = {NULL};
2390 struct smb2_hdr *hdr;
2393 iov[0].iov_base = buf;
2394 iov[0].iov_len = sizeof(struct smb2_transform_hdr);
2395 iov[1].iov_base = buf + sizeof(struct smb2_transform_hdr);
2396 iov[1].iov_len = buf_data_size;
2400 rqst.rq_pages = pages;
2401 rqst.rq_npages = npages;
2402 rqst.rq_pagesz = PAGE_SIZE;
2403 rqst.rq_tailsz = (page_data_size % PAGE_SIZE) ? : PAGE_SIZE;
2405 rc = crypt_message(server, &rqst, 0);
2406 cifs_dbg(FYI, "decrypt message returned %d\n", rc);
2411 memmove(buf + server->vals->header_preamble_size, iov[1].iov_base, buf_data_size);
2412 hdr = (struct smb2_hdr *)buf;
2413 hdr->smb2_buf_length = cpu_to_be32(buf_data_size + page_data_size);
2414 server->total_read = buf_data_size + page_data_size + server->vals->header_preamble_size;
2420 read_data_into_pages(struct TCP_Server_Info *server, struct page **pages,
2421 unsigned int npages, unsigned int len)
2426 for (i = 0; i < npages; i++) {
2427 struct page *page = pages[i];
2431 if (len >= PAGE_SIZE) {
2432 /* enough data to fill the page */
2436 zero_user(page, len, PAGE_SIZE - len);
2439 length = cifs_read_page_from_socket(server, page, n);
2442 server->total_read += length;
2449 init_read_bvec(struct page **pages, unsigned int npages, unsigned int data_size,
2450 unsigned int cur_off, struct bio_vec **page_vec)
2452 struct bio_vec *bvec;
2455 bvec = kcalloc(npages, sizeof(struct bio_vec), GFP_KERNEL);
2459 for (i = 0; i < npages; i++) {
2460 bvec[i].bv_page = pages[i];
2461 bvec[i].bv_offset = (i == 0) ? cur_off : 0;
2462 bvec[i].bv_len = min_t(unsigned int, PAGE_SIZE, data_size);
2463 data_size -= bvec[i].bv_len;
2466 if (data_size != 0) {
2467 cifs_dbg(VFS, "%s: something went wrong\n", __func__);
2477 handle_read_data(struct TCP_Server_Info *server, struct mid_q_entry *mid,
2478 char *buf, unsigned int buf_len, struct page **pages,
2479 unsigned int npages, unsigned int page_data_size)
2481 unsigned int data_offset;
2482 unsigned int data_len;
2483 unsigned int cur_off;
2484 unsigned int cur_page_idx;
2485 unsigned int pad_len;
2486 struct cifs_readdata *rdata = mid->callback_data;
2487 struct smb2_sync_hdr *shdr = get_sync_hdr(buf);
2488 struct bio_vec *bvec = NULL;
2489 struct iov_iter iter;
2492 bool use_rdma_mr = false;
2494 if (shdr->Command != SMB2_READ) {
2495 cifs_dbg(VFS, "only big read responses are supported\n");
2499 if (server->ops->is_session_expired &&
2500 server->ops->is_session_expired(buf)) {
2501 cifs_reconnect(server);
2502 wake_up(&server->response_q);
2506 if (server->ops->is_status_pending &&
2507 server->ops->is_status_pending(buf, server, 0))
2510 rdata->result = server->ops->map_error(buf, false);
2511 if (rdata->result != 0) {
2512 cifs_dbg(FYI, "%s: server returned error %d\n",
2513 __func__, rdata->result);
2514 dequeue_mid(mid, rdata->result);
2518 data_offset = server->ops->read_data_offset(buf) + server->vals->header_preamble_size;
2519 #ifdef CONFIG_CIFS_SMB_DIRECT
2520 use_rdma_mr = rdata->mr;
2522 data_len = server->ops->read_data_length(buf, use_rdma_mr);
2524 if (data_offset < server->vals->read_rsp_size) {
2526 * win2k8 sometimes sends an offset of 0 when the read
2527 * is beyond the EOF. Treat it as if the data starts just after
2530 cifs_dbg(FYI, "%s: data offset (%u) inside read response header\n",
2531 __func__, data_offset);
2532 data_offset = server->vals->read_rsp_size;
2533 } else if (data_offset > MAX_CIFS_SMALL_BUFFER_SIZE) {
2534 /* data_offset is beyond the end of smallbuf */
2535 cifs_dbg(FYI, "%s: data offset (%u) beyond end of smallbuf\n",
2536 __func__, data_offset);
2537 rdata->result = -EIO;
2538 dequeue_mid(mid, rdata->result);
2542 pad_len = data_offset - server->vals->read_rsp_size;
2544 if (buf_len <= data_offset) {
2545 /* read response payload is in pages */
2546 cur_page_idx = pad_len / PAGE_SIZE;
2547 cur_off = pad_len % PAGE_SIZE;
2549 if (cur_page_idx != 0) {
2550 /* data offset is beyond the 1st page of response */
