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_OFF)
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 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 if (server_conf.flags & KSMBD_GLOBAL_FLAG_SMB2_ENCRYPTION)
1512 rsp->SessionFlags = SMB2_SESSION_FLAG_ENCRYPT_DATA_LE;
1514 * signing is disable if encryption is enable
1521 if (conn->dialect >= SMB30_PROT_ID) {
1522 read_lock(&sess->chann_lock);
1523 chann = lookup_chann_list(sess, conn);
1524 read_unlock(&sess->chann_lock);
1526 chann = kmalloc(sizeof(struct channel), GFP_KERNEL);
1531 INIT_LIST_HEAD(&chann->chann_list);
1532 write_lock(&sess->chann_lock);
1533 list_add(&chann->chann_list, &sess->ksmbd_chann_list);
1534 write_unlock(&sess->chann_lock);
1538 if (conn->ops->generate_signingkey) {
1539 rc = conn->ops->generate_signingkey(sess, conn);
1541 ksmbd_debug(SMB, "SMB3 signing key generation failed\n");
1546 if (!ksmbd_conn_lookup_dialect(conn)) {
1547 pr_err("fail to verify the dialect\n");
1553 #ifdef CONFIG_SMB_SERVER_KERBEROS5
1554 static int krb5_authenticate(struct ksmbd_work *work)
1556 struct smb2_sess_setup_req *req = smb2_get_msg(work->request_buf);
1557 struct smb2_sess_setup_rsp *rsp = smb2_get_msg(work->response_buf);
1558 struct ksmbd_conn *conn = work->conn;
1559 struct ksmbd_session *sess = work->sess;
1560 char *in_blob, *out_blob;
1561 struct channel *chann = NULL;
1563 int in_len, out_len;
1566 in_blob = (char *)&req->hdr.ProtocolId +
1567 le16_to_cpu(req->SecurityBufferOffset);
1568 in_len = le16_to_cpu(req->SecurityBufferLength);
1569 out_blob = (char *)&rsp->hdr.ProtocolId +
1570 le16_to_cpu(rsp->SecurityBufferOffset);
1571 out_len = work->response_sz -
1572 (le16_to_cpu(rsp->SecurityBufferOffset) + 4);
1574 /* Check previous session */
1575 prev_sess_id = le64_to_cpu(req->PreviousSessionId);
1576 if (prev_sess_id && prev_sess_id != sess->id)
1577 destroy_previous_session(conn, sess->user, prev_sess_id);
1579 if (sess->state == SMB2_SESSION_VALID)
1580 ksmbd_free_user(sess->user);
1582 retval = ksmbd_krb5_authenticate(sess, in_blob, in_len,
1583 out_blob, &out_len);
1585 ksmbd_debug(SMB, "krb5 authentication failed\n");
1588 rsp->SecurityBufferLength = cpu_to_le16(out_len);
1589 inc_rfc1001_len(work->response_buf, out_len - 1);
1591 if ((conn->sign || server_conf.enforced_signing) ||
1592 (req->SecurityMode & SMB2_NEGOTIATE_SIGNING_REQUIRED))
1595 if (smb3_encryption_negotiated(conn)) {
1596 retval = conn->ops->generate_encryptionkey(conn, sess);
1599 "SMB3 encryption key generation failed\n");
1603 if (server_conf.flags & KSMBD_GLOBAL_FLAG_SMB2_ENCRYPTION)
1604 rsp->SessionFlags = SMB2_SESSION_FLAG_ENCRYPT_DATA_LE;
1608 if (conn->dialect >= SMB30_PROT_ID) {
1609 read_lock(&sess->chann_lock);
1610 chann = lookup_chann_list(sess, conn);
1611 read_unlock(&sess->chann_lock);
1613 chann = kmalloc(sizeof(struct channel), GFP_KERNEL);
1618 INIT_LIST_HEAD(&chann->chann_list);
1619 write_lock(&sess->chann_lock);
1620 list_add(&chann->chann_list, &sess->ksmbd_chann_list);
1621 write_unlock(&sess->chann_lock);
1625 if (conn->ops->generate_signingkey) {
1626 retval = conn->ops->generate_signingkey(sess, conn);
1628 ksmbd_debug(SMB, "SMB3 signing key generation failed\n");
1633 if (!ksmbd_conn_lookup_dialect(conn)) {
1634 pr_err("fail to verify the dialect\n");
1640 static int krb5_authenticate(struct ksmbd_work *work)
1646 int smb2_sess_setup(struct ksmbd_work *work)
1648 struct ksmbd_conn *conn = work->conn;
1649 struct smb2_sess_setup_req *req = smb2_get_msg(work->request_buf);
1650 struct smb2_sess_setup_rsp *rsp = smb2_get_msg(work->response_buf);
1651 struct ksmbd_session *sess;
1652 struct negotiate_message *negblob;
1653 unsigned int negblob_len, negblob_off;
1656 ksmbd_debug(SMB, "Received request for session setup\n");
1658 rsp->StructureSize = cpu_to_le16(9);
1659 rsp->SessionFlags = 0;
1660 rsp->SecurityBufferOffset = cpu_to_le16(72);
1661 rsp->SecurityBufferLength = 0;
1662 inc_rfc1001_len(work->response_buf, 9);
1664 if (!req->hdr.SessionId) {
1665 sess = ksmbd_smb2_session_create();
1670 rsp->hdr.SessionId = cpu_to_le64(sess->id);
1671 rc = ksmbd_session_register(conn, sess);
1674 } else if (conn->dialect >= SMB30_PROT_ID &&
1675 (server_conf.flags & KSMBD_GLOBAL_FLAG_SMB3_MULTICHANNEL) &&
1676 req->Flags & SMB2_SESSION_REQ_FLAG_BINDING) {
1677 u64 sess_id = le64_to_cpu(req->hdr.SessionId);
1679 sess = ksmbd_session_lookup_slowpath(sess_id);
1685 if (conn->dialect != sess->dialect) {
1690 if (!(req->hdr.Flags & SMB2_FLAGS_SIGNED)) {
1695 if (strncmp(conn->ClientGUID, sess->ClientGUID,
1696 SMB2_CLIENT_GUID_SIZE)) {
1701 if (sess->state == SMB2_SESSION_IN_PROGRESS) {
1706 if (sess->state == SMB2_SESSION_EXPIRED) {
1711 if (ksmbd_session_lookup(conn, sess_id)) {
1716 conn->binding = true;
1717 } else if ((conn->dialect < SMB30_PROT_ID ||
1718 server_conf.flags & KSMBD_GLOBAL_FLAG_SMB3_MULTICHANNEL) &&
1719 (req->Flags & SMB2_SESSION_REQ_FLAG_BINDING)) {
1724 sess = ksmbd_session_lookup(conn,
1725 le64_to_cpu(req->hdr.SessionId));
1733 if (sess->state == SMB2_SESSION_EXPIRED)
1734 sess->state = SMB2_SESSION_IN_PROGRESS;
1736 negblob_off = le16_to_cpu(req->SecurityBufferOffset);
1737 negblob_len = le16_to_cpu(req->SecurityBufferLength);
1738 if (negblob_off < offsetof(struct smb2_sess_setup_req, Buffer) ||
1739 negblob_len < offsetof(struct negotiate_message, NegotiateFlags)) {
1744 negblob = (struct negotiate_message *)((char *)&req->hdr.ProtocolId +
1747 if (decode_negotiation_token(conn, negblob, negblob_len) == 0) {
1748 if (conn->mechToken)
1749 negblob = (struct negotiate_message *)conn->mechToken;
1752 if (server_conf.auth_mechs & conn->auth_mechs) {
1753 rc = generate_preauth_hash(work);
1757 if (conn->preferred_auth_mech &
1758 (KSMBD_AUTH_KRB5 | KSMBD_AUTH_MSKRB5)) {
1759 rc = krb5_authenticate(work);
1765 ksmbd_conn_set_good(work);
1766 sess->state = SMB2_SESSION_VALID;
1767 kfree(sess->Preauth_HashValue);
1768 sess->Preauth_HashValue = NULL;
1769 } else if (conn->preferred_auth_mech == KSMBD_AUTH_NTLMSSP) {
1770 if (negblob->MessageType == NtLmNegotiate) {
1771 rc = ntlm_negotiate(work, negblob, negblob_len);
1775 STATUS_MORE_PROCESSING_REQUIRED;
1777 * Note: here total size -1 is done as an
1778 * adjustment for 0 size blob
1780 inc_rfc1001_len(work->response_buf,
1781 le16_to_cpu(rsp->SecurityBufferLength) - 1);
1783 } else if (negblob->MessageType == NtLmAuthenticate) {
1784 rc = ntlm_authenticate(work);
1788 ksmbd_conn_set_good(work);
1789 sess->state = SMB2_SESSION_VALID;
1790 if (conn->binding) {
1791 struct preauth_session *preauth_sess;
1794 ksmbd_preauth_session_lookup(conn, sess->id);
1796 list_del(&preauth_sess->preauth_entry);
1797 kfree(preauth_sess);
1800 kfree(sess->Preauth_HashValue);
1801 sess->Preauth_HashValue = NULL;
1804 /* TODO: need one more negotiation */
1805 pr_err("Not support the preferred authentication\n");
1809 pr_err("Not support authentication\n");
1815 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
1816 else if (rc == -ENOENT)
1817 rsp->hdr.Status = STATUS_USER_SESSION_DELETED;
1818 else if (rc == -EACCES)
1819 rsp->hdr.Status = STATUS_REQUEST_NOT_ACCEPTED;
1820 else if (rc == -EFAULT)
1821 rsp->hdr.Status = STATUS_NETWORK_SESSION_EXPIRED;
1822 else if (rc == -ENOMEM)
1823 rsp->hdr.Status = STATUS_INSUFFICIENT_RESOURCES;
1825 rsp->hdr.Status = STATUS_LOGON_FAILURE;
1827 if (conn->use_spnego && conn->mechToken) {
1828 kfree(conn->mechToken);
1829 conn->mechToken = NULL;
1834 * SecurityBufferOffset should be set to zero
1835 * in session setup error response.
1837 rsp->SecurityBufferOffset = 0;
1840 bool try_delay = false;
1843 * To avoid dictionary attacks (repeated session setups rapidly sent) to
1844 * connect to server, ksmbd make a delay of a 5 seconds on session setup
1845 * failure to make it harder to send enough random connection requests
1846 * to break into a server.
1848 if (sess->user && sess->user->flags & KSMBD_USER_FLAG_DELAY_SESSION)
1851 xa_erase(&conn->sessions, sess->id);
1852 ksmbd_session_destroy(sess);
1863 * smb2_tree_connect() - handler for smb2 tree connect command
1864 * @work: smb work containing smb request buffer
1866 * Return: 0 on success, otherwise error
1868 int smb2_tree_connect(struct ksmbd_work *work)
1870 struct ksmbd_conn *conn = work->conn;
1871 struct smb2_tree_connect_req *req = smb2_get_msg(work->request_buf);
1872 struct smb2_tree_connect_rsp *rsp = smb2_get_msg(work->response_buf);
1873 struct ksmbd_session *sess = work->sess;
1874 char *treename = NULL, *name = NULL;
1875 struct ksmbd_tree_conn_status status;
1876 struct ksmbd_share_config *share;
1879 treename = smb_strndup_from_utf16(req->Buffer,
1880 le16_to_cpu(req->PathLength), true,
1882 if (IS_ERR(treename)) {
1883 pr_err("treename is NULL\n");
1884 status.ret = KSMBD_TREE_CONN_STATUS_ERROR;
1888 name = ksmbd_extract_sharename(conn->um, treename);
1890 status.ret = KSMBD_TREE_CONN_STATUS_ERROR;
1894 ksmbd_debug(SMB, "tree connect request for tree %s treename %s\n",
1897 status = ksmbd_tree_conn_connect(conn, sess, name);
1898 if (status.ret == KSMBD_TREE_CONN_STATUS_OK)
1899 rsp->hdr.Id.SyncId.TreeId = cpu_to_le32(status.tree_conn->id);
1903 share = status.tree_conn->share_conf;
1904 if (test_share_config_flag(share, KSMBD_SHARE_FLAG_PIPE)) {
1905 ksmbd_debug(SMB, "IPC share path request\n");
1906 rsp->ShareType = SMB2_SHARE_TYPE_PIPE;
1907 rsp->MaximalAccess = FILE_READ_DATA_LE | FILE_READ_EA_LE |
1908 FILE_EXECUTE_LE | FILE_READ_ATTRIBUTES_LE |
1909 FILE_DELETE_LE | FILE_READ_CONTROL_LE |
1910 FILE_WRITE_DAC_LE | FILE_WRITE_OWNER_LE |
1911 FILE_SYNCHRONIZE_LE;
1913 rsp->ShareType = SMB2_SHARE_TYPE_DISK;
1914 rsp->MaximalAccess = FILE_READ_DATA_LE | FILE_READ_EA_LE |
1915 FILE_EXECUTE_LE | FILE_READ_ATTRIBUTES_LE;
1916 if (test_tree_conn_flag(status.tree_conn,
1917 KSMBD_TREE_CONN_FLAG_WRITABLE)) {
1918 rsp->MaximalAccess |= FILE_WRITE_DATA_LE |
1919 FILE_APPEND_DATA_LE | FILE_WRITE_EA_LE |
1920 FILE_DELETE_LE | FILE_WRITE_ATTRIBUTES_LE |
1921 FILE_DELETE_CHILD_LE | FILE_READ_CONTROL_LE |
1922 FILE_WRITE_DAC_LE | FILE_WRITE_OWNER_LE |
1923 FILE_SYNCHRONIZE_LE;
1927 status.tree_conn->maximal_access = le32_to_cpu(rsp->MaximalAccess);
1928 if (conn->posix_ext_supported)
1929 status.tree_conn->posix_extensions = true;
1932 rsp->StructureSize = cpu_to_le16(16);
1933 rsp->Capabilities = 0;
1935 /* default manual caching */
1936 rsp->ShareFlags = SMB2_SHAREFLAG_MANUAL_CACHING;
1937 inc_rfc1001_len(work->response_buf, 16);
1939 if (!IS_ERR(treename))
1944 switch (status.ret) {
1945 case KSMBD_TREE_CONN_STATUS_OK:
1946 rsp->hdr.Status = STATUS_SUCCESS;
1951 case KSMBD_TREE_CONN_STATUS_NO_SHARE:
1952 rsp->hdr.Status = STATUS_BAD_NETWORK_NAME;
1955 case KSMBD_TREE_CONN_STATUS_NOMEM:
1956 rsp->hdr.Status = STATUS_NO_MEMORY;
1958 case KSMBD_TREE_CONN_STATUS_ERROR:
1959 case KSMBD_TREE_CONN_STATUS_TOO_MANY_CONNS:
1960 case KSMBD_TREE_CONN_STATUS_TOO_MANY_SESSIONS:
1961 rsp->hdr.Status = STATUS_ACCESS_DENIED;
1964 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
1967 rsp->hdr.Status = STATUS_ACCESS_DENIED;
1974 * smb2_create_open_flags() - convert smb open flags to unix open flags
1975 * @file_present: is file already present
1976 * @access: file access flags
1977 * @disposition: file disposition flags
1978 * @may_flags: set with MAY_ flags
1980 * Return: file open flags
1982 static int smb2_create_open_flags(bool file_present, __le32 access,
1986 int oflags = O_NONBLOCK | O_LARGEFILE;
1988 if (access & FILE_READ_DESIRED_ACCESS_LE &&
1989 access & FILE_WRITE_DESIRE_ACCESS_LE) {
1991 *may_flags = MAY_OPEN | MAY_READ | MAY_WRITE;
1992 } else if (access & FILE_WRITE_DESIRE_ACCESS_LE) {
1994 *may_flags = MAY_OPEN | MAY_WRITE;
1997 *may_flags = MAY_OPEN | MAY_READ;
2000 if (access == FILE_READ_ATTRIBUTES_LE)
2004 switch (disposition & FILE_CREATE_MASK_LE) {
2006 case FILE_CREATE_LE:
2008 case FILE_SUPERSEDE_LE:
2009 case FILE_OVERWRITE_LE:
2010 case FILE_OVERWRITE_IF_LE:
2017 switch (disposition & FILE_CREATE_MASK_LE) {
2018 case FILE_SUPERSEDE_LE:
2019 case FILE_CREATE_LE:
2020 case FILE_OPEN_IF_LE:
2021 case FILE_OVERWRITE_IF_LE:
2025 case FILE_OVERWRITE_LE:
2037 * smb2_tree_disconnect() - handler for smb tree connect request
2038 * @work: smb work containing request buffer
2042 int smb2_tree_disconnect(struct ksmbd_work *work)
2044 struct smb2_tree_disconnect_rsp *rsp = smb2_get_msg(work->response_buf);
2045 struct ksmbd_session *sess = work->sess;
2046 struct ksmbd_tree_connect *tcon = work->tcon;
2048 rsp->StructureSize = cpu_to_le16(4);
2049 inc_rfc1001_len(work->response_buf, 4);
2051 ksmbd_debug(SMB, "request\n");
2054 struct smb2_tree_disconnect_req *req =
2055 smb2_get_msg(work->request_buf);
2057 ksmbd_debug(SMB, "Invalid tid %d\n", req->hdr.Id.SyncId.TreeId);
2058 rsp->hdr.Status = STATUS_NETWORK_NAME_DELETED;
2059 smb2_set_err_rsp(work);
2063 ksmbd_close_tree_conn_fds(work);
2064 ksmbd_tree_conn_disconnect(sess, tcon);
2070 * smb2_session_logoff() - handler for session log off request
2071 * @work: smb work containing request buffer
2075 int smb2_session_logoff(struct ksmbd_work *work)
2077 struct ksmbd_conn *conn = work->conn;
2078 struct smb2_logoff_rsp *rsp = smb2_get_msg(work->response_buf);
2079 struct ksmbd_session *sess = work->sess;
2081 rsp->StructureSize = cpu_to_le16(4);
2082 inc_rfc1001_len(work->response_buf, 4);
2084 ksmbd_debug(SMB, "request\n");
2086 /* setting CifsExiting here may race with start_tcp_sess */
2087 ksmbd_conn_set_need_reconnect(work);
2088 ksmbd_close_session_fds(work);
2089 ksmbd_conn_wait_idle(conn);
2091 if (ksmbd_tree_conn_session_logoff(sess)) {
2092 struct smb2_logoff_req *req = smb2_get_msg(work->request_buf);
2094 ksmbd_debug(SMB, "Invalid tid %d\n", req->hdr.Id.SyncId.TreeId);
2095 rsp->hdr.Status = STATUS_NETWORK_NAME_DELETED;
2096 smb2_set_err_rsp(work);
2100 ksmbd_destroy_file_table(&sess->file_table);
2101 sess->state = SMB2_SESSION_EXPIRED;
2103 ksmbd_free_user(sess->user);
2106 /* let start_tcp_sess free connection info now */
2107 ksmbd_conn_set_need_negotiate(work);
2112 * create_smb2_pipe() - create IPC pipe
2113 * @work: smb work containing request buffer
2115 * Return: 0 on success, otherwise error
2117 static noinline int create_smb2_pipe(struct ksmbd_work *work)
2119 struct smb2_create_rsp *rsp = smb2_get_msg(work->response_buf);
2120 struct smb2_create_req *req = smb2_get_msg(work->request_buf);
2125 name = smb_strndup_from_utf16(req->Buffer, le16_to_cpu(req->NameLength),
2126 1, work->conn->local_nls);
2128 rsp->hdr.Status = STATUS_NO_MEMORY;
2129 err = PTR_ERR(name);
2133 id = ksmbd_session_rpc_open(work->sess, name);
2135 pr_err("Unable to open RPC pipe: %d\n", id);
2140 rsp->hdr.Status = STATUS_SUCCESS;
2141 rsp->StructureSize = cpu_to_le16(89);
2142 rsp->OplockLevel = SMB2_OPLOCK_LEVEL_NONE;
2144 rsp->CreateAction = cpu_to_le32(FILE_OPENED);
2146 rsp->CreationTime = cpu_to_le64(0);
2147 rsp->LastAccessTime = cpu_to_le64(0);
2148 rsp->ChangeTime = cpu_to_le64(0);
2149 rsp->AllocationSize = cpu_to_le64(0);
2150 rsp->EndofFile = cpu_to_le64(0);
2151 rsp->FileAttributes = FILE_ATTRIBUTE_NORMAL_LE;
2153 rsp->VolatileFileId = id;
2154 rsp->PersistentFileId = 0;
2155 rsp->CreateContextsOffset = 0;
2156 rsp->CreateContextsLength = 0;
2158 inc_rfc1001_len(work->response_buf, 88); /* StructureSize - 1*/
2165 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
2169 rsp->hdr.Status = STATUS_NO_MEMORY;
2176 smb2_set_err_rsp(work);
2181 * smb2_set_ea() - handler for setting extended attributes using set
2183 * @eabuf: set info command buffer
2184 * @buf_len: set info command buffer length
2185 * @path: dentry path for get ea
2187 * Return: 0 on success, otherwise error
2189 static int smb2_set_ea(struct smb2_ea_info *eabuf, unsigned int buf_len,
2190 const struct path *path)
2192 struct mnt_idmap *idmap = mnt_idmap(path->mnt);
2193 char *attr_name = NULL, *value;
2195 unsigned int next = 0;
2197 if (buf_len < sizeof(struct smb2_ea_info) + eabuf->EaNameLength +
2198 le16_to_cpu(eabuf->EaValueLength))
2201 attr_name = kmalloc(XATTR_NAME_MAX + 1, GFP_KERNEL);
2206 if (!eabuf->EaNameLength)
2210 "name : <%s>, name_len : %u, value_len : %u, next : %u\n",
2211 eabuf->name, eabuf->EaNameLength,
2212 le16_to_cpu(eabuf->EaValueLength),
2213 le32_to_cpu(eabuf->NextEntryOffset));
2215 if (eabuf->EaNameLength >
2216 (XATTR_NAME_MAX - XATTR_USER_PREFIX_LEN)) {
2221 memcpy(attr_name, XATTR_USER_PREFIX, XATTR_USER_PREFIX_LEN);
2222 memcpy(&attr_name[XATTR_USER_PREFIX_LEN], eabuf->name,
2223 eabuf->EaNameLength);
2224 attr_name[XATTR_USER_PREFIX_LEN + eabuf->EaNameLength] = '\0';
2225 value = (char *)&eabuf->name + eabuf->EaNameLength + 1;
2227 if (!eabuf->EaValueLength) {
2228 rc = ksmbd_vfs_casexattr_len(idmap,
2231 XATTR_USER_PREFIX_LEN +
2232 eabuf->EaNameLength);
2234 /* delete the EA only when it exits */
2236 rc = ksmbd_vfs_remove_xattr(idmap,
2242 "remove xattr failed(%d)\n",
2248 /* if the EA doesn't exist, just do nothing. */
2251 rc = ksmbd_vfs_setxattr(idmap,
2252 path->dentry, attr_name, value,
2253 le16_to_cpu(eabuf->EaValueLength), 0);
2256 "ksmbd_vfs_setxattr is failed(%d)\n",
2263 next = le32_to_cpu(eabuf->NextEntryOffset);
2264 if (next == 0 || buf_len < next)
2267 eabuf = (struct smb2_ea_info *)((char *)eabuf + next);
2268 if (next < (u32)eabuf->EaNameLength + le16_to_cpu(eabuf->EaValueLength))
2271 } while (next != 0);
2277 static noinline int smb2_set_stream_name_xattr(const struct path *path,
2278 struct ksmbd_file *fp,
2279 char *stream_name, int s_type)
2281 struct mnt_idmap *idmap = mnt_idmap(path->mnt);
2282 size_t xattr_stream_size;
2283 char *xattr_stream_name;
2286 rc = ksmbd_vfs_xattr_stream_name(stream_name,
2293 fp->stream.name = xattr_stream_name;
2294 fp->stream.size = xattr_stream_size;
2296 /* Check if there is stream prefix in xattr space */
2297 rc = ksmbd_vfs_casexattr_len(idmap,
2304 if (fp->cdoption == FILE_OPEN_LE) {
2305 ksmbd_debug(SMB, "XATTR stream name lookup failed: %d\n", rc);
2309 rc = ksmbd_vfs_setxattr(idmap, path->dentry,
2310 xattr_stream_name, NULL, 0, 0);
2312 pr_err("Failed to store XATTR stream name :%d\n", rc);
2316 static int smb2_remove_smb_xattrs(const struct path *path)
2318 struct mnt_idmap *idmap = mnt_idmap(path->mnt);
2319 char *name, *xattr_list = NULL;
2320 ssize_t xattr_list_len;
2323 xattr_list_len = ksmbd_vfs_listxattr(path->dentry, &xattr_list);
2324 if (xattr_list_len < 0) {
2326 } else if (!xattr_list_len) {
2327 ksmbd_debug(SMB, "empty xattr in the file\n");
2331 for (name = xattr_list; name - xattr_list < xattr_list_len;
2332 name += strlen(name) + 1) {
2333 ksmbd_debug(SMB, "%s, len %zd\n", name, strlen(name));
2335 if (!strncmp(name, XATTR_USER_PREFIX, XATTR_USER_PREFIX_LEN) &&
2336 !strncmp(&name[XATTR_USER_PREFIX_LEN], STREAM_PREFIX,
2337 STREAM_PREFIX_LEN)) {
2338 err = ksmbd_vfs_remove_xattr(idmap, path->dentry,
2341 ksmbd_debug(SMB, "remove xattr failed : %s\n",
2350 static int smb2_create_truncate(const struct path *path)
2352 int rc = vfs_truncate(path, 0);
2355 pr_err("vfs_truncate failed, rc %d\n", rc);
2359 rc = smb2_remove_smb_xattrs(path);
2360 if (rc == -EOPNOTSUPP)
2364 "ksmbd_truncate_stream_name_xattr failed, rc %d\n",
2369 static void smb2_new_xattrs(struct ksmbd_tree_connect *tcon, const struct path *path,
2370 struct ksmbd_file *fp)
2372 struct xattr_dos_attrib da = {0};
2375 if (!test_share_config_flag(tcon->share_conf,
2376 KSMBD_SHARE_FLAG_STORE_DOS_ATTRS))
2380 da.attr = le32_to_cpu(fp->f_ci->m_fattr);
2381 da.itime = da.create_time = fp->create_time;
2382 da.flags = XATTR_DOSINFO_ATTRIB | XATTR_DOSINFO_CREATE_TIME |
2383 XATTR_DOSINFO_ITIME;
2385 rc = ksmbd_vfs_set_dos_attrib_xattr(mnt_idmap(path->mnt),
2388 ksmbd_debug(SMB, "failed to store file attribute into xattr\n");
2391 static void smb2_update_xattrs(struct ksmbd_tree_connect *tcon,
2392 const struct path *path, struct ksmbd_file *fp)
2394 struct xattr_dos_attrib da;
2397 fp->f_ci->m_fattr &= ~(FILE_ATTRIBUTE_HIDDEN_LE | FILE_ATTRIBUTE_SYSTEM_LE);
2399 /* get FileAttributes from XATTR_NAME_DOS_ATTRIBUTE */
2400 if (!test_share_config_flag(tcon->share_conf,
2401 KSMBD_SHARE_FLAG_STORE_DOS_ATTRS))
2404 rc = ksmbd_vfs_get_dos_attrib_xattr(mnt_idmap(path->mnt),
2407 fp->f_ci->m_fattr = cpu_to_le32(da.attr);
2408 fp->create_time = da.create_time;
2409 fp->itime = da.itime;
2413 static int smb2_creat(struct ksmbd_work *work, struct path *path, char *name,
2414 int open_flags, umode_t posix_mode, bool is_dir)
2416 struct ksmbd_tree_connect *tcon = work->tcon;
2417 struct ksmbd_share_config *share = tcon->share_conf;
2421 if (!(open_flags & O_CREAT))
2424 ksmbd_debug(SMB, "file does not exist, so creating\n");
2425 if (is_dir == true) {
2426 ksmbd_debug(SMB, "creating directory\n");
2428 mode = share_config_directory_mode(share, posix_mode);
2429 rc = ksmbd_vfs_mkdir(work, name, mode);
2433 ksmbd_debug(SMB, "creating regular file\n");
2435 mode = share_config_create_mode(share, posix_mode);
2436 rc = ksmbd_vfs_create(work, name, mode);
2441 rc = ksmbd_vfs_kern_path(work, name, 0, path, 0);
2443 pr_err("cannot get linux path (%s), err = %d\n",
2450 static int smb2_create_sd_buffer(struct ksmbd_work *work,
2451 struct smb2_create_req *req,
2452 const struct path *path)
2454 struct create_context *context;
2455 struct create_sd_buf_req *sd_buf;
2457 if (!req->CreateContextsOffset)
2460 /* Parse SD BUFFER create contexts */
2461 context = smb2_find_context_vals(req, SMB2_CREATE_SD_BUFFER);
2464 else if (IS_ERR(context))
2465 return PTR_ERR(context);
2468 "Set ACLs using SMB2_CREATE_SD_BUFFER context\n");
2469 sd_buf = (struct create_sd_buf_req *)context;
2470 if (le16_to_cpu(context->DataOffset) +
2471 le32_to_cpu(context->DataLength) <
2472 sizeof(struct create_sd_buf_req))
2474 return set_info_sec(work->conn, work->tcon, path, &sd_buf->ntsd,
2475 le32_to_cpu(sd_buf->ccontext.DataLength), true);
2478 static void ksmbd_acls_fattr(struct smb_fattr *fattr,
2479 struct user_namespace *mnt_userns,
2480 struct inode *inode)
2482 vfsuid_t vfsuid = i_uid_into_vfsuid(mnt_userns, inode);
2483 vfsgid_t vfsgid = i_gid_into_vfsgid(mnt_userns, inode);
