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(conn->um, 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,
2188 const struct path *path)
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(const 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(const 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(const 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, const 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 const 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,
2450 const struct path *path)
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 vfsuid_t vfsuid = i_uid_into_vfsuid(mnt_userns, inode);
2481 vfsgid_t vfsgid = i_gid_into_vfsgid(mnt_userns, inode);
2483 fattr->cf_uid = vfsuid_into_kuid(vfsuid);
2484 fattr->cf_gid = vfsgid_into_kgid(vfsgid);
2485 fattr->cf_mode = inode->i_mode;
2486 fattr->cf_acls = NULL;
2487 fattr->cf_dacls = NULL;
2489 if (IS_ENABLED(CONFIG_FS_POSIX_ACL)) {
2490 fattr->cf_acls = get_acl(inode, ACL_TYPE_ACCESS);
2491 if (S_ISDIR(inode->i_mode))
2492 fattr->cf_dacls = get_acl(inode, ACL_TYPE_DEFAULT);
2497 * smb2_open() - handler for smb file open request
2498 * @work: smb work containing request buffer
2500 * Return: 0 on success, otherwise error
2502 int smb2_open(struct ksmbd_work *work)
2504 struct ksmbd_conn *conn = work->conn;
2505 struct ksmbd_session *sess = work->sess;
2506 struct ksmbd_tree_connect *tcon = work->tcon;
2507 struct smb2_create_req *req;
2508 struct smb2_create_rsp *rsp;
2510 struct ksmbd_share_config *share = tcon->share_conf;
2511 struct ksmbd_file *fp = NULL;
2512 struct file *filp = NULL;
2513 struct user_namespace *user_ns = NULL;
2515 struct create_context *context;
2516 struct lease_ctx_info *lc = NULL;
2517 struct create_ea_buf_req *ea_buf = NULL;
2518 struct oplock_info *opinfo;
2519 __le32 *next_ptr = NULL;
2520 int req_op_level = 0, open_flags = 0, may_flags = 0, file_info = 0;
2522 int contxt_cnt = 0, query_disk_id = 0;
2523 int maximal_access_ctxt = 0, posix_ctxt = 0;
2527 char *stream_name = NULL;
2528 bool file_present = false, created = false, already_permitted = false;
2529 int share_ret, need_truncate = 0;
2531 umode_t posix_mode = 0;
2532 __le32 daccess, maximal_access = 0;
2534 WORK_BUFFERS(work, req, rsp);
2536 if (req->hdr.NextCommand && !work->next_smb2_rcv_hdr_off &&
2537 (req->hdr.Flags & SMB2_FLAGS_RELATED_OPERATIONS)) {
2538 ksmbd_debug(SMB, "invalid flag in chained command\n");
2539 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
2540 smb2_set_err_rsp(work);
2544 if (test_share_config_flag(share, KSMBD_SHARE_FLAG_PIPE)) {
2545 ksmbd_debug(SMB, "IPC pipe create request\n");
2546 return create_smb2_pipe(work);
2549 if (req->NameLength) {
2550 if ((req->CreateOptions & FILE_DIRECTORY_FILE_LE) &&
2551 *(char *)req->Buffer == '\\') {
2552 pr_err("not allow directory name included leading slash\n");
2557 name = smb2_get_name(req->Buffer,
2558 le16_to_cpu(req->NameLength),
2559 work->conn->local_nls);
2568 ksmbd_debug(SMB, "converted name = %s\n", name);
2569 if (strchr(name, ':')) {
2570 if (!test_share_config_flag(work->tcon->share_conf,
2571 KSMBD_SHARE_FLAG_STREAMS)) {
2575 rc = parse_stream_name(name, &stream_name, &s_type);
2580 rc = ksmbd_validate_filename(name);
2584 if (ksmbd_share_veto_filename(share, name)) {
2586 ksmbd_debug(SMB, "Reject open(), vetoed file: %s\n",
2591 name = kstrdup("", GFP_KERNEL);
2598 req_op_level = req->RequestedOplockLevel;
2599 if (req_op_level == SMB2_OPLOCK_LEVEL_LEASE)
2600 lc = parse_lease_state(req);
2602 if (le32_to_cpu(req->ImpersonationLevel) > le32_to_cpu(IL_DELEGATE)) {
2603 pr_err("Invalid impersonationlevel : 0x%x\n",
2604 le32_to_cpu(req->ImpersonationLevel));
2606 rsp->hdr.Status = STATUS_BAD_IMPERSONATION_LEVEL;
2610 if (req->CreateOptions && !(req->CreateOptions & CREATE_OPTIONS_MASK_LE)) {
2611 pr_err("Invalid create options : 0x%x\n",
2612 le32_to_cpu(req->CreateOptions));
2616 if (req->CreateOptions & FILE_SEQUENTIAL_ONLY_LE &&
2617 req->CreateOptions & FILE_RANDOM_ACCESS_LE)
2618 req->CreateOptions = ~(FILE_SEQUENTIAL_ONLY_LE);
2620 if (req->CreateOptions &
2621 (FILE_OPEN_BY_FILE_ID_LE | CREATE_TREE_CONNECTION |
2622 FILE_RESERVE_OPFILTER_LE)) {
2627 if (req->CreateOptions & FILE_DIRECTORY_FILE_LE) {
2628 if (req->CreateOptions & FILE_NON_DIRECTORY_FILE_LE) {
2631 } else if (req->CreateOptions & FILE_NO_COMPRESSION_LE) {
2632 req->CreateOptions = ~(FILE_NO_COMPRESSION_LE);
2637 if (le32_to_cpu(req->CreateDisposition) >
2638 le32_to_cpu(FILE_OVERWRITE_IF_LE)) {
2639 pr_err("Invalid create disposition : 0x%x\n",
2640 le32_to_cpu(req->CreateDisposition));
2645 if (!(req->DesiredAccess & DESIRED_ACCESS_MASK)) {
2646 pr_err("Invalid desired access : 0x%x\n",
2647 le32_to_cpu(req->DesiredAccess));
2652 if (req->FileAttributes && !(req->FileAttributes & FILE_ATTRIBUTE_MASK_LE)) {
2653 pr_err("Invalid file attribute : 0x%x\n",
2654 le32_to_cpu(req->FileAttributes));
2659 if (req->CreateContextsOffset) {
2660 /* Parse non-durable handle create contexts */
2661 context = smb2_find_context_vals(req, SMB2_CREATE_EA_BUFFER);
2662 if (IS_ERR(context)) {
2663 rc = PTR_ERR(context);
2665 } else if (context) {
2666 ea_buf = (struct create_ea_buf_req *)context;
2667 if (le16_to_cpu(context->DataOffset) +
2668 le32_to_cpu(context->DataLength) <
2669 sizeof(struct create_ea_buf_req)) {
2673 if (req->CreateOptions & FILE_NO_EA_KNOWLEDGE_LE) {
2674 rsp->hdr.Status = STATUS_ACCESS_DENIED;
2680 context = smb2_find_context_vals(req,
2681 SMB2_CREATE_QUERY_MAXIMAL_ACCESS_REQUEST);
2682 if (IS_ERR(context)) {
2683 rc = PTR_ERR(context);
2685 } else if (context) {
2687 "get query maximal access context\n");
2688 maximal_access_ctxt = 1;
2691 context = smb2_find_context_vals(req,
2692 SMB2_CREATE_TIMEWARP_REQUEST);
2693 if (IS_ERR(context)) {
2694 rc = PTR_ERR(context);
2696 } else if (context) {
2697 ksmbd_debug(SMB, "get timewarp context\n");
2702 if (tcon->posix_extensions) {
2703 context = smb2_find_context_vals(req,
2704 SMB2_CREATE_TAG_POSIX);
2705 if (IS_ERR(context)) {
2706 rc = PTR_ERR(context);
2708 } else if (context) {
2709 struct create_posix *posix =
2710 (struct create_posix *)context;
2711 if (le16_to_cpu(context->DataOffset) +
2712 le32_to_cpu(context->DataLength) <
2713 sizeof(struct create_posix) - 4) {
2717 ksmbd_debug(SMB, "get posix context\n");
2719 posix_mode = le32_to_cpu(posix->Mode);
2725 if (ksmbd_override_fsids(work)) {
2730 rc = ksmbd_vfs_kern_path(work, name, LOOKUP_NO_SYMLINKS, &path, 1);
2732 if (req->CreateOptions & FILE_DELETE_ON_CLOSE_LE) {
2734 * If file exists with under flags, return access
2737 if (req->CreateDisposition == FILE_OVERWRITE_IF_LE ||
2738 req->CreateDisposition == FILE_OPEN_IF_LE) {
2744 if (!test_tree_conn_flag(tcon, KSMBD_TREE_CONN_FLAG_WRITABLE)) {
2746 "User does not have write permission\n");
2751 } else if (d_is_symlink(path.dentry)) {
2761 ksmbd_debug(SMB, "can not get linux path for %s, rc = %d\n",
2765 file_present = true;
2766 user_ns = mnt_user_ns(path.mnt);
2769 if (req->CreateOptions & FILE_DIRECTORY_FILE_LE) {
2770 if (s_type == DATA_STREAM) {
2772 rsp->hdr.Status = STATUS_NOT_A_DIRECTORY;
2775 if (file_present && S_ISDIR(d_inode(path.dentry)->i_mode) &&
2776 s_type == DATA_STREAM) {
2778 rsp->hdr.Status = STATUS_FILE_IS_A_DIRECTORY;
2782 if (req->CreateOptions & FILE_DIRECTORY_FILE_LE &&
2783 req->FileAttributes & FILE_ATTRIBUTE_NORMAL_LE) {
2784 rsp->hdr.Status = STATUS_NOT_A_DIRECTORY;
2792 if (file_present && req->CreateOptions & FILE_NON_DIRECTORY_FILE_LE &&
2793 S_ISDIR(d_inode(path.dentry)->i_mode) &&
2794 !(req->CreateOptions & FILE_DELETE_ON_CLOSE_LE)) {
2795 ksmbd_debug(SMB, "open() argument is a directory: %s, %x\n",
2796 name, req->CreateOptions);
2797 rsp->hdr.Status = STATUS_FILE_IS_A_DIRECTORY;
2802 if (file_present && (req->CreateOptions & FILE_DIRECTORY_FILE_LE) &&
2803 !(req->CreateDisposition == FILE_CREATE_LE) &&
2804 !S_ISDIR(d_inode(path.dentry)->i_mode)) {
2805 rsp->hdr.Status = STATUS_NOT_A_DIRECTORY;
2810 if (!stream_name && file_present &&
2811 req->CreateDisposition == FILE_CREATE_LE) {
2816 daccess = smb_map_generic_desired_access(req->DesiredAccess);
2818 if (file_present && !(req->CreateOptions & FILE_DELETE_ON_CLOSE_LE)) {
2819 rc = smb_check_perm_dacl(conn, &path, &daccess,
2825 if (daccess & FILE_MAXIMAL_ACCESS_LE) {
2826 if (!file_present) {
2827 daccess = cpu_to_le32(GENERIC_ALL_FLAGS);
2829 rc = ksmbd_vfs_query_maximal_access(user_ns,
2834 already_permitted = true;
2836 maximal_access = daccess;
2839 open_flags = smb2_create_open_flags(file_present, daccess,
2840 req->CreateDisposition,
2843 if (!test_tree_conn_flag(tcon, KSMBD_TREE_CONN_FLAG_WRITABLE)) {
2844 if (open_flags & O_CREAT) {
2846 "User does not have write permission\n");
2852 /*create file if not present */
2853 if (!file_present) {
2854 rc = smb2_creat(work, &path, name, open_flags, posix_mode,
2855 req->CreateOptions & FILE_DIRECTORY_FILE_LE);
2857 if (rc == -ENOENT) {
2859 rsp->hdr.Status = STATUS_OBJECT_PATH_NOT_FOUND;
2865 user_ns = mnt_user_ns(path.mnt);
2867 if (le32_to_cpu(ea_buf->ccontext.DataLength) <
2868 sizeof(struct smb2_ea_info)) {
2873 rc = smb2_set_ea(&ea_buf->ea,
2874 le32_to_cpu(ea_buf->ccontext.DataLength),
2876 if (rc == -EOPNOTSUPP)
2881 } else if (!already_permitted) {
2882 /* FILE_READ_ATTRIBUTE is allowed without inode_permission,
2883 * because execute(search) permission on a parent directory,
2884 * is already granted.
2886 if (daccess & ~(FILE_READ_ATTRIBUTES_LE | FILE_READ_CONTROL_LE)) {
2887 rc = inode_permission(user_ns,
2888 d_inode(path.dentry),
2893 if ((daccess & FILE_DELETE_LE) ||
2894 (req->CreateOptions & FILE_DELETE_ON_CLOSE_LE)) {
2895 rc = ksmbd_vfs_may_delete(user_ns,
2903 rc = ksmbd_query_inode_status(d_inode(path.dentry->d_parent));
2904 if (rc == KSMBD_INODE_STATUS_PENDING_DELETE) {
2910 filp = dentry_open(&path, open_flags, current_cred());
2913 pr_err("dentry open for dir failed, rc %d\n", rc);
2918 if (!(open_flags & O_TRUNC))
2919 file_info = FILE_OPENED;
2921 file_info = FILE_OVERWRITTEN;
2923 if ((req->CreateDisposition & FILE_CREATE_MASK_LE) ==
2925 file_info = FILE_SUPERSEDED;
2926 } else if (open_flags & O_CREAT) {
2927 file_info = FILE_CREATED;
2930 ksmbd_vfs_set_fadvise(filp, req->CreateOptions);
2932 /* Obtain Volatile-ID */
2933 fp = ksmbd_open_fd(work, filp);
2941 /* Get Persistent-ID */
2942 ksmbd_open_durable_fd(fp);
2943 if (!has_file_id(fp->persistent_id)) {
2948 fp->cdoption = req->CreateDisposition;
2949 fp->daccess = daccess;
2950 fp->saccess = req->ShareAccess;
2951 fp->coption = req->CreateOptions;
2953 /* Set default windows and posix acls if creating new file */
2956 struct inode *inode = d_inode(path.dentry);
2958 posix_acl_rc = ksmbd_vfs_inherit_posix_acl(user_ns,
2960 d_inode(path.dentry->d_parent));
2962 ksmbd_debug(SMB, "inherit posix acl failed : %d\n", posix_acl_rc);
2964 if (test_share_config_flag(work->tcon->share_conf,
2965 KSMBD_SHARE_FLAG_ACL_XATTR)) {
2966 rc = smb_inherit_dacl(conn, &path, sess->user->uid,
2971 rc = smb2_create_sd_buffer(work, req, &path);
2974 ksmbd_vfs_set_init_posix_acl(user_ns,
2977 if (test_share_config_flag(work->tcon->share_conf,
2978 KSMBD_SHARE_FLAG_ACL_XATTR)) {
2979 struct smb_fattr fattr;
2980 struct smb_ntsd *pntsd;
2981 int pntsd_size, ace_num = 0;
2983 ksmbd_acls_fattr(&fattr, user_ns, inode);
2985 ace_num = fattr.cf_acls->a_count;
2987 ace_num += fattr.cf_dacls->a_count;
2989 pntsd = kmalloc(sizeof(struct smb_ntsd) +
2990 sizeof(struct smb_sid) * 3 +
2991 sizeof(struct smb_acl) +
2992 sizeof(struct smb_ace) * ace_num * 2,
2997 rc = build_sec_desc(user_ns,
3002 &pntsd_size, &fattr);
3003 posix_acl_release(fattr.cf_acls);
3004 posix_acl_release(fattr.cf_dacls);
3010 rc = ksmbd_vfs_set_sd_xattr(conn,
3017 pr_err("failed to store ntacl in xattr : %d\n",
3026 rc = smb2_set_stream_name_xattr(&path,
3032 file_info = FILE_CREATED;
3035 fp->attrib_only = !(req->DesiredAccess & ~(FILE_READ_ATTRIBUTES_LE |
3036 FILE_WRITE_ATTRIBUTES_LE | FILE_SYNCHRONIZE_LE));
3037 if (!S_ISDIR(file_inode(filp)->i_mode) && open_flags & O_TRUNC &&
3038 !fp->attrib_only && !stream_name) {
3039 smb_break_all_oplock(work, fp);
3043 /* fp should be searchable through ksmbd_inode.m_fp_list
3044 * after daccess, saccess, attrib_only, and stream are
3047 write_lock(&fp->f_ci->m_lock);
3048 list_add(&fp->node, &fp->f_ci->m_fp_list);
3049 write_unlock(&fp->f_ci->m_lock);
3051 /* Check delete pending among previous fp before oplock break */
3052 if (ksmbd_inode_pending_delete(fp)) {
3057 share_ret = ksmbd_smb_check_shared_mode(fp->filp, fp);
3058 if (!test_share_config_flag(work->tcon->share_conf, KSMBD_SHARE_FLAG_OPLOCKS) ||
3059 (req_op_level == SMB2_OPLOCK_LEVEL_LEASE &&
3060 !(conn->vals->capabilities & SMB2_GLOBAL_CAP_LEASING))) {
3061 if (share_ret < 0 && !S_ISDIR(file_inode(fp->filp)->i_mode)) {
3066 if (req_op_level == SMB2_OPLOCK_LEVEL_LEASE) {
3067 req_op_level = smb2_map_lease_to_oplock(lc->req_state);
3069 "lease req for(%s) req oplock state 0x%x, lease state 0x%x\n",
3070 name, req_op_level, lc->req_state);
3071 rc = find_same_lease_key(sess, fp->f_ci, lc);
3074 } else if (open_flags == O_RDONLY &&
3075 (req_op_level == SMB2_OPLOCK_LEVEL_BATCH ||
3076 req_op_level == SMB2_OPLOCK_LEVEL_EXCLUSIVE))
3077 req_op_level = SMB2_OPLOCK_LEVEL_II;
3079 rc = smb_grant_oplock(work, req_op_level,
3080 fp->persistent_id, fp,
3081 le32_to_cpu(req->hdr.Id.SyncId.TreeId),
3087 if (req->CreateOptions & FILE_DELETE_ON_CLOSE_LE)
3088 ksmbd_fd_set_delete_on_close(fp, file_info);
3090 if (need_truncate) {
3091 rc = smb2_create_truncate(&path);
3096 if (req->CreateContextsOffset) {
3097 struct create_alloc_size_req *az_req;
3099 az_req = (struct create_alloc_size_req *)smb2_find_context_vals(req,
3100 SMB2_CREATE_ALLOCATION_SIZE);
3101 if (IS_ERR(az_req)) {
3102 rc = PTR_ERR(az_req);
3104 } else if (az_req) {
3108 if (le16_to_cpu(az_req->ccontext.DataOffset) +
3109 le32_to_cpu(az_req->ccontext.DataLength) <
3110 sizeof(struct create_alloc_size_req)) {
3114 alloc_size = le64_to_cpu(az_req->AllocationSize);
3116 "request smb2 create allocate size : %llu\n",
3118 smb_break_all_levII_oplock(work, fp, 1);
3119 err = vfs_fallocate(fp->filp, FALLOC_FL_KEEP_SIZE, 0,
3123 "vfs_fallocate is failed : %d\n",
3127 context = smb2_find_context_vals(req, SMB2_CREATE_QUERY_ON_DISK_ID);
3128 if (IS_ERR(context)) {
3129 rc = PTR_ERR(context);
3131 } else if (context) {
3132 ksmbd_debug(SMB, "get query on disk id context\n");
3137 rc = ksmbd_vfs_getattr(&path, &stat);
3141 if (stat.result_mask & STATX_BTIME)
3142 fp->create_time = ksmbd_UnixTimeToNT(stat.btime);
3144 fp->create_time = ksmbd_UnixTimeToNT(stat.ctime);
3145 if (req->FileAttributes || fp->f_ci->m_fattr == 0)
3147 cpu_to_le32(smb2_get_dos_mode(&stat, le32_to_cpu(req->FileAttributes)));
3150 smb2_update_xattrs(tcon, &path, fp);
3152 smb2_new_xattrs(tcon, &path, fp);
3154 memcpy(fp->client_guid, conn->ClientGUID, SMB2_CLIENT_GUID_SIZE);
3156 rsp->StructureSize = cpu_to_le16(89);
3158 opinfo = rcu_dereference(fp->f_opinfo);
3159 rsp->OplockLevel = opinfo != NULL ? opinfo->level : 0;
3162 rsp->CreateAction = cpu_to_le32(file_info);
3163 rsp->CreationTime = cpu_to_le64(fp->create_time);
3164 time = ksmbd_UnixTimeToNT(stat.atime);
3165 rsp->LastAccessTime = cpu_to_le64(time);
3166 time = ksmbd_UnixTimeToNT(stat.mtime);
3167 rsp->LastWriteTime = cpu_to_le64(time);
3168 time = ksmbd_UnixTimeToNT(stat.ctime);
3169 rsp->ChangeTime = cpu_to_le64(time);
3170 rsp->AllocationSize = S_ISDIR(stat.mode) ? 0 :
3171 cpu_to_le64(stat.blocks << 9);
3172 rsp->EndofFile = S_ISDIR(stat.mode) ? 0 : cpu_to_le64(stat.size);
3173 rsp->FileAttributes = fp->f_ci->m_fattr;
3177 rsp->PersistentFileId = fp->persistent_id;
3178 rsp->VolatileFileId = fp->volatile_id;
3180 rsp->CreateContextsOffset = 0;
3181 rsp->CreateContextsLength = 0;
3182 inc_rfc1001_len(work->response_buf, 88); /* StructureSize - 1*/
3184 /* If lease is request send lease context response */
3185 if (opinfo && opinfo->is_lease) {
3186 struct create_context *lease_ccontext;
3188 ksmbd_debug(SMB, "lease granted on(%s) lease state 0x%x\n",
3189 name, opinfo->o_lease->state);
3190 rsp->OplockLevel = SMB2_OPLOCK_LEVEL_LEASE;
3192 lease_ccontext = (struct create_context *)rsp->Buffer;
3194 create_lease_buf(rsp->Buffer, opinfo->o_lease);
3195 le32_add_cpu(&rsp->CreateContextsLength,
3196 conn->vals->create_lease_size);
3197 inc_rfc1001_len(work->response_buf,
3198 conn->vals->create_lease_size);
3199 next_ptr = &lease_ccontext->Next;
3200 next_off = conn->vals->create_lease_size;
3203 if (maximal_access_ctxt) {
3204 struct create_context *mxac_ccontext;
3206 if (maximal_access == 0)
3207 ksmbd_vfs_query_maximal_access(user_ns,
3210 mxac_ccontext = (struct create_context *)(rsp->Buffer +
3211 le32_to_cpu(rsp->CreateContextsLength));
3213 create_mxac_rsp_buf(rsp->Buffer +
3214 le32_to_cpu(rsp->CreateContextsLength),
3215 le32_to_cpu(maximal_access));
3216 le32_add_cpu(&rsp->CreateContextsLength,
3217 conn->vals->create_mxac_size);
3218 inc_rfc1001_len(work->response_buf,
3219 conn->vals->create_mxac_size);
3221 *next_ptr = cpu_to_le32(next_off);
3222 next_ptr = &mxac_ccontext->Next;
3223 next_off = conn->vals->create_mxac_size;
3226 if (query_disk_id) {
3227 struct create_context *disk_id_ccontext;
3229 disk_id_ccontext = (struct create_context *)(rsp->Buffer +
3230 le32_to_cpu(rsp->CreateContextsLength));
3232 create_disk_id_rsp_buf(rsp->Buffer +
3233 le32_to_cpu(rsp->CreateContextsLength),
3234 stat.ino, tcon->id);
3235 le32_add_cpu(&rsp->CreateContextsLength,
3236 conn->vals->create_disk_id_size);
3237 inc_rfc1001_len(work->response_buf,
3238 conn->vals->create_disk_id_size);
3240 *next_ptr = cpu_to_le32(next_off);
3241 next_ptr = &disk_id_ccontext->Next;
3242 next_off = conn->vals->create_disk_id_size;
3247 create_posix_rsp_buf(rsp->Buffer +
3248 le32_to_cpu(rsp->CreateContextsLength),
3250 le32_add_cpu(&rsp->CreateContextsLength,
3251 conn->vals->create_posix_size);
3252 inc_rfc1001_len(work->response_buf,
3253 conn->vals->create_posix_size);
3255 *next_ptr = cpu_to_le32(next_off);
3258 if (contxt_cnt > 0) {
3259 rsp->CreateContextsOffset =
3260 cpu_to_le32(offsetof(struct smb2_create_rsp, Buffer));
3264 if (file_present || created)
3266 ksmbd_revert_fsids(work);
3270 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
3271 else if (rc == -EOPNOTSUPP)
3272 rsp->hdr.Status = STATUS_NOT_SUPPORTED;
3273 else if (rc == -EACCES || rc == -ESTALE || rc == -EXDEV)
3274 rsp->hdr.Status = STATUS_ACCESS_DENIED;
3275 else if (rc == -ENOENT)
3276 rsp->hdr.Status = STATUS_OBJECT_NAME_INVALID;
3277 else if (rc == -EPERM)
3278 rsp->hdr.Status = STATUS_SHARING_VIOLATION;
3279 else if (rc == -EBUSY)
3280 rsp->hdr.Status = STATUS_DELETE_PENDING;
3281 else if (rc == -EBADF)
3282 rsp->hdr.Status = STATUS_OBJECT_NAME_NOT_FOUND;
3283 else if (rc == -ENOEXEC)
3284 rsp->hdr.Status = STATUS_DUPLICATE_OBJECTID;
3285 else if (rc == -ENXIO)
3286 rsp->hdr.Status = STATUS_NO_SUCH_DEVICE;
3287 else if (rc == -EEXIST)
3288 rsp->hdr.Status = STATUS_OBJECT_NAME_COLLISION;
3289 else if (rc == -EMFILE)
3290 rsp->hdr.Status = STATUS_INSUFFICIENT_RESOURCES;
3291 if (!rsp->hdr.Status)
3292 rsp->hdr.Status = STATUS_UNEXPECTED_IO_ERROR;
3295 ksmbd_fd_put(work, fp);
3296 smb2_set_err_rsp(work);
3297 ksmbd_debug(SMB, "Error response: %x\n", rsp->hdr.Status);
3306 static int readdir_info_level_struct_sz(int info_level)
3308 switch (info_level) {
3309 case FILE_FULL_DIRECTORY_INFORMATION:
3310 return sizeof(struct file_full_directory_info);
3311 case FILE_BOTH_DIRECTORY_INFORMATION:
3312 return sizeof(struct file_both_directory_info);
3313 case FILE_DIRECTORY_INFORMATION:
3314 return sizeof(struct file_directory_info);
3315 case FILE_NAMES_INFORMATION:
3316 return sizeof(struct file_names_info);
3317 case FILEID_FULL_DIRECTORY_INFORMATION:
3318 return sizeof(struct file_id_full_dir_info);
3319 case FILEID_BOTH_DIRECTORY_INFORMATION:
3320 return sizeof(struct file_id_both_directory_info);
3321 case SMB_FIND_FILE_POSIX_INFO:
3322 return sizeof(struct smb2_posix_info);
3328 static int dentry_name(struct ksmbd_dir_info *d_info, int info_level)
3330 switch (info_level) {
3331 case FILE_FULL_DIRECTORY_INFORMATION:
3333 struct file_full_directory_info *ffdinfo;
3335 ffdinfo = (struct file_full_directory_info *)d_info->rptr;
3336 d_info->rptr += le32_to_cpu(ffdinfo->NextEntryOffset);
3337 d_info->name = ffdinfo->FileName;
3338 d_info->name_len = le32_to_cpu(ffdinfo->FileNameLength);
3341 case FILE_BOTH_DIRECTORY_INFORMATION:
3343 struct file_both_directory_info *fbdinfo;
3345 fbdinfo = (struct file_both_directory_info *)d_info->rptr;
3346 d_info->rptr += le32_to_cpu(fbdinfo->NextEntryOffset);
3347 d_info->name = fbdinfo->FileName;
3348 d_info->name_len = le32_to_cpu(fbdinfo->FileNameLength);
3351 case FILE_DIRECTORY_INFORMATION:
3353 struct file_directory_info *fdinfo;
3355 fdinfo = (struct file_directory_info *)d_info->rptr;
3356 d_info->rptr += le32_to_cpu(fdinfo->NextEntryOffset);
3357 d_info->name = fdinfo->FileName;
3358 d_info->name_len = le32_to_cpu(fdinfo->FileNameLength);
3361 case FILE_NAMES_INFORMATION:
3363 struct file_names_info *fninfo;
3365 fninfo = (struct file_names_info *)d_info->rptr;
3366 d_info->rptr += le32_to_cpu(fninfo->NextEntryOffset);
3367 d_info->name = fninfo->FileName;
3368 d_info->name_len = le32_to_cpu(fninfo->FileNameLength);
3371 case FILEID_FULL_DIRECTORY_INFORMATION:
3373 struct file_id_full_dir_info *dinfo;
3375 dinfo = (struct file_id_full_dir_info *)d_info->rptr;
3376 d_info->rptr += le32_to_cpu(dinfo->NextEntryOffset);
3377 d_info->name = dinfo->FileName;
3378 d_info->name_len = le32_to_cpu(dinfo->FileNameLength);
3381 case FILEID_BOTH_DIRECTORY_INFORMATION:
3383 struct file_id_both_directory_info *fibdinfo;
3385 fibdinfo = (struct file_id_both_directory_info *)d_info->rptr;
3386 d_info->rptr += le32_to_cpu(fibdinfo->NextEntryOffset);
3387 d_info->name = fibdinfo->FileName;
3388 d_info->name_len = le32_to_cpu(fibdinfo->FileNameLength);
3391 case SMB_FIND_FILE_POSIX_INFO:
3393 struct smb2_posix_info *posix_info;
3395 posix_info = (struct smb2_posix_info *)d_info->rptr;
3396 d_info->rptr += le32_to_cpu(posix_info->NextEntryOffset);
3397 d_info->name = posix_info->name;
3398 d_info->name_len = le32_to_cpu(posix_info->name_len);
3407 * smb2_populate_readdir_entry() - encode directory entry in smb2 response
3409 * @conn: connection instance
3410 * @info_level: smb information level
3411 * @d_info: structure included variables for query dir
3412 * @ksmbd_kstat: ksmbd wrapper of dirent stat information
3414 * if directory has many entries, find first can't read it fully.
