2 * SMB2 version specific operations
4 * Copyright (c) 2012, Jeff Layton <jlayton@redhat.com>
6 * This library is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License v2 as published
8 * by the Free Software Foundation.
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
13 * the GNU Lesser General Public License for more details.
15 * You should have received a copy of the GNU Lesser General Public License
16 * along with this library; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 #include <linux/pagemap.h>
21 #include <linux/vfs.h>
22 #include <linux/falloc.h>
23 #include <linux/scatterlist.h>
24 #include <linux/uuid.h>
25 #include <crypto/aead.h>
28 #include "smb2proto.h"
29 #include "cifsproto.h"
30 #include "cifs_debug.h"
31 #include "cifs_unicode.h"
32 #include "smb2status.h"
34 #include "cifs_ioctl.h"
35 #include "smbdirect.h"
38 change_conf(struct TCP_Server_Info *server)
40 server->credits += server->echo_credits + server->oplock_credits;
41 server->oplock_credits = server->echo_credits = 0;
42 switch (server->credits) {
46 server->echoes = false;
47 server->oplocks = false;
48 cifs_dbg(VFS, "disabling echoes and oplocks\n");
51 server->echoes = true;
52 server->oplocks = false;
53 server->echo_credits = 1;
54 cifs_dbg(FYI, "disabling oplocks\n");
57 server->echoes = true;
59 server->oplocks = true;
60 server->oplock_credits = 1;
62 server->oplocks = false;
64 server->echo_credits = 1;
66 server->credits -= server->echo_credits + server->oplock_credits;
71 smb2_add_credits(struct TCP_Server_Info *server, const unsigned int add,
75 spin_lock(&server->req_lock);
76 val = server->ops->get_credits_field(server, optype);
78 /* eg found case where write overlapping reconnect messed up credits */
79 if (((optype & CIFS_OP_MASK) == CIFS_NEG_OP) && (*val != 0))
80 trace_smb3_reconnect_with_invalid_credits(server->CurrentMid,
81 server->hostname, *val);
85 *val = 65000; /* Don't get near 64K credits, avoid srv bugs */
86 printk_once(KERN_WARNING "server overflowed SMB3 credits\n");
89 if (server->in_flight == 0 && (optype & CIFS_OP_MASK) != CIFS_NEG_OP)
90 rc = change_conf(server);
92 * Sometimes server returns 0 credits on oplock break ack - we need to
93 * rebalance credits in this case.
95 else if (server->in_flight > 0 && server->oplock_credits == 0 &&
97 if (server->credits > 1) {
99 server->oplock_credits++;
102 spin_unlock(&server->req_lock);
103 wake_up(&server->request_q);
105 cifs_reconnect(server);
109 smb2_set_credits(struct TCP_Server_Info *server, const int val)
111 spin_lock(&server->req_lock);
112 server->credits = val;
114 server->reconnect_instance++;
115 spin_unlock(&server->req_lock);
116 /* don't log while holding the lock */
118 cifs_dbg(FYI, "set credits to 1 due to smb2 reconnect\n");
122 smb2_get_credits_field(struct TCP_Server_Info *server, const int optype)
126 return &server->echo_credits;
128 return &server->oplock_credits;
130 return &server->credits;
135 smb2_get_credits(struct mid_q_entry *mid)
137 struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)mid->resp_buf;
139 return le16_to_cpu(shdr->CreditRequest);
143 smb2_wait_mtu_credits(struct TCP_Server_Info *server, unsigned int size,
144 unsigned int *num, unsigned int *credits)
147 unsigned int scredits;
149 spin_lock(&server->req_lock);
151 if (server->credits <= 0) {
152 spin_unlock(&server->req_lock);
153 cifs_num_waiters_inc(server);
154 rc = wait_event_killable(server->request_q,
155 has_credits(server, &server->credits));
156 cifs_num_waiters_dec(server);
159 spin_lock(&server->req_lock);
161 if (server->tcpStatus == CifsExiting) {
162 spin_unlock(&server->req_lock);
166 scredits = server->credits;
167 /* can deadlock with reopen */
169 *num = SMB2_MAX_BUFFER_SIZE;
174 /* leave one credit for a possible reopen */
176 *num = min_t(unsigned int, size,
177 scredits * SMB2_MAX_BUFFER_SIZE);
179 *credits = DIV_ROUND_UP(*num, SMB2_MAX_BUFFER_SIZE);
180 server->credits -= *credits;
185 spin_unlock(&server->req_lock);
190 smb2_get_next_mid(struct TCP_Server_Info *server)
193 /* for SMB2 we need the current value */
194 spin_lock(&GlobalMid_Lock);
195 mid = server->CurrentMid++;
196 spin_unlock(&GlobalMid_Lock);
200 static struct mid_q_entry *
201 smb2_find_mid(struct TCP_Server_Info *server, char *buf)
203 struct mid_q_entry *mid;
204 struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)buf;
205 __u64 wire_mid = le64_to_cpu(shdr->MessageId);
207 if (shdr->ProtocolId == SMB2_TRANSFORM_PROTO_NUM) {
208 cifs_dbg(VFS, "encrypted frame parsing not supported yet");
212 spin_lock(&GlobalMid_Lock);
213 list_for_each_entry(mid, &server->pending_mid_q, qhead) {
214 if ((mid->mid == wire_mid) &&
215 (mid->mid_state == MID_REQUEST_SUBMITTED) &&
216 (mid->command == shdr->Command)) {
217 kref_get(&mid->refcount);
218 spin_unlock(&GlobalMid_Lock);
222 spin_unlock(&GlobalMid_Lock);
227 smb2_dump_detail(void *buf, struct TCP_Server_Info *server)
229 #ifdef CONFIG_CIFS_DEBUG2
230 struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)buf;
232 cifs_dbg(VFS, "Cmd: %d Err: 0x%x Flags: 0x%x Mid: %llu Pid: %d\n",
233 shdr->Command, shdr->Status, shdr->Flags, shdr->MessageId,
235 cifs_dbg(VFS, "smb buf %p len %u\n", buf,
236 server->ops->calc_smb_size(buf, server));
241 smb2_need_neg(struct TCP_Server_Info *server)
243 return server->max_read == 0;
247 smb2_negotiate(const unsigned int xid, struct cifs_ses *ses)
250 ses->server->CurrentMid = 0;
251 rc = SMB2_negotiate(xid, ses);
252 /* BB we probably don't need to retry with modern servers */
259 smb2_negotiate_wsize(struct cifs_tcon *tcon, struct smb_vol *volume_info)
261 struct TCP_Server_Info *server = tcon->ses->server;
264 /* start with specified wsize, or default */
265 wsize = volume_info->wsize ? volume_info->wsize : CIFS_DEFAULT_IOSIZE;
266 wsize = min_t(unsigned int, wsize, server->max_write);
267 #ifdef CONFIG_CIFS_SMB_DIRECT
270 wsize = min_t(unsigned int,
271 wsize, server->smbd_conn->max_fragmented_send_size);
273 wsize = min_t(unsigned int,
274 wsize, server->smbd_conn->max_readwrite_size);
277 if (!(server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU))
278 wsize = min_t(unsigned int, wsize, SMB2_MAX_BUFFER_SIZE);
284 smb3_negotiate_wsize(struct cifs_tcon *tcon, struct smb_vol *volume_info)
286 struct TCP_Server_Info *server = tcon->ses->server;
289 /* start with specified wsize, or default */
290 wsize = volume_info->wsize ? volume_info->wsize : SMB3_DEFAULT_IOSIZE;
291 wsize = min_t(unsigned int, wsize, server->max_write);
292 #ifdef CONFIG_CIFS_SMB_DIRECT
295 wsize = min_t(unsigned int,
296 wsize, server->smbd_conn->max_fragmented_send_size);
298 wsize = min_t(unsigned int,
299 wsize, server->smbd_conn->max_readwrite_size);
302 if (!(server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU))
303 wsize = min_t(unsigned int, wsize, SMB2_MAX_BUFFER_SIZE);
309 smb2_negotiate_rsize(struct cifs_tcon *tcon, struct smb_vol *volume_info)
311 struct TCP_Server_Info *server = tcon->ses->server;
314 /* start with specified rsize, or default */
315 rsize = volume_info->rsize ? volume_info->rsize : CIFS_DEFAULT_IOSIZE;
316 rsize = min_t(unsigned int, rsize, server->max_read);
317 #ifdef CONFIG_CIFS_SMB_DIRECT
320 rsize = min_t(unsigned int,
321 rsize, server->smbd_conn->max_fragmented_recv_size);
323 rsize = min_t(unsigned int,
324 rsize, server->smbd_conn->max_readwrite_size);
328 if (!(server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU))
329 rsize = min_t(unsigned int, rsize, SMB2_MAX_BUFFER_SIZE);
335 smb3_negotiate_rsize(struct cifs_tcon *tcon, struct smb_vol *volume_info)
337 struct TCP_Server_Info *server = tcon->ses->server;
340 /* start with specified rsize, or default */
341 rsize = volume_info->rsize ? volume_info->rsize : SMB3_DEFAULT_IOSIZE;
342 rsize = min_t(unsigned int, rsize, server->max_read);
343 #ifdef CONFIG_CIFS_SMB_DIRECT
346 rsize = min_t(unsigned int,
347 rsize, server->smbd_conn->max_fragmented_recv_size);
349 rsize = min_t(unsigned int,
350 rsize, server->smbd_conn->max_readwrite_size);
354 if (!(server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU))
355 rsize = min_t(unsigned int, rsize, SMB2_MAX_BUFFER_SIZE);
361 parse_server_interfaces(struct network_interface_info_ioctl_rsp *buf,
363 struct cifs_server_iface **iface_list,
366 struct network_interface_info_ioctl_rsp *p;
367 struct sockaddr_in *addr4;
368 struct sockaddr_in6 *addr6;
369 struct iface_info_ipv4 *p4;
370 struct iface_info_ipv6 *p6;
371 struct cifs_server_iface *info;
381 * Fist pass: count and sanity check
384 bytes_left = buf_len;
386 while (bytes_left >= sizeof(*p)) {
388 next = le32_to_cpu(p->Next);
390 bytes_left -= sizeof(*p);
393 p = (struct network_interface_info_ioctl_rsp *)((u8 *)p+next);
398 cifs_dbg(VFS, "%s: malformed interface info\n", __func__);
403 if (bytes_left || p->Next)
404 cifs_dbg(VFS, "%s: incomplete interface info\n", __func__);
408 * Second pass: extract info to internal structure
411 *iface_list = kcalloc(nb_iface, sizeof(**iface_list), GFP_KERNEL);
418 bytes_left = buf_len;
420 while (bytes_left >= sizeof(*p)) {
421 info->speed = le64_to_cpu(p->LinkSpeed);
422 info->rdma_capable = le32_to_cpu(p->Capability & RDMA_CAPABLE);
423 info->rss_capable = le32_to_cpu(p->Capability & RSS_CAPABLE);
425 cifs_dbg(FYI, "%s: adding iface %zu\n", __func__, *iface_count);
426 cifs_dbg(FYI, "%s: speed %zu bps\n", __func__, info->speed);
427 cifs_dbg(FYI, "%s: capabilities 0x%08x\n", __func__,
428 le32_to_cpu(p->Capability));
432 * The kernel and wire socket structures have the same
433 * layout and use network byte order but make the
434 * conversion explicit in case either one changes.
437 addr4 = (struct sockaddr_in *)&info->sockaddr;
438 p4 = (struct iface_info_ipv4 *)p->Buffer;
439 addr4->sin_family = AF_INET;
440 memcpy(&addr4->sin_addr, &p4->IPv4Address, 4);
442 /* [MS-SMB2] 2.2.32.5.1.1 Clients MUST ignore these */
443 addr4->sin_port = cpu_to_be16(CIFS_PORT);
445 cifs_dbg(FYI, "%s: ipv4 %pI4\n", __func__,
449 addr6 = (struct sockaddr_in6 *)&info->sockaddr;
450 p6 = (struct iface_info_ipv6 *)p->Buffer;
451 addr6->sin6_family = AF_INET6;
452 memcpy(&addr6->sin6_addr, &p6->IPv6Address, 16);
454 /* [MS-SMB2] 2.2.32.5.1.2 Clients MUST ignore these */
455 addr6->sin6_flowinfo = 0;
456 addr6->sin6_scope_id = 0;
457 addr6->sin6_port = cpu_to_be16(CIFS_PORT);
459 cifs_dbg(FYI, "%s: ipv6 %pI6\n", __func__,
464 "%s: skipping unsupported socket family\n",
472 next = le32_to_cpu(p->Next);
475 p = (struct network_interface_info_ioctl_rsp *)((u8 *)p+next);
495 SMB3_request_interfaces(const unsigned int xid, struct cifs_tcon *tcon)
498 unsigned int ret_data_len = 0;
499 struct network_interface_info_ioctl_rsp *out_buf = NULL;
500 struct cifs_server_iface *iface_list;
502 struct cifs_ses *ses = tcon->ses;
504 rc = SMB2_ioctl(xid, tcon, NO_FILE_ID, NO_FILE_ID,
505 FSCTL_QUERY_NETWORK_INTERFACE_INFO, true /* is_fsctl */,
506 NULL /* no data input */, 0 /* no data input */,
507 (char **)&out_buf, &ret_data_len);
508 if (rc == -EOPNOTSUPP) {
510 "server does not support query network interfaces\n");
512 } else if (rc != 0) {
513 cifs_dbg(VFS, "error %d on ioctl to get interface list\n", rc);
517 rc = parse_server_interfaces(out_buf, ret_data_len,
518 &iface_list, &iface_count);
522 spin_lock(&ses->iface_lock);
523 kfree(ses->iface_list);
524 ses->iface_list = iface_list;
525 ses->iface_count = iface_count;
526 ses->iface_last_update = jiffies;
527 spin_unlock(&ses->iface_lock);
535 smb2_close_cached_fid(struct kref *ref)
537 struct cached_fid *cfid = container_of(ref, struct cached_fid,
540 if (cfid->is_valid) {
541 cifs_dbg(FYI, "clear cached root file handle\n");
542 SMB2_close(0, cfid->tcon, cfid->fid->persistent_fid,
543 cfid->fid->volatile_fid);
544 cfid->is_valid = false;
548 void close_shroot(struct cached_fid *cfid)
550 mutex_lock(&cfid->fid_mutex);
551 kref_put(&cfid->refcount, smb2_close_cached_fid);
552 mutex_unlock(&cfid->fid_mutex);
556 smb2_cached_lease_break(struct work_struct *work)
558 struct cached_fid *cfid = container_of(work,
559 struct cached_fid, lease_break);
565 * Open the directory at the root of a share
567 int open_shroot(unsigned int xid, struct cifs_tcon *tcon, struct cifs_fid *pfid)
569 struct cifs_open_parms oparams;
571 __le16 srch_path = 0; /* Null - since an open of top of share */
572 u8 oplock = SMB2_OPLOCK_LEVEL_II;
574 mutex_lock(&tcon->crfid.fid_mutex);
575 if (tcon->crfid.is_valid) {
576 cifs_dbg(FYI, "found a cached root file handle\n");
577 memcpy(pfid, tcon->crfid.fid, sizeof(struct cifs_fid));
578 kref_get(&tcon->crfid.refcount);
579 mutex_unlock(&tcon->crfid.fid_mutex);
584 oparams.create_options = 0;
585 oparams.desired_access = FILE_READ_ATTRIBUTES;
586 oparams.disposition = FILE_OPEN;
588 oparams.reconnect = false;
590 rc = SMB2_open(xid, &oparams, &srch_path, &oplock, NULL, NULL, NULL);
592 memcpy(tcon->crfid.fid, pfid, sizeof(struct cifs_fid));
593 tcon->crfid.tcon = tcon;
594 tcon->crfid.is_valid = true;
595 kref_init(&tcon->crfid.refcount);
596 kref_get(&tcon->crfid.refcount);
598 mutex_unlock(&tcon->crfid.fid_mutex);
603 smb3_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon)
606 __le16 srch_path = 0; /* Null - open root of share */
607 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
608 struct cifs_open_parms oparms;
610 bool no_cached_open = tcon->nohandlecache;
613 oparms.desired_access = FILE_READ_ATTRIBUTES;
614 oparms.disposition = FILE_OPEN;
615 oparms.create_options = 0;
617 oparms.reconnect = false;
620 rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL,
623 rc = open_shroot(xid, tcon, &fid);
628 SMB3_request_interfaces(xid, tcon);
630 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
631 FS_ATTRIBUTE_INFORMATION);
632 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
633 FS_DEVICE_INFORMATION);
634 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
635 FS_VOLUME_INFORMATION);
636 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
637 FS_SECTOR_SIZE_INFORMATION); /* SMB3 specific */
639 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
641 close_shroot(&tcon->crfid);
647 smb2_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon)
650 __le16 srch_path = 0; /* Null - open root of share */
651 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
652 struct cifs_open_parms oparms;
656 oparms.desired_access = FILE_READ_ATTRIBUTES;
657 oparms.disposition = FILE_OPEN;
658 oparms.create_options = 0;
660 oparms.reconnect = false;
662 rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL, NULL);
666 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
667 FS_ATTRIBUTE_INFORMATION);
668 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
669 FS_DEVICE_INFORMATION);
670 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
675 smb2_is_path_accessible(const unsigned int xid, struct cifs_tcon *tcon,
676 struct cifs_sb_info *cifs_sb, const char *full_path)
680 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
681 struct cifs_open_parms oparms;
684 if ((*full_path == 0) && tcon->crfid.is_valid)
687 utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb);
692 oparms.desired_access = FILE_READ_ATTRIBUTES;
693 oparms.disposition = FILE_OPEN;
694 if (backup_cred(cifs_sb))
695 oparms.create_options = CREATE_OPEN_BACKUP_INTENT;
697 oparms.create_options = 0;
699 oparms.reconnect = false;
701 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL, NULL);
707 rc = SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
713 smb2_get_srv_inum(const unsigned int xid, struct cifs_tcon *tcon,
714 struct cifs_sb_info *cifs_sb, const char *full_path,
715 u64 *uniqueid, FILE_ALL_INFO *data)
717 *uniqueid = le64_to_cpu(data->IndexNumber);
722 smb2_query_file_info(const unsigned int xid, struct cifs_tcon *tcon,
723 struct cifs_fid *fid, FILE_ALL_INFO *data)
726 struct smb2_file_all_info *smb2_data;
728 smb2_data = kzalloc(sizeof(struct smb2_file_all_info) + PATH_MAX * 2,
730 if (smb2_data == NULL)
733 rc = SMB2_query_info(xid, tcon, fid->persistent_fid, fid->volatile_fid,
736 move_smb2_info_to_cifs(data, smb2_data);
741 #ifdef CONFIG_CIFS_XATTR
743 move_smb2_ea_to_cifs(char *dst, size_t dst_size,
744 struct smb2_file_full_ea_info *src, size_t src_size,
745 const unsigned char *ea_name)
748 unsigned int ea_name_len = ea_name ? strlen(ea_name) : 0;
750 size_t buf_size = dst_size;
751 size_t name_len, value_len, user_name_len;
753 while (src_size > 0) {
754 name = &src->ea_data[0];
755 name_len = (size_t)src->ea_name_length;
756 value = &src->ea_data[src->ea_name_length + 1];
757 value_len = (size_t)le16_to_cpu(src->ea_value_length);
763 if (src_size < 8 + name_len + 1 + value_len) {
764 cifs_dbg(FYI, "EA entry goes beyond length of list\n");
770 if (ea_name_len == name_len &&
771 memcmp(ea_name, name, name_len) == 0) {
775 if (dst_size < value_len) {
779 memcpy(dst, value, value_len);
783 /* 'user.' plus a terminating null */
784 user_name_len = 5 + 1 + name_len;
787 /* skip copy - calc size only */
789 } else if (dst_size >= user_name_len) {
790 dst_size -= user_name_len;
791 memcpy(dst, "user.", 5);
793 memcpy(dst, src->ea_data, name_len);
799 /* stop before overrun buffer */
805 if (!src->next_entry_offset)
808 if (src_size < le32_to_cpu(src->next_entry_offset)) {
809 /* stop before overrun buffer */
813 src_size -= le32_to_cpu(src->next_entry_offset);
814 src = (void *)((char *)src +
815 le32_to_cpu(src->next_entry_offset));
818 /* didn't find the named attribute */
827 smb2_query_eas(const unsigned int xid, struct cifs_tcon *tcon,
828 const unsigned char *path, const unsigned char *ea_name,
829 char *ea_data, size_t buf_size,
830 struct cifs_sb_info *cifs_sb)
834 struct kvec rsp_iov = {NULL, 0};
835 int buftype = CIFS_NO_BUFFER;
836 struct smb2_query_info_rsp *rsp;
837 struct smb2_file_full_ea_info *info = NULL;
839 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
843 rc = smb2_query_info_compound(xid, tcon, utf16_path,
845 FILE_FULL_EA_INFORMATION,
848 &rsp_iov, &buftype, cifs_sb);
851 * If ea_name is NULL (listxattr) and there are no EAs,
852 * return 0 as it's not an error. Otherwise, the specified
853 * ea_name was not found.
