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 user_namespace *user_ns = mnt_user_ns(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(user_ns,
2231 XATTR_USER_PREFIX_LEN +
2232 eabuf->EaNameLength);
2234 /* delete the EA only when it exits */
2236 rc = ksmbd_vfs_remove_xattr(user_ns,
2242 "remove xattr failed(%d)\n",
2248 /* if the EA doesn't exist, just do nothing. */
2251 rc = ksmbd_vfs_setxattr(user_ns,
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 user_namespace *user_ns = mnt_user_ns(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(user_ns,
2304 if (fp->cdoption == FILE_OPEN_LE) {
2305 ksmbd_debug(SMB, "XATTR stream name lookup failed: %d\n", rc);
2309 rc = ksmbd_vfs_setxattr(user_ns, 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 user_namespace *user_ns = mnt_user_ns(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(user_ns, 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_user_ns(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_user_ns(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 user_namespace *user_ns = NULL;
2517 struct create_context *context;
2518 struct lease_ctx_info *lc = NULL;
2519 struct create_ea_buf_req *ea_buf = NULL;
2520 struct oplock_info *opinfo;
2521 __le32 *next_ptr = NULL;
2522 int req_op_level = 0, open_flags = 0, may_flags = 0, file_info = 0;
2524 int contxt_cnt = 0, query_disk_id = 0;
2525 int maximal_access_ctxt = 0, posix_ctxt = 0;
2529 char *stream_name = NULL;
2530 bool file_present = false, created = false, already_permitted = false;
2531 int share_ret, need_truncate = 0;
2533 umode_t posix_mode = 0;
2534 __le32 daccess, maximal_access = 0;
2536 WORK_BUFFERS(work, req, rsp);
2538 if (req->hdr.NextCommand && !work->next_smb2_rcv_hdr_off &&
2539 (req->hdr.Flags & SMB2_FLAGS_RELATED_OPERATIONS)) {
2540 ksmbd_debug(SMB, "invalid flag in chained command\n");
2541 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
2542 smb2_set_err_rsp(work);
2546 if (test_share_config_flag(share, KSMBD_SHARE_FLAG_PIPE)) {
2547 ksmbd_debug(SMB, "IPC pipe create request\n");
2548 return create_smb2_pipe(work);
2551 if (req->NameLength) {
2552 if ((req->CreateOptions & FILE_DIRECTORY_FILE_LE) &&
2553 *(char *)req->Buffer == '\\') {
2554 pr_err("not allow directory name included leading slash\n");
2559 name = smb2_get_name(req->Buffer,
2560 le16_to_cpu(req->NameLength),
2561 work->conn->local_nls);
2570 ksmbd_debug(SMB, "converted name = %s\n", name);
2571 if (strchr(name, ':')) {
2572 if (!test_share_config_flag(work->tcon->share_conf,
2573 KSMBD_SHARE_FLAG_STREAMS)) {
2577 rc = parse_stream_name(name, &stream_name, &s_type);
2582 rc = ksmbd_validate_filename(name);
2586 if (ksmbd_share_veto_filename(share, name)) {
2588 ksmbd_debug(SMB, "Reject open(), vetoed file: %s\n",
2593 name = kstrdup("", GFP_KERNEL);
2600 req_op_level = req->RequestedOplockLevel;
2601 if (req_op_level == SMB2_OPLOCK_LEVEL_LEASE)
2602 lc = parse_lease_state(req);
2604 if (le32_to_cpu(req->ImpersonationLevel) > le32_to_cpu(IL_DELEGATE)) {
2605 pr_err("Invalid impersonationlevel : 0x%x\n",
2606 le32_to_cpu(req->ImpersonationLevel));
2608 rsp->hdr.Status = STATUS_BAD_IMPERSONATION_LEVEL;
2612 if (req->CreateOptions && !(req->CreateOptions & CREATE_OPTIONS_MASK_LE)) {
2613 pr_err("Invalid create options : 0x%x\n",
2614 le32_to_cpu(req->CreateOptions));
2618 if (req->CreateOptions & FILE_SEQUENTIAL_ONLY_LE &&
2619 req->CreateOptions & FILE_RANDOM_ACCESS_LE)
2620 req->CreateOptions = ~(FILE_SEQUENTIAL_ONLY_LE);
2622 if (req->CreateOptions &
2623 (FILE_OPEN_BY_FILE_ID_LE | CREATE_TREE_CONNECTION |
2624 FILE_RESERVE_OPFILTER_LE)) {
2629 if (req->CreateOptions & FILE_DIRECTORY_FILE_LE) {
2630 if (req->CreateOptions & FILE_NON_DIRECTORY_FILE_LE) {
2633 } else if (req->CreateOptions & FILE_NO_COMPRESSION_LE) {
2634 req->CreateOptions = ~(FILE_NO_COMPRESSION_LE);
2639 if (le32_to_cpu(req->CreateDisposition) >
2640 le32_to_cpu(FILE_OVERWRITE_IF_LE)) {
2641 pr_err("Invalid create disposition : 0x%x\n",
2642 le32_to_cpu(req->CreateDisposition));
2647 if (!(req->DesiredAccess & DESIRED_ACCESS_MASK)) {
2648 pr_err("Invalid desired access : 0x%x\n",
2649 le32_to_cpu(req->DesiredAccess));
2654 if (req->FileAttributes && !(req->FileAttributes & FILE_ATTRIBUTE_MASK_LE)) {
2655 pr_err("Invalid file attribute : 0x%x\n",
2656 le32_to_cpu(req->FileAttributes));
2661 if (req->CreateContextsOffset) {
2662 /* Parse non-durable handle create contexts */
2663 context = smb2_find_context_vals(req, SMB2_CREATE_EA_BUFFER);
2664 if (IS_ERR(context)) {
2665 rc = PTR_ERR(context);
2667 } else if (context) {
2668 ea_buf = (struct create_ea_buf_req *)context;
2669 if (le16_to_cpu(context->DataOffset) +
2670 le32_to_cpu(context->DataLength) <
2671 sizeof(struct create_ea_buf_req)) {
2675 if (req->CreateOptions & FILE_NO_EA_KNOWLEDGE_LE) {
2676 rsp->hdr.Status = STATUS_ACCESS_DENIED;
2682 context = smb2_find_context_vals(req,
2683 SMB2_CREATE_QUERY_MAXIMAL_ACCESS_REQUEST);
2684 if (IS_ERR(context)) {
2685 rc = PTR_ERR(context);
2687 } else if (context) {
2689 "get query maximal access context\n");
2690 maximal_access_ctxt = 1;
2693 context = smb2_find_context_vals(req,
2694 SMB2_CREATE_TIMEWARP_REQUEST);
2695 if (IS_ERR(context)) {
2696 rc = PTR_ERR(context);
2698 } else if (context) {
2699 ksmbd_debug(SMB, "get timewarp context\n");
2704 if (tcon->posix_extensions) {
2705 context = smb2_find_context_vals(req,
2706 SMB2_CREATE_TAG_POSIX);
2707 if (IS_ERR(context)) {
2708 rc = PTR_ERR(context);
2710 } else if (context) {
2711 struct create_posix *posix =
2712 (struct create_posix *)context;
2713 if (le16_to_cpu(context->DataOffset) +
2714 le32_to_cpu(context->DataLength) <
2715 sizeof(struct create_posix) - 4) {
2719 ksmbd_debug(SMB, "get posix context\n");
2721 posix_mode = le32_to_cpu(posix->Mode);
2727 if (ksmbd_override_fsids(work)) {
2732 rc = ksmbd_vfs_kern_path(work, name, LOOKUP_NO_SYMLINKS, &path, 1);
2734 if (req->CreateOptions & FILE_DELETE_ON_CLOSE_LE) {
2736 * If file exists with under flags, return access
2739 if (req->CreateDisposition == FILE_OVERWRITE_IF_LE ||
2740 req->CreateDisposition == FILE_OPEN_IF_LE) {
2746 if (!test_tree_conn_flag(tcon, KSMBD_TREE_CONN_FLAG_WRITABLE)) {
2748 "User does not have write permission\n");
2753 } else if (d_is_symlink(path.dentry)) {
2763 ksmbd_debug(SMB, "can not get linux path for %s, rc = %d\n",
2767 file_present = true;
2768 user_ns = mnt_user_ns(path.mnt);
2771 if (req->CreateOptions & FILE_DIRECTORY_FILE_LE) {
2772 if (s_type == DATA_STREAM) {
2774 rsp->hdr.Status = STATUS_NOT_A_DIRECTORY;
2777 if (file_present && S_ISDIR(d_inode(path.dentry)->i_mode) &&
2778 s_type == DATA_STREAM) {
2780 rsp->hdr.Status = STATUS_FILE_IS_A_DIRECTORY;
2784 if (req->CreateOptions & FILE_DIRECTORY_FILE_LE &&
2785 req->FileAttributes & FILE_ATTRIBUTE_NORMAL_LE) {
2786 rsp->hdr.Status = STATUS_NOT_A_DIRECTORY;
2794 if (file_present && req->CreateOptions & FILE_NON_DIRECTORY_FILE_LE &&
2795 S_ISDIR(d_inode(path.dentry)->i_mode) &&
2796 !(req->CreateOptions & FILE_DELETE_ON_CLOSE_LE)) {
2797 ksmbd_debug(SMB, "open() argument is a directory: %s, %x\n",
2798 name, req->CreateOptions);
2799 rsp->hdr.Status = STATUS_FILE_IS_A_DIRECTORY;
2804 if (file_present && (req->CreateOptions & FILE_DIRECTORY_FILE_LE) &&
2805 !(req->CreateDisposition == FILE_CREATE_LE) &&
2806 !S_ISDIR(d_inode(path.dentry)->i_mode)) {
2807 rsp->hdr.Status = STATUS_NOT_A_DIRECTORY;
2812 if (!stream_name && file_present &&
2813 req->CreateDisposition == FILE_CREATE_LE) {
2818 daccess = smb_map_generic_desired_access(req->DesiredAccess);
2820 if (file_present && !(req->CreateOptions & FILE_DELETE_ON_CLOSE_LE)) {
2821 rc = smb_check_perm_dacl(conn, &path, &daccess,
2827 if (daccess & FILE_MAXIMAL_ACCESS_LE) {
2828 if (!file_present) {
2829 daccess = cpu_to_le32(GENERIC_ALL_FLAGS);
2831 rc = ksmbd_vfs_query_maximal_access(user_ns,
2836 already_permitted = true;
2838 maximal_access = daccess;
2841 open_flags = smb2_create_open_flags(file_present, daccess,
2842 req->CreateDisposition,
2845 if (!test_tree_conn_flag(tcon, KSMBD_TREE_CONN_FLAG_WRITABLE)) {
2846 if (open_flags & O_CREAT) {
2848 "User does not have write permission\n");
2854 /*create file if not present */
2855 if (!file_present) {
2856 rc = smb2_creat(work, &path, name, open_flags, posix_mode,
2857 req->CreateOptions & FILE_DIRECTORY_FILE_LE);
2859 if (rc == -ENOENT) {
2861 rsp->hdr.Status = STATUS_OBJECT_PATH_NOT_FOUND;
2867 user_ns = mnt_user_ns(path.mnt);
2869 if (le32_to_cpu(ea_buf->ccontext.DataLength) <
2870 sizeof(struct smb2_ea_info)) {
2875 rc = smb2_set_ea(&ea_buf->ea,
2876 le32_to_cpu(ea_buf->ccontext.DataLength),
2878 if (rc == -EOPNOTSUPP)
2883 } else if (!already_permitted) {
2884 /* FILE_READ_ATTRIBUTE is allowed without inode_permission,
2885 * because execute(search) permission on a parent directory,
2886 * is already granted.
2888 if (daccess & ~(FILE_READ_ATTRIBUTES_LE | FILE_READ_CONTROL_LE)) {
2889 rc = inode_permission(user_ns,
2890 d_inode(path.dentry),
2895 if ((daccess & FILE_DELETE_LE) ||
2896 (req->CreateOptions & FILE_DELETE_ON_CLOSE_LE)) {
2897 rc = ksmbd_vfs_may_delete(user_ns,
2905 rc = ksmbd_query_inode_status(d_inode(path.dentry->d_parent));
2906 if (rc == KSMBD_INODE_STATUS_PENDING_DELETE) {
2912 filp = dentry_open(&path, open_flags, current_cred());
2915 pr_err("dentry open for dir failed, rc %d\n", rc);
2920 if (!(open_flags & O_TRUNC))
2921 file_info = FILE_OPENED;
2923 file_info = FILE_OVERWRITTEN;
2925 if ((req->CreateDisposition & FILE_CREATE_MASK_LE) ==
2927 file_info = FILE_SUPERSEDED;
2928 } else if (open_flags & O_CREAT) {
2929 file_info = FILE_CREATED;
2932 ksmbd_vfs_set_fadvise(filp, req->CreateOptions);
2934 /* Obtain Volatile-ID */
2935 fp = ksmbd_open_fd(work, filp);
2943 /* Get Persistent-ID */
2944 ksmbd_open_durable_fd(fp);
2945 if (!has_file_id(fp->persistent_id)) {
2950 fp->cdoption = req->CreateDisposition;
2951 fp->daccess = daccess;
2952 fp->saccess = req->ShareAccess;
2953 fp->coption = req->CreateOptions;
2955 /* Set default windows and posix acls if creating new file */
2958 struct inode *inode = d_inode(path.dentry);
2960 posix_acl_rc = ksmbd_vfs_inherit_posix_acl(user_ns,
2962 d_inode(path.dentry->d_parent));
2964 ksmbd_debug(SMB, "inherit posix acl failed : %d\n", posix_acl_rc);
2966 if (test_share_config_flag(work->tcon->share_conf,
2967 KSMBD_SHARE_FLAG_ACL_XATTR)) {
2968 rc = smb_inherit_dacl(conn, &path, sess->user->uid,
2973 rc = smb2_create_sd_buffer(work, req, &path);
2976 ksmbd_vfs_set_init_posix_acl(user_ns,
2979 if (test_share_config_flag(work->tcon->share_conf,
2980 KSMBD_SHARE_FLAG_ACL_XATTR)) {
2981 struct smb_fattr fattr;
2982 struct smb_ntsd *pntsd;
2983 int pntsd_size, ace_num = 0;
2985 ksmbd_acls_fattr(&fattr, user_ns, inode);
2987 ace_num = fattr.cf_acls->a_count;
2989 ace_num += fattr.cf_dacls->a_count;
2991 pntsd = kmalloc(sizeof(struct smb_ntsd) +
2992 sizeof(struct smb_sid) * 3 +
2993 sizeof(struct smb_acl) +
2994 sizeof(struct smb_ace) * ace_num * 2,
2999 rc = build_sec_desc(user_ns,
3004 &pntsd_size, &fattr);
3005 posix_acl_release(fattr.cf_acls);
3006 posix_acl_release(fattr.cf_dacls);
3012 rc = ksmbd_vfs_set_sd_xattr(conn,
3019 pr_err("failed to store ntacl in xattr : %d\n",
3028 rc = smb2_set_stream_name_xattr(&path,
3034 file_info = FILE_CREATED;
3037 fp->attrib_only = !(req->DesiredAccess & ~(FILE_READ_ATTRIBUTES_LE |
3038 FILE_WRITE_ATTRIBUTES_LE | FILE_SYNCHRONIZE_LE));
3039 if (!S_ISDIR(file_inode(filp)->i_mode) && open_flags & O_TRUNC &&
3040 !fp->attrib_only && !stream_name) {
3041 smb_break_all_oplock(work, fp);
3045 /* fp should be searchable through ksmbd_inode.m_fp_list
3046 * after daccess, saccess, attrib_only, and stream are
3049 write_lock(&fp->f_ci->m_lock);
3050 list_add(&fp->node, &fp->f_ci->m_fp_list);
3051 write_unlock(&fp->f_ci->m_lock);
3053 /* Check delete pending among previous fp before oplock break */
3054 if (ksmbd_inode_pending_delete(fp)) {
3059 share_ret = ksmbd_smb_check_shared_mode(fp->filp, fp);
3060 if (!test_share_config_flag(work->tcon->share_conf, KSMBD_SHARE_FLAG_OPLOCKS) ||
3061 (req_op_level == SMB2_OPLOCK_LEVEL_LEASE &&
3062 !(conn->vals->capabilities & SMB2_GLOBAL_CAP_LEASING))) {
3063 if (share_ret < 0 && !S_ISDIR(file_inode(fp->filp)->i_mode)) {
3068 if (req_op_level == SMB2_OPLOCK_LEVEL_LEASE) {
3069 req_op_level = smb2_map_lease_to_oplock(lc->req_state);
3071 "lease req for(%s) req oplock state 0x%x, lease state 0x%x\n",
3072 name, req_op_level, lc->req_state);
3073 rc = find_same_lease_key(sess, fp->f_ci, lc);
3076 } else if (open_flags == O_RDONLY &&
3077 (req_op_level == SMB2_OPLOCK_LEVEL_BATCH ||
3078 req_op_level == SMB2_OPLOCK_LEVEL_EXCLUSIVE))
3079 req_op_level = SMB2_OPLOCK_LEVEL_II;
3081 rc = smb_grant_oplock(work, req_op_level,
3082 fp->persistent_id, fp,
3083 le32_to_cpu(req->hdr.Id.SyncId.TreeId),
3089 if (req->CreateOptions & FILE_DELETE_ON_CLOSE_LE)
3090 ksmbd_fd_set_delete_on_close(fp, file_info);
3092 if (need_truncate) {
3093 rc = smb2_create_truncate(&path);
3098 if (req->CreateContextsOffset) {
3099 struct create_alloc_size_req *az_req;
3101 az_req = (struct create_alloc_size_req *)smb2_find_context_vals(req,
3102 SMB2_CREATE_ALLOCATION_SIZE);
3103 if (IS_ERR(az_req)) {
3104 rc = PTR_ERR(az_req);
3106 } else if (az_req) {
3110 if (le16_to_cpu(az_req->ccontext.DataOffset) +
3111 le32_to_cpu(az_req->ccontext.DataLength) <
3112 sizeof(struct create_alloc_size_req)) {
3116 alloc_size = le64_to_cpu(az_req->AllocationSize);
3118 "request smb2 create allocate size : %llu\n",
3120 smb_break_all_levII_oplock(work, fp, 1);
3121 err = vfs_fallocate(fp->filp, FALLOC_FL_KEEP_SIZE, 0,
3125 "vfs_fallocate is failed : %d\n",
3129 context = smb2_find_context_vals(req, SMB2_CREATE_QUERY_ON_DISK_ID);
3130 if (IS_ERR(context)) {
3131 rc = PTR_ERR(context);
3133 } else if (context) {
3134 ksmbd_debug(SMB, "get query on disk id context\n");
3139 rc = ksmbd_vfs_getattr(&path, &stat);
3143 if (stat.result_mask & STATX_BTIME)
3144 fp->create_time = ksmbd_UnixTimeToNT(stat.btime);
3146 fp->create_time = ksmbd_UnixTimeToNT(stat.ctime);
3147 if (req->FileAttributes || fp->f_ci->m_fattr == 0)
3149 cpu_to_le32(smb2_get_dos_mode(&stat, le32_to_cpu(req->FileAttributes)));
3152 smb2_update_xattrs(tcon, &path, fp);
3154 smb2_new_xattrs(tcon, &path, fp);
3156 memcpy(fp->client_guid, conn->ClientGUID, SMB2_CLIENT_GUID_SIZE);
3158 rsp->StructureSize = cpu_to_le16(89);
3160 opinfo = rcu_dereference(fp->f_opinfo);
3161 rsp->OplockLevel = opinfo != NULL ? opinfo->level : 0;
3164 rsp->CreateAction = cpu_to_le32(file_info);
3165 rsp->CreationTime = cpu_to_le64(fp->create_time);
3166 time = ksmbd_UnixTimeToNT(stat.atime);
3167 rsp->LastAccessTime = cpu_to_le64(time);
3168 time = ksmbd_UnixTimeToNT(stat.mtime);
3169 rsp->LastWriteTime = cpu_to_le64(time);
3170 time = ksmbd_UnixTimeToNT(stat.ctime);
3171 rsp->ChangeTime = cpu_to_le64(time);
3172 rsp->AllocationSize = S_ISDIR(stat.mode) ? 0 :
3173 cpu_to_le64(stat.blocks << 9);
3174 rsp->EndofFile = S_ISDIR(stat.mode) ? 0 : cpu_to_le64(stat.size);
3175 rsp->FileAttributes = fp->f_ci->m_fattr;
3179 rsp->PersistentFileId = fp->persistent_id;
3180 rsp->VolatileFileId = fp->volatile_id;
3182 rsp->CreateContextsOffset = 0;
3183 rsp->CreateContextsLength = 0;
3184 inc_rfc1001_len(work->response_buf, 88); /* StructureSize - 1*/
3186 /* If lease is request send lease context response */
3187 if (opinfo && opinfo->is_lease) {
3188 struct create_context *lease_ccontext;
3190 ksmbd_debug(SMB, "lease granted on(%s) lease state 0x%x\n",
3191 name, opinfo->o_lease->state);
3192 rsp->OplockLevel = SMB2_OPLOCK_LEVEL_LEASE;
3194 lease_ccontext = (struct create_context *)rsp->Buffer;
3196 create_lease_buf(rsp->Buffer, opinfo->o_lease);
3197 le32_add_cpu(&rsp->CreateContextsLength,
3198 conn->vals->create_lease_size);
3199 inc_rfc1001_len(work->response_buf,
3200 conn->vals->create_lease_size);
3201 next_ptr = &lease_ccontext->Next;
3202 next_off = conn->vals->create_lease_size;
3205 if (maximal_access_ctxt) {
3206 struct create_context *mxac_ccontext;
3208 if (maximal_access == 0)
3209 ksmbd_vfs_query_maximal_access(user_ns,
3212 mxac_ccontext = (struct create_context *)(rsp->Buffer +
3213 le32_to_cpu(rsp->CreateContextsLength));
3215 create_mxac_rsp_buf(rsp->Buffer +
3216 le32_to_cpu(rsp->CreateContextsLength),
3217 le32_to_cpu(maximal_access));
3218 le32_add_cpu(&rsp->CreateContextsLength,
3219 conn->vals->create_mxac_size);
3220 inc_rfc1001_len(work->response_buf,
3221 conn->vals->create_mxac_size);
3223 *next_ptr = cpu_to_le32(next_off);
3224 next_ptr = &mxac_ccontext->Next;
3225 next_off = conn->vals->create_mxac_size;
3228 if (query_disk_id) {
3229 struct create_context *disk_id_ccontext;
3231 disk_id_ccontext = (struct create_context *)(rsp->Buffer +
3232 le32_to_cpu(rsp->CreateContextsLength));
3234 create_disk_id_rsp_buf(rsp->Buffer +
3235 le32_to_cpu(rsp->CreateContextsLength),
3236 stat.ino, tcon->id);
3237 le32_add_cpu(&rsp->CreateContextsLength,
3238 conn->vals->create_disk_id_size);
3239 inc_rfc1001_len(work->response_buf,
3240 conn->vals->create_disk_id_size);
3242 *next_ptr = cpu_to_le32(next_off);
3243 next_ptr = &disk_id_ccontext->Next;
3244 next_off = conn->vals->create_disk_id_size;
3249 create_posix_rsp_buf(rsp->Buffer +
3250 le32_to_cpu(rsp->CreateContextsLength),
3252 le32_add_cpu(&rsp->CreateContextsLength,
3253 conn->vals->create_posix_size);
3254 inc_rfc1001_len(work->response_buf,
3255 conn->vals->create_posix_size);
3257 *next_ptr = cpu_to_le32(next_off);
3260 if (contxt_cnt > 0) {
3261 rsp->CreateContextsOffset =
3262 cpu_to_le32(offsetof(struct smb2_create_rsp, Buffer));
3266 if (file_present || created)
3268 ksmbd_revert_fsids(work);
3272 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
3273 else if (rc == -EOPNOTSUPP)
3274 rsp->hdr.Status = STATUS_NOT_SUPPORTED;
3275 else if (rc == -EACCES || rc == -ESTALE || rc == -EXDEV)
3276 rsp->hdr.Status = STATUS_ACCESS_DENIED;
3277 else if (rc == -ENOENT)
3278 rsp->hdr.Status = STATUS_OBJECT_NAME_INVALID;
3279 else if (rc == -EPERM)
3280 rsp->hdr.Status = STATUS_SHARING_VIOLATION;
3281 else if (rc == -EBUSY)
3282 rsp->hdr.Status = STATUS_DELETE_PENDING;
3283 else if (rc == -EBADF)
3284 rsp->hdr.Status = STATUS_OBJECT_NAME_NOT_FOUND;
3285 else if (rc == -ENOEXEC)
3286 rsp->hdr.Status = STATUS_DUPLICATE_OBJECTID;
3287 else if (rc == -ENXIO)
3288 rsp->hdr.Status = STATUS_NO_SUCH_DEVICE;
3289 else if (rc == -EEXIST)
3290 rsp->hdr.Status = STATUS_OBJECT_NAME_COLLISION;
3291 else if (rc == -EMFILE)
3292 rsp->hdr.Status = STATUS_INSUFFICIENT_RESOURCES;
3293 if (!rsp->hdr.Status)
3294 rsp->hdr.Status = STATUS_UNEXPECTED_IO_ERROR;
3297 ksmbd_fd_put(work, fp);
3298 smb2_set_err_rsp(work);
3299 ksmbd_debug(SMB, "Error response: %x\n", rsp->hdr.Status);
3308 static int readdir_info_level_struct_sz(int info_level)
3310 switch (info_level) {
3311 case FILE_FULL_DIRECTORY_INFORMATION:
3312 return sizeof(struct file_full_directory_info);
3313 case FILE_BOTH_DIRECTORY_INFORMATION:
3314 return sizeof(struct file_both_directory_info);
3315 case FILE_DIRECTORY_INFORMATION:
3316 return sizeof(struct file_directory_info);
3317 case FILE_NAMES_INFORMATION:
3318 return sizeof(struct file_names_info);
3319 case FILEID_FULL_DIRECTORY_INFORMATION:
3320 return sizeof(struct file_id_full_dir_info);
3321 case FILEID_BOTH_DIRECTORY_INFORMATION:
3322 return sizeof(struct file_id_both_directory_info);
3323 case SMB_FIND_FILE_POSIX_INFO:
3324 return sizeof(struct smb2_posix_info);
3330 static int dentry_name(struct ksmbd_dir_info *d_info, int info_level)
3332 switch (info_level) {
3333 case FILE_FULL_DIRECTORY_INFORMATION:
3335 struct file_full_directory_info *ffdinfo;
3337 ffdinfo = (struct file_full_directory_info *)d_info->rptr;
3338 d_info->rptr += le32_to_cpu(ffdinfo->NextEntryOffset);
3339 d_info->name = ffdinfo->FileName;
3340 d_info->name_len = le32_to_cpu(ffdinfo->FileNameLength);
3343 case FILE_BOTH_DIRECTORY_INFORMATION:
3345 struct file_both_directory_info *fbdinfo;
3347 fbdinfo = (struct file_both_directory_info *)d_info->rptr;
3348 d_info->rptr += le32_to_cpu(fbdinfo->NextEntryOffset);
3349 d_info->name = fbdinfo->FileName;
3350 d_info->name_len = le32_to_cpu(fbdinfo->FileNameLength);
3353 case FILE_DIRECTORY_INFORMATION:
3355 struct file_directory_info *fdinfo;
3357 fdinfo = (struct file_directory_info *)d_info->rptr;
3358 d_info->rptr += le32_to_cpu(fdinfo->NextEntryOffset);
3359 d_info->name = fdinfo->FileName;
3360 d_info->name_len = le32_to_cpu(fdinfo->FileNameLength);
3363 case FILE_NAMES_INFORMATION:
3365 struct file_names_info *fninfo;
3367 fninfo = (struct file_names_info *)d_info->rptr;
3368 d_info->rptr += le32_to_cpu(fninfo->NextEntryOffset);
3369 d_info->name = fninfo->FileName;
3370 d_info->name_len = le32_to_cpu(fninfo->FileNameLength);
3373 case FILEID_FULL_DIRECTORY_INFORMATION:
3375 struct file_id_full_dir_info *dinfo;
3377 dinfo = (struct file_id_full_dir_info *)d_info->rptr;
3378 d_info->rptr += le32_to_cpu(dinfo->NextEntryOffset);
3379 d_info->name = dinfo->FileName;
3380 d_info->name_len = le32_to_cpu(dinfo->FileNameLength);
3383 case FILEID_BOTH_DIRECTORY_INFORMATION:
3385 struct file_id_both_directory_info *fibdinfo;
3387 fibdinfo = (struct file_id_both_directory_info *)d_info->rptr;
3388 d_info->rptr += le32_to_cpu(fibdinfo->NextEntryOffset);
3389 d_info->name = fibdinfo->FileName;
3390 d_info->name_len = le32_to_cpu(fibdinfo->FileNameLength);
3393 case SMB_FIND_FILE_POSIX_INFO:
3395 struct smb2_posix_info *posix_info;
3397 posix_info = (struct smb2_posix_info *)d_info->rptr;
3398 d_info->rptr += le32_to_cpu(posix_info->NextEntryOffset);
3399 d_info->name = posix_info->name;
3400 d_info->name_len = le32_to_cpu(posix_info->name_len);
3409 * smb2_populate_readdir_entry() - encode directory entry in smb2 response
3411 * @conn: connection instance
3412 * @info_level: smb information level
3413 * @d_info: structure included variables for query dir
3414 * @ksmbd_kstat: ksmbd wrapper of dirent stat information
3416 * if directory has many entries, find first can't read it fully.
