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"
36 /* Change credits for different ops and return the total number of credits */
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;
50 server->echoes = true;
51 server->oplocks = false;
52 server->echo_credits = 1;
55 server->echoes = true;
57 server->oplocks = true;
58 server->oplock_credits = 1;
60 server->oplocks = false;
62 server->echo_credits = 1;
64 server->credits -= server->echo_credits + server->oplock_credits;
65 return server->credits + server->echo_credits + server->oplock_credits;
69 smb2_add_credits(struct TCP_Server_Info *server, const unsigned int add,
74 spin_lock(&server->req_lock);
75 val = server->ops->get_credits_field(server, optype);
78 *val = 65000; /* Don't get near 64K credits, avoid srv bugs */
79 printk_once(KERN_WARNING "server overflowed SMB3 credits\n");
81 WARN_ON_ONCE(server->in_flight == 0);
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 if (server->tcpStatus == CifsNeedReconnect)
104 /* change_conf hasn't been executed */
107 cifs_dbg(VFS, "Possible client or server bug - zero credits\n");
110 cifs_dbg(VFS, "disabling echoes and oplocks\n");
113 cifs_dbg(FYI, "disabling oplocks\n");
116 cifs_dbg(FYI, "add %u credits total=%d\n", add, rc);
121 smb2_set_credits(struct TCP_Server_Info *server, const int val)
123 spin_lock(&server->req_lock);
124 server->credits = val;
125 spin_unlock(&server->req_lock);
129 smb2_get_credits_field(struct TCP_Server_Info *server, const int optype)
133 return &server->echo_credits;
135 return &server->oplock_credits;
137 return &server->credits;
142 smb2_get_credits(struct mid_q_entry *mid)
144 struct smb2_sync_hdr *shdr = get_sync_hdr(mid->resp_buf);
146 return le16_to_cpu(shdr->CreditRequest);
150 smb2_wait_mtu_credits(struct TCP_Server_Info *server, unsigned int size,
151 unsigned int *num, unsigned int *credits)
154 unsigned int scredits;
156 spin_lock(&server->req_lock);
158 if (server->credits <= 0) {
159 spin_unlock(&server->req_lock);
160 cifs_num_waiters_inc(server);
161 rc = wait_event_killable(server->request_q,
162 has_credits(server, &server->credits));
163 cifs_num_waiters_dec(server);
166 spin_lock(&server->req_lock);
168 if (server->tcpStatus == CifsExiting) {
169 spin_unlock(&server->req_lock);
173 scredits = server->credits;
174 /* can deadlock with reopen */
176 *num = SMB2_MAX_BUFFER_SIZE;
181 /* leave some credits for reopen and other ops */
183 *num = min_t(unsigned int, size,
184 scredits * SMB2_MAX_BUFFER_SIZE);
186 *credits = DIV_ROUND_UP(*num, SMB2_MAX_BUFFER_SIZE);
187 server->credits -= *credits;
192 spin_unlock(&server->req_lock);
197 smb2_get_next_mid(struct TCP_Server_Info *server)
200 /* for SMB2 we need the current value */
201 spin_lock(&GlobalMid_Lock);
202 mid = server->CurrentMid++;
203 spin_unlock(&GlobalMid_Lock);
207 static struct mid_q_entry *
208 smb2_find_mid(struct TCP_Server_Info *server, char *buf)
210 struct mid_q_entry *mid;
211 struct smb2_sync_hdr *shdr = get_sync_hdr(buf);
212 __u64 wire_mid = le64_to_cpu(shdr->MessageId);
214 if (shdr->ProtocolId == SMB2_TRANSFORM_PROTO_NUM) {
215 cifs_dbg(VFS, "encrypted frame parsing not supported yet");
219 spin_lock(&GlobalMid_Lock);
220 list_for_each_entry(mid, &server->pending_mid_q, qhead) {
221 if ((mid->mid == wire_mid) &&
222 (mid->mid_state == MID_REQUEST_SUBMITTED) &&
223 (mid->command == shdr->Command)) {
224 kref_get(&mid->refcount);
225 spin_unlock(&GlobalMid_Lock);
229 spin_unlock(&GlobalMid_Lock);
234 smb2_dump_detail(void *buf)
236 #ifdef CONFIG_CIFS_DEBUG2
237 struct smb2_sync_hdr *shdr = get_sync_hdr(buf);
239 cifs_dbg(VFS, "Cmd: %d Err: 0x%x Flags: 0x%x Mid: %llu Pid: %d\n",
240 shdr->Command, shdr->Status, shdr->Flags, shdr->MessageId,
242 cifs_dbg(VFS, "smb buf %p len %u\n", buf, smb2_calc_size(buf));
247 smb2_need_neg(struct TCP_Server_Info *server)
249 return server->max_read == 0;
253 smb2_negotiate(const unsigned int xid, struct cifs_ses *ses)
256 ses->server->CurrentMid = 0;
257 rc = SMB2_negotiate(xid, ses);
258 /* BB we probably don't need to retry with modern servers */
265 smb2_negotiate_wsize(struct cifs_tcon *tcon, struct smb_vol *volume_info)
267 struct TCP_Server_Info *server = tcon->ses->server;
270 /* start with specified wsize, or default */
271 wsize = volume_info->wsize ? volume_info->wsize : CIFS_DEFAULT_IOSIZE;
272 wsize = min_t(unsigned int, wsize, server->max_write);
274 if (!(server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU))
275 wsize = min_t(unsigned int, wsize, SMB2_MAX_BUFFER_SIZE);
281 smb2_negotiate_rsize(struct cifs_tcon *tcon, struct smb_vol *volume_info)
283 struct TCP_Server_Info *server = tcon->ses->server;
286 /* start with specified rsize, or default */
287 rsize = volume_info->rsize ? volume_info->rsize : CIFS_DEFAULT_IOSIZE;
288 rsize = min_t(unsigned int, rsize, server->max_read);
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 */,
307 NULL /* no data input */, 0 /* no data input */,
308 (char **)&out_buf, &ret_data_len);
310 cifs_dbg(VFS, "error %d on ioctl to get interface list\n", rc);
311 else if (ret_data_len < sizeof(struct network_interface_info_ioctl_rsp)) {
312 cifs_dbg(VFS, "server returned bad net interface info buf\n");
315 /* Dump info on first interface */
316 cifs_dbg(FYI, "Adapter Capability 0x%x\t",
317 le32_to_cpu(out_buf->Capability));
318 cifs_dbg(FYI, "Link Speed %lld\n",
319 le64_to_cpu(out_buf->LinkSpeed));
327 smb3_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon)
330 __le16 srch_path = 0; /* Null - open root of share */
331 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
332 struct cifs_open_parms oparms;
336 oparms.desired_access = FILE_READ_ATTRIBUTES;
337 oparms.disposition = FILE_OPEN;
338 oparms.create_options = 0;
340 oparms.reconnect = false;
342 rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL);
346 #ifdef CONFIG_CIFS_STATS2
347 SMB3_request_interfaces(xid, tcon);
350 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
351 FS_ATTRIBUTE_INFORMATION);
352 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
353 FS_DEVICE_INFORMATION);
354 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
355 FS_VOLUME_INFORMATION);
356 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
357 FS_SECTOR_SIZE_INFORMATION); /* SMB3 specific */
358 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
363 smb2_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon)
366 __le16 srch_path = 0; /* Null - open root of share */
367 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
368 struct cifs_open_parms oparms;
372 oparms.desired_access = FILE_READ_ATTRIBUTES;
373 oparms.disposition = FILE_OPEN;
374 oparms.create_options = 0;
376 oparms.reconnect = false;
378 rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL);
382 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
383 FS_ATTRIBUTE_INFORMATION);
384 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
385 FS_DEVICE_INFORMATION);
386 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
391 smb2_is_path_accessible(const unsigned int xid, struct cifs_tcon *tcon,
392 struct cifs_sb_info *cifs_sb, const char *full_path)
396 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
397 struct cifs_open_parms oparms;
400 utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb);
405 oparms.desired_access = FILE_READ_ATTRIBUTES;
406 oparms.disposition = FILE_OPEN;
407 if (backup_cred(cifs_sb))
408 oparms.create_options = CREATE_OPEN_BACKUP_INTENT;
410 oparms.create_options = 0;
412 oparms.reconnect = false;
414 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL);
420 rc = SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
426 smb2_get_srv_inum(const unsigned int xid, struct cifs_tcon *tcon,
427 struct cifs_sb_info *cifs_sb, const char *full_path,
428 u64 *uniqueid, FILE_ALL_INFO *data)
430 *uniqueid = le64_to_cpu(data->IndexNumber);
435 smb2_query_file_info(const unsigned int xid, struct cifs_tcon *tcon,
436 struct cifs_fid *fid, FILE_ALL_INFO *data)
439 struct smb2_file_all_info *smb2_data;
441 smb2_data = kzalloc(sizeof(struct smb2_file_all_info) + PATH_MAX * 2,
443 if (smb2_data == NULL)
446 rc = SMB2_query_info(xid, tcon, fid->persistent_fid, fid->volatile_fid,
449 move_smb2_info_to_cifs(data, smb2_data);
454 #ifdef CONFIG_CIFS_XATTR
456 move_smb2_ea_to_cifs(char *dst, size_t dst_size,
457 struct smb2_file_full_ea_info *src, size_t src_size,
458 const unsigned char *ea_name)
461 unsigned int ea_name_len = ea_name ? strlen(ea_name) : 0;
463 size_t buf_size = dst_size;
464 size_t name_len, value_len, user_name_len;
466 while (src_size > 0) {
467 name_len = (size_t)src->ea_name_length;
468 value_len = (size_t)le16_to_cpu(src->ea_value_length);
474 if (src_size < 8 + name_len + 1 + value_len) {
475 cifs_dbg(FYI, "EA entry goes beyond length of list\n");
480 name = &src->ea_data[0];
481 value = &src->ea_data[src->ea_name_length + 1];
484 if (ea_name_len == name_len &&
485 memcmp(ea_name, name, name_len) == 0) {
489 if (dst_size < value_len) {
493 memcpy(dst, value, value_len);
497 /* 'user.' plus a terminating null */
498 user_name_len = 5 + 1 + name_len;
501 /* skip copy - calc size only */
503 } else if (dst_size >= user_name_len) {
504 dst_size -= user_name_len;
505 memcpy(dst, "user.", 5);
507 memcpy(dst, src->ea_data, name_len);
513 /* stop before overrun buffer */
519 if (!src->next_entry_offset)
522 if (src_size < le32_to_cpu(src->next_entry_offset)) {
523 /* stop before overrun buffer */
527 src_size -= le32_to_cpu(src->next_entry_offset);
528 src = (void *)((char *)src +
529 le32_to_cpu(src->next_entry_offset));
532 /* didn't find the named attribute */
541 smb2_query_eas(const unsigned int xid, struct cifs_tcon *tcon,
542 const unsigned char *path, const unsigned char *ea_name,
543 char *ea_data, size_t buf_size,
544 struct cifs_sb_info *cifs_sb)
548 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
549 struct cifs_open_parms oparms;
551 struct smb2_file_full_ea_info *smb2_data;
552 int ea_buf_size = SMB2_MIN_EA_BUF;
554 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
559 oparms.desired_access = FILE_READ_EA;
560 oparms.disposition = FILE_OPEN;
561 if (backup_cred(cifs_sb))
562 oparms.create_options = CREATE_OPEN_BACKUP_INTENT;
564 oparms.create_options = 0;
566 oparms.reconnect = false;
568 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL);
571 cifs_dbg(FYI, "open failed rc=%d\n", rc);
576 smb2_data = kzalloc(ea_buf_size, GFP_KERNEL);
577 if (smb2_data == NULL) {
578 SMB2_close(xid, tcon, fid.persistent_fid,
583 rc = SMB2_query_eas(xid, tcon, fid.persistent_fid,
585 ea_buf_size, smb2_data);
593 if (ea_buf_size > SMB2_MAX_EA_BUF) {
594 cifs_dbg(VFS, "EA size is too large\n");
595 SMB2_close(xid, tcon, fid.persistent_fid,
601 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
604 * If ea_name is NULL (listxattr) and there are no EAs, return 0 as it's
605 * not an error. Otherwise, the specified ea_name was not found.
