blob: 93fd0586f9ec6e661c17de59cb66535d80e7ff51 [file] [log] [blame]
Steve French1080ef72011-02-24 18:07:19 +00001/*
2 * SMB2 version specific operations
3 *
4 * Copyright (c) 2012, Jeff Layton <jlayton@redhat.com>
5 *
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.
9 *
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.
14 *
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
18 */
19
Pavel Shilovsky3a3bab52012-09-18 16:20:28 -070020#include <linux/pagemap.h>
Pavel Shilovsky6fc05c22012-09-18 16:20:34 -070021#include <linux/vfs.h>
Steve Frenchf29ebb42014-07-19 21:44:58 -050022#include <linux/falloc.h>
Steve French1080ef72011-02-24 18:07:19 +000023#include "cifsglob.h"
Pavel Shilovsky2dc7e1c2011-12-26 22:53:34 +040024#include "smb2pdu.h"
25#include "smb2proto.h"
Pavel Shilovsky28ea5292012-05-23 16:18:00 +040026#include "cifsproto.h"
27#include "cifs_debug.h"
Pavel Shilovskyb42bf882013-08-14 19:25:21 +040028#include "cifs_unicode.h"
Pavel Shilovsky2e44b282012-09-18 16:20:33 -070029#include "smb2status.h"
Pavel Shilovsky6fc05c22012-09-18 16:20:34 -070030#include "smb2glob.h"
Pavel Shilovsky28ea5292012-05-23 16:18:00 +040031
32static int
33change_conf(struct TCP_Server_Info *server)
34{
35 server->credits += server->echo_credits + server->oplock_credits;
36 server->oplock_credits = server->echo_credits = 0;
37 switch (server->credits) {
38 case 0:
39 return -1;
40 case 1:
41 server->echoes = false;
42 server->oplocks = false;
Joe Perchesf96637b2013-05-04 22:12:25 -050043 cifs_dbg(VFS, "disabling echoes and oplocks\n");
Pavel Shilovsky28ea5292012-05-23 16:18:00 +040044 break;
45 case 2:
46 server->echoes = true;
47 server->oplocks = false;
48 server->echo_credits = 1;
Joe Perchesf96637b2013-05-04 22:12:25 -050049 cifs_dbg(FYI, "disabling oplocks\n");
Pavel Shilovsky28ea5292012-05-23 16:18:00 +040050 break;
51 default:
52 server->echoes = true;
53 server->oplocks = true;
54 server->echo_credits = 1;
55 server->oplock_credits = 1;
56 }
57 server->credits -= server->echo_credits + server->oplock_credits;
58 return 0;
59}
60
61static void
62smb2_add_credits(struct TCP_Server_Info *server, const unsigned int add,
63 const int optype)
64{
65 int *val, rc = 0;
66 spin_lock(&server->req_lock);
67 val = server->ops->get_credits_field(server, optype);
68 *val += add;
69 server->in_flight--;
Pavel Shilovskyec2e4522011-12-27 16:12:43 +040070 if (server->in_flight == 0 && (optype & CIFS_OP_MASK) != CIFS_NEG_OP)
Pavel Shilovsky28ea5292012-05-23 16:18:00 +040071 rc = change_conf(server);
Pavel Shilovsky983c88a2012-09-18 16:20:33 -070072 /*
73 * Sometimes server returns 0 credits on oplock break ack - we need to
74 * rebalance credits in this case.
75 */
76 else if (server->in_flight > 0 && server->oplock_credits == 0 &&
77 server->oplocks) {
78 if (server->credits > 1) {
79 server->credits--;
80 server->oplock_credits++;
81 }
82 }
Pavel Shilovsky28ea5292012-05-23 16:18:00 +040083 spin_unlock(&server->req_lock);
84 wake_up(&server->request_q);
85 if (rc)
86 cifs_reconnect(server);
87}
88
89static void
90smb2_set_credits(struct TCP_Server_Info *server, const int val)
91{
92 spin_lock(&server->req_lock);
93 server->credits = val;
94 spin_unlock(&server->req_lock);
95}
96
97static int *
98smb2_get_credits_field(struct TCP_Server_Info *server, const int optype)
99{
100 switch (optype) {
101 case CIFS_ECHO_OP:
102 return &server->echo_credits;
103 case CIFS_OBREAK_OP:
104 return &server->oplock_credits;
105 default:
106 return &server->credits;
107 }
108}
109
110static unsigned int
111smb2_get_credits(struct mid_q_entry *mid)
112{
113 return le16_to_cpu(((struct smb2_hdr *)mid->resp_buf)->CreditRequest);
114}
Pavel Shilovsky2dc7e1c2011-12-26 22:53:34 +0400115
Pavel Shilovskycb7e9ea2014-06-05 19:03:27 +0400116static int
117smb2_wait_mtu_credits(struct TCP_Server_Info *server, unsigned int size,
118 unsigned int *num, unsigned int *credits)
119{
120 int rc = 0;
121 unsigned int scredits;
122
123 spin_lock(&server->req_lock);
124 while (1) {
125 if (server->credits <= 0) {
126 spin_unlock(&server->req_lock);
127 cifs_num_waiters_inc(server);
128 rc = wait_event_killable(server->request_q,
129 has_credits(server, &server->credits));
130 cifs_num_waiters_dec(server);
131 if (rc)
132 return rc;
133 spin_lock(&server->req_lock);
134 } else {
135 if (server->tcpStatus == CifsExiting) {
136 spin_unlock(&server->req_lock);
137 return -ENOENT;
138 }
139
140 scredits = server->credits;
141 /* can deadlock with reopen */
142 if (scredits == 1) {
143 *num = SMB2_MAX_BUFFER_SIZE;
144 *credits = 0;
145 break;
146 }
147
148 /* leave one credit for a possible reopen */
149 scredits--;
150 *num = min_t(unsigned int, size,
151 scredits * SMB2_MAX_BUFFER_SIZE);
152
153 *credits = DIV_ROUND_UP(*num, SMB2_MAX_BUFFER_SIZE);
154 server->credits -= *credits;
155 server->in_flight++;
156 break;
157 }
158 }
159 spin_unlock(&server->req_lock);
160 return rc;
161}
162
Pavel Shilovsky2dc7e1c2011-12-26 22:53:34 +0400163static __u64
164smb2_get_next_mid(struct TCP_Server_Info *server)
165{
166 __u64 mid;
167 /* for SMB2 we need the current value */
168 spin_lock(&GlobalMid_Lock);
169 mid = server->CurrentMid++;
170 spin_unlock(&GlobalMid_Lock);
171 return mid;
172}
Steve French1080ef72011-02-24 18:07:19 +0000173
Pavel Shilovsky093b2bd2011-06-08 15:51:07 +0400174static struct mid_q_entry *
175smb2_find_mid(struct TCP_Server_Info *server, char *buf)
176{
177 struct mid_q_entry *mid;
178 struct smb2_hdr *hdr = (struct smb2_hdr *)buf;
179
180 spin_lock(&GlobalMid_Lock);
181 list_for_each_entry(mid, &server->pending_mid_q, qhead) {
182 if ((mid->mid == hdr->MessageId) &&
183 (mid->mid_state == MID_REQUEST_SUBMITTED) &&
184 (mid->command == hdr->Command)) {
185 spin_unlock(&GlobalMid_Lock);
186 return mid;
187 }
188 }
189 spin_unlock(&GlobalMid_Lock);
190 return NULL;
191}
192
193static void
194smb2_dump_detail(void *buf)
195{
196#ifdef CONFIG_CIFS_DEBUG2
197 struct smb2_hdr *smb = (struct smb2_hdr *)buf;
198
Joe Perchesf96637b2013-05-04 22:12:25 -0500199 cifs_dbg(VFS, "Cmd: %d Err: 0x%x Flags: 0x%x Mid: %llu Pid: %d\n",
200 smb->Command, smb->Status, smb->Flags, smb->MessageId,
201 smb->ProcessId);
202 cifs_dbg(VFS, "smb buf %p len %u\n", smb, smb2_calc_size(smb));
Pavel Shilovsky093b2bd2011-06-08 15:51:07 +0400203#endif
204}
205
Pavel Shilovskyec2e4522011-12-27 16:12:43 +0400206static bool
207smb2_need_neg(struct TCP_Server_Info *server)
208{
209 return server->max_read == 0;
210}
211
212static int
213smb2_negotiate(const unsigned int xid, struct cifs_ses *ses)
214{
215 int rc;
216 ses->server->CurrentMid = 0;
217 rc = SMB2_negotiate(xid, ses);
218 /* BB we probably don't need to retry with modern servers */
219 if (rc == -EAGAIN)
220 rc = -EHOSTDOWN;
221 return rc;
222}
223
Pavel Shilovsky3a3bab52012-09-18 16:20:28 -0700224static unsigned int
225smb2_negotiate_wsize(struct cifs_tcon *tcon, struct smb_vol *volume_info)
226{
227 struct TCP_Server_Info *server = tcon->ses->server;
228 unsigned int wsize;
229
230 /* start with specified wsize, or default */
231 wsize = volume_info->wsize ? volume_info->wsize : CIFS_DEFAULT_IOSIZE;
232 wsize = min_t(unsigned int, wsize, server->max_write);
Pavel Shilovskycb7e9ea2014-06-05 19:03:27 +0400233
234 if (!(server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU))
235 wsize = min_t(unsigned int, wsize, SMB2_MAX_BUFFER_SIZE);
Pavel Shilovsky3a3bab52012-09-18 16:20:28 -0700236
Pavel Shilovsky3a3bab52012-09-18 16:20:28 -0700237 return wsize;
238}
239
240static unsigned int
241smb2_negotiate_rsize(struct cifs_tcon *tcon, struct smb_vol *volume_info)
242{
243 struct TCP_Server_Info *server = tcon->ses->server;
244 unsigned int rsize;
245
246 /* start with specified rsize, or default */
247 rsize = volume_info->rsize ? volume_info->rsize : CIFS_DEFAULT_IOSIZE;
248 rsize = min_t(unsigned int, rsize, server->max_read);
Pavel Shilovskybed9da02014-06-25 11:28:57 +0400249
250 if (!(server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU))
251 rsize = min_t(unsigned int, rsize, SMB2_MAX_BUFFER_SIZE);
Pavel Shilovsky3a3bab52012-09-18 16:20:28 -0700252
Pavel Shilovsky3a3bab52012-09-18 16:20:28 -0700253 return rsize;
254}
255
Steve Frenchc481e9f2013-10-14 01:21:53 -0500256#ifdef CONFIG_CIFS_STATS2
257static int
258SMB3_request_interfaces(const unsigned int xid, struct cifs_tcon *tcon)
