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
256 wsize = min_t(unsigned int,
257 wsize, server->smbd_conn->max_readwrite_size);
259 if (!(server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU))
260 wsize = min_t(unsigned int, wsize, SMB2_MAX_BUFFER_SIZE);
266 smb2_negotiate_rsize(struct cifs_tcon *tcon, struct smb_vol *volume_info)
268 struct TCP_Server_Info *server = tcon->ses->server;
271 /* start with specified rsize, or default */
272 rsize = volume_info->rsize ? volume_info->rsize : CIFS_DEFAULT_IOSIZE;
273 rsize = min_t(unsigned int, rsize, server->max_read);
274 #ifdef CONFIG_CIFS_SMB_DIRECT
276 rsize = min_t(unsigned int,
277 rsize, server->smbd_conn->max_readwrite_size);
280 if (!(server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU))
281 rsize = min_t(unsigned int, rsize, SMB2_MAX_BUFFER_SIZE);
286 #ifdef CONFIG_CIFS_STATS2
288 SMB3_request_interfaces(const unsigned int xid, struct cifs_tcon *tcon)
291 unsigned int ret_data_len = 0;
292 struct network_interface_info_ioctl_rsp *out_buf;
294 rc = SMB2_ioctl(xid, tcon, NO_FILE_ID, NO_FILE_ID,
295 FSCTL_QUERY_NETWORK_INTERFACE_INFO, true /* is_fsctl */,
296 NULL /* no data input */, 0 /* no data input */,
297 (char **)&out_buf, &ret_data_len);
299 cifs_dbg(VFS, "error %d on ioctl to get interface list\n", rc);
300 else if (ret_data_len < sizeof(struct network_interface_info_ioctl_rsp)) {
301 cifs_dbg(VFS, "server returned bad net interface info buf\n");
304 /* Dump info on first interface */
305 cifs_dbg(FYI, "Adapter Capability 0x%x\t",
306 le32_to_cpu(out_buf->Capability));
307 cifs_dbg(FYI, "Link Speed %lld\n",
308 le64_to_cpu(out_buf->LinkSpeed));
316 smb3_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon)
319 __le16 srch_path = 0; /* Null - open root of share */
320 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
321 struct cifs_open_parms oparms;
325 oparms.desired_access = FILE_READ_ATTRIBUTES;
326 oparms.disposition = FILE_OPEN;
327 oparms.create_options = 0;
329 oparms.reconnect = false;
331 rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL);
335 #ifdef CONFIG_CIFS_STATS2
336 SMB3_request_interfaces(xid, tcon);
339 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
340 FS_ATTRIBUTE_INFORMATION);
341 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
342 FS_DEVICE_INFORMATION);
343 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
344 FS_SECTOR_SIZE_INFORMATION); /* SMB3 specific */
345 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
350 smb2_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon)
353 __le16 srch_path = 0; /* Null - open root of share */
354 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
355 struct cifs_open_parms oparms;
359 oparms.desired_access = FILE_READ_ATTRIBUTES;
360 oparms.disposition = FILE_OPEN;
361 oparms.create_options = 0;
363 oparms.reconnect = false;
365 rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL);
369 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
370 FS_ATTRIBUTE_INFORMATION);
371 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
372 FS_DEVICE_INFORMATION);
373 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
378 smb2_is_path_accessible(const unsigned int xid, struct cifs_tcon *tcon,
379 struct cifs_sb_info *cifs_sb, const char *full_path)
383 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
384 struct cifs_open_parms oparms;
387 utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb);
392 oparms.desired_access = FILE_READ_ATTRIBUTES;
393 oparms.disposition = FILE_OPEN;
394 oparms.create_options = 0;
396 oparms.reconnect = false;
398 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL);
404 rc = SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
410 smb2_get_srv_inum(const unsigned int xid, struct cifs_tcon *tcon,
411 struct cifs_sb_info *cifs_sb, const char *full_path,
412 u64 *uniqueid, FILE_ALL_INFO *data)
414 *uniqueid = le64_to_cpu(data->IndexNumber);
419 smb2_query_file_info(const unsigned int xid, struct cifs_tcon *tcon,
420 struct cifs_fid *fid, FILE_ALL_INFO *data)
423 struct smb2_file_all_info *smb2_data;
425 smb2_data = kzalloc(sizeof(struct smb2_file_all_info) + PATH_MAX * 2,
427 if (smb2_data == NULL)
430 rc = SMB2_query_info(xid, tcon, fid->persistent_fid, fid->volatile_fid,
433 move_smb2_info_to_cifs(data, smb2_data);
438 #ifdef CONFIG_CIFS_XATTR
440 move_smb2_ea_to_cifs(char *dst, size_t dst_size,
441 struct smb2_file_full_ea_info *src, size_t src_size,
442 const unsigned char *ea_name)
445 unsigned int ea_name_len = ea_name ? strlen(ea_name) : 0;
447 size_t name_len, value_len, user_name_len;
449 while (src_size > 0) {
450 name = &src->ea_data[0];
451 name_len = (size_t)src->ea_name_length;
452 value = &src->ea_data[src->ea_name_length + 1];
453 value_len = (size_t)le16_to_cpu(src->ea_value_length);
459 if (src_size < 8 + name_len + 1 + value_len) {
460 cifs_dbg(FYI, "EA entry goes beyond length of list\n");
466 if (ea_name_len == name_len &&
467 memcmp(ea_name, name, name_len) == 0) {
471 if (dst_size < value_len) {
475 memcpy(dst, value, value_len);
479 /* 'user.' plus a terminating null */
480 user_name_len = 5 + 1 + name_len;
484 if (dst_size >= user_name_len) {
485 dst_size -= user_name_len;
486 memcpy(dst, "user.", 5);
488 memcpy(dst, src->ea_data, name_len);
492 } else if (dst_size == 0) {
493 /* skip copy - calc size only */
495 /* stop before overrun buffer */
501 if (!src->next_entry_offset)
504 if (src_size < le32_to_cpu(src->next_entry_offset)) {
505 /* stop before overrun buffer */
509 src_size -= le32_to_cpu(src->next_entry_offset);
510 src = (void *)((char *)src +
511 le32_to_cpu(src->next_entry_offset));
514 /* didn't find the named attribute */
523 smb2_query_eas(const unsigned int xid, struct cifs_tcon *tcon,
524 const unsigned char *path, const unsigned char *ea_name,
525 char *ea_data, size_t buf_size,
526 struct cifs_sb_info *cifs_sb)
530 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
531 struct cifs_open_parms oparms;
533 struct smb2_file_full_ea_info *smb2_data;
534 int ea_buf_size = SMB2_MIN_EA_BUF;
536 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
541 oparms.desired_access = FILE_READ_EA;
542 oparms.disposition = FILE_OPEN;
543 oparms.create_options = 0;
545 oparms.reconnect = false;
547 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL);
550 cifs_dbg(FYI, "open failed rc=%d\n", rc);
555 smb2_data = kzalloc(ea_buf_size, GFP_KERNEL);
556 if (smb2_data == NULL) {
557 SMB2_close(xid, tcon, fid.persistent_fid,
562 rc = SMB2_query_eas(xid, tcon, fid.persistent_fid,
564 ea_buf_size, smb2_data);
572 if (ea_buf_size > SMB2_MAX_EA_BUF) {
573 cifs_dbg(VFS, "EA size is too large\n");
574 SMB2_close(xid, tcon, fid.persistent_fid,
580 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
583 rc = move_smb2_ea_to_cifs(ea_data, buf_size, smb2_data,
584 SMB2_MAX_EA_BUF, ea_name);
592 smb2_set_ea(const unsigned int xid, struct cifs_tcon *tcon,
593 const char *path, const char *ea_name, const void *ea_value,
594 const __u16 ea_value_len, const struct nls_table *nls_codepage,
595 struct cifs_sb_info *cifs_sb)
599 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
600 struct cifs_open_parms oparms;
602 struct smb2_file_full_ea_info *ea;
603 int ea_name_len = strlen(ea_name);
606 if (ea_name_len > 255)
609 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
614 oparms.desired_access = FILE_WRITE_EA;
615 oparms.disposition = FILE_OPEN;
616 oparms.create_options = 0;
618 oparms.reconnect = false;
620 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL);
623 cifs_dbg(FYI, "open failed rc=%d\n", rc);
627 len = sizeof(ea) + ea_name_len + ea_value_len + 1;
628 ea = kzalloc(len, GFP_KERNEL);
630 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
634 ea->ea_name_length = ea_name_len;
635 ea->ea_value_length = cpu_to_le16(ea_value_len);
636 memcpy(ea->ea_data, ea_name, ea_name_len + 1);
637 memcpy(ea->ea_data + ea_name_len + 1, ea_value, ea_value_len);
639 rc = SMB2_set_ea(xid, tcon, fid.persistent_fid, fid.volatile_fid, ea,
641 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
648 smb2_can_echo(struct TCP_Server_Info *server)
650 return server->echoes;
654 smb2_clear_stats(struct cifs_tcon *tcon)
656 #ifdef CONFIG_CIFS_STATS
658 for (i = 0; i < NUMBER_OF_SMB2_COMMANDS; i++) {
659 atomic_set(&tcon->stats.smb2_stats.smb2_com_sent[i], 0);
660 atomic_set(&tcon->stats.smb2_stats.smb2_com_failed[i], 0);
666 smb2_dump_share_caps(struct seq_file *m, struct cifs_tcon *tcon)
668 seq_puts(m, "\n\tShare Capabilities:");
669 if (tcon->capabilities & SMB2_SHARE_CAP_DFS)
670 seq_puts(m, " DFS,");
671 if (tcon->capabilities & SMB2_SHARE_CAP_CONTINUOUS_AVAILABILITY)
672 seq_puts(m, " CONTINUOUS AVAILABILITY,");
673 if (tcon->capabilities & SMB2_SHARE_CAP_SCALEOUT)
674 seq_puts(m, " SCALEOUT,");
675 if (tcon->capabilities & SMB2_SHARE_CAP_CLUSTER)
676 seq_puts(m, " CLUSTER,");
677 if (tcon->capabilities & SMB2_SHARE_CAP_ASYMMETRIC)
678 seq_puts(m, " ASYMMETRIC,");
679 if (tcon->capabilities == 0)
680 seq_puts(m, " None");
681 if (tcon->ss_flags & SSINFO_FLAGS_ALIGNED_DEVICE)
682 seq_puts(m, " Aligned,");
683 if (tcon->ss_flags & SSINFO_FLAGS_PARTITION_ALIGNED_ON_DEVICE)
684 seq_puts(m, " Partition Aligned,");
685 if (tcon->ss_flags & SSINFO_FLAGS_NO_SEEK_PENALTY)
686 seq_puts(m, " SSD,");
687 if (tcon->ss_flags & SSINFO_FLAGS_TRIM_ENABLED)
688 seq_puts(m, " TRIM-support,");
690 seq_printf(m, "\tShare Flags: 0x%x", tcon->share_flags);
691 if (tcon->perf_sector_size)
692 seq_printf(m, "\tOptimal sector size: 0x%x",
693 tcon->perf_sector_size);
697 smb2_print_stats(struct seq_file *m, struct cifs_tcon *tcon)
699 #ifdef CONFIG_CIFS_STATS
