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ksmbd: validate compound response buffer
[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"
03d8d4f1 25#include "transport_rdma.h"
e2f34481
NJ		 26#include "vfs.h"
27#include "vfs_cache.h"
28#include "misc.h"
29
e2f34481
NJ		 30#include "server.h"
31#include "smb_common.h"
32#include "smbstatus.h"
33#include "ksmbd_work.h"
34#include "mgmt/user_config.h"
35#include "mgmt/share_config.h"
36#include "mgmt/tree_connect.h"
37#include "mgmt/user_session.h"
38#include "mgmt/ksmbd_ida.h"
39#include "ndr.h"
40
41static void __wbuf(struct ksmbd_work *work, void **req, void **rsp)
42{
43 if (work->next_smb2_rcv_hdr_off) {
8a893315
NJ		 44 *req = ksmbd_req_buf_next(work);
45 *rsp = ksmbd_resp_buf_next(work);
e2f34481 46 } else {
e5066499
NJ		 47 *req = work->request_buf;
48 *rsp = work->response_buf;
e2f34481
NJ		 49 }
50}
51
52#define WORK_BUFFERS(w, rq, rs) __wbuf((w), (void **)&(rq), (void **)&(rs))
53
54/**
55 * check_session_id() - check for valid session id in smb header
56 * @conn: connection instance
57 * @id: session id from smb header
58 *
59 * Return: 1 if valid session id, otherwise 0
60 */
f4228b67 61static inline bool check_session_id(struct ksmbd_conn *conn, u64 id)
e2f34481
NJ		 62{
63 struct ksmbd_session *sess;
64
65 if (id == 0 || id == -1)
f4228b67 66 return false;
e2f34481 67
f5a544e3 68 sess = ksmbd_session_lookup_all(conn, id);
e2f34481 69 if (sess)
f4228b67 70 return true;
bde1694a 71 pr_err("Invalid user session id: %llu\n", id);
f4228b67 72 return false;
e2f34481
NJ		 73}
74
f5a544e3 75struct channel *lookup_chann_list(struct ksmbd_session *sess, struct ksmbd_conn *conn)
e2f34481
NJ		 76{
77 struct channel *chann;
e2f34481 78
6f3d5eee 79 list_for_each_entry(chann, &sess->ksmbd_chann_list, chann_list) {
560ac051 80 if (chann->conn == conn)
e2f34481
NJ		 81 return chann;
82 }
83
84 return NULL;
85}
86
87/**
5ec3df8e 88 * smb2_get_ksmbd_tcon() - get tree connection information using a tree id.
95fa1ce9 89 * @work: smb work
e2f34481 90 *
5ec3df8e
NJ		 91 * Return: 0 if there is a tree connection matched or these are
92 * skipable commands, otherwise error
e2f34481
NJ		 93 */
94int smb2_get_ksmbd_tcon(struct ksmbd_work *work)
95{
e5066499 96 struct smb2_hdr *req_hdr = work->request_buf;
e2f34481
NJ		 97 int tree_id;
98
99 work->tcon = NULL;
64b39f4a
NJ		 100 if (work->conn->ops->get_cmd_val(work) == SMB2_TREE_CONNECT_HE ||
101 work->conn->ops->get_cmd_val(work) == SMB2_CANCEL_HE ||
102 work->conn->ops->get_cmd_val(work) == SMB2_LOGOFF_HE) {
e2f34481
NJ		 103 ksmbd_debug(SMB, "skip to check tree connect request\n");
104 return 0;
105 }
106
02b68b20 107 if (xa_empty(&work->sess->tree_conns)) {
e2f34481 108 ksmbd_debug(SMB, "NO tree connected\n");
c6ce2b57 109 return -ENOENT;
e2f34481
NJ		 110 }
111
112 tree_id = le32_to_cpu(req_hdr->Id.SyncId.TreeId);
113 work->tcon = ksmbd_tree_conn_lookup(work->sess, tree_id);
114 if (!work->tcon) {
bde1694a 115 pr_err("Invalid tid %d\n", tree_id);
c6ce2b57 116 return -EINVAL;
e2f34481
NJ		 117 }
118
119 return 1;
120}
121
122/**
123 * smb2_set_err_rsp() - set error response code on smb response
124 * @work: smb work containing response buffer
125 */
126void smb2_set_err_rsp(struct ksmbd_work *work)
127{
128 struct smb2_err_rsp *err_rsp;
129
130 if (work->next_smb2_rcv_hdr_off)
8a893315 131 err_rsp = ksmbd_resp_buf_next(work);
e2f34481 132 else
e5066499 133 err_rsp = work->response_buf;
e2f34481
NJ		 134
135 if (err_rsp->hdr.Status != STATUS_STOPPED_ON_SYMLINK) {
136 err_rsp->StructureSize = SMB2_ERROR_STRUCTURE_SIZE2_LE;
137 err_rsp->ErrorContextCount = 0;
138 err_rsp->Reserved = 0;
139 err_rsp->ByteCount = 0;
140 err_rsp->ErrorData[0] = 0;
e5066499 141 inc_rfc1001_len(work->response_buf, SMB2_ERROR_STRUCTURE_SIZE2);
e2f34481
NJ		 142 }
143}
144
145/**
146 * is_smb2_neg_cmd() - is it smb2 negotiation command
147 * @work: smb work containing smb header
148 *
f4228b67 149 * Return: true if smb2 negotiation command, otherwise false
e2f34481 150 */
f4228b67 151bool is_smb2_neg_cmd(struct ksmbd_work *work)
e2f34481 152{
e5066499 153 struct smb2_hdr *hdr = work->request_buf;
e2f34481
NJ		 154
155 /* is it SMB2 header ? */
156 if (hdr->ProtocolId != SMB2_PROTO_NUMBER)
f4228b67 157 return false;
e2f34481
NJ		 158
159 /* make sure it is request not response message */
160 if (hdr->Flags & SMB2_FLAGS_SERVER_TO_REDIR)
f4228b67 161 return false;
e2f34481
NJ		 162
163 if (hdr->Command != SMB2_NEGOTIATE)
f4228b67 164 return false;
e2f34481 165
f4228b67 166 return true;
e2f34481
NJ		 167}
168
169/**
170 * is_smb2_rsp() - is it smb2 response
171 * @work: smb work containing smb response buffer
172 *
f4228b67 173 * Return: true if smb2 response, otherwise false
e2f34481 174 */
f4228b67 175bool is_smb2_rsp(struct ksmbd_work *work)
e2f34481 176{
e5066499 177 struct smb2_hdr *hdr = work->response_buf;
e2f34481
NJ		 178
179 /* is it SMB2 header ? */
180 if (hdr->ProtocolId != SMB2_PROTO_NUMBER)
f4228b67 181 return false;
e2f34481
NJ		 182
183 /* make sure it is response not request message */
184 if (!(hdr->Flags & SMB2_FLAGS_SERVER_TO_REDIR))
f4228b67 185 return false;
e2f34481 186
f4228b67 187 return true;
e2f34481
NJ		 188}
189
190/**
191 * get_smb2_cmd_val() - get smb command code from smb header
192 * @work: smb work containing smb request buffer
193 *
194 * Return: smb2 request command value
195 */
fc2d1b58 196u16 get_smb2_cmd_val(struct ksmbd_work *work)
e2f34481
NJ		 197{
198 struct smb2_hdr *rcv_hdr;
199
200 if (work->next_smb2_rcv_hdr_off)
8a893315 201 rcv_hdr = ksmbd_req_buf_next(work);
e2f34481 202 else
e5066499 203 rcv_hdr = work->request_buf;
e2f34481
NJ		 204 return le16_to_cpu(rcv_hdr->Command);
205}
206
207/**
208 * set_smb2_rsp_status() - set error response code on smb2 header
209 * @work: smb work containing response buffer
95fa1ce9 210 * @err: error response code
e2f34481
NJ		 211 */
212void set_smb2_rsp_status(struct ksmbd_work *work, __le32 err)
213{
214 struct smb2_hdr *rsp_hdr;
215
216 if (work->next_smb2_rcv_hdr_off)
8a893315 217 rsp_hdr = ksmbd_resp_buf_next(work);
e2f34481 218 else
e5066499 219 rsp_hdr = work->response_buf;
e2f34481
NJ		 220 rsp_hdr->Status = err;
221 smb2_set_err_rsp(work);
222}
223
224/**
225 * init_smb2_neg_rsp() - initialize smb2 response for negotiate command
226 * @work: smb work containing smb request buffer
227 *
228 * smb2 negotiate response is sent in reply of smb1 negotiate command for
229 * dialect auto-negotiation.
230 */
231int init_smb2_neg_rsp(struct ksmbd_work *work)
232{
233 struct smb2_hdr *rsp_hdr;
234 struct smb2_negotiate_rsp *rsp;
235 struct ksmbd_conn *conn = work->conn;
236
237 if (conn->need_neg == false)
238 return -EINVAL;
e2f34481 239
e5066499 240 rsp_hdr = work->response_buf;
e2f34481
NJ		 241
242 memset(rsp_hdr, 0, sizeof(struct smb2_hdr) + 2);
243
244 rsp_hdr->smb2_buf_length =
d8fb2998 245 cpu_to_be32(smb2_hdr_size_no_buflen(conn->vals));
e2f34481
NJ		 246
247 rsp_hdr->ProtocolId = SMB2_PROTO_NUMBER;
248 rsp_hdr->StructureSize = SMB2_HEADER_STRUCTURE_SIZE;
249 rsp_hdr->CreditRequest = cpu_to_le16(2);
250 rsp_hdr->Command = SMB2_NEGOTIATE;
251 rsp_hdr->Flags = (SMB2_FLAGS_SERVER_TO_REDIR);
252 rsp_hdr->NextCommand = 0;
253 rsp_hdr->MessageId = 0;
254 rsp_hdr->Id.SyncId.ProcessId = 0;
255 rsp_hdr->Id.SyncId.TreeId = 0;
256 rsp_hdr->SessionId = 0;
257 memset(rsp_hdr->Signature, 0, 16);
258
e5066499 259 rsp = work->response_buf;
e2f34481
NJ		 260
261 WARN_ON(ksmbd_conn_good(work));
262
263 rsp->StructureSize = cpu_to_le16(65);
264 ksmbd_debug(SMB, "conn->dialect 0x%x\n", conn->dialect);
265 rsp->DialectRevision = cpu_to_le16(conn->dialect);
266 /* Not setting conn guid rsp->ServerGUID, as it
267 * not used by client for identifying connection
268 */
269 rsp->Capabilities = cpu_to_le32(conn->vals->capabilities);
270 /* Default Max Message Size till SMB2.0, 64K*/
271 rsp->MaxTransactSize = cpu_to_le32(conn->vals->max_trans_size);
272 rsp->MaxReadSize = cpu_to_le32(conn->vals->max_read_size);
273 rsp->MaxWriteSize = cpu_to_le32(conn->vals->max_write_size);
274
275 rsp->SystemTime = cpu_to_le64(ksmbd_systime());
276 rsp->ServerStartTime = 0;
277
278 rsp->SecurityBufferOffset = cpu_to_le16(128);
279 rsp->SecurityBufferLength = cpu_to_le16(AUTH_GSS_LENGTH);
280 ksmbd_copy_gss_neg_header(((char *)(&rsp->hdr) +
281 sizeof(rsp->hdr.smb2_buf_length)) +
282 le16_to_cpu(rsp->SecurityBufferOffset));
283 inc_rfc1001_len(rsp, sizeof(struct smb2_negotiate_rsp) -
284 sizeof(struct smb2_hdr) - sizeof(rsp->Buffer) +
285 AUTH_GSS_LENGTH);
286 rsp->SecurityMode = SMB2_NEGOTIATE_SIGNING_ENABLED_LE;
287 if (server_conf.signing == KSMBD_CONFIG_OPT_MANDATORY)
288 rsp->SecurityMode |= SMB2_NEGOTIATE_SIGNING_REQUIRED_LE;
289 conn->use_spnego = true;
290
291 ksmbd_conn_set_need_negotiate(work);
292 return 0;
293}
294
e2f34481
NJ		 295/**
296 * smb2_set_rsp_credits() - set number of credits in response buffer
297 * @work: smb work containing smb response buffer
298 */
299int smb2_set_rsp_credits(struct ksmbd_work *work)
300{
8a893315
NJ		 301 struct smb2_hdr *req_hdr = ksmbd_req_buf_next(work);
302 struct smb2_hdr *hdr = ksmbd_resp_buf_next(work);
e2f34481 303 struct ksmbd_conn *conn = work->conn;
bf8acc9e
HL		 304 unsigned short credits_requested;
305 unsigned short credit_charge, credits_granted = 0;
306 unsigned short aux_max, aux_credits;
e2f34481 307
bf8acc9e
HL		 308 if (work->send_no_response)
309 return 0;
e2f34481 310
bf8acc9e 311 hdr->CreditCharge = req_hdr->CreditCharge;
e2f34481 312
bf8acc9e
HL		 313 if (conn->total_credits > conn->max_credits) {
314 hdr->CreditRequest = 0;
bde1694a 315 pr_err("Total credits overflow: %d\n", conn->total_credits);
bf8acc9e 316 return -EINVAL;
e2f34481
NJ		 317 }
318
bf8acc9e
HL		 319 credit_charge = max_t(unsigned short,
320 le16_to_cpu(req_hdr->CreditCharge), 1);
321 credits_requested = max_t(unsigned short,
322 le16_to_cpu(req_hdr->CreditRequest), 1);
e2f34481 323
bf8acc9e
HL		 324 /* according to smb2.credits smbtorture, Windows server
325 * 2016 or later grant up to 8192 credits at once.
326 *
327 * TODO: Need to adjuct CreditRequest value according to
328 * current cpu load
329 */
330 aux_credits = credits_requested - 1;
331 if (hdr->Command == SMB2_NEGOTIATE)
332 aux_max = 0;
333 else
334 aux_max = conn->max_credits - credit_charge;
335 aux_credits = min_t(unsigned short, aux_credits, aux_max);
336 credits_granted = credit_charge + aux_credits;
337
338 if (conn->max_credits - conn->total_credits < credits_granted)
339 credits_granted = conn->max_credits -
340 conn->total_credits;
e2f34481
NJ		 341
342 conn->total_credits += credits_granted;
343 work->credits_granted += credits_granted;
344
345 if (!req_hdr->NextCommand) {
346 /* Update CreditRequest in last request */
347 hdr->CreditRequest = cpu_to_le16(work->credits_granted);
348 }
e2f34481 349 ksmbd_debug(SMB,
070fb21e
NJ		 350 "credits: requested[%d] granted[%d] total_granted[%d]\n",
351 credits_requested, credits_granted,
352 conn->total_credits);
e2f34481
NJ		 353 return 0;
354}
355
356/**
357 * init_chained_smb2_rsp() - initialize smb2 chained response
358 * @work: smb work containing smb response buffer
359 */
360static void init_chained_smb2_rsp(struct ksmbd_work *work)
361{
8a893315
NJ		 362 struct smb2_hdr *req = ksmbd_req_buf_next(work);
363 struct smb2_hdr *rsp = ksmbd_resp_buf_next(work);
e2f34481
NJ		 364 struct smb2_hdr *rsp_hdr;
365 struct smb2_hdr *rcv_hdr;
366 int next_hdr_offset = 0;
367 int len, new_len;
368
369 /* Len of this response = updated RFC len - offset of previous cmd
370 * in the compound rsp
371 */
372
373 /* Storing the current local FID which may be needed by subsequent
374 * command in the compound request
375 */
376 if (req->Command == SMB2_CREATE && rsp->Status == STATUS_SUCCESS) {
377 work->compound_fid =
378 le64_to_cpu(((struct smb2_create_rsp *)rsp)->
379 VolatileFileId);
380 work->compound_pfid =
381 le64_to_cpu(((struct smb2_create_rsp *)rsp)->
382 PersistentFileId);
383 work->compound_sid = le64_to_cpu(rsp->SessionId);
384 }
385
e5066499 386 len = get_rfc1002_len(work->response_buf) - work->next_smb2_rsp_hdr_off;
e2f34481
NJ		 387 next_hdr_offset = le32_to_cpu(req->NextCommand);
388
389 new_len = ALIGN(len, 8);
e5066499 390 inc_rfc1001_len(work->response_buf, ((sizeof(struct smb2_hdr) - 4)
e2f34481
NJ		 391 + new_len - len));
392 rsp->NextCommand = cpu_to_le32(new_len);
393
394 work->next_smb2_rcv_hdr_off += next_hdr_offset;
395 work->next_smb2_rsp_hdr_off += new_len;
396 ksmbd_debug(SMB,
070fb21e
NJ		 397 "Compound req new_len = %d rcv off = %d rsp off = %d\n",
398 new_len, work->next_smb2_rcv_hdr_off,
399 work->next_smb2_rsp_hdr_off);
e2f34481 400
8a893315
NJ		 401 rsp_hdr = ksmbd_resp_buf_next(work);
402 rcv_hdr = ksmbd_req_buf_next(work);
e2f34481
NJ		 403
404 if (!(rcv_hdr->Flags & SMB2_FLAGS_RELATED_OPERATIONS)) {
405 ksmbd_debug(SMB, "related flag should be set\n");
406 work->compound_fid = KSMBD_NO_FID;
407 work->compound_pfid = KSMBD_NO_FID;
408 }
409 memset((char *)rsp_hdr + 4, 0, sizeof(struct smb2_hdr) + 2);
18a015bc 410 rsp_hdr->ProtocolId = SMB2_PROTO_NUMBER;
e2f34481
NJ		 411 rsp_hdr->StructureSize = SMB2_HEADER_STRUCTURE_SIZE;
412 rsp_hdr->Command = rcv_hdr->Command;
413
414 /*
415 * Message is response. We don't grant oplock yet.
416 */
417 rsp_hdr->Flags = (SMB2_FLAGS_SERVER_TO_REDIR |
418 SMB2_FLAGS_RELATED_OPERATIONS);
419 rsp_hdr->NextCommand = 0;
420 rsp_hdr->MessageId = rcv_hdr->MessageId;
421 rsp_hdr->Id.SyncId.ProcessId = rcv_hdr->Id.SyncId.ProcessId;
422 rsp_hdr->Id.SyncId.TreeId = rcv_hdr->Id.SyncId.TreeId;
423 rsp_hdr->SessionId = rcv_hdr->SessionId;
424 memcpy(rsp_hdr->Signature, rcv_hdr->Signature, 16);
425}
426
427/**
428 * is_chained_smb2_message() - check for chained command
429 * @work: smb work containing smb request buffer
430 *
431 * Return: true if chained request, otherwise false
432 */
433bool is_chained_smb2_message(struct ksmbd_work *work)
434{
e5066499 435 struct smb2_hdr *hdr = work->request_buf;
d72a9c15 436 unsigned int len, next_cmd;
e2f34481
NJ		 437
438 if (hdr->ProtocolId != SMB2_PROTO_NUMBER)
439 return false;
440
8a893315 441 hdr = ksmbd_req_buf_next(work);
d72a9c15
NJ		 442 next_cmd = le32_to_cpu(hdr->NextCommand);
443 if (next_cmd > 0) {
444 if ((u64)work->next_smb2_rcv_hdr_off + next_cmd +
445 __SMB2_HEADER_STRUCTURE_SIZE >
446 get_rfc1002_len(work->request_buf)) {
447 pr_err("next command(%u) offset exceeds smb msg size\n",
448 next_cmd);
449 return false;
450 }
451
dbad6300
NJ		 452 if ((u64)get_rfc1002_len(work->response_buf) + MAX_CIFS_SMALL_BUFFER_SIZE >
453 work->response_sz) {
454 pr_err("next response offset exceeds response buffer size\n");
455 return false;
456 }
457
e2f34481
NJ		 458 ksmbd_debug(SMB, "got SMB2 chained command\n");
459 init_chained_smb2_rsp(work);
460 return true;
461 } else if (work->next_smb2_rcv_hdr_off) {
462 /*
463 * This is last request in chained command,
464 * align response to 8 byte
465 */
e5066499
NJ		 466 len = ALIGN(get_rfc1002_len(work->response_buf), 8);
467 len = len - get_rfc1002_len(work->response_buf);
e2f34481
NJ		 468 if (len) {
469 ksmbd_debug(SMB, "padding len %u\n", len);
e5066499
NJ		 470 inc_rfc1001_len(work->response_buf, len);
471 if (work->aux_payload_sz)
e2f34481
NJ		 472 work->aux_payload_sz += len;
473 }
474 }
475 return false;
476}
477
478/**
479 * init_smb2_rsp_hdr() - initialize smb2 response
480 * @work: smb work containing smb request buffer
481 *
482 * Return: 0
483 */
484int init_smb2_rsp_hdr(struct ksmbd_work *work)
485{
e5066499
NJ		 486 struct smb2_hdr *rsp_hdr = work->response_buf;
487 struct smb2_hdr *rcv_hdr = work->request_buf;
e2f34481
NJ		 488 struct ksmbd_conn *conn = work->conn;
489
490 memset(rsp_hdr, 0, sizeof(struct smb2_hdr) + 2);
d8fb2998
HL		 491 rsp_hdr->smb2_buf_length =
492 cpu_to_be32(smb2_hdr_size_no_buflen(conn->vals));
e2f34481
NJ		 493 rsp_hdr->ProtocolId = rcv_hdr->ProtocolId;
494 rsp_hdr->StructureSize = SMB2_HEADER_STRUCTURE_SIZE;
495 rsp_hdr->Command = rcv_hdr->Command;
496
497 /*
498 * Message is response. We don't grant oplock yet.
499 */
500 rsp_hdr->Flags = (SMB2_FLAGS_SERVER_TO_REDIR);
501 rsp_hdr->NextCommand = 0;
502 rsp_hdr->MessageId = rcv_hdr->MessageId;
503 rsp_hdr->Id.SyncId.ProcessId = rcv_hdr->Id.SyncId.ProcessId;
504 rsp_hdr->Id.SyncId.TreeId = rcv_hdr->Id.SyncId.TreeId;
505 rsp_hdr->SessionId = rcv_hdr->SessionId;
506 memcpy(rsp_hdr->Signature, rcv_hdr->Signature, 16);
507
508 work->syncronous = true;
509 if (work->async_id) {
d40012a8 510 ksmbd_release_id(&conn->async_ida, work->async_id);
e2f34481
NJ		 511 work->async_id = 0;
512 }
513
514 return 0;
515}
516
517/**
518 * smb2_allocate_rsp_buf() - allocate smb2 response buffer
519 * @work: smb work containing smb request buffer
520 *
521 * Return: 0 on success, otherwise -ENOMEM
522 */
523int smb2_allocate_rsp_buf(struct ksmbd_work *work)
524{
e5066499 525 struct smb2_hdr *hdr = work->request_buf;
e2f34481
NJ		 526 size_t small_sz = MAX_CIFS_SMALL_BUFFER_SIZE;
527 size_t large_sz = work->conn->vals->max_trans_size + MAX_SMB2_HDR_SIZE;
528 size_t sz = small_sz;
529 int cmd = le16_to_cpu(hdr->Command);
530
c30f4eb8 531 if (cmd == SMB2_IOCTL_HE || cmd == SMB2_QUERY_DIRECTORY_HE)
e2f34481 532 sz = large_sz;
e2f34481
NJ		 533
534 if (cmd == SMB2_QUERY_INFO_HE) {
535 struct smb2_query_info_req *req;
536
e5066499 537 req = work->request_buf;
e2f34481 538 if (req->InfoType == SMB2_O_INFO_FILE &&
64b39f4a 539 (req->FileInfoClass == FILE_FULL_EA_INFORMATION ||
c30f4eb8 540 req->FileInfoClass == FILE_ALL_INFORMATION))
e2f34481 541 sz = large_sz;
e2f34481
NJ		 542 }
543
544 /* allocate large response buf for chained commands */
545 if (le32_to_cpu(hdr->NextCommand) > 0)
546 sz = large_sz;
547
c30f4eb8 548 work->response_buf = kvmalloc(sz, GFP_KERNEL | __GFP_ZERO);
63c454f8 549 if (!work->response_buf)
e2f34481 550 return -ENOMEM;
e2f34481
NJ		 551
552 work->response_sz = sz;
553 return 0;
554}
555
556/**
557 * smb2_check_user_session() - check for valid session for a user
558 * @work: smb work containing smb request buffer
559 *
560 * Return: 0 on success, otherwise error
561 */
562int smb2_check_user_session(struct ksmbd_work *work)
563{
e5066499 564 struct smb2_hdr *req_hdr = work->request_buf;
e2f34481
NJ		 565 struct ksmbd_conn *conn = work->conn;
566 unsigned int cmd = conn->ops->get_cmd_val(work);
567 unsigned long long sess_id;
568
569 work->sess = NULL;
570 /*
571 * SMB2_ECHO, SMB2_NEGOTIATE, SMB2_SESSION_SETUP command do not
572 * require a session id, so no need to validate user session's for
573 * these commands.
574 */
575 if (cmd == SMB2_ECHO_HE || cmd == SMB2_NEGOTIATE_HE ||
64b39f4a 576 cmd == SMB2_SESSION_SETUP_HE)
e2f34481
NJ		 577 return 0;
578
579 if (!ksmbd_conn_good(work))
580 return -EINVAL;
581
582 sess_id = le64_to_cpu(req_hdr->SessionId);
583 /* Check for validity of user session */
f5a544e3 584 work->sess = ksmbd_session_lookup_all(conn, sess_id);
e2f34481
NJ		 585 if (work->sess)
586 return 1;
587 ksmbd_debug(SMB, "Invalid user session, Uid %llu\n", sess_id);
588 return -EINVAL;
589}
590
64b39f4a 591static void destroy_previous_session(struct ksmbd_user *user, u64 id)
e2f34481
NJ		 592{
593 struct ksmbd_session *prev_sess = ksmbd_session_lookup_slowpath(id);
594 struct ksmbd_user *prev_user;
595
596 if (!prev_sess)
597 return;
598
599 prev_user = prev_sess->user;
600
1fca8038
MM		 601 if (!prev_user ||
602 strcmp(user->name, prev_user->name) ||
e2f34481
NJ		 603 user->passkey_sz != prev_user->passkey_sz ||
604 memcmp(user->passkey, prev_user->passkey, user->passkey_sz)) {
605 put_session(prev_sess);
606 return;
607 }
608
609 put_session(prev_sess);
610 ksmbd_session_destroy(prev_sess);
611}
612
613/**
614 * smb2_get_name() - get filename string from on the wire smb format
95fa1ce9 615 * @share: ksmbd_share_config pointer
e2f34481
NJ		 616 * @src: source buffer
617 * @maxlen: maxlen of source string
95fa1ce9 618 * @nls_table: nls_table pointer
e2f34481
NJ		 619 *
620 * Return: matching converted filename on success, otherwise error ptr
621 */
622static char *
64b39f4a 623smb2_get_name(struct ksmbd_share_config *share, const char *src,
070fb21e 624 const int maxlen, struct nls_table *local_nls)
e2f34481 625{
265fd199 626 char *name;
e2f34481 627
64b39f4a 628 name = smb_strndup_from_utf16(src, maxlen, 1, local_nls);
e2f34481 629 if (IS_ERR(name)) {
bde1694a 630 pr_err("failed to get name %ld\n", PTR_ERR(name));
e2f34481
NJ		 631 return name;
632 }
633
265fd199
HL		 634 ksmbd_conv_path_to_unix(name);
635 ksmbd_strip_last_slash(name);
636 return name;
e2f34481
NJ		 637}
638
e2f34481
NJ		 639int setup_async_work(struct ksmbd_work *work, void (*fn)(void **), void **arg)
640{
641 struct smb2_hdr *rsp_hdr;
642 struct ksmbd_conn *conn = work->conn;
643 int id;
644
e5066499 645 rsp_hdr = work->response_buf;
e2f34481
NJ		 646 rsp_hdr->Flags |= SMB2_FLAGS_ASYNC_COMMAND;
647
d40012a8 648 id = ksmbd_acquire_async_msg_id(&conn->async_ida);
e2f34481 649 if (id < 0) {
bde1694a 650 pr_err("Failed to alloc async message id\n");
e2f34481
NJ		 651 return id;
652 }
653 work->syncronous = false;
654 work->async_id = id;
655 rsp_hdr->Id.AsyncId = cpu_to_le64(id);
656
657 ksmbd_debug(SMB,
070fb21e
NJ		 658 "Send interim Response to inform async request id : %d\n",
659 work->async_id);
e2f34481
NJ		 660
661 work->cancel_fn = fn;
662 work->cancel_argv = arg;
663
6c4e675a
NJ		 664 if (list_empty(&work->async_request_entry)) {
665 spin_lock(&conn->request_lock);
666 list_add_tail(&work->async_request_entry, &conn->async_requests);
667 spin_unlock(&conn->request_lock);
668 }
e2f34481
NJ		 669
670 return 0;
671}
672
673void smb2_send_interim_resp(struct ksmbd_work *work, __le32 status)
674{
675 struct smb2_hdr *rsp_hdr;
676
e5066499 677 rsp_hdr = work->response_buf;
e2f34481
NJ		 678 smb2_set_err_rsp(work);
679 rsp_hdr->Status = status;
680
681 work->multiRsp = 1;
682 ksmbd_conn_write(work);
683 rsp_hdr->Status = 0;
684 work->multiRsp = 0;
685}
686
687static __le32 smb2_get_reparse_tag_special_file(umode_t mode)
688{
689 if (S_ISDIR(mode) || S_ISREG(mode))
690 return 0;
691
692 if (S_ISLNK(mode))
693 return IO_REPARSE_TAG_LX_SYMLINK_LE;
694 else if (S_ISFIFO(mode))
695 return IO_REPARSE_TAG_LX_FIFO_LE;
696 else if (S_ISSOCK(mode))
697 return IO_REPARSE_TAG_AF_UNIX_LE;
698 else if (S_ISCHR(mode))
699 return IO_REPARSE_TAG_LX_CHR_LE;
700 else if (S_ISBLK(mode))
701 return IO_REPARSE_TAG_LX_BLK_LE;
702
703 return 0;
704}
705
706/**
707 * smb2_get_dos_mode() - get file mode in dos format from unix mode
708 * @stat: kstat containing file mode
95fa1ce9 709 * @attribute: attribute flags
e2f34481
NJ		 710 *
711 * Return: converted dos mode
712 */
713static int smb2_get_dos_mode(struct kstat *stat, int attribute)
714{
715 int attr = 0;
716
64b39f4a 717 if (S_ISDIR(stat->mode)) {
e2f34481
NJ		 718 attr = ATTR_DIRECTORY |
719 (attribute & (ATTR_HIDDEN | ATTR_SYSTEM));
64b39f4a 720 } else {
e2f34481
NJ		 721 attr = (attribute & 0x00005137) | ATTR_ARCHIVE;
722 attr &= ~(ATTR_DIRECTORY);
723 if (S_ISREG(stat->mode) && (server_conf.share_fake_fscaps &
724 FILE_SUPPORTS_SPARSE_FILES))
725 attr |= ATTR_SPARSE;
726
727 if (smb2_get_reparse_tag_special_file(stat->mode))
728 attr |= ATTR_REPARSE;
729 }
730
731 return attr;
732}
733
734static void build_preauth_ctxt(struct smb2_preauth_neg_context *pneg_ctxt,
070fb21e 735 __le16 hash_id)
e2f34481
NJ		 736{
737 pneg_ctxt->ContextType = SMB2_PREAUTH_INTEGRITY_CAPABILITIES;
738 pneg_ctxt->DataLength = cpu_to_le16(38);
739 pneg_ctxt->HashAlgorithmCount = cpu_to_le16(1);
740 pneg_ctxt->Reserved = cpu_to_le32(0);
741 pneg_ctxt->SaltLength = cpu_to_le16(SMB311_SALT_SIZE);
742 get_random_bytes(pneg_ctxt->Salt, SMB311_SALT_SIZE);
743 pneg_ctxt->HashAlgorithms = hash_id;
744}
745
746static void build_encrypt_ctxt(struct smb2_encryption_neg_context *pneg_ctxt,
070fb21e 747 __le16 cipher_type)
e2f34481
NJ		 748{
749 pneg_ctxt->ContextType = SMB2_ENCRYPTION_CAPABILITIES;
750 pneg_ctxt->DataLength = cpu_to_le16(4);
751 pneg_ctxt->Reserved = cpu_to_le32(0);
752 pneg_ctxt->CipherCount = cpu_to_le16(1);
753 pneg_ctxt->Ciphers[0] = cipher_type;
754}
755
756static void build_compression_ctxt(struct smb2_compression_ctx *pneg_ctxt,
070fb21e 757 __le16 comp_algo)
e2f34481
NJ		 758{
759 pneg_ctxt->ContextType = SMB2_COMPRESSION_CAPABILITIES;
760 pneg_ctxt->DataLength =
761 cpu_to_le16(sizeof(struct smb2_compression_ctx)
762 - sizeof(struct smb2_neg_context));
763 pneg_ctxt->Reserved = cpu_to_le32(0);
764 pneg_ctxt->CompressionAlgorithmCount = cpu_to_le16(1);
765 pneg_ctxt->Reserved1 = cpu_to_le32(0);
766 pneg_ctxt->CompressionAlgorithms[0] = comp_algo;
767}
768
378087cd
NJ		 769static void build_sign_cap_ctxt(struct smb2_signing_capabilities *pneg_ctxt,
770 __le16 sign_algo)
771{
772 pneg_ctxt->ContextType = SMB2_SIGNING_CAPABILITIES;
773 pneg_ctxt->DataLength =
774 cpu_to_le16((sizeof(struct smb2_signing_capabilities) + 2)
775 - sizeof(struct smb2_neg_context));
776 pneg_ctxt->Reserved = cpu_to_le32(0);
777 pneg_ctxt->SigningAlgorithmCount = cpu_to_le16(1);
778 pneg_ctxt->SigningAlgorithms[0] = sign_algo;
779}
780
64b39f4a 781static void build_posix_ctxt(struct smb2_posix_neg_context *pneg_ctxt)
e2f34481
NJ		 782{
783 pneg_ctxt->ContextType = SMB2_POSIX_EXTENSIONS_AVAILABLE;
784 pneg_ctxt->DataLength = cpu_to_le16(POSIX_CTXT_DATA_LEN);
785 /* SMB2_CREATE_TAG_POSIX is "0x93AD25509CB411E7B42383DE968BCD7C" */
786 pneg_ctxt->Name[0] = 0x93;
787 pneg_ctxt->Name[1] = 0xAD;
788 pneg_ctxt->Name[2] = 0x25;
789 pneg_ctxt->Name[3] = 0x50;
790 pneg_ctxt->Name[4] = 0x9C;
791 pneg_ctxt->Name[5] = 0xB4;
792 pneg_ctxt->Name[6] = 0x11;
793 pneg_ctxt->Name[7] = 0xE7;
794 pneg_ctxt->Name[8] = 0xB4;
795 pneg_ctxt->Name[9] = 0x23;
796 pneg_ctxt->Name[10] = 0x83;
797 pneg_ctxt->Name[11] = 0xDE;
798 pneg_ctxt->Name[12] = 0x96;
799 pneg_ctxt->Name[13] = 0x8B;
800 pneg_ctxt->Name[14] = 0xCD;
801 pneg_ctxt->Name[15] = 0x7C;
802}
803
64b39f4a 804static void assemble_neg_contexts(struct ksmbd_conn *conn,
070fb21e 805 struct smb2_negotiate_rsp *rsp)
e2f34481
NJ		 806{
807 /* +4 is to account for the RFC1001 len field */
808 char *pneg_ctxt = (char *)rsp +
809 le32_to_cpu(rsp->NegotiateContextOffset) + 4;
810 int neg_ctxt_cnt = 1;
811 int ctxt_size;
812
813 ksmbd_debug(SMB,
070fb21e 814 "assemble SMB2_PREAUTH_INTEGRITY_CAPABILITIES context\n");
e2f34481 815 build_preauth_ctxt((struct smb2_preauth_neg_context *)pneg_ctxt,
070fb21e 816 conn->preauth_info->Preauth_HashId);
e2f34481
NJ		 817 rsp->NegotiateContextCount = cpu_to_le16(neg_ctxt_cnt);
818 inc_rfc1001_len(rsp, AUTH_GSS_PADDING);
819 ctxt_size = sizeof(struct smb2_preauth_neg_context);
820 /* Round to 8 byte boundary */
821 pneg_ctxt += round_up(sizeof(struct smb2_preauth_neg_context), 8);
822
823 if (conn->cipher_type) {
824 ctxt_size = round_up(ctxt_size, 8);
825 ksmbd_debug(SMB,
070fb21e 826 "assemble SMB2_ENCRYPTION_CAPABILITIES context\n");
64b39f4a 827 build_encrypt_ctxt((struct smb2_encryption_neg_context *)pneg_ctxt,
070fb21e 828 conn->cipher_type);
e2f34481 829 rsp->NegotiateContextCount = cpu_to_le16(++neg_ctxt_cnt);
af320a73 830 ctxt_size += sizeof(struct smb2_encryption_neg_context) + 2;
e2f34481
NJ		 831 /* Round to 8 byte boundary */
832 pneg_ctxt +=
af320a73 833 round_up(sizeof(struct smb2_encryption_neg_context) + 2,
e2f34481
NJ		 834 8);
835 }
836
837 if (conn->compress_algorithm) {
838 ctxt_size = round_up(ctxt_size, 8);
839 ksmbd_debug(SMB,
070fb21e 840 "assemble SMB2_COMPRESSION_CAPABILITIES context\n");
e2f34481
NJ		 841 /* Temporarily set to SMB3_COMPRESS_NONE */
842 build_compression_ctxt((struct smb2_compression_ctx *)pneg_ctxt,
070fb21e 843 conn->compress_algorithm);
e2f34481 844 rsp->NegotiateContextCount = cpu_to_le16(++neg_ctxt_cnt);
af320a73 845 ctxt_size += sizeof(struct smb2_compression_ctx) + 2;
e2f34481 846 /* Round to 8 byte boundary */
af320a73
NJ		 847 pneg_ctxt += round_up(sizeof(struct smb2_compression_ctx) + 2,
848 8);
e2f34481
NJ		 849 }
850
851 if (conn->posix_ext_supported) {
852 ctxt_size = round_up(ctxt_size, 8);
853 ksmbd_debug(SMB,
070fb21e 854 "assemble SMB2_POSIX_EXTENSIONS_AVAILABLE context\n");
e2f34481
NJ		 855 build_posix_ctxt((struct smb2_posix_neg_context *)pneg_ctxt);
856 rsp->NegotiateContextCount = cpu_to_le16(++neg_ctxt_cnt);
857 ctxt_size += sizeof(struct smb2_posix_neg_context);
378087cd
NJ		 858 /* Round to 8 byte boundary */
859 pneg_ctxt += round_up(sizeof(struct smb2_posix_neg_context), 8);
860 }
861
862 if (conn->signing_negotiated) {
863 ctxt_size = round_up(ctxt_size, 8);
864 ksmbd_debug(SMB,
865 "assemble SMB2_SIGNING_CAPABILITIES context\n");
866 build_sign_cap_ctxt((struct smb2_signing_capabilities *)pneg_ctxt,
867 conn->signing_algorithm);
868 rsp->NegotiateContextCount = cpu_to_le16(++neg_ctxt_cnt);
869 ctxt_size += sizeof(struct smb2_signing_capabilities) + 2;
e2f34481
NJ		 870 }
871
872 inc_rfc1001_len(rsp, ctxt_size);
873}
874
64b39f4a 875static __le32 decode_preauth_ctxt(struct ksmbd_conn *conn,
070fb21e 876 struct smb2_preauth_neg_context *pneg_ctxt)
e2f34481
NJ		 877{
878 __le32 err = STATUS_NO_PREAUTH_INTEGRITY_HASH_OVERLAP;
879
070fb21e 880 if (pneg_ctxt->HashAlgorithms == SMB2_PREAUTH_INTEGRITY_SHA512) {
e2f34481
NJ		 881 conn->preauth_info->Preauth_HashId =
882 SMB2_PREAUTH_INTEGRITY_SHA512;
883 err = STATUS_SUCCESS;
884 }
885
886 return err;
887}
888
af320a73
NJ		 889static void decode_encrypt_ctxt(struct ksmbd_conn *conn,
890 struct smb2_encryption_neg_context *pneg_ctxt,
891 int len_of_ctxts)
e2f34481 892{
e2f34481 893 int cph_cnt = le16_to_cpu(pneg_ctxt->CipherCount);
af320a73 894 int i, cphs_size = cph_cnt * sizeof(__le16);
e2f34481
NJ		 895
896 conn->cipher_type = 0;
897
af320a73
NJ		 898 if (sizeof(struct smb2_encryption_neg_context) + cphs_size >
899 len_of_ctxts) {
900 pr_err("Invalid cipher count(%d)\n", cph_cnt);
901 return;
902 }
903
e2f34481 904 if (!(server_conf.flags & KSMBD_GLOBAL_FLAG_SMB2_ENCRYPTION))
af320a73 905 return;
e2f34481
NJ		 906
907 for (i = 0; i < cph_cnt; i++) {
908 if (pneg_ctxt->Ciphers[i] == SMB2_ENCRYPTION_AES128_GCM ||
5a0ca770
NJ		 909 pneg_ctxt->Ciphers[i] == SMB2_ENCRYPTION_AES128_CCM ||
910 pneg_ctxt->Ciphers[i] == SMB2_ENCRYPTION_AES256_CCM ||
911 pneg_ctxt->Ciphers[i] == SMB2_ENCRYPTION_AES256_GCM) {
e2f34481 912 ksmbd_debug(SMB, "Cipher ID = 0x%x\n",
070fb21e 913 pneg_ctxt->Ciphers[i]);
e2f34481
NJ		 914 conn->cipher_type = pneg_ctxt->Ciphers[i];
915 break;
916 }
917 }
e2f34481
NJ		 918}
919
af320a73
NJ		 920static void decode_compress_ctxt(struct ksmbd_conn *conn,
921 struct smb2_compression_ctx *pneg_ctxt)
e2f34481 922{
e2f34481 923 conn->compress_algorithm = SMB3_COMPRESS_NONE;
e2f34481
NJ		 924}
925
378087cd
NJ		 926static void decode_sign_cap_ctxt(struct ksmbd_conn *conn,
927 struct smb2_signing_capabilities *pneg_ctxt,
928 int len_of_ctxts)
929{
930 int sign_algo_cnt = le16_to_cpu(pneg_ctxt->SigningAlgorithmCount);
931 int i, sign_alos_size = sign_algo_cnt * sizeof(__le16);
932
933 conn->signing_negotiated = false;
934
935 if (sizeof(struct smb2_signing_capabilities) + sign_alos_size >
936 len_of_ctxts) {
937 pr_err("Invalid signing algorithm count(%d)\n", sign_algo_cnt);
938 return;
939 }
940
941 for (i = 0; i < sign_algo_cnt; i++) {
942 if (pneg_ctxt->SigningAlgorithms[i] == SIGNING_ALG_HMAC_SHA256 ||
943 pneg_ctxt->SigningAlgorithms[i] == SIGNING_ALG_AES_CMAC) {
944 ksmbd_debug(SMB, "Signing Algorithm ID = 0x%x\n",
945 pneg_ctxt->SigningAlgorithms[i]);
946 conn->signing_negotiated = true;
947 conn->signing_algorithm =
948 pneg_ctxt->SigningAlgorithms[i];
949 break;
950 }
951 }
952}
953
e2f34481 954static __le32 deassemble_neg_contexts(struct ksmbd_conn *conn,
070fb21e 955 struct smb2_negotiate_req *req)
e2f34481 956{
e2f34481 957 /* +4 is to account for the RFC1001 len field */
af320a73
NJ		 958 struct smb2_neg_context *pctx = (struct smb2_neg_context *)((char *)req + 4);
959 int i = 0, len_of_ctxts;
960 int offset = le32_to_cpu(req->NegotiateContextOffset);
e2f34481 961 int neg_ctxt_cnt = le16_to_cpu(req->NegotiateContextCount);
af320a73
NJ		 962 int len_of_smb = be32_to_cpu(req->hdr.smb2_buf_length);
963 __le32 status = STATUS_INVALID_PARAMETER;
964
965 ksmbd_debug(SMB, "decoding %d negotiate contexts\n", neg_ctxt_cnt);
966 if (len_of_smb <= offset) {
967 ksmbd_debug(SMB, "Invalid response: negotiate context offset\n");
968 return status;
969 }
970
971 len_of_ctxts = len_of_smb - offset;
e2f34481 972
e2f34481 973 while (i++ < neg_ctxt_cnt) {
af320a73
NJ		 974 int clen;
975
976 /* check that offset is not beyond end of SMB */
977 if (len_of_ctxts == 0)
978 break;
979
980 if (len_of_ctxts < sizeof(struct smb2_neg_context))
981 break;
982
983 pctx = (struct smb2_neg_context *)((char *)pctx + offset);
984 clen = le16_to_cpu(pctx->DataLength);
985 if (clen + sizeof(struct smb2_neg_context) > len_of_ctxts)
986 break;
987
988 if (pctx->ContextType == SMB2_PREAUTH_INTEGRITY_CAPABILITIES) {
e2f34481 989 ksmbd_debug(SMB,
070fb21e 990 "deassemble SMB2_PREAUTH_INTEGRITY_CAPABILITIES context\n");
e2f34481
NJ		 991 if (conn->preauth_info->Preauth_HashId)
992 break;
993
994 status = decode_preauth_ctxt(conn,
af320a73
NJ		 995 (struct smb2_preauth_neg_context *)pctx);
996 if (status != STATUS_SUCCESS)
997 break;
998 } else if (pctx->ContextType == SMB2_ENCRYPTION_CAPABILITIES) {
e2f34481 999 ksmbd_debug(SMB,
070fb21e 1000 "deassemble SMB2_ENCRYPTION_CAPABILITIES context\n");
e2f34481
NJ		 1001 if (conn->cipher_type)
1002 break;
1003
af320a73
NJ		 1004 decode_encrypt_ctxt(conn,
1005 (struct smb2_encryption_neg_context *)pctx,
1006 len_of_ctxts);
1007 } else if (pctx->ContextType == SMB2_COMPRESSION_CAPABILITIES) {
e2f34481 1008 ksmbd_debug(SMB,
070fb21e 1009 "deassemble SMB2_COMPRESSION_CAPABILITIES context\n");
e2f34481
NJ		 1010 if (conn->compress_algorithm)
1011 break;
1012
af320a73
NJ		 1013 decode_compress_ctxt(conn,
1014 (struct smb2_compression_ctx *)pctx);
1015 } else if (pctx->ContextType == SMB2_NETNAME_NEGOTIATE_CONTEXT_ID) {
e2f34481 1016 ksmbd_debug(SMB,
070fb21e 1017 "deassemble SMB2_NETNAME_NEGOTIATE_CONTEXT_ID context\n");
af320a73 1018 } else if (pctx->ContextType == SMB2_POSIX_EXTENSIONS_AVAILABLE) {
e2f34481 1019 ksmbd_debug(SMB,
070fb21e 1020 "deassemble SMB2_POSIX_EXTENSIONS_AVAILABLE context\n");
e2f34481 1021 conn->posix_ext_supported = true;
378087cd
NJ		 1022 } else if (pctx->ContextType == SMB2_SIGNING_CAPABILITIES) {
1023 ksmbd_debug(SMB,
1024 "deassemble SMB2_SIGNING_CAPABILITIES context\n");
1025 decode_sign_cap_ctxt(conn,
1026 (struct smb2_signing_capabilities *)pctx,
1027 len_of_ctxts);
e2f34481 1028 }
e2f34481 1029
af320a73
NJ		 1030 /* offsets must be 8 byte aligned */
1031 clen = (clen + 7) & ~0x7;
1032 offset = clen + sizeof(struct smb2_neg_context);
1033 len_of_ctxts -= clen + sizeof(struct smb2_neg_context);
e2f34481
NJ		 1034 }
1035 return status;
1036}
1037
1038/**
1039 * smb2_handle_negotiate() - handler for smb2 negotiate command
1040 * @work: smb work containing smb request buffer
1041 *
1042 * Return: 0
1043 */
1044int smb2_handle_negotiate(struct ksmbd_work *work)
1045{
1046 struct ksmbd_conn *conn = work->conn;
e5066499
NJ		 1047 struct smb2_negotiate_req *req = work->request_buf;
1048 struct smb2_negotiate_rsp *rsp = work->response_buf;
e2f34481 1049 int rc = 0;
442ff9eb 1050 unsigned int smb2_buf_len, smb2_neg_size;
e2f34481
NJ		 1051 __le32 status;
1052
1053 ksmbd_debug(SMB, "Received negotiate request\n");
1054 conn->need_neg = false;
1055 if (ksmbd_conn_good(work)) {
bde1694a 1056 pr_err("conn->tcp_status is already in CifsGood State\n");
e2f34481
NJ		 1057 work->send_no_response = 1;
1058 return rc;
1059 }
1060
1061 if (req->DialectCount == 0) {
bde1694a 1062 pr_err("malformed packet\n");
e2f34481
NJ		 1063 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
1064 rc = -EINVAL;
1065 goto err_out;
1066 }
1067
442ff9eb
NJ		 1068 smb2_buf_len = get_rfc1002_len(work->request_buf);
1069 smb2_neg_size = offsetof(struct smb2_negotiate_req, Dialects) - 4;
1070 if (smb2_neg_size > smb2_buf_len) {
1071 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
1072 rc = -EINVAL;
1073 goto err_out;
1074 }
1075
