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e2f34481 NJ |
1 | // SPDX-License-Identifier: GPL-2.0-or-later |
2 | /* | |
3 | * Copyright (C) 2016 Namjae Jeon <linkinjeon@kernel.org> | |
4 | * Copyright (C) 2018 Samsung Electronics Co., Ltd. | |
5 | */ | |
6 | ||
7 | #include <linux/inetdevice.h> | |
8 | #include <net/addrconf.h> | |
9 | #include <linux/syscalls.h> | |
10 | #include <linux/namei.h> | |
11 | #include <linux/statfs.h> | |
12 | #include <linux/ethtool.h> | |
e8c06191 | 13 | #include <linux/falloc.h> |
e2f34481 NJ |
14 | |
15 | #include "glob.h" | |
16 | #include "smb2pdu.h" | |
17 | #include "smbfsctl.h" | |
18 | #include "oplock.h" | |
19 | #include "smbacl.h" | |
20 | ||
21 | #include "auth.h" | |
22 | #include "asn1.h" | |
e2f34481 NJ |
23 | #include "connection.h" |
24 | #include "transport_ipc.h" | |
25 | #include "vfs.h" | |
26 | #include "vfs_cache.h" | |
27 | #include "misc.h" | |
28 | ||
e2f34481 NJ |
29 | #include "server.h" |
30 | #include "smb_common.h" | |
31 | #include "smbstatus.h" | |
32 | #include "ksmbd_work.h" | |
33 | #include "mgmt/user_config.h" | |
34 | #include "mgmt/share_config.h" | |
35 | #include "mgmt/tree_connect.h" | |
36 | #include "mgmt/user_session.h" | |
37 | #include "mgmt/ksmbd_ida.h" | |
38 | #include "ndr.h" | |
39 | ||
40 | static void __wbuf(struct ksmbd_work *work, void **req, void **rsp) | |
41 | { | |
42 | if (work->next_smb2_rcv_hdr_off) { | |
43 | *req = REQUEST_BUF_NEXT(work); | |
44 | *rsp = RESPONSE_BUF_NEXT(work); | |
45 | } else { | |
e5066499 NJ |
46 | *req = work->request_buf; |
47 | *rsp = work->response_buf; | |
e2f34481 NJ |
48 | } |
49 | } | |
50 | ||
51 | #define WORK_BUFFERS(w, rq, rs) __wbuf((w), (void **)&(rq), (void **)&(rs)) | |
52 | ||
53 | /** | |
54 | * check_session_id() - check for valid session id in smb header | |
55 | * @conn: connection instance | |
56 | * @id: session id from smb header | |
57 | * | |
58 | * Return: 1 if valid session id, otherwise 0 | |
59 | */ | |
64b39f4a | 60 | static inline int check_session_id(struct ksmbd_conn *conn, u64 id) |
e2f34481 NJ |
61 | { |
62 | struct ksmbd_session *sess; | |
63 | ||
64 | if (id == 0 || id == -1) | |
65 | return 0; | |
66 | ||
f5a544e3 | 67 | sess = ksmbd_session_lookup_all(conn, id); |
e2f34481 NJ |
68 | if (sess) |
69 | return 1; | |
bde1694a | 70 | pr_err("Invalid user session id: %llu\n", id); |
e2f34481 NJ |
71 | return 0; |
72 | } | |
73 | ||
f5a544e3 | 74 | struct channel *lookup_chann_list(struct ksmbd_session *sess, struct ksmbd_conn *conn) |
e2f34481 NJ |
75 | { |
76 | struct channel *chann; | |
e2f34481 | 77 | |
6f3d5eee | 78 | list_for_each_entry(chann, &sess->ksmbd_chann_list, chann_list) { |
f5a544e3 | 79 | if (chann && chann->conn == conn) |
e2f34481 NJ |
80 | return chann; |
81 | } | |
82 | ||
83 | return NULL; | |
84 | } | |
85 | ||
86 | /** | |
87 | * smb2_get_ksmbd_tcon() - get tree connection information for a tree id | |
95fa1ce9 | 88 | * @work: smb work |
e2f34481 NJ |
89 | * |
90 | * Return: matching tree connection on success, otherwise error | |
91 | */ | |
92 | int smb2_get_ksmbd_tcon(struct ksmbd_work *work) | |
93 | { | |
e5066499 | 94 | struct smb2_hdr *req_hdr = work->request_buf; |
e2f34481 NJ |
95 | int tree_id; |
96 | ||
97 | work->tcon = NULL; | |
64b39f4a NJ |
98 | if (work->conn->ops->get_cmd_val(work) == SMB2_TREE_CONNECT_HE || |
99 | work->conn->ops->get_cmd_val(work) == SMB2_CANCEL_HE || | |
100 | work->conn->ops->get_cmd_val(work) == SMB2_LOGOFF_HE) { | |
e2f34481 NJ |
101 | ksmbd_debug(SMB, "skip to check tree connect request\n"); |
102 | return 0; | |
103 | } | |
104 | ||
02b68b20 | 105 | if (xa_empty(&work->sess->tree_conns)) { |
e2f34481 NJ |
106 | ksmbd_debug(SMB, "NO tree connected\n"); |
107 | return -1; | |
108 | } | |
109 | ||
110 | tree_id = le32_to_cpu(req_hdr->Id.SyncId.TreeId); | |
111 | work->tcon = ksmbd_tree_conn_lookup(work->sess, tree_id); | |
112 | if (!work->tcon) { | |
bde1694a | 113 | pr_err("Invalid tid %d\n", tree_id); |
e2f34481 NJ |
114 | return -1; |
115 | } | |
116 | ||
117 | return 1; | |
118 | } | |
119 | ||
120 | /** | |
121 | * smb2_set_err_rsp() - set error response code on smb response | |
122 | * @work: smb work containing response buffer | |
123 | */ | |
124 | void smb2_set_err_rsp(struct ksmbd_work *work) | |
125 | { | |
126 | struct smb2_err_rsp *err_rsp; | |
127 | ||
128 | if (work->next_smb2_rcv_hdr_off) | |
129 | err_rsp = RESPONSE_BUF_NEXT(work); | |
130 | else | |
e5066499 | 131 | err_rsp = work->response_buf; |
e2f34481 NJ |
132 | |
133 | if (err_rsp->hdr.Status != STATUS_STOPPED_ON_SYMLINK) { | |
134 | err_rsp->StructureSize = SMB2_ERROR_STRUCTURE_SIZE2_LE; | |
135 | err_rsp->ErrorContextCount = 0; | |
136 | err_rsp->Reserved = 0; | |
137 | err_rsp->ByteCount = 0; | |
138 | err_rsp->ErrorData[0] = 0; | |
e5066499 | 139 | inc_rfc1001_len(work->response_buf, SMB2_ERROR_STRUCTURE_SIZE2); |
e2f34481 NJ |
140 | } |
141 | } | |
142 | ||
143 | /** | |
144 | * is_smb2_neg_cmd() - is it smb2 negotiation command | |
145 | * @work: smb work containing smb header | |
146 | * | |
147 | * Return: 1 if smb2 negotiation command, otherwise 0 | |
148 | */ | |
149 | int is_smb2_neg_cmd(struct ksmbd_work *work) | |
150 | { | |
e5066499 | 151 | struct smb2_hdr *hdr = work->request_buf; |
e2f34481 NJ |
152 | |
153 | /* is it SMB2 header ? */ | |
154 | if (hdr->ProtocolId != SMB2_PROTO_NUMBER) | |
155 | return 0; | |
156 | ||
157 | /* make sure it is request not response message */ | |
158 | if (hdr->Flags & SMB2_FLAGS_SERVER_TO_REDIR) | |
159 | return 0; | |
160 | ||
161 | if (hdr->Command != SMB2_NEGOTIATE) | |
162 | return 0; | |
163 | ||
164 | return 1; | |
165 | } | |
166 | ||
167 | /** | |
168 | * is_smb2_rsp() - is it smb2 response | |
169 | * @work: smb work containing smb response buffer | |
170 | * | |
171 | * Return: 1 if smb2 response, otherwise 0 | |
172 | */ | |
173 | int is_smb2_rsp(struct ksmbd_work *work) | |
174 | { | |
e5066499 | 175 | struct smb2_hdr *hdr = work->response_buf; |
e2f34481 NJ |
176 | |
177 | /* is it SMB2 header ? */ | |
178 | if (hdr->ProtocolId != SMB2_PROTO_NUMBER) | |
179 | return 0; | |
180 | ||
181 | /* make sure it is response not request message */ | |
182 | if (!(hdr->Flags & SMB2_FLAGS_SERVER_TO_REDIR)) | |
183 | return 0; | |
184 | ||
185 | return 1; | |
186 | } | |
187 | ||
188 | /** | |
189 | * get_smb2_cmd_val() - get smb command code from smb header | |
190 | * @work: smb work containing smb request buffer | |
191 | * | |
192 | * Return: smb2 request command value | |
193 | */ | |
fc2d1b58 | 194 | u16 get_smb2_cmd_val(struct ksmbd_work *work) |
e2f34481 NJ |
195 | { |
196 | struct smb2_hdr *rcv_hdr; | |
197 | ||
198 | if (work->next_smb2_rcv_hdr_off) | |
199 | rcv_hdr = REQUEST_BUF_NEXT(work); | |
200 | else | |
e5066499 | 201 | rcv_hdr = work->request_buf; |
e2f34481 NJ |
202 | return le16_to_cpu(rcv_hdr->Command); |
203 | } | |
204 | ||
205 | /** | |
206 | * set_smb2_rsp_status() - set error response code on smb2 header | |
207 | * @work: smb work containing response buffer | |
95fa1ce9 | 208 | * @err: error response code |
e2f34481 NJ |
209 | */ |
210 | void set_smb2_rsp_status(struct ksmbd_work *work, __le32 err) | |
211 | { | |
212 | struct smb2_hdr *rsp_hdr; | |
213 | ||
214 | if (work->next_smb2_rcv_hdr_off) | |
215 | rsp_hdr = RESPONSE_BUF_NEXT(work); | |
216 | else | |
e5066499 | 217 | rsp_hdr = work->response_buf; |
e2f34481 NJ |
218 | rsp_hdr->Status = err; |
219 | smb2_set_err_rsp(work); | |
220 | } | |
221 | ||
222 | /** | |
223 | * init_smb2_neg_rsp() - initialize smb2 response for negotiate command | |
224 | * @work: smb work containing smb request buffer | |
225 | * | |
226 | * smb2 negotiate response is sent in reply of smb1 negotiate command for | |
227 | * dialect auto-negotiation. | |
228 | */ | |
229 | int init_smb2_neg_rsp(struct ksmbd_work *work) | |
230 | { | |
231 | struct smb2_hdr *rsp_hdr; | |
232 | struct smb2_negotiate_rsp *rsp; | |
233 | struct ksmbd_conn *conn = work->conn; | |
234 | ||
235 | if (conn->need_neg == false) | |
236 | return -EINVAL; | |
237 | if (!(conn->dialect >= SMB20_PROT_ID && | |
64b39f4a | 238 | conn->dialect <= SMB311_PROT_ID)) |
e2f34481 NJ |
239 | return -EINVAL; |
240 | ||
e5066499 | 241 | rsp_hdr = work->response_buf; |
e2f34481 NJ |
242 | |
243 | memset(rsp_hdr, 0, sizeof(struct smb2_hdr) + 2); | |
244 | ||
245 | rsp_hdr->smb2_buf_length = | |
246 | cpu_to_be32(HEADER_SIZE_NO_BUF_LEN(conn)); | |
247 | ||
248 | rsp_hdr->ProtocolId = SMB2_PROTO_NUMBER; | |
249 | rsp_hdr->StructureSize = SMB2_HEADER_STRUCTURE_SIZE; | |
250 | rsp_hdr->CreditRequest = cpu_to_le16(2); | |
251 | rsp_hdr->Command = SMB2_NEGOTIATE; | |
252 | rsp_hdr->Flags = (SMB2_FLAGS_SERVER_TO_REDIR); | |
253 | rsp_hdr->NextCommand = 0; | |
254 | rsp_hdr->MessageId = 0; | |
255 | rsp_hdr->Id.SyncId.ProcessId = 0; | |
256 | rsp_hdr->Id.SyncId.TreeId = 0; | |
257 | rsp_hdr->SessionId = 0; | |
258 | memset(rsp_hdr->Signature, 0, 16); | |
259 | ||
e5066499 | 260 | rsp = work->response_buf; |
e2f34481 NJ |
261 | |
262 | WARN_ON(ksmbd_conn_good(work)); | |
263 | ||
264 | rsp->StructureSize = cpu_to_le16(65); | |
265 | ksmbd_debug(SMB, "conn->dialect 0x%x\n", conn->dialect); | |
266 | rsp->DialectRevision = cpu_to_le16(conn->dialect); | |
267 | /* Not setting conn guid rsp->ServerGUID, as it | |
268 | * not used by client for identifying connection | |
269 | */ | |
270 | rsp->Capabilities = cpu_to_le32(conn->vals->capabilities); | |
271 | /* Default Max Message Size till SMB2.0, 64K*/ | |
272 | rsp->MaxTransactSize = cpu_to_le32(conn->vals->max_trans_size); | |
273 | rsp->MaxReadSize = cpu_to_le32(conn->vals->max_read_size); | |
274 | rsp->MaxWriteSize = cpu_to_le32(conn->vals->max_write_size); | |
275 | ||
276 | rsp->SystemTime = cpu_to_le64(ksmbd_systime()); | |
277 | rsp->ServerStartTime = 0; | |
278 | ||
279 | rsp->SecurityBufferOffset = cpu_to_le16(128); | |
280 | rsp->SecurityBufferLength = cpu_to_le16(AUTH_GSS_LENGTH); | |
281 | ksmbd_copy_gss_neg_header(((char *)(&rsp->hdr) + | |
282 | sizeof(rsp->hdr.smb2_buf_length)) + | |
283 | le16_to_cpu(rsp->SecurityBufferOffset)); | |
284 | inc_rfc1001_len(rsp, sizeof(struct smb2_negotiate_rsp) - | |
285 | sizeof(struct smb2_hdr) - sizeof(rsp->Buffer) + | |
286 | AUTH_GSS_LENGTH); | |
287 | rsp->SecurityMode = SMB2_NEGOTIATE_SIGNING_ENABLED_LE; | |
288 | if (server_conf.signing == KSMBD_CONFIG_OPT_MANDATORY) | |
289 | rsp->SecurityMode |= SMB2_NEGOTIATE_SIGNING_REQUIRED_LE; | |
290 | conn->use_spnego = true; | |
291 | ||
292 | ksmbd_conn_set_need_negotiate(work); | |
293 | return 0; | |
294 | } | |
295 | ||
296 | static int smb2_consume_credit_charge(struct ksmbd_work *work, | |
070fb21e | 297 | unsigned short credit_charge) |
e2f34481 NJ |
298 | { |
299 | struct ksmbd_conn *conn = work->conn; | |
300 | unsigned int rsp_credits = 1; | |
301 | ||
302 | if (!conn->total_credits) | |
303 | return 0; | |
304 | ||
305 | if (credit_charge > 0) | |
306 | rsp_credits = credit_charge; | |
307 | ||
308 | conn->total_credits -= rsp_credits; | |
309 | return rsp_credits; | |
310 | } | |
311 | ||
312 | /** | |
313 | * smb2_set_rsp_credits() - set number of credits in response buffer | |
314 | * @work: smb work containing smb response buffer | |
315 | */ | |
316 | int smb2_set_rsp_credits(struct ksmbd_work *work) | |
317 | { | |
318 | struct smb2_hdr *req_hdr = REQUEST_BUF_NEXT(work); | |
319 | struct smb2_hdr *hdr = RESPONSE_BUF_NEXT(work); | |
320 | struct ksmbd_conn *conn = work->conn; | |
321 | unsigned short credits_requested = le16_to_cpu(req_hdr->CreditRequest); | |
322 | unsigned short credit_charge = 1, credits_granted = 0; | |
323 | unsigned short aux_max, aux_credits, min_credits; | |
324 | int rsp_credit_charge; | |
325 | ||
326 | if (hdr->Command == SMB2_CANCEL) | |
327 | goto out; | |
328 | ||
329 | /* get default minimum credits by shifting maximum credits by 4 */ | |
330 | min_credits = conn->max_credits >> 4; | |
331 | ||
332 | if (conn->total_credits >= conn->max_credits) { | |
bde1694a | 333 | pr_err("Total credits overflow: %d\n", conn->total_credits); |
e2f34481 NJ |
334 | conn->total_credits = min_credits; |
335 | } | |
336 | ||
070fb21e NJ |
337 | rsp_credit_charge = |
338 | smb2_consume_credit_charge(work, le16_to_cpu(req_hdr->CreditCharge)); | |
e2f34481 NJ |
339 | if (rsp_credit_charge < 0) |
340 | return -EINVAL; | |
341 | ||
342 | hdr->CreditCharge = cpu_to_le16(rsp_credit_charge); | |
343 | ||
344 | if (credits_requested > 0) { | |
345 | aux_credits = credits_requested - 1; | |
346 | aux_max = 32; | |
347 | if (hdr->Command == SMB2_NEGOTIATE) | |
348 | aux_max = 0; | |
349 | aux_credits = (aux_credits < aux_max) ? aux_credits : aux_max; | |
350 | credits_granted = aux_credits + credit_charge; | |
351 | ||
352 | /* if credits granted per client is getting bigger than default | |
353 | * minimum credits then we should wrap it up within the limits. | |
354 | */ | |
355 | if ((conn->total_credits + credits_granted) > min_credits) | |
356 | credits_granted = min_credits - conn->total_credits; | |
357 | /* | |
358 | * TODO: Need to adjuct CreditRequest value according to | |
359 | * current cpu load | |
360 | */ | |
361 | } else if (conn->total_credits == 0) { | |
362 | credits_granted = 1; | |
363 | } | |
364 | ||
365 | conn->total_credits += credits_granted; | |
366 | work->credits_granted += credits_granted; | |
367 | ||
368 | if (!req_hdr->NextCommand) { | |
369 | /* Update CreditRequest in last request */ | |
370 | hdr->CreditRequest = cpu_to_le16(work->credits_granted); | |
371 | } | |
372 | out: | |
373 | ksmbd_debug(SMB, | |
070fb21e NJ |
374 | "credits: requested[%d] granted[%d] total_granted[%d]\n", |
375 | credits_requested, credits_granted, | |
376 | conn->total_credits); | |
e2f34481 NJ |
377 | return 0; |
378 | } | |
379 | ||
380 | /** | |
381 | * init_chained_smb2_rsp() - initialize smb2 chained response | |
382 | * @work: smb work containing smb response buffer | |
383 | */ | |
384 | static void init_chained_smb2_rsp(struct ksmbd_work *work) | |
385 | { | |
386 | struct smb2_hdr *req = REQUEST_BUF_NEXT(work); | |
387 | struct smb2_hdr *rsp = RESPONSE_BUF_NEXT(work); | |
388 | struct smb2_hdr *rsp_hdr; | |
389 | struct smb2_hdr *rcv_hdr; | |
390 | int next_hdr_offset = 0; | |
391 | int len, new_len; | |
392 | ||
393 | /* Len of this response = updated RFC len - offset of previous cmd | |
394 | * in the compound rsp | |
395 | */ | |
396 | ||
397 | /* Storing the current local FID which may be needed by subsequent | |
398 | * command in the compound request | |
399 | */ | |
400 | if (req->Command == SMB2_CREATE && rsp->Status == STATUS_SUCCESS) { | |
401 | work->compound_fid = | |
402 | le64_to_cpu(((struct smb2_create_rsp *)rsp)-> | |
403 | VolatileFileId); | |
404 | work->compound_pfid = | |
405 | le64_to_cpu(((struct smb2_create_rsp *)rsp)-> | |
406 | PersistentFileId); | |
407 | work->compound_sid = le64_to_cpu(rsp->SessionId); | |
408 | } | |
409 | ||
e5066499 | 410 | len = get_rfc1002_len(work->response_buf) - work->next_smb2_rsp_hdr_off; |
e2f34481 NJ |
411 | next_hdr_offset = le32_to_cpu(req->NextCommand); |
412 | ||
413 | new_len = ALIGN(len, 8); | |
e5066499 | 414 | inc_rfc1001_len(work->response_buf, ((sizeof(struct smb2_hdr) - 4) |
e2f34481 NJ |
415 | + new_len - len)); |
416 | rsp->NextCommand = cpu_to_le32(new_len); | |
417 | ||
418 | work->next_smb2_rcv_hdr_off += next_hdr_offset; | |
419 | work->next_smb2_rsp_hdr_off += new_len; | |
420 | ksmbd_debug(SMB, | |
070fb21e NJ |
421 | "Compound req new_len = %d rcv off = %d rsp off = %d\n", |
422 | new_len, work->next_smb2_rcv_hdr_off, | |
423 | work->next_smb2_rsp_hdr_off); | |
e2f34481 NJ |
424 | |
425 | rsp_hdr = RESPONSE_BUF_NEXT(work); | |
426 | rcv_hdr = REQUEST_BUF_NEXT(work); | |
427 | ||
428 | if (!(rcv_hdr->Flags & SMB2_FLAGS_RELATED_OPERATIONS)) { | |
429 | ksmbd_debug(SMB, "related flag should be set\n"); | |
430 | work->compound_fid = KSMBD_NO_FID; | |
431 | work->compound_pfid = KSMBD_NO_FID; | |
432 | } | |
433 | memset((char *)rsp_hdr + 4, 0, sizeof(struct smb2_hdr) + 2); | |
434 | rsp_hdr->ProtocolId = rcv_hdr->ProtocolId; | |
435 | rsp_hdr->StructureSize = SMB2_HEADER_STRUCTURE_SIZE; | |
436 | rsp_hdr->Command = rcv_hdr->Command; | |
437 | ||
438 | /* | |
439 | * Message is response. We don't grant oplock yet. | |
440 | */ | |
441 | rsp_hdr->Flags = (SMB2_FLAGS_SERVER_TO_REDIR | | |
442 | SMB2_FLAGS_RELATED_OPERATIONS); | |
443 | rsp_hdr->NextCommand = 0; | |
444 | rsp_hdr->MessageId = rcv_hdr->MessageId; | |
445 | rsp_hdr->Id.SyncId.ProcessId = rcv_hdr->Id.SyncId.ProcessId; | |
446 | rsp_hdr->Id.SyncId.TreeId = rcv_hdr->Id.SyncId.TreeId; | |
447 | rsp_hdr->SessionId = rcv_hdr->SessionId; | |
448 | memcpy(rsp_hdr->Signature, rcv_hdr->Signature, 16); | |
449 | } | |
450 | ||
451 | /** | |
452 | * is_chained_smb2_message() - check for chained command | |
453 | * @work: smb work containing smb request buffer | |
454 | * | |
455 | * Return: true if chained request, otherwise false | |
456 | */ | |
457 | bool is_chained_smb2_message(struct ksmbd_work *work) | |
458 | { | |
e5066499 | 459 | struct smb2_hdr *hdr = work->request_buf; |
e2f34481 NJ |
460 | unsigned int len; |
461 | ||
462 | if (hdr->ProtocolId != SMB2_PROTO_NUMBER) | |
463 | return false; | |
464 | ||
465 | hdr = REQUEST_BUF_NEXT(work); | |
466 | if (le32_to_cpu(hdr->NextCommand) > 0) { | |
467 | ksmbd_debug(SMB, "got SMB2 chained command\n"); | |
468 | init_chained_smb2_rsp(work); | |
469 | return true; | |
470 | } else if (work->next_smb2_rcv_hdr_off) { | |
471 | /* | |
472 | * This is last request in chained command, | |
473 | * align response to 8 byte | |
474 | */ | |
e5066499 NJ |
475 | len = ALIGN(get_rfc1002_len(work->response_buf), 8); |
476 | len = len - get_rfc1002_len(work->response_buf); | |
e2f34481 NJ |
477 | if (len) { |
478 | ksmbd_debug(SMB, "padding len %u\n", len); | |
e5066499 NJ |
479 | inc_rfc1001_len(work->response_buf, len); |
480 | if (work->aux_payload_sz) | |
e2f34481 NJ |
481 | work->aux_payload_sz += len; |
482 | } | |
483 | } | |
484 | return false; | |
485 | } | |
486 | ||
487 | /** | |
488 | * init_smb2_rsp_hdr() - initialize smb2 response | |
489 | * @work: smb work containing smb request buffer | |
490 | * | |
491 | * Return: 0 | |
492 | */ | |
493 | int init_smb2_rsp_hdr(struct ksmbd_work *work) | |
494 | { | |
e5066499 NJ |
495 | struct smb2_hdr *rsp_hdr = work->response_buf; |
496 | struct smb2_hdr *rcv_hdr = work->request_buf; | |
e2f34481 NJ |
497 | struct ksmbd_conn *conn = work->conn; |
498 | ||
499 | memset(rsp_hdr, 0, sizeof(struct smb2_hdr) + 2); | |
500 | rsp_hdr->smb2_buf_length = cpu_to_be32(HEADER_SIZE_NO_BUF_LEN(conn)); | |
501 | rsp_hdr->ProtocolId = rcv_hdr->ProtocolId; | |
502 | rsp_hdr->StructureSize = SMB2_HEADER_STRUCTURE_SIZE; | |
503 | rsp_hdr->Command = rcv_hdr->Command; | |
504 | ||
505 | /* | |
506 | * Message is response. We don't grant oplock yet. | |
507 | */ | |
508 | rsp_hdr->Flags = (SMB2_FLAGS_SERVER_TO_REDIR); | |
509 | rsp_hdr->NextCommand = 0; | |
510 | rsp_hdr->MessageId = rcv_hdr->MessageId; | |
511 | rsp_hdr->Id.SyncId.ProcessId = rcv_hdr->Id.SyncId.ProcessId; | |
512 | rsp_hdr->Id.SyncId.TreeId = rcv_hdr->Id.SyncId.TreeId; | |
513 | rsp_hdr->SessionId = rcv_hdr->SessionId; | |
514 | memcpy(rsp_hdr->Signature, rcv_hdr->Signature, 16); | |
515 | ||
516 | work->syncronous = true; | |
517 | if (work->async_id) { | |
d40012a8 | 518 | ksmbd_release_id(&conn->async_ida, work->async_id); |
e2f34481 NJ |
519 | work->async_id = 0; |
520 | } | |
521 | ||
522 | return 0; | |
523 | } | |
524 | ||
525 | /** | |
526 | * smb2_allocate_rsp_buf() - allocate smb2 response buffer | |
527 | * @work: smb work containing smb request buffer | |
528 | * | |
529 | * Return: 0 on success, otherwise -ENOMEM | |
530 | */ | |
531 | int smb2_allocate_rsp_buf(struct ksmbd_work *work) | |
532 | { | |
e5066499 | 533 | struct smb2_hdr *hdr = work->request_buf; |
e2f34481 NJ |
534 | size_t small_sz = MAX_CIFS_SMALL_BUFFER_SIZE; |
535 | size_t large_sz = work->conn->vals->max_trans_size + MAX_SMB2_HDR_SIZE; | |
536 | size_t sz = small_sz; | |
537 | int cmd = le16_to_cpu(hdr->Command); | |
538 | ||
c30f4eb8 | 539 | if (cmd == SMB2_IOCTL_HE || cmd == SMB2_QUERY_DIRECTORY_HE) |
e2f34481 | 540 | sz = large_sz; |
e2f34481 NJ |
541 | |
542 | if (cmd == SMB2_QUERY_INFO_HE) { | |
543 | struct smb2_query_info_req *req; | |
544 | ||
e5066499 | 545 | req = work->request_buf; |
e2f34481 | 546 | if (req->InfoType == SMB2_O_INFO_FILE && |
64b39f4a | 547 | (req->FileInfoClass == FILE_FULL_EA_INFORMATION || |
c30f4eb8 | 548 | req->FileInfoClass == FILE_ALL_INFORMATION)) |
e2f34481 | 549 | sz = large_sz; |
e2f34481 NJ |
550 | } |
551 | ||
552 | /* allocate large response buf for chained commands */ | |
553 | if (le32_to_cpu(hdr->NextCommand) > 0) | |
554 | sz = large_sz; | |
555 | ||
c30f4eb8 | 556 | work->response_buf = kvmalloc(sz, GFP_KERNEL | __GFP_ZERO); |
63c454f8 | 557 | if (!work->response_buf) |
e2f34481 | 558 | return -ENOMEM; |
e2f34481 NJ |
559 | |
560 | work->response_sz = sz; | |
561 | return 0; | |
562 | } | |
563 | ||
564 | /** | |
565 | * smb2_check_user_session() - check for valid session for a user | |
566 | * @work: smb work containing smb request buffer | |
567 | * | |
568 | * Return: 0 on success, otherwise error | |
569 | */ | |
570 | int smb2_check_user_session(struct ksmbd_work *work) | |
571 | { | |
e5066499 | 572 | struct smb2_hdr *req_hdr = work->request_buf; |
e2f34481 NJ |
573 | struct ksmbd_conn *conn = work->conn; |
574 | unsigned int cmd = conn->ops->get_cmd_val(work); | |
575 | unsigned long long sess_id; | |
576 | ||
577 | work->sess = NULL; | |
578 | /* | |
579 | * SMB2_ECHO, SMB2_NEGOTIATE, SMB2_SESSION_SETUP command do not | |
580 | * require a session id, so no need to validate user session's for | |
581 | * these commands. | |
582 | */ | |
583 | if (cmd == SMB2_ECHO_HE || cmd == SMB2_NEGOTIATE_HE || | |
64b39f4a | 584 | cmd == SMB2_SESSION_SETUP_HE) |
e2f34481 NJ |
585 | return 0; |
586 | ||
587 | if (!ksmbd_conn_good(work)) | |
588 | return -EINVAL; | |
589 | ||
590 | sess_id = le64_to_cpu(req_hdr->SessionId); | |
591 | /* Check for validity of user session */ | |
f5a544e3 | 592 | work->sess = ksmbd_session_lookup_all(conn, sess_id); |
e2f34481 NJ |
593 | if (work->sess) |
594 | return 1; | |
595 | ksmbd_debug(SMB, "Invalid user session, Uid %llu\n", sess_id); | |
596 | return -EINVAL; | |
597 | } | |
598 | ||
64b39f4a | 599 | static void destroy_previous_session(struct ksmbd_user *user, u64 id) |
e2f34481 NJ |
600 | { |
601 | struct ksmbd_session *prev_sess = ksmbd_session_lookup_slowpath(id); | |
602 | struct ksmbd_user *prev_user; | |
603 | ||
604 | if (!prev_sess) | |
605 | return; | |
606 | ||
607 | prev_user = prev_sess->user; | |
608 | ||
1fca8038 MM |
609 | if (!prev_user || |
610 | strcmp(user->name, prev_user->name) || | |
e2f34481 NJ |
611 | user->passkey_sz != prev_user->passkey_sz || |
612 | memcmp(user->passkey, prev_user->passkey, user->passkey_sz)) { | |
613 | put_session(prev_sess); | |
614 | return; | |
615 | } | |
616 | ||
617 | put_session(prev_sess); | |
618 | ksmbd_session_destroy(prev_sess); | |
619 | } | |
620 | ||
621 | /** | |
622 | * smb2_get_name() - get filename string from on the wire smb format | |
95fa1ce9 | 623 | * @share: ksmbd_share_config pointer |
e2f34481 NJ |
624 | * @src: source buffer |
625 | * @maxlen: maxlen of source string | |
95fa1ce9 | 626 | * @nls_table: nls_table pointer |
e2f34481 NJ |
627 | * |
628 | * Return: matching converted filename on success, otherwise error ptr | |
629 | */ | |
630 | static char * | |
64b39f4a | 631 | smb2_get_name(struct ksmbd_share_config *share, const char *src, |
070fb21e | 632 | const int maxlen, struct nls_table *local_nls) |
e2f34481 NJ |
633 | { |
634 | char *name, *unixname; | |
635 | ||
64b39f4a | 636 | name = smb_strndup_from_utf16(src, maxlen, 1, local_nls); |
e2f34481 | 637 | if (IS_ERR(name)) { |
bde1694a | 638 | pr_err("failed to get name %ld\n", PTR_ERR(name)); |
e2f34481 NJ |
639 | return name; |
640 | } | |
641 | ||
642 | /* change it to absolute unix name */ | |
643 | ksmbd_conv_path_to_unix(name); | |
644 | ksmbd_strip_last_slash(name); | |
645 | ||
646 | unixname = convert_to_unix_name(share, name); | |
647 | kfree(name); | |
648 | if (!unixname) { | |
bde1694a | 649 | pr_err("can not convert absolute name\n"); |
e2f34481 NJ |
650 | return ERR_PTR(-ENOMEM); |
651 | } | |
652 | ||
653 | ksmbd_debug(SMB, "absolute name = %s\n", unixname); | |
654 | return unixname; | |
655 | } | |
656 | ||
e2f34481 NJ |
657 | int setup_async_work(struct ksmbd_work *work, void (*fn)(void **), void **arg) |
658 | { | |
659 | struct smb2_hdr *rsp_hdr; | |
660 | struct ksmbd_conn *conn = work->conn; | |
661 | int id; | |
662 | ||
e5066499 | 663 | rsp_hdr = work->response_buf; |
e2f34481 NJ |
664 | rsp_hdr->Flags |= SMB2_FLAGS_ASYNC_COMMAND; |
665 | ||
d40012a8 | 666 | id = ksmbd_acquire_async_msg_id(&conn->async_ida); |
e2f34481 | 667 | if (id < 0) { |
bde1694a | 668 | pr_err("Failed to alloc async message id\n"); |
e2f34481 NJ |
669 | return id; |
670 | } | |
671 | work->syncronous = false; | |
672 | work->async_id = id; | |
673 | rsp_hdr->Id.AsyncId = cpu_to_le64(id); | |
674 | ||
675 | ksmbd_debug(SMB, | |
070fb21e NJ |
676 | "Send interim Response to inform async request id : %d\n", |
677 | work->async_id); | |
e2f34481 NJ |
678 | |
679 | work->cancel_fn = fn; | |
680 | work->cancel_argv = arg; | |
681 | ||
6c4e675a NJ |
682 | if (list_empty(&work->async_request_entry)) { |
683 | spin_lock(&conn->request_lock); | |
684 | list_add_tail(&work->async_request_entry, &conn->async_requests); | |
685 | spin_unlock(&conn->request_lock); | |
686 | } | |
e2f34481 NJ |
687 | |
688 | return 0; | |
689 | } | |
690 | ||
691 | void smb2_send_interim_resp(struct ksmbd_work *work, __le32 status) | |
692 | { | |
693 | struct smb2_hdr *rsp_hdr; | |
694 | ||
e5066499 | 695 | rsp_hdr = work->response_buf; |
e2f34481 NJ |
696 | smb2_set_err_rsp(work); |
697 | rsp_hdr->Status = status; | |
698 | ||
699 | work->multiRsp = 1; | |
700 | ksmbd_conn_write(work); | |
701 | rsp_hdr->Status = 0; | |
702 | work->multiRsp = 0; | |
703 | } | |
704 | ||
705 | static __le32 smb2_get_reparse_tag_special_file(umode_t mode) | |
706 | { | |
707 | if (S_ISDIR(mode) || S_ISREG(mode)) | |
708 | return 0; | |
709 | ||
710 | if (S_ISLNK(mode)) | |
711 | return IO_REPARSE_TAG_LX_SYMLINK_LE; | |
712 | else if (S_ISFIFO(mode)) | |
713 | return IO_REPARSE_TAG_LX_FIFO_LE; | |
714 | else if (S_ISSOCK(mode)) | |
715 | return IO_REPARSE_TAG_AF_UNIX_LE; | |
716 | else if (S_ISCHR(mode)) | |
717 | return IO_REPARSE_TAG_LX_CHR_LE; | |
718 | else if (S_ISBLK(mode)) | |
719 | return IO_REPARSE_TAG_LX_BLK_LE; | |
720 | ||
721 | return 0; | |
722 | } | |
723 | ||
724 | /** | |
725 | * smb2_get_dos_mode() - get file mode in dos format from unix mode | |
726 | * @stat: kstat containing file mode | |
95fa1ce9 | 727 | * @attribute: attribute flags |
e2f34481 NJ |
728 | * |
729 | * Return: converted dos mode | |
730 | */ | |
731 | static int smb2_get_dos_mode(struct kstat *stat, int attribute) | |
732 | { | |
733 | int attr = 0; | |
734 | ||
64b39f4a | 735 | if (S_ISDIR(stat->mode)) { |
e2f34481 NJ |
736 | attr = ATTR_DIRECTORY | |
737 | (attribute & (ATTR_HIDDEN | ATTR_SYSTEM)); | |
64b39f4a | 738 | } else { |
e2f34481 NJ |
739 | attr = (attribute & 0x00005137) | ATTR_ARCHIVE; |
740 | attr &= ~(ATTR_DIRECTORY); | |
741 | if (S_ISREG(stat->mode) && (server_conf.share_fake_fscaps & | |
742 | FILE_SUPPORTS_SPARSE_FILES)) | |
743 | attr |= ATTR_SPARSE; | |
744 | ||
745 | if (smb2_get_reparse_tag_special_file(stat->mode)) | |
746 | attr |= ATTR_REPARSE; | |
747 | } | |
748 | ||
749 | return attr; | |
750 | } | |
751 | ||
752 | static void build_preauth_ctxt(struct smb2_preauth_neg_context *pneg_ctxt, | |
070fb21e | 753 | __le16 hash_id) |
e2f34481 NJ |
754 | { |
755 | pneg_ctxt->ContextType = SMB2_PREAUTH_INTEGRITY_CAPABILITIES; | |
756 | pneg_ctxt->DataLength = cpu_to_le16(38); | |
757 | pneg_ctxt->HashAlgorithmCount = cpu_to_le16(1); | |
758 | pneg_ctxt->Reserved = cpu_to_le32(0); | |
759 | pneg_ctxt->SaltLength = cpu_to_le16(SMB311_SALT_SIZE); | |
760 | get_random_bytes(pneg_ctxt->Salt, SMB311_SALT_SIZE); | |
761 | pneg_ctxt->HashAlgorithms = hash_id; | |
762 | } | |
763 | ||
764 | static void build_encrypt_ctxt(struct smb2_encryption_neg_context *pneg_ctxt, | |
070fb21e | 765 | __le16 cipher_type) |
e2f34481 NJ |
766 | { |
767 | pneg_ctxt->ContextType = SMB2_ENCRYPTION_CAPABILITIES; | |
768 | pneg_ctxt->DataLength = cpu_to_le16(4); | |
769 | pneg_ctxt->Reserved = cpu_to_le32(0); | |
770 | pneg_ctxt->CipherCount = cpu_to_le16(1); | |
771 | pneg_ctxt->Ciphers[0] = cipher_type; | |
772 | } | |
773 | ||
774 | static void build_compression_ctxt(struct smb2_compression_ctx *pneg_ctxt, | |
070fb21e | 775 | __le16 comp_algo) |
e2f34481 NJ |
776 | { |
777 | pneg_ctxt->ContextType = SMB2_COMPRESSION_CAPABILITIES; | |
778 | pneg_ctxt->DataLength = | |
779 | cpu_to_le16(sizeof(struct smb2_compression_ctx) | |
780 | - sizeof(struct smb2_neg_context)); | |
781 | pneg_ctxt->Reserved = cpu_to_le32(0); | |
782 | pneg_ctxt->CompressionAlgorithmCount = cpu_to_le16(1); | |
783 | pneg_ctxt->Reserved1 = cpu_to_le32(0); | |
784 | pneg_ctxt->CompressionAlgorithms[0] = comp_algo; | |
785 | } | |
786 | ||
64b39f4a | 787 | static void build_posix_ctxt(struct smb2_posix_neg_context *pneg_ctxt) |
e2f34481 NJ |
788 | { |
789 | pneg_ctxt->ContextType = SMB2_POSIX_EXTENSIONS_AVAILABLE; | |
790 | pneg_ctxt->DataLength = cpu_to_le16(POSIX_CTXT_DATA_LEN); | |
791 | /* SMB2_CREATE_TAG_POSIX is "0x93AD25509CB411E7B42383DE968BCD7C" */ | |
792 | pneg_ctxt->Name[0] = 0x93; | |
793 | pneg_ctxt->Name[1] = 0xAD; | |
794 | pneg_ctxt->Name[2] = 0x25; | |
795 | pneg_ctxt->Name[3] = 0x50; | |
796 | pneg_ctxt->Name[4] = 0x9C; | |
797 | pneg_ctxt->Name[5] = 0xB4; | |
798 | pneg_ctxt->Name[6] = 0x11; | |
799 | pneg_ctxt->Name[7] = 0xE7; | |
800 | pneg_ctxt->Name[8] = 0xB4; | |
801 | pneg_ctxt->Name[9] = 0x23; | |
802 | pneg_ctxt->Name[10] = 0x83; | |
803 | pneg_ctxt->Name[11] = 0xDE; | |
804 | pneg_ctxt->Name[12] = 0x96; | |
805 | pneg_ctxt->Name[13] = 0x8B; | |
806 | pneg_ctxt->Name[14] = 0xCD; | |
807 | pneg_ctxt->Name[15] = 0x7C; | |
808 | } | |
809 | ||
64b39f4a | 810 | static void assemble_neg_contexts(struct ksmbd_conn *conn, |
070fb21e | 811 | struct smb2_negotiate_rsp *rsp) |
e2f34481 NJ |
812 | { |
813 | /* +4 is to account for the RFC1001 len field */ | |
814 | char *pneg_ctxt = (char *)rsp + | |
815 | le32_to_cpu(rsp->NegotiateContextOffset) + 4; | |
816 | int neg_ctxt_cnt = 1; | |
817 | int ctxt_size; | |
818 | ||
819 | ksmbd_debug(SMB, | |
070fb21e | 820 | "assemble SMB2_PREAUTH_INTEGRITY_CAPABILITIES context\n"); |
e2f34481 | 821 | build_preauth_ctxt((struct smb2_preauth_neg_context *)pneg_ctxt, |
070fb21e | 822 | conn->preauth_info->Preauth_HashId); |
e2f34481 NJ |
823 | rsp->NegotiateContextCount = cpu_to_le16(neg_ctxt_cnt); |
824 | inc_rfc1001_len(rsp, AUTH_GSS_PADDING); | |
825 | ctxt_size = sizeof(struct smb2_preauth_neg_context); | |
826 | /* Round to 8 byte boundary */ | |
827 | pneg_ctxt += round_up(sizeof(struct smb2_preauth_neg_context), 8); | |
828 | ||
829 | if (conn->cipher_type) { | |
830 | ctxt_size = round_up(ctxt_size, 8); | |
831 | ksmbd_debug(SMB, | |
070fb21e | 832 | "assemble SMB2_ENCRYPTION_CAPABILITIES context\n"); |
64b39f4a | 833 | build_encrypt_ctxt((struct smb2_encryption_neg_context *)pneg_ctxt, |
070fb21e | 834 | conn->cipher_type); |
e2f34481 NJ |
835 | rsp->NegotiateContextCount = cpu_to_le16(++neg_ctxt_cnt); |
836 | ctxt_size += sizeof(struct smb2_encryption_neg_context); | |
837 | /* Round to 8 byte boundary */ | |
838 | pneg_ctxt += | |
839 | round_up(sizeof(struct smb2_encryption_neg_context), | |
840 | 8); | |
841 | } | |
842 | ||
843 | if (conn->compress_algorithm) { | |
844 | ctxt_size = round_up(ctxt_size, 8); | |
845 | ksmbd_debug(SMB, | |
070fb21e | 846 | "assemble SMB2_COMPRESSION_CAPABILITIES context\n"); |
e2f34481 NJ |
847 | /* Temporarily set to SMB3_COMPRESS_NONE */ |
848 | build_compression_ctxt((struct smb2_compression_ctx *)pneg_ctxt, | |
070fb21e | 849 | conn->compress_algorithm); |
e2f34481 NJ |
850 | rsp->NegotiateContextCount = cpu_to_le16(++neg_ctxt_cnt); |
851 | ctxt_size += sizeof(struct smb2_compression_ctx); | |
852 | /* Round to 8 byte boundary */ | |
853 | pneg_ctxt += round_up(sizeof(struct smb2_compression_ctx), 8); | |
854 | } | |
855 | ||
856 | if (conn->posix_ext_supported) { | |
857 | ctxt_size = round_up(ctxt_size, 8); | |
858 | ksmbd_debug(SMB, | |
070fb21e | 859 | "assemble SMB2_POSIX_EXTENSIONS_AVAILABLE context\n"); |
e2f34481 NJ |
860 | build_posix_ctxt((struct smb2_posix_neg_context *)pneg_ctxt); |
861 | rsp->NegotiateContextCount = cpu_to_le16(++neg_ctxt_cnt); | |
862 | ctxt_size += sizeof(struct smb2_posix_neg_context); | |
863 | } | |
864 | ||
865 | inc_rfc1001_len(rsp, ctxt_size); | |
866 | } | |
867 | ||
64b39f4a | 868 | static __le32 decode_preauth_ctxt(struct ksmbd_conn *conn, |
070fb21e | 869 | struct smb2_preauth_neg_context *pneg_ctxt) |
e2f34481 NJ |
870 | { |
871 | __le32 err = STATUS_NO_PREAUTH_INTEGRITY_HASH_OVERLAP; | |
872 | ||
070fb21e | 873 | if (pneg_ctxt->HashAlgorithms == SMB2_PREAUTH_INTEGRITY_SHA512) { |
e2f34481 NJ |
874 | conn->preauth_info->Preauth_HashId = |
875 | SMB2_PREAUTH_INTEGRITY_SHA512; | |
876 | err = STATUS_SUCCESS; | |
877 | } | |
878 | ||
879 | return err; | |
880 | } | |
881 | ||
882 | static int decode_encrypt_ctxt(struct ksmbd_conn *conn, | |
070fb21e | 883 | struct smb2_encryption_neg_context *pneg_ctxt) |
e2f34481 NJ |
884 | { |
885 | int i; | |
886 | int cph_cnt = le16_to_cpu(pneg_ctxt->CipherCount); | |
887 | ||
888 | conn->cipher_type = 0; | |
889 | ||
890 | if (!(server_conf.flags & KSMBD_GLOBAL_FLAG_SMB2_ENCRYPTION)) | |
891 | goto out; | |
892 | ||
893 | for (i = 0; i < cph_cnt; i++) { | |
894 | if (pneg_ctxt->Ciphers[i] == SMB2_ENCRYPTION_AES128_GCM || | |
5a0ca770 NJ |
895 | pneg_ctxt->Ciphers[i] == SMB2_ENCRYPTION_AES128_CCM || |
896 | pneg_ctxt->Ciphers[i] == SMB2_ENCRYPTION_AES256_CCM || | |
897 | pneg_ctxt->Ciphers[i] == SMB2_ENCRYPTION_AES256_GCM) { | |
e2f34481 | 898 | ksmbd_debug(SMB, "Cipher ID = 0x%x\n", |
070fb21e | 899 | pneg_ctxt->Ciphers[i]); |
e2f34481 NJ |
900 | conn->cipher_type = pneg_ctxt->Ciphers[i]; |
901 | break; | |
902 | } | |
903 | } | |
904 | ||
905 | out: | |
906 | /* | |
907 | * Return encrypt context size in request. | |
908 | * So need to plus extra number of ciphers size. | |
909 | */ | |
910 | return sizeof(struct smb2_encryption_neg_context) + | |
911 | ((cph_cnt - 1) * 2); | |
912 | } | |
913 | ||
914 | static int decode_compress_ctxt(struct ksmbd_conn *conn, | |
070fb21e | 915 | struct smb2_compression_ctx *pneg_ctxt) |
e2f34481 NJ |
916 | { |
917 | int algo_cnt = le16_to_cpu(pneg_ctxt->CompressionAlgorithmCount); | |
918 | ||
919 | conn->compress_algorithm = SMB3_COMPRESS_NONE; | |
920 | ||
921 | /* | |
922 | * Return compression context size in request. | |
923 | * So need to plus extra number of CompressionAlgorithms size. | |
924 | */ | |
925 | return sizeof(struct smb2_encryption_neg_context) + | |
926 | ((algo_cnt - 1) * 2); | |
927 | } | |
928 | ||
929 | static __le32 deassemble_neg_contexts(struct ksmbd_conn *conn, | |
070fb21e | 930 | struct smb2_negotiate_req *req) |
e2f34481 NJ |
931 | { |
932 | int i = 0; | |
933 | __le32 status = 0; | |
934 | /* +4 is to account for the RFC1001 len field */ | |
935 | char *pneg_ctxt = (char *)req + | |
936 | le32_to_cpu(req->NegotiateContextOffset) + 4; | |
937 | __le16 *ContextType = (__le16 *)pneg_ctxt; | |
938 | int neg_ctxt_cnt = le16_to_cpu(req->NegotiateContextCount); | |
939 | int ctxt_size; | |
940 | ||
941 | ksmbd_debug(SMB, "negotiate context count = %d\n", neg_ctxt_cnt); | |
942 | status = STATUS_INVALID_PARAMETER; | |
943 | while (i++ < neg_ctxt_cnt) { | |
944 | if (*ContextType == SMB2_PREAUTH_INTEGRITY_CAPABILITIES) { | |
945 | ksmbd_debug(SMB, | |
070fb21e | 946 | "deassemble SMB2_PREAUTH_INTEGRITY_CAPABILITIES context\n"); |
e2f34481 NJ |
947 | if (conn->preauth_info->Preauth_HashId) |
948 | break; | |
949 | ||
950 | status = decode_preauth_ctxt(conn, | |
070fb21e | 951 | (struct smb2_preauth_neg_context *)pneg_ctxt); |
64b39f4a | 952 | pneg_ctxt += DIV_ROUND_UP(sizeof(struct smb2_preauth_neg_context), 8) * 8; |
e2f34481 NJ |
953 | } else if (*ContextType == SMB2_ENCRYPTION_CAPABILITIES) { |
954 | ksmbd_debug(SMB, | |
070fb21e | 955 | "deassemble SMB2_ENCRYPTION_CAPABILITIES context\n"); |
e2f34481 NJ |
956 | if (conn->cipher_type) |
957 | break; | |
958 | ||
959 | ctxt_size = decode_encrypt_ctxt(conn, | |
64b39f4a | 960 | (struct smb2_encryption_neg_context *)pneg_ctxt); |
e2f34481 NJ |
961 | pneg_ctxt += DIV_ROUND_UP(ctxt_size, 8) * 8; |
962 | } else if (*ContextType == SMB2_COMPRESSION_CAPABILITIES) { | |
963 | ksmbd_debug(SMB, | |
070fb21e | 964 | "deassemble SMB2_COMPRESSION_CAPABILITIES context\n"); |
e2f34481 NJ |
965 | if (conn->compress_algorithm) |
966 | break; | |
967 | ||
968 | ctxt_size = decode_compress_ctxt(conn, | |
10268f7d | 969 | (struct smb2_compression_ctx *)pneg_ctxt); |
e2f34481 NJ |
970 | pneg_ctxt += DIV_ROUND_UP(ctxt_size, 8) * 8; |
971 | } else if (*ContextType == SMB2_NETNAME_NEGOTIATE_CONTEXT_ID) { | |
972 | ksmbd_debug(SMB, | |
070fb21e | 973 | "deassemble SMB2_NETNAME_NEGOTIATE_CONTEXT_ID context\n"); |
e2f34481 | 974 | ctxt_size = sizeof(struct smb2_netname_neg_context); |
64b39f4a | 975 | ctxt_size += DIV_ROUND_UP(le16_to_cpu(((struct smb2_netname_neg_context *) |
070fb21e | 976 | pneg_ctxt)->DataLength), 8) * 8; |
e2f34481 NJ |
977 | pneg_ctxt += ctxt_size; |
978 | } else if (*ContextType == SMB2_POSIX_EXTENSIONS_AVAILABLE) { | |
979 | ksmbd_debug(SMB, | |
070fb21e | 980 | "deassemble SMB2_POSIX_EXTENSIONS_AVAILABLE context\n"); |
e2f34481 | 981 | conn->posix_ext_supported = true; |
64b39f4a | 982 | pneg_ctxt += DIV_ROUND_UP(sizeof(struct smb2_posix_neg_context), 8) * 8; |
e2f34481 NJ |
983 | } |
984 | ContextType = (__le16 *)pneg_ctxt; | |
985 | ||
986 | if (status != STATUS_SUCCESS) | |
987 | break; | |
988 | } | |
989 | return status; | |
990 | } | |
991 | ||
992 | /** | |
993 | * smb2_handle_negotiate() - handler for smb2 negotiate command | |
994 | * @work: smb work containing smb request buffer | |
995 | * | |
996 | * Return: 0 | |
997 | */ | |
998 | int smb2_handle_negotiate(struct ksmbd_work *work) | |
999 | { | |
1000 | struct ksmbd_conn *conn = work->conn; | |
e5066499 NJ |
1001 | struct smb2_negotiate_req *req = work->request_buf; |
1002 | struct smb2_negotiate_rsp *rsp = work->response_buf; | |
e2f34481 NJ |
1003 | int rc = 0; |
1004 | __le32 status; | |
1005 | ||
1006 | ksmbd_debug(SMB, "Received negotiate request\n"); | |
