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ksmbd: remove getting worker state macros
[mirror_ubuntu-jammy-kernel.git] / fs / ksmbd / smb2pdu.c
CommitLineData
e2f34481
NJ		 1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * Copyright (C) 2016 Namjae Jeon <linkinjeon@kernel.org>
4 * Copyright (C) 2018 Samsung Electronics Co., Ltd.
5 */
6
7#include <linux/inetdevice.h>
8#include <net/addrconf.h>
9#include <linux/syscalls.h>
10#include <linux/namei.h>
11#include <linux/statfs.h>
12#include <linux/ethtool.h>
e8c06191 13#include <linux/falloc.h>
e2f34481
NJ		 14
15#include "glob.h"
16#include "smb2pdu.h"
17#include "smbfsctl.h"
18#include "oplock.h"
19#include "smbacl.h"
20
21#include "auth.h"
22#include "asn1.h"
e2f34481
NJ		 23#include "connection.h"
24#include "transport_ipc.h"
25#include "vfs.h"
26#include "vfs_cache.h"
27#include "misc.h"
28
e2f34481
NJ		 29#include "server.h"
30#include "smb_common.h"
31#include "smbstatus.h"
32#include "ksmbd_work.h"
33#include "mgmt/user_config.h"
34#include "mgmt/share_config.h"
35#include "mgmt/tree_connect.h"
36#include "mgmt/user_session.h"
37#include "mgmt/ksmbd_ida.h"
38#include "ndr.h"
39
40static void __wbuf(struct ksmbd_work *work, void **req, void **rsp)
41{
42 if (work->next_smb2_rcv_hdr_off) {
43 *req = REQUEST_BUF_NEXT(work);
44 *rsp = RESPONSE_BUF_NEXT(work);
45 } else {
e5066499
NJ		 46 *req = work->request_buf;
47 *rsp = work->response_buf;
e2f34481
NJ		 48 }
49}
50
51#define WORK_BUFFERS(w, rq, rs) __wbuf((w), (void **)&(rq), (void **)&(rs))
52
53/**
54 * check_session_id() - check for valid session id in smb header
55 * @conn: connection instance
56 * @id: session id from smb header
57 *
58 * Return: 1 if valid session id, otherwise 0
59 */
64b39f4a 60static inline int check_session_id(struct ksmbd_conn *conn, u64 id)
e2f34481
NJ		 61{
62 struct ksmbd_session *sess;
63
64 if (id == 0 || id == -1)
65 return 0;
66
f5a544e3 67 sess = ksmbd_session_lookup_all(conn, id);
e2f34481
NJ		 68 if (sess)
69 return 1;
bde1694a 70 pr_err("Invalid user session id: %llu\n", id);
e2f34481
NJ		 71 return 0;
72}
73
f5a544e3 74struct channel *lookup_chann_list(struct ksmbd_session *sess, struct ksmbd_conn *conn)
e2f34481
NJ		 75{
76 struct channel *chann;
e2f34481 77
6f3d5eee 78 list_for_each_entry(chann, &sess->ksmbd_chann_list, chann_list) {
560ac051 79 if (chann->conn == conn)
e2f34481
NJ		 80 return chann;
81 }
82
83 return NULL;
84}
85
86/**
87 * smb2_get_ksmbd_tcon() - get tree connection information for a tree id
95fa1ce9 88 * @work: smb work
e2f34481
NJ		 89 *
90 * Return: matching tree connection on success, otherwise error
91 */
92int smb2_get_ksmbd_tcon(struct ksmbd_work *work)
93{
e5066499 94 struct smb2_hdr *req_hdr = work->request_buf;
e2f34481
NJ		 95 int tree_id;
96
97 work->tcon = NULL;
64b39f4a
NJ		 98 if (work->conn->ops->get_cmd_val(work) == SMB2_TREE_CONNECT_HE ||
99 work->conn->ops->get_cmd_val(work) == SMB2_CANCEL_HE ||
100 work->conn->ops->get_cmd_val(work) == SMB2_LOGOFF_HE) {
e2f34481
NJ		 101 ksmbd_debug(SMB, "skip to check tree connect request\n");
102 return 0;
103 }
104
02b68b20 105 if (xa_empty(&work->sess->tree_conns)) {
e2f34481
NJ		 106 ksmbd_debug(SMB, "NO tree connected\n");
107 return -1;
108 }
109
110 tree_id = le32_to_cpu(req_hdr->Id.SyncId.TreeId);
111 work->tcon = ksmbd_tree_conn_lookup(work->sess, tree_id);
112 if (!work->tcon) {
bde1694a 113 pr_err("Invalid tid %d\n", tree_id);
e2f34481
NJ		 114 return -1;
115 }
116
117 return 1;
118}
119
120/**
121 * smb2_set_err_rsp() - set error response code on smb response
122 * @work: smb work containing response buffer
123 */
124void smb2_set_err_rsp(struct ksmbd_work *work)
125{
126 struct smb2_err_rsp *err_rsp;
127
128 if (work->next_smb2_rcv_hdr_off)
129 err_rsp = RESPONSE_BUF_NEXT(work);
130 else
e5066499 131 err_rsp = work->response_buf;
e2f34481
NJ		 132
133 if (err_rsp->hdr.Status != STATUS_STOPPED_ON_SYMLINK) {
134 err_rsp->StructureSize = SMB2_ERROR_STRUCTURE_SIZE2_LE;
135 err_rsp->ErrorContextCount = 0;
136 err_rsp->Reserved = 0;
137 err_rsp->ByteCount = 0;
138 err_rsp->ErrorData[0] = 0;
e5066499 139 inc_rfc1001_len(work->response_buf, SMB2_ERROR_STRUCTURE_SIZE2);
e2f34481
NJ		 140 }
141}
142
143/**
144 * is_smb2_neg_cmd() - is it smb2 negotiation command
145 * @work: smb work containing smb header
146 *
147 * Return: 1 if smb2 negotiation command, otherwise 0
148 */
149int is_smb2_neg_cmd(struct ksmbd_work *work)
150{
e5066499 151 struct smb2_hdr *hdr = work->request_buf;
e2f34481
NJ		 152
153 /* is it SMB2 header ? */
154 if (hdr->ProtocolId != SMB2_PROTO_NUMBER)
155 return 0;
156
157 /* make sure it is request not response message */
158 if (hdr->Flags & SMB2_FLAGS_SERVER_TO_REDIR)
159 return 0;
160
161 if (hdr->Command != SMB2_NEGOTIATE)
162 return 0;
163
164 return 1;
165}
166
167/**
168 * is_smb2_rsp() - is it smb2 response
169 * @work: smb work containing smb response buffer
170 *
171 * Return: 1 if smb2 response, otherwise 0
172 */
173int is_smb2_rsp(struct ksmbd_work *work)
174{
e5066499 175 struct smb2_hdr *hdr = work->response_buf;
e2f34481
NJ		 176
177 /* is it SMB2 header ? */
178 if (hdr->ProtocolId != SMB2_PROTO_NUMBER)
179 return 0;
180
181 /* make sure it is response not request message */
182 if (!(hdr->Flags & SMB2_FLAGS_SERVER_TO_REDIR))
183 return 0;
184
185 return 1;
186}
187
188/**
189 * get_smb2_cmd_val() - get smb command code from smb header
190 * @work: smb work containing smb request buffer
191 *
192 * Return: smb2 request command value
193 */
fc2d1b58 194u16 get_smb2_cmd_val(struct ksmbd_work *work)
e2f34481
NJ		 195{
196 struct smb2_hdr *rcv_hdr;
197
198 if (work->next_smb2_rcv_hdr_off)
199 rcv_hdr = REQUEST_BUF_NEXT(work);
200 else
e5066499 201 rcv_hdr = work->request_buf;
e2f34481
NJ		 202 return le16_to_cpu(rcv_hdr->Command);
203}
204
205/**
206 * set_smb2_rsp_status() - set error response code on smb2 header
207 * @work: smb work containing response buffer
95fa1ce9 208 * @err: error response code
e2f34481
NJ		 209 */
210void set_smb2_rsp_status(struct ksmbd_work *work, __le32 err)
211{
212 struct smb2_hdr *rsp_hdr;
213
214 if (work->next_smb2_rcv_hdr_off)
215 rsp_hdr = RESPONSE_BUF_NEXT(work);
216 else
e5066499 217 rsp_hdr = work->response_buf;
e2f34481
NJ		 218 rsp_hdr->Status = err;
219 smb2_set_err_rsp(work);
220}
221
222/**
223 * init_smb2_neg_rsp() - initialize smb2 response for negotiate command
224 * @work: smb work containing smb request buffer
225 *
226 * smb2 negotiate response is sent in reply of smb1 negotiate command for
227 * dialect auto-negotiation.
228 */
229int init_smb2_neg_rsp(struct ksmbd_work *work)
230{
231 struct smb2_hdr *rsp_hdr;
232 struct smb2_negotiate_rsp *rsp;
233 struct ksmbd_conn *conn = work->conn;
234
235 if (conn->need_neg == false)
236 return -EINVAL;
237 if (!(conn->dialect >= SMB20_PROT_ID &&
64b39f4a 238 conn->dialect <= SMB311_PROT_ID))
e2f34481
NJ		 239 return -EINVAL;
240
e5066499 241 rsp_hdr = work->response_buf;
e2f34481
NJ		 242
243 memset(rsp_hdr, 0, sizeof(struct smb2_hdr) + 2);
244
245 rsp_hdr->smb2_buf_length =
246 cpu_to_be32(HEADER_SIZE_NO_BUF_LEN(conn));
247
248 rsp_hdr->ProtocolId = SMB2_PROTO_NUMBER;
249 rsp_hdr->StructureSize = SMB2_HEADER_STRUCTURE_SIZE;
250 rsp_hdr->CreditRequest = cpu_to_le16(2);
251 rsp_hdr->Command = SMB2_NEGOTIATE;
252 rsp_hdr->Flags = (SMB2_FLAGS_SERVER_TO_REDIR);
253 rsp_hdr->NextCommand = 0;
254 rsp_hdr->MessageId = 0;
255 rsp_hdr->Id.SyncId.ProcessId = 0;
256 rsp_hdr->Id.SyncId.TreeId = 0;
257 rsp_hdr->SessionId = 0;
258 memset(rsp_hdr->Signature, 0, 16);
259
e5066499 260 rsp = work->response_buf;
e2f34481
NJ		 261
262 WARN_ON(ksmbd_conn_good(work));
263
264 rsp->StructureSize = cpu_to_le16(65);
265 ksmbd_debug(SMB, "conn->dialect 0x%x\n", conn->dialect);
266 rsp->DialectRevision = cpu_to_le16(conn->dialect);
267 /* Not setting conn guid rsp->ServerGUID, as it
268 * not used by client for identifying connection
269 */
270 rsp->Capabilities = cpu_to_le32(conn->vals->capabilities);
271 /* Default Max Message Size till SMB2.0, 64K*/
272 rsp->MaxTransactSize = cpu_to_le32(conn->vals->max_trans_size);
273 rsp->MaxReadSize = cpu_to_le32(conn->vals->max_read_size);
274 rsp->MaxWriteSize = cpu_to_le32(conn->vals->max_write_size);
275
276 rsp->SystemTime = cpu_to_le64(ksmbd_systime());
277 rsp->ServerStartTime = 0;
278
279 rsp->SecurityBufferOffset = cpu_to_le16(128);
280 rsp->SecurityBufferLength = cpu_to_le16(AUTH_GSS_LENGTH);
281 ksmbd_copy_gss_neg_header(((char *)(&rsp->hdr) +
282 sizeof(rsp->hdr.smb2_buf_length)) +
283 le16_to_cpu(rsp->SecurityBufferOffset));
284 inc_rfc1001_len(rsp, sizeof(struct smb2_negotiate_rsp) -
285 sizeof(struct smb2_hdr) - sizeof(rsp->Buffer) +
286 AUTH_GSS_LENGTH);
287 rsp->SecurityMode = SMB2_NEGOTIATE_SIGNING_ENABLED_LE;
288 if (server_conf.signing == KSMBD_CONFIG_OPT_MANDATORY)
289 rsp->SecurityMode |= SMB2_NEGOTIATE_SIGNING_REQUIRED_LE;
290 conn->use_spnego = true;
291
292 ksmbd_conn_set_need_negotiate(work);
293 return 0;
294}
295
296static int smb2_consume_credit_charge(struct ksmbd_work *work,
070fb21e 297 unsigned short credit_charge)
e2f34481
NJ		 298{
299 struct ksmbd_conn *conn = work->conn;
300 unsigned int rsp_credits = 1;
301
302 if (!conn->total_credits)
303 return 0;
304
305 if (credit_charge > 0)
306 rsp_credits = credit_charge;
307
308 conn->total_credits -= rsp_credits;
309 return rsp_credits;
310}
311
312/**
313 * smb2_set_rsp_credits() - set number of credits in response buffer
314 * @work: smb work containing smb response buffer
315 */
316int smb2_set_rsp_credits(struct ksmbd_work *work)
317{
318 struct smb2_hdr *req_hdr = REQUEST_BUF_NEXT(work);
319 struct smb2_hdr *hdr = RESPONSE_BUF_NEXT(work);
320 struct ksmbd_conn *conn = work->conn;
321 unsigned short credits_requested = le16_to_cpu(req_hdr->CreditRequest);
322 unsigned short credit_charge = 1, credits_granted = 0;
323 unsigned short aux_max, aux_credits, min_credits;
324 int rsp_credit_charge;
325
326 if (hdr->Command == SMB2_CANCEL)
327 goto out;
328
329 /* get default minimum credits by shifting maximum credits by 4 */
330 min_credits = conn->max_credits >> 4;
331
332 if (conn->total_credits >= conn->max_credits) {
bde1694a 333 pr_err("Total credits overflow: %d\n", conn->total_credits);
e2f34481
NJ		 334 conn->total_credits = min_credits;
335 }
336
070fb21e
NJ		 337 rsp_credit_charge =
338 smb2_consume_credit_charge(work, le16_to_cpu(req_hdr->CreditCharge));
e2f34481
NJ		 339 if (rsp_credit_charge < 0)
340 return -EINVAL;
341
342 hdr->CreditCharge = cpu_to_le16(rsp_credit_charge);
343
344 if (credits_requested > 0) {
345 aux_credits = credits_requested - 1;
346 aux_max = 32;
347 if (hdr->Command == SMB2_NEGOTIATE)
348 aux_max = 0;
349 aux_credits = (aux_credits < aux_max) ? aux_credits : aux_max;
350 credits_granted = aux_credits + credit_charge;
351
352 /* if credits granted per client is getting bigger than default
353 * minimum credits then we should wrap it up within the limits.
354 */
355 if ((conn->total_credits + credits_granted) > min_credits)
356 credits_granted = min_credits - conn->total_credits;
357 /*
358 * TODO: Need to adjuct CreditRequest value according to
359 * current cpu load
360 */
361 } else if (conn->total_credits == 0) {
362 credits_granted = 1;
363 }
364
365 conn->total_credits += credits_granted;
366 work->credits_granted += credits_granted;
367
368 if (!req_hdr->NextCommand) {
369 /* Update CreditRequest in last request */
370 hdr->CreditRequest = cpu_to_le16(work->credits_granted);
371 }
372out:
373 ksmbd_debug(SMB,
070fb21e
NJ		 374 "credits: requested[%d] granted[%d] total_granted[%d]\n",
375 credits_requested, credits_granted,
376 conn->total_credits);
e2f34481
NJ		 377 return 0;
378}
379
380/**
381 * init_chained_smb2_rsp() - initialize smb2 chained response
382 * @work: smb work containing smb response buffer
383 */
384static void init_chained_smb2_rsp(struct ksmbd_work *work)
385{
386 struct smb2_hdr *req = REQUEST_BUF_NEXT(work);
387 struct smb2_hdr *rsp = RESPONSE_BUF_NEXT(work);
388 struct smb2_hdr *rsp_hdr;
389 struct smb2_hdr *rcv_hdr;
390 int next_hdr_offset = 0;
391 int len, new_len;
392
393 /* Len of this response = updated RFC len - offset of previous cmd
394 * in the compound rsp
395 */
396
397 /* Storing the current local FID which may be needed by subsequent
398 * command in the compound request
399 */
400 if (req->Command == SMB2_CREATE && rsp->Status == STATUS_SUCCESS) {
401 work->compound_fid =
402 le64_to_cpu(((struct smb2_create_rsp *)rsp)->
403 VolatileFileId);
404 work->compound_pfid =
405 le64_to_cpu(((struct smb2_create_rsp *)rsp)->
406 PersistentFileId);
407 work->compound_sid = le64_to_cpu(rsp->SessionId);
408 }
409
e5066499 410 len = get_rfc1002_len(work->response_buf) - work->next_smb2_rsp_hdr_off;
e2f34481
NJ		 411 next_hdr_offset = le32_to_cpu(req->NextCommand);
412
413 new_len = ALIGN(len, 8);
e5066499 414 inc_rfc1001_len(work->response_buf, ((sizeof(struct smb2_hdr) - 4)
e2f34481
NJ		 415 + new_len - len));
416 rsp->NextCommand = cpu_to_le32(new_len);
417
418 work->next_smb2_rcv_hdr_off += next_hdr_offset;
419 work->next_smb2_rsp_hdr_off += new_len;
420 ksmbd_debug(SMB,
070fb21e
NJ		 421 "Compound req new_len = %d rcv off = %d rsp off = %d\n",
422 new_len, work->next_smb2_rcv_hdr_off,
423 work->next_smb2_rsp_hdr_off);
e2f34481
NJ		 424
425 rsp_hdr = RESPONSE_BUF_NEXT(work);
426 rcv_hdr = REQUEST_BUF_NEXT(work);
427
428 if (!(rcv_hdr->Flags & SMB2_FLAGS_RELATED_OPERATIONS)) {
429 ksmbd_debug(SMB, "related flag should be set\n");
430 work->compound_fid = KSMBD_NO_FID;
431 work->compound_pfid = KSMBD_NO_FID;
432 }
433 memset((char *)rsp_hdr + 4, 0, sizeof(struct smb2_hdr) + 2);
434 rsp_hdr->ProtocolId = rcv_hdr->ProtocolId;
435 rsp_hdr->StructureSize = SMB2_HEADER_STRUCTURE_SIZE;
436 rsp_hdr->Command = rcv_hdr->Command;
437
438 /*
439 * Message is response. We don't grant oplock yet.
440 */
441 rsp_hdr->Flags = (SMB2_FLAGS_SERVER_TO_REDIR |
442 SMB2_FLAGS_RELATED_OPERATIONS);
443 rsp_hdr->NextCommand = 0;
444 rsp_hdr->MessageId = rcv_hdr->MessageId;
445 rsp_hdr->Id.SyncId.ProcessId = rcv_hdr->Id.SyncId.ProcessId;
446 rsp_hdr->Id.SyncId.TreeId = rcv_hdr->Id.SyncId.TreeId;
447 rsp_hdr->SessionId = rcv_hdr->SessionId;
448 memcpy(rsp_hdr->Signature, rcv_hdr->Signature, 16);
449}
450
451/**
452 * is_chained_smb2_message() - check for chained command
453 * @work: smb work containing smb request buffer
454 *
455 * Return: true if chained request, otherwise false
456 */
457bool is_chained_smb2_message(struct ksmbd_work *work)
458{
e5066499 459 struct smb2_hdr *hdr = work->request_buf;
e2f34481
NJ		 460 unsigned int len;
461
462 if (hdr->ProtocolId != SMB2_PROTO_NUMBER)
463 return false;
464
465 hdr = REQUEST_BUF_NEXT(work);
466 if (le32_to_cpu(hdr->NextCommand) > 0) {
467 ksmbd_debug(SMB, "got SMB2 chained command\n");
468 init_chained_smb2_rsp(work);
469 return true;
470 } else if (work->next_smb2_rcv_hdr_off) {
471 /*
472 * This is last request in chained command,
473 * align response to 8 byte
474 */
e5066499
NJ		 475 len = ALIGN(get_rfc1002_len(work->response_buf), 8);
476 len = len - get_rfc1002_len(work->response_buf);
e2f34481
NJ		 477 if (len) {
478 ksmbd_debug(SMB, "padding len %u\n", len);
e5066499
NJ		 479 inc_rfc1001_len(work->response_buf, len);
480 if (work->aux_payload_sz)
e2f34481
NJ		 481 work->aux_payload_sz += len;
482 }
483 }
484 return false;
485}
486
487/**
488 * init_smb2_rsp_hdr() - initialize smb2 response
489 * @work: smb work containing smb request buffer
490 *
491 * Return: 0
492 */
493int init_smb2_rsp_hdr(struct ksmbd_work *work)
494{
e5066499
NJ		 495 struct smb2_hdr *rsp_hdr = work->response_buf;
496 struct smb2_hdr *rcv_hdr = work->request_buf;
e2f34481
NJ		 497 struct ksmbd_conn *conn = work->conn;
498
499 memset(rsp_hdr, 0, sizeof(struct smb2_hdr) + 2);
500 rsp_hdr->smb2_buf_length = cpu_to_be32(HEADER_SIZE_NO_BUF_LEN(conn));
501 rsp_hdr->ProtocolId = rcv_hdr->ProtocolId;
502 rsp_hdr->StructureSize = SMB2_HEADER_STRUCTURE_SIZE;
503 rsp_hdr->Command = rcv_hdr->Command;
504
505 /*
506 * Message is response. We don't grant oplock yet.
507 */
508 rsp_hdr->Flags = (SMB2_FLAGS_SERVER_TO_REDIR);
509 rsp_hdr->NextCommand = 0;
510 rsp_hdr->MessageId = rcv_hdr->MessageId;
511 rsp_hdr->Id.SyncId.ProcessId = rcv_hdr->Id.SyncId.ProcessId;
512 rsp_hdr->Id.SyncId.TreeId = rcv_hdr->Id.SyncId.TreeId;
513 rsp_hdr->SessionId = rcv_hdr->SessionId;
514 memcpy(rsp_hdr->Signature, rcv_hdr->Signature, 16);
515
516 work->syncronous = true;
517 if (work->async_id) {
d40012a8 518 ksmbd_release_id(&conn->async_ida, work->async_id);
e2f34481
NJ		 519 work->async_id = 0;
520 }
521
522 return 0;
523}
524
525/**
526 * smb2_allocate_rsp_buf() - allocate smb2 response buffer
527 * @work: smb work containing smb request buffer
528 *
529 * Return: 0 on success, otherwise -ENOMEM
530 */
531int smb2_allocate_rsp_buf(struct ksmbd_work *work)
532{
e5066499 533 struct smb2_hdr *hdr = work->request_buf;
e2f34481
NJ		 534 size_t small_sz = MAX_CIFS_SMALL_BUFFER_SIZE;
535 size_t large_sz = work->conn->vals->max_trans_size + MAX_SMB2_HDR_SIZE;
536 size_t sz = small_sz;
537 int cmd = le16_to_cpu(hdr->Command);
538
c30f4eb8 539 if (cmd == SMB2_IOCTL_HE || cmd == SMB2_QUERY_DIRECTORY_HE)
e2f34481 540 sz = large_sz;
e2f34481
NJ		 541
542 if (cmd == SMB2_QUERY_INFO_HE) {
543 struct smb2_query_info_req *req;
544
e5066499 545 req = work->request_buf;
e2f34481 546 if (req->InfoType == SMB2_O_INFO_FILE &&
64b39f4a 547 (req->FileInfoClass == FILE_FULL_EA_INFORMATION ||
c30f4eb8 548 req->FileInfoClass == FILE_ALL_INFORMATION))
e2f34481 549 sz = large_sz;
e2f34481
NJ		 550 }
551
552 /* allocate large response buf for chained commands */
553 if (le32_to_cpu(hdr->NextCommand) > 0)
554 sz = large_sz;
555
c30f4eb8 556 work->response_buf = kvmalloc(sz, GFP_KERNEL | __GFP_ZERO);
63c454f8 557 if (!work->response_buf)
e2f34481 558 return -ENOMEM;
e2f34481
NJ		 559
560 work->response_sz = sz;
561 return 0;
562}
563
564/**
565 * smb2_check_user_session() - check for valid session for a user
566 * @work: smb work containing smb request buffer
567 *
568 * Return: 0 on success, otherwise error
569 */
570int smb2_check_user_session(struct ksmbd_work *work)
571{
e5066499 572 struct smb2_hdr *req_hdr = work->request_buf;
e2f34481
NJ		 573 struct ksmbd_conn *conn = work->conn;
574 unsigned int cmd = conn->ops->get_cmd_val(work);
575 unsigned long long sess_id;
576
577 work->sess = NULL;
578 /*
579 * SMB2_ECHO, SMB2_NEGOTIATE, SMB2_SESSION_SETUP command do not
580 * require a session id, so no need to validate user session's for
581 * these commands.
582 */
583 if (cmd == SMB2_ECHO_HE || cmd == SMB2_NEGOTIATE_HE ||
64b39f4a 584 cmd == SMB2_SESSION_SETUP_HE)
e2f34481
NJ		 585 return 0;
586
587 if (!ksmbd_conn_good(work))
588 return -EINVAL;
589
590 sess_id = le64_to_cpu(req_hdr->SessionId);
591 /* Check for validity of user session */
f5a544e3 592 work->sess = ksmbd_session_lookup_all(conn, sess_id);
e2f34481
NJ		 593 if (work->sess)
594 return 1;
595 ksmbd_debug(SMB, "Invalid user session, Uid %llu\n", sess_id);
596 return -EINVAL;
597}
598
64b39f4a 599static void destroy_previous_session(struct ksmbd_user *user, u64 id)
e2f34481
NJ		 600{
601 struct ksmbd_session *prev_sess = ksmbd_session_lookup_slowpath(id);
602 struct ksmbd_user *prev_user;
603
604 if (!prev_sess)
605 return;
606
607 prev_user = prev_sess->user;
608
1fca8038
MM		 609 if (!prev_user ||
610 strcmp(user->name, prev_user->name) ||
e2f34481
NJ		 611 user->passkey_sz != prev_user->passkey_sz ||
612 memcmp(user->passkey, prev_user->passkey, user->passkey_sz)) {
613 put_session(prev_sess);
614 return;
615 }
616
617 put_session(prev_sess);
618 ksmbd_session_destroy(prev_sess);
619}
620
621/**
622 * smb2_get_name() - get filename string from on the wire smb format
95fa1ce9 623 * @share: ksmbd_share_config pointer
e2f34481
NJ		 624 * @src: source buffer
625 * @maxlen: maxlen of source string
95fa1ce9 626 * @nls_table: nls_table pointer
e2f34481
NJ		 627 *
628 * Return: matching converted filename on success, otherwise error ptr
629 */
630static char *
64b39f4a 631smb2_get_name(struct ksmbd_share_config *share, const char *src,
070fb21e 632 const int maxlen, struct nls_table *local_nls)
e2f34481
NJ		 633{
634 char *name, *unixname;
635
64b39f4a 636 name = smb_strndup_from_utf16(src, maxlen, 1, local_nls);
e2f34481 637 if (IS_ERR(name)) {
bde1694a 638 pr_err("failed to get name %ld\n", PTR_ERR(name));
e2f34481
NJ		 639 return name;
640 }
641
642 /* change it to absolute unix name */
643 ksmbd_conv_path_to_unix(name);
644 ksmbd_strip_last_slash(name);
645
646 unixname = convert_to_unix_name(share, name);
647 kfree(name);
648 if (!unixname) {
bde1694a 649 pr_err("can not convert absolute name\n");
e2f34481
NJ		 650 return ERR_PTR(-ENOMEM);
651 }
652
653 ksmbd_debug(SMB, "absolute name = %s\n", unixname);
654 return unixname;
655}
656
e2f34481
NJ		 657int setup_async_work(struct ksmbd_work *work, void (*fn)(void **), void **arg)
658{
659 struct smb2_hdr *rsp_hdr;
660 struct ksmbd_conn *conn = work->conn;
661 int id;
662
e5066499 663 rsp_hdr = work->response_buf;
e2f34481
NJ		 664 rsp_hdr->Flags |= SMB2_FLAGS_ASYNC_COMMAND;
665
d40012a8 666 id = ksmbd_acquire_async_msg_id(&conn->async_ida);
e2f34481 667 if (id < 0) {
bde1694a 668 pr_err("Failed to alloc async message id\n");
e2f34481
NJ		 669 return id;
670 }
671 work->syncronous = false;
672 work->async_id = id;
673 rsp_hdr->Id.AsyncId = cpu_to_le64(id);
674
675 ksmbd_debug(SMB,
070fb21e
NJ		 676 "Send interim Response to inform async request id : %d\n",
677 work->async_id);
e2f34481
NJ		 678
679 work->cancel_fn = fn;
680 work->cancel_argv = arg;
681
6c4e675a
NJ		 682 if (list_empty(&work->async_request_entry)) {
683 spin_lock(&conn->request_lock);
684 list_add_tail(&work->async_request_entry, &conn->async_requests);
685 spin_unlock(&conn->request_lock);
686 }
e2f34481
NJ		 687
688 return 0;
689}
690
691void smb2_send_interim_resp(struct ksmbd_work *work, __le32 status)
692{
693 struct smb2_hdr *rsp_hdr;
694
e5066499 695 rsp_hdr = work->response_buf;
e2f34481
NJ		 696 smb2_set_err_rsp(work);
697 rsp_hdr->Status = status;
698
699 work->multiRsp = 1;
700 ksmbd_conn_write(work);
701 rsp_hdr->Status = 0;
702 work->multiRsp = 0;
703}
704
705static __le32 smb2_get_reparse_tag_special_file(umode_t mode)
706{
707 if (S_ISDIR(mode) || S_ISREG(mode))
708 return 0;
709
710 if (S_ISLNK(mode))
711 return IO_REPARSE_TAG_LX_SYMLINK_LE;
712 else if (S_ISFIFO(mode))
713 return IO_REPARSE_TAG_LX_FIFO_LE;
714 else if (S_ISSOCK(mode))
715 return IO_REPARSE_TAG_AF_UNIX_LE;
716 else if (S_ISCHR(mode))
717 return IO_REPARSE_TAG_LX_CHR_LE;
718 else if (S_ISBLK(mode))
719 return IO_REPARSE_TAG_LX_BLK_LE;
720
721 return 0;
722}
723
724/**
725 * smb2_get_dos_mode() - get file mode in dos format from unix mode
726 * @stat: kstat containing file mode
95fa1ce9 727 * @attribute: attribute flags
e2f34481
NJ		 728 *
729 * Return: converted dos mode
730 */
731static int smb2_get_dos_mode(struct kstat *stat, int attribute)
732{
733 int attr = 0;
734
64b39f4a 735 if (S_ISDIR(stat->mode)) {
e2f34481
NJ		 736 attr = ATTR_DIRECTORY |
737 (attribute & (ATTR_HIDDEN | ATTR_SYSTEM));
64b39f4a 738 } else {
e2f34481
NJ		 739 attr = (attribute & 0x00005137) | ATTR_ARCHIVE;
740 attr &= ~(ATTR_DIRECTORY);
741 if (S_ISREG(stat->mode) && (server_conf.share_fake_fscaps &
742 FILE_SUPPORTS_SPARSE_FILES))
743 attr |= ATTR_SPARSE;
744
745 if (smb2_get_reparse_tag_special_file(stat->mode))
746 attr |= ATTR_REPARSE;
747 }
748
749 return attr;
750}
751
752static void build_preauth_ctxt(struct smb2_preauth_neg_context *pneg_ctxt,
070fb21e 753 __le16 hash_id)
e2f34481
NJ		 754{
755 pneg_ctxt->ContextType = SMB2_PREAUTH_INTEGRITY_CAPABILITIES;
756 pneg_ctxt->DataLength = cpu_to_le16(38);
757 pneg_ctxt->HashAlgorithmCount = cpu_to_le16(1);
758 pneg_ctxt->Reserved = cpu_to_le32(0);
759 pneg_ctxt->SaltLength = cpu_to_le16(SMB311_SALT_SIZE);
760 get_random_bytes(pneg_ctxt->Salt, SMB311_SALT_SIZE);
761 pneg_ctxt->HashAlgorithms = hash_id;
762}
763
764static void build_encrypt_ctxt(struct smb2_encryption_neg_context *pneg_ctxt,
070fb21e 765 __le16 cipher_type)
e2f34481
NJ		 766{
767 pneg_ctxt->ContextType = SMB2_ENCRYPTION_CAPABILITIES;
768 pneg_ctxt->DataLength = cpu_to_le16(4);
769 pneg_ctxt->Reserved = cpu_to_le32(0);
770 pneg_ctxt->CipherCount = cpu_to_le16(1);
771 pneg_ctxt->Ciphers[0] = cipher_type;
772}
773
774static void build_compression_ctxt(struct smb2_compression_ctx *pneg_ctxt,
070fb21e 775 __le16 comp_algo)
e2f34481
NJ		 776{
777 pneg_ctxt->ContextType = SMB2_COMPRESSION_CAPABILITIES;
778 pneg_ctxt->DataLength =
779 cpu_to_le16(sizeof(struct smb2_compression_ctx)
780 - sizeof(struct smb2_neg_context));
781 pneg_ctxt->Reserved = cpu_to_le32(0);
782 pneg_ctxt->CompressionAlgorithmCount = cpu_to_le16(1);
783 pneg_ctxt->Reserved1 = cpu_to_le32(0);
784 pneg_ctxt->CompressionAlgorithms[0] = comp_algo;
785}
786
64b39f4a 787static void build_posix_ctxt(struct smb2_posix_neg_context *pneg_ctxt)
e2f34481
NJ		 788{
789 pneg_ctxt->ContextType = SMB2_POSIX_EXTENSIONS_AVAILABLE;
790 pneg_ctxt->DataLength = cpu_to_le16(POSIX_CTXT_DATA_LEN);
791 /* SMB2_CREATE_TAG_POSIX is "0x93AD25509CB411E7B42383DE968BCD7C" */
792 pneg_ctxt->Name[0] = 0x93;
793 pneg_ctxt->Name[1] = 0xAD;
794 pneg_ctxt->Name[2] = 0x25;
795 pneg_ctxt->Name[3] = 0x50;
796 pneg_ctxt->Name[4] = 0x9C;
797 pneg_ctxt->Name[5] = 0xB4;
798 pneg_ctxt->Name[6] = 0x11;
799 pneg_ctxt->Name[7] = 0xE7;
800 pneg_ctxt->Name[8] = 0xB4;
801 pneg_ctxt->Name[9] = 0x23;
802 pneg_ctxt->Name[10] = 0x83;
803 pneg_ctxt->Name[11] = 0xDE;
804 pneg_ctxt->Name[12] = 0x96;
805 pneg_ctxt->Name[13] = 0x8B;
806 pneg_ctxt->Name[14] = 0xCD;
807 pneg_ctxt->Name[15] = 0x7C;
808}
809
64b39f4a 810static void assemble_neg_contexts(struct ksmbd_conn *conn,
070fb21e 811 struct smb2_negotiate_rsp *rsp)
e2f34481
NJ		 812{
813 /* +4 is to account for the RFC1001 len field */
814 char *pneg_ctxt = (char *)rsp +
815 le32_to_cpu(rsp->NegotiateContextOffset) + 4;
816 int neg_ctxt_cnt = 1;
817 int ctxt_size;
818
819 ksmbd_debug(SMB,
070fb21e 820 "assemble SMB2_PREAUTH_INTEGRITY_CAPABILITIES context\n");
e2f34481 821 build_preauth_ctxt((struct smb2_preauth_neg_context *)pneg_ctxt,
070fb21e 822 conn->preauth_info->Preauth_HashId);
e2f34481
NJ		 823 rsp->NegotiateContextCount = cpu_to_le16(neg_ctxt_cnt);
824 inc_rfc1001_len(rsp, AUTH_GSS_PADDING);
825 ctxt_size = sizeof(struct smb2_preauth_neg_context);
826 /* Round to 8 byte boundary */
827 pneg_ctxt += round_up(sizeof(struct smb2_preauth_neg_context), 8);
828
829 if (conn->cipher_type) {
830 ctxt_size = round_up(ctxt_size, 8);
831 ksmbd_debug(SMB,
070fb21e 832 "assemble SMB2_ENCRYPTION_CAPABILITIES context\n");
64b39f4a 833 build_encrypt_ctxt((struct smb2_encryption_neg_context *)pneg_ctxt,
070fb21e 834 conn->cipher_type);
e2f34481
NJ		 835 rsp->NegotiateContextCount = cpu_to_le16(++neg_ctxt_cnt);
836 ctxt_size += sizeof(struct smb2_encryption_neg_context);
837 /* Round to 8 byte boundary */
838 pneg_ctxt +=
839 round_up(sizeof(struct smb2_encryption_neg_context),
840 8);
841 }
842
843 if (conn->compress_algorithm) {
844 ctxt_size = round_up(ctxt_size, 8);
845 ksmbd_debug(SMB,
070fb21e 846 "assemble SMB2_COMPRESSION_CAPABILITIES context\n");
e2f34481
NJ		 847 /* Temporarily set to SMB3_COMPRESS_NONE */
848 build_compression_ctxt((struct smb2_compression_ctx *)pneg_ctxt,
070fb21e 849 conn->compress_algorithm);
e2f34481
NJ		 850 rsp->NegotiateContextCount = cpu_to_le16(++neg_ctxt_cnt);
851 ctxt_size += sizeof(struct smb2_compression_ctx);
852 /* Round to 8 byte boundary */
853 pneg_ctxt += round_up(sizeof(struct smb2_compression_ctx), 8);
854 }
855
856 if (conn->posix_ext_supported) {
857 ctxt_size = round_up(ctxt_size, 8);
858 ksmbd_debug(SMB,
070fb21e 859 "assemble SMB2_POSIX_EXTENSIONS_AVAILABLE context\n");
e2f34481
NJ		 860 build_posix_ctxt((struct smb2_posix_neg_context *)pneg_ctxt);
861 rsp->NegotiateContextCount = cpu_to_le16(++neg_ctxt_cnt);
862 ctxt_size += sizeof(struct smb2_posix_neg_context);
863 }
864
865 inc_rfc1001_len(rsp, ctxt_size);
866}
867
64b39f4a 868static __le32 decode_preauth_ctxt(struct ksmbd_conn *conn,
070fb21e 869 struct smb2_preauth_neg_context *pneg_ctxt)
e2f34481
NJ		 870{
871 __le32 err = STATUS_NO_PREAUTH_INTEGRITY_HASH_OVERLAP;
872
070fb21e 873 if (pneg_ctxt->HashAlgorithms == SMB2_PREAUTH_INTEGRITY_SHA512) {
e2f34481
NJ		 874 conn->preauth_info->Preauth_HashId =
875 SMB2_PREAUTH_INTEGRITY_SHA512;
876 err = STATUS_SUCCESS;
877 }
878
879 return err;
880}
881
882static int decode_encrypt_ctxt(struct ksmbd_conn *conn,
070fb21e 883 struct smb2_encryption_neg_context *pneg_ctxt)
e2f34481
NJ		 884{
885 int i;
886 int cph_cnt = le16_to_cpu(pneg_ctxt->CipherCount);
887
888 conn->cipher_type = 0;
889
890 if (!(server_conf.flags & KSMBD_GLOBAL_FLAG_SMB2_ENCRYPTION))
891 goto out;
892
893 for (i = 0; i < cph_cnt; i++) {
894 if (pneg_ctxt->Ciphers[i] == SMB2_ENCRYPTION_AES128_GCM ||
5a0ca770
NJ		 895 pneg_ctxt->Ciphers[i] == SMB2_ENCRYPTION_AES128_CCM ||
896 pneg_ctxt->Ciphers[i] == SMB2_ENCRYPTION_AES256_CCM ||
897 pneg_ctxt->Ciphers[i] == SMB2_ENCRYPTION_AES256_GCM) {
e2f34481 898 ksmbd_debug(SMB, "Cipher ID = 0x%x\n",
070fb21e 899 pneg_ctxt->Ciphers[i]);
e2f34481
NJ		 900 conn->cipher_type = pneg_ctxt->Ciphers[i];
901 break;
902 }
903 }
904
905out:
906 /*
907 * Return encrypt context size in request.
908 * So need to plus extra number of ciphers size.
909 */
910 return sizeof(struct smb2_encryption_neg_context) +
911 ((cph_cnt - 1) * 2);
912}
913
914static int decode_compress_ctxt(struct ksmbd_conn *conn,
070fb21e 915 struct smb2_compression_ctx *pneg_ctxt)
e2f34481
NJ		 916{
917 int algo_cnt = le16_to_cpu(pneg_ctxt->CompressionAlgorithmCount);
918
919 conn->compress_algorithm = SMB3_COMPRESS_NONE;
920
921 /*
922 * Return compression context size in request.
923 * So need to plus extra number of CompressionAlgorithms size.