608 rc = move_smb2_ea_to_cifs(ea_data, buf_size, smb2_data,
609 SMB2_MAX_EA_BUF, ea_name);
610 else if (!ea_name && rc == -ENODATA)
619 smb2_set_ea(const unsigned int xid, struct cifs_tcon *tcon,
620 const char *path, const char *ea_name, const void *ea_value,
621 const __u16 ea_value_len, const struct nls_table *nls_codepage,
622 struct cifs_sb_info *cifs_sb)
626 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
627 struct cifs_open_parms oparms;
629 struct smb2_file_full_ea_info *ea;
630 int ea_name_len = strlen(ea_name);
633 if (ea_name_len > 255)
636 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
641 oparms.desired_access = FILE_WRITE_EA;
642 oparms.disposition = FILE_OPEN;
643 if (backup_cred(cifs_sb))
644 oparms.create_options = CREATE_OPEN_BACKUP_INTENT;
646 oparms.create_options = 0;
648 oparms.reconnect = false;
650 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL);
653 cifs_dbg(FYI, "open failed rc=%d\n", rc);
657 len = sizeof(*ea) + ea_name_len + ea_value_len + 1;
658 ea = kzalloc(len, GFP_KERNEL);
660 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
664 ea->ea_name_length = ea_name_len;
665 ea->ea_value_length = cpu_to_le16(ea_value_len);
666 memcpy(ea->ea_data, ea_name, ea_name_len + 1);
667 memcpy(ea->ea_data + ea_name_len + 1, ea_value, ea_value_len);
669 rc = SMB2_set_ea(xid, tcon, fid.persistent_fid, fid.volatile_fid, ea,
673 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
680 smb2_can_echo(struct TCP_Server_Info *server)
682 return server->echoes;
686 smb2_clear_stats(struct cifs_tcon *tcon)
688 #ifdef CONFIG_CIFS_STATS
690 for (i = 0; i < NUMBER_OF_SMB2_COMMANDS; i++) {
691 atomic_set(&tcon->stats.smb2_stats.smb2_com_sent[i], 0);
692 atomic_set(&tcon->stats.smb2_stats.smb2_com_failed[i], 0);
698 smb2_dump_share_caps(struct seq_file *m, struct cifs_tcon *tcon)
700 seq_puts(m, "\n\tShare Capabilities:");
701 if (tcon->capabilities & SMB2_SHARE_CAP_DFS)
702 seq_puts(m, " DFS,");
703 if (tcon->capabilities & SMB2_SHARE_CAP_CONTINUOUS_AVAILABILITY)
704 seq_puts(m, " CONTINUOUS AVAILABILITY,");
705 if (tcon->capabilities & SMB2_SHARE_CAP_SCALEOUT)
706 seq_puts(m, " SCALEOUT,");
707 if (tcon->capabilities & SMB2_SHARE_CAP_CLUSTER)
708 seq_puts(m, " CLUSTER,");
709 if (tcon->capabilities & SMB2_SHARE_CAP_ASYMMETRIC)
710 seq_puts(m, " ASYMMETRIC,");
711 if (tcon->capabilities == 0)
712 seq_puts(m, " None");
713 if (tcon->ss_flags & SSINFO_FLAGS_ALIGNED_DEVICE)
714 seq_puts(m, " Aligned,");
715 if (tcon->ss_flags & SSINFO_FLAGS_PARTITION_ALIGNED_ON_DEVICE)
716 seq_puts(m, " Partition Aligned,");
717 if (tcon->ss_flags & SSINFO_FLAGS_NO_SEEK_PENALTY)
718 seq_puts(m, " SSD,");
719 if (tcon->ss_flags & SSINFO_FLAGS_TRIM_ENABLED)
720 seq_puts(m, " TRIM-support,");
722 seq_printf(m, "\tShare Flags: 0x%x", tcon->share_flags);
723 if (tcon->perf_sector_size)
724 seq_printf(m, "\tOptimal sector size: 0x%x",
725 tcon->perf_sector_size);
729 smb2_print_stats(struct seq_file *m, struct cifs_tcon *tcon)
731 #ifdef CONFIG_CIFS_STATS
732 atomic_t *sent = tcon->stats.smb2_stats.smb2_com_sent;
733 atomic_t *failed = tcon->stats.smb2_stats.smb2_com_failed;
734 seq_printf(m, "\nNegotiates: %d sent %d failed",
735 atomic_read(&sent[SMB2_NEGOTIATE_HE]),
736 atomic_read(&failed[SMB2_NEGOTIATE_HE]));
737 seq_printf(m, "\nSessionSetups: %d sent %d failed",
738 atomic_read(&sent[SMB2_SESSION_SETUP_HE]),
739 atomic_read(&failed[SMB2_SESSION_SETUP_HE]));
740 seq_printf(m, "\nLogoffs: %d sent %d failed",
741 atomic_read(&sent[SMB2_LOGOFF_HE]),
742 atomic_read(&failed[SMB2_LOGOFF_HE]));
743 seq_printf(m, "\nTreeConnects: %d sent %d failed",
744 atomic_read(&sent[SMB2_TREE_CONNECT_HE]),
745 atomic_read(&failed[SMB2_TREE_CONNECT_HE]));
746 seq_printf(m, "\nTreeDisconnects: %d sent %d failed",
747 atomic_read(&sent[SMB2_TREE_DISCONNECT_HE]),
748 atomic_read(&failed[SMB2_TREE_DISCONNECT_HE]));
749 seq_printf(m, "\nCreates: %d sent %d failed",
750 atomic_read(&sent[SMB2_CREATE_HE]),
751 atomic_read(&failed[SMB2_CREATE_HE]));
752 seq_printf(m, "\nCloses: %d sent %d failed",
753 atomic_read(&sent[SMB2_CLOSE_HE]),
754 atomic_read(&failed[SMB2_CLOSE_HE]));
755 seq_printf(m, "\nFlushes: %d sent %d failed",
756 atomic_read(&sent[SMB2_FLUSH_HE]),
757 atomic_read(&failed[SMB2_FLUSH_HE]));
758 seq_printf(m, "\nReads: %d sent %d failed",
759 atomic_read(&sent[SMB2_READ_HE]),
760 atomic_read(&failed[SMB2_READ_HE]));
761 seq_printf(m, "\nWrites: %d sent %d failed",
762 atomic_read(&sent[SMB2_WRITE_HE]),
763 atomic_read(&failed[SMB2_WRITE_HE]));
764 seq_printf(m, "\nLocks: %d sent %d failed",
765 atomic_read(&sent[SMB2_LOCK_HE]),
766 atomic_read(&failed[SMB2_LOCK_HE]));
767 seq_printf(m, "\nIOCTLs: %d sent %d failed",
768 atomic_read(&sent[SMB2_IOCTL_HE]),
769 atomic_read(&failed[SMB2_IOCTL_HE]));
770 seq_printf(m, "\nCancels: %d sent %d failed",
771 atomic_read(&sent[SMB2_CANCEL_HE]),
772 atomic_read(&failed[SMB2_CANCEL_HE]));
773 seq_printf(m, "\nEchos: %d sent %d failed",
774 atomic_read(&sent[SMB2_ECHO_HE]),
775 atomic_read(&failed[SMB2_ECHO_HE]));
776 seq_printf(m, "\nQueryDirectories: %d sent %d failed",
777 atomic_read(&sent[SMB2_QUERY_DIRECTORY_HE]),
778 atomic_read(&failed[SMB2_QUERY_DIRECTORY_HE]));
779 seq_printf(m, "\nChangeNotifies: %d sent %d failed",
780 atomic_read(&sent[SMB2_CHANGE_NOTIFY_HE]),
781 atomic_read(&failed[SMB2_CHANGE_NOTIFY_HE]));
782 seq_printf(m, "\nQueryInfos: %d sent %d failed",
783 atomic_read(&sent[SMB2_QUERY_INFO_HE]),
784 atomic_read(&failed[SMB2_QUERY_INFO_HE]));
785 seq_printf(m, "\nSetInfos: %d sent %d failed",
786 atomic_read(&sent[SMB2_SET_INFO_HE]),
787 atomic_read(&failed[SMB2_SET_INFO_HE]));
788 seq_printf(m, "\nOplockBreaks: %d sent %d failed",
789 atomic_read(&sent[SMB2_OPLOCK_BREAK_HE]),
790 atomic_read(&failed[SMB2_OPLOCK_BREAK_HE]));
795 smb2_set_fid(struct cifsFileInfo *cfile, struct cifs_fid *fid, __u32 oplock)
797 struct cifsInodeInfo *cinode = CIFS_I(d_inode(cfile->dentry));
798 struct TCP_Server_Info *server = tlink_tcon(cfile->tlink)->ses->server;
800 cfile->fid.persistent_fid = fid->persistent_fid;
801 cfile->fid.volatile_fid = fid->volatile_fid;
802 server->ops->set_oplock_level(cinode, oplock, fid->epoch,
804 cinode->can_cache_brlcks = CIFS_CACHE_WRITE(cinode);
805 memcpy(cfile->fid.create_guid, fid->create_guid, 16);
809 smb2_close_file(const unsigned int xid, struct cifs_tcon *tcon,
810 struct cifs_fid *fid)
812 SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
816 SMB2_request_res_key(const unsigned int xid, struct cifs_tcon *tcon,
817 u64 persistent_fid, u64 volatile_fid,
818 struct copychunk_ioctl *pcchunk)
821 unsigned int ret_data_len;
822 struct resume_key_req *res_key;
824 rc = SMB2_ioctl(xid, tcon, persistent_fid, volatile_fid,
825 FSCTL_SRV_REQUEST_RESUME_KEY, true /* is_fsctl */,
827 NULL, 0 /* no input */,
828 (char **)&res_key, &ret_data_len);
831 cifs_dbg(VFS, "refcpy ioctl error %d getting resume key\n", rc);
832 goto req_res_key_exit;
834 if (ret_data_len < sizeof(struct resume_key_req)) {
835 cifs_dbg(VFS, "Invalid refcopy resume key length\n");
837 goto req_res_key_exit;
839 memcpy(pcchunk->SourceKey, res_key->ResumeKey, COPY_CHUNK_RES_KEY_SIZE);
847 smb2_copychunk_range(const unsigned int xid,
848 struct cifsFileInfo *srcfile,
849 struct cifsFileInfo *trgtfile, u64 src_off,
850 u64 len, u64 dest_off)
853 unsigned int ret_data_len;
854 struct copychunk_ioctl *pcchunk;
855 struct copychunk_ioctl_rsp *retbuf = NULL;
856 struct cifs_tcon *tcon;
857 int chunks_copied = 0;
858 bool chunk_sizes_updated = false;
859 ssize_t bytes_written, total_bytes_written = 0;
862 pcchunk = kmalloc(sizeof(struct copychunk_ioctl), GFP_KERNEL);
865 * We need to flush all unwritten data before we can send the
866 * copychunk ioctl to the server.
868 inode = d_inode(trgtfile->dentry);
869 filemap_write_and_wait(inode->i_mapping);
874 cifs_dbg(FYI, "in smb2_copychunk_range - about to call request res key\n");
875 /* Request a key from the server to identify the source of the copy */
876 rc = SMB2_request_res_key(xid, tlink_tcon(srcfile->tlink),
877 srcfile->fid.persistent_fid,
878 srcfile->fid.volatile_fid, pcchunk);
880 /* Note: request_res_key sets res_key null only if rc !=0 */
884 /* For now array only one chunk long, will make more flexible later */
885 pcchunk->ChunkCount = cpu_to_le32(1);
886 pcchunk->Reserved = 0;
887 pcchunk->Reserved2 = 0;
889 tcon = tlink_tcon(trgtfile->tlink);
892 pcchunk->SourceOffset = cpu_to_le64(src_off);
893 pcchunk->TargetOffset = cpu_to_le64(dest_off);
895 cpu_to_le32(min_t(u64, len, tcon->max_bytes_chunk));
897 /* Request server copy to target from src identified by key */
900 rc = SMB2_ioctl(xid, tcon, trgtfile->fid.persistent_fid,
901 trgtfile->fid.volatile_fid, FSCTL_SRV_COPYCHUNK_WRITE,
902 true /* is_fsctl */, false /* use_ipc */,
904 sizeof(struct copychunk_ioctl), (char **)&retbuf,
908 sizeof(struct copychunk_ioctl_rsp)) {
909 cifs_dbg(VFS, "invalid cchunk response size\n");
913 if (retbuf->TotalBytesWritten == 0) {
914 cifs_dbg(FYI, "no bytes copied\n");
919 * Check if server claimed to write more than we asked
921 if (le32_to_cpu(retbuf->TotalBytesWritten) >
922 le32_to_cpu(pcchunk->Length)) {
923 cifs_dbg(VFS, "invalid copy chunk response\n");
927 if (le32_to_cpu(retbuf->ChunksWritten) != 1) {
928 cifs_dbg(VFS, "invalid num chunks written\n");
934 bytes_written = le32_to_cpu(retbuf->TotalBytesWritten);
935 src_off += bytes_written;
936 dest_off += bytes_written;
937 len -= bytes_written;
938 total_bytes_written += bytes_written;
940 cifs_dbg(FYI, "Chunks %d PartialChunk %d Total %zu\n",
941 le32_to_cpu(retbuf->ChunksWritten),
942 le32_to_cpu(retbuf->ChunkBytesWritten),
944 } else if (rc == -EINVAL) {
945 if (ret_data_len != sizeof(struct copychunk_ioctl_rsp))
948 cifs_dbg(FYI, "MaxChunks %d BytesChunk %d MaxCopy %d\n",
949 le32_to_cpu(retbuf->ChunksWritten),
950 le32_to_cpu(retbuf->ChunkBytesWritten),
951 le32_to_cpu(retbuf->TotalBytesWritten));
954 * Check if this is the first request using these sizes,
955 * (ie check if copy succeed once with original sizes
956 * and check if the server gave us different sizes after
957 * we already updated max sizes on previous request).
958 * if not then why is the server returning an error now
960 if ((chunks_copied != 0) || chunk_sizes_updated)
963 /* Check that server is not asking us to grow size */
964 if (le32_to_cpu(retbuf->ChunkBytesWritten) <
965 tcon->max_bytes_chunk)
966 tcon->max_bytes_chunk =
967 le32_to_cpu(retbuf->ChunkBytesWritten);
969 goto cchunk_out; /* server gave us bogus size */
971 /* No need to change MaxChunks since already set to 1 */
972 chunk_sizes_updated = true;
983 return total_bytes_written;
987 smb2_flush_file(const unsigned int xid, struct cifs_tcon *tcon,
988 struct cifs_fid *fid)
990 return SMB2_flush(xid, tcon, fid->persistent_fid, fid->volatile_fid);
994 smb2_read_data_offset(char *buf)
996 struct smb2_read_rsp *rsp = (struct smb2_read_rsp *)buf;
997 return rsp->DataOffset;
1001 smb2_read_data_length(char *buf)
1003 struct smb2_read_rsp *rsp = (struct smb2_read_rsp *)buf;
1004 return le32_to_cpu(rsp->DataLength);
1009 smb2_sync_read(const unsigned int xid, struct cifs_fid *pfid,
1010 struct cifs_io_parms *parms, unsigned int *bytes_read,
1011 char **buf, int *buf_type)
1013 parms->persistent_fid = pfid->persistent_fid;
1014 parms->volatile_fid = pfid->volatile_fid;
1015 return SMB2_read(xid, parms, bytes_read, buf, buf_type);
1019 smb2_sync_write(const unsigned int xid, struct cifs_fid *pfid,
1020 struct cifs_io_parms *parms, unsigned int *written,
1021 struct kvec *iov, unsigned long nr_segs)
1024 parms->persistent_fid = pfid->persistent_fid;
1025 parms->volatile_fid = pfid->volatile_fid;
1026 return SMB2_write(xid, parms, written, iov, nr_segs);
1029 /* Set or clear the SPARSE_FILE attribute based on value passed in setsparse */
1030 static bool smb2_set_sparse(const unsigned int xid, struct cifs_tcon *tcon,
1031 struct cifsFileInfo *cfile, struct inode *inode, __u8 setsparse)
1033 struct cifsInodeInfo *cifsi;
1036 cifsi = CIFS_I(inode);
1038 /* if file already sparse don't bother setting sparse again */
1039 if ((cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) && setsparse)
1040 return true; /* already sparse */
1042 if (!(cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) && !setsparse)
1043 return true; /* already not sparse */
1046 * Can't check for sparse support on share the usual way via the
1047 * FS attribute info (FILE_SUPPORTS_SPARSE_FILES) on the share
1048 * since Samba server doesn't set the flag on the share, yet
1049 * supports the set sparse FSCTL and returns sparse correctly
1050 * in the file attributes. If we fail setting sparse though we
1051 * mark that server does not support sparse files for this share
1052 * to avoid repeatedly sending the unsupported fsctl to server
1053 * if the file is repeatedly extended.