2485 fattr->cf_uid = vfsuid_into_kuid(vfsuid);
2486 fattr->cf_gid = vfsgid_into_kgid(vfsgid);
2487 fattr->cf_mode = inode->i_mode;
2488 fattr->cf_acls = NULL;
2489 fattr->cf_dacls = NULL;
2491 if (IS_ENABLED(CONFIG_FS_POSIX_ACL)) {
2492 fattr->cf_acls = get_inode_acl(inode, ACL_TYPE_ACCESS);
2493 if (S_ISDIR(inode->i_mode))
2494 fattr->cf_dacls = get_inode_acl(inode, ACL_TYPE_DEFAULT);
2499 * smb2_open() - handler for smb file open request
2500 * @work: smb work containing request buffer
2502 * Return: 0 on success, otherwise error
2504 int smb2_open(struct ksmbd_work *work)
2506 struct ksmbd_conn *conn = work->conn;
2507 struct ksmbd_session *sess = work->sess;
2508 struct ksmbd_tree_connect *tcon = work->tcon;
2509 struct smb2_create_req *req;
2510 struct smb2_create_rsp *rsp;
2512 struct ksmbd_share_config *share = tcon->share_conf;
2513 struct ksmbd_file *fp = NULL;
2514 struct file *filp = NULL;
2515 struct mnt_idmap *idmap = NULL;
2516 struct user_namespace *user_ns = NULL;
2518 struct create_context *context;
2519 struct lease_ctx_info *lc = NULL;
2520 struct create_ea_buf_req *ea_buf = NULL;
2521 struct oplock_info *opinfo;
2522 __le32 *next_ptr = NULL;
2523 int req_op_level = 0, open_flags = 0, may_flags = 0, file_info = 0;
2525 int contxt_cnt = 0, query_disk_id = 0;
2526 int maximal_access_ctxt = 0, posix_ctxt = 0;
2530 char *stream_name = NULL;
2531 bool file_present = false, created = false, already_permitted = false;
2532 int share_ret, need_truncate = 0;
2534 umode_t posix_mode = 0;
2535 __le32 daccess, maximal_access = 0;
2537 WORK_BUFFERS(work, req, rsp);
2539 if (req->hdr.NextCommand && !work->next_smb2_rcv_hdr_off &&
2540 (req->hdr.Flags & SMB2_FLAGS_RELATED_OPERATIONS)) {
2541 ksmbd_debug(SMB, "invalid flag in chained command\n");
2542 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
2543 smb2_set_err_rsp(work);
2547 if (test_share_config_flag(share, KSMBD_SHARE_FLAG_PIPE)) {
2548 ksmbd_debug(SMB, "IPC pipe create request\n");
2549 return create_smb2_pipe(work);
2552 if (req->NameLength) {
2553 if ((req->CreateOptions & FILE_DIRECTORY_FILE_LE) &&
2554 *(char *)req->Buffer == '\\') {
2555 pr_err("not allow directory name included leading slash\n");
2560 name = smb2_get_name(req->Buffer,
2561 le16_to_cpu(req->NameLength),
2562 work->conn->local_nls);
2571 ksmbd_debug(SMB, "converted name = %s\n", name);
2572 if (strchr(name, ':')) {
2573 if (!test_share_config_flag(work->tcon->share_conf,
2574 KSMBD_SHARE_FLAG_STREAMS)) {
2578 rc = parse_stream_name(name, &stream_name, &s_type);
2583 rc = ksmbd_validate_filename(name);
2587 if (ksmbd_share_veto_filename(share, name)) {
2589 ksmbd_debug(SMB, "Reject open(), vetoed file: %s\n",
2594 name = kstrdup("", GFP_KERNEL);
2601 req_op_level = req->RequestedOplockLevel;
2602 if (req_op_level == SMB2_OPLOCK_LEVEL_LEASE)
2603 lc = parse_lease_state(req);
2605 if (le32_to_cpu(req->ImpersonationLevel) > le32_to_cpu(IL_DELEGATE)) {
2606 pr_err("Invalid impersonationlevel : 0x%x\n",
2607 le32_to_cpu(req->ImpersonationLevel));
2609 rsp->hdr.Status = STATUS_BAD_IMPERSONATION_LEVEL;
2613 if (req->CreateOptions && !(req->CreateOptions & CREATE_OPTIONS_MASK_LE)) {
2614 pr_err("Invalid create options : 0x%x\n",
2615 le32_to_cpu(req->CreateOptions));
2619 if (req->CreateOptions & FILE_SEQUENTIAL_ONLY_LE &&
2620 req->CreateOptions & FILE_RANDOM_ACCESS_LE)
2621 req->CreateOptions = ~(FILE_SEQUENTIAL_ONLY_LE);
2623 if (req->CreateOptions &
2624 (FILE_OPEN_BY_FILE_ID_LE | CREATE_TREE_CONNECTION |
2625 FILE_RESERVE_OPFILTER_LE)) {
2630 if (req->CreateOptions & FILE_DIRECTORY_FILE_LE) {
2631 if (req->CreateOptions & FILE_NON_DIRECTORY_FILE_LE) {
2634 } else if (req->CreateOptions & FILE_NO_COMPRESSION_LE) {
2635 req->CreateOptions = ~(FILE_NO_COMPRESSION_LE);
2640 if (le32_to_cpu(req->CreateDisposition) >
2641 le32_to_cpu(FILE_OVERWRITE_IF_LE)) {
2642 pr_err("Invalid create disposition : 0x%x\n",
2643 le32_to_cpu(req->CreateDisposition));
2648 if (!(req->DesiredAccess & DESIRED_ACCESS_MASK)) {
2649 pr_err("Invalid desired access : 0x%x\n",
2650 le32_to_cpu(req->DesiredAccess));
2655 if (req->FileAttributes && !(req->FileAttributes & FILE_ATTRIBUTE_MASK_LE)) {
2656 pr_err("Invalid file attribute : 0x%x\n",
2657 le32_to_cpu(req->FileAttributes));
2662 if (req->CreateContextsOffset) {
2663 /* Parse non-durable handle create contexts */
2664 context = smb2_find_context_vals(req, SMB2_CREATE_EA_BUFFER);
2665 if (IS_ERR(context)) {
2666 rc = PTR_ERR(context);
2668 } else if (context) {
2669 ea_buf = (struct create_ea_buf_req *)context;
2670 if (le16_to_cpu(context->DataOffset) +
2671 le32_to_cpu(context->DataLength) <
2672 sizeof(struct create_ea_buf_req)) {
2676 if (req->CreateOptions & FILE_NO_EA_KNOWLEDGE_LE) {
2677 rsp->hdr.Status = STATUS_ACCESS_DENIED;
2683 context = smb2_find_context_vals(req,
2684 SMB2_CREATE_QUERY_MAXIMAL_ACCESS_REQUEST);
2685 if (IS_ERR(context)) {
2686 rc = PTR_ERR(context);
2688 } else if (context) {
2690 "get query maximal access context\n");
2691 maximal_access_ctxt = 1;
2694 context = smb2_find_context_vals(req,
2695 SMB2_CREATE_TIMEWARP_REQUEST);
2696 if (IS_ERR(context)) {
2697 rc = PTR_ERR(context);
2699 } else if (context) {
2700 ksmbd_debug(SMB, "get timewarp context\n");
2705 if (tcon->posix_extensions) {
2706 context = smb2_find_context_vals(req,
2707 SMB2_CREATE_TAG_POSIX);
2708 if (IS_ERR(context)) {
2709 rc = PTR_ERR(context);
2711 } else if (context) {
2712 struct create_posix *posix =
2713 (struct create_posix *)context;
2714 if (le16_to_cpu(context->DataOffset) +
2715 le32_to_cpu(context->DataLength) <
2716 sizeof(struct create_posix) - 4) {
2720 ksmbd_debug(SMB, "get posix context\n");
2722 posix_mode = le32_to_cpu(posix->Mode);
2728 if (ksmbd_override_fsids(work)) {
2733 rc = ksmbd_vfs_kern_path(work, name, LOOKUP_NO_SYMLINKS, &path, 1);
2735 if (req->CreateOptions & FILE_DELETE_ON_CLOSE_LE) {
2737 * If file exists with under flags, return access
2740 if (req->CreateDisposition == FILE_OVERWRITE_IF_LE ||
2741 req->CreateDisposition == FILE_OPEN_IF_LE) {
2747 if (!test_tree_conn_flag(tcon, KSMBD_TREE_CONN_FLAG_WRITABLE)) {
2749 "User does not have write permission\n");
2754 } else if (d_is_symlink(path.dentry)) {
2764 ksmbd_debug(SMB, "can not get linux path for %s, rc = %d\n",
2768 file_present = true;
2769 idmap = mnt_idmap(path.mnt);
2770 user_ns = mnt_idmap_owner(idmap);
2773 if (req->CreateOptions & FILE_DIRECTORY_FILE_LE) {
2774 if (s_type == DATA_STREAM) {
2776 rsp->hdr.Status = STATUS_NOT_A_DIRECTORY;
2779 if (file_present && S_ISDIR(d_inode(path.dentry)->i_mode) &&
2780 s_type == DATA_STREAM) {
2782 rsp->hdr.Status = STATUS_FILE_IS_A_DIRECTORY;
2786 if (req->CreateOptions & FILE_DIRECTORY_FILE_LE &&
2787 req->FileAttributes & FILE_ATTRIBUTE_NORMAL_LE) {
2788 rsp->hdr.Status = STATUS_NOT_A_DIRECTORY;
2796 if (file_present && req->CreateOptions & FILE_NON_DIRECTORY_FILE_LE &&
2797 S_ISDIR(d_inode(path.dentry)->i_mode) &&
2798 !(req->CreateOptions & FILE_DELETE_ON_CLOSE_LE)) {
2799 ksmbd_debug(SMB, "open() argument is a directory: %s, %x\n",
2800 name, req->CreateOptions);
2801 rsp->hdr.Status = STATUS_FILE_IS_A_DIRECTORY;
2806 if (file_present && (req->CreateOptions & FILE_DIRECTORY_FILE_LE) &&
2807 !(req->CreateDisposition == FILE_CREATE_LE) &&
2808 !S_ISDIR(d_inode(path.dentry)->i_mode)) {
2809 rsp->hdr.Status = STATUS_NOT_A_DIRECTORY;
2814 if (!stream_name && file_present &&
2815 req->CreateDisposition == FILE_CREATE_LE) {
2820 daccess = smb_map_generic_desired_access(req->DesiredAccess);
2822 if (file_present && !(req->CreateOptions & FILE_DELETE_ON_CLOSE_LE)) {
2823 rc = smb_check_perm_dacl(conn, &path, &daccess,
2829 if (daccess & FILE_MAXIMAL_ACCESS_LE) {
2830 if (!file_present) {
2831 daccess = cpu_to_le32(GENERIC_ALL_FLAGS);
2833 rc = ksmbd_vfs_query_maximal_access(idmap,
2838 already_permitted = true;
2840 maximal_access = daccess;
2843 open_flags = smb2_create_open_flags(file_present, daccess,
2844 req->CreateDisposition,
2847 if (!test_tree_conn_flag(tcon, KSMBD_TREE_CONN_FLAG_WRITABLE)) {
2848 if (open_flags & O_CREAT) {
2850 "User does not have write permission\n");
2856 /*create file if not present */
2857 if (!file_present) {
2858 rc = smb2_creat(work, &path, name, open_flags, posix_mode,
2859 req->CreateOptions & FILE_DIRECTORY_FILE_LE);
2861 if (rc == -ENOENT) {
2863 rsp->hdr.Status = STATUS_OBJECT_PATH_NOT_FOUND;
2869 idmap = mnt_idmap(path.mnt);
2870 user_ns = mnt_idmap_owner(idmap);
2872 if (le32_to_cpu(ea_buf->ccontext.DataLength) <
2873 sizeof(struct smb2_ea_info)) {
2878 rc = smb2_set_ea(&ea_buf->ea,
2879 le32_to_cpu(ea_buf->ccontext.DataLength),
2881 if (rc == -EOPNOTSUPP)
2886 } else if (!already_permitted) {
2887 /* FILE_READ_ATTRIBUTE is allowed without inode_permission,
2888 * because execute(search) permission on a parent directory,
2889 * is already granted.
2891 if (daccess & ~(FILE_READ_ATTRIBUTES_LE | FILE_READ_CONTROL_LE)) {
2892 rc = inode_permission(idmap,
2893 d_inode(path.dentry),
2898 if ((daccess & FILE_DELETE_LE) ||
2899 (req->CreateOptions & FILE_DELETE_ON_CLOSE_LE)) {
2900 rc = ksmbd_vfs_may_delete(idmap,
2908 rc = ksmbd_query_inode_status(d_inode(path.dentry->d_parent));
2909 if (rc == KSMBD_INODE_STATUS_PENDING_DELETE) {
2915 filp = dentry_open(&path, open_flags, current_cred());
2918 pr_err("dentry open for dir failed, rc %d\n", rc);
2923 if (!(open_flags & O_TRUNC))
2924 file_info = FILE_OPENED;
2926 file_info = FILE_OVERWRITTEN;
2928 if ((req->CreateDisposition & FILE_CREATE_MASK_LE) ==
2930 file_info = FILE_SUPERSEDED;
2931 } else if (open_flags & O_CREAT) {
2932 file_info = FILE_CREATED;
2935 ksmbd_vfs_set_fadvise(filp, req->CreateOptions);
2937 /* Obtain Volatile-ID */
2938 fp = ksmbd_open_fd(work, filp);
2946 /* Get Persistent-ID */
2947 ksmbd_open_durable_fd(fp);
2948 if (!has_file_id(fp->persistent_id)) {
2953 fp->cdoption = req->CreateDisposition;
2954 fp->daccess = daccess;
2955 fp->saccess = req->ShareAccess;
2956 fp->coption = req->CreateOptions;
2958 /* Set default windows and posix acls if creating new file */
2961 struct inode *inode = d_inode(path.dentry);
2963 posix_acl_rc = ksmbd_vfs_inherit_posix_acl(idmap,
2965 d_inode(path.dentry->d_parent));
2967 ksmbd_debug(SMB, "inherit posix acl failed : %d\n", posix_acl_rc);
2969 if (test_share_config_flag(work->tcon->share_conf,
2970 KSMBD_SHARE_FLAG_ACL_XATTR)) {
2971 rc = smb_inherit_dacl(conn, &path, sess->user->uid,
2976 rc = smb2_create_sd_buffer(work, req, &path);
2979 ksmbd_vfs_set_init_posix_acl(idmap,
2982 if (test_share_config_flag(work->tcon->share_conf,
2983 KSMBD_SHARE_FLAG_ACL_XATTR)) {
2984 struct smb_fattr fattr;
2985 struct smb_ntsd *pntsd;
2986 int pntsd_size, ace_num = 0;
2988 ksmbd_acls_fattr(&fattr, user_ns, inode);
2990 ace_num = fattr.cf_acls->a_count;
2992 ace_num += fattr.cf_dacls->a_count;
2994 pntsd = kmalloc(sizeof(struct smb_ntsd) +
2995 sizeof(struct smb_sid) * 3 +
2996 sizeof(struct smb_acl) +
2997 sizeof(struct smb_ace) * ace_num * 2,
3002 rc = build_sec_desc(user_ns,
3007 &pntsd_size, &fattr);
3008 posix_acl_release(fattr.cf_acls);
3009 posix_acl_release(fattr.cf_dacls);
3015 rc = ksmbd_vfs_set_sd_xattr(conn,
3022 pr_err("failed to store ntacl in xattr : %d\n",
3031 rc = smb2_set_stream_name_xattr(&path,
3037 file_info = FILE_CREATED;
3040 fp->attrib_only = !(req->DesiredAccess & ~(FILE_READ_ATTRIBUTES_LE |
3041 FILE_WRITE_ATTRIBUTES_LE | FILE_SYNCHRONIZE_LE));
3042 if (!S_ISDIR(file_inode(filp)->i_mode) && open_flags & O_TRUNC &&
3043 !fp->attrib_only && !stream_name) {
3044 smb_break_all_oplock(work, fp);
3048 /* fp should be searchable through ksmbd_inode.m_fp_list
3049 * after daccess, saccess, attrib_only, and stream are
3052 write_lock(&fp->f_ci->m_lock);
3053 list_add(&fp->node, &fp->f_ci->m_fp_list);
3054 write_unlock(&fp->f_ci->m_lock);
3056 /* Check delete pending among previous fp before oplock break */
3057 if (ksmbd_inode_pending_delete(fp)) {
3062 share_ret = ksmbd_smb_check_shared_mode(fp->filp, fp);
3063 if (!test_share_config_flag(work->tcon->share_conf, KSMBD_SHARE_FLAG_OPLOCKS) ||
3064 (req_op_level == SMB2_OPLOCK_LEVEL_LEASE &&
3065 !(conn->vals->capabilities & SMB2_GLOBAL_CAP_LEASING))) {
3066 if (share_ret < 0 && !S_ISDIR(file_inode(fp->filp)->i_mode)) {
3071 if (req_op_level == SMB2_OPLOCK_LEVEL_LEASE) {
3072 req_op_level = smb2_map_lease_to_oplock(lc->req_state);
3074 "lease req for(%s) req oplock state 0x%x, lease state 0x%x\n",
3075 name, req_op_level, lc->req_state);
3076 rc = find_same_lease_key(sess, fp->f_ci, lc);
3079 } else if (open_flags == O_RDONLY &&
3080 (req_op_level == SMB2_OPLOCK_LEVEL_BATCH ||
3081 req_op_level == SMB2_OPLOCK_LEVEL_EXCLUSIVE))
3082 req_op_level = SMB2_OPLOCK_LEVEL_II;
3084 rc = smb_grant_oplock(work, req_op_level,
3085 fp->persistent_id, fp,
3086 le32_to_cpu(req->hdr.Id.SyncId.TreeId),
3092 if (req->CreateOptions & FILE_DELETE_ON_CLOSE_LE)
3093 ksmbd_fd_set_delete_on_close(fp, file_info);
3095 if (need_truncate) {
3096 rc = smb2_create_truncate(&path);
3101 if (req->CreateContextsOffset) {
3102 struct create_alloc_size_req *az_req;
3104 az_req = (struct create_alloc_size_req *)smb2_find_context_vals(req,
3105 SMB2_CREATE_ALLOCATION_SIZE);
3106 if (IS_ERR(az_req)) {
3107 rc = PTR_ERR(az_req);
3109 } else if (az_req) {
3113 if (le16_to_cpu(az_req->ccontext.DataOffset) +
3114 le32_to_cpu(az_req->ccontext.DataLength) <
3115 sizeof(struct create_alloc_size_req)) {
3119 alloc_size = le64_to_cpu(az_req->AllocationSize);
3121 "request smb2 create allocate size : %llu\n",
3123 smb_break_all_levII_oplock(work, fp, 1);
3124 err = vfs_fallocate(fp->filp, FALLOC_FL_KEEP_SIZE, 0,
3128 "vfs_fallocate is failed : %d\n",
3132 context = smb2_find_context_vals(req, SMB2_CREATE_QUERY_ON_DISK_ID);
3133 if (IS_ERR(context)) {
3134 rc = PTR_ERR(context);
3136 } else if (context) {
3137 ksmbd_debug(SMB, "get query on disk id context\n");
3142 rc = ksmbd_vfs_getattr(&path, &stat);
3146 if (stat.result_mask & STATX_BTIME)
3147 fp->create_time = ksmbd_UnixTimeToNT(stat.btime);
3149 fp->create_time = ksmbd_UnixTimeToNT(stat.ctime);
3150 if (req->FileAttributes || fp->f_ci->m_fattr == 0)
3152 cpu_to_le32(smb2_get_dos_mode(&stat, le32_to_cpu(req->FileAttributes)));
3155 smb2_update_xattrs(tcon, &path, fp);
3157 smb2_new_xattrs(tcon, &path, fp);
3159 memcpy(fp->client_guid, conn->ClientGUID, SMB2_CLIENT_GUID_SIZE);
3161 rsp->StructureSize = cpu_to_le16(89);
3163 opinfo = rcu_dereference(fp->f_opinfo);
3164 rsp->OplockLevel = opinfo != NULL ? opinfo->level : 0;
3167 rsp->CreateAction = cpu_to_le32(file_info);
3168 rsp->CreationTime = cpu_to_le64(fp->create_time);
3169 time = ksmbd_UnixTimeToNT(stat.atime);
3170 rsp->LastAccessTime = cpu_to_le64(time);
3171 time = ksmbd_UnixTimeToNT(stat.mtime);
3172 rsp->LastWriteTime = cpu_to_le64(time);
3173 time = ksmbd_UnixTimeToNT(stat.ctime);
3174 rsp->ChangeTime = cpu_to_le64(time);
3175 rsp->AllocationSize = S_ISDIR(stat.mode) ? 0 :
3176 cpu_to_le64(stat.blocks << 9);
3177 rsp->EndofFile = S_ISDIR(stat.mode) ? 0 : cpu_to_le64(stat.size);
3178 rsp->FileAttributes = fp->f_ci->m_fattr;
3182 rsp->PersistentFileId = fp->persistent_id;
3183 rsp->VolatileFileId = fp->volatile_id;
3185 rsp->CreateContextsOffset = 0;
3186 rsp->CreateContextsLength = 0;
3187 inc_rfc1001_len(work->response_buf, 88); /* StructureSize - 1*/
3189 /* If lease is request send lease context response */
3190 if (opinfo && opinfo->is_lease) {
3191 struct create_context *lease_ccontext;
3193 ksmbd_debug(SMB, "lease granted on(%s) lease state 0x%x\n",
3194 name, opinfo->o_lease->state);
3195 rsp->OplockLevel = SMB2_OPLOCK_LEVEL_LEASE;
3197 lease_ccontext = (struct create_context *)rsp->Buffer;
3199 create_lease_buf(rsp->Buffer, opinfo->o_lease);
3200 le32_add_cpu(&rsp->CreateContextsLength,
3201 conn->vals->create_lease_size);
3202 inc_rfc1001_len(work->response_buf,
3203 conn->vals->create_lease_size);
3204 next_ptr = &lease_ccontext->Next;
3205 next_off = conn->vals->create_lease_size;
3208 if (maximal_access_ctxt) {
3209 struct create_context *mxac_ccontext;
3211 if (maximal_access == 0)
3212 ksmbd_vfs_query_maximal_access(idmap,
3215 mxac_ccontext = (struct create_context *)(rsp->Buffer +
3216 le32_to_cpu(rsp->CreateContextsLength));
3218 create_mxac_rsp_buf(rsp->Buffer +
3219 le32_to_cpu(rsp->CreateContextsLength),
3220 le32_to_cpu(maximal_access));
3221 le32_add_cpu(&rsp->CreateContextsLength,
3222 conn->vals->create_mxac_size);
3223 inc_rfc1001_len(work->response_buf,
3224 conn->vals->create_mxac_size);
3226 *next_ptr = cpu_to_le32(next_off);
3227 next_ptr = &mxac_ccontext->Next;
3228 next_off = conn->vals->create_mxac_size;
3231 if (query_disk_id) {
3232 struct create_context *disk_id_ccontext;
3234 disk_id_ccontext = (struct create_context *)(rsp->Buffer +
3235 le32_to_cpu(rsp->CreateContextsLength));
3237 create_disk_id_rsp_buf(rsp->Buffer +
3238 le32_to_cpu(rsp->CreateContextsLength),
3239 stat.ino, tcon->id);
3240 le32_add_cpu(&rsp->CreateContextsLength,
3241 conn->vals->create_disk_id_size);
3242 inc_rfc1001_len(work->response_buf,
3243 conn->vals->create_disk_id_size);
3245 *next_ptr = cpu_to_le32(next_off);
3246 next_ptr = &disk_id_ccontext->Next;
3247 next_off = conn->vals->create_disk_id_size;
3252 create_posix_rsp_buf(rsp->Buffer +
3253 le32_to_cpu(rsp->CreateContextsLength),
3255 le32_add_cpu(&rsp->CreateContextsLength,
3256 conn->vals->create_posix_size);
3257 inc_rfc1001_len(work->response_buf,
3258 conn->vals->create_posix_size);
3260 *next_ptr = cpu_to_le32(next_off);
3263 if (contxt_cnt > 0) {
3264 rsp->CreateContextsOffset =
3265 cpu_to_le32(offsetof(struct smb2_create_rsp, Buffer));
3269 if (file_present || created)
3271 ksmbd_revert_fsids(work);
3275 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
3276 else if (rc == -EOPNOTSUPP)
3277 rsp->hdr.Status = STATUS_NOT_SUPPORTED;
3278 else if (rc == -EACCES || rc == -ESTALE || rc == -EXDEV)
3279 rsp->hdr.Status = STATUS_ACCESS_DENIED;
3280 else if (rc == -ENOENT)
3281 rsp->hdr.Status = STATUS_OBJECT_NAME_INVALID;
3282 else if (rc == -EPERM)
3283 rsp->hdr.Status = STATUS_SHARING_VIOLATION;
3284 else if (rc == -EBUSY)
3285 rsp->hdr.Status = STATUS_DELETE_PENDING;
3286 else if (rc == -EBADF)
3287 rsp->hdr.Status = STATUS_OBJECT_NAME_NOT_FOUND;
3288 else if (rc == -ENOEXEC)
3289 rsp->hdr.Status = STATUS_DUPLICATE_OBJECTID;
3290 else if (rc == -ENXIO)
3291 rsp->hdr.Status = STATUS_NO_SUCH_DEVICE;
3292 else if (rc == -EEXIST)
3293 rsp->hdr.Status = STATUS_OBJECT_NAME_COLLISION;
3294 else if (rc == -EMFILE)
3295 rsp->hdr.Status = STATUS_INSUFFICIENT_RESOURCES;
3296 if (!rsp->hdr.Status)
3297 rsp->hdr.Status = STATUS_UNEXPECTED_IO_ERROR;
3300 ksmbd_fd_put(work, fp);
3301 smb2_set_err_rsp(work);
3302 ksmbd_debug(SMB, "Error response: %x\n", rsp->hdr.Status);
3311 static int readdir_info_level_struct_sz(int info_level)
3313 switch (info_level) {
3314 case FILE_FULL_DIRECTORY_INFORMATION:
3315 return sizeof(struct file_full_directory_info);
3316 case FILE_BOTH_DIRECTORY_INFORMATION:
3317 return sizeof(struct file_both_directory_info);
3318 case FILE_DIRECTORY_INFORMATION:
3319 return sizeof(struct file_directory_info);
3320 case FILE_NAMES_INFORMATION:
3321 return sizeof(struct file_names_info);
3322 case FILEID_FULL_DIRECTORY_INFORMATION:
3323 return sizeof(struct file_id_full_dir_info);
3324 case FILEID_BOTH_DIRECTORY_INFORMATION:
3325 return sizeof(struct file_id_both_directory_info);
3326 case SMB_FIND_FILE_POSIX_INFO:
3327 return sizeof(struct smb2_posix_info);
3333 static int dentry_name(struct ksmbd_dir_info *d_info, int info_level)
3335 switch (info_level) {
3336 case FILE_FULL_DIRECTORY_INFORMATION:
3338 struct file_full_directory_info *ffdinfo;
3340 ffdinfo = (struct file_full_directory_info *)d_info->rptr;
3341 d_info->rptr += le32_to_cpu(ffdinfo->NextEntryOffset);
3342 d_info->name = ffdinfo->FileName;
3343 d_info->name_len = le32_to_cpu(ffdinfo->FileNameLength);
3346 case FILE_BOTH_DIRECTORY_INFORMATION:
3348 struct file_both_directory_info *fbdinfo;
3350 fbdinfo = (struct file_both_directory_info *)d_info->rptr;
3351 d_info->rptr += le32_to_cpu(fbdinfo->NextEntryOffset);
3352 d_info->name = fbdinfo->FileName;
3353 d_info->name_len = le32_to_cpu(fbdinfo->FileNameLength);
3356 case FILE_DIRECTORY_INFORMATION:
3358 struct file_directory_info *fdinfo;
3360 fdinfo = (struct file_directory_info *)d_info->rptr;
3361 d_info->rptr += le32_to_cpu(fdinfo->NextEntryOffset);
3362 d_info->name = fdinfo->FileName;
3363 d_info->name_len = le32_to_cpu(fdinfo->FileNameLength);
3366 case FILE_NAMES_INFORMATION:
3368 struct file_names_info *fninfo;
3370 fninfo = (struct file_names_info *)d_info->rptr;
3371 d_info->rptr += le32_to_cpu(fninfo->NextEntryOffset);
3372 d_info->name = fninfo->FileName;
3373 d_info->name_len = le32_to_cpu(fninfo->FileNameLength);
3376 case FILEID_FULL_DIRECTORY_INFORMATION:
3378 struct file_id_full_dir_info *dinfo;
3380 dinfo = (struct file_id_full_dir_info *)d_info->rptr;
3381 d_info->rptr += le32_to_cpu(dinfo->NextEntryOffset);
3382 d_info->name = dinfo->FileName;
3383 d_info->name_len = le32_to_cpu(dinfo->FileNameLength);
3386 case FILEID_BOTH_DIRECTORY_INFORMATION:
3388 struct file_id_both_directory_info *fibdinfo;
3390 fibdinfo = (struct file_id_both_directory_info *)d_info->rptr;
3391 d_info->rptr += le32_to_cpu(fibdinfo->NextEntryOffset);
3392 d_info->name = fibdinfo->FileName;
3393 d_info->name_len = le32_to_cpu(fibdinfo->FileNameLength);
3396 case SMB_FIND_FILE_POSIX_INFO:
3398 struct smb2_posix_info *posix_info;
3400 posix_info = (struct smb2_posix_info *)d_info->rptr;
3401 d_info->rptr += le32_to_cpu(posix_info->NextEntryOffset);
3402 d_info->name = posix_info->name;
3403 d_info->name_len = le32_to_cpu(posix_info->name_len);
3412 * smb2_populate_readdir_entry() - encode directory entry in smb2 response
3414 * @conn: connection instance
3415 * @info_level: smb information level
3416 * @d_info: structure included variables for query dir
3417 * @ksmbd_kstat: ksmbd wrapper of dirent stat information
3419 * if directory has many entries, find first can't read it fully.