2551 cifs_dbg(FYI, "%s: data offset (%u) beyond 1st page of response\n",
2552 __func__, data_offset);
2553 rdata->result = -EIO;
2554 dequeue_mid(mid, rdata->result);
2558 if (data_len > page_data_size - pad_len) {
2559 /* data_len is corrupt -- discard frame */
2560 rdata->result = -EIO;
2561 dequeue_mid(mid, rdata->result);
2565 rdata->result = init_read_bvec(pages, npages, page_data_size,
2567 if (rdata->result != 0) {
2568 dequeue_mid(mid, rdata->result);
2572 iov_iter_bvec(&iter, WRITE | ITER_BVEC, bvec, npages, data_len);
2573 } else if (buf_len >= data_offset + data_len) {
2574 /* read response payload is in buf */
2575 WARN_ONCE(npages > 0, "read data can be either in buf or in pages");
2576 iov.iov_base = buf + data_offset;
2577 iov.iov_len = data_len;
2578 iov_iter_kvec(&iter, WRITE | ITER_KVEC, &iov, 1, data_len);
2580 /* read response payload cannot be in both buf and pages */
2581 WARN_ONCE(1, "buf can not contain only a part of read data");
2582 rdata->result = -EIO;
2583 dequeue_mid(mid, rdata->result);
2587 /* set up first iov for signature check */
2588 rdata->iov[0].iov_base = buf;
2589 rdata->iov[0].iov_len = 4;
2590 rdata->iov[1].iov_base = buf + 4;
2591 rdata->iov[1].iov_len = server->vals->read_rsp_size - 4;
2592 cifs_dbg(FYI, "0: iov_base=%p iov_len=%zu\n",
2593 rdata->iov[0].iov_base, server->vals->read_rsp_size);
2595 length = rdata->copy_into_pages(server, rdata, &iter);
2602 dequeue_mid(mid, false);
2607 receive_encrypted_read(struct TCP_Server_Info *server, struct mid_q_entry **mid)
2609 char *buf = server->smallbuf;
2610 struct smb2_transform_hdr *tr_hdr = (struct smb2_transform_hdr *)buf;
2611 unsigned int npages;
2612 struct page **pages;
2614 unsigned int buflen = server->pdu_size + server->vals->header_preamble_size;
2618 len = min_t(unsigned int, buflen, server->vals->read_rsp_size -
2619 server->vals->header_preamble_size +
2620 sizeof(struct smb2_transform_hdr)) - HEADER_SIZE(server) + 1;
2622 rc = cifs_read_from_socket(server, buf + HEADER_SIZE(server) - 1, len);
2625 server->total_read += rc;
2627 len = le32_to_cpu(tr_hdr->OriginalMessageSize) +
2628 server->vals->header_preamble_size -
2629 server->vals->read_rsp_size;
2630 npages = DIV_ROUND_UP(len, PAGE_SIZE);
2632 pages = kmalloc_array(npages, sizeof(struct page *), GFP_KERNEL);
2638 for (; i < npages; i++) {
2639 pages[i] = alloc_page(GFP_KERNEL|__GFP_HIGHMEM);
2646 /* read read data into pages */
2647 rc = read_data_into_pages(server, pages, npages, len);
2651 rc = cifs_discard_remaining_data(server);
2655 rc = decrypt_raw_data(server, buf, server->vals->read_rsp_size -
2656 server->vals->header_preamble_size,
2657 pages, npages, len);
2661 *mid = smb2_find_mid(server, buf);
2663 cifs_dbg(FYI, "mid not found\n");
2665 cifs_dbg(FYI, "mid found\n");
2666 (*mid)->decrypted = true;
2667 rc = handle_read_data(server, *mid, buf,
2668 server->vals->read_rsp_size,
2669 pages, npages, len);
2673 for (i = i - 1; i >= 0; i--)
2678 cifs_discard_remaining_data(server);
2683 receive_encrypted_standard(struct TCP_Server_Info *server,
2684 struct mid_q_entry **mid)
2687 char *buf = server->smallbuf;
2688 unsigned int pdu_length = server->pdu_size;
2689 unsigned int buf_size;
2690 struct mid_q_entry *mid_entry;
2692 /* switch to large buffer if too big for a small one */
2693 if (pdu_length + server->vals->header_preamble_size > MAX_CIFS_SMALL_BUFFER_SIZE) {
2694 server->large_buf = true;
2695 memcpy(server->bigbuf, buf, server->total_read);
2696 buf = server->bigbuf;
2699 /* now read the rest */
2700 length = cifs_read_from_socket(server, buf + HEADER_SIZE(server) - 1,
2701 pdu_length - HEADER_SIZE(server) + 1 +
2702 server->vals->header_preamble_size);
2705 server->total_read += length;
2707 buf_size = pdu_length + server->vals->header_preamble_size - sizeof(struct smb2_transform_hdr);
2708 length = decrypt_raw_data(server, buf, buf_size, NULL, 0, 0);
2712 mid_entry = smb2_find_mid(server, buf);