1055 if (tcon->broken_sparse_sup)
1058 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
1059 cfile->fid.volatile_fid, FSCTL_SET_SPARSE,
1060 true /* is_fctl */, false /* use_ipc */,
1061 &setsparse, 1, NULL, NULL);
1063 tcon->broken_sparse_sup = true;
1064 cifs_dbg(FYI, "set sparse rc = %d\n", rc);
1069 cifsi->cifsAttrs |= FILE_ATTRIBUTE_SPARSE_FILE;
1071 cifsi->cifsAttrs &= (~FILE_ATTRIBUTE_SPARSE_FILE);
1077 smb2_set_file_size(const unsigned int xid, struct cifs_tcon *tcon,
1078 struct cifsFileInfo *cfile, __u64 size, bool set_alloc)
1080 __le64 eof = cpu_to_le64(size);
1081 struct inode *inode;
1084 * If extending file more than one page make sparse. Many Linux fs
1085 * make files sparse by default when extending via ftruncate
1087 inode = d_inode(cfile->dentry);
1089 if (!set_alloc && (size > inode->i_size + 8192)) {
1090 __u8 set_sparse = 1;
1092 /* whether set sparse succeeds or not, extend the file */
1093 smb2_set_sparse(xid, tcon, cfile, inode, set_sparse);
1096 return SMB2_set_eof(xid, tcon, cfile->fid.persistent_fid,
1097 cfile->fid.volatile_fid, cfile->pid, &eof, false);
1101 smb2_duplicate_extents(const unsigned int xid,
1102 struct cifsFileInfo *srcfile,
1103 struct cifsFileInfo *trgtfile, u64 src_off,
1104 u64 len, u64 dest_off)
1107 unsigned int ret_data_len;
1108 struct duplicate_extents_to_file dup_ext_buf;
1109 struct cifs_tcon *tcon = tlink_tcon(trgtfile->tlink);
1111 /* server fileays advertise duplicate extent support with this flag */
1112 if ((le32_to_cpu(tcon->fsAttrInfo.Attributes) &
1113 FILE_SUPPORTS_BLOCK_REFCOUNTING) == 0)
1116 dup_ext_buf.VolatileFileHandle = srcfile->fid.volatile_fid;
1117 dup_ext_buf.PersistentFileHandle = srcfile->fid.persistent_fid;
1118 dup_ext_buf.SourceFileOffset = cpu_to_le64(src_off);
1119 dup_ext_buf.TargetFileOffset = cpu_to_le64(dest_off);
1120 dup_ext_buf.ByteCount = cpu_to_le64(len);
1121 cifs_dbg(FYI, "duplicate extents: src off %lld dst off %lld len %lld",
1122 src_off, dest_off, len);
1124 rc = smb2_set_file_size(xid, tcon, trgtfile, dest_off + len, false);
1126 goto duplicate_extents_out;
1128 rc = SMB2_ioctl(xid, tcon, trgtfile->fid.persistent_fid,
1129 trgtfile->fid.volatile_fid,
1130 FSCTL_DUPLICATE_EXTENTS_TO_FILE,
1131 true /* is_fsctl */, false /* use_ipc */,
1132 (char *)&dup_ext_buf,
1133 sizeof(struct duplicate_extents_to_file),
1137 if (ret_data_len > 0)
1138 cifs_dbg(FYI, "non-zero response length in duplicate extents");
1140 duplicate_extents_out:
1145 smb2_set_compression(const unsigned int xid, struct cifs_tcon *tcon,
1146 struct cifsFileInfo *cfile)
1148 return SMB2_set_compression(xid, tcon, cfile->fid.persistent_fid,
1149 cfile->fid.volatile_fid);
1153 smb3_set_integrity(const unsigned int xid, struct cifs_tcon *tcon,
1154 struct cifsFileInfo *cfile)
1156 struct fsctl_set_integrity_information_req integr_info;
1157 unsigned int ret_data_len;
1159 integr_info.ChecksumAlgorithm = cpu_to_le16(CHECKSUM_TYPE_UNCHANGED);
1160 integr_info.Flags = 0;
1161 integr_info.Reserved = 0;
1163 return SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
1164 cfile->fid.volatile_fid,
1165 FSCTL_SET_INTEGRITY_INFORMATION,
1166 true /* is_fsctl */, false /* use_ipc */,
1167 (char *)&integr_info,
1168 sizeof(struct fsctl_set_integrity_information_req),
1174 /* GMT Token is @GMT-YYYY.MM.DD-HH.MM.SS Unicode which is 48 bytes + null */
1175 #define GMT_TOKEN_SIZE 50
1178 * Input buffer contains (empty) struct smb_snapshot array with size filled in
1179 * For output see struct SRV_SNAPSHOT_ARRAY in MS-SMB2 section 2.2.32.2
1182 smb3_enum_snapshots(const unsigned int xid, struct cifs_tcon *tcon,
1183 struct cifsFileInfo *cfile, void __user *ioc_buf)
1185 char *retbuf = NULL;
1186 unsigned int ret_data_len = 0;
1188 struct smb_snapshot_array snapshot_in;
1190 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
1191 cfile->fid.volatile_fid,
1192 FSCTL_SRV_ENUMERATE_SNAPSHOTS,
1193 true /* is_fsctl */, false /* use_ipc */,
1194 NULL, 0 /* no input data */,
1197 cifs_dbg(FYI, "enum snaphots ioctl returned %d and ret buflen is %d\n",
1202 if (ret_data_len && (ioc_buf != NULL) && (retbuf != NULL)) {
1204 if (copy_from_user(&snapshot_in, ioc_buf,
1205 sizeof(struct smb_snapshot_array))) {
1212 * Check for min size, ie not large enough to fit even one GMT
1213 * token (snapshot). On the first ioctl some users may pass in
1214 * smaller size (or zero) to simply get the size of the array
1215 * so the user space caller can allocate sufficient memory
1216 * and retry the ioctl again with larger array size sufficient
1217 * to hold all of the snapshot GMT tokens on the second try.
1219 if (snapshot_in.snapshot_array_size < GMT_TOKEN_SIZE)
1220 ret_data_len = sizeof(struct smb_snapshot_array);
1223 * We return struct SRV_SNAPSHOT_ARRAY, followed by
1224 * the snapshot array (of 50 byte GMT tokens) each
1225 * representing an available previous version of the data
1227 if (ret_data_len > (snapshot_in.snapshot_array_size +
1228 sizeof(struct smb_snapshot_array)))
1229 ret_data_len = snapshot_in.snapshot_array_size +
1230 sizeof(struct smb_snapshot_array);
1232 if (copy_to_user(ioc_buf, retbuf, ret_data_len))
1241 smb2_query_dir_first(const unsigned int xid, struct cifs_tcon *tcon,
1242 const char *path, struct cifs_sb_info *cifs_sb,
1243 struct cifs_fid *fid, __u16 search_flags,
1244 struct cifs_search_info *srch_inf)
1248 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
1249 struct cifs_open_parms oparms;
1251 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
1256 oparms.desired_access = FILE_READ_ATTRIBUTES | FILE_READ_DATA;
1257 oparms.disposition = FILE_OPEN;
1258 if (backup_cred(cifs_sb))
1259 oparms.create_options = CREATE_OPEN_BACKUP_INTENT;
1261 oparms.create_options = 0;
1263 oparms.reconnect = false;
1265 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL);
1268 cifs_dbg(FYI, "open dir failed rc=%d\n", rc);
1272 srch_inf->entries_in_buffer = 0;
1273 srch_inf->index_of_last_entry = 2;
1275 rc = SMB2_query_directory(xid, tcon, fid->persistent_fid,
1276 fid->volatile_fid, 0, srch_inf);
1278 cifs_dbg(FYI, "query directory failed rc=%d\n", rc);
1279 SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
1285 smb2_query_dir_next(const unsigned int xid, struct cifs_tcon *tcon,
1286 struct cifs_fid *fid, __u16 search_flags,
1287 struct cifs_search_info *srch_inf)
1289 return SMB2_query_directory(xid, tcon, fid->persistent_fid,
1290 fid->volatile_fid, 0, srch_inf);
1294 smb2_close_dir(const unsigned int xid, struct cifs_tcon *tcon,
1295 struct cifs_fid *fid)
1297 return SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
1301 * If we negotiate SMB2 protocol and get STATUS_PENDING - update
1302 * the number of credits and return true. Otherwise - return false.
1305 smb2_is_status_pending(char *buf, struct TCP_Server_Info *server, int length)
1307 struct smb2_sync_hdr *shdr = get_sync_hdr(buf);
1309 if (shdr->Status != STATUS_PENDING)
1313 spin_lock(&server->req_lock);
1314 server->credits += le16_to_cpu(shdr->CreditRequest);
1315 spin_unlock(&server->req_lock);
1316 wake_up(&server->request_q);
1323 smb2_is_session_expired(char *buf)
1325 struct smb2_sync_hdr *shdr = get_sync_hdr(buf);
1327 if (shdr->Status != STATUS_NETWORK_SESSION_EXPIRED &&
1328 shdr->Status != STATUS_USER_SESSION_DELETED)
1331 cifs_dbg(FYI, "Session expired or deleted\n");
1336 smb2_oplock_response(struct cifs_tcon *tcon, struct cifs_fid *fid,
1337 struct cifsInodeInfo *cinode)
1339 if (tcon->ses->server->capabilities & SMB2_GLOBAL_CAP_LEASING)
1340 return SMB2_lease_break(0, tcon, cinode->lease_key,
1341 smb2_get_lease_state(cinode));
1343 return SMB2_oplock_break(0, tcon, fid->persistent_fid,
1345 CIFS_CACHE_READ(cinode) ? 1 : 0);
1349 smb2_queryfs(const unsigned int xid, struct cifs_tcon *tcon,
1350 struct kstatfs *buf)
1353 __le16 srch_path = 0; /* Null - open root of share */
1354 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
1355 struct cifs_open_parms oparms;
1356 struct cifs_fid fid;
1359 oparms.desired_access = FILE_READ_ATTRIBUTES;
1360 oparms.disposition = FILE_OPEN;
1361 oparms.create_options = 0;
1363 oparms.reconnect = false;
1365 rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL);
1368 buf->f_type = SMB2_MAGIC_NUMBER;
1369 rc = SMB2_QFS_info(xid, tcon, fid.persistent_fid, fid.volatile_fid,
1371 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
1376 smb2_compare_fids(struct cifsFileInfo *ob1, struct cifsFileInfo *ob2)
1378 return ob1->fid.persistent_fid == ob2->fid.persistent_fid &&
1379 ob1->fid.volatile_fid == ob2->fid.volatile_fid;
1383 smb2_mand_lock(const unsigned int xid, struct cifsFileInfo *cfile, __u64 offset,
1384 __u64 length, __u32 type, int lock, int unlock, bool wait)
1386 if (unlock && !lock)
1387 type = SMB2_LOCKFLAG_UNLOCK;
1388 return SMB2_lock(xid, tlink_tcon(cfile->tlink),
1389 cfile->fid.persistent_fid, cfile->fid.volatile_fid,
1390 current->tgid, length, offset, type, wait);
1394 smb2_get_lease_key(struct inode *inode, struct cifs_fid *fid)
1396 memcpy(fid->lease_key, CIFS_I(inode)->lease_key, SMB2_LEASE_KEY_SIZE);
1400 smb2_set_lease_key(struct inode *inode, struct cifs_fid *fid)
1402 memcpy(CIFS_I(inode)->lease_key, fid->lease_key, SMB2_LEASE_KEY_SIZE);
1406 smb2_new_lease_key(struct cifs_fid *fid)
1408 generate_random_uuid(fid->lease_key);
1412 smb2_get_dfs_refer(const unsigned int xid, struct cifs_ses *ses,
1413 const char *search_name,
1414 struct dfs_info3_param **target_nodes,
1415 unsigned int *num_of_nodes,
1416 const struct nls_table *nls_codepage, int remap)
1419 __le16 *utf16_path = NULL;
1420 int utf16_path_len = 0;
1421 struct cifs_tcon *tcon;
1422 struct fsctl_get_dfs_referral_req *dfs_req = NULL;
1423 struct get_dfs_referral_rsp *dfs_rsp = NULL;
1424 u32 dfs_req_size = 0, dfs_rsp_size = 0;
1426 cifs_dbg(FYI, "smb2_get_dfs_refer path <%s>\n", search_name);
1429 * Use any tcon from the current session. Here, the first one.
