Commit | Line | Data |
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929be906 | 1 | // SPDX-License-Identifier: LGPL-2.1 |
1da177e4 | 2 | /* |
1da177e4 | 3 | * |
f19159dc | 4 | * Copyright (C) International Business Machines Corp., 2002,2010 |
1da177e4 LT |
5 | * Author(s): Steve French (sfrench@us.ibm.com) |
6 | * | |
7 | * Contains the routines for constructing the SMB PDUs themselves | |
8 | * | |
1da177e4 LT |
9 | */ |
10 | ||
11 | /* SMB/CIFS PDU handling routines here - except for leftovers in connect.c */ | |
12 | /* These are mostly routines that operate on a pathname, or on a tree id */ | |
13 | /* (mounted volume), but there are eight handle based routines which must be */ | |
2dd29d31 SF |
14 | /* treated slightly differently for reconnection purposes since we never */ |
15 | /* want to reuse a stale file handle and only the caller knows the file info */ | |
1da177e4 LT |
16 | |
17 | #include <linux/fs.h> | |
5970e15d | 18 | #include <linux/filelock.h> |
1da177e4 LT |
19 | #include <linux/kernel.h> |
20 | #include <linux/vfs.h> | |
5a0e3ad6 | 21 | #include <linux/slab.h> |
1da177e4 | 22 | #include <linux/posix_acl_xattr.h> |
c28c89fc | 23 | #include <linux/pagemap.h> |
e28bc5b1 JL |
24 | #include <linux/swap.h> |
25 | #include <linux/task_io_accounting_ops.h> | |
7c0f6ba6 | 26 | #include <linux/uaccess.h> |
1da177e4 | 27 | #include "cifspdu.h" |
d08089f6 | 28 | #include "cifsfs.h" |
1da177e4 | 29 | #include "cifsglob.h" |
d0d66c44 | 30 | #include "cifsacl.h" |
1da177e4 LT |
31 | #include "cifsproto.h" |
32 | #include "cifs_unicode.h" | |
33 | #include "cifs_debug.h" | |
e28bc5b1 | 34 | #include "fscache.h" |
db223a59 | 35 | #include "smbdirect.h" |
08744015 PA |
36 | #ifdef CONFIG_CIFS_DFS_UPCALL |
37 | #include "dfs_cache.h" | |
38 | #endif | |
1da177e4 LT |
39 | |
40 | #ifdef CONFIG_CIFS_POSIX | |
41 | static struct { | |
42 | int index; | |
43 | char *name; | |
44 | } protocols[] = { | |
50c2f753 | 45 | {CIFS_PROT, "\2NT LM 0.12"}, |
3979877e | 46 | {POSIX_PROT, "\2POSIX 2"}, |
1da177e4 LT |
47 | {BAD_PROT, "\2"} |
48 | }; | |
49 | #else | |
50 | static struct { | |
51 | int index; | |
52 | char *name; | |
53 | } protocols[] = { | |
790fe579 | 54 | {CIFS_PROT, "\2NT LM 0.12"}, |
1da177e4 LT |
55 | {BAD_PROT, "\2"} |
56 | }; | |
57 | #endif | |
58 | ||
3979877e SF |
59 | /* define the number of elements in the cifs dialect array */ |
60 | #ifdef CONFIG_CIFS_POSIX | |
3979877e | 61 | #define CIFS_NUM_PROT 2 |
3979877e | 62 | #else /* not posix */ |
3979877e | 63 | #define CIFS_NUM_PROT 1 |
3979877e SF |
64 | #endif /* CIFS_POSIX */ |
65 | ||
1da177e4 | 66 | |
9162ab20 JL |
67 | /* reconnect the socket, tcon, and smb session if needed */ |
68 | static int | |
96daf2b0 | 69 | cifs_reconnect_tcon(struct cifs_tcon *tcon, int smb_command) |
9162ab20 | 70 | { |
c4a5534a | 71 | int rc; |
96daf2b0 | 72 | struct cifs_ses *ses; |
9162ab20 | 73 | struct TCP_Server_Info *server; |
6cc041e9 | 74 | struct nls_table *nls_codepage = NULL; |
9162ab20 JL |
75 | |
76 | /* | |
77 | * SMBs NegProt, SessSetup, uLogoff do not have tcon yet so check for | |
78 | * tcp and smb session status done differently for those three - in the | |
79 | * calling routine | |
80 | */ | |
81 | if (!tcon) | |
82 | return 0; | |
83 | ||
84 | ses = tcon->ses; | |
85 | server = ses->server; | |
86 | ||
87 | /* | |
88 | * only tree disconnect, open, and write, (and ulogoff which does not | |
491eafce | 89 | * have tcon) are allowed as we start umount |
9162ab20 | 90 | */ |
d7d7a66a | 91 | spin_lock(&tcon->tc_lock); |
fdf59eb5 | 92 | if (tcon->status == TID_EXITING) { |
491eafce | 93 | if (smb_command != SMB_COM_TREE_DISCONNECT) { |
d7d7a66a | 94 | spin_unlock(&tcon->tc_lock); |
f96637be JP |
95 | cifs_dbg(FYI, "can not send cmd %d while umounting\n", |
96 | smb_command); | |
9162ab20 JL |
97 | return -ENODEV; |
98 | } | |
99 | } | |
d7d7a66a | 100 | spin_unlock(&tcon->tc_lock); |
9162ab20 | 101 | |
6cc041e9 | 102 | again: |
1bcd548d PA |
103 | rc = cifs_wait_for_server_reconnect(server, tcon->retry); |
104 | if (rc) | |
105 | return rc; | |
9162ab20 | 106 | |
d1a931ce SP |
107 | spin_lock(&ses->chan_lock); |
108 | if (!cifs_chan_needs_reconnect(ses, server) && !tcon->need_reconnect) { | |
109 | spin_unlock(&ses->chan_lock); | |
9162ab20 | 110 | return 0; |
d1a931ce SP |
111 | } |
112 | spin_unlock(&ses->chan_lock); | |
9162ab20 | 113 | |
6cc041e9 | 114 | mutex_lock(&ses->session_mutex); |
76e75270 SC |
115 | /* |
116 | * Recheck after acquire mutex. If another thread is negotiating | |
117 | * and the server never sends an answer the socket will be closed | |
118 | * and tcpStatus set to reconnect. | |
119 | */ | |
d7d7a66a | 120 | spin_lock(&server->srv_lock); |
76e75270 | 121 | if (server->tcpStatus == CifsNeedReconnect) { |
d7d7a66a | 122 | spin_unlock(&server->srv_lock); |
4f5d5b33 | 123 | mutex_unlock(&ses->session_mutex); |
6cc041e9 PA |
124 | |
125 | if (tcon->retry) | |
126 | goto again; | |
76e75270 | 127 | rc = -EHOSTDOWN; |
76e75270 SC |
128 | goto out; |
129 | } | |
d7d7a66a | 130 | spin_unlock(&server->srv_lock); |
76e75270 | 131 | |
6cc041e9 PA |
132 | nls_codepage = load_nls_default(); |
133 | ||
d1a931ce SP |
134 | /* |
135 | * need to prevent multiple threads trying to simultaneously | |
136 | * reconnect the same SMB session | |
137 | */ | |
6cc041e9 | 138 | spin_lock(&ses->ses_lock); |
d1a931ce | 139 | spin_lock(&ses->chan_lock); |
6cc041e9 PA |
140 | if (!cifs_chan_needs_reconnect(ses, server) && |
141 | ses->ses_status == SES_GOOD) { | |
d1a931ce | 142 | spin_unlock(&ses->chan_lock); |
6cc041e9 | 143 | spin_unlock(&ses->ses_lock); |
f486ef8e SP |
144 | |
145 | /* this means that we only need to tree connect */ | |
d1a931ce SP |
146 | if (tcon->need_reconnect) |
147 | goto skip_sess_setup; | |
148 | ||
6cc041e9 | 149 | mutex_unlock(&ses->session_mutex); |
d1a931ce SP |
150 | goto out; |
151 | } | |
152 | spin_unlock(&ses->chan_lock); | |
6cc041e9 | 153 | spin_unlock(&ses->ses_lock); |
d1a931ce | 154 | |
f486ef8e | 155 | rc = cifs_negotiate_protocol(0, ses, server); |
d1a931ce | 156 | if (!rc) |
f486ef8e | 157 | rc = cifs_setup_session(0, ses, server, nls_codepage); |
9162ab20 JL |
158 | |
159 | /* do we need to reconnect tcon? */ | |
160 | if (rc || !tcon->need_reconnect) { | |
d7b619cf | 161 | mutex_unlock(&ses->session_mutex); |
9162ab20 JL |
162 | goto out; |
163 | } | |
164 | ||
d1a931ce | 165 | skip_sess_setup: |
aa24d1e9 | 166 | cifs_mark_open_files_invalid(tcon); |
565674d6 | 167 | rc = cifs_tree_connect(0, tcon, nls_codepage); |
d7b619cf | 168 | mutex_unlock(&ses->session_mutex); |
f96637be | 169 | cifs_dbg(FYI, "reconnect tcon rc = %d\n", rc); |
9162ab20 | 170 | |
c318e6c2 | 171 | if (rc) { |
a0a3036b | 172 | pr_warn_once("reconnect tcon failed rc = %d\n", rc); |
9162ab20 | 173 | goto out; |
c318e6c2 | 174 | } |
9162ab20 | 175 | |
9162ab20 JL |
176 | atomic_inc(&tconInfoReconnectCount); |
177 | ||
178 | /* tell server Unix caps we support */ | |
864138cb | 179 | if (cap_unix(ses)) |
9162ab20 JL |
180 | reset_cifs_unix_caps(0, tcon, NULL, NULL); |
181 | ||
182 | /* | |
183 | * Removed call to reopen open files here. It is safer (and faster) to | |
184 | * reopen files one at a time as needed in read and write. | |
185 | * | |
186 | * FIXME: what about file locks? don't we need to reclaim them ASAP? | |
187 | */ | |
188 | ||
189 | out: | |
190 | /* | |
191 | * Check if handle based operation so we know whether we can continue | |
192 | * or not without returning to caller to reset file handle | |
193 | */ | |
194 | switch (smb_command) { | |
195 | case SMB_COM_READ_ANDX: | |
196 | case SMB_COM_WRITE_ANDX: | |
197 | case SMB_COM_CLOSE: | |
198 | case SMB_COM_FIND_CLOSE2: | |
199 | case SMB_COM_LOCKING_ANDX: | |
200 | rc = -EAGAIN; | |
201 | } | |
202 | ||
203 | unload_nls(nls_codepage); | |
204 | return rc; | |
205 | } | |
206 | ||
ad7a2926 SF |
207 | /* Allocate and return pointer to an SMB request buffer, and set basic |
208 | SMB information in the SMB header. If the return code is zero, this | |
209 | function must have filled in request_buf pointer */ | |
1da177e4 | 210 | static int |
96daf2b0 | 211 | small_smb_init(int smb_command, int wct, struct cifs_tcon *tcon, |
ad7a2926 | 212 | void **request_buf) |
1da177e4 | 213 | { |
f569599a | 214 | int rc; |
1da177e4 | 215 | |
9162ab20 | 216 | rc = cifs_reconnect_tcon(tcon, smb_command); |
790fe579 | 217 | if (rc) |
1da177e4 LT |
218 | return rc; |
219 | ||
220 | *request_buf = cifs_small_buf_get(); | |
221 | if (*request_buf == NULL) { | |
222 | /* BB should we add a retry in here if not a writepage? */ | |
223 | return -ENOMEM; | |
224 | } | |
225 | ||
63135e08 | 226 | header_assemble((struct smb_hdr *) *request_buf, smb_command, |
c18c842b | 227 | tcon, wct); |
1da177e4 | 228 | |
790fe579 SF |
229 | if (tcon != NULL) |
230 | cifs_stats_inc(&tcon->num_smbs_sent); | |
a4544347 | 231 | |
f569599a | 232 | return 0; |
5815449d SF |
233 | } |
234 | ||
12b3b8ff | 235 | int |
50c2f753 | 236 | small_smb_init_no_tc(const int smb_command, const int wct, |
96daf2b0 | 237 | struct cifs_ses *ses, void **request_buf) |
12b3b8ff SF |
238 | { |
239 | int rc; | |
50c2f753 | 240 | struct smb_hdr *buffer; |
12b3b8ff | 241 | |
5815449d | 242 | rc = small_smb_init(smb_command, wct, NULL, request_buf); |
790fe579 | 243 | if (rc) |
12b3b8ff SF |
244 | return rc; |
245 | ||
04fdabe1 | 246 | buffer = (struct smb_hdr *)*request_buf; |
88257360 | 247 | buffer->Mid = get_next_mid(ses->server); |
12b3b8ff SF |
248 | if (ses->capabilities & CAP_UNICODE) |
249 | buffer->Flags2 |= SMBFLG2_UNICODE; | |
04fdabe1 | 250 | if (ses->capabilities & CAP_STATUS32) |
12b3b8ff SF |
251 | buffer->Flags2 |= SMBFLG2_ERR_STATUS; |
252 | ||
253 | /* uid, tid can stay at zero as set in header assemble */ | |
254 | ||
50c2f753 | 255 | /* BB add support for turning on the signing when |
12b3b8ff SF |
256 | this function is used after 1st of session setup requests */ |
257 | ||
258 | return rc; | |
259 | } | |
1da177e4 LT |
260 | |
261 | /* If the return code is zero, this function must fill in request_buf pointer */ | |
262 | static int | |
96daf2b0 | 263 | __smb_init(int smb_command, int wct, struct cifs_tcon *tcon, |
f569599a | 264 | void **request_buf, void **response_buf) |
1da177e4 | 265 | { |
1da177e4 LT |
266 | *request_buf = cifs_buf_get(); |
267 | if (*request_buf == NULL) { | |
268 | /* BB should we add a retry in here if not a writepage? */ | |
269 | return -ENOMEM; | |
270 | } | |
271 | /* Although the original thought was we needed the response buf for */ | |
272 | /* potential retries of smb operations it turns out we can determine */ | |
273 | /* from the mid flags when the request buffer can be resent without */ | |
274 | /* having to use a second distinct buffer for the response */ | |
790fe579 | 275 | if (response_buf) |
50c2f753 | 276 | *response_buf = *request_buf; |
1da177e4 LT |
277 | |
278 | header_assemble((struct smb_hdr *) *request_buf, smb_command, tcon, | |
ad7a2926 | 279 | wct); |
1da177e4 | 280 | |
790fe579 SF |
281 | if (tcon != NULL) |
282 | cifs_stats_inc(&tcon->num_smbs_sent); | |
a4544347 | 283 | |
f569599a JL |
284 | return 0; |
285 | } | |
286 | ||
287 | /* If the return code is zero, this function must fill in request_buf pointer */ | |
288 | static int | |
96daf2b0 | 289 | smb_init(int smb_command, int wct, struct cifs_tcon *tcon, |
f569599a JL |
290 | void **request_buf, void **response_buf) |
291 | { | |
292 | int rc; | |
293 | ||
294 | rc = cifs_reconnect_tcon(tcon, smb_command); | |
295 | if (rc) | |
296 | return rc; | |
297 | ||
298 | return __smb_init(smb_command, wct, tcon, request_buf, response_buf); | |
299 | } | |
300 | ||
301 | static int | |
96daf2b0 | 302 | smb_init_no_reconnect(int smb_command, int wct, struct cifs_tcon *tcon, |
f569599a JL |
303 | void **request_buf, void **response_buf) |
304 | { | |
d1a931ce SP |
305 | spin_lock(&tcon->ses->chan_lock); |
306 | if (cifs_chan_needs_reconnect(tcon->ses, tcon->ses->server) || | |
307 | tcon->need_reconnect) { | |
308 | spin_unlock(&tcon->ses->chan_lock); | |
f569599a | 309 | return -EHOSTDOWN; |
d1a931ce SP |
310 | } |
311 | spin_unlock(&tcon->ses->chan_lock); | |
f569599a JL |
312 | |
313 | return __smb_init(smb_command, wct, tcon, request_buf, response_buf); | |
1da177e4 LT |
314 | } |
315 | ||
50c2f753 | 316 | static int validate_t2(struct smb_t2_rsp *pSMB) |
1da177e4 | 317 | { |
12df83c9 JL |
318 | unsigned int total_size; |
319 | ||
320 | /* check for plausible wct */ | |
321 | if (pSMB->hdr.WordCount < 10) | |
322 | goto vt2_err; | |
1da177e4 | 323 | |
1da177e4 | 324 | /* check for parm and data offset going beyond end of smb */ |
12df83c9 JL |
325 | if (get_unaligned_le16(&pSMB->t2_rsp.ParameterOffset) > 1024 || |
326 | get_unaligned_le16(&pSMB->t2_rsp.DataOffset) > 1024) | |
327 | goto vt2_err; | |
328 | ||
12df83c9 JL |
329 | total_size = get_unaligned_le16(&pSMB->t2_rsp.ParameterCount); |
330 | if (total_size >= 512) | |
331 | goto vt2_err; | |
332 | ||
fd5707e1 JL |
333 | /* check that bcc is at least as big as parms + data, and that it is |
334 | * less than negotiated smb buffer | |
335 | */ | |
12df83c9 JL |
336 | total_size += get_unaligned_le16(&pSMB->t2_rsp.DataCount); |
337 | if (total_size > get_bcc(&pSMB->hdr) || | |
338 | total_size >= CIFSMaxBufSize + MAX_CIFS_HDR_SIZE) | |
339 | goto vt2_err; | |
340 | ||
341 | return 0; | |
342 | vt2_err: | |
50c2f753 | 343 | cifs_dump_mem("Invalid transact2 SMB: ", (char *)pSMB, |
1da177e4 | 344 | sizeof(struct smb_t2_rsp) + 16); |
12df83c9 | 345 | return -EINVAL; |
1da177e4 | 346 | } |
690c522f | 347 | |
31d9e2bd | 348 | static int |
3f618223 | 349 | decode_ext_sec_blob(struct cifs_ses *ses, NEGOTIATE_RSP *pSMBr) |
31d9e2bd JL |
350 | { |
351 | int rc = 0; | |
352 | u16 count; | |
353 | char *guid = pSMBr->u.extended_response.GUID; | |
3f618223 | 354 | struct TCP_Server_Info *server = ses->server; |
31d9e2bd JL |
355 | |
356 | count = get_bcc(&pSMBr->hdr); | |
357 | if (count < SMB1_CLIENT_GUID_SIZE) | |
358 | return -EIO; | |
359 | ||
360 | spin_lock(&cifs_tcp_ses_lock); | |
361 | if (server->srv_count > 1) { | |
362 | spin_unlock(&cifs_tcp_ses_lock); | |
363 | if (memcmp(server->server_GUID, guid, SMB1_CLIENT_GUID_SIZE) != 0) { | |
364 | cifs_dbg(FYI, "server UID changed\n"); | |
365 | memcpy(server->server_GUID, guid, SMB1_CLIENT_GUID_SIZE); | |
366 | } | |
367 | } else { | |
368 | spin_unlock(&cifs_tcp_ses_lock); | |
369 | memcpy(server->server_GUID, guid, SMB1_CLIENT_GUID_SIZE); | |
370 | } | |
371 | ||
372 | if (count == SMB1_CLIENT_GUID_SIZE) { | |
3f618223 | 373 | server->sec_ntlmssp = true; |
31d9e2bd JL |
374 | } else { |
375 | count -= SMB1_CLIENT_GUID_SIZE; | |
376 | rc = decode_negTokenInit( | |
377 | pSMBr->u.extended_response.SecurityBlob, count, server); | |
378 | if (rc != 1) | |
379 | return -EINVAL; | |
31d9e2bd JL |
380 | } |
381 | ||
382 | return 0; | |
383 | } | |
384 | ||
9193400b | 385 | static bool |
3f618223 | 386 | should_set_ext_sec_flag(enum securityEnum sectype) |
9193400b | 387 | { |
3f618223 JL |
388 | switch (sectype) { |
389 | case RawNTLMSSP: | |
390 | case Kerberos: | |
9193400b | 391 | return true; |
3f618223 JL |
392 | case Unspecified: |
393 | if (global_secflags & | |
394 | (CIFSSEC_MAY_KRB5 | CIFSSEC_MAY_NTLMSSP)) | |
395 | return true; | |
df561f66 | 396 | fallthrough; |
3f618223 JL |
397 | default: |
398 | return false; | |
399 | } | |
9193400b JL |
400 | } |
401 | ||
1da177e4 | 402 | int |
f486ef8e SP |
403 | CIFSSMBNegotiate(const unsigned int xid, |
404 | struct cifs_ses *ses, | |
405 | struct TCP_Server_Info *server) | |
1da177e4 LT |
406 | { |
407 | NEGOTIATE_REQ *pSMB; | |
408 | NEGOTIATE_RSP *pSMBr; | |
409 | int rc = 0; | |
410 | int bytes_returned; | |
3979877e | 411 | int i; |
1da177e4 LT |
412 | u16 count; |
413 | ||
3534b850 JL |
414 | if (!server) { |
415 | WARN(1, "%s: server is NULL!\n", __func__); | |
416 | return -EIO; | |
1da177e4 | 417 | } |
3534b850 | 418 | |
1da177e4 LT |
419 | rc = smb_init(SMB_COM_NEGOTIATE, 0, NULL /* no tcon yet */ , |
420 | (void **) &pSMB, (void **) &pSMBr); | |
421 | if (rc) | |
422 | return rc; | |
750d1151 | 423 | |
88257360 | 424 | pSMB->hdr.Mid = get_next_mid(server); |
100c1ddc | 425 | pSMB->hdr.Flags2 |= (SMBFLG2_UNICODE | SMBFLG2_ERR_STATUS); |
a013689d | 426 | |
3f618223 | 427 | if (should_set_ext_sec_flag(ses->sectype)) { |
a0a3036b | 428 | cifs_dbg(FYI, "Requesting extended security\n"); |
ac683924 SF |
429 | pSMB->hdr.Flags2 |= SMBFLG2_EXT_SEC; |
430 | } | |
50c2f753 | 431 | |
3979877e | 432 | count = 0; |
bcfb84a9 SR |
433 | /* |
434 | * We know that all the name entries in the protocols array | |
435 | * are short (< 16 bytes anyway) and are NUL terminated. | |
436 | */ | |
50c2f753 | 437 | for (i = 0; i < CIFS_NUM_PROT; i++) { |
bcfb84a9 SR |
438 | size_t len = strlen(protocols[i].name) + 1; |
439 | ||
943deb60 | 440 | memcpy(&pSMB->DialectsArray[count], protocols[i].name, len); |
bcfb84a9 | 441 | count += len; |
3979877e | 442 | } |
be8e3b00 | 443 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
444 | pSMB->ByteCount = cpu_to_le16(count); |
445 | ||
446 | rc = SendReceive(xid, ses, (struct smb_hdr *) pSMB, | |
447 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
50c2f753 | 448 | if (rc != 0) |
254e55ed SF |
449 | goto neg_err_exit; |
450 | ||
9bf67e51 | 451 | server->dialect = le16_to_cpu(pSMBr->DialectIndex); |
f96637be | 452 | cifs_dbg(FYI, "Dialect: %d\n", server->dialect); |
254e55ed | 453 | /* Check wct = 1 error case */ |
76a3c92e | 454 | if ((pSMBr->hdr.WordCount <= 13) || (server->dialect == BAD_PROT)) { |
254e55ed | 455 | /* core returns wct = 1, but we do not ask for core - otherwise |
50c2f753 | 456 | small wct just comes when dialect index is -1 indicating we |
254e55ed SF |
457 | could not negotiate a common dialect */ |
458 | rc = -EOPNOTSUPP; | |
459 | goto neg_err_exit; | |
790fe579 | 460 | } else if (pSMBr->hdr.WordCount != 17) { |
254e55ed SF |
461 | /* unknown wct */ |
462 | rc = -EOPNOTSUPP; | |
463 | goto neg_err_exit; | |
464 | } | |
2190eca1 JL |
465 | /* else wct == 17, NTLM or better */ |
466 | ||
96daf2b0 SF |
467 | server->sec_mode = pSMBr->SecurityMode; |
468 | if ((server->sec_mode & SECMODE_USER) == 0) | |
f96637be | 469 | cifs_dbg(FYI, "share mode security\n"); |
bdc4bf6e | 470 | |
254e55ed SF |
471 | /* one byte, so no need to convert this or EncryptionKeyLen from |
472 | little endian */ | |
10b9b98e PS |
473 | server->maxReq = min_t(unsigned int, le16_to_cpu(pSMBr->MaxMpxCount), |
474 | cifs_max_pending); | |
45275789 | 475 | set_credits(server, server->maxReq); |
254e55ed | 476 | /* probably no need to store and check maxvcs */ |
c974befa | 477 | server->maxBuf = le32_to_cpu(pSMBr->MaxBufferSize); |
704528d8 | 478 | /* set up max_read for readahead check */ |
1f641d94 | 479 | server->max_read = server->maxBuf; |
eca6acf9 | 480 | server->max_rw = le32_to_cpu(pSMBr->MaxRawSize); |
f96637be | 481 | cifs_dbg(NOISY, "Max buf = %d\n", ses->server->maxBuf); |
254e55ed | 482 | server->capabilities = le32_to_cpu(pSMBr->Capabilities); |
b815f1e5 SF |
483 | server->timeAdj = (int)(__s16)le16_to_cpu(pSMBr->ServerTimeZone); |
484 | server->timeAdj *= 60; | |
31d9e2bd | 485 | |
e598d1d8 JL |
486 | if (pSMBr->EncryptionKeyLength == CIFS_CRYPTO_KEY_SIZE) { |
487 | server->negflavor = CIFS_NEGFLAVOR_UNENCAP; | |
d3ba50b1 | 488 | memcpy(ses->server->cryptkey, pSMBr->u.EncryptionKey, |
254e55ed | 489 | CIFS_CRYPTO_KEY_SIZE); |
f291095f NP |
490 | } else if (pSMBr->hdr.Flags2 & SMBFLG2_EXT_SEC || |
491 | server->capabilities & CAP_EXTENDED_SECURITY) { | |
e598d1d8 | 492 | server->negflavor = CIFS_NEGFLAVOR_EXTENDED; |
3f618223 | 493 | rc = decode_ext_sec_blob(ses, pSMBr); |
e598d1d8 | 494 | } else if (server->sec_mode & SECMODE_PW_ENCRYPT) { |
07cc6cf9 | 495 | rc = -EIO; /* no crypt key only if plain text pwd */ |
e598d1d8 JL |
496 | } else { |
497 | server->negflavor = CIFS_NEGFLAVOR_UNENCAP; | |
254e55ed | 498 | server->capabilities &= ~CAP_EXTENDED_SECURITY; |
e598d1d8 | 499 | } |
254e55ed | 500 | |
9ddec561 | 501 | if (!rc) |
38d77c50 | 502 | rc = cifs_enable_signing(server, ses->sign); |
50c2f753 | 503 | neg_err_exit: |
4a6d87f1 | 504 | cifs_buf_release(pSMB); |
254e55ed | 505 | |
f96637be | 506 | cifs_dbg(FYI, "negprot rc %d\n", rc); |
1da177e4 LT |
507 | return rc; |
508 | } | |
509 | ||
510 | int | |
2e6e02ab | 511 | CIFSSMBTDis(const unsigned int xid, struct cifs_tcon *tcon) |
1da177e4 LT |
512 | { |
513 | struct smb_hdr *smb_buffer; | |
1da177e4 | 514 | int rc = 0; |
1da177e4 | 515 | |
f96637be | 516 | cifs_dbg(FYI, "In tree disconnect\n"); |
1da177e4 | 517 | |
f1987b44 JL |
518 | /* BB: do we need to check this? These should never be NULL. */ |
519 | if ((tcon->ses == NULL) || (tcon->ses->server == NULL)) | |
520 | return -EIO; | |
1da177e4 | 521 | |
f1987b44 JL |
522 | /* |
523 | * No need to return error on this operation if tid invalidated and | |
524 | * closed on server already e.g. due to tcp session crashing. Also, | |
525 | * the tcon is no longer on the list, so no need to take lock before | |
526 | * checking this. | |
527 | */ | |
d1a931ce SP |
528 | spin_lock(&tcon->ses->chan_lock); |
529 | if ((tcon->need_reconnect) || CIFS_ALL_CHANS_NEED_RECONNECT(tcon->ses)) { | |
530 | spin_unlock(&tcon->ses->chan_lock); | |
531 | return -EIO; | |
532 | } | |
533 | spin_unlock(&tcon->ses->chan_lock); | |
1da177e4 | 534 | |
50c2f753 | 535 | rc = small_smb_init(SMB_COM_TREE_DISCONNECT, 0, tcon, |
09d1db5c | 536 | (void **)&smb_buffer); |
f1987b44 | 537 | if (rc) |
1da177e4 | 538 | return rc; |
133672ef | 539 | |
792af7b0 | 540 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *)smb_buffer, 0); |
da502f7d | 541 | cifs_small_buf_release(smb_buffer); |
1da177e4 | 542 | if (rc) |
f96637be | 543 | cifs_dbg(FYI, "Tree disconnect failed %d\n", rc); |
1da177e4 | 544 | |
50c2f753 | 545 | /* No need to return error on this operation if tid invalidated and |
