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 smb3_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon)
329 __le16 srch_path = 0; /* Null - open root of share */
330 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
331 struct cifs_open_parms oparms;
335 oparms.desired_access = FILE_READ_ATTRIBUTES;
336 oparms.disposition = FILE_OPEN;
337 oparms.create_options = 0;
339 oparms.reconnect = false;
341 rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL);
345 #ifdef CONFIG_CIFS_STATS2
346 SMB3_request_interfaces(xid, tcon);
349 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
350 FS_ATTRIBUTE_INFORMATION);
351 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
352 FS_DEVICE_INFORMATION);
353 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
354 FS_SECTOR_SIZE_INFORMATION); /* SMB3 specific */
355 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
360 smb2_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;
369 oparms.desired_access = FILE_READ_ATTRIBUTES;
370 oparms.disposition = FILE_OPEN;
371 oparms.create_options = 0;
373 oparms.reconnect = false;
375 rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL);
379 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
380 FS_ATTRIBUTE_INFORMATION);
381 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
382 FS_DEVICE_INFORMATION);
383 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
388 smb2_is_path_accessible(const unsigned int xid, struct cifs_tcon *tcon,
389 struct cifs_sb_info *cifs_sb, const char *full_path)
393 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
394 struct cifs_open_parms oparms;
397 utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb);
402 oparms.desired_access = FILE_READ_ATTRIBUTES;
403 oparms.disposition = FILE_OPEN;
404 oparms.create_options = 0;
406 oparms.reconnect = false;
408 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL);
414 rc = SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
420 smb2_get_srv_inum(const unsigned int xid, struct cifs_tcon *tcon,
421 struct cifs_sb_info *cifs_sb, const char *full_path,
422 u64 *uniqueid, FILE_ALL_INFO *data)
424 *uniqueid = le64_to_cpu(data->IndexNumber);
429 smb2_query_file_info(const unsigned int xid, struct cifs_tcon *tcon,
430 struct cifs_fid *fid, FILE_ALL_INFO *data)
433 struct smb2_file_all_info *smb2_data;
435 smb2_data = kzalloc(sizeof(struct smb2_file_all_info) + PATH_MAX * 2,
437 if (smb2_data == NULL)
440 rc = SMB2_query_info(xid, tcon, fid->persistent_fid, fid->volatile_fid,
443 move_smb2_info_to_cifs(data, smb2_data);
448 #ifdef CONFIG_CIFS_XATTR
450 move_smb2_ea_to_cifs(char *dst, size_t dst_size,
451 struct smb2_file_full_ea_info *src, size_t src_size,
452 const unsigned char *ea_name)
455 unsigned int ea_name_len = ea_name ? strlen(ea_name) : 0;
457 size_t name_len, value_len, user_name_len;
459 while (src_size > 0) {
460 name = &src->ea_data[0];
461 name_len = (size_t)src->ea_name_length;
462 value = &src->ea_data[src->ea_name_length + 1];
463 value_len = (size_t)le16_to_cpu(src->ea_value_length);
469 if (src_size < 8 + name_len + 1 + value_len) {
470 cifs_dbg(FYI, "EA entry goes beyond length of list\n");
476 if (ea_name_len == name_len &&
477 memcmp(ea_name, name, name_len) == 0) {
481 if (dst_size < value_len) {
485 memcpy(dst, value, value_len);
489 /* 'user.' plus a terminating null */
490 user_name_len = 5 + 1 + name_len;
494 if (dst_size >= user_name_len) {
495 dst_size -= user_name_len;
496 memcpy(dst, "user.", 5);
498 memcpy(dst, src->ea_data, name_len);
502 } else if (dst_size == 0) {
503 /* skip copy - calc size only */
505 /* stop before overrun buffer */
511 if (!src->next_entry_offset)
514 if (src_size < le32_to_cpu(src->next_entry_offset)) {
515 /* stop before overrun buffer */
519 src_size -= le32_to_cpu(src->next_entry_offset);
520 src = (void *)((char *)src +
521 le32_to_cpu(src->next_entry_offset));
524 /* didn't find the named attribute */
533 smb2_query_eas(const unsigned int xid, struct cifs_tcon *tcon,
534 const unsigned char *path, const unsigned char *ea_name,
535 char *ea_data, size_t buf_size,
536 struct cifs_sb_info *cifs_sb)
540 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
541 struct cifs_open_parms oparms;
543 struct smb2_file_full_ea_info *smb2_data;
544 int ea_buf_size = SMB2_MIN_EA_BUF;
546 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
551 oparms.desired_access = FILE_READ_EA;
552 oparms.disposition = FILE_OPEN;
553 oparms.create_options = 0;
555 oparms.reconnect = false;
557 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL);
560 cifs_dbg(FYI, "open failed rc=%d\n", rc);
565 smb2_data = kzalloc(ea_buf_size, GFP_KERNEL);
566 if (smb2_data == NULL) {
567 SMB2_close(xid, tcon, fid.persistent_fid,
572 rc = SMB2_query_eas(xid, tcon, fid.persistent_fid,
574 ea_buf_size, smb2_data);
582 if (ea_buf_size > SMB2_MAX_EA_BUF) {
583 cifs_dbg(VFS, "EA size is too large\n");
584 SMB2_close(xid, tcon, fid.persistent_fid,
590 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
593 rc = move_smb2_ea_to_cifs(ea_data, buf_size, smb2_data,
594 SMB2_MAX_EA_BUF, ea_name);
602 smb2_set_ea(const unsigned int xid, struct cifs_tcon *tcon,
603 const char *path, const char *ea_name, const void *ea_value,
604 const __u16 ea_value_len, const struct nls_table *nls_codepage,
605 struct cifs_sb_info *cifs_sb)
609 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
610 struct cifs_open_parms oparms;
612 struct smb2_file_full_ea_info *ea;
613 int ea_name_len = strlen(ea_name);
616 if (ea_name_len > 255)
619 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
624 oparms.desired_access = FILE_WRITE_EA;
625 oparms.disposition = FILE_OPEN;
626 oparms.create_options = 0;
628 oparms.reconnect = false;
630 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL);
633 cifs_dbg(FYI, "open failed rc=%d\n", rc);
637 len = sizeof(ea) + ea_name_len + ea_value_len + 1;
638 ea = kzalloc(len, GFP_KERNEL);
640 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
644 ea->ea_name_length = ea_name_len;
645 ea->ea_value_length = cpu_to_le16(ea_value_len);
646 memcpy(ea->ea_data, ea_name, ea_name_len + 1);
647 memcpy(ea->ea_data + ea_name_len + 1, ea_value, ea_value_len);
649 rc = SMB2_set_ea(xid, tcon, fid.persistent_fid, fid.volatile_fid, ea,
651 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
658 smb2_can_echo(struct TCP_Server_Info *server)
660 return server->echoes;
664 smb2_clear_stats(struct cifs_tcon *tcon)
666 #ifdef CONFIG_CIFS_STATS
668 for (i = 0; i < NUMBER_OF_SMB2_COMMANDS; i++) {
669 atomic_set(&tcon->stats.smb2_stats.smb2_com_sent[i], 0);
670 atomic_set(&tcon->stats.smb2_stats.smb2_com_failed[i], 0);
676 smb2_dump_share_caps(struct seq_file *m, struct cifs_tcon *tcon)
678 seq_puts(m, "\n\tShare Capabilities:");
679 if (tcon->capabilities & SMB2_SHARE_CAP_DFS)
680 seq_puts(m, " DFS,");
681 if (tcon->capabilities & SMB2_SHARE_CAP_CONTINUOUS_AVAILABILITY)
682 seq_puts(m, " CONTINUOUS AVAILABILITY,");
683 if (tcon->capabilities & SMB2_SHARE_CAP_SCALEOUT)
684 seq_puts(m, " SCALEOUT,");
685 if (tcon->capabilities & SMB2_SHARE_CAP_CLUSTER)
686 seq_puts(m, " CLUSTER,");
687 if (tcon->capabilities & SMB2_SHARE_CAP_ASYMMETRIC)
688 seq_puts(m, " ASYMMETRIC,");
689 if (tcon->capabilities == 0)
690 seq_puts(m, " None");
691 if (tcon->ss_flags & SSINFO_FLAGS_ALIGNED_DEVICE)
692 seq_puts(m, " Aligned,");
693 if (tcon->ss_flags & SSINFO_FLAGS_PARTITION_ALIGNED_ON_DEVICE)
694 seq_puts(m, " Partition Aligned,");
695 if (tcon->ss_flags & SSINFO_FLAGS_NO_SEEK_PENALTY)
696 seq_puts(m, " SSD,");
697 if (tcon->ss_flags & SSINFO_FLAGS_TRIM_ENABLED)
698 seq_puts(m, " TRIM-support,");
700 seq_printf(m, "\tShare Flags: 0x%x", tcon->share_flags);
701 if (tcon->perf_sector_size)
702 seq_printf(m, "\tOptimal sector size: 0x%x",
703 tcon->perf_sector_size);
707 smb2_print_stats(struct seq_file *m, struct cifs_tcon *tcon)
709 #ifdef CONFIG_CIFS_STATS
710 atomic_t *sent = tcon->stats.smb2_stats.smb2_com_sent;
711 atomic_t *failed = tcon->stats.smb2_stats.smb2_com_failed;
712 seq_printf(m, "\nNegotiates: %d sent %d failed",
713 atomic_read(&sent[SMB2_NEGOTIATE_HE]),
714 atomic_read(&failed[SMB2_NEGOTIATE_HE]));
715 seq_printf(m, "\nSessionSetups: %d sent %d failed",
716 atomic_read(&sent[SMB2_SESSION_SETUP_HE]),
717 atomic_read(&failed[SMB2_SESSION_SETUP_HE]));
718 seq_printf(m, "\nLogoffs: %d sent %d failed",
719 atomic_read(&sent[SMB2_LOGOFF_HE]),
720 atomic_read(&failed[SMB2_LOGOFF_HE]));
721 seq_printf(m, "\nTreeConnects: %d sent %d failed",
722 atomic_read(&sent[SMB2_TREE_CONNECT_HE]),
723 atomic_read(&failed[SMB2_TREE_CONNECT_HE]));
724 seq_printf(m, "\nTreeDisconnects: %d sent %d failed",
725 atomic_read(&sent[SMB2_TREE_DISCONNECT_HE]),
726 atomic_read(&failed[SMB2_TREE_DISCONNECT_HE]));
727 seq_printf(m, "\nCreates: %d sent %d failed",
728 atomic_read(&sent[SMB2_CREATE_HE]),
729 atomic_read(&failed[SMB2_CREATE_HE]));
730 seq_printf(m, "\nCloses: %d sent %d failed",
731 atomic_read(&sent[SMB2_CLOSE_HE]),
732 atomic_read(&failed[SMB2_CLOSE_HE]));
733 seq_printf(m, "\nFlushes: %d sent %d failed",
734 atomic_read(&sent[SMB2_FLUSH_HE]),
735 atomic_read(&failed[SMB2_FLUSH_HE]));
736 seq_printf(m, "\nReads: %d sent %d failed",
737 atomic_read(&sent[SMB2_READ_HE]),
738 atomic_read(&failed[SMB2_READ_HE]));
739 seq_printf(m, "\nWrites: %d sent %d failed",
740 atomic_read(&sent[SMB2_WRITE_HE]),
741 atomic_read(&failed[SMB2_WRITE_HE]));
742 seq_printf(m, "\nLocks: %d sent %d failed",
743 atomic_read(&sent[SMB2_LOCK_HE]),
744 atomic_read(&failed[SMB2_LOCK_HE]));
745 seq_printf(m, "\nIOCTLs: %d sent %d failed",
746 atomic_read(&sent[SMB2_IOCTL_HE]),
747 atomic_read(&failed[SMB2_IOCTL_HE]));
748 seq_printf(m, "\nCancels: %d sent %d failed",
749 atomic_read(&sent[SMB2_CANCEL_HE]),
750 atomic_read(&failed[SMB2_CANCEL_HE]));
751 seq_printf(m, "\nEchos: %d sent %d failed",
752 atomic_read(&sent[SMB2_ECHO_HE]),
753 atomic_read(&failed[SMB2_ECHO_HE]));
754 seq_printf(m, "\nQueryDirectories: %d sent %d failed",
755 atomic_read(&sent[SMB2_QUERY_DIRECTORY_HE]),
756 atomic_read(&failed[SMB2_QUERY_DIRECTORY_HE]));
757 seq_printf(m, "\nChangeNotifies: %d sent %d failed",
758 atomic_read(&sent[SMB2_CHANGE_NOTIFY_HE]),
759 atomic_read(&failed[SMB2_CHANGE_NOTIFY_HE]));
760 seq_printf(m, "\nQueryInfos: %d sent %d failed",
761 atomic_read(&sent[SMB2_QUERY_INFO_HE]),
762 atomic_read(&failed[SMB2_QUERY_INFO_HE]));
763 seq_printf(m, "\nSetInfos: %d sent %d failed",
764 atomic_read(&sent[SMB2_SET_INFO_HE]),
765 atomic_read(&failed[SMB2_SET_INFO_HE]));
766 seq_printf(m, "\nOplockBreaks: %d sent %d failed",
767 atomic_read(&sent[SMB2_OPLOCK_BREAK_HE]),
768 atomic_read(&failed[SMB2_OPLOCK_BREAK_HE]));
773 smb2_set_fid(struct cifsFileInfo *cfile, struct cifs_fid *fid, __u32 oplock)
775 struct cifsInodeInfo *cinode = CIFS_I(d_inode(cfile->dentry));
776 struct TCP_Server_Info *server = tlink_tcon(cfile->tlink)->ses->server;
778 cfile->fid.persistent_fid = fid->persistent_fid;
779 cfile->fid.volatile_fid = fid->volatile_fid;
780 server->ops->set_oplock_level(cinode, oplock, fid->epoch,
782 cinode->can_cache_brlcks = CIFS_CACHE_WRITE(cinode);
783 memcpy(cfile->fid.create_guid, fid->create_guid, 16);
787 smb2_close_file(const unsigned int xid, struct cifs_tcon *tcon,
788 struct cifs_fid *fid)
790 SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
794 SMB2_request_res_key(const unsigned int xid, struct cifs_tcon *tcon,
795 u64 persistent_fid, u64 volatile_fid,
796 struct copychunk_ioctl *pcchunk)
799 unsigned int ret_data_len;
800 struct resume_key_req *res_key;
802 rc = SMB2_ioctl(xid, tcon, persistent_fid, volatile_fid,