924 */
925 return sizeof(struct smb2_encryption_neg_context) +
926 ((algo_cnt - 1) * 2);
927}
928
929static __le32 deassemble_neg_contexts(struct ksmbd_conn *conn,
070fb21e 930 struct smb2_negotiate_req *req)
e2f34481
NJ		 931{
932 int i = 0;
933 __le32 status = 0;
934 /* +4 is to account for the RFC1001 len field */
935 char *pneg_ctxt = (char *)req +
936 le32_to_cpu(req->NegotiateContextOffset) + 4;
937 __le16 *ContextType = (__le16 *)pneg_ctxt;
938 int neg_ctxt_cnt = le16_to_cpu(req->NegotiateContextCount);
939 int ctxt_size;
940
941 ksmbd_debug(SMB, "negotiate context count = %d\n", neg_ctxt_cnt);
942 status = STATUS_INVALID_PARAMETER;
943 while (i++ < neg_ctxt_cnt) {
944 if (*ContextType == SMB2_PREAUTH_INTEGRITY_CAPABILITIES) {
945 ksmbd_debug(SMB,
070fb21e 946 "deassemble SMB2_PREAUTH_INTEGRITY_CAPABILITIES context\n");
e2f34481
NJ		 947 if (conn->preauth_info->Preauth_HashId)
948 break;
949
950 status = decode_preauth_ctxt(conn,
070fb21e 951 (struct smb2_preauth_neg_context *)pneg_ctxt);
64b39f4a 952 pneg_ctxt += DIV_ROUND_UP(sizeof(struct smb2_preauth_neg_context), 8) * 8;
e2f34481
NJ		 953 } else if (*ContextType == SMB2_ENCRYPTION_CAPABILITIES) {
954 ksmbd_debug(SMB,
070fb21e 955 "deassemble SMB2_ENCRYPTION_CAPABILITIES context\n");
e2f34481
NJ		 956 if (conn->cipher_type)
957 break;
958
959 ctxt_size = decode_encrypt_ctxt(conn,
64b39f4a 960 (struct smb2_encryption_neg_context *)pneg_ctxt);
e2f34481
NJ		 961 pneg_ctxt += DIV_ROUND_UP(ctxt_size, 8) * 8;
962 } else if (*ContextType == SMB2_COMPRESSION_CAPABILITIES) {
963 ksmbd_debug(SMB,
070fb21e 964 "deassemble SMB2_COMPRESSION_CAPABILITIES context\n");
e2f34481
NJ		 965 if (conn->compress_algorithm)
966 break;
967
968 ctxt_size = decode_compress_ctxt(conn,
10268f7d 969 (struct smb2_compression_ctx *)pneg_ctxt);
e2f34481
NJ		 970 pneg_ctxt += DIV_ROUND_UP(ctxt_size, 8) * 8;
971 } else if (*ContextType == SMB2_NETNAME_NEGOTIATE_CONTEXT_ID) {
972 ksmbd_debug(SMB,
070fb21e 973 "deassemble SMB2_NETNAME_NEGOTIATE_CONTEXT_ID context\n");
e2f34481 974 ctxt_size = sizeof(struct smb2_netname_neg_context);
64b39f4a 975 ctxt_size += DIV_ROUND_UP(le16_to_cpu(((struct smb2_netname_neg_context *)
070fb21e 976 pneg_ctxt)->DataLength), 8) * 8;
e2f34481
NJ		 977 pneg_ctxt += ctxt_size;
978 } else if (*ContextType == SMB2_POSIX_EXTENSIONS_AVAILABLE) {
979 ksmbd_debug(SMB,
070fb21e 980 "deassemble SMB2_POSIX_EXTENSIONS_AVAILABLE context\n");
e2f34481 981 conn->posix_ext_supported = true;
64b39f4a 982 pneg_ctxt += DIV_ROUND_UP(sizeof(struct smb2_posix_neg_context), 8) * 8;
e2f34481
NJ		 983 }
984 ContextType = (__le16 *)pneg_ctxt;
985
986 if (status != STATUS_SUCCESS)
987 break;
988 }
989 return status;
990}
991
992/**
993 * smb2_handle_negotiate() - handler for smb2 negotiate command
994 * @work: smb work containing smb request buffer
995 *
996 * Return: 0
997 */
998int smb2_handle_negotiate(struct ksmbd_work *work)
999{
1000 struct ksmbd_conn *conn = work->conn;
e5066499
NJ		 1001 struct smb2_negotiate_req *req = work->request_buf;
1002 struct smb2_negotiate_rsp *rsp = work->response_buf;
e2f34481
NJ		 1003 int rc = 0;
1004 __le32 status;
1005
1006 ksmbd_debug(SMB, "Received negotiate request\n");
1007 conn->need_neg = false;
1008 if (ksmbd_conn_good(work)) {
bde1694a 1009 pr_err("conn->tcp_status is already in CifsGood State\n");
e2f34481
NJ		 1010 work->send_no_response = 1;
1011 return rc;
1012 }
1013
1014 if (req->DialectCount == 0) {
bde1694a 1015 pr_err("malformed packet\n");
e2f34481
NJ		 1016 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
1017 rc = -EINVAL;
1018 goto err_out;
1019 }
1020
1021 conn->cli_cap = le32_to_cpu(req->Capabilities);
1022 switch (conn->dialect) {
1023 case SMB311_PROT_ID:
1024 conn->preauth_info =
1025 kzalloc(sizeof(struct preauth_integrity_info),
070fb21e 1026 GFP_KERNEL);
e2f34481
NJ		 1027 if (!conn->preauth_info) {
1028 rc = -ENOMEM;
1029 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
1030 goto err_out;
1031 }
1032
1033 status = deassemble_neg_contexts(conn, req);
1034 if (status != STATUS_SUCCESS) {
bde1694a
NJ		 1035 pr_err("deassemble_neg_contexts error(0x%x)\n",
1036 status);
e2f34481
NJ		 1037 rsp->hdr.Status = status;
1038 rc = -EINVAL;
1039 goto err_out;
1040 }
1041
1042 rc = init_smb3_11_server(conn);
1043 if (rc < 0) {
1044 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
1045 goto err_out;
1046 }
1047
1048 ksmbd_gen_preauth_integrity_hash(conn,
070fb21e
NJ		 1049 work->request_buf,
1050 conn->preauth_info->Preauth_HashValue);
e2f34481
NJ		 1051 rsp->NegotiateContextOffset =
1052 cpu_to_le32(OFFSET_OF_NEG_CONTEXT);
1053 assemble_neg_contexts(conn, rsp);
1054 break;
1055 case SMB302_PROT_ID:
1056 init_smb3_02_server(conn);
1057 break;
1058 case SMB30_PROT_ID:
1059 init_smb3_0_server(conn);
1060 break;
1061 case SMB21_PROT_ID:
1062 init_smb2_1_server(conn);
1063 break;
1064 case SMB20_PROT_ID:
1065 rc = init_smb2_0_server(conn);
1066 if (rc) {
1067 rsp->hdr.Status = STATUS_NOT_SUPPORTED;
1068 goto err_out;
1069 }
1070 break;
1071 case SMB2X_PROT_ID:
1072 case BAD_PROT_ID:
1073 default:
1074 ksmbd_debug(SMB, "Server dialect :0x%x not supported\n",
070fb21e 1075 conn->dialect);
e2f34481
NJ		 1076 rsp->hdr.Status = STATUS_NOT_SUPPORTED;
1077 rc = -EINVAL;
1078 goto err_out;
1079 }
1080 rsp->Capabilities = cpu_to_le32(conn->vals->capabilities);
1081
1082 /* For stats */
1083 conn->connection_type = conn->dialect;
1084
1085 rsp->MaxTransactSize = cpu_to_le32(conn->vals->max_trans_size);
1086 rsp->MaxReadSize = cpu_to_le32(conn->vals->max_read_size);
1087 rsp->MaxWriteSize = cpu_to_le32(conn->vals->max_write_size);
1088
1089 if (conn->dialect > SMB20_PROT_ID) {
1090 memcpy(conn->ClientGUID, req->ClientGUID,
070fb21e 1091 SMB2_CLIENT_GUID_SIZE);
e2f34481
NJ		 1092 conn->cli_sec_mode = le16_to_cpu(req->SecurityMode);
1093 }
1094
1095 rsp->StructureSize = cpu_to_le16(65);
1096 rsp->DialectRevision = cpu_to_le16(conn->dialect);
1097 /* Not setting conn guid rsp->ServerGUID, as it
1098 * not used by client for identifying server
1099 */
1100 memset(rsp->ServerGUID, 0, SMB2_CLIENT_GUID_SIZE);
1101
1102 rsp->SystemTime = cpu_to_le64(ksmbd_systime());
1103 rsp->ServerStartTime = 0;
1104 ksmbd_debug(SMB, "negotiate context offset %d, count %d\n",
070fb21e
NJ		 1105 le32_to_cpu(rsp->NegotiateContextOffset),
1106 le16_to_cpu(rsp->NegotiateContextCount));
e2f34481
NJ		 1107
1108 rsp->SecurityBufferOffset = cpu_to_le16(128);
1109 rsp->SecurityBufferLength = cpu_to_le16(AUTH_GSS_LENGTH);
1110 ksmbd_copy_gss_neg_header(((char *)(&rsp->hdr) +
070fb21e
NJ		 1111 sizeof(rsp->hdr.smb2_buf_length)) +
1112 le16_to_cpu(rsp->SecurityBufferOffset));
e2f34481 1113 inc_rfc1001_len(rsp, sizeof(struct smb2_negotiate_rsp) -
070fb21e
NJ		 1114 sizeof(struct smb2_hdr) - sizeof(rsp->Buffer) +
1115 AUTH_GSS_LENGTH);
e2f34481
NJ		 1116 rsp->SecurityMode = SMB2_NEGOTIATE_SIGNING_ENABLED_LE;
1117 conn->use_spnego = true;
1118
1119 if ((server_conf.signing == KSMBD_CONFIG_OPT_AUTO ||
64b39f4a
NJ		 1120 server_conf.signing == KSMBD_CONFIG_OPT_DISABLED) &&
1121 req->SecurityMode & SMB2_NEGOTIATE_SIGNING_REQUIRED_LE)
e2f34481
NJ		 1122 conn->sign = true;
1123 else if (server_conf.signing == KSMBD_CONFIG_OPT_MANDATORY) {
1124 server_conf.enforced_signing = true;
1125 rsp->SecurityMode |= SMB2_NEGOTIATE_SIGNING_REQUIRED_LE;
1126 conn->sign = true;
1127 }
1128
1129 conn->srv_sec_mode = le16_to_cpu(rsp->SecurityMode);
1130 ksmbd_conn_set_need_negotiate(work);
1131
1132err_out:
1133 if (rc < 0)
1134 smb2_set_err_rsp(work);
1135
1136 return rc;
1137}
1138
1139static int alloc_preauth_hash(struct ksmbd_session *sess,
070fb21e 1140 struct ksmbd_conn *conn)
e2f34481
NJ		 1141{
1142 if (sess->Preauth_HashValue)
1143 return 0;
1144
86f52978 1145 sess->Preauth_HashValue = kmemdup(conn->preauth_info->Preauth_HashValue,
070fb21e 1146 PREAUTH_HASHVALUE_SIZE, GFP_KERNEL);
e2f34481
NJ		 1147 if (!sess->Preauth_HashValue)
1148 return -ENOMEM;
1149
e2f34481
NJ		 1150 return 0;
1151}
1152
1153static int generate_preauth_hash(struct ksmbd_work *work)
1154{
1155 struct ksmbd_conn *conn = work->conn;
1156 struct ksmbd_session *sess = work->sess;
f5a544e3 1157 u8 *preauth_hash;
e2f34481
NJ		 1158
1159 if (conn->dialect != SMB311_PROT_ID)
1160 return 0;
1161
f5a544e3
NJ		 1162 if (conn->binding) {
1163 struct preauth_session *preauth_sess;
1164
1165 preauth_sess = ksmbd_preauth_session_lookup(conn, sess->id);
1166 if (!preauth_sess) {
1167 preauth_sess = ksmbd_preauth_session_alloc(conn, sess->id);
1168 if (!preauth_sess)
1169 return -ENOMEM;
1170 }
1171
1172 preauth_hash = preauth_sess->Preauth_HashValue;
1173 } else {
1174 if (!sess->Preauth_HashValue)
1175 if (alloc_preauth_hash(sess, conn))
1176 return -ENOMEM;
1177 preauth_hash = sess->Preauth_HashValue;
e2f34481
NJ		 1178 }
1179
f5a544e3 1180 ksmbd_gen_preauth_integrity_hash(conn, work->request_buf, preauth_hash);
e2f34481
NJ		 1181 return 0;
1182}
1183
1184static int decode_negotiation_token(struct ksmbd_work *work,
070fb21e 1185 struct negotiate_message *negblob)
e2f34481
NJ		 1186{
1187 struct ksmbd_conn *conn = work->conn;
1188 struct smb2_sess_setup_req *req;
1189 int sz;
1190
1191 if (!conn->use_spnego)
1192 return -EINVAL;
1193
e5066499 1194 req = work->request_buf;
e2f34481
NJ		 1195 sz = le16_to_cpu(req->SecurityBufferLength);
1196
fad4161b
HL		 1197 if (ksmbd_decode_negTokenInit((char *)negblob, sz, conn)) {
1198 if (ksmbd_decode_negTokenTarg((char *)negblob, sz, conn)) {
e2f34481
NJ		 1199 conn->auth_mechs |= KSMBD_AUTH_NTLMSSP;
1200 conn->preferred_auth_mech = KSMBD_AUTH_NTLMSSP;
1201 conn->use_spnego = false;
1202 }
1203 }
1204 return 0;
1205}
1206
1207static int ntlm_negotiate(struct ksmbd_work *work,
070fb21e 1208 struct negotiate_message *negblob)
e2f34481 1209{
e5066499
NJ		 1210 struct smb2_sess_setup_req *req = work->request_buf;
1211 struct smb2_sess_setup_rsp *rsp = work->response_buf;
e2f34481
NJ		 1212 struct challenge_message *chgblob;
1213 unsigned char *spnego_blob = NULL;
1214 u16 spnego_blob_len;
1215 char *neg_blob;
1216 int sz, rc;
1217
1218 ksmbd_debug(SMB, "negotiate phase\n");
1219 sz = le16_to_cpu(req->SecurityBufferLength);
1220 rc = ksmbd_decode_ntlmssp_neg_blob(negblob, sz, work->sess);
1221 if (rc)
1222 return rc;
1223
1224 sz = le16_to_cpu(rsp->SecurityBufferOffset);
1225 chgblob =
1226 (struct challenge_message *)((char *)&rsp->hdr.ProtocolId + sz);
1227 memset(chgblob, 0, sizeof(struct challenge_message));
1228
1229 if (!work->conn->use_spnego) {
1230 sz = ksmbd_build_ntlmssp_challenge_blob(chgblob, work->sess);
1231 if (sz < 0)
1232 return -ENOMEM;
1233
1234 rsp->SecurityBufferLength = cpu_to_le16(sz);
1235 return 0;
1236 }
1237
1238 sz = sizeof(struct challenge_message);
1239 sz += (strlen(ksmbd_netbios_name()) * 2 + 1 + 4) * 6;
1240
1241 neg_blob = kzalloc(sz, GFP_KERNEL);
1242 if (!neg_blob)
1243 return -ENOMEM;
1244
1245 chgblob = (struct challenge_message *)neg_blob;
1246 sz = ksmbd_build_ntlmssp_challenge_blob(chgblob, work->sess);
1247 if (sz < 0) {
1248 rc = -ENOMEM;
1249 goto out;
1250 }
1251
070fb21e
NJ		 1252 rc = build_spnego_ntlmssp_neg_blob(&spnego_blob, &spnego_blob_len,
1253 neg_blob, sz);
e2f34481
NJ		 1254 if (rc) {
1255 rc = -ENOMEM;
1256 goto out;
1257 }
1258
1259 sz = le16_to_cpu(rsp->SecurityBufferOffset);
1260 memcpy((char *)&rsp->hdr.ProtocolId + sz, spnego_blob, spnego_blob_len);
1261 rsp->SecurityBufferLength = cpu_to_le16(spnego_blob_len);
1262
1263out:
1264 kfree(spnego_blob);
1265 kfree(neg_blob);
1266 return rc;
1267}
1268
1269static struct authenticate_message *user_authblob(struct ksmbd_conn *conn,
070fb21e 1270 struct smb2_sess_setup_req *req)
e2f34481
NJ		 1271{
1272 int sz;
1273
1274 if (conn->use_spnego && conn->mechToken)
1275 return (struct authenticate_message *)conn->mechToken;
1276
1277 sz = le16_to_cpu(req->SecurityBufferOffset);
1278 return (struct authenticate_message *)((char *)&req->hdr.ProtocolId
1279 + sz);
1280}
1281
1282static struct ksmbd_user *session_user(struct ksmbd_conn *conn,
070fb21e 1283 struct smb2_sess_setup_req *req)
e2f34481
NJ		 1284{
1285 struct authenticate_message *authblob;
1286 struct ksmbd_user *user;
1287 char *name;
1288 int sz;
1289
1290 authblob = user_authblob(conn, req);
1291 sz = le32_to_cpu(authblob->UserName.BufferOffset);
1292 name = smb_strndup_from_utf16((const char *)authblob + sz,
1293 le16_to_cpu(authblob->UserName.Length),
1294 true,
1295 conn->local_nls);
1296 if (IS_ERR(name)) {
bde1694a 1297 pr_err("cannot allocate memory\n");
e2f34481
NJ		 1298 return NULL;
1299 }
1300
1301 ksmbd_debug(SMB, "session setup request for user %s\n", name);
1302 user = ksmbd_login_user(name);
1303 kfree(name);
1304 return user;
1305}
1306
1307static int ntlm_authenticate(struct ksmbd_work *work)
1308{
e5066499
NJ		 1309 struct smb2_sess_setup_req *req = work->request_buf;
1310 struct smb2_sess_setup_rsp *rsp = work->response_buf;
e2f34481
NJ		 1311 struct ksmbd_conn *conn = work->conn;
1312 struct ksmbd_session *sess = work->sess;
1313 struct channel *chann = NULL;
1314 struct ksmbd_user *user;
64b39f4a 1315 u64 prev_id;
e2f34481
NJ		 1316 int sz, rc;
1317
1318 ksmbd_debug(SMB, "authenticate phase\n");
1319 if (conn->use_spnego) {
1320 unsigned char *spnego_blob;
1321 u16 spnego_blob_len;
1322
1323 rc = build_spnego_ntlmssp_auth_blob(&spnego_blob,
1324 &spnego_blob_len,
1325 0);
1326 if (rc)
1327 return -ENOMEM;
1328
1329 sz = le16_to_cpu(rsp->SecurityBufferOffset);
64b39f4a 1330 memcpy((char *)&rsp->hdr.ProtocolId + sz, spnego_blob, spnego_blob_len);
e2f34481
NJ		 1331 rsp->SecurityBufferLength = cpu_to_le16(spnego_blob_len);
1332 kfree(spnego_blob);
1333 inc_rfc1001_len(rsp, spnego_blob_len - 1);
1334 }
1335
1336 user = session_user(conn, req);
1337 if (!user) {
1338 ksmbd_debug(SMB, "Unknown user name or an error\n");
1339 rsp->hdr.Status = STATUS_LOGON_FAILURE;
1340 return -EINVAL;
1341 }
1342
1343 /* Check for previous session */
1344 prev_id = le64_to_cpu(req->PreviousSessionId);
1345 if (prev_id && prev_id != sess->id)
1346 destroy_previous_session(user, prev_id);
1347
1348 if (sess->state == SMB2_SESSION_VALID) {
1349 /*
1350 * Reuse session if anonymous try to connect
1351 * on reauthetication.
1352 */
1353 if (ksmbd_anonymous_user(user)) {
1354 ksmbd_free_user(user);
1355 return 0;
1356 }
1357 ksmbd_free_user(sess->user);
1358 }
1359
1360 sess->user = user;
1361 if (user_guest(sess->user)) {
1362 if (conn->sign) {
64b39f4a 1363 ksmbd_debug(SMB, "Guest login not allowed when signing enabled\n");
e2f34481
NJ		 1364 rsp->hdr.Status = STATUS_LOGON_FAILURE;
1365 return -EACCES;
1366 }
1367
1368 rsp->SessionFlags = SMB2_SESSION_FLAG_IS_GUEST_LE;
1369 } else {
1370 struct authenticate_message *authblob;
1371
1372 authblob = user_authblob(conn, req);
1373 sz = le16_to_cpu(req->SecurityBufferLength);
1374 rc = ksmbd_decode_ntlmssp_auth_blob(authblob, sz, sess);
1375 if (rc) {
1376 set_user_flag(sess->user, KSMBD_USER_FLAG_BAD_PASSWORD);
1377 ksmbd_debug(SMB, "authentication failed\n");
1378 rsp->hdr.Status = STATUS_LOGON_FAILURE;
1379 return -EINVAL;
1380 }
1381
1382 /*
1383 * If session state is SMB2_SESSION_VALID, We can assume
1384 * that it is reauthentication. And the user/password
1385 * has been verified, so return it here.
1386 */
f5a544e3
NJ		 1387 if (sess->state == SMB2_SESSION_VALID) {
1388 if (conn->binding)
1389 goto binding_session;
e2f34481 1390 return 0;
f5a544e3 1391 }
e2f34481
NJ		 1392
1393 if ((conn->sign || server_conf.enforced_signing) ||
64b39f4a 1394 (req->SecurityMode & SMB2_NEGOTIATE_SIGNING_REQUIRED))
e2f34481
NJ		 1395 sess->sign = true;
1396
1397 if (conn->vals->capabilities & SMB2_GLOBAL_CAP_ENCRYPTION &&
f5a544e3
NJ		 1398 conn->ops->generate_encryptionkey &&
1399 !(req->Flags & SMB2_SESSION_REQ_FLAG_BINDING)) {
e2f34481
NJ		 1400 rc = conn->ops->generate_encryptionkey(sess);
1401 if (rc) {
1402 ksmbd_debug(SMB,
070fb21e 1403 "SMB3 encryption key generation failed\n");
e2f34481
NJ		 1404 rsp->hdr.Status = STATUS_LOGON_FAILURE;
1405 return rc;
1406 }
1407 sess->enc = true;
1408 rsp->SessionFlags = SMB2_SESSION_FLAG_ENCRYPT_DATA_LE;
1409 /*
1410 * signing is disable if encryption is enable
1411 * on this session
1412 */
1413 sess->sign = false;
1414 }
1415 }
1416
f5a544e3 1417binding_session:
e2f34481 1418 if (conn->dialect >= SMB30_PROT_ID) {
f5a544e3 1419 chann = lookup_chann_list(sess, conn);
e2f34481
NJ		 1420 if (!chann) {
1421 chann = kmalloc(sizeof(struct channel), GFP_KERNEL);
1422 if (!chann)
1423 return -ENOMEM;
1424
1425 chann->conn = conn;
1426 INIT_LIST_HEAD(&chann->chann_list);
1427 list_add(&chann->chann_list, &sess->ksmbd_chann_list);
1428 }
1429 }
1430
1431 if (conn->ops->generate_signingkey) {
f5a544e3 1432 rc = conn->ops->generate_signingkey(sess, conn);
e2f34481 1433 if (rc) {
64b39f4a 1434 ksmbd_debug(SMB, "SMB3 signing key generation failed\n");
e2f34481
NJ		 1435 rsp->hdr.Status = STATUS_LOGON_FAILURE;
1436 return rc;
1437 }
1438 }
1439
1440 if (conn->dialect > SMB20_PROT_ID) {
1441 if (!ksmbd_conn_lookup_dialect(conn)) {
bde1694a 1442 pr_err("fail to verify the dialect\n");
e2f34481
NJ		 1443 rsp->hdr.Status = STATUS_USER_SESSION_DELETED;
1444 return -EPERM;
1445 }
1446 }
1447 return 0;
1448}
1449
1450#ifdef CONFIG_SMB_SERVER_KERBEROS5
1451static int krb5_authenticate(struct ksmbd_work *work)
1452{
e5066499
NJ		 1453 struct smb2_sess_setup_req *req = work->request_buf;
1454 struct smb2_sess_setup_rsp *rsp = work->response_buf;
e2f34481
NJ		 1455 struct ksmbd_conn *conn = work->conn;
1456 struct ksmbd_session *sess = work->sess;
1457 char *in_blob, *out_blob;
1458 struct channel *chann = NULL;
64b39f4a 1459 u64 prev_sess_id;
e2f34481
NJ		 1460 int in_len, out_len;
1461 int retval;
1462
1463 in_blob = (char *)&req->hdr.ProtocolId +
1464 le16_to_cpu(req->SecurityBufferOffset);
1465 in_len = le16_to_cpu(req->SecurityBufferLength);
1466 out_blob = (char *)&rsp->hdr.ProtocolId +
1467 le16_to_cpu(rsp->SecurityBufferOffset);
1468 out_len = work->response_sz -
1469 offsetof(struct smb2_hdr, smb2_buf_length) -
1470 le16_to_cpu(rsp->SecurityBufferOffset);
1471
1472 /* Check previous session */
1473 prev_sess_id = le64_to_cpu(req->PreviousSessionId);
1474 if (prev_sess_id && prev_sess_id != sess->id)
1475 destroy_previous_session(sess->user, prev_sess_id);
1476
1477 if (sess->state == SMB2_SESSION_VALID)
1478 ksmbd_free_user(sess->user);
1479
1480 retval = ksmbd_krb5_authenticate(sess, in_blob, in_len,
070fb21e 1481 out_blob, &out_len);
e2f34481
NJ		 1482 if (retval) {
1483 ksmbd_debug(SMB, "krb5 authentication failed\n");
1484 rsp->hdr.Status = STATUS_LOGON_FAILURE;
1485 return retval;
1486 }
1487 rsp->SecurityBufferLength = cpu_to_le16(out_len);
1488 inc_rfc1001_len(rsp, out_len - 1);
1489
1490 if ((conn->sign || server_conf.enforced_signing) ||
64b39f4a 1491 (req->SecurityMode & SMB2_NEGOTIATE_SIGNING_REQUIRED))
e2f34481
NJ		 1492 sess->sign = true;
1493
1494 if ((conn->vals->capabilities & SMB2_GLOBAL_CAP_ENCRYPTION) &&
64b39f4a 1495 conn->ops->generate_encryptionkey) {
e2f34481
NJ		 1496 retval = conn->ops->generate_encryptionkey(sess);
1497 if (retval) {
1498 ksmbd_debug(SMB,
070fb21e 1499 "SMB3 encryption key generation failed\n");
e2f34481
NJ		 1500 rsp->hdr.Status = STATUS_LOGON_FAILURE;
1501 return retval;
1502 }
1503 sess->enc = true;
1504 rsp->SessionFlags = SMB2_SESSION_FLAG_ENCRYPT_DATA_LE;
1505 sess->sign = false;
1506 }
1507
1508 if (conn->dialect >= SMB30_PROT_ID) {
f5a544e3 1509 chann = lookup_chann_list(sess, conn);
e2f34481
NJ		 1510 if (!chann) {
1511 chann = kmalloc(sizeof(struct channel), GFP_KERNEL);
1512 if (!chann)
1513 return -ENOMEM;
1514
1515 chann->conn = conn;
1516 INIT_LIST_HEAD(&chann->chann_list);
1517 list_add(&chann->chann_list, &sess->ksmbd_chann_list);
1518 }
1519 }
1520
1521 if (conn->ops->generate_signingkey) {
f5a544e3 1522 retval = conn->ops->generate_signingkey(sess, conn);
e2f34481 1523 if (retval) {
64b39f4a 1524 ksmbd_debug(SMB, "SMB3 signing key generation failed\n");
e2f34481
NJ		 1525 rsp->hdr.Status = STATUS_LOGON_FAILURE;
1526 return retval;
1527 }
1528 }
1529
1530 if (conn->dialect > SMB20_PROT_ID) {
1531 if (!ksmbd_conn_lookup_dialect(conn)) {
bde1694a 1532 pr_err("fail to verify the dialect\n");
e2f34481
NJ		 1533 rsp->hdr.Status = STATUS_USER_SESSION_DELETED;
1534 return -EPERM;
1535 }
1536 }
1537 return 0;
1538}
1539#else
1540static int krb5_authenticate(struct ksmbd_work *work)
1541{
1542 return -EOPNOTSUPP;
1543}
1544#endif
1545
1546int smb2_sess_setup(struct ksmbd_work *work)
1547{
1548 struct ksmbd_conn *conn = work->conn;
e5066499
NJ		 1549 struct smb2_sess_setup_req *req = work->request_buf;
1550 struct smb2_sess_setup_rsp *rsp = work->response_buf;
e2f34481
NJ		 1551 struct ksmbd_session *sess;
1552 struct negotiate_message *negblob;
1553 int rc = 0;
1554
1555 ksmbd_debug(SMB, "Received request for session setup\n");
1556
1557 rsp->StructureSize = cpu_to_le16(9);
1558 rsp->SessionFlags = 0;
1559 rsp->SecurityBufferOffset = cpu_to_le16(72);
1560 rsp->SecurityBufferLength = 0;
1561 inc_rfc1001_len(rsp, 9);
1562
1563 if (!req->hdr.SessionId) {
1564 sess = ksmbd_smb2_session_create();
1565 if (!sess) {
1566 rc = -ENOMEM;
1567 goto out_err;
1568 }
1569 rsp->hdr.SessionId = cpu_to_le64(sess->id);
1570 ksmbd_session_register(conn, sess);
f5a544e3
NJ		 1571 } else if (conn->dialect >= SMB30_PROT_ID &&
1572 (server_conf.flags & KSMBD_GLOBAL_FLAG_SMB3_MULTICHANNEL) &&
1573 req->Flags & SMB2_SESSION_REQ_FLAG_BINDING) {
1574 u64 sess_id = le64_to_cpu(req->hdr.SessionId);
1575
1576 sess = ksmbd_session_lookup_slowpath(sess_id);
1577 if (!sess) {
1578 rc = -ENOENT;
1579 goto out_err;
1580 }
1581
1582 if (conn->dialect != sess->conn->dialect) {
1583 rc = -EINVAL;
1584 goto out_err;
1585 }
1586
1587 if (!(req->hdr.Flags & SMB2_FLAGS_SIGNED)) {
1588 rc = -EINVAL;
1589 goto out_err;
1590 }
1591
1592 if (strncmp(conn->ClientGUID, sess->conn->ClientGUID,
1593 SMB2_CLIENT_GUID_SIZE)) {
1594 rc = -ENOENT;
1595 goto out_err;
1596 }
1597
1598 if (sess->state == SMB2_SESSION_IN_PROGRESS) {
1599 rc = -EACCES;
1600 goto out_err;
1601 }
1602
1603 if (sess->state == SMB2_SESSION_EXPIRED) {
1604 rc = -EFAULT;
1605 goto out_err;
1606 }
1607
1608 if (ksmbd_session_lookup(conn, sess_id)) {
1609 rc = -EACCES;
1610 goto out_err;
1611 }
1612
1613 conn->binding = true;
1614 } else if ((conn->dialect < SMB30_PROT_ID ||
1615 server_conf.flags & KSMBD_GLOBAL_FLAG_SMB3_MULTICHANNEL) &&
1616 (req->Flags & SMB2_SESSION_REQ_FLAG_BINDING)) {
1617 rc = -EACCES;
1618 goto out_err;
e2f34481
NJ		 1619 } else {
1620 sess = ksmbd_session_lookup(conn,
070fb21e 1621 le64_to_cpu(req->hdr.SessionId));
e2f34481
NJ		 1622 if (!sess) {
1623 rc = -ENOENT;
e2f34481
NJ		 1624 goto out_err;
1625 }
1626 }
1627 work->sess = sess;
1628
1629 if (sess->state == SMB2_SESSION_EXPIRED)
1630 sess->state = SMB2_SESSION_IN_PROGRESS;
1631
1632 negblob = (struct negotiate_message *)((char *)&req->hdr.ProtocolId +
1633 le16_to_cpu(req->SecurityBufferOffset));
1634
1635 if (decode_negotiation_token(work, negblob) == 0) {
1636 if (conn->mechToken)
1637 negblob = (struct negotiate_message *)conn->mechToken;
1638 }
1639
1640 if (server_conf.auth_mechs & conn->auth_mechs) {
f5a544e3
NJ		 1641 rc = generate_preauth_hash(work);
1642 if (rc)
1643 goto out_err;
1644
e2f34481
NJ		 1645 if (conn->preferred_auth_mech &
1646 (KSMBD_AUTH_KRB5 | KSMBD_AUTH_MSKRB5)) {
e2f34481
NJ		 1647 rc = krb5_authenticate(work);
1648 if (rc) {
f5a544e3 1649 rc = -EINVAL;
e2f34481
NJ		 1650 goto out_err;
1651 }
1652
1653 ksmbd_conn_set_good(work);
1654 sess->state = SMB2_SESSION_VALID;
822bc8ea 1655 kfree(sess->Preauth_HashValue);
e2f34481
NJ		 1656 sess->Preauth_HashValue = NULL;
1657 } else if (conn->preferred_auth_mech == KSMBD_AUTH_NTLMSSP) {
e2f34481
NJ		 1658 if (negblob->MessageType == NtLmNegotiate) {
1659 rc = ntlm_negotiate(work, negblob);
1660 if (rc)
1661 goto out_err;
1662 rsp->hdr.Status =
1663 STATUS_MORE_PROCESSING_REQUIRED;
1664 /*
1665 * Note: here total size -1 is done as an
1666 * adjustment for 0 size blob
1667 */
64b39f4a 1668 inc_rfc1001_len(rsp, le16_to_cpu(rsp->SecurityBufferLength) - 1);
e2f34481
NJ		 1669
1670 } else if (negblob->MessageType == NtLmAuthenticate) {
1671 rc = ntlm_authenticate(work);
1672 if (rc)
1673 goto out_err;
1674
1675 ksmbd_conn_set_good(work);
1676 sess->state = SMB2_SESSION_VALID;
f5a544e3
NJ		 1677 if (conn->binding) {
1678 struct preauth_session *preauth_sess;
1679
1680 preauth_sess =
1681 ksmbd_preauth_session_lookup(conn, sess->id);
1682 if (preauth_sess) {
1683 list_del(&preauth_sess->preauth_entry);
1684 kfree(preauth_sess);
1685 }
1686 }
822bc8ea 1687 kfree(sess->Preauth_HashValue);
e2f34481
NJ		 1688 sess->Preauth_HashValue = NULL;
1689 }
1690 } else {
1691 /* TODO: need one more negotiation */
bde1694a 1692 pr_err("Not support the preferred authentication\n");
e2f34481 1693 rc = -EINVAL;
e2f34481
NJ		 1694 }
1695 } else {
bde1694a 1696 pr_err("Not support authentication\n");
e2f34481 1697 rc = -EINVAL;
e2f34481
NJ		 1698 }
1699
1700out_err:
f5a544e3
NJ		 1701 if (rc == -EINVAL)
1702 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
1703 else if (rc == -ENOENT)
1704 rsp->hdr.Status = STATUS_USER_SESSION_DELETED;
1705 else if (rc == -EACCES)
1706 rsp->hdr.Status = STATUS_REQUEST_NOT_ACCEPTED;
1707 else if (rc == -EFAULT)
1708 rsp->hdr.Status = STATUS_NETWORK_SESSION_EXPIRED;
1709 else if (rc)
1710 rsp->hdr.Status = STATUS_LOGON_FAILURE;
1711
e2f34481
NJ		 1712 if (conn->use_spnego && conn->mechToken) {
1713 kfree(conn->mechToken);
1714 conn->mechToken = NULL;
1715 }
1716
1717 if (rc < 0 && sess) {
1718 ksmbd_session_destroy(sess);
1719 work->sess = NULL;
1720 }
1721
1722 return rc;
1723}
1724
1725/**
1726 * smb2_tree_connect() - handler for smb2 tree connect command
1727 * @work: smb work containing smb request buffer
1728 *
1729 * Return: 0 on success, otherwise error
1730 */
1731int smb2_tree_connect(struct ksmbd_work *work)
1732{
1733 struct ksmbd_conn *conn = work->conn;
e5066499
NJ		 1734 struct smb2_tree_connect_req *req = work->request_buf;
1735 struct smb2_tree_connect_rsp *rsp = work->response_buf;
e2f34481
NJ		 1736 struct ksmbd_session *sess = work->sess;
1737 char *treename = NULL, *name = NULL;
1738 struct ksmbd_tree_conn_status status;
1739 struct ksmbd_share_config *share;
1740 int rc = -EINVAL;
1741
1742 treename = smb_strndup_from_utf16(req->Buffer,
070fb21e
NJ		 1743 le16_to_cpu(req->PathLength), true,
1744 conn->local_nls);
e2f34481 1745 if (IS_ERR(treename)) {
bde1694a 1746 pr_err("treename is NULL\n");
e2f34481
NJ		 1747 status.ret = KSMBD_TREE_CONN_STATUS_ERROR;
1748 goto out_err1;
1749 }
1750
36ba3866 1751 name = ksmbd_extract_sharename(treename);
e2f34481
NJ		 1752 if (IS_ERR(name)) {
1753 status.ret = KSMBD_TREE_CONN_STATUS_ERROR;
1754 goto out_err1;
1755 }
1756
1757 ksmbd_debug(SMB, "tree connect request for tree %s treename %s\n",
070fb21e 1758 name, treename);
e2f34481
NJ		 1759
1760 status = ksmbd_tree_conn_connect(sess, name);
1761 if (status.ret == KSMBD_TREE_CONN_STATUS_OK)
1762 rsp->hdr.Id.SyncId.TreeId = cpu_to_le32(status.tree_conn->id);
1763 else
1764 goto out_err1;
1765
1766 share = status.tree_conn->share_conf;
1767 if (test_share_config_flag(share, KSMBD_SHARE_FLAG_PIPE)) {
1768 ksmbd_debug(SMB, "IPC share path request\n");
1769 rsp->ShareType = SMB2_SHARE_TYPE_PIPE;
1770 rsp->MaximalAccess = FILE_READ_DATA_LE | FILE_READ_EA_LE |
1771 FILE_EXECUTE_LE | FILE_READ_ATTRIBUTES_LE |
1772 FILE_DELETE_LE | FILE_READ_CONTROL_LE |
1773 FILE_WRITE_DAC_LE | FILE_WRITE_OWNER_LE |
1774 FILE_SYNCHRONIZE_LE;
1775 } else {
1776 rsp->ShareType = SMB2_SHARE_TYPE_DISK;
1777 rsp->MaximalAccess = FILE_READ_DATA_LE | FILE_READ_EA_LE |
1778 FILE_EXECUTE_LE | FILE_READ_ATTRIBUTES_LE;
1779 if (test_tree_conn_flag(status.tree_conn,
1780 KSMBD_TREE_CONN_FLAG_WRITABLE)) {
1781 rsp->MaximalAccess |= FILE_WRITE_DATA_LE |
1782 FILE_APPEND_DATA_LE | FILE_WRITE_EA_LE |
3aefd54d
WJ		 1783 FILE_DELETE_LE | FILE_WRITE_ATTRIBUTES_LE |
1784 FILE_DELETE_CHILD_LE | FILE_READ_CONTROL_LE |
1785 FILE_WRITE_DAC_LE | FILE_WRITE_OWNER_LE |
1786 FILE_SYNCHRONIZE_LE;
e2f34481
NJ		 1787 }
1788 }
1789
1790 status.tree_conn->maximal_access = le32_to_cpu(rsp->MaximalAccess);
1791 if (conn->posix_ext_supported)
1792 status.tree_conn->posix_extensions = true;
1793
1794out_err1:
1795 rsp->StructureSize = cpu_to_le16(16);
1796 rsp->Capabilities = 0;
1797 rsp->Reserved = 0;
1798 /* default manual caching */
1799 rsp->ShareFlags = SMB2_SHAREFLAG_MANUAL_CACHING;
1800 inc_rfc1001_len(rsp, 16);
1801
1802 if (!IS_ERR(treename))
1803 kfree(treename);
1804 if (!IS_ERR(name))
1805 kfree(name);
1806
1807 switch (status.ret) {
1808 case KSMBD_TREE_CONN_STATUS_OK:
1809 rsp->hdr.Status = STATUS_SUCCESS;
1810 rc = 0;
1811 break;
1812 case KSMBD_TREE_CONN_STATUS_NO_SHARE:
1813 rsp->hdr.Status = STATUS_BAD_NETWORK_PATH;
1814 break;
1815 case -ENOMEM:
1816 case KSMBD_TREE_CONN_STATUS_NOMEM:
1817 rsp->hdr.Status = STATUS_NO_MEMORY;
1818 break;
1819 case KSMBD_TREE_CONN_STATUS_ERROR:
1820 case KSMBD_TREE_CONN_STATUS_TOO_MANY_CONNS:
1821 case KSMBD_TREE_CONN_STATUS_TOO_MANY_SESSIONS:
1822 rsp->hdr.Status = STATUS_ACCESS_DENIED;
1823 break;
1824 case -EINVAL:
1825 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
1826 break;
1827 default:
1828 rsp->hdr.Status = STATUS_ACCESS_DENIED;
1829 }
1830
1831 return rc;
1832}
1833
1834/**
1835 * smb2_create_open_flags() - convert smb open flags to unix open flags
1836 * @file_present: is file already present
1837 * @access: file access flags
1838 * @disposition: file disposition flags
6c5e36d1 1839 * @may_flags: set with MAY_ flags
e2f34481
NJ		 1840 *
1841 * Return: file open flags
1842 */
1843static int smb2_create_open_flags(bool file_present, __le32 access,
6c5e36d1
HL		 1844 __le32 disposition,
1845 int *may_flags)
e2f34481
NJ		 1846{
1847 int oflags = O_NONBLOCK | O_LARGEFILE;
1848
1849 if (access & FILE_READ_DESIRED_ACCESS_LE &&
6c5e36d1 1850 access & FILE_WRITE_DESIRE_ACCESS_LE) {
e2f34481 1851 oflags |= O_RDWR;
6c5e36d1
HL		 1852 *may_flags = MAY_OPEN | MAY_READ | MAY_WRITE;
1853 } else if (access & FILE_WRITE_DESIRE_ACCESS_LE) {
e2f34481 1854 oflags |= O_WRONLY;
6c5e36d1
HL		 1855 *may_flags = MAY_OPEN | MAY_WRITE;
1856 } else {
e2f34481 1857 oflags |= O_RDONLY;
6c5e36d1
HL		 1858 *may_flags = MAY_OPEN | MAY_READ;
1859 }
e2f34481
NJ		 1860
1861 if (access == FILE_READ_ATTRIBUTES_LE)
1862 oflags |= O_PATH;
1863
1864 if (file_present) {
1865 switch (disposition & FILE_CREATE_MASK_LE) {
1866 case FILE_OPEN_LE:
1867 case FILE_CREATE_LE:
1868 break;
1869 case FILE_SUPERSEDE_LE:
1870 case FILE_OVERWRITE_LE:
1871 case FILE_OVERWRITE_IF_LE:
1872 oflags |= O_TRUNC;
1873 break;
1874 default:
1875 break;
1876 }
1877 } else {
1878 switch (disposition & FILE_CREATE_MASK_LE) {
1879 case FILE_SUPERSEDE_LE:
1880 case FILE_CREATE_LE:
1881 case FILE_OPEN_IF_LE:
1882 case FILE_OVERWRITE_IF_LE:
1883 oflags |= O_CREAT;
1884 break;
1885 case FILE_OPEN_LE:
1886 case FILE_OVERWRITE_LE:
1887 oflags &= ~O_CREAT;
1888 break;
1889 default:
1890 break;
1891 }
1892 }
6c5e36d1 1893
e2f34481
NJ		 1894 return oflags;
1895}
1896
1897/**
1898 * smb2_tree_disconnect() - handler for smb tree connect request
1899 * @work: smb work containing request buffer
1900 *
1901 * Return: 0
1902 */
1903int smb2_tree_disconnect(struct ksmbd_work *work)
1904{
e5066499 1905 struct smb2_tree_disconnect_rsp *rsp = work->response_buf;
e2f34481
NJ		 1906 struct ksmbd_session *sess = work->sess;
1907 struct ksmbd_tree_connect *tcon = work->tcon;
1908
1909 rsp->StructureSize = cpu_to_le16(4);
1910 inc_rfc1001_len(rsp, 4);
1911
1912 ksmbd_debug(SMB, "request\n");
1913
1914 if (!tcon) {
e5066499 1915 struct smb2_tree_disconnect_req *req = work->request_buf;
e2f34481
NJ		 1916
1917 ksmbd_debug(SMB, "Invalid tid %d\n", req->hdr.Id.SyncId.TreeId);
1918 rsp->hdr.Status = STATUS_NETWORK_NAME_DELETED;
1919 smb2_set_err_rsp(work);
1920 return 0;
1921 }
1922
1923 ksmbd_close_tree_conn_fds(work);
1924 ksmbd_tree_conn_disconnect(sess, tcon);
1925 return 0;
1926}
1927
1928/**
1929 * smb2_session_logoff() - handler for session log off request
1930 * @work: smb work containing request buffer
1931 *
1932 * Return: 0
1933 */
1934int smb2_session_logoff(struct ksmbd_work *work)
1935{
1936 struct ksmbd_conn *conn = work->conn;
e5066499 1937 struct smb2_logoff_rsp *rsp = work->response_buf;
e2f34481
NJ		 1938 struct ksmbd_session *sess = work->sess;
1939
1940 rsp->StructureSize = cpu_to_le16(4);
1941 inc_rfc1001_len(rsp, 4);
1942
1943 ksmbd_debug(SMB, "request\n");
1944
1945 /* Got a valid session, set connection state */
1946 WARN_ON(sess->conn != conn);
1947
1948 /* setting CifsExiting here may race with start_tcp_sess */
1949 ksmbd_conn_set_need_reconnect(work);
1950 ksmbd_close_session_fds(work);
1951 ksmbd_conn_wait_idle(conn);
1952
1953 if (ksmbd_tree_conn_session_logoff(sess)) {
e5066499 1954 struct smb2_logoff_req *req = work->request_buf;
e2f34481
NJ		 1955
1956 ksmbd_debug(SMB, "Invalid tid %d\n", req->hdr.Id.SyncId.TreeId);
1957 rsp->hdr.Status = STATUS_NETWORK_NAME_DELETED;
1958 smb2_set_err_rsp(work);
1959 return 0;
1960 }
1961
1962 ksmbd_destroy_file_table(&sess->file_table);
1963 sess->state = SMB2_SESSION_EXPIRED;
1964
1965 ksmbd_free_user(sess->user);
1966 sess->user = NULL;
1967
1968 /* let start_tcp_sess free connection info now */
1969 ksmbd_conn_set_need_negotiate(work);
1970 return 0;
1971}
1972
1973/**
1974 * create_smb2_pipe() - create IPC pipe
1975 * @work: smb work containing request buffer
1976 *
1977 * Return: 0 on success, otherwise error
1978 */
1979static noinline int create_smb2_pipe(struct ksmbd_work *work)
1980{
e5066499
NJ		 1981 struct smb2_create_rsp *rsp = work->response_buf;
1982 struct smb2_create_req *req = work->request_buf;
e2f34481
NJ		 1983 int id;
1984 int err;
1985 char *name;
1986
1987 name = smb_strndup_from_utf16(req->Buffer, le16_to_cpu(req->NameLength),
070fb21e 1988 1, work->conn->local_nls);
e2f34481
NJ		 1989 if (IS_ERR(name)) {
1990 rsp->hdr.Status = STATUS_NO_MEMORY;
1991 err = PTR_ERR(name);
1992 goto out;
1993 }
1994
1995 id = ksmbd_session_rpc_open(work->sess, name);
79caa960 1996 if (id < 0) {
bde1694a 1997 pr_err("Unable to open RPC pipe: %d\n", id);
79caa960
MM		 1998 err = id;
1999 goto out;
2000 }
e2f34481 2001
79caa960 2002 rsp->hdr.Status = STATUS_SUCCESS;
e2f34481
NJ		 2003 rsp->StructureSize = cpu_to_le16(89);
2004 rsp->OplockLevel = SMB2_OPLOCK_LEVEL_NONE;
2005 rsp->Reserved = 0;
2006 rsp->CreateAction = cpu_to_le32(FILE_OPENED);
2007
2008 rsp->CreationTime = cpu_to_le64(0);
2009 rsp->LastAccessTime = cpu_to_le64(0);
2010 rsp->ChangeTime = cpu_to_le64(0);
2011 rsp->AllocationSize = cpu_to_le64(0);
2012 rsp->EndofFile = cpu_to_le64(0);
2013 rsp->FileAttributes = ATTR_NORMAL_LE;
2014 rsp->Reserved2 = 0;
2015 rsp->VolatileFileId = cpu_to_le64(id);
2016 rsp->PersistentFileId = 0;
2017 rsp->CreateContextsOffset = 0;
2018 rsp->CreateContextsLength = 0;
2019
2020 inc_rfc1001_len(rsp, 88); /* StructureSize - 1*/
2021 kfree(name);
2022 return 0;
2023
2024out:
79caa960
MM		 2025 switch (err) {
2026 case -EINVAL:
2027 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
2028 break;
2029 case -ENOSPC:
2030 case -ENOMEM:
2031 rsp->hdr.Status = STATUS_NO_MEMORY;
2032 break;
2033 }
2034
2035 if (!IS_ERR(name))
2036 kfree(name);
2037
e2f34481
NJ		 2038 smb2_set_err_rsp(work);
2039 return err;
2040}
2041
e2f34481
NJ		 2042/**
2043 * smb2_set_ea() - handler for setting extended attributes using set
2044 * info command
2045 * @eabuf: set info command buffer
2046 * @path: dentry path for get ea
2047 *
2048 * Return: 0 on success, otherwise error
2049 */
2050static int smb2_set_ea(struct smb2_ea_info *eabuf, struct path *path)
2051{
2052 char *attr_name = NULL, *value;
2053 int rc = 0;
2054 int next = 0;
2055
2056 attr_name = kmalloc(XATTR_NAME_MAX + 1, GFP_KERNEL);
2057 if (!attr_name)
2058 return -ENOMEM;
2059
2060 do {
2061 if (!eabuf->EaNameLength)
2062 goto next;
2063
2064 ksmbd_debug(SMB,
070fb21e
NJ		 2065 "name : <%s>, name_len : %u, value_len : %u, next : %u\n",
2066 eabuf->name, eabuf->EaNameLength,
2067 le16_to_cpu(eabuf->EaValueLength),
2068 le32_to_cpu(eabuf->NextEntryOffset));
e2f34481
NJ		 2069
2070 if (eabuf->EaNameLength >
070fb21e 2071 (XATTR_NAME_MAX - XATTR_USER_PREFIX_LEN)) {
e2f34481
NJ		 2072 rc = -EINVAL;
2073 break;
2074 }
2075
2076 memcpy(attr_name, XATTR_USER_PREFIX, XATTR_USER_PREFIX_LEN);
2077 memcpy(&attr_name[XATTR_USER_PREFIX_LEN], eabuf->name,
070fb21e 2078 eabuf->EaNameLength);
e2f34481
NJ		 2079 attr_name[XATTR_USER_PREFIX_LEN + eabuf->EaNameLength] = '\0';
2080 value = (char *)&eabuf->name + eabuf->EaNameLength + 1;
2081
2082 if (!eabuf->EaValueLength) {
2083 rc = ksmbd_vfs_casexattr_len(path->dentry,