259{
260 int rc;
261 unsigned int ret_data_len = 0;
262 struct network_interface_info_ioctl_rsp *out_buf;
263
264 rc = SMB2_ioctl(xid, tcon, NO_FILE_ID, NO_FILE_ID,
265 FSCTL_QUERY_NETWORK_INTERFACE_INFO, true /* is_fsctl */,
266 NULL /* no data input */, 0 /* no data input */,
267 (char **)&out_buf, &ret_data_len);
Steve French9ffc5412014-10-16 15:13:14 -0500268 if (rc != 0)
269 cifs_dbg(VFS, "error %d on ioctl to get interface list\n", rc);
270 else if (ret_data_len < sizeof(struct network_interface_info_ioctl_rsp)) {
271 cifs_dbg(VFS, "server returned bad net interface info buf\n");
272 rc = -EINVAL;
273 } else {
Steve Frenchc481e9f2013-10-14 01:21:53 -0500274 /* Dump info on first interface */
275 cifs_dbg(FYI, "Adapter Capability 0x%x\t",
276 le32_to_cpu(out_buf->Capability));
277 cifs_dbg(FYI, "Link Speed %lld\n",
278 le64_to_cpu(out_buf->LinkSpeed));
Steve French9ffc5412014-10-16 15:13:14 -0500279 }
Steve Frenchc481e9f2013-10-14 01:21:53 -0500280
281 return rc;
282}
283#endif /* STATS2 */
284
Steve French34f62642013-10-09 02:07:00 -0500285static void
Steven Frenchaf6a12e2013-10-09 20:55:53 -0500286smb3_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon)
287{
288 int rc;
289 __le16 srch_path = 0; /* Null - open root of share */
290 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
291 struct cifs_open_parms oparms;
292 struct cifs_fid fid;
293
294 oparms.tcon = tcon;
295 oparms.desired_access = FILE_READ_ATTRIBUTES;
296 oparms.disposition = FILE_OPEN;
297 oparms.create_options = 0;
298 oparms.fid = &fid;
299 oparms.reconnect = false;
300
301 rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL);
302 if (rc)
303 return;
304
Steve Frenchc481e9f2013-10-14 01:21:53 -0500305#ifdef CONFIG_CIFS_STATS2
306 SMB3_request_interfaces(xid, tcon);
307#endif /* STATS2 */
308
Steven Frenchaf6a12e2013-10-09 20:55:53 -0500309 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
310 FS_ATTRIBUTE_INFORMATION);
311 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
312 FS_DEVICE_INFORMATION);
313 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
314 FS_SECTOR_SIZE_INFORMATION); /* SMB3 specific */
315 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
316 return;
317}
318
319static void
Steve French34f62642013-10-09 02:07:00 -0500320smb2_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon)
321{
322 int rc;
323 __le16 srch_path = 0; /* Null - open root of share */
324 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
325 struct cifs_open_parms oparms;
326 struct cifs_fid fid;
327
328 oparms.tcon = tcon;
329 oparms.desired_access = FILE_READ_ATTRIBUTES;
330 oparms.disposition = FILE_OPEN;
331 oparms.create_options = 0;
332 oparms.fid = &fid;
333 oparms.reconnect = false;
334
335 rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL);
336 if (rc)
337 return;
338
Steven French21671142013-10-09 13:36:35 -0500339 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
340 FS_ATTRIBUTE_INFORMATION);
341 SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
342 FS_DEVICE_INFORMATION);
Steve French34f62642013-10-09 02:07:00 -0500343 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
344 return;
345}
346
Pavel Shilovsky2503a0d2011-12-26 22:58:46 +0400347static int
348smb2_is_path_accessible(const unsigned int xid, struct cifs_tcon *tcon,
349 struct cifs_sb_info *cifs_sb, const char *full_path)
350{
351 int rc;
Pavel Shilovsky2503a0d2011-12-26 22:58:46 +0400352 __le16 *utf16_path;
Pavel Shilovsky2e44b282012-09-18 16:20:33 -0700353 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
Pavel Shilovsky064f6042013-07-09 18:20:30 +0400354 struct cifs_open_parms oparms;
355 struct cifs_fid fid;
Pavel Shilovsky2503a0d2011-12-26 22:58:46 +0400356
357 utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb);
358 if (!utf16_path)
359 return -ENOMEM;
360
Pavel Shilovsky064f6042013-07-09 18:20:30 +0400361 oparms.tcon = tcon;
362 oparms.desired_access = FILE_READ_ATTRIBUTES;
363 oparms.disposition = FILE_OPEN;
364 oparms.create_options = 0;
365 oparms.fid = &fid;
Pavel Shilovsky9cbc0b72013-07-09 18:40:58 +0400366 oparms.reconnect = false;
Pavel Shilovsky064f6042013-07-09 18:20:30 +0400367
Pavel Shilovskyb42bf882013-08-14 19:25:21 +0400368 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL);
Pavel Shilovsky2503a0d2011-12-26 22:58:46 +0400369 if (rc) {
370 kfree(utf16_path);
371 return rc;
372 }
373
Pavel Shilovsky064f6042013-07-09 18:20:30 +0400374 rc = SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
Pavel Shilovsky2503a0d2011-12-26 22:58:46 +0400375 kfree(utf16_path);
376 return rc;
377}
378
Pavel Shilovskybe4cb9e2011-12-29 17:06:33 +0400379static int
380smb2_get_srv_inum(const unsigned int xid, struct cifs_tcon *tcon,
381 struct cifs_sb_info *cifs_sb, const char *full_path,
382 u64 *uniqueid, FILE_ALL_INFO *data)
383{
384 *uniqueid = le64_to_cpu(data->IndexNumber);
385 return 0;
386}
387
Pavel Shilovskyb7546bc2012-09-18 16:20:27 -0700388static int
389smb2_query_file_info(const unsigned int xid, struct cifs_tcon *tcon,
390 struct cifs_fid *fid, FILE_ALL_INFO *data)
391{
392 int rc;
393 struct smb2_file_all_info *smb2_data;
394
Pavel Shilovsky1bbe4992014-08-22 13:32:11 +0400395 smb2_data = kzalloc(sizeof(struct smb2_file_all_info) + PATH_MAX * 2,
Pavel Shilovskyb7546bc2012-09-18 16:20:27 -0700396 GFP_KERNEL);
397 if (smb2_data == NULL)
398 return -ENOMEM;
399
400 rc = SMB2_query_info(xid, tcon, fid->persistent_fid, fid->volatile_fid,
401 smb2_data);
402 if (!rc)
403 move_smb2_info_to_cifs(data, smb2_data);
404 kfree(smb2_data);
405 return rc;
406}
407
Pavel Shilovsky9094fad2012-07-12 18:30:44 +0400408static bool
409smb2_can_echo(struct TCP_Server_Info *server)
410{
411 return server->echoes;
412}
413
Pavel Shilovskyd60622e2012-05-28 15:19:39 +0400414static void
415smb2_clear_stats(struct cifs_tcon *tcon)
416{
417#ifdef CONFIG_CIFS_STATS
418 int i;
419 for (i = 0; i < NUMBER_OF_SMB2_COMMANDS; i++) {
420 atomic_set(&tcon->stats.smb2_stats.smb2_com_sent[i], 0);
421 atomic_set(&tcon->stats.smb2_stats.smb2_com_failed[i], 0);
422 }
423#endif
424}
425
426static void
Steve French769ee6a2013-06-19 14:15:30 -0500427smb2_dump_share_caps(struct seq_file *m, struct cifs_tcon *tcon)
428{
429 seq_puts(m, "\n\tShare Capabilities:");
430 if (tcon->capabilities & SMB2_SHARE_CAP_DFS)
431 seq_puts(m, " DFS,");
432 if (tcon->capabilities & SMB2_SHARE_CAP_CONTINUOUS_AVAILABILITY)
433 seq_puts(m, " CONTINUOUS AVAILABILITY,");
434 if (tcon->capabilities & SMB2_SHARE_CAP_SCALEOUT)
435 seq_puts(m, " SCALEOUT,");
436 if (tcon->capabilities & SMB2_SHARE_CAP_CLUSTER)
437 seq_puts(m, " CLUSTER,");
438 if (tcon->capabilities & SMB2_SHARE_CAP_ASYMMETRIC)
439 seq_puts(m, " ASYMMETRIC,");
440 if (tcon->capabilities == 0)
441 seq_puts(m, " None");
Steven Frenchaf6a12e2013-10-09 20:55:53 -0500442 if (tcon->ss_flags & SSINFO_FLAGS_ALIGNED_DEVICE)
443 seq_puts(m, " Aligned,");
444 if (tcon->ss_flags & SSINFO_FLAGS_PARTITION_ALIGNED_ON_DEVICE)
445 seq_puts(m, " Partition Aligned,");
446 if (tcon->ss_flags & SSINFO_FLAGS_NO_SEEK_PENALTY)
447 seq_puts(m, " SSD,");
448 if (tcon->ss_flags & SSINFO_FLAGS_TRIM_ENABLED)
449 seq_puts(m, " TRIM-support,");
450
Steve French769ee6a2013-06-19 14:15:30 -0500451 seq_printf(m, "\tShare Flags: 0x%x", tcon->share_flags);
Steven Frenchaf6a12e2013-10-09 20:55:53 -0500452 if (tcon->perf_sector_size)
453 seq_printf(m, "\tOptimal sector size: 0x%x",
454 tcon->perf_sector_size);
Steve French769ee6a2013-06-19 14:15:30 -0500455}
456
457static void
Pavel Shilovskyd60622e2012-05-28 15:19:39 +0400458smb2_print_stats(struct seq_file *m, struct cifs_tcon *tcon)
459{
460#ifdef CONFIG_CIFS_STATS
461 atomic_t *sent = tcon->stats.smb2_stats.smb2_com_sent;
462 atomic_t *failed = tcon->stats.smb2_stats.smb2_com_failed;
463 seq_printf(m, "\nNegotiates: %d sent %d failed",
464 atomic_read(&sent[SMB2_NEGOTIATE_HE]),
465 atomic_read(&failed[SMB2_NEGOTIATE_HE]));
466 seq_printf(m, "\nSessionSetups: %d sent %d failed",
467 atomic_read(&sent[SMB2_SESSION_SETUP_HE]),
468 atomic_read(&failed[SMB2_SESSION_SETUP_HE]));
Pavel Shilovskyd60622e2012-05-28 15:19:39 +0400469 seq_printf(m, "\nLogoffs: %d sent %d failed",
470 atomic_read(&sent[SMB2_LOGOFF_HE]),
471 atomic_read(&failed[SMB2_LOGOFF_HE]));
472 seq_printf(m, "\nTreeConnects: %d sent %d failed",