803 FSCTL_SRV_REQUEST_RESUME_KEY, true /* is_fsctl */,
804 NULL, 0 /* no input */,
805 (char **)&res_key, &ret_data_len);
808 cifs_dbg(VFS, "refcpy ioctl error %d getting resume key\n", rc);
809 goto req_res_key_exit;
811 if (ret_data_len < sizeof(struct resume_key_req)) {
812 cifs_dbg(VFS, "Invalid refcopy resume key length\n");
814 goto req_res_key_exit;
816 memcpy(pcchunk->SourceKey, res_key->ResumeKey, COPY_CHUNK_RES_KEY_SIZE);
824 smb2_copychunk_range(const unsigned int xid,
825 struct cifsFileInfo *srcfile,
826 struct cifsFileInfo *trgtfile, u64 src_off,
827 u64 len, u64 dest_off)
830 unsigned int ret_data_len;
831 struct copychunk_ioctl *pcchunk;
832 struct copychunk_ioctl_rsp *retbuf = NULL;
833 struct cifs_tcon *tcon;
834 int chunks_copied = 0;
835 bool chunk_sizes_updated = false;
836 ssize_t bytes_written, total_bytes_written = 0;
838 pcchunk = kmalloc(sizeof(struct copychunk_ioctl), GFP_KERNEL);
843 cifs_dbg(FYI, "in smb2_copychunk_range - about to call request res key\n");
844 /* Request a key from the server to identify the source of the copy */
845 rc = SMB2_request_res_key(xid, tlink_tcon(srcfile->tlink),
846 srcfile->fid.persistent_fid,
847 srcfile->fid.volatile_fid, pcchunk);
849 /* Note: request_res_key sets res_key null only if rc !=0 */
853 /* For now array only one chunk long, will make more flexible later */
854 pcchunk->ChunkCount = cpu_to_le32(1);
855 pcchunk->Reserved = 0;
856 pcchunk->Reserved2 = 0;
858 tcon = tlink_tcon(trgtfile->tlink);
861 pcchunk->SourceOffset = cpu_to_le64(src_off);
862 pcchunk->TargetOffset = cpu_to_le64(dest_off);
864 cpu_to_le32(min_t(u32, len, tcon->max_bytes_chunk));
866 /* Request server copy to target from src identified by key */
867 rc = SMB2_ioctl(xid, tcon, trgtfile->fid.persistent_fid,
868 trgtfile->fid.volatile_fid, FSCTL_SRV_COPYCHUNK_WRITE,
869 true /* is_fsctl */, (char *)pcchunk,
870 sizeof(struct copychunk_ioctl), (char **)&retbuf,
874 sizeof(struct copychunk_ioctl_rsp)) {
875 cifs_dbg(VFS, "invalid cchunk response size\n");
879 if (retbuf->TotalBytesWritten == 0) {
880 cifs_dbg(FYI, "no bytes copied\n");
885 * Check if server claimed to write more than we asked
887 if (le32_to_cpu(retbuf->TotalBytesWritten) >
888 le32_to_cpu(pcchunk->Length)) {
889 cifs_dbg(VFS, "invalid copy chunk response\n");
893 if (le32_to_cpu(retbuf->ChunksWritten) != 1) {
894 cifs_dbg(VFS, "invalid num chunks written\n");
900 bytes_written = le32_to_cpu(retbuf->TotalBytesWritten);
901 src_off += bytes_written;
902 dest_off += bytes_written;
903 len -= bytes_written;
904 total_bytes_written += bytes_written;
906 cifs_dbg(FYI, "Chunks %d PartialChunk %d Total %zu\n",
907 le32_to_cpu(retbuf->ChunksWritten),
908 le32_to_cpu(retbuf->ChunkBytesWritten),
910 } else if (rc == -EINVAL) {
911 if (ret_data_len != sizeof(struct copychunk_ioctl_rsp))
914 cifs_dbg(FYI, "MaxChunks %d BytesChunk %d MaxCopy %d\n",
915 le32_to_cpu(retbuf->ChunksWritten),
916 le32_to_cpu(retbuf->ChunkBytesWritten),
917 le32_to_cpu(retbuf->TotalBytesWritten));
920 * Check if this is the first request using these sizes,
921 * (ie check if copy succeed once with original sizes
922 * and check if the server gave us different sizes after
923 * we already updated max sizes on previous request).
924 * if not then why is the server returning an error now
926 if ((chunks_copied != 0) || chunk_sizes_updated)
929 /* Check that server is not asking us to grow size */
930 if (le32_to_cpu(retbuf->ChunkBytesWritten) <
931 tcon->max_bytes_chunk)
932 tcon->max_bytes_chunk =
933 le32_to_cpu(retbuf->ChunkBytesWritten);
935 goto cchunk_out; /* server gave us bogus size */
937 /* No need to change MaxChunks since already set to 1 */
938 chunk_sizes_updated = true;
949 return total_bytes_written;
953 smb2_flush_file(const unsigned int xid, struct cifs_tcon *tcon,
954 struct cifs_fid *fid)
956 return SMB2_flush(xid, tcon, fid->persistent_fid, fid->volatile_fid);
960 smb2_read_data_offset(char *buf)
962 struct smb2_read_rsp *rsp = (struct smb2_read_rsp *)buf;
963 return rsp->DataOffset;
967 smb2_read_data_length(char *buf, bool in_remaining)
969 struct smb2_read_rsp *rsp = (struct smb2_read_rsp *)buf;
972 return le32_to_cpu(rsp->DataRemaining);
974 return le32_to_cpu(rsp->DataLength);
979 smb2_sync_read(const unsigned int xid, struct cifs_fid *pfid,
980 struct cifs_io_parms *parms, unsigned int *bytes_read,
981 char **buf, int *buf_type)
983 parms->persistent_fid = pfid->persistent_fid;
984 parms->volatile_fid = pfid->volatile_fid;
985 return SMB2_read(xid, parms, bytes_read, buf, buf_type);
989 smb2_sync_write(const unsigned int xid, struct cifs_fid *pfid,
990 struct cifs_io_parms *parms, unsigned int *written,
991 struct kvec *iov, unsigned long nr_segs)
994 parms->persistent_fid = pfid->persistent_fid;
995 parms->volatile_fid = pfid->volatile_fid;
996 return SMB2_write(xid, parms, written, iov, nr_segs);
999 /* Set or clear the SPARSE_FILE attribute based on value passed in setsparse */
1000 static bool smb2_set_sparse(const unsigned int xid, struct cifs_tcon *tcon,
1001 struct cifsFileInfo *cfile, struct inode *inode, __u8 setsparse)
1003 struct cifsInodeInfo *cifsi;
1006 cifsi = CIFS_I(inode);
1008 /* if file already sparse don't bother setting sparse again */
1009 if ((cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) && setsparse)
1010 return true; /* already sparse */
1012 if (!(cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) && !setsparse)
1013 return true; /* already not sparse */
1016 * Can't check for sparse support on share the usual way via the
1017 * FS attribute info (FILE_SUPPORTS_SPARSE_FILES) on the share
1018 * since Samba server doesn't set the flag on the share, yet
1019 * supports the set sparse FSCTL and returns sparse correctly
1020 * in the file attributes. If we fail setting sparse though we
1021 * mark that server does not support sparse files for this share
1022 * to avoid repeatedly sending the unsupported fsctl to server
1023 * if the file is repeatedly extended.
1025 if (tcon->broken_sparse_sup)
1028 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
1029 cfile->fid.volatile_fid, FSCTL_SET_SPARSE,
1031 &setsparse, 1, NULL, NULL);
1033 tcon->broken_sparse_sup = true;
1034 cifs_dbg(FYI, "set sparse rc = %d\n", rc);
1039 cifsi->cifsAttrs |= FILE_ATTRIBUTE_SPARSE_FILE;
1041 cifsi->cifsAttrs &= (~FILE_ATTRIBUTE_SPARSE_FILE);
1047 smb2_set_file_size(const unsigned int xid, struct cifs_tcon *tcon,
1048 struct cifsFileInfo *cfile, __u64 size, bool set_alloc)
1050 __le64 eof = cpu_to_le64(size);
1051 struct inode *inode;
1054 * If extending file more than one page make sparse. Many Linux fs
1055 * make files sparse by default when extending via ftruncate
1057 inode = d_inode(cfile->dentry);
1059 if (!set_alloc && (size > inode->i_size + 8192)) {
1060 __u8 set_sparse = 1;
1062 /* whether set sparse succeeds or not, extend the file */
1063 smb2_set_sparse(xid, tcon, cfile, inode, set_sparse);
1066 return SMB2_set_eof(xid, tcon, cfile->fid.persistent_fid,
1067 cfile->fid.volatile_fid, cfile->pid, &eof, false);
1071 smb2_duplicate_extents(const unsigned int xid,
1072 struct cifsFileInfo *srcfile,
1073 struct cifsFileInfo *trgtfile, u64 src_off,
1074 u64 len, u64 dest_off)
1077 unsigned int ret_data_len;
1078 struct duplicate_extents_to_file dup_ext_buf;
1079 struct cifs_tcon *tcon = tlink_tcon(trgtfile->tlink);
1081 /* server fileays advertise duplicate extent support with this flag */
1082 if ((le32_to_cpu(tcon->fsAttrInfo.Attributes) &
1083 FILE_SUPPORTS_BLOCK_REFCOUNTING) == 0)
1086 dup_ext_buf.VolatileFileHandle = srcfile->fid.volatile_fid;
1087 dup_ext_buf.PersistentFileHandle = srcfile->fid.persistent_fid;
1088 dup_ext_buf.SourceFileOffset = cpu_to_le64(src_off);
1089 dup_ext_buf.TargetFileOffset = cpu_to_le64(dest_off);
1090 dup_ext_buf.ByteCount = cpu_to_le64(len);
1091 cifs_dbg(FYI, "duplicate extents: src off %lld dst off %lld len %lld",
1092 src_off, dest_off, len);
1094 rc = smb2_set_file_size(xid, tcon, trgtfile, dest_off + len, false);
1096 goto duplicate_extents_out;
1098 rc = SMB2_ioctl(xid, tcon, trgtfile->fid.persistent_fid,
1099 trgtfile->fid.volatile_fid,
1100 FSCTL_DUPLICATE_EXTENTS_TO_FILE,
1101 true /* is_fsctl */,
1102 (char *)&dup_ext_buf,
1103 sizeof(struct duplicate_extents_to_file),
1107 if (ret_data_len > 0)
1108 cifs_dbg(FYI, "non-zero response length in duplicate extents");
1110 duplicate_extents_out:
1115 smb2_set_compression(const unsigned int xid, struct cifs_tcon *tcon,
1116 struct cifsFileInfo *cfile)
1118 return SMB2_set_compression(xid, tcon, cfile->fid.persistent_fid,
1119 cfile->fid.volatile_fid);
1123 smb3_set_integrity(const unsigned int xid, struct cifs_tcon *tcon,
1124 struct cifsFileInfo *cfile)
1126 struct fsctl_set_integrity_information_req integr_info;
1127 unsigned int ret_data_len;
1129 integr_info.ChecksumAlgorithm = cpu_to_le16(CHECKSUM_TYPE_UNCHANGED);
1130 integr_info.Flags = 0;
1131 integr_info.Reserved = 0;
1133 return SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
1134 cfile->fid.volatile_fid,
1135 FSCTL_SET_INTEGRITY_INFORMATION,
1136 true /* is_fsctl */,
1137 (char *)&integr_info,
1138 sizeof(struct fsctl_set_integrity_information_req),
1145 smb3_enum_snapshots(const unsigned int xid, struct cifs_tcon *tcon,
1146 struct cifsFileInfo *cfile, void __user *ioc_buf)
1148 char *retbuf = NULL;
1149 unsigned int ret_data_len = 0;
1151 struct smb_snapshot_array snapshot_in;
1153 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
1154 cfile->fid.volatile_fid,
1155 FSCTL_SRV_ENUMERATE_SNAPSHOTS,
1156 true /* is_fsctl */,
1157 NULL, 0 /* no input data */,
1160 cifs_dbg(FYI, "enum snaphots ioctl returned %d and ret buflen is %d\n",
1165 if (ret_data_len && (ioc_buf != NULL) && (retbuf != NULL)) {
1167 if (copy_from_user(&snapshot_in, ioc_buf,
1168 sizeof(struct smb_snapshot_array))) {
1173 if (snapshot_in.snapshot_array_size < sizeof(struct smb_snapshot_array)) {
1179 if (ret_data_len > snapshot_in.snapshot_array_size)
1180 ret_data_len = snapshot_in.snapshot_array_size;
1182 if (copy_to_user(ioc_buf, retbuf, ret_data_len))
1191 smb2_query_dir_first(const unsigned int xid, struct cifs_tcon *tcon,
1192 const char *path, struct cifs_sb_info *cifs_sb,
1193 struct cifs_fid *fid, __u16 search_flags,
1194 struct cifs_search_info *srch_inf)
1198 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
1199 struct cifs_open_parms oparms;
1201 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
1206 oparms.desired_access = FILE_READ_ATTRIBUTES | FILE_READ_DATA;
1207 oparms.disposition = FILE_OPEN;
1208 oparms.create_options = 0;
1210 oparms.reconnect = false;
1212 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL);
1215 cifs_dbg(FYI, "open dir failed rc=%d\n", rc);
1219 srch_inf->entries_in_buffer = 0;
1220 srch_inf->index_of_last_entry = 0;
1222 rc = SMB2_query_directory(xid, tcon, fid->persistent_fid,
1223 fid->volatile_fid, 0, srch_inf);
1225 cifs_dbg(FYI, "query directory failed rc=%d\n", rc);
1226 SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
1232 smb2_query_dir_next(const unsigned int xid, struct cifs_tcon *tcon,
1233 struct cifs_fid *fid, __u16 search_flags,
1234 struct cifs_search_info *srch_inf)
1236 return SMB2_query_directory(xid, tcon, fid->persistent_fid,
1237 fid->volatile_fid, 0, srch_inf);
1241 smb2_close_dir(const unsigned int xid, struct cifs_tcon *tcon,
1242 struct cifs_fid *fid)
1244 return SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
1248 * If we negotiate SMB2 protocol and get STATUS_PENDING - update
1249 * the number of credits and return true. Otherwise - return false.