700 atomic_t *sent = tcon->stats.smb2_stats.smb2_com_sent;
701 atomic_t *failed = tcon->stats.smb2_stats.smb2_com_failed;
702 seq_printf(m, "\nNegotiates: %d sent %d failed",
703 atomic_read(&sent[SMB2_NEGOTIATE_HE]),
704 atomic_read(&failed[SMB2_NEGOTIATE_HE]));
705 seq_printf(m, "\nSessionSetups: %d sent %d failed",
706 atomic_read(&sent[SMB2_SESSION_SETUP_HE]),
707 atomic_read(&failed[SMB2_SESSION_SETUP_HE]));
708 seq_printf(m, "\nLogoffs: %d sent %d failed",
709 atomic_read(&sent[SMB2_LOGOFF_HE]),
710 atomic_read(&failed[SMB2_LOGOFF_HE]));
711 seq_printf(m, "\nTreeConnects: %d sent %d failed",
712 atomic_read(&sent[SMB2_TREE_CONNECT_HE]),
713 atomic_read(&failed[SMB2_TREE_CONNECT_HE]));
714 seq_printf(m, "\nTreeDisconnects: %d sent %d failed",
715 atomic_read(&sent[SMB2_TREE_DISCONNECT_HE]),
716 atomic_read(&failed[SMB2_TREE_DISCONNECT_HE]));
717 seq_printf(m, "\nCreates: %d sent %d failed",
718 atomic_read(&sent[SMB2_CREATE_HE]),
719 atomic_read(&failed[SMB2_CREATE_HE]));
720 seq_printf(m, "\nCloses: %d sent %d failed",
721 atomic_read(&sent[SMB2_CLOSE_HE]),
722 atomic_read(&failed[SMB2_CLOSE_HE]));
723 seq_printf(m, "\nFlushes: %d sent %d failed",
724 atomic_read(&sent[SMB2_FLUSH_HE]),
725 atomic_read(&failed[SMB2_FLUSH_HE]));
726 seq_printf(m, "\nReads: %d sent %d failed",
727 atomic_read(&sent[SMB2_READ_HE]),
728 atomic_read(&failed[SMB2_READ_HE]));
729 seq_printf(m, "\nWrites: %d sent %d failed",
730 atomic_read(&sent[SMB2_WRITE_HE]),
731 atomic_read(&failed[SMB2_WRITE_HE]));
732 seq_printf(m, "\nLocks: %d sent %d failed",
733 atomic_read(&sent[SMB2_LOCK_HE]),
734 atomic_read(&failed[SMB2_LOCK_HE]));
735 seq_printf(m, "\nIOCTLs: %d sent %d failed",
736 atomic_read(&sent[SMB2_IOCTL_HE]),
737 atomic_read(&failed[SMB2_IOCTL_HE]));
738 seq_printf(m, "\nCancels: %d sent %d failed",
739 atomic_read(&sent[SMB2_CANCEL_HE]),
740 atomic_read(&failed[SMB2_CANCEL_HE]));
741 seq_printf(m, "\nEchos: %d sent %d failed",
742 atomic_read(&sent[SMB2_ECHO_HE]),
743 atomic_read(&failed[SMB2_ECHO_HE]));
744 seq_printf(m, "\nQueryDirectories: %d sent %d failed",
745 atomic_read(&sent[SMB2_QUERY_DIRECTORY_HE]),
746 atomic_read(&failed[SMB2_QUERY_DIRECTORY_HE]));
747 seq_printf(m, "\nChangeNotifies: %d sent %d failed",
748 atomic_read(&sent[SMB2_CHANGE_NOTIFY_HE]),
749 atomic_read(&failed[SMB2_CHANGE_NOTIFY_HE]));
750 seq_printf(m, "\nQueryInfos: %d sent %d failed",
751 atomic_read(&sent[SMB2_QUERY_INFO_HE]),
752 atomic_read(&failed[SMB2_QUERY_INFO_HE]));
753 seq_printf(m, "\nSetInfos: %d sent %d failed",
754 atomic_read(&sent[SMB2_SET_INFO_HE]),
755 atomic_read(&failed[SMB2_SET_INFO_HE]));
756 seq_printf(m, "\nOplockBreaks: %d sent %d failed",
757 atomic_read(&sent[SMB2_OPLOCK_BREAK_HE]),
758 atomic_read(&failed[SMB2_OPLOCK_BREAK_HE]));
763 smb2_set_fid(struct cifsFileInfo *cfile, struct cifs_fid *fid, __u32 oplock)
765 struct cifsInodeInfo *cinode = CIFS_I(d_inode(cfile->dentry));
766 struct TCP_Server_Info *server = tlink_tcon(cfile->tlink)->ses->server;
768 cfile->fid.persistent_fid = fid->persistent_fid;
769 cfile->fid.volatile_fid = fid->volatile_fid;
770 server->ops->set_oplock_level(cinode, oplock, fid->epoch,
772 cinode->can_cache_brlcks = CIFS_CACHE_WRITE(cinode);
773 memcpy(cfile->fid.create_guid, fid->create_guid, 16);
777 smb2_close_file(const unsigned int xid, struct cifs_tcon *tcon,
778 struct cifs_fid *fid)
780 SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
784 SMB2_request_res_key(const unsigned int xid, struct cifs_tcon *tcon,
785 u64 persistent_fid, u64 volatile_fid,
786 struct copychunk_ioctl *pcchunk)
789 unsigned int ret_data_len;
790 struct resume_key_req *res_key;
792 rc = SMB2_ioctl(xid, tcon, persistent_fid, volatile_fid,
793 FSCTL_SRV_REQUEST_RESUME_KEY, true /* is_fsctl */,
794 NULL, 0 /* no input */,
795 (char **)&res_key, &ret_data_len);
798 cifs_dbg(VFS, "refcpy ioctl error %d getting resume key\n", rc);
799 goto req_res_key_exit;
801 if (ret_data_len < sizeof(struct resume_key_req)) {
802 cifs_dbg(VFS, "Invalid refcopy resume key length\n");
804 goto req_res_key_exit;
806 memcpy(pcchunk->SourceKey, res_key->ResumeKey, COPY_CHUNK_RES_KEY_SIZE);
814 smb2_copychunk_range(const unsigned int xid,
815 struct cifsFileInfo *srcfile,
816 struct cifsFileInfo *trgtfile, u64 src_off,
817 u64 len, u64 dest_off)
820 unsigned int ret_data_len;
821 struct copychunk_ioctl *pcchunk;
822 struct copychunk_ioctl_rsp *retbuf = NULL;
823 struct cifs_tcon *tcon;
824 int chunks_copied = 0;
825 bool chunk_sizes_updated = false;
826 ssize_t bytes_written, total_bytes_written = 0;
828 pcchunk = kmalloc(sizeof(struct copychunk_ioctl), GFP_KERNEL);
833 cifs_dbg(FYI, "in smb2_copychunk_range - about to call request res key\n");
834 /* Request a key from the server to identify the source of the copy */
835 rc = SMB2_request_res_key(xid, tlink_tcon(srcfile->tlink),
836 srcfile->fid.persistent_fid,
837 srcfile->fid.volatile_fid, pcchunk);
839 /* Note: request_res_key sets res_key null only if rc !=0 */
843 /* For now array only one chunk long, will make more flexible later */
844 pcchunk->ChunkCount = cpu_to_le32(1);
845 pcchunk->Reserved = 0;
846 pcchunk->Reserved2 = 0;
848 tcon = tlink_tcon(trgtfile->tlink);
851 pcchunk->SourceOffset = cpu_to_le64(src_off);
852 pcchunk->TargetOffset = cpu_to_le64(dest_off);
854 cpu_to_le32(min_t(u32, len, tcon->max_bytes_chunk));
856 /* Request server copy to target from src identified by key */
857 rc = SMB2_ioctl(xid, tcon, trgtfile->fid.persistent_fid,
858 trgtfile->fid.volatile_fid, FSCTL_SRV_COPYCHUNK_WRITE,
859 true /* is_fsctl */, (char *)pcchunk,
860 sizeof(struct copychunk_ioctl), (char **)&retbuf,
864 sizeof(struct copychunk_ioctl_rsp)) {
865 cifs_dbg(VFS, "invalid cchunk response size\n");
869 if (retbuf->TotalBytesWritten == 0) {
870 cifs_dbg(FYI, "no bytes copied\n");
875 * Check if server claimed to write more than we asked
877 if (le32_to_cpu(retbuf->TotalBytesWritten) >
878 le32_to_cpu(pcchunk->Length)) {
879 cifs_dbg(VFS, "invalid copy chunk response\n");
883 if (le32_to_cpu(retbuf->ChunksWritten) != 1) {
884 cifs_dbg(VFS, "invalid num chunks written\n");
890 bytes_written = le32_to_cpu(retbuf->TotalBytesWritten);
891 src_off += bytes_written;
892 dest_off += bytes_written;
893 len -= bytes_written;
894 total_bytes_written += bytes_written;
896 cifs_dbg(FYI, "Chunks %d PartialChunk %d Total %zu\n",
897 le32_to_cpu(retbuf->ChunksWritten),
898 le32_to_cpu(retbuf->ChunkBytesWritten),
900 } else if (rc == -EINVAL) {
901 if (ret_data_len != sizeof(struct copychunk_ioctl_rsp))
904 cifs_dbg(FYI, "MaxChunks %d BytesChunk %d MaxCopy %d\n",
905 le32_to_cpu(retbuf->ChunksWritten),
906 le32_to_cpu(retbuf->ChunkBytesWritten),
907 le32_to_cpu(retbuf->TotalBytesWritten));
910 * Check if this is the first request using these sizes,
911 * (ie check if copy succeed once with original sizes
912 * and check if the server gave us different sizes after
913 * we already updated max sizes on previous request).
914 * if not then why is the server returning an error now
916 if ((chunks_copied != 0) || chunk_sizes_updated)
919 /* Check that server is not asking us to grow size */
920 if (le32_to_cpu(retbuf->ChunkBytesWritten) <
921 tcon->max_bytes_chunk)
922 tcon->max_bytes_chunk =
923 le32_to_cpu(retbuf->ChunkBytesWritten);
925 goto cchunk_out; /* server gave us bogus size */
927 /* No need to change MaxChunks since already set to 1 */
928 chunk_sizes_updated = true;
939 return total_bytes_written;
943 smb2_flush_file(const unsigned int xid, struct cifs_tcon *tcon,
944 struct cifs_fid *fid)
946 return SMB2_flush(xid, tcon, fid->persistent_fid, fid->volatile_fid);
950 smb2_read_data_offset(char *buf)
952 struct smb2_read_rsp *rsp = (struct smb2_read_rsp *)buf;
953 return rsp->DataOffset;
957 smb2_read_data_length(char *buf, bool in_remaining)
959 struct smb2_read_rsp *rsp = (struct smb2_read_rsp *)buf;
962 return le32_to_cpu(rsp->DataRemaining);
964 return le32_to_cpu(rsp->DataLength);
969 smb2_sync_read(const unsigned int xid, struct cifs_fid *pfid,
970 struct cifs_io_parms *parms, unsigned int *bytes_read,
971 char **buf, int *buf_type)
973 parms->persistent_fid = pfid->persistent_fid;
974 parms->volatile_fid = pfid->volatile_fid;
975 return SMB2_read(xid, parms, bytes_read, buf, buf_type);
979 smb2_sync_write(const unsigned int xid, struct cifs_fid *pfid,
980 struct cifs_io_parms *parms, unsigned int *written,
981 struct kvec *iov, unsigned long nr_segs)
984 parms->persistent_fid = pfid->persistent_fid;
985 parms->volatile_fid = pfid->volatile_fid;
986 return SMB2_write(xid, parms, written, iov, nr_segs);
989 /* Set or clear the SPARSE_FILE attribute based on value passed in setsparse */
990 static bool smb2_set_sparse(const unsigned int xid, struct cifs_tcon *tcon,
991 struct cifsFileInfo *cfile, struct inode *inode, __u8 setsparse)
993 struct cifsInodeInfo *cifsi;
996 cifsi = CIFS_I(inode);
998 /* if file already sparse don't bother setting sparse again */
999 if ((cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) && setsparse)
1000 return true; /* already sparse */
1002 if (!(cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) && !setsparse)
1003 return true; /* already not sparse */
1006 * Can't check for sparse support on share the usual way via the
1007 * FS attribute info (FILE_SUPPORTS_SPARSE_FILES) on the share
1008 * since Samba server doesn't set the flag on the share, yet
1009 * supports the set sparse FSCTL and returns sparse correctly
1010 * in the file attributes. If we fail setting sparse though we
1011 * mark that server does not support sparse files for this share
1012 * to avoid repeatedly sending the unsupported fsctl to server
1013 * if the file is repeatedly extended.