1431 spin_lock(&cifs_tcp_ses_lock);
1432 tcon = list_first_entry_or_null(&ses->tcon_list, struct cifs_tcon,
1436 spin_unlock(&cifs_tcp_ses_lock);
1439 cifs_dbg(VFS, "session %p has no tcon available for a dfs referral request\n",
1445 utf16_path = cifs_strndup_to_utf16(search_name, PATH_MAX,
1447 nls_codepage, remap);
1453 dfs_req_size = sizeof(*dfs_req) + utf16_path_len;
1454 dfs_req = kzalloc(dfs_req_size, GFP_KERNEL);
1460 /* Highest DFS referral version understood */
1461 dfs_req->MaxReferralLevel = DFS_VERSION;
1463 /* Path to resolve in an UTF-16 null-terminated string */
1464 memcpy(dfs_req->RequestFileName, utf16_path, utf16_path_len);
1467 /* try first with IPC */
1468 rc = SMB2_ioctl(xid, tcon, NO_FILE_ID, NO_FILE_ID,
1469 FSCTL_DFS_GET_REFERRALS,
1470 true /* is_fsctl */, true /* use_ipc */,
1471 (char *)dfs_req, dfs_req_size,
1472 (char **)&dfs_rsp, &dfs_rsp_size);
1473 if (rc == -ENOTCONN) {
1474 /* try with normal tcon */
1475 rc = SMB2_ioctl(xid, tcon, NO_FILE_ID, NO_FILE_ID,
1476 FSCTL_DFS_GET_REFERRALS,
1477 true /* is_fsctl */, false /*use_ipc*/,
1478 (char *)dfs_req, dfs_req_size,
1479 (char **)&dfs_rsp, &dfs_rsp_size);
1481 } while (rc == -EAGAIN);
1484 cifs_dbg(VFS, "ioctl error in smb2_get_dfs_refer rc=%d\n", rc);
1488 rc = parse_dfs_referrals(dfs_rsp, dfs_rsp_size,
1489 num_of_nodes, target_nodes,
1490 nls_codepage, remap, search_name,
1491 true /* is_unicode */);
1493 cifs_dbg(VFS, "parse error in smb2_get_dfs_refer rc=%d\n", rc);
1499 spin_lock(&cifs_tcp_ses_lock);
1501 spin_unlock(&cifs_tcp_ses_lock);
1508 #define SMB2_SYMLINK_STRUCT_SIZE \
1509 (sizeof(struct smb2_err_rsp) - 1 + sizeof(struct smb2_symlink_err_rsp))
1512 smb2_query_symlink(const unsigned int xid, struct cifs_tcon *tcon,
1513 const char *full_path, char **target_path,
1514 struct cifs_sb_info *cifs_sb)
1518 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
1519 struct cifs_open_parms oparms;
1520 struct cifs_fid fid;
1521 struct smb2_err_rsp *err_buf = NULL;
1522 struct smb2_symlink_err_rsp *symlink;
1523 unsigned int sub_len;
1524 unsigned int sub_offset;
1525 unsigned int print_len;
1526 unsigned int print_offset;
1528 cifs_dbg(FYI, "%s: path: %s\n", __func__, full_path);
1530 utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb);
1535 oparms.desired_access = FILE_READ_ATTRIBUTES;
1536 oparms.disposition = FILE_OPEN;
1537 if (backup_cred(cifs_sb))
1538 oparms.create_options = CREATE_OPEN_BACKUP_INTENT;
1540 oparms.create_options = 0;
1542 oparms.reconnect = false;
1544 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, &err_buf);
1546 if (!rc || !err_buf) {
1551 if (le32_to_cpu(err_buf->ByteCount) < sizeof(struct smb2_symlink_err_rsp) ||
1552 get_rfc1002_length(err_buf) + 4 < SMB2_SYMLINK_STRUCT_SIZE) {
1557 /* open must fail on symlink - reset rc */
1559 symlink = (struct smb2_symlink_err_rsp *)err_buf->ErrorData;
1560 sub_len = le16_to_cpu(symlink->SubstituteNameLength);
1561 sub_offset = le16_to_cpu(symlink->SubstituteNameOffset);
1562 print_len = le16_to_cpu(symlink->PrintNameLength);
1563 print_offset = le16_to_cpu(symlink->PrintNameOffset);
1565 if (get_rfc1002_length(err_buf) + 4 <
1566 SMB2_SYMLINK_STRUCT_SIZE + sub_offset + sub_len) {
1571 if (get_rfc1002_length(err_buf) + 4 <
1572 SMB2_SYMLINK_STRUCT_SIZE + print_offset + print_len) {
1577 *target_path = cifs_strndup_from_utf16(
1578 (char *)symlink->PathBuffer + sub_offset,
1579 sub_len, true, cifs_sb->local_nls);
1580 if (!(*target_path)) {
1584 convert_delimiter(*target_path, '/');
1585 cifs_dbg(FYI, "%s: target path: %s\n", __func__, *target_path);
1590 #ifdef CONFIG_CIFS_ACL
1591 static struct cifs_ntsd *
1592 get_smb2_acl_by_fid(struct cifs_sb_info *cifs_sb,
1593 const struct cifs_fid *cifsfid, u32 *pacllen)
1595 struct cifs_ntsd *pntsd = NULL;
1597 int rc = -EOPNOTSUPP;
1598 struct tcon_link *tlink = cifs_sb_tlink(cifs_sb);
1601 return ERR_CAST(tlink);
1604 cifs_dbg(FYI, "trying to get acl\n");
1606 rc = SMB2_query_acl(xid, tlink_tcon(tlink), cifsfid->persistent_fid,
1607 cifsfid->volatile_fid, (void **)&pntsd, pacllen);
1610 cifs_put_tlink(tlink);
1612 cifs_dbg(FYI, "%s: rc = %d ACL len %d\n", __func__, rc, *pacllen);
1619 static struct cifs_ntsd *
1620 get_smb2_acl_by_path(struct cifs_sb_info *cifs_sb,
1621 const char *path, u32 *pacllen)
1623 struct cifs_ntsd *pntsd = NULL;
1624 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
1627 struct cifs_tcon *tcon;
1628 struct tcon_link *tlink = cifs_sb_tlink(cifs_sb);
1629 struct cifs_fid fid;
1630 struct cifs_open_parms oparms;
1633 cifs_dbg(FYI, "get smb3 acl for path %s\n", path);
1635 return ERR_CAST(tlink);
1637 tcon = tlink_tcon(tlink);
1640 if (backup_cred(cifs_sb))
1641 oparms.create_options = CREATE_OPEN_BACKUP_INTENT;
1643 oparms.create_options = 0;
1645 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
1653 oparms.desired_access = READ_CONTROL;
1654 oparms.disposition = FILE_OPEN;
1656 oparms.reconnect = false;
1658 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL);
1661 rc = SMB2_query_acl(xid, tlink_tcon(tlink), fid.persistent_fid,
1662 fid.volatile_fid, (void **)&pntsd, pacllen);
1663 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
1666 cifs_put_tlink(tlink);
1669 cifs_dbg(FYI, "%s: rc = %d ACL len %d\n", __func__, rc, *pacllen);
1675 #ifdef CONFIG_CIFS_ACL
1677 set_smb2_acl(struct cifs_ntsd *pnntsd, __u32 acllen,
1678 struct inode *inode, const char *path, int aclflag)
1680 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
1682 int rc, access_flags = 0;
1683 struct cifs_tcon *tcon;
1684 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
1685 struct tcon_link *tlink = cifs_sb_tlink(cifs_sb);
1686 struct cifs_fid fid;
1687 struct cifs_open_parms oparms;
1690 cifs_dbg(FYI, "set smb3 acl for path %s\n", path);
1692 return PTR_ERR(tlink);
1694 tcon = tlink_tcon(tlink);
1697 if (backup_cred(cifs_sb))
1698 oparms.create_options = CREATE_OPEN_BACKUP_INTENT;
1700 oparms.create_options = 0;
1702 if (aclflag == CIFS_ACL_OWNER || aclflag == CIFS_ACL_GROUP)
1703 access_flags = WRITE_OWNER;
1705 access_flags = WRITE_DAC;
1707 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
1715 oparms.desired_access = access_flags;
1716 oparms.disposition = FILE_OPEN;
1719 oparms.reconnect = false;
1721 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL);
1724 rc = SMB2_set_acl(xid, tlink_tcon(tlink), fid.persistent_fid,
1725 fid.volatile_fid, pnntsd, acllen, aclflag);
1726 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
1729 cifs_put_tlink(tlink);
1733 #endif /* CIFS_ACL */
1735 /* Retrieve an ACL from the server */
1736 static struct cifs_ntsd *
1737 get_smb2_acl(struct cifs_sb_info *cifs_sb,
1738 struct inode *inode, const char *path,
1741 struct cifs_ntsd *pntsd = NULL;
1742 struct cifsFileInfo *open_file = NULL;
1745 open_file = find_readable_file(CIFS_I(inode), true);
1747 return get_smb2_acl_by_path(cifs_sb, path, pacllen);
1749 pntsd = get_smb2_acl_by_fid(cifs_sb, &open_file->fid, pacllen);
1750 cifsFileInfo_put(open_file);
1755 static long smb3_zero_range(struct file *file, struct cifs_tcon *tcon,
1756 loff_t offset, loff_t len, bool keep_size)
1758 struct inode *inode;
1759 struct cifsInodeInfo *cifsi;
1760 struct cifsFileInfo *cfile = file->private_data;
1761 struct file_zero_data_information fsctl_buf;
1767 inode = d_inode(cfile->dentry);
1768 cifsi = CIFS_I(inode);
1771 * We zero the range through ioctl, so we need remove the page caches
1772 * first, otherwise the data may be inconsistent with the server.
1774 truncate_pagecache_range(inode, offset, offset + len - 1);
1776 /* if file not oplocked can't be sure whether asking to extend size */
1777 if (!CIFS_CACHE_READ(cifsi))
1778 if (keep_size == false) {
1785 * Must check if file sparse since fallocate -z (zero range) assumes
1786 * non-sparse allocation
1788 if (!(cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE)) {
1795 * need to make sure we are not asked to extend the file since the SMB3
1796 * fsctl does not change the file size. In the future we could change
1797 * this to zero the first part of the range then set the file size
1798 * which for a non sparse file would zero the newly extended range
1800 if (keep_size == false)
1801 if (i_size_read(inode) < offset + len) {
1807 cifs_dbg(FYI, "offset %lld len %lld", offset, len);
1809 fsctl_buf.FileOffset = cpu_to_le64(offset);
1810 fsctl_buf.BeyondFinalZero = cpu_to_le64(offset + len);
1812 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
1813 cfile->fid.volatile_fid, FSCTL_SET_ZERO_DATA,
1814 true /* is_fctl */, false /* use_ipc */,
1816 sizeof(struct file_zero_data_information), NULL, NULL);
1821 static long smb3_punch_hole(struct file *file, struct cifs_tcon *tcon,
1822 loff_t offset, loff_t len)
1824 struct inode *inode;
1825 struct cifsInodeInfo *cifsi;
1826 struct cifsFileInfo *cfile = file->private_data;
1827 struct file_zero_data_information fsctl_buf;
1830 __u8 set_sparse = 1;
1834 inode = d_inode(cfile->dentry);
1835 cifsi = CIFS_I(inode);
1837 /* Need to make file sparse, if not already, before freeing range. */
1838 /* Consider adding equivalent for compressed since it could also work */
1839 if (!smb2_set_sparse(xid, tcon, cfile, inode, set_sparse)) {
1846 * We implement the punch hole through ioctl, so we need remove the page
1847 * caches first, otherwise the data may be inconsistent with the server.
1849 truncate_pagecache_range(inode, offset, offset + len - 1);
1851 cifs_dbg(FYI, "offset %lld len %lld", offset, len);
1853 fsctl_buf.FileOffset = cpu_to_le64(offset);
1854 fsctl_buf.BeyondFinalZero = cpu_to_le64(offset + len);
1856 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
1857 cfile->fid.volatile_fid, FSCTL_SET_ZERO_DATA,
1858 true /* is_fctl */, false /* use_ipc */,
1860 sizeof(struct file_zero_data_information), NULL, NULL);
1865 static long smb3_simple_falloc(struct file *file, struct cifs_tcon *tcon,
1866 loff_t off, loff_t len, bool keep_size)
1868 struct inode *inode;
1869 struct cifsInodeInfo *cifsi;
1870 struct cifsFileInfo *cfile = file->private_data;
1871 long rc = -EOPNOTSUPP;
1876 inode = d_inode(cfile->dentry);
1877 cifsi = CIFS_I(inode);
1879 /* if file not oplocked can't be sure whether asking to extend size */
1880 if (!CIFS_CACHE_READ(cifsi))
1881 if (keep_size == false) {
1887 * Files are non-sparse by default so falloc may be a no-op
1888 * Must check if file sparse. If not sparse, and not extending
1889 * then no need to do anything since file already allocated
1891 if ((cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) == 0) {
1892 if (keep_size == true)
1894 /* check if extending file */
1895 else if (i_size_read(inode) >= off + len)
1896 /* not extending file and already not sparse */
1898 /* BB: in future add else clause to extend file */
1905 if ((keep_size == true) || (i_size_read(inode) >= off + len)) {
1907 * Check if falloc starts within first few pages of file
1908 * and ends within a few pages of the end of file to
1909 * ensure that most of file is being forced to be
1910 * fallocated now. If so then setting whole file sparse
1911 * ie potentially making a few extra pages at the beginning
1912 * or end of the file non-sparse via set_sparse is harmless.