1252 smb2_is_status_pending(char *buf, struct TCP_Server_Info *server, int length)
1254 struct smb2_sync_hdr *shdr = get_sync_hdr(buf);
1256 if (shdr->Status != STATUS_PENDING)
1260 spin_lock(&server->req_lock);
1261 server->credits += le16_to_cpu(shdr->CreditRequest);
1262 spin_unlock(&server->req_lock);
1263 wake_up(&server->request_q);
1270 smb2_is_session_expired(char *buf)
1272 struct smb2_sync_hdr *shdr = get_sync_hdr(buf);
1274 if (shdr->Status != STATUS_NETWORK_SESSION_EXPIRED)
1277 cifs_dbg(FYI, "Session expired\n");
1282 smb2_oplock_response(struct cifs_tcon *tcon, struct cifs_fid *fid,
1283 struct cifsInodeInfo *cinode)
1285 if (tcon->ses->server->capabilities & SMB2_GLOBAL_CAP_LEASING)
1286 return SMB2_lease_break(0, tcon, cinode->lease_key,
1287 smb2_get_lease_state(cinode));
1289 return SMB2_oplock_break(0, tcon, fid->persistent_fid,
1291 CIFS_CACHE_READ(cinode) ? 1 : 0);
1295 smb2_queryfs(const unsigned int xid, struct cifs_tcon *tcon,
1296 struct kstatfs *buf)
1299 __le16 srch_path = 0; /* Null - open root of share */
1300 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
1301 struct cifs_open_parms oparms;
1302 struct cifs_fid fid;
1305 oparms.desired_access = FILE_READ_ATTRIBUTES;
1306 oparms.disposition = FILE_OPEN;
1307 oparms.create_options = 0;
1309 oparms.reconnect = false;
1311 rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL);
1314 buf->f_type = SMB2_MAGIC_NUMBER;
1315 rc = SMB2_QFS_info(xid, tcon, fid.persistent_fid, fid.volatile_fid,
1317 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
1322 smb2_compare_fids(struct cifsFileInfo *ob1, struct cifsFileInfo *ob2)
1324 return ob1->fid.persistent_fid == ob2->fid.persistent_fid &&
1325 ob1->fid.volatile_fid == ob2->fid.volatile_fid;
1329 smb2_mand_lock(const unsigned int xid, struct cifsFileInfo *cfile, __u64 offset,
1330 __u64 length, __u32 type, int lock, int unlock, bool wait)
1332 if (unlock && !lock)
1333 type = SMB2_LOCKFLAG_UNLOCK;
1334 return SMB2_lock(xid, tlink_tcon(cfile->tlink),
1335 cfile->fid.persistent_fid, cfile->fid.volatile_fid,
1336 current->tgid, length, offset, type, wait);
1340 smb2_get_lease_key(struct inode *inode, struct cifs_fid *fid)
1342 memcpy(fid->lease_key, CIFS_I(inode)->lease_key, SMB2_LEASE_KEY_SIZE);
1346 smb2_set_lease_key(struct inode *inode, struct cifs_fid *fid)
1348 memcpy(CIFS_I(inode)->lease_key, fid->lease_key, SMB2_LEASE_KEY_SIZE);
1352 smb2_new_lease_key(struct cifs_fid *fid)
1354 generate_random_uuid(fid->lease_key);
1358 smb2_get_dfs_refer(const unsigned int xid, struct cifs_ses *ses,
1359 const char *search_name,
1360 struct dfs_info3_param **target_nodes,
1361 unsigned int *num_of_nodes,
1362 const struct nls_table *nls_codepage, int remap)
1365 __le16 *utf16_path = NULL;
1366 int utf16_path_len = 0;
1367 struct cifs_tcon *tcon;
1368 struct fsctl_get_dfs_referral_req *dfs_req = NULL;
1369 struct get_dfs_referral_rsp *dfs_rsp = NULL;
1370 u32 dfs_req_size = 0, dfs_rsp_size = 0;
1372 cifs_dbg(FYI, "smb2_get_dfs_refer path <%s>\n", search_name);
1375 * Try to use the IPC tcon, otherwise just use any
1377 tcon = ses->tcon_ipc;
1379 spin_lock(&cifs_tcp_ses_lock);
1380 tcon = list_first_entry_or_null(&ses->tcon_list,
1385 spin_unlock(&cifs_tcp_ses_lock);
1389 cifs_dbg(VFS, "session %p has no tcon available for a dfs referral request\n",
1395 utf16_path = cifs_strndup_to_utf16(search_name, PATH_MAX,
1397 nls_codepage, remap);
1403 dfs_req_size = sizeof(*dfs_req) + utf16_path_len;
1404 dfs_req = kzalloc(dfs_req_size, GFP_KERNEL);
1410 /* Highest DFS referral version understood */
1411 dfs_req->MaxReferralLevel = DFS_VERSION;
1413 /* Path to resolve in an UTF-16 null-terminated string */
1414 memcpy(dfs_req->RequestFileName, utf16_path, utf16_path_len);
1417 rc = SMB2_ioctl(xid, tcon, NO_FILE_ID, NO_FILE_ID,
1418 FSCTL_DFS_GET_REFERRALS,
1419 true /* is_fsctl */,
1420 (char *)dfs_req, dfs_req_size,
1421 (char **)&dfs_rsp, &dfs_rsp_size);
1422 } while (rc == -EAGAIN);
1425 if ((rc != -ENOENT) && (rc != -EOPNOTSUPP))
1426 cifs_dbg(VFS, "ioctl error in smb2_get_dfs_refer rc=%d\n", rc);
1430 rc = parse_dfs_referrals(dfs_rsp, dfs_rsp_size,
1431 num_of_nodes, target_nodes,
1432 nls_codepage, remap, search_name,
1433 true /* is_unicode */);
1435 cifs_dbg(VFS, "parse error in smb2_get_dfs_refer rc=%d\n", rc);
1440 if (tcon && !tcon->ipc) {
1441 /* ipc tcons are not refcounted */
1442 spin_lock(&cifs_tcp_ses_lock);
1444 spin_unlock(&cifs_tcp_ses_lock);
1451 #define SMB2_SYMLINK_STRUCT_SIZE \
1452 (sizeof(struct smb2_err_rsp) - 1 + sizeof(struct smb2_symlink_err_rsp))
1455 smb2_query_symlink(const unsigned int xid, struct cifs_tcon *tcon,
1456 const char *full_path, char **target_path,
1457 struct cifs_sb_info *cifs_sb)
1461 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
1462 struct cifs_open_parms oparms;
1463 struct cifs_fid fid;
1464 struct kvec err_iov = {NULL, 0};
1465 struct smb2_err_rsp *err_buf;
1466 struct smb2_symlink_err_rsp *symlink;
1467 unsigned int sub_len;
1468 unsigned int sub_offset;
1469 unsigned int print_len;
1470 unsigned int print_offset;
1471 struct cifs_ses *ses = tcon->ses;
1472 struct TCP_Server_Info *server = ses->server;
1474 cifs_dbg(FYI, "%s: path: %s\n", __func__, full_path);
1476 utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb);
1481 oparms.desired_access = FILE_READ_ATTRIBUTES;
1482 oparms.disposition = FILE_OPEN;
1483 oparms.create_options = 0;
1485 oparms.reconnect = false;
1487 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, &err_iov);
1489 if (!rc || !err_iov.iov_base) {
1494 err_buf = err_iov.iov_base;
1495 if (le32_to_cpu(err_buf->ByteCount) < sizeof(struct smb2_symlink_err_rsp) ||
1496 err_iov.iov_len + server->vals->header_preamble_size < SMB2_SYMLINK_STRUCT_SIZE) {
1501 /* open must fail on symlink - reset rc */
1503 symlink = (struct smb2_symlink_err_rsp *)err_buf->ErrorData;
1504 sub_len = le16_to_cpu(symlink->SubstituteNameLength);
1505 sub_offset = le16_to_cpu(symlink->SubstituteNameOffset);
1506 print_len = le16_to_cpu(symlink->PrintNameLength);
1507 print_offset = le16_to_cpu(symlink->PrintNameOffset);
1509 if (err_iov.iov_len + server->vals->header_preamble_size <
1510 SMB2_SYMLINK_STRUCT_SIZE + sub_offset + sub_len) {
1515 if (err_iov.iov_len + server->vals->header_preamble_size <
1516 SMB2_SYMLINK_STRUCT_SIZE + print_offset + print_len) {
1521 *target_path = cifs_strndup_from_utf16(
1522 (char *)symlink->PathBuffer + sub_offset,
1523 sub_len, true, cifs_sb->local_nls);
1524 if (!(*target_path)) {
1528 convert_delimiter(*target_path, '/');
1529 cifs_dbg(FYI, "%s: target path: %s\n", __func__, *target_path);
1534 #ifdef CONFIG_CIFS_ACL
1535 static struct cifs_ntsd *
1536 get_smb2_acl_by_fid(struct cifs_sb_info *cifs_sb,
1537 const struct cifs_fid *cifsfid, u32 *pacllen)
1539 struct cifs_ntsd *pntsd = NULL;
1541 int rc = -EOPNOTSUPP;
1542 struct tcon_link *tlink = cifs_sb_tlink(cifs_sb);
1545 return ERR_CAST(tlink);
1548 cifs_dbg(FYI, "trying to get acl\n");
1550 rc = SMB2_query_acl(xid, tlink_tcon(tlink), cifsfid->persistent_fid,
1551 cifsfid->volatile_fid, (void **)&pntsd, pacllen);
1554 cifs_put_tlink(tlink);
1556 cifs_dbg(FYI, "%s: rc = %d ACL len %d\n", __func__, rc, *pacllen);
1563 static struct cifs_ntsd *
1564 get_smb2_acl_by_path(struct cifs_sb_info *cifs_sb,
1565 const char *path, u32 *pacllen)
1567 struct cifs_ntsd *pntsd = NULL;
1568 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
1571 struct cifs_tcon *tcon;
1572 struct tcon_link *tlink = cifs_sb_tlink(cifs_sb);
1573 struct cifs_fid fid;
1574 struct cifs_open_parms oparms;
1577 cifs_dbg(FYI, "get smb3 acl for path %s\n", path);
1579 return ERR_CAST(tlink);
1581 tcon = tlink_tcon(tlink);
1584 if (backup_cred(cifs_sb))
1585 oparms.create_options = CREATE_OPEN_BACKUP_INTENT;
1587 oparms.create_options = 0;
1589 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
1591 return ERR_PTR(-ENOMEM);
1594 oparms.desired_access = READ_CONTROL;
1595 oparms.disposition = FILE_OPEN;
1597 oparms.reconnect = false;
1599 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL);
1602 rc = SMB2_query_acl(xid, tlink_tcon(tlink), fid.persistent_fid,
1603 fid.volatile_fid, (void **)&pntsd, pacllen);
1604 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
1607 cifs_put_tlink(tlink);
1610 cifs_dbg(FYI, "%s: rc = %d ACL len %d\n", __func__, rc, *pacllen);
1616 #ifdef CONFIG_CIFS_ACL
1618 set_smb2_acl(struct cifs_ntsd *pnntsd, __u32 acllen,
1619 struct inode *inode, const char *path, int aclflag)
1621 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
1623 int rc, access_flags = 0;
1624 struct cifs_tcon *tcon;
1625 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
1626 struct tcon_link *tlink = cifs_sb_tlink(cifs_sb);
1627 struct cifs_fid fid;
1628 struct cifs_open_parms oparms;
1631 cifs_dbg(FYI, "set smb3 acl for path %s\n", path);
1633 return PTR_ERR(tlink);
1635 tcon = tlink_tcon(tlink);
1638 if (backup_cred(cifs_sb))
1639 oparms.create_options = CREATE_OPEN_BACKUP_INTENT;
1641 oparms.create_options = 0;
1643 if (aclflag == CIFS_ACL_OWNER || aclflag == CIFS_ACL_GROUP)
1644 access_flags = WRITE_OWNER;
1646 access_flags = WRITE_DAC;
1648 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
1653 oparms.desired_access = access_flags;
1654 oparms.disposition = FILE_OPEN;
1657 oparms.reconnect = false;
1659 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL);
1662 rc = SMB2_set_acl(xid, tlink_tcon(tlink), fid.persistent_fid,
1663 fid.volatile_fid, pnntsd, acllen, aclflag);
1664 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
1667 cifs_put_tlink(tlink);
1671 #endif /* CIFS_ACL */
1673 /* Retrieve an ACL from the server */
1674 static struct cifs_ntsd *
1675 get_smb2_acl(struct cifs_sb_info *cifs_sb,