1015 if (tcon->broken_sparse_sup)
1018 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
1019 cfile->fid.volatile_fid, FSCTL_SET_SPARSE,
1021 &setsparse, 1, NULL, NULL);
1023 tcon->broken_sparse_sup = true;
1024 cifs_dbg(FYI, "set sparse rc = %d\n", rc);
1029 cifsi->cifsAttrs |= FILE_ATTRIBUTE_SPARSE_FILE;
1031 cifsi->cifsAttrs &= (~FILE_ATTRIBUTE_SPARSE_FILE);
1037 smb2_set_file_size(const unsigned int xid, struct cifs_tcon *tcon,
1038 struct cifsFileInfo *cfile, __u64 size, bool set_alloc)
1040 __le64 eof = cpu_to_le64(size);
1041 struct inode *inode;
1044 * If extending file more than one page make sparse. Many Linux fs
1045 * make files sparse by default when extending via ftruncate
1047 inode = d_inode(cfile->dentry);
1049 if (!set_alloc && (size > inode->i_size + 8192)) {
1050 __u8 set_sparse = 1;
1052 /* whether set sparse succeeds or not, extend the file */
1053 smb2_set_sparse(xid, tcon, cfile, inode, set_sparse);
1056 return SMB2_set_eof(xid, tcon, cfile->fid.persistent_fid,
1057 cfile->fid.volatile_fid, cfile->pid, &eof, false);
1061 smb2_duplicate_extents(const unsigned int xid,
1062 struct cifsFileInfo *srcfile,
1063 struct cifsFileInfo *trgtfile, u64 src_off,
1064 u64 len, u64 dest_off)
1067 unsigned int ret_data_len;
1068 struct duplicate_extents_to_file dup_ext_buf;
1069 struct cifs_tcon *tcon = tlink_tcon(trgtfile->tlink);
1071 /* server fileays advertise duplicate extent support with this flag */
1072 if ((le32_to_cpu(tcon->fsAttrInfo.Attributes) &
1073 FILE_SUPPORTS_BLOCK_REFCOUNTING) == 0)
1076 dup_ext_buf.VolatileFileHandle = srcfile->fid.volatile_fid;
1077 dup_ext_buf.PersistentFileHandle = srcfile->fid.persistent_fid;
1078 dup_ext_buf.SourceFileOffset = cpu_to_le64(src_off);
1079 dup_ext_buf.TargetFileOffset = cpu_to_le64(dest_off);
1080 dup_ext_buf.ByteCount = cpu_to_le64(len);
1081 cifs_dbg(FYI, "duplicate extents: src off %lld dst off %lld len %lld",
1082 src_off, dest_off, len);
1084 rc = smb2_set_file_size(xid, tcon, trgtfile, dest_off + len, false);
1086 goto duplicate_extents_out;
1088 rc = SMB2_ioctl(xid, tcon, trgtfile->fid.persistent_fid,
1089 trgtfile->fid.volatile_fid,
1090 FSCTL_DUPLICATE_EXTENTS_TO_FILE,
1091 true /* is_fsctl */,
1092 (char *)&dup_ext_buf,
1093 sizeof(struct duplicate_extents_to_file),
1097 if (ret_data_len > 0)
1098 cifs_dbg(FYI, "non-zero response length in duplicate extents");
1100 duplicate_extents_out:
1105 smb2_set_compression(const unsigned int xid, struct cifs_tcon *tcon,
1106 struct cifsFileInfo *cfile)
1108 return SMB2_set_compression(xid, tcon, cfile->fid.persistent_fid,
1109 cfile->fid.volatile_fid);
1113 smb3_set_integrity(const unsigned int xid, struct cifs_tcon *tcon,
1114 struct cifsFileInfo *cfile)
1116 struct fsctl_set_integrity_information_req integr_info;
1117 unsigned int ret_data_len;
1119 integr_info.ChecksumAlgorithm = cpu_to_le16(CHECKSUM_TYPE_UNCHANGED);
1120 integr_info.Flags = 0;
1121 integr_info.Reserved = 0;
1123 return SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
1124 cfile->fid.volatile_fid,
1125 FSCTL_SET_INTEGRITY_INFORMATION,
1126 true /* is_fsctl */,
1127 (char *)&integr_info,
1128 sizeof(struct fsctl_set_integrity_information_req),
1135 smb3_enum_snapshots(const unsigned int xid, struct cifs_tcon *tcon,
1136 struct cifsFileInfo *cfile, void __user *ioc_buf)
1138 char *retbuf = NULL;
1139 unsigned int ret_data_len = 0;
1141 struct smb_snapshot_array snapshot_in;
1143 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
1144 cfile->fid.volatile_fid,
1145 FSCTL_SRV_ENUMERATE_SNAPSHOTS,
1146 true /* is_fsctl */,
1147 NULL, 0 /* no input data */,
1150 cifs_dbg(FYI, "enum snaphots ioctl returned %d and ret buflen is %d\n",
1155 if (ret_data_len && (ioc_buf != NULL) && (retbuf != NULL)) {
1157 if (copy_from_user(&snapshot_in, ioc_buf,
1158 sizeof(struct smb_snapshot_array))) {
1163 if (snapshot_in.snapshot_array_size < sizeof(struct smb_snapshot_array)) {
1169 if (ret_data_len > snapshot_in.snapshot_array_size)
1170 ret_data_len = snapshot_in.snapshot_array_size;
1172 if (copy_to_user(ioc_buf, retbuf, ret_data_len))
1181 smb2_query_dir_first(const unsigned int xid, struct cifs_tcon *tcon,
1182 const char *path, struct cifs_sb_info *cifs_sb,
1183 struct cifs_fid *fid, __u16 search_flags,
1184 struct cifs_search_info *srch_inf)
1188 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
1189 struct cifs_open_parms oparms;
1191 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
1196 oparms.desired_access = FILE_READ_ATTRIBUTES | FILE_READ_DATA;
1197 oparms.disposition = FILE_OPEN;
1198 oparms.create_options = 0;
1200 oparms.reconnect = false;
1202 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL);
1205 cifs_dbg(FYI, "open dir failed rc=%d\n", rc);
1209 srch_inf->entries_in_buffer = 0;
1210 srch_inf->index_of_last_entry = 0;
1212 rc = SMB2_query_directory(xid, tcon, fid->persistent_fid,
1213 fid->volatile_fid, 0, srch_inf);
1215 cifs_dbg(FYI, "query directory failed rc=%d\n", rc);
1216 SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
1222 smb2_query_dir_next(const unsigned int xid, struct cifs_tcon *tcon,
1223 struct cifs_fid *fid, __u16 search_flags,
1224 struct cifs_search_info *srch_inf)
1226 return SMB2_query_directory(xid, tcon, fid->persistent_fid,
1227 fid->volatile_fid, 0, srch_inf);
1231 smb2_close_dir(const unsigned int xid, struct cifs_tcon *tcon,
1232 struct cifs_fid *fid)
1234 return SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
1238 * If we negotiate SMB2 protocol and get STATUS_PENDING - update
1239 * the number of credits and return true. Otherwise - return false.
1242 smb2_is_status_pending(char *buf, struct TCP_Server_Info *server, int length)
1244 struct smb2_sync_hdr *shdr = get_sync_hdr(buf);
1246 if (shdr->Status != STATUS_PENDING)
1250 spin_lock(&server->req_lock);
1251 server->credits += le16_to_cpu(shdr->CreditRequest);
1252 spin_unlock(&server->req_lock);
1253 wake_up(&server->request_q);
1260 smb2_is_session_expired(char *buf)
1262 struct smb2_sync_hdr *shdr = get_sync_hdr(buf);
1264 if (shdr->Status != STATUS_NETWORK_SESSION_EXPIRED)
1267 cifs_dbg(FYI, "Session expired\n");
1272 smb2_oplock_response(struct cifs_tcon *tcon, struct cifs_fid *fid,
1273 struct cifsInodeInfo *cinode)
1275 if (tcon->ses->server->capabilities & SMB2_GLOBAL_CAP_LEASING)
1276 return SMB2_lease_break(0, tcon, cinode->lease_key,
1277 smb2_get_lease_state(cinode));
1279 return SMB2_oplock_break(0, tcon, fid->persistent_fid,
1281 CIFS_CACHE_READ(cinode) ? 1 : 0);
1285 smb2_queryfs(const unsigned int xid, struct cifs_tcon *tcon,
1286 struct kstatfs *buf)
1289 __le16 srch_path = 0; /* Null - open root of share */
1290 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
1291 struct cifs_open_parms oparms;
1292 struct cifs_fid fid;
1295 oparms.desired_access = FILE_READ_ATTRIBUTES;
1296 oparms.disposition = FILE_OPEN;
1297 oparms.create_options = 0;
1299 oparms.reconnect = false;
1301 rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL);
1304 buf->f_type = SMB2_MAGIC_NUMBER;
1305 rc = SMB2_QFS_info(xid, tcon, fid.persistent_fid, fid.volatile_fid,
1307 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
1312 smb2_compare_fids(struct cifsFileInfo *ob1, struct cifsFileInfo *ob2)
1314 return ob1->fid.persistent_fid == ob2->fid.persistent_fid &&
1315 ob1->fid.volatile_fid == ob2->fid.volatile_fid;
1319 smb2_mand_lock(const unsigned int xid, struct cifsFileInfo *cfile, __u64 offset,
1320 __u64 length, __u32 type, int lock, int unlock, bool wait)
1322 if (unlock && !lock)
1323 type = SMB2_LOCKFLAG_UNLOCK;
1324 return SMB2_lock(xid, tlink_tcon(cfile->tlink),
1325 cfile->fid.persistent_fid, cfile->fid.volatile_fid,
1326 current->tgid, length, offset, type, wait);
1330 smb2_get_lease_key(struct inode *inode, struct cifs_fid *fid)
1332 memcpy(fid->lease_key, CIFS_I(inode)->lease_key, SMB2_LEASE_KEY_SIZE);
1336 smb2_set_lease_key(struct inode *inode, struct cifs_fid *fid)
1338 memcpy(CIFS_I(inode)->lease_key, fid->lease_key, SMB2_LEASE_KEY_SIZE);
1342 smb2_new_lease_key(struct cifs_fid *fid)
1344 generate_random_uuid(fid->lease_key);
1348 smb2_get_dfs_refer(const unsigned int xid, struct cifs_ses *ses,
1349 const char *search_name,
1350 struct dfs_info3_param **target_nodes,
1351 unsigned int *num_of_nodes,
1352 const struct nls_table *nls_codepage, int remap)
1355 __le16 *utf16_path = NULL;
1356 int utf16_path_len = 0;
1357 struct cifs_tcon *tcon;
1358 struct fsctl_get_dfs_referral_req *dfs_req = NULL;
1359 struct get_dfs_referral_rsp *dfs_rsp = NULL;
1360 u32 dfs_req_size = 0, dfs_rsp_size = 0;
1362 cifs_dbg(FYI, "smb2_get_dfs_refer path <%s>\n", search_name);
1365 * Try to use the IPC tcon, otherwise just use any
1367 tcon = ses->tcon_ipc;
1369 spin_lock(&cifs_tcp_ses_lock);
1370 tcon = list_first_entry_or_null(&ses->tcon_list,
1375 spin_unlock(&cifs_tcp_ses_lock);
1379 cifs_dbg(VFS, "session %p has no tcon available for a dfs referral request\n",
1385 utf16_path = cifs_strndup_to_utf16(search_name, PATH_MAX,
1387 nls_codepage, remap);
1393 dfs_req_size = sizeof(*dfs_req) + utf16_path_len;
1394 dfs_req = kzalloc(dfs_req_size, GFP_KERNEL);
1400 /* Highest DFS referral version understood */
1401 dfs_req->MaxReferralLevel = DFS_VERSION;
1403 /* Path to resolve in an UTF-16 null-terminated string */
1404 memcpy(dfs_req->RequestFileName, utf16_path, utf16_path_len);
1407 rc = SMB2_ioctl(xid, tcon, NO_FILE_ID, NO_FILE_ID,
1408 FSCTL_DFS_GET_REFERRALS,
1409 true /* is_fsctl */,
1410 (char *)dfs_req, dfs_req_size,
1411 (char **)&dfs_rsp, &dfs_rsp_size);
1412 } while (rc == -EAGAIN);
1415 if ((rc != -ENOENT) && (rc != -EOPNOTSUPP))
1416 cifs_dbg(VFS, "ioctl error in smb2_get_dfs_refer rc=%d\n", rc);
1420 rc = parse_dfs_referrals(dfs_rsp, dfs_rsp_size,
1421 num_of_nodes, target_nodes,
1422 nls_codepage, remap, search_name,
1423 true /* is_unicode */);
1425 cifs_dbg(VFS, "parse error in smb2_get_dfs_refer rc=%d\n", rc);
1430 if (tcon && !tcon->ipc) {
1431 /* ipc tcons are not refcounted */
1432 spin_lock(&cifs_tcp_ses_lock);
1434 spin_unlock(&cifs_tcp_ses_lock);
1441 #define SMB2_SYMLINK_STRUCT_SIZE \
1442 (sizeof(struct smb2_err_rsp) - 1 + sizeof(struct smb2_symlink_err_rsp))
1445 smb2_query_symlink(const unsigned int xid, struct cifs_tcon *tcon,
1446 const char *full_path, char **target_path,
1447 struct cifs_sb_info *cifs_sb)
1451 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
1452 struct cifs_open_parms oparms;
1453 struct cifs_fid fid;
1454 struct smb2_err_rsp *err_buf = NULL;
1455 struct smb2_symlink_err_rsp *symlink;
1456 unsigned int sub_len;
1457 unsigned int sub_offset;
1458 unsigned int print_len;
1459 unsigned int print_offset;
1460 struct cifs_ses *ses = tcon->ses;