3417 * find next might be called multiple times to read remaining dir entries
3419 * Return: 0 on success, otherwise error
3421 static int smb2_populate_readdir_entry(struct ksmbd_conn *conn, int info_level,
3422 struct ksmbd_dir_info *d_info,
3423 struct ksmbd_kstat *ksmbd_kstat)
3425 int next_entry_offset = 0;
3429 int struct_sz, rc = 0;
3431 conv_name = ksmbd_convert_dir_info_name(d_info,
3437 /* Somehow the name has only terminating NULL bytes */
3440 goto free_conv_name;
3443 struct_sz = readdir_info_level_struct_sz(info_level) + conv_len;
3444 next_entry_offset = ALIGN(struct_sz, KSMBD_DIR_INFO_ALIGNMENT);
3445 d_info->last_entry_off_align = next_entry_offset - struct_sz;
3447 if (next_entry_offset > d_info->out_buf_len) {
3448 d_info->out_buf_len = 0;
3450 goto free_conv_name;
3453 kstat = d_info->wptr;
3454 if (info_level != FILE_NAMES_INFORMATION)
3455 kstat = ksmbd_vfs_init_kstat(&d_info->wptr, ksmbd_kstat);
3457 switch (info_level) {
3458 case FILE_FULL_DIRECTORY_INFORMATION:
3460 struct file_full_directory_info *ffdinfo;
3462 ffdinfo = (struct file_full_directory_info *)kstat;
3463 ffdinfo->FileNameLength = cpu_to_le32(conv_len);
3465 smb2_get_reparse_tag_special_file(ksmbd_kstat->kstat->mode);
3466 if (ffdinfo->EaSize)
3467 ffdinfo->ExtFileAttributes = FILE_ATTRIBUTE_REPARSE_POINT_LE;
3468 if (d_info->hide_dot_file && d_info->name[0] == '.')
3469 ffdinfo->ExtFileAttributes |= FILE_ATTRIBUTE_HIDDEN_LE;
3470 memcpy(ffdinfo->FileName, conv_name, conv_len);
3471 ffdinfo->NextEntryOffset = cpu_to_le32(next_entry_offset);
3474 case FILE_BOTH_DIRECTORY_INFORMATION:
3476 struct file_both_directory_info *fbdinfo;
3478 fbdinfo = (struct file_both_directory_info *)kstat;
3479 fbdinfo->FileNameLength = cpu_to_le32(conv_len);
3481 smb2_get_reparse_tag_special_file(ksmbd_kstat->kstat->mode);
3482 if (fbdinfo->EaSize)
3483 fbdinfo->ExtFileAttributes = FILE_ATTRIBUTE_REPARSE_POINT_LE;
3484 fbdinfo->ShortNameLength = 0;
3485 fbdinfo->Reserved = 0;
3486 if (d_info->hide_dot_file && d_info->name[0] == '.')
3487 fbdinfo->ExtFileAttributes |= FILE_ATTRIBUTE_HIDDEN_LE;
3488 memcpy(fbdinfo->FileName, conv_name, conv_len);
3489 fbdinfo->NextEntryOffset = cpu_to_le32(next_entry_offset);
3492 case FILE_DIRECTORY_INFORMATION:
3494 struct file_directory_info *fdinfo;
3496 fdinfo = (struct file_directory_info *)kstat;
3497 fdinfo->FileNameLength = cpu_to_le32(conv_len);
3498 if (d_info->hide_dot_file && d_info->name[0] == '.')
3499 fdinfo->ExtFileAttributes |= FILE_ATTRIBUTE_HIDDEN_LE;
3500 memcpy(fdinfo->FileName, conv_name, conv_len);
3501 fdinfo->NextEntryOffset = cpu_to_le32(next_entry_offset);
3504 case FILE_NAMES_INFORMATION:
3506 struct file_names_info *fninfo;
3508 fninfo = (struct file_names_info *)kstat;
3509 fninfo->FileNameLength = cpu_to_le32(conv_len);
3510 memcpy(fninfo->FileName, conv_name, conv_len);
3511 fninfo->NextEntryOffset = cpu_to_le32(next_entry_offset);
3514 case FILEID_FULL_DIRECTORY_INFORMATION:
3516 struct file_id_full_dir_info *dinfo;
3518 dinfo = (struct file_id_full_dir_info *)kstat;
3519 dinfo->FileNameLength = cpu_to_le32(conv_len);
3521 smb2_get_reparse_tag_special_file(ksmbd_kstat->kstat->mode);
3523 dinfo->ExtFileAttributes = FILE_ATTRIBUTE_REPARSE_POINT_LE;
3524 dinfo->Reserved = 0;
3525 dinfo->UniqueId = cpu_to_le64(ksmbd_kstat->kstat->ino);
3526 if (d_info->hide_dot_file && d_info->name[0] == '.')
3527 dinfo->ExtFileAttributes |= FILE_ATTRIBUTE_HIDDEN_LE;
3528 memcpy(dinfo->FileName, conv_name, conv_len);
3529 dinfo->NextEntryOffset = cpu_to_le32(next_entry_offset);
3532 case FILEID_BOTH_DIRECTORY_INFORMATION:
3534 struct file_id_both_directory_info *fibdinfo;
3536 fibdinfo = (struct file_id_both_directory_info *)kstat;
3537 fibdinfo->FileNameLength = cpu_to_le32(conv_len);
3539 smb2_get_reparse_tag_special_file(ksmbd_kstat->kstat->mode);
3540 if (fibdinfo->EaSize)
3541 fibdinfo->ExtFileAttributes = FILE_ATTRIBUTE_REPARSE_POINT_LE;
3542 fibdinfo->UniqueId = cpu_to_le64(ksmbd_kstat->kstat->ino);
3543 fibdinfo->ShortNameLength = 0;
3544 fibdinfo->Reserved = 0;
3545 fibdinfo->Reserved2 = cpu_to_le16(0);
3546 if (d_info->hide_dot_file && d_info->name[0] == '.')
3547 fibdinfo->ExtFileAttributes |= FILE_ATTRIBUTE_HIDDEN_LE;
3548 memcpy(fibdinfo->FileName, conv_name, conv_len);
3549 fibdinfo->NextEntryOffset = cpu_to_le32(next_entry_offset);
3552 case SMB_FIND_FILE_POSIX_INFO:
3554 struct smb2_posix_info *posix_info;
3557 posix_info = (struct smb2_posix_info *)kstat;
3558 posix_info->Ignored = 0;
3559 posix_info->CreationTime = cpu_to_le64(ksmbd_kstat->create_time);
3560 time = ksmbd_UnixTimeToNT(ksmbd_kstat->kstat->ctime);
3561 posix_info->ChangeTime = cpu_to_le64(time);
3562 time = ksmbd_UnixTimeToNT(ksmbd_kstat->kstat->atime);
3563 posix_info->LastAccessTime = cpu_to_le64(time);
3564 time = ksmbd_UnixTimeToNT(ksmbd_kstat->kstat->mtime);
3565 posix_info->LastWriteTime = cpu_to_le64(time);
3566 posix_info->EndOfFile = cpu_to_le64(ksmbd_kstat->kstat->size);
3567 posix_info->AllocationSize = cpu_to_le64(ksmbd_kstat->kstat->blocks << 9);
3568 posix_info->DeviceId = cpu_to_le32(ksmbd_kstat->kstat->rdev);
3569 posix_info->HardLinks = cpu_to_le32(ksmbd_kstat->kstat->nlink);
3570 posix_info->Mode = cpu_to_le32(ksmbd_kstat->kstat->mode & 0777);
3571 posix_info->Inode = cpu_to_le64(ksmbd_kstat->kstat->ino);
3572 posix_info->DosAttributes =
3573 S_ISDIR(ksmbd_kstat->kstat->mode) ?
3574 FILE_ATTRIBUTE_DIRECTORY_LE : FILE_ATTRIBUTE_ARCHIVE_LE;
3575 if (d_info->hide_dot_file && d_info->name[0] == '.')
3576 posix_info->DosAttributes |= FILE_ATTRIBUTE_HIDDEN_LE;
3578 * SidBuffer(32) contain two sids(Domain sid(16), UNIX group sid(16)).
3579 * UNIX sid(16) = revision(1) + num_subauth(1) + authority(6) +
3580 * sub_auth(4 * 1(num_subauth)) + RID(4).
3582 id_to_sid(from_kuid_munged(&init_user_ns, ksmbd_kstat->kstat->uid),
3583 SIDUNIX_USER, (struct smb_sid *)&posix_info->SidBuffer[0]);
3584 id_to_sid(from_kgid_munged(&init_user_ns, ksmbd_kstat->kstat->gid),
3585 SIDUNIX_GROUP, (struct smb_sid *)&posix_info->SidBuffer[16]);
3586 memcpy(posix_info->name, conv_name, conv_len);
3587 posix_info->name_len = cpu_to_le32(conv_len);
3588 posix_info->NextEntryOffset = cpu_to_le32(next_entry_offset);
3592 } /* switch (info_level) */
3594 d_info->last_entry_offset = d_info->data_count;
3595 d_info->data_count += next_entry_offset;
3596 d_info->out_buf_len -= next_entry_offset;
3597 d_info->wptr += next_entry_offset;
3600 "info_level : %d, buf_len :%d, next_offset : %d, data_count : %d\n",
3601 info_level, d_info->out_buf_len,
3602 next_entry_offset, d_info->data_count);
3609 struct smb2_query_dir_private {
3610 struct ksmbd_work *work;
3611 char *search_pattern;
3612 struct ksmbd_file *dir_fp;
3614 struct ksmbd_dir_info *d_info;
3618 static void lock_dir(struct ksmbd_file *dir_fp)
3620 struct dentry *dir = dir_fp->filp->f_path.dentry;
3622 inode_lock_nested(d_inode(dir), I_MUTEX_PARENT);
3625 static void unlock_dir(struct ksmbd_file *dir_fp)
3627 struct dentry *dir = dir_fp->filp->f_path.dentry;
3629 inode_unlock(d_inode(dir));
3632 static int process_query_dir_entries(struct smb2_query_dir_private *priv)
3634 struct user_namespace *user_ns = file_mnt_user_ns(priv->dir_fp->filp);
3636 struct ksmbd_kstat ksmbd_kstat;
3640 for (i = 0; i < priv->d_info->num_entry; i++) {
3641 struct dentry *dent;
3643 if (dentry_name(priv->d_info, priv->info_level))
3646 lock_dir(priv->dir_fp);
3647 dent = lookup_one(user_ns, priv->d_info->name,
3648 priv->dir_fp->filp->f_path.dentry,
3649 priv->d_info->name_len);
3650 unlock_dir(priv->dir_fp);
3653 ksmbd_debug(SMB, "Cannot lookup `%s' [%ld]\n",
3658 if (unlikely(d_is_negative(dent))) {
3660 ksmbd_debug(SMB, "Negative dentry `%s'\n",
3661 priv->d_info->name);
3665 ksmbd_kstat.kstat = &kstat;
3666 if (priv->info_level != FILE_NAMES_INFORMATION)
3667 ksmbd_vfs_fill_dentry_attrs(priv->work,
3672 rc = smb2_populate_readdir_entry(priv->work->conn,
3683 static int reserve_populate_dentry(struct ksmbd_dir_info *d_info,
3688 int next_entry_offset;
3690 struct_sz = readdir_info_level_struct_sz(info_level);
3691 if (struct_sz == -EOPNOTSUPP)
3694 conv_len = (d_info->name_len + 1) * 2;
3695 next_entry_offset = ALIGN(struct_sz + conv_len,
3696 KSMBD_DIR_INFO_ALIGNMENT);
3698 if (next_entry_offset > d_info->out_buf_len) {
3699 d_info->out_buf_len = 0;
3703 switch (info_level) {
3704 case FILE_FULL_DIRECTORY_INFORMATION:
3706 struct file_full_directory_info *ffdinfo;
3708 ffdinfo = (struct file_full_directory_info *)d_info->wptr;
3709 memcpy(ffdinfo->FileName, d_info->name, d_info->name_len);
3710 ffdinfo->FileName[d_info->name_len] = 0x00;
3711 ffdinfo->FileNameLength = cpu_to_le32(d_info->name_len);
3712 ffdinfo->NextEntryOffset = cpu_to_le32(next_entry_offset);
3715 case FILE_BOTH_DIRECTORY_INFORMATION:
3717 struct file_both_directory_info *fbdinfo;
3719 fbdinfo = (struct file_both_directory_info *)d_info->wptr;
3720 memcpy(fbdinfo->FileName, d_info->name, d_info->name_len);
3721 fbdinfo->FileName[d_info->name_len] = 0x00;
3722 fbdinfo->FileNameLength = cpu_to_le32(d_info->name_len);
3723 fbdinfo->NextEntryOffset = cpu_to_le32(next_entry_offset);
3726 case FILE_DIRECTORY_INFORMATION:
3728 struct file_directory_info *fdinfo;
3730 fdinfo = (struct file_directory_info *)d_info->wptr;
3731 memcpy(fdinfo->FileName, d_info->name, d_info->name_len);
3732 fdinfo->FileName[d_info->name_len] = 0x00;
3733 fdinfo->FileNameLength = cpu_to_le32(d_info->name_len);
3734 fdinfo->NextEntryOffset = cpu_to_le32(next_entry_offset);
3737 case FILE_NAMES_INFORMATION:
3739 struct file_names_info *fninfo;
3741 fninfo = (struct file_names_info *)d_info->wptr;
3742 memcpy(fninfo->FileName, d_info->name, d_info->name_len);
3743 fninfo->FileName[d_info->name_len] = 0x00;
3744 fninfo->FileNameLength = cpu_to_le32(d_info->name_len);
3745 fninfo->NextEntryOffset = cpu_to_le32(next_entry_offset);
3748 case FILEID_FULL_DIRECTORY_INFORMATION:
3750 struct file_id_full_dir_info *dinfo;
3752 dinfo = (struct file_id_full_dir_info *)d_info->wptr;
3753 memcpy(dinfo->FileName, d_info->name, d_info->name_len);
3754 dinfo->FileName[d_info->name_len] = 0x00;
3755 dinfo->FileNameLength = cpu_to_le32(d_info->name_len);
3756 dinfo->NextEntryOffset = cpu_to_le32(next_entry_offset);
3759 case FILEID_BOTH_DIRECTORY_INFORMATION:
3761 struct file_id_both_directory_info *fibdinfo;
3763 fibdinfo = (struct file_id_both_directory_info *)d_info->wptr;
3764 memcpy(fibdinfo->FileName, d_info->name, d_info->name_len);
3765 fibdinfo->FileName[d_info->name_len] = 0x00;
3766 fibdinfo->FileNameLength = cpu_to_le32(d_info->name_len);
3767 fibdinfo->NextEntryOffset = cpu_to_le32(next_entry_offset);
3770 case SMB_FIND_FILE_POSIX_INFO:
3772 struct smb2_posix_info *posix_info;
3774 posix_info = (struct smb2_posix_info *)d_info->wptr;
3775 memcpy(posix_info->name, d_info->name, d_info->name_len);
3776 posix_info->name[d_info->name_len] = 0x00;
3777 posix_info->name_len = cpu_to_le32(d_info->name_len);
3778 posix_info->NextEntryOffset =
3779 cpu_to_le32(next_entry_offset);
3782 } /* switch (info_level) */
3784 d_info->num_entry++;
3785 d_info->out_buf_len -= next_entry_offset;
3786 d_info->wptr += next_entry_offset;
3790 static bool __query_dir(struct dir_context *ctx, const char *name, int namlen,
3791 loff_t offset, u64 ino, unsigned int d_type)
3793 struct ksmbd_readdir_data *buf;
3794 struct smb2_query_dir_private *priv;
3795 struct ksmbd_dir_info *d_info;
3798 buf = container_of(ctx, struct ksmbd_readdir_data, ctx);
3799 priv = buf->private;
3800 d_info = priv->d_info;
3802 /* dot and dotdot entries are already reserved */
3803 if (!strcmp(".", name) || !strcmp("..", name))
3805 if (ksmbd_share_veto_filename(priv->work->tcon->share_conf, name))
3807 if (!match_pattern(name, namlen, priv->search_pattern))
3810 d_info->name = name;
3811 d_info->name_len = namlen;
3812 rc = reserve_populate_dentry(d_info, priv->info_level);
3815 if (d_info->flags & SMB2_RETURN_SINGLE_ENTRY)
3816 d_info->out_buf_len = 0;
3820 static int verify_info_level(int info_level)
3822 switch (info_level) {
3823 case FILE_FULL_DIRECTORY_INFORMATION:
3824 case FILE_BOTH_DIRECTORY_INFORMATION:
3825 case FILE_DIRECTORY_INFORMATION:
3826 case FILE_NAMES_INFORMATION:
3827 case FILEID_FULL_DIRECTORY_INFORMATION:
3828 case FILEID_BOTH_DIRECTORY_INFORMATION:
3829 case SMB_FIND_FILE_POSIX_INFO:
3838 static int smb2_resp_buf_len(struct ksmbd_work *work, unsigned short hdr2_len)
3842 free_len = (int)(work->response_sz -
3843 (get_rfc1002_len(work->response_buf) + 4)) - hdr2_len;
3847 static int smb2_calc_max_out_buf_len(struct ksmbd_work *work,
3848 unsigned short hdr2_len,
3849 unsigned int out_buf_len)
3853 if (out_buf_len > work->conn->vals->max_trans_size)
3856 free_len = smb2_resp_buf_len(work, hdr2_len);
3860 return min_t(int, out_buf_len, free_len);
3863 int smb2_query_dir(struct ksmbd_work *work)
3865 struct ksmbd_conn *conn = work->conn;
3866 struct smb2_query_directory_req *req;
3867 struct smb2_query_directory_rsp *rsp;
3868 struct ksmbd_share_config *share = work->tcon->share_conf;
3869 struct ksmbd_file *dir_fp = NULL;
3870 struct ksmbd_dir_info d_info;
3872 char *srch_ptr = NULL;
3873 unsigned char srch_flag;
3875 struct smb2_query_dir_private query_dir_private = {NULL, };
3877 WORK_BUFFERS(work, req, rsp);
3879 if (ksmbd_override_fsids(work)) {
3880 rsp->hdr.Status = STATUS_NO_MEMORY;
3881 smb2_set_err_rsp(work);
3885 rc = verify_info_level(req->FileInformationClass);
3891 dir_fp = ksmbd_lookup_fd_slow(work, req->VolatileFileId, req->PersistentFileId);
3897 if (!(dir_fp->daccess & FILE_LIST_DIRECTORY_LE) ||
3898 inode_permission(file_mnt_user_ns(dir_fp->filp),
3899 file_inode(dir_fp->filp),
3900 MAY_READ | MAY_EXEC)) {
3901 pr_err("no right to enumerate directory (%pD)\n", dir_fp->filp);
3906 if (!S_ISDIR(file_inode(dir_fp->filp)->i_mode)) {
3907 pr_err("can't do query dir for a file\n");
3912 srch_flag = req->Flags;
3913 srch_ptr = smb_strndup_from_utf16(req->Buffer,
3914 le16_to_cpu(req->FileNameLength), 1,
3916 if (IS_ERR(srch_ptr)) {
3917 ksmbd_debug(SMB, "Search Pattern not found\n");
3921 ksmbd_debug(SMB, "Search pattern is %s\n", srch_ptr);
3924 if (srch_flag & SMB2_REOPEN || srch_flag & SMB2_RESTART_SCANS) {
3925 ksmbd_debug(SMB, "Restart directory scan\n");
3926 generic_file_llseek(dir_fp->filp, 0, SEEK_SET);
3929 memset(&d_info, 0, sizeof(struct ksmbd_dir_info));
3930 d_info.wptr = (char *)rsp->Buffer;
3931 d_info.rptr = (char *)rsp->Buffer;
3932 d_info.out_buf_len =
3933 smb2_calc_max_out_buf_len(work, 8,
3934 le32_to_cpu(req->OutputBufferLength));
3935 if (d_info.out_buf_len < 0) {
3939 d_info.flags = srch_flag;
3942 * reserve dot and dotdot entries in head of buffer
3945 rc = ksmbd_populate_dot_dotdot_entries(work, req->FileInformationClass,
3946 dir_fp, &d_info, srch_ptr,
3947 smb2_populate_readdir_entry);
3953 if (test_share_config_flag(share, KSMBD_SHARE_FLAG_HIDE_DOT_FILES))
3954 d_info.hide_dot_file = true;
3956 buffer_sz = d_info.out_buf_len;
3957 d_info.rptr = d_info.wptr;
3958 query_dir_private.work = work;
3959 query_dir_private.search_pattern = srch_ptr;
3960 query_dir_private.dir_fp = dir_fp;
3961 query_dir_private.d_info = &d_info;
3962 query_dir_private.info_level = req->FileInformationClass;
3963 dir_fp->readdir_data.private = &query_dir_private;
3964 set_ctx_actor(&dir_fp->readdir_data.ctx, __query_dir);
3966 rc = iterate_dir(dir_fp->filp, &dir_fp->readdir_data.ctx);
3968 * req->OutputBufferLength is too small to contain even one entry.
3969 * In this case, it immediately returns OutputBufferLength 0 to client.