3415 * find next might be called multiple times to read remaining dir entries
3417 * Return: 0 on success, otherwise error
3419 static int smb2_populate_readdir_entry(struct ksmbd_conn *conn, int info_level,
3420 struct ksmbd_dir_info *d_info,
3421 struct ksmbd_kstat *ksmbd_kstat)
3423 int next_entry_offset = 0;
3427 int struct_sz, rc = 0;
3429 conv_name = ksmbd_convert_dir_info_name(d_info,
3435 /* Somehow the name has only terminating NULL bytes */
3438 goto free_conv_name;
3441 struct_sz = readdir_info_level_struct_sz(info_level) - 1 + conv_len;
3442 next_entry_offset = ALIGN(struct_sz, KSMBD_DIR_INFO_ALIGNMENT);
3443 d_info->last_entry_off_align = next_entry_offset - struct_sz;
3445 if (next_entry_offset > d_info->out_buf_len) {
3446 d_info->out_buf_len = 0;
3448 goto free_conv_name;
3451 kstat = d_info->wptr;
3452 if (info_level != FILE_NAMES_INFORMATION)
3453 kstat = ksmbd_vfs_init_kstat(&d_info->wptr, ksmbd_kstat);
3455 switch (info_level) {
3456 case FILE_FULL_DIRECTORY_INFORMATION:
3458 struct file_full_directory_info *ffdinfo;
3460 ffdinfo = (struct file_full_directory_info *)kstat;
3461 ffdinfo->FileNameLength = cpu_to_le32(conv_len);
3463 smb2_get_reparse_tag_special_file(ksmbd_kstat->kstat->mode);
3464 if (ffdinfo->EaSize)
3465 ffdinfo->ExtFileAttributes = FILE_ATTRIBUTE_REPARSE_POINT_LE;
3466 if (d_info->hide_dot_file && d_info->name[0] == '.')
3467 ffdinfo->ExtFileAttributes |= FILE_ATTRIBUTE_HIDDEN_LE;
3468 memcpy(ffdinfo->FileName, conv_name, conv_len);
3469 ffdinfo->NextEntryOffset = cpu_to_le32(next_entry_offset);
3472 case FILE_BOTH_DIRECTORY_INFORMATION:
3474 struct file_both_directory_info *fbdinfo;
3476 fbdinfo = (struct file_both_directory_info *)kstat;
3477 fbdinfo->FileNameLength = cpu_to_le32(conv_len);
3479 smb2_get_reparse_tag_special_file(ksmbd_kstat->kstat->mode);
3480 if (fbdinfo->EaSize)
3481 fbdinfo->ExtFileAttributes = FILE_ATTRIBUTE_REPARSE_POINT_LE;
3482 fbdinfo->ShortNameLength = 0;
3483 fbdinfo->Reserved = 0;
3484 if (d_info->hide_dot_file && d_info->name[0] == '.')
3485 fbdinfo->ExtFileAttributes |= FILE_ATTRIBUTE_HIDDEN_LE;
3486 memcpy(fbdinfo->FileName, conv_name, conv_len);
3487 fbdinfo->NextEntryOffset = cpu_to_le32(next_entry_offset);
3490 case FILE_DIRECTORY_INFORMATION:
3492 struct file_directory_info *fdinfo;
3494 fdinfo = (struct file_directory_info *)kstat;
3495 fdinfo->FileNameLength = cpu_to_le32(conv_len);
3496 if (d_info->hide_dot_file && d_info->name[0] == '.')
3497 fdinfo->ExtFileAttributes |= FILE_ATTRIBUTE_HIDDEN_LE;
3498 memcpy(fdinfo->FileName, conv_name, conv_len);
3499 fdinfo->NextEntryOffset = cpu_to_le32(next_entry_offset);
3502 case FILE_NAMES_INFORMATION:
3504 struct file_names_info *fninfo;
3506 fninfo = (struct file_names_info *)kstat;
3507 fninfo->FileNameLength = cpu_to_le32(conv_len);
3508 memcpy(fninfo->FileName, conv_name, conv_len);
3509 fninfo->NextEntryOffset = cpu_to_le32(next_entry_offset);
3512 case FILEID_FULL_DIRECTORY_INFORMATION:
3514 struct file_id_full_dir_info *dinfo;
3516 dinfo = (struct file_id_full_dir_info *)kstat;
3517 dinfo->FileNameLength = cpu_to_le32(conv_len);
3519 smb2_get_reparse_tag_special_file(ksmbd_kstat->kstat->mode);
3521 dinfo->ExtFileAttributes = FILE_ATTRIBUTE_REPARSE_POINT_LE;
3522 dinfo->Reserved = 0;
3523 dinfo->UniqueId = cpu_to_le64(ksmbd_kstat->kstat->ino);
3524 if (d_info->hide_dot_file && d_info->name[0] == '.')
3525 dinfo->ExtFileAttributes |= FILE_ATTRIBUTE_HIDDEN_LE;
3526 memcpy(dinfo->FileName, conv_name, conv_len);
3527 dinfo->NextEntryOffset = cpu_to_le32(next_entry_offset);
3530 case FILEID_BOTH_DIRECTORY_INFORMATION:
3532 struct file_id_both_directory_info *fibdinfo;
3534 fibdinfo = (struct file_id_both_directory_info *)kstat;
3535 fibdinfo->FileNameLength = cpu_to_le32(conv_len);
3537 smb2_get_reparse_tag_special_file(ksmbd_kstat->kstat->mode);
3538 if (fibdinfo->EaSize)
3539 fibdinfo->ExtFileAttributes = FILE_ATTRIBUTE_REPARSE_POINT_LE;
3540 fibdinfo->UniqueId = cpu_to_le64(ksmbd_kstat->kstat->ino);
3541 fibdinfo->ShortNameLength = 0;
3542 fibdinfo->Reserved = 0;
3543 fibdinfo->Reserved2 = cpu_to_le16(0);
3544 if (d_info->hide_dot_file && d_info->name[0] == '.')
3545 fibdinfo->ExtFileAttributes |= FILE_ATTRIBUTE_HIDDEN_LE;
3546 memcpy(fibdinfo->FileName, conv_name, conv_len);
3547 fibdinfo->NextEntryOffset = cpu_to_le32(next_entry_offset);
3550 case SMB_FIND_FILE_POSIX_INFO:
3552 struct smb2_posix_info *posix_info;
3555 posix_info = (struct smb2_posix_info *)kstat;
3556 posix_info->Ignored = 0;
3557 posix_info->CreationTime = cpu_to_le64(ksmbd_kstat->create_time);
3558 time = ksmbd_UnixTimeToNT(ksmbd_kstat->kstat->ctime);
3559 posix_info->ChangeTime = cpu_to_le64(time);
3560 time = ksmbd_UnixTimeToNT(ksmbd_kstat->kstat->atime);
3561 posix_info->LastAccessTime = cpu_to_le64(time);
3562 time = ksmbd_UnixTimeToNT(ksmbd_kstat->kstat->mtime);
3563 posix_info->LastWriteTime = cpu_to_le64(time);
3564 posix_info->EndOfFile = cpu_to_le64(ksmbd_kstat->kstat->size);
3565 posix_info->AllocationSize = cpu_to_le64(ksmbd_kstat->kstat->blocks << 9);
3566 posix_info->DeviceId = cpu_to_le32(ksmbd_kstat->kstat->rdev);
3567 posix_info->HardLinks = cpu_to_le32(ksmbd_kstat->kstat->nlink);
3568 posix_info->Mode = cpu_to_le32(ksmbd_kstat->kstat->mode);
3569 posix_info->Inode = cpu_to_le64(ksmbd_kstat->kstat->ino);
3570 posix_info->DosAttributes =
3571 S_ISDIR(ksmbd_kstat->kstat->mode) ?
3572 FILE_ATTRIBUTE_DIRECTORY_LE : FILE_ATTRIBUTE_ARCHIVE_LE;
3573 if (d_info->hide_dot_file && d_info->name[0] == '.')
3574 posix_info->DosAttributes |= FILE_ATTRIBUTE_HIDDEN_LE;
3576 * SidBuffer(32) contain two sids(Domain sid(16), UNIX group sid(16)).
3577 * UNIX sid(16) = revision(1) + num_subauth(1) + authority(6) +
3578 * sub_auth(4 * 1(num_subauth)) + RID(4).
3580 id_to_sid(from_kuid_munged(&init_user_ns, ksmbd_kstat->kstat->uid),
3581 SIDUNIX_USER, (struct smb_sid *)&posix_info->SidBuffer[0]);
3582 id_to_sid(from_kgid_munged(&init_user_ns, ksmbd_kstat->kstat->gid),
3583 SIDUNIX_GROUP, (struct smb_sid *)&posix_info->SidBuffer[16]);
3584 memcpy(posix_info->name, conv_name, conv_len);
3585 posix_info->name_len = cpu_to_le32(conv_len);
3586 posix_info->NextEntryOffset = cpu_to_le32(next_entry_offset);
3590 } /* switch (info_level) */
3592 d_info->last_entry_offset = d_info->data_count;
3593 d_info->data_count += next_entry_offset;
3594 d_info->out_buf_len -= next_entry_offset;
3595 d_info->wptr += next_entry_offset;
3598 "info_level : %d, buf_len :%d, next_offset : %d, data_count : %d\n",
3599 info_level, d_info->out_buf_len,
3600 next_entry_offset, d_info->data_count);
3607 struct smb2_query_dir_private {
3608 struct ksmbd_work *work;
3609 char *search_pattern;
3610 struct ksmbd_file *dir_fp;
3612 struct ksmbd_dir_info *d_info;
3616 static void lock_dir(struct ksmbd_file *dir_fp)
3618 struct dentry *dir = dir_fp->filp->f_path.dentry;
3620 inode_lock_nested(d_inode(dir), I_MUTEX_PARENT);
3623 static void unlock_dir(struct ksmbd_file *dir_fp)
3625 struct dentry *dir = dir_fp->filp->f_path.dentry;
3627 inode_unlock(d_inode(dir));
3630 static int process_query_dir_entries(struct smb2_query_dir_private *priv)
3632 struct user_namespace *user_ns = file_mnt_user_ns(priv->dir_fp->filp);
3634 struct ksmbd_kstat ksmbd_kstat;
3638 for (i = 0; i < priv->d_info->num_entry; i++) {
3639 struct dentry *dent;
3641 if (dentry_name(priv->d_info, priv->info_level))
3644 lock_dir(priv->dir_fp);
3645 dent = lookup_one(user_ns, priv->d_info->name,
3646 priv->dir_fp->filp->f_path.dentry,
3647 priv->d_info->name_len);
3648 unlock_dir(priv->dir_fp);
3651 ksmbd_debug(SMB, "Cannot lookup `%s' [%ld]\n",
3656 if (unlikely(d_is_negative(dent))) {
3658 ksmbd_debug(SMB, "Negative dentry `%s'\n",
3659 priv->d_info->name);
3663 ksmbd_kstat.kstat = &kstat;
3664 if (priv->info_level != FILE_NAMES_INFORMATION)
3665 ksmbd_vfs_fill_dentry_attrs(priv->work,
3670 rc = smb2_populate_readdir_entry(priv->work->conn,
3681 static int reserve_populate_dentry(struct ksmbd_dir_info *d_info,
3686 int next_entry_offset;
3688 struct_sz = readdir_info_level_struct_sz(info_level);
3689 if (struct_sz == -EOPNOTSUPP)
3692 conv_len = (d_info->name_len + 1) * 2;
3693 next_entry_offset = ALIGN(struct_sz - 1 + conv_len,
3694 KSMBD_DIR_INFO_ALIGNMENT);
3696 if (next_entry_offset > d_info->out_buf_len) {
3697 d_info->out_buf_len = 0;
3701 switch (info_level) {
3702 case FILE_FULL_DIRECTORY_INFORMATION:
3704 struct file_full_directory_info *ffdinfo;
3706 ffdinfo = (struct file_full_directory_info *)d_info->wptr;
3707 memcpy(ffdinfo->FileName, d_info->name, d_info->name_len);
3708 ffdinfo->FileName[d_info->name_len] = 0x00;
3709 ffdinfo->FileNameLength = cpu_to_le32(d_info->name_len);
3710 ffdinfo->NextEntryOffset = cpu_to_le32(next_entry_offset);
3713 case FILE_BOTH_DIRECTORY_INFORMATION:
3715 struct file_both_directory_info *fbdinfo;
3717 fbdinfo = (struct file_both_directory_info *)d_info->wptr;
3718 memcpy(fbdinfo->FileName, d_info->name, d_info->name_len);
3719 fbdinfo->FileName[d_info->name_len] = 0x00;
3720 fbdinfo->FileNameLength = cpu_to_le32(d_info->name_len);
3721 fbdinfo->NextEntryOffset = cpu_to_le32(next_entry_offset);
3724 case FILE_DIRECTORY_INFORMATION:
3726 struct file_directory_info *fdinfo;
3728 fdinfo = (struct file_directory_info *)d_info->wptr;
3729 memcpy(fdinfo->FileName, d_info->name, d_info->name_len);
3730 fdinfo->FileName[d_info->name_len] = 0x00;
3731 fdinfo->FileNameLength = cpu_to_le32(d_info->name_len);
3732 fdinfo->NextEntryOffset = cpu_to_le32(next_entry_offset);
3735 case FILE_NAMES_INFORMATION:
3737 struct file_names_info *fninfo;
3739 fninfo = (struct file_names_info *)d_info->wptr;
3740 memcpy(fninfo->FileName, d_info->name, d_info->name_len);
3741 fninfo->FileName[d_info->name_len] = 0x00;
3742 fninfo->FileNameLength = cpu_to_le32(d_info->name_len);
3743 fninfo->NextEntryOffset = cpu_to_le32(next_entry_offset);
3746 case FILEID_FULL_DIRECTORY_INFORMATION:
3748 struct file_id_full_dir_info *dinfo;
3750 dinfo = (struct file_id_full_dir_info *)d_info->wptr;
3751 memcpy(dinfo->FileName, d_info->name, d_info->name_len);
3752 dinfo->FileName[d_info->name_len] = 0x00;
3753 dinfo->FileNameLength = cpu_to_le32(d_info->name_len);
3754 dinfo->NextEntryOffset = cpu_to_le32(next_entry_offset);
3757 case FILEID_BOTH_DIRECTORY_INFORMATION:
3759 struct file_id_both_directory_info *fibdinfo;
3761 fibdinfo = (struct file_id_both_directory_info *)d_info->wptr;
3762 memcpy(fibdinfo->FileName, d_info->name, d_info->name_len);
3763 fibdinfo->FileName[d_info->name_len] = 0x00;
3764 fibdinfo->FileNameLength = cpu_to_le32(d_info->name_len);
3765 fibdinfo->NextEntryOffset = cpu_to_le32(next_entry_offset);
3768 case SMB_FIND_FILE_POSIX_INFO:
3770 struct smb2_posix_info *posix_info;
3772 posix_info = (struct smb2_posix_info *)d_info->wptr;
3773 memcpy(posix_info->name, d_info->name, d_info->name_len);
3774 posix_info->name[d_info->name_len] = 0x00;
3775 posix_info->name_len = cpu_to_le32(d_info->name_len);
3776 posix_info->NextEntryOffset =
3777 cpu_to_le32(next_entry_offset);
3780 } /* switch (info_level) */
3782 d_info->num_entry++;
3783 d_info->out_buf_len -= next_entry_offset;
3784 d_info->wptr += next_entry_offset;
3788 static int __query_dir(struct dir_context *ctx, const char *name, int namlen,
3789 loff_t offset, u64 ino, unsigned int d_type)
3791 struct ksmbd_readdir_data *buf;
3792 struct smb2_query_dir_private *priv;
3793 struct ksmbd_dir_info *d_info;
3796 buf = container_of(ctx, struct ksmbd_readdir_data, ctx);
3797 priv = buf->private;
3798 d_info = priv->d_info;
3800 /* dot and dotdot entries are already reserved */
3801 if (!strcmp(".", name) || !strcmp("..", name))
3803 if (ksmbd_share_veto_filename(priv->work->tcon->share_conf, name))
3805 if (!match_pattern(name, namlen, priv->search_pattern))
3808 d_info->name = name;
3809 d_info->name_len = namlen;
3810 rc = reserve_populate_dentry(d_info, priv->info_level);
3813 if (d_info->flags & SMB2_RETURN_SINGLE_ENTRY) {
3814 d_info->out_buf_len = 0;
3820 static int verify_info_level(int info_level)
3822 switch (info_level) {
3823 case FILE_FULL_DIRECTORY_INFORMATION:
3824 case FILE_BOTH_DIRECTORY_INFORMATION:
3825 case FILE_DIRECTORY_INFORMATION:
3826 case FILE_NAMES_INFORMATION:
3827 case FILEID_FULL_DIRECTORY_INFORMATION:
3828 case FILEID_BOTH_DIRECTORY_INFORMATION:
3829 case SMB_FIND_FILE_POSIX_INFO:
3838 static int smb2_resp_buf_len(struct ksmbd_work *work, unsigned short hdr2_len)
3842 free_len = (int)(work->response_sz -
3843 (get_rfc1002_len(work->response_buf) + 4)) - hdr2_len;
3847 static int smb2_calc_max_out_buf_len(struct ksmbd_work *work,
3848 unsigned short hdr2_len,
3849 unsigned int out_buf_len)
3853 if (out_buf_len > work->conn->vals->max_trans_size)
3856 free_len = smb2_resp_buf_len(work, hdr2_len);
3860 return min_t(int, out_buf_len, free_len);
3863 int smb2_query_dir(struct ksmbd_work *work)
3865 struct ksmbd_conn *conn = work->conn;
3866 struct smb2_query_directory_req *req;
3867 struct smb2_query_directory_rsp *rsp;
3868 struct ksmbd_share_config *share = work->tcon->share_conf;
3869 struct ksmbd_file *dir_fp = NULL;
3870 struct ksmbd_dir_info d_info;
3872 char *srch_ptr = NULL;
3873 unsigned char srch_flag;
3875 struct smb2_query_dir_private query_dir_private = {NULL, };
3877 WORK_BUFFERS(work, req, rsp);
3879 if (ksmbd_override_fsids(work)) {
3880 rsp->hdr.Status = STATUS_NO_MEMORY;
3881 smb2_set_err_rsp(work);
3885 rc = verify_info_level(req->FileInformationClass);
3891 dir_fp = ksmbd_lookup_fd_slow(work, req->VolatileFileId, req->PersistentFileId);
3897 if (!(dir_fp->daccess & FILE_LIST_DIRECTORY_LE) ||
3898 inode_permission(file_mnt_user_ns(dir_fp->filp),
3899 file_inode(dir_fp->filp),
3900 MAY_READ | MAY_EXEC)) {
3901 pr_err("no right to enumerate directory (%pD)\n", dir_fp->filp);
3906 if (!S_ISDIR(file_inode(dir_fp->filp)->i_mode)) {
3907 pr_err("can't do query dir for a file\n");
3912 srch_flag = req->Flags;
3913 srch_ptr = smb_strndup_from_utf16(req->Buffer,
3914 le16_to_cpu(req->FileNameLength), 1,
3916 if (IS_ERR(srch_ptr)) {
3917 ksmbd_debug(SMB, "Search Pattern not found\n");
3921 ksmbd_debug(SMB, "Search pattern is %s\n", srch_ptr);
3924 if (srch_flag & SMB2_REOPEN || srch_flag & SMB2_RESTART_SCANS) {
3925 ksmbd_debug(SMB, "Restart directory scan\n");
3926 generic_file_llseek(dir_fp->filp, 0, SEEK_SET);
3929 memset(&d_info, 0, sizeof(struct ksmbd_dir_info));
3930 d_info.wptr = (char *)rsp->Buffer;
3931 d_info.rptr = (char *)rsp->Buffer;
3932 d_info.out_buf_len =
3933 smb2_calc_max_out_buf_len(work, 8,
3934 le32_to_cpu(req->OutputBufferLength));
3935 if (d_info.out_buf_len < 0) {
3939 d_info.flags = srch_flag;
3942 * reserve dot and dotdot entries in head of buffer
3945 rc = ksmbd_populate_dot_dotdot_entries(work, req->FileInformationClass,
3946 dir_fp, &d_info, srch_ptr,
3947 smb2_populate_readdir_entry);
3953 if (test_share_config_flag(share, KSMBD_SHARE_FLAG_HIDE_DOT_FILES))
3954 d_info.hide_dot_file = true;
3956 buffer_sz = d_info.out_buf_len;
3957 d_info.rptr = d_info.wptr;
3958 query_dir_private.work = work;
3959 query_dir_private.search_pattern = srch_ptr;
3960 query_dir_private.dir_fp = dir_fp;
3961 query_dir_private.d_info = &d_info;
3962 query_dir_private.info_level = req->FileInformationClass;
3963 dir_fp->readdir_data.private = &query_dir_private;
3964 set_ctx_actor(&dir_fp->readdir_data.ctx, __query_dir);
3966 rc = iterate_dir(dir_fp->filp, &dir_fp->readdir_data.ctx);
3968 * req->OutputBufferLength is too small to contain even one entry.
3969 * In this case, it immediately returns OutputBufferLength 0 to client.