f1987b44 | 546 | closed on server already e.g. due to tcp session crashing */ |
1da177e4 LT |
547 | if (rc == -EAGAIN) |
548 | rc = 0; | |
549 | ||
550 | return rc; | |
551 | } | |
552 | ||
766fdbb5 JL |
553 | /* |
554 | * This is a no-op for now. We're not really interested in the reply, but | |
555 | * rather in the fact that the server sent one and that server->lstrp | |
556 | * gets updated. | |
557 | * | |
558 | * FIXME: maybe we should consider checking that the reply matches request? | |
559 | */ | |
560 | static void | |
561 | cifs_echo_callback(struct mid_q_entry *mid) | |
562 | { | |
563 | struct TCP_Server_Info *server = mid->callback_data; | |
34f4deb7 | 564 | struct cifs_credits credits = { .value = 1, .instance = 0 }; |
766fdbb5 | 565 | |
70f08f91 | 566 | release_mid(mid); |
34f4deb7 | 567 | add_credits(server, &credits, CIFS_ECHO_OP); |
766fdbb5 JL |
568 | } |
569 | ||
570 | int | |
571 | CIFSSMBEcho(struct TCP_Server_Info *server) | |
572 | { | |
573 | ECHO_REQ *smb; | |
574 | int rc = 0; | |
738f9de5 PS |
575 | struct kvec iov[2]; |
576 | struct smb_rqst rqst = { .rq_iov = iov, | |
577 | .rq_nvec = 2 }; | |
766fdbb5 | 578 | |
f96637be | 579 | cifs_dbg(FYI, "In echo request\n"); |
766fdbb5 JL |
580 | |
581 | rc = small_smb_init(SMB_COM_ECHO, 0, NULL, (void **)&smb); | |
582 | if (rc) | |
583 | return rc; | |
584 | ||
26c9cb66 SF |
585 | if (server->capabilities & CAP_UNICODE) |
586 | smb->hdr.Flags2 |= SMBFLG2_UNICODE; | |
587 | ||
766fdbb5 | 588 | /* set up echo request */ |
5443d130 | 589 | smb->hdr.Tid = 0xffff; |
99d86c8f JL |
590 | smb->hdr.WordCount = 1; |
591 | put_unaligned_le16(1, &smb->EchoCount); | |
820a803f | 592 | put_bcc(1, &smb->hdr); |
766fdbb5 | 593 | smb->Data[0] = 'a'; |
be8e3b00 | 594 | inc_rfc1001_len(smb, 3); |
738f9de5 PS |
595 | |
596 | iov[0].iov_len = 4; | |
597 | iov[0].iov_base = smb; | |
598 | iov[1].iov_len = get_rfc1002_length(smb); | |
599 | iov[1].iov_base = (char *)smb + 4; | |
766fdbb5 | 600 | |
9b7c18a2 | 601 | rc = cifs_call_async(server, &rqst, NULL, cifs_echo_callback, NULL, |
392e1c5d | 602 | server, CIFS_NON_BLOCKING | CIFS_ECHO_OP, NULL); |
766fdbb5 | 603 | if (rc) |
f96637be | 604 | cifs_dbg(FYI, "Echo request failed: %d\n", rc); |
766fdbb5 JL |
605 | |
606 | cifs_small_buf_release(smb); | |
607 | ||
608 | return rc; | |
609 | } | |
610 | ||
1da177e4 | 611 | int |
58c45c58 | 612 | CIFSSMBLogoff(const unsigned int xid, struct cifs_ses *ses) |
1da177e4 | 613 | { |
1da177e4 LT |
614 | LOGOFF_ANDX_REQ *pSMB; |
615 | int rc = 0; | |
1da177e4 | 616 | |
f96637be | 617 | cifs_dbg(FYI, "In SMBLogoff for session disconnect\n"); |
3b795210 | 618 | |
14fbf50d JL |
619 | /* |
620 | * BB: do we need to check validity of ses and server? They should | |
621 | * always be valid since we have an active reference. If not, that | |
622 | * should probably be a BUG() | |
623 | */ | |
624 | if (!ses || !ses->server) | |
3b795210 SF |
625 | return -EIO; |
626 | ||
d7b619cf | 627 | mutex_lock(&ses->session_mutex); |
d1a931ce SP |
628 | spin_lock(&ses->chan_lock); |
629 | if (CIFS_ALL_CHANS_NEED_RECONNECT(ses)) { | |
630 | spin_unlock(&ses->chan_lock); | |
3b795210 SF |
631 | goto session_already_dead; /* no need to send SMBlogoff if uid |
632 | already closed due to reconnect */ | |
d1a931ce SP |
633 | } |
634 | spin_unlock(&ses->chan_lock); | |
635 | ||
1da177e4 LT |
636 | rc = small_smb_init(SMB_COM_LOGOFF_ANDX, 2, NULL, (void **)&pSMB); |
637 | if (rc) { | |
d7b619cf | 638 | mutex_unlock(&ses->session_mutex); |
1da177e4 LT |
639 | return rc; |
640 | } | |
641 | ||
88257360 | 642 | pSMB->hdr.Mid = get_next_mid(ses->server); |
1982c344 | 643 | |
38d77c50 JL |
644 | if (ses->server->sign) |
645 | pSMB->hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE; | |
1da177e4 LT |
646 | |
647 | pSMB->hdr.Uid = ses->Suid; | |
648 | ||
649 | pSMB->AndXCommand = 0xFF; | |
792af7b0 | 650 | rc = SendReceiveNoRsp(xid, ses, (char *) pSMB, 0); |
da502f7d | 651 | cifs_small_buf_release(pSMB); |
3b795210 | 652 | session_already_dead: |
d7b619cf | 653 | mutex_unlock(&ses->session_mutex); |
1da177e4 LT |
654 | |
655 | /* if session dead then we do not need to do ulogoff, | |
50c2f753 | 656 | since server closed smb session, no sense reporting |
1da177e4 LT |
657 | error */ |
658 | if (rc == -EAGAIN) | |
659 | rc = 0; | |
660 | return rc; | |
661 | } | |
662 | ||
2d785a50 | 663 | int |
6d5786a3 PS |
664 | CIFSPOSIXDelFile(const unsigned int xid, struct cifs_tcon *tcon, |
665 | const char *fileName, __u16 type, | |
666 | const struct nls_table *nls_codepage, int remap) | |
2d785a50 SF |
667 | { |
668 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
669 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
670 | struct unlink_psx_rq *pRqD; | |
671 | int name_len; | |
672 | int rc = 0; | |
673 | int bytes_returned = 0; | |
674 | __u16 params, param_offset, offset, byte_count; | |
675 | ||
f96637be | 676 | cifs_dbg(FYI, "In POSIX delete\n"); |
2d785a50 SF |
677 | PsxDelete: |
678 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
679 | (void **) &pSMBr); | |
680 | if (rc) | |
681 | return rc; | |
682 | ||
683 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
684 | name_len = | |
acbbb76a SF |
685 | cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName, |
686 | PATH_MAX, nls_codepage, remap); | |
2d785a50 SF |
687 | name_len++; /* trailing null */ |
688 | name_len *= 2; | |
340625e6 RS |
689 | } else { |
690 | name_len = copy_path_name(pSMB->FileName, fileName); | |
2d785a50 SF |
691 | } |
692 | ||
693 | params = 6 + name_len; | |
694 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
695 | pSMB->MaxDataCount = 0; /* BB double check this with jra */ | |
696 | pSMB->MaxSetupCount = 0; | |
697 | pSMB->Reserved = 0; | |
698 | pSMB->Flags = 0; | |
699 | pSMB->Timeout = 0; | |
700 | pSMB->Reserved2 = 0; | |
701 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
702 | InformationLevel) - 4; | |
703 | offset = param_offset + params; | |
704 | ||
7b09d4e0 SF |
705 | /* Setup pointer to Request Data (inode type). |
706 | * Note that SMB offsets are from the beginning of SMB which is 4 bytes | |
707 | * in, after RFC1001 field | |
708 | */ | |
709 | pRqD = (struct unlink_psx_rq *)((char *)(pSMB) + offset + 4); | |
2d785a50 SF |
710 | pRqD->type = cpu_to_le16(type); |
711 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
712 | pSMB->DataOffset = cpu_to_le16(offset); | |
713 | pSMB->SetupCount = 1; | |
714 | pSMB->Reserved3 = 0; | |
715 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
716 | byte_count = 3 /* pad */ + params + sizeof(struct unlink_psx_rq); | |
717 | ||
718 | pSMB->DataCount = cpu_to_le16(sizeof(struct unlink_psx_rq)); | |
719 | pSMB->TotalDataCount = cpu_to_le16(sizeof(struct unlink_psx_rq)); | |
720 | pSMB->ParameterCount = cpu_to_le16(params); | |
721 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
722 | pSMB->InformationLevel = cpu_to_le16(SMB_POSIX_UNLINK); | |
723 | pSMB->Reserved4 = 0; | |
be8e3b00 | 724 | inc_rfc1001_len(pSMB, byte_count); |
2d785a50 SF |
725 | pSMB->ByteCount = cpu_to_le16(byte_count); |
726 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
727 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 728 | if (rc) |
f96637be | 729 | cifs_dbg(FYI, "Posix delete returned %d\n", rc); |
2d785a50 SF |
730 | cifs_buf_release(pSMB); |
731 | ||
44c58186 | 732 | cifs_stats_inc(&tcon->stats.cifs_stats.num_deletes); |
2d785a50 SF |
733 | |
734 | if (rc == -EAGAIN) | |
735 | goto PsxDelete; | |
736 | ||
737 | return rc; | |
738 | } | |
739 | ||
1da177e4 | 740 | int |
ed6875e0 PS |
741 | CIFSSMBDelFile(const unsigned int xid, struct cifs_tcon *tcon, const char *name, |
742 | struct cifs_sb_info *cifs_sb) | |
1da177e4 LT |
743 | { |
744 | DELETE_FILE_REQ *pSMB = NULL; | |
745 | DELETE_FILE_RSP *pSMBr = NULL; | |
746 | int rc = 0; | |
747 | int bytes_returned; | |
748 | int name_len; | |
2baa2682 | 749 | int remap = cifs_remap(cifs_sb); |
1da177e4 LT |
750 | |
751 | DelFileRetry: | |
752 | rc = smb_init(SMB_COM_DELETE, 1, tcon, (void **) &pSMB, | |
753 | (void **) &pSMBr); | |
754 | if (rc) | |
755 | return rc; | |
756 | ||
757 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
ed6875e0 PS |
758 | name_len = cifsConvertToUTF16((__le16 *) pSMB->fileName, name, |
759 | PATH_MAX, cifs_sb->local_nls, | |
760 | remap); | |
1da177e4 LT |
761 | name_len++; /* trailing null */ |
762 | name_len *= 2; | |
340625e6 RS |
763 | } else { |
764 | name_len = copy_path_name(pSMB->fileName, name); | |
1da177e4 LT |
765 | } |
766 | pSMB->SearchAttributes = | |
767 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM); | |
768 | pSMB->BufferFormat = 0x04; | |
be8e3b00 | 769 | inc_rfc1001_len(pSMB, name_len + 1); |
1da177e4 LT |
770 | pSMB->ByteCount = cpu_to_le16(name_len + 1); |
771 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
772 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 773 | cifs_stats_inc(&tcon->stats.cifs_stats.num_deletes); |
ad7a2926 | 774 | if (rc) |
f96637be | 775 | cifs_dbg(FYI, "Error in RMFile = %d\n", rc); |
1da177e4 LT |
776 | |
777 | cifs_buf_release(pSMB); | |
778 | if (rc == -EAGAIN) | |
779 | goto DelFileRetry; | |
780 | ||
781 | return rc; | |
782 | } | |
783 | ||
784 | int | |
f958ca5d PS |
785 | CIFSSMBRmDir(const unsigned int xid, struct cifs_tcon *tcon, const char *name, |
786 | struct cifs_sb_info *cifs_sb) | |
1da177e4 LT |
787 | { |
788 | DELETE_DIRECTORY_REQ *pSMB = NULL; | |
789 | DELETE_DIRECTORY_RSP *pSMBr = NULL; | |
790 | int rc = 0; | |
791 | int bytes_returned; | |
792 | int name_len; | |
2baa2682 | 793 | int remap = cifs_remap(cifs_sb); |
1da177e4 | 794 | |
f96637be | 795 | cifs_dbg(FYI, "In CIFSSMBRmDir\n"); |
1da177e4 LT |
796 | RmDirRetry: |
797 | rc = smb_init(SMB_COM_DELETE_DIRECTORY, 0, tcon, (void **) &pSMB, | |
798 | (void **) &pSMBr); | |
799 | if (rc) | |
800 | return rc; | |
801 | ||
802 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
f958ca5d PS |
803 | name_len = cifsConvertToUTF16((__le16 *) pSMB->DirName, name, |
804 | PATH_MAX, cifs_sb->local_nls, | |
805 | remap); | |
1da177e4 LT |
806 | name_len++; /* trailing null */ |
807 | name_len *= 2; | |
340625e6 RS |
808 | } else { |
809 | name_len = copy_path_name(pSMB->DirName, name); | |
1da177e4 LT |
810 | } |
811 | ||
812 | pSMB->BufferFormat = 0x04; | |
be8e3b00 | 813 | inc_rfc1001_len(pSMB, name_len + 1); |
1da177e4 LT |
814 | pSMB->ByteCount = cpu_to_le16(name_len + 1); |
815 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
816 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 817 | cifs_stats_inc(&tcon->stats.cifs_stats.num_rmdirs); |
ad7a2926 | 818 | if (rc) |
f96637be | 819 | cifs_dbg(FYI, "Error in RMDir = %d\n", rc); |
1da177e4 LT |
820 | |
821 | cifs_buf_release(pSMB); | |
822 | if (rc == -EAGAIN) | |
823 | goto RmDirRetry; | |
824 | return rc; | |
825 | } | |
826 | ||
827 | int | |
c3ca78e2 SF |
828 | CIFSSMBMkDir(const unsigned int xid, struct inode *inode, umode_t mode, |
829 | struct cifs_tcon *tcon, const char *name, | |
f436720e | 830 | struct cifs_sb_info *cifs_sb) |
1da177e4 LT |
831 | { |
832 | int rc = 0; | |
833 | CREATE_DIRECTORY_REQ *pSMB = NULL; | |
834 | CREATE_DIRECTORY_RSP *pSMBr = NULL; | |
835 | int bytes_returned; | |
836 | int name_len; | |
2baa2682 | 837 | int remap = cifs_remap(cifs_sb); |
1da177e4 | 838 | |
f96637be | 839 | cifs_dbg(FYI, "In CIFSSMBMkDir\n"); |
1da177e4 LT |
840 | MkDirRetry: |
841 | rc = smb_init(SMB_COM_CREATE_DIRECTORY, 0, tcon, (void **) &pSMB, | |
842 | (void **) &pSMBr); | |
843 | if (rc) | |
844 | return rc; | |
845 | ||
846 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
acbbb76a | 847 | name_len = cifsConvertToUTF16((__le16 *) pSMB->DirName, name, |
f436720e PS |
848 | PATH_MAX, cifs_sb->local_nls, |
849 | remap); | |
1da177e4 LT |
850 | name_len++; /* trailing null */ |
851 | name_len *= 2; | |
340625e6 RS |
852 | } else { |
853 | name_len = copy_path_name(pSMB->DirName, name); | |
1da177e4 LT |
854 | } |
855 | ||
856 | pSMB->BufferFormat = 0x04; | |
be8e3b00 | 857 | inc_rfc1001_len(pSMB, name_len + 1); |
1da177e4 LT |
858 | pSMB->ByteCount = cpu_to_le16(name_len + 1); |
859 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
860 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 861 | cifs_stats_inc(&tcon->stats.cifs_stats.num_mkdirs); |
ad7a2926 | 862 | if (rc) |
f96637be | 863 | cifs_dbg(FYI, "Error in Mkdir = %d\n", rc); |
a5a2b489 | 864 | |
1da177e4 LT |
865 | cifs_buf_release(pSMB); |
866 | if (rc == -EAGAIN) | |
867 | goto MkDirRetry; | |
868 | return rc; | |
869 | } | |
870 | ||
2dd29d31 | 871 | int |
6d5786a3 PS |
872 | CIFSPOSIXCreate(const unsigned int xid, struct cifs_tcon *tcon, |
873 | __u32 posix_flags, __u64 mode, __u16 *netfid, | |
874 | FILE_UNIX_BASIC_INFO *pRetData, __u32 *pOplock, | |
875 | const char *name, const struct nls_table *nls_codepage, | |
876 | int remap) | |
2dd29d31 SF |
877 | { |
878 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
879 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
880 | int name_len; | |
881 | int rc = 0; | |
882 | int bytes_returned = 0; | |
2dd29d31 | 883 | __u16 params, param_offset, offset, byte_count, count; |
ad7a2926 SF |
884 | OPEN_PSX_REQ *pdata; |
885 | OPEN_PSX_RSP *psx_rsp; | |
2dd29d31 | 886 | |
f96637be | 887 | cifs_dbg(FYI, "In POSIX Create\n"); |
2dd29d31 SF |
888 | PsxCreat: |
889 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
890 | (void **) &pSMBr); | |
891 | if (rc) | |
892 | return rc; | |
893 | ||
894 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
895 | name_len = | |
acbbb76a SF |
896 | cifsConvertToUTF16((__le16 *) pSMB->FileName, name, |
897 | PATH_MAX, nls_codepage, remap); | |
2dd29d31 SF |
898 | name_len++; /* trailing null */ |
899 | name_len *= 2; | |
340625e6 RS |
900 | } else { |
901 | name_len = copy_path_name(pSMB->FileName, name); | |
2dd29d31 SF |
902 | } |
903 | ||
904 | params = 6 + name_len; | |
905 | count = sizeof(OPEN_PSX_REQ); | |
906 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
907 | pSMB->MaxDataCount = cpu_to_le16(1000); /* large enough */ | |
908 | pSMB->MaxSetupCount = 0; | |
909 | pSMB->Reserved = 0; | |
910 | pSMB->Flags = 0; | |
911 | pSMB->Timeout = 0; | |
912 | pSMB->Reserved2 = 0; | |
913 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 914 | InformationLevel) - 4; |
2dd29d31 | 915 | offset = param_offset + params; |
21a64910 SF |
916 | /* SMB offsets are from the beginning of SMB which is 4 bytes in, after RFC1001 field */ |
917 | pdata = (OPEN_PSX_REQ *)((char *)(pSMB) + offset + 4); | |
8f2376ad | 918 | pdata->Level = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC); |
2dd29d31 | 919 | pdata->Permissions = cpu_to_le64(mode); |
50c2f753 | 920 | pdata->PosixOpenFlags = cpu_to_le32(posix_flags); |
2dd29d31 SF |
921 | pdata->OpenFlags = cpu_to_le32(*pOplock); |
922 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
923 | pSMB->DataOffset = cpu_to_le16(offset); | |
924 | pSMB->SetupCount = 1; | |
925 | pSMB->Reserved3 = 0; | |
926 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
927 | byte_count = 3 /* pad */ + params + count; | |
928 | ||
929 | pSMB->DataCount = cpu_to_le16(count); | |
930 | pSMB->ParameterCount = cpu_to_le16(params); | |
931 | pSMB->TotalDataCount = pSMB->DataCount; | |
932 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
933 | pSMB->InformationLevel = cpu_to_le16(SMB_POSIX_OPEN); | |
934 | pSMB->Reserved4 = 0; | |
be8e3b00 | 935 | inc_rfc1001_len(pSMB, byte_count); |
2dd29d31 SF |
936 | pSMB->ByteCount = cpu_to_le16(byte_count); |
937 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
938 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
939 | if (rc) { | |
f96637be | 940 | cifs_dbg(FYI, "Posix create returned %d\n", rc); |
2dd29d31 SF |
941 | goto psx_create_err; |
942 | } | |
943 | ||
f96637be | 944 | cifs_dbg(FYI, "copying inode info\n"); |
2dd29d31 SF |
945 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
946 | ||
820a803f | 947 | if (rc || get_bcc(&pSMBr->hdr) < sizeof(OPEN_PSX_RSP)) { |
2dd29d31 SF |
948 | rc = -EIO; /* bad smb */ |
949 | goto psx_create_err; | |
950 | } | |
951 | ||
952 | /* copy return information to pRetData */ | |
50c2f753 | 953 | psx_rsp = (OPEN_PSX_RSP *)((char *) &pSMBr->hdr.Protocol |
2dd29d31 | 954 | + le16_to_cpu(pSMBr->t2.DataOffset)); |
50c2f753 | 955 | |
2dd29d31 | 956 | *pOplock = le16_to_cpu(psx_rsp->OplockFlags); |
790fe579 | 957 | if (netfid) |
2dd29d31 SF |
958 | *netfid = psx_rsp->Fid; /* cifs fid stays in le */ |
959 | /* Let caller know file was created so we can set the mode. */ | |
960 | /* Do we care about the CreateAction in any other cases? */ | |
790fe579 | 961 | if (cpu_to_le32(FILE_CREATE) == psx_rsp->CreateAction) |
2dd29d31 SF |
962 | *pOplock |= CIFS_CREATE_ACTION; |
963 | /* check to make sure response data is there */ | |
8f2376ad CG |
964 | if (psx_rsp->ReturnedLevel != cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC)) { |
965 | pRetData->Type = cpu_to_le32(-1); /* unknown */ | |
f96637be | 966 | cifs_dbg(NOISY, "unknown type\n"); |
cbac3cba | 967 | } else { |
820a803f | 968 | if (get_bcc(&pSMBr->hdr) < sizeof(OPEN_PSX_RSP) |
2dd29d31 | 969 | + sizeof(FILE_UNIX_BASIC_INFO)) { |
f96637be | 970 | cifs_dbg(VFS, "Open response data too small\n"); |
8f2376ad | 971 | pRetData->Type = cpu_to_le32(-1); |
2dd29d31 SF |
972 | goto psx_create_err; |
973 | } | |
50c2f753 | 974 | memcpy((char *) pRetData, |
cbac3cba | 975 | (char *)psx_rsp + sizeof(OPEN_PSX_RSP), |
26f57364 | 976 | sizeof(FILE_UNIX_BASIC_INFO)); |
2dd29d31 | 977 | } |
2dd29d31 SF |
978 | |
979 | psx_create_err: | |
980 | cifs_buf_release(pSMB); | |
981 | ||
65bc98b0 | 982 | if (posix_flags & SMB_O_DIRECTORY) |
44c58186 | 983 | cifs_stats_inc(&tcon->stats.cifs_stats.num_posixmkdirs); |
65bc98b0 | 984 | else |
44c58186 | 985 | cifs_stats_inc(&tcon->stats.cifs_stats.num_posixopens); |
2dd29d31 SF |
986 | |
987 | if (rc == -EAGAIN) | |
988 | goto PsxCreat; | |
989 | ||
50c2f753 | 990 | return rc; |
2dd29d31 SF |
991 | } |
992 | ||
a9d02ad4 SF |
993 | static __u16 convert_disposition(int disposition) |
994 | { | |
995 | __u16 ofun = 0; | |
996 | ||
997 | switch (disposition) { | |
998 | case FILE_SUPERSEDE: | |
999 | ofun = SMBOPEN_OCREATE | SMBOPEN_OTRUNC; | |
1000 | break; | |
1001 | case FILE_OPEN: | |
1002 | ofun = SMBOPEN_OAPPEND; | |
1003 | break; | |
1004 | case FILE_CREATE: | |
1005 | ofun = SMBOPEN_OCREATE; | |
1006 | break; | |
1007 | case FILE_OPEN_IF: | |
1008 | ofun = SMBOPEN_OCREATE | SMBOPEN_OAPPEND; | |
1009 | break; | |
1010 | case FILE_OVERWRITE: | |
1011 | ofun = SMBOPEN_OTRUNC; | |
1012 | break; | |
1013 | case FILE_OVERWRITE_IF: | |
1014 | ofun = SMBOPEN_OCREATE | SMBOPEN_OTRUNC; | |
1015 | break; | |
1016 | default: | |
f96637be | 1017 | cifs_dbg(FYI, "unknown disposition %d\n", disposition); |
a9d02ad4 SF |
1018 | ofun = SMBOPEN_OAPPEND; /* regular open */ |
1019 | } | |
1020 | return ofun; | |
1021 | } | |
1022 | ||
35fc37d5 JL |
1023 | static int |
1024 | access_flags_to_smbopen_mode(const int access_flags) | |
1025 | { | |
1026 | int masked_flags = access_flags & (GENERIC_READ | GENERIC_WRITE); | |
1027 | ||
1028 | if (masked_flags == GENERIC_READ) | |
1029 | return SMBOPEN_READ; | |
1030 | else if (masked_flags == GENERIC_WRITE) | |
1031 | return SMBOPEN_WRITE; | |
1032 | ||
1033 | /* just go for read/write */ | |
1034 | return SMBOPEN_READWRITE; | |
1035 | } | |
1036 | ||
a9d02ad4 | 1037 | int |
6d5786a3 | 1038 | SMBLegacyOpen(const unsigned int xid, struct cifs_tcon *tcon, |
a9d02ad4 | 1039 | const char *fileName, const int openDisposition, |
ad7a2926 SF |
1040 | const int access_flags, const int create_options, __u16 *netfid, |
1041 | int *pOplock, FILE_ALL_INFO *pfile_info, | |
a9d02ad4 SF |
1042 | const struct nls_table *nls_codepage, int remap) |
1043 | { | |
032e091d | 1044 | int rc; |
a9d02ad4 SF |
1045 | OPENX_REQ *pSMB = NULL; |
1046 | OPENX_RSP *pSMBr = NULL; | |
1047 | int bytes_returned; | |
1048 | int name_len; | |
1049 | __u16 count; | |
1050 | ||
1051 | OldOpenRetry: | |
1052 | rc = smb_init(SMB_COM_OPEN_ANDX, 15, tcon, (void **) &pSMB, | |
1053 | (void **) &pSMBr); | |
1054 | if (rc) | |
1055 | return rc; | |
1056 | ||
1057 | pSMB->AndXCommand = 0xFF; /* none */ | |
1058 | ||
1059 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1060 | count = 1; /* account for one byte pad to word boundary */ | |
1061 | name_len = | |
acbbb76a SF |
1062 | cifsConvertToUTF16((__le16 *) (pSMB->fileName + 1), |
1063 | fileName, PATH_MAX, nls_codepage, remap); | |
a9d02ad4 SF |
1064 | name_len++; /* trailing null */ |
1065 | name_len *= 2; | |
340625e6 | 1066 | } else { |
a9d02ad4 | 1067 | count = 0; /* no pad */ |
340625e6 | 1068 | name_len = copy_path_name(pSMB->fileName, fileName); |
a9d02ad4 SF |
1069 | } |
1070 | if (*pOplock & REQ_OPLOCK) | |
1071 | pSMB->OpenFlags = cpu_to_le16(REQ_OPLOCK); | |
26f57364 | 1072 | else if (*pOplock & REQ_BATCHOPLOCK) |
a9d02ad4 | 1073 | pSMB->OpenFlags = cpu_to_le16(REQ_BATCHOPLOCK); |
26f57364 | 1074 | |
a9d02ad4 | 1075 | pSMB->OpenFlags |= cpu_to_le16(REQ_MORE_INFO); |
35fc37d5 | 1076 | pSMB->Mode = cpu_to_le16(access_flags_to_smbopen_mode(access_flags)); |
a9d02ad4 SF |
1077 | pSMB->Mode |= cpu_to_le16(0x40); /* deny none */ |
1078 | /* set file as system file if special file such | |
1079 | as fifo and server expecting SFU style and | |
1080 | no Unix extensions */ | |
1081 | ||
790fe579 SF |
1082 | if (create_options & CREATE_OPTION_SPECIAL) |
1083 | pSMB->FileAttributes = cpu_to_le16(ATTR_SYSTEM); | |
ad7a2926 SF |
1084 | else /* BB FIXME BB */ |
1085 | pSMB->FileAttributes = cpu_to_le16(0/*ATTR_NORMAL*/); | |
a9d02ad4 | 1086 | |
67750fb9 JL |
1087 | if (create_options & CREATE_OPTION_READONLY) |
1088 | pSMB->FileAttributes |= cpu_to_le16(ATTR_READONLY); | |
a9d02ad4 SF |
1089 | |
1090 | /* BB FIXME BB */ | |
50c2f753 SF |
1091 | /* pSMB->CreateOptions = cpu_to_le32(create_options & |
1092 | CREATE_OPTIONS_MASK); */ | |
a9d02ad4 | 1093 | /* BB FIXME END BB */ |
3e87d803 SF |