3971 if (!d_info.out_buf_len && !d_info.num_entry)
3973 if (rc > 0 || rc == -ENOSPC)
3978 d_info.wptr = d_info.rptr;
3979 d_info.out_buf_len = buffer_sz;
3980 rc = process_query_dir_entries(&query_dir_private);
3984 if (!d_info.data_count && d_info.out_buf_len >= 0) {
3985 if (srch_flag & SMB2_RETURN_SINGLE_ENTRY && !is_asterisk(srch_ptr)) {
3986 rsp->hdr.Status = STATUS_NO_SUCH_FILE;
3988 dir_fp->dot_dotdot[0] = dir_fp->dot_dotdot[1] = 0;
3989 rsp->hdr.Status = STATUS_NO_MORE_FILES;
3991 rsp->StructureSize = cpu_to_le16(9);
3992 rsp->OutputBufferOffset = cpu_to_le16(0);
3993 rsp->OutputBufferLength = cpu_to_le32(0);
3995 inc_rfc1001_len(work->response_buf, 9);
3998 ((struct file_directory_info *)
3999 ((char *)rsp->Buffer + d_info.last_entry_offset))
4000 ->NextEntryOffset = 0;
4001 if (d_info.data_count >= d_info.last_entry_off_align)
4002 d_info.data_count -= d_info.last_entry_off_align;
4004 rsp->StructureSize = cpu_to_le16(9);
4005 rsp->OutputBufferOffset = cpu_to_le16(72);
4006 rsp->OutputBufferLength = cpu_to_le32(d_info.data_count);
4007 inc_rfc1001_len(work->response_buf, 8 + d_info.data_count);
4011 ksmbd_fd_put(work, dir_fp);
4012 ksmbd_revert_fsids(work);
4016 pr_err("error while processing smb2 query dir rc = %d\n", rc);
4021 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
4022 else if (rc == -EACCES)
4023 rsp->hdr.Status = STATUS_ACCESS_DENIED;
4024 else if (rc == -ENOENT)
4025 rsp->hdr.Status = STATUS_NO_SUCH_FILE;
4026 else if (rc == -EBADF)
4027 rsp->hdr.Status = STATUS_FILE_CLOSED;
4028 else if (rc == -ENOMEM)
4029 rsp->hdr.Status = STATUS_NO_MEMORY;
4030 else if (rc == -EFAULT)
4031 rsp->hdr.Status = STATUS_INVALID_INFO_CLASS;
4032 else if (rc == -EIO)
4033 rsp->hdr.Status = STATUS_FILE_CORRUPT_ERROR;
4034 if (!rsp->hdr.Status)
4035 rsp->hdr.Status = STATUS_UNEXPECTED_IO_ERROR;
4037 smb2_set_err_rsp(work);
4038 ksmbd_fd_put(work, dir_fp);
4039 ksmbd_revert_fsids(work);
4044 * buffer_check_err() - helper function to check buffer errors
4045 * @reqOutputBufferLength: max buffer length expected in command response
4046 * @rsp: query info response buffer contains output buffer length
4047 * @rsp_org: base response buffer pointer in case of chained response
4048 * @infoclass_size: query info class response buffer size
4050 * Return: 0 on success, otherwise error
4052 static int buffer_check_err(int reqOutputBufferLength,
4053 struct smb2_query_info_rsp *rsp,
4054 void *rsp_org, int infoclass_size)
4056 if (reqOutputBufferLength < le32_to_cpu(rsp->OutputBufferLength)) {
4057 if (reqOutputBufferLength < infoclass_size) {
4058 pr_err("Invalid Buffer Size Requested\n");
4059 rsp->hdr.Status = STATUS_INFO_LENGTH_MISMATCH;
4060 *(__be32 *)rsp_org = cpu_to_be32(sizeof(struct smb2_hdr));
4064 ksmbd_debug(SMB, "Buffer Overflow\n");
4065 rsp->hdr.Status = STATUS_BUFFER_OVERFLOW;
4066 *(__be32 *)rsp_org = cpu_to_be32(sizeof(struct smb2_hdr) +
4067 reqOutputBufferLength);
4068 rsp->OutputBufferLength = cpu_to_le32(reqOutputBufferLength);
4073 static void get_standard_info_pipe(struct smb2_query_info_rsp *rsp,
4076 struct smb2_file_standard_info *sinfo;
4078 sinfo = (struct smb2_file_standard_info *)rsp->Buffer;
4080 sinfo->AllocationSize = cpu_to_le64(4096);
4081 sinfo->EndOfFile = cpu_to_le64(0);
4082 sinfo->NumberOfLinks = cpu_to_le32(1);
4083 sinfo->DeletePending = 1;
4084 sinfo->Directory = 0;
4085 rsp->OutputBufferLength =
4086 cpu_to_le32(sizeof(struct smb2_file_standard_info));
4087 inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_standard_info));
4090 static void get_internal_info_pipe(struct smb2_query_info_rsp *rsp, u64 num,
4093 struct smb2_file_internal_info *file_info;
4095 file_info = (struct smb2_file_internal_info *)rsp->Buffer;
4097 /* any unique number */
4098 file_info->IndexNumber = cpu_to_le64(num | (1ULL << 63));
4099 rsp->OutputBufferLength =
4100 cpu_to_le32(sizeof(struct smb2_file_internal_info));
4101 inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_internal_info));
4104 static int smb2_get_info_file_pipe(struct ksmbd_session *sess,
4105 struct smb2_query_info_req *req,
4106 struct smb2_query_info_rsp *rsp,
4113 * Windows can sometime send query file info request on
4114 * pipe without opening it, checking error condition here
4116 id = req->VolatileFileId;
4117 if (!ksmbd_session_rpc_method(sess, id))
4120 ksmbd_debug(SMB, "FileInfoClass %u, FileId 0x%llx\n",
4121 req->FileInfoClass, req->VolatileFileId);
4123 switch (req->FileInfoClass) {
4124 case FILE_STANDARD_INFORMATION:
4125 get_standard_info_pipe(rsp, rsp_org);
4126 rc = buffer_check_err(le32_to_cpu(req->OutputBufferLength),
4128 FILE_STANDARD_INFORMATION_SIZE);
4130 case FILE_INTERNAL_INFORMATION:
4131 get_internal_info_pipe(rsp, id, rsp_org);
4132 rc = buffer_check_err(le32_to_cpu(req->OutputBufferLength),
4134 FILE_INTERNAL_INFORMATION_SIZE);
4137 ksmbd_debug(SMB, "smb2_info_file_pipe for %u not supported\n",
4138 req->FileInfoClass);
4145 * smb2_get_ea() - handler for smb2 get extended attribute command
4146 * @work: smb work containing query info command buffer
4147 * @fp: ksmbd_file pointer
4148 * @req: get extended attribute request
4149 * @rsp: response buffer pointer
4150 * @rsp_org: base response buffer pointer in case of chained response
4152 * Return: 0 on success, otherwise error
4154 static int smb2_get_ea(struct ksmbd_work *work, struct ksmbd_file *fp,
4155 struct smb2_query_info_req *req,
4156 struct smb2_query_info_rsp *rsp, void *rsp_org)
4158 struct smb2_ea_info *eainfo, *prev_eainfo;
4159 char *name, *ptr, *xattr_list = NULL, *buf;
4160 int rc, name_len, value_len, xattr_list_len, idx;
4161 ssize_t buf_free_len, alignment_bytes, next_offset, rsp_data_cnt = 0;
4162 struct smb2_ea_info_req *ea_req = NULL;
4163 const struct path *path;
4164 struct user_namespace *user_ns = file_mnt_user_ns(fp->filp);
4166 if (!(fp->daccess & FILE_READ_EA_LE)) {
4167 pr_err("Not permitted to read ext attr : 0x%x\n",
4172 path = &fp->filp->f_path;
4173 /* single EA entry is requested with given user.* name */
4174 if (req->InputBufferLength) {
4175 if (le32_to_cpu(req->InputBufferLength) <
4176 sizeof(struct smb2_ea_info_req))
4179 ea_req = (struct smb2_ea_info_req *)req->Buffer;
4181 /* need to send all EAs, if no specific EA is requested*/
4182 if (le32_to_cpu(req->Flags) & SL_RETURN_SINGLE_ENTRY)
4184 "All EAs are requested but need to send single EA entry in rsp flags 0x%x\n",
4185 le32_to_cpu(req->Flags));
4189 smb2_calc_max_out_buf_len(work, 8,
4190 le32_to_cpu(req->OutputBufferLength));
4191 if (buf_free_len < 0)
4194 rc = ksmbd_vfs_listxattr(path->dentry, &xattr_list);
4196 rsp->hdr.Status = STATUS_INVALID_HANDLE;
4198 } else if (!rc) { /* there is no EA in the file */
4199 ksmbd_debug(SMB, "no ea data in the file\n");
4202 xattr_list_len = rc;
4204 ptr = (char *)rsp->Buffer;
4205 eainfo = (struct smb2_ea_info *)ptr;
4206 prev_eainfo = eainfo;
4209 while (idx < xattr_list_len) {
4210 name = xattr_list + idx;
4211 name_len = strlen(name);
4213 ksmbd_debug(SMB, "%s, len %d\n", name, name_len);
4214 idx += name_len + 1;
4217 * CIFS does not support EA other than user.* namespace,
4218 * still keep the framework generic, to list other attrs
4221 if (strncmp(name, XATTR_USER_PREFIX, XATTR_USER_PREFIX_LEN))
4224 if (!strncmp(&name[XATTR_USER_PREFIX_LEN], STREAM_PREFIX,
4228 if (req->InputBufferLength &&
4229 strncmp(&name[XATTR_USER_PREFIX_LEN], ea_req->name,
4230 ea_req->EaNameLength))
4233 if (!strncmp(&name[XATTR_USER_PREFIX_LEN],
4234 DOS_ATTRIBUTE_PREFIX, DOS_ATTRIBUTE_PREFIX_LEN))
4237 if (!strncmp(name, XATTR_USER_PREFIX, XATTR_USER_PREFIX_LEN))
4238 name_len -= XATTR_USER_PREFIX_LEN;
4240 ptr = (char *)(&eainfo->name + name_len + 1);
4241 buf_free_len -= (offsetof(struct smb2_ea_info, name) +
4243 /* bailout if xattr can't fit in buf_free_len */
4244 value_len = ksmbd_vfs_getxattr(user_ns, path->dentry,
4246 if (value_len <= 0) {
4248 rsp->hdr.Status = STATUS_INVALID_HANDLE;
4252 buf_free_len -= value_len;
4253 if (buf_free_len < 0) {
4258 memcpy(ptr, buf, value_len);
4263 eainfo->EaNameLength = name_len;
4265 if (!strncmp(name, XATTR_USER_PREFIX, XATTR_USER_PREFIX_LEN))
4266 memcpy(eainfo->name, &name[XATTR_USER_PREFIX_LEN],
4269 memcpy(eainfo->name, name, name_len);
4271 eainfo->name[name_len] = '\0';
4272 eainfo->EaValueLength = cpu_to_le16(value_len);
4273 next_offset = offsetof(struct smb2_ea_info, name) +
4274 name_len + 1 + value_len;
4276 /* align next xattr entry at 4 byte bundary */
4277 alignment_bytes = ((next_offset + 3) & ~3) - next_offset;
4278 if (alignment_bytes) {
4279 memset(ptr, '\0', alignment_bytes);
4280 ptr += alignment_bytes;
4281 next_offset += alignment_bytes;
4282 buf_free_len -= alignment_bytes;
4284 eainfo->NextEntryOffset = cpu_to_le32(next_offset);
4285 prev_eainfo = eainfo;
4286 eainfo = (struct smb2_ea_info *)ptr;
4287 rsp_data_cnt += next_offset;
4289 if (req->InputBufferLength) {
4290 ksmbd_debug(SMB, "single entry requested\n");
4295 /* no more ea entries */
4296 prev_eainfo->NextEntryOffset = 0;
4299 if (rsp_data_cnt == 0)
4300 rsp->hdr.Status = STATUS_NO_EAS_ON_FILE;
4301 rsp->OutputBufferLength = cpu_to_le32(rsp_data_cnt);
4302 inc_rfc1001_len(rsp_org, rsp_data_cnt);
4308 static void get_file_access_info(struct smb2_query_info_rsp *rsp,
4309 struct ksmbd_file *fp, void *rsp_org)
4311 struct smb2_file_access_info *file_info;
4313 file_info = (struct smb2_file_access_info *)rsp->Buffer;
4314 file_info->AccessFlags = fp->daccess;
4315 rsp->OutputBufferLength =
4316 cpu_to_le32(sizeof(struct smb2_file_access_info));
4317 inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_access_info));
4320 static int get_file_basic_info(struct smb2_query_info_rsp *rsp,
4321 struct ksmbd_file *fp, void *rsp_org)
4323 struct smb2_file_basic_info *basic_info;
4327 if (!(fp->daccess & FILE_READ_ATTRIBUTES_LE)) {
4328 pr_err("no right to read the attributes : 0x%x\n",
4333 basic_info = (struct smb2_file_basic_info *)rsp->Buffer;
4334 generic_fillattr(file_mnt_user_ns(fp->filp), file_inode(fp->filp),
4336 basic_info->CreationTime = cpu_to_le64(fp->create_time);
4337 time = ksmbd_UnixTimeToNT(stat.atime);
4338 basic_info->LastAccessTime = cpu_to_le64(time);
4339 time = ksmbd_UnixTimeToNT(stat.mtime);
4340 basic_info->LastWriteTime = cpu_to_le64(time);
4341 time = ksmbd_UnixTimeToNT(stat.ctime);
4342 basic_info->ChangeTime = cpu_to_le64(time);
4343 basic_info->Attributes = fp->f_ci->m_fattr;
4344 basic_info->Pad1 = 0;
4345 rsp->OutputBufferLength =
4346 cpu_to_le32(sizeof(struct smb2_file_basic_info));
4347 inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_basic_info));
4351 static unsigned long long get_allocation_size(struct inode *inode,
4354 unsigned long long alloc_size = 0;
4356 if (!S_ISDIR(stat->mode)) {
4357 if ((inode->i_blocks << 9) <= stat->size)
4358 alloc_size = stat->size;
4360 alloc_size = inode->i_blocks << 9;
4366 static void get_file_standard_info(struct smb2_query_info_rsp *rsp,
4367 struct ksmbd_file *fp, void *rsp_org)
4369 struct smb2_file_standard_info *sinfo;
4370 unsigned int delete_pending;
4371 struct inode *inode;
4374 inode = file_inode(fp->filp);
4375 generic_fillattr(file_mnt_user_ns(fp->filp), inode, &stat);
4377 sinfo = (struct smb2_file_standard_info *)rsp->Buffer;
4378 delete_pending = ksmbd_inode_pending_delete(fp);
4380 sinfo->AllocationSize = cpu_to_le64(get_allocation_size(inode, &stat));
4381 sinfo->EndOfFile = S_ISDIR(stat.mode) ? 0 : cpu_to_le64(stat.size);
4382 sinfo->NumberOfLinks = cpu_to_le32(get_nlink(&stat) - delete_pending);
4383 sinfo->DeletePending = delete_pending;
4384 sinfo->Directory = S_ISDIR(stat.mode) ? 1 : 0;
4385 rsp->OutputBufferLength =
4386 cpu_to_le32(sizeof(struct smb2_file_standard_info));
4387 inc_rfc1001_len(rsp_org,
4388 sizeof(struct smb2_file_standard_info));
4391 static void get_file_alignment_info(struct smb2_query_info_rsp *rsp,
4394 struct smb2_file_alignment_info *file_info;
4396 file_info = (struct smb2_file_alignment_info *)rsp->Buffer;
4397 file_info->AlignmentRequirement = 0;
4398 rsp->OutputBufferLength =
4399 cpu_to_le32(sizeof(struct smb2_file_alignment_info));
4400 inc_rfc1001_len(rsp_org,
4401 sizeof(struct smb2_file_alignment_info));
4404 static int get_file_all_info(struct ksmbd_work *work,
4405 struct smb2_query_info_rsp *rsp,
4406 struct ksmbd_file *fp,
4409 struct ksmbd_conn *conn = work->conn;
4410 struct smb2_file_all_info *file_info;
4411 unsigned int delete_pending;
4412 struct inode *inode;
4418 if (!(fp->daccess & FILE_READ_ATTRIBUTES_LE)) {
4419 ksmbd_debug(SMB, "no right to read the attributes : 0x%x\n",
4424 filename = convert_to_nt_pathname(work->tcon->share_conf, &fp->filp->f_path);
4425 if (IS_ERR(filename))
4426 return PTR_ERR(filename);
4428 inode = file_inode(fp->filp);
4429 generic_fillattr(file_mnt_user_ns(fp->filp), inode, &stat);
4431 ksmbd_debug(SMB, "filename = %s\n", filename);
4432 delete_pending = ksmbd_inode_pending_delete(fp);
4433 file_info = (struct smb2_file_all_info *)rsp->Buffer;
4435 file_info->CreationTime = cpu_to_le64(fp->create_time);
4436 time = ksmbd_UnixTimeToNT(stat.atime);
4437 file_info->LastAccessTime = cpu_to_le64(time);
4438 time = ksmbd_UnixTimeToNT(stat.mtime);
4439 file_info->LastWriteTime = cpu_to_le64(time);
4440 time = ksmbd_UnixTimeToNT(stat.ctime);
4441 file_info->ChangeTime = cpu_to_le64(time);
4442 file_info->Attributes = fp->f_ci->m_fattr;
4443 file_info->Pad1 = 0;
4444 file_info->AllocationSize =
4445 cpu_to_le64(get_allocation_size(inode, &stat));
4446 file_info->EndOfFile = S_ISDIR(stat.mode) ? 0 : cpu_to_le64(stat.size);
4447 file_info->NumberOfLinks =
4448 cpu_to_le32(get_nlink(&stat) - delete_pending);
4449 file_info->DeletePending = delete_pending;
4450 file_info->Directory = S_ISDIR(stat.mode) ? 1 : 0;
4451 file_info->Pad2 = 0;
4452 file_info->IndexNumber = cpu_to_le64(stat.ino);
4453 file_info->EASize = 0;
4454 file_info->AccessFlags = fp->daccess;
4455 file_info->CurrentByteOffset = cpu_to_le64(fp->filp->f_pos);
4456 file_info->Mode = fp->coption;
4457 file_info->AlignmentRequirement = 0;
4458 conv_len = smbConvertToUTF16((__le16 *)file_info->FileName, filename,
4459 PATH_MAX, conn->local_nls, 0);
4461 file_info->FileNameLength = cpu_to_le32(conv_len);
4462 rsp->OutputBufferLength =
4463 cpu_to_le32(sizeof(struct smb2_file_all_info) + conv_len - 1);
4465 inc_rfc1001_len(rsp_org, le32_to_cpu(rsp->OutputBufferLength));
4469 static void get_file_alternate_info(struct ksmbd_work *work,
4470 struct smb2_query_info_rsp *rsp,
4471 struct ksmbd_file *fp,
4474 struct ksmbd_conn *conn = work->conn;
4475 struct smb2_file_alt_name_info *file_info;
4476 struct dentry *dentry = fp->filp->f_path.dentry;
4479 spin_lock(&dentry->d_lock);
4480 file_info = (struct smb2_file_alt_name_info *)rsp->Buffer;
4481 conv_len = ksmbd_extract_shortname(conn,
4482 dentry->d_name.name,
4483 file_info->FileName);
4484 spin_unlock(&dentry->d_lock);
4485 file_info->FileNameLength = cpu_to_le32(conv_len);
4486 rsp->OutputBufferLength =
4487 cpu_to_le32(sizeof(struct smb2_file_alt_name_info) + conv_len);
4488 inc_rfc1001_len(rsp_org, le32_to_cpu(rsp->OutputBufferLength));
4491 static void get_file_stream_info(struct ksmbd_work *work,
4492 struct smb2_query_info_rsp *rsp,
4493 struct ksmbd_file *fp,
4496 struct ksmbd_conn *conn = work->conn;
4497 struct smb2_file_stream_info *file_info;
4498 char *stream_name, *xattr_list = NULL, *stream_buf;
4500 const struct path *path = &fp->filp->f_path;
4501 ssize_t xattr_list_len;
4502 int nbytes = 0, streamlen, stream_name_len, next, idx = 0;
4504 struct smb2_query_info_req *req = ksmbd_req_buf_next(work);
4506 generic_fillattr(file_mnt_user_ns(fp->filp), file_inode(fp->filp),
4508 file_info = (struct smb2_file_stream_info *)rsp->Buffer;
4511 smb2_calc_max_out_buf_len(work, 8,
4512 le32_to_cpu(req->OutputBufferLength));
4513 if (buf_free_len < 0)
4516 xattr_list_len = ksmbd_vfs_listxattr(path->dentry, &xattr_list);
4517 if (xattr_list_len < 0) {
4519 } else if (!xattr_list_len) {
4520 ksmbd_debug(SMB, "empty xattr in the file\n");
4524 while (idx < xattr_list_len) {
4525 stream_name = xattr_list + idx;
4526 streamlen = strlen(stream_name);
4527 idx += streamlen + 1;
4529 ksmbd_debug(SMB, "%s, len %d\n", stream_name, streamlen);
4531 if (strncmp(&stream_name[XATTR_USER_PREFIX_LEN],
4532 STREAM_PREFIX, STREAM_PREFIX_LEN))
4535 stream_name_len = streamlen - (XATTR_USER_PREFIX_LEN +
4537 streamlen = stream_name_len;
4541 stream_buf = kmalloc(streamlen + 1, GFP_KERNEL);
4545 streamlen = snprintf(stream_buf, streamlen + 1,
4546 ":%s", &stream_name[XATTR_NAME_STREAM_LEN]);
4548 next = sizeof(struct smb2_file_stream_info) + streamlen * 2;
4549 if (next > buf_free_len) {
4554 file_info = (struct smb2_file_stream_info *)&rsp->Buffer[nbytes];
4555 streamlen = smbConvertToUTF16((__le16 *)file_info->StreamName,
4556 stream_buf, streamlen,
4557 conn->local_nls, 0);
4560 file_info->StreamNameLength = cpu_to_le32(streamlen);
4561 file_info->StreamSize = cpu_to_le64(stream_name_len);
4562 file_info->StreamAllocationSize = cpu_to_le64(stream_name_len);
4565 buf_free_len -= next;
4566 file_info->NextEntryOffset = cpu_to_le32(next);
4570 if (!S_ISDIR(stat.mode) &&
4571 buf_free_len >= sizeof(struct smb2_file_stream_info) + 7 * 2) {
4572 file_info = (struct smb2_file_stream_info *)
4573 &rsp->Buffer[nbytes];
4574 streamlen = smbConvertToUTF16((__le16 *)file_info->StreamName,
4575 "::$DATA", 7, conn->local_nls, 0);
4577 file_info->StreamNameLength = cpu_to_le32(streamlen);
4578 file_info->StreamSize = cpu_to_le64(stat.size);
4579 file_info->StreamAllocationSize = cpu_to_le64(stat.blocks << 9);
4580 nbytes += sizeof(struct smb2_file_stream_info) + streamlen;
4583 /* last entry offset should be 0 */
4584 file_info->NextEntryOffset = 0;
4587 rsp->OutputBufferLength = cpu_to_le32(nbytes);
4588 inc_rfc1001_len(rsp_org, nbytes);
4591 static void get_file_internal_info(struct smb2_query_info_rsp *rsp,
4592 struct ksmbd_file *fp, void *rsp_org)
4594 struct smb2_file_internal_info *file_info;
4597 generic_fillattr(file_mnt_user_ns(fp->filp), file_inode(fp->filp),
4599 file_info = (struct smb2_file_internal_info *)rsp->Buffer;
4600 file_info->IndexNumber = cpu_to_le64(stat.ino);
4601 rsp->OutputBufferLength =
4602 cpu_to_le32(sizeof(struct smb2_file_internal_info));
4603 inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_internal_info));
4606 static int get_file_network_open_info(struct smb2_query_info_rsp *rsp,
4607 struct ksmbd_file *fp, void *rsp_org)
4609 struct smb2_file_ntwrk_info *file_info;
4610 struct inode *inode;
4614 if (!(fp->daccess & FILE_READ_ATTRIBUTES_LE)) {
4615 pr_err("no right to read the attributes : 0x%x\n",
4620 file_info = (struct smb2_file_ntwrk_info *)rsp->Buffer;
4622 inode = file_inode(fp->filp);
4623 generic_fillattr(file_mnt_user_ns(fp->filp), inode, &stat);
4625 file_info->CreationTime = cpu_to_le64(fp->create_time);
4626 time = ksmbd_UnixTimeToNT(stat.atime);
4627 file_info->LastAccessTime = cpu_to_le64(time);
4628 time = ksmbd_UnixTimeToNT(stat.mtime);
4629 file_info->LastWriteTime = cpu_to_le64(time);
4630 time = ksmbd_UnixTimeToNT(stat.ctime);
4631 file_info->ChangeTime = cpu_to_le64(time);
4632 file_info->Attributes = fp->f_ci->m_fattr;
4633 file_info->AllocationSize =
4634 cpu_to_le64(get_allocation_size(inode, &stat));
4635 file_info->EndOfFile = S_ISDIR(stat.mode) ? 0 : cpu_to_le64(stat.size);
4636 file_info->Reserved = cpu_to_le32(0);
4637 rsp->OutputBufferLength =
4638 cpu_to_le32(sizeof(struct smb2_file_ntwrk_info));
4639 inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_ntwrk_info));
4643 static void get_file_ea_info(struct smb2_query_info_rsp *rsp, void *rsp_org)
4645 struct smb2_file_ea_info *file_info;
4647 file_info = (struct smb2_file_ea_info *)rsp->Buffer;
4648 file_info->EASize = 0;
4649 rsp->OutputBufferLength =
4650 cpu_to_le32(sizeof(struct smb2_file_ea_info));
4651 inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_ea_info));
4654 static void get_file_position_info(struct smb2_query_info_rsp *rsp,
4655 struct ksmbd_file *fp, void *rsp_org)
4657 struct smb2_file_pos_info *file_info;
4659 file_info = (struct smb2_file_pos_info *)rsp->Buffer;
4660 file_info->CurrentByteOffset = cpu_to_le64(fp->filp->f_pos);
4661 rsp->OutputBufferLength =
4662 cpu_to_le32(sizeof(struct smb2_file_pos_info));
4663 inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_pos_info));
4666 static void get_file_mode_info(struct smb2_query_info_rsp *rsp,
4667 struct ksmbd_file *fp, void *rsp_org)
4669 struct smb2_file_mode_info *file_info;
4671 file_info = (struct smb2_file_mode_info *)rsp->Buffer;
4672 file_info->Mode = fp->coption & FILE_MODE_INFO_MASK;
4673 rsp->OutputBufferLength =
4674 cpu_to_le32(sizeof(struct smb2_file_mode_info));
4675 inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_mode_info));
4678 static void get_file_compression_info(struct smb2_query_info_rsp *rsp,
4679 struct ksmbd_file *fp, void *rsp_org)
4681 struct smb2_file_comp_info *file_info;
4684 generic_fillattr(file_mnt_user_ns(fp->filp), file_inode(fp->filp),
4687 file_info = (struct smb2_file_comp_info *)rsp->Buffer;
4688 file_info->CompressedFileSize = cpu_to_le64(stat.blocks << 9);
4689 file_info->CompressionFormat = COMPRESSION_FORMAT_NONE;
4690 file_info->CompressionUnitShift = 0;
4691 file_info->ChunkShift = 0;
4692 file_info->ClusterShift = 0;
4693 memset(&file_info->Reserved[0], 0, 3);
4695 rsp->OutputBufferLength =
4696 cpu_to_le32(sizeof(struct smb2_file_comp_info));
4697 inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_comp_info));
4700 static int get_file_attribute_tag_info(struct smb2_query_info_rsp *rsp,
4701 struct ksmbd_file *fp, void *rsp_org)
4703 struct smb2_file_attr_tag_info *file_info;
4705 if (!(fp->daccess & FILE_READ_ATTRIBUTES_LE)) {
4706 pr_err("no right to read the attributes : 0x%x\n",
4711 file_info = (struct smb2_file_attr_tag_info *)rsp->Buffer;
4712 file_info->FileAttributes = fp->f_ci->m_fattr;
4713 file_info->ReparseTag = 0;
4714 rsp->OutputBufferLength =
4715 cpu_to_le32(sizeof(struct smb2_file_attr_tag_info));
4716 inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_attr_tag_info));
4720 static int find_file_posix_info(struct smb2_query_info_rsp *rsp,
4721 struct ksmbd_file *fp, void *rsp_org)
4723 struct smb311_posix_qinfo *file_info;
4724 struct inode *inode = file_inode(fp->filp);
4725 struct user_namespace *user_ns = file_mnt_user_ns(fp->filp);
4726 vfsuid_t vfsuid = i_uid_into_vfsuid(user_ns, inode);
4727 vfsgid_t vfsgid = i_gid_into_vfsgid(user_ns, inode);
4729 int out_buf_len = sizeof(struct smb311_posix_qinfo) + 32;
4731 file_info = (struct smb311_posix_qinfo *)rsp->Buffer;
4732 file_info->CreationTime = cpu_to_le64(fp->create_time);
4733 time = ksmbd_UnixTimeToNT(inode->i_atime);
4734 file_info->LastAccessTime = cpu_to_le64(time);
4735 time = ksmbd_UnixTimeToNT(inode->i_mtime);
4736 file_info->LastWriteTime = cpu_to_le64(time);
4737 time = ksmbd_UnixTimeToNT(inode->i_ctime);
4738 file_info->ChangeTime = cpu_to_le64(time);
4739 file_info->DosAttributes = fp->f_ci->m_fattr;
4740 file_info->Inode = cpu_to_le64(inode->i_ino);
4741 file_info->EndOfFile = cpu_to_le64(inode->i_size);
4742 file_info->AllocationSize = cpu_to_le64(inode->i_blocks << 9);
4743 file_info->HardLinks = cpu_to_le32(inode->i_nlink);
4744 file_info->Mode = cpu_to_le32(inode->i_mode & 0777);
4745 file_info->DeviceId = cpu_to_le32(inode->i_rdev);
4748 * Sids(32) contain two sids(Domain sid(16), UNIX group sid(16)).