1076 if (conn->dialect == SMB311_PROT_ID) {
1077 unsigned int nego_ctxt_off = le32_to_cpu(req->NegotiateContextOffset);
1078
1079 if (smb2_buf_len < nego_ctxt_off) {
1080 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
1081 rc = -EINVAL;
1082 goto err_out;
1083 }
1084
1085 if (smb2_neg_size > nego_ctxt_off) {
1086 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
1087 rc = -EINVAL;
1088 goto err_out;
1089 }
1090
1091 if (smb2_neg_size + le16_to_cpu(req->DialectCount) * sizeof(__le16) >
1092 nego_ctxt_off) {
1093 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
1094 rc = -EINVAL;
1095 goto err_out;
1096 }
1097 } else {
1098 if (smb2_neg_size + le16_to_cpu(req->DialectCount) * sizeof(__le16) >
1099 smb2_buf_len) {
1100 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
1101 rc = -EINVAL;
1102 goto err_out;
1103 }
1104 }
1105
e2f34481
NJ		 1106 conn->cli_cap = le32_to_cpu(req->Capabilities);
1107 switch (conn->dialect) {
1108 case SMB311_PROT_ID:
1109 conn->preauth_info =
1110 kzalloc(sizeof(struct preauth_integrity_info),
070fb21e 1111 GFP_KERNEL);
e2f34481
NJ		 1112 if (!conn->preauth_info) {
1113 rc = -ENOMEM;
1114 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
1115 goto err_out;
1116 }
1117
1118 status = deassemble_neg_contexts(conn, req);
1119 if (status != STATUS_SUCCESS) {
bde1694a
NJ		 1120 pr_err("deassemble_neg_contexts error(0x%x)\n",
1121 status);
e2f34481
NJ		 1122 rsp->hdr.Status = status;
1123 rc = -EINVAL;
1124 goto err_out;
1125 }
1126
1127 rc = init_smb3_11_server(conn);
1128 if (rc < 0) {
1129 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
1130 goto err_out;
1131 }
1132
1133 ksmbd_gen_preauth_integrity_hash(conn,
070fb21e
NJ		 1134 work->request_buf,
1135 conn->preauth_info->Preauth_HashValue);
e2f34481
NJ		 1136 rsp->NegotiateContextOffset =
1137 cpu_to_le32(OFFSET_OF_NEG_CONTEXT);
1138 assemble_neg_contexts(conn, rsp);
1139 break;
1140 case SMB302_PROT_ID:
1141 init_smb3_02_server(conn);
1142 break;
1143 case SMB30_PROT_ID:
1144 init_smb3_0_server(conn);
1145 break;
1146 case SMB21_PROT_ID:
1147 init_smb2_1_server(conn);
1148 break;
e2f34481
NJ		 1149 case SMB2X_PROT_ID:
1150 case BAD_PROT_ID:
1151 default:
1152 ksmbd_debug(SMB, "Server dialect :0x%x not supported\n",
070fb21e 1153 conn->dialect);
e2f34481
NJ		 1154 rsp->hdr.Status = STATUS_NOT_SUPPORTED;
1155 rc = -EINVAL;
1156 goto err_out;
1157 }
1158 rsp->Capabilities = cpu_to_le32(conn->vals->capabilities);
1159
1160 /* For stats */
1161 conn->connection_type = conn->dialect;
1162
1163 rsp->MaxTransactSize = cpu_to_le32(conn->vals->max_trans_size);
1164 rsp->MaxReadSize = cpu_to_le32(conn->vals->max_read_size);
1165 rsp->MaxWriteSize = cpu_to_le32(conn->vals->max_write_size);
1166
51a13873
NJ		 1167 memcpy(conn->ClientGUID, req->ClientGUID,
1168 SMB2_CLIENT_GUID_SIZE);
1169 conn->cli_sec_mode = le16_to_cpu(req->SecurityMode);
e2f34481
NJ		 1170
1171 rsp->StructureSize = cpu_to_le16(65);
1172 rsp->DialectRevision = cpu_to_le16(conn->dialect);
1173 /* Not setting conn guid rsp->ServerGUID, as it
1174 * not used by client for identifying server
1175 */
1176 memset(rsp->ServerGUID, 0, SMB2_CLIENT_GUID_SIZE);
1177
1178 rsp->SystemTime = cpu_to_le64(ksmbd_systime());
1179 rsp->ServerStartTime = 0;
1180 ksmbd_debug(SMB, "negotiate context offset %d, count %d\n",
070fb21e
NJ		 1181 le32_to_cpu(rsp->NegotiateContextOffset),
1182 le16_to_cpu(rsp->NegotiateContextCount));
e2f34481
NJ		 1183
1184 rsp->SecurityBufferOffset = cpu_to_le16(128);
1185 rsp->SecurityBufferLength = cpu_to_le16(AUTH_GSS_LENGTH);
1186 ksmbd_copy_gss_neg_header(((char *)(&rsp->hdr) +
070fb21e
NJ		 1187 sizeof(rsp->hdr.smb2_buf_length)) +
1188 le16_to_cpu(rsp->SecurityBufferOffset));
e2f34481 1189 inc_rfc1001_len(rsp, sizeof(struct smb2_negotiate_rsp) -
070fb21e
NJ		 1190 sizeof(struct smb2_hdr) - sizeof(rsp->Buffer) +
1191 AUTH_GSS_LENGTH);
e2f34481
NJ		 1192 rsp->SecurityMode = SMB2_NEGOTIATE_SIGNING_ENABLED_LE;
1193 conn->use_spnego = true;
1194
1195 if ((server_conf.signing == KSMBD_CONFIG_OPT_AUTO ||
64b39f4a
NJ		 1196 server_conf.signing == KSMBD_CONFIG_OPT_DISABLED) &&
1197 req->SecurityMode & SMB2_NEGOTIATE_SIGNING_REQUIRED_LE)
e2f34481
NJ		 1198 conn->sign = true;
1199 else if (server_conf.signing == KSMBD_CONFIG_OPT_MANDATORY) {
1200 server_conf.enforced_signing = true;
1201 rsp->SecurityMode |= SMB2_NEGOTIATE_SIGNING_REQUIRED_LE;
1202 conn->sign = true;
1203 }
1204
1205 conn->srv_sec_mode = le16_to_cpu(rsp->SecurityMode);
1206 ksmbd_conn_set_need_negotiate(work);
1207
1208err_out:
1209 if (rc < 0)
1210 smb2_set_err_rsp(work);
1211
1212 return rc;
1213}
1214
1215static int alloc_preauth_hash(struct ksmbd_session *sess,
070fb21e 1216 struct ksmbd_conn *conn)
e2f34481
NJ		 1217{
1218 if (sess->Preauth_HashValue)
1219 return 0;
1220
86f52978 1221 sess->Preauth_HashValue = kmemdup(conn->preauth_info->Preauth_HashValue,
070fb21e 1222 PREAUTH_HASHVALUE_SIZE, GFP_KERNEL);
e2f34481
NJ		 1223 if (!sess->Preauth_HashValue)
1224 return -ENOMEM;
1225
e2f34481
NJ		 1226 return 0;
1227}
1228
1229static int generate_preauth_hash(struct ksmbd_work *work)
1230{
1231 struct ksmbd_conn *conn = work->conn;
1232 struct ksmbd_session *sess = work->sess;
f5a544e3 1233 u8 *preauth_hash;
e2f34481
NJ		 1234
1235 if (conn->dialect != SMB311_PROT_ID)
1236 return 0;
1237
f5a544e3
NJ		 1238 if (conn->binding) {
1239 struct preauth_session *preauth_sess;
1240
1241 preauth_sess = ksmbd_preauth_session_lookup(conn, sess->id);
1242 if (!preauth_sess) {
1243 preauth_sess = ksmbd_preauth_session_alloc(conn, sess->id);
1244 if (!preauth_sess)
1245 return -ENOMEM;
1246 }
1247
1248 preauth_hash = preauth_sess->Preauth_HashValue;
1249 } else {
1250 if (!sess->Preauth_HashValue)
1251 if (alloc_preauth_hash(sess, conn))
1252 return -ENOMEM;
1253 preauth_hash = sess->Preauth_HashValue;
e2f34481
NJ		 1254 }
1255
f5a544e3 1256 ksmbd_gen_preauth_integrity_hash(conn, work->request_buf, preauth_hash);
e2f34481
NJ		 1257 return 0;
1258}
1259
1260static int decode_negotiation_token(struct ksmbd_work *work,
070fb21e 1261 struct negotiate_message *negblob)
e2f34481
NJ		 1262{
1263 struct ksmbd_conn *conn = work->conn;
1264 struct smb2_sess_setup_req *req;
1265 int sz;
1266
1267 if (!conn->use_spnego)
1268 return -EINVAL;
1269
e5066499 1270 req = work->request_buf;
e2f34481
NJ		 1271 sz = le16_to_cpu(req->SecurityBufferLength);
1272
fad4161b
HL		 1273 if (ksmbd_decode_negTokenInit((char *)negblob, sz, conn)) {
1274 if (ksmbd_decode_negTokenTarg((char *)negblob, sz, conn)) {
e2f34481
NJ		 1275 conn->auth_mechs |= KSMBD_AUTH_NTLMSSP;
1276 conn->preferred_auth_mech = KSMBD_AUTH_NTLMSSP;
1277 conn->use_spnego = false;
1278 }
1279 }
1280 return 0;
1281}
1282
1283static int ntlm_negotiate(struct ksmbd_work *work,
070fb21e 1284 struct negotiate_message *negblob)
e2f34481 1285{
e5066499
NJ		 1286 struct smb2_sess_setup_req *req = work->request_buf;
1287 struct smb2_sess_setup_rsp *rsp = work->response_buf;
e2f34481
NJ		 1288 struct challenge_message *chgblob;
1289 unsigned char *spnego_blob = NULL;
1290 u16 spnego_blob_len;
1291 char *neg_blob;
1292 int sz, rc;
1293
1294 ksmbd_debug(SMB, "negotiate phase\n");
1295 sz = le16_to_cpu(req->SecurityBufferLength);
1296 rc = ksmbd_decode_ntlmssp_neg_blob(negblob, sz, work->sess);
1297 if (rc)
1298 return rc;
1299
1300 sz = le16_to_cpu(rsp->SecurityBufferOffset);
1301 chgblob =
1302 (struct challenge_message *)((char *)&rsp->hdr.ProtocolId + sz);
1303 memset(chgblob, 0, sizeof(struct challenge_message));
1304
1305 if (!work->conn->use_spnego) {
1306 sz = ksmbd_build_ntlmssp_challenge_blob(chgblob, work->sess);
1307 if (sz < 0)
1308 return -ENOMEM;
1309
1310 rsp->SecurityBufferLength = cpu_to_le16(sz);
1311 return 0;
1312 }
1313
1314 sz = sizeof(struct challenge_message);
1315 sz += (strlen(ksmbd_netbios_name()) * 2 + 1 + 4) * 6;
1316
1317 neg_blob = kzalloc(sz, GFP_KERNEL);
1318 if (!neg_blob)
1319 return -ENOMEM;
1320
1321 chgblob = (struct challenge_message *)neg_blob;
1322 sz = ksmbd_build_ntlmssp_challenge_blob(chgblob, work->sess);
1323 if (sz < 0) {
1324 rc = -ENOMEM;
1325 goto out;
1326 }
1327
070fb21e
NJ		 1328 rc = build_spnego_ntlmssp_neg_blob(&spnego_blob, &spnego_blob_len,
1329 neg_blob, sz);
e2f34481
NJ		 1330 if (rc) {
1331 rc = -ENOMEM;
1332 goto out;
1333 }
1334
1335 sz = le16_to_cpu(rsp->SecurityBufferOffset);
1336 memcpy((char *)&rsp->hdr.ProtocolId + sz, spnego_blob, spnego_blob_len);
1337 rsp->SecurityBufferLength = cpu_to_le16(spnego_blob_len);
1338
1339out:
1340 kfree(spnego_blob);
1341 kfree(neg_blob);
1342 return rc;
1343}
1344
1345static struct authenticate_message *user_authblob(struct ksmbd_conn *conn,
070fb21e 1346 struct smb2_sess_setup_req *req)
e2f34481
NJ		 1347{
1348 int sz;
1349
1350 if (conn->use_spnego && conn->mechToken)
1351 return (struct authenticate_message *)conn->mechToken;
1352
1353 sz = le16_to_cpu(req->SecurityBufferOffset);
1354 return (struct authenticate_message *)((char *)&req->hdr.ProtocolId
1355 + sz);
1356}
1357
1358static struct ksmbd_user *session_user(struct ksmbd_conn *conn,
070fb21e 1359 struct smb2_sess_setup_req *req)
e2f34481
NJ		 1360{
1361 struct authenticate_message *authblob;
1362 struct ksmbd_user *user;
1363 char *name;
1364 int sz;
1365
1366 authblob = user_authblob(conn, req);
1367 sz = le32_to_cpu(authblob->UserName.BufferOffset);
1368 name = smb_strndup_from_utf16((const char *)authblob + sz,
1369 le16_to_cpu(authblob->UserName.Length),
1370 true,
1371 conn->local_nls);
1372 if (IS_ERR(name)) {
bde1694a 1373 pr_err("cannot allocate memory\n");
e2f34481
NJ		 1374 return NULL;
1375 }
1376
1377 ksmbd_debug(SMB, "session setup request for user %s\n", name);
1378 user = ksmbd_login_user(name);
1379 kfree(name);
1380 return user;
1381}
1382
1383static int ntlm_authenticate(struct ksmbd_work *work)
1384{
e5066499
NJ		 1385 struct smb2_sess_setup_req *req = work->request_buf;
1386 struct smb2_sess_setup_rsp *rsp = work->response_buf;
e2f34481
NJ		 1387 struct ksmbd_conn *conn = work->conn;
1388 struct ksmbd_session *sess = work->sess;
1389 struct channel *chann = NULL;
1390 struct ksmbd_user *user;
64b39f4a 1391 u64 prev_id;
e2f34481
NJ		 1392 int sz, rc;
1393
1394 ksmbd_debug(SMB, "authenticate phase\n");
1395 if (conn->use_spnego) {
1396 unsigned char *spnego_blob;
1397 u16 spnego_blob_len;
1398
1399 rc = build_spnego_ntlmssp_auth_blob(&spnego_blob,
1400 &spnego_blob_len,
1401 0);
1402 if (rc)
1403 return -ENOMEM;
1404
1405 sz = le16_to_cpu(rsp->SecurityBufferOffset);
64b39f4a 1406 memcpy((char *)&rsp->hdr.ProtocolId + sz, spnego_blob, spnego_blob_len);
e2f34481
NJ		 1407 rsp->SecurityBufferLength = cpu_to_le16(spnego_blob_len);
1408 kfree(spnego_blob);
1409 inc_rfc1001_len(rsp, spnego_blob_len - 1);
1410 }
1411
1412 user = session_user(conn, req);
1413 if (!user) {
1414 ksmbd_debug(SMB, "Unknown user name or an error\n");
58090b17 1415 return -EPERM;
e2f34481
NJ		 1416 }
1417
1418 /* Check for previous session */
1419 prev_id = le64_to_cpu(req->PreviousSessionId);
1420 if (prev_id && prev_id != sess->id)
1421 destroy_previous_session(user, prev_id);
1422
1423 if (sess->state == SMB2_SESSION_VALID) {
1424 /*
1425 * Reuse session if anonymous try to connect
1426 * on reauthetication.
1427 */
1428 if (ksmbd_anonymous_user(user)) {
1429 ksmbd_free_user(user);
1430 return 0;
1431 }
1432 ksmbd_free_user(sess->user);
1433 }
1434
1435 sess->user = user;
1436 if (user_guest(sess->user)) {
1437 if (conn->sign) {
64b39f4a 1438 ksmbd_debug(SMB, "Guest login not allowed when signing enabled\n");
58090b17 1439 return -EPERM;
e2f34481
NJ		 1440 }
1441
1442 rsp->SessionFlags = SMB2_SESSION_FLAG_IS_GUEST_LE;
1443 } else {
1444 struct authenticate_message *authblob;
1445
1446 authblob = user_authblob(conn, req);
1447 sz = le16_to_cpu(req->SecurityBufferLength);
1448 rc = ksmbd_decode_ntlmssp_auth_blob(authblob, sz, sess);
1449 if (rc) {
1450 set_user_flag(sess->user, KSMBD_USER_FLAG_BAD_PASSWORD);
1451 ksmbd_debug(SMB, "authentication failed\n");
58090b17 1452 return -EPERM;
e2f34481
NJ		 1453 }
1454
1455 /*
1456 * If session state is SMB2_SESSION_VALID, We can assume
1457 * that it is reauthentication. And the user/password
1458 * has been verified, so return it here.
1459 */
f5a544e3
NJ		 1460 if (sess->state == SMB2_SESSION_VALID) {
1461 if (conn->binding)
1462 goto binding_session;
e2f34481 1463 return 0;
f5a544e3 1464 }
e2f34481
NJ		 1465
1466 if ((conn->sign || server_conf.enforced_signing) ||
64b39f4a 1467 (req->SecurityMode & SMB2_NEGOTIATE_SIGNING_REQUIRED))
e2f34481
NJ		 1468 sess->sign = true;
1469
1470 if (conn->vals->capabilities & SMB2_GLOBAL_CAP_ENCRYPTION &&
f5a544e3
NJ		 1471 conn->ops->generate_encryptionkey &&
1472 !(req->Flags & SMB2_SESSION_REQ_FLAG_BINDING)) {
e2f34481
NJ		 1473 rc = conn->ops->generate_encryptionkey(sess);
1474 if (rc) {
1475 ksmbd_debug(SMB,
070fb21e 1476 "SMB3 encryption key generation failed\n");
58090b17 1477 return -EINVAL;
e2f34481
NJ		 1478 }
1479 sess->enc = true;
1480 rsp->SessionFlags = SMB2_SESSION_FLAG_ENCRYPT_DATA_LE;
1481 /*
1482 * signing is disable if encryption is enable
1483 * on this session
1484 */
1485 sess->sign = false;
1486 }
1487 }
1488
f5a544e3 1489binding_session:
e2f34481 1490 if (conn->dialect >= SMB30_PROT_ID) {
f5a544e3 1491 chann = lookup_chann_list(sess, conn);
e2f34481
NJ		 1492 if (!chann) {
1493 chann = kmalloc(sizeof(struct channel), GFP_KERNEL);
1494 if (!chann)
1495 return -ENOMEM;
1496
1497 chann->conn = conn;
1498 INIT_LIST_HEAD(&chann->chann_list);
1499 list_add(&chann->chann_list, &sess->ksmbd_chann_list);
1500 }
1501 }
1502
1503 if (conn->ops->generate_signingkey) {
f5a544e3 1504 rc = conn->ops->generate_signingkey(sess, conn);
e2f34481 1505 if (rc) {
64b39f4a 1506 ksmbd_debug(SMB, "SMB3 signing key generation failed\n");
58090b17 1507 return -EINVAL;
e2f34481
NJ		 1508 }
1509 }
1510
51a13873
NJ		 1511 if (!ksmbd_conn_lookup_dialect(conn)) {
1512 pr_err("fail to verify the dialect\n");
1513 return -ENOENT;
e2f34481
NJ		 1514 }
1515 return 0;
1516}
1517
1518#ifdef CONFIG_SMB_SERVER_KERBEROS5
1519static int krb5_authenticate(struct ksmbd_work *work)
1520{
e5066499
NJ		 1521 struct smb2_sess_setup_req *req = work->request_buf;
1522 struct smb2_sess_setup_rsp *rsp = work->response_buf;
e2f34481
NJ		 1523 struct ksmbd_conn *conn = work->conn;
1524 struct ksmbd_session *sess = work->sess;
1525 char *in_blob, *out_blob;
1526 struct channel *chann = NULL;
64b39f4a 1527 u64 prev_sess_id;
e2f34481
NJ		 1528 int in_len, out_len;
1529 int retval;
1530
1531 in_blob = (char *)&req->hdr.ProtocolId +
1532 le16_to_cpu(req->SecurityBufferOffset);
1533 in_len = le16_to_cpu(req->SecurityBufferLength);
1534 out_blob = (char *)&rsp->hdr.ProtocolId +
1535 le16_to_cpu(rsp->SecurityBufferOffset);
1536 out_len = work->response_sz -
1537 offsetof(struct smb2_hdr, smb2_buf_length) -
1538 le16_to_cpu(rsp->SecurityBufferOffset);
1539
1540 /* Check previous session */
1541 prev_sess_id = le64_to_cpu(req->PreviousSessionId);
1542 if (prev_sess_id && prev_sess_id != sess->id)
1543 destroy_previous_session(sess->user, prev_sess_id);
1544
1545 if (sess->state == SMB2_SESSION_VALID)
1546 ksmbd_free_user(sess->user);
1547
1548 retval = ksmbd_krb5_authenticate(sess, in_blob, in_len,
070fb21e 1549 out_blob, &out_len);
e2f34481
NJ		 1550 if (retval) {
1551 ksmbd_debug(SMB, "krb5 authentication failed\n");
58090b17 1552 return -EINVAL;
e2f34481
NJ		 1553 }
1554 rsp->SecurityBufferLength = cpu_to_le16(out_len);
1555 inc_rfc1001_len(rsp, out_len - 1);
1556
1557 if ((conn->sign || server_conf.enforced_signing) ||
64b39f4a 1558 (req->SecurityMode & SMB2_NEGOTIATE_SIGNING_REQUIRED))
e2f34481
NJ		 1559 sess->sign = true;
1560
1561 if ((conn->vals->capabilities & SMB2_GLOBAL_CAP_ENCRYPTION) &&
64b39f4a 1562 conn->ops->generate_encryptionkey) {
e2f34481
NJ		 1563 retval = conn->ops->generate_encryptionkey(sess);
1564 if (retval) {
1565 ksmbd_debug(SMB,
070fb21e 1566 "SMB3 encryption key generation failed\n");
58090b17 1567 return -EINVAL;
e2f34481
NJ		 1568 }
1569 sess->enc = true;
1570 rsp->SessionFlags = SMB2_SESSION_FLAG_ENCRYPT_DATA_LE;
1571 sess->sign = false;
1572 }
1573
1574 if (conn->dialect >= SMB30_PROT_ID) {
f5a544e3 1575 chann = lookup_chann_list(sess, conn);
e2f34481
NJ		 1576 if (!chann) {
1577 chann = kmalloc(sizeof(struct channel), GFP_KERNEL);
1578 if (!chann)
1579 return -ENOMEM;
1580
1581 chann->conn = conn;
1582 INIT_LIST_HEAD(&chann->chann_list);
1583 list_add(&chann->chann_list, &sess->ksmbd_chann_list);
1584 }
1585 }
1586
1587 if (conn->ops->generate_signingkey) {
f5a544e3 1588 retval = conn->ops->generate_signingkey(sess, conn);
e2f34481 1589 if (retval) {
64b39f4a 1590 ksmbd_debug(SMB, "SMB3 signing key generation failed\n");
58090b17 1591 return -EINVAL;
e2f34481
NJ		 1592 }
1593 }
1594
51a13873
NJ		 1595 if (!ksmbd_conn_lookup_dialect(conn)) {
1596 pr_err("fail to verify the dialect\n");
1597 return -ENOENT;
e2f34481
NJ		 1598 }
1599 return 0;
1600}
1601#else
1602static int krb5_authenticate(struct ksmbd_work *work)
1603{
1604 return -EOPNOTSUPP;
1605}
1606#endif
1607
1608int smb2_sess_setup(struct ksmbd_work *work)
1609{
1610 struct ksmbd_conn *conn = work->conn;
e5066499
NJ		 1611 struct smb2_sess_setup_req *req = work->request_buf;
1612 struct smb2_sess_setup_rsp *rsp = work->response_buf;
e2f34481
NJ		 1613 struct ksmbd_session *sess;
1614 struct negotiate_message *negblob;
1615 int rc = 0;
1616
1617 ksmbd_debug(SMB, "Received request for session setup\n");
1618
1619 rsp->StructureSize = cpu_to_le16(9);
1620 rsp->SessionFlags = 0;
1621 rsp->SecurityBufferOffset = cpu_to_le16(72);
1622 rsp->SecurityBufferLength = 0;
1623 inc_rfc1001_len(rsp, 9);
1624
1625 if (!req->hdr.SessionId) {
1626 sess = ksmbd_smb2_session_create();
1627 if (!sess) {
1628 rc = -ENOMEM;
1629 goto out_err;
1630 }
1631 rsp->hdr.SessionId = cpu_to_le64(sess->id);
1632 ksmbd_session_register(conn, sess);
f5a544e3
NJ		 1633 } else if (conn->dialect >= SMB30_PROT_ID &&
1634 (server_conf.flags & KSMBD_GLOBAL_FLAG_SMB3_MULTICHANNEL) &&
1635 req->Flags & SMB2_SESSION_REQ_FLAG_BINDING) {
1636 u64 sess_id = le64_to_cpu(req->hdr.SessionId);
1637
1638 sess = ksmbd_session_lookup_slowpath(sess_id);
1639 if (!sess) {
1640 rc = -ENOENT;
1641 goto out_err;
1642 }
1643
1644 if (conn->dialect != sess->conn->dialect) {
1645 rc = -EINVAL;
1646 goto out_err;
1647 }
1648
1649 if (!(req->hdr.Flags & SMB2_FLAGS_SIGNED)) {
1650 rc = -EINVAL;
1651 goto out_err;
1652 }
1653
1654 if (strncmp(conn->ClientGUID, sess->conn->ClientGUID,
1655 SMB2_CLIENT_GUID_SIZE)) {
1656 rc = -ENOENT;
1657 goto out_err;
1658 }
1659
1660 if (sess->state == SMB2_SESSION_IN_PROGRESS) {
1661 rc = -EACCES;
1662 goto out_err;
1663 }
1664
1665 if (sess->state == SMB2_SESSION_EXPIRED) {
1666 rc = -EFAULT;
1667 goto out_err;
1668 }
1669
1670 if (ksmbd_session_lookup(conn, sess_id)) {
1671 rc = -EACCES;
1672 goto out_err;
1673 }
1674
1675 conn->binding = true;
1676 } else if ((conn->dialect < SMB30_PROT_ID ||
1677 server_conf.flags & KSMBD_GLOBAL_FLAG_SMB3_MULTICHANNEL) &&
1678 (req->Flags & SMB2_SESSION_REQ_FLAG_BINDING)) {
4951a84f 1679 sess = NULL;
f5a544e3
NJ		 1680 rc = -EACCES;
1681 goto out_err;
e2f34481
NJ		 1682 } else {
1683 sess = ksmbd_session_lookup(conn,
070fb21e 1684 le64_to_cpu(req->hdr.SessionId));
e2f34481
NJ		 1685 if (!sess) {
1686 rc = -ENOENT;
e2f34481
NJ		 1687 goto out_err;
1688 }
1689 }
1690 work->sess = sess;
1691
1692 if (sess->state == SMB2_SESSION_EXPIRED)
1693 sess->state = SMB2_SESSION_IN_PROGRESS;
1694
1695 negblob = (struct negotiate_message *)((char *)&req->hdr.ProtocolId +
1696 le16_to_cpu(req->SecurityBufferOffset));
1697
1698 if (decode_negotiation_token(work, negblob) == 0) {
1699 if (conn->mechToken)
1700 negblob = (struct negotiate_message *)conn->mechToken;
1701 }
1702
1703 if (server_conf.auth_mechs & conn->auth_mechs) {
f5a544e3
NJ		 1704 rc = generate_preauth_hash(work);
1705 if (rc)
1706 goto out_err;
1707
e2f34481
NJ		 1708 if (conn->preferred_auth_mech &
1709 (KSMBD_AUTH_KRB5 | KSMBD_AUTH_MSKRB5)) {
e2f34481
NJ		 1710 rc = krb5_authenticate(work);
1711 if (rc) {
f5a544e3 1712 rc = -EINVAL;
e2f34481
NJ		 1713 goto out_err;
1714 }
1715
1716 ksmbd_conn_set_good(work);
1717 sess->state = SMB2_SESSION_VALID;
822bc8ea 1718 kfree(sess->Preauth_HashValue);
e2f34481
NJ		 1719 sess->Preauth_HashValue = NULL;
1720 } else if (conn->preferred_auth_mech == KSMBD_AUTH_NTLMSSP) {
e2f34481
NJ		 1721 if (negblob->MessageType == NtLmNegotiate) {
1722 rc = ntlm_negotiate(work, negblob);
1723 if (rc)
1724 goto out_err;
1725 rsp->hdr.Status =
1726 STATUS_MORE_PROCESSING_REQUIRED;
1727 /*
1728 * Note: here total size -1 is done as an
1729 * adjustment for 0 size blob
1730 */
64b39f4a 1731 inc_rfc1001_len(rsp, le16_to_cpu(rsp->SecurityBufferLength) - 1);
e2f34481
NJ		 1732
1733 } else if (negblob->MessageType == NtLmAuthenticate) {
1734 rc = ntlm_authenticate(work);
1735 if (rc)
1736 goto out_err;
1737
1738 ksmbd_conn_set_good(work);
1739 sess->state = SMB2_SESSION_VALID;
f5a544e3
NJ		 1740 if (conn->binding) {
1741 struct preauth_session *preauth_sess;
1742
1743 preauth_sess =
1744 ksmbd_preauth_session_lookup(conn, sess->id);
1745 if (preauth_sess) {
1746 list_del(&preauth_sess->preauth_entry);
1747 kfree(preauth_sess);
1748 }
1749 }
822bc8ea 1750 kfree(sess->Preauth_HashValue);
e2f34481
NJ		 1751 sess->Preauth_HashValue = NULL;
1752 }
1753 } else {
1754 /* TODO: need one more negotiation */
bde1694a 1755 pr_err("Not support the preferred authentication\n");
e2f34481 1756 rc = -EINVAL;
e2f34481
NJ		 1757 }
1758 } else {
bde1694a 1759 pr_err("Not support authentication\n");
e2f34481 1760 rc = -EINVAL;
e2f34481
NJ		 1761 }
1762
1763out_err:
f5a544e3
NJ		 1764 if (rc == -EINVAL)
1765 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
1766 else if (rc == -ENOENT)
1767 rsp->hdr.Status = STATUS_USER_SESSION_DELETED;
1768 else if (rc == -EACCES)
1769 rsp->hdr.Status = STATUS_REQUEST_NOT_ACCEPTED;
1770 else if (rc == -EFAULT)
1771 rsp->hdr.Status = STATUS_NETWORK_SESSION_EXPIRED;
58090b17
NJ		 1772 else if (rc == -ENOMEM)
1773 rsp->hdr.Status = STATUS_INSUFFICIENT_RESOURCES;
f5a544e3
NJ		 1774 else if (rc)
1775 rsp->hdr.Status = STATUS_LOGON_FAILURE;
1776
e2f34481
NJ		 1777 if (conn->use_spnego && conn->mechToken) {
1778 kfree(conn->mechToken);
1779 conn->mechToken = NULL;
1780 }
1781
1782 if (rc < 0 && sess) {
1783 ksmbd_session_destroy(sess);
1784 work->sess = NULL;
1785 }
1786
1787 return rc;
1788}
1789
1790/**
1791 * smb2_tree_connect() - handler for smb2 tree connect command
1792 * @work: smb work containing smb request buffer
1793 *
1794 * Return: 0 on success, otherwise error
1795 */
1796int smb2_tree_connect(struct ksmbd_work *work)
1797{
1798 struct ksmbd_conn *conn = work->conn;
e5066499
NJ		 1799 struct smb2_tree_connect_req *req = work->request_buf;
1800 struct smb2_tree_connect_rsp *rsp = work->response_buf;
e2f34481
NJ		 1801 struct ksmbd_session *sess = work->sess;
1802 char *treename = NULL, *name = NULL;
1803 struct ksmbd_tree_conn_status status;
1804 struct ksmbd_share_config *share;
1805 int rc = -EINVAL;
1806
1807 treename = smb_strndup_from_utf16(req->Buffer,
070fb21e
NJ		 1808 le16_to_cpu(req->PathLength), true,
1809 conn->local_nls);
e2f34481 1810 if (IS_ERR(treename)) {
bde1694a 1811 pr_err("treename is NULL\n");
e2f34481
NJ		 1812 status.ret = KSMBD_TREE_CONN_STATUS_ERROR;
1813 goto out_err1;
1814 }
1815
36ba3866 1816 name = ksmbd_extract_sharename(treename);
e2f34481
NJ		 1817 if (IS_ERR(name)) {
1818 status.ret = KSMBD_TREE_CONN_STATUS_ERROR;
1819 goto out_err1;
1820 }
1821
1822 ksmbd_debug(SMB, "tree connect request for tree %s treename %s\n",
070fb21e 1823 name, treename);
e2f34481
NJ		 1824
1825 status = ksmbd_tree_conn_connect(sess, name);
1826 if (status.ret == KSMBD_TREE_CONN_STATUS_OK)
1827 rsp->hdr.Id.SyncId.TreeId = cpu_to_le32(status.tree_conn->id);
1828 else
1829 goto out_err1;
1830
1831 share = status.tree_conn->share_conf;
1832 if (test_share_config_flag(share, KSMBD_SHARE_FLAG_PIPE)) {
1833 ksmbd_debug(SMB, "IPC share path request\n");
1834 rsp->ShareType = SMB2_SHARE_TYPE_PIPE;
1835 rsp->MaximalAccess = FILE_READ_DATA_LE | FILE_READ_EA_LE |
1836 FILE_EXECUTE_LE | FILE_READ_ATTRIBUTES_LE |
1837 FILE_DELETE_LE | FILE_READ_CONTROL_LE |
1838 FILE_WRITE_DAC_LE | FILE_WRITE_OWNER_LE |
1839 FILE_SYNCHRONIZE_LE;
1840 } else {
1841 rsp->ShareType = SMB2_SHARE_TYPE_DISK;
1842 rsp->MaximalAccess = FILE_READ_DATA_LE | FILE_READ_EA_LE |
1843 FILE_EXECUTE_LE | FILE_READ_ATTRIBUTES_LE;
1844 if (test_tree_conn_flag(status.tree_conn,
1845 KSMBD_TREE_CONN_FLAG_WRITABLE)) {
1846 rsp->MaximalAccess |= FILE_WRITE_DATA_LE |
1847 FILE_APPEND_DATA_LE | FILE_WRITE_EA_LE |
3aefd54d
WJ		 1848 FILE_DELETE_LE | FILE_WRITE_ATTRIBUTES_LE |
1849 FILE_DELETE_CHILD_LE | FILE_READ_CONTROL_LE |
1850 FILE_WRITE_DAC_LE | FILE_WRITE_OWNER_LE |
1851 FILE_SYNCHRONIZE_LE;
e2f34481
NJ		 1852 }
1853 }
1854
1855 status.tree_conn->maximal_access = le32_to_cpu(rsp->MaximalAccess);
1856 if (conn->posix_ext_supported)
1857 status.tree_conn->posix_extensions = true;
1858
1859out_err1:
1860 rsp->StructureSize = cpu_to_le16(16);
1861 rsp->Capabilities = 0;
1862 rsp->Reserved = 0;
1863 /* default manual caching */
1864 rsp->ShareFlags = SMB2_SHAREFLAG_MANUAL_CACHING;
1865 inc_rfc1001_len(rsp, 16);
1866
1867 if (!IS_ERR(treename))
1868 kfree(treename);
1869 if (!IS_ERR(name))
1870 kfree(name);
1871
1872 switch (status.ret) {
1873 case KSMBD_TREE_CONN_STATUS_OK:
1874 rsp->hdr.Status = STATUS_SUCCESS;
1875 rc = 0;
1876 break;
1877 case KSMBD_TREE_CONN_STATUS_NO_SHARE:
1878 rsp->hdr.Status = STATUS_BAD_NETWORK_PATH;
1879 break;
1880 case -ENOMEM:
1881 case KSMBD_TREE_CONN_STATUS_NOMEM:
1882 rsp->hdr.Status = STATUS_NO_MEMORY;
1883 break;
1884 case KSMBD_TREE_CONN_STATUS_ERROR:
1885 case KSMBD_TREE_CONN_STATUS_TOO_MANY_CONNS:
1886 case KSMBD_TREE_CONN_STATUS_TOO_MANY_SESSIONS:
1887 rsp->hdr.Status = STATUS_ACCESS_DENIED;
1888 break;
1889 case -EINVAL:
1890 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
1891 break;
1892 default:
1893 rsp->hdr.Status = STATUS_ACCESS_DENIED;
1894 }
1895
1896 return rc;
1897}
1898
1899/**
1900 * smb2_create_open_flags() - convert smb open flags to unix open flags
1901 * @file_present: is file already present
1902 * @access: file access flags
1903 * @disposition: file disposition flags
6c5e36d1 1904 * @may_flags: set with MAY_ flags
e2f34481
NJ		 1905 *
1906 * Return: file open flags
1907 */
1908static int smb2_create_open_flags(bool file_present, __le32 access,
6c5e36d1
HL		 1909 __le32 disposition,
1910 int *may_flags)
e2f34481
NJ		 1911{
1912 int oflags = O_NONBLOCK | O_LARGEFILE;
1913
1914 if (access & FILE_READ_DESIRED_ACCESS_LE &&
6c5e36d1 1915 access & FILE_WRITE_DESIRE_ACCESS_LE) {
e2f34481 1916 oflags |= O_RDWR;
6c5e36d1
HL		 1917 *may_flags = MAY_OPEN | MAY_READ | MAY_WRITE;
1918 } else if (access & FILE_WRITE_DESIRE_ACCESS_LE) {
e2f34481 1919 oflags |= O_WRONLY;
6c5e36d1
HL		 1920 *may_flags = MAY_OPEN | MAY_WRITE;
1921 } else {
e2f34481 1922 oflags |= O_RDONLY;
6c5e36d1
HL		 1923 *may_flags = MAY_OPEN | MAY_READ;
1924 }
e2f34481
NJ		 1925
1926 if (access == FILE_READ_ATTRIBUTES_LE)
1927 oflags |= O_PATH;
1928
1929 if (file_present) {
1930 switch (disposition & FILE_CREATE_MASK_LE) {
1931 case FILE_OPEN_LE:
1932 case FILE_CREATE_LE:
1933 break;
1934 case FILE_SUPERSEDE_LE:
1935 case FILE_OVERWRITE_LE:
1936 case FILE_OVERWRITE_IF_LE:
1937 oflags |= O_TRUNC;
1938 break;
1939 default:
1940 break;
1941 }
1942 } else {
1943 switch (disposition & FILE_CREATE_MASK_LE) {
1944 case FILE_SUPERSEDE_LE:
1945 case FILE_CREATE_LE:
1946 case FILE_OPEN_IF_LE:
1947 case FILE_OVERWRITE_IF_LE:
1948 oflags |= O_CREAT;
1949 break;
1950 case FILE_OPEN_LE:
1951 case FILE_OVERWRITE_LE:
1952 oflags &= ~O_CREAT;
1953 break;
1954 default:
1955 break;
1956 }
1957 }
6c5e36d1 1958
e2f34481
NJ		 1959 return oflags;
1960}
1961
1962/**
1963 * smb2_tree_disconnect() - handler for smb tree connect request
1964 * @work: smb work containing request buffer
1965 *
1966 * Return: 0
1967 */
1968int smb2_tree_disconnect(struct ksmbd_work *work)
1969{
e5066499 1970 struct smb2_tree_disconnect_rsp *rsp = work->response_buf;
e2f34481
NJ		 1971 struct ksmbd_session *sess = work->sess;
1972 struct ksmbd_tree_connect *tcon = work->tcon;
1973
1974 rsp->StructureSize = cpu_to_le16(4);
1975 inc_rfc1001_len(rsp, 4);
1976
1977 ksmbd_debug(SMB, "request\n");
1978
1979 if (!tcon) {
e5066499 1980 struct smb2_tree_disconnect_req *req = work->request_buf;
e2f34481
NJ		 1981
1982 ksmbd_debug(SMB, "Invalid tid %d\n", req->hdr.Id.SyncId.TreeId);
1983 rsp->hdr.Status = STATUS_NETWORK_NAME_DELETED;
1984 smb2_set_err_rsp(work);
1985 return 0;
1986 }
1987
1988 ksmbd_close_tree_conn_fds(work);
1989 ksmbd_tree_conn_disconnect(sess, tcon);
1990 return 0;
1991}
1992
1993/**
1994 * smb2_session_logoff() - handler for session log off request
1995 * @work: smb work containing request buffer
1996 *
1997 * Return: 0
1998 */
1999int smb2_session_logoff(struct ksmbd_work *work)
2000{
2001 struct ksmbd_conn *conn = work->conn;
e5066499 2002 struct smb2_logoff_rsp *rsp = work->response_buf;
e2f34481
NJ		 2003 struct ksmbd_session *sess = work->sess;
2004
2005 rsp->StructureSize = cpu_to_le16(4);
2006 inc_rfc1001_len(rsp, 4);
2007
2008 ksmbd_debug(SMB, "request\n");
2009
2010 /* Got a valid session, set connection state */
2011 WARN_ON(sess->conn != conn);
2012
2013 /* setting CifsExiting here may race with start_tcp_sess */
2014 ksmbd_conn_set_need_reconnect(work);
2015 ksmbd_close_session_fds(work);
2016 ksmbd_conn_wait_idle(conn);
2017
2018 if (ksmbd_tree_conn_session_logoff(sess)) {
e5066499 2019 struct smb2_logoff_req *req = work->request_buf;
e2f34481
NJ		 2020
2021 ksmbd_debug(SMB, "Invalid tid %d\n", req->hdr.Id.SyncId.TreeId);
2022 rsp->hdr.Status = STATUS_NETWORK_NAME_DELETED;
2023 smb2_set_err_rsp(work);
2024 return 0;
2025 }
2026
2027 ksmbd_destroy_file_table(&sess->file_table);
2028 sess->state = SMB2_SESSION_EXPIRED;
2029
2030 ksmbd_free_user(sess->user);
2031 sess->user = NULL;
2032
2033 /* let start_tcp_sess free connection info now */
2034 ksmbd_conn_set_need_negotiate(work);
2035 return 0;
2036}
2037
2038/**
2039 * create_smb2_pipe() - create IPC pipe
2040 * @work: smb work containing request buffer
2041 *
2042 * Return: 0 on success, otherwise error
2043 */
2044static noinline int create_smb2_pipe(struct ksmbd_work *work)
2045{
e5066499
NJ		 2046 struct smb2_create_rsp *rsp = work->response_buf;
2047 struct smb2_create_req *req = work->request_buf;
e2f34481
NJ		 2048 int id;
2049 int err;
2050 char *name;
2051
2052 name = smb_strndup_from_utf16(req->Buffer, le16_to_cpu(req->NameLength),
070fb21e 2053 1, work->conn->local_nls);
e2f34481
NJ		 2054 if (IS_ERR(name)) {
2055 rsp->hdr.Status = STATUS_NO_MEMORY;
2056 err = PTR_ERR(name);
2057 goto out;
2058 }
2059
2060 id = ksmbd_session_rpc_open(work->sess, name);
79caa960 2061 if (id < 0) {
bde1694a 2062 pr_err("Unable to open RPC pipe: %d\n", id);
79caa960
MM		 2063 err = id;
2064 goto out;
2065 }
e2f34481 2066
79caa960 2067 rsp->hdr.Status = STATUS_SUCCESS;
e2f34481
NJ		 2068 rsp->StructureSize = cpu_to_le16(89);
2069 rsp->OplockLevel = SMB2_OPLOCK_LEVEL_NONE;
2070 rsp->Reserved = 0;
2071 rsp->CreateAction = cpu_to_le32(FILE_OPENED);
2072
2073 rsp->CreationTime = cpu_to_le64(0);
2074 rsp->LastAccessTime = cpu_to_le64(0);
2075 rsp->ChangeTime = cpu_to_le64(0);
2076 rsp->AllocationSize = cpu_to_le64(0);
2077 rsp->EndofFile = cpu_to_le64(0);
2078 rsp->FileAttributes = ATTR_NORMAL_LE;
2079 rsp->Reserved2 = 0;
2080 rsp->VolatileFileId = cpu_to_le64(id);
2081 rsp->PersistentFileId = 0;
2082 rsp->CreateContextsOffset = 0;
2083 rsp->CreateContextsLength = 0;
2084
2085 inc_rfc1001_len(rsp, 88); /* StructureSize - 1*/
2086 kfree(name);
2087 return 0;
2088
2089out:
79caa960
MM		 2090 switch (err) {
2091 case -EINVAL:
2092 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
2093 break;
2094 case -ENOSPC:
2095 case -ENOMEM:
2096 rsp->hdr.Status = STATUS_NO_MEMORY;
2097 break;
2098 }
2099
2100 if (!IS_ERR(name))
2101 kfree(name);
2102
e2f34481
NJ		 2103 smb2_set_err_rsp(work);
2104 return err;
2105}
2106
e2f34481
NJ		 2107/**
2108 * smb2_set_ea() - handler for setting extended attributes using set
2109 * info command
2110 * @eabuf: set info command buffer
9496e268 2111 * @buf_len: set info command buffer length
e2f34481
NJ		 2112 * @path: dentry path for get ea
2113 *
2114 * Return: 0 on success, otherwise error
2115 */
9496e268
NJ		 2116static int smb2_set_ea(struct smb2_ea_info *eabuf, unsigned int buf_len,
2117 struct path *path)
e2f34481 2118{
465d7204 2119 struct user_namespace *user_ns = mnt_user_ns(path->mnt);
e2f34481
NJ		 2120 char *attr_name = NULL, *value;
2121 int rc = 0;
9496e268
NJ		 2122 unsigned int next = 0;
2123
2124 if (buf_len < sizeof(struct smb2_ea_info) + eabuf->EaNameLength +
2125 le16_to_cpu(eabuf->EaValueLength))
2126 return -EINVAL;
e2f34481
NJ		 2127
2128 attr_name = kmalloc(XATTR_NAME_MAX + 1, GFP_KERNEL);
2129 if (!attr_name)
2130 return -ENOMEM;
2131
2132 do {
2133 if (!eabuf->EaNameLength)
2134 goto next;
2135
2136 ksmbd_debug(SMB,
070fb21e
NJ		 2137 "name : <%s>, name_len : %u, value_len : %u, next : %u\n",
2138 eabuf->name, eabuf->EaNameLength,
2139 le16_to_cpu(eabuf->EaValueLength),
2140 le32_to_cpu(eabuf->NextEntryOffset));
e2f34481
NJ		 2141
2142 if (eabuf->EaNameLength >
070fb21e 2143 (XATTR_NAME_MAX - XATTR_USER_PREFIX_LEN)) {
e2f34481
NJ		 2144 rc = -EINVAL;
2145 break;
2146 }
2147
2148 memcpy(attr_name, XATTR_USER_PREFIX, XATTR_USER_PREFIX_LEN);
2149 memcpy(&attr_name[XATTR_USER_PREFIX_LEN], eabuf->name,
070fb21e 2150 eabuf->EaNameLength);
e2f34481
NJ		 2151 attr_name[XATTR_USER_PREFIX_LEN + eabuf->EaNameLength] = '\0';
2152 value = (char *)&eabuf->name + eabuf->EaNameLength + 1;
2153
2154 if (!eabuf->EaValueLength) {
465d7204 2155 rc = ksmbd_vfs_casexattr_len(user_ns,
af34983e 2156 path->dentry,
e2f34481
NJ		 2157 attr_name,
2158 XATTR_USER_PREFIX_LEN +
2159 eabuf->EaNameLength);
2160
2161 /* delete the EA only when it exits */
2162 if (rc > 0) {
465d7204 2163 rc = ksmbd_vfs_remove_xattr(user_ns,
af34983e 2164 path->dentry,
e2f34481
NJ		 2165 attr_name);
2166
2167 if (rc < 0) {
2168 ksmbd_debug(SMB,
070fb21e
NJ		 2169 "remove xattr failed(%d)\n",
2170 rc);
e2f34481
NJ		 2171 break;
2172 }
2173 }
2174
2175 /* if the EA doesn't exist, just do nothing. */
2176 rc = 0;
2177 } else {
465d7204 2178 rc = ksmbd_vfs_setxattr(user_ns,
af34983e 2179 path->dentry, attr_name, value,
070fb21e 2180 le16_to_cpu(eabuf->EaValueLength), 0);
e2f34481
NJ		 2181 if (rc < 0) {
2182 ksmbd_debug(SMB,
070fb21e
NJ		 2183 "ksmbd_vfs_setxattr is failed(%d)\n",
2184 rc);
e2f34481
NJ		 2185 break;
2186 }
2187 }
2188
2189next:
2190 next = le32_to_cpu(eabuf->NextEntryOffset);
9496e268
NJ		 2191 if (next == 0 || buf_len < next)
2192 break;
2193 buf_len -= next;
e2f34481 2194 eabuf = (struct smb2_ea_info *)((char *)eabuf + next);
9496e268
NJ		 2195 if (next < (u32)eabuf->EaNameLength + le16_to_cpu(eabuf->EaValueLength))
2196 break;
2197
e2f34481
NJ		 2198 } while (next != 0);
2199
2200 kfree(attr_name);
2201 return rc;
2202}
2203
e2f34481 2204static noinline int smb2_set_stream_name_xattr(struct path *path,
070fb21e
NJ		 2205 struct ksmbd_file *fp,
2206 char *stream_name, int s_type)
e2f34481 2207{
465d7204 2208 struct user_namespace *user_ns = mnt_user_ns(path->mnt);
e2f34481
NJ		 2209 size_t xattr_stream_size;
2210 char *xattr_stream_name;
2211 int rc;
2212
2213 rc = ksmbd_vfs_xattr_stream_name(stream_name,
2214 &xattr_stream_name,
2215 &xattr_stream_size,
2216 s_type);
2217 if (rc)
2218 return rc;
2219
2220 fp->stream.name = xattr_stream_name;
2221 fp->stream.size = xattr_stream_size;
2222
2223 /* Check if there is stream prefix in xattr space */
465d7204 2224 rc = ksmbd_vfs_casexattr_len(user_ns,
af34983e 2225 path->dentry,
e2f34481
NJ		 2226 xattr_stream_name,
2227 xattr_stream_size);
2228 if (rc >= 0)
2229 return 0;
2230
2231 if (fp->cdoption == FILE_OPEN_LE) {
2232 ksmbd_debug(SMB, "XATTR stream name lookup failed: %d\n", rc);
2233 return -EBADF;
2234 }
2235
465d7204