473 atomic_read(&sent[SMB2_TREE_CONNECT_HE]),
474 atomic_read(&failed[SMB2_TREE_CONNECT_HE]));
475 seq_printf(m, "\nTreeDisconnects: %d sent %d failed",
476 atomic_read(&sent[SMB2_TREE_DISCONNECT_HE]),
477 atomic_read(&failed[SMB2_TREE_DISCONNECT_HE]));
478 seq_printf(m, "\nCreates: %d sent %d failed",
479 atomic_read(&sent[SMB2_CREATE_HE]),
480 atomic_read(&failed[SMB2_CREATE_HE]));
481 seq_printf(m, "\nCloses: %d sent %d failed",
482 atomic_read(&sent[SMB2_CLOSE_HE]),
483 atomic_read(&failed[SMB2_CLOSE_HE]));
484 seq_printf(m, "\nFlushes: %d sent %d failed",
485 atomic_read(&sent[SMB2_FLUSH_HE]),
486 atomic_read(&failed[SMB2_FLUSH_HE]));
487 seq_printf(m, "\nReads: %d sent %d failed",
488 atomic_read(&sent[SMB2_READ_HE]),
489 atomic_read(&failed[SMB2_READ_HE]));
490 seq_printf(m, "\nWrites: %d sent %d failed",
491 atomic_read(&sent[SMB2_WRITE_HE]),
492 atomic_read(&failed[SMB2_WRITE_HE]));
493 seq_printf(m, "\nLocks: %d sent %d failed",
494 atomic_read(&sent[SMB2_LOCK_HE]),
495 atomic_read(&failed[SMB2_LOCK_HE]));
496 seq_printf(m, "\nIOCTLs: %d sent %d failed",
497 atomic_read(&sent[SMB2_IOCTL_HE]),
498 atomic_read(&failed[SMB2_IOCTL_HE]));
499 seq_printf(m, "\nCancels: %d sent %d failed",
500 atomic_read(&sent[SMB2_CANCEL_HE]),
501 atomic_read(&failed[SMB2_CANCEL_HE]));
502 seq_printf(m, "\nEchos: %d sent %d failed",
503 atomic_read(&sent[SMB2_ECHO_HE]),
504 atomic_read(&failed[SMB2_ECHO_HE]));
505 seq_printf(m, "\nQueryDirectories: %d sent %d failed",
506 atomic_read(&sent[SMB2_QUERY_DIRECTORY_HE]),
507 atomic_read(&failed[SMB2_QUERY_DIRECTORY_HE]));
508 seq_printf(m, "\nChangeNotifies: %d sent %d failed",
509 atomic_read(&sent[SMB2_CHANGE_NOTIFY_HE]),
510 atomic_read(&failed[SMB2_CHANGE_NOTIFY_HE]));
511 seq_printf(m, "\nQueryInfos: %d sent %d failed",
512 atomic_read(&sent[SMB2_QUERY_INFO_HE]),
513 atomic_read(&failed[SMB2_QUERY_INFO_HE]));
514 seq_printf(m, "\nSetInfos: %d sent %d failed",
515 atomic_read(&sent[SMB2_SET_INFO_HE]),
516 atomic_read(&failed[SMB2_SET_INFO_HE]));
517 seq_printf(m, "\nOplockBreaks: %d sent %d failed",
518 atomic_read(&sent[SMB2_OPLOCK_BREAK_HE]),
519 atomic_read(&failed[SMB2_OPLOCK_BREAK_HE]));
520#endif
521}
522
Pavel Shilovskyf0df7372012-09-18 16:20:26 -0700523static void
524smb2_set_fid(struct cifsFileInfo *cfile, struct cifs_fid *fid, __u32 oplock)
525{
Pavel Shilovsky2e44b282012-09-18 16:20:33 -0700526 struct cifsInodeInfo *cinode = CIFS_I(cfile->dentry->d_inode);
Pavel Shilovsky53ef1012013-09-05 16:11:28 +0400527 struct TCP_Server_Info *server = tlink_tcon(cfile->tlink)->ses->server;
528
Pavel Shilovskyf0df7372012-09-18 16:20:26 -0700529 cfile->fid.persistent_fid = fid->persistent_fid;
530 cfile->fid.volatile_fid = fid->volatile_fid;
Pavel Shilovsky42873b02013-09-05 21:30:16 +0400531 server->ops->set_oplock_level(cinode, oplock, fid->epoch,
532 &fid->purge_cache);
Pavel Shilovsky18cceb62013-09-05 13:01:06 +0400533 cinode->can_cache_brlcks = CIFS_CACHE_WRITE(cinode);
Pavel Shilovskyf0df7372012-09-18 16:20:26 -0700534}
535
Pavel Shilovsky760ad0c2012-09-25 11:00:07 +0400536static void
Pavel Shilovskyf0df7372012-09-18 16:20:26 -0700537smb2_close_file(const unsigned int xid, struct cifs_tcon *tcon,
538 struct cifs_fid *fid)
539{
Pavel Shilovsky760ad0c2012-09-25 11:00:07 +0400540 SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
Pavel Shilovskyf0df7372012-09-18 16:20:26 -0700541}
542
Pavel Shilovsky7a5cfb12012-09-18 16:20:28 -0700543static int
Steve French41c13582013-11-14 00:05:36 -0600544SMB2_request_res_key(const unsigned int xid, struct cifs_tcon *tcon,
545 u64 persistent_fid, u64 volatile_fid,
546 struct copychunk_ioctl *pcchunk)
547{
548 int rc;
549 unsigned int ret_data_len;
550 struct resume_key_req *res_key;
551
552 rc = SMB2_ioctl(xid, tcon, persistent_fid, volatile_fid,
553 FSCTL_SRV_REQUEST_RESUME_KEY, true /* is_fsctl */,
554 NULL, 0 /* no input */,
555 (char **)&res_key, &ret_data_len);
556
557 if (rc) {
558 cifs_dbg(VFS, "refcpy ioctl error %d getting resume key\n", rc);
559 goto req_res_key_exit;
560 }
561 if (ret_data_len < sizeof(struct resume_key_req)) {
562 cifs_dbg(VFS, "Invalid refcopy resume key length\n");
563 rc = -EINVAL;
564 goto req_res_key_exit;
565 }
566 memcpy(pcchunk->SourceKey, res_key->ResumeKey, COPY_CHUNK_RES_KEY_SIZE);
567
568req_res_key_exit:
569 kfree(res_key);
570 return rc;
571}
572
573static int
574smb2_clone_range(const unsigned int xid,
575 struct cifsFileInfo *srcfile,
576 struct cifsFileInfo *trgtfile, u64 src_off,
577 u64 len, u64 dest_off)
578{
579 int rc;
580 unsigned int ret_data_len;
581 struct copychunk_ioctl *pcchunk;
Steve French9bf0c9c2013-11-16 18:05:28 -0600582 struct copychunk_ioctl_rsp *retbuf = NULL;
583 struct cifs_tcon *tcon;
584 int chunks_copied = 0;
585 bool chunk_sizes_updated = false;
Steve French41c13582013-11-14 00:05:36 -0600586
587 pcchunk = kmalloc(sizeof(struct copychunk_ioctl), GFP_KERNEL);
588
589 if (pcchunk == NULL)
590 return -ENOMEM;
591
592 cifs_dbg(FYI, "in smb2_clone_range - about to call request res key\n");
593 /* Request a key from the server to identify the source of the copy */
594 rc = SMB2_request_res_key(xid, tlink_tcon(srcfile->tlink),
595 srcfile->fid.persistent_fid,
596 srcfile->fid.volatile_fid, pcchunk);
597
598 /* Note: request_res_key sets res_key null only if rc !=0 */
599 if (rc)
Steve French9bf0c9c2013-11-16 18:05:28 -0600600 goto cchunk_out;
Steve French41c13582013-11-14 00:05:36 -0600601
602 /* For now array only one chunk long, will make more flexible later */
Fabian Frederickbc09d142014-12-10 15:41:15 -0800603 pcchunk->ChunkCount = cpu_to_le32(1);
Steve French41c13582013-11-14 00:05:36 -0600604 pcchunk->Reserved = 0;
Steve French41c13582013-11-14 00:05:36 -0600605 pcchunk->Reserved2 = 0;
606
Steve French9bf0c9c2013-11-16 18:05:28 -0600607 tcon = tlink_tcon(trgtfile->tlink);
608
609 while (len > 0) {
610 pcchunk->SourceOffset = cpu_to_le64(src_off);
611 pcchunk->TargetOffset = cpu_to_le64(dest_off);
612 pcchunk->Length =
613 cpu_to_le32(min_t(u32, len, tcon->max_bytes_chunk));
614
615 /* Request server copy to target from src identified by key */
616 rc = SMB2_ioctl(xid, tcon, trgtfile->fid.persistent_fid,
Steve French41c13582013-11-14 00:05:36 -0600617 trgtfile->fid.volatile_fid, FSCTL_SRV_COPYCHUNK_WRITE,
618 true /* is_fsctl */, (char *)pcchunk,
Steve French9bf0c9c2013-11-16 18:05:28 -0600619 sizeof(struct copychunk_ioctl), (char **)&retbuf,
620 &ret_data_len);
621 if (rc == 0) {
622 if (ret_data_len !=
623 sizeof(struct copychunk_ioctl_rsp)) {
624 cifs_dbg(VFS, "invalid cchunk response size\n");
625 rc = -EIO;
626 goto cchunk_out;
627 }
628 if (retbuf->TotalBytesWritten == 0) {
629 cifs_dbg(FYI, "no bytes copied\n");
630 rc = -EIO;
631 goto cchunk_out;
632 }
633 /*
634 * Check if server claimed to write more than we asked
635 */
636 if (le32_to_cpu(retbuf->TotalBytesWritten) >
637 le32_to_cpu(pcchunk->Length)) {
638 cifs_dbg(VFS, "invalid copy chunk response\n");
639 rc = -EIO;
640 goto cchunk_out;
641 }
642 if (le32_to_cpu(retbuf->ChunksWritten) != 1) {
643 cifs_dbg(VFS, "invalid num chunks written\n");
644 rc = -EIO;
645 goto cchunk_out;
646 }
647 chunks_copied++;
Steve French41c13582013-11-14 00:05:36 -0600648
Steve French9bf0c9c2013-11-16 18:05:28 -0600649 src_off += le32_to_cpu(retbuf->TotalBytesWritten);
650 dest_off += le32_to_cpu(retbuf->TotalBytesWritten);
651 len -= le32_to_cpu(retbuf->TotalBytesWritten);
Steve French41c13582013-11-14 00:05:36 -0600652
Steve French9bf0c9c2013-11-16 18:05:28 -0600653 cifs_dbg(FYI, "Chunks %d PartialChunk %d Total %d\n",
654 le32_to_cpu(retbuf->ChunksWritten),
655 le32_to_cpu(retbuf->ChunkBytesWritten),
656 le32_to_cpu(retbuf->TotalBytesWritten));
657 } else if (rc == -EINVAL) {
658 if (ret_data_len != sizeof(struct copychunk_ioctl_rsp))
659 goto cchunk_out;
Steve French41c13582013-11-14 00:05:36 -0600660
Steve French9bf0c9c2013-11-16 18:05:28 -0600661 cifs_dbg(FYI, "MaxChunks %d BytesChunk %d MaxCopy %d\n",
662 le32_to_cpu(retbuf->ChunksWritten),
663 le32_to_cpu(retbuf->ChunkBytesWritten),
664 le32_to_cpu(retbuf->TotalBytesWritten));
665
666 /*
667 * Check if this is the first request using these sizes,
668 * (ie check if copy succeed once with original sizes
669 * and check if the server gave us different sizes after
670 * we already updated max sizes on previous request).