1007 | conn->need_neg = false; | |
1008 | if (ksmbd_conn_good(work)) { | |
bde1694a | 1009 | pr_err("conn->tcp_status is already in CifsGood State\n"); |
e2f34481 NJ |
1010 | work->send_no_response = 1; |
1011 | return rc; | |
1012 | } | |
1013 | ||
1014 | if (req->DialectCount == 0) { | |
bde1694a | 1015 | pr_err("malformed packet\n"); |
e2f34481 NJ |
1016 | rsp->hdr.Status = STATUS_INVALID_PARAMETER; |
1017 | rc = -EINVAL; | |
1018 | goto err_out; | |
1019 | } | |
1020 | ||
1021 | conn->cli_cap = le32_to_cpu(req->Capabilities); | |
1022 | switch (conn->dialect) { | |
1023 | case SMB311_PROT_ID: | |
1024 | conn->preauth_info = | |
1025 | kzalloc(sizeof(struct preauth_integrity_info), | |
070fb21e | 1026 | GFP_KERNEL); |
e2f34481 NJ |
1027 | if (!conn->preauth_info) { |
1028 | rc = -ENOMEM; | |
1029 | rsp->hdr.Status = STATUS_INVALID_PARAMETER; | |
1030 | goto err_out; | |
1031 | } | |
1032 | ||
1033 | status = deassemble_neg_contexts(conn, req); | |
1034 | if (status != STATUS_SUCCESS) { | |
bde1694a NJ |
1035 | pr_err("deassemble_neg_contexts error(0x%x)\n", |
1036 | status); | |
e2f34481 NJ |
1037 | rsp->hdr.Status = status; |
1038 | rc = -EINVAL; | |
1039 | goto err_out; | |
1040 | } | |
1041 | ||
1042 | rc = init_smb3_11_server(conn); | |
1043 | if (rc < 0) { | |
1044 | rsp->hdr.Status = STATUS_INVALID_PARAMETER; | |
1045 | goto err_out; | |
1046 | } | |
1047 | ||
1048 | ksmbd_gen_preauth_integrity_hash(conn, | |
070fb21e NJ |
1049 | work->request_buf, |
1050 | conn->preauth_info->Preauth_HashValue); | |
e2f34481 NJ |
1051 | rsp->NegotiateContextOffset = |
1052 | cpu_to_le32(OFFSET_OF_NEG_CONTEXT); | |
1053 | assemble_neg_contexts(conn, rsp); | |
1054 | break; | |
1055 | case SMB302_PROT_ID: | |
1056 | init_smb3_02_server(conn); | |
1057 | break; | |
1058 | case SMB30_PROT_ID: | |
1059 | init_smb3_0_server(conn); | |
1060 | break; | |
1061 | case SMB21_PROT_ID: | |
1062 | init_smb2_1_server(conn); | |
1063 | break; | |
1064 | case SMB20_PROT_ID: | |
1065 | rc = init_smb2_0_server(conn); | |
1066 | if (rc) { | |
1067 | rsp->hdr.Status = STATUS_NOT_SUPPORTED; | |
1068 | goto err_out; | |
1069 | } | |
1070 | break; | |
1071 | case SMB2X_PROT_ID: | |
1072 | case BAD_PROT_ID: | |
1073 | default: | |
1074 | ksmbd_debug(SMB, "Server dialect :0x%x not supported\n", | |
070fb21e | 1075 | conn->dialect); |
e2f34481 NJ |
1076 | rsp->hdr.Status = STATUS_NOT_SUPPORTED; |
1077 | rc = -EINVAL; | |
1078 | goto err_out; | |
1079 | } | |
1080 | rsp->Capabilities = cpu_to_le32(conn->vals->capabilities); | |
1081 | ||
1082 | /* For stats */ | |
1083 | conn->connection_type = conn->dialect; | |
1084 | ||
1085 | rsp->MaxTransactSize = cpu_to_le32(conn->vals->max_trans_size); | |
1086 | rsp->MaxReadSize = cpu_to_le32(conn->vals->max_read_size); | |
1087 | rsp->MaxWriteSize = cpu_to_le32(conn->vals->max_write_size); | |
1088 | ||
1089 | if (conn->dialect > SMB20_PROT_ID) { | |
1090 | memcpy(conn->ClientGUID, req->ClientGUID, | |
070fb21e | 1091 | SMB2_CLIENT_GUID_SIZE); |
e2f34481 NJ |
1092 | conn->cli_sec_mode = le16_to_cpu(req->SecurityMode); |
1093 | } | |
1094 | ||
1095 | rsp->StructureSize = cpu_to_le16(65); | |
1096 | rsp->DialectRevision = cpu_to_le16(conn->dialect); | |
1097 | /* Not setting conn guid rsp->ServerGUID, as it | |
1098 | * not used by client for identifying server | |
1099 | */ | |
1100 | memset(rsp->ServerGUID, 0, SMB2_CLIENT_GUID_SIZE); | |
1101 | ||
1102 | rsp->SystemTime = cpu_to_le64(ksmbd_systime()); | |
1103 | rsp->ServerStartTime = 0; | |
1104 | ksmbd_debug(SMB, "negotiate context offset %d, count %d\n", | |
070fb21e NJ |
1105 | le32_to_cpu(rsp->NegotiateContextOffset), |
1106 | le16_to_cpu(rsp->NegotiateContextCount)); | |
e2f34481 NJ |
1107 | |
1108 | rsp->SecurityBufferOffset = cpu_to_le16(128); | |
1109 | rsp->SecurityBufferLength = cpu_to_le16(AUTH_GSS_LENGTH); | |
1110 | ksmbd_copy_gss_neg_header(((char *)(&rsp->hdr) + | |
070fb21e NJ |
1111 | sizeof(rsp->hdr.smb2_buf_length)) + |
1112 | le16_to_cpu(rsp->SecurityBufferOffset)); | |
e2f34481 | 1113 | inc_rfc1001_len(rsp, sizeof(struct smb2_negotiate_rsp) - |
070fb21e NJ |
1114 | sizeof(struct smb2_hdr) - sizeof(rsp->Buffer) + |
1115 | AUTH_GSS_LENGTH); | |
e2f34481 NJ |
1116 | rsp->SecurityMode = SMB2_NEGOTIATE_SIGNING_ENABLED_LE; |
1117 | conn->use_spnego = true; | |
1118 | ||
1119 | if ((server_conf.signing == KSMBD_CONFIG_OPT_AUTO || | |
64b39f4a NJ |
1120 | server_conf.signing == KSMBD_CONFIG_OPT_DISABLED) && |
1121 | req->SecurityMode & SMB2_NEGOTIATE_SIGNING_REQUIRED_LE) | |
e2f34481 NJ |
1122 | conn->sign = true; |
1123 | else if (server_conf.signing == KSMBD_CONFIG_OPT_MANDATORY) { | |
1124 | server_conf.enforced_signing = true; | |
1125 | rsp->SecurityMode |= SMB2_NEGOTIATE_SIGNING_REQUIRED_LE; | |
1126 | conn->sign = true; | |
1127 | } | |
1128 | ||
1129 | conn->srv_sec_mode = le16_to_cpu(rsp->SecurityMode); | |
1130 | ksmbd_conn_set_need_negotiate(work); | |
1131 | ||
1132 | err_out: | |
1133 | if (rc < 0) | |
1134 | smb2_set_err_rsp(work); | |
1135 | ||
1136 | return rc; | |
1137 | } | |
1138 | ||
1139 | static int alloc_preauth_hash(struct ksmbd_session *sess, | |
070fb21e | 1140 | struct ksmbd_conn *conn) |
e2f34481 NJ |
1141 | { |
1142 | if (sess->Preauth_HashValue) | |
1143 | return 0; | |
1144 | ||
86f52978 | 1145 | sess->Preauth_HashValue = kmemdup(conn->preauth_info->Preauth_HashValue, |
070fb21e | 1146 | PREAUTH_HASHVALUE_SIZE, GFP_KERNEL); |
e2f34481 NJ |
1147 | if (!sess->Preauth_HashValue) |
1148 | return -ENOMEM; | |
1149 | ||
e2f34481 NJ |
1150 | return 0; |
1151 | } | |
1152 | ||
1153 | static int generate_preauth_hash(struct ksmbd_work *work) | |
1154 | { | |
1155 | struct ksmbd_conn *conn = work->conn; | |
1156 | struct ksmbd_session *sess = work->sess; | |
f5a544e3 | 1157 | u8 *preauth_hash; |
e2f34481 NJ |
1158 | |
1159 | if (conn->dialect != SMB311_PROT_ID) | |
1160 | return 0; | |
1161 | ||
f5a544e3 NJ |
1162 | if (conn->binding) { |
1163 | struct preauth_session *preauth_sess; | |
1164 | ||
1165 | preauth_sess = ksmbd_preauth_session_lookup(conn, sess->id); | |
1166 | if (!preauth_sess) { | |
1167 | preauth_sess = ksmbd_preauth_session_alloc(conn, sess->id); | |
1168 | if (!preauth_sess) | |
1169 | return -ENOMEM; | |
1170 | } | |
1171 | ||
1172 | preauth_hash = preauth_sess->Preauth_HashValue; | |
1173 | } else { | |
1174 | if (!sess->Preauth_HashValue) | |
1175 | if (alloc_preauth_hash(sess, conn)) | |
1176 | return -ENOMEM; | |
1177 | preauth_hash = sess->Preauth_HashValue; | |
e2f34481 NJ |
1178 | } |
1179 | ||
f5a544e3 | 1180 | ksmbd_gen_preauth_integrity_hash(conn, work->request_buf, preauth_hash); |
e2f34481 NJ |
1181 | return 0; |
1182 | } | |
1183 | ||
1184 | static int decode_negotiation_token(struct ksmbd_work *work, | |
070fb21e | 1185 | struct negotiate_message *negblob) |
e2f34481 NJ |
1186 | { |
1187 | struct ksmbd_conn *conn = work->conn; | |
1188 | struct smb2_sess_setup_req *req; | |
1189 | int sz; | |
1190 | ||
1191 | if (!conn->use_spnego) | |
1192 | return -EINVAL; | |
1193 | ||
e5066499 | 1194 | req = work->request_buf; |
e2f34481 NJ |
1195 | sz = le16_to_cpu(req->SecurityBufferLength); |
1196 | ||
fad4161b HL |
1197 | if (ksmbd_decode_negTokenInit((char *)negblob, sz, conn)) { |
1198 | if (ksmbd_decode_negTokenTarg((char *)negblob, sz, conn)) { | |
e2f34481 NJ |
1199 | conn->auth_mechs |= KSMBD_AUTH_NTLMSSP; |
1200 | conn->preferred_auth_mech = KSMBD_AUTH_NTLMSSP; | |
1201 | conn->use_spnego = false; | |
1202 | } | |
1203 | } | |
1204 | return 0; | |
1205 | } | |
1206 | ||
1207 | static int ntlm_negotiate(struct ksmbd_work *work, | |
070fb21e | 1208 | struct negotiate_message *negblob) |
e2f34481 | 1209 | { |
e5066499 NJ |
1210 | struct smb2_sess_setup_req *req = work->request_buf; |
1211 | struct smb2_sess_setup_rsp *rsp = work->response_buf; | |
e2f34481 NJ |
1212 | struct challenge_message *chgblob; |
1213 | unsigned char *spnego_blob = NULL; | |
1214 | u16 spnego_blob_len; | |
1215 | char *neg_blob; | |
1216 | int sz, rc; | |
1217 | ||
1218 | ksmbd_debug(SMB, "negotiate phase\n"); | |
1219 | sz = le16_to_cpu(req->SecurityBufferLength); | |
1220 | rc = ksmbd_decode_ntlmssp_neg_blob(negblob, sz, work->sess); | |
1221 | if (rc) | |
1222 | return rc; | |
1223 | ||
1224 | sz = le16_to_cpu(rsp->SecurityBufferOffset); | |
1225 | chgblob = | |
1226 | (struct challenge_message *)((char *)&rsp->hdr.ProtocolId + sz); | |
1227 | memset(chgblob, 0, sizeof(struct challenge_message)); | |
1228 | ||
1229 | if (!work->conn->use_spnego) { | |
1230 | sz = ksmbd_build_ntlmssp_challenge_blob(chgblob, work->sess); | |
1231 | if (sz < 0) | |
1232 | return -ENOMEM; | |
1233 | ||
1234 | rsp->SecurityBufferLength = cpu_to_le16(sz); | |
1235 | return 0; | |
1236 | } | |
1237 | ||
1238 | sz = sizeof(struct challenge_message); | |
1239 | sz += (strlen(ksmbd_netbios_name()) * 2 + 1 + 4) * 6; | |
1240 | ||
1241 | neg_blob = kzalloc(sz, GFP_KERNEL); | |
1242 | if (!neg_blob) | |
1243 | return -ENOMEM; | |
1244 | ||
1245 | chgblob = (struct challenge_message *)neg_blob; | |
1246 | sz = ksmbd_build_ntlmssp_challenge_blob(chgblob, work->sess); | |
1247 | if (sz < 0) { | |
1248 | rc = -ENOMEM; | |
1249 | goto out; | |
1250 | } | |
1251 | ||
070fb21e NJ |
1252 | rc = build_spnego_ntlmssp_neg_blob(&spnego_blob, &spnego_blob_len, |
1253 | neg_blob, sz); | |
e2f34481 NJ |
1254 | if (rc) { |
1255 | rc = -ENOMEM; | |
1256 | goto out; | |
1257 | } | |
1258 | ||
1259 | sz = le16_to_cpu(rsp->SecurityBufferOffset); | |
1260 | memcpy((char *)&rsp->hdr.ProtocolId + sz, spnego_blob, spnego_blob_len); | |
1261 | rsp->SecurityBufferLength = cpu_to_le16(spnego_blob_len); | |
1262 | ||
1263 | out: | |
1264 | kfree(spnego_blob); | |
1265 | kfree(neg_blob); | |
1266 | return rc; | |
1267 | } | |
1268 | ||
1269 | static struct authenticate_message *user_authblob(struct ksmbd_conn *conn, | |
070fb21e | 1270 | struct smb2_sess_setup_req *req) |
e2f34481 NJ |
1271 | { |
1272 | int sz; | |
1273 | ||
1274 | if (conn->use_spnego && conn->mechToken) | |
1275 | return (struct authenticate_message *)conn->mechToken; | |
1276 | ||
1277 | sz = le16_to_cpu(req->SecurityBufferOffset); | |
1278 | return (struct authenticate_message *)((char *)&req->hdr.ProtocolId | |
1279 | + sz); | |
1280 | } | |
1281 | ||
1282 | static struct ksmbd_user *session_user(struct ksmbd_conn *conn, | |
070fb21e | 1283 | struct smb2_sess_setup_req *req) |
e2f34481 NJ |
1284 | { |
1285 | struct authenticate_message *authblob; | |
1286 | struct ksmbd_user *user; | |
1287 | char *name; | |
1288 | int sz; | |
1289 | ||
1290 | authblob = user_authblob(conn, req); | |
1291 | sz = le32_to_cpu(authblob->UserName.BufferOffset); | |
1292 | name = smb_strndup_from_utf16((const char *)authblob + sz, | |
1293 | le16_to_cpu(authblob->UserName.Length), | |
1294 | true, | |
1295 | conn->local_nls); | |
1296 | if (IS_ERR(name)) { | |
bde1694a | 1297 | pr_err("cannot allocate memory\n"); |
e2f34481 NJ |
1298 | return NULL; |
1299 | } | |
1300 | ||
1301 | ksmbd_debug(SMB, "session setup request for user %s\n", name); | |
1302 | user = ksmbd_login_user(name); | |
1303 | kfree(name); | |
1304 | return user; | |
1305 | } | |
1306 | ||
1307 | static int ntlm_authenticate(struct ksmbd_work *work) | |
1308 | { | |
e5066499 NJ |
1309 | struct smb2_sess_setup_req *req = work->request_buf; |
1310 | struct smb2_sess_setup_rsp *rsp = work->response_buf; | |
e2f34481 NJ |
1311 | struct ksmbd_conn *conn = work->conn; |
1312 | struct ksmbd_session *sess = work->sess; | |
1313 | struct channel *chann = NULL; | |
1314 | struct ksmbd_user *user; | |
64b39f4a | 1315 | u64 prev_id; |
e2f34481 NJ |
1316 | int sz, rc; |
1317 | ||
1318 | ksmbd_debug(SMB, "authenticate phase\n"); | |
1319 | if (conn->use_spnego) { | |
1320 | unsigned char *spnego_blob; | |
1321 | u16 spnego_blob_len; | |
1322 | ||
1323 | rc = build_spnego_ntlmssp_auth_blob(&spnego_blob, | |
1324 | &spnego_blob_len, | |
1325 | 0); | |
1326 | if (rc) | |
1327 | return -ENOMEM; | |
1328 | ||
1329 | sz = le16_to_cpu(rsp->SecurityBufferOffset); | |
64b39f4a | 1330 | memcpy((char *)&rsp->hdr.ProtocolId + sz, spnego_blob, spnego_blob_len); |
e2f34481 NJ |
1331 | rsp->SecurityBufferLength = cpu_to_le16(spnego_blob_len); |
1332 | kfree(spnego_blob); | |
1333 | inc_rfc1001_len(rsp, spnego_blob_len - 1); | |
1334 | } | |
1335 | ||
1336 | user = session_user(conn, req); | |
1337 | if (!user) { | |
1338 | ksmbd_debug(SMB, "Unknown user name or an error\n"); | |
1339 | rsp->hdr.Status = STATUS_LOGON_FAILURE; | |
1340 | return -EINVAL; | |
1341 | } | |
1342 | ||
1343 | /* Check for previous session */ | |
1344 | prev_id = le64_to_cpu(req->PreviousSessionId); | |
1345 | if (prev_id && prev_id != sess->id) | |
1346 | destroy_previous_session(user, prev_id); | |
1347 | ||
1348 | if (sess->state == SMB2_SESSION_VALID) { | |
1349 | /* | |
1350 | * Reuse session if anonymous try to connect | |
1351 | * on reauthetication. | |
1352 | */ | |
1353 | if (ksmbd_anonymous_user(user)) { | |
1354 | ksmbd_free_user(user); | |
1355 | return 0; | |
1356 | } | |
1357 | ksmbd_free_user(sess->user); | |
1358 | } | |
1359 | ||
1360 | sess->user = user; | |
1361 | if (user_guest(sess->user)) { | |
1362 | if (conn->sign) { | |
64b39f4a | 1363 | ksmbd_debug(SMB, "Guest login not allowed when signing enabled\n"); |
e2f34481 NJ |
1364 | rsp->hdr.Status = STATUS_LOGON_FAILURE; |
1365 | return -EACCES; | |
1366 | } | |
1367 | ||
1368 | rsp->SessionFlags = SMB2_SESSION_FLAG_IS_GUEST_LE; | |
1369 | } else { | |
1370 | struct authenticate_message *authblob; | |
1371 | ||
1372 | authblob = user_authblob(conn, req); | |
1373 | sz = le16_to_cpu(req->SecurityBufferLength); | |
1374 | rc = ksmbd_decode_ntlmssp_auth_blob(authblob, sz, sess); | |
1375 | if (rc) { | |
1376 | set_user_flag(sess->user, KSMBD_USER_FLAG_BAD_PASSWORD); | |
1377 | ksmbd_debug(SMB, "authentication failed\n"); | |
1378 | rsp->hdr.Status = STATUS_LOGON_FAILURE; | |
1379 | return -EINVAL; | |
1380 | } | |
1381 | ||
1382 | /* | |
1383 | * If session state is SMB2_SESSION_VALID, We can assume | |
1384 | * that it is reauthentication. And the user/password | |
1385 | * has been verified, so return it here. | |
1386 | */ | |
f5a544e3 NJ |
1387 | if (sess->state == SMB2_SESSION_VALID) { |
1388 | if (conn->binding) | |
1389 | goto binding_session; | |
e2f34481 | 1390 | return 0; |
f5a544e3 | 1391 | } |
e2f34481 NJ |
1392 | |
1393 | if ((conn->sign || server_conf.enforced_signing) || | |
64b39f4a | 1394 | (req->SecurityMode & SMB2_NEGOTIATE_SIGNING_REQUIRED)) |
e2f34481 NJ |
1395 | sess->sign = true; |
1396 | ||
1397 | if (conn->vals->capabilities & SMB2_GLOBAL_CAP_ENCRYPTION && | |
f5a544e3 NJ |
1398 | conn->ops->generate_encryptionkey && |
1399 | !(req->Flags & SMB2_SESSION_REQ_FLAG_BINDING)) { | |
e2f34481 NJ |
1400 | rc = conn->ops->generate_encryptionkey(sess); |
1401 | if (rc) { | |
1402 | ksmbd_debug(SMB, | |
070fb21e | 1403 | "SMB3 encryption key generation failed\n"); |
e2f34481 NJ |
1404 | rsp->hdr.Status = STATUS_LOGON_FAILURE; |
1405 | return rc; | |
1406 | } | |
1407 | sess->enc = true; | |
1408 | rsp->SessionFlags = SMB2_SESSION_FLAG_ENCRYPT_DATA_LE; | |
1409 | /* | |
1410 | * signing is disable if encryption is enable | |
1411 | * on this session | |
1412 | */ | |
1413 | sess->sign = false; | |
1414 | } | |
1415 | } | |
1416 | ||
f5a544e3 | 1417 | binding_session: |
e2f34481 | 1418 | if (conn->dialect >= SMB30_PROT_ID) { |
f5a544e3 | 1419 | chann = lookup_chann_list(sess, conn); |
e2f34481 NJ |
1420 | if (!chann) { |
1421 | chann = kmalloc(sizeof(struct channel), GFP_KERNEL); | |
1422 | if (!chann) | |
1423 | return -ENOMEM; | |
1424 | ||
1425 | chann->conn = conn; | |
1426 | INIT_LIST_HEAD(&chann->chann_list); | |
1427 | list_add(&chann->chann_list, &sess->ksmbd_chann_list); | |
1428 | } | |
1429 | } | |
1430 | ||
1431 | if (conn->ops->generate_signingkey) { | |
f5a544e3 | 1432 | rc = conn->ops->generate_signingkey(sess, conn); |
e2f34481 | 1433 | if (rc) { |
64b39f4a | 1434 | ksmbd_debug(SMB, "SMB3 signing key generation failed\n"); |
e2f34481 NJ |
1435 | rsp->hdr.Status = STATUS_LOGON_FAILURE; |
1436 | return rc; | |
1437 | } | |
1438 | } | |
1439 | ||
1440 | if (conn->dialect > SMB20_PROT_ID) { | |
1441 | if (!ksmbd_conn_lookup_dialect(conn)) { | |
bde1694a | 1442 | pr_err("fail to verify the dialect\n"); |
e2f34481 NJ |
1443 | rsp->hdr.Status = STATUS_USER_SESSION_DELETED; |
1444 | return -EPERM; | |
1445 | } | |
1446 | } | |
1447 | return 0; | |
1448 | } | |
1449 | ||
1450 | #ifdef CONFIG_SMB_SERVER_KERBEROS5 | |
1451 | static int krb5_authenticate(struct ksmbd_work *work) | |
1452 | { | |
e5066499 NJ |
1453 | struct smb2_sess_setup_req *req = work->request_buf; |
1454 | struct smb2_sess_setup_rsp *rsp = work->response_buf; | |
e2f34481 NJ |
1455 | struct ksmbd_conn *conn = work->conn; |
1456 | struct ksmbd_session *sess = work->sess; | |
1457 | char *in_blob, *out_blob; | |
1458 | struct channel *chann = NULL; | |
64b39f4a | 1459 | u64 prev_sess_id; |
e2f34481 NJ |
1460 | int in_len, out_len; |
1461 | int retval; | |
1462 | ||
1463 | in_blob = (char *)&req->hdr.ProtocolId + | |
1464 | le16_to_cpu(req->SecurityBufferOffset); | |
1465 | in_len = le16_to_cpu(req->SecurityBufferLength); | |
1466 | out_blob = (char *)&rsp->hdr.ProtocolId + | |
1467 | le16_to_cpu(rsp->SecurityBufferOffset); | |
1468 | out_len = work->response_sz - | |
1469 | offsetof(struct smb2_hdr, smb2_buf_length) - | |
1470 | le16_to_cpu(rsp->SecurityBufferOffset); | |
1471 | ||
1472 | /* Check previous session */ | |
1473 | prev_sess_id = le64_to_cpu(req->PreviousSessionId); | |
1474 | if (prev_sess_id && prev_sess_id != sess->id) | |
1475 | destroy_previous_session(sess->user, prev_sess_id); | |
1476 | ||
1477 | if (sess->state == SMB2_SESSION_VALID) | |
1478 | ksmbd_free_user(sess->user); | |
1479 | ||
1480 | retval = ksmbd_krb5_authenticate(sess, in_blob, in_len, | |
070fb21e | 1481 | out_blob, &out_len); |
e2f34481 NJ |
1482 | if (retval) { |
1483 | ksmbd_debug(SMB, "krb5 authentication failed\n"); | |
1484 | rsp->hdr.Status = STATUS_LOGON_FAILURE; | |
1485 | return retval; | |
1486 | } | |
1487 | rsp->SecurityBufferLength = cpu_to_le16(out_len); | |
1488 | inc_rfc1001_len(rsp, out_len - 1); | |
1489 | ||
1490 | if ((conn->sign || server_conf.enforced_signing) || | |
64b39f4a | 1491 | (req->SecurityMode & SMB2_NEGOTIATE_SIGNING_REQUIRED)) |
e2f34481 NJ |
1492 | sess->sign = true; |
1493 | ||
1494 | if ((conn->vals->capabilities & SMB2_GLOBAL_CAP_ENCRYPTION) && | |
64b39f4a | 1495 | conn->ops->generate_encryptionkey) { |
e2f34481 NJ |
1496 | retval = conn->ops->generate_encryptionkey(sess); |
1497 | if (retval) { | |
1498 | ksmbd_debug(SMB, | |
070fb21e | 1499 | "SMB3 encryption key generation failed\n"); |
e2f34481 NJ |
1500 | rsp->hdr.Status = STATUS_LOGON_FAILURE; |
1501 | return retval; | |
1502 | } | |
1503 | sess->enc = true; | |
1504 | rsp->SessionFlags = SMB2_SESSION_FLAG_ENCRYPT_DATA_LE; | |
1505 | sess->sign = false; | |
1506 | } | |
1507 | ||
1508 | if (conn->dialect >= SMB30_PROT_ID) { | |
f5a544e3 | 1509 | chann = lookup_chann_list(sess, conn); |
e2f34481 NJ |
1510 | if (!chann) { |
1511 | chann = kmalloc(sizeof(struct channel), GFP_KERNEL); | |
1512 | if (!chann) | |
1513 | return -ENOMEM; | |
1514 | ||
1515 | chann->conn = conn; | |
1516 | INIT_LIST_HEAD(&chann->chann_list); | |
1517 | list_add(&chann->chann_list, &sess->ksmbd_chann_list); | |
1518 | } | |
1519 | } | |
1520 | ||
1521 | if (conn->ops->generate_signingkey) { | |
f5a544e3 | 1522 | retval = conn->ops->generate_signingkey(sess, conn); |
e2f34481 | 1523 | if (retval) { |
64b39f4a | 1524 | ksmbd_debug(SMB, "SMB3 signing key generation failed\n"); |
e2f34481 NJ |
1525 | rsp->hdr.Status = STATUS_LOGON_FAILURE; |
1526 | return retval; | |
1527 | } | |
1528 | } | |
1529 | ||
1530 | if (conn->dialect > SMB20_PROT_ID) { | |
1531 | if (!ksmbd_conn_lookup_dialect(conn)) { | |
bde1694a | 1532 | pr_err("fail to verify the dialect\n"); |
e2f34481 NJ |
1533 | rsp->hdr.Status = STATUS_USER_SESSION_DELETED; |
1534 | return -EPERM; | |
1535 | } | |
1536 | } | |
1537 | return 0; | |
1538 | } | |
1539 | #else | |
1540 | static int krb5_authenticate(struct ksmbd_work *work) | |
1541 | { | |
1542 | return -EOPNOTSUPP; | |
1543 | } | |
1544 | #endif | |
1545 | ||
1546 | int smb2_sess_setup(struct ksmbd_work *work) | |
1547 | { | |
1548 | struct ksmbd_conn *conn = work->conn; | |
e5066499 NJ |
1549 | struct smb2_sess_setup_req *req = work->request_buf; |
1550 | struct smb2_sess_setup_rsp *rsp = work->response_buf; | |
e2f34481 NJ |
1551 | struct ksmbd_session *sess; |
1552 | struct negotiate_message *negblob; | |
1553 | int rc = 0; | |
1554 | ||
1555 | ksmbd_debug(SMB, "Received request for session setup\n"); | |
1556 | ||
1557 | rsp->StructureSize = cpu_to_le16(9); | |
1558 | rsp->SessionFlags = 0; | |
1559 | rsp->SecurityBufferOffset = cpu_to_le16(72); | |
1560 | rsp->SecurityBufferLength = 0; | |
1561 | inc_rfc1001_len(rsp, 9); | |
1562 | ||
1563 | if (!req->hdr.SessionId) { | |
1564 | sess = ksmbd_smb2_session_create(); | |
1565 | if (!sess) { | |
1566 | rc = -ENOMEM; | |
1567 | goto out_err; | |
1568 | } | |
1569 | rsp->hdr.SessionId = cpu_to_le64(sess->id); | |
1570 | ksmbd_session_register(conn, sess); | |
f5a544e3 NJ |
1571 | } else if (conn->dialect >= SMB30_PROT_ID && |
1572 | (server_conf.flags & KSMBD_GLOBAL_FLAG_SMB3_MULTICHANNEL) && | |
1573 | req->Flags & SMB2_SESSION_REQ_FLAG_BINDING) { | |
1574 | u64 sess_id = le64_to_cpu(req->hdr.SessionId); | |
1575 | ||
1576 | sess = ksmbd_session_lookup_slowpath(sess_id); | |
1577 | if (!sess) { | |
1578 | rc = -ENOENT; | |
1579 | goto out_err; | |
1580 | } | |
1581 | ||
1582 | if (conn->dialect != sess->conn->dialect) { | |
1583 | rc = -EINVAL; | |
1584 | goto out_err; | |
1585 | } | |
1586 | ||
1587 | if (!(req->hdr.Flags & SMB2_FLAGS_SIGNED)) { | |
1588 | rc = -EINVAL; | |
1589 | goto out_err; | |
1590 | } | |
1591 | ||
1592 | if (strncmp(conn->ClientGUID, sess->conn->ClientGUID, | |
1593 | SMB2_CLIENT_GUID_SIZE)) { | |
1594 | rc = -ENOENT; | |
1595 | goto out_err; | |
1596 | } | |
1597 | ||
1598 | if (sess->state == SMB2_SESSION_IN_PROGRESS) { | |
1599 | rc = -EACCES; | |
1600 | goto out_err; | |
1601 | } | |
1602 | ||
1603 | if (sess->state == SMB2_SESSION_EXPIRED) { | |
1604 | rc = -EFAULT; | |
1605 | goto out_err; | |
1606 | } | |
1607 | ||
1608 | if (ksmbd_session_lookup(conn, sess_id)) { | |
1609 | rc = -EACCES; | |
1610 | goto out_err; | |
1611 | } | |
1612 | ||
1613 | conn->binding = true; | |
1614 | } else if ((conn->dialect < SMB30_PROT_ID || | |
1615 | server_conf.flags & KSMBD_GLOBAL_FLAG_SMB3_MULTICHANNEL) && | |
1616 | (req->Flags & SMB2_SESSION_REQ_FLAG_BINDING)) { | |
1617 | rc = -EACCES; | |
1618 | goto out_err; | |
e2f34481 NJ |
1619 | } else { |
1620 | sess = ksmbd_session_lookup(conn, | |
070fb21e | 1621 | le64_to_cpu(req->hdr.SessionId)); |
e2f34481 NJ |
1622 | if (!sess) { |
1623 | rc = -ENOENT; | |
e2f34481 NJ |
1624 | goto out_err; |
1625 | } | |
1626 | } | |
1627 | work->sess = sess; | |
1628 | ||
1629 | if (sess->state == SMB2_SESSION_EXPIRED) | |
1630 | sess->state = SMB2_SESSION_IN_PROGRESS; | |
1631 | ||
1632 | negblob = (struct negotiate_message *)((char *)&req->hdr.ProtocolId + | |
1633 | le16_to_cpu(req->SecurityBufferOffset)); | |
1634 | ||
1635 | if (decode_negotiation_token(work, negblob) == 0) { | |
1636 | if (conn->mechToken) | |
1637 | negblob = (struct negotiate_message *)conn->mechToken; | |
1638 | } | |
1639 | ||
1640 | if (server_conf.auth_mechs & conn->auth_mechs) { | |
f5a544e3 NJ |
1641 | rc = generate_preauth_hash(work); |
1642 | if (rc) | |
1643 | goto out_err; | |
1644 | ||
e2f34481 NJ |
1645 | if (conn->preferred_auth_mech & |
1646 | (KSMBD_AUTH_KRB5 | KSMBD_AUTH_MSKRB5)) { | |
e2f34481 NJ |
1647 | rc = krb5_authenticate(work); |
1648 | if (rc) { | |
f5a544e3 | 1649 | rc = -EINVAL; |
e2f34481 NJ |
1650 | goto out_err; |
1651 | } | |
1652 | ||
1653 | ksmbd_conn_set_good(work); | |
1654 | sess->state = SMB2_SESSION_VALID; | |
822bc8ea | 1655 | kfree(sess->Preauth_HashValue); |
e2f34481 NJ |
1656 | sess->Preauth_HashValue = NULL; |
1657 | } else if (conn->preferred_auth_mech == KSMBD_AUTH_NTLMSSP) { | |
e2f34481 NJ |
1658 | if (negblob->MessageType == NtLmNegotiate) { |
1659 | rc = ntlm_negotiate(work, negblob); | |
1660 | if (rc) | |
1661 | goto out_err; | |
1662 | rsp->hdr.Status = | |
1663 | STATUS_MORE_PROCESSING_REQUIRED; | |
1664 | /* | |
1665 | * Note: here total size -1 is done as an | |
1666 | * adjustment for 0 size blob | |
1667 | */ | |
64b39f4a | 1668 | inc_rfc1001_len(rsp, le16_to_cpu(rsp->SecurityBufferLength) - 1); |
e2f34481 NJ |
1669 | |
1670 | } else if (negblob->MessageType == NtLmAuthenticate) { | |
1671 | rc = ntlm_authenticate(work); | |
1672 | if (rc) | |
1673 | goto out_err; | |
1674 | ||
1675 | ksmbd_conn_set_good(work); | |
1676 | sess->state = SMB2_SESSION_VALID; | |
f5a544e3 NJ |
1677 | if (conn->binding) { |
1678 | struct preauth_session *preauth_sess; | |
1679 | ||
1680 | preauth_sess = | |
1681 | ksmbd_preauth_session_lookup(conn, sess->id); | |
1682 | if (preauth_sess) { | |
1683 | list_del(&preauth_sess->preauth_entry); | |
1684 | kfree(preauth_sess); | |
1685 | } | |
1686 | } | |
822bc8ea | 1687 | kfree(sess->Preauth_HashValue); |
e2f34481 NJ |
1688 | sess->Preauth_HashValue = NULL; |
1689 | } | |
1690 | } else { | |
1691 | /* TODO: need one more negotiation */ | |
bde1694a | 1692 | pr_err("Not support the preferred authentication\n"); |
e2f34481 | 1693 | rc = -EINVAL; |
e2f34481 NJ |
1694 | } |
1695 | } else { | |
bde1694a | 1696 | pr_err("Not support authentication\n"); |
e2f34481 | 1697 | rc = -EINVAL; |
e2f34481 NJ |
1698 | } |
1699 | ||
1700 | out_err: | |
f5a544e3 NJ |
1701 | if (rc == -EINVAL) |
1702 | rsp->hdr.Status = STATUS_INVALID_PARAMETER; | |
1703 | else if (rc == -ENOENT) | |
1704 | rsp->hdr.Status = STATUS_USER_SESSION_DELETED; | |
1705 | else if (rc == -EACCES) | |
1706 | rsp->hdr.Status = STATUS_REQUEST_NOT_ACCEPTED; | |
1707 | else if (rc == -EFAULT) | |
1708 | rsp->hdr.Status = STATUS_NETWORK_SESSION_EXPIRED; | |
1709 | else if (rc) | |
1710 | rsp->hdr.Status = STATUS_LOGON_FAILURE; | |
1711 | ||
e2f34481 NJ |
1712 | if (conn->use_spnego && conn->mechToken) { |
1713 | kfree(conn->mechToken); | |
1714 | conn->mechToken = NULL; | |
1715 | } | |
1716 | ||
1717 | if (rc < 0 && sess) { | |
1718 | ksmbd_session_destroy(sess); | |
1719 | work->sess = NULL; | |
1720 | } | |
1721 | ||
1722 | return rc; | |
1723 | } | |
1724 | ||
1725 | /** | |
1726 | * smb2_tree_connect() - handler for smb2 tree connect command | |
1727 | * @work: smb work containing smb request buffer | |
1728 | * | |
1729 | * Return: 0 on success, otherwise error | |
1730 | */ | |
1731 | int smb2_tree_connect(struct ksmbd_work *work) | |
1732 | { | |
1733 | struct ksmbd_conn *conn = work->conn; | |
e5066499 NJ |
1734 | struct smb2_tree_connect_req *req = work->request_buf; |
1735 | struct smb2_tree_connect_rsp *rsp = work->response_buf; | |
e2f34481 NJ |
1736 | struct ksmbd_session *sess = work->sess; |
1737 | char *treename = NULL, *name = NULL; | |
1738 | struct ksmbd_tree_conn_status status; | |
1739 | struct ksmbd_share_config *share; | |
1740 | int rc = -EINVAL; | |
1741 | ||
1742 | treename = smb_strndup_from_utf16(req->Buffer, | |
070fb21e NJ |
1743 | le16_to_cpu(req->PathLength), true, |
1744 | conn->local_nls); | |
e2f34481 | 1745 | if (IS_ERR(treename)) { |
bde1694a | 1746 | pr_err("treename is NULL\n"); |
e2f34481 NJ |
1747 | status.ret = KSMBD_TREE_CONN_STATUS_ERROR; |
1748 | goto out_err1; | |
1749 | } | |
1750 | ||
36ba3866 | 1751 | name = ksmbd_extract_sharename(treename); |
e2f34481 NJ |
1752 | if (IS_ERR(name)) { |
1753 | status.ret = KSMBD_TREE_CONN_STATUS_ERROR; | |
1754 | goto out_err1; | |
1755 | } | |
1756 | ||
1757 | ksmbd_debug(SMB, "tree connect request for tree %s treename %s\n", | |
070fb21e | 1758 | name, treename); |
e2f34481 NJ |
1759 | |
1760 | status = ksmbd_tree_conn_connect(sess, name); | |
1761 | if (status.ret == KSMBD_TREE_CONN_STATUS_OK) | |
1762 | rsp->hdr.Id.SyncId.TreeId = cpu_to_le32(status.tree_conn->id); | |
1763 | else | |
1764 | goto out_err1; | |
1765 | ||
1766 | share = status.tree_conn->share_conf; | |
1767 | if (test_share_config_flag(share, KSMBD_SHARE_FLAG_PIPE)) { | |
1768 | ksmbd_debug(SMB, "IPC share path request\n"); | |
1769 | rsp->ShareType = SMB2_SHARE_TYPE_PIPE; | |
1770 | rsp->MaximalAccess = FILE_READ_DATA_LE | FILE_READ_EA_LE | | |
1771 | FILE_EXECUTE_LE | FILE_READ_ATTRIBUTES_LE | | |
1772 | FILE_DELETE_LE | FILE_READ_CONTROL_LE | | |
1773 | FILE_WRITE_DAC_LE | FILE_WRITE_OWNER_LE | | |
1774 | FILE_SYNCHRONIZE_LE; | |
1775 | } else { | |
1776 | rsp->ShareType = SMB2_SHARE_TYPE_DISK; | |
1777 | rsp->MaximalAccess = FILE_READ_DATA_LE | FILE_READ_EA_LE | | |
1778 | FILE_EXECUTE_LE | FILE_READ_ATTRIBUTES_LE; | |
1779 | if (test_tree_conn_flag(status.tree_conn, | |
1780 | KSMBD_TREE_CONN_FLAG_WRITABLE)) { | |
1781 | rsp->MaximalAccess |= FILE_WRITE_DATA_LE | | |
1782 | FILE_APPEND_DATA_LE | FILE_WRITE_EA_LE | | |
3aefd54d WJ |
1783 | FILE_DELETE_LE | FILE_WRITE_ATTRIBUTES_LE | |
1784 | FILE_DELETE_CHILD_LE | FILE_READ_CONTROL_LE | | |
1785 | FILE_WRITE_DAC_LE | FILE_WRITE_OWNER_LE | | |
1786 | FILE_SYNCHRONIZE_LE; | |
e2f34481 NJ |
1787 | } |
1788 | } | |
1789 | ||
1790 | status.tree_conn->maximal_access = le32_to_cpu(rsp->MaximalAccess); | |
1791 | if (conn->posix_ext_supported) | |
1792 | status.tree_conn->posix_extensions = true; | |
1793 | ||
1794 | out_err1: | |
1795 | rsp->StructureSize = cpu_to_le16(16); | |
1796 | rsp->Capabilities = 0; | |
1797 | rsp->Reserved = 0; | |
1798 | /* default manual caching */ | |
1799 | rsp->ShareFlags = SMB2_SHAREFLAG_MANUAL_CACHING; | |
1800 | inc_rfc1001_len(rsp, 16); | |
1801 | ||
1802 | if (!IS_ERR(treename)) | |
1803 | kfree(treename); | |
1804 | if (!IS_ERR(name)) | |
1805 | kfree(name); | |
1806 | ||
1807 | switch (status.ret) { | |
1808 | case KSMBD_TREE_CONN_STATUS_OK: | |
1809 | rsp->hdr.Status = STATUS_SUCCESS; | |
1810 | rc = 0; | |
1811 | break; | |
1812 | case KSMBD_TREE_CONN_STATUS_NO_SHARE: | |
1813 | rsp->hdr.Status = STATUS_BAD_NETWORK_PATH; | |
1814 | break; | |
1815 | case -ENOMEM: | |
1816 | case KSMBD_TREE_CONN_STATUS_NOMEM: | |
1817 | rsp->hdr.Status = STATUS_NO_MEMORY; | |
1818 | break; | |
1819 | case KSMBD_TREE_CONN_STATUS_ERROR: | |
1820 | case KSMBD_TREE_CONN_STATUS_TOO_MANY_CONNS: | |
1821 | case KSMBD_TREE_CONN_STATUS_TOO_MANY_SESSIONS: | |
1822 | rsp->hdr.Status = STATUS_ACCESS_DENIED; | |
1823 | break; | |
1824 | case -EINVAL: | |
1825 | rsp->hdr.Status = STATUS_INVALID_PARAMETER; | |
1826 | break; | |
1827 | default: | |
1828 | rsp->hdr.Status = STATUS_ACCESS_DENIED; | |
1829 | } | |
1830 | ||
1831 | return rc; | |
1832 | } | |
1833 | ||
1834 | /** | |
1835 | * smb2_create_open_flags() - convert smb open flags to unix open flags | |
1836 | * @file_present: is file already present | |
1837 | * @access: file access flags | |
1838 | * @disposition: file disposition flags | |
e2f34481 NJ |
1839 | * |
1840 | * Return: file open flags | |
1841 | */ | |
1842 | static int smb2_create_open_flags(bool file_present, __le32 access, | |
070fb21e | 1843 | __le32 disposition) |
e2f34481 NJ |
1844 | { |
1845 | int oflags = O_NONBLOCK | O_LARGEFILE; | |
1846 | ||
1847 | if (access & FILE_READ_DESIRED_ACCESS_LE && | |
64b39f4a | 1848 | access & FILE_WRITE_DESIRE_ACCESS_LE) |
e2f34481 NJ |
1849 | oflags |= O_RDWR; |
1850 | else if (access & FILE_WRITE_DESIRE_ACCESS_LE) | |
1851 | oflags |= O_WRONLY; | |
1852 | else | |
1853 | oflags |= O_RDONLY; | |
1854 | ||
1855 | if (access == FILE_READ_ATTRIBUTES_LE) | |
1856 | oflags |= O_PATH; | |
1857 | ||
1858 | if (file_present) { | |
1859 | switch (disposition & FILE_CREATE_MASK_LE) { | |
1860 | case FILE_OPEN_LE: | |
1861 | case FILE_CREATE_LE: | |
1862 | break; | |
1863 | case FILE_SUPERSEDE_LE: | |
1864 | case FILE_OVERWRITE_LE: | |
1865 | case FILE_OVERWRITE_IF_LE: | |
1866 | oflags |= O_TRUNC; | |
1867 | break; | |
1868 | default: | |
1869 | break; | |
1870 | } | |
1871 | } else { | |
1872 | switch (disposition & FILE_CREATE_MASK_LE) { | |
1873 | case FILE_SUPERSEDE_LE: | |
1874 | case FILE_CREATE_LE: | |
1875 | case FILE_OPEN_IF_LE: | |
1876 | case FILE_OVERWRITE_IF_LE: | |
1877 | oflags |= O_CREAT; | |
1878 | break; | |
1879 | case FILE_OPEN_LE: | |
1880 | case FILE_OVERWRITE_LE: | |
1881 | oflags &= ~O_CREAT; | |
1882 | break; | |
1883 | default: | |
1884 | break; | |
1885 | } | |
1886 | } | |
1887 | return oflags; | |
1888 | } | |
1889 | ||
1890 | /** | |
1891 | * smb2_tree_disconnect() - handler for smb tree connect request | |
1892 | * @work: smb work containing request buffer | |
1893 | * | |
1894 | * Return: 0 | |
1895 | */ | |
1896 | int smb2_tree_disconnect(struct ksmbd_work *work) | |
1897 | { | |
e5066499 | 1898 | struct smb2_tree_disconnect_rsp *rsp = work->response_buf; |
e2f34481 NJ |
1899 | struct ksmbd_session *sess = work->sess; |
1900 | struct ksmbd_tree_connect *tcon = work->tcon; | |
1901 | ||
1902 | rsp->StructureSize = cpu_to_le16(4); | |
1903 | inc_rfc1001_len(rsp, 4); | |
1904 | ||
1905 | ksmbd_debug(SMB, "request\n"); | |
1906 | ||
1907 | if (!tcon) { | |
e5066499 | 1908 | struct smb2_tree_disconnect_req *req = work->request_buf; |
e2f34481 NJ |
1909 | |
1910 | ksmbd_debug(SMB, "Invalid tid %d\n", req->hdr.Id.SyncId.TreeId); | |
1911 | rsp->hdr.Status = STATUS_NETWORK_NAME_DELETED; | |
1912 | smb2_set_err_rsp(work); | |
1913 | return 0; | |
1914 | } | |
1915 | ||
1916 | ksmbd_close_tree_conn_fds(work); | |
1917 | ksmbd_tree_conn_disconnect(sess, tcon); | |
1918 | return 0; | |
1919 | } | |
1920 | ||
1921 | /** | |
1922 | * smb2_session_logoff() - handler for session log off request | |
1923 | * @work: smb work containing request buffer | |
1924 | * | |
1925 | * Return: 0 | |
1926 | */ | |
1927 | int smb2_session_logoff(struct ksmbd_work *work) | |
1928 | { | |
1929 | struct ksmbd_conn *conn = work->conn; | |
e5066499 | 1930 | struct smb2_logoff_rsp *rsp = work->response_buf; |
e2f34481 NJ |
1931 | struct ksmbd_session *sess = work->sess; |
1932 | ||
1933 | rsp->StructureSize = cpu_to_le16(4); | |
1934 | inc_rfc1001_len(rsp, 4); | |
1935 | ||
1936 | ksmbd_debug(SMB, "request\n"); | |
1937 | ||
1938 | /* Got a valid session, set connection state */ | |
1939 | WARN_ON(sess->conn != conn); | |
1940 | ||
1941 | /* setting CifsExiting here may race with start_tcp_sess */ | |
1942 | ksmbd_conn_set_need_reconnect(work); | |
1943 | ksmbd_close_session_fds(work); | |
1944 | ksmbd_conn_wait_idle(conn); | |
1945 | ||
1946 | if (ksmbd_tree_conn_session_logoff(sess)) { | |
e5066499 | 1947 | struct smb2_logoff_req *req = work->request_buf; |
e2f34481 NJ |
1948 | |
1949 | ksmbd_debug(SMB, "Invalid tid %d\n", req->hdr.Id.SyncId.TreeId); | |
1950 | rsp->hdr.Status = STATUS_NETWORK_NAME_DELETED; | |
1951 | smb2_set_err_rsp(work); | |
1952 | return 0; | |
1953 | } | |
1954 | ||
1955 | ksmbd_destroy_file_table(&sess->file_table); | |
1956 | sess->state = SMB2_SESSION_EXPIRED; | |
1957 | ||
1958 | ksmbd_free_user(sess->user); | |
1959 | sess->user = NULL; | |
1960 | ||
1961 | /* let start_tcp_sess free connection info now */ | |
1962 | ksmbd_conn_set_need_negotiate(work); | |
1963 | return 0; | |
1964 | } | |
1965 | ||
1966 | /** | |
1967 | * create_smb2_pipe() - create IPC pipe | |
1968 | * @work: smb work containing request buffer | |
1969 | * | |
1970 | * Return: 0 on success, otherwise error | |
1971 | */ | |
1972 | static noinline int create_smb2_pipe(struct ksmbd_work *work) | |
1973 | { | |
e5066499 NJ |
1974 | struct smb2_create_rsp *rsp = work->response_buf; |
1975 | struct smb2_create_req *req = work->request_buf; | |
e2f34481 NJ |
1976 | int id; |
1977 | int err; | |
1978 | char *name; | |
1979 | ||
1980 | name = smb_strndup_from_utf16(req->Buffer, le16_to_cpu(req->NameLength), | |
070fb21e | 1981 | 1, work->conn->local_nls); |
e2f34481 NJ |
1982 | if (IS_ERR(name)) { |
1983 | rsp->hdr.Status = STATUS_NO_MEMORY; | |
1984 | err = PTR_ERR(name); | |
1985 | goto out; | |
1986 | } | |
1987 | ||
1988 | id = ksmbd_session_rpc_open(work->sess, name); | |
79caa960 | 1989 | if (id < 0) { |
bde1694a | 1990 | pr_err("Unable to open RPC pipe: %d\n", id); |
79caa960 MM |
1991 | err = id; |
1992 | goto out; | |
1993 | } | |
e2f34481 | 1994 | |
79caa960 | 1995 | rsp->hdr.Status = STATUS_SUCCESS; |
e2f34481 NJ |
1996 | rsp->StructureSize = cpu_to_le16(89); |
1997 | rsp->OplockLevel = SMB2_OPLOCK_LEVEL_NONE; | |
1998 | rsp->Reserved = 0; | |
1999 | rsp->CreateAction = cpu_to_le32(FILE_OPENED); | |
2000 | ||
2001 | rsp->CreationTime = cpu_to_le64(0); | |
2002 | rsp->LastAccessTime = cpu_to_le64(0); | |
2003 | rsp->ChangeTime = cpu_to_le64(0); | |
2004 | rsp->AllocationSize = cpu_to_le64(0); | |
2005 | rsp->EndofFile = cpu_to_le64(0); | |
2006 | rsp->FileAttributes = ATTR_NORMAL_LE; | |
2007 | rsp->Reserved2 = 0; | |
2008 | rsp->VolatileFileId = cpu_to_le64(id); | |
2009 | rsp->PersistentFileId = 0; | |
2010 | rsp->CreateContextsOffset = 0; | |
2011 | rsp->CreateContextsLength = 0; | |
2012 | ||
2013 | inc_rfc1001_len(rsp, 88); /* StructureSize - 1*/ | |
2014 | kfree(name); | |
2015 | return 0; | |
2016 | ||
2017 | out: | |
79caa960 MM |
2018 | switch (err) { |
2019 | case -EINVAL: | |
2020 | rsp->hdr.Status = STATUS_INVALID_PARAMETER; | |
2021 | break; | |
2022 | case -ENOSPC: | |
2023 | case -ENOMEM: | |
2024 | rsp->hdr.Status = STATUS_NO_MEMORY; | |
2025 | break; | |
2026 | } | |
2027 | ||
2028 | if (!IS_ERR(name)) | |
2029 | kfree(name); | |
2030 | ||
e2f34481 NJ |
2031 | smb2_set_err_rsp(work); |
2032 | return err; | |
2033 | } | |
2034 | ||
e2f34481 NJ |
2035 | /** |
2036 | * smb2_set_ea() - handler for setting extended attributes using set | |
2037 | * info command | |
2038 | * @eabuf: set info command buffer | |
2039 | * @path: dentry path for get ea | |
2040 | * | |
2041 | * Return: 0 on success, otherwise error | |
2042 | */ | |
2043 | static int smb2_set_ea(struct smb2_ea_info *eabuf, struct path *path) | |
2044 | { | |
2045 | char *attr_name = NULL, *value; | |
2046 | int rc = 0; | |
2047 | int next = 0; | |
2048 | ||
2049 | attr_name = kmalloc(XATTR_NAME_MAX + 1, GFP_KERNEL); | |
2050 | if (!attr_name) | |
2051 | return -ENOMEM; | |
2052 | ||
2053 | do { | |
2054 | if (!eabuf->EaNameLength) | |
2055 | goto next; | |
2056 | ||
2057 | ksmbd_debug(SMB, | |
070fb21e NJ |
2058 | "name : <%s>, name_len : %u, value_len : %u, next : %u\n", |
2059 | eabuf->name, eabuf->EaNameLength, | |
2060 | le16_to_cpu(eabuf->EaValueLength), | |
2061 | le32_to_cpu(eabuf->NextEntryOffset)); | |
e2f34481 NJ |
2062 | |
2063 | if (eabuf->EaNameLength > | |
070fb21e | 2064 | (XATTR_NAME_MAX - XATTR_USER_PREFIX_LEN)) { |
e2f34481 NJ |
2065 | rc = -EINVAL; |
2066 | break; | |