HL		 2236 rc = ksmbd_vfs_setxattr(user_ns, path->dentry,
2237 xattr_stream_name, NULL, 0, 0);
e2f34481 2238 if (rc < 0)
bde1694a 2239 pr_err("Failed to store XATTR stream name :%d\n", rc);
e2f34481
NJ		 2240 return 0;
2241}
2242
ef24c962 2243static int smb2_remove_smb_xattrs(struct path *path)
e2f34481 2244{
465d7204 2245 struct user_namespace *user_ns = mnt_user_ns(path->mnt);
e2f34481
NJ		 2246 char *name, *xattr_list = NULL;
2247 ssize_t xattr_list_len;
2248 int err = 0;
2249
ef24c962 2250 xattr_list_len = ksmbd_vfs_listxattr(path->dentry, &xattr_list);
e2f34481
NJ		 2251 if (xattr_list_len < 0) {
2252 goto out;
2253 } else if (!xattr_list_len) {
2254 ksmbd_debug(SMB, "empty xattr in the file\n");
2255 goto out;
2256 }
2257
2258 for (name = xattr_list; name - xattr_list < xattr_list_len;
2259 name += strlen(name) + 1) {
2260 ksmbd_debug(SMB, "%s, len %zd\n", name, strlen(name));
2261
2262 if (strncmp(name, XATTR_USER_PREFIX, XATTR_USER_PREFIX_LEN) &&
64b39f4a
NJ		 2263 strncmp(&name[XATTR_USER_PREFIX_LEN], DOS_ATTRIBUTE_PREFIX,
2264 DOS_ATTRIBUTE_PREFIX_LEN) &&
2265 strncmp(&name[XATTR_USER_PREFIX_LEN], STREAM_PREFIX, STREAM_PREFIX_LEN))
e2f34481
NJ		 2266 continue;
2267
465d7204 2268 err = ksmbd_vfs_remove_xattr(user_ns, path->dentry, name);
e2f34481
NJ		 2269 if (err)
2270 ksmbd_debug(SMB, "remove xattr failed : %s\n", name);
2271 }
2272out:
79f6b11a 2273 kvfree(xattr_list);
e2f34481
NJ		 2274 return err;
2275}
2276
2277static int smb2_create_truncate(struct path *path)
2278{
2279 int rc = vfs_truncate(path, 0);
2280
2281 if (rc) {
bde1694a 2282 pr_err("vfs_truncate failed, rc %d\n", rc);
e2f34481
NJ		 2283 return rc;
2284 }
2285
ef24c962 2286 rc = smb2_remove_smb_xattrs(path);
e2f34481
NJ		 2287 if (rc == -EOPNOTSUPP)
2288 rc = 0;
2289 if (rc)
2290 ksmbd_debug(SMB,
070fb21e
NJ		 2291 "ksmbd_truncate_stream_name_xattr failed, rc %d\n",
2292 rc);
e2f34481
NJ		 2293 return rc;
2294}
2295
64b39f4a 2296static void smb2_new_xattrs(struct ksmbd_tree_connect *tcon, struct path *path,
070fb21e 2297 struct ksmbd_file *fp)
e2f34481
NJ		 2298{
2299 struct xattr_dos_attrib da = {0};
2300 int rc;
2301
2302 if (!test_share_config_flag(tcon->share_conf,
2303 KSMBD_SHARE_FLAG_STORE_DOS_ATTRS))
2304 return;
2305
2306 da.version = 4;
2307 da.attr = le32_to_cpu(fp->f_ci->m_fattr);
2308 da.itime = da.create_time = fp->create_time;
2309 da.flags = XATTR_DOSINFO_ATTRIB | XATTR_DOSINFO_CREATE_TIME |
2310 XATTR_DOSINFO_ITIME;
2311
af34983e
HL		 2312 rc = ksmbd_vfs_set_dos_attrib_xattr(mnt_user_ns(path->mnt),
2313 path->dentry, &da);
e2f34481
NJ		 2314 if (rc)
2315 ksmbd_debug(SMB, "failed to store file attribute into xattr\n");
2316}
2317
2318static void smb2_update_xattrs(struct ksmbd_tree_connect *tcon,
070fb21e 2319 struct path *path, struct ksmbd_file *fp)
e2f34481
NJ		 2320{
2321 struct xattr_dos_attrib da;
2322 int rc;
2323
2324 fp->f_ci->m_fattr &= ~(ATTR_HIDDEN_LE | ATTR_SYSTEM_LE);
2325
2326 /* get FileAttributes from XATTR_NAME_DOS_ATTRIBUTE */
2327 if (!test_share_config_flag(tcon->share_conf,
64b39f4a 2328 KSMBD_SHARE_FLAG_STORE_DOS_ATTRS))
e2f34481
NJ		 2329 return;
2330
af34983e
HL		 2331 rc = ksmbd_vfs_get_dos_attrib_xattr(mnt_user_ns(path->mnt),
2332 path->dentry, &da);
e2f34481
NJ		 2333 if (rc > 0) {
2334 fp->f_ci->m_fattr = cpu_to_le32(da.attr);
2335 fp->create_time = da.create_time;
2336 fp->itime = da.itime;
2337 }
2338}
2339
64b39f4a 2340static int smb2_creat(struct ksmbd_work *work, struct path *path, char *name,
070fb21e 2341 int open_flags, umode_t posix_mode, bool is_dir)
e2f34481
NJ		 2342{
2343 struct ksmbd_tree_connect *tcon = work->tcon;
2344 struct ksmbd_share_config *share = tcon->share_conf;
2345 umode_t mode;
2346 int rc;
2347
2348 if (!(open_flags & O_CREAT))
2349 return -EBADF;
2350
2351 ksmbd_debug(SMB, "file does not exist, so creating\n");
2352 if (is_dir == true) {
2353 ksmbd_debug(SMB, "creating directory\n");
2354
2355 mode = share_config_directory_mode(share, posix_mode);
2356 rc = ksmbd_vfs_mkdir(work, name, mode);
2357 if (rc)
2358 return rc;
2359 } else {
2360 ksmbd_debug(SMB, "creating regular file\n");
2361
2362 mode = share_config_create_mode(share, posix_mode);
2363 rc = ksmbd_vfs_create(work, name, mode);
2364 if (rc)
2365 return rc;
2366 }
2367
265fd199 2368 rc = ksmbd_vfs_kern_path(work, name, 0, path, 0);
e2f34481 2369 if (rc) {
bde1694a
NJ		 2370 pr_err("cannot get linux path (%s), err = %d\n",
2371 name, rc);
e2f34481
NJ		 2372 return rc;
2373 }
2374 return 0;
2375}
2376
2377static int smb2_create_sd_buffer(struct ksmbd_work *work,
070fb21e 2378 struct smb2_create_req *req,
ef24c962 2379 struct path *path)
e2f34481
NJ		 2380{
2381 struct create_context *context;
21dd1fd6 2382 struct create_sd_buf_req *sd_buf;
e2f34481
NJ		 2383
2384 if (!req->CreateContextsOffset)
21dd1fd6 2385 return -ENOENT;
e2f34481
NJ		 2386
2387 /* Parse SD BUFFER create contexts */
2388 context = smb2_find_context_vals(req, SMB2_CREATE_SD_BUFFER);
21dd1fd6
HL		 2389 if (!context)
2390 return -ENOENT;
2391 else if (IS_ERR(context))
2392 return PTR_ERR(context);
e2f34481 2393
21dd1fd6
HL		 2394 ksmbd_debug(SMB,
2395 "Set ACLs using SMB2_CREATE_SD_BUFFER context\n");
2396 sd_buf = (struct create_sd_buf_req *)context;
8f77150c
HL		 2397 if (le16_to_cpu(context->DataOffset) +
2398 le32_to_cpu(context->DataLength) <
2399 sizeof(struct create_sd_buf_req))
2400 return -EINVAL;
21dd1fd6
HL		 2401 return set_info_sec(work->conn, work->tcon, path, &sd_buf->ntsd,
2402 le32_to_cpu(sd_buf->ccontext.DataLength), true);
e2f34481
NJ		 2403}
2404
43205ca7
CB		 2405static void ksmbd_acls_fattr(struct smb_fattr *fattr,
2406 struct user_namespace *mnt_userns,
2407 struct inode *inode)
3d47e546 2408{
43205ca7
CB		 2409 fattr->cf_uid = i_uid_into_mnt(mnt_userns, inode);
2410 fattr->cf_gid = i_gid_into_mnt(mnt_userns, inode);
3d47e546 2411 fattr->cf_mode = inode->i_mode;
777cad16 2412 fattr->cf_acls = NULL;
3d47e546
NJ		 2413 fattr->cf_dacls = NULL;
2414
777cad16
NJ		 2415 if (IS_ENABLED(CONFIG_FS_POSIX_ACL)) {
2416 fattr->cf_acls = get_acl(inode, ACL_TYPE_ACCESS);
2417 if (S_ISDIR(inode->i_mode))
2418 fattr->cf_dacls = get_acl(inode, ACL_TYPE_DEFAULT);
2419 }
3d47e546
NJ		 2420}
2421
e2f34481
NJ		 2422/**
2423 * smb2_open() - handler for smb file open request
2424 * @work: smb work containing request buffer
2425 *
2426 * Return: 0 on success, otherwise error
2427 */
2428int smb2_open(struct ksmbd_work *work)
2429{
2430 struct ksmbd_conn *conn = work->conn;
2431 struct ksmbd_session *sess = work->sess;
2432 struct ksmbd_tree_connect *tcon = work->tcon;
2433 struct smb2_create_req *req;
2434 struct smb2_create_rsp *rsp, *rsp_org;
2435 struct path path;
2436 struct ksmbd_share_config *share = tcon->share_conf;
2437 struct ksmbd_file *fp = NULL;
2438 struct file *filp = NULL;
465d7204 2439 struct user_namespace *user_ns = NULL;
e2f34481
NJ		 2440 struct kstat stat;
2441 struct create_context *context;
2442 struct lease_ctx_info *lc = NULL;
2443 struct create_ea_buf_req *ea_buf = NULL;
2444 struct oplock_info *opinfo;
2445 __le32 *next_ptr = NULL;
6c5e36d1 2446 int req_op_level = 0, open_flags = 0, may_flags = 0, file_info = 0;
265fd199 2447 int rc = 0;
e2f34481
NJ		 2448 int contxt_cnt = 0, query_disk_id = 0;
2449 int maximal_access_ctxt = 0, posix_ctxt = 0;
2450 int s_type = 0;
2451 int next_off = 0;
2452 char *name = NULL;
2453 char *stream_name = NULL;
2454 bool file_present = false, created = false, already_permitted = false;
e2f34481
NJ		 2455 int share_ret, need_truncate = 0;
2456 u64 time;
2457 umode_t posix_mode = 0;
2458 __le32 daccess, maximal_access = 0;
2459
e5066499 2460 rsp_org = work->response_buf;
e2f34481
NJ		 2461 WORK_BUFFERS(work, req, rsp);
2462
2463 if (req->hdr.NextCommand && !work->next_smb2_rcv_hdr_off &&
64b39f4a 2464 (req->hdr.Flags & SMB2_FLAGS_RELATED_OPERATIONS)) {
e2f34481
NJ		 2465 ksmbd_debug(SMB, "invalid flag in chained command\n");
2466 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
2467 smb2_set_err_rsp(work);
2468 return -EINVAL;
2469 }
2470
2471 if (test_share_config_flag(share, KSMBD_SHARE_FLAG_PIPE)) {
2472 ksmbd_debug(SMB, "IPC pipe create request\n");
2473 return create_smb2_pipe(work);
2474 }
2475
2476 if (req->NameLength) {
2477 if ((req->CreateOptions & FILE_DIRECTORY_FILE_LE) &&
64b39f4a 2478 *(char *)req->Buffer == '\\') {
bde1694a 2479 pr_err("not allow directory name included leading slash\n");
e2f34481
NJ		 2480 rc = -EINVAL;
2481 goto err_out1;
2482 }
2483
2484 name = smb2_get_name(share,
2485 req->Buffer,
2486 le16_to_cpu(req->NameLength),
2487 work->conn->local_nls);
2488 if (IS_ERR(name)) {
2489 rc = PTR_ERR(name);
2490 if (rc != -ENOMEM)
2491 rc = -ENOENT;
8b99f350 2492 name = NULL;
e2f34481
NJ		 2493 goto err_out1;
2494 }
2495
2496 ksmbd_debug(SMB, "converted name = %s\n", name);
2497 if (strchr(name, ':')) {
2498 if (!test_share_config_flag(work->tcon->share_conf,
64b39f4a 2499 KSMBD_SHARE_FLAG_STREAMS)) {
e2f34481
NJ		 2500 rc = -EBADF;
2501 goto err_out1;
2502 }
2503 rc = parse_stream_name(name, &stream_name, &s_type);
2504 if (rc < 0)
2505 goto err_out1;
2506 }
2507
2508 rc = ksmbd_validate_filename(name);
2509 if (rc < 0)
2510 goto err_out1;
2511
2512 if (ksmbd_share_veto_filename(share, name)) {
2513 rc = -ENOENT;
2514 ksmbd_debug(SMB, "Reject open(), vetoed file: %s\n",
070fb21e 2515 name);
e2f34481
NJ		 2516 goto err_out1;
2517 }
2518 } else {
265fd199 2519 name = kstrdup("", GFP_KERNEL);
e2f34481 2520 if (!name) {
e2f34481
NJ		 2521 rc = -ENOMEM;
2522 goto err_out1;
2523 }
e2f34481
NJ		 2524 }
2525
2526 req_op_level = req->RequestedOplockLevel;
73f9dad5 2527 if (req_op_level == SMB2_OPLOCK_LEVEL_LEASE)
e2f34481 2528 lc = parse_lease_state(req);
e2f34481 2529
64b39f4a 2530 if (le32_to_cpu(req->ImpersonationLevel) > le32_to_cpu(IL_DELEGATE_LE)) {
bde1694a
NJ		 2531 pr_err("Invalid impersonationlevel : 0x%x\n",
2532 le32_to_cpu(req->ImpersonationLevel));
e2f34481
NJ		 2533 rc = -EIO;
2534 rsp->hdr.Status = STATUS_BAD_IMPERSONATION_LEVEL;
2535 goto err_out1;
2536 }
2537
2538 if (req->CreateOptions && !(req->CreateOptions & CREATE_OPTIONS_MASK)) {
bde1694a
NJ		 2539 pr_err("Invalid create options : 0x%x\n",
2540 le32_to_cpu(req->CreateOptions));
e2f34481
NJ		 2541 rc = -EINVAL;
2542 goto err_out1;
2543 } else {
e2f34481 2544 if (req->CreateOptions & FILE_SEQUENTIAL_ONLY_LE &&
64b39f4a 2545 req->CreateOptions & FILE_RANDOM_ACCESS_LE)
e2f34481
NJ		 2546 req->CreateOptions = ~(FILE_SEQUENTIAL_ONLY_LE);
2547
070fb21e
NJ		 2548 if (req->CreateOptions &
2549 (FILE_OPEN_BY_FILE_ID_LE | CREATE_TREE_CONNECTION |
2550 FILE_RESERVE_OPFILTER_LE)) {
e2f34481
NJ		 2551 rc = -EOPNOTSUPP;
2552 goto err_out1;
2553 }
2554
2555 if (req->CreateOptions & FILE_DIRECTORY_FILE_LE) {
2556 if (req->CreateOptions & FILE_NON_DIRECTORY_FILE_LE) {
2557 rc = -EINVAL;
2558 goto err_out1;
64b39f4a 2559 } else if (req->CreateOptions & FILE_NO_COMPRESSION_LE) {
e2f34481 2560 req->CreateOptions = ~(FILE_NO_COMPRESSION_LE);
64b39f4a 2561 }
e2f34481
NJ		 2562 }
2563 }
2564
2565 if (le32_to_cpu(req->CreateDisposition) >
070fb21e 2566 le32_to_cpu(FILE_OVERWRITE_IF_LE)) {
bde1694a
NJ		 2567 pr_err("Invalid create disposition : 0x%x\n",
2568 le32_to_cpu(req->CreateDisposition));
e2f34481
NJ		 2569 rc = -EINVAL;
2570 goto err_out1;
2571 }
2572
2573 if (!(req->DesiredAccess & DESIRED_ACCESS_MASK)) {
bde1694a
NJ		 2574 pr_err("Invalid desired access : 0x%x\n",
2575 le32_to_cpu(req->DesiredAccess));
e2f34481
NJ		 2576 rc = -EACCES;
2577 goto err_out1;
2578 }
2579
64b39f4a 2580 if (req->FileAttributes && !(req->FileAttributes & ATTR_MASK_LE)) {
bde1694a
NJ		 2581 pr_err("Invalid file attribute : 0x%x\n",
2582 le32_to_cpu(req->FileAttributes));
e2f34481
NJ		 2583 rc = -EINVAL;
2584 goto err_out1;
2585 }
2586
2587 if (req->CreateContextsOffset) {
2588 /* Parse non-durable handle create contexts */
2589 context = smb2_find_context_vals(req, SMB2_CREATE_EA_BUFFER);
f19b3967
NJ		 2590 if (IS_ERR(context)) {
2591 rc = PTR_ERR(context);
2592 goto err_out1;
2593 } else if (context) {
e2f34481 2594 ea_buf = (struct create_ea_buf_req *)context;
8f77150c
HL		 2595 if (le16_to_cpu(context->DataOffset) +
2596 le32_to_cpu(context->DataLength) <
2597 sizeof(struct create_ea_buf_req)) {
2598 rc = -EINVAL;
2599 goto err_out1;
2600 }
e2f34481
NJ		 2601 if (req->CreateOptions & FILE_NO_EA_KNOWLEDGE_LE) {
2602 rsp->hdr.Status = STATUS_ACCESS_DENIED;
2603 rc = -EACCES;
2604 goto err_out1;
2605 }
2606 }
2607
2608 context = smb2_find_context_vals(req,
070fb21e 2609 SMB2_CREATE_QUERY_MAXIMAL_ACCESS_REQUEST);
f19b3967
NJ		 2610 if (IS_ERR(context)) {
2611 rc = PTR_ERR(context);
2612 goto err_out1;
2613 } else if (context) {
e2f34481 2614 ksmbd_debug(SMB,
070fb21e 2615 "get query maximal access context\n");
e2f34481
NJ		 2616 maximal_access_ctxt = 1;
2617 }
2618
2619 context = smb2_find_context_vals(req,
070fb21e 2620 SMB2_CREATE_TIMEWARP_REQUEST);
f19b3967
NJ		 2621 if (IS_ERR(context)) {
2622 rc = PTR_ERR(context);
2623 goto err_out1;
2624 } else if (context) {
e2f34481
NJ		 2625 ksmbd_debug(SMB, "get timewarp context\n");
2626 rc = -EBADF;
2627 goto err_out1;
2628 }
2629
2630 if (tcon->posix_extensions) {
2631 context = smb2_find_context_vals(req,
070fb21e 2632 SMB2_CREATE_TAG_POSIX);
f19b3967
NJ		 2633 if (IS_ERR(context)) {
2634 rc = PTR_ERR(context);
2635 goto err_out1;
2636 } else if (context) {
e2f34481
NJ		 2637 struct create_posix *posix =
2638 (struct create_posix *)context;
8f77150c
HL		 2639 if (le16_to_cpu(context->DataOffset) +
2640 le32_to_cpu(context->DataLength) <
2641 sizeof(struct create_posix)) {
2642 rc = -EINVAL;
2643 goto err_out1;
2644 }
e2f34481
NJ		 2645 ksmbd_debug(SMB, "get posix context\n");
2646
2647 posix_mode = le32_to_cpu(posix->Mode);
2648 posix_ctxt = 1;
2649 }
2650 }
2651 }
2652
2653 if (ksmbd_override_fsids(work)) {
2654 rc = -ENOMEM;
2655 goto err_out1;
2656 }
2657
265fd199 2658 rc = ksmbd_vfs_kern_path(work, name, LOOKUP_NO_SYMLINKS, &path, 1);
4ea47798
NJ		 2659 if (!rc) {
2660 if (req->CreateOptions & FILE_DELETE_ON_CLOSE_LE) {
e2f34481
NJ		 2661 /*
2662 * If file exists with under flags, return access
2663 * denied error.
2664 */
2665 if (req->CreateDisposition == FILE_OVERWRITE_IF_LE ||
64b39f4a 2666 req->CreateDisposition == FILE_OPEN_IF_LE) {
e2f34481
NJ		 2667 rc = -EACCES;
2668 path_put(&path);
2669 goto err_out;
2670 }
2671
64b39f4a 2672 if (!test_tree_conn_flag(tcon, KSMBD_TREE_CONN_FLAG_WRITABLE)) {
e2f34481 2673 ksmbd_debug(SMB,
070fb21e 2674 "User does not have write permission\n");
e2f34481
NJ		 2675 rc = -EACCES;
2676 path_put(&path);
2677 goto err_out;
2678 }
4ea47798
NJ		 2679 } else if (d_is_symlink(path.dentry)) {
2680 rc = -EACCES;
2681 path_put(&path);
2682 goto err_out;
e2f34481
NJ		 2683 }
2684 }
2685
2686 if (rc) {
265fd199 2687 if (rc != -ENOENT)
e2f34481 2688 goto err_out;
e2f34481 2689 ksmbd_debug(SMB, "can not get linux path for %s, rc = %d\n",
070fb21e 2690 name, rc);
e2f34481
NJ		 2691 rc = 0;
2692 } else {
2693 file_present = true;
465d7204
HL		 2694 user_ns = mnt_user_ns(path.mnt);
2695 generic_fillattr(user_ns, d_inode(path.dentry), &stat);
e2f34481
NJ		 2696 }
2697 if (stream_name) {
2698 if (req->CreateOptions & FILE_DIRECTORY_FILE_LE) {
2699 if (s_type == DATA_STREAM) {
2700 rc = -EIO;
2701 rsp->hdr.Status = STATUS_NOT_A_DIRECTORY;
2702 }
2703 } else {
2704 if (S_ISDIR(stat.mode) && s_type == DATA_STREAM) {
2705 rc = -EIO;
2706 rsp->hdr.Status = STATUS_FILE_IS_A_DIRECTORY;
2707 }
2708 }
2709
2710 if (req->CreateOptions & FILE_DIRECTORY_FILE_LE &&
64b39f4a 2711 req->FileAttributes & ATTR_NORMAL_LE) {
e2f34481
NJ		 2712 rsp->hdr.Status = STATUS_NOT_A_DIRECTORY;
2713 rc = -EIO;
2714 }
2715
2716 if (rc < 0)
2717 goto err_out;
2718 }
2719
64b39f4a
NJ		 2720 if (file_present && req->CreateOptions & FILE_NON_DIRECTORY_FILE_LE &&
2721 S_ISDIR(stat.mode) && !(req->CreateOptions & FILE_DELETE_ON_CLOSE_LE)) {
e2f34481 2722 ksmbd_debug(SMB, "open() argument is a directory: %s, %x\n",
070fb21e 2723 name, req->CreateOptions);
e2f34481
NJ		 2724 rsp->hdr.Status = STATUS_FILE_IS_A_DIRECTORY;
2725 rc = -EIO;
2726 goto err_out;
2727 }
2728
2729 if (file_present && (req->CreateOptions & FILE_DIRECTORY_FILE_LE) &&
64b39f4a
NJ		 2730 !(req->CreateDisposition == FILE_CREATE_LE) &&
2731 !S_ISDIR(stat.mode)) {
e2f34481
NJ		 2732 rsp->hdr.Status = STATUS_NOT_A_DIRECTORY;
2733 rc = -EIO;
2734 goto err_out;
2735 }
2736
2737 if (!stream_name && file_present &&
64b39f4a 2738 req->CreateDisposition == FILE_CREATE_LE) {
e2f34481
NJ		 2739 rc = -EEXIST;
2740 goto err_out;
2741 }
2742
e2f34481
NJ		 2743 daccess = smb_map_generic_desired_access(req->DesiredAccess);
2744
2745 if (file_present && !(req->CreateOptions & FILE_DELETE_ON_CLOSE_LE)) {
ef24c962 2746 rc = smb_check_perm_dacl(conn, &path, &daccess,
070fb21e 2747 sess->user->uid);
e2f34481
NJ		 2748 if (rc)
2749 goto err_out;
2750 }
2751
2752 if (daccess & FILE_MAXIMAL_ACCESS_LE) {
2753 if (!file_present) {
2754 daccess = cpu_to_le32(GENERIC_ALL_FLAGS);
2755 } else {
465d7204 2756 rc = ksmbd_vfs_query_maximal_access(user_ns,
af34983e 2757 path.dentry,
e2f34481
NJ		 2758 &daccess);
2759 if (rc)
2760 goto err_out;
2761 already_permitted = true;
2762 }
2763 maximal_access = daccess;
2764 }
2765
070fb21e 2766 open_flags = smb2_create_open_flags(file_present, daccess,
6c5e36d1
HL		 2767 req->CreateDisposition,
2768 &may_flags);
e2f34481
NJ		 2769
2770 if (!test_tree_conn_flag(tcon, KSMBD_TREE_CONN_FLAG_WRITABLE)) {
2771 if (open_flags & O_CREAT) {
2772 ksmbd_debug(SMB,
070fb21e 2773 "User does not have write permission\n");
e2f34481
NJ		 2774 rc = -EACCES;
2775 goto err_out;
2776 }
2777 }
2778
2779 /*create file if not present */
2780 if (!file_present) {
2781 rc = smb2_creat(work, &path, name, open_flags, posix_mode,
070fb21e 2782 req->CreateOptions & FILE_DIRECTORY_FILE_LE);
d337a44e
MM		 2783 if (rc) {
2784 if (rc == -ENOENT) {
2785 rc = -EIO;
2786 rsp->hdr.Status = STATUS_OBJECT_PATH_NOT_FOUND;
2787 }
e2f34481 2788 goto err_out;
d337a44e 2789 }
e2f34481
NJ		 2790
2791 created = true;
465d7204 2792 user_ns = mnt_user_ns(path.mnt);
e2f34481 2793 if (ea_buf) {
9496e268
NJ		 2794 if (le32_to_cpu(ea_buf->ccontext.DataLength) <
2795 sizeof(struct smb2_ea_info)) {
2796 rc = -EINVAL;
2797 goto err_out;
2798 }
2799
2800 rc = smb2_set_ea(&ea_buf->ea,
2801 le32_to_cpu(ea_buf->ccontext.DataLength),
2802 &path);
e2f34481
NJ		 2803 if (rc == -EOPNOTSUPP)
2804 rc = 0;
2805 else if (rc)
2806 goto err_out;
2807 }
2808 } else if (!already_permitted) {
e2f34481
NJ		 2809 /* FILE_READ_ATTRIBUTE is allowed without inode_permission,
2810 * because execute(search) permission on a parent directory,
2811 * is already granted.
2812 */
64b39f4a 2813 if (daccess & ~(FILE_READ_ATTRIBUTES_LE | FILE_READ_CONTROL_LE)) {
465d7204 2814 rc = inode_permission(user_ns,
6c5e36d1
HL		 2815 d_inode(path.dentry),
2816 may_flags);
ff1d5727 2817 if (rc)
e2f34481 2818 goto err_out;
6c5e36d1
HL		 2819
2820 if ((daccess & FILE_DELETE_LE) ||
2821 (req->CreateOptions & FILE_DELETE_ON_CLOSE_LE)) {
465d7204 2822 rc = ksmbd_vfs_may_delete(user_ns,
af34983e 2823 path.dentry);
6c5e36d1
HL		 2824 if (rc)
2825 goto err_out;
2826 }
e2f34481
NJ		 2827 }
2828 }
2829
2830 rc = ksmbd_query_inode_status(d_inode(path.dentry->d_parent));
2831 if (rc == KSMBD_INODE_STATUS_PENDING_DELETE) {
2832 rc = -EBUSY;
2833 goto err_out;
2834 }
2835
2836 rc = 0;
2837 filp = dentry_open(&path, open_flags, current_cred());
2838 if (IS_ERR(filp)) {
2839 rc = PTR_ERR(filp);
bde1694a 2840 pr_err("dentry open for dir failed, rc %d\n", rc);
e2f34481
NJ		 2841 goto err_out;
2842 }
2843
2844 if (file_present) {
2845 if (!(open_flags & O_TRUNC))
2846 file_info = FILE_OPENED;
2847 else
2848 file_info = FILE_OVERWRITTEN;
2849
070fb21e
NJ		 2850 if ((req->CreateDisposition & FILE_CREATE_MASK_LE) ==
2851 FILE_SUPERSEDE_LE)
e2f34481 2852 file_info = FILE_SUPERSEDED;
64b39f4a 2853 } else if (open_flags & O_CREAT) {
e2f34481 2854 file_info = FILE_CREATED;
64b39f4a 2855 }
e2f34481
NJ		 2856
2857 ksmbd_vfs_set_fadvise(filp, req->CreateOptions);
2858
2859 /* Obtain Volatile-ID */
2860 fp = ksmbd_open_fd(work, filp);
2861 if (IS_ERR(fp)) {
2862 fput(filp);
2863 rc = PTR_ERR(fp);
2864 fp = NULL;
2865 goto err_out;
2866 }
2867
2868 /* Get Persistent-ID */
2869 ksmbd_open_durable_fd(fp);
3867369e 2870 if (!has_file_id(fp->persistent_id)) {
e2f34481
NJ		 2871 rc = -ENOMEM;
2872 goto err_out;
2873 }
2874
2875 fp->filename = name;
2876 fp->cdoption = req->CreateDisposition;
2877 fp->daccess = daccess;
2878 fp->saccess = req->ShareAccess;
2879 fp->coption = req->CreateOptions;
2880
2881 /* Set default windows and posix acls if creating new file */
2882 if (created) {
2883 int posix_acl_rc;
fba08fa0 2884 struct inode *inode = d_inode(path.dentry);
e2f34481 2885
465d7204 2886 posix_acl_rc = ksmbd_vfs_inherit_posix_acl(user_ns,
af34983e
HL		 2887 inode,
2888 d_inode(path.dentry->d_parent));
e2f34481
NJ		 2889 if (posix_acl_rc)
2890 ksmbd_debug(SMB, "inherit posix acl failed : %d\n", posix_acl_rc);
2891
2892 if (test_share_config_flag(work->tcon->share_conf,
64b39f4a 2893 KSMBD_SHARE_FLAG_ACL_XATTR)) {
ef24c962 2894 rc = smb_inherit_dacl(conn, &path, sess->user->uid,
070fb21e 2895 sess->user->gid);
e2f34481
NJ		 2896 }
2897
2898 if (rc) {
ef24c962 2899 rc = smb2_create_sd_buffer(work, req, &path);
e2f34481
NJ		 2900 if (rc) {
2901 if (posix_acl_rc)
465d7204 2902 ksmbd_vfs_set_init_posix_acl(user_ns,
af34983e 2903 inode);
e2f34481
NJ		 2904
2905 if (test_share_config_flag(work->tcon->share_conf,
64b39f4a 2906 KSMBD_SHARE_FLAG_ACL_XATTR)) {
e2f34481
NJ		 2907 struct smb_fattr fattr;
2908 struct smb_ntsd *pntsd;
3d47e546 2909 int pntsd_size, ace_num = 0;
e2f34481 2910
43205ca7 2911 ksmbd_acls_fattr(&fattr, user_ns, inode);
e6b1059f
MM		 2912 if (fattr.cf_acls)
2913 ace_num = fattr.cf_acls->a_count;
3d47e546
NJ		 2914 if (fattr.cf_dacls)
2915 ace_num += fattr.cf_dacls->a_count;
e2f34481
NJ		 2916
2917 pntsd = kmalloc(sizeof(struct smb_ntsd) +
64b39f4a 2918 sizeof(struct smb_sid) * 3 +
e2f34481 2919 sizeof(struct smb_acl) +
64b39f4a 2920 sizeof(struct smb_ace) * ace_num * 2,
e2f34481
NJ		 2921 GFP_KERNEL);
2922 if (!pntsd)
2923 goto err_out;
2924
465d7204 2925 rc = build_sec_desc(user_ns,
af34983e 2926 pntsd, NULL,
070fb21e 2927 OWNER_SECINFO |
af34983e
HL		 2928 GROUP_SECINFO |
2929 DACL_SECINFO,
070fb21e 2930 &pntsd_size, &fattr);
e2f34481
NJ		 2931 posix_acl_release(fattr.cf_acls);
2932 posix_acl_release(fattr.cf_dacls);
2933
2934 rc = ksmbd_vfs_set_sd_xattr(conn,
465d7204 2935 user_ns,
070fb21e
NJ		 2936 path.dentry,
2937 pntsd,
2938 pntsd_size);
3d47e546 2939 kfree(pntsd);
e2f34481 2940 if (rc)
bde1694a
NJ		 2941 pr_err("failed to store ntacl in xattr : %d\n",
2942 rc);
e2f34481
NJ		 2943 }
2944 }
2945 }
2946 rc = 0;
2947 }
2948
2949 if (stream_name) {
2950 rc = smb2_set_stream_name_xattr(&path,
2951 fp,
2952 stream_name,
2953 s_type);
2954 if (rc)
2955 goto err_out;
2956 file_info = FILE_CREATED;
2957 }
2958
2959 fp->attrib_only = !(req->DesiredAccess & ~(FILE_READ_ATTRIBUTES_LE |
2960 FILE_WRITE_ATTRIBUTES_LE | FILE_SYNCHRONIZE_LE));
64b39f4a
NJ		 2961 if (!S_ISDIR(file_inode(filp)->i_mode) && open_flags & O_TRUNC &&
2962 !fp->attrib_only && !stream_name) {
e2f34481
NJ		 2963 smb_break_all_oplock(work, fp);
2964 need_truncate = 1;
2965 }
2966
2967 /* fp should be searchable through ksmbd_inode.m_fp_list
2968 * after daccess, saccess, attrib_only, and stream are
2969 * initialized.
2970 */
2971 write_lock(&fp->f_ci->m_lock);
2972 list_add(&fp->node, &fp->f_ci->m_fp_list);
2973 write_unlock(&fp->f_ci->m_lock);
2974
2975 rc = ksmbd_vfs_getattr(&path, &stat);
2976 if (rc) {
465d7204 2977 generic_fillattr(user_ns, d_inode(path.dentry), &stat);
e2f34481
NJ		 2978 rc = 0;
2979 }
2980
2981 /* Check delete pending among previous fp before oplock break */
2982 if (ksmbd_inode_pending_delete(fp)) {
2983 rc = -EBUSY;
2984 goto err_out;
2985 }
2986
2987 share_ret = ksmbd_smb_check_shared_mode(fp->filp, fp);
64b39f4a
NJ		 2988 if (!test_share_config_flag(work->tcon->share_conf, KSMBD_SHARE_FLAG_OPLOCKS) ||
2989 (req_op_level == SMB2_OPLOCK_LEVEL_LEASE &&
2990 !(conn->vals->capabilities & SMB2_GLOBAL_CAP_LEASING))) {
ab0b263b 2991 if (share_ret < 0 && !S_ISDIR(file_inode(fp->filp)->i_mode)) {
e2f34481
NJ		 2992 rc = share_ret;
2993 goto err_out;
2994 }
2995 } else {
2996 if (req_op_level == SMB2_OPLOCK_LEVEL_LEASE) {
2997 req_op_level = smb2_map_lease_to_oplock(lc->req_state);
2998 ksmbd_debug(SMB,
070fb21e
NJ		 2999 "lease req for(%s) req oplock state 0x%x, lease state 0x%x\n",
3000 name, req_op_level, lc->req_state);
e2f34481
NJ		 3001 rc = find_same_lease_key(sess, fp->f_ci, lc);
3002 if (rc)
3003 goto err_out;
3004 } else if (open_flags == O_RDONLY &&
64b39f4a
NJ		 3005 (req_op_level == SMB2_OPLOCK_LEVEL_BATCH ||
3006 req_op_level == SMB2_OPLOCK_LEVEL_EXCLUSIVE))
e2f34481
NJ		 3007 req_op_level = SMB2_OPLOCK_LEVEL_II;
3008
3009 rc = smb_grant_oplock(work, req_op_level,
3010 fp->persistent_id, fp,
3011 le32_to_cpu(req->hdr.Id.SyncId.TreeId),
3012 lc, share_ret);
3013 if (rc < 0)
3014 goto err_out;
3015 }
3016
3017 if (req->CreateOptions & FILE_DELETE_ON_CLOSE_LE)
3018 ksmbd_fd_set_delete_on_close(fp, file_info);
3019
3020 if (need_truncate) {
3021 rc = smb2_create_truncate(&path);
3022 if (rc)
3023 goto err_out;
3024 }
3025
3026 if (req->CreateContextsOffset) {
3027 struct create_alloc_size_req *az_req;
3028
070fb21e
NJ		 3029 az_req = (struct create_alloc_size_req *)smb2_find_context_vals(req,
3030 SMB2_CREATE_ALLOCATION_SIZE);
f19b3967
NJ		 3031 if (IS_ERR(az_req)) {
3032 rc = PTR_ERR(az_req);
3033 goto err_out;
3034 } else if (az_req) {
8f77150c 3035 loff_t alloc_size;
e2f34481
NJ		 3036 int err;
3037
8f77150c
HL		 3038 if (le16_to_cpu(az_req->ccontext.DataOffset) +
3039 le32_to_cpu(az_req->ccontext.DataLength) <
3040 sizeof(struct create_alloc_size_req)) {
3041 rc = -EINVAL;
3042 goto err_out;
3043 }
3044 alloc_size = le64_to_cpu(az_req->AllocationSize);
e2f34481 3045 ksmbd_debug(SMB,
070fb21e
NJ		 3046 "request smb2 create allocate size : %llu\n",
3047 alloc_size);
e8c06191
NJ		 3048 smb_break_all_levII_oplock(work, fp, 1);
3049 err = vfs_fallocate(fp->filp, FALLOC_FL_KEEP_SIZE, 0,
3050 alloc_size);
e2f34481
NJ		 3051 if (err < 0)
3052 ksmbd_debug(SMB,
e8c06191 3053 "vfs_fallocate is failed : %d\n",
070fb21e 3054 err);
e2f34481
NJ		 3055 }
3056
64b39f4a 3057 context = smb2_find_context_vals(req, SMB2_CREATE_QUERY_ON_DISK_ID);
f19b3967
NJ		 3058 if (IS_ERR(context)) {
3059 rc = PTR_ERR(context);
3060 goto err_out;
3061 } else if (context) {
e2f34481
NJ		 3062 ksmbd_debug(SMB, "get query on disk id context\n");
3063 query_disk_id = 1;
3064 }
3065 }
3066
3067 if (stat.result_mask & STATX_BTIME)
3068 fp->create_time = ksmbd_UnixTimeToNT(stat.btime);
3069 else
3070 fp->create_time = ksmbd_UnixTimeToNT(stat.ctime);
3071 if (req->FileAttributes || fp->f_ci->m_fattr == 0)
070fb21e
NJ		 3072 fp->f_ci->m_fattr =
3073 cpu_to_le32(smb2_get_dos_mode(&stat, le32_to_cpu(req->FileAttributes)));
e2f34481
NJ		 3074
3075 if (!created)
3076 smb2_update_xattrs(tcon, &path, fp);
3077 else
3078 smb2_new_xattrs(tcon, &path, fp);
3079
3080 memcpy(fp->client_guid, conn->ClientGUID, SMB2_CLIENT_GUID_SIZE);
3081
465d7204 3082 generic_fillattr(user_ns, file_inode(fp->filp),
af34983e 3083 &stat);
e2f34481
NJ		 3084
3085 rsp->StructureSize = cpu_to_le16(89);
3086 rcu_read_lock();
3087 opinfo = rcu_dereference(fp->f_opinfo);
3088 rsp->OplockLevel = opinfo != NULL ? opinfo->level : 0;
3089 rcu_read_unlock();
3090 rsp->Reserved = 0;
3091 rsp->CreateAction = cpu_to_le32(file_info);
3092 rsp->CreationTime = cpu_to_le64(fp->create_time);
3093 time = ksmbd_UnixTimeToNT(stat.atime);
3094 rsp->LastAccessTime = cpu_to_le64(time);
3095 time = ksmbd_UnixTimeToNT(stat.mtime);
3096 rsp->LastWriteTime = cpu_to_le64(time);
3097 time = ksmbd_UnixTimeToNT(stat.ctime);
3098 rsp->ChangeTime = cpu_to_le64(time);
3099 rsp->AllocationSize = S_ISDIR(stat.mode) ? 0 :
3100 cpu_to_le64(stat.blocks << 9);
3101 rsp->EndofFile = S_ISDIR(stat.mode) ? 0 : cpu_to_le64(stat.size);
3102 rsp->FileAttributes = fp->f_ci->m_fattr;
3103
3104 rsp->Reserved2 = 0;
3105
3106 rsp->PersistentFileId = cpu_to_le64(fp->persistent_id);
3107 rsp->VolatileFileId = cpu_to_le64(fp->volatile_id);
3108
3109 rsp->CreateContextsOffset = 0;
3110 rsp->CreateContextsLength = 0;
3111 inc_rfc1001_len(rsp_org, 88); /* StructureSize - 1*/
3112
3113 /* If lease is request send lease context response */
3114 if (opinfo && opinfo->is_lease) {
3115 struct create_context *lease_ccontext;
3116
3117 ksmbd_debug(SMB, "lease granted on(%s) lease state 0x%x\n",
070fb21e 3118 name, opinfo->o_lease->state);
e2f34481
NJ		 3119 rsp->OplockLevel = SMB2_OPLOCK_LEVEL_LEASE;
3120
3121 lease_ccontext = (struct create_context *)rsp->Buffer;
3122 contxt_cnt++;
3123 create_lease_buf(rsp->Buffer, opinfo->o_lease);
3124 le32_add_cpu(&rsp->CreateContextsLength,
3125 conn->vals->create_lease_size);
3126 inc_rfc1001_len(rsp_org, conn->vals->create_lease_size);
3127 next_ptr = &lease_ccontext->Next;
3128 next_off = conn->vals->create_lease_size;
3129 }
3130
e2f34481
NJ		 3131 if (maximal_access_ctxt) {
3132 struct create_context *mxac_ccontext;
3133
3134 if (maximal_access == 0)
465d7204 3135 ksmbd_vfs_query_maximal_access(user_ns,
af34983e 3136 path.dentry,
e2f34481
NJ		 3137 &maximal_access);
3138 mxac_ccontext = (struct create_context *)(rsp->Buffer +
3139 le32_to_cpu(rsp->CreateContextsLength));
3140 contxt_cnt++;
3141 create_mxac_rsp_buf(rsp->Buffer +
3142 le32_to_cpu(rsp->CreateContextsLength),
3143 le32_to_cpu(maximal_access));
3144 le32_add_cpu(&rsp->CreateContextsLength,
3145 conn->vals->create_mxac_size);
3146 inc_rfc1001_len(rsp_org, conn->vals->create_mxac_size);
3147 if (next_ptr)
3148 *next_ptr = cpu_to_le32(next_off);
3149 next_ptr = &mxac_ccontext->Next;
3150 next_off = conn->vals->create_mxac_size;
3151 }
3152
3153 if (query_disk_id) {
3154 struct create_context *disk_id_ccontext;
3155
3156 disk_id_ccontext = (struct create_context *)(rsp->Buffer +
3157 le32_to_cpu(rsp->CreateContextsLength));
3158 contxt_cnt++;
3159 create_disk_id_rsp_buf(rsp->Buffer +
3160 le32_to_cpu(rsp->CreateContextsLength),
3161 stat.ino, tcon->id);
3162 le32_add_cpu(&rsp->CreateContextsLength,
3163 conn->vals->create_disk_id_size);
3164 inc_rfc1001_len(rsp_org, conn->vals->create_disk_id_size);
3165 if (next_ptr)
3166 *next_ptr = cpu_to_le32(next_off);
3167 next_ptr = &disk_id_ccontext->Next;
3168 next_off = conn->vals->create_disk_id_size;
3169 }
3170
3171 if (posix_ctxt) {
e2f34481
NJ		 3172 contxt_cnt++;
3173 create_posix_rsp_buf(rsp->Buffer +
3174 le32_to_cpu(rsp->CreateContextsLength),
3175 fp);
3176 le32_add_cpu(&rsp->CreateContextsLength,
3177 conn->vals->create_posix_size);
3178 inc_rfc1001_len(rsp_org, conn->vals->create_posix_size);
3179 if (next_ptr)
3180 *next_ptr = cpu_to_le32(next_off);
3181 }
3182
3183 if (contxt_cnt > 0) {
3184 rsp->CreateContextsOffset =
3185 cpu_to_le32(offsetof(struct smb2_create_rsp, Buffer)
3186 - 4);
3187 }
3188
3189err_out:
3190 if (file_present || created)
3191 path_put(&path);
3192 ksmbd_revert_fsids(work);
3193err_out1:
3194 if (rc) {
3195 if (rc == -EINVAL)
3196 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
3197 else if (rc == -EOPNOTSUPP)
3198 rsp->hdr.Status = STATUS_NOT_SUPPORTED;
265fd199 3199 else if (rc == -EACCES || rc == -ESTALE || rc == -EXDEV)
e2f34481
NJ		 3200 rsp->hdr.Status = STATUS_ACCESS_DENIED;
3201 else if (rc == -ENOENT)
3202 rsp->hdr.Status = STATUS_OBJECT_NAME_INVALID;
3203 else if (rc == -EPERM)
3204 rsp->hdr.Status = STATUS_SHARING_VIOLATION;
3205 else if (rc == -EBUSY)
3206 rsp->hdr.Status = STATUS_DELETE_PENDING;
3207 else if (rc == -EBADF)
3208 rsp->hdr.Status = STATUS_OBJECT_NAME_NOT_FOUND;
3209 else if (rc == -ENOEXEC)
3210 rsp->hdr.Status = STATUS_DUPLICATE_OBJECTID;
3211 else if (rc == -ENXIO)
3212 rsp->hdr.Status = STATUS_NO_SUCH_DEVICE;
3213 else if (rc == -EEXIST)
3214 rsp->hdr.Status = STATUS_OBJECT_NAME_COLLISION;
3215 else if (rc == -EMFILE)
3216 rsp->hdr.Status = STATUS_INSUFFICIENT_RESOURCES;
3217 if (!rsp->hdr.Status)
3218 rsp->hdr.Status = STATUS_UNEXPECTED_IO_ERROR;
3219
3220 if (!fp || !fp->filename)
3221 kfree(name);
3222 if (fp)
3223 ksmbd_fd_put(work, fp);
3224 smb2_set_err_rsp(work);
3225 ksmbd_debug(SMB, "Error response: %x\n", rsp->hdr.Status);
3226 }
3227
3228 kfree(lc);
3229
3230 return 0;
3231}
3232
3233static int readdir_info_level_struct_sz(int info_level)
3234{
3235 switch (info_level) {
3236 case FILE_FULL_DIRECTORY_INFORMATION:
3237 return sizeof(struct file_full_directory_info);
3238 case FILE_BOTH_DIRECTORY_INFORMATION:
3239 return sizeof(struct file_both_directory_info);
3240 case FILE_DIRECTORY_INFORMATION:
3241 return sizeof(struct file_directory_info);
3242 case FILE_NAMES_INFORMATION:
3243 return sizeof(struct file_names_info);
3244 case FILEID_FULL_DIRECTORY_INFORMATION:
3245 return sizeof(struct file_id_full_dir_info);
3246 case FILEID_BOTH_DIRECTORY_INFORMATION:
3247 return sizeof(struct file_id_both_directory_info);
3248 case SMB_FIND_FILE_POSIX_INFO:
3249 return sizeof(struct smb2_posix_info);
3250 default:
3251 return -EOPNOTSUPP;
3252 }
3253}
3254
3255static int dentry_name(struct ksmbd_dir_info *d_info, int info_level)
3256{
3257 switch (info_level) {
3258 case FILE_FULL_DIRECTORY_INFORMATION:
3259 {
3260 struct file_full_directory_info *ffdinfo;
3261
3262 ffdinfo = (struct file_full_directory_info *)d_info->rptr;
3263 d_info->rptr += le32_to_cpu(ffdinfo->NextEntryOffset);
3264 d_info->name = ffdinfo->FileName;
3265 d_info->name_len = le32_to_cpu(ffdinfo->FileNameLength);
3266 return 0;
3267 }
3268 case FILE_BOTH_DIRECTORY_INFORMATION:
3269 {
3270 struct file_both_directory_info *fbdinfo;
3271
3272 fbdinfo = (struct file_both_directory_info *)d_info->rptr;
3273 d_info->rptr += le32_to_cpu(fbdinfo->NextEntryOffset);
3274 d_info->name = fbdinfo->FileName;
3275 d_info->name_len = le32_to_cpu(fbdinfo->FileNameLength);
3276 return 0;
3277 }
3278 case FILE_DIRECTORY_INFORMATION:
3279 {
3280 struct file_directory_info *fdinfo;
3281
3282 fdinfo = (struct file_directory_info *)d_info->rptr;
3283 d_info->rptr += le32_to_cpu(fdinfo->NextEntryOffset);
3284 d_info->name = fdinfo->FileName;
3285 d_info->name_len = le32_to_cpu(fdinfo->FileNameLength);
3286 return 0;
3287 }
3288 case FILE_NAMES_INFORMATION:
3289 {
3290 struct file_names_info *fninfo;
3291
3292 fninfo = (struct file_names_info *)d_info->rptr;
3293 d_info->rptr += le32_to_cpu(fninfo->NextEntryOffset);
3294 d_info->name = fninfo->FileName;
3295 d_info->name_len = le32_to_cpu(fninfo->FileNameLength);
3296 return 0;
3297 }
3298 case FILEID_FULL_DIRECTORY_INFORMATION:
3299 {
3300 struct file_id_full_dir_info *dinfo;
3301
3302 dinfo = (struct file_id_full_dir_info *)d_info->rptr;
3303 d_info->rptr += le32_to_cpu(dinfo->NextEntryOffset);
3304 d_info->name = dinfo->FileName;
3305 d_info->name_len = le32_to_cpu(dinfo->FileNameLength);
3306 return 0;
3307 }
3308 case FILEID_BOTH_DIRECTORY_INFORMATION:
3309 {
3310 struct file_id_both_directory_info *fibdinfo;
3311
3312 fibdinfo = (struct file_id_both_directory_info *)d_info->rptr;
3313 d_info->rptr += le32_to_cpu(fibdinfo->NextEntryOffset);
3314 d_info->name = fibdinfo->FileName;
3315 d_info->name_len = le32_to_cpu(fibdinfo->FileNameLength);
3316 return 0;
3317 }
3318 case SMB_FIND_FILE_POSIX_INFO:
3319 {
3320 struct smb2_posix_info *posix_info;
3321
3322 posix_info = (struct smb2_posix_info *)d_info->rptr;
3323 d_info->rptr += le32_to_cpu(posix_info->NextEntryOffset);
3324 d_info->name = posix_info->name;
3325 d_info->name_len = le32_to_cpu(posix_info->name_len);
3326 return 0;
3327 }
3328 default:
3329 return -EINVAL;
3330 }
3331}
3332
3333/**
3334 * smb2_populate_readdir_entry() - encode directory entry in smb2 response
3335 * buffer
3336 * @conn: connection instance
3337 * @info_level: smb information level
3338 * @d_info: structure included variables for query dir
af34983e 3339 * @user_ns: user namespace
e2f34481
NJ		 3340 * @ksmbd_kstat: ksmbd wrapper of dirent stat information
3341 *
3342 * if directory has many entries, find first can't read it fully.