3971 if (!d_info.out_buf_len && !d_info.num_entry)
3973 if (rc > 0 || rc == -ENOSPC)
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 else if (rc == -EIO)
4033 rsp->hdr.Status = STATUS_FILE_CORRUPT_ERROR;
4034 if (!rsp->hdr.Status)
4035 rsp->hdr.Status = STATUS_UNEXPECTED_IO_ERROR;
4037 smb2_set_err_rsp(work);
4038 ksmbd_fd_put(work, dir_fp);
4039 ksmbd_revert_fsids(work);
4044 * buffer_check_err() - helper function to check buffer errors
4045 * @reqOutputBufferLength: max buffer length expected in command response
4046 * @rsp: query info response buffer contains output buffer length
4047 * @rsp_org: base response buffer pointer in case of chained response
4048 * @infoclass_size: query info class response buffer size
4050 * Return: 0 on success, otherwise error
4052 static int buffer_check_err(int reqOutputBufferLength,
4053 struct smb2_query_info_rsp *rsp,
4054 void *rsp_org, int infoclass_size)
4056 if (reqOutputBufferLength < le32_to_cpu(rsp->OutputBufferLength)) {
4057 if (reqOutputBufferLength < infoclass_size) {
4058 pr_err("Invalid Buffer Size Requested\n");
4059 rsp->hdr.Status = STATUS_INFO_LENGTH_MISMATCH;
4060 *(__be32 *)rsp_org = cpu_to_be32(sizeof(struct smb2_hdr));
4064 ksmbd_debug(SMB, "Buffer Overflow\n");
4065 rsp->hdr.Status = STATUS_BUFFER_OVERFLOW;
4066 *(__be32 *)rsp_org = cpu_to_be32(sizeof(struct smb2_hdr) +
4067 reqOutputBufferLength);
4068 rsp->OutputBufferLength = cpu_to_le32(reqOutputBufferLength);
4073 static void get_standard_info_pipe(struct smb2_query_info_rsp *rsp,
4076 struct smb2_file_standard_info *sinfo;
4078 sinfo = (struct smb2_file_standard_info *)rsp->Buffer;
4080 sinfo->AllocationSize = cpu_to_le64(4096);
4081 sinfo->EndOfFile = cpu_to_le64(0);
4082 sinfo->NumberOfLinks = cpu_to_le32(1);
4083 sinfo->DeletePending = 1;
4084 sinfo->Directory = 0;
4085 rsp->OutputBufferLength =
4086 cpu_to_le32(sizeof(struct smb2_file_standard_info));
4087 inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_standard_info));
4090 static void get_internal_info_pipe(struct smb2_query_info_rsp *rsp, u64 num,
4093 struct smb2_file_internal_info *file_info;
4095 file_info = (struct smb2_file_internal_info *)rsp->Buffer;
4097 /* any unique number */
4098 file_info->IndexNumber = cpu_to_le64(num | (1ULL << 63));
4099 rsp->OutputBufferLength =
4100 cpu_to_le32(sizeof(struct smb2_file_internal_info));
4101 inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_internal_info));
4104 static int smb2_get_info_file_pipe(struct ksmbd_session *sess,
4105 struct smb2_query_info_req *req,
4106 struct smb2_query_info_rsp *rsp,
4113 * Windows can sometime send query file info request on
4114 * pipe without opening it, checking error condition here
4116 id = req->VolatileFileId;
4117 if (!ksmbd_session_rpc_method(sess, id))
4120 ksmbd_debug(SMB, "FileInfoClass %u, FileId 0x%llx\n",
4121 req->FileInfoClass, req->VolatileFileId);
4123 switch (req->FileInfoClass) {
4124 case FILE_STANDARD_INFORMATION:
4125 get_standard_info_pipe(rsp, rsp_org);
4126 rc = buffer_check_err(le32_to_cpu(req->OutputBufferLength),
4128 FILE_STANDARD_INFORMATION_SIZE);
4130 case FILE_INTERNAL_INFORMATION:
4131 get_internal_info_pipe(rsp, id, rsp_org);
4132 rc = buffer_check_err(le32_to_cpu(req->OutputBufferLength),
4134 FILE_INTERNAL_INFORMATION_SIZE);
4137 ksmbd_debug(SMB, "smb2_info_file_pipe for %u not supported\n",
4138 req->FileInfoClass);
4145 * smb2_get_ea() - handler for smb2 get extended attribute command
4146 * @work: smb work containing query info command buffer
4147 * @fp: ksmbd_file pointer
4148 * @req: get extended attribute request
4149 * @rsp: response buffer pointer
4150 * @rsp_org: base response buffer pointer in case of chained response
4152 * Return: 0 on success, otherwise error
4154 static int smb2_get_ea(struct ksmbd_work *work, struct ksmbd_file *fp,
4155 struct smb2_query_info_req *req,
4156 struct smb2_query_info_rsp *rsp, void *rsp_org)
4158 struct smb2_ea_info *eainfo, *prev_eainfo;
4159 char *name, *ptr, *xattr_list = NULL, *buf;
4160 int rc, name_len, value_len, xattr_list_len, idx;
4161 ssize_t buf_free_len, alignment_bytes, next_offset, rsp_data_cnt = 0;
4162 struct smb2_ea_info_req *ea_req = NULL;
4163 const struct path *path;
4164 struct user_namespace *user_ns = file_mnt_user_ns(fp->filp);
4166 if (!(fp->daccess & FILE_READ_EA_LE)) {
4167 pr_err("Not permitted to read ext attr : 0x%x\n",
4172 path = &fp->filp->f_path;
4173 /* single EA entry is requested with given user.* name */
4174 if (req->InputBufferLength) {
4175 if (le32_to_cpu(req->InputBufferLength) <
4176 sizeof(struct smb2_ea_info_req))
4179 ea_req = (struct smb2_ea_info_req *)req->Buffer;
4181 /* need to send all EAs, if no specific EA is requested*/
4182 if (le32_to_cpu(req->Flags) & SL_RETURN_SINGLE_ENTRY)
4184 "All EAs are requested but need to send single EA entry in rsp flags 0x%x\n",
4185 le32_to_cpu(req->Flags));
4189 smb2_calc_max_out_buf_len(work, 8,
4190 le32_to_cpu(req->OutputBufferLength));
4191 if (buf_free_len < 0)
4194 rc = ksmbd_vfs_listxattr(path->dentry, &xattr_list);
4196 rsp->hdr.Status = STATUS_INVALID_HANDLE;
4198 } else if (!rc) { /* there is no EA in the file */
4199 ksmbd_debug(SMB, "no ea data in the file\n");
4202 xattr_list_len = rc;
4204 ptr = (char *)rsp->Buffer;
4205 eainfo = (struct smb2_ea_info *)ptr;
4206 prev_eainfo = eainfo;
4209 while (idx < xattr_list_len) {
4210 name = xattr_list + idx;
4211 name_len = strlen(name);
4213 ksmbd_debug(SMB, "%s, len %d\n", name, name_len);
4214 idx += name_len + 1;
4217 * CIFS does not support EA other than user.* namespace,
4218 * still keep the framework generic, to list other attrs
4221 if (strncmp(name, XATTR_USER_PREFIX, XATTR_USER_PREFIX_LEN))
4224 if (!strncmp(&name[XATTR_USER_PREFIX_LEN], STREAM_PREFIX,
4228 if (req->InputBufferLength &&
4229 strncmp(&name[XATTR_USER_PREFIX_LEN], ea_req->name,
4230 ea_req->EaNameLength))
4233 if (!strncmp(&name[XATTR_USER_PREFIX_LEN],
4234 DOS_ATTRIBUTE_PREFIX, DOS_ATTRIBUTE_PREFIX_LEN))
4237 if (!strncmp(name, XATTR_USER_PREFIX, XATTR_USER_PREFIX_LEN))
4238 name_len -= XATTR_USER_PREFIX_LEN;
4240 ptr = (char *)(&eainfo->name + name_len + 1);
4241 buf_free_len -= (offsetof(struct smb2_ea_info, name) +
4243 /* bailout if xattr can't fit in buf_free_len */
4244 value_len = ksmbd_vfs_getxattr(user_ns, path->dentry,
4246 if (value_len <= 0) {
4248 rsp->hdr.Status = STATUS_INVALID_HANDLE;
4252 buf_free_len -= value_len;
4253 if (buf_free_len < 0) {
4258 memcpy(ptr, buf, value_len);
4263 eainfo->EaNameLength = name_len;
4265 if (!strncmp(name, XATTR_USER_PREFIX, XATTR_USER_PREFIX_LEN))
4266 memcpy(eainfo->name, &name[XATTR_USER_PREFIX_LEN],
4269 memcpy(eainfo->name, name, name_len);
4271 eainfo->name[name_len] = '\0';
4272 eainfo->EaValueLength = cpu_to_le16(value_len);
4273 next_offset = offsetof(struct smb2_ea_info, name) +
4274 name_len + 1 + value_len;
4276 /* align next xattr entry at 4 byte bundary */
4277 alignment_bytes = ((next_offset + 3) & ~3) - next_offset;
4278 if (alignment_bytes) {
4279 memset(ptr, '\0', alignment_bytes);
4280 ptr += alignment_bytes;
4281 next_offset += alignment_bytes;
4282 buf_free_len -= alignment_bytes;
4284 eainfo->NextEntryOffset = cpu_to_le32(next_offset);
4285 prev_eainfo = eainfo;
4286 eainfo = (struct smb2_ea_info *)ptr;
4287 rsp_data_cnt += next_offset;
4289 if (req->InputBufferLength) {
4290 ksmbd_debug(SMB, "single entry requested\n");
4295 /* no more ea entries */
4296 prev_eainfo->NextEntryOffset = 0;
4299 if (rsp_data_cnt == 0)
4300 rsp->hdr.Status = STATUS_NO_EAS_ON_FILE;
4301 rsp->OutputBufferLength = cpu_to_le32(rsp_data_cnt);
4302 inc_rfc1001_len(rsp_org, rsp_data_cnt);
4308 static void get_file_access_info(struct smb2_query_info_rsp *rsp,
4309 struct ksmbd_file *fp, void *rsp_org)
4311 struct smb2_file_access_info *file_info;
4313 file_info = (struct smb2_file_access_info *)rsp->Buffer;
4314 file_info->AccessFlags = fp->daccess;
4315 rsp->OutputBufferLength =
4316 cpu_to_le32(sizeof(struct smb2_file_access_info));
4317 inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_access_info));
4320 static int get_file_basic_info(struct smb2_query_info_rsp *rsp,
4321 struct ksmbd_file *fp, void *rsp_org)
4323 struct smb2_file_basic_info *basic_info;
4327 if (!(fp->daccess & FILE_READ_ATTRIBUTES_LE)) {
4328 pr_err("no right to read the attributes : 0x%x\n",
4333 basic_info = (struct smb2_file_basic_info *)rsp->Buffer;
4334 generic_fillattr(file_mnt_user_ns(fp->filp), file_inode(fp->filp),
4336 basic_info->CreationTime = cpu_to_le64(fp->create_time);
4337 time = ksmbd_UnixTimeToNT(stat.atime);
4338 basic_info->LastAccessTime = cpu_to_le64(time);
4339 time = ksmbd_UnixTimeToNT(stat.mtime);
4340 basic_info->LastWriteTime = cpu_to_le64(time);
4341 time = ksmbd_UnixTimeToNT(stat.ctime);
4342 basic_info->ChangeTime = cpu_to_le64(time);
4343 basic_info->Attributes = fp->f_ci->m_fattr;
4344 basic_info->Pad1 = 0;
4345 rsp->OutputBufferLength =
4346 cpu_to_le32(sizeof(struct smb2_file_basic_info));
4347 inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_basic_info));
4351 static unsigned long long get_allocation_size(struct inode *inode,
4354 unsigned long long alloc_size = 0;
4356 if (!S_ISDIR(stat->mode)) {
4357 if ((inode->i_blocks << 9) <= stat->size)
4358 alloc_size = stat->size;
4360 alloc_size = inode->i_blocks << 9;
4366 static void get_file_standard_info(struct smb2_query_info_rsp *rsp,
4367 struct ksmbd_file *fp, void *rsp_org)
4369 struct smb2_file_standard_info *sinfo;
4370 unsigned int delete_pending;
4371 struct inode *inode;
4374 inode = file_inode(fp->filp);
4375 generic_fillattr(file_mnt_user_ns(fp->filp), inode, &stat);
4377 sinfo = (struct smb2_file_standard_info *)rsp->Buffer;
4378 delete_pending = ksmbd_inode_pending_delete(fp);
4380 sinfo->AllocationSize = cpu_to_le64(get_allocation_size(inode, &stat));
4381 sinfo->EndOfFile = S_ISDIR(stat.mode) ? 0 : cpu_to_le64(stat.size);
4382 sinfo->NumberOfLinks = cpu_to_le32(get_nlink(&stat) - delete_pending);
4383 sinfo->DeletePending = delete_pending;
4384 sinfo->Directory = S_ISDIR(stat.mode) ? 1 : 0;
4385 rsp->OutputBufferLength =
4386 cpu_to_le32(sizeof(struct smb2_file_standard_info));
4387 inc_rfc1001_len(rsp_org,
4388 sizeof(struct smb2_file_standard_info));
4391 static void get_file_alignment_info(struct smb2_query_info_rsp *rsp,
4394 struct smb2_file_alignment_info *file_info;
4396 file_info = (struct smb2_file_alignment_info *)rsp->Buffer;
4397 file_info->AlignmentRequirement = 0;
4398 rsp->OutputBufferLength =
4399 cpu_to_le32(sizeof(struct smb2_file_alignment_info));
4400 inc_rfc1001_len(rsp_org,
4401 sizeof(struct smb2_file_alignment_info));
4404 static int get_file_all_info(struct ksmbd_work *work,
4405 struct smb2_query_info_rsp *rsp,
4406 struct ksmbd_file *fp,
4409 struct ksmbd_conn *conn = work->conn;
4410 struct smb2_file_all_info *file_info;
4411 unsigned int delete_pending;
4412 struct inode *inode;
4418 if (!(fp->daccess & FILE_READ_ATTRIBUTES_LE)) {
4419 ksmbd_debug(SMB, "no right to read the attributes : 0x%x\n",
4424 filename = convert_to_nt_pathname(work->tcon->share_conf, &fp->filp->f_path);
4425 if (IS_ERR(filename))
4426 return PTR_ERR(filename);
4428 inode = file_inode(fp->filp);
4429 generic_fillattr(file_mnt_user_ns(fp->filp), inode, &stat);
4431 ksmbd_debug(SMB, "filename = %s\n", filename);
4432 delete_pending = ksmbd_inode_pending_delete(fp);
4433 file_info = (struct smb2_file_all_info *)rsp->Buffer;
4435 file_info->CreationTime = cpu_to_le64(fp->create_time);
4436 time = ksmbd_UnixTimeToNT(stat.atime);
4437 file_info->LastAccessTime = cpu_to_le64(time);
4438 time = ksmbd_UnixTimeToNT(stat.mtime);
4439 file_info->LastWriteTime = cpu_to_le64(time);
4440 time = ksmbd_UnixTimeToNT(stat.ctime);
4441 file_info->ChangeTime = cpu_to_le64(time);
4442 file_info->Attributes = fp->f_ci->m_fattr;
4443 file_info->Pad1 = 0;
4444 file_info->AllocationSize =
4445 cpu_to_le64(get_allocation_size(inode, &stat));
4446 file_info->EndOfFile = S_ISDIR(stat.mode) ? 0 : cpu_to_le64(stat.size);
4447 file_info->NumberOfLinks =
4448 cpu_to_le32(get_nlink(&stat) - delete_pending);
4449 file_info->DeletePending = delete_pending;
4450 file_info->Directory = S_ISDIR(stat.mode) ? 1 : 0;
4451 file_info->Pad2 = 0;
4452 file_info->IndexNumber = cpu_to_le64(stat.ino);
4453 file_info->EASize = 0;
4454 file_info->AccessFlags = fp->daccess;
4455 file_info->CurrentByteOffset = cpu_to_le64(fp->filp->f_pos);
4456 file_info->Mode = fp->coption;
4457 file_info->AlignmentRequirement = 0;
4458 conv_len = smbConvertToUTF16((__le16 *)file_info->FileName, filename,
4459 PATH_MAX, conn->local_nls, 0);
4461 file_info->FileNameLength = cpu_to_le32(conv_len);
4462 rsp->OutputBufferLength =
4463 cpu_to_le32(sizeof(struct smb2_file_all_info) + conv_len - 1);
4465 inc_rfc1001_len(rsp_org, le32_to_cpu(rsp->OutputBufferLength));
4469 static void get_file_alternate_info(struct ksmbd_work *work,
4470 struct smb2_query_info_rsp *rsp,
4471 struct ksmbd_file *fp,
4474 struct ksmbd_conn *conn = work->conn;
4475 struct smb2_file_alt_name_info *file_info;
4476 struct dentry *dentry = fp->filp->f_path.dentry;
4479 spin_lock(&dentry->d_lock);
4480 file_info = (struct smb2_file_alt_name_info *)rsp->Buffer;
4481 conv_len = ksmbd_extract_shortname(conn,
4482 dentry->d_name.name,
4483 file_info->FileName);
4484 spin_unlock(&dentry->d_lock);
4485 file_info->FileNameLength = cpu_to_le32(conv_len);
4486 rsp->OutputBufferLength =
4487 cpu_to_le32(sizeof(struct smb2_file_alt_name_info) + conv_len);
4488 inc_rfc1001_len(rsp_org, le32_to_cpu(rsp->OutputBufferLength));
4491 static void get_file_stream_info(struct ksmbd_work *work,
4492 struct smb2_query_info_rsp *rsp,
4493 struct ksmbd_file *fp,
4496 struct ksmbd_conn *conn = work->conn;
4497 struct smb2_file_stream_info *file_info;
4498 char *stream_name, *xattr_list = NULL, *stream_buf;
4500 const struct path *path = &fp->filp->f_path;
4501 ssize_t xattr_list_len;
4502 int nbytes = 0, streamlen, stream_name_len, next, idx = 0;
4504 struct smb2_query_info_req *req = ksmbd_req_buf_next(work);
4506 generic_fillattr(file_mnt_user_ns(fp->filp), file_inode(fp->filp),
4508 file_info = (struct smb2_file_stream_info *)rsp->Buffer;
4511 smb2_calc_max_out_buf_len(work, 8,
4512 le32_to_cpu(req->OutputBufferLength));
4513 if (buf_free_len < 0)
4516 xattr_list_len = ksmbd_vfs_listxattr(path->dentry, &xattr_list);
4517 if (xattr_list_len < 0) {
4519 } else if (!xattr_list_len) {
4520 ksmbd_debug(SMB, "empty xattr in the file\n");
4524 while (idx < xattr_list_len) {
4525 stream_name = xattr_list + idx;
4526 streamlen = strlen(stream_name);
4527 idx += streamlen + 1;
4529 ksmbd_debug(SMB, "%s, len %d\n", stream_name, streamlen);
4531 if (strncmp(&stream_name[XATTR_USER_PREFIX_LEN],
4532 STREAM_PREFIX, STREAM_PREFIX_LEN))
4535 stream_name_len = streamlen - (XATTR_USER_PREFIX_LEN +
4537 streamlen = stream_name_len;
4541 stream_buf = kmalloc(streamlen + 1, GFP_KERNEL);
4545 streamlen = snprintf(stream_buf, streamlen + 1,
4546 ":%s", &stream_name[XATTR_NAME_STREAM_LEN]);
4548 next = sizeof(struct smb2_file_stream_info) + streamlen * 2;
4549 if (next > buf_free_len) {
4554 file_info = (struct smb2_file_stream_info *)&rsp->Buffer[nbytes];
4555 streamlen = smbConvertToUTF16((__le16 *)file_info->StreamName,
4556 stream_buf, streamlen,
4557 conn->local_nls, 0);
4560 file_info->StreamNameLength = cpu_to_le32(streamlen);
4561 file_info->StreamSize = cpu_to_le64(stream_name_len);
4562 file_info->StreamAllocationSize = cpu_to_le64(stream_name_len);
4565 buf_free_len -= next;
4566 file_info->NextEntryOffset = cpu_to_le32(next);
4570 if (!S_ISDIR(stat.mode) &&
4571 buf_free_len >= sizeof(struct smb2_file_stream_info) + 7 * 2) {
4572 file_info = (struct smb2_file_stream_info *)
4573 &rsp->Buffer[nbytes];
4574 streamlen = smbConvertToUTF16((__le16 *)file_info->StreamName,
4575 "::$DATA", 7, conn->local_nls, 0);
4577 file_info->StreamNameLength = cpu_to_le32(streamlen);
4578 file_info->StreamSize = cpu_to_le64(stat.size);
4579 file_info->StreamAllocationSize = cpu_to_le64(stat.blocks << 9);
4580 nbytes += sizeof(struct smb2_file_stream_info) + streamlen;
4583 /* last entry offset should be 0 */
4584 file_info->NextEntryOffset = 0;
4587 rsp->OutputBufferLength = cpu_to_le32(nbytes);
4588 inc_rfc1001_len(rsp_org, nbytes);
4591 static void get_file_internal_info(struct smb2_query_info_rsp *rsp,
4592 struct ksmbd_file *fp, void *rsp_org)
4594 struct smb2_file_internal_info *file_info;
4597 generic_fillattr(file_mnt_user_ns(fp->filp), file_inode(fp->filp),
4599 file_info = (struct smb2_file_internal_info *)rsp->Buffer;
4600 file_info->IndexNumber = cpu_to_le64(stat.ino);
4601 rsp->OutputBufferLength =
4602 cpu_to_le32(sizeof(struct smb2_file_internal_info));
4603 inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_internal_info));
4606 static int get_file_network_open_info(struct smb2_query_info_rsp *rsp,
4607 struct ksmbd_file *fp, void *rsp_org)
4609 struct smb2_file_ntwrk_info *file_info;
4610 struct inode *inode;
4614 if (!(fp->daccess & FILE_READ_ATTRIBUTES_LE)) {
4615 pr_err("no right to read the attributes : 0x%x\n",
4620 file_info = (struct smb2_file_ntwrk_info *)rsp->Buffer;
4622 inode = file_inode(fp->filp);
4623 generic_fillattr(file_mnt_user_ns(fp->filp), inode, &stat);
4625 file_info->CreationTime = cpu_to_le64(fp->create_time);
4626 time = ksmbd_UnixTimeToNT(stat.atime);
4627 file_info->LastAccessTime = cpu_to_le64(time);
4628 time = ksmbd_UnixTimeToNT(stat.mtime);
4629 file_info->LastWriteTime = cpu_to_le64(time);
4630 time = ksmbd_UnixTimeToNT(stat.ctime);
4631 file_info->ChangeTime = cpu_to_le64(time);
4632 file_info->Attributes = fp->f_ci->m_fattr;
4633 file_info->AllocationSize =
4634 cpu_to_le64(get_allocation_size(inode, &stat));
4635 file_info->EndOfFile = S_ISDIR(stat.mode) ? 0 : cpu_to_le64(stat.size);
4636 file_info->Reserved = cpu_to_le32(0);
4637 rsp->OutputBufferLength =
4638 cpu_to_le32(sizeof(struct smb2_file_ntwrk_info));
4639 inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_ntwrk_info));
4643 static void get_file_ea_info(struct smb2_query_info_rsp *rsp, void *rsp_org)
4645 struct smb2_file_ea_info *file_info;
4647 file_info = (struct smb2_file_ea_info *)rsp->Buffer;
4648 file_info->EASize = 0;
4649 rsp->OutputBufferLength =
4650 cpu_to_le32(sizeof(struct smb2_file_ea_info));
4651 inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_ea_info));
4654 static void get_file_position_info(struct smb2_query_info_rsp *rsp,
4655 struct ksmbd_file *fp, void *rsp_org)
4657 struct smb2_file_pos_info *file_info;
4659 file_info = (struct smb2_file_pos_info *)rsp->Buffer;
4660 file_info->CurrentByteOffset = cpu_to_le64(fp->filp->f_pos);
4661 rsp->OutputBufferLength =
4662 cpu_to_le32(sizeof(struct smb2_file_pos_info));
4663 inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_pos_info));
4666 static void get_file_mode_info(struct smb2_query_info_rsp *rsp,
4667 struct ksmbd_file *fp, void *rsp_org)
4669 struct smb2_file_mode_info *file_info;
4671 file_info = (struct smb2_file_mode_info *)rsp->Buffer;