4749 * UNIX sid(16) = revision(1) + num_subauth(1) + authority(6) +
4750 * sub_auth(4 * 1(num_subauth)) + RID(4).
4752 id_to_sid(from_kuid_munged(&init_user_ns, vfsuid_into_kuid(vfsuid)),
4753 SIDUNIX_USER, (struct smb_sid *)&file_info->Sids[0]);
4754 id_to_sid(from_kgid_munged(&init_user_ns, vfsgid_into_kgid(vfsgid)),
4755 SIDUNIX_GROUP, (struct smb_sid *)&file_info->Sids[16]);
4757 rsp->OutputBufferLength = cpu_to_le32(out_buf_len);
4758 inc_rfc1001_len(rsp_org, out_buf_len);
4762 static int smb2_get_info_file(struct ksmbd_work *work,
4763 struct smb2_query_info_req *req,
4764 struct smb2_query_info_rsp *rsp)
4766 struct ksmbd_file *fp;
4767 int fileinfoclass = 0;
4769 int file_infoclass_size;
4770 unsigned int id = KSMBD_NO_FID, pid = KSMBD_NO_FID;
4772 if (test_share_config_flag(work->tcon->share_conf,
4773 KSMBD_SHARE_FLAG_PIPE)) {
4774 /* smb2 info file called for pipe */
4775 return smb2_get_info_file_pipe(work->sess, req, rsp,
4776 work->response_buf);
4779 if (work->next_smb2_rcv_hdr_off) {
4780 if (!has_file_id(req->VolatileFileId)) {
4781 ksmbd_debug(SMB, "Compound request set FID = %llu\n",
4782 work->compound_fid);
4783 id = work->compound_fid;
4784 pid = work->compound_pfid;
4788 if (!has_file_id(id)) {
4789 id = req->VolatileFileId;
4790 pid = req->PersistentFileId;
4793 fp = ksmbd_lookup_fd_slow(work, id, pid);
4797 fileinfoclass = req->FileInfoClass;
4799 switch (fileinfoclass) {
4800 case FILE_ACCESS_INFORMATION:
4801 get_file_access_info(rsp, fp, work->response_buf);
4802 file_infoclass_size = FILE_ACCESS_INFORMATION_SIZE;
4805 case FILE_BASIC_INFORMATION:
4806 rc = get_file_basic_info(rsp, fp, work->response_buf);
4807 file_infoclass_size = FILE_BASIC_INFORMATION_SIZE;
4810 case FILE_STANDARD_INFORMATION:
4811 get_file_standard_info(rsp, fp, work->response_buf);
4812 file_infoclass_size = FILE_STANDARD_INFORMATION_SIZE;
4815 case FILE_ALIGNMENT_INFORMATION:
4816 get_file_alignment_info(rsp, work->response_buf);
4817 file_infoclass_size = FILE_ALIGNMENT_INFORMATION_SIZE;
4820 case FILE_ALL_INFORMATION:
4821 rc = get_file_all_info(work, rsp, fp, work->response_buf);
4822 file_infoclass_size = FILE_ALL_INFORMATION_SIZE;
4825 case FILE_ALTERNATE_NAME_INFORMATION:
4826 get_file_alternate_info(work, rsp, fp, work->response_buf);
4827 file_infoclass_size = FILE_ALTERNATE_NAME_INFORMATION_SIZE;
4830 case FILE_STREAM_INFORMATION:
4831 get_file_stream_info(work, rsp, fp, work->response_buf);
4832 file_infoclass_size = FILE_STREAM_INFORMATION_SIZE;
4835 case FILE_INTERNAL_INFORMATION:
4836 get_file_internal_info(rsp, fp, work->response_buf);
4837 file_infoclass_size = FILE_INTERNAL_INFORMATION_SIZE;
4840 case FILE_NETWORK_OPEN_INFORMATION:
4841 rc = get_file_network_open_info(rsp, fp, work->response_buf);
4842 file_infoclass_size = FILE_NETWORK_OPEN_INFORMATION_SIZE;
4845 case FILE_EA_INFORMATION:
4846 get_file_ea_info(rsp, work->response_buf);
4847 file_infoclass_size = FILE_EA_INFORMATION_SIZE;
4850 case FILE_FULL_EA_INFORMATION:
4851 rc = smb2_get_ea(work, fp, req, rsp, work->response_buf);
4852 file_infoclass_size = FILE_FULL_EA_INFORMATION_SIZE;
4855 case FILE_POSITION_INFORMATION:
4856 get_file_position_info(rsp, fp, work->response_buf);
4857 file_infoclass_size = FILE_POSITION_INFORMATION_SIZE;
4860 case FILE_MODE_INFORMATION:
4861 get_file_mode_info(rsp, fp, work->response_buf);
4862 file_infoclass_size = FILE_MODE_INFORMATION_SIZE;
4865 case FILE_COMPRESSION_INFORMATION:
4866 get_file_compression_info(rsp, fp, work->response_buf);
4867 file_infoclass_size = FILE_COMPRESSION_INFORMATION_SIZE;
4870 case FILE_ATTRIBUTE_TAG_INFORMATION:
4871 rc = get_file_attribute_tag_info(rsp, fp, work->response_buf);
4872 file_infoclass_size = FILE_ATTRIBUTE_TAG_INFORMATION_SIZE;
4874 case SMB_FIND_FILE_POSIX_INFO:
4875 if (!work->tcon->posix_extensions) {
4876 pr_err("client doesn't negotiate with SMB3.1.1 POSIX Extensions\n");
4879 file_infoclass_size = find_file_posix_info(rsp, fp,
4880 work->response_buf);
4884 ksmbd_debug(SMB, "fileinfoclass %d not supported yet\n",
4889 rc = buffer_check_err(le32_to_cpu(req->OutputBufferLength),
4890 rsp, work->response_buf,
4891 file_infoclass_size);
4892 ksmbd_fd_put(work, fp);
4896 static int smb2_get_info_filesystem(struct ksmbd_work *work,
4897 struct smb2_query_info_req *req,
4898 struct smb2_query_info_rsp *rsp)
4900 struct ksmbd_session *sess = work->sess;
4901 struct ksmbd_conn *conn = work->conn;
4902 struct ksmbd_share_config *share = work->tcon->share_conf;
4903 int fsinfoclass = 0;
4904 struct kstatfs stfs;
4907 int fs_infoclass_size = 0;
4909 rc = kern_path(share->path, LOOKUP_NO_SYMLINKS, &path);
4911 pr_err("cannot create vfs path\n");
4915 rc = vfs_statfs(&path, &stfs);
4917 pr_err("cannot do stat of path %s\n", share->path);
4922 fsinfoclass = req->FileInfoClass;
4924 switch (fsinfoclass) {
4925 case FS_DEVICE_INFORMATION:
4927 struct filesystem_device_info *info;
4929 info = (struct filesystem_device_info *)rsp->Buffer;
4931 info->DeviceType = cpu_to_le32(stfs.f_type);
4932 info->DeviceCharacteristics = cpu_to_le32(0x00000020);
4933 rsp->OutputBufferLength = cpu_to_le32(8);
4934 inc_rfc1001_len(work->response_buf, 8);
4935 fs_infoclass_size = FS_DEVICE_INFORMATION_SIZE;
4938 case FS_ATTRIBUTE_INFORMATION:
4940 struct filesystem_attribute_info *info;
4943 info = (struct filesystem_attribute_info *)rsp->Buffer;
4944 info->Attributes = cpu_to_le32(FILE_SUPPORTS_OBJECT_IDS |
4945 FILE_PERSISTENT_ACLS |
4946 FILE_UNICODE_ON_DISK |
4947 FILE_CASE_PRESERVED_NAMES |
4948 FILE_CASE_SENSITIVE_SEARCH |
4949 FILE_SUPPORTS_BLOCK_REFCOUNTING);
4951 info->Attributes |= cpu_to_le32(server_conf.share_fake_fscaps);
4953 info->MaxPathNameComponentLength = cpu_to_le32(stfs.f_namelen);
4954 len = smbConvertToUTF16((__le16 *)info->FileSystemName,
4955 "NTFS", PATH_MAX, conn->local_nls, 0);
4957 info->FileSystemNameLen = cpu_to_le32(len);
4958 sz = sizeof(struct filesystem_attribute_info) - 2 + len;
4959 rsp->OutputBufferLength = cpu_to_le32(sz);
4960 inc_rfc1001_len(work->response_buf, sz);
4961 fs_infoclass_size = FS_ATTRIBUTE_INFORMATION_SIZE;
4964 case FS_VOLUME_INFORMATION:
4966 struct filesystem_vol_info *info;
4968 unsigned int serial_crc = 0;
4970 info = (struct filesystem_vol_info *)(rsp->Buffer);
4971 info->VolumeCreationTime = 0;
4972 serial_crc = crc32_le(serial_crc, share->name,
4973 strlen(share->name));
4974 serial_crc = crc32_le(serial_crc, share->path,
4975 strlen(share->path));
4976 serial_crc = crc32_le(serial_crc, ksmbd_netbios_name(),
4977 strlen(ksmbd_netbios_name()));
4978 /* Taking dummy value of serial number*/
4979 info->SerialNumber = cpu_to_le32(serial_crc);
4980 len = smbConvertToUTF16((__le16 *)info->VolumeLabel,
4981 share->name, PATH_MAX,
4982 conn->local_nls, 0);
4984 info->VolumeLabelSize = cpu_to_le32(len);
4986 sz = sizeof(struct filesystem_vol_info) - 2 + len;
4987 rsp->OutputBufferLength = cpu_to_le32(sz);
4988 inc_rfc1001_len(work->response_buf, sz);
4989 fs_infoclass_size = FS_VOLUME_INFORMATION_SIZE;
4992 case FS_SIZE_INFORMATION:
4994 struct filesystem_info *info;
4996 info = (struct filesystem_info *)(rsp->Buffer);
4997 info->TotalAllocationUnits = cpu_to_le64(stfs.f_blocks);
4998 info->FreeAllocationUnits = cpu_to_le64(stfs.f_bfree);
4999 info->SectorsPerAllocationUnit = cpu_to_le32(1);
5000 info->BytesPerSector = cpu_to_le32(stfs.f_bsize);
5001 rsp->OutputBufferLength = cpu_to_le32(24);
5002 inc_rfc1001_len(work->response_buf, 24);
5003 fs_infoclass_size = FS_SIZE_INFORMATION_SIZE;
5006 case FS_FULL_SIZE_INFORMATION:
5008 struct smb2_fs_full_size_info *info;
5010 info = (struct smb2_fs_full_size_info *)(rsp->Buffer);
5011 info->TotalAllocationUnits = cpu_to_le64(stfs.f_blocks);
5012 info->CallerAvailableAllocationUnits =
5013 cpu_to_le64(stfs.f_bavail);
5014 info->ActualAvailableAllocationUnits =
5015 cpu_to_le64(stfs.f_bfree);
5016 info->SectorsPerAllocationUnit = cpu_to_le32(1);
5017 info->BytesPerSector = cpu_to_le32(stfs.f_bsize);
5018 rsp->OutputBufferLength = cpu_to_le32(32);
5019 inc_rfc1001_len(work->response_buf, 32);
5020 fs_infoclass_size = FS_FULL_SIZE_INFORMATION_SIZE;
5023 case FS_OBJECT_ID_INFORMATION:
5025 struct object_id_info *info;
5027 info = (struct object_id_info *)(rsp->Buffer);
5029 if (!user_guest(sess->user))
5030 memcpy(info->objid, user_passkey(sess->user), 16);
5032 memset(info->objid, 0, 16);
5034 info->extended_info.magic = cpu_to_le32(EXTENDED_INFO_MAGIC);
5035 info->extended_info.version = cpu_to_le32(1);
5036 info->extended_info.release = cpu_to_le32(1);
5037 info->extended_info.rel_date = 0;
5038 memcpy(info->extended_info.version_string, "1.1.0", strlen("1.1.0"));
5039 rsp->OutputBufferLength = cpu_to_le32(64);
5040 inc_rfc1001_len(work->response_buf, 64);
5041 fs_infoclass_size = FS_OBJECT_ID_INFORMATION_SIZE;
5044 case FS_SECTOR_SIZE_INFORMATION:
5046 struct smb3_fs_ss_info *info;
5047 unsigned int sector_size =
5048 min_t(unsigned int, path.mnt->mnt_sb->s_blocksize, 4096);
5050 info = (struct smb3_fs_ss_info *)(rsp->Buffer);
5052 info->LogicalBytesPerSector = cpu_to_le32(sector_size);
5053 info->PhysicalBytesPerSectorForAtomicity =
5054 cpu_to_le32(sector_size);
5055 info->PhysicalBytesPerSectorForPerf = cpu_to_le32(sector_size);
5056 info->FSEffPhysicalBytesPerSectorForAtomicity =
5057 cpu_to_le32(sector_size);
5058 info->Flags = cpu_to_le32(SSINFO_FLAGS_ALIGNED_DEVICE |
5059 SSINFO_FLAGS_PARTITION_ALIGNED_ON_DEVICE);
5060 info->ByteOffsetForSectorAlignment = 0;
5061 info->ByteOffsetForPartitionAlignment = 0;
5062 rsp->OutputBufferLength = cpu_to_le32(28);
5063 inc_rfc1001_len(work->response_buf, 28);
5064 fs_infoclass_size = FS_SECTOR_SIZE_INFORMATION_SIZE;
5067 case FS_CONTROL_INFORMATION:
5070 * TODO : The current implementation is based on
5071 * test result with win7(NTFS) server. It's need to
5072 * modify this to get valid Quota values
5075 struct smb2_fs_control_info *info;
5077 info = (struct smb2_fs_control_info *)(rsp->Buffer);
5078 info->FreeSpaceStartFiltering = 0;
5079 info->FreeSpaceThreshold = 0;
5080 info->FreeSpaceStopFiltering = 0;
5081 info->DefaultQuotaThreshold = cpu_to_le64(SMB2_NO_FID);
5082 info->DefaultQuotaLimit = cpu_to_le64(SMB2_NO_FID);
5084 rsp->OutputBufferLength = cpu_to_le32(48);
5085 inc_rfc1001_len(work->response_buf, 48);
5086 fs_infoclass_size = FS_CONTROL_INFORMATION_SIZE;
5089 case FS_POSIX_INFORMATION:
5091 struct filesystem_posix_info *info;
5093 if (!work->tcon->posix_extensions) {
5094 pr_err("client doesn't negotiate with SMB3.1.1 POSIX Extensions\n");
5097 info = (struct filesystem_posix_info *)(rsp->Buffer);
5098 info->OptimalTransferSize = cpu_to_le32(stfs.f_bsize);
5099 info->BlockSize = cpu_to_le32(stfs.f_bsize);
5100 info->TotalBlocks = cpu_to_le64(stfs.f_blocks);
5101 info->BlocksAvail = cpu_to_le64(stfs.f_bfree);
5102 info->UserBlocksAvail = cpu_to_le64(stfs.f_bavail);
5103 info->TotalFileNodes = cpu_to_le64(stfs.f_files);
5104 info->FreeFileNodes = cpu_to_le64(stfs.f_ffree);
5105 rsp->OutputBufferLength = cpu_to_le32(56);
5106 inc_rfc1001_len(work->response_buf, 56);
5107 fs_infoclass_size = FS_POSIX_INFORMATION_SIZE;
5115 rc = buffer_check_err(le32_to_cpu(req->OutputBufferLength),
5116 rsp, work->response_buf,
5122 static int smb2_get_info_sec(struct ksmbd_work *work,
5123 struct smb2_query_info_req *req,
5124 struct smb2_query_info_rsp *rsp)
5126 struct ksmbd_file *fp;
5127 struct user_namespace *user_ns;
5128 struct smb_ntsd *pntsd = (struct smb_ntsd *)rsp->Buffer, *ppntsd = NULL;
5129 struct smb_fattr fattr = {{0}};
5130 struct inode *inode;
5131 __u32 secdesclen = 0;
5132 unsigned int id = KSMBD_NO_FID, pid = KSMBD_NO_FID;
5133 int addition_info = le32_to_cpu(req->AdditionalInformation);
5134 int rc = 0, ppntsd_size = 0;
5136 if (addition_info & ~(OWNER_SECINFO | GROUP_SECINFO | DACL_SECINFO |
5137 PROTECTED_DACL_SECINFO |
5138 UNPROTECTED_DACL_SECINFO)) {
5139 ksmbd_debug(SMB, "Unsupported addition info: 0x%x)\n",
5142 pntsd->revision = cpu_to_le16(1);
5143 pntsd->type = cpu_to_le16(SELF_RELATIVE | DACL_PROTECTED);
5144 pntsd->osidoffset = 0;
5145 pntsd->gsidoffset = 0;
5146 pntsd->sacloffset = 0;
5147 pntsd->dacloffset = 0;
5149 secdesclen = sizeof(struct smb_ntsd);
5150 rsp->OutputBufferLength = cpu_to_le32(secdesclen);
5151 inc_rfc1001_len(work->response_buf, secdesclen);
5156 if (work->next_smb2_rcv_hdr_off) {
5157 if (!has_file_id(req->VolatileFileId)) {
5158 ksmbd_debug(SMB, "Compound request set FID = %llu\n",
5159 work->compound_fid);
5160 id = work->compound_fid;
5161 pid = work->compound_pfid;
5165 if (!has_file_id(id)) {
5166 id = req->VolatileFileId;
5167 pid = req->PersistentFileId;
5170 fp = ksmbd_lookup_fd_slow(work, id, pid);
5174 user_ns = file_mnt_user_ns(fp->filp);
5175 inode = file_inode(fp->filp);
5176 ksmbd_acls_fattr(&fattr, user_ns, inode);
5178 if (test_share_config_flag(work->tcon->share_conf,
5179 KSMBD_SHARE_FLAG_ACL_XATTR))
5180 ppntsd_size = ksmbd_vfs_get_sd_xattr(work->conn, user_ns,
5181 fp->filp->f_path.dentry,
5184 /* Check if sd buffer size exceeds response buffer size */
5185 if (smb2_resp_buf_len(work, 8) > ppntsd_size)
5186 rc = build_sec_desc(user_ns, pntsd, ppntsd, ppntsd_size,
5187 addition_info, &secdesclen, &fattr);
5188 posix_acl_release(fattr.cf_acls);
5189 posix_acl_release(fattr.cf_dacls);
5191 ksmbd_fd_put(work, fp);
5195 rsp->OutputBufferLength = cpu_to_le32(secdesclen);
5196 inc_rfc1001_len(work->response_buf, secdesclen);
5201 * smb2_query_info() - handler for smb2 query info command
5202 * @work: smb work containing query info request buffer
5204 * Return: 0 on success, otherwise error
5206 int smb2_query_info(struct ksmbd_work *work)
5208 struct smb2_query_info_req *req;
5209 struct smb2_query_info_rsp *rsp;
5212 WORK_BUFFERS(work, req, rsp);
5214 ksmbd_debug(SMB, "GOT query info request\n");
5216 switch (req->InfoType) {
5217 case SMB2_O_INFO_FILE:
5218 ksmbd_debug(SMB, "GOT SMB2_O_INFO_FILE\n");
5219 rc = smb2_get_info_file(work, req, rsp);
5221 case SMB2_O_INFO_FILESYSTEM:
5222 ksmbd_debug(SMB, "GOT SMB2_O_INFO_FILESYSTEM\n");
5223 rc = smb2_get_info_filesystem(work, req, rsp);
5225 case SMB2_O_INFO_SECURITY:
5226 ksmbd_debug(SMB, "GOT SMB2_O_INFO_SECURITY\n");
5227 rc = smb2_get_info_sec(work, req, rsp);
5230 ksmbd_debug(SMB, "InfoType %d not supported yet\n",
5237 rsp->hdr.Status = STATUS_ACCESS_DENIED;
5238 else if (rc == -ENOENT)
5239 rsp->hdr.Status = STATUS_FILE_CLOSED;
5240 else if (rc == -EIO)
5241 rsp->hdr.Status = STATUS_UNEXPECTED_IO_ERROR;
5242 else if (rc == -EOPNOTSUPP || rsp->hdr.Status == 0)
5243 rsp->hdr.Status = STATUS_INVALID_INFO_CLASS;
5244 smb2_set_err_rsp(work);
5246 ksmbd_debug(SMB, "error while processing smb2 query rc = %d\n",
5250 rsp->StructureSize = cpu_to_le16(9);
5251 rsp->OutputBufferOffset = cpu_to_le16(72);
5252 inc_rfc1001_len(work->response_buf, 8);
5257 * smb2_close_pipe() - handler for closing IPC pipe
5258 * @work: smb work containing close request buffer
5262 static noinline int smb2_close_pipe(struct ksmbd_work *work)
5265 struct smb2_close_req *req = smb2_get_msg(work->request_buf);
5266 struct smb2_close_rsp *rsp = smb2_get_msg(work->response_buf);
5268 id = req->VolatileFileId;
5269 ksmbd_session_rpc_close(work->sess, id);
5271 rsp->StructureSize = cpu_to_le16(60);
5274 rsp->CreationTime = 0;
5275 rsp->LastAccessTime = 0;
5276 rsp->LastWriteTime = 0;
5277 rsp->ChangeTime = 0;
5278 rsp->AllocationSize = 0;
5280 rsp->Attributes = 0;
5281 inc_rfc1001_len(work->response_buf, 60);
5286 * smb2_close() - handler for smb2 close file command
5287 * @work: smb work containing close request buffer
5291 int smb2_close(struct ksmbd_work *work)
5293 u64 volatile_id = KSMBD_NO_FID;
5295 struct smb2_close_req *req;
5296 struct smb2_close_rsp *rsp;
5297 struct ksmbd_conn *conn = work->conn;
5298 struct ksmbd_file *fp;
5299 struct inode *inode;
5303 WORK_BUFFERS(work, req, rsp);
5305 if (test_share_config_flag(work->tcon->share_conf,
5306 KSMBD_SHARE_FLAG_PIPE)) {
5307 ksmbd_debug(SMB, "IPC pipe close request\n");
5308 return smb2_close_pipe(work);
5311 sess_id = le64_to_cpu(req->hdr.SessionId);
5312 if (req->hdr.Flags & SMB2_FLAGS_RELATED_OPERATIONS)
5313 sess_id = work->compound_sid;
5315 work->compound_sid = 0;
5316 if (check_session_id(conn, sess_id)) {
5317 work->compound_sid = sess_id;
5319 rsp->hdr.Status = STATUS_USER_SESSION_DELETED;
5320 if (req->hdr.Flags & SMB2_FLAGS_RELATED_OPERATIONS)
5321 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
5326 if (work->next_smb2_rcv_hdr_off &&
5327 !has_file_id(req->VolatileFileId)) {
5328 if (!has_file_id(work->compound_fid)) {
5329 /* file already closed, return FILE_CLOSED */
5330 ksmbd_debug(SMB, "file already closed\n");
5331 rsp->hdr.Status = STATUS_FILE_CLOSED;
5336 "Compound request set FID = %llu:%llu\n",
5338 work->compound_pfid);
5339 volatile_id = work->compound_fid;
5341 /* file closed, stored id is not valid anymore */
5342 work->compound_fid = KSMBD_NO_FID;
5343 work->compound_pfid = KSMBD_NO_FID;
5346 volatile_id = req->VolatileFileId;
5348 ksmbd_debug(SMB, "volatile_id = %llu\n", volatile_id);
5350 rsp->StructureSize = cpu_to_le16(60);
5353 if (req->Flags == SMB2_CLOSE_FLAG_POSTQUERY_ATTRIB) {
5354 fp = ksmbd_lookup_fd_fast(work, volatile_id);
5360 inode = file_inode(fp->filp);
5361 rsp->Flags = SMB2_CLOSE_FLAG_POSTQUERY_ATTRIB;
5362 rsp->AllocationSize = S_ISDIR(inode->i_mode) ? 0 :
5363 cpu_to_le64(inode->i_blocks << 9);
5364 rsp->EndOfFile = cpu_to_le64(inode->i_size);
5365 rsp->Attributes = fp->f_ci->m_fattr;
5366 rsp->CreationTime = cpu_to_le64(fp->create_time);
5367 time = ksmbd_UnixTimeToNT(inode->i_atime);
5368 rsp->LastAccessTime = cpu_to_le64(time);
5369 time = ksmbd_UnixTimeToNT(inode->i_mtime);
5370 rsp->LastWriteTime = cpu_to_le64(time);
5371 time = ksmbd_UnixTimeToNT(inode->i_ctime);
5372 rsp->ChangeTime = cpu_to_le64(time);
5373 ksmbd_fd_put(work, fp);
5376 rsp->AllocationSize = 0;
5378 rsp->Attributes = 0;
5379 rsp->CreationTime = 0;
5380 rsp->LastAccessTime = 0;
5381 rsp->LastWriteTime = 0;
5382 rsp->ChangeTime = 0;
5385 err = ksmbd_close_fd(work, volatile_id);
5388 if (rsp->hdr.Status == 0)
5389 rsp->hdr.Status = STATUS_FILE_CLOSED;
5390 smb2_set_err_rsp(work);
5392 inc_rfc1001_len(work->response_buf, 60);
5399 * smb2_echo() - handler for smb2 echo(ping) command
5400 * @work: smb work containing echo request buffer
5404 int smb2_echo(struct ksmbd_work *work)
5406 struct smb2_echo_rsp *rsp = smb2_get_msg(work->response_buf);
5408 rsp->StructureSize = cpu_to_le16(4);
5410 inc_rfc1001_len(work->response_buf, 4);