3420 * find next might be called multiple times to read remaining dir entries
3422 * Return: 0 on success, otherwise error
3424 static int smb2_populate_readdir_entry(struct ksmbd_conn *conn, int info_level,
3425 struct ksmbd_dir_info *d_info,
3426 struct ksmbd_kstat *ksmbd_kstat)
3428 int next_entry_offset = 0;
3432 int struct_sz, rc = 0;
3434 conv_name = ksmbd_convert_dir_info_name(d_info,
3440 /* Somehow the name has only terminating NULL bytes */
3443 goto free_conv_name;
3446 struct_sz = readdir_info_level_struct_sz(info_level) + conv_len;
3447 next_entry_offset = ALIGN(struct_sz, KSMBD_DIR_INFO_ALIGNMENT);
3448 d_info->last_entry_off_align = next_entry_offset - struct_sz;
3450 if (next_entry_offset > d_info->out_buf_len) {
3451 d_info->out_buf_len = 0;
3453 goto free_conv_name;
3456 kstat = d_info->wptr;
3457 if (info_level != FILE_NAMES_INFORMATION)
3458 kstat = ksmbd_vfs_init_kstat(&d_info->wptr, ksmbd_kstat);
3460 switch (info_level) {
3461 case FILE_FULL_DIRECTORY_INFORMATION:
3463 struct file_full_directory_info *ffdinfo;
3465 ffdinfo = (struct file_full_directory_info *)kstat;
3466 ffdinfo->FileNameLength = cpu_to_le32(conv_len);
3468 smb2_get_reparse_tag_special_file(ksmbd_kstat->kstat->mode);
3469 if (ffdinfo->EaSize)
3470 ffdinfo->ExtFileAttributes = FILE_ATTRIBUTE_REPARSE_POINT_LE;
3471 if (d_info->hide_dot_file && d_info->name[0] == '.')
3472 ffdinfo->ExtFileAttributes |= FILE_ATTRIBUTE_HIDDEN_LE;
3473 memcpy(ffdinfo->FileName, conv_name, conv_len);
3474 ffdinfo->NextEntryOffset = cpu_to_le32(next_entry_offset);
3477 case FILE_BOTH_DIRECTORY_INFORMATION:
3479 struct file_both_directory_info *fbdinfo;
3481 fbdinfo = (struct file_both_directory_info *)kstat;
3482 fbdinfo->FileNameLength = cpu_to_le32(conv_len);
3484 smb2_get_reparse_tag_special_file(ksmbd_kstat->kstat->mode);
3485 if (fbdinfo->EaSize)
3486 fbdinfo->ExtFileAttributes = FILE_ATTRIBUTE_REPARSE_POINT_LE;
3487 fbdinfo->ShortNameLength = 0;
3488 fbdinfo->Reserved = 0;
3489 if (d_info->hide_dot_file && d_info->name[0] == '.')
3490 fbdinfo->ExtFileAttributes |= FILE_ATTRIBUTE_HIDDEN_LE;
3491 memcpy(fbdinfo->FileName, conv_name, conv_len);
3492 fbdinfo->NextEntryOffset = cpu_to_le32(next_entry_offset);
3495 case FILE_DIRECTORY_INFORMATION:
3497 struct file_directory_info *fdinfo;
3499 fdinfo = (struct file_directory_info *)kstat;
3500 fdinfo->FileNameLength = cpu_to_le32(conv_len);
3501 if (d_info->hide_dot_file && d_info->name[0] == '.')
3502 fdinfo->ExtFileAttributes |= FILE_ATTRIBUTE_HIDDEN_LE;
3503 memcpy(fdinfo->FileName, conv_name, conv_len);
3504 fdinfo->NextEntryOffset = cpu_to_le32(next_entry_offset);
3507 case FILE_NAMES_INFORMATION:
3509 struct file_names_info *fninfo;
3511 fninfo = (struct file_names_info *)kstat;
3512 fninfo->FileNameLength = cpu_to_le32(conv_len);
3513 memcpy(fninfo->FileName, conv_name, conv_len);
3514 fninfo->NextEntryOffset = cpu_to_le32(next_entry_offset);
3517 case FILEID_FULL_DIRECTORY_INFORMATION:
3519 struct file_id_full_dir_info *dinfo;
3521 dinfo = (struct file_id_full_dir_info *)kstat;
3522 dinfo->FileNameLength = cpu_to_le32(conv_len);
3524 smb2_get_reparse_tag_special_file(ksmbd_kstat->kstat->mode);
3526 dinfo->ExtFileAttributes = FILE_ATTRIBUTE_REPARSE_POINT_LE;
3527 dinfo->Reserved = 0;
3528 dinfo->UniqueId = cpu_to_le64(ksmbd_kstat->kstat->ino);
3529 if (d_info->hide_dot_file && d_info->name[0] == '.')
3530 dinfo->ExtFileAttributes |= FILE_ATTRIBUTE_HIDDEN_LE;
3531 memcpy(dinfo->FileName, conv_name, conv_len);
3532 dinfo->NextEntryOffset = cpu_to_le32(next_entry_offset);
3535 case FILEID_BOTH_DIRECTORY_INFORMATION:
3537 struct file_id_both_directory_info *fibdinfo;
3539 fibdinfo = (struct file_id_both_directory_info *)kstat;
3540 fibdinfo->FileNameLength = cpu_to_le32(conv_len);
3542 smb2_get_reparse_tag_special_file(ksmbd_kstat->kstat->mode);
3543 if (fibdinfo->EaSize)
3544 fibdinfo->ExtFileAttributes = FILE_ATTRIBUTE_REPARSE_POINT_LE;
3545 fibdinfo->UniqueId = cpu_to_le64(ksmbd_kstat->kstat->ino);
3546 fibdinfo->ShortNameLength = 0;
3547 fibdinfo->Reserved = 0;
3548 fibdinfo->Reserved2 = cpu_to_le16(0);
3549 if (d_info->hide_dot_file && d_info->name[0] == '.')
3550 fibdinfo->ExtFileAttributes |= FILE_ATTRIBUTE_HIDDEN_LE;
3551 memcpy(fibdinfo->FileName, conv_name, conv_len);
3552 fibdinfo->NextEntryOffset = cpu_to_le32(next_entry_offset);
3555 case SMB_FIND_FILE_POSIX_INFO:
3557 struct smb2_posix_info *posix_info;
3560 posix_info = (struct smb2_posix_info *)kstat;
3561 posix_info->Ignored = 0;
3562 posix_info->CreationTime = cpu_to_le64(ksmbd_kstat->create_time);
3563 time = ksmbd_UnixTimeToNT(ksmbd_kstat->kstat->ctime);
3564 posix_info->ChangeTime = cpu_to_le64(time);
3565 time = ksmbd_UnixTimeToNT(ksmbd_kstat->kstat->atime);
3566 posix_info->LastAccessTime = cpu_to_le64(time);
3567 time = ksmbd_UnixTimeToNT(ksmbd_kstat->kstat->mtime);
3568 posix_info->LastWriteTime = cpu_to_le64(time);
3569 posix_info->EndOfFile = cpu_to_le64(ksmbd_kstat->kstat->size);
3570 posix_info->AllocationSize = cpu_to_le64(ksmbd_kstat->kstat->blocks << 9);
3571 posix_info->DeviceId = cpu_to_le32(ksmbd_kstat->kstat->rdev);
3572 posix_info->HardLinks = cpu_to_le32(ksmbd_kstat->kstat->nlink);
3573 posix_info->Mode = cpu_to_le32(ksmbd_kstat->kstat->mode & 0777);
3574 posix_info->Inode = cpu_to_le64(ksmbd_kstat->kstat->ino);
3575 posix_info->DosAttributes =
3576 S_ISDIR(ksmbd_kstat->kstat->mode) ?
3577 FILE_ATTRIBUTE_DIRECTORY_LE : FILE_ATTRIBUTE_ARCHIVE_LE;
3578 if (d_info->hide_dot_file && d_info->name[0] == '.')
3579 posix_info->DosAttributes |= FILE_ATTRIBUTE_HIDDEN_LE;
3581 * SidBuffer(32) contain two sids(Domain sid(16), UNIX group sid(16)).
3582 * UNIX sid(16) = revision(1) + num_subauth(1) + authority(6) +
3583 * sub_auth(4 * 1(num_subauth)) + RID(4).
3585 id_to_sid(from_kuid_munged(&init_user_ns, ksmbd_kstat->kstat->uid),
3586 SIDUNIX_USER, (struct smb_sid *)&posix_info->SidBuffer[0]);
3587 id_to_sid(from_kgid_munged(&init_user_ns, ksmbd_kstat->kstat->gid),
3588 SIDUNIX_GROUP, (struct smb_sid *)&posix_info->SidBuffer[16]);
3589 memcpy(posix_info->name, conv_name, conv_len);
3590 posix_info->name_len = cpu_to_le32(conv_len);
3591 posix_info->NextEntryOffset = cpu_to_le32(next_entry_offset);
3595 } /* switch (info_level) */
3597 d_info->last_entry_offset = d_info->data_count;
3598 d_info->data_count += next_entry_offset;
3599 d_info->out_buf_len -= next_entry_offset;
3600 d_info->wptr += next_entry_offset;
3603 "info_level : %d, buf_len :%d, next_offset : %d, data_count : %d\n",
3604 info_level, d_info->out_buf_len,
3605 next_entry_offset, d_info->data_count);
3612 struct smb2_query_dir_private {
3613 struct ksmbd_work *work;
3614 char *search_pattern;
3615 struct ksmbd_file *dir_fp;
3617 struct ksmbd_dir_info *d_info;
3621 static void lock_dir(struct ksmbd_file *dir_fp)
3623 struct dentry *dir = dir_fp->filp->f_path.dentry;
3625 inode_lock_nested(d_inode(dir), I_MUTEX_PARENT);
3628 static void unlock_dir(struct ksmbd_file *dir_fp)
3630 struct dentry *dir = dir_fp->filp->f_path.dentry;
3632 inode_unlock(d_inode(dir));
3635 static int process_query_dir_entries(struct smb2_query_dir_private *priv)
3637 struct mnt_idmap *idmap = file_mnt_idmap(priv->dir_fp->filp);
3639 struct ksmbd_kstat ksmbd_kstat;
3643 for (i = 0; i < priv->d_info->num_entry; i++) {
3644 struct dentry *dent;
3646 if (dentry_name(priv->d_info, priv->info_level))
3649 lock_dir(priv->dir_fp);
3650 dent = lookup_one(idmap, priv->d_info->name,
3651 priv->dir_fp->filp->f_path.dentry,
3652 priv->d_info->name_len);
3653 unlock_dir(priv->dir_fp);
3656 ksmbd_debug(SMB, "Cannot lookup `%s' [%ld]\n",
3661 if (unlikely(d_is_negative(dent))) {
3663 ksmbd_debug(SMB, "Negative dentry `%s'\n",
3664 priv->d_info->name);
3668 ksmbd_kstat.kstat = &kstat;
3669 if (priv->info_level != FILE_NAMES_INFORMATION)
3670 ksmbd_vfs_fill_dentry_attrs(priv->work,
3675 rc = smb2_populate_readdir_entry(priv->work->conn,
3686 static int reserve_populate_dentry(struct ksmbd_dir_info *d_info,
3691 int next_entry_offset;
3693 struct_sz = readdir_info_level_struct_sz(info_level);
3694 if (struct_sz == -EOPNOTSUPP)
3697 conv_len = (d_info->name_len + 1) * 2;
3698 next_entry_offset = ALIGN(struct_sz + conv_len,
3699 KSMBD_DIR_INFO_ALIGNMENT);
3701 if (next_entry_offset > d_info->out_buf_len) {
3702 d_info->out_buf_len = 0;
3706 switch (info_level) {
3707 case FILE_FULL_DIRECTORY_INFORMATION:
3709 struct file_full_directory_info *ffdinfo;
3711 ffdinfo = (struct file_full_directory_info *)d_info->wptr;
3712 memcpy(ffdinfo->FileName, d_info->name, d_info->name_len);
3713 ffdinfo->FileName[d_info->name_len] = 0x00;
3714 ffdinfo->FileNameLength = cpu_to_le32(d_info->name_len);
3715 ffdinfo->NextEntryOffset = cpu_to_le32(next_entry_offset);
3718 case FILE_BOTH_DIRECTORY_INFORMATION:
3720 struct file_both_directory_info *fbdinfo;
3722 fbdinfo = (struct file_both_directory_info *)d_info->wptr;
3723 memcpy(fbdinfo->FileName, d_info->name, d_info->name_len);
3724 fbdinfo->FileName[d_info->name_len] = 0x00;
3725 fbdinfo->FileNameLength = cpu_to_le32(d_info->name_len);
3726 fbdinfo->NextEntryOffset = cpu_to_le32(next_entry_offset);
3729 case FILE_DIRECTORY_INFORMATION:
3731 struct file_directory_info *fdinfo;
3733 fdinfo = (struct file_directory_info *)d_info->wptr;
3734 memcpy(fdinfo->FileName, d_info->name, d_info->name_len);
3735 fdinfo->FileName[d_info->name_len] = 0x00;
3736 fdinfo->FileNameLength = cpu_to_le32(d_info->name_len);
3737 fdinfo->NextEntryOffset = cpu_to_le32(next_entry_offset);
3740 case FILE_NAMES_INFORMATION:
3742 struct file_names_info *fninfo;
3744 fninfo = (struct file_names_info *)d_info->wptr;
3745 memcpy(fninfo->FileName, d_info->name, d_info->name_len);
3746 fninfo->FileName[d_info->name_len] = 0x00;
3747 fninfo->FileNameLength = cpu_to_le32(d_info->name_len);
3748 fninfo->NextEntryOffset = cpu_to_le32(next_entry_offset);
3751 case FILEID_FULL_DIRECTORY_INFORMATION:
3753 struct file_id_full_dir_info *dinfo;
3755 dinfo = (struct file_id_full_dir_info *)d_info->wptr;
3756 memcpy(dinfo->FileName, d_info->name, d_info->name_len);
3757 dinfo->FileName[d_info->name_len] = 0x00;
3758 dinfo->FileNameLength = cpu_to_le32(d_info->name_len);
3759 dinfo->NextEntryOffset = cpu_to_le32(next_entry_offset);
3762 case FILEID_BOTH_DIRECTORY_INFORMATION:
3764 struct file_id_both_directory_info *fibdinfo;
3766 fibdinfo = (struct file_id_both_directory_info *)d_info->wptr;
3767 memcpy(fibdinfo->FileName, d_info->name, d_info->name_len);
3768 fibdinfo->FileName[d_info->name_len] = 0x00;
3769 fibdinfo->FileNameLength = cpu_to_le32(d_info->name_len);
3770 fibdinfo->NextEntryOffset = cpu_to_le32(next_entry_offset);
3773 case SMB_FIND_FILE_POSIX_INFO:
3775 struct smb2_posix_info *posix_info;
3777 posix_info = (struct smb2_posix_info *)d_info->wptr;
3778 memcpy(posix_info->name, d_info->name, d_info->name_len);
3779 posix_info->name[d_info->name_len] = 0x00;
3780 posix_info->name_len = cpu_to_le32(d_info->name_len);
3781 posix_info->NextEntryOffset =
3782 cpu_to_le32(next_entry_offset);
3785 } /* switch (info_level) */
3787 d_info->num_entry++;
3788 d_info->out_buf_len -= next_entry_offset;
3789 d_info->wptr += next_entry_offset;
3793 static bool __query_dir(struct dir_context *ctx, const char *name, int namlen,
3794 loff_t offset, u64 ino, unsigned int d_type)
3796 struct ksmbd_readdir_data *buf;
3797 struct smb2_query_dir_private *priv;
3798 struct ksmbd_dir_info *d_info;
3801 buf = container_of(ctx, struct ksmbd_readdir_data, ctx);
3802 priv = buf->private;
3803 d_info = priv->d_info;
3805 /* dot and dotdot entries are already reserved */
3806 if (!strcmp(".", name) || !strcmp("..", name))
3808 if (ksmbd_share_veto_filename(priv->work->tcon->share_conf, name))
3810 if (!match_pattern(name, namlen, priv->search_pattern))
3813 d_info->name = name;
3814 d_info->name_len = namlen;
3815 rc = reserve_populate_dentry(d_info, priv->info_level);
3818 if (d_info->flags & SMB2_RETURN_SINGLE_ENTRY)
3819 d_info->out_buf_len = 0;
3823 static int verify_info_level(int info_level)
3825 switch (info_level) {
3826 case FILE_FULL_DIRECTORY_INFORMATION:
3827 case FILE_BOTH_DIRECTORY_INFORMATION:
3828 case FILE_DIRECTORY_INFORMATION:
3829 case FILE_NAMES_INFORMATION:
3830 case FILEID_FULL_DIRECTORY_INFORMATION:
3831 case FILEID_BOTH_DIRECTORY_INFORMATION:
3832 case SMB_FIND_FILE_POSIX_INFO:
3841 static int smb2_resp_buf_len(struct ksmbd_work *work, unsigned short hdr2_len)
3845 free_len = (int)(work->response_sz -
3846 (get_rfc1002_len(work->response_buf) + 4)) - hdr2_len;
3850 static int smb2_calc_max_out_buf_len(struct ksmbd_work *work,
3851 unsigned short hdr2_len,
3852 unsigned int out_buf_len)
3856 if (out_buf_len > work->conn->vals->max_trans_size)
3859 free_len = smb2_resp_buf_len(work, hdr2_len);
3863 return min_t(int, out_buf_len, free_len);
3866 int smb2_query_dir(struct ksmbd_work *work)
3868 struct ksmbd_conn *conn = work->conn;
3869 struct smb2_query_directory_req *req;
3870 struct smb2_query_directory_rsp *rsp;
3871 struct ksmbd_share_config *share = work->tcon->share_conf;
3872 struct ksmbd_file *dir_fp = NULL;
3873 struct ksmbd_dir_info d_info;
3875 char *srch_ptr = NULL;
3876 unsigned char srch_flag;
3878 struct smb2_query_dir_private query_dir_private = {NULL, };
3880 WORK_BUFFERS(work, req, rsp);
3882 if (ksmbd_override_fsids(work)) {
3883 rsp->hdr.Status = STATUS_NO_MEMORY;
3884 smb2_set_err_rsp(work);
3888 rc = verify_info_level(req->FileInformationClass);
3894 dir_fp = ksmbd_lookup_fd_slow(work, req->VolatileFileId, req->PersistentFileId);
3900 if (!(dir_fp->daccess & FILE_LIST_DIRECTORY_LE) ||
3901 inode_permission(file_mnt_idmap(dir_fp->filp),
3902 file_inode(dir_fp->filp),
3903 MAY_READ | MAY_EXEC)) {
3904 pr_err("no right to enumerate directory (%pD)\n", dir_fp->filp);
3909 if (!S_ISDIR(file_inode(dir_fp->filp)->i_mode)) {
3910 pr_err("can't do query dir for a file\n");
3915 srch_flag = req->Flags;
3916 srch_ptr = smb_strndup_from_utf16(req->Buffer,
3917 le16_to_cpu(req->FileNameLength), 1,
3919 if (IS_ERR(srch_ptr)) {
3920 ksmbd_debug(SMB, "Search Pattern not found\n");
3924 ksmbd_debug(SMB, "Search pattern is %s\n", srch_ptr);
3927 if (srch_flag & SMB2_REOPEN || srch_flag & SMB2_RESTART_SCANS) {
3928 ksmbd_debug(SMB, "Restart directory scan\n");
3929 generic_file_llseek(dir_fp->filp, 0, SEEK_SET);
3932 memset(&d_info, 0, sizeof(struct ksmbd_dir_info));
3933 d_info.wptr = (char *)rsp->Buffer;
3934 d_info.rptr = (char *)rsp->Buffer;
3935 d_info.out_buf_len =
3936 smb2_calc_max_out_buf_len(work, 8,
3937 le32_to_cpu(req->OutputBufferLength));
3938 if (d_info.out_buf_len < 0) {
3942 d_info.flags = srch_flag;
3945 * reserve dot and dotdot entries in head of buffer
3948 rc = ksmbd_populate_dot_dotdot_entries(work, req->FileInformationClass,
3949 dir_fp, &d_info, srch_ptr,
3950 smb2_populate_readdir_entry);
3956 if (test_share_config_flag(share, KSMBD_SHARE_FLAG_HIDE_DOT_FILES))
3957 d_info.hide_dot_file = true;
3959 buffer_sz = d_info.out_buf_len;
3960 d_info.rptr = d_info.wptr;
3961 query_dir_private.work = work;
3962 query_dir_private.search_pattern = srch_ptr;
3963 query_dir_private.dir_fp = dir_fp;
3964 query_dir_private.d_info = &d_info;
3965 query_dir_private.info_level = req->FileInformationClass;
3966 dir_fp->readdir_data.private = &query_dir_private;
3967 set_ctx_actor(&dir_fp->readdir_data.ctx, __query_dir);
3969 rc = iterate_dir(dir_fp->filp, &dir_fp->readdir_data.ctx);
3971 * req->OutputBufferLength is too small to contain even one entry.
3972 * In this case, it immediately returns OutputBufferLength 0 to client.
3974 if (!d_info.out_buf_len && !d_info.num_entry)
3976 if (rc > 0 || rc == -ENOSPC)
3981 d_info.wptr = d_info.rptr;
3982 d_info.out_buf_len = buffer_sz;
3983 rc = process_query_dir_entries(&query_dir_private);
3987 if (!d_info.data_count && d_info.out_buf_len >= 0) {
3988 if (srch_flag & SMB2_RETURN_SINGLE_ENTRY && !is_asterisk(srch_ptr)) {
3989 rsp->hdr.Status = STATUS_NO_SUCH_FILE;
3991 dir_fp->dot_dotdot[0] = dir_fp->dot_dotdot[1] = 0;
3992 rsp->hdr.Status = STATUS_NO_MORE_FILES;
3994 rsp->StructureSize = cpu_to_le16(9);
3995 rsp->OutputBufferOffset = cpu_to_le16(0);
3996 rsp->OutputBufferLength = cpu_to_le32(0);
3998 inc_rfc1001_len(work->response_buf, 9);
4001 ((struct file_directory_info *)
4002 ((char *)rsp->Buffer + d_info.last_entry_offset))
4003 ->NextEntryOffset = 0;
4004 if (d_info.data_count >= d_info.last_entry_off_align)
4005 d_info.data_count -= d_info.last_entry_off_align;
4007 rsp->StructureSize = cpu_to_le16(9);
4008 rsp->OutputBufferOffset = cpu_to_le16(72);
4009 rsp->OutputBufferLength = cpu_to_le32(d_info.data_count);
4010 inc_rfc1001_len(work->response_buf, 8 + d_info.data_count);
4014 ksmbd_fd_put(work, dir_fp);
4015 ksmbd_revert_fsids(work);
4019 pr_err("error while processing smb2 query dir rc = %d\n", rc);
4024 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
4025 else if (rc == -EACCES)
4026 rsp->hdr.Status = STATUS_ACCESS_DENIED;
4027 else if (rc == -ENOENT)
4028 rsp->hdr.Status = STATUS_NO_SUCH_FILE;
4029 else if (rc == -EBADF)
4030 rsp->hdr.Status = STATUS_FILE_CLOSED;
4031 else if (rc == -ENOMEM)
4032 rsp->hdr.Status = STATUS_NO_MEMORY;
4033 else if (rc == -EFAULT)
4034 rsp->hdr.Status = STATUS_INVALID_INFO_CLASS;
4035 else if (rc == -EIO)
4036 rsp->hdr.Status = STATUS_FILE_CORRUPT_ERROR;
4037 if (!rsp->hdr.Status)
4038 rsp->hdr.Status = STATUS_UNEXPECTED_IO_ERROR;
4040 smb2_set_err_rsp(work);
4041 ksmbd_fd_put(work, dir_fp);
4042 ksmbd_revert_fsids(work);
4047 * buffer_check_err() - helper function to check buffer errors
4048 * @reqOutputBufferLength: max buffer length expected in command response
4049 * @rsp: query info response buffer contains output buffer length
4050 * @rsp_org: base response buffer pointer in case of chained response
4051 * @infoclass_size: query info class response buffer size
4053 * Return: 0 on success, otherwise error
4055 static int buffer_check_err(int reqOutputBufferLength,
4056 struct smb2_query_info_rsp *rsp,
4057 void *rsp_org, int infoclass_size)
4059 if (reqOutputBufferLength < le32_to_cpu(rsp->OutputBufferLength)) {
4060 if (reqOutputBufferLength < infoclass_size) {
4061 pr_err("Invalid Buffer Size Requested\n");
4062 rsp->hdr.Status = STATUS_INFO_LENGTH_MISMATCH;
4063 *(__be32 *)rsp_org = cpu_to_be32(sizeof(struct smb2_hdr));
4067 ksmbd_debug(SMB, "Buffer Overflow\n");
4068 rsp->hdr.Status = STATUS_BUFFER_OVERFLOW;
4069 *(__be32 *)rsp_org = cpu_to_be32(sizeof(struct smb2_hdr) +
4070 reqOutputBufferLength);
4071 rsp->OutputBufferLength = cpu_to_le32(reqOutputBufferLength);
4076 static void get_standard_info_pipe(struct smb2_query_info_rsp *rsp,
4079 struct smb2_file_standard_info *sinfo;
4081 sinfo = (struct smb2_file_standard_info *)rsp->Buffer;
4083 sinfo->AllocationSize = cpu_to_le64(4096);
4084 sinfo->EndOfFile = cpu_to_le64(0);
4085 sinfo->NumberOfLinks = cpu_to_le32(1);
4086 sinfo->DeletePending = 1;
4087 sinfo->Directory = 0;
4088 rsp->OutputBufferLength =
4089 cpu_to_le32(sizeof(struct smb2_file_standard_info));
4090 inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_standard_info));
4093 static void get_internal_info_pipe(struct smb2_query_info_rsp *rsp, u64 num,
4096 struct smb2_file_internal_info *file_info;
4098 file_info = (struct smb2_file_internal_info *)rsp->Buffer;
4100 /* any unique number */
4101 file_info->IndexNumber = cpu_to_le64(num | (1ULL << 63));
4102 rsp->OutputBufferLength =
4103 cpu_to_le32(sizeof(struct smb2_file_internal_info));
4104 inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_internal_info));