1094 | |
1095 | pSMB->Sattr = cpu_to_le16(ATTR_HIDDEN | ATTR_SYSTEM | ATTR_DIRECTORY); | |
70ca734a | 1096 | pSMB->OpenFunction = cpu_to_le16(convert_disposition(openDisposition)); |
a9d02ad4 | 1097 | count += name_len; |
be8e3b00 | 1098 | inc_rfc1001_len(pSMB, count); |
a9d02ad4 SF |
1099 | |
1100 | pSMB->ByteCount = cpu_to_le16(count); | |
a9d02ad4 | 1101 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
7749981e | 1102 | (struct smb_hdr *)pSMBr, &bytes_returned, 0); |
44c58186 | 1103 | cifs_stats_inc(&tcon->stats.cifs_stats.num_opens); |
a9d02ad4 | 1104 | if (rc) { |
f96637be | 1105 | cifs_dbg(FYI, "Error in Open = %d\n", rc); |
a9d02ad4 SF |
1106 | } else { |
1107 | /* BB verify if wct == 15 */ | |
1108 | ||
582d21e5 | 1109 | /* *pOplock = pSMBr->OplockLevel; */ /* BB take from action field*/ |
a9d02ad4 SF |
1110 | |
1111 | *netfid = pSMBr->Fid; /* cifs fid stays in le */ | |
1112 | /* Let caller know file was created so we can set the mode. */ | |
1113 | /* Do we care about the CreateAction in any other cases? */ | |
1114 | /* BB FIXME BB */ | |
790fe579 | 1115 | /* if (cpu_to_le32(FILE_CREATE) == pSMBr->CreateAction) |
a9d02ad4 SF |
1116 | *pOplock |= CIFS_CREATE_ACTION; */ |
1117 | /* BB FIXME END */ | |
1118 | ||
790fe579 | 1119 | if (pfile_info) { |
a9d02ad4 SF |
1120 | pfile_info->CreationTime = 0; /* BB convert CreateTime*/ |
1121 | pfile_info->LastAccessTime = 0; /* BB fixme */ | |
1122 | pfile_info->LastWriteTime = 0; /* BB fixme */ | |
1123 | pfile_info->ChangeTime = 0; /* BB fixme */ | |
70ca734a | 1124 | pfile_info->Attributes = |
50c2f753 | 1125 | cpu_to_le32(le16_to_cpu(pSMBr->FileAttributes)); |
a9d02ad4 | 1126 | /* the file_info buf is endian converted by caller */ |
70ca734a SF |
1127 | pfile_info->AllocationSize = |
1128 | cpu_to_le64(le32_to_cpu(pSMBr->EndOfFile)); | |
1129 | pfile_info->EndOfFile = pfile_info->AllocationSize; | |
a9d02ad4 | 1130 | pfile_info->NumberOfLinks = cpu_to_le32(1); |
9a8165fc | 1131 | pfile_info->DeletePending = 0; |
a9d02ad4 SF |
1132 | } |
1133 | } | |
1134 | ||
1135 | cifs_buf_release(pSMB); | |
1136 | if (rc == -EAGAIN) | |
1137 | goto OldOpenRetry; | |
1138 | return rc; | |
1139 | } | |
1140 | ||
1da177e4 | 1141 | int |
d81b8a40 PS |
1142 | CIFS_open(const unsigned int xid, struct cifs_open_parms *oparms, int *oplock, |
1143 | FILE_ALL_INFO *buf) | |
1da177e4 | 1144 | { |
1afdea4f | 1145 | int rc; |
9bf4fa01 PS |
1146 | OPEN_REQ *req = NULL; |
1147 | OPEN_RSP *rsp = NULL; | |
1da177e4 LT |
1148 | int bytes_returned; |
1149 | int name_len; | |
1150 | __u16 count; | |
d81b8a40 PS |
1151 | struct cifs_sb_info *cifs_sb = oparms->cifs_sb; |
1152 | struct cifs_tcon *tcon = oparms->tcon; | |
2baa2682 | 1153 | int remap = cifs_remap(cifs_sb); |
d81b8a40 PS |
1154 | const struct nls_table *nls = cifs_sb->local_nls; |
1155 | int create_options = oparms->create_options; | |
1156 | int desired_access = oparms->desired_access; | |
1157 | int disposition = oparms->disposition; | |
1158 | const char *path = oparms->path; | |
1da177e4 LT |
1159 | |
1160 | openRetry: | |
9bf4fa01 PS |
1161 | rc = smb_init(SMB_COM_NT_CREATE_ANDX, 24, tcon, (void **)&req, |
1162 | (void **)&rsp); | |
1da177e4 LT |
1163 | if (rc) |
1164 | return rc; | |
1165 | ||
9bf4fa01 PS |
1166 | /* no commands go after this */ |
1167 | req->AndXCommand = 0xFF; | |
1da177e4 | 1168 | |
9bf4fa01 PS |
1169 | if (req->hdr.Flags2 & SMBFLG2_UNICODE) { |
1170 | /* account for one byte pad to word boundary */ | |
1171 | count = 1; | |
1172 | name_len = cifsConvertToUTF16((__le16 *)(req->fileName + 1), | |
1173 | path, PATH_MAX, nls, remap); | |
1174 | /* trailing null */ | |
1175 | name_len++; | |
1da177e4 | 1176 | name_len *= 2; |
9bf4fa01 PS |
1177 | req->NameLength = cpu_to_le16(name_len); |
1178 | } else { | |
1179 | /* BB improve check for buffer overruns BB */ | |
1180 | /* no pad */ | |
1181 | count = 0; | |
340625e6 | 1182 | name_len = copy_path_name(req->fileName, path); |
9bf4fa01 | 1183 | req->NameLength = cpu_to_le16(name_len); |
1da177e4 | 1184 | } |
9bf4fa01 PS |
1185 | |
1186 | if (*oplock & REQ_OPLOCK) | |
1187 | req->OpenFlags = cpu_to_le32(REQ_OPLOCK); | |
1188 | else if (*oplock & REQ_BATCHOPLOCK) | |
1189 | req->OpenFlags = cpu_to_le32(REQ_BATCHOPLOCK); | |
1190 | ||
1191 | req->DesiredAccess = cpu_to_le32(desired_access); | |
1192 | req->AllocationSize = 0; | |
1193 | ||
1194 | /* | |
1195 | * Set file as system file if special file such as fifo and server | |
1196 | * expecting SFU style and no Unix extensions. | |
1197 | */ | |
790fe579 | 1198 | if (create_options & CREATE_OPTION_SPECIAL) |
9bf4fa01 | 1199 | req->FileAttributes = cpu_to_le32(ATTR_SYSTEM); |
eda3c029 | 1200 | else |
9bf4fa01 | 1201 | req->FileAttributes = cpu_to_le32(ATTR_NORMAL); |
67750fb9 | 1202 | |
9bf4fa01 PS |
1203 | /* |
1204 | * XP does not handle ATTR_POSIX_SEMANTICS but it helps speed up case | |
1205 | * sensitive checks for other servers such as Samba. | |
1206 | */ | |
1da177e4 | 1207 | if (tcon->ses->capabilities & CAP_UNIX) |
9bf4fa01 | 1208 | req->FileAttributes |= cpu_to_le32(ATTR_POSIX_SEMANTICS); |
1da177e4 | 1209 | |
67750fb9 | 1210 | if (create_options & CREATE_OPTION_READONLY) |
9bf4fa01 PS |
1211 | req->FileAttributes |= cpu_to_le32(ATTR_READONLY); |
1212 | ||
1213 | req->ShareAccess = cpu_to_le32(FILE_SHARE_ALL); | |
1214 | req->CreateDisposition = cpu_to_le32(disposition); | |
1215 | req->CreateOptions = cpu_to_le32(create_options & CREATE_OPTIONS_MASK); | |
67750fb9 | 1216 | |
09d1db5c | 1217 | /* BB Expirement with various impersonation levels and verify */ |
9bf4fa01 PS |
1218 | req->ImpersonationLevel = cpu_to_le32(SECURITY_IMPERSONATION); |
1219 | req->SecurityFlags = SECURITY_CONTEXT_TRACKING|SECURITY_EFFECTIVE_ONLY; | |
1da177e4 LT |
1220 | |
1221 | count += name_len; | |
9bf4fa01 | 1222 | inc_rfc1001_len(req, count); |
1da177e4 | 1223 | |
9bf4fa01 PS |
1224 | req->ByteCount = cpu_to_le16(count); |
1225 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *)req, | |
1226 | (struct smb_hdr *)rsp, &bytes_returned, 0); | |
44c58186 | 1227 | cifs_stats_inc(&tcon->stats.cifs_stats.num_opens); |
1da177e4 | 1228 | if (rc) { |
f96637be | 1229 | cifs_dbg(FYI, "Error in Open = %d\n", rc); |
9bf4fa01 PS |
1230 | cifs_buf_release(req); |
1231 | if (rc == -EAGAIN) | |
1232 | goto openRetry; | |
1233 | return rc; | |
1da177e4 | 1234 | } |
a5a2b489 | 1235 | |
9bf4fa01 PS |
1236 | /* 1 byte no need to le_to_cpu */ |
1237 | *oplock = rsp->OplockLevel; | |
1238 | /* cifs fid stays in le */ | |
d81b8a40 | 1239 | oparms->fid->netfid = rsp->Fid; |
86f740f2 | 1240 | oparms->fid->access = desired_access; |
9bf4fa01 PS |
1241 | |
1242 | /* Let caller know file was created so we can set the mode. */ | |
1243 | /* Do we care about the CreateAction in any other cases? */ | |
1244 | if (cpu_to_le32(FILE_CREATE) == rsp->CreateAction) | |
1245 | *oplock |= CIFS_CREATE_ACTION; | |
1246 | ||
1247 | if (buf) { | |
1248 | /* copy from CreationTime to Attributes */ | |
1249 | memcpy((char *)buf, (char *)&rsp->CreationTime, 36); | |
1250 | /* the file_info buf is endian converted by caller */ | |
1251 | buf->AllocationSize = rsp->AllocationSize; | |
1252 | buf->EndOfFile = rsp->EndOfFile; | |
1253 | buf->NumberOfLinks = cpu_to_le32(1); | |
1254 | buf->DeletePending = 0; | |
1255 | } | |
1256 | ||
1257 | cifs_buf_release(req); | |
1da177e4 LT |
1258 | return rc; |
1259 | } | |
1260 | ||
e28bc5b1 JL |
1261 | static void |
1262 | cifs_readv_callback(struct mid_q_entry *mid) | |
1263 | { | |
1264 | struct cifs_readdata *rdata = mid->callback_data; | |
1265 | struct cifs_tcon *tcon = tlink_tcon(rdata->cfile->tlink); | |
1266 | struct TCP_Server_Info *server = tcon->ses->server; | |
738f9de5 PS |
1267 | struct smb_rqst rqst = { .rq_iov = rdata->iov, |
1268 | .rq_nvec = 2, | |
d08089f6 DH |
1269 | .rq_iter_size = iov_iter_count(&rdata->iter), |
1270 | .rq_iter = rdata->iter }; | |
34f4deb7 | 1271 | struct cifs_credits credits = { .value = 1, .instance = 0 }; |
e28bc5b1 | 1272 | |
f96637be JP |
1273 | cifs_dbg(FYI, "%s: mid=%llu state=%d result=%d bytes=%u\n", |
1274 | __func__, mid->mid, mid->mid_state, rdata->result, | |
1275 | rdata->bytes); | |
e28bc5b1 | 1276 | |
7c9421e1 | 1277 | switch (mid->mid_state) { |
e28bc5b1 JL |
1278 | case MID_RESPONSE_RECEIVED: |
1279 | /* result already set, check signature */ | |
38d77c50 | 1280 | if (server->sign) { |
985e4ff0 SF |
1281 | int rc = 0; |
1282 | ||
bf5ea0e2 | 1283 | rc = cifs_verify_signature(&rqst, server, |
0124cc45 | 1284 | mid->sequence_number); |
985e4ff0 | 1285 | if (rc) |
f96637be JP |
1286 | cifs_dbg(VFS, "SMB signature verification returned error = %d\n", |
1287 | rc); | |
e28bc5b1 JL |
1288 | } |
1289 | /* FIXME: should this be counted toward the initiating task? */ | |
34a54d61 PS |
1290 | task_io_account_read(rdata->got_bytes); |
1291 | cifs_stats_bytes_read(tcon, rdata->got_bytes); | |
e28bc5b1 JL |
1292 | break; |
1293 | case MID_REQUEST_SUBMITTED: | |
1294 | case MID_RETRY_NEEDED: | |
1295 | rdata->result = -EAGAIN; | |
d913ed17 PS |
1296 | if (server->sign && rdata->got_bytes) |
1297 | /* reset bytes number since we can not check a sign */ | |
1298 | rdata->got_bytes = 0; | |
1299 | /* FIXME: should this be counted toward the initiating task? */ | |
1300 | task_io_account_read(rdata->got_bytes); | |
1301 | cifs_stats_bytes_read(tcon, rdata->got_bytes); | |
e28bc5b1 JL |
1302 | break; |
1303 | default: | |
1304 | rdata->result = -EIO; | |
1305 | } | |
1306 | ||
da472fc8 | 1307 | queue_work(cifsiod_wq, &rdata->work); |
70f08f91 | 1308 | release_mid(mid); |
34f4deb7 | 1309 | add_credits(server, &credits, 0); |
e28bc5b1 JL |
1310 | } |
1311 | ||
1312 | /* cifs_async_readv - send an async write, and set up mid to handle result */ | |
1313 | int | |
1314 | cifs_async_readv(struct cifs_readdata *rdata) | |
1315 | { | |
1316 | int rc; | |
1317 | READ_REQ *smb = NULL; | |
1318 | int wct; | |
1319 | struct cifs_tcon *tcon = tlink_tcon(rdata->cfile->tlink); | |
738f9de5 PS |
1320 | struct smb_rqst rqst = { .rq_iov = rdata->iov, |
1321 | .rq_nvec = 2 }; | |
e28bc5b1 | 1322 | |
f96637be JP |
1323 | cifs_dbg(FYI, "%s: offset=%llu bytes=%u\n", |
1324 | __func__, rdata->offset, rdata->bytes); | |
e28bc5b1 JL |
1325 | |
1326 | if (tcon->ses->capabilities & CAP_LARGE_FILES) | |
1327 | wct = 12; | |
1328 | else { | |
1329 | wct = 10; /* old style read */ | |
1330 | if ((rdata->offset >> 32) > 0) { | |
1331 | /* can not handle this big offset for old */ | |
1332 | return -EIO; | |
1333 | } | |
1334 | } | |
1335 | ||
1336 | rc = small_smb_init(SMB_COM_READ_ANDX, wct, tcon, (void **)&smb); | |
1337 | if (rc) | |
1338 | return rc; | |
1339 | ||
1340 | smb->hdr.Pid = cpu_to_le16((__u16)rdata->pid); | |
1341 | smb->hdr.PidHigh = cpu_to_le16((__u16)(rdata->pid >> 16)); | |
1342 | ||
1343 | smb->AndXCommand = 0xFF; /* none */ | |
4b4de76e | 1344 | smb->Fid = rdata->cfile->fid.netfid; |
e28bc5b1 JL |
1345 | smb->OffsetLow = cpu_to_le32(rdata->offset & 0xFFFFFFFF); |
1346 | if (wct == 12) | |
1347 | smb->OffsetHigh = cpu_to_le32(rdata->offset >> 32); | |
1348 | smb->Remaining = 0; | |
1349 | smb->MaxCount = cpu_to_le16(rdata->bytes & 0xFFFF); | |
1350 | smb->MaxCountHigh = cpu_to_le32(rdata->bytes >> 16); | |
1351 | if (wct == 12) | |
1352 | smb->ByteCount = 0; | |
1353 | else { | |
1354 | /* old style read */ | |
1355 | struct smb_com_readx_req *smbr = | |
1356 | (struct smb_com_readx_req *)smb; | |
1357 | smbr->ByteCount = 0; | |
1358 | } | |
1359 | ||
1360 | /* 4 for RFC1001 length + 1 for BCC */ | |
738f9de5 PS |
1361 | rdata->iov[0].iov_base = smb; |
1362 | rdata->iov[0].iov_len = 4; | |
1363 | rdata->iov[1].iov_base = (char *)smb + 4; | |
1364 | rdata->iov[1].iov_len = get_rfc1002_length(smb); | |
e28bc5b1 | 1365 | |
6993f74a | 1366 | kref_get(&rdata->refcount); |
fec344e3 | 1367 | rc = cifs_call_async(tcon->ses->server, &rqst, cifs_readv_receive, |
3349c3a7 | 1368 | cifs_readv_callback, NULL, rdata, 0, NULL); |
e28bc5b1 JL |
1369 | |
1370 | if (rc == 0) | |
44c58186 | 1371 | cifs_stats_inc(&tcon->stats.cifs_stats.num_reads); |
6993f74a JL |
1372 | else |
1373 | kref_put(&rdata->refcount, cifs_readdata_release); | |
e28bc5b1 JL |
1374 | |
1375 | cifs_small_buf_release(smb); | |
1376 | return rc; | |
1377 | } | |
1378 | ||
1da177e4 | 1379 | int |
6d5786a3 PS |
1380 | CIFSSMBRead(const unsigned int xid, struct cifs_io_parms *io_parms, |
1381 | unsigned int *nbytes, char **buf, int *pbuf_type) | |
1da177e4 LT |
1382 | { |
1383 | int rc = -EACCES; | |
1384 | READ_REQ *pSMB = NULL; | |
1385 | READ_RSP *pSMBr = NULL; | |
1386 | char *pReadData = NULL; | |
bfa0d75a | 1387 | int wct; |
ec637e3f SF |
1388 | int resp_buf_type = 0; |
1389 | struct kvec iov[1]; | |
da502f7d | 1390 | struct kvec rsp_iov; |
d4ffff1f PS |
1391 | __u32 pid = io_parms->pid; |
1392 | __u16 netfid = io_parms->netfid; | |
1393 | __u64 offset = io_parms->offset; | |
96daf2b0 | 1394 | struct cifs_tcon *tcon = io_parms->tcon; |
d4ffff1f | 1395 | unsigned int count = io_parms->length; |
1da177e4 | 1396 | |
f96637be | 1397 | cifs_dbg(FYI, "Reading %d bytes on fid %d\n", count, netfid); |
790fe579 | 1398 | if (tcon->ses->capabilities & CAP_LARGE_FILES) |
bfa0d75a | 1399 | wct = 12; |
4c3130ef | 1400 | else { |
bfa0d75a | 1401 | wct = 10; /* old style read */ |
d4ffff1f | 1402 | if ((offset >> 32) > 0) { |
4c3130ef SF |
1403 | /* can not handle this big offset for old */ |
1404 | return -EIO; | |
1405 | } | |
1406 | } | |
1da177e4 LT |
1407 | |
1408 | *nbytes = 0; | |
ec637e3f | 1409 | rc = small_smb_init(SMB_COM_READ_ANDX, wct, tcon, (void **) &pSMB); |
1da177e4 LT |
1410 | if (rc) |
1411 | return rc; | |
1412 | ||
d4ffff1f PS |
1413 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid); |
1414 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid >> 16)); | |
1415 | ||
1da177e4 LT |
1416 | /* tcon and ses pointer are checked in smb_init */ |
1417 | if (tcon->ses->server == NULL) | |
1418 | return -ECONNABORTED; | |
1419 | ||
ec637e3f | 1420 | pSMB->AndXCommand = 0xFF; /* none */ |
1da177e4 | 1421 | pSMB->Fid = netfid; |
d4ffff1f | 1422 | pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF); |
790fe579 | 1423 | if (wct == 12) |
d4ffff1f | 1424 | pSMB->OffsetHigh = cpu_to_le32(offset >> 32); |
bfa0d75a | 1425 | |
1da177e4 LT |
1426 | pSMB->Remaining = 0; |
1427 | pSMB->MaxCount = cpu_to_le16(count & 0xFFFF); | |
1428 | pSMB->MaxCountHigh = cpu_to_le32(count >> 16); | |
790fe579 | 1429 | if (wct == 12) |
bfa0d75a SF |
1430 | pSMB->ByteCount = 0; /* no need to do le conversion since 0 */ |
1431 | else { | |
1432 | /* old style read */ | |
50c2f753 | 1433 | struct smb_com_readx_req *pSMBW = |
bfa0d75a | 1434 | (struct smb_com_readx_req *)pSMB; |
ec637e3f | 1435 | pSMBW->ByteCount = 0; |
bfa0d75a | 1436 | } |
ec637e3f SF |
1437 | |
1438 | iov[0].iov_base = (char *)pSMB; | |
be8e3b00 | 1439 | iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4; |
da502f7d PS |
1440 | rc = SendReceive2(xid, tcon->ses, iov, 1, &resp_buf_type, |
1441 | CIFS_LOG_ERROR, &rsp_iov); | |
1442 | cifs_small_buf_release(pSMB); | |
44c58186 | 1443 | cifs_stats_inc(&tcon->stats.cifs_stats.num_reads); |
da502f7d | 1444 | pSMBr = (READ_RSP *)rsp_iov.iov_base; |
1da177e4 | 1445 | if (rc) { |
f96637be | 1446 | cifs_dbg(VFS, "Send error in read = %d\n", rc); |
1da177e4 LT |
1447 | } else { |
1448 | int data_length = le16_to_cpu(pSMBr->DataLengthHigh); | |
1449 | data_length = data_length << 16; | |
1450 | data_length += le16_to_cpu(pSMBr->DataLength); | |
1451 | *nbytes = data_length; | |
1452 | ||
1453 | /*check that DataLength would not go beyond end of SMB */ | |
ec637e3f | 1454 | if ((data_length > CIFSMaxBufSize) |
1da177e4 | 1455 | || (data_length > count)) { |
f96637be | 1456 | cifs_dbg(FYI, "bad length %d for count %d\n", |
b6b38f70 | 1457 | data_length, count); |
1da177e4 LT |
1458 | rc = -EIO; |
1459 | *nbytes = 0; | |
1460 | } else { | |
ec637e3f | 1461 | pReadData = (char *) (&pSMBr->hdr.Protocol) + |
26f57364 SF |
1462 | le16_to_cpu(pSMBr->DataOffset); |
1463 | /* if (rc = copy_to_user(buf, pReadData, data_length)) { | |
f96637be | 1464 | cifs_dbg(VFS, "Faulting on read rc = %d\n",rc); |
50c2f753 | 1465 | rc = -EFAULT; |
26f57364 | 1466 | }*/ /* can not use copy_to_user when using page cache*/ |
790fe579 | 1467 | if (*buf) |
50c2f753 | 1468 | memcpy(*buf, pReadData, data_length); |
1da177e4 LT |
1469 | } |
1470 | } | |
1da177e4 | 1471 | |
790fe579 | 1472 | if (*buf) { |
da502f7d | 1473 | free_rsp_buf(resp_buf_type, rsp_iov.iov_base); |
790fe579 | 1474 | } else if (resp_buf_type != CIFS_NO_BUFFER) { |
50c2f753 | 1475 | /* return buffer to caller to free */ |
da502f7d | 1476 | *buf = rsp_iov.iov_base; |
790fe579 | 1477 | if (resp_buf_type == CIFS_SMALL_BUFFER) |
ec637e3f | 1478 | *pbuf_type = CIFS_SMALL_BUFFER; |
790fe579 | 1479 | else if (resp_buf_type == CIFS_LARGE_BUFFER) |
ec637e3f | 1480 | *pbuf_type = CIFS_LARGE_BUFFER; |
6cec2aed | 1481 | } /* else no valid buffer on return - leave as null */ |
ec637e3f SF |
1482 | |
1483 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
1da177e4 LT |
1484 | since file handle passed in no longer valid */ |
1485 | return rc; | |
1486 | } | |
1487 | ||
ec637e3f | 1488 | |
1da177e4 | 1489 | int |
6d5786a3 | 1490 | CIFSSMBWrite(const unsigned int xid, struct cifs_io_parms *io_parms, |
dbbab325 | 1491 | unsigned int *nbytes, const char *buf) |
1da177e4 LT |
1492 | { |
1493 | int rc = -EACCES; | |
1494 | WRITE_REQ *pSMB = NULL; | |
1495 | WRITE_RSP *pSMBr = NULL; | |
1c955187 | 1496 | int bytes_returned, wct; |
1da177e4 LT |
1497 | __u32 bytes_sent; |
1498 | __u16 byte_count; | |
fa2989f4 PS |
1499 | __u32 pid = io_parms->pid; |
1500 | __u16 netfid = io_parms->netfid; | |
1501 | __u64 offset = io_parms->offset; | |
96daf2b0 | 1502 | struct cifs_tcon *tcon = io_parms->tcon; |
fa2989f4 | 1503 | unsigned int count = io_parms->length; |
1da177e4 | 1504 | |
a24e2d7d SF |
1505 | *nbytes = 0; |
1506 | ||
f96637be | 1507 | /* cifs_dbg(FYI, "write at %lld %d bytes\n", offset, count);*/ |
790fe579 | 1508 | if (tcon->ses == NULL) |
1c955187 SF |
1509 | return -ECONNABORTED; |
1510 | ||
790fe579 | 1511 | if (tcon->ses->capabilities & CAP_LARGE_FILES) |
1c955187 | 1512 | wct = 14; |
4c3130ef | 1513 | else { |
1c955187 | 1514 | wct = 12; |
4c3130ef SF |
1515 | if ((offset >> 32) > 0) { |
1516 | /* can not handle big offset for old srv */ | |
1517 | return -EIO; | |
1518 | } | |
1519 | } | |
1c955187 SF |
1520 | |
1521 | rc = smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **) &pSMB, | |
1da177e4 LT |
1522 | (void **) &pSMBr); |
1523 | if (rc) | |
1524 | return rc; | |
fa2989f4 PS |
1525 | |
1526 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid); | |
1527 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid >> 16)); | |
1528 | ||
1da177e4 LT |
1529 | /* tcon and ses pointer are checked in smb_init */ |
1530 | if (tcon->ses->server == NULL) | |
1531 | return -ECONNABORTED; | |
1532 | ||
1533 | pSMB->AndXCommand = 0xFF; /* none */ | |
1534 | pSMB->Fid = netfid; | |
1535 | pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF); | |
790fe579 | 1536 | if (wct == 14) |
1c955187 | 1537 | pSMB->OffsetHigh = cpu_to_le32(offset >> 32); |
50c2f753 | 1538 | |
1da177e4 LT |
1539 | pSMB->Reserved = 0xFFFFFFFF; |
1540 | pSMB->WriteMode = 0; | |
1541 | pSMB->Remaining = 0; | |
1542 | ||
50c2f753 | 1543 | /* Can increase buffer size if buffer is big enough in some cases ie we |
1da177e4 LT |
1544 | can send more if LARGE_WRITE_X capability returned by the server and if |
1545 | our buffer is big enough or if we convert to iovecs on socket writes | |
1546 | and eliminate the copy to the CIFS buffer */ | |
790fe579 | 1547 | if (tcon->ses->capabilities & CAP_LARGE_WRITE_X) { |
1da177e4 LT |
1548 | bytes_sent = min_t(const unsigned int, CIFSMaxBufSize, count); |
1549 | } else { | |
1550 | bytes_sent = (tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE) | |
1551 | & ~0xFF; | |
1552 | } | |
1553 | ||
1554 | if (bytes_sent > count) | |
1555 | bytes_sent = count; | |
1556 | pSMB->DataOffset = | |
50c2f753 | 1557 | cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4); |
790fe579 | 1558 | if (buf) |
61e74801 | 1559 | memcpy(pSMB->Data, buf, bytes_sent); |
dbbab325 | 1560 | else if (count != 0) { |
1da177e4 LT |
1561 | /* No buffer */ |
1562 | cifs_buf_release(pSMB); | |
1563 | return -EINVAL; | |
e30dcf3a | 1564 | } /* else setting file size with write of zero bytes */ |
790fe579 | 1565 | if (wct == 14) |
e30dcf3a | 1566 | byte_count = bytes_sent + 1; /* pad */ |
ad7a2926 | 1567 | else /* wct == 12 */ |
e30dcf3a | 1568 | byte_count = bytes_sent + 5; /* bigger pad, smaller smb hdr */ |
ad7a2926 | 1569 | |
1da177e4 LT |
1570 | pSMB->DataLengthLow = cpu_to_le16(bytes_sent & 0xFFFF); |
1571 | pSMB->DataLengthHigh = cpu_to_le16(bytes_sent >> 16); | |
be8e3b00 | 1572 | inc_rfc1001_len(pSMB, byte_count); |
1c955187 | 1573 | |
790fe579 | 1574 | if (wct == 14) |
1c955187 | 1575 | pSMB->ByteCount = cpu_to_le16(byte_count); |
50c2f753 SF |
1576 | else { /* old style write has byte count 4 bytes earlier |
1577 | so 4 bytes pad */ | |
1578 | struct smb_com_writex_req *pSMBW = | |
1c955187 SF |
1579 | (struct smb_com_writex_req *)pSMB; |
1580 | pSMBW->ByteCount = cpu_to_le16(byte_count); | |
1581 | } | |
1da177e4 LT |
1582 | |
1583 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
dbbab325 | 1584 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
44c58186 | 1585 | cifs_stats_inc(&tcon->stats.cifs_stats.num_writes); |
1da177e4 | 1586 | if (rc) { |
f96637be | 1587 | cifs_dbg(FYI, "Send error in write = %d\n", rc); |
1da177e4 LT |
1588 | } else { |
1589 | *nbytes = le16_to_cpu(pSMBr->CountHigh); | |
1590 | *nbytes = (*nbytes) << 16; | |
1591 | *nbytes += le16_to_cpu(pSMBr->Count); | |
6513a81e SJ |
1592 | |
1593 | /* | |
1594 | * Mask off high 16 bits when bytes written as returned by the | |
1595 | * server is greater than bytes requested by the client. Some | |
1596 | * OS/2 servers are known to set incorrect CountHigh values. | |