3343 * find next might be called multiple times to read remaining dir entries
3344 *
3345 * Return: 0 on success, otherwise error
3346 */
64b39f4a 3347static int smb2_populate_readdir_entry(struct ksmbd_conn *conn, int info_level,
070fb21e
NJ		 3348 struct ksmbd_dir_info *d_info,
3349 struct ksmbd_kstat *ksmbd_kstat)
e2f34481
NJ		 3350{
3351 int next_entry_offset = 0;
3352 char *conv_name;
3353 int conv_len;
3354 void *kstat;
dac0ec6e 3355 int struct_sz, rc = 0;
e2f34481
NJ		 3356
3357 conv_name = ksmbd_convert_dir_info_name(d_info,
3358 conn->local_nls,
3359 &conv_len);
3360 if (!conv_name)
3361 return -ENOMEM;
3362
3363 /* Somehow the name has only terminating NULL bytes */
3364 if (conv_len < 0) {
dac0ec6e
NJ		 3365 rc = -EINVAL;
3366 goto free_conv_name;
e2f34481
NJ		 3367 }
3368
3369 struct_sz = readdir_info_level_struct_sz(info_level);
3370 next_entry_offset = ALIGN(struct_sz - 1 + conv_len,
3371 KSMBD_DIR_INFO_ALIGNMENT);
3372
3373 if (next_entry_offset > d_info->out_buf_len) {
3374 d_info->out_buf_len = 0;
dac0ec6e
NJ		 3375 rc = -ENOSPC;
3376 goto free_conv_name;
e2f34481
NJ		 3377 }
3378
3379 kstat = d_info->wptr;
3380 if (info_level != FILE_NAMES_INFORMATION)
3381 kstat = ksmbd_vfs_init_kstat(&d_info->wptr, ksmbd_kstat);
3382
3383 switch (info_level) {
3384 case FILE_FULL_DIRECTORY_INFORMATION:
3385 {
3386 struct file_full_directory_info *ffdinfo;
3387
3388 ffdinfo = (struct file_full_directory_info *)kstat;
3389 ffdinfo->FileNameLength = cpu_to_le32(conv_len);
3390 ffdinfo->EaSize =
3391 smb2_get_reparse_tag_special_file(ksmbd_kstat->kstat->mode);
3392 if (ffdinfo->EaSize)
3393 ffdinfo->ExtFileAttributes = ATTR_REPARSE_POINT_LE;
3394 if (d_info->hide_dot_file && d_info->name[0] == '.')
3395 ffdinfo->ExtFileAttributes |= ATTR_HIDDEN_LE;
3396 memcpy(ffdinfo->FileName, conv_name, conv_len);
3397 ffdinfo->NextEntryOffset = cpu_to_le32(next_entry_offset);
3398 break;
3399 }
3400 case FILE_BOTH_DIRECTORY_INFORMATION:
3401 {
3402 struct file_both_directory_info *fbdinfo;
3403
3404 fbdinfo = (struct file_both_directory_info *)kstat;
3405 fbdinfo->FileNameLength = cpu_to_le32(conv_len);
3406 fbdinfo->EaSize =
3407 smb2_get_reparse_tag_special_file(ksmbd_kstat->kstat->mode);
3408 if (fbdinfo->EaSize)
3409 fbdinfo->ExtFileAttributes = ATTR_REPARSE_POINT_LE;
3410 fbdinfo->ShortNameLength = 0;
3411 fbdinfo->Reserved = 0;
3412 if (d_info->hide_dot_file && d_info->name[0] == '.')
3413 fbdinfo->ExtFileAttributes |= ATTR_HIDDEN_LE;
3414 memcpy(fbdinfo->FileName, conv_name, conv_len);
3415 fbdinfo->NextEntryOffset = cpu_to_le32(next_entry_offset);
3416 break;
3417 }
3418 case FILE_DIRECTORY_INFORMATION:
3419 {
3420 struct file_directory_info *fdinfo;
3421
3422 fdinfo = (struct file_directory_info *)kstat;
3423 fdinfo->FileNameLength = cpu_to_le32(conv_len);
3424 if (d_info->hide_dot_file && d_info->name[0] == '.')
3425 fdinfo->ExtFileAttributes |= ATTR_HIDDEN_LE;
3426 memcpy(fdinfo->FileName, conv_name, conv_len);
3427 fdinfo->NextEntryOffset = cpu_to_le32(next_entry_offset);
3428 break;
3429 }
3430 case FILE_NAMES_INFORMATION:
3431 {
3432 struct file_names_info *fninfo;
3433
3434 fninfo = (struct file_names_info *)kstat;
3435 fninfo->FileNameLength = cpu_to_le32(conv_len);
3436 memcpy(fninfo->FileName, conv_name, conv_len);
3437 fninfo->NextEntryOffset = cpu_to_le32(next_entry_offset);
3438 break;
3439 }
3440 case FILEID_FULL_DIRECTORY_INFORMATION:
3441 {
3442 struct file_id_full_dir_info *dinfo;
3443
3444 dinfo = (struct file_id_full_dir_info *)kstat;
3445 dinfo->FileNameLength = cpu_to_le32(conv_len);
3446 dinfo->EaSize =
3447 smb2_get_reparse_tag_special_file(ksmbd_kstat->kstat->mode);
3448 if (dinfo->EaSize)
3449 dinfo->ExtFileAttributes = ATTR_REPARSE_POINT_LE;
3450 dinfo->Reserved = 0;
3451 dinfo->UniqueId = cpu_to_le64(ksmbd_kstat->kstat->ino);
3452 if (d_info->hide_dot_file && d_info->name[0] == '.')
3453 dinfo->ExtFileAttributes |= ATTR_HIDDEN_LE;
3454 memcpy(dinfo->FileName, conv_name, conv_len);
3455 dinfo->NextEntryOffset = cpu_to_le32(next_entry_offset);
3456 break;
3457 }
3458 case FILEID_BOTH_DIRECTORY_INFORMATION:
3459 {
3460 struct file_id_both_directory_info *fibdinfo;
3461
3462 fibdinfo = (struct file_id_both_directory_info *)kstat;
3463 fibdinfo->FileNameLength = cpu_to_le32(conv_len);
3464 fibdinfo->EaSize =
3465 smb2_get_reparse_tag_special_file(ksmbd_kstat->kstat->mode);
3466 if (fibdinfo->EaSize)
3467 fibdinfo->ExtFileAttributes = ATTR_REPARSE_POINT_LE;
3468 fibdinfo->UniqueId = cpu_to_le64(ksmbd_kstat->kstat->ino);
3469 fibdinfo->ShortNameLength = 0;
3470 fibdinfo->Reserved = 0;
3471 fibdinfo->Reserved2 = cpu_to_le16(0);
3472 if (d_info->hide_dot_file && d_info->name[0] == '.')
3473 fibdinfo->ExtFileAttributes |= ATTR_HIDDEN_LE;
3474 memcpy(fibdinfo->FileName, conv_name, conv_len);
3475 fibdinfo->NextEntryOffset = cpu_to_le32(next_entry_offset);
3476 break;
3477 }
3478 case SMB_FIND_FILE_POSIX_INFO:
3479 {
3480 struct smb2_posix_info *posix_info;
3481 u64 time;
3482
3483 posix_info = (struct smb2_posix_info *)kstat;
3484 posix_info->Ignored = 0;
3485 posix_info->CreationTime = cpu_to_le64(ksmbd_kstat->create_time);
3486 time = ksmbd_UnixTimeToNT(ksmbd_kstat->kstat->ctime);
3487 posix_info->ChangeTime = cpu_to_le64(time);
3488 time = ksmbd_UnixTimeToNT(ksmbd_kstat->kstat->atime);
3489 posix_info->LastAccessTime = cpu_to_le64(time);
3490 time = ksmbd_UnixTimeToNT(ksmbd_kstat->kstat->mtime);
3491 posix_info->LastWriteTime = cpu_to_le64(time);
3492 posix_info->EndOfFile = cpu_to_le64(ksmbd_kstat->kstat->size);
3493 posix_info->AllocationSize = cpu_to_le64(ksmbd_kstat->kstat->blocks << 9);
3494 posix_info->DeviceId = cpu_to_le32(ksmbd_kstat->kstat->rdev);
3495 posix_info->HardLinks = cpu_to_le32(ksmbd_kstat->kstat->nlink);
3496 posix_info->Mode = cpu_to_le32(ksmbd_kstat->kstat->mode);
3497 posix_info->Inode = cpu_to_le64(ksmbd_kstat->kstat->ino);
3498 posix_info->DosAttributes =
3499 S_ISDIR(ksmbd_kstat->kstat->mode) ? ATTR_DIRECTORY_LE : ATTR_ARCHIVE_LE;
3500 if (d_info->hide_dot_file && d_info->name[0] == '.')
3501 posix_info->DosAttributes |= ATTR_HIDDEN_LE;
475d6f98 3502 id_to_sid(from_kuid_munged(&init_user_ns, ksmbd_kstat->kstat->uid),
070fb21e 3503 SIDNFS_USER, (struct smb_sid *)&posix_info->SidBuffer[0]);
475d6f98 3504 id_to_sid(from_kgid_munged(&init_user_ns, ksmbd_kstat->kstat->gid),
070fb21e 3505 SIDNFS_GROUP, (struct smb_sid *)&posix_info->SidBuffer[20]);
e2f34481
NJ		 3506 memcpy(posix_info->name, conv_name, conv_len);
3507 posix_info->name_len = cpu_to_le32(conv_len);
3508 posix_info->NextEntryOffset = cpu_to_le32(next_entry_offset);
3509 break;
3510 }
3511
3512 } /* switch (info_level) */
3513
3514 d_info->last_entry_offset = d_info->data_count;
3515 d_info->data_count += next_entry_offset;
e7735c85 3516 d_info->out_buf_len -= next_entry_offset;
e2f34481 3517 d_info->wptr += next_entry_offset;
e2f34481
NJ		 3518
3519 ksmbd_debug(SMB,
070fb21e
NJ		 3520 "info_level : %d, buf_len :%d, next_offset : %d, data_count : %d\n",
3521 info_level, d_info->out_buf_len,
3522 next_entry_offset, d_info->data_count);
e2f34481 3523
dac0ec6e
NJ		 3524free_conv_name:
3525 kfree(conv_name);
3526 return rc;
e2f34481
NJ		 3527}
3528
3529struct smb2_query_dir_private {
3530 struct ksmbd_work *work;
3531 char *search_pattern;
3532 struct ksmbd_file *dir_fp;
3533
3534 struct ksmbd_dir_info *d_info;
3535 int info_level;
3536};
3537
3538static void lock_dir(struct ksmbd_file *dir_fp)
3539{
3540 struct dentry *dir = dir_fp->filp->f_path.dentry;
3541
3542 inode_lock_nested(d_inode(dir), I_MUTEX_PARENT);
3543}
3544
3545static void unlock_dir(struct ksmbd_file *dir_fp)
3546{
3547 struct dentry *dir = dir_fp->filp->f_path.dentry;
3548
3549 inode_unlock(d_inode(dir));
3550}
3551
3552static int process_query_dir_entries(struct smb2_query_dir_private *priv)
3553{
465d7204 3554 struct user_namespace *user_ns = file_mnt_user_ns(priv->dir_fp->filp);
e2f34481
NJ		 3555 struct kstat kstat;
3556 struct ksmbd_kstat ksmbd_kstat;
3557 int rc;
3558 int i;
3559
3560 for (i = 0; i < priv->d_info->num_entry; i++) {
3561 struct dentry *dent;
3562
3563 if (dentry_name(priv->d_info, priv->info_level))
3564 return -EINVAL;
3565
3566 lock_dir(priv->dir_fp);
da1e7ada
CB		 3567 dent = lookup_one(user_ns, priv->d_info->name,
3568 priv->dir_fp->filp->f_path.dentry,
3569 priv->d_info->name_len);
e2f34481
NJ		 3570 unlock_dir(priv->dir_fp);
3571
3572 if (IS_ERR(dent)) {
3573 ksmbd_debug(SMB, "Cannot lookup `%s' [%ld]\n",
070fb21e
NJ		 3574 priv->d_info->name,
3575 PTR_ERR(dent));
e2f34481
NJ		 3576 continue;
3577 }
3578 if (unlikely(d_is_negative(dent))) {
3579 dput(dent);
3580 ksmbd_debug(SMB, "Negative dentry `%s'\n",
3581 priv->d_info->name);
3582 continue;
3583 }
3584
3585 ksmbd_kstat.kstat = &kstat;
3586 if (priv->info_level != FILE_NAMES_INFORMATION)
3587 ksmbd_vfs_fill_dentry_attrs(priv->work,
465d7204 3588 user_ns,
e2f34481
NJ		 3589 dent,
3590 &ksmbd_kstat);
3591
3592 rc = smb2_populate_readdir_entry(priv->work->conn,
3593 priv->info_level,
3594 priv->d_info,
3595 &ksmbd_kstat);
3596 dput(dent);
3597 if (rc)
3598 return rc;
3599 }
3600 return 0;
3601}
3602
3603static int reserve_populate_dentry(struct ksmbd_dir_info *d_info,
070fb21e 3604 int info_level)
e2f34481
NJ		 3605{
3606 int struct_sz;
3607 int conv_len;
3608 int next_entry_offset;
3609
3610 struct_sz = readdir_info_level_struct_sz(info_level);
3611 if (struct_sz == -EOPNOTSUPP)
3612 return -EOPNOTSUPP;
3613
3614 conv_len = (d_info->name_len + 1) * 2;
3615 next_entry_offset = ALIGN(struct_sz - 1 + conv_len,
3616 KSMBD_DIR_INFO_ALIGNMENT);
3617
3618 if (next_entry_offset > d_info->out_buf_len) {
3619 d_info->out_buf_len = 0;
3620 return -ENOSPC;
3621 }
3622
3623 switch (info_level) {
3624 case FILE_FULL_DIRECTORY_INFORMATION:
3625 {
3626 struct file_full_directory_info *ffdinfo;
3627
3628 ffdinfo = (struct file_full_directory_info *)d_info->wptr;
3629 memcpy(ffdinfo->FileName, d_info->name, d_info->name_len);
3630 ffdinfo->FileName[d_info->name_len] = 0x00;
3631 ffdinfo->FileNameLength = cpu_to_le32(d_info->name_len);
3632 ffdinfo->NextEntryOffset = cpu_to_le32(next_entry_offset);
3633 break;
3634 }
3635 case FILE_BOTH_DIRECTORY_INFORMATION:
3636 {
3637 struct file_both_directory_info *fbdinfo;
3638
3639 fbdinfo = (struct file_both_directory_info *)d_info->wptr;
3640 memcpy(fbdinfo->FileName, d_info->name, d_info->name_len);
3641 fbdinfo->FileName[d_info->name_len] = 0x00;
3642 fbdinfo->FileNameLength = cpu_to_le32(d_info->name_len);
3643 fbdinfo->NextEntryOffset = cpu_to_le32(next_entry_offset);
3644 break;
3645 }
3646 case FILE_DIRECTORY_INFORMATION:
3647 {
3648 struct file_directory_info *fdinfo;
3649
3650 fdinfo = (struct file_directory_info *)d_info->wptr;
3651 memcpy(fdinfo->FileName, d_info->name, d_info->name_len);
3652 fdinfo->FileName[d_info->name_len] = 0x00;
3653 fdinfo->FileNameLength = cpu_to_le32(d_info->name_len);
3654 fdinfo->NextEntryOffset = cpu_to_le32(next_entry_offset);
3655 break;
3656 }
3657 case FILE_NAMES_INFORMATION:
3658 {
3659 struct file_names_info *fninfo;
3660
3661 fninfo = (struct file_names_info *)d_info->wptr;
3662 memcpy(fninfo->FileName, d_info->name, d_info->name_len);
3663 fninfo->FileName[d_info->name_len] = 0x00;
3664 fninfo->FileNameLength = cpu_to_le32(d_info->name_len);
3665 fninfo->NextEntryOffset = cpu_to_le32(next_entry_offset);
3666 break;
3667 }
3668 case FILEID_FULL_DIRECTORY_INFORMATION:
3669 {
3670 struct file_id_full_dir_info *dinfo;
3671
3672 dinfo = (struct file_id_full_dir_info *)d_info->wptr;
3673 memcpy(dinfo->FileName, d_info->name, d_info->name_len);
3674 dinfo->FileName[d_info->name_len] = 0x00;
3675 dinfo->FileNameLength = cpu_to_le32(d_info->name_len);
3676 dinfo->NextEntryOffset = cpu_to_le32(next_entry_offset);
3677 break;
3678 }
3679 case FILEID_BOTH_DIRECTORY_INFORMATION:
3680 {
3681 struct file_id_both_directory_info *fibdinfo;
3682
3683 fibdinfo = (struct file_id_both_directory_info *)d_info->wptr;
3684 memcpy(fibdinfo->FileName, d_info->name, d_info->name_len);
3685 fibdinfo->FileName[d_info->name_len] = 0x00;
3686 fibdinfo->FileNameLength = cpu_to_le32(d_info->name_len);
3687 fibdinfo->NextEntryOffset = cpu_to_le32(next_entry_offset);
3688 break;
3689 }
3690 case SMB_FIND_FILE_POSIX_INFO:
3691 {
3692 struct smb2_posix_info *posix_info;
3693
3694 posix_info = (struct smb2_posix_info *)d_info->wptr;
3695 memcpy(posix_info->name, d_info->name, d_info->name_len);
3696 posix_info->name[d_info->name_len] = 0x00;
3697 posix_info->name_len = cpu_to_le32(d_info->name_len);
3698 posix_info->NextEntryOffset =
3699 cpu_to_le32(next_entry_offset);
3700 break;
3701 }
3702 } /* switch (info_level) */
3703
3704 d_info->num_entry++;
3705 d_info->out_buf_len -= next_entry_offset;
3706 d_info->wptr += next_entry_offset;
3707 return 0;
3708}
3709
64b39f4a 3710static int __query_dir(struct dir_context *ctx, const char *name, int namlen,
070fb21e 3711 loff_t offset, u64 ino, unsigned int d_type)
e2f34481
NJ		 3712{
3713 struct ksmbd_readdir_data *buf;
3714 struct smb2_query_dir_private *priv;
3715 struct ksmbd_dir_info *d_info;
3716 int rc;
3717
3718 buf = container_of(ctx, struct ksmbd_readdir_data, ctx);
3719 priv = buf->private;
3720 d_info = priv->d_info;
3721
3722 /* dot and dotdot entries are already reserved */
3723 if (!strcmp(".", name) || !strcmp("..", name))
3724 return 0;
3725 if (ksmbd_share_veto_filename(priv->work->tcon->share_conf, name))
3726 return 0;
b24c9335 3727 if (!match_pattern(name, namlen, priv->search_pattern))
e2f34481
NJ		 3728 return 0;
3729
3730 d_info->name = name;
3731 d_info->name_len = namlen;
3732 rc = reserve_populate_dentry(d_info, priv->info_level);
3733 if (rc)
3734 return rc;
3735 if (d_info->flags & SMB2_RETURN_SINGLE_ENTRY) {
3736 d_info->out_buf_len = 0;
3737 return 0;
3738 }
3739 return 0;
3740}
3741
3742static void restart_ctx(struct dir_context *ctx)
3743{
3744 ctx->pos = 0;
3745}
3746
3747static int verify_info_level(int info_level)
3748{
3749 switch (info_level) {
3750 case FILE_FULL_DIRECTORY_INFORMATION:
3751 case FILE_BOTH_DIRECTORY_INFORMATION:
3752 case FILE_DIRECTORY_INFORMATION:
3753 case FILE_NAMES_INFORMATION:
3754 case FILEID_FULL_DIRECTORY_INFORMATION:
3755 case FILEID_BOTH_DIRECTORY_INFORMATION:
3756 case SMB_FIND_FILE_POSIX_INFO:
3757 break;
3758 default:
3759 return -EOPNOTSUPP;
3760 }
3761
3762 return 0;
3763}
3764
3765int smb2_query_dir(struct ksmbd_work *work)
3766{
3767 struct ksmbd_conn *conn = work->conn;
3768 struct smb2_query_directory_req *req;
3769 struct smb2_query_directory_rsp *rsp, *rsp_org;
3770 struct ksmbd_share_config *share = work->tcon->share_conf;
3771 struct ksmbd_file *dir_fp = NULL;
3772 struct ksmbd_dir_info d_info;
3773 int rc = 0;
3774 char *srch_ptr = NULL;
3775 unsigned char srch_flag;
3776 int buffer_sz;
3777 struct smb2_query_dir_private query_dir_private = {NULL, };
3778
e5066499 3779 rsp_org = work->response_buf;
e2f34481
NJ		 3780 WORK_BUFFERS(work, req, rsp);
3781
3782 if (ksmbd_override_fsids(work)) {
3783 rsp->hdr.Status = STATUS_NO_MEMORY;
3784 smb2_set_err_rsp(work);
3785 return -ENOMEM;
3786 }
3787
3788 rc = verify_info_level(req->FileInformationClass);
3789 if (rc) {
3790 rc = -EFAULT;
3791 goto err_out2;
3792 }
3793
3794 dir_fp = ksmbd_lookup_fd_slow(work,
070fb21e
NJ		 3795 le64_to_cpu(req->VolatileFileId),
3796 le64_to_cpu(req->PersistentFileId));
e2f34481
NJ		 3797 if (!dir_fp) {
3798 rc = -EBADF;
3799 goto err_out2;
3800 }
3801
3802 if (!(dir_fp->daccess & FILE_LIST_DIRECTORY_LE) ||
af34983e
HL		 3803 inode_permission(file_mnt_user_ns(dir_fp->filp),
3804 file_inode(dir_fp->filp),
070fb21e 3805 MAY_READ | MAY_EXEC)) {
493fa2fb
NJ		 3806 pr_err("no right to enumerate directory (%pd)\n",
3807 dir_fp->filp->f_path.dentry);
e2f34481
NJ		 3808 rc = -EACCES;
3809 goto err_out2;
3810 }
3811
3812 if (!S_ISDIR(file_inode(dir_fp->filp)->i_mode)) {
bde1694a 3813 pr_err("can't do query dir for a file\n");
e2f34481
NJ		 3814 rc = -EINVAL;
3815 goto err_out2;
3816 }
3817
3818 srch_flag = req->Flags;
3819 srch_ptr = smb_strndup_from_utf16(req->Buffer,
070fb21e
NJ		 3820 le16_to_cpu(req->FileNameLength), 1,
3821 conn->local_nls);
e2f34481
NJ		 3822 if (IS_ERR(srch_ptr)) {
3823 ksmbd_debug(SMB, "Search Pattern not found\n");
3824 rc = -EINVAL;
3825 goto err_out2;
64b39f4a 3826 } else {
e2f34481 3827 ksmbd_debug(SMB, "Search pattern is %s\n", srch_ptr);
64b39f4a 3828 }
e2f34481
NJ		 3829
3830 ksmbd_debug(SMB, "Directory name is %s\n", dir_fp->filename);
3831
3832 if (srch_flag & SMB2_REOPEN || srch_flag & SMB2_RESTART_SCANS) {
3833 ksmbd_debug(SMB, "Restart directory scan\n");
3834 generic_file_llseek(dir_fp->filp, 0, SEEK_SET);
3835 restart_ctx(&dir_fp->readdir_data.ctx);
3836 }
3837
3838 memset(&d_info, 0, sizeof(struct ksmbd_dir_info));
3839 d_info.wptr = (char *)rsp->Buffer;
3840 d_info.rptr = (char *)rsp->Buffer;
64b39f4a 3841 d_info.out_buf_len = (work->response_sz - (get_rfc1002_len(rsp_org) + 4));
070fb21e
NJ		 3842 d_info.out_buf_len = min_t(int, d_info.out_buf_len, le32_to_cpu(req->OutputBufferLength)) -
3843 sizeof(struct smb2_query_directory_rsp);
e2f34481
NJ		 3844 d_info.flags = srch_flag;
3845
3846 /*
3847 * reserve dot and dotdot entries in head of buffer
3848 * in first response
3849 */
3850 rc = ksmbd_populate_dot_dotdot_entries(work, req->FileInformationClass,
070fb21e
NJ		 3851 dir_fp, &d_info, srch_ptr,
3852 smb2_populate_readdir_entry);
e2f34481
NJ		 3853 if (rc == -ENOSPC)
3854 rc = 0;
3855 else if (rc)
3856 goto err_out;
3857
3858 if (test_share_config_flag(share, KSMBD_SHARE_FLAG_HIDE_DOT_FILES))
3859 d_info.hide_dot_file = true;
3860
3861 buffer_sz = d_info.out_buf_len;
3862 d_info.rptr = d_info.wptr;
3863 query_dir_private.work = work;
3864 query_dir_private.search_pattern = srch_ptr;
3865 query_dir_private.dir_fp = dir_fp;
3866 query_dir_private.d_info = &d_info;
3867 query_dir_private.info_level = req->FileInformationClass;
3868 dir_fp->readdir_data.private = &query_dir_private;
3869 set_ctx_actor(&dir_fp->readdir_data.ctx, __query_dir);
3870
e8c06191 3871 rc = iterate_dir(dir_fp->filp, &dir_fp->readdir_data.ctx);
e2f34481
NJ		 3872 if (rc == 0)
3873 restart_ctx(&dir_fp->readdir_data.ctx);
3874 if (rc == -ENOSPC)
3875 rc = 0;
3876 if (rc)
3877 goto err_out;
3878
3879 d_info.wptr = d_info.rptr;
3880 d_info.out_buf_len = buffer_sz;
3881 rc = process_query_dir_entries(&query_dir_private);
3882 if (rc)
3883 goto err_out;
3884
3885 if (!d_info.data_count && d_info.out_buf_len >= 0) {
64b39f4a 3886 if (srch_flag & SMB2_RETURN_SINGLE_ENTRY && !is_asterisk(srch_ptr)) {
e2f34481 3887 rsp->hdr.Status = STATUS_NO_SUCH_FILE;
64b39f4a 3888 } else {
e2f34481
NJ		 3889 dir_fp->dot_dotdot[0] = dir_fp->dot_dotdot[1] = 0;
3890 rsp->hdr.Status = STATUS_NO_MORE_FILES;
3891 }
3892 rsp->StructureSize = cpu_to_le16(9);
3893 rsp->OutputBufferOffset = cpu_to_le16(0);
3894 rsp->OutputBufferLength = cpu_to_le32(0);
3895 rsp->Buffer[0] = 0;
3896 inc_rfc1001_len(rsp_org, 9);
3897 } else {
3898 ((struct file_directory_info *)
3899 ((char *)rsp->Buffer + d_info.last_entry_offset))
3900 ->NextEntryOffset = 0;
3901
3902 rsp->StructureSize = cpu_to_le16(9);
3903 rsp->OutputBufferOffset = cpu_to_le16(72);
3904 rsp->OutputBufferLength = cpu_to_le32(d_info.data_count);
3905 inc_rfc1001_len(rsp_org, 8 + d_info.data_count);
3906 }
3907
3908 kfree(srch_ptr);
3909 ksmbd_fd_put(work, dir_fp);
3910 ksmbd_revert_fsids(work);
3911 return 0;
3912
3913err_out:
bde1694a 3914 pr_err("error while processing smb2 query dir rc = %d\n", rc);
e2f34481
NJ		 3915 kfree(srch_ptr);
3916
3917err_out2:
3918 if (rc == -EINVAL)
3919 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
3920 else if (rc == -EACCES)
3921 rsp->hdr.Status = STATUS_ACCESS_DENIED;
3922 else if (rc == -ENOENT)
3923 rsp->hdr.Status = STATUS_NO_SUCH_FILE;
3924 else if (rc == -EBADF)
3925 rsp->hdr.Status = STATUS_FILE_CLOSED;
3926 else if (rc == -ENOMEM)
3927 rsp->hdr.Status = STATUS_NO_MEMORY;
3928 else if (rc == -EFAULT)
3929 rsp->hdr.Status = STATUS_INVALID_INFO_CLASS;
3930 if (!rsp->hdr.Status)
3931 rsp->hdr.Status = STATUS_UNEXPECTED_IO_ERROR;
3932
3933 smb2_set_err_rsp(work);
3934 ksmbd_fd_put(work, dir_fp);
3935 ksmbd_revert_fsids(work);
3936 return 0;
3937}
3938
3939/**
3940 * buffer_check_err() - helper function to check buffer errors
3941 * @reqOutputBufferLength: max buffer length expected in command response
3942 * @rsp: query info response buffer contains output buffer length
3943 * @infoclass_size: query info class response buffer size
3944 *
3945 * Return: 0 on success, otherwise error
3946 */
3947static int buffer_check_err(int reqOutputBufferLength,
070fb21e 3948 struct smb2_query_info_rsp *rsp, int infoclass_size)
e2f34481
NJ		 3949{
3950 if (reqOutputBufferLength < le32_to_cpu(rsp->OutputBufferLength)) {
3951 if (reqOutputBufferLength < infoclass_size) {
bde1694a 3952 pr_err("Invalid Buffer Size Requested\n");
e2f34481 3953 rsp->hdr.Status = STATUS_INFO_LENGTH_MISMATCH;
64b39f4a 3954 rsp->hdr.smb2_buf_length = cpu_to_be32(sizeof(struct smb2_hdr) - 4);
e2f34481
NJ		 3955 return -EINVAL;
3956 }
3957
3958 ksmbd_debug(SMB, "Buffer Overflow\n");
3959 rsp->hdr.Status = STATUS_BUFFER_OVERFLOW;
64b39f4a
NJ		 3960 rsp->hdr.smb2_buf_length = cpu_to_be32(sizeof(struct smb2_hdr) - 4 +
3961 reqOutputBufferLength);
3962 rsp->OutputBufferLength = cpu_to_le32(reqOutputBufferLength);
e2f34481
NJ		 3963 }
3964 return 0;
3965}
3966
3967static void get_standard_info_pipe(struct smb2_query_info_rsp *rsp)
3968{
3969 struct smb2_file_standard_info *sinfo;
3970
3971 sinfo = (struct smb2_file_standard_info *)rsp->Buffer;
3972
3973 sinfo->AllocationSize = cpu_to_le64(4096);
3974 sinfo->EndOfFile = cpu_to_le64(0);
3975 sinfo->NumberOfLinks = cpu_to_le32(1);
3976 sinfo->DeletePending = 1;
3977 sinfo->Directory = 0;
3978 rsp->OutputBufferLength =
3979 cpu_to_le32(sizeof(struct smb2_file_standard_info));
3980 inc_rfc1001_len(rsp, sizeof(struct smb2_file_standard_info));
3981}
3982
070fb21e 3983static void get_internal_info_pipe(struct smb2_query_info_rsp *rsp, u64 num)
e2f34481
NJ		 3984{
3985 struct smb2_file_internal_info *file_info;
3986
3987 file_info = (struct smb2_file_internal_info *)rsp->Buffer;
3988
3989 /* any unique number */
3990 file_info->IndexNumber = cpu_to_le64(num | (1ULL << 63));
3991 rsp->OutputBufferLength =
3992 cpu_to_le32(sizeof(struct smb2_file_internal_info));
3993 inc_rfc1001_len(rsp, sizeof(struct smb2_file_internal_info));
3994}
3995
e2f34481 3996static int smb2_get_info_file_pipe(struct ksmbd_session *sess,
070fb21e
NJ		 3997 struct smb2_query_info_req *req,
3998 struct smb2_query_info_rsp *rsp)
e2f34481 3999{
64b39f4a 4000 u64 id;
e2f34481
NJ		 4001 int rc;
4002
4003 /*
4004 * Windows can sometime send query file info request on
4005 * pipe without opening it, checking error condition here
4006 */
4007 id = le64_to_cpu(req->VolatileFileId);
4008 if (!ksmbd_session_rpc_method(sess, id))
4009 return -ENOENT;
4010
4011 ksmbd_debug(SMB, "FileInfoClass %u, FileId 0x%llx\n",
070fb21e 4012 req->FileInfoClass, le64_to_cpu(req->VolatileFileId));
e2f34481
NJ		 4013
4014 switch (req->FileInfoClass) {
4015 case FILE_STANDARD_INFORMATION:
4016 get_standard_info_pipe(rsp);
4017 rc = buffer_check_err(le32_to_cpu(req->OutputBufferLength),
070fb21e 4018 rsp, FILE_STANDARD_INFORMATION_SIZE);
e2f34481
NJ		 4019 break;
4020 case FILE_INTERNAL_INFORMATION:
4021 get_internal_info_pipe(rsp, id);
4022 rc = buffer_check_err(le32_to_cpu(req->OutputBufferLength),
070fb21e 4023 rsp, FILE_INTERNAL_INFORMATION_SIZE);
e2f34481
NJ		 4024 break;
4025 default:
4026 ksmbd_debug(SMB, "smb2_info_file_pipe for %u not supported\n",
070fb21e 4027 req->FileInfoClass);
e2f34481
NJ		 4028 rc = -EOPNOTSUPP;
4029 }
4030 return rc;
4031}
4032
4033/**
4034 * smb2_get_ea() - handler for smb2 get extended attribute command
4035 * @work: smb work containing query info command buffer
95fa1ce9
HL		 4036 * @fp: ksmbd_file pointer
4037 * @req: get extended attribute request
4038 * @rsp: response buffer pointer
4039 * @rsp_org: base response buffer pointer in case of chained response
e2f34481
NJ		 4040 *
4041 * Return: 0 on success, otherwise error
4042 */
64b39f4a 4043static int smb2_get_ea(struct ksmbd_work *work, struct ksmbd_file *fp,
070fb21e
NJ		 4044 struct smb2_query_info_req *req,
4045 struct smb2_query_info_rsp *rsp, void *rsp_org)
e2f34481
NJ		 4046{
4047 struct smb2_ea_info *eainfo, *prev_eainfo;
4048 char *name, *ptr, *xattr_list = NULL, *buf;
4049 int rc, name_len, value_len, xattr_list_len, idx;
4050 ssize_t buf_free_len, alignment_bytes, next_offset, rsp_data_cnt = 0;
4051 struct smb2_ea_info_req *ea_req = NULL;
4052 struct path *path;
465d7204 4053 struct user_namespace *user_ns = file_mnt_user_ns(fp->filp);
e2f34481
NJ		 4054
4055 if (!(fp->daccess & FILE_READ_EA_LE)) {
bde1694a
NJ		 4056 pr_err("Not permitted to read ext attr : 0x%x\n",
4057 fp->daccess);
e2f34481
NJ		 4058 return -EACCES;
4059 }
4060
4061 path = &fp->filp->f_path;
4062 /* single EA entry is requested with given user.* name */
64b39f4a 4063 if (req->InputBufferLength) {
6d56262c
NJ		 4064 if (le32_to_cpu(req->InputBufferLength) <
4065 sizeof(struct smb2_ea_info_req))
4066 return -EINVAL;
4067
e2f34481 4068 ea_req = (struct smb2_ea_info_req *)req->Buffer;
64b39f4a 4069 } else {
e2f34481
NJ		 4070 /* need to send all EAs, if no specific EA is requested*/
4071 if (le32_to_cpu(req->Flags) & SL_RETURN_SINGLE_ENTRY)
4072 ksmbd_debug(SMB,
070fb21e
NJ		 4073 "All EAs are requested but need to send single EA entry in rsp flags 0x%x\n",
4074 le32_to_cpu(req->Flags));
e2f34481
NJ		 4075 }
4076
4077 buf_free_len = work->response_sz -
4078 (get_rfc1002_len(rsp_org) + 4) -
4079 sizeof(struct smb2_query_info_rsp);
4080
4081 if (le32_to_cpu(req->OutputBufferLength) < buf_free_len)
4082 buf_free_len = le32_to_cpu(req->OutputBufferLength);
4083
4084 rc = ksmbd_vfs_listxattr(path->dentry, &xattr_list);
4085 if (rc < 0) {
4086 rsp->hdr.Status = STATUS_INVALID_HANDLE;
4087 goto out;
4088 } else if (!rc) { /* there is no EA in the file */
4089 ksmbd_debug(SMB, "no ea data in the file\n");
4090 goto done;
4091 }
4092 xattr_list_len = rc;
4093
4094 ptr = (char *)rsp->Buffer;
4095 eainfo = (struct smb2_ea_info *)ptr;
4096 prev_eainfo = eainfo;
4097 idx = 0;
4098
4099 while (idx < xattr_list_len) {
4100 name = xattr_list + idx;
4101 name_len = strlen(name);
4102
4103 ksmbd_debug(SMB, "%s, len %d\n", name, name_len);
4104 idx += name_len + 1;
4105
4106 /*
4107 * CIFS does not support EA other than user.* namespace,
4108 * still keep the framework generic, to list other attrs
4109 * in future.