1914 if ((off > 8192) || (off + len + 8192 < i_size_read(inode))) {
1920 rc = smb2_set_sparse(xid, tcon, cfile, inode, false);
1922 /* BB: else ... in future add code to extend file and set sparse */
1930 static long smb3_fallocate(struct file *file, struct cifs_tcon *tcon, int mode,
1931 loff_t off, loff_t len)
1933 /* KEEP_SIZE already checked for by do_fallocate */
1934 if (mode & FALLOC_FL_PUNCH_HOLE)
1935 return smb3_punch_hole(file, tcon, off, len);
1936 else if (mode & FALLOC_FL_ZERO_RANGE) {
1937 if (mode & FALLOC_FL_KEEP_SIZE)
1938 return smb3_zero_range(file, tcon, off, len, true);
1939 return smb3_zero_range(file, tcon, off, len, false);
1940 } else if (mode == FALLOC_FL_KEEP_SIZE)
1941 return smb3_simple_falloc(file, tcon, off, len, true);
1943 return smb3_simple_falloc(file, tcon, off, len, false);
1949 smb2_downgrade_oplock(struct TCP_Server_Info *server,
1950 struct cifsInodeInfo *cinode, __u32 oplock,
1951 unsigned int epoch, bool *purge_cache)
1953 server->ops->set_oplock_level(cinode, oplock, 0, NULL);
1957 smb21_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
1958 unsigned int epoch, bool *purge_cache);
1961 smb3_downgrade_oplock(struct TCP_Server_Info *server,
1962 struct cifsInodeInfo *cinode, __u32 oplock,
1963 unsigned int epoch, bool *purge_cache)
1965 unsigned int old_state = cinode->oplock;
1966 unsigned int old_epoch = cinode->epoch;
1967 unsigned int new_state;
1969 if (epoch > old_epoch) {
1970 smb21_set_oplock_level(cinode, oplock, 0, NULL);
1971 cinode->epoch = epoch;
1974 new_state = cinode->oplock;
1975 *purge_cache = false;
1977 if ((old_state & CIFS_CACHE_READ_FLG) != 0 &&
1978 (new_state & CIFS_CACHE_READ_FLG) == 0)
1979 *purge_cache = true;
1980 else if (old_state == new_state && (epoch - old_epoch > 1))
1981 *purge_cache = true;
1985 smb2_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
1986 unsigned int epoch, bool *purge_cache)
1989 if (oplock == SMB2_OPLOCK_LEVEL_NOCHANGE)
1991 if (oplock == SMB2_OPLOCK_LEVEL_BATCH) {
1992 cinode->oplock = CIFS_CACHE_RHW_FLG;
1993 cifs_dbg(FYI, "Batch Oplock granted on inode %p\n",
1994 &cinode->vfs_inode);
1995 } else if (oplock == SMB2_OPLOCK_LEVEL_EXCLUSIVE) {
1996 cinode->oplock = CIFS_CACHE_RW_FLG;
1997 cifs_dbg(FYI, "Exclusive Oplock granted on inode %p\n",
1998 &cinode->vfs_inode);
1999 } else if (oplock == SMB2_OPLOCK_LEVEL_II) {
2000 cinode->oplock = CIFS_CACHE_READ_FLG;
2001 cifs_dbg(FYI, "Level II Oplock granted on inode %p\n",
2002 &cinode->vfs_inode);
2008 smb21_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
2009 unsigned int epoch, bool *purge_cache)
2011 char message[5] = {0};
2012 unsigned int new_oplock = 0;
2015 if (oplock == SMB2_OPLOCK_LEVEL_NOCHANGE)
2018 /* Check if the server granted an oplock rather than a lease */
2019 if (oplock & SMB2_OPLOCK_LEVEL_EXCLUSIVE)
2020 return smb2_set_oplock_level(cinode, oplock, epoch,
2023 if (oplock & SMB2_LEASE_READ_CACHING_HE) {
2024 new_oplock |= CIFS_CACHE_READ_FLG;
2025 strcat(message, "R");
2027 if (oplock & SMB2_LEASE_HANDLE_CACHING_HE) {
2028 new_oplock |= CIFS_CACHE_HANDLE_FLG;
2029 strcat(message, "H");
2031 if (oplock & SMB2_LEASE_WRITE_CACHING_HE) {
2032 new_oplock |= CIFS_CACHE_WRITE_FLG;
2033 strcat(message, "W");
2036 strncpy(message, "None", sizeof(message));
2038 cinode->oplock = new_oplock;
2039 cifs_dbg(FYI, "%s Lease granted on inode %p\n", message,
2040 &cinode->vfs_inode);
2044 smb3_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
2045 unsigned int epoch, bool *purge_cache)
2047 unsigned int old_oplock = cinode->oplock;
2049 smb21_set_oplock_level(cinode, oplock, epoch, purge_cache);
2052 *purge_cache = false;
2053 if (old_oplock == CIFS_CACHE_READ_FLG) {
2054 if (cinode->oplock == CIFS_CACHE_READ_FLG &&
2055 (epoch - cinode->epoch > 0))
2056 *purge_cache = true;
2057 else if (cinode->oplock == CIFS_CACHE_RH_FLG &&
2058 (epoch - cinode->epoch > 1))
2059 *purge_cache = true;
2060 else if (cinode->oplock == CIFS_CACHE_RHW_FLG &&
2061 (epoch - cinode->epoch > 1))
2062 *purge_cache = true;
2063 else if (cinode->oplock == 0 &&
2064 (epoch - cinode->epoch > 0))
2065 *purge_cache = true;
2066 } else if (old_oplock == CIFS_CACHE_RH_FLG) {
2067 if (cinode->oplock == CIFS_CACHE_RH_FLG &&
2068 (epoch - cinode->epoch > 0))
2069 *purge_cache = true;
2070 else if (cinode->oplock == CIFS_CACHE_RHW_FLG &&
2071 (epoch - cinode->epoch > 1))
2072 *purge_cache = true;
2074 cinode->epoch = epoch;
2079 smb2_is_read_op(__u32 oplock)
2081 return oplock == SMB2_OPLOCK_LEVEL_II;
2085 smb21_is_read_op(__u32 oplock)
2087 return (oplock & SMB2_LEASE_READ_CACHING_HE) &&
2088 !(oplock & SMB2_LEASE_WRITE_CACHING_HE);
2092 map_oplock_to_lease(u8 oplock)
2094 if (oplock == SMB2_OPLOCK_LEVEL_EXCLUSIVE)
2095 return SMB2_LEASE_WRITE_CACHING | SMB2_LEASE_READ_CACHING;
2096 else if (oplock == SMB2_OPLOCK_LEVEL_II)
2097 return SMB2_LEASE_READ_CACHING;
2098 else if (oplock == SMB2_OPLOCK_LEVEL_BATCH)
2099 return SMB2_LEASE_HANDLE_CACHING | SMB2_LEASE_READ_CACHING |
2100 SMB2_LEASE_WRITE_CACHING;
2105 smb2_create_lease_buf(u8 *lease_key, u8 oplock)
2107 struct create_lease *buf;
2109 buf = kzalloc(sizeof(struct create_lease), GFP_KERNEL);
2113 buf->lcontext.LeaseKeyLow = cpu_to_le64(*((u64 *)lease_key));
2114 buf->lcontext.LeaseKeyHigh = cpu_to_le64(*((u64 *)(lease_key + 8)));
2115 buf->lcontext.LeaseState = map_oplock_to_lease(oplock);
2117 buf->ccontext.DataOffset = cpu_to_le16(offsetof
2118 (struct create_lease, lcontext));
2119 buf->ccontext.DataLength = cpu_to_le32(sizeof(struct lease_context));
2120 buf->ccontext.NameOffset = cpu_to_le16(offsetof
2121 (struct create_lease, Name));
2122 buf->ccontext.NameLength = cpu_to_le16(4);
2123 /* SMB2_CREATE_REQUEST_LEASE is "RqLs" */
2132 smb3_create_lease_buf(u8 *lease_key, u8 oplock)
2134 struct create_lease_v2 *buf;
2136 buf = kzalloc(sizeof(struct create_lease_v2), GFP_KERNEL);
2140 buf->lcontext.LeaseKeyLow = cpu_to_le64(*((u64 *)lease_key));
2141 buf->lcontext.LeaseKeyHigh = cpu_to_le64(*((u64 *)(lease_key + 8)));
2142 buf->lcontext.LeaseState = map_oplock_to_lease(oplock);
2144 buf->ccontext.DataOffset = cpu_to_le16(offsetof
2145 (struct create_lease_v2, lcontext));
2146 buf->ccontext.DataLength = cpu_to_le32(sizeof(struct lease_context_v2));
2147 buf->ccontext.NameOffset = cpu_to_le16(offsetof
2148 (struct create_lease_v2, Name));
2149 buf->ccontext.NameLength = cpu_to_le16(4);
2150 /* SMB2_CREATE_REQUEST_LEASE is "RqLs" */
2159 smb2_parse_lease_buf(void *buf, unsigned int *epoch)
2161 struct create_lease *lc = (struct create_lease *)buf;
2163 *epoch = 0; /* not used */
2164 if (lc->lcontext.LeaseFlags & SMB2_LEASE_FLAG_BREAK_IN_PROGRESS)
2165 return SMB2_OPLOCK_LEVEL_NOCHANGE;
2166 return le32_to_cpu(lc->lcontext.LeaseState);
2170 smb3_parse_lease_buf(void *buf, unsigned int *epoch)
2172 struct create_lease_v2 *lc = (struct create_lease_v2 *)buf;
2174 *epoch = le16_to_cpu(lc->lcontext.Epoch);
2175 if (lc->lcontext.LeaseFlags & SMB2_LEASE_FLAG_BREAK_IN_PROGRESS)
2176 return SMB2_OPLOCK_LEVEL_NOCHANGE;
2177 return le32_to_cpu(lc->lcontext.LeaseState);
2181 smb2_wp_retry_size(struct inode *inode)
2183 return min_t(unsigned int, CIFS_SB(inode->i_sb)->wsize,
2184 SMB2_MAX_BUFFER_SIZE);
2188 smb2_dir_needs_close(struct cifsFileInfo *cfile)
2190 return !cfile->invalidHandle;
2194 fill_transform_hdr(struct smb2_transform_hdr *tr_hdr, struct smb_rqst *old_rq)
2196 struct smb2_sync_hdr *shdr =
2197 (struct smb2_sync_hdr *)old_rq->rq_iov[1].iov_base;
2198 unsigned int orig_len = get_rfc1002_length(old_rq->rq_iov[0].iov_base);
2200 memset(tr_hdr, 0, sizeof(struct smb2_transform_hdr));
2201 tr_hdr->ProtocolId = SMB2_TRANSFORM_PROTO_NUM;
2202 tr_hdr->OriginalMessageSize = cpu_to_le32(orig_len);
2203 tr_hdr->Flags = cpu_to_le16(0x01);
2204 get_random_bytes(&tr_hdr->Nonce, SMB3_AES128CMM_NONCE);
2205 memcpy(&tr_hdr->SessionId, &shdr->SessionId, 8);
2206 inc_rfc1001_len(tr_hdr, sizeof(struct smb2_transform_hdr) - 4);
2207 inc_rfc1001_len(tr_hdr, orig_len);
2210 /* We can not use the normal sg_set_buf() as we will sometimes pass a
2211 * stack object as buf.
2213 static inline void smb2_sg_set_buf(struct scatterlist *sg, const void *buf,
2214 unsigned int buflen)
2218 * VMAP_STACK (at least) puts stack into the vmalloc address space
2220 if (is_vmalloc_addr(buf))
2221 addr = vmalloc_to_page(buf);
2223 addr = virt_to_page(buf);
2224 sg_set_page(sg, addr, buflen, offset_in_page(buf));
2227 static struct scatterlist *
2228 init_sg(struct smb_rqst *rqst, u8 *sign)
2230 unsigned int sg_len = rqst->rq_nvec + rqst->rq_npages + 1;
2231 unsigned int assoc_data_len = sizeof(struct smb2_transform_hdr) - 24;
2232 struct scatterlist *sg;
2236 sg = kmalloc_array(sg_len, sizeof(struct scatterlist), GFP_KERNEL);
2240 sg_init_table(sg, sg_len);
2241 smb2_sg_set_buf(&sg[0], rqst->rq_iov[0].iov_base + 24, assoc_data_len);
2242 for (i = 1; i < rqst->rq_nvec; i++)
2243 smb2_sg_set_buf(&sg[i], rqst->rq_iov[i].iov_base,
2244 rqst->rq_iov[i].iov_len);
2245 for (j = 0; i < sg_len - 1; i++, j++) {
2246 unsigned int len = (j < rqst->rq_npages - 1) ? rqst->rq_pagesz
2248 sg_set_page(&sg[i], rqst->rq_pages[j], len, 0);
2250 smb2_sg_set_buf(&sg[sg_len - 1], sign, SMB2_SIGNATURE_SIZE);
2254 struct cifs_crypt_result {
2256 struct completion completion;
2259 static void cifs_crypt_complete(struct crypto_async_request *req, int err)
2261 struct cifs_crypt_result *res = req->data;
2263 if (err == -EINPROGRESS)
2267 complete(&res->completion);
2271 smb2_get_enc_key(struct TCP_Server_Info *server, __u64 ses_id, int enc, u8 *key)
2273 struct cifs_ses *ses;
2276 spin_lock(&cifs_tcp_ses_lock);
2277 list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) {
2278 if (ses->Suid != ses_id)
2280 ses_enc_key = enc ? ses->smb3encryptionkey :
2281 ses->smb3decryptionkey;
2282 memcpy(key, ses_enc_key, SMB3_SIGN_KEY_SIZE);
2283 spin_unlock(&cifs_tcp_ses_lock);
2286 spin_unlock(&cifs_tcp_ses_lock);
2291 * Encrypt or decrypt @rqst message. @rqst has the following format:
2292 * iov[0] - transform header (associate data),
2293 * iov[1-N] and pages - data to encrypt.