1597 | */ | |
1598 | if (*nbytes > count) | |
1599 | *nbytes &= 0xFFFF; | |
1da177e4 LT |
1600 | } |
1601 | ||
1602 | cifs_buf_release(pSMB); | |
1603 | ||
50c2f753 | 1604 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
1605 | since file handle passed in no longer valid */ |
1606 | ||
1607 | return rc; | |
1608 | } | |
1609 | ||
c28c89fc | 1610 | /* |
7c9421e1 | 1611 | * Check the mid_state and signature on received buffer (if any), and queue the |
c28c89fc JL |
1612 | * workqueue completion task. |
1613 | */ | |
1614 | static void | |
1615 | cifs_writev_callback(struct mid_q_entry *mid) | |
1616 | { | |
1617 | struct cifs_writedata *wdata = mid->callback_data; | |
96daf2b0 | 1618 | struct cifs_tcon *tcon = tlink_tcon(wdata->cfile->tlink); |
c28c89fc JL |
1619 | unsigned int written; |
1620 | WRITE_RSP *smb = (WRITE_RSP *)mid->resp_buf; | |
34f4deb7 | 1621 | struct cifs_credits credits = { .value = 1, .instance = 0 }; |
c28c89fc | 1622 | |
7c9421e1 | 1623 | switch (mid->mid_state) { |
c28c89fc JL |
1624 | case MID_RESPONSE_RECEIVED: |
1625 | wdata->result = cifs_check_receive(mid, tcon->ses->server, 0); | |
1626 | if (wdata->result != 0) | |
1627 | break; | |
1628 | ||
1629 | written = le16_to_cpu(smb->CountHigh); | |
1630 | written <<= 16; | |
1631 | written += le16_to_cpu(smb->Count); | |
1632 | /* | |
1633 | * Mask off high 16 bits when bytes written as returned | |
1634 | * by the server is greater than bytes requested by the | |
1635 | * client. OS/2 servers are known to set incorrect | |
1636 | * CountHigh values. | |
1637 | */ | |
1638 | if (written > wdata->bytes) | |
1639 | written &= 0xFFFF; | |
1640 | ||
1641 | if (written < wdata->bytes) | |
1642 | wdata->result = -ENOSPC; | |
1643 | else | |
1644 | wdata->bytes = written; | |
1645 | break; | |
1646 | case MID_REQUEST_SUBMITTED: | |
1647 | case MID_RETRY_NEEDED: | |
1648 | wdata->result = -EAGAIN; | |
1649 | break; | |
1650 | default: | |
1651 | wdata->result = -EIO; | |
1652 | break; | |
1653 | } | |
1654 | ||
da472fc8 | 1655 | queue_work(cifsiod_wq, &wdata->work); |
70f08f91 | 1656 | release_mid(mid); |
34f4deb7 | 1657 | add_credits(tcon->ses->server, &credits, 0); |
c28c89fc JL |
1658 | } |
1659 | ||
1660 | /* cifs_async_writev - send an async write, and set up mid to handle result */ | |
1661 | int | |
4a5c80d7 SF |
1662 | cifs_async_writev(struct cifs_writedata *wdata, |
1663 | void (*release)(struct kref *kref)) | |
c28c89fc | 1664 | { |
eddb079d | 1665 | int rc = -EACCES; |
c28c89fc JL |
1666 | WRITE_REQ *smb = NULL; |
1667 | int wct; | |
96daf2b0 | 1668 | struct cifs_tcon *tcon = tlink_tcon(wdata->cfile->tlink); |
738f9de5 | 1669 | struct kvec iov[2]; |
fec344e3 | 1670 | struct smb_rqst rqst = { }; |
c28c89fc JL |
1671 | |
1672 | if (tcon->ses->capabilities & CAP_LARGE_FILES) { | |
1673 | wct = 14; | |
1674 | } else { | |
1675 | wct = 12; | |
1676 | if (wdata->offset >> 32 > 0) { | |
1677 | /* can not handle big offset for old srv */ | |
1678 | return -EIO; | |
1679 | } | |
1680 | } | |
1681 | ||
1682 | rc = small_smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **)&smb); | |
1683 | if (rc) | |
1684 | goto async_writev_out; | |
1685 | ||
fe5f5d2e JL |
1686 | smb->hdr.Pid = cpu_to_le16((__u16)wdata->pid); |
1687 | smb->hdr.PidHigh = cpu_to_le16((__u16)(wdata->pid >> 16)); | |
fa2989f4 | 1688 | |
c28c89fc | 1689 | smb->AndXCommand = 0xFF; /* none */ |
4b4de76e | 1690 | smb->Fid = wdata->cfile->fid.netfid; |
c28c89fc JL |
1691 | smb->OffsetLow = cpu_to_le32(wdata->offset & 0xFFFFFFFF); |
1692 | if (wct == 14) | |
1693 | smb->OffsetHigh = cpu_to_le32(wdata->offset >> 32); | |
1694 | smb->Reserved = 0xFFFFFFFF; | |
1695 | smb->WriteMode = 0; | |
1696 | smb->Remaining = 0; | |
1697 | ||
1698 | smb->DataOffset = | |
1699 | cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4); | |
1700 | ||
1701 | /* 4 for RFC1001 length + 1 for BCC */ | |
738f9de5 PS |
1702 | iov[0].iov_len = 4; |
1703 | iov[0].iov_base = smb; | |
1704 | iov[1].iov_len = get_rfc1002_length(smb) + 1; | |
1705 | iov[1].iov_base = (char *)smb + 4; | |
c28c89fc | 1706 | |
738f9de5 PS |
1707 | rqst.rq_iov = iov; |
1708 | rqst.rq_nvec = 2; | |
d08089f6 DH |
1709 | rqst.rq_iter = wdata->iter; |
1710 | rqst.rq_iter_size = iov_iter_count(&wdata->iter); | |
c28c89fc | 1711 | |
f96637be JP |
1712 | cifs_dbg(FYI, "async write at %llu %u bytes\n", |
1713 | wdata->offset, wdata->bytes); | |
c28c89fc JL |
1714 | |
1715 | smb->DataLengthLow = cpu_to_le16(wdata->bytes & 0xFFFF); | |
1716 | smb->DataLengthHigh = cpu_to_le16(wdata->bytes >> 16); | |
1717 | ||
1718 | if (wct == 14) { | |
1719 | inc_rfc1001_len(&smb->hdr, wdata->bytes + 1); | |
1720 | put_bcc(wdata->bytes + 1, &smb->hdr); | |
1721 | } else { | |
1722 | /* wct == 12 */ | |
1723 | struct smb_com_writex_req *smbw = | |
1724 | (struct smb_com_writex_req *)smb; | |
1725 | inc_rfc1001_len(&smbw->hdr, wdata->bytes + 5); | |
1726 | put_bcc(wdata->bytes + 5, &smbw->hdr); | |
738f9de5 | 1727 | iov[1].iov_len += 4; /* pad bigger by four bytes */ |
c28c89fc JL |
1728 | } |
1729 | ||
1730 | kref_get(&wdata->refcount); | |
fec344e3 | 1731 | rc = cifs_call_async(tcon->ses->server, &rqst, NULL, |
3349c3a7 | 1732 | cifs_writev_callback, NULL, wdata, 0, NULL); |
c28c89fc JL |
1733 | |
1734 | if (rc == 0) | |
44c58186 | 1735 | cifs_stats_inc(&tcon->stats.cifs_stats.num_writes); |
c28c89fc | 1736 | else |
4a5c80d7 | 1737 | kref_put(&wdata->refcount, release); |
c28c89fc | 1738 | |
c28c89fc JL |
1739 | async_writev_out: |
1740 | cifs_small_buf_release(smb); | |
c28c89fc JL |
1741 | return rc; |
1742 | } | |
1743 | ||
d6e04ae6 | 1744 | int |
6d5786a3 | 1745 | CIFSSMBWrite2(const unsigned int xid, struct cifs_io_parms *io_parms, |
ba9ad725 | 1746 | unsigned int *nbytes, struct kvec *iov, int n_vec) |
1da177e4 | 1747 | { |
136a5dc3 | 1748 | int rc; |
1da177e4 | 1749 | WRITE_REQ *pSMB = NULL; |
ec637e3f | 1750 | int wct; |
d6e04ae6 | 1751 | int smb_hdr_len; |
ec637e3f | 1752 | int resp_buf_type = 0; |
fa2989f4 PS |
1753 | __u32 pid = io_parms->pid; |
1754 | __u16 netfid = io_parms->netfid; | |
1755 | __u64 offset = io_parms->offset; | |
96daf2b0 | 1756 | struct cifs_tcon *tcon = io_parms->tcon; |
fa2989f4 | 1757 | unsigned int count = io_parms->length; |
da502f7d | 1758 | struct kvec rsp_iov; |
1da177e4 | 1759 | |
fbec9ab9 JL |
1760 | *nbytes = 0; |
1761 | ||
f96637be | 1762 | cifs_dbg(FYI, "write2 at %lld %d bytes\n", (long long)offset, count); |
ff7feac9 | 1763 | |
4c3130ef | 1764 | if (tcon->ses->capabilities & CAP_LARGE_FILES) { |
8cc64c6e | 1765 | wct = 14; |
4c3130ef | 1766 | } else { |
8cc64c6e | 1767 | wct = 12; |
4c3130ef SF |
1768 | if ((offset >> 32) > 0) { |
1769 | /* can not handle big offset for old srv */ | |
1770 | return -EIO; | |
1771 | } | |
1772 | } | |
8cc64c6e | 1773 | rc = small_smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **) &pSMB); |
1da177e4 LT |
1774 | if (rc) |
1775 | return rc; | |
fa2989f4 PS |
1776 | |
1777 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid); | |
1778 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid >> 16)); | |
1779 | ||
1da177e4 LT |
1780 | /* tcon and ses pointer are checked in smb_init */ |
1781 | if (tcon->ses->server == NULL) | |
1782 | return -ECONNABORTED; | |
1783 | ||
d6e04ae6 | 1784 | pSMB->AndXCommand = 0xFF; /* none */ |
1da177e4 LT |
1785 | pSMB->Fid = netfid; |
1786 | pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF); | |
790fe579 | 1787 | if (wct == 14) |
8cc64c6e | 1788 | pSMB->OffsetHigh = cpu_to_le32(offset >> 32); |
1da177e4 LT |
1789 | pSMB->Reserved = 0xFFFFFFFF; |
1790 | pSMB->WriteMode = 0; | |
1791 | pSMB->Remaining = 0; | |
d6e04ae6 | 1792 | |
1da177e4 | 1793 | pSMB->DataOffset = |
50c2f753 | 1794 | cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4); |
1da177e4 | 1795 | |
3e84469d SF |
1796 | pSMB->DataLengthLow = cpu_to_le16(count & 0xFFFF); |
1797 | pSMB->DataLengthHigh = cpu_to_le16(count >> 16); | |
be8e3b00 SF |
1798 | /* header + 1 byte pad */ |
1799 | smb_hdr_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 1; | |
790fe579 | 1800 | if (wct == 14) |
be8e3b00 | 1801 | inc_rfc1001_len(pSMB, count + 1); |
8cc64c6e | 1802 | else /* wct == 12 */ |
be8e3b00 | 1803 | inc_rfc1001_len(pSMB, count + 5); /* smb data starts later */ |
790fe579 | 1804 | if (wct == 14) |
8cc64c6e SF |
1805 | pSMB->ByteCount = cpu_to_le16(count + 1); |
1806 | else /* wct == 12 */ /* bigger pad, smaller smb hdr, keep offset ok */ { | |
50c2f753 | 1807 | struct smb_com_writex_req *pSMBW = |
8cc64c6e SF |
1808 | (struct smb_com_writex_req *)pSMB; |
1809 | pSMBW->ByteCount = cpu_to_le16(count + 5); | |
1810 | } | |
3e84469d | 1811 | iov[0].iov_base = pSMB; |
790fe579 | 1812 | if (wct == 14) |
ec637e3f SF |
1813 | iov[0].iov_len = smb_hdr_len + 4; |
1814 | else /* wct == 12 pad bigger by four bytes */ | |
1815 | iov[0].iov_len = smb_hdr_len + 8; | |
50c2f753 | 1816 | |
da502f7d PS |
1817 | rc = SendReceive2(xid, tcon->ses, iov, n_vec + 1, &resp_buf_type, 0, |
1818 | &rsp_iov); | |
1819 | cifs_small_buf_release(pSMB); | |
44c58186 | 1820 | cifs_stats_inc(&tcon->stats.cifs_stats.num_writes); |
1da177e4 | 1821 | if (rc) { |
f96637be | 1822 | cifs_dbg(FYI, "Send error Write2 = %d\n", rc); |
790fe579 | 1823 | } else if (resp_buf_type == 0) { |
ec637e3f SF |
1824 | /* presumably this can not happen, but best to be safe */ |
1825 | rc = -EIO; | |
d6e04ae6 | 1826 | } else { |
da502f7d | 1827 | WRITE_RSP *pSMBr = (WRITE_RSP *)rsp_iov.iov_base; |
d6e04ae6 SF |
1828 | *nbytes = le16_to_cpu(pSMBr->CountHigh); |
1829 | *nbytes = (*nbytes) << 16; | |
1830 | *nbytes += le16_to_cpu(pSMBr->Count); | |
6513a81e SJ |
1831 | |
1832 | /* | |
1833 | * Mask off high 16 bits when bytes written as returned by the | |
1834 | * server is greater than bytes requested by the client. OS/2 | |
1835 | * servers are known to set incorrect CountHigh values. | |
1836 | */ | |
1837 | if (*nbytes > count) | |
1838 | *nbytes &= 0xFFFF; | |
50c2f753 | 1839 | } |
1da177e4 | 1840 | |
da502f7d | 1841 | free_rsp_buf(resp_buf_type, rsp_iov.iov_base); |
1da177e4 | 1842 | |
50c2f753 | 1843 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
1844 | since file handle passed in no longer valid */ |
1845 | ||
1846 | return rc; | |
1847 | } | |
d6e04ae6 | 1848 | |
6d5786a3 PS |
1849 | int cifs_lockv(const unsigned int xid, struct cifs_tcon *tcon, |
1850 | const __u16 netfid, const __u8 lock_type, const __u32 num_unlock, | |
9ee305b7 PS |
1851 | const __u32 num_lock, LOCKING_ANDX_RANGE *buf) |
1852 | { | |
1853 | int rc = 0; | |
1854 | LOCK_REQ *pSMB = NULL; | |
1855 | struct kvec iov[2]; | |
da502f7d | 1856 | struct kvec rsp_iov; |
9ee305b7 PS |
1857 | int resp_buf_type; |
1858 | __u16 count; | |
1859 | ||
f96637be JP |
1860 | cifs_dbg(FYI, "cifs_lockv num lock %d num unlock %d\n", |
1861 | num_lock, num_unlock); | |
9ee305b7 PS |
1862 | |
1863 | rc = small_smb_init(SMB_COM_LOCKING_ANDX, 8, tcon, (void **) &pSMB); | |
1864 | if (rc) | |
1865 | return rc; | |
1866 | ||
1867 | pSMB->Timeout = 0; | |
1868 | pSMB->NumberOfLocks = cpu_to_le16(num_lock); | |
1869 | pSMB->NumberOfUnlocks = cpu_to_le16(num_unlock); | |
1870 | pSMB->LockType = lock_type; | |
1871 | pSMB->AndXCommand = 0xFF; /* none */ | |
1872 | pSMB->Fid = netfid; /* netfid stays le */ | |
1873 | ||
1874 | count = (num_unlock + num_lock) * sizeof(LOCKING_ANDX_RANGE); | |
1875 | inc_rfc1001_len(pSMB, count); | |
1876 | pSMB->ByteCount = cpu_to_le16(count); | |
1877 | ||
1878 | iov[0].iov_base = (char *)pSMB; | |
1879 | iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4 - | |
1880 | (num_unlock + num_lock) * sizeof(LOCKING_ANDX_RANGE); | |
1881 | iov[1].iov_base = (char *)buf; | |
1882 | iov[1].iov_len = (num_unlock + num_lock) * sizeof(LOCKING_ANDX_RANGE); | |
1883 | ||
44c58186 | 1884 | cifs_stats_inc(&tcon->stats.cifs_stats.num_locks); |
392e1c5d RS |
1885 | rc = SendReceive2(xid, tcon->ses, iov, 2, &resp_buf_type, |
1886 | CIFS_NO_RSP_BUF, &rsp_iov); | |
da502f7d | 1887 | cifs_small_buf_release(pSMB); |
9ee305b7 | 1888 | if (rc) |
f96637be | 1889 | cifs_dbg(FYI, "Send error in cifs_lockv = %d\n", rc); |
9ee305b7 PS |
1890 | |
1891 | return rc; | |
1892 | } | |
d6e04ae6 | 1893 | |
1da177e4 | 1894 | int |
6d5786a3 | 1895 | CIFSSMBLock(const unsigned int xid, struct cifs_tcon *tcon, |
03776f45 | 1896 | const __u16 smb_file_id, const __u32 netpid, const __u64 len, |
1da177e4 | 1897 | const __u64 offset, const __u32 numUnlock, |
12fed00d PS |
1898 | const __u32 numLock, const __u8 lockType, |
1899 | const bool waitFlag, const __u8 oplock_level) | |
1da177e4 LT |
1900 | { |
1901 | int rc = 0; | |
1902 | LOCK_REQ *pSMB = NULL; | |
aaa9bbe0 | 1903 | /* LOCK_RSP *pSMBr = NULL; */ /* No response data other than rc to parse */ |
1da177e4 | 1904 | int bytes_returned; |
a891f0f8 | 1905 | int flags = 0; |
1da177e4 LT |
1906 | __u16 count; |
1907 | ||
f96637be JP |
1908 | cifs_dbg(FYI, "CIFSSMBLock timeout %d numLock %d\n", |
1909 | (int)waitFlag, numLock); | |
46810cbf SF |
1910 | rc = small_smb_init(SMB_COM_LOCKING_ANDX, 8, tcon, (void **) &pSMB); |
1911 | ||
1da177e4 LT |
1912 | if (rc) |
1913 | return rc; | |
1914 | ||
790fe579 | 1915 | if (lockType == LOCKING_ANDX_OPLOCK_RELEASE) { |
a891f0f8 | 1916 | /* no response expected */ |
392e1c5d | 1917 | flags = CIFS_NO_SRV_RSP | CIFS_NON_BLOCKING | CIFS_OBREAK_OP; |
1da177e4 | 1918 | pSMB->Timeout = 0; |
4b18f2a9 | 1919 | } else if (waitFlag) { |
a891f0f8 | 1920 | flags = CIFS_BLOCKING_OP; /* blocking operation, no timeout */ |
1da177e4 LT |
1921 | pSMB->Timeout = cpu_to_le32(-1);/* blocking - do not time out */ |
1922 | } else { | |
1923 | pSMB->Timeout = 0; | |
1924 | } | |
1925 | ||
1926 | pSMB->NumberOfLocks = cpu_to_le16(numLock); | |
1927 | pSMB->NumberOfUnlocks = cpu_to_le16(numUnlock); | |
1928 | pSMB->LockType = lockType; | |
12fed00d | 1929 | pSMB->OplockLevel = oplock_level; |
1da177e4 LT |
1930 | pSMB->AndXCommand = 0xFF; /* none */ |
1931 | pSMB->Fid = smb_file_id; /* netfid stays le */ | |
1932 | ||
790fe579 | 1933 | if ((numLock != 0) || (numUnlock != 0)) { |
03776f45 | 1934 | pSMB->Locks[0].Pid = cpu_to_le16(netpid); |
1da177e4 LT |
1935 | /* BB where to store pid high? */ |
1936 | pSMB->Locks[0].LengthLow = cpu_to_le32((u32)len); | |
1937 | pSMB->Locks[0].LengthHigh = cpu_to_le32((u32)(len>>32)); | |
1938 | pSMB->Locks[0].OffsetLow = cpu_to_le32((u32)offset); | |
1939 | pSMB->Locks[0].OffsetHigh = cpu_to_le32((u32)(offset>>32)); | |
1940 | count = sizeof(LOCKING_ANDX_RANGE); | |
1941 | } else { | |
1942 | /* oplock break */ | |
1943 | count = 0; | |
1944 | } | |
be8e3b00 | 1945 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
1946 | pSMB->ByteCount = cpu_to_le16(count); |
1947 | ||
da502f7d | 1948 | if (waitFlag) |
7ee1af76 | 1949 | rc = SendReceiveBlockingLock(xid, tcon, (struct smb_hdr *) pSMB, |
aaa9bbe0 | 1950 | (struct smb_hdr *) pSMB, &bytes_returned); |
da502f7d | 1951 | else |
a891f0f8 | 1952 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *)pSMB, flags); |
da502f7d | 1953 | cifs_small_buf_release(pSMB); |
44c58186 | 1954 | cifs_stats_inc(&tcon->stats.cifs_stats.num_locks); |
ad7a2926 | 1955 | if (rc) |
f96637be | 1956 | cifs_dbg(FYI, "Send error in Lock = %d\n", rc); |
1da177e4 | 1957 | |
50c2f753 | 1958 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
1959 | since file handle passed in no longer valid */ |
1960 | return rc; | |
1961 | } | |
1962 | ||
08547b03 | 1963 | int |
6d5786a3 | 1964 | CIFSSMBPosixLock(const unsigned int xid, struct cifs_tcon *tcon, |
c5fd363d JL |
1965 | const __u16 smb_file_id, const __u32 netpid, |
1966 | const loff_t start_offset, const __u64 len, | |
1967 | struct file_lock *pLockData, const __u16 lock_type, | |
1968 | const bool waitFlag) | |
08547b03 SF |
1969 | { |
1970 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
1971 | struct smb_com_transaction2_sfi_rsp *pSMBr = NULL; | |
08547b03 SF |
1972 | struct cifs_posix_lock *parm_data; |
1973 | int rc = 0; | |
3a5ff61c | 1974 | int timeout = 0; |
08547b03 | 1975 | int bytes_returned = 0; |
133672ef | 1976 | int resp_buf_type = 0; |
08547b03 | 1977 | __u16 params, param_offset, offset, byte_count, count; |
133672ef | 1978 | struct kvec iov[1]; |
da502f7d | 1979 | struct kvec rsp_iov; |
08547b03 | 1980 | |
f96637be | 1981 | cifs_dbg(FYI, "Posix Lock\n"); |
fc94cdb9 | 1982 | |
08547b03 SF |
1983 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
1984 | ||
1985 | if (rc) | |
1986 | return rc; | |
1987 | ||
1988 | pSMBr = (struct smb_com_transaction2_sfi_rsp *)pSMB; | |
1989 | ||
50c2f753 | 1990 | params = 6; |
08547b03 SF |
1991 | pSMB->MaxSetupCount = 0; |
1992 | pSMB->Reserved = 0; | |
1993 | pSMB->Flags = 0; | |
08547b03 SF |
1994 | pSMB->Reserved2 = 0; |
1995 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
1996 | offset = param_offset + params; | |
1997 | ||
08547b03 SF |
1998 | count = sizeof(struct cifs_posix_lock); |
1999 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
ad7a2926 | 2000 | pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB from sess */ |
08547b03 SF |
2001 | pSMB->SetupCount = 1; |
2002 | pSMB->Reserved3 = 0; | |
c5fd363d | 2003 | if (pLockData) |
08547b03 SF |
2004 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); |
2005 | else | |
2006 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
2007 | byte_count = 3 /* pad */ + params + count; | |
2008 | pSMB->DataCount = cpu_to_le16(count); | |
2009 | pSMB->ParameterCount = cpu_to_le16(params); | |
2010 | pSMB->TotalDataCount = pSMB->DataCount; | |
2011 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2012 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
d4dc277c | 2013 | /* SMB offsets are from the beginning of SMB which is 4 bytes in, after RFC1001 field */ |
50c2f753 | 2014 | parm_data = (struct cifs_posix_lock *) |
d4dc277c | 2015 | (((char *)pSMB) + offset + 4); |
08547b03 SF |
2016 | |
2017 | parm_data->lock_type = cpu_to_le16(lock_type); | |
790fe579 | 2018 | if (waitFlag) { |
133672ef | 2019 | timeout = CIFS_BLOCKING_OP; /* blocking operation, no timeout */ |
cec6815a | 2020 | parm_data->lock_flags = cpu_to_le16(1); |
3a5ff61c SF |
2021 | pSMB->Timeout = cpu_to_le32(-1); |
2022 | } else | |
2023 | pSMB->Timeout = 0; | |
2024 | ||
4f6bcec9 | 2025 | parm_data->pid = cpu_to_le32(netpid); |
c5fd363d | 2026 | parm_data->start = cpu_to_le64(start_offset); |
cec6815a | 2027 | parm_data->length = cpu_to_le64(len); /* normalize negative numbers */ |
08547b03 SF |
2028 | |
2029 | pSMB->DataOffset = cpu_to_le16(offset); | |
f26282c9 | 2030 | pSMB->Fid = smb_file_id; |
08547b03 SF |
2031 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_POSIX_LOCK); |
2032 | pSMB->Reserved4 = 0; | |
be8e3b00 | 2033 | inc_rfc1001_len(pSMB, byte_count); |
08547b03 | 2034 | pSMB->ByteCount = cpu_to_le16(byte_count); |
7ee1af76 JA |
2035 | if (waitFlag) { |
2036 | rc = SendReceiveBlockingLock(xid, tcon, (struct smb_hdr *) pSMB, | |
2037 | (struct smb_hdr *) pSMBr, &bytes_returned); | |
2038 | } else { | |
133672ef | 2039 | iov[0].iov_base = (char *)pSMB; |
be8e3b00 | 2040 | iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4; |
133672ef | 2041 | rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovecs */, |
da502f7d PS |
2042 | &resp_buf_type, timeout, &rsp_iov); |
2043 | pSMBr = (struct smb_com_transaction2_sfi_rsp *)rsp_iov.iov_base; | |
7ee1af76 | 2044 | } |
da502f7d | 2045 | cifs_small_buf_release(pSMB); |
7ee1af76 | 2046 | |
08547b03 | 2047 | if (rc) { |
f96637be | 2048 | cifs_dbg(FYI, "Send error in Posix Lock = %d\n", rc); |
c5fd363d | 2049 | } else if (pLockData) { |
fc94cdb9 SF |
2050 | /* lock structure can be returned on get */ |
2051 | __u16 data_offset; | |
2052 | __u16 data_count; | |
2053 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
2054 | ||
820a803f | 2055 | if (rc || get_bcc(&pSMBr->hdr) < sizeof(*parm_data)) { |
fc94cdb9 SF |
2056 | rc = -EIO; /* bad smb */ |
2057 | goto plk_err_exit; | |
2058 | } | |
fc94cdb9 SF |
2059 | data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
2060 | data_count = le16_to_cpu(pSMBr->t2.DataCount); | |
790fe579 | 2061 | if (data_count < sizeof(struct cifs_posix_lock)) { |
fc94cdb9 SF |
2062 | rc = -EIO; |
2063 | goto plk_err_exit; | |
2064 | } | |
2065 | parm_data = (struct cifs_posix_lock *) | |
2066 | ((char *)&pSMBr->hdr.Protocol + data_offset); | |
bc09d141 | 2067 | if (parm_data->lock_type == cpu_to_le16(CIFS_UNLCK)) |
fc94cdb9 | 2068 | pLockData->fl_type = F_UNLCK; |
f05337c6 PS |
2069 | else { |
2070 | if (parm_data->lock_type == | |
bc09d141 | 2071 | cpu_to_le16(CIFS_RDLCK)) |
f05337c6 PS |
2072 | pLockData->fl_type = F_RDLCK; |
2073 | else if (parm_data->lock_type == | |
bc09d141 | 2074 | cpu_to_le16(CIFS_WRLCK)) |
f05337c6 PS |
2075 | pLockData->fl_type = F_WRLCK; |
2076 | ||
5443d130 SF |
2077 | pLockData->fl_start = le64_to_cpu(parm_data->start); |
2078 | pLockData->fl_end = pLockData->fl_start + | |
d80c6984 PA |
2079 | (le64_to_cpu(parm_data->length) ? |
2080 | le64_to_cpu(parm_data->length) - 1 : 0); | |
9d5b86ac | 2081 | pLockData->fl_pid = -le32_to_cpu(parm_data->pid); |
f05337c6 | 2082 | } |
08547b03 | 2083 | } |
50c2f753 | 2084 | |
fc94cdb9 | 2085 | plk_err_exit: |
da502f7d | 2086 | free_rsp_buf(resp_buf_type, rsp_iov.iov_base); |
133672ef | 2087 | |
08547b03 SF |
2088 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
2089 | since file handle passed in no longer valid */ | |
2090 | ||
2091 | return rc; | |
2092 | } | |
2093 | ||
2094 | ||
1da177e4 | 2095 | int |
6d5786a3 | 2096 | CIFSSMBClose(const unsigned int xid, struct cifs_tcon *tcon, int smb_file_id) |
1da177e4 LT |
2097 | { |
2098 | int rc = 0; | |
2099 | CLOSE_REQ *pSMB = NULL; | |
f96637be | 2100 | cifs_dbg(FYI, "In CIFSSMBClose\n"); |
1da177e4 LT |
2101 | |
2102 | /* do not retry on dead session on close */ | |
2103 | rc = small_smb_init(SMB_COM_CLOSE, 3, tcon, (void **) &pSMB); | |
790fe579 | 2104 | if (rc == -EAGAIN) |
1da177e4 LT |
2105 | return 0; |
2106 | if (rc) | |
2107 | return rc; | |