2713 if (mid_entry == NULL)
2714 cifs_dbg(FYI, "mid not found\n");
2716 cifs_dbg(FYI, "mid found\n");
2717 mid_entry->decrypted = true;
2722 if (mid_entry && mid_entry->handle)
2723 return mid_entry->handle(server, mid_entry);
2725 return cifs_handle_standard(server, mid_entry);
2729 smb3_receive_transform(struct TCP_Server_Info *server, struct mid_q_entry **mid)
2731 char *buf = server->smallbuf;
2732 unsigned int pdu_length = server->pdu_size;
2733 struct smb2_transform_hdr *tr_hdr = (struct smb2_transform_hdr *)buf;
2734 unsigned int orig_len = le32_to_cpu(tr_hdr->OriginalMessageSize);
2736 if (pdu_length + server->vals->header_preamble_size < sizeof(struct smb2_transform_hdr) +
2737 sizeof(struct smb2_sync_hdr)) {
2738 cifs_dbg(VFS, "Transform message is too small (%u)\n",
2740 cifs_reconnect(server);
2741 wake_up(&server->response_q);
2742 return -ECONNABORTED;
2745 if (pdu_length + server->vals->header_preamble_size < orig_len + sizeof(struct smb2_transform_hdr)) {
2746 cifs_dbg(VFS, "Transform message is broken\n");
2747 cifs_reconnect(server);
2748 wake_up(&server->response_q);
2749 return -ECONNABORTED;
2752 if (pdu_length + server->vals->header_preamble_size > CIFSMaxBufSize + MAX_HEADER_SIZE(server))
2753 return receive_encrypted_read(server, mid);
2755 return receive_encrypted_standard(server, mid);
2759 smb3_handle_read_data(struct TCP_Server_Info *server, struct mid_q_entry *mid)
2761 char *buf = server->large_buf ? server->bigbuf : server->smallbuf;
2763 return handle_read_data(server, mid, buf, server->pdu_size +
2764 server->vals->header_preamble_size,
2768 struct smb_version_operations smb20_operations = {
2769 .compare_fids = smb2_compare_fids,
2770 .setup_request = smb2_setup_request,
2771 .setup_async_request = smb2_setup_async_request,
2772 .check_receive = smb2_check_receive,
2773 .add_credits = smb2_add_credits,
2774 .set_credits = smb2_set_credits,
2775 .get_credits_field = smb2_get_credits_field,
2776 .get_credits = smb2_get_credits,
2777 .wait_mtu_credits = cifs_wait_mtu_credits,
2778 .get_next_mid = smb2_get_next_mid,
2779 .read_data_offset = smb2_read_data_offset,
2780 .read_data_length = smb2_read_data_length,
2781 .map_error = map_smb2_to_linux_error,
2782 .find_mid = smb2_find_mid,
2783 .check_message = smb2_check_message,
2784 .dump_detail = smb2_dump_detail,
2785 .clear_stats = smb2_clear_stats,
2786 .print_stats = smb2_print_stats,
2787 .is_oplock_break = smb2_is_valid_oplock_break,
2788 .handle_cancelled_mid = smb2_handle_cancelled_mid,
2789 .downgrade_oplock = smb2_downgrade_oplock,
2790 .need_neg = smb2_need_neg,
2791 .negotiate = smb2_negotiate,
2792 .negotiate_wsize = smb2_negotiate_wsize,
2793 .negotiate_rsize = smb2_negotiate_rsize,
2794 .sess_setup = SMB2_sess_setup,
2795 .logoff = SMB2_logoff,
2796 .tree_connect = SMB2_tcon,
2797 .tree_disconnect = SMB2_tdis,
2798 .qfs_tcon = smb2_qfs_tcon,
2799 .is_path_accessible = smb2_is_path_accessible,
2800 .can_echo = smb2_can_echo,
2802 .query_path_info = smb2_query_path_info,
2803 .get_srv_inum = smb2_get_srv_inum,
2804 .query_file_info = smb2_query_file_info,
2805 .set_path_size = smb2_set_path_size,
2806 .set_file_size = smb2_set_file_size,
2807 .set_file_info = smb2_set_file_info,
2808 .set_compression = smb2_set_compression,
2809 .mkdir = smb2_mkdir,
2810 .mkdir_setinfo = smb2_mkdir_setinfo,
2811 .rmdir = smb2_rmdir,
2812 .unlink = smb2_unlink,
2813 .rename = smb2_rename_path,
2814 .create_hardlink = smb2_create_hardlink,
2815 .query_symlink = smb2_query_symlink,
2816 .query_mf_symlink = smb3_query_mf_symlink,
2817 .create_mf_symlink = smb3_create_mf_symlink,
2818 .open = smb2_open_file,
2819 .set_fid = smb2_set_fid,
2820 .close = smb2_close_file,
2821 .flush = smb2_flush_file,
2822 .async_readv = smb2_async_readv,
2823 .async_writev = smb2_async_writev,
2824 .sync_read = smb2_sync_read,
2825 .sync_write = smb2_sync_write,
2826 .query_dir_first = smb2_query_dir_first,