855 if (!ea_name && rc == -ENODATA)
860 rsp = (struct smb2_query_info_rsp *)rsp_iov.iov_base;
861 rc = smb2_validate_iov(le16_to_cpu(rsp->OutputBufferOffset),
862 le32_to_cpu(rsp->OutputBufferLength),
864 sizeof(struct smb2_file_full_ea_info));
868 info = (struct smb2_file_full_ea_info *)(
869 le16_to_cpu(rsp->OutputBufferOffset) + (char *)rsp);
870 rc = move_smb2_ea_to_cifs(ea_data, buf_size, info,
871 le32_to_cpu(rsp->OutputBufferLength), ea_name);
875 free_rsp_buf(buftype, rsp_iov.iov_base);
881 smb2_set_ea(const unsigned int xid, struct cifs_tcon *tcon,
882 const char *path, const char *ea_name, const void *ea_value,
883 const __u16 ea_value_len, const struct nls_table *nls_codepage,
884 struct cifs_sb_info *cifs_sb)
886 struct cifs_ses *ses = tcon->ses;
887 __le16 *utf16_path = NULL;
888 int ea_name_len = strlen(ea_name);
891 struct smb_rqst rqst[3];
893 struct kvec rsp_iov[3];
894 struct kvec open_iov[SMB2_CREATE_IOV_SIZE];
895 struct cifs_open_parms oparms;
896 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
898 struct kvec si_iov[SMB2_SET_INFO_IOV_SIZE];
899 unsigned int size[1];
901 struct smb2_file_full_ea_info *ea = NULL;
902 struct kvec close_iov[1];
905 if (smb3_encryption_required(tcon))
906 flags |= CIFS_TRANSFORM_REQ;
908 if (ea_name_len > 255)
911 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
915 memset(rqst, 0, sizeof(rqst));
916 resp_buftype[0] = resp_buftype[1] = resp_buftype[2] = CIFS_NO_BUFFER;
917 memset(rsp_iov, 0, sizeof(rsp_iov));
920 memset(&open_iov, 0, sizeof(open_iov));
921 rqst[0].rq_iov = open_iov;
922 rqst[0].rq_nvec = SMB2_CREATE_IOV_SIZE;
924 memset(&oparms, 0, sizeof(oparms));
926 oparms.desired_access = FILE_WRITE_EA;
927 oparms.disposition = FILE_OPEN;
928 if (backup_cred(cifs_sb))
929 oparms.create_options = CREATE_OPEN_BACKUP_INTENT;
931 oparms.create_options = 0;
933 oparms.reconnect = false;
935 rc = SMB2_open_init(tcon, &rqst[0], &oplock, &oparms, utf16_path);
938 smb2_set_next_command(tcon, &rqst[0]);
942 memset(&si_iov, 0, sizeof(si_iov));
943 rqst[1].rq_iov = si_iov;
946 len = sizeof(ea) + ea_name_len + ea_value_len + 1;
947 ea = kzalloc(len, GFP_KERNEL);
953 ea->ea_name_length = ea_name_len;
954 ea->ea_value_length = cpu_to_le16(ea_value_len);
955 memcpy(ea->ea_data, ea_name, ea_name_len + 1);
956 memcpy(ea->ea_data + ea_name_len + 1, ea_value, ea_value_len);
961 rc = SMB2_set_info_init(tcon, &rqst[1], COMPOUND_FID,
962 COMPOUND_FID, current->tgid,
963 FILE_FULL_EA_INFORMATION,
964 SMB2_O_INFO_FILE, 0, data, size);
965 smb2_set_next_command(tcon, &rqst[1]);
966 smb2_set_related(&rqst[1]);
970 memset(&close_iov, 0, sizeof(close_iov));
971 rqst[2].rq_iov = close_iov;
973 rc = SMB2_close_init(tcon, &rqst[2], COMPOUND_FID, COMPOUND_FID);
974 smb2_set_related(&rqst[2]);
976 rc = compound_send_recv(xid, ses, flags, 3, rqst,
977 resp_buftype, rsp_iov);
982 SMB2_open_free(&rqst[0]);
983 SMB2_set_info_free(&rqst[1]);
984 SMB2_close_free(&rqst[2]);
985 free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base);
986 free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base);
987 free_rsp_buf(resp_buftype[2], rsp_iov[2].iov_base);
993 smb2_can_echo(struct TCP_Server_Info *server)
995 return server->echoes;
999 smb2_clear_stats(struct cifs_tcon *tcon)
1002 for (i = 0; i < NUMBER_OF_SMB2_COMMANDS; i++) {
1003 atomic_set(&tcon->stats.smb2_stats.smb2_com_sent[i], 0);
1004 atomic_set(&tcon->stats.smb2_stats.smb2_com_failed[i], 0);
1009 smb2_dump_share_caps(struct seq_file *m, struct cifs_tcon *tcon)
1011 seq_puts(m, "\n\tShare Capabilities:");
1012 if (tcon->capabilities & SMB2_SHARE_CAP_DFS)
1013 seq_puts(m, " DFS,");
1014 if (tcon->capabilities & SMB2_SHARE_CAP_CONTINUOUS_AVAILABILITY)
1015 seq_puts(m, " CONTINUOUS AVAILABILITY,");
1016 if (tcon->capabilities & SMB2_SHARE_CAP_SCALEOUT)
1017 seq_puts(m, " SCALEOUT,");
1018 if (tcon->capabilities & SMB2_SHARE_CAP_CLUSTER)
1019 seq_puts(m, " CLUSTER,");
1020 if (tcon->capabilities & SMB2_SHARE_CAP_ASYMMETRIC)
1021 seq_puts(m, " ASYMMETRIC,");
1022 if (tcon->capabilities == 0)
1023 seq_puts(m, " None");
1024 if (tcon->ss_flags & SSINFO_FLAGS_ALIGNED_DEVICE)
1025 seq_puts(m, " Aligned,");
1026 if (tcon->ss_flags & SSINFO_FLAGS_PARTITION_ALIGNED_ON_DEVICE)
1027 seq_puts(m, " Partition Aligned,");
1028 if (tcon->ss_flags & SSINFO_FLAGS_NO_SEEK_PENALTY)
1029 seq_puts(m, " SSD,");
1030 if (tcon->ss_flags & SSINFO_FLAGS_TRIM_ENABLED)
1031 seq_puts(m, " TRIM-support,");
1033 seq_printf(m, "\tShare Flags: 0x%x", tcon->share_flags);
1034 seq_printf(m, "\n\ttid: 0x%x", tcon->tid);
1035 if (tcon->perf_sector_size)
1036 seq_printf(m, "\tOptimal sector size: 0x%x",
1037 tcon->perf_sector_size);
1038 seq_printf(m, "\tMaximal Access: 0x%x", tcon->maximal_access);
1042 smb2_print_stats(struct seq_file *m, struct cifs_tcon *tcon)
1044 atomic_t *sent = tcon->stats.smb2_stats.smb2_com_sent;
1045 atomic_t *failed = tcon->stats.smb2_stats.smb2_com_failed;
1048 * Can't display SMB2_NEGOTIATE, SESSION_SETUP, LOGOFF, CANCEL and ECHO
1049 * totals (requests sent) since those SMBs are per-session not per tcon
1051 seq_printf(m, "\nBytes read: %llu Bytes written: %llu",
1052 (long long)(tcon->bytes_read),
1053 (long long)(tcon->bytes_written));
1054 seq_printf(m, "\nOpen files: %d total (local), %d open on server",
1055 atomic_read(&tcon->num_local_opens),
1056 atomic_read(&tcon->num_remote_opens));
1057 seq_printf(m, "\nTreeConnects: %d total %d failed",
1058 atomic_read(&sent[SMB2_TREE_CONNECT_HE]),
1059 atomic_read(&failed[SMB2_TREE_CONNECT_HE]));
1060 seq_printf(m, "\nTreeDisconnects: %d total %d failed",
1061 atomic_read(&sent[SMB2_TREE_DISCONNECT_HE]),
1062 atomic_read(&failed[SMB2_TREE_DISCONNECT_HE]));
1063 seq_printf(m, "\nCreates: %d total %d failed",
1064 atomic_read(&sent[SMB2_CREATE_HE]),
1065 atomic_read(&failed[SMB2_CREATE_HE]));
1066 seq_printf(m, "\nCloses: %d total %d failed",
1067 atomic_read(&sent[SMB2_CLOSE_HE]),
1068 atomic_read(&failed[SMB2_CLOSE_HE]));
1069 seq_printf(m, "\nFlushes: %d total %d failed",
1070 atomic_read(&sent[SMB2_FLUSH_HE]),
1071 atomic_read(&failed[SMB2_FLUSH_HE]));
1072 seq_printf(m, "\nReads: %d total %d failed",
1073 atomic_read(&sent[SMB2_READ_HE]),
1074 atomic_read(&failed[SMB2_READ_HE]));
1075 seq_printf(m, "\nWrites: %d total %d failed",
1076 atomic_read(&sent[SMB2_WRITE_HE]),
1077 atomic_read(&failed[SMB2_WRITE_HE]));
1078 seq_printf(m, "\nLocks: %d total %d failed",
1079 atomic_read(&sent[SMB2_LOCK_HE]),
1080 atomic_read(&failed[SMB2_LOCK_HE]));
1081 seq_printf(m, "\nIOCTLs: %d total %d failed",
1082 atomic_read(&sent[SMB2_IOCTL_HE]),
1083 atomic_read(&failed[SMB2_IOCTL_HE]));
1084 seq_printf(m, "\nQueryDirectories: %d total %d failed",
1085 atomic_read(&sent[SMB2_QUERY_DIRECTORY_HE]),
1086 atomic_read(&failed[SMB2_QUERY_DIRECTORY_HE]));
1087 seq_printf(m, "\nChangeNotifies: %d total %d failed",
1088 atomic_read(&sent[SMB2_CHANGE_NOTIFY_HE]),
1089 atomic_read(&failed[SMB2_CHANGE_NOTIFY_HE]));
1090 seq_printf(m, "\nQueryInfos: %d total %d failed",
1091 atomic_read(&sent[SMB2_QUERY_INFO_HE]),
1092 atomic_read(&failed[SMB2_QUERY_INFO_HE]));
1093 seq_printf(m, "\nSetInfos: %d total %d failed",
1094 atomic_read(&sent[SMB2_SET_INFO_HE]),
1095 atomic_read(&failed[SMB2_SET_INFO_HE]));
1096 seq_printf(m, "\nOplockBreaks: %d sent %d failed",
1097 atomic_read(&sent[SMB2_OPLOCK_BREAK_HE]),
1098 atomic_read(&failed[SMB2_OPLOCK_BREAK_HE]));
1102 smb2_set_fid(struct cifsFileInfo *cfile, struct cifs_fid *fid, __u32 oplock)
1104 struct cifsInodeInfo *cinode = CIFS_I(d_inode(cfile->dentry));
1105 struct TCP_Server_Info *server = tlink_tcon(cfile->tlink)->ses->server;
1107 cfile->fid.persistent_fid = fid->persistent_fid;
1108 cfile->fid.volatile_fid = fid->volatile_fid;
1109 #ifdef CONFIG_CIFS_DEBUG2
1110 cfile->fid.mid = fid->mid;
1111 #endif /* CIFS_DEBUG2 */
1112 server->ops->set_oplock_level(cinode, oplock, fid->epoch,
1114 cinode->can_cache_brlcks = CIFS_CACHE_WRITE(cinode);
1115 memcpy(cfile->fid.create_guid, fid->create_guid, 16);
1119 smb2_close_file(const unsigned int xid, struct cifs_tcon *tcon,
1120 struct cifs_fid *fid)
1122 SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
1126 SMB2_request_res_key(const unsigned int xid, struct cifs_tcon *tcon,
1127 u64 persistent_fid, u64 volatile_fid,
1128 struct copychunk_ioctl *pcchunk)
1131 unsigned int ret_data_len;
1132 struct resume_key_req *res_key;
1134 rc = SMB2_ioctl(xid, tcon, persistent_fid, volatile_fid,
1135 FSCTL_SRV_REQUEST_RESUME_KEY, true /* is_fsctl */,
1136 NULL, 0 /* no input */,
1137 (char **)&res_key, &ret_data_len);
1140 cifs_dbg(VFS, "refcpy ioctl error %d getting resume key\n", rc);
1141 goto req_res_key_exit;
1143 if (ret_data_len < sizeof(struct resume_key_req)) {
1144 cifs_dbg(VFS, "Invalid refcopy resume key length\n");
1146 goto req_res_key_exit;
1148 memcpy(pcchunk->SourceKey, res_key->ResumeKey, COPY_CHUNK_RES_KEY_SIZE);
1156 smb2_ioctl_query_info(const unsigned int xid,
1157 struct cifs_tcon *tcon,
1158 __le16 *path, int is_dir,
1161 struct cifs_ses *ses = tcon->ses;
1162 char __user *arg = (char __user *)p;
1163 struct smb_query_info qi;
1164 struct smb_query_info __user *pqi;
1167 struct smb2_query_info_rsp *rsp = NULL;
1168 void *buffer = NULL;
1169 struct smb_rqst rqst[3];
1170 int resp_buftype[3];
1171 struct kvec rsp_iov[3];
1172 struct kvec open_iov[SMB2_CREATE_IOV_SIZE];
1173 struct cifs_open_parms oparms;
1174 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
1175 struct cifs_fid fid;
1176 struct kvec qi_iov[1];
1177 struct kvec close_iov[1];
1179 memset(rqst, 0, sizeof(rqst));
1180 resp_buftype[0] = resp_buftype[1] = resp_buftype[2] = CIFS_NO_BUFFER;
1181 memset(rsp_iov, 0, sizeof(rsp_iov));
1183 if (copy_from_user(&qi, arg, sizeof(struct smb_query_info)))
1186 if (qi.output_buffer_length > 1024)
1189 if (!ses || !(ses->server))
1192 if (smb3_encryption_required(tcon))
1193 flags |= CIFS_TRANSFORM_REQ;
1195 buffer = kmalloc(qi.output_buffer_length, GFP_KERNEL);
1199 if (copy_from_user(buffer, arg + sizeof(struct smb_query_info),
1200 qi.output_buffer_length)) {
1206 memset(&open_iov, 0, sizeof(open_iov));
1207 rqst[0].rq_iov = open_iov;
1208 rqst[0].rq_nvec = SMB2_CREATE_IOV_SIZE;
1210 memset(&oparms, 0, sizeof(oparms));
1212 oparms.desired_access = FILE_READ_ATTRIBUTES | READ_CONTROL;
1213 oparms.disposition = FILE_OPEN;
1215 oparms.create_options = CREATE_NOT_FILE;
1217 oparms.create_options = CREATE_NOT_DIR;
1219 oparms.reconnect = false;
1221 rc = SMB2_open_init(tcon, &rqst[0], &oplock, &oparms, path);
1224 smb2_set_next_command(tcon, &rqst[0]);
1227 memset(&qi_iov, 0, sizeof(qi_iov));
1228 rqst[1].rq_iov = qi_iov;
1229 rqst[1].rq_nvec = 1;
1231 rc = SMB2_query_info_init(tcon, &rqst[1], COMPOUND_FID, COMPOUND_FID,
1232 qi.file_info_class, qi.info_type,
1233 qi.additional_information,
1234 qi.input_buffer_length,
1235 qi.output_buffer_length, buffer);
1238 smb2_set_next_command(tcon, &rqst[1]);
1239 smb2_set_related(&rqst[1]);
1242 memset(&close_iov, 0, sizeof(close_iov));
1243 rqst[2].rq_iov = close_iov;
1244 rqst[2].rq_nvec = 1;