2108 | ||
1da177e4 | 2109 | pSMB->FileID = (__u16) smb_file_id; |
b815f1e5 | 2110 | pSMB->LastWriteTime = 0xFFFFFFFF; |
1da177e4 | 2111 | pSMB->ByteCount = 0; |
792af7b0 | 2112 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
da502f7d | 2113 | cifs_small_buf_release(pSMB); |
44c58186 | 2114 | cifs_stats_inc(&tcon->stats.cifs_stats.num_closes); |
1da177e4 | 2115 | if (rc) { |
790fe579 | 2116 | if (rc != -EINTR) { |
1da177e4 | 2117 | /* EINTR is expected when user ctl-c to kill app */ |
f96637be | 2118 | cifs_dbg(VFS, "Send error in Close = %d\n", rc); |
1da177e4 LT |
2119 | } |
2120 | } | |
2121 | ||
1da177e4 | 2122 | /* Since session is dead, file will be closed on server already */ |
790fe579 | 2123 | if (rc == -EAGAIN) |
1da177e4 LT |
2124 | rc = 0; |
2125 | ||
2126 | return rc; | |
2127 | } | |
2128 | ||
b298f223 | 2129 | int |
6d5786a3 | 2130 | CIFSSMBFlush(const unsigned int xid, struct cifs_tcon *tcon, int smb_file_id) |
b298f223 SF |
2131 | { |
2132 | int rc = 0; | |
2133 | FLUSH_REQ *pSMB = NULL; | |
f96637be | 2134 | cifs_dbg(FYI, "In CIFSSMBFlush\n"); |
b298f223 SF |
2135 | |
2136 | rc = small_smb_init(SMB_COM_FLUSH, 1, tcon, (void **) &pSMB); | |
2137 | if (rc) | |
2138 | return rc; | |
2139 | ||
2140 | pSMB->FileID = (__u16) smb_file_id; | |
2141 | pSMB->ByteCount = 0; | |
792af7b0 | 2142 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
da502f7d | 2143 | cifs_small_buf_release(pSMB); |
44c58186 | 2144 | cifs_stats_inc(&tcon->stats.cifs_stats.num_flushes); |
b298f223 | 2145 | if (rc) |
f96637be | 2146 | cifs_dbg(VFS, "Send error in Flush = %d\n", rc); |
b298f223 SF |
2147 | |
2148 | return rc; | |
2149 | } | |
2150 | ||
1da177e4 | 2151 | int |
6d5786a3 | 2152 | CIFSSMBRename(const unsigned int xid, struct cifs_tcon *tcon, |
8ceb9843 PS |
2153 | const char *from_name, const char *to_name, |
2154 | struct cifs_sb_info *cifs_sb) | |
1da177e4 LT |
2155 | { |
2156 | int rc = 0; | |
2157 | RENAME_REQ *pSMB = NULL; | |
2158 | RENAME_RSP *pSMBr = NULL; | |
2159 | int bytes_returned; | |
2160 | int name_len, name_len2; | |
2161 | __u16 count; | |
2baa2682 | 2162 | int remap = cifs_remap(cifs_sb); |
1da177e4 | 2163 | |
f96637be | 2164 | cifs_dbg(FYI, "In CIFSSMBRename\n"); |
1da177e4 LT |
2165 | renameRetry: |
2166 | rc = smb_init(SMB_COM_RENAME, 1, tcon, (void **) &pSMB, | |
2167 | (void **) &pSMBr); | |
2168 | if (rc) | |
2169 | return rc; | |
2170 | ||
2171 | pSMB->BufferFormat = 0x04; | |
2172 | pSMB->SearchAttributes = | |
2173 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
2174 | ATTR_DIRECTORY); | |
2175 | ||
2176 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
8ceb9843 PS |
2177 | name_len = cifsConvertToUTF16((__le16 *) pSMB->OldFileName, |
2178 | from_name, PATH_MAX, | |
2179 | cifs_sb->local_nls, remap); | |
1da177e4 LT |
2180 | name_len++; /* trailing null */ |
2181 | name_len *= 2; | |
2182 | pSMB->OldFileName[name_len] = 0x04; /* pad */ | |
2183 | /* protocol requires ASCII signature byte on Unicode string */ | |
2184 | pSMB->OldFileName[name_len + 1] = 0x00; | |
2185 | name_len2 = | |
acbbb76a | 2186 | cifsConvertToUTF16((__le16 *)&pSMB->OldFileName[name_len+2], |
8ceb9843 PS |
2187 | to_name, PATH_MAX, cifs_sb->local_nls, |
2188 | remap); | |
1da177e4 LT |
2189 | name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
2190 | name_len2 *= 2; /* convert to bytes */ | |
340625e6 RS |
2191 | } else { |
2192 | name_len = copy_path_name(pSMB->OldFileName, from_name); | |
2193 | name_len2 = copy_path_name(pSMB->OldFileName+name_len+1, to_name); | |
1da177e4 | 2194 | pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ |
1da177e4 LT |
2195 | name_len2++; /* signature byte */ |
2196 | } | |
2197 | ||
2198 | count = 1 /* 1st signature byte */ + name_len + name_len2; | |
be8e3b00 | 2199 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
2200 | pSMB->ByteCount = cpu_to_le16(count); |
2201 | ||
2202 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2203 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 2204 | cifs_stats_inc(&tcon->stats.cifs_stats.num_renames); |
ad7a2926 | 2205 | if (rc) |
f96637be | 2206 | cifs_dbg(FYI, "Send error in rename = %d\n", rc); |
1da177e4 | 2207 | |
1da177e4 LT |
2208 | cifs_buf_release(pSMB); |
2209 | ||
2210 | if (rc == -EAGAIN) | |
2211 | goto renameRetry; | |
2212 | ||
2213 | return rc; | |
2214 | } | |
2215 | ||
6d5786a3 | 2216 | int CIFSSMBRenameOpenFile(const unsigned int xid, struct cifs_tcon *pTcon, |
391e5755 | 2217 | int netfid, const char *target_name, |
50c2f753 | 2218 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
2219 | { |
2220 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
2221 | struct smb_com_transaction2_sfi_rsp *pSMBr = NULL; | |
50c2f753 | 2222 | struct set_file_rename *rename_info; |
1da177e4 LT |
2223 | char *data_offset; |
2224 | char dummy_string[30]; | |
2225 | int rc = 0; | |
2226 | int bytes_returned = 0; | |
2227 | int len_of_str; | |
2228 | __u16 params, param_offset, offset, count, byte_count; | |
2229 | ||
f96637be | 2230 | cifs_dbg(FYI, "Rename to File by handle\n"); |
1da177e4 LT |
2231 | rc = smb_init(SMB_COM_TRANSACTION2, 15, pTcon, (void **) &pSMB, |
2232 | (void **) &pSMBr); | |
2233 | if (rc) | |
2234 | return rc; | |
2235 | ||
2236 | params = 6; | |
2237 | pSMB->MaxSetupCount = 0; | |
2238 | pSMB->Reserved = 0; | |
2239 | pSMB->Flags = 0; | |
2240 | pSMB->Timeout = 0; | |
2241 | pSMB->Reserved2 = 0; | |
2242 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
2243 | offset = param_offset + params; | |
2244 | ||
f371793d SF |
2245 | /* SMB offsets are from the beginning of SMB which is 4 bytes in, after RFC1001 field */ |
2246 | data_offset = (char *)(pSMB) + offset + 4; | |
1da177e4 LT |
2247 | rename_info = (struct set_file_rename *) data_offset; |
2248 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
ad7a2926 | 2249 | pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB from sess */ |
1da177e4 LT |
2250 | pSMB->SetupCount = 1; |
2251 | pSMB->Reserved3 = 0; | |
2252 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
2253 | byte_count = 3 /* pad */ + params; | |
2254 | pSMB->ParameterCount = cpu_to_le16(params); | |
2255 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2256 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
2257 | pSMB->DataOffset = cpu_to_le16(offset); | |
2258 | /* construct random name ".cifs_tmp<inodenum><mid>" */ | |
2259 | rename_info->overwrite = cpu_to_le32(1); | |
2260 | rename_info->root_fid = 0; | |
2261 | /* unicode only call */ | |
790fe579 | 2262 | if (target_name == NULL) { |
50c2f753 | 2263 | sprintf(dummy_string, "cifs%x", pSMB->hdr.Mid); |
acbbb76a SF |
2264 | len_of_str = |
2265 | cifsConvertToUTF16((__le16 *)rename_info->target_name, | |
737b758c | 2266 | dummy_string, 24, nls_codepage, remap); |
1da177e4 | 2267 | } else { |
acbbb76a SF |
2268 | len_of_str = |
2269 | cifsConvertToUTF16((__le16 *)rename_info->target_name, | |
50c2f753 SF |
2270 | target_name, PATH_MAX, nls_codepage, |
2271 | remap); | |
1da177e4 LT |
2272 | } |
2273 | rename_info->target_name_len = cpu_to_le32(2 * len_of_str); | |
d7173623 | 2274 | count = sizeof(struct set_file_rename) + (2 * len_of_str); |
1da177e4 LT |
2275 | byte_count += count; |
2276 | pSMB->DataCount = cpu_to_le16(count); | |
2277 | pSMB->TotalDataCount = pSMB->DataCount; | |
2278 | pSMB->Fid = netfid; | |
2279 | pSMB->InformationLevel = | |
2280 | cpu_to_le16(SMB_SET_FILE_RENAME_INFORMATION); | |
2281 | pSMB->Reserved4 = 0; | |
be8e3b00 | 2282 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
2283 | pSMB->ByteCount = cpu_to_le16(byte_count); |
2284 | rc = SendReceive(xid, pTcon->ses, (struct smb_hdr *) pSMB, | |
50c2f753 | 2285 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
44c58186 | 2286 | cifs_stats_inc(&pTcon->stats.cifs_stats.num_t2renames); |
ad7a2926 | 2287 | if (rc) |
f96637be JP |
2288 | cifs_dbg(FYI, "Send error in Rename (by file handle) = %d\n", |
2289 | rc); | |
a5a2b489 | 2290 | |
1da177e4 LT |
2291 | cifs_buf_release(pSMB); |
2292 | ||
2293 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
2294 | since file handle passed in no longer valid */ | |
2295 | ||
2296 | return rc; | |
2297 | } | |
2298 | ||
2299 | int | |
6d5786a3 PS |
2300 | CIFSSMBCopy(const unsigned int xid, struct cifs_tcon *tcon, |
2301 | const char *fromName, const __u16 target_tid, const char *toName, | |
2302 | const int flags, const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
2303 | { |
2304 | int rc = 0; | |
2305 | COPY_REQ *pSMB = NULL; | |
2306 | COPY_RSP *pSMBr = NULL; | |
2307 | int bytes_returned; | |
2308 | int name_len, name_len2; | |
2309 | __u16 count; | |
2310 | ||
f96637be | 2311 | cifs_dbg(FYI, "In CIFSSMBCopy\n"); |
1da177e4 LT |
2312 | copyRetry: |
2313 | rc = smb_init(SMB_COM_COPY, 1, tcon, (void **) &pSMB, | |
2314 | (void **) &pSMBr); | |
2315 | if (rc) | |
2316 | return rc; | |
2317 | ||
2318 | pSMB->BufferFormat = 0x04; | |
2319 | pSMB->Tid2 = target_tid; | |
2320 | ||
2321 | pSMB->Flags = cpu_to_le16(flags & COPY_TREE); | |
2322 | ||
2323 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
acbbb76a SF |
2324 | name_len = cifsConvertToUTF16((__le16 *) pSMB->OldFileName, |
2325 | fromName, PATH_MAX, nls_codepage, | |
2326 | remap); | |
1da177e4 LT |
2327 | name_len++; /* trailing null */ |
2328 | name_len *= 2; | |
2329 | pSMB->OldFileName[name_len] = 0x04; /* pad */ | |
2330 | /* protocol requires ASCII signature byte on Unicode string */ | |
2331 | pSMB->OldFileName[name_len + 1] = 0x00; | |
50c2f753 | 2332 | name_len2 = |
acbbb76a SF |
2333 | cifsConvertToUTF16((__le16 *)&pSMB->OldFileName[name_len+2], |
2334 | toName, PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
2335 | name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
2336 | name_len2 *= 2; /* convert to bytes */ | |
340625e6 RS |
2337 | } else { |
2338 | name_len = copy_path_name(pSMB->OldFileName, fromName); | |
1da177e4 | 2339 | pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ |
340625e6 | 2340 | name_len2 = copy_path_name(pSMB->OldFileName+name_len+1, toName); |
1da177e4 LT |
2341 | name_len2++; /* signature byte */ |
2342 | } | |
2343 | ||
2344 | count = 1 /* 1st signature byte */ + name_len + name_len2; | |
be8e3b00 | 2345 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
2346 | pSMB->ByteCount = cpu_to_le16(count); |
2347 | ||
2348 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2349 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
2350 | if (rc) { | |
f96637be JP |
2351 | cifs_dbg(FYI, "Send error in copy = %d with %d files copied\n", |
2352 | rc, le16_to_cpu(pSMBr->CopyCount)); | |
1da177e4 | 2353 | } |
0d817bc0 | 2354 | cifs_buf_release(pSMB); |
1da177e4 LT |
2355 | |
2356 | if (rc == -EAGAIN) | |
2357 | goto copyRetry; | |
2358 | ||
2359 | return rc; | |
2360 | } | |
2361 | ||
2362 | int | |
6d5786a3 | 2363 | CIFSUnixCreateSymLink(const unsigned int xid, struct cifs_tcon *tcon, |
1da177e4 | 2364 | const char *fromName, const char *toName, |
bc8ebdc4 | 2365 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
2366 | { |
2367 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
2368 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
2369 | char *data_offset; | |
2370 | int name_len; | |
2371 | int name_len_target; | |
2372 | int rc = 0; | |
2373 | int bytes_returned = 0; | |
2374 | __u16 params, param_offset, offset, byte_count; | |
2375 | ||
f96637be | 2376 | cifs_dbg(FYI, "In Symlink Unix style\n"); |
1da177e4 LT |
2377 | createSymLinkRetry: |
2378 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2379 | (void **) &pSMBr); | |
2380 | if (rc) | |
2381 | return rc; | |
2382 | ||
2383 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2384 | name_len = | |
bc8ebdc4 NA |
2385 | cifsConvertToUTF16((__le16 *) pSMB->FileName, fromName, |
2386 | /* find define for this maxpathcomponent */ | |
2387 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
2388 | name_len++; /* trailing null */ |
2389 | name_len *= 2; | |
2390 | ||
340625e6 RS |
2391 | } else { |
2392 | name_len = copy_path_name(pSMB->FileName, fromName); | |
1da177e4 LT |
2393 | } |
2394 | params = 6 + name_len; | |
2395 | pSMB->MaxSetupCount = 0; | |
2396 | pSMB->Reserved = 0; | |
2397 | pSMB->Flags = 0; | |
2398 | pSMB->Timeout = 0; | |
2399 | pSMB->Reserved2 = 0; | |
2400 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 2401 | InformationLevel) - 4; |
1da177e4 LT |
2402 | offset = param_offset + params; |
2403 | ||
ded2d99c SF |
2404 | /* SMB offsets are from the beginning of SMB which is 4 bytes in, after RFC1001 field */ |
2405 | data_offset = (char *)pSMB + offset + 4; | |
1da177e4 LT |
2406 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
2407 | name_len_target = | |
bc8ebdc4 NA |
2408 | cifsConvertToUTF16((__le16 *) data_offset, toName, |
2409 | /* find define for this maxpathcomponent */ | |
2410 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
2411 | name_len_target++; /* trailing null */ |
2412 | name_len_target *= 2; | |
340625e6 RS |
2413 | } else { |
2414 | name_len_target = copy_path_name(data_offset, toName); | |
1da177e4 LT |
2415 | } |
2416 | ||
2417 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
2418 | /* BB find exact max on data count below from sess */ | |
2419 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
2420 | pSMB->SetupCount = 1; | |
2421 | pSMB->Reserved3 = 0; | |
2422 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
2423 | byte_count = 3 /* pad */ + params + name_len_target; | |
2424 | pSMB->DataCount = cpu_to_le16(name_len_target); | |
2425 | pSMB->ParameterCount = cpu_to_le16(params); | |
2426 | pSMB->TotalDataCount = pSMB->DataCount; | |
2427 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2428 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
2429 | pSMB->DataOffset = cpu_to_le16(offset); | |
2430 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_LINK); | |
2431 | pSMB->Reserved4 = 0; | |
be8e3b00 | 2432 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
2433 | pSMB->ByteCount = cpu_to_le16(byte_count); |
2434 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2435 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 2436 | cifs_stats_inc(&tcon->stats.cifs_stats.num_symlinks); |
ad7a2926 | 2437 | if (rc) |
f96637be JP |
2438 | cifs_dbg(FYI, "Send error in SetPathInfo create symlink = %d\n", |
2439 | rc); | |
1da177e4 | 2440 | |
0d817bc0 | 2441 | cifs_buf_release(pSMB); |
1da177e4 LT |
2442 | |
2443 | if (rc == -EAGAIN) | |
2444 | goto createSymLinkRetry; | |
2445 | ||
2446 | return rc; | |
2447 | } | |
2448 | ||
2449 | int | |
6d5786a3 | 2450 | CIFSUnixCreateHardLink(const unsigned int xid, struct cifs_tcon *tcon, |
1da177e4 | 2451 | const char *fromName, const char *toName, |
737b758c | 2452 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
2453 | { |
2454 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
2455 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
2456 | char *data_offset; | |
2457 | int name_len; | |
2458 | int name_len_target; | |
2459 | int rc = 0; | |
2460 | int bytes_returned = 0; | |
2461 | __u16 params, param_offset, offset, byte_count; | |
2462 | ||
f96637be | 2463 | cifs_dbg(FYI, "In Create Hard link Unix style\n"); |
1da177e4 LT |
2464 | createHardLinkRetry: |
2465 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2466 | (void **) &pSMBr); | |
2467 | if (rc) | |
2468 | return rc; | |
2469 | ||
2470 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
acbbb76a SF |
2471 | name_len = cifsConvertToUTF16((__le16 *) pSMB->FileName, toName, |
2472 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
2473 | name_len++; /* trailing null */ |
2474 | name_len *= 2; | |
2475 | ||
340625e6 RS |
2476 | } else { |
2477 | name_len = copy_path_name(pSMB->FileName, toName); | |
1da177e4 LT |
2478 | } |
2479 | params = 6 + name_len; | |
2480 | pSMB->MaxSetupCount = 0; | |
2481 | pSMB->Reserved = 0; | |
2482 | pSMB->Flags = 0; | |
2483 | pSMB->Timeout = 0; | |
2484 | pSMB->Reserved2 = 0; | |
2485 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 2486 | InformationLevel) - 4; |
1da177e4 LT |
2487 | offset = param_offset + params; |
2488 | ||
819f916c SF |
2489 | /* SMB offsets are from the beginning of SMB which is 4 bytes in, after RFC1001 field */ |
2490 | data_offset = (char *)pSMB + offset + 4; | |
1da177e4 LT |
2491 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
2492 | name_len_target = | |
acbbb76a SF |
2493 | cifsConvertToUTF16((__le16 *) data_offset, fromName, |
2494 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
2495 | name_len_target++; /* trailing null */ |
2496 | name_len_target *= 2; | |
340625e6 RS |
2497 | } else { |
2498 | name_len_target = copy_path_name(data_offset, fromName); | |
1da177e4 LT |
2499 | } |
2500 | ||
2501 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
2502 | /* BB find exact max on data count below from sess*/ | |
2503 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
2504 | pSMB->SetupCount = 1; | |
2505 | pSMB->Reserved3 = 0; | |
2506 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
2507 | byte_count = 3 /* pad */ + params + name_len_target; | |
2508 | pSMB->ParameterCount = cpu_to_le16(params); | |
2509 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2510 | pSMB->DataCount = cpu_to_le16(name_len_target); | |
2511 | pSMB->TotalDataCount = pSMB->DataCount; | |
2512 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
2513 | pSMB->DataOffset = cpu_to_le16(offset); | |
2514 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_HLINK); | |
2515 | pSMB->Reserved4 = 0; | |
be8e3b00 | 2516 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
2517 | pSMB->ByteCount = cpu_to_le16(byte_count); |
2518 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2519 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 2520 | cifs_stats_inc(&tcon->stats.cifs_stats.num_hardlinks); |
ad7a2926 | 2521 | if (rc) |
f96637be JP |
2522 | cifs_dbg(FYI, "Send error in SetPathInfo (hard link) = %d\n", |
2523 | rc); | |
1da177e4 LT |
2524 | |
2525 | cifs_buf_release(pSMB); | |
2526 | if (rc == -EAGAIN) | |
2527 | goto createHardLinkRetry; | |
2528 | ||
2529 | return rc; | |
2530 | } | |
2531 | ||
2532 | int | |
6d5786a3 | 2533 | CIFSCreateHardLink(const unsigned int xid, struct cifs_tcon *tcon, |
d6e906f1 SF |
2534 | const char *from_name, const char *to_name, |
2535 | struct cifs_sb_info *cifs_sb) | |
1da177e4 LT |
2536 | { |
2537 | int rc = 0; | |
2538 | NT_RENAME_REQ *pSMB = NULL; | |
2539 | RENAME_RSP *pSMBr = NULL; | |
2540 | int bytes_returned; | |
2541 | int name_len, name_len2; | |
2542 | __u16 count; | |
2baa2682 | 2543 | int remap = cifs_remap(cifs_sb); |
1da177e4 | 2544 | |
f96637be | 2545 | cifs_dbg(FYI, "In CIFSCreateHardLink\n"); |
1da177e4 LT |
2546 | winCreateHardLinkRetry: |
2547 | ||
2548 | rc = smb_init(SMB_COM_NT_RENAME, 4, tcon, (void **) &pSMB, | |
2549 | (void **) &pSMBr); | |
2550 | if (rc) | |
2551 | return rc; | |
2552 | ||
2553 | pSMB->SearchAttributes = | |
2554 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
2555 | ATTR_DIRECTORY); | |
2556 | pSMB->Flags = cpu_to_le16(CREATE_HARD_LINK); | |
2557 | pSMB->ClusterCount = 0; | |
2558 | ||
2559 | pSMB->BufferFormat = 0x04; | |
2560 | ||
2561 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2562 | name_len = | |
d6e906f1 SF |
2563 | cifsConvertToUTF16((__le16 *) pSMB->OldFileName, from_name, |
2564 | PATH_MAX, cifs_sb->local_nls, remap); | |
1da177e4 LT |
2565 | name_len++; /* trailing null */ |
2566 | name_len *= 2; | |
fcc7c09d JL |
2567 | |
2568 | /* protocol specifies ASCII buffer format (0x04) for unicode */ | |
2569 | pSMB->OldFileName[name_len] = 0x04; | |
2570 | pSMB->OldFileName[name_len + 1] = 0x00; /* pad */ | |
1da177e4 | 2571 | name_len2 = |
acbbb76a | 2572 | cifsConvertToUTF16((__le16 *)&pSMB->OldFileName[name_len+2], |
d6e906f1 SF |
2573 | to_name, PATH_MAX, cifs_sb->local_nls, |
2574 | remap); | |
1da177e4 LT |
2575 | name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; |
2576 | name_len2 *= 2; /* convert to bytes */ | |
340625e6 RS |
2577 | } else { |
2578 | name_len = copy_path_name(pSMB->OldFileName, from_name); | |
1da177e4 | 2579 | pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ |
340625e6 | 2580 | name_len2 = copy_path_name(pSMB->OldFileName+name_len+1, to_name); |
1da177e4 LT |
2581 | name_len2++; /* signature byte */ |
2582 | } | |
2583 | ||
2584 | count = 1 /* string type byte */ + name_len + name_len2; | |
be8e3b00 | 2585 | inc_rfc1001_len(pSMB, count); |
1da177e4 LT |
2586 | pSMB->ByteCount = cpu_to_le16(count); |
2587 | ||
2588 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2589 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 2590 | cifs_stats_inc(&tcon->stats.cifs_stats.num_hardlinks); |
ad7a2926 | 2591 | if (rc) |
f96637be | 2592 | cifs_dbg(FYI, "Send error in hard link (NT rename) = %d\n", rc); |
ad7a2926 | 2593 | |
1da177e4 LT |
2594 | cifs_buf_release(pSMB); |
2595 | if (rc == -EAGAIN) | |
2596 | goto winCreateHardLinkRetry; | |
2597 | ||
2598 | return rc; | |
2599 | } | |
2600 | ||
2601 | int | |
6d5786a3 | 2602 | CIFSSMBUnixQuerySymLink(const unsigned int xid, struct cifs_tcon *tcon, |
460b9696 | 2603 | const unsigned char *searchName, char **symlinkinfo, |
bc8ebdc4 | 2604 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
2605 | { |
2606 | /* SMB_QUERY_FILE_UNIX_LINK */ | |
2607 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
2608 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
2609 | int rc = 0; | |
2610 | int bytes_returned; | |
2611 | int name_len; | |
2612 | __u16 params, byte_count; | |
460b9696 | 2613 | char *data_start; |
1da177e4 | 2614 | |
f96637be | 2615 | cifs_dbg(FYI, "In QPathSymLinkInfo (Unix) for path %s\n", searchName); |
1da177e4 LT |
2616 | |
2617 | querySymLinkRetry: | |
2618 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2619 | (void **) &pSMBr); | |
2620 | if (rc) | |
2621 | return rc; | |
2622 | ||
