1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * Copyright (C) 2016 Namjae Jeon <linkinjeon@kernel.org>
4 * Copyright (C) 2018 Samsung Electronics Co., Ltd.
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>
13 #include <linux/falloc.h>
14 #include <linux/mount.h>
23 #include "connection.h"
24 #include "transport_ipc.h"
25 #include "transport_rdma.h"
27 #include "vfs_cache.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"
41 static void __wbuf(struct ksmbd_work *work, void **req, void **rsp)
43 if (work->next_smb2_rcv_hdr_off) {
44 *req = ksmbd_req_buf_next(work);
45 *rsp = ksmbd_resp_buf_next(work);
47 *req = smb2_get_msg(work->request_buf);
48 *rsp = smb2_get_msg(work->response_buf);
52 #define WORK_BUFFERS(w, rq, rs) __wbuf((w), (void **)&(rq), (void **)&(rs))
55 * check_session_id() - check for valid session id in smb header
56 * @conn: connection instance
57 * @id: session id from smb header
59 * Return: 1 if valid session id, otherwise 0
61 static inline bool check_session_id(struct ksmbd_conn *conn, u64 id)
63 struct ksmbd_session *sess;
65 if (id == 0 || id == -1)
68 sess = ksmbd_session_lookup_all(conn, id);
71 pr_err("Invalid user session id: %llu\n", id);
75 struct channel *lookup_chann_list(struct ksmbd_session *sess, struct ksmbd_conn *conn)
77 struct channel *chann;
79 list_for_each_entry(chann, &sess->ksmbd_chann_list, chann_list) {
80 if (chann->conn == conn)
88 * smb2_get_ksmbd_tcon() - get tree connection information using a tree id.
91 * Return: 0 if there is a tree connection matched or these are
92 * skipable commands, otherwise error
94 int smb2_get_ksmbd_tcon(struct ksmbd_work *work)
96 struct smb2_hdr *req_hdr = smb2_get_msg(work->request_buf);
97 unsigned int cmd = le16_to_cpu(req_hdr->Command);
101 if (cmd == SMB2_TREE_CONNECT_HE ||
102 cmd == SMB2_CANCEL_HE ||
103 cmd == SMB2_LOGOFF_HE) {
104 ksmbd_debug(SMB, "skip to check tree connect request\n");
108 if (xa_empty(&work->sess->tree_conns)) {
109 ksmbd_debug(SMB, "NO tree connected\n");
113 tree_id = le32_to_cpu(req_hdr->Id.SyncId.TreeId);
114 work->tcon = ksmbd_tree_conn_lookup(work->sess, tree_id);
116 pr_err("Invalid tid %d\n", tree_id);
124 * smb2_set_err_rsp() - set error response code on smb response
125 * @work: smb work containing response buffer
127 void smb2_set_err_rsp(struct ksmbd_work *work)
129 struct smb2_err_rsp *err_rsp;
131 if (work->next_smb2_rcv_hdr_off)
132 err_rsp = ksmbd_resp_buf_next(work);
134 err_rsp = smb2_get_msg(work->response_buf);
136 if (err_rsp->hdr.Status != STATUS_STOPPED_ON_SYMLINK) {
137 err_rsp->StructureSize = SMB2_ERROR_STRUCTURE_SIZE2_LE;
138 err_rsp->ErrorContextCount = 0;
139 err_rsp->Reserved = 0;
140 err_rsp->ByteCount = 0;
141 err_rsp->ErrorData[0] = 0;
142 inc_rfc1001_len(work->response_buf, SMB2_ERROR_STRUCTURE_SIZE2);
147 * is_smb2_neg_cmd() - is it smb2 negotiation command
148 * @work: smb work containing smb header
150 * Return: true if smb2 negotiation command, otherwise false
152 bool is_smb2_neg_cmd(struct ksmbd_work *work)
154 struct smb2_hdr *hdr = smb2_get_msg(work->request_buf);
156 /* is it SMB2 header ? */
157 if (hdr->ProtocolId != SMB2_PROTO_NUMBER)
160 /* make sure it is request not response message */
161 if (hdr->Flags & SMB2_FLAGS_SERVER_TO_REDIR)
164 if (hdr->Command != SMB2_NEGOTIATE)
171 * is_smb2_rsp() - is it smb2 response
172 * @work: smb work containing smb response buffer
174 * Return: true if smb2 response, otherwise false
176 bool is_smb2_rsp(struct ksmbd_work *work)
178 struct smb2_hdr *hdr = smb2_get_msg(work->response_buf);
180 /* is it SMB2 header ? */
181 if (hdr->ProtocolId != SMB2_PROTO_NUMBER)
184 /* make sure it is response not request message */
185 if (!(hdr->Flags & SMB2_FLAGS_SERVER_TO_REDIR))
192 * get_smb2_cmd_val() - get smb command code from smb header
193 * @work: smb work containing smb request buffer
195 * Return: smb2 request command value
197 u16 get_smb2_cmd_val(struct ksmbd_work *work)
199 struct smb2_hdr *rcv_hdr;
201 if (work->next_smb2_rcv_hdr_off)
202 rcv_hdr = ksmbd_req_buf_next(work);
204 rcv_hdr = smb2_get_msg(work->request_buf);
205 return le16_to_cpu(rcv_hdr->Command);
209 * set_smb2_rsp_status() - set error response code on smb2 header
210 * @work: smb work containing response buffer
211 * @err: error response code
213 void set_smb2_rsp_status(struct ksmbd_work *work, __le32 err)
215 struct smb2_hdr *rsp_hdr;
217 if (work->next_smb2_rcv_hdr_off)
218 rsp_hdr = ksmbd_resp_buf_next(work);
220 rsp_hdr = smb2_get_msg(work->response_buf);
221 rsp_hdr->Status = err;
222 smb2_set_err_rsp(work);
226 * init_smb2_neg_rsp() - initialize smb2 response for negotiate command
227 * @work: smb work containing smb request buffer
229 * smb2 negotiate response is sent in reply of smb1 negotiate command for
230 * dialect auto-negotiation.
232 int init_smb2_neg_rsp(struct ksmbd_work *work)
234 struct smb2_hdr *rsp_hdr;
235 struct smb2_negotiate_rsp *rsp;
236 struct ksmbd_conn *conn = work->conn;
238 if (conn->need_neg == false)
241 *(__be32 *)work->response_buf =
242 cpu_to_be32(conn->vals->header_size);
244 rsp_hdr = smb2_get_msg(work->response_buf);
245 memset(rsp_hdr, 0, sizeof(struct smb2_hdr) + 2);
246 rsp_hdr->ProtocolId = SMB2_PROTO_NUMBER;
247 rsp_hdr->StructureSize = SMB2_HEADER_STRUCTURE_SIZE;
248 rsp_hdr->CreditRequest = cpu_to_le16(2);
249 rsp_hdr->Command = SMB2_NEGOTIATE;
250 rsp_hdr->Flags = (SMB2_FLAGS_SERVER_TO_REDIR);
251 rsp_hdr->NextCommand = 0;
252 rsp_hdr->MessageId = 0;
253 rsp_hdr->Id.SyncId.ProcessId = 0;
254 rsp_hdr->Id.SyncId.TreeId = 0;
255 rsp_hdr->SessionId = 0;
256 memset(rsp_hdr->Signature, 0, 16);
258 rsp = smb2_get_msg(work->response_buf);
260 WARN_ON(ksmbd_conn_good(work));
262 rsp->StructureSize = cpu_to_le16(65);
263 ksmbd_debug(SMB, "conn->dialect 0x%x\n", conn->dialect);
264 rsp->DialectRevision = cpu_to_le16(conn->dialect);
265 /* Not setting conn guid rsp->ServerGUID, as it
266 * not used by client for identifying connection
268 rsp->Capabilities = cpu_to_le32(conn->vals->capabilities);
269 /* Default Max Message Size till SMB2.0, 64K*/
270 rsp->MaxTransactSize = cpu_to_le32(conn->vals->max_trans_size);
271 rsp->MaxReadSize = cpu_to_le32(conn->vals->max_read_size);
272 rsp->MaxWriteSize = cpu_to_le32(conn->vals->max_write_size);
274 rsp->SystemTime = cpu_to_le64(ksmbd_systime());
275 rsp->ServerStartTime = 0;
277 rsp->SecurityBufferOffset = cpu_to_le16(128);
278 rsp->SecurityBufferLength = cpu_to_le16(AUTH_GSS_LENGTH);
279 ksmbd_copy_gss_neg_header((char *)(&rsp->hdr) +
280 le16_to_cpu(rsp->SecurityBufferOffset));
281 inc_rfc1001_len(work->response_buf,
282 sizeof(struct smb2_negotiate_rsp) -
283 sizeof(struct smb2_hdr) - sizeof(rsp->Buffer) +
285 rsp->SecurityMode = SMB2_NEGOTIATE_SIGNING_ENABLED_LE;
286 if (server_conf.signing == KSMBD_CONFIG_OPT_MANDATORY)
287 rsp->SecurityMode |= SMB2_NEGOTIATE_SIGNING_REQUIRED_LE;
288 conn->use_spnego = true;
290 ksmbd_conn_set_need_negotiate(work);
295 * smb2_set_rsp_credits() - set number of credits in response buffer
296 * @work: smb work containing smb response buffer
298 int smb2_set_rsp_credits(struct ksmbd_work *work)
300 struct smb2_hdr *req_hdr = ksmbd_req_buf_next(work);
301 struct smb2_hdr *hdr = ksmbd_resp_buf_next(work);
302 struct ksmbd_conn *conn = work->conn;
303 unsigned short credits_requested, aux_max;
304 unsigned short credit_charge, credits_granted = 0;
306 if (work->send_no_response)
309 hdr->CreditCharge = req_hdr->CreditCharge;
311 if (conn->total_credits > conn->vals->max_credits) {
312 hdr->CreditRequest = 0;
313 pr_err("Total credits overflow: %d\n", conn->total_credits);
317 credit_charge = max_t(unsigned short,
318 le16_to_cpu(req_hdr->CreditCharge), 1);
319 if (credit_charge > conn->total_credits) {
320 ksmbd_debug(SMB, "Insufficient credits granted, given: %u, granted: %u\n",
321 credit_charge, conn->total_credits);
325 conn->total_credits -= credit_charge;
326 conn->outstanding_credits -= credit_charge;
327 credits_requested = max_t(unsigned short,
328 le16_to_cpu(req_hdr->CreditRequest), 1);
330 /* according to smb2.credits smbtorture, Windows server
331 * 2016 or later grant up to 8192 credits at once.
333 * TODO: Need to adjuct CreditRequest value according to
336 if (hdr->Command == SMB2_NEGOTIATE)
339 aux_max = conn->vals->max_credits - credit_charge;
340 credits_granted = min_t(unsigned short, credits_requested, aux_max);
342 if (conn->vals->max_credits - conn->total_credits < credits_granted)
343 credits_granted = conn->vals->max_credits -
346 conn->total_credits += credits_granted;
347 work->credits_granted += credits_granted;
349 if (!req_hdr->NextCommand) {
350 /* Update CreditRequest in last request */
351 hdr->CreditRequest = cpu_to_le16(work->credits_granted);
354 "credits: requested[%d] granted[%d] total_granted[%d]\n",
355 credits_requested, credits_granted,
356 conn->total_credits);
361 * init_chained_smb2_rsp() - initialize smb2 chained response
362 * @work: smb work containing smb response buffer
364 static void init_chained_smb2_rsp(struct ksmbd_work *work)
366 struct smb2_hdr *req = ksmbd_req_buf_next(work);
367 struct smb2_hdr *rsp = ksmbd_resp_buf_next(work);
368 struct smb2_hdr *rsp_hdr;
369 struct smb2_hdr *rcv_hdr;
370 int next_hdr_offset = 0;
373 /* Len of this response = updated RFC len - offset of previous cmd
374 * in the compound rsp
377 /* Storing the current local FID which may be needed by subsequent
378 * command in the compound request
380 if (req->Command == SMB2_CREATE && rsp->Status == STATUS_SUCCESS) {
381 work->compound_fid = ((struct smb2_create_rsp *)rsp)->VolatileFileId;
382 work->compound_pfid = ((struct smb2_create_rsp *)rsp)->PersistentFileId;
383 work->compound_sid = le64_to_cpu(rsp->SessionId);
386 len = get_rfc1002_len(work->response_buf) - work->next_smb2_rsp_hdr_off;
387 next_hdr_offset = le32_to_cpu(req->NextCommand);
389 new_len = ALIGN(len, 8);
390 inc_rfc1001_len(work->response_buf,
391 sizeof(struct smb2_hdr) + new_len - len);
392 rsp->NextCommand = cpu_to_le32(new_len);
394 work->next_smb2_rcv_hdr_off += next_hdr_offset;
395 work->next_smb2_rsp_hdr_off += new_len;
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);
401 rsp_hdr = ksmbd_resp_buf_next(work);
402 rcv_hdr = ksmbd_req_buf_next(work);
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;
409 memset((char *)rsp_hdr, 0, sizeof(struct smb2_hdr) + 2);
410 rsp_hdr->ProtocolId = SMB2_PROTO_NUMBER;
411 rsp_hdr->StructureSize = SMB2_HEADER_STRUCTURE_SIZE;
412 rsp_hdr->Command = rcv_hdr->Command;
415 * Message is response. We don't grant oplock yet.
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);
428 * is_chained_smb2_message() - check for chained command
429 * @work: smb work containing smb request buffer
431 * Return: true if chained request, otherwise false
433 bool is_chained_smb2_message(struct ksmbd_work *work)
435 struct smb2_hdr *hdr = smb2_get_msg(work->request_buf);
436 unsigned int len, next_cmd;
438 if (hdr->ProtocolId != SMB2_PROTO_NUMBER)
441 hdr = ksmbd_req_buf_next(work);
442 next_cmd = le32_to_cpu(hdr->NextCommand);
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",
452 if ((u64)get_rfc1002_len(work->response_buf) + MAX_CIFS_SMALL_BUFFER_SIZE >
454 pr_err("next response offset exceeds response buffer size\n");
458 ksmbd_debug(SMB, "got SMB2 chained command\n");
459 init_chained_smb2_rsp(work);
461 } else if (work->next_smb2_rcv_hdr_off) {
463 * This is last request in chained command,
464 * align response to 8 byte
466 len = ALIGN(get_rfc1002_len(work->response_buf), 8);
467 len = len - get_rfc1002_len(work->response_buf);
469 ksmbd_debug(SMB, "padding len %u\n", len);
470 inc_rfc1001_len(work->response_buf, len);
471 if (work->aux_payload_sz)
472 work->aux_payload_sz += len;
479 * init_smb2_rsp_hdr() - initialize smb2 response
480 * @work: smb work containing smb request buffer
484 int init_smb2_rsp_hdr(struct ksmbd_work *work)
486 struct smb2_hdr *rsp_hdr = smb2_get_msg(work->response_buf);
487 struct smb2_hdr *rcv_hdr = smb2_get_msg(work->request_buf);
488 struct ksmbd_conn *conn = work->conn;
490 memset(rsp_hdr, 0, sizeof(struct smb2_hdr) + 2);
491 *(__be32 *)work->response_buf =
492 cpu_to_be32(conn->vals->header_size);
493 rsp_hdr->ProtocolId = rcv_hdr->ProtocolId;
494 rsp_hdr->StructureSize = SMB2_HEADER_STRUCTURE_SIZE;
495 rsp_hdr->Command = rcv_hdr->Command;
498 * Message is response. We don't grant oplock yet.
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);
508 work->syncronous = true;
509 if (work->async_id) {
510 ksmbd_release_id(&conn->async_ida, work->async_id);
518 * smb2_allocate_rsp_buf() - allocate smb2 response buffer
519 * @work: smb work containing smb request buffer
521 * Return: 0 on success, otherwise -ENOMEM
523 int smb2_allocate_rsp_buf(struct ksmbd_work *work)
525 struct smb2_hdr *hdr = smb2_get_msg(work->request_buf);
526 size_t small_sz = MAX_CIFS_SMALL_BUFFER_SIZE;
527 size_t large_sz = small_sz + work->conn->vals->max_trans_size;
528 size_t sz = small_sz;
529 int cmd = le16_to_cpu(hdr->Command);
531 if (cmd == SMB2_IOCTL_HE || cmd == SMB2_QUERY_DIRECTORY_HE)
534 if (cmd == SMB2_QUERY_INFO_HE) {
535 struct smb2_query_info_req *req;
537 req = smb2_get_msg(work->request_buf);
538 if ((req->InfoType == SMB2_O_INFO_FILE &&
539 (req->FileInfoClass == FILE_FULL_EA_INFORMATION ||
540 req->FileInfoClass == FILE_ALL_INFORMATION)) ||
541 req->InfoType == SMB2_O_INFO_SECURITY)
545 /* allocate large response buf for chained commands */
546 if (le32_to_cpu(hdr->NextCommand) > 0)
549 work->response_buf = kvmalloc(sz, GFP_KERNEL | __GFP_ZERO);
550 if (!work->response_buf)
553 work->response_sz = sz;
558 * smb2_check_user_session() - check for valid session for a user
559 * @work: smb work containing smb request buffer
561 * Return: 0 on success, otherwise error
563 int smb2_check_user_session(struct ksmbd_work *work)
565 struct smb2_hdr *req_hdr = smb2_get_msg(work->request_buf);
566 struct ksmbd_conn *conn = work->conn;
567 unsigned int cmd = conn->ops->get_cmd_val(work);
568 unsigned long long sess_id;
572 * SMB2_ECHO, SMB2_NEGOTIATE, SMB2_SESSION_SETUP command do not
573 * require a session id, so no need to validate user session's for
576 if (cmd == SMB2_ECHO_HE || cmd == SMB2_NEGOTIATE_HE ||
577 cmd == SMB2_SESSION_SETUP_HE)
580 if (!ksmbd_conn_good(work))
583 sess_id = le64_to_cpu(req_hdr->SessionId);
584 /* Check for validity of user session */
585 work->sess = ksmbd_session_lookup_all(conn, sess_id);
588 ksmbd_debug(SMB, "Invalid user session, Uid %llu\n", sess_id);
592 static void destroy_previous_session(struct ksmbd_conn *conn,
593 struct ksmbd_user *user, u64 id)
595 struct ksmbd_session *prev_sess = ksmbd_session_lookup_slowpath(id);
596 struct ksmbd_user *prev_user;
597 struct channel *chann;
602 prev_user = prev_sess->user;
605 strcmp(user->name, prev_user->name) ||
606 user->passkey_sz != prev_user->passkey_sz ||
607 memcmp(user->passkey, prev_user->passkey, user->passkey_sz))
610 prev_sess->state = SMB2_SESSION_EXPIRED;
611 write_lock(&prev_sess->chann_lock);
612 list_for_each_entry(chann, &prev_sess->ksmbd_chann_list, chann_list)
613 chann->conn->status = KSMBD_SESS_EXITING;
614 write_unlock(&prev_sess->chann_lock);
618 * smb2_get_name() - get filename string from on the wire smb format
619 * @src: source buffer
620 * @maxlen: maxlen of source string
621 * @local_nls: nls_table pointer
623 * Return: matching converted filename on success, otherwise error ptr
626 smb2_get_name(const char *src, const int maxlen, struct nls_table *local_nls)
630 name = smb_strndup_from_utf16(src, maxlen, 1, local_nls);
632 pr_err("failed to get name %ld\n", PTR_ERR(name));
636 ksmbd_conv_path_to_unix(name);
637 ksmbd_strip_last_slash(name);
641 int setup_async_work(struct ksmbd_work *work, void (*fn)(void **), void **arg)
643 struct smb2_hdr *rsp_hdr;
644 struct ksmbd_conn *conn = work->conn;
647 rsp_hdr = smb2_get_msg(work->response_buf);
648 rsp_hdr->Flags |= SMB2_FLAGS_ASYNC_COMMAND;
650 id = ksmbd_acquire_async_msg_id(&conn->async_ida);
652 pr_err("Failed to alloc async message id\n");
655 work->syncronous = false;
657 rsp_hdr->Id.AsyncId = cpu_to_le64(id);
660 "Send interim Response to inform async request id : %d\n",
663 work->cancel_fn = fn;
664 work->cancel_argv = arg;
666 if (list_empty(&work->async_request_entry)) {
667 spin_lock(&conn->request_lock);
668 list_add_tail(&work->async_request_entry, &conn->async_requests);
669 spin_unlock(&conn->request_lock);
675 void smb2_send_interim_resp(struct ksmbd_work *work, __le32 status)
677 struct smb2_hdr *rsp_hdr;
679 rsp_hdr = smb2_get_msg(work->response_buf);
680 smb2_set_err_rsp(work);
681 rsp_hdr->Status = status;
684 ksmbd_conn_write(work);
689 static __le32 smb2_get_reparse_tag_special_file(umode_t mode)
691 if (S_ISDIR(mode) || S_ISREG(mode))
695 return IO_REPARSE_TAG_LX_SYMLINK_LE;
696 else if (S_ISFIFO(mode))
697 return IO_REPARSE_TAG_LX_FIFO_LE;
698 else if (S_ISSOCK(mode))
699 return IO_REPARSE_TAG_AF_UNIX_LE;
700 else if (S_ISCHR(mode))
701 return IO_REPARSE_TAG_LX_CHR_LE;
702 else if (S_ISBLK(mode))
703 return IO_REPARSE_TAG_LX_BLK_LE;
709 * smb2_get_dos_mode() - get file mode in dos format from unix mode
710 * @stat: kstat containing file mode
711 * @attribute: attribute flags
713 * Return: converted dos mode
715 static int smb2_get_dos_mode(struct kstat *stat, int attribute)
719 if (S_ISDIR(stat->mode)) {
720 attr = FILE_ATTRIBUTE_DIRECTORY |
721 (attribute & (FILE_ATTRIBUTE_HIDDEN | FILE_ATTRIBUTE_SYSTEM));
723 attr = (attribute & 0x00005137) | FILE_ATTRIBUTE_ARCHIVE;
724 attr &= ~(FILE_ATTRIBUTE_DIRECTORY);
725 if (S_ISREG(stat->mode) && (server_conf.share_fake_fscaps &
726 FILE_SUPPORTS_SPARSE_FILES))
727 attr |= FILE_ATTRIBUTE_SPARSE_FILE;
729 if (smb2_get_reparse_tag_special_file(stat->mode))
730 attr |= FILE_ATTRIBUTE_REPARSE_POINT;
736 static void build_preauth_ctxt(struct smb2_preauth_neg_context *pneg_ctxt,
739 pneg_ctxt->ContextType = SMB2_PREAUTH_INTEGRITY_CAPABILITIES;
740 pneg_ctxt->DataLength = cpu_to_le16(38);
741 pneg_ctxt->HashAlgorithmCount = cpu_to_le16(1);
742 pneg_ctxt->Reserved = cpu_to_le32(0);
743 pneg_ctxt->SaltLength = cpu_to_le16(SMB311_SALT_SIZE);
744 get_random_bytes(pneg_ctxt->Salt, SMB311_SALT_SIZE);
745 pneg_ctxt->HashAlgorithms = hash_id;
748 static void build_encrypt_ctxt(struct smb2_encryption_neg_context *pneg_ctxt,
751 pneg_ctxt->ContextType = SMB2_ENCRYPTION_CAPABILITIES;
752 pneg_ctxt->DataLength = cpu_to_le16(4);
753 pneg_ctxt->Reserved = cpu_to_le32(0);
754 pneg_ctxt->CipherCount = cpu_to_le16(1);
755 pneg_ctxt->Ciphers[0] = cipher_type;
758 static void build_compression_ctxt(struct smb2_compression_capabilities_context *pneg_ctxt,
761 pneg_ctxt->ContextType = SMB2_COMPRESSION_CAPABILITIES;
762 pneg_ctxt->DataLength =
763 cpu_to_le16(sizeof(struct smb2_compression_capabilities_context)
764 - sizeof(struct smb2_neg_context));
765 pneg_ctxt->Reserved = cpu_to_le32(0);
766 pneg_ctxt->CompressionAlgorithmCount = cpu_to_le16(1);
767 pneg_ctxt->Flags = cpu_to_le32(0);
768 pneg_ctxt->CompressionAlgorithms[0] = comp_algo;
771 static void build_sign_cap_ctxt(struct smb2_signing_capabilities *pneg_ctxt,
774 pneg_ctxt->ContextType = SMB2_SIGNING_CAPABILITIES;
775 pneg_ctxt->DataLength =
776 cpu_to_le16((sizeof(struct smb2_signing_capabilities) + 2)
777 - sizeof(struct smb2_neg_context));
778 pneg_ctxt->Reserved = cpu_to_le32(0);
779 pneg_ctxt->SigningAlgorithmCount = cpu_to_le16(1);
780 pneg_ctxt->SigningAlgorithms[0] = sign_algo;
783 static void build_posix_ctxt(struct smb2_posix_neg_context *pneg_ctxt)
785 pneg_ctxt->ContextType = SMB2_POSIX_EXTENSIONS_AVAILABLE;
786 pneg_ctxt->DataLength = cpu_to_le16(POSIX_CTXT_DATA_LEN);
787 /* SMB2_CREATE_TAG_POSIX is "0x93AD25509CB411E7B42383DE968BCD7C" */
788 pneg_ctxt->Name[0] = 0x93;
789 pneg_ctxt->Name[1] = 0xAD;
790 pneg_ctxt->Name[2] = 0x25;
791 pneg_ctxt->Name[3] = 0x50;
792 pneg_ctxt->Name[4] = 0x9C;
793 pneg_ctxt->Name[5] = 0xB4;
794 pneg_ctxt->Name[6] = 0x11;
795 pneg_ctxt->Name[7] = 0xE7;
796 pneg_ctxt->Name[8] = 0xB4;
797 pneg_ctxt->Name[9] = 0x23;
798 pneg_ctxt->Name[10] = 0x83;
799 pneg_ctxt->Name[11] = 0xDE;
800 pneg_ctxt->Name[12] = 0x96;
801 pneg_ctxt->Name[13] = 0x8B;
802 pneg_ctxt->Name[14] = 0xCD;
803 pneg_ctxt->Name[15] = 0x7C;
806 static void assemble_neg_contexts(struct ksmbd_conn *conn,
807 struct smb2_negotiate_rsp *rsp,
810 char *pneg_ctxt = (char *)rsp +
811 le32_to_cpu(rsp->NegotiateContextOffset);
812 int neg_ctxt_cnt = 1;
816 "assemble SMB2_PREAUTH_INTEGRITY_CAPABILITIES context\n");
817 build_preauth_ctxt((struct smb2_preauth_neg_context *)pneg_ctxt,
818 conn->preauth_info->Preauth_HashId);
819 rsp->NegotiateContextCount = cpu_to_le16(neg_ctxt_cnt);
820 inc_rfc1001_len(smb2_buf_len, AUTH_GSS_PADDING);
821 ctxt_size = sizeof(struct smb2_preauth_neg_context);
822 /* Round to 8 byte boundary */
823 pneg_ctxt += round_up(sizeof(struct smb2_preauth_neg_context), 8);
825 if (conn->cipher_type) {
826 ctxt_size = round_up(ctxt_size, 8);
828 "assemble SMB2_ENCRYPTION_CAPABILITIES context\n");
829 build_encrypt_ctxt((struct smb2_encryption_neg_context *)pneg_ctxt,
831 rsp->NegotiateContextCount = cpu_to_le16(++neg_ctxt_cnt);
832 ctxt_size += sizeof(struct smb2_encryption_neg_context) + 2;
833 /* Round to 8 byte boundary */
835 round_up(sizeof(struct smb2_encryption_neg_context) + 2,
839 if (conn->compress_algorithm) {
840 ctxt_size = round_up(ctxt_size, 8);
842 "assemble SMB2_COMPRESSION_CAPABILITIES context\n");
843 /* Temporarily set to SMB3_COMPRESS_NONE */
844 build_compression_ctxt((struct smb2_compression_capabilities_context *)pneg_ctxt,
845 conn->compress_algorithm);
846 rsp->NegotiateContextCount = cpu_to_le16(++neg_ctxt_cnt);
847 ctxt_size += sizeof(struct smb2_compression_capabilities_context) + 2;
848 /* Round to 8 byte boundary */
849 pneg_ctxt += round_up(sizeof(struct smb2_compression_capabilities_context) + 2,
853 if (conn->posix_ext_supported) {
854 ctxt_size = round_up(ctxt_size, 8);
856 "assemble SMB2_POSIX_EXTENSIONS_AVAILABLE context\n");
857 build_posix_ctxt((struct smb2_posix_neg_context *)pneg_ctxt);
858 rsp->NegotiateContextCount = cpu_to_le16(++neg_ctxt_cnt);
859 ctxt_size += sizeof(struct smb2_posix_neg_context);
860 /* Round to 8 byte boundary */
861 pneg_ctxt += round_up(sizeof(struct smb2_posix_neg_context), 8);
864 if (conn->signing_negotiated) {
865 ctxt_size = round_up(ctxt_size, 8);
867 "assemble SMB2_SIGNING_CAPABILITIES context\n");
868 build_sign_cap_ctxt((struct smb2_signing_capabilities *)pneg_ctxt,
869 conn->signing_algorithm);
870 rsp->NegotiateContextCount = cpu_to_le16(++neg_ctxt_cnt);
871 ctxt_size += sizeof(struct smb2_signing_capabilities) + 2;
874 inc_rfc1001_len(smb2_buf_len, ctxt_size);
877 static __le32 decode_preauth_ctxt(struct ksmbd_conn *conn,
878 struct smb2_preauth_neg_context *pneg_ctxt)
880 __le32 err = STATUS_NO_PREAUTH_INTEGRITY_HASH_OVERLAP;
882 if (pneg_ctxt->HashAlgorithms == SMB2_PREAUTH_INTEGRITY_SHA512) {
883 conn->preauth_info->Preauth_HashId =
884 SMB2_PREAUTH_INTEGRITY_SHA512;
885 err = STATUS_SUCCESS;
891 static void decode_encrypt_ctxt(struct ksmbd_conn *conn,
892 struct smb2_encryption_neg_context *pneg_ctxt,
895 int cph_cnt = le16_to_cpu(pneg_ctxt->CipherCount);
896 int i, cphs_size = cph_cnt * sizeof(__le16);
898 conn->cipher_type = 0;
900 if (sizeof(struct smb2_encryption_neg_context) + cphs_size >
902 pr_err("Invalid cipher count(%d)\n", cph_cnt);
906 if (!(server_conf.flags & KSMBD_GLOBAL_FLAG_SMB2_ENCRYPTION))
909 for (i = 0; i < cph_cnt; i++) {
910 if (pneg_ctxt->Ciphers[i] == SMB2_ENCRYPTION_AES128_GCM ||
911 pneg_ctxt->Ciphers[i] == SMB2_ENCRYPTION_AES128_CCM ||
912 pneg_ctxt->Ciphers[i] == SMB2_ENCRYPTION_AES256_CCM ||
913 pneg_ctxt->Ciphers[i] == SMB2_ENCRYPTION_AES256_GCM) {
914 ksmbd_debug(SMB, "Cipher ID = 0x%x\n",
915 pneg_ctxt->Ciphers[i]);
916 conn->cipher_type = pneg_ctxt->Ciphers[i];
923 * smb3_encryption_negotiated() - checks if server and client agreed on enabling encryption
924 * @conn: smb connection
926 * Return: true if connection should be encrypted, else false
928 static bool smb3_encryption_negotiated(struct ksmbd_conn *conn)
930 if (!conn->ops->generate_encryptionkey)
934 * SMB 3.0 and 3.0.2 dialects use the SMB2_GLOBAL_CAP_ENCRYPTION flag.
935 * SMB 3.1.1 uses the cipher_type field.