2827 .query_dir_next = smb2_query_dir_next,
2828 .close_dir = smb2_close_dir,
2829 .calc_smb_size = smb2_calc_size,
2830 .is_status_pending = smb2_is_status_pending,
2831 .is_session_expired = smb2_is_session_expired,
2832 .oplock_response = smb2_oplock_response,
2833 .queryfs = smb2_queryfs,
2834 .mand_lock = smb2_mand_lock,
2835 .mand_unlock_range = smb2_unlock_range,
2836 .push_mand_locks = smb2_push_mandatory_locks,
2837 .get_lease_key = smb2_get_lease_key,
2838 .set_lease_key = smb2_set_lease_key,
2839 .new_lease_key = smb2_new_lease_key,
2840 .calc_signature = smb2_calc_signature,
2841 .is_read_op = smb2_is_read_op,
2842 .set_oplock_level = smb2_set_oplock_level,
2843 .create_lease_buf = smb2_create_lease_buf,
2844 .parse_lease_buf = smb2_parse_lease_buf,
2845 .copychunk_range = smb2_copychunk_range,
2846 .wp_retry_size = smb2_wp_retry_size,
2847 .dir_needs_close = smb2_dir_needs_close,
2848 .get_dfs_refer = smb2_get_dfs_refer,
2849 .select_sectype = smb2_select_sectype,
2850 #ifdef CONFIG_CIFS_XATTR
2851 .query_all_EAs = smb2_query_eas,
2852 .set_EA = smb2_set_ea,
2853 #endif /* CIFS_XATTR */
2854 #ifdef CONFIG_CIFS_ACL
2855 .get_acl = get_smb2_acl,
2856 .get_acl_by_fid = get_smb2_acl_by_fid,
2857 .set_acl = set_smb2_acl,
2858 #endif /* CIFS_ACL */
2861 struct smb_version_operations smb21_operations = {
2862 .compare_fids = smb2_compare_fids,
2863 .setup_request = smb2_setup_request,
2864 .setup_async_request = smb2_setup_async_request,
2865 .check_receive = smb2_check_receive,
2866 .add_credits = smb2_add_credits,
2867 .set_credits = smb2_set_credits,
2868 .get_credits_field = smb2_get_credits_field,
2869 .get_credits = smb2_get_credits,
2870 .wait_mtu_credits = smb2_wait_mtu_credits,
2871 .get_next_mid = smb2_get_next_mid,
2872 .read_data_offset = smb2_read_data_offset,
2873 .read_data_length = smb2_read_data_length,
2874 .map_error = map_smb2_to_linux_error,
2875 .find_mid = smb2_find_mid,
2876 .check_message = smb2_check_message,
2877 .dump_detail = smb2_dump_detail,
2878 .clear_stats = smb2_clear_stats,
2879 .print_stats = smb2_print_stats,
2880 .is_oplock_break = smb2_is_valid_oplock_break,
2881 .handle_cancelled_mid = smb2_handle_cancelled_mid,
2882 .downgrade_oplock = smb2_downgrade_oplock,
2883 .need_neg = smb2_need_neg,
2884 .negotiate = smb2_negotiate,
2885 .negotiate_wsize = smb2_negotiate_wsize,
2886 .negotiate_rsize = smb2_negotiate_rsize,
2887 .sess_setup = SMB2_sess_setup,
2888 .logoff = SMB2_logoff,
2889 .tree_connect = SMB2_tcon,
2890 .tree_disconnect = SMB2_tdis,
2891 .qfs_tcon = smb2_qfs_tcon,
2892 .is_path_accessible = smb2_is_path_accessible,
2893 .can_echo = smb2_can_echo,
2895 .query_path_info = smb2_query_path_info,
2896 .get_srv_inum = smb2_get_srv_inum,
2897 .query_file_info = smb2_query_file_info,
2898 .set_path_size = smb2_set_path_size,
2899 .set_file_size = smb2_set_file_size,
2900 .set_file_info = smb2_set_file_info,
2901 .set_compression = smb2_set_compression,
2902 .mkdir = smb2_mkdir,
2903 .mkdir_setinfo = smb2_mkdir_setinfo,
2904 .rmdir = smb2_rmdir,
2905 .unlink = smb2_unlink,
2906 .rename = smb2_rename_path,
2907 .create_hardlink = smb2_create_hardlink,
2908 .query_symlink = smb2_query_symlink,
2909 .query_mf_symlink = smb3_query_mf_symlink,
2910 .create_mf_symlink = smb3_create_mf_symlink,
2911 .open = smb2_open_file,
2912 .set_fid = smb2_set_fid,
2913 .close = smb2_close_file,
2914 .flush = smb2_flush_file,
2915 .async_readv = smb2_async_readv,
2916 .async_writev = smb2_async_writev,
2917 .sync_read = smb2_sync_read,
2918 .sync_write = smb2_sync_write,
2919 .query_dir_first = smb2_query_dir_first,
2920 .query_dir_next = smb2_query_dir_next,
2921 .close_dir = smb2_close_dir,
2922 .calc_smb_size = smb2_calc_size,
2923 .is_status_pending = smb2_is_status_pending,
2924 .is_session_expired = smb2_is_session_expired,
2925 .oplock_response = smb2_oplock_response,
2926 .queryfs = smb2_queryfs,
2927 .mand_lock = smb2_mand_lock,