1246 rc = SMB2_close_init(tcon, &rqst[2], COMPOUND_FID, COMPOUND_FID);
1249 smb2_set_related(&rqst[2]);
1251 rc = compound_send_recv(xid, ses, flags, 3, rqst,
1252 resp_buftype, rsp_iov);
1255 pqi = (struct smb_query_info __user *)arg;
1256 rsp = (struct smb2_query_info_rsp *)rsp_iov[1].iov_base;
1257 if (le32_to_cpu(rsp->OutputBufferLength) < qi.input_buffer_length)
1258 qi.input_buffer_length = le32_to_cpu(rsp->OutputBufferLength);
1259 if (copy_to_user(&pqi->input_buffer_length, &qi.input_buffer_length,
1260 sizeof(qi.input_buffer_length))) {
1264 if (copy_to_user(pqi + 1, rsp->Buffer, qi.input_buffer_length)) {
1271 SMB2_open_free(&rqst[0]);
1272 SMB2_query_info_free(&rqst[1]);
1273 SMB2_close_free(&rqst[2]);
1274 free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base);
1275 free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base);
1276 free_rsp_buf(resp_buftype[2], rsp_iov[2].iov_base);
1281 smb2_copychunk_range(const unsigned int xid,
1282 struct cifsFileInfo *srcfile,
1283 struct cifsFileInfo *trgtfile, u64 src_off,
1284 u64 len, u64 dest_off)
1287 unsigned int ret_data_len;
1288 struct copychunk_ioctl *pcchunk;
1289 struct copychunk_ioctl_rsp *retbuf = NULL;
1290 struct cifs_tcon *tcon;
1291 int chunks_copied = 0;
1292 bool chunk_sizes_updated = false;
1293 ssize_t bytes_written, total_bytes_written = 0;
1295 pcchunk = kmalloc(sizeof(struct copychunk_ioctl), GFP_KERNEL);
1297 if (pcchunk == NULL)
1300 cifs_dbg(FYI, "in smb2_copychunk_range - about to call request res key\n");
1301 /* Request a key from the server to identify the source of the copy */
1302 rc = SMB2_request_res_key(xid, tlink_tcon(srcfile->tlink),
1303 srcfile->fid.persistent_fid,
1304 srcfile->fid.volatile_fid, pcchunk);
1306 /* Note: request_res_key sets res_key null only if rc !=0 */
1310 /* For now array only one chunk long, will make more flexible later */
1311 pcchunk->ChunkCount = cpu_to_le32(1);
1312 pcchunk->Reserved = 0;
1313 pcchunk->Reserved2 = 0;
1315 tcon = tlink_tcon(trgtfile->tlink);
1318 pcchunk->SourceOffset = cpu_to_le64(src_off);
1319 pcchunk->TargetOffset = cpu_to_le64(dest_off);
1321 cpu_to_le32(min_t(u32, len, tcon->max_bytes_chunk));
1323 /* Request server copy to target from src identified by key */
1324 rc = SMB2_ioctl(xid, tcon, trgtfile->fid.persistent_fid,
1325 trgtfile->fid.volatile_fid, FSCTL_SRV_COPYCHUNK_WRITE,
1326 true /* is_fsctl */, (char *)pcchunk,
1327 sizeof(struct copychunk_ioctl), (char **)&retbuf,
1331 sizeof(struct copychunk_ioctl_rsp)) {
1332 cifs_dbg(VFS, "invalid cchunk response size\n");
1336 if (retbuf->TotalBytesWritten == 0) {
1337 cifs_dbg(FYI, "no bytes copied\n");
1342 * Check if server claimed to write more than we asked
1344 if (le32_to_cpu(retbuf->TotalBytesWritten) >
1345 le32_to_cpu(pcchunk->Length)) {
1346 cifs_dbg(VFS, "invalid copy chunk response\n");
1350 if (le32_to_cpu(retbuf->ChunksWritten) != 1) {
1351 cifs_dbg(VFS, "invalid num chunks written\n");
1357 bytes_written = le32_to_cpu(retbuf->TotalBytesWritten);
1358 src_off += bytes_written;
1359 dest_off += bytes_written;
1360 len -= bytes_written;
1361 total_bytes_written += bytes_written;
1363 cifs_dbg(FYI, "Chunks %d PartialChunk %d Total %zu\n",
1364 le32_to_cpu(retbuf->ChunksWritten),
1365 le32_to_cpu(retbuf->ChunkBytesWritten),
1367 } else if (rc == -EINVAL) {
1368 if (ret_data_len != sizeof(struct copychunk_ioctl_rsp))
1371 cifs_dbg(FYI, "MaxChunks %d BytesChunk %d MaxCopy %d\n",
1372 le32_to_cpu(retbuf->ChunksWritten),
1373 le32_to_cpu(retbuf->ChunkBytesWritten),
1374 le32_to_cpu(retbuf->TotalBytesWritten));
1377 * Check if this is the first request using these sizes,
1378 * (ie check if copy succeed once with original sizes
1379 * and check if the server gave us different sizes after
1380 * we already updated max sizes on previous request).
1381 * if not then why is the server returning an error now
1383 if ((chunks_copied != 0) || chunk_sizes_updated)
1386 /* Check that server is not asking us to grow size */
1387 if (le32_to_cpu(retbuf->ChunkBytesWritten) <
1388 tcon->max_bytes_chunk)
1389 tcon->max_bytes_chunk =
1390 le32_to_cpu(retbuf->ChunkBytesWritten);
1392 goto cchunk_out; /* server gave us bogus size */
1394 /* No need to change MaxChunks since already set to 1 */
1395 chunk_sizes_updated = true;
1406 return total_bytes_written;
1410 smb2_flush_file(const unsigned int xid, struct cifs_tcon *tcon,
1411 struct cifs_fid *fid)
1413 return SMB2_flush(xid, tcon, fid->persistent_fid, fid->volatile_fid);
1417 smb2_read_data_offset(char *buf)
1419 struct smb2_read_rsp *rsp = (struct smb2_read_rsp *)buf;
1420 return rsp->DataOffset;
1424 smb2_read_data_length(char *buf, bool in_remaining)
1426 struct smb2_read_rsp *rsp = (struct smb2_read_rsp *)buf;
1429 return le32_to_cpu(rsp->DataRemaining);
1431 return le32_to_cpu(rsp->DataLength);
1436 smb2_sync_read(const unsigned int xid, struct cifs_fid *pfid,
1437 struct cifs_io_parms *parms, unsigned int *bytes_read,
1438 char **buf, int *buf_type)
1440 parms->persistent_fid = pfid->persistent_fid;
1441 parms->volatile_fid = pfid->volatile_fid;
1442 return SMB2_read(xid, parms, bytes_read, buf, buf_type);
1446 smb2_sync_write(const unsigned int xid, struct cifs_fid *pfid,
1447 struct cifs_io_parms *parms, unsigned int *written,
1448 struct kvec *iov, unsigned long nr_segs)
1451 parms->persistent_fid = pfid->persistent_fid;
1452 parms->volatile_fid = pfid->volatile_fid;
1453 return SMB2_write(xid, parms, written, iov, nr_segs);
1456 /* Set or clear the SPARSE_FILE attribute based on value passed in setsparse */
1457 static bool smb2_set_sparse(const unsigned int xid, struct cifs_tcon *tcon,
1458 struct cifsFileInfo *cfile, struct inode *inode, __u8 setsparse)
1460 struct cifsInodeInfo *cifsi;
1463 cifsi = CIFS_I(inode);
1465 /* if file already sparse don't bother setting sparse again */
1466 if ((cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) && setsparse)
1467 return true; /* already sparse */
1469 if (!(cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) && !setsparse)
1470 return true; /* already not sparse */
1473 * Can't check for sparse support on share the usual way via the
1474 * FS attribute info (FILE_SUPPORTS_SPARSE_FILES) on the share
1475 * since Samba server doesn't set the flag on the share, yet
1476 * supports the set sparse FSCTL and returns sparse correctly
1477 * in the file attributes. If we fail setting sparse though we
1478 * mark that server does not support sparse files for this share
1479 * to avoid repeatedly sending the unsupported fsctl to server
1480 * if the file is repeatedly extended.
1482 if (tcon->broken_sparse_sup)
1485 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
1486 cfile->fid.volatile_fid, FSCTL_SET_SPARSE,
1488 &setsparse, 1, NULL, NULL);
1490 tcon->broken_sparse_sup = true;
1491 cifs_dbg(FYI, "set sparse rc = %d\n", rc);
1496 cifsi->cifsAttrs |= FILE_ATTRIBUTE_SPARSE_FILE;
1498 cifsi->cifsAttrs &= (~FILE_ATTRIBUTE_SPARSE_FILE);
1504 smb2_set_file_size(const unsigned int xid, struct cifs_tcon *tcon,
1505 struct cifsFileInfo *cfile, __u64 size, bool set_alloc)
1507 __le64 eof = cpu_to_le64(size);
1508 struct inode *inode;
1511 * If extending file more than one page make sparse. Many Linux fs
1512 * make files sparse by default when extending via ftruncate
1514 inode = d_inode(cfile->dentry);
1516 if (!set_alloc && (size > inode->i_size + 8192)) {
1517 __u8 set_sparse = 1;
1519 /* whether set sparse succeeds or not, extend the file */
1520 smb2_set_sparse(xid, tcon, cfile, inode, set_sparse);
1523 return SMB2_set_eof(xid, tcon, cfile->fid.persistent_fid,
1524 cfile->fid.volatile_fid, cfile->pid, &eof);
1528 smb2_duplicate_extents(const unsigned int xid,
1529 struct cifsFileInfo *srcfile,
1530 struct cifsFileInfo *trgtfile, u64 src_off,
1531 u64 len, u64 dest_off)
1534 unsigned int ret_data_len;
1535 struct duplicate_extents_to_file dup_ext_buf;
1536 struct cifs_tcon *tcon = tlink_tcon(trgtfile->tlink);
1538 /* server fileays advertise duplicate extent support with this flag */
1539 if ((le32_to_cpu(tcon->fsAttrInfo.Attributes) &
1540 FILE_SUPPORTS_BLOCK_REFCOUNTING) == 0)
1543 dup_ext_buf.VolatileFileHandle = srcfile->fid.volatile_fid;
1544 dup_ext_buf.PersistentFileHandle = srcfile->fid.persistent_fid;
1545 dup_ext_buf.SourceFileOffset = cpu_to_le64(src_off);
1546 dup_ext_buf.TargetFileOffset = cpu_to_le64(dest_off);
1547 dup_ext_buf.ByteCount = cpu_to_le64(len);
1548 cifs_dbg(FYI, "duplicate extents: src off %lld dst off %lld len %lld",
1549 src_off, dest_off, len);
1551 rc = smb2_set_file_size(xid, tcon, trgtfile, dest_off + len, false);
1553 goto duplicate_extents_out;
1555 rc = SMB2_ioctl(xid, tcon, trgtfile->fid.persistent_fid,
1556 trgtfile->fid.volatile_fid,
1557 FSCTL_DUPLICATE_EXTENTS_TO_FILE,
1558 true /* is_fsctl */,
1559 (char *)&dup_ext_buf,
1560 sizeof(struct duplicate_extents_to_file),
1564 if (ret_data_len > 0)
1565 cifs_dbg(FYI, "non-zero response length in duplicate extents");
1567 duplicate_extents_out:
1572 smb2_set_compression(const unsigned int xid, struct cifs_tcon *tcon,
1573 struct cifsFileInfo *cfile)
1575 return SMB2_set_compression(xid, tcon, cfile->fid.persistent_fid,
1576 cfile->fid.volatile_fid);
1580 smb3_set_integrity(const unsigned int xid, struct cifs_tcon *tcon,
1581 struct cifsFileInfo *cfile)
1583 struct fsctl_set_integrity_information_req integr_info;
1584 unsigned int ret_data_len;
1586 integr_info.ChecksumAlgorithm = cpu_to_le16(CHECKSUM_TYPE_UNCHANGED);
1587 integr_info.Flags = 0;
1588 integr_info.Reserved = 0;
1590 return SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
1591 cfile->fid.volatile_fid,
1592 FSCTL_SET_INTEGRITY_INFORMATION,
1593 true /* is_fsctl */,
1594 (char *)&integr_info,
1595 sizeof(struct fsctl_set_integrity_information_req),
1601 /* GMT Token is @GMT-YYYY.MM.DD-HH.MM.SS Unicode which is 48 bytes + null */
1602 #define GMT_TOKEN_SIZE 50
1605 * Input buffer contains (empty) struct smb_snapshot array with size filled in
1606 * For output see struct SRV_SNAPSHOT_ARRAY in MS-SMB2 section 2.2.32.2
1609 smb3_enum_snapshots(const unsigned int xid, struct cifs_tcon *tcon,
1610 struct cifsFileInfo *cfile, void __user *ioc_buf)
1612 char *retbuf = NULL;
1613 unsigned int ret_data_len = 0;
1615 struct smb_snapshot_array snapshot_in;
1617 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
1618 cfile->fid.volatile_fid,
1619 FSCTL_SRV_ENUMERATE_SNAPSHOTS,
1620 true /* is_fsctl */,
1621 NULL, 0 /* no input data */,
1624 cifs_dbg(FYI, "enum snaphots ioctl returned %d and ret buflen is %d\n",
1629 if (ret_data_len && (ioc_buf != NULL) && (retbuf != NULL)) {
1631 if (copy_from_user(&snapshot_in, ioc_buf,
1632 sizeof(struct smb_snapshot_array))) {
1639 * Check for min size, ie not large enough to fit even one GMT
1640 * token (snapshot). On the first ioctl some users may pass in
1641 * smaller size (or zero) to simply get the size of the array
1642 * so the user space caller can allocate sufficient memory
1643 * and retry the ioctl again with larger array size sufficient
1644 * to hold all of the snapshot GMT tokens on the second try.