937 return (conn->vals->capabilities & SMB2_GLOBAL_CAP_ENCRYPTION) ||
941 static void decode_compress_ctxt(struct ksmbd_conn *conn,
942 struct smb2_compression_capabilities_context *pneg_ctxt)
944 conn->compress_algorithm = SMB3_COMPRESS_NONE;
947 static void decode_sign_cap_ctxt(struct ksmbd_conn *conn,
948 struct smb2_signing_capabilities *pneg_ctxt,
951 int sign_algo_cnt = le16_to_cpu(pneg_ctxt->SigningAlgorithmCount);
952 int i, sign_alos_size = sign_algo_cnt * sizeof(__le16);
954 conn->signing_negotiated = false;
956 if (sizeof(struct smb2_signing_capabilities) + sign_alos_size >
958 pr_err("Invalid signing algorithm count(%d)\n", sign_algo_cnt);
962 for (i = 0; i < sign_algo_cnt; i++) {
963 if (pneg_ctxt->SigningAlgorithms[i] == SIGNING_ALG_HMAC_SHA256_LE ||
964 pneg_ctxt->SigningAlgorithms[i] == SIGNING_ALG_AES_CMAC_LE) {
965 ksmbd_debug(SMB, "Signing Algorithm ID = 0x%x\n",
966 pneg_ctxt->SigningAlgorithms[i]);
967 conn->signing_negotiated = true;
968 conn->signing_algorithm =
969 pneg_ctxt->SigningAlgorithms[i];
975 static __le32 deassemble_neg_contexts(struct ksmbd_conn *conn,
976 struct smb2_negotiate_req *req,
979 /* +4 is to account for the RFC1001 len field */
980 struct smb2_neg_context *pctx = (struct smb2_neg_context *)req;
981 int i = 0, len_of_ctxts;
982 int offset = le32_to_cpu(req->NegotiateContextOffset);
983 int neg_ctxt_cnt = le16_to_cpu(req->NegotiateContextCount);
984 __le32 status = STATUS_INVALID_PARAMETER;
986 ksmbd_debug(SMB, "decoding %d negotiate contexts\n", neg_ctxt_cnt);
987 if (len_of_smb <= offset) {
988 ksmbd_debug(SMB, "Invalid response: negotiate context offset\n");
992 len_of_ctxts = len_of_smb - offset;
994 while (i++ < neg_ctxt_cnt) {
997 /* check that offset is not beyond end of SMB */
998 if (len_of_ctxts == 0)
1001 if (len_of_ctxts < sizeof(struct smb2_neg_context))
1004 pctx = (struct smb2_neg_context *)((char *)pctx + offset);
1005 clen = le16_to_cpu(pctx->DataLength);
1006 if (clen + sizeof(struct smb2_neg_context) > len_of_ctxts)
1009 if (pctx->ContextType == SMB2_PREAUTH_INTEGRITY_CAPABILITIES) {
1011 "deassemble SMB2_PREAUTH_INTEGRITY_CAPABILITIES context\n");
1012 if (conn->preauth_info->Preauth_HashId)
1015 status = decode_preauth_ctxt(conn,
1016 (struct smb2_preauth_neg_context *)pctx);
1017 if (status != STATUS_SUCCESS)
1019 } else if (pctx->ContextType == SMB2_ENCRYPTION_CAPABILITIES) {
1021 "deassemble SMB2_ENCRYPTION_CAPABILITIES context\n");
1022 if (conn->cipher_type)
1025 decode_encrypt_ctxt(conn,
1026 (struct smb2_encryption_neg_context *)pctx,
1028 } else if (pctx->ContextType == SMB2_COMPRESSION_CAPABILITIES) {
1030 "deassemble SMB2_COMPRESSION_CAPABILITIES context\n");
1031 if (conn->compress_algorithm)
1034 decode_compress_ctxt(conn,
1035 (struct smb2_compression_capabilities_context *)pctx);
1036 } else if (pctx->ContextType == SMB2_NETNAME_NEGOTIATE_CONTEXT_ID) {
1038 "deassemble SMB2_NETNAME_NEGOTIATE_CONTEXT_ID context\n");
1039 } else if (pctx->ContextType == SMB2_POSIX_EXTENSIONS_AVAILABLE) {
1041 "deassemble SMB2_POSIX_EXTENSIONS_AVAILABLE context\n");
1042 conn->posix_ext_supported = true;
1043 } else if (pctx->ContextType == SMB2_SIGNING_CAPABILITIES) {
1045 "deassemble SMB2_SIGNING_CAPABILITIES context\n");
1046 decode_sign_cap_ctxt(conn,
1047 (struct smb2_signing_capabilities *)pctx,
1051 /* offsets must be 8 byte aligned */
1052 clen = (clen + 7) & ~0x7;
1053 offset = clen + sizeof(struct smb2_neg_context);
1054 len_of_ctxts -= clen + sizeof(struct smb2_neg_context);
1060 * smb2_handle_negotiate() - handler for smb2 negotiate command
1061 * @work: smb work containing smb request buffer
1065 int smb2_handle_negotiate(struct ksmbd_work *work)
1067 struct ksmbd_conn *conn = work->conn;
1068 struct smb2_negotiate_req *req = smb2_get_msg(work->request_buf);
1069 struct smb2_negotiate_rsp *rsp = smb2_get_msg(work->response_buf);
1071 unsigned int smb2_buf_len, smb2_neg_size;
1074 ksmbd_debug(SMB, "Received negotiate request\n");
1075 conn->need_neg = false;
1076 if (ksmbd_conn_good(work)) {
1077 pr_err("conn->tcp_status is already in CifsGood State\n");
1078 work->send_no_response = 1;
1082 if (req->DialectCount == 0) {
1083 pr_err("malformed packet\n");
1084 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
1089 smb2_buf_len = get_rfc1002_len(work->request_buf);
1090 smb2_neg_size = offsetof(struct smb2_negotiate_req, Dialects);
1091 if (smb2_neg_size > smb2_buf_len) {
1092 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
1097 if (conn->dialect == SMB311_PROT_ID) {
1098 unsigned int nego_ctxt_off = le32_to_cpu(req->NegotiateContextOffset);
1100 if (smb2_buf_len < nego_ctxt_off) {
1101 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
1106 if (smb2_neg_size > nego_ctxt_off) {
1107 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
1112 if (smb2_neg_size + le16_to_cpu(req->DialectCount) * sizeof(__le16) >
1114 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
1119 if (smb2_neg_size + le16_to_cpu(req->DialectCount) * sizeof(__le16) >
1121 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
1127 conn->cli_cap = le32_to_cpu(req->Capabilities);
1128 switch (conn->dialect) {
1129 case SMB311_PROT_ID:
1130 conn->preauth_info =
1131 kzalloc(sizeof(struct preauth_integrity_info),
1133 if (!conn->preauth_info) {
1135 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
1139 status = deassemble_neg_contexts(conn, req,
1140 get_rfc1002_len(work->request_buf));
1141 if (status != STATUS_SUCCESS) {
1142 pr_err("deassemble_neg_contexts error(0x%x)\n",
1144 rsp->hdr.Status = status;
1146 kfree(conn->preauth_info);
1147 conn->preauth_info = NULL;
1151 rc = init_smb3_11_server(conn);
1153 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
1154 kfree(conn->preauth_info);
1155 conn->preauth_info = NULL;
1159 ksmbd_gen_preauth_integrity_hash(conn,
1161 conn->preauth_info->Preauth_HashValue);
1162 rsp->NegotiateContextOffset =
1163 cpu_to_le32(OFFSET_OF_NEG_CONTEXT);
1164 assemble_neg_contexts(conn, rsp, work->response_buf);
1166 case SMB302_PROT_ID:
1167 init_smb3_02_server(conn);
1170 init_smb3_0_server(conn);
1173 init_smb2_1_server(conn);
1178 ksmbd_debug(SMB, "Server dialect :0x%x not supported\n",
1180 rsp->hdr.Status = STATUS_NOT_SUPPORTED;
1184 rsp->Capabilities = cpu_to_le32(conn->vals->capabilities);
1187 conn->connection_type = conn->dialect;
1189 rsp->MaxTransactSize = cpu_to_le32(conn->vals->max_trans_size);
1190 rsp->MaxReadSize = cpu_to_le32(conn->vals->max_read_size);
1191 rsp->MaxWriteSize = cpu_to_le32(conn->vals->max_write_size);
1193 memcpy(conn->ClientGUID, req->ClientGUID,
1194 SMB2_CLIENT_GUID_SIZE);
1195 conn->cli_sec_mode = le16_to_cpu(req->SecurityMode);
1197 rsp->StructureSize = cpu_to_le16(65);
1198 rsp->DialectRevision = cpu_to_le16(conn->dialect);
1199 /* Not setting conn guid rsp->ServerGUID, as it
1200 * not used by client for identifying server
1202 memset(rsp->ServerGUID, 0, SMB2_CLIENT_GUID_SIZE);
1204 rsp->SystemTime = cpu_to_le64(ksmbd_systime());
1205 rsp->ServerStartTime = 0;
1206 ksmbd_debug(SMB, "negotiate context offset %d, count %d\n",
1207 le32_to_cpu(rsp->NegotiateContextOffset),
1208 le16_to_cpu(rsp->NegotiateContextCount));
1210 rsp->SecurityBufferOffset = cpu_to_le16(128);
1211 rsp->SecurityBufferLength = cpu_to_le16(AUTH_GSS_LENGTH);
1212 ksmbd_copy_gss_neg_header((char *)(&rsp->hdr) +
1213 le16_to_cpu(rsp->SecurityBufferOffset));
1214 inc_rfc1001_len(work->response_buf, sizeof(struct smb2_negotiate_rsp) -
1215 sizeof(struct smb2_hdr) - sizeof(rsp->Buffer) +
1217 rsp->SecurityMode = SMB2_NEGOTIATE_SIGNING_ENABLED_LE;
1218 conn->use_spnego = true;
1220 if ((server_conf.signing == KSMBD_CONFIG_OPT_AUTO ||
1221 server_conf.signing == KSMBD_CONFIG_OPT_DISABLED) &&
1222 req->SecurityMode & SMB2_NEGOTIATE_SIGNING_REQUIRED_LE)
1224 else if (server_conf.signing == KSMBD_CONFIG_OPT_MANDATORY) {
1225 server_conf.enforced_signing = true;
1226 rsp->SecurityMode |= SMB2_NEGOTIATE_SIGNING_REQUIRED_LE;
1230 conn->srv_sec_mode = le16_to_cpu(rsp->SecurityMode);
1231 ksmbd_conn_set_need_negotiate(work);
1235 smb2_set_err_rsp(work);
1240 static int alloc_preauth_hash(struct ksmbd_session *sess,
1241 struct ksmbd_conn *conn)
1243 if (sess->Preauth_HashValue)
1246 sess->Preauth_HashValue = kmemdup(conn->preauth_info->Preauth_HashValue,
1247 PREAUTH_HASHVALUE_SIZE, GFP_KERNEL);
1248 if (!sess->Preauth_HashValue)
1254 static int generate_preauth_hash(struct ksmbd_work *work)
1256 struct ksmbd_conn *conn = work->conn;
1257 struct ksmbd_session *sess = work->sess;
1260 if (conn->dialect != SMB311_PROT_ID)
1263 if (conn->binding) {
1264 struct preauth_session *preauth_sess;
1266 preauth_sess = ksmbd_preauth_session_lookup(conn, sess->id);
1267 if (!preauth_sess) {
1268 preauth_sess = ksmbd_preauth_session_alloc(conn, sess->id);
1273 preauth_hash = preauth_sess->Preauth_HashValue;
1275 if (!sess->Preauth_HashValue)
1276 if (alloc_preauth_hash(sess, conn))
1278 preauth_hash = sess->Preauth_HashValue;
1281 ksmbd_gen_preauth_integrity_hash(conn, work->request_buf, preauth_hash);
1285 static int decode_negotiation_token(struct ksmbd_conn *conn,
1286 struct negotiate_message *negblob,
1289 if (!conn->use_spnego)
1292 if (ksmbd_decode_negTokenInit((char *)negblob, sz, conn)) {
1293 if (ksmbd_decode_negTokenTarg((char *)negblob, sz, conn)) {
1294 conn->auth_mechs |= KSMBD_AUTH_NTLMSSP;
1295 conn->preferred_auth_mech = KSMBD_AUTH_NTLMSSP;
1296 conn->use_spnego = false;
1302 static int ntlm_negotiate(struct ksmbd_work *work,
1303 struct negotiate_message *negblob,
1306 struct smb2_sess_setup_rsp *rsp = smb2_get_msg(work->response_buf);
1307 struct challenge_message *chgblob;
1308 unsigned char *spnego_blob = NULL;
1309 u16 spnego_blob_len;
1313 ksmbd_debug(SMB, "negotiate phase\n");
1314 rc = ksmbd_decode_ntlmssp_neg_blob(negblob, negblob_len, work->conn);
1318 sz = le16_to_cpu(rsp->SecurityBufferOffset);
1320 (struct challenge_message *)((char *)&rsp->hdr.ProtocolId + sz);
1321 memset(chgblob, 0, sizeof(struct challenge_message));
1323 if (!work->conn->use_spnego) {
1324 sz = ksmbd_build_ntlmssp_challenge_blob(chgblob, work->conn);
1328 rsp->SecurityBufferLength = cpu_to_le16(sz);
1332 sz = sizeof(struct challenge_message);
1333 sz += (strlen(ksmbd_netbios_name()) * 2 + 1 + 4) * 6;
1335 neg_blob = kzalloc(sz, GFP_KERNEL);
1339 chgblob = (struct challenge_message *)neg_blob;
1340 sz = ksmbd_build_ntlmssp_challenge_blob(chgblob, work->conn);
1346 rc = build_spnego_ntlmssp_neg_blob(&spnego_blob, &spnego_blob_len,
1353 sz = le16_to_cpu(rsp->SecurityBufferOffset);
1354 memcpy((char *)&rsp->hdr.ProtocolId + sz, spnego_blob, spnego_blob_len);
1355 rsp->SecurityBufferLength = cpu_to_le16(spnego_blob_len);
1363 static struct authenticate_message *user_authblob(struct ksmbd_conn *conn,
1364 struct smb2_sess_setup_req *req)
1368 if (conn->use_spnego && conn->mechToken)
1369 return (struct authenticate_message *)conn->mechToken;
1371 sz = le16_to_cpu(req->SecurityBufferOffset);
1372 return (struct authenticate_message *)((char *)&req->hdr.ProtocolId
1376 static struct ksmbd_user *session_user(struct ksmbd_conn *conn,
1377 struct smb2_sess_setup_req *req)
1379 struct authenticate_message *authblob;
1380 struct ksmbd_user *user;
1382 unsigned int auth_msg_len, name_off, name_len, secbuf_len;
1384 secbuf_len = le16_to_cpu(req->SecurityBufferLength);
1385 if (secbuf_len < sizeof(struct authenticate_message)) {
1386 ksmbd_debug(SMB, "blob len %d too small\n", secbuf_len);
1389 authblob = user_authblob(conn, req);
1390 name_off = le32_to_cpu(authblob->UserName.BufferOffset);
1391 name_len = le16_to_cpu(authblob->UserName.Length);
1392 auth_msg_len = le16_to_cpu(req->SecurityBufferOffset) + secbuf_len;
1394 if (auth_msg_len < (u64)name_off + name_len)
1397 name = smb_strndup_from_utf16((const char *)authblob + name_off,
1402 pr_err("cannot allocate memory\n");
1406 ksmbd_debug(SMB, "session setup request for user %s\n", name);
1407 user = ksmbd_login_user(name);
1412 static int ntlm_authenticate(struct ksmbd_work *work)
1414 struct smb2_sess_setup_req *req = smb2_get_msg(work->request_buf);
1415 struct smb2_sess_setup_rsp *rsp = smb2_get_msg(work->response_buf);
1416 struct ksmbd_conn *conn = work->conn;
1417 struct ksmbd_session *sess = work->sess;
1418 struct channel *chann = NULL;
1419 struct ksmbd_user *user;
1423 ksmbd_debug(SMB, "authenticate phase\n");
1424 if (conn->use_spnego) {
1425 unsigned char *spnego_blob;
1426 u16 spnego_blob_len;
1428 rc = build_spnego_ntlmssp_auth_blob(&spnego_blob,
1434 sz = le16_to_cpu(rsp->SecurityBufferOffset);
1435 memcpy((char *)&rsp->hdr.ProtocolId + sz, spnego_blob, spnego_blob_len);
1436 rsp->SecurityBufferLength = cpu_to_le16(spnego_blob_len);
1438 inc_rfc1001_len(work->response_buf, spnego_blob_len - 1);
1441 user = session_user(conn, req);
1443 ksmbd_debug(SMB, "Unknown user name or an error\n");
1447 /* Check for previous session */
1448 prev_id = le64_to_cpu(req->PreviousSessionId);
1449 if (prev_id && prev_id != sess->id)
1450 destroy_previous_session(conn, user, prev_id);
1452 if (sess->state == SMB2_SESSION_VALID) {
1454 * Reuse session if anonymous try to connect
1455 * on reauthetication.
1457 if (ksmbd_anonymous_user(user)) {
1458 ksmbd_free_user(user);
1462 if (!ksmbd_compare_user(sess->user, user)) {
1463 ksmbd_free_user(user);
1466 ksmbd_free_user(user);
1471 if (user_guest(sess->user)) {
1472 rsp->SessionFlags = SMB2_SESSION_FLAG_IS_GUEST_LE;
1474 struct authenticate_message *authblob;
1476 authblob = user_authblob(conn, req);
1477 sz = le16_to_cpu(req->SecurityBufferLength);
1478 rc = ksmbd_decode_ntlmssp_auth_blob(authblob, sz, conn, sess);
1480 set_user_flag(sess->user, KSMBD_USER_FLAG_BAD_PASSWORD);
1481 ksmbd_debug(SMB, "authentication failed\n");
1487 * If session state is SMB2_SESSION_VALID, We can assume
1488 * that it is reauthentication. And the user/password
1489 * has been verified, so return it here.
1491 if (sess->state == SMB2_SESSION_VALID) {
1493 goto binding_session;
1497 if ((rsp->SessionFlags != SMB2_SESSION_FLAG_IS_GUEST_LE &&
1498 (conn->sign || server_conf.enforced_signing)) ||
1499 (req->SecurityMode & SMB2_NEGOTIATE_SIGNING_REQUIRED))
1502 if (smb3_encryption_negotiated(conn) &&
1503 !(req->Flags & SMB2_SESSION_REQ_FLAG_BINDING)) {
1504 rc = conn->ops->generate_encryptionkey(conn, sess);
1507 "SMB3 encryption key generation failed\n");
1511 rsp->SessionFlags = SMB2_SESSION_FLAG_ENCRYPT_DATA_LE;
1513 * signing is disable if encryption is enable
1520 if (conn->dialect >= SMB30_PROT_ID) {
1521 read_lock(&sess->chann_lock);
1522 chann = lookup_chann_list(sess, conn);
1523 read_unlock(&sess->chann_lock);
1525 chann = kmalloc(sizeof(struct channel), GFP_KERNEL);
1530 INIT_LIST_HEAD(&chann->chann_list);
1531 write_lock(&sess->chann_lock);
1532 list_add(&chann->chann_list, &sess->ksmbd_chann_list);
1533 write_unlock(&sess->chann_lock);
1537 if (conn->ops->generate_signingkey) {
1538 rc = conn->ops->generate_signingkey(sess, conn);
1540 ksmbd_debug(SMB, "SMB3 signing key generation failed\n");
1545 if (!ksmbd_conn_lookup_dialect(conn)) {
1546 pr_err("fail to verify the dialect\n");
1552 #ifdef CONFIG_SMB_SERVER_KERBEROS5
1553 static int krb5_authenticate(struct ksmbd_work *work)
1555 struct smb2_sess_setup_req *req = smb2_get_msg(work->request_buf);
1556 struct smb2_sess_setup_rsp *rsp = smb2_get_msg(work->response_buf);
1557 struct ksmbd_conn *conn = work->conn;
1558 struct ksmbd_session *sess = work->sess;
1559 char *in_blob, *out_blob;
1560 struct channel *chann = NULL;
1562 int in_len, out_len;
1565 in_blob = (char *)&req->hdr.ProtocolId +
1566 le16_to_cpu(req->SecurityBufferOffset);
1567 in_len = le16_to_cpu(req->SecurityBufferLength);
1568 out_blob = (char *)&rsp->hdr.ProtocolId +
1569 le16_to_cpu(rsp->SecurityBufferOffset);
1570 out_len = work->response_sz -
1571 (le16_to_cpu(rsp->SecurityBufferOffset) + 4);
1573 /* Check previous session */
1574 prev_sess_id = le64_to_cpu(req->PreviousSessionId);
1575 if (prev_sess_id && prev_sess_id != sess->id)
1576 destroy_previous_session(conn, sess->user, prev_sess_id);
1578 if (sess->state == SMB2_SESSION_VALID)
1579 ksmbd_free_user(sess->user);
1581 retval = ksmbd_krb5_authenticate(sess, in_blob, in_len,
1582 out_blob, &out_len);
1584 ksmbd_debug(SMB, "krb5 authentication failed\n");
1587 rsp->SecurityBufferLength = cpu_to_le16(out_len);
1588 inc_rfc1001_len(work->response_buf, out_len - 1);
1590 if ((conn->sign || server_conf.enforced_signing) ||
1591 (req->SecurityMode & SMB2_NEGOTIATE_SIGNING_REQUIRED))
1594 if (smb3_encryption_negotiated(conn)) {
1595 retval = conn->ops->generate_encryptionkey(conn, sess);
1598 "SMB3 encryption key generation failed\n");
1602 rsp->SessionFlags = SMB2_SESSION_FLAG_ENCRYPT_DATA_LE;
1606 if (conn->dialect >= SMB30_PROT_ID) {
1607 read_lock(&sess->chann_lock);
1608 chann = lookup_chann_list(sess, conn);
1609 read_unlock(&sess->chann_lock);
1611 chann = kmalloc(sizeof(struct channel), GFP_KERNEL);
1616 INIT_LIST_HEAD(&chann->chann_list);
1617 write_lock(&sess->chann_lock);
1618 list_add(&chann->chann_list, &sess->ksmbd_chann_list);
1619 write_unlock(&sess->chann_lock);
1623 if (conn->ops->generate_signingkey) {
1624 retval = conn->ops->generate_signingkey(sess, conn);
1626 ksmbd_debug(SMB, "SMB3 signing key generation failed\n");
1631 if (!ksmbd_conn_lookup_dialect(conn)) {
1632 pr_err("fail to verify the dialect\n");
1638 static int krb5_authenticate(struct ksmbd_work *work)
1644 int smb2_sess_setup(struct ksmbd_work *work)
1646 struct ksmbd_conn *conn = work->conn;
1647 struct smb2_sess_setup_req *req = smb2_get_msg(work->request_buf);
1648 struct smb2_sess_setup_rsp *rsp = smb2_get_msg(work->response_buf);
1649 struct ksmbd_session *sess;
1650 struct negotiate_message *negblob;
1651 unsigned int negblob_len, negblob_off;
1654 ksmbd_debug(SMB, "Received request for session setup\n");
1656 rsp->StructureSize = cpu_to_le16(9);
1657 rsp->SessionFlags = 0;
1658 rsp->SecurityBufferOffset = cpu_to_le16(72);
1659 rsp->SecurityBufferLength = 0;
1660 inc_rfc1001_len(work->response_buf, 9);
1662 if (!req->hdr.SessionId) {
1663 sess = ksmbd_smb2_session_create();
1668 rsp->hdr.SessionId = cpu_to_le64(sess->id);
1669 rc = ksmbd_session_register(conn, sess);
1672 } else if (conn->dialect >= SMB30_PROT_ID &&
1673 (server_conf.flags & KSMBD_GLOBAL_FLAG_SMB3_MULTICHANNEL) &&
1674 req->Flags & SMB2_SESSION_REQ_FLAG_BINDING) {
1675 u64 sess_id = le64_to_cpu(req->hdr.SessionId);
1677 sess = ksmbd_session_lookup_slowpath(sess_id);
1683 if (conn->dialect != sess->dialect) {
1688 if (!(req->hdr.Flags & SMB2_FLAGS_SIGNED)) {
1693 if (strncmp(conn->ClientGUID, sess->ClientGUID,
1694 SMB2_CLIENT_GUID_SIZE)) {
1699 if (sess->state == SMB2_SESSION_IN_PROGRESS) {
1704 if (sess->state == SMB2_SESSION_EXPIRED) {
1709 if (ksmbd_session_lookup(conn, sess_id)) {
1714 conn->binding = true;
1715 } else if ((conn->dialect < SMB30_PROT_ID ||
1716 server_conf.flags & KSMBD_GLOBAL_FLAG_SMB3_MULTICHANNEL) &&
1717 (req->Flags & SMB2_SESSION_REQ_FLAG_BINDING)) {
1722 sess = ksmbd_session_lookup(conn,
1723 le64_to_cpu(req->hdr.SessionId));
1731 if (sess->state == SMB2_SESSION_EXPIRED)
1732 sess->state = SMB2_SESSION_IN_PROGRESS;
1734 negblob_off = le16_to_cpu(req->SecurityBufferOffset);
1735 negblob_len = le16_to_cpu(req->SecurityBufferLength);
1736 if (negblob_off < offsetof(struct smb2_sess_setup_req, Buffer) ||
1737 negblob_len < offsetof(struct negotiate_message, NegotiateFlags)) {
1742 negblob = (struct negotiate_message *)((char *)&req->hdr.ProtocolId +
1745 if (decode_negotiation_token(conn, negblob, negblob_len) == 0) {
1746 if (conn->mechToken)
1747 negblob = (struct negotiate_message *)conn->mechToken;
1750 if (server_conf.auth_mechs & conn->auth_mechs) {
1751 rc = generate_preauth_hash(work);
1755 if (conn->preferred_auth_mech &
1756 (KSMBD_AUTH_KRB5 | KSMBD_AUTH_MSKRB5)) {
1757 rc = krb5_authenticate(work);
1763 ksmbd_conn_set_good(work);
1764 sess->state = SMB2_SESSION_VALID;
1765 kfree(sess->Preauth_HashValue);
1766 sess->Preauth_HashValue = NULL;
1767 } else if (conn->preferred_auth_mech == KSMBD_AUTH_NTLMSSP) {
1768 if (negblob->MessageType == NtLmNegotiate) {
1769 rc = ntlm_negotiate(work, negblob, negblob_len);
1773 STATUS_MORE_PROCESSING_REQUIRED;
1775 * Note: here total size -1 is done as an
1776 * adjustment for 0 size blob
1778 inc_rfc1001_len(work->response_buf,
1779 le16_to_cpu(rsp->SecurityBufferLength) - 1);
1781 } else if (negblob->MessageType == NtLmAuthenticate) {
1782 rc = ntlm_authenticate(work);
1786 ksmbd_conn_set_good(work);
1787 sess->state = SMB2_SESSION_VALID;
1788 if (conn->binding) {
1789 struct preauth_session *preauth_sess;
1792 ksmbd_preauth_session_lookup(conn, sess->id);
1794 list_del(&preauth_sess->preauth_entry);
1795 kfree(preauth_sess);
1798 kfree(sess->Preauth_HashValue);
1799 sess->Preauth_HashValue = NULL;
1802 /* TODO: need one more negotiation */
1803 pr_err("Not support the preferred authentication\n");
1807 pr_err("Not support authentication\n");
1813 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
1814 else if (rc == -ENOENT)
1815 rsp->hdr.Status = STATUS_USER_SESSION_DELETED;
1816 else if (rc == -EACCES)
1817 rsp->hdr.Status = STATUS_REQUEST_NOT_ACCEPTED;
1818 else if (rc == -EFAULT)
1819 rsp->hdr.Status = STATUS_NETWORK_SESSION_EXPIRED;
1820 else if (rc == -ENOMEM)
1821 rsp->hdr.Status = STATUS_INSUFFICIENT_RESOURCES;
1823 rsp->hdr.Status = STATUS_LOGON_FAILURE;
1825 if (conn->use_spnego && conn->mechToken) {
1826 kfree(conn->mechToken);
1827 conn->mechToken = NULL;
1832 * SecurityBufferOffset should be set to zero
1833 * in session setup error response.
1835 rsp->SecurityBufferOffset = 0;
1838 bool try_delay = false;
1841 * To avoid dictionary attacks (repeated session setups rapidly sent) to
1842 * connect to server, ksmbd make a delay of a 5 seconds on session setup
1843 * failure to make it harder to send enough random connection requests
1844 * to break into a server.
1846 if (sess->user && sess->user->flags & KSMBD_USER_FLAG_DELAY_SESSION)
1849 xa_erase(&conn->sessions, sess->id);
1850 ksmbd_session_destroy(sess);
1861 * smb2_tree_connect() - handler for smb2 tree connect command
1862 * @work: smb work containing smb request buffer
1864 * Return: 0 on success, otherwise error
1866 int smb2_tree_connect(struct ksmbd_work *work)
1868 struct ksmbd_conn *conn = work->conn;
1869 struct smb2_tree_connect_req *req = smb2_get_msg(work->request_buf);
1870 struct smb2_tree_connect_rsp *rsp = smb2_get_msg(work->response_buf);
1871 struct ksmbd_session *sess = work->sess;
1872 char *treename = NULL, *name = NULL;
1873 struct ksmbd_tree_conn_status status;
1874 struct ksmbd_share_config *share;
1877 treename = smb_strndup_from_utf16(req->Buffer,
1878 le16_to_cpu(req->PathLength), true,
1880 if (IS_ERR(treename)) {
1881 pr_err("treename is NULL\n");
1882 status.ret = KSMBD_TREE_CONN_STATUS_ERROR;
1886 name = ksmbd_extract_sharename(treename);
1888 status.ret = KSMBD_TREE_CONN_STATUS_ERROR;
1892 ksmbd_debug(SMB, "tree connect request for tree %s treename %s\n",
1895 status = ksmbd_tree_conn_connect(conn, sess, name);
1896 if (status.ret == KSMBD_TREE_CONN_STATUS_OK)
1897 rsp->hdr.Id.SyncId.TreeId = cpu_to_le32(status.tree_conn->id);
1901 share = status.tree_conn->share_conf;
1902 if (test_share_config_flag(share, KSMBD_SHARE_FLAG_PIPE)) {
1903 ksmbd_debug(SMB, "IPC share path request\n");
1904 rsp->ShareType = SMB2_SHARE_TYPE_PIPE;
1905 rsp->MaximalAccess = FILE_READ_DATA_LE | FILE_READ_EA_LE |
1906 FILE_EXECUTE_LE | FILE_READ_ATTRIBUTES_LE |
1907 FILE_DELETE_LE | FILE_READ_CONTROL_LE |
1908 FILE_WRITE_DAC_LE | FILE_WRITE_OWNER_LE |
1909 FILE_SYNCHRONIZE_LE;
1911 rsp->ShareType = SMB2_SHARE_TYPE_DISK;
1912 rsp->MaximalAccess = FILE_READ_DATA_LE | FILE_READ_EA_LE |
1913 FILE_EXECUTE_LE | FILE_READ_ATTRIBUTES_LE;
1914 if (test_tree_conn_flag(status.tree_conn,
1915 KSMBD_TREE_CONN_FLAG_WRITABLE)) {
1916 rsp->MaximalAccess |= FILE_WRITE_DATA_LE |
1917 FILE_APPEND_DATA_LE | FILE_WRITE_EA_LE |
1918 FILE_DELETE_LE | FILE_WRITE_ATTRIBUTES_LE |
1919 FILE_DELETE_CHILD_LE | FILE_READ_CONTROL_LE |
1920 FILE_WRITE_DAC_LE | FILE_WRITE_OWNER_LE |
1921 FILE_SYNCHRONIZE_LE;
1925 status.tree_conn->maximal_access = le32_to_cpu(rsp->MaximalAccess);
1926 if (conn->posix_ext_supported)
1927 status.tree_conn->posix_extensions = true;
1930 rsp->StructureSize = cpu_to_le16(16);
1931 rsp->Capabilities = 0;
1933 /* default manual caching */
1934 rsp->ShareFlags = SMB2_SHAREFLAG_MANUAL_CACHING;
1935 inc_rfc1001_len(work->response_buf, 16);
1937 if (!IS_ERR(treename))
1942 switch (status.ret) {
1943 case KSMBD_TREE_CONN_STATUS_OK:
1944 rsp->hdr.Status = STATUS_SUCCESS;
1949 case KSMBD_TREE_CONN_STATUS_NO_SHARE:
1950 rsp->hdr.Status = STATUS_BAD_NETWORK_NAME;
1953 case KSMBD_TREE_CONN_STATUS_NOMEM:
1954 rsp->hdr.Status = STATUS_NO_MEMORY;
1956 case KSMBD_TREE_CONN_STATUS_ERROR:
1957 case KSMBD_TREE_CONN_STATUS_TOO_MANY_CONNS:
1958 case KSMBD_TREE_CONN_STATUS_TOO_MANY_SESSIONS:
1959 rsp->hdr.Status = STATUS_ACCESS_DENIED;
1962 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
1965 rsp->hdr.Status = STATUS_ACCESS_DENIED;
1972 * smb2_create_open_flags() - convert smb open flags to unix open flags
1973 * @file_present: is file already present
1974 * @access: file access flags
1975 * @disposition: file disposition flags
1976 * @may_flags: set with MAY_ flags
1978 * Return: file open flags
1980 static int smb2_create_open_flags(bool file_present, __le32 access,
1984 int oflags = O_NONBLOCK | O_LARGEFILE;
1986 if (access & FILE_READ_DESIRED_ACCESS_LE &&
1987 access & FILE_WRITE_DESIRE_ACCESS_LE) {
1989 *may_flags = MAY_OPEN | MAY_READ | MAY_WRITE;
1990 } else if (access & FILE_WRITE_DESIRE_ACCESS_LE) {
1992 *may_flags = MAY_OPEN | MAY_WRITE;
1995 *may_flags = MAY_OPEN | MAY_READ;
1998 if (access == FILE_READ_ATTRIBUTES_LE)
2002 switch (disposition & FILE_CREATE_MASK_LE) {
2004 case FILE_CREATE_LE:
2006 case FILE_SUPERSEDE_LE:
2007 case FILE_OVERWRITE_LE:
2008 case FILE_OVERWRITE_IF_LE:
2015 switch (disposition & FILE_CREATE_MASK_LE) {
2016 case FILE_SUPERSEDE_LE:
2017 case FILE_CREATE_LE:
2018 case FILE_OPEN_IF_LE:
2019 case FILE_OVERWRITE_IF_LE:
2023 case FILE_OVERWRITE_LE:
2035 * smb2_tree_disconnect() - handler for smb tree connect request
2036 * @work: smb work containing request buffer
2040 int smb2_tree_disconnect(struct ksmbd_work *work)
2042 struct smb2_tree_disconnect_rsp *rsp = smb2_get_msg(work->response_buf);
2043 struct ksmbd_session *sess = work->sess;
2044 struct ksmbd_tree_connect *tcon = work->tcon;
2046 rsp->StructureSize = cpu_to_le16(4);
2047 inc_rfc1001_len(work->response_buf, 4);
2049 ksmbd_debug(SMB, "request\n");
2052 struct smb2_tree_disconnect_req *req =
2053 smb2_get_msg(work->request_buf);
2055 ksmbd_debug(SMB, "Invalid tid %d\n", req->hdr.Id.SyncId.TreeId);
2056 rsp->hdr.Status = STATUS_NETWORK_NAME_DELETED;
2057 smb2_set_err_rsp(work);
2061 ksmbd_close_tree_conn_fds(work);
2062 ksmbd_tree_conn_disconnect(sess, tcon);
2068 * smb2_session_logoff() - handler for session log off request
2069 * @work: smb work containing request buffer
2073 int smb2_session_logoff(struct ksmbd_work *work)
2075 struct ksmbd_conn *conn = work->conn;
2076 struct smb2_logoff_rsp *rsp = smb2_get_msg(work->response_buf);
2077 struct ksmbd_session *sess = work->sess;
2079 rsp->StructureSize = cpu_to_le16(4);
2080 inc_rfc1001_len(work->response_buf, 4);
2082 ksmbd_debug(SMB, "request\n");
2084 /* setting CifsExiting here may race with start_tcp_sess */
2085 ksmbd_conn_set_need_reconnect(work);
2086 ksmbd_close_session_fds(work);
2087 ksmbd_conn_wait_idle(conn);
2089 if (ksmbd_tree_conn_session_logoff(sess)) {
2090 struct smb2_logoff_req *req = smb2_get_msg(work->request_buf);
2092 ksmbd_debug(SMB, "Invalid tid %d\n", req->hdr.Id.SyncId.TreeId);
2093 rsp->hdr.Status = STATUS_NETWORK_NAME_DELETED;
2094 smb2_set_err_rsp(work);
2098 ksmbd_destroy_file_table(&sess->file_table);
2099 sess->state = SMB2_SESSION_EXPIRED;
2101 ksmbd_free_user(sess->user);
2104 /* let start_tcp_sess free connection info now */
2105 ksmbd_conn_set_need_negotiate(work);
2110 * create_smb2_pipe() - create IPC pipe
2111 * @work: smb work containing request buffer
2113 * Return: 0 on success, otherwise error
2115 static noinline int create_smb2_pipe(struct ksmbd_work *work)
2117 struct smb2_create_rsp *rsp = smb2_get_msg(work->response_buf);
2118 struct smb2_create_req *req = smb2_get_msg(work->request_buf);
2123 name = smb_strndup_from_utf16(req->Buffer, le16_to_cpu(req->NameLength),
2124 1, work->conn->local_nls);
2126 rsp->hdr.Status = STATUS_NO_MEMORY;
2127 err = PTR_ERR(name);
2131 id = ksmbd_session_rpc_open(work->sess, name);
2133 pr_err("Unable to open RPC pipe: %d\n", id);
2138 rsp->hdr.Status = STATUS_SUCCESS;
2139 rsp->StructureSize = cpu_to_le16(89);
2140 rsp->OplockLevel = SMB2_OPLOCK_LEVEL_NONE;
2142 rsp->CreateAction = cpu_to_le32(FILE_OPENED);
2144 rsp->CreationTime = cpu_to_le64(0);
2145 rsp->LastAccessTime = cpu_to_le64(0);