4107 static int smb2_get_info_file_pipe(struct ksmbd_session *sess,
4108 struct smb2_query_info_req *req,
4109 struct smb2_query_info_rsp *rsp,
4116 * Windows can sometime send query file info request on
4117 * pipe without opening it, checking error condition here
4119 id = req->VolatileFileId;
4120 if (!ksmbd_session_rpc_method(sess, id))
4123 ksmbd_debug(SMB, "FileInfoClass %u, FileId 0x%llx\n",
4124 req->FileInfoClass, req->VolatileFileId);
4126 switch (req->FileInfoClass) {
4127 case FILE_STANDARD_INFORMATION:
4128 get_standard_info_pipe(rsp, rsp_org);
4129 rc = buffer_check_err(le32_to_cpu(req->OutputBufferLength),
4131 FILE_STANDARD_INFORMATION_SIZE);
4133 case FILE_INTERNAL_INFORMATION:
4134 get_internal_info_pipe(rsp, id, rsp_org);
4135 rc = buffer_check_err(le32_to_cpu(req->OutputBufferLength),
4137 FILE_INTERNAL_INFORMATION_SIZE);
4140 ksmbd_debug(SMB, "smb2_info_file_pipe for %u not supported\n",
4141 req->FileInfoClass);
4148 * smb2_get_ea() - handler for smb2 get extended attribute command
4149 * @work: smb work containing query info command buffer
4150 * @fp: ksmbd_file pointer
4151 * @req: get extended attribute request
4152 * @rsp: response buffer pointer
4153 * @rsp_org: base response buffer pointer in case of chained response
4155 * Return: 0 on success, otherwise error
4157 static int smb2_get_ea(struct ksmbd_work *work, struct ksmbd_file *fp,
4158 struct smb2_query_info_req *req,
4159 struct smb2_query_info_rsp *rsp, void *rsp_org)
4161 struct smb2_ea_info *eainfo, *prev_eainfo;
4162 char *name, *ptr, *xattr_list = NULL, *buf;
4163 int rc, name_len, value_len, xattr_list_len, idx;
4164 ssize_t buf_free_len, alignment_bytes, next_offset, rsp_data_cnt = 0;
4165 struct smb2_ea_info_req *ea_req = NULL;
4166 const struct path *path;
4167 struct mnt_idmap *idmap = file_mnt_idmap(fp->filp);
4169 if (!(fp->daccess & FILE_READ_EA_LE)) {
4170 pr_err("Not permitted to read ext attr : 0x%x\n",
4175 path = &fp->filp->f_path;
4176 /* single EA entry is requested with given user.* name */
4177 if (req->InputBufferLength) {
4178 if (le32_to_cpu(req->InputBufferLength) <
4179 sizeof(struct smb2_ea_info_req))
4182 ea_req = (struct smb2_ea_info_req *)req->Buffer;
4184 /* need to send all EAs, if no specific EA is requested*/
4185 if (le32_to_cpu(req->Flags) & SL_RETURN_SINGLE_ENTRY)
4187 "All EAs are requested but need to send single EA entry in rsp flags 0x%x\n",
4188 le32_to_cpu(req->Flags));
4192 smb2_calc_max_out_buf_len(work, 8,
4193 le32_to_cpu(req->OutputBufferLength));
4194 if (buf_free_len < 0)
4197 rc = ksmbd_vfs_listxattr(path->dentry, &xattr_list);
4199 rsp->hdr.Status = STATUS_INVALID_HANDLE;
4201 } else if (!rc) { /* there is no EA in the file */
4202 ksmbd_debug(SMB, "no ea data in the file\n");
4205 xattr_list_len = rc;
4207 ptr = (char *)rsp->Buffer;
4208 eainfo = (struct smb2_ea_info *)ptr;
4209 prev_eainfo = eainfo;
4212 while (idx < xattr_list_len) {
4213 name = xattr_list + idx;
4214 name_len = strlen(name);
4216 ksmbd_debug(SMB, "%s, len %d\n", name, name_len);
4217 idx += name_len + 1;
4220 * CIFS does not support EA other than user.* namespace,
4221 * still keep the framework generic, to list other attrs
4224 if (strncmp(name, XATTR_USER_PREFIX, XATTR_USER_PREFIX_LEN))
4227 if (!strncmp(&name[XATTR_USER_PREFIX_LEN], STREAM_PREFIX,
4231 if (req->InputBufferLength &&
4232 strncmp(&name[XATTR_USER_PREFIX_LEN], ea_req->name,
4233 ea_req->EaNameLength))
4236 if (!strncmp(&name[XATTR_USER_PREFIX_LEN],
4237 DOS_ATTRIBUTE_PREFIX, DOS_ATTRIBUTE_PREFIX_LEN))
4240 if (!strncmp(name, XATTR_USER_PREFIX, XATTR_USER_PREFIX_LEN))
4241 name_len -= XATTR_USER_PREFIX_LEN;
4243 ptr = (char *)(&eainfo->name + name_len + 1);
4244 buf_free_len -= (offsetof(struct smb2_ea_info, name) +
4246 /* bailout if xattr can't fit in buf_free_len */
4247 value_len = ksmbd_vfs_getxattr(idmap, path->dentry,
4249 if (value_len <= 0) {
4251 rsp->hdr.Status = STATUS_INVALID_HANDLE;
4255 buf_free_len -= value_len;
4256 if (buf_free_len < 0) {
4261 memcpy(ptr, buf, value_len);
4266 eainfo->EaNameLength = name_len;
4268 if (!strncmp(name, XATTR_USER_PREFIX, XATTR_USER_PREFIX_LEN))
4269 memcpy(eainfo->name, &name[XATTR_USER_PREFIX_LEN],
4272 memcpy(eainfo->name, name, name_len);
4274 eainfo->name[name_len] = '\0';
4275 eainfo->EaValueLength = cpu_to_le16(value_len);
4276 next_offset = offsetof(struct smb2_ea_info, name) +
4277 name_len + 1 + value_len;
4279 /* align next xattr entry at 4 byte bundary */
4280 alignment_bytes = ((next_offset + 3) & ~3) - next_offset;
4281 if (alignment_bytes) {
4282 memset(ptr, '\0', alignment_bytes);
4283 ptr += alignment_bytes;
4284 next_offset += alignment_bytes;
4285 buf_free_len -= alignment_bytes;
4287 eainfo->NextEntryOffset = cpu_to_le32(next_offset);
4288 prev_eainfo = eainfo;
4289 eainfo = (struct smb2_ea_info *)ptr;
4290 rsp_data_cnt += next_offset;
4292 if (req->InputBufferLength) {
4293 ksmbd_debug(SMB, "single entry requested\n");
4298 /* no more ea entries */
4299 prev_eainfo->NextEntryOffset = 0;
4302 if (rsp_data_cnt == 0)
4303 rsp->hdr.Status = STATUS_NO_EAS_ON_FILE;
4304 rsp->OutputBufferLength = cpu_to_le32(rsp_data_cnt);
4305 inc_rfc1001_len(rsp_org, rsp_data_cnt);
4311 static void get_file_access_info(struct smb2_query_info_rsp *rsp,
4312 struct ksmbd_file *fp, void *rsp_org)
4314 struct smb2_file_access_info *file_info;
4316 file_info = (struct smb2_file_access_info *)rsp->Buffer;
4317 file_info->AccessFlags = fp->daccess;
4318 rsp->OutputBufferLength =
4319 cpu_to_le32(sizeof(struct smb2_file_access_info));
4320 inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_access_info));
4323 static int get_file_basic_info(struct smb2_query_info_rsp *rsp,
4324 struct ksmbd_file *fp, void *rsp_org)
4326 struct smb2_file_basic_info *basic_info;
4330 if (!(fp->daccess & FILE_READ_ATTRIBUTES_LE)) {
4331 pr_err("no right to read the attributes : 0x%x\n",
4336 basic_info = (struct smb2_file_basic_info *)rsp->Buffer;
4337 generic_fillattr(file_mnt_idmap(fp->filp), file_inode(fp->filp),
4339 basic_info->CreationTime = cpu_to_le64(fp->create_time);
4340 time = ksmbd_UnixTimeToNT(stat.atime);
4341 basic_info->LastAccessTime = cpu_to_le64(time);
4342 time = ksmbd_UnixTimeToNT(stat.mtime);
4343 basic_info->LastWriteTime = cpu_to_le64(time);
4344 time = ksmbd_UnixTimeToNT(stat.ctime);
4345 basic_info->ChangeTime = cpu_to_le64(time);
4346 basic_info->Attributes = fp->f_ci->m_fattr;
4347 basic_info->Pad1 = 0;
4348 rsp->OutputBufferLength =
4349 cpu_to_le32(sizeof(struct smb2_file_basic_info));
4350 inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_basic_info));
4354 static unsigned long long get_allocation_size(struct inode *inode,
4357 unsigned long long alloc_size = 0;
4359 if (!S_ISDIR(stat->mode)) {
4360 if ((inode->i_blocks << 9) <= stat->size)
4361 alloc_size = stat->size;
4363 alloc_size = inode->i_blocks << 9;
4369 static void get_file_standard_info(struct smb2_query_info_rsp *rsp,
4370 struct ksmbd_file *fp, void *rsp_org)
4372 struct smb2_file_standard_info *sinfo;
4373 unsigned int delete_pending;
4374 struct inode *inode;
4377 inode = file_inode(fp->filp);
4378 generic_fillattr(file_mnt_idmap(fp->filp), inode, &stat);
4380 sinfo = (struct smb2_file_standard_info *)rsp->Buffer;
4381 delete_pending = ksmbd_inode_pending_delete(fp);
4383 sinfo->AllocationSize = cpu_to_le64(get_allocation_size(inode, &stat));
4384 sinfo->EndOfFile = S_ISDIR(stat.mode) ? 0 : cpu_to_le64(stat.size);
4385 sinfo->NumberOfLinks = cpu_to_le32(get_nlink(&stat) - delete_pending);
4386 sinfo->DeletePending = delete_pending;
4387 sinfo->Directory = S_ISDIR(stat.mode) ? 1 : 0;
4388 rsp->OutputBufferLength =
4389 cpu_to_le32(sizeof(struct smb2_file_standard_info));
4390 inc_rfc1001_len(rsp_org,
4391 sizeof(struct smb2_file_standard_info));
4394 static void get_file_alignment_info(struct smb2_query_info_rsp *rsp,
4397 struct smb2_file_alignment_info *file_info;
4399 file_info = (struct smb2_file_alignment_info *)rsp->Buffer;
4400 file_info->AlignmentRequirement = 0;
4401 rsp->OutputBufferLength =
4402 cpu_to_le32(sizeof(struct smb2_file_alignment_info));
4403 inc_rfc1001_len(rsp_org,
4404 sizeof(struct smb2_file_alignment_info));
4407 static int get_file_all_info(struct ksmbd_work *work,
4408 struct smb2_query_info_rsp *rsp,
4409 struct ksmbd_file *fp,
4412 struct ksmbd_conn *conn = work->conn;
4413 struct smb2_file_all_info *file_info;
4414 unsigned int delete_pending;
4415 struct inode *inode;
4421 if (!(fp->daccess & FILE_READ_ATTRIBUTES_LE)) {
4422 ksmbd_debug(SMB, "no right to read the attributes : 0x%x\n",
4427 filename = convert_to_nt_pathname(work->tcon->share_conf, &fp->filp->f_path);
4428 if (IS_ERR(filename))
4429 return PTR_ERR(filename);
4431 inode = file_inode(fp->filp);
4432 generic_fillattr(file_mnt_idmap(fp->filp), inode, &stat);
4434 ksmbd_debug(SMB, "filename = %s\n", filename);
4435 delete_pending = ksmbd_inode_pending_delete(fp);
4436 file_info = (struct smb2_file_all_info *)rsp->Buffer;
4438 file_info->CreationTime = cpu_to_le64(fp->create_time);
4439 time = ksmbd_UnixTimeToNT(stat.atime);
4440 file_info->LastAccessTime = cpu_to_le64(time);
4441 time = ksmbd_UnixTimeToNT(stat.mtime);
4442 file_info->LastWriteTime = cpu_to_le64(time);
4443 time = ksmbd_UnixTimeToNT(stat.ctime);
4444 file_info->ChangeTime = cpu_to_le64(time);
4445 file_info->Attributes = fp->f_ci->m_fattr;
4446 file_info->Pad1 = 0;
4447 file_info->AllocationSize =
4448 cpu_to_le64(get_allocation_size(inode, &stat));
4449 file_info->EndOfFile = S_ISDIR(stat.mode) ? 0 : cpu_to_le64(stat.size);
4450 file_info->NumberOfLinks =
4451 cpu_to_le32(get_nlink(&stat) - delete_pending);
4452 file_info->DeletePending = delete_pending;
4453 file_info->Directory = S_ISDIR(stat.mode) ? 1 : 0;
4454 file_info->Pad2 = 0;
4455 file_info->IndexNumber = cpu_to_le64(stat.ino);
4456 file_info->EASize = 0;
4457 file_info->AccessFlags = fp->daccess;
4458 file_info->CurrentByteOffset = cpu_to_le64(fp->filp->f_pos);
4459 file_info->Mode = fp->coption;
4460 file_info->AlignmentRequirement = 0;
4461 conv_len = smbConvertToUTF16((__le16 *)file_info->FileName, filename,
4462 PATH_MAX, conn->local_nls, 0);
4464 file_info->FileNameLength = cpu_to_le32(conv_len);
4465 rsp->OutputBufferLength =
4466 cpu_to_le32(sizeof(struct smb2_file_all_info) + conv_len - 1);
4468 inc_rfc1001_len(rsp_org, le32_to_cpu(rsp->OutputBufferLength));
4472 static void get_file_alternate_info(struct ksmbd_work *work,
4473 struct smb2_query_info_rsp *rsp,
4474 struct ksmbd_file *fp,
4477 struct ksmbd_conn *conn = work->conn;
4478 struct smb2_file_alt_name_info *file_info;
4479 struct dentry *dentry = fp->filp->f_path.dentry;
4482 spin_lock(&dentry->d_lock);
4483 file_info = (struct smb2_file_alt_name_info *)rsp->Buffer;
4484 conv_len = ksmbd_extract_shortname(conn,
4485 dentry->d_name.name,
4486 file_info->FileName);
4487 spin_unlock(&dentry->d_lock);
4488 file_info->FileNameLength = cpu_to_le32(conv_len);
4489 rsp->OutputBufferLength =
4490 cpu_to_le32(sizeof(struct smb2_file_alt_name_info) + conv_len);
4491 inc_rfc1001_len(rsp_org, le32_to_cpu(rsp->OutputBufferLength));
4494 static void get_file_stream_info(struct ksmbd_work *work,
4495 struct smb2_query_info_rsp *rsp,
4496 struct ksmbd_file *fp,
4499 struct ksmbd_conn *conn = work->conn;
4500 struct smb2_file_stream_info *file_info;
4501 char *stream_name, *xattr_list = NULL, *stream_buf;
4503 const struct path *path = &fp->filp->f_path;
4504 ssize_t xattr_list_len;
4505 int nbytes = 0, streamlen, stream_name_len, next, idx = 0;
4507 struct smb2_query_info_req *req = ksmbd_req_buf_next(work);
4509 generic_fillattr(file_mnt_idmap(fp->filp), file_inode(fp->filp),
4511 file_info = (struct smb2_file_stream_info *)rsp->Buffer;
4514 smb2_calc_max_out_buf_len(work, 8,
4515 le32_to_cpu(req->OutputBufferLength));
4516 if (buf_free_len < 0)
4519 xattr_list_len = ksmbd_vfs_listxattr(path->dentry, &xattr_list);
4520 if (xattr_list_len < 0) {
4522 } else if (!xattr_list_len) {
4523 ksmbd_debug(SMB, "empty xattr in the file\n");
4527 while (idx < xattr_list_len) {
4528 stream_name = xattr_list + idx;
4529 streamlen = strlen(stream_name);
4530 idx += streamlen + 1;
4532 ksmbd_debug(SMB, "%s, len %d\n", stream_name, streamlen);
4534 if (strncmp(&stream_name[XATTR_USER_PREFIX_LEN],
4535 STREAM_PREFIX, STREAM_PREFIX_LEN))
4538 stream_name_len = streamlen - (XATTR_USER_PREFIX_LEN +
4540 streamlen = stream_name_len;
4544 stream_buf = kmalloc(streamlen + 1, GFP_KERNEL);
4548 streamlen = snprintf(stream_buf, streamlen + 1,
4549 ":%s", &stream_name[XATTR_NAME_STREAM_LEN]);
4551 next = sizeof(struct smb2_file_stream_info) + streamlen * 2;
4552 if (next > buf_free_len) {
4557 file_info = (struct smb2_file_stream_info *)&rsp->Buffer[nbytes];
4558 streamlen = smbConvertToUTF16((__le16 *)file_info->StreamName,
4559 stream_buf, streamlen,
4560 conn->local_nls, 0);
4563 file_info->StreamNameLength = cpu_to_le32(streamlen);
4564 file_info->StreamSize = cpu_to_le64(stream_name_len);
4565 file_info->StreamAllocationSize = cpu_to_le64(stream_name_len);
4568 buf_free_len -= next;
4569 file_info->NextEntryOffset = cpu_to_le32(next);
4573 if (!S_ISDIR(stat.mode) &&
4574 buf_free_len >= sizeof(struct smb2_file_stream_info) + 7 * 2) {
4575 file_info = (struct smb2_file_stream_info *)
4576 &rsp->Buffer[nbytes];
4577 streamlen = smbConvertToUTF16((__le16 *)file_info->StreamName,
4578 "::$DATA", 7, conn->local_nls, 0);
4580 file_info->StreamNameLength = cpu_to_le32(streamlen);
4581 file_info->StreamSize = cpu_to_le64(stat.size);
4582 file_info->StreamAllocationSize = cpu_to_le64(stat.blocks << 9);
4583 nbytes += sizeof(struct smb2_file_stream_info) + streamlen;
4586 /* last entry offset should be 0 */
4587 file_info->NextEntryOffset = 0;
4590 rsp->OutputBufferLength = cpu_to_le32(nbytes);
4591 inc_rfc1001_len(rsp_org, nbytes);
4594 static void get_file_internal_info(struct smb2_query_info_rsp *rsp,
4595 struct ksmbd_file *fp, void *rsp_org)
4597 struct smb2_file_internal_info *file_info;
4600 generic_fillattr(file_mnt_idmap(fp->filp), file_inode(fp->filp),
4602 file_info = (struct smb2_file_internal_info *)rsp->Buffer;
4603 file_info->IndexNumber = cpu_to_le64(stat.ino);
4604 rsp->OutputBufferLength =
4605 cpu_to_le32(sizeof(struct smb2_file_internal_info));
4606 inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_internal_info));
4609 static int get_file_network_open_info(struct smb2_query_info_rsp *rsp,
4610 struct ksmbd_file *fp, void *rsp_org)
4612 struct smb2_file_ntwrk_info *file_info;
4613 struct inode *inode;
4617 if (!(fp->daccess & FILE_READ_ATTRIBUTES_LE)) {
4618 pr_err("no right to read the attributes : 0x%x\n",
4623 file_info = (struct smb2_file_ntwrk_info *)rsp->Buffer;
4625 inode = file_inode(fp->filp);
4626 generic_fillattr(file_mnt_idmap(fp->filp), inode, &stat);
4628 file_info->CreationTime = cpu_to_le64(fp->create_time);
4629 time = ksmbd_UnixTimeToNT(stat.atime);
4630 file_info->LastAccessTime = cpu_to_le64(time);
4631 time = ksmbd_UnixTimeToNT(stat.mtime);
4632 file_info->LastWriteTime = cpu_to_le64(time);
4633 time = ksmbd_UnixTimeToNT(stat.ctime);
4634 file_info->ChangeTime = cpu_to_le64(time);
4635 file_info->Attributes = fp->f_ci->m_fattr;
4636 file_info->AllocationSize =
4637 cpu_to_le64(get_allocation_size(inode, &stat));
4638 file_info->EndOfFile = S_ISDIR(stat.mode) ? 0 : cpu_to_le64(stat.size);
4639 file_info->Reserved = cpu_to_le32(0);
4640 rsp->OutputBufferLength =
4641 cpu_to_le32(sizeof(struct smb2_file_ntwrk_info));
4642 inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_ntwrk_info));
4646 static void get_file_ea_info(struct smb2_query_info_rsp *rsp, void *rsp_org)
4648 struct smb2_file_ea_info *file_info;
4650 file_info = (struct smb2_file_ea_info *)rsp->Buffer;
4651 file_info->EASize = 0;
4652 rsp->OutputBufferLength =
4653 cpu_to_le32(sizeof(struct smb2_file_ea_info));
4654 inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_ea_info));
4657 static void get_file_position_info(struct smb2_query_info_rsp *rsp,
4658 struct ksmbd_file *fp, void *rsp_org)
4660 struct smb2_file_pos_info *file_info;
4662 file_info = (struct smb2_file_pos_info *)rsp->Buffer;
4663 file_info->CurrentByteOffset = cpu_to_le64(fp->filp->f_pos);
4664 rsp->OutputBufferLength =
4665 cpu_to_le32(sizeof(struct smb2_file_pos_info));
4666 inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_pos_info));
4669 static void get_file_mode_info(struct smb2_query_info_rsp *rsp,
4670 struct ksmbd_file *fp, void *rsp_org)
4672 struct smb2_file_mode_info *file_info;
4674 file_info = (struct smb2_file_mode_info *)rsp->Buffer;
4675 file_info->Mode = fp->coption & FILE_MODE_INFO_MASK;
4676 rsp->OutputBufferLength =
4677 cpu_to_le32(sizeof(struct smb2_file_mode_info));
4678 inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_mode_info));
4681 static void get_file_compression_info(struct smb2_query_info_rsp *rsp,
4682 struct ksmbd_file *fp, void *rsp_org)
4684 struct smb2_file_comp_info *file_info;
4687 generic_fillattr(file_mnt_idmap(fp->filp), file_inode(fp->filp),
4690 file_info = (struct smb2_file_comp_info *)rsp->Buffer;
4691 file_info->CompressedFileSize = cpu_to_le64(stat.blocks << 9);
4692 file_info->CompressionFormat = COMPRESSION_FORMAT_NONE;
4693 file_info->CompressionUnitShift = 0;
4694 file_info->ChunkShift = 0;
4695 file_info->ClusterShift = 0;
4696 memset(&file_info->Reserved[0], 0, 3);
4698 rsp->OutputBufferLength =
4699 cpu_to_le32(sizeof(struct smb2_file_comp_info));
4700 inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_comp_info));
4703 static int get_file_attribute_tag_info(struct smb2_query_info_rsp *rsp,
4704 struct ksmbd_file *fp, void *rsp_org)
4706 struct smb2_file_attr_tag_info *file_info;
4708 if (!(fp->daccess & FILE_READ_ATTRIBUTES_LE)) {
4709 pr_err("no right to read the attributes : 0x%x\n",
4714 file_info = (struct smb2_file_attr_tag_info *)rsp->Buffer;
4715 file_info->FileAttributes = fp->f_ci->m_fattr;
4716 file_info->ReparseTag = 0;
4717 rsp->OutputBufferLength =
4718 cpu_to_le32(sizeof(struct smb2_file_attr_tag_info));
4719 inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_attr_tag_info));
4723 static int find_file_posix_info(struct smb2_query_info_rsp *rsp,
4724 struct ksmbd_file *fp, void *rsp_org)
4726 struct smb311_posix_qinfo *file_info;
4727 struct inode *inode = file_inode(fp->filp);
4728 struct user_namespace *user_ns = file_mnt_user_ns(fp->filp);
4729 vfsuid_t vfsuid = i_uid_into_vfsuid(user_ns, inode);
4730 vfsgid_t vfsgid = i_gid_into_vfsgid(user_ns, inode);
4732 int out_buf_len = sizeof(struct smb311_posix_qinfo) + 32;
4734 file_info = (struct smb311_posix_qinfo *)rsp->Buffer;
4735 file_info->CreationTime = cpu_to_le64(fp->create_time);
4736 time = ksmbd_UnixTimeToNT(inode->i_atime);
4737 file_info->LastAccessTime = cpu_to_le64(time);
4738 time = ksmbd_UnixTimeToNT(inode->i_mtime);
4739 file_info->LastWriteTime = cpu_to_le64(time);
4740 time = ksmbd_UnixTimeToNT(inode->i_ctime);
4741 file_info->ChangeTime = cpu_to_le64(time);
4742 file_info->DosAttributes = fp->f_ci->m_fattr;
4743 file_info->Inode = cpu_to_le64(inode->i_ino);
4744 file_info->EndOfFile = cpu_to_le64(inode->i_size);
4745 file_info->AllocationSize = cpu_to_le64(inode->i_blocks << 9);
4746 file_info->HardLinks = cpu_to_le32(inode->i_nlink);
4747 file_info->Mode = cpu_to_le32(inode->i_mode & 0777);
4748 file_info->DeviceId = cpu_to_le32(inode->i_rdev);
4751 * Sids(32) contain two sids(Domain sid(16), UNIX group sid(16)).
4752 * UNIX sid(16) = revision(1) + num_subauth(1) + authority(6) +
4753 * sub_auth(4 * 1(num_subauth)) + RID(4).