2294 * On success return encrypted data in iov[1-N] and pages, leave iov[0]
2298 crypt_message(struct TCP_Server_Info *server, struct smb_rqst *rqst, int enc)
2300 struct smb2_transform_hdr *tr_hdr =
2301 (struct smb2_transform_hdr *)rqst->rq_iov[0].iov_base;
2302 unsigned int assoc_data_len = sizeof(struct smb2_transform_hdr) - 24;
2304 struct scatterlist *sg;
2305 u8 sign[SMB2_SIGNATURE_SIZE] = {};
2306 u8 key[SMB3_SIGN_KEY_SIZE];
2307 struct aead_request *req;
2309 unsigned int iv_len;
2310 struct cifs_crypt_result result = {0, };
2311 struct crypto_aead *tfm;
2312 unsigned int crypt_len = le32_to_cpu(tr_hdr->OriginalMessageSize);
2314 init_completion(&result.completion);
2316 rc = smb2_get_enc_key(server, tr_hdr->SessionId, enc, key);
2318 cifs_dbg(VFS, "%s: Could not get %scryption key\n", __func__,
2323 rc = smb3_crypto_aead_allocate(server);
2325 cifs_dbg(VFS, "%s: crypto alloc failed\n", __func__);
2329 tfm = enc ? server->secmech.ccmaesencrypt :
2330 server->secmech.ccmaesdecrypt;
2331 rc = crypto_aead_setkey(tfm, key, SMB3_SIGN_KEY_SIZE);
2333 cifs_dbg(VFS, "%s: Failed to set aead key %d\n", __func__, rc);
2337 rc = crypto_aead_setauthsize(tfm, SMB2_SIGNATURE_SIZE);
2339 cifs_dbg(VFS, "%s: Failed to set authsize %d\n", __func__, rc);
2343 req = aead_request_alloc(tfm, GFP_KERNEL);
2345 cifs_dbg(VFS, "%s: Failed to alloc aead request", __func__);
2350 memcpy(sign, &tr_hdr->Signature, SMB2_SIGNATURE_SIZE);
2351 crypt_len += SMB2_SIGNATURE_SIZE;
2354 sg = init_sg(rqst, sign);
2356 cifs_dbg(VFS, "%s: Failed to init sg", __func__);
2361 iv_len = crypto_aead_ivsize(tfm);
2362 iv = kzalloc(iv_len, GFP_KERNEL);
2364 cifs_dbg(VFS, "%s: Failed to alloc IV", __func__);
2369 memcpy(iv + 1, (char *)tr_hdr->Nonce, SMB3_AES128CMM_NONCE);
2371 aead_request_set_crypt(req, sg, sg, crypt_len, iv);
2372 aead_request_set_ad(req, assoc_data_len);
2374 aead_request_set_callback(req, CRYPTO_TFM_REQ_MAY_BACKLOG,
2375 cifs_crypt_complete, &result);
2377 rc = enc ? crypto_aead_encrypt(req) : crypto_aead_decrypt(req);
2379 if (rc == -EINPROGRESS || rc == -EBUSY) {
2380 wait_for_completion(&result.completion);
2385 memcpy(&tr_hdr->Signature, sign, SMB2_SIGNATURE_SIZE);
2396 smb3_init_transform_rq(struct TCP_Server_Info *server, struct smb_rqst *new_rq,
2397 struct smb_rqst *old_rq)
2400 struct page **pages;
2401 struct smb2_transform_hdr *tr_hdr;
2402 unsigned int npages = old_rq->rq_npages;
2406 pages = kmalloc_array(npages, sizeof(struct page *), GFP_KERNEL);
2410 new_rq->rq_pages = pages;
2411 new_rq->rq_npages = old_rq->rq_npages;
2412 new_rq->rq_pagesz = old_rq->rq_pagesz;
2413 new_rq->rq_tailsz = old_rq->rq_tailsz;
2415 for (i = 0; i < npages; i++) {
2416 pages[i] = alloc_page(GFP_KERNEL|__GFP_HIGHMEM);
2418 goto err_free_pages;
2421 iov = kmalloc_array(old_rq->rq_nvec, sizeof(struct kvec), GFP_KERNEL);
2423 goto err_free_pages;
2425 /* copy all iovs from the old except the 1st one (rfc1002 length) */
2426 memcpy(&iov[1], &old_rq->rq_iov[1],
2427 sizeof(struct kvec) * (old_rq->rq_nvec - 1));
2428 new_rq->rq_iov = iov;
2429 new_rq->rq_nvec = old_rq->rq_nvec;
2431 tr_hdr = kmalloc(sizeof(struct smb2_transform_hdr), GFP_KERNEL);
2435 /* fill the 1st iov with a transform header */
2436 fill_transform_hdr(tr_hdr, old_rq);
2437 new_rq->rq_iov[0].iov_base = tr_hdr;
2438 new_rq->rq_iov[0].iov_len = sizeof(struct smb2_transform_hdr);
2440 /* copy pages form the old */
2441 for (i = 0; i < npages; i++) {
2442 char *dst = kmap(new_rq->rq_pages[i]);
2443 char *src = kmap(old_rq->rq_pages[i]);
2444 unsigned int len = (i < npages - 1) ? new_rq->rq_pagesz :
2446 memcpy(dst, src, len);
2447 kunmap(new_rq->rq_pages[i]);
2448 kunmap(old_rq->rq_pages[i]);
2451 rc = crypt_message(server, new_rq, 1);
2452 cifs_dbg(FYI, "encrypt message returned %d", rc);
2454 goto err_free_tr_hdr;
2463 for (i = i - 1; i >= 0; i--)
2470 smb3_free_transform_rq(struct smb_rqst *rqst)
2472 int i = rqst->rq_npages - 1;
2475 put_page(rqst->rq_pages[i]);
2476 kfree(rqst->rq_pages);
2477 /* free transform header */
2478 kfree(rqst->rq_iov[0].iov_base);
2479 kfree(rqst->rq_iov);
2483 smb3_is_transform_hdr(void *buf)
2485 struct smb2_transform_hdr *trhdr = buf;
2487 return trhdr->ProtocolId == SMB2_TRANSFORM_PROTO_NUM;
2491 decrypt_raw_data(struct TCP_Server_Info *server, char *buf,
2492 unsigned int buf_data_size, struct page **pages,
2493 unsigned int npages, unsigned int page_data_size)
2496 struct smb_rqst rqst = {NULL};
2497 struct smb2_hdr *hdr;
2500 iov[0].iov_base = buf;
2501 iov[0].iov_len = sizeof(struct smb2_transform_hdr);
2502 iov[1].iov_base = buf + sizeof(struct smb2_transform_hdr);
2503 iov[1].iov_len = buf_data_size;
2507 rqst.rq_pages = pages;
2508 rqst.rq_npages = npages;
2509 rqst.rq_pagesz = PAGE_SIZE;
2510 rqst.rq_tailsz = (page_data_size % PAGE_SIZE) ? : PAGE_SIZE;
2512 rc = crypt_message(server, &rqst, 0);
2513 cifs_dbg(FYI, "decrypt message returned %d\n", rc);
2518 memmove(buf + 4, iov[1].iov_base, buf_data_size);
2519 hdr = (struct smb2_hdr *)buf;
2520 hdr->smb2_buf_length = cpu_to_be32(buf_data_size + page_data_size);
2521 server->total_read = buf_data_size + page_data_size + 4;
2527 read_data_into_pages(struct TCP_Server_Info *server, struct page **pages,
2528 unsigned int npages, unsigned int len)
2533 for (i = 0; i < npages; i++) {
2534 struct page *page = pages[i];
2538 if (len >= PAGE_SIZE) {
2539 /* enough data to fill the page */
2543 zero_user(page, len, PAGE_SIZE - len);
2546 length = cifs_read_page_from_socket(server, page, n);
2549 server->total_read += length;
2556 init_read_bvec(struct page **pages, unsigned int npages, unsigned int data_size,
2557 unsigned int cur_off, struct bio_vec **page_vec)
2559 struct bio_vec *bvec;
2562 bvec = kcalloc(npages, sizeof(struct bio_vec), GFP_KERNEL);
2566 for (i = 0; i < npages; i++) {
2567 bvec[i].bv_page = pages[i];
2568 bvec[i].bv_offset = (i == 0) ? cur_off : 0;
2569 bvec[i].bv_len = min_t(unsigned int, PAGE_SIZE, data_size);
2570 data_size -= bvec[i].bv_len;
2573 if (data_size != 0) {
2574 cifs_dbg(VFS, "%s: something went wrong\n", __func__);
2584 handle_read_data(struct TCP_Server_Info *server, struct mid_q_entry *mid,
2585 char *buf, unsigned int buf_len, struct page **pages,
2586 unsigned int npages, unsigned int page_data_size)
2588 unsigned int data_offset;
2589 unsigned int data_len;
2590 unsigned int cur_off;
2591 unsigned int cur_page_idx;
2592 unsigned int pad_len;
2593 struct cifs_readdata *rdata = mid->callback_data;
2594 struct smb2_sync_hdr *shdr = get_sync_hdr(buf);
2595 struct bio_vec *bvec = NULL;
2596 struct iov_iter iter;
2600 if (shdr->Command != SMB2_READ) {
2601 cifs_dbg(VFS, "only big read responses are supported\n");
2605 if (server->ops->is_session_expired &&
2606 server->ops->is_session_expired(buf)) {
2607 cifs_reconnect(server);
2608 wake_up(&server->response_q);
2612 if (server->ops->is_status_pending &&
2613 server->ops->is_status_pending(buf, server, 0))
2616 /* set up first two iov to get credits */
2617 rdata->iov[0].iov_base = buf;
2618 rdata->iov[0].iov_len = 4;
2619 rdata->iov[1].iov_base = buf + 4;
2620 rdata->iov[1].iov_len =
2621 min_t(unsigned int, buf_len, server->vals->read_rsp_size) - 4;
2622 cifs_dbg(FYI, "0: iov_base=%p iov_len=%zu\n",
2623 rdata->iov[0].iov_base, rdata->iov[0].iov_len);
2624 cifs_dbg(FYI, "1: iov_base=%p iov_len=%zu\n",
2625 rdata->iov[1].iov_base, rdata->iov[1].iov_len);
2627 rdata->result = server->ops->map_error(buf, true);
2628 if (rdata->result != 0) {
2629 cifs_dbg(FYI, "%s: server returned error %d\n",
2630 __func__, rdata->result);
2631 /* normal error on read response */
2632 dequeue_mid(mid, false);
2636 data_offset = server->ops->read_data_offset(buf) + 4;
2637 data_len = server->ops->read_data_length(buf);
2639 if (data_offset < server->vals->read_rsp_size) {
2641 * win2k8 sometimes sends an offset of 0 when the read
2642 * is beyond the EOF. Treat it as if the data starts just after
2645 cifs_dbg(FYI, "%s: data offset (%u) inside read response header\n",
2646 __func__, data_offset);
2647 data_offset = server->vals->read_rsp_size;
2648 } else if (data_offset > MAX_CIFS_SMALL_BUFFER_SIZE) {
2649 /* data_offset is beyond the end of smallbuf */
2650 cifs_dbg(FYI, "%s: data offset (%u) beyond end of smallbuf\n",
2651 __func__, data_offset);
2652 rdata->result = -EIO;
2653 dequeue_mid(mid, rdata->result);
2657 pad_len = data_offset - server->vals->read_rsp_size;
2659 if (buf_len <= data_offset) {
2660 /* read response payload is in pages */
2661 cur_page_idx = pad_len / PAGE_SIZE;
2662 cur_off = pad_len % PAGE_SIZE;
2664 if (cur_page_idx != 0) {
2665 /* data offset is beyond the 1st page of response */
2666 cifs_dbg(FYI, "%s: data offset (%u) beyond 1st page of response\n",
2667 __func__, data_offset);
2668 rdata->result = -EIO;
2669 dequeue_mid(mid, rdata->result);
2673 if (data_len > page_data_size - pad_len) {
2674 /* data_len is corrupt -- discard frame */
2675 rdata->result = -EIO;
2676 dequeue_mid(mid, rdata->result);
2680 rdata->result = init_read_bvec(pages, npages, page_data_size,
2682 if (rdata->result != 0) {
2683 dequeue_mid(mid, rdata->result);
2687 iov_iter_bvec(&iter, WRITE | ITER_BVEC, bvec, npages, data_len);
2688 } else if (buf_len >= data_offset + data_len) {
2689 /* read response payload is in buf */
2690 WARN_ONCE(npages > 0, "read data can be either in buf or in pages");
2691 iov.iov_base = buf + data_offset;
2692 iov.iov_len = data_len;
2693 iov_iter_kvec(&iter, WRITE | ITER_KVEC, &iov, 1, data_len);
2695 /* read response payload cannot be in both buf and pages */
2696 WARN_ONCE(1, "buf can not contain only a part of read data");
2697 rdata->result = -EIO;
2698 dequeue_mid(mid, rdata->result);
2702 length = rdata->copy_into_pages(server, rdata, &iter);
2709 dequeue_mid(mid, false);
2714 receive_encrypted_read(struct TCP_Server_Info *server, struct mid_q_entry **mid)
2716 char *buf = server->smallbuf;
2717 struct smb2_transform_hdr *tr_hdr = (struct smb2_transform_hdr *)buf;
2718 unsigned int npages;
2719 struct page **pages;
2721 unsigned int buflen = get_rfc1002_length(buf) + 4;
2725 len = min_t(unsigned int, buflen, server->vals->read_rsp_size - 4 +
2726 sizeof(struct smb2_transform_hdr)) - HEADER_SIZE(server) + 1;
2728 rc = cifs_read_from_socket(server, buf + HEADER_SIZE(server) - 1, len);
2731 server->total_read += rc;
2733 len = le32_to_cpu(tr_hdr->OriginalMessageSize) + 4 -
2734 server->vals->read_rsp_size;
2735 npages = DIV_ROUND_UP(len, PAGE_SIZE);
2737 pages = kmalloc_array(npages, sizeof(struct page *), GFP_KERNEL);
2743 for (; i < npages; i++) {
2744 pages[i] = alloc_page(GFP_KERNEL|__GFP_HIGHMEM);
2751 /* read read data into pages */
2752 rc = read_data_into_pages(server, pages, npages, len);
2756 rc = cifs_discard_remaining_data(server);
2760 rc = decrypt_raw_data(server, buf, server->vals->read_rsp_size - 4,
2761 pages, npages, len);
2765 *mid = smb2_find_mid(server, buf);
2767 cifs_dbg(FYI, "mid not found\n");
2769 cifs_dbg(FYI, "mid found\n");
2770 (*mid)->decrypted = true;
2771 rc = handle_read_data(server, *mid, buf,
2772 server->vals->read_rsp_size,
2773 pages, npages, len);
2777 for (i = i - 1; i >= 0; i--)
2782 cifs_discard_remaining_data(server);
2787 receive_encrypted_standard(struct TCP_Server_Info *server,
2788 struct mid_q_entry **mid)
2791 char *buf = server->smallbuf;
2792 unsigned int pdu_length = get_rfc1002_length(buf);
2793 unsigned int buf_size;
2794 struct mid_q_entry *mid_entry;
2796 /* switch to large buffer if too big for a small one */
2797 if (pdu_length + 4 > MAX_CIFS_SMALL_BUFFER_SIZE) {
2798 server->large_buf = true;
2799 memcpy(server->bigbuf, buf, server->total_read);
2800 buf = server->bigbuf;
2803 /* now read the rest */
2804 length = cifs_read_from_socket(server, buf + HEADER_SIZE(server) - 1,
2805 pdu_length - HEADER_SIZE(server) + 1 + 4);
2808 server->total_read += length;