671 * if not then why is the server returning an error now
672 */
673 if ((chunks_copied != 0) || chunk_sizes_updated)
674 goto cchunk_out;
675
676 /* Check that server is not asking us to grow size */
677 if (le32_to_cpu(retbuf->ChunkBytesWritten) <
678 tcon->max_bytes_chunk)
679 tcon->max_bytes_chunk =
680 le32_to_cpu(retbuf->ChunkBytesWritten);
681 else
682 goto cchunk_out; /* server gave us bogus size */
683
684 /* No need to change MaxChunks since already set to 1 */
685 chunk_sizes_updated = true;
686 }
687 }
688
689cchunk_out:
Steve French41c13582013-11-14 00:05:36 -0600690 kfree(pcchunk);
691 return rc;
692}
693
694static int
Pavel Shilovsky7a5cfb12012-09-18 16:20:28 -0700695smb2_flush_file(const unsigned int xid, struct cifs_tcon *tcon,
696 struct cifs_fid *fid)
697{
698 return SMB2_flush(xid, tcon, fid->persistent_fid, fid->volatile_fid);
699}
700
Pavel Shilovsky09a47072012-09-18 16:20:29 -0700701static unsigned int
702smb2_read_data_offset(char *buf)
703{
704 struct smb2_read_rsp *rsp = (struct smb2_read_rsp *)buf;
705 return rsp->DataOffset;
706}
707
708static unsigned int
709smb2_read_data_length(char *buf)
710{
711 struct smb2_read_rsp *rsp = (struct smb2_read_rsp *)buf;
712 return le32_to_cpu(rsp->DataLength);
713}
714
Pavel Shilovskyd8e05032012-09-18 16:20:30 -0700715
716static int
Steve Frenchdb8b6312014-09-22 05:13:55 -0500717smb2_sync_read(const unsigned int xid, struct cifs_fid *pfid,
Pavel Shilovskyd8e05032012-09-18 16:20:30 -0700718 struct cifs_io_parms *parms, unsigned int *bytes_read,
719 char **buf, int *buf_type)
720{
Steve Frenchdb8b6312014-09-22 05:13:55 -0500721 parms->persistent_fid = pfid->persistent_fid;
722 parms->volatile_fid = pfid->volatile_fid;
Pavel Shilovskyd8e05032012-09-18 16:20:30 -0700723 return SMB2_read(xid, parms, bytes_read, buf, buf_type);
724}
725
Pavel Shilovsky009d3442012-09-18 16:20:30 -0700726static int
Steve Frenchdb8b6312014-09-22 05:13:55 -0500727smb2_sync_write(const unsigned int xid, struct cifs_fid *pfid,
Pavel Shilovsky009d3442012-09-18 16:20:30 -0700728 struct cifs_io_parms *parms, unsigned int *written,
729 struct kvec *iov, unsigned long nr_segs)
730{
731
Steve Frenchdb8b6312014-09-22 05:13:55 -0500732 parms->persistent_fid = pfid->persistent_fid;
733 parms->volatile_fid = pfid->volatile_fid;
Pavel Shilovsky009d3442012-09-18 16:20:30 -0700734 return SMB2_write(xid, parms, written, iov, nr_segs);
735}
736
Steve Frenchd43cc792014-08-13 17:16:29 -0500737/* Set or clear the SPARSE_FILE attribute based on value passed in setsparse */
738static bool smb2_set_sparse(const unsigned int xid, struct cifs_tcon *tcon,
739 struct cifsFileInfo *cfile, struct inode *inode, __u8 setsparse)
740{
741 struct cifsInodeInfo *cifsi;
742 int rc;
743
744 cifsi = CIFS_I(inode);
745
746 /* if file already sparse don't bother setting sparse again */
747 if ((cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) && setsparse)
748 return true; /* already sparse */
749
750 if (!(cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) && !setsparse)
751 return true; /* already not sparse */
752
753 /*
754 * Can't check for sparse support on share the usual way via the
755 * FS attribute info (FILE_SUPPORTS_SPARSE_FILES) on the share
756 * since Samba server doesn't set the flag on the share, yet
757 * supports the set sparse FSCTL and returns sparse correctly
758 * in the file attributes. If we fail setting sparse though we
759 * mark that server does not support sparse files for this share
760 * to avoid repeatedly sending the unsupported fsctl to server
761 * if the file is repeatedly extended.
762 */
763 if (tcon->broken_sparse_sup)
764 return false;
765
766 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
767 cfile->fid.volatile_fid, FSCTL_SET_SPARSE,
768 true /* is_fctl */, &setsparse, 1, NULL, NULL);
769 if (rc) {
770 tcon->broken_sparse_sup = true;
771 cifs_dbg(FYI, "set sparse rc = %d\n", rc);
772 return false;
773 }
774
775 if (setsparse)
776 cifsi->cifsAttrs |= FILE_ATTRIBUTE_SPARSE_FILE;
777 else
778 cifsi->cifsAttrs &= (~FILE_ATTRIBUTE_SPARSE_FILE);
779
780 return true;
781}
782
Pavel Shilovskyc839ff22012-09-18 16:20:32 -0700783static int
784smb2_set_file_size(const unsigned int xid, struct cifs_tcon *tcon,
785 struct cifsFileInfo *cfile, __u64 size, bool set_alloc)
786{
787 __le64 eof = cpu_to_le64(size);
Steve French3d1a3742014-08-11 21:05:25 -0500788 struct inode *inode;
789
790 /*
791 * If extending file more than one page make sparse. Many Linux fs
792 * make files sparse by default when extending via ftruncate
793 */
794 inode = cfile->dentry->d_inode;
795
796 if (!set_alloc && (size > inode->i_size + 8192)) {
Steve French3d1a3742014-08-11 21:05:25 -0500797 __u8 set_sparse = 1;
Steve French3d1a3742014-08-11 21:05:25 -0500798
Steve Frenchd43cc792014-08-13 17:16:29 -0500799 /* whether set sparse succeeds or not, extend the file */
800 smb2_set_sparse(xid, tcon, cfile, inode, set_sparse);
Steve French3d1a3742014-08-11 21:05:25 -0500801 }
802
Pavel Shilovskyc839ff22012-09-18 16:20:32 -0700803 return SMB2_set_eof(xid, tcon, cfile->fid.persistent_fid,
Steve Frenchf29ebb42014-07-19 21:44:58 -0500804 cfile->fid.volatile_fid, cfile->pid, &eof, false);
Pavel Shilovskyc839ff22012-09-18 16:20:32 -0700805}
806
Pavel Shilovskyd324f08d2012-09-18 16:20:33 -0700807static int
Steve French64a5cfa2013-10-14 15:31:32 -0500808smb2_set_compression(const unsigned int xid, struct cifs_tcon *tcon,
809 struct cifsFileInfo *cfile)
810{
811 return SMB2_set_compression(xid, tcon, cfile->fid.persistent_fid,
812 cfile->fid.volatile_fid);
813}
814
815static int
Pavel Shilovskyd324f08d2012-09-18 16:20:33 -0700816smb2_query_dir_first(const unsigned int xid, struct cifs_tcon *tcon,
817 const char *path, struct cifs_sb_info *cifs_sb,
818 struct cifs_fid *fid, __u16 search_flags,
819 struct cifs_search_info *srch_inf)
820{
821 __le16 *utf16_path;
822 int rc;
Pavel Shilovsky2e44b282012-09-18 16:20:33 -0700823 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
Pavel Shilovsky064f6042013-07-09 18:20:30 +0400824 struct cifs_open_parms oparms;
Pavel Shilovskyd324f08d2012-09-18 16:20:33 -0700825
826 utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
827 if (!utf16_path)
828 return -ENOMEM;
829
Pavel Shilovsky064f6042013-07-09 18:20:30 +0400830 oparms.tcon = tcon;
831 oparms.desired_access = FILE_READ_ATTRIBUTES | FILE_READ_DATA;
832 oparms.disposition = FILE_OPEN;
833 oparms.create_options = 0;
834 oparms.fid = fid;
Pavel Shilovsky9cbc0b72013-07-09 18:40:58 +0400835 oparms.reconnect = false;
Pavel Shilovsky064f6042013-07-09 18:20:30 +0400836
Pavel Shilovskyb42bf882013-08-14 19:25:21 +0400837 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL);
Pavel Shilovskyd324f08d2012-09-18 16:20:33 -0700838 kfree(utf16_path);
839 if (rc) {
Joe Perchesf96637b2013-05-04 22:12:25 -0500840 cifs_dbg(VFS, "open dir failed\n");
Pavel Shilovskyd324f08d2012-09-18 16:20:33 -0700841 return rc;
842 }
843
844 srch_inf->entries_in_buffer = 0;
845 srch_inf->index_of_last_entry = 0;
Pavel Shilovskyd324f08d2012-09-18 16:20:33 -0700846
Pavel Shilovsky064f6042013-07-09 18:20:30 +0400847 rc = SMB2_query_directory(xid, tcon, fid->persistent_fid,
848 fid->volatile_fid, 0, srch_inf);
Pavel Shilovskyd324f08d2012-09-18 16:20:33 -0700849 if (rc) {
Joe Perchesf96637b2013-05-04 22:12:25 -0500850 cifs_dbg(VFS, "query directory failed\n");
Pavel Shilovsky064f6042013-07-09 18:20:30 +0400851 SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
Pavel Shilovskyd324f08d2012-09-18 16:20:33 -0700852 }
853 return rc;
854}
855
856static int
857smb2_query_dir_next(const unsigned int xid, struct cifs_tcon *tcon,
858 struct cifs_fid *fid, __u16 search_flags,
859 struct cifs_search_info *srch_inf)
860{
861 return SMB2_query_directory(xid, tcon, fid->persistent_fid,
862 fid->volatile_fid, 0, srch_inf);
863}
864
865static int
866smb2_close_dir(const unsigned int xid, struct cifs_tcon *tcon,
867 struct cifs_fid *fid)
868{
869 return SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
870}
871
Pavel Shilovsky2e44b282012-09-18 16:20:33 -0700872/*
873* If we negotiate SMB2 protocol and get STATUS_PENDING - update
874* the number of credits and return true. Otherwise - return false.