2928 .mand_unlock_range = smb2_unlock_range,
2929 .push_mand_locks = smb2_push_mandatory_locks,
2930 .get_lease_key = smb2_get_lease_key,
2931 .set_lease_key = smb2_set_lease_key,
2932 .new_lease_key = smb2_new_lease_key,
2933 .calc_signature = smb2_calc_signature,
2934 .is_read_op = smb21_is_read_op,
2935 .set_oplock_level = smb21_set_oplock_level,
2936 .create_lease_buf = smb2_create_lease_buf,
2937 .parse_lease_buf = smb2_parse_lease_buf,
2938 .copychunk_range = smb2_copychunk_range,
2939 .wp_retry_size = smb2_wp_retry_size,
2940 .dir_needs_close = smb2_dir_needs_close,
2941 .enum_snapshots = smb3_enum_snapshots,
2942 .get_dfs_refer = smb2_get_dfs_refer,
2943 .select_sectype = smb2_select_sectype,
2944 #ifdef CONFIG_CIFS_XATTR
2945 .query_all_EAs = smb2_query_eas,
2946 .set_EA = smb2_set_ea,
2947 #endif /* CIFS_XATTR */
2948 #ifdef CONFIG_CIFS_ACL
2949 .get_acl = get_smb2_acl,
2950 .get_acl_by_fid = get_smb2_acl_by_fid,
2951 .set_acl = set_smb2_acl,
2952 #endif /* CIFS_ACL */
2955 struct smb_version_operations smb30_operations = {
2956 .compare_fids = smb2_compare_fids,
2957 .setup_request = smb2_setup_request,
2958 .setup_async_request = smb2_setup_async_request,
2959 .check_receive = smb2_check_receive,
2960 .add_credits = smb2_add_credits,
2961 .set_credits = smb2_set_credits,
2962 .get_credits_field = smb2_get_credits_field,
2963 .get_credits = smb2_get_credits,
2964 .wait_mtu_credits = smb2_wait_mtu_credits,
2965 .get_next_mid = smb2_get_next_mid,
2966 .read_data_offset = smb2_read_data_offset,
2967 .read_data_length = smb2_read_data_length,
2968 .map_error = map_smb2_to_linux_error,
2969 .find_mid = smb2_find_mid,
2970 .check_message = smb2_check_message,
2971 .dump_detail = smb2_dump_detail,
2972 .clear_stats = smb2_clear_stats,
2973 .print_stats = smb2_print_stats,
2974 .dump_share_caps = smb2_dump_share_caps,
2975 .is_oplock_break = smb2_is_valid_oplock_break,
2976 .handle_cancelled_mid = smb2_handle_cancelled_mid,
2977 .downgrade_oplock = smb2_downgrade_oplock,
2978 .need_neg = smb2_need_neg,
2979 .negotiate = smb2_negotiate,
2980 .negotiate_wsize = smb2_negotiate_wsize,
2981 .negotiate_rsize = smb2_negotiate_rsize,
2982 .sess_setup = SMB2_sess_setup,
2983 .logoff = SMB2_logoff,
2984 .tree_connect = SMB2_tcon,
2985 .tree_disconnect = SMB2_tdis,
2986 .qfs_tcon = smb3_qfs_tcon,
2987 .is_path_accessible = smb2_is_path_accessible,
2988 .can_echo = smb2_can_echo,
2990 .query_path_info = smb2_query_path_info,
2991 .get_srv_inum = smb2_get_srv_inum,
2992 .query_file_info = smb2_query_file_info,
2993 .set_path_size = smb2_set_path_size,
2994 .set_file_size = smb2_set_file_size,
2995 .set_file_info = smb2_set_file_info,
2996 .set_compression = smb2_set_compression,
2997 .mkdir = smb2_mkdir,
2998 .mkdir_setinfo = smb2_mkdir_setinfo,
2999 .rmdir = smb2_rmdir,
3000 .unlink = smb2_unlink,
3001 .rename = smb2_rename_path,
3002 .create_hardlink = smb2_create_hardlink,
3003 .query_symlink = smb2_query_symlink,
3004 .query_mf_symlink = smb3_query_mf_symlink,
3005 .create_mf_symlink = smb3_create_mf_symlink,
3006 .open = smb2_open_file,
3007 .set_fid = smb2_set_fid,
3008 .close = smb2_close_file,
3009 .flush = smb2_flush_file,
3010 .async_readv = smb2_async_readv,
3011 .async_writev = smb2_async_writev,
3012 .sync_read = smb2_sync_read,
3013 .sync_write = smb2_sync_write,
3014 .query_dir_first = smb2_query_dir_first,
3015 .query_dir_next = smb2_query_dir_next,
3016 .close_dir = smb2_close_dir,
3017 .calc_smb_size = smb2_calc_size,
3018 .is_status_pending = smb2_is_status_pending,
3019 .is_session_expired = smb2_is_session_expired,
3020 .oplock_response = smb2_oplock_response,
3021 .queryfs = smb2_queryfs,
3022 .mand_lock = smb2_mand_lock,
3023 .mand_unlock_range = smb2_unlock_range,
3024 .push_mand_locks = smb2_push_mandatory_locks,
3025 .get_lease_key = smb2_get_lease_key,
3026 .set_lease_key = smb2_set_lease_key,
3027 .new_lease_key = smb2_new_lease_key,
3028 .generate_signingkey = generate_smb30signingkey,