2146 rsp->ChangeTime = cpu_to_le64(0);
2147 rsp->AllocationSize = cpu_to_le64(0);
2148 rsp->EndofFile = cpu_to_le64(0);
2149 rsp->FileAttributes = FILE_ATTRIBUTE_NORMAL_LE;
2151 rsp->VolatileFileId = id;
2152 rsp->PersistentFileId = 0;
2153 rsp->CreateContextsOffset = 0;
2154 rsp->CreateContextsLength = 0;
2156 inc_rfc1001_len(work->response_buf, 88); /* StructureSize - 1*/
2163 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
2167 rsp->hdr.Status = STATUS_NO_MEMORY;
2174 smb2_set_err_rsp(work);
2179 * smb2_set_ea() - handler for setting extended attributes using set
2181 * @eabuf: set info command buffer
2182 * @buf_len: set info command buffer length
2183 * @path: dentry path for get ea
2185 * Return: 0 on success, otherwise error
2187 static int smb2_set_ea(struct smb2_ea_info *eabuf, unsigned int buf_len,
2190 struct user_namespace *user_ns = mnt_user_ns(path->mnt);
2191 char *attr_name = NULL, *value;
2193 unsigned int next = 0;
2195 if (buf_len < sizeof(struct smb2_ea_info) + eabuf->EaNameLength +
2196 le16_to_cpu(eabuf->EaValueLength))
2199 attr_name = kmalloc(XATTR_NAME_MAX + 1, GFP_KERNEL);
2204 if (!eabuf->EaNameLength)
2208 "name : <%s>, name_len : %u, value_len : %u, next : %u\n",
2209 eabuf->name, eabuf->EaNameLength,
2210 le16_to_cpu(eabuf->EaValueLength),
2211 le32_to_cpu(eabuf->NextEntryOffset));
2213 if (eabuf->EaNameLength >
2214 (XATTR_NAME_MAX - XATTR_USER_PREFIX_LEN)) {
2219 memcpy(attr_name, XATTR_USER_PREFIX, XATTR_USER_PREFIX_LEN);
2220 memcpy(&attr_name[XATTR_USER_PREFIX_LEN], eabuf->name,
2221 eabuf->EaNameLength);
2222 attr_name[XATTR_USER_PREFIX_LEN + eabuf->EaNameLength] = '\0';
2223 value = (char *)&eabuf->name + eabuf->EaNameLength + 1;
2225 if (!eabuf->EaValueLength) {
2226 rc = ksmbd_vfs_casexattr_len(user_ns,
2229 XATTR_USER_PREFIX_LEN +
2230 eabuf->EaNameLength);
2232 /* delete the EA only when it exits */
2234 rc = ksmbd_vfs_remove_xattr(user_ns,
2240 "remove xattr failed(%d)\n",
2246 /* if the EA doesn't exist, just do nothing. */
2249 rc = ksmbd_vfs_setxattr(user_ns,
2250 path->dentry, attr_name, value,
2251 le16_to_cpu(eabuf->EaValueLength), 0);
2254 "ksmbd_vfs_setxattr is failed(%d)\n",
2261 next = le32_to_cpu(eabuf->NextEntryOffset);
2262 if (next == 0 || buf_len < next)
2265 eabuf = (struct smb2_ea_info *)((char *)eabuf + next);
2266 if (next < (u32)eabuf->EaNameLength + le16_to_cpu(eabuf->EaValueLength))
2269 } while (next != 0);
2275 static noinline int smb2_set_stream_name_xattr(struct path *path,
2276 struct ksmbd_file *fp,
2277 char *stream_name, int s_type)
2279 struct user_namespace *user_ns = mnt_user_ns(path->mnt);
2280 size_t xattr_stream_size;
2281 char *xattr_stream_name;
2284 rc = ksmbd_vfs_xattr_stream_name(stream_name,
2291 fp->stream.name = xattr_stream_name;
2292 fp->stream.size = xattr_stream_size;
2294 /* Check if there is stream prefix in xattr space */
2295 rc = ksmbd_vfs_casexattr_len(user_ns,
2302 if (fp->cdoption == FILE_OPEN_LE) {
2303 ksmbd_debug(SMB, "XATTR stream name lookup failed: %d\n", rc);
2307 rc = ksmbd_vfs_setxattr(user_ns, path->dentry,
2308 xattr_stream_name, NULL, 0, 0);
2310 pr_err("Failed to store XATTR stream name :%d\n", rc);
2314 static int smb2_remove_smb_xattrs(struct path *path)
2316 struct user_namespace *user_ns = mnt_user_ns(path->mnt);
2317 char *name, *xattr_list = NULL;
2318 ssize_t xattr_list_len;
2321 xattr_list_len = ksmbd_vfs_listxattr(path->dentry, &xattr_list);
2322 if (xattr_list_len < 0) {
2324 } else if (!xattr_list_len) {
2325 ksmbd_debug(SMB, "empty xattr in the file\n");
2329 for (name = xattr_list; name - xattr_list < xattr_list_len;
2330 name += strlen(name) + 1) {
2331 ksmbd_debug(SMB, "%s, len %zd\n", name, strlen(name));
2333 if (!strncmp(name, XATTR_USER_PREFIX, XATTR_USER_PREFIX_LEN) &&
2334 !strncmp(&name[XATTR_USER_PREFIX_LEN], STREAM_PREFIX,
2335 STREAM_PREFIX_LEN)) {
2336 err = ksmbd_vfs_remove_xattr(user_ns, path->dentry,
2339 ksmbd_debug(SMB, "remove xattr failed : %s\n",
2348 static int smb2_create_truncate(struct path *path)
2350 int rc = vfs_truncate(path, 0);
2353 pr_err("vfs_truncate failed, rc %d\n", rc);
2357 rc = smb2_remove_smb_xattrs(path);
2358 if (rc == -EOPNOTSUPP)
2362 "ksmbd_truncate_stream_name_xattr failed, rc %d\n",
2367 static void smb2_new_xattrs(struct ksmbd_tree_connect *tcon, struct path *path,
2368 struct ksmbd_file *fp)
2370 struct xattr_dos_attrib da = {0};
2373 if (!test_share_config_flag(tcon->share_conf,
2374 KSMBD_SHARE_FLAG_STORE_DOS_ATTRS))
2378 da.attr = le32_to_cpu(fp->f_ci->m_fattr);
2379 da.itime = da.create_time = fp->create_time;
2380 da.flags = XATTR_DOSINFO_ATTRIB | XATTR_DOSINFO_CREATE_TIME |
2381 XATTR_DOSINFO_ITIME;
2383 rc = ksmbd_vfs_set_dos_attrib_xattr(mnt_user_ns(path->mnt),
2386 ksmbd_debug(SMB, "failed to store file attribute into xattr\n");
2389 static void smb2_update_xattrs(struct ksmbd_tree_connect *tcon,
2390 struct path *path, struct ksmbd_file *fp)
2392 struct xattr_dos_attrib da;
2395 fp->f_ci->m_fattr &= ~(FILE_ATTRIBUTE_HIDDEN_LE | FILE_ATTRIBUTE_SYSTEM_LE);
2397 /* get FileAttributes from XATTR_NAME_DOS_ATTRIBUTE */
2398 if (!test_share_config_flag(tcon->share_conf,
2399 KSMBD_SHARE_FLAG_STORE_DOS_ATTRS))
2402 rc = ksmbd_vfs_get_dos_attrib_xattr(mnt_user_ns(path->mnt),
2405 fp->f_ci->m_fattr = cpu_to_le32(da.attr);
2406 fp->create_time = da.create_time;
2407 fp->itime = da.itime;
2411 static int smb2_creat(struct ksmbd_work *work, struct path *path, char *name,
2412 int open_flags, umode_t posix_mode, bool is_dir)
2414 struct ksmbd_tree_connect *tcon = work->tcon;
2415 struct ksmbd_share_config *share = tcon->share_conf;
2419 if (!(open_flags & O_CREAT))
2422 ksmbd_debug(SMB, "file does not exist, so creating\n");
2423 if (is_dir == true) {
2424 ksmbd_debug(SMB, "creating directory\n");
2426 mode = share_config_directory_mode(share, posix_mode);
2427 rc = ksmbd_vfs_mkdir(work, name, mode);
2431 ksmbd_debug(SMB, "creating regular file\n");
2433 mode = share_config_create_mode(share, posix_mode);
2434 rc = ksmbd_vfs_create(work, name, mode);
2439 rc = ksmbd_vfs_kern_path(work, name, 0, path, 0);
2441 pr_err("cannot get linux path (%s), err = %d\n",
2448 static int smb2_create_sd_buffer(struct ksmbd_work *work,
2449 struct smb2_create_req *req,
2452 struct create_context *context;
2453 struct create_sd_buf_req *sd_buf;
2455 if (!req->CreateContextsOffset)
2458 /* Parse SD BUFFER create contexts */
2459 context = smb2_find_context_vals(req, SMB2_CREATE_SD_BUFFER);
2462 else if (IS_ERR(context))
2463 return PTR_ERR(context);
2466 "Set ACLs using SMB2_CREATE_SD_BUFFER context\n");
2467 sd_buf = (struct create_sd_buf_req *)context;
2468 if (le16_to_cpu(context->DataOffset) +
2469 le32_to_cpu(context->DataLength) <
2470 sizeof(struct create_sd_buf_req))
2472 return set_info_sec(work->conn, work->tcon, path, &sd_buf->ntsd,
2473 le32_to_cpu(sd_buf->ccontext.DataLength), true);
2476 static void ksmbd_acls_fattr(struct smb_fattr *fattr,
2477 struct user_namespace *mnt_userns,
2478 struct inode *inode)
2480 fattr->cf_uid = i_uid_into_mnt(mnt_userns, inode);
2481 fattr->cf_gid = i_gid_into_mnt(mnt_userns, inode);
2482 fattr->cf_mode = inode->i_mode;
2483 fattr->cf_acls = NULL;
2484 fattr->cf_dacls = NULL;
2486 if (IS_ENABLED(CONFIG_FS_POSIX_ACL)) {
2487 fattr->cf_acls = get_acl(inode, ACL_TYPE_ACCESS);
2488 if (S_ISDIR(inode->i_mode))
2489 fattr->cf_dacls = get_acl(inode, ACL_TYPE_DEFAULT);
2494 * smb2_open() - handler for smb file open request
2495 * @work: smb work containing request buffer
2497 * Return: 0 on success, otherwise error
2499 int smb2_open(struct ksmbd_work *work)
2501 struct ksmbd_conn *conn = work->conn;
2502 struct ksmbd_session *sess = work->sess;
2503 struct ksmbd_tree_connect *tcon = work->tcon;
2504 struct smb2_create_req *req;
2505 struct smb2_create_rsp *rsp;
2507 struct ksmbd_share_config *share = tcon->share_conf;
2508 struct ksmbd_file *fp = NULL;
2509 struct file *filp = NULL;
2510 struct user_namespace *user_ns = NULL;
2512 struct create_context *context;
2513 struct lease_ctx_info *lc = NULL;
2514 struct create_ea_buf_req *ea_buf = NULL;
2515 struct oplock_info *opinfo;
2516 __le32 *next_ptr = NULL;
2517 int req_op_level = 0, open_flags = 0, may_flags = 0, file_info = 0;
2519 int contxt_cnt = 0, query_disk_id = 0;
2520 int maximal_access_ctxt = 0, posix_ctxt = 0;
2524 char *stream_name = NULL;
2525 bool file_present = false, created = false, already_permitted = false;
2526 int share_ret, need_truncate = 0;
2528 umode_t posix_mode = 0;
2529 __le32 daccess, maximal_access = 0;
2531 WORK_BUFFERS(work, req, rsp);
2533 if (req->hdr.NextCommand && !work->next_smb2_rcv_hdr_off &&
2534 (req->hdr.Flags & SMB2_FLAGS_RELATED_OPERATIONS)) {
2535 ksmbd_debug(SMB, "invalid flag in chained command\n");
2536 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
2537 smb2_set_err_rsp(work);
2541 if (test_share_config_flag(share, KSMBD_SHARE_FLAG_PIPE)) {
2542 ksmbd_debug(SMB, "IPC pipe create request\n");
2543 return create_smb2_pipe(work);
2546 if (req->NameLength) {
2547 if ((req->CreateOptions & FILE_DIRECTORY_FILE_LE) &&
2548 *(char *)req->Buffer == '\\') {
2549 pr_err("not allow directory name included leading slash\n");
2554 name = smb2_get_name(req->Buffer,
2555 le16_to_cpu(req->NameLength),
2556 work->conn->local_nls);
2565 ksmbd_debug(SMB, "converted name = %s\n", name);
2566 if (strchr(name, ':')) {
2567 if (!test_share_config_flag(work->tcon->share_conf,
2568 KSMBD_SHARE_FLAG_STREAMS)) {
2572 rc = parse_stream_name(name, &stream_name, &s_type);
2577 rc = ksmbd_validate_filename(name);
2581 if (ksmbd_share_veto_filename(share, name)) {
2583 ksmbd_debug(SMB, "Reject open(), vetoed file: %s\n",
2588 name = kstrdup("", GFP_KERNEL);
2595 req_op_level = req->RequestedOplockLevel;
2596 if (req_op_level == SMB2_OPLOCK_LEVEL_LEASE)
2597 lc = parse_lease_state(req);
2599 if (le32_to_cpu(req->ImpersonationLevel) > le32_to_cpu(IL_DELEGATE)) {
2600 pr_err("Invalid impersonationlevel : 0x%x\n",
2601 le32_to_cpu(req->ImpersonationLevel));
2603 rsp->hdr.Status = STATUS_BAD_IMPERSONATION_LEVEL;
2607 if (req->CreateOptions && !(req->CreateOptions & CREATE_OPTIONS_MASK_LE)) {
2608 pr_err("Invalid create options : 0x%x\n",
2609 le32_to_cpu(req->CreateOptions));
2613 if (req->CreateOptions & FILE_SEQUENTIAL_ONLY_LE &&
2614 req->CreateOptions & FILE_RANDOM_ACCESS_LE)
2615 req->CreateOptions = ~(FILE_SEQUENTIAL_ONLY_LE);
2617 if (req->CreateOptions &
2618 (FILE_OPEN_BY_FILE_ID_LE | CREATE_TREE_CONNECTION |
2619 FILE_RESERVE_OPFILTER_LE)) {
2624 if (req->CreateOptions & FILE_DIRECTORY_FILE_LE) {
2625 if (req->CreateOptions & FILE_NON_DIRECTORY_FILE_LE) {
2628 } else if (req->CreateOptions & FILE_NO_COMPRESSION_LE) {
2629 req->CreateOptions = ~(FILE_NO_COMPRESSION_LE);
2634 if (le32_to_cpu(req->CreateDisposition) >
2635 le32_to_cpu(FILE_OVERWRITE_IF_LE)) {
2636 pr_err("Invalid create disposition : 0x%x\n",
2637 le32_to_cpu(req->CreateDisposition));
2642 if (!(req->DesiredAccess & DESIRED_ACCESS_MASK)) {
2643 pr_err("Invalid desired access : 0x%x\n",
2644 le32_to_cpu(req->DesiredAccess));
2649 if (req->FileAttributes && !(req->FileAttributes & FILE_ATTRIBUTE_MASK_LE)) {
2650 pr_err("Invalid file attribute : 0x%x\n",
2651 le32_to_cpu(req->FileAttributes));
2656 if (req->CreateContextsOffset) {
2657 /* Parse non-durable handle create contexts */
2658 context = smb2_find_context_vals(req, SMB2_CREATE_EA_BUFFER);
2659 if (IS_ERR(context)) {
2660 rc = PTR_ERR(context);
2662 } else if (context) {
2663 ea_buf = (struct create_ea_buf_req *)context;
2664 if (le16_to_cpu(context->DataOffset) +
2665 le32_to_cpu(context->DataLength) <
2666 sizeof(struct create_ea_buf_req)) {
2670 if (req->CreateOptions & FILE_NO_EA_KNOWLEDGE_LE) {
2671 rsp->hdr.Status = STATUS_ACCESS_DENIED;
2677 context = smb2_find_context_vals(req,
2678 SMB2_CREATE_QUERY_MAXIMAL_ACCESS_REQUEST);
2679 if (IS_ERR(context)) {
2680 rc = PTR_ERR(context);
2682 } else if (context) {
2684 "get query maximal access context\n");
2685 maximal_access_ctxt = 1;
2688 context = smb2_find_context_vals(req,
2689 SMB2_CREATE_TIMEWARP_REQUEST);
2690 if (IS_ERR(context)) {
2691 rc = PTR_ERR(context);
2693 } else if (context) {
2694 ksmbd_debug(SMB, "get timewarp context\n");
2699 if (tcon->posix_extensions) {
2700 context = smb2_find_context_vals(req,
2701 SMB2_CREATE_TAG_POSIX);
2702 if (IS_ERR(context)) {
2703 rc = PTR_ERR(context);
2705 } else if (context) {
2706 struct create_posix *posix =
2707 (struct create_posix *)context;
2708 if (le16_to_cpu(context->DataOffset) +
2709 le32_to_cpu(context->DataLength) <
2710 sizeof(struct create_posix) - 4) {
2714 ksmbd_debug(SMB, "get posix context\n");
2716 posix_mode = le32_to_cpu(posix->Mode);
2722 if (ksmbd_override_fsids(work)) {
2727 rc = ksmbd_vfs_kern_path(work, name, LOOKUP_NO_SYMLINKS, &path, 1);
2729 if (req->CreateOptions & FILE_DELETE_ON_CLOSE_LE) {
2731 * If file exists with under flags, return access
2734 if (req->CreateDisposition == FILE_OVERWRITE_IF_LE ||
2735 req->CreateDisposition == FILE_OPEN_IF_LE) {
2741 if (!test_tree_conn_flag(tcon, KSMBD_TREE_CONN_FLAG_WRITABLE)) {
2743 "User does not have write permission\n");
2748 } else if (d_is_symlink(path.dentry)) {
2758 ksmbd_debug(SMB, "can not get linux path for %s, rc = %d\n",
2762 file_present = true;
2763 user_ns = mnt_user_ns(path.mnt);
2764 generic_fillattr(user_ns, d_inode(path.dentry), &stat);
2767 if (req->CreateOptions & FILE_DIRECTORY_FILE_LE) {
2768 if (s_type == DATA_STREAM) {
2770 rsp->hdr.Status = STATUS_NOT_A_DIRECTORY;
2773 if (S_ISDIR(stat.mode) && s_type == DATA_STREAM) {
2775 rsp->hdr.Status = STATUS_FILE_IS_A_DIRECTORY;
2779 if (req->CreateOptions & FILE_DIRECTORY_FILE_LE &&
2780 req->FileAttributes & FILE_ATTRIBUTE_NORMAL_LE) {
2781 rsp->hdr.Status = STATUS_NOT_A_DIRECTORY;
2789 if (file_present && req->CreateOptions & FILE_NON_DIRECTORY_FILE_LE &&
2790 S_ISDIR(stat.mode) && !(req->CreateOptions & FILE_DELETE_ON_CLOSE_LE)) {
2791 ksmbd_debug(SMB, "open() argument is a directory: %s, %x\n",
2792 name, req->CreateOptions);
2793 rsp->hdr.Status = STATUS_FILE_IS_A_DIRECTORY;
2798 if (file_present && (req->CreateOptions & FILE_DIRECTORY_FILE_LE) &&
2799 !(req->CreateDisposition == FILE_CREATE_LE) &&
2800 !S_ISDIR(stat.mode)) {
2801 rsp->hdr.Status = STATUS_NOT_A_DIRECTORY;
2806 if (!stream_name && file_present &&
2807 req->CreateDisposition == FILE_CREATE_LE) {
2812 daccess = smb_map_generic_desired_access(req->DesiredAccess);
2814 if (file_present && !(req->CreateOptions & FILE_DELETE_ON_CLOSE_LE)) {
2815 rc = smb_check_perm_dacl(conn, &path, &daccess,
2821 if (daccess & FILE_MAXIMAL_ACCESS_LE) {
2822 if (!file_present) {
2823 daccess = cpu_to_le32(GENERIC_ALL_FLAGS);
2825 rc = ksmbd_vfs_query_maximal_access(user_ns,
2830 already_permitted = true;
2832 maximal_access = daccess;
2835 open_flags = smb2_create_open_flags(file_present, daccess,
2836 req->CreateDisposition,
2839 if (!test_tree_conn_flag(tcon, KSMBD_TREE_CONN_FLAG_WRITABLE)) {
2840 if (open_flags & O_CREAT) {
2842 "User does not have write permission\n");
2848 /*create file if not present */
2849 if (!file_present) {
2850 rc = smb2_creat(work, &path, name, open_flags, posix_mode,
2851 req->CreateOptions & FILE_DIRECTORY_FILE_LE);
2853 if (rc == -ENOENT) {
2855 rsp->hdr.Status = STATUS_OBJECT_PATH_NOT_FOUND;
2861 user_ns = mnt_user_ns(path.mnt);
2863 if (le32_to_cpu(ea_buf->ccontext.DataLength) <
2864 sizeof(struct smb2_ea_info)) {
2869 rc = smb2_set_ea(&ea_buf->ea,
2870 le32_to_cpu(ea_buf->ccontext.DataLength),
2872 if (rc == -EOPNOTSUPP)
2877 } else if (!already_permitted) {
2878 /* FILE_READ_ATTRIBUTE is allowed without inode_permission,
2879 * because execute(search) permission on a parent directory,
2880 * is already granted.
2882 if (daccess & ~(FILE_READ_ATTRIBUTES_LE | FILE_READ_CONTROL_LE)) {
2883 rc = inode_permission(user_ns,
2884 d_inode(path.dentry),
2889 if ((daccess & FILE_DELETE_LE) ||
2890 (req->CreateOptions & FILE_DELETE_ON_CLOSE_LE)) {
2891 rc = ksmbd_vfs_may_delete(user_ns,
2899 rc = ksmbd_query_inode_status(d_inode(path.dentry->d_parent));
2900 if (rc == KSMBD_INODE_STATUS_PENDING_DELETE) {
2906 filp = dentry_open(&path, open_flags, current_cred());
2909 pr_err("dentry open for dir failed, rc %d\n", rc);
2914 if (!(open_flags & O_TRUNC))
2915 file_info = FILE_OPENED;
2917 file_info = FILE_OVERWRITTEN;
2919 if ((req->CreateDisposition & FILE_CREATE_MASK_LE) ==
2921 file_info = FILE_SUPERSEDED;
2922 } else if (open_flags & O_CREAT) {
2923 file_info = FILE_CREATED;
2926 ksmbd_vfs_set_fadvise(filp, req->CreateOptions);
2928 /* Obtain Volatile-ID */
2929 fp = ksmbd_open_fd(work, filp);
2937 /* Get Persistent-ID */
2938 ksmbd_open_durable_fd(fp);
2939 if (!has_file_id(fp->persistent_id)) {
2944 fp->cdoption = req->CreateDisposition;
2945 fp->daccess = daccess;
2946 fp->saccess = req->ShareAccess;
2947 fp->coption = req->CreateOptions;
2949 /* Set default windows and posix acls if creating new file */
2952 struct inode *inode = d_inode(path.dentry);
2954 posix_acl_rc = ksmbd_vfs_inherit_posix_acl(user_ns,
2956 d_inode(path.dentry->d_parent));
2958 ksmbd_debug(SMB, "inherit posix acl failed : %d\n", posix_acl_rc);
2960 if (test_share_config_flag(work->tcon->share_conf,
2961 KSMBD_SHARE_FLAG_ACL_XATTR)) {
2962 rc = smb_inherit_dacl(conn, &path, sess->user->uid,
2967 rc = smb2_create_sd_buffer(work, req, &path);
2970 ksmbd_vfs_set_init_posix_acl(user_ns,
2973 if (test_share_config_flag(work->tcon->share_conf,
2974 KSMBD_SHARE_FLAG_ACL_XATTR)) {
2975 struct smb_fattr fattr;
2976 struct smb_ntsd *pntsd;
2977 int pntsd_size, ace_num = 0;
2979 ksmbd_acls_fattr(&fattr, user_ns, inode);
2981 ace_num = fattr.cf_acls->a_count;
2983 ace_num += fattr.cf_dacls->a_count;
2985 pntsd = kmalloc(sizeof(struct smb_ntsd) +
2986 sizeof(struct smb_sid) * 3 +
2987 sizeof(struct smb_acl) +
2988 sizeof(struct smb_ace) * ace_num * 2,
2993 rc = build_sec_desc(user_ns,
2998 &pntsd_size, &fattr);
2999 posix_acl_release(fattr.cf_acls);
3000 posix_acl_release(fattr.cf_dacls);
3006 rc = ksmbd_vfs_set_sd_xattr(conn,
3013 pr_err("failed to store ntacl in xattr : %d\n",
3022 rc = smb2_set_stream_name_xattr(&path,
3028 file_info = FILE_CREATED;
3031 fp->attrib_only = !(req->DesiredAccess & ~(FILE_READ_ATTRIBUTES_LE |
3032 FILE_WRITE_ATTRIBUTES_LE | FILE_SYNCHRONIZE_LE));
3033 if (!S_ISDIR(file_inode(filp)->i_mode) && open_flags & O_TRUNC &&
3034 !fp->attrib_only && !stream_name) {
3035 smb_break_all_oplock(work, fp);
3039 /* fp should be searchable through ksmbd_inode.m_fp_list
3040 * after daccess, saccess, attrib_only, and stream are
3043 write_lock(&fp->f_ci->m_lock);
3044 list_add(&fp->node, &fp->f_ci->m_fp_list);
3045 write_unlock(&fp->f_ci->m_lock);
3047 /* Check delete pending among previous fp before oplock break */
3048 if (ksmbd_inode_pending_delete(fp)) {
3053 share_ret = ksmbd_smb_check_shared_mode(fp->filp, fp);
3054 if (!test_share_config_flag(work->tcon->share_conf, KSMBD_SHARE_FLAG_OPLOCKS) ||
3055 (req_op_level == SMB2_OPLOCK_LEVEL_LEASE &&
3056 !(conn->vals->capabilities & SMB2_GLOBAL_CAP_LEASING))) {
3057 if (share_ret < 0 && !S_ISDIR(file_inode(fp->filp)->i_mode)) {
3062 if (req_op_level == SMB2_OPLOCK_LEVEL_LEASE) {
3063 req_op_level = smb2_map_lease_to_oplock(lc->req_state);
3065 "lease req for(%s) req oplock state 0x%x, lease state 0x%x\n",
3066 name, req_op_level, lc->req_state);
3067 rc = find_same_lease_key(sess, fp->f_ci, lc);
3070 } else if (open_flags == O_RDONLY &&
3071 (req_op_level == SMB2_OPLOCK_LEVEL_BATCH ||
3072 req_op_level == SMB2_OPLOCK_LEVEL_EXCLUSIVE))
3073 req_op_level = SMB2_OPLOCK_LEVEL_II;
3075 rc = smb_grant_oplock(work, req_op_level,
3076 fp->persistent_id, fp,
3077 le32_to_cpu(req->hdr.Id.SyncId.TreeId),
3083 if (req->CreateOptions & FILE_DELETE_ON_CLOSE_LE)
3084 ksmbd_fd_set_delete_on_close(fp, file_info);
3086 if (need_truncate) {
3087 rc = smb2_create_truncate(&path);
3092 if (req->CreateContextsOffset) {
3093 struct create_alloc_size_req *az_req;
3095 az_req = (struct create_alloc_size_req *)smb2_find_context_vals(req,
3096 SMB2_CREATE_ALLOCATION_SIZE);
3097 if (IS_ERR(az_req)) {
3098 rc = PTR_ERR(az_req);
3100 } else if (az_req) {
3104 if (le16_to_cpu(az_req->ccontext.DataOffset) +
3105 le32_to_cpu(az_req->ccontext.DataLength) <
3106 sizeof(struct create_alloc_size_req)) {
3110 alloc_size = le64_to_cpu(az_req->AllocationSize);
3112 "request smb2 create allocate size : %llu\n",
3114 smb_break_all_levII_oplock(work, fp, 1);
3115 err = vfs_fallocate(fp->filp, FALLOC_FL_KEEP_SIZE, 0,
3119 "vfs_fallocate is failed : %d\n",
3123 context = smb2_find_context_vals(req, SMB2_CREATE_QUERY_ON_DISK_ID);
3124 if (IS_ERR(context)) {
3125 rc = PTR_ERR(context);
3127 } else if (context) {
3128 ksmbd_debug(SMB, "get query on disk id context\n");
3133 rc = ksmbd_vfs_getattr(&path, &stat);
3137 if (stat.result_mask & STATX_BTIME)
3138 fp->create_time = ksmbd_UnixTimeToNT(stat.btime);
3140 fp->create_time = ksmbd_UnixTimeToNT(stat.ctime);
3141 if (req->FileAttributes || fp->f_ci->m_fattr == 0)
3143 cpu_to_le32(smb2_get_dos_mode(&stat, le32_to_cpu(req->FileAttributes)));
3146 smb2_update_xattrs(tcon, &path, fp);
3148 smb2_new_xattrs(tcon, &path, fp);
3150 memcpy(fp->client_guid, conn->ClientGUID, SMB2_CLIENT_GUID_SIZE);
3152 rsp->StructureSize = cpu_to_le16(89);
3154 opinfo = rcu_dereference(fp->f_opinfo);
3155 rsp->OplockLevel = opinfo != NULL ? opinfo->level : 0;
3158 rsp->CreateAction = cpu_to_le32(file_info);
3159 rsp->CreationTime = cpu_to_le64(fp->create_time);
3160 time = ksmbd_UnixTimeToNT(stat.atime);
3161 rsp->LastAccessTime = cpu_to_le64(time);
3162 time = ksmbd_UnixTimeToNT(stat.mtime);
3163 rsp->LastWriteTime = cpu_to_le64(time);
3164 time = ksmbd_UnixTimeToNT(stat.ctime);
3165 rsp->ChangeTime = cpu_to_le64(time);
3166 rsp->AllocationSize = S_ISDIR(stat.mode) ? 0 :
3167 cpu_to_le64(stat.blocks << 9);
3168 rsp->EndofFile = S_ISDIR(stat.mode) ? 0 : cpu_to_le64(stat.size);
3169 rsp->FileAttributes = fp->f_ci->m_fattr;
3173 rsp->PersistentFileId = fp->persistent_id;
3174 rsp->VolatileFileId = fp->volatile_id;
3176 rsp->CreateContextsOffset = 0;
3177 rsp->CreateContextsLength = 0;
3178 inc_rfc1001_len(work->response_buf, 88); /* StructureSize - 1*/
3180 /* If lease is request send lease context response */
3181 if (opinfo && opinfo->is_lease) {
3182 struct create_context *lease_ccontext;
3184 ksmbd_debug(SMB, "lease granted on(%s) lease state 0x%x\n",
3185 name, opinfo->o_lease->state);
3186 rsp->OplockLevel = SMB2_OPLOCK_LEVEL_LEASE;
3188 lease_ccontext = (struct create_context *)rsp->Buffer;
3190 create_lease_buf(rsp->Buffer, opinfo->o_lease);
3191 le32_add_cpu(&rsp->CreateContextsLength,
3192 conn->vals->create_lease_size);
3193 inc_rfc1001_len(work->response_buf,
3194 conn->vals->create_lease_size);
3195 next_ptr = &lease_ccontext->Next;
3196 next_off = conn->vals->create_lease_size;
3199 if (maximal_access_ctxt) {
3200 struct create_context *mxac_ccontext;
3202 if (maximal_access == 0)
3203 ksmbd_vfs_query_maximal_access(user_ns,
3206 mxac_ccontext = (struct create_context *)(rsp->Buffer +
3207 le32_to_cpu(rsp->CreateContextsLength));
3209 create_mxac_rsp_buf(rsp->Buffer +
3210 le32_to_cpu(rsp->CreateContextsLength),
3211 le32_to_cpu(maximal_access));
3212 le32_add_cpu(&rsp->CreateContextsLength,
3213 conn->vals->create_mxac_size);
3214 inc_rfc1001_len(work->response_buf,
3215 conn->vals->create_mxac_size);
3217 *next_ptr = cpu_to_le32(next_off);
3218 next_ptr = &mxac_ccontext->Next;
3219 next_off = conn->vals->create_mxac_size;
3222 if (query_disk_id) {
3223 struct create_context *disk_id_ccontext;
3225 disk_id_ccontext = (struct create_context *)(rsp->Buffer +
3226 le32_to_cpu(rsp->CreateContextsLength));
3228 create_disk_id_rsp_buf(rsp->Buffer +
3229 le32_to_cpu(rsp->CreateContextsLength),
3230 stat.ino, tcon->id);
3231 le32_add_cpu(&rsp->CreateContextsLength,
3232 conn->vals->create_disk_id_size);
3233 inc_rfc1001_len(work->response_buf,
3234 conn->vals->create_disk_id_size);
3236 *next_ptr = cpu_to_le32(next_off);
3237 next_ptr = &disk_id_ccontext->Next;
3238 next_off = conn->vals->create_disk_id_size;
3243 create_posix_rsp_buf(rsp->Buffer +
3244 le32_to_cpu(rsp->CreateContextsLength),
3246 le32_add_cpu(&rsp->CreateContextsLength,
3247 conn->vals->create_posix_size);
3248 inc_rfc1001_len(work->response_buf,
3249 conn->vals->create_posix_size);
3251 *next_ptr = cpu_to_le32(next_off);
3254 if (contxt_cnt > 0) {
3255 rsp->CreateContextsOffset =
3256 cpu_to_le32(offsetof(struct smb2_create_rsp, Buffer));
3260 if (file_present || created)
3262 ksmbd_revert_fsids(work);
3266 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
3267 else if (rc == -EOPNOTSUPP)
3268 rsp->hdr.Status = STATUS_NOT_SUPPORTED;
3269 else if (rc == -EACCES || rc == -ESTALE || rc == -EXDEV)
3270 rsp->hdr.Status = STATUS_ACCESS_DENIED;
3271 else if (rc == -ENOENT)
3272 rsp->hdr.Status = STATUS_OBJECT_NAME_INVALID;
3273 else if (rc == -EPERM)
3274 rsp->hdr.Status = STATUS_SHARING_VIOLATION;
3275 else if (rc == -EBUSY)
3276 rsp->hdr.Status = STATUS_DELETE_PENDING;
3277 else if (rc == -EBADF)
3278 rsp->hdr.Status = STATUS_OBJECT_NAME_NOT_FOUND;
3279 else if (rc == -ENOEXEC)
3280 rsp->hdr.Status = STATUS_DUPLICATE_OBJECTID;
3281 else if (rc == -ENXIO)
3282 rsp->hdr.Status = STATUS_NO_SUCH_DEVICE;
3283 else if (rc == -EEXIST)
3284 rsp->hdr.Status = STATUS_OBJECT_NAME_COLLISION;
3285 else if (rc == -EMFILE)
3286 rsp->hdr.Status = STATUS_INSUFFICIENT_RESOURCES;
3287 if (!rsp->hdr.Status)
3288 rsp->hdr.Status = STATUS_UNEXPECTED_IO_ERROR;
3291 ksmbd_fd_put(work, fp);
3292 smb2_set_err_rsp(work);
3293 ksmbd_debug(SMB, "Error response: %x\n", rsp->hdr.Status);
3302 static int readdir_info_level_struct_sz(int info_level)
3304 switch (info_level) {
3305 case FILE_FULL_DIRECTORY_INFORMATION:
3306 return sizeof(struct file_full_directory_info);
3307 case FILE_BOTH_DIRECTORY_INFORMATION:
3308 return sizeof(struct file_both_directory_info);
3309 case FILE_DIRECTORY_INFORMATION:
3310 return sizeof(struct file_directory_info);
3311 case FILE_NAMES_INFORMATION:
3312 return sizeof(struct file_names_info);
3313 case FILEID_FULL_DIRECTORY_INFORMATION:
3314 return sizeof(struct file_id_full_dir_info);
3315 case FILEID_BOTH_DIRECTORY_INFORMATION:
3316 return sizeof(struct file_id_both_directory_info);
3317 case SMB_FIND_FILE_POSIX_INFO:
3318 return sizeof(struct smb2_posix_info);
3324 static int dentry_name(struct ksmbd_dir_info *d_info, int info_level)
3326 switch (info_level) {
3327 case FILE_FULL_DIRECTORY_INFORMATION:
3329 struct file_full_directory_info *ffdinfo;
3331 ffdinfo = (struct file_full_directory_info *)d_info->rptr;
3332 d_info->rptr += le32_to_cpu(ffdinfo->NextEntryOffset);
3333 d_info->name = ffdinfo->FileName;
3334 d_info->name_len = le32_to_cpu(ffdinfo->FileNameLength);
3337 case FILE_BOTH_DIRECTORY_INFORMATION:
3339 struct file_both_directory_info *fbdinfo;
3341 fbdinfo = (struct file_both_directory_info *)d_info->rptr;
3342 d_info->rptr += le32_to_cpu(fbdinfo->NextEntryOffset);
3343 d_info->name = fbdinfo->FileName;
3344 d_info->name_len = le32_to_cpu(fbdinfo->FileNameLength);
3347 case FILE_DIRECTORY_INFORMATION:
3349 struct file_directory_info *fdinfo;
3351 fdinfo = (struct file_directory_info *)d_info->rptr;
3352 d_info->rptr += le32_to_cpu(fdinfo->NextEntryOffset);
3353 d_info->name = fdinfo->FileName;
3354 d_info->name_len = le32_to_cpu(fdinfo->FileNameLength);
3357 case FILE_NAMES_INFORMATION:
3359 struct file_names_info *fninfo;
3361 fninfo = (struct file_names_info *)d_info->rptr;
3362 d_info->rptr += le32_to_cpu(fninfo->NextEntryOffset);
3363 d_info->name = fninfo->FileName;
3364 d_info->name_len = le32_to_cpu(fninfo->FileNameLength);
3367 case FILEID_FULL_DIRECTORY_INFORMATION:
3369 struct file_id_full_dir_info *dinfo;
3371 dinfo = (struct file_id_full_dir_info *)d_info->rptr;
3372 d_info->rptr += le32_to_cpu(dinfo->NextEntryOffset);
3373 d_info->name = dinfo->FileName;
3374 d_info->name_len = le32_to_cpu(dinfo->FileNameLength);
3377 case FILEID_BOTH_DIRECTORY_INFORMATION:
3379 struct file_id_both_directory_info *fibdinfo;
3381 fibdinfo = (struct file_id_both_directory_info *)d_info->rptr;
3382 d_info->rptr += le32_to_cpu(fibdinfo->NextEntryOffset);
3383 d_info->name = fibdinfo->FileName;
3384 d_info->name_len = le32_to_cpu(fibdinfo->FileNameLength);
3387 case SMB_FIND_FILE_POSIX_INFO:
3389 struct smb2_posix_info *posix_info;
3391 posix_info = (struct smb2_posix_info *)d_info->rptr;
3392 d_info->rptr += le32_to_cpu(posix_info->NextEntryOffset);
3393 d_info->name = posix_info->name;
3394 d_info->name_len = le32_to_cpu(posix_info->name_len);
3403 * smb2_populate_readdir_entry() - encode directory entry in smb2 response
3405 * @conn: connection instance
3406 * @info_level: smb information level
3407 * @d_info: structure included variables for query dir
3408 * @ksmbd_kstat: ksmbd wrapper of dirent stat information
3410 * if directory has many entries, find first can't read it fully.