4672 file_info->Mode = fp->coption & FILE_MODE_INFO_MASK;
4673 rsp->OutputBufferLength =
4674 cpu_to_le32(sizeof(struct smb2_file_mode_info));
4675 inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_mode_info));
4678 static void get_file_compression_info(struct smb2_query_info_rsp *rsp,
4679 struct ksmbd_file *fp, void *rsp_org)
4681 struct smb2_file_comp_info *file_info;
4684 generic_fillattr(file_mnt_user_ns(fp->filp), file_inode(fp->filp),
4687 file_info = (struct smb2_file_comp_info *)rsp->Buffer;
4688 file_info->CompressedFileSize = cpu_to_le64(stat.blocks << 9);
4689 file_info->CompressionFormat = COMPRESSION_FORMAT_NONE;
4690 file_info->CompressionUnitShift = 0;
4691 file_info->ChunkShift = 0;
4692 file_info->ClusterShift = 0;
4693 memset(&file_info->Reserved[0], 0, 3);
4695 rsp->OutputBufferLength =
4696 cpu_to_le32(sizeof(struct smb2_file_comp_info));
4697 inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_comp_info));
4700 static int get_file_attribute_tag_info(struct smb2_query_info_rsp *rsp,
4701 struct ksmbd_file *fp, void *rsp_org)
4703 struct smb2_file_attr_tag_info *file_info;
4705 if (!(fp->daccess & FILE_READ_ATTRIBUTES_LE)) {
4706 pr_err("no right to read the attributes : 0x%x\n",
4711 file_info = (struct smb2_file_attr_tag_info *)rsp->Buffer;
4712 file_info->FileAttributes = fp->f_ci->m_fattr;
4713 file_info->ReparseTag = 0;
4714 rsp->OutputBufferLength =
4715 cpu_to_le32(sizeof(struct smb2_file_attr_tag_info));
4716 inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_attr_tag_info));
4720 static int find_file_posix_info(struct smb2_query_info_rsp *rsp,
4721 struct ksmbd_file *fp, void *rsp_org)
4723 struct smb311_posix_qinfo *file_info;
4724 struct inode *inode = file_inode(fp->filp);
4727 file_info = (struct smb311_posix_qinfo *)rsp->Buffer;
4728 file_info->CreationTime = cpu_to_le64(fp->create_time);
4729 time = ksmbd_UnixTimeToNT(inode->i_atime);
4730 file_info->LastAccessTime = cpu_to_le64(time);
4731 time = ksmbd_UnixTimeToNT(inode->i_mtime);
4732 file_info->LastWriteTime = cpu_to_le64(time);
4733 time = ksmbd_UnixTimeToNT(inode->i_ctime);
4734 file_info->ChangeTime = cpu_to_le64(time);
4735 file_info->DosAttributes = fp->f_ci->m_fattr;
4736 file_info->Inode = cpu_to_le64(inode->i_ino);
4737 file_info->EndOfFile = cpu_to_le64(inode->i_size);
4738 file_info->AllocationSize = cpu_to_le64(inode->i_blocks << 9);
4739 file_info->HardLinks = cpu_to_le32(inode->i_nlink);
4740 file_info->Mode = cpu_to_le32(inode->i_mode);
4741 file_info->DeviceId = cpu_to_le32(inode->i_rdev);
4742 rsp->OutputBufferLength =
4743 cpu_to_le32(sizeof(struct smb311_posix_qinfo));
4744 inc_rfc1001_len(rsp_org, sizeof(struct smb311_posix_qinfo));
4748 static int smb2_get_info_file(struct ksmbd_work *work,
4749 struct smb2_query_info_req *req,
4750 struct smb2_query_info_rsp *rsp)
4752 struct ksmbd_file *fp;
4753 int fileinfoclass = 0;
4755 int file_infoclass_size;
4756 unsigned int id = KSMBD_NO_FID, pid = KSMBD_NO_FID;
4758 if (test_share_config_flag(work->tcon->share_conf,
4759 KSMBD_SHARE_FLAG_PIPE)) {
4760 /* smb2 info file called for pipe */
4761 return smb2_get_info_file_pipe(work->sess, req, rsp,
4762 work->response_buf);
4765 if (work->next_smb2_rcv_hdr_off) {
4766 if (!has_file_id(req->VolatileFileId)) {
4767 ksmbd_debug(SMB, "Compound request set FID = %llu\n",
4768 work->compound_fid);
4769 id = work->compound_fid;
4770 pid = work->compound_pfid;
4774 if (!has_file_id(id)) {
4775 id = req->VolatileFileId;
4776 pid = req->PersistentFileId;
4779 fp = ksmbd_lookup_fd_slow(work, id, pid);
4783 fileinfoclass = req->FileInfoClass;
4785 switch (fileinfoclass) {
4786 case FILE_ACCESS_INFORMATION:
4787 get_file_access_info(rsp, fp, work->response_buf);
4788 file_infoclass_size = FILE_ACCESS_INFORMATION_SIZE;
4791 case FILE_BASIC_INFORMATION:
4792 rc = get_file_basic_info(rsp, fp, work->response_buf);
4793 file_infoclass_size = FILE_BASIC_INFORMATION_SIZE;
4796 case FILE_STANDARD_INFORMATION:
4797 get_file_standard_info(rsp, fp, work->response_buf);
4798 file_infoclass_size = FILE_STANDARD_INFORMATION_SIZE;
4801 case FILE_ALIGNMENT_INFORMATION:
4802 get_file_alignment_info(rsp, work->response_buf);
4803 file_infoclass_size = FILE_ALIGNMENT_INFORMATION_SIZE;
4806 case FILE_ALL_INFORMATION:
4807 rc = get_file_all_info(work, rsp, fp, work->response_buf);
4808 file_infoclass_size = FILE_ALL_INFORMATION_SIZE;
4811 case FILE_ALTERNATE_NAME_INFORMATION:
4812 get_file_alternate_info(work, rsp, fp, work->response_buf);
4813 file_infoclass_size = FILE_ALTERNATE_NAME_INFORMATION_SIZE;
4816 case FILE_STREAM_INFORMATION:
4817 get_file_stream_info(work, rsp, fp, work->response_buf);
4818 file_infoclass_size = FILE_STREAM_INFORMATION_SIZE;
4821 case FILE_INTERNAL_INFORMATION:
4822 get_file_internal_info(rsp, fp, work->response_buf);
4823 file_infoclass_size = FILE_INTERNAL_INFORMATION_SIZE;
4826 case FILE_NETWORK_OPEN_INFORMATION:
4827 rc = get_file_network_open_info(rsp, fp, work->response_buf);
4828 file_infoclass_size = FILE_NETWORK_OPEN_INFORMATION_SIZE;
4831 case FILE_EA_INFORMATION:
4832 get_file_ea_info(rsp, work->response_buf);
4833 file_infoclass_size = FILE_EA_INFORMATION_SIZE;
4836 case FILE_FULL_EA_INFORMATION:
4837 rc = smb2_get_ea(work, fp, req, rsp, work->response_buf);
4838 file_infoclass_size = FILE_FULL_EA_INFORMATION_SIZE;
4841 case FILE_POSITION_INFORMATION:
4842 get_file_position_info(rsp, fp, work->response_buf);
4843 file_infoclass_size = FILE_POSITION_INFORMATION_SIZE;
4846 case FILE_MODE_INFORMATION:
4847 get_file_mode_info(rsp, fp, work->response_buf);
4848 file_infoclass_size = FILE_MODE_INFORMATION_SIZE;
4851 case FILE_COMPRESSION_INFORMATION:
4852 get_file_compression_info(rsp, fp, work->response_buf);
4853 file_infoclass_size = FILE_COMPRESSION_INFORMATION_SIZE;
4856 case FILE_ATTRIBUTE_TAG_INFORMATION:
4857 rc = get_file_attribute_tag_info(rsp, fp, work->response_buf);
4858 file_infoclass_size = FILE_ATTRIBUTE_TAG_INFORMATION_SIZE;
4860 case SMB_FIND_FILE_POSIX_INFO:
4861 if (!work->tcon->posix_extensions) {
4862 pr_err("client doesn't negotiate with SMB3.1.1 POSIX Extensions\n");
4865 rc = find_file_posix_info(rsp, fp, work->response_buf);
4866 file_infoclass_size = sizeof(struct smb311_posix_qinfo);
4870 ksmbd_debug(SMB, "fileinfoclass %d not supported yet\n",
4875 rc = buffer_check_err(le32_to_cpu(req->OutputBufferLength),
4876 rsp, work->response_buf,
4877 file_infoclass_size);
4878 ksmbd_fd_put(work, fp);
4882 static int smb2_get_info_filesystem(struct ksmbd_work *work,
4883 struct smb2_query_info_req *req,
4884 struct smb2_query_info_rsp *rsp)
4886 struct ksmbd_session *sess = work->sess;
4887 struct ksmbd_conn *conn = work->conn;
4888 struct ksmbd_share_config *share = work->tcon->share_conf;
4889 int fsinfoclass = 0;
4890 struct kstatfs stfs;
4893 int fs_infoclass_size = 0;
4895 rc = kern_path(share->path, LOOKUP_NO_SYMLINKS, &path);
4897 pr_err("cannot create vfs path\n");
4901 rc = vfs_statfs(&path, &stfs);
4903 pr_err("cannot do stat of path %s\n", share->path);
4908 fsinfoclass = req->FileInfoClass;
4910 switch (fsinfoclass) {
4911 case FS_DEVICE_INFORMATION:
4913 struct filesystem_device_info *info;
4915 info = (struct filesystem_device_info *)rsp->Buffer;
4917 info->DeviceType = cpu_to_le32(stfs.f_type);
4918 info->DeviceCharacteristics = cpu_to_le32(0x00000020);
4919 rsp->OutputBufferLength = cpu_to_le32(8);
4920 inc_rfc1001_len(work->response_buf, 8);
4921 fs_infoclass_size = FS_DEVICE_INFORMATION_SIZE;
4924 case FS_ATTRIBUTE_INFORMATION:
4926 struct filesystem_attribute_info *info;
4929 info = (struct filesystem_attribute_info *)rsp->Buffer;
4930 info->Attributes = cpu_to_le32(FILE_SUPPORTS_OBJECT_IDS |
4931 FILE_PERSISTENT_ACLS |
4932 FILE_UNICODE_ON_DISK |
4933 FILE_CASE_PRESERVED_NAMES |
4934 FILE_CASE_SENSITIVE_SEARCH |
4935 FILE_SUPPORTS_BLOCK_REFCOUNTING);
4937 info->Attributes |= cpu_to_le32(server_conf.share_fake_fscaps);
4939 info->MaxPathNameComponentLength = cpu_to_le32(stfs.f_namelen);
4940 len = smbConvertToUTF16((__le16 *)info->FileSystemName,
4941 "NTFS", PATH_MAX, conn->local_nls, 0);
4943 info->FileSystemNameLen = cpu_to_le32(len);
4944 sz = sizeof(struct filesystem_attribute_info) - 2 + len;
4945 rsp->OutputBufferLength = cpu_to_le32(sz);
4946 inc_rfc1001_len(work->response_buf, sz);
4947 fs_infoclass_size = FS_ATTRIBUTE_INFORMATION_SIZE;
4950 case FS_VOLUME_INFORMATION:
4952 struct filesystem_vol_info *info;
4954 unsigned int serial_crc = 0;
4956 info = (struct filesystem_vol_info *)(rsp->Buffer);
4957 info->VolumeCreationTime = 0;
4958 serial_crc = crc32_le(serial_crc, share->name,
4959 strlen(share->name));
4960 serial_crc = crc32_le(serial_crc, share->path,
4961 strlen(share->path));
4962 serial_crc = crc32_le(serial_crc, ksmbd_netbios_name(),
4963 strlen(ksmbd_netbios_name()));
4964 /* Taking dummy value of serial number*/
4965 info->SerialNumber = cpu_to_le32(serial_crc);
4966 len = smbConvertToUTF16((__le16 *)info->VolumeLabel,
4967 share->name, PATH_MAX,
4968 conn->local_nls, 0);
4970 info->VolumeLabelSize = cpu_to_le32(len);
4972 sz = sizeof(struct filesystem_vol_info) - 2 + len;
4973 rsp->OutputBufferLength = cpu_to_le32(sz);
4974 inc_rfc1001_len(work->response_buf, sz);
4975 fs_infoclass_size = FS_VOLUME_INFORMATION_SIZE;
4978 case FS_SIZE_INFORMATION:
4980 struct filesystem_info *info;
4982 info = (struct filesystem_info *)(rsp->Buffer);
4983 info->TotalAllocationUnits = cpu_to_le64(stfs.f_blocks);
4984 info->FreeAllocationUnits = cpu_to_le64(stfs.f_bfree);
4985 info->SectorsPerAllocationUnit = cpu_to_le32(1);
4986 info->BytesPerSector = cpu_to_le32(stfs.f_bsize);
4987 rsp->OutputBufferLength = cpu_to_le32(24);
4988 inc_rfc1001_len(work->response_buf, 24);
4989 fs_infoclass_size = FS_SIZE_INFORMATION_SIZE;
4992 case FS_FULL_SIZE_INFORMATION:
4994 struct smb2_fs_full_size_info *info;
4996 info = (struct smb2_fs_full_size_info *)(rsp->Buffer);
4997 info->TotalAllocationUnits = cpu_to_le64(stfs.f_blocks);
4998 info->CallerAvailableAllocationUnits =
4999 cpu_to_le64(stfs.f_bavail);
5000 info->ActualAvailableAllocationUnits =
5001 cpu_to_le64(stfs.f_bfree);
5002 info->SectorsPerAllocationUnit = cpu_to_le32(1);
5003 info->BytesPerSector = cpu_to_le32(stfs.f_bsize);
5004 rsp->OutputBufferLength = cpu_to_le32(32);
5005 inc_rfc1001_len(work->response_buf, 32);
5006 fs_infoclass_size = FS_FULL_SIZE_INFORMATION_SIZE;
5009 case FS_OBJECT_ID_INFORMATION:
5011 struct object_id_info *info;
5013 info = (struct object_id_info *)(rsp->Buffer);
5015 if (!user_guest(sess->user))
5016 memcpy(info->objid, user_passkey(sess->user), 16);
5018 memset(info->objid, 0, 16);
5020 info->extended_info.magic = cpu_to_le32(EXTENDED_INFO_MAGIC);
5021 info->extended_info.version = cpu_to_le32(1);
5022 info->extended_info.release = cpu_to_le32(1);
5023 info->extended_info.rel_date = 0;
5024 memcpy(info->extended_info.version_string, "1.1.0", strlen("1.1.0"));
5025 rsp->OutputBufferLength = cpu_to_le32(64);
5026 inc_rfc1001_len(work->response_buf, 64);
5027 fs_infoclass_size = FS_OBJECT_ID_INFORMATION_SIZE;
5030 case FS_SECTOR_SIZE_INFORMATION:
5032 struct smb3_fs_ss_info *info;
5033 unsigned int sector_size =
5034 min_t(unsigned int, path.mnt->mnt_sb->s_blocksize, 4096);
5036 info = (struct smb3_fs_ss_info *)(rsp->Buffer);
5038 info->LogicalBytesPerSector = cpu_to_le32(sector_size);
5039 info->PhysicalBytesPerSectorForAtomicity =
5040 cpu_to_le32(sector_size);
5041 info->PhysicalBytesPerSectorForPerf = cpu_to_le32(sector_size);
5042 info->FSEffPhysicalBytesPerSectorForAtomicity =
5043 cpu_to_le32(sector_size);
5044 info->Flags = cpu_to_le32(SSINFO_FLAGS_ALIGNED_DEVICE |
5045 SSINFO_FLAGS_PARTITION_ALIGNED_ON_DEVICE);
5046 info->ByteOffsetForSectorAlignment = 0;
5047 info->ByteOffsetForPartitionAlignment = 0;
5048 rsp->OutputBufferLength = cpu_to_le32(28);
5049 inc_rfc1001_len(work->response_buf, 28);
5050 fs_infoclass_size = FS_SECTOR_SIZE_INFORMATION_SIZE;
5053 case FS_CONTROL_INFORMATION:
5056 * TODO : The current implementation is based on
5057 * test result with win7(NTFS) server. It's need to
5058 * modify this to get valid Quota values
5061 struct smb2_fs_control_info *info;
5063 info = (struct smb2_fs_control_info *)(rsp->Buffer);
5064 info->FreeSpaceStartFiltering = 0;
5065 info->FreeSpaceThreshold = 0;
5066 info->FreeSpaceStopFiltering = 0;
5067 info->DefaultQuotaThreshold = cpu_to_le64(SMB2_NO_FID);
5068 info->DefaultQuotaLimit = cpu_to_le64(SMB2_NO_FID);
5070 rsp->OutputBufferLength = cpu_to_le32(48);
5071 inc_rfc1001_len(work->response_buf, 48);
5072 fs_infoclass_size = FS_CONTROL_INFORMATION_SIZE;
5075 case FS_POSIX_INFORMATION:
5077 struct filesystem_posix_info *info;
5079 if (!work->tcon->posix_extensions) {
5080 pr_err("client doesn't negotiate with SMB3.1.1 POSIX Extensions\n");
5083 info = (struct filesystem_posix_info *)(rsp->Buffer);
5084 info->OptimalTransferSize = cpu_to_le32(stfs.f_bsize);
5085 info->BlockSize = cpu_to_le32(stfs.f_bsize);
5086 info->TotalBlocks = cpu_to_le64(stfs.f_blocks);
5087 info->BlocksAvail = cpu_to_le64(stfs.f_bfree);
5088 info->UserBlocksAvail = cpu_to_le64(stfs.f_bavail);
5089 info->TotalFileNodes = cpu_to_le64(stfs.f_files);
5090 info->FreeFileNodes = cpu_to_le64(stfs.f_ffree);
5091 rsp->OutputBufferLength = cpu_to_le32(56);
5092 inc_rfc1001_len(work->response_buf, 56);
5093 fs_infoclass_size = FS_POSIX_INFORMATION_SIZE;
5101 rc = buffer_check_err(le32_to_cpu(req->OutputBufferLength),
5102 rsp, work->response_buf,
5108 static int smb2_get_info_sec(struct ksmbd_work *work,
5109 struct smb2_query_info_req *req,
5110 struct smb2_query_info_rsp *rsp)
5112 struct ksmbd_file *fp;
5113 struct user_namespace *user_ns;
5114 struct smb_ntsd *pntsd = (struct smb_ntsd *)rsp->Buffer, *ppntsd = NULL;
5115 struct smb_fattr fattr = {{0}};
5116 struct inode *inode;
5117 __u32 secdesclen = 0;
5118 unsigned int id = KSMBD_NO_FID, pid = KSMBD_NO_FID;
5119 int addition_info = le32_to_cpu(req->AdditionalInformation);
5120 int rc = 0, ppntsd_size = 0;
5122 if (addition_info & ~(OWNER_SECINFO | GROUP_SECINFO | DACL_SECINFO |
5123 PROTECTED_DACL_SECINFO |
5124 UNPROTECTED_DACL_SECINFO)) {
5125 ksmbd_debug(SMB, "Unsupported addition info: 0x%x)\n",
5128 pntsd->revision = cpu_to_le16(1);
5129 pntsd->type = cpu_to_le16(SELF_RELATIVE | DACL_PROTECTED);
5130 pntsd->osidoffset = 0;
5131 pntsd->gsidoffset = 0;
5132 pntsd->sacloffset = 0;
5133 pntsd->dacloffset = 0;
5135 secdesclen = sizeof(struct smb_ntsd);
5136 rsp->OutputBufferLength = cpu_to_le32(secdesclen);
5137 inc_rfc1001_len(work->response_buf, secdesclen);
5142 if (work->next_smb2_rcv_hdr_off) {
5143 if (!has_file_id(req->VolatileFileId)) {
5144 ksmbd_debug(SMB, "Compound request set FID = %llu\n",
5145 work->compound_fid);
5146 id = work->compound_fid;
5147 pid = work->compound_pfid;
5151 if (!has_file_id(id)) {
5152 id = req->VolatileFileId;
5153 pid = req->PersistentFileId;
5156 fp = ksmbd_lookup_fd_slow(work, id, pid);
5160 user_ns = file_mnt_user_ns(fp->filp);
5161 inode = file_inode(fp->filp);
5162 ksmbd_acls_fattr(&fattr, user_ns, inode);
5164 if (test_share_config_flag(work->tcon->share_conf,
5165 KSMBD_SHARE_FLAG_ACL_XATTR))
5166 ppntsd_size = ksmbd_vfs_get_sd_xattr(work->conn, user_ns,
5167 fp->filp->f_path.dentry,
5170 /* Check if sd buffer size exceeds response buffer size */
5171 if (smb2_resp_buf_len(work, 8) > ppntsd_size)
5172 rc = build_sec_desc(user_ns, pntsd, ppntsd, ppntsd_size,
5173 addition_info, &secdesclen, &fattr);
5174 posix_acl_release(fattr.cf_acls);
5175 posix_acl_release(fattr.cf_dacls);
5177 ksmbd_fd_put(work, fp);
5181 rsp->OutputBufferLength = cpu_to_le32(secdesclen);
5182 inc_rfc1001_len(work->response_buf, secdesclen);
5187 * smb2_query_info() - handler for smb2 query info command
5188 * @work: smb work containing query info request buffer
5190 * Return: 0 on success, otherwise error
5192 int smb2_query_info(struct ksmbd_work *work)
5194 struct smb2_query_info_req *req;
5195 struct smb2_query_info_rsp *rsp;
5198 WORK_BUFFERS(work, req, rsp);
5200 ksmbd_debug(SMB, "GOT query info request\n");
5202 switch (req->InfoType) {
5203 case SMB2_O_INFO_FILE:
5204 ksmbd_debug(SMB, "GOT SMB2_O_INFO_FILE\n");
5205 rc = smb2_get_info_file(work, req, rsp);
5207 case SMB2_O_INFO_FILESYSTEM:
5208 ksmbd_debug(SMB, "GOT SMB2_O_INFO_FILESYSTEM\n");
5209 rc = smb2_get_info_filesystem(work, req, rsp);
5211 case SMB2_O_INFO_SECURITY:
5212 ksmbd_debug(SMB, "GOT SMB2_O_INFO_SECURITY\n");
5213 rc = smb2_get_info_sec(work, req, rsp);
5216 ksmbd_debug(SMB, "InfoType %d not supported yet\n",
5223 rsp->hdr.Status = STATUS_ACCESS_DENIED;
5224 else if (rc == -ENOENT)
5225 rsp->hdr.Status = STATUS_FILE_CLOSED;
5226 else if (rc == -EIO)
5227 rsp->hdr.Status = STATUS_UNEXPECTED_IO_ERROR;
5228 else if (rc == -EOPNOTSUPP || rsp->hdr.Status == 0)
5229 rsp->hdr.Status = STATUS_INVALID_INFO_CLASS;
5230 smb2_set_err_rsp(work);
5232 ksmbd_debug(SMB, "error while processing smb2 query rc = %d\n",
5236 rsp->StructureSize = cpu_to_le16(9);
5237 rsp->OutputBufferOffset = cpu_to_le16(72);
5238 inc_rfc1001_len(work->response_buf, 8);
5243 * smb2_close_pipe() - handler for closing IPC pipe
5244 * @work: smb work containing close request buffer
5248 static noinline int smb2_close_pipe(struct ksmbd_work *work)
5251 struct smb2_close_req *req = smb2_get_msg(work->request_buf);
5252 struct smb2_close_rsp *rsp = smb2_get_msg(work->response_buf);
5254 id = req->VolatileFileId;
5255 ksmbd_session_rpc_close(work->sess, id);
5257 rsp->StructureSize = cpu_to_le16(60);
5260 rsp->CreationTime = 0;
5261 rsp->LastAccessTime = 0;
5262 rsp->LastWriteTime = 0;
5263 rsp->ChangeTime = 0;
5264 rsp->AllocationSize = 0;
5266 rsp->Attributes = 0;
5267 inc_rfc1001_len(work->response_buf, 60);
5272 * smb2_close() - handler for smb2 close file command
5273 * @work: smb work containing close request buffer
5277 int smb2_close(struct ksmbd_work *work)
5279 u64 volatile_id = KSMBD_NO_FID;
5281 struct smb2_close_req *req;
5282 struct smb2_close_rsp *rsp;
5283 struct ksmbd_conn *conn = work->conn;
5284 struct ksmbd_file *fp;
5285 struct inode *inode;
5289 WORK_BUFFERS(work, req, rsp);
5291 if (test_share_config_flag(work->tcon->share_conf,
5292 KSMBD_SHARE_FLAG_PIPE)) {
5293 ksmbd_debug(SMB, "IPC pipe close request\n");
5294 return smb2_close_pipe(work);
5297 sess_id = le64_to_cpu(req->hdr.SessionId);
5298 if (req->hdr.Flags & SMB2_FLAGS_RELATED_OPERATIONS)
5299 sess_id = work->compound_sid;
5301 work->compound_sid = 0;
5302 if (check_session_id(conn, sess_id)) {
5303 work->compound_sid = sess_id;
5305 rsp->hdr.Status = STATUS_USER_SESSION_DELETED;
5306 if (req->hdr.Flags & SMB2_FLAGS_RELATED_OPERATIONS)
5307 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
5312 if (work->next_smb2_rcv_hdr_off &&
5313 !has_file_id(req->VolatileFileId)) {
5314 if (!has_file_id(work->compound_fid)) {
5315 /* file already closed, return FILE_CLOSED */
5316 ksmbd_debug(SMB, "file already closed\n");
5317 rsp->hdr.Status = STATUS_FILE_CLOSED;
5322 "Compound request set FID = %llu:%llu\n",
5324 work->compound_pfid);