2067 | } | |
2068 | ||
2069 | memcpy(attr_name, XATTR_USER_PREFIX, XATTR_USER_PREFIX_LEN); | |
2070 | memcpy(&attr_name[XATTR_USER_PREFIX_LEN], eabuf->name, | |
070fb21e | 2071 | eabuf->EaNameLength); |
e2f34481 NJ |
2072 | attr_name[XATTR_USER_PREFIX_LEN + eabuf->EaNameLength] = '\0'; |
2073 | value = (char *)&eabuf->name + eabuf->EaNameLength + 1; | |
2074 | ||
2075 | if (!eabuf->EaValueLength) { | |
2076 | rc = ksmbd_vfs_casexattr_len(path->dentry, | |
2077 | attr_name, | |
2078 | XATTR_USER_PREFIX_LEN + | |
2079 | eabuf->EaNameLength); | |
2080 | ||
2081 | /* delete the EA only when it exits */ | |
2082 | if (rc > 0) { | |
2083 | rc = ksmbd_vfs_remove_xattr(path->dentry, | |
2084 | attr_name); | |
2085 | ||
2086 | if (rc < 0) { | |
2087 | ksmbd_debug(SMB, | |
070fb21e NJ |
2088 | "remove xattr failed(%d)\n", |
2089 | rc); | |
e2f34481 NJ |
2090 | break; |
2091 | } | |
2092 | } | |
2093 | ||
2094 | /* if the EA doesn't exist, just do nothing. */ | |
2095 | rc = 0; | |
2096 | } else { | |
2097 | rc = ksmbd_vfs_setxattr(path->dentry, attr_name, value, | |
070fb21e | 2098 | le16_to_cpu(eabuf->EaValueLength), 0); |
e2f34481 NJ |
2099 | if (rc < 0) { |
2100 | ksmbd_debug(SMB, | |
070fb21e NJ |
2101 | "ksmbd_vfs_setxattr is failed(%d)\n", |
2102 | rc); | |
e2f34481 NJ |
2103 | break; |
2104 | } | |
2105 | } | |
2106 | ||
2107 | next: | |
2108 | next = le32_to_cpu(eabuf->NextEntryOffset); | |
2109 | eabuf = (struct smb2_ea_info *)((char *)eabuf + next); | |
2110 | } while (next != 0); | |
2111 | ||
2112 | kfree(attr_name); | |
2113 | return rc; | |
2114 | } | |
2115 | ||
2116 | static inline int check_context_err(void *ctx, char *str) | |
2117 | { | |
2118 | int err; | |
2119 | ||
2120 | err = PTR_ERR(ctx); | |
2121 | ksmbd_debug(SMB, "find context %s err %d\n", str, err); | |
2122 | ||
2123 | if (err == -EINVAL) { | |
bde1694a | 2124 | pr_err("bad name length\n"); |
e2f34481 NJ |
2125 | return err; |
2126 | } | |
2127 | ||
2128 | return 0; | |
2129 | } | |
2130 | ||
2131 | static noinline int smb2_set_stream_name_xattr(struct path *path, | |
070fb21e NJ |
2132 | struct ksmbd_file *fp, |
2133 | char *stream_name, int s_type) | |
e2f34481 NJ |
2134 | { |
2135 | size_t xattr_stream_size; | |
2136 | char *xattr_stream_name; | |
2137 | int rc; | |
2138 | ||
2139 | rc = ksmbd_vfs_xattr_stream_name(stream_name, | |
2140 | &xattr_stream_name, | |
2141 | &xattr_stream_size, | |
2142 | s_type); | |
2143 | if (rc) | |
2144 | return rc; | |
2145 | ||
2146 | fp->stream.name = xattr_stream_name; | |
2147 | fp->stream.size = xattr_stream_size; | |
2148 | ||
2149 | /* Check if there is stream prefix in xattr space */ | |
2150 | rc = ksmbd_vfs_casexattr_len(path->dentry, | |
2151 | xattr_stream_name, | |
2152 | xattr_stream_size); | |
2153 | if (rc >= 0) | |
2154 | return 0; | |
2155 | ||
2156 | if (fp->cdoption == FILE_OPEN_LE) { | |
2157 | ksmbd_debug(SMB, "XATTR stream name lookup failed: %d\n", rc); | |
2158 | return -EBADF; | |
2159 | } | |
2160 | ||
2161 | rc = ksmbd_vfs_setxattr(path->dentry, xattr_stream_name, NULL, 0, 0); | |
2162 | if (rc < 0) | |
bde1694a | 2163 | pr_err("Failed to store XATTR stream name :%d\n", rc); |
e2f34481 NJ |
2164 | return 0; |
2165 | } | |
2166 | ||
2167 | static int smb2_remove_smb_xattrs(struct dentry *dentry) | |
2168 | { | |
2169 | char *name, *xattr_list = NULL; | |
2170 | ssize_t xattr_list_len; | |
2171 | int err = 0; | |
2172 | ||
2173 | xattr_list_len = ksmbd_vfs_listxattr(dentry, &xattr_list); | |
2174 | if (xattr_list_len < 0) { | |
2175 | goto out; | |
2176 | } else if (!xattr_list_len) { | |
2177 | ksmbd_debug(SMB, "empty xattr in the file\n"); | |
2178 | goto out; | |
2179 | } | |
2180 | ||
2181 | for (name = xattr_list; name - xattr_list < xattr_list_len; | |
2182 | name += strlen(name) + 1) { | |
2183 | ksmbd_debug(SMB, "%s, len %zd\n", name, strlen(name)); | |
2184 | ||
2185 | if (strncmp(name, XATTR_USER_PREFIX, XATTR_USER_PREFIX_LEN) && | |
64b39f4a NJ |
2186 | strncmp(&name[XATTR_USER_PREFIX_LEN], DOS_ATTRIBUTE_PREFIX, |
2187 | DOS_ATTRIBUTE_PREFIX_LEN) && | |
2188 | strncmp(&name[XATTR_USER_PREFIX_LEN], STREAM_PREFIX, STREAM_PREFIX_LEN)) | |
e2f34481 NJ |
2189 | continue; |
2190 | ||
2191 | err = ksmbd_vfs_remove_xattr(dentry, name); | |
2192 | if (err) | |
2193 | ksmbd_debug(SMB, "remove xattr failed : %s\n", name); | |
2194 | } | |
2195 | out: | |
79f6b11a | 2196 | kvfree(xattr_list); |
e2f34481 NJ |
2197 | return err; |
2198 | } | |
2199 | ||
2200 | static int smb2_create_truncate(struct path *path) | |
2201 | { | |
2202 | int rc = vfs_truncate(path, 0); | |
2203 | ||
2204 | if (rc) { | |
bde1694a | 2205 | pr_err("vfs_truncate failed, rc %d\n", rc); |
e2f34481 NJ |
2206 | return rc; |
2207 | } | |
2208 | ||
2209 | rc = smb2_remove_smb_xattrs(path->dentry); | |
2210 | if (rc == -EOPNOTSUPP) | |
2211 | rc = 0; | |
2212 | if (rc) | |
2213 | ksmbd_debug(SMB, | |
070fb21e NJ |
2214 | "ksmbd_truncate_stream_name_xattr failed, rc %d\n", |
2215 | rc); | |
e2f34481 NJ |
2216 | return rc; |
2217 | } | |
2218 | ||
64b39f4a | 2219 | static void smb2_new_xattrs(struct ksmbd_tree_connect *tcon, struct path *path, |
070fb21e | 2220 | struct ksmbd_file *fp) |
e2f34481 NJ |
2221 | { |
2222 | struct xattr_dos_attrib da = {0}; | |
2223 | int rc; | |
2224 | ||
2225 | if (!test_share_config_flag(tcon->share_conf, | |
2226 | KSMBD_SHARE_FLAG_STORE_DOS_ATTRS)) | |
2227 | return; | |
2228 | ||
2229 | da.version = 4; | |
2230 | da.attr = le32_to_cpu(fp->f_ci->m_fattr); | |
2231 | da.itime = da.create_time = fp->create_time; | |
2232 | da.flags = XATTR_DOSINFO_ATTRIB | XATTR_DOSINFO_CREATE_TIME | | |
2233 | XATTR_DOSINFO_ITIME; | |
2234 | ||
2235 | rc = ksmbd_vfs_set_dos_attrib_xattr(path->dentry, &da); | |
2236 | if (rc) | |
2237 | ksmbd_debug(SMB, "failed to store file attribute into xattr\n"); | |
2238 | } | |
2239 | ||
2240 | static void smb2_update_xattrs(struct ksmbd_tree_connect *tcon, | |
070fb21e | 2241 | struct path *path, struct ksmbd_file *fp) |
e2f34481 NJ |
2242 | { |
2243 | struct xattr_dos_attrib da; | |
2244 | int rc; | |
2245 | ||
2246 | fp->f_ci->m_fattr &= ~(ATTR_HIDDEN_LE | ATTR_SYSTEM_LE); | |
2247 | ||
2248 | /* get FileAttributes from XATTR_NAME_DOS_ATTRIBUTE */ | |
2249 | if (!test_share_config_flag(tcon->share_conf, | |
64b39f4a | 2250 | KSMBD_SHARE_FLAG_STORE_DOS_ATTRS)) |
e2f34481 NJ |
2251 | return; |
2252 | ||
2253 | rc = ksmbd_vfs_get_dos_attrib_xattr(path->dentry, &da); | |
2254 | if (rc > 0) { | |
2255 | fp->f_ci->m_fattr = cpu_to_le32(da.attr); | |
2256 | fp->create_time = da.create_time; | |
2257 | fp->itime = da.itime; | |
2258 | } | |
2259 | } | |
2260 | ||
64b39f4a | 2261 | static int smb2_creat(struct ksmbd_work *work, struct path *path, char *name, |
070fb21e | 2262 | int open_flags, umode_t posix_mode, bool is_dir) |
e2f34481 NJ |
2263 | { |
2264 | struct ksmbd_tree_connect *tcon = work->tcon; | |
2265 | struct ksmbd_share_config *share = tcon->share_conf; | |
2266 | umode_t mode; | |
2267 | int rc; | |
2268 | ||
2269 | if (!(open_flags & O_CREAT)) | |
2270 | return -EBADF; | |
2271 | ||
2272 | ksmbd_debug(SMB, "file does not exist, so creating\n"); | |
2273 | if (is_dir == true) { | |
2274 | ksmbd_debug(SMB, "creating directory\n"); | |
2275 | ||
2276 | mode = share_config_directory_mode(share, posix_mode); | |
2277 | rc = ksmbd_vfs_mkdir(work, name, mode); | |
2278 | if (rc) | |
2279 | return rc; | |
2280 | } else { | |
2281 | ksmbd_debug(SMB, "creating regular file\n"); | |
2282 | ||
2283 | mode = share_config_create_mode(share, posix_mode); | |
2284 | rc = ksmbd_vfs_create(work, name, mode); | |
2285 | if (rc) | |
2286 | return rc; | |
2287 | } | |
2288 | ||
2289 | rc = ksmbd_vfs_kern_path(name, 0, path, 0); | |
2290 | if (rc) { | |
bde1694a NJ |
2291 | pr_err("cannot get linux path (%s), err = %d\n", |
2292 | name, rc); | |
e2f34481 NJ |
2293 | return rc; |
2294 | } | |
2295 | return 0; | |
2296 | } | |
2297 | ||
2298 | static int smb2_create_sd_buffer(struct ksmbd_work *work, | |
070fb21e NJ |
2299 | struct smb2_create_req *req, |
2300 | struct dentry *dentry) | |
e2f34481 NJ |
2301 | { |
2302 | struct create_context *context; | |
2303 | int rc = -ENOENT; | |
2304 | ||
2305 | if (!req->CreateContextsOffset) | |
2306 | return rc; | |
2307 | ||
2308 | /* Parse SD BUFFER create contexts */ | |
2309 | context = smb2_find_context_vals(req, SMB2_CREATE_SD_BUFFER); | |
2310 | if (context && !IS_ERR(context)) { | |
2311 | struct create_sd_buf_req *sd_buf; | |
2312 | ||
2313 | ksmbd_debug(SMB, | |
070fb21e | 2314 | "Set ACLs using SMB2_CREATE_SD_BUFFER context\n"); |
e2f34481 NJ |
2315 | sd_buf = (struct create_sd_buf_req *)context; |
2316 | rc = set_info_sec(work->conn, work->tcon, dentry, &sd_buf->ntsd, | |
070fb21e | 2317 | le32_to_cpu(sd_buf->ccontext.DataLength), true); |
e2f34481 NJ |
2318 | } |
2319 | ||
2320 | return rc; | |
2321 | } | |
2322 | ||
3d47e546 NJ |
2323 | static void ksmbd_acls_fattr(struct smb_fattr *fattr, struct inode *inode) |
2324 | { | |
2325 | fattr->cf_uid = inode->i_uid; | |
2326 | fattr->cf_gid = inode->i_gid; | |
2327 | fattr->cf_mode = inode->i_mode; | |
2328 | fattr->cf_dacls = NULL; | |
2329 | ||
67d1c432 | 2330 | fattr->cf_acls = get_acl(inode, ACL_TYPE_ACCESS); |
3d47e546 | 2331 | if (S_ISDIR(inode->i_mode)) |
67d1c432 | 2332 | fattr->cf_dacls = get_acl(inode, ACL_TYPE_DEFAULT); |
3d47e546 NJ |
2333 | } |
2334 | ||
e2f34481 NJ |
2335 | /** |
2336 | * smb2_open() - handler for smb file open request | |
2337 | * @work: smb work containing request buffer | |
2338 | * | |
2339 | * Return: 0 on success, otherwise error | |
2340 | */ | |
2341 | int smb2_open(struct ksmbd_work *work) | |
2342 | { | |
2343 | struct ksmbd_conn *conn = work->conn; | |
2344 | struct ksmbd_session *sess = work->sess; | |
2345 | struct ksmbd_tree_connect *tcon = work->tcon; | |
2346 | struct smb2_create_req *req; | |
2347 | struct smb2_create_rsp *rsp, *rsp_org; | |
2348 | struct path path; | |
2349 | struct ksmbd_share_config *share = tcon->share_conf; | |
2350 | struct ksmbd_file *fp = NULL; | |
2351 | struct file *filp = NULL; | |
2352 | struct kstat stat; | |
2353 | struct create_context *context; | |
2354 | struct lease_ctx_info *lc = NULL; | |
2355 | struct create_ea_buf_req *ea_buf = NULL; | |
2356 | struct oplock_info *opinfo; | |
2357 | __le32 *next_ptr = NULL; | |
2358 | int req_op_level = 0, open_flags = 0, file_info = 0; | |
2359 | int rc = 0, len = 0; | |
2360 | int contxt_cnt = 0, query_disk_id = 0; | |
2361 | int maximal_access_ctxt = 0, posix_ctxt = 0; | |
2362 | int s_type = 0; | |
2363 | int next_off = 0; | |
2364 | char *name = NULL; | |
2365 | char *stream_name = NULL; | |
2366 | bool file_present = false, created = false, already_permitted = false; | |
e2f34481 NJ |
2367 | int share_ret, need_truncate = 0; |
2368 | u64 time; | |
2369 | umode_t posix_mode = 0; | |
2370 | __le32 daccess, maximal_access = 0; | |
2371 | ||
e5066499 | 2372 | rsp_org = work->response_buf; |
e2f34481 NJ |
2373 | WORK_BUFFERS(work, req, rsp); |
2374 | ||
2375 | if (req->hdr.NextCommand && !work->next_smb2_rcv_hdr_off && | |
64b39f4a | 2376 | (req->hdr.Flags & SMB2_FLAGS_RELATED_OPERATIONS)) { |
e2f34481 NJ |
2377 | ksmbd_debug(SMB, "invalid flag in chained command\n"); |
2378 | rsp->hdr.Status = STATUS_INVALID_PARAMETER; | |
2379 | smb2_set_err_rsp(work); | |
2380 | return -EINVAL; | |
2381 | } | |
2382 | ||
2383 | if (test_share_config_flag(share, KSMBD_SHARE_FLAG_PIPE)) { | |
2384 | ksmbd_debug(SMB, "IPC pipe create request\n"); | |
2385 | return create_smb2_pipe(work); | |
2386 | } | |
2387 | ||
2388 | if (req->NameLength) { | |
2389 | if ((req->CreateOptions & FILE_DIRECTORY_FILE_LE) && | |
64b39f4a | 2390 | *(char *)req->Buffer == '\\') { |
bde1694a | 2391 | pr_err("not allow directory name included leading slash\n"); |
e2f34481 NJ |
2392 | rc = -EINVAL; |
2393 | goto err_out1; | |
2394 | } | |
2395 | ||
2396 | name = smb2_get_name(share, | |
2397 | req->Buffer, | |
2398 | le16_to_cpu(req->NameLength), | |
2399 | work->conn->local_nls); | |
2400 | if (IS_ERR(name)) { | |
2401 | rc = PTR_ERR(name); | |
2402 | if (rc != -ENOMEM) | |
2403 | rc = -ENOENT; | |
2404 | goto err_out1; | |
2405 | } | |
2406 | ||
2407 | ksmbd_debug(SMB, "converted name = %s\n", name); | |
2408 | if (strchr(name, ':')) { | |
2409 | if (!test_share_config_flag(work->tcon->share_conf, | |
64b39f4a | 2410 | KSMBD_SHARE_FLAG_STREAMS)) { |
e2f34481 NJ |
2411 | rc = -EBADF; |
2412 | goto err_out1; | |
2413 | } | |
2414 | rc = parse_stream_name(name, &stream_name, &s_type); | |
2415 | if (rc < 0) | |
2416 | goto err_out1; | |
2417 | } | |
2418 | ||
2419 | rc = ksmbd_validate_filename(name); | |
2420 | if (rc < 0) | |
2421 | goto err_out1; | |
2422 | ||
2423 | if (ksmbd_share_veto_filename(share, name)) { | |
2424 | rc = -ENOENT; | |
2425 | ksmbd_debug(SMB, "Reject open(), vetoed file: %s\n", | |
070fb21e | 2426 | name); |
e2f34481 NJ |
2427 | goto err_out1; |
2428 | } | |
2429 | } else { | |
2430 | len = strlen(share->path); | |
2431 | ksmbd_debug(SMB, "share path len %d\n", len); | |
2432 | name = kmalloc(len + 1, GFP_KERNEL); | |
2433 | if (!name) { | |
2434 | rsp->hdr.Status = STATUS_NO_MEMORY; | |
2435 | rc = -ENOMEM; | |
2436 | goto err_out1; | |
2437 | } | |
2438 | ||
2439 | memcpy(name, share->path, len); | |
2440 | *(name + len) = '\0'; | |
2441 | } | |
2442 | ||
2443 | req_op_level = req->RequestedOplockLevel; | |
73f9dad5 | 2444 | if (req_op_level == SMB2_OPLOCK_LEVEL_LEASE) |
e2f34481 | 2445 | lc = parse_lease_state(req); |
e2f34481 | 2446 | |
64b39f4a | 2447 | if (le32_to_cpu(req->ImpersonationLevel) > le32_to_cpu(IL_DELEGATE_LE)) { |
bde1694a NJ |
2448 | pr_err("Invalid impersonationlevel : 0x%x\n", |
2449 | le32_to_cpu(req->ImpersonationLevel)); | |
e2f34481 NJ |
2450 | rc = -EIO; |
2451 | rsp->hdr.Status = STATUS_BAD_IMPERSONATION_LEVEL; | |
2452 | goto err_out1; | |
2453 | } | |
2454 | ||
2455 | if (req->CreateOptions && !(req->CreateOptions & CREATE_OPTIONS_MASK)) { | |
bde1694a NJ |
2456 | pr_err("Invalid create options : 0x%x\n", |
2457 | le32_to_cpu(req->CreateOptions)); | |
e2f34481 NJ |
2458 | rc = -EINVAL; |
2459 | goto err_out1; | |
2460 | } else { | |
e2f34481 | 2461 | if (req->CreateOptions & FILE_SEQUENTIAL_ONLY_LE && |
64b39f4a | 2462 | req->CreateOptions & FILE_RANDOM_ACCESS_LE) |
e2f34481 NJ |
2463 | req->CreateOptions = ~(FILE_SEQUENTIAL_ONLY_LE); |
2464 | ||
070fb21e NJ |
2465 | if (req->CreateOptions & |
2466 | (FILE_OPEN_BY_FILE_ID_LE | CREATE_TREE_CONNECTION | | |
2467 | FILE_RESERVE_OPFILTER_LE)) { | |
e2f34481 NJ |
2468 | rc = -EOPNOTSUPP; |
2469 | goto err_out1; | |
2470 | } | |
2471 | ||
2472 | if (req->CreateOptions & FILE_DIRECTORY_FILE_LE) { | |
2473 | if (req->CreateOptions & FILE_NON_DIRECTORY_FILE_LE) { | |
2474 | rc = -EINVAL; | |
2475 | goto err_out1; | |
64b39f4a | 2476 | } else if (req->CreateOptions & FILE_NO_COMPRESSION_LE) { |
e2f34481 | 2477 | req->CreateOptions = ~(FILE_NO_COMPRESSION_LE); |
64b39f4a | 2478 | } |
e2f34481 NJ |
2479 | } |
2480 | } | |
2481 | ||
2482 | if (le32_to_cpu(req->CreateDisposition) > | |
070fb21e | 2483 | le32_to_cpu(FILE_OVERWRITE_IF_LE)) { |
bde1694a NJ |
2484 | pr_err("Invalid create disposition : 0x%x\n", |
2485 | le32_to_cpu(req->CreateDisposition)); | |
e2f34481 NJ |
2486 | rc = -EINVAL; |
2487 | goto err_out1; | |
2488 | } | |
2489 | ||
2490 | if (!(req->DesiredAccess & DESIRED_ACCESS_MASK)) { | |
bde1694a NJ |
2491 | pr_err("Invalid desired access : 0x%x\n", |
2492 | le32_to_cpu(req->DesiredAccess)); | |
e2f34481 NJ |
2493 | rc = -EACCES; |
2494 | goto err_out1; | |
2495 | } | |
2496 | ||
64b39f4a | 2497 | if (req->FileAttributes && !(req->FileAttributes & ATTR_MASK_LE)) { |
bde1694a NJ |
2498 | pr_err("Invalid file attribute : 0x%x\n", |
2499 | le32_to_cpu(req->FileAttributes)); | |
e2f34481 NJ |
2500 | rc = -EINVAL; |
2501 | goto err_out1; | |
2502 | } | |
2503 | ||
2504 | if (req->CreateContextsOffset) { | |
2505 | /* Parse non-durable handle create contexts */ | |
2506 | context = smb2_find_context_vals(req, SMB2_CREATE_EA_BUFFER); | |
2507 | if (IS_ERR(context)) { | |
2508 | rc = check_context_err(context, SMB2_CREATE_EA_BUFFER); | |
2509 | if (rc < 0) | |
2510 | goto err_out1; | |
2511 | } else { | |
2512 | ea_buf = (struct create_ea_buf_req *)context; | |
2513 | if (req->CreateOptions & FILE_NO_EA_KNOWLEDGE_LE) { | |
2514 | rsp->hdr.Status = STATUS_ACCESS_DENIED; | |
2515 | rc = -EACCES; | |
2516 | goto err_out1; | |
2517 | } | |
2518 | } | |
2519 | ||
2520 | context = smb2_find_context_vals(req, | |
070fb21e | 2521 | SMB2_CREATE_QUERY_MAXIMAL_ACCESS_REQUEST); |
e2f34481 NJ |
2522 | if (IS_ERR(context)) { |
2523 | rc = check_context_err(context, | |
070fb21e | 2524 | SMB2_CREATE_QUERY_MAXIMAL_ACCESS_REQUEST); |
e2f34481 NJ |
2525 | if (rc < 0) |
2526 | goto err_out1; | |
2527 | } else { | |
2528 | ksmbd_debug(SMB, | |
070fb21e | 2529 | "get query maximal access context\n"); |
e2f34481 NJ |
2530 | maximal_access_ctxt = 1; |
2531 | } | |
2532 | ||
2533 | context = smb2_find_context_vals(req, | |
070fb21e | 2534 | SMB2_CREATE_TIMEWARP_REQUEST); |
e2f34481 NJ |
2535 | if (IS_ERR(context)) { |
2536 | rc = check_context_err(context, | |
070fb21e | 2537 | SMB2_CREATE_TIMEWARP_REQUEST); |
e2f34481 NJ |
2538 | if (rc < 0) |
2539 | goto err_out1; | |
2540 | } else { | |
2541 | ksmbd_debug(SMB, "get timewarp context\n"); | |
2542 | rc = -EBADF; | |
2543 | goto err_out1; | |
2544 | } | |
2545 | ||
2546 | if (tcon->posix_extensions) { | |
2547 | context = smb2_find_context_vals(req, | |
070fb21e | 2548 | SMB2_CREATE_TAG_POSIX); |
e2f34481 NJ |
2549 | if (IS_ERR(context)) { |
2550 | rc = check_context_err(context, | |
070fb21e | 2551 | SMB2_CREATE_TAG_POSIX); |
e2f34481 NJ |
2552 | if (rc < 0) |
2553 | goto err_out1; | |
2554 | } else { | |
2555 | struct create_posix *posix = | |
2556 | (struct create_posix *)context; | |
2557 | ksmbd_debug(SMB, "get posix context\n"); | |
2558 | ||
2559 | posix_mode = le32_to_cpu(posix->Mode); | |
2560 | posix_ctxt = 1; | |
2561 | } | |
2562 | } | |
2563 | } | |
2564 | ||
2565 | if (ksmbd_override_fsids(work)) { | |
2566 | rc = -ENOMEM; | |
2567 | goto err_out1; | |
2568 | } | |
2569 | ||
2570 | if (req->CreateOptions & FILE_DELETE_ON_CLOSE_LE) { | |
2571 | /* | |
2572 | * On delete request, instead of following up, need to | |
2573 | * look the current entity | |
2574 | */ | |
2575 | rc = ksmbd_vfs_kern_path(name, 0, &path, 1); | |
2576 | if (!rc) { | |
2577 | /* | |
2578 | * If file exists with under flags, return access | |
2579 | * denied error. | |
2580 | */ | |
2581 | if (req->CreateDisposition == FILE_OVERWRITE_IF_LE || | |
64b39f4a | 2582 | req->CreateDisposition == FILE_OPEN_IF_LE) { |
e2f34481 NJ |
2583 | rc = -EACCES; |
2584 | path_put(&path); | |
2585 | goto err_out; | |
2586 | } | |
2587 | ||
64b39f4a | 2588 | if (!test_tree_conn_flag(tcon, KSMBD_TREE_CONN_FLAG_WRITABLE)) { |
e2f34481 | 2589 | ksmbd_debug(SMB, |
070fb21e | 2590 | "User does not have write permission\n"); |
e2f34481 NJ |
2591 | rc = -EACCES; |
2592 | path_put(&path); | |
2593 | goto err_out; | |
2594 | } | |
2595 | } | |
2596 | } else { | |
2597 | if (test_share_config_flag(work->tcon->share_conf, | |
64b39f4a | 2598 | KSMBD_SHARE_FLAG_FOLLOW_SYMLINKS)) { |
e2f34481 NJ |
2599 | /* |
2600 | * Use LOOKUP_FOLLOW to follow the path of | |
2601 | * symlink in path buildup | |
2602 | */ | |
2603 | rc = ksmbd_vfs_kern_path(name, LOOKUP_FOLLOW, &path, 1); | |
2604 | if (rc) { /* Case for broken link ?*/ | |
2605 | rc = ksmbd_vfs_kern_path(name, 0, &path, 1); | |
2606 | } | |
2607 | } else { | |
2608 | rc = ksmbd_vfs_kern_path(name, 0, &path, 1); | |
2609 | if (!rc && d_is_symlink(path.dentry)) { | |
2610 | rc = -EACCES; | |
2611 | path_put(&path); | |
2612 | goto err_out; | |
2613 | } | |
2614 | } | |
2615 | } | |
2616 | ||
2617 | if (rc) { | |
2618 | if (rc == -EACCES) { | |
2619 | ksmbd_debug(SMB, | |
070fb21e | 2620 | "User does not have right permission\n"); |
e2f34481 NJ |
2621 | goto err_out; |
2622 | } | |
2623 | ksmbd_debug(SMB, "can not get linux path for %s, rc = %d\n", | |
070fb21e | 2624 | name, rc); |
e2f34481 NJ |
2625 | rc = 0; |
2626 | } else { | |
2627 | file_present = true; | |
2628 | generic_fillattr(&init_user_ns, d_inode(path.dentry), &stat); | |
2629 | } | |
2630 | if (stream_name) { | |
2631 | if (req->CreateOptions & FILE_DIRECTORY_FILE_LE) { | |
2632 | if (s_type == DATA_STREAM) { | |
2633 | rc = -EIO; | |
2634 | rsp->hdr.Status = STATUS_NOT_A_DIRECTORY; | |
2635 | } | |
2636 | } else { | |
2637 | if (S_ISDIR(stat.mode) && s_type == DATA_STREAM) { | |
2638 | rc = -EIO; | |
2639 | rsp->hdr.Status = STATUS_FILE_IS_A_DIRECTORY; | |
2640 | } | |
2641 | } | |
2642 | ||
2643 | if (req->CreateOptions & FILE_DIRECTORY_FILE_LE && | |
64b39f4a | 2644 | req->FileAttributes & ATTR_NORMAL_LE) { |
e2f34481 NJ |
2645 | rsp->hdr.Status = STATUS_NOT_A_DIRECTORY; |
2646 | rc = -EIO; | |
2647 | } | |
2648 | ||
2649 | if (rc < 0) | |
2650 | goto err_out; | |
2651 | } | |
2652 | ||
64b39f4a NJ |
2653 | if (file_present && req->CreateOptions & FILE_NON_DIRECTORY_FILE_LE && |
2654 | S_ISDIR(stat.mode) && !(req->CreateOptions & FILE_DELETE_ON_CLOSE_LE)) { | |
e2f34481 | 2655 | ksmbd_debug(SMB, "open() argument is a directory: %s, %x\n", |
070fb21e | 2656 | name, req->CreateOptions); |
e2f34481 NJ |
2657 | rsp->hdr.Status = STATUS_FILE_IS_A_DIRECTORY; |
2658 | rc = -EIO; | |
2659 | goto err_out; | |
2660 | } | |
2661 | ||
2662 | if (file_present && (req->CreateOptions & FILE_DIRECTORY_FILE_LE) && | |
64b39f4a NJ |
2663 | !(req->CreateDisposition == FILE_CREATE_LE) && |
2664 | !S_ISDIR(stat.mode)) { | |
e2f34481 NJ |
2665 | rsp->hdr.Status = STATUS_NOT_A_DIRECTORY; |
2666 | rc = -EIO; | |
2667 | goto err_out; | |
2668 | } | |
2669 | ||
2670 | if (!stream_name && file_present && | |
64b39f4a | 2671 | req->CreateDisposition == FILE_CREATE_LE) { |
e2f34481 NJ |
2672 | rc = -EEXIST; |
2673 | goto err_out; | |
2674 | } | |
2675 | ||
e2f34481 NJ |
2676 | daccess = smb_map_generic_desired_access(req->DesiredAccess); |
2677 | ||
2678 | if (file_present && !(req->CreateOptions & FILE_DELETE_ON_CLOSE_LE)) { | |
2679 | rc = smb_check_perm_dacl(conn, path.dentry, &daccess, | |
070fb21e | 2680 | sess->user->uid); |
e2f34481 NJ |
2681 | if (rc) |
2682 | goto err_out; | |
2683 | } | |
2684 | ||
2685 | if (daccess & FILE_MAXIMAL_ACCESS_LE) { | |
2686 | if (!file_present) { | |
2687 | daccess = cpu_to_le32(GENERIC_ALL_FLAGS); | |
2688 | } else { | |
2689 | rc = ksmbd_vfs_query_maximal_access(path.dentry, | |
2690 | &daccess); | |
2691 | if (rc) | |
2692 | goto err_out; | |
2693 | already_permitted = true; | |
2694 | } | |
2695 | maximal_access = daccess; | |
2696 | } | |
2697 | ||
070fb21e NJ |
2698 | open_flags = smb2_create_open_flags(file_present, daccess, |
2699 | req->CreateDisposition); | |
e2f34481 NJ |
2700 | |
2701 | if (!test_tree_conn_flag(tcon, KSMBD_TREE_CONN_FLAG_WRITABLE)) { | |
2702 | if (open_flags & O_CREAT) { | |
2703 | ksmbd_debug(SMB, | |
070fb21e | 2704 | "User does not have write permission\n"); |
e2f34481 NJ |
2705 | rc = -EACCES; |
2706 | goto err_out; | |
2707 | } | |
2708 | } | |
2709 | ||
2710 | /*create file if not present */ | |
2711 | if (!file_present) { | |
2712 | rc = smb2_creat(work, &path, name, open_flags, posix_mode, | |
070fb21e | 2713 | req->CreateOptions & FILE_DIRECTORY_FILE_LE); |
e2f34481 NJ |
2714 | if (rc) |
2715 | goto err_out; | |
2716 | ||
2717 | created = true; | |
2718 | if (ea_buf) { | |
2719 | rc = smb2_set_ea(&ea_buf->ea, &path); | |
2720 | if (rc == -EOPNOTSUPP) | |
2721 | rc = 0; | |
2722 | else if (rc) | |
2723 | goto err_out; | |
2724 | } | |
2725 | } else if (!already_permitted) { | |
2726 | bool may_delete; | |
2727 | ||
2728 | may_delete = daccess & FILE_DELETE_LE || | |
2729 | req->CreateOptions & FILE_DELETE_ON_CLOSE_LE; | |
2730 | ||
2731 | /* FILE_READ_ATTRIBUTE is allowed without inode_permission, | |
2732 | * because execute(search) permission on a parent directory, | |
2733 | * is already granted. | |
2734 | */ | |
64b39f4a | 2735 | if (daccess & ~(FILE_READ_ATTRIBUTES_LE | FILE_READ_CONTROL_LE)) { |
ff1d5727 | 2736 | rc = ksmbd_vfs_inode_permission(path.dentry, |
070fb21e NJ |
2737 | open_flags & O_ACCMODE, |
2738 | may_delete); | |
ff1d5727 | 2739 | if (rc) |
e2f34481 | 2740 | goto err_out; |
e2f34481 NJ |
2741 | } |
2742 | } | |
2743 | ||
2744 | rc = ksmbd_query_inode_status(d_inode(path.dentry->d_parent)); | |
2745 | if (rc == KSMBD_INODE_STATUS_PENDING_DELETE) { | |
2746 | rc = -EBUSY; | |
2747 | goto err_out; | |
2748 | } | |
2749 | ||
2750 | rc = 0; | |
2751 | filp = dentry_open(&path, open_flags, current_cred()); | |
2752 | if (IS_ERR(filp)) { | |
2753 | rc = PTR_ERR(filp); | |
bde1694a | 2754 | pr_err("dentry open for dir failed, rc %d\n", rc); |
e2f34481 NJ |
2755 | goto err_out; |
2756 | } | |
2757 | ||
2758 | if (file_present) { | |
2759 | if (!(open_flags & O_TRUNC)) | |
2760 | file_info = FILE_OPENED; | |
2761 | else | |
2762 | file_info = FILE_OVERWRITTEN; | |
2763 | ||
070fb21e NJ |
2764 | if ((req->CreateDisposition & FILE_CREATE_MASK_LE) == |
2765 | FILE_SUPERSEDE_LE) | |
e2f34481 | 2766 | file_info = FILE_SUPERSEDED; |
64b39f4a | 2767 | } else if (open_flags & O_CREAT) { |
e2f34481 | 2768 | file_info = FILE_CREATED; |
64b39f4a | 2769 | } |
e2f34481 NJ |
2770 | |
2771 | ksmbd_vfs_set_fadvise(filp, req->CreateOptions); | |
2772 | ||
2773 | /* Obtain Volatile-ID */ | |
2774 | fp = ksmbd_open_fd(work, filp); | |
2775 | if (IS_ERR(fp)) { | |
2776 | fput(filp); | |
2777 | rc = PTR_ERR(fp); | |
2778 | fp = NULL; | |
2779 | goto err_out; | |
2780 | } | |
2781 | ||
2782 | /* Get Persistent-ID */ | |
2783 | ksmbd_open_durable_fd(fp); | |
2784 | if (!HAS_FILE_ID(fp->persistent_id)) { | |
2785 | rc = -ENOMEM; | |
2786 | goto err_out; | |
2787 | } | |
2788 | ||
2789 | fp->filename = name; | |
2790 | fp->cdoption = req->CreateDisposition; | |
2791 | fp->daccess = daccess; | |
2792 | fp->saccess = req->ShareAccess; | |
2793 | fp->coption = req->CreateOptions; | |
2794 | ||
2795 | /* Set default windows and posix acls if creating new file */ | |
2796 | if (created) { | |
2797 | int posix_acl_rc; | |
fba08fa0 | 2798 | struct inode *inode = d_inode(path.dentry); |
e2f34481 | 2799 | |
fba08fa0 | 2800 | posix_acl_rc = ksmbd_vfs_inherit_posix_acl(inode, d_inode(path.dentry->d_parent)); |
e2f34481 NJ |
2801 | if (posix_acl_rc) |
2802 | ksmbd_debug(SMB, "inherit posix acl failed : %d\n", posix_acl_rc); | |
2803 | ||
2804 | if (test_share_config_flag(work->tcon->share_conf, | |
64b39f4a | 2805 | KSMBD_SHARE_FLAG_ACL_XATTR)) { |
e2f34481 | 2806 | rc = smb_inherit_dacl(conn, path.dentry, sess->user->uid, |
070fb21e | 2807 | sess->user->gid); |
e2f34481 NJ |
2808 | } |
2809 | ||
2810 | if (rc) { | |
2811 | rc = smb2_create_sd_buffer(work, req, path.dentry); | |
2812 | if (rc) { | |
2813 | if (posix_acl_rc) | |
2814 | ksmbd_vfs_set_init_posix_acl(inode); | |
2815 | ||
2816 | if (test_share_config_flag(work->tcon->share_conf, | |
64b39f4a | 2817 | KSMBD_SHARE_FLAG_ACL_XATTR)) { |
e2f34481 NJ |
2818 | struct smb_fattr fattr; |
2819 | struct smb_ntsd *pntsd; | |
3d47e546 | 2820 | int pntsd_size, ace_num = 0; |
e2f34481 | 2821 | |
3d47e546 | 2822 | ksmbd_acls_fattr(&fattr, inode); |
e6b1059f MM |
2823 | if (fattr.cf_acls) |
2824 | ace_num = fattr.cf_acls->a_count; | |
3d47e546 NJ |
2825 | if (fattr.cf_dacls) |
2826 | ace_num += fattr.cf_dacls->a_count; | |
e2f34481 NJ |
2827 | |
2828 | pntsd = kmalloc(sizeof(struct smb_ntsd) + | |
64b39f4a | 2829 | sizeof(struct smb_sid) * 3 + |
e2f34481 | 2830 | sizeof(struct smb_acl) + |
64b39f4a | 2831 | sizeof(struct smb_ace) * ace_num * 2, |
e2f34481 NJ |
2832 | GFP_KERNEL); |
2833 | if (!pntsd) | |
2834 | goto err_out; | |
2835 | ||
2836 | rc = build_sec_desc(pntsd, NULL, | |
070fb21e NJ |
2837 | OWNER_SECINFO | |
2838 | GROUP_SECINFO | | |
2839 | DACL_SECINFO, | |
2840 | &pntsd_size, &fattr); | |
e2f34481 NJ |
2841 | posix_acl_release(fattr.cf_acls); |
2842 | posix_acl_release(fattr.cf_dacls); | |
2843 | ||
2844 | rc = ksmbd_vfs_set_sd_xattr(conn, | |
070fb21e NJ |
2845 | path.dentry, |
2846 | pntsd, | |
2847 | pntsd_size); | |
3d47e546 | 2848 | kfree(pntsd); |
e2f34481 | 2849 | if (rc) |
bde1694a NJ |
2850 | pr_err("failed to store ntacl in xattr : %d\n", |
2851 | rc); | |
e2f34481 NJ |
2852 | } |
2853 | } | |
2854 | } | |
2855 | rc = 0; | |
2856 | } | |
2857 | ||
2858 | if (stream_name) { | |
2859 | rc = smb2_set_stream_name_xattr(&path, | |
2860 | fp, | |
2861 | stream_name, | |
2862 | s_type); | |
2863 | if (rc) | |
2864 | goto err_out; | |
2865 | file_info = FILE_CREATED; | |
2866 | } | |
2867 | ||
2868 | fp->attrib_only = !(req->DesiredAccess & ~(FILE_READ_ATTRIBUTES_LE | | |
2869 | FILE_WRITE_ATTRIBUTES_LE | FILE_SYNCHRONIZE_LE)); | |
64b39f4a NJ |
2870 | if (!S_ISDIR(file_inode(filp)->i_mode) && open_flags & O_TRUNC && |
2871 | !fp->attrib_only && !stream_name) { | |
e2f34481 NJ |
2872 | smb_break_all_oplock(work, fp); |
2873 | need_truncate = 1; | |
2874 | } | |
2875 | ||
2876 | /* fp should be searchable through ksmbd_inode.m_fp_list | |
2877 | * after daccess, saccess, attrib_only, and stream are | |
2878 | * initialized. | |
2879 | */ | |
2880 | write_lock(&fp->f_ci->m_lock); | |
2881 | list_add(&fp->node, &fp->f_ci->m_fp_list); | |
2882 | write_unlock(&fp->f_ci->m_lock); | |
2883 | ||
2884 | rc = ksmbd_vfs_getattr(&path, &stat); | |
2885 | if (rc) { | |
2886 | generic_fillattr(&init_user_ns, d_inode(path.dentry), &stat); | |
2887 | rc = 0; | |
2888 | } | |
2889 | ||
2890 | /* Check delete pending among previous fp before oplock break */ | |
2891 | if (ksmbd_inode_pending_delete(fp)) { | |
2892 | rc = -EBUSY; | |
2893 | goto err_out; | |
2894 | } | |
2895 | ||
2896 | share_ret = ksmbd_smb_check_shared_mode(fp->filp, fp); | |
64b39f4a NJ |
2897 | if (!test_share_config_flag(work->tcon->share_conf, KSMBD_SHARE_FLAG_OPLOCKS) || |
2898 | (req_op_level == SMB2_OPLOCK_LEVEL_LEASE && | |
2899 | !(conn->vals->capabilities & SMB2_GLOBAL_CAP_LEASING))) { | |
e2f34481 NJ |
2900 | if (share_ret < 0 && !S_ISDIR(FP_INODE(fp)->i_mode)) { |
2901 | rc = share_ret; | |
2902 | goto err_out; | |
2903 | } | |
2904 | } else { | |
2905 | if (req_op_level == SMB2_OPLOCK_LEVEL_LEASE) { | |
2906 | req_op_level = smb2_map_lease_to_oplock(lc->req_state); | |
2907 | ksmbd_debug(SMB, | |
070fb21e NJ |
2908 | "lease req for(%s) req oplock state 0x%x, lease state 0x%x\n", |
2909 | name, req_op_level, lc->req_state); | |
e2f34481 NJ |
2910 | rc = find_same_lease_key(sess, fp->f_ci, lc); |
2911 | if (rc) | |
2912 | goto err_out; | |
2913 | } else if (open_flags == O_RDONLY && | |
64b39f4a NJ |
2914 | (req_op_level == SMB2_OPLOCK_LEVEL_BATCH || |
2915 | req_op_level == SMB2_OPLOCK_LEVEL_EXCLUSIVE)) | |
e2f34481 NJ |
2916 | req_op_level = SMB2_OPLOCK_LEVEL_II; |
2917 | ||
2918 | rc = smb_grant_oplock(work, req_op_level, | |
2919 | fp->persistent_id, fp, | |
2920 | le32_to_cpu(req->hdr.Id.SyncId.TreeId), | |
2921 | lc, share_ret); | |
2922 | if (rc < 0) | |
2923 | goto err_out; | |
2924 | } | |
2925 | ||
2926 | if (req->CreateOptions & FILE_DELETE_ON_CLOSE_LE) | |
2927 | ksmbd_fd_set_delete_on_close(fp, file_info); | |
2928 | ||
2929 | if (need_truncate) { | |
2930 | rc = smb2_create_truncate(&path); | |
2931 | if (rc) | |
2932 | goto err_out; | |
2933 | } | |
2934 | ||
2935 | if (req->CreateContextsOffset) { | |
2936 | struct create_alloc_size_req *az_req; | |
2937 | ||
070fb21e NJ |
2938 | az_req = (struct create_alloc_size_req *)smb2_find_context_vals(req, |
2939 | SMB2_CREATE_ALLOCATION_SIZE); | |
e2f34481 NJ |
2940 | if (IS_ERR(az_req)) { |
2941 | rc = check_context_err(az_req, | |
070fb21e | 2942 | SMB2_CREATE_ALLOCATION_SIZE); |
e2f34481 NJ |
2943 | if (rc < 0) |
2944 | goto err_out; | |
2945 | } else { | |
2946 | loff_t alloc_size = le64_to_cpu(az_req->AllocationSize); | |
2947 | int err; | |
2948 | ||
2949 | ksmbd_debug(SMB, | |
070fb21e NJ |
2950 | "request smb2 create allocate size : %llu\n", |
2951 | alloc_size); | |
e8c06191 NJ |
2952 | smb_break_all_levII_oplock(work, fp, 1); |
2953 | err = vfs_fallocate(fp->filp, FALLOC_FL_KEEP_SIZE, 0, | |
2954 | alloc_size); | |
e2f34481 NJ |
2955 | if (err < 0) |
2956 | ksmbd_debug(SMB, | |
e8c06191 | 2957 | "vfs_fallocate is failed : %d\n", |
070fb21e | 2958 | err); |
e2f34481 NJ |
2959 | } |
2960 | ||
64b39f4a | 2961 | context = smb2_find_context_vals(req, SMB2_CREATE_QUERY_ON_DISK_ID); |
e2f34481 | 2962 | if (IS_ERR(context)) { |
64b39f4a | 2963 | rc = check_context_err(context, SMB2_CREATE_QUERY_ON_DISK_ID); |
e2f34481 NJ |
2964 | if (rc < 0) |
2965 | goto err_out; | |
2966 | } else { | |
2967 | ksmbd_debug(SMB, "get query on disk id context\n"); | |
2968 | query_disk_id = 1; | |
2969 | } | |
2970 | } | |
2971 | ||
2972 | if (stat.result_mask & STATX_BTIME) | |
2973 | fp->create_time = ksmbd_UnixTimeToNT(stat.btime); | |
2974 | else | |
2975 | fp->create_time = ksmbd_UnixTimeToNT(stat.ctime); | |
2976 | if (req->FileAttributes || fp->f_ci->m_fattr == 0) | |
070fb21e NJ |
2977 | fp->f_ci->m_fattr = |
2978 | cpu_to_le32(smb2_get_dos_mode(&stat, le32_to_cpu(req->FileAttributes))); | |
e2f34481 NJ |
2979 | |
2980 | if (!created) | |
2981 | smb2_update_xattrs(tcon, &path, fp); | |
2982 | else | |
2983 | smb2_new_xattrs(tcon, &path, fp); | |
2984 | ||
2985 | memcpy(fp->client_guid, conn->ClientGUID, SMB2_CLIENT_GUID_SIZE); | |
2986 | ||
e2f34481 NJ |
2987 | generic_fillattr(&init_user_ns, FP_INODE(fp), &stat); |
2988 | ||
2989 | rsp->StructureSize = cpu_to_le16(89); | |
2990 | rcu_read_lock(); | |
2991 | opinfo = rcu_dereference(fp->f_opinfo); | |
2992 | rsp->OplockLevel = opinfo != NULL ? opinfo->level : 0; | |
2993 | rcu_read_unlock(); | |
2994 | rsp->Reserved = 0; | |
2995 | rsp->CreateAction = cpu_to_le32(file_info); | |
2996 | rsp->CreationTime = cpu_to_le64(fp->create_time); | |
2997 | time = ksmbd_UnixTimeToNT(stat.atime); | |
2998 | rsp->LastAccessTime = cpu_to_le64(time); | |
2999 | time = ksmbd_UnixTimeToNT(stat.mtime); | |
3000 | rsp->LastWriteTime = cpu_to_le64(time); | |
3001 | time = ksmbd_UnixTimeToNT(stat.ctime); | |
3002 | rsp->ChangeTime = cpu_to_le64(time); | |
3003 | rsp->AllocationSize = S_ISDIR(stat.mode) ? 0 : | |
3004 | cpu_to_le64(stat.blocks << 9); | |
3005 | rsp->EndofFile = S_ISDIR(stat.mode) ? 0 : cpu_to_le64(stat.size); | |
3006 | rsp->FileAttributes = fp->f_ci->m_fattr; | |
3007 | ||
3008 | rsp->Reserved2 = 0; | |
3009 | ||
3010 | rsp->PersistentFileId = cpu_to_le64(fp->persistent_id); | |
3011 | rsp->VolatileFileId = cpu_to_le64(fp->volatile_id); | |
3012 | ||
3013 | rsp->CreateContextsOffset = 0; | |
3014 | rsp->CreateContextsLength = 0; | |
3015 | inc_rfc1001_len(rsp_org, 88); /* StructureSize - 1*/ | |
3016 | ||
3017 | /* If lease is request send lease context response */ | |
3018 | if (opinfo && opinfo->is_lease) { | |
3019 | struct create_context *lease_ccontext; | |
3020 | ||
3021 | ksmbd_debug(SMB, "lease granted on(%s) lease state 0x%x\n", | |
070fb21e | 3022 | name, opinfo->o_lease->state); |
e2f34481 NJ |
3023 | rsp->OplockLevel = SMB2_OPLOCK_LEVEL_LEASE; |
3024 | ||
3025 | lease_ccontext = (struct create_context *)rsp->Buffer; | |
3026 | contxt_cnt++; | |
3027 | create_lease_buf(rsp->Buffer, opinfo->o_lease); | |
3028 | le32_add_cpu(&rsp->CreateContextsLength, | |
3029 | conn->vals->create_lease_size); | |
3030 | inc_rfc1001_len(rsp_org, conn->vals->create_lease_size); | |
3031 | next_ptr = &lease_ccontext->Next; | |
3032 | next_off = conn->vals->create_lease_size; | |
3033 | } | |
3034 | ||
e2f34481 NJ |
3035 | if (maximal_access_ctxt) { |
3036 | struct create_context *mxac_ccontext; | |
3037 | ||
3038 | if (maximal_access == 0) | |
3039 | ksmbd_vfs_query_maximal_access(path.dentry, | |
3040 | &maximal_access); | |
3041 | mxac_ccontext = (struct create_context *)(rsp->Buffer + | |
3042 | le32_to_cpu(rsp->CreateContextsLength)); | |
3043 | contxt_cnt++; | |
3044 | create_mxac_rsp_buf(rsp->Buffer + | |
3045 | le32_to_cpu(rsp->CreateContextsLength), | |
3046 | le32_to_cpu(maximal_access)); | |
3047 | le32_add_cpu(&rsp->CreateContextsLength, | |
3048 | conn->vals->create_mxac_size); | |
3049 | inc_rfc1001_len(rsp_org, conn->vals->create_mxac_size); | |
3050 | if (next_ptr) | |
3051 | *next_ptr = cpu_to_le32(next_off); | |
3052 | next_ptr = &mxac_ccontext->Next; | |
3053 | next_off = conn->vals->create_mxac_size; | |
3054 | } | |
3055 | ||
3056 | if (query_disk_id) { | |
3057 | struct create_context *disk_id_ccontext; | |
3058 | ||
3059 | disk_id_ccontext = (struct create_context *)(rsp->Buffer + | |
3060 | le32_to_cpu(rsp->CreateContextsLength)); | |
3061 | contxt_cnt++; | |
3062 | create_disk_id_rsp_buf(rsp->Buffer + | |
3063 | le32_to_cpu(rsp->CreateContextsLength), | |
3064 | stat.ino, tcon->id); | |
3065 | le32_add_cpu(&rsp->CreateContextsLength, | |
3066 | conn->vals->create_disk_id_size); | |
3067 | inc_rfc1001_len(rsp_org, conn->vals->create_disk_id_size); | |
3068 | if (next_ptr) | |
3069 | *next_ptr = cpu_to_le32(next_off); | |
3070 | next_ptr = &disk_id_ccontext->Next; | |
3071 | next_off = conn->vals->create_disk_id_size; | |
3072 | } | |
3073 | ||
3074 | if (posix_ctxt) { | |
e2f34481 NJ |
3075 | contxt_cnt++; |
3076 | create_posix_rsp_buf(rsp->Buffer + | |
3077 | le32_to_cpu(rsp->CreateContextsLength), | |
3078 | fp); | |
3079 | le32_add_cpu(&rsp->CreateContextsLength, | |
3080 | conn->vals->create_posix_size); | |
3081 | inc_rfc1001_len(rsp_org, conn->vals->create_posix_size); | |
3082 | if (next_ptr) | |
3083 | *next_ptr = cpu_to_le32(next_off); | |
3084 | } | |
3085 | ||
3086 | if (contxt_cnt > 0) { | |
3087 | rsp->CreateContextsOffset = | |
3088 | cpu_to_le32(offsetof(struct smb2_create_rsp, Buffer) | |
3089 | - 4); | |
3090 | } | |
3091 | ||
3092 | err_out: | |
3093 | if (file_present || created) | |
3094 | path_put(&path); | |
3095 | ksmbd_revert_fsids(work); | |
3096 | err_out1: | |
3097 | if (rc) { | |
3098 | if (rc == -EINVAL) | |
3099 | rsp->hdr.Status = STATUS_INVALID_PARAMETER; | |
3100 | else if (rc == -EOPNOTSUPP) | |
3101 | rsp->hdr.Status = STATUS_NOT_SUPPORTED; | |
ff1d5727 | 3102 | else if (rc == -EACCES || rc == -ESTALE) |
e2f34481 NJ |
3103 | rsp->hdr.Status = STATUS_ACCESS_DENIED; |
3104 | else if (rc == -ENOENT) | |
3105 | rsp->hdr.Status = STATUS_OBJECT_NAME_INVALID; | |
3106 | else if (rc == -EPERM) | |
3107 | rsp->hdr.Status = STATUS_SHARING_VIOLATION; | |
3108 | else if (rc == -EBUSY) | |
3109 | rsp->hdr.Status = STATUS_DELETE_PENDING; | |
3110 | else if (rc == -EBADF) | |
3111 | rsp->hdr.Status = STATUS_OBJECT_NAME_NOT_FOUND; | |
3112 | else if (rc == -ENOEXEC) | |
3113 | rsp->hdr.Status = STATUS_DUPLICATE_OBJECTID; | |
3114 | else if (rc == -ENXIO) | |
3115 | rsp->hdr.Status = STATUS_NO_SUCH_DEVICE; | |
3116 | else if (rc == -EEXIST) | |
3117 | rsp->hdr.Status = STATUS_OBJECT_NAME_COLLISION; | |