4110 */
4111 if (strncmp(name, XATTR_USER_PREFIX, XATTR_USER_PREFIX_LEN))
4112 continue;
4113
4114 if (!strncmp(&name[XATTR_USER_PREFIX_LEN], STREAM_PREFIX,
64b39f4a 4115 STREAM_PREFIX_LEN))
e2f34481
NJ		 4116 continue;
4117
4118 if (req->InputBufferLength &&
64b39f4a
NJ		 4119 strncmp(&name[XATTR_USER_PREFIX_LEN], ea_req->name,
4120 ea_req->EaNameLength))
e2f34481
NJ		 4121 continue;
4122
4123 if (!strncmp(&name[XATTR_USER_PREFIX_LEN],
64b39f4a 4124 DOS_ATTRIBUTE_PREFIX, DOS_ATTRIBUTE_PREFIX_LEN))
e2f34481
NJ		 4125 continue;
4126
4127 if (!strncmp(name, XATTR_USER_PREFIX, XATTR_USER_PREFIX_LEN))
4128 name_len -= XATTR_USER_PREFIX_LEN;
4129
4130 ptr = (char *)(&eainfo->name + name_len + 1);
4131 buf_free_len -= (offsetof(struct smb2_ea_info, name) +
4132 name_len + 1);
4133 /* bailout if xattr can't fit in buf_free_len */
465d7204
HL		 4134 value_len = ksmbd_vfs_getxattr(user_ns, path->dentry,
4135 name, &buf);
e2f34481
NJ		 4136 if (value_len <= 0) {
4137 rc = -ENOENT;
4138 rsp->hdr.Status = STATUS_INVALID_HANDLE;
4139 goto out;
4140 }
4141
4142 buf_free_len -= value_len;
4143 if (buf_free_len < 0) {
79f6b11a 4144 kfree(buf);
e2f34481
NJ		 4145 break;
4146 }
4147
4148 memcpy(ptr, buf, value_len);
79f6b11a 4149 kfree(buf);
e2f34481
NJ		 4150
4151 ptr += value_len;
4152 eainfo->Flags = 0;
4153 eainfo->EaNameLength = name_len;
4154
64b39f4a 4155 if (!strncmp(name, XATTR_USER_PREFIX, XATTR_USER_PREFIX_LEN))
e2f34481 4156 memcpy(eainfo->name, &name[XATTR_USER_PREFIX_LEN],
070fb21e 4157 name_len);
e2f34481
NJ		 4158 else
4159 memcpy(eainfo->name, name, name_len);
4160
4161 eainfo->name[name_len] = '\0';
4162 eainfo->EaValueLength = cpu_to_le16(value_len);
4163 next_offset = offsetof(struct smb2_ea_info, name) +
4164 name_len + 1 + value_len;
4165
4166 /* align next xattr entry at 4 byte bundary */
4167 alignment_bytes = ((next_offset + 3) & ~3) - next_offset;
4168 if (alignment_bytes) {
4169 memset(ptr, '\0', alignment_bytes);
4170 ptr += alignment_bytes;
4171 next_offset += alignment_bytes;
4172 buf_free_len -= alignment_bytes;
4173 }
4174 eainfo->NextEntryOffset = cpu_to_le32(next_offset);
4175 prev_eainfo = eainfo;
4176 eainfo = (struct smb2_ea_info *)ptr;
4177 rsp_data_cnt += next_offset;
4178
4179 if (req->InputBufferLength) {
4180 ksmbd_debug(SMB, "single entry requested\n");
4181 break;
4182 }
4183 }
4184
4185 /* no more ea entries */
4186 prev_eainfo->NextEntryOffset = 0;
4187done:
4188 rc = 0;
4189 if (rsp_data_cnt == 0)
4190 rsp->hdr.Status = STATUS_NO_EAS_ON_FILE;
4191 rsp->OutputBufferLength = cpu_to_le32(rsp_data_cnt);
4192 inc_rfc1001_len(rsp_org, rsp_data_cnt);
4193out:
79f6b11a 4194 kvfree(xattr_list);
e2f34481
NJ		 4195 return rc;
4196}
4197
4198static void get_file_access_info(struct smb2_query_info_rsp *rsp,
070fb21e 4199 struct ksmbd_file *fp, void *rsp_org)
e2f34481
NJ		 4200{
4201 struct smb2_file_access_info *file_info;
4202
4203 file_info = (struct smb2_file_access_info *)rsp->Buffer;
4204 file_info->AccessFlags = fp->daccess;
4205 rsp->OutputBufferLength =
4206 cpu_to_le32(sizeof(struct smb2_file_access_info));
4207 inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_access_info));
4208}
4209
4210static int get_file_basic_info(struct smb2_query_info_rsp *rsp,
070fb21e 4211 struct ksmbd_file *fp, void *rsp_org)
e2f34481 4212{
88d30052 4213 struct smb2_file_basic_info *basic_info;
e2f34481
NJ		 4214 struct kstat stat;
4215 u64 time;
4216
4217 if (!(fp->daccess & FILE_READ_ATTRIBUTES_LE)) {
bde1694a
NJ		 4218 pr_err("no right to read the attributes : 0x%x\n",
4219 fp->daccess);
e2f34481
NJ		 4220 return -EACCES;
4221 }
4222
88d30052 4223 basic_info = (struct smb2_file_basic_info *)rsp->Buffer;
af34983e
HL		 4224 generic_fillattr(file_mnt_user_ns(fp->filp), file_inode(fp->filp),
4225 &stat);
e2f34481
NJ		 4226 basic_info->CreationTime = cpu_to_le64(fp->create_time);
4227 time = ksmbd_UnixTimeToNT(stat.atime);
4228 basic_info->LastAccessTime = cpu_to_le64(time);
4229 time = ksmbd_UnixTimeToNT(stat.mtime);
4230 basic_info->LastWriteTime = cpu_to_le64(time);
4231 time = ksmbd_UnixTimeToNT(stat.ctime);
4232 basic_info->ChangeTime = cpu_to_le64(time);
4233 basic_info->Attributes = fp->f_ci->m_fattr;
4234 basic_info->Pad1 = 0;
4235 rsp->OutputBufferLength =
88d30052
NJ		 4236 cpu_to_le32(sizeof(struct smb2_file_basic_info));
4237 inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_basic_info));
e2f34481
NJ		 4238 return 0;
4239}
4240
4241static unsigned long long get_allocation_size(struct inode *inode,
070fb21e 4242 struct kstat *stat)
e2f34481
NJ		 4243{
4244 unsigned long long alloc_size = 0;
4245
4246 if (!S_ISDIR(stat->mode)) {
4247 if ((inode->i_blocks << 9) <= stat->size)
4248 alloc_size = stat->size;
4249 else
4250 alloc_size = inode->i_blocks << 9;
e2f34481
NJ		 4251 }
4252
4253 return alloc_size;
4254}
4255
4256static void get_file_standard_info(struct smb2_query_info_rsp *rsp,
070fb21e 4257 struct ksmbd_file *fp, void *rsp_org)
e2f34481
NJ		 4258{
4259 struct smb2_file_standard_info *sinfo;
4260 unsigned int delete_pending;
4261 struct inode *inode;
4262 struct kstat stat;
4263
ab0b263b 4264 inode = file_inode(fp->filp);
af34983e 4265 generic_fillattr(file_mnt_user_ns(fp->filp), inode, &stat);
e2f34481
NJ		 4266
4267 sinfo = (struct smb2_file_standard_info *)rsp->Buffer;
4268 delete_pending = ksmbd_inode_pending_delete(fp);
4269
4270 sinfo->AllocationSize = cpu_to_le64(get_allocation_size(inode, &stat));
4271 sinfo->EndOfFile = S_ISDIR(stat.mode) ? 0 : cpu_to_le64(stat.size);
4272 sinfo->NumberOfLinks = cpu_to_le32(get_nlink(&stat) - delete_pending);
4273 sinfo->DeletePending = delete_pending;
4274 sinfo->Directory = S_ISDIR(stat.mode) ? 1 : 0;
4275 rsp->OutputBufferLength =
4276 cpu_to_le32(sizeof(struct smb2_file_standard_info));
4277 inc_rfc1001_len(rsp_org,
4278 sizeof(struct smb2_file_standard_info));
4279}
4280
4281static void get_file_alignment_info(struct smb2_query_info_rsp *rsp,
070fb21e 4282 void *rsp_org)
e2f34481
NJ		 4283{
4284 struct smb2_file_alignment_info *file_info;
4285
4286 file_info = (struct smb2_file_alignment_info *)rsp->Buffer;
4287 file_info->AlignmentRequirement = 0;
4288 rsp->OutputBufferLength =
4289 cpu_to_le32(sizeof(struct smb2_file_alignment_info));
4290 inc_rfc1001_len(rsp_org,
4291 sizeof(struct smb2_file_alignment_info));
4292}
4293
4294static int get_file_all_info(struct ksmbd_work *work,
070fb21e
NJ		 4295 struct smb2_query_info_rsp *rsp,
4296 struct ksmbd_file *fp,
4297 void *rsp_org)
e2f34481
NJ		 4298{
4299 struct ksmbd_conn *conn = work->conn;
4300 struct smb2_file_all_info *file_info;
4301 unsigned int delete_pending;
4302 struct inode *inode;
4303 struct kstat stat;
4304 int conv_len;
4305 char *filename;
4306 u64 time;
4307
4308 if (!(fp->daccess & FILE_READ_ATTRIBUTES_LE)) {
4309 ksmbd_debug(SMB, "no right to read the attributes : 0x%x\n",
070fb21e 4310 fp->daccess);
e2f34481
NJ		 4311 return -EACCES;
4312 }
4313
265fd199 4314 filename = convert_to_nt_pathname(fp->filename);
e2f34481
NJ		 4315 if (!filename)
4316 return -ENOMEM;
4317
ab0b263b 4318 inode = file_inode(fp->filp);
af34983e 4319 generic_fillattr(file_mnt_user_ns(fp->filp), inode, &stat);
e2f34481
NJ		 4320
4321 ksmbd_debug(SMB, "filename = %s\n", filename);
4322 delete_pending = ksmbd_inode_pending_delete(fp);
4323 file_info = (struct smb2_file_all_info *)rsp->Buffer;
4324
4325 file_info->CreationTime = cpu_to_le64(fp->create_time);
4326 time = ksmbd_UnixTimeToNT(stat.atime);
4327 file_info->LastAccessTime = cpu_to_le64(time);
4328 time = ksmbd_UnixTimeToNT(stat.mtime);
4329 file_info->LastWriteTime = cpu_to_le64(time);
4330 time = ksmbd_UnixTimeToNT(stat.ctime);
4331 file_info->ChangeTime = cpu_to_le64(time);
4332 file_info->Attributes = fp->f_ci->m_fattr;
4333 file_info->Pad1 = 0;
4334 file_info->AllocationSize =
4335 cpu_to_le64(get_allocation_size(inode, &stat));
4336 file_info->EndOfFile = S_ISDIR(stat.mode) ? 0 : cpu_to_le64(stat.size);
4337 file_info->NumberOfLinks =
4338 cpu_to_le32(get_nlink(&stat) - delete_pending);
4339 file_info->DeletePending = delete_pending;
4340 file_info->Directory = S_ISDIR(stat.mode) ? 1 : 0;
4341 file_info->Pad2 = 0;
4342 file_info->IndexNumber = cpu_to_le64(stat.ino);
4343 file_info->EASize = 0;
4344 file_info->AccessFlags = fp->daccess;
4345 file_info->CurrentByteOffset = cpu_to_le64(fp->filp->f_pos);
4346 file_info->Mode = fp->coption;
4347 file_info->AlignmentRequirement = 0;
070fb21e
NJ		 4348 conv_len = smbConvertToUTF16((__le16 *)file_info->FileName, filename,
4349 PATH_MAX, conn->local_nls, 0);
e2f34481
NJ		 4350 conv_len *= 2;
4351 file_info->FileNameLength = cpu_to_le32(conv_len);
4352 rsp->OutputBufferLength =
4353 cpu_to_le32(sizeof(struct smb2_file_all_info) + conv_len - 1);
4354 kfree(filename);
4355 inc_rfc1001_len(rsp_org, le32_to_cpu(rsp->OutputBufferLength));
4356 return 0;
4357}
4358
4359static void get_file_alternate_info(struct ksmbd_work *work,
070fb21e
NJ		 4360 struct smb2_query_info_rsp *rsp,
4361 struct ksmbd_file *fp,
4362 void *rsp_org)
e2f34481
NJ		 4363{
4364 struct ksmbd_conn *conn = work->conn;
4365 struct smb2_file_alt_name_info *file_info;
493fa2fb 4366 struct dentry *dentry = fp->filp->f_path.dentry;
e2f34481 4367 int conv_len;
e2f34481 4368
493fa2fb 4369 spin_lock(&dentry->d_lock);
e2f34481
NJ		 4370 file_info = (struct smb2_file_alt_name_info *)rsp->Buffer;
4371 conv_len = ksmbd_extract_shortname(conn,
493fa2fb 4372 dentry->d_name.name,
e2f34481 4373 file_info->FileName);
493fa2fb 4374 spin_unlock(&dentry->d_lock);
e2f34481
NJ		 4375 file_info->FileNameLength = cpu_to_le32(conv_len);
4376 rsp->OutputBufferLength =
4377 cpu_to_le32(sizeof(struct smb2_file_alt_name_info) + conv_len);
4378 inc_rfc1001_len(rsp_org, le32_to_cpu(rsp->OutputBufferLength));
4379}
4380
4381static void get_file_stream_info(struct ksmbd_work *work,
070fb21e
NJ		 4382 struct smb2_query_info_rsp *rsp,
4383 struct ksmbd_file *fp,
4384 void *rsp_org)
e2f34481
NJ		 4385{
4386 struct ksmbd_conn *conn = work->conn;
4387 struct smb2_file_stream_info *file_info;
4388 char *stream_name, *xattr_list = NULL, *stream_buf;
4389 struct kstat stat;
4390 struct path *path = &fp->filp->f_path;
4391 ssize_t xattr_list_len;
4392 int nbytes = 0, streamlen, stream_name_len, next, idx = 0;
4393
af34983e
HL		 4394 generic_fillattr(file_mnt_user_ns(fp->filp), file_inode(fp->filp),
4395 &stat);
e2f34481
NJ		 4396 file_info = (struct smb2_file_stream_info *)rsp->Buffer;
4397
4398 xattr_list_len = ksmbd_vfs_listxattr(path->dentry, &xattr_list);
4399 if (xattr_list_len < 0) {
4400 goto out;
4401 } else if (!xattr_list_len) {
4402 ksmbd_debug(SMB, "empty xattr in the file\n");
4403 goto out;
4404 }
4405
4406 while (idx < xattr_list_len) {
4407 stream_name = xattr_list + idx;
4408 streamlen = strlen(stream_name);
4409 idx += streamlen + 1;
4410
4411 ksmbd_debug(SMB, "%s, len %d\n", stream_name, streamlen);
4412
4413 if (strncmp(&stream_name[XATTR_USER_PREFIX_LEN],
64b39f4a 4414 STREAM_PREFIX, STREAM_PREFIX_LEN))
e2f34481
NJ		 4415 continue;
4416
4417 stream_name_len = streamlen - (XATTR_USER_PREFIX_LEN +
4418 STREAM_PREFIX_LEN);
4419 streamlen = stream_name_len;
4420
4421 /* plus : size */
4422 streamlen += 1;
4423 stream_buf = kmalloc(streamlen + 1, GFP_KERNEL);
4424 if (!stream_buf)
4425 break;
4426
4427 streamlen = snprintf(stream_buf, streamlen + 1,
070fb21e 4428 ":%s", &stream_name[XATTR_NAME_STREAM_LEN]);
e2f34481 4429
070fb21e 4430 file_info = (struct smb2_file_stream_info *)&rsp->Buffer[nbytes];
e2f34481 4431 streamlen = smbConvertToUTF16((__le16 *)file_info->StreamName,
070fb21e
NJ		 4432 stream_buf, streamlen,
4433 conn->local_nls, 0);
e2f34481
NJ		 4434 streamlen *= 2;
4435 kfree(stream_buf);
4436 file_info->StreamNameLength = cpu_to_le32(streamlen);
4437 file_info->StreamSize = cpu_to_le64(stream_name_len);
4438 file_info->StreamAllocationSize = cpu_to_le64(stream_name_len);
4439
4440 next = sizeof(struct smb2_file_stream_info) + streamlen;
4441 nbytes += next;
4442 file_info->NextEntryOffset = cpu_to_le32(next);
4443 }
4444
9f632331 4445 if (!S_ISDIR(stat.mode)) {
e2f34481
NJ		 4446 file_info = (struct smb2_file_stream_info *)
4447 &rsp->Buffer[nbytes];
4448 streamlen = smbConvertToUTF16((__le16 *)file_info->StreamName,
070fb21e 4449 "::$DATA", 7, conn->local_nls, 0);
e2f34481
NJ		 4450 streamlen *= 2;
4451 file_info->StreamNameLength = cpu_to_le32(streamlen);
9f632331
NJ		 4452 file_info->StreamSize = 0;
4453 file_info->StreamAllocationSize = 0;
e2f34481
NJ		 4454 nbytes += sizeof(struct smb2_file_stream_info) + streamlen;
4455 }
4456
4457 /* last entry offset should be 0 */
4458 file_info->NextEntryOffset = 0;
4459out:
79f6b11a 4460 kvfree(xattr_list);
e2f34481
NJ		 4461
4462 rsp->OutputBufferLength = cpu_to_le32(nbytes);
4463 inc_rfc1001_len(rsp_org, nbytes);
4464}
4465
4466static void get_file_internal_info(struct smb2_query_info_rsp *rsp,
070fb21e 4467 struct ksmbd_file *fp, void *rsp_org)
e2f34481
NJ		 4468{
4469 struct smb2_file_internal_info *file_info;
4470 struct kstat stat;
4471
af34983e
HL		 4472 generic_fillattr(file_mnt_user_ns(fp->filp), file_inode(fp->filp),
4473 &stat);
e2f34481
NJ		 4474 file_info = (struct smb2_file_internal_info *)rsp->Buffer;
4475 file_info->IndexNumber = cpu_to_le64(stat.ino);
4476 rsp->OutputBufferLength =
4477 cpu_to_le32(sizeof(struct smb2_file_internal_info));
4478 inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_internal_info));
4479}
4480
4481static int get_file_network_open_info(struct smb2_query_info_rsp *rsp,
070fb21e 4482 struct ksmbd_file *fp, void *rsp_org)
e2f34481
NJ		 4483{
4484 struct smb2_file_ntwrk_info *file_info;
4485 struct inode *inode;
4486 struct kstat stat;
4487 u64 time;
4488
4489 if (!(fp->daccess & FILE_READ_ATTRIBUTES_LE)) {
bde1694a
NJ		 4490 pr_err("no right to read the attributes : 0x%x\n",
4491 fp->daccess);
e2f34481
NJ		 4492 return -EACCES;
4493 }
4494
4495 file_info = (struct smb2_file_ntwrk_info *)rsp->Buffer;
4496
ab0b263b 4497 inode = file_inode(fp->filp);
af34983e 4498 generic_fillattr(file_mnt_user_ns(fp->filp), inode, &stat);
e2f34481
NJ		 4499
4500 file_info->CreationTime = cpu_to_le64(fp->create_time);
4501 time = ksmbd_UnixTimeToNT(stat.atime);
4502 file_info->LastAccessTime = cpu_to_le64(time);
4503 time = ksmbd_UnixTimeToNT(stat.mtime);
4504 file_info->LastWriteTime = cpu_to_le64(time);
4505 time = ksmbd_UnixTimeToNT(stat.ctime);
4506 file_info->ChangeTime = cpu_to_le64(time);
4507 file_info->Attributes = fp->f_ci->m_fattr;
4508 file_info->AllocationSize =
4509 cpu_to_le64(get_allocation_size(inode, &stat));
4510 file_info->EndOfFile = S_ISDIR(stat.mode) ? 0 : cpu_to_le64(stat.size);
4511 file_info->Reserved = cpu_to_le32(0);
4512 rsp->OutputBufferLength =
4513 cpu_to_le32(sizeof(struct smb2_file_ntwrk_info));
4514 inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_ntwrk_info));
4515 return 0;
4516}
4517
64b39f4a 4518static void get_file_ea_info(struct smb2_query_info_rsp *rsp, void *rsp_org)
e2f34481
NJ		 4519{
4520 struct smb2_file_ea_info *file_info;
4521
4522 file_info = (struct smb2_file_ea_info *)rsp->Buffer;
4523 file_info->EASize = 0;
4524 rsp->OutputBufferLength =
4525 cpu_to_le32(sizeof(struct smb2_file_ea_info));
4526 inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_ea_info));
4527}
4528
4529static void get_file_position_info(struct smb2_query_info_rsp *rsp,
070fb21e 4530 struct ksmbd_file *fp, void *rsp_org)
e2f34481
NJ		 4531{
4532 struct smb2_file_pos_info *file_info;
4533
4534 file_info = (struct smb2_file_pos_info *)rsp->Buffer;
4535 file_info->CurrentByteOffset = cpu_to_le64(fp->filp->f_pos);
4536 rsp->OutputBufferLength =
4537 cpu_to_le32(sizeof(struct smb2_file_pos_info));
4538 inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_pos_info));
4539}
4540
4541static void get_file_mode_info(struct smb2_query_info_rsp *rsp,
070fb21e 4542 struct ksmbd_file *fp, void *rsp_org)
e2f34481
NJ		 4543{
4544 struct smb2_file_mode_info *file_info;
4545
4546 file_info = (struct smb2_file_mode_info *)rsp->Buffer;
4547 file_info->Mode = fp->coption & FILE_MODE_INFO_MASK;
4548 rsp->OutputBufferLength =
4549 cpu_to_le32(sizeof(struct smb2_file_mode_info));
4550 inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_mode_info));
4551}
4552
4553static void get_file_compression_info(struct smb2_query_info_rsp *rsp,
070fb21e 4554 struct ksmbd_file *fp, void *rsp_org)
e2f34481
NJ		 4555{
4556 struct smb2_file_comp_info *file_info;
4557 struct kstat stat;
4558
af34983e
HL		 4559 generic_fillattr(file_mnt_user_ns(fp->filp), file_inode(fp->filp),
4560 &stat);
e2f34481
NJ		 4561
4562 file_info = (struct smb2_file_comp_info *)rsp->Buffer;
4563 file_info->CompressedFileSize = cpu_to_le64(stat.blocks << 9);
4564 file_info->CompressionFormat = COMPRESSION_FORMAT_NONE;
4565 file_info->CompressionUnitShift = 0;
4566 file_info->ChunkShift = 0;
4567 file_info->ClusterShift = 0;
4568 memset(&file_info->Reserved[0], 0, 3);
4569
4570 rsp->OutputBufferLength =
4571 cpu_to_le32(sizeof(struct smb2_file_comp_info));
4572 inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_comp_info));
4573}
4574
4575static int get_file_attribute_tag_info(struct smb2_query_info_rsp *rsp,
070fb21e 4576 struct ksmbd_file *fp, void *rsp_org)
e2f34481
NJ		 4577{
4578 struct smb2_file_attr_tag_info *file_info;
4579
4580 if (!(fp->daccess & FILE_READ_ATTRIBUTES_LE)) {
bde1694a
NJ		 4581 pr_err("no right to read the attributes : 0x%x\n",
4582 fp->daccess);
e2f34481
NJ		 4583 return -EACCES;
4584 }
4585
4586 file_info = (struct smb2_file_attr_tag_info *)rsp->Buffer;
4587 file_info->FileAttributes = fp->f_ci->m_fattr;
4588 file_info->ReparseTag = 0;
4589 rsp->OutputBufferLength =
4590 cpu_to_le32(sizeof(struct smb2_file_attr_tag_info));
070fb21e 4591 inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_attr_tag_info));
e2f34481
NJ		 4592 return 0;
4593}
4594
4595static int find_file_posix_info(struct smb2_query_info_rsp *rsp,
070fb21e 4596 struct ksmbd_file *fp, void *rsp_org)
e2f34481
NJ		 4597{
4598 struct smb311_posix_qinfo *file_info;
ab0b263b 4599 struct inode *inode = file_inode(fp->filp);
e2f34481
NJ		 4600 u64 time;
4601
4602 file_info = (struct smb311_posix_qinfo *)rsp->Buffer;
4603 file_info->CreationTime = cpu_to_le64(fp->create_time);
4604 time = ksmbd_UnixTimeToNT(inode->i_atime);
4605 file_info->LastAccessTime = cpu_to_le64(time);
4606 time = ksmbd_UnixTimeToNT(inode->i_mtime);
4607 file_info->LastWriteTime = cpu_to_le64(time);
4608 time = ksmbd_UnixTimeToNT(inode->i_ctime);
4609 file_info->ChangeTime = cpu_to_le64(time);
4610 file_info->DosAttributes = fp->f_ci->m_fattr;
4611 file_info->Inode = cpu_to_le64(inode->i_ino);
4612 file_info->EndOfFile = cpu_to_le64(inode->i_size);
4613 file_info->AllocationSize = cpu_to_le64(inode->i_blocks << 9);
4614 file_info->HardLinks = cpu_to_le32(inode->i_nlink);
4615 file_info->Mode = cpu_to_le32(inode->i_mode);
4616 file_info->DeviceId = cpu_to_le32(inode->i_rdev);
4617 rsp->OutputBufferLength =
4618 cpu_to_le32(sizeof(struct smb311_posix_qinfo));
64b39f4a 4619 inc_rfc1001_len(rsp_org, sizeof(struct smb311_posix_qinfo));
e2f34481
NJ		 4620 return 0;
4621}
4622
e2f34481 4623static int smb2_get_info_file(struct ksmbd_work *work,
070fb21e
NJ		 4624 struct smb2_query_info_req *req,
4625 struct smb2_query_info_rsp *rsp, void *rsp_org)
e2f34481
NJ		 4626{
4627 struct ksmbd_file *fp;
4628 int fileinfoclass = 0;
4629 int rc = 0;
4630 int file_infoclass_size;
4631 unsigned int id = KSMBD_NO_FID, pid = KSMBD_NO_FID;
4632
4633 if (test_share_config_flag(work->tcon->share_conf,
64b39f4a 4634 KSMBD_SHARE_FLAG_PIPE)) {
e2f34481
NJ		 4635 /* smb2 info file called for pipe */
4636 return smb2_get_info_file_pipe(work->sess, req, rsp);
4637 }
4638
4639 if (work->next_smb2_rcv_hdr_off) {
3867369e
NJ		 4640 if (!has_file_id(le64_to_cpu(req->VolatileFileId))) {
4641 ksmbd_debug(SMB, "Compound request set FID = %llu\n",
070fb21e 4642 work->compound_fid);
e2f34481
NJ		 4643 id = work->compound_fid;
4644 pid = work->compound_pfid;
4645 }
4646 }
4647
3867369e 4648 if (!has_file_id(id)) {
e2f34481
NJ		 4649 id = le64_to_cpu(req->VolatileFileId);
4650 pid = le64_to_cpu(req->PersistentFileId);
4651 }
4652
4653 fp = ksmbd_lookup_fd_slow(work, id, pid);
4654 if (!fp)
4655 return -ENOENT;
4656
4657 fileinfoclass = req->FileInfoClass;
4658
4659 switch (fileinfoclass) {
4660 case FILE_ACCESS_INFORMATION:
4661 get_file_access_info(rsp, fp, rsp_org);
4662 file_infoclass_size = FILE_ACCESS_INFORMATION_SIZE;
4663 break;
4664
4665 case FILE_BASIC_INFORMATION:
4666 rc = get_file_basic_info(rsp, fp, rsp_org);
4667 file_infoclass_size = FILE_BASIC_INFORMATION_SIZE;
4668 break;
4669
4670 case FILE_STANDARD_INFORMATION:
4671 get_file_standard_info(rsp, fp, rsp_org);
4672 file_infoclass_size = FILE_STANDARD_INFORMATION_SIZE;
4673 break;
4674
4675 case FILE_ALIGNMENT_INFORMATION:
4676 get_file_alignment_info(rsp, rsp_org);
4677 file_infoclass_size = FILE_ALIGNMENT_INFORMATION_SIZE;
4678 break;
4679
4680 case FILE_ALL_INFORMATION:
4681 rc = get_file_all_info(work, rsp, fp, rsp_org);
4682 file_infoclass_size = FILE_ALL_INFORMATION_SIZE;
4683 break;
4684
4685 case FILE_ALTERNATE_NAME_INFORMATION:
4686 get_file_alternate_info(work, rsp, fp, rsp_org);
4687 file_infoclass_size = FILE_ALTERNATE_NAME_INFORMATION_SIZE;
4688 break;
4689
4690 case FILE_STREAM_INFORMATION:
4691 get_file_stream_info(work, rsp, fp, rsp_org);
4692 file_infoclass_size = FILE_STREAM_INFORMATION_SIZE;
4693 break;
4694
4695 case FILE_INTERNAL_INFORMATION:
4696 get_file_internal_info(rsp, fp, rsp_org);
4697 file_infoclass_size = FILE_INTERNAL_INFORMATION_SIZE;
4698 break;
4699
4700 case FILE_NETWORK_OPEN_INFORMATION:
4701 rc = get_file_network_open_info(rsp, fp, rsp_org);
4702 file_infoclass_size = FILE_NETWORK_OPEN_INFORMATION_SIZE;
4703 break;
4704
4705 case FILE_EA_INFORMATION:
4706 get_file_ea_info(rsp, rsp_org);
4707 file_infoclass_size = FILE_EA_INFORMATION_SIZE;
4708 break;
4709
4710 case FILE_FULL_EA_INFORMATION:
4711 rc = smb2_get_ea(work, fp, req, rsp, rsp_org);
4712 file_infoclass_size = FILE_FULL_EA_INFORMATION_SIZE;
4713 break;
4714
4715 case FILE_POSITION_INFORMATION:
4716 get_file_position_info(rsp, fp, rsp_org);
4717 file_infoclass_size = FILE_POSITION_INFORMATION_SIZE;
4718 break;
4719
4720 case FILE_MODE_INFORMATION:
4721 get_file_mode_info(rsp, fp, rsp_org);
4722 file_infoclass_size = FILE_MODE_INFORMATION_SIZE;
4723 break;
4724
4725 case FILE_COMPRESSION_INFORMATION:
4726 get_file_compression_info(rsp, fp, rsp_org);
4727 file_infoclass_size = FILE_COMPRESSION_INFORMATION_SIZE;
4728 break;
4729
4730 case FILE_ATTRIBUTE_TAG_INFORMATION:
4731 rc = get_file_attribute_tag_info(rsp, fp, rsp_org);
4732 file_infoclass_size = FILE_ATTRIBUTE_TAG_INFORMATION_SIZE;
4733 break;
4734 case SMB_FIND_FILE_POSIX_INFO:
4735 if (!work->tcon->posix_extensions) {
bde1694a 4736 pr_err("client doesn't negotiate with SMB3.1.1 POSIX Extensions\n");
e2f34481
NJ		 4737 rc = -EOPNOTSUPP;
4738 } else {
4739 rc = find_file_posix_info(rsp, fp, rsp_org);
4740 file_infoclass_size = sizeof(struct smb311_posix_qinfo);
4741 }
4742 break;
4743 default:
4744 ksmbd_debug(SMB, "fileinfoclass %d not supported yet\n",
4745 fileinfoclass);
4746 rc = -EOPNOTSUPP;
4747 }
4748 if (!rc)
4749 rc = buffer_check_err(le32_to_cpu(req->OutputBufferLength),
4750 rsp,
4751 file_infoclass_size);
4752 ksmbd_fd_put(work, fp);
4753 return rc;
4754}
4755
e2f34481 4756static int smb2_get_info_filesystem(struct ksmbd_work *work,
070fb21e
NJ		 4757 struct smb2_query_info_req *req,
4758 struct smb2_query_info_rsp *rsp, void *rsp_org)
e2f34481
NJ		 4759{
4760 struct ksmbd_session *sess = work->sess;
4761 struct ksmbd_conn *conn = sess->conn;
4762 struct ksmbd_share_config *share = work->tcon->share_conf;
4763 int fsinfoclass = 0;
4764 struct kstatfs stfs;
4765 struct path path;
4766 int rc = 0, len;
4767 int fs_infoclass_size = 0;
a6a5fa77 4768
265fd199 4769 rc = kern_path(share->path, LOOKUP_NO_SYMLINKS, &path);
e2f34481 4770 if (rc) {
bde1694a 4771 pr_err("cannot create vfs path\n");
e2f34481
NJ		 4772 return -EIO;
4773 }
4774
4775 rc = vfs_statfs(&path, &stfs);
4776 if (rc) {
bde1694a 4777 pr_err("cannot do stat of path %s\n", share->path);
e2f34481
NJ		 4778 path_put(&path);
4779 return -EIO;
4780 }
4781
4782 fsinfoclass = req->FileInfoClass;
4783
4784 switch (fsinfoclass) {
4785 case FS_DEVICE_INFORMATION:
4786 {
4787 struct filesystem_device_info *info;
4788
4789 info = (struct filesystem_device_info *)rsp->Buffer;
4790
4791 info->DeviceType = cpu_to_le32(stfs.f_type);
4792 info->DeviceCharacteristics = cpu_to_le32(0x00000020);
4793 rsp->OutputBufferLength = cpu_to_le32(8);
4794 inc_rfc1001_len(rsp_org, 8);
4795 fs_infoclass_size = FS_DEVICE_INFORMATION_SIZE;
4796 break;
4797 }
4798 case FS_ATTRIBUTE_INFORMATION:
4799 {
4800 struct filesystem_attribute_info *info;
4801 size_t sz;
4802
4803 info = (struct filesystem_attribute_info *)rsp->Buffer;
4804 info->Attributes = cpu_to_le32(FILE_SUPPORTS_OBJECT_IDS |
4805 FILE_PERSISTENT_ACLS |
4806 FILE_UNICODE_ON_DISK |
4807 FILE_CASE_PRESERVED_NAMES |
eb817368
NJ		 4808 FILE_CASE_SENSITIVE_SEARCH |
4809 FILE_SUPPORTS_BLOCK_REFCOUNTING);
e2f34481
NJ		 4810
4811 info->Attributes |= cpu_to_le32(server_conf.share_fake_fscaps);
4812
4813 info->MaxPathNameComponentLength = cpu_to_le32(stfs.f_namelen);
4814 len = smbConvertToUTF16((__le16 *)info->FileSystemName,
4815 "NTFS", PATH_MAX, conn->local_nls, 0);
4816 len = len * 2;
4817 info->FileSystemNameLen = cpu_to_le32(len);
4818 sz = sizeof(struct filesystem_attribute_info) - 2 + len;
4819 rsp->OutputBufferLength = cpu_to_le32(sz);
4820 inc_rfc1001_len(rsp_org, sz);
4821 fs_infoclass_size = FS_ATTRIBUTE_INFORMATION_SIZE;
4822 break;
4823 }
4824 case FS_VOLUME_INFORMATION:
4825 {
4826 struct filesystem_vol_info *info;
4827 size_t sz;
4828
4829 info = (struct filesystem_vol_info *)(rsp->Buffer);
4830 info->VolumeCreationTime = 0;
4831 /* Taking dummy value of serial number*/
4832 info->SerialNumber = cpu_to_le32(0xbc3ac512);
4833 len = smbConvertToUTF16((__le16 *)info->VolumeLabel,
4834 share->name, PATH_MAX,
4835 conn->local_nls, 0);
4836 len = len * 2;
4837 info->VolumeLabelSize = cpu_to_le32(len);
4838 info->Reserved = 0;
4839 sz = sizeof(struct filesystem_vol_info) - 2 + len;
4840 rsp->OutputBufferLength = cpu_to_le32(sz);
4841 inc_rfc1001_len(rsp_org, sz);
4842 fs_infoclass_size = FS_VOLUME_INFORMATION_SIZE;
4843 break;
4844 }
4845 case FS_SIZE_INFORMATION:
4846 {
4847 struct filesystem_info *info;
e2f34481
NJ		 4848
4849 info = (struct filesystem_info *)(rsp->Buffer);
e2f34481
NJ		 4850 info->TotalAllocationUnits = cpu_to_le64(stfs.f_blocks);
4851 info->FreeAllocationUnits = cpu_to_le64(stfs.f_bfree);
ee81cae1
NJ		 4852 info->SectorsPerAllocationUnit = cpu_to_le32(1);
4853 info->BytesPerSector = cpu_to_le32(stfs.f_bsize);
e2f34481
NJ		 4854 rsp->OutputBufferLength = cpu_to_le32(24);
4855 inc_rfc1001_len(rsp_org, 24);
4856 fs_infoclass_size = FS_SIZE_INFORMATION_SIZE;
4857 break;
4858 }
4859 case FS_FULL_SIZE_INFORMATION:
4860 {
4861 struct smb2_fs_full_size_info *info;
e2f34481
NJ		 4862
4863 info = (struct smb2_fs_full_size_info *)(rsp->Buffer);
e2f34481
NJ		 4864 info->TotalAllocationUnits = cpu_to_le64(stfs.f_blocks);
4865 info->CallerAvailableAllocationUnits =
4866 cpu_to_le64(stfs.f_bavail);
4867 info->ActualAvailableAllocationUnits =
4868 cpu_to_le64(stfs.f_bfree);
ee81cae1
NJ		 4869 info->SectorsPerAllocationUnit = cpu_to_le32(1);
4870 info->BytesPerSector = cpu_to_le32(stfs.f_bsize);
e2f34481
NJ		 4871 rsp->OutputBufferLength = cpu_to_le32(32);
4872 inc_rfc1001_len(rsp_org, 32);
4873 fs_infoclass_size = FS_FULL_SIZE_INFORMATION_SIZE;
4874 break;
4875 }
4876 case FS_OBJECT_ID_INFORMATION:
4877 {
4878 struct object_id_info *info;
4879
4880 info = (struct object_id_info *)(rsp->Buffer);
4881
4882 if (!user_guest(sess->user))
4883 memcpy(info->objid, user_passkey(sess->user), 16);
4884 else
4885 memset(info->objid, 0, 16);
4886
4887 info->extended_info.magic = cpu_to_le32(EXTENDED_INFO_MAGIC);
4888 info->extended_info.version = cpu_to_le32(1);
4889 info->extended_info.release = cpu_to_le32(1);
4890 info->extended_info.rel_date = 0;
64b39f4a 4891 memcpy(info->extended_info.version_string, "1.1.0", strlen("1.1.0"));
e2f34481
NJ		 4892 rsp->OutputBufferLength = cpu_to_le32(64);
4893 inc_rfc1001_len(rsp_org, 64);
4894 fs_infoclass_size = FS_OBJECT_ID_INFORMATION_SIZE;
4895 break;
4896 }
4897 case FS_SECTOR_SIZE_INFORMATION:
4898 {
4899 struct smb3_fs_ss_info *info;
e2f34481
NJ		 4900
4901 info = (struct smb3_fs_ss_info *)(rsp->Buffer);
e2f34481 4902
131bac1e 4903 info->LogicalBytesPerSector = cpu_to_le32(stfs.f_bsize);
e2f34481 4904 info->PhysicalBytesPerSectorForAtomicity =
131bac1e
NJ		 4905 cpu_to_le32(stfs.f_bsize);
4906 info->PhysicalBytesPerSectorForPerf = cpu_to_le32(stfs.f_bsize);
e2f34481 4907 info->FSEffPhysicalBytesPerSectorForAtomicity =
131bac1e 4908 cpu_to_le32(stfs.f_bsize);
e2f34481
NJ		 4909 info->Flags = cpu_to_le32(SSINFO_FLAGS_ALIGNED_DEVICE |
4910 SSINFO_FLAGS_PARTITION_ALIGNED_ON_DEVICE);
4911 info->ByteOffsetForSectorAlignment = 0;
4912 info->ByteOffsetForPartitionAlignment = 0;
4913 rsp->OutputBufferLength = cpu_to_le32(28);
4914 inc_rfc1001_len(rsp_org, 28);
4915 fs_infoclass_size = FS_SECTOR_SIZE_INFORMATION_SIZE;
4916 break;
4917 }
4918 case FS_CONTROL_INFORMATION:
4919 {
4920 /*
4921 * TODO : The current implementation is based on
4922 * test result with win7(NTFS) server. It's need to
4923 * modify this to get valid Quota values
4924 * from Linux kernel
4925 */
4926 struct smb2_fs_control_info *info;
4927
4928 info = (struct smb2_fs_control_info *)(rsp->Buffer);
4929 info->FreeSpaceStartFiltering = 0;
4930 info->FreeSpaceThreshold = 0;
4931 info->FreeSpaceStopFiltering = 0;
4932 info->DefaultQuotaThreshold = cpu_to_le64(SMB2_NO_FID);
4933 info->DefaultQuotaLimit = cpu_to_le64(SMB2_NO_FID);
4934 info->Padding = 0;
4935 rsp->OutputBufferLength = cpu_to_le32(48);
4936 inc_rfc1001_len(rsp_org, 48);
4937 fs_infoclass_size = FS_CONTROL_INFORMATION_SIZE;
4938 break;
4939 }
4940 case FS_POSIX_INFORMATION:
4941 {
4942 struct filesystem_posix_info *info;
e2f34481
NJ		 4943
4944 if (!work->tcon->posix_extensions) {
bde1694a 4945 pr_err("client doesn't negotiate with SMB3.1.1 POSIX Extensions\n");
e2f34481
NJ		 4946 rc = -EOPNOTSUPP;
4947 } else {
4948 info = (struct filesystem_posix_info *)(rsp->Buffer);
ee81cae1 4949 info->OptimalTransferSize = cpu_to_le32(stfs.f_bsize);
e2f34481
NJ		 4950 info->BlockSize = cpu_to_le32(stfs.f_bsize);
4951 info->TotalBlocks = cpu_to_le64(stfs.f_blocks);
4952 info->BlocksAvail = cpu_to_le64(stfs.f_bfree);
4953 info->UserBlocksAvail = cpu_to_le64(stfs.f_bavail);
4954 info->TotalFileNodes = cpu_to_le64(stfs.f_files);
4955 info->FreeFileNodes = cpu_to_le64(stfs.f_ffree);
4956 rsp->OutputBufferLength = cpu_to_le32(56);
4957 inc_rfc1001_len(rsp_org, 56);
4958 fs_infoclass_size = FS_POSIX_INFORMATION_SIZE;
4959 }
4960 break;
4961 }
4962 default:
4963 path_put(&path);
4964 return -EOPNOTSUPP;
4965 }
4966 rc = buffer_check_err(le32_to_cpu(req->OutputBufferLength),
4967 rsp,
4968 fs_infoclass_size);
4969 path_put(&path);
4970 return rc;
4971}
4972
4973static int smb2_get_info_sec(struct ksmbd_work *work,
070fb21e
NJ		 4974 struct smb2_query_info_req *req,
4975 struct smb2_query_info_rsp *rsp, void *rsp_org)
e2f34481
NJ		 4976{
4977 struct ksmbd_file *fp;
465d7204 4978 struct user_namespace *user_ns;
e2f34481
NJ		 4979 struct smb_ntsd *pntsd = (struct smb_ntsd *)rsp->Buffer, *ppntsd = NULL;
4980 struct smb_fattr fattr = {{0}};
4981 struct inode *inode;
4982 __u32 secdesclen;
4983 unsigned int id = KSMBD_NO_FID, pid = KSMBD_NO_FID;
4984 int addition_info = le32_to_cpu(req->AdditionalInformation);
4985 int rc;
4986
e294f78d
NJ		 4987 if (addition_info & ~(OWNER_SECINFO | GROUP_SECINFO | DACL_SECINFO |
4988 PROTECTED_DACL_SECINFO |
4989 UNPROTECTED_DACL_SECINFO)) {
4990 pr_err("Unsupported addition info: 0x%x)\n",
4991 addition_info);
ced2b26a
SG		 4992
4993 pntsd->revision = cpu_to_le16(1);
4994 pntsd->type = cpu_to_le16(SELF_RELATIVE | DACL_PROTECTED);
4995 pntsd->osidoffset = 0;
4996 pntsd->gsidoffset = 0;
4997 pntsd->sacloffset = 0;
4998 pntsd->dacloffset = 0;
4999
5000 secdesclen = sizeof(struct smb_ntsd);
5001 rsp->OutputBufferLength = cpu_to_le32(secdesclen);
5002 inc_rfc1001_len(rsp_org, secdesclen);
5003
5004 return 0;
5005 }
5006
e2f34481 5007 if (work->next_smb2_rcv_hdr_off) {
3867369e
NJ		 5008 if (!has_file_id(le64_to_cpu(req->VolatileFileId))) {
5009 ksmbd_debug(SMB, "Compound request set FID = %llu\n",
070fb21e 5010 work->compound_fid);
e2f34481
NJ		 5011 id = work->compound_fid;
5012 pid = work->compound_pfid;
5013 }
5014 }
5015
3867369e 5016 if (!has_file_id(id)) {
e2f34481
NJ		 5017 id = le64_to_cpu(req->VolatileFileId);
5018 pid = le64_to_cpu(req->PersistentFileId);
5019 }
5020
5021 fp = ksmbd_lookup_fd_slow(work, id, pid);
5022 if (!fp)
5023 return -ENOENT;
5024
465d7204 5025 user_ns = file_mnt_user_ns(fp->filp);
ab0b263b 5026 inode = file_inode(fp->filp);
43205ca7 5027 ksmbd_acls_fattr(&fattr, user_ns, inode);
e2f34481
NJ		 5028
5029 if (test_share_config_flag(work->tcon->share_conf,
64b39f4a 5030 KSMBD_SHARE_FLAG_ACL_XATTR))
465d7204 5031 ksmbd_vfs_get_sd_xattr(work->conn, user_ns,
af34983e 5032 fp->filp->f_path.dentry, &ppntsd);
e2f34481 5033
465d7204
HL		 5034 rc = build_sec_desc(user_ns, pntsd, ppntsd, addition_info,
5035 &secdesclen, &fattr);
e2f34481
NJ		 5036 posix_acl_release(fattr.cf_acls);
5037 posix_acl_release(fattr.cf_dacls);
5038 kfree(ppntsd);
5039 ksmbd_fd_put(work, fp);
5040 if (rc)
5041 return rc;
5042
5043 rsp->OutputBufferLength = cpu_to_le32(secdesclen);
5044 inc_rfc1001_len(rsp_org, secdesclen);
5045 return 0;
5046}
5047
5048/**
5049 * smb2_query_info() - handler for smb2 query info command
5050 * @work: smb work containing query info request buffer
5051 *
5052 * Return: 0 on success, otherwise error
5053 */
5054int smb2_query_info(struct ksmbd_work *work)
5055{
5056 struct smb2_query_info_req *req;
5057 struct smb2_query_info_rsp *rsp, *rsp_org;
5058 int rc = 0;
5059
e5066499 5060 rsp_org = work->response_buf;
e2f34481
NJ		 5061 WORK_BUFFERS(work, req, rsp);
5062
5063 ksmbd_debug(SMB, "GOT query info request\n");
5064
5065 switch (req->InfoType) {
5066 case SMB2_O_INFO_FILE:
5067 ksmbd_debug(SMB, "GOT SMB2_O_INFO_FILE\n");
5068 rc = smb2_get_info_file(work, req, rsp, (void *)rsp_org);
5069 break;
5070 case SMB2_O_INFO_FILESYSTEM:
5071 ksmbd_debug(SMB, "GOT SMB2_O_INFO_FILESYSTEM\n");
5072 rc = smb2_get_info_filesystem(work, req, rsp, (void *)rsp_org);
5073 break;
5074 case SMB2_O_INFO_SECURITY:
5075 ksmbd_debug(SMB, "GOT SMB2_O_INFO_SECURITY\n");
5076 rc = smb2_get_info_sec(work, req, rsp, (void *)rsp_org);
5077 break;
5078 default:
5079 ksmbd_debug(SMB, "InfoType %d not supported yet\n",
070fb21e 5080 req->InfoType);
e2f34481
NJ		 5081 rc = -EOPNOTSUPP;
5082 }
5083
5084 if (rc < 0) {
5085 if (rc == -EACCES)
5086 rsp->hdr.Status = STATUS_ACCESS_DENIED;
5087 else if (rc == -ENOENT)
5088 rsp->hdr.Status = STATUS_FILE_CLOSED;
5089 else if (rc == -EIO)
5090 rsp->hdr.Status = STATUS_UNEXPECTED_IO_ERROR;
5091 else if (rc == -EOPNOTSUPP || rsp->hdr.Status == 0)
5092 rsp->hdr.Status = STATUS_INVALID_INFO_CLASS;
5093 smb2_set_err_rsp(work);
5094
5095 ksmbd_debug(SMB, "error while processing smb2 query rc = %d\n",
070fb21e 5096 rc);
e2f34481
NJ		 5097 return rc;
5098 }
5099 rsp->StructureSize = cpu_to_le16(9);
5100 rsp->OutputBufferOffset = cpu_to_le16(72);
5101 inc_rfc1001_len(rsp_org, 8);
5102 return 0;
5103}
5104
5105/**
5106 * smb2_close_pipe() - handler for closing IPC pipe
5107 * @work: smb work containing close request buffer
5108 *
5109 * Return: 0
5110 */
5111static noinline int smb2_close_pipe(struct ksmbd_work *work)
5112{
64b39f4a 5113 u64 id;
e5066499
NJ		 5114 struct smb2_close_req *req = work->request_buf;
5115 struct smb2_close_rsp *rsp = work->response_buf;
e2f34481
NJ		 5116
5117 id = le64_to_cpu(req->VolatileFileId);
5118 ksmbd_session_rpc_close(work->sess, id);
5119
5120 rsp->StructureSize = cpu_to_le16(60);
5121 rsp->Flags = 0;
5122 rsp->Reserved = 0;
5123 rsp->CreationTime = 0;
5124 rsp->LastAccessTime = 0;
5125 rsp->LastWriteTime = 0;
5126 rsp->ChangeTime = 0;
5127 rsp->AllocationSize = 0;
5128 rsp->EndOfFile = 0;
5129 rsp->Attributes = 0;
5130 inc_rfc1001_len(rsp, 60);
5131 return 0;
5132}
5133
5134/**
5135 * smb2_close() - handler for smb2 close file command
5136 * @work: smb work containing close request buffer
5137 *
5138 * Return: 0
5139 */
5140int smb2_close(struct ksmbd_work *work)
5141{
3867369e 5142 u64 volatile_id = KSMBD_NO_FID;
64b39f4a 5143 u64 sess_id;
e2f34481
NJ		 5144 struct smb2_close_req *req;
5145 struct smb2_close_rsp *rsp;
5146 struct smb2_close_rsp *rsp_org;
5147 struct ksmbd_conn *conn = work->conn;
5148 struct ksmbd_file *fp;
5149 struct inode *inode;
5150 u64 time;
5151 int err = 0;
5152
e5066499 5153 rsp_org = work->response_buf;
e2f34481
NJ		 5154 WORK_BUFFERS(work, req, rsp);
5155
5156 if (test_share_config_flag(work->tcon->share_conf,
5157 KSMBD_SHARE_FLAG_PIPE)) {
5158 ksmbd_debug(SMB, "IPC pipe close request\n");
5159 return smb2_close_pipe(work);
5160 }
5161
5162 sess_id = le64_to_cpu(req->hdr.SessionId);
5163 if (req->hdr.Flags & SMB2_FLAGS_RELATED_OPERATIONS)
5164 sess_id = work->compound_sid;
5165
5166 work->compound_sid = 0;
64b39f4a 5167 if (check_session_id(conn, sess_id)) {
e2f34481 5168 work->compound_sid = sess_id;
64b39f4a 5169 } else {
e2f34481
NJ		 5170 rsp->hdr.Status = STATUS_USER_SESSION_DELETED;
5171 if (req->hdr.Flags & SMB2_FLAGS_RELATED_OPERATIONS)
5172 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
5173 err = -EBADF;
5174 goto out;
5175 }
5176
5177 if (work->next_smb2_rcv_hdr_off &&
3867369e
NJ		 5178 !has_file_id(le64_to_cpu(req->VolatileFileId))) {
5179 if (!has_file_id(work->compound_fid)) {
e2f34481
NJ		 5180 /* file already closed, return FILE_CLOSED */
5181 ksmbd_debug(SMB, "file already closed\n");
5182 rsp->hdr.Status = STATUS_FILE_CLOSED;
5183 err = -EBADF;
5184 goto out;
5185 } else {
3867369e
NJ		 5186 ksmbd_debug(SMB,
5187 "Compound request set FID = %llu:%llu\n",
070fb21e
NJ		 5188 work->compound_fid,
5189 work->compound_pfid);
e2f34481
NJ		 5190 volatile_id = work->compound_fid;
5191
5192 /* file closed, stored id is not valid anymore */
5193 work->compound_fid = KSMBD_NO_FID;
5194 work->compound_pfid = KSMBD_NO_FID;
5195 }
5196 } else {
5197 volatile_id = le64_to_cpu(req->VolatileFileId);
5198 }
3867369e 5199 ksmbd_debug(SMB, "volatile_id = %llu\n", volatile_id);
e2f34481
NJ		 5200
5201 rsp->StructureSize = cpu_to_le16(60);
5202 rsp->Reserved = 0;
5203
5204 if (req->Flags == SMB2_CLOSE_FLAG_POSTQUERY_ATTRIB) {
5205 fp = ksmbd_lookup_fd_fast(work, volatile_id);
5206 if (!fp) {
5207 err = -ENOENT;
5208 goto out;
5209 }
5210
ab0b263b 5211 inode = file_inode(fp->filp);
e2f34481
NJ		 5212 rsp->Flags = SMB2_CLOSE_FLAG_POSTQUERY_ATTRIB;
5213 rsp->AllocationSize = S_ISDIR(inode->i_mode) ? 0 :
5214 cpu_to_le64(inode->i_blocks << 9);
5215 rsp->EndOfFile = cpu_to_le64(inode->i_size);
5216 rsp->Attributes = fp->f_ci->m_fattr;
5217 rsp->CreationTime = cpu_to_le64(fp->create_time);
5218 time = ksmbd_UnixTimeToNT(inode->i_atime);
5219 rsp->LastAccessTime = cpu_to_le64(time);
5220 time = ksmbd_UnixTimeToNT(inode->i_mtime);
5221 rsp->LastWriteTime = cpu_to_le64(time);
5222 time = ksmbd_UnixTimeToNT(inode->i_ctime);
5223 rsp->ChangeTime = cpu_to_le64(time);
5224 ksmbd_fd_put(work, fp);
5225 } else {
5226 rsp->Flags = 0;
5227 rsp->AllocationSize = 0;
5228 rsp->EndOfFile = 0;
5229 rsp->Attributes = 0;
5230 rsp->CreationTime = 0;
5231 rsp->LastAccessTime = 0;
5232 rsp->LastWriteTime = 0;
5233 rsp->ChangeTime = 0;
5234 }
5235
5236 err = ksmbd_close_fd(work, volatile_id);
5237out:
5238 if (err) {
5239 if (rsp->hdr.Status == 0)
5240 rsp->hdr.Status = STATUS_FILE_CLOSED;
5241 smb2_set_err_rsp(work);
5242 } else {
5243 inc_rfc1001_len(rsp_org, 60);
5244 }
5245
5246 return 0;
5247}
5248
5249/**
5250 * smb2_echo() - handler for smb2 echo(ping) command
5251 * @work: smb work containing echo request buffer
5252 *
5253 * Return: 0
5254 */
5255int smb2_echo(struct ksmbd_work *work)
5256{
e5066499 5257 struct smb2_echo_rsp *rsp = work->response_buf;
e2f34481
NJ		 5258
5259 rsp->StructureSize = cpu_to_le16(4);
5260 rsp->Reserved = 0;
5261 inc_rfc1001_len(rsp, 4);
5262 return 0;
5263}
5264
da1e7ada
CB		 5265static int smb2_rename(struct ksmbd_work *work,
5266 struct ksmbd_file *fp,
5267 struct user_namespace *user_ns,
070fb21e
NJ		 5268 struct smb2_file_rename_info *file_info,
5269 struct nls_table *local_nls)
e2f34481
NJ		 5270{
5271 struct ksmbd_share_config *share = fp->tcon->share_conf;
5272 char *new_name = NULL, *abs_oldname = NULL, *old_name = NULL;
5273 char *pathname = NULL;
5274 struct path path;
5275 bool file_present = true;
5276 int rc;
5277
5278 ksmbd_debug(SMB, "setting FILE_RENAME_INFO\n");
5279 pathname = kmalloc(PATH_MAX, GFP_KERNEL);
5280 if (!pathname)
5281 return -ENOMEM;
5282
5283 abs_oldname = d_path(&fp->filp->f_path, pathname, PATH_MAX);
5284 if (IS_ERR(abs_oldname)) {
5285 rc = -EINVAL;
5286 goto out;
5287 }
5288 old_name = strrchr(abs_oldname, '/');
64b39f4a 5289 if (old_name && old_name[1] != '\0') {
e2f34481 5290 old_name++;
64b39f4a 5291 } else {
e2f34481 5292 ksmbd_debug(SMB, "can't get last component in path %s\n",
070fb21e 5293 abs_oldname);
e2f34481
NJ		 5294 rc = -ENOENT;
5295 goto out;
5296 }
5297
5298 new_name = smb2_get_name(share,
5299 file_info->FileName,
5300 le32_to_cpu(file_info->FileNameLength),
5301 local_nls);
5302 if (IS_ERR(new_name)) {
5303 rc = PTR_ERR(new_name);
5304 goto out;
5305 }
5306
5307 if (strchr(new_name, ':')) {
5308 int s_type;
5309 char *xattr_stream_name, *stream_name = NULL;
5310 size_t xattr_stream_size;
5311 int len;
5312
5313 rc = parse_stream_name(new_name, &stream_name, &s_type);
5314 if (rc < 0)
5315 goto out;
5316
5317 len = strlen(new_name);
265fd199 5318 if (len > 0 && new_name[len - 1] != '/') {
bde1694a 5319 pr_err("not allow base filename in rename\n");
e2f34481
NJ		 5320 rc = -ESHARE;
5321 goto out;
5322 }
5323
5324 rc = ksmbd_vfs_xattr_stream_name(stream_name,
5325 &xattr_stream_name,
5326 &xattr_stream_size,
5327 s_type);
5328 if (rc)
5329 goto out;
5330
da1e7ada 5331 rc = ksmbd_vfs_setxattr(user_ns,
af34983e 5332 fp->filp->f_path.dentry,
e2f34481
NJ		 5333 xattr_stream_name,
5334 NULL, 0, 0);
5335 if (rc < 0) {
bde1694a
NJ		 5336 pr_err("failed to store stream name in xattr: %d\n",
5337 rc);
e2f34481
NJ		 5338 rc = -EINVAL;
5339 goto out;
5340 }
5341
5342 goto out;
5343 }
5344
5345 ksmbd_debug(SMB, "new name %s\n", new_name);
265fd199
HL		 5346 rc = ksmbd_vfs_kern_path(work, new_name, LOOKUP_NO_SYMLINKS, &path, 1);
5347 if (rc) {
5348 if (rc != -ENOENT)
5349 goto out;
e2f34481 5350 file_present = false;
265fd199 5351 } else {
e2f34481 5352 path_put(&path);
265fd199 5353 }
e2f34481
NJ		 5354
5355 if (ksmbd_share_veto_filename(share, new_name)) {
5356 rc = -ENOENT;
5357 ksmbd_debug(SMB, "Can't rename vetoed file: %s\n", new_name);
5358 goto out;
5359 }
5360
5361 if (file_info->ReplaceIfExists) {
5362 if (file_present) {
5363 rc = ksmbd_vfs_remove_file(work, new_name);
5364 if (rc) {
5365 if (rc != -ENOTEMPTY)
5366 rc = -EINVAL;
5367 ksmbd_debug(SMB, "cannot delete %s, rc %d\n",
070fb21e 5368 new_name, rc);
e2f34481
NJ		 5369 goto out;
5370 }
5371 }
5372 } else {
5373 if (file_present &&
64b39f4a 5374 strncmp(old_name, path.dentry->d_name.name, strlen(old_name))) {
e2f34481
NJ		 5375 rc = -EEXIST;
5376 ksmbd_debug(SMB,
070fb21e 5377 "cannot rename already existing file\n");
e2f34481
NJ		 5378 goto out;
5379 }
5380 }
5381
5382 rc = ksmbd_vfs_fp_rename(work, fp, new_name);
5383out:
5384 kfree(pathname);
5385 if (!IS_ERR(new_name))
915f570a 5386 kfree(new_name);
e2f34481
NJ		 5387 return rc;
5388}
5389
e2f34481 5390static int smb2_create_link(struct ksmbd_work *work,
070fb21e
NJ		 5391 struct ksmbd_share_config *share,
5392 struct smb2_file_link_info *file_info,
9496e268 5393 unsigned int buf_len, struct file *filp,
070fb21e 5394 struct nls_table *local_nls)
e2f34481
NJ		 5395{
5396 char *link_name = NULL, *target_name = NULL, *pathname = NULL;
5397 struct path path;
5398 bool file_present = true;
5399 int rc;
5400
9496e268
NJ		 5401 if (buf_len < (u64)sizeof(struct smb2_file_link_info) +
5402 le32_to_cpu(file_info->FileNameLength))
5403 return -EINVAL;
5404
e2f34481
NJ		 5405 ksmbd_debug(SMB, "setting FILE_LINK_INFORMATION\n");
5406 pathname = kmalloc(PATH_MAX, GFP_KERNEL);
5407 if (!pathname)
5408 return -ENOMEM;
5409
5410 link_name = smb2_get_name(share,
5411 file_info->FileName,
5412 le32_to_cpu(file_info->FileNameLength),
5413 local_nls);
5414 if (IS_ERR(link_name) || S_ISDIR(file_inode(filp)->i_mode)) {
5415 rc = -EINVAL;
5416 goto out;
5417 }
5418
5419 ksmbd_debug(SMB, "link name is %s\n", link_name);
5420 target_name = d_path(&filp->f_path, pathname, PATH_MAX);
5421 if (IS_ERR(target_name)) {
5422 rc = -EINVAL;
5423 goto out;
5424 }
5425
5426 ksmbd_debug(SMB, "target name is %s\n", target_name);
265fd199
HL		 5427 rc = ksmbd_vfs_kern_path(work, link_name, LOOKUP_NO_SYMLINKS, &path, 0);
5428 if (rc) {
5429 if (rc != -ENOENT)
5430 goto out;
e2f34481 5431 file_present = false;
265fd199 5432 } else {
e2f34481 5433 path_put(&path);
265fd199 5434 }
e2f34481
NJ		 5435
5436 if (file_info->ReplaceIfExists) {
5437 if (file_present) {
5438 rc = ksmbd_vfs_remove_file(work, link_name);
5439 if (rc) {
5440 rc = -EINVAL;
5441 ksmbd_debug(SMB, "cannot delete %s\n",
070fb21e 5442 link_name);
e2f34481
NJ		 5443 goto out;
5444 }
5445 }
5446 } else {
5447 if (file_present) {
5448 rc = -EEXIST;
5449 ksmbd_debug(SMB, "link already exists\n");
5450 goto out;
5451 }
5452 }
5453
5454 rc = ksmbd_vfs_link(work, target_name, link_name);
5455 if (rc)
5456 rc = -EINVAL;
5457out:
5458 if (!IS_ERR(link_name))
915f570a 5459 kfree(link_name);
e2f34481
NJ		 5460 kfree(pathname);
5461 return rc;
5462}
5463
9496e268
NJ		 5464static int set_file_basic_info(struct ksmbd_file *fp,
5465 struct smb2_file_basic_info *file_info,
070fb21e 5466 struct ksmbd_share_config *share)
e2f34481 5467{
e2f34481 5468 struct iattr attrs;
e2f34481
NJ		 5469 struct file *filp;
5470 struct inode *inode;
465d7204 5471 struct user_namespace *user_ns;
4ffd5264 5472 int rc = 0;
e2f34481 5473
7adfd4f6 5474 if (!(fp->daccess & FILE_WRITE_ATTRIBUTES_LE))
e2f34481
NJ		 5475 return -EACCES;
5476
e2f34481
NJ		 5477 attrs.ia_valid = 0;
5478 filp = fp->filp;
5479 inode = file_inode(filp);
465d7204 5480 user_ns = file_mnt_user_ns(filp);
e2f34481
NJ		 5481
5482 if (file_info->CreationTime)
5483 fp->create_time = le64_to_cpu(file_info->CreationTime);
5484
5485 if (file_info->LastAccessTime) {
5486 attrs.ia_atime = ksmbd_NTtimeToUnix(file_info->LastAccessTime);
5487 attrs.ia_valid |= (ATTR_ATIME | ATTR_ATIME_SET);
5488 }
5489
64e78755
NJ		 5490 attrs.ia_valid |= ATTR_CTIME;
5491 if (file_info->ChangeTime)
db7fb6fe 5492 attrs.ia_ctime = ksmbd_NTtimeToUnix(file_info->ChangeTime);
64e78755
NJ		 5493 else
5494 attrs.ia_ctime = inode->i_ctime;
e2f34481
NJ		 5495
5496 if (file_info->LastWriteTime) {
5497 attrs.ia_mtime = ksmbd_NTtimeToUnix(file_info->LastWriteTime);
5498 attrs.ia_valid |= (ATTR_MTIME | ATTR_MTIME_SET);
5499 }
5500
5501 if (file_info->Attributes) {
5502 if (!S_ISDIR(inode->i_mode) &&
64b39f4a 5503 file_info->Attributes & ATTR_DIRECTORY_LE) {
bde1694a 5504 pr_err("can't change a file to a directory\n");
e2f34481
NJ		 5505 return -EINVAL;
5506 }
5507
5508 if (!(S_ISDIR(inode->i_mode) && file_info->Attributes == ATTR_NORMAL_LE))
5509 fp->f_ci->m_fattr = file_info->Attributes |
5510 (fp->f_ci->m_fattr & ATTR_DIRECTORY_LE);
5511 }
5512
5513 if (test_share_config_flag(share, KSMBD_SHARE_FLAG_STORE_DOS_ATTRS) &&
5514 (file_info->CreationTime || file_info->Attributes)) {
5515 struct xattr_dos_attrib da = {0};
5516
5517 da.version = 4;
5518 da.itime = fp->itime;
5519 da.create_time = fp->create_time;
5520 da.attr = le32_to_cpu(fp->f_ci->m_fattr);
5521 da.flags = XATTR_DOSINFO_ATTRIB | XATTR_DOSINFO_CREATE_TIME |
5522 XATTR_DOSINFO_ITIME;
5523
465d7204 5524 rc = ksmbd_vfs_set_dos_attrib_xattr(user_ns,
af34983e 5525 filp->f_path.dentry, &da);
e2f34481
NJ		 5526 if (rc)
5527 ksmbd_debug(SMB,
070fb21e 5528 "failed to restore file attribute in EA\n");
e2f34481
NJ		 5529 rc = 0;
5530 }
5531
e2f34481
NJ		 5532 if (attrs.ia_valid) {
5533 struct dentry *dentry = filp->f_path.dentry;
5534 struct inode *inode = d_inode(dentry);
5535
5536 if (IS_IMMUTABLE(inode) || IS_APPEND(inode))
5537 return -EACCES;
5538
e2f34481 5539 inode_lock(inode);
64e78755
NJ		 5540 inode->i_ctime = attrs.ia_ctime;
5541 attrs.ia_valid &= ~ATTR_CTIME;
465d7204 5542 rc = notify_change(user_ns, dentry, &attrs, NULL);
e2f34481
NJ		 5543 inode_unlock(inode);
5544 }
eb5784f0 5545 return rc;
e2f34481
NJ		 5546}
5547
5548static int set_file_allocation_info(struct ksmbd_work *work,
9496e268
NJ		 5549 struct ksmbd_file *fp,
5550 struct smb2_file_alloc_info *file_alloc_info)
e2f34481
NJ		 5551{
5552 /*
5553 * TODO : It's working fine only when store dos attributes
5554 * is not yes. need to implement a logic which works
5555 * properly with any smb.conf option
5556 */
5557
e2f34481
NJ		 5558 loff_t alloc_blks;
5559 struct inode *inode;
5560 int rc;
5561
a299669b 5562 if (!(fp->daccess & FILE_WRITE_DATA_LE))
e2f34481
NJ		 5563 return -EACCES;
5564
e2f34481
NJ		 5565 alloc_blks = (le64_to_cpu(file_alloc_info->AllocationSize) + 511) >> 9;
5566 inode = file_inode(fp->filp);
5567
5568 if (alloc_blks > inode->i_blocks) {
e8c06191
NJ		 5569 smb_break_all_levII_oplock(work, fp, 1);
5570 rc = vfs_fallocate(fp->filp, FALLOC_FL_KEEP_SIZE, 0,
5571 alloc_blks * 512);
e2f34481 5572 if (rc && rc != -EOPNOTSUPP) {
e8c06191 5573 pr_err("vfs_fallocate is failed : %d\n", rc);
e2f34481
NJ		 5574 return rc;
5575 }
5576 } else if (alloc_blks < inode->i_blocks) {
5577 loff_t size;
5578
5579 /*
5580 * Allocation size could be smaller than original one
5581 * which means allocated blocks in file should be
5582 * deallocated. use truncate to cut out it, but inode
5583 * size is also updated with truncate offset.