1676 struct inode *inode, const char *path,
1679 struct cifs_ntsd *pntsd = NULL;
1680 struct cifsFileInfo *open_file = NULL;
1683 open_file = find_readable_file(CIFS_I(inode), true);
1685 return get_smb2_acl_by_path(cifs_sb, path, pacllen);
1687 pntsd = get_smb2_acl_by_fid(cifs_sb, &open_file->fid, pacllen);
1688 cifsFileInfo_put(open_file);
1693 static long smb3_zero_range(struct file *file, struct cifs_tcon *tcon,
1694 loff_t offset, loff_t len, bool keep_size)
1696 struct inode *inode;
1697 struct cifsInodeInfo *cifsi;
1698 struct cifsFileInfo *cfile = file->private_data;
1699 struct file_zero_data_information fsctl_buf;
1705 inode = d_inode(cfile->dentry);
1706 cifsi = CIFS_I(inode);
1708 /* if file not oplocked can't be sure whether asking to extend size */
1709 if (!CIFS_CACHE_READ(cifsi))
1710 if (keep_size == false)
1714 * Must check if file sparse since fallocate -z (zero range) assumes
1715 * non-sparse allocation
1717 if (!(cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE))
1721 * need to make sure we are not asked to extend the file since the SMB3
1722 * fsctl does not change the file size. In the future we could change
1723 * this to zero the first part of the range then set the file size
1724 * which for a non sparse file would zero the newly extended range
1726 if (keep_size == false)
1727 if (i_size_read(inode) < offset + len)
1730 cifs_dbg(FYI, "offset %lld len %lld", offset, len);
1732 fsctl_buf.FileOffset = cpu_to_le64(offset);
1733 fsctl_buf.BeyondFinalZero = cpu_to_le64(offset + len);
1735 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
1736 cfile->fid.volatile_fid, FSCTL_SET_ZERO_DATA,
1737 true /* is_fctl */, (char *)&fsctl_buf,
1738 sizeof(struct file_zero_data_information), NULL, NULL);
1743 static long smb3_punch_hole(struct file *file, struct cifs_tcon *tcon,
1744 loff_t offset, loff_t len)
1746 struct inode *inode;
1747 struct cifsInodeInfo *cifsi;
1748 struct cifsFileInfo *cfile = file->private_data;
1749 struct file_zero_data_information fsctl_buf;
1752 __u8 set_sparse = 1;
1756 inode = d_inode(cfile->dentry);
1757 cifsi = CIFS_I(inode);
1759 /* Need to make file sparse, if not already, before freeing range. */
1760 /* Consider adding equivalent for compressed since it could also work */
1761 if (!smb2_set_sparse(xid, tcon, cfile, inode, set_sparse))
1764 cifs_dbg(FYI, "offset %lld len %lld", offset, len);
1766 fsctl_buf.FileOffset = cpu_to_le64(offset);
1767 fsctl_buf.BeyondFinalZero = cpu_to_le64(offset + len);
1769 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
1770 cfile->fid.volatile_fid, FSCTL_SET_ZERO_DATA,
1771 true /* is_fctl */, (char *)&fsctl_buf,
1772 sizeof(struct file_zero_data_information), NULL, NULL);
1777 static long smb3_simple_falloc(struct file *file, struct cifs_tcon *tcon,
1778 loff_t off, loff_t len, bool keep_size)
1780 struct inode *inode;
1781 struct cifsInodeInfo *cifsi;
1782 struct cifsFileInfo *cfile = file->private_data;
1783 long rc = -EOPNOTSUPP;
1788 inode = d_inode(cfile->dentry);
1789 cifsi = CIFS_I(inode);
1791 /* if file not oplocked can't be sure whether asking to extend size */
1792 if (!CIFS_CACHE_READ(cifsi))
1793 if (keep_size == false)
1797 * Files are non-sparse by default so falloc may be a no-op
1798 * Must check if file sparse. If not sparse, and not extending
1799 * then no need to do anything since file already allocated
1801 if ((cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) == 0) {
1802 if (keep_size == true)
1804 /* check if extending file */
1805 else if (i_size_read(inode) >= off + len)
1806 /* not extending file and already not sparse */
1808 /* BB: in future add else clause to extend file */
1813 if ((keep_size == true) || (i_size_read(inode) >= off + len)) {
1815 * Check if falloc starts within first few pages of file
1816 * and ends within a few pages of the end of file to
1817 * ensure that most of file is being forced to be
1818 * fallocated now. If so then setting whole file sparse
1819 * ie potentially making a few extra pages at the beginning
1820 * or end of the file non-sparse via set_sparse is harmless.
1822 if ((off > 8192) || (off + len + 8192 < i_size_read(inode)))
1825 rc = smb2_set_sparse(xid, tcon, cfile, inode, false);
1827 /* BB: else ... in future add code to extend file and set sparse */
1835 static long smb3_fallocate(struct file *file, struct cifs_tcon *tcon, int mode,
1836 loff_t off, loff_t len)
1838 /* KEEP_SIZE already checked for by do_fallocate */
1839 if (mode & FALLOC_FL_PUNCH_HOLE)
1840 return smb3_punch_hole(file, tcon, off, len);
1841 else if (mode & FALLOC_FL_ZERO_RANGE) {
1842 if (mode & FALLOC_FL_KEEP_SIZE)
1843 return smb3_zero_range(file, tcon, off, len, true);
1844 return smb3_zero_range(file, tcon, off, len, false);
1845 } else if (mode == FALLOC_FL_KEEP_SIZE)
1846 return smb3_simple_falloc(file, tcon, off, len, true);
1848 return smb3_simple_falloc(file, tcon, off, len, false);
1854 smb2_downgrade_oplock(struct TCP_Server_Info *server,
1855 struct cifsInodeInfo *cinode, bool set_level2)
1858 server->ops->set_oplock_level(cinode, SMB2_OPLOCK_LEVEL_II,
1861 server->ops->set_oplock_level(cinode, 0, 0, NULL);
1865 smb2_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
1866 unsigned int epoch, bool *purge_cache)
1869 if (oplock == SMB2_OPLOCK_LEVEL_NOCHANGE)
1871 if (oplock == SMB2_OPLOCK_LEVEL_BATCH) {
1872 cinode->oplock = CIFS_CACHE_RHW_FLG;
1873 cifs_dbg(FYI, "Batch Oplock granted on inode %p\n",
1874 &cinode->vfs_inode);
1875 } else if (oplock == SMB2_OPLOCK_LEVEL_EXCLUSIVE) {
1876 cinode->oplock = CIFS_CACHE_RW_FLG;
1877 cifs_dbg(FYI, "Exclusive Oplock granted on inode %p\n",
1878 &cinode->vfs_inode);
1879 } else if (oplock == SMB2_OPLOCK_LEVEL_II) {
1880 cinode->oplock = CIFS_CACHE_READ_FLG;
1881 cifs_dbg(FYI, "Level II Oplock granted on inode %p\n",
1882 &cinode->vfs_inode);
1888 smb21_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
1889 unsigned int epoch, bool *purge_cache)
1891 char message[5] = {0};
1894 if (oplock == SMB2_OPLOCK_LEVEL_NOCHANGE)
1898 if (oplock & SMB2_LEASE_READ_CACHING_HE) {
1899 cinode->oplock |= CIFS_CACHE_READ_FLG;
1900 strcat(message, "R");
1902 if (oplock & SMB2_LEASE_HANDLE_CACHING_HE) {
1903 cinode->oplock |= CIFS_CACHE_HANDLE_FLG;
1904 strcat(message, "H");
1906 if (oplock & SMB2_LEASE_WRITE_CACHING_HE) {
1907 cinode->oplock |= CIFS_CACHE_WRITE_FLG;
1908 strcat(message, "W");
1910 if (!cinode->oplock)
1911 strcat(message, "None");
1912 cifs_dbg(FYI, "%s Lease granted on inode %p\n", message,
1913 &cinode->vfs_inode);
1917 smb3_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
1918 unsigned int epoch, bool *purge_cache)
1920 unsigned int old_oplock = cinode->oplock;
1922 smb21_set_oplock_level(cinode, oplock, epoch, purge_cache);
1925 *purge_cache = false;
1926 if (old_oplock == CIFS_CACHE_READ_FLG) {
1927 if (cinode->oplock == CIFS_CACHE_READ_FLG &&
1928 (epoch - cinode->epoch > 0))
1929 *purge_cache = true;
1930 else if (cinode->oplock == CIFS_CACHE_RH_FLG &&
1931 (epoch - cinode->epoch > 1))
1932 *purge_cache = true;
1933 else if (cinode->oplock == CIFS_CACHE_RHW_FLG &&
1934 (epoch - cinode->epoch > 1))
1935 *purge_cache = true;
1936 else if (cinode->oplock == 0 &&
1937 (epoch - cinode->epoch > 0))
1938 *purge_cache = true;
1939 } else if (old_oplock == CIFS_CACHE_RH_FLG) {
1940 if (cinode->oplock == CIFS_CACHE_RH_FLG &&
1941 (epoch - cinode->epoch > 0))
1942 *purge_cache = true;
1943 else if (cinode->oplock == CIFS_CACHE_RHW_FLG &&
1944 (epoch - cinode->epoch > 1))
1945 *purge_cache = true;
1947 cinode->epoch = epoch;
1952 smb2_is_read_op(__u32 oplock)
1954 return oplock == SMB2_OPLOCK_LEVEL_II;
1958 smb21_is_read_op(__u32 oplock)
1960 return (oplock & SMB2_LEASE_READ_CACHING_HE) &&
1961 !(oplock & SMB2_LEASE_WRITE_CACHING_HE);
1965 map_oplock_to_lease(u8 oplock)
1967 if (oplock == SMB2_OPLOCK_LEVEL_EXCLUSIVE)
1968 return SMB2_LEASE_WRITE_CACHING | SMB2_LEASE_READ_CACHING;
1969 else if (oplock == SMB2_OPLOCK_LEVEL_II)
1970 return SMB2_LEASE_READ_CACHING;
1971 else if (oplock == SMB2_OPLOCK_LEVEL_BATCH)
1972 return SMB2_LEASE_HANDLE_CACHING | SMB2_LEASE_READ_CACHING |
1973 SMB2_LEASE_WRITE_CACHING;
1978 smb2_create_lease_buf(u8 *lease_key, u8 oplock)
1980 struct create_lease *buf;
1982 buf = kzalloc(sizeof(struct create_lease), GFP_KERNEL);
1986 buf->lcontext.LeaseKeyLow = cpu_to_le64(*((u64 *)lease_key));
1987 buf->lcontext.LeaseKeyHigh = cpu_to_le64(*((u64 *)(lease_key + 8)));
1988 buf->lcontext.LeaseState = map_oplock_to_lease(oplock);
1990 buf->ccontext.DataOffset = cpu_to_le16(offsetof
1991 (struct create_lease, lcontext));
1992 buf->ccontext.DataLength = cpu_to_le32(sizeof(struct lease_context));
1993 buf->ccontext.NameOffset = cpu_to_le16(offsetof
1994 (struct create_lease, Name));
1995 buf->ccontext.NameLength = cpu_to_le16(4);
1996 /* SMB2_CREATE_REQUEST_LEASE is "RqLs" */
2005 smb3_create_lease_buf(u8 *lease_key, u8 oplock)
2007 struct create_lease_v2 *buf;
2009 buf = kzalloc(sizeof(struct create_lease_v2), GFP_KERNEL);
2013 buf->lcontext.LeaseKeyLow = cpu_to_le64(*((u64 *)lease_key));
2014 buf->lcontext.LeaseKeyHigh = cpu_to_le64(*((u64 *)(lease_key + 8)));
2015 buf->lcontext.LeaseState = map_oplock_to_lease(oplock);
2017 buf->ccontext.DataOffset = cpu_to_le16(offsetof
2018 (struct create_lease_v2, lcontext));
2019 buf->ccontext.DataLength = cpu_to_le32(sizeof(struct lease_context_v2));
2020 buf->ccontext.NameOffset = cpu_to_le16(offsetof
2021 (struct create_lease_v2, Name));
2022 buf->ccontext.NameLength = cpu_to_le16(4);
2023 /* SMB2_CREATE_REQUEST_LEASE is "RqLs" */
2032 smb2_parse_lease_buf(void *buf, unsigned int *epoch)
2034 struct create_lease *lc = (struct create_lease *)buf;
2036 *epoch = 0; /* not used */
2037 if (lc->lcontext.LeaseFlags & SMB2_LEASE_FLAG_BREAK_IN_PROGRESS)