2084 attr_name,
2085 XATTR_USER_PREFIX_LEN +
2086 eabuf->EaNameLength);
2087
2088 /* delete the EA only when it exits */
2089 if (rc > 0) {
2090 rc = ksmbd_vfs_remove_xattr(path->dentry,
2091 attr_name);
2092
2093 if (rc < 0) {
2094 ksmbd_debug(SMB,
070fb21e
NJ		 2095 "remove xattr failed(%d)\n",
2096 rc);
e2f34481
NJ		 2097 break;
2098 }
2099 }
2100
2101 /* if the EA doesn't exist, just do nothing. */
2102 rc = 0;
2103 } else {
2104 rc = ksmbd_vfs_setxattr(path->dentry, attr_name, value,
070fb21e 2105 le16_to_cpu(eabuf->EaValueLength), 0);
e2f34481
NJ		 2106 if (rc < 0) {
2107 ksmbd_debug(SMB,
070fb21e
NJ		 2108 "ksmbd_vfs_setxattr is failed(%d)\n",
2109 rc);
e2f34481
NJ		 2110 break;
2111 }
2112 }
2113
2114next:
2115 next = le32_to_cpu(eabuf->NextEntryOffset);
2116 eabuf = (struct smb2_ea_info *)((char *)eabuf + next);
2117 } while (next != 0);
2118
2119 kfree(attr_name);
2120 return rc;
2121}
2122
2123static inline int check_context_err(void *ctx, char *str)
2124{
2125 int err;
2126
2127 err = PTR_ERR(ctx);
2128 ksmbd_debug(SMB, "find context %s err %d\n", str, err);
2129
2130 if (err == -EINVAL) {
bde1694a 2131 pr_err("bad name length\n");
e2f34481
NJ		 2132 return err;
2133 }
2134
2135 return 0;
2136}
2137
2138static noinline int smb2_set_stream_name_xattr(struct path *path,
070fb21e
NJ		 2139 struct ksmbd_file *fp,
2140 char *stream_name, int s_type)
e2f34481
NJ		 2141{
2142 size_t xattr_stream_size;
2143 char *xattr_stream_name;
2144 int rc;
2145
2146 rc = ksmbd_vfs_xattr_stream_name(stream_name,
2147 &xattr_stream_name,
2148 &xattr_stream_size,
2149 s_type);
2150 if (rc)
2151 return rc;
2152
2153 fp->stream.name = xattr_stream_name;
2154 fp->stream.size = xattr_stream_size;
2155
2156 /* Check if there is stream prefix in xattr space */
2157 rc = ksmbd_vfs_casexattr_len(path->dentry,
2158 xattr_stream_name,
2159 xattr_stream_size);
2160 if (rc >= 0)
2161 return 0;
2162
2163 if (fp->cdoption == FILE_OPEN_LE) {
2164 ksmbd_debug(SMB, "XATTR stream name lookup failed: %d\n", rc);
2165 return -EBADF;
2166 }
2167
2168 rc = ksmbd_vfs_setxattr(path->dentry, xattr_stream_name, NULL, 0, 0);
2169 if (rc < 0)
bde1694a 2170 pr_err("Failed to store XATTR stream name :%d\n", rc);
e2f34481
NJ		 2171 return 0;
2172}
2173
2174static int smb2_remove_smb_xattrs(struct dentry *dentry)
2175{
2176 char *name, *xattr_list = NULL;
2177 ssize_t xattr_list_len;
2178 int err = 0;
2179
2180 xattr_list_len = ksmbd_vfs_listxattr(dentry, &xattr_list);
2181 if (xattr_list_len < 0) {
2182 goto out;
2183 } else if (!xattr_list_len) {
2184 ksmbd_debug(SMB, "empty xattr in the file\n");
2185 goto out;
2186 }
2187
2188 for (name = xattr_list; name - xattr_list < xattr_list_len;
2189 name += strlen(name) + 1) {
2190 ksmbd_debug(SMB, "%s, len %zd\n", name, strlen(name));
2191
2192 if (strncmp(name, XATTR_USER_PREFIX, XATTR_USER_PREFIX_LEN) &&
64b39f4a
NJ		 2193 strncmp(&name[XATTR_USER_PREFIX_LEN], DOS_ATTRIBUTE_PREFIX,
2194 DOS_ATTRIBUTE_PREFIX_LEN) &&
2195 strncmp(&name[XATTR_USER_PREFIX_LEN], STREAM_PREFIX, STREAM_PREFIX_LEN))
e2f34481
NJ		 2196 continue;
2197
2198 err = ksmbd_vfs_remove_xattr(dentry, name);
2199 if (err)
2200 ksmbd_debug(SMB, "remove xattr failed : %s\n", name);
2201 }
2202out:
79f6b11a 2203 kvfree(xattr_list);
e2f34481
NJ		 2204 return err;
2205}
2206
2207static int smb2_create_truncate(struct path *path)
2208{
2209 int rc = vfs_truncate(path, 0);
2210
2211 if (rc) {
bde1694a 2212 pr_err("vfs_truncate failed, rc %d\n", rc);
e2f34481
NJ		 2213 return rc;
2214 }
2215
2216 rc = smb2_remove_smb_xattrs(path->dentry);
2217 if (rc == -EOPNOTSUPP)
2218 rc = 0;
2219 if (rc)
2220 ksmbd_debug(SMB,
070fb21e
NJ		 2221 "ksmbd_truncate_stream_name_xattr failed, rc %d\n",
2222 rc);
e2f34481
NJ		 2223 return rc;
2224}
2225
64b39f4a 2226static void smb2_new_xattrs(struct ksmbd_tree_connect *tcon, struct path *path,
070fb21e 2227 struct ksmbd_file *fp)
e2f34481
NJ		 2228{
2229 struct xattr_dos_attrib da = {0};
2230 int rc;
2231
2232 if (!test_share_config_flag(tcon->share_conf,
2233 KSMBD_SHARE_FLAG_STORE_DOS_ATTRS))
2234 return;
2235
2236 da.version = 4;
2237 da.attr = le32_to_cpu(fp->f_ci->m_fattr);
2238 da.itime = da.create_time = fp->create_time;
2239 da.flags = XATTR_DOSINFO_ATTRIB | XATTR_DOSINFO_CREATE_TIME |
2240 XATTR_DOSINFO_ITIME;
2241
2242 rc = ksmbd_vfs_set_dos_attrib_xattr(path->dentry, &da);
2243 if (rc)
2244 ksmbd_debug(SMB, "failed to store file attribute into xattr\n");
2245}
2246
2247static void smb2_update_xattrs(struct ksmbd_tree_connect *tcon,
070fb21e 2248 struct path *path, struct ksmbd_file *fp)
e2f34481
NJ		 2249{
2250 struct xattr_dos_attrib da;
2251 int rc;
2252
2253 fp->f_ci->m_fattr &= ~(ATTR_HIDDEN_LE | ATTR_SYSTEM_LE);
2254
2255 /* get FileAttributes from XATTR_NAME_DOS_ATTRIBUTE */
2256 if (!test_share_config_flag(tcon->share_conf,
64b39f4a 2257 KSMBD_SHARE_FLAG_STORE_DOS_ATTRS))
e2f34481
NJ		 2258 return;
2259
2260 rc = ksmbd_vfs_get_dos_attrib_xattr(path->dentry, &da);
2261 if (rc > 0) {
2262 fp->f_ci->m_fattr = cpu_to_le32(da.attr);
2263 fp->create_time = da.create_time;
2264 fp->itime = da.itime;
2265 }
2266}
2267
64b39f4a 2268static int smb2_creat(struct ksmbd_work *work, struct path *path, char *name,
070fb21e 2269 int open_flags, umode_t posix_mode, bool is_dir)
e2f34481
NJ		 2270{
2271 struct ksmbd_tree_connect *tcon = work->tcon;
2272 struct ksmbd_share_config *share = tcon->share_conf;
2273 umode_t mode;
2274 int rc;
2275
2276 if (!(open_flags & O_CREAT))
2277 return -EBADF;
2278
2279 ksmbd_debug(SMB, "file does not exist, so creating\n");
2280 if (is_dir == true) {
2281 ksmbd_debug(SMB, "creating directory\n");
2282
2283 mode = share_config_directory_mode(share, posix_mode);
2284 rc = ksmbd_vfs_mkdir(work, name, mode);
2285 if (rc)
2286 return rc;
2287 } else {
2288 ksmbd_debug(SMB, "creating regular file\n");
2289
2290 mode = share_config_create_mode(share, posix_mode);
2291 rc = ksmbd_vfs_create(work, name, mode);
2292 if (rc)
2293 return rc;
2294 }
2295
2296 rc = ksmbd_vfs_kern_path(name, 0, path, 0);
2297 if (rc) {
bde1694a
NJ		 2298 pr_err("cannot get linux path (%s), err = %d\n",
2299 name, rc);
e2f34481
NJ		 2300 return rc;
2301 }
2302 return 0;
2303}
2304
2305static int smb2_create_sd_buffer(struct ksmbd_work *work,
070fb21e
NJ		 2306 struct smb2_create_req *req,
2307 struct dentry *dentry)
e2f34481
NJ		 2308{
2309 struct create_context *context;
2310 int rc = -ENOENT;
2311
2312 if (!req->CreateContextsOffset)
2313 return rc;
2314
2315 /* Parse SD BUFFER create contexts */
2316 context = smb2_find_context_vals(req, SMB2_CREATE_SD_BUFFER);
2317 if (context && !IS_ERR(context)) {
2318 struct create_sd_buf_req *sd_buf;
2319
2320 ksmbd_debug(SMB,
070fb21e 2321 "Set ACLs using SMB2_CREATE_SD_BUFFER context\n");
e2f34481
NJ		 2322 sd_buf = (struct create_sd_buf_req *)context;
2323 rc = set_info_sec(work->conn, work->tcon, dentry, &sd_buf->ntsd,
070fb21e 2324 le32_to_cpu(sd_buf->ccontext.DataLength), true);
e2f34481
NJ		 2325 }
2326
2327 return rc;
2328}
2329
3d47e546
NJ		 2330static void ksmbd_acls_fattr(struct smb_fattr *fattr, struct inode *inode)
2331{
2332 fattr->cf_uid = inode->i_uid;
2333 fattr->cf_gid = inode->i_gid;
2334 fattr->cf_mode = inode->i_mode;
2335 fattr->cf_dacls = NULL;
2336
67d1c432 2337 fattr->cf_acls = get_acl(inode, ACL_TYPE_ACCESS);
3d47e546 2338 if (S_ISDIR(inode->i_mode))
67d1c432 2339 fattr->cf_dacls = get_acl(inode, ACL_TYPE_DEFAULT);
3d47e546
NJ		 2340}
2341
e2f34481
NJ		 2342/**
2343 * smb2_open() - handler for smb file open request
2344 * @work: smb work containing request buffer
2345 *
2346 * Return: 0 on success, otherwise error
2347 */
2348int smb2_open(struct ksmbd_work *work)
2349{
2350 struct ksmbd_conn *conn = work->conn;
2351 struct ksmbd_session *sess = work->sess;
2352 struct ksmbd_tree_connect *tcon = work->tcon;
2353 struct smb2_create_req *req;
2354 struct smb2_create_rsp *rsp, *rsp_org;
2355 struct path path;
2356 struct ksmbd_share_config *share = tcon->share_conf;
2357 struct ksmbd_file *fp = NULL;
2358 struct file *filp = NULL;
2359 struct kstat stat;
2360 struct create_context *context;
2361 struct lease_ctx_info *lc = NULL;
2362 struct create_ea_buf_req *ea_buf = NULL;
2363 struct oplock_info *opinfo;
2364 __le32 *next_ptr = NULL;
6c5e36d1 2365 int req_op_level = 0, open_flags = 0, may_flags = 0, file_info = 0;
e2f34481
NJ		 2366 int rc = 0, len = 0;
2367 int contxt_cnt = 0, query_disk_id = 0;
2368 int maximal_access_ctxt = 0, posix_ctxt = 0;
2369 int s_type = 0;
2370 int next_off = 0;
2371 char *name = NULL;
2372 char *stream_name = NULL;
2373 bool file_present = false, created = false, already_permitted = false;
e2f34481
NJ		 2374 int share_ret, need_truncate = 0;
2375 u64 time;
2376 umode_t posix_mode = 0;
2377 __le32 daccess, maximal_access = 0;
2378
e5066499 2379 rsp_org = work->response_buf;
e2f34481
NJ		 2380 WORK_BUFFERS(work, req, rsp);
2381
2382 if (req->hdr.NextCommand && !work->next_smb2_rcv_hdr_off &&
64b39f4a 2383 (req->hdr.Flags & SMB2_FLAGS_RELATED_OPERATIONS)) {
e2f34481
NJ		 2384 ksmbd_debug(SMB, "invalid flag in chained command\n");
2385 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
2386 smb2_set_err_rsp(work);
2387 return -EINVAL;
2388 }
2389
2390 if (test_share_config_flag(share, KSMBD_SHARE_FLAG_PIPE)) {
2391 ksmbd_debug(SMB, "IPC pipe create request\n");
2392 return create_smb2_pipe(work);
2393 }
2394
2395 if (req->NameLength) {
2396 if ((req->CreateOptions & FILE_DIRECTORY_FILE_LE) &&
64b39f4a 2397 *(char *)req->Buffer == '\\') {
bde1694a 2398 pr_err("not allow directory name included leading slash\n");
e2f34481
NJ		 2399 rc = -EINVAL;
2400 goto err_out1;
2401 }
2402
2403 name = smb2_get_name(share,
2404 req->Buffer,
2405 le16_to_cpu(req->NameLength),
2406 work->conn->local_nls);
2407 if (IS_ERR(name)) {
2408 rc = PTR_ERR(name);
2409 if (rc != -ENOMEM)
2410 rc = -ENOENT;
2411 goto err_out1;
2412 }
2413
2414 ksmbd_debug(SMB, "converted name = %s\n", name);
2415 if (strchr(name, ':')) {
2416 if (!test_share_config_flag(work->tcon->share_conf,
64b39f4a 2417 KSMBD_SHARE_FLAG_STREAMS)) {
e2f34481
NJ		 2418 rc = -EBADF;
2419 goto err_out1;
2420 }
2421 rc = parse_stream_name(name, &stream_name, &s_type);
2422 if (rc < 0)
2423 goto err_out1;
2424 }
2425
2426 rc = ksmbd_validate_filename(name);
2427 if (rc < 0)
2428 goto err_out1;
2429
2430 if (ksmbd_share_veto_filename(share, name)) {
2431 rc = -ENOENT;
2432 ksmbd_debug(SMB, "Reject open(), vetoed file: %s\n",
070fb21e 2433 name);
e2f34481
NJ		 2434 goto err_out1;
2435 }
2436 } else {
2437 len = strlen(share->path);
2438 ksmbd_debug(SMB, "share path len %d\n", len);
2439 name = kmalloc(len + 1, GFP_KERNEL);
2440 if (!name) {
2441 rsp->hdr.Status = STATUS_NO_MEMORY;
2442 rc = -ENOMEM;
2443 goto err_out1;
2444 }
2445
2446 memcpy(name, share->path, len);
2447 *(name + len) = '\0';
2448 }
2449
2450 req_op_level = req->RequestedOplockLevel;
73f9dad5 2451 if (req_op_level == SMB2_OPLOCK_LEVEL_LEASE)
e2f34481 2452 lc = parse_lease_state(req);
e2f34481 2453
64b39f4a 2454 if (le32_to_cpu(req->ImpersonationLevel) > le32_to_cpu(IL_DELEGATE_LE)) {
bde1694a
NJ		 2455 pr_err("Invalid impersonationlevel : 0x%x\n",
2456 le32_to_cpu(req->ImpersonationLevel));
e2f34481
NJ		 2457 rc = -EIO;
2458 rsp->hdr.Status = STATUS_BAD_IMPERSONATION_LEVEL;
2459 goto err_out1;
2460 }
2461
2462 if (req->CreateOptions && !(req->CreateOptions & CREATE_OPTIONS_MASK)) {
bde1694a
NJ		 2463 pr_err("Invalid create options : 0x%x\n",
2464 le32_to_cpu(req->CreateOptions));
e2f34481
NJ		 2465 rc = -EINVAL;
2466 goto err_out1;
2467 } else {
e2f34481 2468 if (req->CreateOptions & FILE_SEQUENTIAL_ONLY_LE &&
64b39f4a 2469 req->CreateOptions & FILE_RANDOM_ACCESS_LE)
e2f34481
NJ		 2470 req->CreateOptions = ~(FILE_SEQUENTIAL_ONLY_LE);
2471
070fb21e
NJ		 2472 if (req->CreateOptions &
2473 (FILE_OPEN_BY_FILE_ID_LE | CREATE_TREE_CONNECTION |
2474 FILE_RESERVE_OPFILTER_LE)) {
e2f34481
NJ		 2475 rc = -EOPNOTSUPP;
2476 goto err_out1;
2477 }
2478
2479 if (req->CreateOptions & FILE_DIRECTORY_FILE_LE) {
2480 if (req->CreateOptions & FILE_NON_DIRECTORY_FILE_LE) {
2481 rc = -EINVAL;
2482 goto err_out1;
64b39f4a 2483 } else if (req->CreateOptions & FILE_NO_COMPRESSION_LE) {
e2f34481 2484 req->CreateOptions = ~(FILE_NO_COMPRESSION_LE);
64b39f4a 2485 }
e2f34481
NJ		 2486 }
2487 }
2488
2489 if (le32_to_cpu(req->CreateDisposition) >
070fb21e 2490 le32_to_cpu(FILE_OVERWRITE_IF_LE)) {
bde1694a
NJ		 2491 pr_err("Invalid create disposition : 0x%x\n",
2492 le32_to_cpu(req->CreateDisposition));
e2f34481
NJ		 2493 rc = -EINVAL;
2494 goto err_out1;
2495 }
2496
2497 if (!(req->DesiredAccess & DESIRED_ACCESS_MASK)) {
bde1694a
NJ		 2498 pr_err("Invalid desired access : 0x%x\n",
2499 le32_to_cpu(req->DesiredAccess));
e2f34481
NJ		 2500 rc = -EACCES;
2501 goto err_out1;
2502 }
2503
64b39f4a 2504 if (req->FileAttributes && !(req->FileAttributes & ATTR_MASK_LE)) {
bde1694a
NJ		 2505 pr_err("Invalid file attribute : 0x%x\n",
2506 le32_to_cpu(req->FileAttributes));
e2f34481
NJ		 2507 rc = -EINVAL;
2508 goto err_out1;
2509 }
2510
2511 if (req->CreateContextsOffset) {
2512 /* Parse non-durable handle create contexts */
2513 context = smb2_find_context_vals(req, SMB2_CREATE_EA_BUFFER);
2514 if (IS_ERR(context)) {
2515 rc = check_context_err(context, SMB2_CREATE_EA_BUFFER);
2516 if (rc < 0)
2517 goto err_out1;
2518 } else {
2519 ea_buf = (struct create_ea_buf_req *)context;
2520 if (req->CreateOptions & FILE_NO_EA_KNOWLEDGE_LE) {
2521 rsp->hdr.Status = STATUS_ACCESS_DENIED;
2522 rc = -EACCES;
2523 goto err_out1;
2524 }
2525 }
2526
2527 context = smb2_find_context_vals(req,
070fb21e 2528 SMB2_CREATE_QUERY_MAXIMAL_ACCESS_REQUEST);
e2f34481
NJ		 2529 if (IS_ERR(context)) {
2530 rc = check_context_err(context,
070fb21e 2531 SMB2_CREATE_QUERY_MAXIMAL_ACCESS_REQUEST);
e2f34481
NJ		 2532 if (rc < 0)
2533 goto err_out1;
2534 } else {
2535 ksmbd_debug(SMB,
070fb21e 2536 "get query maximal access context\n");
e2f34481
NJ		 2537 maximal_access_ctxt = 1;
2538 }
2539
2540 context = smb2_find_context_vals(req,
070fb21e 2541 SMB2_CREATE_TIMEWARP_REQUEST);
e2f34481
NJ		 2542 if (IS_ERR(context)) {
2543 rc = check_context_err(context,
070fb21e 2544 SMB2_CREATE_TIMEWARP_REQUEST);
e2f34481
NJ		 2545 if (rc < 0)
2546 goto err_out1;
2547 } else {
2548 ksmbd_debug(SMB, "get timewarp context\n");
2549 rc = -EBADF;
2550 goto err_out1;
2551 }
2552
2553 if (tcon->posix_extensions) {
2554 context = smb2_find_context_vals(req,
070fb21e 2555 SMB2_CREATE_TAG_POSIX);
e2f34481
NJ		 2556 if (IS_ERR(context)) {
2557 rc = check_context_err(context,
070fb21e 2558 SMB2_CREATE_TAG_POSIX);
e2f34481
NJ		 2559 if (rc < 0)
2560 goto err_out1;
2561 } else {
2562 struct create_posix *posix =
2563 (struct create_posix *)context;
2564 ksmbd_debug(SMB, "get posix context\n");
2565
2566 posix_mode = le32_to_cpu(posix->Mode);
2567 posix_ctxt = 1;
2568 }
2569 }
2570 }
2571
2572 if (ksmbd_override_fsids(work)) {
2573 rc = -ENOMEM;
2574 goto err_out1;
2575 }
2576
2577 if (req->CreateOptions & FILE_DELETE_ON_CLOSE_LE) {
2578 /*
2579 * On delete request, instead of following up, need to
2580 * look the current entity
2581 */
2582 rc = ksmbd_vfs_kern_path(name, 0, &path, 1);
2583 if (!rc) {
2584 /*
2585 * If file exists with under flags, return access
2586 * denied error.
2587 */
2588 if (req->CreateDisposition == FILE_OVERWRITE_IF_LE ||
64b39f4a 2589 req->CreateDisposition == FILE_OPEN_IF_LE) {
e2f34481
NJ		 2590 rc = -EACCES;
2591 path_put(&path);
2592 goto err_out;
2593 }
2594
64b39f4a 2595 if (!test_tree_conn_flag(tcon, KSMBD_TREE_CONN_FLAG_WRITABLE)) {
e2f34481 2596 ksmbd_debug(SMB,
070fb21e 2597 "User does not have write permission\n");
e2f34481
NJ		 2598 rc = -EACCES;
2599 path_put(&path);
2600 goto err_out;
2601 }
2602 }
2603 } else {
2604 if (test_share_config_flag(work->tcon->share_conf,
64b39f4a 2605 KSMBD_SHARE_FLAG_FOLLOW_SYMLINKS)) {
e2f34481
NJ		 2606 /*
2607 * Use LOOKUP_FOLLOW to follow the path of
2608 * symlink in path buildup
2609 */
2610 rc = ksmbd_vfs_kern_path(name, LOOKUP_FOLLOW, &path, 1);
2611 if (rc) { /* Case for broken link ?*/
2612 rc = ksmbd_vfs_kern_path(name, 0, &path, 1);
2613 }
2614 } else {
2615 rc = ksmbd_vfs_kern_path(name, 0, &path, 1);
2616 if (!rc && d_is_symlink(path.dentry)) {
2617 rc = -EACCES;
2618 path_put(&path);
2619 goto err_out;
2620 }
2621 }
2622 }
2623
2624 if (rc) {
2625 if (rc == -EACCES) {
2626 ksmbd_debug(SMB,
070fb21e 2627 "User does not have right permission\n");
e2f34481
NJ		 2628 goto err_out;
2629 }
2630 ksmbd_debug(SMB, "can not get linux path for %s, rc = %d\n",
070fb21e 2631 name, rc);
e2f34481
NJ		 2632 rc = 0;
2633 } else {
2634 file_present = true;
2635 generic_fillattr(&init_user_ns, d_inode(path.dentry), &stat);
2636 }
2637 if (stream_name) {
2638 if (req->CreateOptions & FILE_DIRECTORY_FILE_LE) {
2639 if (s_type == DATA_STREAM) {
2640 rc = -EIO;
2641 rsp->hdr.Status = STATUS_NOT_A_DIRECTORY;
2642 }
2643 } else {
2644 if (S_ISDIR(stat.mode) && s_type == DATA_STREAM) {
2645 rc = -EIO;
2646 rsp->hdr.Status = STATUS_FILE_IS_A_DIRECTORY;
2647 }
2648 }
2649
2650 if (req->CreateOptions & FILE_DIRECTORY_FILE_LE &&
64b39f4a 2651 req->FileAttributes & ATTR_NORMAL_LE) {
e2f34481
NJ		 2652 rsp->hdr.Status = STATUS_NOT_A_DIRECTORY;
2653 rc = -EIO;
2654 }
2655
2656 if (rc < 0)
2657 goto err_out;
2658 }
2659
64b39f4a
NJ		 2660 if (file_present && req->CreateOptions & FILE_NON_DIRECTORY_FILE_LE &&
2661 S_ISDIR(stat.mode) && !(req->CreateOptions & FILE_DELETE_ON_CLOSE_LE)) {
e2f34481 2662 ksmbd_debug(SMB, "open() argument is a directory: %s, %x\n",
070fb21e 2663 name, req->CreateOptions);
e2f34481
NJ		 2664 rsp->hdr.Status = STATUS_FILE_IS_A_DIRECTORY;
2665 rc = -EIO;
2666 goto err_out;
2667 }
2668
2669 if (file_present && (req->CreateOptions & FILE_DIRECTORY_FILE_LE) &&
64b39f4a
NJ		 2670 !(req->CreateDisposition == FILE_CREATE_LE) &&
2671 !S_ISDIR(stat.mode)) {
e2f34481
NJ		 2672 rsp->hdr.Status = STATUS_NOT_A_DIRECTORY;
2673 rc = -EIO;
2674 goto err_out;
2675 }
2676
2677 if (!stream_name && file_present &&
64b39f4a 2678 req->CreateDisposition == FILE_CREATE_LE) {
e2f34481
NJ		 2679 rc = -EEXIST;
2680 goto err_out;
2681 }
2682
e2f34481
NJ		 2683 daccess = smb_map_generic_desired_access(req->DesiredAccess);
2684
2685 if (file_present && !(req->CreateOptions & FILE_DELETE_ON_CLOSE_LE)) {
2686 rc = smb_check_perm_dacl(conn, path.dentry, &daccess,
070fb21e 2687 sess->user->uid);
e2f34481
NJ		 2688 if (rc)
2689 goto err_out;
2690 }
2691
2692 if (daccess & FILE_MAXIMAL_ACCESS_LE) {
2693 if (!file_present) {
2694 daccess = cpu_to_le32(GENERIC_ALL_FLAGS);
2695 } else {
2696 rc = ksmbd_vfs_query_maximal_access(path.dentry,
2697 &daccess);
2698 if (rc)
2699 goto err_out;
2700 already_permitted = true;
2701 }
2702 maximal_access = daccess;
2703 }
2704
070fb21e 2705 open_flags = smb2_create_open_flags(file_present, daccess,
6c5e36d1
HL		 2706 req->CreateDisposition,
2707 &may_flags);
e2f34481
NJ		 2708
2709 if (!test_tree_conn_flag(tcon, KSMBD_TREE_CONN_FLAG_WRITABLE)) {
2710 if (open_flags & O_CREAT) {
2711 ksmbd_debug(SMB,
070fb21e 2712 "User does not have write permission\n");
e2f34481
NJ		 2713 rc = -EACCES;
2714 goto err_out;
2715 }
2716 }
2717
2718 /*create file if not present */
2719 if (!file_present) {
2720 rc = smb2_creat(work, &path, name, open_flags, posix_mode,
070fb21e 2721 req->CreateOptions & FILE_DIRECTORY_FILE_LE);
e2f34481
NJ		 2722 if (rc)
2723 goto err_out;
2724
2725 created = true;
2726 if (ea_buf) {
2727 rc = smb2_set_ea(&ea_buf->ea, &path);
2728 if (rc == -EOPNOTSUPP)
2729 rc = 0;
2730 else if (rc)
2731 goto err_out;
2732 }
2733 } else if (!already_permitted) {
e2f34481
NJ		 2734 /* FILE_READ_ATTRIBUTE is allowed without inode_permission,
2735 * because execute(search) permission on a parent directory,
2736 * is already granted.
2737 */
64b39f4a 2738 if (daccess & ~(FILE_READ_ATTRIBUTES_LE | FILE_READ_CONTROL_LE)) {
6c5e36d1
HL		 2739 rc = inode_permission(&init_user_ns,
2740 d_inode(path.dentry),
2741 may_flags);
ff1d5727 2742 if (rc)
e2f34481 2743 goto err_out;
6c5e36d1
HL		 2744
2745 if ((daccess & FILE_DELETE_LE) ||
2746 (req->CreateOptions & FILE_DELETE_ON_CLOSE_LE)) {
2747 rc = ksmbd_vfs_may_delete(path.dentry);
2748 if (rc)
2749 goto err_out;
2750 }
e2f34481
NJ		 2751 }
2752 }
2753
2754 rc = ksmbd_query_inode_status(d_inode(path.dentry->d_parent));
2755 if (rc == KSMBD_INODE_STATUS_PENDING_DELETE) {
2756 rc = -EBUSY;
2757 goto err_out;
2758 }
2759
2760 rc = 0;
2761 filp = dentry_open(&path, open_flags, current_cred());
2762 if (IS_ERR(filp)) {
2763 rc = PTR_ERR(filp);
bde1694a 2764 pr_err("dentry open for dir failed, rc %d\n", rc);
e2f34481
NJ		 2765 goto err_out;
2766 }
2767
2768 if (file_present) {
2769 if (!(open_flags & O_TRUNC))
2770 file_info = FILE_OPENED;
2771 else
2772 file_info = FILE_OVERWRITTEN;
2773
070fb21e
NJ		 2774 if ((req->CreateDisposition & FILE_CREATE_MASK_LE) ==
2775 FILE_SUPERSEDE_LE)
e2f34481 2776 file_info = FILE_SUPERSEDED;
64b39f4a 2777 } else if (open_flags & O_CREAT) {
e2f34481 2778 file_info = FILE_CREATED;
64b39f4a 2779 }
e2f34481
NJ		 2780
2781 ksmbd_vfs_set_fadvise(filp, req->CreateOptions);
2782
2783 /* Obtain Volatile-ID */
2784 fp = ksmbd_open_fd(work, filp);
2785 if (IS_ERR(fp)) {
2786 fput(filp);
2787 rc = PTR_ERR(fp);
2788 fp = NULL;
2789 goto err_out;
2790 }
2791
2792 /* Get Persistent-ID */
2793 ksmbd_open_durable_fd(fp);
2794 if (!HAS_FILE_ID(fp->persistent_id)) {
2795 rc = -ENOMEM;
2796 goto err_out;
2797 }
2798
2799 fp->filename = name;
2800 fp->cdoption = req->CreateDisposition;
2801 fp->daccess = daccess;
2802 fp->saccess = req->ShareAccess;
2803 fp->coption = req->CreateOptions;
2804
2805 /* Set default windows and posix acls if creating new file */
2806 if (created) {
2807 int posix_acl_rc;
fba08fa0 2808 struct inode *inode = d_inode(path.dentry);
e2f34481 2809
fba08fa0 2810 posix_acl_rc = ksmbd_vfs_inherit_posix_acl(inode, d_inode(path.dentry->d_parent));
e2f34481
NJ		 2811 if (posix_acl_rc)
2812 ksmbd_debug(SMB, "inherit posix acl failed : %d\n", posix_acl_rc);
2813
2814 if (test_share_config_flag(work->tcon->share_conf,
64b39f4a 2815 KSMBD_SHARE_FLAG_ACL_XATTR)) {
e2f34481 2816 rc = smb_inherit_dacl(conn, path.dentry, sess->user->uid,
070fb21e 2817 sess->user->gid);
e2f34481
NJ		 2818 }
2819
2820 if (rc) {
2821 rc = smb2_create_sd_buffer(work, req, path.dentry);
2822 if (rc) {
2823 if (posix_acl_rc)
2824 ksmbd_vfs_set_init_posix_acl(inode);
2825
2826 if (test_share_config_flag(work->tcon->share_conf,
64b39f4a 2827 KSMBD_SHARE_FLAG_ACL_XATTR)) {
e2f34481
NJ		 2828 struct smb_fattr fattr;
2829 struct smb_ntsd *pntsd;
3d47e546 2830 int pntsd_size, ace_num = 0;
e2f34481 2831
3d47e546 2832 ksmbd_acls_fattr(&fattr, inode);
e6b1059f
MM		 2833 if (fattr.cf_acls)
2834 ace_num = fattr.cf_acls->a_count;
3d47e546
NJ		 2835 if (fattr.cf_dacls)
2836 ace_num += fattr.cf_dacls->a_count;
e2f34481
NJ		 2837
2838 pntsd = kmalloc(sizeof(struct smb_ntsd) +
64b39f4a 2839 sizeof(struct smb_sid) * 3 +
e2f34481 2840 sizeof(struct smb_acl) +
64b39f4a 2841 sizeof(struct smb_ace) * ace_num * 2,
e2f34481
NJ		 2842 GFP_KERNEL);
2843 if (!pntsd)
2844 goto err_out;
2845
2846 rc = build_sec_desc(pntsd, NULL,
070fb21e
NJ		 2847 OWNER_SECINFO |
2848 GROUP_SECINFO |
2849 DACL_SECINFO,
2850 &pntsd_size, &fattr);
e2f34481
NJ		 2851 posix_acl_release(fattr.cf_acls);
2852 posix_acl_release(fattr.cf_dacls);
2853
2854 rc = ksmbd_vfs_set_sd_xattr(conn,
070fb21e
NJ		 2855 path.dentry,
2856 pntsd,
2857 pntsd_size);
3d47e546 2858 kfree(pntsd);
e2f34481 2859 if (rc)
bde1694a
NJ		 2860 pr_err("failed to store ntacl in xattr : %d\n",
2861 rc);
e2f34481
NJ		 2862 }
2863 }
2864 }
2865 rc = 0;
2866 }
2867
2868 if (stream_name) {
2869 rc = smb2_set_stream_name_xattr(&path,
2870 fp,
2871 stream_name,
2872 s_type);
2873 if (rc)
2874 goto err_out;
2875 file_info = FILE_CREATED;
2876 }
2877
2878 fp->attrib_only = !(req->DesiredAccess & ~(FILE_READ_ATTRIBUTES_LE |
2879 FILE_WRITE_ATTRIBUTES_LE | FILE_SYNCHRONIZE_LE));
64b39f4a
NJ		 2880 if (!S_ISDIR(file_inode(filp)->i_mode) && open_flags & O_TRUNC &&
2881 !fp->attrib_only && !stream_name) {
e2f34481
NJ		 2882 smb_break_all_oplock(work, fp);
2883 need_truncate = 1;
2884 }
2885
2886 /* fp should be searchable through ksmbd_inode.m_fp_list
2887 * after daccess, saccess, attrib_only, and stream are
2888 * initialized.
2889 */
2890 write_lock(&fp->f_ci->m_lock);
2891 list_add(&fp->node, &fp->f_ci->m_fp_list);
2892 write_unlock(&fp->f_ci->m_lock);
2893
2894 rc = ksmbd_vfs_getattr(&path, &stat);
2895 if (rc) {
2896 generic_fillattr(&init_user_ns, d_inode(path.dentry), &stat);
2897 rc = 0;
2898 }
2899
2900 /* Check delete pending among previous fp before oplock break */
2901 if (ksmbd_inode_pending_delete(fp)) {
2902 rc = -EBUSY;
2903 goto err_out;
2904 }
2905
2906 share_ret = ksmbd_smb_check_shared_mode(fp->filp, fp);
64b39f4a
NJ		 2907 if (!test_share_config_flag(work->tcon->share_conf, KSMBD_SHARE_FLAG_OPLOCKS) ||
2908 (req_op_level == SMB2_OPLOCK_LEVEL_LEASE &&
2909 !(conn->vals->capabilities & SMB2_GLOBAL_CAP_LEASING))) {
e2f34481
NJ		 2910 if (share_ret < 0 && !S_ISDIR(FP_INODE(fp)->i_mode)) {
2911 rc = share_ret;
2912 goto err_out;
2913 }
2914 } else {
2915 if (req_op_level == SMB2_OPLOCK_LEVEL_LEASE) {
2916 req_op_level = smb2_map_lease_to_oplock(lc->req_state);
2917 ksmbd_debug(SMB,
070fb21e
NJ		 2918 "lease req for(%s) req oplock state 0x%x, lease state 0x%x\n",
2919 name, req_op_level, lc->req_state);
e2f34481
NJ		 2920 rc = find_same_lease_key(sess, fp->f_ci, lc);
2921 if (rc)
2922 goto err_out;
2923 } else if (open_flags == O_RDONLY &&
64b39f4a
NJ		 2924 (req_op_level == SMB2_OPLOCK_LEVEL_BATCH ||
2925 req_op_level == SMB2_OPLOCK_LEVEL_EXCLUSIVE))
e2f34481
NJ		 2926 req_op_level = SMB2_OPLOCK_LEVEL_II;
2927
2928 rc = smb_grant_oplock(work, req_op_level,
2929 fp->persistent_id, fp,
2930 le32_to_cpu(req->hdr.Id.SyncId.TreeId),
2931 lc, share_ret);
2932 if (rc < 0)
2933 goto err_out;
2934 }
2935
2936 if (req->CreateOptions & FILE_DELETE_ON_CLOSE_LE)
2937 ksmbd_fd_set_delete_on_close(fp, file_info);
2938
2939 if (need_truncate) {
2940 rc = smb2_create_truncate(&path);
2941 if (rc)
2942 goto err_out;
2943 }
2944
2945 if (req->CreateContextsOffset) {
2946 struct create_alloc_size_req *az_req;
2947
070fb21e
NJ		 2948 az_req = (struct create_alloc_size_req *)smb2_find_context_vals(req,
2949 SMB2_CREATE_ALLOCATION_SIZE);
e2f34481
NJ		 2950 if (IS_ERR(az_req)) {
2951 rc = check_context_err(az_req,
070fb21e 2952 SMB2_CREATE_ALLOCATION_SIZE);
e2f34481
NJ		 2953 if (rc < 0)
2954 goto err_out;
2955 } else {
2956 loff_t alloc_size = le64_to_cpu(az_req->AllocationSize);
2957 int err;
2958
2959 ksmbd_debug(SMB,
070fb21e
NJ		 2960 "request smb2 create allocate size : %llu\n",
2961 alloc_size);
e8c06191
NJ		 2962 smb_break_all_levII_oplock(work, fp, 1);
2963 err = vfs_fallocate(fp->filp, FALLOC_FL_KEEP_SIZE, 0,
2964 alloc_size);
e2f34481
NJ		 2965 if (err < 0)
2966 ksmbd_debug(SMB,
e8c06191 2967 "vfs_fallocate is failed : %d\n",
070fb21e 2968 err);
e2f34481
NJ		 2969 }
2970
64b39f4a 2971 context = smb2_find_context_vals(req, SMB2_CREATE_QUERY_ON_DISK_ID);
e2f34481 2972 if (IS_ERR(context)) {
64b39f4a 2973 rc = check_context_err(context, SMB2_CREATE_QUERY_ON_DISK_ID);
e2f34481
NJ		 2974 if (rc < 0)
2975 goto err_out;
2976 } else {
2977 ksmbd_debug(SMB, "get query on disk id context\n");
2978 query_disk_id = 1;
2979 }
2980 }
2981
2982 if (stat.result_mask & STATX_BTIME)
2983 fp->create_time = ksmbd_UnixTimeToNT(stat.btime);
2984 else
2985 fp->create_time = ksmbd_UnixTimeToNT(stat.ctime);
2986 if (req->FileAttributes || fp->f_ci->m_fattr == 0)
070fb21e
NJ		 2987 fp->f_ci->m_fattr =
2988 cpu_to_le32(smb2_get_dos_mode(&stat, le32_to_cpu(req->FileAttributes)));
e2f34481
NJ		 2989
2990 if (!created)
2991 smb2_update_xattrs(tcon, &path, fp);
2992 else
2993 smb2_new_xattrs(tcon, &path, fp);
2994
2995 memcpy(fp->client_guid, conn->ClientGUID, SMB2_CLIENT_GUID_SIZE);
2996
e2f34481
NJ		 2997 generic_fillattr(&init_user_ns, FP_INODE(fp), &stat);
2998
2999 rsp->StructureSize = cpu_to_le16(89);
3000 rcu_read_lock();
3001 opinfo = rcu_dereference(fp->f_opinfo);
3002 rsp->OplockLevel = opinfo != NULL ? opinfo->level : 0;
3003 rcu_read_unlock();
3004 rsp->Reserved = 0;
3005 rsp->CreateAction = cpu_to_le32(file_info);
3006 rsp->CreationTime = cpu_to_le64(fp->create_time);
3007 time = ksmbd_UnixTimeToNT(stat.atime);
3008 rsp->LastAccessTime = cpu_to_le64(time);
3009 time = ksmbd_UnixTimeToNT(stat.mtime);
3010 rsp->LastWriteTime = cpu_to_le64(time);
3011 time = ksmbd_UnixTimeToNT(stat.ctime);
3012 rsp->ChangeTime = cpu_to_le64(time);
3013 rsp->AllocationSize = S_ISDIR(stat.mode) ? 0 :
3014 cpu_to_le64(stat.blocks << 9);
3015 rsp->EndofFile = S_ISDIR(stat.mode) ? 0 : cpu_to_le64(stat.size);
3016 rsp->FileAttributes = fp->f_ci->m_fattr;
3017
3018 rsp->Reserved2 = 0;
3019
3020 rsp->PersistentFileId = cpu_to_le64(fp->persistent_id);
3021 rsp->VolatileFileId = cpu_to_le64(fp->volatile_id);
3022
3023 rsp->CreateContextsOffset = 0;
3024 rsp->CreateContextsLength = 0;
3025 inc_rfc1001_len(rsp_org, 88); /* StructureSize - 1*/
3026
3027 /* If lease is request send lease context response */
3028 if (opinfo && opinfo->is_lease) {
3029 struct create_context *lease_ccontext;
3030
3031 ksmbd_debug(SMB, "lease granted on(%s) lease state 0x%x\n",
070fb21e 3032 name, opinfo->o_lease->state);
e2f34481
NJ		 3033 rsp->OplockLevel = SMB2_OPLOCK_LEVEL_LEASE;
3034
3035 lease_ccontext = (struct create_context *)rsp->Buffer;
3036 contxt_cnt++;
3037 create_lease_buf(rsp->Buffer, opinfo->o_lease);
3038 le32_add_cpu(&rsp->CreateContextsLength,
3039 conn->vals->create_lease_size);
3040 inc_rfc1001_len(rsp_org, conn->vals->create_lease_size);
3041 next_ptr = &lease_ccontext->Next;
3042 next_off = conn->vals->create_lease_size;
3043 }
3044
e2f34481
NJ		 3045 if (maximal_access_ctxt) {
3046 struct create_context *mxac_ccontext;
3047
3048 if (maximal_access == 0)
3049 ksmbd_vfs_query_maximal_access(path.dentry,
3050 &maximal_access);
3051 mxac_ccontext = (struct create_context *)(rsp->Buffer +
3052 le32_to_cpu(rsp->CreateContextsLength));
3053 contxt_cnt++;
3054 create_mxac_rsp_buf(rsp->Buffer +
3055 le32_to_cpu(rsp->CreateContextsLength),
3056 le32_to_cpu(maximal_access));
3057 le32_add_cpu(&rsp->CreateContextsLength,
3058 conn->vals->create_mxac_size);
3059 inc_rfc1001_len(rsp_org, conn->vals->create_mxac_size);
3060 if (next_ptr)
3061 *next_ptr = cpu_to_le32(next_off);
3062 next_ptr = &mxac_ccontext->Next;
3063 next_off = conn->vals->create_mxac_size;
3064 }
3065
3066 if (query_disk_id) {
3067 struct create_context *disk_id_ccontext;
3068
3069 disk_id_ccontext = (struct create_context *)(rsp->Buffer +
3070 le32_to_cpu(rsp->CreateContextsLength));
3071 contxt_cnt++;
3072 create_disk_id_rsp_buf(rsp->Buffer +
3073 le32_to_cpu(rsp->CreateContextsLength),
3074 stat.ino, tcon->id);
3075 le32_add_cpu(&rsp->CreateContextsLength,
3076 conn->vals->create_disk_id_size);
3077 inc_rfc1001_len(rsp_org, conn->vals->create_disk_id_size);
3078 if (next_ptr)
3079 *next_ptr = cpu_to_le32(next_off);
3080 next_ptr = &disk_id_ccontext->Next;
3081 next_off = conn->vals->create_disk_id_size;
3082 }
3083
3084 if (posix_ctxt) {
e2f34481
NJ		 3085 contxt_cnt++;
3086 create_posix_rsp_buf(rsp->Buffer +
3087 le32_to_cpu(rsp->CreateContextsLength),
3088 fp);
3089 le32_add_cpu(&rsp->CreateContextsLength,
3090 conn->vals->create_posix_size);
3091 inc_rfc1001_len(rsp_org, conn->vals->create_posix_size);
3092 if (next_ptr)
3093 *next_ptr = cpu_to_le32(next_off);
3094 }
3095
3096 if (contxt_cnt > 0) {
3097 rsp->CreateContextsOffset =
3098 cpu_to_le32(offsetof(struct smb2_create_rsp, Buffer)
3099 - 4);
3100 }
3101
3102err_out:
3103 if (file_present || created)
3104 path_put(&path);
3105 ksmbd_revert_fsids(work);
3106err_out1:
3107 if (rc) {
3108 if (rc == -EINVAL)
3109 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
3110 else if (rc == -EOPNOTSUPP)
3111 rsp->hdr.Status = STATUS_NOT_SUPPORTED;
ff1d5727 3112 else if (rc == -EACCES || rc == -ESTALE)
e2f34481
NJ		 3113 rsp->hdr.Status = STATUS_ACCESS_DENIED;
3114 else if (rc == -ENOENT)
3115 rsp->hdr.Status = STATUS_OBJECT_NAME_INVALID;
3116 else if (rc == -EPERM)
3117 rsp->hdr.Status = STATUS_SHARING_VIOLATION;
3118 else if (rc == -EBUSY)
3119 rsp->hdr.Status = STATUS_DELETE_PENDING;
3120 else if (rc == -EBADF)
3121 rsp->hdr.Status = STATUS_OBJECT_NAME_NOT_FOUND;
3122 else if (rc == -ENOEXEC)
3123 rsp->hdr.Status = STATUS_DUPLICATE_OBJECTID;
3124 else if (rc == -ENXIO)
3125 rsp->hdr.Status = STATUS_NO_SUCH_DEVICE;
3126 else if (rc == -EEXIST)
3127 rsp->hdr.Status = STATUS_OBJECT_NAME_COLLISION;
3128 else if (rc == -EMFILE)
3129 rsp->hdr.Status = STATUS_INSUFFICIENT_RESOURCES;
3130 if (!rsp->hdr.Status)
3131 rsp->hdr.Status = STATUS_UNEXPECTED_IO_ERROR;
3132
3133 if (!fp || !fp->filename)
3134 kfree(name);
3135 if (fp)
3136 ksmbd_fd_put(work, fp);
3137 smb2_set_err_rsp(work);
3138 ksmbd_debug(SMB, "Error response: %x\n", rsp->hdr.Status);
3139 }
3140
3141 kfree(lc);
3142
3143 return 0;
3144}
3145
3146static int readdir_info_level_struct_sz(int info_level)
3147{
3148 switch (info_level) {
3149 case FILE_FULL_DIRECTORY_INFORMATION:
3150 return sizeof(struct file_full_directory_info);
3151 case FILE_BOTH_DIRECTORY_INFORMATION:
3152 return sizeof(struct file_both_directory_info);
3153 case FILE_DIRECTORY_INFORMATION:
3154 return sizeof(struct file_directory_info);
3155 case FILE_NAMES_INFORMATION:
3156 return sizeof(struct file_names_info);
3157 case FILEID_FULL_DIRECTORY_INFORMATION:
3158 return sizeof(struct file_id_full_dir_info);
3159 case FILEID_BOTH_DIRECTORY_INFORMATION:
3160 return sizeof(struct file_id_both_directory_info);
3161 case SMB_FIND_FILE_POSIX_INFO:
3162 return sizeof(struct smb2_posix_info);
3163 default:
3164 return -EOPNOTSUPP;
3165 }
3166}
3167
3168static int dentry_name(struct ksmbd_dir_info *d_info, int info_level)
3169{
3170 switch (info_level) {
3171 case FILE_FULL_DIRECTORY_INFORMATION:
3172 {
3173 struct file_full_directory_info *ffdinfo;
3174
3175 ffdinfo = (struct file_full_directory_info *)d_info->rptr;
3176 d_info->rptr += le32_to_cpu(ffdinfo->NextEntryOffset);
3177 d_info->name = ffdinfo->FileName;
3178 d_info->name_len = le32_to_cpu(ffdinfo->FileNameLength);
3179 return 0;
3180 }
3181 case FILE_BOTH_DIRECTORY_INFORMATION:
3182 {
3183 struct file_both_directory_info *fbdinfo;
3184
3185 fbdinfo = (struct file_both_directory_info *)d_info->rptr;
3186 d_info->rptr += le32_to_cpu(fbdinfo->NextEntryOffset);
3187 d_info->name = fbdinfo->FileName;
3188 d_info->name_len = le32_to_cpu(fbdinfo->FileNameLength);
3189 return 0;
3190 }
3191 case FILE_DIRECTORY_INFORMATION:
3192 {
3193 struct file_directory_info *fdinfo;
3194
3195 fdinfo = (struct file_directory_info *)d_info->rptr;
3196 d_info->rptr += le32_to_cpu(fdinfo->NextEntryOffset);
3197 d_info->name = fdinfo->FileName;
3198 d_info->name_len = le32_to_cpu(fdinfo->FileNameLength);
3199 return 0;
3200 }
3201 case FILE_NAMES_INFORMATION:
3202 {
3203 struct file_names_info *fninfo;
3204
3205 fninfo = (struct file_names_info *)d_info->rptr;
3206 d_info->rptr += le32_to_cpu(fninfo->NextEntryOffset);
3207 d_info->name = fninfo->FileName;
3208 d_info->name_len = le32_to_cpu(fninfo->FileNameLength);
3209 return 0;
3210 }
3211 case FILEID_FULL_DIRECTORY_INFORMATION:
3212 {
3213 struct file_id_full_dir_info *dinfo;
3214
3215 dinfo = (struct file_id_full_dir_info *)d_info->rptr;
3216 d_info->rptr += le32_to_cpu(dinfo->NextEntryOffset);
3217 d_info->name = dinfo->FileName;
3218 d_info->name_len = le32_to_cpu(dinfo->FileNameLength);
3219 return 0;
3220 }
3221 case FILEID_BOTH_DIRECTORY_INFORMATION:
3222 {
3223 struct file_id_both_directory_info *fibdinfo;
3224
3225 fibdinfo = (struct file_id_both_directory_info *)d_info->rptr;
3226 d_info->rptr += le32_to_cpu(fibdinfo->NextEntryOffset);
3227 d_info->name = fibdinfo->FileName;
3228 d_info->name_len = le32_to_cpu(fibdinfo->FileNameLength);
3229 return 0;
3230 }
3231 case SMB_FIND_FILE_POSIX_INFO:
3232 {
3233 struct smb2_posix_info *posix_info;
3234
3235 posix_info = (struct smb2_posix_info *)d_info->rptr;
3236 d_info->rptr += le32_to_cpu(posix_info->NextEntryOffset);
3237 d_info->name = posix_info->name;
3238 d_info->name_len = le32_to_cpu(posix_info->name_len);
3239 return 0;
3240 }
3241 default:
3242 return -EINVAL;
3243 }
3244}
3245
3246/**
3247 * smb2_populate_readdir_entry() - encode directory entry in smb2 response
3248 * buffer
3249 * @conn: connection instance
3250 * @info_level: smb information level
3251 * @d_info: structure included variables for query dir
3252 * @ksmbd_kstat: ksmbd wrapper of dirent stat information
3253 *
3254 * if directory has many entries, find first can't read it fully.