1461 struct TCP_Server_Info *server = ses->server;
1463 cifs_dbg(FYI, "%s: path: %s\n", __func__, full_path);
1465 utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb);
1470 oparms.desired_access = FILE_READ_ATTRIBUTES;
1471 oparms.disposition = FILE_OPEN;
1472 oparms.create_options = 0;
1474 oparms.reconnect = false;
1476 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, &err_buf);
1478 if (!rc || !err_buf) {
1483 if (le32_to_cpu(err_buf->ByteCount) < sizeof(struct smb2_symlink_err_rsp) ||
1484 get_rfc1002_length(err_buf) + server->vals->header_preamble_size < SMB2_SYMLINK_STRUCT_SIZE) {
1489 /* open must fail on symlink - reset rc */
1491 symlink = (struct smb2_symlink_err_rsp *)err_buf->ErrorData;
1492 sub_len = le16_to_cpu(symlink->SubstituteNameLength);
1493 sub_offset = le16_to_cpu(symlink->SubstituteNameOffset);
1494 print_len = le16_to_cpu(symlink->PrintNameLength);
1495 print_offset = le16_to_cpu(symlink->PrintNameOffset);
1497 if (get_rfc1002_length(err_buf) + server->vals->header_preamble_size <
1498 SMB2_SYMLINK_STRUCT_SIZE + sub_offset + sub_len) {
1503 if (get_rfc1002_length(err_buf) + server->vals->header_preamble_size <
1504 SMB2_SYMLINK_STRUCT_SIZE + print_offset + print_len) {
1509 *target_path = cifs_strndup_from_utf16(
1510 (char *)symlink->PathBuffer + sub_offset,
1511 sub_len, true, cifs_sb->local_nls);
1512 if (!(*target_path)) {
1516 convert_delimiter(*target_path, '/');
1517 cifs_dbg(FYI, "%s: target path: %s\n", __func__, *target_path);
1522 #ifdef CONFIG_CIFS_ACL
1523 static struct cifs_ntsd *
1524 get_smb2_acl_by_fid(struct cifs_sb_info *cifs_sb,
1525 const struct cifs_fid *cifsfid, u32 *pacllen)
1527 struct cifs_ntsd *pntsd = NULL;
1529 int rc = -EOPNOTSUPP;
1530 struct tcon_link *tlink = cifs_sb_tlink(cifs_sb);
1533 return ERR_CAST(tlink);
1536 cifs_dbg(FYI, "trying to get acl\n");
1538 rc = SMB2_query_acl(xid, tlink_tcon(tlink), cifsfid->persistent_fid,
1539 cifsfid->volatile_fid, (void **)&pntsd, pacllen);
1542 cifs_put_tlink(tlink);
1544 cifs_dbg(FYI, "%s: rc = %d ACL len %d\n", __func__, rc, *pacllen);
1551 static struct cifs_ntsd *
1552 get_smb2_acl_by_path(struct cifs_sb_info *cifs_sb,
1553 const char *path, u32 *pacllen)
1555 struct cifs_ntsd *pntsd = NULL;
1556 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
1559 struct cifs_tcon *tcon;
1560 struct tcon_link *tlink = cifs_sb_tlink(cifs_sb);
1561 struct cifs_fid fid;
1562 struct cifs_open_parms oparms;
1565 cifs_dbg(FYI, "get smb3 acl for path %s\n", path);
1567 return ERR_CAST(tlink);
1569 tcon = tlink_tcon(tlink);
1572 if (backup_cred(cifs_sb))
1573 oparms.create_options = CREATE_OPEN_BACKUP_INTENT;
1575 oparms.create_options = 0;
1577 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
1579 return ERR_PTR(-ENOMEM);
1582 oparms.desired_access = READ_CONTROL;
1583 oparms.disposition = FILE_OPEN;
1585 oparms.reconnect = false;
1587 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL);
1590 rc = SMB2_query_acl(xid, tlink_tcon(tlink), fid.persistent_fid,
1591 fid.volatile_fid, (void **)&pntsd, pacllen);
1592 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
1595 cifs_put_tlink(tlink);
1598 cifs_dbg(FYI, "%s: rc = %d ACL len %d\n", __func__, rc, *pacllen);
1604 #ifdef CONFIG_CIFS_ACL
1606 set_smb2_acl(struct cifs_ntsd *pnntsd, __u32 acllen,
1607 struct inode *inode, const char *path, int aclflag)
1609 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
1611 int rc, access_flags = 0;
1612 struct cifs_tcon *tcon;
1613 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
1614 struct tcon_link *tlink = cifs_sb_tlink(cifs_sb);
1615 struct cifs_fid fid;
1616 struct cifs_open_parms oparms;
1619 cifs_dbg(FYI, "set smb3 acl for path %s\n", path);
1621 return PTR_ERR(tlink);
1623 tcon = tlink_tcon(tlink);
1626 if (backup_cred(cifs_sb))
1627 oparms.create_options = CREATE_OPEN_BACKUP_INTENT;
1629 oparms.create_options = 0;
1631 if (aclflag == CIFS_ACL_OWNER || aclflag == CIFS_ACL_GROUP)
1632 access_flags = WRITE_OWNER;
1634 access_flags = WRITE_DAC;
1636 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
1641 oparms.desired_access = access_flags;
1642 oparms.disposition = FILE_OPEN;
1645 oparms.reconnect = false;
1647 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL);
1650 rc = SMB2_set_acl(xid, tlink_tcon(tlink), fid.persistent_fid,
1651 fid.volatile_fid, pnntsd, acllen, aclflag);
1652 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
1655 cifs_put_tlink(tlink);
1659 #endif /* CIFS_ACL */
1661 /* Retrieve an ACL from the server */
1662 static struct cifs_ntsd *
1663 get_smb2_acl(struct cifs_sb_info *cifs_sb,
1664 struct inode *inode, const char *path,
1667 struct cifs_ntsd *pntsd = NULL;
1668 struct cifsFileInfo *open_file = NULL;
1671 open_file = find_readable_file(CIFS_I(inode), true);
1673 return get_smb2_acl_by_path(cifs_sb, path, pacllen);
1675 pntsd = get_smb2_acl_by_fid(cifs_sb, &open_file->fid, pacllen);
1676 cifsFileInfo_put(open_file);
1681 static long smb3_zero_range(struct file *file, struct cifs_tcon *tcon,
1682 loff_t offset, loff_t len, bool keep_size)
1684 struct inode *inode;
1685 struct cifsInodeInfo *cifsi;
1686 struct cifsFileInfo *cfile = file->private_data;
1687 struct file_zero_data_information fsctl_buf;
1693 inode = d_inode(cfile->dentry);
1694 cifsi = CIFS_I(inode);
1696 /* if file not oplocked can't be sure whether asking to extend size */
1697 if (!CIFS_CACHE_READ(cifsi))
1698 if (keep_size == false)
1702 * Must check if file sparse since fallocate -z (zero range) assumes
1703 * non-sparse allocation
1705 if (!(cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE))
1709 * need to make sure we are not asked to extend the file since the SMB3
1710 * fsctl does not change the file size. In the future we could change
1711 * this to zero the first part of the range then set the file size
1712 * which for a non sparse file would zero the newly extended range
1714 if (keep_size == false)
1715 if (i_size_read(inode) < offset + len)
1718 cifs_dbg(FYI, "offset %lld len %lld", offset, len);
1720 fsctl_buf.FileOffset = cpu_to_le64(offset);
1721 fsctl_buf.BeyondFinalZero = cpu_to_le64(offset + len);
1723 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
1724 cfile->fid.volatile_fid, FSCTL_SET_ZERO_DATA,
1725 true /* is_fctl */, (char *)&fsctl_buf,
1726 sizeof(struct file_zero_data_information), NULL, NULL);
1731 static long smb3_punch_hole(struct file *file, struct cifs_tcon *tcon,
1732 loff_t offset, loff_t len)
1734 struct inode *inode;
1735 struct cifsInodeInfo *cifsi;
1736 struct cifsFileInfo *cfile = file->private_data;
1737 struct file_zero_data_information fsctl_buf;
1740 __u8 set_sparse = 1;
1744 inode = d_inode(cfile->dentry);
1745 cifsi = CIFS_I(inode);
1747 /* Need to make file sparse, if not already, before freeing range. */
1748 /* Consider adding equivalent for compressed since it could also work */
1749 if (!smb2_set_sparse(xid, tcon, cfile, inode, set_sparse))
1752 cifs_dbg(FYI, "offset %lld len %lld", offset, len);
1754 fsctl_buf.FileOffset = cpu_to_le64(offset);
1755 fsctl_buf.BeyondFinalZero = cpu_to_le64(offset + len);
1757 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
1758 cfile->fid.volatile_fid, FSCTL_SET_ZERO_DATA,
1759 true /* is_fctl */, (char *)&fsctl_buf,
1760 sizeof(struct file_zero_data_information), NULL, NULL);
1765 static long smb3_simple_falloc(struct file *file, struct cifs_tcon *tcon,
1766 loff_t off, loff_t len, bool keep_size)
1768 struct inode *inode;
1769 struct cifsInodeInfo *cifsi;
1770 struct cifsFileInfo *cfile = file->private_data;
1771 long rc = -EOPNOTSUPP;
1776 inode = d_inode(cfile->dentry);
1777 cifsi = CIFS_I(inode);
1779 /* if file not oplocked can't be sure whether asking to extend size */
1780 if (!CIFS_CACHE_READ(cifsi))
1781 if (keep_size == false)
1785 * Files are non-sparse by default so falloc may be a no-op
1786 * Must check if file sparse. If not sparse, and not extending
1787 * then no need to do anything since file already allocated
1789 if ((cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) == 0) {
1790 if (keep_size == true)
1792 /* check if extending file */
1793 else if (i_size_read(inode) >= off + len)
1794 /* not extending file and already not sparse */
1796 /* BB: in future add else clause to extend file */
1801 if ((keep_size == true) || (i_size_read(inode) >= off + len)) {
1803 * Check if falloc starts within first few pages of file
1804 * and ends within a few pages of the end of file to
1805 * ensure that most of file is being forced to be
1806 * fallocated now. If so then setting whole file sparse
1807 * ie potentially making a few extra pages at the beginning
1808 * or end of the file non-sparse via set_sparse is harmless.
1810 if ((off > 8192) || (off + len + 8192 < i_size_read(inode)))
1813 rc = smb2_set_sparse(xid, tcon, cfile, inode, false);
1815 /* BB: else ... in future add code to extend file and set sparse */
1823 static long smb3_fallocate(struct file *file, struct cifs_tcon *tcon, int mode,
1824 loff_t off, loff_t len)
1826 /* KEEP_SIZE already checked for by do_fallocate */
1827 if (mode & FALLOC_FL_PUNCH_HOLE)
1828 return smb3_punch_hole(file, tcon, off, len);
1829 else if (mode & FALLOC_FL_ZERO_RANGE) {
1830 if (mode & FALLOC_FL_KEEP_SIZE)
1831 return smb3_zero_range(file, tcon, off, len, true);
1832 return smb3_zero_range(file, tcon, off, len, false);
1833 } else if (mode == FALLOC_FL_KEEP_SIZE)
1834 return smb3_simple_falloc(file, tcon, off, len, true);
1836 return smb3_simple_falloc(file, tcon, off, len, false);
1842 smb2_downgrade_oplock(struct TCP_Server_Info *server,
1843 struct cifsInodeInfo *cinode, bool set_level2)
1846 server->ops->set_oplock_level(cinode, SMB2_OPLOCK_LEVEL_II,
1849 server->ops->set_oplock_level(cinode, 0, 0, NULL);
1853 smb2_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
1854 unsigned int epoch, bool *purge_cache)
1857 if (oplock == SMB2_OPLOCK_LEVEL_NOCHANGE)
1859 if (oplock == SMB2_OPLOCK_LEVEL_BATCH) {
1860 cinode->oplock = CIFS_CACHE_RHW_FLG;
1861 cifs_dbg(FYI, "Batch Oplock granted on inode %p\n",
1862 &cinode->vfs_inode);
1863 } else if (oplock == SMB2_OPLOCK_LEVEL_EXCLUSIVE) {
1864 cinode->oplock = CIFS_CACHE_RW_FLG;
1865 cifs_dbg(FYI, "Exclusive Oplock granted on inode %p\n",
1866 &cinode->vfs_inode);
1867 } else if (oplock == SMB2_OPLOCK_LEVEL_II) {
1868 cinode->oplock = CIFS_CACHE_READ_FLG;
1869 cifs_dbg(FYI, "Level II Oplock granted on inode %p\n",
1870 &cinode->vfs_inode);
1876 smb21_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
1877 unsigned int epoch, bool *purge_cache)
1879 char message[5] = {0};
1882 if (oplock == SMB2_OPLOCK_LEVEL_NOCHANGE)
1886 if (oplock & SMB2_LEASE_READ_CACHING_HE) {