4755 id_to_sid(from_kuid_munged(&init_user_ns, vfsuid_into_kuid(vfsuid)),
4756 SIDUNIX_USER, (struct smb_sid *)&file_info->Sids[0]);
4757 id_to_sid(from_kgid_munged(&init_user_ns, vfsgid_into_kgid(vfsgid)),
4758 SIDUNIX_GROUP, (struct smb_sid *)&file_info->Sids[16]);
4760 rsp->OutputBufferLength = cpu_to_le32(out_buf_len);
4761 inc_rfc1001_len(rsp_org, out_buf_len);
4765 static int smb2_get_info_file(struct ksmbd_work *work,
4766 struct smb2_query_info_req *req,
4767 struct smb2_query_info_rsp *rsp)
4769 struct ksmbd_file *fp;
4770 int fileinfoclass = 0;
4772 int file_infoclass_size;
4773 unsigned int id = KSMBD_NO_FID, pid = KSMBD_NO_FID;
4775 if (test_share_config_flag(work->tcon->share_conf,
4776 KSMBD_SHARE_FLAG_PIPE)) {
4777 /* smb2 info file called for pipe */
4778 return smb2_get_info_file_pipe(work->sess, req, rsp,
4779 work->response_buf);
4782 if (work->next_smb2_rcv_hdr_off) {
4783 if (!has_file_id(req->VolatileFileId)) {
4784 ksmbd_debug(SMB, "Compound request set FID = %llu\n",
4785 work->compound_fid);
4786 id = work->compound_fid;
4787 pid = work->compound_pfid;
4791 if (!has_file_id(id)) {
4792 id = req->VolatileFileId;
4793 pid = req->PersistentFileId;
4796 fp = ksmbd_lookup_fd_slow(work, id, pid);
4800 fileinfoclass = req->FileInfoClass;
4802 switch (fileinfoclass) {
4803 case FILE_ACCESS_INFORMATION:
4804 get_file_access_info(rsp, fp, work->response_buf);
4805 file_infoclass_size = FILE_ACCESS_INFORMATION_SIZE;
4808 case FILE_BASIC_INFORMATION:
4809 rc = get_file_basic_info(rsp, fp, work->response_buf);
4810 file_infoclass_size = FILE_BASIC_INFORMATION_SIZE;
4813 case FILE_STANDARD_INFORMATION:
4814 get_file_standard_info(rsp, fp, work->response_buf);
4815 file_infoclass_size = FILE_STANDARD_INFORMATION_SIZE;
4818 case FILE_ALIGNMENT_INFORMATION:
4819 get_file_alignment_info(rsp, work->response_buf);
4820 file_infoclass_size = FILE_ALIGNMENT_INFORMATION_SIZE;
4823 case FILE_ALL_INFORMATION:
4824 rc = get_file_all_info(work, rsp, fp, work->response_buf);
4825 file_infoclass_size = FILE_ALL_INFORMATION_SIZE;
4828 case FILE_ALTERNATE_NAME_INFORMATION:
4829 get_file_alternate_info(work, rsp, fp, work->response_buf);
4830 file_infoclass_size = FILE_ALTERNATE_NAME_INFORMATION_SIZE;
4833 case FILE_STREAM_INFORMATION:
4834 get_file_stream_info(work, rsp, fp, work->response_buf);
4835 file_infoclass_size = FILE_STREAM_INFORMATION_SIZE;
4838 case FILE_INTERNAL_INFORMATION:
4839 get_file_internal_info(rsp, fp, work->response_buf);
4840 file_infoclass_size = FILE_INTERNAL_INFORMATION_SIZE;
4843 case FILE_NETWORK_OPEN_INFORMATION:
4844 rc = get_file_network_open_info(rsp, fp, work->response_buf);
4845 file_infoclass_size = FILE_NETWORK_OPEN_INFORMATION_SIZE;
4848 case FILE_EA_INFORMATION:
4849 get_file_ea_info(rsp, work->response_buf);
4850 file_infoclass_size = FILE_EA_INFORMATION_SIZE;
4853 case FILE_FULL_EA_INFORMATION:
4854 rc = smb2_get_ea(work, fp, req, rsp, work->response_buf);
4855 file_infoclass_size = FILE_FULL_EA_INFORMATION_SIZE;
4858 case FILE_POSITION_INFORMATION:
4859 get_file_position_info(rsp, fp, work->response_buf);
4860 file_infoclass_size = FILE_POSITION_INFORMATION_SIZE;
4863 case FILE_MODE_INFORMATION:
4864 get_file_mode_info(rsp, fp, work->response_buf);
4865 file_infoclass_size = FILE_MODE_INFORMATION_SIZE;
4868 case FILE_COMPRESSION_INFORMATION:
4869 get_file_compression_info(rsp, fp, work->response_buf);
4870 file_infoclass_size = FILE_COMPRESSION_INFORMATION_SIZE;
4873 case FILE_ATTRIBUTE_TAG_INFORMATION:
4874 rc = get_file_attribute_tag_info(rsp, fp, work->response_buf);
4875 file_infoclass_size = FILE_ATTRIBUTE_TAG_INFORMATION_SIZE;
4877 case SMB_FIND_FILE_POSIX_INFO:
4878 if (!work->tcon->posix_extensions) {
4879 pr_err("client doesn't negotiate with SMB3.1.1 POSIX Extensions\n");
4882 file_infoclass_size = find_file_posix_info(rsp, fp,
4883 work->response_buf);
4887 ksmbd_debug(SMB, "fileinfoclass %d not supported yet\n",
4892 rc = buffer_check_err(le32_to_cpu(req->OutputBufferLength),
4893 rsp, work->response_buf,
4894 file_infoclass_size);
4895 ksmbd_fd_put(work, fp);
4899 static int smb2_get_info_filesystem(struct ksmbd_work *work,
4900 struct smb2_query_info_req *req,
4901 struct smb2_query_info_rsp *rsp)
4903 struct ksmbd_session *sess = work->sess;
4904 struct ksmbd_conn *conn = work->conn;
4905 struct ksmbd_share_config *share = work->tcon->share_conf;
4906 int fsinfoclass = 0;
4907 struct kstatfs stfs;
4910 int fs_infoclass_size = 0;
4912 rc = kern_path(share->path, LOOKUP_NO_SYMLINKS, &path);
4914 pr_err("cannot create vfs path\n");
4918 rc = vfs_statfs(&path, &stfs);
4920 pr_err("cannot do stat of path %s\n", share->path);
4925 fsinfoclass = req->FileInfoClass;
4927 switch (fsinfoclass) {
4928 case FS_DEVICE_INFORMATION:
4930 struct filesystem_device_info *info;
4932 info = (struct filesystem_device_info *)rsp->Buffer;
4934 info->DeviceType = cpu_to_le32(stfs.f_type);
4935 info->DeviceCharacteristics = cpu_to_le32(0x00000020);
4936 rsp->OutputBufferLength = cpu_to_le32(8);
4937 inc_rfc1001_len(work->response_buf, 8);
4938 fs_infoclass_size = FS_DEVICE_INFORMATION_SIZE;
4941 case FS_ATTRIBUTE_INFORMATION:
4943 struct filesystem_attribute_info *info;
4946 info = (struct filesystem_attribute_info *)rsp->Buffer;
4947 info->Attributes = cpu_to_le32(FILE_SUPPORTS_OBJECT_IDS |
4948 FILE_PERSISTENT_ACLS |
4949 FILE_UNICODE_ON_DISK |
4950 FILE_CASE_PRESERVED_NAMES |
4951 FILE_CASE_SENSITIVE_SEARCH |
4952 FILE_SUPPORTS_BLOCK_REFCOUNTING);
4954 info->Attributes |= cpu_to_le32(server_conf.share_fake_fscaps);
4956 info->MaxPathNameComponentLength = cpu_to_le32(stfs.f_namelen);
4957 len = smbConvertToUTF16((__le16 *)info->FileSystemName,
4958 "NTFS", PATH_MAX, conn->local_nls, 0);
4960 info->FileSystemNameLen = cpu_to_le32(len);
4961 sz = sizeof(struct filesystem_attribute_info) - 2 + len;
4962 rsp->OutputBufferLength = cpu_to_le32(sz);
4963 inc_rfc1001_len(work->response_buf, sz);
4964 fs_infoclass_size = FS_ATTRIBUTE_INFORMATION_SIZE;
4967 case FS_VOLUME_INFORMATION:
4969 struct filesystem_vol_info *info;
4971 unsigned int serial_crc = 0;
4973 info = (struct filesystem_vol_info *)(rsp->Buffer);
4974 info->VolumeCreationTime = 0;
4975 serial_crc = crc32_le(serial_crc, share->name,
4976 strlen(share->name));
4977 serial_crc = crc32_le(serial_crc, share->path,
4978 strlen(share->path));
4979 serial_crc = crc32_le(serial_crc, ksmbd_netbios_name(),
4980 strlen(ksmbd_netbios_name()));
4981 /* Taking dummy value of serial number*/
4982 info->SerialNumber = cpu_to_le32(serial_crc);
4983 len = smbConvertToUTF16((__le16 *)info->VolumeLabel,
4984 share->name, PATH_MAX,
4985 conn->local_nls, 0);
4987 info->VolumeLabelSize = cpu_to_le32(len);
4989 sz = sizeof(struct filesystem_vol_info) - 2 + len;
4990 rsp->OutputBufferLength = cpu_to_le32(sz);
4991 inc_rfc1001_len(work->response_buf, sz);
4992 fs_infoclass_size = FS_VOLUME_INFORMATION_SIZE;
4995 case FS_SIZE_INFORMATION:
4997 struct filesystem_info *info;
4999 info = (struct filesystem_info *)(rsp->Buffer);
5000 info->TotalAllocationUnits = cpu_to_le64(stfs.f_blocks);
5001 info->FreeAllocationUnits = 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(24);
5005 inc_rfc1001_len(work->response_buf, 24);
5006 fs_infoclass_size = FS_SIZE_INFORMATION_SIZE;
5009 case FS_FULL_SIZE_INFORMATION:
5011 struct smb2_fs_full_size_info *info;
5013 info = (struct smb2_fs_full_size_info *)(rsp->Buffer);
5014 info->TotalAllocationUnits = cpu_to_le64(stfs.f_blocks);
5015 info->CallerAvailableAllocationUnits =
5016 cpu_to_le64(stfs.f_bavail);
5017 info->ActualAvailableAllocationUnits =
5018 cpu_to_le64(stfs.f_bfree);
5019 info->SectorsPerAllocationUnit = cpu_to_le32(1);
5020 info->BytesPerSector = cpu_to_le32(stfs.f_bsize);
5021 rsp->OutputBufferLength = cpu_to_le32(32);
5022 inc_rfc1001_len(work->response_buf, 32);
5023 fs_infoclass_size = FS_FULL_SIZE_INFORMATION_SIZE;
5026 case FS_OBJECT_ID_INFORMATION:
5028 struct object_id_info *info;
5030 info = (struct object_id_info *)(rsp->Buffer);
5032 if (!user_guest(sess->user))
5033 memcpy(info->objid, user_passkey(sess->user), 16);
5035 memset(info->objid, 0, 16);
5037 info->extended_info.magic = cpu_to_le32(EXTENDED_INFO_MAGIC);
5038 info->extended_info.version = cpu_to_le32(1);
5039 info->extended_info.release = cpu_to_le32(1);
5040 info->extended_info.rel_date = 0;
5041 memcpy(info->extended_info.version_string, "1.1.0", strlen("1.1.0"));
5042 rsp->OutputBufferLength = cpu_to_le32(64);
5043 inc_rfc1001_len(work->response_buf, 64);
5044 fs_infoclass_size = FS_OBJECT_ID_INFORMATION_SIZE;
5047 case FS_SECTOR_SIZE_INFORMATION:
5049 struct smb3_fs_ss_info *info;
5050 unsigned int sector_size =
5051 min_t(unsigned int, path.mnt->mnt_sb->s_blocksize, 4096);
5053 info = (struct smb3_fs_ss_info *)(rsp->Buffer);
5055 info->LogicalBytesPerSector = cpu_to_le32(sector_size);
5056 info->PhysicalBytesPerSectorForAtomicity =
5057 cpu_to_le32(sector_size);
5058 info->PhysicalBytesPerSectorForPerf = cpu_to_le32(sector_size);
5059 info->FSEffPhysicalBytesPerSectorForAtomicity =
5060 cpu_to_le32(sector_size);
5061 info->Flags = cpu_to_le32(SSINFO_FLAGS_ALIGNED_DEVICE |
5062 SSINFO_FLAGS_PARTITION_ALIGNED_ON_DEVICE);
5063 info->ByteOffsetForSectorAlignment = 0;
5064 info->ByteOffsetForPartitionAlignment = 0;
5065 rsp->OutputBufferLength = cpu_to_le32(28);
5066 inc_rfc1001_len(work->response_buf, 28);
5067 fs_infoclass_size = FS_SECTOR_SIZE_INFORMATION_SIZE;
5070 case FS_CONTROL_INFORMATION:
5073 * TODO : The current implementation is based on
5074 * test result with win7(NTFS) server. It's need to
5075 * modify this to get valid Quota values
5078 struct smb2_fs_control_info *info;
5080 info = (struct smb2_fs_control_info *)(rsp->Buffer);
5081 info->FreeSpaceStartFiltering = 0;
5082 info->FreeSpaceThreshold = 0;
5083 info->FreeSpaceStopFiltering = 0;
5084 info->DefaultQuotaThreshold = cpu_to_le64(SMB2_NO_FID);
5085 info->DefaultQuotaLimit = cpu_to_le64(SMB2_NO_FID);
5087 rsp->OutputBufferLength = cpu_to_le32(48);
5088 inc_rfc1001_len(work->response_buf, 48);
5089 fs_infoclass_size = FS_CONTROL_INFORMATION_SIZE;
5092 case FS_POSIX_INFORMATION:
5094 struct filesystem_posix_info *info;
5096 if (!work->tcon->posix_extensions) {
5097 pr_err("client doesn't negotiate with SMB3.1.1 POSIX Extensions\n");
5100 info = (struct filesystem_posix_info *)(rsp->Buffer);
5101 info->OptimalTransferSize = cpu_to_le32(stfs.f_bsize);
5102 info->BlockSize = cpu_to_le32(stfs.f_bsize);
5103 info->TotalBlocks = cpu_to_le64(stfs.f_blocks);
5104 info->BlocksAvail = cpu_to_le64(stfs.f_bfree);
5105 info->UserBlocksAvail = cpu_to_le64(stfs.f_bavail);
5106 info->TotalFileNodes = cpu_to_le64(stfs.f_files);
5107 info->FreeFileNodes = cpu_to_le64(stfs.f_ffree);
5108 rsp->OutputBufferLength = cpu_to_le32(56);
5109 inc_rfc1001_len(work->response_buf, 56);
5110 fs_infoclass_size = FS_POSIX_INFORMATION_SIZE;
5118 rc = buffer_check_err(le32_to_cpu(req->OutputBufferLength),
5119 rsp, work->response_buf,
5125 static int smb2_get_info_sec(struct ksmbd_work *work,
5126 struct smb2_query_info_req *req,
5127 struct smb2_query_info_rsp *rsp)
5129 struct ksmbd_file *fp;
5130 struct mnt_idmap *idmap;
5131 struct user_namespace *user_ns;
5132 struct smb_ntsd *pntsd = (struct smb_ntsd *)rsp->Buffer, *ppntsd = NULL;
5133 struct smb_fattr fattr = {{0}};
5134 struct inode *inode;
5135 __u32 secdesclen = 0;
5136 unsigned int id = KSMBD_NO_FID, pid = KSMBD_NO_FID;
5137 int addition_info = le32_to_cpu(req->AdditionalInformation);
5138 int rc = 0, ppntsd_size = 0;
5140 if (addition_info & ~(OWNER_SECINFO | GROUP_SECINFO | DACL_SECINFO |
5141 PROTECTED_DACL_SECINFO |
5142 UNPROTECTED_DACL_SECINFO)) {
5143 ksmbd_debug(SMB, "Unsupported addition info: 0x%x)\n",
5146 pntsd->revision = cpu_to_le16(1);
5147 pntsd->type = cpu_to_le16(SELF_RELATIVE | DACL_PROTECTED);
5148 pntsd->osidoffset = 0;
5149 pntsd->gsidoffset = 0;
5150 pntsd->sacloffset = 0;
5151 pntsd->dacloffset = 0;
5153 secdesclen = sizeof(struct smb_ntsd);
5154 rsp->OutputBufferLength = cpu_to_le32(secdesclen);
5155 inc_rfc1001_len(work->response_buf, secdesclen);
5160 if (work->next_smb2_rcv_hdr_off) {
5161 if (!has_file_id(req->VolatileFileId)) {
5162 ksmbd_debug(SMB, "Compound request set FID = %llu\n",
5163 work->compound_fid);
5164 id = work->compound_fid;
5165 pid = work->compound_pfid;
5169 if (!has_file_id(id)) {
5170 id = req->VolatileFileId;
5171 pid = req->PersistentFileId;
5174 fp = ksmbd_lookup_fd_slow(work, id, pid);
5178 idmap = file_mnt_idmap(fp->filp);
5179 user_ns = mnt_idmap_owner(idmap);
5180 inode = file_inode(fp->filp);
5181 ksmbd_acls_fattr(&fattr, user_ns, inode);
5183 if (test_share_config_flag(work->tcon->share_conf,
5184 KSMBD_SHARE_FLAG_ACL_XATTR))
5185 ppntsd_size = ksmbd_vfs_get_sd_xattr(work->conn, idmap,
5186 fp->filp->f_path.dentry,
5189 /* Check if sd buffer size exceeds response buffer size */
5190 if (smb2_resp_buf_len(work, 8) > ppntsd_size)
5191 rc = build_sec_desc(user_ns, pntsd, ppntsd, ppntsd_size,
5192 addition_info, &secdesclen, &fattr);
5193 posix_acl_release(fattr.cf_acls);
5194 posix_acl_release(fattr.cf_dacls);
5196 ksmbd_fd_put(work, fp);
5200 rsp->OutputBufferLength = cpu_to_le32(secdesclen);
5201 inc_rfc1001_len(work->response_buf, secdesclen);
5206 * smb2_query_info() - handler for smb2 query info command
5207 * @work: smb work containing query info request buffer
5209 * Return: 0 on success, otherwise error
5211 int smb2_query_info(struct ksmbd_work *work)
5213 struct smb2_query_info_req *req;
5214 struct smb2_query_info_rsp *rsp;
5217 WORK_BUFFERS(work, req, rsp);
5219 ksmbd_debug(SMB, "GOT query info request\n");
5221 switch (req->InfoType) {
5222 case SMB2_O_INFO_FILE:
5223 ksmbd_debug(SMB, "GOT SMB2_O_INFO_FILE\n");
5224 rc = smb2_get_info_file(work, req, rsp);
5226 case SMB2_O_INFO_FILESYSTEM:
5227 ksmbd_debug(SMB, "GOT SMB2_O_INFO_FILESYSTEM\n");
5228 rc = smb2_get_info_filesystem(work, req, rsp);
5230 case SMB2_O_INFO_SECURITY:
5231 ksmbd_debug(SMB, "GOT SMB2_O_INFO_SECURITY\n");
5232 rc = smb2_get_info_sec(work, req, rsp);
5235 ksmbd_debug(SMB, "InfoType %d not supported yet\n",
5242 rsp->hdr.Status = STATUS_ACCESS_DENIED;
5243 else if (rc == -ENOENT)
5244 rsp->hdr.Status = STATUS_FILE_CLOSED;
5245 else if (rc == -EIO)
5246 rsp->hdr.Status = STATUS_UNEXPECTED_IO_ERROR;
5247 else if (rc == -EOPNOTSUPP || rsp->hdr.Status == 0)
5248 rsp->hdr.Status = STATUS_INVALID_INFO_CLASS;
5249 smb2_set_err_rsp(work);
5251 ksmbd_debug(SMB, "error while processing smb2 query rc = %d\n",
5255 rsp->StructureSize = cpu_to_le16(9);
5256 rsp->OutputBufferOffset = cpu_to_le16(72);
5257 inc_rfc1001_len(work->response_buf, 8);
5262 * smb2_close_pipe() - handler for closing IPC pipe
5263 * @work: smb work containing close request buffer
5267 static noinline int smb2_close_pipe(struct ksmbd_work *work)
5270 struct smb2_close_req *req = smb2_get_msg(work->request_buf);
5271 struct smb2_close_rsp *rsp = smb2_get_msg(work->response_buf);
5273 id = req->VolatileFileId;
5274 ksmbd_session_rpc_close(work->sess, id);
5276 rsp->StructureSize = cpu_to_le16(60);
5279 rsp->CreationTime = 0;
5280 rsp->LastAccessTime = 0;
5281 rsp->LastWriteTime = 0;
5282 rsp->ChangeTime = 0;
5283 rsp->AllocationSize = 0;
5285 rsp->Attributes = 0;
5286 inc_rfc1001_len(work->response_buf, 60);
5291 * smb2_close() - handler for smb2 close file command
5292 * @work: smb work containing close request buffer
5296 int smb2_close(struct ksmbd_work *work)
5298 u64 volatile_id = KSMBD_NO_FID;
5300 struct smb2_close_req *req;
5301 struct smb2_close_rsp *rsp;
5302 struct ksmbd_conn *conn = work->conn;
5303 struct ksmbd_file *fp;
5304 struct inode *inode;
5308 WORK_BUFFERS(work, req, rsp);
5310 if (test_share_config_flag(work->tcon->share_conf,
5311 KSMBD_SHARE_FLAG_PIPE)) {
5312 ksmbd_debug(SMB, "IPC pipe close request\n");
5313 return smb2_close_pipe(work);
5316 sess_id = le64_to_cpu(req->hdr.SessionId);
5317 if (req->hdr.Flags & SMB2_FLAGS_RELATED_OPERATIONS)
5318 sess_id = work->compound_sid;
5320 work->compound_sid = 0;
5321 if (check_session_id(conn, sess_id)) {
5322 work->compound_sid = sess_id;
5324 rsp->hdr.Status = STATUS_USER_SESSION_DELETED;
5325 if (req->hdr.Flags & SMB2_FLAGS_RELATED_OPERATIONS)
5326 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
5331 if (work->next_smb2_rcv_hdr_off &&
5332 !has_file_id(req->VolatileFileId)) {
5333 if (!has_file_id(work->compound_fid)) {
5334 /* file already closed, return FILE_CLOSED */
5335 ksmbd_debug(SMB, "file already closed\n");
5336 rsp->hdr.Status = STATUS_FILE_CLOSED;
5341 "Compound request set FID = %llu:%llu\n",
5343 work->compound_pfid);
5344 volatile_id = work->compound_fid;
5346 /* file closed, stored id is not valid anymore */
5347 work->compound_fid = KSMBD_NO_FID;
5348 work->compound_pfid = KSMBD_NO_FID;
5351 volatile_id = req->VolatileFileId;
5353 ksmbd_debug(SMB, "volatile_id = %llu\n", volatile_id);
5355 rsp->StructureSize = cpu_to_le16(60);
5358 if (req->Flags == SMB2_CLOSE_FLAG_POSTQUERY_ATTRIB) {
5359 fp = ksmbd_lookup_fd_fast(work, volatile_id);
5365 inode = file_inode(fp->filp);
5366 rsp->Flags = SMB2_CLOSE_FLAG_POSTQUERY_ATTRIB;
5367 rsp->AllocationSize = S_ISDIR(inode->i_mode) ? 0 :
5368 cpu_to_le64(inode->i_blocks << 9);
5369 rsp->EndOfFile = cpu_to_le64(inode->i_size);
5370 rsp->Attributes = fp->f_ci->m_fattr;
5371 rsp->CreationTime = cpu_to_le64(fp->create_time);
5372 time = ksmbd_UnixTimeToNT(inode->i_atime);
5373 rsp->LastAccessTime = cpu_to_le64(time);
5374 time = ksmbd_UnixTimeToNT(inode->i_mtime);
5375 rsp->LastWriteTime = cpu_to_le64(time);
5376 time = ksmbd_UnixTimeToNT(inode->i_ctime);
5377 rsp->ChangeTime = cpu_to_le64(time);
5378 ksmbd_fd_put(work, fp);
5381 rsp->AllocationSize = 0;
5383 rsp->Attributes = 0;
5384 rsp->CreationTime = 0;
5385 rsp->LastAccessTime = 0;
5386 rsp->LastWriteTime = 0;
5387 rsp->ChangeTime = 0;
5390 err = ksmbd_close_fd(work, volatile_id);
5393 if (rsp->hdr.Status == 0)
5394 rsp->hdr.Status = STATUS_FILE_CLOSED;
5395 smb2_set_err_rsp(work);
5397 inc_rfc1001_len(work->response_buf, 60);
5404 * smb2_echo() - handler for smb2 echo(ping) command
5405 * @work: smb work containing echo request buffer
5409 int smb2_echo(struct ksmbd_work *work)
5411 struct smb2_echo_rsp *rsp = smb2_get_msg(work->response_buf);
5413 rsp->StructureSize = cpu_to_le16(4);
5415 inc_rfc1001_len(work->response_buf, 4);
5419 static int smb2_rename(struct ksmbd_work *work,
5420 struct ksmbd_file *fp,
5421 struct mnt_idmap *idmap,
5422 struct smb2_file_rename_info *file_info,
5423 struct nls_table *local_nls)
5425 struct ksmbd_share_config *share = fp->tcon->share_conf;
5426 char *new_name = NULL, *abs_oldname = NULL, *old_name = NULL;
5427 char *pathname = NULL;
5429 bool file_present = true;
5432 ksmbd_debug(SMB, "setting FILE_RENAME_INFO\n");
5433 pathname = kmalloc(PATH_MAX, GFP_KERNEL);
5437 abs_oldname = file_path(fp->filp, pathname, PATH_MAX);
5438 if (IS_ERR(abs_oldname)) {
5442 old_name = strrchr(abs_oldname, '/');
5443 if (old_name && old_name[1] != '\0') {
5446 ksmbd_debug(SMB, "can't get last component in path %s\n",
5452 new_name = smb2_get_name(file_info->FileName,
5453 le32_to_cpu(file_info->FileNameLength),
5455 if (IS_ERR(new_name)) {
5456 rc = PTR_ERR(new_name);
5460 if (strchr(new_name, ':')) {
5462 char *xattr_stream_name, *stream_name = NULL;
5463 size_t xattr_stream_size;
5466 rc = parse_stream_name(new_name, &stream_name, &s_type);
5470 len = strlen(new_name);
5471 if (len > 0 && new_name[len - 1] != '/') {
5472 pr_err("not allow base filename in rename\n");
5477 rc = ksmbd_vfs_xattr_stream_name(stream_name,
5484 rc = ksmbd_vfs_setxattr(idmap,
5485 fp->filp->f_path.dentry,
5489 pr_err("failed to store stream name in xattr: %d\n",
5498 ksmbd_debug(SMB, "new name %s\n", new_name);
5499 rc = ksmbd_vfs_kern_path(work, new_name, LOOKUP_NO_SYMLINKS, &path, 1);
5503 file_present = false;
5508 if (ksmbd_share_veto_filename(share, new_name)) {
5510 ksmbd_debug(SMB, "Can't rename vetoed file: %s\n", new_name);
5514 if (file_info->ReplaceIfExists) {
5516 rc = ksmbd_vfs_remove_file(work, new_name);
5518 if (rc != -ENOTEMPTY)
5520 ksmbd_debug(SMB, "cannot delete %s, rc %d\n",
5527 strncmp(old_name, path.dentry->d_name.name, strlen(old_name))) {
5530 "cannot rename already existing file\n");
5535 rc = ksmbd_vfs_fp_rename(work, fp, new_name);
5538 if (!IS_ERR(new_name))
5543 static int smb2_create_link(struct ksmbd_work *work,
5544 struct ksmbd_share_config *share,
5545 struct smb2_file_link_info *file_info,
5546 unsigned int buf_len, struct file *filp,
5547 struct nls_table *local_nls)
5549 char *link_name = NULL, *target_name = NULL, *pathname = NULL;
5551 bool file_present = true;
5554 if (buf_len < (u64)sizeof(struct smb2_file_link_info) +
5555 le32_to_cpu(file_info->FileNameLength))
5558 ksmbd_debug(SMB, "setting FILE_LINK_INFORMATION\n");
5559 pathname = kmalloc(PATH_MAX, GFP_KERNEL);
5563 link_name = smb2_get_name(file_info->FileName,
5564 le32_to_cpu(file_info->FileNameLength),
5566 if (IS_ERR(link_name) || S_ISDIR(file_inode(filp)->i_mode)) {
5571 ksmbd_debug(SMB, "link name is %s\n", link_name);
5572 target_name = file_path(filp, pathname, PATH_MAX);
5573 if (IS_ERR(target_name)) {
5578 ksmbd_debug(SMB, "target name is %s\n", target_name);
5579 rc = ksmbd_vfs_kern_path(work, link_name, LOOKUP_NO_SYMLINKS, &path, 0);
5583 file_present = false;
5588 if (file_info->ReplaceIfExists) {
5590 rc = ksmbd_vfs_remove_file(work, link_name);
5593 ksmbd_debug(SMB, "cannot delete %s\n",
5601 ksmbd_debug(SMB, "link already exists\n");
5606 rc = ksmbd_vfs_link(work, target_name, link_name);
5610 if (!IS_ERR(link_name))
5616 static int set_file_basic_info(struct ksmbd_file *fp,
5617 struct smb2_file_basic_info *file_info,
5618 struct ksmbd_share_config *share)
5622 struct inode *inode;
5623 struct mnt_idmap *idmap;
5626 if (!(fp->daccess & FILE_WRITE_ATTRIBUTES_LE))
5631 inode = file_inode(filp);
5632 idmap = file_mnt_idmap(filp);
5634 if (file_info->CreationTime)
5635 fp->create_time = le64_to_cpu(file_info->CreationTime);
5637 if (file_info->LastAccessTime) {
5638 attrs.ia_atime = ksmbd_NTtimeToUnix(file_info->LastAccessTime);
5639 attrs.ia_valid |= (ATTR_ATIME | ATTR_ATIME_SET);
5642 attrs.ia_valid |= ATTR_CTIME;
5643 if (file_info->ChangeTime)
5644 attrs.ia_ctime = ksmbd_NTtimeToUnix(file_info->ChangeTime);
5646 attrs.ia_ctime = inode->i_ctime;
5648 if (file_info->LastWriteTime) {
5649 attrs.ia_mtime = ksmbd_NTtimeToUnix(file_info->LastWriteTime);
5650 attrs.ia_valid |= (ATTR_MTIME | ATTR_MTIME_SET);
5653 if (file_info->Attributes) {
5654 if (!S_ISDIR(inode->i_mode) &&
5655 file_info->Attributes & FILE_ATTRIBUTE_DIRECTORY_LE) {
5656 pr_err("can't change a file to a directory\n");
5660 if (!(S_ISDIR(inode->i_mode) && file_info->Attributes == FILE_ATTRIBUTE_NORMAL_LE))
5661 fp->f_ci->m_fattr = file_info->Attributes |
5662 (fp->f_ci->m_fattr & FILE_ATTRIBUTE_DIRECTORY_LE);
5665 if (test_share_config_flag(share, KSMBD_SHARE_FLAG_STORE_DOS_ATTRS) &&
5666 (file_info->CreationTime || file_info->Attributes)) {
5667 struct xattr_dos_attrib da = {0};
5670 da.itime = fp->itime;
5671 da.create_time = fp->create_time;
5672 da.attr = le32_to_cpu(fp->f_ci->m_fattr);
5673 da.flags = XATTR_DOSINFO_ATTRIB | XATTR_DOSINFO_CREATE_TIME |
5674 XATTR_DOSINFO_ITIME;
5676 rc = ksmbd_vfs_set_dos_attrib_xattr(idmap,
5677 filp->f_path.dentry, &da);
5680 "failed to restore file attribute in EA\n");
5684 if (attrs.ia_valid) {
5685 struct dentry *dentry = filp->f_path.dentry;
5686 struct inode *inode = d_inode(dentry);
5688 if (IS_IMMUTABLE(inode) || IS_APPEND(inode))
5692 inode->i_ctime = attrs.ia_ctime;
5693 attrs.ia_valid &= ~ATTR_CTIME;
5694 rc = notify_change(idmap, dentry, &attrs, NULL);
5695 inode_unlock(inode);
5700 static int set_file_allocation_info(struct ksmbd_work *work,
5701 struct ksmbd_file *fp,
5702 struct smb2_file_alloc_info *file_alloc_info)
5705 * TODO : It's working fine only when store dos attributes
5706 * is not yes. need to implement a logic which works
5707 * properly with any smb.conf option
5711 struct inode *inode;
5714 if (!(fp->daccess & FILE_WRITE_DATA_LE))
5717 alloc_blks = (le64_to_cpu(file_alloc_info->AllocationSize) + 511) >> 9;
5718 inode = file_inode(fp->filp);
5720 if (alloc_blks > inode->i_blocks) {
5721 smb_break_all_levII_oplock(work, fp, 1);
5722 rc = vfs_fallocate(fp->filp, FALLOC_FL_KEEP_SIZE, 0,
5724 if (rc && rc != -EOPNOTSUPP) {
5725 pr_err("vfs_fallocate is failed : %d\n", rc);
5728 } else if (alloc_blks < inode->i_blocks) {
5732 * Allocation size could be smaller than original one
5733 * which means allocated blocks in file should be
5734 * deallocated. use truncate to cut out it, but inode
5735 * size is also updated with truncate offset.
5736 * inode size is retained by backup inode size.