5584 * inode size is retained by backup inode size.
5585 */
5586 size = i_size_read(inode);
265fd199 5587 rc = ksmbd_vfs_truncate(work, fp, alloc_blks * 512);
e2f34481 5588 if (rc) {
bde1694a
NJ		 5589 pr_err("truncate failed! filename : %s, err %d\n",
5590 fp->filename, rc);
e2f34481
NJ		 5591 return rc;
5592 }
5593 if (size < alloc_blks * 512)
5594 i_size_write(inode, size);
5595 }
5596 return 0;
5597}
5598
64b39f4a 5599static int set_end_of_file_info(struct ksmbd_work *work, struct ksmbd_file *fp,
9496e268 5600 struct smb2_file_eof_info *file_eof_info)
e2f34481 5601{
e2f34481
NJ		 5602 loff_t newsize;
5603 struct inode *inode;
5604 int rc;
5605
a299669b 5606 if (!(fp->daccess & FILE_WRITE_DATA_LE))
e2f34481
NJ		 5607 return -EACCES;
5608
e2f34481
NJ		 5609 newsize = le64_to_cpu(file_eof_info->EndOfFile);
5610 inode = file_inode(fp->filp);
5611
5612 /*
5613 * If FILE_END_OF_FILE_INFORMATION of set_info_file is called
5614 * on FAT32 shared device, truncate execution time is too long
5615 * and network error could cause from windows client. because
5616 * truncate of some filesystem like FAT32 fill zero data in
5617 * truncated range.
5618 */
5619 if (inode->i_sb->s_magic != MSDOS_SUPER_MAGIC) {
5620 ksmbd_debug(SMB, "filename : %s truncated to newsize %lld\n",
070fb21e 5621 fp->filename, newsize);
265fd199 5622 rc = ksmbd_vfs_truncate(work, fp, newsize);
e2f34481 5623 if (rc) {
64b39f4a 5624 ksmbd_debug(SMB, "truncate failed! filename : %s err %d\n",
070fb21e 5625 fp->filename, rc);
e2f34481
NJ		 5626 if (rc != -EAGAIN)
5627 rc = -EBADF;
5628 return rc;
5629 }
5630 }
5631 return 0;
5632}
5633
64b39f4a 5634static int set_rename_info(struct ksmbd_work *work, struct ksmbd_file *fp,
9496e268
NJ		 5635 struct smb2_file_rename_info *rename_info,
5636 unsigned int buf_len)
e2f34481 5637{
da1e7ada 5638 struct user_namespace *user_ns;
e2f34481 5639 struct ksmbd_file *parent_fp;
12202c05
NJ		 5640 struct dentry *parent;
5641 struct dentry *dentry = fp->filp->f_path.dentry;
5642 int ret;
e2f34481
NJ		 5643
5644 if (!(fp->daccess & FILE_DELETE_LE)) {
bde1694a 5645 pr_err("no right to delete : 0x%x\n", fp->daccess);
e2f34481
NJ		 5646 return -EACCES;
5647 }
5648
9496e268
NJ		 5649 if (buf_len < (u64)sizeof(struct smb2_file_rename_info) +
5650 le32_to_cpu(rename_info->FileNameLength))
5651 return -EINVAL;
5652
da1e7ada 5653 user_ns = file_mnt_user_ns(fp->filp);
e2f34481
NJ		 5654 if (ksmbd_stream_fd(fp))
5655 goto next;
5656
12202c05 5657 parent = dget_parent(dentry);
da1e7ada 5658 ret = ksmbd_vfs_lock_parent(user_ns, parent, dentry);
12202c05
NJ		 5659 if (ret) {
5660 dput(parent);
5661 return ret;
5662 }
5663
5664 parent_fp = ksmbd_lookup_fd_inode(d_inode(parent));
5665 inode_unlock(d_inode(parent));
5666 dput(parent);
5667
e2f34481
NJ		 5668 if (parent_fp) {
5669 if (parent_fp->daccess & FILE_DELETE_LE) {
bde1694a 5670 pr_err("parent dir is opened with delete access\n");
e2f34481
NJ		 5671 return -ESHARE;
5672 }
5673 }
5674next:
9496e268 5675 return smb2_rename(work, fp, user_ns, rename_info,
e2f34481
NJ		 5676 work->sess->conn->local_nls);
5677}
5678
9496e268
NJ		 5679static int set_file_disposition_info(struct ksmbd_file *fp,
5680 struct smb2_file_disposition_info *file_info)
e2f34481 5681{
e2f34481
NJ		 5682 struct inode *inode;
5683
5684 if (!(fp->daccess & FILE_DELETE_LE)) {
bde1694a 5685 pr_err("no right to delete : 0x%x\n", fp->daccess);
e2f34481
NJ		 5686 return -EACCES;
5687 }
5688
5689 inode = file_inode(fp->filp);
e2f34481
NJ		 5690 if (file_info->DeletePending) {
5691 if (S_ISDIR(inode->i_mode) &&
64b39f4a 5692 ksmbd_vfs_empty_dir(fp) == -ENOTEMPTY)
e2f34481
NJ		 5693 return -EBUSY;
5694 ksmbd_set_inode_pending_delete(fp);
5695 } else {
5696 ksmbd_clear_inode_pending_delete(fp);
5697 }
5698 return 0;
5699}
5700
9496e268
NJ		 5701static int set_file_position_info(struct ksmbd_file *fp,
5702 struct smb2_file_pos_info *file_info)
e2f34481 5703{
e2f34481 5704 loff_t current_byte_offset;
ee81cae1 5705 unsigned long sector_size;
e2f34481
NJ		 5706 struct inode *inode;
5707
5708 inode = file_inode(fp->filp);
e2f34481 5709 current_byte_offset = le64_to_cpu(file_info->CurrentByteOffset);
ee81cae1 5710 sector_size = inode->i_sb->s_blocksize;
e2f34481
NJ		 5711
5712 if (current_byte_offset < 0 ||
64b39f4a
NJ		 5713 (fp->coption == FILE_NO_INTERMEDIATE_BUFFERING_LE &&
5714 current_byte_offset & (sector_size - 1))) {
bde1694a
NJ		 5715 pr_err("CurrentByteOffset is not valid : %llu\n",
5716 current_byte_offset);
e2f34481
NJ		 5717 return -EINVAL;
5718 }
5719
5720 fp->filp->f_pos = current_byte_offset;
5721 return 0;
5722}
5723
9496e268
NJ		 5724static int set_file_mode_info(struct ksmbd_file *fp,
5725 struct smb2_file_mode_info *file_info)
e2f34481 5726{
e2f34481
NJ		 5727 __le32 mode;
5728
e2f34481
NJ		 5729 mode = file_info->Mode;
5730
64b39f4a
NJ		 5731 if ((mode & ~FILE_MODE_INFO_MASK) ||
5732 (mode & FILE_SYNCHRONOUS_IO_ALERT_LE &&
5733 mode & FILE_SYNCHRONOUS_IO_NONALERT_LE)) {
bde1694a 5734 pr_err("Mode is not valid : 0x%x\n", le32_to_cpu(mode));
e2f34481
NJ		 5735 return -EINVAL;
5736 }
5737
5738 /*
5739 * TODO : need to implement consideration for
5740 * FILE_SYNCHRONOUS_IO_ALERT and FILE_SYNCHRONOUS_IO_NONALERT
5741 */
5742 ksmbd_vfs_set_fadvise(fp->filp, mode);
5743 fp->coption = mode;
5744 return 0;
5745}
5746
5747/**
5748 * smb2_set_info_file() - handler for smb2 set info command
5749 * @work: smb work containing set info command buffer
95fa1ce9
HL		 5750 * @fp: ksmbd_file pointer
5751 * @info_class: smb2 set info class
5752 * @share: ksmbd_share_config pointer
e2f34481
NJ		 5753 *
5754 * Return: 0 on success, otherwise error
5755 * TODO: need to implement an error handling for STATUS_INFO_LENGTH_MISMATCH
5756 */
64b39f4a 5757static int smb2_set_info_file(struct ksmbd_work *work, struct ksmbd_file *fp,
9496e268 5758 struct smb2_set_info_req *req,
070fb21e 5759 struct ksmbd_share_config *share)
e2f34481 5760{
9496e268
NJ		 5761 unsigned int buf_len = le32_to_cpu(req->BufferLength);
5762
5763 switch (req->FileInfoClass) {
e2f34481 5764 case FILE_BASIC_INFORMATION:
9496e268
NJ		 5765 {
5766 if (buf_len < sizeof(struct smb2_file_basic_info))
5767 return -EINVAL;
e2f34481 5768
9496e268
NJ		 5769 return set_file_basic_info(fp, (struct smb2_file_basic_info *)req->Buffer, share);
5770 }
e2f34481 5771 case FILE_ALLOCATION_INFORMATION:
9496e268
NJ		 5772 {
5773 if (buf_len < sizeof(struct smb2_file_alloc_info))
5774 return -EINVAL;
e2f34481 5775
9496e268
NJ		 5776 return set_file_allocation_info(work, fp,
5777 (struct smb2_file_alloc_info *)req->Buffer);
5778 }
e2f34481 5779 case FILE_END_OF_FILE_INFORMATION:
9496e268
NJ		 5780 {
5781 if (buf_len < sizeof(struct smb2_file_eof_info))
5782 return -EINVAL;
e2f34481 5783
9496e268
NJ		 5784 return set_end_of_file_info(work, fp,
5785 (struct smb2_file_eof_info *)req->Buffer);
5786 }
e2f34481 5787 case FILE_RENAME_INFORMATION:
9496e268 5788 {
64b39f4a 5789 if (!test_tree_conn_flag(work->tcon, KSMBD_TREE_CONN_FLAG_WRITABLE)) {
e2f34481 5790 ksmbd_debug(SMB,
070fb21e 5791 "User does not have write permission\n");
e2f34481
NJ		 5792 return -EACCES;
5793 }
e2f34481 5794
9496e268
NJ		 5795 if (buf_len < sizeof(struct smb2_file_rename_info))
5796 return -EINVAL;
5797
5798 return set_rename_info(work, fp,
5799 (struct smb2_file_rename_info *)req->Buffer,
5800 buf_len);
5801 }
e2f34481 5802 case FILE_LINK_INFORMATION:
9496e268
NJ		 5803 {
5804 if (buf_len < sizeof(struct smb2_file_link_info))
5805 return -EINVAL;
5806
e2f34481 5807 return smb2_create_link(work, work->tcon->share_conf,
9496e268
NJ		 5808 (struct smb2_file_link_info *)req->Buffer,
5809 buf_len, fp->filp,
070fb21e 5810 work->sess->conn->local_nls);
9496e268 5811 }
e2f34481 5812 case FILE_DISPOSITION_INFORMATION:
9496e268 5813 {
64b39f4a 5814 if (!test_tree_conn_flag(work->tcon, KSMBD_TREE_CONN_FLAG_WRITABLE)) {
e2f34481 5815 ksmbd_debug(SMB,
070fb21e 5816 "User does not have write permission\n");
e2f34481
NJ		 5817 return -EACCES;
5818 }
e2f34481 5819
9496e268
NJ		 5820 if (buf_len < sizeof(struct smb2_file_disposition_info))
5821 return -EINVAL;
5822
5823 return set_file_disposition_info(fp,
5824 (struct smb2_file_disposition_info *)req->Buffer);
5825 }
e2f34481
NJ		 5826 case FILE_FULL_EA_INFORMATION:
5827 {
5828 if (!(fp->daccess & FILE_WRITE_EA_LE)) {
bde1694a
NJ		 5829 pr_err("Not permitted to write ext attr: 0x%x\n",
5830 fp->daccess);
e2f34481
NJ		 5831 return -EACCES;
5832 }
5833
9496e268
NJ		 5834 if (buf_len < sizeof(struct smb2_ea_info))
5835 return -EINVAL;
e2f34481 5836
9496e268
NJ		 5837 return smb2_set_ea((struct smb2_ea_info *)req->Buffer,
5838 buf_len, &fp->filp->f_path);
5839 }
e2f34481 5840 case FILE_POSITION_INFORMATION:
9496e268
NJ		 5841 {
5842 if (buf_len < sizeof(struct smb2_file_pos_info))
5843 return -EINVAL;
e2f34481 5844
9496e268
NJ		 5845 return set_file_position_info(fp, (struct smb2_file_pos_info *)req->Buffer);
5846 }
e2f34481 5847 case FILE_MODE_INFORMATION:
9496e268
NJ		 5848 {
5849 if (buf_len < sizeof(struct smb2_file_mode_info))
5850 return -EINVAL;
5851
5852 return set_file_mode_info(fp, (struct smb2_file_mode_info *)req->Buffer);
5853 }
e2f34481
NJ		 5854 }
5855
9496e268 5856 pr_err("Unimplemented Fileinfoclass :%d\n", req->FileInfoClass);
e2f34481
NJ		 5857 return -EOPNOTSUPP;
5858}
5859
64b39f4a 5860static int smb2_set_info_sec(struct ksmbd_file *fp, int addition_info,
070fb21e 5861 char *buffer, int buf_len)
e2f34481
NJ		 5862{
5863 struct smb_ntsd *pntsd = (struct smb_ntsd *)buffer;
5864
5865 fp->saccess |= FILE_SHARE_DELETE_LE;
5866
ef24c962 5867 return set_info_sec(fp->conn, fp->tcon, &fp->filp->f_path, pntsd,
e2f34481
NJ		 5868 buf_len, false);
5869}
5870
5871/**
5872 * smb2_set_info() - handler for smb2 set info command handler
5873 * @work: smb work containing set info request buffer
5874 *
5875 * Return: 0 on success, otherwise error
5876 */
5877int smb2_set_info(struct ksmbd_work *work)
5878{
5879 struct smb2_set_info_req *req;
5880 struct smb2_set_info_rsp *rsp, *rsp_org;
5881 struct ksmbd_file *fp;
5882 int rc = 0;
5883 unsigned int id = KSMBD_NO_FID, pid = KSMBD_NO_FID;
5884
5885 ksmbd_debug(SMB, "Received set info request\n");
5886
e5066499 5887 rsp_org = work->response_buf;
e2f34481 5888 if (work->next_smb2_rcv_hdr_off) {
8a893315
NJ		 5889 req = ksmbd_req_buf_next(work);
5890 rsp = ksmbd_resp_buf_next(work);
3867369e
NJ		 5891 if (!has_file_id(le64_to_cpu(req->VolatileFileId))) {
5892 ksmbd_debug(SMB, "Compound request set FID = %llu\n",
070fb21e 5893 work->compound_fid);
e2f34481
NJ		 5894 id = work->compound_fid;
5895 pid = work->compound_pfid;
5896 }
5897 } else {
e5066499
NJ		 5898 req = work->request_buf;
5899 rsp = work->response_buf;
e2f34481
NJ		 5900 }
5901
3867369e 5902 if (!has_file_id(id)) {
e2f34481
NJ		 5903 id = le64_to_cpu(req->VolatileFileId);
5904 pid = le64_to_cpu(req->PersistentFileId);
5905 }
5906
5907 fp = ksmbd_lookup_fd_slow(work, id, pid);
5908 if (!fp) {
5909 ksmbd_debug(SMB, "Invalid id for close: %u\n", id);
5910 rc = -ENOENT;
5911 goto err_out;
5912 }
5913
5914 switch (req->InfoType) {
5915 case SMB2_O_INFO_FILE:
5916 ksmbd_debug(SMB, "GOT SMB2_O_INFO_FILE\n");
9496e268 5917 rc = smb2_set_info_file(work, fp, req, work->tcon->share_conf);
e2f34481
NJ		 5918 break;
5919 case SMB2_O_INFO_SECURITY:
5920 ksmbd_debug(SMB, "GOT SMB2_O_INFO_SECURITY\n");
e70e392f
NJ		 5921 if (ksmbd_override_fsids(work)) {
5922 rc = -ENOMEM;
5923 goto err_out;
5924 }
e2f34481 5925 rc = smb2_set_info_sec(fp,
070fb21e
NJ		 5926 le32_to_cpu(req->AdditionalInformation),
5927 req->Buffer,
5928 le32_to_cpu(req->BufferLength));
e70e392f 5929 ksmbd_revert_fsids(work);
e2f34481
NJ		 5930 break;
5931 default:
5932 rc = -EOPNOTSUPP;
5933 }
5934
5935 if (rc < 0)
5936 goto err_out;
5937
5938 rsp->StructureSize = cpu_to_le16(2);
5939 inc_rfc1001_len(rsp_org, 2);
5940 ksmbd_fd_put(work, fp);
5941 return 0;
5942
5943err_out:
265fd199 5944 if (rc == -EACCES || rc == -EPERM || rc == -EXDEV)
e2f34481
NJ		 5945 rsp->hdr.Status = STATUS_ACCESS_DENIED;
5946 else if (rc == -EINVAL)
5947 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
5948 else if (rc == -ESHARE)
5949 rsp->hdr.Status = STATUS_SHARING_VIOLATION;
5950 else if (rc == -ENOENT)
5951 rsp->hdr.Status = STATUS_OBJECT_NAME_INVALID;
5952 else if (rc == -EBUSY || rc == -ENOTEMPTY)
5953 rsp->hdr.Status = STATUS_DIRECTORY_NOT_EMPTY;
5954 else if (rc == -EAGAIN)
5955 rsp->hdr.Status = STATUS_FILE_LOCK_CONFLICT;
ff1d5727 5956 else if (rc == -EBADF || rc == -ESTALE)
e2f34481
NJ		 5957 rsp->hdr.Status = STATUS_INVALID_HANDLE;
5958 else if (rc == -EEXIST)
5959 rsp->hdr.Status = STATUS_OBJECT_NAME_COLLISION;
5960 else if (rsp->hdr.Status == 0 || rc == -EOPNOTSUPP)
5961 rsp->hdr.Status = STATUS_INVALID_INFO_CLASS;
5962 smb2_set_err_rsp(work);
5963 ksmbd_fd_put(work, fp);
070fb21e 5964 ksmbd_debug(SMB, "error while processing smb2 query rc = %d\n", rc);
e2f34481
NJ		 5965 return rc;
5966}
5967
5968/**
5969 * smb2_read_pipe() - handler for smb2 read from IPC pipe
5970 * @work: smb work containing read IPC pipe command buffer
5971 *
5972 * Return: 0 on success, otherwise error
5973 */
5974static noinline int smb2_read_pipe(struct ksmbd_work *work)
5975{
5976 int nbytes = 0, err;
64b39f4a 5977 u64 id;
e2f34481 5978 struct ksmbd_rpc_command *rpc_resp;
e5066499
NJ		 5979 struct smb2_read_req *req = work->request_buf;
5980 struct smb2_read_rsp *rsp = work->response_buf;
e2f34481
NJ		 5981
5982 id = le64_to_cpu(req->VolatileFileId);
5983
5984 inc_rfc1001_len(rsp, 16);
5985 rpc_resp = ksmbd_rpc_read(work->sess, id);
5986 if (rpc_resp) {
5987 if (rpc_resp->flags != KSMBD_RPC_OK) {
5988 err = -EINVAL;
5989 goto out;
5990 }
5991
5992 work->aux_payload_buf =
79f6b11a 5993 kvmalloc(rpc_resp->payload_sz, GFP_KERNEL | __GFP_ZERO);
e2f34481
NJ		 5994 if (!work->aux_payload_buf) {
5995 err = -ENOMEM;
5996 goto out;
5997 }
5998
5999 memcpy(work->aux_payload_buf, rpc_resp->payload,
070fb21e 6000 rpc_resp->payload_sz);
e2f34481
NJ		 6001
6002 nbytes = rpc_resp->payload_sz;
6003 work->resp_hdr_sz = get_rfc1002_len(rsp) + 4;
6004 work->aux_payload_sz = nbytes;
79f6b11a 6005 kvfree(rpc_resp);
e2f34481
NJ		 6006 }
6007
6008 rsp->StructureSize = cpu_to_le16(17);
6009 rsp->DataOffset = 80;
6010 rsp->Reserved = 0;
6011 rsp->DataLength = cpu_to_le32(nbytes);
6012 rsp->DataRemaining = 0;
6013 rsp->Reserved2 = 0;
6014 inc_rfc1001_len(rsp, nbytes);
6015 return 0;
6016
6017out:
6018 rsp->hdr.Status = STATUS_UNEXPECTED_IO_ERROR;
6019 smb2_set_err_rsp(work);
79f6b11a 6020 kvfree(rpc_resp);
e2f34481
NJ		 6021 return err;
6022}
6023
6024static ssize_t smb2_read_rdma_channel(struct ksmbd_work *work,
070fb21e
NJ		 6025 struct smb2_read_req *req, void *data_buf,
6026 size_t length)
e2f34481
NJ		 6027{
6028 struct smb2_buffer_desc_v1 *desc =
6029 (struct smb2_buffer_desc_v1 *)&req->Buffer[0];
6030 int err;
6031
64b39f4a
NJ		 6032 if (work->conn->dialect == SMB30_PROT_ID &&
6033 req->Channel != SMB2_CHANNEL_RDMA_V1)
e2f34481
NJ		 6034 return -EINVAL;
6035
64b39f4a
NJ		 6036 if (req->ReadChannelInfoOffset == 0 ||
6037 le16_to_cpu(req->ReadChannelInfoLength) < sizeof(*desc))
e2f34481
NJ		 6038 return -EINVAL;
6039
6040 work->need_invalidate_rkey =
6041 (req->Channel == SMB2_CHANNEL_RDMA_V1_INVALIDATE);
6042 work->remote_key = le32_to_cpu(desc->token);
6043
64b39f4a 6044 err = ksmbd_conn_rdma_write(work->conn, data_buf, length,
070fb21e
NJ		 6045 le32_to_cpu(desc->token),
6046 le64_to_cpu(desc->offset),
6047 le32_to_cpu(desc->length));
e2f34481
NJ		 6048 if (err)
6049 return err;
6050
6051 return length;
6052}
6053
6054/**
6055 * smb2_read() - handler for smb2 read from file
6056 * @work: smb work containing read command buffer
6057 *
6058 * Return: 0 on success, otherwise error
6059 */
6060int smb2_read(struct ksmbd_work *work)
6061{
6062 struct ksmbd_conn *conn = work->conn;
6063 struct smb2_read_req *req;
6064 struct smb2_read_rsp *rsp, *rsp_org;
6065 struct ksmbd_file *fp;
6066 loff_t offset;
6067 size_t length, mincount;
6068 ssize_t nbytes = 0, remain_bytes = 0;
6069 int err = 0;
6070
e5066499 6071 rsp_org = work->response_buf;
e2f34481
NJ		 6072 WORK_BUFFERS(work, req, rsp);
6073
6074 if (test_share_config_flag(work->tcon->share_conf,
6075 KSMBD_SHARE_FLAG_PIPE)) {
6076 ksmbd_debug(SMB, "IPC pipe read request\n");
6077 return smb2_read_pipe(work);
6078 }
6079
070fb21e
NJ		 6080 fp = ksmbd_lookup_fd_slow(work, le64_to_cpu(req->VolatileFileId),
6081 le64_to_cpu(req->PersistentFileId));
e2f34481 6082 if (!fp) {
a4382db9
MM		 6083 err = -ENOENT;
6084 goto out;
e2f34481
NJ		 6085 }
6086
6087 if (!(fp->daccess & (FILE_READ_DATA_LE | FILE_READ_ATTRIBUTES_LE))) {
bde1694a 6088 pr_err("Not permitted to read : 0x%x\n", fp->daccess);
e2f34481
NJ		 6089 err = -EACCES;
6090 goto out;
6091 }
6092
6093 offset = le64_to_cpu(req->Offset);
6094 length = le32_to_cpu(req->Length);
6095 mincount = le32_to_cpu(req->MinimumCount);
6096
6097 if (length > conn->vals->max_read_size) {
6098 ksmbd_debug(SMB, "limiting read size to max size(%u)\n",
6099 conn->vals->max_read_size);
6100 err = -EINVAL;
6101 goto out;
6102 }
6103
493fa2fb
NJ		 6104 ksmbd_debug(SMB, "filename %pd, offset %lld, len %zu\n",
6105 fp->filp->f_path.dentry, offset, length);
e2f34481 6106
c30f4eb8 6107 work->aux_payload_buf = kvmalloc(length, GFP_KERNEL | __GFP_ZERO);
e2f34481 6108 if (!work->aux_payload_buf) {
c1ea111f 6109 err = -ENOMEM;
e2f34481
NJ		 6110 goto out;
6111 }
6112
6113 nbytes = ksmbd_vfs_read(work, fp, length, &offset);
6114 if (nbytes < 0) {
6115 err = nbytes;
6116 goto out;
6117 }
6118
6119 if ((nbytes == 0 && length != 0) || nbytes < mincount) {
c30f4eb8 6120 kvfree(work->aux_payload_buf);
e5066499 6121 work->aux_payload_buf = NULL;
e2f34481
NJ		 6122 rsp->hdr.Status = STATUS_END_OF_FILE;
6123 smb2_set_err_rsp(work);
6124 ksmbd_fd_put(work, fp);
6125 return 0;
6126 }
6127
6128 ksmbd_debug(SMB, "nbytes %zu, offset %lld mincount %zu\n",
070fb21e 6129 nbytes, offset, mincount);
e2f34481
NJ		 6130
6131 if (req->Channel == SMB2_CHANNEL_RDMA_V1_INVALIDATE ||
64b39f4a 6132 req->Channel == SMB2_CHANNEL_RDMA_V1) {
e2f34481
NJ		 6133 /* write data to the client using rdma channel */
6134 remain_bytes = smb2_read_rdma_channel(work, req,
070fb21e
NJ		 6135 work->aux_payload_buf,
6136 nbytes);
c30f4eb8 6137 kvfree(work->aux_payload_buf);
e5066499 6138 work->aux_payload_buf = NULL;
e2f34481
NJ		 6139
6140 nbytes = 0;
6141 if (remain_bytes < 0) {
6142 err = (int)remain_bytes;
6143 goto out;
6144 }
6145 }
6146
6147 rsp->StructureSize = cpu_to_le16(17);
6148 rsp->DataOffset = 80;
6149 rsp->Reserved = 0;
6150 rsp->DataLength = cpu_to_le32(nbytes);
6151 rsp->DataRemaining = cpu_to_le32(remain_bytes);
6152 rsp->Reserved2 = 0;
6153 inc_rfc1001_len(rsp_org, 16);
6154 work->resp_hdr_sz = get_rfc1002_len(rsp_org) + 4;
6155 work->aux_payload_sz = nbytes;
6156 inc_rfc1001_len(rsp_org, nbytes);
6157 ksmbd_fd_put(work, fp);
6158 return 0;
6159
6160out:
6161 if (err) {
6162 if (err == -EISDIR)
6163 rsp->hdr.Status = STATUS_INVALID_DEVICE_REQUEST;
6164 else if (err == -EAGAIN)
6165 rsp->hdr.Status = STATUS_FILE_LOCK_CONFLICT;
6166 else if (err == -ENOENT)
6167 rsp->hdr.Status = STATUS_FILE_CLOSED;
6168 else if (err == -EACCES)
6169 rsp->hdr.Status = STATUS_ACCESS_DENIED;
6170 else if (err == -ESHARE)
6171 rsp->hdr.Status = STATUS_SHARING_VIOLATION;
6172 else if (err == -EINVAL)
6173 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
6174 else
6175 rsp->hdr.Status = STATUS_INVALID_HANDLE;
6176
6177 smb2_set_err_rsp(work);
6178 }
6179 ksmbd_fd_put(work, fp);
6180 return err;
6181}
6182
6183/**
6184 * smb2_write_pipe() - handler for smb2 write on IPC pipe
6185 * @work: smb work containing write IPC pipe command buffer
6186 *
6187 * Return: 0 on success, otherwise error
6188 */
6189static noinline int smb2_write_pipe(struct ksmbd_work *work)
6190{
e5066499
NJ		 6191 struct smb2_write_req *req = work->request_buf;
6192 struct smb2_write_rsp *rsp = work->response_buf;
e2f34481 6193 struct ksmbd_rpc_command *rpc_resp;
64b39f4a 6194 u64 id = 0;
e2f34481
NJ		 6195 int err = 0, ret = 0;
6196 char *data_buf;
6197 size_t length;
6198
6199 length = le32_to_cpu(req->Length);
6200 id = le64_to_cpu(req->VolatileFileId);
6201
6202 if (le16_to_cpu(req->DataOffset) ==
64b39f4a 6203 (offsetof(struct smb2_write_req, Buffer) - 4)) {
e2f34481
NJ		 6204 data_buf = (char *)&req->Buffer[0];
6205 } else {
9a63b999 6206 if ((u64)le16_to_cpu(req->DataOffset) + length > get_rfc1002_len(req)) {
bde1694a
NJ		 6207 pr_err("invalid write data offset %u, smb_len %u\n",
6208 le16_to_cpu(req->DataOffset),
6209 get_rfc1002_len(req));
e2f34481
NJ		 6210 err = -EINVAL;
6211 goto out;
6212 }
6213
6214 data_buf = (char *)(((char *)&req->hdr.ProtocolId) +
6215 le16_to_cpu(req->DataOffset));
6216 }
6217
6218 rpc_resp = ksmbd_rpc_write(work->sess, id, data_buf, length);
6219 if (rpc_resp) {
6220 if (rpc_resp->flags == KSMBD_RPC_ENOTIMPLEMENTED) {
6221 rsp->hdr.Status = STATUS_NOT_SUPPORTED;
79f6b11a 6222 kvfree(rpc_resp);
e2f34481
NJ		 6223 smb2_set_err_rsp(work);
6224 return -EOPNOTSUPP;
6225 }
6226 if (rpc_resp->flags != KSMBD_RPC_OK) {
6227 rsp->hdr.Status = STATUS_INVALID_HANDLE;
6228 smb2_set_err_rsp(work);
79f6b11a 6229 kvfree(rpc_resp);
e2f34481
NJ		 6230 return ret;
6231 }
79f6b11a 6232 kvfree(rpc_resp);
e2f34481
NJ		 6233 }
6234
6235 rsp->StructureSize = cpu_to_le16(17);
6236 rsp->DataOffset = 0;
6237 rsp->Reserved = 0;
6238 rsp->DataLength = cpu_to_le32(length);
6239 rsp->DataRemaining = 0;
6240 rsp->Reserved2 = 0;
6241 inc_rfc1001_len(rsp, 16);
6242 return 0;
6243out:
6244 if (err) {
6245 rsp->hdr.Status = STATUS_INVALID_HANDLE;
6246 smb2_set_err_rsp(work);
6247 }
6248
6249 return err;
6250}
6251
6252static ssize_t smb2_write_rdma_channel(struct ksmbd_work *work,
070fb21e
NJ		 6253 struct smb2_write_req *req,
6254 struct ksmbd_file *fp,
6255 loff_t offset, size_t length, bool sync)
e2f34481
NJ		 6256{
6257 struct smb2_buffer_desc_v1 *desc;
6258 char *data_buf;
6259 int ret;
6260 ssize_t nbytes;
6261
6262 desc = (struct smb2_buffer_desc_v1 *)&req->Buffer[0];
6263
6264 if (work->conn->dialect == SMB30_PROT_ID &&
64b39f4a 6265 req->Channel != SMB2_CHANNEL_RDMA_V1)
e2f34481
NJ		 6266 return -EINVAL;
6267
6268 if (req->Length != 0 || req->DataOffset != 0)
6269 return -EINVAL;
6270
64b39f4a
NJ		 6271 if (req->WriteChannelInfoOffset == 0 ||
6272 le16_to_cpu(req->WriteChannelInfoLength) < sizeof(*desc))
e2f34481
NJ		 6273 return -EINVAL;
6274
6275 work->need_invalidate_rkey =
6276 (req->Channel == SMB2_CHANNEL_RDMA_V1_INVALIDATE);
6277 work->remote_key = le32_to_cpu(desc->token);
6278
79f6b11a 6279 data_buf = kvmalloc(length, GFP_KERNEL | __GFP_ZERO);
e2f34481
NJ		 6280 if (!data_buf)
6281 return -ENOMEM;
6282
6283 ret = ksmbd_conn_rdma_read(work->conn, data_buf, length,
070fb21e
NJ		 6284 le32_to_cpu(desc->token),
6285 le64_to_cpu(desc->offset),
6286 le32_to_cpu(desc->length));
e2f34481 6287 if (ret < 0) {
79f6b11a 6288 kvfree(data_buf);
e2f34481
NJ		 6289 return ret;
6290 }
6291
64b39f4a 6292 ret = ksmbd_vfs_write(work, fp, data_buf, length, &offset, sync, &nbytes);
79f6b11a 6293 kvfree(data_buf);
e2f34481
NJ		 6294 if (ret < 0)
6295 return ret;
6296
6297 return nbytes;
6298}
6299
6300/**
6301 * smb2_write() - handler for smb2 write from file
6302 * @work: smb work containing write command buffer
6303 *
6304 * Return: 0 on success, otherwise error
6305 */
6306int smb2_write(struct ksmbd_work *work)
6307{
6308 struct smb2_write_req *req;
6309 struct smb2_write_rsp *rsp, *rsp_org;
bcd62a36 6310 struct ksmbd_file *fp = NULL;
e2f34481
NJ		 6311 loff_t offset;
6312 size_t length;
6313 ssize_t nbytes;
6314 char *data_buf;
6315 bool writethrough = false;
6316 int err = 0;
6317
e5066499 6318 rsp_org = work->response_buf;
e2f34481
NJ		 6319 WORK_BUFFERS(work, req, rsp);
6320
64b39f4a 6321 if (test_share_config_flag(work->tcon->share_conf, KSMBD_SHARE_FLAG_PIPE)) {
e2f34481
NJ		 6322 ksmbd_debug(SMB, "IPC pipe write request\n");
6323 return smb2_write_pipe(work);
6324 }
6325
6326 if (!test_tree_conn_flag(work->tcon, KSMBD_TREE_CONN_FLAG_WRITABLE)) {
6327 ksmbd_debug(SMB, "User does not have write permission\n");
6328 err = -EACCES;
6329 goto out;
6330 }
6331
64b39f4a 6332 fp = ksmbd_lookup_fd_slow(work, le64_to_cpu(req->VolatileFileId),
070fb21e 6333 le64_to_cpu(req->PersistentFileId));
e2f34481 6334 if (!fp) {
a4382db9
MM		 6335 err = -ENOENT;
6336 goto out;
e2f34481
NJ		 6337 }
6338
6339 if (!(fp->daccess & (FILE_WRITE_DATA_LE | FILE_READ_ATTRIBUTES_LE))) {
bde1694a 6340 pr_err("Not permitted to write : 0x%x\n", fp->daccess);
e2f34481
NJ		 6341 err = -EACCES;
6342 goto out;
6343 }
6344
6345 offset = le64_to_cpu(req->Offset);
6346 length = le32_to_cpu(req->Length);
6347
6348 if (length > work->conn->vals->max_write_size) {
6349 ksmbd_debug(SMB, "limiting write size to max size(%u)\n",
6350 work->conn->vals->max_write_size);
6351 err = -EINVAL;
6352 goto out;
6353 }
6354
6355 if (le32_to_cpu(req->Flags) & SMB2_WRITEFLAG_WRITE_THROUGH)
6356 writethrough = true;
6357
6358 if (req->Channel != SMB2_CHANNEL_RDMA_V1 &&
64b39f4a 6359 req->Channel != SMB2_CHANNEL_RDMA_V1_INVALIDATE) {
e2f34481 6360 if (le16_to_cpu(req->DataOffset) ==
070fb21e 6361 (offsetof(struct smb2_write_req, Buffer) - 4)) {
e2f34481
NJ		 6362 data_buf = (char *)&req->Buffer[0];
6363 } else {
9a63b999 6364 if ((u64)le16_to_cpu(req->DataOffset) + length > get_rfc1002_len(req)) {
bde1694a
NJ		 6365 pr_err("invalid write data offset %u, smb_len %u\n",
6366 le16_to_cpu(req->DataOffset),
6367 get_rfc1002_len(req));
e2f34481
NJ		 6368 err = -EINVAL;
6369 goto out;
6370 }
6371
6372 data_buf = (char *)(((char *)&req->hdr.ProtocolId) +
6373 le16_to_cpu(req->DataOffset));
6374 }
6375
6376 ksmbd_debug(SMB, "flags %u\n", le32_to_cpu(req->Flags));
6377 if (le32_to_cpu(req->Flags) & SMB2_WRITEFLAG_WRITE_THROUGH)
6378 writethrough = true;
6379
493fa2fb
NJ		 6380 ksmbd_debug(SMB, "filename %pd, offset %lld, len %zu\n",
6381 fp->filp->f_path.dentry, offset, length);
e2f34481
NJ		 6382 err = ksmbd_vfs_write(work, fp, data_buf, length, &offset,
6383 writethrough, &nbytes);
6384 if (err < 0)
6385 goto out;
6386 } else {
6387 /* read data from the client using rdma channel, and
6388 * write the data.