875*/
876static bool
877smb2_is_status_pending(char *buf, struct TCP_Server_Info *server, int length)
878{
879 struct smb2_hdr *hdr = (struct smb2_hdr *)buf;
880
Steve French12e8a202012-09-19 09:19:39 -0700881 if (hdr->Status != STATUS_PENDING)
Pavel Shilovsky2e44b282012-09-18 16:20:33 -0700882 return false;
883
884 if (!length) {
885 spin_lock(&server->req_lock);
886 server->credits += le16_to_cpu(hdr->CreditRequest);
887 spin_unlock(&server->req_lock);
888 wake_up(&server->request_q);
889 }
890
891 return true;
892}
893
Pavel Shilovsky983c88a2012-09-18 16:20:33 -0700894static int
895smb2_oplock_response(struct cifs_tcon *tcon, struct cifs_fid *fid,
896 struct cifsInodeInfo *cinode)
897{
Pavel Shilovsky0822f512012-09-19 06:22:45 -0700898 if (tcon->ses->server->capabilities & SMB2_GLOBAL_CAP_LEASING)
899 return SMB2_lease_break(0, tcon, cinode->lease_key,
900 smb2_get_lease_state(cinode));
901
Pavel Shilovsky983c88a2012-09-18 16:20:33 -0700902 return SMB2_oplock_break(0, tcon, fid->persistent_fid,
903 fid->volatile_fid,
Pavel Shilovsky18cceb62013-09-05 13:01:06 +0400904 CIFS_CACHE_READ(cinode) ? 1 : 0);
Pavel Shilovsky983c88a2012-09-18 16:20:33 -0700905}
906
Pavel Shilovsky6fc05c22012-09-18 16:20:34 -0700907static int
908smb2_queryfs(const unsigned int xid, struct cifs_tcon *tcon,
909 struct kstatfs *buf)
910{
911 int rc;
Pavel Shilovsky6fc05c22012-09-18 16:20:34 -0700912 __le16 srch_path = 0; /* Null - open root of share */
913 u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
Pavel Shilovsky064f6042013-07-09 18:20:30 +0400914 struct cifs_open_parms oparms;
915 struct cifs_fid fid;
Pavel Shilovsky6fc05c22012-09-18 16:20:34 -0700916
Pavel Shilovsky064f6042013-07-09 18:20:30 +0400917 oparms.tcon = tcon;
918 oparms.desired_access = FILE_READ_ATTRIBUTES;
919 oparms.disposition = FILE_OPEN;
920 oparms.create_options = 0;
921 oparms.fid = &fid;
Pavel Shilovsky9cbc0b72013-07-09 18:40:58 +0400922 oparms.reconnect = false;
Pavel Shilovsky064f6042013-07-09 18:20:30 +0400923
Pavel Shilovskyb42bf882013-08-14 19:25:21 +0400924 rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL);
Pavel Shilovsky6fc05c22012-09-18 16:20:34 -0700925 if (rc)
926 return rc;
927 buf->f_type = SMB2_MAGIC_NUMBER;
Pavel Shilovsky064f6042013-07-09 18:20:30 +0400928 rc = SMB2_QFS_info(xid, tcon, fid.persistent_fid, fid.volatile_fid,
929 buf);
930 SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
Pavel Shilovsky6fc05c22012-09-18 16:20:34 -0700931 return rc;
932}
933
Pavel Shilovsky027e8ee2012-09-19 06:22:43 -0700934static bool
935smb2_compare_fids(struct cifsFileInfo *ob1, struct cifsFileInfo *ob2)
936{
937 return ob1->fid.persistent_fid == ob2->fid.persistent_fid &&
938 ob1->fid.volatile_fid == ob2->fid.volatile_fid;
939}
940
Pavel Shilovskyf7ba7fe2012-09-19 06:22:43 -0700941static int
942smb2_mand_lock(const unsigned int xid, struct cifsFileInfo *cfile, __u64 offset,
943 __u64 length, __u32 type, int lock, int unlock, bool wait)
944{
945 if (unlock && !lock)
946 type = SMB2_LOCKFLAG_UNLOCK;
947 return SMB2_lock(xid, tlink_tcon(cfile->tlink),
948 cfile->fid.persistent_fid, cfile->fid.volatile_fid,
949 current->tgid, length, offset, type, wait);
950}
951
Pavel Shilovskyb8c32db2012-09-19 06:22:44 -0700952static void
953smb2_get_lease_key(struct inode *inode, struct cifs_fid *fid)
954{
955 memcpy(fid->lease_key, CIFS_I(inode)->lease_key, SMB2_LEASE_KEY_SIZE);
956}
957
958static void
959smb2_set_lease_key(struct inode *inode, struct cifs_fid *fid)
960{
961 memcpy(CIFS_I(inode)->lease_key, fid->lease_key, SMB2_LEASE_KEY_SIZE);
962}
963
964static void
965smb2_new_lease_key(struct cifs_fid *fid)
966{
967 get_random_bytes(fid->lease_key, SMB2_LEASE_KEY_SIZE);
968}
969
Pavel Shilovskyb42bf882013-08-14 19:25:21 +0400970static int
971smb2_query_symlink(const unsigned int xid, struct cifs_tcon *tcon,
972 const char *full_path, char **target_path,
973 struct cifs_sb_info *cifs_sb)
974{
975 int rc;
976 __le16 *utf16_path;
977 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
978 struct cifs_open_parms oparms;
979 struct cifs_fid fid;
980 struct smb2_err_rsp *err_buf = NULL;
981 struct smb2_symlink_err_rsp *symlink;
982 unsigned int sub_len, sub_offset;
983
984 cifs_dbg(FYI, "%s: path: %s\n", __func__, full_path);
985
986 utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb);
987 if (!utf16_path)
988 return -ENOMEM;
989
990 oparms.tcon = tcon;
991 oparms.desired_access = FILE_READ_ATTRIBUTES;
992 oparms.disposition = FILE_OPEN;
993 oparms.create_options = 0;
994 oparms.fid = &fid;
995 oparms.reconnect = false;
996
997 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, &err_buf);
998
999 if (!rc || !err_buf) {
1000 kfree(utf16_path);
1001 return -ENOENT;
1002 }
1003 /* open must fail on symlink - reset rc */
1004 rc = 0;
1005 symlink = (struct smb2_symlink_err_rsp *)err_buf->ErrorData;
1006 sub_len = le16_to_cpu(symlink->SubstituteNameLength);
1007 sub_offset = le16_to_cpu(symlink->SubstituteNameOffset);
1008 *target_path = cifs_strndup_from_utf16(
1009 (char *)symlink->PathBuffer + sub_offset,
1010 sub_len, true, cifs_sb->local_nls);
1011 if (!(*target_path)) {
1012 kfree(utf16_path);
1013 return -ENOMEM;
1014 }
1015 convert_delimiter(*target_path, '/');
1016 cifs_dbg(FYI, "%s: target path: %s\n", __func__, *target_path);
1017 kfree(utf16_path);
1018 return rc;
1019}
1020
Steve French30175622014-08-17 18:16:40 -05001021static long smb3_zero_range(struct file *file, struct cifs_tcon *tcon,
1022 loff_t offset, loff_t len, bool keep_size)
1023{
1024 struct inode *inode;
1025 struct cifsInodeInfo *cifsi;
1026 struct cifsFileInfo *cfile = file->private_data;
1027 struct file_zero_data_information fsctl_buf;
1028 long rc;
1029 unsigned int xid;
1030
1031 xid = get_xid();
1032
1033 inode = cfile->dentry->d_inode;
1034 cifsi = CIFS_I(inode);
1035
1036 /* if file not oplocked can't be sure whether asking to extend size */
1037 if (!CIFS_CACHE_READ(cifsi))
1038 if (keep_size == false)
1039 return -EOPNOTSUPP;
1040
Steve French2bb93d22014-08-20 18:56:29 -05001041 /*
Steve French30175622014-08-17 18:16:40 -05001042 * Must check if file sparse since fallocate -z (zero range) assumes
1043 * non-sparse allocation
1044 */
1045 if (!(cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE))
1046 return -EOPNOTSUPP;
1047
1048 /*
1049 * need to make sure we are not asked to extend the file since the SMB3
1050 * fsctl does not change the file size. In the future we could change
1051 * this to zero the first part of the range then set the file size
1052 * which for a non sparse file would zero the newly extended range
1053 */
1054 if (keep_size == false)
1055 if (i_size_read(inode) < offset + len)
1056 return -EOPNOTSUPP;
1057
1058 cifs_dbg(FYI, "offset %lld len %lld", offset, len);
1059
1060 fsctl_buf.FileOffset = cpu_to_le64(offset);
1061 fsctl_buf.BeyondFinalZero = cpu_to_le64(offset + len);
1062
1063 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
1064 cfile->fid.volatile_fid, FSCTL_SET_ZERO_DATA,
1065 true /* is_fctl */, (char *)&fsctl_buf,
1066 sizeof(struct file_zero_data_information), NULL, NULL);
1067 free_xid(xid);
1068 return rc;
1069}
1070
Steve French31742c52014-08-17 08:38:47 -05001071static long smb3_punch_hole(struct file *file, struct cifs_tcon *tcon,
1072 loff_t offset, loff_t len)
1073{
1074 struct inode *inode;
1075 struct cifsInodeInfo *cifsi;
1076 struct cifsFileInfo *cfile = file->private_data;
1077 struct file_zero_data_information fsctl_buf;
1078 long rc;
1079 unsigned int xid;
1080 __u8 set_sparse = 1;
1081
1082 xid = get_xid();
1083
1084 inode = cfile->dentry->d_inode;
1085 cifsi = CIFS_I(inode);
1086
1087 /* Need to make file sparse, if not already, before freeing range. */
1088 /* Consider adding equivalent for compressed since it could also work */
1089 if (!smb2_set_sparse(xid, tcon, cfile, inode, set_sparse))
1090 return -EOPNOTSUPP;
1091
1092 cifs_dbg(FYI, "offset %lld len %lld", offset, len);
1093
1094 fsctl_buf.FileOffset = cpu_to_le64(offset);
1095 fsctl_buf.BeyondFinalZero = cpu_to_le64(offset + len);
1096
1097 rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
1098 cfile->fid.volatile_fid, FSCTL_SET_ZERO_DATA,
1099 true /* is_fctl */, (char *)&fsctl_buf,
1100 sizeof(struct file_zero_data_information), NULL, NULL);
1101 free_xid(xid);
1102 return rc;
1103}
1104
Steve French9ccf3212014-10-18 17:01:15 -05001105static long smb3_simple_falloc(struct file *file, struct cifs_tcon *tcon,
1106 loff_t off, loff_t len, bool keep_size)
1107{
1108 struct inode *inode;
1109 struct cifsInodeInfo *cifsi;
1110 struct cifsFileInfo *cfile = file->private_data;
1111 long rc = -EOPNOTSUPP;
1112 unsigned int xid;
1113
1114 xid = get_xid();
1115
1116 inode = cfile->dentry->d_inode;
1117 cifsi = CIFS_I(inode);
1118
1119 /* if file not oplocked can't be sure whether asking to extend size */
1120 if (!CIFS_CACHE_READ(cifsi))
1121 if (keep_size == false)
1122 return -EOPNOTSUPP;
1123
1124 /*
1125 * Files are non-sparse by default so falloc may be a no-op
1126 * Must check if file sparse. If not sparse, and not extending
1127 * then no need to do anything since file already allocated
1128 */
1129 if ((cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) == 0) {
1130 if (keep_size == true)
1131 return 0;
1132 /* check if extending file */
1133 else if (i_size_read(inode) >= off + len)
1134 /* not extending file and already not sparse */
1135 return 0;
1136 /* BB: in future add else clause to extend file */
1137 else
1138 return -EOPNOTSUPP;
1139 }
1140
1141 if ((keep_size == true) || (i_size_read(inode) >= off + len)) {
1142 /*
1143 * Check if falloc starts within first few pages of file
1144 * and ends within a few pages of the end of file to
1145 * ensure that most of file is being forced to be
1146 * fallocated now. If so then setting whole file sparse
1147 * ie potentially making a few extra pages at the beginning
1148 * or end of the file non-sparse via set_sparse is harmless.