5738 size = i_size_read(inode);
5739 rc = ksmbd_vfs_truncate(work, fp, alloc_blks * 512);
5741 pr_err("truncate failed!, err %d\n", rc);
5744 if (size < alloc_blks * 512)
5745 i_size_write(inode, size);
5750 static int set_end_of_file_info(struct ksmbd_work *work, struct ksmbd_file *fp,
5751 struct smb2_file_eof_info *file_eof_info)
5754 struct inode *inode;
5757 if (!(fp->daccess & FILE_WRITE_DATA_LE))
5760 newsize = le64_to_cpu(file_eof_info->EndOfFile);
5761 inode = file_inode(fp->filp);
5764 * If FILE_END_OF_FILE_INFORMATION of set_info_file is called
5765 * on FAT32 shared device, truncate execution time is too long
5766 * and network error could cause from windows client. because
5767 * truncate of some filesystem like FAT32 fill zero data in
5770 if (inode->i_sb->s_magic != MSDOS_SUPER_MAGIC) {
5771 ksmbd_debug(SMB, "truncated to newsize %lld\n", newsize);
5772 rc = ksmbd_vfs_truncate(work, fp, newsize);
5774 ksmbd_debug(SMB, "truncate failed!, err %d\n", rc);
5783 static int set_rename_info(struct ksmbd_work *work, struct ksmbd_file *fp,
5784 struct smb2_file_rename_info *rename_info,
5785 unsigned int buf_len)
5787 struct mnt_idmap *idmap;
5788 struct ksmbd_file *parent_fp;
5789 struct dentry *parent;
5790 struct dentry *dentry = fp->filp->f_path.dentry;
5793 if (!(fp->daccess & FILE_DELETE_LE)) {
5794 pr_err("no right to delete : 0x%x\n", fp->daccess);
5798 if (buf_len < (u64)sizeof(struct smb2_file_rename_info) +
5799 le32_to_cpu(rename_info->FileNameLength))
5802 idmap = file_mnt_idmap(fp->filp);
5803 if (ksmbd_stream_fd(fp))
5806 parent = dget_parent(dentry);
5807 ret = ksmbd_vfs_lock_parent(idmap, parent, dentry);
5813 parent_fp = ksmbd_lookup_fd_inode(d_inode(parent));
5814 inode_unlock(d_inode(parent));
5818 if (parent_fp->daccess & FILE_DELETE_LE) {
5819 pr_err("parent dir is opened with delete access\n");
5820 ksmbd_fd_put(work, parent_fp);
5823 ksmbd_fd_put(work, parent_fp);
5826 return smb2_rename(work, fp, idmap, rename_info,
5827 work->conn->local_nls);
5830 static int set_file_disposition_info(struct ksmbd_file *fp,
5831 struct smb2_file_disposition_info *file_info)
5833 struct inode *inode;
5835 if (!(fp->daccess & FILE_DELETE_LE)) {
5836 pr_err("no right to delete : 0x%x\n", fp->daccess);
5840 inode = file_inode(fp->filp);
5841 if (file_info->DeletePending) {
5842 if (S_ISDIR(inode->i_mode) &&
5843 ksmbd_vfs_empty_dir(fp) == -ENOTEMPTY)
5845 ksmbd_set_inode_pending_delete(fp);
5847 ksmbd_clear_inode_pending_delete(fp);
5852 static int set_file_position_info(struct ksmbd_file *fp,
5853 struct smb2_file_pos_info *file_info)
5855 loff_t current_byte_offset;
5856 unsigned long sector_size;
5857 struct inode *inode;
5859 inode = file_inode(fp->filp);
5860 current_byte_offset = le64_to_cpu(file_info->CurrentByteOffset);
5861 sector_size = inode->i_sb->s_blocksize;
5863 if (current_byte_offset < 0 ||
5864 (fp->coption == FILE_NO_INTERMEDIATE_BUFFERING_LE &&
5865 current_byte_offset & (sector_size - 1))) {
5866 pr_err("CurrentByteOffset is not valid : %llu\n",
5867 current_byte_offset);
5871 fp->filp->f_pos = current_byte_offset;
5875 static int set_file_mode_info(struct ksmbd_file *fp,
5876 struct smb2_file_mode_info *file_info)
5880 mode = file_info->Mode;
5882 if ((mode & ~FILE_MODE_INFO_MASK)) {
5883 pr_err("Mode is not valid : 0x%x\n", le32_to_cpu(mode));
5888 * TODO : need to implement consideration for
5889 * FILE_SYNCHRONOUS_IO_ALERT and FILE_SYNCHRONOUS_IO_NONALERT
5891 ksmbd_vfs_set_fadvise(fp->filp, mode);
5897 * smb2_set_info_file() - handler for smb2 set info command
5898 * @work: smb work containing set info command buffer
5899 * @fp: ksmbd_file pointer
5900 * @req: request buffer pointer
5901 * @share: ksmbd_share_config pointer
5903 * Return: 0 on success, otherwise error
5904 * TODO: need to implement an error handling for STATUS_INFO_LENGTH_MISMATCH
5906 static int smb2_set_info_file(struct ksmbd_work *work, struct ksmbd_file *fp,
5907 struct smb2_set_info_req *req,
5908 struct ksmbd_share_config *share)
5910 unsigned int buf_len = le32_to_cpu(req->BufferLength);
5912 switch (req->FileInfoClass) {
5913 case FILE_BASIC_INFORMATION:
5915 if (buf_len < sizeof(struct smb2_file_basic_info))
5918 return set_file_basic_info(fp, (struct smb2_file_basic_info *)req->Buffer, share);
5920 case FILE_ALLOCATION_INFORMATION:
5922 if (buf_len < sizeof(struct smb2_file_alloc_info))
5925 return set_file_allocation_info(work, fp,
5926 (struct smb2_file_alloc_info *)req->Buffer);
5928 case FILE_END_OF_FILE_INFORMATION:
5930 if (buf_len < sizeof(struct smb2_file_eof_info))
5933 return set_end_of_file_info(work, fp,
5934 (struct smb2_file_eof_info *)req->Buffer);
5936 case FILE_RENAME_INFORMATION:
5938 if (!test_tree_conn_flag(work->tcon, KSMBD_TREE_CONN_FLAG_WRITABLE)) {
5940 "User does not have write permission\n");
5944 if (buf_len < sizeof(struct smb2_file_rename_info))
5947 return set_rename_info(work, fp,
5948 (struct smb2_file_rename_info *)req->Buffer,
5951 case FILE_LINK_INFORMATION:
5953 if (buf_len < sizeof(struct smb2_file_link_info))
5956 return smb2_create_link(work, work->tcon->share_conf,
5957 (struct smb2_file_link_info *)req->Buffer,
5959 work->conn->local_nls);
5961 case FILE_DISPOSITION_INFORMATION:
5963 if (!test_tree_conn_flag(work->tcon, KSMBD_TREE_CONN_FLAG_WRITABLE)) {
5965 "User does not have write permission\n");
5969 if (buf_len < sizeof(struct smb2_file_disposition_info))
5972 return set_file_disposition_info(fp,
5973 (struct smb2_file_disposition_info *)req->Buffer);
5975 case FILE_FULL_EA_INFORMATION:
5977 if (!(fp->daccess & FILE_WRITE_EA_LE)) {
5978 pr_err("Not permitted to write ext attr: 0x%x\n",
5983 if (buf_len < sizeof(struct smb2_ea_info))
5986 return smb2_set_ea((struct smb2_ea_info *)req->Buffer,
5987 buf_len, &fp->filp->f_path);
5989 case FILE_POSITION_INFORMATION:
5991 if (buf_len < sizeof(struct smb2_file_pos_info))
5994 return set_file_position_info(fp, (struct smb2_file_pos_info *)req->Buffer);
5996 case FILE_MODE_INFORMATION:
5998 if (buf_len < sizeof(struct smb2_file_mode_info))
6001 return set_file_mode_info(fp, (struct smb2_file_mode_info *)req->Buffer);
6005 pr_err("Unimplemented Fileinfoclass :%d\n", req->FileInfoClass);
6009 static int smb2_set_info_sec(struct ksmbd_file *fp, int addition_info,
6010 char *buffer, int buf_len)
6012 struct smb_ntsd *pntsd = (struct smb_ntsd *)buffer;
6014 fp->saccess |= FILE_SHARE_DELETE_LE;
6016 return set_info_sec(fp->conn, fp->tcon, &fp->filp->f_path, pntsd,
6021 * smb2_set_info() - handler for smb2 set info command handler
6022 * @work: smb work containing set info request buffer
6024 * Return: 0 on success, otherwise error
6026 int smb2_set_info(struct ksmbd_work *work)
6028 struct smb2_set_info_req *req;
6029 struct smb2_set_info_rsp *rsp;
6030 struct ksmbd_file *fp;
6032 unsigned int id = KSMBD_NO_FID, pid = KSMBD_NO_FID;
6034 ksmbd_debug(SMB, "Received set info request\n");
6036 if (work->next_smb2_rcv_hdr_off) {
6037 req = ksmbd_req_buf_next(work);
6038 rsp = ksmbd_resp_buf_next(work);
6039 if (!has_file_id(req->VolatileFileId)) {
6040 ksmbd_debug(SMB, "Compound request set FID = %llu\n",
6041 work->compound_fid);
6042 id = work->compound_fid;
6043 pid = work->compound_pfid;
6046 req = smb2_get_msg(work->request_buf);
6047 rsp = smb2_get_msg(work->response_buf);
6050 if (!has_file_id(id)) {
6051 id = req->VolatileFileId;
6052 pid = req->PersistentFileId;
6055 fp = ksmbd_lookup_fd_slow(work, id, pid);
6057 ksmbd_debug(SMB, "Invalid id for close: %u\n", id);
6062 switch (req->InfoType) {
6063 case SMB2_O_INFO_FILE:
6064 ksmbd_debug(SMB, "GOT SMB2_O_INFO_FILE\n");
6065 rc = smb2_set_info_file(work, fp, req, work->tcon->share_conf);
6067 case SMB2_O_INFO_SECURITY:
6068 ksmbd_debug(SMB, "GOT SMB2_O_INFO_SECURITY\n");
6069 if (ksmbd_override_fsids(work)) {
6073 rc = smb2_set_info_sec(fp,
6074 le32_to_cpu(req->AdditionalInformation),
6076 le32_to_cpu(req->BufferLength));
6077 ksmbd_revert_fsids(work);
6086 rsp->StructureSize = cpu_to_le16(2);
6087 inc_rfc1001_len(work->response_buf, 2);
6088 ksmbd_fd_put(work, fp);
6092 if (rc == -EACCES || rc == -EPERM || rc == -EXDEV)
6093 rsp->hdr.Status = STATUS_ACCESS_DENIED;
6094 else if (rc == -EINVAL)
6095 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
6096 else if (rc == -ESHARE)
6097 rsp->hdr.Status = STATUS_SHARING_VIOLATION;
6098 else if (rc == -ENOENT)
6099 rsp->hdr.Status = STATUS_OBJECT_NAME_INVALID;
6100 else if (rc == -EBUSY || rc == -ENOTEMPTY)
6101 rsp->hdr.Status = STATUS_DIRECTORY_NOT_EMPTY;
6102 else if (rc == -EAGAIN)
6103 rsp->hdr.Status = STATUS_FILE_LOCK_CONFLICT;
6104 else if (rc == -EBADF || rc == -ESTALE)
6105 rsp->hdr.Status = STATUS_INVALID_HANDLE;
6106 else if (rc == -EEXIST)
6107 rsp->hdr.Status = STATUS_OBJECT_NAME_COLLISION;
6108 else if (rsp->hdr.Status == 0 || rc == -EOPNOTSUPP)
6109 rsp->hdr.Status = STATUS_INVALID_INFO_CLASS;
6110 smb2_set_err_rsp(work);
6111 ksmbd_fd_put(work, fp);
6112 ksmbd_debug(SMB, "error while processing smb2 query rc = %d\n", rc);
6117 * smb2_read_pipe() - handler for smb2 read from IPC pipe
6118 * @work: smb work containing read IPC pipe command buffer
6120 * Return: 0 on success, otherwise error
6122 static noinline int smb2_read_pipe(struct ksmbd_work *work)
6124 int nbytes = 0, err;
6126 struct ksmbd_rpc_command *rpc_resp;
6127 struct smb2_read_req *req = smb2_get_msg(work->request_buf);
6128 struct smb2_read_rsp *rsp = smb2_get_msg(work->response_buf);
6130 id = req->VolatileFileId;
6132 inc_rfc1001_len(work->response_buf, 16);
6133 rpc_resp = ksmbd_rpc_read(work->sess, id);
6135 if (rpc_resp->flags != KSMBD_RPC_OK) {
6140 work->aux_payload_buf =
6141 kvmalloc(rpc_resp->payload_sz, GFP_KERNEL | __GFP_ZERO);
6142 if (!work->aux_payload_buf) {
6147 memcpy(work->aux_payload_buf, rpc_resp->payload,
6148 rpc_resp->payload_sz);
6150 nbytes = rpc_resp->payload_sz;
6151 work->resp_hdr_sz = get_rfc1002_len(work->response_buf) + 4;
6152 work->aux_payload_sz = nbytes;
6156 rsp->StructureSize = cpu_to_le16(17);
6157 rsp->DataOffset = 80;
6159 rsp->DataLength = cpu_to_le32(nbytes);
6160 rsp->DataRemaining = 0;
6162 inc_rfc1001_len(work->response_buf, nbytes);
6166 rsp->hdr.Status = STATUS_UNEXPECTED_IO_ERROR;
6167 smb2_set_err_rsp(work);
6172 static int smb2_set_remote_key_for_rdma(struct ksmbd_work *work,
6173 struct smb2_buffer_desc_v1 *desc,
6175 __le16 ChannelInfoLength)
6177 unsigned int i, ch_count;
6179 if (work->conn->dialect == SMB30_PROT_ID &&
6180 Channel != SMB2_CHANNEL_RDMA_V1)
6183 ch_count = le16_to_cpu(ChannelInfoLength) / sizeof(*desc);
6184 if (ksmbd_debug_types & KSMBD_DEBUG_RDMA) {
6185 for (i = 0; i < ch_count; i++) {
6186 pr_info("RDMA r/w request %#x: token %#x, length %#x\n",
6188 le32_to_cpu(desc[i].token),
6189 le32_to_cpu(desc[i].length));
6195 work->need_invalidate_rkey =
6196 (Channel == SMB2_CHANNEL_RDMA_V1_INVALIDATE);
6197 if (Channel == SMB2_CHANNEL_RDMA_V1_INVALIDATE)
6198 work->remote_key = le32_to_cpu(desc->token);
6202 static ssize_t smb2_read_rdma_channel(struct ksmbd_work *work,
6203 struct smb2_read_req *req, void *data_buf,
6208 err = ksmbd_conn_rdma_write(work->conn, data_buf, length,
6209 (struct smb2_buffer_desc_v1 *)
6210 ((char *)req + le16_to_cpu(req->ReadChannelInfoOffset)),
6211 le16_to_cpu(req->ReadChannelInfoLength));
6219 * smb2_read() - handler for smb2 read from file
6220 * @work: smb work containing read command buffer
6222 * Return: 0 on success, otherwise error
6224 int smb2_read(struct ksmbd_work *work)
6226 struct ksmbd_conn *conn = work->conn;
6227 struct smb2_read_req *req;
6228 struct smb2_read_rsp *rsp;
6229 struct ksmbd_file *fp = NULL;
6231 size_t length, mincount;
6232 ssize_t nbytes = 0, remain_bytes = 0;
6234 bool is_rdma_channel = false;
6235 unsigned int max_read_size = conn->vals->max_read_size;
6237 WORK_BUFFERS(work, req, rsp);
6239 if (test_share_config_flag(work->tcon->share_conf,
6240 KSMBD_SHARE_FLAG_PIPE)) {
6241 ksmbd_debug(SMB, "IPC pipe read request\n");
6242 return smb2_read_pipe(work);
6245 if (req->Channel == SMB2_CHANNEL_RDMA_V1_INVALIDATE ||
6246 req->Channel == SMB2_CHANNEL_RDMA_V1) {
6247 is_rdma_channel = true;
6248 max_read_size = get_smbd_max_read_write_size();
6251 if (is_rdma_channel == true) {
6252 unsigned int ch_offset = le16_to_cpu(req->ReadChannelInfoOffset);
6254 if (ch_offset < offsetof(struct smb2_read_req, Buffer)) {
6258 err = smb2_set_remote_key_for_rdma(work,
6259 (struct smb2_buffer_desc_v1 *)
6260 ((char *)req + ch_offset),
6262 req->ReadChannelInfoLength);
6267 fp = ksmbd_lookup_fd_slow(work, req->VolatileFileId, req->PersistentFileId);
6273 if (!(fp->daccess & (FILE_READ_DATA_LE | FILE_READ_ATTRIBUTES_LE))) {
6274 pr_err("Not permitted to read : 0x%x\n", fp->daccess);
6279 offset = le64_to_cpu(req->Offset);
6280 length = le32_to_cpu(req->Length);
6281 mincount = le32_to_cpu(req->MinimumCount);
6283 if (length > max_read_size) {
6284 ksmbd_debug(SMB, "limiting read size to max size(%u)\n",
6290 ksmbd_debug(SMB, "filename %pD, offset %lld, len %zu\n",
6291 fp->filp, offset, length);
6293 work->aux_payload_buf = kvmalloc(length, GFP_KERNEL | __GFP_ZERO);
6294 if (!work->aux_payload_buf) {
6299 nbytes = ksmbd_vfs_read(work, fp, length, &offset);
6305 if ((nbytes == 0 && length != 0) || nbytes < mincount) {
6306 kvfree(work->aux_payload_buf);
6307 work->aux_payload_buf = NULL;
6308 rsp->hdr.Status = STATUS_END_OF_FILE;
6309 smb2_set_err_rsp(work);
6310 ksmbd_fd_put(work, fp);
6314 ksmbd_debug(SMB, "nbytes %zu, offset %lld mincount %zu\n",
6315 nbytes, offset, mincount);
6317 if (is_rdma_channel == true) {
6318 /* write data to the client using rdma channel */
6319 remain_bytes = smb2_read_rdma_channel(work, req,
6320 work->aux_payload_buf,
6322 kvfree(work->aux_payload_buf);
6323 work->aux_payload_buf = NULL;
6326 if (remain_bytes < 0) {
6327 err = (int)remain_bytes;
6332 rsp->StructureSize = cpu_to_le16(17);
6333 rsp->DataOffset = 80;
6335 rsp->DataLength = cpu_to_le32(nbytes);
6336 rsp->DataRemaining = cpu_to_le32(remain_bytes);
6338 inc_rfc1001_len(work->response_buf, 16);
6339 work->resp_hdr_sz = get_rfc1002_len(work->response_buf) + 4;
6340 work->aux_payload_sz = nbytes;
6341 inc_rfc1001_len(work->response_buf, nbytes);
6342 ksmbd_fd_put(work, fp);
6348 rsp->hdr.Status = STATUS_INVALID_DEVICE_REQUEST;
6349 else if (err == -EAGAIN)
6350 rsp->hdr.Status = STATUS_FILE_LOCK_CONFLICT;
6351 else if (err == -ENOENT)
6352 rsp->hdr.Status = STATUS_FILE_CLOSED;
6353 else if (err == -EACCES)
6354 rsp->hdr.Status = STATUS_ACCESS_DENIED;
6355 else if (err == -ESHARE)
6356 rsp->hdr.Status = STATUS_SHARING_VIOLATION;
6357 else if (err == -EINVAL)
6358 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
6360 rsp->hdr.Status = STATUS_INVALID_HANDLE;
6362 smb2_set_err_rsp(work);
6364 ksmbd_fd_put(work, fp);
6369 * smb2_write_pipe() - handler for smb2 write on IPC pipe
6370 * @work: smb work containing write IPC pipe command buffer
6372 * Return: 0 on success, otherwise error
6374 static noinline int smb2_write_pipe(struct ksmbd_work *work)
6376 struct smb2_write_req *req = smb2_get_msg(work->request_buf);
6377 struct smb2_write_rsp *rsp = smb2_get_msg(work->response_buf);
6378 struct ksmbd_rpc_command *rpc_resp;
6380 int err = 0, ret = 0;
6384 length = le32_to_cpu(req->Length);
6385 id = req->VolatileFileId;
6387 if ((u64)le16_to_cpu(req->DataOffset) + length >
6388 get_rfc1002_len(work->request_buf)) {
6389 pr_err("invalid write data offset %u, smb_len %u\n",
6390 le16_to_cpu(req->DataOffset),
6391 get_rfc1002_len(work->request_buf));
6396 data_buf = (char *)(((char *)&req->hdr.ProtocolId) +
6397 le16_to_cpu(req->DataOffset));
6399 rpc_resp = ksmbd_rpc_write(work->sess, id, data_buf, length);
6401 if (rpc_resp->flags == KSMBD_RPC_ENOTIMPLEMENTED) {
6402 rsp->hdr.Status = STATUS_NOT_SUPPORTED;
6404 smb2_set_err_rsp(work);
6407 if (rpc_resp->flags != KSMBD_RPC_OK) {
6408 rsp->hdr.Status = STATUS_INVALID_HANDLE;
6409 smb2_set_err_rsp(work);
6416 rsp->StructureSize = cpu_to_le16(17);
6417 rsp->DataOffset = 0;
6419 rsp->DataLength = cpu_to_le32(length);
6420 rsp->DataRemaining = 0;
6422 inc_rfc1001_len(work->response_buf, 16);
6426 rsp->hdr.Status = STATUS_INVALID_HANDLE;
6427 smb2_set_err_rsp(work);
6433 static ssize_t smb2_write_rdma_channel(struct ksmbd_work *work,
6434 struct smb2_write_req *req,
6435 struct ksmbd_file *fp,
6436 loff_t offset, size_t length, bool sync)
6442 data_buf = kvmalloc(length, GFP_KERNEL | __GFP_ZERO);
6446 ret = ksmbd_conn_rdma_read(work->conn, data_buf, length,
6447 (struct smb2_buffer_desc_v1 *)
6448 ((char *)req + le16_to_cpu(req->WriteChannelInfoOffset)),
6449 le16_to_cpu(req->WriteChannelInfoLength));
6455 ret = ksmbd_vfs_write(work, fp, data_buf, length, &offset, sync, &nbytes);
6464 * smb2_write() - handler for smb2 write from file
6465 * @work: smb work containing write command buffer
6467 * Return: 0 on success, otherwise error
6469 int smb2_write(struct ksmbd_work *work)
6471 struct smb2_write_req *req;
6472 struct smb2_write_rsp *rsp;
6473 struct ksmbd_file *fp = NULL;
6478 bool writethrough = false, is_rdma_channel = false;
6480 unsigned int max_write_size = work->conn->vals->max_write_size;
6482 WORK_BUFFERS(work, req, rsp);
6484 if (test_share_config_flag(work->tcon->share_conf, KSMBD_SHARE_FLAG_PIPE)) {
6485 ksmbd_debug(SMB, "IPC pipe write request\n");
6486 return smb2_write_pipe(work);
6489 offset = le64_to_cpu(req->Offset);
6490 length = le32_to_cpu(req->Length);
6492 if (req->Channel == SMB2_CHANNEL_RDMA_V1 ||
6493 req->Channel == SMB2_CHANNEL_RDMA_V1_INVALIDATE) {
6494 is_rdma_channel = true;
6495 max_write_size = get_smbd_max_read_write_size();
6496 length = le32_to_cpu(req->RemainingBytes);
6499 if (is_rdma_channel == true) {
6500 unsigned int ch_offset = le16_to_cpu(req->WriteChannelInfoOffset);
6502 if (req->Length != 0 || req->DataOffset != 0 ||
6503 ch_offset < offsetof(struct smb2_write_req, Buffer)) {
6507 err = smb2_set_remote_key_for_rdma(work,
6508 (struct smb2_buffer_desc_v1 *)
6509 ((char *)req + ch_offset),
6511 req->WriteChannelInfoLength);
6516 if (!test_tree_conn_flag(work->tcon, KSMBD_TREE_CONN_FLAG_WRITABLE)) {
6517 ksmbd_debug(SMB, "User does not have write permission\n");
6522 fp = ksmbd_lookup_fd_slow(work, req->VolatileFileId, req->PersistentFileId);
6528 if (!(fp->daccess & (FILE_WRITE_DATA_LE | FILE_READ_ATTRIBUTES_LE))) {
6529 pr_err("Not permitted to write : 0x%x\n", fp->daccess);
6534 if (length > max_write_size) {
6535 ksmbd_debug(SMB, "limiting write size to max size(%u)\n",
6541 ksmbd_debug(SMB, "flags %u\n", le32_to_cpu(req->Flags));
6542 if (le32_to_cpu(req->Flags) & SMB2_WRITEFLAG_WRITE_THROUGH)
6543 writethrough = true;
6545 if (is_rdma_channel == false) {
6546 if (le16_to_cpu(req->DataOffset) <
6547 offsetof(struct smb2_write_req, Buffer)) {
6552 data_buf = (char *)(((char *)&req->hdr.ProtocolId) +
6553 le16_to_cpu(req->DataOffset));
6555 ksmbd_debug(SMB, "filename %pD, offset %lld, len %zu\n",
6556 fp->filp, offset, length);
6557 err = ksmbd_vfs_write(work, fp, data_buf, length, &offset,
6558 writethrough, &nbytes);
6562 /* read data from the client using rdma channel, and
6565 nbytes = smb2_write_rdma_channel(work, req, fp, offset, length,
6573 rsp->StructureSize = cpu_to_le16(17);
6574 rsp->DataOffset = 0;
6576 rsp->DataLength = cpu_to_le32(nbytes);
6577 rsp->DataRemaining = 0;
6579 inc_rfc1001_len(work->response_buf, 16);
6580 ksmbd_fd_put(work, fp);
6585 rsp->hdr.Status = STATUS_FILE_LOCK_CONFLICT;
6586 else if (err == -ENOSPC || err == -EFBIG)
6587 rsp->hdr.Status = STATUS_DISK_FULL;
6588 else if (err == -ENOENT)
6589 rsp->hdr.Status = STATUS_FILE_CLOSED;
6590 else if (err == -EACCES)
6591 rsp->hdr.Status = STATUS_ACCESS_DENIED;
6592 else if (err == -ESHARE)
6593 rsp->hdr.Status = STATUS_SHARING_VIOLATION;
6594 else if (err == -EINVAL)
6595 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
6597 rsp->hdr.Status = STATUS_INVALID_HANDLE;
6599 smb2_set_err_rsp(work);
6600 ksmbd_fd_put(work, fp);
6605 * smb2_flush() - handler for smb2 flush file - fsync
6606 * @work: smb work containing flush command buffer
6608 * Return: 0 on success, otherwise error
6610 int smb2_flush(struct ksmbd_work *work)
6612 struct smb2_flush_req *req;
6613 struct smb2_flush_rsp *rsp;
6616 WORK_BUFFERS(work, req, rsp);
6618 ksmbd_debug(SMB, "SMB2_FLUSH called for fid %llu\n", req->VolatileFileId);
6620 err = ksmbd_vfs_fsync(work, req->VolatileFileId, req->PersistentFileId);
6624 rsp->StructureSize = cpu_to_le16(4);
6626 inc_rfc1001_len(work->response_buf, 4);
6631 rsp->hdr.Status = STATUS_INVALID_HANDLE;
6632 smb2_set_err_rsp(work);
6639 * smb2_cancel() - handler for smb2 cancel command
6640 * @work: smb work containing cancel command buffer
6642 * Return: 0 on success, otherwise error
6644 int smb2_cancel(struct ksmbd_work *work)
6646 struct ksmbd_conn *conn = work->conn;
6647 struct smb2_hdr *hdr = smb2_get_msg(work->request_buf);
6648 struct smb2_hdr *chdr;
6649 struct ksmbd_work *cancel_work = NULL, *iter;
6650 struct list_head *command_list;
6652 ksmbd_debug(SMB, "smb2 cancel called on mid %llu, async flags 0x%x\n",
6653 hdr->MessageId, hdr->Flags);
6655 if (hdr->Flags & SMB2_FLAGS_ASYNC_COMMAND) {
6656 command_list = &conn->async_requests;
6658 spin_lock(&conn->request_lock);
6659 list_for_each_entry(iter, command_list,
6660 async_request_entry) {
6661 chdr = smb2_get_msg(iter->request_buf);
6663 if (iter->async_id !=
6664 le64_to_cpu(hdr->Id.AsyncId))
6668 "smb2 with AsyncId %llu cancelled command = 0x%x\n",
6669 le64_to_cpu(hdr->Id.AsyncId),
6670 le16_to_cpu(chdr->Command));
6674 spin_unlock(&conn->request_lock);
6676 command_list = &conn->requests;
6678 spin_lock(&conn->request_lock);
6679 list_for_each_entry(iter, command_list, request_entry) {
6680 chdr = smb2_get_msg(iter->request_buf);
6682 if (chdr->MessageId != hdr->MessageId ||
6687 "smb2 with mid %llu cancelled command = 0x%x\n",
6688 le64_to_cpu(hdr->MessageId),
6689 le16_to_cpu(chdr->Command));
6693 spin_unlock(&conn->request_lock);
6697 cancel_work->state = KSMBD_WORK_CANCELLED;
6698 if (cancel_work->cancel_fn)
6699 cancel_work->cancel_fn(cancel_work->cancel_argv);
6702 /* For SMB2_CANCEL command itself send no response*/
6703 work->send_no_response = 1;
6707 struct file_lock *smb_flock_init(struct file *f)
6709 struct file_lock *fl;
6711 fl = locks_alloc_lock();
6715 locks_init_lock(fl);
6718 fl->fl_pid = current->tgid;
6720 fl->fl_flags = FL_POSIX;
6722 fl->fl_lmops = NULL;
6728 static int smb2_set_flock_flags(struct file_lock *flock, int flags)
6732 /* Checking for wrong flag combination during lock request*/
6734 case SMB2_LOCKFLAG_SHARED:
6735 ksmbd_debug(SMB, "received shared request\n");
6737 flock->fl_type = F_RDLCK;
6738 flock->fl_flags |= FL_SLEEP;
6740 case SMB2_LOCKFLAG_EXCLUSIVE:
6741 ksmbd_debug(SMB, "received exclusive request\n");
6743 flock->fl_type = F_WRLCK;
6744 flock->fl_flags |= FL_SLEEP;
6746 case SMB2_LOCKFLAG_SHARED | SMB2_LOCKFLAG_FAIL_IMMEDIATELY:
6748 "received shared & fail immediately request\n");
6750 flock->fl_type = F_RDLCK;
6752 case SMB2_LOCKFLAG_EXCLUSIVE | SMB2_LOCKFLAG_FAIL_IMMEDIATELY:
6754 "received exclusive & fail immediately request\n");
6756 flock->fl_type = F_WRLCK;
6758 case SMB2_LOCKFLAG_UNLOCK:
6759 ksmbd_debug(SMB, "received unlock request\n");
6760 flock->fl_type = F_UNLCK;
6768 static struct ksmbd_lock *smb2_lock_init(struct file_lock *flock,
6769 unsigned int cmd, int flags,
6770 struct list_head *lock_list)
6772 struct ksmbd_lock *lock;
6774 lock = kzalloc(sizeof(struct ksmbd_lock), GFP_KERNEL);
6780 lock->start = flock->fl_start;
6781 lock->end = flock->fl_end;
6782 lock->flags = flags;
6783 if (lock->start == lock->end)
6785 INIT_LIST_HEAD(&lock->clist);
6786 INIT_LIST_HEAD(&lock->flist);
6787 INIT_LIST_HEAD(&lock->llist);
6788 list_add_tail(&lock->llist, lock_list);
6793 static void smb2_remove_blocked_lock(void **argv)
6795 struct file_lock *flock = (struct file_lock *)argv[0];
6797 ksmbd_vfs_posix_lock_unblock(flock);
6798 wake_up(&flock->fl_wait);
6801 static inline bool lock_defer_pending(struct file_lock *fl)
6803 /* check pending lock waiters */
6804 return waitqueue_active(&fl->fl_wait);
6808 * smb2_lock() - handler for smb2 file lock command
6809 * @work: smb work containing lock command buffer
6811 * Return: 0 on success, otherwise error
6813 int smb2_lock(struct ksmbd_work *work)
6815 struct smb2_lock_req *req = smb2_get_msg(work->request_buf);