1646 if (snapshot_in.snapshot_array_size < GMT_TOKEN_SIZE)
1647 ret_data_len = sizeof(struct smb_snapshot_array);
1650 * We return struct SRV_SNAPSHOT_ARRAY, followed by
1651 * the snapshot array (of 50 byte GMT tokens) each
1652 * representing an available previous version of the data
1654 if (ret_data_len > (snapshot_in.snapshot_array_size +
1655 sizeof(struct smb_snapshot_array)))
1656 ret_data_len = snapshot_in.snapshot_array_size +
1657 sizeof(struct smb_snapshot_array);
1659 if (copy_to_user(ioc_buf, retbuf, ret_data_len))
1668 smb2_query_dir_first(const unsigned int xid, struct cifs_tcon *tcon,
1669 const char *path, struct cifs_sb_info *cifs_sb,
1670 struct cifs_fid *fid, __u16 search_flags,
1671 struct cifs_search_info *srch_inf)
1675 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
1676 struct cifs_open_parms oparms;
1678 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
1683 oparms.desired_access = FILE_READ_ATTRIBUTES | FILE_READ_DATA;
1684 oparms.disposition = FILE_OPEN;
1685 if (backup_cred(cifs_sb))
1686 oparms.create_options = CREATE_OPEN_BACKUP_INTENT;
1688 oparms.create_options = 0;
1690 oparms.reconnect = false;
1692 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL, NULL);
1695 cifs_dbg(FYI, "open dir failed rc=%d\n", rc);
1699 srch_inf->entries_in_buffer = 0;
1700 srch_inf->index_of_last_entry = 2;
1702 rc = SMB2_query_directory(xid, tcon, fid->persistent_fid,
1703 fid->volatile_fid, 0, srch_inf);
1705 cifs_dbg(FYI, "query directory failed rc=%d\n", rc);
1706 SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
1712 smb2_query_dir_next(const unsigned int xid, struct cifs_tcon *tcon,
1713 struct cifs_fid *fid, __u16 search_flags,
1714 struct cifs_search_info *srch_inf)
1716 return SMB2_query_directory(xid, tcon, fid->persistent_fid,
1717 fid->volatile_fid, 0, srch_inf);
1721 smb2_close_dir(const unsigned int xid, struct cifs_tcon *tcon,
1722 struct cifs_fid *fid)
1724 return SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
1728 * If we negotiate SMB2 protocol and get STATUS_PENDING - update
1729 * the number of credits and return true. Otherwise - return false.
1732 smb2_is_status_pending(char *buf, struct TCP_Server_Info *server, int length)
1734 struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)buf;
1736 if (shdr->Status != STATUS_PENDING)
1740 spin_lock(&server->req_lock);
1741 server->credits += le16_to_cpu(shdr->CreditRequest);
1742 spin_unlock(&server->req_lock);
1743 wake_up(&server->request_q);
1750 smb2_is_session_expired(char *buf)
1752 struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)buf;
1754 if (shdr->Status != STATUS_NETWORK_SESSION_EXPIRED &&
1755 shdr->Status != STATUS_USER_SESSION_DELETED)
1758 trace_smb3_ses_expired(shdr->TreeId, shdr->SessionId,
1759 le16_to_cpu(shdr->Command),
1760 le64_to_cpu(shdr->MessageId));
1761 cifs_dbg(FYI, "Session expired or deleted\n");
1767 smb2_oplock_response(struct cifs_tcon *tcon, struct cifs_fid *fid,
1768 struct cifsInodeInfo *cinode)
1770 if (tcon->ses->server->capabilities & SMB2_GLOBAL_CAP_LEASING)
1771 return SMB2_lease_break(0, tcon, cinode->lease_key,
1772 smb2_get_lease_state(cinode));
1774 return SMB2_oplock_break(0, tcon, fid->persistent_fid,
1776 CIFS_CACHE_READ(cinode) ? 1 : 0);
1780 smb2_set_related(struct smb_rqst *rqst)
1782 struct smb2_sync_hdr *shdr;
1784 shdr = (struct smb2_sync_hdr *)(rqst->rq_iov[0].iov_base);
1785 shdr->Flags |= SMB2_FLAGS_RELATED_OPERATIONS;
1788 char smb2_padding[7] = {0, 0, 0, 0, 0, 0, 0};
1791 smb2_set_next_command(struct cifs_tcon *tcon, struct smb_rqst *rqst)
1793 struct smb2_sync_hdr *shdr;
1794 struct cifs_ses *ses = tcon->ses;
1795 struct TCP_Server_Info *server = ses->server;
1796 unsigned long len = smb_rqst_len(server, rqst);
1799 /* SMB headers in a compound are 8 byte aligned. */
1801 /* No padding needed */
1805 num_padding = 8 - (len & 7);
1806 if (!smb3_encryption_required(tcon)) {
1808 * If we do not have encryption then we can just add an extra
1809 * iov for the padding.
1811 rqst->rq_iov[rqst->rq_nvec].iov_base = smb2_padding;
1812 rqst->rq_iov[rqst->rq_nvec].iov_len = num_padding;
1817 * We can not add a small padding iov for the encryption case
1818 * because the encryption framework can not handle the padding
1820 * We have to flatten this into a single buffer and add
1821 * the padding to it.
1823 for (i = 1; i < rqst->rq_nvec; i++) {
1824 memcpy(rqst->rq_iov[0].iov_base +
1825 rqst->rq_iov[0].iov_len,
1826 rqst->rq_iov[i].iov_base,
1827 rqst->rq_iov[i].iov_len);
1828 rqst->rq_iov[0].iov_len += rqst->rq_iov[i].iov_len;
1830 memset(rqst->rq_iov[0].iov_base + rqst->rq_iov[0].iov_len,
1832 rqst->rq_iov[0].iov_len += num_padding;
1838 shdr = (struct smb2_sync_hdr *)(rqst->rq_iov[0].iov_base);
1839 shdr->NextCommand = cpu_to_le32(len);
1843 * Passes the query info response back to the caller on success.
1844 * Caller need to free this with free_rsp_buf().
1847 smb2_query_info_compound(const unsigned int xid, struct cifs_tcon *tcon,
1848 __le16 *utf16_path, u32 desired_access,
1849 u32 class, u32 type, u32 output_len,
1850 struct kvec *rsp, int *buftype,
1851 struct cifs_sb_info *cifs_sb)
1853 struct cifs_ses *ses = tcon->ses;
1855 struct smb_rqst rqst[3];
1856 int resp_buftype[3];
1857 struct kvec rsp_iov[3];
1858 struct kvec open_iov[SMB2_CREATE_IOV_SIZE];
1859 struct kvec qi_iov[1];
1860 struct kvec close_iov[1];
1861 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
1862 struct cifs_open_parms oparms;
1863 struct cifs_fid fid;
1866 if (smb3_encryption_required(tcon))
1867 flags |= CIFS_TRANSFORM_REQ;
1869 memset(rqst, 0, sizeof(rqst));
1870 resp_buftype[0] = resp_buftype[1] = resp_buftype[2] = CIFS_NO_BUFFER;
1871 memset(rsp_iov, 0, sizeof(rsp_iov));
1873 memset(&open_iov, 0, sizeof(open_iov));
1874 rqst[0].rq_iov = open_iov;
1875 rqst[0].rq_nvec = SMB2_CREATE_IOV_SIZE;
1878 oparms.desired_access = desired_access;
1879 oparms.disposition = FILE_OPEN;
1880 if (cifs_sb && backup_cred(cifs_sb))
1881 oparms.create_options = CREATE_OPEN_BACKUP_INTENT;
1883 oparms.create_options = 0;
1885 oparms.reconnect = false;
1887 rc = SMB2_open_init(tcon, &rqst[0], &oplock, &oparms, utf16_path);
1890 smb2_set_next_command(tcon, &rqst[0]);
1892 memset(&qi_iov, 0, sizeof(qi_iov));
1893 rqst[1].rq_iov = qi_iov;
1894 rqst[1].rq_nvec = 1;
1896 rc = SMB2_query_info_init(tcon, &rqst[1], COMPOUND_FID, COMPOUND_FID,
1902 smb2_set_next_command(tcon, &rqst[1]);
1903 smb2_set_related(&rqst[1]);
1905 memset(&close_iov, 0, sizeof(close_iov));
1906 rqst[2].rq_iov = close_iov;
1907 rqst[2].rq_nvec = 1;
1909 rc = SMB2_close_init(tcon, &rqst[2], COMPOUND_FID, COMPOUND_FID);
1912 smb2_set_related(&rqst[2]);
1914 rc = compound_send_recv(xid, ses, flags, 3, rqst,
1915 resp_buftype, rsp_iov);
1917 free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base);
1921 *buftype = resp_buftype[1];
1924 SMB2_open_free(&rqst[0]);
1925 SMB2_query_info_free(&rqst[1]);
1926 SMB2_close_free(&rqst[2]);
1927 free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base);
1928 free_rsp_buf(resp_buftype[2], rsp_iov[2].iov_base);
1933 smb2_queryfs(const unsigned int xid, struct cifs_tcon *tcon,
1934 struct kstatfs *buf)
1936 struct smb2_query_info_rsp *rsp;
1937 struct smb2_fs_full_size_info *info = NULL;
1938 __le16 utf16_path = 0; /* Null - open root of share */
1939 struct kvec rsp_iov = {NULL, 0};
1940 int buftype = CIFS_NO_BUFFER;
1944 rc = smb2_query_info_compound(xid, tcon, &utf16_path,
1945 FILE_READ_ATTRIBUTES,
1946 FS_FULL_SIZE_INFORMATION,
1947 SMB2_O_INFO_FILESYSTEM,
1948 sizeof(struct smb2_fs_full_size_info),
1949 &rsp_iov, &buftype, NULL);
1953 rsp = (struct smb2_query_info_rsp *)rsp_iov.iov_base;
1954 buf->f_type = SMB2_MAGIC_NUMBER;
1955 info = (struct smb2_fs_full_size_info *)(
1956 le16_to_cpu(rsp->OutputBufferOffset) + (char *)rsp);
1957 rc = smb2_validate_iov(le16_to_cpu(rsp->OutputBufferOffset),
1958 le32_to_cpu(rsp->OutputBufferLength),
1960 sizeof(struct smb2_fs_full_size_info));
1962 smb2_copy_fs_info_to_kstatfs(info, buf);
1965 free_rsp_buf(buftype, rsp_iov.iov_base);
1970 smb311_queryfs(const unsigned int xid, struct cifs_tcon *tcon,
1971 struct kstatfs *buf)
1974 __le16 srch_path = 0; /* Null - open root of share */
1975 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
1976 struct cifs_open_parms oparms;
1977 struct cifs_fid fid;
1979 if (!tcon->posix_extensions)
1980 return smb2_queryfs(xid, tcon, buf);
1983 oparms.desired_access = FILE_READ_ATTRIBUTES;
1984 oparms.disposition = FILE_OPEN;
1985 oparms.create_options = 0;
1987 oparms.reconnect = false;
1989 rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL, NULL);
1993 rc = SMB311_posix_qfs_info(xid, tcon, fid.persistent_fid,
1994 fid.volatile_fid, buf);
1995 buf->f_type = SMB2_MAGIC_NUMBER;
1996 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
2001 smb2_compare_fids(struct cifsFileInfo *ob1, struct cifsFileInfo *ob2)
2003 return ob1->fid.persistent_fid == ob2->fid.persistent_fid &&
2004 ob1->fid.volatile_fid == ob2->fid.volatile_fid;
2008 smb2_mand_lock(const unsigned int xid, struct cifsFileInfo *cfile, __u64 offset,
2009 __u64 length, __u32 type, int lock, int unlock, bool wait)
2011 if (unlock && !lock)
2012 type = SMB2_LOCKFLAG_UNLOCK;
2013 return SMB2_lock(xid, tlink_tcon(cfile->tlink),
2014 cfile->fid.persistent_fid, cfile->fid.volatile_fid,
2015 current->tgid, length, offset, type, wait);
2019 smb2_get_lease_key(struct inode *inode, struct cifs_fid *fid)
2021 memcpy(fid->lease_key, CIFS_I(inode)->lease_key, SMB2_LEASE_KEY_SIZE);
2025 smb2_set_lease_key(struct inode *inode, struct cifs_fid *fid)
2027 memcpy(CIFS_I(inode)->lease_key, fid->lease_key, SMB2_LEASE_KEY_SIZE);
2031 smb2_new_lease_key(struct cifs_fid *fid)
2033 generate_random_uuid(fid->lease_key);
2037 smb2_get_dfs_refer(const unsigned int xid, struct cifs_ses *ses,
2038 const char *search_name,
2039 struct dfs_info3_param **target_nodes,
2040 unsigned int *num_of_nodes,
2041 const struct nls_table *nls_codepage, int remap)
2044 __le16 *utf16_path = NULL;
2045 int utf16_path_len = 0;
2046 struct cifs_tcon *tcon;
2047 struct fsctl_get_dfs_referral_req *dfs_req = NULL;
2048 struct get_dfs_referral_rsp *dfs_rsp = NULL;
2049 u32 dfs_req_size = 0, dfs_rsp_size = 0;
2051 cifs_dbg(FYI, "smb2_get_dfs_refer path <%s>\n", search_name);
2054 * Try to use the IPC tcon, otherwise just use any
2056 tcon = ses->tcon_ipc;
2058 spin_lock(&cifs_tcp_ses_lock);
2059 tcon = list_first_entry_or_null(&ses->tcon_list,
2064 spin_unlock(&cifs_tcp_ses_lock);
2068 cifs_dbg(VFS, "session %p has no tcon available for a dfs referral request\n",
2074 utf16_path = cifs_strndup_to_utf16(search_name, PATH_MAX,
2076 nls_codepage, remap);
2082 dfs_req_size = sizeof(*dfs_req) + utf16_path_len;
2083 dfs_req = kzalloc(dfs_req_size, GFP_KERNEL);
2089 /* Highest DFS referral version understood */
2090 dfs_req->MaxReferralLevel = DFS_VERSION;
2092 /* Path to resolve in an UTF-16 null-terminated string */
2093 memcpy(dfs_req->RequestFileName, utf16_path, utf16_path_len);
2096 rc = SMB2_ioctl(xid, tcon, NO_FILE_ID, NO_FILE_ID,
2097 FSCTL_DFS_GET_REFERRALS,
2098 true /* is_fsctl */,
2099 (char *)dfs_req, dfs_req_size,
2100 (char **)&dfs_rsp, &dfs_rsp_size);
2101 } while (rc == -EAGAIN);
2104 if ((rc != -ENOENT) && (rc != -EOPNOTSUPP))
2105 cifs_dbg(VFS, "ioctl error in smb2_get_dfs_refer rc=%d\n", rc);
2109 rc = parse_dfs_referrals(dfs_rsp, dfs_rsp_size,
2110 num_of_nodes, target_nodes,
2111 nls_codepage, remap, search_name,
2112 true /* is_unicode */);
2114 cifs_dbg(VFS, "parse error in smb2_get_dfs_refer rc=%d\n", rc);
2119 if (tcon && !tcon->ipc) {
2120 /* ipc tcons are not refcounted */
2121 spin_lock(&cifs_tcp_ses_lock);
2123 spin_unlock(&cifs_tcp_ses_lock);
2130 #define SMB2_SYMLINK_STRUCT_SIZE \
2131 (sizeof(struct smb2_err_rsp) - 1 + sizeof(struct smb2_symlink_err_rsp))
2134 smb2_query_symlink(const unsigned int xid, struct cifs_tcon *tcon,
2135 const char *full_path, char **target_path,
2136 struct cifs_sb_info *cifs_sb)
2140 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
2141 struct cifs_open_parms oparms;
2142 struct cifs_fid fid;
2143 struct kvec err_iov = {NULL, 0};
2144 struct smb2_err_rsp *err_buf = NULL;
2146 struct smb2_symlink_err_rsp *symlink;
2147 unsigned int sub_len;
2148 unsigned int sub_offset;
2149 unsigned int print_len;
2150 unsigned int print_offset;
2152 cifs_dbg(FYI, "%s: path: %s\n", __func__, full_path);
2154 utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb);
2159 oparms.desired_access = FILE_READ_ATTRIBUTES;
2160 oparms.disposition = FILE_OPEN;
2161 if (backup_cred(cifs_sb))
2162 oparms.create_options = CREATE_OPEN_BACKUP_INTENT;
2164 oparms.create_options = 0;
2166 oparms.reconnect = false;
2168 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, &err_iov,
2170 if (!rc || !err_iov.iov_base) {
2175 err_buf = err_iov.iov_base;
2176 if (le32_to_cpu(err_buf->ByteCount) < sizeof(struct smb2_symlink_err_rsp) ||
2177 err_iov.iov_len < SMB2_SYMLINK_STRUCT_SIZE) {
2182 /* open must fail on symlink - reset rc */
2184 symlink = (struct smb2_symlink_err_rsp *)err_buf->ErrorData;
2185 sub_len = le16_to_cpu(symlink->SubstituteNameLength);
2186 sub_offset = le16_to_cpu(symlink->SubstituteNameOffset);
2187 print_len = le16_to_cpu(symlink->PrintNameLength);
2188 print_offset = le16_to_cpu(symlink->PrintNameOffset);
2190 if (err_iov.iov_len < SMB2_SYMLINK_STRUCT_SIZE + sub_offset + sub_len) {
2195 if (err_iov.iov_len <
2196 SMB2_SYMLINK_STRUCT_SIZE + print_offset + print_len) {
2201 *target_path = cifs_strndup_from_utf16(
2202 (char *)symlink->PathBuffer + sub_offset,
2203 sub_len, true, cifs_sb->local_nls);
2204 if (!(*target_path)) {
2208 convert_delimiter(*target_path, '/');
2209 cifs_dbg(FYI, "%s: target path: %s\n", __func__, *target_path);
2212 free_rsp_buf(resp_buftype, err_buf);
2218 #ifdef CONFIG_CIFS_ACL
2219 static struct cifs_ntsd *
2220 get_smb2_acl_by_fid(struct cifs_sb_info *cifs_sb,
2221 const struct cifs_fid *cifsfid, u32 *pacllen)