6389 */
6390 nbytes = smb2_write_rdma_channel(work, req, fp, offset,
070fb21e
NJ		 6391 le32_to_cpu(req->RemainingBytes),
6392 writethrough);
e2f34481
NJ		 6393 if (nbytes < 0) {
6394 err = (int)nbytes;
6395 goto out;
6396 }
6397 }
6398
6399 rsp->StructureSize = cpu_to_le16(17);
6400 rsp->DataOffset = 0;
6401 rsp->Reserved = 0;
6402 rsp->DataLength = cpu_to_le32(nbytes);
6403 rsp->DataRemaining = 0;
6404 rsp->Reserved2 = 0;
6405 inc_rfc1001_len(rsp_org, 16);
6406 ksmbd_fd_put(work, fp);
6407 return 0;
6408
6409out:
6410 if (err == -EAGAIN)
6411 rsp->hdr.Status = STATUS_FILE_LOCK_CONFLICT;
6412 else if (err == -ENOSPC || err == -EFBIG)
6413 rsp->hdr.Status = STATUS_DISK_FULL;
6414 else if (err == -ENOENT)
6415 rsp->hdr.Status = STATUS_FILE_CLOSED;
6416 else if (err == -EACCES)
6417 rsp->hdr.Status = STATUS_ACCESS_DENIED;
6418 else if (err == -ESHARE)
6419 rsp->hdr.Status = STATUS_SHARING_VIOLATION;
6420 else if (err == -EINVAL)
6421 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
6422 else
6423 rsp->hdr.Status = STATUS_INVALID_HANDLE;
6424
6425 smb2_set_err_rsp(work);
6426 ksmbd_fd_put(work, fp);
6427 return err;
6428}
6429
6430/**
6431 * smb2_flush() - handler for smb2 flush file - fsync
6432 * @work: smb work containing flush command buffer
6433 *
6434 * Return: 0 on success, otherwise error
6435 */
6436int smb2_flush(struct ksmbd_work *work)
6437{
6438 struct smb2_flush_req *req;
6439 struct smb2_flush_rsp *rsp, *rsp_org;
6440 int err;
6441
e5066499 6442 rsp_org = work->response_buf;
e2f34481
NJ		 6443 WORK_BUFFERS(work, req, rsp);
6444
6445 ksmbd_debug(SMB, "SMB2_FLUSH called for fid %llu\n",
070fb21e 6446 le64_to_cpu(req->VolatileFileId));
e2f34481
NJ		 6447
6448 err = ksmbd_vfs_fsync(work,
6449 le64_to_cpu(req->VolatileFileId),
6450 le64_to_cpu(req->PersistentFileId));
6451 if (err)
6452 goto out;
6453
6454 rsp->StructureSize = cpu_to_le16(4);
6455 rsp->Reserved = 0;
6456 inc_rfc1001_len(rsp_org, 4);
6457 return 0;
6458
6459out:
6460 if (err) {
6461 rsp->hdr.Status = STATUS_INVALID_HANDLE;
6462 smb2_set_err_rsp(work);
6463 }
6464
6465 return err;
6466}
6467
6468/**
6469 * smb2_cancel() - handler for smb2 cancel command
6470 * @work: smb work containing cancel command buffer
6471 *
6472 * Return: 0 on success, otherwise error
6473 */
6474int smb2_cancel(struct ksmbd_work *work)
6475{
6476 struct ksmbd_conn *conn = work->conn;
e5066499 6477 struct smb2_hdr *hdr = work->request_buf;
e2f34481
NJ		 6478 struct smb2_hdr *chdr;
6479 struct ksmbd_work *cancel_work = NULL;
e2f34481
NJ		 6480 int canceled = 0;
6481 struct list_head *command_list;
6482
6483 ksmbd_debug(SMB, "smb2 cancel called on mid %llu, async flags 0x%x\n",
070fb21e 6484 hdr->MessageId, hdr->Flags);
e2f34481
NJ		 6485
6486 if (hdr->Flags & SMB2_FLAGS_ASYNC_COMMAND) {
6487 command_list = &conn->async_requests;
6488
6489 spin_lock(&conn->request_lock);
6f3d5eee
NJ		 6490 list_for_each_entry(cancel_work, command_list,
6491 async_request_entry) {
e5066499 6492 chdr = cancel_work->request_buf;
e2f34481
NJ		 6493
6494 if (cancel_work->async_id !=
64b39f4a 6495 le64_to_cpu(hdr->Id.AsyncId))
e2f34481
NJ		 6496 continue;
6497
6498 ksmbd_debug(SMB,
070fb21e
NJ		 6499 "smb2 with AsyncId %llu cancelled command = 0x%x\n",
6500 le64_to_cpu(hdr->Id.AsyncId),
6501 le16_to_cpu(chdr->Command));
e2f34481
NJ		 6502 canceled = 1;
6503 break;
6504 }
6505 spin_unlock(&conn->request_lock);
6506 } else {
6507 command_list = &conn->requests;
6508
6509 spin_lock(&conn->request_lock);
6f3d5eee 6510 list_for_each_entry(cancel_work, command_list, request_entry) {
e5066499 6511 chdr = cancel_work->request_buf;
e2f34481
NJ		 6512
6513 if (chdr->MessageId != hdr->MessageId ||
64b39f4a 6514 cancel_work == work)
e2f34481
NJ		 6515 continue;
6516
6517 ksmbd_debug(SMB,
070fb21e
NJ		 6518 "smb2 with mid %llu cancelled command = 0x%x\n",
6519 le64_to_cpu(hdr->MessageId),
6520 le16_to_cpu(chdr->Command));
e2f34481
NJ		 6521 canceled = 1;
6522 break;
6523 }
6524 spin_unlock(&conn->request_lock);
6525 }
6526
6527 if (canceled) {
6528 cancel_work->state = KSMBD_WORK_CANCELLED;
6529 if (cancel_work->cancel_fn)
6530 cancel_work->cancel_fn(cancel_work->cancel_argv);
6531 }
6532
6533 /* For SMB2_CANCEL command itself send no response*/
6534 work->send_no_response = 1;
6535 return 0;
6536}
6537
6538struct file_lock *smb_flock_init(struct file *f)
6539{
6540 struct file_lock *fl;
6541
6542 fl = locks_alloc_lock();
6543 if (!fl)
6544 goto out;
6545
6546 locks_init_lock(fl);
6547
6548 fl->fl_owner = f;
6549 fl->fl_pid = current->tgid;
6550 fl->fl_file = f;
6551 fl->fl_flags = FL_POSIX;
6552 fl->fl_ops = NULL;
6553 fl->fl_lmops = NULL;
6554
6555out:
6556 return fl;
6557}
6558
6559static int smb2_set_flock_flags(struct file_lock *flock, int flags)
6560{
6561 int cmd = -EINVAL;
6562
6563 /* Checking for wrong flag combination during lock request*/
6564 switch (flags) {
6565 case SMB2_LOCKFLAG_SHARED:
6566 ksmbd_debug(SMB, "received shared request\n");
6567 cmd = F_SETLKW;
6568 flock->fl_type = F_RDLCK;
6569 flock->fl_flags |= FL_SLEEP;
6570 break;
6571 case SMB2_LOCKFLAG_EXCLUSIVE:
6572 ksmbd_debug(SMB, "received exclusive request\n");
6573 cmd = F_SETLKW;
6574 flock->fl_type = F_WRLCK;
6575 flock->fl_flags |= FL_SLEEP;
6576 break;
64b39f4a 6577 case SMB2_LOCKFLAG_SHARED | SMB2_LOCKFLAG_FAIL_IMMEDIATELY:
e2f34481 6578 ksmbd_debug(SMB,
070fb21e 6579 "received shared & fail immediately request\n");
e2f34481
NJ		 6580 cmd = F_SETLK;
6581 flock->fl_type = F_RDLCK;
6582 break;
64b39f4a 6583 case SMB2_LOCKFLAG_EXCLUSIVE | SMB2_LOCKFLAG_FAIL_IMMEDIATELY:
e2f34481 6584 ksmbd_debug(SMB,
070fb21e 6585 "received exclusive & fail immediately request\n");
e2f34481
NJ		 6586 cmd = F_SETLK;
6587 flock->fl_type = F_WRLCK;
6588 break;
6589 case SMB2_LOCKFLAG_UNLOCK:
6590 ksmbd_debug(SMB, "received unlock request\n");
6591 flock->fl_type = F_UNLCK;
6592 cmd = 0;
6593 break;
6594 }
6595
6596 return cmd;
6597}
6598
6599static struct ksmbd_lock *smb2_lock_init(struct file_lock *flock,
070fb21e
NJ		 6600 unsigned int cmd, int flags,
6601 struct list_head *lock_list)
e2f34481
NJ		 6602{
6603 struct ksmbd_lock *lock;
6604
6605 lock = kzalloc(sizeof(struct ksmbd_lock), GFP_KERNEL);
6606 if (!lock)
6607 return NULL;
6608
6609 lock->cmd = cmd;
6610 lock->fl = flock;
6611 lock->start = flock->fl_start;
6612 lock->end = flock->fl_end;
6613 lock->flags = flags;
6614 if (lock->start == lock->end)
6615 lock->zero_len = 1;
d63528eb
HL		 6616 INIT_LIST_HEAD(&lock->clist);
6617 INIT_LIST_HEAD(&lock->flist);
e2f34481 6618 INIT_LIST_HEAD(&lock->llist);
e2f34481
NJ		 6619 list_add_tail(&lock->llist, lock_list);
6620
6621 return lock;
6622}
6623
6624static void smb2_remove_blocked_lock(void **argv)
6625{
6626 struct file_lock *flock = (struct file_lock *)argv[0];
6627
6628 ksmbd_vfs_posix_lock_unblock(flock);
6629 wake_up(&flock->fl_wait);
6630}
6631
6632static inline bool lock_defer_pending(struct file_lock *fl)
6633{
6634 /* check pending lock waiters */
6635 return waitqueue_active(&fl->fl_wait);
6636}
6637
6638/**
6639 * smb2_lock() - handler for smb2 file lock command
6640 * @work: smb work containing lock command buffer
6641 *
6642 * Return: 0 on success, otherwise error
6643 */
6644int smb2_lock(struct ksmbd_work *work)
6645{
e5066499
NJ		 6646 struct smb2_lock_req *req = work->request_buf;
6647 struct smb2_lock_rsp *rsp = work->response_buf;
e2f34481
NJ		 6648 struct smb2_lock_element *lock_ele;
6649 struct ksmbd_file *fp = NULL;
6650 struct file_lock *flock = NULL;
6651 struct file *filp = NULL;
6652 int lock_count;
6653 int flags = 0;
6654 int cmd = 0;
6c99dfc4 6655 int err = -EIO, i, rc = 0;
50bf80a5 6656 u64 lock_start, lock_length;
d63528eb
HL		 6657 struct ksmbd_lock *smb_lock = NULL, *cmp_lock, *tmp, *tmp2;
6658 struct ksmbd_conn *conn;
e2f34481
NJ		 6659 int nolock = 0;
6660 LIST_HEAD(lock_list);
6661 LIST_HEAD(rollback_list);
6662 int prior_lock = 0;
6663
6664 ksmbd_debug(SMB, "Received lock request\n");
6665 fp = ksmbd_lookup_fd_slow(work,
070fb21e
NJ		 6666 le64_to_cpu(req->VolatileFileId),
6667 le64_to_cpu(req->PersistentFileId));
e2f34481
NJ		 6668 if (!fp) {
6669 ksmbd_debug(SMB, "Invalid file id for lock : %llu\n",
070fb21e 6670 le64_to_cpu(req->VolatileFileId));
6c99dfc4 6671 err = -ENOENT;
e2f34481
NJ		 6672 goto out2;
6673 }
6674
6675 filp = fp->filp;
6676 lock_count = le16_to_cpu(req->LockCount);
6677 lock_ele = req->locks;
6678
6679 ksmbd_debug(SMB, "lock count is %d\n", lock_count);
070fb21e 6680 if (!lock_count) {
6c99dfc4 6681 err = -EINVAL;
e2f34481
NJ		 6682 goto out2;
6683 }
6684
6685 for (i = 0; i < lock_count; i++) {
6686 flags = le32_to_cpu(lock_ele[i].Flags);
6687
6688 flock = smb_flock_init(filp);
6c99dfc4 6689 if (!flock)
e2f34481 6690 goto out;
e2f34481
NJ		 6691
6692 cmd = smb2_set_flock_flags(flock, flags);
6693
50bf80a5
NJ		 6694 lock_start = le64_to_cpu(lock_ele[i].Offset);
6695 lock_length = le64_to_cpu(lock_ele[i].Length);
6696 if (lock_start > U64_MAX - lock_length) {
bde1694a 6697 pr_err("Invalid lock range requested\n");
e2f34481
NJ		 6698 rsp->hdr.Status = STATUS_INVALID_LOCK_RANGE;
6699 goto out;
6700 }
6701
50bf80a5
NJ		 6702 if (lock_start > OFFSET_MAX)
6703 flock->fl_start = OFFSET_MAX;
6704 else
6705 flock->fl_start = lock_start;
6706
e2f34481 6707 lock_length = le64_to_cpu(lock_ele[i].Length);
50bf80a5
NJ		 6708 if (lock_length > OFFSET_MAX - flock->fl_start)
6709 lock_length = OFFSET_MAX - flock->fl_start;
e2f34481
NJ		 6710
6711 flock->fl_end = flock->fl_start + lock_length;
6712
6713 if (flock->fl_end < flock->fl_start) {
6714 ksmbd_debug(SMB,
070fb21e
NJ		 6715 "the end offset(%llx) is smaller than the start offset(%llx)\n",
6716 flock->fl_end, flock->fl_start);
e2f34481
NJ		 6717 rsp->hdr.Status = STATUS_INVALID_LOCK_RANGE;
6718 goto out;
6719 }
6720
6721 /* Check conflict locks in one request */
6722 list_for_each_entry(cmp_lock, &lock_list, llist) {
6723 if (cmp_lock->fl->fl_start <= flock->fl_start &&
64b39f4a 6724 cmp_lock->fl->fl_end >= flock->fl_end) {
e2f34481 6725 if (cmp_lock->fl->fl_type != F_UNLCK &&
64b39f4a 6726 flock->fl_type != F_UNLCK) {
bde1694a 6727 pr_err("conflict two locks in one request\n");
6c99dfc4 6728 err = -EINVAL;
e2f34481
NJ		 6729 goto out;
6730 }
6731 }
6732 }
6733
6734 smb_lock = smb2_lock_init(flock, cmd, flags, &lock_list);
6735 if (!smb_lock) {
6c99dfc4 6736 err = -EINVAL;
e2f34481
NJ		 6737 goto out;
6738 }
6739 }
6740
6741 list_for_each_entry_safe(smb_lock, tmp, &lock_list, llist) {
6742 if (smb_lock->cmd < 0) {
6c99dfc4 6743 err = -EINVAL;
e2f34481
NJ		 6744 goto out;
6745 }
6746
6747 if (!(smb_lock->flags & SMB2_LOCKFLAG_MASK)) {
6c99dfc4 6748 err = -EINVAL;
e2f34481
NJ		 6749 goto out;
6750 }
6751
64b39f4a
NJ		 6752 if ((prior_lock & (SMB2_LOCKFLAG_EXCLUSIVE | SMB2_LOCKFLAG_SHARED) &&
6753 smb_lock->flags & SMB2_LOCKFLAG_UNLOCK) ||
6754 (prior_lock == SMB2_LOCKFLAG_UNLOCK &&
6755 !(smb_lock->flags & SMB2_LOCKFLAG_UNLOCK))) {
6c99dfc4 6756 err = -EINVAL;
e2f34481
NJ		 6757 goto out;
6758 }
6759
6760 prior_lock = smb_lock->flags;
6761
6762 if (!(smb_lock->flags & SMB2_LOCKFLAG_UNLOCK) &&
64b39f4a 6763 !(smb_lock->flags & SMB2_LOCKFLAG_FAIL_IMMEDIATELY))
d63528eb 6764 goto no_check_cl;
e2f34481
NJ		 6765
6766 nolock = 1;
d63528eb
HL		 6767 /* check locks in connection list */
6768 read_lock(&conn_list_lock);
6769 list_for_each_entry(conn, &conn_list, conns_list) {
6770 spin_lock(&conn->llist_lock);
6771 list_for_each_entry_safe(cmp_lock, tmp2, &conn->lock_list, clist) {
6772 if (file_inode(cmp_lock->fl->fl_file) !=
6773 file_inode(smb_lock->fl->fl_file))
6774 continue;
e2f34481 6775
d63528eb
HL		 6776 if (smb_lock->fl->fl_type == F_UNLCK) {
6777 if (cmp_lock->fl->fl_file == smb_lock->fl->fl_file &&
6778 cmp_lock->start == smb_lock->start &&
6779 cmp_lock->end == smb_lock->end &&
6780 !lock_defer_pending(cmp_lock->fl)) {
6781 nolock = 0;
6782 list_del(&cmp_lock->flist);
6783 list_del(&cmp_lock->clist);
6784 spin_unlock(&conn->llist_lock);
6785 read_unlock(&conn_list_lock);
6786
6787 locks_free_lock(cmp_lock->fl);
6788 kfree(cmp_lock);
6789 goto out_check_cl;
6790 }
6791 continue;
e2f34481 6792 }
e2f34481 6793
d63528eb
HL		 6794 if (cmp_lock->fl->fl_file == smb_lock->fl->fl_file) {
6795 if (smb_lock->flags & SMB2_LOCKFLAG_SHARED)
6796 continue;
6797 } else {
6798 if (cmp_lock->flags & SMB2_LOCKFLAG_SHARED)
6799 continue;
6800 }
e2f34481 6801
d63528eb
HL		 6802 /* check zero byte lock range */
6803 if (cmp_lock->zero_len && !smb_lock->zero_len &&
6804 cmp_lock->start > smb_lock->start &&
6805 cmp_lock->start < smb_lock->end) {
6806 spin_unlock(&conn->llist_lock);
6807 read_unlock(&conn_list_lock);
6808 pr_err("previous lock conflict with zero byte lock range\n");
6c99dfc4 6809 goto out;
d63528eb 6810 }
e2f34481 6811
d63528eb
HL		 6812 if (smb_lock->zero_len && !cmp_lock->zero_len &&
6813 smb_lock->start > cmp_lock->start &&
6814 smb_lock->start < cmp_lock->end) {
6815 spin_unlock(&conn->llist_lock);
6816 read_unlock(&conn_list_lock);
6817 pr_err("current lock conflict with zero byte lock range\n");
6c99dfc4 6818 goto out;
d63528eb 6819 }
e2f34481 6820
d63528eb
HL		 6821 if (((cmp_lock->start <= smb_lock->start &&
6822 cmp_lock->end > smb_lock->start) ||
6823 (cmp_lock->start < smb_lock->end &&
6824 cmp_lock->end >= smb_lock->end)) &&
6825 !cmp_lock->zero_len && !smb_lock->zero_len) {
6826 spin_unlock(&conn->llist_lock);
6827 read_unlock(&conn_list_lock);
6828 pr_err("Not allow lock operation on exclusive lock range\n");
d63528eb
HL		 6829 goto out;
6830 }
e2f34481 6831 }
d63528eb 6832 spin_unlock(&conn->llist_lock);
e2f34481 6833 }
d63528eb
HL		 6834 read_unlock(&conn_list_lock);
6835out_check_cl:
e2f34481 6836 if (smb_lock->fl->fl_type == F_UNLCK && nolock) {
bde1694a 6837 pr_err("Try to unlock nolocked range\n");
e2f34481
NJ		 6838 rsp->hdr.Status = STATUS_RANGE_NOT_LOCKED;
6839 goto out;
6840 }
6841
d63528eb 6842no_check_cl:
e2f34481
NJ		 6843 if (smb_lock->zero_len) {
6844 err = 0;
6845 goto skip;
6846 }
6847
6848 flock = smb_lock->fl;
6849 list_del(&smb_lock->llist);
6850retry:
6c99dfc4 6851 rc = vfs_lock_file(filp, smb_lock->cmd, flock, NULL);
e2f34481
NJ		 6852skip:
6853 if (flags & SMB2_LOCKFLAG_UNLOCK) {
6c99dfc4 6854 if (!rc) {
e2f34481 6855 ksmbd_debug(SMB, "File unlocked\n");
6c99dfc4 6856 } else if (rc == -ENOENT) {
e2f34481
NJ		 6857 rsp->hdr.Status = STATUS_NOT_LOCKED;
6858 goto out;
6859 }
6860 locks_free_lock(flock);
6861 kfree(smb_lock);
6862 } else {
6c99dfc4 6863 if (rc == FILE_LOCK_DEFERRED) {
e2f34481
NJ		 6864 void **argv;
6865
6866 ksmbd_debug(SMB,
070fb21e 6867 "would have to wait for getting lock\n");
d63528eb
HL		 6868 spin_lock(&work->conn->llist_lock);
6869 list_add_tail(&smb_lock->clist,
6870 &work->conn->lock_list);
6871 spin_unlock(&work->conn->llist_lock);
e2f34481
NJ		 6872 list_add(&smb_lock->llist, &rollback_list);
6873
6874 argv = kmalloc(sizeof(void *), GFP_KERNEL);
6875 if (!argv) {
6876 err = -ENOMEM;
6877 goto out;
6878 }
6879 argv[0] = flock;
6880
6c99dfc4
NJ		 6881 rc = setup_async_work(work,
6882 smb2_remove_blocked_lock,
6883 argv);
6884 if (rc) {
6885 err = -ENOMEM;
e2f34481
NJ		 6886 goto out;
6887 }
6888 spin_lock(&fp->f_lock);
6889 list_add(&work->fp_entry, &fp->blocked_works);
6890 spin_unlock(&fp->f_lock);
6891
6892 smb2_send_interim_resp(work, STATUS_PENDING);
6893
45a64e8b 6894 ksmbd_vfs_posix_lock_wait(flock);
e2f34481 6895
d4075abb 6896 if (work->state != KSMBD_WORK_ACTIVE) {
e2f34481 6897 list_del(&smb_lock->llist);
d63528eb
HL		 6898 spin_lock(&work->conn->llist_lock);
6899 list_del(&smb_lock->clist);
6900 spin_unlock(&work->conn->llist_lock);
e2f34481
NJ		 6901 locks_free_lock(flock);
6902
d4075abb 6903 if (work->state == KSMBD_WORK_CANCELLED) {
e2f34481
NJ		 6904 spin_lock(&fp->f_lock);
6905 list_del(&work->fp_entry);
6906 spin_unlock(&fp->f_lock);
6907 rsp->hdr.Status =
6908 STATUS_CANCELLED;
6909 kfree(smb_lock);
6910 smb2_send_interim_resp(work,
070fb21e 6911 STATUS_CANCELLED);
e2f34481
NJ		 6912 work->send_no_response = 1;
6913 goto out;
6914 }
6915 init_smb2_rsp_hdr(work);
6916 smb2_set_err_rsp(work);
6917 rsp->hdr.Status =
6918 STATUS_RANGE_NOT_LOCKED;
6919 kfree(smb_lock);
6920 goto out2;
6921 }
6922
6923 list_del(&smb_lock->llist);
d63528eb
HL		 6924 spin_lock(&work->conn->llist_lock);
6925 list_del(&smb_lock->clist);
6926 spin_unlock(&work->conn->llist_lock);
6927
e2f34481
NJ		 6928 spin_lock(&fp->f_lock);
6929 list_del(&work->fp_entry);
6930 spin_unlock(&fp->f_lock);
6931 goto retry;
6c99dfc4 6932 } else if (!rc) {
d63528eb
HL		 6933 spin_lock(&work->conn->llist_lock);
6934 list_add_tail(&smb_lock->clist,
6935 &work->conn->lock_list);
6936 list_add_tail(&smb_lock->flist,
6937 &fp->lock_list);
6938 spin_unlock(&work->conn->llist_lock);
e2f34481
NJ		 6939 list_add(&smb_lock->llist, &rollback_list);
6940 ksmbd_debug(SMB, "successful in taking lock\n");
6941 } else {
e2f34481
NJ		 6942 goto out;
6943 }
6944 }
6945 }
6946
6947 if (atomic_read(&fp->f_ci->op_count) > 1)
6948 smb_break_all_oplock(work, fp);
6949
6950 rsp->StructureSize = cpu_to_le16(4);
6951 ksmbd_debug(SMB, "successful in taking lock\n");
6952 rsp->hdr.Status = STATUS_SUCCESS;
6953 rsp->Reserved = 0;
6954 inc_rfc1001_len(rsp, 4);
6955 ksmbd_fd_put(work, fp);
96ad4ec5 6956 return 0;
e2f34481
NJ		 6957
6958out:
6959 list_for_each_entry_safe(smb_lock, tmp, &lock_list, llist) {
6960 locks_free_lock(smb_lock->fl);
6961 list_del(&smb_lock->llist);
6962 kfree(smb_lock);
6963 }
6964
6965 list_for_each_entry_safe(smb_lock, tmp, &rollback_list, llist) {
6966 struct file_lock *rlock = NULL;
6967
6968 rlock = smb_flock_init(filp);
6969 rlock->fl_type = F_UNLCK;
6970 rlock->fl_start = smb_lock->start;
6971 rlock->fl_end = smb_lock->end;
6972
96ad4ec5
NJ		 6973 rc = vfs_lock_file(filp, 0, rlock, NULL);
6974 if (rc)
6975 pr_err("rollback unlock fail : %d\n", rc);
d63528eb 6976
e2f34481 6977 list_del(&smb_lock->llist);
d63528eb
HL		 6978 spin_lock(&work->conn->llist_lock);
6979 if (!list_empty(&smb_lock->flist))
6980 list_del(&smb_lock->flist);
6981 list_del(&smb_lock->clist);
6982 spin_unlock(&work->conn->llist_lock);
6983
e2f34481
NJ		 6984 locks_free_lock(smb_lock->fl);
6985 locks_free_lock(rlock);
6986 kfree(smb_lock);
6987 }
6988out2:
6c99dfc4
NJ		 6989 ksmbd_debug(SMB, "failed in taking lock(flags : %x), err : %d\n", flags, err);
6990
6991 if (!rsp->hdr.Status) {
6992 if (err == -EINVAL)
6993 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
6994 else if (err == -ENOMEM)
6995 rsp->hdr.Status = STATUS_INSUFFICIENT_RESOURCES;
6996 else if (err == -ENOENT)
6997 rsp->hdr.Status = STATUS_FILE_CLOSED;
6998 else
6999 rsp->hdr.Status = STATUS_LOCK_NOT_GRANTED;
7000 }
7001
e2f34481
NJ		 7002 smb2_set_err_rsp(work);
7003 ksmbd_fd_put(work, fp);
96ad4ec5 7004 return err;
e2f34481
NJ		 7005}
7006
f7db8fd0
NJ		 7007static int fsctl_copychunk(struct ksmbd_work *work,
7008 struct copychunk_ioctl_req *ci_req,
7009 unsigned int cnt_code,
7010 unsigned int input_count,
7011 unsigned long long volatile_id,
7012 unsigned long long persistent_id,
070fb21e 7013 struct smb2_ioctl_rsp *rsp)
e2f34481 7014{
e2f34481
NJ		 7015 struct copychunk_ioctl_rsp *ci_rsp;
7016 struct ksmbd_file *src_fp = NULL, *dst_fp = NULL;
7017 struct srv_copychunk *chunks;
7018 unsigned int i, chunk_count, chunk_count_written = 0;
7019 unsigned int chunk_size_written = 0;
7020 loff_t total_size_written = 0;
f7db8fd0 7021 int ret = 0;
e2f34481 7022
e2f34481
NJ		 7023 ci_rsp = (struct copychunk_ioctl_rsp *)&rsp->Buffer[0];
7024
f7db8fd0
NJ		 7025 rsp->VolatileFileId = cpu_to_le64(volatile_id);
7026 rsp->PersistentFileId = cpu_to_le64(persistent_id);
64b39f4a
NJ		 7027 ci_rsp->ChunksWritten =
7028 cpu_to_le32(ksmbd_server_side_copy_max_chunk_count());
7029 ci_rsp->ChunkBytesWritten =
7030 cpu_to_le32(ksmbd_server_side_copy_max_chunk_size());
7031 ci_rsp->TotalBytesWritten =
7032 cpu_to_le32(ksmbd_server_side_copy_max_total_size());
e2f34481
NJ		 7033
7034 chunks = (struct srv_copychunk *)&ci_req->Chunks[0];
7035 chunk_count = le32_to_cpu(ci_req->ChunkCount);
f7db8fd0
NJ		 7036 if (chunk_count == 0)
7037 goto out;
e2f34481
NJ		 7038 total_size_written = 0;
7039
7040 /* verify the SRV_COPYCHUNK_COPY packet */
7041 if (chunk_count > ksmbd_server_side_copy_max_chunk_count() ||
f7db8fd0 7042 input_count < offsetof(struct copychunk_ioctl_req, Chunks) +
64b39f4a 7043 chunk_count * sizeof(struct srv_copychunk)) {
e2f34481
NJ		 7044 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
7045 return -EINVAL;
7046 }
7047
7048 for (i = 0; i < chunk_count; i++) {
7049 if (le32_to_cpu(chunks[i].Length) == 0 ||
64b39f4a 7050 le32_to_cpu(chunks[i].Length) > ksmbd_server_side_copy_max_chunk_size())
e2f34481
NJ		 7051 break;
7052 total_size_written += le32_to_cpu(chunks[i].Length);
7053 }
64b39f4a
NJ		 7054
7055 if (i < chunk_count ||
7056 total_size_written > ksmbd_server_side_copy_max_total_size()) {
e2f34481
NJ		 7057 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
7058 return -EINVAL;
7059 }
7060
7061 src_fp = ksmbd_lookup_foreign_fd(work,
070fb21e 7062 le64_to_cpu(ci_req->ResumeKey[0]));
f7db8fd0 7063 dst_fp = ksmbd_lookup_fd_slow(work, volatile_id, persistent_id);
e2f34481 7064 ret = -EINVAL;
64b39f4a
NJ		 7065 if (!src_fp ||
7066 src_fp->persistent_id != le64_to_cpu(ci_req->ResumeKey[1])) {
e2f34481
NJ		 7067 rsp->hdr.Status = STATUS_OBJECT_NAME_NOT_FOUND;
7068 goto out;
7069 }
64b39f4a 7070
e2f34481
NJ		 7071 if (!dst_fp) {
7072 rsp->hdr.Status = STATUS_FILE_CLOSED;
7073 goto out;
7074 }
7075
7076 /*
7077 * FILE_READ_DATA should only be included in
7078 * the FSCTL_COPYCHUNK case
7079 */
070fb21e
NJ		 7080 if (cnt_code == FSCTL_COPYCHUNK &&
7081 !(dst_fp->daccess & (FILE_READ_DATA_LE | FILE_GENERIC_READ_LE))) {
e2f34481
NJ		 7082 rsp->hdr.Status = STATUS_ACCESS_DENIED;
7083 goto out;
7084 }
7085
7086 ret = ksmbd_vfs_copy_file_ranges(work, src_fp, dst_fp,
070fb21e
NJ		 7087 chunks, chunk_count,
7088 &chunk_count_written,
7089 &chunk_size_written,
7090 &total_size_written);
e2f34481
NJ		 7091 if (ret < 0) {
7092 if (ret == -EACCES)
7093 rsp->hdr.Status = STATUS_ACCESS_DENIED;
7094 if (ret == -EAGAIN)
7095 rsp->hdr.Status = STATUS_FILE_LOCK_CONFLICT;
7096 else if (ret == -EBADF)
7097 rsp->hdr.Status = STATUS_INVALID_HANDLE;
7098 else if (ret == -EFBIG || ret == -ENOSPC)
7099 rsp->hdr.Status = STATUS_DISK_FULL;
7100 else if (ret == -EINVAL)
7101 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
7102 else if (ret == -EISDIR)
7103 rsp->hdr.Status = STATUS_FILE_IS_A_DIRECTORY;
7104 else if (ret == -E2BIG)
7105 rsp->hdr.Status = STATUS_INVALID_VIEW_SIZE;
7106 else
7107 rsp->hdr.Status = STATUS_UNEXPECTED_IO_ERROR;
7108 }
7109
7110 ci_rsp->ChunksWritten = cpu_to_le32(chunk_count_written);
7111 ci_rsp->ChunkBytesWritten = cpu_to_le32(chunk_size_written);
7112 ci_rsp->TotalBytesWritten = cpu_to_le32(total_size_written);
7113out:
7114 ksmbd_fd_put(work, src_fp);
7115 ksmbd_fd_put(work, dst_fp);
7116 return ret;
7117}
7118
7119static __be32 idev_ipv4_address(struct in_device *idev)
7120{
7121 __be32 addr = 0;
7122
7123 struct in_ifaddr *ifa;
7124
7125 rcu_read_lock();
7126 in_dev_for_each_ifa_rcu(ifa, idev) {
7127 if (ifa->ifa_flags & IFA_F_SECONDARY)
7128 continue;
7129
7130 addr = ifa->ifa_address;
7131 break;
7132 }
7133 rcu_read_unlock();
7134 return addr;
7135}
7136
7137static int fsctl_query_iface_info_ioctl(struct ksmbd_conn *conn,
f7db8fd0
NJ		 7138 struct smb2_ioctl_rsp *rsp,
7139 unsigned int out_buf_len)
e2f34481
NJ		 7140{
7141 struct network_interface_info_ioctl_rsp *nii_rsp = NULL;
7142 int nbytes = 0;
7143 struct net_device *netdev;
7144 struct sockaddr_storage_rsp *sockaddr_storage;
7145 unsigned int flags;
7146 unsigned long long speed;
f1abdb78 7147 struct sockaddr_in6 *csin6 = (struct sockaddr_in6 *)&conn->peer_addr;
e2f34481
NJ		 7148
7149 rtnl_lock();
7150 for_each_netdev(&init_net, netdev) {
f7db8fd0
NJ		 7151 if (out_buf_len <
7152 nbytes + sizeof(struct network_interface_info_ioctl_rsp)) {
7153 rtnl_unlock();
7154 return -ENOSPC;
7155 }
7156
e2f34481
NJ		 7157 if (netdev->type == ARPHRD_LOOPBACK)
7158 continue;
7159
7160 flags = dev_get_flags(netdev);
7161 if (!(flags & IFF_RUNNING))
7162 continue;
7163
7164 nii_rsp = (struct network_interface_info_ioctl_rsp *)
7165 &rsp->Buffer[nbytes];
7166 nii_rsp->IfIndex = cpu_to_le32(netdev->ifindex);
7167
03d8d4f1 7168 nii_rsp->Capability = 0;
03d8d4f1
HL		 7169 if (ksmbd_rdma_capable_netdev(netdev))
7170 nii_rsp->Capability |= cpu_to_le32(RDMA_CAPABLE);
e2f34481
NJ		 7171
7172 nii_rsp->Next = cpu_to_le32(152);
7173 nii_rsp->Reserved = 0;
7174
7175 if (netdev->ethtool_ops->get_link_ksettings) {
7176 struct ethtool_link_ksettings cmd;
7177
7178 netdev->ethtool_ops->get_link_ksettings(netdev, &cmd);
7179 speed = cmd.base.speed;
7180 } else {
d475866e
PF		 7181 ksmbd_debug(SMB, "%s %s\n", netdev->name,
7182 "speed is unknown, defaulting to 1Gb/sec");
e2f34481
NJ		 7183 speed = SPEED_1000;
7184 }
7185
7186 speed *= 1000000;
7187 nii_rsp->LinkSpeed = cpu_to_le64(speed);
7188
7189 sockaddr_storage = (struct sockaddr_storage_rsp *)
7190 nii_rsp->SockAddr_Storage;
7191 memset(sockaddr_storage, 0, 128);
7192
f1abdb78
NJ		 7193 if (conn->peer_addr.ss_family == PF_INET ||
7194 ipv6_addr_v4mapped(&csin6->sin6_addr)) {
e2f34481
NJ		 7195 struct in_device *idev;
7196
7197 sockaddr_storage->Family = cpu_to_le16(INTERNETWORK);
7198 sockaddr_storage->addr4.Port = 0;
7199
7200 idev = __in_dev_get_rtnl(netdev);
7201 if (!idev)
7202 continue;
7203 sockaddr_storage->addr4.IPv4address =
7204 idev_ipv4_address(idev);
7205 } else {
7206 struct inet6_dev *idev6;
7207 struct inet6_ifaddr *ifa;
7208 __u8 *ipv6_addr = sockaddr_storage->addr6.IPv6address;
7209
7210 sockaddr_storage->Family = cpu_to_le16(INTERNETWORKV6);
7211 sockaddr_storage->addr6.Port = 0;
7212 sockaddr_storage->addr6.FlowInfo = 0;
7213
7214 idev6 = __in6_dev_get(netdev);
7215 if (!idev6)
7216 continue;
7217
7218 list_for_each_entry(ifa, &idev6->addr_list, if_list) {
7219 if (ifa->flags & (IFA_F_TENTATIVE |
7220 IFA_F_DEPRECATED))
7221 continue;
7222 memcpy(ipv6_addr, ifa->addr.s6_addr, 16);
7223 break;
7224 }
7225 sockaddr_storage->addr6.ScopeId = 0;
7226 }
7227
7228 nbytes += sizeof(struct network_interface_info_ioctl_rsp);
7229 }
7230 rtnl_unlock();
7231
7232 /* zero if this is last one */
7233 if (nii_rsp)
7234 nii_rsp->Next = 0;
7235
e2f34481
NJ		 7236 rsp->PersistentFileId = cpu_to_le64(SMB2_NO_FID);
7237 rsp->VolatileFileId = cpu_to_le64(SMB2_NO_FID);
7238 return nbytes;
7239}
7240
e2f34481 7241static int fsctl_validate_negotiate_info(struct ksmbd_conn *conn,
070fb21e 7242 struct validate_negotiate_info_req *neg_req,
f7db8fd0
NJ		 7243 struct validate_negotiate_info_rsp *neg_rsp,
7244 unsigned int in_buf_len)
e2f34481
NJ		 7245{
7246 int ret = 0;
7247 int dialect;
7248
f7db8fd0
NJ		 7249 if (in_buf_len < sizeof(struct validate_negotiate_info_req) +
7250 le16_to_cpu(neg_req->DialectCount) * sizeof(__le16))
7251 return -EINVAL;
7252
e2f34481 7253 dialect = ksmbd_lookup_dialect_by_id(neg_req->Dialects,
070fb21e 7254 neg_req->DialectCount);
e2f34481
NJ		 7255 if (dialect == BAD_PROT_ID || dialect != conn->dialect) {
7256 ret = -EINVAL;
7257 goto err_out;
7258 }
7259
7260 if (strncmp(neg_req->Guid, conn->ClientGUID, SMB2_CLIENT_GUID_SIZE)) {
7261 ret = -EINVAL;
7262 goto err_out;
7263 }
7264
7265 if (le16_to_cpu(neg_req->SecurityMode) != conn->cli_sec_mode) {
7266 ret = -EINVAL;
7267 goto err_out;
7268 }
7269
7270 if (le32_to_cpu(neg_req->Capabilities) != conn->cli_cap) {
7271 ret = -EINVAL;
7272 goto err_out;
7273 }
7274
7275 neg_rsp->Capabilities = cpu_to_le32(conn->vals->capabilities);
7276 memset(neg_rsp->Guid, 0, SMB2_CLIENT_GUID_SIZE);
7277 neg_rsp->SecurityMode = cpu_to_le16(conn->srv_sec_mode);
7278 neg_rsp->Dialect = cpu_to_le16(conn->dialect);
7279err_out:
7280 return ret;
7281}
7282
64b39f4a 7283static int fsctl_query_allocated_ranges(struct ksmbd_work *work, u64 id,
070fb21e
NJ		 7284 struct file_allocated_range_buffer *qar_req,
7285 struct file_allocated_range_buffer *qar_rsp,
f7db8fd0 7286 unsigned int in_count, unsigned int *out_count)
e2f34481
NJ		 7287{
7288 struct ksmbd_file *fp;
7289 loff_t start, length;
7290 int ret = 0;
7291
7292 *out_count = 0;
7293 if (in_count == 0)
7294 return -EINVAL;
7295
7296 fp = ksmbd_lookup_fd_fast(work, id);
7297 if (!fp)
7298 return -ENOENT;
7299
7300 start = le64_to_cpu(qar_req->file_offset);
7301 length = le64_to_cpu(qar_req->length);
7302
7303 ret = ksmbd_vfs_fqar_lseek(fp, start, length,
070fb21e 7304 qar_rsp, in_count, out_count);
e2f34481
NJ		 7305 if (ret && ret != -E2BIG)
7306 *out_count = 0;
7307
7308 ksmbd_fd_put(work, fp);
7309 return ret;
7310}
7311
64b39f4a 7312static int fsctl_pipe_transceive(struct ksmbd_work *work, u64 id,
f7db8fd0
NJ		 7313 unsigned int out_buf_len,
7314 struct smb2_ioctl_req *req,
070fb21e 7315 struct smb2_ioctl_rsp *rsp)
e2f34481
NJ		 7316{
7317 struct ksmbd_rpc_command *rpc_resp;
7318 char *data_buf = (char *)&req->Buffer[0];
7319 int nbytes = 0;
7320
64b39f4a 7321 rpc_resp = ksmbd_rpc_ioctl(work->sess, id, data_buf,
070fb21e 7322 le32_to_cpu(req->InputCount));
e2f34481
NJ		 7323 if (rpc_resp) {
7324 if (rpc_resp->flags == KSMBD_RPC_SOME_NOT_MAPPED) {
7325 /*
7326 * set STATUS_SOME_NOT_MAPPED response
7327 * for unknown domain sid.