3118 | else if (rc == -EMFILE) | |
3119 | rsp->hdr.Status = STATUS_INSUFFICIENT_RESOURCES; | |
3120 | if (!rsp->hdr.Status) | |
3121 | rsp->hdr.Status = STATUS_UNEXPECTED_IO_ERROR; | |
3122 | ||
3123 | if (!fp || !fp->filename) | |
3124 | kfree(name); | |
3125 | if (fp) | |
3126 | ksmbd_fd_put(work, fp); | |
3127 | smb2_set_err_rsp(work); | |
3128 | ksmbd_debug(SMB, "Error response: %x\n", rsp->hdr.Status); | |
3129 | } | |
3130 | ||
3131 | kfree(lc); | |
3132 | ||
3133 | return 0; | |
3134 | } | |
3135 | ||
3136 | static int readdir_info_level_struct_sz(int info_level) | |
3137 | { | |
3138 | switch (info_level) { | |
3139 | case FILE_FULL_DIRECTORY_INFORMATION: | |
3140 | return sizeof(struct file_full_directory_info); | |
3141 | case FILE_BOTH_DIRECTORY_INFORMATION: | |
3142 | return sizeof(struct file_both_directory_info); | |
3143 | case FILE_DIRECTORY_INFORMATION: | |
3144 | return sizeof(struct file_directory_info); | |
3145 | case FILE_NAMES_INFORMATION: | |
3146 | return sizeof(struct file_names_info); | |
3147 | case FILEID_FULL_DIRECTORY_INFORMATION: | |
3148 | return sizeof(struct file_id_full_dir_info); | |
3149 | case FILEID_BOTH_DIRECTORY_INFORMATION: | |
3150 | return sizeof(struct file_id_both_directory_info); | |
3151 | case SMB_FIND_FILE_POSIX_INFO: | |
3152 | return sizeof(struct smb2_posix_info); | |
3153 | default: | |
3154 | return -EOPNOTSUPP; | |
3155 | } | |
3156 | } | |
3157 | ||
3158 | static int dentry_name(struct ksmbd_dir_info *d_info, int info_level) | |
3159 | { | |
3160 | switch (info_level) { | |
3161 | case FILE_FULL_DIRECTORY_INFORMATION: | |
3162 | { | |
3163 | struct file_full_directory_info *ffdinfo; | |
3164 | ||
3165 | ffdinfo = (struct file_full_directory_info *)d_info->rptr; | |
3166 | d_info->rptr += le32_to_cpu(ffdinfo->NextEntryOffset); | |
3167 | d_info->name = ffdinfo->FileName; | |
3168 | d_info->name_len = le32_to_cpu(ffdinfo->FileNameLength); | |
3169 | return 0; | |
3170 | } | |
3171 | case FILE_BOTH_DIRECTORY_INFORMATION: | |
3172 | { | |
3173 | struct file_both_directory_info *fbdinfo; | |
3174 | ||
3175 | fbdinfo = (struct file_both_directory_info *)d_info->rptr; | |
3176 | d_info->rptr += le32_to_cpu(fbdinfo->NextEntryOffset); | |
3177 | d_info->name = fbdinfo->FileName; | |
3178 | d_info->name_len = le32_to_cpu(fbdinfo->FileNameLength); | |
3179 | return 0; | |
3180 | } | |
3181 | case FILE_DIRECTORY_INFORMATION: | |
3182 | { | |
3183 | struct file_directory_info *fdinfo; | |
3184 | ||
3185 | fdinfo = (struct file_directory_info *)d_info->rptr; | |
3186 | d_info->rptr += le32_to_cpu(fdinfo->NextEntryOffset); | |
3187 | d_info->name = fdinfo->FileName; | |
3188 | d_info->name_len = le32_to_cpu(fdinfo->FileNameLength); | |
3189 | return 0; | |
3190 | } | |
3191 | case FILE_NAMES_INFORMATION: | |
3192 | { | |
3193 | struct file_names_info *fninfo; | |
3194 | ||
3195 | fninfo = (struct file_names_info *)d_info->rptr; | |
3196 | d_info->rptr += le32_to_cpu(fninfo->NextEntryOffset); | |
3197 | d_info->name = fninfo->FileName; | |
3198 | d_info->name_len = le32_to_cpu(fninfo->FileNameLength); | |
3199 | return 0; | |
3200 | } | |
3201 | case FILEID_FULL_DIRECTORY_INFORMATION: | |
3202 | { | |
3203 | struct file_id_full_dir_info *dinfo; | |
3204 | ||
3205 | dinfo = (struct file_id_full_dir_info *)d_info->rptr; | |
3206 | d_info->rptr += le32_to_cpu(dinfo->NextEntryOffset); | |
3207 | d_info->name = dinfo->FileName; | |
3208 | d_info->name_len = le32_to_cpu(dinfo->FileNameLength); | |
3209 | return 0; | |
3210 | } | |
3211 | case FILEID_BOTH_DIRECTORY_INFORMATION: | |
3212 | { | |
3213 | struct file_id_both_directory_info *fibdinfo; | |
3214 | ||
3215 | fibdinfo = (struct file_id_both_directory_info *)d_info->rptr; | |
3216 | d_info->rptr += le32_to_cpu(fibdinfo->NextEntryOffset); | |
3217 | d_info->name = fibdinfo->FileName; | |
3218 | d_info->name_len = le32_to_cpu(fibdinfo->FileNameLength); | |
3219 | return 0; | |
3220 | } | |
3221 | case SMB_FIND_FILE_POSIX_INFO: | |
3222 | { | |
3223 | struct smb2_posix_info *posix_info; | |
3224 | ||
3225 | posix_info = (struct smb2_posix_info *)d_info->rptr; | |
3226 | d_info->rptr += le32_to_cpu(posix_info->NextEntryOffset); | |
3227 | d_info->name = posix_info->name; | |
3228 | d_info->name_len = le32_to_cpu(posix_info->name_len); | |
3229 | return 0; | |
3230 | } | |
3231 | default: | |
3232 | return -EINVAL; | |
3233 | } | |
3234 | } | |
3235 | ||
3236 | /** | |
3237 | * smb2_populate_readdir_entry() - encode directory entry in smb2 response | |
3238 | * buffer | |
3239 | * @conn: connection instance | |
3240 | * @info_level: smb information level | |
3241 | * @d_info: structure included variables for query dir | |
3242 | * @ksmbd_kstat: ksmbd wrapper of dirent stat information | |
3243 | * | |
3244 | * if directory has many entries, find first can't read it fully. | |
3245 | * find next might be called multiple times to read remaining dir entries | |
3246 | * | |
3247 | * Return: 0 on success, otherwise error | |
3248 | */ | |
64b39f4a | 3249 | static int smb2_populate_readdir_entry(struct ksmbd_conn *conn, int info_level, |
070fb21e NJ |
3250 | struct ksmbd_dir_info *d_info, |
3251 | struct ksmbd_kstat *ksmbd_kstat) | |
e2f34481 NJ |
3252 | { |
3253 | int next_entry_offset = 0; | |
3254 | char *conv_name; | |
3255 | int conv_len; | |
3256 | void *kstat; | |
3257 | int struct_sz; | |
3258 | ||
3259 | conv_name = ksmbd_convert_dir_info_name(d_info, | |
3260 | conn->local_nls, | |
3261 | &conv_len); | |
3262 | if (!conv_name) | |
3263 | return -ENOMEM; | |
3264 | ||
3265 | /* Somehow the name has only terminating NULL bytes */ | |
3266 | if (conv_len < 0) { | |
3267 | kfree(conv_name); | |
3268 | return -EINVAL; | |
3269 | } | |
3270 | ||
3271 | struct_sz = readdir_info_level_struct_sz(info_level); | |
3272 | next_entry_offset = ALIGN(struct_sz - 1 + conv_len, | |
3273 | KSMBD_DIR_INFO_ALIGNMENT); | |
3274 | ||
3275 | if (next_entry_offset > d_info->out_buf_len) { | |
3276 | d_info->out_buf_len = 0; | |
3277 | return -ENOSPC; | |
3278 | } | |
3279 | ||
3280 | kstat = d_info->wptr; | |
3281 | if (info_level != FILE_NAMES_INFORMATION) | |
3282 | kstat = ksmbd_vfs_init_kstat(&d_info->wptr, ksmbd_kstat); | |
3283 | ||
3284 | switch (info_level) { | |
3285 | case FILE_FULL_DIRECTORY_INFORMATION: | |
3286 | { | |
3287 | struct file_full_directory_info *ffdinfo; | |
3288 | ||
3289 | ffdinfo = (struct file_full_directory_info *)kstat; | |
3290 | ffdinfo->FileNameLength = cpu_to_le32(conv_len); | |
3291 | ffdinfo->EaSize = | |
3292 | smb2_get_reparse_tag_special_file(ksmbd_kstat->kstat->mode); | |
3293 | if (ffdinfo->EaSize) | |
3294 | ffdinfo->ExtFileAttributes = ATTR_REPARSE_POINT_LE; | |
3295 | if (d_info->hide_dot_file && d_info->name[0] == '.') | |
3296 | ffdinfo->ExtFileAttributes |= ATTR_HIDDEN_LE; | |
3297 | memcpy(ffdinfo->FileName, conv_name, conv_len); | |
3298 | ffdinfo->NextEntryOffset = cpu_to_le32(next_entry_offset); | |
3299 | break; | |
3300 | } | |
3301 | case FILE_BOTH_DIRECTORY_INFORMATION: | |
3302 | { | |
3303 | struct file_both_directory_info *fbdinfo; | |
3304 | ||
3305 | fbdinfo = (struct file_both_directory_info *)kstat; | |
3306 | fbdinfo->FileNameLength = cpu_to_le32(conv_len); | |
3307 | fbdinfo->EaSize = | |
3308 | smb2_get_reparse_tag_special_file(ksmbd_kstat->kstat->mode); | |
3309 | if (fbdinfo->EaSize) | |
3310 | fbdinfo->ExtFileAttributes = ATTR_REPARSE_POINT_LE; | |
3311 | fbdinfo->ShortNameLength = 0; | |
3312 | fbdinfo->Reserved = 0; | |
3313 | if (d_info->hide_dot_file && d_info->name[0] == '.') | |
3314 | fbdinfo->ExtFileAttributes |= ATTR_HIDDEN_LE; | |
3315 | memcpy(fbdinfo->FileName, conv_name, conv_len); | |
3316 | fbdinfo->NextEntryOffset = cpu_to_le32(next_entry_offset); | |
3317 | break; | |
3318 | } | |
3319 | case FILE_DIRECTORY_INFORMATION: | |
3320 | { | |
3321 | struct file_directory_info *fdinfo; | |
3322 | ||
3323 | fdinfo = (struct file_directory_info *)kstat; | |
3324 | fdinfo->FileNameLength = cpu_to_le32(conv_len); | |
3325 | if (d_info->hide_dot_file && d_info->name[0] == '.') | |
3326 | fdinfo->ExtFileAttributes |= ATTR_HIDDEN_LE; | |
3327 | memcpy(fdinfo->FileName, conv_name, conv_len); | |
3328 | fdinfo->NextEntryOffset = cpu_to_le32(next_entry_offset); | |
3329 | break; | |
3330 | } | |
3331 | case FILE_NAMES_INFORMATION: | |
3332 | { | |
3333 | struct file_names_info *fninfo; | |
3334 | ||
3335 | fninfo = (struct file_names_info *)kstat; | |
3336 | fninfo->FileNameLength = cpu_to_le32(conv_len); | |
3337 | memcpy(fninfo->FileName, conv_name, conv_len); | |
3338 | fninfo->NextEntryOffset = cpu_to_le32(next_entry_offset); | |
3339 | break; | |
3340 | } | |
3341 | case FILEID_FULL_DIRECTORY_INFORMATION: | |
3342 | { | |
3343 | struct file_id_full_dir_info *dinfo; | |
3344 | ||
3345 | dinfo = (struct file_id_full_dir_info *)kstat; | |
3346 | dinfo->FileNameLength = cpu_to_le32(conv_len); | |
3347 | dinfo->EaSize = | |
3348 | smb2_get_reparse_tag_special_file(ksmbd_kstat->kstat->mode); | |
3349 | if (dinfo->EaSize) | |
3350 | dinfo->ExtFileAttributes = ATTR_REPARSE_POINT_LE; | |
3351 | dinfo->Reserved = 0; | |
3352 | dinfo->UniqueId = cpu_to_le64(ksmbd_kstat->kstat->ino); | |
3353 | if (d_info->hide_dot_file && d_info->name[0] == '.') | |
3354 | dinfo->ExtFileAttributes |= ATTR_HIDDEN_LE; | |
3355 | memcpy(dinfo->FileName, conv_name, conv_len); | |
3356 | dinfo->NextEntryOffset = cpu_to_le32(next_entry_offset); | |
3357 | break; | |
3358 | } | |
3359 | case FILEID_BOTH_DIRECTORY_INFORMATION: | |
3360 | { | |
3361 | struct file_id_both_directory_info *fibdinfo; | |
3362 | ||
3363 | fibdinfo = (struct file_id_both_directory_info *)kstat; | |
3364 | fibdinfo->FileNameLength = cpu_to_le32(conv_len); | |
3365 | fibdinfo->EaSize = | |
3366 | smb2_get_reparse_tag_special_file(ksmbd_kstat->kstat->mode); | |
3367 | if (fibdinfo->EaSize) | |
3368 | fibdinfo->ExtFileAttributes = ATTR_REPARSE_POINT_LE; | |
3369 | fibdinfo->UniqueId = cpu_to_le64(ksmbd_kstat->kstat->ino); | |
3370 | fibdinfo->ShortNameLength = 0; | |
3371 | fibdinfo->Reserved = 0; | |
3372 | fibdinfo->Reserved2 = cpu_to_le16(0); | |
3373 | if (d_info->hide_dot_file && d_info->name[0] == '.') | |
3374 | fibdinfo->ExtFileAttributes |= ATTR_HIDDEN_LE; | |
3375 | memcpy(fibdinfo->FileName, conv_name, conv_len); | |
3376 | fibdinfo->NextEntryOffset = cpu_to_le32(next_entry_offset); | |
3377 | break; | |
3378 | } | |
3379 | case SMB_FIND_FILE_POSIX_INFO: | |
3380 | { | |
3381 | struct smb2_posix_info *posix_info; | |
3382 | u64 time; | |
3383 | ||
3384 | posix_info = (struct smb2_posix_info *)kstat; | |
3385 | posix_info->Ignored = 0; | |
3386 | posix_info->CreationTime = cpu_to_le64(ksmbd_kstat->create_time); | |
3387 | time = ksmbd_UnixTimeToNT(ksmbd_kstat->kstat->ctime); | |
3388 | posix_info->ChangeTime = cpu_to_le64(time); | |
3389 | time = ksmbd_UnixTimeToNT(ksmbd_kstat->kstat->atime); | |
3390 | posix_info->LastAccessTime = cpu_to_le64(time); | |
3391 | time = ksmbd_UnixTimeToNT(ksmbd_kstat->kstat->mtime); | |
3392 | posix_info->LastWriteTime = cpu_to_le64(time); | |
3393 | posix_info->EndOfFile = cpu_to_le64(ksmbd_kstat->kstat->size); | |
3394 | posix_info->AllocationSize = cpu_to_le64(ksmbd_kstat->kstat->blocks << 9); | |
3395 | posix_info->DeviceId = cpu_to_le32(ksmbd_kstat->kstat->rdev); | |
3396 | posix_info->HardLinks = cpu_to_le32(ksmbd_kstat->kstat->nlink); | |
3397 | posix_info->Mode = cpu_to_le32(ksmbd_kstat->kstat->mode); | |
3398 | posix_info->Inode = cpu_to_le64(ksmbd_kstat->kstat->ino); | |
3399 | posix_info->DosAttributes = | |
3400 | S_ISDIR(ksmbd_kstat->kstat->mode) ? ATTR_DIRECTORY_LE : ATTR_ARCHIVE_LE; | |
3401 | if (d_info->hide_dot_file && d_info->name[0] == '.') | |
3402 | posix_info->DosAttributes |= ATTR_HIDDEN_LE; | |
3403 | id_to_sid(from_kuid(&init_user_ns, ksmbd_kstat->kstat->uid), | |
070fb21e | 3404 | SIDNFS_USER, (struct smb_sid *)&posix_info->SidBuffer[0]); |
e2f34481 | 3405 | id_to_sid(from_kgid(&init_user_ns, ksmbd_kstat->kstat->gid), |
070fb21e | 3406 | SIDNFS_GROUP, (struct smb_sid *)&posix_info->SidBuffer[20]); |
e2f34481 NJ |
3407 | memcpy(posix_info->name, conv_name, conv_len); |
3408 | posix_info->name_len = cpu_to_le32(conv_len); | |
3409 | posix_info->NextEntryOffset = cpu_to_le32(next_entry_offset); | |
3410 | break; | |
3411 | } | |
3412 | ||
3413 | } /* switch (info_level) */ | |
3414 | ||
3415 | d_info->last_entry_offset = d_info->data_count; | |
3416 | d_info->data_count += next_entry_offset; | |
e7735c85 | 3417 | d_info->out_buf_len -= next_entry_offset; |
e2f34481 NJ |
3418 | d_info->wptr += next_entry_offset; |
3419 | kfree(conv_name); | |
3420 | ||
3421 | ksmbd_debug(SMB, | |
070fb21e NJ |
3422 | "info_level : %d, buf_len :%d, next_offset : %d, data_count : %d\n", |
3423 | info_level, d_info->out_buf_len, | |
3424 | next_entry_offset, d_info->data_count); | |
e2f34481 NJ |
3425 | |
3426 | return 0; | |
3427 | } | |
3428 | ||
3429 | struct smb2_query_dir_private { | |
3430 | struct ksmbd_work *work; | |
3431 | char *search_pattern; | |
3432 | struct ksmbd_file *dir_fp; | |
3433 | ||
3434 | struct ksmbd_dir_info *d_info; | |
3435 | int info_level; | |
3436 | }; | |
3437 | ||
3438 | static void lock_dir(struct ksmbd_file *dir_fp) | |
3439 | { | |
3440 | struct dentry *dir = dir_fp->filp->f_path.dentry; | |
3441 | ||
3442 | inode_lock_nested(d_inode(dir), I_MUTEX_PARENT); | |
3443 | } | |
3444 | ||
3445 | static void unlock_dir(struct ksmbd_file *dir_fp) | |
3446 | { | |
3447 | struct dentry *dir = dir_fp->filp->f_path.dentry; | |
3448 | ||
3449 | inode_unlock(d_inode(dir)); | |
3450 | } | |
3451 | ||
3452 | static int process_query_dir_entries(struct smb2_query_dir_private *priv) | |
3453 | { | |
3454 | struct kstat kstat; | |
3455 | struct ksmbd_kstat ksmbd_kstat; | |
3456 | int rc; | |
3457 | int i; | |
3458 | ||
3459 | for (i = 0; i < priv->d_info->num_entry; i++) { | |
3460 | struct dentry *dent; | |
3461 | ||
3462 | if (dentry_name(priv->d_info, priv->info_level)) | |
3463 | return -EINVAL; | |
3464 | ||
3465 | lock_dir(priv->dir_fp); | |
3466 | dent = lookup_one_len(priv->d_info->name, | |
3467 | priv->dir_fp->filp->f_path.dentry, | |
3468 | priv->d_info->name_len); | |
3469 | unlock_dir(priv->dir_fp); | |
3470 | ||
3471 | if (IS_ERR(dent)) { | |
3472 | ksmbd_debug(SMB, "Cannot lookup `%s' [%ld]\n", | |
070fb21e NJ |
3473 | priv->d_info->name, |
3474 | PTR_ERR(dent)); | |
e2f34481 NJ |
3475 | continue; |
3476 | } | |
3477 | if (unlikely(d_is_negative(dent))) { | |
3478 | dput(dent); | |
3479 | ksmbd_debug(SMB, "Negative dentry `%s'\n", | |
3480 | priv->d_info->name); | |
3481 | continue; | |
3482 | } | |
3483 | ||
3484 | ksmbd_kstat.kstat = &kstat; | |
3485 | if (priv->info_level != FILE_NAMES_INFORMATION) | |
3486 | ksmbd_vfs_fill_dentry_attrs(priv->work, | |
3487 | dent, | |
3488 | &ksmbd_kstat); | |
3489 | ||
3490 | rc = smb2_populate_readdir_entry(priv->work->conn, | |
3491 | priv->info_level, | |
3492 | priv->d_info, | |
3493 | &ksmbd_kstat); | |
3494 | dput(dent); | |
3495 | if (rc) | |
3496 | return rc; | |
3497 | } | |
3498 | return 0; | |
3499 | } | |
3500 | ||
3501 | static int reserve_populate_dentry(struct ksmbd_dir_info *d_info, | |
070fb21e | 3502 | int info_level) |
e2f34481 NJ |
3503 | { |
3504 | int struct_sz; | |
3505 | int conv_len; | |
3506 | int next_entry_offset; | |
3507 | ||
3508 | struct_sz = readdir_info_level_struct_sz(info_level); | |
3509 | if (struct_sz == -EOPNOTSUPP) | |
3510 | return -EOPNOTSUPP; | |
3511 | ||
3512 | conv_len = (d_info->name_len + 1) * 2; | |
3513 | next_entry_offset = ALIGN(struct_sz - 1 + conv_len, | |
3514 | KSMBD_DIR_INFO_ALIGNMENT); | |
3515 | ||
3516 | if (next_entry_offset > d_info->out_buf_len) { | |
3517 | d_info->out_buf_len = 0; | |
3518 | return -ENOSPC; | |
3519 | } | |
3520 | ||
3521 | switch (info_level) { | |
3522 | case FILE_FULL_DIRECTORY_INFORMATION: | |
3523 | { | |
3524 | struct file_full_directory_info *ffdinfo; | |
3525 | ||
3526 | ffdinfo = (struct file_full_directory_info *)d_info->wptr; | |
3527 | memcpy(ffdinfo->FileName, d_info->name, d_info->name_len); | |
3528 | ffdinfo->FileName[d_info->name_len] = 0x00; | |
3529 | ffdinfo->FileNameLength = cpu_to_le32(d_info->name_len); | |
3530 | ffdinfo->NextEntryOffset = cpu_to_le32(next_entry_offset); | |
3531 | break; | |
3532 | } | |
3533 | case FILE_BOTH_DIRECTORY_INFORMATION: | |
3534 | { | |
3535 | struct file_both_directory_info *fbdinfo; | |
3536 | ||
3537 | fbdinfo = (struct file_both_directory_info *)d_info->wptr; | |
3538 | memcpy(fbdinfo->FileName, d_info->name, d_info->name_len); | |
3539 | fbdinfo->FileName[d_info->name_len] = 0x00; | |
3540 | fbdinfo->FileNameLength = cpu_to_le32(d_info->name_len); | |
3541 | fbdinfo->NextEntryOffset = cpu_to_le32(next_entry_offset); | |
3542 | break; | |
3543 | } | |
3544 | case FILE_DIRECTORY_INFORMATION: | |
3545 | { | |
3546 | struct file_directory_info *fdinfo; | |
3547 | ||
3548 | fdinfo = (struct file_directory_info *)d_info->wptr; | |
3549 | memcpy(fdinfo->FileName, d_info->name, d_info->name_len); | |
3550 | fdinfo->FileName[d_info->name_len] = 0x00; | |
3551 | fdinfo->FileNameLength = cpu_to_le32(d_info->name_len); | |
3552 | fdinfo->NextEntryOffset = cpu_to_le32(next_entry_offset); | |
3553 | break; | |
3554 | } | |
3555 | case FILE_NAMES_INFORMATION: | |
3556 | { | |
3557 | struct file_names_info *fninfo; | |
3558 | ||
3559 | fninfo = (struct file_names_info *)d_info->wptr; | |
3560 | memcpy(fninfo->FileName, d_info->name, d_info->name_len); | |
3561 | fninfo->FileName[d_info->name_len] = 0x00; | |
3562 | fninfo->FileNameLength = cpu_to_le32(d_info->name_len); | |
3563 | fninfo->NextEntryOffset = cpu_to_le32(next_entry_offset); | |
3564 | break; | |
3565 | } | |
3566 | case FILEID_FULL_DIRECTORY_INFORMATION: | |
3567 | { | |
3568 | struct file_id_full_dir_info *dinfo; | |
3569 | ||
3570 | dinfo = (struct file_id_full_dir_info *)d_info->wptr; | |
3571 | memcpy(dinfo->FileName, d_info->name, d_info->name_len); | |
3572 | dinfo->FileName[d_info->name_len] = 0x00; | |
3573 | dinfo->FileNameLength = cpu_to_le32(d_info->name_len); | |
3574 | dinfo->NextEntryOffset = cpu_to_le32(next_entry_offset); | |
3575 | break; | |
3576 | } | |
3577 | case FILEID_BOTH_DIRECTORY_INFORMATION: | |
3578 | { | |
3579 | struct file_id_both_directory_info *fibdinfo; | |
3580 | ||
3581 | fibdinfo = (struct file_id_both_directory_info *)d_info->wptr; | |
3582 | memcpy(fibdinfo->FileName, d_info->name, d_info->name_len); | |
3583 | fibdinfo->FileName[d_info->name_len] = 0x00; | |
3584 | fibdinfo->FileNameLength = cpu_to_le32(d_info->name_len); | |
3585 | fibdinfo->NextEntryOffset = cpu_to_le32(next_entry_offset); | |
3586 | break; | |
3587 | } | |
3588 | case SMB_FIND_FILE_POSIX_INFO: | |
3589 | { | |
3590 | struct smb2_posix_info *posix_info; | |
3591 | ||
3592 | posix_info = (struct smb2_posix_info *)d_info->wptr; | |
3593 | memcpy(posix_info->name, d_info->name, d_info->name_len); | |
3594 | posix_info->name[d_info->name_len] = 0x00; | |
3595 | posix_info->name_len = cpu_to_le32(d_info->name_len); | |
3596 | posix_info->NextEntryOffset = | |
3597 | cpu_to_le32(next_entry_offset); | |
3598 | break; | |
3599 | } | |
3600 | } /* switch (info_level) */ | |
3601 | ||
3602 | d_info->num_entry++; | |
3603 | d_info->out_buf_len -= next_entry_offset; | |
3604 | d_info->wptr += next_entry_offset; | |
3605 | return 0; | |
3606 | } | |
3607 | ||
64b39f4a | 3608 | static int __query_dir(struct dir_context *ctx, const char *name, int namlen, |
070fb21e | 3609 | loff_t offset, u64 ino, unsigned int d_type) |
e2f34481 NJ |
3610 | { |
3611 | struct ksmbd_readdir_data *buf; | |
3612 | struct smb2_query_dir_private *priv; | |
3613 | struct ksmbd_dir_info *d_info; | |
3614 | int rc; | |
3615 | ||
3616 | buf = container_of(ctx, struct ksmbd_readdir_data, ctx); | |
3617 | priv = buf->private; | |
3618 | d_info = priv->d_info; | |
3619 | ||
3620 | /* dot and dotdot entries are already reserved */ | |
3621 | if (!strcmp(".", name) || !strcmp("..", name)) | |
3622 | return 0; | |
3623 | if (ksmbd_share_veto_filename(priv->work->tcon->share_conf, name)) | |
3624 | return 0; | |
b24c9335 | 3625 | if (!match_pattern(name, namlen, priv->search_pattern)) |
e2f34481 NJ |
3626 | return 0; |
3627 | ||
3628 | d_info->name = name; | |
3629 | d_info->name_len = namlen; | |
3630 | rc = reserve_populate_dentry(d_info, priv->info_level); | |
3631 | if (rc) | |
3632 | return rc; | |
3633 | if (d_info->flags & SMB2_RETURN_SINGLE_ENTRY) { | |
3634 | d_info->out_buf_len = 0; | |
3635 | return 0; | |
3636 | } | |
3637 | return 0; | |
3638 | } | |
3639 | ||
3640 | static void restart_ctx(struct dir_context *ctx) | |
3641 | { | |
3642 | ctx->pos = 0; | |
3643 | } | |
3644 | ||
3645 | static int verify_info_level(int info_level) | |
3646 | { | |
3647 | switch (info_level) { | |
3648 | case FILE_FULL_DIRECTORY_INFORMATION: | |
3649 | case FILE_BOTH_DIRECTORY_INFORMATION: | |
3650 | case FILE_DIRECTORY_INFORMATION: | |
3651 | case FILE_NAMES_INFORMATION: | |
3652 | case FILEID_FULL_DIRECTORY_INFORMATION: | |
3653 | case FILEID_BOTH_DIRECTORY_INFORMATION: | |
3654 | case SMB_FIND_FILE_POSIX_INFO: | |
3655 | break; | |
3656 | default: | |
3657 | return -EOPNOTSUPP; | |
3658 | } | |
3659 | ||
3660 | return 0; | |
3661 | } | |
3662 | ||
3663 | int smb2_query_dir(struct ksmbd_work *work) | |
3664 | { | |
3665 | struct ksmbd_conn *conn = work->conn; | |
3666 | struct smb2_query_directory_req *req; | |
3667 | struct smb2_query_directory_rsp *rsp, *rsp_org; | |
3668 | struct ksmbd_share_config *share = work->tcon->share_conf; | |
3669 | struct ksmbd_file *dir_fp = NULL; | |
3670 | struct ksmbd_dir_info d_info; | |
3671 | int rc = 0; | |
3672 | char *srch_ptr = NULL; | |
3673 | unsigned char srch_flag; | |
3674 | int buffer_sz; | |
3675 | struct smb2_query_dir_private query_dir_private = {NULL, }; | |
3676 | ||
e5066499 | 3677 | rsp_org = work->response_buf; |
e2f34481 NJ |
3678 | WORK_BUFFERS(work, req, rsp); |
3679 | ||
3680 | if (ksmbd_override_fsids(work)) { | |
3681 | rsp->hdr.Status = STATUS_NO_MEMORY; | |
3682 | smb2_set_err_rsp(work); | |
3683 | return -ENOMEM; | |
3684 | } | |
3685 | ||
3686 | rc = verify_info_level(req->FileInformationClass); | |
3687 | if (rc) { | |
3688 | rc = -EFAULT; | |
3689 | goto err_out2; | |
3690 | } | |
3691 | ||
3692 | dir_fp = ksmbd_lookup_fd_slow(work, | |
070fb21e NJ |
3693 | le64_to_cpu(req->VolatileFileId), |
3694 | le64_to_cpu(req->PersistentFileId)); | |
e2f34481 NJ |
3695 | if (!dir_fp) { |
3696 | rc = -EBADF; | |
3697 | goto err_out2; | |
3698 | } | |
3699 | ||
3700 | if (!(dir_fp->daccess & FILE_LIST_DIRECTORY_LE) || | |
070fb21e NJ |
3701 | inode_permission(&init_user_ns, file_inode(dir_fp->filp), |
3702 | MAY_READ | MAY_EXEC)) { | |
bde1694a NJ |
3703 | pr_err("no right to enumerate directory (%s)\n", |
3704 | FP_FILENAME(dir_fp)); | |
e2f34481 NJ |
3705 | rc = -EACCES; |
3706 | goto err_out2; | |
3707 | } | |
3708 | ||
3709 | if (!S_ISDIR(file_inode(dir_fp->filp)->i_mode)) { | |
bde1694a | 3710 | pr_err("can't do query dir for a file\n"); |
e2f34481 NJ |
3711 | rc = -EINVAL; |
3712 | goto err_out2; | |
3713 | } | |
3714 | ||
3715 | srch_flag = req->Flags; | |
3716 | srch_ptr = smb_strndup_from_utf16(req->Buffer, | |
070fb21e NJ |
3717 | le16_to_cpu(req->FileNameLength), 1, |
3718 | conn->local_nls); | |
e2f34481 NJ |
3719 | if (IS_ERR(srch_ptr)) { |
3720 | ksmbd_debug(SMB, "Search Pattern not found\n"); | |
3721 | rc = -EINVAL; | |
3722 | goto err_out2; | |
64b39f4a | 3723 | } else { |
e2f34481 | 3724 | ksmbd_debug(SMB, "Search pattern is %s\n", srch_ptr); |
64b39f4a | 3725 | } |
e2f34481 NJ |
3726 | |
3727 | ksmbd_debug(SMB, "Directory name is %s\n", dir_fp->filename); | |
3728 | ||
3729 | if (srch_flag & SMB2_REOPEN || srch_flag & SMB2_RESTART_SCANS) { | |
3730 | ksmbd_debug(SMB, "Restart directory scan\n"); | |
3731 | generic_file_llseek(dir_fp->filp, 0, SEEK_SET); | |
3732 | restart_ctx(&dir_fp->readdir_data.ctx); | |
3733 | } | |
3734 | ||
3735 | memset(&d_info, 0, sizeof(struct ksmbd_dir_info)); | |
3736 | d_info.wptr = (char *)rsp->Buffer; | |
3737 | d_info.rptr = (char *)rsp->Buffer; | |
64b39f4a | 3738 | d_info.out_buf_len = (work->response_sz - (get_rfc1002_len(rsp_org) + 4)); |
070fb21e NJ |
3739 | d_info.out_buf_len = min_t(int, d_info.out_buf_len, le32_to_cpu(req->OutputBufferLength)) - |
3740 | sizeof(struct smb2_query_directory_rsp); | |
e2f34481 NJ |
3741 | d_info.flags = srch_flag; |
3742 | ||
3743 | /* | |
3744 | * reserve dot and dotdot entries in head of buffer | |
3745 | * in first response | |
3746 | */ | |
3747 | rc = ksmbd_populate_dot_dotdot_entries(work, req->FileInformationClass, | |
070fb21e NJ |
3748 | dir_fp, &d_info, srch_ptr, |
3749 | smb2_populate_readdir_entry); | |
e2f34481 NJ |
3750 | if (rc == -ENOSPC) |
3751 | rc = 0; | |
3752 | else if (rc) | |
3753 | goto err_out; | |
3754 | ||
3755 | if (test_share_config_flag(share, KSMBD_SHARE_FLAG_HIDE_DOT_FILES)) | |
3756 | d_info.hide_dot_file = true; | |
3757 | ||
3758 | buffer_sz = d_info.out_buf_len; | |
3759 | d_info.rptr = d_info.wptr; | |
3760 | query_dir_private.work = work; | |
3761 | query_dir_private.search_pattern = srch_ptr; | |
3762 | query_dir_private.dir_fp = dir_fp; | |
3763 | query_dir_private.d_info = &d_info; | |
3764 | query_dir_private.info_level = req->FileInformationClass; | |
3765 | dir_fp->readdir_data.private = &query_dir_private; | |
3766 | set_ctx_actor(&dir_fp->readdir_data.ctx, __query_dir); | |
3767 | ||
e8c06191 | 3768 | rc = iterate_dir(dir_fp->filp, &dir_fp->readdir_data.ctx); |
e2f34481 NJ |
3769 | if (rc == 0) |
3770 | restart_ctx(&dir_fp->readdir_data.ctx); | |
3771 | if (rc == -ENOSPC) | |
3772 | rc = 0; | |
3773 | if (rc) | |
3774 | goto err_out; | |
3775 | ||
3776 | d_info.wptr = d_info.rptr; | |
3777 | d_info.out_buf_len = buffer_sz; | |
3778 | rc = process_query_dir_entries(&query_dir_private); | |
3779 | if (rc) | |
3780 | goto err_out; | |
3781 | ||
3782 | if (!d_info.data_count && d_info.out_buf_len >= 0) { | |
64b39f4a | 3783 | if (srch_flag & SMB2_RETURN_SINGLE_ENTRY && !is_asterisk(srch_ptr)) { |
e2f34481 | 3784 | rsp->hdr.Status = STATUS_NO_SUCH_FILE; |
64b39f4a | 3785 | } else { |
e2f34481 NJ |
3786 | dir_fp->dot_dotdot[0] = dir_fp->dot_dotdot[1] = 0; |
3787 | rsp->hdr.Status = STATUS_NO_MORE_FILES; | |
3788 | } | |
3789 | rsp->StructureSize = cpu_to_le16(9); | |
3790 | rsp->OutputBufferOffset = cpu_to_le16(0); | |
3791 | rsp->OutputBufferLength = cpu_to_le32(0); | |
3792 | rsp->Buffer[0] = 0; | |
3793 | inc_rfc1001_len(rsp_org, 9); | |
3794 | } else { | |
3795 | ((struct file_directory_info *) | |
3796 | ((char *)rsp->Buffer + d_info.last_entry_offset)) | |
3797 | ->NextEntryOffset = 0; | |
3798 | ||
3799 | rsp->StructureSize = cpu_to_le16(9); | |
3800 | rsp->OutputBufferOffset = cpu_to_le16(72); | |
3801 | rsp->OutputBufferLength = cpu_to_le32(d_info.data_count); | |
3802 | inc_rfc1001_len(rsp_org, 8 + d_info.data_count); | |
3803 | } | |
3804 | ||
3805 | kfree(srch_ptr); | |
3806 | ksmbd_fd_put(work, dir_fp); | |
3807 | ksmbd_revert_fsids(work); | |
3808 | return 0; | |
3809 | ||
3810 | err_out: | |
bde1694a | 3811 | pr_err("error while processing smb2 query dir rc = %d\n", rc); |
e2f34481 NJ |
3812 | kfree(srch_ptr); |
3813 | ||
3814 | err_out2: | |
3815 | if (rc == -EINVAL) | |
3816 | rsp->hdr.Status = STATUS_INVALID_PARAMETER; | |
3817 | else if (rc == -EACCES) | |
3818 | rsp->hdr.Status = STATUS_ACCESS_DENIED; | |
3819 | else if (rc == -ENOENT) | |
3820 | rsp->hdr.Status = STATUS_NO_SUCH_FILE; | |
3821 | else if (rc == -EBADF) | |
3822 | rsp->hdr.Status = STATUS_FILE_CLOSED; | |
3823 | else if (rc == -ENOMEM) | |
3824 | rsp->hdr.Status = STATUS_NO_MEMORY; | |
3825 | else if (rc == -EFAULT) | |
3826 | rsp->hdr.Status = STATUS_INVALID_INFO_CLASS; | |
3827 | if (!rsp->hdr.Status) | |
3828 | rsp->hdr.Status = STATUS_UNEXPECTED_IO_ERROR; | |
3829 | ||
3830 | smb2_set_err_rsp(work); | |
3831 | ksmbd_fd_put(work, dir_fp); | |
3832 | ksmbd_revert_fsids(work); | |
3833 | return 0; | |
3834 | } | |
3835 | ||
3836 | /** | |
3837 | * buffer_check_err() - helper function to check buffer errors | |
3838 | * @reqOutputBufferLength: max buffer length expected in command response | |
3839 | * @rsp: query info response buffer contains output buffer length | |
3840 | * @infoclass_size: query info class response buffer size | |
3841 | * | |
3842 | * Return: 0 on success, otherwise error | |
3843 | */ | |
3844 | static int buffer_check_err(int reqOutputBufferLength, | |
070fb21e | 3845 | struct smb2_query_info_rsp *rsp, int infoclass_size) |
e2f34481 NJ |
3846 | { |
3847 | if (reqOutputBufferLength < le32_to_cpu(rsp->OutputBufferLength)) { | |
3848 | if (reqOutputBufferLength < infoclass_size) { | |
bde1694a | 3849 | pr_err("Invalid Buffer Size Requested\n"); |
e2f34481 | 3850 | rsp->hdr.Status = STATUS_INFO_LENGTH_MISMATCH; |
64b39f4a | 3851 | rsp->hdr.smb2_buf_length = cpu_to_be32(sizeof(struct smb2_hdr) - 4); |
e2f34481 NJ |
3852 | return -EINVAL; |
3853 | } | |
3854 | ||
3855 | ksmbd_debug(SMB, "Buffer Overflow\n"); | |
3856 | rsp->hdr.Status = STATUS_BUFFER_OVERFLOW; | |
64b39f4a NJ |
3857 | rsp->hdr.smb2_buf_length = cpu_to_be32(sizeof(struct smb2_hdr) - 4 + |
3858 | reqOutputBufferLength); | |
3859 | rsp->OutputBufferLength = cpu_to_le32(reqOutputBufferLength); | |
e2f34481 NJ |
3860 | } |
3861 | return 0; | |
3862 | } | |
3863 | ||
3864 | static void get_standard_info_pipe(struct smb2_query_info_rsp *rsp) | |
3865 | { | |
3866 | struct smb2_file_standard_info *sinfo; | |
3867 | ||
3868 | sinfo = (struct smb2_file_standard_info *)rsp->Buffer; | |
3869 | ||
3870 | sinfo->AllocationSize = cpu_to_le64(4096); | |
3871 | sinfo->EndOfFile = cpu_to_le64(0); | |
3872 | sinfo->NumberOfLinks = cpu_to_le32(1); | |
3873 | sinfo->DeletePending = 1; | |
3874 | sinfo->Directory = 0; | |
3875 | rsp->OutputBufferLength = | |
3876 | cpu_to_le32(sizeof(struct smb2_file_standard_info)); | |
3877 | inc_rfc1001_len(rsp, sizeof(struct smb2_file_standard_info)); | |
3878 | } | |
3879 | ||
070fb21e | 3880 | static void get_internal_info_pipe(struct smb2_query_info_rsp *rsp, u64 num) |
e2f34481 NJ |
3881 | { |
3882 | struct smb2_file_internal_info *file_info; | |
3883 | ||
3884 | file_info = (struct smb2_file_internal_info *)rsp->Buffer; | |
3885 | ||
3886 | /* any unique number */ | |
3887 | file_info->IndexNumber = cpu_to_le64(num | (1ULL << 63)); | |
3888 | rsp->OutputBufferLength = | |
3889 | cpu_to_le32(sizeof(struct smb2_file_internal_info)); | |
3890 | inc_rfc1001_len(rsp, sizeof(struct smb2_file_internal_info)); | |
3891 | } | |
3892 | ||
e2f34481 | 3893 | static int smb2_get_info_file_pipe(struct ksmbd_session *sess, |
070fb21e NJ |
3894 | struct smb2_query_info_req *req, |
3895 | struct smb2_query_info_rsp *rsp) | |
e2f34481 | 3896 | { |
64b39f4a | 3897 | u64 id; |
e2f34481 NJ |
3898 | int rc; |
3899 | ||
3900 | /* | |
3901 | * Windows can sometime send query file info request on | |
3902 | * pipe without opening it, checking error condition here | |
3903 | */ | |
3904 | id = le64_to_cpu(req->VolatileFileId); | |
3905 | if (!ksmbd_session_rpc_method(sess, id)) | |
3906 | return -ENOENT; | |
3907 | ||
3908 | ksmbd_debug(SMB, "FileInfoClass %u, FileId 0x%llx\n", | |
070fb21e | 3909 | req->FileInfoClass, le64_to_cpu(req->VolatileFileId)); |
e2f34481 NJ |
3910 | |
3911 | switch (req->FileInfoClass) { | |
3912 | case FILE_STANDARD_INFORMATION: | |
3913 | get_standard_info_pipe(rsp); | |
3914 | rc = buffer_check_err(le32_to_cpu(req->OutputBufferLength), | |
070fb21e | 3915 | rsp, FILE_STANDARD_INFORMATION_SIZE); |
e2f34481 NJ |
3916 | break; |
3917 | case FILE_INTERNAL_INFORMATION: | |
3918 | get_internal_info_pipe(rsp, id); | |
3919 | rc = buffer_check_err(le32_to_cpu(req->OutputBufferLength), | |
070fb21e | 3920 | rsp, FILE_INTERNAL_INFORMATION_SIZE); |
e2f34481 NJ |
3921 | break; |
3922 | default: | |
3923 | ksmbd_debug(SMB, "smb2_info_file_pipe for %u not supported\n", | |
070fb21e | 3924 | req->FileInfoClass); |
e2f34481 NJ |
3925 | rc = -EOPNOTSUPP; |
3926 | } | |
3927 | return rc; | |
3928 | } | |
3929 | ||
3930 | /** | |
3931 | * smb2_get_ea() - handler for smb2 get extended attribute command | |
3932 | * @work: smb work containing query info command buffer | |
95fa1ce9 HL |
3933 | * @fp: ksmbd_file pointer |
3934 | * @req: get extended attribute request | |
3935 | * @rsp: response buffer pointer | |
3936 | * @rsp_org: base response buffer pointer in case of chained response | |
e2f34481 NJ |
3937 | * |
3938 | * Return: 0 on success, otherwise error | |
3939 | */ | |
64b39f4a | 3940 | static int smb2_get_ea(struct ksmbd_work *work, struct ksmbd_file *fp, |
070fb21e NJ |
3941 | struct smb2_query_info_req *req, |
3942 | struct smb2_query_info_rsp *rsp, void *rsp_org) | |
e2f34481 NJ |
3943 | { |
3944 | struct smb2_ea_info *eainfo, *prev_eainfo; | |
3945 | char *name, *ptr, *xattr_list = NULL, *buf; | |
3946 | int rc, name_len, value_len, xattr_list_len, idx; | |
3947 | ssize_t buf_free_len, alignment_bytes, next_offset, rsp_data_cnt = 0; | |
3948 | struct smb2_ea_info_req *ea_req = NULL; | |
3949 | struct path *path; | |
3950 | ||
3951 | if (!(fp->daccess & FILE_READ_EA_LE)) { | |
bde1694a NJ |
3952 | pr_err("Not permitted to read ext attr : 0x%x\n", |
3953 | fp->daccess); | |
e2f34481 NJ |
3954 | return -EACCES; |
3955 | } | |
3956 | ||
3957 | path = &fp->filp->f_path; | |
3958 | /* single EA entry is requested with given user.* name */ | |
64b39f4a | 3959 | if (req->InputBufferLength) { |
e2f34481 | 3960 | ea_req = (struct smb2_ea_info_req *)req->Buffer; |
64b39f4a | 3961 | } else { |
e2f34481 NJ |
3962 | /* need to send all EAs, if no specific EA is requested*/ |
3963 | if (le32_to_cpu(req->Flags) & SL_RETURN_SINGLE_ENTRY) | |
3964 | ksmbd_debug(SMB, | |
070fb21e NJ |
3965 | "All EAs are requested but need to send single EA entry in rsp flags 0x%x\n", |
3966 | le32_to_cpu(req->Flags)); | |
e2f34481 NJ |
3967 | } |
3968 | ||
3969 | buf_free_len = work->response_sz - | |
3970 | (get_rfc1002_len(rsp_org) + 4) - | |
3971 | sizeof(struct smb2_query_info_rsp); | |
3972 | ||
3973 | if (le32_to_cpu(req->OutputBufferLength) < buf_free_len) | |
3974 | buf_free_len = le32_to_cpu(req->OutputBufferLength); | |
3975 | ||
3976 | rc = ksmbd_vfs_listxattr(path->dentry, &xattr_list); | |
3977 | if (rc < 0) { | |
3978 | rsp->hdr.Status = STATUS_INVALID_HANDLE; | |
3979 | goto out; | |
3980 | } else if (!rc) { /* there is no EA in the file */ | |
3981 | ksmbd_debug(SMB, "no ea data in the file\n"); | |
3982 | goto done; | |
3983 | } | |
3984 | xattr_list_len = rc; | |
3985 | ||
3986 | ptr = (char *)rsp->Buffer; | |
3987 | eainfo = (struct smb2_ea_info *)ptr; | |
3988 | prev_eainfo = eainfo; | |
3989 | idx = 0; | |
3990 | ||
3991 | while (idx < xattr_list_len) { | |
3992 | name = xattr_list + idx; | |
3993 | name_len = strlen(name); | |
3994 | ||
3995 | ksmbd_debug(SMB, "%s, len %d\n", name, name_len); | |
3996 | idx += name_len + 1; | |
3997 | ||
3998 | /* | |
3999 | * CIFS does not support EA other than user.* namespace, | |
4000 | * still keep the framework generic, to list other attrs | |
4001 | * in future. | |
4002 | */ | |
4003 | if (strncmp(name, XATTR_USER_PREFIX, XATTR_USER_PREFIX_LEN)) | |
4004 | continue; | |
4005 | ||
4006 | if (!strncmp(&name[XATTR_USER_PREFIX_LEN], STREAM_PREFIX, | |
64b39f4a | 4007 | STREAM_PREFIX_LEN)) |
e2f34481 NJ |
4008 | continue; |
4009 | ||
4010 | if (req->InputBufferLength && | |
64b39f4a NJ |
4011 | strncmp(&name[XATTR_USER_PREFIX_LEN], ea_req->name, |
4012 | ea_req->EaNameLength)) | |
e2f34481 NJ |
4013 | continue; |
4014 | ||
4015 | if (!strncmp(&name[XATTR_USER_PREFIX_LEN], | |
64b39f4a | 4016 | DOS_ATTRIBUTE_PREFIX, DOS_ATTRIBUTE_PREFIX_LEN)) |
e2f34481 NJ |
4017 | continue; |
4018 | ||
4019 | if (!strncmp(name, XATTR_USER_PREFIX, XATTR_USER_PREFIX_LEN)) | |
4020 | name_len -= XATTR_USER_PREFIX_LEN; | |
4021 | ||
4022 | ptr = (char *)(&eainfo->name + name_len + 1); | |
4023 | buf_free_len -= (offsetof(struct smb2_ea_info, name) + | |
4024 | name_len + 1); | |
4025 | /* bailout if xattr can't fit in buf_free_len */ | |
4026 | value_len = ksmbd_vfs_getxattr(path->dentry, name, &buf); | |
4027 | if (value_len <= 0) { | |
4028 | rc = -ENOENT; | |
4029 | rsp->hdr.Status = STATUS_INVALID_HANDLE; | |
4030 | goto out; | |
4031 | } | |
4032 | ||
4033 | buf_free_len -= value_len; | |
4034 | if (buf_free_len < 0) { | |
79f6b11a | 4035 | kfree(buf); |
e2f34481 NJ |
4036 | break; |
4037 | } | |
4038 | ||
4039 | memcpy(ptr, buf, value_len); | |
79f6b11a | 4040 | kfree(buf); |
e2f34481 NJ |
4041 | |
4042 | ptr += value_len; | |
4043 | eainfo->Flags = 0; | |
4044 | eainfo->EaNameLength = name_len; | |
4045 | ||
64b39f4a | 4046 | if (!strncmp(name, XATTR_USER_PREFIX, XATTR_USER_PREFIX_LEN)) |
e2f34481 | 4047 | memcpy(eainfo->name, &name[XATTR_USER_PREFIX_LEN], |
070fb21e | 4048 | name_len); |
e2f34481 NJ |
4049 | else |
4050 | memcpy(eainfo->name, name, name_len); | |
4051 | ||
4052 | eainfo->name[name_len] = '\0'; | |
4053 | eainfo->EaValueLength = cpu_to_le16(value_len); | |
4054 | next_offset = offsetof(struct smb2_ea_info, name) + | |
4055 | name_len + 1 + value_len; | |
4056 | ||
4057 | /* align next xattr entry at 4 byte bundary */ | |
4058 | alignment_bytes = ((next_offset + 3) & ~3) - next_offset; | |
4059 | if (alignment_bytes) { | |
4060 | memset(ptr, '\0', alignment_bytes); | |
4061 | ptr += alignment_bytes; | |
4062 | next_offset += alignment_bytes; | |
4063 | buf_free_len -= alignment_bytes; | |
4064 | } | |
4065 | eainfo->NextEntryOffset = cpu_to_le32(next_offset); | |
4066 | prev_eainfo = eainfo; | |
4067 | eainfo = (struct smb2_ea_info *)ptr; | |
4068 | rsp_data_cnt += next_offset; | |
4069 | ||
4070 | if (req->InputBufferLength) { | |
4071 | ksmbd_debug(SMB, "single entry requested\n"); | |
4072 | break; | |
4073 | } | |
4074 | } | |
4075 | ||
4076 | /* no more ea entries */ | |
4077 | prev_eainfo->NextEntryOffset = 0; | |
4078 | done: | |
4079 | rc = 0; | |
4080 | if (rsp_data_cnt == 0) | |
4081 | rsp->hdr.Status = STATUS_NO_EAS_ON_FILE; | |
4082 | rsp->OutputBufferLength = cpu_to_le32(rsp_data_cnt); | |
4083 | inc_rfc1001_len(rsp_org, rsp_data_cnt); | |
4084 | out: | |
79f6b11a | 4085 | kvfree(xattr_list); |
e2f34481 NJ |
4086 | return rc; |
4087 | } | |
4088 | ||
4089 | static void get_file_access_info(struct smb2_query_info_rsp *rsp, | |
070fb21e | 4090 | struct ksmbd_file *fp, void *rsp_org) |
e2f34481 NJ |
4091 | { |
4092 | struct smb2_file_access_info *file_info; | |
4093 | ||
4094 | file_info = (struct smb2_file_access_info *)rsp->Buffer; | |
4095 | file_info->AccessFlags = fp->daccess; | |
4096 | rsp->OutputBufferLength = | |
4097 | cpu_to_le32(sizeof(struct smb2_file_access_info)); | |
4098 | inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_access_info)); | |