3029 .calc_signature = smb3_calc_signature,
3030 .set_integrity = smb3_set_integrity,
3031 .is_read_op = smb21_is_read_op,
3032 .set_oplock_level = smb3_set_oplock_level,
3033 .create_lease_buf = smb3_create_lease_buf,
3034 .parse_lease_buf = smb3_parse_lease_buf,
3035 .copychunk_range = smb2_copychunk_range,
3036 .duplicate_extents = smb2_duplicate_extents,
3037 .validate_negotiate = smb3_validate_negotiate,
3038 .wp_retry_size = smb2_wp_retry_size,
3039 .dir_needs_close = smb2_dir_needs_close,
3040 .fallocate = smb3_fallocate,
3041 .enum_snapshots = smb3_enum_snapshots,
3042 .init_transform_rq = smb3_init_transform_rq,
3043 .free_transform_rq = smb3_free_transform_rq,
3044 .is_transform_hdr = smb3_is_transform_hdr,
3045 .receive_transform = smb3_receive_transform,
3046 .get_dfs_refer = smb2_get_dfs_refer,
3047 .select_sectype = smb2_select_sectype,
3048 #ifdef CONFIG_CIFS_XATTR
3049 .query_all_EAs = smb2_query_eas,
3050 .set_EA = smb2_set_ea,
3051 #endif /* CIFS_XATTR */
3052 #ifdef CONFIG_CIFS_ACL
3053 .get_acl = get_smb2_acl,
3054 .get_acl_by_fid = get_smb2_acl_by_fid,
3055 .set_acl = set_smb2_acl,
3056 #endif /* CIFS_ACL */
3059 #ifdef CONFIG_CIFS_SMB311
3060 struct smb_version_operations smb311_operations = {
3061 .compare_fids = smb2_compare_fids,
3062 .setup_request = smb2_setup_request,
3063 .setup_async_request = smb2_setup_async_request,
3064 .check_receive = smb2_check_receive,
3065 .add_credits = smb2_add_credits,
3066 .set_credits = smb2_set_credits,
3067 .get_credits_field = smb2_get_credits_field,
3068 .get_credits = smb2_get_credits,
3069 .wait_mtu_credits = smb2_wait_mtu_credits,
3070 .get_next_mid = smb2_get_next_mid,
3071 .read_data_offset = smb2_read_data_offset,
3072 .read_data_length = smb2_read_data_length,
3073 .map_error = map_smb2_to_linux_error,
3074 .find_mid = smb2_find_mid,
3075 .check_message = smb2_check_message,
3076 .dump_detail = smb2_dump_detail,
3077 .clear_stats = smb2_clear_stats,
3078 .print_stats = smb2_print_stats,
3079 .dump_share_caps = smb2_dump_share_caps,
3080 .is_oplock_break = smb2_is_valid_oplock_break,
3081 .handle_cancelled_mid = smb2_handle_cancelled_mid,
3082 .downgrade_oplock = smb2_downgrade_oplock,
3083 .need_neg = smb2_need_neg,
3084 .negotiate = smb2_negotiate,
3085 .negotiate_wsize = smb2_negotiate_wsize,
3086 .negotiate_rsize = smb2_negotiate_rsize,
3087 .sess_setup = SMB2_sess_setup,
3088 .logoff = SMB2_logoff,
3089 .tree_connect = SMB2_tcon,
3090 .tree_disconnect = SMB2_tdis,
3091 .qfs_tcon = smb3_qfs_tcon,
3092 .is_path_accessible = smb2_is_path_accessible,
3093 .can_echo = smb2_can_echo,
3095 .query_path_info = smb2_query_path_info,
3096 .get_srv_inum = smb2_get_srv_inum,
3097 .query_file_info = smb2_query_file_info,
3098 .set_path_size = smb2_set_path_size,
3099 .set_file_size = smb2_set_file_size,
3100 .set_file_info = smb2_set_file_info,
3101 .set_compression = smb2_set_compression,
3102 .mkdir = smb2_mkdir,
3103 .mkdir_setinfo = smb2_mkdir_setinfo,
3104 .rmdir = smb2_rmdir,
3105 .unlink = smb2_unlink,
3106 .rename = smb2_rename_path,
3107 .create_hardlink = smb2_create_hardlink,
3108 .query_symlink = smb2_query_symlink,
3109 .query_mf_symlink = smb3_query_mf_symlink,
3110 .create_mf_symlink = smb3_create_mf_symlink,
3111 .open = smb2_open_file,
3112 .set_fid = smb2_set_fid,
3113 .close = smb2_close_file,
3114 .flush = smb2_flush_file,
3115 .async_readv = smb2_async_readv,
3116 .async_writev = smb2_async_writev,
3117 .sync_read = smb2_sync_read,
3118 .sync_write = smb2_sync_write,
3119 .query_dir_first = smb2_query_dir_first,
3120 .query_dir_next = smb2_query_dir_next,
3121 .close_dir = smb2_close_dir,
3122 .calc_smb_size = smb2_calc_size,
3123 .is_status_pending = smb2_is_status_pending,
3124 .is_session_expired = smb2_is_session_expired,
3125 .oplock_response = smb2_oplock_response,
3126 .queryfs = smb2_queryfs,
3127 .mand_lock = smb2_mand_lock,
3128 .mand_unlock_range = smb2_unlock_range,