5325 volatile_id = work->compound_fid;
5327 /* file closed, stored id is not valid anymore */
5328 work->compound_fid = KSMBD_NO_FID;
5329 work->compound_pfid = KSMBD_NO_FID;
5332 volatile_id = req->VolatileFileId;
5334 ksmbd_debug(SMB, "volatile_id = %llu\n", volatile_id);
5336 rsp->StructureSize = cpu_to_le16(60);
5339 if (req->Flags == SMB2_CLOSE_FLAG_POSTQUERY_ATTRIB) {
5340 fp = ksmbd_lookup_fd_fast(work, volatile_id);
5346 inode = file_inode(fp->filp);
5347 rsp->Flags = SMB2_CLOSE_FLAG_POSTQUERY_ATTRIB;
5348 rsp->AllocationSize = S_ISDIR(inode->i_mode) ? 0 :
5349 cpu_to_le64(inode->i_blocks << 9);
5350 rsp->EndOfFile = cpu_to_le64(inode->i_size);
5351 rsp->Attributes = fp->f_ci->m_fattr;
5352 rsp->CreationTime = cpu_to_le64(fp->create_time);
5353 time = ksmbd_UnixTimeToNT(inode->i_atime);
5354 rsp->LastAccessTime = cpu_to_le64(time);
5355 time = ksmbd_UnixTimeToNT(inode->i_mtime);
5356 rsp->LastWriteTime = cpu_to_le64(time);
5357 time = ksmbd_UnixTimeToNT(inode->i_ctime);
5358 rsp->ChangeTime = cpu_to_le64(time);
5359 ksmbd_fd_put(work, fp);
5362 rsp->AllocationSize = 0;
5364 rsp->Attributes = 0;
5365 rsp->CreationTime = 0;
5366 rsp->LastAccessTime = 0;
5367 rsp->LastWriteTime = 0;
5368 rsp->ChangeTime = 0;
5371 err = ksmbd_close_fd(work, volatile_id);
5374 if (rsp->hdr.Status == 0)
5375 rsp->hdr.Status = STATUS_FILE_CLOSED;
5376 smb2_set_err_rsp(work);
5378 inc_rfc1001_len(work->response_buf, 60);
5385 * smb2_echo() - handler for smb2 echo(ping) command
5386 * @work: smb work containing echo request buffer
5390 int smb2_echo(struct ksmbd_work *work)
5392 struct smb2_echo_rsp *rsp = smb2_get_msg(work->response_buf);
5394 rsp->StructureSize = cpu_to_le16(4);
5396 inc_rfc1001_len(work->response_buf, 4);
5400 static int smb2_rename(struct ksmbd_work *work,
5401 struct ksmbd_file *fp,
5402 struct user_namespace *user_ns,
5403 struct smb2_file_rename_info *file_info,
5404 struct nls_table *local_nls)
5406 struct ksmbd_share_config *share = fp->tcon->share_conf;
5407 char *new_name = NULL, *abs_oldname = NULL, *old_name = NULL;
5408 char *pathname = NULL;
5410 bool file_present = true;
5413 ksmbd_debug(SMB, "setting FILE_RENAME_INFO\n");
5414 pathname = kmalloc(PATH_MAX, GFP_KERNEL);
5418 abs_oldname = file_path(fp->filp, pathname, PATH_MAX);
5419 if (IS_ERR(abs_oldname)) {
5423 old_name = strrchr(abs_oldname, '/');
5424 if (old_name && old_name[1] != '\0') {
5427 ksmbd_debug(SMB, "can't get last component in path %s\n",
5433 new_name = smb2_get_name(file_info->FileName,
5434 le32_to_cpu(file_info->FileNameLength),
5436 if (IS_ERR(new_name)) {
5437 rc = PTR_ERR(new_name);
5441 if (strchr(new_name, ':')) {
5443 char *xattr_stream_name, *stream_name = NULL;
5444 size_t xattr_stream_size;
5447 rc = parse_stream_name(new_name, &stream_name, &s_type);
5451 len = strlen(new_name);
5452 if (len > 0 && new_name[len - 1] != '/') {
5453 pr_err("not allow base filename in rename\n");
5458 rc = ksmbd_vfs_xattr_stream_name(stream_name,
5465 rc = ksmbd_vfs_setxattr(user_ns,
5466 fp->filp->f_path.dentry,
5470 pr_err("failed to store stream name in xattr: %d\n",
5479 ksmbd_debug(SMB, "new name %s\n", new_name);
5480 rc = ksmbd_vfs_kern_path(work, new_name, LOOKUP_NO_SYMLINKS, &path, 1);
5484 file_present = false;
5489 if (ksmbd_share_veto_filename(share, new_name)) {
5491 ksmbd_debug(SMB, "Can't rename vetoed file: %s\n", new_name);
5495 if (file_info->ReplaceIfExists) {
5497 rc = ksmbd_vfs_remove_file(work, new_name);
5499 if (rc != -ENOTEMPTY)
5501 ksmbd_debug(SMB, "cannot delete %s, rc %d\n",
5508 strncmp(old_name, path.dentry->d_name.name, strlen(old_name))) {
5511 "cannot rename already existing file\n");
5516 rc = ksmbd_vfs_fp_rename(work, fp, new_name);
5519 if (!IS_ERR(new_name))
5524 static int smb2_create_link(struct ksmbd_work *work,
5525 struct ksmbd_share_config *share,
5526 struct smb2_file_link_info *file_info,
5527 unsigned int buf_len, struct file *filp,
5528 struct nls_table *local_nls)
5530 char *link_name = NULL, *target_name = NULL, *pathname = NULL;
5532 bool file_present = true;
5535 if (buf_len < (u64)sizeof(struct smb2_file_link_info) +
5536 le32_to_cpu(file_info->FileNameLength))
5539 ksmbd_debug(SMB, "setting FILE_LINK_INFORMATION\n");
5540 pathname = kmalloc(PATH_MAX, GFP_KERNEL);
5544 link_name = smb2_get_name(file_info->FileName,
5545 le32_to_cpu(file_info->FileNameLength),
5547 if (IS_ERR(link_name) || S_ISDIR(file_inode(filp)->i_mode)) {
5552 ksmbd_debug(SMB, "link name is %s\n", link_name);
5553 target_name = file_path(filp, pathname, PATH_MAX);
5554 if (IS_ERR(target_name)) {
5559 ksmbd_debug(SMB, "target name is %s\n", target_name);
5560 rc = ksmbd_vfs_kern_path(work, link_name, LOOKUP_NO_SYMLINKS, &path, 0);
5564 file_present = false;
5569 if (file_info->ReplaceIfExists) {
5571 rc = ksmbd_vfs_remove_file(work, link_name);
5574 ksmbd_debug(SMB, "cannot delete %s\n",
5582 ksmbd_debug(SMB, "link already exists\n");
5587 rc = ksmbd_vfs_link(work, target_name, link_name);
5591 if (!IS_ERR(link_name))
5597 static int set_file_basic_info(struct ksmbd_file *fp,
5598 struct smb2_file_basic_info *file_info,
5599 struct ksmbd_share_config *share)
5603 struct inode *inode;
5604 struct user_namespace *user_ns;
5607 if (!(fp->daccess & FILE_WRITE_ATTRIBUTES_LE))
5612 inode = file_inode(filp);
5613 user_ns = file_mnt_user_ns(filp);
5615 if (file_info->CreationTime)
5616 fp->create_time = le64_to_cpu(file_info->CreationTime);
5618 if (file_info->LastAccessTime) {
5619 attrs.ia_atime = ksmbd_NTtimeToUnix(file_info->LastAccessTime);
5620 attrs.ia_valid |= (ATTR_ATIME | ATTR_ATIME_SET);
5623 attrs.ia_valid |= ATTR_CTIME;
5624 if (file_info->ChangeTime)
5625 attrs.ia_ctime = ksmbd_NTtimeToUnix(file_info->ChangeTime);
5627 attrs.ia_ctime = inode->i_ctime;
5629 if (file_info->LastWriteTime) {
5630 attrs.ia_mtime = ksmbd_NTtimeToUnix(file_info->LastWriteTime);
5631 attrs.ia_valid |= (ATTR_MTIME | ATTR_MTIME_SET);
5634 if (file_info->Attributes) {
5635 if (!S_ISDIR(inode->i_mode) &&
5636 file_info->Attributes & FILE_ATTRIBUTE_DIRECTORY_LE) {
5637 pr_err("can't change a file to a directory\n");
5641 if (!(S_ISDIR(inode->i_mode) && file_info->Attributes == FILE_ATTRIBUTE_NORMAL_LE))
5642 fp->f_ci->m_fattr = file_info->Attributes |
5643 (fp->f_ci->m_fattr & FILE_ATTRIBUTE_DIRECTORY_LE);
5646 if (test_share_config_flag(share, KSMBD_SHARE_FLAG_STORE_DOS_ATTRS) &&
5647 (file_info->CreationTime || file_info->Attributes)) {
5648 struct xattr_dos_attrib da = {0};
5651 da.itime = fp->itime;
5652 da.create_time = fp->create_time;
5653 da.attr = le32_to_cpu(fp->f_ci->m_fattr);
5654 da.flags = XATTR_DOSINFO_ATTRIB | XATTR_DOSINFO_CREATE_TIME |
5655 XATTR_DOSINFO_ITIME;
5657 rc = ksmbd_vfs_set_dos_attrib_xattr(user_ns,
5658 filp->f_path.dentry, &da);
5661 "failed to restore file attribute in EA\n");
5665 if (attrs.ia_valid) {
5666 struct dentry *dentry = filp->f_path.dentry;
5667 struct inode *inode = d_inode(dentry);
5669 if (IS_IMMUTABLE(inode) || IS_APPEND(inode))
5673 inode->i_ctime = attrs.ia_ctime;
5674 attrs.ia_valid &= ~ATTR_CTIME;
5675 rc = notify_change(user_ns, dentry, &attrs, NULL);
5676 inode_unlock(inode);
5681 static int set_file_allocation_info(struct ksmbd_work *work,
5682 struct ksmbd_file *fp,
5683 struct smb2_file_alloc_info *file_alloc_info)
5686 * TODO : It's working fine only when store dos attributes
5687 * is not yes. need to implement a logic which works
5688 * properly with any smb.conf option
5692 struct inode *inode;
5695 if (!(fp->daccess & FILE_WRITE_DATA_LE))
5698 alloc_blks = (le64_to_cpu(file_alloc_info->AllocationSize) + 511) >> 9;
5699 inode = file_inode(fp->filp);
5701 if (alloc_blks > inode->i_blocks) {
5702 smb_break_all_levII_oplock(work, fp, 1);
5703 rc = vfs_fallocate(fp->filp, FALLOC_FL_KEEP_SIZE, 0,
5705 if (rc && rc != -EOPNOTSUPP) {
5706 pr_err("vfs_fallocate is failed : %d\n", rc);
5709 } else if (alloc_blks < inode->i_blocks) {
5713 * Allocation size could be smaller than original one
5714 * which means allocated blocks in file should be
5715 * deallocated. use truncate to cut out it, but inode
5716 * size is also updated with truncate offset.
5717 * inode size is retained by backup inode size.
5719 size = i_size_read(inode);
5720 rc = ksmbd_vfs_truncate(work, fp, alloc_blks * 512);
5722 pr_err("truncate failed!, err %d\n", rc);
5725 if (size < alloc_blks * 512)
5726 i_size_write(inode, size);
5731 static int set_end_of_file_info(struct ksmbd_work *work, struct ksmbd_file *fp,
5732 struct smb2_file_eof_info *file_eof_info)
5735 struct inode *inode;
5738 if (!(fp->daccess & FILE_WRITE_DATA_LE))
5741 newsize = le64_to_cpu(file_eof_info->EndOfFile);
5742 inode = file_inode(fp->filp);
5745 * If FILE_END_OF_FILE_INFORMATION of set_info_file is called
5746 * on FAT32 shared device, truncate execution time is too long
5747 * and network error could cause from windows client. because
5748 * truncate of some filesystem like FAT32 fill zero data in
5751 if (inode->i_sb->s_magic != MSDOS_SUPER_MAGIC) {
5752 ksmbd_debug(SMB, "truncated to newsize %lld\n", newsize);
5753 rc = ksmbd_vfs_truncate(work, fp, newsize);
5755 ksmbd_debug(SMB, "truncate failed!, err %d\n", rc);
5764 static int set_rename_info(struct ksmbd_work *work, struct ksmbd_file *fp,
5765 struct smb2_file_rename_info *rename_info,
5766 unsigned int buf_len)
5768 struct user_namespace *user_ns;
5769 struct ksmbd_file *parent_fp;
5770 struct dentry *parent;
5771 struct dentry *dentry = fp->filp->f_path.dentry;
5774 if (!(fp->daccess & FILE_DELETE_LE)) {
5775 pr_err("no right to delete : 0x%x\n", fp->daccess);
5779 if (buf_len < (u64)sizeof(struct smb2_file_rename_info) +
5780 le32_to_cpu(rename_info->FileNameLength))
5783 user_ns = file_mnt_user_ns(fp->filp);
5784 if (ksmbd_stream_fd(fp))
5787 parent = dget_parent(dentry);
5788 ret = ksmbd_vfs_lock_parent(user_ns, parent, dentry);
5794 parent_fp = ksmbd_lookup_fd_inode(d_inode(parent));
5795 inode_unlock(d_inode(parent));
5799 if (parent_fp->daccess & FILE_DELETE_LE) {
5800 pr_err("parent dir is opened with delete access\n");
5801 ksmbd_fd_put(work, parent_fp);
5804 ksmbd_fd_put(work, parent_fp);
5807 return smb2_rename(work, fp, user_ns, rename_info,
5808 work->conn->local_nls);
5811 static int set_file_disposition_info(struct ksmbd_file *fp,
5812 struct smb2_file_disposition_info *file_info)
5814 struct inode *inode;
5816 if (!(fp->daccess & FILE_DELETE_LE)) {
5817 pr_err("no right to delete : 0x%x\n", fp->daccess);
5821 inode = file_inode(fp->filp);
5822 if (file_info->DeletePending) {
5823 if (S_ISDIR(inode->i_mode) &&
5824 ksmbd_vfs_empty_dir(fp) == -ENOTEMPTY)
5826 ksmbd_set_inode_pending_delete(fp);
5828 ksmbd_clear_inode_pending_delete(fp);
5833 static int set_file_position_info(struct ksmbd_file *fp,
5834 struct smb2_file_pos_info *file_info)
5836 loff_t current_byte_offset;
5837 unsigned long sector_size;
5838 struct inode *inode;
5840 inode = file_inode(fp->filp);
5841 current_byte_offset = le64_to_cpu(file_info->CurrentByteOffset);
5842 sector_size = inode->i_sb->s_blocksize;
5844 if (current_byte_offset < 0 ||
5845 (fp->coption == FILE_NO_INTERMEDIATE_BUFFERING_LE &&
5846 current_byte_offset & (sector_size - 1))) {
5847 pr_err("CurrentByteOffset is not valid : %llu\n",
5848 current_byte_offset);
5852 fp->filp->f_pos = current_byte_offset;
5856 static int set_file_mode_info(struct ksmbd_file *fp,
5857 struct smb2_file_mode_info *file_info)
5861 mode = file_info->Mode;
5863 if ((mode & ~FILE_MODE_INFO_MASK)) {
5864 pr_err("Mode is not valid : 0x%x\n", le32_to_cpu(mode));
5869 * TODO : need to implement consideration for
5870 * FILE_SYNCHRONOUS_IO_ALERT and FILE_SYNCHRONOUS_IO_NONALERT
5872 ksmbd_vfs_set_fadvise(fp->filp, mode);
5878 * smb2_set_info_file() - handler for smb2 set info command
5879 * @work: smb work containing set info command buffer
5880 * @fp: ksmbd_file pointer
5881 * @req: request buffer pointer
5882 * @share: ksmbd_share_config pointer
5884 * Return: 0 on success, otherwise error
5885 * TODO: need to implement an error handling for STATUS_INFO_LENGTH_MISMATCH
5887 static int smb2_set_info_file(struct ksmbd_work *work, struct ksmbd_file *fp,
5888 struct smb2_set_info_req *req,
5889 struct ksmbd_share_config *share)
5891 unsigned int buf_len = le32_to_cpu(req->BufferLength);
5893 switch (req->FileInfoClass) {
5894 case FILE_BASIC_INFORMATION:
5896 if (buf_len < sizeof(struct smb2_file_basic_info))
5899 return set_file_basic_info(fp, (struct smb2_file_basic_info *)req->Buffer, share);
5901 case FILE_ALLOCATION_INFORMATION:
5903 if (buf_len < sizeof(struct smb2_file_alloc_info))
5906 return set_file_allocation_info(work, fp,
5907 (struct smb2_file_alloc_info *)req->Buffer);
5909 case FILE_END_OF_FILE_INFORMATION:
5911 if (buf_len < sizeof(struct smb2_file_eof_info))
5914 return set_end_of_file_info(work, fp,
5915 (struct smb2_file_eof_info *)req->Buffer);
5917 case FILE_RENAME_INFORMATION:
5919 if (!test_tree_conn_flag(work->tcon, KSMBD_TREE_CONN_FLAG_WRITABLE)) {
5921 "User does not have write permission\n");
5925 if (buf_len < sizeof(struct smb2_file_rename_info))
5928 return set_rename_info(work, fp,
5929 (struct smb2_file_rename_info *)req->Buffer,
5932 case FILE_LINK_INFORMATION:
5934 if (buf_len < sizeof(struct smb2_file_link_info))
5937 return smb2_create_link(work, work->tcon->share_conf,
5938 (struct smb2_file_link_info *)req->Buffer,
5940 work->conn->local_nls);
5942 case FILE_DISPOSITION_INFORMATION:
5944 if (!test_tree_conn_flag(work->tcon, KSMBD_TREE_CONN_FLAG_WRITABLE)) {
5946 "User does not have write permission\n");
5950 if (buf_len < sizeof(struct smb2_file_disposition_info))
5953 return set_file_disposition_info(fp,
5954 (struct smb2_file_disposition_info *)req->Buffer);
5956 case FILE_FULL_EA_INFORMATION:
5958 if (!(fp->daccess & FILE_WRITE_EA_LE)) {
5959 pr_err("Not permitted to write ext attr: 0x%x\n",
5964 if (buf_len < sizeof(struct smb2_ea_info))
5967 return smb2_set_ea((struct smb2_ea_info *)req->Buffer,
5968 buf_len, &fp->filp->f_path);
5970 case FILE_POSITION_INFORMATION:
5972 if (buf_len < sizeof(struct smb2_file_pos_info))
5975 return set_file_position_info(fp, (struct smb2_file_pos_info *)req->Buffer);
5977 case FILE_MODE_INFORMATION:
5979 if (buf_len < sizeof(struct smb2_file_mode_info))
5982 return set_file_mode_info(fp, (struct smb2_file_mode_info *)req->Buffer);
5986 pr_err("Unimplemented Fileinfoclass :%d\n", req->FileInfoClass);
5990 static int smb2_set_info_sec(struct ksmbd_file *fp, int addition_info,
5991 char *buffer, int buf_len)
5993 struct smb_ntsd *pntsd = (struct smb_ntsd *)buffer;
5995 fp->saccess |= FILE_SHARE_DELETE_LE;
5997 return set_info_sec(fp->conn, fp->tcon, &fp->filp->f_path, pntsd,
6002 * smb2_set_info() - handler for smb2 set info command handler
6003 * @work: smb work containing set info request buffer
6005 * Return: 0 on success, otherwise error
6007 int smb2_set_info(struct ksmbd_work *work)
6009 struct smb2_set_info_req *req;
6010 struct smb2_set_info_rsp *rsp;
6011 struct ksmbd_file *fp;
6013 unsigned int id = KSMBD_NO_FID, pid = KSMBD_NO_FID;
6015 ksmbd_debug(SMB, "Received set info request\n");
6017 if (work->next_smb2_rcv_hdr_off) {
6018 req = ksmbd_req_buf_next(work);
6019 rsp = ksmbd_resp_buf_next(work);
6020 if (!has_file_id(req->VolatileFileId)) {
6021 ksmbd_debug(SMB, "Compound request set FID = %llu\n",
6022 work->compound_fid);
6023 id = work->compound_fid;
6024 pid = work->compound_pfid;
6027 req = smb2_get_msg(work->request_buf);
6028 rsp = smb2_get_msg(work->response_buf);
6031 if (!has_file_id(id)) {
6032 id = req->VolatileFileId;
6033 pid = req->PersistentFileId;
6036 fp = ksmbd_lookup_fd_slow(work, id, pid);
6038 ksmbd_debug(SMB, "Invalid id for close: %u\n", id);
6043 switch (req->InfoType) {
6044 case SMB2_O_INFO_FILE:
6045 ksmbd_debug(SMB, "GOT SMB2_O_INFO_FILE\n");
6046 rc = smb2_set_info_file(work, fp, req, work->tcon->share_conf);
6048 case SMB2_O_INFO_SECURITY:
6049 ksmbd_debug(SMB, "GOT SMB2_O_INFO_SECURITY\n");
6050 if (ksmbd_override_fsids(work)) {
6054 rc = smb2_set_info_sec(fp,
6055 le32_to_cpu(req->AdditionalInformation),
6057 le32_to_cpu(req->BufferLength));
6058 ksmbd_revert_fsids(work);
6067 rsp->StructureSize = cpu_to_le16(2);
6068 inc_rfc1001_len(work->response_buf, 2);
6069 ksmbd_fd_put(work, fp);
6073 if (rc == -EACCES || rc == -EPERM || rc == -EXDEV)
6074 rsp->hdr.Status = STATUS_ACCESS_DENIED;
6075 else if (rc == -EINVAL)
6076 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
6077 else if (rc == -ESHARE)
6078 rsp->hdr.Status = STATUS_SHARING_VIOLATION;
6079 else if (rc == -ENOENT)
6080 rsp->hdr.Status = STATUS_OBJECT_NAME_INVALID;
6081 else if (rc == -EBUSY || rc == -ENOTEMPTY)
6082 rsp->hdr.Status = STATUS_DIRECTORY_NOT_EMPTY;
6083 else if (rc == -EAGAIN)
6084 rsp->hdr.Status = STATUS_FILE_LOCK_CONFLICT;
6085 else if (rc == -EBADF || rc == -ESTALE)
6086 rsp->hdr.Status = STATUS_INVALID_HANDLE;
6087 else if (rc == -EEXIST)
6088 rsp->hdr.Status = STATUS_OBJECT_NAME_COLLISION;
6089 else if (rsp->hdr.Status == 0 || rc == -EOPNOTSUPP)
6090 rsp->hdr.Status = STATUS_INVALID_INFO_CLASS;
6091 smb2_set_err_rsp(work);
6092 ksmbd_fd_put(work, fp);
6093 ksmbd_debug(SMB, "error while processing smb2 query rc = %d\n", rc);
6098 * smb2_read_pipe() - handler for smb2 read from IPC pipe
6099 * @work: smb work containing read IPC pipe command buffer
6101 * Return: 0 on success, otherwise error
6103 static noinline int smb2_read_pipe(struct ksmbd_work *work)
6105 int nbytes = 0, err;
6107 struct ksmbd_rpc_command *rpc_resp;
6108 struct smb2_read_req *req = smb2_get_msg(work->request_buf);
6109 struct smb2_read_rsp *rsp = smb2_get_msg(work->response_buf);
6111 id = req->VolatileFileId;
6113 inc_rfc1001_len(work->response_buf, 16);
6114 rpc_resp = ksmbd_rpc_read(work->sess, id);
6116 if (rpc_resp->flags != KSMBD_RPC_OK) {
6121 work->aux_payload_buf =
6122 kvmalloc(rpc_resp->payload_sz, GFP_KERNEL | __GFP_ZERO);
6123 if (!work->aux_payload_buf) {
6128 memcpy(work->aux_payload_buf, rpc_resp->payload,
6129 rpc_resp->payload_sz);
6131 nbytes = rpc_resp->payload_sz;
6132 work->resp_hdr_sz = get_rfc1002_len(work->response_buf) + 4;
6133 work->aux_payload_sz = nbytes;
6137 rsp->StructureSize = cpu_to_le16(17);
6138 rsp->DataOffset = 80;
6140 rsp->DataLength = cpu_to_le32(nbytes);
6141 rsp->DataRemaining = 0;
6143 inc_rfc1001_len(work->response_buf, nbytes);
6147 rsp->hdr.Status = STATUS_UNEXPECTED_IO_ERROR;
6148 smb2_set_err_rsp(work);
6153 static int smb2_set_remote_key_for_rdma(struct ksmbd_work *work,
6154 struct smb2_buffer_desc_v1 *desc,
6156 __le16 ChannelInfoLength)
6158 unsigned int i, ch_count;
6160 if (work->conn->dialect == SMB30_PROT_ID &&
6161 Channel != SMB2_CHANNEL_RDMA_V1)
6164 ch_count = le16_to_cpu(ChannelInfoLength) / sizeof(*desc);
6165 if (ksmbd_debug_types & KSMBD_DEBUG_RDMA) {
6166 for (i = 0; i < ch_count; i++) {
6167 pr_info("RDMA r/w request %#x: token %#x, length %#x\n",
6169 le32_to_cpu(desc[i].token),
6170 le32_to_cpu(desc[i].length));
6176 work->need_invalidate_rkey =
6177 (Channel == SMB2_CHANNEL_RDMA_V1_INVALIDATE);