1887 cinode->oplock |= CIFS_CACHE_READ_FLG;
1888 strcat(message, "R");
1890 if (oplock & SMB2_LEASE_HANDLE_CACHING_HE) {
1891 cinode->oplock |= CIFS_CACHE_HANDLE_FLG;
1892 strcat(message, "H");
1894 if (oplock & SMB2_LEASE_WRITE_CACHING_HE) {
1895 cinode->oplock |= CIFS_CACHE_WRITE_FLG;
1896 strcat(message, "W");
1898 if (!cinode->oplock)
1899 strcat(message, "None");
1900 cifs_dbg(FYI, "%s Lease granted on inode %p\n", message,
1901 &cinode->vfs_inode);
1905 smb3_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
1906 unsigned int epoch, bool *purge_cache)
1908 unsigned int old_oplock = cinode->oplock;
1910 smb21_set_oplock_level(cinode, oplock, epoch, purge_cache);
1913 *purge_cache = false;
1914 if (old_oplock == CIFS_CACHE_READ_FLG) {
1915 if (cinode->oplock == CIFS_CACHE_READ_FLG &&
1916 (epoch - cinode->epoch > 0))
1917 *purge_cache = true;
1918 else if (cinode->oplock == CIFS_CACHE_RH_FLG &&
1919 (epoch - cinode->epoch > 1))
1920 *purge_cache = true;
1921 else if (cinode->oplock == CIFS_CACHE_RHW_FLG &&
1922 (epoch - cinode->epoch > 1))
1923 *purge_cache = true;
1924 else if (cinode->oplock == 0 &&
1925 (epoch - cinode->epoch > 0))
1926 *purge_cache = true;
1927 } else if (old_oplock == CIFS_CACHE_RH_FLG) {
1928 if (cinode->oplock == CIFS_CACHE_RH_FLG &&
1929 (epoch - cinode->epoch > 0))
1930 *purge_cache = true;
1931 else if (cinode->oplock == CIFS_CACHE_RHW_FLG &&
1932 (epoch - cinode->epoch > 1))
1933 *purge_cache = true;
1935 cinode->epoch = epoch;
1940 smb2_is_read_op(__u32 oplock)
1942 return oplock == SMB2_OPLOCK_LEVEL_II;
1946 smb21_is_read_op(__u32 oplock)
1948 return (oplock & SMB2_LEASE_READ_CACHING_HE) &&
1949 !(oplock & SMB2_LEASE_WRITE_CACHING_HE);
1953 map_oplock_to_lease(u8 oplock)
1955 if (oplock == SMB2_OPLOCK_LEVEL_EXCLUSIVE)
1956 return SMB2_LEASE_WRITE_CACHING | SMB2_LEASE_READ_CACHING;
1957 else if (oplock == SMB2_OPLOCK_LEVEL_II)
1958 return SMB2_LEASE_READ_CACHING;
1959 else if (oplock == SMB2_OPLOCK_LEVEL_BATCH)
1960 return SMB2_LEASE_HANDLE_CACHING | SMB2_LEASE_READ_CACHING |
1961 SMB2_LEASE_WRITE_CACHING;
1966 smb2_create_lease_buf(u8 *lease_key, u8 oplock)
1968 struct create_lease *buf;
1970 buf = kzalloc(sizeof(struct create_lease), GFP_KERNEL);
1974 buf->lcontext.LeaseKeyLow = cpu_to_le64(*((u64 *)lease_key));
1975 buf->lcontext.LeaseKeyHigh = cpu_to_le64(*((u64 *)(lease_key + 8)));
1976 buf->lcontext.LeaseState = map_oplock_to_lease(oplock);
1978 buf->ccontext.DataOffset = cpu_to_le16(offsetof
1979 (struct create_lease, lcontext));
1980 buf->ccontext.DataLength = cpu_to_le32(sizeof(struct lease_context));
1981 buf->ccontext.NameOffset = cpu_to_le16(offsetof
1982 (struct create_lease, Name));
1983 buf->ccontext.NameLength = cpu_to_le16(4);
1984 /* SMB2_CREATE_REQUEST_LEASE is "RqLs" */
1993 smb3_create_lease_buf(u8 *lease_key, u8 oplock)
1995 struct create_lease_v2 *buf;
1997 buf = kzalloc(sizeof(struct create_lease_v2), GFP_KERNEL);
2001 buf->lcontext.LeaseKeyLow = cpu_to_le64(*((u64 *)lease_key));
2002 buf->lcontext.LeaseKeyHigh = cpu_to_le64(*((u64 *)(lease_key + 8)));
2003 buf->lcontext.LeaseState = map_oplock_to_lease(oplock);
2005 buf->ccontext.DataOffset = cpu_to_le16(offsetof
2006 (struct create_lease_v2, lcontext));
2007 buf->ccontext.DataLength = cpu_to_le32(sizeof(struct lease_context_v2));
2008 buf->ccontext.NameOffset = cpu_to_le16(offsetof
2009 (struct create_lease_v2, Name));
2010 buf->ccontext.NameLength = cpu_to_le16(4);
2011 /* SMB2_CREATE_REQUEST_LEASE is "RqLs" */
2020 smb2_parse_lease_buf(void *buf, unsigned int *epoch)
2022 struct create_lease *lc = (struct create_lease *)buf;
2024 *epoch = 0; /* not used */
2025 if (lc->lcontext.LeaseFlags & SMB2_LEASE_FLAG_BREAK_IN_PROGRESS)
2026 return SMB2_OPLOCK_LEVEL_NOCHANGE;
2027 return le32_to_cpu(lc->lcontext.LeaseState);
2031 smb3_parse_lease_buf(void *buf, unsigned int *epoch)
2033 struct create_lease_v2 *lc = (struct create_lease_v2 *)buf;
2035 *epoch = le16_to_cpu(lc->lcontext.Epoch);
2036 if (lc->lcontext.LeaseFlags & SMB2_LEASE_FLAG_BREAK_IN_PROGRESS)
2037 return SMB2_OPLOCK_LEVEL_NOCHANGE;
2038 return le32_to_cpu(lc->lcontext.LeaseState);
2042 smb2_wp_retry_size(struct inode *inode)
2044 return min_t(unsigned int, CIFS_SB(inode->i_sb)->wsize,
2045 SMB2_MAX_BUFFER_SIZE);
2049 smb2_dir_needs_close(struct cifsFileInfo *cfile)
2051 return !cfile->invalidHandle;
2055 fill_transform_hdr(struct TCP_Server_Info *server,
2056 struct smb2_transform_hdr *tr_hdr, struct smb_rqst *old_rq)
2058 struct smb2_sync_hdr *shdr =
2059 (struct smb2_sync_hdr *)old_rq->rq_iov[1].iov_base;
2060 unsigned int orig_len = get_rfc1002_length(old_rq->rq_iov[0].iov_base);
2062 memset(tr_hdr, 0, sizeof(struct smb2_transform_hdr));
2063 tr_hdr->ProtocolId = SMB2_TRANSFORM_PROTO_NUM;
2064 tr_hdr->OriginalMessageSize = cpu_to_le32(orig_len);
2065 tr_hdr->Flags = cpu_to_le16(0x01);
2066 get_random_bytes(&tr_hdr->Nonce, SMB3_AES128CMM_NONCE);
2067 memcpy(&tr_hdr->SessionId, &shdr->SessionId, 8);
2068 inc_rfc1001_len(tr_hdr, sizeof(struct smb2_transform_hdr) - server->vals->header_preamble_size);
2069 inc_rfc1001_len(tr_hdr, orig_len);
2072 /* We can not use the normal sg_set_buf() as we will sometimes pass a
2073 * stack object as buf.
2075 static inline void smb2_sg_set_buf(struct scatterlist *sg, const void *buf,
2076 unsigned int buflen)
2078 sg_set_page(sg, virt_to_page(buf), buflen, offset_in_page(buf));
2081 static struct scatterlist *
2082 init_sg(struct smb_rqst *rqst, u8 *sign)
2084 unsigned int sg_len = rqst->rq_nvec + rqst->rq_npages + 1;
2085 unsigned int assoc_data_len = sizeof(struct smb2_transform_hdr) - 24;
2086 struct scatterlist *sg;
2090 sg = kmalloc_array(sg_len, sizeof(struct scatterlist), GFP_KERNEL);
2094 sg_init_table(sg, sg_len);
2095 smb2_sg_set_buf(&sg[0], rqst->rq_iov[0].iov_base + 24, assoc_data_len);
2096 for (i = 1; i < rqst->rq_nvec; i++)
2097 smb2_sg_set_buf(&sg[i], rqst->rq_iov[i].iov_base,
2098 rqst->rq_iov[i].iov_len);
2099 for (j = 0; i < sg_len - 1; i++, j++) {
2100 unsigned int len = (j < rqst->rq_npages - 1) ? rqst->rq_pagesz
2102 sg_set_page(&sg[i], rqst->rq_pages[j], len, 0);
2104 smb2_sg_set_buf(&sg[sg_len - 1], sign, SMB2_SIGNATURE_SIZE);
2109 smb2_get_enc_key(struct TCP_Server_Info *server, __u64 ses_id, int enc, u8 *key)
2111 struct cifs_ses *ses;
2114 spin_lock(&cifs_tcp_ses_lock);
2115 list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) {
2116 if (ses->Suid != ses_id)
2118 ses_enc_key = enc ? ses->smb3encryptionkey :
2119 ses->smb3decryptionkey;
2120 memcpy(key, ses_enc_key, SMB3_SIGN_KEY_SIZE);
2121 spin_unlock(&cifs_tcp_ses_lock);
2124 spin_unlock(&cifs_tcp_ses_lock);
2129 * Encrypt or decrypt @rqst message. @rqst has the following format:
2130 * iov[0] - transform header (associate data),
2131 * iov[1-N] and pages - data to encrypt.
2132 * On success return encrypted data in iov[1-N] and pages, leave iov[0]
2136 crypt_message(struct TCP_Server_Info *server, struct smb_rqst *rqst, int enc)
2138 struct smb2_transform_hdr *tr_hdr =
2139 (struct smb2_transform_hdr *)rqst->rq_iov[0].iov_base;
2140 unsigned int assoc_data_len = sizeof(struct smb2_transform_hdr) - 20 - server->vals->header_preamble_size;
2142 struct scatterlist *sg;
2143 u8 sign[SMB2_SIGNATURE_SIZE] = {};
2144 u8 key[SMB3_SIGN_KEY_SIZE];
2145 struct aead_request *req;
2147 unsigned int iv_len;
2148 DECLARE_CRYPTO_WAIT(wait);
2149 struct crypto_aead *tfm;
2150 unsigned int crypt_len = le32_to_cpu(tr_hdr->OriginalMessageSize);
2152 rc = smb2_get_enc_key(server, tr_hdr->SessionId, enc, key);
2154 cifs_dbg(VFS, "%s: Could not get %scryption key\n", __func__,
2159 rc = smb3_crypto_aead_allocate(server);
2161 cifs_dbg(VFS, "%s: crypto alloc failed\n", __func__);
2165 tfm = enc ? server->secmech.ccmaesencrypt :
2166 server->secmech.ccmaesdecrypt;
2167 rc = crypto_aead_setkey(tfm, key, SMB3_SIGN_KEY_SIZE);
2169 cifs_dbg(VFS, "%s: Failed to set aead key %d\n", __func__, rc);
2173 rc = crypto_aead_setauthsize(tfm, SMB2_SIGNATURE_SIZE);
2175 cifs_dbg(VFS, "%s: Failed to set authsize %d\n", __func__, rc);
2179 req = aead_request_alloc(tfm, GFP_KERNEL);
2181 cifs_dbg(VFS, "%s: Failed to alloc aead request", __func__);
2186 memcpy(sign, &tr_hdr->Signature, SMB2_SIGNATURE_SIZE);
2187 crypt_len += SMB2_SIGNATURE_SIZE;
2190 sg = init_sg(rqst, sign);
2192 cifs_dbg(VFS, "%s: Failed to init sg", __func__);
2197 iv_len = crypto_aead_ivsize(tfm);
2198 iv = kzalloc(iv_len, GFP_KERNEL);
2200 cifs_dbg(VFS, "%s: Failed to alloc IV", __func__);
2205 memcpy(iv + 1, (char *)tr_hdr->Nonce, SMB3_AES128CMM_NONCE);
2207 aead_request_set_crypt(req, sg, sg, crypt_len, iv);
2208 aead_request_set_ad(req, assoc_data_len);
2210 aead_request_set_callback(req, CRYPTO_TFM_REQ_MAY_BACKLOG,
2211 crypto_req_done, &wait);
2213 rc = crypto_wait_req(enc ? crypto_aead_encrypt(req)
2214 : crypto_aead_decrypt(req), &wait);
2217 memcpy(&tr_hdr->Signature, sign, SMB2_SIGNATURE_SIZE);
2228 smb3_init_transform_rq(struct TCP_Server_Info *server, struct smb_rqst *new_rq,
2229 struct smb_rqst *old_rq)
2232 struct page **pages;
2233 struct smb2_transform_hdr *tr_hdr;
2234 unsigned int npages = old_rq->rq_npages;
2238 pages = kmalloc_array(npages, sizeof(struct page *), GFP_KERNEL);
2242 new_rq->rq_pages = pages;
2243 new_rq->rq_npages = old_rq->rq_npages;
2244 new_rq->rq_pagesz = old_rq->rq_pagesz;
2245 new_rq->rq_tailsz = old_rq->rq_tailsz;
2247 for (i = 0; i < npages; i++) {
2248 pages[i] = alloc_page(GFP_KERNEL|__GFP_HIGHMEM);
2250 goto err_free_pages;
2253 iov = kmalloc_array(old_rq->rq_nvec, sizeof(struct kvec), GFP_KERNEL);
2255 goto err_free_pages;
2257 /* copy all iovs from the old except the 1st one (rfc1002 length) */
2258 memcpy(&iov[1], &old_rq->rq_iov[1],
2259 sizeof(struct kvec) * (old_rq->rq_nvec - 1));
2260 new_rq->rq_iov = iov;
2261 new_rq->rq_nvec = old_rq->rq_nvec;
2263 tr_hdr = kmalloc(sizeof(struct smb2_transform_hdr), GFP_KERNEL);
2267 /* fill the 1st iov with a transform header */
2268 fill_transform_hdr(server, tr_hdr, old_rq);
2269 new_rq->rq_iov[0].iov_base = tr_hdr;
2270 new_rq->rq_iov[0].iov_len = sizeof(struct smb2_transform_hdr);
2272 /* copy pages form the old */
2273 for (i = 0; i < npages; i++) {
2274 char *dst = kmap(new_rq->rq_pages[i]);
2275 char *src = kmap(old_rq->rq_pages[i]);
2276 unsigned int len = (i < npages - 1) ? new_rq->rq_pagesz :
2278 memcpy(dst, src, len);
2279 kunmap(new_rq->rq_pages[i]);
2280 kunmap(old_rq->rq_pages[i]);
2283 rc = crypt_message(server, new_rq, 1);
2284 cifs_dbg(FYI, "encrypt message returned %d", rc);
2286 goto err_free_tr_hdr;
2295 for (i = i - 1; i >= 0; i--)
2302 smb3_free_transform_rq(struct smb_rqst *rqst)
2304 int i = rqst->rq_npages - 1;
2307 put_page(rqst->rq_pages[i]);