3255 * find next might be called multiple times to read remaining dir entries
3256 *
3257 * Return: 0 on success, otherwise error
3258 */
64b39f4a 3259static int smb2_populate_readdir_entry(struct ksmbd_conn *conn, int info_level,
070fb21e
NJ		 3260 struct ksmbd_dir_info *d_info,
3261 struct ksmbd_kstat *ksmbd_kstat)
e2f34481
NJ		 3262{
3263 int next_entry_offset = 0;
3264 char *conv_name;
3265 int conv_len;
3266 void *kstat;
3267 int struct_sz;
3268
3269 conv_name = ksmbd_convert_dir_info_name(d_info,
3270 conn->local_nls,
3271 &conv_len);
3272 if (!conv_name)
3273 return -ENOMEM;
3274
3275 /* Somehow the name has only terminating NULL bytes */
3276 if (conv_len < 0) {
3277 kfree(conv_name);
3278 return -EINVAL;
3279 }
3280
3281 struct_sz = readdir_info_level_struct_sz(info_level);
3282 next_entry_offset = ALIGN(struct_sz - 1 + conv_len,
3283 KSMBD_DIR_INFO_ALIGNMENT);
3284
3285 if (next_entry_offset > d_info->out_buf_len) {
3286 d_info->out_buf_len = 0;
3287 return -ENOSPC;
3288 }
3289
3290 kstat = d_info->wptr;
3291 if (info_level != FILE_NAMES_INFORMATION)
3292 kstat = ksmbd_vfs_init_kstat(&d_info->wptr, ksmbd_kstat);
3293
3294 switch (info_level) {
3295 case FILE_FULL_DIRECTORY_INFORMATION:
3296 {
3297 struct file_full_directory_info *ffdinfo;
3298
3299 ffdinfo = (struct file_full_directory_info *)kstat;
3300 ffdinfo->FileNameLength = cpu_to_le32(conv_len);
3301 ffdinfo->EaSize =
3302 smb2_get_reparse_tag_special_file(ksmbd_kstat->kstat->mode);
3303 if (ffdinfo->EaSize)
3304 ffdinfo->ExtFileAttributes = ATTR_REPARSE_POINT_LE;
3305 if (d_info->hide_dot_file && d_info->name[0] == '.')
3306 ffdinfo->ExtFileAttributes |= ATTR_HIDDEN_LE;
3307 memcpy(ffdinfo->FileName, conv_name, conv_len);
3308 ffdinfo->NextEntryOffset = cpu_to_le32(next_entry_offset);
3309 break;
3310 }
3311 case FILE_BOTH_DIRECTORY_INFORMATION:
3312 {
3313 struct file_both_directory_info *fbdinfo;
3314
3315 fbdinfo = (struct file_both_directory_info *)kstat;
3316 fbdinfo->FileNameLength = cpu_to_le32(conv_len);
3317 fbdinfo->EaSize =
3318 smb2_get_reparse_tag_special_file(ksmbd_kstat->kstat->mode);
3319 if (fbdinfo->EaSize)
3320 fbdinfo->ExtFileAttributes = ATTR_REPARSE_POINT_LE;
3321 fbdinfo->ShortNameLength = 0;
3322 fbdinfo->Reserved = 0;
3323 if (d_info->hide_dot_file && d_info->name[0] == '.')
3324 fbdinfo->ExtFileAttributes |= ATTR_HIDDEN_LE;
3325 memcpy(fbdinfo->FileName, conv_name, conv_len);
3326 fbdinfo->NextEntryOffset = cpu_to_le32(next_entry_offset);
3327 break;
3328 }
3329 case FILE_DIRECTORY_INFORMATION:
3330 {
3331 struct file_directory_info *fdinfo;
3332
3333 fdinfo = (struct file_directory_info *)kstat;
3334 fdinfo->FileNameLength = cpu_to_le32(conv_len);
3335 if (d_info->hide_dot_file && d_info->name[0] == '.')
3336 fdinfo->ExtFileAttributes |= ATTR_HIDDEN_LE;
3337 memcpy(fdinfo->FileName, conv_name, conv_len);
3338 fdinfo->NextEntryOffset = cpu_to_le32(next_entry_offset);
3339 break;
3340 }
3341 case FILE_NAMES_INFORMATION:
3342 {
3343 struct file_names_info *fninfo;
3344
3345 fninfo = (struct file_names_info *)kstat;
3346 fninfo->FileNameLength = cpu_to_le32(conv_len);
3347 memcpy(fninfo->FileName, conv_name, conv_len);
3348 fninfo->NextEntryOffset = cpu_to_le32(next_entry_offset);
3349 break;
3350 }
3351 case FILEID_FULL_DIRECTORY_INFORMATION:
3352 {
3353 struct file_id_full_dir_info *dinfo;
3354
3355 dinfo = (struct file_id_full_dir_info *)kstat;
3356 dinfo->FileNameLength = cpu_to_le32(conv_len);
3357 dinfo->EaSize =
3358 smb2_get_reparse_tag_special_file(ksmbd_kstat->kstat->mode);
3359 if (dinfo->EaSize)
3360 dinfo->ExtFileAttributes = ATTR_REPARSE_POINT_LE;
3361 dinfo->Reserved = 0;
3362 dinfo->UniqueId = cpu_to_le64(ksmbd_kstat->kstat->ino);
3363 if (d_info->hide_dot_file && d_info->name[0] == '.')
3364 dinfo->ExtFileAttributes |= ATTR_HIDDEN_LE;
3365 memcpy(dinfo->FileName, conv_name, conv_len);
3366 dinfo->NextEntryOffset = cpu_to_le32(next_entry_offset);
3367 break;
3368 }
3369 case FILEID_BOTH_DIRECTORY_INFORMATION:
3370 {
3371 struct file_id_both_directory_info *fibdinfo;
3372
3373 fibdinfo = (struct file_id_both_directory_info *)kstat;
3374 fibdinfo->FileNameLength = cpu_to_le32(conv_len);
3375 fibdinfo->EaSize =
3376 smb2_get_reparse_tag_special_file(ksmbd_kstat->kstat->mode);
3377 if (fibdinfo->EaSize)
3378 fibdinfo->ExtFileAttributes = ATTR_REPARSE_POINT_LE;
3379 fibdinfo->UniqueId = cpu_to_le64(ksmbd_kstat->kstat->ino);
3380 fibdinfo->ShortNameLength = 0;
3381 fibdinfo->Reserved = 0;
3382 fibdinfo->Reserved2 = cpu_to_le16(0);
3383 if (d_info->hide_dot_file && d_info->name[0] == '.')
3384 fibdinfo->ExtFileAttributes |= ATTR_HIDDEN_LE;
3385 memcpy(fibdinfo->FileName, conv_name, conv_len);
3386 fibdinfo->NextEntryOffset = cpu_to_le32(next_entry_offset);
3387 break;
3388 }
3389 case SMB_FIND_FILE_POSIX_INFO:
3390 {
3391 struct smb2_posix_info *posix_info;
3392 u64 time;
3393
3394 posix_info = (struct smb2_posix_info *)kstat;
3395 posix_info->Ignored = 0;
3396 posix_info->CreationTime = cpu_to_le64(ksmbd_kstat->create_time);
3397 time = ksmbd_UnixTimeToNT(ksmbd_kstat->kstat->ctime);
3398 posix_info->ChangeTime = cpu_to_le64(time);
3399 time = ksmbd_UnixTimeToNT(ksmbd_kstat->kstat->atime);
3400 posix_info->LastAccessTime = cpu_to_le64(time);
3401 time = ksmbd_UnixTimeToNT(ksmbd_kstat->kstat->mtime);
3402 posix_info->LastWriteTime = cpu_to_le64(time);
3403 posix_info->EndOfFile = cpu_to_le64(ksmbd_kstat->kstat->size);
3404 posix_info->AllocationSize = cpu_to_le64(ksmbd_kstat->kstat->blocks << 9);
3405 posix_info->DeviceId = cpu_to_le32(ksmbd_kstat->kstat->rdev);
3406 posix_info->HardLinks = cpu_to_le32(ksmbd_kstat->kstat->nlink);
3407 posix_info->Mode = cpu_to_le32(ksmbd_kstat->kstat->mode);
3408 posix_info->Inode = cpu_to_le64(ksmbd_kstat->kstat->ino);
3409 posix_info->DosAttributes =
3410 S_ISDIR(ksmbd_kstat->kstat->mode) ? ATTR_DIRECTORY_LE : ATTR_ARCHIVE_LE;
3411 if (d_info->hide_dot_file && d_info->name[0] == '.')
3412 posix_info->DosAttributes |= ATTR_HIDDEN_LE;
3413 id_to_sid(from_kuid(&init_user_ns, ksmbd_kstat->kstat->uid),
070fb21e 3414 SIDNFS_USER, (struct smb_sid *)&posix_info->SidBuffer[0]);
e2f34481 3415 id_to_sid(from_kgid(&init_user_ns, ksmbd_kstat->kstat->gid),
070fb21e 3416 SIDNFS_GROUP, (struct smb_sid *)&posix_info->SidBuffer[20]);
e2f34481
NJ		 3417 memcpy(posix_info->name, conv_name, conv_len);
3418 posix_info->name_len = cpu_to_le32(conv_len);
3419 posix_info->NextEntryOffset = cpu_to_le32(next_entry_offset);
3420 break;
3421 }
3422
3423 } /* switch (info_level) */
3424
3425 d_info->last_entry_offset = d_info->data_count;
3426 d_info->data_count += next_entry_offset;
e7735c85 3427 d_info->out_buf_len -= next_entry_offset;
e2f34481
NJ		 3428 d_info->wptr += next_entry_offset;
3429 kfree(conv_name);
3430
3431 ksmbd_debug(SMB,
070fb21e
NJ		 3432 "info_level : %d, buf_len :%d, next_offset : %d, data_count : %d\n",
3433 info_level, d_info->out_buf_len,
3434 next_entry_offset, d_info->data_count);
e2f34481
NJ		 3435
3436 return 0;
3437}
3438
3439struct smb2_query_dir_private {
3440 struct ksmbd_work *work;
3441 char *search_pattern;
3442 struct ksmbd_file *dir_fp;
3443
3444 struct ksmbd_dir_info *d_info;
3445 int info_level;
3446};
3447
3448static void lock_dir(struct ksmbd_file *dir_fp)
3449{
3450 struct dentry *dir = dir_fp->filp->f_path.dentry;
3451
3452 inode_lock_nested(d_inode(dir), I_MUTEX_PARENT);
3453}
3454
3455static void unlock_dir(struct ksmbd_file *dir_fp)
3456{
3457 struct dentry *dir = dir_fp->filp->f_path.dentry;
3458
3459 inode_unlock(d_inode(dir));
3460}
3461
3462static int process_query_dir_entries(struct smb2_query_dir_private *priv)
3463{
3464 struct kstat kstat;
3465 struct ksmbd_kstat ksmbd_kstat;
3466 int rc;
3467 int i;
3468
3469 for (i = 0; i < priv->d_info->num_entry; i++) {
3470 struct dentry *dent;
3471
3472 if (dentry_name(priv->d_info, priv->info_level))
3473 return -EINVAL;
3474
3475 lock_dir(priv->dir_fp);
3476 dent = lookup_one_len(priv->d_info->name,
3477 priv->dir_fp->filp->f_path.dentry,
3478 priv->d_info->name_len);
3479 unlock_dir(priv->dir_fp);
3480
3481 if (IS_ERR(dent)) {
3482 ksmbd_debug(SMB, "Cannot lookup `%s' [%ld]\n",
070fb21e
NJ		 3483 priv->d_info->name,
3484 PTR_ERR(dent));
e2f34481
NJ		 3485 continue;
3486 }
3487 if (unlikely(d_is_negative(dent))) {
3488 dput(dent);
3489 ksmbd_debug(SMB, "Negative dentry `%s'\n",
3490 priv->d_info->name);
3491 continue;
3492 }
3493
3494 ksmbd_kstat.kstat = &kstat;
3495 if (priv->info_level != FILE_NAMES_INFORMATION)
3496 ksmbd_vfs_fill_dentry_attrs(priv->work,
3497 dent,
3498 &ksmbd_kstat);
3499
3500 rc = smb2_populate_readdir_entry(priv->work->conn,
3501 priv->info_level,
3502 priv->d_info,
3503 &ksmbd_kstat);
3504 dput(dent);
3505 if (rc)
3506 return rc;
3507 }
3508 return 0;
3509}
3510
3511static int reserve_populate_dentry(struct ksmbd_dir_info *d_info,
070fb21e 3512 int info_level)
e2f34481
NJ		 3513{
3514 int struct_sz;
3515 int conv_len;
3516 int next_entry_offset;
3517
3518 struct_sz = readdir_info_level_struct_sz(info_level);
3519 if (struct_sz == -EOPNOTSUPP)
3520 return -EOPNOTSUPP;
3521
3522 conv_len = (d_info->name_len + 1) * 2;
3523 next_entry_offset = ALIGN(struct_sz - 1 + conv_len,
3524 KSMBD_DIR_INFO_ALIGNMENT);
3525
3526 if (next_entry_offset > d_info->out_buf_len) {
3527 d_info->out_buf_len = 0;
3528 return -ENOSPC;
3529 }
3530
3531 switch (info_level) {
3532 case FILE_FULL_DIRECTORY_INFORMATION:
3533 {
3534 struct file_full_directory_info *ffdinfo;
3535
3536 ffdinfo = (struct file_full_directory_info *)d_info->wptr;
3537 memcpy(ffdinfo->FileName, d_info->name, d_info->name_len);
3538 ffdinfo->FileName[d_info->name_len] = 0x00;
3539 ffdinfo->FileNameLength = cpu_to_le32(d_info->name_len);
3540 ffdinfo->NextEntryOffset = cpu_to_le32(next_entry_offset);
3541 break;
3542 }
3543 case FILE_BOTH_DIRECTORY_INFORMATION:
3544 {
3545 struct file_both_directory_info *fbdinfo;
3546
3547 fbdinfo = (struct file_both_directory_info *)d_info->wptr;
3548 memcpy(fbdinfo->FileName, d_info->name, d_info->name_len);
3549 fbdinfo->FileName[d_info->name_len] = 0x00;
3550 fbdinfo->FileNameLength = cpu_to_le32(d_info->name_len);
3551 fbdinfo->NextEntryOffset = cpu_to_le32(next_entry_offset);
3552 break;
3553 }
3554 case FILE_DIRECTORY_INFORMATION:
3555 {
3556 struct file_directory_info *fdinfo;
3557
3558 fdinfo = (struct file_directory_info *)d_info->wptr;
3559 memcpy(fdinfo->FileName, d_info->name, d_info->name_len);
3560 fdinfo->FileName[d_info->name_len] = 0x00;
3561 fdinfo->FileNameLength = cpu_to_le32(d_info->name_len);
3562 fdinfo->NextEntryOffset = cpu_to_le32(next_entry_offset);
3563 break;
3564 }
3565 case FILE_NAMES_INFORMATION:
3566 {
3567 struct file_names_info *fninfo;
3568
3569 fninfo = (struct file_names_info *)d_info->wptr;
3570 memcpy(fninfo->FileName, d_info->name, d_info->name_len);
3571 fninfo->FileName[d_info->name_len] = 0x00;
3572 fninfo->FileNameLength = cpu_to_le32(d_info->name_len);
3573 fninfo->NextEntryOffset = cpu_to_le32(next_entry_offset);
3574 break;
3575 }
3576 case FILEID_FULL_DIRECTORY_INFORMATION:
3577 {
3578 struct file_id_full_dir_info *dinfo;
3579
3580 dinfo = (struct file_id_full_dir_info *)d_info->wptr;
3581 memcpy(dinfo->FileName, d_info->name, d_info->name_len);
3582 dinfo->FileName[d_info->name_len] = 0x00;
3583 dinfo->FileNameLength = cpu_to_le32(d_info->name_len);
3584 dinfo->NextEntryOffset = cpu_to_le32(next_entry_offset);
3585 break;
3586 }
3587 case FILEID_BOTH_DIRECTORY_INFORMATION:
3588 {
3589 struct file_id_both_directory_info *fibdinfo;
3590
3591 fibdinfo = (struct file_id_both_directory_info *)d_info->wptr;
3592 memcpy(fibdinfo->FileName, d_info->name, d_info->name_len);
3593 fibdinfo->FileName[d_info->name_len] = 0x00;
3594 fibdinfo->FileNameLength = cpu_to_le32(d_info->name_len);
3595 fibdinfo->NextEntryOffset = cpu_to_le32(next_entry_offset);
3596 break;
3597 }
3598 case SMB_FIND_FILE_POSIX_INFO:
3599 {
3600 struct smb2_posix_info *posix_info;
3601
3602 posix_info = (struct smb2_posix_info *)d_info->wptr;
3603 memcpy(posix_info->name, d_info->name, d_info->name_len);
3604 posix_info->name[d_info->name_len] = 0x00;
3605 posix_info->name_len = cpu_to_le32(d_info->name_len);
3606 posix_info->NextEntryOffset =
3607 cpu_to_le32(next_entry_offset);
3608 break;
3609 }
3610 } /* switch (info_level) */
3611
3612 d_info->num_entry++;
3613 d_info->out_buf_len -= next_entry_offset;
3614 d_info->wptr += next_entry_offset;
3615 return 0;
3616}
3617
64b39f4a 3618static int __query_dir(struct dir_context *ctx, const char *name, int namlen,
070fb21e 3619 loff_t offset, u64 ino, unsigned int d_type)
e2f34481
NJ		 3620{
3621 struct ksmbd_readdir_data *buf;
3622 struct smb2_query_dir_private *priv;
3623 struct ksmbd_dir_info *d_info;
3624 int rc;
3625
3626 buf = container_of(ctx, struct ksmbd_readdir_data, ctx);
3627 priv = buf->private;
3628 d_info = priv->d_info;
3629
3630 /* dot and dotdot entries are already reserved */
3631 if (!strcmp(".", name) || !strcmp("..", name))
3632 return 0;
3633 if (ksmbd_share_veto_filename(priv->work->tcon->share_conf, name))
3634 return 0;
b24c9335 3635 if (!match_pattern(name, namlen, priv->search_pattern))
e2f34481
NJ		 3636 return 0;
3637
3638 d_info->name = name;
3639 d_info->name_len = namlen;
3640 rc = reserve_populate_dentry(d_info, priv->info_level);
3641 if (rc)
3642 return rc;
3643 if (d_info->flags & SMB2_RETURN_SINGLE_ENTRY) {
3644 d_info->out_buf_len = 0;
3645 return 0;
3646 }
3647 return 0;
3648}
3649
3650static void restart_ctx(struct dir_context *ctx)
3651{
3652 ctx->pos = 0;
3653}
3654
3655static int verify_info_level(int info_level)
3656{
3657 switch (info_level) {
3658 case FILE_FULL_DIRECTORY_INFORMATION:
3659 case FILE_BOTH_DIRECTORY_INFORMATION:
3660 case FILE_DIRECTORY_INFORMATION:
3661 case FILE_NAMES_INFORMATION:
3662 case FILEID_FULL_DIRECTORY_INFORMATION:
3663 case FILEID_BOTH_DIRECTORY_INFORMATION:
3664 case SMB_FIND_FILE_POSIX_INFO:
3665 break;
3666 default:
3667 return -EOPNOTSUPP;
3668 }
3669
3670 return 0;
3671}
3672
3673int smb2_query_dir(struct ksmbd_work *work)
3674{
3675 struct ksmbd_conn *conn = work->conn;
3676 struct smb2_query_directory_req *req;
3677 struct smb2_query_directory_rsp *rsp, *rsp_org;
3678 struct ksmbd_share_config *share = work->tcon->share_conf;
3679 struct ksmbd_file *dir_fp = NULL;
3680 struct ksmbd_dir_info d_info;
3681 int rc = 0;
3682 char *srch_ptr = NULL;
3683 unsigned char srch_flag;
3684 int buffer_sz;
3685 struct smb2_query_dir_private query_dir_private = {NULL, };
3686
e5066499 3687 rsp_org = work->response_buf;
e2f34481
NJ		 3688 WORK_BUFFERS(work, req, rsp);
3689
3690 if (ksmbd_override_fsids(work)) {
3691 rsp->hdr.Status = STATUS_NO_MEMORY;
3692 smb2_set_err_rsp(work);
3693 return -ENOMEM;
3694 }
3695
3696 rc = verify_info_level(req->FileInformationClass);
3697 if (rc) {
3698 rc = -EFAULT;
3699 goto err_out2;
3700 }
3701
3702 dir_fp = ksmbd_lookup_fd_slow(work,
070fb21e
NJ		 3703 le64_to_cpu(req->VolatileFileId),
3704 le64_to_cpu(req->PersistentFileId));
e2f34481
NJ		 3705 if (!dir_fp) {
3706 rc = -EBADF;
3707 goto err_out2;
3708 }
3709
3710 if (!(dir_fp->daccess & FILE_LIST_DIRECTORY_LE) ||
070fb21e
NJ		 3711 inode_permission(&init_user_ns, file_inode(dir_fp->filp),
3712 MAY_READ | MAY_EXEC)) {
bde1694a
NJ		 3713 pr_err("no right to enumerate directory (%s)\n",
3714 FP_FILENAME(dir_fp));
e2f34481
NJ		 3715 rc = -EACCES;
3716 goto err_out2;
3717 }
3718
3719 if (!S_ISDIR(file_inode(dir_fp->filp)->i_mode)) {
bde1694a 3720 pr_err("can't do query dir for a file\n");
e2f34481
NJ		 3721 rc = -EINVAL;
3722 goto err_out2;
3723 }
3724
3725 srch_flag = req->Flags;
3726 srch_ptr = smb_strndup_from_utf16(req->Buffer,
070fb21e
NJ		 3727 le16_to_cpu(req->FileNameLength), 1,
3728 conn->local_nls);
e2f34481
NJ		 3729 if (IS_ERR(srch_ptr)) {
3730 ksmbd_debug(SMB, "Search Pattern not found\n");
3731 rc = -EINVAL;
3732 goto err_out2;
64b39f4a 3733 } else {
e2f34481 3734 ksmbd_debug(SMB, "Search pattern is %s\n", srch_ptr);
64b39f4a 3735 }
e2f34481
NJ		 3736
3737 ksmbd_debug(SMB, "Directory name is %s\n", dir_fp->filename);
3738
3739 if (srch_flag & SMB2_REOPEN || srch_flag & SMB2_RESTART_SCANS) {
3740 ksmbd_debug(SMB, "Restart directory scan\n");
3741 generic_file_llseek(dir_fp->filp, 0, SEEK_SET);
3742 restart_ctx(&dir_fp->readdir_data.ctx);
3743 }
3744
3745 memset(&d_info, 0, sizeof(struct ksmbd_dir_info));
3746 d_info.wptr = (char *)rsp->Buffer;
3747 d_info.rptr = (char *)rsp->Buffer;
64b39f4a 3748 d_info.out_buf_len = (work->response_sz - (get_rfc1002_len(rsp_org) + 4));
070fb21e
NJ		 3749 d_info.out_buf_len = min_t(int, d_info.out_buf_len, le32_to_cpu(req->OutputBufferLength)) -
3750 sizeof(struct smb2_query_directory_rsp);
e2f34481
NJ		 3751 d_info.flags = srch_flag;
3752
3753 /*
3754 * reserve dot and dotdot entries in head of buffer
3755 * in first response
3756 */
3757 rc = ksmbd_populate_dot_dotdot_entries(work, req->FileInformationClass,
070fb21e
NJ		 3758 dir_fp, &d_info, srch_ptr,
3759 smb2_populate_readdir_entry);
e2f34481
NJ		 3760 if (rc == -ENOSPC)
3761 rc = 0;
3762 else if (rc)
3763 goto err_out;
3764
3765 if (test_share_config_flag(share, KSMBD_SHARE_FLAG_HIDE_DOT_FILES))
3766 d_info.hide_dot_file = true;
3767
3768 buffer_sz = d_info.out_buf_len;
3769 d_info.rptr = d_info.wptr;
3770 query_dir_private.work = work;
3771 query_dir_private.search_pattern = srch_ptr;
3772 query_dir_private.dir_fp = dir_fp;
3773 query_dir_private.d_info = &d_info;
3774 query_dir_private.info_level = req->FileInformationClass;
3775 dir_fp->readdir_data.private = &query_dir_private;
3776 set_ctx_actor(&dir_fp->readdir_data.ctx, __query_dir);
3777
e8c06191 3778 rc = iterate_dir(dir_fp->filp, &dir_fp->readdir_data.ctx);
e2f34481
NJ		 3779 if (rc == 0)
3780 restart_ctx(&dir_fp->readdir_data.ctx);
3781 if (rc == -ENOSPC)
3782 rc = 0;
3783 if (rc)
3784 goto err_out;
3785
3786 d_info.wptr = d_info.rptr;
3787 d_info.out_buf_len = buffer_sz;
3788 rc = process_query_dir_entries(&query_dir_private);
3789 if (rc)
3790 goto err_out;
3791
3792 if (!d_info.data_count && d_info.out_buf_len >= 0) {
64b39f4a 3793 if (srch_flag & SMB2_RETURN_SINGLE_ENTRY && !is_asterisk(srch_ptr)) {
e2f34481 3794 rsp->hdr.Status = STATUS_NO_SUCH_FILE;
64b39f4a 3795 } else {
e2f34481
NJ		 3796 dir_fp->dot_dotdot[0] = dir_fp->dot_dotdot[1] = 0;
3797 rsp->hdr.Status = STATUS_NO_MORE_FILES;
3798 }
3799 rsp->StructureSize = cpu_to_le16(9);
3800 rsp->OutputBufferOffset = cpu_to_le16(0);
3801 rsp->OutputBufferLength = cpu_to_le32(0);
3802 rsp->Buffer[0] = 0;
3803 inc_rfc1001_len(rsp_org, 9);
3804 } else {
3805 ((struct file_directory_info *)
3806 ((char *)rsp->Buffer + d_info.last_entry_offset))
3807 ->NextEntryOffset = 0;
3808
3809 rsp->StructureSize = cpu_to_le16(9);
3810 rsp->OutputBufferOffset = cpu_to_le16(72);
3811 rsp->OutputBufferLength = cpu_to_le32(d_info.data_count);
3812 inc_rfc1001_len(rsp_org, 8 + d_info.data_count);
3813 }
3814
3815 kfree(srch_ptr);
3816 ksmbd_fd_put(work, dir_fp);
3817 ksmbd_revert_fsids(work);
3818 return 0;
3819
3820err_out:
bde1694a 3821 pr_err("error while processing smb2 query dir rc = %d\n", rc);
e2f34481
NJ		 3822 kfree(srch_ptr);
3823
3824err_out2:
3825 if (rc == -EINVAL)
3826 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
3827 else if (rc == -EACCES)
3828 rsp->hdr.Status = STATUS_ACCESS_DENIED;
3829 else if (rc == -ENOENT)
3830 rsp->hdr.Status = STATUS_NO_SUCH_FILE;
3831 else if (rc == -EBADF)
3832 rsp->hdr.Status = STATUS_FILE_CLOSED;
3833 else if (rc == -ENOMEM)
3834 rsp->hdr.Status = STATUS_NO_MEMORY;
3835 else if (rc == -EFAULT)
3836 rsp->hdr.Status = STATUS_INVALID_INFO_CLASS;
3837 if (!rsp->hdr.Status)
3838 rsp->hdr.Status = STATUS_UNEXPECTED_IO_ERROR;
3839
3840 smb2_set_err_rsp(work);
3841 ksmbd_fd_put(work, dir_fp);
3842 ksmbd_revert_fsids(work);
3843 return 0;
3844}
3845
3846/**
3847 * buffer_check_err() - helper function to check buffer errors
3848 * @reqOutputBufferLength: max buffer length expected in command response
3849 * @rsp: query info response buffer contains output buffer length
3850 * @infoclass_size: query info class response buffer size
3851 *
3852 * Return: 0 on success, otherwise error
3853 */
3854static int buffer_check_err(int reqOutputBufferLength,
070fb21e 3855 struct smb2_query_info_rsp *rsp, int infoclass_size)
e2f34481
NJ		 3856{
3857 if (reqOutputBufferLength < le32_to_cpu(rsp->OutputBufferLength)) {
3858 if (reqOutputBufferLength < infoclass_size) {
bde1694a 3859 pr_err("Invalid Buffer Size Requested\n");
e2f34481 3860 rsp->hdr.Status = STATUS_INFO_LENGTH_MISMATCH;
64b39f4a 3861 rsp->hdr.smb2_buf_length = cpu_to_be32(sizeof(struct smb2_hdr) - 4);
e2f34481
NJ		 3862 return -EINVAL;
3863 }
3864
3865 ksmbd_debug(SMB, "Buffer Overflow\n");
3866 rsp->hdr.Status = STATUS_BUFFER_OVERFLOW;
64b39f4a
NJ		 3867 rsp->hdr.smb2_buf_length = cpu_to_be32(sizeof(struct smb2_hdr) - 4 +
3868 reqOutputBufferLength);
3869 rsp->OutputBufferLength = cpu_to_le32(reqOutputBufferLength);
e2f34481
NJ		 3870 }
3871 return 0;
3872}
3873
3874static void get_standard_info_pipe(struct smb2_query_info_rsp *rsp)
3875{
3876 struct smb2_file_standard_info *sinfo;
3877
3878 sinfo = (struct smb2_file_standard_info *)rsp->Buffer;
3879
3880 sinfo->AllocationSize = cpu_to_le64(4096);
3881 sinfo->EndOfFile = cpu_to_le64(0);
3882 sinfo->NumberOfLinks = cpu_to_le32(1);
3883 sinfo->DeletePending = 1;
3884 sinfo->Directory = 0;
3885 rsp->OutputBufferLength =
3886 cpu_to_le32(sizeof(struct smb2_file_standard_info));
3887 inc_rfc1001_len(rsp, sizeof(struct smb2_file_standard_info));
3888}
3889
070fb21e 3890static void get_internal_info_pipe(struct smb2_query_info_rsp *rsp, u64 num)
e2f34481
NJ		 3891{
3892 struct smb2_file_internal_info *file_info;
3893
3894 file_info = (struct smb2_file_internal_info *)rsp->Buffer;
3895
3896 /* any unique number */
3897 file_info->IndexNumber = cpu_to_le64(num | (1ULL << 63));
3898 rsp->OutputBufferLength =
3899 cpu_to_le32(sizeof(struct smb2_file_internal_info));
3900 inc_rfc1001_len(rsp, sizeof(struct smb2_file_internal_info));
3901}
3902
e2f34481 3903static int smb2_get_info_file_pipe(struct ksmbd_session *sess,
070fb21e
NJ		 3904 struct smb2_query_info_req *req,
3905 struct smb2_query_info_rsp *rsp)
e2f34481 3906{
64b39f4a 3907 u64 id;
e2f34481
NJ		 3908 int rc;
3909
3910 /*
3911 * Windows can sometime send query file info request on
3912 * pipe without opening it, checking error condition here
3913 */
3914 id = le64_to_cpu(req->VolatileFileId);
3915 if (!ksmbd_session_rpc_method(sess, id))
3916 return -ENOENT;
3917
3918 ksmbd_debug(SMB, "FileInfoClass %u, FileId 0x%llx\n",
070fb21e 3919 req->FileInfoClass, le64_to_cpu(req->VolatileFileId));
e2f34481
NJ		 3920
3921 switch (req->FileInfoClass) {
3922 case FILE_STANDARD_INFORMATION:
3923 get_standard_info_pipe(rsp);
3924 rc = buffer_check_err(le32_to_cpu(req->OutputBufferLength),
070fb21e 3925 rsp, FILE_STANDARD_INFORMATION_SIZE);
e2f34481
NJ		 3926 break;
3927 case FILE_INTERNAL_INFORMATION:
3928 get_internal_info_pipe(rsp, id);
3929 rc = buffer_check_err(le32_to_cpu(req->OutputBufferLength),
070fb21e 3930 rsp, FILE_INTERNAL_INFORMATION_SIZE);
e2f34481
NJ		 3931 break;
3932 default:
3933 ksmbd_debug(SMB, "smb2_info_file_pipe for %u not supported\n",
070fb21e 3934 req->FileInfoClass);
e2f34481
NJ		 3935 rc = -EOPNOTSUPP;
3936 }
3937 return rc;
3938}
3939
3940/**
3941 * smb2_get_ea() - handler for smb2 get extended attribute command
3942 * @work: smb work containing query info command buffer
95fa1ce9
HL		 3943 * @fp: ksmbd_file pointer
3944 * @req: get extended attribute request
3945 * @rsp: response buffer pointer
3946 * @rsp_org: base response buffer pointer in case of chained response
e2f34481
NJ		 3947 *
3948 * Return: 0 on success, otherwise error
3949 */
64b39f4a 3950static int smb2_get_ea(struct ksmbd_work *work, struct ksmbd_file *fp,
070fb21e
NJ		 3951 struct smb2_query_info_req *req,
3952 struct smb2_query_info_rsp *rsp, void *rsp_org)
e2f34481
NJ		 3953{
3954 struct smb2_ea_info *eainfo, *prev_eainfo;
3955 char *name, *ptr, *xattr_list = NULL, *buf;
3956 int rc, name_len, value_len, xattr_list_len, idx;
3957 ssize_t buf_free_len, alignment_bytes, next_offset, rsp_data_cnt = 0;
3958 struct smb2_ea_info_req *ea_req = NULL;
3959 struct path *path;
3960
3961 if (!(fp->daccess & FILE_READ_EA_LE)) {
bde1694a
NJ		 3962 pr_err("Not permitted to read ext attr : 0x%x\n",
3963 fp->daccess);
e2f34481
NJ		 3964 return -EACCES;
3965 }
3966
3967 path = &fp->filp->f_path;
3968 /* single EA entry is requested with given user.* name */
64b39f4a 3969 if (req->InputBufferLength) {
e2f34481 3970 ea_req = (struct smb2_ea_info_req *)req->Buffer;
64b39f4a 3971 } else {
e2f34481
NJ		 3972 /* need to send all EAs, if no specific EA is requested*/
3973 if (le32_to_cpu(req->Flags) & SL_RETURN_SINGLE_ENTRY)
3974 ksmbd_debug(SMB,
070fb21e
NJ		 3975 "All EAs are requested but need to send single EA entry in rsp flags 0x%x\n",
3976 le32_to_cpu(req->Flags));
e2f34481
NJ		 3977 }
3978
3979 buf_free_len = work->response_sz -
3980 (get_rfc1002_len(rsp_org) + 4) -
3981 sizeof(struct smb2_query_info_rsp);
3982
3983 if (le32_to_cpu(req->OutputBufferLength) < buf_free_len)
3984 buf_free_len = le32_to_cpu(req->OutputBufferLength);
3985
3986 rc = ksmbd_vfs_listxattr(path->dentry, &xattr_list);
3987 if (rc < 0) {
3988 rsp->hdr.Status = STATUS_INVALID_HANDLE;
3989 goto out;
3990 } else if (!rc) { /* there is no EA in the file */
3991 ksmbd_debug(SMB, "no ea data in the file\n");
3992 goto done;
3993 }
3994 xattr_list_len = rc;
3995
3996 ptr = (char *)rsp->Buffer;
3997 eainfo = (struct smb2_ea_info *)ptr;
3998 prev_eainfo = eainfo;
3999 idx = 0;
4000
4001 while (idx < xattr_list_len) {
4002 name = xattr_list + idx;
4003 name_len = strlen(name);
4004
4005 ksmbd_debug(SMB, "%s, len %d\n", name, name_len);
4006 idx += name_len + 1;
4007
4008 /*
4009 * CIFS does not support EA other than user.* namespace,
4010 * still keep the framework generic, to list other attrs
4011 * in future.