2223 struct cifs_ntsd *pntsd = NULL;
2225 int rc = -EOPNOTSUPP;
2226 struct tcon_link *tlink = cifs_sb_tlink(cifs_sb);
2229 return ERR_CAST(tlink);
2232 cifs_dbg(FYI, "trying to get acl\n");
2234 rc = SMB2_query_acl(xid, tlink_tcon(tlink), cifsfid->persistent_fid,
2235 cifsfid->volatile_fid, (void **)&pntsd, pacllen);
2238 cifs_put_tlink(tlink);
2240 cifs_dbg(FYI, "%s: rc = %d ACL len %d\n", __func__, rc, *pacllen);
2247 static struct cifs_ntsd *
2248 get_smb2_acl_by_path(struct cifs_sb_info *cifs_sb,
2249 const char *path, u32 *pacllen)
2251 struct cifs_ntsd *pntsd = NULL;
2252 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
2255 struct cifs_tcon *tcon;
2256 struct tcon_link *tlink = cifs_sb_tlink(cifs_sb);
2257 struct cifs_fid fid;
2258 struct cifs_open_parms oparms;
2261 cifs_dbg(FYI, "get smb3 acl for path %s\n", path);
2263 return ERR_CAST(tlink);
2265 tcon = tlink_tcon(tlink);
2268 if (backup_cred(cifs_sb))
2269 oparms.create_options = CREATE_OPEN_BACKUP_INTENT;
2271 oparms.create_options = 0;
2273 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
2281 oparms.desired_access = READ_CONTROL;
2282 oparms.disposition = FILE_OPEN;
2284 oparms.reconnect = false;
2286 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL, NULL);
2289 rc = SMB2_query_acl(xid, tlink_tcon(tlink), fid.persistent_fid,
2290 fid.volatile_fid, (void **)&pntsd, pacllen);
2291 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
2294 cifs_put_tlink(tlink);
2297 cifs_dbg(FYI, "%s: rc = %d ACL len %d\n", __func__, rc, *pacllen);
2303 #ifdef CONFIG_CIFS_ACL
2305 set_smb2_acl(struct cifs_ntsd *pnntsd, __u32 acllen,
2306 struct inode *inode, const char *path, int aclflag)
2308 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
2310 int rc, access_flags = 0;
2311 struct cifs_tcon *tcon;
2312 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
2313 struct tcon_link *tlink = cifs_sb_tlink(cifs_sb);
2314 struct cifs_fid fid;
2315 struct cifs_open_parms oparms;
2318 cifs_dbg(FYI, "set smb3 acl for path %s\n", path);
2320 return PTR_ERR(tlink);
2322 tcon = tlink_tcon(tlink);
2325 if (backup_cred(cifs_sb))
2326 oparms.create_options = CREATE_OPEN_BACKUP_INTENT;
2328 oparms.create_options = 0;
2330 if (aclflag == CIFS_ACL_OWNER || aclflag == CIFS_ACL_GROUP)
2331 access_flags = WRITE_OWNER;
2333 access_flags = WRITE_DAC;
2335 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
2343 oparms.desired_access = access_flags;
2344 oparms.disposition = FILE_OPEN;
2347 oparms.reconnect = false;
2349 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL, NULL);
2352 rc = SMB2_set_acl(xid, tlink_tcon(tlink), fid.persistent_fid,
2353 fid.volatile_fid, pnntsd, acllen, aclflag);
2354 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
2357 cifs_put_tlink(tlink);
2361 #endif /* CIFS_ACL */
2363 /* Retrieve an ACL from the server */
2364 static struct cifs_ntsd *
2365 get_smb2_acl(struct cifs_sb_info *cifs_sb,
2366 struct inode *inode, const char *path,
2369 struct cifs_ntsd *pntsd = NULL;
2370 struct cifsFileInfo *open_file = NULL;
2373 open_file = find_readable_file(CIFS_I(inode), true);
2375 return get_smb2_acl_by_path(cifs_sb, path, pacllen);
2377 pntsd = get_smb2_acl_by_fid(cifs_sb, &open_file->fid, pacllen);
2378 cifsFileInfo_put(open_file);
2383 static long smb3_zero_range(struct file *file, struct cifs_tcon *tcon,
2384 loff_t offset, loff_t len, bool keep_size)
2386 struct inode *inode;
2387 struct cifsInodeInfo *cifsi;
2388 struct cifsFileInfo *cfile = file->private_data;
2389 struct file_zero_data_information fsctl_buf;
2395 inode = d_inode(cfile->dentry);
2396 cifsi = CIFS_I(inode);
2398 /* if file not oplocked can't be sure whether asking to extend size */
2399 if (!CIFS_CACHE_READ(cifsi))
2400 if (keep_size == false) {
2407 * Must check if file sparse since fallocate -z (zero range) assumes
2408 * non-sparse allocation
2410 if (!(cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE)) {
2417 * need to make sure we are not asked to extend the file since the SMB3
2418 * fsctl does not change the file size. In the future we could change
2419 * this to zero the first part of the range then set the file size
2420 * which for a non sparse file would zero the newly extended range
2422 if (keep_size == false)
2423 if (i_size_read(inode) < offset + len) {
2429 cifs_dbg(FYI, "offset %lld len %lld", offset, len);
2431 fsctl_buf.FileOffset = cpu_to_le64(offset);
2432 fsctl_buf.BeyondFinalZero = cpu_to_le64(offset + len);
2434 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
2435 cfile->fid.volatile_fid, FSCTL_SET_ZERO_DATA,
2436 true /* is_fctl */, (char *)&fsctl_buf,
2437 sizeof(struct file_zero_data_information), NULL, NULL);
2442 static long smb3_punch_hole(struct file *file, struct cifs_tcon *tcon,
2443 loff_t offset, loff_t len)
2445 struct inode *inode;
2446 struct cifsInodeInfo *cifsi;
2447 struct cifsFileInfo *cfile = file->private_data;
2448 struct file_zero_data_information fsctl_buf;
2451 __u8 set_sparse = 1;
2455 inode = d_inode(cfile->dentry);
2456 cifsi = CIFS_I(inode);
2458 /* Need to make file sparse, if not already, before freeing range. */
2459 /* Consider adding equivalent for compressed since it could also work */
2460 if (!smb2_set_sparse(xid, tcon, cfile, inode, set_sparse)) {
2466 cifs_dbg(FYI, "offset %lld len %lld", offset, len);
2468 fsctl_buf.FileOffset = cpu_to_le64(offset);
2469 fsctl_buf.BeyondFinalZero = cpu_to_le64(offset + len);
2471 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
2472 cfile->fid.volatile_fid, FSCTL_SET_ZERO_DATA,
2473 true /* is_fctl */, (char *)&fsctl_buf,
2474 sizeof(struct file_zero_data_information), NULL, NULL);
2479 static long smb3_simple_falloc(struct file *file, struct cifs_tcon *tcon,
2480 loff_t off, loff_t len, bool keep_size)
2482 struct inode *inode;
2483 struct cifsInodeInfo *cifsi;
2484 struct cifsFileInfo *cfile = file->private_data;
2485 long rc = -EOPNOTSUPP;
2490 inode = d_inode(cfile->dentry);
2491 cifsi = CIFS_I(inode);
2493 /* if file not oplocked can't be sure whether asking to extend size */
2494 if (!CIFS_CACHE_READ(cifsi))
2495 if (keep_size == false) {
2501 * Files are non-sparse by default so falloc may be a no-op
2502 * Must check if file sparse. If not sparse, and not extending
2503 * then no need to do anything since file already allocated
2505 if ((cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) == 0) {
2506 if (keep_size == true)
2508 /* check if extending file */
2509 else if (i_size_read(inode) >= off + len)
2510 /* not extending file and already not sparse */
2512 /* BB: in future add else clause to extend file */
2519 if ((keep_size == true) || (i_size_read(inode) >= off + len)) {
2521 * Check if falloc starts within first few pages of file
2522 * and ends within a few pages of the end of file to
2523 * ensure that most of file is being forced to be
2524 * fallocated now. If so then setting whole file sparse
2525 * ie potentially making a few extra pages at the beginning
2526 * or end of the file non-sparse via set_sparse is harmless.
2528 if ((off > 8192) || (off + len + 8192 < i_size_read(inode))) {
2534 rc = smb2_set_sparse(xid, tcon, cfile, inode, false);
2536 /* BB: else ... in future add code to extend file and set sparse */
2544 static long smb3_fallocate(struct file *file, struct cifs_tcon *tcon, int mode,
2545 loff_t off, loff_t len)
2547 /* KEEP_SIZE already checked for by do_fallocate */
2548 if (mode & FALLOC_FL_PUNCH_HOLE)
2549 return smb3_punch_hole(file, tcon, off, len);
2550 else if (mode & FALLOC_FL_ZERO_RANGE) {
2551 if (mode & FALLOC_FL_KEEP_SIZE)
2552 return smb3_zero_range(file, tcon, off, len, true);
2553 return smb3_zero_range(file, tcon, off, len, false);
2554 } else if (mode == FALLOC_FL_KEEP_SIZE)
2555 return smb3_simple_falloc(file, tcon, off, len, true);
2557 return smb3_simple_falloc(file, tcon, off, len, false);
2563 smb2_downgrade_oplock(struct TCP_Server_Info *server,
2564 struct cifsInodeInfo *cinode, bool set_level2)
2567 server->ops->set_oplock_level(cinode, SMB2_OPLOCK_LEVEL_II,
2570 server->ops->set_oplock_level(cinode, 0, 0, NULL);
2574 smb2_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
2575 unsigned int epoch, bool *purge_cache)
2578 if (oplock == SMB2_OPLOCK_LEVEL_NOCHANGE)
2580 if (oplock == SMB2_OPLOCK_LEVEL_BATCH) {
2581 cinode->oplock = CIFS_CACHE_RHW_FLG;
2582 cifs_dbg(FYI, "Batch Oplock granted on inode %p\n",
2583 &cinode->vfs_inode);
2584 } else if (oplock == SMB2_OPLOCK_LEVEL_EXCLUSIVE) {
2585 cinode->oplock = CIFS_CACHE_RW_FLG;
2586 cifs_dbg(FYI, "Exclusive Oplock granted on inode %p\n",
2587 &cinode->vfs_inode);
2588 } else if (oplock == SMB2_OPLOCK_LEVEL_II) {
2589 cinode->oplock = CIFS_CACHE_READ_FLG;
2590 cifs_dbg(FYI, "Level II Oplock granted on inode %p\n",
2591 &cinode->vfs_inode);
2597 smb21_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
2598 unsigned int epoch, bool *purge_cache)
2600 char message[5] = {0};
2603 if (oplock == SMB2_OPLOCK_LEVEL_NOCHANGE)
2607 if (oplock & SMB2_LEASE_READ_CACHING_HE) {
2608 cinode->oplock |= CIFS_CACHE_READ_FLG;
2609 strcat(message, "R");
2611 if (oplock & SMB2_LEASE_HANDLE_CACHING_HE) {
2612 cinode->oplock |= CIFS_CACHE_HANDLE_FLG;
2613 strcat(message, "H");
2615 if (oplock & SMB2_LEASE_WRITE_CACHING_HE) {
2616 cinode->oplock |= CIFS_CACHE_WRITE_FLG;
2617 strcat(message, "W");
2619 if (!cinode->oplock)
2620 strcat(message, "None");
2621 cifs_dbg(FYI, "%s Lease granted on inode %p\n", message,
2622 &cinode->vfs_inode);
2626 smb3_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
2627 unsigned int epoch, bool *purge_cache)
2629 unsigned int old_oplock = cinode->oplock;
2631 smb21_set_oplock_level(cinode, oplock, epoch, purge_cache);
2634 *purge_cache = false;
2635 if (old_oplock == CIFS_CACHE_READ_FLG) {
2636 if (cinode->oplock == CIFS_CACHE_READ_FLG &&
2637 (epoch - cinode->epoch > 0))
2638 *purge_cache = true;
2639 else if (cinode->oplock == CIFS_CACHE_RH_FLG &&
2640 (epoch - cinode->epoch > 1))
2641 *purge_cache = true;
2642 else if (cinode->oplock == CIFS_CACHE_RHW_FLG &&
2643 (epoch - cinode->epoch > 1))
2644 *purge_cache = true;
2645 else if (cinode->oplock == 0 &&
2646 (epoch - cinode->epoch > 0))
2647 *purge_cache = true;
2648 } else if (old_oplock == CIFS_CACHE_RH_FLG) {
2649 if (cinode->oplock == CIFS_CACHE_RH_FLG &&
2650 (epoch - cinode->epoch > 0))
2651 *purge_cache = true;
2652 else if (cinode->oplock == CIFS_CACHE_RHW_FLG &&
2653 (epoch - cinode->epoch > 1))
2654 *purge_cache = true;
2656 cinode->epoch = epoch;
2661 smb2_is_read_op(__u32 oplock)
2663 return oplock == SMB2_OPLOCK_LEVEL_II;
2667 smb21_is_read_op(__u32 oplock)
2669 return (oplock & SMB2_LEASE_READ_CACHING_HE) &&
2670 !(oplock & SMB2_LEASE_WRITE_CACHING_HE);
2674 map_oplock_to_lease(u8 oplock)
2676 if (oplock == SMB2_OPLOCK_LEVEL_EXCLUSIVE)
2677 return SMB2_LEASE_WRITE_CACHING | SMB2_LEASE_READ_CACHING;
2678 else if (oplock == SMB2_OPLOCK_LEVEL_II)
2679 return SMB2_LEASE_READ_CACHING;
2680 else if (oplock == SMB2_OPLOCK_LEVEL_BATCH)
2681 return SMB2_LEASE_HANDLE_CACHING | SMB2_LEASE_READ_CACHING |
2682 SMB2_LEASE_WRITE_CACHING;
2687 smb2_create_lease_buf(u8 *lease_key, u8 oplock)
2689 struct create_lease *buf;
2691 buf = kzalloc(sizeof(struct create_lease), GFP_KERNEL);
2695 memcpy(&buf->lcontext.LeaseKey, lease_key, SMB2_LEASE_KEY_SIZE);
2696 buf->lcontext.LeaseState = map_oplock_to_lease(oplock);
2698 buf->ccontext.DataOffset = cpu_to_le16(offsetof
2699 (struct create_lease, lcontext));
2700 buf->ccontext.DataLength = cpu_to_le32(sizeof(struct lease_context));
2701 buf->ccontext.NameOffset = cpu_to_le16(offsetof
2702 (struct create_lease, Name));
2703 buf->ccontext.NameLength = cpu_to_le16(4);
2704 /* SMB2_CREATE_REQUEST_LEASE is "RqLs" */
2713 smb3_create_lease_buf(u8 *lease_key, u8 oplock)
2715 struct create_lease_v2 *buf;
2717 buf = kzalloc(sizeof(struct create_lease_v2), GFP_KERNEL);
2721 memcpy(&buf->lcontext.LeaseKey, lease_key, SMB2_LEASE_KEY_SIZE);
2722 buf->lcontext.LeaseState = map_oplock_to_lease(oplock);
2724 buf->ccontext.DataOffset = cpu_to_le16(offsetof
2725 (struct create_lease_v2, lcontext));
2726 buf->ccontext.DataLength = cpu_to_le32(sizeof(struct lease_context_v2));
2727 buf->ccontext.NameOffset = cpu_to_le16(offsetof
2728 (struct create_lease_v2, Name));
2729 buf->ccontext.NameLength = cpu_to_le16(4);
2730 /* SMB2_CREATE_REQUEST_LEASE is "RqLs" */
2739 smb2_parse_lease_buf(void *buf, unsigned int *epoch, char *lease_key)
2741 struct create_lease *lc = (struct create_lease *)buf;
2743 *epoch = 0; /* not used */
2744 if (lc->lcontext.LeaseFlags & SMB2_LEASE_FLAG_BREAK_IN_PROGRESS)
2745 return SMB2_OPLOCK_LEVEL_NOCHANGE;
2746 return le32_to_cpu(lc->lcontext.LeaseState);
2750 smb3_parse_lease_buf(void *buf, unsigned int *epoch, char *lease_key)
2752 struct create_lease_v2 *lc = (struct create_lease_v2 *)buf;
2754 *epoch = le16_to_cpu(lc->lcontext.Epoch);
2755 if (lc->lcontext.LeaseFlags & SMB2_LEASE_FLAG_BREAK_IN_PROGRESS)
2756 return SMB2_OPLOCK_LEVEL_NOCHANGE;
2758 memcpy(lease_key, &lc->lcontext.LeaseKey, SMB2_LEASE_KEY_SIZE);
2759 return le32_to_cpu(lc->lcontext.LeaseState);
2763 smb2_wp_retry_size(struct inode *inode)
2765 return min_t(unsigned int, CIFS_SB(inode->i_sb)->wsize,
2766 SMB2_MAX_BUFFER_SIZE);
2770 smb2_dir_needs_close(struct cifsFileInfo *cfile)
2772 return !cfile->invalidHandle;
2776 fill_transform_hdr(struct smb2_transform_hdr *tr_hdr, unsigned int orig_len,
2777 struct smb_rqst *old_rq)
2779 struct smb2_sync_hdr *shdr =
2780 (struct smb2_sync_hdr *)old_rq->rq_iov[0].iov_base;
2782 memset(tr_hdr, 0, sizeof(struct smb2_transform_hdr));
2783 tr_hdr->ProtocolId = SMB2_TRANSFORM_PROTO_NUM;
2784 tr_hdr->OriginalMessageSize = cpu_to_le32(orig_len);
2785 tr_hdr->Flags = cpu_to_le16(0x01);
2786 get_random_bytes(&tr_hdr->Nonce, SMB3_AES128CMM_NONCE);
2787 memcpy(&tr_hdr->SessionId, &shdr->SessionId, 8);
2790 /* We can not use the normal sg_set_buf() as we will sometimes pass a
2791 * stack object as buf.