2623 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2624 | name_len = | |
bc8ebdc4 NA |
2625 | cifsConvertToUTF16((__le16 *) pSMB->FileName, |
2626 | searchName, PATH_MAX, nls_codepage, | |
2627 | remap); | |
1da177e4 LT |
2628 | name_len++; /* trailing null */ |
2629 | name_len *= 2; | |
340625e6 RS |
2630 | } else { |
2631 | name_len = copy_path_name(pSMB->FileName, searchName); | |
1da177e4 LT |
2632 | } |
2633 | ||
2634 | params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; | |
2635 | pSMB->TotalDataCount = 0; | |
2636 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
46a7574c | 2637 | pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize); |
1da177e4 LT |
2638 | pSMB->MaxSetupCount = 0; |
2639 | pSMB->Reserved = 0; | |
2640 | pSMB->Flags = 0; | |
2641 | pSMB->Timeout = 0; | |
2642 | pSMB->Reserved2 = 0; | |
2643 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 2644 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
2645 | pSMB->DataCount = 0; |
2646 | pSMB->DataOffset = 0; | |
2647 | pSMB->SetupCount = 1; | |
2648 | pSMB->Reserved3 = 0; | |
2649 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
2650 | byte_count = params + 1 /* pad */ ; | |
2651 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
2652 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
2653 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_LINK); | |
2654 | pSMB->Reserved4 = 0; | |
be8e3b00 | 2655 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
2656 | pSMB->ByteCount = cpu_to_le16(byte_count); |
2657 | ||
2658 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2659 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
2660 | if (rc) { | |
f96637be | 2661 | cifs_dbg(FYI, "Send error in QuerySymLinkInfo = %d\n", rc); |
1da177e4 LT |
2662 | } else { |
2663 | /* decode response */ | |
2664 | ||
2665 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
1da177e4 | 2666 | /* BB also check enough total bytes returned */ |
820a803f | 2667 | if (rc || get_bcc(&pSMBr->hdr) < 2) |
460b9696 | 2668 | rc = -EIO; |
1da177e4 | 2669 | else { |
0e0d2cf3 | 2670 | bool is_unicode; |
460b9696 JL |
2671 | u16 count = le16_to_cpu(pSMBr->t2.DataCount); |
2672 | ||
2673 | data_start = ((char *) &pSMBr->hdr.Protocol) + | |
2674 | le16_to_cpu(pSMBr->t2.DataOffset); | |
1da177e4 | 2675 | |
0e0d2cf3 SF |
2676 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) |
2677 | is_unicode = true; | |
2678 | else | |
2679 | is_unicode = false; | |
2680 | ||
737b758c | 2681 | /* BB FIXME investigate remapping reserved chars here */ |
acbbb76a SF |
2682 | *symlinkinfo = cifs_strndup_from_utf16(data_start, |
2683 | count, is_unicode, nls_codepage); | |
8b6427a2 | 2684 | if (!*symlinkinfo) |
460b9696 | 2685 | rc = -ENOMEM; |
1da177e4 LT |
2686 | } |
2687 | } | |
2688 | cifs_buf_release(pSMB); | |
2689 | if (rc == -EAGAIN) | |
2690 | goto querySymLinkRetry; | |
2691 | return rc; | |
2692 | } | |
2693 | ||
c52a9554 SF |
2694 | /* |
2695 | * Recent Windows versions now create symlinks more frequently | |
2696 | * and they use the "reparse point" mechanism below. We can of course | |
2697 | * do symlinks nicely to Samba and other servers which support the | |
2698 | * CIFS Unix Extensions and we can also do SFU symlinks and "client only" | |
2699 | * "MF" symlinks optionally, but for recent Windows we really need to | |
2700 | * reenable the code below and fix the cifs_symlink callers to handle this. | |
2701 | * In the interim this code has been moved to its own config option so | |
2702 | * it is not compiled in by default until callers fixed up and more tested. | |
2703 | */ | |
1da177e4 | 2704 | int |
d244bf2d PS |
2705 | CIFSSMBQuerySymLink(const unsigned int xid, struct cifs_tcon *tcon, |
2706 | __u16 fid, char **symlinkinfo, | |
2707 | const struct nls_table *nls_codepage) | |
1da177e4 LT |
2708 | { |
2709 | int rc = 0; | |
2710 | int bytes_returned; | |
50c2f753 SF |
2711 | struct smb_com_transaction_ioctl_req *pSMB; |
2712 | struct smb_com_transaction_ioctl_rsp *pSMBr; | |
d244bf2d PS |
2713 | bool is_unicode; |
2714 | unsigned int sub_len; | |
2715 | char *sub_start; | |
c31f3307 SF |
2716 | struct reparse_symlink_data *reparse_buf; |
2717 | struct reparse_posix_data *posix_buf; | |
d244bf2d PS |
2718 | __u32 data_offset, data_count; |
2719 | char *end_of_smb; | |
2720 | ||
2721 | cifs_dbg(FYI, "In Windows reparse style QueryLink for fid %u\n", fid); | |
1da177e4 LT |
2722 | rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB, |
2723 | (void **) &pSMBr); | |
2724 | if (rc) | |
2725 | return rc; | |
2726 | ||
2727 | pSMB->TotalParameterCount = 0 ; | |
2728 | pSMB->TotalDataCount = 0; | |
2729 | pSMB->MaxParameterCount = cpu_to_le32(2); | |
2730 | /* BB find exact data count max from sess structure BB */ | |
c974befa | 2731 | pSMB->MaxDataCount = cpu_to_le32(CIFSMaxBufSize & 0xFFFFFF00); |
1da177e4 LT |
2732 | pSMB->MaxSetupCount = 4; |
2733 | pSMB->Reserved = 0; | |
2734 | pSMB->ParameterOffset = 0; | |
2735 | pSMB->DataCount = 0; | |
2736 | pSMB->DataOffset = 0; | |
2737 | pSMB->SetupCount = 4; | |
2738 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_IOCTL); | |
2739 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
2740 | pSMB->FunctionCode = cpu_to_le32(FSCTL_GET_REPARSE_POINT); | |
2741 | pSMB->IsFsctl = 1; /* FSCTL */ | |
2742 | pSMB->IsRootFlag = 0; | |
2743 | pSMB->Fid = fid; /* file handle always le */ | |
2744 | pSMB->ByteCount = 0; | |
2745 | ||
2746 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2747 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
2748 | if (rc) { | |
f96637be | 2749 | cifs_dbg(FYI, "Send error in QueryReparseLinkInfo = %d\n", rc); |
d244bf2d PS |
2750 | goto qreparse_out; |
2751 | } | |
2752 | ||
2753 | data_offset = le32_to_cpu(pSMBr->DataOffset); | |
2754 | data_count = le32_to_cpu(pSMBr->DataCount); | |
2755 | if (get_bcc(&pSMBr->hdr) < 2 || data_offset > 512) { | |
2756 | /* BB also check enough total bytes returned */ | |
2757 | rc = -EIO; /* bad smb */ | |
2758 | goto qreparse_out; | |
2759 | } | |
2760 | if (!data_count || (data_count > 2048)) { | |
2761 | rc = -EIO; | |
2762 | cifs_dbg(FYI, "Invalid return data count on get reparse info ioctl\n"); | |
2763 | goto qreparse_out; | |
2764 | } | |
2765 | end_of_smb = 2 + get_bcc(&pSMBr->hdr) + (char *)&pSMBr->ByteCount; | |
c31f3307 | 2766 | reparse_buf = (struct reparse_symlink_data *) |
d244bf2d PS |
2767 | ((char *)&pSMBr->hdr.Protocol + data_offset); |
2768 | if ((char *)reparse_buf >= end_of_smb) { | |
2769 | rc = -EIO; | |
2770 | goto qreparse_out; | |
1da177e4 | 2771 | } |
c31f3307 SF |
2772 | if (reparse_buf->ReparseTag == cpu_to_le32(IO_REPARSE_TAG_NFS)) { |
2773 | cifs_dbg(FYI, "NFS style reparse tag\n"); | |
2774 | posix_buf = (struct reparse_posix_data *)reparse_buf; | |
2775 | ||
2776 | if (posix_buf->InodeType != cpu_to_le64(NFS_SPECFILE_LNK)) { | |
2777 | cifs_dbg(FYI, "unsupported file type 0x%llx\n", | |
2778 | le64_to_cpu(posix_buf->InodeType)); | |
2779 | rc = -EOPNOTSUPP; | |
2780 | goto qreparse_out; | |
2781 | } | |
2782 | is_unicode = true; | |
2783 | sub_len = le16_to_cpu(reparse_buf->ReparseDataLength); | |
2784 | if (posix_buf->PathBuffer + sub_len > end_of_smb) { | |
2785 | cifs_dbg(FYI, "reparse buf beyond SMB\n"); | |
2786 | rc = -EIO; | |
2787 | goto qreparse_out; | |
2788 | } | |
2789 | *symlinkinfo = cifs_strndup_from_utf16(posix_buf->PathBuffer, | |
2790 | sub_len, is_unicode, nls_codepage); | |
2791 | goto qreparse_out; | |
2792 | } else if (reparse_buf->ReparseTag != | |
2793 | cpu_to_le32(IO_REPARSE_TAG_SYMLINK)) { | |
2794 | rc = -EOPNOTSUPP; | |
2795 | goto qreparse_out; | |
2796 | } | |
2797 | ||
2798 | /* Reparse tag is NTFS symlink */ | |
2799 | sub_start = le16_to_cpu(reparse_buf->SubstituteNameOffset) + | |
2800 | reparse_buf->PathBuffer; | |
2801 | sub_len = le16_to_cpu(reparse_buf->SubstituteNameLength); | |
2802 | if (sub_start + sub_len > end_of_smb) { | |
d244bf2d PS |
2803 | cifs_dbg(FYI, "reparse buf beyond SMB\n"); |
2804 | rc = -EIO; | |
2805 | goto qreparse_out; | |
2806 | } | |
d244bf2d PS |
2807 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) |
2808 | is_unicode = true; | |
2809 | else | |
2810 | is_unicode = false; | |
989c7e51 | 2811 | |
d244bf2d PS |
2812 | /* BB FIXME investigate remapping reserved chars here */ |
2813 | *symlinkinfo = cifs_strndup_from_utf16(sub_start, sub_len, is_unicode, | |
2814 | nls_codepage); | |
2815 | if (!*symlinkinfo) | |
2816 | rc = -ENOMEM; | |
1da177e4 | 2817 | qreparse_out: |
4a6d87f1 | 2818 | cifs_buf_release(pSMB); |
1da177e4 | 2819 | |
d244bf2d PS |
2820 | /* |
2821 | * Note: On -EAGAIN error only caller can retry on handle based calls | |
2822 | * since file handle passed in no longer valid. | |
2823 | */ | |
1da177e4 LT |
2824 | return rc; |
2825 | } | |
2826 | ||
c7f508a9 SF |
2827 | int |
2828 | CIFSSMB_set_compression(const unsigned int xid, struct cifs_tcon *tcon, | |
2829 | __u16 fid) | |
2830 | { | |
2831 | int rc = 0; | |
2832 | int bytes_returned; | |
2833 | struct smb_com_transaction_compr_ioctl_req *pSMB; | |
2834 | struct smb_com_transaction_ioctl_rsp *pSMBr; | |
2835 | ||
2836 | cifs_dbg(FYI, "Set compression for %u\n", fid); | |
2837 | rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB, | |
2838 | (void **) &pSMBr); | |
2839 | if (rc) | |
2840 | return rc; | |
2841 | ||
2842 | pSMB->compression_state = cpu_to_le16(COMPRESSION_FORMAT_DEFAULT); | |
2843 | ||
2844 | pSMB->TotalParameterCount = 0; | |
bc09d141 | 2845 | pSMB->TotalDataCount = cpu_to_le32(2); |
c7f508a9 SF |
2846 | pSMB->MaxParameterCount = 0; |
2847 | pSMB->MaxDataCount = 0; | |
2848 | pSMB->MaxSetupCount = 4; | |
2849 | pSMB->Reserved = 0; | |
2850 | pSMB->ParameterOffset = 0; | |
bc09d141 | 2851 | pSMB->DataCount = cpu_to_le32(2); |
c7f508a9 SF |
2852 | pSMB->DataOffset = |
2853 | cpu_to_le32(offsetof(struct smb_com_transaction_compr_ioctl_req, | |
2854 | compression_state) - 4); /* 84 */ | |
2855 | pSMB->SetupCount = 4; | |
bc09d141 | 2856 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_IOCTL); |
c7f508a9 | 2857 | pSMB->ParameterCount = 0; |
bc09d141 | 2858 | pSMB->FunctionCode = cpu_to_le32(FSCTL_SET_COMPRESSION); |
c7f508a9 SF |
2859 | pSMB->IsFsctl = 1; /* FSCTL */ |
2860 | pSMB->IsRootFlag = 0; | |
2861 | pSMB->Fid = fid; /* file handle always le */ | |
2862 | /* 3 byte pad, followed by 2 byte compress state */ | |
bc09d141 | 2863 | pSMB->ByteCount = cpu_to_le16(5); |
c7f508a9 SF |
2864 | inc_rfc1001_len(pSMB, 5); |
2865 | ||
2866 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2867 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
2868 | if (rc) | |
2869 | cifs_dbg(FYI, "Send error in SetCompression = %d\n", rc); | |
2870 | ||
2871 | cifs_buf_release(pSMB); | |
2872 | ||
2873 | /* | |
2874 | * Note: On -EAGAIN error only caller can retry on handle based calls | |
2875 | * since file handle passed in no longer valid. | |
2876 | */ | |
2877 | return rc; | |
2878 | } | |
2879 | ||
2880 | ||
1da177e4 LT |
2881 | #ifdef CONFIG_CIFS_POSIX |
2882 | ||
bd9684b0 CB |
2883 | #ifdef CONFIG_FS_POSIX_ACL |
2884 | /** | |
2885 | * cifs_init_posix_acl - convert ACL from cifs to POSIX ACL format | |
2886 | * @ace: POSIX ACL entry to store converted ACL into | |
2887 | * @cifs_ace: ACL in cifs format | |
2888 | * | |
2889 | * Convert an Access Control Entry from wire format to local POSIX xattr | |
2890 | * format. | |
2891 | * | |
2892 | * Note that the @cifs_uid member is used to store both {g,u}id_t. | |
2893 | */ | |
2894 | static void cifs_init_posix_acl(struct posix_acl_entry *ace, | |
2895 | struct cifs_posix_ace *cifs_ace) | |
2896 | { | |
2897 | /* u8 cifs fields do not need le conversion */ | |
2898 | ace->e_perm = cifs_ace->cifs_e_perm; | |
2899 | ace->e_tag = cifs_ace->cifs_e_tag; | |
2900 | ||
2901 | switch (ace->e_tag) { | |
2902 | case ACL_USER: | |
2903 | ace->e_uid = make_kuid(&init_user_ns, | |
2904 | le64_to_cpu(cifs_ace->cifs_uid)); | |
2905 | break; | |
2906 | case ACL_GROUP: | |
2907 | ace->e_gid = make_kgid(&init_user_ns, | |
2908 | le64_to_cpu(cifs_ace->cifs_uid)); | |
2909 | break; | |
2910 | } | |
2911 | return; | |
2912 | } | |
2913 | ||
2914 | /** | |
2915 | * cifs_to_posix_acl - copy cifs ACL format to POSIX ACL format | |
2916 | * @acl: ACLs returned in POSIX ACL format | |
2917 | * @src: ACLs in cifs format | |
2918 | * @acl_type: type of POSIX ACL requested | |
2919 | * @size_of_data_area: size of SMB we got | |
2920 | * | |
2921 | * This function converts ACLs from cifs format to POSIX ACL format. | |
2922 | * If @acl is NULL then the size of the buffer required to store POSIX ACLs in | |
2923 | * their uapi format is returned. | |
2924 | */ | |
2925 | static int cifs_to_posix_acl(struct posix_acl **acl, char *src, | |
2926 | const int acl_type, const int size_of_data_area) | |
2927 | { | |
2928 | int size = 0; | |
2929 | __u16 count; | |
2930 | struct cifs_posix_ace *pACE; | |
2931 | struct cifs_posix_acl *cifs_acl = (struct cifs_posix_acl *)src; | |
2932 | struct posix_acl *kacl = NULL; | |
2933 | struct posix_acl_entry *pa, *pe; | |
2934 | ||
2935 | if (le16_to_cpu(cifs_acl->version) != CIFS_ACL_VERSION) | |
2936 | return -EOPNOTSUPP; | |
2937 | ||
2938 | if (acl_type == ACL_TYPE_ACCESS) { | |
2939 | count = le16_to_cpu(cifs_acl->access_entry_count); | |
2940 | pACE = &cifs_acl->ace_array[0]; | |
2941 | size = sizeof(struct cifs_posix_acl); | |
2942 | size += sizeof(struct cifs_posix_ace) * count; | |
2943 | /* check if we would go beyond end of SMB */ | |
2944 | if (size_of_data_area < size) { | |
2945 | cifs_dbg(FYI, "bad CIFS POSIX ACL size %d vs. %d\n", | |
2946 | size_of_data_area, size); | |
2947 | return -EINVAL; | |
2948 | } | |
2949 | } else if (acl_type == ACL_TYPE_DEFAULT) { | |
2950 | count = le16_to_cpu(cifs_acl->access_entry_count); | |
2951 | size = sizeof(struct cifs_posix_acl); | |
2952 | size += sizeof(struct cifs_posix_ace) * count; | |
2953 | /* skip past access ACEs to get to default ACEs */ | |
2954 | pACE = &cifs_acl->ace_array[count]; | |
2955 | count = le16_to_cpu(cifs_acl->default_entry_count); | |
2956 | size += sizeof(struct cifs_posix_ace) * count; | |
2957 | /* check if we would go beyond end of SMB */ | |
2958 | if (size_of_data_area < size) | |
2959 | return -EINVAL; | |
2960 | } else { | |
2961 | /* illegal type */ | |
2962 | return -EINVAL; | |
2963 | } | |
2964 | ||
2965 | /* Allocate number of POSIX ACLs to store in VFS format. */ | |
2966 | kacl = posix_acl_alloc(count, GFP_NOFS); | |
2967 | if (!kacl) | |
2968 | return -ENOMEM; | |
2969 | ||
2970 | FOREACH_ACL_ENTRY(pa, kacl, pe) { | |
2971 | cifs_init_posix_acl(pa, pACE); | |
2972 | pACE++; | |
2973 | } | |
2974 | ||
2975 | *acl = kacl; | |
2976 | return 0; | |
2977 | } | |
2978 | ||
dc1af4c4 CB |
2979 | /** |
2980 | * cifs_init_ace - convert ACL entry from POSIX ACL to cifs format | |
2981 | * @cifs_ace: the cifs ACL entry to store into | |
2982 | * @local_ace: the POSIX ACL entry to convert | |
2983 | */ | |
2984 | static void cifs_init_ace(struct cifs_posix_ace *cifs_ace, | |
2985 | const struct posix_acl_entry *local_ace) | |
2986 | { | |
2987 | cifs_ace->cifs_e_perm = local_ace->e_perm; | |
2988 | cifs_ace->cifs_e_tag = local_ace->e_tag; | |
2989 | ||
2990 | switch (local_ace->e_tag) { | |
2991 | case ACL_USER: | |
2992 | cifs_ace->cifs_uid = | |
2993 | cpu_to_le64(from_kuid(&init_user_ns, local_ace->e_uid)); | |
2994 | break; | |
2995 | case ACL_GROUP: | |
2996 | cifs_ace->cifs_uid = | |
2997 | cpu_to_le64(from_kgid(&init_user_ns, local_ace->e_gid)); | |
2998 | break; | |
2999 | default: | |
3000 | cifs_ace->cifs_uid = cpu_to_le64(-1); | |
3001 | } | |
3002 | } | |
3003 | ||
3004 | /** | |
3005 | * posix_acl_to_cifs - convert ACLs from POSIX ACL to cifs format | |
3006 | * @parm_data: ACLs in cifs format to conver to | |
3007 | * @acl: ACLs in POSIX ACL format to convert from | |
3008 | * @acl_type: the type of POSIX ACLs stored in @acl | |
3009 | * | |
3010 | * Return: the number cifs ACL entries after conversion | |
3011 | */ | |
3012 | static __u16 posix_acl_to_cifs(char *parm_data, const struct posix_acl *acl, | |
3013 | const int acl_type) | |
3014 | { | |
3015 | __u16 rc = 0; | |
3016 | struct cifs_posix_acl *cifs_acl = (struct cifs_posix_acl *)parm_data; | |
3017 | const struct posix_acl_entry *pa, *pe; | |
3018 | int count; | |
3019 | int i = 0; | |
3020 | ||
3021 | if ((acl == NULL) || (cifs_acl == NULL)) | |
3022 | return 0; | |
3023 | ||
3024 | count = acl->a_count; | |
3025 | cifs_dbg(FYI, "setting acl with %d entries\n", count); | |
3026 | ||
3027 | /* | |
3028 | * Note that the uapi POSIX ACL version is verified by the VFS and is | |
3029 | * independent of the cifs ACL version. Changing the POSIX ACL version | |
3030 | * is a uapi change and if it's changed we will pass down the POSIX ACL | |
3031 | * version in struct posix_acl from the VFS. For now there's really | |
3032 | * only one that all filesystems know how to deal with. | |
3033 | */ | |
3034 | cifs_acl->version = cpu_to_le16(1); | |
3035 | if (acl_type == ACL_TYPE_ACCESS) { | |
3036 | cifs_acl->access_entry_count = cpu_to_le16(count); | |
3037 | cifs_acl->default_entry_count = cpu_to_le16(0xFFFF); | |
3038 | } else if (acl_type == ACL_TYPE_DEFAULT) { | |
3039 | cifs_acl->default_entry_count = cpu_to_le16(count); | |
3040 | cifs_acl->access_entry_count = cpu_to_le16(0xFFFF); | |
3041 | } else { | |
3042 | cifs_dbg(FYI, "unknown ACL type %d\n", acl_type); | |
3043 | return 0; | |
3044 | } | |
3045 | FOREACH_ACL_ENTRY(pa, acl, pe) { | |
3046 | cifs_init_ace(&cifs_acl->ace_array[i++], pa); | |
3047 | } | |
3048 | if (rc == 0) { | |
3049 | rc = (__u16)(count * sizeof(struct cifs_posix_ace)); | |
3050 | rc += sizeof(struct cifs_posix_acl); | |
3051 | /* BB add check to make sure ACL does not overflow SMB */ | |
3052 | } | |
3053 | return rc; | |
3054 | } | |
3055 | ||
bd9684b0 CB |
3056 | int cifs_do_get_acl(const unsigned int xid, struct cifs_tcon *tcon, |
3057 | const unsigned char *searchName, struct posix_acl **acl, | |
3058 | const int acl_type, const struct nls_table *nls_codepage, | |
3059 | int remap) | |
3060 | { | |
3061 | /* SMB_QUERY_POSIX_ACL */ | |
3062 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
3063 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
3064 | int rc = 0; | |
3065 | int bytes_returned; | |
3066 | int name_len; | |
3067 | __u16 params, byte_count; | |
3068 | ||
3069 | cifs_dbg(FYI, "In GetPosixACL (Unix) for path %s\n", searchName); | |
3070 | ||
3071 | queryAclRetry: | |
3072 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3073 | (void **) &pSMBr); | |
3074 | if (rc) | |
3075 | return rc; | |
3076 | ||
3077 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3078 | name_len = | |
3079 | cifsConvertToUTF16((__le16 *) pSMB->FileName, | |
3080 | searchName, PATH_MAX, nls_codepage, | |
3081 | remap); | |
3082 | name_len++; /* trailing null */ | |
3083 | name_len *= 2; | |
3084 | pSMB->FileName[name_len] = 0; | |
3085 | pSMB->FileName[name_len+1] = 0; | |
3086 | } else { | |
3087 | name_len = copy_path_name(pSMB->FileName, searchName); | |
3088 | } | |
3089 | ||
3090 | params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; | |
3091 | pSMB->TotalDataCount = 0; | |
3092 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
3093 | /* BB find exact max data count below from sess structure BB */ | |
3094 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
3095 | pSMB->MaxSetupCount = 0; | |
3096 | pSMB->Reserved = 0; | |
3097 | pSMB->Flags = 0; | |
3098 | pSMB->Timeout = 0; | |
3099 | pSMB->Reserved2 = 0; | |
3100 | pSMB->ParameterOffset = cpu_to_le16( | |
3101 | offsetof(struct smb_com_transaction2_qpi_req, | |
3102 | InformationLevel) - 4); | |
3103 | pSMB->DataCount = 0; | |
3104 | pSMB->DataOffset = 0; | |
3105 | pSMB->SetupCount = 1; | |
3106 | pSMB->Reserved3 = 0; | |
3107 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
3108 | byte_count = params + 1 /* pad */ ; | |
3109 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3110 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3111 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_POSIX_ACL); | |
3112 | pSMB->Reserved4 = 0; | |
3113 | inc_rfc1001_len(pSMB, byte_count); | |
3114 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
3115 | ||
3116 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3117 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3118 | cifs_stats_inc(&tcon->stats.cifs_stats.num_acl_get); | |
3119 | if (rc) { | |
3120 | cifs_dbg(FYI, "Send error in Query POSIX ACL = %d\n", rc); | |
3121 | } else { | |
3122 | /* decode response */ | |
3123 | ||
3124 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
3125 | /* BB also check enough total bytes returned */ | |
3126 | if (rc || get_bcc(&pSMBr->hdr) < 2) | |
3127 | rc = -EIO; /* bad smb */ | |
3128 | else { | |
3129 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3130 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
3131 | rc = cifs_to_posix_acl(acl, | |
3132 | (char *)&pSMBr->hdr.Protocol+data_offset, | |
3133 | acl_type, count); | |
3134 | } | |
3135 | } | |
3136 | cifs_buf_release(pSMB); | |
3137 | /* | |
3138 | * The else branch after SendReceive() doesn't return EAGAIN so if we | |
3139 | * allocated @acl in cifs_to_posix_acl() we are guaranteed to return | |
3140 | * here and don't leak POSIX ACLs. | |
3141 | */ | |
3142 | if (rc == -EAGAIN) | |
3143 | goto queryAclRetry; | |
3144 | return rc; | |
3145 | } | |
dc1af4c4 CB |
3146 | |
3147 | int cifs_do_set_acl(const unsigned int xid, struct cifs_tcon *tcon, | |
3148 | const unsigned char *fileName, const struct posix_acl *acl, | |
3149 | const int acl_type, const struct nls_table *nls_codepage, | |
3150 | int remap) | |
3151 | { | |
3152 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
3153 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
3154 | char *parm_data; | |
3155 | int name_len; | |
3156 | int rc = 0; | |
3157 | int bytes_returned = 0; | |