5414 static int smb2_rename(struct ksmbd_work *work,
5415 struct ksmbd_file *fp,
5416 struct user_namespace *user_ns,
5417 struct smb2_file_rename_info *file_info,
5418 struct nls_table *local_nls)
5420 struct ksmbd_share_config *share = fp->tcon->share_conf;
5421 char *new_name = NULL, *abs_oldname = NULL, *old_name = NULL;
5422 char *pathname = NULL;
5424 bool file_present = true;
5427 ksmbd_debug(SMB, "setting FILE_RENAME_INFO\n");
5428 pathname = kmalloc(PATH_MAX, GFP_KERNEL);
5432 abs_oldname = file_path(fp->filp, pathname, PATH_MAX);
5433 if (IS_ERR(abs_oldname)) {
5437 old_name = strrchr(abs_oldname, '/');
5438 if (old_name && old_name[1] != '\0') {
5441 ksmbd_debug(SMB, "can't get last component in path %s\n",
5447 new_name = smb2_get_name(file_info->FileName,
5448 le32_to_cpu(file_info->FileNameLength),
5450 if (IS_ERR(new_name)) {
5451 rc = PTR_ERR(new_name);
5455 if (strchr(new_name, ':')) {
5457 char *xattr_stream_name, *stream_name = NULL;
5458 size_t xattr_stream_size;
5461 rc = parse_stream_name(new_name, &stream_name, &s_type);
5465 len = strlen(new_name);
5466 if (len > 0 && new_name[len - 1] != '/') {
5467 pr_err("not allow base filename in rename\n");
5472 rc = ksmbd_vfs_xattr_stream_name(stream_name,
5479 rc = ksmbd_vfs_setxattr(user_ns,
5480 fp->filp->f_path.dentry,
5484 pr_err("failed to store stream name in xattr: %d\n",
5493 ksmbd_debug(SMB, "new name %s\n", new_name);
5494 rc = ksmbd_vfs_kern_path(work, new_name, LOOKUP_NO_SYMLINKS, &path, 1);
5498 file_present = false;
5503 if (ksmbd_share_veto_filename(share, new_name)) {
5505 ksmbd_debug(SMB, "Can't rename vetoed file: %s\n", new_name);
5509 if (file_info->ReplaceIfExists) {
5511 rc = ksmbd_vfs_remove_file(work, new_name);
5513 if (rc != -ENOTEMPTY)
5515 ksmbd_debug(SMB, "cannot delete %s, rc %d\n",
5522 strncmp(old_name, path.dentry->d_name.name, strlen(old_name))) {
5525 "cannot rename already existing file\n");
5530 rc = ksmbd_vfs_fp_rename(work, fp, new_name);
5533 if (!IS_ERR(new_name))
5538 static int smb2_create_link(struct ksmbd_work *work,
5539 struct ksmbd_share_config *share,
5540 struct smb2_file_link_info *file_info,
5541 unsigned int buf_len, struct file *filp,
5542 struct nls_table *local_nls)
5544 char *link_name = NULL, *target_name = NULL, *pathname = NULL;
5546 bool file_present = true;
5549 if (buf_len < (u64)sizeof(struct smb2_file_link_info) +
5550 le32_to_cpu(file_info->FileNameLength))
5553 ksmbd_debug(SMB, "setting FILE_LINK_INFORMATION\n");
5554 pathname = kmalloc(PATH_MAX, GFP_KERNEL);
5558 link_name = smb2_get_name(file_info->FileName,
5559 le32_to_cpu(file_info->FileNameLength),
5561 if (IS_ERR(link_name) || S_ISDIR(file_inode(filp)->i_mode)) {
5566 ksmbd_debug(SMB, "link name is %s\n", link_name);
5567 target_name = file_path(filp, pathname, PATH_MAX);
5568 if (IS_ERR(target_name)) {
5573 ksmbd_debug(SMB, "target name is %s\n", target_name);
5574 rc = ksmbd_vfs_kern_path(work, link_name, LOOKUP_NO_SYMLINKS, &path, 0);
5578 file_present = false;
5583 if (file_info->ReplaceIfExists) {
5585 rc = ksmbd_vfs_remove_file(work, link_name);
5588 ksmbd_debug(SMB, "cannot delete %s\n",
5596 ksmbd_debug(SMB, "link already exists\n");
5601 rc = ksmbd_vfs_link(work, target_name, link_name);
5605 if (!IS_ERR(link_name))
5611 static int set_file_basic_info(struct ksmbd_file *fp,
5612 struct smb2_file_basic_info *file_info,
5613 struct ksmbd_share_config *share)
5617 struct inode *inode;
5618 struct user_namespace *user_ns;
5621 if (!(fp->daccess & FILE_WRITE_ATTRIBUTES_LE))
5626 inode = file_inode(filp);
5627 user_ns = file_mnt_user_ns(filp);
5629 if (file_info->CreationTime)
5630 fp->create_time = le64_to_cpu(file_info->CreationTime);
5632 if (file_info->LastAccessTime) {
5633 attrs.ia_atime = ksmbd_NTtimeToUnix(file_info->LastAccessTime);
5634 attrs.ia_valid |= (ATTR_ATIME | ATTR_ATIME_SET);
5637 attrs.ia_valid |= ATTR_CTIME;
5638 if (file_info->ChangeTime)
5639 attrs.ia_ctime = ksmbd_NTtimeToUnix(file_info->ChangeTime);
5641 attrs.ia_ctime = inode->i_ctime;
5643 if (file_info->LastWriteTime) {
5644 attrs.ia_mtime = ksmbd_NTtimeToUnix(file_info->LastWriteTime);
5645 attrs.ia_valid |= (ATTR_MTIME | ATTR_MTIME_SET);
5648 if (file_info->Attributes) {
5649 if (!S_ISDIR(inode->i_mode) &&
5650 file_info->Attributes & FILE_ATTRIBUTE_DIRECTORY_LE) {
5651 pr_err("can't change a file to a directory\n");
5655 if (!(S_ISDIR(inode->i_mode) && file_info->Attributes == FILE_ATTRIBUTE_NORMAL_LE))
5656 fp->f_ci->m_fattr = file_info->Attributes |
5657 (fp->f_ci->m_fattr & FILE_ATTRIBUTE_DIRECTORY_LE);
5660 if (test_share_config_flag(share, KSMBD_SHARE_FLAG_STORE_DOS_ATTRS) &&
5661 (file_info->CreationTime || file_info->Attributes)) {
5662 struct xattr_dos_attrib da = {0};
5665 da.itime = fp->itime;
5666 da.create_time = fp->create_time;
5667 da.attr = le32_to_cpu(fp->f_ci->m_fattr);
5668 da.flags = XATTR_DOSINFO_ATTRIB | XATTR_DOSINFO_CREATE_TIME |
5669 XATTR_DOSINFO_ITIME;
5671 rc = ksmbd_vfs_set_dos_attrib_xattr(user_ns,
5672 filp->f_path.dentry, &da);
5675 "failed to restore file attribute in EA\n");
5679 if (attrs.ia_valid) {
5680 struct dentry *dentry = filp->f_path.dentry;
5681 struct inode *inode = d_inode(dentry);
5683 if (IS_IMMUTABLE(inode) || IS_APPEND(inode))
5687 inode->i_ctime = attrs.ia_ctime;
5688 attrs.ia_valid &= ~ATTR_CTIME;
5689 rc = notify_change(user_ns, dentry, &attrs, NULL);
5690 inode_unlock(inode);
5695 static int set_file_allocation_info(struct ksmbd_work *work,
5696 struct ksmbd_file *fp,
5697 struct smb2_file_alloc_info *file_alloc_info)
5700 * TODO : It's working fine only when store dos attributes
5701 * is not yes. need to implement a logic which works
5702 * properly with any smb.conf option
5706 struct inode *inode;
5709 if (!(fp->daccess & FILE_WRITE_DATA_LE))
5712 alloc_blks = (le64_to_cpu(file_alloc_info->AllocationSize) + 511) >> 9;
5713 inode = file_inode(fp->filp);
5715 if (alloc_blks > inode->i_blocks) {
5716 smb_break_all_levII_oplock(work, fp, 1);
5717 rc = vfs_fallocate(fp->filp, FALLOC_FL_KEEP_SIZE, 0,
5719 if (rc && rc != -EOPNOTSUPP) {
5720 pr_err("vfs_fallocate is failed : %d\n", rc);
5723 } else if (alloc_blks < inode->i_blocks) {
5727 * Allocation size could be smaller than original one
5728 * which means allocated blocks in file should be
5729 * deallocated. use truncate to cut out it, but inode
5730 * size is also updated with truncate offset.
5731 * inode size is retained by backup inode size.
5733 size = i_size_read(inode);
5734 rc = ksmbd_vfs_truncate(work, fp, alloc_blks * 512);
5736 pr_err("truncate failed!, err %d\n", rc);
5739 if (size < alloc_blks * 512)
5740 i_size_write(inode, size);
5745 static int set_end_of_file_info(struct ksmbd_work *work, struct ksmbd_file *fp,
5746 struct smb2_file_eof_info *file_eof_info)
5749 struct inode *inode;
5752 if (!(fp->daccess & FILE_WRITE_DATA_LE))
5755 newsize = le64_to_cpu(file_eof_info->EndOfFile);
5756 inode = file_inode(fp->filp);
5759 * If FILE_END_OF_FILE_INFORMATION of set_info_file is called
5760 * on FAT32 shared device, truncate execution time is too long
5761 * and network error could cause from windows client. because
5762 * truncate of some filesystem like FAT32 fill zero data in
5765 if (inode->i_sb->s_magic != MSDOS_SUPER_MAGIC) {
5766 ksmbd_debug(SMB, "truncated to newsize %lld\n", newsize);
5767 rc = ksmbd_vfs_truncate(work, fp, newsize);
5769 ksmbd_debug(SMB, "truncate failed!, err %d\n", rc);
5778 static int set_rename_info(struct ksmbd_work *work, struct ksmbd_file *fp,
5779 struct smb2_file_rename_info *rename_info,
5780 unsigned int buf_len)
5782 struct user_namespace *user_ns;
5783 struct ksmbd_file *parent_fp;
5784 struct dentry *parent;
5785 struct dentry *dentry = fp->filp->f_path.dentry;
5788 if (!(fp->daccess & FILE_DELETE_LE)) {
5789 pr_err("no right to delete : 0x%x\n", fp->daccess);
5793 if (buf_len < (u64)sizeof(struct smb2_file_rename_info) +
5794 le32_to_cpu(rename_info->FileNameLength))
5797 user_ns = file_mnt_user_ns(fp->filp);
5798 if (ksmbd_stream_fd(fp))
5801 parent = dget_parent(dentry);
5802 ret = ksmbd_vfs_lock_parent(user_ns, parent, dentry);
5808 parent_fp = ksmbd_lookup_fd_inode(d_inode(parent));
5809 inode_unlock(d_inode(parent));
5813 if (parent_fp->daccess & FILE_DELETE_LE) {
5814 pr_err("parent dir is opened with delete access\n");
5815 ksmbd_fd_put(work, parent_fp);
5818 ksmbd_fd_put(work, parent_fp);
5821 return smb2_rename(work, fp, user_ns, rename_info,
5822 work->conn->local_nls);
5825 static int set_file_disposition_info(struct ksmbd_file *fp,
5826 struct smb2_file_disposition_info *file_info)
5828 struct inode *inode;
5830 if (!(fp->daccess & FILE_DELETE_LE)) {
5831 pr_err("no right to delete : 0x%x\n", fp->daccess);
5835 inode = file_inode(fp->filp);
5836 if (file_info->DeletePending) {
5837 if (S_ISDIR(inode->i_mode) &&
5838 ksmbd_vfs_empty_dir(fp) == -ENOTEMPTY)
5840 ksmbd_set_inode_pending_delete(fp);
5842 ksmbd_clear_inode_pending_delete(fp);
5847 static int set_file_position_info(struct ksmbd_file *fp,
5848 struct smb2_file_pos_info *file_info)
5850 loff_t current_byte_offset;
5851 unsigned long sector_size;
5852 struct inode *inode;
5854 inode = file_inode(fp->filp);
5855 current_byte_offset = le64_to_cpu(file_info->CurrentByteOffset);
5856 sector_size = inode->i_sb->s_blocksize;
5858 if (current_byte_offset < 0 ||
5859 (fp->coption == FILE_NO_INTERMEDIATE_BUFFERING_LE &&
5860 current_byte_offset & (sector_size - 1))) {
5861 pr_err("CurrentByteOffset is not valid : %llu\n",
5862 current_byte_offset);
5866 fp->filp->f_pos = current_byte_offset;
5870 static int set_file_mode_info(struct ksmbd_file *fp,
5871 struct smb2_file_mode_info *file_info)
5875 mode = file_info->Mode;
5877 if ((mode & ~FILE_MODE_INFO_MASK)) {
5878 pr_err("Mode is not valid : 0x%x\n", le32_to_cpu(mode));
5883 * TODO : need to implement consideration for
5884 * FILE_SYNCHRONOUS_IO_ALERT and FILE_SYNCHRONOUS_IO_NONALERT
5886 ksmbd_vfs_set_fadvise(fp->filp, mode);
5892 * smb2_set_info_file() - handler for smb2 set info command
5893 * @work: smb work containing set info command buffer
5894 * @fp: ksmbd_file pointer
5895 * @req: request buffer pointer
5896 * @share: ksmbd_share_config pointer
5898 * Return: 0 on success, otherwise error
5899 * TODO: need to implement an error handling for STATUS_INFO_LENGTH_MISMATCH
5901 static int smb2_set_info_file(struct ksmbd_work *work, struct ksmbd_file *fp,
5902 struct smb2_set_info_req *req,
5903 struct ksmbd_share_config *share)
5905 unsigned int buf_len = le32_to_cpu(req->BufferLength);
5907 switch (req->FileInfoClass) {
5908 case FILE_BASIC_INFORMATION:
5910 if (buf_len < sizeof(struct smb2_file_basic_info))
5913 return set_file_basic_info(fp, (struct smb2_file_basic_info *)req->Buffer, share);
5915 case FILE_ALLOCATION_INFORMATION:
5917 if (buf_len < sizeof(struct smb2_file_alloc_info))
5920 return set_file_allocation_info(work, fp,
5921 (struct smb2_file_alloc_info *)req->Buffer);
5923 case FILE_END_OF_FILE_INFORMATION:
5925 if (buf_len < sizeof(struct smb2_file_eof_info))
5928 return set_end_of_file_info(work, fp,
5929 (struct smb2_file_eof_info *)req->Buffer);
5931 case FILE_RENAME_INFORMATION:
5933 if (!test_tree_conn_flag(work->tcon, KSMBD_TREE_CONN_FLAG_WRITABLE)) {
5935 "User does not have write permission\n");
5939 if (buf_len < sizeof(struct smb2_file_rename_info))
5942 return set_rename_info(work, fp,
5943 (struct smb2_file_rename_info *)req->Buffer,
5946 case FILE_LINK_INFORMATION:
5948 if (buf_len < sizeof(struct smb2_file_link_info))
5951 return smb2_create_link(work, work->tcon->share_conf,
5952 (struct smb2_file_link_info *)req->Buffer,
5954 work->conn->local_nls);
5956 case FILE_DISPOSITION_INFORMATION:
5958 if (!test_tree_conn_flag(work->tcon, KSMBD_TREE_CONN_FLAG_WRITABLE)) {
5960 "User does not have write permission\n");
5964 if (buf_len < sizeof(struct smb2_file_disposition_info))
5967 return set_file_disposition_info(fp,
5968 (struct smb2_file_disposition_info *)req->Buffer);
5970 case FILE_FULL_EA_INFORMATION:
5972 if (!(fp->daccess & FILE_WRITE_EA_LE)) {
5973 pr_err("Not permitted to write ext attr: 0x%x\n",
5978 if (buf_len < sizeof(struct smb2_ea_info))
5981 return smb2_set_ea((struct smb2_ea_info *)req->Buffer,
5982 buf_len, &fp->filp->f_path);
5984 case FILE_POSITION_INFORMATION:
5986 if (buf_len < sizeof(struct smb2_file_pos_info))
5989 return set_file_position_info(fp, (struct smb2_file_pos_info *)req->Buffer);
5991 case FILE_MODE_INFORMATION:
5993 if (buf_len < sizeof(struct smb2_file_mode_info))
5996 return set_file_mode_info(fp, (struct smb2_file_mode_info *)req->Buffer);
6000 pr_err("Unimplemented Fileinfoclass :%d\n", req->FileInfoClass);
6004 static int smb2_set_info_sec(struct ksmbd_file *fp, int addition_info,
6005 char *buffer, int buf_len)
6007 struct smb_ntsd *pntsd = (struct smb_ntsd *)buffer;
6009 fp->saccess |= FILE_SHARE_DELETE_LE;
6011 return set_info_sec(fp->conn, fp->tcon, &fp->filp->f_path, pntsd,
6016 * smb2_set_info() - handler for smb2 set info command handler
6017 * @work: smb work containing set info request buffer
6019 * Return: 0 on success, otherwise error
6021 int smb2_set_info(struct ksmbd_work *work)
6023 struct smb2_set_info_req *req;
6024 struct smb2_set_info_rsp *rsp;
6025 struct ksmbd_file *fp;
6027 unsigned int id = KSMBD_NO_FID, pid = KSMBD_NO_FID;
6029 ksmbd_debug(SMB, "Received set info request\n");
6031 if (work->next_smb2_rcv_hdr_off) {
6032 req = ksmbd_req_buf_next(work);
6033 rsp = ksmbd_resp_buf_next(work);
6034 if (!has_file_id(req->VolatileFileId)) {
6035 ksmbd_debug(SMB, "Compound request set FID = %llu\n",
6036 work->compound_fid);
6037 id = work->compound_fid;
6038 pid = work->compound_pfid;
6041 req = smb2_get_msg(work->request_buf);
6042 rsp = smb2_get_msg(work->response_buf);
6045 if (!has_file_id(id)) {
6046 id = req->VolatileFileId;
6047 pid = req->PersistentFileId;
6050 fp = ksmbd_lookup_fd_slow(work, id, pid);
6052 ksmbd_debug(SMB, "Invalid id for close: %u\n", id);
6057 switch (req->InfoType) {
6058 case SMB2_O_INFO_FILE:
6059 ksmbd_debug(SMB, "GOT SMB2_O_INFO_FILE\n");
6060 rc = smb2_set_info_file(work, fp, req, work->tcon->share_conf);
6062 case SMB2_O_INFO_SECURITY:
6063 ksmbd_debug(SMB, "GOT SMB2_O_INFO_SECURITY\n");
6064 if (ksmbd_override_fsids(work)) {
6068 rc = smb2_set_info_sec(fp,
6069 le32_to_cpu(req->AdditionalInformation),
6071 le32_to_cpu(req->BufferLength));
6072 ksmbd_revert_fsids(work);
6081 rsp->StructureSize = cpu_to_le16(2);
6082 inc_rfc1001_len(work->response_buf, 2);
6083 ksmbd_fd_put(work, fp);
6087 if (rc == -EACCES || rc == -EPERM || rc == -EXDEV)
6088 rsp->hdr.Status = STATUS_ACCESS_DENIED;
6089 else if (rc == -EINVAL)
6090 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
6091 else if (rc == -ESHARE)
6092 rsp->hdr.Status = STATUS_SHARING_VIOLATION;
6093 else if (rc == -ENOENT)
6094 rsp->hdr.Status = STATUS_OBJECT_NAME_INVALID;
6095 else if (rc == -EBUSY || rc == -ENOTEMPTY)
6096 rsp->hdr.Status = STATUS_DIRECTORY_NOT_EMPTY;
6097 else if (rc == -EAGAIN)
6098 rsp->hdr.Status = STATUS_FILE_LOCK_CONFLICT;
6099 else if (rc == -EBADF || rc == -ESTALE)
6100 rsp->hdr.Status = STATUS_INVALID_HANDLE;
6101 else if (rc == -EEXIST)
6102 rsp->hdr.Status = STATUS_OBJECT_NAME_COLLISION;
6103 else if (rsp->hdr.Status == 0 || rc == -EOPNOTSUPP)
6104 rsp->hdr.Status = STATUS_INVALID_INFO_CLASS;
6105 smb2_set_err_rsp(work);
6106 ksmbd_fd_put(work, fp);
6107 ksmbd_debug(SMB, "error while processing smb2 query rc = %d\n", rc);
6112 * smb2_read_pipe() - handler for smb2 read from IPC pipe
6113 * @work: smb work containing read IPC pipe command buffer
6115 * Return: 0 on success, otherwise error
6117 static noinline int smb2_read_pipe(struct ksmbd_work *work)
6119 int nbytes = 0, err;
6121 struct ksmbd_rpc_command *rpc_resp;
6122 struct smb2_read_req *req = smb2_get_msg(work->request_buf);
6123 struct smb2_read_rsp *rsp = smb2_get_msg(work->response_buf);
6125 id = req->VolatileFileId;
6127 inc_rfc1001_len(work->response_buf, 16);
6128 rpc_resp = ksmbd_rpc_read(work->sess, id);
6130 if (rpc_resp->flags != KSMBD_RPC_OK) {
6135 work->aux_payload_buf =
6136 kvmalloc(rpc_resp->payload_sz, GFP_KERNEL | __GFP_ZERO);
6137 if (!work->aux_payload_buf) {
6142 memcpy(work->aux_payload_buf, rpc_resp->payload,
6143 rpc_resp->payload_sz);
6145 nbytes = rpc_resp->payload_sz;
6146 work->resp_hdr_sz = get_rfc1002_len(work->response_buf) + 4;
6147 work->aux_payload_sz = nbytes;
6151 rsp->StructureSize = cpu_to_le16(17);
6152 rsp->DataOffset = 80;
6154 rsp->DataLength = cpu_to_le32(nbytes);
6155 rsp->DataRemaining = 0;
6157 inc_rfc1001_len(work->response_buf, nbytes);
6161 rsp->hdr.Status = STATUS_UNEXPECTED_IO_ERROR;
6162 smb2_set_err_rsp(work);
6167 static int smb2_set_remote_key_for_rdma(struct ksmbd_work *work,
6168 struct smb2_buffer_desc_v1 *desc,
6170 __le16 ChannelInfoLength)
6172 unsigned int i, ch_count;
6174 if (work->conn->dialect == SMB30_PROT_ID &&
6175 Channel != SMB2_CHANNEL_RDMA_V1)
6178 ch_count = le16_to_cpu(ChannelInfoLength) / sizeof(*desc);
6179 if (ksmbd_debug_types & KSMBD_DEBUG_RDMA) {
6180 for (i = 0; i < ch_count; i++) {
6181 pr_info("RDMA r/w request %#x: token %#x, length %#x\n",
6183 le32_to_cpu(desc[i].token),
6184 le32_to_cpu(desc[i].length));
6190 work->need_invalidate_rkey =
6191 (Channel == SMB2_CHANNEL_RDMA_V1_INVALIDATE);
6192 if (Channel == SMB2_CHANNEL_RDMA_V1_INVALIDATE)
6193 work->remote_key = le32_to_cpu(desc->token);
6197 static ssize_t smb2_read_rdma_channel(struct ksmbd_work *work,
6198 struct smb2_read_req *req, void *data_buf,
6203 err = ksmbd_conn_rdma_write(work->conn, data_buf, length,
6204 (struct smb2_buffer_desc_v1 *)
6205 ((char *)req + le16_to_cpu(req->ReadChannelInfoOffset)),
6206 le16_to_cpu(req->ReadChannelInfoLength));
6214 * smb2_read() - handler for smb2 read from file
6215 * @work: smb work containing read command buffer
6217 * Return: 0 on success, otherwise error
6219 int smb2_read(struct ksmbd_work *work)
6221 struct ksmbd_conn *conn = work->conn;
6222 struct smb2_read_req *req;
6223 struct smb2_read_rsp *rsp;
6224 struct ksmbd_file *fp = NULL;
6226 size_t length, mincount;
6227 ssize_t nbytes = 0, remain_bytes = 0;
6229 bool is_rdma_channel = false;
6230 unsigned int max_read_size = conn->vals->max_read_size;
6232 WORK_BUFFERS(work, req, rsp);
6234 if (test_share_config_flag(work->tcon->share_conf,
6235 KSMBD_SHARE_FLAG_PIPE)) {
6236 ksmbd_debug(SMB, "IPC pipe read request\n");
6237 return smb2_read_pipe(work);
6240 if (req->Channel == SMB2_CHANNEL_RDMA_V1_INVALIDATE ||