2308 kfree(rqst->rq_pages);
2309 /* free transform header */
2310 kfree(rqst->rq_iov[0].iov_base);
2311 kfree(rqst->rq_iov);
2315 smb3_is_transform_hdr(void *buf)
2317 struct smb2_transform_hdr *trhdr = buf;
2319 return trhdr->ProtocolId == SMB2_TRANSFORM_PROTO_NUM;
2323 decrypt_raw_data(struct TCP_Server_Info *server, char *buf,
2324 unsigned int buf_data_size, struct page **pages,
2325 unsigned int npages, unsigned int page_data_size)
2328 struct smb_rqst rqst = {NULL};
2329 struct smb2_hdr *hdr;
2332 iov[0].iov_base = buf;
2333 iov[0].iov_len = sizeof(struct smb2_transform_hdr);
2334 iov[1].iov_base = buf + sizeof(struct smb2_transform_hdr);
2335 iov[1].iov_len = buf_data_size;
2339 rqst.rq_pages = pages;
2340 rqst.rq_npages = npages;
2341 rqst.rq_pagesz = PAGE_SIZE;
2342 rqst.rq_tailsz = (page_data_size % PAGE_SIZE) ? : PAGE_SIZE;
2344 rc = crypt_message(server, &rqst, 0);
2345 cifs_dbg(FYI, "decrypt message returned %d\n", rc);
2350 memmove(buf + server->vals->header_preamble_size, iov[1].iov_base, buf_data_size);
2351 hdr = (struct smb2_hdr *)buf;
2352 hdr->smb2_buf_length = cpu_to_be32(buf_data_size + page_data_size);
2353 server->total_read = buf_data_size + page_data_size + server->vals->header_preamble_size;
2359 read_data_into_pages(struct TCP_Server_Info *server, struct page **pages,
2360 unsigned int npages, unsigned int len)
2365 for (i = 0; i < npages; i++) {
2366 struct page *page = pages[i];
2370 if (len >= PAGE_SIZE) {
2371 /* enough data to fill the page */
2375 zero_user(page, len, PAGE_SIZE - len);
2378 length = cifs_read_page_from_socket(server, page, n);
2381 server->total_read += length;
2388 init_read_bvec(struct page **pages, unsigned int npages, unsigned int data_size,
2389 unsigned int cur_off, struct bio_vec **page_vec)
2391 struct bio_vec *bvec;
2394 bvec = kcalloc(npages, sizeof(struct bio_vec), GFP_KERNEL);
2398 for (i = 0; i < npages; i++) {
2399 bvec[i].bv_page = pages[i];
2400 bvec[i].bv_offset = (i == 0) ? cur_off : 0;
2401 bvec[i].bv_len = min_t(unsigned int, PAGE_SIZE, data_size);
2402 data_size -= bvec[i].bv_len;
2405 if (data_size != 0) {
2406 cifs_dbg(VFS, "%s: something went wrong\n", __func__);
2416 handle_read_data(struct TCP_Server_Info *server, struct mid_q_entry *mid,
2417 char *buf, unsigned int buf_len, struct page **pages,
2418 unsigned int npages, unsigned int page_data_size)
2420 unsigned int data_offset;
2421 unsigned int data_len;
2422 unsigned int cur_off;
2423 unsigned int cur_page_idx;
2424 unsigned int pad_len;
2425 struct cifs_readdata *rdata = mid->callback_data;
2426 struct smb2_sync_hdr *shdr = get_sync_hdr(buf);
2427 struct bio_vec *bvec = NULL;
2428 struct iov_iter iter;
2431 bool use_rdma_mr = false;
2433 if (shdr->Command != SMB2_READ) {
2434 cifs_dbg(VFS, "only big read responses are supported\n");
2438 if (server->ops->is_session_expired &&
2439 server->ops->is_session_expired(buf)) {
2440 cifs_reconnect(server);
2441 wake_up(&server->response_q);
2445 if (server->ops->is_status_pending &&
2446 server->ops->is_status_pending(buf, server, 0))
2449 rdata->result = server->ops->map_error(buf, false);
2450 if (rdata->result != 0) {
2451 cifs_dbg(FYI, "%s: server returned error %d\n",
2452 __func__, rdata->result);
2453 dequeue_mid(mid, rdata->result);
2457 data_offset = server->ops->read_data_offset(buf) + server->vals->header_preamble_size;
2458 #ifdef CONFIG_CIFS_SMB_DIRECT
2459 use_rdma_mr = rdata->mr;
2461 data_len = server->ops->read_data_length(buf, use_rdma_mr);
2463 if (data_offset < server->vals->read_rsp_size) {
2465 * win2k8 sometimes sends an offset of 0 when the read
2466 * is beyond the EOF. Treat it as if the data starts just after
2469 cifs_dbg(FYI, "%s: data offset (%u) inside read response header\n",
2470 __func__, data_offset);
2471 data_offset = server->vals->read_rsp_size;
2472 } else if (data_offset > MAX_CIFS_SMALL_BUFFER_SIZE) {
2473 /* data_offset is beyond the end of smallbuf */
2474 cifs_dbg(FYI, "%s: data offset (%u) beyond end of smallbuf\n",
2475 __func__, data_offset);
2476 rdata->result = -EIO;
2477 dequeue_mid(mid, rdata->result);
2481 pad_len = data_offset - server->vals->read_rsp_size;
2483 if (buf_len <= data_offset) {
2484 /* read response payload is in pages */
2485 cur_page_idx = pad_len / PAGE_SIZE;
2486 cur_off = pad_len % PAGE_SIZE;
2488 if (cur_page_idx != 0) {
2489 /* data offset is beyond the 1st page of response */
2490 cifs_dbg(FYI, "%s: data offset (%u) beyond 1st page of response\n",
2491 __func__, data_offset);
2492 rdata->result = -EIO;
2493 dequeue_mid(mid, rdata->result);
2497 if (data_len > page_data_size - pad_len) {
2498 /* data_len is corrupt -- discard frame */
2499 rdata->result = -EIO;
2500 dequeue_mid(mid, rdata->result);
2504 rdata->result = init_read_bvec(pages, npages, page_data_size,
2506 if (rdata->result != 0) {
2507 dequeue_mid(mid, rdata->result);
2511 iov_iter_bvec(&iter, WRITE | ITER_BVEC, bvec, npages, data_len);
2512 } else if (buf_len >= data_offset + data_len) {
2513 /* read response payload is in buf */
2514 WARN_ONCE(npages > 0, "read data can be either in buf or in pages");
2515 iov.iov_base = buf + data_offset;
2516 iov.iov_len = data_len;
2517 iov_iter_kvec(&iter, WRITE | ITER_KVEC, &iov, 1, data_len);
2519 /* read response payload cannot be in both buf and pages */
2520 WARN_ONCE(1, "buf can not contain only a part of read data");
2521 rdata->result = -EIO;
2522 dequeue_mid(mid, rdata->result);
2526 /* set up first iov for signature check */
2527 rdata->iov[0].iov_base = buf;
2528 rdata->iov[0].iov_len = 4;
2529 rdata->iov[1].iov_base = buf + 4;
2530 rdata->iov[1].iov_len = server->vals->read_rsp_size - 4;
2531 cifs_dbg(FYI, "0: iov_base=%p iov_len=%zu\n",
2532 rdata->iov[0].iov_base, server->vals->read_rsp_size);
2534 length = rdata->copy_into_pages(server, rdata, &iter);
2541 dequeue_mid(mid, false);
2546 receive_encrypted_read(struct TCP_Server_Info *server, struct mid_q_entry **mid)
2548 char *buf = server->smallbuf;
2549 struct smb2_transform_hdr *tr_hdr = (struct smb2_transform_hdr *)buf;
2550 unsigned int npages;
2551 struct page **pages;
2553 unsigned int buflen = get_rfc1002_length(buf) + server->vals->header_preamble_size;
2557 len = min_t(unsigned int, buflen, server->vals->read_rsp_size -
2558 server->vals->header_preamble_size +
2559 sizeof(struct smb2_transform_hdr)) - HEADER_SIZE(server) + 1;
2561 rc = cifs_read_from_socket(server, buf + HEADER_SIZE(server) - 1, len);
2564 server->total_read += rc;
2566 len = le32_to_cpu(tr_hdr->OriginalMessageSize) +
2567 server->vals->header_preamble_size -
2568 server->vals->read_rsp_size;
2569 npages = DIV_ROUND_UP(len, PAGE_SIZE);
2571 pages = kmalloc_array(npages, sizeof(struct page *), GFP_KERNEL);
2577 for (; i < npages; i++) {
2578 pages[i] = alloc_page(GFP_KERNEL|__GFP_HIGHMEM);
2585 /* read read data into pages */
2586 rc = read_data_into_pages(server, pages, npages, len);
2590 rc = cifs_discard_remaining_data(server);
2594 rc = decrypt_raw_data(server, buf, server->vals->read_rsp_size -
2595 server->vals->header_preamble_size,
2596 pages, npages, len);
2600 *mid = smb2_find_mid(server, buf);
2602 cifs_dbg(FYI, "mid not found\n");
2604 cifs_dbg(FYI, "mid found\n");
2605 (*mid)->decrypted = true;
2606 rc = handle_read_data(server, *mid, buf,
2607 server->vals->read_rsp_size,
2608 pages, npages, len);
2612 for (i = i - 1; i >= 0; i--)
2617 cifs_discard_remaining_data(server);
2622 receive_encrypted_standard(struct TCP_Server_Info *server,
2623 struct mid_q_entry **mid)
2626 char *buf = server->smallbuf;
2627 unsigned int pdu_length = get_rfc1002_length(buf);
2628 unsigned int buf_size;
2629 struct mid_q_entry *mid_entry;
2631 /* switch to large buffer if too big for a small one */
2632 if (pdu_length + server->vals->header_preamble_size > MAX_CIFS_SMALL_BUFFER_SIZE) {
2633 server->large_buf = true;
2634 memcpy(server->bigbuf, buf, server->total_read);
2635 buf = server->bigbuf;
2638 /* now read the rest */
2639 length = cifs_read_from_socket(server, buf + HEADER_SIZE(server) - 1,
2640 pdu_length - HEADER_SIZE(server) + 1 +
2641 server->vals->header_preamble_size);
2644 server->total_read += length;
2646 buf_size = pdu_length + server->vals->header_preamble_size - sizeof(struct smb2_transform_hdr);
2647 length = decrypt_raw_data(server, buf, buf_size, NULL, 0, 0);
2651 mid_entry = smb2_find_mid(server, buf);
2652 if (mid_entry == NULL)
2653 cifs_dbg(FYI, "mid not found\n");
2655 cifs_dbg(FYI, "mid found\n");
2656 mid_entry->decrypted = true;
2661 if (mid_entry && mid_entry->handle)
2662 return mid_entry->handle(server, mid_entry);
2664 return cifs_handle_standard(server, mid_entry);
2668 smb3_receive_transform(struct TCP_Server_Info *server, struct mid_q_entry **mid)
2670 char *buf = server->smallbuf;
2671 unsigned int pdu_length = get_rfc1002_length(buf);
2672 struct smb2_transform_hdr *tr_hdr = (struct smb2_transform_hdr *)buf;
2673 unsigned int orig_len = le32_to_cpu(tr_hdr->OriginalMessageSize);
2675 if (pdu_length + server->vals->header_preamble_size < sizeof(struct smb2_transform_hdr) +
2676 sizeof(struct smb2_sync_hdr)) {
2677 cifs_dbg(VFS, "Transform message is too small (%u)\n",
2679 cifs_reconnect(server);
2680 wake_up(&server->response_q);
2681 return -ECONNABORTED;
2684 if (pdu_length + server->vals->header_preamble_size < orig_len + sizeof(struct smb2_transform_hdr)) {
2685 cifs_dbg(VFS, "Transform message is broken\n");
2686 cifs_reconnect(server);
2687 wake_up(&server->response_q);
2688 return -ECONNABORTED;
2691 if (pdu_length + server->vals->header_preamble_size > CIFSMaxBufSize + MAX_HEADER_SIZE(server))
2692 return receive_encrypted_read(server, mid);
2694 return receive_encrypted_standard(server, mid);
2698 smb3_handle_read_data(struct TCP_Server_Info *server, struct mid_q_entry *mid)
2700 char *buf = server->large_buf ? server->bigbuf : server->smallbuf;
2702 return handle_read_data(server, mid, buf, get_rfc1002_length(buf) +
2703 server->vals->header_preamble_size,
2707 struct smb_version_operations smb20_operations = {
2708 .compare_fids = smb2_compare_fids,
2709 .setup_request = smb2_setup_request,
2710 .setup_async_request = smb2_setup_async_request,
2711 .check_receive = smb2_check_receive,
2712 .add_credits = smb2_add_credits,
2713 .set_credits = smb2_set_credits,
2714 .get_credits_field = smb2_get_credits_field,
2715 .get_credits = smb2_get_credits,
2716 .wait_mtu_credits = cifs_wait_mtu_credits,
2717 .get_next_mid = smb2_get_next_mid,
2718 .read_data_offset = smb2_read_data_offset,
2719 .read_data_length = smb2_read_data_length,
2720 .map_error = map_smb2_to_linux_error,
2721 .find_mid = smb2_find_mid,
2722 .check_message = smb2_check_message,