4012 */
4013 if (strncmp(name, XATTR_USER_PREFIX, XATTR_USER_PREFIX_LEN))
4014 continue;
4015
4016 if (!strncmp(&name[XATTR_USER_PREFIX_LEN], STREAM_PREFIX,
64b39f4a 4017 STREAM_PREFIX_LEN))
e2f34481
NJ		 4018 continue;
4019
4020 if (req->InputBufferLength &&
64b39f4a
NJ		 4021 strncmp(&name[XATTR_USER_PREFIX_LEN], ea_req->name,
4022 ea_req->EaNameLength))
e2f34481
NJ		 4023 continue;
4024
4025 if (!strncmp(&name[XATTR_USER_PREFIX_LEN],
64b39f4a 4026 DOS_ATTRIBUTE_PREFIX, DOS_ATTRIBUTE_PREFIX_LEN))
e2f34481
NJ		 4027 continue;
4028
4029 if (!strncmp(name, XATTR_USER_PREFIX, XATTR_USER_PREFIX_LEN))
4030 name_len -= XATTR_USER_PREFIX_LEN;
4031
4032 ptr = (char *)(&eainfo->name + name_len + 1);
4033 buf_free_len -= (offsetof(struct smb2_ea_info, name) +
4034 name_len + 1);
4035 /* bailout if xattr can't fit in buf_free_len */
4036 value_len = ksmbd_vfs_getxattr(path->dentry, name, &buf);
4037 if (value_len <= 0) {
4038 rc = -ENOENT;
4039 rsp->hdr.Status = STATUS_INVALID_HANDLE;
4040 goto out;
4041 }
4042
4043 buf_free_len -= value_len;
4044 if (buf_free_len < 0) {
79f6b11a 4045 kfree(buf);
e2f34481
NJ		 4046 break;
4047 }
4048
4049 memcpy(ptr, buf, value_len);
79f6b11a 4050 kfree(buf);
e2f34481
NJ		 4051
4052 ptr += value_len;
4053 eainfo->Flags = 0;
4054 eainfo->EaNameLength = name_len;
4055
64b39f4a 4056 if (!strncmp(name, XATTR_USER_PREFIX, XATTR_USER_PREFIX_LEN))
e2f34481 4057 memcpy(eainfo->name, &name[XATTR_USER_PREFIX_LEN],
070fb21e 4058 name_len);
e2f34481
NJ		 4059 else
4060 memcpy(eainfo->name, name, name_len);
4061
4062 eainfo->name[name_len] = '\0';
4063 eainfo->EaValueLength = cpu_to_le16(value_len);
4064 next_offset = offsetof(struct smb2_ea_info, name) +
4065 name_len + 1 + value_len;
4066
4067 /* align next xattr entry at 4 byte bundary */
4068 alignment_bytes = ((next_offset + 3) & ~3) - next_offset;
4069 if (alignment_bytes) {
4070 memset(ptr, '\0', alignment_bytes);
4071 ptr += alignment_bytes;
4072 next_offset += alignment_bytes;
4073 buf_free_len -= alignment_bytes;
4074 }
4075 eainfo->NextEntryOffset = cpu_to_le32(next_offset);
4076 prev_eainfo = eainfo;
4077 eainfo = (struct smb2_ea_info *)ptr;
4078 rsp_data_cnt += next_offset;
4079
4080 if (req->InputBufferLength) {
4081 ksmbd_debug(SMB, "single entry requested\n");
4082 break;
4083 }
4084 }
4085
4086 /* no more ea entries */
4087 prev_eainfo->NextEntryOffset = 0;
4088done:
4089 rc = 0;
4090 if (rsp_data_cnt == 0)
4091 rsp->hdr.Status = STATUS_NO_EAS_ON_FILE;
4092 rsp->OutputBufferLength = cpu_to_le32(rsp_data_cnt);
4093 inc_rfc1001_len(rsp_org, rsp_data_cnt);
4094out:
79f6b11a 4095 kvfree(xattr_list);
e2f34481
NJ		 4096 return rc;
4097}
4098
4099static void get_file_access_info(struct smb2_query_info_rsp *rsp,
070fb21e 4100 struct ksmbd_file *fp, void *rsp_org)
e2f34481
NJ		 4101{
4102 struct smb2_file_access_info *file_info;
4103
4104 file_info = (struct smb2_file_access_info *)rsp->Buffer;
4105 file_info->AccessFlags = fp->daccess;
4106 rsp->OutputBufferLength =
4107 cpu_to_le32(sizeof(struct smb2_file_access_info));
4108 inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_access_info));
4109}
4110
4111static int get_file_basic_info(struct smb2_query_info_rsp *rsp,
070fb21e 4112 struct ksmbd_file *fp, void *rsp_org)
e2f34481
NJ		 4113{
4114 struct smb2_file_all_info *basic_info;
4115 struct kstat stat;
4116 u64 time;
4117
4118 if (!(fp->daccess & FILE_READ_ATTRIBUTES_LE)) {
bde1694a
NJ		 4119 pr_err("no right to read the attributes : 0x%x\n",
4120 fp->daccess);
e2f34481
NJ		 4121 return -EACCES;
4122 }
4123
4124 basic_info = (struct smb2_file_all_info *)rsp->Buffer;
4125 generic_fillattr(&init_user_ns, FP_INODE(fp), &stat);
4126 basic_info->CreationTime = cpu_to_le64(fp->create_time);
4127 time = ksmbd_UnixTimeToNT(stat.atime);
4128 basic_info->LastAccessTime = cpu_to_le64(time);
4129 time = ksmbd_UnixTimeToNT(stat.mtime);
4130 basic_info->LastWriteTime = cpu_to_le64(time);
4131 time = ksmbd_UnixTimeToNT(stat.ctime);
4132 basic_info->ChangeTime = cpu_to_le64(time);
4133 basic_info->Attributes = fp->f_ci->m_fattr;
4134 basic_info->Pad1 = 0;
4135 rsp->OutputBufferLength =
64b39f4a 4136 cpu_to_le32(offsetof(struct smb2_file_all_info, AllocationSize));
e2f34481
NJ		 4137 inc_rfc1001_len(rsp_org, offsetof(struct smb2_file_all_info,
4138 AllocationSize));
4139 return 0;
4140}
4141
4142static unsigned long long get_allocation_size(struct inode *inode,
070fb21e 4143 struct kstat *stat)
e2f34481
NJ		 4144{
4145 unsigned long long alloc_size = 0;
4146
4147 if (!S_ISDIR(stat->mode)) {
4148 if ((inode->i_blocks << 9) <= stat->size)
4149 alloc_size = stat->size;
4150 else
4151 alloc_size = inode->i_blocks << 9;
e2f34481
NJ		 4152 }
4153
4154 return alloc_size;
4155}
4156
4157static void get_file_standard_info(struct smb2_query_info_rsp *rsp,
070fb21e 4158 struct ksmbd_file *fp, void *rsp_org)
e2f34481
NJ		 4159{
4160 struct smb2_file_standard_info *sinfo;
4161 unsigned int delete_pending;
4162 struct inode *inode;
4163 struct kstat stat;
4164
4165 inode = FP_INODE(fp);
4166 generic_fillattr(&init_user_ns, inode, &stat);
4167
4168 sinfo = (struct smb2_file_standard_info *)rsp->Buffer;
4169 delete_pending = ksmbd_inode_pending_delete(fp);
4170
4171 sinfo->AllocationSize = cpu_to_le64(get_allocation_size(inode, &stat));
4172 sinfo->EndOfFile = S_ISDIR(stat.mode) ? 0 : cpu_to_le64(stat.size);
4173 sinfo->NumberOfLinks = cpu_to_le32(get_nlink(&stat) - delete_pending);
4174 sinfo->DeletePending = delete_pending;
4175 sinfo->Directory = S_ISDIR(stat.mode) ? 1 : 0;
4176 rsp->OutputBufferLength =
4177 cpu_to_le32(sizeof(struct smb2_file_standard_info));
4178 inc_rfc1001_len(rsp_org,
4179 sizeof(struct smb2_file_standard_info));
4180}
4181
4182static void get_file_alignment_info(struct smb2_query_info_rsp *rsp,
070fb21e 4183 void *rsp_org)
e2f34481
NJ		 4184{
4185 struct smb2_file_alignment_info *file_info;
4186
4187 file_info = (struct smb2_file_alignment_info *)rsp->Buffer;
4188 file_info->AlignmentRequirement = 0;
4189 rsp->OutputBufferLength =
4190 cpu_to_le32(sizeof(struct smb2_file_alignment_info));
4191 inc_rfc1001_len(rsp_org,
4192 sizeof(struct smb2_file_alignment_info));
4193}
4194
4195static int get_file_all_info(struct ksmbd_work *work,
070fb21e
NJ		 4196 struct smb2_query_info_rsp *rsp,
4197 struct ksmbd_file *fp,
4198 void *rsp_org)
e2f34481
NJ		 4199{
4200 struct ksmbd_conn *conn = work->conn;
4201 struct smb2_file_all_info *file_info;
4202 unsigned int delete_pending;
4203 struct inode *inode;
4204 struct kstat stat;
4205 int conv_len;
4206 char *filename;
4207 u64 time;
4208
4209 if (!(fp->daccess & FILE_READ_ATTRIBUTES_LE)) {
4210 ksmbd_debug(SMB, "no right to read the attributes : 0x%x\n",
070fb21e 4211 fp->daccess);
e2f34481
NJ		 4212 return -EACCES;
4213 }
4214
4215 filename = convert_to_nt_pathname(fp->filename,
4216 work->tcon->share_conf->path);
4217 if (!filename)
4218 return -ENOMEM;
4219
4220 inode = FP_INODE(fp);
4221 generic_fillattr(&init_user_ns, inode, &stat);
4222
4223 ksmbd_debug(SMB, "filename = %s\n", filename);
4224 delete_pending = ksmbd_inode_pending_delete(fp);
4225 file_info = (struct smb2_file_all_info *)rsp->Buffer;
4226
4227 file_info->CreationTime = cpu_to_le64(fp->create_time);
4228 time = ksmbd_UnixTimeToNT(stat.atime);
4229 file_info->LastAccessTime = cpu_to_le64(time);
4230 time = ksmbd_UnixTimeToNT(stat.mtime);
4231 file_info->LastWriteTime = cpu_to_le64(time);
4232 time = ksmbd_UnixTimeToNT(stat.ctime);
4233 file_info->ChangeTime = cpu_to_le64(time);
4234 file_info->Attributes = fp->f_ci->m_fattr;
4235 file_info->Pad1 = 0;
4236 file_info->AllocationSize =
4237 cpu_to_le64(get_allocation_size(inode, &stat));
4238 file_info->EndOfFile = S_ISDIR(stat.mode) ? 0 : cpu_to_le64(stat.size);
4239 file_info->NumberOfLinks =
4240 cpu_to_le32(get_nlink(&stat) - delete_pending);
4241 file_info->DeletePending = delete_pending;
4242 file_info->Directory = S_ISDIR(stat.mode) ? 1 : 0;
4243 file_info->Pad2 = 0;
4244 file_info->IndexNumber = cpu_to_le64(stat.ino);
4245 file_info->EASize = 0;
4246 file_info->AccessFlags = fp->daccess;
4247 file_info->CurrentByteOffset = cpu_to_le64(fp->filp->f_pos);
4248 file_info->Mode = fp->coption;
4249 file_info->AlignmentRequirement = 0;
070fb21e
NJ		 4250 conv_len = smbConvertToUTF16((__le16 *)file_info->FileName, filename,
4251 PATH_MAX, conn->local_nls, 0);
e2f34481
NJ		 4252 conv_len *= 2;
4253 file_info->FileNameLength = cpu_to_le32(conv_len);
4254 rsp->OutputBufferLength =
4255 cpu_to_le32(sizeof(struct smb2_file_all_info) + conv_len - 1);
4256 kfree(filename);
4257 inc_rfc1001_len(rsp_org, le32_to_cpu(rsp->OutputBufferLength));
4258 return 0;
4259}
4260
4261static void get_file_alternate_info(struct ksmbd_work *work,
070fb21e
NJ		 4262 struct smb2_query_info_rsp *rsp,
4263 struct ksmbd_file *fp,
4264 void *rsp_org)
e2f34481
NJ		 4265{
4266 struct ksmbd_conn *conn = work->conn;
4267 struct smb2_file_alt_name_info *file_info;
4268 int conv_len;
4269 char *filename;
4270
4271 filename = (char *)FP_FILENAME(fp);
4272 file_info = (struct smb2_file_alt_name_info *)rsp->Buffer;
4273 conv_len = ksmbd_extract_shortname(conn,
4274 filename,
4275 file_info->FileName);
4276 file_info->FileNameLength = cpu_to_le32(conv_len);
4277 rsp->OutputBufferLength =
4278 cpu_to_le32(sizeof(struct smb2_file_alt_name_info) + conv_len);
4279 inc_rfc1001_len(rsp_org, le32_to_cpu(rsp->OutputBufferLength));
4280}
4281
4282static void get_file_stream_info(struct ksmbd_work *work,
070fb21e
NJ		 4283 struct smb2_query_info_rsp *rsp,
4284 struct ksmbd_file *fp,
4285 void *rsp_org)
e2f34481
NJ		 4286{
4287 struct ksmbd_conn *conn = work->conn;
4288 struct smb2_file_stream_info *file_info;
4289 char *stream_name, *xattr_list = NULL, *stream_buf;
4290 struct kstat stat;
4291 struct path *path = &fp->filp->f_path;
4292 ssize_t xattr_list_len;
4293 int nbytes = 0, streamlen, stream_name_len, next, idx = 0;
4294
4295 generic_fillattr(&init_user_ns, FP_INODE(fp), &stat);
4296 file_info = (struct smb2_file_stream_info *)rsp->Buffer;
4297
4298 xattr_list_len = ksmbd_vfs_listxattr(path->dentry, &xattr_list);
4299 if (xattr_list_len < 0) {
4300 goto out;
4301 } else if (!xattr_list_len) {
4302 ksmbd_debug(SMB, "empty xattr in the file\n");
4303 goto out;
4304 }
4305
4306 while (idx < xattr_list_len) {
4307 stream_name = xattr_list + idx;
4308 streamlen = strlen(stream_name);
4309 idx += streamlen + 1;
4310
4311 ksmbd_debug(SMB, "%s, len %d\n", stream_name, streamlen);
4312
4313 if (strncmp(&stream_name[XATTR_USER_PREFIX_LEN],
64b39f4a 4314 STREAM_PREFIX, STREAM_PREFIX_LEN))
e2f34481
NJ		 4315 continue;
4316
4317 stream_name_len = streamlen - (XATTR_USER_PREFIX_LEN +
4318 STREAM_PREFIX_LEN);
4319 streamlen = stream_name_len;
4320
4321 /* plus : size */
4322 streamlen += 1;
4323 stream_buf = kmalloc(streamlen + 1, GFP_KERNEL);
4324 if (!stream_buf)
4325 break;
4326
4327 streamlen = snprintf(stream_buf, streamlen + 1,
070fb21e 4328 ":%s", &stream_name[XATTR_NAME_STREAM_LEN]);
e2f34481 4329
070fb21e 4330 file_info = (struct smb2_file_stream_info *)&rsp->Buffer[nbytes];
e2f34481 4331 streamlen = smbConvertToUTF16((__le16 *)file_info->StreamName,
070fb21e
NJ		 4332 stream_buf, streamlen,
4333 conn->local_nls, 0);
e2f34481
NJ		 4334 streamlen *= 2;
4335 kfree(stream_buf);
4336 file_info->StreamNameLength = cpu_to_le32(streamlen);
4337 file_info->StreamSize = cpu_to_le64(stream_name_len);
4338 file_info->StreamAllocationSize = cpu_to_le64(stream_name_len);
4339
4340 next = sizeof(struct smb2_file_stream_info) + streamlen;
4341 nbytes += next;
4342 file_info->NextEntryOffset = cpu_to_le32(next);
4343 }
4344
4345 if (nbytes) {
4346 file_info = (struct smb2_file_stream_info *)
4347 &rsp->Buffer[nbytes];
4348 streamlen = smbConvertToUTF16((__le16 *)file_info->StreamName,
070fb21e 4349 "::$DATA", 7, conn->local_nls, 0);
e2f34481
NJ		 4350 streamlen *= 2;
4351 file_info->StreamNameLength = cpu_to_le32(streamlen);
4352 file_info->StreamSize = S_ISDIR(stat.mode) ? 0 :
4353 cpu_to_le64(stat.size);
4354 file_info->StreamAllocationSize = S_ISDIR(stat.mode) ? 0 :
4355 cpu_to_le64(stat.size);
4356 nbytes += sizeof(struct smb2_file_stream_info) + streamlen;
4357 }
4358
4359 /* last entry offset should be 0 */
4360 file_info->NextEntryOffset = 0;
4361out:
79f6b11a 4362 kvfree(xattr_list);
e2f34481
NJ		 4363
4364 rsp->OutputBufferLength = cpu_to_le32(nbytes);
4365 inc_rfc1001_len(rsp_org, nbytes);
4366}
4367
4368static void get_file_internal_info(struct smb2_query_info_rsp *rsp,
070fb21e 4369 struct ksmbd_file *fp, void *rsp_org)
e2f34481
NJ		 4370{
4371 struct smb2_file_internal_info *file_info;
4372 struct kstat stat;
4373
4374 generic_fillattr(&init_user_ns, FP_INODE(fp), &stat);
4375 file_info = (struct smb2_file_internal_info *)rsp->Buffer;
4376 file_info->IndexNumber = cpu_to_le64(stat.ino);
4377 rsp->OutputBufferLength =
4378 cpu_to_le32(sizeof(struct smb2_file_internal_info));
4379 inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_internal_info));
4380}
4381
4382static int get_file_network_open_info(struct smb2_query_info_rsp *rsp,
070fb21e 4383 struct ksmbd_file *fp, void *rsp_org)
e2f34481
NJ		 4384{
4385 struct smb2_file_ntwrk_info *file_info;
4386 struct inode *inode;
4387 struct kstat stat;
4388 u64 time;
4389
4390 if (!(fp->daccess & FILE_READ_ATTRIBUTES_LE)) {
bde1694a
NJ		 4391 pr_err("no right to read the attributes : 0x%x\n",
4392 fp->daccess);
e2f34481
NJ		 4393 return -EACCES;
4394 }
4395
4396 file_info = (struct smb2_file_ntwrk_info *)rsp->Buffer;
4397
4398 inode = FP_INODE(fp);
4399 generic_fillattr(&init_user_ns, inode, &stat);
4400
4401 file_info->CreationTime = cpu_to_le64(fp->create_time);
4402 time = ksmbd_UnixTimeToNT(stat.atime);
4403 file_info->LastAccessTime = cpu_to_le64(time);
4404 time = ksmbd_UnixTimeToNT(stat.mtime);
4405 file_info->LastWriteTime = cpu_to_le64(time);
4406 time = ksmbd_UnixTimeToNT(stat.ctime);
4407 file_info->ChangeTime = cpu_to_le64(time);
4408 file_info->Attributes = fp->f_ci->m_fattr;
4409 file_info->AllocationSize =
4410 cpu_to_le64(get_allocation_size(inode, &stat));
4411 file_info->EndOfFile = S_ISDIR(stat.mode) ? 0 : cpu_to_le64(stat.size);
4412 file_info->Reserved = cpu_to_le32(0);
4413 rsp->OutputBufferLength =
4414 cpu_to_le32(sizeof(struct smb2_file_ntwrk_info));
4415 inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_ntwrk_info));
4416 return 0;
4417}
4418
64b39f4a 4419static void get_file_ea_info(struct smb2_query_info_rsp *rsp, void *rsp_org)
e2f34481
NJ		 4420{
4421 struct smb2_file_ea_info *file_info;
4422
4423 file_info = (struct smb2_file_ea_info *)rsp->Buffer;
4424 file_info->EASize = 0;
4425 rsp->OutputBufferLength =
4426 cpu_to_le32(sizeof(struct smb2_file_ea_info));
4427 inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_ea_info));
4428}
4429
4430static void get_file_position_info(struct smb2_query_info_rsp *rsp,
070fb21e 4431 struct ksmbd_file *fp, void *rsp_org)
e2f34481
NJ		 4432{
4433 struct smb2_file_pos_info *file_info;
4434
4435 file_info = (struct smb2_file_pos_info *)rsp->Buffer;
4436 file_info->CurrentByteOffset = cpu_to_le64(fp->filp->f_pos);
4437 rsp->OutputBufferLength =
4438 cpu_to_le32(sizeof(struct smb2_file_pos_info));
4439 inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_pos_info));
4440}
4441
4442static void get_file_mode_info(struct smb2_query_info_rsp *rsp,
070fb21e 4443 struct ksmbd_file *fp, void *rsp_org)
e2f34481
NJ		 4444{
4445 struct smb2_file_mode_info *file_info;
4446
4447 file_info = (struct smb2_file_mode_info *)rsp->Buffer;
4448 file_info->Mode = fp->coption & FILE_MODE_INFO_MASK;
4449 rsp->OutputBufferLength =
4450 cpu_to_le32(sizeof(struct smb2_file_mode_info));
4451 inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_mode_info));
4452}
4453
4454static void get_file_compression_info(struct smb2_query_info_rsp *rsp,
070fb21e 4455 struct ksmbd_file *fp, void *rsp_org)
e2f34481
NJ		 4456{
4457 struct smb2_file_comp_info *file_info;
4458 struct kstat stat;
4459
4460 generic_fillattr(&init_user_ns, FP_INODE(fp), &stat);
4461
4462 file_info = (struct smb2_file_comp_info *)rsp->Buffer;
4463 file_info->CompressedFileSize = cpu_to_le64(stat.blocks << 9);
4464 file_info->CompressionFormat = COMPRESSION_FORMAT_NONE;
4465 file_info->CompressionUnitShift = 0;
4466 file_info->ChunkShift = 0;
4467 file_info->ClusterShift = 0;
4468 memset(&file_info->Reserved[0], 0, 3);
4469
4470 rsp->OutputBufferLength =
4471 cpu_to_le32(sizeof(struct smb2_file_comp_info));
4472 inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_comp_info));
4473}
4474
4475static int get_file_attribute_tag_info(struct smb2_query_info_rsp *rsp,
070fb21e 4476 struct ksmbd_file *fp, void *rsp_org)
e2f34481
NJ		 4477{
4478 struct smb2_file_attr_tag_info *file_info;
4479
4480 if (!(fp->daccess & FILE_READ_ATTRIBUTES_LE)) {
bde1694a
NJ		 4481 pr_err("no right to read the attributes : 0x%x\n",
4482 fp->daccess);
e2f34481
NJ		 4483 return -EACCES;
4484 }
4485
4486 file_info = (struct smb2_file_attr_tag_info *)rsp->Buffer;
4487 file_info->FileAttributes = fp->f_ci->m_fattr;
4488 file_info->ReparseTag = 0;
4489 rsp->OutputBufferLength =
4490 cpu_to_le32(sizeof(struct smb2_file_attr_tag_info));
070fb21e 4491 inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_attr_tag_info));
e2f34481
NJ		 4492 return 0;
4493}
4494
4495static int find_file_posix_info(struct smb2_query_info_rsp *rsp,
070fb21e 4496 struct ksmbd_file *fp, void *rsp_org)
e2f34481
NJ		 4497{
4498 struct smb311_posix_qinfo *file_info;
4499 struct inode *inode = FP_INODE(fp);
4500 u64 time;
4501
4502 file_info = (struct smb311_posix_qinfo *)rsp->Buffer;
4503 file_info->CreationTime = cpu_to_le64(fp->create_time);
4504 time = ksmbd_UnixTimeToNT(inode->i_atime);
4505 file_info->LastAccessTime = cpu_to_le64(time);
4506 time = ksmbd_UnixTimeToNT(inode->i_mtime);
4507 file_info->LastWriteTime = cpu_to_le64(time);
4508 time = ksmbd_UnixTimeToNT(inode->i_ctime);
4509 file_info->ChangeTime = cpu_to_le64(time);
4510 file_info->DosAttributes = fp->f_ci->m_fattr;
4511 file_info->Inode = cpu_to_le64(inode->i_ino);
4512 file_info->EndOfFile = cpu_to_le64(inode->i_size);
4513 file_info->AllocationSize = cpu_to_le64(inode->i_blocks << 9);
4514 file_info->HardLinks = cpu_to_le32(inode->i_nlink);
4515 file_info->Mode = cpu_to_le32(inode->i_mode);
4516 file_info->DeviceId = cpu_to_le32(inode->i_rdev);
4517 rsp->OutputBufferLength =
4518 cpu_to_le32(sizeof(struct smb311_posix_qinfo));
64b39f4a 4519 inc_rfc1001_len(rsp_org, sizeof(struct smb311_posix_qinfo));
e2f34481
NJ		 4520 return 0;
4521}
4522
e2f34481 4523static int smb2_get_info_file(struct ksmbd_work *work,
070fb21e
NJ		 4524 struct smb2_query_info_req *req,
4525 struct smb2_query_info_rsp *rsp, void *rsp_org)
e2f34481
NJ		 4526{
4527 struct ksmbd_file *fp;
4528 int fileinfoclass = 0;
4529 int rc = 0;
4530 int file_infoclass_size;
4531 unsigned int id = KSMBD_NO_FID, pid = KSMBD_NO_FID;
4532
4533 if (test_share_config_flag(work->tcon->share_conf,
64b39f4a 4534 KSMBD_SHARE_FLAG_PIPE)) {
e2f34481
NJ		 4535 /* smb2 info file called for pipe */
4536 return smb2_get_info_file_pipe(work->sess, req, rsp);
4537 }
4538
4539 if (work->next_smb2_rcv_hdr_off) {
4540 if (!HAS_FILE_ID(le64_to_cpu(req->VolatileFileId))) {
4541 ksmbd_debug(SMB, "Compound request set FID = %u\n",
070fb21e 4542 work->compound_fid);
e2f34481
NJ		 4543 id = work->compound_fid;
4544 pid = work->compound_pfid;
4545 }
4546 }
4547
4548 if (!HAS_FILE_ID(id)) {
4549 id = le64_to_cpu(req->VolatileFileId);
4550 pid = le64_to_cpu(req->PersistentFileId);
4551 }
4552
4553 fp = ksmbd_lookup_fd_slow(work, id, pid);
4554 if (!fp)
4555 return -ENOENT;
4556
4557 fileinfoclass = req->FileInfoClass;
4558
4559 switch (fileinfoclass) {
4560 case FILE_ACCESS_INFORMATION:
4561 get_file_access_info(rsp, fp, rsp_org);
4562 file_infoclass_size = FILE_ACCESS_INFORMATION_SIZE;
4563 break;
4564
4565 case FILE_BASIC_INFORMATION:
4566 rc = get_file_basic_info(rsp, fp, rsp_org);
4567 file_infoclass_size = FILE_BASIC_INFORMATION_SIZE;
4568 break;
4569
4570 case FILE_STANDARD_INFORMATION:
4571 get_file_standard_info(rsp, fp, rsp_org);
4572 file_infoclass_size = FILE_STANDARD_INFORMATION_SIZE;
4573 break;
4574
4575 case FILE_ALIGNMENT_INFORMATION:
4576 get_file_alignment_info(rsp, rsp_org);
4577 file_infoclass_size = FILE_ALIGNMENT_INFORMATION_SIZE;
4578 break;
4579
4580 case FILE_ALL_INFORMATION:
4581 rc = get_file_all_info(work, rsp, fp, rsp_org);
4582 file_infoclass_size = FILE_ALL_INFORMATION_SIZE;
4583 break;
4584
4585 case FILE_ALTERNATE_NAME_INFORMATION:
4586 get_file_alternate_info(work, rsp, fp, rsp_org);
4587 file_infoclass_size = FILE_ALTERNATE_NAME_INFORMATION_SIZE;
4588 break;
4589
4590 case FILE_STREAM_INFORMATION:
4591 get_file_stream_info(work, rsp, fp, rsp_org);
4592 file_infoclass_size = FILE_STREAM_INFORMATION_SIZE;
4593 break;
4594
4595 case FILE_INTERNAL_INFORMATION:
4596 get_file_internal_info(rsp, fp, rsp_org);
4597 file_infoclass_size = FILE_INTERNAL_INFORMATION_SIZE;
4598 break;
4599
4600 case FILE_NETWORK_OPEN_INFORMATION:
4601 rc = get_file_network_open_info(rsp, fp, rsp_org);
4602 file_infoclass_size = FILE_NETWORK_OPEN_INFORMATION_SIZE;
4603 break;
4604
4605 case FILE_EA_INFORMATION:
4606 get_file_ea_info(rsp, rsp_org);
4607 file_infoclass_size = FILE_EA_INFORMATION_SIZE;
4608 break;
4609
4610 case FILE_FULL_EA_INFORMATION:
4611 rc = smb2_get_ea(work, fp, req, rsp, rsp_org);
4612 file_infoclass_size = FILE_FULL_EA_INFORMATION_SIZE;
4613 break;
4614
4615 case FILE_POSITION_INFORMATION:
4616 get_file_position_info(rsp, fp, rsp_org);
4617 file_infoclass_size = FILE_POSITION_INFORMATION_SIZE;
4618 break;
4619
4620 case FILE_MODE_INFORMATION:
4621 get_file_mode_info(rsp, fp, rsp_org);
4622 file_infoclass_size = FILE_MODE_INFORMATION_SIZE;
4623 break;
4624
4625 case FILE_COMPRESSION_INFORMATION:
4626 get_file_compression_info(rsp, fp, rsp_org);
4627 file_infoclass_size = FILE_COMPRESSION_INFORMATION_SIZE;
4628 break;
4629
4630 case FILE_ATTRIBUTE_TAG_INFORMATION:
4631 rc = get_file_attribute_tag_info(rsp, fp, rsp_org);
4632 file_infoclass_size = FILE_ATTRIBUTE_TAG_INFORMATION_SIZE;
4633 break;
4634 case SMB_FIND_FILE_POSIX_INFO:
4635 if (!work->tcon->posix_extensions) {
bde1694a 4636 pr_err("client doesn't negotiate with SMB3.1.1 POSIX Extensions\n");
e2f34481
NJ		 4637 rc = -EOPNOTSUPP;
4638 } else {
4639 rc = find_file_posix_info(rsp, fp, rsp_org);
4640 file_infoclass_size = sizeof(struct smb311_posix_qinfo);
4641 }
4642 break;
4643 default:
4644 ksmbd_debug(SMB, "fileinfoclass %d not supported yet\n",
4645 fileinfoclass);
4646 rc = -EOPNOTSUPP;
4647 }
4648 if (!rc)
4649 rc = buffer_check_err(le32_to_cpu(req->OutputBufferLength),
4650 rsp,
4651 file_infoclass_size);
4652 ksmbd_fd_put(work, fp);
4653 return rc;
4654}
4655
e2f34481 4656static int smb2_get_info_filesystem(struct ksmbd_work *work,
070fb21e
NJ		 4657 struct smb2_query_info_req *req,
4658 struct smb2_query_info_rsp *rsp, void *rsp_org)
e2f34481
NJ		 4659{
4660 struct ksmbd_session *sess = work->sess;
4661 struct ksmbd_conn *conn = sess->conn;
4662 struct ksmbd_share_config *share = work->tcon->share_conf;
4663 int fsinfoclass = 0;
4664 struct kstatfs stfs;
4665 struct path path;
4666 int rc = 0, len;
4667 int fs_infoclass_size = 0;
a6a5fa77 4668 int lookup_flags = 0;
e2f34481 4669
a6a5fa77
HL		 4670 if (test_share_config_flag(share, KSMBD_SHARE_FLAG_FOLLOW_SYMLINKS))
4671 lookup_flags = LOOKUP_FOLLOW;
4672
4673 rc = ksmbd_vfs_kern_path(share->path, lookup_flags, &path, 0);
e2f34481 4674 if (rc) {
bde1694a 4675 pr_err("cannot create vfs path\n");
e2f34481
NJ		 4676 return -EIO;
4677 }
4678
4679 rc = vfs_statfs(&path, &stfs);
4680 if (rc) {
bde1694a 4681 pr_err("cannot do stat of path %s\n", share->path);
e2f34481
NJ		 4682 path_put(&path);
4683 return -EIO;
4684 }
4685
4686 fsinfoclass = req->FileInfoClass;
4687
4688 switch (fsinfoclass) {
4689 case FS_DEVICE_INFORMATION:
4690 {
4691 struct filesystem_device_info *info;
4692
4693 info = (struct filesystem_device_info *)rsp->Buffer;
4694
4695 info->DeviceType = cpu_to_le32(stfs.f_type);
4696 info->DeviceCharacteristics = cpu_to_le32(0x00000020);
4697 rsp->OutputBufferLength = cpu_to_le32(8);
4698 inc_rfc1001_len(rsp_org, 8);
4699 fs_infoclass_size = FS_DEVICE_INFORMATION_SIZE;
4700 break;
4701 }
4702 case FS_ATTRIBUTE_INFORMATION:
4703 {
4704 struct filesystem_attribute_info *info;
4705 size_t sz;
4706
4707 info = (struct filesystem_attribute_info *)rsp->Buffer;
4708 info->Attributes = cpu_to_le32(FILE_SUPPORTS_OBJECT_IDS |
4709 FILE_PERSISTENT_ACLS |
4710 FILE_UNICODE_ON_DISK |
4711 FILE_CASE_PRESERVED_NAMES |
eb817368
NJ		 4712 FILE_CASE_SENSITIVE_SEARCH |
4713 FILE_SUPPORTS_BLOCK_REFCOUNTING);
e2f34481
NJ		 4714
4715 info->Attributes |= cpu_to_le32(server_conf.share_fake_fscaps);
4716
4717 info->MaxPathNameComponentLength = cpu_to_le32(stfs.f_namelen);
4718 len = smbConvertToUTF16((__le16 *)info->FileSystemName,
4719 "NTFS", PATH_MAX, conn->local_nls, 0);
4720 len = len * 2;
4721 info->FileSystemNameLen = cpu_to_le32(len);
4722 sz = sizeof(struct filesystem_attribute_info) - 2 + len;
4723 rsp->OutputBufferLength = cpu_to_le32(sz);
4724 inc_rfc1001_len(rsp_org, sz);
4725 fs_infoclass_size = FS_ATTRIBUTE_INFORMATION_SIZE;
4726 break;
4727 }
4728 case FS_VOLUME_INFORMATION:
4729 {
4730 struct filesystem_vol_info *info;
4731 size_t sz;
4732
4733 info = (struct filesystem_vol_info *)(rsp->Buffer);
4734 info->VolumeCreationTime = 0;
4735 /* Taking dummy value of serial number*/
4736 info->SerialNumber = cpu_to_le32(0xbc3ac512);
4737 len = smbConvertToUTF16((__le16 *)info->VolumeLabel,
4738 share->name, PATH_MAX,
4739 conn->local_nls, 0);
4740 len = len * 2;
4741 info->VolumeLabelSize = cpu_to_le32(len);
4742 info->Reserved = 0;
4743 sz = sizeof(struct filesystem_vol_info) - 2 + len;
4744 rsp->OutputBufferLength = cpu_to_le32(sz);
4745 inc_rfc1001_len(rsp_org, sz);
4746 fs_infoclass_size = FS_VOLUME_INFORMATION_SIZE;
4747 break;
4748 }
4749 case FS_SIZE_INFORMATION:
4750 {
4751 struct filesystem_info *info;
e2f34481
NJ		 4752
4753 info = (struct filesystem_info *)(rsp->Buffer);
e2f34481
NJ		 4754 info->TotalAllocationUnits = cpu_to_le64(stfs.f_blocks);
4755 info->FreeAllocationUnits = cpu_to_le64(stfs.f_bfree);
ee81cae1
NJ		 4756 info->SectorsPerAllocationUnit = cpu_to_le32(1);
4757 info->BytesPerSector = cpu_to_le32(stfs.f_bsize);
e2f34481
NJ		 4758 rsp->OutputBufferLength = cpu_to_le32(24);
4759 inc_rfc1001_len(rsp_org, 24);
4760 fs_infoclass_size = FS_SIZE_INFORMATION_SIZE;
4761 break;
4762 }
4763 case FS_FULL_SIZE_INFORMATION:
4764 {
4765 struct smb2_fs_full_size_info *info;
e2f34481
NJ		 4766
4767 info = (struct smb2_fs_full_size_info *)(rsp->Buffer);
e2f34481
NJ		 4768 info->TotalAllocationUnits = cpu_to_le64(stfs.f_blocks);
4769 info->CallerAvailableAllocationUnits =
4770 cpu_to_le64(stfs.f_bavail);
4771 info->ActualAvailableAllocationUnits =
4772 cpu_to_le64(stfs.f_bfree);
ee81cae1
NJ		 4773 info->SectorsPerAllocationUnit = cpu_to_le32(1);
4774 info->BytesPerSector = cpu_to_le32(stfs.f_bsize);
e2f34481
NJ		 4775 rsp->OutputBufferLength = cpu_to_le32(32);
4776 inc_rfc1001_len(rsp_org, 32);
4777 fs_infoclass_size = FS_FULL_SIZE_INFORMATION_SIZE;
4778 break;
4779 }
4780 case FS_OBJECT_ID_INFORMATION:
4781 {
4782 struct object_id_info *info;
4783
4784 info = (struct object_id_info *)(rsp->Buffer);
4785
4786 if (!user_guest(sess->user))
4787 memcpy(info->objid, user_passkey(sess->user), 16);
4788 else
4789 memset(info->objid, 0, 16);
4790
4791 info->extended_info.magic = cpu_to_le32(EXTENDED_INFO_MAGIC);
4792 info->extended_info.version = cpu_to_le32(1);
4793 info->extended_info.release = cpu_to_le32(1);
4794 info->extended_info.rel_date = 0;
64b39f4a 4795 memcpy(info->extended_info.version_string, "1.1.0", strlen("1.1.0"));
e2f34481
NJ		 4796 rsp->OutputBufferLength = cpu_to_le32(64);
4797 inc_rfc1001_len(rsp_org, 64);
4798 fs_infoclass_size = FS_OBJECT_ID_INFORMATION_SIZE;
4799 break;
4800 }
4801 case FS_SECTOR_SIZE_INFORMATION:
4802 {
4803 struct smb3_fs_ss_info *info;
e2f34481
NJ		 4804
4805 info = (struct smb3_fs_ss_info *)(rsp->Buffer);
e2f34481 4806
131bac1e 4807 info->LogicalBytesPerSector = cpu_to_le32(stfs.f_bsize);
e2f34481 4808 info->PhysicalBytesPerSectorForAtomicity =
131bac1e
NJ		 4809 cpu_to_le32(stfs.f_bsize);
4810 info->PhysicalBytesPerSectorForPerf = cpu_to_le32(stfs.f_bsize);
e2f34481 4811 info->FSEffPhysicalBytesPerSectorForAtomicity =
131bac1e 4812 cpu_to_le32(stfs.f_bsize);
e2f34481
NJ		 4813 info->Flags = cpu_to_le32(SSINFO_FLAGS_ALIGNED_DEVICE |
4814 SSINFO_FLAGS_PARTITION_ALIGNED_ON_DEVICE);
4815 info->ByteOffsetForSectorAlignment = 0;
4816 info->ByteOffsetForPartitionAlignment = 0;
4817 rsp->OutputBufferLength = cpu_to_le32(28);
4818 inc_rfc1001_len(rsp_org, 28);
4819 fs_infoclass_size = FS_SECTOR_SIZE_INFORMATION_SIZE;
4820 break;
4821 }
4822 case FS_CONTROL_INFORMATION:
4823 {
4824 /*
4825 * TODO : The current implementation is based on
4826 * test result with win7(NTFS) server. It's need to
4827 * modify this to get valid Quota values
4828 * from Linux kernel
4829 */
4830 struct smb2_fs_control_info *info;
4831
4832 info = (struct smb2_fs_control_info *)(rsp->Buffer);
4833 info->FreeSpaceStartFiltering = 0;
4834 info->FreeSpaceThreshold = 0;
4835 info->FreeSpaceStopFiltering = 0;
4836 info->DefaultQuotaThreshold = cpu_to_le64(SMB2_NO_FID);
4837 info->DefaultQuotaLimit = cpu_to_le64(SMB2_NO_FID);
4838 info->Padding = 0;
4839 rsp->OutputBufferLength = cpu_to_le32(48);
4840 inc_rfc1001_len(rsp_org, 48);
4841 fs_infoclass_size = FS_CONTROL_INFORMATION_SIZE;
4842 break;
4843 }
4844 case FS_POSIX_INFORMATION:
4845 {
4846 struct filesystem_posix_info *info;
e2f34481
NJ		 4847
4848 if (!work->tcon->posix_extensions) {
bde1694a 4849 pr_err("client doesn't negotiate with SMB3.1.1 POSIX Extensions\n");
e2f34481
NJ		 4850 rc = -EOPNOTSUPP;
4851 } else {
4852 info = (struct filesystem_posix_info *)(rsp->Buffer);
ee81cae1 4853 info->OptimalTransferSize = cpu_to_le32(stfs.f_bsize);
e2f34481
NJ		 4854 info->BlockSize = cpu_to_le32(stfs.f_bsize);
4855 info->TotalBlocks = cpu_to_le64(stfs.f_blocks);
4856 info->BlocksAvail = cpu_to_le64(stfs.f_bfree);
4857 info->UserBlocksAvail = cpu_to_le64(stfs.f_bavail);
4858 info->TotalFileNodes = cpu_to_le64(stfs.f_files);
4859 info->FreeFileNodes = cpu_to_le64(stfs.f_ffree);
4860 rsp->OutputBufferLength = cpu_to_le32(56);
4861 inc_rfc1001_len(rsp_org, 56);
4862 fs_infoclass_size = FS_POSIX_INFORMATION_SIZE;
4863 }
4864 break;
4865 }
4866 default:
4867 path_put(&path);
4868 return -EOPNOTSUPP;
4869 }
4870 rc = buffer_check_err(le32_to_cpu(req->OutputBufferLength),
4871 rsp,
4872 fs_infoclass_size);
4873 path_put(&path);
4874 return rc;
4875}
4876
4877static int smb2_get_info_sec(struct ksmbd_work *work,
070fb21e
NJ		 4878 struct smb2_query_info_req *req,
4879 struct smb2_query_info_rsp *rsp, void *rsp_org)
e2f34481
NJ		 4880{
4881 struct ksmbd_file *fp;
4882 struct smb_ntsd *pntsd = (struct smb_ntsd *)rsp->Buffer, *ppntsd = NULL;
4883 struct smb_fattr fattr = {{0}};
4884 struct inode *inode;
4885 __u32 secdesclen;
4886 unsigned int id = KSMBD_NO_FID, pid = KSMBD_NO_FID;
4887 int addition_info = le32_to_cpu(req->AdditionalInformation);
4888 int rc;
4889
ced2b26a
SG		 4890 if (addition_info & ~(OWNER_SECINFO | GROUP_SECINFO | DACL_SECINFO)) {
4891 ksmbd_debug(SMB, "Unsupported addition info: 0x%x)\n",
070fb21e 4892 addition_info);
ced2b26a
SG		 4893
4894 pntsd->revision = cpu_to_le16(1);
4895 pntsd->type = cpu_to_le16(SELF_RELATIVE | DACL_PROTECTED);
4896 pntsd->osidoffset = 0;
4897 pntsd->gsidoffset = 0;
4898 pntsd->sacloffset = 0;
4899 pntsd->dacloffset = 0;
4900
4901 secdesclen = sizeof(struct smb_ntsd);
4902 rsp->OutputBufferLength = cpu_to_le32(secdesclen);
4903 inc_rfc1001_len(rsp_org, secdesclen);
4904
4905 return 0;
4906 }
4907
e2f34481
NJ		 4908 if (work->next_smb2_rcv_hdr_off) {
4909 if (!HAS_FILE_ID(le64_to_cpu(req->VolatileFileId))) {
4910 ksmbd_debug(SMB, "Compound request set FID = %u\n",
070fb21e 4911 work->compound_fid);
e2f34481
NJ		 4912 id = work->compound_fid;
4913 pid = work->compound_pfid;
4914 }
4915 }
4916
4917 if (!HAS_FILE_ID(id)) {
4918 id = le64_to_cpu(req->VolatileFileId);
4919 pid = le64_to_cpu(req->PersistentFileId);
4920 }
4921
4922 fp = ksmbd_lookup_fd_slow(work, id, pid);
4923 if (!fp)
4924 return -ENOENT;
4925
4926 inode = FP_INODE(fp);
3d47e546 4927 ksmbd_acls_fattr(&fattr, inode);
e2f34481
NJ		 4928
4929 if (test_share_config_flag(work->tcon->share_conf,
64b39f4a 4930 KSMBD_SHARE_FLAG_ACL_XATTR))
e2f34481
NJ		 4931 ksmbd_vfs_get_sd_xattr(work->conn, fp->filp->f_path.dentry, &ppntsd);
4932
4933 rc = build_sec_desc(pntsd, ppntsd, addition_info, &secdesclen, &fattr);
4934 posix_acl_release(fattr.cf_acls);
4935 posix_acl_release(fattr.cf_dacls);
4936 kfree(ppntsd);
4937 ksmbd_fd_put(work, fp);
4938 if (rc)
4939 return rc;
4940
4941 rsp->OutputBufferLength = cpu_to_le32(secdesclen);
4942 inc_rfc1001_len(rsp_org, secdesclen);
4943 return 0;
4944}
4945
4946/**
4947 * smb2_query_info() - handler for smb2 query info command
4948 * @work: smb work containing query info request buffer
4949 *
4950 * Return: 0 on success, otherwise error
4951 */
4952int smb2_query_info(struct ksmbd_work *work)
4953{
4954 struct smb2_query_info_req *req;
4955 struct smb2_query_info_rsp *rsp, *rsp_org;
4956 int rc = 0;
4957
e5066499 4958 rsp_org = work->response_buf;
e2f34481
NJ		 4959 WORK_BUFFERS(work, req, rsp);
4960
4961 ksmbd_debug(SMB, "GOT query info request\n");
4962
4963 switch (req->InfoType) {
4964 case SMB2_O_INFO_FILE:
4965 ksmbd_debug(SMB, "GOT SMB2_O_INFO_FILE\n");
4966 rc = smb2_get_info_file(work, req, rsp, (void *)rsp_org);
4967 break;
4968 case SMB2_O_INFO_FILESYSTEM:
4969 ksmbd_debug(SMB, "GOT SMB2_O_INFO_FILESYSTEM\n");
4970 rc = smb2_get_info_filesystem(work, req, rsp, (void *)rsp_org);
4971 break;
4972 case SMB2_O_INFO_SECURITY:
4973 ksmbd_debug(SMB, "GOT SMB2_O_INFO_SECURITY\n");
4974 rc = smb2_get_info_sec(work, req, rsp, (void *)rsp_org);
4975 break;
4976 default:
4977 ksmbd_debug(SMB, "InfoType %d not supported yet\n",
070fb21e 4978 req->InfoType);
e2f34481
NJ		 4979 rc = -EOPNOTSUPP;
4980 }
4981
4982 if (rc < 0) {
4983 if (rc == -EACCES)
4984 rsp->hdr.Status = STATUS_ACCESS_DENIED;
4985 else if (rc == -ENOENT)
4986 rsp->hdr.Status = STATUS_FILE_CLOSED;
4987 else if (rc == -EIO)
4988 rsp->hdr.Status = STATUS_UNEXPECTED_IO_ERROR;
4989 else if (rc == -EOPNOTSUPP || rsp->hdr.Status == 0)
4990 rsp->hdr.Status = STATUS_INVALID_INFO_CLASS;
4991 smb2_set_err_rsp(work);
4992
4993 ksmbd_debug(SMB, "error while processing smb2 query rc = %d\n",
070fb21e 4994 rc);
e2f34481
NJ		 4995 return rc;
4996 }
4997 rsp->StructureSize = cpu_to_le16(9);
4998 rsp->OutputBufferOffset = cpu_to_le16(72);
4999 inc_rfc1001_len(rsp_org, 8);
5000 return 0;
5001}
5002
5003/**
5004 * smb2_close_pipe() - handler for closing IPC pipe
5005 * @work: smb work containing close request buffer
5006 *
5007 * Return: 0
5008 */
5009static noinline int smb2_close_pipe(struct ksmbd_work *work)
5010{
64b39f4a 5011 u64 id;
e5066499
NJ		 5012 struct smb2_close_req *req = work->request_buf;
5013 struct smb2_close_rsp *rsp = work->response_buf;
e2f34481
NJ		 5014
5015 id = le64_to_cpu(req->VolatileFileId);
5016 ksmbd_session_rpc_close(work->sess, id);
5017
5018 rsp->StructureSize = cpu_to_le16(60);
5019 rsp->Flags = 0;
5020 rsp->Reserved = 0;
5021 rsp->CreationTime = 0;
5022 rsp->LastAccessTime = 0;
5023 rsp->LastWriteTime = 0;
5024 rsp->ChangeTime = 0;
5025 rsp->AllocationSize = 0;
5026 rsp->EndOfFile = 0;
5027 rsp->Attributes = 0;
5028 inc_rfc1001_len(rsp, 60);
5029 return 0;
5030}
5031
5032/**
5033 * smb2_close() - handler for smb2 close file command
5034 * @work: smb work containing close request buffer
5035 *
5036 * Return: 0
5037 */
5038int smb2_close(struct ksmbd_work *work)
5039{
5040 unsigned int volatile_id = KSMBD_NO_FID;
64b39f4a 5041 u64 sess_id;
e2f34481
NJ		 5042 struct smb2_close_req *req;
5043 struct smb2_close_rsp *rsp;
5044 struct smb2_close_rsp *rsp_org;
5045 struct ksmbd_conn *conn = work->conn;
5046 struct ksmbd_file *fp;
5047 struct inode *inode;
5048 u64 time;
5049 int err = 0;
5050
e5066499 5051 rsp_org = work->response_buf;
e2f34481
NJ		 5052 WORK_BUFFERS(work, req, rsp);
5053
5054 if (test_share_config_flag(work->tcon->share_conf,
5055 KSMBD_SHARE_FLAG_PIPE)) {
5056 ksmbd_debug(SMB, "IPC pipe close request\n");
5057 return smb2_close_pipe(work);
5058 }
5059
5060 sess_id = le64_to_cpu(req->hdr.SessionId);
5061 if (req->hdr.Flags & SMB2_FLAGS_RELATED_OPERATIONS)
5062 sess_id = work->compound_sid;
5063
5064 work->compound_sid = 0;
64b39f4a 5065 if (check_session_id(conn, sess_id)) {
e2f34481 5066 work->compound_sid = sess_id;
64b39f4a 5067 } else {
e2f34481
NJ		 5068 rsp->hdr.Status = STATUS_USER_SESSION_DELETED;
5069 if (req->hdr.Flags & SMB2_FLAGS_RELATED_OPERATIONS)
5070 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
5071 err = -EBADF;
5072 goto out;
5073 }
5074
5075 if (work->next_smb2_rcv_hdr_off &&
64b39f4a 5076 !HAS_FILE_ID(le64_to_cpu(req->VolatileFileId))) {
e2f34481
NJ		 5077 if (!HAS_FILE_ID(work->compound_fid)) {
5078 /* file already closed, return FILE_CLOSED */
5079 ksmbd_debug(SMB, "file already closed\n");
5080 rsp->hdr.Status = STATUS_FILE_CLOSED;
5081 err = -EBADF;
5082 goto out;
5083 } else {
5084 ksmbd_debug(SMB, "Compound request set FID = %u:%u\n",
070fb21e
NJ		 5085 work->compound_fid,
5086 work->compound_pfid);
e2f34481
NJ		 5087 volatile_id = work->compound_fid;
5088
5089 /* file closed, stored id is not valid anymore */
5090 work->compound_fid = KSMBD_NO_FID;
5091 work->compound_pfid = KSMBD_NO_FID;
5092 }
5093 } else {
5094 volatile_id = le64_to_cpu(req->VolatileFileId);
5095 }
5096 ksmbd_debug(SMB, "volatile_id = %u\n", volatile_id);
5097
5098 rsp->StructureSize = cpu_to_le16(60);
5099 rsp->Reserved = 0;
5100
5101 if (req->Flags == SMB2_CLOSE_FLAG_POSTQUERY_ATTRIB) {
5102 fp = ksmbd_lookup_fd_fast(work, volatile_id);
5103 if (!fp) {
5104 err = -ENOENT;
5105 goto out;
5106 }
5107
5108 inode = FP_INODE(fp);
5109 rsp->Flags = SMB2_CLOSE_FLAG_POSTQUERY_ATTRIB;
5110 rsp->AllocationSize = S_ISDIR(inode->i_mode) ? 0 :
5111 cpu_to_le64(inode->i_blocks << 9);
5112 rsp->EndOfFile = cpu_to_le64(inode->i_size);
5113 rsp->Attributes = fp->f_ci->m_fattr;
5114 rsp->CreationTime = cpu_to_le64(fp->create_time);
5115 time = ksmbd_UnixTimeToNT(inode->i_atime);
5116 rsp->LastAccessTime = cpu_to_le64(time);
5117 time = ksmbd_UnixTimeToNT(inode->i_mtime);
5118 rsp->LastWriteTime = cpu_to_le64(time);
5119 time = ksmbd_UnixTimeToNT(inode->i_ctime);
5120 rsp->ChangeTime = cpu_to_le64(time);
5121 ksmbd_fd_put(work, fp);
5122 } else {
5123 rsp->Flags = 0;
5124 rsp->AllocationSize = 0;
5125 rsp->EndOfFile = 0;
5126 rsp->Attributes = 0;
5127 rsp->CreationTime = 0;
5128 rsp->LastAccessTime = 0;
5129 rsp->LastWriteTime = 0;
5130 rsp->ChangeTime = 0;
5131 }
5132
5133 err = ksmbd_close_fd(work, volatile_id);
5134out:
5135 if (err) {
5136 if (rsp->hdr.Status == 0)
5137 rsp->hdr.Status = STATUS_FILE_CLOSED;
5138 smb2_set_err_rsp(work);
5139 } else {
5140 inc_rfc1001_len(rsp_org, 60);
5141 }
5142
5143 return 0;
5144}
5145
5146/**
5147 * smb2_echo() - handler for smb2 echo(ping) command
5148 * @work: smb work containing echo request buffer
5149 *
5150 * Return: 0
5151 */
5152int smb2_echo(struct ksmbd_work *work)
5153{
e5066499 5154 struct smb2_echo_rsp *rsp = work->response_buf;
e2f34481
NJ		 5155
5156 rsp->StructureSize = cpu_to_le16(4);
5157 rsp->Reserved = 0;
5158 inc_rfc1001_len(rsp, 4);
5159 return 0;
5160}
5161
e2f34481 5162static int smb2_rename(struct ksmbd_work *work, struct ksmbd_file *fp,
070fb21e
NJ		 5163 struct smb2_file_rename_info *file_info,
5164 struct nls_table *local_nls)
e2f34481
NJ		 5165{
5166 struct ksmbd_share_config *share = fp->tcon->share_conf;
5167 char *new_name = NULL, *abs_oldname = NULL, *old_name = NULL;
5168 char *pathname = NULL;
5169 struct path path;
5170 bool file_present = true;
5171 int rc;
5172
5173 ksmbd_debug(SMB, "setting FILE_RENAME_INFO\n");
5174 pathname = kmalloc(PATH_MAX, GFP_KERNEL);
5175 if (!pathname)
5176 return -ENOMEM;
5177
5178 abs_oldname = d_path(&fp->filp->f_path, pathname, PATH_MAX);
5179 if (IS_ERR(abs_oldname)) {
5180 rc = -EINVAL;
5181 goto out;
5182 }
5183 old_name = strrchr(abs_oldname, '/');
64b39f4a 5184 if (old_name && old_name[1] != '\0') {
e2f34481 5185 old_name++;
64b39f4a 5186 } else {
e2f34481 5187 ksmbd_debug(SMB, "can't get last component in path %s\n",
070fb21e 5188 abs_oldname);
e2f34481
NJ		 5189 rc = -ENOENT;
5190 goto out;
5191 }
5192
5193 new_name = smb2_get_name(share,
5194 file_info->FileName,
5195 le32_to_cpu(file_info->FileNameLength),
5196 local_nls);
5197 if (IS_ERR(new_name)) {
5198 rc = PTR_ERR(new_name);
5199 goto out;
5200 }
5201
5202 if (strchr(new_name, ':')) {
5203 int s_type;
5204 char *xattr_stream_name, *stream_name = NULL;
5205 size_t xattr_stream_size;
5206 int len;
5207
5208 rc = parse_stream_name(new_name, &stream_name, &s_type);
5209 if (rc < 0)
5210 goto out;
5211
5212 len = strlen(new_name);
5213 if (new_name[len - 1] != '/') {
bde1694a 5214 pr_err("not allow base filename in rename\n");
e2f34481
NJ		 5215 rc = -ESHARE;
5216 goto out;
5217 }
5218
5219 rc = ksmbd_vfs_xattr_stream_name(stream_name,
5220 &xattr_stream_name,
5221 &xattr_stream_size,
5222 s_type);
5223 if (rc)
5224 goto out;
5225
5226 rc = ksmbd_vfs_setxattr(fp->filp->f_path.dentry,
5227 xattr_stream_name,
5228 NULL, 0, 0);
5229 if (rc < 0) {
bde1694a
NJ		 5230 pr_err("failed to store stream name in xattr: %d\n",
5231 rc);
e2f34481
NJ		 5232 rc = -EINVAL;
5233 goto out;
5234 }
5235
5236 goto out;
5237 }
5238
5239 ksmbd_debug(SMB, "new name %s\n", new_name);
5240 rc = ksmbd_vfs_kern_path(new_name, 0, &path, 1);
5241 if (rc)
5242 file_present = false;
5243 else
5244 path_put(&path);
5245
5246 if (ksmbd_share_veto_filename(share, new_name)) {
5247 rc = -ENOENT;
5248 ksmbd_debug(SMB, "Can't rename vetoed file: %s\n", new_name);
5249 goto out;
5250 }
5251
5252 if (file_info->ReplaceIfExists) {
5253 if (file_present) {
5254 rc = ksmbd_vfs_remove_file(work, new_name);
5255 if (rc) {
5256 if (rc != -ENOTEMPTY)
5257 rc = -EINVAL;
5258 ksmbd_debug(SMB, "cannot delete %s, rc %d\n",
070fb21e 5259 new_name, rc);
e2f34481
NJ		 5260 goto out;
5261 }
5262 }
5263 } else {
5264 if (file_present &&
64b39f4a 5265 strncmp(old_name, path.dentry->d_name.name, strlen(old_name))) {
e2f34481
NJ		 5266 rc = -EEXIST;
5267 ksmbd_debug(SMB,
070fb21e 5268 "cannot rename already existing file\n");
e2f34481
NJ		 5269 goto out;
5270 }
5271 }
5272
5273 rc = ksmbd_vfs_fp_rename(work, fp, new_name);
5274out:
5275 kfree(pathname);
5276 if (!IS_ERR(new_name))
915f570a 5277 kfree(new_name);
e2f34481
NJ		 5278 return rc;
5279}
5280
e2f34481 5281static int smb2_create_link(struct ksmbd_work *work,
070fb21e
NJ		 5282 struct ksmbd_share_config *share,
5283 struct smb2_file_link_info *file_info,
5284 struct file *filp,
5285 struct nls_table *local_nls)
e2f34481
NJ		 5286{
5287 char *link_name = NULL, *target_name = NULL, *pathname = NULL;
5288 struct path path;
5289 bool file_present = true;
5290 int rc;
5291
5292 ksmbd_debug(SMB, "setting FILE_LINK_INFORMATION\n");
5293 pathname = kmalloc(PATH_MAX, GFP_KERNEL);
5294 if (!pathname)
5295 return -ENOMEM;
5296
5297 link_name = smb2_get_name(share,
5298 file_info->FileName,
5299 le32_to_cpu(file_info->FileNameLength),
5300 local_nls);
5301 if (IS_ERR(link_name) || S_ISDIR(file_inode(filp)->i_mode)) {
5302 rc = -EINVAL;
5303 goto out;
5304 }
5305
5306 ksmbd_debug(SMB, "link name is %s\n", link_name);
5307 target_name = d_path(&filp->f_path, pathname, PATH_MAX);
5308 if (IS_ERR(target_name)) {
5309 rc = -EINVAL;
5310 goto out;
5311 }
5312
5313 ksmbd_debug(SMB, "target name is %s\n", target_name);
5314 rc = ksmbd_vfs_kern_path(link_name, 0, &path, 0);
5315 if (rc)
5316 file_present = false;
5317 else
5318 path_put(&path);
5319
5320 if (file_info->ReplaceIfExists) {
5321 if (file_present) {
5322 rc = ksmbd_vfs_remove_file(work, link_name);
5323 if (rc) {
5324 rc = -EINVAL;
5325 ksmbd_debug(SMB, "cannot delete %s\n",
070fb21e 5326 link_name);
e2f34481
NJ		 5327 goto out;
5328 }
5329 }
5330 } else {
5331 if (file_present) {
5332 rc = -EEXIST;
5333 ksmbd_debug(SMB, "link already exists\n");
5334 goto out;
5335 }
5336 }
5337
5338 rc = ksmbd_vfs_link(work, target_name, link_name);
5339 if (rc)
5340 rc = -EINVAL;
5341out:
5342 if (!IS_ERR(link_name))
915f570a 5343 kfree(link_name);
e2f34481
NJ		 5344 kfree(pathname);
5345 return rc;
5346}
5347
64b39f4a 5348static int set_file_basic_info(struct ksmbd_file *fp, char *buf,
070fb21e 5349 struct ksmbd_share_config *share)
e2f34481
NJ		 5350{
5351 struct smb2_file_all_info *file_info;
5352 struct iattr attrs;
5353 struct iattr temp_attrs;
5354 struct file *filp;
5355 struct inode *inode;
5356 int rc;
5357
7adfd4f6 5358 if (!(fp->daccess & FILE_WRITE_ATTRIBUTES_LE))
e2f34481
NJ		 5359 return -EACCES;
5360
5361 file_info = (struct smb2_file_all_info *)buf;
5362 attrs.ia_valid = 0;
5363 filp = fp->filp;
5364 inode = file_inode(filp);
5365
5366 if (file_info->CreationTime)
5367 fp->create_time = le64_to_cpu(file_info->CreationTime);
5368
5369 if (file_info->LastAccessTime) {
5370 attrs.ia_atime = ksmbd_NTtimeToUnix(file_info->LastAccessTime);
5371 attrs.ia_valid |= (ATTR_ATIME | ATTR_ATIME_SET);
5372 }
5373
5374 if (file_info->ChangeTime) {
5375 temp_attrs.ia_ctime = ksmbd_NTtimeToUnix(file_info->ChangeTime);
5376 attrs.ia_ctime = temp_attrs.ia_ctime;
5377 attrs.ia_valid |= ATTR_CTIME;
64b39f4a 5378 } else {
e2f34481 5379 temp_attrs.ia_ctime = inode->i_ctime;
64b39f4a 5380 }
e2f34481
NJ		 5381
5382 if (file_info->LastWriteTime) {
5383 attrs.ia_mtime = ksmbd_NTtimeToUnix(file_info->LastWriteTime);
5384 attrs.ia_valid |= (ATTR_MTIME | ATTR_MTIME_SET);
5385 }
5386
5387 if (file_info->Attributes) {
5388 if (!S_ISDIR(inode->i_mode) &&
64b39f4a 5389 file_info->Attributes & ATTR_DIRECTORY_LE) {
bde1694a 5390 pr_err("can't change a file to a directory\n");
e2f34481
NJ		 5391 return -EINVAL;
5392 }
5393
5394 if (!(S_ISDIR(inode->i_mode) && file_info->Attributes == ATTR_NORMAL_LE))
5395 fp->f_ci->m_fattr = file_info->Attributes |
5396 (fp->f_ci->m_fattr & ATTR_DIRECTORY_LE);
5397 }
5398
5399 if (test_share_config_flag(share, KSMBD_SHARE_FLAG_STORE_DOS_ATTRS) &&
5400 (file_info->CreationTime || file_info->Attributes)) {
5401 struct xattr_dos_attrib da = {0};
5402
5403 da.version = 4;
5404 da.itime = fp->itime;
5405 da.create_time = fp->create_time;
5406 da.attr = le32_to_cpu(fp->f_ci->m_fattr);
5407 da.flags = XATTR_DOSINFO_ATTRIB | XATTR_DOSINFO_CREATE_TIME |
5408 XATTR_DOSINFO_ITIME;
5409
5410 rc = ksmbd_vfs_set_dos_attrib_xattr(filp->f_path.dentry, &da);
5411 if (rc)
5412 ksmbd_debug(SMB,
070fb21e 5413 "failed to restore file attribute in EA\n");
e2f34481
NJ		 5414 rc = 0;
5415 }
5416
5417 /*
5418 * HACK : set ctime here to avoid ctime changed
5419 * when file_info->ChangeTime is zero.