2038 return SMB2_OPLOCK_LEVEL_NOCHANGE;
2039 return le32_to_cpu(lc->lcontext.LeaseState);
2043 smb3_parse_lease_buf(void *buf, unsigned int *epoch)
2045 struct create_lease_v2 *lc = (struct create_lease_v2 *)buf;
2047 *epoch = le16_to_cpu(lc->lcontext.Epoch);
2048 if (lc->lcontext.LeaseFlags & SMB2_LEASE_FLAG_BREAK_IN_PROGRESS)
2049 return SMB2_OPLOCK_LEVEL_NOCHANGE;
2050 return le32_to_cpu(lc->lcontext.LeaseState);
2054 smb2_wp_retry_size(struct inode *inode)
2056 return min_t(unsigned int, CIFS_SB(inode->i_sb)->wsize,
2057 SMB2_MAX_BUFFER_SIZE);
2061 smb2_dir_needs_close(struct cifsFileInfo *cfile)
2063 return !cfile->invalidHandle;
2067 fill_transform_hdr(struct TCP_Server_Info *server,
2068 struct smb2_transform_hdr *tr_hdr, struct smb_rqst *old_rq)
2070 struct smb2_sync_hdr *shdr =
2071 (struct smb2_sync_hdr *)old_rq->rq_iov[1].iov_base;
2072 unsigned int orig_len = get_rfc1002_length(old_rq->rq_iov[0].iov_base);
2074 memset(tr_hdr, 0, sizeof(struct smb2_transform_hdr));
2075 tr_hdr->ProtocolId = SMB2_TRANSFORM_PROTO_NUM;
2076 tr_hdr->OriginalMessageSize = cpu_to_le32(orig_len);
2077 tr_hdr->Flags = cpu_to_le16(0x01);
2078 get_random_bytes(&tr_hdr->Nonce, SMB3_AES128CMM_NONCE);
2079 memcpy(&tr_hdr->SessionId, &shdr->SessionId, 8);
2080 inc_rfc1001_len(tr_hdr, sizeof(struct smb2_transform_hdr) - server->vals->header_preamble_size);
2081 inc_rfc1001_len(tr_hdr, orig_len);
2084 /* We can not use the normal sg_set_buf() as we will sometimes pass a
2085 * stack object as buf.
2087 static inline void smb2_sg_set_buf(struct scatterlist *sg, const void *buf,
2088 unsigned int buflen)
2090 sg_set_page(sg, virt_to_page(buf), buflen, offset_in_page(buf));
2093 static struct scatterlist *
2094 init_sg(struct smb_rqst *rqst, u8 *sign)
2096 unsigned int sg_len = rqst->rq_nvec + rqst->rq_npages + 1;
2097 unsigned int assoc_data_len = sizeof(struct smb2_transform_hdr) - 24;
2098 struct scatterlist *sg;
2102 sg = kmalloc_array(sg_len, sizeof(struct scatterlist), GFP_KERNEL);
2106 sg_init_table(sg, sg_len);
2107 smb2_sg_set_buf(&sg[0], rqst->rq_iov[0].iov_base + 24, assoc_data_len);
2108 for (i = 1; i < rqst->rq_nvec; i++)
2109 smb2_sg_set_buf(&sg[i], rqst->rq_iov[i].iov_base,
2110 rqst->rq_iov[i].iov_len);
2111 for (j = 0; i < sg_len - 1; i++, j++) {
2112 unsigned int len = (j < rqst->rq_npages - 1) ? rqst->rq_pagesz
2114 sg_set_page(&sg[i], rqst->rq_pages[j], len, 0);
2116 smb2_sg_set_buf(&sg[sg_len - 1], sign, SMB2_SIGNATURE_SIZE);
2121 smb2_get_enc_key(struct TCP_Server_Info *server, __u64 ses_id, int enc, u8 *key)
2123 struct cifs_ses *ses;
2126 spin_lock(&cifs_tcp_ses_lock);
2127 list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) {
2128 if (ses->Suid != ses_id)
2130 ses_enc_key = enc ? ses->smb3encryptionkey :
2131 ses->smb3decryptionkey;
2132 memcpy(key, ses_enc_key, SMB3_SIGN_KEY_SIZE);
2133 spin_unlock(&cifs_tcp_ses_lock);
2136 spin_unlock(&cifs_tcp_ses_lock);
2141 * Encrypt or decrypt @rqst message. @rqst has the following format:
2142 * iov[0] - transform header (associate data),
2143 * iov[1-N] and pages - data to encrypt.
2144 * On success return encrypted data in iov[1-N] and pages, leave iov[0]
2148 crypt_message(struct TCP_Server_Info *server, struct smb_rqst *rqst, int enc)
2150 struct smb2_transform_hdr *tr_hdr =
2151 (struct smb2_transform_hdr *)rqst->rq_iov[0].iov_base;
2152 unsigned int assoc_data_len = sizeof(struct smb2_transform_hdr) - 20 - server->vals->header_preamble_size;
2154 struct scatterlist *sg;
2155 u8 sign[SMB2_SIGNATURE_SIZE] = {};
2156 u8 key[SMB3_SIGN_KEY_SIZE];
2157 struct aead_request *req;
2159 unsigned int iv_len;
2160 DECLARE_CRYPTO_WAIT(wait);
2161 struct crypto_aead *tfm;
2162 unsigned int crypt_len = le32_to_cpu(tr_hdr->OriginalMessageSize);
2164 rc = smb2_get_enc_key(server, tr_hdr->SessionId, enc, key);
2166 cifs_dbg(VFS, "%s: Could not get %scryption key\n", __func__,
2171 rc = smb3_crypto_aead_allocate(server);
2173 cifs_dbg(VFS, "%s: crypto alloc failed\n", __func__);
2177 tfm = enc ? server->secmech.ccmaesencrypt :
2178 server->secmech.ccmaesdecrypt;
2179 rc = crypto_aead_setkey(tfm, key, SMB3_SIGN_KEY_SIZE);
2181 cifs_dbg(VFS, "%s: Failed to set aead key %d\n", __func__, rc);
2185 rc = crypto_aead_setauthsize(tfm, SMB2_SIGNATURE_SIZE);
2187 cifs_dbg(VFS, "%s: Failed to set authsize %d\n", __func__, rc);
2191 req = aead_request_alloc(tfm, GFP_KERNEL);
2193 cifs_dbg(VFS, "%s: Failed to alloc aead request", __func__);
2198 memcpy(sign, &tr_hdr->Signature, SMB2_SIGNATURE_SIZE);
2199 crypt_len += SMB2_SIGNATURE_SIZE;
2202 sg = init_sg(rqst, sign);
2204 cifs_dbg(VFS, "%s: Failed to init sg", __func__);
2209 iv_len = crypto_aead_ivsize(tfm);
2210 iv = kzalloc(iv_len, GFP_KERNEL);
2212 cifs_dbg(VFS, "%s: Failed to alloc IV", __func__);
2217 memcpy(iv + 1, (char *)tr_hdr->Nonce, SMB3_AES128CMM_NONCE);
2219 aead_request_set_crypt(req, sg, sg, crypt_len, iv);
2220 aead_request_set_ad(req, assoc_data_len);
2222 aead_request_set_callback(req, CRYPTO_TFM_REQ_MAY_BACKLOG,
2223 crypto_req_done, &wait);
2225 rc = crypto_wait_req(enc ? crypto_aead_encrypt(req)
2226 : crypto_aead_decrypt(req), &wait);
2229 memcpy(&tr_hdr->Signature, sign, SMB2_SIGNATURE_SIZE);
2240 smb3_init_transform_rq(struct TCP_Server_Info *server, struct smb_rqst *new_rq,
2241 struct smb_rqst *old_rq)
2244 struct page **pages;
2245 struct smb2_transform_hdr *tr_hdr;
2246 unsigned int npages = old_rq->rq_npages;
2250 pages = kmalloc_array(npages, sizeof(struct page *), GFP_KERNEL);
2254 new_rq->rq_pages = pages;
2255 new_rq->rq_npages = old_rq->rq_npages;
2256 new_rq->rq_pagesz = old_rq->rq_pagesz;
2257 new_rq->rq_tailsz = old_rq->rq_tailsz;
2259 for (i = 0; i < npages; i++) {
2260 pages[i] = alloc_page(GFP_KERNEL|__GFP_HIGHMEM);
2262 goto err_free_pages;
2265 iov = kmalloc_array(old_rq->rq_nvec, sizeof(struct kvec), GFP_KERNEL);
2267 goto err_free_pages;
2269 /* copy all iovs from the old except the 1st one (rfc1002 length) */
2270 memcpy(&iov[1], &old_rq->rq_iov[1],
2271 sizeof(struct kvec) * (old_rq->rq_nvec - 1));
2272 new_rq->rq_iov = iov;
2273 new_rq->rq_nvec = old_rq->rq_nvec;
2275 tr_hdr = kmalloc(sizeof(struct smb2_transform_hdr), GFP_KERNEL);
2279 /* fill the 1st iov with a transform header */
2280 fill_transform_hdr(server, tr_hdr, old_rq);
2281 new_rq->rq_iov[0].iov_base = tr_hdr;
2282 new_rq->rq_iov[0].iov_len = sizeof(struct smb2_transform_hdr);
2284 /* copy pages form the old */
2285 for (i = 0; i < npages; i++) {
2286 char *dst = kmap(new_rq->rq_pages[i]);
2287 char *src = kmap(old_rq->rq_pages[i]);
2288 unsigned int len = (i < npages - 1) ? new_rq->rq_pagesz :
2290 memcpy(dst, src, len);
2291 kunmap(new_rq->rq_pages[i]);
2292 kunmap(old_rq->rq_pages[i]);
2295 rc = crypt_message(server, new_rq, 1);
2296 cifs_dbg(FYI, "encrypt message returned %d", rc);
2298 goto err_free_tr_hdr;
2307 for (i = i - 1; i >= 0; i--)
2314 smb3_free_transform_rq(struct smb_rqst *rqst)
2316 int i = rqst->rq_npages - 1;
2319 put_page(rqst->rq_pages[i]);
2320 kfree(rqst->rq_pages);
2321 /* free transform header */
2322 kfree(rqst->rq_iov[0].iov_base);
2323 kfree(rqst->rq_iov);
2327 smb3_is_transform_hdr(void *buf)
2329 struct smb2_transform_hdr *trhdr = buf;
2331 return trhdr->ProtocolId == SMB2_TRANSFORM_PROTO_NUM;
2335 decrypt_raw_data(struct TCP_Server_Info *server, char *buf,
2336 unsigned int buf_data_size, struct page **pages,
2337 unsigned int npages, unsigned int page_data_size)
2340 struct smb_rqst rqst = {NULL};
2341 struct smb2_hdr *hdr;
2344 iov[0].iov_base = buf;
2345 iov[0].iov_len = sizeof(struct smb2_transform_hdr);
2346 iov[1].iov_base = buf + sizeof(struct smb2_transform_hdr);
2347 iov[1].iov_len = buf_data_size;
2351 rqst.rq_pages = pages;
2352 rqst.rq_npages = npages;
2353 rqst.rq_pagesz = PAGE_SIZE;
2354 rqst.rq_tailsz = (page_data_size % PAGE_SIZE) ? : PAGE_SIZE;
2356 rc = crypt_message(server, &rqst, 0);
2357 cifs_dbg(FYI, "decrypt message returned %d\n", rc);
2362 memmove(buf + server->vals->header_preamble_size, iov[1].iov_base, buf_data_size);
2363 hdr = (struct smb2_hdr *)buf;
2364 hdr->smb2_buf_length = cpu_to_be32(buf_data_size + page_data_size);
2365 server->total_read = buf_data_size + page_data_size + server->vals->header_preamble_size;
2371 read_data_into_pages(struct TCP_Server_Info *server, struct page **pages,
2372 unsigned int npages, unsigned int len)
2377 for (i = 0; i < npages; i++) {
2378 struct page *page = pages[i];
2382 if (len >= PAGE_SIZE) {
2383 /* enough data to fill the page */
2387 zero_user(page, len, PAGE_SIZE - len);
2390 length = cifs_read_page_from_socket(server, page, n);
2393 server->total_read += length;
2400 init_read_bvec(struct page **pages, unsigned int npages, unsigned int data_size,
2401 unsigned int cur_off, struct bio_vec **page_vec)
2403 struct bio_vec *bvec;
2406 bvec = kcalloc(npages, sizeof(struct bio_vec), GFP_KERNEL);
2410 for (i = 0; i < npages; i++) {
2411 bvec[i].bv_page = pages[i];
2412 bvec[i].bv_offset = (i == 0) ? cur_off : 0;
2413 bvec[i].bv_len = min_t(unsigned int, PAGE_SIZE, data_size);
2414 data_size -= bvec[i].bv_len;
2417 if (data_size != 0) {
2418 cifs_dbg(VFS, "%s: something went wrong\n", __func__);
2428 handle_read_data(struct TCP_Server_Info *server, struct mid_q_entry *mid,
2429 char *buf, unsigned int buf_len, struct page **pages,
2430 unsigned int npages, unsigned int page_data_size)
2432 unsigned int data_offset;
2433 unsigned int data_len;
2434 unsigned int cur_off;
2435 unsigned int cur_page_idx;
2436 unsigned int pad_len;
2437 struct cifs_readdata *rdata = mid->callback_data;
2438 struct smb2_sync_hdr *shdr = get_sync_hdr(buf);
2439 struct bio_vec *bvec = NULL;
2440 struct iov_iter iter;
2443 bool use_rdma_mr = false;
2445 if (shdr->Command != SMB2_READ) {