4099 | } | |
4100 | ||
4101 | static int get_file_basic_info(struct smb2_query_info_rsp *rsp, | |
070fb21e | 4102 | struct ksmbd_file *fp, void *rsp_org) |
e2f34481 NJ |
4103 | { |
4104 | struct smb2_file_all_info *basic_info; | |
4105 | struct kstat stat; | |
4106 | u64 time; | |
4107 | ||
4108 | if (!(fp->daccess & FILE_READ_ATTRIBUTES_LE)) { | |
bde1694a NJ |
4109 | pr_err("no right to read the attributes : 0x%x\n", |
4110 | fp->daccess); | |
e2f34481 NJ |
4111 | return -EACCES; |
4112 | } | |
4113 | ||
4114 | basic_info = (struct smb2_file_all_info *)rsp->Buffer; | |
4115 | generic_fillattr(&init_user_ns, FP_INODE(fp), &stat); | |
4116 | basic_info->CreationTime = cpu_to_le64(fp->create_time); | |
4117 | time = ksmbd_UnixTimeToNT(stat.atime); | |
4118 | basic_info->LastAccessTime = cpu_to_le64(time); | |
4119 | time = ksmbd_UnixTimeToNT(stat.mtime); | |
4120 | basic_info->LastWriteTime = cpu_to_le64(time); | |
4121 | time = ksmbd_UnixTimeToNT(stat.ctime); | |
4122 | basic_info->ChangeTime = cpu_to_le64(time); | |
4123 | basic_info->Attributes = fp->f_ci->m_fattr; | |
4124 | basic_info->Pad1 = 0; | |
4125 | rsp->OutputBufferLength = | |
64b39f4a | 4126 | cpu_to_le32(offsetof(struct smb2_file_all_info, AllocationSize)); |
e2f34481 NJ |
4127 | inc_rfc1001_len(rsp_org, offsetof(struct smb2_file_all_info, |
4128 | AllocationSize)); | |
4129 | return 0; | |
4130 | } | |
4131 | ||
4132 | static unsigned long long get_allocation_size(struct inode *inode, | |
070fb21e | 4133 | struct kstat *stat) |
e2f34481 NJ |
4134 | { |
4135 | unsigned long long alloc_size = 0; | |
4136 | ||
4137 | if (!S_ISDIR(stat->mode)) { | |
4138 | if ((inode->i_blocks << 9) <= stat->size) | |
4139 | alloc_size = stat->size; | |
4140 | else | |
4141 | alloc_size = inode->i_blocks << 9; | |
e2f34481 NJ |
4142 | } |
4143 | ||
4144 | return alloc_size; | |
4145 | } | |
4146 | ||
4147 | static void get_file_standard_info(struct smb2_query_info_rsp *rsp, | |
070fb21e | 4148 | struct ksmbd_file *fp, void *rsp_org) |
e2f34481 NJ |
4149 | { |
4150 | struct smb2_file_standard_info *sinfo; | |
4151 | unsigned int delete_pending; | |
4152 | struct inode *inode; | |
4153 | struct kstat stat; | |
4154 | ||
4155 | inode = FP_INODE(fp); | |
4156 | generic_fillattr(&init_user_ns, inode, &stat); | |
4157 | ||
4158 | sinfo = (struct smb2_file_standard_info *)rsp->Buffer; | |
4159 | delete_pending = ksmbd_inode_pending_delete(fp); | |
4160 | ||
4161 | sinfo->AllocationSize = cpu_to_le64(get_allocation_size(inode, &stat)); | |
4162 | sinfo->EndOfFile = S_ISDIR(stat.mode) ? 0 : cpu_to_le64(stat.size); | |
4163 | sinfo->NumberOfLinks = cpu_to_le32(get_nlink(&stat) - delete_pending); | |
4164 | sinfo->DeletePending = delete_pending; | |
4165 | sinfo->Directory = S_ISDIR(stat.mode) ? 1 : 0; | |
4166 | rsp->OutputBufferLength = | |
4167 | cpu_to_le32(sizeof(struct smb2_file_standard_info)); | |
4168 | inc_rfc1001_len(rsp_org, | |
4169 | sizeof(struct smb2_file_standard_info)); | |
4170 | } | |
4171 | ||
4172 | static void get_file_alignment_info(struct smb2_query_info_rsp *rsp, | |
070fb21e | 4173 | void *rsp_org) |
e2f34481 NJ |
4174 | { |
4175 | struct smb2_file_alignment_info *file_info; | |
4176 | ||
4177 | file_info = (struct smb2_file_alignment_info *)rsp->Buffer; | |
4178 | file_info->AlignmentRequirement = 0; | |
4179 | rsp->OutputBufferLength = | |
4180 | cpu_to_le32(sizeof(struct smb2_file_alignment_info)); | |
4181 | inc_rfc1001_len(rsp_org, | |
4182 | sizeof(struct smb2_file_alignment_info)); | |
4183 | } | |
4184 | ||
4185 | static int get_file_all_info(struct ksmbd_work *work, | |
070fb21e NJ |
4186 | struct smb2_query_info_rsp *rsp, |
4187 | struct ksmbd_file *fp, | |
4188 | void *rsp_org) | |
e2f34481 NJ |
4189 | { |
4190 | struct ksmbd_conn *conn = work->conn; | |
4191 | struct smb2_file_all_info *file_info; | |
4192 | unsigned int delete_pending; | |
4193 | struct inode *inode; | |
4194 | struct kstat stat; | |
4195 | int conv_len; | |
4196 | char *filename; | |
4197 | u64 time; | |
4198 | ||
4199 | if (!(fp->daccess & FILE_READ_ATTRIBUTES_LE)) { | |
4200 | ksmbd_debug(SMB, "no right to read the attributes : 0x%x\n", | |
070fb21e | 4201 | fp->daccess); |
e2f34481 NJ |
4202 | return -EACCES; |
4203 | } | |
4204 | ||
4205 | filename = convert_to_nt_pathname(fp->filename, | |
4206 | work->tcon->share_conf->path); | |
4207 | if (!filename) | |
4208 | return -ENOMEM; | |
4209 | ||
4210 | inode = FP_INODE(fp); | |
4211 | generic_fillattr(&init_user_ns, inode, &stat); | |
4212 | ||
4213 | ksmbd_debug(SMB, "filename = %s\n", filename); | |
4214 | delete_pending = ksmbd_inode_pending_delete(fp); | |
4215 | file_info = (struct smb2_file_all_info *)rsp->Buffer; | |
4216 | ||
4217 | file_info->CreationTime = cpu_to_le64(fp->create_time); | |
4218 | time = ksmbd_UnixTimeToNT(stat.atime); | |
4219 | file_info->LastAccessTime = cpu_to_le64(time); | |
4220 | time = ksmbd_UnixTimeToNT(stat.mtime); | |
4221 | file_info->LastWriteTime = cpu_to_le64(time); | |
4222 | time = ksmbd_UnixTimeToNT(stat.ctime); | |
4223 | file_info->ChangeTime = cpu_to_le64(time); | |
4224 | file_info->Attributes = fp->f_ci->m_fattr; | |
4225 | file_info->Pad1 = 0; | |
4226 | file_info->AllocationSize = | |
4227 | cpu_to_le64(get_allocation_size(inode, &stat)); | |
4228 | file_info->EndOfFile = S_ISDIR(stat.mode) ? 0 : cpu_to_le64(stat.size); | |
4229 | file_info->NumberOfLinks = | |
4230 | cpu_to_le32(get_nlink(&stat) - delete_pending); | |
4231 | file_info->DeletePending = delete_pending; | |
4232 | file_info->Directory = S_ISDIR(stat.mode) ? 1 : 0; | |
4233 | file_info->Pad2 = 0; | |
4234 | file_info->IndexNumber = cpu_to_le64(stat.ino); | |
4235 | file_info->EASize = 0; | |
4236 | file_info->AccessFlags = fp->daccess; | |
4237 | file_info->CurrentByteOffset = cpu_to_le64(fp->filp->f_pos); | |
4238 | file_info->Mode = fp->coption; | |
4239 | file_info->AlignmentRequirement = 0; | |
070fb21e NJ |
4240 | conv_len = smbConvertToUTF16((__le16 *)file_info->FileName, filename, |
4241 | PATH_MAX, conn->local_nls, 0); | |
e2f34481 NJ |
4242 | conv_len *= 2; |
4243 | file_info->FileNameLength = cpu_to_le32(conv_len); | |
4244 | rsp->OutputBufferLength = | |
4245 | cpu_to_le32(sizeof(struct smb2_file_all_info) + conv_len - 1); | |
4246 | kfree(filename); | |
4247 | inc_rfc1001_len(rsp_org, le32_to_cpu(rsp->OutputBufferLength)); | |
4248 | return 0; | |
4249 | } | |
4250 | ||
4251 | static void get_file_alternate_info(struct ksmbd_work *work, | |
070fb21e NJ |
4252 | struct smb2_query_info_rsp *rsp, |
4253 | struct ksmbd_file *fp, | |
4254 | void *rsp_org) | |
e2f34481 NJ |
4255 | { |
4256 | struct ksmbd_conn *conn = work->conn; | |
4257 | struct smb2_file_alt_name_info *file_info; | |
4258 | int conv_len; | |
4259 | char *filename; | |
4260 | ||
4261 | filename = (char *)FP_FILENAME(fp); | |
4262 | file_info = (struct smb2_file_alt_name_info *)rsp->Buffer; | |
4263 | conv_len = ksmbd_extract_shortname(conn, | |
4264 | filename, | |
4265 | file_info->FileName); | |
4266 | file_info->FileNameLength = cpu_to_le32(conv_len); | |
4267 | rsp->OutputBufferLength = | |
4268 | cpu_to_le32(sizeof(struct smb2_file_alt_name_info) + conv_len); | |
4269 | inc_rfc1001_len(rsp_org, le32_to_cpu(rsp->OutputBufferLength)); | |
4270 | } | |
4271 | ||
4272 | static void get_file_stream_info(struct ksmbd_work *work, | |
070fb21e NJ |
4273 | struct smb2_query_info_rsp *rsp, |
4274 | struct ksmbd_file *fp, | |
4275 | void *rsp_org) | |
e2f34481 NJ |
4276 | { |
4277 | struct ksmbd_conn *conn = work->conn; | |
4278 | struct smb2_file_stream_info *file_info; | |
4279 | char *stream_name, *xattr_list = NULL, *stream_buf; | |
4280 | struct kstat stat; | |
4281 | struct path *path = &fp->filp->f_path; | |
4282 | ssize_t xattr_list_len; | |
4283 | int nbytes = 0, streamlen, stream_name_len, next, idx = 0; | |
4284 | ||
4285 | generic_fillattr(&init_user_ns, FP_INODE(fp), &stat); | |
4286 | file_info = (struct smb2_file_stream_info *)rsp->Buffer; | |
4287 | ||
4288 | xattr_list_len = ksmbd_vfs_listxattr(path->dentry, &xattr_list); | |
4289 | if (xattr_list_len < 0) { | |
4290 | goto out; | |
4291 | } else if (!xattr_list_len) { | |
4292 | ksmbd_debug(SMB, "empty xattr in the file\n"); | |
4293 | goto out; | |
4294 | } | |
4295 | ||
4296 | while (idx < xattr_list_len) { | |
4297 | stream_name = xattr_list + idx; | |
4298 | streamlen = strlen(stream_name); | |
4299 | idx += streamlen + 1; | |
4300 | ||
4301 | ksmbd_debug(SMB, "%s, len %d\n", stream_name, streamlen); | |
4302 | ||
4303 | if (strncmp(&stream_name[XATTR_USER_PREFIX_LEN], | |
64b39f4a | 4304 | STREAM_PREFIX, STREAM_PREFIX_LEN)) |
e2f34481 NJ |
4305 | continue; |
4306 | ||
4307 | stream_name_len = streamlen - (XATTR_USER_PREFIX_LEN + | |
4308 | STREAM_PREFIX_LEN); | |
4309 | streamlen = stream_name_len; | |
4310 | ||
4311 | /* plus : size */ | |
4312 | streamlen += 1; | |
4313 | stream_buf = kmalloc(streamlen + 1, GFP_KERNEL); | |
4314 | if (!stream_buf) | |
4315 | break; | |
4316 | ||
4317 | streamlen = snprintf(stream_buf, streamlen + 1, | |
070fb21e | 4318 | ":%s", &stream_name[XATTR_NAME_STREAM_LEN]); |
e2f34481 | 4319 | |
070fb21e | 4320 | file_info = (struct smb2_file_stream_info *)&rsp->Buffer[nbytes]; |
e2f34481 | 4321 | streamlen = smbConvertToUTF16((__le16 *)file_info->StreamName, |
070fb21e NJ |
4322 | stream_buf, streamlen, |
4323 | conn->local_nls, 0); | |
e2f34481 NJ |
4324 | streamlen *= 2; |
4325 | kfree(stream_buf); | |
4326 | file_info->StreamNameLength = cpu_to_le32(streamlen); | |
4327 | file_info->StreamSize = cpu_to_le64(stream_name_len); | |
4328 | file_info->StreamAllocationSize = cpu_to_le64(stream_name_len); | |
4329 | ||
4330 | next = sizeof(struct smb2_file_stream_info) + streamlen; | |
4331 | nbytes += next; | |
4332 | file_info->NextEntryOffset = cpu_to_le32(next); | |
4333 | } | |
4334 | ||
4335 | if (nbytes) { | |
4336 | file_info = (struct smb2_file_stream_info *) | |
4337 | &rsp->Buffer[nbytes]; | |
4338 | streamlen = smbConvertToUTF16((__le16 *)file_info->StreamName, | |
070fb21e | 4339 | "::$DATA", 7, conn->local_nls, 0); |
e2f34481 NJ |
4340 | streamlen *= 2; |
4341 | file_info->StreamNameLength = cpu_to_le32(streamlen); | |
4342 | file_info->StreamSize = S_ISDIR(stat.mode) ? 0 : | |
4343 | cpu_to_le64(stat.size); | |
4344 | file_info->StreamAllocationSize = S_ISDIR(stat.mode) ? 0 : | |
4345 | cpu_to_le64(stat.size); | |
4346 | nbytes += sizeof(struct smb2_file_stream_info) + streamlen; | |
4347 | } | |
4348 | ||
4349 | /* last entry offset should be 0 */ | |
4350 | file_info->NextEntryOffset = 0; | |
4351 | out: | |
79f6b11a | 4352 | kvfree(xattr_list); |
e2f34481 NJ |
4353 | |
4354 | rsp->OutputBufferLength = cpu_to_le32(nbytes); | |
4355 | inc_rfc1001_len(rsp_org, nbytes); | |
4356 | } | |
4357 | ||
4358 | static void get_file_internal_info(struct smb2_query_info_rsp *rsp, | |
070fb21e | 4359 | struct ksmbd_file *fp, void *rsp_org) |
e2f34481 NJ |
4360 | { |
4361 | struct smb2_file_internal_info *file_info; | |
4362 | struct kstat stat; | |
4363 | ||
4364 | generic_fillattr(&init_user_ns, FP_INODE(fp), &stat); | |
4365 | file_info = (struct smb2_file_internal_info *)rsp->Buffer; | |
4366 | file_info->IndexNumber = cpu_to_le64(stat.ino); | |
4367 | rsp->OutputBufferLength = | |
4368 | cpu_to_le32(sizeof(struct smb2_file_internal_info)); | |
4369 | inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_internal_info)); | |
4370 | } | |
4371 | ||
4372 | static int get_file_network_open_info(struct smb2_query_info_rsp *rsp, | |
070fb21e | 4373 | struct ksmbd_file *fp, void *rsp_org) |
e2f34481 NJ |
4374 | { |
4375 | struct smb2_file_ntwrk_info *file_info; | |
4376 | struct inode *inode; | |
4377 | struct kstat stat; | |
4378 | u64 time; | |
4379 | ||
4380 | if (!(fp->daccess & FILE_READ_ATTRIBUTES_LE)) { | |
bde1694a NJ |
4381 | pr_err("no right to read the attributes : 0x%x\n", |
4382 | fp->daccess); | |
e2f34481 NJ |
4383 | return -EACCES; |
4384 | } | |
4385 | ||
4386 | file_info = (struct smb2_file_ntwrk_info *)rsp->Buffer; | |
4387 | ||
4388 | inode = FP_INODE(fp); | |
4389 | generic_fillattr(&init_user_ns, inode, &stat); | |
4390 | ||
4391 | file_info->CreationTime = cpu_to_le64(fp->create_time); | |
4392 | time = ksmbd_UnixTimeToNT(stat.atime); | |
4393 | file_info->LastAccessTime = cpu_to_le64(time); | |
4394 | time = ksmbd_UnixTimeToNT(stat.mtime); | |
4395 | file_info->LastWriteTime = cpu_to_le64(time); | |
4396 | time = ksmbd_UnixTimeToNT(stat.ctime); | |
4397 | file_info->ChangeTime = cpu_to_le64(time); | |
4398 | file_info->Attributes = fp->f_ci->m_fattr; | |
4399 | file_info->AllocationSize = | |
4400 | cpu_to_le64(get_allocation_size(inode, &stat)); | |
4401 | file_info->EndOfFile = S_ISDIR(stat.mode) ? 0 : cpu_to_le64(stat.size); | |
4402 | file_info->Reserved = cpu_to_le32(0); | |
4403 | rsp->OutputBufferLength = | |
4404 | cpu_to_le32(sizeof(struct smb2_file_ntwrk_info)); | |
4405 | inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_ntwrk_info)); | |
4406 | return 0; | |
4407 | } | |
4408 | ||
64b39f4a | 4409 | static void get_file_ea_info(struct smb2_query_info_rsp *rsp, void *rsp_org) |
e2f34481 NJ |
4410 | { |
4411 | struct smb2_file_ea_info *file_info; | |
4412 | ||
4413 | file_info = (struct smb2_file_ea_info *)rsp->Buffer; | |
4414 | file_info->EASize = 0; | |
4415 | rsp->OutputBufferLength = | |
4416 | cpu_to_le32(sizeof(struct smb2_file_ea_info)); | |
4417 | inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_ea_info)); | |
4418 | } | |
4419 | ||
4420 | static void get_file_position_info(struct smb2_query_info_rsp *rsp, | |
070fb21e | 4421 | struct ksmbd_file *fp, void *rsp_org) |
e2f34481 NJ |
4422 | { |
4423 | struct smb2_file_pos_info *file_info; | |
4424 | ||
4425 | file_info = (struct smb2_file_pos_info *)rsp->Buffer; | |
4426 | file_info->CurrentByteOffset = cpu_to_le64(fp->filp->f_pos); | |
4427 | rsp->OutputBufferLength = | |
4428 | cpu_to_le32(sizeof(struct smb2_file_pos_info)); | |
4429 | inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_pos_info)); | |
4430 | } | |
4431 | ||
4432 | static void get_file_mode_info(struct smb2_query_info_rsp *rsp, | |
070fb21e | 4433 | struct ksmbd_file *fp, void *rsp_org) |
e2f34481 NJ |
4434 | { |
4435 | struct smb2_file_mode_info *file_info; | |
4436 | ||
4437 | file_info = (struct smb2_file_mode_info *)rsp->Buffer; | |
4438 | file_info->Mode = fp->coption & FILE_MODE_INFO_MASK; | |
4439 | rsp->OutputBufferLength = | |
4440 | cpu_to_le32(sizeof(struct smb2_file_mode_info)); | |
4441 | inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_mode_info)); | |
4442 | } | |
4443 | ||
4444 | static void get_file_compression_info(struct smb2_query_info_rsp *rsp, | |
070fb21e | 4445 | struct ksmbd_file *fp, void *rsp_org) |
e2f34481 NJ |
4446 | { |
4447 | struct smb2_file_comp_info *file_info; | |
4448 | struct kstat stat; | |
4449 | ||
4450 | generic_fillattr(&init_user_ns, FP_INODE(fp), &stat); | |
4451 | ||
4452 | file_info = (struct smb2_file_comp_info *)rsp->Buffer; | |
4453 | file_info->CompressedFileSize = cpu_to_le64(stat.blocks << 9); | |
4454 | file_info->CompressionFormat = COMPRESSION_FORMAT_NONE; | |
4455 | file_info->CompressionUnitShift = 0; | |
4456 | file_info->ChunkShift = 0; | |
4457 | file_info->ClusterShift = 0; | |
4458 | memset(&file_info->Reserved[0], 0, 3); | |
4459 | ||
4460 | rsp->OutputBufferLength = | |
4461 | cpu_to_le32(sizeof(struct smb2_file_comp_info)); | |
4462 | inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_comp_info)); | |
4463 | } | |
4464 | ||
4465 | static int get_file_attribute_tag_info(struct smb2_query_info_rsp *rsp, | |
070fb21e | 4466 | struct ksmbd_file *fp, void *rsp_org) |
e2f34481 NJ |
4467 | { |
4468 | struct smb2_file_attr_tag_info *file_info; | |
4469 | ||
4470 | if (!(fp->daccess & FILE_READ_ATTRIBUTES_LE)) { | |
bde1694a NJ |
4471 | pr_err("no right to read the attributes : 0x%x\n", |
4472 | fp->daccess); | |
e2f34481 NJ |
4473 | return -EACCES; |
4474 | } | |
4475 | ||
4476 | file_info = (struct smb2_file_attr_tag_info *)rsp->Buffer; | |
4477 | file_info->FileAttributes = fp->f_ci->m_fattr; | |
4478 | file_info->ReparseTag = 0; | |
4479 | rsp->OutputBufferLength = | |
4480 | cpu_to_le32(sizeof(struct smb2_file_attr_tag_info)); | |
070fb21e | 4481 | inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_attr_tag_info)); |
e2f34481 NJ |
4482 | return 0; |
4483 | } | |
4484 | ||
4485 | static int find_file_posix_info(struct smb2_query_info_rsp *rsp, | |
070fb21e | 4486 | struct ksmbd_file *fp, void *rsp_org) |
e2f34481 NJ |
4487 | { |
4488 | struct smb311_posix_qinfo *file_info; | |
4489 | struct inode *inode = FP_INODE(fp); | |
4490 | u64 time; | |
4491 | ||
4492 | file_info = (struct smb311_posix_qinfo *)rsp->Buffer; | |
4493 | file_info->CreationTime = cpu_to_le64(fp->create_time); | |
4494 | time = ksmbd_UnixTimeToNT(inode->i_atime); | |
4495 | file_info->LastAccessTime = cpu_to_le64(time); | |
4496 | time = ksmbd_UnixTimeToNT(inode->i_mtime); | |
4497 | file_info->LastWriteTime = cpu_to_le64(time); | |
4498 | time = ksmbd_UnixTimeToNT(inode->i_ctime); | |
4499 | file_info->ChangeTime = cpu_to_le64(time); | |
4500 | file_info->DosAttributes = fp->f_ci->m_fattr; | |
4501 | file_info->Inode = cpu_to_le64(inode->i_ino); | |
4502 | file_info->EndOfFile = cpu_to_le64(inode->i_size); | |
4503 | file_info->AllocationSize = cpu_to_le64(inode->i_blocks << 9); | |
4504 | file_info->HardLinks = cpu_to_le32(inode->i_nlink); | |
4505 | file_info->Mode = cpu_to_le32(inode->i_mode); | |
4506 | file_info->DeviceId = cpu_to_le32(inode->i_rdev); | |
4507 | rsp->OutputBufferLength = | |
4508 | cpu_to_le32(sizeof(struct smb311_posix_qinfo)); | |
64b39f4a | 4509 | inc_rfc1001_len(rsp_org, sizeof(struct smb311_posix_qinfo)); |
e2f34481 NJ |
4510 | return 0; |
4511 | } | |
4512 | ||
e2f34481 | 4513 | static int smb2_get_info_file(struct ksmbd_work *work, |
070fb21e NJ |
4514 | struct smb2_query_info_req *req, |
4515 | struct smb2_query_info_rsp *rsp, void *rsp_org) | |
e2f34481 NJ |
4516 | { |
4517 | struct ksmbd_file *fp; | |
4518 | int fileinfoclass = 0; | |
4519 | int rc = 0; | |
4520 | int file_infoclass_size; | |
4521 | unsigned int id = KSMBD_NO_FID, pid = KSMBD_NO_FID; | |
4522 | ||
4523 | if (test_share_config_flag(work->tcon->share_conf, | |
64b39f4a | 4524 | KSMBD_SHARE_FLAG_PIPE)) { |
e2f34481 NJ |
4525 | /* smb2 info file called for pipe */ |
4526 | return smb2_get_info_file_pipe(work->sess, req, rsp); | |
4527 | } | |
4528 | ||
4529 | if (work->next_smb2_rcv_hdr_off) { | |
4530 | if (!HAS_FILE_ID(le64_to_cpu(req->VolatileFileId))) { | |
4531 | ksmbd_debug(SMB, "Compound request set FID = %u\n", | |
070fb21e | 4532 | work->compound_fid); |
e2f34481 NJ |
4533 | id = work->compound_fid; |
4534 | pid = work->compound_pfid; | |
4535 | } | |
4536 | } | |
4537 | ||
4538 | if (!HAS_FILE_ID(id)) { | |
4539 | id = le64_to_cpu(req->VolatileFileId); | |
4540 | pid = le64_to_cpu(req->PersistentFileId); | |
4541 | } | |
4542 | ||
4543 | fp = ksmbd_lookup_fd_slow(work, id, pid); | |
4544 | if (!fp) | |
4545 | return -ENOENT; | |
4546 | ||
4547 | fileinfoclass = req->FileInfoClass; | |
4548 | ||
4549 | switch (fileinfoclass) { | |
4550 | case FILE_ACCESS_INFORMATION: | |
4551 | get_file_access_info(rsp, fp, rsp_org); | |
4552 | file_infoclass_size = FILE_ACCESS_INFORMATION_SIZE; | |
4553 | break; | |
4554 | ||
4555 | case FILE_BASIC_INFORMATION: | |
4556 | rc = get_file_basic_info(rsp, fp, rsp_org); | |
4557 | file_infoclass_size = FILE_BASIC_INFORMATION_SIZE; | |
4558 | break; | |
4559 | ||
4560 | case FILE_STANDARD_INFORMATION: | |
4561 | get_file_standard_info(rsp, fp, rsp_org); | |
4562 | file_infoclass_size = FILE_STANDARD_INFORMATION_SIZE; | |
4563 | break; | |
4564 | ||
4565 | case FILE_ALIGNMENT_INFORMATION: | |
4566 | get_file_alignment_info(rsp, rsp_org); | |
4567 | file_infoclass_size = FILE_ALIGNMENT_INFORMATION_SIZE; | |
4568 | break; | |
4569 | ||
4570 | case FILE_ALL_INFORMATION: | |
4571 | rc = get_file_all_info(work, rsp, fp, rsp_org); | |
4572 | file_infoclass_size = FILE_ALL_INFORMATION_SIZE; | |
4573 | break; | |
4574 | ||
4575 | case FILE_ALTERNATE_NAME_INFORMATION: | |
4576 | get_file_alternate_info(work, rsp, fp, rsp_org); | |
4577 | file_infoclass_size = FILE_ALTERNATE_NAME_INFORMATION_SIZE; | |
4578 | break; | |
4579 | ||
4580 | case FILE_STREAM_INFORMATION: | |
4581 | get_file_stream_info(work, rsp, fp, rsp_org); | |
4582 | file_infoclass_size = FILE_STREAM_INFORMATION_SIZE; | |
4583 | break; | |
4584 | ||
4585 | case FILE_INTERNAL_INFORMATION: | |
4586 | get_file_internal_info(rsp, fp, rsp_org); | |
4587 | file_infoclass_size = FILE_INTERNAL_INFORMATION_SIZE; | |
4588 | break; | |
4589 | ||
4590 | case FILE_NETWORK_OPEN_INFORMATION: | |
4591 | rc = get_file_network_open_info(rsp, fp, rsp_org); | |
4592 | file_infoclass_size = FILE_NETWORK_OPEN_INFORMATION_SIZE; | |
4593 | break; | |
4594 | ||
4595 | case FILE_EA_INFORMATION: | |
4596 | get_file_ea_info(rsp, rsp_org); | |
4597 | file_infoclass_size = FILE_EA_INFORMATION_SIZE; | |
4598 | break; | |
4599 | ||
4600 | case FILE_FULL_EA_INFORMATION: | |
4601 | rc = smb2_get_ea(work, fp, req, rsp, rsp_org); | |
4602 | file_infoclass_size = FILE_FULL_EA_INFORMATION_SIZE; | |
4603 | break; | |
4604 | ||
4605 | case FILE_POSITION_INFORMATION: | |
4606 | get_file_position_info(rsp, fp, rsp_org); | |
4607 | file_infoclass_size = FILE_POSITION_INFORMATION_SIZE; | |
4608 | break; | |
4609 | ||
4610 | case FILE_MODE_INFORMATION: | |
4611 | get_file_mode_info(rsp, fp, rsp_org); | |
4612 | file_infoclass_size = FILE_MODE_INFORMATION_SIZE; | |
4613 | break; | |
4614 | ||
4615 | case FILE_COMPRESSION_INFORMATION: | |
4616 | get_file_compression_info(rsp, fp, rsp_org); | |
4617 | file_infoclass_size = FILE_COMPRESSION_INFORMATION_SIZE; | |
4618 | break; | |
4619 | ||
4620 | case FILE_ATTRIBUTE_TAG_INFORMATION: | |
4621 | rc = get_file_attribute_tag_info(rsp, fp, rsp_org); | |
4622 | file_infoclass_size = FILE_ATTRIBUTE_TAG_INFORMATION_SIZE; | |
4623 | break; | |
4624 | case SMB_FIND_FILE_POSIX_INFO: | |
4625 | if (!work->tcon->posix_extensions) { | |
bde1694a | 4626 | pr_err("client doesn't negotiate with SMB3.1.1 POSIX Extensions\n"); |
e2f34481 NJ |
4627 | rc = -EOPNOTSUPP; |
4628 | } else { | |
4629 | rc = find_file_posix_info(rsp, fp, rsp_org); | |
4630 | file_infoclass_size = sizeof(struct smb311_posix_qinfo); | |
4631 | } | |
4632 | break; | |
4633 | default: | |
4634 | ksmbd_debug(SMB, "fileinfoclass %d not supported yet\n", | |
4635 | fileinfoclass); | |
4636 | rc = -EOPNOTSUPP; | |
4637 | } | |
4638 | if (!rc) | |
4639 | rc = buffer_check_err(le32_to_cpu(req->OutputBufferLength), | |
4640 | rsp, | |
4641 | file_infoclass_size); | |
4642 | ksmbd_fd_put(work, fp); | |
4643 | return rc; | |
4644 | } | |
4645 | ||
e2f34481 | 4646 | static int smb2_get_info_filesystem(struct ksmbd_work *work, |
070fb21e NJ |
4647 | struct smb2_query_info_req *req, |
4648 | struct smb2_query_info_rsp *rsp, void *rsp_org) | |
e2f34481 NJ |
4649 | { |
4650 | struct ksmbd_session *sess = work->sess; | |
4651 | struct ksmbd_conn *conn = sess->conn; | |
4652 | struct ksmbd_share_config *share = work->tcon->share_conf; | |
4653 | int fsinfoclass = 0; | |
4654 | struct kstatfs stfs; | |
4655 | struct path path; | |
4656 | int rc = 0, len; | |
4657 | int fs_infoclass_size = 0; | |
a6a5fa77 | 4658 | int lookup_flags = 0; |
e2f34481 | 4659 | |
a6a5fa77 HL |
4660 | if (test_share_config_flag(share, KSMBD_SHARE_FLAG_FOLLOW_SYMLINKS)) |
4661 | lookup_flags = LOOKUP_FOLLOW; | |
4662 | ||
4663 | rc = ksmbd_vfs_kern_path(share->path, lookup_flags, &path, 0); | |
e2f34481 | 4664 | if (rc) { |
bde1694a | 4665 | pr_err("cannot create vfs path\n"); |
e2f34481 NJ |
4666 | return -EIO; |
4667 | } | |
4668 | ||
4669 | rc = vfs_statfs(&path, &stfs); | |
4670 | if (rc) { | |
bde1694a | 4671 | pr_err("cannot do stat of path %s\n", share->path); |
e2f34481 NJ |
4672 | path_put(&path); |
4673 | return -EIO; | |
4674 | } | |
4675 | ||
4676 | fsinfoclass = req->FileInfoClass; | |
4677 | ||
4678 | switch (fsinfoclass) { | |
4679 | case FS_DEVICE_INFORMATION: | |
4680 | { | |
4681 | struct filesystem_device_info *info; | |
4682 | ||
4683 | info = (struct filesystem_device_info *)rsp->Buffer; | |
4684 | ||
4685 | info->DeviceType = cpu_to_le32(stfs.f_type); | |
4686 | info->DeviceCharacteristics = cpu_to_le32(0x00000020); | |
4687 | rsp->OutputBufferLength = cpu_to_le32(8); | |
4688 | inc_rfc1001_len(rsp_org, 8); | |
4689 | fs_infoclass_size = FS_DEVICE_INFORMATION_SIZE; | |
4690 | break; | |
4691 | } | |
4692 | case FS_ATTRIBUTE_INFORMATION: | |
4693 | { | |
4694 | struct filesystem_attribute_info *info; | |
4695 | size_t sz; | |
4696 | ||
4697 | info = (struct filesystem_attribute_info *)rsp->Buffer; | |
4698 | info->Attributes = cpu_to_le32(FILE_SUPPORTS_OBJECT_IDS | | |
4699 | FILE_PERSISTENT_ACLS | | |
4700 | FILE_UNICODE_ON_DISK | | |
4701 | FILE_CASE_PRESERVED_NAMES | | |
eb817368 NJ |
4702 | FILE_CASE_SENSITIVE_SEARCH | |
4703 | FILE_SUPPORTS_BLOCK_REFCOUNTING); | |
e2f34481 NJ |
4704 | |
4705 | info->Attributes |= cpu_to_le32(server_conf.share_fake_fscaps); | |
4706 | ||
4707 | info->MaxPathNameComponentLength = cpu_to_le32(stfs.f_namelen); | |
4708 | len = smbConvertToUTF16((__le16 *)info->FileSystemName, | |
4709 | "NTFS", PATH_MAX, conn->local_nls, 0); | |
4710 | len = len * 2; | |
4711 | info->FileSystemNameLen = cpu_to_le32(len); | |
4712 | sz = sizeof(struct filesystem_attribute_info) - 2 + len; | |
4713 | rsp->OutputBufferLength = cpu_to_le32(sz); | |
4714 | inc_rfc1001_len(rsp_org, sz); | |
4715 | fs_infoclass_size = FS_ATTRIBUTE_INFORMATION_SIZE; | |
4716 | break; | |
4717 | } | |
4718 | case FS_VOLUME_INFORMATION: | |
4719 | { | |
4720 | struct filesystem_vol_info *info; | |
4721 | size_t sz; | |
4722 | ||
4723 | info = (struct filesystem_vol_info *)(rsp->Buffer); | |
4724 | info->VolumeCreationTime = 0; | |
4725 | /* Taking dummy value of serial number*/ | |
4726 | info->SerialNumber = cpu_to_le32(0xbc3ac512); | |
4727 | len = smbConvertToUTF16((__le16 *)info->VolumeLabel, | |
4728 | share->name, PATH_MAX, | |
4729 | conn->local_nls, 0); | |
4730 | len = len * 2; | |
4731 | info->VolumeLabelSize = cpu_to_le32(len); | |
4732 | info->Reserved = 0; | |
4733 | sz = sizeof(struct filesystem_vol_info) - 2 + len; | |
4734 | rsp->OutputBufferLength = cpu_to_le32(sz); | |
4735 | inc_rfc1001_len(rsp_org, sz); | |
4736 | fs_infoclass_size = FS_VOLUME_INFORMATION_SIZE; | |
4737 | break; | |
4738 | } | |
4739 | case FS_SIZE_INFORMATION: | |
4740 | { | |
4741 | struct filesystem_info *info; | |
e2f34481 NJ |
4742 | |
4743 | info = (struct filesystem_info *)(rsp->Buffer); | |
e2f34481 NJ |
4744 | info->TotalAllocationUnits = cpu_to_le64(stfs.f_blocks); |
4745 | info->FreeAllocationUnits = cpu_to_le64(stfs.f_bfree); | |
ee81cae1 NJ |
4746 | info->SectorsPerAllocationUnit = cpu_to_le32(1); |
4747 | info->BytesPerSector = cpu_to_le32(stfs.f_bsize); | |
e2f34481 NJ |
4748 | rsp->OutputBufferLength = cpu_to_le32(24); |
4749 | inc_rfc1001_len(rsp_org, 24); | |
4750 | fs_infoclass_size = FS_SIZE_INFORMATION_SIZE; | |
4751 | break; | |
4752 | } | |
4753 | case FS_FULL_SIZE_INFORMATION: | |
4754 | { | |
4755 | struct smb2_fs_full_size_info *info; | |
e2f34481 NJ |
4756 | |
4757 | info = (struct smb2_fs_full_size_info *)(rsp->Buffer); | |
e2f34481 NJ |
4758 | info->TotalAllocationUnits = cpu_to_le64(stfs.f_blocks); |
4759 | info->CallerAvailableAllocationUnits = | |
4760 | cpu_to_le64(stfs.f_bavail); | |
4761 | info->ActualAvailableAllocationUnits = | |
4762 | cpu_to_le64(stfs.f_bfree); | |
ee81cae1 NJ |
4763 | info->SectorsPerAllocationUnit = cpu_to_le32(1); |
4764 | info->BytesPerSector = cpu_to_le32(stfs.f_bsize); | |
e2f34481 NJ |
4765 | rsp->OutputBufferLength = cpu_to_le32(32); |
4766 | inc_rfc1001_len(rsp_org, 32); | |
4767 | fs_infoclass_size = FS_FULL_SIZE_INFORMATION_SIZE; | |
4768 | break; | |
4769 | } | |
4770 | case FS_OBJECT_ID_INFORMATION: | |
4771 | { | |
4772 | struct object_id_info *info; | |
4773 | ||
4774 | info = (struct object_id_info *)(rsp->Buffer); | |
4775 | ||
4776 | if (!user_guest(sess->user)) | |
4777 | memcpy(info->objid, user_passkey(sess->user), 16); | |
4778 | else | |
4779 | memset(info->objid, 0, 16); | |
4780 | ||
4781 | info->extended_info.magic = cpu_to_le32(EXTENDED_INFO_MAGIC); | |
4782 | info->extended_info.version = cpu_to_le32(1); | |
4783 | info->extended_info.release = cpu_to_le32(1); | |
4784 | info->extended_info.rel_date = 0; | |
64b39f4a | 4785 | memcpy(info->extended_info.version_string, "1.1.0", strlen("1.1.0")); |
e2f34481 NJ |
4786 | rsp->OutputBufferLength = cpu_to_le32(64); |
4787 | inc_rfc1001_len(rsp_org, 64); | |
4788 | fs_infoclass_size = FS_OBJECT_ID_INFORMATION_SIZE; | |
4789 | break; | |
4790 | } | |
4791 | case FS_SECTOR_SIZE_INFORMATION: | |
4792 | { | |
4793 | struct smb3_fs_ss_info *info; | |
4794 | struct ksmbd_fs_sector_size fs_ss; | |
4795 | ||
4796 | info = (struct smb3_fs_ss_info *)(rsp->Buffer); | |
4797 | ksmbd_vfs_smb2_sector_size(d_inode(path.dentry), &fs_ss); | |
4798 | ||
4799 | info->LogicalBytesPerSector = | |
4800 | cpu_to_le32(fs_ss.logical_sector_size); | |
4801 | info->PhysicalBytesPerSectorForAtomicity = | |
4802 | cpu_to_le32(fs_ss.physical_sector_size); | |
4803 | info->PhysicalBytesPerSectorForPerf = | |
4804 | cpu_to_le32(fs_ss.optimal_io_size); | |
4805 | info->FSEffPhysicalBytesPerSectorForAtomicity = | |
4806 | cpu_to_le32(fs_ss.optimal_io_size); | |
4807 | info->Flags = cpu_to_le32(SSINFO_FLAGS_ALIGNED_DEVICE | | |
4808 | SSINFO_FLAGS_PARTITION_ALIGNED_ON_DEVICE); | |
4809 | info->ByteOffsetForSectorAlignment = 0; | |
4810 | info->ByteOffsetForPartitionAlignment = 0; | |
4811 | rsp->OutputBufferLength = cpu_to_le32(28); | |
4812 | inc_rfc1001_len(rsp_org, 28); | |
4813 | fs_infoclass_size = FS_SECTOR_SIZE_INFORMATION_SIZE; | |
4814 | break; | |
4815 | } | |
4816 | case FS_CONTROL_INFORMATION: | |
4817 | { | |
4818 | /* | |
4819 | * TODO : The current implementation is based on | |
4820 | * test result with win7(NTFS) server. It's need to | |
4821 | * modify this to get valid Quota values | |
4822 | * from Linux kernel | |
4823 | */ | |
4824 | struct smb2_fs_control_info *info; | |
4825 | ||
4826 | info = (struct smb2_fs_control_info *)(rsp->Buffer); | |
4827 | info->FreeSpaceStartFiltering = 0; | |
4828 | info->FreeSpaceThreshold = 0; | |
4829 | info->FreeSpaceStopFiltering = 0; | |
4830 | info->DefaultQuotaThreshold = cpu_to_le64(SMB2_NO_FID); | |
4831 | info->DefaultQuotaLimit = cpu_to_le64(SMB2_NO_FID); | |
4832 | info->Padding = 0; | |
4833 | rsp->OutputBufferLength = cpu_to_le32(48); | |
4834 | inc_rfc1001_len(rsp_org, 48); | |
4835 | fs_infoclass_size = FS_CONTROL_INFORMATION_SIZE; | |
4836 | break; | |
4837 | } | |
4838 | case FS_POSIX_INFORMATION: | |
4839 | { | |
4840 | struct filesystem_posix_info *info; | |
e2f34481 NJ |
4841 | |
4842 | if (!work->tcon->posix_extensions) { | |
bde1694a | 4843 | pr_err("client doesn't negotiate with SMB3.1.1 POSIX Extensions\n"); |
e2f34481 NJ |
4844 | rc = -EOPNOTSUPP; |
4845 | } else { | |
4846 | info = (struct filesystem_posix_info *)(rsp->Buffer); | |
ee81cae1 | 4847 | info->OptimalTransferSize = cpu_to_le32(stfs.f_bsize); |
e2f34481 NJ |
4848 | info->BlockSize = cpu_to_le32(stfs.f_bsize); |
4849 | info->TotalBlocks = cpu_to_le64(stfs.f_blocks); | |
4850 | info->BlocksAvail = cpu_to_le64(stfs.f_bfree); | |
4851 | info->UserBlocksAvail = cpu_to_le64(stfs.f_bavail); | |
4852 | info->TotalFileNodes = cpu_to_le64(stfs.f_files); | |
4853 | info->FreeFileNodes = cpu_to_le64(stfs.f_ffree); | |
4854 | rsp->OutputBufferLength = cpu_to_le32(56); | |
4855 | inc_rfc1001_len(rsp_org, 56); | |
4856 | fs_infoclass_size = FS_POSIX_INFORMATION_SIZE; | |
4857 | } | |
4858 | break; | |
4859 | } | |
4860 | default: | |
4861 | path_put(&path); | |
4862 | return -EOPNOTSUPP; | |
4863 | } | |
4864 | rc = buffer_check_err(le32_to_cpu(req->OutputBufferLength), | |
4865 | rsp, | |
4866 | fs_infoclass_size); | |
4867 | path_put(&path); | |
4868 | return rc; | |
4869 | } | |
4870 | ||
4871 | static int smb2_get_info_sec(struct ksmbd_work *work, | |
070fb21e NJ |
4872 | struct smb2_query_info_req *req, |
4873 | struct smb2_query_info_rsp *rsp, void *rsp_org) | |
e2f34481 NJ |
4874 | { |
4875 | struct ksmbd_file *fp; | |
4876 | struct smb_ntsd *pntsd = (struct smb_ntsd *)rsp->Buffer, *ppntsd = NULL; | |
4877 | struct smb_fattr fattr = {{0}}; | |
4878 | struct inode *inode; | |
4879 | __u32 secdesclen; | |
4880 | unsigned int id = KSMBD_NO_FID, pid = KSMBD_NO_FID; | |
4881 | int addition_info = le32_to_cpu(req->AdditionalInformation); | |
4882 | int rc; | |
4883 | ||
ced2b26a SG |
4884 | if (addition_info & ~(OWNER_SECINFO | GROUP_SECINFO | DACL_SECINFO)) { |
4885 | ksmbd_debug(SMB, "Unsupported addition info: 0x%x)\n", | |
070fb21e | 4886 | addition_info); |
ced2b26a SG |
4887 | |
4888 | pntsd->revision = cpu_to_le16(1); | |
4889 | pntsd->type = cpu_to_le16(SELF_RELATIVE | DACL_PROTECTED); | |
4890 | pntsd->osidoffset = 0; | |
4891 | pntsd->gsidoffset = 0; | |
4892 | pntsd->sacloffset = 0; | |
4893 | pntsd->dacloffset = 0; | |
4894 | ||
4895 | secdesclen = sizeof(struct smb_ntsd); | |
4896 | rsp->OutputBufferLength = cpu_to_le32(secdesclen); | |
4897 | inc_rfc1001_len(rsp_org, secdesclen); | |
4898 | ||
4899 | return 0; | |
4900 | } | |
4901 | ||
e2f34481 NJ |
4902 | if (work->next_smb2_rcv_hdr_off) { |
4903 | if (!HAS_FILE_ID(le64_to_cpu(req->VolatileFileId))) { | |
4904 | ksmbd_debug(SMB, "Compound request set FID = %u\n", | |
070fb21e | 4905 | work->compound_fid); |
e2f34481 NJ |
4906 | id = work->compound_fid; |
4907 | pid = work->compound_pfid; | |
4908 | } | |
4909 | } | |
4910 | ||
4911 | if (!HAS_FILE_ID(id)) { | |
4912 | id = le64_to_cpu(req->VolatileFileId); | |
4913 | pid = le64_to_cpu(req->PersistentFileId); | |
4914 | } | |
4915 | ||
4916 | fp = ksmbd_lookup_fd_slow(work, id, pid); | |
4917 | if (!fp) | |
4918 | return -ENOENT; | |
4919 | ||
4920 | inode = FP_INODE(fp); | |
3d47e546 | 4921 | ksmbd_acls_fattr(&fattr, inode); |
e2f34481 NJ |
4922 | |
4923 | if (test_share_config_flag(work->tcon->share_conf, | |
64b39f4a | 4924 | KSMBD_SHARE_FLAG_ACL_XATTR)) |
e2f34481 NJ |
4925 | ksmbd_vfs_get_sd_xattr(work->conn, fp->filp->f_path.dentry, &ppntsd); |
4926 | ||
4927 | rc = build_sec_desc(pntsd, ppntsd, addition_info, &secdesclen, &fattr); | |
4928 | posix_acl_release(fattr.cf_acls); | |
4929 | posix_acl_release(fattr.cf_dacls); | |
4930 | kfree(ppntsd); | |
4931 | ksmbd_fd_put(work, fp); | |
4932 | if (rc) | |
4933 | return rc; | |
4934 | ||
4935 | rsp->OutputBufferLength = cpu_to_le32(secdesclen); | |
4936 | inc_rfc1001_len(rsp_org, secdesclen); | |
4937 | return 0; | |
4938 | } | |
4939 | ||
4940 | /** | |
4941 | * smb2_query_info() - handler for smb2 query info command | |
4942 | * @work: smb work containing query info request buffer | |
4943 | * | |
4944 | * Return: 0 on success, otherwise error | |
4945 | */ | |
4946 | int smb2_query_info(struct ksmbd_work *work) | |
4947 | { | |
4948 | struct smb2_query_info_req *req; | |
4949 | struct smb2_query_info_rsp *rsp, *rsp_org; | |
4950 | int rc = 0; | |
4951 | ||
e5066499 | 4952 | rsp_org = work->response_buf; |
e2f34481 NJ |
4953 | WORK_BUFFERS(work, req, rsp); |
4954 | ||
4955 | ksmbd_debug(SMB, "GOT query info request\n"); | |
4956 | ||
4957 | switch (req->InfoType) { | |
4958 | case SMB2_O_INFO_FILE: | |
4959 | ksmbd_debug(SMB, "GOT SMB2_O_INFO_FILE\n"); | |
4960 | rc = smb2_get_info_file(work, req, rsp, (void *)rsp_org); | |
4961 | break; | |
4962 | case SMB2_O_INFO_FILESYSTEM: | |
4963 | ksmbd_debug(SMB, "GOT SMB2_O_INFO_FILESYSTEM\n"); | |
4964 | rc = smb2_get_info_filesystem(work, req, rsp, (void *)rsp_org); | |
4965 | break; | |
4966 | case SMB2_O_INFO_SECURITY: | |
4967 | ksmbd_debug(SMB, "GOT SMB2_O_INFO_SECURITY\n"); | |
4968 | rc = smb2_get_info_sec(work, req, rsp, (void *)rsp_org); | |
4969 | break; | |
4970 | default: | |
4971 | ksmbd_debug(SMB, "InfoType %d not supported yet\n", | |
070fb21e | 4972 | req->InfoType); |
e2f34481 NJ |
4973 | rc = -EOPNOTSUPP; |
4974 | } | |
4975 | ||
4976 | if (rc < 0) { | |
4977 | if (rc == -EACCES) | |
4978 | rsp->hdr.Status = STATUS_ACCESS_DENIED; | |
4979 | else if (rc == -ENOENT) | |
4980 | rsp->hdr.Status = STATUS_FILE_CLOSED; | |
4981 | else if (rc == -EIO) | |
4982 | rsp->hdr.Status = STATUS_UNEXPECTED_IO_ERROR; | |
4983 | else if (rc == -EOPNOTSUPP || rsp->hdr.Status == 0) | |
4984 | rsp->hdr.Status = STATUS_INVALID_INFO_CLASS; | |
4985 | smb2_set_err_rsp(work); | |
4986 | ||
4987 | ksmbd_debug(SMB, "error while processing smb2 query rc = %d\n", | |
070fb21e | 4988 | rc); |
e2f34481 NJ |
4989 | return rc; |
4990 | } | |
4991 | rsp->StructureSize = cpu_to_le16(9); | |
4992 | rsp->OutputBufferOffset = cpu_to_le16(72); | |
4993 | inc_rfc1001_len(rsp_org, 8); | |
4994 | return 0; | |
4995 | } | |
4996 | ||
4997 | /** | |
4998 | * smb2_close_pipe() - handler for closing IPC pipe | |
4999 | * @work: smb work containing close request buffer | |
5000 | * | |
5001 | * Return: 0 | |
5002 | */ | |
5003 | static noinline int smb2_close_pipe(struct ksmbd_work *work) | |
5004 | { | |
64b39f4a | 5005 | u64 id; |
e5066499 NJ |
5006 | struct smb2_close_req *req = work->request_buf; |
5007 | struct smb2_close_rsp *rsp = work->response_buf; | |
e2f34481 NJ |
5008 | |
5009 | id = le64_to_cpu(req->VolatileFileId); | |
5010 | ksmbd_session_rpc_close(work->sess, id); | |
5011 | ||
5012 | rsp->StructureSize = cpu_to_le16(60); | |
5013 | rsp->Flags = 0; | |
5014 | rsp->Reserved = 0; | |
5015 | rsp->CreationTime = 0; | |
5016 | rsp->LastAccessTime = 0; | |
5017 | rsp->LastWriteTime = 0; | |
5018 | rsp->ChangeTime = 0; | |
5019 | rsp->AllocationSize = 0; | |
5020 | rsp->EndOfFile = 0; | |
5021 | rsp->Attributes = 0; | |
5022 | inc_rfc1001_len(rsp, 60); | |
5023 | return 0; | |
5024 | } | |
5025 | ||
5026 | /** | |
5027 | * smb2_close() - handler for smb2 close file command | |
5028 | * @work: smb work containing close request buffer | |
5029 | * | |
5030 | * Return: 0 | |
5031 | */ | |
5032 | int smb2_close(struct ksmbd_work *work) | |
5033 | { | |
5034 | unsigned int volatile_id = KSMBD_NO_FID; | |
64b39f4a | 5035 | u64 sess_id; |
e2f34481 NJ |
5036 | struct smb2_close_req *req; |
5037 | struct smb2_close_rsp *rsp; | |
5038 | struct smb2_close_rsp *rsp_org; | |
5039 | struct ksmbd_conn *conn = work->conn; | |
5040 | struct ksmbd_file *fp; | |
5041 | struct inode *inode; | |
5042 | u64 time; | |
5043 | int err = 0; | |
5044 | ||
e5066499 | 5045 | rsp_org = work->response_buf; |
e2f34481 NJ |
5046 | WORK_BUFFERS(work, req, rsp); |
5047 | ||
5048 | if (test_share_config_flag(work->tcon->share_conf, | |
5049 | KSMBD_SHARE_FLAG_PIPE)) { | |