6178 if (Channel == SMB2_CHANNEL_RDMA_V1_INVALIDATE)
6179 work->remote_key = le32_to_cpu(desc->token);
6183 static ssize_t smb2_read_rdma_channel(struct ksmbd_work *work,
6184 struct smb2_read_req *req, void *data_buf,
6189 err = ksmbd_conn_rdma_write(work->conn, data_buf, length,
6190 (struct smb2_buffer_desc_v1 *)
6191 ((char *)req + le16_to_cpu(req->ReadChannelInfoOffset)),
6192 le16_to_cpu(req->ReadChannelInfoLength));
6200 * smb2_read() - handler for smb2 read from file
6201 * @work: smb work containing read command buffer
6203 * Return: 0 on success, otherwise error
6205 int smb2_read(struct ksmbd_work *work)
6207 struct ksmbd_conn *conn = work->conn;
6208 struct smb2_read_req *req;
6209 struct smb2_read_rsp *rsp;
6210 struct ksmbd_file *fp = NULL;
6212 size_t length, mincount;
6213 ssize_t nbytes = 0, remain_bytes = 0;
6215 bool is_rdma_channel = false;
6216 unsigned int max_read_size = conn->vals->max_read_size;
6218 WORK_BUFFERS(work, req, rsp);
6220 if (test_share_config_flag(work->tcon->share_conf,
6221 KSMBD_SHARE_FLAG_PIPE)) {
6222 ksmbd_debug(SMB, "IPC pipe read request\n");
6223 return smb2_read_pipe(work);
6226 if (req->Channel == SMB2_CHANNEL_RDMA_V1_INVALIDATE ||
6227 req->Channel == SMB2_CHANNEL_RDMA_V1) {
6228 is_rdma_channel = true;
6229 max_read_size = get_smbd_max_read_write_size();
6232 if (is_rdma_channel == true) {
6233 unsigned int ch_offset = le16_to_cpu(req->ReadChannelInfoOffset);
6235 if (ch_offset < offsetof(struct smb2_read_req, Buffer)) {
6239 err = smb2_set_remote_key_for_rdma(work,
6240 (struct smb2_buffer_desc_v1 *)
6241 ((char *)req + ch_offset),
6243 req->ReadChannelInfoLength);
6248 fp = ksmbd_lookup_fd_slow(work, req->VolatileFileId, req->PersistentFileId);
6254 if (!(fp->daccess & (FILE_READ_DATA_LE | FILE_READ_ATTRIBUTES_LE))) {
6255 pr_err("Not permitted to read : 0x%x\n", fp->daccess);
6260 offset = le64_to_cpu(req->Offset);
6261 length = le32_to_cpu(req->Length);
6262 mincount = le32_to_cpu(req->MinimumCount);
6264 if (length > max_read_size) {
6265 ksmbd_debug(SMB, "limiting read size to max size(%u)\n",
6271 ksmbd_debug(SMB, "filename %pD, offset %lld, len %zu\n",
6272 fp->filp, offset, length);
6274 work->aux_payload_buf = kvmalloc(length, GFP_KERNEL | __GFP_ZERO);
6275 if (!work->aux_payload_buf) {
6280 nbytes = ksmbd_vfs_read(work, fp, length, &offset);
6286 if ((nbytes == 0 && length != 0) || nbytes < mincount) {
6287 kvfree(work->aux_payload_buf);
6288 work->aux_payload_buf = NULL;
6289 rsp->hdr.Status = STATUS_END_OF_FILE;
6290 smb2_set_err_rsp(work);
6291 ksmbd_fd_put(work, fp);
6295 ksmbd_debug(SMB, "nbytes %zu, offset %lld mincount %zu\n",
6296 nbytes, offset, mincount);
6298 if (is_rdma_channel == true) {
6299 /* write data to the client using rdma channel */
6300 remain_bytes = smb2_read_rdma_channel(work, req,
6301 work->aux_payload_buf,
6303 kvfree(work->aux_payload_buf);
6304 work->aux_payload_buf = NULL;
6307 if (remain_bytes < 0) {
6308 err = (int)remain_bytes;
6313 rsp->StructureSize = cpu_to_le16(17);
6314 rsp->DataOffset = 80;
6316 rsp->DataLength = cpu_to_le32(nbytes);
6317 rsp->DataRemaining = cpu_to_le32(remain_bytes);
6319 inc_rfc1001_len(work->response_buf, 16);
6320 work->resp_hdr_sz = get_rfc1002_len(work->response_buf) + 4;
6321 work->aux_payload_sz = nbytes;
6322 inc_rfc1001_len(work->response_buf, nbytes);
6323 ksmbd_fd_put(work, fp);
6329 rsp->hdr.Status = STATUS_INVALID_DEVICE_REQUEST;
6330 else if (err == -EAGAIN)
6331 rsp->hdr.Status = STATUS_FILE_LOCK_CONFLICT;
6332 else if (err == -ENOENT)
6333 rsp->hdr.Status = STATUS_FILE_CLOSED;
6334 else if (err == -EACCES)
6335 rsp->hdr.Status = STATUS_ACCESS_DENIED;
6336 else if (err == -ESHARE)
6337 rsp->hdr.Status = STATUS_SHARING_VIOLATION;
6338 else if (err == -EINVAL)
6339 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
6341 rsp->hdr.Status = STATUS_INVALID_HANDLE;
6343 smb2_set_err_rsp(work);
6345 ksmbd_fd_put(work, fp);
6350 * smb2_write_pipe() - handler for smb2 write on IPC pipe
6351 * @work: smb work containing write IPC pipe command buffer
6353 * Return: 0 on success, otherwise error
6355 static noinline int smb2_write_pipe(struct ksmbd_work *work)
6357 struct smb2_write_req *req = smb2_get_msg(work->request_buf);
6358 struct smb2_write_rsp *rsp = smb2_get_msg(work->response_buf);
6359 struct ksmbd_rpc_command *rpc_resp;
6361 int err = 0, ret = 0;
6365 length = le32_to_cpu(req->Length);
6366 id = req->VolatileFileId;
6368 if ((u64)le16_to_cpu(req->DataOffset) + length >
6369 get_rfc1002_len(work->request_buf)) {
6370 pr_err("invalid write data offset %u, smb_len %u\n",
6371 le16_to_cpu(req->DataOffset),
6372 get_rfc1002_len(work->request_buf));
6377 data_buf = (char *)(((char *)&req->hdr.ProtocolId) +
6378 le16_to_cpu(req->DataOffset));
6380 rpc_resp = ksmbd_rpc_write(work->sess, id, data_buf, length);
6382 if (rpc_resp->flags == KSMBD_RPC_ENOTIMPLEMENTED) {
6383 rsp->hdr.Status = STATUS_NOT_SUPPORTED;
6385 smb2_set_err_rsp(work);
6388 if (rpc_resp->flags != KSMBD_RPC_OK) {
6389 rsp->hdr.Status = STATUS_INVALID_HANDLE;
6390 smb2_set_err_rsp(work);
6397 rsp->StructureSize = cpu_to_le16(17);
6398 rsp->DataOffset = 0;
6400 rsp->DataLength = cpu_to_le32(length);
6401 rsp->DataRemaining = 0;
6403 inc_rfc1001_len(work->response_buf, 16);
6407 rsp->hdr.Status = STATUS_INVALID_HANDLE;
6408 smb2_set_err_rsp(work);
6414 static ssize_t smb2_write_rdma_channel(struct ksmbd_work *work,
6415 struct smb2_write_req *req,
6416 struct ksmbd_file *fp,
6417 loff_t offset, size_t length, bool sync)
6423 data_buf = kvmalloc(length, GFP_KERNEL | __GFP_ZERO);
6427 ret = ksmbd_conn_rdma_read(work->conn, data_buf, length,
6428 (struct smb2_buffer_desc_v1 *)
6429 ((char *)req + le16_to_cpu(req->WriteChannelInfoOffset)),
6430 le16_to_cpu(req->WriteChannelInfoLength));
6436 ret = ksmbd_vfs_write(work, fp, data_buf, length, &offset, sync, &nbytes);
6445 * smb2_write() - handler for smb2 write from file
6446 * @work: smb work containing write command buffer
6448 * Return: 0 on success, otherwise error
6450 int smb2_write(struct ksmbd_work *work)
6452 struct smb2_write_req *req;
6453 struct smb2_write_rsp *rsp;
6454 struct ksmbd_file *fp = NULL;
6459 bool writethrough = false, is_rdma_channel = false;
6461 unsigned int max_write_size = work->conn->vals->max_write_size;
6463 WORK_BUFFERS(work, req, rsp);
6465 if (test_share_config_flag(work->tcon->share_conf, KSMBD_SHARE_FLAG_PIPE)) {
6466 ksmbd_debug(SMB, "IPC pipe write request\n");
6467 return smb2_write_pipe(work);
6470 offset = le64_to_cpu(req->Offset);
6471 length = le32_to_cpu(req->Length);
6473 if (req->Channel == SMB2_CHANNEL_RDMA_V1 ||
6474 req->Channel == SMB2_CHANNEL_RDMA_V1_INVALIDATE) {
6475 is_rdma_channel = true;
6476 max_write_size = get_smbd_max_read_write_size();
6477 length = le32_to_cpu(req->RemainingBytes);
6480 if (is_rdma_channel == true) {
6481 unsigned int ch_offset = le16_to_cpu(req->WriteChannelInfoOffset);
6483 if (req->Length != 0 || req->DataOffset != 0 ||
6484 ch_offset < offsetof(struct smb2_write_req, Buffer)) {
6488 err = smb2_set_remote_key_for_rdma(work,
6489 (struct smb2_buffer_desc_v1 *)
6490 ((char *)req + ch_offset),
6492 req->WriteChannelInfoLength);
6497 if (!test_tree_conn_flag(work->tcon, KSMBD_TREE_CONN_FLAG_WRITABLE)) {
6498 ksmbd_debug(SMB, "User does not have write permission\n");
6503 fp = ksmbd_lookup_fd_slow(work, req->VolatileFileId, req->PersistentFileId);
6509 if (!(fp->daccess & (FILE_WRITE_DATA_LE | FILE_READ_ATTRIBUTES_LE))) {
6510 pr_err("Not permitted to write : 0x%x\n", fp->daccess);
6515 if (length > max_write_size) {
6516 ksmbd_debug(SMB, "limiting write size to max size(%u)\n",
6522 ksmbd_debug(SMB, "flags %u\n", le32_to_cpu(req->Flags));
6523 if (le32_to_cpu(req->Flags) & SMB2_WRITEFLAG_WRITE_THROUGH)
6524 writethrough = true;
6526 if (is_rdma_channel == false) {
6527 if (le16_to_cpu(req->DataOffset) <
6528 offsetof(struct smb2_write_req, Buffer)) {
6533 data_buf = (char *)(((char *)&req->hdr.ProtocolId) +
6534 le16_to_cpu(req->DataOffset));
6536 ksmbd_debug(SMB, "filename %pD, offset %lld, len %zu\n",
6537 fp->filp, offset, length);
6538 err = ksmbd_vfs_write(work, fp, data_buf, length, &offset,
6539 writethrough, &nbytes);
6543 /* read data from the client using rdma channel, and
6546 nbytes = smb2_write_rdma_channel(work, req, fp, offset, length,
6554 rsp->StructureSize = cpu_to_le16(17);
6555 rsp->DataOffset = 0;
6557 rsp->DataLength = cpu_to_le32(nbytes);
6558 rsp->DataRemaining = 0;
6560 inc_rfc1001_len(work->response_buf, 16);
6561 ksmbd_fd_put(work, fp);
6566 rsp->hdr.Status = STATUS_FILE_LOCK_CONFLICT;
6567 else if (err == -ENOSPC || err == -EFBIG)
6568 rsp->hdr.Status = STATUS_DISK_FULL;
6569 else if (err == -ENOENT)
6570 rsp->hdr.Status = STATUS_FILE_CLOSED;
6571 else if (err == -EACCES)
6572 rsp->hdr.Status = STATUS_ACCESS_DENIED;
6573 else if (err == -ESHARE)
6574 rsp->hdr.Status = STATUS_SHARING_VIOLATION;
6575 else if (err == -EINVAL)
6576 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
6578 rsp->hdr.Status = STATUS_INVALID_HANDLE;
6580 smb2_set_err_rsp(work);
6581 ksmbd_fd_put(work, fp);
6586 * smb2_flush() - handler for smb2 flush file - fsync
6587 * @work: smb work containing flush command buffer
6589 * Return: 0 on success, otherwise error
6591 int smb2_flush(struct ksmbd_work *work)
6593 struct smb2_flush_req *req;
6594 struct smb2_flush_rsp *rsp;
6597 WORK_BUFFERS(work, req, rsp);
6599 ksmbd_debug(SMB, "SMB2_FLUSH called for fid %llu\n", req->VolatileFileId);
6601 err = ksmbd_vfs_fsync(work, req->VolatileFileId, req->PersistentFileId);
6605 rsp->StructureSize = cpu_to_le16(4);
6607 inc_rfc1001_len(work->response_buf, 4);
6612 rsp->hdr.Status = STATUS_INVALID_HANDLE;
6613 smb2_set_err_rsp(work);
6620 * smb2_cancel() - handler for smb2 cancel command
6621 * @work: smb work containing cancel command buffer
6623 * Return: 0 on success, otherwise error
6625 int smb2_cancel(struct ksmbd_work *work)
6627 struct ksmbd_conn *conn = work->conn;
6628 struct smb2_hdr *hdr = smb2_get_msg(work->request_buf);
6629 struct smb2_hdr *chdr;
6630 struct ksmbd_work *cancel_work = NULL, *iter;
6631 struct list_head *command_list;
6633 ksmbd_debug(SMB, "smb2 cancel called on mid %llu, async flags 0x%x\n",
6634 hdr->MessageId, hdr->Flags);
6636 if (hdr->Flags & SMB2_FLAGS_ASYNC_COMMAND) {
6637 command_list = &conn->async_requests;
6639 spin_lock(&conn->request_lock);
6640 list_for_each_entry(iter, command_list,
6641 async_request_entry) {
6642 chdr = smb2_get_msg(iter->request_buf);
6644 if (iter->async_id !=
6645 le64_to_cpu(hdr->Id.AsyncId))
6649 "smb2 with AsyncId %llu cancelled command = 0x%x\n",
6650 le64_to_cpu(hdr->Id.AsyncId),
6651 le16_to_cpu(chdr->Command));
6655 spin_unlock(&conn->request_lock);
6657 command_list = &conn->requests;
6659 spin_lock(&conn->request_lock);
6660 list_for_each_entry(iter, command_list, request_entry) {
6661 chdr = smb2_get_msg(iter->request_buf);
6663 if (chdr->MessageId != hdr->MessageId ||
6668 "smb2 with mid %llu cancelled command = 0x%x\n",
6669 le64_to_cpu(hdr->MessageId),
6670 le16_to_cpu(chdr->Command));
6674 spin_unlock(&conn->request_lock);
6678 cancel_work->state = KSMBD_WORK_CANCELLED;
6679 if (cancel_work->cancel_fn)
6680 cancel_work->cancel_fn(cancel_work->cancel_argv);
6683 /* For SMB2_CANCEL command itself send no response*/
6684 work->send_no_response = 1;
6688 struct file_lock *smb_flock_init(struct file *f)
6690 struct file_lock *fl;
6692 fl = locks_alloc_lock();
6696 locks_init_lock(fl);
6699 fl->fl_pid = current->tgid;
6701 fl->fl_flags = FL_POSIX;
6703 fl->fl_lmops = NULL;
6709 static int smb2_set_flock_flags(struct file_lock *flock, int flags)
6713 /* Checking for wrong flag combination during lock request*/
6715 case SMB2_LOCKFLAG_SHARED:
6716 ksmbd_debug(SMB, "received shared request\n");
6718 flock->fl_type = F_RDLCK;
6719 flock->fl_flags |= FL_SLEEP;
6721 case SMB2_LOCKFLAG_EXCLUSIVE:
6722 ksmbd_debug(SMB, "received exclusive request\n");
6724 flock->fl_type = F_WRLCK;
6725 flock->fl_flags |= FL_SLEEP;
6727 case SMB2_LOCKFLAG_SHARED | SMB2_LOCKFLAG_FAIL_IMMEDIATELY:
6729 "received shared & fail immediately request\n");
6731 flock->fl_type = F_RDLCK;
6733 case SMB2_LOCKFLAG_EXCLUSIVE | SMB2_LOCKFLAG_FAIL_IMMEDIATELY:
6735 "received exclusive & fail immediately request\n");
6737 flock->fl_type = F_WRLCK;
6739 case SMB2_LOCKFLAG_UNLOCK:
6740 ksmbd_debug(SMB, "received unlock request\n");
6741 flock->fl_type = F_UNLCK;
6749 static struct ksmbd_lock *smb2_lock_init(struct file_lock *flock,
6750 unsigned int cmd, int flags,
6751 struct list_head *lock_list)
6753 struct ksmbd_lock *lock;
6755 lock = kzalloc(sizeof(struct ksmbd_lock), GFP_KERNEL);
6761 lock->start = flock->fl_start;
6762 lock->end = flock->fl_end;
6763 lock->flags = flags;
6764 if (lock->start == lock->end)
6766 INIT_LIST_HEAD(&lock->clist);
6767 INIT_LIST_HEAD(&lock->flist);
6768 INIT_LIST_HEAD(&lock->llist);
6769 list_add_tail(&lock->llist, lock_list);
6774 static void smb2_remove_blocked_lock(void **argv)
6776 struct file_lock *flock = (struct file_lock *)argv[0];
6778 ksmbd_vfs_posix_lock_unblock(flock);
6779 wake_up(&flock->fl_wait);
6782 static inline bool lock_defer_pending(struct file_lock *fl)
6784 /* check pending lock waiters */
6785 return waitqueue_active(&fl->fl_wait);
6789 * smb2_lock() - handler for smb2 file lock command
6790 * @work: smb work containing lock command buffer
6792 * Return: 0 on success, otherwise error
6794 int smb2_lock(struct ksmbd_work *work)
6796 struct smb2_lock_req *req = smb2_get_msg(work->request_buf);
6797 struct smb2_lock_rsp *rsp = smb2_get_msg(work->response_buf);
6798 struct smb2_lock_element *lock_ele;
6799 struct ksmbd_file *fp = NULL;
6800 struct file_lock *flock = NULL;
6801 struct file *filp = NULL;
6805 int err = -EIO, i, rc = 0;
6806 u64 lock_start, lock_length;
6807 struct ksmbd_lock *smb_lock = NULL, *cmp_lock, *tmp, *tmp2;
6808 struct ksmbd_conn *conn;
6810 LIST_HEAD(lock_list);
6811 LIST_HEAD(rollback_list);
6814 ksmbd_debug(SMB, "Received lock request\n");
6815 fp = ksmbd_lookup_fd_slow(work, req->VolatileFileId, req->PersistentFileId);
6817 ksmbd_debug(SMB, "Invalid file id for lock : %llu\n", req->VolatileFileId);
6823 lock_count = le16_to_cpu(req->LockCount);
6824 lock_ele = req->locks;
6826 ksmbd_debug(SMB, "lock count is %d\n", lock_count);
6832 for (i = 0; i < lock_count; i++) {
6833 flags = le32_to_cpu(lock_ele[i].Flags);
6835 flock = smb_flock_init(filp);
6839 cmd = smb2_set_flock_flags(flock, flags);
6841 lock_start = le64_to_cpu(lock_ele[i].Offset);
6842 lock_length = le64_to_cpu(lock_ele[i].Length);
6843 if (lock_start > U64_MAX - lock_length) {
6844 pr_err("Invalid lock range requested\n");
6845 rsp->hdr.Status = STATUS_INVALID_LOCK_RANGE;
6849 if (lock_start > OFFSET_MAX)
6850 flock->fl_start = OFFSET_MAX;
6852 flock->fl_start = lock_start;
6854 lock_length = le64_to_cpu(lock_ele[i].Length);
6855 if (lock_length > OFFSET_MAX - flock->fl_start)
6856 lock_length = OFFSET_MAX - flock->fl_start;
6858 flock->fl_end = flock->fl_start + lock_length;
6860 if (flock->fl_end < flock->fl_start) {
6862 "the end offset(%llx) is smaller than the start offset(%llx)\n",
6863 flock->fl_end, flock->fl_start);
6864 rsp->hdr.Status = STATUS_INVALID_LOCK_RANGE;
6868 /* Check conflict locks in one request */
6869 list_for_each_entry(cmp_lock, &lock_list, llist) {
6870 if (cmp_lock->fl->fl_start <= flock->fl_start &&
6871 cmp_lock->fl->fl_end >= flock->fl_end) {
6872 if (cmp_lock->fl->fl_type != F_UNLCK &&
6873 flock->fl_type != F_UNLCK) {
6874 pr_err("conflict two locks in one request\n");
6881 smb_lock = smb2_lock_init(flock, cmd, flags, &lock_list);
6888 list_for_each_entry_safe(smb_lock, tmp, &lock_list, llist) {
6889 if (smb_lock->cmd < 0) {
6894 if (!(smb_lock->flags & SMB2_LOCKFLAG_MASK)) {
6899 if ((prior_lock & (SMB2_LOCKFLAG_EXCLUSIVE | SMB2_LOCKFLAG_SHARED) &&
6900 smb_lock->flags & SMB2_LOCKFLAG_UNLOCK) ||
6901 (prior_lock == SMB2_LOCKFLAG_UNLOCK &&
6902 !(smb_lock->flags & SMB2_LOCKFLAG_UNLOCK))) {
6907 prior_lock = smb_lock->flags;
6909 if (!(smb_lock->flags & SMB2_LOCKFLAG_UNLOCK) &&
6910 !(smb_lock->flags & SMB2_LOCKFLAG_FAIL_IMMEDIATELY))
6914 /* check locks in connection list */
6915 read_lock(&conn_list_lock);
6916 list_for_each_entry(conn, &conn_list, conns_list) {
6917 spin_lock(&conn->llist_lock);
6918 list_for_each_entry_safe(cmp_lock, tmp2, &conn->lock_list, clist) {
6919 if (file_inode(cmp_lock->fl->fl_file) !=
6920 file_inode(smb_lock->fl->fl_file))
6923 if (smb_lock->fl->fl_type == F_UNLCK) {
6924 if (cmp_lock->fl->fl_file == smb_lock->fl->fl_file &&
6925 cmp_lock->start == smb_lock->start &&
6926 cmp_lock->end == smb_lock->end &&
6927 !lock_defer_pending(cmp_lock->fl)) {
6929 list_del(&cmp_lock->flist);
6930 list_del(&cmp_lock->clist);
6931 spin_unlock(&conn->llist_lock);
6932 read_unlock(&conn_list_lock);
6934 locks_free_lock(cmp_lock->fl);
6941 if (cmp_lock->fl->fl_file == smb_lock->fl->fl_file) {
6942 if (smb_lock->flags & SMB2_LOCKFLAG_SHARED)
6945 if (cmp_lock->flags & SMB2_LOCKFLAG_SHARED)
6949 /* check zero byte lock range */
6950 if (cmp_lock->zero_len && !smb_lock->zero_len &&
6951 cmp_lock->start > smb_lock->start &&
6952 cmp_lock->start < smb_lock->end) {
6953 spin_unlock(&conn->llist_lock);
6954 read_unlock(&conn_list_lock);
6955 pr_err("previous lock conflict with zero byte lock range\n");
6959 if (smb_lock->zero_len && !cmp_lock->zero_len &&
6960 smb_lock->start > cmp_lock->start &&
6961 smb_lock->start < cmp_lock->end) {
6962 spin_unlock(&conn->llist_lock);
6963 read_unlock(&conn_list_lock);
6964 pr_err("current lock conflict with zero byte lock range\n");
6968 if (((cmp_lock->start <= smb_lock->start &&
6969 cmp_lock->end > smb_lock->start) ||
6970 (cmp_lock->start < smb_lock->end &&
6971 cmp_lock->end >= smb_lock->end)) &&
6972 !cmp_lock->zero_len && !smb_lock->zero_len) {
6973 spin_unlock(&conn->llist_lock);
6974 read_unlock(&conn_list_lock);
6975 pr_err("Not allow lock operation on exclusive lock range\n");
6979 spin_unlock(&conn->llist_lock);
6981 read_unlock(&conn_list_lock);
6983 if (smb_lock->fl->fl_type == F_UNLCK && nolock) {
6984 pr_err("Try to unlock nolocked range\n");
6985 rsp->hdr.Status = STATUS_RANGE_NOT_LOCKED;
6990 if (smb_lock->zero_len) {
6995 flock = smb_lock->fl;
6996 list_del(&smb_lock->llist);
6998 rc = vfs_lock_file(filp, smb_lock->cmd, flock, NULL);
7000 if (flags & SMB2_LOCKFLAG_UNLOCK) {
7002 ksmbd_debug(SMB, "File unlocked\n");
7003 } else if (rc == -ENOENT) {
7004 rsp->hdr.Status = STATUS_NOT_LOCKED;
7007 locks_free_lock(flock);
7010 if (rc == FILE_LOCK_DEFERRED) {
7014 "would have to wait for getting lock\n");
7015 spin_lock(&work->conn->llist_lock);
7016 list_add_tail(&smb_lock->clist,
7017 &work->conn->lock_list);
7018 spin_unlock(&work->conn->llist_lock);
7019 list_add(&smb_lock->llist, &rollback_list);
7021 argv = kmalloc(sizeof(void *), GFP_KERNEL);
7028 rc = setup_async_work(work,
7029 smb2_remove_blocked_lock,
7035 spin_lock(&fp->f_lock);
7036 list_add(&work->fp_entry, &fp->blocked_works);