2446 cifs_dbg(VFS, "only big read responses are supported\n");
2450 if (server->ops->is_session_expired &&
2451 server->ops->is_session_expired(buf)) {
2452 cifs_reconnect(server);
2453 wake_up(&server->response_q);
2457 if (server->ops->is_status_pending &&
2458 server->ops->is_status_pending(buf, server, 0))
2461 rdata->result = server->ops->map_error(buf, false);
2462 if (rdata->result != 0) {
2463 cifs_dbg(FYI, "%s: server returned error %d\n",
2464 __func__, rdata->result);
2465 dequeue_mid(mid, rdata->result);
2469 data_offset = server->ops->read_data_offset(buf) + server->vals->header_preamble_size;
2470 #ifdef CONFIG_CIFS_SMB_DIRECT
2471 use_rdma_mr = rdata->mr;
2473 data_len = server->ops->read_data_length(buf, use_rdma_mr);
2475 if (data_offset < server->vals->read_rsp_size) {
2477 * win2k8 sometimes sends an offset of 0 when the read
2478 * is beyond the EOF. Treat it as if the data starts just after
2481 cifs_dbg(FYI, "%s: data offset (%u) inside read response header\n",
2482 __func__, data_offset);
2483 data_offset = server->vals->read_rsp_size;
2484 } else if (data_offset > MAX_CIFS_SMALL_BUFFER_SIZE) {
2485 /* data_offset is beyond the end of smallbuf */
2486 cifs_dbg(FYI, "%s: data offset (%u) beyond end of smallbuf\n",
2487 __func__, data_offset);
2488 rdata->result = -EIO;
2489 dequeue_mid(mid, rdata->result);
2493 pad_len = data_offset - server->vals->read_rsp_size;
2495 if (buf_len <= data_offset) {
2496 /* read response payload is in pages */
2497 cur_page_idx = pad_len / PAGE_SIZE;
2498 cur_off = pad_len % PAGE_SIZE;
2500 if (cur_page_idx != 0) {
2501 /* data offset is beyond the 1st page of response */
2502 cifs_dbg(FYI, "%s: data offset (%u) beyond 1st page of response\n",
2503 __func__, data_offset);
2504 rdata->result = -EIO;
2505 dequeue_mid(mid, rdata->result);
2509 if (data_len > page_data_size - pad_len) {
2510 /* data_len is corrupt -- discard frame */
2511 rdata->result = -EIO;
2512 dequeue_mid(mid, rdata->result);
2516 rdata->result = init_read_bvec(pages, npages, page_data_size,
2518 if (rdata->result != 0) {
2519 dequeue_mid(mid, rdata->result);
2523 iov_iter_bvec(&iter, WRITE | ITER_BVEC, bvec, npages, data_len);
2524 } else if (buf_len >= data_offset + data_len) {
2525 /* read response payload is in buf */
2526 WARN_ONCE(npages > 0, "read data can be either in buf or in pages");
2527 iov.iov_base = buf + data_offset;
2528 iov.iov_len = data_len;
2529 iov_iter_kvec(&iter, WRITE | ITER_KVEC, &iov, 1, data_len);
2531 /* read response payload cannot be in both buf and pages */
2532 WARN_ONCE(1, "buf can not contain only a part of read data");
2533 rdata->result = -EIO;
2534 dequeue_mid(mid, rdata->result);
2538 /* set up first iov for signature check */
2539 rdata->iov[0].iov_base = buf;
2540 rdata->iov[0].iov_len = 4;
2541 rdata->iov[1].iov_base = buf + 4;
2542 rdata->iov[1].iov_len = server->vals->read_rsp_size - 4;
2543 cifs_dbg(FYI, "0: iov_base=%p iov_len=%zu\n",
2544 rdata->iov[0].iov_base, server->vals->read_rsp_size);
2546 length = rdata->copy_into_pages(server, rdata, &iter);
2553 dequeue_mid(mid, false);
2558 receive_encrypted_read(struct TCP_Server_Info *server, struct mid_q_entry **mid)
2560 char *buf = server->smallbuf;
2561 struct smb2_transform_hdr *tr_hdr = (struct smb2_transform_hdr *)buf;
2562 unsigned int npages;
2563 struct page **pages;
2565 unsigned int buflen = server->pdu_size + server->vals->header_preamble_size;
2569 len = min_t(unsigned int, buflen, server->vals->read_rsp_size -
2570 server->vals->header_preamble_size +
2571 sizeof(struct smb2_transform_hdr)) - HEADER_SIZE(server) + 1;
2573 rc = cifs_read_from_socket(server, buf + HEADER_SIZE(server) - 1, len);
2576 server->total_read += rc;
2578 len = le32_to_cpu(tr_hdr->OriginalMessageSize) +
2579 server->vals->header_preamble_size -
2580 server->vals->read_rsp_size;
2581 npages = DIV_ROUND_UP(len, PAGE_SIZE);
2583 pages = kmalloc_array(npages, sizeof(struct page *), GFP_KERNEL);
2589 for (; i < npages; i++) {
2590 pages[i] = alloc_page(GFP_KERNEL|__GFP_HIGHMEM);
2597 /* read read data into pages */
2598 rc = read_data_into_pages(server, pages, npages, len);
2602 rc = cifs_discard_remaining_data(server);
2606 rc = decrypt_raw_data(server, buf, server->vals->read_rsp_size -
2607 server->vals->header_preamble_size,
2608 pages, npages, len);
2612 *mid = smb2_find_mid(server, buf);
2614 cifs_dbg(FYI, "mid not found\n");
2616 cifs_dbg(FYI, "mid found\n");
2617 (*mid)->decrypted = true;
2618 rc = handle_read_data(server, *mid, buf,
2619 server->vals->read_rsp_size,
2620 pages, npages, len);
2624 for (i = i - 1; i >= 0; i--)
2629 cifs_discard_remaining_data(server);
2634 receive_encrypted_standard(struct TCP_Server_Info *server,
2635 struct mid_q_entry **mid)
2638 char *buf = server->smallbuf;
2639 unsigned int pdu_length = server->pdu_size;
2640 unsigned int buf_size;
2641 struct mid_q_entry *mid_entry;
2643 /* switch to large buffer if too big for a small one */
2644 if (pdu_length + server->vals->header_preamble_size > MAX_CIFS_SMALL_BUFFER_SIZE) {
2645 server->large_buf = true;
2646 memcpy(server->bigbuf, buf, server->total_read);
2647 buf = server->bigbuf;
2650 /* now read the rest */
2651 length = cifs_read_from_socket(server, buf + HEADER_SIZE(server) - 1,
2652 pdu_length - HEADER_SIZE(server) + 1 +
2653 server->vals->header_preamble_size);
2656 server->total_read += length;
2658 buf_size = pdu_length + server->vals->header_preamble_size - sizeof(struct smb2_transform_hdr);
2659 length = decrypt_raw_data(server, buf, buf_size, NULL, 0, 0);
2663 mid_entry = smb2_find_mid(server, buf);
2664 if (mid_entry == NULL)
2665 cifs_dbg(FYI, "mid not found\n");
2667 cifs_dbg(FYI, "mid found\n");
2668 mid_entry->decrypted = true;
2673 if (mid_entry && mid_entry->handle)
2674 return mid_entry->handle(server, mid_entry);
2676 return cifs_handle_standard(server, mid_entry);
2680 smb3_receive_transform(struct TCP_Server_Info *server, struct mid_q_entry **mid)
2682 char *buf = server->smallbuf;
2683 unsigned int pdu_length = server->pdu_size;
2684 struct smb2_transform_hdr *tr_hdr = (struct smb2_transform_hdr *)buf;
2685 unsigned int orig_len = le32_to_cpu(tr_hdr->OriginalMessageSize);
2687 if (pdu_length + server->vals->header_preamble_size < sizeof(struct smb2_transform_hdr) +
2688 sizeof(struct smb2_sync_hdr)) {
2689 cifs_dbg(VFS, "Transform message is too small (%u)\n",
2691 cifs_reconnect(server);
2692 wake_up(&server->response_q);
2693 return -ECONNABORTED;
2696 if (pdu_length + server->vals->header_preamble_size < orig_len + sizeof(struct smb2_transform_hdr)) {
2697 cifs_dbg(VFS, "Transform message is broken\n");
2698 cifs_reconnect(server);
2699 wake_up(&server->response_q);
2700 return -ECONNABORTED;
2703 if (pdu_length + server->vals->header_preamble_size > CIFSMaxBufSize + MAX_HEADER_SIZE(server))
2704 return receive_encrypted_read(server, mid);
2706 return receive_encrypted_standard(server, mid);
2710 smb3_handle_read_data(struct TCP_Server_Info *server, struct mid_q_entry *mid)
2712 char *buf = server->large_buf ? server->bigbuf : server->smallbuf;
2714 return handle_read_data(server, mid, buf, server->pdu_size +
2715 server->vals->header_preamble_size,
2719 struct smb_version_operations smb20_operations = {
2720 .compare_fids = smb2_compare_fids,
2721 .setup_request = smb2_setup_request,
2722 .setup_async_request = smb2_setup_async_request,
2723 .check_receive = smb2_check_receive,
2724 .add_credits = smb2_add_credits,
2725 .set_credits = smb2_set_credits,
2726 .get_credits_field = smb2_get_credits_field,
2727 .get_credits = smb2_get_credits,
2728 .wait_mtu_credits = cifs_wait_mtu_credits,
2729 .get_next_mid = smb2_get_next_mid,
2730 .read_data_offset = smb2_read_data_offset,
2731 .read_data_length = smb2_read_data_length,
2732 .map_error = map_smb2_to_linux_error,
2733 .find_mid = smb2_find_mid,
2734 .check_message = smb2_check_message,
2735 .dump_detail = smb2_dump_detail,
2736 .clear_stats = smb2_clear_stats,
2737 .print_stats = smb2_print_stats,
2738 .is_oplock_break = smb2_is_valid_oplock_break,
2739 .handle_cancelled_mid = smb2_handle_cancelled_mid,
2740 .downgrade_oplock = smb2_downgrade_oplock,
2741 .need_neg = smb2_need_neg,
2742 .negotiate = smb2_negotiate,
2743 .negotiate_wsize = smb2_negotiate_wsize,
2744 .negotiate_rsize = smb2_negotiate_rsize,
2745 .sess_setup = SMB2_sess_setup,
2746 .logoff = SMB2_logoff,
2747 .tree_connect = SMB2_tcon,
2748 .tree_disconnect = SMB2_tdis,
2749 .qfs_tcon = smb2_qfs_tcon,
2750 .is_path_accessible = smb2_is_path_accessible,
2751 .can_echo = smb2_can_echo,
2753 .query_path_info = smb2_query_path_info,
2754 .get_srv_inum = smb2_get_srv_inum,
2755 .query_file_info = smb2_query_file_info,
2756 .set_path_size = smb2_set_path_size,
2757 .set_file_size = smb2_set_file_size,
2758 .set_file_info = smb2_set_file_info,
2759 .set_compression = smb2_set_compression,
2760 .mkdir = smb2_mkdir,
2761 .mkdir_setinfo = smb2_mkdir_setinfo,
2762 .rmdir = smb2_rmdir,
2763 .unlink = smb2_unlink,
2764 .rename = smb2_rename_path,
2765 .create_hardlink = smb2_create_hardlink,
2766 .query_symlink = smb2_query_symlink,
2767 .query_mf_symlink = smb3_query_mf_symlink,
2768 .create_mf_symlink = smb3_create_mf_symlink,
2769 .open = smb2_open_file,
2770 .set_fid = smb2_set_fid,
2771 .close = smb2_close_file,
2772 .flush = smb2_flush_file,
2773 .async_readv = smb2_async_readv,
2774 .async_writev = smb2_async_writev,
2775 .sync_read = smb2_sync_read,
2776 .sync_write = smb2_sync_write,
2777 .query_dir_first = smb2_query_dir_first,
2778 .query_dir_next = smb2_query_dir_next,
2779 .close_dir = smb2_close_dir,
2780 .calc_smb_size = smb2_calc_size,
2781 .is_status_pending = smb2_is_status_pending,
2782 .is_session_expired = smb2_is_session_expired,