2810 buf_size = pdu_length + 4 - sizeof(struct smb2_transform_hdr);
2811 length = decrypt_raw_data(server, buf, buf_size, NULL, 0, 0);
2815 mid_entry = smb2_find_mid(server, buf);
2816 if (mid_entry == NULL)
2817 cifs_dbg(FYI, "mid not found\n");
2819 cifs_dbg(FYI, "mid found\n");
2820 mid_entry->decrypted = true;
2825 if (mid_entry && mid_entry->handle)
2826 return mid_entry->handle(server, mid_entry);
2828 return cifs_handle_standard(server, mid_entry);
2832 smb3_receive_transform(struct TCP_Server_Info *server, struct mid_q_entry **mid)
2834 char *buf = server->smallbuf;
2835 unsigned int pdu_length = get_rfc1002_length(buf);
2836 struct smb2_transform_hdr *tr_hdr = (struct smb2_transform_hdr *)buf;
2837 unsigned int orig_len = le32_to_cpu(tr_hdr->OriginalMessageSize);
2839 if (pdu_length + 4 < sizeof(struct smb2_transform_hdr) +
2840 sizeof(struct smb2_sync_hdr)) {
2841 cifs_dbg(VFS, "Transform message is too small (%u)\n",
2843 cifs_reconnect(server);
2844 wake_up(&server->response_q);
2845 return -ECONNABORTED;
2848 if (pdu_length + 4 < orig_len + sizeof(struct smb2_transform_hdr)) {
2849 cifs_dbg(VFS, "Transform message is broken\n");
2850 cifs_reconnect(server);
2851 wake_up(&server->response_q);
2852 return -ECONNABORTED;
2855 if (pdu_length + 4 > CIFSMaxBufSize + MAX_HEADER_SIZE(server))
2856 return receive_encrypted_read(server, mid);
2858 return receive_encrypted_standard(server, mid);
2862 smb3_handle_read_data(struct TCP_Server_Info *server, struct mid_q_entry *mid)
2864 char *buf = server->large_buf ? server->bigbuf : server->smallbuf;
2866 return handle_read_data(server, mid, buf, get_rfc1002_length(buf) + 4,
2870 struct smb_version_operations smb20_operations = {
2871 .compare_fids = smb2_compare_fids,
2872 .setup_request = smb2_setup_request,
2873 .setup_async_request = smb2_setup_async_request,
2874 .check_receive = smb2_check_receive,
2875 .add_credits = smb2_add_credits,
2876 .set_credits = smb2_set_credits,
2877 .get_credits_field = smb2_get_credits_field,
2878 .get_credits = smb2_get_credits,
2879 .wait_mtu_credits = cifs_wait_mtu_credits,
2880 .get_next_mid = smb2_get_next_mid,
2881 .read_data_offset = smb2_read_data_offset,
2882 .read_data_length = smb2_read_data_length,
2883 .map_error = map_smb2_to_linux_error,
2884 .find_mid = smb2_find_mid,
2885 .check_message = smb2_check_message,
2886 .dump_detail = smb2_dump_detail,
2887 .clear_stats = smb2_clear_stats,
2888 .print_stats = smb2_print_stats,
2889 .is_oplock_break = smb2_is_valid_oplock_break,
2890 .handle_cancelled_mid = smb2_handle_cancelled_mid,
2891 .downgrade_oplock = smb2_downgrade_oplock,
2892 .need_neg = smb2_need_neg,
2893 .negotiate = smb2_negotiate,
2894 .negotiate_wsize = smb2_negotiate_wsize,
2895 .negotiate_rsize = smb2_negotiate_rsize,
2896 .sess_setup = SMB2_sess_setup,
2897 .logoff = SMB2_logoff,
2898 .tree_connect = SMB2_tcon,
2899 .tree_disconnect = SMB2_tdis,
2900 .qfs_tcon = smb2_qfs_tcon,
2901 .is_path_accessible = smb2_is_path_accessible,
2902 .can_echo = smb2_can_echo,
2904 .query_path_info = smb2_query_path_info,
2905 .get_srv_inum = smb2_get_srv_inum,
2906 .query_file_info = smb2_query_file_info,
2907 .set_path_size = smb2_set_path_size,
2908 .set_file_size = smb2_set_file_size,
2909 .set_file_info = smb2_set_file_info,
2910 .set_compression = smb2_set_compression,
2911 .mkdir = smb2_mkdir,
2912 .mkdir_setinfo = smb2_mkdir_setinfo,
2913 .rmdir = smb2_rmdir,
2914 .unlink = smb2_unlink,
2915 .rename = smb2_rename_path,
2916 .create_hardlink = smb2_create_hardlink,
2917 .query_symlink = smb2_query_symlink,
2918 .query_mf_symlink = smb3_query_mf_symlink,
2919 .create_mf_symlink = smb3_create_mf_symlink,
2920 .open = smb2_open_file,
2921 .set_fid = smb2_set_fid,
2922 .close = smb2_close_file,
2923 .flush = smb2_flush_file,
2924 .async_readv = smb2_async_readv,
2925 .async_writev = smb2_async_writev,
2926 .sync_read = smb2_sync_read,
2927 .sync_write = smb2_sync_write,
2928 .query_dir_first = smb2_query_dir_first,
2929 .query_dir_next = smb2_query_dir_next,
2930 .close_dir = smb2_close_dir,
2931 .calc_smb_size = smb2_calc_size,
2932 .is_status_pending = smb2_is_status_pending,
2933 .is_session_expired = smb2_is_session_expired,
2934 .oplock_response = smb2_oplock_response,
2935 .queryfs = smb2_queryfs,
2936 .mand_lock = smb2_mand_lock,
2937 .mand_unlock_range = smb2_unlock_range,
2938 .push_mand_locks = smb2_push_mandatory_locks,
2939 .get_lease_key = smb2_get_lease_key,
2940 .set_lease_key = smb2_set_lease_key,
2941 .new_lease_key = smb2_new_lease_key,
2942 .calc_signature = smb2_calc_signature,
2943 .is_read_op = smb2_is_read_op,
2944 .set_oplock_level = smb2_set_oplock_level,
2945 .create_lease_buf = smb2_create_lease_buf,
2946 .parse_lease_buf = smb2_parse_lease_buf,
2947 .copychunk_range = smb2_copychunk_range,
2948 .wp_retry_size = smb2_wp_retry_size,
2949 .dir_needs_close = smb2_dir_needs_close,
2950 .get_dfs_refer = smb2_get_dfs_refer,
2951 .select_sectype = smb2_select_sectype,
2952 #ifdef CONFIG_CIFS_XATTR
2953 .query_all_EAs = smb2_query_eas,
2954 .set_EA = smb2_set_ea,
2955 #endif /* CIFS_XATTR */
2956 #ifdef CONFIG_CIFS_ACL
2957 .get_acl = get_smb2_acl,
2958 .get_acl_by_fid = get_smb2_acl_by_fid,
2959 .set_acl = set_smb2_acl,
2960 #endif /* CIFS_ACL */
2963 struct smb_version_operations smb21_operations = {
2964 .compare_fids = smb2_compare_fids,
2965 .setup_request = smb2_setup_request,
2966 .setup_async_request = smb2_setup_async_request,
2967 .check_receive = smb2_check_receive,
2968 .add_credits = smb2_add_credits,
2969 .set_credits = smb2_set_credits,
2970 .get_credits_field = smb2_get_credits_field,
2971 .get_credits = smb2_get_credits,
2972 .wait_mtu_credits = smb2_wait_mtu_credits,
2973 .get_next_mid = smb2_get_next_mid,
2974 .read_data_offset = smb2_read_data_offset,
2975 .read_data_length = smb2_read_data_length,
2976 .map_error = map_smb2_to_linux_error,
2977 .find_mid = smb2_find_mid,
2978 .check_message = smb2_check_message,
2979 .dump_detail = smb2_dump_detail,
2980 .clear_stats = smb2_clear_stats,
2981 .print_stats = smb2_print_stats,
2982 .is_oplock_break = smb2_is_valid_oplock_break,
2983 .handle_cancelled_mid = smb2_handle_cancelled_mid,
2984 .downgrade_oplock = smb2_downgrade_oplock,
2985 .need_neg = smb2_need_neg,
2986 .negotiate = smb2_negotiate,
2987 .negotiate_wsize = smb2_negotiate_wsize,
2988 .negotiate_rsize = smb2_negotiate_rsize,
2989 .sess_setup = SMB2_sess_setup,
2990 .logoff = SMB2_logoff,
2991 .tree_connect = SMB2_tcon,
2992 .tree_disconnect = SMB2_tdis,
2993 .qfs_tcon = smb2_qfs_tcon,
2994 .is_path_accessible = smb2_is_path_accessible,
2995 .can_echo = smb2_can_echo,
2997 .query_path_info = smb2_query_path_info,
2998 .get_srv_inum = smb2_get_srv_inum,
2999 .query_file_info = smb2_query_file_info,
3000 .set_path_size = smb2_set_path_size,
3001 .set_file_size = smb2_set_file_size,
3002 .set_file_info = smb2_set_file_info,
3003 .set_compression = smb2_set_compression,
3004 .mkdir = smb2_mkdir,
3005 .mkdir_setinfo = smb2_mkdir_setinfo,
3006 .rmdir = smb2_rmdir,
3007 .unlink = smb2_unlink,
3008 .rename = smb2_rename_path,
3009 .create_hardlink = smb2_create_hardlink,
3010 .query_symlink = smb2_query_symlink,
3011 .query_mf_symlink = smb3_query_mf_symlink,
3012 .create_mf_symlink = smb3_create_mf_symlink,
3013 .open = smb2_open_file,
3014 .set_fid = smb2_set_fid,
3015 .close = smb2_close_file,
3016 .flush = smb2_flush_file,
3017 .async_readv = smb2_async_readv,
3018 .async_writev = smb2_async_writev,
3019 .sync_read = smb2_sync_read,
3020 .sync_write = smb2_sync_write,
3021 .query_dir_first = smb2_query_dir_first,
3022 .query_dir_next = smb2_query_dir_next,
3023 .close_dir = smb2_close_dir,
3024 .calc_smb_size = smb2_calc_size,
3025 .is_status_pending = smb2_is_status_pending,
3026 .is_session_expired = smb2_is_session_expired,
3027 .oplock_response = smb2_oplock_response,
3028 .queryfs = smb2_queryfs,
3029 .mand_lock = smb2_mand_lock,
3030 .mand_unlock_range = smb2_unlock_range,
3031 .push_mand_locks = smb2_push_mandatory_locks,
3032 .get_lease_key = smb2_get_lease_key,
3033 .set_lease_key = smb2_set_lease_key,
3034 .new_lease_key = smb2_new_lease_key,
3035 .calc_signature = smb2_calc_signature,
3036 .is_read_op = smb21_is_read_op,
3037 .set_oplock_level = smb21_set_oplock_level,
3038 .create_lease_buf = smb2_create_lease_buf,
3039 .parse_lease_buf = smb2_parse_lease_buf,
3040 .copychunk_range = smb2_copychunk_range,
3041 .wp_retry_size = smb2_wp_retry_size,
3042 .dir_needs_close = smb2_dir_needs_close,
3043 .enum_snapshots = smb3_enum_snapshots,
3044 .get_dfs_refer = smb2_get_dfs_refer,
3045 .select_sectype = smb2_select_sectype,
3046 #ifdef CONFIG_CIFS_XATTR
3047 .query_all_EAs = smb2_query_eas,
3048 .set_EA = smb2_set_ea,
3049 #endif /* CIFS_XATTR */
3050 #ifdef CONFIG_CIFS_ACL
3051 .get_acl = get_smb2_acl,
3052 .get_acl_by_fid = get_smb2_acl_by_fid,
3053 .set_acl = set_smb2_acl,
3054 #endif /* CIFS_ACL */
3057 struct smb_version_operations smb30_operations = {
3058 .compare_fids = smb2_compare_fids,
3059 .setup_request = smb2_setup_request,
3060 .setup_async_request = smb2_setup_async_request,
3061 .check_receive = smb2_check_receive,
3062 .add_credits = smb2_add_credits,
3063 .set_credits = smb2_set_credits,
3064 .get_credits_field = smb2_get_credits_field,
3065 .get_credits = smb2_get_credits,
3066 .wait_mtu_credits = smb2_wait_mtu_credits,
3067 .get_next_mid = smb2_get_next_mid,
3068 .read_data_offset = smb2_read_data_offset,
3069 .read_data_length = smb2_read_data_length,
3070 .map_error = map_smb2_to_linux_error,
3071 .find_mid = smb2_find_mid,
3072 .check_message = smb2_check_message,
3073 .dump_detail = smb2_dump_detail,
3074 .clear_stats = smb2_clear_stats,
3075 .print_stats = smb2_print_stats,
3076 .dump_share_caps = smb2_dump_share_caps,
3077 .is_oplock_break = smb2_is_valid_oplock_break,
3078 .handle_cancelled_mid = smb2_handle_cancelled_mid,
3079 .downgrade_oplock = smb3_downgrade_oplock,
3080 .need_neg = smb2_need_neg,
3081 .negotiate = smb2_negotiate,
3082 .negotiate_wsize = smb2_negotiate_wsize,
3083 .negotiate_rsize = smb2_negotiate_rsize,
3084 .sess_setup = SMB2_sess_setup,
3085 .logoff = SMB2_logoff,
3086 .tree_connect = SMB2_tcon,
3087 .tree_disconnect = SMB2_tdis,
3088 .qfs_tcon = smb3_qfs_tcon,
3089 .is_path_accessible = smb2_is_path_accessible,
3090 .can_echo = smb2_can_echo,
3092 .query_path_info = smb2_query_path_info,
3093 .get_srv_inum = smb2_get_srv_inum,
3094 .query_file_info = smb2_query_file_info,
3095 .set_path_size = smb2_set_path_size,
3096 .set_file_size = smb2_set_file_size,
3097 .set_file_info = smb2_set_file_info,
3098 .set_compression = smb2_set_compression,
3099 .mkdir = smb2_mkdir,
3100 .mkdir_setinfo = smb2_mkdir_setinfo,
3101 .rmdir = smb2_rmdir,
3102 .unlink = smb2_unlink,
3103 .rename = smb2_rename_path,
3104 .create_hardlink = smb2_create_hardlink,
3105 .query_symlink = smb2_query_symlink,
3106 .query_mf_symlink = smb3_query_mf_symlink,
3107 .create_mf_symlink = smb3_create_mf_symlink,
3108 .open = smb2_open_file,
3109 .set_fid = smb2_set_fid,
3110 .close = smb2_close_file,
3111 .flush = smb2_flush_file,
3112 .async_readv = smb2_async_readv,
3113 .async_writev = smb2_async_writev,
3114 .sync_read = smb2_sync_read,
3115 .sync_write = smb2_sync_write,
3116 .query_dir_first = smb2_query_dir_first,
3117 .query_dir_next = smb2_query_dir_next,
3118 .close_dir = smb2_close_dir,
3119 .calc_smb_size = smb2_calc_size,
3120 .is_status_pending = smb2_is_status_pending,
3121 .is_session_expired = smb2_is_session_expired,
3122 .oplock_response = smb2_oplock_response,
3123 .queryfs = smb2_queryfs,
3124 .mand_lock = smb2_mand_lock,
3125 .mand_unlock_range = smb2_unlock_range,
3126 .push_mand_locks = smb2_push_mandatory_locks,
3127 .get_lease_key = smb2_get_lease_key,
3128 .set_lease_key = smb2_set_lease_key,
3129 .new_lease_key = smb2_new_lease_key,