3158 | __u16 params, byte_count, data_count, param_offset, offset; | |
3159 | ||
3160 | cifs_dbg(FYI, "In SetPosixACL (Unix) for path %s\n", fileName); | |
3161 | setAclRetry: | |
3162 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3163 | (void **) &pSMBr); | |
3164 | if (rc) | |
3165 | return rc; | |
3166 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3167 | name_len = | |
3168 | cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName, | |
3169 | PATH_MAX, nls_codepage, remap); | |
3170 | name_len++; /* trailing null */ | |
3171 | name_len *= 2; | |
3172 | } else { | |
3173 | name_len = copy_path_name(pSMB->FileName, fileName); | |
3174 | } | |
3175 | params = 6 + name_len; | |
3176 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
3177 | /* BB find max SMB size from sess */ | |
3178 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
3179 | pSMB->MaxSetupCount = 0; | |
3180 | pSMB->Reserved = 0; | |
3181 | pSMB->Flags = 0; | |
3182 | pSMB->Timeout = 0; | |
3183 | pSMB->Reserved2 = 0; | |
3184 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
3185 | InformationLevel) - 4; | |
3186 | offset = param_offset + params; | |
3187 | parm_data = ((char *) &pSMB->hdr.Protocol) + offset; | |
3188 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
3189 | ||
3190 | /* convert to on the wire format for POSIX ACL */ | |
3191 | data_count = posix_acl_to_cifs(parm_data, acl, acl_type); | |
3192 | ||
3193 | if (data_count == 0) { | |
3194 | rc = -EOPNOTSUPP; | |
3195 | goto setACLerrorExit; | |
3196 | } | |
3197 | pSMB->DataOffset = cpu_to_le16(offset); | |
3198 | pSMB->SetupCount = 1; | |
3199 | pSMB->Reserved3 = 0; | |
3200 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
3201 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_POSIX_ACL); | |
3202 | byte_count = 3 /* pad */ + params + data_count; | |
3203 | pSMB->DataCount = cpu_to_le16(data_count); | |
3204 | pSMB->TotalDataCount = pSMB->DataCount; | |
3205 | pSMB->ParameterCount = cpu_to_le16(params); | |
3206 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
3207 | pSMB->Reserved4 = 0; | |
3208 | inc_rfc1001_len(pSMB, byte_count); | |
3209 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
3210 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3211 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3212 | if (rc) | |
3213 | cifs_dbg(FYI, "Set POSIX ACL returned %d\n", rc); | |
3214 | ||
3215 | setACLerrorExit: | |
3216 | cifs_buf_release(pSMB); | |
3217 | if (rc == -EAGAIN) | |
3218 | goto setAclRetry; | |
3219 | return rc; | |
3220 | } | |
bd9684b0 CB |
3221 | #else |
3222 | int cifs_do_get_acl(const unsigned int xid, struct cifs_tcon *tcon, | |
3223 | const unsigned char *searchName, struct posix_acl **acl, | |
3224 | const int acl_type, const struct nls_table *nls_codepage, | |
3225 | int remap) | |
3226 | { | |
3227 | return -EOPNOTSUPP; | |
3228 | } | |
dc1af4c4 CB |
3229 | |
3230 | int cifs_do_set_acl(const unsigned int xid, struct cifs_tcon *tcon, | |
3231 | const unsigned char *fileName, const struct posix_acl *acl, | |
3232 | const int acl_type, const struct nls_table *nls_codepage, | |
3233 | int remap) | |
3234 | { | |
3235 | return -EOPNOTSUPP; | |
3236 | } | |
bd9684b0 CB |
3237 | #endif /* CONFIG_FS_POSIX_ACL */ |
3238 | ||
f654bac2 | 3239 | int |
6d5786a3 | 3240 | CIFSGetExtAttr(const unsigned int xid, struct cifs_tcon *tcon, |
ad7a2926 | 3241 | const int netfid, __u64 *pExtAttrBits, __u64 *pMask) |
f654bac2 | 3242 | { |
50c2f753 SF |
3243 | int rc = 0; |
3244 | struct smb_t2_qfi_req *pSMB = NULL; | |
3245 | struct smb_t2_qfi_rsp *pSMBr = NULL; | |
3246 | int bytes_returned; | |
3247 | __u16 params, byte_count; | |
f654bac2 | 3248 | |
f96637be | 3249 | cifs_dbg(FYI, "In GetExtAttr\n"); |
790fe579 SF |
3250 | if (tcon == NULL) |
3251 | return -ENODEV; | |
f654bac2 SF |
3252 | |
3253 | GetExtAttrRetry: | |
790fe579 | 3254 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, |
fb157ed2 | 3255 | (void **) &pSMBr); |
790fe579 SF |
3256 | if (rc) |
3257 | return rc; | |
f654bac2 | 3258 | |
ad7a2926 | 3259 | params = 2 /* level */ + 2 /* fid */; |
790fe579 SF |
3260 | pSMB->t2.TotalDataCount = 0; |
3261 | pSMB->t2.MaxParameterCount = cpu_to_le16(4); | |
3262 | /* BB find exact max data count below from sess structure BB */ | |
3263 | pSMB->t2.MaxDataCount = cpu_to_le16(4000); | |
3264 | pSMB->t2.MaxSetupCount = 0; | |
3265 | pSMB->t2.Reserved = 0; | |
3266 | pSMB->t2.Flags = 0; | |
3267 | pSMB->t2.Timeout = 0; | |
3268 | pSMB->t2.Reserved2 = 0; | |
3269 | pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req, | |
3270 | Fid) - 4); | |
3271 | pSMB->t2.DataCount = 0; | |
3272 | pSMB->t2.DataOffset = 0; | |
3273 | pSMB->t2.SetupCount = 1; | |
3274 | pSMB->t2.Reserved3 = 0; | |
3275 | pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); | |
3276 | byte_count = params + 1 /* pad */ ; | |
3277 | pSMB->t2.TotalParameterCount = cpu_to_le16(params); | |
3278 | pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount; | |
3279 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_ATTR_FLAGS); | |
3280 | pSMB->Pad = 0; | |
f654bac2 | 3281 | pSMB->Fid = netfid; |
be8e3b00 | 3282 | inc_rfc1001_len(pSMB, byte_count); |
790fe579 SF |
3283 | pSMB->t2.ByteCount = cpu_to_le16(byte_count); |
3284 | ||
3285 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3286 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3287 | if (rc) { | |
f96637be | 3288 | cifs_dbg(FYI, "error %d in GetExtAttr\n", rc); |
790fe579 SF |
3289 | } else { |
3290 | /* decode response */ | |
3291 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
790fe579 | 3292 | /* BB also check enough total bytes returned */ |
820a803f | 3293 | if (rc || get_bcc(&pSMBr->hdr) < 2) |
790fe579 SF |
3294 | /* If rc should we check for EOPNOSUPP and |
3295 | disable the srvino flag? or in caller? */ | |
3296 | rc = -EIO; /* bad smb */ | |
3297 | else { | |
3298 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3299 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
3300 | struct file_chattr_info *pfinfo; | |
fb157ed2 | 3301 | |
790fe579 | 3302 | if (count != 16) { |
a0a3036b | 3303 | cifs_dbg(FYI, "Invalid size ret in GetExtAttr\n"); |
790fe579 SF |
3304 | rc = -EIO; |
3305 | goto GetExtAttrOut; | |
3306 | } | |
3307 | pfinfo = (struct file_chattr_info *) | |
3308 | (data_offset + (char *) &pSMBr->hdr.Protocol); | |
3309 | *pExtAttrBits = le64_to_cpu(pfinfo->mode); | |
f654bac2 | 3310 | *pMask = le64_to_cpu(pfinfo->mask); |
790fe579 SF |
3311 | } |
3312 | } | |
f654bac2 | 3313 | GetExtAttrOut: |
790fe579 SF |
3314 | cifs_buf_release(pSMB); |
3315 | if (rc == -EAGAIN) | |
3316 | goto GetExtAttrRetry; | |
3317 | return rc; | |
f654bac2 SF |
3318 | } |
3319 | ||
f654bac2 | 3320 | #endif /* CONFIG_POSIX */ |
1da177e4 | 3321 | |
79df1bae JL |
3322 | /* |
3323 | * Initialize NT TRANSACT SMB into small smb request buffer. This assumes that | |
3324 | * all NT TRANSACTS that we init here have total parm and data under about 400 | |
3325 | * bytes (to fit in small cifs buffer size), which is the case so far, it | |
3326 | * easily fits. NB: Setup words themselves and ByteCount MaxSetupCount (size of | |
3327 | * returned setup area) and MaxParameterCount (returned parms size) must be set | |
3328 | * by caller | |
3329 | */ | |
3330 | static int | |
3331 | smb_init_nttransact(const __u16 sub_command, const int setup_count, | |
96daf2b0 | 3332 | const int parm_len, struct cifs_tcon *tcon, |
79df1bae JL |
3333 | void **ret_buf) |
3334 | { | |
3335 | int rc; | |
3336 | __u32 temp_offset; | |
3337 | struct smb_com_ntransact_req *pSMB; | |
3338 | ||
3339 | rc = small_smb_init(SMB_COM_NT_TRANSACT, 19 + setup_count, tcon, | |
3340 | (void **)&pSMB); | |
3341 | if (rc) | |
3342 | return rc; | |
3343 | *ret_buf = (void *)pSMB; | |
3344 | pSMB->Reserved = 0; | |
3345 | pSMB->TotalParameterCount = cpu_to_le32(parm_len); | |
3346 | pSMB->TotalDataCount = 0; | |
c974befa | 3347 | pSMB->MaxDataCount = cpu_to_le32(CIFSMaxBufSize & 0xFFFFFF00); |
79df1bae JL |
3348 | pSMB->ParameterCount = pSMB->TotalParameterCount; |
3349 | pSMB->DataCount = pSMB->TotalDataCount; | |
3350 | temp_offset = offsetof(struct smb_com_ntransact_req, Parms) + | |
3351 | (setup_count * 2) - 4 /* for rfc1001 length itself */; | |
3352 | pSMB->ParameterOffset = cpu_to_le32(temp_offset); | |
3353 | pSMB->DataOffset = cpu_to_le32(temp_offset + parm_len); | |
3354 | pSMB->SetupCount = setup_count; /* no need to le convert byte fields */ | |
3355 | pSMB->SubCommand = cpu_to_le16(sub_command); | |
3356 | return 0; | |
3357 | } | |
3358 | ||
3359 | static int | |
3360 | validate_ntransact(char *buf, char **ppparm, char **ppdata, | |
3361 | __u32 *pparmlen, __u32 *pdatalen) | |
3362 | { | |
3363 | char *end_of_smb; | |
3364 | __u32 data_count, data_offset, parm_count, parm_offset; | |
3365 | struct smb_com_ntransact_rsp *pSMBr; | |
820a803f | 3366 | u16 bcc; |
79df1bae JL |
3367 | |
3368 | *pdatalen = 0; | |
3369 | *pparmlen = 0; | |
3370 | ||
3371 | if (buf == NULL) | |
3372 | return -EINVAL; | |
3373 | ||
3374 | pSMBr = (struct smb_com_ntransact_rsp *)buf; | |
3375 | ||
820a803f JL |
3376 | bcc = get_bcc(&pSMBr->hdr); |
3377 | end_of_smb = 2 /* sizeof byte count */ + bcc + | |
79df1bae JL |
3378 | (char *)&pSMBr->ByteCount; |
3379 | ||
3380 | data_offset = le32_to_cpu(pSMBr->DataOffset); | |
3381 | data_count = le32_to_cpu(pSMBr->DataCount); | |
3382 | parm_offset = le32_to_cpu(pSMBr->ParameterOffset); | |
3383 | parm_count = le32_to_cpu(pSMBr->ParameterCount); | |
3384 | ||
3385 | *ppparm = (char *)&pSMBr->hdr.Protocol + parm_offset; | |
3386 | *ppdata = (char *)&pSMBr->hdr.Protocol + data_offset; | |
3387 | ||
3388 | /* should we also check that parm and data areas do not overlap? */ | |
3389 | if (*ppparm > end_of_smb) { | |
f96637be | 3390 | cifs_dbg(FYI, "parms start after end of smb\n"); |
79df1bae JL |
3391 | return -EINVAL; |
3392 | } else if (parm_count + *ppparm > end_of_smb) { | |
f96637be | 3393 | cifs_dbg(FYI, "parm end after end of smb\n"); |
79df1bae JL |
3394 | return -EINVAL; |
3395 | } else if (*ppdata > end_of_smb) { | |
f96637be | 3396 | cifs_dbg(FYI, "data starts after end of smb\n"); |
79df1bae JL |
3397 | return -EINVAL; |
3398 | } else if (data_count + *ppdata > end_of_smb) { | |
f96637be JP |
3399 | cifs_dbg(FYI, "data %p + count %d (%p) past smb end %p start %p\n", |
3400 | *ppdata, data_count, (data_count + *ppdata), | |
3401 | end_of_smb, pSMBr); | |
79df1bae | 3402 | return -EINVAL; |
820a803f | 3403 | } else if (parm_count + data_count > bcc) { |
f96637be | 3404 | cifs_dbg(FYI, "parm count and data count larger than SMB\n"); |
79df1bae JL |
3405 | return -EINVAL; |
3406 | } | |
3407 | *pdatalen = data_count; | |
3408 | *pparmlen = parm_count; | |
3409 | return 0; | |
3410 | } | |
3411 | ||
0a4b92c0 SF |
3412 | /* Get Security Descriptor (by handle) from remote server for a file or dir */ |
3413 | int | |
6d5786a3 | 3414 | CIFSSMBGetCIFSACL(const unsigned int xid, struct cifs_tcon *tcon, __u16 fid, |
630f3f0c | 3415 | struct cifs_ntsd **acl_inf, __u32 *pbuflen) |
0a4b92c0 SF |
3416 | { |
3417 | int rc = 0; | |
3418 | int buf_type = 0; | |
ad7a2926 | 3419 | QUERY_SEC_DESC_REQ *pSMB; |
0a4b92c0 | 3420 | struct kvec iov[1]; |
da502f7d | 3421 | struct kvec rsp_iov; |
0a4b92c0 | 3422 | |
f96637be | 3423 | cifs_dbg(FYI, "GetCifsACL\n"); |
0a4b92c0 | 3424 | |
630f3f0c SF |
3425 | *pbuflen = 0; |
3426 | *acl_inf = NULL; | |
3427 | ||
b9c7a2bb | 3428 | rc = smb_init_nttransact(NT_TRANSACT_QUERY_SECURITY_DESC, 0, |
0a4b92c0 SF |
3429 | 8 /* parm len */, tcon, (void **) &pSMB); |
3430 | if (rc) | |
3431 | return rc; | |
3432 | ||
3433 | pSMB->MaxParameterCount = cpu_to_le32(4); | |
3434 | /* BB TEST with big acls that might need to be e.g. larger than 16K */ | |
3435 | pSMB->MaxSetupCount = 0; | |
3436 | pSMB->Fid = fid; /* file handle always le */ | |
3437 | pSMB->AclFlags = cpu_to_le32(CIFS_ACL_OWNER | CIFS_ACL_GROUP | | |
3438 | CIFS_ACL_DACL); | |
3439 | pSMB->ByteCount = cpu_to_le16(11); /* 3 bytes pad + 8 bytes parm */ | |
be8e3b00 | 3440 | inc_rfc1001_len(pSMB, 11); |
0a4b92c0 | 3441 | iov[0].iov_base = (char *)pSMB; |
be8e3b00 | 3442 | iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4; |
0a4b92c0 | 3443 | |
a761ac57 | 3444 | rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovec */, &buf_type, |
da502f7d PS |
3445 | 0, &rsp_iov); |
3446 | cifs_small_buf_release(pSMB); | |
44c58186 | 3447 | cifs_stats_inc(&tcon->stats.cifs_stats.num_acl_get); |
0a4b92c0 | 3448 | if (rc) { |
f96637be | 3449 | cifs_dbg(FYI, "Send error in QuerySecDesc = %d\n", rc); |
0a4b92c0 | 3450 | } else { /* decode response */ |
ad7a2926 | 3451 | __le32 *parm; |
630f3f0c SF |
3452 | __u32 parm_len; |
3453 | __u32 acl_len; | |
50c2f753 | 3454 | struct smb_com_ntransact_rsp *pSMBr; |
630f3f0c | 3455 | char *pdata; |
0a4b92c0 SF |
3456 | |
3457 | /* validate_nttransact */ | |
da502f7d | 3458 | rc = validate_ntransact(rsp_iov.iov_base, (char **)&parm, |
630f3f0c | 3459 | &pdata, &parm_len, pbuflen); |
790fe579 | 3460 | if (rc) |
0a4b92c0 | 3461 | goto qsec_out; |
da502f7d | 3462 | pSMBr = (struct smb_com_ntransact_rsp *)rsp_iov.iov_base; |
0a4b92c0 | 3463 | |
f96637be JP |
3464 | cifs_dbg(FYI, "smb %p parm %p data %p\n", |
3465 | pSMBr, parm, *acl_inf); | |
0a4b92c0 SF |
3466 | |
3467 | if (le32_to_cpu(pSMBr->ParameterCount) != 4) { | |
3468 | rc = -EIO; /* bad smb */ | |
630f3f0c | 3469 | *pbuflen = 0; |
0a4b92c0 SF |
3470 | goto qsec_out; |
3471 | } | |
3472 | ||
3473 | /* BB check that data area is minimum length and as big as acl_len */ | |
3474 | ||
af6f4612 | 3475 | acl_len = le32_to_cpu(*parm); |
630f3f0c | 3476 | if (acl_len != *pbuflen) { |
f96637be JP |
3477 | cifs_dbg(VFS, "acl length %d does not match %d\n", |
3478 | acl_len, *pbuflen); | |
630f3f0c SF |
3479 | if (*pbuflen > acl_len) |
3480 | *pbuflen = acl_len; | |
3481 | } | |
0a4b92c0 | 3482 | |
630f3f0c SF |
3483 | /* check if buffer is big enough for the acl |
3484 | header followed by the smallest SID */ | |
3485 | if ((*pbuflen < sizeof(struct cifs_ntsd) + 8) || | |
3486 | (*pbuflen >= 64 * 1024)) { | |
f96637be | 3487 | cifs_dbg(VFS, "bad acl length %d\n", *pbuflen); |
630f3f0c SF |
3488 | rc = -EINVAL; |
3489 | *pbuflen = 0; | |
3490 | } else { | |
f7f7c185 | 3491 | *acl_inf = kmemdup(pdata, *pbuflen, GFP_KERNEL); |
630f3f0c SF |
3492 | if (*acl_inf == NULL) { |
3493 | *pbuflen = 0; | |
3494 | rc = -ENOMEM; | |
3495 | } | |
630f3f0c | 3496 | } |
0a4b92c0 SF |
3497 | } |
3498 | qsec_out: | |
da502f7d | 3499 | free_rsp_buf(buf_type, rsp_iov.iov_base); |
0a4b92c0 SF |
3500 | return rc; |
3501 | } | |
97837582 SF |
3502 | |
3503 | int | |
6d5786a3 | 3504 | CIFSSMBSetCIFSACL(const unsigned int xid, struct cifs_tcon *tcon, __u16 fid, |
a5ff3769 | 3505 | struct cifs_ntsd *pntsd, __u32 acllen, int aclflag) |
97837582 SF |
3506 | { |
3507 | __u16 byte_count, param_count, data_count, param_offset, data_offset; | |
3508 | int rc = 0; | |
3509 | int bytes_returned = 0; | |
3510 | SET_SEC_DESC_REQ *pSMB = NULL; | |
b2a3ad9c | 3511 | void *pSMBr; |
97837582 SF |
3512 | |
3513 | setCifsAclRetry: | |
b2a3ad9c | 3514 | rc = smb_init(SMB_COM_NT_TRANSACT, 19, tcon, (void **) &pSMB, &pSMBr); |
97837582 | 3515 | if (rc) |
b2a3ad9c | 3516 | return rc; |
97837582 SF |
3517 | |
3518 | pSMB->MaxSetupCount = 0; | |
3519 | pSMB->Reserved = 0; | |
3520 | ||
3521 | param_count = 8; | |
3522 | param_offset = offsetof(struct smb_com_transaction_ssec_req, Fid) - 4; | |
3523 | data_count = acllen; | |
3524 | data_offset = param_offset + param_count; | |
3525 | byte_count = 3 /* pad */ + param_count; | |
3526 | ||
3527 | pSMB->DataCount = cpu_to_le32(data_count); | |
3528 | pSMB->TotalDataCount = pSMB->DataCount; | |
3529 | pSMB->MaxParameterCount = cpu_to_le32(4); | |
3530 | pSMB->MaxDataCount = cpu_to_le32(16384); | |
3531 | pSMB->ParameterCount = cpu_to_le32(param_count); | |
3532 | pSMB->ParameterOffset = cpu_to_le32(param_offset); | |
3533 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
3534 | pSMB->DataOffset = cpu_to_le32(data_offset); | |
3535 | pSMB->SetupCount = 0; | |
3536 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_SET_SECURITY_DESC); | |
3537 | pSMB->ByteCount = cpu_to_le16(byte_count+data_count); | |
3538 | ||
3539 | pSMB->Fid = fid; /* file handle always le */ | |
3540 | pSMB->Reserved2 = 0; | |
a5ff3769 | 3541 | pSMB->AclFlags = cpu_to_le32(aclflag); |
97837582 SF |
3542 | |
3543 | if (pntsd && acllen) { | |
b2a3ad9c JL |
3544 | memcpy((char *)pSMBr + offsetof(struct smb_hdr, Protocol) + |
3545 | data_offset, pntsd, acllen); | |
be8e3b00 | 3546 | inc_rfc1001_len(pSMB, byte_count + data_count); |
97837582 | 3547 | } else |
be8e3b00 | 3548 | inc_rfc1001_len(pSMB, byte_count); |
97837582 SF |
3549 | |
3550 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3551 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3552 | ||
f96637be JP |
3553 | cifs_dbg(FYI, "SetCIFSACL bytes_returned: %d, rc: %d\n", |
3554 | bytes_returned, rc); | |
97837582 | 3555 | if (rc) |
f96637be | 3556 | cifs_dbg(FYI, "Set CIFS ACL returned %d\n", rc); |
97837582 SF |
3557 | cifs_buf_release(pSMB); |
3558 | ||
3559 | if (rc == -EAGAIN) | |
3560 | goto setCifsAclRetry; | |
3561 | ||
3562 | return (rc); | |
3563 | } | |
3564 | ||
0a4b92c0 | 3565 | |
6b8edfe0 SF |
3566 | /* Legacy Query Path Information call for lookup to old servers such |
3567 | as Win9x/WinME */ | |
68889f26 PS |
3568 | int |
3569 | SMBQueryInformation(const unsigned int xid, struct cifs_tcon *tcon, | |
3570 | const char *search_name, FILE_ALL_INFO *data, | |
3571 | const struct nls_table *nls_codepage, int remap) | |
6b8edfe0 | 3572 | { |
ad7a2926 SF |
3573 | QUERY_INFORMATION_REQ *pSMB; |
3574 | QUERY_INFORMATION_RSP *pSMBr; | |
6b8edfe0 SF |
3575 | int rc = 0; |
3576 | int bytes_returned; | |
3577 | int name_len; | |
3578 | ||
f96637be | 3579 | cifs_dbg(FYI, "In SMBQPath path %s\n", search_name); |
6b8edfe0 SF |
3580 | QInfRetry: |
3581 | rc = smb_init(SMB_COM_QUERY_INFORMATION, 0, tcon, (void **) &pSMB, | |
50c2f753 | 3582 | (void **) &pSMBr); |
6b8edfe0 SF |
3583 | if (rc) |
3584 | return rc; | |
3585 | ||
3586 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3587 | name_len = | |
acbbb76a | 3588 | cifsConvertToUTF16((__le16 *) pSMB->FileName, |
68889f26 | 3589 | search_name, PATH_MAX, nls_codepage, |
acbbb76a | 3590 | remap); |
6b8edfe0 SF |
3591 | name_len++; /* trailing null */ |
3592 | name_len *= 2; | |
50c2f753 | 3593 | } else { |
340625e6 | 3594 | name_len = copy_path_name(pSMB->FileName, search_name); |
6b8edfe0 SF |
3595 | } |
3596 | pSMB->BufferFormat = 0x04; | |
50c2f753 | 3597 | name_len++; /* account for buffer type byte */ |
be8e3b00 | 3598 | inc_rfc1001_len(pSMB, (__u16)name_len); |
6b8edfe0 SF |
3599 | pSMB->ByteCount = cpu_to_le16(name_len); |
3600 | ||
3601 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
50c2f753 | 3602 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); |
6b8edfe0 | 3603 | if (rc) { |
f96637be | 3604 | cifs_dbg(FYI, "Send error in QueryInfo = %d\n", rc); |
68889f26 | 3605 | } else if (data) { |
95390201 | 3606 | struct timespec64 ts; |
1bd5bbcb | 3607 | __u32 time = le32_to_cpu(pSMBr->last_write_time); |
ad7a2926 SF |
3608 | |
3609 | /* decode response */ | |
1bd5bbcb | 3610 | /* BB FIXME - add time zone adjustment BB */ |
68889f26 | 3611 | memset(data, 0, sizeof(FILE_ALL_INFO)); |
1bd5bbcb SF |
3612 | ts.tv_nsec = 0; |
3613 | ts.tv_sec = time; | |
3614 | /* decode time fields */ | |
68889f26 PS |
3615 | data->ChangeTime = cpu_to_le64(cifs_UnixTimeToNT(ts)); |
3616 | data->LastWriteTime = data->ChangeTime; | |
3617 | data->LastAccessTime = 0; | |
3618 | data->AllocationSize = | |
70ca734a | 3619 | cpu_to_le64(le32_to_cpu(pSMBr->size)); |
68889f26 PS |
3620 | data->EndOfFile = data->AllocationSize; |
3621 | data->Attributes = | |
70ca734a | 3622 | cpu_to_le32(le16_to_cpu(pSMBr->attr)); |
6b8edfe0 SF |
3623 | } else |
3624 | rc = -EIO; /* bad buffer passed in */ | |
3625 | ||
3626 | cifs_buf_release(pSMB); | |
3627 | ||
3628 | if (rc == -EAGAIN) | |
3629 | goto QInfRetry; | |
3630 | ||
3631 | return rc; | |
3632 | } | |
3633 | ||
bcd5357f | 3634 | int |
6d5786a3 | 3635 | CIFSSMBQFileInfo(const unsigned int xid, struct cifs_tcon *tcon, |
bcd5357f JL |
3636 | u16 netfid, FILE_ALL_INFO *pFindData) |
3637 | { | |
3638 | struct smb_t2_qfi_req *pSMB = NULL; | |
3639 | struct smb_t2_qfi_rsp *pSMBr = NULL; | |
3640 | int rc = 0; | |
3641 | int bytes_returned; | |
3642 | __u16 params, byte_count; | |
3643 | ||
3644 | QFileInfoRetry: | |
3645 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3646 | (void **) &pSMBr); | |
3647 | if (rc) | |
3648 | return rc; | |
3649 | ||
3650 | params = 2 /* level */ + 2 /* fid */; | |
3651 | pSMB->t2.TotalDataCount = 0; | |
3652 | pSMB->t2.MaxParameterCount = cpu_to_le16(4); | |
3653 | /* BB find exact max data count below from sess structure BB */ | |
3654 | pSMB->t2.MaxDataCount = cpu_to_le16(CIFSMaxBufSize); | |
3655 | pSMB->t2.MaxSetupCount = 0; | |
3656 | pSMB->t2.Reserved = 0; | |
3657 | pSMB->t2.Flags = 0; | |
3658 | pSMB->t2.Timeout = 0; | |
3659 | pSMB->t2.Reserved2 = 0; | |
3660 | pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req, | |
3661 | Fid) - 4); | |
3662 | pSMB->t2.DataCount = 0; | |
3663 | pSMB->t2.DataOffset = 0; | |
3664 | pSMB->t2.SetupCount = 1; | |
3665 | pSMB->t2.Reserved3 = 0; | |
3666 | pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); | |
3667 | byte_count = params + 1 /* pad */ ; | |
3668 | pSMB->t2.TotalParameterCount = cpu_to_le16(params); | |
3669 | pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount; | |
3670 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_ALL_INFO); | |
3671 | pSMB->Pad = 0; | |
3672 | pSMB->Fid = netfid; | |
be8e3b00 | 3673 | inc_rfc1001_len(pSMB, byte_count); |
7ac0febb | 3674 | pSMB->t2.ByteCount = cpu_to_le16(byte_count); |
6b8edfe0 | 3675 | |
bcd5357f JL |
3676 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