2783 .oplock_response = smb2_oplock_response,
2784 .queryfs = smb2_queryfs,
2785 .mand_lock = smb2_mand_lock,
2786 .mand_unlock_range = smb2_unlock_range,
2787 .push_mand_locks = smb2_push_mandatory_locks,
2788 .get_lease_key = smb2_get_lease_key,
2789 .set_lease_key = smb2_set_lease_key,
2790 .new_lease_key = smb2_new_lease_key,
2791 .calc_signature = smb2_calc_signature,
2792 .is_read_op = smb2_is_read_op,
2793 .set_oplock_level = smb2_set_oplock_level,
2794 .create_lease_buf = smb2_create_lease_buf,
2795 .parse_lease_buf = smb2_parse_lease_buf,
2796 .copychunk_range = smb2_copychunk_range,
2797 .wp_retry_size = smb2_wp_retry_size,
2798 .dir_needs_close = smb2_dir_needs_close,
2799 .get_dfs_refer = smb2_get_dfs_refer,
2800 .select_sectype = smb2_select_sectype,
2801 #ifdef CONFIG_CIFS_XATTR
2802 .query_all_EAs = smb2_query_eas,
2803 .set_EA = smb2_set_ea,
2804 #endif /* CIFS_XATTR */
2805 #ifdef CONFIG_CIFS_ACL
2806 .get_acl = get_smb2_acl,
2807 .get_acl_by_fid = get_smb2_acl_by_fid,
2808 .set_acl = set_smb2_acl,
2809 #endif /* CIFS_ACL */
2812 struct smb_version_operations smb21_operations = {
2813 .compare_fids = smb2_compare_fids,
2814 .setup_request = smb2_setup_request,
2815 .setup_async_request = smb2_setup_async_request,
2816 .check_receive = smb2_check_receive,
2817 .add_credits = smb2_add_credits,
2818 .set_credits = smb2_set_credits,
2819 .get_credits_field = smb2_get_credits_field,
2820 .get_credits = smb2_get_credits,
2821 .wait_mtu_credits = smb2_wait_mtu_credits,
2822 .get_next_mid = smb2_get_next_mid,
2823 .read_data_offset = smb2_read_data_offset,
2824 .read_data_length = smb2_read_data_length,
2825 .map_error = map_smb2_to_linux_error,
2826 .find_mid = smb2_find_mid,
2827 .check_message = smb2_check_message,
2828 .dump_detail = smb2_dump_detail,
2829 .clear_stats = smb2_clear_stats,
2830 .print_stats = smb2_print_stats,
2831 .is_oplock_break = smb2_is_valid_oplock_break,
2832 .handle_cancelled_mid = smb2_handle_cancelled_mid,
2833 .downgrade_oplock = smb2_downgrade_oplock,
2834 .need_neg = smb2_need_neg,
2835 .negotiate = smb2_negotiate,
2836 .negotiate_wsize = smb2_negotiate_wsize,
2837 .negotiate_rsize = smb2_negotiate_rsize,
2838 .sess_setup = SMB2_sess_setup,
2839 .logoff = SMB2_logoff,
2840 .tree_connect = SMB2_tcon,
2841 .tree_disconnect = SMB2_tdis,
2842 .qfs_tcon = smb2_qfs_tcon,
2843 .is_path_accessible = smb2_is_path_accessible,
2844 .can_echo = smb2_can_echo,
2846 .query_path_info = smb2_query_path_info,
2847 .get_srv_inum = smb2_get_srv_inum,
2848 .query_file_info = smb2_query_file_info,
2849 .set_path_size = smb2_set_path_size,
2850 .set_file_size = smb2_set_file_size,
2851 .set_file_info = smb2_set_file_info,
2852 .set_compression = smb2_set_compression,
2853 .mkdir = smb2_mkdir,
2854 .mkdir_setinfo = smb2_mkdir_setinfo,
2855 .rmdir = smb2_rmdir,
2856 .unlink = smb2_unlink,
2857 .rename = smb2_rename_path,
2858 .create_hardlink = smb2_create_hardlink,
2859 .query_symlink = smb2_query_symlink,
2860 .query_mf_symlink = smb3_query_mf_symlink,
2861 .create_mf_symlink = smb3_create_mf_symlink,
2862 .open = smb2_open_file,
2863 .set_fid = smb2_set_fid,
2864 .close = smb2_close_file,
2865 .flush = smb2_flush_file,
2866 .async_readv = smb2_async_readv,
2867 .async_writev = smb2_async_writev,
2868 .sync_read = smb2_sync_read,
2869 .sync_write = smb2_sync_write,
2870 .query_dir_first = smb2_query_dir_first,
2871 .query_dir_next = smb2_query_dir_next,
2872 .close_dir = smb2_close_dir,
2873 .calc_smb_size = smb2_calc_size,
2874 .is_status_pending = smb2_is_status_pending,
2875 .is_session_expired = smb2_is_session_expired,
2876 .oplock_response = smb2_oplock_response,
2877 .queryfs = smb2_queryfs,
2878 .mand_lock = smb2_mand_lock,
2879 .mand_unlock_range = smb2_unlock_range,
2880 .push_mand_locks = smb2_push_mandatory_locks,
2881 .get_lease_key = smb2_get_lease_key,
2882 .set_lease_key = smb2_set_lease_key,
2883 .new_lease_key = smb2_new_lease_key,
2884 .calc_signature = smb2_calc_signature,
2885 .is_read_op = smb21_is_read_op,
2886 .set_oplock_level = smb21_set_oplock_level,
2887 .create_lease_buf = smb2_create_lease_buf,
2888 .parse_lease_buf = smb2_parse_lease_buf,
2889 .copychunk_range = smb2_copychunk_range,
2890 .wp_retry_size = smb2_wp_retry_size,
2891 .dir_needs_close = smb2_dir_needs_close,
2892 .enum_snapshots = smb3_enum_snapshots,
2893 .get_dfs_refer = smb2_get_dfs_refer,
2894 .select_sectype = smb2_select_sectype,
2895 #ifdef CONFIG_CIFS_XATTR
2896 .query_all_EAs = smb2_query_eas,
2897 .set_EA = smb2_set_ea,
2898 #endif /* CIFS_XATTR */
2899 #ifdef CONFIG_CIFS_ACL
2900 .get_acl = get_smb2_acl,
2901 .get_acl_by_fid = get_smb2_acl_by_fid,
2902 .set_acl = set_smb2_acl,
2903 #endif /* CIFS_ACL */
2906 struct smb_version_operations smb30_operations = {
2907 .compare_fids = smb2_compare_fids,
2908 .setup_request = smb2_setup_request,
2909 .setup_async_request = smb2_setup_async_request,
2910 .check_receive = smb2_check_receive,
2911 .add_credits = smb2_add_credits,
2912 .set_credits = smb2_set_credits,
2913 .get_credits_field = smb2_get_credits_field,
2914 .get_credits = smb2_get_credits,
2915 .wait_mtu_credits = smb2_wait_mtu_credits,
2916 .get_next_mid = smb2_get_next_mid,
2917 .read_data_offset = smb2_read_data_offset,
2918 .read_data_length = smb2_read_data_length,
2919 .map_error = map_smb2_to_linux_error,
2920 .find_mid = smb2_find_mid,
2921 .check_message = smb2_check_message,
2922 .dump_detail = smb2_dump_detail,
2923 .clear_stats = smb2_clear_stats,
2924 .print_stats = smb2_print_stats,
2925 .dump_share_caps = smb2_dump_share_caps,
2926 .is_oplock_break = smb2_is_valid_oplock_break,
2927 .handle_cancelled_mid = smb2_handle_cancelled_mid,
2928 .downgrade_oplock = smb2_downgrade_oplock,
2929 .need_neg = smb2_need_neg,
2930 .negotiate = smb2_negotiate,
2931 .negotiate_wsize = smb2_negotiate_wsize,
2932 .negotiate_rsize = smb2_negotiate_rsize,
2933 .sess_setup = SMB2_sess_setup,
2934 .logoff = SMB2_logoff,
2935 .tree_connect = SMB2_tcon,
2936 .tree_disconnect = SMB2_tdis,
2937 .qfs_tcon = smb3_qfs_tcon,
2938 .is_path_accessible = smb2_is_path_accessible,
2939 .can_echo = smb2_can_echo,
2941 .query_path_info = smb2_query_path_info,
2942 .get_srv_inum = smb2_get_srv_inum,
2943 .query_file_info = smb2_query_file_info,
2944 .set_path_size = smb2_set_path_size,
2945 .set_file_size = smb2_set_file_size,
2946 .set_file_info = smb2_set_file_info,
2947 .set_compression = smb2_set_compression,
2948 .mkdir = smb2_mkdir,
2949 .mkdir_setinfo = smb2_mkdir_setinfo,
2950 .rmdir = smb2_rmdir,
2951 .unlink = smb2_unlink,
2952 .rename = smb2_rename_path,
2953 .create_hardlink = smb2_create_hardlink,
2954 .query_symlink = smb2_query_symlink,
2955 .query_mf_symlink = smb3_query_mf_symlink,
2956 .create_mf_symlink = smb3_create_mf_symlink,
2957 .open = smb2_open_file,
2958 .set_fid = smb2_set_fid,
2959 .close = smb2_close_file,
2960 .flush = smb2_flush_file,
2961 .async_readv = smb2_async_readv,
2962 .async_writev = smb2_async_writev,
2963 .sync_read = smb2_sync_read,
2964 .sync_write = smb2_sync_write,
2965 .query_dir_first = smb2_query_dir_first,
2966 .query_dir_next = smb2_query_dir_next,
2967 .close_dir = smb2_close_dir,
2968 .calc_smb_size = smb2_calc_size,
2969 .is_status_pending = smb2_is_status_pending,
2970 .is_session_expired = smb2_is_session_expired,
2971 .oplock_response = smb2_oplock_response,
2972 .queryfs = smb2_queryfs,
2973 .mand_lock = smb2_mand_lock,
2974 .mand_unlock_range = smb2_unlock_range,
2975 .push_mand_locks = smb2_push_mandatory_locks,
2976 .get_lease_key = smb2_get_lease_key,
2977 .set_lease_key = smb2_set_lease_key,
2978 .new_lease_key = smb2_new_lease_key,
2979 .generate_signingkey = generate_smb30signingkey,
2980 .calc_signature = smb3_calc_signature,
2981 .set_integrity = smb3_set_integrity,
2982 .is_read_op = smb21_is_read_op,
2983 .set_oplock_level = smb3_set_oplock_level,
2984 .create_lease_buf = smb3_create_lease_buf,
2985 .parse_lease_buf = smb3_parse_lease_buf,
2986 .copychunk_range = smb2_copychunk_range,
2987 .duplicate_extents = smb2_duplicate_extents,
2988 .validate_negotiate = smb3_validate_negotiate,
2989 .wp_retry_size = smb2_wp_retry_size,
2990 .dir_needs_close = smb2_dir_needs_close,
2991 .fallocate = smb3_fallocate,
2992 .enum_snapshots = smb3_enum_snapshots,
2993 .init_transform_rq = smb3_init_transform_rq,
2994 .free_transform_rq = smb3_free_transform_rq,
2995 .is_transform_hdr = smb3_is_transform_hdr,
2996 .receive_transform = smb3_receive_transform,
2997 .get_dfs_refer = smb2_get_dfs_refer,
2998 .select_sectype = smb2_select_sectype,
2999 #ifdef CONFIG_CIFS_XATTR
3000 .query_all_EAs = smb2_query_eas,
3001 .set_EA = smb2_set_ea,
3002 #endif /* CIFS_XATTR */
3003 #ifdef CONFIG_CIFS_ACL
3004 .get_acl = get_smb2_acl,
3005 .get_acl_by_fid = get_smb2_acl_by_fid,
3006 .set_acl = set_smb2_acl,
3007 #endif /* CIFS_ACL */
3010 #ifdef CONFIG_CIFS_SMB311
3011 struct smb_version_operations smb311_operations = {
3012 .compare_fids = smb2_compare_fids,
3013 .setup_request = smb2_setup_request,
3014 .setup_async_request = smb2_setup_async_request,
3015 .check_receive = smb2_check_receive,
3016 .add_credits = smb2_add_credits,
3017 .set_credits = smb2_set_credits,
3018 .get_credits_field = smb2_get_credits_field,
3019 .get_credits = smb2_get_credits,
3020 .wait_mtu_credits = smb2_wait_mtu_credits,
3021 .get_next_mid = smb2_get_next_mid,
3022 .read_data_offset = smb2_read_data_offset,
3023 .read_data_length = smb2_read_data_length,
3024 .map_error = map_smb2_to_linux_error,
3025 .find_mid = smb2_find_mid,
3026 .check_message = smb2_check_message,
3027 .dump_detail = smb2_dump_detail,
3028 .clear_stats = smb2_clear_stats,
3029 .print_stats = smb2_print_stats,
3030 .dump_share_caps = smb2_dump_share_caps,
3031 .is_oplock_break = smb2_is_valid_oplock_break,