7328 */
7329 rsp->hdr.Status = STATUS_SOME_NOT_MAPPED;
7330 } else if (rpc_resp->flags == KSMBD_RPC_ENOTIMPLEMENTED) {
7331 rsp->hdr.Status = STATUS_NOT_SUPPORTED;
7332 goto out;
7333 } else if (rpc_resp->flags != KSMBD_RPC_OK) {
7334 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
7335 goto out;
7336 }
7337
7338 nbytes = rpc_resp->payload_sz;
7339 if (rpc_resp->payload_sz > out_buf_len) {
7340 rsp->hdr.Status = STATUS_BUFFER_OVERFLOW;
7341 nbytes = out_buf_len;
7342 }
7343
7344 if (!rpc_resp->payload_sz) {
7345 rsp->hdr.Status =
7346 STATUS_UNEXPECTED_IO_ERROR;
7347 goto out;
7348 }
7349
7350 memcpy((char *)rsp->Buffer, rpc_resp->payload, nbytes);
7351 }
7352out:
79f6b11a 7353 kvfree(rpc_resp);
e2f34481
NJ		 7354 return nbytes;
7355}
7356
64b39f4a 7357static inline int fsctl_set_sparse(struct ksmbd_work *work, u64 id,
070fb21e 7358 struct file_sparse *sparse)
e2f34481
NJ		 7359{
7360 struct ksmbd_file *fp;
465d7204 7361 struct user_namespace *user_ns;
e2f34481
NJ		 7362 int ret = 0;
7363 __le32 old_fattr;
7364
7365 fp = ksmbd_lookup_fd_fast(work, id);
7366 if (!fp)
7367 return -ENOENT;
465d7204 7368 user_ns = file_mnt_user_ns(fp->filp);
e2f34481
NJ		 7369
7370 old_fattr = fp->f_ci->m_fattr;
7371 if (sparse->SetSparse)
7372 fp->f_ci->m_fattr |= ATTR_SPARSE_FILE_LE;
7373 else
7374 fp->f_ci->m_fattr &= ~ATTR_SPARSE_FILE_LE;
7375
7376 if (fp->f_ci->m_fattr != old_fattr &&
64b39f4a
NJ		 7377 test_share_config_flag(work->tcon->share_conf,
7378 KSMBD_SHARE_FLAG_STORE_DOS_ATTRS)) {
e2f34481
NJ		 7379 struct xattr_dos_attrib da;
7380
465d7204 7381 ret = ksmbd_vfs_get_dos_attrib_xattr(user_ns,
af34983e 7382 fp->filp->f_path.dentry, &da);
e2f34481
NJ		 7383 if (ret <= 0)
7384 goto out;
7385
7386 da.attr = le32_to_cpu(fp->f_ci->m_fattr);
465d7204 7387 ret = ksmbd_vfs_set_dos_attrib_xattr(user_ns,
af34983e 7388 fp->filp->f_path.dentry, &da);
e2f34481
NJ		 7389 if (ret)
7390 fp->f_ci->m_fattr = old_fattr;
7391 }
7392
7393out:
7394 ksmbd_fd_put(work, fp);
7395 return ret;
7396}
7397
7398static int fsctl_request_resume_key(struct ksmbd_work *work,
070fb21e
NJ		 7399 struct smb2_ioctl_req *req,
7400 struct resume_key_ioctl_rsp *key_rsp)
e2f34481
NJ		 7401{
7402 struct ksmbd_file *fp;
7403
7404 fp = ksmbd_lookup_fd_slow(work,
070fb21e
NJ		 7405 le64_to_cpu(req->VolatileFileId),
7406 le64_to_cpu(req->PersistentFileId));
e2f34481
NJ		 7407 if (!fp)
7408 return -ENOENT;
7409
7410 memset(key_rsp, 0, sizeof(*key_rsp));
7411 key_rsp->ResumeKey[0] = req->VolatileFileId;
7412 key_rsp->ResumeKey[1] = req->PersistentFileId;
7413 ksmbd_fd_put(work, fp);
7414
7415 return 0;
7416}
7417
7418/**
7419 * smb2_ioctl() - handler for smb2 ioctl command
7420 * @work: smb work containing ioctl command buffer
7421 *
7422 * Return: 0 on success, otherwise error
7423 */
7424int smb2_ioctl(struct ksmbd_work *work)
7425{
7426 struct smb2_ioctl_req *req;
7427 struct smb2_ioctl_rsp *rsp, *rsp_org;
f7db8fd0 7428 unsigned int cnt_code, nbytes = 0, out_buf_len, in_buf_len;
64b39f4a 7429 u64 id = KSMBD_NO_FID;
e2f34481
NJ		 7430 struct ksmbd_conn *conn = work->conn;
7431 int ret = 0;
7432
e5066499 7433 rsp_org = work->response_buf;
e2f34481 7434 if (work->next_smb2_rcv_hdr_off) {
8a893315
NJ		 7435 req = ksmbd_req_buf_next(work);
7436 rsp = ksmbd_resp_buf_next(work);
3867369e
NJ		 7437 if (!has_file_id(le64_to_cpu(req->VolatileFileId))) {
7438 ksmbd_debug(SMB, "Compound request set FID = %llu\n",
070fb21e 7439 work->compound_fid);
e2f34481
NJ		 7440 id = work->compound_fid;
7441 }
7442 } else {
e5066499
NJ		 7443 req = work->request_buf;
7444 rsp = work->response_buf;
e2f34481
NJ		 7445 }
7446
3867369e 7447 if (!has_file_id(id))
e2f34481
NJ		 7448 id = le64_to_cpu(req->VolatileFileId);
7449
7450 if (req->Flags != cpu_to_le32(SMB2_0_IOCTL_IS_FSCTL)) {
7451 rsp->hdr.Status = STATUS_NOT_SUPPORTED;
7452 goto out;
7453 }
7454
7455 cnt_code = le32_to_cpu(req->CntCode);
7456 out_buf_len = le32_to_cpu(req->MaxOutputResponse);
f7db8fd0
NJ		 7457 out_buf_len =
7458 min_t(u32, work->response_sz - work->next_smb2_rsp_hdr_off -
7459 (offsetof(struct smb2_ioctl_rsp, Buffer) - 4),
7460 out_buf_len);
7461 in_buf_len = le32_to_cpu(req->InputCount);
e2f34481
NJ		 7462
7463 switch (cnt_code) {
7464 case FSCTL_DFS_GET_REFERRALS:
7465 case FSCTL_DFS_GET_REFERRALS_EX:
7466 /* Not support DFS yet */
7467 rsp->hdr.Status = STATUS_FS_DRIVER_REQUIRED;
7468 goto out;
7469 case FSCTL_CREATE_OR_GET_OBJECT_ID:
7470 {
7471 struct file_object_buf_type1_ioctl_rsp *obj_buf;
7472
7473 nbytes = sizeof(struct file_object_buf_type1_ioctl_rsp);
7474 obj_buf = (struct file_object_buf_type1_ioctl_rsp *)
7475 &rsp->Buffer[0];
7476
7477 /*
7478 * TODO: This is dummy implementation to pass smbtorture
7479 * Need to check correct response later
7480 */
7481 memset(obj_buf->ObjectId, 0x0, 16);
7482 memset(obj_buf->BirthVolumeId, 0x0, 16);
7483 memset(obj_buf->BirthObjectId, 0x0, 16);
7484 memset(obj_buf->DomainId, 0x0, 16);
7485
7486 break;
7487 }
7488 case FSCTL_PIPE_TRANSCEIVE:
f7db8fd0 7489 out_buf_len = min_t(u32, KSMBD_IPC_MAX_PAYLOAD, out_buf_len);
e2f34481
NJ		 7490 nbytes = fsctl_pipe_transceive(work, id, out_buf_len, req, rsp);
7491 break;
7492 case FSCTL_VALIDATE_NEGOTIATE_INFO:
7493 if (conn->dialect < SMB30_PROT_ID) {
7494 ret = -EOPNOTSUPP;
7495 goto out;
7496 }
7497
f7db8fd0
NJ		 7498 if (in_buf_len < sizeof(struct validate_negotiate_info_req))
7499 return -EINVAL;
7500
7501 if (out_buf_len < sizeof(struct validate_negotiate_info_rsp))
7502 return -EINVAL;
7503
e2f34481
NJ		 7504 ret = fsctl_validate_negotiate_info(conn,
7505 (struct validate_negotiate_info_req *)&req->Buffer[0],
f7db8fd0
NJ		 7506 (struct validate_negotiate_info_rsp *)&rsp->Buffer[0],
7507 in_buf_len);
e2f34481
NJ		 7508 if (ret < 0)
7509 goto out;
7510
7511 nbytes = sizeof(struct validate_negotiate_info_rsp);
7512 rsp->PersistentFileId = cpu_to_le64(SMB2_NO_FID);
7513 rsp->VolatileFileId = cpu_to_le64(SMB2_NO_FID);
7514 break;
7515 case FSCTL_QUERY_NETWORK_INTERFACE_INFO:
f7db8fd0
NJ		 7516 ret = fsctl_query_iface_info_ioctl(conn, rsp, out_buf_len);
7517 if (ret < 0)
e2f34481 7518 goto out;
f7db8fd0 7519 nbytes = ret;
e2f34481
NJ		 7520 break;
7521 case FSCTL_REQUEST_RESUME_KEY:
7522 if (out_buf_len < sizeof(struct resume_key_ioctl_rsp)) {
7523 ret = -EINVAL;
7524 goto out;
7525 }
7526
7527 ret = fsctl_request_resume_key(work, req,
070fb21e 7528 (struct resume_key_ioctl_rsp *)&rsp->Buffer[0]);
e2f34481
NJ		 7529 if (ret < 0)
7530 goto out;
7531 rsp->PersistentFileId = req->PersistentFileId;
7532 rsp->VolatileFileId = req->VolatileFileId;
7533 nbytes = sizeof(struct resume_key_ioctl_rsp);
7534 break;
7535 case FSCTL_COPYCHUNK:
7536 case FSCTL_COPYCHUNK_WRITE:
64b39f4a 7537 if (!test_tree_conn_flag(work->tcon, KSMBD_TREE_CONN_FLAG_WRITABLE)) {
e2f34481 7538 ksmbd_debug(SMB,
070fb21e 7539 "User does not have write permission\n");
e2f34481
NJ		 7540 ret = -EACCES;
7541 goto out;
7542 }
7543
f7db8fd0
NJ		 7544 if (in_buf_len < sizeof(struct copychunk_ioctl_req)) {
7545 ret = -EINVAL;
7546 goto out;
7547 }
7548
e2f34481
NJ		 7549 if (out_buf_len < sizeof(struct copychunk_ioctl_rsp)) {
7550 ret = -EINVAL;
7551 goto out;
7552 }
7553
7554 nbytes = sizeof(struct copychunk_ioctl_rsp);
f7db8fd0
NJ		 7555 rsp->VolatileFileId = req->VolatileFileId;
7556 rsp->PersistentFileId = req->PersistentFileId;
7557 fsctl_copychunk(work,
7558 (struct copychunk_ioctl_req *)&req->Buffer[0],
7559 le32_to_cpu(req->CntCode),
7560 le32_to_cpu(req->InputCount),
7561 le64_to_cpu(req->VolatileFileId),
7562 le64_to_cpu(req->PersistentFileId),
7563 rsp);
e2f34481
NJ		 7564 break;
7565 case FSCTL_SET_SPARSE:
f7db8fd0
NJ		 7566 if (in_buf_len < sizeof(struct file_sparse)) {
7567 ret = -EINVAL;
7568 goto out;
7569 }
7570
e2f34481 7571 ret = fsctl_set_sparse(work, id,
070fb21e 7572 (struct file_sparse *)&req->Buffer[0]);
e2f34481
NJ		 7573 if (ret < 0)
7574 goto out;
7575 break;
7576 case FSCTL_SET_ZERO_DATA:
7577 {
7578 struct file_zero_data_information *zero_data;
7579 struct ksmbd_file *fp;
7580 loff_t off, len;
7581
64b39f4a 7582 if (!test_tree_conn_flag(work->tcon, KSMBD_TREE_CONN_FLAG_WRITABLE)) {
e2f34481 7583 ksmbd_debug(SMB,
070fb21e 7584 "User does not have write permission\n");
e2f34481
NJ		 7585 ret = -EACCES;
7586 goto out;
7587 }
7588
f7db8fd0
NJ		 7589 if (in_buf_len < sizeof(struct file_zero_data_information)) {
7590 ret = -EINVAL;
7591 goto out;
7592 }
7593
e2f34481
NJ		 7594 zero_data =
7595 (struct file_zero_data_information *)&req->Buffer[0];
7596
7597 fp = ksmbd_lookup_fd_fast(work, id);
7598 if (!fp) {
7599 ret = -ENOENT;
7600 goto out;
7601 }
7602
7603 off = le64_to_cpu(zero_data->FileOffset);
7604 len = le64_to_cpu(zero_data->BeyondFinalZero) - off;
7605
7606 ret = ksmbd_vfs_zero_data(work, fp, off, len);
7607 ksmbd_fd_put(work, fp);
7608 if (ret < 0)
7609 goto out;
7610 break;
7611 }
7612 case FSCTL_QUERY_ALLOCATED_RANGES:
f7db8fd0
NJ		 7613 if (in_buf_len < sizeof(struct file_allocated_range_buffer)) {
7614 ret = -EINVAL;
7615 goto out;
7616 }
7617
e2f34481
NJ		 7618 ret = fsctl_query_allocated_ranges(work, id,
7619 (struct file_allocated_range_buffer *)&req->Buffer[0],
7620 (struct file_allocated_range_buffer *)&rsp->Buffer[0],
7621 out_buf_len /
7622 sizeof(struct file_allocated_range_buffer), &nbytes);
7623 if (ret == -E2BIG) {
7624 rsp->hdr.Status = STATUS_BUFFER_OVERFLOW;
7625 } else if (ret < 0) {
7626 nbytes = 0;
7627 goto out;
7628 }
7629
7630 nbytes *= sizeof(struct file_allocated_range_buffer);
7631 break;
7632 case FSCTL_GET_REPARSE_POINT:
7633 {
7634 struct reparse_data_buffer *reparse_ptr;
7635 struct ksmbd_file *fp;
7636
7637 reparse_ptr = (struct reparse_data_buffer *)&rsp->Buffer[0];
7638 fp = ksmbd_lookup_fd_fast(work, id);
7639 if (!fp) {
bde1694a 7640 pr_err("not found fp!!\n");
e2f34481
NJ		 7641 ret = -ENOENT;
7642 goto out;
7643 }
7644
7645 reparse_ptr->ReparseTag =
ab0b263b 7646 smb2_get_reparse_tag_special_file(file_inode(fp->filp)->i_mode);
e2f34481
NJ		 7647 reparse_ptr->ReparseDataLength = 0;
7648 ksmbd_fd_put(work, fp);
7649 nbytes = sizeof(struct reparse_data_buffer);
7650 break;
7651 }
eb817368
NJ		 7652 case FSCTL_DUPLICATE_EXTENTS_TO_FILE:
7653 {
7654 struct ksmbd_file *fp_in, *fp_out = NULL;
7655 struct duplicate_extents_to_file *dup_ext;
7656 loff_t src_off, dst_off, length, cloned;
7657
f7db8fd0
NJ		 7658 if (in_buf_len < sizeof(struct duplicate_extents_to_file)) {
7659 ret = -EINVAL;
7660 goto out;
7661 }
7662
eb817368
NJ		 7663 dup_ext = (struct duplicate_extents_to_file *)&req->Buffer[0];
7664
7665 fp_in = ksmbd_lookup_fd_slow(work, dup_ext->VolatileFileHandle,
070fb21e 7666 dup_ext->PersistentFileHandle);
eb817368 7667 if (!fp_in) {
bde1694a 7668 pr_err("not found file handle in duplicate extent to file\n");
eb817368
NJ		 7669 ret = -ENOENT;
7670 goto out;
7671 }
7672
7673 fp_out = ksmbd_lookup_fd_fast(work, id);
7674 if (!fp_out) {
bde1694a 7675 pr_err("not found fp\n");
eb817368
NJ		 7676 ret = -ENOENT;
7677 goto dup_ext_out;
7678 }
7679
7680 src_off = le64_to_cpu(dup_ext->SourceFileOffset);
7681 dst_off = le64_to_cpu(dup_ext->TargetFileOffset);
7682 length = le64_to_cpu(dup_ext->ByteCount);
7683 cloned = vfs_clone_file_range(fp_in->filp, src_off, fp_out->filp,
070fb21e 7684 dst_off, length, 0);
eb817368
NJ		 7685 if (cloned == -EXDEV || cloned == -EOPNOTSUPP) {
7686 ret = -EOPNOTSUPP;
7687 goto dup_ext_out;
7688 } else if (cloned != length) {
f8524776
NJ		 7689 cloned = vfs_copy_file_range(fp_in->filp, src_off,
7690 fp_out->filp, dst_off, length, 0);
eb817368
NJ		 7691 if (cloned != length) {
7692 if (cloned < 0)
7693 ret = cloned;
7694 else
7695 ret = -EINVAL;
7696 }
7697 }
7698
7699dup_ext_out:
7700 ksmbd_fd_put(work, fp_in);
7701 ksmbd_fd_put(work, fp_out);
7702 if (ret < 0)
7703 goto out;
7704 break;
7705 }
e2f34481
NJ		 7706 default:
7707 ksmbd_debug(SMB, "not implemented yet ioctl command 0x%x\n",
070fb21e 7708 cnt_code);
e2f34481
NJ		 7709 ret = -EOPNOTSUPP;
7710 goto out;
7711 }
7712
7713 rsp->CntCode = cpu_to_le32(cnt_code);
7714 rsp->InputCount = cpu_to_le32(0);
7715 rsp->InputOffset = cpu_to_le32(112);
7716 rsp->OutputOffset = cpu_to_le32(112);
7717 rsp->OutputCount = cpu_to_le32(nbytes);
7718 rsp->StructureSize = cpu_to_le16(49);
7719 rsp->Reserved = cpu_to_le16(0);
7720 rsp->Flags = cpu_to_le32(0);
7721 rsp->Reserved2 = cpu_to_le32(0);
7722 inc_rfc1001_len(rsp_org, 48 + nbytes);
7723
7724 return 0;
7725
7726out:
7727 if (ret == -EACCES)
7728 rsp->hdr.Status = STATUS_ACCESS_DENIED;
7729 else if (ret == -ENOENT)
7730 rsp->hdr.Status = STATUS_OBJECT_NAME_NOT_FOUND;
7731 else if (ret == -EOPNOTSUPP)
7732 rsp->hdr.Status = STATUS_NOT_SUPPORTED;
f7db8fd0
NJ		 7733 else if (ret == -ENOSPC)
7734 rsp->hdr.Status = STATUS_BUFFER_TOO_SMALL;
e2f34481
NJ		 7735 else if (ret < 0 || rsp->hdr.Status == 0)
7736 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
7737 smb2_set_err_rsp(work);
7738 return 0;
7739}
7740
7741/**
7742 * smb20_oplock_break_ack() - handler for smb2.0 oplock break command
7743 * @work: smb work containing oplock break command buffer
7744 *
7745 * Return: 0
7746 */
7747static void smb20_oplock_break_ack(struct ksmbd_work *work)
7748{
e5066499
NJ		 7749 struct smb2_oplock_break *req = work->request_buf;
7750 struct smb2_oplock_break *rsp = work->response_buf;
e2f34481
NJ		 7751 struct ksmbd_file *fp;
7752 struct oplock_info *opinfo = NULL;
7753 __le32 err = 0;
7754 int ret = 0;
64b39f4a 7755 u64 volatile_id, persistent_id;
e2f34481
NJ		 7756 char req_oplevel = 0, rsp_oplevel = 0;
7757 unsigned int oplock_change_type;
7758
7759 volatile_id = le64_to_cpu(req->VolatileFid);
7760 persistent_id = le64_to_cpu(req->PersistentFid);
7761 req_oplevel = req->OplockLevel;
7762 ksmbd_debug(OPLOCK, "v_id %llu, p_id %llu request oplock level %d\n",
7763 volatile_id, persistent_id, req_oplevel);
7764
7765 fp = ksmbd_lookup_fd_slow(work, volatile_id, persistent_id);
7766 if (!fp) {
7767 rsp->hdr.Status = STATUS_FILE_CLOSED;
7768 smb2_set_err_rsp(work);
7769 return;
7770 }
7771
7772 opinfo = opinfo_get(fp);
7773 if (!opinfo) {
bde1694a 7774 pr_err("unexpected null oplock_info\n");
e2f34481
NJ		 7775 rsp->hdr.Status = STATUS_INVALID_OPLOCK_PROTOCOL;
7776 smb2_set_err_rsp(work);
7777 ksmbd_fd_put(work, fp);
7778 return;
7779 }
7780
7781 if (opinfo->level == SMB2_OPLOCK_LEVEL_NONE) {
7782 rsp->hdr.Status = STATUS_INVALID_OPLOCK_PROTOCOL;
7783 goto err_out;
7784 }
7785
7786 if (opinfo->op_state == OPLOCK_STATE_NONE) {
7787 ksmbd_debug(SMB, "unexpected oplock state 0x%x\n", opinfo->op_state);
7788 rsp->hdr.Status = STATUS_UNSUCCESSFUL;
7789 goto err_out;
7790 }
7791
64b39f4a
NJ		 7792 if ((opinfo->level == SMB2_OPLOCK_LEVEL_EXCLUSIVE ||
7793 opinfo->level == SMB2_OPLOCK_LEVEL_BATCH) &&
7794 (req_oplevel != SMB2_OPLOCK_LEVEL_II &&
7795 req_oplevel != SMB2_OPLOCK_LEVEL_NONE)) {
e2f34481
NJ		 7796 err = STATUS_INVALID_OPLOCK_PROTOCOL;
7797 oplock_change_type = OPLOCK_WRITE_TO_NONE;
64b39f4a
NJ		 7798 } else if (opinfo->level == SMB2_OPLOCK_LEVEL_II &&
7799 req_oplevel != SMB2_OPLOCK_LEVEL_NONE) {
e2f34481
NJ		 7800 err = STATUS_INVALID_OPLOCK_PROTOCOL;
7801 oplock_change_type = OPLOCK_READ_TO_NONE;
64b39f4a
NJ		 7802 } else if (req_oplevel == SMB2_OPLOCK_LEVEL_II ||
7803 req_oplevel == SMB2_OPLOCK_LEVEL_NONE) {
e2f34481 7804 err = STATUS_INVALID_DEVICE_STATE;
64b39f4a
NJ		 7805 if ((opinfo->level == SMB2_OPLOCK_LEVEL_EXCLUSIVE ||
7806 opinfo->level == SMB2_OPLOCK_LEVEL_BATCH) &&
7807 req_oplevel == SMB2_OPLOCK_LEVEL_II) {
e2f34481 7808 oplock_change_type = OPLOCK_WRITE_TO_READ;
64b39f4a
NJ		 7809 } else if ((opinfo->level == SMB2_OPLOCK_LEVEL_EXCLUSIVE ||
7810 opinfo->level == SMB2_OPLOCK_LEVEL_BATCH) &&
7811 req_oplevel == SMB2_OPLOCK_LEVEL_NONE) {
e2f34481 7812 oplock_change_type = OPLOCK_WRITE_TO_NONE;
64b39f4a
NJ		 7813 } else if (opinfo->level == SMB2_OPLOCK_LEVEL_II &&
7814 req_oplevel == SMB2_OPLOCK_LEVEL_NONE) {
e2f34481 7815 oplock_change_type = OPLOCK_READ_TO_NONE;
64b39f4a 7816 } else {
e2f34481 7817 oplock_change_type = 0;
64b39f4a
NJ		 7818 }
7819 } else {
e2f34481 7820 oplock_change_type = 0;
64b39f4a 7821 }
e2f34481
NJ		 7822
7823 switch (oplock_change_type) {
7824 case OPLOCK_WRITE_TO_READ:
7825 ret = opinfo_write_to_read(opinfo);
7826 rsp_oplevel = SMB2_OPLOCK_LEVEL_II;
7827 break;
7828 case OPLOCK_WRITE_TO_NONE:
7829 ret = opinfo_write_to_none(opinfo);
7830 rsp_oplevel = SMB2_OPLOCK_LEVEL_NONE;
7831 break;
7832 case OPLOCK_READ_TO_NONE:
7833 ret = opinfo_read_to_none(opinfo);
7834 rsp_oplevel = SMB2_OPLOCK_LEVEL_NONE;
7835 break;
7836 default:
bde1694a
NJ		 7837 pr_err("unknown oplock change 0x%x -> 0x%x\n",
7838 opinfo->level, rsp_oplevel);
e2f34481
NJ		 7839 }
7840
7841 if (ret < 0) {
7842 rsp->hdr.Status = err;
7843 goto err_out;
7844 }
7845
7846 opinfo_put(opinfo);
7847 ksmbd_fd_put(work, fp);
7848 opinfo->op_state = OPLOCK_STATE_NONE;
7849 wake_up_interruptible_all(&opinfo->oplock_q);
7850
7851 rsp->StructureSize = cpu_to_le16(24);
7852 rsp->OplockLevel = rsp_oplevel;
7853 rsp->Reserved = 0;
7854 rsp->Reserved2 = 0;
7855 rsp->VolatileFid = cpu_to_le64(volatile_id);
7856 rsp->PersistentFid = cpu_to_le64(persistent_id);
7857 inc_rfc1001_len(rsp, 24);
7858 return;
7859
7860err_out:
7861 opinfo->op_state = OPLOCK_STATE_NONE;
7862 wake_up_interruptible_all(&opinfo->oplock_q);
7863
7864 opinfo_put(opinfo);
7865 ksmbd_fd_put(work, fp);
7866 smb2_set_err_rsp(work);
7867}
7868
7869static int check_lease_state(struct lease *lease, __le32 req_state)
7870{
7871 if ((lease->new_state ==
64b39f4a
NJ		 7872 (SMB2_LEASE_READ_CACHING_LE | SMB2_LEASE_HANDLE_CACHING_LE)) &&
7873 !(req_state & SMB2_LEASE_WRITE_CACHING_LE)) {
e2f34481
NJ		 7874 lease->new_state = req_state;
7875 return 0;
7876 }
7877
7878 if (lease->new_state == req_state)
7879 return 0;
7880
7881 return 1;
7882}
7883
7884/**
7885 * smb21_lease_break_ack() - handler for smb2.1 lease break command
7886 * @work: smb work containing lease break command buffer
7887 *
7888 * Return: 0
7889 */
7890static void smb21_lease_break_ack(struct ksmbd_work *work)
7891{
7892 struct ksmbd_conn *conn = work->conn;
e5066499
NJ		 7893 struct smb2_lease_ack *req = work->request_buf;
7894 struct smb2_lease_ack *rsp = work->response_buf;
e2f34481
NJ		 7895 struct oplock_info *opinfo;
7896 __le32 err = 0;
7897 int ret = 0;
7898 unsigned int lease_change_type;
7899 __le32 lease_state;
7900 struct lease *lease;
7901
7902 ksmbd_debug(OPLOCK, "smb21 lease break, lease state(0x%x)\n",
070fb21e 7903 le32_to_cpu(req->LeaseState));
e2f34481
NJ		 7904 opinfo = lookup_lease_in_table(conn, req->LeaseKey);
7905 if (!opinfo) {
7906 ksmbd_debug(OPLOCK, "file not opened\n");
7907 smb2_set_err_rsp(work);
7908 rsp->hdr.Status = STATUS_UNSUCCESSFUL;
7909 return;
7910 }
7911 lease = opinfo->o_lease;
7912
7913 if (opinfo->op_state == OPLOCK_STATE_NONE) {
bde1694a
NJ		 7914 pr_err("unexpected lease break state 0x%x\n",
7915 opinfo->op_state);
e2f34481
NJ		 7916 rsp->hdr.Status = STATUS_UNSUCCESSFUL;
7917 goto err_out;
7918 }
7919
7920 if (check_lease_state(lease, req->LeaseState)) {
7921 rsp->hdr.Status = STATUS_REQUEST_NOT_ACCEPTED;
7922 ksmbd_debug(OPLOCK,
070fb21e
NJ		 7923 "req lease state: 0x%x, expected state: 0x%x\n",
7924 req->LeaseState, lease->new_state);
e2f34481
NJ		 7925 goto err_out;
7926 }
7927
7928 if (!atomic_read(&opinfo->breaking_cnt)) {
7929 rsp->hdr.Status = STATUS_UNSUCCESSFUL;
7930 goto err_out;
7931 }
7932
7933 /* check for bad lease state */
070fb21e
NJ		 7934 if (req->LeaseState &
7935 (~(SMB2_LEASE_READ_CACHING_LE | SMB2_LEASE_HANDLE_CACHING_LE))) {
e2f34481
NJ		 7936 err = STATUS_INVALID_OPLOCK_PROTOCOL;
7937 if (lease->state & SMB2_LEASE_WRITE_CACHING_LE)
7938 lease_change_type = OPLOCK_WRITE_TO_NONE;
7939 else
7940 lease_change_type = OPLOCK_READ_TO_NONE;
7941 ksmbd_debug(OPLOCK, "handle bad lease state 0x%x -> 0x%x\n",
070fb21e
NJ		 7942 le32_to_cpu(lease->state),
7943 le32_to_cpu(req->LeaseState));
64b39f4a
NJ		 7944 } else if (lease->state == SMB2_LEASE_READ_CACHING_LE &&
7945 req->LeaseState != SMB2_LEASE_NONE_LE) {
e2f34481
NJ		 7946 err = STATUS_INVALID_OPLOCK_PROTOCOL;
7947 lease_change_type = OPLOCK_READ_TO_NONE;
7948 ksmbd_debug(OPLOCK, "handle bad lease state 0x%x -> 0x%x\n",
070fb21e
NJ		 7949 le32_to_cpu(lease->state),
7950 le32_to_cpu(req->LeaseState));
e2f34481
NJ		 7951 } else {
7952 /* valid lease state changes */
7953 err = STATUS_INVALID_DEVICE_STATE;
7954 if (req->LeaseState == SMB2_LEASE_NONE_LE) {
7955 if (lease->state & SMB2_LEASE_WRITE_CACHING_LE)
7956 lease_change_type = OPLOCK_WRITE_TO_NONE;
7957 else
7958 lease_change_type = OPLOCK_READ_TO_NONE;
7959 } else if (req->LeaseState & SMB2_LEASE_READ_CACHING_LE) {
7960 if (lease->state & SMB2_LEASE_WRITE_CACHING_LE)
7961 lease_change_type = OPLOCK_WRITE_TO_READ;
7962 else
7963 lease_change_type = OPLOCK_READ_HANDLE_TO_READ;
64b39f4a 7964 } else {
e2f34481 7965 lease_change_type = 0;
64b39f4a 7966 }
e2f34481
NJ		 7967 }
7968
7969 switch (lease_change_type) {
7970 case OPLOCK_WRITE_TO_READ:
7971 ret = opinfo_write_to_read(opinfo);
7972 break;
7973 case OPLOCK_READ_HANDLE_TO_READ:
7974 ret = opinfo_read_handle_to_read(opinfo);
7975 break;
7976 case OPLOCK_WRITE_TO_NONE:
7977 ret = opinfo_write_to_none(opinfo);
7978 break;
7979 case OPLOCK_READ_TO_NONE:
7980 ret = opinfo_read_to_none(opinfo);
7981 break;
7982 default:
7983 ksmbd_debug(OPLOCK, "unknown lease change 0x%x -> 0x%x\n",
070fb21e
NJ		 7984 le32_to_cpu(lease->state),
7985 le32_to_cpu(req->LeaseState));
e2f34481
NJ		 7986 }
7987
7988 lease_state = lease->state;
7989 opinfo->op_state = OPLOCK_STATE_NONE;
7990 wake_up_interruptible_all(&opinfo->oplock_q);
7991 atomic_dec(&opinfo->breaking_cnt);
7992 wake_up_interruptible_all(&opinfo->oplock_brk);
7993 opinfo_put(opinfo);
7994
7995 if (ret < 0) {
7996 rsp->hdr.Status = err;
7997 goto err_out;
7998 }
7999
8000 rsp->StructureSize = cpu_to_le16(36);
8001 rsp->Reserved = 0;
8002 rsp->Flags = 0;
8003 memcpy(rsp->LeaseKey, req->LeaseKey, 16);
8004 rsp->LeaseState = lease_state;
8005 rsp->LeaseDuration = 0;
8006 inc_rfc1001_len(rsp, 36);
8007 return;
8008
8009err_out:
8010 opinfo->op_state = OPLOCK_STATE_NONE;
8011 wake_up_interruptible_all(&opinfo->oplock_q);
8012 atomic_dec(&opinfo->breaking_cnt);
8013 wake_up_interruptible_all(&opinfo->oplock_brk);
8014
8015 opinfo_put(opinfo);
8016 smb2_set_err_rsp(work);
8017}
8018
8019/**
8020 * smb2_oplock_break() - dispatcher for smb2.0 and 2.1 oplock/lease break
8021 * @work: smb work containing oplock/lease break command buffer
8022 *
8023 * Return: 0
8024 */
8025int smb2_oplock_break(struct ksmbd_work *work)
8026{
e5066499
NJ		 8027 struct smb2_oplock_break *req = work->request_buf;
8028 struct smb2_oplock_break *rsp = work->response_buf;
e2f34481
NJ		 8029
8030 switch (le16_to_cpu(req->StructureSize)) {
8031 case OP_BREAK_STRUCT_SIZE_20:
8032 smb20_oplock_break_ack(work);
8033 break;
8034 case OP_BREAK_STRUCT_SIZE_21:
8035 smb21_lease_break_ack(work);
8036 break;
8037 default:
8038 ksmbd_debug(OPLOCK, "invalid break cmd %d\n",
070fb21e 8039 le16_to_cpu(req->StructureSize));
e2f34481
NJ		 8040 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
8041 smb2_set_err_rsp(work);
8042 }
8043
8044 return 0;
8045}
8046
8047/**
8048 * smb2_notify() - handler for smb2 notify request
95fa1ce9 8049 * @work: smb work containing notify command buffer
e2f34481
NJ		 8050 *
8051 * Return: 0
8052 */
8053int smb2_notify(struct ksmbd_work *work)
8054{
8055 struct smb2_notify_req *req;
8056 struct smb2_notify_rsp *rsp;
8057
8058 WORK_BUFFERS(work, req, rsp);
8059
8060 if (work->next_smb2_rcv_hdr_off && req->hdr.NextCommand) {
8061 rsp->hdr.Status = STATUS_INTERNAL_ERROR;
8062 smb2_set_err_rsp(work);
8063 return 0;
8064 }
8065
8066 smb2_set_err_rsp(work);
8067 rsp->hdr.Status = STATUS_NOT_IMPLEMENTED;
8068 return 0;
8069}
8070
8071/**
8072 * smb2_is_sign_req() - handler for checking packet signing status
95fa1ce9
HL		 8073 * @work: smb work containing notify command buffer
8074 * @command: SMB2 command id
e2f34481
NJ		 8075 *
8076 * Return: true if packed is signed, false otherwise
8077 */
8078bool smb2_is_sign_req(struct ksmbd_work *work, unsigned int command)
8079{
e5066499 8080 struct smb2_hdr *rcv_hdr2 = work->request_buf;
e2f34481
NJ		 8081
8082 if ((rcv_hdr2->Flags & SMB2_FLAGS_SIGNED) &&
64b39f4a
NJ		 8083 command != SMB2_NEGOTIATE_HE &&
8084 command != SMB2_SESSION_SETUP_HE &&
8085 command != SMB2_OPLOCK_BREAK_HE)
e2f34481
NJ		 8086 return true;
8087
5616015f 8088 return false;
e2f34481
NJ		 8089}
8090
8091/**
8092 * smb2_check_sign_req() - handler for req packet sign processing
8093 * @work: smb work containing notify command buffer
8094 *
8095 * Return: 1 on success, 0 otherwise
8096 */
8097int smb2_check_sign_req(struct ksmbd_work *work)
8098{
8099 struct smb2_hdr *hdr, *hdr_org;
8100 char signature_req[SMB2_SIGNATURE_SIZE];
8101 char signature[SMB2_HMACSHA256_SIZE];
8102 struct kvec iov[1];
8103 size_t len;
8104
e5066499 8105 hdr_org = hdr = work->request_buf;
e2f34481 8106 if (work->next_smb2_rcv_hdr_off)
8a893315 8107 hdr = ksmbd_req_buf_next(work);
e2f34481
NJ		 8108
8109 if (!hdr->NextCommand && !work->next_smb2_rcv_hdr_off)
8110 len = be32_to_cpu(hdr_org->smb2_buf_length);
8111 else if (hdr->NextCommand)
8112 len = le32_to_cpu(hdr->NextCommand);
8113 else
8114 len = be32_to_cpu(hdr_org->smb2_buf_length) -
8115 work->next_smb2_rcv_hdr_off;
8116
8117 memcpy(signature_req, hdr->Signature, SMB2_SIGNATURE_SIZE);
8118 memset(hdr->Signature, 0, SMB2_SIGNATURE_SIZE);
8119
8120 iov[0].iov_base = (char *)&hdr->ProtocolId;
8121 iov[0].iov_len = len;
8122
8123 if (ksmbd_sign_smb2_pdu(work->conn, work->sess->sess_key, iov, 1,
64b39f4a 8124 signature))
e2f34481
NJ		 8125 return 0;
8126
8127 if (memcmp(signature, signature_req, SMB2_SIGNATURE_SIZE)) {
bde1694a 8128 pr_err("bad smb2 signature\n");
e2f34481
NJ		 8129 return 0;
8130 }
8131
8132 return 1;
8133}
8134
8135/**
8136 * smb2_set_sign_rsp() - handler for rsp packet sign processing
8137 * @work: smb work containing notify command buffer
8138 *
8139 */
8140void smb2_set_sign_rsp(struct ksmbd_work *work)
8141{
8142 struct smb2_hdr *hdr, *hdr_org;
8143 struct smb2_hdr *req_hdr;
8144 char signature[SMB2_HMACSHA256_SIZE];
8145 struct kvec iov[2];
8146 size_t len;
8147 int n_vec = 1;
8148
e5066499 8149 hdr_org = hdr = work->response_buf;
e2f34481 8150 if (work->next_smb2_rsp_hdr_off)
8a893315 8151 hdr = ksmbd_resp_buf_next(work);
e2f34481 8152
8a893315 8153 req_hdr = ksmbd_req_buf_next(work);
e2f34481
NJ		 8154
8155 if (!work->next_smb2_rsp_hdr_off) {
8156 len = get_rfc1002_len(hdr_org);
8157 if (req_hdr->NextCommand)
8158 len = ALIGN(len, 8);
8159 } else {
8160 len = get_rfc1002_len(hdr_org) - work->next_smb2_rsp_hdr_off;
8161 len = ALIGN(len, 8);
8162 }
8163
8164 if (req_hdr->NextCommand)
8165 hdr->NextCommand = cpu_to_le32(len);
8166
8167 hdr->Flags |= SMB2_FLAGS_SIGNED;
8168 memset(hdr->Signature, 0, SMB2_SIGNATURE_SIZE);
8169
8170 iov[0].iov_base = (char *)&hdr->ProtocolId;
8171 iov[0].iov_len = len;
8172
e5066499
NJ		 8173 if (work->aux_payload_sz) {
8174 iov[0].iov_len -= work->aux_payload_sz;
e2f34481 8175
e5066499
NJ		 8176 iov[1].iov_base = work->aux_payload_buf;
8177 iov[1].iov_len = work->aux_payload_sz;
e2f34481
NJ		 8178 n_vec++;
8179 }
8180
8181 if (!ksmbd_sign_smb2_pdu(work->conn, work->sess->sess_key, iov, n_vec,
64b39f4a 8182 signature))
e2f34481
NJ		 8183 memcpy(hdr->Signature, signature, SMB2_SIGNATURE_SIZE);
8184}
8185
8186/**
8187 * smb3_check_sign_req() - handler for req packet sign processing
8188 * @work: smb work containing notify command buffer
8189 *
8190 * Return: 1 on success, 0 otherwise
8191 */
8192int smb3_check_sign_req(struct ksmbd_work *work)
8193{
f5a544e3 8194 struct ksmbd_conn *conn = work->conn;
e2f34481
NJ		 8195 char *signing_key;
8196 struct smb2_hdr *hdr, *hdr_org;
8197 struct channel *chann;
8198 char signature_req[SMB2_SIGNATURE_SIZE];
8199 char signature[SMB2_CMACAES_SIZE];
8200 struct kvec iov[1];
8201 size_t len;
8202
e5066499 8203 hdr_org = hdr = work->request_buf;
e2f34481 8204 if (work->next_smb2_rcv_hdr_off)
8a893315 8205 hdr = ksmbd_req_buf_next(work);
e2f34481
NJ		 8206
8207 if (!hdr->NextCommand && !work->next_smb2_rcv_hdr_off)
8208 len = be32_to_cpu(hdr_org->smb2_buf_length);
8209 else if (hdr->NextCommand)
8210 len = le32_to_cpu(hdr->NextCommand);
8211 else
8212 len = be32_to_cpu(hdr_org->smb2_buf_length) -
8213 work->next_smb2_rcv_hdr_off;
8214
8215 if (le16_to_cpu(hdr->Command) == SMB2_SESSION_SETUP_HE) {
8216 signing_key = work->sess->smb3signingkey;
e2f34481 8217 } else {
f5a544e3 8218 chann = lookup_chann_list(work->sess, conn);
e2f34481
NJ		 8219 if (!chann)
8220 return 0;
8221 signing_key = chann->smb3signingkey;
e2f34481
NJ		 8222 }
8223
8224 if (!signing_key) {
bde1694a 8225 pr_err("SMB3 signing key is not generated\n");
e2f34481
NJ		 8226 return 0;
8227 }
8228
8229 memcpy(signature_req, hdr->Signature, SMB2_SIGNATURE_SIZE);
8230 memset(hdr->Signature, 0, SMB2_SIGNATURE_SIZE);
8231 iov[0].iov_base = (char *)&hdr->ProtocolId;
8232 iov[0].iov_len = len;
8233
8234 if (ksmbd_sign_smb3_pdu(conn, signing_key, iov, 1, signature))
8235 return 0;
8236
8237 if (memcmp(signature, signature_req, SMB2_SIGNATURE_SIZE)) {
bde1694a 8238 pr_err("bad smb2 signature\n");
e2f34481
NJ		 8239 return 0;
8240 }
8241
8242 return 1;
8243}
8244
8245/**
8246 * smb3_set_sign_rsp() - handler for rsp packet sign processing
8247 * @work: smb work containing notify command buffer
8248 *
8249 */
8250void smb3_set_sign_rsp(struct ksmbd_work *work)
8251{
f5a544e3 8252 struct ksmbd_conn *conn = work->conn;
e2f34481
NJ		 8253 struct smb2_hdr *req_hdr;
8254 struct smb2_hdr *hdr, *hdr_org;
8255 struct channel *chann;
8256 char signature[SMB2_CMACAES_SIZE];
8257 struct kvec iov[2];
8258 int n_vec = 1;
8259 size_t len;
8260 char *signing_key;
8261
e5066499 8262 hdr_org = hdr = work->response_buf;
e2f34481 8263 if (work->next_smb2_rsp_hdr_off)
8a893315 8264 hdr = ksmbd_resp_buf_next(work);
e2f34481 8265
8a893315 8266 req_hdr = ksmbd_req_buf_next(work);
e2f34481
NJ		 8267
8268 if (!work->next_smb2_rsp_hdr_off) {
8269 len = get_rfc1002_len(hdr_org);
8270 if (req_hdr->NextCommand)
8271 len = ALIGN(len, 8);
8272 } else {
8273 len = get_rfc1002_len(hdr_org) - work->next_smb2_rsp_hdr_off;
8274 len = ALIGN(len, 8);
8275 }
8276
08bdbc6e
NJ		 8277 if (conn->binding == false &&
8278 le16_to_cpu(hdr->Command) == SMB2_SESSION_SETUP_HE) {
e2f34481 8279 signing_key = work->sess->smb3signingkey;
e2f34481 8280 } else {
f5a544e3 8281 chann = lookup_chann_list(work->sess, work->conn);
e2f34481
NJ		 8282 if (!chann)
8283 return;
8284 signing_key = chann->smb3signingkey;
e2f34481
NJ		 8285 }
8286
8287 if (!signing_key)
8288 return;
8289
8290 if (req_hdr->NextCommand)
8291 hdr->NextCommand = cpu_to_le32(len);
8292
8293 hdr->Flags |= SMB2_FLAGS_SIGNED;
8294 memset(hdr->Signature, 0, SMB2_SIGNATURE_SIZE);
8295 iov[0].iov_base = (char *)&hdr->ProtocolId;
8296 iov[0].iov_len = len;
e5066499
NJ		 8297 if (work->aux_payload_sz) {
8298 iov[0].iov_len -= work->aux_payload_sz;
8299 iov[1].iov_base = work->aux_payload_buf;
8300 iov[1].iov_len = work->aux_payload_sz;
e2f34481
NJ		 8301 n_vec++;
8302 }
8303
8304 if (!ksmbd_sign_smb3_pdu(conn, signing_key, iov, n_vec, signature))
8305 memcpy(hdr->Signature, signature, SMB2_SIGNATURE_SIZE);
8306}
8307
8308/**
8309 * smb3_preauth_hash_rsp() - handler for computing preauth hash on response
8310 * @work: smb work containing response buffer
8311 *
8312 */
8313void smb3_preauth_hash_rsp(struct ksmbd_work *work)
8314{
8315 struct ksmbd_conn *conn = work->conn;
8316 struct ksmbd_session *sess = work->sess;
8317 struct smb2_hdr *req, *rsp;
8318
8319 if (conn->dialect != SMB311_PROT_ID)
8320 return;
8321
8322 WORK_BUFFERS(work, req, rsp);
8323
442ff9eb
NJ		 8324 if (le16_to_cpu(req->Command) == SMB2_NEGOTIATE_HE &&
8325 conn->preauth_info)
e2f34481 8326 ksmbd_gen_preauth_integrity_hash(conn, (char *)rsp,
070fb21e 8327 conn->preauth_info->Preauth_HashValue);
e2f34481 8328
f5a544e3 8329 if (le16_to_cpu(rsp->Command) == SMB2_SESSION_SETUP_HE && sess) {
e2f34481
NJ		 8330 __u8 *hash_value;
8331
f5a544e3
NJ		 8332 if (conn->binding) {
8333 struct preauth_session *preauth_sess;
8334
8335 preauth_sess = ksmbd_preauth_session_lookup(conn, sess->id);
8336 if (!preauth_sess)
8337 return;
8338 hash_value = preauth_sess->Preauth_HashValue;
8339 } else {
8340 hash_value = sess->Preauth_HashValue;
8341 if (!hash_value)
8342 return;
8343 }
e2f34481 8344 ksmbd_gen_preauth_integrity_hash(conn, (char *)rsp,
070fb21e 8345 hash_value);
e2f34481
NJ		 8346 }
8347}
8348
64b39f4a 8349static void fill_transform_hdr(struct smb2_transform_hdr *tr_hdr, char *old_buf,
070fb21e 8350 __le16 cipher_type)
e2f34481
NJ		 8351{
8352 struct smb2_hdr *hdr = (struct smb2_hdr *)old_buf;
8353 unsigned int orig_len = get_rfc1002_len(old_buf);
8354
8355 memset(tr_hdr, 0, sizeof(struct smb2_transform_hdr));
8356 tr_hdr->ProtocolId = SMB2_TRANSFORM_PROTO_NUM;
8357 tr_hdr->OriginalMessageSize = cpu_to_le32(orig_len);
8358 tr_hdr->Flags = cpu_to_le16(0x01);
5a0ca770
NJ		 8359 if (cipher_type == SMB2_ENCRYPTION_AES128_GCM ||
8360 cipher_type == SMB2_ENCRYPTION_AES256_GCM)
8361 get_random_bytes(&tr_hdr->Nonce, SMB3_AES_GCM_NONCE);
e2f34481 8362 else
5a0ca770 8363 get_random_bytes(&tr_hdr->Nonce, SMB3_AES_CCM_NONCE);
e2f34481
NJ		 8364 memcpy(&tr_hdr->SessionId, &hdr->SessionId, 8);
8365 inc_rfc1001_len(tr_hdr, sizeof(struct smb2_transform_hdr) - 4);
8366 inc_rfc1001_len(tr_hdr, orig_len);
8367}
8368
8369int smb3_encrypt_resp(struct ksmbd_work *work)
8370{
e5066499 8371 char *buf = work->response_buf;
e2f34481
NJ		 8372 struct smb2_transform_hdr *tr_hdr;
8373 struct kvec iov[3];
8374 int rc = -ENOMEM;
e5066499 8375 int buf_size = 0, rq_nvec = 2 + (work->aux_payload_sz ? 1 : 0);
e2f34481
NJ		 8376
8377 if (ARRAY_SIZE(iov) < rq_nvec)
8378 return -ENOMEM;
8379
20ea7fd2 8380 tr_hdr = kzalloc(sizeof(struct smb2_transform_hdr), GFP_KERNEL);
e2f34481
NJ		 8381 if (!tr_hdr)
8382 return rc;
8383
8384 /* fill transform header */
8385 fill_transform_hdr(tr_hdr, buf, work->conn->cipher_type);
8386
8387 iov[0].iov_base = tr_hdr;
8388 iov[0].iov_len = sizeof(struct smb2_transform_hdr);
8389 buf_size += iov[0].iov_len - 4;
8390
8391 iov[1].iov_base = buf + 4;
8392 iov[1].iov_len = get_rfc1002_len(buf);
e5066499
NJ		 8393 if (work->aux_payload_sz) {
8394 iov[1].iov_len = work->resp_hdr_sz - 4;
e2f34481 8395
e5066499
NJ		 8396 iov[2].iov_base = work->aux_payload_buf;
8397 iov[2].iov_len = work->aux_payload_sz;
e2f34481
NJ		 8398 buf_size += iov[2].iov_len;
8399 }
8400 buf_size += iov[1].iov_len;
8401 work->resp_hdr_sz = iov[1].iov_len;
8402
8403 rc = ksmbd_crypt_message(work->conn, iov, rq_nvec, 1);
8404 if (rc)
8405 return rc;
8406
8407 memmove(buf, iov[1].iov_base, iov[1].iov_len);
8408 tr_hdr->smb2_buf_length = cpu_to_be32(buf_size);
8409 work->tr_buf = tr_hdr;
8410
8411 return rc;
8412}
8413
f4228b67 8414bool smb3_is_transform_hdr(void *buf)
e2f34481
NJ		 8415{
8416 struct smb2_transform_hdr *trhdr = buf;
8417
8418 return trhdr->ProtocolId == SMB2_TRANSFORM_PROTO_NUM;
8419}
8420
8421int smb3_decrypt_req(struct ksmbd_work *work)
8422{
8423 struct ksmbd_conn *conn = work->conn;
8424 struct ksmbd_session *sess;
e5066499 8425 char *buf = work->request_buf;
e2f34481
NJ		 8426 struct smb2_hdr *hdr;
8427 unsigned int pdu_length = get_rfc1002_len(buf);
8428 struct kvec iov[2];
c7705eec 8429 int buf_data_size = pdu_length + 4 -
e2f34481
NJ		 8430 sizeof(struct smb2_transform_hdr);
8431 struct smb2_transform_hdr *tr_hdr = (struct smb2_transform_hdr *)buf;
e2f34481
NJ		 8432 int rc = 0;
8433
c7705eec 8434 if (buf_data_size < sizeof(struct smb2_hdr)) {
bde1694a
NJ		 8435 pr_err("Transform message is too small (%u)\n",
8436 pdu_length);
e2f34481
NJ		 8437 return -ECONNABORTED;
8438 }
8439
c7705eec 8440 if (buf_data_size < le32_to_cpu(tr_hdr->OriginalMessageSize)) {
bde1694a 8441 pr_err("Transform message is broken\n");
e2f34481
NJ		 8442 return -ECONNABORTED;
8443 }
8444
4227f811
NJ		 8445 sess = ksmbd_session_lookup_all(conn, le64_to_cpu(tr_hdr->SessionId));
8446 if (!sess) {
8447 pr_err("invalid session id(%llx) in transform header\n",
8448 le64_to_cpu(tr_hdr->SessionId));
8449 return -ECONNABORTED;
8450 }
8451
e2f34481
NJ		 8452 iov[0].iov_base = buf;
8453 iov[0].iov_len = sizeof(struct smb2_transform_hdr);
8454 iov[1].iov_base = buf + sizeof(struct smb2_transform_hdr);
8455 iov[1].iov_len = buf_data_size;
8456 rc = ksmbd_crypt_message(conn, iov, 2, 0);
8457 if (rc)
8458 return rc;
8459
8460 memmove(buf + 4, iov[1].iov_base, buf_data_size);
8461 hdr = (struct smb2_hdr *)buf;
8462 hdr->smb2_buf_length = cpu_to_be32(buf_data_size);
8463
8464 return rc;
8465}
8466
8467bool smb3_11_final_sess_setup_resp(struct ksmbd_work *work)
8468{
8469 struct ksmbd_conn *conn = work->conn;
e5066499 8470 struct smb2_hdr *rsp = work->response_buf;
e2f34481
NJ		 8471
8472 if (conn->dialect < SMB30_PROT_ID)
8473 return false;
8474
8475 if (work->next_smb2_rcv_hdr_off)
8a893315 8476 rsp = ksmbd_resp_buf_next(work);
e2f34481
NJ		 8477
8478 if (le16_to_cpu(rsp->Command) == SMB2_SESSION_SETUP_HE &&
64b39f4a 8479 rsp->Status == STATUS_SUCCESS)
e2f34481
NJ		 8480 return true;
8481 return false;
8482}
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