3411 * find next might be called multiple times to read remaining dir entries
3413 * Return: 0 on success, otherwise error
3415 static int smb2_populate_readdir_entry(struct ksmbd_conn *conn, int info_level,
3416 struct ksmbd_dir_info *d_info,
3417 struct ksmbd_kstat *ksmbd_kstat)
3419 int next_entry_offset = 0;
3423 int struct_sz, rc = 0;
3425 conv_name = ksmbd_convert_dir_info_name(d_info,
3431 /* Somehow the name has only terminating NULL bytes */
3434 goto free_conv_name;
3437 struct_sz = readdir_info_level_struct_sz(info_level) - 1 + conv_len;
3438 next_entry_offset = ALIGN(struct_sz, KSMBD_DIR_INFO_ALIGNMENT);
3439 d_info->last_entry_off_align = next_entry_offset - struct_sz;
3441 if (next_entry_offset > d_info->out_buf_len) {
3442 d_info->out_buf_len = 0;
3444 goto free_conv_name;
3447 kstat = d_info->wptr;
3448 if (info_level != FILE_NAMES_INFORMATION)
3449 kstat = ksmbd_vfs_init_kstat(&d_info->wptr, ksmbd_kstat);
3451 switch (info_level) {
3452 case FILE_FULL_DIRECTORY_INFORMATION:
3454 struct file_full_directory_info *ffdinfo;
3456 ffdinfo = (struct file_full_directory_info *)kstat;
3457 ffdinfo->FileNameLength = cpu_to_le32(conv_len);
3459 smb2_get_reparse_tag_special_file(ksmbd_kstat->kstat->mode);
3460 if (ffdinfo->EaSize)
3461 ffdinfo->ExtFileAttributes = FILE_ATTRIBUTE_REPARSE_POINT_LE;
3462 if (d_info->hide_dot_file && d_info->name[0] == '.')
3463 ffdinfo->ExtFileAttributes |= FILE_ATTRIBUTE_HIDDEN_LE;
3464 memcpy(ffdinfo->FileName, conv_name, conv_len);
3465 ffdinfo->NextEntryOffset = cpu_to_le32(next_entry_offset);
3468 case FILE_BOTH_DIRECTORY_INFORMATION:
3470 struct file_both_directory_info *fbdinfo;
3472 fbdinfo = (struct file_both_directory_info *)kstat;
3473 fbdinfo->FileNameLength = cpu_to_le32(conv_len);
3475 smb2_get_reparse_tag_special_file(ksmbd_kstat->kstat->mode);
3476 if (fbdinfo->EaSize)
3477 fbdinfo->ExtFileAttributes = FILE_ATTRIBUTE_REPARSE_POINT_LE;
3478 fbdinfo->ShortNameLength = 0;
3479 fbdinfo->Reserved = 0;
3480 if (d_info->hide_dot_file && d_info->name[0] == '.')
3481 fbdinfo->ExtFileAttributes |= FILE_ATTRIBUTE_HIDDEN_LE;
3482 memcpy(fbdinfo->FileName, conv_name, conv_len);
3483 fbdinfo->NextEntryOffset = cpu_to_le32(next_entry_offset);
3486 case FILE_DIRECTORY_INFORMATION:
3488 struct file_directory_info *fdinfo;
3490 fdinfo = (struct file_directory_info *)kstat;
3491 fdinfo->FileNameLength = cpu_to_le32(conv_len);
3492 if (d_info->hide_dot_file && d_info->name[0] == '.')
3493 fdinfo->ExtFileAttributes |= FILE_ATTRIBUTE_HIDDEN_LE;
3494 memcpy(fdinfo->FileName, conv_name, conv_len);
3495 fdinfo->NextEntryOffset = cpu_to_le32(next_entry_offset);
3498 case FILE_NAMES_INFORMATION:
3500 struct file_names_info *fninfo;
3502 fninfo = (struct file_names_info *)kstat;
3503 fninfo->FileNameLength = cpu_to_le32(conv_len);
3504 memcpy(fninfo->FileName, conv_name, conv_len);
3505 fninfo->NextEntryOffset = cpu_to_le32(next_entry_offset);
3508 case FILEID_FULL_DIRECTORY_INFORMATION:
3510 struct file_id_full_dir_info *dinfo;
3512 dinfo = (struct file_id_full_dir_info *)kstat;
3513 dinfo->FileNameLength = cpu_to_le32(conv_len);
3515 smb2_get_reparse_tag_special_file(ksmbd_kstat->kstat->mode);
3517 dinfo->ExtFileAttributes = FILE_ATTRIBUTE_REPARSE_POINT_LE;
3518 dinfo->Reserved = 0;
3519 dinfo->UniqueId = cpu_to_le64(ksmbd_kstat->kstat->ino);
3520 if (d_info->hide_dot_file && d_info->name[0] == '.')
3521 dinfo->ExtFileAttributes |= FILE_ATTRIBUTE_HIDDEN_LE;
3522 memcpy(dinfo->FileName, conv_name, conv_len);
3523 dinfo->NextEntryOffset = cpu_to_le32(next_entry_offset);
3526 case FILEID_BOTH_DIRECTORY_INFORMATION:
3528 struct file_id_both_directory_info *fibdinfo;
3530 fibdinfo = (struct file_id_both_directory_info *)kstat;
3531 fibdinfo->FileNameLength = cpu_to_le32(conv_len);
3533 smb2_get_reparse_tag_special_file(ksmbd_kstat->kstat->mode);
3534 if (fibdinfo->EaSize)
3535 fibdinfo->ExtFileAttributes = FILE_ATTRIBUTE_REPARSE_POINT_LE;
3536 fibdinfo->UniqueId = cpu_to_le64(ksmbd_kstat->kstat->ino);
3537 fibdinfo->ShortNameLength = 0;
3538 fibdinfo->Reserved = 0;
3539 fibdinfo->Reserved2 = cpu_to_le16(0);
3540 if (d_info->hide_dot_file && d_info->name[0] == '.')
3541 fibdinfo->ExtFileAttributes |= FILE_ATTRIBUTE_HIDDEN_LE;
3542 memcpy(fibdinfo->FileName, conv_name, conv_len);
3543 fibdinfo->NextEntryOffset = cpu_to_le32(next_entry_offset);
3546 case SMB_FIND_FILE_POSIX_INFO:
3548 struct smb2_posix_info *posix_info;
3551 posix_info = (struct smb2_posix_info *)kstat;
3552 posix_info->Ignored = 0;
3553 posix_info->CreationTime = cpu_to_le64(ksmbd_kstat->create_time);
3554 time = ksmbd_UnixTimeToNT(ksmbd_kstat->kstat->ctime);
3555 posix_info->ChangeTime = cpu_to_le64(time);
3556 time = ksmbd_UnixTimeToNT(ksmbd_kstat->kstat->atime);
3557 posix_info->LastAccessTime = cpu_to_le64(time);
3558 time = ksmbd_UnixTimeToNT(ksmbd_kstat->kstat->mtime);
3559 posix_info->LastWriteTime = cpu_to_le64(time);
3560 posix_info->EndOfFile = cpu_to_le64(ksmbd_kstat->kstat->size);
3561 posix_info->AllocationSize = cpu_to_le64(ksmbd_kstat->kstat->blocks << 9);
3562 posix_info->DeviceId = cpu_to_le32(ksmbd_kstat->kstat->rdev);
3563 posix_info->HardLinks = cpu_to_le32(ksmbd_kstat->kstat->nlink);
3564 posix_info->Mode = cpu_to_le32(ksmbd_kstat->kstat->mode);
3565 posix_info->Inode = cpu_to_le64(ksmbd_kstat->kstat->ino);
3566 posix_info->DosAttributes =
3567 S_ISDIR(ksmbd_kstat->kstat->mode) ?
3568 FILE_ATTRIBUTE_DIRECTORY_LE : FILE_ATTRIBUTE_ARCHIVE_LE;
3569 if (d_info->hide_dot_file && d_info->name[0] == '.')
3570 posix_info->DosAttributes |= FILE_ATTRIBUTE_HIDDEN_LE;
3571 id_to_sid(from_kuid_munged(&init_user_ns, ksmbd_kstat->kstat->uid),
3572 SIDNFS_USER, (struct smb_sid *)&posix_info->SidBuffer[0]);
3573 id_to_sid(from_kgid_munged(&init_user_ns, ksmbd_kstat->kstat->gid),
3574 SIDNFS_GROUP, (struct smb_sid *)&posix_info->SidBuffer[20]);
3575 memcpy(posix_info->name, conv_name, conv_len);
3576 posix_info->name_len = cpu_to_le32(conv_len);
3577 posix_info->NextEntryOffset = cpu_to_le32(next_entry_offset);
3581 } /* switch (info_level) */
3583 d_info->last_entry_offset = d_info->data_count;
3584 d_info->data_count += next_entry_offset;
3585 d_info->out_buf_len -= next_entry_offset;
3586 d_info->wptr += next_entry_offset;
3589 "info_level : %d, buf_len :%d, next_offset : %d, data_count : %d\n",
3590 info_level, d_info->out_buf_len,
3591 next_entry_offset, d_info->data_count);
3598 struct smb2_query_dir_private {
3599 struct ksmbd_work *work;
3600 char *search_pattern;
3601 struct ksmbd_file *dir_fp;
3603 struct ksmbd_dir_info *d_info;
3607 static void lock_dir(struct ksmbd_file *dir_fp)
3609 struct dentry *dir = dir_fp->filp->f_path.dentry;
3611 inode_lock_nested(d_inode(dir), I_MUTEX_PARENT);
3614 static void unlock_dir(struct ksmbd_file *dir_fp)
3616 struct dentry *dir = dir_fp->filp->f_path.dentry;
3618 inode_unlock(d_inode(dir));
3621 static int process_query_dir_entries(struct smb2_query_dir_private *priv)
3623 struct user_namespace *user_ns = file_mnt_user_ns(priv->dir_fp->filp);
3625 struct ksmbd_kstat ksmbd_kstat;
3629 for (i = 0; i < priv->d_info->num_entry; i++) {
3630 struct dentry *dent;
3632 if (dentry_name(priv->d_info, priv->info_level))
3635 lock_dir(priv->dir_fp);
3636 dent = lookup_one(user_ns, priv->d_info->name,
3637 priv->dir_fp->filp->f_path.dentry,
3638 priv->d_info->name_len);
3639 unlock_dir(priv->dir_fp);
3642 ksmbd_debug(SMB, "Cannot lookup `%s' [%ld]\n",
3647 if (unlikely(d_is_negative(dent))) {
3649 ksmbd_debug(SMB, "Negative dentry `%s'\n",
3650 priv->d_info->name);
3654 ksmbd_kstat.kstat = &kstat;
3655 if (priv->info_level != FILE_NAMES_INFORMATION)
3656 ksmbd_vfs_fill_dentry_attrs(priv->work,
3661 rc = smb2_populate_readdir_entry(priv->work->conn,
3672 static int reserve_populate_dentry(struct ksmbd_dir_info *d_info,
3677 int next_entry_offset;
3679 struct_sz = readdir_info_level_struct_sz(info_level);
3680 if (struct_sz == -EOPNOTSUPP)
3683 conv_len = (d_info->name_len + 1) * 2;
3684 next_entry_offset = ALIGN(struct_sz - 1 + conv_len,
3685 KSMBD_DIR_INFO_ALIGNMENT);
3687 if (next_entry_offset > d_info->out_buf_len) {
3688 d_info->out_buf_len = 0;
3692 switch (info_level) {
3693 case FILE_FULL_DIRECTORY_INFORMATION:
3695 struct file_full_directory_info *ffdinfo;
3697 ffdinfo = (struct file_full_directory_info *)d_info->wptr;
3698 memcpy(ffdinfo->FileName, d_info->name, d_info->name_len);
3699 ffdinfo->FileName[d_info->name_len] = 0x00;
3700 ffdinfo->FileNameLength = cpu_to_le32(d_info->name_len);
3701 ffdinfo->NextEntryOffset = cpu_to_le32(next_entry_offset);
3704 case FILE_BOTH_DIRECTORY_INFORMATION:
3706 struct file_both_directory_info *fbdinfo;
3708 fbdinfo = (struct file_both_directory_info *)d_info->wptr;
3709 memcpy(fbdinfo->FileName, d_info->name, d_info->name_len);
3710 fbdinfo->FileName[d_info->name_len] = 0x00;
3711 fbdinfo->FileNameLength = cpu_to_le32(d_info->name_len);
3712 fbdinfo->NextEntryOffset = cpu_to_le32(next_entry_offset);
3715 case FILE_DIRECTORY_INFORMATION:
3717 struct file_directory_info *fdinfo;
3719 fdinfo = (struct file_directory_info *)d_info->wptr;
3720 memcpy(fdinfo->FileName, d_info->name, d_info->name_len);
3721 fdinfo->FileName[d_info->name_len] = 0x00;
3722 fdinfo->FileNameLength = cpu_to_le32(d_info->name_len);
3723 fdinfo->NextEntryOffset = cpu_to_le32(next_entry_offset);
3726 case FILE_NAMES_INFORMATION:
3728 struct file_names_info *fninfo;
3730 fninfo = (struct file_names_info *)d_info->wptr;
3731 memcpy(fninfo->FileName, d_info->name, d_info->name_len);
3732 fninfo->FileName[d_info->name_len] = 0x00;
3733 fninfo->FileNameLength = cpu_to_le32(d_info->name_len);
3734 fninfo->NextEntryOffset = cpu_to_le32(next_entry_offset);
3737 case FILEID_FULL_DIRECTORY_INFORMATION:
3739 struct file_id_full_dir_info *dinfo;
3741 dinfo = (struct file_id_full_dir_info *)d_info->wptr;
3742 memcpy(dinfo->FileName, d_info->name, d_info->name_len);
3743 dinfo->FileName[d_info->name_len] = 0x00;
3744 dinfo->FileNameLength = cpu_to_le32(d_info->name_len);
3745 dinfo->NextEntryOffset = cpu_to_le32(next_entry_offset);
3748 case FILEID_BOTH_DIRECTORY_INFORMATION:
3750 struct file_id_both_directory_info *fibdinfo;
3752 fibdinfo = (struct file_id_both_directory_info *)d_info->wptr;
3753 memcpy(fibdinfo->FileName, d_info->name, d_info->name_len);
3754 fibdinfo->FileName[d_info->name_len] = 0x00;
3755 fibdinfo->FileNameLength = cpu_to_le32(d_info->name_len);
3756 fibdinfo->NextEntryOffset = cpu_to_le32(next_entry_offset);
3759 case SMB_FIND_FILE_POSIX_INFO:
3761 struct smb2_posix_info *posix_info;
3763 posix_info = (struct smb2_posix_info *)d_info->wptr;
3764 memcpy(posix_info->name, d_info->name, d_info->name_len);
3765 posix_info->name[d_info->name_len] = 0x00;
3766 posix_info->name_len = cpu_to_le32(d_info->name_len);
3767 posix_info->NextEntryOffset =
3768 cpu_to_le32(next_entry_offset);
3771 } /* switch (info_level) */
3773 d_info->num_entry++;
3774 d_info->out_buf_len -= next_entry_offset;
3775 d_info->wptr += next_entry_offset;
3779 static int __query_dir(struct dir_context *ctx, const char *name, int namlen,
3780 loff_t offset, u64 ino, unsigned int d_type)
3782 struct ksmbd_readdir_data *buf;
3783 struct smb2_query_dir_private *priv;
3784 struct ksmbd_dir_info *d_info;
3787 buf = container_of(ctx, struct ksmbd_readdir_data, ctx);
3788 priv = buf->private;
3789 d_info = priv->d_info;
3791 /* dot and dotdot entries are already reserved */
3792 if (!strcmp(".", name) || !strcmp("..", name))
3794 if (ksmbd_share_veto_filename(priv->work->tcon->share_conf, name))
3796 if (!match_pattern(name, namlen, priv->search_pattern))
3799 d_info->name = name;
3800 d_info->name_len = namlen;
3801 rc = reserve_populate_dentry(d_info, priv->info_level);
3804 if (d_info->flags & SMB2_RETURN_SINGLE_ENTRY) {
3805 d_info->out_buf_len = 0;
3811 static void restart_ctx(struct dir_context *ctx)
3816 static int verify_info_level(int info_level)
3818 switch (info_level) {
3819 case FILE_FULL_DIRECTORY_INFORMATION:
3820 case FILE_BOTH_DIRECTORY_INFORMATION:
3821 case FILE_DIRECTORY_INFORMATION:
3822 case FILE_NAMES_INFORMATION:
3823 case FILEID_FULL_DIRECTORY_INFORMATION:
3824 case FILEID_BOTH_DIRECTORY_INFORMATION:
3825 case SMB_FIND_FILE_POSIX_INFO:
3834 static int smb2_resp_buf_len(struct ksmbd_work *work, unsigned short hdr2_len)
3838 free_len = (int)(work->response_sz -
3839 (get_rfc1002_len(work->response_buf) + 4)) - hdr2_len;
3843 static int smb2_calc_max_out_buf_len(struct ksmbd_work *work,
3844 unsigned short hdr2_len,
3845 unsigned int out_buf_len)
3849 if (out_buf_len > work->conn->vals->max_trans_size)
3852 free_len = smb2_resp_buf_len(work, hdr2_len);
3856 return min_t(int, out_buf_len, free_len);
3859 int smb2_query_dir(struct ksmbd_work *work)
3861 struct ksmbd_conn *conn = work->conn;
3862 struct smb2_query_directory_req *req;
3863 struct smb2_query_directory_rsp *rsp;
3864 struct ksmbd_share_config *share = work->tcon->share_conf;
3865 struct ksmbd_file *dir_fp = NULL;
3866 struct ksmbd_dir_info d_info;
3868 char *srch_ptr = NULL;
3869 unsigned char srch_flag;
3871 struct smb2_query_dir_private query_dir_private = {NULL, };
3873 WORK_BUFFERS(work, req, rsp);
3875 if (ksmbd_override_fsids(work)) {
3876 rsp->hdr.Status = STATUS_NO_MEMORY;
3877 smb2_set_err_rsp(work);
3881 rc = verify_info_level(req->FileInformationClass);
3887 dir_fp = ksmbd_lookup_fd_slow(work, req->VolatileFileId, req->PersistentFileId);
3893 if (!(dir_fp->daccess & FILE_LIST_DIRECTORY_LE) ||
3894 inode_permission(file_mnt_user_ns(dir_fp->filp),
3895 file_inode(dir_fp->filp),
3896 MAY_READ | MAY_EXEC)) {
3897 pr_err("no right to enumerate directory (%pd)\n",
3898 dir_fp->filp->f_path.dentry);
3903 if (!S_ISDIR(file_inode(dir_fp->filp)->i_mode)) {
3904 pr_err("can't do query dir for a file\n");
3909 srch_flag = req->Flags;
3910 srch_ptr = smb_strndup_from_utf16(req->Buffer,
3911 le16_to_cpu(req->FileNameLength), 1,
3913 if (IS_ERR(srch_ptr)) {
3914 ksmbd_debug(SMB, "Search Pattern not found\n");
3918 ksmbd_debug(SMB, "Search pattern is %s\n", srch_ptr);
3921 if (srch_flag & SMB2_REOPEN || srch_flag & SMB2_RESTART_SCANS) {
3922 ksmbd_debug(SMB, "Restart directory scan\n");
3923 generic_file_llseek(dir_fp->filp, 0, SEEK_SET);
3924 restart_ctx(&dir_fp->readdir_data.ctx);
3927 memset(&d_info, 0, sizeof(struct ksmbd_dir_info));
3928 d_info.wptr = (char *)rsp->Buffer;
3929 d_info.rptr = (char *)rsp->Buffer;
3930 d_info.out_buf_len =
3931 smb2_calc_max_out_buf_len(work, 8,
3932 le32_to_cpu(req->OutputBufferLength));
3933 if (d_info.out_buf_len < 0) {
3937 d_info.flags = srch_flag;
3940 * reserve dot and dotdot entries in head of buffer
3943 rc = ksmbd_populate_dot_dotdot_entries(work, req->FileInformationClass,
3944 dir_fp, &d_info, srch_ptr,
3945 smb2_populate_readdir_entry);
3951 if (test_share_config_flag(share, KSMBD_SHARE_FLAG_HIDE_DOT_FILES))
3952 d_info.hide_dot_file = true;
3954 buffer_sz = d_info.out_buf_len;
3955 d_info.rptr = d_info.wptr;
3956 query_dir_private.work = work;
3957 query_dir_private.search_pattern = srch_ptr;
3958 query_dir_private.dir_fp = dir_fp;
3959 query_dir_private.d_info = &d_info;
3960 query_dir_private.info_level = req->FileInformationClass;
3961 dir_fp->readdir_data.private = &query_dir_private;
3962 set_ctx_actor(&dir_fp->readdir_data.ctx, __query_dir);
3964 rc = iterate_dir(dir_fp->filp, &dir_fp->readdir_data.ctx);
3966 * req->OutputBufferLength is too small to contain even one entry.
3967 * In this case, it immediately returns OutputBufferLength 0 to client.
3969 if (!d_info.out_buf_len && !d_info.num_entry)
3972 restart_ctx(&dir_fp->readdir_data.ctx);
3978 d_info.wptr = d_info.rptr;
3979 d_info.out_buf_len = buffer_sz;
3980 rc = process_query_dir_entries(&query_dir_private);
3984 if (!d_info.data_count && d_info.out_buf_len >= 0) {
3985 if (srch_flag & SMB2_RETURN_SINGLE_ENTRY && !is_asterisk(srch_ptr)) {
3986 rsp->hdr.Status = STATUS_NO_SUCH_FILE;
3988 dir_fp->dot_dotdot[0] = dir_fp->dot_dotdot[1] = 0;
3989 rsp->hdr.Status = STATUS_NO_MORE_FILES;
3991 rsp->StructureSize = cpu_to_le16(9);
3992 rsp->OutputBufferOffset = cpu_to_le16(0);
3993 rsp->OutputBufferLength = cpu_to_le32(0);
3995 inc_rfc1001_len(work->response_buf, 9);
3998 ((struct file_directory_info *)
3999 ((char *)rsp->Buffer + d_info.last_entry_offset))
4000 ->NextEntryOffset = 0;
4001 if (d_info.data_count >= d_info.last_entry_off_align)
4002 d_info.data_count -= d_info.last_entry_off_align;
4004 rsp->StructureSize = cpu_to_le16(9);
4005 rsp->OutputBufferOffset = cpu_to_le16(72);
4006 rsp->OutputBufferLength = cpu_to_le32(d_info.data_count);
4007 inc_rfc1001_len(work->response_buf, 8 + d_info.data_count);
4011 ksmbd_fd_put(work, dir_fp);
4012 ksmbd_revert_fsids(work);
4016 pr_err("error while processing smb2 query dir rc = %d\n", rc);
4021 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
4022 else if (rc == -EACCES)
4023 rsp->hdr.Status = STATUS_ACCESS_DENIED;
4024 else if (rc == -ENOENT)
4025 rsp->hdr.Status = STATUS_NO_SUCH_FILE;
4026 else if (rc == -EBADF)
4027 rsp->hdr.Status = STATUS_FILE_CLOSED;
4028 else if (rc == -ENOMEM)
4029 rsp->hdr.Status = STATUS_NO_MEMORY;
4030 else if (rc == -EFAULT)
4031 rsp->hdr.Status = STATUS_INVALID_INFO_CLASS;
4032 if (!rsp->hdr.Status)
4033 rsp->hdr.Status = STATUS_UNEXPECTED_IO_ERROR;
4035 smb2_set_err_rsp(work);
4036 ksmbd_fd_put(work, dir_fp);
4037 ksmbd_revert_fsids(work);
4042 * buffer_check_err() - helper function to check buffer errors
4043 * @reqOutputBufferLength: max buffer length expected in command response
4044 * @rsp: query info response buffer contains output buffer length
4045 * @rsp_org: base response buffer pointer in case of chained response
4046 * @infoclass_size: query info class response buffer size
4048 * Return: 0 on success, otherwise error
4050 static int buffer_check_err(int reqOutputBufferLength,
4051 struct smb2_query_info_rsp *rsp,
4052 void *rsp_org, int infoclass_size)
4054 if (reqOutputBufferLength < le32_to_cpu(rsp->OutputBufferLength)) {
4055 if (reqOutputBufferLength < infoclass_size) {
4056 pr_err("Invalid Buffer Size Requested\n");
4057 rsp->hdr.Status = STATUS_INFO_LENGTH_MISMATCH;
4058 *(__be32 *)rsp_org = cpu_to_be32(sizeof(struct smb2_hdr));
4062 ksmbd_debug(SMB, "Buffer Overflow\n");
4063 rsp->hdr.Status = STATUS_BUFFER_OVERFLOW;
4064 *(__be32 *)rsp_org = cpu_to_be32(sizeof(struct smb2_hdr) +
4065 reqOutputBufferLength);
4066 rsp->OutputBufferLength = cpu_to_le32(reqOutputBufferLength);
4071 static void get_standard_info_pipe(struct smb2_query_info_rsp *rsp,
4074 struct smb2_file_standard_info *sinfo;
4076 sinfo = (struct smb2_file_standard_info *)rsp->Buffer;
4078 sinfo->AllocationSize = cpu_to_le64(4096);
4079 sinfo->EndOfFile = cpu_to_le64(0);
4080 sinfo->NumberOfLinks = cpu_to_le32(1);
4081 sinfo->DeletePending = 1;
4082 sinfo->Directory = 0;
4083 rsp->OutputBufferLength =
4084 cpu_to_le32(sizeof(struct smb2_file_standard_info));
4085 inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_standard_info));
4088 static void get_internal_info_pipe(struct smb2_query_info_rsp *rsp, u64 num,
4091 struct smb2_file_internal_info *file_info;
4093 file_info = (struct smb2_file_internal_info *)rsp->Buffer;
4095 /* any unique number */
4096 file_info->IndexNumber = cpu_to_le64(num | (1ULL << 63));
4097 rsp->OutputBufferLength =
4098 cpu_to_le32(sizeof(struct smb2_file_internal_info));
4099 inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_internal_info));
4102 static int smb2_get_info_file_pipe(struct ksmbd_session *sess,
4103 struct smb2_query_info_req *req,
4104 struct smb2_query_info_rsp *rsp,
4111 * Windows can sometime send query file info request on
4112 * pipe without opening it, checking error condition here
4114 id = req->VolatileFileId;
4115 if (!ksmbd_session_rpc_method(sess, id))
4118 ksmbd_debug(SMB, "FileInfoClass %u, FileId 0x%llx\n",
4119 req->FileInfoClass, req->VolatileFileId);
4121 switch (req->FileInfoClass) {
4122 case FILE_STANDARD_INFORMATION:
4123 get_standard_info_pipe(rsp, rsp_org);
4124 rc = buffer_check_err(le32_to_cpu(req->OutputBufferLength),
4126 FILE_STANDARD_INFORMATION_SIZE);
4128 case FILE_INTERNAL_INFORMATION:
4129 get_internal_info_pipe(rsp, id, rsp_org);
4130 rc = buffer_check_err(le32_to_cpu(req->OutputBufferLength),
4132 FILE_INTERNAL_INFORMATION_SIZE);
4135 ksmbd_debug(SMB, "smb2_info_file_pipe for %u not supported\n",
4136 req->FileInfoClass);
4143 * smb2_get_ea() - handler for smb2 get extended attribute command
4144 * @work: smb work containing query info command buffer
4145 * @fp: ksmbd_file pointer
4146 * @req: get extended attribute request
4147 * @rsp: response buffer pointer
4148 * @rsp_org: base response buffer pointer in case of chained response
4150 * Return: 0 on success, otherwise error
4152 static int smb2_get_ea(struct ksmbd_work *work, struct ksmbd_file *fp,
4153 struct smb2_query_info_req *req,
4154 struct smb2_query_info_rsp *rsp, void *rsp_org)
4156 struct smb2_ea_info *eainfo, *prev_eainfo;
4157 char *name, *ptr, *xattr_list = NULL, *buf;
4158 int rc, name_len, value_len, xattr_list_len, idx;
4159 ssize_t buf_free_len, alignment_bytes, next_offset, rsp_data_cnt = 0;
4160 struct smb2_ea_info_req *ea_req = NULL;
4162 struct user_namespace *user_ns = file_mnt_user_ns(fp->filp);
4164 if (!(fp->daccess & FILE_READ_EA_LE)) {
4165 pr_err("Not permitted to read ext attr : 0x%x\n",
4170 path = &fp->filp->f_path;
4171 /* single EA entry is requested with given user.* name */
4172 if (req->InputBufferLength) {
4173 if (le32_to_cpu(req->InputBufferLength) <
4174 sizeof(struct smb2_ea_info_req))
4177 ea_req = (struct smb2_ea_info_req *)req->Buffer;
4179 /* need to send all EAs, if no specific EA is requested*/
4180 if (le32_to_cpu(req->Flags) & SL_RETURN_SINGLE_ENTRY)
4182 "All EAs are requested but need to send single EA entry in rsp flags 0x%x\n",
4183 le32_to_cpu(req->Flags));
4187 smb2_calc_max_out_buf_len(work, 8,
4188 le32_to_cpu(req->OutputBufferLength));
4189 if (buf_free_len < 0)
4192 rc = ksmbd_vfs_listxattr(path->dentry, &xattr_list);
4194 rsp->hdr.Status = STATUS_INVALID_HANDLE;
4196 } else if (!rc) { /* there is no EA in the file */
4197 ksmbd_debug(SMB, "no ea data in the file\n");
4200 xattr_list_len = rc;
4202 ptr = (char *)rsp->Buffer;
4203 eainfo = (struct smb2_ea_info *)ptr;
4204 prev_eainfo = eainfo;
4207 while (idx < xattr_list_len) {
4208 name = xattr_list + idx;
4209 name_len = strlen(name);
4211 ksmbd_debug(SMB, "%s, len %d\n", name, name_len);
4212 idx += name_len + 1;
4215 * CIFS does not support EA other than user.* namespace,
4216 * still keep the framework generic, to list other attrs
4219 if (strncmp(name, XATTR_USER_PREFIX, XATTR_USER_PREFIX_LEN))
4222 if (!strncmp(&name[XATTR_USER_PREFIX_LEN], STREAM_PREFIX,
4226 if (req->InputBufferLength &&
4227 strncmp(&name[XATTR_USER_PREFIX_LEN], ea_req->name,
4228 ea_req->EaNameLength))
4231 if (!strncmp(&name[XATTR_USER_PREFIX_LEN],
4232 DOS_ATTRIBUTE_PREFIX, DOS_ATTRIBUTE_PREFIX_LEN))
4235 if (!strncmp(name, XATTR_USER_PREFIX, XATTR_USER_PREFIX_LEN))
4236 name_len -= XATTR_USER_PREFIX_LEN;
4238 ptr = (char *)(&eainfo->name + name_len + 1);
4239 buf_free_len -= (offsetof(struct smb2_ea_info, name) +
4241 /* bailout if xattr can't fit in buf_free_len */
4242 value_len = ksmbd_vfs_getxattr(user_ns, path->dentry,
4244 if (value_len <= 0) {
4246 rsp->hdr.Status = STATUS_INVALID_HANDLE;
4250 buf_free_len -= value_len;
4251 if (buf_free_len < 0) {
4256 memcpy(ptr, buf, value_len);
4261 eainfo->EaNameLength = name_len;
4263 if (!strncmp(name, XATTR_USER_PREFIX, XATTR_USER_PREFIX_LEN))
4264 memcpy(eainfo->name, &name[XATTR_USER_PREFIX_LEN],
4267 memcpy(eainfo->name, name, name_len);
4269 eainfo->name[name_len] = '\0';
4270 eainfo->EaValueLength = cpu_to_le16(value_len);
4271 next_offset = offsetof(struct smb2_ea_info, name) +
4272 name_len + 1 + value_len;
4274 /* align next xattr entry at 4 byte bundary */
4275 alignment_bytes = ((next_offset + 3) & ~3) - next_offset;
4276 if (alignment_bytes) {
4277 memset(ptr, '\0', alignment_bytes);
4278 ptr += alignment_bytes;
4279 next_offset += alignment_bytes;
4280 buf_free_len -= alignment_bytes;
4282 eainfo->NextEntryOffset = cpu_to_le32(next_offset);
4283 prev_eainfo = eainfo;
4284 eainfo = (struct smb2_ea_info *)ptr;
4285 rsp_data_cnt += next_offset;
4287 if (req->InputBufferLength) {
4288 ksmbd_debug(SMB, "single entry requested\n");
4293 /* no more ea entries */
4294 prev_eainfo->NextEntryOffset = 0;
4297 if (rsp_data_cnt == 0)
4298 rsp->hdr.Status = STATUS_NO_EAS_ON_FILE;
4299 rsp->OutputBufferLength = cpu_to_le32(rsp_data_cnt);
4300 inc_rfc1001_len(rsp_org, rsp_data_cnt);
4306 static void get_file_access_info(struct smb2_query_info_rsp *rsp,
4307 struct ksmbd_file *fp, void *rsp_org)
4309 struct smb2_file_access_info *file_info;
4311 file_info = (struct smb2_file_access_info *)rsp->Buffer;
4312 file_info->AccessFlags = fp->daccess;
4313 rsp->OutputBufferLength =
4314 cpu_to_le32(sizeof(struct smb2_file_access_info));
4315 inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_access_info));
4318 static int get_file_basic_info(struct smb2_query_info_rsp *rsp,
4319 struct ksmbd_file *fp, void *rsp_org)
4321 struct smb2_file_basic_info *basic_info;
4325 if (!(fp->daccess & FILE_READ_ATTRIBUTES_LE)) {
4326 pr_err("no right to read the attributes : 0x%x\n",
4331 basic_info = (struct smb2_file_basic_info *)rsp->Buffer;
4332 generic_fillattr(file_mnt_user_ns(fp->filp), file_inode(fp->filp),
4334 basic_info->CreationTime = cpu_to_le64(fp->create_time);
4335 time = ksmbd_UnixTimeToNT(stat.atime);
4336 basic_info->LastAccessTime = cpu_to_le64(time);
4337 time = ksmbd_UnixTimeToNT(stat.mtime);
4338 basic_info->LastWriteTime = cpu_to_le64(time);
4339 time = ksmbd_UnixTimeToNT(stat.ctime);
4340 basic_info->ChangeTime = cpu_to_le64(time);
4341 basic_info->Attributes = fp->f_ci->m_fattr;
4342 basic_info->Pad1 = 0;
4343 rsp->OutputBufferLength =
4344 cpu_to_le32(sizeof(struct smb2_file_basic_info));