3032 .handle_cancelled_mid = smb2_handle_cancelled_mid,
3033 .downgrade_oplock = smb2_downgrade_oplock,
3034 .need_neg = smb2_need_neg,
3035 .negotiate = smb2_negotiate,
3036 .negotiate_wsize = smb2_negotiate_wsize,
3037 .negotiate_rsize = smb2_negotiate_rsize,
3038 .sess_setup = SMB2_sess_setup,
3039 .logoff = SMB2_logoff,
3040 .tree_connect = SMB2_tcon,
3041 .tree_disconnect = SMB2_tdis,
3042 .qfs_tcon = smb3_qfs_tcon,
3043 .is_path_accessible = smb2_is_path_accessible,
3044 .can_echo = smb2_can_echo,
3046 .query_path_info = smb2_query_path_info,
3047 .get_srv_inum = smb2_get_srv_inum,
3048 .query_file_info = smb2_query_file_info,
3049 .set_path_size = smb2_set_path_size,
3050 .set_file_size = smb2_set_file_size,
3051 .set_file_info = smb2_set_file_info,
3052 .set_compression = smb2_set_compression,
3053 .mkdir = smb2_mkdir,
3054 .mkdir_setinfo = smb2_mkdir_setinfo,
3055 .rmdir = smb2_rmdir,
3056 .unlink = smb2_unlink,
3057 .rename = smb2_rename_path,
3058 .create_hardlink = smb2_create_hardlink,
3059 .query_symlink = smb2_query_symlink,
3060 .query_mf_symlink = smb3_query_mf_symlink,
3061 .create_mf_symlink = smb3_create_mf_symlink,
3062 .open = smb2_open_file,
3063 .set_fid = smb2_set_fid,
3064 .close = smb2_close_file,
3065 .flush = smb2_flush_file,
3066 .async_readv = smb2_async_readv,
3067 .async_writev = smb2_async_writev,
3068 .sync_read = smb2_sync_read,
3069 .sync_write = smb2_sync_write,
3070 .query_dir_first = smb2_query_dir_first,
3071 .query_dir_next = smb2_query_dir_next,
3072 .close_dir = smb2_close_dir,
3073 .calc_smb_size = smb2_calc_size,
3074 .is_status_pending = smb2_is_status_pending,
3075 .is_session_expired = smb2_is_session_expired,
3076 .oplock_response = smb2_oplock_response,
3077 .queryfs = smb2_queryfs,
3078 .mand_lock = smb2_mand_lock,
3079 .mand_unlock_range = smb2_unlock_range,
3080 .push_mand_locks = smb2_push_mandatory_locks,
3081 .get_lease_key = smb2_get_lease_key,
3082 .set_lease_key = smb2_set_lease_key,
3083 .new_lease_key = smb2_new_lease_key,
3084 .generate_signingkey = generate_smb311signingkey,
3085 .calc_signature = smb3_calc_signature,
3086 .set_integrity = smb3_set_integrity,
3087 .is_read_op = smb21_is_read_op,
3088 .set_oplock_level = smb3_set_oplock_level,
3089 .create_lease_buf = smb3_create_lease_buf,
3090 .parse_lease_buf = smb3_parse_lease_buf,
3091 .copychunk_range = smb2_copychunk_range,
3092 .duplicate_extents = smb2_duplicate_extents,
3093 /* .validate_negotiate = smb3_validate_negotiate, */ /* not used in 3.11 */
3094 .wp_retry_size = smb2_wp_retry_size,
3095 .dir_needs_close = smb2_dir_needs_close,
3096 .fallocate = smb3_fallocate,
3097 .enum_snapshots = smb3_enum_snapshots,
3098 .init_transform_rq = smb3_init_transform_rq,
3099 .free_transform_rq = smb3_free_transform_rq,
3100 .is_transform_hdr = smb3_is_transform_hdr,
3101 .receive_transform = smb3_receive_transform,
3102 .get_dfs_refer = smb2_get_dfs_refer,
3103 .select_sectype = smb2_select_sectype,
3104 #ifdef CONFIG_CIFS_XATTR
3105 .query_all_EAs = smb2_query_eas,
3106 .set_EA = smb2_set_ea,
3107 #endif /* CIFS_XATTR */
3109 #endif /* CIFS_SMB311 */
3111 struct smb_version_values smb20_values = {
3112 .version_string = SMB20_VERSION_STRING,
3113 .protocol_id = SMB20_PROT_ID,
3114 .req_capabilities = 0, /* MBZ */
3115 .large_lock_type = 0,
3116 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
3117 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
3118 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
3119 .header_size = sizeof(struct smb2_hdr),
3120 .header_preamble_size = 4,
3121 .max_header_size = MAX_SMB2_HDR_SIZE,
3122 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
3123 .lock_cmd = SMB2_LOCK,
3125 .cap_nt_find = SMB2_NT_FIND,
3126 .cap_large_files = SMB2_LARGE_FILES,
3127 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
3128 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
3129 .create_lease_size = sizeof(struct create_lease),
3132 struct smb_version_values smb21_values = {
3133 .version_string = SMB21_VERSION_STRING,
3134 .protocol_id = SMB21_PROT_ID,
3135 .req_capabilities = 0, /* MBZ on negotiate req until SMB3 dialect */
3136 .large_lock_type = 0,
3137 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
3138 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
3139 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
3140 .header_size = sizeof(struct smb2_hdr),
3141 .header_preamble_size = 4,
3142 .max_header_size = MAX_SMB2_HDR_SIZE,
3143 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
3144 .lock_cmd = SMB2_LOCK,
3146 .cap_nt_find = SMB2_NT_FIND,
3147 .cap_large_files = SMB2_LARGE_FILES,
3148 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
3149 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
3150 .create_lease_size = sizeof(struct create_lease),
3153 struct smb_version_values smb3any_values = {
3154 .version_string = SMB3ANY_VERSION_STRING,
3155 .protocol_id = SMB302_PROT_ID, /* doesn't matter, send protocol array */
3156 .req_capabilities = SMB2_GLOBAL_CAP_DFS | SMB2_GLOBAL_CAP_LEASING | SMB2_GLOBAL_CAP_LARGE_MTU | SMB2_GLOBAL_CAP_PERSISTENT_HANDLES | SMB2_GLOBAL_CAP_ENCRYPTION,
3157 .large_lock_type = 0,
3158 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
3159 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
3160 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
3161 .header_size = sizeof(struct smb2_hdr),
3162 .header_preamble_size = 4,
3163 .max_header_size = MAX_SMB2_HDR_SIZE,
3164 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
3165 .lock_cmd = SMB2_LOCK,
3167 .cap_nt_find = SMB2_NT_FIND,
3168 .cap_large_files = SMB2_LARGE_FILES,
3169 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
3170 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
3171 .create_lease_size = sizeof(struct create_lease_v2),
3174 struct smb_version_values smbdefault_values = {
3175 .version_string = SMBDEFAULT_VERSION_STRING,
3176 .protocol_id = SMB302_PROT_ID, /* doesn't matter, send protocol array */
3177 .req_capabilities = SMB2_GLOBAL_CAP_DFS | SMB2_GLOBAL_CAP_LEASING | SMB2_GLOBAL_CAP_LARGE_MTU | SMB2_GLOBAL_CAP_PERSISTENT_HANDLES | SMB2_GLOBAL_CAP_ENCRYPTION,
3178 .large_lock_type = 0,
3179 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
3180 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
3181 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
3182 .header_size = sizeof(struct smb2_hdr),
3183 .header_preamble_size = 4,
3184 .max_header_size = MAX_SMB2_HDR_SIZE,
3185 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
3186 .lock_cmd = SMB2_LOCK,
3188 .cap_nt_find = SMB2_NT_FIND,
3189 .cap_large_files = SMB2_LARGE_FILES,
3190 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
3191 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
3192 .create_lease_size = sizeof(struct create_lease_v2),
3195 struct smb_version_values smb30_values = {
3196 .version_string = SMB30_VERSION_STRING,
3197 .protocol_id = SMB30_PROT_ID,
3198 .req_capabilities = SMB2_GLOBAL_CAP_DFS | SMB2_GLOBAL_CAP_LEASING | SMB2_GLOBAL_CAP_LARGE_MTU | SMB2_GLOBAL_CAP_PERSISTENT_HANDLES | SMB2_GLOBAL_CAP_ENCRYPTION,
3199 .large_lock_type = 0,
3200 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
3201 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
3202 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
3203 .header_size = sizeof(struct smb2_hdr),
3204 .header_preamble_size = 4,
3205 .max_header_size = MAX_SMB2_HDR_SIZE,
3206 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
3207 .lock_cmd = SMB2_LOCK,
3209 .cap_nt_find = SMB2_NT_FIND,
3210 .cap_large_files = SMB2_LARGE_FILES,
3211 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
3212 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
3213 .create_lease_size = sizeof(struct create_lease_v2),
3216 struct smb_version_values smb302_values = {
3217 .version_string = SMB302_VERSION_STRING,
3218 .protocol_id = SMB302_PROT_ID,
3219 .req_capabilities = SMB2_GLOBAL_CAP_DFS | SMB2_GLOBAL_CAP_LEASING | SMB2_GLOBAL_CAP_LARGE_MTU | SMB2_GLOBAL_CAP_PERSISTENT_HANDLES | SMB2_GLOBAL_CAP_ENCRYPTION,
3220 .large_lock_type = 0,
3221 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
3222 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
3223 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
3224 .header_size = sizeof(struct smb2_hdr),
3225 .header_preamble_size = 4,
3226 .max_header_size = MAX_SMB2_HDR_SIZE,
3227 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
3228 .lock_cmd = SMB2_LOCK,
3230 .cap_nt_find = SMB2_NT_FIND,
3231 .cap_large_files = SMB2_LARGE_FILES,
3232 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
3233 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
3234 .create_lease_size = sizeof(struct create_lease_v2),
3237 #ifdef CONFIG_CIFS_SMB311
3238 struct smb_version_values smb311_values = {
3239 .version_string = SMB311_VERSION_STRING,
3240 .protocol_id = SMB311_PROT_ID,
3241 .req_capabilities = SMB2_GLOBAL_CAP_DFS | SMB2_GLOBAL_CAP_LEASING | SMB2_GLOBAL_CAP_LARGE_MTU | SMB2_GLOBAL_CAP_PERSISTENT_HANDLES | SMB2_GLOBAL_CAP_ENCRYPTION,
3242 .large_lock_type = 0,
3243 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
3244 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
3245 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
3246 .header_size = sizeof(struct smb2_hdr),
3247 .header_preamble_size = 4,
3248 .max_header_size = MAX_SMB2_HDR_SIZE,
3249 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
3250 .lock_cmd = SMB2_LOCK,
3252 .cap_nt_find = SMB2_NT_FIND,
3253 .cap_large_files = SMB2_LARGE_FILES,
3254 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
3255 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
3256 .create_lease_size = sizeof(struct create_lease_v2),