5420 */
5421 attrs.ia_ctime = temp_attrs.ia_ctime;
5422 attrs.ia_valid |= ATTR_CTIME;
5423
5424 if (attrs.ia_valid) {
5425 struct dentry *dentry = filp->f_path.dentry;
5426 struct inode *inode = d_inode(dentry);
5427
5428 if (IS_IMMUTABLE(inode) || IS_APPEND(inode))
5429 return -EACCES;
5430
5431 rc = setattr_prepare(&init_user_ns, dentry, &attrs);
5432 if (rc)
5433 return -EINVAL;
5434
5435 inode_lock(inode);
5436 setattr_copy(&init_user_ns, inode, &attrs);
5437 attrs.ia_valid &= ~ATTR_CTIME;
5438 rc = notify_change(&init_user_ns, dentry, &attrs, NULL);
5439 inode_unlock(inode);
5440 }
5441 return 0;
5442}
5443
5444static int set_file_allocation_info(struct ksmbd_work *work,
070fb21e 5445 struct ksmbd_file *fp, char *buf)
e2f34481
NJ		 5446{
5447 /*
5448 * TODO : It's working fine only when store dos attributes
5449 * is not yes. need to implement a logic which works
5450 * properly with any smb.conf option
5451 */
5452
5453 struct smb2_file_alloc_info *file_alloc_info;
5454 loff_t alloc_blks;
5455 struct inode *inode;
5456 int rc;
5457
a299669b 5458 if (!(fp->daccess & FILE_WRITE_DATA_LE))
e2f34481
NJ		 5459 return -EACCES;
5460
5461 file_alloc_info = (struct smb2_file_alloc_info *)buf;
5462 alloc_blks = (le64_to_cpu(file_alloc_info->AllocationSize) + 511) >> 9;
5463 inode = file_inode(fp->filp);
5464
5465 if (alloc_blks > inode->i_blocks) {
e8c06191
NJ		 5466 smb_break_all_levII_oplock(work, fp, 1);
5467 rc = vfs_fallocate(fp->filp, FALLOC_FL_KEEP_SIZE, 0,
5468 alloc_blks * 512);
e2f34481 5469 if (rc && rc != -EOPNOTSUPP) {
e8c06191 5470 pr_err("vfs_fallocate is failed : %d\n", rc);
e2f34481
NJ		 5471 return rc;
5472 }
5473 } else if (alloc_blks < inode->i_blocks) {
5474 loff_t size;
5475
5476 /*
5477 * Allocation size could be smaller than original one
5478 * which means allocated blocks in file should be
5479 * deallocated. use truncate to cut out it, but inode
5480 * size is also updated with truncate offset.
5481 * inode size is retained by backup inode size.
5482 */
5483 size = i_size_read(inode);
5484 rc = ksmbd_vfs_truncate(work, NULL, fp, alloc_blks * 512);
5485 if (rc) {
bde1694a
NJ		 5486 pr_err("truncate failed! filename : %s, err %d\n",
5487 fp->filename, rc);
e2f34481
NJ		 5488 return rc;
5489 }
5490 if (size < alloc_blks * 512)
5491 i_size_write(inode, size);
5492 }
5493 return 0;
5494}
5495
64b39f4a 5496static int set_end_of_file_info(struct ksmbd_work *work, struct ksmbd_file *fp,
070fb21e 5497 char *buf)
e2f34481
NJ		 5498{
5499 struct smb2_file_eof_info *file_eof_info;
5500 loff_t newsize;
5501 struct inode *inode;
5502 int rc;
5503
a299669b 5504 if (!(fp->daccess & FILE_WRITE_DATA_LE))
e2f34481
NJ		 5505 return -EACCES;
5506
5507 file_eof_info = (struct smb2_file_eof_info *)buf;
5508 newsize = le64_to_cpu(file_eof_info->EndOfFile);
5509 inode = file_inode(fp->filp);
5510
5511 /*
5512 * If FILE_END_OF_FILE_INFORMATION of set_info_file is called
5513 * on FAT32 shared device, truncate execution time is too long
5514 * and network error could cause from windows client. because
5515 * truncate of some filesystem like FAT32 fill zero data in
5516 * truncated range.
5517 */
5518 if (inode->i_sb->s_magic != MSDOS_SUPER_MAGIC) {
5519 ksmbd_debug(SMB, "filename : %s truncated to newsize %lld\n",
070fb21e 5520 fp->filename, newsize);
e2f34481
NJ		 5521 rc = ksmbd_vfs_truncate(work, NULL, fp, newsize);
5522 if (rc) {
64b39f4a 5523 ksmbd_debug(SMB, "truncate failed! filename : %s err %d\n",
070fb21e 5524 fp->filename, rc);
e2f34481
NJ		 5525 if (rc != -EAGAIN)
5526 rc = -EBADF;
5527 return rc;
5528 }
5529 }
5530 return 0;
5531}
5532
64b39f4a 5533static int set_rename_info(struct ksmbd_work *work, struct ksmbd_file *fp,
070fb21e 5534 char *buf)
e2f34481
NJ		 5535{
5536 struct ksmbd_file *parent_fp;
5537
5538 if (!(fp->daccess & FILE_DELETE_LE)) {
bde1694a 5539 pr_err("no right to delete : 0x%x\n", fp->daccess);
e2f34481
NJ		 5540 return -EACCES;
5541 }
5542
5543 if (ksmbd_stream_fd(fp))
5544 goto next;
5545
5546 parent_fp = ksmbd_lookup_fd_inode(PARENT_INODE(fp));
5547 if (parent_fp) {
5548 if (parent_fp->daccess & FILE_DELETE_LE) {
bde1694a 5549 pr_err("parent dir is opened with delete access\n");
e2f34481
NJ		 5550 return -ESHARE;
5551 }
5552 }
5553next:
5554 return smb2_rename(work, fp,
5555 (struct smb2_file_rename_info *)buf,
5556 work->sess->conn->local_nls);
5557}
5558
64b39f4a 5559static int set_file_disposition_info(struct ksmbd_file *fp, char *buf)
e2f34481
NJ		 5560{
5561 struct smb2_file_disposition_info *file_info;
5562 struct inode *inode;
5563
5564 if (!(fp->daccess & FILE_DELETE_LE)) {
bde1694a 5565 pr_err("no right to delete : 0x%x\n", fp->daccess);
e2f34481
NJ		 5566 return -EACCES;
5567 }
5568
5569 inode = file_inode(fp->filp);
5570 file_info = (struct smb2_file_disposition_info *)buf;
5571 if (file_info->DeletePending) {
5572 if (S_ISDIR(inode->i_mode) &&
64b39f4a 5573 ksmbd_vfs_empty_dir(fp) == -ENOTEMPTY)
e2f34481
NJ		 5574 return -EBUSY;
5575 ksmbd_set_inode_pending_delete(fp);
5576 } else {
5577 ksmbd_clear_inode_pending_delete(fp);
5578 }
5579 return 0;
5580}
5581
64b39f4a 5582static int set_file_position_info(struct ksmbd_file *fp, char *buf)
e2f34481
NJ		 5583{
5584 struct smb2_file_pos_info *file_info;
5585 loff_t current_byte_offset;
ee81cae1 5586 unsigned long sector_size;
e2f34481
NJ		 5587 struct inode *inode;
5588
5589 inode = file_inode(fp->filp);
5590 file_info = (struct smb2_file_pos_info *)buf;
5591 current_byte_offset = le64_to_cpu(file_info->CurrentByteOffset);
ee81cae1 5592 sector_size = inode->i_sb->s_blocksize;
e2f34481
NJ		 5593
5594 if (current_byte_offset < 0 ||
64b39f4a
NJ		 5595 (fp->coption == FILE_NO_INTERMEDIATE_BUFFERING_LE &&
5596 current_byte_offset & (sector_size - 1))) {
bde1694a
NJ		 5597 pr_err("CurrentByteOffset is not valid : %llu\n",
5598 current_byte_offset);
e2f34481
NJ		 5599 return -EINVAL;
5600 }
5601
5602 fp->filp->f_pos = current_byte_offset;
5603 return 0;
5604}
5605
64b39f4a 5606static int set_file_mode_info(struct ksmbd_file *fp, char *buf)
e2f34481
NJ		 5607{
5608 struct smb2_file_mode_info *file_info;
5609 __le32 mode;
5610
5611 file_info = (struct smb2_file_mode_info *)buf;
5612 mode = file_info->Mode;
5613
64b39f4a
NJ		 5614 if ((mode & ~FILE_MODE_INFO_MASK) ||
5615 (mode & FILE_SYNCHRONOUS_IO_ALERT_LE &&
5616 mode & FILE_SYNCHRONOUS_IO_NONALERT_LE)) {
bde1694a 5617 pr_err("Mode is not valid : 0x%x\n", le32_to_cpu(mode));
e2f34481
NJ		 5618 return -EINVAL;
5619 }
5620
5621 /*
5622 * TODO : need to implement consideration for
5623 * FILE_SYNCHRONOUS_IO_ALERT and FILE_SYNCHRONOUS_IO_NONALERT
5624 */
5625 ksmbd_vfs_set_fadvise(fp->filp, mode);
5626 fp->coption = mode;
5627 return 0;
5628}
5629
5630/**
5631 * smb2_set_info_file() - handler for smb2 set info command
5632 * @work: smb work containing set info command buffer
95fa1ce9
HL		 5633 * @fp: ksmbd_file pointer
5634 * @info_class: smb2 set info class
5635 * @share: ksmbd_share_config pointer
e2f34481
NJ		 5636 *
5637 * Return: 0 on success, otherwise error
5638 * TODO: need to implement an error handling for STATUS_INFO_LENGTH_MISMATCH
5639 */
64b39f4a 5640static int smb2_set_info_file(struct ksmbd_work *work, struct ksmbd_file *fp,
070fb21e
NJ		 5641 int info_class, char *buf,
5642 struct ksmbd_share_config *share)
e2f34481
NJ		 5643{
5644 switch (info_class) {
5645 case FILE_BASIC_INFORMATION:
5646 return set_file_basic_info(fp, buf, share);
5647
5648 case FILE_ALLOCATION_INFORMATION:
5649 return set_file_allocation_info(work, fp, buf);
5650
5651 case FILE_END_OF_FILE_INFORMATION:
5652 return set_end_of_file_info(work, fp, buf);
5653
5654 case FILE_RENAME_INFORMATION:
64b39f4a 5655 if (!test_tree_conn_flag(work->tcon, KSMBD_TREE_CONN_FLAG_WRITABLE)) {
e2f34481 5656 ksmbd_debug(SMB,
070fb21e 5657 "User does not have write permission\n");
e2f34481
NJ		 5658 return -EACCES;
5659 }
5660 return set_rename_info(work, fp, buf);
5661
5662 case FILE_LINK_INFORMATION:
5663 return smb2_create_link(work, work->tcon->share_conf,
070fb21e
NJ		 5664 (struct smb2_file_link_info *)buf, fp->filp,
5665 work->sess->conn->local_nls);
e2f34481
NJ		 5666
5667 case FILE_DISPOSITION_INFORMATION:
64b39f4a 5668 if (!test_tree_conn_flag(work->tcon, KSMBD_TREE_CONN_FLAG_WRITABLE)) {
e2f34481 5669 ksmbd_debug(SMB,
070fb21e 5670 "User does not have write permission\n");
e2f34481
NJ		 5671 return -EACCES;
5672 }
5673 return set_file_disposition_info(fp, buf);
5674
5675 case FILE_FULL_EA_INFORMATION:
5676 {
5677 if (!(fp->daccess & FILE_WRITE_EA_LE)) {
bde1694a
NJ		 5678 pr_err("Not permitted to write ext attr: 0x%x\n",
5679 fp->daccess);
e2f34481
NJ		 5680 return -EACCES;
5681 }
5682
5683 return smb2_set_ea((struct smb2_ea_info *)buf,
5684 &fp->filp->f_path);
5685 }
5686
5687 case FILE_POSITION_INFORMATION:
5688 return set_file_position_info(fp, buf);
5689
5690 case FILE_MODE_INFORMATION:
5691 return set_file_mode_info(fp, buf);
5692 }
5693
bde1694a 5694 pr_err("Unimplemented Fileinfoclass :%d\n", info_class);
e2f34481
NJ		 5695 return -EOPNOTSUPP;
5696}
5697
64b39f4a 5698static int smb2_set_info_sec(struct ksmbd_file *fp, int addition_info,
070fb21e 5699 char *buffer, int buf_len)
e2f34481
NJ		 5700{
5701 struct smb_ntsd *pntsd = (struct smb_ntsd *)buffer;
5702
5703 fp->saccess |= FILE_SHARE_DELETE_LE;
5704
5705 return set_info_sec(fp->conn, fp->tcon, fp->filp->f_path.dentry, pntsd,
5706 buf_len, false);
5707}
5708
5709/**
5710 * smb2_set_info() - handler for smb2 set info command handler
5711 * @work: smb work containing set info request buffer
5712 *
5713 * Return: 0 on success, otherwise error
5714 */
5715int smb2_set_info(struct ksmbd_work *work)
5716{
5717 struct smb2_set_info_req *req;
5718 struct smb2_set_info_rsp *rsp, *rsp_org;
5719 struct ksmbd_file *fp;
5720 int rc = 0;
5721 unsigned int id = KSMBD_NO_FID, pid = KSMBD_NO_FID;
5722
5723 ksmbd_debug(SMB, "Received set info request\n");
5724
e5066499 5725 rsp_org = work->response_buf;
e2f34481
NJ		 5726 if (work->next_smb2_rcv_hdr_off) {
5727 req = REQUEST_BUF_NEXT(work);
5728 rsp = RESPONSE_BUF_NEXT(work);
5729 if (!HAS_FILE_ID(le64_to_cpu(req->VolatileFileId))) {
5730 ksmbd_debug(SMB, "Compound request set FID = %u\n",
070fb21e 5731 work->compound_fid);
e2f34481
NJ		 5732 id = work->compound_fid;
5733 pid = work->compound_pfid;
5734 }
5735 } else {
e5066499
NJ		 5736 req = work->request_buf;
5737 rsp = work->response_buf;
e2f34481
NJ		 5738 }
5739
5740 if (!HAS_FILE_ID(id)) {
5741 id = le64_to_cpu(req->VolatileFileId);
5742 pid = le64_to_cpu(req->PersistentFileId);
5743 }
5744
5745 fp = ksmbd_lookup_fd_slow(work, id, pid);
5746 if (!fp) {
5747 ksmbd_debug(SMB, "Invalid id for close: %u\n", id);
5748 rc = -ENOENT;
5749 goto err_out;
5750 }
5751
5752 switch (req->InfoType) {
5753 case SMB2_O_INFO_FILE:
5754 ksmbd_debug(SMB, "GOT SMB2_O_INFO_FILE\n");
5755 rc = smb2_set_info_file(work, fp, req->FileInfoClass,
5756 req->Buffer, work->tcon->share_conf);
5757 break;
5758 case SMB2_O_INFO_SECURITY:
5759 ksmbd_debug(SMB, "GOT SMB2_O_INFO_SECURITY\n");
5760 rc = smb2_set_info_sec(fp,
070fb21e
NJ		 5761 le32_to_cpu(req->AdditionalInformation),
5762 req->Buffer,
5763 le32_to_cpu(req->BufferLength));
e2f34481
NJ		 5764 break;
5765 default:
5766 rc = -EOPNOTSUPP;
5767 }
5768
5769 if (rc < 0)
5770 goto err_out;
5771
5772 rsp->StructureSize = cpu_to_le16(2);
5773 inc_rfc1001_len(rsp_org, 2);
5774 ksmbd_fd_put(work, fp);
5775 return 0;
5776
5777err_out:
5778 if (rc == -EACCES || rc == -EPERM)
5779 rsp->hdr.Status = STATUS_ACCESS_DENIED;
5780 else if (rc == -EINVAL)
5781 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
5782 else if (rc == -ESHARE)
5783 rsp->hdr.Status = STATUS_SHARING_VIOLATION;
5784 else if (rc == -ENOENT)
5785 rsp->hdr.Status = STATUS_OBJECT_NAME_INVALID;
5786 else if (rc == -EBUSY || rc == -ENOTEMPTY)
5787 rsp->hdr.Status = STATUS_DIRECTORY_NOT_EMPTY;
5788 else if (rc == -EAGAIN)
5789 rsp->hdr.Status = STATUS_FILE_LOCK_CONFLICT;
ff1d5727 5790 else if (rc == -EBADF || rc == -ESTALE)
e2f34481
NJ		 5791 rsp->hdr.Status = STATUS_INVALID_HANDLE;
5792 else if (rc == -EEXIST)
5793 rsp->hdr.Status = STATUS_OBJECT_NAME_COLLISION;
5794 else if (rsp->hdr.Status == 0 || rc == -EOPNOTSUPP)
5795 rsp->hdr.Status = STATUS_INVALID_INFO_CLASS;
5796 smb2_set_err_rsp(work);
5797 ksmbd_fd_put(work, fp);
070fb21e 5798 ksmbd_debug(SMB, "error while processing smb2 query rc = %d\n", rc);
e2f34481
NJ		 5799 return rc;
5800}
5801
5802/**
5803 * smb2_read_pipe() - handler for smb2 read from IPC pipe
5804 * @work: smb work containing read IPC pipe command buffer
5805 *
5806 * Return: 0 on success, otherwise error
5807 */
5808static noinline int smb2_read_pipe(struct ksmbd_work *work)
5809{
5810 int nbytes = 0, err;
64b39f4a 5811 u64 id;
e2f34481 5812 struct ksmbd_rpc_command *rpc_resp;
e5066499
NJ		 5813 struct smb2_read_req *req = work->request_buf;
5814 struct smb2_read_rsp *rsp = work->response_buf;
e2f34481
NJ		 5815
5816 id = le64_to_cpu(req->VolatileFileId);
5817
5818 inc_rfc1001_len(rsp, 16);
5819 rpc_resp = ksmbd_rpc_read(work->sess, id);
5820 if (rpc_resp) {
5821 if (rpc_resp->flags != KSMBD_RPC_OK) {
5822 err = -EINVAL;
5823 goto out;
5824 }
5825
5826 work->aux_payload_buf =
79f6b11a 5827 kvmalloc(rpc_resp->payload_sz, GFP_KERNEL | __GFP_ZERO);
e2f34481
NJ		 5828 if (!work->aux_payload_buf) {
5829 err = -ENOMEM;
5830 goto out;
5831 }
5832
5833 memcpy(work->aux_payload_buf, rpc_resp->payload,
070fb21e 5834 rpc_resp->payload_sz);
e2f34481
NJ		 5835
5836 nbytes = rpc_resp->payload_sz;
5837 work->resp_hdr_sz = get_rfc1002_len(rsp) + 4;
5838 work->aux_payload_sz = nbytes;
79f6b11a 5839 kvfree(rpc_resp);
e2f34481
NJ		 5840 }
5841
5842 rsp->StructureSize = cpu_to_le16(17);
5843 rsp->DataOffset = 80;
5844 rsp->Reserved = 0;
5845 rsp->DataLength = cpu_to_le32(nbytes);
5846 rsp->DataRemaining = 0;
5847 rsp->Reserved2 = 0;
5848 inc_rfc1001_len(rsp, nbytes);
5849 return 0;
5850
5851out:
5852 rsp->hdr.Status = STATUS_UNEXPECTED_IO_ERROR;
5853 smb2_set_err_rsp(work);
79f6b11a 5854 kvfree(rpc_resp);
e2f34481
NJ		 5855 return err;
5856}
5857
5858static ssize_t smb2_read_rdma_channel(struct ksmbd_work *work,
070fb21e
NJ		 5859 struct smb2_read_req *req, void *data_buf,
5860 size_t length)
e2f34481
NJ		 5861{
5862 struct smb2_buffer_desc_v1 *desc =
5863 (struct smb2_buffer_desc_v1 *)&req->Buffer[0];
5864 int err;
5865
64b39f4a
NJ		 5866 if (work->conn->dialect == SMB30_PROT_ID &&
5867 req->Channel != SMB2_CHANNEL_RDMA_V1)
e2f34481
NJ		 5868 return -EINVAL;
5869
64b39f4a
NJ		 5870 if (req->ReadChannelInfoOffset == 0 ||
5871 le16_to_cpu(req->ReadChannelInfoLength) < sizeof(*desc))
e2f34481
NJ		 5872 return -EINVAL;
5873
5874 work->need_invalidate_rkey =
5875 (req->Channel == SMB2_CHANNEL_RDMA_V1_INVALIDATE);
5876 work->remote_key = le32_to_cpu(desc->token);
5877
64b39f4a 5878 err = ksmbd_conn_rdma_write(work->conn, data_buf, length,
070fb21e
NJ		 5879 le32_to_cpu(desc->token),
5880 le64_to_cpu(desc->offset),
5881 le32_to_cpu(desc->length));
e2f34481
NJ		 5882 if (err)
5883 return err;
5884
5885 return length;
5886}
5887
5888/**
5889 * smb2_read() - handler for smb2 read from file
5890 * @work: smb work containing read command buffer
5891 *
5892 * Return: 0 on success, otherwise error
5893 */
5894int smb2_read(struct ksmbd_work *work)
5895{
5896 struct ksmbd_conn *conn = work->conn;
5897 struct smb2_read_req *req;
5898 struct smb2_read_rsp *rsp, *rsp_org;
5899 struct ksmbd_file *fp;
5900 loff_t offset;
5901 size_t length, mincount;
5902 ssize_t nbytes = 0, remain_bytes = 0;
5903 int err = 0;
5904
e5066499 5905 rsp_org = work->response_buf;
e2f34481
NJ		 5906 WORK_BUFFERS(work, req, rsp);
5907
5908 if (test_share_config_flag(work->tcon->share_conf,
5909 KSMBD_SHARE_FLAG_PIPE)) {
5910 ksmbd_debug(SMB, "IPC pipe read request\n");
5911 return smb2_read_pipe(work);
5912 }
5913
070fb21e
NJ		 5914 fp = ksmbd_lookup_fd_slow(work, le64_to_cpu(req->VolatileFileId),
5915 le64_to_cpu(req->PersistentFileId));
e2f34481 5916 if (!fp) {
a4382db9
MM		 5917 err = -ENOENT;
5918 goto out;
e2f34481
NJ		 5919 }
5920
5921 if (!(fp->daccess & (FILE_READ_DATA_LE | FILE_READ_ATTRIBUTES_LE))) {
bde1694a 5922 pr_err("Not permitted to read : 0x%x\n", fp->daccess);
e2f34481
NJ		 5923 err = -EACCES;
5924 goto out;
5925 }
5926
5927 offset = le64_to_cpu(req->Offset);
5928 length = le32_to_cpu(req->Length);
5929 mincount = le32_to_cpu(req->MinimumCount);
5930
5931 if (length > conn->vals->max_read_size) {
5932 ksmbd_debug(SMB, "limiting read size to max size(%u)\n",
5933 conn->vals->max_read_size);
5934 err = -EINVAL;
5935 goto out;
5936 }
5937
5938 ksmbd_debug(SMB, "filename %s, offset %lld, len %zu\n", FP_FILENAME(fp),
070fb21e 5939 offset, length);
e2f34481 5940
c30f4eb8 5941 work->aux_payload_buf = kvmalloc(length, GFP_KERNEL | __GFP_ZERO);
e2f34481 5942 if (!work->aux_payload_buf) {
c1ea111f 5943 err = -ENOMEM;
e2f34481
NJ		 5944 goto out;
5945 }
5946
5947 nbytes = ksmbd_vfs_read(work, fp, length, &offset);
5948 if (nbytes < 0) {
5949 err = nbytes;
5950 goto out;
5951 }
5952
5953 if ((nbytes == 0 && length != 0) || nbytes < mincount) {
c30f4eb8 5954 kvfree(work->aux_payload_buf);
e5066499 5955 work->aux_payload_buf = NULL;
e2f34481
NJ		 5956 rsp->hdr.Status = STATUS_END_OF_FILE;
5957 smb2_set_err_rsp(work);
5958 ksmbd_fd_put(work, fp);
5959 return 0;
5960 }
5961
5962 ksmbd_debug(SMB, "nbytes %zu, offset %lld mincount %zu\n",
070fb21e 5963 nbytes, offset, mincount);
e2f34481
NJ		 5964
5965 if (req->Channel == SMB2_CHANNEL_RDMA_V1_INVALIDATE ||
64b39f4a 5966 req->Channel == SMB2_CHANNEL_RDMA_V1) {
e2f34481
NJ		 5967 /* write data to the client using rdma channel */
5968 remain_bytes = smb2_read_rdma_channel(work, req,
070fb21e
NJ		 5969 work->aux_payload_buf,
5970 nbytes);
c30f4eb8 5971 kvfree(work->aux_payload_buf);
e5066499 5972 work->aux_payload_buf = NULL;
e2f34481
NJ		 5973
5974 nbytes = 0;
5975 if (remain_bytes < 0) {
5976 err = (int)remain_bytes;
5977 goto out;
5978 }
5979 }
5980
5981 rsp->StructureSize = cpu_to_le16(17);
5982 rsp->DataOffset = 80;
5983 rsp->Reserved = 0;
5984 rsp->DataLength = cpu_to_le32(nbytes);
5985 rsp->DataRemaining = cpu_to_le32(remain_bytes);
5986 rsp->Reserved2 = 0;
5987 inc_rfc1001_len(rsp_org, 16);
5988 work->resp_hdr_sz = get_rfc1002_len(rsp_org) + 4;
5989 work->aux_payload_sz = nbytes;
5990 inc_rfc1001_len(rsp_org, nbytes);
5991 ksmbd_fd_put(work, fp);
5992 return 0;
5993
5994out:
5995 if (err) {
5996 if (err == -EISDIR)
5997 rsp->hdr.Status = STATUS_INVALID_DEVICE_REQUEST;
5998 else if (err == -EAGAIN)
5999 rsp->hdr.Status = STATUS_FILE_LOCK_CONFLICT;
6000 else if (err == -ENOENT)
6001 rsp->hdr.Status = STATUS_FILE_CLOSED;
6002 else if (err == -EACCES)
6003 rsp->hdr.Status = STATUS_ACCESS_DENIED;
6004 else if (err == -ESHARE)
6005 rsp->hdr.Status = STATUS_SHARING_VIOLATION;
6006 else if (err == -EINVAL)
6007 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
6008 else
6009 rsp->hdr.Status = STATUS_INVALID_HANDLE;
6010
6011 smb2_set_err_rsp(work);
6012 }
6013 ksmbd_fd_put(work, fp);
6014 return err;
6015}
6016
6017/**
6018 * smb2_write_pipe() - handler for smb2 write on IPC pipe
6019 * @work: smb work containing write IPC pipe command buffer
6020 *
6021 * Return: 0 on success, otherwise error
6022 */
6023static noinline int smb2_write_pipe(struct ksmbd_work *work)
6024{
e5066499
NJ		 6025 struct smb2_write_req *req = work->request_buf;
6026 struct smb2_write_rsp *rsp = work->response_buf;
e2f34481 6027 struct ksmbd_rpc_command *rpc_resp;
64b39f4a 6028 u64 id = 0;
e2f34481
NJ		 6029 int err = 0, ret = 0;
6030 char *data_buf;
6031 size_t length;
6032
6033 length = le32_to_cpu(req->Length);
6034 id = le64_to_cpu(req->VolatileFileId);
6035
6036 if (le16_to_cpu(req->DataOffset) ==
64b39f4a 6037 (offsetof(struct smb2_write_req, Buffer) - 4)) {
e2f34481
NJ		 6038 data_buf = (char *)&req->Buffer[0];
6039 } else {
6040 if ((le16_to_cpu(req->DataOffset) > get_rfc1002_len(req)) ||
64b39f4a 6041 (le16_to_cpu(req->DataOffset) + length > get_rfc1002_len(req))) {
bde1694a
NJ		 6042 pr_err("invalid write data offset %u, smb_len %u\n",
6043 le16_to_cpu(req->DataOffset),
6044 get_rfc1002_len(req));
e2f34481
NJ		 6045 err = -EINVAL;
6046 goto out;
6047 }
6048
6049 data_buf = (char *)(((char *)&req->hdr.ProtocolId) +
6050 le16_to_cpu(req->DataOffset));
6051 }
6052
6053 rpc_resp = ksmbd_rpc_write(work->sess, id, data_buf, length);
6054 if (rpc_resp) {
6055 if (rpc_resp->flags == KSMBD_RPC_ENOTIMPLEMENTED) {
6056 rsp->hdr.Status = STATUS_NOT_SUPPORTED;
79f6b11a 6057 kvfree(rpc_resp);
e2f34481
NJ		 6058 smb2_set_err_rsp(work);
6059 return -EOPNOTSUPP;
6060 }
6061 if (rpc_resp->flags != KSMBD_RPC_OK) {
6062 rsp->hdr.Status = STATUS_INVALID_HANDLE;
6063 smb2_set_err_rsp(work);
79f6b11a 6064 kvfree(rpc_resp);
e2f34481
NJ		 6065 return ret;
6066 }
79f6b11a 6067 kvfree(rpc_resp);
e2f34481
NJ		 6068 }
6069
6070 rsp->StructureSize = cpu_to_le16(17);
6071 rsp->DataOffset = 0;
6072 rsp->Reserved = 0;
6073 rsp->DataLength = cpu_to_le32(length);
6074 rsp->DataRemaining = 0;
6075 rsp->Reserved2 = 0;
6076 inc_rfc1001_len(rsp, 16);
6077 return 0;
6078out:
6079 if (err) {
6080 rsp->hdr.Status = STATUS_INVALID_HANDLE;
6081 smb2_set_err_rsp(work);
6082 }
6083
6084 return err;
6085}
6086
6087static ssize_t smb2_write_rdma_channel(struct ksmbd_work *work,
070fb21e
NJ		 6088 struct smb2_write_req *req,
6089 struct ksmbd_file *fp,
6090 loff_t offset, size_t length, bool sync)
e2f34481
NJ		 6091{
6092 struct smb2_buffer_desc_v1 *desc;
6093 char *data_buf;
6094 int ret;
6095 ssize_t nbytes;
6096
6097 desc = (struct smb2_buffer_desc_v1 *)&req->Buffer[0];
6098
6099 if (work->conn->dialect == SMB30_PROT_ID &&
64b39f4a 6100 req->Channel != SMB2_CHANNEL_RDMA_V1)
e2f34481
NJ		 6101 return -EINVAL;
6102
6103 if (req->Length != 0 || req->DataOffset != 0)
6104 return -EINVAL;
6105
64b39f4a
NJ		 6106 if (req->WriteChannelInfoOffset == 0 ||
6107 le16_to_cpu(req->WriteChannelInfoLength) < sizeof(*desc))
e2f34481
NJ		 6108 return -EINVAL;
6109
6110 work->need_invalidate_rkey =
6111 (req->Channel == SMB2_CHANNEL_RDMA_V1_INVALIDATE);
6112 work->remote_key = le32_to_cpu(desc->token);
6113
79f6b11a 6114 data_buf = kvmalloc(length, GFP_KERNEL | __GFP_ZERO);
e2f34481
NJ		 6115 if (!data_buf)
6116 return -ENOMEM;
6117
6118 ret = ksmbd_conn_rdma_read(work->conn, data_buf, length,
070fb21e
NJ		 6119 le32_to_cpu(desc->token),
6120 le64_to_cpu(desc->offset),
6121 le32_to_cpu(desc->length));
e2f34481 6122 if (ret < 0) {
79f6b11a 6123 kvfree(data_buf);
e2f34481
NJ		 6124 return ret;
6125 }
6126
64b39f4a 6127 ret = ksmbd_vfs_write(work, fp, data_buf, length, &offset, sync, &nbytes);
79f6b11a 6128 kvfree(data_buf);
e2f34481
NJ		 6129 if (ret < 0)
6130 return ret;
6131
6132 return nbytes;
6133}
6134
6135/**
6136 * smb2_write() - handler for smb2 write from file
6137 * @work: smb work containing write command buffer
6138 *
6139 * Return: 0 on success, otherwise error
6140 */
6141int smb2_write(struct ksmbd_work *work)
6142{
6143 struct smb2_write_req *req;
6144 struct smb2_write_rsp *rsp, *rsp_org;
bcd62a36 6145 struct ksmbd_file *fp = NULL;
e2f34481
NJ		 6146 loff_t offset;
6147 size_t length;
6148 ssize_t nbytes;
6149 char *data_buf;
6150 bool writethrough = false;
6151 int err = 0;
6152
e5066499 6153 rsp_org = work->response_buf;
e2f34481
NJ		 6154 WORK_BUFFERS(work, req, rsp);
6155
64b39f4a 6156 if (test_share_config_flag(work->tcon->share_conf, KSMBD_SHARE_FLAG_PIPE)) {
e2f34481
NJ		 6157 ksmbd_debug(SMB, "IPC pipe write request\n");
6158 return smb2_write_pipe(work);
6159 }
6160
6161 if (!test_tree_conn_flag(work->tcon, KSMBD_TREE_CONN_FLAG_WRITABLE)) {
6162 ksmbd_debug(SMB, "User does not have write permission\n");
6163 err = -EACCES;
6164 goto out;
6165 }
6166
64b39f4a 6167 fp = ksmbd_lookup_fd_slow(work, le64_to_cpu(req->VolatileFileId),
070fb21e 6168 le64_to_cpu(req->PersistentFileId));
e2f34481 6169 if (!fp) {
a4382db9
MM		 6170 err = -ENOENT;
6171 goto out;
e2f34481
NJ		 6172 }
6173
6174 if (!(fp->daccess & (FILE_WRITE_DATA_LE | FILE_READ_ATTRIBUTES_LE))) {
bde1694a 6175 pr_err("Not permitted to write : 0x%x\n", fp->daccess);
e2f34481
NJ		 6176 err = -EACCES;
6177 goto out;
6178 }
6179
6180 offset = le64_to_cpu(req->Offset);
6181 length = le32_to_cpu(req->Length);
6182
6183 if (length > work->conn->vals->max_write_size) {
6184 ksmbd_debug(SMB, "limiting write size to max size(%u)\n",
6185 work->conn->vals->max_write_size);
6186 err = -EINVAL;
6187 goto out;
6188 }
6189
6190 if (le32_to_cpu(req->Flags) & SMB2_WRITEFLAG_WRITE_THROUGH)
6191 writethrough = true;
6192
6193 if (req->Channel != SMB2_CHANNEL_RDMA_V1 &&
64b39f4a 6194 req->Channel != SMB2_CHANNEL_RDMA_V1_INVALIDATE) {
e2f34481 6195 if (le16_to_cpu(req->DataOffset) ==
070fb21e 6196 (offsetof(struct smb2_write_req, Buffer) - 4)) {
e2f34481
NJ		 6197 data_buf = (char *)&req->Buffer[0];
6198 } else {
64b39f4a
NJ		 6199 if ((le16_to_cpu(req->DataOffset) > get_rfc1002_len(req)) ||
6200 (le16_to_cpu(req->DataOffset) + length > get_rfc1002_len(req))) {
bde1694a
NJ		 6201 pr_err("invalid write data offset %u, smb_len %u\n",
6202 le16_to_cpu(req->DataOffset),
6203 get_rfc1002_len(req));
e2f34481
NJ		 6204 err = -EINVAL;
6205 goto out;
6206 }
6207
6208 data_buf = (char *)(((char *)&req->hdr.ProtocolId) +
6209 le16_to_cpu(req->DataOffset));
6210 }
6211
6212 ksmbd_debug(SMB, "flags %u\n", le32_to_cpu(req->Flags));
6213 if (le32_to_cpu(req->Flags) & SMB2_WRITEFLAG_WRITE_THROUGH)
6214 writethrough = true;
6215
6216 ksmbd_debug(SMB, "filename %s, offset %lld, len %zu\n",
070fb21e 6217 FP_FILENAME(fp), offset, length);
e2f34481
NJ		 6218 err = ksmbd_vfs_write(work, fp, data_buf, length, &offset,
6219 writethrough, &nbytes);
6220 if (err < 0)
6221 goto out;
6222 } else {
6223 /* read data from the client using rdma channel, and
6224 * write the data.