4345 inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_basic_info));
4349 static unsigned long long get_allocation_size(struct inode *inode,
4352 unsigned long long alloc_size = 0;
4354 if (!S_ISDIR(stat->mode)) {
4355 if ((inode->i_blocks << 9) <= stat->size)
4356 alloc_size = stat->size;
4358 alloc_size = inode->i_blocks << 9;
4364 static void get_file_standard_info(struct smb2_query_info_rsp *rsp,
4365 struct ksmbd_file *fp, void *rsp_org)
4367 struct smb2_file_standard_info *sinfo;
4368 unsigned int delete_pending;
4369 struct inode *inode;
4372 inode = file_inode(fp->filp);
4373 generic_fillattr(file_mnt_user_ns(fp->filp), inode, &stat);
4375 sinfo = (struct smb2_file_standard_info *)rsp->Buffer;
4376 delete_pending = ksmbd_inode_pending_delete(fp);
4378 sinfo->AllocationSize = cpu_to_le64(get_allocation_size(inode, &stat));
4379 sinfo->EndOfFile = S_ISDIR(stat.mode) ? 0 : cpu_to_le64(stat.size);
4380 sinfo->NumberOfLinks = cpu_to_le32(get_nlink(&stat) - delete_pending);
4381 sinfo->DeletePending = delete_pending;
4382 sinfo->Directory = S_ISDIR(stat.mode) ? 1 : 0;
4383 rsp->OutputBufferLength =
4384 cpu_to_le32(sizeof(struct smb2_file_standard_info));
4385 inc_rfc1001_len(rsp_org,
4386 sizeof(struct smb2_file_standard_info));
4389 static void get_file_alignment_info(struct smb2_query_info_rsp *rsp,
4392 struct smb2_file_alignment_info *file_info;
4394 file_info = (struct smb2_file_alignment_info *)rsp->Buffer;
4395 file_info->AlignmentRequirement = 0;
4396 rsp->OutputBufferLength =
4397 cpu_to_le32(sizeof(struct smb2_file_alignment_info));
4398 inc_rfc1001_len(rsp_org,
4399 sizeof(struct smb2_file_alignment_info));
4402 static int get_file_all_info(struct ksmbd_work *work,
4403 struct smb2_query_info_rsp *rsp,
4404 struct ksmbd_file *fp,
4407 struct ksmbd_conn *conn = work->conn;
4408 struct smb2_file_all_info *file_info;
4409 unsigned int delete_pending;
4410 struct inode *inode;
4416 if (!(fp->daccess & FILE_READ_ATTRIBUTES_LE)) {
4417 ksmbd_debug(SMB, "no right to read the attributes : 0x%x\n",
4422 filename = convert_to_nt_pathname(work->tcon->share_conf, &fp->filp->f_path);
4423 if (IS_ERR(filename))
4424 return PTR_ERR(filename);
4426 inode = file_inode(fp->filp);
4427 generic_fillattr(file_mnt_user_ns(fp->filp), inode, &stat);
4429 ksmbd_debug(SMB, "filename = %s\n", filename);
4430 delete_pending = ksmbd_inode_pending_delete(fp);
4431 file_info = (struct smb2_file_all_info *)rsp->Buffer;
4433 file_info->CreationTime = cpu_to_le64(fp->create_time);
4434 time = ksmbd_UnixTimeToNT(stat.atime);
4435 file_info->LastAccessTime = cpu_to_le64(time);
4436 time = ksmbd_UnixTimeToNT(stat.mtime);
4437 file_info->LastWriteTime = cpu_to_le64(time);
4438 time = ksmbd_UnixTimeToNT(stat.ctime);
4439 file_info->ChangeTime = cpu_to_le64(time);
4440 file_info->Attributes = fp->f_ci->m_fattr;
4441 file_info->Pad1 = 0;
4442 file_info->AllocationSize =
4443 cpu_to_le64(get_allocation_size(inode, &stat));
4444 file_info->EndOfFile = S_ISDIR(stat.mode) ? 0 : cpu_to_le64(stat.size);
4445 file_info->NumberOfLinks =
4446 cpu_to_le32(get_nlink(&stat) - delete_pending);
4447 file_info->DeletePending = delete_pending;
4448 file_info->Directory = S_ISDIR(stat.mode) ? 1 : 0;
4449 file_info->Pad2 = 0;
4450 file_info->IndexNumber = cpu_to_le64(stat.ino);
4451 file_info->EASize = 0;
4452 file_info->AccessFlags = fp->daccess;
4453 file_info->CurrentByteOffset = cpu_to_le64(fp->filp->f_pos);
4454 file_info->Mode = fp->coption;
4455 file_info->AlignmentRequirement = 0;
4456 conv_len = smbConvertToUTF16((__le16 *)file_info->FileName, filename,
4457 PATH_MAX, conn->local_nls, 0);
4459 file_info->FileNameLength = cpu_to_le32(conv_len);
4460 rsp->OutputBufferLength =
4461 cpu_to_le32(sizeof(struct smb2_file_all_info) + conv_len - 1);
4463 inc_rfc1001_len(rsp_org, le32_to_cpu(rsp->OutputBufferLength));
4467 static void get_file_alternate_info(struct ksmbd_work *work,
4468 struct smb2_query_info_rsp *rsp,
4469 struct ksmbd_file *fp,
4472 struct ksmbd_conn *conn = work->conn;
4473 struct smb2_file_alt_name_info *file_info;
4474 struct dentry *dentry = fp->filp->f_path.dentry;
4477 spin_lock(&dentry->d_lock);
4478 file_info = (struct smb2_file_alt_name_info *)rsp->Buffer;
4479 conv_len = ksmbd_extract_shortname(conn,
4480 dentry->d_name.name,
4481 file_info->FileName);
4482 spin_unlock(&dentry->d_lock);
4483 file_info->FileNameLength = cpu_to_le32(conv_len);
4484 rsp->OutputBufferLength =
4485 cpu_to_le32(sizeof(struct smb2_file_alt_name_info) + conv_len);
4486 inc_rfc1001_len(rsp_org, le32_to_cpu(rsp->OutputBufferLength));
4489 static void get_file_stream_info(struct ksmbd_work *work,
4490 struct smb2_query_info_rsp *rsp,
4491 struct ksmbd_file *fp,
4494 struct ksmbd_conn *conn = work->conn;
4495 struct smb2_file_stream_info *file_info;
4496 char *stream_name, *xattr_list = NULL, *stream_buf;
4498 struct path *path = &fp->filp->f_path;
4499 ssize_t xattr_list_len;
4500 int nbytes = 0, streamlen, stream_name_len, next, idx = 0;
4502 struct smb2_query_info_req *req = ksmbd_req_buf_next(work);
4504 generic_fillattr(file_mnt_user_ns(fp->filp), file_inode(fp->filp),
4506 file_info = (struct smb2_file_stream_info *)rsp->Buffer;
4509 smb2_calc_max_out_buf_len(work, 8,
4510 le32_to_cpu(req->OutputBufferLength));
4511 if (buf_free_len < 0)
4514 xattr_list_len = ksmbd_vfs_listxattr(path->dentry, &xattr_list);
4515 if (xattr_list_len < 0) {
4517 } else if (!xattr_list_len) {
4518 ksmbd_debug(SMB, "empty xattr in the file\n");
4522 while (idx < xattr_list_len) {
4523 stream_name = xattr_list + idx;
4524 streamlen = strlen(stream_name);
4525 idx += streamlen + 1;
4527 ksmbd_debug(SMB, "%s, len %d\n", stream_name, streamlen);
4529 if (strncmp(&stream_name[XATTR_USER_PREFIX_LEN],
4530 STREAM_PREFIX, STREAM_PREFIX_LEN))
4533 stream_name_len = streamlen - (XATTR_USER_PREFIX_LEN +
4535 streamlen = stream_name_len;
4539 stream_buf = kmalloc(streamlen + 1, GFP_KERNEL);
4543 streamlen = snprintf(stream_buf, streamlen + 1,
4544 ":%s", &stream_name[XATTR_NAME_STREAM_LEN]);
4546 next = sizeof(struct smb2_file_stream_info) + streamlen * 2;
4547 if (next > buf_free_len) {
4552 file_info = (struct smb2_file_stream_info *)&rsp->Buffer[nbytes];
4553 streamlen = smbConvertToUTF16((__le16 *)file_info->StreamName,
4554 stream_buf, streamlen,
4555 conn->local_nls, 0);
4558 file_info->StreamNameLength = cpu_to_le32(streamlen);
4559 file_info->StreamSize = cpu_to_le64(stream_name_len);
4560 file_info->StreamAllocationSize = cpu_to_le64(stream_name_len);
4563 buf_free_len -= next;
4564 file_info->NextEntryOffset = cpu_to_le32(next);
4568 if (!S_ISDIR(stat.mode) &&
4569 buf_free_len >= sizeof(struct smb2_file_stream_info) + 7 * 2) {
4570 file_info = (struct smb2_file_stream_info *)
4571 &rsp->Buffer[nbytes];
4572 streamlen = smbConvertToUTF16((__le16 *)file_info->StreamName,
4573 "::$DATA", 7, conn->local_nls, 0);
4575 file_info->StreamNameLength = cpu_to_le32(streamlen);
4576 file_info->StreamSize = cpu_to_le64(stat.size);
4577 file_info->StreamAllocationSize = cpu_to_le64(stat.blocks << 9);
4578 nbytes += sizeof(struct smb2_file_stream_info) + streamlen;
4581 /* last entry offset should be 0 */
4582 file_info->NextEntryOffset = 0;
4585 rsp->OutputBufferLength = cpu_to_le32(nbytes);
4586 inc_rfc1001_len(rsp_org, nbytes);
4589 static void get_file_internal_info(struct smb2_query_info_rsp *rsp,
4590 struct ksmbd_file *fp, void *rsp_org)
4592 struct smb2_file_internal_info *file_info;
4595 generic_fillattr(file_mnt_user_ns(fp->filp), file_inode(fp->filp),
4597 file_info = (struct smb2_file_internal_info *)rsp->Buffer;
4598 file_info->IndexNumber = cpu_to_le64(stat.ino);
4599 rsp->OutputBufferLength =
4600 cpu_to_le32(sizeof(struct smb2_file_internal_info));
4601 inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_internal_info));
4604 static int get_file_network_open_info(struct smb2_query_info_rsp *rsp,
4605 struct ksmbd_file *fp, void *rsp_org)
4607 struct smb2_file_ntwrk_info *file_info;
4608 struct inode *inode;
4612 if (!(fp->daccess & FILE_READ_ATTRIBUTES_LE)) {
4613 pr_err("no right to read the attributes : 0x%x\n",
4618 file_info = (struct smb2_file_ntwrk_info *)rsp->Buffer;
4620 inode = file_inode(fp->filp);
4621 generic_fillattr(file_mnt_user_ns(fp->filp), inode, &stat);
4623 file_info->CreationTime = cpu_to_le64(fp->create_time);
4624 time = ksmbd_UnixTimeToNT(stat.atime);
4625 file_info->LastAccessTime = cpu_to_le64(time);
4626 time = ksmbd_UnixTimeToNT(stat.mtime);
4627 file_info->LastWriteTime = cpu_to_le64(time);
4628 time = ksmbd_UnixTimeToNT(stat.ctime);
4629 file_info->ChangeTime = cpu_to_le64(time);
4630 file_info->Attributes = fp->f_ci->m_fattr;
4631 file_info->AllocationSize =
4632 cpu_to_le64(get_allocation_size(inode, &stat));
4633 file_info->EndOfFile = S_ISDIR(stat.mode) ? 0 : cpu_to_le64(stat.size);
4634 file_info->Reserved = cpu_to_le32(0);
4635 rsp->OutputBufferLength =
4636 cpu_to_le32(sizeof(struct smb2_file_ntwrk_info));
4637 inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_ntwrk_info));
4641 static void get_file_ea_info(struct smb2_query_info_rsp *rsp, void *rsp_org)
4643 struct smb2_file_ea_info *file_info;
4645 file_info = (struct smb2_file_ea_info *)rsp->Buffer;
4646 file_info->EASize = 0;
4647 rsp->OutputBufferLength =
4648 cpu_to_le32(sizeof(struct smb2_file_ea_info));
4649 inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_ea_info));
4652 static void get_file_position_info(struct smb2_query_info_rsp *rsp,
4653 struct ksmbd_file *fp, void *rsp_org)
4655 struct smb2_file_pos_info *file_info;
4657 file_info = (struct smb2_file_pos_info *)rsp->Buffer;
4658 file_info->CurrentByteOffset = cpu_to_le64(fp->filp->f_pos);
4659 rsp->OutputBufferLength =
4660 cpu_to_le32(sizeof(struct smb2_file_pos_info));
4661 inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_pos_info));
4664 static void get_file_mode_info(struct smb2_query_info_rsp *rsp,
4665 struct ksmbd_file *fp, void *rsp_org)
4667 struct smb2_file_mode_info *file_info;
4669 file_info = (struct smb2_file_mode_info *)rsp->Buffer;
4670 file_info->Mode = fp->coption & FILE_MODE_INFO_MASK;
4671 rsp->OutputBufferLength =
4672 cpu_to_le32(sizeof(struct smb2_file_mode_info));
4673 inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_mode_info));
4676 static void get_file_compression_info(struct smb2_query_info_rsp *rsp,
4677 struct ksmbd_file *fp, void *rsp_org)
4679 struct smb2_file_comp_info *file_info;
4682 generic_fillattr(file_mnt_user_ns(fp->filp), file_inode(fp->filp),
4685 file_info = (struct smb2_file_comp_info *)rsp->Buffer;
4686 file_info->CompressedFileSize = cpu_to_le64(stat.blocks << 9);
4687 file_info->CompressionFormat = COMPRESSION_FORMAT_NONE;
4688 file_info->CompressionUnitShift = 0;
4689 file_info->ChunkShift = 0;
4690 file_info->ClusterShift = 0;
4691 memset(&file_info->Reserved[0], 0, 3);
4693 rsp->OutputBufferLength =
4694 cpu_to_le32(sizeof(struct smb2_file_comp_info));
4695 inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_comp_info));
4698 static int get_file_attribute_tag_info(struct smb2_query_info_rsp *rsp,
4699 struct ksmbd_file *fp, void *rsp_org)
4701 struct smb2_file_attr_tag_info *file_info;
4703 if (!(fp->daccess & FILE_READ_ATTRIBUTES_LE)) {
4704 pr_err("no right to read the attributes : 0x%x\n",
4709 file_info = (struct smb2_file_attr_tag_info *)rsp->Buffer;
4710 file_info->FileAttributes = fp->f_ci->m_fattr;
4711 file_info->ReparseTag = 0;
4712 rsp->OutputBufferLength =
4713 cpu_to_le32(sizeof(struct smb2_file_attr_tag_info));
4714 inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_attr_tag_info));
4718 static int find_file_posix_info(struct smb2_query_info_rsp *rsp,
4719 struct ksmbd_file *fp, void *rsp_org)
4721 struct smb311_posix_qinfo *file_info;
4722 struct inode *inode = file_inode(fp->filp);
4725 file_info = (struct smb311_posix_qinfo *)rsp->Buffer;
4726 file_info->CreationTime = cpu_to_le64(fp->create_time);
4727 time = ksmbd_UnixTimeToNT(inode->i_atime);
4728 file_info->LastAccessTime = cpu_to_le64(time);
4729 time = ksmbd_UnixTimeToNT(inode->i_mtime);
4730 file_info->LastWriteTime = cpu_to_le64(time);
4731 time = ksmbd_UnixTimeToNT(inode->i_ctime);
4732 file_info->ChangeTime = cpu_to_le64(time);
4733 file_info->DosAttributes = fp->f_ci->m_fattr;
4734 file_info->Inode = cpu_to_le64(inode->i_ino);
4735 file_info->EndOfFile = cpu_to_le64(inode->i_size);
4736 file_info->AllocationSize = cpu_to_le64(inode->i_blocks << 9);
4737 file_info->HardLinks = cpu_to_le32(inode->i_nlink);
4738 file_info->Mode = cpu_to_le32(inode->i_mode);
4739 file_info->DeviceId = cpu_to_le32(inode->i_rdev);
4740 rsp->OutputBufferLength =
4741 cpu_to_le32(sizeof(struct smb311_posix_qinfo));
4742 inc_rfc1001_len(rsp_org, sizeof(struct smb311_posix_qinfo));
4746 static int smb2_get_info_file(struct ksmbd_work *work,
4747 struct smb2_query_info_req *req,
4748 struct smb2_query_info_rsp *rsp)
4750 struct ksmbd_file *fp;
4751 int fileinfoclass = 0;
4753 int file_infoclass_size;
4754 unsigned int id = KSMBD_NO_FID, pid = KSMBD_NO_FID;
4756 if (test_share_config_flag(work->tcon->share_conf,
4757 KSMBD_SHARE_FLAG_PIPE)) {
4758 /* smb2 info file called for pipe */
4759 return smb2_get_info_file_pipe(work->sess, req, rsp,
4760 work->response_buf);
4763 if (work->next_smb2_rcv_hdr_off) {
4764 if (!has_file_id(req->VolatileFileId)) {
4765 ksmbd_debug(SMB, "Compound request set FID = %llu\n",
4766 work->compound_fid);
4767 id = work->compound_fid;
4768 pid = work->compound_pfid;
4772 if (!has_file_id(id)) {
4773 id = req->VolatileFileId;
4774 pid = req->PersistentFileId;
4777 fp = ksmbd_lookup_fd_slow(work, id, pid);
4781 fileinfoclass = req->FileInfoClass;
4783 switch (fileinfoclass) {
4784 case FILE_ACCESS_INFORMATION:
4785 get_file_access_info(rsp, fp, work->response_buf);
4786 file_infoclass_size = FILE_ACCESS_INFORMATION_SIZE;
4789 case FILE_BASIC_INFORMATION:
4790 rc = get_file_basic_info(rsp, fp, work->response_buf);
4791 file_infoclass_size = FILE_BASIC_INFORMATION_SIZE;
4794 case FILE_STANDARD_INFORMATION:
4795 get_file_standard_info(rsp, fp, work->response_buf);
4796 file_infoclass_size = FILE_STANDARD_INFORMATION_SIZE;
4799 case FILE_ALIGNMENT_INFORMATION:
4800 get_file_alignment_info(rsp, work->response_buf);
4801 file_infoclass_size = FILE_ALIGNMENT_INFORMATION_SIZE;
4804 case FILE_ALL_INFORMATION:
4805 rc = get_file_all_info(work, rsp, fp, work->response_buf);
4806 file_infoclass_size = FILE_ALL_INFORMATION_SIZE;
4809 case FILE_ALTERNATE_NAME_INFORMATION:
4810 get_file_alternate_info(work, rsp, fp, work->response_buf);
4811 file_infoclass_size = FILE_ALTERNATE_NAME_INFORMATION_SIZE;
4814 case FILE_STREAM_INFORMATION:
4815 get_file_stream_info(work, rsp, fp, work->response_buf);
4816 file_infoclass_size = FILE_STREAM_INFORMATION_SIZE;
4819 case FILE_INTERNAL_INFORMATION:
4820 get_file_internal_info(rsp, fp, work->response_buf);
4821 file_infoclass_size = FILE_INTERNAL_INFORMATION_SIZE;
4824 case FILE_NETWORK_OPEN_INFORMATION:
4825 rc = get_file_network_open_info(rsp, fp, work->response_buf);
4826 file_infoclass_size = FILE_NETWORK_OPEN_INFORMATION_SIZE;
4829 case FILE_EA_INFORMATION:
4830 get_file_ea_info(rsp, work->response_buf);
4831 file_infoclass_size = FILE_EA_INFORMATION_SIZE;
4834 case FILE_FULL_EA_INFORMATION:
4835 rc = smb2_get_ea(work, fp, req, rsp, work->response_buf);
4836 file_infoclass_size = FILE_FULL_EA_INFORMATION_SIZE;
4839 case FILE_POSITION_INFORMATION:
4840 get_file_position_info(rsp, fp, work->response_buf);
4841 file_infoclass_size = FILE_POSITION_INFORMATION_SIZE;
4844 case FILE_MODE_INFORMATION:
4845 get_file_mode_info(rsp, fp, work->response_buf);
4846 file_infoclass_size = FILE_MODE_INFORMATION_SIZE;
4849 case FILE_COMPRESSION_INFORMATION:
4850 get_file_compression_info(rsp, fp, work->response_buf);
4851 file_infoclass_size = FILE_COMPRESSION_INFORMATION_SIZE;
4854 case FILE_ATTRIBUTE_TAG_INFORMATION:
4855 rc = get_file_attribute_tag_info(rsp, fp, work->response_buf);
4856 file_infoclass_size = FILE_ATTRIBUTE_TAG_INFORMATION_SIZE;
4858 case SMB_FIND_FILE_POSIX_INFO:
4859 if (!work->tcon->posix_extensions) {
4860 pr_err("client doesn't negotiate with SMB3.1.1 POSIX Extensions\n");
4863 rc = find_file_posix_info(rsp, fp, work->response_buf);
4864 file_infoclass_size = sizeof(struct smb311_posix_qinfo);
4868 ksmbd_debug(SMB, "fileinfoclass %d not supported yet\n",
4873 rc = buffer_check_err(le32_to_cpu(req->OutputBufferLength),
4874 rsp, work->response_buf,
4875 file_infoclass_size);
4876 ksmbd_fd_put(work, fp);
4880 static int smb2_get_info_filesystem(struct ksmbd_work *work,
4881 struct smb2_query_info_req *req,
4882 struct smb2_query_info_rsp *rsp)
4884 struct ksmbd_session *sess = work->sess;
4885 struct ksmbd_conn *conn = work->conn;
4886 struct ksmbd_share_config *share = work->tcon->share_conf;
4887 int fsinfoclass = 0;
4888 struct kstatfs stfs;
4891 int fs_infoclass_size = 0;
4893 rc = kern_path(share->path, LOOKUP_NO_SYMLINKS, &path);
4895 pr_err("cannot create vfs path\n");
4899 rc = vfs_statfs(&path, &stfs);
4901 pr_err("cannot do stat of path %s\n", share->path);
4906 fsinfoclass = req->FileInfoClass;
4908 switch (fsinfoclass) {
4909 case FS_DEVICE_INFORMATION:
4911 struct filesystem_device_info *info;
4913 info = (struct filesystem_device_info *)rsp->Buffer;
4915 info->DeviceType = cpu_to_le32(stfs.f_type);
4916 info->DeviceCharacteristics = cpu_to_le32(0x00000020);
4917 rsp->OutputBufferLength = cpu_to_le32(8);
4918 inc_rfc1001_len(work->response_buf, 8);
4919 fs_infoclass_size = FS_DEVICE_INFORMATION_SIZE;
4922 case FS_ATTRIBUTE_INFORMATION:
4924 struct filesystem_attribute_info *info;
4927 info = (struct filesystem_attribute_info *)rsp->Buffer;
4928 info->Attributes = cpu_to_le32(FILE_SUPPORTS_OBJECT_IDS |
4929 FILE_PERSISTENT_ACLS |
4930 FILE_UNICODE_ON_DISK |
4931 FILE_CASE_PRESERVED_NAMES |
4932 FILE_CASE_SENSITIVE_SEARCH |
4933 FILE_SUPPORTS_BLOCK_REFCOUNTING);
4935 info->Attributes |= cpu_to_le32(server_conf.share_fake_fscaps);
4937 info->MaxPathNameComponentLength = cpu_to_le32(stfs.f_namelen);
4938 len = smbConvertToUTF16((__le16 *)info->FileSystemName,
4939 "NTFS", PATH_MAX, conn->local_nls, 0);
4941 info->FileSystemNameLen = cpu_to_le32(len);
4942 sz = sizeof(struct filesystem_attribute_info) - 2 + len;
4943 rsp->OutputBufferLength = cpu_to_le32(sz);
4944 inc_rfc1001_len(work->response_buf, sz);
4945 fs_infoclass_size = FS_ATTRIBUTE_INFORMATION_SIZE;
4948 case FS_VOLUME_INFORMATION:
4950 struct filesystem_vol_info *info;
4952 unsigned int serial_crc = 0;
4954 info = (struct filesystem_vol_info *)(rsp->Buffer);
4955 info->VolumeCreationTime = 0;
4956 serial_crc = crc32_le(serial_crc, share->name,
4957 strlen(share->name));
4958 serial_crc = crc32_le(serial_crc, share->path,
4959 strlen(share->path));
4960 serial_crc = crc32_le(serial_crc, ksmbd_netbios_name(),
4961 strlen(ksmbd_netbios_name()));
4962 /* Taking dummy value of serial number*/
4963 info->SerialNumber = cpu_to_le32(serial_crc);
4964 len = smbConvertToUTF16((__le16 *)info->VolumeLabel,
4965 share->name, PATH_MAX,
4966 conn->local_nls, 0);
4968 info->VolumeLabelSize = cpu_to_le32(len);
4970 sz = sizeof(struct filesystem_vol_info) - 2 + len;
4971 rsp->OutputBufferLength = cpu_to_le32(sz);
4972 inc_rfc1001_len(work->response_buf, sz);
4973 fs_infoclass_size = FS_VOLUME_INFORMATION_SIZE;
4976 case FS_SIZE_INFORMATION:
4978 struct filesystem_info *info;
4980 info = (struct filesystem_info *)(rsp->Buffer);
4981 info->TotalAllocationUnits = cpu_to_le64(stfs.f_blocks);
4982 info->FreeAllocationUnits = cpu_to_le64(stfs.f_bfree);
4983 info->SectorsPerAllocationUnit = cpu_to_le32(1);
4984 info->BytesPerSector = cpu_to_le32(stfs.f_bsize);
4985 rsp->OutputBufferLength = cpu_to_le32(24);
4986 inc_rfc1001_len(work->response_buf, 24);
4987 fs_infoclass_size = FS_SIZE_INFORMATION_SIZE;
4990 case FS_FULL_SIZE_INFORMATION:
4992 struct smb2_fs_full_size_info *info;
4994 info = (struct smb2_fs_full_size_info *)(rsp->Buffer);
4995 info->TotalAllocationUnits = cpu_to_le64(stfs.f_blocks);
4996 info->CallerAvailableAllocationUnits =
4997 cpu_to_le64(stfs.f_bavail);
4998 info->ActualAvailableAllocationUnits =
4999 cpu_to_le64(stfs.f_bfree);
5000 info->SectorsPerAllocationUnit = cpu_to_le32(1);
5001 info->BytesPerSector = cpu_to_le32(stfs.f_bsize);
5002 rsp->OutputBufferLength = cpu_to_le32(32);
5003 inc_rfc1001_len(work->response_buf, 32);
5004 fs_infoclass_size = FS_FULL_SIZE_INFORMATION_SIZE;
5007 case FS_OBJECT_ID_INFORMATION:
5009 struct object_id_info *info;
5011 info = (struct object_id_info *)(rsp->Buffer);
5013 if (!user_guest(sess->user))
5014 memcpy(info->objid, user_passkey(sess->user), 16);
5016 memset(info->objid, 0, 16);
5018 info->extended_info.magic = cpu_to_le32(EXTENDED_INFO_MAGIC);
5019 info->extended_info.version = cpu_to_le32(1);
5020 info->extended_info.release = cpu_to_le32(1);
5021 info->extended_info.rel_date = 0;
5022 memcpy(info->extended_info.version_string, "1.1.0", strlen("1.1.0"));
5023 rsp->OutputBufferLength = cpu_to_le32(64);
5024 inc_rfc1001_len(work->response_buf, 64);
5025 fs_infoclass_size = FS_OBJECT_ID_INFORMATION_SIZE;
5028 case FS_SECTOR_SIZE_INFORMATION:
5030 struct smb3_fs_ss_info *info;
5031 unsigned int sector_size =
5032 min_t(unsigned int, path.mnt->mnt_sb->s_blocksize, 4096);
5034 info = (struct smb3_fs_ss_info *)(rsp->Buffer);
5036 info->LogicalBytesPerSector = cpu_to_le32(sector_size);
5037 info->PhysicalBytesPerSectorForAtomicity =
5038 cpu_to_le32(sector_size);
5039 info->PhysicalBytesPerSectorForPerf = cpu_to_le32(sector_size);
5040 info->FSEffPhysicalBytesPerSectorForAtomicity =
5041 cpu_to_le32(sector_size);
5042 info->Flags = cpu_to_le32(SSINFO_FLAGS_ALIGNED_DEVICE |
5043 SSINFO_FLAGS_PARTITION_ALIGNED_ON_DEVICE);
5044 info->ByteOffsetForSectorAlignment = 0;
5045 info->ByteOffsetForPartitionAlignment = 0;
5046 rsp->OutputBufferLength = cpu_to_le32(28);
5047 inc_rfc1001_len(work->response_buf, 28);
5048 fs_infoclass_size = FS_SECTOR_SIZE_INFORMATION_SIZE;
5051 case FS_CONTROL_INFORMATION:
5054 * TODO : The current implementation is based on
5055 * test result with win7(NTFS) server. It's need to
5056 * modify this to get valid Quota values
5059 struct smb2_fs_control_info *info;
5061 info = (struct smb2_fs_control_info *)(rsp->Buffer);
5062 info->FreeSpaceStartFiltering = 0;
5063 info->FreeSpaceThreshold = 0;
5064 info->FreeSpaceStopFiltering = 0;
5065 info->DefaultQuotaThreshold = cpu_to_le64(SMB2_NO_FID);
5066 info->DefaultQuotaLimit = cpu_to_le64(SMB2_NO_FID);
5068 rsp->OutputBufferLength = cpu_to_le32(48);
5069 inc_rfc1001_len(work->response_buf, 48);
5070 fs_infoclass_size = FS_CONTROL_INFORMATION_SIZE;
5073 case FS_POSIX_INFORMATION:
5075 struct filesystem_posix_info *info;
5077 if (!work->tcon->posix_extensions) {
5078 pr_err("client doesn't negotiate with SMB3.1.1 POSIX Extensions\n");
5081 info = (struct filesystem_posix_info *)(rsp->Buffer);
5082 info->OptimalTransferSize = cpu_to_le32(stfs.f_bsize);
5083 info->BlockSize = cpu_to_le32(stfs.f_bsize);
5084 info->TotalBlocks = cpu_to_le64(stfs.f_blocks);
5085 info->BlocksAvail = cpu_to_le64(stfs.f_bfree);
5086 info->UserBlocksAvail = cpu_to_le64(stfs.f_bavail);
5087 info->TotalFileNodes = cpu_to_le64(stfs.f_files);
5088 info->FreeFileNodes = cpu_to_le64(stfs.f_ffree);
5089 rsp->OutputBufferLength = cpu_to_le32(56);
5090 inc_rfc1001_len(work->response_buf, 56);
5091 fs_infoclass_size = FS_POSIX_INFORMATION_SIZE;
5099 rc = buffer_check_err(le32_to_cpu(req->OutputBufferLength),
5100 rsp, work->response_buf,
5106 static int smb2_get_info_sec(struct ksmbd_work *work,
5107 struct smb2_query_info_req *req,
5108 struct smb2_query_info_rsp *rsp)
5110 struct ksmbd_file *fp;
5111 struct user_namespace *user_ns;
5112 struct smb_ntsd *pntsd = (struct smb_ntsd *)rsp->Buffer, *ppntsd = NULL;
5113 struct smb_fattr fattr = {{0}};
5114 struct inode *inode;
5115 __u32 secdesclen = 0;
5116 unsigned int id = KSMBD_NO_FID, pid = KSMBD_NO_FID;
5117 int addition_info = le32_to_cpu(req->AdditionalInformation);
5118 int rc = 0, ppntsd_size = 0;
5120 if (addition_info & ~(OWNER_SECINFO | GROUP_SECINFO | DACL_SECINFO |
5121 PROTECTED_DACL_SECINFO |
5122 UNPROTECTED_DACL_SECINFO)) {
5123 ksmbd_debug(SMB, "Unsupported addition info: 0x%x)\n",
5126 pntsd->revision = cpu_to_le16(1);
5127 pntsd->type = cpu_to_le16(SELF_RELATIVE | DACL_PROTECTED);
5128 pntsd->osidoffset = 0;
5129 pntsd->gsidoffset = 0;
5130 pntsd->sacloffset = 0;
5131 pntsd->dacloffset = 0;
5133 secdesclen = sizeof(struct smb_ntsd);
5134 rsp->OutputBufferLength = cpu_to_le32(secdesclen);
5135 inc_rfc1001_len(work->response_buf, secdesclen);
5140 if (work->next_smb2_rcv_hdr_off) {
5141 if (!has_file_id(req->VolatileFileId)) {
5142 ksmbd_debug(SMB, "Compound request set FID = %llu\n",
5143 work->compound_fid);
5144 id = work->compound_fid;
5145 pid = work->compound_pfid;
5149 if (!has_file_id(id)) {
5150 id = req->VolatileFileId;
5151 pid = req->PersistentFileId;
5154 fp = ksmbd_lookup_fd_slow(work, id, pid);
5158 user_ns = file_mnt_user_ns(fp->filp);
5159 inode = file_inode(fp->filp);
5160 ksmbd_acls_fattr(&fattr, user_ns, inode);
5162 if (test_share_config_flag(work->tcon->share_conf,
5163 KSMBD_SHARE_FLAG_ACL_XATTR))
5164 ppntsd_size = ksmbd_vfs_get_sd_xattr(work->conn, user_ns,
5165 fp->filp->f_path.dentry,
5168 /* Check if sd buffer size exceeds response buffer size */
5169 if (smb2_resp_buf_len(work, 8) > ppntsd_size)
5170 rc = build_sec_desc(user_ns, pntsd, ppntsd, ppntsd_size,
5171 addition_info, &secdesclen, &fattr);
5172 posix_acl_release(fattr.cf_acls);
5173 posix_acl_release(fattr.cf_dacls);
5175 ksmbd_fd_put(work, fp);
5179 rsp->OutputBufferLength = cpu_to_le32(secdesclen);
5180 inc_rfc1001_len(work->response_buf, secdesclen);
5185 * smb2_query_info() - handler for smb2 query info command
5186 * @work: smb work containing query info request buffer
5188 * Return: 0 on success, otherwise error
5190 int smb2_query_info(struct ksmbd_work *work)