7037 spin_unlock(&fp->f_lock);
7039 smb2_send_interim_resp(work, STATUS_PENDING);
7041 ksmbd_vfs_posix_lock_wait(flock);
7043 if (work->state != KSMBD_WORK_ACTIVE) {
7044 list_del(&smb_lock->llist);
7045 spin_lock(&work->conn->llist_lock);
7046 list_del(&smb_lock->clist);
7047 spin_unlock(&work->conn->llist_lock);
7048 locks_free_lock(flock);
7050 if (work->state == KSMBD_WORK_CANCELLED) {
7051 spin_lock(&fp->f_lock);
7052 list_del(&work->fp_entry);
7053 spin_unlock(&fp->f_lock);
7057 smb2_send_interim_resp(work,
7059 work->send_no_response = 1;
7062 init_smb2_rsp_hdr(work);
7063 smb2_set_err_rsp(work);
7065 STATUS_RANGE_NOT_LOCKED;
7070 list_del(&smb_lock->llist);
7071 spin_lock(&work->conn->llist_lock);
7072 list_del(&smb_lock->clist);
7073 spin_unlock(&work->conn->llist_lock);
7075 spin_lock(&fp->f_lock);
7076 list_del(&work->fp_entry);
7077 spin_unlock(&fp->f_lock);
7080 spin_lock(&work->conn->llist_lock);
7081 list_add_tail(&smb_lock->clist,
7082 &work->conn->lock_list);
7083 list_add_tail(&smb_lock->flist,
7085 spin_unlock(&work->conn->llist_lock);
7086 list_add(&smb_lock->llist, &rollback_list);
7087 ksmbd_debug(SMB, "successful in taking lock\n");
7094 if (atomic_read(&fp->f_ci->op_count) > 1)
7095 smb_break_all_oplock(work, fp);
7097 rsp->StructureSize = cpu_to_le16(4);
7098 ksmbd_debug(SMB, "successful in taking lock\n");
7099 rsp->hdr.Status = STATUS_SUCCESS;
7101 inc_rfc1001_len(work->response_buf, 4);
7102 ksmbd_fd_put(work, fp);
7106 list_for_each_entry_safe(smb_lock, tmp, &lock_list, llist) {
7107 locks_free_lock(smb_lock->fl);
7108 list_del(&smb_lock->llist);
7112 list_for_each_entry_safe(smb_lock, tmp, &rollback_list, llist) {
7113 struct file_lock *rlock = NULL;
7115 rlock = smb_flock_init(filp);
7116 rlock->fl_type = F_UNLCK;
7117 rlock->fl_start = smb_lock->start;
7118 rlock->fl_end = smb_lock->end;
7120 rc = vfs_lock_file(filp, 0, rlock, NULL);
7122 pr_err("rollback unlock fail : %d\n", rc);
7124 list_del(&smb_lock->llist);
7125 spin_lock(&work->conn->llist_lock);
7126 if (!list_empty(&smb_lock->flist))
7127 list_del(&smb_lock->flist);
7128 list_del(&smb_lock->clist);
7129 spin_unlock(&work->conn->llist_lock);
7131 locks_free_lock(smb_lock->fl);
7132 locks_free_lock(rlock);
7136 ksmbd_debug(SMB, "failed in taking lock(flags : %x), err : %d\n", flags, err);
7138 if (!rsp->hdr.Status) {
7140 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
7141 else if (err == -ENOMEM)
7142 rsp->hdr.Status = STATUS_INSUFFICIENT_RESOURCES;
7143 else if (err == -ENOENT)
7144 rsp->hdr.Status = STATUS_FILE_CLOSED;
7146 rsp->hdr.Status = STATUS_LOCK_NOT_GRANTED;
7149 smb2_set_err_rsp(work);
7150 ksmbd_fd_put(work, fp);
7154 static int fsctl_copychunk(struct ksmbd_work *work,
7155 struct copychunk_ioctl_req *ci_req,
7156 unsigned int cnt_code,
7157 unsigned int input_count,
7158 unsigned long long volatile_id,
7159 unsigned long long persistent_id,
7160 struct smb2_ioctl_rsp *rsp)
7162 struct copychunk_ioctl_rsp *ci_rsp;
7163 struct ksmbd_file *src_fp = NULL, *dst_fp = NULL;
7164 struct srv_copychunk *chunks;
7165 unsigned int i, chunk_count, chunk_count_written = 0;
7166 unsigned int chunk_size_written = 0;
7167 loff_t total_size_written = 0;
7170 ci_rsp = (struct copychunk_ioctl_rsp *)&rsp->Buffer[0];
7172 rsp->VolatileFileId = volatile_id;
7173 rsp->PersistentFileId = persistent_id;
7174 ci_rsp->ChunksWritten =
7175 cpu_to_le32(ksmbd_server_side_copy_max_chunk_count());
7176 ci_rsp->ChunkBytesWritten =
7177 cpu_to_le32(ksmbd_server_side_copy_max_chunk_size());
7178 ci_rsp->TotalBytesWritten =
7179 cpu_to_le32(ksmbd_server_side_copy_max_total_size());
7181 chunks = (struct srv_copychunk *)&ci_req->Chunks[0];
7182 chunk_count = le32_to_cpu(ci_req->ChunkCount);
7183 if (chunk_count == 0)
7185 total_size_written = 0;
7187 /* verify the SRV_COPYCHUNK_COPY packet */
7188 if (chunk_count > ksmbd_server_side_copy_max_chunk_count() ||
7189 input_count < offsetof(struct copychunk_ioctl_req, Chunks) +
7190 chunk_count * sizeof(struct srv_copychunk)) {
7191 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
7195 for (i = 0; i < chunk_count; i++) {
7196 if (le32_to_cpu(chunks[i].Length) == 0 ||
7197 le32_to_cpu(chunks[i].Length) > ksmbd_server_side_copy_max_chunk_size())
7199 total_size_written += le32_to_cpu(chunks[i].Length);
7202 if (i < chunk_count ||
7203 total_size_written > ksmbd_server_side_copy_max_total_size()) {
7204 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
7208 src_fp = ksmbd_lookup_foreign_fd(work,
7209 le64_to_cpu(ci_req->ResumeKey[0]));
7210 dst_fp = ksmbd_lookup_fd_slow(work, volatile_id, persistent_id);
7213 src_fp->persistent_id != le64_to_cpu(ci_req->ResumeKey[1])) {
7214 rsp->hdr.Status = STATUS_OBJECT_NAME_NOT_FOUND;
7219 rsp->hdr.Status = STATUS_FILE_CLOSED;
7224 * FILE_READ_DATA should only be included in
7225 * the FSCTL_COPYCHUNK case
7227 if (cnt_code == FSCTL_COPYCHUNK &&
7228 !(dst_fp->daccess & (FILE_READ_DATA_LE | FILE_GENERIC_READ_LE))) {
7229 rsp->hdr.Status = STATUS_ACCESS_DENIED;
7233 ret = ksmbd_vfs_copy_file_ranges(work, src_fp, dst_fp,
7234 chunks, chunk_count,
7235 &chunk_count_written,
7236 &chunk_size_written,
7237 &total_size_written);
7240 rsp->hdr.Status = STATUS_ACCESS_DENIED;
7242 rsp->hdr.Status = STATUS_FILE_LOCK_CONFLICT;
7243 else if (ret == -EBADF)
7244 rsp->hdr.Status = STATUS_INVALID_HANDLE;
7245 else if (ret == -EFBIG || ret == -ENOSPC)
7246 rsp->hdr.Status = STATUS_DISK_FULL;
7247 else if (ret == -EINVAL)
7248 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
7249 else if (ret == -EISDIR)
7250 rsp->hdr.Status = STATUS_FILE_IS_A_DIRECTORY;
7251 else if (ret == -E2BIG)
7252 rsp->hdr.Status = STATUS_INVALID_VIEW_SIZE;
7254 rsp->hdr.Status = STATUS_UNEXPECTED_IO_ERROR;
7257 ci_rsp->ChunksWritten = cpu_to_le32(chunk_count_written);
7258 ci_rsp->ChunkBytesWritten = cpu_to_le32(chunk_size_written);
7259 ci_rsp->TotalBytesWritten = cpu_to_le32(total_size_written);
7261 ksmbd_fd_put(work, src_fp);
7262 ksmbd_fd_put(work, dst_fp);
7266 static __be32 idev_ipv4_address(struct in_device *idev)
7270 struct in_ifaddr *ifa;
7273 in_dev_for_each_ifa_rcu(ifa, idev) {
7274 if (ifa->ifa_flags & IFA_F_SECONDARY)
7277 addr = ifa->ifa_address;
7284 static int fsctl_query_iface_info_ioctl(struct ksmbd_conn *conn,
7285 struct smb2_ioctl_rsp *rsp,
7286 unsigned int out_buf_len)
7288 struct network_interface_info_ioctl_rsp *nii_rsp = NULL;
7290 struct net_device *netdev;
7291 struct sockaddr_storage_rsp *sockaddr_storage;
7293 unsigned long long speed;
7296 for_each_netdev(&init_net, netdev) {
7297 bool ipv4_set = false;
7299 if (netdev->type == ARPHRD_LOOPBACK)
7302 flags = dev_get_flags(netdev);
7303 if (!(flags & IFF_RUNNING))
7307 nbytes + sizeof(struct network_interface_info_ioctl_rsp)) {
7312 nii_rsp = (struct network_interface_info_ioctl_rsp *)
7313 &rsp->Buffer[nbytes];
7314 nii_rsp->IfIndex = cpu_to_le32(netdev->ifindex);
7316 nii_rsp->Capability = 0;
7317 if (netdev->real_num_tx_queues > 1)
7318 nii_rsp->Capability |= cpu_to_le32(RSS_CAPABLE);
7319 if (ksmbd_rdma_capable_netdev(netdev))
7320 nii_rsp->Capability |= cpu_to_le32(RDMA_CAPABLE);
7322 nii_rsp->Next = cpu_to_le32(152);
7323 nii_rsp->Reserved = 0;
7325 if (netdev->ethtool_ops->get_link_ksettings) {
7326 struct ethtool_link_ksettings cmd;
7328 netdev->ethtool_ops->get_link_ksettings(netdev, &cmd);
7329 speed = cmd.base.speed;
7331 ksmbd_debug(SMB, "%s %s\n", netdev->name,
7332 "speed is unknown, defaulting to 1Gb/sec");
7337 nii_rsp->LinkSpeed = cpu_to_le64(speed);
7339 sockaddr_storage = (struct sockaddr_storage_rsp *)
7340 nii_rsp->SockAddr_Storage;
7341 memset(sockaddr_storage, 0, 128);
7344 struct in_device *idev;
7346 sockaddr_storage->Family = cpu_to_le16(INTERNETWORK);
7347 sockaddr_storage->addr4.Port = 0;
7349 idev = __in_dev_get_rtnl(netdev);
7352 sockaddr_storage->addr4.IPv4address =
7353 idev_ipv4_address(idev);
7354 nbytes += sizeof(struct network_interface_info_ioctl_rsp);
7358 struct inet6_dev *idev6;
7359 struct inet6_ifaddr *ifa;
7360 __u8 *ipv6_addr = sockaddr_storage->addr6.IPv6address;
7362 sockaddr_storage->Family = cpu_to_le16(INTERNETWORKV6);
7363 sockaddr_storage->addr6.Port = 0;
7364 sockaddr_storage->addr6.FlowInfo = 0;
7366 idev6 = __in6_dev_get(netdev);
7370 list_for_each_entry(ifa, &idev6->addr_list, if_list) {
7371 if (ifa->flags & (IFA_F_TENTATIVE |
7374 memcpy(ipv6_addr, ifa->addr.s6_addr, 16);
7377 sockaddr_storage->addr6.ScopeId = 0;
7378 nbytes += sizeof(struct network_interface_info_ioctl_rsp);
7383 /* zero if this is last one */
7387 rsp->PersistentFileId = SMB2_NO_FID;
7388 rsp->VolatileFileId = SMB2_NO_FID;
7392 static int fsctl_validate_negotiate_info(struct ksmbd_conn *conn,
7393 struct validate_negotiate_info_req *neg_req,
7394 struct validate_negotiate_info_rsp *neg_rsp,
7395 unsigned int in_buf_len)
7400 if (in_buf_len < offsetof(struct validate_negotiate_info_req, Dialects) +
7401 le16_to_cpu(neg_req->DialectCount) * sizeof(__le16))
7404 dialect = ksmbd_lookup_dialect_by_id(neg_req->Dialects,
7405 neg_req->DialectCount);
7406 if (dialect == BAD_PROT_ID || dialect != conn->dialect) {
7411 if (strncmp(neg_req->Guid, conn->ClientGUID, SMB2_CLIENT_GUID_SIZE)) {
7416 if (le16_to_cpu(neg_req->SecurityMode) != conn->cli_sec_mode) {
7421 if (le32_to_cpu(neg_req->Capabilities) != conn->cli_cap) {
7426 neg_rsp->Capabilities = cpu_to_le32(conn->vals->capabilities);
7427 memset(neg_rsp->Guid, 0, SMB2_CLIENT_GUID_SIZE);
7428 neg_rsp->SecurityMode = cpu_to_le16(conn->srv_sec_mode);
7429 neg_rsp->Dialect = cpu_to_le16(conn->dialect);
7434 static int fsctl_query_allocated_ranges(struct ksmbd_work *work, u64 id,
7435 struct file_allocated_range_buffer *qar_req,
7436 struct file_allocated_range_buffer *qar_rsp,
7437 unsigned int in_count, unsigned int *out_count)
7439 struct ksmbd_file *fp;
7440 loff_t start, length;
7447 fp = ksmbd_lookup_fd_fast(work, id);
7451 start = le64_to_cpu(qar_req->file_offset);
7452 length = le64_to_cpu(qar_req->length);
7454 ret = ksmbd_vfs_fqar_lseek(fp, start, length,
7455 qar_rsp, in_count, out_count);
7456 if (ret && ret != -E2BIG)
7459 ksmbd_fd_put(work, fp);
7463 static int fsctl_pipe_transceive(struct ksmbd_work *work, u64 id,
7464 unsigned int out_buf_len,
7465 struct smb2_ioctl_req *req,
7466 struct smb2_ioctl_rsp *rsp)
7468 struct ksmbd_rpc_command *rpc_resp;
7469 char *data_buf = (char *)&req->Buffer[0];
7472 rpc_resp = ksmbd_rpc_ioctl(work->sess, id, data_buf,
7473 le32_to_cpu(req->InputCount));
7475 if (rpc_resp->flags == KSMBD_RPC_SOME_NOT_MAPPED) {
7477 * set STATUS_SOME_NOT_MAPPED response
7478 * for unknown domain sid.
7480 rsp->hdr.Status = STATUS_SOME_NOT_MAPPED;
7481 } else if (rpc_resp->flags == KSMBD_RPC_ENOTIMPLEMENTED) {
7482 rsp->hdr.Status = STATUS_NOT_SUPPORTED;
7484 } else if (rpc_resp->flags != KSMBD_RPC_OK) {
7485 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
7489 nbytes = rpc_resp->payload_sz;
7490 if (rpc_resp->payload_sz > out_buf_len) {
7491 rsp->hdr.Status = STATUS_BUFFER_OVERFLOW;
7492 nbytes = out_buf_len;
7495 if (!rpc_resp->payload_sz) {
7497 STATUS_UNEXPECTED_IO_ERROR;
7501 memcpy((char *)rsp->Buffer, rpc_resp->payload, nbytes);
7508 static inline int fsctl_set_sparse(struct ksmbd_work *work, u64 id,
7509 struct file_sparse *sparse)
7511 struct ksmbd_file *fp;
7512 struct user_namespace *user_ns;
7516 fp = ksmbd_lookup_fd_fast(work, id);
7519 user_ns = file_mnt_user_ns(fp->filp);
7521 old_fattr = fp->f_ci->m_fattr;
7522 if (sparse->SetSparse)
7523 fp->f_ci->m_fattr |= FILE_ATTRIBUTE_SPARSE_FILE_LE;
7525 fp->f_ci->m_fattr &= ~FILE_ATTRIBUTE_SPARSE_FILE_LE;
7527 if (fp->f_ci->m_fattr != old_fattr &&
7528 test_share_config_flag(work->tcon->share_conf,
7529 KSMBD_SHARE_FLAG_STORE_DOS_ATTRS)) {
7530 struct xattr_dos_attrib da;
7532 ret = ksmbd_vfs_get_dos_attrib_xattr(user_ns,
7533 fp->filp->f_path.dentry, &da);
7537 da.attr = le32_to_cpu(fp->f_ci->m_fattr);
7538 ret = ksmbd_vfs_set_dos_attrib_xattr(user_ns,
7539 fp->filp->f_path.dentry, &da);
7541 fp->f_ci->m_fattr = old_fattr;
7545 ksmbd_fd_put(work, fp);
7549 static int fsctl_request_resume_key(struct ksmbd_work *work,
7550 struct smb2_ioctl_req *req,
7551 struct resume_key_ioctl_rsp *key_rsp)
7553 struct ksmbd_file *fp;
7555 fp = ksmbd_lookup_fd_slow(work, req->VolatileFileId, req->PersistentFileId);
7559 memset(key_rsp, 0, sizeof(*key_rsp));
7560 key_rsp->ResumeKey[0] = req->VolatileFileId;
7561 key_rsp->ResumeKey[1] = req->PersistentFileId;
7562 ksmbd_fd_put(work, fp);
7568 * smb2_ioctl() - handler for smb2 ioctl command
7569 * @work: smb work containing ioctl command buffer
7571 * Return: 0 on success, otherwise error
7573 int smb2_ioctl(struct ksmbd_work *work)
7575 struct smb2_ioctl_req *req;
7576 struct smb2_ioctl_rsp *rsp;
7577 unsigned int cnt_code, nbytes = 0, out_buf_len, in_buf_len;
7578 u64 id = KSMBD_NO_FID;
7579 struct ksmbd_conn *conn = work->conn;
7582 if (work->next_smb2_rcv_hdr_off) {
7583 req = ksmbd_req_buf_next(work);
7584 rsp = ksmbd_resp_buf_next(work);
7585 if (!has_file_id(req->VolatileFileId)) {
7586 ksmbd_debug(SMB, "Compound request set FID = %llu\n",
7587 work->compound_fid);
7588 id = work->compound_fid;
7591 req = smb2_get_msg(work->request_buf);
7592 rsp = smb2_get_msg(work->response_buf);
7595 if (!has_file_id(id))
7596 id = req->VolatileFileId;
7598 if (req->Flags != cpu_to_le32(SMB2_0_IOCTL_IS_FSCTL)) {
7599 rsp->hdr.Status = STATUS_NOT_SUPPORTED;
7603 cnt_code = le32_to_cpu(req->CtlCode);
7604 ret = smb2_calc_max_out_buf_len(work, 48,
7605 le32_to_cpu(req->MaxOutputResponse));
7607 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
7610 out_buf_len = (unsigned int)ret;
7611 in_buf_len = le32_to_cpu(req->InputCount);
7614 case FSCTL_DFS_GET_REFERRALS:
7615 case FSCTL_DFS_GET_REFERRALS_EX:
7616 /* Not support DFS yet */
7617 rsp->hdr.Status = STATUS_FS_DRIVER_REQUIRED;
7619 case FSCTL_CREATE_OR_GET_OBJECT_ID:
7621 struct file_object_buf_type1_ioctl_rsp *obj_buf;
7623 nbytes = sizeof(struct file_object_buf_type1_ioctl_rsp);
7624 obj_buf = (struct file_object_buf_type1_ioctl_rsp *)
7628 * TODO: This is dummy implementation to pass smbtorture
7629 * Need to check correct response later
7631 memset(obj_buf->ObjectId, 0x0, 16);
7632 memset(obj_buf->BirthVolumeId, 0x0, 16);
7633 memset(obj_buf->BirthObjectId, 0x0, 16);
7634 memset(obj_buf->DomainId, 0x0, 16);
7638 case FSCTL_PIPE_TRANSCEIVE:
7639 out_buf_len = min_t(u32, KSMBD_IPC_MAX_PAYLOAD, out_buf_len);
7640 nbytes = fsctl_pipe_transceive(work, id, out_buf_len, req, rsp);
7642 case FSCTL_VALIDATE_NEGOTIATE_INFO:
7643 if (conn->dialect < SMB30_PROT_ID) {
7648 if (in_buf_len < sizeof(struct validate_negotiate_info_req))
7651 if (out_buf_len < sizeof(struct validate_negotiate_info_rsp))
7654 ret = fsctl_validate_negotiate_info(conn,
7655 (struct validate_negotiate_info_req *)&req->Buffer[0],
7656 (struct validate_negotiate_info_rsp *)&rsp->Buffer[0],
7661 nbytes = sizeof(struct validate_negotiate_info_rsp);
7662 rsp->PersistentFileId = SMB2_NO_FID;
7663 rsp->VolatileFileId = SMB2_NO_FID;
7665 case FSCTL_QUERY_NETWORK_INTERFACE_INFO:
7666 ret = fsctl_query_iface_info_ioctl(conn, rsp, out_buf_len);
7671 case FSCTL_REQUEST_RESUME_KEY:
7672 if (out_buf_len < sizeof(struct resume_key_ioctl_rsp)) {
7677 ret = fsctl_request_resume_key(work, req,
7678 (struct resume_key_ioctl_rsp *)&rsp->Buffer[0]);
7681 rsp->PersistentFileId = req->PersistentFileId;
7682 rsp->VolatileFileId = req->VolatileFileId;
7683 nbytes = sizeof(struct resume_key_ioctl_rsp);
7685 case FSCTL_COPYCHUNK:
7686 case FSCTL_COPYCHUNK_WRITE:
7687 if (!test_tree_conn_flag(work->tcon, KSMBD_TREE_CONN_FLAG_WRITABLE)) {
7689 "User does not have write permission\n");
7694 if (in_buf_len < sizeof(struct copychunk_ioctl_req)) {
7699 if (out_buf_len < sizeof(struct copychunk_ioctl_rsp)) {
7704 nbytes = sizeof(struct copychunk_ioctl_rsp);
7705 rsp->VolatileFileId = req->VolatileFileId;
7706 rsp->PersistentFileId = req->PersistentFileId;
7707 fsctl_copychunk(work,
7708 (struct copychunk_ioctl_req *)&req->Buffer[0],
7709 le32_to_cpu(req->CtlCode),
7710 le32_to_cpu(req->InputCount),
7711 req->VolatileFileId,
7712 req->PersistentFileId,
7715 case FSCTL_SET_SPARSE:
7716 if (in_buf_len < sizeof(struct file_sparse)) {
7721 ret = fsctl_set_sparse(work, id,
7722 (struct file_sparse *)&req->Buffer[0]);
7726 case FSCTL_SET_ZERO_DATA:
7728 struct file_zero_data_information *zero_data;
7729 struct ksmbd_file *fp;
7730 loff_t off, len, bfz;
7732 if (!test_tree_conn_flag(work->tcon, KSMBD_TREE_CONN_FLAG_WRITABLE)) {
7734 "User does not have write permission\n");
7739 if (in_buf_len < sizeof(struct file_zero_data_information)) {
7745 (struct file_zero_data_information *)&req->Buffer[0];
7747 off = le64_to_cpu(zero_data->FileOffset);
7748 bfz = le64_to_cpu(zero_data->BeyondFinalZero);
7756 fp = ksmbd_lookup_fd_fast(work, id);
7762 ret = ksmbd_vfs_zero_data(work, fp, off, len);
7763 ksmbd_fd_put(work, fp);
7769 case FSCTL_QUERY_ALLOCATED_RANGES:
7770 if (in_buf_len < sizeof(struct file_allocated_range_buffer)) {
7775 ret = fsctl_query_allocated_ranges(work, id,
7776 (struct file_allocated_range_buffer *)&req->Buffer[0],
7777 (struct file_allocated_range_buffer *)&rsp->Buffer[0],
7779 sizeof(struct file_allocated_range_buffer), &nbytes);
7780 if (ret == -E2BIG) {
7781 rsp->hdr.Status = STATUS_BUFFER_OVERFLOW;
7782 } else if (ret < 0) {
7787 nbytes *= sizeof(struct file_allocated_range_buffer);
7789 case FSCTL_GET_REPARSE_POINT:
7791 struct reparse_data_buffer *reparse_ptr;
7792 struct ksmbd_file *fp;
7794 reparse_ptr = (struct reparse_data_buffer *)&rsp->Buffer[0];
7795 fp = ksmbd_lookup_fd_fast(work, id);
7797 pr_err("not found fp!!\n");
7802 reparse_ptr->ReparseTag =
7803 smb2_get_reparse_tag_special_file(file_inode(fp->filp)->i_mode);
7804 reparse_ptr->ReparseDataLength = 0;
7805 ksmbd_fd_put(work, fp);
7806 nbytes = sizeof(struct reparse_data_buffer);
7809 case FSCTL_DUPLICATE_EXTENTS_TO_FILE:
7811 struct ksmbd_file *fp_in, *fp_out = NULL;
7812 struct duplicate_extents_to_file *dup_ext;
7813 loff_t src_off, dst_off, length, cloned;
7815 if (in_buf_len < sizeof(struct duplicate_extents_to_file)) {
7820 dup_ext = (struct duplicate_extents_to_file *)&req->Buffer[0];
7822 fp_in = ksmbd_lookup_fd_slow(work, dup_ext->VolatileFileHandle,
7823 dup_ext->PersistentFileHandle);
7825 pr_err("not found file handle in duplicate extent to file\n");
7830 fp_out = ksmbd_lookup_fd_fast(work, id);
7832 pr_err("not found fp\n");
7837 src_off = le64_to_cpu(dup_ext->SourceFileOffset);
7838 dst_off = le64_to_cpu(dup_ext->TargetFileOffset);
7839 length = le64_to_cpu(dup_ext->ByteCount);
7841 * XXX: It is not clear if FSCTL_DUPLICATE_EXTENTS_TO_FILE
7842 * should fall back to vfs_copy_file_range(). This could be
7843 * beneficial when re-exporting nfs/smb mount, but note that
7844 * this can result in partial copy that returns an error status.
7845 * If/when FSCTL_DUPLICATE_EXTENTS_TO_FILE_EX is implemented,
7846 * fall back to vfs_copy_file_range(), should be avoided when
7847 * the flag DUPLICATE_EXTENTS_DATA_EX_SOURCE_ATOMIC is set.