5050 | ksmbd_debug(SMB, "IPC pipe close request\n"); | |
5051 | return smb2_close_pipe(work); | |
5052 | } | |
5053 | ||
5054 | sess_id = le64_to_cpu(req->hdr.SessionId); | |
5055 | if (req->hdr.Flags & SMB2_FLAGS_RELATED_OPERATIONS) | |
5056 | sess_id = work->compound_sid; | |
5057 | ||
5058 | work->compound_sid = 0; | |
64b39f4a | 5059 | if (check_session_id(conn, sess_id)) { |
e2f34481 | 5060 | work->compound_sid = sess_id; |
64b39f4a | 5061 | } else { |
e2f34481 NJ |
5062 | rsp->hdr.Status = STATUS_USER_SESSION_DELETED; |
5063 | if (req->hdr.Flags & SMB2_FLAGS_RELATED_OPERATIONS) | |
5064 | rsp->hdr.Status = STATUS_INVALID_PARAMETER; | |
5065 | err = -EBADF; | |
5066 | goto out; | |
5067 | } | |
5068 | ||
5069 | if (work->next_smb2_rcv_hdr_off && | |
64b39f4a | 5070 | !HAS_FILE_ID(le64_to_cpu(req->VolatileFileId))) { |
e2f34481 NJ |
5071 | if (!HAS_FILE_ID(work->compound_fid)) { |
5072 | /* file already closed, return FILE_CLOSED */ | |
5073 | ksmbd_debug(SMB, "file already closed\n"); | |
5074 | rsp->hdr.Status = STATUS_FILE_CLOSED; | |
5075 | err = -EBADF; | |
5076 | goto out; | |
5077 | } else { | |
5078 | ksmbd_debug(SMB, "Compound request set FID = %u:%u\n", | |
070fb21e NJ |
5079 | work->compound_fid, |
5080 | work->compound_pfid); | |
e2f34481 NJ |
5081 | volatile_id = work->compound_fid; |
5082 | ||
5083 | /* file closed, stored id is not valid anymore */ | |
5084 | work->compound_fid = KSMBD_NO_FID; | |
5085 | work->compound_pfid = KSMBD_NO_FID; | |
5086 | } | |
5087 | } else { | |
5088 | volatile_id = le64_to_cpu(req->VolatileFileId); | |
5089 | } | |
5090 | ksmbd_debug(SMB, "volatile_id = %u\n", volatile_id); | |
5091 | ||
5092 | rsp->StructureSize = cpu_to_le16(60); | |
5093 | rsp->Reserved = 0; | |
5094 | ||
5095 | if (req->Flags == SMB2_CLOSE_FLAG_POSTQUERY_ATTRIB) { | |
5096 | fp = ksmbd_lookup_fd_fast(work, volatile_id); | |
5097 | if (!fp) { | |
5098 | err = -ENOENT; | |
5099 | goto out; | |
5100 | } | |
5101 | ||
5102 | inode = FP_INODE(fp); | |
5103 | rsp->Flags = SMB2_CLOSE_FLAG_POSTQUERY_ATTRIB; | |
5104 | rsp->AllocationSize = S_ISDIR(inode->i_mode) ? 0 : | |
5105 | cpu_to_le64(inode->i_blocks << 9); | |
5106 | rsp->EndOfFile = cpu_to_le64(inode->i_size); | |
5107 | rsp->Attributes = fp->f_ci->m_fattr; | |
5108 | rsp->CreationTime = cpu_to_le64(fp->create_time); | |
5109 | time = ksmbd_UnixTimeToNT(inode->i_atime); | |
5110 | rsp->LastAccessTime = cpu_to_le64(time); | |
5111 | time = ksmbd_UnixTimeToNT(inode->i_mtime); | |
5112 | rsp->LastWriteTime = cpu_to_le64(time); | |
5113 | time = ksmbd_UnixTimeToNT(inode->i_ctime); | |
5114 | rsp->ChangeTime = cpu_to_le64(time); | |
5115 | ksmbd_fd_put(work, fp); | |
5116 | } else { | |
5117 | rsp->Flags = 0; | |
5118 | rsp->AllocationSize = 0; | |
5119 | rsp->EndOfFile = 0; | |
5120 | rsp->Attributes = 0; | |
5121 | rsp->CreationTime = 0; | |
5122 | rsp->LastAccessTime = 0; | |
5123 | rsp->LastWriteTime = 0; | |
5124 | rsp->ChangeTime = 0; | |
5125 | } | |
5126 | ||
5127 | err = ksmbd_close_fd(work, volatile_id); | |
5128 | out: | |
5129 | if (err) { | |
5130 | if (rsp->hdr.Status == 0) | |
5131 | rsp->hdr.Status = STATUS_FILE_CLOSED; | |
5132 | smb2_set_err_rsp(work); | |
5133 | } else { | |
5134 | inc_rfc1001_len(rsp_org, 60); | |
5135 | } | |
5136 | ||
5137 | return 0; | |
5138 | } | |
5139 | ||
5140 | /** | |
5141 | * smb2_echo() - handler for smb2 echo(ping) command | |
5142 | * @work: smb work containing echo request buffer | |
5143 | * | |
5144 | * Return: 0 | |
5145 | */ | |
5146 | int smb2_echo(struct ksmbd_work *work) | |
5147 | { | |
e5066499 | 5148 | struct smb2_echo_rsp *rsp = work->response_buf; |
e2f34481 NJ |
5149 | |
5150 | rsp->StructureSize = cpu_to_le16(4); | |
5151 | rsp->Reserved = 0; | |
5152 | inc_rfc1001_len(rsp, 4); | |
5153 | return 0; | |
5154 | } | |
5155 | ||
e2f34481 | 5156 | static int smb2_rename(struct ksmbd_work *work, struct ksmbd_file *fp, |
070fb21e NJ |
5157 | struct smb2_file_rename_info *file_info, |
5158 | struct nls_table *local_nls) | |
e2f34481 NJ |
5159 | { |
5160 | struct ksmbd_share_config *share = fp->tcon->share_conf; | |
5161 | char *new_name = NULL, *abs_oldname = NULL, *old_name = NULL; | |
5162 | char *pathname = NULL; | |
5163 | struct path path; | |
5164 | bool file_present = true; | |
5165 | int rc; | |
5166 | ||
5167 | ksmbd_debug(SMB, "setting FILE_RENAME_INFO\n"); | |
5168 | pathname = kmalloc(PATH_MAX, GFP_KERNEL); | |
5169 | if (!pathname) | |
5170 | return -ENOMEM; | |
5171 | ||
5172 | abs_oldname = d_path(&fp->filp->f_path, pathname, PATH_MAX); | |
5173 | if (IS_ERR(abs_oldname)) { | |
5174 | rc = -EINVAL; | |
5175 | goto out; | |
5176 | } | |
5177 | old_name = strrchr(abs_oldname, '/'); | |
64b39f4a | 5178 | if (old_name && old_name[1] != '\0') { |
e2f34481 | 5179 | old_name++; |
64b39f4a | 5180 | } else { |
e2f34481 | 5181 | ksmbd_debug(SMB, "can't get last component in path %s\n", |
070fb21e | 5182 | abs_oldname); |
e2f34481 NJ |
5183 | rc = -ENOENT; |
5184 | goto out; | |
5185 | } | |
5186 | ||
5187 | new_name = smb2_get_name(share, | |
5188 | file_info->FileName, | |
5189 | le32_to_cpu(file_info->FileNameLength), | |
5190 | local_nls); | |
5191 | if (IS_ERR(new_name)) { | |
5192 | rc = PTR_ERR(new_name); | |
5193 | goto out; | |
5194 | } | |
5195 | ||
5196 | if (strchr(new_name, ':')) { | |
5197 | int s_type; | |
5198 | char *xattr_stream_name, *stream_name = NULL; | |
5199 | size_t xattr_stream_size; | |
5200 | int len; | |
5201 | ||
5202 | rc = parse_stream_name(new_name, &stream_name, &s_type); | |
5203 | if (rc < 0) | |
5204 | goto out; | |
5205 | ||
5206 | len = strlen(new_name); | |
5207 | if (new_name[len - 1] != '/') { | |
bde1694a | 5208 | pr_err("not allow base filename in rename\n"); |
e2f34481 NJ |
5209 | rc = -ESHARE; |
5210 | goto out; | |
5211 | } | |
5212 | ||
5213 | rc = ksmbd_vfs_xattr_stream_name(stream_name, | |
5214 | &xattr_stream_name, | |
5215 | &xattr_stream_size, | |
5216 | s_type); | |
5217 | if (rc) | |
5218 | goto out; | |
5219 | ||
5220 | rc = ksmbd_vfs_setxattr(fp->filp->f_path.dentry, | |
5221 | xattr_stream_name, | |
5222 | NULL, 0, 0); | |
5223 | if (rc < 0) { | |
bde1694a NJ |
5224 | pr_err("failed to store stream name in xattr: %d\n", |
5225 | rc); | |
e2f34481 NJ |
5226 | rc = -EINVAL; |
5227 | goto out; | |
5228 | } | |
5229 | ||
5230 | goto out; | |
5231 | } | |
5232 | ||
5233 | ksmbd_debug(SMB, "new name %s\n", new_name); | |
5234 | rc = ksmbd_vfs_kern_path(new_name, 0, &path, 1); | |
5235 | if (rc) | |
5236 | file_present = false; | |
5237 | else | |
5238 | path_put(&path); | |
5239 | ||
5240 | if (ksmbd_share_veto_filename(share, new_name)) { | |
5241 | rc = -ENOENT; | |
5242 | ksmbd_debug(SMB, "Can't rename vetoed file: %s\n", new_name); | |
5243 | goto out; | |
5244 | } | |
5245 | ||
5246 | if (file_info->ReplaceIfExists) { | |
5247 | if (file_present) { | |
5248 | rc = ksmbd_vfs_remove_file(work, new_name); | |
5249 | if (rc) { | |
5250 | if (rc != -ENOTEMPTY) | |
5251 | rc = -EINVAL; | |
5252 | ksmbd_debug(SMB, "cannot delete %s, rc %d\n", | |
070fb21e | 5253 | new_name, rc); |
e2f34481 NJ |
5254 | goto out; |
5255 | } | |
5256 | } | |
5257 | } else { | |
5258 | if (file_present && | |
64b39f4a | 5259 | strncmp(old_name, path.dentry->d_name.name, strlen(old_name))) { |
e2f34481 NJ |
5260 | rc = -EEXIST; |
5261 | ksmbd_debug(SMB, | |
070fb21e | 5262 | "cannot rename already existing file\n"); |
e2f34481 NJ |
5263 | goto out; |
5264 | } | |
5265 | } | |
5266 | ||
5267 | rc = ksmbd_vfs_fp_rename(work, fp, new_name); | |
5268 | out: | |
5269 | kfree(pathname); | |
5270 | if (!IS_ERR(new_name)) | |
915f570a | 5271 | kfree(new_name); |
e2f34481 NJ |
5272 | return rc; |
5273 | } | |
5274 | ||
e2f34481 | 5275 | static int smb2_create_link(struct ksmbd_work *work, |
070fb21e NJ |
5276 | struct ksmbd_share_config *share, |
5277 | struct smb2_file_link_info *file_info, | |
5278 | struct file *filp, | |
5279 | struct nls_table *local_nls) | |
e2f34481 NJ |
5280 | { |
5281 | char *link_name = NULL, *target_name = NULL, *pathname = NULL; | |
5282 | struct path path; | |
5283 | bool file_present = true; | |
5284 | int rc; | |
5285 | ||
5286 | ksmbd_debug(SMB, "setting FILE_LINK_INFORMATION\n"); | |
5287 | pathname = kmalloc(PATH_MAX, GFP_KERNEL); | |
5288 | if (!pathname) | |
5289 | return -ENOMEM; | |
5290 | ||
5291 | link_name = smb2_get_name(share, | |
5292 | file_info->FileName, | |
5293 | le32_to_cpu(file_info->FileNameLength), | |
5294 | local_nls); | |
5295 | if (IS_ERR(link_name) || S_ISDIR(file_inode(filp)->i_mode)) { | |
5296 | rc = -EINVAL; | |
5297 | goto out; | |
5298 | } | |
5299 | ||
5300 | ksmbd_debug(SMB, "link name is %s\n", link_name); | |
5301 | target_name = d_path(&filp->f_path, pathname, PATH_MAX); | |
5302 | if (IS_ERR(target_name)) { | |
5303 | rc = -EINVAL; | |
5304 | goto out; | |
5305 | } | |
5306 | ||
5307 | ksmbd_debug(SMB, "target name is %s\n", target_name); | |
5308 | rc = ksmbd_vfs_kern_path(link_name, 0, &path, 0); | |
5309 | if (rc) | |
5310 | file_present = false; | |
5311 | else | |
5312 | path_put(&path); | |
5313 | ||
5314 | if (file_info->ReplaceIfExists) { | |
5315 | if (file_present) { | |
5316 | rc = ksmbd_vfs_remove_file(work, link_name); | |
5317 | if (rc) { | |
5318 | rc = -EINVAL; | |
5319 | ksmbd_debug(SMB, "cannot delete %s\n", | |
070fb21e | 5320 | link_name); |
e2f34481 NJ |
5321 | goto out; |
5322 | } | |
5323 | } | |
5324 | } else { | |
5325 | if (file_present) { | |
5326 | rc = -EEXIST; | |
5327 | ksmbd_debug(SMB, "link already exists\n"); | |
5328 | goto out; | |
5329 | } | |
5330 | } | |
5331 | ||
5332 | rc = ksmbd_vfs_link(work, target_name, link_name); | |
5333 | if (rc) | |
5334 | rc = -EINVAL; | |
5335 | out: | |
5336 | if (!IS_ERR(link_name)) | |
915f570a | 5337 | kfree(link_name); |
e2f34481 NJ |
5338 | kfree(pathname); |
5339 | return rc; | |
5340 | } | |
5341 | ||
64b39f4a | 5342 | static int set_file_basic_info(struct ksmbd_file *fp, char *buf, |
070fb21e | 5343 | struct ksmbd_share_config *share) |
e2f34481 NJ |
5344 | { |
5345 | struct smb2_file_all_info *file_info; | |
5346 | struct iattr attrs; | |
5347 | struct iattr temp_attrs; | |
5348 | struct file *filp; | |
5349 | struct inode *inode; | |
5350 | int rc; | |
5351 | ||
7adfd4f6 | 5352 | if (!(fp->daccess & FILE_WRITE_ATTRIBUTES_LE)) |
e2f34481 NJ |
5353 | return -EACCES; |
5354 | ||
5355 | file_info = (struct smb2_file_all_info *)buf; | |
5356 | attrs.ia_valid = 0; | |
5357 | filp = fp->filp; | |
5358 | inode = file_inode(filp); | |
5359 | ||
5360 | if (file_info->CreationTime) | |
5361 | fp->create_time = le64_to_cpu(file_info->CreationTime); | |
5362 | ||
5363 | if (file_info->LastAccessTime) { | |
5364 | attrs.ia_atime = ksmbd_NTtimeToUnix(file_info->LastAccessTime); | |
5365 | attrs.ia_valid |= (ATTR_ATIME | ATTR_ATIME_SET); | |
5366 | } | |
5367 | ||
5368 | if (file_info->ChangeTime) { | |
5369 | temp_attrs.ia_ctime = ksmbd_NTtimeToUnix(file_info->ChangeTime); | |
5370 | attrs.ia_ctime = temp_attrs.ia_ctime; | |
5371 | attrs.ia_valid |= ATTR_CTIME; | |
64b39f4a | 5372 | } else { |
e2f34481 | 5373 | temp_attrs.ia_ctime = inode->i_ctime; |
64b39f4a | 5374 | } |
e2f34481 NJ |
5375 | |
5376 | if (file_info->LastWriteTime) { | |
5377 | attrs.ia_mtime = ksmbd_NTtimeToUnix(file_info->LastWriteTime); | |
5378 | attrs.ia_valid |= (ATTR_MTIME | ATTR_MTIME_SET); | |
5379 | } | |
5380 | ||
5381 | if (file_info->Attributes) { | |
5382 | if (!S_ISDIR(inode->i_mode) && | |
64b39f4a | 5383 | file_info->Attributes & ATTR_DIRECTORY_LE) { |
bde1694a | 5384 | pr_err("can't change a file to a directory\n"); |
e2f34481 NJ |
5385 | return -EINVAL; |
5386 | } | |
5387 | ||
5388 | if (!(S_ISDIR(inode->i_mode) && file_info->Attributes == ATTR_NORMAL_LE)) | |
5389 | fp->f_ci->m_fattr = file_info->Attributes | | |
5390 | (fp->f_ci->m_fattr & ATTR_DIRECTORY_LE); | |
5391 | } | |
5392 | ||
5393 | if (test_share_config_flag(share, KSMBD_SHARE_FLAG_STORE_DOS_ATTRS) && | |
5394 | (file_info->CreationTime || file_info->Attributes)) { | |
5395 | struct xattr_dos_attrib da = {0}; | |
5396 | ||
5397 | da.version = 4; | |
5398 | da.itime = fp->itime; | |
5399 | da.create_time = fp->create_time; | |
5400 | da.attr = le32_to_cpu(fp->f_ci->m_fattr); | |
5401 | da.flags = XATTR_DOSINFO_ATTRIB | XATTR_DOSINFO_CREATE_TIME | | |
5402 | XATTR_DOSINFO_ITIME; | |
5403 | ||
5404 | rc = ksmbd_vfs_set_dos_attrib_xattr(filp->f_path.dentry, &da); | |
5405 | if (rc) | |
5406 | ksmbd_debug(SMB, | |
070fb21e | 5407 | "failed to restore file attribute in EA\n"); |
e2f34481 NJ |
5408 | rc = 0; |
5409 | } | |
5410 | ||
5411 | /* | |
5412 | * HACK : set ctime here to avoid ctime changed | |
5413 | * when file_info->ChangeTime is zero. | |
5414 | */ | |
5415 | attrs.ia_ctime = temp_attrs.ia_ctime; | |
5416 | attrs.ia_valid |= ATTR_CTIME; | |
5417 | ||
5418 | if (attrs.ia_valid) { | |
5419 | struct dentry *dentry = filp->f_path.dentry; | |
5420 | struct inode *inode = d_inode(dentry); | |
5421 | ||
5422 | if (IS_IMMUTABLE(inode) || IS_APPEND(inode)) | |
5423 | return -EACCES; | |
5424 | ||
5425 | rc = setattr_prepare(&init_user_ns, dentry, &attrs); | |
5426 | if (rc) | |
5427 | return -EINVAL; | |
5428 | ||
5429 | inode_lock(inode); | |
5430 | setattr_copy(&init_user_ns, inode, &attrs); | |
5431 | attrs.ia_valid &= ~ATTR_CTIME; | |
5432 | rc = notify_change(&init_user_ns, dentry, &attrs, NULL); | |
5433 | inode_unlock(inode); | |
5434 | } | |
5435 | return 0; | |
5436 | } | |
5437 | ||
5438 | static int set_file_allocation_info(struct ksmbd_work *work, | |
070fb21e | 5439 | struct ksmbd_file *fp, char *buf) |
e2f34481 NJ |
5440 | { |
5441 | /* | |
5442 | * TODO : It's working fine only when store dos attributes | |
5443 | * is not yes. need to implement a logic which works | |
5444 | * properly with any smb.conf option | |
5445 | */ | |
5446 | ||
5447 | struct smb2_file_alloc_info *file_alloc_info; | |
5448 | loff_t alloc_blks; | |
5449 | struct inode *inode; | |
5450 | int rc; | |
5451 | ||
a299669b | 5452 | if (!(fp->daccess & FILE_WRITE_DATA_LE)) |
e2f34481 NJ |
5453 | return -EACCES; |
5454 | ||
5455 | file_alloc_info = (struct smb2_file_alloc_info *)buf; | |
5456 | alloc_blks = (le64_to_cpu(file_alloc_info->AllocationSize) + 511) >> 9; | |
5457 | inode = file_inode(fp->filp); | |
5458 | ||
5459 | if (alloc_blks > inode->i_blocks) { | |
e8c06191 NJ |
5460 | smb_break_all_levII_oplock(work, fp, 1); |
5461 | rc = vfs_fallocate(fp->filp, FALLOC_FL_KEEP_SIZE, 0, | |
5462 | alloc_blks * 512); | |
e2f34481 | 5463 | if (rc && rc != -EOPNOTSUPP) { |
e8c06191 | 5464 | pr_err("vfs_fallocate is failed : %d\n", rc); |
e2f34481 NJ |
5465 | return rc; |
5466 | } | |
5467 | } else if (alloc_blks < inode->i_blocks) { | |
5468 | loff_t size; | |
5469 | ||
5470 | /* | |
5471 | * Allocation size could be smaller than original one | |
5472 | * which means allocated blocks in file should be | |
5473 | * deallocated. use truncate to cut out it, but inode | |
5474 | * size is also updated with truncate offset. | |
5475 | * inode size is retained by backup inode size. | |
5476 | */ | |
5477 | size = i_size_read(inode); | |
5478 | rc = ksmbd_vfs_truncate(work, NULL, fp, alloc_blks * 512); | |
5479 | if (rc) { | |
bde1694a NJ |
5480 | pr_err("truncate failed! filename : %s, err %d\n", |
5481 | fp->filename, rc); | |
e2f34481 NJ |
5482 | return rc; |
5483 | } | |
5484 | if (size < alloc_blks * 512) | |
5485 | i_size_write(inode, size); | |
5486 | } | |
5487 | return 0; | |
5488 | } | |
5489 | ||
64b39f4a | 5490 | static int set_end_of_file_info(struct ksmbd_work *work, struct ksmbd_file *fp, |
070fb21e | 5491 | char *buf) |
e2f34481 NJ |
5492 | { |
5493 | struct smb2_file_eof_info *file_eof_info; | |
5494 | loff_t newsize; | |
5495 | struct inode *inode; | |
5496 | int rc; | |
5497 | ||
a299669b | 5498 | if (!(fp->daccess & FILE_WRITE_DATA_LE)) |
e2f34481 NJ |
5499 | return -EACCES; |
5500 | ||
5501 | file_eof_info = (struct smb2_file_eof_info *)buf; | |
5502 | newsize = le64_to_cpu(file_eof_info->EndOfFile); | |
5503 | inode = file_inode(fp->filp); | |
5504 | ||
5505 | /* | |
5506 | * If FILE_END_OF_FILE_INFORMATION of set_info_file is called | |
5507 | * on FAT32 shared device, truncate execution time is too long | |
5508 | * and network error could cause from windows client. because | |
5509 | * truncate of some filesystem like FAT32 fill zero data in | |
5510 | * truncated range. | |
5511 | */ | |
5512 | if (inode->i_sb->s_magic != MSDOS_SUPER_MAGIC) { | |
5513 | ksmbd_debug(SMB, "filename : %s truncated to newsize %lld\n", | |
070fb21e | 5514 | fp->filename, newsize); |
e2f34481 NJ |
5515 | rc = ksmbd_vfs_truncate(work, NULL, fp, newsize); |
5516 | if (rc) { | |
64b39f4a | 5517 | ksmbd_debug(SMB, "truncate failed! filename : %s err %d\n", |
070fb21e | 5518 | fp->filename, rc); |
e2f34481 NJ |
5519 | if (rc != -EAGAIN) |
5520 | rc = -EBADF; | |
5521 | return rc; | |
5522 | } | |
5523 | } | |
5524 | return 0; | |
5525 | } | |
5526 | ||
64b39f4a | 5527 | static int set_rename_info(struct ksmbd_work *work, struct ksmbd_file *fp, |
070fb21e | 5528 | char *buf) |
e2f34481 NJ |
5529 | { |
5530 | struct ksmbd_file *parent_fp; | |
5531 | ||
5532 | if (!(fp->daccess & FILE_DELETE_LE)) { | |
bde1694a | 5533 | pr_err("no right to delete : 0x%x\n", fp->daccess); |
e2f34481 NJ |
5534 | return -EACCES; |
5535 | } | |
5536 | ||
5537 | if (ksmbd_stream_fd(fp)) | |
5538 | goto next; | |
5539 | ||
5540 | parent_fp = ksmbd_lookup_fd_inode(PARENT_INODE(fp)); | |
5541 | if (parent_fp) { | |
5542 | if (parent_fp->daccess & FILE_DELETE_LE) { | |
bde1694a | 5543 | pr_err("parent dir is opened with delete access\n"); |
e2f34481 NJ |
5544 | return -ESHARE; |
5545 | } | |
5546 | } | |
5547 | next: | |
5548 | return smb2_rename(work, fp, | |
5549 | (struct smb2_file_rename_info *)buf, | |
5550 | work->sess->conn->local_nls); | |
5551 | } | |
5552 | ||
64b39f4a | 5553 | static int set_file_disposition_info(struct ksmbd_file *fp, char *buf) |
e2f34481 NJ |
5554 | { |
5555 | struct smb2_file_disposition_info *file_info; | |
5556 | struct inode *inode; | |
5557 | ||
5558 | if (!(fp->daccess & FILE_DELETE_LE)) { | |
bde1694a | 5559 | pr_err("no right to delete : 0x%x\n", fp->daccess); |
e2f34481 NJ |
5560 | return -EACCES; |
5561 | } | |
5562 | ||
5563 | inode = file_inode(fp->filp); | |
5564 | file_info = (struct smb2_file_disposition_info *)buf; | |
5565 | if (file_info->DeletePending) { | |
5566 | if (S_ISDIR(inode->i_mode) && | |
64b39f4a | 5567 | ksmbd_vfs_empty_dir(fp) == -ENOTEMPTY) |
e2f34481 NJ |
5568 | return -EBUSY; |
5569 | ksmbd_set_inode_pending_delete(fp); | |
5570 | } else { | |
5571 | ksmbd_clear_inode_pending_delete(fp); | |
5572 | } | |
5573 | return 0; | |
5574 | } | |
5575 | ||
64b39f4a | 5576 | static int set_file_position_info(struct ksmbd_file *fp, char *buf) |
e2f34481 NJ |
5577 | { |
5578 | struct smb2_file_pos_info *file_info; | |
5579 | loff_t current_byte_offset; | |
ee81cae1 | 5580 | unsigned long sector_size; |
e2f34481 NJ |
5581 | struct inode *inode; |
5582 | ||
5583 | inode = file_inode(fp->filp); | |
5584 | file_info = (struct smb2_file_pos_info *)buf; | |
5585 | current_byte_offset = le64_to_cpu(file_info->CurrentByteOffset); | |
ee81cae1 | 5586 | sector_size = inode->i_sb->s_blocksize; |
e2f34481 NJ |
5587 | |
5588 | if (current_byte_offset < 0 || | |
64b39f4a NJ |
5589 | (fp->coption == FILE_NO_INTERMEDIATE_BUFFERING_LE && |
5590 | current_byte_offset & (sector_size - 1))) { | |
bde1694a NJ |
5591 | pr_err("CurrentByteOffset is not valid : %llu\n", |
5592 | current_byte_offset); | |
e2f34481 NJ |
5593 | return -EINVAL; |
5594 | } | |
5595 | ||
5596 | fp->filp->f_pos = current_byte_offset; | |
5597 | return 0; | |
5598 | } | |
5599 | ||
64b39f4a | 5600 | static int set_file_mode_info(struct ksmbd_file *fp, char *buf) |
e2f34481 NJ |
5601 | { |
5602 | struct smb2_file_mode_info *file_info; | |
5603 | __le32 mode; | |
5604 | ||
5605 | file_info = (struct smb2_file_mode_info *)buf; | |
5606 | mode = file_info->Mode; | |
5607 | ||
64b39f4a NJ |
5608 | if ((mode & ~FILE_MODE_INFO_MASK) || |
5609 | (mode & FILE_SYNCHRONOUS_IO_ALERT_LE && | |
5610 | mode & FILE_SYNCHRONOUS_IO_NONALERT_LE)) { | |
bde1694a | 5611 | pr_err("Mode is not valid : 0x%x\n", le32_to_cpu(mode)); |
e2f34481 NJ |
5612 | return -EINVAL; |
5613 | } | |
5614 | ||
5615 | /* | |
5616 | * TODO : need to implement consideration for | |
5617 | * FILE_SYNCHRONOUS_IO_ALERT and FILE_SYNCHRONOUS_IO_NONALERT | |
5618 | */ | |
5619 | ksmbd_vfs_set_fadvise(fp->filp, mode); | |
5620 | fp->coption = mode; | |
5621 | return 0; | |
5622 | } | |
5623 | ||
5624 | /** | |
5625 | * smb2_set_info_file() - handler for smb2 set info command | |
5626 | * @work: smb work containing set info command buffer | |
95fa1ce9 HL |
5627 | * @fp: ksmbd_file pointer |
5628 | * @info_class: smb2 set info class | |
5629 | * @share: ksmbd_share_config pointer | |
e2f34481 NJ |
5630 | * |
5631 | * Return: 0 on success, otherwise error | |
5632 | * TODO: need to implement an error handling for STATUS_INFO_LENGTH_MISMATCH | |
5633 | */ | |
64b39f4a | 5634 | static int smb2_set_info_file(struct ksmbd_work *work, struct ksmbd_file *fp, |
070fb21e NJ |
5635 | int info_class, char *buf, |
5636 | struct ksmbd_share_config *share) | |
e2f34481 NJ |
5637 | { |
5638 | switch (info_class) { | |
5639 | case FILE_BASIC_INFORMATION: | |
5640 | return set_file_basic_info(fp, buf, share); | |
5641 | ||
5642 | case FILE_ALLOCATION_INFORMATION: | |
5643 | return set_file_allocation_info(work, fp, buf); | |
5644 | ||
5645 | case FILE_END_OF_FILE_INFORMATION: | |
5646 | return set_end_of_file_info(work, fp, buf); | |
5647 | ||
5648 | case FILE_RENAME_INFORMATION: | |
64b39f4a | 5649 | if (!test_tree_conn_flag(work->tcon, KSMBD_TREE_CONN_FLAG_WRITABLE)) { |
e2f34481 | 5650 | ksmbd_debug(SMB, |
070fb21e | 5651 | "User does not have write permission\n"); |
e2f34481 NJ |
5652 | return -EACCES; |
5653 | } | |
5654 | return set_rename_info(work, fp, buf); | |
5655 | ||
5656 | case FILE_LINK_INFORMATION: | |
5657 | return smb2_create_link(work, work->tcon->share_conf, | |
070fb21e NJ |
5658 | (struct smb2_file_link_info *)buf, fp->filp, |
5659 | work->sess->conn->local_nls); | |
e2f34481 NJ |
5660 | |
5661 | case FILE_DISPOSITION_INFORMATION: | |
64b39f4a | 5662 | if (!test_tree_conn_flag(work->tcon, KSMBD_TREE_CONN_FLAG_WRITABLE)) { |
e2f34481 | 5663 | ksmbd_debug(SMB, |
070fb21e | 5664 | "User does not have write permission\n"); |
e2f34481 NJ |
5665 | return -EACCES; |
5666 | } | |
5667 | return set_file_disposition_info(fp, buf); | |
5668 | ||
5669 | case FILE_FULL_EA_INFORMATION: | |
5670 | { | |
5671 | if (!(fp->daccess & FILE_WRITE_EA_LE)) { | |
bde1694a NJ |
5672 | pr_err("Not permitted to write ext attr: 0x%x\n", |
5673 | fp->daccess); | |
e2f34481 NJ |
5674 | return -EACCES; |
5675 | } | |
5676 | ||
5677 | return smb2_set_ea((struct smb2_ea_info *)buf, | |
5678 | &fp->filp->f_path); | |
5679 | } | |
5680 | ||
5681 | case FILE_POSITION_INFORMATION: | |
5682 | return set_file_position_info(fp, buf); | |
5683 | ||
5684 | case FILE_MODE_INFORMATION: | |
5685 | return set_file_mode_info(fp, buf); | |
5686 | } | |
5687 | ||
bde1694a | 5688 | pr_err("Unimplemented Fileinfoclass :%d\n", info_class); |
e2f34481 NJ |
5689 | return -EOPNOTSUPP; |
5690 | } | |
5691 | ||
64b39f4a | 5692 | static int smb2_set_info_sec(struct ksmbd_file *fp, int addition_info, |
070fb21e | 5693 | char *buffer, int buf_len) |
e2f34481 NJ |
5694 | { |
5695 | struct smb_ntsd *pntsd = (struct smb_ntsd *)buffer; | |
5696 | ||
5697 | fp->saccess |= FILE_SHARE_DELETE_LE; | |
5698 | ||
5699 | return set_info_sec(fp->conn, fp->tcon, fp->filp->f_path.dentry, pntsd, | |
5700 | buf_len, false); | |
5701 | } | |
5702 | ||
5703 | /** | |
5704 | * smb2_set_info() - handler for smb2 set info command handler | |
5705 | * @work: smb work containing set info request buffer | |
5706 | * | |
5707 | * Return: 0 on success, otherwise error | |
5708 | */ | |
5709 | int smb2_set_info(struct ksmbd_work *work) | |
5710 | { | |
5711 | struct smb2_set_info_req *req; | |
5712 | struct smb2_set_info_rsp *rsp, *rsp_org; | |
5713 | struct ksmbd_file *fp; | |
5714 | int rc = 0; | |
5715 | unsigned int id = KSMBD_NO_FID, pid = KSMBD_NO_FID; | |
5716 | ||
5717 | ksmbd_debug(SMB, "Received set info request\n"); | |
5718 | ||
e5066499 | 5719 | rsp_org = work->response_buf; |
e2f34481 NJ |
5720 | if (work->next_smb2_rcv_hdr_off) { |
5721 | req = REQUEST_BUF_NEXT(work); | |
5722 | rsp = RESPONSE_BUF_NEXT(work); | |
5723 | if (!HAS_FILE_ID(le64_to_cpu(req->VolatileFileId))) { | |
5724 | ksmbd_debug(SMB, "Compound request set FID = %u\n", | |
070fb21e | 5725 | work->compound_fid); |
e2f34481 NJ |
5726 | id = work->compound_fid; |
5727 | pid = work->compound_pfid; | |
5728 | } | |
5729 | } else { | |
e5066499 NJ |
5730 | req = work->request_buf; |
5731 | rsp = work->response_buf; | |
e2f34481 NJ |
5732 | } |
5733 | ||
5734 | if (!HAS_FILE_ID(id)) { | |
5735 | id = le64_to_cpu(req->VolatileFileId); | |
5736 | pid = le64_to_cpu(req->PersistentFileId); | |
5737 | } | |
5738 | ||
5739 | fp = ksmbd_lookup_fd_slow(work, id, pid); | |
5740 | if (!fp) { | |
5741 | ksmbd_debug(SMB, "Invalid id for close: %u\n", id); | |
5742 | rc = -ENOENT; | |
5743 | goto err_out; | |
5744 | } | |
5745 | ||
5746 | switch (req->InfoType) { | |
5747 | case SMB2_O_INFO_FILE: | |
5748 | ksmbd_debug(SMB, "GOT SMB2_O_INFO_FILE\n"); | |
5749 | rc = smb2_set_info_file(work, fp, req->FileInfoClass, | |
5750 | req->Buffer, work->tcon->share_conf); | |
5751 | break; | |
5752 | case SMB2_O_INFO_SECURITY: | |
5753 | ksmbd_debug(SMB, "GOT SMB2_O_INFO_SECURITY\n"); | |
5754 | rc = smb2_set_info_sec(fp, | |
070fb21e NJ |
5755 | le32_to_cpu(req->AdditionalInformation), |
5756 | req->Buffer, | |
5757 | le32_to_cpu(req->BufferLength)); | |
e2f34481 NJ |
5758 | break; |
5759 | default: | |
5760 | rc = -EOPNOTSUPP; | |
5761 | } | |
5762 | ||
5763 | if (rc < 0) | |
5764 | goto err_out; | |
5765 | ||
5766 | rsp->StructureSize = cpu_to_le16(2); | |
5767 | inc_rfc1001_len(rsp_org, 2); | |
5768 | ksmbd_fd_put(work, fp); | |
5769 | return 0; | |
5770 | ||
5771 | err_out: | |
5772 | if (rc == -EACCES || rc == -EPERM) | |
5773 | rsp->hdr.Status = STATUS_ACCESS_DENIED; | |
5774 | else if (rc == -EINVAL) | |
5775 | rsp->hdr.Status = STATUS_INVALID_PARAMETER; | |
5776 | else if (rc == -ESHARE) | |
5777 | rsp->hdr.Status = STATUS_SHARING_VIOLATION; | |
5778 | else if (rc == -ENOENT) | |
5779 | rsp->hdr.Status = STATUS_OBJECT_NAME_INVALID; | |
5780 | else if (rc == -EBUSY || rc == -ENOTEMPTY) | |
5781 | rsp->hdr.Status = STATUS_DIRECTORY_NOT_EMPTY; | |
5782 | else if (rc == -EAGAIN) | |
5783 | rsp->hdr.Status = STATUS_FILE_LOCK_CONFLICT; | |
ff1d5727 | 5784 | else if (rc == -EBADF || rc == -ESTALE) |
e2f34481 NJ |
5785 | rsp->hdr.Status = STATUS_INVALID_HANDLE; |
5786 | else if (rc == -EEXIST) | |
5787 | rsp->hdr.Status = STATUS_OBJECT_NAME_COLLISION; | |
5788 | else if (rsp->hdr.Status == 0 || rc == -EOPNOTSUPP) | |
5789 | rsp->hdr.Status = STATUS_INVALID_INFO_CLASS; | |
5790 | smb2_set_err_rsp(work); | |
5791 | ksmbd_fd_put(work, fp); | |
070fb21e | 5792 | ksmbd_debug(SMB, "error while processing smb2 query rc = %d\n", rc); |
e2f34481 NJ |
5793 | return rc; |
5794 | } | |
5795 | ||
5796 | /** | |
5797 | * smb2_read_pipe() - handler for smb2 read from IPC pipe | |
5798 | * @work: smb work containing read IPC pipe command buffer | |
5799 | * | |
5800 | * Return: 0 on success, otherwise error | |
5801 | */ | |
5802 | static noinline int smb2_read_pipe(struct ksmbd_work *work) | |
5803 | { | |
5804 | int nbytes = 0, err; | |
64b39f4a | 5805 | u64 id; |
e2f34481 | 5806 | struct ksmbd_rpc_command *rpc_resp; |
e5066499 NJ |
5807 | struct smb2_read_req *req = work->request_buf; |
5808 | struct smb2_read_rsp *rsp = work->response_buf; | |
e2f34481 NJ |
5809 | |
5810 | id = le64_to_cpu(req->VolatileFileId); | |
5811 | ||
5812 | inc_rfc1001_len(rsp, 16); | |
5813 | rpc_resp = ksmbd_rpc_read(work->sess, id); | |
5814 | if (rpc_resp) { | |
5815 | if (rpc_resp->flags != KSMBD_RPC_OK) { | |
5816 | err = -EINVAL; | |
5817 | goto out; | |
5818 | } | |
5819 | ||
5820 | work->aux_payload_buf = | |
79f6b11a | 5821 | kvmalloc(rpc_resp->payload_sz, GFP_KERNEL | __GFP_ZERO); |
e2f34481 NJ |
5822 | if (!work->aux_payload_buf) { |
5823 | err = -ENOMEM; | |
5824 | goto out; | |
5825 | } | |
5826 | ||
5827 | memcpy(work->aux_payload_buf, rpc_resp->payload, | |
070fb21e | 5828 | rpc_resp->payload_sz); |
e2f34481 NJ |
5829 | |
5830 | nbytes = rpc_resp->payload_sz; | |
5831 | work->resp_hdr_sz = get_rfc1002_len(rsp) + 4; | |
5832 | work->aux_payload_sz = nbytes; | |
79f6b11a | 5833 | kvfree(rpc_resp); |
e2f34481 NJ |
5834 | } |
5835 | ||
5836 | rsp->StructureSize = cpu_to_le16(17); | |
5837 | rsp->DataOffset = 80; | |
5838 | rsp->Reserved = 0; | |
5839 | rsp->DataLength = cpu_to_le32(nbytes); | |
5840 | rsp->DataRemaining = 0; | |
5841 | rsp->Reserved2 = 0; | |
5842 | inc_rfc1001_len(rsp, nbytes); | |
5843 | return 0; | |
5844 | ||
5845 | out: | |
5846 | rsp->hdr.Status = STATUS_UNEXPECTED_IO_ERROR; | |
5847 | smb2_set_err_rsp(work); | |
79f6b11a | 5848 | kvfree(rpc_resp); |
e2f34481 NJ |
5849 | return err; |
5850 | } | |
5851 | ||
5852 | static ssize_t smb2_read_rdma_channel(struct ksmbd_work *work, | |
070fb21e NJ |
5853 | struct smb2_read_req *req, void *data_buf, |
5854 | size_t length) | |
e2f34481 NJ |
5855 | { |
5856 | struct smb2_buffer_desc_v1 *desc = | |
5857 | (struct smb2_buffer_desc_v1 *)&req->Buffer[0]; | |
5858 | int err; | |
5859 | ||
64b39f4a NJ |
5860 | if (work->conn->dialect == SMB30_PROT_ID && |
5861 | req->Channel != SMB2_CHANNEL_RDMA_V1) | |
e2f34481 NJ |
5862 | return -EINVAL; |
5863 | ||
64b39f4a NJ |
5864 | if (req->ReadChannelInfoOffset == 0 || |
5865 | le16_to_cpu(req->ReadChannelInfoLength) < sizeof(*desc)) | |
e2f34481 NJ |
5866 | return -EINVAL; |
5867 | ||
5868 | work->need_invalidate_rkey = | |
5869 | (req->Channel == SMB2_CHANNEL_RDMA_V1_INVALIDATE); | |
5870 | work->remote_key = le32_to_cpu(desc->token); | |
5871 | ||
64b39f4a | 5872 | err = ksmbd_conn_rdma_write(work->conn, data_buf, length, |
070fb21e NJ |
5873 | le32_to_cpu(desc->token), |
5874 | le64_to_cpu(desc->offset), | |
5875 | le32_to_cpu(desc->length)); | |
e2f34481 NJ |
5876 | if (err) |
5877 | return err; | |
5878 | ||
5879 | return length; | |
5880 | } | |
5881 | ||
5882 | /** | |
5883 | * smb2_read() - handler for smb2 read from file | |
5884 | * @work: smb work containing read command buffer | |
5885 | * | |
5886 | * Return: 0 on success, otherwise error | |
5887 | */ | |
5888 | int smb2_read(struct ksmbd_work *work) | |
5889 | { | |
5890 | struct ksmbd_conn *conn = work->conn; | |
5891 | struct smb2_read_req *req; | |
5892 | struct smb2_read_rsp *rsp, *rsp_org; | |
5893 | struct ksmbd_file *fp; | |
5894 | loff_t offset; | |
5895 | size_t length, mincount; | |
5896 | ssize_t nbytes = 0, remain_bytes = 0; | |
5897 | int err = 0; | |
5898 | ||
e5066499 | 5899 | rsp_org = work->response_buf; |
e2f34481 NJ |
5900 | WORK_BUFFERS(work, req, rsp); |
5901 | ||
5902 | if (test_share_config_flag(work->tcon->share_conf, | |
5903 | KSMBD_SHARE_FLAG_PIPE)) { | |
5904 | ksmbd_debug(SMB, "IPC pipe read request\n"); | |
5905 | return smb2_read_pipe(work); | |
5906 | } | |
5907 | ||
070fb21e NJ |
5908 | fp = ksmbd_lookup_fd_slow(work, le64_to_cpu(req->VolatileFileId), |
5909 | le64_to_cpu(req->PersistentFileId)); | |
e2f34481 | 5910 | if (!fp) { |
a4382db9 MM |
5911 | err = -ENOENT; |
5912 | goto out; | |
e2f34481 NJ |
5913 | } |
5914 | ||
5915 | if (!(fp->daccess & (FILE_READ_DATA_LE | FILE_READ_ATTRIBUTES_LE))) { | |
bde1694a | 5916 | pr_err("Not permitted to read : 0x%x\n", fp->daccess); |
e2f34481 NJ |
5917 | err = -EACCES; |
5918 | goto out; | |
5919 | } | |
5920 | ||
5921 | offset = le64_to_cpu(req->Offset); | |
5922 | length = le32_to_cpu(req->Length); | |
5923 | mincount = le32_to_cpu(req->MinimumCount); | |
5924 | ||
5925 | if (length > conn->vals->max_read_size) { | |
5926 | ksmbd_debug(SMB, "limiting read size to max size(%u)\n", | |
5927 | conn->vals->max_read_size); | |
5928 | err = -EINVAL; | |
5929 | goto out; | |
5930 | } | |
5931 | ||
5932 | ksmbd_debug(SMB, "filename %s, offset %lld, len %zu\n", FP_FILENAME(fp), | |
070fb21e | 5933 | offset, length); |
e2f34481 | 5934 | |
c30f4eb8 | 5935 | work->aux_payload_buf = kvmalloc(length, GFP_KERNEL | __GFP_ZERO); |
e2f34481 | 5936 | if (!work->aux_payload_buf) { |
c1ea111f | 5937 | err = -ENOMEM; |
e2f34481 NJ |
5938 | goto out; |
5939 | } | |
5940 | ||
5941 | nbytes = ksmbd_vfs_read(work, fp, length, &offset); | |
5942 | if (nbytes < 0) { | |
5943 | err = nbytes; | |
5944 | goto out; | |
5945 | } | |
5946 | ||
5947 | if ((nbytes == 0 && length != 0) || nbytes < mincount) { | |
c30f4eb8 | 5948 | kvfree(work->aux_payload_buf); |
e5066499 | 5949 | work->aux_payload_buf = NULL; |
e2f34481 NJ |
5950 | rsp->hdr.Status = STATUS_END_OF_FILE; |
5951 | smb2_set_err_rsp(work); | |
5952 | ksmbd_fd_put(work, fp); | |
5953 | return 0; | |
5954 | } | |
5955 | ||
5956 | ksmbd_debug(SMB, "nbytes %zu, offset %lld mincount %zu\n", | |
070fb21e | 5957 | nbytes, offset, mincount); |
e2f34481 NJ |
5958 | |
5959 | if (req->Channel == SMB2_CHANNEL_RDMA_V1_INVALIDATE || | |
64b39f4a | 5960 | req->Channel == SMB2_CHANNEL_RDMA_V1) { |
e2f34481 NJ |
5961 | /* write data to the client using rdma channel */ |
5962 | remain_bytes = smb2_read_rdma_channel(work, req, | |
070fb21e NJ |
5963 | work->aux_payload_buf, |
5964 | nbytes); | |
c30f4eb8 | 5965 | kvfree(work->aux_payload_buf); |
e5066499 | 5966 | work->aux_payload_buf = NULL; |
e2f34481 NJ |
5967 | |
5968 | nbytes = 0; | |
5969 | if (remain_bytes < 0) { | |
5970 | err = (int)remain_bytes; | |
5971 | goto out; | |
5972 | } | |
5973 | } | |
5974 | ||
5975 | rsp->StructureSize = cpu_to_le16(17); | |
5976 | rsp->DataOffset = 80; | |
5977 | rsp->Reserved = 0; | |
5978 | rsp->DataLength = cpu_to_le32(nbytes); | |
5979 | rsp->DataRemaining = cpu_to_le32(remain_bytes); | |
5980 | rsp->Reserved2 = 0; | |
5981 | inc_rfc1001_len(rsp_org, 16); | |
5982 | work->resp_hdr_sz = get_rfc1002_len(rsp_org) + 4; | |
5983 | work->aux_payload_sz = nbytes; | |
5984 | inc_rfc1001_len(rsp_org, nbytes); | |
5985 | ksmbd_fd_put(work, fp); | |
5986 | return 0; | |
5987 | ||
5988 | out: | |
5989 | if (err) { | |
5990 | if (err == -EISDIR) | |
5991 | rsp->hdr.Status = STATUS_INVALID_DEVICE_REQUEST; | |
5992 | else if (err == -EAGAIN) | |
5993 | rsp->hdr.Status = STATUS_FILE_LOCK_CONFLICT; | |
5994 | else if (err == -ENOENT) | |
5995 | rsp->hdr.Status = STATUS_FILE_CLOSED; | |
5996 | else if (err == -EACCES) | |
5997 | rsp->hdr.Status = STATUS_ACCESS_DENIED; | |
5998 | else if (err == -ESHARE) | |
5999 | rsp->hdr.Status = STATUS_SHARING_VIOLATION; | |
6000 | else if (err == -EINVAL) | |
6001 | rsp->hdr.Status = STATUS_INVALID_PARAMETER; | |
6002 | else | |
6003 | rsp->hdr.Status = STATUS_INVALID_HANDLE; | |
6004 | ||
6005 | smb2_set_err_rsp(work); | |
6006 | } | |
6007 | ksmbd_fd_put(work, fp); | |
6008 | return err; | |
6009 | } | |
6010 | ||
6011 | /** | |
6012 | * smb2_write_pipe() - handler for smb2 write on IPC pipe | |
6013 | * @work: smb work containing write IPC pipe command buffer | |
6014 | * | |
6015 | * Return: 0 on success, otherwise error | |
6016 | */ | |
6017 | static noinline int smb2_write_pipe(struct ksmbd_work *work) | |
6018 | { | |
e5066499 NJ |
6019 | struct smb2_write_req *req = work->request_buf; |
6020 | struct smb2_write_rsp *rsp = work->response_buf; | |
e2f34481 | 6021 | struct ksmbd_rpc_command *rpc_resp; |
64b39f4a | 6022 | u64 id = 0; |
e2f34481 NJ |
6023 | int err = 0, ret = 0; |
6024 | char *data_buf; | |
6025 | size_t length; | |
6026 | ||
6027 | length = le32_to_cpu(req->Length); | |
6028 | id = le64_to_cpu(req->VolatileFileId); | |
6029 | ||
6030 | if (le16_to_cpu(req->DataOffset) == | |
64b39f4a | 6031 | (offsetof(struct smb2_write_req, Buffer) - 4)) { |
e2f34481 NJ |
6032 | data_buf = (char *)&req->Buffer[0]; |
6033 | } else { | |
6034 | if ((le16_to_cpu(req->DataOffset) > get_rfc1002_len(req)) || | |
64b39f4a | 6035 | (le16_to_cpu(req->DataOffset) + length > get_rfc1002_len(req))) { |
bde1694a NJ |
6036 | pr_err("invalid write data offset %u, smb_len %u\n", |
6037 | le16_to_cpu(req->DataOffset), | |
6038 | get_rfc1002_len(req)); | |
e2f34481 NJ |
6039 | err = -EINVAL; |
6040 | goto out; | |
6041 | } | |
6042 | ||
6043 | data_buf = (char *)(((char *)&req->hdr.ProtocolId) + | |
6044 | le16_to_cpu(req->DataOffset)); | |
6045 | } | |
6046 | ||
6047 | rpc_resp = ksmbd_rpc_write(work->sess, id, data_buf, length); | |
6048 | if (rpc_resp) { | |
6049 | if (rpc_resp->flags == KSMBD_RPC_ENOTIMPLEMENTED) { | |
6050 | rsp->hdr.Status = STATUS_NOT_SUPPORTED; | |
79f6b11a | 6051 | kvfree(rpc_resp); |
e2f34481 NJ |
6052 | smb2_set_err_rsp(work); |
6053 | return -EOPNOTSUPP; | |
6054 | } | |
6055 | if (rpc_resp->flags != KSMBD_RPC_OK) { | |
6056 | rsp->hdr.Status = STATUS_INVALID_HANDLE; | |
6057 | smb2_set_err_rsp(work); | |
79f6b11a | 6058 | kvfree(rpc_resp); |
e2f34481 NJ |
6059 | return ret; |
6060 | } | |
79f6b11a | 6061 | kvfree(rpc_resp); |
e2f34481 NJ |
6062 | } |
6063 | ||
6064 | rsp->StructureSize = cpu_to_le16(17); | |
6065 | rsp->DataOffset = 0; | |
6066 | rsp->Reserved = 0; | |
6067 | rsp->DataLength = cpu_to_le32(length); | |
6068 | rsp->DataRemaining = 0; | |
6069 | rsp->Reserved2 = 0; | |
6070 | inc_rfc1001_len(rsp, 16); | |
6071 | return 0; | |
6072 | out: | |
6073 | if (err) { | |
6074 | rsp->hdr.Status = STATUS_INVALID_HANDLE; | |
6075 | smb2_set_err_rsp(work); | |
6076 | } | |
6077 | ||
6078 | return err; | |
6079 | } | |
6080 | ||
6081 | static ssize_t smb2_write_rdma_channel(struct ksmbd_work *work, | |
070fb21e NJ |
6082 | struct smb2_write_req *req, |
6083 | struct ksmbd_file *fp, | |
6084 | loff_t offset, size_t length, bool sync) | |
e2f34481 NJ |
6085 | { |
6086 | struct smb2_buffer_desc_v1 *desc; | |
6087 | char *data_buf; | |
6088 | int ret; | |
6089 | ssize_t nbytes; | |
6090 | ||
6091 | desc = (struct smb2_buffer_desc_v1 *)&req->Buffer[0]; | |
6092 | ||
6093 | if (work->conn->dialect == SMB30_PROT_ID && | |
64b39f4a | 6094 | req->Channel != SMB2_CHANNEL_RDMA_V1) |
e2f34481 NJ |
6095 | return -EINVAL; |
6096 | ||
6097 | if (req->Length != 0 || req->DataOffset != 0) | |
6098 | return -EINVAL; | |
6099 | ||
64b39f4a NJ |
6100 | if (req->WriteChannelInfoOffset == 0 || |
6101 | le16_to_cpu(req->WriteChannelInfoLength) < sizeof(*desc)) | |
e2f34481 NJ |
6102 | return -EINVAL; |
6103 | ||
6104 | work->need_invalidate_rkey = | |
6105 | (req->Channel == SMB2_CHANNEL_RDMA_V1_INVALIDATE); | |
6106 | work->remote_key = le32_to_cpu(desc->token); | |
6107 | ||
79f6b11a | 6108 | data_buf = kvmalloc(length, GFP_KERNEL | __GFP_ZERO); |