5192 struct smb2_query_info_req *req;
5193 struct smb2_query_info_rsp *rsp;
5196 WORK_BUFFERS(work, req, rsp);
5198 ksmbd_debug(SMB, "GOT query info request\n");
5200 switch (req->InfoType) {
5201 case SMB2_O_INFO_FILE:
5202 ksmbd_debug(SMB, "GOT SMB2_O_INFO_FILE\n");
5203 rc = smb2_get_info_file(work, req, rsp);
5205 case SMB2_O_INFO_FILESYSTEM:
5206 ksmbd_debug(SMB, "GOT SMB2_O_INFO_FILESYSTEM\n");
5207 rc = smb2_get_info_filesystem(work, req, rsp);
5209 case SMB2_O_INFO_SECURITY:
5210 ksmbd_debug(SMB, "GOT SMB2_O_INFO_SECURITY\n");
5211 rc = smb2_get_info_sec(work, req, rsp);
5214 ksmbd_debug(SMB, "InfoType %d not supported yet\n",
5221 rsp->hdr.Status = STATUS_ACCESS_DENIED;
5222 else if (rc == -ENOENT)
5223 rsp->hdr.Status = STATUS_FILE_CLOSED;
5224 else if (rc == -EIO)
5225 rsp->hdr.Status = STATUS_UNEXPECTED_IO_ERROR;
5226 else if (rc == -EOPNOTSUPP || rsp->hdr.Status == 0)
5227 rsp->hdr.Status = STATUS_INVALID_INFO_CLASS;
5228 smb2_set_err_rsp(work);
5230 ksmbd_debug(SMB, "error while processing smb2 query rc = %d\n",
5234 rsp->StructureSize = cpu_to_le16(9);
5235 rsp->OutputBufferOffset = cpu_to_le16(72);
5236 inc_rfc1001_len(work->response_buf, 8);
5241 * smb2_close_pipe() - handler for closing IPC pipe
5242 * @work: smb work containing close request buffer
5246 static noinline int smb2_close_pipe(struct ksmbd_work *work)
5249 struct smb2_close_req *req = smb2_get_msg(work->request_buf);
5250 struct smb2_close_rsp *rsp = smb2_get_msg(work->response_buf);
5252 id = req->VolatileFileId;
5253 ksmbd_session_rpc_close(work->sess, id);
5255 rsp->StructureSize = cpu_to_le16(60);
5258 rsp->CreationTime = 0;
5259 rsp->LastAccessTime = 0;
5260 rsp->LastWriteTime = 0;
5261 rsp->ChangeTime = 0;
5262 rsp->AllocationSize = 0;
5264 rsp->Attributes = 0;
5265 inc_rfc1001_len(work->response_buf, 60);
5270 * smb2_close() - handler for smb2 close file command
5271 * @work: smb work containing close request buffer
5275 int smb2_close(struct ksmbd_work *work)
5277 u64 volatile_id = KSMBD_NO_FID;
5279 struct smb2_close_req *req;
5280 struct smb2_close_rsp *rsp;
5281 struct ksmbd_conn *conn = work->conn;
5282 struct ksmbd_file *fp;
5283 struct inode *inode;
5287 WORK_BUFFERS(work, req, rsp);
5289 if (test_share_config_flag(work->tcon->share_conf,
5290 KSMBD_SHARE_FLAG_PIPE)) {
5291 ksmbd_debug(SMB, "IPC pipe close request\n");
5292 return smb2_close_pipe(work);
5295 sess_id = le64_to_cpu(req->hdr.SessionId);
5296 if (req->hdr.Flags & SMB2_FLAGS_RELATED_OPERATIONS)
5297 sess_id = work->compound_sid;
5299 work->compound_sid = 0;
5300 if (check_session_id(conn, sess_id)) {
5301 work->compound_sid = sess_id;
5303 rsp->hdr.Status = STATUS_USER_SESSION_DELETED;
5304 if (req->hdr.Flags & SMB2_FLAGS_RELATED_OPERATIONS)
5305 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
5310 if (work->next_smb2_rcv_hdr_off &&
5311 !has_file_id(req->VolatileFileId)) {
5312 if (!has_file_id(work->compound_fid)) {
5313 /* file already closed, return FILE_CLOSED */
5314 ksmbd_debug(SMB, "file already closed\n");
5315 rsp->hdr.Status = STATUS_FILE_CLOSED;
5320 "Compound request set FID = %llu:%llu\n",
5322 work->compound_pfid);
5323 volatile_id = work->compound_fid;
5325 /* file closed, stored id is not valid anymore */
5326 work->compound_fid = KSMBD_NO_FID;
5327 work->compound_pfid = KSMBD_NO_FID;
5330 volatile_id = req->VolatileFileId;
5332 ksmbd_debug(SMB, "volatile_id = %llu\n", volatile_id);
5334 rsp->StructureSize = cpu_to_le16(60);
5337 if (req->Flags == SMB2_CLOSE_FLAG_POSTQUERY_ATTRIB) {
5338 fp = ksmbd_lookup_fd_fast(work, volatile_id);
5344 inode = file_inode(fp->filp);
5345 rsp->Flags = SMB2_CLOSE_FLAG_POSTQUERY_ATTRIB;
5346 rsp->AllocationSize = S_ISDIR(inode->i_mode) ? 0 :
5347 cpu_to_le64(inode->i_blocks << 9);
5348 rsp->EndOfFile = cpu_to_le64(inode->i_size);
5349 rsp->Attributes = fp->f_ci->m_fattr;
5350 rsp->CreationTime = cpu_to_le64(fp->create_time);
5351 time = ksmbd_UnixTimeToNT(inode->i_atime);
5352 rsp->LastAccessTime = cpu_to_le64(time);
5353 time = ksmbd_UnixTimeToNT(inode->i_mtime);
5354 rsp->LastWriteTime = cpu_to_le64(time);
5355 time = ksmbd_UnixTimeToNT(inode->i_ctime);
5356 rsp->ChangeTime = cpu_to_le64(time);
5357 ksmbd_fd_put(work, fp);
5360 rsp->AllocationSize = 0;
5362 rsp->Attributes = 0;
5363 rsp->CreationTime = 0;
5364 rsp->LastAccessTime = 0;
5365 rsp->LastWriteTime = 0;
5366 rsp->ChangeTime = 0;
5369 err = ksmbd_close_fd(work, volatile_id);
5372 if (rsp->hdr.Status == 0)
5373 rsp->hdr.Status = STATUS_FILE_CLOSED;
5374 smb2_set_err_rsp(work);
5376 inc_rfc1001_len(work->response_buf, 60);
5383 * smb2_echo() - handler for smb2 echo(ping) command
5384 * @work: smb work containing echo request buffer
5388 int smb2_echo(struct ksmbd_work *work)
5390 struct smb2_echo_rsp *rsp = smb2_get_msg(work->response_buf);
5392 rsp->StructureSize = cpu_to_le16(4);
5394 inc_rfc1001_len(work->response_buf, 4);
5398 static int smb2_rename(struct ksmbd_work *work,
5399 struct ksmbd_file *fp,
5400 struct user_namespace *user_ns,
5401 struct smb2_file_rename_info *file_info,
5402 struct nls_table *local_nls)
5404 struct ksmbd_share_config *share = fp->tcon->share_conf;
5405 char *new_name = NULL, *abs_oldname = NULL, *old_name = NULL;
5406 char *pathname = NULL;
5408 bool file_present = true;
5411 ksmbd_debug(SMB, "setting FILE_RENAME_INFO\n");
5412 pathname = kmalloc(PATH_MAX, GFP_KERNEL);
5416 abs_oldname = d_path(&fp->filp->f_path, pathname, PATH_MAX);
5417 if (IS_ERR(abs_oldname)) {
5421 old_name = strrchr(abs_oldname, '/');
5422 if (old_name && old_name[1] != '\0') {
5425 ksmbd_debug(SMB, "can't get last component in path %s\n",
5431 new_name = smb2_get_name(file_info->FileName,
5432 le32_to_cpu(file_info->FileNameLength),
5434 if (IS_ERR(new_name)) {
5435 rc = PTR_ERR(new_name);
5439 if (strchr(new_name, ':')) {
5441 char *xattr_stream_name, *stream_name = NULL;
5442 size_t xattr_stream_size;
5445 rc = parse_stream_name(new_name, &stream_name, &s_type);
5449 len = strlen(new_name);
5450 if (len > 0 && new_name[len - 1] != '/') {
5451 pr_err("not allow base filename in rename\n");
5456 rc = ksmbd_vfs_xattr_stream_name(stream_name,
5463 rc = ksmbd_vfs_setxattr(user_ns,
5464 fp->filp->f_path.dentry,
5468 pr_err("failed to store stream name in xattr: %d\n",
5477 ksmbd_debug(SMB, "new name %s\n", new_name);
5478 rc = ksmbd_vfs_kern_path(work, new_name, LOOKUP_NO_SYMLINKS, &path, 1);
5482 file_present = false;
5487 if (ksmbd_share_veto_filename(share, new_name)) {
5489 ksmbd_debug(SMB, "Can't rename vetoed file: %s\n", new_name);
5493 if (file_info->ReplaceIfExists) {
5495 rc = ksmbd_vfs_remove_file(work, new_name);
5497 if (rc != -ENOTEMPTY)
5499 ksmbd_debug(SMB, "cannot delete %s, rc %d\n",
5506 strncmp(old_name, path.dentry->d_name.name, strlen(old_name))) {
5509 "cannot rename already existing file\n");
5514 rc = ksmbd_vfs_fp_rename(work, fp, new_name);
5517 if (!IS_ERR(new_name))
5522 static int smb2_create_link(struct ksmbd_work *work,
5523 struct ksmbd_share_config *share,
5524 struct smb2_file_link_info *file_info,
5525 unsigned int buf_len, struct file *filp,
5526 struct nls_table *local_nls)
5528 char *link_name = NULL, *target_name = NULL, *pathname = NULL;
5530 bool file_present = true;
5533 if (buf_len < (u64)sizeof(struct smb2_file_link_info) +
5534 le32_to_cpu(file_info->FileNameLength))
5537 ksmbd_debug(SMB, "setting FILE_LINK_INFORMATION\n");
5538 pathname = kmalloc(PATH_MAX, GFP_KERNEL);
5542 link_name = smb2_get_name(file_info->FileName,
5543 le32_to_cpu(file_info->FileNameLength),
5545 if (IS_ERR(link_name) || S_ISDIR(file_inode(filp)->i_mode)) {
5550 ksmbd_debug(SMB, "link name is %s\n", link_name);
5551 target_name = d_path(&filp->f_path, pathname, PATH_MAX);
5552 if (IS_ERR(target_name)) {
5557 ksmbd_debug(SMB, "target name is %s\n", target_name);
5558 rc = ksmbd_vfs_kern_path(work, link_name, LOOKUP_NO_SYMLINKS, &path, 0);
5562 file_present = false;
5567 if (file_info->ReplaceIfExists) {
5569 rc = ksmbd_vfs_remove_file(work, link_name);
5572 ksmbd_debug(SMB, "cannot delete %s\n",
5580 ksmbd_debug(SMB, "link already exists\n");
5585 rc = ksmbd_vfs_link(work, target_name, link_name);
5589 if (!IS_ERR(link_name))
5595 static int set_file_basic_info(struct ksmbd_file *fp,
5596 struct smb2_file_basic_info *file_info,
5597 struct ksmbd_share_config *share)
5601 struct inode *inode;
5602 struct user_namespace *user_ns;
5605 if (!(fp->daccess & FILE_WRITE_ATTRIBUTES_LE))
5610 inode = file_inode(filp);
5611 user_ns = file_mnt_user_ns(filp);
5613 if (file_info->CreationTime)
5614 fp->create_time = le64_to_cpu(file_info->CreationTime);
5616 if (file_info->LastAccessTime) {
5617 attrs.ia_atime = ksmbd_NTtimeToUnix(file_info->LastAccessTime);
5618 attrs.ia_valid |= (ATTR_ATIME | ATTR_ATIME_SET);
5621 attrs.ia_valid |= ATTR_CTIME;
5622 if (file_info->ChangeTime)
5623 attrs.ia_ctime = ksmbd_NTtimeToUnix(file_info->ChangeTime);
5625 attrs.ia_ctime = inode->i_ctime;
5627 if (file_info->LastWriteTime) {
5628 attrs.ia_mtime = ksmbd_NTtimeToUnix(file_info->LastWriteTime);
5629 attrs.ia_valid |= (ATTR_MTIME | ATTR_MTIME_SET);
5632 if (file_info->Attributes) {
5633 if (!S_ISDIR(inode->i_mode) &&
5634 file_info->Attributes & FILE_ATTRIBUTE_DIRECTORY_LE) {
5635 pr_err("can't change a file to a directory\n");
5639 if (!(S_ISDIR(inode->i_mode) && file_info->Attributes == FILE_ATTRIBUTE_NORMAL_LE))
5640 fp->f_ci->m_fattr = file_info->Attributes |
5641 (fp->f_ci->m_fattr & FILE_ATTRIBUTE_DIRECTORY_LE);
5644 if (test_share_config_flag(share, KSMBD_SHARE_FLAG_STORE_DOS_ATTRS) &&
5645 (file_info->CreationTime || file_info->Attributes)) {
5646 struct xattr_dos_attrib da = {0};
5649 da.itime = fp->itime;
5650 da.create_time = fp->create_time;
5651 da.attr = le32_to_cpu(fp->f_ci->m_fattr);
5652 da.flags = XATTR_DOSINFO_ATTRIB | XATTR_DOSINFO_CREATE_TIME |
5653 XATTR_DOSINFO_ITIME;
5655 rc = ksmbd_vfs_set_dos_attrib_xattr(user_ns,
5656 filp->f_path.dentry, &da);
5659 "failed to restore file attribute in EA\n");
5663 if (attrs.ia_valid) {
5664 struct dentry *dentry = filp->f_path.dentry;
5665 struct inode *inode = d_inode(dentry);
5667 if (IS_IMMUTABLE(inode) || IS_APPEND(inode))
5671 inode->i_ctime = attrs.ia_ctime;
5672 attrs.ia_valid &= ~ATTR_CTIME;
5673 rc = notify_change(user_ns, dentry, &attrs, NULL);
5674 inode_unlock(inode);
5679 static int set_file_allocation_info(struct ksmbd_work *work,
5680 struct ksmbd_file *fp,
5681 struct smb2_file_alloc_info *file_alloc_info)
5684 * TODO : It's working fine only when store dos attributes
5685 * is not yes. need to implement a logic which works
5686 * properly with any smb.conf option
5690 struct inode *inode;
5693 if (!(fp->daccess & FILE_WRITE_DATA_LE))
5696 alloc_blks = (le64_to_cpu(file_alloc_info->AllocationSize) + 511) >> 9;
5697 inode = file_inode(fp->filp);
5699 if (alloc_blks > inode->i_blocks) {
5700 smb_break_all_levII_oplock(work, fp, 1);
5701 rc = vfs_fallocate(fp->filp, FALLOC_FL_KEEP_SIZE, 0,
5703 if (rc && rc != -EOPNOTSUPP) {
5704 pr_err("vfs_fallocate is failed : %d\n", rc);
5707 } else if (alloc_blks < inode->i_blocks) {
5711 * Allocation size could be smaller than original one
5712 * which means allocated blocks in file should be
5713 * deallocated. use truncate to cut out it, but inode
5714 * size is also updated with truncate offset.
5715 * inode size is retained by backup inode size.
5717 size = i_size_read(inode);
5718 rc = ksmbd_vfs_truncate(work, fp, alloc_blks * 512);
5720 pr_err("truncate failed!, err %d\n", rc);
5723 if (size < alloc_blks * 512)
5724 i_size_write(inode, size);
5729 static int set_end_of_file_info(struct ksmbd_work *work, struct ksmbd_file *fp,
5730 struct smb2_file_eof_info *file_eof_info)
5733 struct inode *inode;
5736 if (!(fp->daccess & FILE_WRITE_DATA_LE))
5739 newsize = le64_to_cpu(file_eof_info->EndOfFile);
5740 inode = file_inode(fp->filp);
5743 * If FILE_END_OF_FILE_INFORMATION of set_info_file is called
5744 * on FAT32 shared device, truncate execution time is too long
5745 * and network error could cause from windows client. because
5746 * truncate of some filesystem like FAT32 fill zero data in
5749 if (inode->i_sb->s_magic != MSDOS_SUPER_MAGIC) {
5750 ksmbd_debug(SMB, "truncated to newsize %lld\n", newsize);
5751 rc = ksmbd_vfs_truncate(work, fp, newsize);
5753 ksmbd_debug(SMB, "truncate failed!, err %d\n", rc);
5762 static int set_rename_info(struct ksmbd_work *work, struct ksmbd_file *fp,
5763 struct smb2_file_rename_info *rename_info,
5764 unsigned int buf_len)
5766 struct user_namespace *user_ns;
5767 struct ksmbd_file *parent_fp;
5768 struct dentry *parent;
5769 struct dentry *dentry = fp->filp->f_path.dentry;
5772 if (!(fp->daccess & FILE_DELETE_LE)) {
5773 pr_err("no right to delete : 0x%x\n", fp->daccess);
5777 if (buf_len < (u64)sizeof(struct smb2_file_rename_info) +
5778 le32_to_cpu(rename_info->FileNameLength))
5781 user_ns = file_mnt_user_ns(fp->filp);
5782 if (ksmbd_stream_fd(fp))
5785 parent = dget_parent(dentry);
5786 ret = ksmbd_vfs_lock_parent(user_ns, parent, dentry);
5792 parent_fp = ksmbd_lookup_fd_inode(d_inode(parent));
5793 inode_unlock(d_inode(parent));
5797 if (parent_fp->daccess & FILE_DELETE_LE) {
5798 pr_err("parent dir is opened with delete access\n");
5799 ksmbd_fd_put(work, parent_fp);
5802 ksmbd_fd_put(work, parent_fp);
5805 return smb2_rename(work, fp, user_ns, rename_info,
5806 work->conn->local_nls);
5809 static int set_file_disposition_info(struct ksmbd_file *fp,
5810 struct smb2_file_disposition_info *file_info)
5812 struct inode *inode;
5814 if (!(fp->daccess & FILE_DELETE_LE)) {
5815 pr_err("no right to delete : 0x%x\n", fp->daccess);
5819 inode = file_inode(fp->filp);
5820 if (file_info->DeletePending) {
5821 if (S_ISDIR(inode->i_mode) &&
5822 ksmbd_vfs_empty_dir(fp) == -ENOTEMPTY)
5824 ksmbd_set_inode_pending_delete(fp);
5826 ksmbd_clear_inode_pending_delete(fp);
5831 static int set_file_position_info(struct ksmbd_file *fp,
5832 struct smb2_file_pos_info *file_info)
5834 loff_t current_byte_offset;
5835 unsigned long sector_size;
5836 struct inode *inode;
5838 inode = file_inode(fp->filp);
5839 current_byte_offset = le64_to_cpu(file_info->CurrentByteOffset);
5840 sector_size = inode->i_sb->s_blocksize;
5842 if (current_byte_offset < 0 ||
5843 (fp->coption == FILE_NO_INTERMEDIATE_BUFFERING_LE &&
5844 current_byte_offset & (sector_size - 1))) {
5845 pr_err("CurrentByteOffset is not valid : %llu\n",
5846 current_byte_offset);
5850 fp->filp->f_pos = current_byte_offset;
5854 static int set_file_mode_info(struct ksmbd_file *fp,
5855 struct smb2_file_mode_info *file_info)
5859 mode = file_info->Mode;
5861 if ((mode & ~FILE_MODE_INFO_MASK)) {
5862 pr_err("Mode is not valid : 0x%x\n", le32_to_cpu(mode));
5867 * TODO : need to implement consideration for
5868 * FILE_SYNCHRONOUS_IO_ALERT and FILE_SYNCHRONOUS_IO_NONALERT
5870 ksmbd_vfs_set_fadvise(fp->filp, mode);
5876 * smb2_set_info_file() - handler for smb2 set info command
5877 * @work: smb work containing set info command buffer
5878 * @fp: ksmbd_file pointer
5879 * @req: request buffer pointer
5880 * @share: ksmbd_share_config pointer
5882 * Return: 0 on success, otherwise error
5883 * TODO: need to implement an error handling for STATUS_INFO_LENGTH_MISMATCH
5885 static int smb2_set_info_file(struct ksmbd_work *work, struct ksmbd_file *fp,
5886 struct smb2_set_info_req *req,
5887 struct ksmbd_share_config *share)
5889 unsigned int buf_len = le32_to_cpu(req->BufferLength);
5891 switch (req->FileInfoClass) {
5892 case FILE_BASIC_INFORMATION:
5894 if (buf_len < sizeof(struct smb2_file_basic_info))
5897 return set_file_basic_info(fp, (struct smb2_file_basic_info *)req->Buffer, share);
5899 case FILE_ALLOCATION_INFORMATION:
5901 if (buf_len < sizeof(struct smb2_file_alloc_info))
5904 return set_file_allocation_info(work, fp,
5905 (struct smb2_file_alloc_info *)req->Buffer);
5907 case FILE_END_OF_FILE_INFORMATION:
5909 if (buf_len < sizeof(struct smb2_file_eof_info))
5912 return set_end_of_file_info(work, fp,
5913 (struct smb2_file_eof_info *)req->Buffer);
5915 case FILE_RENAME_INFORMATION:
5917 if (!test_tree_conn_flag(work->tcon, KSMBD_TREE_CONN_FLAG_WRITABLE)) {
5919 "User does not have write permission\n");
5923 if (buf_len < sizeof(struct smb2_file_rename_info))
5926 return set_rename_info(work, fp,
5927 (struct smb2_file_rename_info *)req->Buffer,
5930 case FILE_LINK_INFORMATION:
5932 if (buf_len < sizeof(struct smb2_file_link_info))
5935 return smb2_create_link(work, work->tcon->share_conf,
5936 (struct smb2_file_link_info *)req->Buffer,
5938 work->conn->local_nls);
5940 case FILE_DISPOSITION_INFORMATION:
5942 if (!test_tree_conn_flag(work->tcon, KSMBD_TREE_CONN_FLAG_WRITABLE)) {
5944 "User does not have write permission\n");
5948 if (buf_len < sizeof(struct smb2_file_disposition_info))
5951 return set_file_disposition_info(fp,
5952 (struct smb2_file_disposition_info *)req->Buffer);
5954 case FILE_FULL_EA_INFORMATION:
5956 if (!(fp->daccess & FILE_WRITE_EA_LE)) {
5957 pr_err("Not permitted to write ext attr: 0x%x\n",
5962 if (buf_len < sizeof(struct smb2_ea_info))
5965 return smb2_set_ea((struct smb2_ea_info *)req->Buffer,
5966 buf_len, &fp->filp->f_path);
5968 case FILE_POSITION_INFORMATION:
5970 if (buf_len < sizeof(struct smb2_file_pos_info))
5973 return set_file_position_info(fp, (struct smb2_file_pos_info *)req->Buffer);
5975 case FILE_MODE_INFORMATION:
5977 if (buf_len < sizeof(struct smb2_file_mode_info))
5980 return set_file_mode_info(fp, (struct smb2_file_mode_info *)req->Buffer);
5984 pr_err("Unimplemented Fileinfoclass :%d\n", req->FileInfoClass);
5988 static int smb2_set_info_sec(struct ksmbd_file *fp, int addition_info,
5989 char *buffer, int buf_len)
5991 struct smb_ntsd *pntsd = (struct smb_ntsd *)buffer;
5993 fp->saccess |= FILE_SHARE_DELETE_LE;
5995 return set_info_sec(fp->conn, fp->tcon, &fp->filp->f_path, pntsd,
6000 * smb2_set_info() - handler for smb2 set info command handler
6001 * @work: smb work containing set info request buffer
6003 * Return: 0 on success, otherwise error
6005 int smb2_set_info(struct ksmbd_work *work)
6007 struct smb2_set_info_req *req;
6008 struct smb2_set_info_rsp *rsp;
6009 struct ksmbd_file *fp;
6011 unsigned int id = KSMBD_NO_FID, pid = KSMBD_NO_FID;
6013 ksmbd_debug(SMB, "Received set info request\n");
6015 if (work->next_smb2_rcv_hdr_off) {
6016 req = ksmbd_req_buf_next(work);
6017 rsp = ksmbd_resp_buf_next(work);
6018 if (!has_file_id(req->VolatileFileId)) {
6019 ksmbd_debug(SMB, "Compound request set FID = %llu\n",
6020 work->compound_fid);
6021 id = work->compound_fid;
6022 pid = work->compound_pfid;
6025 req = smb2_get_msg(work->request_buf);
6026 rsp = smb2_get_msg(work->response_buf);
6029 if (!has_file_id(id)) {
6030 id = req->VolatileFileId;
6031 pid = req->PersistentFileId;
6034 fp = ksmbd_lookup_fd_slow(work, id, pid);
6036 ksmbd_debug(SMB, "Invalid id for close: %u\n", id);
6041 switch (req->InfoType) {
6042 case SMB2_O_INFO_FILE:
6043 ksmbd_debug(SMB, "GOT SMB2_O_INFO_FILE\n");
6044 rc = smb2_set_info_file(work, fp, req, work->tcon->share_conf);
6046 case SMB2_O_INFO_SECURITY:
6047 ksmbd_debug(SMB, "GOT SMB2_O_INFO_SECURITY\n");
6048 if (ksmbd_override_fsids(work)) {
6052 rc = smb2_set_info_sec(fp,
6053 le32_to_cpu(req->AdditionalInformation),
6055 le32_to_cpu(req->BufferLength));
6056 ksmbd_revert_fsids(work);
6065 rsp->StructureSize = cpu_to_le16(2);
6066 inc_rfc1001_len(work->response_buf, 2);
6067 ksmbd_fd_put(work, fp);
6071 if (rc == -EACCES || rc == -EPERM || rc == -EXDEV)
6072 rsp->hdr.Status = STATUS_ACCESS_DENIED;
6073 else if (rc == -EINVAL)
6074 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
6075 else if (rc == -ESHARE)
6076 rsp->hdr.Status = STATUS_SHARING_VIOLATION;
6077 else if (rc == -ENOENT)
6078 rsp->hdr.Status = STATUS_OBJECT_NAME_INVALID;
6079 else if (rc == -EBUSY || rc == -ENOTEMPTY)
6080 rsp->hdr.Status = STATUS_DIRECTORY_NOT_EMPTY;
6081 else if (rc == -EAGAIN)
6082 rsp->hdr.Status = STATUS_FILE_LOCK_CONFLICT;
6083 else if (rc == -EBADF || rc == -ESTALE)
6084 rsp->hdr.Status = STATUS_INVALID_HANDLE;
6085 else if (rc == -EEXIST)
6086 rsp->hdr.Status = STATUS_OBJECT_NAME_COLLISION;
6087 else if (rsp->hdr.Status == 0 || rc == -EOPNOTSUPP)
6088 rsp->hdr.Status = STATUS_INVALID_INFO_CLASS;
6089 smb2_set_err_rsp(work);
6090 ksmbd_fd_put(work, fp);
6091 ksmbd_debug(SMB, "error while processing smb2 query rc = %d\n", rc);
6096 * smb2_read_pipe() - handler for smb2 read from IPC pipe
6097 * @work: smb work containing read IPC pipe command buffer
6099 * Return: 0 on success, otherwise error
6101 static noinline int smb2_read_pipe(struct ksmbd_work *work)
6103 int nbytes = 0, err;
6105 struct ksmbd_rpc_command *rpc_resp;
6106 struct smb2_read_req *req = smb2_get_msg(work->request_buf);
6107 struct smb2_read_rsp *rsp = smb2_get_msg(work->response_buf);
6109 id = req->VolatileFileId;
6111 inc_rfc1001_len(work->response_buf, 16);
6112 rpc_resp = ksmbd_rpc_read(work->sess, id);
6114 if (rpc_resp->flags != KSMBD_RPC_OK) {
6119 work->aux_payload_buf =
6120 kvmalloc(rpc_resp->payload_sz, GFP_KERNEL | __GFP_ZERO);
6121 if (!work->aux_payload_buf) {
6126 memcpy(work->aux_payload_buf, rpc_resp->payload,
6127 rpc_resp->payload_sz);
6129 nbytes = rpc_resp->payload_sz;
6130 work->resp_hdr_sz = get_rfc1002_len(work->response_buf) + 4;
6131 work->aux_payload_sz = nbytes;
6135 rsp->StructureSize = cpu_to_le16(17);
6136 rsp->DataOffset = 80;
6138 rsp->DataLength = cpu_to_le32(nbytes);
6139 rsp->DataRemaining = 0;
6141 inc_rfc1001_len(work->response_buf, nbytes);
6145 rsp->hdr.Status = STATUS_UNEXPECTED_IO_ERROR;
6146 smb2_set_err_rsp(work);
6151 static int smb2_set_remote_key_for_rdma(struct ksmbd_work *work,
6152 struct smb2_buffer_desc_v1 *desc,
6154 __le16 ChannelInfoLength)
6156 unsigned int i, ch_count;
6158 if (work->conn->dialect == SMB30_PROT_ID &&
6159 Channel != SMB2_CHANNEL_RDMA_V1)
6162 ch_count = le16_to_cpu(ChannelInfoLength) / sizeof(*desc);
6163 if (ksmbd_debug_types & KSMBD_DEBUG_RDMA) {
6164 for (i = 0; i < ch_count; i++) {
6165 pr_info("RDMA r/w request %#x: token %#x, length %#x\n",
6167 le32_to_cpu(desc[i].token),
6168 le32_to_cpu(desc[i].length));
6174 work->need_invalidate_rkey =
6175 (Channel == SMB2_CHANNEL_RDMA_V1_INVALIDATE);
6176 if (Channel == SMB2_CHANNEL_RDMA_V1_INVALIDATE)
6177 work->remote_key = le32_to_cpu(desc->token);
6181 static ssize_t smb2_read_rdma_channel(struct ksmbd_work *work,
6182 struct smb2_read_req *req, void *data_buf,
6187 err = ksmbd_conn_rdma_write(work->conn, data_buf, length,
6188 (struct smb2_buffer_desc_v1 *)
6189 ((char *)req + le16_to_cpu(req->ReadChannelInfoOffset)),
6190 le16_to_cpu(req->ReadChannelInfoLength));
6198 * smb2_read() - handler for smb2 read from file
6199 * @work: smb work containing read command buffer
6201 * Return: 0 on success, otherwise error
6203 int smb2_read(struct ksmbd_work *work)
6205 struct ksmbd_conn *conn = work->conn;
6206 struct smb2_read_req *req;
6207 struct smb2_read_rsp *rsp;
6208 struct ksmbd_file *fp = NULL;
6210 size_t length, mincount;
6211 ssize_t nbytes = 0, remain_bytes = 0;
6213 bool is_rdma_channel = false;
6214 unsigned int max_read_size = conn->vals->max_read_size;
6216 WORK_BUFFERS(work, req, rsp);
6218 if (test_share_config_flag(work->tcon->share_conf,
6219 KSMBD_SHARE_FLAG_PIPE)) {
6220 ksmbd_debug(SMB, "IPC pipe read request\n");
6221 return smb2_read_pipe(work);
6224 if (req->Channel == SMB2_CHANNEL_RDMA_V1_INVALIDATE ||
6225 req->Channel == SMB2_CHANNEL_RDMA_V1) {
6226 is_rdma_channel = true;
6227 max_read_size = get_smbd_max_read_write_size();
6230 if (is_rdma_channel == true) {
6231 unsigned int ch_offset = le16_to_cpu(req->ReadChannelInfoOffset);
6233 if (ch_offset < offsetof(struct smb2_read_req, Buffer)) {
6237 err = smb2_set_remote_key_for_rdma(work,
6238 (struct smb2_buffer_desc_v1 *)
6239 ((char *)req + ch_offset),
6241 req->ReadChannelInfoLength);
6246 fp = ksmbd_lookup_fd_slow(work, req->VolatileFileId, req->PersistentFileId);
6252 if (!(fp->daccess & (FILE_READ_DATA_LE | FILE_READ_ATTRIBUTES_LE))) {
6253 pr_err("Not permitted to read : 0x%x\n", fp->daccess);
6258 offset = le64_to_cpu(req->Offset);
6259 length = le32_to_cpu(req->Length);
6260 mincount = le32_to_cpu(req->MinimumCount);
6262 if (length > max_read_size) {
6263 ksmbd_debug(SMB, "limiting read size to max size(%u)\n",
6269 ksmbd_debug(SMB, "filename %pd, offset %lld, len %zu\n",
6270 fp->filp->f_path.dentry, offset, length);
6272 work->aux_payload_buf = kvmalloc(length, GFP_KERNEL | __GFP_ZERO);
6273 if (!work->aux_payload_buf) {
6278 nbytes = ksmbd_vfs_read(work, fp, length, &offset);
6284 if ((nbytes == 0 && length != 0) || nbytes < mincount) {
6285 kvfree(work->aux_payload_buf);
6286 work->aux_payload_buf = NULL;
6287 rsp->hdr.Status = STATUS_END_OF_FILE;
6288 smb2_set_err_rsp(work);
6289 ksmbd_fd_put(work, fp);
6293 ksmbd_debug(SMB, "nbytes %zu, offset %lld mincount %zu\n",
6294 nbytes, offset, mincount);
6296 if (is_rdma_channel == true) {
6297 /* write data to the client using rdma channel */
6298 remain_bytes = smb2_read_rdma_channel(work, req,
6299 work->aux_payload_buf,
6301 kvfree(work->aux_payload_buf);
6302 work->aux_payload_buf = NULL;
6305 if (remain_bytes < 0) {
6306 err = (int)remain_bytes;
6311 rsp->StructureSize = cpu_to_le16(17);
6312 rsp->DataOffset = 80;
6314 rsp->DataLength = cpu_to_le32(nbytes);
6315 rsp->DataRemaining = cpu_to_le32(remain_bytes);
6317 inc_rfc1001_len(work->response_buf, 16);
6318 work->resp_hdr_sz = get_rfc1002_len(work->response_buf) + 4;
6319 work->aux_payload_sz = nbytes;
6320 inc_rfc1001_len(work->response_buf, nbytes);
6321 ksmbd_fd_put(work, fp);
6327 rsp->hdr.Status = STATUS_INVALID_DEVICE_REQUEST;
6328 else if (err == -EAGAIN)
6329 rsp->hdr.Status = STATUS_FILE_LOCK_CONFLICT;
6330 else if (err == -ENOENT)
6331 rsp->hdr.Status = STATUS_FILE_CLOSED;
6332 else if (err == -EACCES)
6333 rsp->hdr.Status = STATUS_ACCESS_DENIED;
6334 else if (err == -ESHARE)
6335 rsp->hdr.Status = STATUS_SHARING_VIOLATION;