2793 static inline void smb2_sg_set_buf(struct scatterlist *sg, const void *buf,
2794 unsigned int buflen)
2796 sg_set_page(sg, virt_to_page(buf), buflen, offset_in_page(buf));
2799 /* Assumes the first rqst has a transform header as the first iov.
2801 * rqst[0].rq_iov[0] is transform header
2802 * rqst[0].rq_iov[1+] data to be encrypted/decrypted
2803 * rqst[1+].rq_iov[0+] data to be encrypted/decrypted
2805 static struct scatterlist *
2806 init_sg(int num_rqst, struct smb_rqst *rqst, u8 *sign)
2808 unsigned int sg_len;
2809 struct scatterlist *sg;
2812 unsigned int idx = 0;
2816 for (i = 0; i < num_rqst; i++)
2817 sg_len += rqst[i].rq_nvec + rqst[i].rq_npages;
2819 sg = kmalloc_array(sg_len, sizeof(struct scatterlist), GFP_KERNEL);
2823 sg_init_table(sg, sg_len);
2824 for (i = 0; i < num_rqst; i++) {
2825 for (j = 0; j < rqst[i].rq_nvec; j++) {
2827 * The first rqst has a transform header where the
2828 * first 20 bytes are not part of the encrypted blob
2830 skip = (i == 0) && (j == 0) ? 20 : 0;
2831 smb2_sg_set_buf(&sg[idx++],
2832 rqst[i].rq_iov[j].iov_base + skip,
2833 rqst[i].rq_iov[j].iov_len - skip);
2836 for (j = 0; j < rqst[i].rq_npages; j++) {
2837 unsigned int len, offset;
2839 rqst_page_get_length(&rqst[i], j, &len, &offset);
2840 sg_set_page(&sg[idx++], rqst[i].rq_pages[j], len, offset);
2843 smb2_sg_set_buf(&sg[idx], sign, SMB2_SIGNATURE_SIZE);
2848 smb2_get_enc_key(struct TCP_Server_Info *server, __u64 ses_id, int enc, u8 *key)
2850 struct cifs_ses *ses;
2853 spin_lock(&cifs_tcp_ses_lock);
2854 list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) {
2855 if (ses->Suid != ses_id)
2857 ses_enc_key = enc ? ses->smb3encryptionkey :
2858 ses->smb3decryptionkey;
2859 memcpy(key, ses_enc_key, SMB3_SIGN_KEY_SIZE);
2860 spin_unlock(&cifs_tcp_ses_lock);
2863 spin_unlock(&cifs_tcp_ses_lock);
2868 * Encrypt or decrypt @rqst message. @rqst[0] has the following format:
2869 * iov[0] - transform header (associate data),
2870 * iov[1-N] - SMB2 header and pages - data to encrypt.
2871 * On success return encrypted data in iov[1-N] and pages, leave iov[0]
2875 crypt_message(struct TCP_Server_Info *server, int num_rqst,
2876 struct smb_rqst *rqst, int enc)
2878 struct smb2_transform_hdr *tr_hdr =
2879 (struct smb2_transform_hdr *)rqst[0].rq_iov[0].iov_base;
2880 unsigned int assoc_data_len = sizeof(struct smb2_transform_hdr) - 20;
2882 struct scatterlist *sg;
2883 u8 sign[SMB2_SIGNATURE_SIZE] = {};
2884 u8 key[SMB3_SIGN_KEY_SIZE];
2885 struct aead_request *req;
2887 unsigned int iv_len;
2888 DECLARE_CRYPTO_WAIT(wait);
2889 struct crypto_aead *tfm;
2890 unsigned int crypt_len = le32_to_cpu(tr_hdr->OriginalMessageSize);
2892 rc = smb2_get_enc_key(server, tr_hdr->SessionId, enc, key);
2894 cifs_dbg(VFS, "%s: Could not get %scryption key\n", __func__,
2899 rc = smb3_crypto_aead_allocate(server);
2901 cifs_dbg(VFS, "%s: crypto alloc failed\n", __func__);
2905 tfm = enc ? server->secmech.ccmaesencrypt :
2906 server->secmech.ccmaesdecrypt;
2907 rc = crypto_aead_setkey(tfm, key, SMB3_SIGN_KEY_SIZE);
2909 cifs_dbg(VFS, "%s: Failed to set aead key %d\n", __func__, rc);
2913 rc = crypto_aead_setauthsize(tfm, SMB2_SIGNATURE_SIZE);
2915 cifs_dbg(VFS, "%s: Failed to set authsize %d\n", __func__, rc);
2919 req = aead_request_alloc(tfm, GFP_KERNEL);
2921 cifs_dbg(VFS, "%s: Failed to alloc aead request", __func__);
2926 memcpy(sign, &tr_hdr->Signature, SMB2_SIGNATURE_SIZE);
2927 crypt_len += SMB2_SIGNATURE_SIZE;
2930 sg = init_sg(num_rqst, rqst, sign);
2932 cifs_dbg(VFS, "%s: Failed to init sg", __func__);
2937 iv_len = crypto_aead_ivsize(tfm);
2938 iv = kzalloc(iv_len, GFP_KERNEL);
2940 cifs_dbg(VFS, "%s: Failed to alloc IV", __func__);
2945 memcpy(iv + 1, (char *)tr_hdr->Nonce, SMB3_AES128CMM_NONCE);
2947 aead_request_set_crypt(req, sg, sg, crypt_len, iv);
2948 aead_request_set_ad(req, assoc_data_len);
2950 aead_request_set_callback(req, CRYPTO_TFM_REQ_MAY_BACKLOG,
2951 crypto_req_done, &wait);
2953 rc = crypto_wait_req(enc ? crypto_aead_encrypt(req)
2954 : crypto_aead_decrypt(req), &wait);
2957 memcpy(&tr_hdr->Signature, sign, SMB2_SIGNATURE_SIZE);
2968 smb3_free_compound_rqst(int num_rqst, struct smb_rqst *rqst)
2972 for (i = 0; i < num_rqst; i++) {
2973 if (rqst[i].rq_pages) {
2974 for (j = rqst[i].rq_npages - 1; j >= 0; j--)
2975 put_page(rqst[i].rq_pages[j]);
2976 kfree(rqst[i].rq_pages);
2982 * This function will initialize new_rq and encrypt the content.
2983 * The first entry, new_rq[0], only contains a single iov which contains
2984 * a smb2_transform_hdr and is pre-allocated by the caller.
2985 * This function then populates new_rq[1+] with the content from olq_rq[0+].
2987 * The end result is an array of smb_rqst structures where the first structure
2988 * only contains a single iov for the transform header which we then can pass
2989 * to crypt_message().
2991 * new_rq[0].rq_iov[0] : smb2_transform_hdr pre-allocated by the caller
2992 * new_rq[1+].rq_iov[*] == old_rq[0+].rq_iov[*] : SMB2/3 requests
2995 smb3_init_transform_rq(struct TCP_Server_Info *server, int num_rqst,
2996 struct smb_rqst *new_rq, struct smb_rqst *old_rq)
2998 struct page **pages;
2999 struct smb2_transform_hdr *tr_hdr = new_rq[0].rq_iov[0].iov_base;
3000 unsigned int npages;
3001 unsigned int orig_len = 0;
3005 for (i = 1; i < num_rqst; i++) {
3006 npages = old_rq[i - 1].rq_npages;
3007 pages = kmalloc_array(npages, sizeof(struct page *),
3012 new_rq[i].rq_pages = pages;
3013 new_rq[i].rq_npages = npages;
3014 new_rq[i].rq_offset = old_rq[i - 1].rq_offset;
3015 new_rq[i].rq_pagesz = old_rq[i - 1].rq_pagesz;
3016 new_rq[i].rq_tailsz = old_rq[i - 1].rq_tailsz;
3017 new_rq[i].rq_iov = old_rq[i - 1].rq_iov;
3018 new_rq[i].rq_nvec = old_rq[i - 1].rq_nvec;
3020 orig_len += smb_rqst_len(server, &old_rq[i - 1]);
3022 for (j = 0; j < npages; j++) {
3023 pages[j] = alloc_page(GFP_KERNEL|__GFP_HIGHMEM);
3028 /* copy pages form the old */
3029 for (j = 0; j < npages; j++) {
3031 unsigned int offset, len;
3033 rqst_page_get_length(&new_rq[i], j, &len, &offset);
3035 dst = (char *) kmap(new_rq[i].rq_pages[j]) + offset;
3036 src = (char *) kmap(old_rq[i - 1].rq_pages[j]) + offset;
3038 memcpy(dst, src, len);
3039 kunmap(new_rq[i].rq_pages[j]);
3040 kunmap(old_rq[i - 1].rq_pages[j]);
3044 /* fill the 1st iov with a transform header */
3045 fill_transform_hdr(tr_hdr, orig_len, old_rq);
3047 rc = crypt_message(server, num_rqst, new_rq, 1);
3048 cifs_dbg(FYI, "encrypt message returned %d", rc);
3055 smb3_free_compound_rqst(num_rqst - 1, &new_rq[1]);
3060 smb3_is_transform_hdr(void *buf)
3062 struct smb2_transform_hdr *trhdr = buf;
3064 return trhdr->ProtocolId == SMB2_TRANSFORM_PROTO_NUM;
3068 decrypt_raw_data(struct TCP_Server_Info *server, char *buf,
3069 unsigned int buf_data_size, struct page **pages,
3070 unsigned int npages, unsigned int page_data_size)
3073 struct smb_rqst rqst = {NULL};
3076 iov[0].iov_base = buf;
3077 iov[0].iov_len = sizeof(struct smb2_transform_hdr);
3078 iov[1].iov_base = buf + sizeof(struct smb2_transform_hdr);
3079 iov[1].iov_len = buf_data_size;
3083 rqst.rq_pages = pages;
3084 rqst.rq_npages = npages;
3085 rqst.rq_pagesz = PAGE_SIZE;
3086 rqst.rq_tailsz = (page_data_size % PAGE_SIZE) ? : PAGE_SIZE;
3088 rc = crypt_message(server, 1, &rqst, 0);
3089 cifs_dbg(FYI, "decrypt message returned %d\n", rc);
3094 memmove(buf, iov[1].iov_base, buf_data_size);
3096 server->total_read = buf_data_size + page_data_size;
3102 read_data_into_pages(struct TCP_Server_Info *server, struct page **pages,
3103 unsigned int npages, unsigned int len)
3108 for (i = 0; i < npages; i++) {
3109 struct page *page = pages[i];
3113 if (len >= PAGE_SIZE) {
3114 /* enough data to fill the page */
3118 zero_user(page, len, PAGE_SIZE - len);
3121 length = cifs_read_page_from_socket(server, page, 0, n);
3124 server->total_read += length;
3131 init_read_bvec(struct page **pages, unsigned int npages, unsigned int data_size,
3132 unsigned int cur_off, struct bio_vec **page_vec)
3134 struct bio_vec *bvec;
3137 bvec = kcalloc(npages, sizeof(struct bio_vec), GFP_KERNEL);
3141 for (i = 0; i < npages; i++) {
3142 bvec[i].bv_page = pages[i];
3143 bvec[i].bv_offset = (i == 0) ? cur_off : 0;
3144 bvec[i].bv_len = min_t(unsigned int, PAGE_SIZE, data_size);
3145 data_size -= bvec[i].bv_len;
3148 if (data_size != 0) {
3149 cifs_dbg(VFS, "%s: something went wrong\n", __func__);
3159 handle_read_data(struct TCP_Server_Info *server, struct mid_q_entry *mid,
3160 char *buf, unsigned int buf_len, struct page **pages,
3161 unsigned int npages, unsigned int page_data_size)
3163 unsigned int data_offset;
3164 unsigned int data_len;
3165 unsigned int cur_off;
3166 unsigned int cur_page_idx;
3167 unsigned int pad_len;
3168 struct cifs_readdata *rdata = mid->callback_data;
3169 struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)buf;
3170 struct bio_vec *bvec = NULL;
3171 struct iov_iter iter;
3174 bool use_rdma_mr = false;
3176 if (shdr->Command != SMB2_READ) {
3177 cifs_dbg(VFS, "only big read responses are supported\n");
3181 if (server->ops->is_session_expired &&
3182 server->ops->is_session_expired(buf)) {
3183 cifs_reconnect(server);
3184 wake_up(&server->response_q);
3188 if (server->ops->is_status_pending &&
3189 server->ops->is_status_pending(buf, server, 0))
3192 rdata->result = server->ops->map_error(buf, false);
3193 if (rdata->result != 0) {
3194 cifs_dbg(FYI, "%s: server returned error %d\n",
3195 __func__, rdata->result);
3196 dequeue_mid(mid, rdata->result);
3200 data_offset = server->ops->read_data_offset(buf);
3201 #ifdef CONFIG_CIFS_SMB_DIRECT
3202 use_rdma_mr = rdata->mr;
3204 data_len = server->ops->read_data_length(buf, use_rdma_mr);
3206 if (data_offset < server->vals->read_rsp_size) {
3208 * win2k8 sometimes sends an offset of 0 when the read
3209 * is beyond the EOF. Treat it as if the data starts just after
3212 cifs_dbg(FYI, "%s: data offset (%u) inside read response header\n",
3213 __func__, data_offset);
3214 data_offset = server->vals->read_rsp_size;
3215 } else if (data_offset > MAX_CIFS_SMALL_BUFFER_SIZE) {
3216 /* data_offset is beyond the end of smallbuf */
3217 cifs_dbg(FYI, "%s: data offset (%u) beyond end of smallbuf\n",
3218 __func__, data_offset);
3219 rdata->result = -EIO;
3220 dequeue_mid(mid, rdata->result);
3224 pad_len = data_offset - server->vals->read_rsp_size;
3226 if (buf_len <= data_offset) {
3227 /* read response payload is in pages */
3228 cur_page_idx = pad_len / PAGE_SIZE;
3229 cur_off = pad_len % PAGE_SIZE;
3231 if (cur_page_idx != 0) {
3232 /* data offset is beyond the 1st page of response */
3233 cifs_dbg(FYI, "%s: data offset (%u) beyond 1st page of response\n",
3234 __func__, data_offset);
3235 rdata->result = -EIO;
3236 dequeue_mid(mid, rdata->result);
3240 if (data_len > page_data_size - pad_len) {
3241 /* data_len is corrupt -- discard frame */
3242 rdata->result = -EIO;
3243 dequeue_mid(mid, rdata->result);
3247 rdata->result = init_read_bvec(pages, npages, page_data_size,
3249 if (rdata->result != 0) {
3250 dequeue_mid(mid, rdata->result);
3254 iov_iter_bvec(&iter, WRITE, bvec, npages, data_len);
3255 } else if (buf_len >= data_offset + data_len) {
3256 /* read response payload is in buf */
3257 WARN_ONCE(npages > 0, "read data can be either in buf or in pages");
3258 iov.iov_base = buf + data_offset;
3259 iov.iov_len = data_len;
3260 iov_iter_kvec(&iter, WRITE, &iov, 1, data_len);
3262 /* read response payload cannot be in both buf and pages */
3263 WARN_ONCE(1, "buf can not contain only a part of read data");
3264 rdata->result = -EIO;
3265 dequeue_mid(mid, rdata->result);
3269 /* set up first iov for signature check */
3270 rdata->iov[0].iov_base = buf;
3271 rdata->iov[0].iov_len = 4;
3272 rdata->iov[1].iov_base = buf + 4;
3273 rdata->iov[1].iov_len = server->vals->read_rsp_size - 4;
3274 cifs_dbg(FYI, "0: iov_base=%p iov_len=%zu\n",
3275 rdata->iov[0].iov_base, server->vals->read_rsp_size);
3277 length = rdata->copy_into_pages(server, rdata, &iter);
3284 dequeue_mid(mid, false);
3289 receive_encrypted_read(struct TCP_Server_Info *server, struct mid_q_entry **mid)
3291 char *buf = server->smallbuf;
3292 struct smb2_transform_hdr *tr_hdr = (struct smb2_transform_hdr *)buf;
3293 unsigned int npages;
3294 struct page **pages;
3296 unsigned int buflen = server->pdu_size;
3300 len = min_t(unsigned int, buflen, server->vals->read_rsp_size +
3301 sizeof(struct smb2_transform_hdr)) - HEADER_SIZE(server) + 1;
3303 rc = cifs_read_from_socket(server, buf + HEADER_SIZE(server) - 1, len);
3306 server->total_read += rc;
3308 len = le32_to_cpu(tr_hdr->OriginalMessageSize) -
3309 server->vals->read_rsp_size;
3310 npages = DIV_ROUND_UP(len, PAGE_SIZE);
3312 pages = kmalloc_array(npages, sizeof(struct page *), GFP_KERNEL);
3318 for (; i < npages; i++) {
3319 pages[i] = alloc_page(GFP_KERNEL|__GFP_HIGHMEM);
3326 /* read read data into pages */
3327 rc = read_data_into_pages(server, pages, npages, len);
3331 rc = cifs_discard_remaining_data(server);