3130 .generate_signingkey = generate_smb30signingkey,
3131 .calc_signature = smb3_calc_signature,
3132 .set_integrity = smb3_set_integrity,
3133 .is_read_op = smb21_is_read_op,
3134 .set_oplock_level = smb3_set_oplock_level,
3135 .create_lease_buf = smb3_create_lease_buf,
3136 .parse_lease_buf = smb3_parse_lease_buf,
3137 .copychunk_range = smb2_copychunk_range,
3138 .duplicate_extents = smb2_duplicate_extents,
3139 .validate_negotiate = smb3_validate_negotiate,
3140 .wp_retry_size = smb2_wp_retry_size,
3141 .dir_needs_close = smb2_dir_needs_close,
3142 .fallocate = smb3_fallocate,
3143 .enum_snapshots = smb3_enum_snapshots,
3144 .init_transform_rq = smb3_init_transform_rq,
3145 .free_transform_rq = smb3_free_transform_rq,
3146 .is_transform_hdr = smb3_is_transform_hdr,
3147 .receive_transform = smb3_receive_transform,
3148 .get_dfs_refer = smb2_get_dfs_refer,
3149 .select_sectype = smb2_select_sectype,
3150 #ifdef CONFIG_CIFS_XATTR
3151 .query_all_EAs = smb2_query_eas,
3152 .set_EA = smb2_set_ea,
3153 #endif /* CIFS_XATTR */
3154 #ifdef CONFIG_CIFS_ACL
3155 .get_acl = get_smb2_acl,
3156 .get_acl_by_fid = get_smb2_acl_by_fid,
3157 .set_acl = set_smb2_acl,
3158 #endif /* CIFS_ACL */
3161 #ifdef CONFIG_CIFS_SMB311
3162 struct smb_version_operations smb311_operations = {
3163 .compare_fids = smb2_compare_fids,
3164 .setup_request = smb2_setup_request,
3165 .setup_async_request = smb2_setup_async_request,
3166 .check_receive = smb2_check_receive,
3167 .add_credits = smb2_add_credits,
3168 .set_credits = smb2_set_credits,
3169 .get_credits_field = smb2_get_credits_field,
3170 .get_credits = smb2_get_credits,
3171 .wait_mtu_credits = smb2_wait_mtu_credits,
3172 .get_next_mid = smb2_get_next_mid,
3173 .read_data_offset = smb2_read_data_offset,
3174 .read_data_length = smb2_read_data_length,
3175 .map_error = map_smb2_to_linux_error,
3176 .find_mid = smb2_find_mid,
3177 .check_message = smb2_check_message,
3178 .dump_detail = smb2_dump_detail,
3179 .clear_stats = smb2_clear_stats,
3180 .print_stats = smb2_print_stats,
3181 .dump_share_caps = smb2_dump_share_caps,
3182 .is_oplock_break = smb2_is_valid_oplock_break,
3183 .handle_cancelled_mid = smb2_handle_cancelled_mid,
3184 .downgrade_oplock = smb3_downgrade_oplock,
3185 .need_neg = smb2_need_neg,
3186 .negotiate = smb2_negotiate,
3187 .negotiate_wsize = smb2_negotiate_wsize,
3188 .negotiate_rsize = smb2_negotiate_rsize,
3189 .sess_setup = SMB2_sess_setup,
3190 .logoff = SMB2_logoff,
3191 .tree_connect = SMB2_tcon,
3192 .tree_disconnect = SMB2_tdis,
3193 .qfs_tcon = smb3_qfs_tcon,
3194 .is_path_accessible = smb2_is_path_accessible,
3195 .can_echo = smb2_can_echo,
3197 .query_path_info = smb2_query_path_info,
3198 .get_srv_inum = smb2_get_srv_inum,
3199 .query_file_info = smb2_query_file_info,
3200 .set_path_size = smb2_set_path_size,
3201 .set_file_size = smb2_set_file_size,
3202 .set_file_info = smb2_set_file_info,
3203 .set_compression = smb2_set_compression,
3204 .mkdir = smb2_mkdir,
3205 .mkdir_setinfo = smb2_mkdir_setinfo,
3206 .rmdir = smb2_rmdir,
3207 .unlink = smb2_unlink,
3208 .rename = smb2_rename_path,
3209 .create_hardlink = smb2_create_hardlink,
3210 .query_symlink = smb2_query_symlink,
3211 .query_mf_symlink = smb3_query_mf_symlink,
3212 .create_mf_symlink = smb3_create_mf_symlink,
3213 .open = smb2_open_file,
3214 .set_fid = smb2_set_fid,
3215 .close = smb2_close_file,
3216 .flush = smb2_flush_file,
3217 .async_readv = smb2_async_readv,
3218 .async_writev = smb2_async_writev,
3219 .sync_read = smb2_sync_read,
3220 .sync_write = smb2_sync_write,
3221 .query_dir_first = smb2_query_dir_first,
3222 .query_dir_next = smb2_query_dir_next,
3223 .close_dir = smb2_close_dir,
3224 .calc_smb_size = smb2_calc_size,
3225 .is_status_pending = smb2_is_status_pending,
3226 .is_session_expired = smb2_is_session_expired,
3227 .oplock_response = smb2_oplock_response,
3228 .queryfs = smb2_queryfs,
3229 .mand_lock = smb2_mand_lock,
3230 .mand_unlock_range = smb2_unlock_range,
3231 .push_mand_locks = smb2_push_mandatory_locks,
3232 .get_lease_key = smb2_get_lease_key,
3233 .set_lease_key = smb2_set_lease_key,
3234 .new_lease_key = smb2_new_lease_key,
3235 .generate_signingkey = generate_smb311signingkey,
3236 .calc_signature = smb3_calc_signature,
3237 .set_integrity = smb3_set_integrity,
3238 .is_read_op = smb21_is_read_op,
3239 .set_oplock_level = smb3_set_oplock_level,
3240 .create_lease_buf = smb3_create_lease_buf,
3241 .parse_lease_buf = smb3_parse_lease_buf,
3242 .copychunk_range = smb2_copychunk_range,
3243 .duplicate_extents = smb2_duplicate_extents,
3244 /* .validate_negotiate = smb3_validate_negotiate, */ /* not used in 3.11 */
3245 .wp_retry_size = smb2_wp_retry_size,
3246 .dir_needs_close = smb2_dir_needs_close,
3247 .fallocate = smb3_fallocate,
3248 .enum_snapshots = smb3_enum_snapshots,
3249 .init_transform_rq = smb3_init_transform_rq,
3250 .free_transform_rq = smb3_free_transform_rq,
3251 .is_transform_hdr = smb3_is_transform_hdr,
3252 .receive_transform = smb3_receive_transform,
3253 .get_dfs_refer = smb2_get_dfs_refer,
3254 .select_sectype = smb2_select_sectype,
3255 #ifdef CONFIG_CIFS_XATTR
3256 .query_all_EAs = smb2_query_eas,
3257 .set_EA = smb2_set_ea,
3258 #endif /* CIFS_XATTR */
3260 #endif /* CIFS_SMB311 */
3262 struct smb_version_values smb20_values = {
3263 .version_string = SMB20_VERSION_STRING,
3264 .protocol_id = SMB20_PROT_ID,
3265 .req_capabilities = 0, /* MBZ */
3266 .large_lock_type = 0,
3267 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
3268 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
3269 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
3270 .header_size = sizeof(struct smb2_hdr),
3271 .max_header_size = MAX_SMB2_HDR_SIZE,
3272 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
3273 .lock_cmd = SMB2_LOCK,
3275 .cap_nt_find = SMB2_NT_FIND,
3276 .cap_large_files = SMB2_LARGE_FILES,
3277 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
3278 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
3279 .create_lease_size = sizeof(struct create_lease),
3282 struct smb_version_values smb21_values = {
3283 .version_string = SMB21_VERSION_STRING,
3284 .protocol_id = SMB21_PROT_ID,
3285 .req_capabilities = 0, /* MBZ on negotiate req until SMB3 dialect */
3286 .large_lock_type = 0,
3287 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
3288 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
3289 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
3290 .header_size = sizeof(struct smb2_hdr),
3291 .max_header_size = MAX_SMB2_HDR_SIZE,
3292 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
3293 .lock_cmd = SMB2_LOCK,
3295 .cap_nt_find = SMB2_NT_FIND,
3296 .cap_large_files = SMB2_LARGE_FILES,
3297 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
3298 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
3299 .create_lease_size = sizeof(struct create_lease),
3302 struct smb_version_values smb3any_values = {
3303 .version_string = SMB3ANY_VERSION_STRING,
3304 .protocol_id = SMB302_PROT_ID, /* doesn't matter, send protocol array */
3305 .req_capabilities = SMB2_GLOBAL_CAP_DFS | SMB2_GLOBAL_CAP_LEASING | SMB2_GLOBAL_CAP_LARGE_MTU | SMB2_GLOBAL_CAP_PERSISTENT_HANDLES | SMB2_GLOBAL_CAP_ENCRYPTION | SMB2_GLOBAL_CAP_DIRECTORY_LEASING,
3306 .large_lock_type = 0,
3307 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
3308 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
3309 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
3310 .header_size = sizeof(struct smb2_hdr),
3311 .max_header_size = MAX_SMB2_HDR_SIZE,
3312 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
3313 .lock_cmd = SMB2_LOCK,
3315 .cap_nt_find = SMB2_NT_FIND,
3316 .cap_large_files = SMB2_LARGE_FILES,
3317 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
3318 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
3319 .create_lease_size = sizeof(struct create_lease_v2),
3322 struct smb_version_values smbdefault_values = {
3323 .version_string = SMBDEFAULT_VERSION_STRING,
3324 .protocol_id = SMB302_PROT_ID, /* doesn't matter, send protocol array */
3325 .req_capabilities = SMB2_GLOBAL_CAP_DFS | SMB2_GLOBAL_CAP_LEASING | SMB2_GLOBAL_CAP_LARGE_MTU | SMB2_GLOBAL_CAP_PERSISTENT_HANDLES | SMB2_GLOBAL_CAP_ENCRYPTION | SMB2_GLOBAL_CAP_DIRECTORY_LEASING,
3326 .large_lock_type = 0,
3327 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
3328 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
3329 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
3330 .header_size = sizeof(struct smb2_hdr),
3331 .max_header_size = MAX_SMB2_HDR_SIZE,
3332 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
3333 .lock_cmd = SMB2_LOCK,
3335 .cap_nt_find = SMB2_NT_FIND,
3336 .cap_large_files = SMB2_LARGE_FILES,
3337 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
3338 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
3339 .create_lease_size = sizeof(struct create_lease_v2),
3342 struct smb_version_values smb30_values = {
3343 .version_string = SMB30_VERSION_STRING,
3344 .protocol_id = SMB30_PROT_ID,
3345 .req_capabilities = SMB2_GLOBAL_CAP_DFS | SMB2_GLOBAL_CAP_LEASING | SMB2_GLOBAL_CAP_LARGE_MTU | SMB2_GLOBAL_CAP_PERSISTENT_HANDLES | SMB2_GLOBAL_CAP_ENCRYPTION | SMB2_GLOBAL_CAP_DIRECTORY_LEASING,
3346 .large_lock_type = 0,
3347 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
3348 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
3349 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
3350 .header_size = sizeof(struct smb2_hdr),
3351 .max_header_size = MAX_SMB2_HDR_SIZE,
3352 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
3353 .lock_cmd = SMB2_LOCK,
3355 .cap_nt_find = SMB2_NT_FIND,
3356 .cap_large_files = SMB2_LARGE_FILES,
3357 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
3358 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
3359 .create_lease_size = sizeof(struct create_lease_v2),
3362 struct smb_version_values smb302_values = {
3363 .version_string = SMB302_VERSION_STRING,
3364 .protocol_id = SMB302_PROT_ID,
3365 .req_capabilities = SMB2_GLOBAL_CAP_DFS | SMB2_GLOBAL_CAP_LEASING | SMB2_GLOBAL_CAP_LARGE_MTU | SMB2_GLOBAL_CAP_PERSISTENT_HANDLES | SMB2_GLOBAL_CAP_ENCRYPTION | SMB2_GLOBAL_CAP_DIRECTORY_LEASING,
3366 .large_lock_type = 0,
3367 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
3368 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
3369 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
3370 .header_size = sizeof(struct smb2_hdr),
3371 .max_header_size = MAX_SMB2_HDR_SIZE,
3372 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
3373 .lock_cmd = SMB2_LOCK,
3375 .cap_nt_find = SMB2_NT_FIND,
3376 .cap_large_files = SMB2_LARGE_FILES,
3377 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
3378 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
3379 .create_lease_size = sizeof(struct create_lease_v2),
3382 #ifdef CONFIG_CIFS_SMB311
3383 struct smb_version_values smb311_values = {
3384 .version_string = SMB311_VERSION_STRING,
3385 .protocol_id = SMB311_PROT_ID,
3386 .req_capabilities = SMB2_GLOBAL_CAP_DFS | SMB2_GLOBAL_CAP_LEASING | SMB2_GLOBAL_CAP_LARGE_MTU | SMB2_GLOBAL_CAP_PERSISTENT_HANDLES | SMB2_GLOBAL_CAP_ENCRYPTION | SMB2_GLOBAL_CAP_DIRECTORY_LEASING,
3387 .large_lock_type = 0,
3388 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
3389 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
3390 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
3391 .header_size = sizeof(struct smb2_hdr),
3392 .max_header_size = MAX_SMB2_HDR_SIZE,
3393 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
3394 .lock_cmd = SMB2_LOCK,
3396 .cap_nt_find = SMB2_NT_FIND,
3397 .cap_large_files = SMB2_LARGE_FILES,
3398 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
3399 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
3400 .create_lease_size = sizeof(struct create_lease_v2),