1149 */
1150 if ((off > 8192) || (off + len + 8192 < i_size_read(inode)))
1151 return -EOPNOTSUPP;
1152
1153 rc = smb2_set_sparse(xid, tcon, cfile, inode, false);
1154 }
1155 /* BB: else ... in future add code to extend file and set sparse */
1156
1157
1158 free_xid(xid);
1159 return rc;
1160}
1161
1162
Steve French31742c52014-08-17 08:38:47 -05001163static long smb3_fallocate(struct file *file, struct cifs_tcon *tcon, int mode,
1164 loff_t off, loff_t len)
1165{
1166 /* KEEP_SIZE already checked for by do_fallocate */
1167 if (mode & FALLOC_FL_PUNCH_HOLE)
1168 return smb3_punch_hole(file, tcon, off, len);
Steve French30175622014-08-17 18:16:40 -05001169 else if (mode & FALLOC_FL_ZERO_RANGE) {
1170 if (mode & FALLOC_FL_KEEP_SIZE)
1171 return smb3_zero_range(file, tcon, off, len, true);
1172 return smb3_zero_range(file, tcon, off, len, false);
Steve French9ccf3212014-10-18 17:01:15 -05001173 } else if (mode == FALLOC_FL_KEEP_SIZE)
1174 return smb3_simple_falloc(file, tcon, off, len, true);
1175 else if (mode == 0)
1176 return smb3_simple_falloc(file, tcon, off, len, false);
Steve French31742c52014-08-17 08:38:47 -05001177
1178 return -EOPNOTSUPP;
1179}
1180
Pavel Shilovsky53ef1012013-09-05 16:11:28 +04001181static void
Sachin Prabhuc11f1df2014-03-11 16:11:47 +00001182smb2_downgrade_oplock(struct TCP_Server_Info *server,
1183 struct cifsInodeInfo *cinode, bool set_level2)
1184{
1185 if (set_level2)
1186 server->ops->set_oplock_level(cinode, SMB2_OPLOCK_LEVEL_II,
1187 0, NULL);
1188 else
1189 server->ops->set_oplock_level(cinode, 0, 0, NULL);
1190}
1191
1192static void
Pavel Shilovsky42873b02013-09-05 21:30:16 +04001193smb2_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
1194 unsigned int epoch, bool *purge_cache)
Pavel Shilovsky53ef1012013-09-05 16:11:28 +04001195{
1196 oplock &= 0xFF;
1197 if (oplock == SMB2_OPLOCK_LEVEL_NOCHANGE)
1198 return;
1199 if (oplock == SMB2_OPLOCK_LEVEL_BATCH) {
Pavel Shilovsky42873b02013-09-05 21:30:16 +04001200 cinode->oplock = CIFS_CACHE_RHW_FLG;
Pavel Shilovsky53ef1012013-09-05 16:11:28 +04001201 cifs_dbg(FYI, "Batch Oplock granted on inode %p\n",
1202 &cinode->vfs_inode);
1203 } else if (oplock == SMB2_OPLOCK_LEVEL_EXCLUSIVE) {
Pavel Shilovsky42873b02013-09-05 21:30:16 +04001204 cinode->oplock = CIFS_CACHE_RW_FLG;
Pavel Shilovsky53ef1012013-09-05 16:11:28 +04001205 cifs_dbg(FYI, "Exclusive Oplock granted on inode %p\n",
1206 &cinode->vfs_inode);
1207 } else if (oplock == SMB2_OPLOCK_LEVEL_II) {
1208 cinode->oplock = CIFS_CACHE_READ_FLG;
1209 cifs_dbg(FYI, "Level II Oplock granted on inode %p\n",
1210 &cinode->vfs_inode);
1211 } else
1212 cinode->oplock = 0;
1213}
1214
1215static void
Pavel Shilovsky42873b02013-09-05 21:30:16 +04001216smb21_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
1217 unsigned int epoch, bool *purge_cache)
Pavel Shilovsky53ef1012013-09-05 16:11:28 +04001218{
1219 char message[5] = {0};
1220
1221 oplock &= 0xFF;
1222 if (oplock == SMB2_OPLOCK_LEVEL_NOCHANGE)
1223 return;
1224
1225 cinode->oplock = 0;
1226 if (oplock & SMB2_LEASE_READ_CACHING_HE) {
1227 cinode->oplock |= CIFS_CACHE_READ_FLG;
1228 strcat(message, "R");
1229 }
1230 if (oplock & SMB2_LEASE_HANDLE_CACHING_HE) {
1231 cinode->oplock |= CIFS_CACHE_HANDLE_FLG;
1232 strcat(message, "H");
1233 }
1234 if (oplock & SMB2_LEASE_WRITE_CACHING_HE) {
1235 cinode->oplock |= CIFS_CACHE_WRITE_FLG;
1236 strcat(message, "W");
1237 }
1238 if (!cinode->oplock)
1239 strcat(message, "None");
1240 cifs_dbg(FYI, "%s Lease granted on inode %p\n", message,
1241 &cinode->vfs_inode);
1242}
1243
Pavel Shilovsky42873b02013-09-05 21:30:16 +04001244static void
1245smb3_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
1246 unsigned int epoch, bool *purge_cache)
1247{
1248 unsigned int old_oplock = cinode->oplock;
1249
1250 smb21_set_oplock_level(cinode, oplock, epoch, purge_cache);
1251
1252 if (purge_cache) {
1253 *purge_cache = false;
1254 if (old_oplock == CIFS_CACHE_READ_FLG) {
1255 if (cinode->oplock == CIFS_CACHE_READ_FLG &&
1256 (epoch - cinode->epoch > 0))
1257 *purge_cache = true;
1258 else if (cinode->oplock == CIFS_CACHE_RH_FLG &&
1259 (epoch - cinode->epoch > 1))
1260 *purge_cache = true;
1261 else if (cinode->oplock == CIFS_CACHE_RHW_FLG &&
1262 (epoch - cinode->epoch > 1))
1263 *purge_cache = true;
1264 else if (cinode->oplock == 0 &&
1265 (epoch - cinode->epoch > 0))
1266 *purge_cache = true;
1267 } else if (old_oplock == CIFS_CACHE_RH_FLG) {
1268 if (cinode->oplock == CIFS_CACHE_RH_FLG &&
1269 (epoch - cinode->epoch > 0))
1270 *purge_cache = true;
1271 else if (cinode->oplock == CIFS_CACHE_RHW_FLG &&
1272 (epoch - cinode->epoch > 1))
1273 *purge_cache = true;
1274 }
1275 cinode->epoch = epoch;
1276 }
1277}
1278
Pavel Shilovsky53ef1012013-09-05 16:11:28 +04001279static bool
1280smb2_is_read_op(__u32 oplock)
1281{
1282 return oplock == SMB2_OPLOCK_LEVEL_II;
1283}
1284
1285static bool
1286smb21_is_read_op(__u32 oplock)
1287{
1288 return (oplock & SMB2_LEASE_READ_CACHING_HE) &&
1289 !(oplock & SMB2_LEASE_WRITE_CACHING_HE);
1290}
1291
Pavel Shilovskyf0473902013-09-04 13:44:05 +04001292static __le32
1293map_oplock_to_lease(u8 oplock)
1294{
1295 if (oplock == SMB2_OPLOCK_LEVEL_EXCLUSIVE)
1296 return SMB2_LEASE_WRITE_CACHING | SMB2_LEASE_READ_CACHING;
1297 else if (oplock == SMB2_OPLOCK_LEVEL_II)
1298 return SMB2_LEASE_READ_CACHING;
1299 else if (oplock == SMB2_OPLOCK_LEVEL_BATCH)
1300 return SMB2_LEASE_HANDLE_CACHING | SMB2_LEASE_READ_CACHING |
1301 SMB2_LEASE_WRITE_CACHING;
1302 return 0;
1303}
1304
Pavel Shilovskya41a28b2013-09-04 13:07:41 +04001305static char *
1306smb2_create_lease_buf(u8 *lease_key, u8 oplock)
1307{
1308 struct create_lease *buf;
1309
1310 buf = kzalloc(sizeof(struct create_lease), GFP_KERNEL);
1311 if (!buf)
1312 return NULL;
1313
1314 buf->lcontext.LeaseKeyLow = cpu_to_le64(*((u64 *)lease_key));
1315 buf->lcontext.LeaseKeyHigh = cpu_to_le64(*((u64 *)(lease_key + 8)));
Pavel Shilovskyf0473902013-09-04 13:44:05 +04001316 buf->lcontext.LeaseState = map_oplock_to_lease(oplock);
Pavel Shilovskya41a28b2013-09-04 13:07:41 +04001317
1318 buf->ccontext.DataOffset = cpu_to_le16(offsetof
1319 (struct create_lease, lcontext));
1320 buf->ccontext.DataLength = cpu_to_le32(sizeof(struct lease_context));
1321 buf->ccontext.NameOffset = cpu_to_le16(offsetof
1322 (struct create_lease, Name));
1323 buf->ccontext.NameLength = cpu_to_le16(4);
Steve French12197a72014-05-14 05:29:40 -07001324 /* SMB2_CREATE_REQUEST_LEASE is "RqLs" */
Pavel Shilovskya41a28b2013-09-04 13:07:41 +04001325 buf->Name[0] = 'R';
1326 buf->Name[1] = 'q';
1327 buf->Name[2] = 'L';
1328 buf->Name[3] = 's';
1329 return (char *)buf;
1330}
1331
Pavel Shilovskyf0473902013-09-04 13:44:05 +04001332static char *
1333smb3_create_lease_buf(u8 *lease_key, u8 oplock)
1334{
1335 struct create_lease_v2 *buf;
1336
1337 buf = kzalloc(sizeof(struct create_lease_v2), GFP_KERNEL);
1338 if (!buf)
1339 return NULL;
1340
1341 buf->lcontext.LeaseKeyLow = cpu_to_le64(*((u64 *)lease_key));
1342 buf->lcontext.LeaseKeyHigh = cpu_to_le64(*((u64 *)(lease_key + 8)));
1343 buf->lcontext.LeaseState = map_oplock_to_lease(oplock);
1344
1345 buf->ccontext.DataOffset = cpu_to_le16(offsetof
1346 (struct create_lease_v2, lcontext));
1347 buf->ccontext.DataLength = cpu_to_le32(sizeof(struct lease_context_v2));
1348 buf->ccontext.NameOffset = cpu_to_le16(offsetof
1349 (struct create_lease_v2, Name));
1350 buf->ccontext.NameLength = cpu_to_le16(4);
Steve French12197a72014-05-14 05:29:40 -07001351 /* SMB2_CREATE_REQUEST_LEASE is "RqLs" */
Pavel Shilovskyf0473902013-09-04 13:44:05 +04001352 buf->Name[0] = 'R';
1353 buf->Name[1] = 'q';
1354 buf->Name[2] = 'L';
1355 buf->Name[3] = 's';
1356 return (char *)buf;
1357}
1358
Pavel Shilovskyb5c7cde2013-09-05 20:16:45 +04001359static __u8
Pavel Shilovsky42873b02013-09-05 21:30:16 +04001360smb2_parse_lease_buf(void *buf, unsigned int *epoch)
Pavel Shilovskyb5c7cde2013-09-05 20:16:45 +04001361{
1362 struct create_lease *lc = (struct create_lease *)buf;
1363
Pavel Shilovsky42873b02013-09-05 21:30:16 +04001364 *epoch = 0; /* not used */
Pavel Shilovskyb5c7cde2013-09-05 20:16:45 +04001365 if (lc->lcontext.LeaseFlags & SMB2_LEASE_FLAG_BREAK_IN_PROGRESS)
1366 return SMB2_OPLOCK_LEVEL_NOCHANGE;
1367 return le32_to_cpu(lc->lcontext.LeaseState);
1368}
1369
Pavel Shilovskyf0473902013-09-04 13:44:05 +04001370static __u8
Pavel Shilovsky42873b02013-09-05 21:30:16 +04001371smb3_parse_lease_buf(void *buf, unsigned int *epoch)
Pavel Shilovskyf0473902013-09-04 13:44:05 +04001372{
1373 struct create_lease_v2 *lc = (struct create_lease_v2 *)buf;
1374
Pavel Shilovsky42873b02013-09-05 21:30:16 +04001375 *epoch = le16_to_cpu(lc->lcontext.Epoch);
Pavel Shilovskyf0473902013-09-04 13:44:05 +04001376 if (lc->lcontext.LeaseFlags & SMB2_LEASE_FLAG_BREAK_IN_PROGRESS)
1377 return SMB2_OPLOCK_LEVEL_NOCHANGE;
1378 return le32_to_cpu(lc->lcontext.LeaseState);
1379}
1380
Pavel Shilovsky7f6c5002014-06-22 11:03:22 +04001381static unsigned int
1382smb2_wp_retry_size(struct inode *inode)
1383{
1384 return min_t(unsigned int, CIFS_SB(inode->i_sb)->wsize,
1385 SMB2_MAX_BUFFER_SIZE);
1386}
1387
Pavel Shilovsky52755802014-08-18 20:49:57 +04001388static bool
1389smb2_dir_needs_close(struct cifsFileInfo *cfile)