3335 rc = decrypt_raw_data(server, buf, server->vals->read_rsp_size,
3336 pages, npages, len);
3340 *mid = smb2_find_mid(server, buf);
3342 cifs_dbg(FYI, "mid not found\n");
3344 cifs_dbg(FYI, "mid found\n");
3345 (*mid)->decrypted = true;
3346 rc = handle_read_data(server, *mid, buf,
3347 server->vals->read_rsp_size,
3348 pages, npages, len);
3352 for (i = i - 1; i >= 0; i--)
3357 cifs_discard_remaining_data(server);
3362 receive_encrypted_standard(struct TCP_Server_Info *server,
3363 struct mid_q_entry **mids, char **bufs,
3367 char *buf = server->smallbuf;
3369 struct smb2_sync_hdr *shdr;
3370 unsigned int pdu_length = server->pdu_size;
3371 unsigned int buf_size;
3372 struct mid_q_entry *mid_entry;
3374 char *next_buffer = NULL;
3378 /* switch to large buffer if too big for a small one */
3379 if (pdu_length > MAX_CIFS_SMALL_BUFFER_SIZE) {
3380 server->large_buf = true;
3381 memcpy(server->bigbuf, buf, server->total_read);
3382 buf = server->bigbuf;
3385 /* now read the rest */
3386 length = cifs_read_from_socket(server, buf + HEADER_SIZE(server) - 1,
3387 pdu_length - HEADER_SIZE(server) + 1);
3390 server->total_read += length;
3392 buf_size = pdu_length - sizeof(struct smb2_transform_hdr);
3393 length = decrypt_raw_data(server, buf, buf_size, NULL, 0, 0);
3397 next_is_large = server->large_buf;
3399 shdr = (struct smb2_sync_hdr *)buf;
3400 if (shdr->NextCommand) {
3401 if (next_is_large) {
3402 tmpbuf = server->bigbuf;
3403 next_buffer = (char *)cifs_buf_get();
3405 tmpbuf = server->smallbuf;
3406 next_buffer = (char *)cifs_small_buf_get();
3409 tmpbuf + le32_to_cpu(shdr->NextCommand),
3410 pdu_length - le32_to_cpu(shdr->NextCommand));
3413 mid_entry = smb2_find_mid(server, buf);
3414 if (mid_entry == NULL)
3415 cifs_dbg(FYI, "mid not found\n");
3417 cifs_dbg(FYI, "mid found\n");
3418 mid_entry->decrypted = true;
3419 mid_entry->resp_buf_size = server->pdu_size;
3422 if (*num_mids >= MAX_COMPOUND) {
3423 cifs_dbg(VFS, "too many PDUs in compound\n");
3426 bufs[*num_mids] = buf;
3427 mids[(*num_mids)++] = mid_entry;
3429 if (mid_entry && mid_entry->handle)
3430 ret = mid_entry->handle(server, mid_entry);
3432 ret = cifs_handle_standard(server, mid_entry);
3434 if (ret == 0 && shdr->NextCommand) {
3435 pdu_length -= le32_to_cpu(shdr->NextCommand);
3436 server->large_buf = next_is_large;
3438 server->bigbuf = next_buffer;
3440 server->smallbuf = next_buffer;
3442 buf += le32_to_cpu(shdr->NextCommand);
3450 smb3_receive_transform(struct TCP_Server_Info *server,
3451 struct mid_q_entry **mids, char **bufs, int *num_mids)
3453 char *buf = server->smallbuf;
3454 unsigned int pdu_length = server->pdu_size;
3455 struct smb2_transform_hdr *tr_hdr = (struct smb2_transform_hdr *)buf;
3456 unsigned int orig_len = le32_to_cpu(tr_hdr->OriginalMessageSize);
3458 if (pdu_length < sizeof(struct smb2_transform_hdr) +
3459 sizeof(struct smb2_sync_hdr)) {
3460 cifs_dbg(VFS, "Transform message is too small (%u)\n",
3462 cifs_reconnect(server);
3463 wake_up(&server->response_q);
3464 return -ECONNABORTED;
3467 if (pdu_length < orig_len + sizeof(struct smb2_transform_hdr)) {
3468 cifs_dbg(VFS, "Transform message is broken\n");
3469 cifs_reconnect(server);
3470 wake_up(&server->response_q);
3471 return -ECONNABORTED;
3474 /* TODO: add support for compounds containing READ. */
3475 if (pdu_length > CIFSMaxBufSize + MAX_HEADER_SIZE(server))
3476 return receive_encrypted_read(server, &mids[0]);
3478 return receive_encrypted_standard(server, mids, bufs, num_mids);
3482 smb3_handle_read_data(struct TCP_Server_Info *server, struct mid_q_entry *mid)
3484 char *buf = server->large_buf ? server->bigbuf : server->smallbuf;
3486 return handle_read_data(server, mid, buf, server->pdu_size,
3491 smb2_next_header(char *buf)
3493 struct smb2_sync_hdr *hdr = (struct smb2_sync_hdr *)buf;
3494 struct smb2_transform_hdr *t_hdr = (struct smb2_transform_hdr *)buf;
3496 if (hdr->ProtocolId == SMB2_TRANSFORM_PROTO_NUM)
3497 return sizeof(struct smb2_transform_hdr) +
3498 le32_to_cpu(t_hdr->OriginalMessageSize);
3500 return le32_to_cpu(hdr->NextCommand);
3503 struct smb_version_operations smb20_operations = {
3504 .compare_fids = smb2_compare_fids,
3505 .setup_request = smb2_setup_request,
3506 .setup_async_request = smb2_setup_async_request,
3507 .check_receive = smb2_check_receive,
3508 .add_credits = smb2_add_credits,
3509 .set_credits = smb2_set_credits,
3510 .get_credits_field = smb2_get_credits_field,
3511 .get_credits = smb2_get_credits,
3512 .wait_mtu_credits = cifs_wait_mtu_credits,
3513 .get_next_mid = smb2_get_next_mid,
3514 .read_data_offset = smb2_read_data_offset,
3515 .read_data_length = smb2_read_data_length,
3516 .map_error = map_smb2_to_linux_error,
3517 .find_mid = smb2_find_mid,
3518 .check_message = smb2_check_message,
3519 .dump_detail = smb2_dump_detail,
3520 .clear_stats = smb2_clear_stats,
3521 .print_stats = smb2_print_stats,
3522 .is_oplock_break = smb2_is_valid_oplock_break,
3523 .handle_cancelled_mid = smb2_handle_cancelled_mid,
3524 .downgrade_oplock = smb2_downgrade_oplock,
3525 .need_neg = smb2_need_neg,
3526 .negotiate = smb2_negotiate,
3527 .negotiate_wsize = smb2_negotiate_wsize,
3528 .negotiate_rsize = smb2_negotiate_rsize,
3529 .sess_setup = SMB2_sess_setup,
3530 .logoff = SMB2_logoff,
3531 .tree_connect = SMB2_tcon,
3532 .tree_disconnect = SMB2_tdis,
3533 .qfs_tcon = smb2_qfs_tcon,
3534 .is_path_accessible = smb2_is_path_accessible,
3535 .can_echo = smb2_can_echo,
3537 .query_path_info = smb2_query_path_info,
3538 .get_srv_inum = smb2_get_srv_inum,
3539 .query_file_info = smb2_query_file_info,
3540 .set_path_size = smb2_set_path_size,
3541 .set_file_size = smb2_set_file_size,
3542 .set_file_info = smb2_set_file_info,
3543 .set_compression = smb2_set_compression,
3544 .mkdir = smb2_mkdir,
3545 .mkdir_setinfo = smb2_mkdir_setinfo,
3546 .rmdir = smb2_rmdir,
3547 .unlink = smb2_unlink,
3548 .rename = smb2_rename_path,
3549 .create_hardlink = smb2_create_hardlink,
3550 .query_symlink = smb2_query_symlink,
3551 .query_mf_symlink = smb3_query_mf_symlink,
3552 .create_mf_symlink = smb3_create_mf_symlink,
3553 .open = smb2_open_file,
3554 .set_fid = smb2_set_fid,
3555 .close = smb2_close_file,
3556 .flush = smb2_flush_file,
3557 .async_readv = smb2_async_readv,
3558 .async_writev = smb2_async_writev,
3559 .sync_read = smb2_sync_read,
3560 .sync_write = smb2_sync_write,
3561 .query_dir_first = smb2_query_dir_first,
3562 .query_dir_next = smb2_query_dir_next,
3563 .close_dir = smb2_close_dir,
3564 .calc_smb_size = smb2_calc_size,
3565 .is_status_pending = smb2_is_status_pending,
3566 .is_session_expired = smb2_is_session_expired,
3567 .oplock_response = smb2_oplock_response,
3568 .queryfs = smb2_queryfs,
3569 .mand_lock = smb2_mand_lock,
3570 .mand_unlock_range = smb2_unlock_range,
3571 .push_mand_locks = smb2_push_mandatory_locks,
3572 .get_lease_key = smb2_get_lease_key,
3573 .set_lease_key = smb2_set_lease_key,
3574 .new_lease_key = smb2_new_lease_key,
3575 .calc_signature = smb2_calc_signature,
3576 .is_read_op = smb2_is_read_op,
3577 .set_oplock_level = smb2_set_oplock_level,
3578 .create_lease_buf = smb2_create_lease_buf,
3579 .parse_lease_buf = smb2_parse_lease_buf,
3580 .copychunk_range = smb2_copychunk_range,
3581 .wp_retry_size = smb2_wp_retry_size,
3582 .dir_needs_close = smb2_dir_needs_close,
3583 .get_dfs_refer = smb2_get_dfs_refer,
3584 .select_sectype = smb2_select_sectype,
3585 #ifdef CONFIG_CIFS_XATTR
3586 .query_all_EAs = smb2_query_eas,
3587 .set_EA = smb2_set_ea,
3588 #endif /* CIFS_XATTR */
3589 #ifdef CONFIG_CIFS_ACL
3590 .get_acl = get_smb2_acl,
3591 .get_acl_by_fid = get_smb2_acl_by_fid,
3592 .set_acl = set_smb2_acl,
3593 #endif /* CIFS_ACL */
3594 .next_header = smb2_next_header,
3595 .ioctl_query_info = smb2_ioctl_query_info,
3598 struct smb_version_operations smb21_operations = {
3599 .compare_fids = smb2_compare_fids,
3600 .setup_request = smb2_setup_request,
3601 .setup_async_request = smb2_setup_async_request,
3602 .check_receive = smb2_check_receive,
3603 .add_credits = smb2_add_credits,
3604 .set_credits = smb2_set_credits,
3605 .get_credits_field = smb2_get_credits_field,
3606 .get_credits = smb2_get_credits,
3607 .wait_mtu_credits = smb2_wait_mtu_credits,
3608 .get_next_mid = smb2_get_next_mid,
3609 .read_data_offset = smb2_read_data_offset,
3610 .read_data_length = smb2_read_data_length,
3611 .map_error = map_smb2_to_linux_error,
3612 .find_mid = smb2_find_mid,
3613 .check_message = smb2_check_message,
3614 .dump_detail = smb2_dump_detail,
3615 .clear_stats = smb2_clear_stats,
3616 .print_stats = smb2_print_stats,
3617 .is_oplock_break = smb2_is_valid_oplock_break,
3618 .handle_cancelled_mid = smb2_handle_cancelled_mid,
3619 .downgrade_oplock = smb2_downgrade_oplock,
3620 .need_neg = smb2_need_neg,
3621 .negotiate = smb2_negotiate,
3622 .negotiate_wsize = smb2_negotiate_wsize,
3623 .negotiate_rsize = smb2_negotiate_rsize,
3624 .sess_setup = SMB2_sess_setup,
3625 .logoff = SMB2_logoff,
3626 .tree_connect = SMB2_tcon,
3627 .tree_disconnect = SMB2_tdis,
3628 .qfs_tcon = smb2_qfs_tcon,
3629 .is_path_accessible = smb2_is_path_accessible,
3630 .can_echo = smb2_can_echo,
3632 .query_path_info = smb2_query_path_info,
3633 .get_srv_inum = smb2_get_srv_inum,
3634 .query_file_info = smb2_query_file_info,
3635 .set_path_size = smb2_set_path_size,
3636 .set_file_size = smb2_set_file_size,
3637 .set_file_info = smb2_set_file_info,
3638 .set_compression = smb2_set_compression,
3639 .mkdir = smb2_mkdir,
3640 .mkdir_setinfo = smb2_mkdir_setinfo,
3641 .rmdir = smb2_rmdir,
3642 .unlink = smb2_unlink,
3643 .rename = smb2_rename_path,
3644 .create_hardlink = smb2_create_hardlink,
3645 .query_symlink = smb2_query_symlink,
3646 .query_mf_symlink = smb3_query_mf_symlink,
3647 .create_mf_symlink = smb3_create_mf_symlink,
3648 .open = smb2_open_file,
3649 .set_fid = smb2_set_fid,
3650 .close = smb2_close_file,
3651 .flush = smb2_flush_file,
3652 .async_readv = smb2_async_readv,
3653 .async_writev = smb2_async_writev,
3654 .sync_read = smb2_sync_read,
3655 .sync_write = smb2_sync_write,
3656 .query_dir_first = smb2_query_dir_first,
3657 .query_dir_next = smb2_query_dir_next,
3658 .close_dir = smb2_close_dir,
3659 .calc_smb_size = smb2_calc_size,
3660 .is_status_pending = smb2_is_status_pending,
3661 .is_session_expired = smb2_is_session_expired,
3662 .oplock_response = smb2_oplock_response,
3663 .queryfs = smb2_queryfs,
3664 .mand_lock = smb2_mand_lock,
3665 .mand_unlock_range = smb2_unlock_range,
3666 .push_mand_locks = smb2_push_mandatory_locks,
3667 .get_lease_key = smb2_get_lease_key,
3668 .set_lease_key = smb2_set_lease_key,
3669 .new_lease_key = smb2_new_lease_key,
3670 .calc_signature = smb2_calc_signature,
3671 .is_read_op = smb21_is_read_op,
3672 .set_oplock_level = smb21_set_oplock_level,
3673 .create_lease_buf = smb2_create_lease_buf,
3674 .parse_lease_buf = smb2_parse_lease_buf,
3675 .copychunk_range = smb2_copychunk_range,
3676 .wp_retry_size = smb2_wp_retry_size,
3677 .dir_needs_close = smb2_dir_needs_close,
3678 .enum_snapshots = smb3_enum_snapshots,
3679 .get_dfs_refer = smb2_get_dfs_refer,
3680 .select_sectype = smb2_select_sectype,
3681 #ifdef CONFIG_CIFS_XATTR
3682 .query_all_EAs = smb2_query_eas,
3683 .set_EA = smb2_set_ea,
3684 #endif /* CIFS_XATTR */
3685 #ifdef CONFIG_CIFS_ACL
3686 .get_acl = get_smb2_acl,
3687 .get_acl_by_fid = get_smb2_acl_by_fid,
3688 .set_acl = set_smb2_acl,
3689 #endif /* CIFS_ACL */
3690 .next_header = smb2_next_header,
3691 .ioctl_query_info = smb2_ioctl_query_info,
3694 struct smb_version_operations smb30_operations = {
3695 .compare_fids = smb2_compare_fids,
3696 .setup_request = smb2_setup_request,
3697 .setup_async_request = smb2_setup_async_request,
3698 .check_receive = smb2_check_receive,
3699 .add_credits = smb2_add_credits,
3700 .set_credits = smb2_set_credits,
3701 .get_credits_field = smb2_get_credits_field,
3702 .get_credits = smb2_get_credits,
3703 .wait_mtu_credits = smb2_wait_mtu_credits,
3704 .get_next_mid = smb2_get_next_mid,
3705 .read_data_offset = smb2_read_data_offset,
3706 .read_data_length = smb2_read_data_length,
3707 .map_error = map_smb2_to_linux_error,
3708 .find_mid = smb2_find_mid,
3709 .check_message = smb2_check_message,
3710 .dump_detail = smb2_dump_detail,
3711 .clear_stats = smb2_clear_stats,
3712 .print_stats = smb2_print_stats,
3713 .dump_share_caps = smb2_dump_share_caps,
3714 .is_oplock_break = smb2_is_valid_oplock_break,
3715 .handle_cancelled_mid = smb2_handle_cancelled_mid,
3716 .downgrade_oplock = smb2_downgrade_oplock,
3717 .need_neg = smb2_need_neg,
3718 .negotiate = smb2_negotiate,
3719 .negotiate_wsize = smb3_negotiate_wsize,
3720 .negotiate_rsize = smb3_negotiate_rsize,
3721 .sess_setup = SMB2_sess_setup,
3722 .logoff = SMB2_logoff,
3723 .tree_connect = SMB2_tcon,
3724 .tree_disconnect = SMB2_tdis,
3725 .qfs_tcon = smb3_qfs_tcon,
3726 .is_path_accessible = smb2_is_path_accessible,
3727 .can_echo = smb2_can_echo,
3729 .query_path_info = smb2_query_path_info,
3730 .get_srv_inum = smb2_get_srv_inum,