6241 req->Channel == SMB2_CHANNEL_RDMA_V1) {
6242 is_rdma_channel = true;
6243 max_read_size = get_smbd_max_read_write_size();
6246 if (is_rdma_channel == true) {
6247 unsigned int ch_offset = le16_to_cpu(req->ReadChannelInfoOffset);
6249 if (ch_offset < offsetof(struct smb2_read_req, Buffer)) {
6253 err = smb2_set_remote_key_for_rdma(work,
6254 (struct smb2_buffer_desc_v1 *)
6255 ((char *)req + ch_offset),
6257 req->ReadChannelInfoLength);
6262 fp = ksmbd_lookup_fd_slow(work, req->VolatileFileId, req->PersistentFileId);
6268 if (!(fp->daccess & (FILE_READ_DATA_LE | FILE_READ_ATTRIBUTES_LE))) {
6269 pr_err("Not permitted to read : 0x%x\n", fp->daccess);
6274 offset = le64_to_cpu(req->Offset);
6275 length = le32_to_cpu(req->Length);
6276 mincount = le32_to_cpu(req->MinimumCount);
6278 if (length > max_read_size) {
6279 ksmbd_debug(SMB, "limiting read size to max size(%u)\n",
6285 ksmbd_debug(SMB, "filename %pD, offset %lld, len %zu\n",
6286 fp->filp, offset, length);
6288 work->aux_payload_buf = kvmalloc(length, GFP_KERNEL | __GFP_ZERO);
6289 if (!work->aux_payload_buf) {
6294 nbytes = ksmbd_vfs_read(work, fp, length, &offset);
6300 if ((nbytes == 0 && length != 0) || nbytes < mincount) {
6301 kvfree(work->aux_payload_buf);
6302 work->aux_payload_buf = NULL;
6303 rsp->hdr.Status = STATUS_END_OF_FILE;
6304 smb2_set_err_rsp(work);
6305 ksmbd_fd_put(work, fp);
6309 ksmbd_debug(SMB, "nbytes %zu, offset %lld mincount %zu\n",
6310 nbytes, offset, mincount);
6312 if (is_rdma_channel == true) {
6313 /* write data to the client using rdma channel */
6314 remain_bytes = smb2_read_rdma_channel(work, req,
6315 work->aux_payload_buf,
6317 kvfree(work->aux_payload_buf);
6318 work->aux_payload_buf = NULL;
6321 if (remain_bytes < 0) {
6322 err = (int)remain_bytes;
6327 rsp->StructureSize = cpu_to_le16(17);
6328 rsp->DataOffset = 80;
6330 rsp->DataLength = cpu_to_le32(nbytes);
6331 rsp->DataRemaining = cpu_to_le32(remain_bytes);
6333 inc_rfc1001_len(work->response_buf, 16);
6334 work->resp_hdr_sz = get_rfc1002_len(work->response_buf) + 4;
6335 work->aux_payload_sz = nbytes;
6336 inc_rfc1001_len(work->response_buf, nbytes);
6337 ksmbd_fd_put(work, fp);
6343 rsp->hdr.Status = STATUS_INVALID_DEVICE_REQUEST;
6344 else if (err == -EAGAIN)
6345 rsp->hdr.Status = STATUS_FILE_LOCK_CONFLICT;
6346 else if (err == -ENOENT)
6347 rsp->hdr.Status = STATUS_FILE_CLOSED;
6348 else if (err == -EACCES)
6349 rsp->hdr.Status = STATUS_ACCESS_DENIED;
6350 else if (err == -ESHARE)
6351 rsp->hdr.Status = STATUS_SHARING_VIOLATION;
6352 else if (err == -EINVAL)
6353 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
6355 rsp->hdr.Status = STATUS_INVALID_HANDLE;
6357 smb2_set_err_rsp(work);
6359 ksmbd_fd_put(work, fp);
6364 * smb2_write_pipe() - handler for smb2 write on IPC pipe
6365 * @work: smb work containing write IPC pipe command buffer
6367 * Return: 0 on success, otherwise error
6369 static noinline int smb2_write_pipe(struct ksmbd_work *work)
6371 struct smb2_write_req *req = smb2_get_msg(work->request_buf);
6372 struct smb2_write_rsp *rsp = smb2_get_msg(work->response_buf);
6373 struct ksmbd_rpc_command *rpc_resp;
6375 int err = 0, ret = 0;
6379 length = le32_to_cpu(req->Length);
6380 id = req->VolatileFileId;
6382 if ((u64)le16_to_cpu(req->DataOffset) + length >
6383 get_rfc1002_len(work->request_buf)) {
6384 pr_err("invalid write data offset %u, smb_len %u\n",
6385 le16_to_cpu(req->DataOffset),
6386 get_rfc1002_len(work->request_buf));
6391 data_buf = (char *)(((char *)&req->hdr.ProtocolId) +
6392 le16_to_cpu(req->DataOffset));
6394 rpc_resp = ksmbd_rpc_write(work->sess, id, data_buf, length);
6396 if (rpc_resp->flags == KSMBD_RPC_ENOTIMPLEMENTED) {
6397 rsp->hdr.Status = STATUS_NOT_SUPPORTED;
6399 smb2_set_err_rsp(work);
6402 if (rpc_resp->flags != KSMBD_RPC_OK) {
6403 rsp->hdr.Status = STATUS_INVALID_HANDLE;
6404 smb2_set_err_rsp(work);
6411 rsp->StructureSize = cpu_to_le16(17);
6412 rsp->DataOffset = 0;
6414 rsp->DataLength = cpu_to_le32(length);
6415 rsp->DataRemaining = 0;
6417 inc_rfc1001_len(work->response_buf, 16);
6421 rsp->hdr.Status = STATUS_INVALID_HANDLE;
6422 smb2_set_err_rsp(work);
6428 static ssize_t smb2_write_rdma_channel(struct ksmbd_work *work,
6429 struct smb2_write_req *req,
6430 struct ksmbd_file *fp,
6431 loff_t offset, size_t length, bool sync)
6437 data_buf = kvmalloc(length, GFP_KERNEL | __GFP_ZERO);
6441 ret = ksmbd_conn_rdma_read(work->conn, data_buf, length,
6442 (struct smb2_buffer_desc_v1 *)
6443 ((char *)req + le16_to_cpu(req->WriteChannelInfoOffset)),
6444 le16_to_cpu(req->WriteChannelInfoLength));
6450 ret = ksmbd_vfs_write(work, fp, data_buf, length, &offset, sync, &nbytes);
6459 * smb2_write() - handler for smb2 write from file
6460 * @work: smb work containing write command buffer
6462 * Return: 0 on success, otherwise error
6464 int smb2_write(struct ksmbd_work *work)
6466 struct smb2_write_req *req;
6467 struct smb2_write_rsp *rsp;
6468 struct ksmbd_file *fp = NULL;
6473 bool writethrough = false, is_rdma_channel = false;
6475 unsigned int max_write_size = work->conn->vals->max_write_size;
6477 WORK_BUFFERS(work, req, rsp);
6479 if (test_share_config_flag(work->tcon->share_conf, KSMBD_SHARE_FLAG_PIPE)) {
6480 ksmbd_debug(SMB, "IPC pipe write request\n");
6481 return smb2_write_pipe(work);
6484 offset = le64_to_cpu(req->Offset);
6485 length = le32_to_cpu(req->Length);
6487 if (req->Channel == SMB2_CHANNEL_RDMA_V1 ||
6488 req->Channel == SMB2_CHANNEL_RDMA_V1_INVALIDATE) {
6489 is_rdma_channel = true;
6490 max_write_size = get_smbd_max_read_write_size();
6491 length = le32_to_cpu(req->RemainingBytes);
6494 if (is_rdma_channel == true) {
6495 unsigned int ch_offset = le16_to_cpu(req->WriteChannelInfoOffset);
6497 if (req->Length != 0 || req->DataOffset != 0 ||
6498 ch_offset < offsetof(struct smb2_write_req, Buffer)) {
6502 err = smb2_set_remote_key_for_rdma(work,
6503 (struct smb2_buffer_desc_v1 *)
6504 ((char *)req + ch_offset),
6506 req->WriteChannelInfoLength);
6511 if (!test_tree_conn_flag(work->tcon, KSMBD_TREE_CONN_FLAG_WRITABLE)) {
6512 ksmbd_debug(SMB, "User does not have write permission\n");
6517 fp = ksmbd_lookup_fd_slow(work, req->VolatileFileId, req->PersistentFileId);
6523 if (!(fp->daccess & (FILE_WRITE_DATA_LE | FILE_READ_ATTRIBUTES_LE))) {
6524 pr_err("Not permitted to write : 0x%x\n", fp->daccess);
6529 if (length > max_write_size) {
6530 ksmbd_debug(SMB, "limiting write size to max size(%u)\n",
6536 ksmbd_debug(SMB, "flags %u\n", le32_to_cpu(req->Flags));
6537 if (le32_to_cpu(req->Flags) & SMB2_WRITEFLAG_WRITE_THROUGH)
6538 writethrough = true;
6540 if (is_rdma_channel == false) {
6541 if (le16_to_cpu(req->DataOffset) <
6542 offsetof(struct smb2_write_req, Buffer)) {
6547 data_buf = (char *)(((char *)&req->hdr.ProtocolId) +
6548 le16_to_cpu(req->DataOffset));
6550 ksmbd_debug(SMB, "filename %pD, offset %lld, len %zu\n",
6551 fp->filp, offset, length);
6552 err = ksmbd_vfs_write(work, fp, data_buf, length, &offset,
6553 writethrough, &nbytes);
6557 /* read data from the client using rdma channel, and
6560 nbytes = smb2_write_rdma_channel(work, req, fp, offset, length,
6568 rsp->StructureSize = cpu_to_le16(17);
6569 rsp->DataOffset = 0;
6571 rsp->DataLength = cpu_to_le32(nbytes);
6572 rsp->DataRemaining = 0;
6574 inc_rfc1001_len(work->response_buf, 16);
6575 ksmbd_fd_put(work, fp);
6580 rsp->hdr.Status = STATUS_FILE_LOCK_CONFLICT;
6581 else if (err == -ENOSPC || err == -EFBIG)
6582 rsp->hdr.Status = STATUS_DISK_FULL;
6583 else if (err == -ENOENT)
6584 rsp->hdr.Status = STATUS_FILE_CLOSED;
6585 else if (err == -EACCES)
6586 rsp->hdr.Status = STATUS_ACCESS_DENIED;
6587 else if (err == -ESHARE)
6588 rsp->hdr.Status = STATUS_SHARING_VIOLATION;
6589 else if (err == -EINVAL)
6590 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
6592 rsp->hdr.Status = STATUS_INVALID_HANDLE;
6594 smb2_set_err_rsp(work);
6595 ksmbd_fd_put(work, fp);
6600 * smb2_flush() - handler for smb2 flush file - fsync
6601 * @work: smb work containing flush command buffer
6603 * Return: 0 on success, otherwise error
6605 int smb2_flush(struct ksmbd_work *work)
6607 struct smb2_flush_req *req;
6608 struct smb2_flush_rsp *rsp;
6611 WORK_BUFFERS(work, req, rsp);
6613 ksmbd_debug(SMB, "SMB2_FLUSH called for fid %llu\n", req->VolatileFileId);
6615 err = ksmbd_vfs_fsync(work, req->VolatileFileId, req->PersistentFileId);
6619 rsp->StructureSize = cpu_to_le16(4);
6621 inc_rfc1001_len(work->response_buf, 4);
6626 rsp->hdr.Status = STATUS_INVALID_HANDLE;
6627 smb2_set_err_rsp(work);
6634 * smb2_cancel() - handler for smb2 cancel command
6635 * @work: smb work containing cancel command buffer
6637 * Return: 0 on success, otherwise error
6639 int smb2_cancel(struct ksmbd_work *work)
6641 struct ksmbd_conn *conn = work->conn;
6642 struct smb2_hdr *hdr = smb2_get_msg(work->request_buf);
6643 struct smb2_hdr *chdr;
6644 struct ksmbd_work *cancel_work = NULL, *iter;
6645 struct list_head *command_list;
6647 ksmbd_debug(SMB, "smb2 cancel called on mid %llu, async flags 0x%x\n",
6648 hdr->MessageId, hdr->Flags);
6650 if (hdr->Flags & SMB2_FLAGS_ASYNC_COMMAND) {
6651 command_list = &conn->async_requests;
6653 spin_lock(&conn->request_lock);
6654 list_for_each_entry(iter, command_list,
6655 async_request_entry) {
6656 chdr = smb2_get_msg(iter->request_buf);
6658 if (iter->async_id !=
6659 le64_to_cpu(hdr->Id.AsyncId))
6663 "smb2 with AsyncId %llu cancelled command = 0x%x\n",
6664 le64_to_cpu(hdr->Id.AsyncId),
6665 le16_to_cpu(chdr->Command));
6669 spin_unlock(&conn->request_lock);
6671 command_list = &conn->requests;
6673 spin_lock(&conn->request_lock);
6674 list_for_each_entry(iter, command_list, request_entry) {
6675 chdr = smb2_get_msg(iter->request_buf);
6677 if (chdr->MessageId != hdr->MessageId ||
6682 "smb2 with mid %llu cancelled command = 0x%x\n",
6683 le64_to_cpu(hdr->MessageId),
6684 le16_to_cpu(chdr->Command));
6688 spin_unlock(&conn->request_lock);
6692 cancel_work->state = KSMBD_WORK_CANCELLED;
6693 if (cancel_work->cancel_fn)
6694 cancel_work->cancel_fn(cancel_work->cancel_argv);
6697 /* For SMB2_CANCEL command itself send no response*/
6698 work->send_no_response = 1;
6702 struct file_lock *smb_flock_init(struct file *f)
6704 struct file_lock *fl;
6706 fl = locks_alloc_lock();
6710 locks_init_lock(fl);
6713 fl->fl_pid = current->tgid;
6715 fl->fl_flags = FL_POSIX;
6717 fl->fl_lmops = NULL;
6723 static int smb2_set_flock_flags(struct file_lock *flock, int flags)
6727 /* Checking for wrong flag combination during lock request*/
6729 case SMB2_LOCKFLAG_SHARED:
6730 ksmbd_debug(SMB, "received shared request\n");
6732 flock->fl_type = F_RDLCK;
6733 flock->fl_flags |= FL_SLEEP;
6735 case SMB2_LOCKFLAG_EXCLUSIVE:
6736 ksmbd_debug(SMB, "received exclusive request\n");
6738 flock->fl_type = F_WRLCK;
6739 flock->fl_flags |= FL_SLEEP;
6741 case SMB2_LOCKFLAG_SHARED | SMB2_LOCKFLAG_FAIL_IMMEDIATELY:
6743 "received shared & fail immediately request\n");
6745 flock->fl_type = F_RDLCK;
6747 case SMB2_LOCKFLAG_EXCLUSIVE | SMB2_LOCKFLAG_FAIL_IMMEDIATELY:
6749 "received exclusive & fail immediately request\n");
6751 flock->fl_type = F_WRLCK;
6753 case SMB2_LOCKFLAG_UNLOCK:
6754 ksmbd_debug(SMB, "received unlock request\n");
6755 flock->fl_type = F_UNLCK;
6763 static struct ksmbd_lock *smb2_lock_init(struct file_lock *flock,
6764 unsigned int cmd, int flags,
6765 struct list_head *lock_list)
6767 struct ksmbd_lock *lock;
6769 lock = kzalloc(sizeof(struct ksmbd_lock), GFP_KERNEL);
6775 lock->start = flock->fl_start;
6776 lock->end = flock->fl_end;
6777 lock->flags = flags;
6778 if (lock->start == lock->end)
6780 INIT_LIST_HEAD(&lock->clist);
6781 INIT_LIST_HEAD(&lock->flist);
6782 INIT_LIST_HEAD(&lock->llist);
6783 list_add_tail(&lock->llist, lock_list);
6788 static void smb2_remove_blocked_lock(void **argv)
6790 struct file_lock *flock = (struct file_lock *)argv[0];
6792 ksmbd_vfs_posix_lock_unblock(flock);
6793 wake_up(&flock->fl_wait);
6796 static inline bool lock_defer_pending(struct file_lock *fl)
6798 /* check pending lock waiters */
6799 return waitqueue_active(&fl->fl_wait);
6803 * smb2_lock() - handler for smb2 file lock command
6804 * @work: smb work containing lock command buffer
6806 * Return: 0 on success, otherwise error
6808 int smb2_lock(struct ksmbd_work *work)
6810 struct smb2_lock_req *req = smb2_get_msg(work->request_buf);
6811 struct smb2_lock_rsp *rsp = smb2_get_msg(work->response_buf);
6812 struct smb2_lock_element *lock_ele;
6813 struct ksmbd_file *fp = NULL;
6814 struct file_lock *flock = NULL;
6815 struct file *filp = NULL;
6819 int err = -EIO, i, rc = 0;
6820 u64 lock_start, lock_length;
6821 struct ksmbd_lock *smb_lock = NULL, *cmp_lock, *tmp, *tmp2;
6822 struct ksmbd_conn *conn;
6824 LIST_HEAD(lock_list);
6825 LIST_HEAD(rollback_list);
6828 ksmbd_debug(SMB, "Received lock request\n");
6829 fp = ksmbd_lookup_fd_slow(work, req->VolatileFileId, req->PersistentFileId);
6831 ksmbd_debug(SMB, "Invalid file id for lock : %llu\n", req->VolatileFileId);
6837 lock_count = le16_to_cpu(req->LockCount);
6838 lock_ele = req->locks;
6840 ksmbd_debug(SMB, "lock count is %d\n", lock_count);
6846 for (i = 0; i < lock_count; i++) {
6847 flags = le32_to_cpu(lock_ele[i].Flags);
6849 flock = smb_flock_init(filp);
6853 cmd = smb2_set_flock_flags(flock, flags);
6855 lock_start = le64_to_cpu(lock_ele[i].Offset);
6856 lock_length = le64_to_cpu(lock_ele[i].Length);
6857 if (lock_start > U64_MAX - lock_length) {
6858 pr_err("Invalid lock range requested\n");
6859 rsp->hdr.Status = STATUS_INVALID_LOCK_RANGE;
6860 locks_free_lock(flock);
6864 if (lock_start > OFFSET_MAX)
6865 flock->fl_start = OFFSET_MAX;
6867 flock->fl_start = lock_start;
6869 lock_length = le64_to_cpu(lock_ele[i].Length);
6870 if (lock_length > OFFSET_MAX - flock->fl_start)
6871 lock_length = OFFSET_MAX - flock->fl_start;
6873 flock->fl_end = flock->fl_start + lock_length;
6875 if (flock->fl_end < flock->fl_start) {
6877 "the end offset(%llx) is smaller than the start offset(%llx)\n",
6878 flock->fl_end, flock->fl_start);
6879 rsp->hdr.Status = STATUS_INVALID_LOCK_RANGE;
6880 locks_free_lock(flock);
6884 /* Check conflict locks in one request */
6885 list_for_each_entry(cmp_lock, &lock_list, llist) {
6886 if (cmp_lock->fl->fl_start <= flock->fl_start &&
6887 cmp_lock->fl->fl_end >= flock->fl_end) {
6888 if (cmp_lock->fl->fl_type != F_UNLCK &&
6889 flock->fl_type != F_UNLCK) {
6890 pr_err("conflict two locks in one request\n");
6892 locks_free_lock(flock);
6898 smb_lock = smb2_lock_init(flock, cmd, flags, &lock_list);
6901 locks_free_lock(flock);
6906 list_for_each_entry_safe(smb_lock, tmp, &lock_list, llist) {
6907 if (smb_lock->cmd < 0) {
6912 if (!(smb_lock->flags & SMB2_LOCKFLAG_MASK)) {
6917 if ((prior_lock & (SMB2_LOCKFLAG_EXCLUSIVE | SMB2_LOCKFLAG_SHARED) &&
6918 smb_lock->flags & SMB2_LOCKFLAG_UNLOCK) ||
6919 (prior_lock == SMB2_LOCKFLAG_UNLOCK &&
6920 !(smb_lock->flags & SMB2_LOCKFLAG_UNLOCK))) {
6925 prior_lock = smb_lock->flags;
6927 if (!(smb_lock->flags & SMB2_LOCKFLAG_UNLOCK) &&
6928 !(smb_lock->flags & SMB2_LOCKFLAG_FAIL_IMMEDIATELY))
6932 /* check locks in connection list */
6933 read_lock(&conn_list_lock);
6934 list_for_each_entry(conn, &conn_list, conns_list) {
6935 spin_lock(&conn->llist_lock);
6936 list_for_each_entry_safe(cmp_lock, tmp2, &conn->lock_list, clist) {
6937 if (file_inode(cmp_lock->fl->fl_file) !=
6938 file_inode(smb_lock->fl->fl_file))
6941 if (smb_lock->fl->fl_type == F_UNLCK) {
6942 if (cmp_lock->fl->fl_file == smb_lock->fl->fl_file &&
6943 cmp_lock->start == smb_lock->start &&
6944 cmp_lock->end == smb_lock->end &&
6945 !lock_defer_pending(cmp_lock->fl)) {
6947 list_del(&cmp_lock->flist);
6948 list_del(&cmp_lock->clist);
6949 spin_unlock(&conn->llist_lock);
6950 read_unlock(&conn_list_lock);
6952 locks_free_lock(cmp_lock->fl);
6959 if (cmp_lock->fl->fl_file == smb_lock->fl->fl_file) {
6960 if (smb_lock->flags & SMB2_LOCKFLAG_SHARED)
6963 if (cmp_lock->flags & SMB2_LOCKFLAG_SHARED)
6967 /* check zero byte lock range */
6968 if (cmp_lock->zero_len && !smb_lock->zero_len &&
6969 cmp_lock->start > smb_lock->start &&
6970 cmp_lock->start < smb_lock->end) {
6971 spin_unlock(&conn->llist_lock);
6972 read_unlock(&conn_list_lock);
6973 pr_err("previous lock conflict with zero byte lock range\n");
6977 if (smb_lock->zero_len && !cmp_lock->zero_len &&
6978 smb_lock->start > cmp_lock->start &&
6979 smb_lock->start < cmp_lock->end) {
6980 spin_unlock(&conn->llist_lock);
6981 read_unlock(&conn_list_lock);
6982 pr_err("current lock conflict with zero byte lock range\n");
6986 if (((cmp_lock->start <= smb_lock->start &&
6987 cmp_lock->end > smb_lock->start) ||
6988 (cmp_lock->start < smb_lock->end &&
6989 cmp_lock->end >= smb_lock->end)) &&
6990 !cmp_lock->zero_len && !smb_lock->zero_len) {
6991 spin_unlock(&conn->llist_lock);
6992 read_unlock(&conn_list_lock);
6993 pr_err("Not allow lock operation on exclusive lock range\n");
6997 spin_unlock(&conn->llist_lock);
6999 read_unlock(&conn_list_lock);
7001 if (smb_lock->fl->fl_type == F_UNLCK && nolock) {
7002 pr_err("Try to unlock nolocked range\n");
7003 rsp->hdr.Status = STATUS_RANGE_NOT_LOCKED;
7008 if (smb_lock->zero_len) {
7013 flock = smb_lock->fl;
7014 list_del(&smb_lock->llist);
7016 rc = vfs_lock_file(filp, smb_lock->cmd, flock, NULL);
7018 if (flags & SMB2_LOCKFLAG_UNLOCK) {
7020 ksmbd_debug(SMB, "File unlocked\n");
7021 } else if (rc == -ENOENT) {
7022 rsp->hdr.Status = STATUS_NOT_LOCKED;
7025 locks_free_lock(flock);
7028 if (rc == FILE_LOCK_DEFERRED) {
7032 "would have to wait for getting lock\n");
7033 spin_lock(&work->conn->llist_lock);
7034 list_add_tail(&smb_lock->clist,
7035 &work->conn->lock_list);
7036 spin_unlock(&work->conn->llist_lock);
7037 list_add(&smb_lock->llist, &rollback_list);
7039 argv = kmalloc(sizeof(void *), GFP_KERNEL);
7046 rc = setup_async_work(work,
7047 smb2_remove_blocked_lock,
7053 spin_lock(&fp->f_lock);
7054 list_add(&work->fp_entry, &fp->blocked_works);
7055 spin_unlock(&fp->f_lock);
7057 smb2_send_interim_resp(work, STATUS_PENDING);
7059 ksmbd_vfs_posix_lock_wait(flock);
7061 if (work->state != KSMBD_WORK_ACTIVE) {
7062 list_del(&smb_lock->llist);
7063 spin_lock(&work->conn->llist_lock);
7064 list_del(&smb_lock->clist);
7065 spin_unlock(&work->conn->llist_lock);
7066 locks_free_lock(flock);
7068 if (work->state == KSMBD_WORK_CANCELLED) {
7069 spin_lock(&fp->f_lock);
7070 list_del(&work->fp_entry);
7071 spin_unlock(&fp->f_lock);
7075 smb2_send_interim_resp(work,
7077 work->send_no_response = 1;