3129 .push_mand_locks = smb2_push_mandatory_locks,
3130 .get_lease_key = smb2_get_lease_key,
3131 .set_lease_key = smb2_set_lease_key,
3132 .new_lease_key = smb2_new_lease_key,
3133 .generate_signingkey = generate_smb311signingkey,
3134 .calc_signature = smb3_calc_signature,
3135 .set_integrity = smb3_set_integrity,
3136 .is_read_op = smb21_is_read_op,
3137 .set_oplock_level = smb3_set_oplock_level,
3138 .create_lease_buf = smb3_create_lease_buf,
3139 .parse_lease_buf = smb3_parse_lease_buf,
3140 .copychunk_range = smb2_copychunk_range,
3141 .duplicate_extents = smb2_duplicate_extents,
3142 /* .validate_negotiate = smb3_validate_negotiate, */ /* not used in 3.11 */
3143 .wp_retry_size = smb2_wp_retry_size,
3144 .dir_needs_close = smb2_dir_needs_close,
3145 .fallocate = smb3_fallocate,
3146 .enum_snapshots = smb3_enum_snapshots,
3147 .init_transform_rq = smb3_init_transform_rq,
3148 .free_transform_rq = smb3_free_transform_rq,
3149 .is_transform_hdr = smb3_is_transform_hdr,
3150 .receive_transform = smb3_receive_transform,
3151 .get_dfs_refer = smb2_get_dfs_refer,
3152 .select_sectype = smb2_select_sectype,
3153 #ifdef CONFIG_CIFS_XATTR
3154 .query_all_EAs = smb2_query_eas,
3155 .set_EA = smb2_set_ea,
3156 #endif /* CIFS_XATTR */
3158 #endif /* CIFS_SMB311 */
3160 struct smb_version_values smb20_values = {
3161 .version_string = SMB20_VERSION_STRING,
3162 .protocol_id = SMB20_PROT_ID,
3163 .req_capabilities = 0, /* MBZ */
3164 .large_lock_type = 0,
3165 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
3166 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
3167 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
3168 .header_size = sizeof(struct smb2_hdr),
3169 .header_preamble_size = 4,
3170 .max_header_size = MAX_SMB2_HDR_SIZE,
3171 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
3172 .lock_cmd = SMB2_LOCK,
3174 .cap_nt_find = SMB2_NT_FIND,
3175 .cap_large_files = SMB2_LARGE_FILES,
3176 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
3177 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
3178 .create_lease_size = sizeof(struct create_lease),
3181 struct smb_version_values smb21_values = {
3182 .version_string = SMB21_VERSION_STRING,
3183 .protocol_id = SMB21_PROT_ID,
3184 .req_capabilities = 0, /* MBZ on negotiate req until SMB3 dialect */
3185 .large_lock_type = 0,
3186 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
3187 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
3188 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
3189 .header_size = sizeof(struct smb2_hdr),
3190 .header_preamble_size = 4,
3191 .max_header_size = MAX_SMB2_HDR_SIZE,
3192 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
3193 .lock_cmd = SMB2_LOCK,
3195 .cap_nt_find = SMB2_NT_FIND,
3196 .cap_large_files = SMB2_LARGE_FILES,
3197 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
3198 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
3199 .create_lease_size = sizeof(struct create_lease),
3202 struct smb_version_values smb3any_values = {
3203 .version_string = SMB3ANY_VERSION_STRING,
3204 .protocol_id = SMB302_PROT_ID, /* doesn't matter, send protocol array */
3205 .req_capabilities = SMB2_GLOBAL_CAP_DFS | SMB2_GLOBAL_CAP_LEASING | SMB2_GLOBAL_CAP_LARGE_MTU | SMB2_GLOBAL_CAP_PERSISTENT_HANDLES | SMB2_GLOBAL_CAP_ENCRYPTION,
3206 .large_lock_type = 0,
3207 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
3208 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
3209 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
3210 .header_size = sizeof(struct smb2_hdr),
3211 .header_preamble_size = 4,
3212 .max_header_size = MAX_SMB2_HDR_SIZE,
3213 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
3214 .lock_cmd = SMB2_LOCK,
3216 .cap_nt_find = SMB2_NT_FIND,
3217 .cap_large_files = SMB2_LARGE_FILES,
3218 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
3219 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
3220 .create_lease_size = sizeof(struct create_lease_v2),