e2f34481 NJ |
6109 | if (!data_buf) |
6110 | return -ENOMEM; | |
6111 | ||
6112 | ret = ksmbd_conn_rdma_read(work->conn, data_buf, length, | |
070fb21e NJ |
6113 | le32_to_cpu(desc->token), |
6114 | le64_to_cpu(desc->offset), | |
6115 | le32_to_cpu(desc->length)); | |
e2f34481 | 6116 | if (ret < 0) { |
79f6b11a | 6117 | kvfree(data_buf); |
e2f34481 NJ |
6118 | return ret; |
6119 | } | |
6120 | ||
64b39f4a | 6121 | ret = ksmbd_vfs_write(work, fp, data_buf, length, &offset, sync, &nbytes); |
79f6b11a | 6122 | kvfree(data_buf); |
e2f34481 NJ |
6123 | if (ret < 0) |
6124 | return ret; | |
6125 | ||
6126 | return nbytes; | |
6127 | } | |
6128 | ||
6129 | /** | |
6130 | * smb2_write() - handler for smb2 write from file | |
6131 | * @work: smb work containing write command buffer | |
6132 | * | |
6133 | * Return: 0 on success, otherwise error | |
6134 | */ | |
6135 | int smb2_write(struct ksmbd_work *work) | |
6136 | { | |
6137 | struct smb2_write_req *req; | |
6138 | struct smb2_write_rsp *rsp, *rsp_org; | |
bcd62a36 | 6139 | struct ksmbd_file *fp = NULL; |
e2f34481 NJ |
6140 | loff_t offset; |
6141 | size_t length; | |
6142 | ssize_t nbytes; | |
6143 | char *data_buf; | |
6144 | bool writethrough = false; | |
6145 | int err = 0; | |
6146 | ||
e5066499 | 6147 | rsp_org = work->response_buf; |
e2f34481 NJ |
6148 | WORK_BUFFERS(work, req, rsp); |
6149 | ||
64b39f4a | 6150 | if (test_share_config_flag(work->tcon->share_conf, KSMBD_SHARE_FLAG_PIPE)) { |
e2f34481 NJ |
6151 | ksmbd_debug(SMB, "IPC pipe write request\n"); |
6152 | return smb2_write_pipe(work); | |
6153 | } | |
6154 | ||
6155 | if (!test_tree_conn_flag(work->tcon, KSMBD_TREE_CONN_FLAG_WRITABLE)) { | |
6156 | ksmbd_debug(SMB, "User does not have write permission\n"); | |
6157 | err = -EACCES; | |
6158 | goto out; | |
6159 | } | |
6160 | ||
64b39f4a | 6161 | fp = ksmbd_lookup_fd_slow(work, le64_to_cpu(req->VolatileFileId), |
070fb21e | 6162 | le64_to_cpu(req->PersistentFileId)); |
e2f34481 | 6163 | if (!fp) { |
a4382db9 MM |
6164 | err = -ENOENT; |
6165 | goto out; | |
e2f34481 NJ |
6166 | } |
6167 | ||
6168 | if (!(fp->daccess & (FILE_WRITE_DATA_LE | FILE_READ_ATTRIBUTES_LE))) { | |
bde1694a | 6169 | pr_err("Not permitted to write : 0x%x\n", fp->daccess); |
e2f34481 NJ |
6170 | err = -EACCES; |
6171 | goto out; | |
6172 | } | |
6173 | ||
6174 | offset = le64_to_cpu(req->Offset); | |
6175 | length = le32_to_cpu(req->Length); | |
6176 | ||
6177 | if (length > work->conn->vals->max_write_size) { | |
6178 | ksmbd_debug(SMB, "limiting write size to max size(%u)\n", | |
6179 | work->conn->vals->max_write_size); | |
6180 | err = -EINVAL; | |
6181 | goto out; | |
6182 | } | |
6183 | ||
6184 | if (le32_to_cpu(req->Flags) & SMB2_WRITEFLAG_WRITE_THROUGH) | |
6185 | writethrough = true; | |
6186 | ||
6187 | if (req->Channel != SMB2_CHANNEL_RDMA_V1 && | |
64b39f4a | 6188 | req->Channel != SMB2_CHANNEL_RDMA_V1_INVALIDATE) { |
e2f34481 | 6189 | if (le16_to_cpu(req->DataOffset) == |
070fb21e | 6190 | (offsetof(struct smb2_write_req, Buffer) - 4)) { |
e2f34481 NJ |
6191 | data_buf = (char *)&req->Buffer[0]; |
6192 | } else { | |
64b39f4a NJ |
6193 | if ((le16_to_cpu(req->DataOffset) > get_rfc1002_len(req)) || |
6194 | (le16_to_cpu(req->DataOffset) + length > get_rfc1002_len(req))) { | |
bde1694a NJ |
6195 | pr_err("invalid write data offset %u, smb_len %u\n", |
6196 | le16_to_cpu(req->DataOffset), | |
6197 | get_rfc1002_len(req)); | |
e2f34481 NJ |
6198 | err = -EINVAL; |
6199 | goto out; | |
6200 | } | |
6201 | ||
6202 | data_buf = (char *)(((char *)&req->hdr.ProtocolId) + | |
6203 | le16_to_cpu(req->DataOffset)); | |
6204 | } | |
6205 | ||
6206 | ksmbd_debug(SMB, "flags %u\n", le32_to_cpu(req->Flags)); | |
6207 | if (le32_to_cpu(req->Flags) & SMB2_WRITEFLAG_WRITE_THROUGH) | |
6208 | writethrough = true; | |
6209 | ||
6210 | ksmbd_debug(SMB, "filename %s, offset %lld, len %zu\n", | |
070fb21e | 6211 | FP_FILENAME(fp), offset, length); |
e2f34481 NJ |
6212 | err = ksmbd_vfs_write(work, fp, data_buf, length, &offset, |
6213 | writethrough, &nbytes); | |
6214 | if (err < 0) | |
6215 | goto out; | |
6216 | } else { | |
6217 | /* read data from the client using rdma channel, and | |
6218 | * write the data. | |
6219 | */ | |
6220 | nbytes = smb2_write_rdma_channel(work, req, fp, offset, | |
070fb21e NJ |
6221 | le32_to_cpu(req->RemainingBytes), |
6222 | writethrough); | |
e2f34481 NJ |
6223 | if (nbytes < 0) { |
6224 | err = (int)nbytes; | |
6225 | goto out; | |
6226 | } | |
6227 | } | |
6228 | ||
6229 | rsp->StructureSize = cpu_to_le16(17); | |
6230 | rsp->DataOffset = 0; | |
6231 | rsp->Reserved = 0; | |
6232 | rsp->DataLength = cpu_to_le32(nbytes); | |
6233 | rsp->DataRemaining = 0; | |
6234 | rsp->Reserved2 = 0; | |
6235 | inc_rfc1001_len(rsp_org, 16); | |
6236 | ksmbd_fd_put(work, fp); | |
6237 | return 0; | |
6238 | ||
6239 | out: | |
6240 | if (err == -EAGAIN) | |
6241 | rsp->hdr.Status = STATUS_FILE_LOCK_CONFLICT; | |
6242 | else if (err == -ENOSPC || err == -EFBIG) | |
6243 | rsp->hdr.Status = STATUS_DISK_FULL; | |
6244 | else if (err == -ENOENT) | |
6245 | rsp->hdr.Status = STATUS_FILE_CLOSED; | |
6246 | else if (err == -EACCES) | |
6247 | rsp->hdr.Status = STATUS_ACCESS_DENIED; | |
6248 | else if (err == -ESHARE) | |
6249 | rsp->hdr.Status = STATUS_SHARING_VIOLATION; | |
6250 | else if (err == -EINVAL) | |
6251 | rsp->hdr.Status = STATUS_INVALID_PARAMETER; | |
6252 | else | |
6253 | rsp->hdr.Status = STATUS_INVALID_HANDLE; | |
6254 | ||
6255 | smb2_set_err_rsp(work); | |
6256 | ksmbd_fd_put(work, fp); | |
6257 | return err; | |
6258 | } | |
6259 | ||
6260 | /** | |
6261 | * smb2_flush() - handler for smb2 flush file - fsync | |
6262 | * @work: smb work containing flush command buffer | |
6263 | * | |
6264 | * Return: 0 on success, otherwise error | |
6265 | */ | |
6266 | int smb2_flush(struct ksmbd_work *work) | |
6267 | { | |
6268 | struct smb2_flush_req *req; | |
6269 | struct smb2_flush_rsp *rsp, *rsp_org; | |
6270 | int err; | |
6271 | ||
e5066499 | 6272 | rsp_org = work->response_buf; |
e2f34481 NJ |
6273 | WORK_BUFFERS(work, req, rsp); |
6274 | ||
6275 | ksmbd_debug(SMB, "SMB2_FLUSH called for fid %llu\n", | |
070fb21e | 6276 | le64_to_cpu(req->VolatileFileId)); |
e2f34481 NJ |
6277 | |
6278 | err = ksmbd_vfs_fsync(work, | |
6279 | le64_to_cpu(req->VolatileFileId), | |
6280 | le64_to_cpu(req->PersistentFileId)); | |
6281 | if (err) | |
6282 | goto out; | |
6283 | ||
6284 | rsp->StructureSize = cpu_to_le16(4); | |
6285 | rsp->Reserved = 0; | |
6286 | inc_rfc1001_len(rsp_org, 4); | |
6287 | return 0; | |
6288 | ||
6289 | out: | |
6290 | if (err) { | |
6291 | rsp->hdr.Status = STATUS_INVALID_HANDLE; | |
6292 | smb2_set_err_rsp(work); | |
6293 | } | |
6294 | ||
6295 | return err; | |
6296 | } | |
6297 | ||
6298 | /** | |
6299 | * smb2_cancel() - handler for smb2 cancel command | |
6300 | * @work: smb work containing cancel command buffer | |
6301 | * | |
6302 | * Return: 0 on success, otherwise error | |
6303 | */ | |
6304 | int smb2_cancel(struct ksmbd_work *work) | |
6305 | { | |
6306 | struct ksmbd_conn *conn = work->conn; | |
e5066499 | 6307 | struct smb2_hdr *hdr = work->request_buf; |
e2f34481 NJ |
6308 | struct smb2_hdr *chdr; |
6309 | struct ksmbd_work *cancel_work = NULL; | |
e2f34481 NJ |
6310 | int canceled = 0; |
6311 | struct list_head *command_list; | |
6312 | ||
6313 | ksmbd_debug(SMB, "smb2 cancel called on mid %llu, async flags 0x%x\n", | |
070fb21e | 6314 | hdr->MessageId, hdr->Flags); |
e2f34481 NJ |
6315 | |
6316 | if (hdr->Flags & SMB2_FLAGS_ASYNC_COMMAND) { | |
6317 | command_list = &conn->async_requests; | |
6318 | ||
6319 | spin_lock(&conn->request_lock); | |
6f3d5eee NJ |
6320 | list_for_each_entry(cancel_work, command_list, |
6321 | async_request_entry) { | |
e5066499 | 6322 | chdr = cancel_work->request_buf; |
e2f34481 NJ |
6323 | |
6324 | if (cancel_work->async_id != | |
64b39f4a | 6325 | le64_to_cpu(hdr->Id.AsyncId)) |
e2f34481 NJ |
6326 | continue; |
6327 | ||
6328 | ksmbd_debug(SMB, | |
070fb21e NJ |
6329 | "smb2 with AsyncId %llu cancelled command = 0x%x\n", |
6330 | le64_to_cpu(hdr->Id.AsyncId), | |
6331 | le16_to_cpu(chdr->Command)); | |
e2f34481 NJ |
6332 | canceled = 1; |
6333 | break; | |
6334 | } | |
6335 | spin_unlock(&conn->request_lock); | |
6336 | } else { | |
6337 | command_list = &conn->requests; | |
6338 | ||
6339 | spin_lock(&conn->request_lock); | |
6f3d5eee | 6340 | list_for_each_entry(cancel_work, command_list, request_entry) { |
e5066499 | 6341 | chdr = cancel_work->request_buf; |
e2f34481 NJ |
6342 | |
6343 | if (chdr->MessageId != hdr->MessageId || | |
64b39f4a | 6344 | cancel_work == work) |
e2f34481 NJ |
6345 | continue; |
6346 | ||
6347 | ksmbd_debug(SMB, | |
070fb21e NJ |
6348 | "smb2 with mid %llu cancelled command = 0x%x\n", |
6349 | le64_to_cpu(hdr->MessageId), | |
6350 | le16_to_cpu(chdr->Command)); | |
e2f34481 NJ |
6351 | canceled = 1; |
6352 | break; | |
6353 | } | |
6354 | spin_unlock(&conn->request_lock); | |
6355 | } | |
6356 | ||
6357 | if (canceled) { | |
6358 | cancel_work->state = KSMBD_WORK_CANCELLED; | |
6359 | if (cancel_work->cancel_fn) | |
6360 | cancel_work->cancel_fn(cancel_work->cancel_argv); | |
6361 | } | |
6362 | ||
6363 | /* For SMB2_CANCEL command itself send no response*/ | |
6364 | work->send_no_response = 1; | |
6365 | return 0; | |
6366 | } | |
6367 | ||
6368 | struct file_lock *smb_flock_init(struct file *f) | |
6369 | { | |
6370 | struct file_lock *fl; | |
6371 | ||
6372 | fl = locks_alloc_lock(); | |
6373 | if (!fl) | |
6374 | goto out; | |
6375 | ||
6376 | locks_init_lock(fl); | |
6377 | ||
6378 | fl->fl_owner = f; | |
6379 | fl->fl_pid = current->tgid; | |
6380 | fl->fl_file = f; | |
6381 | fl->fl_flags = FL_POSIX; | |
6382 | fl->fl_ops = NULL; | |
6383 | fl->fl_lmops = NULL; | |
6384 | ||
6385 | out: | |
6386 | return fl; | |
6387 | } | |
6388 | ||
6389 | static int smb2_set_flock_flags(struct file_lock *flock, int flags) | |
6390 | { | |
6391 | int cmd = -EINVAL; | |
6392 | ||
6393 | /* Checking for wrong flag combination during lock request*/ | |
6394 | switch (flags) { | |
6395 | case SMB2_LOCKFLAG_SHARED: | |
6396 | ksmbd_debug(SMB, "received shared request\n"); | |
6397 | cmd = F_SETLKW; | |
6398 | flock->fl_type = F_RDLCK; | |
6399 | flock->fl_flags |= FL_SLEEP; | |
6400 | break; | |
6401 | case SMB2_LOCKFLAG_EXCLUSIVE: | |
6402 | ksmbd_debug(SMB, "received exclusive request\n"); | |
6403 | cmd = F_SETLKW; | |
6404 | flock->fl_type = F_WRLCK; | |
6405 | flock->fl_flags |= FL_SLEEP; | |
6406 | break; | |
64b39f4a | 6407 | case SMB2_LOCKFLAG_SHARED | SMB2_LOCKFLAG_FAIL_IMMEDIATELY: |
e2f34481 | 6408 | ksmbd_debug(SMB, |
070fb21e | 6409 | "received shared & fail immediately request\n"); |
e2f34481 NJ |
6410 | cmd = F_SETLK; |
6411 | flock->fl_type = F_RDLCK; | |
6412 | break; | |
64b39f4a | 6413 | case SMB2_LOCKFLAG_EXCLUSIVE | SMB2_LOCKFLAG_FAIL_IMMEDIATELY: |
e2f34481 | 6414 | ksmbd_debug(SMB, |
070fb21e | 6415 | "received exclusive & fail immediately request\n"); |
e2f34481 NJ |
6416 | cmd = F_SETLK; |
6417 | flock->fl_type = F_WRLCK; | |
6418 | break; | |
6419 | case SMB2_LOCKFLAG_UNLOCK: | |
6420 | ksmbd_debug(SMB, "received unlock request\n"); | |
6421 | flock->fl_type = F_UNLCK; | |
6422 | cmd = 0; | |
6423 | break; | |
6424 | } | |
6425 | ||
6426 | return cmd; | |
6427 | } | |
6428 | ||
6429 | static struct ksmbd_lock *smb2_lock_init(struct file_lock *flock, | |
070fb21e NJ |
6430 | unsigned int cmd, int flags, |
6431 | struct list_head *lock_list) | |
e2f34481 NJ |
6432 | { |
6433 | struct ksmbd_lock *lock; | |
6434 | ||
6435 | lock = kzalloc(sizeof(struct ksmbd_lock), GFP_KERNEL); | |
6436 | if (!lock) | |
6437 | return NULL; | |
6438 | ||
6439 | lock->cmd = cmd; | |
6440 | lock->fl = flock; | |
6441 | lock->start = flock->fl_start; | |
6442 | lock->end = flock->fl_end; | |
6443 | lock->flags = flags; | |
6444 | if (lock->start == lock->end) | |
6445 | lock->zero_len = 1; | |
6446 | INIT_LIST_HEAD(&lock->llist); | |
6447 | INIT_LIST_HEAD(&lock->glist); | |
6448 | list_add_tail(&lock->llist, lock_list); | |
6449 | ||
6450 | return lock; | |
6451 | } | |
6452 | ||
6453 | static void smb2_remove_blocked_lock(void **argv) | |
6454 | { | |
6455 | struct file_lock *flock = (struct file_lock *)argv[0]; | |
6456 | ||
6457 | ksmbd_vfs_posix_lock_unblock(flock); | |
6458 | wake_up(&flock->fl_wait); | |
6459 | } | |
6460 | ||
6461 | static inline bool lock_defer_pending(struct file_lock *fl) | |
6462 | { | |
6463 | /* check pending lock waiters */ | |
6464 | return waitqueue_active(&fl->fl_wait); | |
6465 | } | |
6466 | ||
6467 | /** | |
6468 | * smb2_lock() - handler for smb2 file lock command | |
6469 | * @work: smb work containing lock command buffer | |
6470 | * | |
6471 | * Return: 0 on success, otherwise error | |
6472 | */ | |
6473 | int smb2_lock(struct ksmbd_work *work) | |
6474 | { | |
e5066499 NJ |
6475 | struct smb2_lock_req *req = work->request_buf; |
6476 | struct smb2_lock_rsp *rsp = work->response_buf; | |
e2f34481 NJ |
6477 | struct smb2_lock_element *lock_ele; |
6478 | struct ksmbd_file *fp = NULL; | |
6479 | struct file_lock *flock = NULL; | |
6480 | struct file *filp = NULL; | |
6481 | int lock_count; | |
6482 | int flags = 0; | |
6483 | int cmd = 0; | |
6484 | int err = 0, i; | |
50bf80a5 | 6485 | u64 lock_start, lock_length; |
e2f34481 NJ |
6486 | struct ksmbd_lock *smb_lock = NULL, *cmp_lock, *tmp; |
6487 | int nolock = 0; | |
6488 | LIST_HEAD(lock_list); | |
6489 | LIST_HEAD(rollback_list); | |
6490 | int prior_lock = 0; | |
6491 | ||
6492 | ksmbd_debug(SMB, "Received lock request\n"); | |
6493 | fp = ksmbd_lookup_fd_slow(work, | |
070fb21e NJ |
6494 | le64_to_cpu(req->VolatileFileId), |
6495 | le64_to_cpu(req->PersistentFileId)); | |
e2f34481 NJ |
6496 | if (!fp) { |
6497 | ksmbd_debug(SMB, "Invalid file id for lock : %llu\n", | |
070fb21e | 6498 | le64_to_cpu(req->VolatileFileId)); |
e2f34481 NJ |
6499 | rsp->hdr.Status = STATUS_FILE_CLOSED; |
6500 | goto out2; | |
6501 | } | |
6502 | ||
6503 | filp = fp->filp; | |
6504 | lock_count = le16_to_cpu(req->LockCount); | |
6505 | lock_ele = req->locks; | |
6506 | ||
6507 | ksmbd_debug(SMB, "lock count is %d\n", lock_count); | |
070fb21e | 6508 | if (!lock_count) { |
e2f34481 NJ |
6509 | rsp->hdr.Status = STATUS_INVALID_PARAMETER; |
6510 | goto out2; | |
6511 | } | |
6512 | ||
6513 | for (i = 0; i < lock_count; i++) { | |
6514 | flags = le32_to_cpu(lock_ele[i].Flags); | |
6515 | ||
6516 | flock = smb_flock_init(filp); | |
6517 | if (!flock) { | |
6518 | rsp->hdr.Status = STATUS_LOCK_NOT_GRANTED; | |
6519 | goto out; | |
6520 | } | |
6521 | ||
6522 | cmd = smb2_set_flock_flags(flock, flags); | |
6523 | ||
50bf80a5 NJ |
6524 | lock_start = le64_to_cpu(lock_ele[i].Offset); |
6525 | lock_length = le64_to_cpu(lock_ele[i].Length); | |
6526 | if (lock_start > U64_MAX - lock_length) { | |
bde1694a | 6527 | pr_err("Invalid lock range requested\n"); |
e2f34481 NJ |
6528 | rsp->hdr.Status = STATUS_INVALID_LOCK_RANGE; |
6529 | goto out; | |
6530 | } | |
6531 | ||
50bf80a5 NJ |
6532 | if (lock_start > OFFSET_MAX) |
6533 | flock->fl_start = OFFSET_MAX; | |
6534 | else | |
6535 | flock->fl_start = lock_start; | |
6536 | ||
e2f34481 | 6537 | lock_length = le64_to_cpu(lock_ele[i].Length); |
50bf80a5 NJ |
6538 | if (lock_length > OFFSET_MAX - flock->fl_start) |
6539 | lock_length = OFFSET_MAX - flock->fl_start; | |
e2f34481 NJ |
6540 | |
6541 | flock->fl_end = flock->fl_start + lock_length; | |
6542 | ||
6543 | if (flock->fl_end < flock->fl_start) { | |
6544 | ksmbd_debug(SMB, | |
070fb21e NJ |
6545 | "the end offset(%llx) is smaller than the start offset(%llx)\n", |
6546 | flock->fl_end, flock->fl_start); | |
e2f34481 NJ |
6547 | rsp->hdr.Status = STATUS_INVALID_LOCK_RANGE; |
6548 | goto out; | |
6549 | } | |
6550 | ||
6551 | /* Check conflict locks in one request */ | |
6552 | list_for_each_entry(cmp_lock, &lock_list, llist) { | |
6553 | if (cmp_lock->fl->fl_start <= flock->fl_start && | |
64b39f4a | 6554 | cmp_lock->fl->fl_end >= flock->fl_end) { |
e2f34481 | 6555 | if (cmp_lock->fl->fl_type != F_UNLCK && |
64b39f4a | 6556 | flock->fl_type != F_UNLCK) { |
bde1694a | 6557 | pr_err("conflict two locks in one request\n"); |
e2f34481 NJ |
6558 | rsp->hdr.Status = |
6559 | STATUS_INVALID_PARAMETER; | |
6560 | goto out; | |
6561 | } | |
6562 | } | |
6563 | } | |
6564 | ||
6565 | smb_lock = smb2_lock_init(flock, cmd, flags, &lock_list); | |
6566 | if (!smb_lock) { | |
6567 | rsp->hdr.Status = STATUS_INVALID_PARAMETER; | |
6568 | goto out; | |
6569 | } | |
6570 | } | |
6571 | ||
6572 | list_for_each_entry_safe(smb_lock, tmp, &lock_list, llist) { | |
6573 | if (smb_lock->cmd < 0) { | |
6574 | rsp->hdr.Status = STATUS_INVALID_PARAMETER; | |
6575 | goto out; | |
6576 | } | |
6577 | ||
6578 | if (!(smb_lock->flags & SMB2_LOCKFLAG_MASK)) { | |
6579 | rsp->hdr.Status = STATUS_INVALID_PARAMETER; | |
6580 | goto out; | |
6581 | } | |
6582 | ||
64b39f4a NJ |
6583 | if ((prior_lock & (SMB2_LOCKFLAG_EXCLUSIVE | SMB2_LOCKFLAG_SHARED) && |
6584 | smb_lock->flags & SMB2_LOCKFLAG_UNLOCK) || | |
6585 | (prior_lock == SMB2_LOCKFLAG_UNLOCK && | |
6586 | !(smb_lock->flags & SMB2_LOCKFLAG_UNLOCK))) { | |
e2f34481 NJ |
6587 | rsp->hdr.Status = STATUS_INVALID_PARAMETER; |
6588 | goto out; | |
6589 | } | |
6590 | ||
6591 | prior_lock = smb_lock->flags; | |
6592 | ||
6593 | if (!(smb_lock->flags & SMB2_LOCKFLAG_UNLOCK) && | |
64b39f4a | 6594 | !(smb_lock->flags & SMB2_LOCKFLAG_FAIL_IMMEDIATELY)) |
e2f34481 NJ |
6595 | goto no_check_gl; |
6596 | ||
6597 | nolock = 1; | |
6598 | /* check locks in global list */ | |
6599 | list_for_each_entry(cmp_lock, &global_lock_list, glist) { | |
6600 | if (file_inode(cmp_lock->fl->fl_file) != | |
64b39f4a | 6601 | file_inode(smb_lock->fl->fl_file)) |
e2f34481 NJ |
6602 | continue; |
6603 | ||
6604 | if (smb_lock->fl->fl_type == F_UNLCK) { | |
64b39f4a NJ |
6605 | if (cmp_lock->fl->fl_file == smb_lock->fl->fl_file && |
6606 | cmp_lock->start == smb_lock->start && | |
6607 | cmp_lock->end == smb_lock->end && | |
6608 | !lock_defer_pending(cmp_lock->fl)) { | |
e2f34481 NJ |
6609 | nolock = 0; |
6610 | locks_free_lock(cmp_lock->fl); | |
6611 | list_del(&cmp_lock->glist); | |
6612 | kfree(cmp_lock); | |
6613 | break; | |
6614 | } | |
6615 | continue; | |
6616 | } | |
6617 | ||
6618 | if (cmp_lock->fl->fl_file == smb_lock->fl->fl_file) { | |
6619 | if (smb_lock->flags & SMB2_LOCKFLAG_SHARED) | |
6620 | continue; | |
6621 | } else { | |
6622 | if (cmp_lock->flags & SMB2_LOCKFLAG_SHARED) | |
6623 | continue; | |
6624 | } | |
6625 | ||
6626 | /* check zero byte lock range */ | |
6627 | if (cmp_lock->zero_len && !smb_lock->zero_len && | |
64b39f4a NJ |
6628 | cmp_lock->start > smb_lock->start && |
6629 | cmp_lock->start < smb_lock->end) { | |
bde1694a | 6630 | pr_err("previous lock conflict with zero byte lock range\n"); |
e2f34481 NJ |
6631 | rsp->hdr.Status = STATUS_LOCK_NOT_GRANTED; |
6632 | goto out; | |
6633 | } | |
6634 | ||
6635 | if (smb_lock->zero_len && !cmp_lock->zero_len && | |
64b39f4a NJ |
6636 | smb_lock->start > cmp_lock->start && |
6637 | smb_lock->start < cmp_lock->end) { | |
bde1694a | 6638 | pr_err("current lock conflict with zero byte lock range\n"); |
e2f34481 NJ |
6639 | rsp->hdr.Status = STATUS_LOCK_NOT_GRANTED; |
6640 | goto out; | |
6641 | } | |
6642 | ||
6643 | if (((cmp_lock->start <= smb_lock->start && | |
64b39f4a NJ |
6644 | cmp_lock->end > smb_lock->start) || |
6645 | (cmp_lock->start < smb_lock->end && cmp_lock->end >= smb_lock->end)) && | |
6646 | !cmp_lock->zero_len && !smb_lock->zero_len) { | |
bde1694a | 6647 | pr_err("Not allow lock operation on exclusive lock range\n"); |
e2f34481 NJ |
6648 | rsp->hdr.Status = |
6649 | STATUS_LOCK_NOT_GRANTED; | |
6650 | goto out; | |
6651 | } | |
6652 | } | |
6653 | ||
6654 | if (smb_lock->fl->fl_type == F_UNLCK && nolock) { | |
bde1694a | 6655 | pr_err("Try to unlock nolocked range\n"); |
e2f34481 NJ |
6656 | rsp->hdr.Status = STATUS_RANGE_NOT_LOCKED; |
6657 | goto out; | |
6658 | } | |
6659 | ||
6660 | no_check_gl: | |
6661 | if (smb_lock->zero_len) { | |
6662 | err = 0; | |
6663 | goto skip; | |
6664 | } | |
6665 | ||
6666 | flock = smb_lock->fl; | |
6667 | list_del(&smb_lock->llist); | |
6668 | retry: | |
e8c06191 | 6669 | err = vfs_lock_file(filp, smb_lock->cmd, flock, NULL); |
e2f34481 NJ |
6670 | skip: |
6671 | if (flags & SMB2_LOCKFLAG_UNLOCK) { | |
64b39f4a | 6672 | if (!err) { |
e2f34481 | 6673 | ksmbd_debug(SMB, "File unlocked\n"); |
64b39f4a | 6674 | } else if (err == -ENOENT) { |
e2f34481 NJ |
6675 | rsp->hdr.Status = STATUS_NOT_LOCKED; |
6676 | goto out; | |
6677 | } | |
6678 | locks_free_lock(flock); | |
6679 | kfree(smb_lock); | |
6680 | } else { | |
6681 | if (err == FILE_LOCK_DEFERRED) { | |
6682 | void **argv; | |
6683 | ||
6684 | ksmbd_debug(SMB, | |
070fb21e | 6685 | "would have to wait for getting lock\n"); |
e2f34481 | 6686 | list_add_tail(&smb_lock->glist, |
070fb21e | 6687 | &global_lock_list); |
e2f34481 NJ |
6688 | list_add(&smb_lock->llist, &rollback_list); |
6689 | ||
6690 | argv = kmalloc(sizeof(void *), GFP_KERNEL); | |
6691 | if (!argv) { | |
6692 | err = -ENOMEM; | |
6693 | goto out; | |
6694 | } | |
6695 | argv[0] = flock; | |
6696 | ||
6697 | err = setup_async_work(work, | |
070fb21e NJ |
6698 | smb2_remove_blocked_lock, |
6699 | argv); | |
e2f34481 NJ |
6700 | if (err) { |
6701 | rsp->hdr.Status = | |
6702 | STATUS_INSUFFICIENT_RESOURCES; | |
6703 | goto out; | |
6704 | } | |
6705 | spin_lock(&fp->f_lock); | |
6706 | list_add(&work->fp_entry, &fp->blocked_works); | |
6707 | spin_unlock(&fp->f_lock); | |
6708 | ||
6709 | smb2_send_interim_resp(work, STATUS_PENDING); | |
6710 | ||
6711 | err = ksmbd_vfs_posix_lock_wait(flock); | |
6712 | ||
6713 | if (!WORK_ACTIVE(work)) { | |
6714 | list_del(&smb_lock->llist); | |
6715 | list_del(&smb_lock->glist); | |
6716 | locks_free_lock(flock); | |
6717 | ||
6718 | if (WORK_CANCELLED(work)) { | |
6719 | spin_lock(&fp->f_lock); | |
6720 | list_del(&work->fp_entry); | |
6721 | spin_unlock(&fp->f_lock); | |
6722 | rsp->hdr.Status = | |
6723 | STATUS_CANCELLED; | |
6724 | kfree(smb_lock); | |
6725 | smb2_send_interim_resp(work, | |
070fb21e | 6726 | STATUS_CANCELLED); |
e2f34481 NJ |
6727 | work->send_no_response = 1; |
6728 | goto out; | |
6729 | } | |
6730 | init_smb2_rsp_hdr(work); | |
6731 | smb2_set_err_rsp(work); | |
6732 | rsp->hdr.Status = | |
6733 | STATUS_RANGE_NOT_LOCKED; | |
6734 | kfree(smb_lock); | |
6735 | goto out2; | |
6736 | } | |
6737 | ||
6738 | list_del(&smb_lock->llist); | |
6739 | list_del(&smb_lock->glist); | |
6740 | spin_lock(&fp->f_lock); | |
6741 | list_del(&work->fp_entry); | |
6742 | spin_unlock(&fp->f_lock); | |
6743 | goto retry; | |
6744 | } else if (!err) { | |
6745 | list_add_tail(&smb_lock->glist, | |
070fb21e | 6746 | &global_lock_list); |
e2f34481 NJ |
6747 | list_add(&smb_lock->llist, &rollback_list); |
6748 | ksmbd_debug(SMB, "successful in taking lock\n"); | |
6749 | } else { | |
6750 | rsp->hdr.Status = STATUS_LOCK_NOT_GRANTED; | |
6751 | goto out; | |
6752 | } | |
6753 | } | |
6754 | } | |
6755 | ||
6756 | if (atomic_read(&fp->f_ci->op_count) > 1) | |
6757 | smb_break_all_oplock(work, fp); | |
6758 | ||
6759 | rsp->StructureSize = cpu_to_le16(4); | |
6760 | ksmbd_debug(SMB, "successful in taking lock\n"); | |
6761 | rsp->hdr.Status = STATUS_SUCCESS; | |
6762 | rsp->Reserved = 0; | |
6763 | inc_rfc1001_len(rsp, 4); | |
6764 | ksmbd_fd_put(work, fp); | |
6765 | return err; | |
6766 | ||
6767 | out: | |
6768 | list_for_each_entry_safe(smb_lock, tmp, &lock_list, llist) { | |
6769 | locks_free_lock(smb_lock->fl); | |
6770 | list_del(&smb_lock->llist); | |
6771 | kfree(smb_lock); | |
6772 | } | |
6773 | ||
6774 | list_for_each_entry_safe(smb_lock, tmp, &rollback_list, llist) { | |
6775 | struct file_lock *rlock = NULL; | |
6776 | ||
6777 | rlock = smb_flock_init(filp); | |
6778 | rlock->fl_type = F_UNLCK; | |
6779 | rlock->fl_start = smb_lock->start; | |
6780 | rlock->fl_end = smb_lock->end; | |
6781 | ||
e8c06191 | 6782 | err = vfs_lock_file(filp, 0, rlock, NULL); |
e2f34481 | 6783 | if (err) |
bde1694a | 6784 | pr_err("rollback unlock fail : %d\n", err); |
e2f34481 NJ |
6785 | list_del(&smb_lock->llist); |
6786 | list_del(&smb_lock->glist); | |
6787 | locks_free_lock(smb_lock->fl); | |
6788 | locks_free_lock(rlock); | |
6789 | kfree(smb_lock); | |
6790 | } | |
6791 | out2: | |
6792 | ksmbd_debug(SMB, "failed in taking lock(flags : %x)\n", flags); | |
6793 | smb2_set_err_rsp(work); | |
6794 | ksmbd_fd_put(work, fp); | |
6795 | return 0; | |
6796 | } | |
6797 | ||
64b39f4a | 6798 | static int fsctl_copychunk(struct ksmbd_work *work, struct smb2_ioctl_req *req, |
070fb21e | 6799 | struct smb2_ioctl_rsp *rsp) |
e2f34481 NJ |
6800 | { |
6801 | struct copychunk_ioctl_req *ci_req; | |
6802 | struct copychunk_ioctl_rsp *ci_rsp; | |
6803 | struct ksmbd_file *src_fp = NULL, *dst_fp = NULL; | |
6804 | struct srv_copychunk *chunks; | |
6805 | unsigned int i, chunk_count, chunk_count_written = 0; | |
6806 | unsigned int chunk_size_written = 0; | |
6807 | loff_t total_size_written = 0; | |
6808 | int ret, cnt_code; | |
6809 | ||
6810 | cnt_code = le32_to_cpu(req->CntCode); | |
6811 | ci_req = (struct copychunk_ioctl_req *)&req->Buffer[0]; | |
6812 | ci_rsp = (struct copychunk_ioctl_rsp *)&rsp->Buffer[0]; | |
6813 | ||
6814 | rsp->VolatileFileId = req->VolatileFileId; | |
6815 | rsp->PersistentFileId = req->PersistentFileId; | |
64b39f4a NJ |
6816 | ci_rsp->ChunksWritten = |
6817 | cpu_to_le32(ksmbd_server_side_copy_max_chunk_count()); | |
6818 | ci_rsp->ChunkBytesWritten = | |
6819 | cpu_to_le32(ksmbd_server_side_copy_max_chunk_size()); | |
6820 | ci_rsp->TotalBytesWritten = | |
6821 | cpu_to_le32(ksmbd_server_side_copy_max_total_size()); | |
e2f34481 NJ |
6822 | |
6823 | chunks = (struct srv_copychunk *)&ci_req->Chunks[0]; | |
6824 | chunk_count = le32_to_cpu(ci_req->ChunkCount); | |
6825 | total_size_written = 0; | |
6826 | ||
6827 | /* verify the SRV_COPYCHUNK_COPY packet */ | |
6828 | if (chunk_count > ksmbd_server_side_copy_max_chunk_count() || | |
64b39f4a NJ |
6829 | le32_to_cpu(req->InputCount) < |
6830 | offsetof(struct copychunk_ioctl_req, Chunks) + | |
6831 | chunk_count * sizeof(struct srv_copychunk)) { | |
e2f34481 NJ |
6832 | rsp->hdr.Status = STATUS_INVALID_PARAMETER; |
6833 | return -EINVAL; | |
6834 | } | |
6835 | ||
6836 | for (i = 0; i < chunk_count; i++) { | |
6837 | if (le32_to_cpu(chunks[i].Length) == 0 || | |
64b39f4a | 6838 | le32_to_cpu(chunks[i].Length) > ksmbd_server_side_copy_max_chunk_size()) |
e2f34481 NJ |
6839 | break; |
6840 | total_size_written += le32_to_cpu(chunks[i].Length); | |
6841 | } | |
64b39f4a NJ |
6842 | |
6843 | if (i < chunk_count || | |
6844 | total_size_written > ksmbd_server_side_copy_max_total_size()) { | |
e2f34481 NJ |
6845 | rsp->hdr.Status = STATUS_INVALID_PARAMETER; |
6846 | return -EINVAL; | |
6847 | } | |
6848 | ||
6849 | src_fp = ksmbd_lookup_foreign_fd(work, | |
070fb21e | 6850 | le64_to_cpu(ci_req->ResumeKey[0])); |
e2f34481 | 6851 | dst_fp = ksmbd_lookup_fd_slow(work, |
070fb21e NJ |
6852 | le64_to_cpu(req->VolatileFileId), |
6853 | le64_to_cpu(req->PersistentFileId)); | |
e2f34481 | 6854 | ret = -EINVAL; |
64b39f4a NJ |
6855 | if (!src_fp || |
6856 | src_fp->persistent_id != le64_to_cpu(ci_req->ResumeKey[1])) { | |
e2f34481 NJ |
6857 | rsp->hdr.Status = STATUS_OBJECT_NAME_NOT_FOUND; |
6858 | goto out; | |
6859 | } | |
64b39f4a | 6860 | |
e2f34481 NJ |
6861 | if (!dst_fp) { |
6862 | rsp->hdr.Status = STATUS_FILE_CLOSED; | |
6863 | goto out; | |
6864 | } | |
6865 | ||
6866 | /* | |
6867 | * FILE_READ_DATA should only be included in | |
6868 | * the FSCTL_COPYCHUNK case | |
6869 | */ | |
070fb21e NJ |
6870 | if (cnt_code == FSCTL_COPYCHUNK && |
6871 | !(dst_fp->daccess & (FILE_READ_DATA_LE | FILE_GENERIC_READ_LE))) { | |
e2f34481 NJ |
6872 | rsp->hdr.Status = STATUS_ACCESS_DENIED; |
6873 | goto out; | |
6874 | } | |
6875 | ||
6876 | ret = ksmbd_vfs_copy_file_ranges(work, src_fp, dst_fp, | |
070fb21e NJ |
6877 | chunks, chunk_count, |
6878 | &chunk_count_written, | |
6879 | &chunk_size_written, | |
6880 | &total_size_written); | |
e2f34481 NJ |
6881 | if (ret < 0) { |
6882 | if (ret == -EACCES) | |
6883 | rsp->hdr.Status = STATUS_ACCESS_DENIED; | |
6884 | if (ret == -EAGAIN) | |
6885 | rsp->hdr.Status = STATUS_FILE_LOCK_CONFLICT; | |
6886 | else if (ret == -EBADF) | |
6887 | rsp->hdr.Status = STATUS_INVALID_HANDLE; | |
6888 | else if (ret == -EFBIG || ret == -ENOSPC) | |
6889 | rsp->hdr.Status = STATUS_DISK_FULL; | |
6890 | else if (ret == -EINVAL) | |
6891 | rsp->hdr.Status = STATUS_INVALID_PARAMETER; | |
6892 | else if (ret == -EISDIR) | |
6893 | rsp->hdr.Status = STATUS_FILE_IS_A_DIRECTORY; | |
6894 | else if (ret == -E2BIG) | |
6895 | rsp->hdr.Status = STATUS_INVALID_VIEW_SIZE; | |
6896 | else | |
6897 | rsp->hdr.Status = STATUS_UNEXPECTED_IO_ERROR; | |
6898 | } | |
6899 | ||
6900 | ci_rsp->ChunksWritten = cpu_to_le32(chunk_count_written); | |
6901 | ci_rsp->ChunkBytesWritten = cpu_to_le32(chunk_size_written); | |
6902 | ci_rsp->TotalBytesWritten = cpu_to_le32(total_size_written); | |
6903 | out: | |
6904 | ksmbd_fd_put(work, src_fp); | |
6905 | ksmbd_fd_put(work, dst_fp); | |
6906 | return ret; | |
6907 | } | |
6908 | ||
6909 | static __be32 idev_ipv4_address(struct in_device *idev) | |
6910 | { | |
6911 | __be32 addr = 0; | |
6912 | ||
6913 | struct in_ifaddr *ifa; | |
6914 | ||
6915 | rcu_read_lock(); | |
6916 | in_dev_for_each_ifa_rcu(ifa, idev) { | |
6917 | if (ifa->ifa_flags & IFA_F_SECONDARY) | |
6918 | continue; | |
6919 | ||
6920 | addr = ifa->ifa_address; | |
6921 | break; | |
6922 | } | |
6923 | rcu_read_unlock(); | |
6924 | return addr; | |
6925 | } | |
6926 | ||
6927 | static int fsctl_query_iface_info_ioctl(struct ksmbd_conn *conn, | |
070fb21e NJ |
6928 | struct smb2_ioctl_req *req, |
6929 | struct smb2_ioctl_rsp *rsp) | |
e2f34481 NJ |
6930 | { |
6931 | struct network_interface_info_ioctl_rsp *nii_rsp = NULL; | |
6932 | int nbytes = 0; | |
6933 | struct net_device *netdev; | |
6934 | struct sockaddr_storage_rsp *sockaddr_storage; | |
6935 | unsigned int flags; | |
6936 | unsigned long long speed; | |
6937 | ||
6938 | rtnl_lock(); | |
6939 | for_each_netdev(&init_net, netdev) { | |
6940 | if (unlikely(!netdev)) { | |
6941 | rtnl_unlock(); | |
6942 | return -EINVAL; | |
6943 | } | |
6944 | ||
6945 | if (netdev->type == ARPHRD_LOOPBACK) | |
6946 | continue; | |
6947 | ||
6948 | flags = dev_get_flags(netdev); | |
6949 | if (!(flags & IFF_RUNNING)) | |
6950 | continue; | |
6951 | ||
6952 | nii_rsp = (struct network_interface_info_ioctl_rsp *) | |
6953 | &rsp->Buffer[nbytes]; | |
6954 | nii_rsp->IfIndex = cpu_to_le32(netdev->ifindex); | |
6955 | ||
6956 | /* TODO: specify the RDMA capabilities */ | |
6957 | if (netdev->num_tx_queues > 1) | |
6958 | nii_rsp->Capability = cpu_to_le32(RSS_CAPABLE); | |
6959 | else | |
6960 | nii_rsp->Capability = 0; | |
6961 | ||
6962 | nii_rsp->Next = cpu_to_le32(152); | |
6963 | nii_rsp->Reserved = 0; | |
6964 | ||
6965 | if (netdev->ethtool_ops->get_link_ksettings) { | |
6966 | struct ethtool_link_ksettings cmd; | |
6967 | ||
6968 | netdev->ethtool_ops->get_link_ksettings(netdev, &cmd); | |
6969 | speed = cmd.base.speed; | |
6970 | } else { | |
bde1694a NJ |
6971 | pr_err("%s %s\n", netdev->name, |
6972 | "speed is unknown, defaulting to 1Gb/sec"); | |
e2f34481 NJ |
6973 | speed = SPEED_1000; |
6974 | } | |
6975 | ||
6976 | speed *= 1000000; | |
6977 | nii_rsp->LinkSpeed = cpu_to_le64(speed); | |
6978 | ||
6979 | sockaddr_storage = (struct sockaddr_storage_rsp *) | |
6980 | nii_rsp->SockAddr_Storage; | |
6981 | memset(sockaddr_storage, 0, 128); | |
6982 | ||
6983 | if (conn->peer_addr.ss_family == PF_INET) { | |
6984 | struct in_device *idev; | |
6985 | ||
6986 | sockaddr_storage->Family = cpu_to_le16(INTERNETWORK); | |
6987 | sockaddr_storage->addr4.Port = 0; | |
6988 | ||
6989 | idev = __in_dev_get_rtnl(netdev); | |
6990 | if (!idev) | |
6991 | continue; | |
6992 | sockaddr_storage->addr4.IPv4address = | |
6993 | idev_ipv4_address(idev); | |
6994 | } else { | |
6995 | struct inet6_dev *idev6; | |
6996 | struct inet6_ifaddr *ifa; | |
6997 | __u8 *ipv6_addr = sockaddr_storage->addr6.IPv6address; | |
6998 | ||
6999 | sockaddr_storage->Family = cpu_to_le16(INTERNETWORKV6); | |
7000 | sockaddr_storage->addr6.Port = 0; | |
7001 | sockaddr_storage->addr6.FlowInfo = 0; | |
7002 | ||
7003 | idev6 = __in6_dev_get(netdev); | |
7004 | if (!idev6) | |
7005 | continue; | |
7006 | ||
7007 | list_for_each_entry(ifa, &idev6->addr_list, if_list) { | |
7008 | if (ifa->flags & (IFA_F_TENTATIVE | | |
7009 | IFA_F_DEPRECATED)) | |
7010 | continue; | |
7011 | memcpy(ipv6_addr, ifa->addr.s6_addr, 16); | |
7012 | break; | |
7013 | } | |
7014 | sockaddr_storage->addr6.ScopeId = 0; | |
7015 | } | |
7016 | ||
7017 | nbytes += sizeof(struct network_interface_info_ioctl_rsp); | |
7018 | } | |
7019 | rtnl_unlock(); | |
7020 | ||
7021 | /* zero if this is last one */ | |
7022 | if (nii_rsp) | |
7023 | nii_rsp->Next = 0; | |
7024 | ||
7025 | if (!nbytes) { | |
7026 | rsp->hdr.Status = STATUS_BUFFER_TOO_SMALL; | |
7027 | return -EINVAL; | |
7028 | } | |
7029 | ||
7030 | rsp->PersistentFileId = cpu_to_le64(SMB2_NO_FID); | |
7031 | rsp->VolatileFileId = cpu_to_le64(SMB2_NO_FID); | |
7032 | return nbytes; | |
7033 | } | |
7034 | ||
e2f34481 | 7035 | static int fsctl_validate_negotiate_info(struct ksmbd_conn *conn, |
070fb21e NJ |
7036 | struct validate_negotiate_info_req *neg_req, |
7037 | struct validate_negotiate_info_rsp *neg_rsp) | |
e2f34481 NJ |
7038 | { |
7039 | int ret = 0; | |
7040 | int dialect; | |
7041 | ||
7042 | dialect = ksmbd_lookup_dialect_by_id(neg_req->Dialects, | |
070fb21e | 7043 | neg_req->DialectCount); |
e2f34481 NJ |
7044 | if (dialect == BAD_PROT_ID || dialect != conn->dialect) { |
7045 | ret = -EINVAL; | |
7046 | goto err_out; | |
7047 | } | |
7048 | ||
7049 | if (strncmp(neg_req->Guid, conn->ClientGUID, SMB2_CLIENT_GUID_SIZE)) { | |
7050 | ret = -EINVAL; | |
7051 | goto err_out; | |
7052 | } | |
7053 | ||
7054 | if (le16_to_cpu(neg_req->SecurityMode) != conn->cli_sec_mode) { | |
7055 | ret = -EINVAL; | |
7056 | goto err_out; | |
7057 | } | |
7058 | ||
7059 | if (le32_to_cpu(neg_req->Capabilities) != conn->cli_cap) { | |
7060 | ret = -EINVAL; | |
7061 | goto err_out; | |
7062 | } | |
7063 | ||
7064 | neg_rsp->Capabilities = cpu_to_le32(conn->vals->capabilities); | |
7065 | memset(neg_rsp->Guid, 0, SMB2_CLIENT_GUID_SIZE); | |
7066 | neg_rsp->SecurityMode = cpu_to_le16(conn->srv_sec_mode); | |
7067 | neg_rsp->Dialect = cpu_to_le16(conn->dialect); | |
7068 | err_out: | |
7069 | return ret; | |
7070 | } | |
7071 | ||
64b39f4a | 7072 | static int fsctl_query_allocated_ranges(struct ksmbd_work *work, u64 id, |
070fb21e NJ |
7073 | struct file_allocated_range_buffer *qar_req, |
7074 | struct file_allocated_range_buffer *qar_rsp, | |
7075 | int in_count, int *out_count) | |
e2f34481 NJ |
7076 | { |
7077 | struct ksmbd_file *fp; | |
7078 | loff_t start, length; | |
7079 | int ret = 0; | |
7080 | ||
7081 | *out_count = 0; | |
7082 | if (in_count == 0) | |
7083 | return -EINVAL; | |
7084 | ||
7085 | fp = ksmbd_lookup_fd_fast(work, id); | |
7086 | if (!fp) | |
7087 | return -ENOENT; | |
7088 | ||
7089 | start = le64_to_cpu(qar_req->file_offset); | |
7090 | length = le64_to_cpu(qar_req->length); | |
7091 | ||
7092 | ret = ksmbd_vfs_fqar_lseek(fp, start, length, | |
070fb21e | 7093 | qar_rsp, in_count, out_count); |
e2f34481 NJ |
7094 | if (ret && ret != -E2BIG) |
7095 | *out_count = 0; | |
7096 | ||
7097 | ksmbd_fd_put(work, fp); | |
7098 | return ret; | |
7099 | } | |
7100 | ||
64b39f4a | 7101 | static int fsctl_pipe_transceive(struct ksmbd_work *work, u64 id, |
070fb21e NJ |
7102 | int out_buf_len, struct smb2_ioctl_req *req, |
7103 | struct smb2_ioctl_rsp *rsp) | |
e2f34481 NJ |
7104 | { |
7105 | struct ksmbd_rpc_command *rpc_resp; | |
7106 | char *data_buf = (char *)&req->Buffer[0]; | |
7107 | int nbytes = 0; | |
7108 | ||
64b39f4a | 7109 | rpc_resp = ksmbd_rpc_ioctl(work->sess, id, data_buf, |
070fb21e | 7110 | le32_to_cpu(req->InputCount)); |
e2f34481 NJ |
7111 | if (rpc_resp) { |
7112 | if (rpc_resp->flags == KSMBD_RPC_SOME_NOT_MAPPED) { | |
7113 | /* | |
7114 | * set STATUS_SOME_NOT_MAPPED response | |
7115 | * for unknown domain sid. | |
7116 | */ | |
7117 | rsp->hdr.Status = STATUS_SOME_NOT_MAPPED; | |
7118 | } else if (rpc_resp->flags == KSMBD_RPC_ENOTIMPLEMENTED) { | |
7119 | rsp->hdr.Status = STATUS_NOT_SUPPORTED; | |
7120 | goto out; | |
7121 | } else if (rpc_resp->flags != KSMBD_RPC_OK) { | |
7122 | rsp->hdr.Status = STATUS_INVALID_PARAMETER; | |
7123 | goto out; | |
7124 | } | |
7125 | ||
7126 | nbytes = rpc_resp->payload_sz; | |
7127 | if (rpc_resp->payload_sz > out_buf_len) { | |
7128 | rsp->hdr.Status = STATUS_BUFFER_OVERFLOW; | |
7129 | nbytes = out_buf_len; | |
7130 | } | |
7131 | ||
7132 | if (!rpc_resp->payload_sz) { | |
7133 | rsp->hdr.Status = | |
7134 | STATUS_UNEXPECTED_IO_ERROR; | |
7135 | goto out; | |
7136 | } | |
7137 | ||
7138 | memcpy((char *)rsp->Buffer, rpc_resp->payload, nbytes); | |
7139 | } | |
7140 | out: | |
79f6b11a | 7141 | kvfree(rpc_resp); |
e2f34481 NJ |
7142 | return nbytes; |
7143 | } | |
7144 | ||
64b39f4a | 7145 | static inline int fsctl_set_sparse(struct ksmbd_work *work, u64 id, |
070fb21e | 7146 | struct file_sparse *sparse) |
e2f34481 NJ |
7147 | { |
7148 | struct ksmbd_file *fp; | |
7149 | int ret = 0; | |
7150 | __le32 old_fattr; | |
7151 | ||
7152 | fp = ksmbd_lookup_fd_fast(work, id); | |
7153 | if (!fp) | |
7154 | return -ENOENT; | |
7155 | ||
7156 | old_fattr = fp->f_ci->m_fattr; | |
7157 | if (sparse->SetSparse) | |
7158 | fp->f_ci->m_fattr |= ATTR_SPARSE_FILE_LE; | |
7159 | else | |
7160 | fp->f_ci->m_fattr &= ~ATTR_SPARSE_FILE_LE; | |
7161 | ||
7162 | if (fp->f_ci->m_fattr != old_fattr && | |
64b39f4a NJ |
7163 | test_share_config_flag(work->tcon->share_conf, |
7164 | KSMBD_SHARE_FLAG_STORE_DOS_ATTRS)) { | |
e2f34481 NJ |
7165 | struct xattr_dos_attrib da; |
7166 | ||
7167 | ret = ksmbd_vfs_get_dos_attrib_xattr(fp->filp->f_path.dentry, &da); | |
7168 | if (ret <= 0) | |
7169 | goto out; | |
7170 | ||
7171 | da.attr = le32_to_cpu(fp->f_ci->m_fattr); | |
7172 | ret = ksmbd_vfs_set_dos_attrib_xattr(fp->filp->f_path.dentry, &da); | |
7173 | if (ret) | |
7174 | fp->f_ci->m_fattr = old_fattr; | |
7175 | } | |
7176 | ||
7177 | out: | |
7178 | ksmbd_fd_put(work, fp); | |
7179 | return ret; | |
7180 | } | |
7181 | ||
7182 | static int fsctl_request_resume_key(struct ksmbd_work *work, | |
070fb21e NJ |
7183 | struct smb2_ioctl_req *req, |
7184 | struct resume_key_ioctl_rsp *key_rsp) | |
e2f34481 NJ |
7185 | { |
7186 | struct ksmbd_file *fp; | |
7187 | ||
7188 | fp = ksmbd_lookup_fd_slow(work, | |