6816 struct smb2_lock_rsp *rsp = smb2_get_msg(work->response_buf);
6817 struct smb2_lock_element *lock_ele;
6818 struct ksmbd_file *fp = NULL;
6819 struct file_lock *flock = NULL;
6820 struct file *filp = NULL;
6824 int err = -EIO, i, rc = 0;
6825 u64 lock_start, lock_length;
6826 struct ksmbd_lock *smb_lock = NULL, *cmp_lock, *tmp, *tmp2;
6827 struct ksmbd_conn *conn;
6829 LIST_HEAD(lock_list);
6830 LIST_HEAD(rollback_list);
6833 ksmbd_debug(SMB, "Received lock request\n");
6834 fp = ksmbd_lookup_fd_slow(work, req->VolatileFileId, req->PersistentFileId);
6836 ksmbd_debug(SMB, "Invalid file id for lock : %llu\n", req->VolatileFileId);
6842 lock_count = le16_to_cpu(req->LockCount);
6843 lock_ele = req->locks;
6845 ksmbd_debug(SMB, "lock count is %d\n", lock_count);
6851 for (i = 0; i < lock_count; i++) {
6852 flags = le32_to_cpu(lock_ele[i].Flags);
6854 flock = smb_flock_init(filp);
6858 cmd = smb2_set_flock_flags(flock, flags);
6860 lock_start = le64_to_cpu(lock_ele[i].Offset);
6861 lock_length = le64_to_cpu(lock_ele[i].Length);
6862 if (lock_start > U64_MAX - lock_length) {
6863 pr_err("Invalid lock range requested\n");
6864 rsp->hdr.Status = STATUS_INVALID_LOCK_RANGE;
6865 locks_free_lock(flock);
6869 if (lock_start > OFFSET_MAX)
6870 flock->fl_start = OFFSET_MAX;
6872 flock->fl_start = lock_start;
6874 lock_length = le64_to_cpu(lock_ele[i].Length);
6875 if (lock_length > OFFSET_MAX - flock->fl_start)
6876 lock_length = OFFSET_MAX - flock->fl_start;
6878 flock->fl_end = flock->fl_start + lock_length;
6880 if (flock->fl_end < flock->fl_start) {
6882 "the end offset(%llx) is smaller than the start offset(%llx)\n",
6883 flock->fl_end, flock->fl_start);
6884 rsp->hdr.Status = STATUS_INVALID_LOCK_RANGE;
6885 locks_free_lock(flock);
6889 /* Check conflict locks in one request */
6890 list_for_each_entry(cmp_lock, &lock_list, llist) {
6891 if (cmp_lock->fl->fl_start <= flock->fl_start &&
6892 cmp_lock->fl->fl_end >= flock->fl_end) {
6893 if (cmp_lock->fl->fl_type != F_UNLCK &&
6894 flock->fl_type != F_UNLCK) {
6895 pr_err("conflict two locks in one request\n");
6897 locks_free_lock(flock);
6903 smb_lock = smb2_lock_init(flock, cmd, flags, &lock_list);
6906 locks_free_lock(flock);
6911 list_for_each_entry_safe(smb_lock, tmp, &lock_list, llist) {
6912 if (smb_lock->cmd < 0) {
6917 if (!(smb_lock->flags & SMB2_LOCKFLAG_MASK)) {
6922 if ((prior_lock & (SMB2_LOCKFLAG_EXCLUSIVE | SMB2_LOCKFLAG_SHARED) &&
6923 smb_lock->flags & SMB2_LOCKFLAG_UNLOCK) ||
6924 (prior_lock == SMB2_LOCKFLAG_UNLOCK &&
6925 !(smb_lock->flags & SMB2_LOCKFLAG_UNLOCK))) {
6930 prior_lock = smb_lock->flags;
6932 if (!(smb_lock->flags & SMB2_LOCKFLAG_UNLOCK) &&
6933 !(smb_lock->flags & SMB2_LOCKFLAG_FAIL_IMMEDIATELY))
6937 /* check locks in connection list */
6938 read_lock(&conn_list_lock);
6939 list_for_each_entry(conn, &conn_list, conns_list) {
6940 spin_lock(&conn->llist_lock);
6941 list_for_each_entry_safe(cmp_lock, tmp2, &conn->lock_list, clist) {
6942 if (file_inode(cmp_lock->fl->fl_file) !=
6943 file_inode(smb_lock->fl->fl_file))
6946 if (smb_lock->fl->fl_type == F_UNLCK) {
6947 if (cmp_lock->fl->fl_file == smb_lock->fl->fl_file &&
6948 cmp_lock->start == smb_lock->start &&
6949 cmp_lock->end == smb_lock->end &&
6950 !lock_defer_pending(cmp_lock->fl)) {
6952 list_del(&cmp_lock->flist);
6953 list_del(&cmp_lock->clist);
6954 spin_unlock(&conn->llist_lock);
6955 read_unlock(&conn_list_lock);
6957 locks_free_lock(cmp_lock->fl);
6964 if (cmp_lock->fl->fl_file == smb_lock->fl->fl_file) {
6965 if (smb_lock->flags & SMB2_LOCKFLAG_SHARED)
6968 if (cmp_lock->flags & SMB2_LOCKFLAG_SHARED)
6972 /* check zero byte lock range */
6973 if (cmp_lock->zero_len && !smb_lock->zero_len &&
6974 cmp_lock->start > smb_lock->start &&
6975 cmp_lock->start < smb_lock->end) {
6976 spin_unlock(&conn->llist_lock);
6977 read_unlock(&conn_list_lock);
6978 pr_err("previous lock conflict with zero byte lock range\n");
6982 if (smb_lock->zero_len && !cmp_lock->zero_len &&
6983 smb_lock->start > cmp_lock->start &&
6984 smb_lock->start < cmp_lock->end) {
6985 spin_unlock(&conn->llist_lock);
6986 read_unlock(&conn_list_lock);
6987 pr_err("current lock conflict with zero byte lock range\n");
6991 if (((cmp_lock->start <= smb_lock->start &&
6992 cmp_lock->end > smb_lock->start) ||
6993 (cmp_lock->start < smb_lock->end &&
6994 cmp_lock->end >= smb_lock->end)) &&
6995 !cmp_lock->zero_len && !smb_lock->zero_len) {
6996 spin_unlock(&conn->llist_lock);
6997 read_unlock(&conn_list_lock);
6998 pr_err("Not allow lock operation on exclusive lock range\n");
7002 spin_unlock(&conn->llist_lock);
7004 read_unlock(&conn_list_lock);
7006 if (smb_lock->fl->fl_type == F_UNLCK && nolock) {
7007 pr_err("Try to unlock nolocked range\n");
7008 rsp->hdr.Status = STATUS_RANGE_NOT_LOCKED;
7013 if (smb_lock->zero_len) {
7018 flock = smb_lock->fl;
7019 list_del(&smb_lock->llist);
7021 rc = vfs_lock_file(filp, smb_lock->cmd, flock, NULL);
7023 if (flags & SMB2_LOCKFLAG_UNLOCK) {
7025 ksmbd_debug(SMB, "File unlocked\n");
7026 } else if (rc == -ENOENT) {
7027 rsp->hdr.Status = STATUS_NOT_LOCKED;
7030 locks_free_lock(flock);
7033 if (rc == FILE_LOCK_DEFERRED) {
7037 "would have to wait for getting lock\n");
7038 spin_lock(&work->conn->llist_lock);
7039 list_add_tail(&smb_lock->clist,
7040 &work->conn->lock_list);
7041 spin_unlock(&work->conn->llist_lock);
7042 list_add(&smb_lock->llist, &rollback_list);
7044 argv = kmalloc(sizeof(void *), GFP_KERNEL);
7051 rc = setup_async_work(work,
7052 smb2_remove_blocked_lock,
7058 spin_lock(&fp->f_lock);
7059 list_add(&work->fp_entry, &fp->blocked_works);
7060 spin_unlock(&fp->f_lock);
7062 smb2_send_interim_resp(work, STATUS_PENDING);
7064 ksmbd_vfs_posix_lock_wait(flock);
7066 if (work->state != KSMBD_WORK_ACTIVE) {
7067 list_del(&smb_lock->llist);
7068 spin_lock(&work->conn->llist_lock);
7069 list_del(&smb_lock->clist);
7070 spin_unlock(&work->conn->llist_lock);
7071 locks_free_lock(flock);
7073 if (work->state == KSMBD_WORK_CANCELLED) {
7074 spin_lock(&fp->f_lock);
7075 list_del(&work->fp_entry);
7076 spin_unlock(&fp->f_lock);
7080 smb2_send_interim_resp(work,
7082 work->send_no_response = 1;
7085 init_smb2_rsp_hdr(work);
7086 smb2_set_err_rsp(work);
7088 STATUS_RANGE_NOT_LOCKED;
7093 list_del(&smb_lock->llist);
7094 spin_lock(&work->conn->llist_lock);
7095 list_del(&smb_lock->clist);
7096 spin_unlock(&work->conn->llist_lock);
7098 spin_lock(&fp->f_lock);
7099 list_del(&work->fp_entry);
7100 spin_unlock(&fp->f_lock);
7103 spin_lock(&work->conn->llist_lock);
7104 list_add_tail(&smb_lock->clist,
7105 &work->conn->lock_list);
7106 list_add_tail(&smb_lock->flist,
7108 spin_unlock(&work->conn->llist_lock);
7109 list_add(&smb_lock->llist, &rollback_list);
7110 ksmbd_debug(SMB, "successful in taking lock\n");
7117 if (atomic_read(&fp->f_ci->op_count) > 1)
7118 smb_break_all_oplock(work, fp);
7120 rsp->StructureSize = cpu_to_le16(4);
7121 ksmbd_debug(SMB, "successful in taking lock\n");
7122 rsp->hdr.Status = STATUS_SUCCESS;
7124 inc_rfc1001_len(work->response_buf, 4);
7125 ksmbd_fd_put(work, fp);
7129 list_for_each_entry_safe(smb_lock, tmp, &lock_list, llist) {
7130 locks_free_lock(smb_lock->fl);
7131 list_del(&smb_lock->llist);
7135 list_for_each_entry_safe(smb_lock, tmp, &rollback_list, llist) {
7136 struct file_lock *rlock = NULL;
7138 rlock = smb_flock_init(filp);
7139 rlock->fl_type = F_UNLCK;
7140 rlock->fl_start = smb_lock->start;
7141 rlock->fl_end = smb_lock->end;
7143 rc = vfs_lock_file(filp, F_SETLK, rlock, NULL);
7145 pr_err("rollback unlock fail : %d\n", rc);
7147 list_del(&smb_lock->llist);
7148 spin_lock(&work->conn->llist_lock);
7149 if (!list_empty(&smb_lock->flist))
7150 list_del(&smb_lock->flist);
7151 list_del(&smb_lock->clist);
7152 spin_unlock(&work->conn->llist_lock);
7154 locks_free_lock(smb_lock->fl);
7155 locks_free_lock(rlock);
7159 ksmbd_debug(SMB, "failed in taking lock(flags : %x), err : %d\n", flags, err);
7161 if (!rsp->hdr.Status) {
7163 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
7164 else if (err == -ENOMEM)
7165 rsp->hdr.Status = STATUS_INSUFFICIENT_RESOURCES;
7166 else if (err == -ENOENT)
7167 rsp->hdr.Status = STATUS_FILE_CLOSED;
7169 rsp->hdr.Status = STATUS_LOCK_NOT_GRANTED;
7172 smb2_set_err_rsp(work);
7173 ksmbd_fd_put(work, fp);
7177 static int fsctl_copychunk(struct ksmbd_work *work,
7178 struct copychunk_ioctl_req *ci_req,
7179 unsigned int cnt_code,
7180 unsigned int input_count,
7181 unsigned long long volatile_id,
7182 unsigned long long persistent_id,
7183 struct smb2_ioctl_rsp *rsp)
7185 struct copychunk_ioctl_rsp *ci_rsp;
7186 struct ksmbd_file *src_fp = NULL, *dst_fp = NULL;
7187 struct srv_copychunk *chunks;
7188 unsigned int i, chunk_count, chunk_count_written = 0;
7189 unsigned int chunk_size_written = 0;
7190 loff_t total_size_written = 0;
7193 ci_rsp = (struct copychunk_ioctl_rsp *)&rsp->Buffer[0];
7195 rsp->VolatileFileId = volatile_id;
7196 rsp->PersistentFileId = persistent_id;
7197 ci_rsp->ChunksWritten =
7198 cpu_to_le32(ksmbd_server_side_copy_max_chunk_count());
7199 ci_rsp->ChunkBytesWritten =
7200 cpu_to_le32(ksmbd_server_side_copy_max_chunk_size());
7201 ci_rsp->TotalBytesWritten =
7202 cpu_to_le32(ksmbd_server_side_copy_max_total_size());
7204 chunks = (struct srv_copychunk *)&ci_req->Chunks[0];
7205 chunk_count = le32_to_cpu(ci_req->ChunkCount);
7206 if (chunk_count == 0)
7208 total_size_written = 0;
7210 /* verify the SRV_COPYCHUNK_COPY packet */
7211 if (chunk_count > ksmbd_server_side_copy_max_chunk_count() ||
7212 input_count < offsetof(struct copychunk_ioctl_req, Chunks) +
7213 chunk_count * sizeof(struct srv_copychunk)) {
7214 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
7218 for (i = 0; i < chunk_count; i++) {
7219 if (le32_to_cpu(chunks[i].Length) == 0 ||
7220 le32_to_cpu(chunks[i].Length) > ksmbd_server_side_copy_max_chunk_size())
7222 total_size_written += le32_to_cpu(chunks[i].Length);
7225 if (i < chunk_count ||
7226 total_size_written > ksmbd_server_side_copy_max_total_size()) {
7227 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
7231 src_fp = ksmbd_lookup_foreign_fd(work,
7232 le64_to_cpu(ci_req->ResumeKey[0]));
7233 dst_fp = ksmbd_lookup_fd_slow(work, volatile_id, persistent_id);
7236 src_fp->persistent_id != le64_to_cpu(ci_req->ResumeKey[1])) {
7237 rsp->hdr.Status = STATUS_OBJECT_NAME_NOT_FOUND;
7242 rsp->hdr.Status = STATUS_FILE_CLOSED;
7247 * FILE_READ_DATA should only be included in
7248 * the FSCTL_COPYCHUNK case
7250 if (cnt_code == FSCTL_COPYCHUNK &&
7251 !(dst_fp->daccess & (FILE_READ_DATA_LE | FILE_GENERIC_READ_LE))) {
7252 rsp->hdr.Status = STATUS_ACCESS_DENIED;
7256 ret = ksmbd_vfs_copy_file_ranges(work, src_fp, dst_fp,
7257 chunks, chunk_count,
7258 &chunk_count_written,
7259 &chunk_size_written,
7260 &total_size_written);
7263 rsp->hdr.Status = STATUS_ACCESS_DENIED;
7265 rsp->hdr.Status = STATUS_FILE_LOCK_CONFLICT;
7266 else if (ret == -EBADF)
7267 rsp->hdr.Status = STATUS_INVALID_HANDLE;
7268 else if (ret == -EFBIG || ret == -ENOSPC)
7269 rsp->hdr.Status = STATUS_DISK_FULL;
7270 else if (ret == -EINVAL)
7271 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
7272 else if (ret == -EISDIR)
7273 rsp->hdr.Status = STATUS_FILE_IS_A_DIRECTORY;
7274 else if (ret == -E2BIG)
7275 rsp->hdr.Status = STATUS_INVALID_VIEW_SIZE;
7277 rsp->hdr.Status = STATUS_UNEXPECTED_IO_ERROR;
7280 ci_rsp->ChunksWritten = cpu_to_le32(chunk_count_written);
7281 ci_rsp->ChunkBytesWritten = cpu_to_le32(chunk_size_written);
7282 ci_rsp->TotalBytesWritten = cpu_to_le32(total_size_written);
7284 ksmbd_fd_put(work, src_fp);
7285 ksmbd_fd_put(work, dst_fp);
7289 static __be32 idev_ipv4_address(struct in_device *idev)
7293 struct in_ifaddr *ifa;
7296 in_dev_for_each_ifa_rcu(ifa, idev) {
7297 if (ifa->ifa_flags & IFA_F_SECONDARY)
7300 addr = ifa->ifa_address;
7307 static int fsctl_query_iface_info_ioctl(struct ksmbd_conn *conn,
7308 struct smb2_ioctl_rsp *rsp,
7309 unsigned int out_buf_len)
7311 struct network_interface_info_ioctl_rsp *nii_rsp = NULL;
7313 struct net_device *netdev;
7314 struct sockaddr_storage_rsp *sockaddr_storage;
7316 unsigned long long speed;
7319 for_each_netdev(&init_net, netdev) {
7320 bool ipv4_set = false;
7322 if (netdev->type == ARPHRD_LOOPBACK)
7325 flags = dev_get_flags(netdev);
7326 if (!(flags & IFF_RUNNING))
7330 nbytes + sizeof(struct network_interface_info_ioctl_rsp)) {
7335 nii_rsp = (struct network_interface_info_ioctl_rsp *)
7336 &rsp->Buffer[nbytes];
7337 nii_rsp->IfIndex = cpu_to_le32(netdev->ifindex);
7339 nii_rsp->Capability = 0;
7340 if (netdev->real_num_tx_queues > 1)
7341 nii_rsp->Capability |= cpu_to_le32(RSS_CAPABLE);
7342 if (ksmbd_rdma_capable_netdev(netdev))
7343 nii_rsp->Capability |= cpu_to_le32(RDMA_CAPABLE);
7345 nii_rsp->Next = cpu_to_le32(152);
7346 nii_rsp->Reserved = 0;
7348 if (netdev->ethtool_ops->get_link_ksettings) {
7349 struct ethtool_link_ksettings cmd;
7351 netdev->ethtool_ops->get_link_ksettings(netdev, &cmd);
7352 speed = cmd.base.speed;
7354 ksmbd_debug(SMB, "%s %s\n", netdev->name,
7355 "speed is unknown, defaulting to 1Gb/sec");
7360 nii_rsp->LinkSpeed = cpu_to_le64(speed);
7362 sockaddr_storage = (struct sockaddr_storage_rsp *)
7363 nii_rsp->SockAddr_Storage;
7364 memset(sockaddr_storage, 0, 128);
7367 struct in_device *idev;
7369 sockaddr_storage->Family = cpu_to_le16(INTERNETWORK);
7370 sockaddr_storage->addr4.Port = 0;
7372 idev = __in_dev_get_rtnl(netdev);
7375 sockaddr_storage->addr4.IPv4address =
7376 idev_ipv4_address(idev);
7377 nbytes += sizeof(struct network_interface_info_ioctl_rsp);
7381 struct inet6_dev *idev6;
7382 struct inet6_ifaddr *ifa;
7383 __u8 *ipv6_addr = sockaddr_storage->addr6.IPv6address;
7385 sockaddr_storage->Family = cpu_to_le16(INTERNETWORKV6);
7386 sockaddr_storage->addr6.Port = 0;
7387 sockaddr_storage->addr6.FlowInfo = 0;
7389 idev6 = __in6_dev_get(netdev);
7393 list_for_each_entry(ifa, &idev6->addr_list, if_list) {
7394 if (ifa->flags & (IFA_F_TENTATIVE |
7397 memcpy(ipv6_addr, ifa->addr.s6_addr, 16);
7400 sockaddr_storage->addr6.ScopeId = 0;
7401 nbytes += sizeof(struct network_interface_info_ioctl_rsp);
7406 /* zero if this is last one */
7410 rsp->PersistentFileId = SMB2_NO_FID;
7411 rsp->VolatileFileId = SMB2_NO_FID;
7415 static int fsctl_validate_negotiate_info(struct ksmbd_conn *conn,
7416 struct validate_negotiate_info_req *neg_req,
7417 struct validate_negotiate_info_rsp *neg_rsp,
7418 unsigned int in_buf_len)
7423 if (in_buf_len < offsetof(struct validate_negotiate_info_req, Dialects) +
7424 le16_to_cpu(neg_req->DialectCount) * sizeof(__le16))
7427 dialect = ksmbd_lookup_dialect_by_id(neg_req->Dialects,
7428 neg_req->DialectCount);
7429 if (dialect == BAD_PROT_ID || dialect != conn->dialect) {
7434 if (strncmp(neg_req->Guid, conn->ClientGUID, SMB2_CLIENT_GUID_SIZE)) {
7439 if (le16_to_cpu(neg_req->SecurityMode) != conn->cli_sec_mode) {
7444 if (le32_to_cpu(neg_req->Capabilities) != conn->cli_cap) {
7449 neg_rsp->Capabilities = cpu_to_le32(conn->vals->capabilities);
7450 memset(neg_rsp->Guid, 0, SMB2_CLIENT_GUID_SIZE);
7451 neg_rsp->SecurityMode = cpu_to_le16(conn->srv_sec_mode);
7452 neg_rsp->Dialect = cpu_to_le16(conn->dialect);
7457 static int fsctl_query_allocated_ranges(struct ksmbd_work *work, u64 id,
7458 struct file_allocated_range_buffer *qar_req,
7459 struct file_allocated_range_buffer *qar_rsp,
7460 unsigned int in_count, unsigned int *out_count)
7462 struct ksmbd_file *fp;
7463 loff_t start, length;
7470 fp = ksmbd_lookup_fd_fast(work, id);
7474 start = le64_to_cpu(qar_req->file_offset);
7475 length = le64_to_cpu(qar_req->length);
7477 ret = ksmbd_vfs_fqar_lseek(fp, start, length,
7478 qar_rsp, in_count, out_count);
7479 if (ret && ret != -E2BIG)
7482 ksmbd_fd_put(work, fp);
7486 static int fsctl_pipe_transceive(struct ksmbd_work *work, u64 id,
7487 unsigned int out_buf_len,
7488 struct smb2_ioctl_req *req,
7489 struct smb2_ioctl_rsp *rsp)
7491 struct ksmbd_rpc_command *rpc_resp;
7492 char *data_buf = (char *)&req->Buffer[0];
7495 rpc_resp = ksmbd_rpc_ioctl(work->sess, id, data_buf,
7496 le32_to_cpu(req->InputCount));
7498 if (rpc_resp->flags == KSMBD_RPC_SOME_NOT_MAPPED) {
7500 * set STATUS_SOME_NOT_MAPPED response
7501 * for unknown domain sid.
7503 rsp->hdr.Status = STATUS_SOME_NOT_MAPPED;
7504 } else if (rpc_resp->flags == KSMBD_RPC_ENOTIMPLEMENTED) {
7505 rsp->hdr.Status = STATUS_NOT_SUPPORTED;
7507 } else if (rpc_resp->flags != KSMBD_RPC_OK) {
7508 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
7512 nbytes = rpc_resp->payload_sz;
7513 if (rpc_resp->payload_sz > out_buf_len) {
7514 rsp->hdr.Status = STATUS_BUFFER_OVERFLOW;
7515 nbytes = out_buf_len;
7518 if (!rpc_resp->payload_sz) {
7520 STATUS_UNEXPECTED_IO_ERROR;
7524 memcpy((char *)rsp->Buffer, rpc_resp->payload, nbytes);
7531 static inline int fsctl_set_sparse(struct ksmbd_work *work, u64 id,
7532 struct file_sparse *sparse)
7534 struct ksmbd_file *fp;
7535 struct mnt_idmap *idmap;
7539 fp = ksmbd_lookup_fd_fast(work, id);
7542 idmap = file_mnt_idmap(fp->filp);
7544 old_fattr = fp->f_ci->m_fattr;
7545 if (sparse->SetSparse)
7546 fp->f_ci->m_fattr |= FILE_ATTRIBUTE_SPARSE_FILE_LE;
7548 fp->f_ci->m_fattr &= ~FILE_ATTRIBUTE_SPARSE_FILE_LE;
7550 if (fp->f_ci->m_fattr != old_fattr &&
7551 test_share_config_flag(work->tcon->share_conf,
7552 KSMBD_SHARE_FLAG_STORE_DOS_ATTRS)) {
7553 struct xattr_dos_attrib da;
7555 ret = ksmbd_vfs_get_dos_attrib_xattr(idmap,
7556 fp->filp->f_path.dentry, &da);
7560 da.attr = le32_to_cpu(fp->f_ci->m_fattr);
7561 ret = ksmbd_vfs_set_dos_attrib_xattr(idmap,
7562 fp->filp->f_path.dentry, &da);
7564 fp->f_ci->m_fattr = old_fattr;
7568 ksmbd_fd_put(work, fp);
7572 static int fsctl_request_resume_key(struct ksmbd_work *work,
7573 struct smb2_ioctl_req *req,
7574 struct resume_key_ioctl_rsp *key_rsp)
7576 struct ksmbd_file *fp;
7578 fp = ksmbd_lookup_fd_slow(work, req->VolatileFileId, req->PersistentFileId);
7582 memset(key_rsp, 0, sizeof(*key_rsp));
7583 key_rsp->ResumeKey[0] = req->VolatileFileId;
7584 key_rsp->ResumeKey[1] = req->PersistentFileId;
7585 ksmbd_fd_put(work, fp);
7591 * smb2_ioctl() - handler for smb2 ioctl command
7592 * @work: smb work containing ioctl command buffer
7594 * Return: 0 on success, otherwise error
7596 int smb2_ioctl(struct ksmbd_work *work)
7598 struct smb2_ioctl_req *req;
7599 struct smb2_ioctl_rsp *rsp;
7600 unsigned int cnt_code, nbytes = 0, out_buf_len, in_buf_len;
7601 u64 id = KSMBD_NO_FID;
7602 struct ksmbd_conn *conn = work->conn;
7605 if (work->next_smb2_rcv_hdr_off) {
7606 req = ksmbd_req_buf_next(work);
7607 rsp = ksmbd_resp_buf_next(work);
7608 if (!has_file_id(req->VolatileFileId)) {
7609 ksmbd_debug(SMB, "Compound request set FID = %llu\n",
7610 work->compound_fid);
7611 id = work->compound_fid;
7614 req = smb2_get_msg(work->request_buf);
7615 rsp = smb2_get_msg(work->response_buf);
7618 if (!has_file_id(id))
7619 id = req->VolatileFileId;
7621 if (req->Flags != cpu_to_le32(SMB2_0_IOCTL_IS_FSCTL)) {
7622 rsp->hdr.Status = STATUS_NOT_SUPPORTED;
7626 cnt_code = le32_to_cpu(req->CtlCode);
7627 ret = smb2_calc_max_out_buf_len(work, 48,
7628 le32_to_cpu(req->MaxOutputResponse));
7630 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
7633 out_buf_len = (unsigned int)ret;
7634 in_buf_len = le32_to_cpu(req->InputCount);
7637 case FSCTL_DFS_GET_REFERRALS:
7638 case FSCTL_DFS_GET_REFERRALS_EX:
7639 /* Not support DFS yet */
7640 rsp->hdr.Status = STATUS_FS_DRIVER_REQUIRED;
7642 case FSCTL_CREATE_OR_GET_OBJECT_ID:
7644 struct file_object_buf_type1_ioctl_rsp *obj_buf;
7646 nbytes = sizeof(struct file_object_buf_type1_ioctl_rsp);
7647 obj_buf = (struct file_object_buf_type1_ioctl_rsp *)
7651 * TODO: This is dummy implementation to pass smbtorture
7652 * Need to check correct response later
7654 memset(obj_buf->ObjectId, 0x0, 16);
7655 memset(obj_buf->BirthVolumeId, 0x0, 16);
7656 memset(obj_buf->BirthObjectId, 0x0, 16);
7657 memset(obj_buf->DomainId, 0x0, 16);
7661 case FSCTL_PIPE_TRANSCEIVE:
7662 out_buf_len = min_t(u32, KSMBD_IPC_MAX_PAYLOAD, out_buf_len);
7663 nbytes = fsctl_pipe_transceive(work, id, out_buf_len, req, rsp);
7665 case FSCTL_VALIDATE_NEGOTIATE_INFO:
7666 if (conn->dialect < SMB30_PROT_ID) {
7671 if (in_buf_len < offsetof(struct validate_negotiate_info_req,
7677 if (out_buf_len < sizeof(struct validate_negotiate_info_rsp)) {
7682 ret = fsctl_validate_negotiate_info(conn,
7683 (struct validate_negotiate_info_req *)&req->Buffer[0],
7684 (struct validate_negotiate_info_rsp *)&rsp->Buffer[0],
7689 nbytes = sizeof(struct validate_negotiate_info_rsp);
7690 rsp->PersistentFileId = SMB2_NO_FID;
7691 rsp->VolatileFileId = SMB2_NO_FID;
7693 case FSCTL_QUERY_NETWORK_INTERFACE_INFO:
7694 ret = fsctl_query_iface_info_ioctl(conn, rsp, out_buf_len);
7699 case FSCTL_REQUEST_RESUME_KEY:
7700 if (out_buf_len < sizeof(struct resume_key_ioctl_rsp)) {
7705 ret = fsctl_request_resume_key(work, req,
7706 (struct resume_key_ioctl_rsp *)&rsp->Buffer[0]);
7709 rsp->PersistentFileId = req->PersistentFileId;
7710 rsp->VolatileFileId = req->VolatileFileId;
7711 nbytes = sizeof(struct resume_key_ioctl_rsp);
7713 case FSCTL_COPYCHUNK:
7714 case FSCTL_COPYCHUNK_WRITE:
7715 if (!test_tree_conn_flag(work->tcon, KSMBD_TREE_CONN_FLAG_WRITABLE)) {
7717 "User does not have write permission\n");
7722 if (in_buf_len < sizeof(struct copychunk_ioctl_req)) {
7727 if (out_buf_len < sizeof(struct copychunk_ioctl_rsp)) {
7732 nbytes = sizeof(struct copychunk_ioctl_rsp);
7733 rsp->VolatileFileId = req->VolatileFileId;
7734 rsp->PersistentFileId = req->PersistentFileId;
7735 fsctl_copychunk(work,
7736 (struct copychunk_ioctl_req *)&req->Buffer[0],
7737 le32_to_cpu(req->CtlCode),
7738 le32_to_cpu(req->InputCount),
7739 req->VolatileFileId,
7740 req->PersistentFileId,
7743 case FSCTL_SET_SPARSE:
7744 if (in_buf_len < sizeof(struct file_sparse)) {
7749 ret = fsctl_set_sparse(work, id,
7750 (struct file_sparse *)&req->Buffer[0]);
7754 case FSCTL_SET_ZERO_DATA:
7756 struct file_zero_data_information *zero_data;
7757 struct ksmbd_file *fp;
7758 loff_t off, len, bfz;
7760 if (!test_tree_conn_flag(work->tcon, KSMBD_TREE_CONN_FLAG_WRITABLE)) {
7762 "User does not have write permission\n");
7767 if (in_buf_len < sizeof(struct file_zero_data_information)) {
7773 (struct file_zero_data_information *)&req->Buffer[0];
7775 off = le64_to_cpu(zero_data->FileOffset);
7776 bfz = le64_to_cpu(zero_data->BeyondFinalZero);
7784 fp = ksmbd_lookup_fd_fast(work, id);
7790 ret = ksmbd_vfs_zero_data(work, fp, off, len);
7791 ksmbd_fd_put(work, fp);
7797 case FSCTL_QUERY_ALLOCATED_RANGES:
7798 if (in_buf_len < sizeof(struct file_allocated_range_buffer)) {
7803 ret = fsctl_query_allocated_ranges(work, id,
7804 (struct file_allocated_range_buffer *)&req->Buffer[0],
7805 (struct file_allocated_range_buffer *)&rsp->Buffer[0],
7807 sizeof(struct file_allocated_range_buffer), &nbytes);
7808 if (ret == -E2BIG) {
7809 rsp->hdr.Status = STATUS_BUFFER_OVERFLOW;
7810 } else if (ret < 0) {
7815 nbytes *= sizeof(struct file_allocated_range_buffer);
7817 case FSCTL_GET_REPARSE_POINT:
7819 struct reparse_data_buffer *reparse_ptr;
7820 struct ksmbd_file *fp;
7822 reparse_ptr = (struct reparse_data_buffer *)&rsp->Buffer[0];
7823 fp = ksmbd_lookup_fd_fast(work, id);
7825 pr_err("not found fp!!\n");
7830 reparse_ptr->ReparseTag =
7831 smb2_get_reparse_tag_special_file(file_inode(fp->filp)->i_mode);
7832 reparse_ptr->ReparseDataLength = 0;
7833 ksmbd_fd_put(work, fp);
7834 nbytes = sizeof(struct reparse_data_buffer);
7837 case FSCTL_DUPLICATE_EXTENTS_TO_FILE:
7839 struct ksmbd_file *fp_in, *fp_out = NULL;
7840 struct duplicate_extents_to_file *dup_ext;
7841 loff_t src_off, dst_off, length, cloned;
7843 if (in_buf_len < sizeof(struct duplicate_extents_to_file)) {
7848 dup_ext = (struct duplicate_extents_to_file *)&req->Buffer[0];
7850 fp_in = ksmbd_lookup_fd_slow(work, dup_ext->VolatileFileHandle,
7851 dup_ext->PersistentFileHandle);
7853 pr_err("not found file handle in duplicate extent to file\n");
7858 fp_out = ksmbd_lookup_fd_fast(work, id);
7860 pr_err("not found fp\n");
7865 src_off = le64_to_cpu(dup_ext->SourceFileOffset);
7866 dst_off = le64_to_cpu(dup_ext->TargetFileOffset);
7867 length = le64_to_cpu(dup_ext->ByteCount);
7869 * XXX: It is not clear if FSCTL_DUPLICATE_EXTENTS_TO_FILE
7870 * should fall back to vfs_copy_file_range(). This could be
7871 * beneficial when re-exporting nfs/smb mount, but note that
7872 * this can result in partial copy that returns an error status.