6225 */
6226 nbytes = smb2_write_rdma_channel(work, req, fp, offset,
070fb21e
NJ		 6227 le32_to_cpu(req->RemainingBytes),
6228 writethrough);
e2f34481
NJ		 6229 if (nbytes < 0) {
6230 err = (int)nbytes;
6231 goto out;
6232 }
6233 }
6234
6235 rsp->StructureSize = cpu_to_le16(17);
6236 rsp->DataOffset = 0;
6237 rsp->Reserved = 0;
6238 rsp->DataLength = cpu_to_le32(nbytes);
6239 rsp->DataRemaining = 0;
6240 rsp->Reserved2 = 0;
6241 inc_rfc1001_len(rsp_org, 16);
6242 ksmbd_fd_put(work, fp);
6243 return 0;
6244
6245out:
6246 if (err == -EAGAIN)
6247 rsp->hdr.Status = STATUS_FILE_LOCK_CONFLICT;
6248 else if (err == -ENOSPC || err == -EFBIG)
6249 rsp->hdr.Status = STATUS_DISK_FULL;
6250 else if (err == -ENOENT)
6251 rsp->hdr.Status = STATUS_FILE_CLOSED;
6252 else if (err == -EACCES)
6253 rsp->hdr.Status = STATUS_ACCESS_DENIED;
6254 else if (err == -ESHARE)
6255 rsp->hdr.Status = STATUS_SHARING_VIOLATION;
6256 else if (err == -EINVAL)
6257 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
6258 else
6259 rsp->hdr.Status = STATUS_INVALID_HANDLE;
6260
6261 smb2_set_err_rsp(work);
6262 ksmbd_fd_put(work, fp);
6263 return err;
6264}
6265
6266/**
6267 * smb2_flush() - handler for smb2 flush file - fsync
6268 * @work: smb work containing flush command buffer
6269 *
6270 * Return: 0 on success, otherwise error
6271 */
6272int smb2_flush(struct ksmbd_work *work)
6273{
6274 struct smb2_flush_req *req;
6275 struct smb2_flush_rsp *rsp, *rsp_org;
6276 int err;
6277
e5066499 6278 rsp_org = work->response_buf;
e2f34481
NJ		 6279 WORK_BUFFERS(work, req, rsp);
6280
6281 ksmbd_debug(SMB, "SMB2_FLUSH called for fid %llu\n",
070fb21e 6282 le64_to_cpu(req->VolatileFileId));
e2f34481
NJ		 6283
6284 err = ksmbd_vfs_fsync(work,
6285 le64_to_cpu(req->VolatileFileId),
6286 le64_to_cpu(req->PersistentFileId));
6287 if (err)
6288 goto out;
6289
6290 rsp->StructureSize = cpu_to_le16(4);
6291 rsp->Reserved = 0;
6292 inc_rfc1001_len(rsp_org, 4);
6293 return 0;
6294
6295out:
6296 if (err) {
6297 rsp->hdr.Status = STATUS_INVALID_HANDLE;
6298 smb2_set_err_rsp(work);
6299 }
6300
6301 return err;
6302}
6303
6304/**
6305 * smb2_cancel() - handler for smb2 cancel command
6306 * @work: smb work containing cancel command buffer
6307 *
6308 * Return: 0 on success, otherwise error
6309 */
6310int smb2_cancel(struct ksmbd_work *work)
6311{
6312 struct ksmbd_conn *conn = work->conn;
e5066499 6313 struct smb2_hdr *hdr = work->request_buf;
e2f34481
NJ		 6314 struct smb2_hdr *chdr;
6315 struct ksmbd_work *cancel_work = NULL;
e2f34481
NJ		 6316 int canceled = 0;
6317 struct list_head *command_list;
6318
6319 ksmbd_debug(SMB, "smb2 cancel called on mid %llu, async flags 0x%x\n",
070fb21e 6320 hdr->MessageId, hdr->Flags);
e2f34481
NJ		 6321
6322 if (hdr->Flags & SMB2_FLAGS_ASYNC_COMMAND) {
6323 command_list = &conn->async_requests;
6324
6325 spin_lock(&conn->request_lock);
6f3d5eee
NJ		 6326 list_for_each_entry(cancel_work, command_list,
6327 async_request_entry) {
e5066499 6328 chdr = cancel_work->request_buf;
e2f34481
NJ		 6329
6330 if (cancel_work->async_id !=
64b39f4a 6331 le64_to_cpu(hdr->Id.AsyncId))
e2f34481
NJ		 6332 continue;
6333
6334 ksmbd_debug(SMB,
070fb21e
NJ		 6335 "smb2 with AsyncId %llu cancelled command = 0x%x\n",
6336 le64_to_cpu(hdr->Id.AsyncId),
6337 le16_to_cpu(chdr->Command));
e2f34481
NJ		 6338 canceled = 1;
6339 break;
6340 }
6341 spin_unlock(&conn->request_lock);
6342 } else {
6343 command_list = &conn->requests;
6344
6345 spin_lock(&conn->request_lock);
6f3d5eee 6346 list_for_each_entry(cancel_work, command_list, request_entry) {
e5066499 6347 chdr = cancel_work->request_buf;
e2f34481
NJ		 6348
6349 if (chdr->MessageId != hdr->MessageId ||
64b39f4a 6350 cancel_work == work)
e2f34481
NJ		 6351 continue;
6352
6353 ksmbd_debug(SMB,
070fb21e
NJ		 6354 "smb2 with mid %llu cancelled command = 0x%x\n",
6355 le64_to_cpu(hdr->MessageId),
6356 le16_to_cpu(chdr->Command));
e2f34481
NJ		 6357 canceled = 1;
6358 break;
6359 }
6360 spin_unlock(&conn->request_lock);
6361 }
6362
6363 if (canceled) {
6364 cancel_work->state = KSMBD_WORK_CANCELLED;
6365 if (cancel_work->cancel_fn)
6366 cancel_work->cancel_fn(cancel_work->cancel_argv);
6367 }
6368
6369 /* For SMB2_CANCEL command itself send no response*/
6370 work->send_no_response = 1;
6371 return 0;
6372}
6373
6374struct file_lock *smb_flock_init(struct file *f)
6375{
6376 struct file_lock *fl;
6377
6378 fl = locks_alloc_lock();
6379 if (!fl)
6380 goto out;
6381
6382 locks_init_lock(fl);
6383
6384 fl->fl_owner = f;
6385 fl->fl_pid = current->tgid;
6386 fl->fl_file = f;
6387 fl->fl_flags = FL_POSIX;
6388 fl->fl_ops = NULL;
6389 fl->fl_lmops = NULL;
6390
6391out:
6392 return fl;
6393}
6394
6395static int smb2_set_flock_flags(struct file_lock *flock, int flags)
6396{
6397 int cmd = -EINVAL;
6398
6399 /* Checking for wrong flag combination during lock request*/
6400 switch (flags) {
6401 case SMB2_LOCKFLAG_SHARED:
6402 ksmbd_debug(SMB, "received shared request\n");
6403 cmd = F_SETLKW;
6404 flock->fl_type = F_RDLCK;
6405 flock->fl_flags |= FL_SLEEP;
6406 break;
6407 case SMB2_LOCKFLAG_EXCLUSIVE:
6408 ksmbd_debug(SMB, "received exclusive request\n");
6409 cmd = F_SETLKW;
6410 flock->fl_type = F_WRLCK;
6411 flock->fl_flags |= FL_SLEEP;
6412 break;
64b39f4a 6413 case SMB2_LOCKFLAG_SHARED | SMB2_LOCKFLAG_FAIL_IMMEDIATELY:
e2f34481 6414 ksmbd_debug(SMB,
070fb21e 6415 "received shared & fail immediately request\n");
e2f34481
NJ		 6416 cmd = F_SETLK;
6417 flock->fl_type = F_RDLCK;
6418 break;
64b39f4a 6419 case SMB2_LOCKFLAG_EXCLUSIVE | SMB2_LOCKFLAG_FAIL_IMMEDIATELY:
e2f34481 6420 ksmbd_debug(SMB,
070fb21e 6421 "received exclusive & fail immediately request\n");
e2f34481
NJ		 6422 cmd = F_SETLK;
6423 flock->fl_type = F_WRLCK;
6424 break;
6425 case SMB2_LOCKFLAG_UNLOCK:
6426 ksmbd_debug(SMB, "received unlock request\n");
6427 flock->fl_type = F_UNLCK;
6428 cmd = 0;
6429 break;
6430 }
6431
6432 return cmd;
6433}
6434
6435static struct ksmbd_lock *smb2_lock_init(struct file_lock *flock,
070fb21e
NJ		 6436 unsigned int cmd, int flags,
6437 struct list_head *lock_list)
e2f34481
NJ		 6438{
6439 struct ksmbd_lock *lock;
6440
6441 lock = kzalloc(sizeof(struct ksmbd_lock), GFP_KERNEL);
6442 if (!lock)
6443 return NULL;
6444
6445 lock->cmd = cmd;
6446 lock->fl = flock;
6447 lock->start = flock->fl_start;
6448 lock->end = flock->fl_end;
6449 lock->flags = flags;
6450 if (lock->start == lock->end)
6451 lock->zero_len = 1;
6452 INIT_LIST_HEAD(&lock->llist);
6453 INIT_LIST_HEAD(&lock->glist);
6454 list_add_tail(&lock->llist, lock_list);
6455
6456 return lock;
6457}
6458
6459static void smb2_remove_blocked_lock(void **argv)
6460{
6461 struct file_lock *flock = (struct file_lock *)argv[0];
6462
6463 ksmbd_vfs_posix_lock_unblock(flock);
6464 wake_up(&flock->fl_wait);
6465}
6466
6467static inline bool lock_defer_pending(struct file_lock *fl)
6468{
6469 /* check pending lock waiters */
6470 return waitqueue_active(&fl->fl_wait);
6471}
6472
6473/**
6474 * smb2_lock() - handler for smb2 file lock command
6475 * @work: smb work containing lock command buffer
6476 *
6477 * Return: 0 on success, otherwise error
6478 */
6479int smb2_lock(struct ksmbd_work *work)
6480{
e5066499
NJ		 6481 struct smb2_lock_req *req = work->request_buf;
6482 struct smb2_lock_rsp *rsp = work->response_buf;
e2f34481
NJ		 6483 struct smb2_lock_element *lock_ele;
6484 struct ksmbd_file *fp = NULL;
6485 struct file_lock *flock = NULL;
6486 struct file *filp = NULL;
6487 int lock_count;
6488 int flags = 0;
6489 int cmd = 0;
6490 int err = 0, i;
50bf80a5 6491 u64 lock_start, lock_length;
e2f34481
NJ		 6492 struct ksmbd_lock *smb_lock = NULL, *cmp_lock, *tmp;
6493 int nolock = 0;
6494 LIST_HEAD(lock_list);
6495 LIST_HEAD(rollback_list);
6496 int prior_lock = 0;
6497
6498 ksmbd_debug(SMB, "Received lock request\n");
6499 fp = ksmbd_lookup_fd_slow(work,
070fb21e
NJ		 6500 le64_to_cpu(req->VolatileFileId),
6501 le64_to_cpu(req->PersistentFileId));
e2f34481
NJ		 6502 if (!fp) {
6503 ksmbd_debug(SMB, "Invalid file id for lock : %llu\n",
070fb21e 6504 le64_to_cpu(req->VolatileFileId));
e2f34481
NJ		 6505 rsp->hdr.Status = STATUS_FILE_CLOSED;
6506 goto out2;
6507 }
6508
6509 filp = fp->filp;
6510 lock_count = le16_to_cpu(req->LockCount);
6511 lock_ele = req->locks;
6512
6513 ksmbd_debug(SMB, "lock count is %d\n", lock_count);
070fb21e 6514 if (!lock_count) {
e2f34481
NJ		 6515 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
6516 goto out2;
6517 }
6518
6519 for (i = 0; i < lock_count; i++) {
6520 flags = le32_to_cpu(lock_ele[i].Flags);
6521
6522 flock = smb_flock_init(filp);
6523 if (!flock) {
6524 rsp->hdr.Status = STATUS_LOCK_NOT_GRANTED;
6525 goto out;
6526 }
6527
6528 cmd = smb2_set_flock_flags(flock, flags);
6529
50bf80a5
NJ		 6530 lock_start = le64_to_cpu(lock_ele[i].Offset);
6531 lock_length = le64_to_cpu(lock_ele[i].Length);
6532 if (lock_start > U64_MAX - lock_length) {
bde1694a 6533 pr_err("Invalid lock range requested\n");
e2f34481
NJ		 6534 rsp->hdr.Status = STATUS_INVALID_LOCK_RANGE;
6535 goto out;
6536 }
6537
50bf80a5
NJ		 6538 if (lock_start > OFFSET_MAX)
6539 flock->fl_start = OFFSET_MAX;
6540 else
6541 flock->fl_start = lock_start;
6542
e2f34481 6543 lock_length = le64_to_cpu(lock_ele[i].Length);
50bf80a5
NJ		 6544 if (lock_length > OFFSET_MAX - flock->fl_start)
6545 lock_length = OFFSET_MAX - flock->fl_start;
e2f34481
NJ		 6546
6547 flock->fl_end = flock->fl_start + lock_length;
6548
6549 if (flock->fl_end < flock->fl_start) {
6550 ksmbd_debug(SMB,
070fb21e
NJ		 6551 "the end offset(%llx) is smaller than the start offset(%llx)\n",
6552 flock->fl_end, flock->fl_start);
e2f34481
NJ		 6553 rsp->hdr.Status = STATUS_INVALID_LOCK_RANGE;
6554 goto out;
6555 }
6556
6557 /* Check conflict locks in one request */
6558 list_for_each_entry(cmp_lock, &lock_list, llist) {
6559 if (cmp_lock->fl->fl_start <= flock->fl_start &&
64b39f4a 6560 cmp_lock->fl->fl_end >= flock->fl_end) {
e2f34481 6561 if (cmp_lock->fl->fl_type != F_UNLCK &&
64b39f4a 6562 flock->fl_type != F_UNLCK) {
bde1694a 6563 pr_err("conflict two locks in one request\n");
e2f34481
NJ		 6564 rsp->hdr.Status =
6565 STATUS_INVALID_PARAMETER;
6566 goto out;
6567 }
6568 }
6569 }
6570
6571 smb_lock = smb2_lock_init(flock, cmd, flags, &lock_list);
6572 if (!smb_lock) {
6573 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
6574 goto out;
6575 }
6576 }
6577
6578 list_for_each_entry_safe(smb_lock, tmp, &lock_list, llist) {
6579 if (smb_lock->cmd < 0) {
6580 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
6581 goto out;
6582 }
6583
6584 if (!(smb_lock->flags & SMB2_LOCKFLAG_MASK)) {
6585 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
6586 goto out;
6587 }
6588
64b39f4a
NJ		 6589 if ((prior_lock & (SMB2_LOCKFLAG_EXCLUSIVE | SMB2_LOCKFLAG_SHARED) &&
6590 smb_lock->flags & SMB2_LOCKFLAG_UNLOCK) ||
6591 (prior_lock == SMB2_LOCKFLAG_UNLOCK &&
6592 !(smb_lock->flags & SMB2_LOCKFLAG_UNLOCK))) {
e2f34481
NJ		 6593 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
6594 goto out;
6595 }
6596
6597 prior_lock = smb_lock->flags;
6598
6599 if (!(smb_lock->flags & SMB2_LOCKFLAG_UNLOCK) &&
64b39f4a 6600 !(smb_lock->flags & SMB2_LOCKFLAG_FAIL_IMMEDIATELY))
e2f34481
NJ		 6601 goto no_check_gl;
6602
6603 nolock = 1;
6604 /* check locks in global list */
6605 list_for_each_entry(cmp_lock, &global_lock_list, glist) {
6606 if (file_inode(cmp_lock->fl->fl_file) !=
64b39f4a 6607 file_inode(smb_lock->fl->fl_file))
e2f34481
NJ		 6608 continue;
6609
6610 if (smb_lock->fl->fl_type == F_UNLCK) {
64b39f4a
NJ		 6611 if (cmp_lock->fl->fl_file == smb_lock->fl->fl_file &&
6612 cmp_lock->start == smb_lock->start &&
6613 cmp_lock->end == smb_lock->end &&
6614 !lock_defer_pending(cmp_lock->fl)) {
e2f34481
NJ		 6615 nolock = 0;
6616 locks_free_lock(cmp_lock->fl);
6617 list_del(&cmp_lock->glist);
6618 kfree(cmp_lock);
6619 break;
6620 }
6621 continue;
6622 }
6623
6624 if (cmp_lock->fl->fl_file == smb_lock->fl->fl_file) {
6625 if (smb_lock->flags & SMB2_LOCKFLAG_SHARED)
6626 continue;
6627 } else {
6628 if (cmp_lock->flags & SMB2_LOCKFLAG_SHARED)
6629 continue;
6630 }
6631
6632 /* check zero byte lock range */
6633 if (cmp_lock->zero_len && !smb_lock->zero_len &&
64b39f4a
NJ		 6634 cmp_lock->start > smb_lock->start &&
6635 cmp_lock->start < smb_lock->end) {
bde1694a 6636 pr_err("previous lock conflict with zero byte lock range\n");
e2f34481
NJ		 6637 rsp->hdr.Status = STATUS_LOCK_NOT_GRANTED;
6638 goto out;
6639 }
6640
6641 if (smb_lock->zero_len && !cmp_lock->zero_len &&
64b39f4a
NJ		 6642 smb_lock->start > cmp_lock->start &&
6643 smb_lock->start < cmp_lock->end) {
bde1694a 6644 pr_err("current lock conflict with zero byte lock range\n");
e2f34481
NJ		 6645 rsp->hdr.Status = STATUS_LOCK_NOT_GRANTED;
6646 goto out;
6647 }
6648
6649 if (((cmp_lock->start <= smb_lock->start &&
64b39f4a
NJ		 6650 cmp_lock->end > smb_lock->start) ||
6651 (cmp_lock->start < smb_lock->end && cmp_lock->end >= smb_lock->end)) &&
6652 !cmp_lock->zero_len && !smb_lock->zero_len) {
bde1694a 6653 pr_err("Not allow lock operation on exclusive lock range\n");
e2f34481
NJ		 6654 rsp->hdr.Status =
6655 STATUS_LOCK_NOT_GRANTED;
6656 goto out;
6657 }
6658 }
6659
6660 if (smb_lock->fl->fl_type == F_UNLCK && nolock) {
bde1694a 6661 pr_err("Try to unlock nolocked range\n");
e2f34481
NJ		 6662 rsp->hdr.Status = STATUS_RANGE_NOT_LOCKED;
6663 goto out;
6664 }
6665
6666no_check_gl:
6667 if (smb_lock->zero_len) {
6668 err = 0;
6669 goto skip;
6670 }
6671
6672 flock = smb_lock->fl;
6673 list_del(&smb_lock->llist);
6674retry:
e8c06191 6675 err = vfs_lock_file(filp, smb_lock->cmd, flock, NULL);
e2f34481
NJ		 6676skip:
6677 if (flags & SMB2_LOCKFLAG_UNLOCK) {
64b39f4a 6678 if (!err) {
e2f34481 6679 ksmbd_debug(SMB, "File unlocked\n");
64b39f4a 6680 } else if (err == -ENOENT) {
e2f34481
NJ		 6681 rsp->hdr.Status = STATUS_NOT_LOCKED;
6682 goto out;
6683 }
6684 locks_free_lock(flock);
6685 kfree(smb_lock);
6686 } else {
6687 if (err == FILE_LOCK_DEFERRED) {
6688 void **argv;
6689
6690 ksmbd_debug(SMB,
070fb21e 6691 "would have to wait for getting lock\n");
e2f34481 6692 list_add_tail(&smb_lock->glist,
070fb21e 6693 &global_lock_list);
e2f34481
NJ		 6694 list_add(&smb_lock->llist, &rollback_list);
6695
6696 argv = kmalloc(sizeof(void *), GFP_KERNEL);
6697 if (!argv) {
6698 err = -ENOMEM;
6699 goto out;
6700 }
6701 argv[0] = flock;
6702
6703 err = setup_async_work(work,
070fb21e
NJ		 6704 smb2_remove_blocked_lock,
6705 argv);
e2f34481
NJ		 6706 if (err) {
6707 rsp->hdr.Status =
6708 STATUS_INSUFFICIENT_RESOURCES;
6709 goto out;
6710 }
6711 spin_lock(&fp->f_lock);
6712 list_add(&work->fp_entry, &fp->blocked_works);
6713 spin_unlock(&fp->f_lock);
6714
6715 smb2_send_interim_resp(work, STATUS_PENDING);
6716
6717 err = ksmbd_vfs_posix_lock_wait(flock);
6718
d4075abb 6719 if (work->state != KSMBD_WORK_ACTIVE) {
e2f34481
NJ		 6720 list_del(&smb_lock->llist);
6721 list_del(&smb_lock->glist);
6722 locks_free_lock(flock);
6723
d4075abb 6724 if (work->state == KSMBD_WORK_CANCELLED) {
e2f34481
NJ		 6725 spin_lock(&fp->f_lock);
6726 list_del(&work->fp_entry);
6727 spin_unlock(&fp->f_lock);
6728 rsp->hdr.Status =
6729 STATUS_CANCELLED;
6730 kfree(smb_lock);
6731 smb2_send_interim_resp(work,
070fb21e 6732 STATUS_CANCELLED);
e2f34481
NJ		 6733 work->send_no_response = 1;
6734 goto out;
6735 }
6736 init_smb2_rsp_hdr(work);
6737 smb2_set_err_rsp(work);
6738 rsp->hdr.Status =
6739 STATUS_RANGE_NOT_LOCKED;
6740 kfree(smb_lock);
6741 goto out2;
6742 }
6743
6744 list_del(&smb_lock->llist);
6745 list_del(&smb_lock->glist);
6746 spin_lock(&fp->f_lock);
6747 list_del(&work->fp_entry);
6748 spin_unlock(&fp->f_lock);
6749 goto retry;
6750 } else if (!err) {
6751 list_add_tail(&smb_lock->glist,
070fb21e 6752 &global_lock_list);
e2f34481
NJ		 6753 list_add(&smb_lock->llist, &rollback_list);
6754 ksmbd_debug(SMB, "successful in taking lock\n");
6755 } else {
6756 rsp->hdr.Status = STATUS_LOCK_NOT_GRANTED;
6757 goto out;
6758 }
6759 }
6760 }
6761
6762 if (atomic_read(&fp->f_ci->op_count) > 1)
6763 smb_break_all_oplock(work, fp);
6764
6765 rsp->StructureSize = cpu_to_le16(4);
6766 ksmbd_debug(SMB, "successful in taking lock\n");
6767 rsp->hdr.Status = STATUS_SUCCESS;
6768 rsp->Reserved = 0;
6769 inc_rfc1001_len(rsp, 4);
6770 ksmbd_fd_put(work, fp);
6771 return err;
6772
6773out:
6774 list_for_each_entry_safe(smb_lock, tmp, &lock_list, llist) {
6775 locks_free_lock(smb_lock->fl);
6776 list_del(&smb_lock->llist);
6777 kfree(smb_lock);
6778 }
6779
6780 list_for_each_entry_safe(smb_lock, tmp, &rollback_list, llist) {
6781 struct file_lock *rlock = NULL;
6782
6783 rlock = smb_flock_init(filp);
6784 rlock->fl_type = F_UNLCK;
6785 rlock->fl_start = smb_lock->start;
6786 rlock->fl_end = smb_lock->end;
6787
e8c06191 6788 err = vfs_lock_file(filp, 0, rlock, NULL);
e2f34481 6789 if (err)
bde1694a 6790 pr_err("rollback unlock fail : %d\n", err);
e2f34481
NJ		 6791 list_del(&smb_lock->llist);
6792 list_del(&smb_lock->glist);
6793 locks_free_lock(smb_lock->fl);
6794 locks_free_lock(rlock);
6795 kfree(smb_lock);
6796 }
6797out2:
6798 ksmbd_debug(SMB, "failed in taking lock(flags : %x)\n", flags);
6799 smb2_set_err_rsp(work);
6800 ksmbd_fd_put(work, fp);
6801 return 0;
6802}
6803
64b39f4a 6804static int fsctl_copychunk(struct ksmbd_work *work, struct smb2_ioctl_req *req,
070fb21e 6805 struct smb2_ioctl_rsp *rsp)
e2f34481
NJ		 6806{
6807 struct copychunk_ioctl_req *ci_req;
6808 struct copychunk_ioctl_rsp *ci_rsp;
6809 struct ksmbd_file *src_fp = NULL, *dst_fp = NULL;
6810 struct srv_copychunk *chunks;
6811 unsigned int i, chunk_count, chunk_count_written = 0;
6812 unsigned int chunk_size_written = 0;
6813 loff_t total_size_written = 0;
6814 int ret, cnt_code;
6815
6816 cnt_code = le32_to_cpu(req->CntCode);
6817 ci_req = (struct copychunk_ioctl_req *)&req->Buffer[0];
6818 ci_rsp = (struct copychunk_ioctl_rsp *)&rsp->Buffer[0];
6819
6820 rsp->VolatileFileId = req->VolatileFileId;
6821 rsp->PersistentFileId = req->PersistentFileId;
64b39f4a
NJ		 6822 ci_rsp->ChunksWritten =
6823 cpu_to_le32(ksmbd_server_side_copy_max_chunk_count());
6824 ci_rsp->ChunkBytesWritten =
6825 cpu_to_le32(ksmbd_server_side_copy_max_chunk_size());
6826 ci_rsp->TotalBytesWritten =
6827 cpu_to_le32(ksmbd_server_side_copy_max_total_size());
e2f34481
NJ		 6828
6829 chunks = (struct srv_copychunk *)&ci_req->Chunks[0];
6830 chunk_count = le32_to_cpu(ci_req->ChunkCount);
6831 total_size_written = 0;
6832
6833 /* verify the SRV_COPYCHUNK_COPY packet */
6834 if (chunk_count > ksmbd_server_side_copy_max_chunk_count() ||
64b39f4a
NJ		 6835 le32_to_cpu(req->InputCount) <
6836 offsetof(struct copychunk_ioctl_req, Chunks) +
6837 chunk_count * sizeof(struct srv_copychunk)) {
e2f34481
NJ		 6838 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
6839 return -EINVAL;
6840 }
6841
6842 for (i = 0; i < chunk_count; i++) {
6843 if (le32_to_cpu(chunks[i].Length) == 0 ||
64b39f4a 6844 le32_to_cpu(chunks[i].Length) > ksmbd_server_side_copy_max_chunk_size())
e2f34481
NJ		 6845 break;
6846 total_size_written += le32_to_cpu(chunks[i].Length);
6847 }
64b39f4a
NJ		 6848
6849 if (i < chunk_count ||
6850 total_size_written > ksmbd_server_side_copy_max_total_size()) {
e2f34481
NJ		 6851 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
6852 return -EINVAL;
6853 }
6854
6855 src_fp = ksmbd_lookup_foreign_fd(work,
070fb21e 6856 le64_to_cpu(ci_req->ResumeKey[0]));
e2f34481 6857 dst_fp = ksmbd_lookup_fd_slow(work,
070fb21e
NJ		 6858 le64_to_cpu(req->VolatileFileId),
6859 le64_to_cpu(req->PersistentFileId));
e2f34481 6860 ret = -EINVAL;
64b39f4a
NJ		 6861 if (!src_fp ||
6862 src_fp->persistent_id != le64_to_cpu(ci_req->ResumeKey[1])) {
e2f34481
NJ		 6863 rsp->hdr.Status = STATUS_OBJECT_NAME_NOT_FOUND;
6864 goto out;
6865 }
64b39f4a 6866
e2f34481
NJ		 6867 if (!dst_fp) {
6868 rsp->hdr.Status = STATUS_FILE_CLOSED;
6869 goto out;
6870 }
6871
6872 /*
6873 * FILE_READ_DATA should only be included in
6874 * the FSCTL_COPYCHUNK case
6875 */
070fb21e
NJ		 6876 if (cnt_code == FSCTL_COPYCHUNK &&
6877 !(dst_fp->daccess & (FILE_READ_DATA_LE | FILE_GENERIC_READ_LE))) {
e2f34481
NJ		 6878 rsp->hdr.Status = STATUS_ACCESS_DENIED;
6879 goto out;
6880 }
6881
6882 ret = ksmbd_vfs_copy_file_ranges(work, src_fp, dst_fp,
070fb21e
NJ		 6883 chunks, chunk_count,
6884 &chunk_count_written,
6885 &chunk_size_written,
6886 &total_size_written);
e2f34481
NJ		 6887 if (ret < 0) {
6888 if (ret == -EACCES)
6889 rsp->hdr.Status = STATUS_ACCESS_DENIED;
6890 if (ret == -EAGAIN)
6891 rsp->hdr.Status = STATUS_FILE_LOCK_CONFLICT;
6892 else if (ret == -EBADF)
6893 rsp->hdr.Status = STATUS_INVALID_HANDLE;
6894 else if (ret == -EFBIG || ret == -ENOSPC)
6895 rsp->hdr.Status = STATUS_DISK_FULL;
6896 else if (ret == -EINVAL)
6897 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
6898 else if (ret == -EISDIR)
6899 rsp->hdr.Status = STATUS_FILE_IS_A_DIRECTORY;
6900 else if (ret == -E2BIG)
6901 rsp->hdr.Status = STATUS_INVALID_VIEW_SIZE;
6902 else
6903 rsp->hdr.Status = STATUS_UNEXPECTED_IO_ERROR;
6904 }
6905
6906 ci_rsp->ChunksWritten = cpu_to_le32(chunk_count_written);
6907 ci_rsp->ChunkBytesWritten = cpu_to_le32(chunk_size_written);
6908 ci_rsp->TotalBytesWritten = cpu_to_le32(total_size_written);
6909out:
6910 ksmbd_fd_put(work, src_fp);
6911 ksmbd_fd_put(work, dst_fp);
6912 return ret;
6913}
6914
6915static __be32 idev_ipv4_address(struct in_device *idev)
6916{
6917 __be32 addr = 0;
6918
6919 struct in_ifaddr *ifa;
6920
6921 rcu_read_lock();
6922 in_dev_for_each_ifa_rcu(ifa, idev) {
6923 if (ifa->ifa_flags & IFA_F_SECONDARY)
6924 continue;
6925
6926 addr = ifa->ifa_address;
6927 break;
6928 }
6929 rcu_read_unlock();
6930 return addr;
6931}
6932
6933static int fsctl_query_iface_info_ioctl(struct ksmbd_conn *conn,
070fb21e
NJ		 6934 struct smb2_ioctl_req *req,
6935 struct smb2_ioctl_rsp *rsp)
e2f34481
NJ		 6936{
6937 struct network_interface_info_ioctl_rsp *nii_rsp = NULL;
6938 int nbytes = 0;
6939 struct net_device *netdev;
6940 struct sockaddr_storage_rsp *sockaddr_storage;
6941 unsigned int flags;
6942 unsigned long long speed;
6943
6944 rtnl_lock();
6945 for_each_netdev(&init_net, netdev) {
6946 if (unlikely(!netdev)) {
6947 rtnl_unlock();
6948 return -EINVAL;
6949 }
6950
6951 if (netdev->type == ARPHRD_LOOPBACK)
6952 continue;
6953
6954 flags = dev_get_flags(netdev);
6955 if (!(flags & IFF_RUNNING))
6956 continue;
6957
6958 nii_rsp = (struct network_interface_info_ioctl_rsp *)
6959 &rsp->Buffer[nbytes];
6960 nii_rsp->IfIndex = cpu_to_le32(netdev->ifindex);
6961
6962 /* TODO: specify the RDMA capabilities */
6963 if (netdev->num_tx_queues > 1)
6964 nii_rsp->Capability = cpu_to_le32(RSS_CAPABLE);
6965 else
6966 nii_rsp->Capability = 0;
6967
6968 nii_rsp->Next = cpu_to_le32(152);
6969 nii_rsp->Reserved = 0;
6970
6971 if (netdev->ethtool_ops->get_link_ksettings) {
6972 struct ethtool_link_ksettings cmd;
6973
6974 netdev->ethtool_ops->get_link_ksettings(netdev, &cmd);
6975 speed = cmd.base.speed;
6976 } else {
bde1694a
NJ		 6977 pr_err("%s %s\n", netdev->name,
6978 "speed is unknown, defaulting to 1Gb/sec");
e2f34481
NJ		 6979 speed = SPEED_1000;
6980 }
6981
6982 speed *= 1000000;
6983 nii_rsp->LinkSpeed = cpu_to_le64(speed);
6984
6985 sockaddr_storage = (struct sockaddr_storage_rsp *)
6986 nii_rsp->SockAddr_Storage;
6987 memset(sockaddr_storage, 0, 128);
6988
6989 if (conn->peer_addr.ss_family == PF_INET) {
6990 struct in_device *idev;
6991
6992 sockaddr_storage->Family = cpu_to_le16(INTERNETWORK);
6993 sockaddr_storage->addr4.Port = 0;
6994
6995 idev = __in_dev_get_rtnl(netdev);
6996 if (!idev)
6997 continue;
6998 sockaddr_storage->addr4.IPv4address =
6999 idev_ipv4_address(idev);
7000 } else {
7001 struct inet6_dev *idev6;
7002 struct inet6_ifaddr *ifa;
7003 __u8 *ipv6_addr = sockaddr_storage->addr6.IPv6address;
7004
7005 sockaddr_storage->Family = cpu_to_le16(INTERNETWORKV6);
7006 sockaddr_storage->addr6.Port = 0;
7007 sockaddr_storage->addr6.FlowInfo = 0;
7008
7009 idev6 = __in6_dev_get(netdev);
7010 if (!idev6)
7011 continue;
7012
7013 list_for_each_entry(ifa, &idev6->addr_list, if_list) {
7014 if (ifa->flags & (IFA_F_TENTATIVE |
7015 IFA_F_DEPRECATED))
7016 continue;
7017 memcpy(ipv6_addr, ifa->addr.s6_addr, 16);
7018 break;
7019 }
7020 sockaddr_storage->addr6.ScopeId = 0;
7021 }
7022
7023 nbytes += sizeof(struct network_interface_info_ioctl_rsp);
7024 }
7025 rtnl_unlock();
7026
7027 /* zero if this is last one */
7028 if (nii_rsp)
7029 nii_rsp->Next = 0;
7030
7031 if (!nbytes) {
7032 rsp->hdr.Status = STATUS_BUFFER_TOO_SMALL;
7033 return -EINVAL;
7034 }
7035
7036 rsp->PersistentFileId = cpu_to_le64(SMB2_NO_FID);
7037 rsp->VolatileFileId = cpu_to_le64(SMB2_NO_FID);
7038 return nbytes;
7039}
7040
e2f34481 7041static int fsctl_validate_negotiate_info(struct ksmbd_conn *conn,
070fb21e
NJ		 7042 struct validate_negotiate_info_req *neg_req,
7043 struct validate_negotiate_info_rsp *neg_rsp)
e2f34481
NJ		 7044{
7045 int ret = 0;
7046 int dialect;
7047
7048 dialect = ksmbd_lookup_dialect_by_id(neg_req->Dialects,
070fb21e 7049 neg_req->DialectCount);
e2f34481
NJ		 7050 if (dialect == BAD_PROT_ID || dialect != conn->dialect) {
7051 ret = -EINVAL;
7052 goto err_out;
7053 }
7054
7055 if (strncmp(neg_req->Guid, conn->ClientGUID, SMB2_CLIENT_GUID_SIZE)) {
7056 ret = -EINVAL;
7057 goto err_out;
7058 }
7059
7060 if (le16_to_cpu(neg_req->SecurityMode) != conn->cli_sec_mode) {
7061 ret = -EINVAL;
7062 goto err_out;
7063 }
7064
7065 if (le32_to_cpu(neg_req->Capabilities) != conn->cli_cap) {
7066 ret = -EINVAL;
7067 goto err_out;
7068 }
7069
7070 neg_rsp->Capabilities = cpu_to_le32(conn->vals->capabilities);
7071 memset(neg_rsp->Guid, 0, SMB2_CLIENT_GUID_SIZE);
7072 neg_rsp->SecurityMode = cpu_to_le16(conn->srv_sec_mode);
7073 neg_rsp->Dialect = cpu_to_le16(conn->dialect);
7074err_out:
7075 return ret;
7076}
7077
64b39f4a 7078static int fsctl_query_allocated_ranges(struct ksmbd_work *work, u64 id,
070fb21e
NJ		 7079 struct file_allocated_range_buffer *qar_req,
7080 struct file_allocated_range_buffer *qar_rsp,
7081 int in_count, int *out_count)
e2f34481
NJ		 7082{
7083 struct ksmbd_file *fp;
7084 loff_t start, length;
7085 int ret = 0;
7086
7087 *out_count = 0;
7088 if (in_count == 0)
7089 return -EINVAL;
7090
7091 fp = ksmbd_lookup_fd_fast(work, id);
7092 if (!fp)
7093 return -ENOENT;
7094
7095 start = le64_to_cpu(qar_req->file_offset);
7096 length = le64_to_cpu(qar_req->length);
7097
7098 ret = ksmbd_vfs_fqar_lseek(fp, start, length,
070fb21e 7099 qar_rsp, in_count, out_count);
e2f34481
NJ		 7100 if (ret && ret != -E2BIG)
7101 *out_count = 0;
7102
7103 ksmbd_fd_put(work, fp);
7104 return ret;
7105}
7106
64b39f4a 7107static int fsctl_pipe_transceive(struct ksmbd_work *work, u64 id,
070fb21e
NJ		 7108 int out_buf_len, struct smb2_ioctl_req *req,
7109 struct smb2_ioctl_rsp *rsp)
e2f34481
NJ		 7110{
7111 struct ksmbd_rpc_command *rpc_resp;
7112 char *data_buf = (char *)&req->Buffer[0];
7113 int nbytes = 0;
7114
64b39f4a 7115 rpc_resp = ksmbd_rpc_ioctl(work->sess, id, data_buf,
070fb21e 7116 le32_to_cpu(req->InputCount));
e2f34481
NJ		 7117 if (rpc_resp) {
7118 if (rpc_resp->flags == KSMBD_RPC_SOME_NOT_MAPPED) {
7119 /*
7120 * set STATUS_SOME_NOT_MAPPED response
7121 * for unknown domain sid.