7849 cloned = vfs_clone_file_range(fp_in->filp, src_off,
7850 fp_out->filp, dst_off, length, 0);
7851 if (cloned == -EXDEV || cloned == -EOPNOTSUPP) {
7854 } else if (cloned != length) {
7855 cloned = vfs_copy_file_range(fp_in->filp, src_off,
7856 fp_out->filp, dst_off,
7858 if (cloned != length) {
7867 ksmbd_fd_put(work, fp_in);
7868 ksmbd_fd_put(work, fp_out);
7874 ksmbd_debug(SMB, "not implemented yet ioctl command 0x%x\n",
7880 rsp->CtlCode = cpu_to_le32(cnt_code);
7881 rsp->InputCount = cpu_to_le32(0);
7882 rsp->InputOffset = cpu_to_le32(112);
7883 rsp->OutputOffset = cpu_to_le32(112);
7884 rsp->OutputCount = cpu_to_le32(nbytes);
7885 rsp->StructureSize = cpu_to_le16(49);
7886 rsp->Reserved = cpu_to_le16(0);
7887 rsp->Flags = cpu_to_le32(0);
7888 rsp->Reserved2 = cpu_to_le32(0);
7889 inc_rfc1001_len(work->response_buf, 48 + nbytes);
7895 rsp->hdr.Status = STATUS_ACCESS_DENIED;
7896 else if (ret == -ENOENT)
7897 rsp->hdr.Status = STATUS_OBJECT_NAME_NOT_FOUND;
7898 else if (ret == -EOPNOTSUPP)
7899 rsp->hdr.Status = STATUS_NOT_SUPPORTED;
7900 else if (ret == -ENOSPC)
7901 rsp->hdr.Status = STATUS_BUFFER_TOO_SMALL;
7902 else if (ret < 0 || rsp->hdr.Status == 0)
7903 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
7904 smb2_set_err_rsp(work);
7909 * smb20_oplock_break_ack() - handler for smb2.0 oplock break command
7910 * @work: smb work containing oplock break command buffer
7914 static void smb20_oplock_break_ack(struct ksmbd_work *work)
7916 struct smb2_oplock_break *req = smb2_get_msg(work->request_buf);
7917 struct smb2_oplock_break *rsp = smb2_get_msg(work->response_buf);
7918 struct ksmbd_file *fp;
7919 struct oplock_info *opinfo = NULL;
7922 u64 volatile_id, persistent_id;
7923 char req_oplevel = 0, rsp_oplevel = 0;
7924 unsigned int oplock_change_type;
7926 volatile_id = req->VolatileFid;
7927 persistent_id = req->PersistentFid;
7928 req_oplevel = req->OplockLevel;
7929 ksmbd_debug(OPLOCK, "v_id %llu, p_id %llu request oplock level %d\n",
7930 volatile_id, persistent_id, req_oplevel);
7932 fp = ksmbd_lookup_fd_slow(work, volatile_id, persistent_id);
7934 rsp->hdr.Status = STATUS_FILE_CLOSED;
7935 smb2_set_err_rsp(work);
7939 opinfo = opinfo_get(fp);
7941 pr_err("unexpected null oplock_info\n");
7942 rsp->hdr.Status = STATUS_INVALID_OPLOCK_PROTOCOL;
7943 smb2_set_err_rsp(work);
7944 ksmbd_fd_put(work, fp);
7948 if (opinfo->level == SMB2_OPLOCK_LEVEL_NONE) {
7949 rsp->hdr.Status = STATUS_INVALID_OPLOCK_PROTOCOL;
7953 if (opinfo->op_state == OPLOCK_STATE_NONE) {
7954 ksmbd_debug(SMB, "unexpected oplock state 0x%x\n", opinfo->op_state);
7955 rsp->hdr.Status = STATUS_UNSUCCESSFUL;
7959 if ((opinfo->level == SMB2_OPLOCK_LEVEL_EXCLUSIVE ||
7960 opinfo->level == SMB2_OPLOCK_LEVEL_BATCH) &&
7961 (req_oplevel != SMB2_OPLOCK_LEVEL_II &&
7962 req_oplevel != SMB2_OPLOCK_LEVEL_NONE)) {
7963 err = STATUS_INVALID_OPLOCK_PROTOCOL;
7964 oplock_change_type = OPLOCK_WRITE_TO_NONE;
7965 } else if (opinfo->level == SMB2_OPLOCK_LEVEL_II &&
7966 req_oplevel != SMB2_OPLOCK_LEVEL_NONE) {
7967 err = STATUS_INVALID_OPLOCK_PROTOCOL;
7968 oplock_change_type = OPLOCK_READ_TO_NONE;
7969 } else if (req_oplevel == SMB2_OPLOCK_LEVEL_II ||
7970 req_oplevel == SMB2_OPLOCK_LEVEL_NONE) {
7971 err = STATUS_INVALID_DEVICE_STATE;
7972 if ((opinfo->level == SMB2_OPLOCK_LEVEL_EXCLUSIVE ||
7973 opinfo->level == SMB2_OPLOCK_LEVEL_BATCH) &&
7974 req_oplevel == SMB2_OPLOCK_LEVEL_II) {
7975 oplock_change_type = OPLOCK_WRITE_TO_READ;
7976 } else if ((opinfo->level == SMB2_OPLOCK_LEVEL_EXCLUSIVE ||
7977 opinfo->level == SMB2_OPLOCK_LEVEL_BATCH) &&
7978 req_oplevel == SMB2_OPLOCK_LEVEL_NONE) {
7979 oplock_change_type = OPLOCK_WRITE_TO_NONE;
7980 } else if (opinfo->level == SMB2_OPLOCK_LEVEL_II &&
7981 req_oplevel == SMB2_OPLOCK_LEVEL_NONE) {
7982 oplock_change_type = OPLOCK_READ_TO_NONE;
7984 oplock_change_type = 0;
7987 oplock_change_type = 0;
7990 switch (oplock_change_type) {
7991 case OPLOCK_WRITE_TO_READ:
7992 ret = opinfo_write_to_read(opinfo);
7993 rsp_oplevel = SMB2_OPLOCK_LEVEL_II;
7995 case OPLOCK_WRITE_TO_NONE:
7996 ret = opinfo_write_to_none(opinfo);
7997 rsp_oplevel = SMB2_OPLOCK_LEVEL_NONE;
7999 case OPLOCK_READ_TO_NONE:
8000 ret = opinfo_read_to_none(opinfo);
8001 rsp_oplevel = SMB2_OPLOCK_LEVEL_NONE;
8004 pr_err("unknown oplock change 0x%x -> 0x%x\n",
8005 opinfo->level, rsp_oplevel);
8009 rsp->hdr.Status = err;
8014 ksmbd_fd_put(work, fp);
8015 opinfo->op_state = OPLOCK_STATE_NONE;
8016 wake_up_interruptible_all(&opinfo->oplock_q);
8018 rsp->StructureSize = cpu_to_le16(24);
8019 rsp->OplockLevel = rsp_oplevel;
8022 rsp->VolatileFid = volatile_id;
8023 rsp->PersistentFid = persistent_id;
8024 inc_rfc1001_len(work->response_buf, 24);
8028 opinfo->op_state = OPLOCK_STATE_NONE;
8029 wake_up_interruptible_all(&opinfo->oplock_q);
8032 ksmbd_fd_put(work, fp);
8033 smb2_set_err_rsp(work);
8036 static int check_lease_state(struct lease *lease, __le32 req_state)
8038 if ((lease->new_state ==
8039 (SMB2_LEASE_READ_CACHING_LE | SMB2_LEASE_HANDLE_CACHING_LE)) &&
8040 !(req_state & SMB2_LEASE_WRITE_CACHING_LE)) {
8041 lease->new_state = req_state;
8045 if (lease->new_state == req_state)
8052 * smb21_lease_break_ack() - handler for smb2.1 lease break command
8053 * @work: smb work containing lease break command buffer
8057 static void smb21_lease_break_ack(struct ksmbd_work *work)
8059 struct ksmbd_conn *conn = work->conn;
8060 struct smb2_lease_ack *req = smb2_get_msg(work->request_buf);
8061 struct smb2_lease_ack *rsp = smb2_get_msg(work->response_buf);
8062 struct oplock_info *opinfo;
8065 unsigned int lease_change_type;
8067 struct lease *lease;
8069 ksmbd_debug(OPLOCK, "smb21 lease break, lease state(0x%x)\n",
8070 le32_to_cpu(req->LeaseState));
8071 opinfo = lookup_lease_in_table(conn, req->LeaseKey);
8073 ksmbd_debug(OPLOCK, "file not opened\n");
8074 smb2_set_err_rsp(work);
8075 rsp->hdr.Status = STATUS_UNSUCCESSFUL;
8078 lease = opinfo->o_lease;
8080 if (opinfo->op_state == OPLOCK_STATE_NONE) {
8081 pr_err("unexpected lease break state 0x%x\n",
8083 rsp->hdr.Status = STATUS_UNSUCCESSFUL;
8087 if (check_lease_state(lease, req->LeaseState)) {
8088 rsp->hdr.Status = STATUS_REQUEST_NOT_ACCEPTED;
8090 "req lease state: 0x%x, expected state: 0x%x\n",
8091 req->LeaseState, lease->new_state);
8095 if (!atomic_read(&opinfo->breaking_cnt)) {
8096 rsp->hdr.Status = STATUS_UNSUCCESSFUL;
8100 /* check for bad lease state */
8101 if (req->LeaseState &
8102 (~(SMB2_LEASE_READ_CACHING_LE | SMB2_LEASE_HANDLE_CACHING_LE))) {
8103 err = STATUS_INVALID_OPLOCK_PROTOCOL;
8104 if (lease->state & SMB2_LEASE_WRITE_CACHING_LE)
8105 lease_change_type = OPLOCK_WRITE_TO_NONE;
8107 lease_change_type = OPLOCK_READ_TO_NONE;
8108 ksmbd_debug(OPLOCK, "handle bad lease state 0x%x -> 0x%x\n",
8109 le32_to_cpu(lease->state),
8110 le32_to_cpu(req->LeaseState));
8111 } else if (lease->state == SMB2_LEASE_READ_CACHING_LE &&
8112 req->LeaseState != SMB2_LEASE_NONE_LE) {
8113 err = STATUS_INVALID_OPLOCK_PROTOCOL;
8114 lease_change_type = OPLOCK_READ_TO_NONE;
8115 ksmbd_debug(OPLOCK, "handle bad lease state 0x%x -> 0x%x\n",
8116 le32_to_cpu(lease->state),
8117 le32_to_cpu(req->LeaseState));
8119 /* valid lease state changes */
8120 err = STATUS_INVALID_DEVICE_STATE;
8121 if (req->LeaseState == SMB2_LEASE_NONE_LE) {
8122 if (lease->state & SMB2_LEASE_WRITE_CACHING_LE)
8123 lease_change_type = OPLOCK_WRITE_TO_NONE;
8125 lease_change_type = OPLOCK_READ_TO_NONE;
8126 } else if (req->LeaseState & SMB2_LEASE_READ_CACHING_LE) {
8127 if (lease->state & SMB2_LEASE_WRITE_CACHING_LE)
8128 lease_change_type = OPLOCK_WRITE_TO_READ;
8130 lease_change_type = OPLOCK_READ_HANDLE_TO_READ;
8132 lease_change_type = 0;
8136 switch (lease_change_type) {
8137 case OPLOCK_WRITE_TO_READ:
8138 ret = opinfo_write_to_read(opinfo);
8140 case OPLOCK_READ_HANDLE_TO_READ:
8141 ret = opinfo_read_handle_to_read(opinfo);
8143 case OPLOCK_WRITE_TO_NONE:
8144 ret = opinfo_write_to_none(opinfo);
8146 case OPLOCK_READ_TO_NONE:
8147 ret = opinfo_read_to_none(opinfo);
8150 ksmbd_debug(OPLOCK, "unknown lease change 0x%x -> 0x%x\n",
8151 le32_to_cpu(lease->state),
8152 le32_to_cpu(req->LeaseState));
8155 lease_state = lease->state;
8156 opinfo->op_state = OPLOCK_STATE_NONE;
8157 wake_up_interruptible_all(&opinfo->oplock_q);
8158 atomic_dec(&opinfo->breaking_cnt);
8159 wake_up_interruptible_all(&opinfo->oplock_brk);
8163 rsp->hdr.Status = err;
8167 rsp->StructureSize = cpu_to_le16(36);
8170 memcpy(rsp->LeaseKey, req->LeaseKey, 16);
8171 rsp->LeaseState = lease_state;
8172 rsp->LeaseDuration = 0;
8173 inc_rfc1001_len(work->response_buf, 36);
8177 opinfo->op_state = OPLOCK_STATE_NONE;
8178 wake_up_interruptible_all(&opinfo->oplock_q);
8179 atomic_dec(&opinfo->breaking_cnt);
8180 wake_up_interruptible_all(&opinfo->oplock_brk);
8183 smb2_set_err_rsp(work);
8187 * smb2_oplock_break() - dispatcher for smb2.0 and 2.1 oplock/lease break
8188 * @work: smb work containing oplock/lease break command buffer
8192 int smb2_oplock_break(struct ksmbd_work *work)
8194 struct smb2_oplock_break *req = smb2_get_msg(work->request_buf);
8195 struct smb2_oplock_break *rsp = smb2_get_msg(work->response_buf);
8197 switch (le16_to_cpu(req->StructureSize)) {
8198 case OP_BREAK_STRUCT_SIZE_20:
8199 smb20_oplock_break_ack(work);
8201 case OP_BREAK_STRUCT_SIZE_21:
8202 smb21_lease_break_ack(work);
8205 ksmbd_debug(OPLOCK, "invalid break cmd %d\n",
8206 le16_to_cpu(req->StructureSize));
8207 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
8208 smb2_set_err_rsp(work);
8215 * smb2_notify() - handler for smb2 notify request
8216 * @work: smb work containing notify command buffer
8220 int smb2_notify(struct ksmbd_work *work)
8222 struct smb2_change_notify_req *req;
8223 struct smb2_change_notify_rsp *rsp;
8225 WORK_BUFFERS(work, req, rsp);
8227 if (work->next_smb2_rcv_hdr_off && req->hdr.NextCommand) {
8228 rsp->hdr.Status = STATUS_INTERNAL_ERROR;
8229 smb2_set_err_rsp(work);
8233 smb2_set_err_rsp(work);
8234 rsp->hdr.Status = STATUS_NOT_IMPLEMENTED;
8239 * smb2_is_sign_req() - handler for checking packet signing status
8240 * @work: smb work containing notify command buffer
8241 * @command: SMB2 command id
8243 * Return: true if packed is signed, false otherwise
8245 bool smb2_is_sign_req(struct ksmbd_work *work, unsigned int command)
8247 struct smb2_hdr *rcv_hdr2 = smb2_get_msg(work->request_buf);
8249 if ((rcv_hdr2->Flags & SMB2_FLAGS_SIGNED) &&
8250 command != SMB2_NEGOTIATE_HE &&
8251 command != SMB2_SESSION_SETUP_HE &&
8252 command != SMB2_OPLOCK_BREAK_HE)
8259 * smb2_check_sign_req() - handler for req packet sign processing
8260 * @work: smb work containing notify command buffer
8262 * Return: 1 on success, 0 otherwise
8264 int smb2_check_sign_req(struct ksmbd_work *work)
8266 struct smb2_hdr *hdr;
8267 char signature_req[SMB2_SIGNATURE_SIZE];
8268 char signature[SMB2_HMACSHA256_SIZE];
8272 hdr = smb2_get_msg(work->request_buf);
8273 if (work->next_smb2_rcv_hdr_off)
8274 hdr = ksmbd_req_buf_next(work);
8276 if (!hdr->NextCommand && !work->next_smb2_rcv_hdr_off)
8277 len = get_rfc1002_len(work->request_buf);
8278 else if (hdr->NextCommand)
8279 len = le32_to_cpu(hdr->NextCommand);
8281 len = get_rfc1002_len(work->request_buf) -
8282 work->next_smb2_rcv_hdr_off;
8284 memcpy(signature_req, hdr->Signature, SMB2_SIGNATURE_SIZE);
8285 memset(hdr->Signature, 0, SMB2_SIGNATURE_SIZE);
8287 iov[0].iov_base = (char *)&hdr->ProtocolId;
8288 iov[0].iov_len = len;
8290 if (ksmbd_sign_smb2_pdu(work->conn, work->sess->sess_key, iov, 1,
8294 if (memcmp(signature, signature_req, SMB2_SIGNATURE_SIZE)) {
8295 pr_err("bad smb2 signature\n");
8303 * smb2_set_sign_rsp() - handler for rsp packet sign processing
8304 * @work: smb work containing notify command buffer
8307 void smb2_set_sign_rsp(struct ksmbd_work *work)
8309 struct smb2_hdr *hdr;
8310 struct smb2_hdr *req_hdr;
8311 char signature[SMB2_HMACSHA256_SIZE];
8316 hdr = smb2_get_msg(work->response_buf);
8317 if (work->next_smb2_rsp_hdr_off)
8318 hdr = ksmbd_resp_buf_next(work);
8320 req_hdr = ksmbd_req_buf_next(work);
8322 if (!work->next_smb2_rsp_hdr_off) {
8323 len = get_rfc1002_len(work->response_buf);
8324 if (req_hdr->NextCommand)
8325 len = ALIGN(len, 8);
8327 len = get_rfc1002_len(work->response_buf) -
8328 work->next_smb2_rsp_hdr_off;
8329 len = ALIGN(len, 8);
8332 if (req_hdr->NextCommand)
8333 hdr->NextCommand = cpu_to_le32(len);
8335 hdr->Flags |= SMB2_FLAGS_SIGNED;
8336 memset(hdr->Signature, 0, SMB2_SIGNATURE_SIZE);
8338 iov[0].iov_base = (char *)&hdr->ProtocolId;
8339 iov[0].iov_len = len;
8341 if (work->aux_payload_sz) {
8342 iov[0].iov_len -= work->aux_payload_sz;
8344 iov[1].iov_base = work->aux_payload_buf;
8345 iov[1].iov_len = work->aux_payload_sz;
8349 if (!ksmbd_sign_smb2_pdu(work->conn, work->sess->sess_key, iov, n_vec,
8351 memcpy(hdr->Signature, signature, SMB2_SIGNATURE_SIZE);
8355 * smb3_check_sign_req() - handler for req packet sign processing
8356 * @work: smb work containing notify command buffer
8358 * Return: 1 on success, 0 otherwise
8360 int smb3_check_sign_req(struct ksmbd_work *work)
8362 struct ksmbd_conn *conn = work->conn;
8364 struct smb2_hdr *hdr;
8365 struct channel *chann;
8366 char signature_req[SMB2_SIGNATURE_SIZE];
8367 char signature[SMB2_CMACAES_SIZE];
8371 hdr = smb2_get_msg(work->request_buf);
8372 if (work->next_smb2_rcv_hdr_off)
8373 hdr = ksmbd_req_buf_next(work);
8375 if (!hdr->NextCommand && !work->next_smb2_rcv_hdr_off)
8376 len = get_rfc1002_len(work->request_buf);
8377 else if (hdr->NextCommand)
8378 len = le32_to_cpu(hdr->NextCommand);
8380 len = get_rfc1002_len(work->request_buf) -
8381 work->next_smb2_rcv_hdr_off;
8383 if (le16_to_cpu(hdr->Command) == SMB2_SESSION_SETUP_HE) {
8384 signing_key = work->sess->smb3signingkey;
8386 read_lock(&work->sess->chann_lock);
8387 chann = lookup_chann_list(work->sess, conn);
8389 read_unlock(&work->sess->chann_lock);
8392 signing_key = chann->smb3signingkey;
8393 read_unlock(&work->sess->chann_lock);
8397 pr_err("SMB3 signing key is not generated\n");
8401 memcpy(signature_req, hdr->Signature, SMB2_SIGNATURE_SIZE);
8402 memset(hdr->Signature, 0, SMB2_SIGNATURE_SIZE);
8403 iov[0].iov_base = (char *)&hdr->ProtocolId;
8404 iov[0].iov_len = len;
8406 if (ksmbd_sign_smb3_pdu(conn, signing_key, iov, 1, signature))
8409 if (memcmp(signature, signature_req, SMB2_SIGNATURE_SIZE)) {
8410 pr_err("bad smb2 signature\n");
8418 * smb3_set_sign_rsp() - handler for rsp packet sign processing
8419 * @work: smb work containing notify command buffer
8422 void smb3_set_sign_rsp(struct ksmbd_work *work)
8424 struct ksmbd_conn *conn = work->conn;
8425 struct smb2_hdr *req_hdr, *hdr;
8426 struct channel *chann;
8427 char signature[SMB2_CMACAES_SIZE];
8433 hdr = smb2_get_msg(work->response_buf);
8434 if (work->next_smb2_rsp_hdr_off)
8435 hdr = ksmbd_resp_buf_next(work);
8437 req_hdr = ksmbd_req_buf_next(work);
8439 if (!work->next_smb2_rsp_hdr_off) {
8440 len = get_rfc1002_len(work->response_buf);
8441 if (req_hdr->NextCommand)
8442 len = ALIGN(len, 8);
8444 len = get_rfc1002_len(work->response_buf) -
8445 work->next_smb2_rsp_hdr_off;
8446 len = ALIGN(len, 8);
8449 if (conn->binding == false &&
8450 le16_to_cpu(hdr->Command) == SMB2_SESSION_SETUP_HE) {
8451 signing_key = work->sess->smb3signingkey;
8453 read_lock(&work->sess->chann_lock);
8454 chann = lookup_chann_list(work->sess, work->conn);
8456 read_unlock(&work->sess->chann_lock);
8459 signing_key = chann->smb3signingkey;
8460 read_unlock(&work->sess->chann_lock);
8466 if (req_hdr->NextCommand)
8467 hdr->NextCommand = cpu_to_le32(len);
8469 hdr->Flags |= SMB2_FLAGS_SIGNED;
8470 memset(hdr->Signature, 0, SMB2_SIGNATURE_SIZE);
8471 iov[0].iov_base = (char *)&hdr->ProtocolId;
8472 iov[0].iov_len = len;
8473 if (work->aux_payload_sz) {
8474 iov[0].iov_len -= work->aux_payload_sz;
8475 iov[1].iov_base = work->aux_payload_buf;
8476 iov[1].iov_len = work->aux_payload_sz;
8480 if (!ksmbd_sign_smb3_pdu(conn, signing_key, iov, n_vec, signature))
8481 memcpy(hdr->Signature, signature, SMB2_SIGNATURE_SIZE);
8485 * smb3_preauth_hash_rsp() - handler for computing preauth hash on response
8486 * @work: smb work containing response buffer
8489 void smb3_preauth_hash_rsp(struct ksmbd_work *work)
8491 struct ksmbd_conn *conn = work->conn;
8492 struct ksmbd_session *sess = work->sess;
8493 struct smb2_hdr *req, *rsp;
8495 if (conn->dialect != SMB311_PROT_ID)
8498 WORK_BUFFERS(work, req, rsp);
8500 if (le16_to_cpu(req->Command) == SMB2_NEGOTIATE_HE &&
8502 ksmbd_gen_preauth_integrity_hash(conn, work->response_buf,
8503 conn->preauth_info->Preauth_HashValue);
8505 if (le16_to_cpu(rsp->Command) == SMB2_SESSION_SETUP_HE && sess) {
8508 if (conn->binding) {
8509 struct preauth_session *preauth_sess;
8511 preauth_sess = ksmbd_preauth_session_lookup(conn, sess->id);
8514 hash_value = preauth_sess->Preauth_HashValue;
8516 hash_value = sess->Preauth_HashValue;
8520 ksmbd_gen_preauth_integrity_hash(conn, work->response_buf,
8525 static void fill_transform_hdr(void *tr_buf, char *old_buf, __le16 cipher_type)
8527 struct smb2_transform_hdr *tr_hdr = tr_buf + 4;
8528 struct smb2_hdr *hdr = smb2_get_msg(old_buf);
8529 unsigned int orig_len = get_rfc1002_len(old_buf);
8531 /* tr_buf must be cleared by the caller */
8532 tr_hdr->ProtocolId = SMB2_TRANSFORM_PROTO_NUM;
8533 tr_hdr->OriginalMessageSize = cpu_to_le32(orig_len);
8534 tr_hdr->Flags = cpu_to_le16(TRANSFORM_FLAG_ENCRYPTED);
8535 if (cipher_type == SMB2_ENCRYPTION_AES128_GCM ||
8536 cipher_type == SMB2_ENCRYPTION_AES256_GCM)
8537 get_random_bytes(&tr_hdr->Nonce, SMB3_AES_GCM_NONCE);
8539 get_random_bytes(&tr_hdr->Nonce, SMB3_AES_CCM_NONCE);
8540 memcpy(&tr_hdr->SessionId, &hdr->SessionId, 8);
8541 inc_rfc1001_len(tr_buf, sizeof(struct smb2_transform_hdr));
8542 inc_rfc1001_len(tr_buf, orig_len);
8545 int smb3_encrypt_resp(struct ksmbd_work *work)
8547 char *buf = work->response_buf;
8550 int buf_size = 0, rq_nvec = 2 + (work->aux_payload_sz ? 1 : 0);
8552 if (ARRAY_SIZE(iov) < rq_nvec)
8555 work->tr_buf = kzalloc(sizeof(struct smb2_transform_hdr) + 4, GFP_KERNEL);
8559 /* fill transform header */
8560 fill_transform_hdr(work->tr_buf, buf, work->conn->cipher_type);
8562 iov[0].iov_base = work->tr_buf;
8563 iov[0].iov_len = sizeof(struct smb2_transform_hdr) + 4;
8564 buf_size += iov[0].iov_len - 4;
8566 iov[1].iov_base = buf + 4;
8567 iov[1].iov_len = get_rfc1002_len(buf);
8568 if (work->aux_payload_sz) {
8569 iov[1].iov_len = work->resp_hdr_sz - 4;
8571 iov[2].iov_base = work->aux_payload_buf;
8572 iov[2].iov_len = work->aux_payload_sz;
8573 buf_size += iov[2].iov_len;
8575 buf_size += iov[1].iov_len;
8576 work->resp_hdr_sz = iov[1].iov_len;
8578 rc = ksmbd_crypt_message(work->conn, iov, rq_nvec, 1);
8582 memmove(buf, iov[1].iov_base, iov[1].iov_len);
8583 *(__be32 *)work->tr_buf = cpu_to_be32(buf_size);
8588 bool smb3_is_transform_hdr(void *buf)
8590 struct smb2_transform_hdr *trhdr = smb2_get_msg(buf);
8592 return trhdr->ProtocolId == SMB2_TRANSFORM_PROTO_NUM;
8595 int smb3_decrypt_req(struct ksmbd_work *work)
8597 struct ksmbd_conn *conn = work->conn;
8598 struct ksmbd_session *sess;
8599 char *buf = work->request_buf;
8600 unsigned int pdu_length = get_rfc1002_len(buf);
8602 int buf_data_size = pdu_length - sizeof(struct smb2_transform_hdr);
8603 struct smb2_transform_hdr *tr_hdr = smb2_get_msg(buf);
8606 if (buf_data_size < sizeof(struct smb2_hdr)) {
8607 pr_err("Transform message is too small (%u)\n",
8609 return -ECONNABORTED;
8612 if (buf_data_size < le32_to_cpu(tr_hdr->OriginalMessageSize)) {
8613 pr_err("Transform message is broken\n");
8614 return -ECONNABORTED;
8617 sess = ksmbd_session_lookup_all(conn, le64_to_cpu(tr_hdr->SessionId));
8619 pr_err("invalid session id(%llx) in transform header\n",
8620 le64_to_cpu(tr_hdr->SessionId));
8621 return -ECONNABORTED;
8624 iov[0].iov_base = buf;
8625 iov[0].iov_len = sizeof(struct smb2_transform_hdr) + 4;
8626 iov[1].iov_base = buf + sizeof(struct smb2_transform_hdr) + 4;
8627 iov[1].iov_len = buf_data_size;
8628 rc = ksmbd_crypt_message(conn, iov, 2, 0);
8632 memmove(buf + 4, iov[1].iov_base, buf_data_size);
8633 *(__be32 *)buf = cpu_to_be32(buf_data_size);
8638 bool smb3_11_final_sess_setup_resp(struct ksmbd_work *work)
8640 struct ksmbd_conn *conn = work->conn;
8641 struct smb2_hdr *rsp = smb2_get_msg(work->response_buf);
8643 if (conn->dialect < SMB30_PROT_ID)
8646 if (work->next_smb2_rcv_hdr_off)
8647 rsp = ksmbd_resp_buf_next(work);
8649 if (le16_to_cpu(rsp->Command) == SMB2_SESSION_SETUP_HE &&
8650 rsp->Status == STATUS_SUCCESS)