7080 init_smb2_rsp_hdr(work);
7081 smb2_set_err_rsp(work);
7083 STATUS_RANGE_NOT_LOCKED;
7088 list_del(&smb_lock->llist);
7089 spin_lock(&work->conn->llist_lock);
7090 list_del(&smb_lock->clist);
7091 spin_unlock(&work->conn->llist_lock);
7093 spin_lock(&fp->f_lock);
7094 list_del(&work->fp_entry);
7095 spin_unlock(&fp->f_lock);
7098 spin_lock(&work->conn->llist_lock);
7099 list_add_tail(&smb_lock->clist,
7100 &work->conn->lock_list);
7101 list_add_tail(&smb_lock->flist,
7103 spin_unlock(&work->conn->llist_lock);
7104 list_add(&smb_lock->llist, &rollback_list);
7105 ksmbd_debug(SMB, "successful in taking lock\n");
7112 if (atomic_read(&fp->f_ci->op_count) > 1)
7113 smb_break_all_oplock(work, fp);
7115 rsp->StructureSize = cpu_to_le16(4);
7116 ksmbd_debug(SMB, "successful in taking lock\n");
7117 rsp->hdr.Status = STATUS_SUCCESS;
7119 inc_rfc1001_len(work->response_buf, 4);
7120 ksmbd_fd_put(work, fp);
7124 list_for_each_entry_safe(smb_lock, tmp, &lock_list, llist) {
7125 locks_free_lock(smb_lock->fl);
7126 list_del(&smb_lock->llist);
7130 list_for_each_entry_safe(smb_lock, tmp, &rollback_list, llist) {
7131 struct file_lock *rlock = NULL;
7133 rlock = smb_flock_init(filp);
7134 rlock->fl_type = F_UNLCK;
7135 rlock->fl_start = smb_lock->start;
7136 rlock->fl_end = smb_lock->end;
7138 rc = vfs_lock_file(filp, F_SETLK, rlock, NULL);
7140 pr_err("rollback unlock fail : %d\n", rc);
7142 list_del(&smb_lock->llist);
7143 spin_lock(&work->conn->llist_lock);
7144 if (!list_empty(&smb_lock->flist))
7145 list_del(&smb_lock->flist);
7146 list_del(&smb_lock->clist);
7147 spin_unlock(&work->conn->llist_lock);
7149 locks_free_lock(smb_lock->fl);
7150 locks_free_lock(rlock);
7154 ksmbd_debug(SMB, "failed in taking lock(flags : %x), err : %d\n", flags, err);
7156 if (!rsp->hdr.Status) {
7158 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
7159 else if (err == -ENOMEM)
7160 rsp->hdr.Status = STATUS_INSUFFICIENT_RESOURCES;
7161 else if (err == -ENOENT)
7162 rsp->hdr.Status = STATUS_FILE_CLOSED;
7164 rsp->hdr.Status = STATUS_LOCK_NOT_GRANTED;
7167 smb2_set_err_rsp(work);
7168 ksmbd_fd_put(work, fp);
7172 static int fsctl_copychunk(struct ksmbd_work *work,
7173 struct copychunk_ioctl_req *ci_req,
7174 unsigned int cnt_code,
7175 unsigned int input_count,
7176 unsigned long long volatile_id,
7177 unsigned long long persistent_id,
7178 struct smb2_ioctl_rsp *rsp)
7180 struct copychunk_ioctl_rsp *ci_rsp;
7181 struct ksmbd_file *src_fp = NULL, *dst_fp = NULL;
7182 struct srv_copychunk *chunks;
7183 unsigned int i, chunk_count, chunk_count_written = 0;
7184 unsigned int chunk_size_written = 0;
7185 loff_t total_size_written = 0;
7188 ci_rsp = (struct copychunk_ioctl_rsp *)&rsp->Buffer[0];
7190 rsp->VolatileFileId = volatile_id;
7191 rsp->PersistentFileId = persistent_id;
7192 ci_rsp->ChunksWritten =
7193 cpu_to_le32(ksmbd_server_side_copy_max_chunk_count());
7194 ci_rsp->ChunkBytesWritten =
7195 cpu_to_le32(ksmbd_server_side_copy_max_chunk_size());
7196 ci_rsp->TotalBytesWritten =
7197 cpu_to_le32(ksmbd_server_side_copy_max_total_size());
7199 chunks = (struct srv_copychunk *)&ci_req->Chunks[0];
7200 chunk_count = le32_to_cpu(ci_req->ChunkCount);
7201 if (chunk_count == 0)
7203 total_size_written = 0;
7205 /* verify the SRV_COPYCHUNK_COPY packet */
7206 if (chunk_count > ksmbd_server_side_copy_max_chunk_count() ||
7207 input_count < offsetof(struct copychunk_ioctl_req, Chunks) +
7208 chunk_count * sizeof(struct srv_copychunk)) {
7209 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
7213 for (i = 0; i < chunk_count; i++) {
7214 if (le32_to_cpu(chunks[i].Length) == 0 ||
7215 le32_to_cpu(chunks[i].Length) > ksmbd_server_side_copy_max_chunk_size())
7217 total_size_written += le32_to_cpu(chunks[i].Length);
7220 if (i < chunk_count ||
7221 total_size_written > ksmbd_server_side_copy_max_total_size()) {
7222 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
7226 src_fp = ksmbd_lookup_foreign_fd(work,
7227 le64_to_cpu(ci_req->ResumeKey[0]));
7228 dst_fp = ksmbd_lookup_fd_slow(work, volatile_id, persistent_id);
7231 src_fp->persistent_id != le64_to_cpu(ci_req->ResumeKey[1])) {
7232 rsp->hdr.Status = STATUS_OBJECT_NAME_NOT_FOUND;
7237 rsp->hdr.Status = STATUS_FILE_CLOSED;
7242 * FILE_READ_DATA should only be included in
7243 * the FSCTL_COPYCHUNK case
7245 if (cnt_code == FSCTL_COPYCHUNK &&
7246 !(dst_fp->daccess & (FILE_READ_DATA_LE | FILE_GENERIC_READ_LE))) {
7247 rsp->hdr.Status = STATUS_ACCESS_DENIED;
7251 ret = ksmbd_vfs_copy_file_ranges(work, src_fp, dst_fp,
7252 chunks, chunk_count,
7253 &chunk_count_written,
7254 &chunk_size_written,
7255 &total_size_written);
7258 rsp->hdr.Status = STATUS_ACCESS_DENIED;
7260 rsp->hdr.Status = STATUS_FILE_LOCK_CONFLICT;
7261 else if (ret == -EBADF)
7262 rsp->hdr.Status = STATUS_INVALID_HANDLE;
7263 else if (ret == -EFBIG || ret == -ENOSPC)
7264 rsp->hdr.Status = STATUS_DISK_FULL;
7265 else if (ret == -EINVAL)
7266 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
7267 else if (ret == -EISDIR)
7268 rsp->hdr.Status = STATUS_FILE_IS_A_DIRECTORY;
7269 else if (ret == -E2BIG)
7270 rsp->hdr.Status = STATUS_INVALID_VIEW_SIZE;
7272 rsp->hdr.Status = STATUS_UNEXPECTED_IO_ERROR;
7275 ci_rsp->ChunksWritten = cpu_to_le32(chunk_count_written);
7276 ci_rsp->ChunkBytesWritten = cpu_to_le32(chunk_size_written);
7277 ci_rsp->TotalBytesWritten = cpu_to_le32(total_size_written);
7279 ksmbd_fd_put(work, src_fp);
7280 ksmbd_fd_put(work, dst_fp);
7284 static __be32 idev_ipv4_address(struct in_device *idev)
7288 struct in_ifaddr *ifa;
7291 in_dev_for_each_ifa_rcu(ifa, idev) {
7292 if (ifa->ifa_flags & IFA_F_SECONDARY)
7295 addr = ifa->ifa_address;
7302 static int fsctl_query_iface_info_ioctl(struct ksmbd_conn *conn,
7303 struct smb2_ioctl_rsp *rsp,
7304 unsigned int out_buf_len)
7306 struct network_interface_info_ioctl_rsp *nii_rsp = NULL;
7308 struct net_device *netdev;
7309 struct sockaddr_storage_rsp *sockaddr_storage;
7311 unsigned long long speed;
7314 for_each_netdev(&init_net, netdev) {
7315 bool ipv4_set = false;
7317 if (netdev->type == ARPHRD_LOOPBACK)
7320 flags = dev_get_flags(netdev);
7321 if (!(flags & IFF_RUNNING))
7325 nbytes + sizeof(struct network_interface_info_ioctl_rsp)) {
7330 nii_rsp = (struct network_interface_info_ioctl_rsp *)
7331 &rsp->Buffer[nbytes];
7332 nii_rsp->IfIndex = cpu_to_le32(netdev->ifindex);
7334 nii_rsp->Capability = 0;
7335 if (netdev->real_num_tx_queues > 1)
7336 nii_rsp->Capability |= cpu_to_le32(RSS_CAPABLE);
7337 if (ksmbd_rdma_capable_netdev(netdev))
7338 nii_rsp->Capability |= cpu_to_le32(RDMA_CAPABLE);
7340 nii_rsp->Next = cpu_to_le32(152);
7341 nii_rsp->Reserved = 0;
7343 if (netdev->ethtool_ops->get_link_ksettings) {
7344 struct ethtool_link_ksettings cmd;
7346 netdev->ethtool_ops->get_link_ksettings(netdev, &cmd);
7347 speed = cmd.base.speed;
7349 ksmbd_debug(SMB, "%s %s\n", netdev->name,
7350 "speed is unknown, defaulting to 1Gb/sec");
7355 nii_rsp->LinkSpeed = cpu_to_le64(speed);
7357 sockaddr_storage = (struct sockaddr_storage_rsp *)
7358 nii_rsp->SockAddr_Storage;
7359 memset(sockaddr_storage, 0, 128);
7362 struct in_device *idev;
7364 sockaddr_storage->Family = cpu_to_le16(INTERNETWORK);
7365 sockaddr_storage->addr4.Port = 0;
7367 idev = __in_dev_get_rtnl(netdev);
7370 sockaddr_storage->addr4.IPv4address =
7371 idev_ipv4_address(idev);
7372 nbytes += sizeof(struct network_interface_info_ioctl_rsp);
7376 struct inet6_dev *idev6;
7377 struct inet6_ifaddr *ifa;
7378 __u8 *ipv6_addr = sockaddr_storage->addr6.IPv6address;
7380 sockaddr_storage->Family = cpu_to_le16(INTERNETWORKV6);
7381 sockaddr_storage->addr6.Port = 0;
7382 sockaddr_storage->addr6.FlowInfo = 0;
7384 idev6 = __in6_dev_get(netdev);
7388 list_for_each_entry(ifa, &idev6->addr_list, if_list) {
7389 if (ifa->flags & (IFA_F_TENTATIVE |
7392 memcpy(ipv6_addr, ifa->addr.s6_addr, 16);
7395 sockaddr_storage->addr6.ScopeId = 0;
7396 nbytes += sizeof(struct network_interface_info_ioctl_rsp);
7401 /* zero if this is last one */
7405 rsp->PersistentFileId = SMB2_NO_FID;
7406 rsp->VolatileFileId = SMB2_NO_FID;
7410 static int fsctl_validate_negotiate_info(struct ksmbd_conn *conn,
7411 struct validate_negotiate_info_req *neg_req,
7412 struct validate_negotiate_info_rsp *neg_rsp,
7413 unsigned int in_buf_len)
7418 if (in_buf_len < offsetof(struct validate_negotiate_info_req, Dialects) +
7419 le16_to_cpu(neg_req->DialectCount) * sizeof(__le16))
7422 dialect = ksmbd_lookup_dialect_by_id(neg_req->Dialects,
7423 neg_req->DialectCount);
7424 if (dialect == BAD_PROT_ID || dialect != conn->dialect) {
7429 if (strncmp(neg_req->Guid, conn->ClientGUID, SMB2_CLIENT_GUID_SIZE)) {
7434 if (le16_to_cpu(neg_req->SecurityMode) != conn->cli_sec_mode) {
7439 if (le32_to_cpu(neg_req->Capabilities) != conn->cli_cap) {
7444 neg_rsp->Capabilities = cpu_to_le32(conn->vals->capabilities);
7445 memset(neg_rsp->Guid, 0, SMB2_CLIENT_GUID_SIZE);
7446 neg_rsp->SecurityMode = cpu_to_le16(conn->srv_sec_mode);
7447 neg_rsp->Dialect = cpu_to_le16(conn->dialect);
7452 static int fsctl_query_allocated_ranges(struct ksmbd_work *work, u64 id,
7453 struct file_allocated_range_buffer *qar_req,
7454 struct file_allocated_range_buffer *qar_rsp,
7455 unsigned int in_count, unsigned int *out_count)
7457 struct ksmbd_file *fp;
7458 loff_t start, length;
7465 fp = ksmbd_lookup_fd_fast(work, id);
7469 start = le64_to_cpu(qar_req->file_offset);
7470 length = le64_to_cpu(qar_req->length);
7472 ret = ksmbd_vfs_fqar_lseek(fp, start, length,
7473 qar_rsp, in_count, out_count);
7474 if (ret && ret != -E2BIG)
7477 ksmbd_fd_put(work, fp);
7481 static int fsctl_pipe_transceive(struct ksmbd_work *work, u64 id,
7482 unsigned int out_buf_len,
7483 struct smb2_ioctl_req *req,
7484 struct smb2_ioctl_rsp *rsp)
7486 struct ksmbd_rpc_command *rpc_resp;
7487 char *data_buf = (char *)&req->Buffer[0];
7490 rpc_resp = ksmbd_rpc_ioctl(work->sess, id, data_buf,
7491 le32_to_cpu(req->InputCount));
7493 if (rpc_resp->flags == KSMBD_RPC_SOME_NOT_MAPPED) {
7495 * set STATUS_SOME_NOT_MAPPED response
7496 * for unknown domain sid.
7498 rsp->hdr.Status = STATUS_SOME_NOT_MAPPED;
7499 } else if (rpc_resp->flags == KSMBD_RPC_ENOTIMPLEMENTED) {
7500 rsp->hdr.Status = STATUS_NOT_SUPPORTED;
7502 } else if (rpc_resp->flags != KSMBD_RPC_OK) {
7503 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
7507 nbytes = rpc_resp->payload_sz;
7508 if (rpc_resp->payload_sz > out_buf_len) {
7509 rsp->hdr.Status = STATUS_BUFFER_OVERFLOW;
7510 nbytes = out_buf_len;
7513 if (!rpc_resp->payload_sz) {
7515 STATUS_UNEXPECTED_IO_ERROR;
7519 memcpy((char *)rsp->Buffer, rpc_resp->payload, nbytes);
7526 static inline int fsctl_set_sparse(struct ksmbd_work *work, u64 id,
7527 struct file_sparse *sparse)
7529 struct ksmbd_file *fp;
7530 struct user_namespace *user_ns;
7534 fp = ksmbd_lookup_fd_fast(work, id);
7537 user_ns = file_mnt_user_ns(fp->filp);
7539 old_fattr = fp->f_ci->m_fattr;
7540 if (sparse->SetSparse)
7541 fp->f_ci->m_fattr |= FILE_ATTRIBUTE_SPARSE_FILE_LE;
7543 fp->f_ci->m_fattr &= ~FILE_ATTRIBUTE_SPARSE_FILE_LE;
7545 if (fp->f_ci->m_fattr != old_fattr &&
7546 test_share_config_flag(work->tcon->share_conf,
7547 KSMBD_SHARE_FLAG_STORE_DOS_ATTRS)) {
7548 struct xattr_dos_attrib da;
7550 ret = ksmbd_vfs_get_dos_attrib_xattr(user_ns,
7551 fp->filp->f_path.dentry, &da);
7555 da.attr = le32_to_cpu(fp->f_ci->m_fattr);
7556 ret = ksmbd_vfs_set_dos_attrib_xattr(user_ns,
7557 fp->filp->f_path.dentry, &da);
7559 fp->f_ci->m_fattr = old_fattr;
7563 ksmbd_fd_put(work, fp);
7567 static int fsctl_request_resume_key(struct ksmbd_work *work,
7568 struct smb2_ioctl_req *req,
7569 struct resume_key_ioctl_rsp *key_rsp)
7571 struct ksmbd_file *fp;
7573 fp = ksmbd_lookup_fd_slow(work, req->VolatileFileId, req->PersistentFileId);
7577 memset(key_rsp, 0, sizeof(*key_rsp));
7578 key_rsp->ResumeKey[0] = req->VolatileFileId;
7579 key_rsp->ResumeKey[1] = req->PersistentFileId;
7580 ksmbd_fd_put(work, fp);
7586 * smb2_ioctl() - handler for smb2 ioctl command
7587 * @work: smb work containing ioctl command buffer
7589 * Return: 0 on success, otherwise error
7591 int smb2_ioctl(struct ksmbd_work *work)
7593 struct smb2_ioctl_req *req;
7594 struct smb2_ioctl_rsp *rsp;
7595 unsigned int cnt_code, nbytes = 0, out_buf_len, in_buf_len;
7596 u64 id = KSMBD_NO_FID;
7597 struct ksmbd_conn *conn = work->conn;
7600 if (work->next_smb2_rcv_hdr_off) {
7601 req = ksmbd_req_buf_next(work);
7602 rsp = ksmbd_resp_buf_next(work);
7603 if (!has_file_id(req->VolatileFileId)) {
7604 ksmbd_debug(SMB, "Compound request set FID = %llu\n",
7605 work->compound_fid);
7606 id = work->compound_fid;
7609 req = smb2_get_msg(work->request_buf);
7610 rsp = smb2_get_msg(work->response_buf);
7613 if (!has_file_id(id))
7614 id = req->VolatileFileId;
7616 if (req->Flags != cpu_to_le32(SMB2_0_IOCTL_IS_FSCTL)) {
7617 rsp->hdr.Status = STATUS_NOT_SUPPORTED;
7621 cnt_code = le32_to_cpu(req->CtlCode);
7622 ret = smb2_calc_max_out_buf_len(work, 48,
7623 le32_to_cpu(req->MaxOutputResponse));
7625 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
7628 out_buf_len = (unsigned int)ret;
7629 in_buf_len = le32_to_cpu(req->InputCount);
7632 case FSCTL_DFS_GET_REFERRALS:
7633 case FSCTL_DFS_GET_REFERRALS_EX:
7634 /* Not support DFS yet */
7635 rsp->hdr.Status = STATUS_FS_DRIVER_REQUIRED;
7637 case FSCTL_CREATE_OR_GET_OBJECT_ID:
7639 struct file_object_buf_type1_ioctl_rsp *obj_buf;
7641 nbytes = sizeof(struct file_object_buf_type1_ioctl_rsp);
7642 obj_buf = (struct file_object_buf_type1_ioctl_rsp *)
7646 * TODO: This is dummy implementation to pass smbtorture
7647 * Need to check correct response later
7649 memset(obj_buf->ObjectId, 0x0, 16);
7650 memset(obj_buf->BirthVolumeId, 0x0, 16);
7651 memset(obj_buf->BirthObjectId, 0x0, 16);
7652 memset(obj_buf->DomainId, 0x0, 16);
7656 case FSCTL_PIPE_TRANSCEIVE:
7657 out_buf_len = min_t(u32, KSMBD_IPC_MAX_PAYLOAD, out_buf_len);
7658 nbytes = fsctl_pipe_transceive(work, id, out_buf_len, req, rsp);
7660 case FSCTL_VALIDATE_NEGOTIATE_INFO:
7661 if (conn->dialect < SMB30_PROT_ID) {
7666 if (in_buf_len < offsetof(struct validate_negotiate_info_req,
7672 if (out_buf_len < sizeof(struct validate_negotiate_info_rsp)) {
7677 ret = fsctl_validate_negotiate_info(conn,
7678 (struct validate_negotiate_info_req *)&req->Buffer[0],
7679 (struct validate_negotiate_info_rsp *)&rsp->Buffer[0],
7684 nbytes = sizeof(struct validate_negotiate_info_rsp);
7685 rsp->PersistentFileId = SMB2_NO_FID;
7686 rsp->VolatileFileId = SMB2_NO_FID;
7688 case FSCTL_QUERY_NETWORK_INTERFACE_INFO:
7689 ret = fsctl_query_iface_info_ioctl(conn, rsp, out_buf_len);
7694 case FSCTL_REQUEST_RESUME_KEY:
7695 if (out_buf_len < sizeof(struct resume_key_ioctl_rsp)) {
7700 ret = fsctl_request_resume_key(work, req,
7701 (struct resume_key_ioctl_rsp *)&rsp->Buffer[0]);
7704 rsp->PersistentFileId = req->PersistentFileId;
7705 rsp->VolatileFileId = req->VolatileFileId;
7706 nbytes = sizeof(struct resume_key_ioctl_rsp);
7708 case FSCTL_COPYCHUNK:
7709 case FSCTL_COPYCHUNK_WRITE:
7710 if (!test_tree_conn_flag(work->tcon, KSMBD_TREE_CONN_FLAG_WRITABLE)) {
7712 "User does not have write permission\n");
7717 if (in_buf_len < sizeof(struct copychunk_ioctl_req)) {
7722 if (out_buf_len < sizeof(struct copychunk_ioctl_rsp)) {
7727 nbytes = sizeof(struct copychunk_ioctl_rsp);
7728 rsp->VolatileFileId = req->VolatileFileId;
7729 rsp->PersistentFileId = req->PersistentFileId;
7730 fsctl_copychunk(work,
7731 (struct copychunk_ioctl_req *)&req->Buffer[0],
7732 le32_to_cpu(req->CtlCode),
7733 le32_to_cpu(req->InputCount),
7734 req->VolatileFileId,
7735 req->PersistentFileId,
7738 case FSCTL_SET_SPARSE:
7739 if (in_buf_len < sizeof(struct file_sparse)) {
7744 ret = fsctl_set_sparse(work, id,
7745 (struct file_sparse *)&req->Buffer[0]);
7749 case FSCTL_SET_ZERO_DATA:
7751 struct file_zero_data_information *zero_data;
7752 struct ksmbd_file *fp;
7753 loff_t off, len, bfz;
7755 if (!test_tree_conn_flag(work->tcon, KSMBD_TREE_CONN_FLAG_WRITABLE)) {
7757 "User does not have write permission\n");
7762 if (in_buf_len < sizeof(struct file_zero_data_information)) {
7768 (struct file_zero_data_information *)&req->Buffer[0];
7770 off = le64_to_cpu(zero_data->FileOffset);
7771 bfz = le64_to_cpu(zero_data->BeyondFinalZero);
7779 fp = ksmbd_lookup_fd_fast(work, id);
7785 ret = ksmbd_vfs_zero_data(work, fp, off, len);
7786 ksmbd_fd_put(work, fp);
7792 case FSCTL_QUERY_ALLOCATED_RANGES:
7793 if (in_buf_len < sizeof(struct file_allocated_range_buffer)) {
7798 ret = fsctl_query_allocated_ranges(work, id,
7799 (struct file_allocated_range_buffer *)&req->Buffer[0],
7800 (struct file_allocated_range_buffer *)&rsp->Buffer[0],
7802 sizeof(struct file_allocated_range_buffer), &nbytes);
7803 if (ret == -E2BIG) {
7804 rsp->hdr.Status = STATUS_BUFFER_OVERFLOW;
7805 } else if (ret < 0) {
7810 nbytes *= sizeof(struct file_allocated_range_buffer);
7812 case FSCTL_GET_REPARSE_POINT:
7814 struct reparse_data_buffer *reparse_ptr;
7815 struct ksmbd_file *fp;
7817 reparse_ptr = (struct reparse_data_buffer *)&rsp->Buffer[0];
7818 fp = ksmbd_lookup_fd_fast(work, id);
7820 pr_err("not found fp!!\n");
7825 reparse_ptr->ReparseTag =
7826 smb2_get_reparse_tag_special_file(file_inode(fp->filp)->i_mode);
7827 reparse_ptr->ReparseDataLength = 0;
7828 ksmbd_fd_put(work, fp);
7829 nbytes = sizeof(struct reparse_data_buffer);
7832 case FSCTL_DUPLICATE_EXTENTS_TO_FILE:
7834 struct ksmbd_file *fp_in, *fp_out = NULL;
7835 struct duplicate_extents_to_file *dup_ext;
7836 loff_t src_off, dst_off, length, cloned;
7838 if (in_buf_len < sizeof(struct duplicate_extents_to_file)) {
7843 dup_ext = (struct duplicate_extents_to_file *)&req->Buffer[0];
7845 fp_in = ksmbd_lookup_fd_slow(work, dup_ext->VolatileFileHandle,
7846 dup_ext->PersistentFileHandle);
7848 pr_err("not found file handle in duplicate extent to file\n");
7853 fp_out = ksmbd_lookup_fd_fast(work, id);
7855 pr_err("not found fp\n");
7860 src_off = le64_to_cpu(dup_ext->SourceFileOffset);
7861 dst_off = le64_to_cpu(dup_ext->TargetFileOffset);
7862 length = le64_to_cpu(dup_ext->ByteCount);
7864 * XXX: It is not clear if FSCTL_DUPLICATE_EXTENTS_TO_FILE
7865 * should fall back to vfs_copy_file_range(). This could be
7866 * beneficial when re-exporting nfs/smb mount, but note that
7867 * this can result in partial copy that returns an error status.
7868 * If/when FSCTL_DUPLICATE_EXTENTS_TO_FILE_EX is implemented,
7869 * fall back to vfs_copy_file_range(), should be avoided when
7870 * the flag DUPLICATE_EXTENTS_DATA_EX_SOURCE_ATOMIC is set.