7122 */
7123 rsp->hdr.Status = STATUS_SOME_NOT_MAPPED;
7124 } else if (rpc_resp->flags == KSMBD_RPC_ENOTIMPLEMENTED) {
7125 rsp->hdr.Status = STATUS_NOT_SUPPORTED;
7126 goto out;
7127 } else if (rpc_resp->flags != KSMBD_RPC_OK) {
7128 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
7129 goto out;
7130 }
7131
7132 nbytes = rpc_resp->payload_sz;
7133 if (rpc_resp->payload_sz > out_buf_len) {
7134 rsp->hdr.Status = STATUS_BUFFER_OVERFLOW;
7135 nbytes = out_buf_len;
7136 }
7137
7138 if (!rpc_resp->payload_sz) {
7139 rsp->hdr.Status =
7140 STATUS_UNEXPECTED_IO_ERROR;
7141 goto out;
7142 }
7143
7144 memcpy((char *)rsp->Buffer, rpc_resp->payload, nbytes);
7145 }
7146out:
79f6b11a 7147 kvfree(rpc_resp);
e2f34481
NJ		 7148 return nbytes;
7149}
7150
64b39f4a 7151static inline int fsctl_set_sparse(struct ksmbd_work *work, u64 id,
070fb21e 7152 struct file_sparse *sparse)
e2f34481
NJ		 7153{
7154 struct ksmbd_file *fp;
7155 int ret = 0;
7156 __le32 old_fattr;
7157
7158 fp = ksmbd_lookup_fd_fast(work, id);
7159 if (!fp)
7160 return -ENOENT;
7161
7162 old_fattr = fp->f_ci->m_fattr;
7163 if (sparse->SetSparse)
7164 fp->f_ci->m_fattr |= ATTR_SPARSE_FILE_LE;
7165 else
7166 fp->f_ci->m_fattr &= ~ATTR_SPARSE_FILE_LE;
7167
7168 if (fp->f_ci->m_fattr != old_fattr &&
64b39f4a
NJ		 7169 test_share_config_flag(work->tcon->share_conf,
7170 KSMBD_SHARE_FLAG_STORE_DOS_ATTRS)) {
e2f34481
NJ		 7171 struct xattr_dos_attrib da;
7172
7173 ret = ksmbd_vfs_get_dos_attrib_xattr(fp->filp->f_path.dentry, &da);
7174 if (ret <= 0)
7175 goto out;
7176
7177 da.attr = le32_to_cpu(fp->f_ci->m_fattr);
7178 ret = ksmbd_vfs_set_dos_attrib_xattr(fp->filp->f_path.dentry, &da);
7179 if (ret)
7180 fp->f_ci->m_fattr = old_fattr;
7181 }
7182
7183out:
7184 ksmbd_fd_put(work, fp);
7185 return ret;
7186}
7187
7188static int fsctl_request_resume_key(struct ksmbd_work *work,
070fb21e
NJ		 7189 struct smb2_ioctl_req *req,
7190 struct resume_key_ioctl_rsp *key_rsp)
e2f34481
NJ		 7191{
7192 struct ksmbd_file *fp;
7193
7194 fp = ksmbd_lookup_fd_slow(work,
070fb21e
NJ		 7195 le64_to_cpu(req->VolatileFileId),
7196 le64_to_cpu(req->PersistentFileId));
e2f34481
NJ		 7197 if (!fp)
7198 return -ENOENT;
7199
7200 memset(key_rsp, 0, sizeof(*key_rsp));
7201 key_rsp->ResumeKey[0] = req->VolatileFileId;
7202 key_rsp->ResumeKey[1] = req->PersistentFileId;
7203 ksmbd_fd_put(work, fp);
7204
7205 return 0;
7206}
7207
7208/**
7209 * smb2_ioctl() - handler for smb2 ioctl command
7210 * @work: smb work containing ioctl command buffer
7211 *
7212 * Return: 0 on success, otherwise error
7213 */
7214int smb2_ioctl(struct ksmbd_work *work)
7215{
7216 struct smb2_ioctl_req *req;
7217 struct smb2_ioctl_rsp *rsp, *rsp_org;
7218 int cnt_code, nbytes = 0;
7219 int out_buf_len;
64b39f4a 7220 u64 id = KSMBD_NO_FID;
e2f34481
NJ		 7221 struct ksmbd_conn *conn = work->conn;
7222 int ret = 0;
7223
e5066499 7224 rsp_org = work->response_buf;
e2f34481
NJ		 7225 if (work->next_smb2_rcv_hdr_off) {
7226 req = REQUEST_BUF_NEXT(work);
7227 rsp = RESPONSE_BUF_NEXT(work);
7228 if (!HAS_FILE_ID(le64_to_cpu(req->VolatileFileId))) {
7229 ksmbd_debug(SMB, "Compound request set FID = %u\n",
070fb21e 7230 work->compound_fid);
e2f34481
NJ		 7231 id = work->compound_fid;
7232 }
7233 } else {
e5066499
NJ		 7234 req = work->request_buf;
7235 rsp = work->response_buf;
e2f34481
NJ		 7236 }
7237
7238 if (!HAS_FILE_ID(id))
7239 id = le64_to_cpu(req->VolatileFileId);
7240
7241 if (req->Flags != cpu_to_le32(SMB2_0_IOCTL_IS_FSCTL)) {
7242 rsp->hdr.Status = STATUS_NOT_SUPPORTED;
7243 goto out;
7244 }
7245
7246 cnt_code = le32_to_cpu(req->CntCode);
7247 out_buf_len = le32_to_cpu(req->MaxOutputResponse);
7248 out_buf_len = min(KSMBD_IPC_MAX_PAYLOAD, out_buf_len);
7249
7250 switch (cnt_code) {
7251 case FSCTL_DFS_GET_REFERRALS:
7252 case FSCTL_DFS_GET_REFERRALS_EX:
7253 /* Not support DFS yet */
7254 rsp->hdr.Status = STATUS_FS_DRIVER_REQUIRED;
7255 goto out;
7256 case FSCTL_CREATE_OR_GET_OBJECT_ID:
7257 {
7258 struct file_object_buf_type1_ioctl_rsp *obj_buf;
7259
7260 nbytes = sizeof(struct file_object_buf_type1_ioctl_rsp);
7261 obj_buf = (struct file_object_buf_type1_ioctl_rsp *)
7262 &rsp->Buffer[0];
7263
7264 /*
7265 * TODO: This is dummy implementation to pass smbtorture
7266 * Need to check correct response later
7267 */
7268 memset(obj_buf->ObjectId, 0x0, 16);
7269 memset(obj_buf->BirthVolumeId, 0x0, 16);
7270 memset(obj_buf->BirthObjectId, 0x0, 16);
7271 memset(obj_buf->DomainId, 0x0, 16);
7272
7273 break;
7274 }
7275 case FSCTL_PIPE_TRANSCEIVE:
7276 nbytes = fsctl_pipe_transceive(work, id, out_buf_len, req, rsp);
7277 break;
7278 case FSCTL_VALIDATE_NEGOTIATE_INFO:
7279 if (conn->dialect < SMB30_PROT_ID) {
7280 ret = -EOPNOTSUPP;
7281 goto out;
7282 }
7283
7284 ret = fsctl_validate_negotiate_info(conn,
7285 (struct validate_negotiate_info_req *)&req->Buffer[0],
7286 (struct validate_negotiate_info_rsp *)&rsp->Buffer[0]);
7287 if (ret < 0)
7288 goto out;
7289
7290 nbytes = sizeof(struct validate_negotiate_info_rsp);
7291 rsp->PersistentFileId = cpu_to_le64(SMB2_NO_FID);
7292 rsp->VolatileFileId = cpu_to_le64(SMB2_NO_FID);
7293 break;
7294 case FSCTL_QUERY_NETWORK_INTERFACE_INFO:
7295 nbytes = fsctl_query_iface_info_ioctl(conn, req, rsp);
7296 if (nbytes < 0)
7297 goto out;
7298 break;
7299 case FSCTL_REQUEST_RESUME_KEY:
7300 if (out_buf_len < sizeof(struct resume_key_ioctl_rsp)) {
7301 ret = -EINVAL;
7302 goto out;
7303 }
7304
7305 ret = fsctl_request_resume_key(work, req,
070fb21e 7306 (struct resume_key_ioctl_rsp *)&rsp->Buffer[0]);
e2f34481
NJ		 7307 if (ret < 0)
7308 goto out;
7309 rsp->PersistentFileId = req->PersistentFileId;
7310 rsp->VolatileFileId = req->VolatileFileId;
7311 nbytes = sizeof(struct resume_key_ioctl_rsp);
7312 break;
7313 case FSCTL_COPYCHUNK:
7314 case FSCTL_COPYCHUNK_WRITE:
64b39f4a 7315 if (!test_tree_conn_flag(work->tcon, KSMBD_TREE_CONN_FLAG_WRITABLE)) {
e2f34481 7316 ksmbd_debug(SMB,
070fb21e 7317 "User does not have write permission\n");
e2f34481
NJ		 7318 ret = -EACCES;
7319 goto out;
7320 }
7321
7322 if (out_buf_len < sizeof(struct copychunk_ioctl_rsp)) {
7323 ret = -EINVAL;
7324 goto out;
7325 }
7326
7327 nbytes = sizeof(struct copychunk_ioctl_rsp);
7328 fsctl_copychunk(work, req, rsp);
7329 break;
7330 case FSCTL_SET_SPARSE:
7331 ret = fsctl_set_sparse(work, id,
070fb21e 7332 (struct file_sparse *)&req->Buffer[0]);
e2f34481
NJ		 7333 if (ret < 0)
7334 goto out;
7335 break;
7336 case FSCTL_SET_ZERO_DATA:
7337 {
7338 struct file_zero_data_information *zero_data;
7339 struct ksmbd_file *fp;
7340 loff_t off, len;
7341
64b39f4a 7342 if (!test_tree_conn_flag(work->tcon, KSMBD_TREE_CONN_FLAG_WRITABLE)) {
e2f34481 7343 ksmbd_debug(SMB,
070fb21e 7344 "User does not have write permission\n");
e2f34481
NJ		 7345 ret = -EACCES;
7346 goto out;
7347 }
7348
7349 zero_data =
7350 (struct file_zero_data_information *)&req->Buffer[0];
7351
7352 fp = ksmbd_lookup_fd_fast(work, id);
7353 if (!fp) {
7354 ret = -ENOENT;
7355 goto out;
7356 }
7357
7358 off = le64_to_cpu(zero_data->FileOffset);
7359 len = le64_to_cpu(zero_data->BeyondFinalZero) - off;
7360
7361 ret = ksmbd_vfs_zero_data(work, fp, off, len);
7362 ksmbd_fd_put(work, fp);
7363 if (ret < 0)
7364 goto out;
7365 break;
7366 }
7367 case FSCTL_QUERY_ALLOCATED_RANGES:
7368 ret = fsctl_query_allocated_ranges(work, id,
7369 (struct file_allocated_range_buffer *)&req->Buffer[0],
7370 (struct file_allocated_range_buffer *)&rsp->Buffer[0],
7371 out_buf_len /
7372 sizeof(struct file_allocated_range_buffer), &nbytes);
7373 if (ret == -E2BIG) {
7374 rsp->hdr.Status = STATUS_BUFFER_OVERFLOW;
7375 } else if (ret < 0) {
7376 nbytes = 0;
7377 goto out;
7378 }
7379
7380 nbytes *= sizeof(struct file_allocated_range_buffer);
7381 break;
7382 case FSCTL_GET_REPARSE_POINT:
7383 {
7384 struct reparse_data_buffer *reparse_ptr;
7385 struct ksmbd_file *fp;
7386
7387 reparse_ptr = (struct reparse_data_buffer *)&rsp->Buffer[0];
7388 fp = ksmbd_lookup_fd_fast(work, id);
7389 if (!fp) {
bde1694a 7390 pr_err("not found fp!!\n");
e2f34481
NJ		 7391 ret = -ENOENT;
7392 goto out;
7393 }
7394
7395 reparse_ptr->ReparseTag =
7396 smb2_get_reparse_tag_special_file(FP_INODE(fp)->i_mode);
7397 reparse_ptr->ReparseDataLength = 0;
7398 ksmbd_fd_put(work, fp);
7399 nbytes = sizeof(struct reparse_data_buffer);
7400 break;
7401 }
eb817368
NJ		 7402 case FSCTL_DUPLICATE_EXTENTS_TO_FILE:
7403 {
7404 struct ksmbd_file *fp_in, *fp_out = NULL;
7405 struct duplicate_extents_to_file *dup_ext;
7406 loff_t src_off, dst_off, length, cloned;
7407
7408 dup_ext = (struct duplicate_extents_to_file *)&req->Buffer[0];
7409
7410 fp_in = ksmbd_lookup_fd_slow(work, dup_ext->VolatileFileHandle,
070fb21e 7411 dup_ext->PersistentFileHandle);
eb817368 7412 if (!fp_in) {
bde1694a 7413 pr_err("not found file handle in duplicate extent to file\n");
eb817368
NJ		 7414 ret = -ENOENT;
7415 goto out;
7416 }
7417
7418 fp_out = ksmbd_lookup_fd_fast(work, id);
7419 if (!fp_out) {
bde1694a 7420 pr_err("not found fp\n");
eb817368
NJ		 7421 ret = -ENOENT;
7422 goto dup_ext_out;
7423 }
7424
7425 src_off = le64_to_cpu(dup_ext->SourceFileOffset);
7426 dst_off = le64_to_cpu(dup_ext->TargetFileOffset);
7427 length = le64_to_cpu(dup_ext->ByteCount);
7428 cloned = vfs_clone_file_range(fp_in->filp, src_off, fp_out->filp,
070fb21e 7429 dst_off, length, 0);
eb817368
NJ		 7430 if (cloned == -EXDEV || cloned == -EOPNOTSUPP) {
7431 ret = -EOPNOTSUPP;
7432 goto dup_ext_out;
7433 } else if (cloned != length) {
f8524776
NJ		 7434 cloned = vfs_copy_file_range(fp_in->filp, src_off,
7435 fp_out->filp, dst_off, length, 0);
eb817368
NJ		 7436 if (cloned != length) {
7437 if (cloned < 0)
7438 ret = cloned;
7439 else
7440 ret = -EINVAL;
7441 }
7442 }
7443
7444dup_ext_out:
7445 ksmbd_fd_put(work, fp_in);
7446 ksmbd_fd_put(work, fp_out);
7447 if (ret < 0)
7448 goto out;
7449 break;
7450 }
e2f34481
NJ		 7451 default:
7452 ksmbd_debug(SMB, "not implemented yet ioctl command 0x%x\n",
070fb21e 7453 cnt_code);
e2f34481
NJ		 7454 ret = -EOPNOTSUPP;
7455 goto out;
7456 }
7457
7458 rsp->CntCode = cpu_to_le32(cnt_code);
7459 rsp->InputCount = cpu_to_le32(0);
7460 rsp->InputOffset = cpu_to_le32(112);
7461 rsp->OutputOffset = cpu_to_le32(112);
7462 rsp->OutputCount = cpu_to_le32(nbytes);
7463 rsp->StructureSize = cpu_to_le16(49);
7464 rsp->Reserved = cpu_to_le16(0);
7465 rsp->Flags = cpu_to_le32(0);
7466 rsp->Reserved2 = cpu_to_le32(0);
7467 inc_rfc1001_len(rsp_org, 48 + nbytes);
7468
7469 return 0;
7470
7471out:
7472 if (ret == -EACCES)
7473 rsp->hdr.Status = STATUS_ACCESS_DENIED;
7474 else if (ret == -ENOENT)
7475 rsp->hdr.Status = STATUS_OBJECT_NAME_NOT_FOUND;
7476 else if (ret == -EOPNOTSUPP)
7477 rsp->hdr.Status = STATUS_NOT_SUPPORTED;
7478 else if (ret < 0 || rsp->hdr.Status == 0)
7479 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
7480 smb2_set_err_rsp(work);
7481 return 0;
7482}
7483
7484/**
7485 * smb20_oplock_break_ack() - handler for smb2.0 oplock break command
7486 * @work: smb work containing oplock break command buffer
7487 *
7488 * Return: 0
7489 */
7490static void smb20_oplock_break_ack(struct ksmbd_work *work)
7491{
e5066499
NJ		 7492 struct smb2_oplock_break *req = work->request_buf;
7493 struct smb2_oplock_break *rsp = work->response_buf;
e2f34481
NJ		 7494 struct ksmbd_file *fp;
7495 struct oplock_info *opinfo = NULL;
7496 __le32 err = 0;
7497 int ret = 0;
64b39f4a 7498 u64 volatile_id, persistent_id;
e2f34481
NJ		 7499 char req_oplevel = 0, rsp_oplevel = 0;
7500 unsigned int oplock_change_type;
7501
7502 volatile_id = le64_to_cpu(req->VolatileFid);
7503 persistent_id = le64_to_cpu(req->PersistentFid);
7504 req_oplevel = req->OplockLevel;
7505 ksmbd_debug(OPLOCK, "v_id %llu, p_id %llu request oplock level %d\n",
7506 volatile_id, persistent_id, req_oplevel);
7507
7508 fp = ksmbd_lookup_fd_slow(work, volatile_id, persistent_id);
7509 if (!fp) {
7510 rsp->hdr.Status = STATUS_FILE_CLOSED;
7511 smb2_set_err_rsp(work);
7512 return;
7513 }
7514
7515 opinfo = opinfo_get(fp);
7516 if (!opinfo) {
bde1694a 7517 pr_err("unexpected null oplock_info\n");
e2f34481
NJ		 7518 rsp->hdr.Status = STATUS_INVALID_OPLOCK_PROTOCOL;
7519 smb2_set_err_rsp(work);
7520 ksmbd_fd_put(work, fp);
7521 return;
7522 }
7523
7524 if (opinfo->level == SMB2_OPLOCK_LEVEL_NONE) {
7525 rsp->hdr.Status = STATUS_INVALID_OPLOCK_PROTOCOL;
7526 goto err_out;
7527 }
7528
7529 if (opinfo->op_state == OPLOCK_STATE_NONE) {
7530 ksmbd_debug(SMB, "unexpected oplock state 0x%x\n", opinfo->op_state);
7531 rsp->hdr.Status = STATUS_UNSUCCESSFUL;
7532 goto err_out;
7533 }
7534
64b39f4a
NJ		 7535 if ((opinfo->level == SMB2_OPLOCK_LEVEL_EXCLUSIVE ||
7536 opinfo->level == SMB2_OPLOCK_LEVEL_BATCH) &&
7537 (req_oplevel != SMB2_OPLOCK_LEVEL_II &&
7538 req_oplevel != SMB2_OPLOCK_LEVEL_NONE)) {
e2f34481
NJ		 7539 err = STATUS_INVALID_OPLOCK_PROTOCOL;
7540 oplock_change_type = OPLOCK_WRITE_TO_NONE;
64b39f4a
NJ		 7541 } else if (opinfo->level == SMB2_OPLOCK_LEVEL_II &&
7542 req_oplevel != SMB2_OPLOCK_LEVEL_NONE) {
e2f34481
NJ		 7543 err = STATUS_INVALID_OPLOCK_PROTOCOL;
7544 oplock_change_type = OPLOCK_READ_TO_NONE;
64b39f4a
NJ		 7545 } else if (req_oplevel == SMB2_OPLOCK_LEVEL_II ||
7546 req_oplevel == SMB2_OPLOCK_LEVEL_NONE) {
e2f34481 7547 err = STATUS_INVALID_DEVICE_STATE;
64b39f4a
NJ		 7548 if ((opinfo->level == SMB2_OPLOCK_LEVEL_EXCLUSIVE ||
7549 opinfo->level == SMB2_OPLOCK_LEVEL_BATCH) &&
7550 req_oplevel == SMB2_OPLOCK_LEVEL_II) {
e2f34481 7551 oplock_change_type = OPLOCK_WRITE_TO_READ;
64b39f4a
NJ		 7552 } else if ((opinfo->level == SMB2_OPLOCK_LEVEL_EXCLUSIVE ||
7553 opinfo->level == SMB2_OPLOCK_LEVEL_BATCH) &&
7554 req_oplevel == SMB2_OPLOCK_LEVEL_NONE) {
e2f34481 7555 oplock_change_type = OPLOCK_WRITE_TO_NONE;
64b39f4a
NJ		 7556 } else if (opinfo->level == SMB2_OPLOCK_LEVEL_II &&
7557 req_oplevel == SMB2_OPLOCK_LEVEL_NONE) {
e2f34481 7558 oplock_change_type = OPLOCK_READ_TO_NONE;
64b39f4a 7559 } else {
e2f34481 7560 oplock_change_type = 0;
64b39f4a
NJ		 7561 }
7562 } else {
e2f34481 7563 oplock_change_type = 0;
64b39f4a 7564 }
e2f34481
NJ		 7565
7566 switch (oplock_change_type) {
7567 case OPLOCK_WRITE_TO_READ:
7568 ret = opinfo_write_to_read(opinfo);
7569 rsp_oplevel = SMB2_OPLOCK_LEVEL_II;
7570 break;
7571 case OPLOCK_WRITE_TO_NONE:
7572 ret = opinfo_write_to_none(opinfo);
7573 rsp_oplevel = SMB2_OPLOCK_LEVEL_NONE;
7574 break;
7575 case OPLOCK_READ_TO_NONE:
7576 ret = opinfo_read_to_none(opinfo);
7577 rsp_oplevel = SMB2_OPLOCK_LEVEL_NONE;
7578 break;
7579 default:
bde1694a
NJ		 7580 pr_err("unknown oplock change 0x%x -> 0x%x\n",
7581 opinfo->level, rsp_oplevel);
e2f34481
NJ		 7582 }
7583
7584 if (ret < 0) {
7585 rsp->hdr.Status = err;
7586 goto err_out;
7587 }
7588
7589 opinfo_put(opinfo);
7590 ksmbd_fd_put(work, fp);
7591 opinfo->op_state = OPLOCK_STATE_NONE;
7592 wake_up_interruptible_all(&opinfo->oplock_q);
7593
7594 rsp->StructureSize = cpu_to_le16(24);
7595 rsp->OplockLevel = rsp_oplevel;
7596 rsp->Reserved = 0;
7597 rsp->Reserved2 = 0;
7598 rsp->VolatileFid = cpu_to_le64(volatile_id);
7599 rsp->PersistentFid = cpu_to_le64(persistent_id);
7600 inc_rfc1001_len(rsp, 24);
7601 return;
7602
7603err_out:
7604 opinfo->op_state = OPLOCK_STATE_NONE;
7605 wake_up_interruptible_all(&opinfo->oplock_q);
7606
7607 opinfo_put(opinfo);
7608 ksmbd_fd_put(work, fp);
7609 smb2_set_err_rsp(work);
7610}
7611
7612static int check_lease_state(struct lease *lease, __le32 req_state)
7613{
7614 if ((lease->new_state ==
64b39f4a
NJ		 7615 (SMB2_LEASE_READ_CACHING_LE | SMB2_LEASE_HANDLE_CACHING_LE)) &&
7616 !(req_state & SMB2_LEASE_WRITE_CACHING_LE)) {
e2f34481
NJ		 7617 lease->new_state = req_state;
7618 return 0;
7619 }
7620
7621 if (lease->new_state == req_state)
7622 return 0;
7623
7624 return 1;
7625}
7626
7627/**
7628 * smb21_lease_break_ack() - handler for smb2.1 lease break command
7629 * @work: smb work containing lease break command buffer
7630 *
7631 * Return: 0
7632 */
7633static void smb21_lease_break_ack(struct ksmbd_work *work)
7634{
7635 struct ksmbd_conn *conn = work->conn;
e5066499
NJ		 7636 struct smb2_lease_ack *req = work->request_buf;
7637 struct smb2_lease_ack *rsp = work->response_buf;
e2f34481
NJ		 7638 struct oplock_info *opinfo;
7639 __le32 err = 0;
7640 int ret = 0;
7641 unsigned int lease_change_type;
7642 __le32 lease_state;
7643 struct lease *lease;
7644
7645 ksmbd_debug(OPLOCK, "smb21 lease break, lease state(0x%x)\n",
070fb21e 7646 le32_to_cpu(req->LeaseState));
e2f34481
NJ		 7647 opinfo = lookup_lease_in_table(conn, req->LeaseKey);
7648 if (!opinfo) {
7649 ksmbd_debug(OPLOCK, "file not opened\n");
7650 smb2_set_err_rsp(work);
7651 rsp->hdr.Status = STATUS_UNSUCCESSFUL;
7652 return;
7653 }
7654 lease = opinfo->o_lease;
7655
7656 if (opinfo->op_state == OPLOCK_STATE_NONE) {
bde1694a
NJ		 7657 pr_err("unexpected lease break state 0x%x\n",
7658 opinfo->op_state);
e2f34481
NJ		 7659 rsp->hdr.Status = STATUS_UNSUCCESSFUL;
7660 goto err_out;
7661 }
7662
7663 if (check_lease_state(lease, req->LeaseState)) {
7664 rsp->hdr.Status = STATUS_REQUEST_NOT_ACCEPTED;
7665 ksmbd_debug(OPLOCK,
070fb21e
NJ		 7666 "req lease state: 0x%x, expected state: 0x%x\n",
7667 req->LeaseState, lease->new_state);
e2f34481
NJ		 7668 goto err_out;
7669 }
7670
7671 if (!atomic_read(&opinfo->breaking_cnt)) {
7672 rsp->hdr.Status = STATUS_UNSUCCESSFUL;
7673 goto err_out;
7674 }
7675
7676 /* check for bad lease state */
070fb21e
NJ		 7677 if (req->LeaseState &
7678 (~(SMB2_LEASE_READ_CACHING_LE | SMB2_LEASE_HANDLE_CACHING_LE))) {
e2f34481
NJ		 7679 err = STATUS_INVALID_OPLOCK_PROTOCOL;
7680 if (lease->state & SMB2_LEASE_WRITE_CACHING_LE)
7681 lease_change_type = OPLOCK_WRITE_TO_NONE;
7682 else
7683 lease_change_type = OPLOCK_READ_TO_NONE;
7684 ksmbd_debug(OPLOCK, "handle bad lease state 0x%x -> 0x%x\n",
070fb21e
NJ		 7685 le32_to_cpu(lease->state),
7686 le32_to_cpu(req->LeaseState));
64b39f4a
NJ		 7687 } else if (lease->state == SMB2_LEASE_READ_CACHING_LE &&
7688 req->LeaseState != SMB2_LEASE_NONE_LE) {
e2f34481
NJ		 7689 err = STATUS_INVALID_OPLOCK_PROTOCOL;
7690 lease_change_type = OPLOCK_READ_TO_NONE;
7691 ksmbd_debug(OPLOCK, "handle bad lease state 0x%x -> 0x%x\n",
070fb21e
NJ		 7692 le32_to_cpu(lease->state),
7693 le32_to_cpu(req->LeaseState));
e2f34481
NJ		 7694 } else {
7695 /* valid lease state changes */
7696 err = STATUS_INVALID_DEVICE_STATE;
7697 if (req->LeaseState == SMB2_LEASE_NONE_LE) {
7698 if (lease->state & SMB2_LEASE_WRITE_CACHING_LE)
7699 lease_change_type = OPLOCK_WRITE_TO_NONE;
7700 else
7701 lease_change_type = OPLOCK_READ_TO_NONE;
7702 } else if (req->LeaseState & SMB2_LEASE_READ_CACHING_LE) {
7703 if (lease->state & SMB2_LEASE_WRITE_CACHING_LE)
7704 lease_change_type = OPLOCK_WRITE_TO_READ;
7705 else
7706 lease_change_type = OPLOCK_READ_HANDLE_TO_READ;
64b39f4a 7707 } else {
e2f34481 7708 lease_change_type = 0;
64b39f4a 7709 }
e2f34481
NJ		 7710 }
7711
7712 switch (lease_change_type) {
7713 case OPLOCK_WRITE_TO_READ:
7714 ret = opinfo_write_to_read(opinfo);
7715 break;
7716 case OPLOCK_READ_HANDLE_TO_READ:
7717 ret = opinfo_read_handle_to_read(opinfo);
7718 break;
7719 case OPLOCK_WRITE_TO_NONE:
7720 ret = opinfo_write_to_none(opinfo);
7721 break;
7722 case OPLOCK_READ_TO_NONE:
7723 ret = opinfo_read_to_none(opinfo);
7724 break;
7725 default:
7726 ksmbd_debug(OPLOCK, "unknown lease change 0x%x -> 0x%x\n",
070fb21e
NJ		 7727 le32_to_cpu(lease->state),
7728 le32_to_cpu(req->LeaseState));
e2f34481
NJ		 7729 }
7730
7731 lease_state = lease->state;
7732 opinfo->op_state = OPLOCK_STATE_NONE;
7733 wake_up_interruptible_all(&opinfo->oplock_q);
7734 atomic_dec(&opinfo->breaking_cnt);
7735 wake_up_interruptible_all(&opinfo->oplock_brk);
7736 opinfo_put(opinfo);
7737
7738 if (ret < 0) {
7739 rsp->hdr.Status = err;
7740 goto err_out;
7741 }
7742
7743 rsp->StructureSize = cpu_to_le16(36);
7744 rsp->Reserved = 0;
7745 rsp->Flags = 0;
7746 memcpy(rsp->LeaseKey, req->LeaseKey, 16);
7747 rsp->LeaseState = lease_state;
7748 rsp->LeaseDuration = 0;
7749 inc_rfc1001_len(rsp, 36);
7750 return;
7751
7752err_out:
7753 opinfo->op_state = OPLOCK_STATE_NONE;
7754 wake_up_interruptible_all(&opinfo->oplock_q);
7755 atomic_dec(&opinfo->breaking_cnt);
7756 wake_up_interruptible_all(&opinfo->oplock_brk);
7757
7758 opinfo_put(opinfo);
7759 smb2_set_err_rsp(work);
7760}
7761
7762/**
7763 * smb2_oplock_break() - dispatcher for smb2.0 and 2.1 oplock/lease break
7764 * @work: smb work containing oplock/lease break command buffer
7765 *
7766 * Return: 0
7767 */
7768int smb2_oplock_break(struct ksmbd_work *work)
7769{
e5066499
NJ		 7770 struct smb2_oplock_break *req = work->request_buf;
7771 struct smb2_oplock_break *rsp = work->response_buf;
e2f34481
NJ		 7772
7773 switch (le16_to_cpu(req->StructureSize)) {
7774 case OP_BREAK_STRUCT_SIZE_20:
7775 smb20_oplock_break_ack(work);
7776 break;
7777 case OP_BREAK_STRUCT_SIZE_21:
7778 smb21_lease_break_ack(work);
7779 break;
7780 default:
7781 ksmbd_debug(OPLOCK, "invalid break cmd %d\n",
070fb21e 7782 le16_to_cpu(req->StructureSize));
e2f34481
NJ		 7783 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
7784 smb2_set_err_rsp(work);
7785 }
7786
7787 return 0;
7788}
7789
7790/**
7791 * smb2_notify() - handler for smb2 notify request
95fa1ce9 7792 * @work: smb work containing notify command buffer
e2f34481
NJ		 7793 *
7794 * Return: 0
7795 */
7796int smb2_notify(struct ksmbd_work *work)
7797{
7798 struct smb2_notify_req *req;
7799 struct smb2_notify_rsp *rsp;
7800
7801 WORK_BUFFERS(work, req, rsp);
7802
7803 if (work->next_smb2_rcv_hdr_off && req->hdr.NextCommand) {
7804 rsp->hdr.Status = STATUS_INTERNAL_ERROR;
7805 smb2_set_err_rsp(work);
7806 return 0;
7807 }
7808
7809 smb2_set_err_rsp(work);
7810 rsp->hdr.Status = STATUS_NOT_IMPLEMENTED;
7811 return 0;
7812}
7813
7814/**
7815 * smb2_is_sign_req() - handler for checking packet signing status
95fa1ce9
HL		 7816 * @work: smb work containing notify command buffer
7817 * @command: SMB2 command id
e2f34481
NJ		 7818 *
7819 * Return: true if packed is signed, false otherwise
7820 */
7821bool smb2_is_sign_req(struct ksmbd_work *work, unsigned int command)
7822{
e5066499 7823 struct smb2_hdr *rcv_hdr2 = work->request_buf;
e2f34481
NJ		 7824
7825 if ((rcv_hdr2->Flags & SMB2_FLAGS_SIGNED) &&
64b39f4a
NJ		 7826 command != SMB2_NEGOTIATE_HE &&
7827 command != SMB2_SESSION_SETUP_HE &&
7828 command != SMB2_OPLOCK_BREAK_HE)
e2f34481
NJ		 7829 return true;
7830
5616015f 7831 return false;
e2f34481
NJ		 7832}
7833
7834/**
7835 * smb2_check_sign_req() - handler for req packet sign processing
7836 * @work: smb work containing notify command buffer
7837 *
7838 * Return: 1 on success, 0 otherwise
7839 */
7840int smb2_check_sign_req(struct ksmbd_work *work)
7841{
7842 struct smb2_hdr *hdr, *hdr_org;
7843 char signature_req[SMB2_SIGNATURE_SIZE];
7844 char signature[SMB2_HMACSHA256_SIZE];
7845 struct kvec iov[1];
7846 size_t len;
7847
e5066499 7848 hdr_org = hdr = work->request_buf;
e2f34481
NJ		 7849 if (work->next_smb2_rcv_hdr_off)
7850 hdr = REQUEST_BUF_NEXT(work);
7851
7852 if (!hdr->NextCommand && !work->next_smb2_rcv_hdr_off)
7853 len = be32_to_cpu(hdr_org->smb2_buf_length);
7854 else if (hdr->NextCommand)
7855 len = le32_to_cpu(hdr->NextCommand);
7856 else
7857 len = be32_to_cpu(hdr_org->smb2_buf_length) -
7858 work->next_smb2_rcv_hdr_off;
7859
7860 memcpy(signature_req, hdr->Signature, SMB2_SIGNATURE_SIZE);
7861 memset(hdr->Signature, 0, SMB2_SIGNATURE_SIZE);
7862
7863 iov[0].iov_base = (char *)&hdr->ProtocolId;
7864 iov[0].iov_len = len;
7865
7866 if (ksmbd_sign_smb2_pdu(work->conn, work->sess->sess_key, iov, 1,
64b39f4a 7867 signature))
e2f34481
NJ		 7868 return 0;
7869
7870 if (memcmp(signature, signature_req, SMB2_SIGNATURE_SIZE)) {
bde1694a 7871 pr_err("bad smb2 signature\n");
e2f34481
NJ		 7872 return 0;
7873 }
7874
7875 return 1;
7876}
7877
7878/**
7879 * smb2_set_sign_rsp() - handler for rsp packet sign processing
7880 * @work: smb work containing notify command buffer
7881 *
7882 */
7883void smb2_set_sign_rsp(struct ksmbd_work *work)
7884{
7885 struct smb2_hdr *hdr, *hdr_org;
7886 struct smb2_hdr *req_hdr;
7887 char signature[SMB2_HMACSHA256_SIZE];
7888 struct kvec iov[2];
7889 size_t len;
7890 int n_vec = 1;
7891
e5066499 7892 hdr_org = hdr = work->response_buf;
e2f34481
NJ		 7893 if (work->next_smb2_rsp_hdr_off)
7894 hdr = RESPONSE_BUF_NEXT(work);
7895
7896 req_hdr = REQUEST_BUF_NEXT(work);
7897
7898 if (!work->next_smb2_rsp_hdr_off) {
7899 len = get_rfc1002_len(hdr_org);
7900 if (req_hdr->NextCommand)
7901 len = ALIGN(len, 8);
7902 } else {
7903 len = get_rfc1002_len(hdr_org) - work->next_smb2_rsp_hdr_off;
7904 len = ALIGN(len, 8);
7905 }
7906
7907 if (req_hdr->NextCommand)
7908 hdr->NextCommand = cpu_to_le32(len);
7909
7910 hdr->Flags |= SMB2_FLAGS_SIGNED;
7911 memset(hdr->Signature, 0, SMB2_SIGNATURE_SIZE);
7912
7913 iov[0].iov_base = (char *)&hdr->ProtocolId;
7914 iov[0].iov_len = len;
7915
e5066499
NJ		 7916 if (work->aux_payload_sz) {
7917 iov[0].iov_len -= work->aux_payload_sz;
e2f34481 7918
e5066499
NJ		 7919 iov[1].iov_base = work->aux_payload_buf;
7920 iov[1].iov_len = work->aux_payload_sz;
e2f34481
NJ		 7921 n_vec++;
7922 }
7923
7924 if (!ksmbd_sign_smb2_pdu(work->conn, work->sess->sess_key, iov, n_vec,
64b39f4a 7925 signature))
e2f34481
NJ		 7926 memcpy(hdr->Signature, signature, SMB2_SIGNATURE_SIZE);
7927}
7928
7929/**
7930 * smb3_check_sign_req() - handler for req packet sign processing
7931 * @work: smb work containing notify command buffer
7932 *
7933 * Return: 1 on success, 0 otherwise
7934 */
7935int smb3_check_sign_req(struct ksmbd_work *work)
7936{
f5a544e3 7937 struct ksmbd_conn *conn = work->conn;
e2f34481
NJ		 7938 char *signing_key;
7939 struct smb2_hdr *hdr, *hdr_org;
7940 struct channel *chann;
7941 char signature_req[SMB2_SIGNATURE_SIZE];
7942 char signature[SMB2_CMACAES_SIZE];
7943 struct kvec iov[1];
7944 size_t len;
7945
e5066499 7946 hdr_org = hdr = work->request_buf;
e2f34481
NJ		 7947 if (work->next_smb2_rcv_hdr_off)
7948 hdr = REQUEST_BUF_NEXT(work);
7949
7950 if (!hdr->NextCommand && !work->next_smb2_rcv_hdr_off)
7951 len = be32_to_cpu(hdr_org->smb2_buf_length);
7952 else if (hdr->NextCommand)
7953 len = le32_to_cpu(hdr->NextCommand);
7954 else
7955 len = be32_to_cpu(hdr_org->smb2_buf_length) -
7956 work->next_smb2_rcv_hdr_off;
7957
7958 if (le16_to_cpu(hdr->Command) == SMB2_SESSION_SETUP_HE) {
7959 signing_key = work->sess->smb3signingkey;
e2f34481 7960 } else {
f5a544e3 7961 chann = lookup_chann_list(work->sess, conn);
e2f34481
NJ		 7962 if (!chann)
7963 return 0;
7964 signing_key = chann->smb3signingkey;
e2f34481
NJ		 7965 }
7966
7967 if (!signing_key) {
bde1694a 7968 pr_err("SMB3 signing key is not generated\n");
e2f34481
NJ		 7969 return 0;
7970 }
7971
7972 memcpy(signature_req, hdr->Signature, SMB2_SIGNATURE_SIZE);
7973 memset(hdr->Signature, 0, SMB2_SIGNATURE_SIZE);
7974 iov[0].iov_base = (char *)&hdr->ProtocolId;
7975 iov[0].iov_len = len;
7976
7977 if (ksmbd_sign_smb3_pdu(conn, signing_key, iov, 1, signature))
7978 return 0;
7979
7980 if (memcmp(signature, signature_req, SMB2_SIGNATURE_SIZE)) {
bde1694a 7981 pr_err("bad smb2 signature\n");
e2f34481
NJ		 7982 return 0;
7983 }
7984
7985 return 1;
7986}
7987
7988/**
7989 * smb3_set_sign_rsp() - handler for rsp packet sign processing
7990 * @work: smb work containing notify command buffer
7991 *
7992 */
7993void smb3_set_sign_rsp(struct ksmbd_work *work)
7994{
f5a544e3 7995 struct ksmbd_conn *conn = work->conn;
e2f34481
NJ		 7996 struct smb2_hdr *req_hdr;
7997 struct smb2_hdr *hdr, *hdr_org;
7998 struct channel *chann;
7999 char signature[SMB2_CMACAES_SIZE];
8000 struct kvec iov[2];
8001 int n_vec = 1;
8002 size_t len;
8003 char *signing_key;
8004
e5066499 8005 hdr_org = hdr = work->response_buf;
e2f34481
NJ		 8006 if (work->next_smb2_rsp_hdr_off)
8007 hdr = RESPONSE_BUF_NEXT(work);
8008
8009 req_hdr = REQUEST_BUF_NEXT(work);
8010
8011 if (!work->next_smb2_rsp_hdr_off) {
8012 len = get_rfc1002_len(hdr_org);
8013 if (req_hdr->NextCommand)
8014 len = ALIGN(len, 8);
8015 } else {
8016 len = get_rfc1002_len(hdr_org) - work->next_smb2_rsp_hdr_off;
8017 len = ALIGN(len, 8);
8018 }
8019
8020 if (le16_to_cpu(hdr->Command) == SMB2_SESSION_SETUP_HE) {
8021 signing_key = work->sess->smb3signingkey;
e2f34481 8022 } else {
f5a544e3 8023 chann = lookup_chann_list(work->sess, work->conn);
e2f34481
NJ		 8024 if (!chann)
8025 return;
8026 signing_key = chann->smb3signingkey;
e2f34481
NJ		 8027 }
8028
8029 if (!signing_key)
8030 return;
8031
8032 if (req_hdr->NextCommand)
8033 hdr->NextCommand = cpu_to_le32(len);
8034
8035 hdr->Flags |= SMB2_FLAGS_SIGNED;
8036 memset(hdr->Signature, 0, SMB2_SIGNATURE_SIZE);
8037 iov[0].iov_base = (char *)&hdr->ProtocolId;
8038 iov[0].iov_len = len;
e5066499
NJ		 8039 if (work->aux_payload_sz) {
8040 iov[0].iov_len -= work->aux_payload_sz;
8041 iov[1].iov_base = work->aux_payload_buf;
8042 iov[1].iov_len = work->aux_payload_sz;
e2f34481
NJ		 8043 n_vec++;
8044 }
8045
8046 if (!ksmbd_sign_smb3_pdu(conn, signing_key, iov, n_vec, signature))
8047 memcpy(hdr->Signature, signature, SMB2_SIGNATURE_SIZE);
8048}
8049
8050/**
8051 * smb3_preauth_hash_rsp() - handler for computing preauth hash on response
8052 * @work: smb work containing response buffer
8053 *
8054 */
8055void smb3_preauth_hash_rsp(struct ksmbd_work *work)
8056{
8057 struct ksmbd_conn *conn = work->conn;
8058 struct ksmbd_session *sess = work->sess;
8059 struct smb2_hdr *req, *rsp;
8060
8061 if (conn->dialect != SMB311_PROT_ID)
8062 return;
8063
8064 WORK_BUFFERS(work, req, rsp);
8065
8066 if (le16_to_cpu(req->Command) == SMB2_NEGOTIATE_HE)
8067 ksmbd_gen_preauth_integrity_hash(conn, (char *)rsp,
070fb21e 8068 conn->preauth_info->Preauth_HashValue);
e2f34481 8069
f5a544e3 8070 if (le16_to_cpu(rsp->Command) == SMB2_SESSION_SETUP_HE && sess) {
e2f34481
NJ		 8071 __u8 *hash_value;
8072
f5a544e3
NJ		 8073 if (conn->binding) {
8074 struct preauth_session *preauth_sess;
8075
8076 preauth_sess = ksmbd_preauth_session_lookup(conn, sess->id);
8077 if (!preauth_sess)
8078 return;
8079 hash_value = preauth_sess->Preauth_HashValue;
8080 } else {
8081 hash_value = sess->Preauth_HashValue;
8082 if (!hash_value)
8083 return;
8084 }
e2f34481 8085 ksmbd_gen_preauth_integrity_hash(conn, (char *)rsp,
070fb21e 8086 hash_value);
e2f34481
NJ		 8087 }
8088}
8089
64b39f4a 8090static void fill_transform_hdr(struct smb2_transform_hdr *tr_hdr, char *old_buf,
070fb21e 8091 __le16 cipher_type)
e2f34481
NJ		 8092{
8093 struct smb2_hdr *hdr = (struct smb2_hdr *)old_buf;
8094 unsigned int orig_len = get_rfc1002_len(old_buf);
8095
8096 memset(tr_hdr, 0, sizeof(struct smb2_transform_hdr));
8097 tr_hdr->ProtocolId = SMB2_TRANSFORM_PROTO_NUM;
8098 tr_hdr->OriginalMessageSize = cpu_to_le32(orig_len);
8099 tr_hdr->Flags = cpu_to_le16(0x01);
5a0ca770
NJ		 8100 if (cipher_type == SMB2_ENCRYPTION_AES128_GCM ||
8101 cipher_type == SMB2_ENCRYPTION_AES256_GCM)
8102 get_random_bytes(&tr_hdr->Nonce, SMB3_AES_GCM_NONCE);
e2f34481 8103 else
5a0ca770 8104 get_random_bytes(&tr_hdr->Nonce, SMB3_AES_CCM_NONCE);
e2f34481
NJ		 8105 memcpy(&tr_hdr->SessionId, &hdr->SessionId, 8);
8106 inc_rfc1001_len(tr_hdr, sizeof(struct smb2_transform_hdr) - 4);
8107 inc_rfc1001_len(tr_hdr, orig_len);
8108}
8109
8110int smb3_encrypt_resp(struct ksmbd_work *work)
8111{
e5066499 8112 char *buf = work->response_buf;
e2f34481
NJ		 8113 struct smb2_transform_hdr *tr_hdr;
8114 struct kvec iov[3];
8115 int rc = -ENOMEM;
e5066499 8116 int buf_size = 0, rq_nvec = 2 + (work->aux_payload_sz ? 1 : 0);
e2f34481
NJ		 8117
8118 if (ARRAY_SIZE(iov) < rq_nvec)
8119 return -ENOMEM;
8120
20ea7fd2 8121 tr_hdr = kzalloc(sizeof(struct smb2_transform_hdr), GFP_KERNEL);
e2f34481
NJ		 8122 if (!tr_hdr)
8123 return rc;
8124
8125 /* fill transform header */
8126 fill_transform_hdr(tr_hdr, buf, work->conn->cipher_type);
8127
8128 iov[0].iov_base = tr_hdr;
8129 iov[0].iov_len = sizeof(struct smb2_transform_hdr);
8130 buf_size += iov[0].iov_len - 4;
8131
8132 iov[1].iov_base = buf + 4;
8133 iov[1].iov_len = get_rfc1002_len(buf);
e5066499
NJ		 8134 if (work->aux_payload_sz) {
8135 iov[1].iov_len = work->resp_hdr_sz - 4;
e2f34481 8136
e5066499
NJ		 8137 iov[2].iov_base = work->aux_payload_buf;
8138 iov[2].iov_len = work->aux_payload_sz;
e2f34481
NJ		 8139 buf_size += iov[2].iov_len;
8140 }
8141 buf_size += iov[1].iov_len;
8142 work->resp_hdr_sz = iov[1].iov_len;
8143
8144 rc = ksmbd_crypt_message(work->conn, iov, rq_nvec, 1);
8145 if (rc)
8146 return rc;
8147
8148 memmove(buf, iov[1].iov_base, iov[1].iov_len);
8149 tr_hdr->smb2_buf_length = cpu_to_be32(buf_size);
8150 work->tr_buf = tr_hdr;
8151
8152 return rc;
8153}
8154
8155int smb3_is_transform_hdr(void *buf)
8156{
8157 struct smb2_transform_hdr *trhdr = buf;
8158
8159 return trhdr->ProtocolId == SMB2_TRANSFORM_PROTO_NUM;
8160}
8161
8162int smb3_decrypt_req(struct ksmbd_work *work)
8163{
8164 struct ksmbd_conn *conn = work->conn;
8165 struct ksmbd_session *sess;
e5066499 8166 char *buf = work->request_buf;
e2f34481
NJ		 8167 struct smb2_hdr *hdr;
8168 unsigned int pdu_length = get_rfc1002_len(buf);
8169 struct kvec iov[2];
8170 unsigned int buf_data_size = pdu_length + 4 -
8171 sizeof(struct smb2_transform_hdr);
8172 struct smb2_transform_hdr *tr_hdr = (struct smb2_transform_hdr *)buf;
8173 unsigned int orig_len = le32_to_cpu(tr_hdr->OriginalMessageSize);
8174 int rc = 0;
8175
f5a544e3 8176 sess = ksmbd_session_lookup_all(conn, le64_to_cpu(tr_hdr->SessionId));
e2f34481 8177 if (!sess) {
bde1694a
NJ		 8178 pr_err("invalid session id(%llx) in transform header\n",
8179 le64_to_cpu(tr_hdr->SessionId));
e2f34481
NJ		 8180 return -ECONNABORTED;
8181 }
8182
070fb21e
NJ		 8183 if (pdu_length + 4 <
8184 sizeof(struct smb2_transform_hdr) + sizeof(struct smb2_hdr)) {
bde1694a
NJ		 8185 pr_err("Transform message is too small (%u)\n",
8186 pdu_length);
e2f34481
NJ		 8187 return -ECONNABORTED;
8188 }
8189
8190 if (pdu_length + 4 < orig_len + sizeof(struct smb2_transform_hdr)) {
bde1694a 8191 pr_err("Transform message is broken\n");
e2f34481
NJ		 8192 return -ECONNABORTED;
8193 }
8194
8195 iov[0].iov_base = buf;
8196 iov[0].iov_len = sizeof(struct smb2_transform_hdr);
8197 iov[1].iov_base = buf + sizeof(struct smb2_transform_hdr);
8198 iov[1].iov_len = buf_data_size;
8199 rc = ksmbd_crypt_message(conn, iov, 2, 0);
8200 if (rc)
8201 return rc;
8202
8203 memmove(buf + 4, iov[1].iov_base, buf_data_size);
8204 hdr = (struct smb2_hdr *)buf;
8205 hdr->smb2_buf_length = cpu_to_be32(buf_data_size);
8206
8207 return rc;
8208}
8209
8210bool smb3_11_final_sess_setup_resp(struct ksmbd_work *work)
8211{
8212 struct ksmbd_conn *conn = work->conn;
e5066499 8213 struct smb2_hdr *rsp = work->response_buf;
e2f34481
NJ		 8214
8215 if (conn->dialect < SMB30_PROT_ID)
8216 return false;
8217
8218 if (work->next_smb2_rcv_hdr_off)
8219 rsp = RESPONSE_BUF_NEXT(work);
8220
8221 if (le16_to_cpu(rsp->Command) == SMB2_SESSION_SETUP_HE &&
64b39f4a 8222 rsp->Status == STATUS_SUCCESS)
e2f34481
NJ		 8223 return true;
8224 return false;
8225}
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