3223 struct smb_version_values smbdefault_values = {
3224 .version_string = SMBDEFAULT_VERSION_STRING,
3225 .protocol_id = SMB302_PROT_ID, /* doesn't matter, send protocol array */
3226 .req_capabilities = SMB2_GLOBAL_CAP_DFS | SMB2_GLOBAL_CAP_LEASING | SMB2_GLOBAL_CAP_LARGE_MTU | SMB2_GLOBAL_CAP_PERSISTENT_HANDLES | SMB2_GLOBAL_CAP_ENCRYPTION,
3227 .large_lock_type = 0,
3228 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
3229 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
3230 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
3231 .header_size = sizeof(struct smb2_hdr),
3232 .header_preamble_size = 4,
3233 .max_header_size = MAX_SMB2_HDR_SIZE,
3234 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
3235 .lock_cmd = SMB2_LOCK,
3237 .cap_nt_find = SMB2_NT_FIND,
3238 .cap_large_files = SMB2_LARGE_FILES,
3239 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
3240 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
3241 .create_lease_size = sizeof(struct create_lease_v2),
3244 struct smb_version_values smb30_values = {
3245 .version_string = SMB30_VERSION_STRING,
3246 .protocol_id = SMB30_PROT_ID,
3247 .req_capabilities = SMB2_GLOBAL_CAP_DFS | SMB2_GLOBAL_CAP_LEASING | SMB2_GLOBAL_CAP_LARGE_MTU | SMB2_GLOBAL_CAP_PERSISTENT_HANDLES | SMB2_GLOBAL_CAP_ENCRYPTION,
3248 .large_lock_type = 0,
3249 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
3250 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
3251 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
3252 .header_size = sizeof(struct smb2_hdr),
3253 .header_preamble_size = 4,
3254 .max_header_size = MAX_SMB2_HDR_SIZE,
3255 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
3256 .lock_cmd = SMB2_LOCK,
3258 .cap_nt_find = SMB2_NT_FIND,
3259 .cap_large_files = SMB2_LARGE_FILES,
3260 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
3261 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
3262 .create_lease_size = sizeof(struct create_lease_v2),
3265 struct smb_version_values smb302_values = {
3266 .version_string = SMB302_VERSION_STRING,
3267 .protocol_id = SMB302_PROT_ID,
3268 .req_capabilities = SMB2_GLOBAL_CAP_DFS | SMB2_GLOBAL_CAP_LEASING | SMB2_GLOBAL_CAP_LARGE_MTU | SMB2_GLOBAL_CAP_PERSISTENT_HANDLES | SMB2_GLOBAL_CAP_ENCRYPTION,
3269 .large_lock_type = 0,
3270 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
3271 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
3272 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
3273 .header_size = sizeof(struct smb2_hdr),
3274 .header_preamble_size = 4,
3275 .max_header_size = MAX_SMB2_HDR_SIZE,
3276 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
3277 .lock_cmd = SMB2_LOCK,
3279 .cap_nt_find = SMB2_NT_FIND,
3280 .cap_large_files = SMB2_LARGE_FILES,
3281 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
3282 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
3283 .create_lease_size = sizeof(struct create_lease_v2),
3286 #ifdef CONFIG_CIFS_SMB311
3287 struct smb_version_values smb311_values = {
3288 .version_string = SMB311_VERSION_STRING,
3289 .protocol_id = SMB311_PROT_ID,
3290 .req_capabilities = SMB2_GLOBAL_CAP_DFS | SMB2_GLOBAL_CAP_LEASING | SMB2_GLOBAL_CAP_LARGE_MTU | SMB2_GLOBAL_CAP_PERSISTENT_HANDLES | SMB2_GLOBAL_CAP_ENCRYPTION,
3291 .large_lock_type = 0,
3292 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
3293 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
3294 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
3295 .header_size = sizeof(struct smb2_hdr),
3296 .header_preamble_size = 4,
3297 .max_header_size = MAX_SMB2_HDR_SIZE,
3298 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
3299 .lock_cmd = SMB2_LOCK,
3301 .cap_nt_find = SMB2_NT_FIND,
3302 .cap_large_files = SMB2_LARGE_FILES,
3303 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
3304 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
3305 .create_lease_size = sizeof(struct create_lease_v2),