7872 cloned = vfs_clone_file_range(fp_in->filp, src_off,
7873 fp_out->filp, dst_off, length, 0);
7874 if (cloned == -EXDEV || cloned == -EOPNOTSUPP) {
7877 } else if (cloned != length) {
7878 cloned = vfs_copy_file_range(fp_in->filp, src_off,
7879 fp_out->filp, dst_off,
7881 if (cloned != length) {
7890 ksmbd_fd_put(work, fp_in);
7891 ksmbd_fd_put(work, fp_out);
7897 ksmbd_debug(SMB, "not implemented yet ioctl command 0x%x\n",
7903 rsp->CtlCode = cpu_to_le32(cnt_code);
7904 rsp->InputCount = cpu_to_le32(0);
7905 rsp->InputOffset = cpu_to_le32(112);
7906 rsp->OutputOffset = cpu_to_le32(112);
7907 rsp->OutputCount = cpu_to_le32(nbytes);
7908 rsp->StructureSize = cpu_to_le16(49);
7909 rsp->Reserved = cpu_to_le16(0);
7910 rsp->Flags = cpu_to_le32(0);
7911 rsp->Reserved2 = cpu_to_le32(0);
7912 inc_rfc1001_len(work->response_buf, 48 + nbytes);
7918 rsp->hdr.Status = STATUS_ACCESS_DENIED;
7919 else if (ret == -ENOENT)
7920 rsp->hdr.Status = STATUS_OBJECT_NAME_NOT_FOUND;
7921 else if (ret == -EOPNOTSUPP)
7922 rsp->hdr.Status = STATUS_NOT_SUPPORTED;
7923 else if (ret == -ENOSPC)
7924 rsp->hdr.Status = STATUS_BUFFER_TOO_SMALL;
7925 else if (ret < 0 || rsp->hdr.Status == 0)
7926 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
7927 smb2_set_err_rsp(work);
7932 * smb20_oplock_break_ack() - handler for smb2.0 oplock break command
7933 * @work: smb work containing oplock break command buffer
7937 static void smb20_oplock_break_ack(struct ksmbd_work *work)
7939 struct smb2_oplock_break *req = smb2_get_msg(work->request_buf);
7940 struct smb2_oplock_break *rsp = smb2_get_msg(work->response_buf);
7941 struct ksmbd_file *fp;
7942 struct oplock_info *opinfo = NULL;
7945 u64 volatile_id, persistent_id;
7946 char req_oplevel = 0, rsp_oplevel = 0;
7947 unsigned int oplock_change_type;
7949 volatile_id = req->VolatileFid;
7950 persistent_id = req->PersistentFid;
7951 req_oplevel = req->OplockLevel;
7952 ksmbd_debug(OPLOCK, "v_id %llu, p_id %llu request oplock level %d\n",
7953 volatile_id, persistent_id, req_oplevel);
7955 fp = ksmbd_lookup_fd_slow(work, volatile_id, persistent_id);
7957 rsp->hdr.Status = STATUS_FILE_CLOSED;
7958 smb2_set_err_rsp(work);
7962 opinfo = opinfo_get(fp);
7964 pr_err("unexpected null oplock_info\n");
7965 rsp->hdr.Status = STATUS_INVALID_OPLOCK_PROTOCOL;
7966 smb2_set_err_rsp(work);
7967 ksmbd_fd_put(work, fp);
7971 if (opinfo->level == SMB2_OPLOCK_LEVEL_NONE) {
7972 rsp->hdr.Status = STATUS_INVALID_OPLOCK_PROTOCOL;
7976 if (opinfo->op_state == OPLOCK_STATE_NONE) {
7977 ksmbd_debug(SMB, "unexpected oplock state 0x%x\n", opinfo->op_state);
7978 rsp->hdr.Status = STATUS_UNSUCCESSFUL;
7982 if ((opinfo->level == SMB2_OPLOCK_LEVEL_EXCLUSIVE ||
7983 opinfo->level == SMB2_OPLOCK_LEVEL_BATCH) &&
7984 (req_oplevel != SMB2_OPLOCK_LEVEL_II &&
7985 req_oplevel != SMB2_OPLOCK_LEVEL_NONE)) {
7986 err = STATUS_INVALID_OPLOCK_PROTOCOL;
7987 oplock_change_type = OPLOCK_WRITE_TO_NONE;
7988 } else if (opinfo->level == SMB2_OPLOCK_LEVEL_II &&
7989 req_oplevel != SMB2_OPLOCK_LEVEL_NONE) {
7990 err = STATUS_INVALID_OPLOCK_PROTOCOL;
7991 oplock_change_type = OPLOCK_READ_TO_NONE;
7992 } else if (req_oplevel == SMB2_OPLOCK_LEVEL_II ||
7993 req_oplevel == SMB2_OPLOCK_LEVEL_NONE) {
7994 err = STATUS_INVALID_DEVICE_STATE;
7995 if ((opinfo->level == SMB2_OPLOCK_LEVEL_EXCLUSIVE ||
7996 opinfo->level == SMB2_OPLOCK_LEVEL_BATCH) &&
7997 req_oplevel == SMB2_OPLOCK_LEVEL_II) {
7998 oplock_change_type = OPLOCK_WRITE_TO_READ;
7999 } else if ((opinfo->level == SMB2_OPLOCK_LEVEL_EXCLUSIVE ||
8000 opinfo->level == SMB2_OPLOCK_LEVEL_BATCH) &&
8001 req_oplevel == SMB2_OPLOCK_LEVEL_NONE) {
8002 oplock_change_type = OPLOCK_WRITE_TO_NONE;
8003 } else if (opinfo->level == SMB2_OPLOCK_LEVEL_II &&
8004 req_oplevel == SMB2_OPLOCK_LEVEL_NONE) {
8005 oplock_change_type = OPLOCK_READ_TO_NONE;
8007 oplock_change_type = 0;
8010 oplock_change_type = 0;
8013 switch (oplock_change_type) {
8014 case OPLOCK_WRITE_TO_READ:
8015 ret = opinfo_write_to_read(opinfo);
8016 rsp_oplevel = SMB2_OPLOCK_LEVEL_II;
8018 case OPLOCK_WRITE_TO_NONE:
8019 ret = opinfo_write_to_none(opinfo);
8020 rsp_oplevel = SMB2_OPLOCK_LEVEL_NONE;
8022 case OPLOCK_READ_TO_NONE:
8023 ret = opinfo_read_to_none(opinfo);
8024 rsp_oplevel = SMB2_OPLOCK_LEVEL_NONE;
8027 pr_err("unknown oplock change 0x%x -> 0x%x\n",
8028 opinfo->level, rsp_oplevel);
8032 rsp->hdr.Status = err;
8037 ksmbd_fd_put(work, fp);
8038 opinfo->op_state = OPLOCK_STATE_NONE;
8039 wake_up_interruptible_all(&opinfo->oplock_q);
8041 rsp->StructureSize = cpu_to_le16(24);
8042 rsp->OplockLevel = rsp_oplevel;
8045 rsp->VolatileFid = volatile_id;
8046 rsp->PersistentFid = persistent_id;
8047 inc_rfc1001_len(work->response_buf, 24);
8051 opinfo->op_state = OPLOCK_STATE_NONE;
8052 wake_up_interruptible_all(&opinfo->oplock_q);
8055 ksmbd_fd_put(work, fp);
8056 smb2_set_err_rsp(work);
8059 static int check_lease_state(struct lease *lease, __le32 req_state)
8061 if ((lease->new_state ==
8062 (SMB2_LEASE_READ_CACHING_LE | SMB2_LEASE_HANDLE_CACHING_LE)) &&
8063 !(req_state & SMB2_LEASE_WRITE_CACHING_LE)) {
8064 lease->new_state = req_state;
8068 if (lease->new_state == req_state)
8075 * smb21_lease_break_ack() - handler for smb2.1 lease break command
8076 * @work: smb work containing lease break command buffer
8080 static void smb21_lease_break_ack(struct ksmbd_work *work)
8082 struct ksmbd_conn *conn = work->conn;
8083 struct smb2_lease_ack *req = smb2_get_msg(work->request_buf);
8084 struct smb2_lease_ack *rsp = smb2_get_msg(work->response_buf);
8085 struct oplock_info *opinfo;
8088 unsigned int lease_change_type;
8090 struct lease *lease;
8092 ksmbd_debug(OPLOCK, "smb21 lease break, lease state(0x%x)\n",
8093 le32_to_cpu(req->LeaseState));
8094 opinfo = lookup_lease_in_table(conn, req->LeaseKey);
8096 ksmbd_debug(OPLOCK, "file not opened\n");
8097 smb2_set_err_rsp(work);
8098 rsp->hdr.Status = STATUS_UNSUCCESSFUL;
8101 lease = opinfo->o_lease;
8103 if (opinfo->op_state == OPLOCK_STATE_NONE) {
8104 pr_err("unexpected lease break state 0x%x\n",
8106 rsp->hdr.Status = STATUS_UNSUCCESSFUL;
8110 if (check_lease_state(lease, req->LeaseState)) {
8111 rsp->hdr.Status = STATUS_REQUEST_NOT_ACCEPTED;
8113 "req lease state: 0x%x, expected state: 0x%x\n",
8114 req->LeaseState, lease->new_state);
8118 if (!atomic_read(&opinfo->breaking_cnt)) {
8119 rsp->hdr.Status = STATUS_UNSUCCESSFUL;
8123 /* check for bad lease state */
8124 if (req->LeaseState &
8125 (~(SMB2_LEASE_READ_CACHING_LE | SMB2_LEASE_HANDLE_CACHING_LE))) {
8126 err = STATUS_INVALID_OPLOCK_PROTOCOL;
8127 if (lease->state & SMB2_LEASE_WRITE_CACHING_LE)
8128 lease_change_type = OPLOCK_WRITE_TO_NONE;
8130 lease_change_type = OPLOCK_READ_TO_NONE;
8131 ksmbd_debug(OPLOCK, "handle bad lease state 0x%x -> 0x%x\n",
8132 le32_to_cpu(lease->state),
8133 le32_to_cpu(req->LeaseState));
8134 } else if (lease->state == SMB2_LEASE_READ_CACHING_LE &&
8135 req->LeaseState != SMB2_LEASE_NONE_LE) {
8136 err = STATUS_INVALID_OPLOCK_PROTOCOL;
8137 lease_change_type = OPLOCK_READ_TO_NONE;
8138 ksmbd_debug(OPLOCK, "handle bad lease state 0x%x -> 0x%x\n",
8139 le32_to_cpu(lease->state),
8140 le32_to_cpu(req->LeaseState));
8142 /* valid lease state changes */
8143 err = STATUS_INVALID_DEVICE_STATE;
8144 if (req->LeaseState == SMB2_LEASE_NONE_LE) {
8145 if (lease->state & SMB2_LEASE_WRITE_CACHING_LE)
8146 lease_change_type = OPLOCK_WRITE_TO_NONE;
8148 lease_change_type = OPLOCK_READ_TO_NONE;
8149 } else if (req->LeaseState & SMB2_LEASE_READ_CACHING_LE) {
8150 if (lease->state & SMB2_LEASE_WRITE_CACHING_LE)
8151 lease_change_type = OPLOCK_WRITE_TO_READ;
8153 lease_change_type = OPLOCK_READ_HANDLE_TO_READ;
8155 lease_change_type = 0;
8159 switch (lease_change_type) {
8160 case OPLOCK_WRITE_TO_READ:
8161 ret = opinfo_write_to_read(opinfo);
8163 case OPLOCK_READ_HANDLE_TO_READ:
8164 ret = opinfo_read_handle_to_read(opinfo);
8166 case OPLOCK_WRITE_TO_NONE:
8167 ret = opinfo_write_to_none(opinfo);
8169 case OPLOCK_READ_TO_NONE:
8170 ret = opinfo_read_to_none(opinfo);
8173 ksmbd_debug(OPLOCK, "unknown lease change 0x%x -> 0x%x\n",
8174 le32_to_cpu(lease->state),
8175 le32_to_cpu(req->LeaseState));
8178 lease_state = lease->state;
8179 opinfo->op_state = OPLOCK_STATE_NONE;
8180 wake_up_interruptible_all(&opinfo->oplock_q);
8181 atomic_dec(&opinfo->breaking_cnt);
8182 wake_up_interruptible_all(&opinfo->oplock_brk);
8186 rsp->hdr.Status = err;
8190 rsp->StructureSize = cpu_to_le16(36);
8193 memcpy(rsp->LeaseKey, req->LeaseKey, 16);
8194 rsp->LeaseState = lease_state;
8195 rsp->LeaseDuration = 0;
8196 inc_rfc1001_len(work->response_buf, 36);
8200 opinfo->op_state = OPLOCK_STATE_NONE;
8201 wake_up_interruptible_all(&opinfo->oplock_q);
8202 atomic_dec(&opinfo->breaking_cnt);
8203 wake_up_interruptible_all(&opinfo->oplock_brk);
8206 smb2_set_err_rsp(work);
8210 * smb2_oplock_break() - dispatcher for smb2.0 and 2.1 oplock/lease break
8211 * @work: smb work containing oplock/lease break command buffer
8215 int smb2_oplock_break(struct ksmbd_work *work)
8217 struct smb2_oplock_break *req = smb2_get_msg(work->request_buf);
8218 struct smb2_oplock_break *rsp = smb2_get_msg(work->response_buf);
8220 switch (le16_to_cpu(req->StructureSize)) {
8221 case OP_BREAK_STRUCT_SIZE_20:
8222 smb20_oplock_break_ack(work);
8224 case OP_BREAK_STRUCT_SIZE_21:
8225 smb21_lease_break_ack(work);
8228 ksmbd_debug(OPLOCK, "invalid break cmd %d\n",
8229 le16_to_cpu(req->StructureSize));
8230 rsp->hdr.Status = STATUS_INVALID_PARAMETER;
8231 smb2_set_err_rsp(work);
8238 * smb2_notify() - handler for smb2 notify request
8239 * @work: smb work containing notify command buffer
8243 int smb2_notify(struct ksmbd_work *work)
8245 struct smb2_change_notify_req *req;
8246 struct smb2_change_notify_rsp *rsp;
8248 WORK_BUFFERS(work, req, rsp);
8250 if (work->next_smb2_rcv_hdr_off && req->hdr.NextCommand) {
8251 rsp->hdr.Status = STATUS_INTERNAL_ERROR;
8252 smb2_set_err_rsp(work);
8256 smb2_set_err_rsp(work);
8257 rsp->hdr.Status = STATUS_NOT_IMPLEMENTED;
8262 * smb2_is_sign_req() - handler for checking packet signing status
8263 * @work: smb work containing notify command buffer
8264 * @command: SMB2 command id
8266 * Return: true if packed is signed, false otherwise
8268 bool smb2_is_sign_req(struct ksmbd_work *work, unsigned int command)
8270 struct smb2_hdr *rcv_hdr2 = smb2_get_msg(work->request_buf);
8272 if ((rcv_hdr2->Flags & SMB2_FLAGS_SIGNED) &&
8273 command != SMB2_NEGOTIATE_HE &&
8274 command != SMB2_SESSION_SETUP_HE &&
8275 command != SMB2_OPLOCK_BREAK_HE)
8282 * smb2_check_sign_req() - handler for req packet sign processing
8283 * @work: smb work containing notify command buffer
8285 * Return: 1 on success, 0 otherwise
8287 int smb2_check_sign_req(struct ksmbd_work *work)
8289 struct smb2_hdr *hdr;
8290 char signature_req[SMB2_SIGNATURE_SIZE];
8291 char signature[SMB2_HMACSHA256_SIZE];
8295 hdr = smb2_get_msg(work->request_buf);
8296 if (work->next_smb2_rcv_hdr_off)
8297 hdr = ksmbd_req_buf_next(work);
8299 if (!hdr->NextCommand && !work->next_smb2_rcv_hdr_off)
8300 len = get_rfc1002_len(work->request_buf);
8301 else if (hdr->NextCommand)
8302 len = le32_to_cpu(hdr->NextCommand);
8304 len = get_rfc1002_len(work->request_buf) -
8305 work->next_smb2_rcv_hdr_off;
8307 memcpy(signature_req, hdr->Signature, SMB2_SIGNATURE_SIZE);
8308 memset(hdr->Signature, 0, SMB2_SIGNATURE_SIZE);
8310 iov[0].iov_base = (char *)&hdr->ProtocolId;
8311 iov[0].iov_len = len;
8313 if (ksmbd_sign_smb2_pdu(work->conn, work->sess->sess_key, iov, 1,
8317 if (memcmp(signature, signature_req, SMB2_SIGNATURE_SIZE)) {
8318 pr_err("bad smb2 signature\n");
8326 * smb2_set_sign_rsp() - handler for rsp packet sign processing
8327 * @work: smb work containing notify command buffer
8330 void smb2_set_sign_rsp(struct ksmbd_work *work)
8332 struct smb2_hdr *hdr;
8333 struct smb2_hdr *req_hdr;
8334 char signature[SMB2_HMACSHA256_SIZE];
8339 hdr = smb2_get_msg(work->response_buf);
8340 if (work->next_smb2_rsp_hdr_off)
8341 hdr = ksmbd_resp_buf_next(work);
8343 req_hdr = ksmbd_req_buf_next(work);
8345 if (!work->next_smb2_rsp_hdr_off) {
8346 len = get_rfc1002_len(work->response_buf);
8347 if (req_hdr->NextCommand)
8348 len = ALIGN(len, 8);
8350 len = get_rfc1002_len(work->response_buf) -
8351 work->next_smb2_rsp_hdr_off;
8352 len = ALIGN(len, 8);
8355 if (req_hdr->NextCommand)
8356 hdr->NextCommand = cpu_to_le32(len);
8358 hdr->Flags |= SMB2_FLAGS_SIGNED;
8359 memset(hdr->Signature, 0, SMB2_SIGNATURE_SIZE);
8361 iov[0].iov_base = (char *)&hdr->ProtocolId;
8362 iov[0].iov_len = len;
8364 if (work->aux_payload_sz) {
8365 iov[0].iov_len -= work->aux_payload_sz;
8367 iov[1].iov_base = work->aux_payload_buf;
8368 iov[1].iov_len = work->aux_payload_sz;
8372 if (!ksmbd_sign_smb2_pdu(work->conn, work->sess->sess_key, iov, n_vec,
8374 memcpy(hdr->Signature, signature, SMB2_SIGNATURE_SIZE);
8378 * smb3_check_sign_req() - handler for req packet sign processing
8379 * @work: smb work containing notify command buffer
8381 * Return: 1 on success, 0 otherwise
8383 int smb3_check_sign_req(struct ksmbd_work *work)
8385 struct ksmbd_conn *conn = work->conn;
8387 struct smb2_hdr *hdr;
8388 struct channel *chann;
8389 char signature_req[SMB2_SIGNATURE_SIZE];
8390 char signature[SMB2_CMACAES_SIZE];
8394 hdr = smb2_get_msg(work->request_buf);
8395 if (work->next_smb2_rcv_hdr_off)
8396 hdr = ksmbd_req_buf_next(work);
8398 if (!hdr->NextCommand && !work->next_smb2_rcv_hdr_off)
8399 len = get_rfc1002_len(work->request_buf);
8400 else if (hdr->NextCommand)
8401 len = le32_to_cpu(hdr->NextCommand);
8403 len = get_rfc1002_len(work->request_buf) -
8404 work->next_smb2_rcv_hdr_off;
8406 if (le16_to_cpu(hdr->Command) == SMB2_SESSION_SETUP_HE) {
8407 signing_key = work->sess->smb3signingkey;
8409 read_lock(&work->sess->chann_lock);
8410 chann = lookup_chann_list(work->sess, conn);
8412 read_unlock(&work->sess->chann_lock);
8415 signing_key = chann->smb3signingkey;
8416 read_unlock(&work->sess->chann_lock);
8420 pr_err("SMB3 signing key is not generated\n");
8424 memcpy(signature_req, hdr->Signature, SMB2_SIGNATURE_SIZE);
8425 memset(hdr->Signature, 0, SMB2_SIGNATURE_SIZE);
8426 iov[0].iov_base = (char *)&hdr->ProtocolId;
8427 iov[0].iov_len = len;
8429 if (ksmbd_sign_smb3_pdu(conn, signing_key, iov, 1, signature))
8432 if (memcmp(signature, signature_req, SMB2_SIGNATURE_SIZE)) {
8433 pr_err("bad smb2 signature\n");
8441 * smb3_set_sign_rsp() - handler for rsp packet sign processing
8442 * @work: smb work containing notify command buffer
8445 void smb3_set_sign_rsp(struct ksmbd_work *work)
8447 struct ksmbd_conn *conn = work->conn;
8448 struct smb2_hdr *req_hdr, *hdr;
8449 struct channel *chann;
8450 char signature[SMB2_CMACAES_SIZE];
8456 hdr = smb2_get_msg(work->response_buf);
8457 if (work->next_smb2_rsp_hdr_off)
8458 hdr = ksmbd_resp_buf_next(work);
8460 req_hdr = ksmbd_req_buf_next(work);
8462 if (!work->next_smb2_rsp_hdr_off) {
8463 len = get_rfc1002_len(work->response_buf);
8464 if (req_hdr->NextCommand)
8465 len = ALIGN(len, 8);
8467 len = get_rfc1002_len(work->response_buf) -
8468 work->next_smb2_rsp_hdr_off;
8469 len = ALIGN(len, 8);
8472 if (conn->binding == false &&
8473 le16_to_cpu(hdr->Command) == SMB2_SESSION_SETUP_HE) {
8474 signing_key = work->sess->smb3signingkey;
8476 read_lock(&work->sess->chann_lock);
8477 chann = lookup_chann_list(work->sess, work->conn);
8479 read_unlock(&work->sess->chann_lock);
8482 signing_key = chann->smb3signingkey;
8483 read_unlock(&work->sess->chann_lock);
8489 if (req_hdr->NextCommand)
8490 hdr->NextCommand = cpu_to_le32(len);
8492 hdr->Flags |= SMB2_FLAGS_SIGNED;
8493 memset(hdr->Signature, 0, SMB2_SIGNATURE_SIZE);
8494 iov[0].iov_base = (char *)&hdr->ProtocolId;
8495 iov[0].iov_len = len;
8496 if (work->aux_payload_sz) {
8497 iov[0].iov_len -= work->aux_payload_sz;
8498 iov[1].iov_base = work->aux_payload_buf;
8499 iov[1].iov_len = work->aux_payload_sz;
8503 if (!ksmbd_sign_smb3_pdu(conn, signing_key, iov, n_vec, signature))
8504 memcpy(hdr->Signature, signature, SMB2_SIGNATURE_SIZE);
8508 * smb3_preauth_hash_rsp() - handler for computing preauth hash on response
8509 * @work: smb work containing response buffer
8512 void smb3_preauth_hash_rsp(struct ksmbd_work *work)
8514 struct ksmbd_conn *conn = work->conn;
8515 struct ksmbd_session *sess = work->sess;
8516 struct smb2_hdr *req, *rsp;
8518 if (conn->dialect != SMB311_PROT_ID)
8521 WORK_BUFFERS(work, req, rsp);
8523 if (le16_to_cpu(req->Command) == SMB2_NEGOTIATE_HE &&
8525 ksmbd_gen_preauth_integrity_hash(conn, work->response_buf,
8526 conn->preauth_info->Preauth_HashValue);
8528 if (le16_to_cpu(rsp->Command) == SMB2_SESSION_SETUP_HE && sess) {
8531 if (conn->binding) {
8532 struct preauth_session *preauth_sess;
8534 preauth_sess = ksmbd_preauth_session_lookup(conn, sess->id);
8537 hash_value = preauth_sess->Preauth_HashValue;
8539 hash_value = sess->Preauth_HashValue;
8543 ksmbd_gen_preauth_integrity_hash(conn, work->response_buf,
8548 static void fill_transform_hdr(void *tr_buf, char *old_buf, __le16 cipher_type)
8550 struct smb2_transform_hdr *tr_hdr = tr_buf + 4;
8551 struct smb2_hdr *hdr = smb2_get_msg(old_buf);
8552 unsigned int orig_len = get_rfc1002_len(old_buf);
8554 /* tr_buf must be cleared by the caller */
8555 tr_hdr->ProtocolId = SMB2_TRANSFORM_PROTO_NUM;
8556 tr_hdr->OriginalMessageSize = cpu_to_le32(orig_len);
8557 tr_hdr->Flags = cpu_to_le16(TRANSFORM_FLAG_ENCRYPTED);
8558 if (cipher_type == SMB2_ENCRYPTION_AES128_GCM ||
8559 cipher_type == SMB2_ENCRYPTION_AES256_GCM)
8560 get_random_bytes(&tr_hdr->Nonce, SMB3_AES_GCM_NONCE);
8562 get_random_bytes(&tr_hdr->Nonce, SMB3_AES_CCM_NONCE);
8563 memcpy(&tr_hdr->SessionId, &hdr->SessionId, 8);
8564 inc_rfc1001_len(tr_buf, sizeof(struct smb2_transform_hdr));
8565 inc_rfc1001_len(tr_buf, orig_len);
8568 int smb3_encrypt_resp(struct ksmbd_work *work)
8570 char *buf = work->response_buf;
8573 int buf_size = 0, rq_nvec = 2 + (work->aux_payload_sz ? 1 : 0);
8575 if (ARRAY_SIZE(iov) < rq_nvec)
8578 work->tr_buf = kzalloc(sizeof(struct smb2_transform_hdr) + 4, GFP_KERNEL);
8582 /* fill transform header */
8583 fill_transform_hdr(work->tr_buf, buf, work->conn->cipher_type);
8585 iov[0].iov_base = work->tr_buf;
8586 iov[0].iov_len = sizeof(struct smb2_transform_hdr) + 4;
8587 buf_size += iov[0].iov_len - 4;
8589 iov[1].iov_base = buf + 4;
8590 iov[1].iov_len = get_rfc1002_len(buf);
8591 if (work->aux_payload_sz) {
8592 iov[1].iov_len = work->resp_hdr_sz - 4;
8594 iov[2].iov_base = work->aux_payload_buf;
8595 iov[2].iov_len = work->aux_payload_sz;
8596 buf_size += iov[2].iov_len;
8598 buf_size += iov[1].iov_len;
8599 work->resp_hdr_sz = iov[1].iov_len;
8601 rc = ksmbd_crypt_message(work, iov, rq_nvec, 1);
8605 memmove(buf, iov[1].iov_base, iov[1].iov_len);
8606 *(__be32 *)work->tr_buf = cpu_to_be32(buf_size);
8611 bool smb3_is_transform_hdr(void *buf)
8613 struct smb2_transform_hdr *trhdr = smb2_get_msg(buf);
8615 return trhdr->ProtocolId == SMB2_TRANSFORM_PROTO_NUM;
8618 int smb3_decrypt_req(struct ksmbd_work *work)
8620 struct ksmbd_session *sess;
8621 char *buf = work->request_buf;
8622 unsigned int pdu_length = get_rfc1002_len(buf);
8624 int buf_data_size = pdu_length - sizeof(struct smb2_transform_hdr);
8625 struct smb2_transform_hdr *tr_hdr = smb2_get_msg(buf);
8628 if (buf_data_size < sizeof(struct smb2_hdr)) {
8629 pr_err("Transform message is too small (%u)\n",
8631 return -ECONNABORTED;
8634 if (buf_data_size < le32_to_cpu(tr_hdr->OriginalMessageSize)) {
8635 pr_err("Transform message is broken\n");
8636 return -ECONNABORTED;
8639 sess = ksmbd_session_lookup_all(work->conn, le64_to_cpu(tr_hdr->SessionId));
8641 pr_err("invalid session id(%llx) in transform header\n",
8642 le64_to_cpu(tr_hdr->SessionId));
8643 return -ECONNABORTED;
8646 iov[0].iov_base = buf;
8647 iov[0].iov_len = sizeof(struct smb2_transform_hdr) + 4;
8648 iov[1].iov_base = buf + sizeof(struct smb2_transform_hdr) + 4;
8649 iov[1].iov_len = buf_data_size;
8650 rc = ksmbd_crypt_message(work, iov, 2, 0);
8654 memmove(buf + 4, iov[1].iov_base, buf_data_size);
8655 *(__be32 *)buf = cpu_to_be32(buf_data_size);
8660 bool smb3_11_final_sess_setup_resp(struct ksmbd_work *work)
8662 struct ksmbd_conn *conn = work->conn;
8663 struct smb2_hdr *rsp = smb2_get_msg(work->response_buf);
8665 if (conn->dialect < SMB30_PROT_ID)
8668 if (work->next_smb2_rcv_hdr_off)
8669 rsp = ksmbd_resp_buf_next(work);
8671 if (le16_to_cpu(rsp->Command) == SMB2_SESSION_SETUP_HE &&
8672 rsp->Status == STATUS_SUCCESS)