7873 * If/when FSCTL_DUPLICATE_EXTENTS_TO_FILE_EX is implemented,
7874 * fall back to vfs_copy_file_range(), should be avoided when
7875 * the flag DUPLICATE_EXTENTS_DATA_EX_SOURCE_ATOMIC is set.
7877 cloned = vfs_clone_file_range(fp_in->filp, src_off,
7878 fp_out->filp, dst_off, length, 0);
7879 if (cloned == -EXDEV || cloned == -EOPNOTSUPP) {
7882 } else if (cloned != length) {
7883 cloned = vfs_copy_file_range(fp_in->filp, src_off,
7884 fp_out->filp, dst_off,
7886 if (cloned != length) {
7895 ksmbd_fd_put(work, fp_in);
7896 ksmbd_fd_put(work, fp_out);
7902 ksmbd_debug(SMB, "not implemented yet ioctl command 0x%x\n",
7908 rsp->CtlCode = cpu_to_le32(cnt_code);
7909 rsp->InputCount = cpu_to_le32(0);
7910 rsp->InputOffset = cpu_to_le32(112);
7911 rsp->OutputOffset = cpu_to_le32(112);
7912 rsp->OutputCount = cpu_to_le32(nbytes);
7913 rsp->StructureSize = cpu_to_le16(49);
7914 rsp->Reserved = cpu_to_le16(0);
7915 rsp->Flags = cpu_to_le32(0);
7916 rsp->Reserved2 = cpu_to_le32(0);
7917 inc_rfc1001_len(work->response_buf, 48 + nbytes);
7923 rsp->hdr.Status = STATUS_ACCESS_DENIED;
7924 else if (ret == -ENOENT)
7925 rsp->hdr.Status = STATUS_OBJECT_NAME_NOT_FOUND;
7926 else if (ret == -EOPNOTSUPP)
7927 rsp->hdr.Status = STATUS_NOT_SUPPORTED;
7928 else if (ret == -ENOSPC)
7929 rsp->hdr.Status = STATUS_BUFFER_TOO_SMALL;
7930 else if (ret < 0 || rsp->hdr.Status == 0)
7931 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
7932 smb2_set_err_rsp(work);
7937 * smb20_oplock_break_ack() - handler for smb2.0 oplock break command
7938 * @work: smb work containing oplock break command buffer
7942 static void smb20_oplock_break_ack(struct ksmbd_work *work)
7944 struct smb2_oplock_break *req = smb2_get_msg(work->request_buf);
7945 struct smb2_oplock_break *rsp = smb2_get_msg(work->response_buf);
7946 struct ksmbd_file *fp;
7947 struct oplock_info *opinfo = NULL;
7950 u64 volatile_id, persistent_id;
7951 char req_oplevel = 0, rsp_oplevel = 0;
7952 unsigned int oplock_change_type;
7954 volatile_id = req->VolatileFid;
7955 persistent_id = req->PersistentFid;
7956 req_oplevel = req->OplockLevel;
7957 ksmbd_debug(OPLOCK, "v_id %llu, p_id %llu request oplock level %d\n",
7958 volatile_id, persistent_id, req_oplevel);
7960 fp = ksmbd_lookup_fd_slow(work, volatile_id, persistent_id);
7962 rsp->hdr.Status = STATUS_FILE_CLOSED;
7963 smb2_set_err_rsp(work);
7967 opinfo = opinfo_get(fp);
7969 pr_err("unexpected null oplock_info\n");
7970 rsp->hdr.Status = STATUS_INVALID_OPLOCK_PROTOCOL;
7971 smb2_set_err_rsp(work);
7972 ksmbd_fd_put(work, fp);
7976 if (opinfo->level == SMB2_OPLOCK_LEVEL_NONE) {
7977 rsp->hdr.Status = STATUS_INVALID_OPLOCK_PROTOCOL;
7981 if (opinfo->op_state == OPLOCK_STATE_NONE) {
7982 ksmbd_debug(SMB, "unexpected oplock state 0x%x\n", opinfo->op_state);
7983 rsp->hdr.Status = STATUS_UNSUCCESSFUL;
7987 if ((opinfo->level == SMB2_OPLOCK_LEVEL_EXCLUSIVE ||
7988 opinfo->level == SMB2_OPLOCK_LEVEL_BATCH) &&
7989 (req_oplevel != SMB2_OPLOCK_LEVEL_II &&
7990 req_oplevel != SMB2_OPLOCK_LEVEL_NONE)) {
7991 err = STATUS_INVALID_OPLOCK_PROTOCOL;
7992 oplock_change_type = OPLOCK_WRITE_TO_NONE;
7993 } else if (opinfo->level == SMB2_OPLOCK_LEVEL_II &&
7994 req_oplevel != SMB2_OPLOCK_LEVEL_NONE) {
7995 err = STATUS_INVALID_OPLOCK_PROTOCOL;
7996 oplock_change_type = OPLOCK_READ_TO_NONE;
7997 } else if (req_oplevel == SMB2_OPLOCK_LEVEL_II ||
7998 req_oplevel == SMB2_OPLOCK_LEVEL_NONE) {
7999 err = STATUS_INVALID_DEVICE_STATE;
8000 if ((opinfo->level == SMB2_OPLOCK_LEVEL_EXCLUSIVE ||
8001 opinfo->level == SMB2_OPLOCK_LEVEL_BATCH) &&
8002 req_oplevel == SMB2_OPLOCK_LEVEL_II) {
8003 oplock_change_type = OPLOCK_WRITE_TO_READ;
8004 } else if ((opinfo->level == SMB2_OPLOCK_LEVEL_EXCLUSIVE ||
8005 opinfo->level == SMB2_OPLOCK_LEVEL_BATCH) &&
8006 req_oplevel == SMB2_OPLOCK_LEVEL_NONE) {
8007 oplock_change_type = OPLOCK_WRITE_TO_NONE;
8008 } else if (opinfo->level == SMB2_OPLOCK_LEVEL_II &&
8009 req_oplevel == SMB2_OPLOCK_LEVEL_NONE) {
8010 oplock_change_type = OPLOCK_READ_TO_NONE;
8012 oplock_change_type = 0;
8015 oplock_change_type = 0;
8018 switch (oplock_change_type) {
8019 case OPLOCK_WRITE_TO_READ:
8020 ret = opinfo_write_to_read(opinfo);
8021 rsp_oplevel = SMB2_OPLOCK_LEVEL_II;
8023 case OPLOCK_WRITE_TO_NONE:
8024 ret = opinfo_write_to_none(opinfo);
8025 rsp_oplevel = SMB2_OPLOCK_LEVEL_NONE;
8027 case OPLOCK_READ_TO_NONE:
8028 ret = opinfo_read_to_none(opinfo);
8029 rsp_oplevel = SMB2_OPLOCK_LEVEL_NONE;
8032 pr_err("unknown oplock change 0x%x -> 0x%x\n",
8033 opinfo->level, rsp_oplevel);
8037 rsp->hdr.Status = err;
8042 ksmbd_fd_put(work, fp);
8043 opinfo->op_state = OPLOCK_STATE_NONE;
8044 wake_up_interruptible_all(&opinfo->oplock_q);
8046 rsp->StructureSize = cpu_to_le16(24);
8047 rsp->OplockLevel = rsp_oplevel;
8050 rsp->VolatileFid = volatile_id;
8051 rsp->PersistentFid = persistent_id;
8052 inc_rfc1001_len(work->response_buf, 24);
8056 opinfo->op_state = OPLOCK_STATE_NONE;
8057 wake_up_interruptible_all(&opinfo->oplock_q);
8060 ksmbd_fd_put(work, fp);
8061 smb2_set_err_rsp(work);
8064 static int check_lease_state(struct lease *lease, __le32 req_state)
8066 if ((lease->new_state ==
8067 (SMB2_LEASE_READ_CACHING_LE | SMB2_LEASE_HANDLE_CACHING_LE)) &&
8068 !(req_state & SMB2_LEASE_WRITE_CACHING_LE)) {
8069 lease->new_state = req_state;
8073 if (lease->new_state == req_state)
8080 * smb21_lease_break_ack() - handler for smb2.1 lease break command
8081 * @work: smb work containing lease break command buffer
8085 static void smb21_lease_break_ack(struct ksmbd_work *work)
8087 struct ksmbd_conn *conn = work->conn;
8088 struct smb2_lease_ack *req = smb2_get_msg(work->request_buf);
8089 struct smb2_lease_ack *rsp = smb2_get_msg(work->response_buf);
8090 struct oplock_info *opinfo;
8093 unsigned int lease_change_type;
8095 struct lease *lease;
8097 ksmbd_debug(OPLOCK, "smb21 lease break, lease state(0x%x)\n",
8098 le32_to_cpu(req->LeaseState));
8099 opinfo = lookup_lease_in_table(conn, req->LeaseKey);
8101 ksmbd_debug(OPLOCK, "file not opened\n");
8102 smb2_set_err_rsp(work);
8103 rsp->hdr.Status = STATUS_UNSUCCESSFUL;
8106 lease = opinfo->o_lease;
8108 if (opinfo->op_state == OPLOCK_STATE_NONE) {
8109 pr_err("unexpected lease break state 0x%x\n",
8111 rsp->hdr.Status = STATUS_UNSUCCESSFUL;
8115 if (check_lease_state(lease, req->LeaseState)) {
8116 rsp->hdr.Status = STATUS_REQUEST_NOT_ACCEPTED;
8118 "req lease state: 0x%x, expected state: 0x%x\n",
8119 req->LeaseState, lease->new_state);
8123 if (!atomic_read(&opinfo->breaking_cnt)) {
8124 rsp->hdr.Status = STATUS_UNSUCCESSFUL;
8128 /* check for bad lease state */
8129 if (req->LeaseState &
8130 (~(SMB2_LEASE_READ_CACHING_LE | SMB2_LEASE_HANDLE_CACHING_LE))) {
8131 err = STATUS_INVALID_OPLOCK_PROTOCOL;
8132 if (lease->state & SMB2_LEASE_WRITE_CACHING_LE)
8133 lease_change_type = OPLOCK_WRITE_TO_NONE;
8135 lease_change_type = OPLOCK_READ_TO_NONE;
8136 ksmbd_debug(OPLOCK, "handle bad lease state 0x%x -> 0x%x\n",
8137 le32_to_cpu(lease->state),
8138 le32_to_cpu(req->LeaseState));
8139 } else if (lease->state == SMB2_LEASE_READ_CACHING_LE &&
8140 req->LeaseState != SMB2_LEASE_NONE_LE) {
8141 err = STATUS_INVALID_OPLOCK_PROTOCOL;
8142 lease_change_type = OPLOCK_READ_TO_NONE;
8143 ksmbd_debug(OPLOCK, "handle bad lease state 0x%x -> 0x%x\n",
8144 le32_to_cpu(lease->state),
8145 le32_to_cpu(req->LeaseState));
8147 /* valid lease state changes */
8148 err = STATUS_INVALID_DEVICE_STATE;
8149 if (req->LeaseState == SMB2_LEASE_NONE_LE) {
8150 if (lease->state & SMB2_LEASE_WRITE_CACHING_LE)
8151 lease_change_type = OPLOCK_WRITE_TO_NONE;
8153 lease_change_type = OPLOCK_READ_TO_NONE;
8154 } else if (req->LeaseState & SMB2_LEASE_READ_CACHING_LE) {
8155 if (lease->state & SMB2_LEASE_WRITE_CACHING_LE)
8156 lease_change_type = OPLOCK_WRITE_TO_READ;
8158 lease_change_type = OPLOCK_READ_HANDLE_TO_READ;
8160 lease_change_type = 0;
8164 switch (lease_change_type) {
8165 case OPLOCK_WRITE_TO_READ:
8166 ret = opinfo_write_to_read(opinfo);
8168 case OPLOCK_READ_HANDLE_TO_READ:
8169 ret = opinfo_read_handle_to_read(opinfo);
8171 case OPLOCK_WRITE_TO_NONE:
8172 ret = opinfo_write_to_none(opinfo);
8174 case OPLOCK_READ_TO_NONE:
8175 ret = opinfo_read_to_none(opinfo);
8178 ksmbd_debug(OPLOCK, "unknown lease change 0x%x -> 0x%x\n",
8179 le32_to_cpu(lease->state),
8180 le32_to_cpu(req->LeaseState));
8183 lease_state = lease->state;
8184 opinfo->op_state = OPLOCK_STATE_NONE;
8185 wake_up_interruptible_all(&opinfo->oplock_q);
8186 atomic_dec(&opinfo->breaking_cnt);
8187 wake_up_interruptible_all(&opinfo->oplock_brk);
8191 rsp->hdr.Status = err;
8195 rsp->StructureSize = cpu_to_le16(36);
8198 memcpy(rsp->LeaseKey, req->LeaseKey, 16);
8199 rsp->LeaseState = lease_state;
8200 rsp->LeaseDuration = 0;
8201 inc_rfc1001_len(work->response_buf, 36);
8205 opinfo->op_state = OPLOCK_STATE_NONE;
8206 wake_up_interruptible_all(&opinfo->oplock_q);
8207 atomic_dec(&opinfo->breaking_cnt);
8208 wake_up_interruptible_all(&opinfo->oplock_brk);
8211 smb2_set_err_rsp(work);
8215 * smb2_oplock_break() - dispatcher for smb2.0 and 2.1 oplock/lease break
8216 * @work: smb work containing oplock/lease break command buffer
8220 int smb2_oplock_break(struct ksmbd_work *work)
8222 struct smb2_oplock_break *req = smb2_get_msg(work->request_buf);
8223 struct smb2_oplock_break *rsp = smb2_get_msg(work->response_buf);
8225 switch (le16_to_cpu(req->StructureSize)) {
8226 case OP_BREAK_STRUCT_SIZE_20:
8227 smb20_oplock_break_ack(work);
8229 case OP_BREAK_STRUCT_SIZE_21:
8230 smb21_lease_break_ack(work);
8233 ksmbd_debug(OPLOCK, "invalid break cmd %d\n",
8234 le16_to_cpu(req->StructureSize));
8235 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
8236 smb2_set_err_rsp(work);
8243 * smb2_notify() - handler for smb2 notify request
8244 * @work: smb work containing notify command buffer
8248 int smb2_notify(struct ksmbd_work *work)
8250 struct smb2_change_notify_req *req;
8251 struct smb2_change_notify_rsp *rsp;
8253 WORK_BUFFERS(work, req, rsp);
8255 if (work->next_smb2_rcv_hdr_off && req->hdr.NextCommand) {
8256 rsp->hdr.Status = STATUS_INTERNAL_ERROR;
8257 smb2_set_err_rsp(work);
8261 smb2_set_err_rsp(work);
8262 rsp->hdr.Status = STATUS_NOT_IMPLEMENTED;
8267 * smb2_is_sign_req() - handler for checking packet signing status
8268 * @work: smb work containing notify command buffer
8269 * @command: SMB2 command id
8271 * Return: true if packed is signed, false otherwise
8273 bool smb2_is_sign_req(struct ksmbd_work *work, unsigned int command)
8275 struct smb2_hdr *rcv_hdr2 = smb2_get_msg(work->request_buf);
8277 if ((rcv_hdr2->Flags & SMB2_FLAGS_SIGNED) &&
8278 command != SMB2_NEGOTIATE_HE &&
8279 command != SMB2_SESSION_SETUP_HE &&
8280 command != SMB2_OPLOCK_BREAK_HE)
8287 * smb2_check_sign_req() - handler for req packet sign processing
8288 * @work: smb work containing notify command buffer
8290 * Return: 1 on success, 0 otherwise
8292 int smb2_check_sign_req(struct ksmbd_work *work)
8294 struct smb2_hdr *hdr;
8295 char signature_req[SMB2_SIGNATURE_SIZE];
8296 char signature[SMB2_HMACSHA256_SIZE];
8300 hdr = smb2_get_msg(work->request_buf);
8301 if (work->next_smb2_rcv_hdr_off)
8302 hdr = ksmbd_req_buf_next(work);
8304 if (!hdr->NextCommand && !work->next_smb2_rcv_hdr_off)
8305 len = get_rfc1002_len(work->request_buf);
8306 else if (hdr->NextCommand)
8307 len = le32_to_cpu(hdr->NextCommand);
8309 len = get_rfc1002_len(work->request_buf) -
8310 work->next_smb2_rcv_hdr_off;
8312 memcpy(signature_req, hdr->Signature, SMB2_SIGNATURE_SIZE);
8313 memset(hdr->Signature, 0, SMB2_SIGNATURE_SIZE);
8315 iov[0].iov_base = (char *)&hdr->ProtocolId;
8316 iov[0].iov_len = len;
8318 if (ksmbd_sign_smb2_pdu(work->conn, work->sess->sess_key, iov, 1,
8322 if (memcmp(signature, signature_req, SMB2_SIGNATURE_SIZE)) {
8323 pr_err("bad smb2 signature\n");
8331 * smb2_set_sign_rsp() - handler for rsp packet sign processing
8332 * @work: smb work containing notify command buffer
8335 void smb2_set_sign_rsp(struct ksmbd_work *work)
8337 struct smb2_hdr *hdr;
8338 struct smb2_hdr *req_hdr;
8339 char signature[SMB2_HMACSHA256_SIZE];
8344 hdr = smb2_get_msg(work->response_buf);
8345 if (work->next_smb2_rsp_hdr_off)
8346 hdr = ksmbd_resp_buf_next(work);
8348 req_hdr = ksmbd_req_buf_next(work);
8350 if (!work->next_smb2_rsp_hdr_off) {
8351 len = get_rfc1002_len(work->response_buf);
8352 if (req_hdr->NextCommand)
8353 len = ALIGN(len, 8);
8355 len = get_rfc1002_len(work->response_buf) -
8356 work->next_smb2_rsp_hdr_off;
8357 len = ALIGN(len, 8);
8360 if (req_hdr->NextCommand)
8361 hdr->NextCommand = cpu_to_le32(len);
8363 hdr->Flags |= SMB2_FLAGS_SIGNED;
8364 memset(hdr->Signature, 0, SMB2_SIGNATURE_SIZE);
8366 iov[0].iov_base = (char *)&hdr->ProtocolId;
8367 iov[0].iov_len = len;
8369 if (work->aux_payload_sz) {
8370 iov[0].iov_len -= work->aux_payload_sz;
8372 iov[1].iov_base = work->aux_payload_buf;
8373 iov[1].iov_len = work->aux_payload_sz;
8377 if (!ksmbd_sign_smb2_pdu(work->conn, work->sess->sess_key, iov, n_vec,
8379 memcpy(hdr->Signature, signature, SMB2_SIGNATURE_SIZE);
8383 * smb3_check_sign_req() - handler for req packet sign processing
8384 * @work: smb work containing notify command buffer
8386 * Return: 1 on success, 0 otherwise
8388 int smb3_check_sign_req(struct ksmbd_work *work)
8390 struct ksmbd_conn *conn = work->conn;
8392 struct smb2_hdr *hdr;
8393 struct channel *chann;
8394 char signature_req[SMB2_SIGNATURE_SIZE];
8395 char signature[SMB2_CMACAES_SIZE];
8399 hdr = smb2_get_msg(work->request_buf);
8400 if (work->next_smb2_rcv_hdr_off)
8401 hdr = ksmbd_req_buf_next(work);
8403 if (!hdr->NextCommand && !work->next_smb2_rcv_hdr_off)
8404 len = get_rfc1002_len(work->request_buf);
8405 else if (hdr->NextCommand)
8406 len = le32_to_cpu(hdr->NextCommand);
8408 len = get_rfc1002_len(work->request_buf) -
8409 work->next_smb2_rcv_hdr_off;
8411 if (le16_to_cpu(hdr->Command) == SMB2_SESSION_SETUP_HE) {
8412 signing_key = work->sess->smb3signingkey;
8414 read_lock(&work->sess->chann_lock);
8415 chann = lookup_chann_list(work->sess, conn);
8417 read_unlock(&work->sess->chann_lock);
8420 signing_key = chann->smb3signingkey;
8421 read_unlock(&work->sess->chann_lock);
8425 pr_err("SMB3 signing key is not generated\n");
8429 memcpy(signature_req, hdr->Signature, SMB2_SIGNATURE_SIZE);
8430 memset(hdr->Signature, 0, SMB2_SIGNATURE_SIZE);
8431 iov[0].iov_base = (char *)&hdr->ProtocolId;
8432 iov[0].iov_len = len;
8434 if (ksmbd_sign_smb3_pdu(conn, signing_key, iov, 1, signature))
8437 if (memcmp(signature, signature_req, SMB2_SIGNATURE_SIZE)) {
8438 pr_err("bad smb2 signature\n");
8446 * smb3_set_sign_rsp() - handler for rsp packet sign processing
8447 * @work: smb work containing notify command buffer
8450 void smb3_set_sign_rsp(struct ksmbd_work *work)
8452 struct ksmbd_conn *conn = work->conn;
8453 struct smb2_hdr *req_hdr, *hdr;
8454 struct channel *chann;
8455 char signature[SMB2_CMACAES_SIZE];
8461 hdr = smb2_get_msg(work->response_buf);
8462 if (work->next_smb2_rsp_hdr_off)
8463 hdr = ksmbd_resp_buf_next(work);
8465 req_hdr = ksmbd_req_buf_next(work);
8467 if (!work->next_smb2_rsp_hdr_off) {
8468 len = get_rfc1002_len(work->response_buf);
8469 if (req_hdr->NextCommand)
8470 len = ALIGN(len, 8);
8472 len = get_rfc1002_len(work->response_buf) -
8473 work->next_smb2_rsp_hdr_off;
8474 len = ALIGN(len, 8);
8477 if (conn->binding == false &&
8478 le16_to_cpu(hdr->Command) == SMB2_SESSION_SETUP_HE) {
8479 signing_key = work->sess->smb3signingkey;
8481 read_lock(&work->sess->chann_lock);
8482 chann = lookup_chann_list(work->sess, work->conn);
8484 read_unlock(&work->sess->chann_lock);
8487 signing_key = chann->smb3signingkey;
8488 read_unlock(&work->sess->chann_lock);
8494 if (req_hdr->NextCommand)
8495 hdr->NextCommand = cpu_to_le32(len);
8497 hdr->Flags |= SMB2_FLAGS_SIGNED;
8498 memset(hdr->Signature, 0, SMB2_SIGNATURE_SIZE);
8499 iov[0].iov_base = (char *)&hdr->ProtocolId;
8500 iov[0].iov_len = len;
8501 if (work->aux_payload_sz) {
8502 iov[0].iov_len -= work->aux_payload_sz;
8503 iov[1].iov_base = work->aux_payload_buf;
8504 iov[1].iov_len = work->aux_payload_sz;
8508 if (!ksmbd_sign_smb3_pdu(conn, signing_key, iov, n_vec, signature))
8509 memcpy(hdr->Signature, signature, SMB2_SIGNATURE_SIZE);
8513 * smb3_preauth_hash_rsp() - handler for computing preauth hash on response
8514 * @work: smb work containing response buffer
8517 void smb3_preauth_hash_rsp(struct ksmbd_work *work)
8519 struct ksmbd_conn *conn = work->conn;
8520 struct ksmbd_session *sess = work->sess;
8521 struct smb2_hdr *req, *rsp;
8523 if (conn->dialect != SMB311_PROT_ID)
8526 WORK_BUFFERS(work, req, rsp);
8528 if (le16_to_cpu(req->Command) == SMB2_NEGOTIATE_HE &&
8530 ksmbd_gen_preauth_integrity_hash(conn, work->response_buf,
8531 conn->preauth_info->Preauth_HashValue);
8533 if (le16_to_cpu(rsp->Command) == SMB2_SESSION_SETUP_HE && sess) {
8536 if (conn->binding) {
8537 struct preauth_session *preauth_sess;
8539 preauth_sess = ksmbd_preauth_session_lookup(conn, sess->id);
8542 hash_value = preauth_sess->Preauth_HashValue;
8544 hash_value = sess->Preauth_HashValue;
8548 ksmbd_gen_preauth_integrity_hash(conn, work->response_buf,
8553 static void fill_transform_hdr(void *tr_buf, char *old_buf, __le16 cipher_type)
8555 struct smb2_transform_hdr *tr_hdr = tr_buf + 4;
8556 struct smb2_hdr *hdr = smb2_get_msg(old_buf);
8557 unsigned int orig_len = get_rfc1002_len(old_buf);
8559 /* tr_buf must be cleared by the caller */
8560 tr_hdr->ProtocolId = SMB2_TRANSFORM_PROTO_NUM;
8561 tr_hdr->OriginalMessageSize = cpu_to_le32(orig_len);
8562 tr_hdr->Flags = cpu_to_le16(TRANSFORM_FLAG_ENCRYPTED);
8563 if (cipher_type == SMB2_ENCRYPTION_AES128_GCM ||
8564 cipher_type == SMB2_ENCRYPTION_AES256_GCM)
8565 get_random_bytes(&tr_hdr->Nonce, SMB3_AES_GCM_NONCE);
8567 get_random_bytes(&tr_hdr->Nonce, SMB3_AES_CCM_NONCE);
8568 memcpy(&tr_hdr->SessionId, &hdr->SessionId, 8);
8569 inc_rfc1001_len(tr_buf, sizeof(struct smb2_transform_hdr));
8570 inc_rfc1001_len(tr_buf, orig_len);
8573 int smb3_encrypt_resp(struct ksmbd_work *work)
8575 char *buf = work->response_buf;
8578 int buf_size = 0, rq_nvec = 2 + (work->aux_payload_sz ? 1 : 0);
8580 if (ARRAY_SIZE(iov) < rq_nvec)
8583 work->tr_buf = kzalloc(sizeof(struct smb2_transform_hdr) + 4, GFP_KERNEL);
8587 /* fill transform header */
8588 fill_transform_hdr(work->tr_buf, buf, work->conn->cipher_type);
8590 iov[0].iov_base = work->tr_buf;
8591 iov[0].iov_len = sizeof(struct smb2_transform_hdr) + 4;
8592 buf_size += iov[0].iov_len - 4;
8594 iov[1].iov_base = buf + 4;
8595 iov[1].iov_len = get_rfc1002_len(buf);
8596 if (work->aux_payload_sz) {
8597 iov[1].iov_len = work->resp_hdr_sz - 4;
8599 iov[2].iov_base = work->aux_payload_buf;
8600 iov[2].iov_len = work->aux_payload_sz;
8601 buf_size += iov[2].iov_len;
8603 buf_size += iov[1].iov_len;
8604 work->resp_hdr_sz = iov[1].iov_len;
8606 rc = ksmbd_crypt_message(work, iov, rq_nvec, 1);
8610 memmove(buf, iov[1].iov_base, iov[1].iov_len);
8611 *(__be32 *)work->tr_buf = cpu_to_be32(buf_size);
8616 bool smb3_is_transform_hdr(void *buf)
8618 struct smb2_transform_hdr *trhdr = smb2_get_msg(buf);
8620 return trhdr->ProtocolId == SMB2_TRANSFORM_PROTO_NUM;
8623 int smb3_decrypt_req(struct ksmbd_work *work)
8625 struct ksmbd_session *sess;
8626 char *buf = work->request_buf;
8627 unsigned int pdu_length = get_rfc1002_len(buf);
8629 int buf_data_size = pdu_length - sizeof(struct smb2_transform_hdr);
8630 struct smb2_transform_hdr *tr_hdr = smb2_get_msg(buf);
8633 if (buf_data_size < sizeof(struct smb2_hdr)) {
8634 pr_err("Transform message is too small (%u)\n",
8636 return -ECONNABORTED;
8639 if (buf_data_size < le32_to_cpu(tr_hdr->OriginalMessageSize)) {
8640 pr_err("Transform message is broken\n");
8641 return -ECONNABORTED;
8644 sess = ksmbd_session_lookup_all(work->conn, le64_to_cpu(tr_hdr->SessionId));
8646 pr_err("invalid session id(%llx) in transform header\n",
8647 le64_to_cpu(tr_hdr->SessionId));
8648 return -ECONNABORTED;
8651 iov[0].iov_base = buf;
8652 iov[0].iov_len = sizeof(struct smb2_transform_hdr) + 4;
8653 iov[1].iov_base = buf + sizeof(struct smb2_transform_hdr) + 4;
8654 iov[1].iov_len = buf_data_size;
8655 rc = ksmbd_crypt_message(work, iov, 2, 0);
8659 memmove(buf + 4, iov[1].iov_base, buf_data_size);
8660 *(__be32 *)buf = cpu_to_be32(buf_data_size);
8665 bool smb3_11_final_sess_setup_resp(struct ksmbd_work *work)
8667 struct ksmbd_conn *conn = work->conn;
8668 struct smb2_hdr *rsp = smb2_get_msg(work->response_buf);
8670 if (conn->dialect < SMB30_PROT_ID)
8673 if (work->next_smb2_rcv_hdr_off)
8674 rsp = ksmbd_resp_buf_next(work);
8676 if (le16_to_cpu(rsp->Command) == SMB2_SESSION_SETUP_HE &&
8677 rsp->Status == STATUS_SUCCESS)