2723 .dump_detail = smb2_dump_detail,
2724 .clear_stats = smb2_clear_stats,
2725 .print_stats = smb2_print_stats,
2726 .is_oplock_break = smb2_is_valid_oplock_break,
2727 .handle_cancelled_mid = smb2_handle_cancelled_mid,
2728 .downgrade_oplock = smb2_downgrade_oplock,
2729 .need_neg = smb2_need_neg,
2730 .negotiate = smb2_negotiate,
2731 .negotiate_wsize = smb2_negotiate_wsize,
2732 .negotiate_rsize = smb2_negotiate_rsize,
2733 .sess_setup = SMB2_sess_setup,
2734 .logoff = SMB2_logoff,
2735 .tree_connect = SMB2_tcon,
2736 .tree_disconnect = SMB2_tdis,
2737 .qfs_tcon = smb2_qfs_tcon,
2738 .is_path_accessible = smb2_is_path_accessible,
2739 .can_echo = smb2_can_echo,
2741 .query_path_info = smb2_query_path_info,
2742 .get_srv_inum = smb2_get_srv_inum,
2743 .query_file_info = smb2_query_file_info,
2744 .set_path_size = smb2_set_path_size,
2745 .set_file_size = smb2_set_file_size,
2746 .set_file_info = smb2_set_file_info,
2747 .set_compression = smb2_set_compression,
2748 .mkdir = smb2_mkdir,
2749 .mkdir_setinfo = smb2_mkdir_setinfo,
2750 .rmdir = smb2_rmdir,
2751 .unlink = smb2_unlink,
2752 .rename = smb2_rename_path,
2753 .create_hardlink = smb2_create_hardlink,
2754 .query_symlink = smb2_query_symlink,
2755 .query_mf_symlink = smb3_query_mf_symlink,
2756 .create_mf_symlink = smb3_create_mf_symlink,
2757 .open = smb2_open_file,
2758 .set_fid = smb2_set_fid,
2759 .close = smb2_close_file,
2760 .flush = smb2_flush_file,
2761 .async_readv = smb2_async_readv,
2762 .async_writev = smb2_async_writev,
2763 .sync_read = smb2_sync_read,
2764 .sync_write = smb2_sync_write,
2765 .query_dir_first = smb2_query_dir_first,
2766 .query_dir_next = smb2_query_dir_next,
2767 .close_dir = smb2_close_dir,
2768 .calc_smb_size = smb2_calc_size,
2769 .is_status_pending = smb2_is_status_pending,
2770 .is_session_expired = smb2_is_session_expired,
2771 .oplock_response = smb2_oplock_response,
2772 .queryfs = smb2_queryfs,
2773 .mand_lock = smb2_mand_lock,
2774 .mand_unlock_range = smb2_unlock_range,
2775 .push_mand_locks = smb2_push_mandatory_locks,
2776 .get_lease_key = smb2_get_lease_key,
2777 .set_lease_key = smb2_set_lease_key,
2778 .new_lease_key = smb2_new_lease_key,
2779 .calc_signature = smb2_calc_signature,
2780 .is_read_op = smb2_is_read_op,
2781 .set_oplock_level = smb2_set_oplock_level,
2782 .create_lease_buf = smb2_create_lease_buf,
2783 .parse_lease_buf = smb2_parse_lease_buf,
2784 .copychunk_range = smb2_copychunk_range,
2785 .wp_retry_size = smb2_wp_retry_size,
2786 .dir_needs_close = smb2_dir_needs_close,
2787 .get_dfs_refer = smb2_get_dfs_refer,
2788 .select_sectype = smb2_select_sectype,
2789 #ifdef CONFIG_CIFS_XATTR
2790 .query_all_EAs = smb2_query_eas,
2791 .set_EA = smb2_set_ea,
2792 #endif /* CIFS_XATTR */
2793 #ifdef CONFIG_CIFS_ACL
2794 .get_acl = get_smb2_acl,
2795 .get_acl_by_fid = get_smb2_acl_by_fid,
2796 .set_acl = set_smb2_acl,
2797 #endif /* CIFS_ACL */
2800 struct smb_version_operations smb21_operations = {
2801 .compare_fids = smb2_compare_fids,
2802 .setup_request = smb2_setup_request,
2803 .setup_async_request = smb2_setup_async_request,
2804 .check_receive = smb2_check_receive,
2805 .add_credits = smb2_add_credits,
2806 .set_credits = smb2_set_credits,
2807 .get_credits_field = smb2_get_credits_field,
2808 .get_credits = smb2_get_credits,
2809 .wait_mtu_credits = smb2_wait_mtu_credits,
2810 .get_next_mid = smb2_get_next_mid,
2811 .read_data_offset = smb2_read_data_offset,
2812 .read_data_length = smb2_read_data_length,
2813 .map_error = map_smb2_to_linux_error,
2814 .find_mid = smb2_find_mid,
2815 .check_message = smb2_check_message,
2816 .dump_detail = smb2_dump_detail,
2817 .clear_stats = smb2_clear_stats,
2818 .print_stats = smb2_print_stats,
2819 .is_oplock_break = smb2_is_valid_oplock_break,
2820 .handle_cancelled_mid = smb2_handle_cancelled_mid,
2821 .downgrade_oplock = smb2_downgrade_oplock,
2822 .need_neg = smb2_need_neg,
2823 .negotiate = smb2_negotiate,
2824 .negotiate_wsize = smb2_negotiate_wsize,
2825 .negotiate_rsize = smb2_negotiate_rsize,
2826 .sess_setup = SMB2_sess_setup,
2827 .logoff = SMB2_logoff,
2828 .tree_connect = SMB2_tcon,
2829 .tree_disconnect = SMB2_tdis,
2830 .qfs_tcon = smb2_qfs_tcon,
2831 .is_path_accessible = smb2_is_path_accessible,
2832 .can_echo = smb2_can_echo,
2834 .query_path_info = smb2_query_path_info,
2835 .get_srv_inum = smb2_get_srv_inum,
2836 .query_file_info = smb2_query_file_info,
2837 .set_path_size = smb2_set_path_size,
2838 .set_file_size = smb2_set_file_size,
2839 .set_file_info = smb2_set_file_info,
2840 .set_compression = smb2_set_compression,
2841 .mkdir = smb2_mkdir,
2842 .mkdir_setinfo = smb2_mkdir_setinfo,
2843 .rmdir = smb2_rmdir,
2844 .unlink = smb2_unlink,
2845 .rename = smb2_rename_path,
2846 .create_hardlink = smb2_create_hardlink,
2847 .query_symlink = smb2_query_symlink,
2848 .query_mf_symlink = smb3_query_mf_symlink,
2849 .create_mf_symlink = smb3_create_mf_symlink,
2850 .open = smb2_open_file,
2851 .set_fid = smb2_set_fid,
2852 .close = smb2_close_file,
2853 .flush = smb2_flush_file,
2854 .async_readv = smb2_async_readv,
2855 .async_writev = smb2_async_writev,
2856 .sync_read = smb2_sync_read,
2857 .sync_write = smb2_sync_write,
2858 .query_dir_first = smb2_query_dir_first,
2859 .query_dir_next = smb2_query_dir_next,
2860 .close_dir = smb2_close_dir,
2861 .calc_smb_size = smb2_calc_size,
2862 .is_status_pending = smb2_is_status_pending,
2863 .is_session_expired = smb2_is_session_expired,
2864 .oplock_response = smb2_oplock_response,
2865 .queryfs = smb2_queryfs,
2866 .mand_lock = smb2_mand_lock,
2867 .mand_unlock_range = smb2_unlock_range,
2868 .push_mand_locks = smb2_push_mandatory_locks,
2869 .get_lease_key = smb2_get_lease_key,
2870 .set_lease_key = smb2_set_lease_key,
2871 .new_lease_key = smb2_new_lease_key,
2872 .calc_signature = smb2_calc_signature,
2873 .is_read_op = smb21_is_read_op,
2874 .set_oplock_level = smb21_set_oplock_level,
2875 .create_lease_buf = smb2_create_lease_buf,
2876 .parse_lease_buf = smb2_parse_lease_buf,
2877 .copychunk_range = smb2_copychunk_range,
2878 .wp_retry_size = smb2_wp_retry_size,
2879 .dir_needs_close = smb2_dir_needs_close,
2880 .enum_snapshots = smb3_enum_snapshots,
2881 .get_dfs_refer = smb2_get_dfs_refer,
2882 .select_sectype = smb2_select_sectype,
2883 #ifdef CONFIG_CIFS_XATTR
2884 .query_all_EAs = smb2_query_eas,
2885 .set_EA = smb2_set_ea,
2886 #endif /* CIFS_XATTR */
2887 #ifdef CONFIG_CIFS_ACL
2888 .get_acl = get_smb2_acl,
2889 .get_acl_by_fid = get_smb2_acl_by_fid,
2890 .set_acl = set_smb2_acl,
2891 #endif /* CIFS_ACL */
2894 struct smb_version_operations smb30_operations = {
2895 .compare_fids = smb2_compare_fids,
2896 .setup_request = smb2_setup_request,
2897 .setup_async_request = smb2_setup_async_request,
2898 .check_receive = smb2_check_receive,
2899 .add_credits = smb2_add_credits,
2900 .set_credits = smb2_set_credits,
2901 .get_credits_field = smb2_get_credits_field,
2902 .get_credits = smb2_get_credits,
2903 .wait_mtu_credits = smb2_wait_mtu_credits,
2904 .get_next_mid = smb2_get_next_mid,
2905 .read_data_offset = smb2_read_data_offset,
2906 .read_data_length = smb2_read_data_length,
2907 .map_error = map_smb2_to_linux_error,
2908 .find_mid = smb2_find_mid,
2909 .check_message = smb2_check_message,
2910 .dump_detail = smb2_dump_detail,
2911 .clear_stats = smb2_clear_stats,
2912 .print_stats = smb2_print_stats,
2913 .dump_share_caps = smb2_dump_share_caps,
2914 .is_oplock_break = smb2_is_valid_oplock_break,
2915 .handle_cancelled_mid = smb2_handle_cancelled_mid,
2916 .downgrade_oplock = smb2_downgrade_oplock,
2917 .need_neg = smb2_need_neg,
2918 .negotiate = smb2_negotiate,
2919 .negotiate_wsize = smb2_negotiate_wsize,
2920 .negotiate_rsize = smb2_negotiate_rsize,
2921 .sess_setup = SMB2_sess_setup,
2922 .logoff = SMB2_logoff,
2923 .tree_connect = SMB2_tcon,
2924 .tree_disconnect = SMB2_tdis,
2925 .qfs_tcon = smb3_qfs_tcon,
2926 .is_path_accessible = smb2_is_path_accessible,
2927 .can_echo = smb2_can_echo,
2929 .query_path_info = smb2_query_path_info,
2930 .get_srv_inum = smb2_get_srv_inum,
2931 .query_file_info = smb2_query_file_info,
2932 .set_path_size = smb2_set_path_size,
2933 .set_file_size = smb2_set_file_size,
2934 .set_file_info = smb2_set_file_info,
2935 .set_compression = smb2_set_compression,
2936 .mkdir = smb2_mkdir,
2937 .mkdir_setinfo = smb2_mkdir_setinfo,
2938 .rmdir = smb2_rmdir,
2939 .unlink = smb2_unlink,
2940 .rename = smb2_rename_path,
2941 .create_hardlink = smb2_create_hardlink,
2942 .query_symlink = smb2_query_symlink,
2943 .query_mf_symlink = smb3_query_mf_symlink,
2944 .create_mf_symlink = smb3_create_mf_symlink,
2945 .open = smb2_open_file,
2946 .set_fid = smb2_set_fid,
2947 .close = smb2_close_file,
2948 .flush = smb2_flush_file,
2949 .async_readv = smb2_async_readv,
2950 .async_writev = smb2_async_writev,
2951 .sync_read = smb2_sync_read,
2952 .sync_write = smb2_sync_write,
2953 .query_dir_first = smb2_query_dir_first,
2954 .query_dir_next = smb2_query_dir_next,
2955 .close_dir = smb2_close_dir,
2956 .calc_smb_size = smb2_calc_size,
2957 .is_status_pending = smb2_is_status_pending,
2958 .is_session_expired = smb2_is_session_expired,
2959 .oplock_response = smb2_oplock_response,
2960 .queryfs = smb2_queryfs,
2961 .mand_lock = smb2_mand_lock,
2962 .mand_unlock_range = smb2_unlock_range,
2963 .push_mand_locks = smb2_push_mandatory_locks,
2964 .get_lease_key = smb2_get_lease_key,
2965 .set_lease_key = smb2_set_lease_key,
2966 .new_lease_key = smb2_new_lease_key,
2967 .generate_signingkey = generate_smb30signingkey,
2968 .calc_signature = smb3_calc_signature,
2969 .set_integrity = smb3_set_integrity,
2970 .is_read_op = smb21_is_read_op,
2971 .set_oplock_level = smb3_set_oplock_level,
2972 .create_lease_buf = smb3_create_lease_buf,
2973 .parse_lease_buf = smb3_parse_lease_buf,
2974 .copychunk_range = smb2_copychunk_range,
2975 .duplicate_extents = smb2_duplicate_extents,
2976 .validate_negotiate = smb3_validate_negotiate,
2977 .wp_retry_size = smb2_wp_retry_size,
2978 .dir_needs_close = smb2_dir_needs_close,
2979 .fallocate = smb3_fallocate,
2980 .enum_snapshots = smb3_enum_snapshots,
2981 .init_transform_rq = smb3_init_transform_rq,
2982 .free_transform_rq = smb3_free_transform_rq,
2983 .is_transform_hdr = smb3_is_transform_hdr,
2984 .receive_transform = smb3_receive_transform,
2985 .get_dfs_refer = smb2_get_dfs_refer,
2986 .select_sectype = smb2_select_sectype,
2987 #ifdef CONFIG_CIFS_XATTR
2988 .query_all_EAs = smb2_query_eas,
2989 .set_EA = smb2_set_ea,
2990 #endif /* CIFS_XATTR */
2991 #ifdef CONFIG_CIFS_ACL
2992 .get_acl = get_smb2_acl,
2993 .get_acl_by_fid = get_smb2_acl_by_fid,
2994 .set_acl = set_smb2_acl,
2995 #endif /* CIFS_ACL */