3731 .query_file_info = smb2_query_file_info,
3732 .set_path_size = smb2_set_path_size,
3733 .set_file_size = smb2_set_file_size,
3734 .set_file_info = smb2_set_file_info,
3735 .set_compression = smb2_set_compression,
3736 .mkdir = smb2_mkdir,
3737 .mkdir_setinfo = smb2_mkdir_setinfo,
3738 .rmdir = smb2_rmdir,
3739 .unlink = smb2_unlink,
3740 .rename = smb2_rename_path,
3741 .create_hardlink = smb2_create_hardlink,
3742 .query_symlink = smb2_query_symlink,
3743 .query_mf_symlink = smb3_query_mf_symlink,
3744 .create_mf_symlink = smb3_create_mf_symlink,
3745 .open = smb2_open_file,
3746 .set_fid = smb2_set_fid,
3747 .close = smb2_close_file,
3748 .flush = smb2_flush_file,
3749 .async_readv = smb2_async_readv,
3750 .async_writev = smb2_async_writev,
3751 .sync_read = smb2_sync_read,
3752 .sync_write = smb2_sync_write,
3753 .query_dir_first = smb2_query_dir_first,
3754 .query_dir_next = smb2_query_dir_next,
3755 .close_dir = smb2_close_dir,
3756 .calc_smb_size = smb2_calc_size,
3757 .is_status_pending = smb2_is_status_pending,
3758 .is_session_expired = smb2_is_session_expired,
3759 .oplock_response = smb2_oplock_response,
3760 .queryfs = smb2_queryfs,
3761 .mand_lock = smb2_mand_lock,
3762 .mand_unlock_range = smb2_unlock_range,
3763 .push_mand_locks = smb2_push_mandatory_locks,
3764 .get_lease_key = smb2_get_lease_key,
3765 .set_lease_key = smb2_set_lease_key,
3766 .new_lease_key = smb2_new_lease_key,
3767 .generate_signingkey = generate_smb30signingkey,
3768 .calc_signature = smb3_calc_signature,
3769 .set_integrity = smb3_set_integrity,
3770 .is_read_op = smb21_is_read_op,
3771 .set_oplock_level = smb3_set_oplock_level,
3772 .create_lease_buf = smb3_create_lease_buf,
3773 .parse_lease_buf = smb3_parse_lease_buf,
3774 .copychunk_range = smb2_copychunk_range,
3775 .duplicate_extents = smb2_duplicate_extents,
3776 .validate_negotiate = smb3_validate_negotiate,
3777 .wp_retry_size = smb2_wp_retry_size,
3778 .dir_needs_close = smb2_dir_needs_close,
3779 .fallocate = smb3_fallocate,
3780 .enum_snapshots = smb3_enum_snapshots,
3781 .init_transform_rq = smb3_init_transform_rq,
3782 .is_transform_hdr = smb3_is_transform_hdr,
3783 .receive_transform = smb3_receive_transform,
3784 .get_dfs_refer = smb2_get_dfs_refer,
3785 .select_sectype = smb2_select_sectype,
3786 #ifdef CONFIG_CIFS_XATTR
3787 .query_all_EAs = smb2_query_eas,
3788 .set_EA = smb2_set_ea,
3789 #endif /* CIFS_XATTR */
3790 #ifdef CONFIG_CIFS_ACL
3791 .get_acl = get_smb2_acl,
3792 .get_acl_by_fid = get_smb2_acl_by_fid,
3793 .set_acl = set_smb2_acl,
3794 #endif /* CIFS_ACL */
3795 .next_header = smb2_next_header,
3796 .ioctl_query_info = smb2_ioctl_query_info,
3799 struct smb_version_operations smb311_operations = {
3800 .compare_fids = smb2_compare_fids,
3801 .setup_request = smb2_setup_request,
3802 .setup_async_request = smb2_setup_async_request,
3803 .check_receive = smb2_check_receive,
3804 .add_credits = smb2_add_credits,
3805 .set_credits = smb2_set_credits,
3806 .get_credits_field = smb2_get_credits_field,
3807 .get_credits = smb2_get_credits,
3808 .wait_mtu_credits = smb2_wait_mtu_credits,
3809 .get_next_mid = smb2_get_next_mid,
3810 .read_data_offset = smb2_read_data_offset,
3811 .read_data_length = smb2_read_data_length,
3812 .map_error = map_smb2_to_linux_error,
3813 .find_mid = smb2_find_mid,
3814 .check_message = smb2_check_message,
3815 .dump_detail = smb2_dump_detail,
3816 .clear_stats = smb2_clear_stats,
3817 .print_stats = smb2_print_stats,
3818 .dump_share_caps = smb2_dump_share_caps,
3819 .is_oplock_break = smb2_is_valid_oplock_break,
3820 .handle_cancelled_mid = smb2_handle_cancelled_mid,
3821 .downgrade_oplock = smb2_downgrade_oplock,
3822 .need_neg = smb2_need_neg,
3823 .negotiate = smb2_negotiate,
3824 .negotiate_wsize = smb3_negotiate_wsize,
3825 .negotiate_rsize = smb3_negotiate_rsize,
3826 .sess_setup = SMB2_sess_setup,
3827 .logoff = SMB2_logoff,
3828 .tree_connect = SMB2_tcon,
3829 .tree_disconnect = SMB2_tdis,
3830 .qfs_tcon = smb3_qfs_tcon,
3831 .is_path_accessible = smb2_is_path_accessible,
3832 .can_echo = smb2_can_echo,
3834 .query_path_info = smb2_query_path_info,
3835 .get_srv_inum = smb2_get_srv_inum,
3836 .query_file_info = smb2_query_file_info,
3837 .set_path_size = smb2_set_path_size,
3838 .set_file_size = smb2_set_file_size,
3839 .set_file_info = smb2_set_file_info,
3840 .set_compression = smb2_set_compression,
3841 .mkdir = smb2_mkdir,
3842 .mkdir_setinfo = smb2_mkdir_setinfo,
3843 .posix_mkdir = smb311_posix_mkdir,
3844 .rmdir = smb2_rmdir,
3845 .unlink = smb2_unlink,
3846 .rename = smb2_rename_path,
3847 .create_hardlink = smb2_create_hardlink,
3848 .query_symlink = smb2_query_symlink,
3849 .query_mf_symlink = smb3_query_mf_symlink,
3850 .create_mf_symlink = smb3_create_mf_symlink,
3851 .open = smb2_open_file,
3852 .set_fid = smb2_set_fid,
3853 .close = smb2_close_file,
3854 .flush = smb2_flush_file,
3855 .async_readv = smb2_async_readv,
3856 .async_writev = smb2_async_writev,
3857 .sync_read = smb2_sync_read,
3858 .sync_write = smb2_sync_write,
3859 .query_dir_first = smb2_query_dir_first,
3860 .query_dir_next = smb2_query_dir_next,
3861 .close_dir = smb2_close_dir,
3862 .calc_smb_size = smb2_calc_size,
3863 .is_status_pending = smb2_is_status_pending,
3864 .is_session_expired = smb2_is_session_expired,
3865 .oplock_response = smb2_oplock_response,
3866 .queryfs = smb311_queryfs,
3867 .mand_lock = smb2_mand_lock,
3868 .mand_unlock_range = smb2_unlock_range,
3869 .push_mand_locks = smb2_push_mandatory_locks,
3870 .get_lease_key = smb2_get_lease_key,
3871 .set_lease_key = smb2_set_lease_key,
3872 .new_lease_key = smb2_new_lease_key,
3873 .generate_signingkey = generate_smb311signingkey,
3874 .calc_signature = smb3_calc_signature,
3875 .set_integrity = smb3_set_integrity,
3876 .is_read_op = smb21_is_read_op,
3877 .set_oplock_level = smb3_set_oplock_level,
3878 .create_lease_buf = smb3_create_lease_buf,
3879 .parse_lease_buf = smb3_parse_lease_buf,
3880 .copychunk_range = smb2_copychunk_range,
3881 .duplicate_extents = smb2_duplicate_extents,
3882 /* .validate_negotiate = smb3_validate_negotiate, */ /* not used in 3.11 */
3883 .wp_retry_size = smb2_wp_retry_size,
3884 .dir_needs_close = smb2_dir_needs_close,
3885 .fallocate = smb3_fallocate,
3886 .enum_snapshots = smb3_enum_snapshots,
3887 .init_transform_rq = smb3_init_transform_rq,
3888 .is_transform_hdr = smb3_is_transform_hdr,
3889 .receive_transform = smb3_receive_transform,
3890 .get_dfs_refer = smb2_get_dfs_refer,
3891 .select_sectype = smb2_select_sectype,
3892 #ifdef CONFIG_CIFS_XATTR
3893 .query_all_EAs = smb2_query_eas,
3894 .set_EA = smb2_set_ea,
3895 #endif /* CIFS_XATTR */
3896 #ifdef CONFIG_CIFS_ACL
3897 .get_acl = get_smb2_acl,
3898 .get_acl_by_fid = get_smb2_acl_by_fid,
3899 .set_acl = set_smb2_acl,
3900 #endif /* CIFS_ACL */
3901 .next_header = smb2_next_header,
3902 .ioctl_query_info = smb2_ioctl_query_info,
3905 struct smb_version_values smb20_values = {
3906 .version_string = SMB20_VERSION_STRING,
3907 .protocol_id = SMB20_PROT_ID,
3908 .req_capabilities = 0, /* MBZ */
3909 .large_lock_type = 0,
3910 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
3911 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
3912 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
3913 .header_size = sizeof(struct smb2_sync_hdr),
3914 .header_preamble_size = 0,
3915 .max_header_size = MAX_SMB2_HDR_SIZE,
3916 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
3917 .lock_cmd = SMB2_LOCK,
3919 .cap_nt_find = SMB2_NT_FIND,
3920 .cap_large_files = SMB2_LARGE_FILES,
3921 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
3922 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
3923 .create_lease_size = sizeof(struct create_lease),
3926 struct smb_version_values smb21_values = {
3927 .version_string = SMB21_VERSION_STRING,
3928 .protocol_id = SMB21_PROT_ID,
3929 .req_capabilities = 0, /* MBZ on negotiate req until SMB3 dialect */
3930 .large_lock_type = 0,
3931 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
3932 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
3933 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
3934 .header_size = sizeof(struct smb2_sync_hdr),
3935 .header_preamble_size = 0,
3936 .max_header_size = MAX_SMB2_HDR_SIZE,
3937 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
3938 .lock_cmd = SMB2_LOCK,
3940 .cap_nt_find = SMB2_NT_FIND,
3941 .cap_large_files = SMB2_LARGE_FILES,
3942 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
3943 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
3944 .create_lease_size = sizeof(struct create_lease),
3947 struct smb_version_values smb3any_values = {
3948 .version_string = SMB3ANY_VERSION_STRING,
3949 .protocol_id = SMB302_PROT_ID, /* doesn't matter, send protocol array */
3950 .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,
3951 .large_lock_type = 0,
3952 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
3953 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
3954 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
3955 .header_size = sizeof(struct smb2_sync_hdr),
3956 .header_preamble_size = 0,
3957 .max_header_size = MAX_SMB2_HDR_SIZE,
3958 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
3959 .lock_cmd = SMB2_LOCK,
3961 .cap_nt_find = SMB2_NT_FIND,
3962 .cap_large_files = SMB2_LARGE_FILES,
3963 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
3964 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
3965 .create_lease_size = sizeof(struct create_lease_v2),
3968 struct smb_version_values smbdefault_values = {
3969 .version_string = SMBDEFAULT_VERSION_STRING,
3970 .protocol_id = SMB302_PROT_ID, /* doesn't matter, send protocol array */
3971 .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,
3972 .large_lock_type = 0,
3973 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
3974 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
3975 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
3976 .header_size = sizeof(struct smb2_sync_hdr),
3977 .header_preamble_size = 0,
3978 .max_header_size = MAX_SMB2_HDR_SIZE,
3979 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
3980 .lock_cmd = SMB2_LOCK,
3982 .cap_nt_find = SMB2_NT_FIND,
3983 .cap_large_files = SMB2_LARGE_FILES,
3984 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
3985 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
3986 .create_lease_size = sizeof(struct create_lease_v2),
3989 struct smb_version_values smb30_values = {
3990 .version_string = SMB30_VERSION_STRING,
3991 .protocol_id = SMB30_PROT_ID,
3992 .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,
3993 .large_lock_type = 0,
3994 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
3995 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
3996 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
3997 .header_size = sizeof(struct smb2_sync_hdr),
3998 .header_preamble_size = 0,
3999 .max_header_size = MAX_SMB2_HDR_SIZE,
4000 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
4001 .lock_cmd = SMB2_LOCK,
4003 .cap_nt_find = SMB2_NT_FIND,
4004 .cap_large_files = SMB2_LARGE_FILES,
4005 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
4006 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
4007 .create_lease_size = sizeof(struct create_lease_v2),
4010 struct smb_version_values smb302_values = {
4011 .version_string = SMB302_VERSION_STRING,
4012 .protocol_id = SMB302_PROT_ID,
4013 .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,
4014 .large_lock_type = 0,
4015 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
4016 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
4017 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
4018 .header_size = sizeof(struct smb2_sync_hdr),
4019 .header_preamble_size = 0,
4020 .max_header_size = MAX_SMB2_HDR_SIZE,
4021 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
4022 .lock_cmd = SMB2_LOCK,
4024 .cap_nt_find = SMB2_NT_FIND,
4025 .cap_large_files = SMB2_LARGE_FILES,
4026 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
4027 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
4028 .create_lease_size = sizeof(struct create_lease_v2),
4031 struct smb_version_values smb311_values = {
4032 .version_string = SMB311_VERSION_STRING,
4033 .protocol_id = SMB311_PROT_ID,
4034 .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,
4035 .large_lock_type = 0,
4036 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
4037 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
4038 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
4039 .header_size = sizeof(struct smb2_sync_hdr),
4040 .header_preamble_size = 0,
4041 .max_header_size = MAX_SMB2_HDR_SIZE,
4042 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
4043 .lock_cmd = SMB2_LOCK,
4045 .cap_nt_find = SMB2_NT_FIND,
4046 .cap_large_files = SMB2_LARGE_FILES,
4047 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
4048 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
4049 .create_lease_size = sizeof(struct create_lease_v2),