1390{
1391 return !cfile->invalidHandle;
1392}
1393
Pavel Shilovsky53ef1012013-09-05 16:11:28 +04001394struct smb_version_operations smb20_operations = {
1395 .compare_fids = smb2_compare_fids,
1396 .setup_request = smb2_setup_request,
1397 .setup_async_request = smb2_setup_async_request,
1398 .check_receive = smb2_check_receive,
1399 .add_credits = smb2_add_credits,
1400 .set_credits = smb2_set_credits,
1401 .get_credits_field = smb2_get_credits_field,
1402 .get_credits = smb2_get_credits,
Pavel Shilovskycb7e9ea2014-06-05 19:03:27 +04001403 .wait_mtu_credits = cifs_wait_mtu_credits,
Pavel Shilovsky53ef1012013-09-05 16:11:28 +04001404 .get_next_mid = smb2_get_next_mid,
1405 .read_data_offset = smb2_read_data_offset,
1406 .read_data_length = smb2_read_data_length,
1407 .map_error = map_smb2_to_linux_error,
1408 .find_mid = smb2_find_mid,
1409 .check_message = smb2_check_message,
1410 .dump_detail = smb2_dump_detail,
1411 .clear_stats = smb2_clear_stats,
1412 .print_stats = smb2_print_stats,
1413 .is_oplock_break = smb2_is_valid_oplock_break,
Sachin Prabhuc11f1df2014-03-11 16:11:47 +00001414 .downgrade_oplock = smb2_downgrade_oplock,
Pavel Shilovsky53ef1012013-09-05 16:11:28 +04001415 .need_neg = smb2_need_neg,
1416 .negotiate = smb2_negotiate,
1417 .negotiate_wsize = smb2_negotiate_wsize,
1418 .negotiate_rsize = smb2_negotiate_rsize,
1419 .sess_setup = SMB2_sess_setup,
1420 .logoff = SMB2_logoff,
1421 .tree_connect = SMB2_tcon,
1422 .tree_disconnect = SMB2_tdis,
Steve French34f62642013-10-09 02:07:00 -05001423 .qfs_tcon = smb2_qfs_tcon,
Pavel Shilovsky53ef1012013-09-05 16:11:28 +04001424 .is_path_accessible = smb2_is_path_accessible,
1425 .can_echo = smb2_can_echo,
1426 .echo = SMB2_echo,
1427 .query_path_info = smb2_query_path_info,
1428 .get_srv_inum = smb2_get_srv_inum,
1429 .query_file_info = smb2_query_file_info,
1430 .set_path_size = smb2_set_path_size,
1431 .set_file_size = smb2_set_file_size,
1432 .set_file_info = smb2_set_file_info,
Steve French64a5cfa2013-10-14 15:31:32 -05001433 .set_compression = smb2_set_compression,
Pavel Shilovsky53ef1012013-09-05 16:11:28 +04001434 .mkdir = smb2_mkdir,
1435 .mkdir_setinfo = smb2_mkdir_setinfo,
1436 .rmdir = smb2_rmdir,
1437 .unlink = smb2_unlink,
1438 .rename = smb2_rename_path,
1439 .create_hardlink = smb2_create_hardlink,
1440 .query_symlink = smb2_query_symlink,
1441 .open = smb2_open_file,
1442 .set_fid = smb2_set_fid,
1443 .close = smb2_close_file,
1444 .flush = smb2_flush_file,
1445 .async_readv = smb2_async_readv,
1446 .async_writev = smb2_async_writev,
1447 .sync_read = smb2_sync_read,
1448 .sync_write = smb2_sync_write,
1449 .query_dir_first = smb2_query_dir_first,
1450 .query_dir_next = smb2_query_dir_next,
1451 .close_dir = smb2_close_dir,
1452 .calc_smb_size = smb2_calc_size,
1453 .is_status_pending = smb2_is_status_pending,
1454 .oplock_response = smb2_oplock_response,
1455 .queryfs = smb2_queryfs,
1456 .mand_lock = smb2_mand_lock,
1457 .mand_unlock_range = smb2_unlock_range,
1458 .push_mand_locks = smb2_push_mandatory_locks,
1459 .get_lease_key = smb2_get_lease_key,
1460 .set_lease_key = smb2_set_lease_key,
1461 .new_lease_key = smb2_new_lease_key,
1462 .calc_signature = smb2_calc_signature,
1463 .is_read_op = smb2_is_read_op,
1464 .set_oplock_level = smb2_set_oplock_level,
Pavel Shilovskya41a28b2013-09-04 13:07:41 +04001465 .create_lease_buf = smb2_create_lease_buf,
Pavel Shilovskyb5c7cde2013-09-05 20:16:45 +04001466 .parse_lease_buf = smb2_parse_lease_buf,
Steve French41c13582013-11-14 00:05:36 -06001467 .clone_range = smb2_clone_range,
Pavel Shilovsky7f6c5002014-06-22 11:03:22 +04001468 .wp_retry_size = smb2_wp_retry_size,
Pavel Shilovsky52755802014-08-18 20:49:57 +04001469 .dir_needs_close = smb2_dir_needs_close,
Pavel Shilovsky53ef1012013-09-05 16:11:28 +04001470};
1471
Steve French1080ef72011-02-24 18:07:19 +00001472struct smb_version_operations smb21_operations = {
Pavel Shilovsky027e8ee2012-09-19 06:22:43 -07001473 .compare_fids = smb2_compare_fids,
Pavel Shilovsky2dc7e1c2011-12-26 22:53:34 +04001474 .setup_request = smb2_setup_request,
Pavel Shilovskyc95b8ee2012-07-11 14:45:28 +04001475 .setup_async_request = smb2_setup_async_request,
Pavel Shilovsky2dc7e1c2011-12-26 22:53:34 +04001476 .check_receive = smb2_check_receive,
Pavel Shilovsky28ea5292012-05-23 16:18:00 +04001477 .add_credits = smb2_add_credits,
1478 .set_credits = smb2_set_credits,
1479 .get_credits_field = smb2_get_credits_field,
1480 .get_credits = smb2_get_credits,
Pavel Shilovskycb7e9ea2014-06-05 19:03:27 +04001481 .wait_mtu_credits = smb2_wait_mtu_credits,
Pavel Shilovsky2dc7e1c2011-12-26 22:53:34 +04001482 .get_next_mid = smb2_get_next_mid,
Pavel Shilovsky09a47072012-09-18 16:20:29 -07001483 .read_data_offset = smb2_read_data_offset,
1484 .read_data_length = smb2_read_data_length,
1485 .map_error = map_smb2_to_linux_error,
Pavel Shilovsky093b2bd2011-06-08 15:51:07 +04001486 .find_mid = smb2_find_mid,
1487 .check_message = smb2_check_message,
1488 .dump_detail = smb2_dump_detail,
Pavel Shilovskyd60622e2012-05-28 15:19:39 +04001489 .clear_stats = smb2_clear_stats,
1490 .print_stats = smb2_print_stats,
Pavel Shilovsky983c88a2012-09-18 16:20:33 -07001491 .is_oplock_break = smb2_is_valid_oplock_break,
Sachin Prabhuc11f1df2014-03-11 16:11:47 +00001492 .downgrade_oplock = smb2_downgrade_oplock,
Pavel Shilovskyec2e4522011-12-27 16:12:43 +04001493 .need_neg = smb2_need_neg,
1494 .negotiate = smb2_negotiate,
Pavel Shilovsky3a3bab52012-09-18 16:20:28 -07001495 .negotiate_wsize = smb2_negotiate_wsize,
1496 .negotiate_rsize = smb2_negotiate_rsize,
Pavel Shilovsky5478f9b2011-12-27 16:22:00 +04001497 .sess_setup = SMB2_sess_setup,
1498 .logoff = SMB2_logoff,
Pavel Shilovskyfaaf9462011-12-27 16:04:00 +04001499 .tree_connect = SMB2_tcon,
1500 .tree_disconnect = SMB2_tdis,
Steve French34f62642013-10-09 02:07:00 -05001501 .qfs_tcon = smb2_qfs_tcon,
Pavel Shilovsky2503a0d2011-12-26 22:58:46 +04001502 .is_path_accessible = smb2_is_path_accessible,
Pavel Shilovsky9094fad2012-07-12 18:30:44 +04001503 .can_echo = smb2_can_echo,
1504 .echo = SMB2_echo,
Pavel Shilovskybe4cb9e2011-12-29 17:06:33 +04001505 .query_path_info = smb2_query_path_info,
1506 .get_srv_inum = smb2_get_srv_inum,
Pavel Shilovskyb7546bc2012-09-18 16:20:27 -07001507 .query_file_info = smb2_query_file_info,
Pavel Shilovskyc839ff22012-09-18 16:20:32 -07001508 .set_path_size = smb2_set_path_size,
1509 .set_file_size = smb2_set_file_size,
Pavel Shilovsky1feeaac2012-09-18 16:20:32 -07001510 .set_file_info = smb2_set_file_info,
Steve French64a5cfa2013-10-14 15:31:32 -05001511 .set_compression = smb2_set_compression,
Pavel Shilovskya0e73182011-07-19 12:56:37 +04001512 .mkdir = smb2_mkdir,
1513 .mkdir_setinfo = smb2_mkdir_setinfo,
Pavel Shilovsky1a500f02012-07-10 16:14:38 +04001514 .rmdir = smb2_rmdir,
Pavel Shilovskycbe6f432012-09-18 16:20:25 -07001515 .unlink = smb2_unlink,
Pavel Shilovsky35143eb2012-09-18 16:20:31 -07001516 .rename = smb2_rename_path,
Pavel Shilovsky568798c2012-09-18 16:20:31 -07001517 .create_hardlink = smb2_create_hardlink,
Pavel Shilovskyb42bf882013-08-14 19:25:21 +04001518 .query_symlink = smb2_query_symlink,
Steve Frenchc22870e2014-09-16 07:18:19 -05001519 .query_mf_symlink = smb3_query_mf_symlink,
Steve French5ab97572014-09-15 04:49:28 -05001520 .create_mf_symlink = smb3_create_mf_symlink,
Pavel Shilovskyf0df7372012-09-18 16:20:26 -07001521 .open = smb2_open_file,
1522 .set_fid = smb2_set_fid,
1523 .close = smb2_close_file,
Pavel Shilovsky7a5cfb12012-09-18 16:20:28 -07001524 .flush = smb2_flush_file,
Pavel Shilovsky09a47072012-09-18 16:20:29 -07001525 .async_readv = smb2_async_readv,
Pavel Shilovsky33319142012-09-18 16:20:29 -07001526 .async_writev = smb2_async_writev,
Pavel Shilovskyd8e05032012-09-18 16:20:30 -07001527 .sync_read = smb2_sync_read,
Pavel Shilovsky009d3442012-09-18 16:20:30 -07001528 .sync_write = smb2_sync_write,
Pavel Shilovskyd324f08d2012-09-18 16:20:33 -07001529 .query_dir_first = smb2_query_dir_first,
1530 .query_dir_next = smb2_query_dir_next,
1531 .close_dir = smb2_close_dir,
1532 .calc_smb_size = smb2_calc_size,
Pavel Shilovsky2e44b282012-09-18 16:20:33 -07001533 .is_status_pending = smb2_is_status_pending,
Pavel Shilovsky983c88a2012-09-18 16:20:33 -07001534 .oplock_response = smb2_oplock_response,
Pavel Shilovsky6fc05c22012-09-18 16:20:34 -07001535 .queryfs = smb2_queryfs,
Pavel Shilovskyf7ba7fe2012-09-19 06:22:43 -07001536 .mand_lock = smb2_mand_lock,
1537 .mand_unlock_range = smb2_unlock_range,
Pavel Shilovskyb1407992012-09-19 06:22:44 -07001538 .push_mand_locks = smb2_push_mandatory_locks,
Pavel Shilovskyb8c32db2012-09-19 06:22:44 -07001539 .get_lease_key = smb2_get_lease_key,
1540 .set_lease_key = smb2_set_lease_key,
1541 .new_lease_key = smb2_new_lease_key,
Steve French38107d42012-12-08 22:08:06 -06001542 .calc_signature = smb2_calc_signature,
Pavel Shilovsky53ef1012013-09-05 16:11:28 +04001543 .is_read_op = smb21_is_read_op,
1544 .set_oplock_level = smb21_set_oplock_level,
Pavel Shilovskya41a28b2013-09-04 13:07:41 +04001545 .create_lease_buf = smb2_create_lease_buf,
Pavel Shilovskyb5c7cde2013-09-05 20:16:45 +04001546 .parse_lease_buf = smb2_parse_lease_buf,