2998 #ifdef CONFIG_CIFS_SMB311
2999 struct smb_version_operations smb311_operations = {
3000 .compare_fids = smb2_compare_fids,
3001 .setup_request = smb2_setup_request,
3002 .setup_async_request = smb2_setup_async_request,
3003 .check_receive = smb2_check_receive,
3004 .add_credits = smb2_add_credits,
3005 .set_credits = smb2_set_credits,
3006 .get_credits_field = smb2_get_credits_field,
3007 .get_credits = smb2_get_credits,
3008 .wait_mtu_credits = smb2_wait_mtu_credits,
3009 .get_next_mid = smb2_get_next_mid,
3010 .read_data_offset = smb2_read_data_offset,
3011 .read_data_length = smb2_read_data_length,
3012 .map_error = map_smb2_to_linux_error,
3013 .find_mid = smb2_find_mid,
3014 .check_message = smb2_check_message,
3015 .dump_detail = smb2_dump_detail,
3016 .clear_stats = smb2_clear_stats,
3017 .print_stats = smb2_print_stats,
3018 .dump_share_caps = smb2_dump_share_caps,
3019 .is_oplock_break = smb2_is_valid_oplock_break,
3020 .handle_cancelled_mid = smb2_handle_cancelled_mid,
3021 .downgrade_oplock = smb2_downgrade_oplock,
3022 .need_neg = smb2_need_neg,
3023 .negotiate = smb2_negotiate,
3024 .negotiate_wsize = smb2_negotiate_wsize,
3025 .negotiate_rsize = smb2_negotiate_rsize,
3026 .sess_setup = SMB2_sess_setup,
3027 .logoff = SMB2_logoff,
3028 .tree_connect = SMB2_tcon,
3029 .tree_disconnect = SMB2_tdis,
3030 .qfs_tcon = smb3_qfs_tcon,
3031 .is_path_accessible = smb2_is_path_accessible,
3032 .can_echo = smb2_can_echo,
3034 .query_path_info = smb2_query_path_info,
3035 .get_srv_inum = smb2_get_srv_inum,
3036 .query_file_info = smb2_query_file_info,
3037 .set_path_size = smb2_set_path_size,
3038 .set_file_size = smb2_set_file_size,
3039 .set_file_info = smb2_set_file_info,
3040 .set_compression = smb2_set_compression,
3041 .mkdir = smb2_mkdir,
3042 .mkdir_setinfo = smb2_mkdir_setinfo,
3043 .rmdir = smb2_rmdir,
3044 .unlink = smb2_unlink,
3045 .rename = smb2_rename_path,
3046 .create_hardlink = smb2_create_hardlink,
3047 .query_symlink = smb2_query_symlink,
3048 .query_mf_symlink = smb3_query_mf_symlink,
3049 .create_mf_symlink = smb3_create_mf_symlink,
3050 .open = smb2_open_file,
3051 .set_fid = smb2_set_fid,
3052 .close = smb2_close_file,
3053 .flush = smb2_flush_file,
3054 .async_readv = smb2_async_readv,
3055 .async_writev = smb2_async_writev,
3056 .sync_read = smb2_sync_read,
3057 .sync_write = smb2_sync_write,
3058 .query_dir_first = smb2_query_dir_first,
3059 .query_dir_next = smb2_query_dir_next,
3060 .close_dir = smb2_close_dir,
3061 .calc_smb_size = smb2_calc_size,
3062 .is_status_pending = smb2_is_status_pending,
3063 .is_session_expired = smb2_is_session_expired,
3064 .oplock_response = smb2_oplock_response,
3065 .queryfs = smb2_queryfs,
3066 .mand_lock = smb2_mand_lock,
3067 .mand_unlock_range = smb2_unlock_range,
3068 .push_mand_locks = smb2_push_mandatory_locks,
3069 .get_lease_key = smb2_get_lease_key,
3070 .set_lease_key = smb2_set_lease_key,
3071 .new_lease_key = smb2_new_lease_key,
3072 .generate_signingkey = generate_smb311signingkey,
3073 .calc_signature = smb3_calc_signature,
3074 .set_integrity = smb3_set_integrity,
3075 .is_read_op = smb21_is_read_op,
3076 .set_oplock_level = smb3_set_oplock_level,
3077 .create_lease_buf = smb3_create_lease_buf,
3078 .parse_lease_buf = smb3_parse_lease_buf,
3079 .copychunk_range = smb2_copychunk_range,
3080 .duplicate_extents = smb2_duplicate_extents,
3081 /* .validate_negotiate = smb3_validate_negotiate, */ /* not used in 3.11 */
3082 .wp_retry_size = smb2_wp_retry_size,
3083 .dir_needs_close = smb2_dir_needs_close,
3084 .fallocate = smb3_fallocate,
3085 .enum_snapshots = smb3_enum_snapshots,
3086 .init_transform_rq = smb3_init_transform_rq,
3087 .free_transform_rq = smb3_free_transform_rq,
3088 .is_transform_hdr = smb3_is_transform_hdr,
3089 .receive_transform = smb3_receive_transform,
3090 .get_dfs_refer = smb2_get_dfs_refer,
3091 .select_sectype = smb2_select_sectype,
3092 #ifdef CONFIG_CIFS_XATTR
3093 .query_all_EAs = smb2_query_eas,
3094 .set_EA = smb2_set_ea,
3095 #endif /* CIFS_XATTR */
3097 #endif /* CIFS_SMB311 */
3099 struct smb_version_values smb20_values = {
3100 .version_string = SMB20_VERSION_STRING,
3101 .protocol_id = SMB20_PROT_ID,
3102 .req_capabilities = 0, /* MBZ */
3103 .large_lock_type = 0,
3104 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
3105 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
3106 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
3107 .header_size = sizeof(struct smb2_hdr),
3108 .header_preamble_size = 4,
3109 .max_header_size = MAX_SMB2_HDR_SIZE,
3110 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
3111 .lock_cmd = SMB2_LOCK,
3113 .cap_nt_find = SMB2_NT_FIND,
3114 .cap_large_files = SMB2_LARGE_FILES,
3115 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
3116 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
3117 .create_lease_size = sizeof(struct create_lease),
3120 struct smb_version_values smb21_values = {
3121 .version_string = SMB21_VERSION_STRING,
3122 .protocol_id = SMB21_PROT_ID,
3123 .req_capabilities = 0, /* MBZ on negotiate req until SMB3 dialect */
3124 .large_lock_type = 0,
3125 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
3126 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
3127 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
3128 .header_size = sizeof(struct smb2_hdr),
3129 .header_preamble_size = 4,
3130 .max_header_size = MAX_SMB2_HDR_SIZE,
3131 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
3132 .lock_cmd = SMB2_LOCK,
3134 .cap_nt_find = SMB2_NT_FIND,
3135 .cap_large_files = SMB2_LARGE_FILES,
3136 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
3137 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
3138 .create_lease_size = sizeof(struct create_lease),
3141 struct smb_version_values smb3any_values = {
3142 .version_string = SMB3ANY_VERSION_STRING,
3143 .protocol_id = SMB302_PROT_ID, /* doesn't matter, send protocol array */
3144 .req_capabilities = SMB2_GLOBAL_CAP_DFS | SMB2_GLOBAL_CAP_LEASING | SMB2_GLOBAL_CAP_LARGE_MTU | SMB2_GLOBAL_CAP_PERSISTENT_HANDLES | SMB2_GLOBAL_CAP_ENCRYPTION,
3145 .large_lock_type = 0,
3146 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
3147 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
3148 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
3149 .header_size = sizeof(struct smb2_hdr),
3150 .header_preamble_size = 4,
3151 .max_header_size = MAX_SMB2_HDR_SIZE,
3152 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
3153 .lock_cmd = SMB2_LOCK,
3155 .cap_nt_find = SMB2_NT_FIND,
3156 .cap_large_files = SMB2_LARGE_FILES,
3157 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
3158 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
3159 .create_lease_size = sizeof(struct create_lease_v2),
3162 struct smb_version_values smbdefault_values = {
3163 .version_string = SMBDEFAULT_VERSION_STRING,
3164 .protocol_id = SMB302_PROT_ID, /* doesn't matter, send protocol array */
3165 .req_capabilities = SMB2_GLOBAL_CAP_DFS | SMB2_GLOBAL_CAP_LEASING | SMB2_GLOBAL_CAP_LARGE_MTU | SMB2_GLOBAL_CAP_PERSISTENT_HANDLES | SMB2_GLOBAL_CAP_ENCRYPTION,
3166 .large_lock_type = 0,
3167 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
3168 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
3169 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
3170 .header_size = sizeof(struct smb2_hdr),
3171 .header_preamble_size = 4,
3172 .max_header_size = MAX_SMB2_HDR_SIZE,
3173 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
3174 .lock_cmd = SMB2_LOCK,
3176 .cap_nt_find = SMB2_NT_FIND,
3177 .cap_large_files = SMB2_LARGE_FILES,
3178 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
3179 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
3180 .create_lease_size = sizeof(struct create_lease_v2),
3183 struct smb_version_values smb30_values = {
3184 .version_string = SMB30_VERSION_STRING,
3185 .protocol_id = SMB30_PROT_ID,
3186 .req_capabilities = SMB2_GLOBAL_CAP_DFS | SMB2_GLOBAL_CAP_LEASING | SMB2_GLOBAL_CAP_LARGE_MTU | SMB2_GLOBAL_CAP_PERSISTENT_HANDLES | SMB2_GLOBAL_CAP_ENCRYPTION,
3187 .large_lock_type = 0,
3188 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
3189 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
3190 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
3191 .header_size = sizeof(struct smb2_hdr),
3192 .header_preamble_size = 4,
3193 .max_header_size = MAX_SMB2_HDR_SIZE,
3194 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
3195 .lock_cmd = SMB2_LOCK,
3197 .cap_nt_find = SMB2_NT_FIND,
3198 .cap_large_files = SMB2_LARGE_FILES,
3199 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
3200 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
3201 .create_lease_size = sizeof(struct create_lease_v2),
3204 struct smb_version_values smb302_values = {
3205 .version_string = SMB302_VERSION_STRING,
3206 .protocol_id = SMB302_PROT_ID,
3207 .req_capabilities = SMB2_GLOBAL_CAP_DFS | SMB2_GLOBAL_CAP_LEASING | SMB2_GLOBAL_CAP_LARGE_MTU | SMB2_GLOBAL_CAP_PERSISTENT_HANDLES | SMB2_GLOBAL_CAP_ENCRYPTION,
3208 .large_lock_type = 0,
3209 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
3210 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
3211 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
3212 .header_size = sizeof(struct smb2_hdr),
3213 .header_preamble_size = 4,
3214 .max_header_size = MAX_SMB2_HDR_SIZE,
3215 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
3216 .lock_cmd = SMB2_LOCK,
3218 .cap_nt_find = SMB2_NT_FIND,
3219 .cap_large_files = SMB2_LARGE_FILES,
3220 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
3221 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
3222 .create_lease_size = sizeof(struct create_lease_v2),
3225 #ifdef CONFIG_CIFS_SMB311
3226 struct smb_version_values smb311_values = {
3227 .version_string = SMB311_VERSION_STRING,
3228 .protocol_id = SMB311_PROT_ID,
3229 .req_capabilities = SMB2_GLOBAL_CAP_DFS | SMB2_GLOBAL_CAP_LEASING | SMB2_GLOBAL_CAP_LARGE_MTU | SMB2_GLOBAL_CAP_PERSISTENT_HANDLES | SMB2_GLOBAL_CAP_ENCRYPTION,
3230 .large_lock_type = 0,
3231 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
3232 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
3233 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
3234 .header_size = sizeof(struct smb2_hdr),
3235 .header_preamble_size = 4,
3236 .max_header_size = MAX_SMB2_HDR_SIZE,
3237 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
3238 .lock_cmd = SMB2_LOCK,
3240 .cap_nt_find = SMB2_NT_FIND,
3241 .cap_large_files = SMB2_LARGE_FILES,
3242 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
3243 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
3244 .create_lease_size = sizeof(struct create_lease_v2),