070fb21e NJ |
7189 | le64_to_cpu(req->VolatileFileId), |
7190 | le64_to_cpu(req->PersistentFileId)); | |
e2f34481 NJ |
7191 | if (!fp) |
7192 | return -ENOENT; | |
7193 | ||
7194 | memset(key_rsp, 0, sizeof(*key_rsp)); | |
7195 | key_rsp->ResumeKey[0] = req->VolatileFileId; | |
7196 | key_rsp->ResumeKey[1] = req->PersistentFileId; | |
7197 | ksmbd_fd_put(work, fp); | |
7198 | ||
7199 | return 0; | |
7200 | } | |
7201 | ||
7202 | /** | |
7203 | * smb2_ioctl() - handler for smb2 ioctl command | |
7204 | * @work: smb work containing ioctl command buffer | |
7205 | * | |
7206 | * Return: 0 on success, otherwise error | |
7207 | */ | |
7208 | int smb2_ioctl(struct ksmbd_work *work) | |
7209 | { | |
7210 | struct smb2_ioctl_req *req; | |
7211 | struct smb2_ioctl_rsp *rsp, *rsp_org; | |
7212 | int cnt_code, nbytes = 0; | |
7213 | int out_buf_len; | |
64b39f4a | 7214 | u64 id = KSMBD_NO_FID; |
e2f34481 NJ |
7215 | struct ksmbd_conn *conn = work->conn; |
7216 | int ret = 0; | |
7217 | ||
e5066499 | 7218 | rsp_org = work->response_buf; |
e2f34481 NJ |
7219 | if (work->next_smb2_rcv_hdr_off) { |
7220 | req = REQUEST_BUF_NEXT(work); | |
7221 | rsp = RESPONSE_BUF_NEXT(work); | |
7222 | if (!HAS_FILE_ID(le64_to_cpu(req->VolatileFileId))) { | |
7223 | ksmbd_debug(SMB, "Compound request set FID = %u\n", | |
070fb21e | 7224 | work->compound_fid); |
e2f34481 NJ |
7225 | id = work->compound_fid; |
7226 | } | |
7227 | } else { | |
e5066499 NJ |
7228 | req = work->request_buf; |
7229 | rsp = work->response_buf; | |
e2f34481 NJ |
7230 | } |
7231 | ||
7232 | if (!HAS_FILE_ID(id)) | |
7233 | id = le64_to_cpu(req->VolatileFileId); | |
7234 | ||
7235 | if (req->Flags != cpu_to_le32(SMB2_0_IOCTL_IS_FSCTL)) { | |
7236 | rsp->hdr.Status = STATUS_NOT_SUPPORTED; | |
7237 | goto out; | |
7238 | } | |
7239 | ||
7240 | cnt_code = le32_to_cpu(req->CntCode); | |
7241 | out_buf_len = le32_to_cpu(req->MaxOutputResponse); | |
7242 | out_buf_len = min(KSMBD_IPC_MAX_PAYLOAD, out_buf_len); | |
7243 | ||
7244 | switch (cnt_code) { | |
7245 | case FSCTL_DFS_GET_REFERRALS: | |
7246 | case FSCTL_DFS_GET_REFERRALS_EX: | |
7247 | /* Not support DFS yet */ | |
7248 | rsp->hdr.Status = STATUS_FS_DRIVER_REQUIRED; | |
7249 | goto out; | |
7250 | case FSCTL_CREATE_OR_GET_OBJECT_ID: | |
7251 | { | |
7252 | struct file_object_buf_type1_ioctl_rsp *obj_buf; | |
7253 | ||
7254 | nbytes = sizeof(struct file_object_buf_type1_ioctl_rsp); | |
7255 | obj_buf = (struct file_object_buf_type1_ioctl_rsp *) | |
7256 | &rsp->Buffer[0]; | |
7257 | ||
7258 | /* | |
7259 | * TODO: This is dummy implementation to pass smbtorture | |
7260 | * Need to check correct response later | |
7261 | */ | |
7262 | memset(obj_buf->ObjectId, 0x0, 16); | |
7263 | memset(obj_buf->BirthVolumeId, 0x0, 16); | |
7264 | memset(obj_buf->BirthObjectId, 0x0, 16); | |
7265 | memset(obj_buf->DomainId, 0x0, 16); | |
7266 | ||
7267 | break; | |
7268 | } | |
7269 | case FSCTL_PIPE_TRANSCEIVE: | |
7270 | nbytes = fsctl_pipe_transceive(work, id, out_buf_len, req, rsp); | |
7271 | break; | |
7272 | case FSCTL_VALIDATE_NEGOTIATE_INFO: | |
7273 | if (conn->dialect < SMB30_PROT_ID) { | |
7274 | ret = -EOPNOTSUPP; | |
7275 | goto out; | |
7276 | } | |
7277 | ||
7278 | ret = fsctl_validate_negotiate_info(conn, | |
7279 | (struct validate_negotiate_info_req *)&req->Buffer[0], | |
7280 | (struct validate_negotiate_info_rsp *)&rsp->Buffer[0]); | |
7281 | if (ret < 0) | |
7282 | goto out; | |
7283 | ||
7284 | nbytes = sizeof(struct validate_negotiate_info_rsp); | |
7285 | rsp->PersistentFileId = cpu_to_le64(SMB2_NO_FID); | |
7286 | rsp->VolatileFileId = cpu_to_le64(SMB2_NO_FID); | |
7287 | break; | |
7288 | case FSCTL_QUERY_NETWORK_INTERFACE_INFO: | |
7289 | nbytes = fsctl_query_iface_info_ioctl(conn, req, rsp); | |
7290 | if (nbytes < 0) | |
7291 | goto out; | |
7292 | break; | |
7293 | case FSCTL_REQUEST_RESUME_KEY: | |
7294 | if (out_buf_len < sizeof(struct resume_key_ioctl_rsp)) { | |
7295 | ret = -EINVAL; | |
7296 | goto out; | |
7297 | } | |
7298 | ||
7299 | ret = fsctl_request_resume_key(work, req, | |
070fb21e | 7300 | (struct resume_key_ioctl_rsp *)&rsp->Buffer[0]); |
e2f34481 NJ |
7301 | if (ret < 0) |
7302 | goto out; | |
7303 | rsp->PersistentFileId = req->PersistentFileId; | |
7304 | rsp->VolatileFileId = req->VolatileFileId; | |
7305 | nbytes = sizeof(struct resume_key_ioctl_rsp); | |
7306 | break; | |
7307 | case FSCTL_COPYCHUNK: | |
7308 | case FSCTL_COPYCHUNK_WRITE: | |
64b39f4a | 7309 | if (!test_tree_conn_flag(work->tcon, KSMBD_TREE_CONN_FLAG_WRITABLE)) { |
e2f34481 | 7310 | ksmbd_debug(SMB, |
070fb21e | 7311 | "User does not have write permission\n"); |
e2f34481 NJ |
7312 | ret = -EACCES; |
7313 | goto out; | |
7314 | } | |
7315 | ||
7316 | if (out_buf_len < sizeof(struct copychunk_ioctl_rsp)) { | |
7317 | ret = -EINVAL; | |
7318 | goto out; | |
7319 | } | |
7320 | ||
7321 | nbytes = sizeof(struct copychunk_ioctl_rsp); | |
7322 | fsctl_copychunk(work, req, rsp); | |
7323 | break; | |
7324 | case FSCTL_SET_SPARSE: | |
7325 | ret = fsctl_set_sparse(work, id, | |
070fb21e | 7326 | (struct file_sparse *)&req->Buffer[0]); |
e2f34481 NJ |
7327 | if (ret < 0) |
7328 | goto out; | |
7329 | break; | |
7330 | case FSCTL_SET_ZERO_DATA: | |
7331 | { | |
7332 | struct file_zero_data_information *zero_data; | |
7333 | struct ksmbd_file *fp; | |
7334 | loff_t off, len; | |
7335 | ||
64b39f4a | 7336 | if (!test_tree_conn_flag(work->tcon, KSMBD_TREE_CONN_FLAG_WRITABLE)) { |
e2f34481 | 7337 | ksmbd_debug(SMB, |
070fb21e | 7338 | "User does not have write permission\n"); |
e2f34481 NJ |
7339 | ret = -EACCES; |
7340 | goto out; | |
7341 | } | |
7342 | ||
7343 | zero_data = | |
7344 | (struct file_zero_data_information *)&req->Buffer[0]; | |
7345 | ||
7346 | fp = ksmbd_lookup_fd_fast(work, id); | |
7347 | if (!fp) { | |
7348 | ret = -ENOENT; | |
7349 | goto out; | |
7350 | } | |
7351 | ||
7352 | off = le64_to_cpu(zero_data->FileOffset); | |
7353 | len = le64_to_cpu(zero_data->BeyondFinalZero) - off; | |
7354 | ||
7355 | ret = ksmbd_vfs_zero_data(work, fp, off, len); | |
7356 | ksmbd_fd_put(work, fp); | |
7357 | if (ret < 0) | |
7358 | goto out; | |
7359 | break; | |
7360 | } | |
7361 | case FSCTL_QUERY_ALLOCATED_RANGES: | |
7362 | ret = fsctl_query_allocated_ranges(work, id, | |
7363 | (struct file_allocated_range_buffer *)&req->Buffer[0], | |
7364 | (struct file_allocated_range_buffer *)&rsp->Buffer[0], | |
7365 | out_buf_len / | |
7366 | sizeof(struct file_allocated_range_buffer), &nbytes); | |
7367 | if (ret == -E2BIG) { | |
7368 | rsp->hdr.Status = STATUS_BUFFER_OVERFLOW; | |
7369 | } else if (ret < 0) { | |
7370 | nbytes = 0; | |
7371 | goto out; | |
7372 | } | |
7373 | ||
7374 | nbytes *= sizeof(struct file_allocated_range_buffer); | |
7375 | break; | |
7376 | case FSCTL_GET_REPARSE_POINT: | |
7377 | { | |
7378 | struct reparse_data_buffer *reparse_ptr; | |
7379 | struct ksmbd_file *fp; | |
7380 | ||
7381 | reparse_ptr = (struct reparse_data_buffer *)&rsp->Buffer[0]; | |
7382 | fp = ksmbd_lookup_fd_fast(work, id); | |
7383 | if (!fp) { | |
bde1694a | 7384 | pr_err("not found fp!!\n"); |
e2f34481 NJ |
7385 | ret = -ENOENT; |
7386 | goto out; | |
7387 | } | |
7388 | ||
7389 | reparse_ptr->ReparseTag = | |
7390 | smb2_get_reparse_tag_special_file(FP_INODE(fp)->i_mode); | |
7391 | reparse_ptr->ReparseDataLength = 0; | |
7392 | ksmbd_fd_put(work, fp); | |
7393 | nbytes = sizeof(struct reparse_data_buffer); | |
7394 | break; | |
7395 | } | |
eb817368 NJ |
7396 | case FSCTL_DUPLICATE_EXTENTS_TO_FILE: |
7397 | { | |
7398 | struct ksmbd_file *fp_in, *fp_out = NULL; | |
7399 | struct duplicate_extents_to_file *dup_ext; | |
7400 | loff_t src_off, dst_off, length, cloned; | |
7401 | ||
7402 | dup_ext = (struct duplicate_extents_to_file *)&req->Buffer[0]; | |
7403 | ||
7404 | fp_in = ksmbd_lookup_fd_slow(work, dup_ext->VolatileFileHandle, | |
070fb21e | 7405 | dup_ext->PersistentFileHandle); |
eb817368 | 7406 | if (!fp_in) { |
bde1694a | 7407 | pr_err("not found file handle in duplicate extent to file\n"); |
eb817368 NJ |
7408 | ret = -ENOENT; |
7409 | goto out; | |
7410 | } | |
7411 | ||
7412 | fp_out = ksmbd_lookup_fd_fast(work, id); | |
7413 | if (!fp_out) { | |
bde1694a | 7414 | pr_err("not found fp\n"); |
eb817368 NJ |
7415 | ret = -ENOENT; |
7416 | goto dup_ext_out; | |
7417 | } | |
7418 | ||
7419 | src_off = le64_to_cpu(dup_ext->SourceFileOffset); | |
7420 | dst_off = le64_to_cpu(dup_ext->TargetFileOffset); | |
7421 | length = le64_to_cpu(dup_ext->ByteCount); | |
7422 | cloned = vfs_clone_file_range(fp_in->filp, src_off, fp_out->filp, | |
070fb21e | 7423 | dst_off, length, 0); |
eb817368 NJ |
7424 | if (cloned == -EXDEV || cloned == -EOPNOTSUPP) { |
7425 | ret = -EOPNOTSUPP; | |
7426 | goto dup_ext_out; | |
7427 | } else if (cloned != length) { | |
f8524776 NJ |
7428 | cloned = vfs_copy_file_range(fp_in->filp, src_off, |
7429 | fp_out->filp, dst_off, length, 0); | |
eb817368 NJ |
7430 | if (cloned != length) { |
7431 | if (cloned < 0) | |
7432 | ret = cloned; | |
7433 | else | |
7434 | ret = -EINVAL; | |
7435 | } | |
7436 | } | |
7437 | ||
7438 | dup_ext_out: | |
7439 | ksmbd_fd_put(work, fp_in); | |
7440 | ksmbd_fd_put(work, fp_out); | |
7441 | if (ret < 0) | |
7442 | goto out; | |
7443 | break; | |
7444 | } | |
e2f34481 NJ |
7445 | default: |
7446 | ksmbd_debug(SMB, "not implemented yet ioctl command 0x%x\n", | |
070fb21e | 7447 | cnt_code); |
e2f34481 NJ |
7448 | ret = -EOPNOTSUPP; |
7449 | goto out; | |
7450 | } | |
7451 | ||
7452 | rsp->CntCode = cpu_to_le32(cnt_code); | |
7453 | rsp->InputCount = cpu_to_le32(0); | |
7454 | rsp->InputOffset = cpu_to_le32(112); | |
7455 | rsp->OutputOffset = cpu_to_le32(112); | |
7456 | rsp->OutputCount = cpu_to_le32(nbytes); | |
7457 | rsp->StructureSize = cpu_to_le16(49); | |
7458 | rsp->Reserved = cpu_to_le16(0); | |
7459 | rsp->Flags = cpu_to_le32(0); | |
7460 | rsp->Reserved2 = cpu_to_le32(0); | |
7461 | inc_rfc1001_len(rsp_org, 48 + nbytes); | |
7462 | ||
7463 | return 0; | |
7464 | ||
7465 | out: | |
7466 | if (ret == -EACCES) | |
7467 | rsp->hdr.Status = STATUS_ACCESS_DENIED; | |
7468 | else if (ret == -ENOENT) | |
7469 | rsp->hdr.Status = STATUS_OBJECT_NAME_NOT_FOUND; | |
7470 | else if (ret == -EOPNOTSUPP) | |
7471 | rsp->hdr.Status = STATUS_NOT_SUPPORTED; | |
7472 | else if (ret < 0 || rsp->hdr.Status == 0) | |
7473 | rsp->hdr.Status = STATUS_INVALID_PARAMETER; | |
7474 | smb2_set_err_rsp(work); | |
7475 | return 0; | |
7476 | } | |
7477 | ||
7478 | /** | |
7479 | * smb20_oplock_break_ack() - handler for smb2.0 oplock break command | |
7480 | * @work: smb work containing oplock break command buffer | |
7481 | * | |
7482 | * Return: 0 | |
7483 | */ | |
7484 | static void smb20_oplock_break_ack(struct ksmbd_work *work) | |
7485 | { | |
e5066499 NJ |
7486 | struct smb2_oplock_break *req = work->request_buf; |
7487 | struct smb2_oplock_break *rsp = work->response_buf; | |
e2f34481 NJ |
7488 | struct ksmbd_file *fp; |
7489 | struct oplock_info *opinfo = NULL; | |
7490 | __le32 err = 0; | |
7491 | int ret = 0; | |
64b39f4a | 7492 | u64 volatile_id, persistent_id; |
e2f34481 NJ |
7493 | char req_oplevel = 0, rsp_oplevel = 0; |
7494 | unsigned int oplock_change_type; | |
7495 | ||
7496 | volatile_id = le64_to_cpu(req->VolatileFid); | |
7497 | persistent_id = le64_to_cpu(req->PersistentFid); | |
7498 | req_oplevel = req->OplockLevel; | |
7499 | ksmbd_debug(OPLOCK, "v_id %llu, p_id %llu request oplock level %d\n", | |
7500 | volatile_id, persistent_id, req_oplevel); | |
7501 | ||
7502 | fp = ksmbd_lookup_fd_slow(work, volatile_id, persistent_id); | |
7503 | if (!fp) { | |
7504 | rsp->hdr.Status = STATUS_FILE_CLOSED; | |
7505 | smb2_set_err_rsp(work); | |
7506 | return; | |
7507 | } | |
7508 | ||
7509 | opinfo = opinfo_get(fp); | |
7510 | if (!opinfo) { | |
bde1694a | 7511 | pr_err("unexpected null oplock_info\n"); |
e2f34481 NJ |
7512 | rsp->hdr.Status = STATUS_INVALID_OPLOCK_PROTOCOL; |
7513 | smb2_set_err_rsp(work); | |
7514 | ksmbd_fd_put(work, fp); | |
7515 | return; | |
7516 | } | |
7517 | ||
7518 | if (opinfo->level == SMB2_OPLOCK_LEVEL_NONE) { | |
7519 | rsp->hdr.Status = STATUS_INVALID_OPLOCK_PROTOCOL; | |
7520 | goto err_out; | |
7521 | } | |
7522 | ||
7523 | if (opinfo->op_state == OPLOCK_STATE_NONE) { | |
7524 | ksmbd_debug(SMB, "unexpected oplock state 0x%x\n", opinfo->op_state); | |
7525 | rsp->hdr.Status = STATUS_UNSUCCESSFUL; | |
7526 | goto err_out; | |
7527 | } | |
7528 | ||
64b39f4a NJ |
7529 | if ((opinfo->level == SMB2_OPLOCK_LEVEL_EXCLUSIVE || |
7530 | opinfo->level == SMB2_OPLOCK_LEVEL_BATCH) && | |
7531 | (req_oplevel != SMB2_OPLOCK_LEVEL_II && | |
7532 | req_oplevel != SMB2_OPLOCK_LEVEL_NONE)) { | |
e2f34481 NJ |
7533 | err = STATUS_INVALID_OPLOCK_PROTOCOL; |
7534 | oplock_change_type = OPLOCK_WRITE_TO_NONE; | |
64b39f4a NJ |
7535 | } else if (opinfo->level == SMB2_OPLOCK_LEVEL_II && |
7536 | req_oplevel != SMB2_OPLOCK_LEVEL_NONE) { | |
e2f34481 NJ |
7537 | err = STATUS_INVALID_OPLOCK_PROTOCOL; |
7538 | oplock_change_type = OPLOCK_READ_TO_NONE; | |
64b39f4a NJ |
7539 | } else if (req_oplevel == SMB2_OPLOCK_LEVEL_II || |
7540 | req_oplevel == SMB2_OPLOCK_LEVEL_NONE) { | |
e2f34481 | 7541 | err = STATUS_INVALID_DEVICE_STATE; |
64b39f4a NJ |
7542 | if ((opinfo->level == SMB2_OPLOCK_LEVEL_EXCLUSIVE || |
7543 | opinfo->level == SMB2_OPLOCK_LEVEL_BATCH) && | |
7544 | req_oplevel == SMB2_OPLOCK_LEVEL_II) { | |
e2f34481 | 7545 | oplock_change_type = OPLOCK_WRITE_TO_READ; |
64b39f4a NJ |
7546 | } else if ((opinfo->level == SMB2_OPLOCK_LEVEL_EXCLUSIVE || |
7547 | opinfo->level == SMB2_OPLOCK_LEVEL_BATCH) && | |
7548 | req_oplevel == SMB2_OPLOCK_LEVEL_NONE) { | |
e2f34481 | 7549 | oplock_change_type = OPLOCK_WRITE_TO_NONE; |
64b39f4a NJ |
7550 | } else if (opinfo->level == SMB2_OPLOCK_LEVEL_II && |
7551 | req_oplevel == SMB2_OPLOCK_LEVEL_NONE) { | |
e2f34481 | 7552 | oplock_change_type = OPLOCK_READ_TO_NONE; |
64b39f4a | 7553 | } else { |
e2f34481 | 7554 | oplock_change_type = 0; |
64b39f4a NJ |
7555 | } |
7556 | } else { | |
e2f34481 | 7557 | oplock_change_type = 0; |
64b39f4a | 7558 | } |
e2f34481 NJ |
7559 | |
7560 | switch (oplock_change_type) { | |
7561 | case OPLOCK_WRITE_TO_READ: | |
7562 | ret = opinfo_write_to_read(opinfo); | |
7563 | rsp_oplevel = SMB2_OPLOCK_LEVEL_II; | |
7564 | break; | |
7565 | case OPLOCK_WRITE_TO_NONE: | |
7566 | ret = opinfo_write_to_none(opinfo); | |
7567 | rsp_oplevel = SMB2_OPLOCK_LEVEL_NONE; | |
7568 | break; | |
7569 | case OPLOCK_READ_TO_NONE: | |
7570 | ret = opinfo_read_to_none(opinfo); | |
7571 | rsp_oplevel = SMB2_OPLOCK_LEVEL_NONE; | |
7572 | break; | |
7573 | default: | |
bde1694a NJ |
7574 | pr_err("unknown oplock change 0x%x -> 0x%x\n", |
7575 | opinfo->level, rsp_oplevel); | |
e2f34481 NJ |
7576 | } |
7577 | ||
7578 | if (ret < 0) { | |
7579 | rsp->hdr.Status = err; | |
7580 | goto err_out; | |
7581 | } | |
7582 | ||
7583 | opinfo_put(opinfo); | |
7584 | ksmbd_fd_put(work, fp); | |
7585 | opinfo->op_state = OPLOCK_STATE_NONE; | |
7586 | wake_up_interruptible_all(&opinfo->oplock_q); | |
7587 | ||
7588 | rsp->StructureSize = cpu_to_le16(24); | |
7589 | rsp->OplockLevel = rsp_oplevel; | |
7590 | rsp->Reserved = 0; | |
7591 | rsp->Reserved2 = 0; | |
7592 | rsp->VolatileFid = cpu_to_le64(volatile_id); | |
7593 | rsp->PersistentFid = cpu_to_le64(persistent_id); | |
7594 | inc_rfc1001_len(rsp, 24); | |
7595 | return; | |
7596 | ||
7597 | err_out: | |
7598 | opinfo->op_state = OPLOCK_STATE_NONE; | |
7599 | wake_up_interruptible_all(&opinfo->oplock_q); | |
7600 | ||
7601 | opinfo_put(opinfo); | |
7602 | ksmbd_fd_put(work, fp); | |
7603 | smb2_set_err_rsp(work); | |
7604 | } | |
7605 | ||
7606 | static int check_lease_state(struct lease *lease, __le32 req_state) | |
7607 | { | |
7608 | if ((lease->new_state == | |
64b39f4a NJ |
7609 | (SMB2_LEASE_READ_CACHING_LE | SMB2_LEASE_HANDLE_CACHING_LE)) && |
7610 | !(req_state & SMB2_LEASE_WRITE_CACHING_LE)) { | |
e2f34481 NJ |
7611 | lease->new_state = req_state; |
7612 | return 0; | |
7613 | } | |
7614 | ||
7615 | if (lease->new_state == req_state) | |
7616 | return 0; | |
7617 | ||
7618 | return 1; | |
7619 | } | |
7620 | ||
7621 | /** | |
7622 | * smb21_lease_break_ack() - handler for smb2.1 lease break command | |
7623 | * @work: smb work containing lease break command buffer | |
7624 | * | |
7625 | * Return: 0 | |
7626 | */ | |
7627 | static void smb21_lease_break_ack(struct ksmbd_work *work) | |
7628 | { | |
7629 | struct ksmbd_conn *conn = work->conn; | |
e5066499 NJ |
7630 | struct smb2_lease_ack *req = work->request_buf; |
7631 | struct smb2_lease_ack *rsp = work->response_buf; | |
e2f34481 NJ |
7632 | struct oplock_info *opinfo; |
7633 | __le32 err = 0; | |
7634 | int ret = 0; | |
7635 | unsigned int lease_change_type; | |
7636 | __le32 lease_state; | |
7637 | struct lease *lease; | |
7638 | ||
7639 | ksmbd_debug(OPLOCK, "smb21 lease break, lease state(0x%x)\n", | |
070fb21e | 7640 | le32_to_cpu(req->LeaseState)); |
e2f34481 NJ |
7641 | opinfo = lookup_lease_in_table(conn, req->LeaseKey); |
7642 | if (!opinfo) { | |
7643 | ksmbd_debug(OPLOCK, "file not opened\n"); | |
7644 | smb2_set_err_rsp(work); | |
7645 | rsp->hdr.Status = STATUS_UNSUCCESSFUL; | |
7646 | return; | |
7647 | } | |
7648 | lease = opinfo->o_lease; | |
7649 | ||
7650 | if (opinfo->op_state == OPLOCK_STATE_NONE) { | |
bde1694a NJ |
7651 | pr_err("unexpected lease break state 0x%x\n", |
7652 | opinfo->op_state); | |
e2f34481 NJ |
7653 | rsp->hdr.Status = STATUS_UNSUCCESSFUL; |
7654 | goto err_out; | |
7655 | } | |
7656 | ||
7657 | if (check_lease_state(lease, req->LeaseState)) { | |
7658 | rsp->hdr.Status = STATUS_REQUEST_NOT_ACCEPTED; | |
7659 | ksmbd_debug(OPLOCK, | |
070fb21e NJ |
7660 | "req lease state: 0x%x, expected state: 0x%x\n", |
7661 | req->LeaseState, lease->new_state); | |
e2f34481 NJ |
7662 | goto err_out; |
7663 | } | |
7664 | ||
7665 | if (!atomic_read(&opinfo->breaking_cnt)) { | |
7666 | rsp->hdr.Status = STATUS_UNSUCCESSFUL; | |
7667 | goto err_out; | |
7668 | } | |
7669 | ||
7670 | /* check for bad lease state */ | |
070fb21e NJ |
7671 | if (req->LeaseState & |
7672 | (~(SMB2_LEASE_READ_CACHING_LE | SMB2_LEASE_HANDLE_CACHING_LE))) { | |
e2f34481 NJ |
7673 | err = STATUS_INVALID_OPLOCK_PROTOCOL; |
7674 | if (lease->state & SMB2_LEASE_WRITE_CACHING_LE) | |
7675 | lease_change_type = OPLOCK_WRITE_TO_NONE; | |
7676 | else | |
7677 | lease_change_type = OPLOCK_READ_TO_NONE; | |
7678 | ksmbd_debug(OPLOCK, "handle bad lease state 0x%x -> 0x%x\n", | |
070fb21e NJ |
7679 | le32_to_cpu(lease->state), |
7680 | le32_to_cpu(req->LeaseState)); | |
64b39f4a NJ |
7681 | } else if (lease->state == SMB2_LEASE_READ_CACHING_LE && |
7682 | req->LeaseState != SMB2_LEASE_NONE_LE) { | |
e2f34481 NJ |
7683 | err = STATUS_INVALID_OPLOCK_PROTOCOL; |
7684 | lease_change_type = OPLOCK_READ_TO_NONE; | |
7685 | ksmbd_debug(OPLOCK, "handle bad lease state 0x%x -> 0x%x\n", | |
070fb21e NJ |
7686 | le32_to_cpu(lease->state), |
7687 | le32_to_cpu(req->LeaseState)); | |
e2f34481 NJ |
7688 | } else { |
7689 | /* valid lease state changes */ | |
7690 | err = STATUS_INVALID_DEVICE_STATE; | |
7691 | if (req->LeaseState == SMB2_LEASE_NONE_LE) { | |
7692 | if (lease->state & SMB2_LEASE_WRITE_CACHING_LE) | |
7693 | lease_change_type = OPLOCK_WRITE_TO_NONE; | |
7694 | else | |
7695 | lease_change_type = OPLOCK_READ_TO_NONE; | |
7696 | } else if (req->LeaseState & SMB2_LEASE_READ_CACHING_LE) { | |
7697 | if (lease->state & SMB2_LEASE_WRITE_CACHING_LE) | |
7698 | lease_change_type = OPLOCK_WRITE_TO_READ; | |
7699 | else | |
7700 | lease_change_type = OPLOCK_READ_HANDLE_TO_READ; | |
64b39f4a | 7701 | } else { |
e2f34481 | 7702 | lease_change_type = 0; |
64b39f4a | 7703 | } |
e2f34481 NJ |
7704 | } |
7705 | ||
7706 | switch (lease_change_type) { | |
7707 | case OPLOCK_WRITE_TO_READ: | |
7708 | ret = opinfo_write_to_read(opinfo); | |
7709 | break; | |
7710 | case OPLOCK_READ_HANDLE_TO_READ: | |
7711 | ret = opinfo_read_handle_to_read(opinfo); | |
7712 | break; | |
7713 | case OPLOCK_WRITE_TO_NONE: | |
7714 | ret = opinfo_write_to_none(opinfo); | |
7715 | break; | |
7716 | case OPLOCK_READ_TO_NONE: | |
7717 | ret = opinfo_read_to_none(opinfo); | |
7718 | break; | |
7719 | default: | |
7720 | ksmbd_debug(OPLOCK, "unknown lease change 0x%x -> 0x%x\n", | |
070fb21e NJ |
7721 | le32_to_cpu(lease->state), |
7722 | le32_to_cpu(req->LeaseState)); | |
e2f34481 NJ |
7723 | } |
7724 | ||
7725 | lease_state = lease->state; | |
7726 | opinfo->op_state = OPLOCK_STATE_NONE; | |
7727 | wake_up_interruptible_all(&opinfo->oplock_q); | |
7728 | atomic_dec(&opinfo->breaking_cnt); | |
7729 | wake_up_interruptible_all(&opinfo->oplock_brk); | |
7730 | opinfo_put(opinfo); | |
7731 | ||
7732 | if (ret < 0) { | |
7733 | rsp->hdr.Status = err; | |
7734 | goto err_out; | |
7735 | } | |
7736 | ||
7737 | rsp->StructureSize = cpu_to_le16(36); | |
7738 | rsp->Reserved = 0; | |
7739 | rsp->Flags = 0; | |
7740 | memcpy(rsp->LeaseKey, req->LeaseKey, 16); | |
7741 | rsp->LeaseState = lease_state; | |
7742 | rsp->LeaseDuration = 0; | |
7743 | inc_rfc1001_len(rsp, 36); | |
7744 | return; | |
7745 | ||
7746 | err_out: | |
7747 | opinfo->op_state = OPLOCK_STATE_NONE; | |
7748 | wake_up_interruptible_all(&opinfo->oplock_q); | |
7749 | atomic_dec(&opinfo->breaking_cnt); | |
7750 | wake_up_interruptible_all(&opinfo->oplock_brk); | |
7751 | ||
7752 | opinfo_put(opinfo); | |
7753 | smb2_set_err_rsp(work); | |
7754 | } | |
7755 | ||
7756 | /** | |
7757 | * smb2_oplock_break() - dispatcher for smb2.0 and 2.1 oplock/lease break | |
7758 | * @work: smb work containing oplock/lease break command buffer | |
7759 | * | |
7760 | * Return: 0 | |
7761 | */ | |
7762 | int smb2_oplock_break(struct ksmbd_work *work) | |
7763 | { | |
e5066499 NJ |
7764 | struct smb2_oplock_break *req = work->request_buf; |
7765 | struct smb2_oplock_break *rsp = work->response_buf; | |
e2f34481 NJ |
7766 | |
7767 | switch (le16_to_cpu(req->StructureSize)) { | |
7768 | case OP_BREAK_STRUCT_SIZE_20: | |
7769 | smb20_oplock_break_ack(work); | |
7770 | break; | |
7771 | case OP_BREAK_STRUCT_SIZE_21: | |
7772 | smb21_lease_break_ack(work); | |
7773 | break; | |
7774 | default: | |
7775 | ksmbd_debug(OPLOCK, "invalid break cmd %d\n", | |
070fb21e | 7776 | le16_to_cpu(req->StructureSize)); |
e2f34481 NJ |
7777 | rsp->hdr.Status = STATUS_INVALID_PARAMETER; |
7778 | smb2_set_err_rsp(work); | |
7779 | } | |
7780 | ||
7781 | return 0; | |
7782 | } | |
7783 | ||
7784 | /** | |
7785 | * smb2_notify() - handler for smb2 notify request | |
95fa1ce9 | 7786 | * @work: smb work containing notify command buffer |
e2f34481 NJ |
7787 | * |
7788 | * Return: 0 | |
7789 | */ | |
7790 | int smb2_notify(struct ksmbd_work *work) | |
7791 | { | |
7792 | struct smb2_notify_req *req; | |
7793 | struct smb2_notify_rsp *rsp; | |
7794 | ||
7795 | WORK_BUFFERS(work, req, rsp); | |
7796 | ||
7797 | if (work->next_smb2_rcv_hdr_off && req->hdr.NextCommand) { | |
7798 | rsp->hdr.Status = STATUS_INTERNAL_ERROR; | |
7799 | smb2_set_err_rsp(work); | |
7800 | return 0; | |
7801 | } | |
7802 | ||
7803 | smb2_set_err_rsp(work); | |
7804 | rsp->hdr.Status = STATUS_NOT_IMPLEMENTED; | |
7805 | return 0; | |
7806 | } | |
7807 | ||
7808 | /** | |
7809 | * smb2_is_sign_req() - handler for checking packet signing status | |
95fa1ce9 HL |
7810 | * @work: smb work containing notify command buffer |
7811 | * @command: SMB2 command id | |
e2f34481 NJ |
7812 | * |
7813 | * Return: true if packed is signed, false otherwise | |
7814 | */ | |
7815 | bool smb2_is_sign_req(struct ksmbd_work *work, unsigned int command) | |
7816 | { | |
e5066499 | 7817 | struct smb2_hdr *rcv_hdr2 = work->request_buf; |
e2f34481 NJ |
7818 | |
7819 | if ((rcv_hdr2->Flags & SMB2_FLAGS_SIGNED) && | |
64b39f4a NJ |
7820 | command != SMB2_NEGOTIATE_HE && |
7821 | command != SMB2_SESSION_SETUP_HE && | |
7822 | command != SMB2_OPLOCK_BREAK_HE) | |
e2f34481 NJ |
7823 | return true; |
7824 | ||
5616015f | 7825 | return false; |
e2f34481 NJ |
7826 | } |
7827 | ||
7828 | /** | |
7829 | * smb2_check_sign_req() - handler for req packet sign processing | |
7830 | * @work: smb work containing notify command buffer | |
7831 | * | |
7832 | * Return: 1 on success, 0 otherwise | |
7833 | */ | |
7834 | int smb2_check_sign_req(struct ksmbd_work *work) | |
7835 | { | |
7836 | struct smb2_hdr *hdr, *hdr_org; | |
7837 | char signature_req[SMB2_SIGNATURE_SIZE]; | |
7838 | char signature[SMB2_HMACSHA256_SIZE]; | |
7839 | struct kvec iov[1]; | |
7840 | size_t len; | |
7841 | ||
e5066499 | 7842 | hdr_org = hdr = work->request_buf; |
e2f34481 NJ |
7843 | if (work->next_smb2_rcv_hdr_off) |
7844 | hdr = REQUEST_BUF_NEXT(work); | |
7845 | ||
7846 | if (!hdr->NextCommand && !work->next_smb2_rcv_hdr_off) | |
7847 | len = be32_to_cpu(hdr_org->smb2_buf_length); | |
7848 | else if (hdr->NextCommand) | |
7849 | len = le32_to_cpu(hdr->NextCommand); | |
7850 | else | |
7851 | len = be32_to_cpu(hdr_org->smb2_buf_length) - | |
7852 | work->next_smb2_rcv_hdr_off; | |
7853 | ||
7854 | memcpy(signature_req, hdr->Signature, SMB2_SIGNATURE_SIZE); | |
7855 | memset(hdr->Signature, 0, SMB2_SIGNATURE_SIZE); | |
7856 | ||
7857 | iov[0].iov_base = (char *)&hdr->ProtocolId; | |
7858 | iov[0].iov_len = len; | |
7859 | ||
7860 | if (ksmbd_sign_smb2_pdu(work->conn, work->sess->sess_key, iov, 1, | |
64b39f4a | 7861 | signature)) |
e2f34481 NJ |
7862 | return 0; |
7863 | ||
7864 | if (memcmp(signature, signature_req, SMB2_SIGNATURE_SIZE)) { | |
bde1694a | 7865 | pr_err("bad smb2 signature\n"); |
e2f34481 NJ |
7866 | return 0; |
7867 | } | |
7868 | ||
7869 | return 1; | |
7870 | } | |
7871 | ||
7872 | /** | |
7873 | * smb2_set_sign_rsp() - handler for rsp packet sign processing | |
7874 | * @work: smb work containing notify command buffer | |
7875 | * | |
7876 | */ | |
7877 | void smb2_set_sign_rsp(struct ksmbd_work *work) | |
7878 | { | |
7879 | struct smb2_hdr *hdr, *hdr_org; | |
7880 | struct smb2_hdr *req_hdr; | |
7881 | char signature[SMB2_HMACSHA256_SIZE]; | |
7882 | struct kvec iov[2]; | |
7883 | size_t len; | |
7884 | int n_vec = 1; | |
7885 | ||
e5066499 | 7886 | hdr_org = hdr = work->response_buf; |
e2f34481 NJ |
7887 | if (work->next_smb2_rsp_hdr_off) |
7888 | hdr = RESPONSE_BUF_NEXT(work); | |
7889 | ||
7890 | req_hdr = REQUEST_BUF_NEXT(work); | |
7891 | ||
7892 | if (!work->next_smb2_rsp_hdr_off) { | |
7893 | len = get_rfc1002_len(hdr_org); | |
7894 | if (req_hdr->NextCommand) | |
7895 | len = ALIGN(len, 8); | |
7896 | } else { | |
7897 | len = get_rfc1002_len(hdr_org) - work->next_smb2_rsp_hdr_off; | |
7898 | len = ALIGN(len, 8); | |
7899 | } | |
7900 | ||
7901 | if (req_hdr->NextCommand) | |
7902 | hdr->NextCommand = cpu_to_le32(len); | |
7903 | ||
7904 | hdr->Flags |= SMB2_FLAGS_SIGNED; | |
7905 | memset(hdr->Signature, 0, SMB2_SIGNATURE_SIZE); | |
7906 | ||
7907 | iov[0].iov_base = (char *)&hdr->ProtocolId; | |
7908 | iov[0].iov_len = len; | |
7909 | ||
e5066499 NJ |
7910 | if (work->aux_payload_sz) { |
7911 | iov[0].iov_len -= work->aux_payload_sz; | |
e2f34481 | 7912 | |
e5066499 NJ |
7913 | iov[1].iov_base = work->aux_payload_buf; |
7914 | iov[1].iov_len = work->aux_payload_sz; | |
e2f34481 NJ |
7915 | n_vec++; |
7916 | } | |
7917 | ||
7918 | if (!ksmbd_sign_smb2_pdu(work->conn, work->sess->sess_key, iov, n_vec, | |
64b39f4a | 7919 | signature)) |
e2f34481 NJ |
7920 | memcpy(hdr->Signature, signature, SMB2_SIGNATURE_SIZE); |
7921 | } | |
7922 | ||
7923 | /** | |
7924 | * smb3_check_sign_req() - handler for req packet sign processing | |
7925 | * @work: smb work containing notify command buffer | |
7926 | * | |
7927 | * Return: 1 on success, 0 otherwise | |
7928 | */ | |
7929 | int smb3_check_sign_req(struct ksmbd_work *work) | |
7930 | { | |
f5a544e3 | 7931 | struct ksmbd_conn *conn = work->conn; |
e2f34481 NJ |
7932 | char *signing_key; |
7933 | struct smb2_hdr *hdr, *hdr_org; | |
7934 | struct channel *chann; | |
7935 | char signature_req[SMB2_SIGNATURE_SIZE]; | |
7936 | char signature[SMB2_CMACAES_SIZE]; | |
7937 | struct kvec iov[1]; | |
7938 | size_t len; | |
7939 | ||
e5066499 | 7940 | hdr_org = hdr = work->request_buf; |
e2f34481 NJ |
7941 | if (work->next_smb2_rcv_hdr_off) |
7942 | hdr = REQUEST_BUF_NEXT(work); | |
7943 | ||
7944 | if (!hdr->NextCommand && !work->next_smb2_rcv_hdr_off) | |
7945 | len = be32_to_cpu(hdr_org->smb2_buf_length); | |
7946 | else if (hdr->NextCommand) | |
7947 | len = le32_to_cpu(hdr->NextCommand); | |
7948 | else | |
7949 | len = be32_to_cpu(hdr_org->smb2_buf_length) - | |
7950 | work->next_smb2_rcv_hdr_off; | |
7951 | ||
7952 | if (le16_to_cpu(hdr->Command) == SMB2_SESSION_SETUP_HE) { | |
7953 | signing_key = work->sess->smb3signingkey; | |
e2f34481 | 7954 | } else { |
f5a544e3 | 7955 | chann = lookup_chann_list(work->sess, conn); |
e2f34481 NJ |
7956 | if (!chann) |
7957 | return 0; | |
7958 | signing_key = chann->smb3signingkey; | |
e2f34481 NJ |
7959 | } |
7960 | ||
7961 | if (!signing_key) { | |
bde1694a | 7962 | pr_err("SMB3 signing key is not generated\n"); |
e2f34481 NJ |
7963 | return 0; |
7964 | } | |
7965 | ||
7966 | memcpy(signature_req, hdr->Signature, SMB2_SIGNATURE_SIZE); | |
7967 | memset(hdr->Signature, 0, SMB2_SIGNATURE_SIZE); | |
7968 | iov[0].iov_base = (char *)&hdr->ProtocolId; | |
7969 | iov[0].iov_len = len; | |
7970 | ||
7971 | if (ksmbd_sign_smb3_pdu(conn, signing_key, iov, 1, signature)) | |
7972 | return 0; | |
7973 | ||
7974 | if (memcmp(signature, signature_req, SMB2_SIGNATURE_SIZE)) { | |
bde1694a | 7975 | pr_err("bad smb2 signature\n"); |
e2f34481 NJ |
7976 | return 0; |
7977 | } | |
7978 | ||
7979 | return 1; | |
7980 | } | |
7981 | ||
7982 | /** | |
7983 | * smb3_set_sign_rsp() - handler for rsp packet sign processing | |
7984 | * @work: smb work containing notify command buffer | |
7985 | * | |
7986 | */ | |
7987 | void smb3_set_sign_rsp(struct ksmbd_work *work) | |
7988 | { | |
f5a544e3 | 7989 | struct ksmbd_conn *conn = work->conn; |
e2f34481 NJ |
7990 | struct smb2_hdr *req_hdr; |
7991 | struct smb2_hdr *hdr, *hdr_org; | |
7992 | struct channel *chann; | |
7993 | char signature[SMB2_CMACAES_SIZE]; | |
7994 | struct kvec iov[2]; | |
7995 | int n_vec = 1; | |
7996 | size_t len; | |
7997 | char *signing_key; | |
7998 | ||
e5066499 | 7999 | hdr_org = hdr = work->response_buf; |
e2f34481 NJ |
8000 | if (work->next_smb2_rsp_hdr_off) |
8001 | hdr = RESPONSE_BUF_NEXT(work); | |
8002 | ||
8003 | req_hdr = REQUEST_BUF_NEXT(work); | |
8004 | ||
8005 | if (!work->next_smb2_rsp_hdr_off) { | |
8006 | len = get_rfc1002_len(hdr_org); | |
8007 | if (req_hdr->NextCommand) | |
8008 | len = ALIGN(len, 8); | |
8009 | } else { | |
8010 | len = get_rfc1002_len(hdr_org) - work->next_smb2_rsp_hdr_off; | |
8011 | len = ALIGN(len, 8); | |
8012 | } | |
8013 | ||
8014 | if (le16_to_cpu(hdr->Command) == SMB2_SESSION_SETUP_HE) { | |
8015 | signing_key = work->sess->smb3signingkey; | |
e2f34481 | 8016 | } else { |
f5a544e3 | 8017 | chann = lookup_chann_list(work->sess, work->conn); |
e2f34481 NJ |
8018 | if (!chann) |
8019 | return; | |
8020 | signing_key = chann->smb3signingkey; | |
e2f34481 NJ |
8021 | } |
8022 | ||
8023 | if (!signing_key) | |
8024 | return; | |
8025 | ||
8026 | if (req_hdr->NextCommand) | |
8027 | hdr->NextCommand = cpu_to_le32(len); | |
8028 | ||
8029 | hdr->Flags |= SMB2_FLAGS_SIGNED; | |
8030 | memset(hdr->Signature, 0, SMB2_SIGNATURE_SIZE); | |
8031 | iov[0].iov_base = (char *)&hdr->ProtocolId; | |
8032 | iov[0].iov_len = len; | |
e5066499 NJ |
8033 | if (work->aux_payload_sz) { |
8034 | iov[0].iov_len -= work->aux_payload_sz; | |
8035 | iov[1].iov_base = work->aux_payload_buf; | |
8036 | iov[1].iov_len = work->aux_payload_sz; | |
e2f34481 NJ |
8037 | n_vec++; |
8038 | } | |
8039 | ||
8040 | if (!ksmbd_sign_smb3_pdu(conn, signing_key, iov, n_vec, signature)) | |
8041 | memcpy(hdr->Signature, signature, SMB2_SIGNATURE_SIZE); | |
8042 | } | |
8043 | ||
8044 | /** | |
8045 | * smb3_preauth_hash_rsp() - handler for computing preauth hash on response | |
8046 | * @work: smb work containing response buffer | |
8047 | * | |
8048 | */ | |
8049 | void smb3_preauth_hash_rsp(struct ksmbd_work *work) | |
8050 | { | |
8051 | struct ksmbd_conn *conn = work->conn; | |
8052 | struct ksmbd_session *sess = work->sess; | |
8053 | struct smb2_hdr *req, *rsp; | |
8054 | ||
8055 | if (conn->dialect != SMB311_PROT_ID) | |
8056 | return; | |
8057 | ||
8058 | WORK_BUFFERS(work, req, rsp); | |
8059 | ||
8060 | if (le16_to_cpu(req->Command) == SMB2_NEGOTIATE_HE) | |
8061 | ksmbd_gen_preauth_integrity_hash(conn, (char *)rsp, | |
070fb21e | 8062 | conn->preauth_info->Preauth_HashValue); |
e2f34481 | 8063 | |
f5a544e3 | 8064 | if (le16_to_cpu(rsp->Command) == SMB2_SESSION_SETUP_HE && sess) { |
e2f34481 NJ |
8065 | __u8 *hash_value; |
8066 | ||
f5a544e3 NJ |
8067 | if (conn->binding) { |
8068 | struct preauth_session *preauth_sess; | |
8069 | ||
8070 | preauth_sess = ksmbd_preauth_session_lookup(conn, sess->id); | |
8071 | if (!preauth_sess) | |
8072 | return; | |
8073 | hash_value = preauth_sess->Preauth_HashValue; | |
8074 | } else { | |
8075 | hash_value = sess->Preauth_HashValue; | |
8076 | if (!hash_value) | |
8077 | return; | |
8078 | } | |
e2f34481 | 8079 | ksmbd_gen_preauth_integrity_hash(conn, (char *)rsp, |
070fb21e | 8080 | hash_value); |
e2f34481 NJ |
8081 | } |
8082 | } | |
8083 | ||
64b39f4a | 8084 | static void fill_transform_hdr(struct smb2_transform_hdr *tr_hdr, char *old_buf, |
070fb21e | 8085 | __le16 cipher_type) |
e2f34481 NJ |
8086 | { |
8087 | struct smb2_hdr *hdr = (struct smb2_hdr *)old_buf; | |
8088 | unsigned int orig_len = get_rfc1002_len(old_buf); | |
8089 | ||
8090 | memset(tr_hdr, 0, sizeof(struct smb2_transform_hdr)); | |
8091 | tr_hdr->ProtocolId = SMB2_TRANSFORM_PROTO_NUM; | |
8092 | tr_hdr->OriginalMessageSize = cpu_to_le32(orig_len); | |
8093 | tr_hdr->Flags = cpu_to_le16(0x01); | |
5a0ca770 NJ |
8094 | if (cipher_type == SMB2_ENCRYPTION_AES128_GCM || |
8095 | cipher_type == SMB2_ENCRYPTION_AES256_GCM) | |
8096 | get_random_bytes(&tr_hdr->Nonce, SMB3_AES_GCM_NONCE); | |
e2f34481 | 8097 | else |
5a0ca770 | 8098 | get_random_bytes(&tr_hdr->Nonce, SMB3_AES_CCM_NONCE); |
e2f34481 NJ |
8099 | memcpy(&tr_hdr->SessionId, &hdr->SessionId, 8); |
8100 | inc_rfc1001_len(tr_hdr, sizeof(struct smb2_transform_hdr) - 4); | |
8101 | inc_rfc1001_len(tr_hdr, orig_len); | |
8102 | } | |
8103 | ||
8104 | int smb3_encrypt_resp(struct ksmbd_work *work) | |
8105 | { | |
e5066499 | 8106 | char *buf = work->response_buf; |
e2f34481 NJ |
8107 | struct smb2_transform_hdr *tr_hdr; |
8108 | struct kvec iov[3]; | |
8109 | int rc = -ENOMEM; | |
e5066499 | 8110 | int buf_size = 0, rq_nvec = 2 + (work->aux_payload_sz ? 1 : 0); |
e2f34481 NJ |
8111 | |
8112 | if (ARRAY_SIZE(iov) < rq_nvec) | |
8113 | return -ENOMEM; | |
8114 | ||
20ea7fd2 | 8115 | tr_hdr = kzalloc(sizeof(struct smb2_transform_hdr), GFP_KERNEL); |
e2f34481 NJ |
8116 | if (!tr_hdr) |
8117 | return rc; | |
8118 | ||
8119 | /* fill transform header */ | |
8120 | fill_transform_hdr(tr_hdr, buf, work->conn->cipher_type); | |
8121 | ||
8122 | iov[0].iov_base = tr_hdr; | |
8123 | iov[0].iov_len = sizeof(struct smb2_transform_hdr); | |
8124 | buf_size += iov[0].iov_len - 4; | |
8125 | ||
8126 | iov[1].iov_base = buf + 4; | |
8127 | iov[1].iov_len = get_rfc1002_len(buf); | |
e5066499 NJ |
8128 | if (work->aux_payload_sz) { |
8129 | iov[1].iov_len = work->resp_hdr_sz - 4; | |
e2f34481 | 8130 | |
e5066499 NJ |
8131 | iov[2].iov_base = work->aux_payload_buf; |
8132 | iov[2].iov_len = work->aux_payload_sz; | |
e2f34481 NJ |
8133 | buf_size += iov[2].iov_len; |
8134 | } | |
8135 | buf_size += iov[1].iov_len; | |
8136 | work->resp_hdr_sz = iov[1].iov_len; | |
8137 | ||
8138 | rc = ksmbd_crypt_message(work->conn, iov, rq_nvec, 1); | |
8139 | if (rc) | |
8140 | return rc; | |
8141 | ||
8142 | memmove(buf, iov[1].iov_base, iov[1].iov_len); | |
8143 | tr_hdr->smb2_buf_length = cpu_to_be32(buf_size); | |
8144 | work->tr_buf = tr_hdr; | |
8145 | ||
8146 | return rc; | |
8147 | } | |
8148 | ||
8149 | int smb3_is_transform_hdr(void *buf) | |
8150 | { | |
8151 | struct smb2_transform_hdr *trhdr = buf; | |
8152 | ||
8153 | return trhdr->ProtocolId == SMB2_TRANSFORM_PROTO_NUM; | |
8154 | } | |
8155 | ||
8156 | int smb3_decrypt_req(struct ksmbd_work *work) | |
8157 | { | |
8158 | struct ksmbd_conn *conn = work->conn; | |
8159 | struct ksmbd_session *sess; | |
e5066499 | 8160 | char *buf = work->request_buf; |
e2f34481 NJ |
8161 | struct smb2_hdr *hdr; |
8162 | unsigned int pdu_length = get_rfc1002_len(buf); | |
8163 | struct kvec iov[2]; | |
8164 | unsigned int buf_data_size = pdu_length + 4 - | |
8165 | sizeof(struct smb2_transform_hdr); | |
8166 | struct smb2_transform_hdr *tr_hdr = (struct smb2_transform_hdr *)buf; | |
8167 | unsigned int orig_len = le32_to_cpu(tr_hdr->OriginalMessageSize); | |
8168 | int rc = 0; | |
8169 | ||
f5a544e3 | 8170 | sess = ksmbd_session_lookup_all(conn, le64_to_cpu(tr_hdr->SessionId)); |
e2f34481 | 8171 | if (!sess) { |
bde1694a NJ |
8172 | pr_err("invalid session id(%llx) in transform header\n", |
8173 | le64_to_cpu(tr_hdr->SessionId)); | |
e2f34481 NJ |
8174 | return -ECONNABORTED; |
8175 | } | |
8176 | ||
070fb21e NJ |
8177 | if (pdu_length + 4 < |
8178 | sizeof(struct smb2_transform_hdr) + sizeof(struct smb2_hdr)) { | |
bde1694a NJ |
8179 | pr_err("Transform message is too small (%u)\n", |
8180 | pdu_length); | |
e2f34481 NJ |
8181 | return -ECONNABORTED; |
8182 | } | |
8183 | ||
8184 | if (pdu_length + 4 < orig_len + sizeof(struct smb2_transform_hdr)) { | |
bde1694a | 8185 | pr_err("Transform message is broken\n"); |
e2f34481 NJ |
8186 | return -ECONNABORTED; |
8187 | } | |
8188 | ||
8189 | iov[0].iov_base = buf; | |
8190 | iov[0].iov_len = sizeof(struct smb2_transform_hdr); | |
8191 | iov[1].iov_base = buf + sizeof(struct smb2_transform_hdr); | |
8192 | iov[1].iov_len = buf_data_size; | |
8193 | rc = ksmbd_crypt_message(conn, iov, 2, 0); | |
8194 | if (rc) | |
8195 | return rc; | |
8196 | ||
8197 | memmove(buf + 4, iov[1].iov_base, buf_data_size); | |
8198 | hdr = (struct smb2_hdr *)buf; | |
8199 | hdr->smb2_buf_length = cpu_to_be32(buf_data_size); | |
8200 | ||
8201 | return rc; | |
8202 | } | |
8203 | ||
8204 | bool smb3_11_final_sess_setup_resp(struct ksmbd_work *work) | |
8205 | { | |
8206 | struct ksmbd_conn *conn = work->conn; | |
e5066499 | 8207 | struct smb2_hdr *rsp = work->response_buf; |
e2f34481 NJ |
8208 | |
8209 | if (conn->dialect < SMB30_PROT_ID) | |
8210 | return false; | |
8211 | ||
8212 | if (work->next_smb2_rcv_hdr_off) | |
8213 | rsp = RESPONSE_BUF_NEXT(work); | |
8214 | ||
8215 | if (le16_to_cpu(rsp->Command) == SMB2_SESSION_SETUP_HE && | |
64b39f4a | 8216 | rsp->Status == STATUS_SUCCESS) |
e2f34481 NJ |
8217 | return true; |
8218 | return false; | |
8219 | } |