Steve French41c13582013-11-14 00:05:36 -06001547 .clone_range = smb2_clone_range,
Pavel Shilovsky7f6c5002014-06-22 11:03:22 +04001548 .wp_retry_size = smb2_wp_retry_size,
Pavel Shilovsky52755802014-08-18 20:49:57 +04001549 .dir_needs_close = smb2_dir_needs_close,
Steve French38107d42012-12-08 22:08:06 -06001550};
1551
Steve French38107d42012-12-08 22:08:06 -06001552struct smb_version_operations smb30_operations = {
1553 .compare_fids = smb2_compare_fids,
1554 .setup_request = smb2_setup_request,
1555 .setup_async_request = smb2_setup_async_request,
1556 .check_receive = smb2_check_receive,
1557 .add_credits = smb2_add_credits,
1558 .set_credits = smb2_set_credits,
1559 .get_credits_field = smb2_get_credits_field,
1560 .get_credits = smb2_get_credits,
Pavel Shilovskycb7e9ea2014-06-05 19:03:27 +04001561 .wait_mtu_credits = smb2_wait_mtu_credits,
Steve French38107d42012-12-08 22:08:06 -06001562 .get_next_mid = smb2_get_next_mid,
1563 .read_data_offset = smb2_read_data_offset,
1564 .read_data_length = smb2_read_data_length,
1565 .map_error = map_smb2_to_linux_error,
1566 .find_mid = smb2_find_mid,
1567 .check_message = smb2_check_message,
1568 .dump_detail = smb2_dump_detail,
1569 .clear_stats = smb2_clear_stats,
1570 .print_stats = smb2_print_stats,
Steve French769ee6a2013-06-19 14:15:30 -05001571 .dump_share_caps = smb2_dump_share_caps,
Steve French38107d42012-12-08 22:08:06 -06001572 .is_oplock_break = smb2_is_valid_oplock_break,
Sachin Prabhuc11f1df2014-03-11 16:11:47 +00001573 .downgrade_oplock = smb2_downgrade_oplock,
Steve French38107d42012-12-08 22:08:06 -06001574 .need_neg = smb2_need_neg,
1575 .negotiate = smb2_negotiate,
1576 .negotiate_wsize = smb2_negotiate_wsize,
1577 .negotiate_rsize = smb2_negotiate_rsize,
1578 .sess_setup = SMB2_sess_setup,
1579 .logoff = SMB2_logoff,
1580 .tree_connect = SMB2_tcon,
1581 .tree_disconnect = SMB2_tdis,
Steven Frenchaf6a12e2013-10-09 20:55:53 -05001582 .qfs_tcon = smb3_qfs_tcon,
Steve French38107d42012-12-08 22:08:06 -06001583 .is_path_accessible = smb2_is_path_accessible,
1584 .can_echo = smb2_can_echo,
1585 .echo = SMB2_echo,
1586 .query_path_info = smb2_query_path_info,
1587 .get_srv_inum = smb2_get_srv_inum,
1588 .query_file_info = smb2_query_file_info,
1589 .set_path_size = smb2_set_path_size,
1590 .set_file_size = smb2_set_file_size,
1591 .set_file_info = smb2_set_file_info,
Steve French64a5cfa2013-10-14 15:31:32 -05001592 .set_compression = smb2_set_compression,
Steve French38107d42012-12-08 22:08:06 -06001593 .mkdir = smb2_mkdir,
1594 .mkdir_setinfo = smb2_mkdir_setinfo,
1595 .rmdir = smb2_rmdir,
1596 .unlink = smb2_unlink,
1597 .rename = smb2_rename_path,
1598 .create_hardlink = smb2_create_hardlink,
Pavel Shilovskyb42bf882013-08-14 19:25:21 +04001599 .query_symlink = smb2_query_symlink,
Steve Frenchc22870e2014-09-16 07:18:19 -05001600 .query_mf_symlink = smb3_query_mf_symlink,
Steve French5ab97572014-09-15 04:49:28 -05001601 .create_mf_symlink = smb3_create_mf_symlink,
Steve French38107d42012-12-08 22:08:06 -06001602 .open = smb2_open_file,
1603 .set_fid = smb2_set_fid,
1604 .close = smb2_close_file,
1605 .flush = smb2_flush_file,
1606 .async_readv = smb2_async_readv,
1607 .async_writev = smb2_async_writev,
1608 .sync_read = smb2_sync_read,
1609 .sync_write = smb2_sync_write,
1610 .query_dir_first = smb2_query_dir_first,
1611 .query_dir_next = smb2_query_dir_next,
1612 .close_dir = smb2_close_dir,
1613 .calc_smb_size = smb2_calc_size,
1614 .is_status_pending = smb2_is_status_pending,
1615 .oplock_response = smb2_oplock_response,
1616 .queryfs = smb2_queryfs,
1617 .mand_lock = smb2_mand_lock,
1618 .mand_unlock_range = smb2_unlock_range,
1619 .push_mand_locks = smb2_push_mandatory_locks,
1620 .get_lease_key = smb2_get_lease_key,
1621 .set_lease_key = smb2_set_lease_key,
1622 .new_lease_key = smb2_new_lease_key,
Steve Frenche65a5cb2013-06-27 01:06:50 -05001623 .generate_signingkey = generate_smb3signingkey,
Steve French38107d42012-12-08 22:08:06 -06001624 .calc_signature = smb3_calc_signature,
Pavel Shilovsky53ef1012013-09-05 16:11:28 +04001625 .is_read_op = smb21_is_read_op,
Pavel Shilovsky42873b02013-09-05 21:30:16 +04001626 .set_oplock_level = smb3_set_oplock_level,
Pavel Shilovskyf0473902013-09-04 13:44:05 +04001627 .create_lease_buf = smb3_create_lease_buf,
1628 .parse_lease_buf = smb3_parse_lease_buf,
Steve French41c13582013-11-14 00:05:36 -06001629 .clone_range = smb2_clone_range,
Steve Frenchff1c0382013-11-19 23:44:46 -06001630 .validate_negotiate = smb3_validate_negotiate,
Pavel Shilovsky7f6c5002014-06-22 11:03:22 +04001631 .wp_retry_size = smb2_wp_retry_size,
Pavel Shilovsky52755802014-08-18 20:49:57 +04001632 .dir_needs_close = smb2_dir_needs_close,
Steve French31742c52014-08-17 08:38:47 -05001633 .fallocate = smb3_fallocate,
Steve French1080ef72011-02-24 18:07:19 +00001634};
1635
Steve Frenchdd446b12012-11-28 23:21:06 -06001636struct smb_version_values smb20_values = {
1637 .version_string = SMB20_VERSION_STRING,
1638 .protocol_id = SMB20_PROT_ID,
1639 .req_capabilities = 0, /* MBZ */
1640 .large_lock_type = 0,
1641 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
1642 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
1643 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
1644 .header_size = sizeof(struct smb2_hdr),
1645 .max_header_size = MAX_SMB2_HDR_SIZE,
1646 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
1647 .lock_cmd = SMB2_LOCK,
1648 .cap_unix = 0,
1649 .cap_nt_find = SMB2_NT_FIND,
1650 .cap_large_files = SMB2_LARGE_FILES,
Jeff Layton50285882013-06-27 12:45:00 -04001651 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
1652 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
Pavel Shilovskya41a28b2013-09-04 13:07:41 +04001653 .create_lease_size = sizeof(struct create_lease),
Steve Frenchdd446b12012-11-28 23:21:06 -06001654};
1655
Steve French1080ef72011-02-24 18:07:19 +00001656struct smb_version_values smb21_values = {
1657 .version_string = SMB21_VERSION_STRING,
Steve Frenche4aa25e2012-10-01 12:26:22 -05001658 .protocol_id = SMB21_PROT_ID,
1659 .req_capabilities = 0, /* MBZ on negotiate req until SMB3 dialect */
1660 .large_lock_type = 0,
1661 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
1662 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
1663 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
1664 .header_size = sizeof(struct smb2_hdr),
1665 .max_header_size = MAX_SMB2_HDR_SIZE,
1666 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
1667 .lock_cmd = SMB2_LOCK,
1668 .cap_unix = 0,
1669 .cap_nt_find = SMB2_NT_FIND,
1670 .cap_large_files = SMB2_LARGE_FILES,
Jeff Layton50285882013-06-27 12:45:00 -04001671 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
1672 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
Pavel Shilovskya41a28b2013-09-04 13:07:41 +04001673 .create_lease_size = sizeof(struct create_lease),
Steve Frenche4aa25e2012-10-01 12:26:22 -05001674};
1675
1676struct smb_version_values smb30_values = {
1677 .version_string = SMB30_VERSION_STRING,
1678 .protocol_id = SMB30_PROT_ID,
1679 .req_capabilities = SMB2_GLOBAL_CAP_DFS | SMB2_GLOBAL_CAP_LEASING | SMB2_GLOBAL_CAP_LARGE_MTU,
Pavel Shilovsky027e8ee2012-09-19 06:22:43 -07001680 .large_lock_type = 0,
1681 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
1682 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
1683 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
Pavel Shilovsky093b2bd2011-06-08 15:51:07 +04001684 .header_size = sizeof(struct smb2_hdr),
1685 .max_header_size = MAX_SMB2_HDR_SIZE,
Pavel Shilovsky09a47072012-09-18 16:20:29 -07001686 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
Pavel Shilovsky2dc7e1c2011-12-26 22:53:34 +04001687 .lock_cmd = SMB2_LOCK,
Pavel Shilovsky29e20f92012-07-13 13:58:14 +04001688 .cap_unix = 0,
1689 .cap_nt_find = SMB2_NT_FIND,
1690 .cap_large_files = SMB2_LARGE_FILES,
Jeff Layton50285882013-06-27 12:45:00 -04001691 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
1692 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
Pavel Shilovskyf0473902013-09-04 13:44:05 +04001693 .create_lease_size = sizeof(struct create_lease_v2),
Steve French1080ef72011-02-24 18:07:19 +00001694};
Steve French20b6d8b2013-06-12 22:48:41 -05001695
1696struct smb_version_values smb302_values = {
1697 .version_string = SMB302_VERSION_STRING,
1698 .protocol_id = SMB302_PROT_ID,
1699 .req_capabilities = SMB2_GLOBAL_CAP_DFS | SMB2_GLOBAL_CAP_LEASING | SMB2_GLOBAL_CAP_LARGE_MTU,
1700 .large_lock_type = 0,
1701 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
1702 .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
1703 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
1704 .header_size = sizeof(struct smb2_hdr),
1705 .max_header_size = MAX_SMB2_HDR_SIZE,
1706 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
1707 .lock_cmd = SMB2_LOCK,
1708 .cap_unix = 0,
1709 .cap_nt_find = SMB2_NT_FIND,
1710 .cap_large_files = SMB2_LARGE_FILES,
Jeff Layton50285882013-06-27 12:45:00 -04001711 .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
1712 .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
Pavel Shilovskyf0473902013-09-04 13:44:05 +04001713 .create_lease_size = sizeof(struct create_lease_v2),
Steve French20b6d8b2013-06-12 22:48:41 -05001714};