6336 else if (err == -EINVAL)
6337 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
6339 rsp->hdr.Status = STATUS_INVALID_HANDLE;
6341 smb2_set_err_rsp(work);
6343 ksmbd_fd_put(work, fp);
6348 * smb2_write_pipe() - handler for smb2 write on IPC pipe
6349 * @work: smb work containing write IPC pipe command buffer
6351 * Return: 0 on success, otherwise error
6353 static noinline int smb2_write_pipe(struct ksmbd_work *work)
6355 struct smb2_write_req *req = smb2_get_msg(work->request_buf);
6356 struct smb2_write_rsp *rsp = smb2_get_msg(work->response_buf);
6357 struct ksmbd_rpc_command *rpc_resp;
6359 int err = 0, ret = 0;
6363 length = le32_to_cpu(req->Length);
6364 id = req->VolatileFileId;
6366 if ((u64)le16_to_cpu(req->DataOffset) + length >
6367 get_rfc1002_len(work->request_buf)) {
6368 pr_err("invalid write data offset %u, smb_len %u\n",
6369 le16_to_cpu(req->DataOffset),
6370 get_rfc1002_len(work->request_buf));
6375 data_buf = (char *)(((char *)&req->hdr.ProtocolId) +
6376 le16_to_cpu(req->DataOffset));
6378 rpc_resp = ksmbd_rpc_write(work->sess, id, data_buf, length);
6380 if (rpc_resp->flags == KSMBD_RPC_ENOTIMPLEMENTED) {
6381 rsp->hdr.Status = STATUS_NOT_SUPPORTED;
6383 smb2_set_err_rsp(work);
6386 if (rpc_resp->flags != KSMBD_RPC_OK) {
6387 rsp->hdr.Status = STATUS_INVALID_HANDLE;
6388 smb2_set_err_rsp(work);
6395 rsp->StructureSize = cpu_to_le16(17);
6396 rsp->DataOffset = 0;
6398 rsp->DataLength = cpu_to_le32(length);
6399 rsp->DataRemaining = 0;
6401 inc_rfc1001_len(work->response_buf, 16);
6405 rsp->hdr.Status = STATUS_INVALID_HANDLE;
6406 smb2_set_err_rsp(work);
6412 static ssize_t smb2_write_rdma_channel(struct ksmbd_work *work,
6413 struct smb2_write_req *req,
6414 struct ksmbd_file *fp,
6415 loff_t offset, size_t length, bool sync)
6421 data_buf = kvmalloc(length, GFP_KERNEL | __GFP_ZERO);
6425 ret = ksmbd_conn_rdma_read(work->conn, data_buf, length,
6426 (struct smb2_buffer_desc_v1 *)
6427 ((char *)req + le16_to_cpu(req->WriteChannelInfoOffset)),
6428 le16_to_cpu(req->WriteChannelInfoLength));
6434 ret = ksmbd_vfs_write(work, fp, data_buf, length, &offset, sync, &nbytes);
6443 * smb2_write() - handler for smb2 write from file
6444 * @work: smb work containing write command buffer
6446 * Return: 0 on success, otherwise error
6448 int smb2_write(struct ksmbd_work *work)
6450 struct smb2_write_req *req;
6451 struct smb2_write_rsp *rsp;
6452 struct ksmbd_file *fp = NULL;
6457 bool writethrough = false, is_rdma_channel = false;
6459 unsigned int max_write_size = work->conn->vals->max_write_size;
6461 WORK_BUFFERS(work, req, rsp);
6463 if (test_share_config_flag(work->tcon->share_conf, KSMBD_SHARE_FLAG_PIPE)) {
6464 ksmbd_debug(SMB, "IPC pipe write request\n");
6465 return smb2_write_pipe(work);
6468 offset = le64_to_cpu(req->Offset);
6469 length = le32_to_cpu(req->Length);
6471 if (req->Channel == SMB2_CHANNEL_RDMA_V1 ||
6472 req->Channel == SMB2_CHANNEL_RDMA_V1_INVALIDATE) {
6473 is_rdma_channel = true;
6474 max_write_size = get_smbd_max_read_write_size();
6475 length = le32_to_cpu(req->RemainingBytes);
6478 if (is_rdma_channel == true) {
6479 unsigned int ch_offset = le16_to_cpu(req->WriteChannelInfoOffset);
6481 if (req->Length != 0 || req->DataOffset != 0 ||
6482 ch_offset < offsetof(struct smb2_write_req, Buffer)) {
6486 err = smb2_set_remote_key_for_rdma(work,
6487 (struct smb2_buffer_desc_v1 *)
6488 ((char *)req + ch_offset),
6490 req->WriteChannelInfoLength);
6495 if (!test_tree_conn_flag(work->tcon, KSMBD_TREE_CONN_FLAG_WRITABLE)) {
6496 ksmbd_debug(SMB, "User does not have write permission\n");
6501 fp = ksmbd_lookup_fd_slow(work, req->VolatileFileId, req->PersistentFileId);
6507 if (!(fp->daccess & (FILE_WRITE_DATA_LE | FILE_READ_ATTRIBUTES_LE))) {
6508 pr_err("Not permitted to write : 0x%x\n", fp->daccess);
6513 if (length > max_write_size) {
6514 ksmbd_debug(SMB, "limiting write size to max size(%u)\n",
6520 ksmbd_debug(SMB, "flags %u\n", le32_to_cpu(req->Flags));
6521 if (le32_to_cpu(req->Flags) & SMB2_WRITEFLAG_WRITE_THROUGH)
6522 writethrough = true;
6524 if (is_rdma_channel == false) {
6525 if (le16_to_cpu(req->DataOffset) <
6526 offsetof(struct smb2_write_req, Buffer)) {
6531 data_buf = (char *)(((char *)&req->hdr.ProtocolId) +
6532 le16_to_cpu(req->DataOffset));
6534 ksmbd_debug(SMB, "filename %pd, offset %lld, len %zu\n",
6535 fp->filp->f_path.dentry, offset, length);
6536 err = ksmbd_vfs_write(work, fp, data_buf, length, &offset,
6537 writethrough, &nbytes);
6541 /* read data from the client using rdma channel, and
6544 nbytes = smb2_write_rdma_channel(work, req, fp, offset, length,
6552 rsp->StructureSize = cpu_to_le16(17);
6553 rsp->DataOffset = 0;
6555 rsp->DataLength = cpu_to_le32(nbytes);
6556 rsp->DataRemaining = 0;
6558 inc_rfc1001_len(work->response_buf, 16);
6559 ksmbd_fd_put(work, fp);
6564 rsp->hdr.Status = STATUS_FILE_LOCK_CONFLICT;
6565 else if (err == -ENOSPC || err == -EFBIG)
6566 rsp->hdr.Status = STATUS_DISK_FULL;
6567 else if (err == -ENOENT)
6568 rsp->hdr.Status = STATUS_FILE_CLOSED;
6569 else if (err == -EACCES)
6570 rsp->hdr.Status = STATUS_ACCESS_DENIED;
6571 else if (err == -ESHARE)
6572 rsp->hdr.Status = STATUS_SHARING_VIOLATION;
6573 else if (err == -EINVAL)
6574 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
6576 rsp->hdr.Status = STATUS_INVALID_HANDLE;
6578 smb2_set_err_rsp(work);
6579 ksmbd_fd_put(work, fp);
6584 * smb2_flush() - handler for smb2 flush file - fsync
6585 * @work: smb work containing flush command buffer
6587 * Return: 0 on success, otherwise error
6589 int smb2_flush(struct ksmbd_work *work)
6591 struct smb2_flush_req *req;
6592 struct smb2_flush_rsp *rsp;
6595 WORK_BUFFERS(work, req, rsp);
6597 ksmbd_debug(SMB, "SMB2_FLUSH called for fid %llu\n", req->VolatileFileId);
6599 err = ksmbd_vfs_fsync(work, req->VolatileFileId, req->PersistentFileId);
6603 rsp->StructureSize = cpu_to_le16(4);
6605 inc_rfc1001_len(work->response_buf, 4);
6610 rsp->hdr.Status = STATUS_INVALID_HANDLE;
6611 smb2_set_err_rsp(work);
6618 * smb2_cancel() - handler for smb2 cancel command
6619 * @work: smb work containing cancel command buffer
6621 * Return: 0 on success, otherwise error
6623 int smb2_cancel(struct ksmbd_work *work)
6625 struct ksmbd_conn *conn = work->conn;
6626 struct smb2_hdr *hdr = smb2_get_msg(work->request_buf);
6627 struct smb2_hdr *chdr;
6628 struct ksmbd_work *cancel_work = NULL, *iter;
6629 struct list_head *command_list;
6631 ksmbd_debug(SMB, "smb2 cancel called on mid %llu, async flags 0x%x\n",
6632 hdr->MessageId, hdr->Flags);
6634 if (hdr->Flags & SMB2_FLAGS_ASYNC_COMMAND) {
6635 command_list = &conn->async_requests;
6637 spin_lock(&conn->request_lock);
6638 list_for_each_entry(iter, command_list,
6639 async_request_entry) {
6640 chdr = smb2_get_msg(iter->request_buf);
6642 if (iter->async_id !=
6643 le64_to_cpu(hdr->Id.AsyncId))
6647 "smb2 with AsyncId %llu cancelled command = 0x%x\n",
6648 le64_to_cpu(hdr->Id.AsyncId),
6649 le16_to_cpu(chdr->Command));
6653 spin_unlock(&conn->request_lock);
6655 command_list = &conn->requests;
6657 spin_lock(&conn->request_lock);
6658 list_for_each_entry(iter, command_list, request_entry) {
6659 chdr = smb2_get_msg(iter->request_buf);
6661 if (chdr->MessageId != hdr->MessageId ||
6666 "smb2 with mid %llu cancelled command = 0x%x\n",
6667 le64_to_cpu(hdr->MessageId),
6668 le16_to_cpu(chdr->Command));
6672 spin_unlock(&conn->request_lock);
6676 cancel_work->state = KSMBD_WORK_CANCELLED;
6677 if (cancel_work->cancel_fn)
6678 cancel_work->cancel_fn(cancel_work->cancel_argv);
6681 /* For SMB2_CANCEL command itself send no response*/
6682 work->send_no_response = 1;
6686 struct file_lock *smb_flock_init(struct file *f)
6688 struct file_lock *fl;
6690 fl = locks_alloc_lock();
6694 locks_init_lock(fl);
6697 fl->fl_pid = current->tgid;
6699 fl->fl_flags = FL_POSIX;
6701 fl->fl_lmops = NULL;
6707 static int smb2_set_flock_flags(struct file_lock *flock, int flags)
6711 /* Checking for wrong flag combination during lock request*/
6713 case SMB2_LOCKFLAG_SHARED:
6714 ksmbd_debug(SMB, "received shared request\n");
6716 flock->fl_type = F_RDLCK;
6717 flock->fl_flags |= FL_SLEEP;
6719 case SMB2_LOCKFLAG_EXCLUSIVE:
6720 ksmbd_debug(SMB, "received exclusive request\n");
6722 flock->fl_type = F_WRLCK;
6723 flock->fl_flags |= FL_SLEEP;
6725 case SMB2_LOCKFLAG_SHARED | SMB2_LOCKFLAG_FAIL_IMMEDIATELY:
6727 "received shared & fail immediately request\n");
6729 flock->fl_type = F_RDLCK;
6731 case SMB2_LOCKFLAG_EXCLUSIVE | SMB2_LOCKFLAG_FAIL_IMMEDIATELY:
6733 "received exclusive & fail immediately request\n");
6735 flock->fl_type = F_WRLCK;
6737 case SMB2_LOCKFLAG_UNLOCK:
6738 ksmbd_debug(SMB, "received unlock request\n");
6739 flock->fl_type = F_UNLCK;
6747 static struct ksmbd_lock *smb2_lock_init(struct file_lock *flock,
6748 unsigned int cmd, int flags,
6749 struct list_head *lock_list)
6751 struct ksmbd_lock *lock;
6753 lock = kzalloc(sizeof(struct ksmbd_lock), GFP_KERNEL);
6759 lock->start = flock->fl_start;
6760 lock->end = flock->fl_end;
6761 lock->flags = flags;
6762 if (lock->start == lock->end)
6764 INIT_LIST_HEAD(&lock->clist);
6765 INIT_LIST_HEAD(&lock->flist);
6766 INIT_LIST_HEAD(&lock->llist);
6767 list_add_tail(&lock->llist, lock_list);
6772 static void smb2_remove_blocked_lock(void **argv)
6774 struct file_lock *flock = (struct file_lock *)argv[0];
6776 ksmbd_vfs_posix_lock_unblock(flock);
6777 wake_up(&flock->fl_wait);
6780 static inline bool lock_defer_pending(struct file_lock *fl)
6782 /* check pending lock waiters */
6783 return waitqueue_active(&fl->fl_wait);
6787 * smb2_lock() - handler for smb2 file lock command
6788 * @work: smb work containing lock command buffer
6790 * Return: 0 on success, otherwise error
6792 int smb2_lock(struct ksmbd_work *work)
6794 struct smb2_lock_req *req = smb2_get_msg(work->request_buf);
6795 struct smb2_lock_rsp *rsp = smb2_get_msg(work->response_buf);
6796 struct smb2_lock_element *lock_ele;
6797 struct ksmbd_file *fp = NULL;
6798 struct file_lock *flock = NULL;
6799 struct file *filp = NULL;
6803 int err = -EIO, i, rc = 0;
6804 u64 lock_start, lock_length;
6805 struct ksmbd_lock *smb_lock = NULL, *cmp_lock, *tmp, *tmp2;
6806 struct ksmbd_conn *conn;
6808 LIST_HEAD(lock_list);
6809 LIST_HEAD(rollback_list);
6812 ksmbd_debug(SMB, "Received lock request\n");
6813 fp = ksmbd_lookup_fd_slow(work, req->VolatileFileId, req->PersistentFileId);
6815 ksmbd_debug(SMB, "Invalid file id for lock : %llu\n", req->VolatileFileId);
6821 lock_count = le16_to_cpu(req->LockCount);
6822 lock_ele = req->locks;
6824 ksmbd_debug(SMB, "lock count is %d\n", lock_count);
6830 for (i = 0; i < lock_count; i++) {
6831 flags = le32_to_cpu(lock_ele[i].Flags);
6833 flock = smb_flock_init(filp);
6837 cmd = smb2_set_flock_flags(flock, flags);
6839 lock_start = le64_to_cpu(lock_ele[i].Offset);
6840 lock_length = le64_to_cpu(lock_ele[i].Length);
6841 if (lock_start > U64_MAX - lock_length) {
6842 pr_err("Invalid lock range requested\n");
6843 rsp->hdr.Status = STATUS_INVALID_LOCK_RANGE;
6847 if (lock_start > OFFSET_MAX)
6848 flock->fl_start = OFFSET_MAX;
6850 flock->fl_start = lock_start;
6852 lock_length = le64_to_cpu(lock_ele[i].Length);
6853 if (lock_length > OFFSET_MAX - flock->fl_start)
6854 lock_length = OFFSET_MAX - flock->fl_start;
6856 flock->fl_end = flock->fl_start + lock_length;
6858 if (flock->fl_end < flock->fl_start) {
6860 "the end offset(%llx) is smaller than the start offset(%llx)\n",
6861 flock->fl_end, flock->fl_start);
6862 rsp->hdr.Status = STATUS_INVALID_LOCK_RANGE;
6866 /* Check conflict locks in one request */
6867 list_for_each_entry(cmp_lock, &lock_list, llist) {
6868 if (cmp_lock->fl->fl_start <= flock->fl_start &&
6869 cmp_lock->fl->fl_end >= flock->fl_end) {
6870 if (cmp_lock->fl->fl_type != F_UNLCK &&
6871 flock->fl_type != F_UNLCK) {
6872 pr_err("conflict two locks in one request\n");
6879 smb_lock = smb2_lock_init(flock, cmd, flags, &lock_list);
6886 list_for_each_entry_safe(smb_lock, tmp, &lock_list, llist) {
6887 if (smb_lock->cmd < 0) {
6892 if (!(smb_lock->flags & SMB2_LOCKFLAG_MASK)) {
6897 if ((prior_lock & (SMB2_LOCKFLAG_EXCLUSIVE | SMB2_LOCKFLAG_SHARED) &&
6898 smb_lock->flags & SMB2_LOCKFLAG_UNLOCK) ||
6899 (prior_lock == SMB2_LOCKFLAG_UNLOCK &&
6900 !(smb_lock->flags & SMB2_LOCKFLAG_UNLOCK))) {
6905 prior_lock = smb_lock->flags;
6907 if (!(smb_lock->flags & SMB2_LOCKFLAG_UNLOCK) &&
6908 !(smb_lock->flags & SMB2_LOCKFLAG_FAIL_IMMEDIATELY))
6912 /* check locks in connection list */
6913 read_lock(&conn_list_lock);
6914 list_for_each_entry(conn, &conn_list, conns_list) {
6915 spin_lock(&conn->llist_lock);
6916 list_for_each_entry_safe(cmp_lock, tmp2, &conn->lock_list, clist) {
6917 if (file_inode(cmp_lock->fl->fl_file) !=
6918 file_inode(smb_lock->fl->fl_file))
6921 if (smb_lock->fl->fl_type == F_UNLCK) {
6922 if (cmp_lock->fl->fl_file == smb_lock->fl->fl_file &&
6923 cmp_lock->start == smb_lock->start &&
6924 cmp_lock->end == smb_lock->end &&
6925 !lock_defer_pending(cmp_lock->fl)) {
6927 list_del(&cmp_lock->flist);
6928 list_del(&cmp_lock->clist);
6929 spin_unlock(&conn->llist_lock);
6930 read_unlock(&conn_list_lock);
6932 locks_free_lock(cmp_lock->fl);
6939 if (cmp_lock->fl->fl_file == smb_lock->fl->fl_file) {
6940 if (smb_lock->flags & SMB2_LOCKFLAG_SHARED)
6943 if (cmp_lock->flags & SMB2_LOCKFLAG_SHARED)
6947 /* check zero byte lock range */
6948 if (cmp_lock->zero_len && !smb_lock->zero_len &&
6949 cmp_lock->start > smb_lock->start &&
6950 cmp_lock->start < smb_lock->end) {
6951 spin_unlock(&conn->llist_lock);
6952 read_unlock(&conn_list_lock);
6953 pr_err("previous lock conflict with zero byte lock range\n");
6957 if (smb_lock->zero_len && !cmp_lock->zero_len &&
6958 smb_lock->start > cmp_lock->start &&
6959 smb_lock->start < cmp_lock->end) {
6960 spin_unlock(&conn->llist_lock);
6961 read_unlock(&conn_list_lock);
6962 pr_err("current lock conflict with zero byte lock range\n");
6966 if (((cmp_lock->start <= smb_lock->start &&
6967 cmp_lock->end > smb_lock->start) ||
6968 (cmp_lock->start < smb_lock->end &&
6969 cmp_lock->end >= smb_lock->end)) &&
6970 !cmp_lock->zero_len && !smb_lock->zero_len) {
6971 spin_unlock(&conn->llist_lock);
6972 read_unlock(&conn_list_lock);
6973 pr_err("Not allow lock operation on exclusive lock range\n");
6977 spin_unlock(&conn->llist_lock);
6979 read_unlock(&conn_list_lock);
6981 if (smb_lock->fl->fl_type == F_UNLCK && nolock) {
6982 pr_err("Try to unlock nolocked range\n");
6983 rsp->hdr.Status = STATUS_RANGE_NOT_LOCKED;
6988 if (smb_lock->zero_len) {
6993 flock = smb_lock->fl;
6994 list_del(&smb_lock->llist);
6996 rc = vfs_lock_file(filp, smb_lock->cmd, flock, NULL);
6998 if (flags & SMB2_LOCKFLAG_UNLOCK) {
7000 ksmbd_debug(SMB, "File unlocked\n");
7001 } else if (rc == -ENOENT) {
7002 rsp->hdr.Status = STATUS_NOT_LOCKED;
7005 locks_free_lock(flock);
7008 if (rc == FILE_LOCK_DEFERRED) {
7012 "would have to wait for getting lock\n");
7013 spin_lock(&work->conn->llist_lock);
7014 list_add_tail(&smb_lock->clist,
7015 &work->conn->lock_list);
7016 spin_unlock(&work->conn->llist_lock);
7017 list_add(&smb_lock->llist, &rollback_list);
7019 argv = kmalloc(sizeof(void *), GFP_KERNEL);
7026 rc = setup_async_work(work,
7027 smb2_remove_blocked_lock,
7033 spin_lock(&fp->f_lock);
7034 list_add(&work->fp_entry, &fp->blocked_works);
7035 spin_unlock(&fp->f_lock);
7037 smb2_send_interim_resp(work, STATUS_PENDING);
7039 ksmbd_vfs_posix_lock_wait(flock);
7041 if (work->state != KSMBD_WORK_ACTIVE) {
7042 list_del(&smb_lock->llist);
7043 spin_lock(&work->conn->llist_lock);
7044 list_del(&smb_lock->clist);
7045 spin_unlock(&work->conn->llist_lock);
7046 locks_free_lock(flock);
7048 if (work->state == KSMBD_WORK_CANCELLED) {
7049 spin_lock(&fp->f_lock);
7050 list_del(&work->fp_entry);
7051 spin_unlock(&fp->f_lock);
7055 smb2_send_interim_resp(work,
7057 work->send_no_response = 1;
7060 init_smb2_rsp_hdr(work);
7061 smb2_set_err_rsp(work);
7063 STATUS_RANGE_NOT_LOCKED;
7068 list_del(&smb_lock->llist);
7069 spin_lock(&work->conn->llist_lock);
7070 list_del(&smb_lock->clist);
7071 spin_unlock(&work->conn->llist_lock);
7073 spin_lock(&fp->f_lock);
7074 list_del(&work->fp_entry);
7075 spin_unlock(&fp->f_lock);
7078 spin_lock(&work->conn->llist_lock);
7079 list_add_tail(&smb_lock->clist,
7080 &work->conn->lock_list);
7081 list_add_tail(&smb_lock->flist,
7083 spin_unlock(&work->conn->llist_lock);
7084 list_add(&smb_lock->llist, &rollback_list);
7085 ksmbd_debug(SMB, "successful in taking lock\n");
7092 if (atomic_read(&fp->f_ci->op_count) > 1)
7093 smb_break_all_oplock(work, fp);
7095 rsp->StructureSize = cpu_to_le16(4);
7096 ksmbd_debug(SMB, "successful in taking lock\n");
7097 rsp->hdr.Status = STATUS_SUCCESS;
7099 inc_rfc1001_len(work->response_buf, 4);
7100 ksmbd_fd_put(work, fp);
7104 list_for_each_entry_safe(smb_lock, tmp, &lock_list, llist) {
7105 locks_free_lock(smb_lock->fl);
7106 list_del(&smb_lock->llist);
7110 list_for_each_entry_safe(smb_lock, tmp, &rollback_list, llist) {
7111 struct file_lock *rlock = NULL;
7113 rlock = smb_flock_init(filp);
7114 rlock->fl_type = F_UNLCK;
7115 rlock->fl_start = smb_lock->start;
7116 rlock->fl_end = smb_lock->end;
7118 rc = vfs_lock_file(filp, 0, rlock, NULL);
7120 pr_err("rollback unlock fail : %d\n", rc);
7122 list_del(&smb_lock->llist);
7123 spin_lock(&work->conn->llist_lock);
7124 if (!list_empty(&smb_lock->flist))
7125 list_del(&smb_lock->flist);
7126 list_del(&smb_lock->clist);
7127 spin_unlock(&work->conn->llist_lock);
7129 locks_free_lock(smb_lock->fl);
7130 locks_free_lock(rlock);
7134 ksmbd_debug(SMB, "failed in taking lock(flags : %x), err : %d\n", flags, err);
7136 if (!rsp->hdr.Status) {
7138 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
7139 else if (err == -ENOMEM)
7140 rsp->hdr.Status = STATUS_INSUFFICIENT_RESOURCES;
7141 else if (err == -ENOENT)
7142 rsp->hdr.Status = STATUS_FILE_CLOSED;
7144 rsp->hdr.Status = STATUS_LOCK_NOT_GRANTED;
7147 smb2_set_err_rsp(work);
7148 ksmbd_fd_put(work, fp);
7152 static int fsctl_copychunk(struct ksmbd_work *work,
7153 struct copychunk_ioctl_req *ci_req,
7154 unsigned int cnt_code,
7155 unsigned int input_count,
7156 unsigned long long volatile_id,
7157 unsigned long long persistent_id,
7158 struct smb2_ioctl_rsp *rsp)
7160 struct copychunk_ioctl_rsp *ci_rsp;
7161 struct ksmbd_file *src_fp = NULL, *dst_fp = NULL;
7162 struct srv_copychunk *chunks;
7163 unsigned int i, chunk_count, chunk_count_written = 0;
7164 unsigned int chunk_size_written = 0;
7165 loff_t total_size_written = 0;
7168 ci_rsp = (struct copychunk_ioctl_rsp *)&rsp->Buffer[0];
7170 rsp->VolatileFileId = volatile_id;
7171 rsp->PersistentFileId = persistent_id;
7172 ci_rsp->ChunksWritten =
7173 cpu_to_le32(ksmbd_server_side_copy_max_chunk_count());
7174 ci_rsp->ChunkBytesWritten =
7175 cpu_to_le32(ksmbd_server_side_copy_max_chunk_size());
7176 ci_rsp->TotalBytesWritten =
7177 cpu_to_le32(ksmbd_server_side_copy_max_total_size());
7179 chunks = (struct srv_copychunk *)&ci_req->Chunks[0];
7180 chunk_count = le32_to_cpu(ci_req->ChunkCount);
7181 if (chunk_count == 0)
7183 total_size_written = 0;
7185 /* verify the SRV_COPYCHUNK_COPY packet */
7186 if (chunk_count > ksmbd_server_side_copy_max_chunk_count() ||
7187 input_count < offsetof(struct copychunk_ioctl_req, Chunks) +
7188 chunk_count * sizeof(struct srv_copychunk)) {
7189 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
7193 for (i = 0; i < chunk_count; i++) {
7194 if (le32_to_cpu(chunks[i].Length) == 0 ||
7195 le32_to_cpu(chunks[i].Length) > ksmbd_server_side_copy_max_chunk_size())
7197 total_size_written += le32_to_cpu(chunks[i].Length);
7200 if (i < chunk_count ||
7201 total_size_written > ksmbd_server_side_copy_max_total_size()) {
7202 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
7206 src_fp = ksmbd_lookup_foreign_fd(work,
7207 le64_to_cpu(ci_req->ResumeKey[0]));
7208 dst_fp = ksmbd_lookup_fd_slow(work, volatile_id, persistent_id);
7211 src_fp->persistent_id != le64_to_cpu(ci_req->ResumeKey[1])) {
7212 rsp->hdr.Status = STATUS_OBJECT_NAME_NOT_FOUND;
7217 rsp->hdr.Status = STATUS_FILE_CLOSED;
7222 * FILE_READ_DATA should only be included in
7223 * the FSCTL_COPYCHUNK case
7225 if (cnt_code == FSCTL_COPYCHUNK &&
7226 !(dst_fp->daccess & (FILE_READ_DATA_LE | FILE_GENERIC_READ_LE))) {
7227 rsp->hdr.Status = STATUS_ACCESS_DENIED;
7231 ret = ksmbd_vfs_copy_file_ranges(work, src_fp, dst_fp,
7232 chunks, chunk_count,
7233 &chunk_count_written,
7234 &chunk_size_written,
7235 &total_size_written);
7238 rsp->hdr.Status = STATUS_ACCESS_DENIED;
7240 rsp->hdr.Status = STATUS_FILE_LOCK_CONFLICT;
7241 else if (ret == -EBADF)
7242 rsp->hdr.Status = STATUS_INVALID_HANDLE;
7243 else if (ret == -EFBIG || ret == -ENOSPC)
7244 rsp->hdr.Status = STATUS_DISK_FULL;
7245 else if (ret == -EINVAL)
7246 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
7247 else if (ret == -EISDIR)
7248 rsp->hdr.Status = STATUS_FILE_IS_A_DIRECTORY;
7249 else if (ret == -E2BIG)
7250 rsp->hdr.Status = STATUS_INVALID_VIEW_SIZE;
7252 rsp->hdr.Status = STATUS_UNEXPECTED_IO_ERROR;
7255 ci_rsp->ChunksWritten = cpu_to_le32(chunk_count_written);
7256 ci_rsp->ChunkBytesWritten = cpu_to_le32(chunk_size_written);
7257 ci_rsp->TotalBytesWritten = cpu_to_le32(total_size_written);
7259 ksmbd_fd_put(work, src_fp);
7260 ksmbd_fd_put(work, dst_fp);
7264 static __be32 idev_ipv4_address(struct in_device *idev)
7268 struct in_ifaddr *ifa;
7271 in_dev_for_each_ifa_rcu(ifa, idev) {
7272 if (ifa->ifa_flags & IFA_F_SECONDARY)
7275 addr = ifa->ifa_address;
7282 static int fsctl_query_iface_info_ioctl(struct ksmbd_conn *conn,
7283 struct smb2_ioctl_rsp *rsp,
7284 unsigned int out_buf_len)
7286 struct network_interface_info_ioctl_rsp *nii_rsp = NULL;
7288 struct net_device *netdev;
7289 struct sockaddr_storage_rsp *sockaddr_storage;
7291 unsigned long long speed;
7294 for_each_netdev(&init_net, netdev) {
7295 bool ipv4_set = false;
7297 if (netdev->type == ARPHRD_LOOPBACK)
7300 flags = dev_get_flags(netdev);
7301 if (!(flags & IFF_RUNNING))
7305 nbytes + sizeof(struct network_interface_info_ioctl_rsp)) {
7310 nii_rsp = (struct network_interface_info_ioctl_rsp *)
7311 &rsp->Buffer[nbytes];
7312 nii_rsp->IfIndex = cpu_to_le32(netdev->ifindex);
7314 nii_rsp->Capability = 0;
7315 if (netdev->real_num_tx_queues > 1)
7316 nii_rsp->Capability |= cpu_to_le32(RSS_CAPABLE);
7317 if (ksmbd_rdma_capable_netdev(netdev))
7318 nii_rsp->Capability |= cpu_to_le32(RDMA_CAPABLE);
7320 nii_rsp->Next = cpu_to_le32(152);
7321 nii_rsp->Reserved = 0;
7323 if (netdev->ethtool_ops->get_link_ksettings) {
7324 struct ethtool_link_ksettings cmd;
7326 netdev->ethtool_ops->get_link_ksettings(netdev, &cmd);
7327 speed = cmd.base.speed;
7329 ksmbd_debug(SMB, "%s %s\n", netdev->name,
7330 "speed is unknown, defaulting to 1Gb/sec");
7335 nii_rsp->LinkSpeed = cpu_to_le64(speed);
7337 sockaddr_storage = (struct sockaddr_storage_rsp *)
7338 nii_rsp->SockAddr_Storage;
7339 memset(sockaddr_storage, 0, 128);
7342 struct in_device *idev;
7344 sockaddr_storage->Family = cpu_to_le16(INTERNETWORK);
7345 sockaddr_storage->addr4.Port = 0;
7347 idev = __in_dev_get_rtnl(netdev);
7350 sockaddr_storage->addr4.IPv4address =
7351 idev_ipv4_address(idev);
7352 nbytes += sizeof(struct network_interface_info_ioctl_rsp);
7356 struct inet6_dev *idev6;
7357 struct inet6_ifaddr *ifa;
7358 __u8 *ipv6_addr = sockaddr_storage->addr6.IPv6address;
7360 sockaddr_storage->Family = cpu_to_le16(INTERNETWORKV6);
7361 sockaddr_storage->addr6.Port = 0;
7362 sockaddr_storage->addr6.FlowInfo = 0;
7364 idev6 = __in6_dev_get(netdev);
7368 list_for_each_entry(ifa, &idev6->addr_list, if_list) {
7369 if (ifa->flags & (IFA_F_TENTATIVE |
7372 memcpy(ipv6_addr, ifa->addr.s6_addr, 16);
7375 sockaddr_storage->addr6.ScopeId = 0;
7376 nbytes += sizeof(struct network_interface_info_ioctl_rsp);
7381 /* zero if this is last one */
7385 rsp->PersistentFileId = SMB2_NO_FID;
7386 rsp->VolatileFileId = SMB2_NO_FID;
7390 static int fsctl_validate_negotiate_info(struct ksmbd_conn *conn,
7391 struct validate_negotiate_info_req *neg_req,
7392 struct validate_negotiate_info_rsp *neg_rsp,
7393 unsigned int in_buf_len)
7398 if (in_buf_len < offsetof(struct validate_negotiate_info_req, Dialects) +
7399 le16_to_cpu(neg_req->DialectCount) * sizeof(__le16))
7402 dialect = ksmbd_lookup_dialect_by_id(neg_req->Dialects,
7403 neg_req->DialectCount);
7404 if (dialect == BAD_PROT_ID || dialect != conn->dialect) {
7409 if (strncmp(neg_req->Guid, conn->ClientGUID, SMB2_CLIENT_GUID_SIZE)) {
7414 if (le16_to_cpu(neg_req->SecurityMode) != conn->cli_sec_mode) {
7419 if (le32_to_cpu(neg_req->Capabilities) != conn->cli_cap) {
7424 neg_rsp->Capabilities = cpu_to_le32(conn->vals->capabilities);
7425 memset(neg_rsp->Guid, 0, SMB2_CLIENT_GUID_SIZE);
7426 neg_rsp->SecurityMode = cpu_to_le16(conn->srv_sec_mode);
7427 neg_rsp->Dialect = cpu_to_le16(conn->dialect);
7432 static int fsctl_query_allocated_ranges(struct ksmbd_work *work, u64 id,
7433 struct file_allocated_range_buffer *qar_req,
7434 struct file_allocated_range_buffer *qar_rsp,
7435 unsigned int in_count, unsigned int *out_count)
7437 struct ksmbd_file *fp;
7438 loff_t start, length;
7445 fp = ksmbd_lookup_fd_fast(work, id);
7449 start = le64_to_cpu(qar_req->file_offset);
7450 length = le64_to_cpu(qar_req->length);
7452 ret = ksmbd_vfs_fqar_lseek(fp, start, length,
7453 qar_rsp, in_count, out_count);
7454 if (ret && ret != -E2BIG)
7457 ksmbd_fd_put(work, fp);
7461 static int fsctl_pipe_transceive(struct ksmbd_work *work, u64 id,
7462 unsigned int out_buf_len,
7463 struct smb2_ioctl_req *req,
7464 struct smb2_ioctl_rsp *rsp)
7466 struct ksmbd_rpc_command *rpc_resp;
7467 char *data_buf = (char *)&req->Buffer[0];
7470 rpc_resp = ksmbd_rpc_ioctl(work->sess, id, data_buf,
7471 le32_to_cpu(req->InputCount));
7473 if (rpc_resp->flags == KSMBD_RPC_SOME_NOT_MAPPED) {
7475 * set STATUS_SOME_NOT_MAPPED response
7476 * for unknown domain sid.
7478 rsp->hdr.Status = STATUS_SOME_NOT_MAPPED;
7479 } else if (rpc_resp->flags == KSMBD_RPC_ENOTIMPLEMENTED) {
7480 rsp->hdr.Status = STATUS_NOT_SUPPORTED;
7482 } else if (rpc_resp->flags != KSMBD_RPC_OK) {
7483 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
7487 nbytes = rpc_resp->payload_sz;
7488 if (rpc_resp->payload_sz > out_buf_len) {
7489 rsp->hdr.Status = STATUS_BUFFER_OVERFLOW;
7490 nbytes = out_buf_len;
7493 if (!rpc_resp->payload_sz) {
7495 STATUS_UNEXPECTED_IO_ERROR;
7499 memcpy((char *)rsp->Buffer, rpc_resp->payload, nbytes);
7506 static inline int fsctl_set_sparse(struct ksmbd_work *work, u64 id,
7507 struct file_sparse *sparse)
7509 struct ksmbd_file *fp;
7510 struct user_namespace *user_ns;
7514 fp = ksmbd_lookup_fd_fast(work, id);
7517 user_ns = file_mnt_user_ns(fp->filp);
7519 old_fattr = fp->f_ci->m_fattr;
7520 if (sparse->SetSparse)
7521 fp->f_ci->m_fattr |= FILE_ATTRIBUTE_SPARSE_FILE_LE;
7523 fp->f_ci->m_fattr &= ~FILE_ATTRIBUTE_SPARSE_FILE_LE;
7525 if (fp->f_ci->m_fattr != old_fattr &&
7526 test_share_config_flag(work->tcon->share_conf,
7527 KSMBD_SHARE_FLAG_STORE_DOS_ATTRS)) {
7528 struct xattr_dos_attrib da;
7530 ret = ksmbd_vfs_get_dos_attrib_xattr(user_ns,
7531 fp->filp->f_path.dentry, &da);
7535 da.attr = le32_to_cpu(fp->f_ci->m_fattr);
7536 ret = ksmbd_vfs_set_dos_attrib_xattr(user_ns,
7537 fp->filp->f_path.dentry, &da);
7539 fp->f_ci->m_fattr = old_fattr;
7543 ksmbd_fd_put(work, fp);
7547 static int fsctl_request_resume_key(struct ksmbd_work *work,
7548 struct smb2_ioctl_req *req,
7549 struct resume_key_ioctl_rsp *key_rsp)
7551 struct ksmbd_file *fp;
7553 fp = ksmbd_lookup_fd_slow(work, req->VolatileFileId, req->PersistentFileId);
7557 memset(key_rsp, 0, sizeof(*key_rsp));
7558 key_rsp->ResumeKey[0] = req->VolatileFileId;
7559 key_rsp->ResumeKey[1] = req->PersistentFileId;
7560 ksmbd_fd_put(work, fp);
7566 * smb2_ioctl() - handler for smb2 ioctl command
7567 * @work: smb work containing ioctl command buffer
7569 * Return: 0 on success, otherwise error
7571 int smb2_ioctl(struct ksmbd_work *work)
7573 struct smb2_ioctl_req *req;
7574 struct smb2_ioctl_rsp *rsp;
7575 unsigned int cnt_code, nbytes = 0, out_buf_len, in_buf_len;
7576 u64 id = KSMBD_NO_FID;
7577 struct ksmbd_conn *conn = work->conn;
7580 if (work->next_smb2_rcv_hdr_off) {
7581 req = ksmbd_req_buf_next(work);
7582 rsp = ksmbd_resp_buf_next(work);
7583 if (!has_file_id(req->VolatileFileId)) {
7584 ksmbd_debug(SMB, "Compound request set FID = %llu\n",
7585 work->compound_fid);
7586 id = work->compound_fid;
7589 req = smb2_get_msg(work->request_buf);
7590 rsp = smb2_get_msg(work->response_buf);
7593 if (!has_file_id(id))
7594 id = req->VolatileFileId;
7596 if (req->Flags != cpu_to_le32(SMB2_0_IOCTL_IS_FSCTL)) {
7597 rsp->hdr.Status = STATUS_NOT_SUPPORTED;
7601 cnt_code = le32_to_cpu(req->CtlCode);
7602 ret = smb2_calc_max_out_buf_len(work, 48,
7603 le32_to_cpu(req->MaxOutputResponse));
7605 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
7608 out_buf_len = (unsigned int)ret;
7609 in_buf_len = le32_to_cpu(req->InputCount);
7612 case FSCTL_DFS_GET_REFERRALS:
7613 case FSCTL_DFS_GET_REFERRALS_EX:
7614 /* Not support DFS yet */
7615 rsp->hdr.Status = STATUS_FS_DRIVER_REQUIRED;
7617 case FSCTL_CREATE_OR_GET_OBJECT_ID:
7619 struct file_object_buf_type1_ioctl_rsp *obj_buf;
7621 nbytes = sizeof(struct file_object_buf_type1_ioctl_rsp);
7622 obj_buf = (struct file_object_buf_type1_ioctl_rsp *)
7626 * TODO: This is dummy implementation to pass smbtorture
7627 * Need to check correct response later
7629 memset(obj_buf->ObjectId, 0x0, 16);
7630 memset(obj_buf->BirthVolumeId, 0x0, 16);
7631 memset(obj_buf->BirthObjectId, 0x0, 16);
7632 memset(obj_buf->DomainId, 0x0, 16);
7636 case FSCTL_PIPE_TRANSCEIVE:
7637 out_buf_len = min_t(u32, KSMBD_IPC_MAX_PAYLOAD, out_buf_len);
7638 nbytes = fsctl_pipe_transceive(work, id, out_buf_len, req, rsp);
7640 case FSCTL_VALIDATE_NEGOTIATE_INFO:
7641 if (conn->dialect < SMB30_PROT_ID) {
7646 if (in_buf_len < sizeof(struct validate_negotiate_info_req))
7649 if (out_buf_len < sizeof(struct validate_negotiate_info_rsp))
7652 ret = fsctl_validate_negotiate_info(conn,
7653 (struct validate_negotiate_info_req *)&req->Buffer[0],
7654 (struct validate_negotiate_info_rsp *)&rsp->Buffer[0],
7659 nbytes = sizeof(struct validate_negotiate_info_rsp);
7660 rsp->PersistentFileId = SMB2_NO_FID;
7661 rsp->VolatileFileId = SMB2_NO_FID;
7663 case FSCTL_QUERY_NETWORK_INTERFACE_INFO:
7664 ret = fsctl_query_iface_info_ioctl(conn, rsp, out_buf_len);
7669 case FSCTL_REQUEST_RESUME_KEY:
7670 if (out_buf_len < sizeof(struct resume_key_ioctl_rsp)) {
7675 ret = fsctl_request_resume_key(work, req,
7676 (struct resume_key_ioctl_rsp *)&rsp->Buffer[0]);
7679 rsp->PersistentFileId = req->PersistentFileId;
7680 rsp->VolatileFileId = req->VolatileFileId;
7681 nbytes = sizeof(struct resume_key_ioctl_rsp);
7683 case FSCTL_COPYCHUNK:
7684 case FSCTL_COPYCHUNK_WRITE:
7685 if (!test_tree_conn_flag(work->tcon, KSMBD_TREE_CONN_FLAG_WRITABLE)) {
7687 "User does not have write permission\n");
7692 if (in_buf_len < sizeof(struct copychunk_ioctl_req)) {
7697 if (out_buf_len < sizeof(struct copychunk_ioctl_rsp)) {
7702 nbytes = sizeof(struct copychunk_ioctl_rsp);
7703 rsp->VolatileFileId = req->VolatileFileId;
7704 rsp->PersistentFileId = req->PersistentFileId;
7705 fsctl_copychunk(work,
7706 (struct copychunk_ioctl_req *)&req->Buffer[0],
7707 le32_to_cpu(req->CtlCode),
7708 le32_to_cpu(req->InputCount),
7709 req->VolatileFileId,
7710 req->PersistentFileId,
7713 case FSCTL_SET_SPARSE:
7714 if (in_buf_len < sizeof(struct file_sparse)) {
7719 ret = fsctl_set_sparse(work, id,
7720 (struct file_sparse *)&req->Buffer[0]);
7724 case FSCTL_SET_ZERO_DATA:
7726 struct file_zero_data_information *zero_data;
7727 struct ksmbd_file *fp;
7728 loff_t off, len, bfz;
7730 if (!test_tree_conn_flag(work->tcon, KSMBD_TREE_CONN_FLAG_WRITABLE)) {
7732 "User does not have write permission\n");
7737 if (in_buf_len < sizeof(struct file_zero_data_information)) {
7743 (struct file_zero_data_information *)&req->Buffer[0];
7745 off = le64_to_cpu(zero_data->FileOffset);
7746 bfz = le64_to_cpu(zero_data->BeyondFinalZero);
7754 fp = ksmbd_lookup_fd_fast(work, id);
7760 ret = ksmbd_vfs_zero_data(work, fp, off, len);
7761 ksmbd_fd_put(work, fp);
7767 case FSCTL_QUERY_ALLOCATED_RANGES:
7768 if (in_buf_len < sizeof(struct file_allocated_range_buffer)) {
7773 ret = fsctl_query_allocated_ranges(work, id,
7774 (struct file_allocated_range_buffer *)&req->Buffer[0],
7775 (struct file_allocated_range_buffer *)&rsp->Buffer[0],
7777 sizeof(struct file_allocated_range_buffer), &nbytes);
7778 if (ret == -E2BIG) {
7779 rsp->hdr.Status = STATUS_BUFFER_OVERFLOW;
7780 } else if (ret < 0) {
7785 nbytes *= sizeof(struct file_allocated_range_buffer);
7787 case FSCTL_GET_REPARSE_POINT:
7789 struct reparse_data_buffer *reparse_ptr;
7790 struct ksmbd_file *fp;
7792 reparse_ptr = (struct reparse_data_buffer *)&rsp->Buffer[0];
7793 fp = ksmbd_lookup_fd_fast(work, id);
7795 pr_err("not found fp!!\n");
7800 reparse_ptr->ReparseTag =
7801 smb2_get_reparse_tag_special_file(file_inode(fp->filp)->i_mode);
7802 reparse_ptr->ReparseDataLength = 0;
7803 ksmbd_fd_put(work, fp);
7804 nbytes = sizeof(struct reparse_data_buffer);
7807 case FSCTL_DUPLICATE_EXTENTS_TO_FILE:
7809 struct ksmbd_file *fp_in, *fp_out = NULL;
7810 struct duplicate_extents_to_file *dup_ext;
7811 loff_t src_off, dst_off, length, cloned;
7813 if (in_buf_len < sizeof(struct duplicate_extents_to_file)) {
7818 dup_ext = (struct duplicate_extents_to_file *)&req->Buffer[0];
7820 fp_in = ksmbd_lookup_fd_slow(work, dup_ext->VolatileFileHandle,
7821 dup_ext->PersistentFileHandle);
7823 pr_err("not found file handle in duplicate extent to file\n");
7828 fp_out = ksmbd_lookup_fd_fast(work, id);
7830 pr_err("not found fp\n");
7835 src_off = le64_to_cpu(dup_ext->SourceFileOffset);
7836 dst_off = le64_to_cpu(dup_ext->TargetFileOffset);
7837 length = le64_to_cpu(dup_ext->ByteCount);
7839 * XXX: It is not clear if FSCTL_DUPLICATE_EXTENTS_TO_FILE
7840 * should fall back to vfs_copy_file_range(). This could be
7841 * beneficial when re-exporting nfs/smb mount, but note that
7842 * this can result in partial copy that returns an error status.
7843 * If/when FSCTL_DUPLICATE_EXTENTS_TO_FILE_EX is implemented,
7844 * fall back to vfs_copy_file_range(), should be avoided when
7845 * the flag DUPLICATE_EXTENTS_DATA_EX_SOURCE_ATOMIC is set.
7847 cloned = vfs_clone_file_range(fp_in->filp, src_off,
7848 fp_out->filp, dst_off, length, 0);
7849 if (cloned == -EXDEV || cloned == -EOPNOTSUPP) {
7852 } else if (cloned != length) {
7853 cloned = vfs_copy_file_range(fp_in->filp, src_off,
7854 fp_out->filp, dst_off,
7856 if (cloned != length) {
7865 ksmbd_fd_put(work, fp_in);
7866 ksmbd_fd_put(work, fp_out);
7872 ksmbd_debug(SMB, "not implemented yet ioctl command 0x%x\n",
7878 rsp->CtlCode = cpu_to_le32(cnt_code);
7879 rsp->InputCount = cpu_to_le32(0);
7880 rsp->InputOffset = cpu_to_le32(112);
7881 rsp->OutputOffset = cpu_to_le32(112);
7882 rsp->OutputCount = cpu_to_le32(nbytes);
7883 rsp->StructureSize = cpu_to_le16(49);
7884 rsp->Reserved = cpu_to_le16(0);
7885 rsp->Flags = cpu_to_le32(0);
7886 rsp->Reserved2 = cpu_to_le32(0);
7887 inc_rfc1001_len(work->response_buf, 48 + nbytes);
7893 rsp->hdr.Status = STATUS_ACCESS_DENIED;
7894 else if (ret == -ENOENT)
7895 rsp->hdr.Status = STATUS_OBJECT_NAME_NOT_FOUND;
7896 else if (ret == -EOPNOTSUPP)
7897 rsp->hdr.Status = STATUS_NOT_SUPPORTED;
7898 else if (ret == -ENOSPC)
7899 rsp->hdr.Status = STATUS_BUFFER_TOO_SMALL;
7900 else if (ret < 0 || rsp->hdr.Status == 0)
7901 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
7902 smb2_set_err_rsp(work);
7907 * smb20_oplock_break_ack() - handler for smb2.0 oplock break command
7908 * @work: smb work containing oplock break command buffer
7912 static void smb20_oplock_break_ack(struct ksmbd_work *work)
7914 struct smb2_oplock_break *req = smb2_get_msg(work->request_buf);
7915 struct smb2_oplock_break *rsp = smb2_get_msg(work->response_buf);
7916 struct ksmbd_file *fp;
7917 struct oplock_info *opinfo = NULL;
7920 u64 volatile_id, persistent_id;
7921 char req_oplevel = 0, rsp_oplevel = 0;
7922 unsigned int oplock_change_type;
7924 volatile_id = req->VolatileFid;
7925 persistent_id = req->PersistentFid;
7926 req_oplevel = req->OplockLevel;
7927 ksmbd_debug(OPLOCK, "v_id %llu, p_id %llu request oplock level %d\n",
7928 volatile_id, persistent_id, req_oplevel);
7930 fp = ksmbd_lookup_fd_slow(work, volatile_id, persistent_id);
7932 rsp->hdr.Status = STATUS_FILE_CLOSED;
7933 smb2_set_err_rsp(work);
7937 opinfo = opinfo_get(fp);
7939 pr_err("unexpected null oplock_info\n");
7940 rsp->hdr.Status = STATUS_INVALID_OPLOCK_PROTOCOL;
7941 smb2_set_err_rsp(work);
7942 ksmbd_fd_put(work, fp);
7946 if (opinfo->level == SMB2_OPLOCK_LEVEL_NONE) {
7947 rsp->hdr.Status = STATUS_INVALID_OPLOCK_PROTOCOL;
7951 if (opinfo->op_state == OPLOCK_STATE_NONE) {
7952 ksmbd_debug(SMB, "unexpected oplock state 0x%x\n", opinfo->op_state);
7953 rsp->hdr.Status = STATUS_UNSUCCESSFUL;
7957 if ((opinfo->level == SMB2_OPLOCK_LEVEL_EXCLUSIVE ||
7958 opinfo->level == SMB2_OPLOCK_LEVEL_BATCH) &&
7959 (req_oplevel != SMB2_OPLOCK_LEVEL_II &&
7960 req_oplevel != SMB2_OPLOCK_LEVEL_NONE)) {
7961 err = STATUS_INVALID_OPLOCK_PROTOCOL;
7962 oplock_change_type = OPLOCK_WRITE_TO_NONE;
7963 } else if (opinfo->level == SMB2_OPLOCK_LEVEL_II &&
7964 req_oplevel != SMB2_OPLOCK_LEVEL_NONE) {
7965 err = STATUS_INVALID_OPLOCK_PROTOCOL;
7966 oplock_change_type = OPLOCK_READ_TO_NONE;
7967 } else if (req_oplevel == SMB2_OPLOCK_LEVEL_II ||
7968 req_oplevel == SMB2_OPLOCK_LEVEL_NONE) {
7969 err = STATUS_INVALID_DEVICE_STATE;
7970 if ((opinfo->level == SMB2_OPLOCK_LEVEL_EXCLUSIVE ||
7971 opinfo->level == SMB2_OPLOCK_LEVEL_BATCH) &&
7972 req_oplevel == SMB2_OPLOCK_LEVEL_II) {
7973 oplock_change_type = OPLOCK_WRITE_TO_READ;
7974 } else if ((opinfo->level == SMB2_OPLOCK_LEVEL_EXCLUSIVE ||
7975 opinfo->level == SMB2_OPLOCK_LEVEL_BATCH) &&
7976 req_oplevel == SMB2_OPLOCK_LEVEL_NONE) {
7977 oplock_change_type = OPLOCK_WRITE_TO_NONE;
7978 } else if (opinfo->level == SMB2_OPLOCK_LEVEL_II &&
7979 req_oplevel == SMB2_OPLOCK_LEVEL_NONE) {
7980 oplock_change_type = OPLOCK_READ_TO_NONE;
7982 oplock_change_type = 0;
7985 oplock_change_type = 0;
7988 switch (oplock_change_type) {
7989 case OPLOCK_WRITE_TO_READ:
7990 ret = opinfo_write_to_read(opinfo);
7991 rsp_oplevel = SMB2_OPLOCK_LEVEL_II;
7993 case OPLOCK_WRITE_TO_NONE:
7994 ret = opinfo_write_to_none(opinfo);
7995 rsp_oplevel = SMB2_OPLOCK_LEVEL_NONE;
7997 case OPLOCK_READ_TO_NONE:
7998 ret = opinfo_read_to_none(opinfo);
7999 rsp_oplevel = SMB2_OPLOCK_LEVEL_NONE;
8002 pr_err("unknown oplock change 0x%x -> 0x%x\n",
8003 opinfo->level, rsp_oplevel);
8007 rsp->hdr.Status = err;
8012 ksmbd_fd_put(work, fp);
8013 opinfo->op_state = OPLOCK_STATE_NONE;
8014 wake_up_interruptible_all(&opinfo->oplock_q);
8016 rsp->StructureSize = cpu_to_le16(24);
8017 rsp->OplockLevel = rsp_oplevel;
8020 rsp->VolatileFid = volatile_id;
8021 rsp->PersistentFid = persistent_id;
8022 inc_rfc1001_len(work->response_buf, 24);
8026 opinfo->op_state = OPLOCK_STATE_NONE;
8027 wake_up_interruptible_all(&opinfo->oplock_q);
8030 ksmbd_fd_put(work, fp);
8031 smb2_set_err_rsp(work);
8034 static int check_lease_state(struct lease *lease, __le32 req_state)
8036 if ((lease->new_state ==
8037 (SMB2_LEASE_READ_CACHING_LE | SMB2_LEASE_HANDLE_CACHING_LE)) &&
8038 !(req_state & SMB2_LEASE_WRITE_CACHING_LE)) {
8039 lease->new_state = req_state;
8043 if (lease->new_state == req_state)
8050 * smb21_lease_break_ack() - handler for smb2.1 lease break command
8051 * @work: smb work containing lease break command buffer
8055 static void smb21_lease_break_ack(struct ksmbd_work *work)
8057 struct ksmbd_conn *conn = work->conn;
8058 struct smb2_lease_ack *req = smb2_get_msg(work->request_buf);
8059 struct smb2_lease_ack *rsp = smb2_get_msg(work->response_buf);
8060 struct oplock_info *opinfo;
8063 unsigned int lease_change_type;
8065 struct lease *lease;
8067 ksmbd_debug(OPLOCK, "smb21 lease break, lease state(0x%x)\n",
8068 le32_to_cpu(req->LeaseState));
8069 opinfo = lookup_lease_in_table(conn, req->LeaseKey);
8071 ksmbd_debug(OPLOCK, "file not opened\n");
8072 smb2_set_err_rsp(work);
8073 rsp->hdr.Status = STATUS_UNSUCCESSFUL;
8076 lease = opinfo->o_lease;
8078 if (opinfo->op_state == OPLOCK_STATE_NONE) {
8079 pr_err("unexpected lease break state 0x%x\n",
8081 rsp->hdr.Status = STATUS_UNSUCCESSFUL;
8085 if (check_lease_state(lease, req->LeaseState)) {
8086 rsp->hdr.Status = STATUS_REQUEST_NOT_ACCEPTED;
8088 "req lease state: 0x%x, expected state: 0x%x\n",
8089 req->LeaseState, lease->new_state);
8093 if (!atomic_read(&opinfo->breaking_cnt)) {
8094 rsp->hdr.Status = STATUS_UNSUCCESSFUL;
8098 /* check for bad lease state */
8099 if (req->LeaseState &
8100 (~(SMB2_LEASE_READ_CACHING_LE | SMB2_LEASE_HANDLE_CACHING_LE))) {
8101 err = STATUS_INVALID_OPLOCK_PROTOCOL;
8102 if (lease->state & SMB2_LEASE_WRITE_CACHING_LE)
8103 lease_change_type = OPLOCK_WRITE_TO_NONE;
8105 lease_change_type = OPLOCK_READ_TO_NONE;
8106 ksmbd_debug(OPLOCK, "handle bad lease state 0x%x -> 0x%x\n",
8107 le32_to_cpu(lease->state),
8108 le32_to_cpu(req->LeaseState));
8109 } else if (lease->state == SMB2_LEASE_READ_CACHING_LE &&
8110 req->LeaseState != SMB2_LEASE_NONE_LE) {
8111 err = STATUS_INVALID_OPLOCK_PROTOCOL;
8112 lease_change_type = OPLOCK_READ_TO_NONE;
8113 ksmbd_debug(OPLOCK, "handle bad lease state 0x%x -> 0x%x\n",
8114 le32_to_cpu(lease->state),
8115 le32_to_cpu(req->LeaseState));
8117 /* valid lease state changes */
8118 err = STATUS_INVALID_DEVICE_STATE;
8119 if (req->LeaseState == SMB2_LEASE_NONE_LE) {
8120 if (lease->state & SMB2_LEASE_WRITE_CACHING_LE)
8121 lease_change_type = OPLOCK_WRITE_TO_NONE;
8123 lease_change_type = OPLOCK_READ_TO_NONE;
8124 } else if (req->LeaseState & SMB2_LEASE_READ_CACHING_LE) {
8125 if (lease->state & SMB2_LEASE_WRITE_CACHING_LE)
8126 lease_change_type = OPLOCK_WRITE_TO_READ;
8128 lease_change_type = OPLOCK_READ_HANDLE_TO_READ;
8130 lease_change_type = 0;
8134 switch (lease_change_type) {
8135 case OPLOCK_WRITE_TO_READ:
8136 ret = opinfo_write_to_read(opinfo);
8138 case OPLOCK_READ_HANDLE_TO_READ:
8139 ret = opinfo_read_handle_to_read(opinfo);
8141 case OPLOCK_WRITE_TO_NONE:
8142 ret = opinfo_write_to_none(opinfo);
8144 case OPLOCK_READ_TO_NONE:
8145 ret = opinfo_read_to_none(opinfo);
8148 ksmbd_debug(OPLOCK, "unknown lease change 0x%x -> 0x%x\n",
8149 le32_to_cpu(lease->state),
8150 le32_to_cpu(req->LeaseState));
8153 lease_state = lease->state;
8154 opinfo->op_state = OPLOCK_STATE_NONE;
8155 wake_up_interruptible_all(&opinfo->oplock_q);
8156 atomic_dec(&opinfo->breaking_cnt);
8157 wake_up_interruptible_all(&opinfo->oplock_brk);
8161 rsp->hdr.Status = err;
8165 rsp->StructureSize = cpu_to_le16(36);
8168 memcpy(rsp->LeaseKey, req->LeaseKey, 16);
8169 rsp->LeaseState = lease_state;
8170 rsp->LeaseDuration = 0;
8171 inc_rfc1001_len(work->response_buf, 36);
8175 opinfo->op_state = OPLOCK_STATE_NONE;
8176 wake_up_interruptible_all(&opinfo->oplock_q);
8177 atomic_dec(&opinfo->breaking_cnt);
8178 wake_up_interruptible_all(&opinfo->oplock_brk);
8181 smb2_set_err_rsp(work);
8185 * smb2_oplock_break() - dispatcher for smb2.0 and 2.1 oplock/lease break
8186 * @work: smb work containing oplock/lease break command buffer
8190 int smb2_oplock_break(struct ksmbd_work *work)
8192 struct smb2_oplock_break *req = smb2_get_msg(work->request_buf);
8193 struct smb2_oplock_break *rsp = smb2_get_msg(work->response_buf);
8195 switch (le16_to_cpu(req->StructureSize)) {
8196 case OP_BREAK_STRUCT_SIZE_20:
8197 smb20_oplock_break_ack(work);
8199 case OP_BREAK_STRUCT_SIZE_21:
8200 smb21_lease_break_ack(work);
8203 ksmbd_debug(OPLOCK, "invalid break cmd %d\n",
8204 le16_to_cpu(req->StructureSize));
8205 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
8206 smb2_set_err_rsp(work);
8213 * smb2_notify() - handler for smb2 notify request
8214 * @work: smb work containing notify command buffer
8218 int smb2_notify(struct ksmbd_work *work)
8220 struct smb2_change_notify_req *req;
8221 struct smb2_change_notify_rsp *rsp;
8223 WORK_BUFFERS(work, req, rsp);
8225 if (work->next_smb2_rcv_hdr_off && req->hdr.NextCommand) {
8226 rsp->hdr.Status = STATUS_INTERNAL_ERROR;
8227 smb2_set_err_rsp(work);
8231 smb2_set_err_rsp(work);
8232 rsp->hdr.Status = STATUS_NOT_IMPLEMENTED;
8237 * smb2_is_sign_req() - handler for checking packet signing status
8238 * @work: smb work containing notify command buffer
8239 * @command: SMB2 command id
8241 * Return: true if packed is signed, false otherwise
8243 bool smb2_is_sign_req(struct ksmbd_work *work, unsigned int command)
8245 struct smb2_hdr *rcv_hdr2 = smb2_get_msg(work->request_buf);
8247 if ((rcv_hdr2->Flags & SMB2_FLAGS_SIGNED) &&
8248 command != SMB2_NEGOTIATE_HE &&
8249 command != SMB2_SESSION_SETUP_HE &&
8250 command != SMB2_OPLOCK_BREAK_HE)
8257 * smb2_check_sign_req() - handler for req packet sign processing
8258 * @work: smb work containing notify command buffer
8260 * Return: 1 on success, 0 otherwise
8262 int smb2_check_sign_req(struct ksmbd_work *work)
8264 struct smb2_hdr *hdr;
8265 char signature_req[SMB2_SIGNATURE_SIZE];
8266 char signature[SMB2_HMACSHA256_SIZE];
8270 hdr = smb2_get_msg(work->request_buf);
8271 if (work->next_smb2_rcv_hdr_off)
8272 hdr = ksmbd_req_buf_next(work);
8274 if (!hdr->NextCommand && !work->next_smb2_rcv_hdr_off)
8275 len = get_rfc1002_len(work->request_buf);
8276 else if (hdr->NextCommand)
8277 len = le32_to_cpu(hdr->NextCommand);
8279 len = get_rfc1002_len(work->request_buf) -
8280 work->next_smb2_rcv_hdr_off;
8282 memcpy(signature_req, hdr->Signature, SMB2_SIGNATURE_SIZE);
8283 memset(hdr->Signature, 0, SMB2_SIGNATURE_SIZE);
8285 iov[0].iov_base = (char *)&hdr->ProtocolId;
8286 iov[0].iov_len = len;
8288 if (ksmbd_sign_smb2_pdu(work->conn, work->sess->sess_key, iov, 1,
8292 if (memcmp(signature, signature_req, SMB2_SIGNATURE_SIZE)) {
8293 pr_err("bad smb2 signature\n");
8301 * smb2_set_sign_rsp() - handler for rsp packet sign processing
8302 * @work: smb work containing notify command buffer
8305 void smb2_set_sign_rsp(struct ksmbd_work *work)
8307 struct smb2_hdr *hdr;
8308 struct smb2_hdr *req_hdr;
8309 char signature[SMB2_HMACSHA256_SIZE];
8314 hdr = smb2_get_msg(work->response_buf);
8315 if (work->next_smb2_rsp_hdr_off)
8316 hdr = ksmbd_resp_buf_next(work);
8318 req_hdr = ksmbd_req_buf_next(work);
8320 if (!work->next_smb2_rsp_hdr_off) {
8321 len = get_rfc1002_len(work->response_buf);
8322 if (req_hdr->NextCommand)
8323 len = ALIGN(len, 8);
8325 len = get_rfc1002_len(work->response_buf) -
8326 work->next_smb2_rsp_hdr_off;
8327 len = ALIGN(len, 8);
8330 if (req_hdr->NextCommand)
8331 hdr->NextCommand = cpu_to_le32(len);
8333 hdr->Flags |= SMB2_FLAGS_SIGNED;
8334 memset(hdr->Signature, 0, SMB2_SIGNATURE_SIZE);
8336 iov[0].iov_base = (char *)&hdr->ProtocolId;
8337 iov[0].iov_len = len;
8339 if (work->aux_payload_sz) {
8340 iov[0].iov_len -= work->aux_payload_sz;
8342 iov[1].iov_base = work->aux_payload_buf;
8343 iov[1].iov_len = work->aux_payload_sz;
8347 if (!ksmbd_sign_smb2_pdu(work->conn, work->sess->sess_key, iov, n_vec,
8349 memcpy(hdr->Signature, signature, SMB2_SIGNATURE_SIZE);
8353 * smb3_check_sign_req() - handler for req packet sign processing
8354 * @work: smb work containing notify command buffer
8356 * Return: 1 on success, 0 otherwise
8358 int smb3_check_sign_req(struct ksmbd_work *work)
8360 struct ksmbd_conn *conn = work->conn;
8362 struct smb2_hdr *hdr;
8363 struct channel *chann;
8364 char signature_req[SMB2_SIGNATURE_SIZE];
8365 char signature[SMB2_CMACAES_SIZE];
8369 hdr = smb2_get_msg(work->request_buf);
8370 if (work->next_smb2_rcv_hdr_off)
8371 hdr = ksmbd_req_buf_next(work);
8373 if (!hdr->NextCommand && !work->next_smb2_rcv_hdr_off)
8374 len = get_rfc1002_len(work->request_buf);
8375 else if (hdr->NextCommand)
8376 len = le32_to_cpu(hdr->NextCommand);
8378 len = get_rfc1002_len(work->request_buf) -
8379 work->next_smb2_rcv_hdr_off;
8381 if (le16_to_cpu(hdr->Command) == SMB2_SESSION_SETUP_HE) {
8382 signing_key = work->sess->smb3signingkey;
8384 read_lock(&work->sess->chann_lock);
8385 chann = lookup_chann_list(work->sess, conn);
8387 read_unlock(&work->sess->chann_lock);
8390 signing_key = chann->smb3signingkey;
8391 read_unlock(&work->sess->chann_lock);
8395 pr_err("SMB3 signing key is not generated\n");
8399 memcpy(signature_req, hdr->Signature, SMB2_SIGNATURE_SIZE);
8400 memset(hdr->Signature, 0, SMB2_SIGNATURE_SIZE);
8401 iov[0].iov_base = (char *)&hdr->ProtocolId;
8402 iov[0].iov_len = len;
8404 if (ksmbd_sign_smb3_pdu(conn, signing_key, iov, 1, signature))
8407 if (memcmp(signature, signature_req, SMB2_SIGNATURE_SIZE)) {
8408 pr_err("bad smb2 signature\n");
8416 * smb3_set_sign_rsp() - handler for rsp packet sign processing
8417 * @work: smb work containing notify command buffer
8420 void smb3_set_sign_rsp(struct ksmbd_work *work)
8422 struct ksmbd_conn *conn = work->conn;
8423 struct smb2_hdr *req_hdr, *hdr;
8424 struct channel *chann;
8425 char signature[SMB2_CMACAES_SIZE];
8431 hdr = smb2_get_msg(work->response_buf);
8432 if (work->next_smb2_rsp_hdr_off)
8433 hdr = ksmbd_resp_buf_next(work);
8435 req_hdr = ksmbd_req_buf_next(work);
8437 if (!work->next_smb2_rsp_hdr_off) {
8438 len = get_rfc1002_len(work->response_buf);
8439 if (req_hdr->NextCommand)
8440 len = ALIGN(len, 8);
8442 len = get_rfc1002_len(work->response_buf) -
8443 work->next_smb2_rsp_hdr_off;
8444 len = ALIGN(len, 8);
8447 if (conn->binding == false &&
8448 le16_to_cpu(hdr->Command) == SMB2_SESSION_SETUP_HE) {
8449 signing_key = work->sess->smb3signingkey;
8451 read_lock(&work->sess->chann_lock);
8452 chann = lookup_chann_list(work->sess, work->conn);
8454 read_unlock(&work->sess->chann_lock);
8457 signing_key = chann->smb3signingkey;
8458 read_unlock(&work->sess->chann_lock);
8464 if (req_hdr->NextCommand)
8465 hdr->NextCommand = cpu_to_le32(len);
8467 hdr->Flags |= SMB2_FLAGS_SIGNED;
8468 memset(hdr->Signature, 0, SMB2_SIGNATURE_SIZE);
8469 iov[0].iov_base = (char *)&hdr->ProtocolId;
8470 iov[0].iov_len = len;
8471 if (work->aux_payload_sz) {
8472 iov[0].iov_len -= work->aux_payload_sz;
8473 iov[1].iov_base = work->aux_payload_buf;
8474 iov[1].iov_len = work->aux_payload_sz;
8478 if (!ksmbd_sign_smb3_pdu(conn, signing_key, iov, n_vec, signature))
8479 memcpy(hdr->Signature, signature, SMB2_SIGNATURE_SIZE);
8483 * smb3_preauth_hash_rsp() - handler for computing preauth hash on response
8484 * @work: smb work containing response buffer
8487 void smb3_preauth_hash_rsp(struct ksmbd_work *work)
8489 struct ksmbd_conn *conn = work->conn;
8490 struct ksmbd_session *sess = work->sess;
8491 struct smb2_hdr *req, *rsp;
8493 if (conn->dialect != SMB311_PROT_ID)
8496 WORK_BUFFERS(work, req, rsp);
8498 if (le16_to_cpu(req->Command) == SMB2_NEGOTIATE_HE &&
8500 ksmbd_gen_preauth_integrity_hash(conn, work->response_buf,
8501 conn->preauth_info->Preauth_HashValue);
8503 if (le16_to_cpu(rsp->Command) == SMB2_SESSION_SETUP_HE && sess) {
8506 if (conn->binding) {
8507 struct preauth_session *preauth_sess;
8509 preauth_sess = ksmbd_preauth_session_lookup(conn, sess->id);
8512 hash_value = preauth_sess->Preauth_HashValue;
8514 hash_value = sess->Preauth_HashValue;
8518 ksmbd_gen_preauth_integrity_hash(conn, work->response_buf,
8523 static void fill_transform_hdr(void *tr_buf, char *old_buf, __le16 cipher_type)
8525 struct smb2_transform_hdr *tr_hdr = tr_buf + 4;
8526 struct smb2_hdr *hdr = smb2_get_msg(old_buf);
8527 unsigned int orig_len = get_rfc1002_len(old_buf);
8529 /* tr_buf must be cleared by the caller */
8530 tr_hdr->ProtocolId = SMB2_TRANSFORM_PROTO_NUM;
8531 tr_hdr->OriginalMessageSize = cpu_to_le32(orig_len);
8532 tr_hdr->Flags = cpu_to_le16(TRANSFORM_FLAG_ENCRYPTED);
8533 if (cipher_type == SMB2_ENCRYPTION_AES128_GCM ||
8534 cipher_type == SMB2_ENCRYPTION_AES256_GCM)
8535 get_random_bytes(&tr_hdr->Nonce, SMB3_AES_GCM_NONCE);
8537 get_random_bytes(&tr_hdr->Nonce, SMB3_AES_CCM_NONCE);
8538 memcpy(&tr_hdr->SessionId, &hdr->SessionId, 8);
8539 inc_rfc1001_len(tr_buf, sizeof(struct smb2_transform_hdr));
8540 inc_rfc1001_len(tr_buf, orig_len);
8543 int smb3_encrypt_resp(struct ksmbd_work *work)
8545 char *buf = work->response_buf;
8548 int buf_size = 0, rq_nvec = 2 + (work->aux_payload_sz ? 1 : 0);
8550 if (ARRAY_SIZE(iov) < rq_nvec)
8553 work->tr_buf = kzalloc(sizeof(struct smb2_transform_hdr) + 4, GFP_KERNEL);
8557 /* fill transform header */
8558 fill_transform_hdr(work->tr_buf, buf, work->conn->cipher_type);
8560 iov[0].iov_base = work->tr_buf;
8561 iov[0].iov_len = sizeof(struct smb2_transform_hdr) + 4;
8562 buf_size += iov[0].iov_len - 4;
8564 iov[1].iov_base = buf + 4;
8565 iov[1].iov_len = get_rfc1002_len(buf);
8566 if (work->aux_payload_sz) {
8567 iov[1].iov_len = work->resp_hdr_sz - 4;
8569 iov[2].iov_base = work->aux_payload_buf;
8570 iov[2].iov_len = work->aux_payload_sz;
8571 buf_size += iov[2].iov_len;
8573 buf_size += iov[1].iov_len;
8574 work->resp_hdr_sz = iov[1].iov_len;
8576 rc = ksmbd_crypt_message(work->conn, iov, rq_nvec, 1);
8580 memmove(buf, iov[1].iov_base, iov[1].iov_len);
8581 *(__be32 *)work->tr_buf = cpu_to_be32(buf_size);
8586 bool smb3_is_transform_hdr(void *buf)
8588 struct smb2_transform_hdr *trhdr = smb2_get_msg(buf);
8590 return trhdr->ProtocolId == SMB2_TRANSFORM_PROTO_NUM;
8593 int smb3_decrypt_req(struct ksmbd_work *work)
8595 struct ksmbd_conn *conn = work->conn;
8596 struct ksmbd_session *sess;
8597 char *buf = work->request_buf;
8598 unsigned int pdu_length = get_rfc1002_len(buf);
8600 int buf_data_size = pdu_length - sizeof(struct smb2_transform_hdr);
8601 struct smb2_transform_hdr *tr_hdr = smb2_get_msg(buf);
8604 if (buf_data_size < sizeof(struct smb2_hdr)) {
8605 pr_err("Transform message is too small (%u)\n",
8607 return -ECONNABORTED;
8610 if (buf_data_size < le32_to_cpu(tr_hdr->OriginalMessageSize)) {
8611 pr_err("Transform message is broken\n");
8612 return -ECONNABORTED;
8615 sess = ksmbd_session_lookup_all(conn, le64_to_cpu(tr_hdr->SessionId));
8617 pr_err("invalid session id(%llx) in transform header\n",
8618 le64_to_cpu(tr_hdr->SessionId));
8619 return -ECONNABORTED;
8622 iov[0].iov_base = buf;
8623 iov[0].iov_len = sizeof(struct smb2_transform_hdr) + 4;
8624 iov[1].iov_base = buf + sizeof(struct smb2_transform_hdr) + 4;
8625 iov[1].iov_len = buf_data_size;
8626 rc = ksmbd_crypt_message(conn, iov, 2, 0);
8630 memmove(buf + 4, iov[1].iov_base, buf_data_size);
8631 *(__be32 *)buf = cpu_to_be32(buf_data_size);
8636 bool smb3_11_final_sess_setup_resp(struct ksmbd_work *work)
8638 struct ksmbd_conn *conn = work->conn;
8639 struct smb2_hdr *rsp = smb2_get_msg(work->response_buf);
8641 if (conn->dialect < SMB30_PROT_ID)
8644 if (work->next_smb2_rcv_hdr_off)
8645 rsp = ksmbd_resp_buf_next(work);
8647 if (le16_to_cpu(rsp->Command) == SMB2_SESSION_SETUP_HE &&
8648 rsp->Status == STATUS_SUCCESS)