3677 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3678 | if (rc) { | |
a0a3036b | 3679 | cifs_dbg(FYI, "Send error in QFileInfo = %d\n", rc); |
bcd5357f JL |
3680 | } else { /* decode response */ |
3681 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
6b8edfe0 | 3682 | |
bcd5357f JL |
3683 | if (rc) /* BB add auto retry on EOPNOTSUPP? */ |
3684 | rc = -EIO; | |
820a803f | 3685 | else if (get_bcc(&pSMBr->hdr) < 40) |
bcd5357f JL |
3686 | rc = -EIO; /* bad smb */ |
3687 | else if (pFindData) { | |
3688 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3689 | memcpy((char *) pFindData, | |
3690 | (char *) &pSMBr->hdr.Protocol + | |
3691 | data_offset, sizeof(FILE_ALL_INFO)); | |
3692 | } else | |
3693 | rc = -ENOMEM; | |
3694 | } | |
3695 | cifs_buf_release(pSMB); | |
3696 | if (rc == -EAGAIN) | |
3697 | goto QFileInfoRetry; | |
6b8edfe0 | 3698 | |
bcd5357f JL |
3699 | return rc; |
3700 | } | |
6b8edfe0 | 3701 | |
1da177e4 | 3702 | int |
6d5786a3 | 3703 | CIFSSMBQPathInfo(const unsigned int xid, struct cifs_tcon *tcon, |
68889f26 | 3704 | const char *search_name, FILE_ALL_INFO *data, |
acf1a1b1 | 3705 | int legacy /* old style infolevel */, |
737b758c | 3706 | const struct nls_table *nls_codepage, int remap) |
1da177e4 | 3707 | { |
68889f26 | 3708 | /* level 263 SMB_QUERY_FILE_ALL_INFO */ |
1da177e4 LT |
3709 | TRANSACTION2_QPI_REQ *pSMB = NULL; |
3710 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
3711 | int rc = 0; | |
3712 | int bytes_returned; | |
3713 | int name_len; | |
3714 | __u16 params, byte_count; | |
3715 | ||
f96637be | 3716 | /* cifs_dbg(FYI, "In QPathInfo path %s\n", search_name); */ |
1da177e4 LT |
3717 | QPathInfoRetry: |
3718 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3719 | (void **) &pSMBr); | |
3720 | if (rc) | |
3721 | return rc; | |
3722 | ||
3723 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3724 | name_len = | |
68889f26 | 3725 | cifsConvertToUTF16((__le16 *) pSMB->FileName, search_name, |
acbbb76a | 3726 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
3727 | name_len++; /* trailing null */ |
3728 | name_len *= 2; | |
340625e6 RS |
3729 | } else { |
3730 | name_len = copy_path_name(pSMB->FileName, search_name); | |
1da177e4 LT |
3731 | } |
3732 | ||
50c2f753 | 3733 | params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */; |
1da177e4 LT |
3734 | pSMB->TotalDataCount = 0; |
3735 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
3736 | /* BB find exact max SMB PDU from sess structure BB */ |
3737 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
1da177e4 LT |
3738 | pSMB->MaxSetupCount = 0; |
3739 | pSMB->Reserved = 0; | |
3740 | pSMB->Flags = 0; | |
3741 | pSMB->Timeout = 0; | |
3742 | pSMB->Reserved2 = 0; | |
3743 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 3744 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
3745 | pSMB->DataCount = 0; |
3746 | pSMB->DataOffset = 0; | |
3747 | pSMB->SetupCount = 1; | |
3748 | pSMB->Reserved3 = 0; | |
3749 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
3750 | byte_count = params + 1 /* pad */ ; | |
3751 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3752 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
790fe579 | 3753 | if (legacy) |
acf1a1b1 SF |
3754 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_STANDARD); |
3755 | else | |
3756 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_ALL_INFO); | |
1da177e4 | 3757 | pSMB->Reserved4 = 0; |
be8e3b00 | 3758 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
3759 | pSMB->ByteCount = cpu_to_le16(byte_count); |
3760 | ||
3761 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3762 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3763 | if (rc) { | |
f96637be | 3764 | cifs_dbg(FYI, "Send error in QPathInfo = %d\n", rc); |
1da177e4 LT |
3765 | } else { /* decode response */ |
3766 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
3767 | ||
acf1a1b1 SF |
3768 | if (rc) /* BB add auto retry on EOPNOTSUPP? */ |
3769 | rc = -EIO; | |
820a803f | 3770 | else if (!legacy && get_bcc(&pSMBr->hdr) < 40) |
1da177e4 | 3771 | rc = -EIO; /* bad smb */ |
820a803f | 3772 | else if (legacy && get_bcc(&pSMBr->hdr) < 24) |
50c2f753 SF |
3773 | rc = -EIO; /* 24 or 26 expected but we do not read |
3774 | last field */ | |
68889f26 | 3775 | else if (data) { |
acf1a1b1 | 3776 | int size; |
1da177e4 | 3777 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
ad7a2926 | 3778 | |
68889f26 PS |
3779 | /* |
3780 | * On legacy responses we do not read the last field, | |
3781 | * EAsize, fortunately since it varies by subdialect and | |
3782 | * also note it differs on Set vs Get, ie two bytes or 4 | |
3783 | * bytes depending but we don't care here. | |
3784 | */ | |
ad7a2926 | 3785 | if (legacy) |
acf1a1b1 SF |
3786 | size = sizeof(FILE_INFO_STANDARD); |
3787 | else | |
3788 | size = sizeof(FILE_ALL_INFO); | |
68889f26 | 3789 | memcpy((char *) data, (char *) &pSMBr->hdr.Protocol + |
acf1a1b1 | 3790 | data_offset, size); |
1da177e4 LT |
3791 | } else |
3792 | rc = -ENOMEM; | |
3793 | } | |
3794 | cifs_buf_release(pSMB); | |
3795 | if (rc == -EAGAIN) | |
3796 | goto QPathInfoRetry; | |
3797 | ||
3798 | return rc; | |
3799 | } | |
3800 | ||
c8634fd3 | 3801 | int |
6d5786a3 | 3802 | CIFSSMBUnixQFileInfo(const unsigned int xid, struct cifs_tcon *tcon, |
c8634fd3 JL |
3803 | u16 netfid, FILE_UNIX_BASIC_INFO *pFindData) |
3804 | { | |
3805 | struct smb_t2_qfi_req *pSMB = NULL; | |
3806 | struct smb_t2_qfi_rsp *pSMBr = NULL; | |
3807 | int rc = 0; | |
3808 | int bytes_returned; | |
3809 | __u16 params, byte_count; | |
3810 | ||
3811 | UnixQFileInfoRetry: | |
3812 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3813 | (void **) &pSMBr); | |
3814 | if (rc) | |
3815 | return rc; | |
3816 | ||
3817 | params = 2 /* level */ + 2 /* fid */; | |
3818 | pSMB->t2.TotalDataCount = 0; | |
3819 | pSMB->t2.MaxParameterCount = cpu_to_le16(4); | |
3820 | /* BB find exact max data count below from sess structure BB */ | |
3821 | pSMB->t2.MaxDataCount = cpu_to_le16(CIFSMaxBufSize); | |
3822 | pSMB->t2.MaxSetupCount = 0; | |
3823 | pSMB->t2.Reserved = 0; | |
3824 | pSMB->t2.Flags = 0; | |
3825 | pSMB->t2.Timeout = 0; | |
3826 | pSMB->t2.Reserved2 = 0; | |
3827 | pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req, | |
3828 | Fid) - 4); | |
3829 | pSMB->t2.DataCount = 0; | |
3830 | pSMB->t2.DataOffset = 0; | |
3831 | pSMB->t2.SetupCount = 1; | |
3832 | pSMB->t2.Reserved3 = 0; | |
3833 | pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); | |
3834 | byte_count = params + 1 /* pad */ ; | |
3835 | pSMB->t2.TotalParameterCount = cpu_to_le16(params); | |
3836 | pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount; | |
3837 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC); | |
3838 | pSMB->Pad = 0; | |
3839 | pSMB->Fid = netfid; | |
be8e3b00 | 3840 | inc_rfc1001_len(pSMB, byte_count); |
7ac0febb | 3841 | pSMB->t2.ByteCount = cpu_to_le16(byte_count); |
c8634fd3 JL |
3842 | |
3843 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3844 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3845 | if (rc) { | |
a0a3036b | 3846 | cifs_dbg(FYI, "Send error in UnixQFileInfo = %d\n", rc); |
c8634fd3 JL |
3847 | } else { /* decode response */ |
3848 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
3849 | ||
820a803f | 3850 | if (rc || get_bcc(&pSMBr->hdr) < sizeof(FILE_UNIX_BASIC_INFO)) { |
f96637be | 3851 | cifs_dbg(VFS, "Malformed FILE_UNIX_BASIC_INFO response. Unix Extensions can be disabled on mount by specifying the nosfu mount option.\n"); |
c8634fd3 JL |
3852 | rc = -EIO; /* bad smb */ |
3853 | } else { | |
3854 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3855 | memcpy((char *) pFindData, | |
3856 | (char *) &pSMBr->hdr.Protocol + | |
3857 | data_offset, | |
3858 | sizeof(FILE_UNIX_BASIC_INFO)); | |
3859 | } | |
3860 | } | |
3861 | ||
3862 | cifs_buf_release(pSMB); | |
3863 | if (rc == -EAGAIN) | |
3864 | goto UnixQFileInfoRetry; | |
3865 | ||
3866 | return rc; | |
3867 | } | |
3868 | ||
1da177e4 | 3869 | int |
6d5786a3 | 3870 | CIFSSMBUnixQPathInfo(const unsigned int xid, struct cifs_tcon *tcon, |
1da177e4 | 3871 | const unsigned char *searchName, |
582d21e5 | 3872 | FILE_UNIX_BASIC_INFO *pFindData, |
737b758c | 3873 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
3874 | { |
3875 | /* SMB_QUERY_FILE_UNIX_BASIC */ | |
3876 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
3877 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
3878 | int rc = 0; | |
3879 | int bytes_returned = 0; | |
3880 | int name_len; | |
3881 | __u16 params, byte_count; | |
3882 | ||
f96637be | 3883 | cifs_dbg(FYI, "In QPathInfo (Unix) the path %s\n", searchName); |
1da177e4 LT |
3884 | UnixQPathInfoRetry: |
3885 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3886 | (void **) &pSMBr); | |
3887 | if (rc) | |
3888 | return rc; | |
3889 | ||
3890 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3891 | name_len = | |
acbbb76a SF |
3892 | cifsConvertToUTF16((__le16 *) pSMB->FileName, searchName, |
3893 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
3894 | name_len++; /* trailing null */ |
3895 | name_len *= 2; | |
340625e6 RS |
3896 | } else { |
3897 | name_len = copy_path_name(pSMB->FileName, searchName); | |
1da177e4 LT |
3898 | } |
3899 | ||
50c2f753 | 3900 | params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */; |
1da177e4 LT |
3901 | pSMB->TotalDataCount = 0; |
3902 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
3903 | /* BB find exact max SMB PDU from sess structure BB */ | |
50c2f753 | 3904 | pSMB->MaxDataCount = cpu_to_le16(4000); |
1da177e4 LT |
3905 | pSMB->MaxSetupCount = 0; |
3906 | pSMB->Reserved = 0; | |
3907 | pSMB->Flags = 0; | |
3908 | pSMB->Timeout = 0; | |
3909 | pSMB->Reserved2 = 0; | |
3910 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 3911 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
3912 | pSMB->DataCount = 0; |
3913 | pSMB->DataOffset = 0; | |
3914 | pSMB->SetupCount = 1; | |
3915 | pSMB->Reserved3 = 0; | |
3916 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
3917 | byte_count = params + 1 /* pad */ ; | |
3918 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3919 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3920 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC); | |
3921 | pSMB->Reserved4 = 0; | |
be8e3b00 | 3922 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
3923 | pSMB->ByteCount = cpu_to_le16(byte_count); |
3924 | ||
3925 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3926 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3927 | if (rc) { | |
a0a3036b | 3928 | cifs_dbg(FYI, "Send error in UnixQPathInfo = %d\n", rc); |
1da177e4 LT |
3929 | } else { /* decode response */ |
3930 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
3931 | ||
820a803f | 3932 | if (rc || get_bcc(&pSMBr->hdr) < sizeof(FILE_UNIX_BASIC_INFO)) { |
f96637be | 3933 | cifs_dbg(VFS, "Malformed FILE_UNIX_BASIC_INFO response. Unix Extensions can be disabled on mount by specifying the nosfu mount option.\n"); |
1da177e4 LT |
3934 | rc = -EIO; /* bad smb */ |
3935 | } else { | |
3936 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3937 | memcpy((char *) pFindData, | |
3938 | (char *) &pSMBr->hdr.Protocol + | |
3939 | data_offset, | |
630f3f0c | 3940 | sizeof(FILE_UNIX_BASIC_INFO)); |
1da177e4 LT |
3941 | } |
3942 | } | |
3943 | cifs_buf_release(pSMB); | |
3944 | if (rc == -EAGAIN) | |
3945 | goto UnixQPathInfoRetry; | |
3946 | ||
3947 | return rc; | |
3948 | } | |
3949 | ||
1da177e4 LT |
3950 | /* xid, tcon, searchName and codepage are input parms, rest are returned */ |
3951 | int | |
6d5786a3 | 3952 | CIFSFindFirst(const unsigned int xid, struct cifs_tcon *tcon, |
c052e2b4 | 3953 | const char *searchName, struct cifs_sb_info *cifs_sb, |
2608bee7 | 3954 | __u16 *pnetfid, __u16 search_flags, |
c052e2b4 | 3955 | struct cifs_search_info *psrch_inf, bool msearch) |
1da177e4 LT |
3956 | { |
3957 | /* level 257 SMB_ */ | |
3958 | TRANSACTION2_FFIRST_REQ *pSMB = NULL; | |
3959 | TRANSACTION2_FFIRST_RSP *pSMBr = NULL; | |
ad7a2926 | 3960 | T2_FFIRST_RSP_PARMS *parms; |
1da177e4 LT |
3961 | int rc = 0; |
3962 | int bytes_returned = 0; | |
c052e2b4 | 3963 | int name_len, remap; |
1da177e4 | 3964 | __u16 params, byte_count; |
c052e2b4 | 3965 | struct nls_table *nls_codepage; |
1da177e4 | 3966 | |
f96637be | 3967 | cifs_dbg(FYI, "In FindFirst for %s\n", searchName); |
1da177e4 LT |
3968 | |
3969 | findFirstRetry: | |
3970 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3971 | (void **) &pSMBr); | |
3972 | if (rc) | |
3973 | return rc; | |
3974 | ||
c052e2b4 | 3975 | nls_codepage = cifs_sb->local_nls; |
2baa2682 | 3976 | remap = cifs_remap(cifs_sb); |
c052e2b4 | 3977 | |
1da177e4 LT |
3978 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
3979 | name_len = | |
acbbb76a SF |
3980 | cifsConvertToUTF16((__le16 *) pSMB->FileName, searchName, |
3981 | PATH_MAX, nls_codepage, remap); | |
737b758c SF |
3982 | /* We can not add the asterik earlier in case |
3983 | it got remapped to 0xF03A as if it were part of the | |
3984 | directory name instead of a wildcard */ | |
1da177e4 | 3985 | name_len *= 2; |
c052e2b4 SP |
3986 | if (msearch) { |
3987 | pSMB->FileName[name_len] = CIFS_DIR_SEP(cifs_sb); | |
3988 | pSMB->FileName[name_len+1] = 0; | |
3989 | pSMB->FileName[name_len+2] = '*'; | |
3990 | pSMB->FileName[name_len+3] = 0; | |
3991 | name_len += 4; /* now the trailing null */ | |
3992 | /* null terminate just in case */ | |
3993 | pSMB->FileName[name_len] = 0; | |
3994 | pSMB->FileName[name_len+1] = 0; | |
3995 | name_len += 2; | |
3996 | } | |
340625e6 RS |
3997 | } else { |
3998 | name_len = copy_path_name(pSMB->FileName, searchName); | |
c052e2b4 | 3999 | if (msearch) { |
340625e6 RS |
4000 | if (WARN_ON_ONCE(name_len > PATH_MAX-2)) |
4001 | name_len = PATH_MAX-2; | |
4002 | /* overwrite nul byte */ | |
4003 | pSMB->FileName[name_len-1] = CIFS_DIR_SEP(cifs_sb); | |
4004 | pSMB->FileName[name_len] = '*'; | |
4005 | pSMB->FileName[name_len+1] = 0; | |
4006 | name_len += 2; | |
c052e2b4 | 4007 | } |
1da177e4 LT |
4008 | } |
4009 | ||
4010 | params = 12 + name_len /* includes null */ ; | |
4011 | pSMB->TotalDataCount = 0; /* no EAs */ | |
4012 | pSMB->MaxParameterCount = cpu_to_le16(10); | |
c974befa | 4013 | pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize & 0xFFFFFF00); |
1da177e4 LT |
4014 | pSMB->MaxSetupCount = 0; |
4015 | pSMB->Reserved = 0; | |
4016 | pSMB->Flags = 0; | |
4017 | pSMB->Timeout = 0; | |
4018 | pSMB->Reserved2 = 0; | |
4019 | byte_count = params + 1 /* pad */ ; | |
4020 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4021 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4022 | pSMB->ParameterOffset = cpu_to_le16( | |
88274815 SF |
4023 | offsetof(struct smb_com_transaction2_ffirst_req, SearchAttributes) |
4024 | - 4); | |
1da177e4 LT |
4025 | pSMB->DataCount = 0; |
4026 | pSMB->DataOffset = 0; | |
4027 | pSMB->SetupCount = 1; /* one byte, no need to make endian neutral */ | |
4028 | pSMB->Reserved3 = 0; | |
4029 | pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_FIRST); | |
4030 | pSMB->SearchAttributes = | |
4031 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
4032 | ATTR_DIRECTORY); | |
50c2f753 | 4033 | pSMB->SearchCount = cpu_to_le16(CIFSMaxBufSize/sizeof(FILE_UNIX_INFO)); |
2608bee7 | 4034 | pSMB->SearchFlags = cpu_to_le16(search_flags); |
1da177e4 LT |
4035 | pSMB->InformationLevel = cpu_to_le16(psrch_inf->info_level); |
4036 | ||
4037 | /* BB what should we set StorageType to? Does it matter? BB */ | |
4038 | pSMB->SearchStorageType = 0; | |
be8e3b00 | 4039 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4040 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4041 | ||
4042 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4043 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 4044 | cifs_stats_inc(&tcon->stats.cifs_stats.num_ffirst); |
1da177e4 | 4045 | |
88274815 SF |
4046 | if (rc) {/* BB add logic to retry regular search if Unix search |
4047 | rejected unexpectedly by server */ | |
1da177e4 | 4048 | /* BB Add code to handle unsupported level rc */ |
f96637be | 4049 | cifs_dbg(FYI, "Error in FindFirst = %d\n", rc); |
1982c344 | 4050 | |
88274815 | 4051 | cifs_buf_release(pSMB); |
1da177e4 LT |
4052 | |
4053 | /* BB eventually could optimize out free and realloc of buf */ | |
4054 | /* for this case */ | |
4055 | if (rc == -EAGAIN) | |
4056 | goto findFirstRetry; | |
4057 | } else { /* decode response */ | |
4058 | /* BB remember to free buffer if error BB */ | |
4059 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
790fe579 | 4060 | if (rc == 0) { |
b77d753c SF |
4061 | unsigned int lnoff; |
4062 | ||
1da177e4 | 4063 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) |
4b18f2a9 | 4064 | psrch_inf->unicode = true; |
1da177e4 | 4065 | else |
4b18f2a9 | 4066 | psrch_inf->unicode = false; |
1da177e4 LT |
4067 | |
4068 | psrch_inf->ntwrk_buf_start = (char *)pSMBr; | |
01d1bd76 | 4069 | psrch_inf->smallBuf = false; |
50c2f753 SF |
4070 | psrch_inf->srch_entries_start = |
4071 | (char *) &pSMBr->hdr.Protocol + | |
1da177e4 | 4072 | le16_to_cpu(pSMBr->t2.DataOffset); |
1da177e4 LT |
4073 | parms = (T2_FFIRST_RSP_PARMS *)((char *) &pSMBr->hdr.Protocol + |
4074 | le16_to_cpu(pSMBr->t2.ParameterOffset)); | |
4075 | ||
790fe579 | 4076 | if (parms->EndofSearch) |
4b18f2a9 | 4077 | psrch_inf->endOfSearch = true; |
1da177e4 | 4078 | else |
4b18f2a9 | 4079 | psrch_inf->endOfSearch = false; |
1da177e4 | 4080 | |
50c2f753 SF |
4081 | psrch_inf->entries_in_buffer = |
4082 | le16_to_cpu(parms->SearchCount); | |
60808233 | 4083 | psrch_inf->index_of_last_entry = 2 /* skip . and .. */ + |
1da177e4 | 4084 | psrch_inf->entries_in_buffer; |
b77d753c | 4085 | lnoff = le16_to_cpu(parms->LastNameOffset); |
c974befa | 4086 | if (CIFSMaxBufSize < lnoff) { |
f96637be | 4087 | cifs_dbg(VFS, "ignoring corrupt resume name\n"); |
b77d753c SF |
4088 | psrch_inf->last_entry = NULL; |
4089 | return rc; | |
4090 | } | |
4091 | ||
0752f152 | 4092 | psrch_inf->last_entry = psrch_inf->srch_entries_start + |
b77d753c SF |
4093 | lnoff; |
4094 | ||
c052e2b4 SP |
4095 | if (pnetfid) |
4096 | *pnetfid = parms->SearchHandle; | |
1da177e4 LT |
4097 | } else { |
4098 | cifs_buf_release(pSMB); | |
4099 | } | |
4100 | } | |
4101 | ||
4102 | return rc; | |
4103 | } | |
4104 | ||
6d5786a3 PS |
4105 | int CIFSFindNext(const unsigned int xid, struct cifs_tcon *tcon, |
4106 | __u16 searchHandle, __u16 search_flags, | |
4107 | struct cifs_search_info *psrch_inf) | |
1da177e4 LT |
4108 | { |
4109 | TRANSACTION2_FNEXT_REQ *pSMB = NULL; | |
4110 | TRANSACTION2_FNEXT_RSP *pSMBr = NULL; | |
ad7a2926 | 4111 | T2_FNEXT_RSP_PARMS *parms; |
1da177e4 LT |
4112 | char *response_data; |
4113 | int rc = 0; | |
9438fabb JL |
4114 | int bytes_returned; |
4115 | unsigned int name_len; | |
1da177e4 LT |
4116 | __u16 params, byte_count; |
4117 | ||
f96637be | 4118 | cifs_dbg(FYI, "In FindNext\n"); |
1da177e4 | 4119 | |
4b18f2a9 | 4120 | if (psrch_inf->endOfSearch) |
1da177e4 LT |
4121 | return -ENOENT; |
4122 | ||
4123 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4124 | (void **) &pSMBr); | |
4125 | if (rc) | |
4126 | return rc; | |
4127 | ||
50c2f753 | 4128 | params = 14; /* includes 2 bytes of null string, converted to LE below*/ |
1da177e4 LT |
4129 | byte_count = 0; |
4130 | pSMB->TotalDataCount = 0; /* no EAs */ | |
4131 | pSMB->MaxParameterCount = cpu_to_le16(8); | |
c974befa | 4132 | pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize & 0xFFFFFF00); |
1da177e4 LT |
4133 | pSMB->MaxSetupCount = 0; |
4134 | pSMB->Reserved = 0; | |
4135 | pSMB->Flags = 0; | |
4136 | pSMB->Timeout = 0; | |
4137 | pSMB->Reserved2 = 0; | |
4138 | pSMB->ParameterOffset = cpu_to_le16( | |
4139 | offsetof(struct smb_com_transaction2_fnext_req,SearchHandle) - 4); | |
4140 | pSMB->DataCount = 0; | |
4141 | pSMB->DataOffset = 0; | |
4142 | pSMB->SetupCount = 1; | |
4143 | pSMB->Reserved3 = 0; | |
4144 | pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_NEXT); | |
4145 | pSMB->SearchHandle = searchHandle; /* always kept as le */ | |
4146 | pSMB->SearchCount = | |
630f3f0c | 4147 | cpu_to_le16(CIFSMaxBufSize / sizeof(FILE_UNIX_INFO)); |
1da177e4 LT |
4148 | pSMB->InformationLevel = cpu_to_le16(psrch_inf->info_level); |
4149 | pSMB->ResumeKey = psrch_inf->resume_key; | |
2608bee7 | 4150 | pSMB->SearchFlags = cpu_to_le16(search_flags); |
1da177e4 LT |
4151 | |
4152 | name_len = psrch_inf->resume_name_len; | |
4153 | params += name_len; | |
790fe579 | 4154 | if (name_len < PATH_MAX) { |
1da177e4 LT |
4155 | memcpy(pSMB->ResumeFileName, psrch_inf->presume_name, name_len); |
4156 | byte_count += name_len; | |
ef6724e3 SF |
4157 | /* 14 byte parm len above enough for 2 byte null terminator */ |
4158 | pSMB->ResumeFileName[name_len] = 0; | |
4159 | pSMB->ResumeFileName[name_len+1] = 0; | |
1da177e4 LT |
4160 | } else { |
4161 | rc = -EINVAL; | |
4162 | goto FNext2_err_exit; | |
4163 | } | |
4164 | byte_count = params + 1 /* pad */ ; | |
4165 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4166 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
be8e3b00 | 4167 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 | 4168 | pSMB->ByteCount = cpu_to_le16(byte_count); |
50c2f753 | 4169 | |
1da177e4 LT |
4170 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, |
4171 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
44c58186 | 4172 | cifs_stats_inc(&tcon->stats.cifs_stats.num_fnext); |
1da177e4 LT |
4173 | if (rc) { |
4174 | if (rc == -EBADF) { | |
4b18f2a9 | 4175 | psrch_inf->endOfSearch = true; |
6353450a | 4176 | cifs_buf_release(pSMB); |
50c2f753 | 4177 | rc = 0; /* search probably was closed at end of search*/ |
1da177e4 | 4178 | } else |
f96637be | 4179 | cifs_dbg(FYI, "FindNext returned = %d\n", rc); |
1da177e4 LT |
4180 | } else { /* decode response */ |
4181 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
50c2f753 | 4182 | |
790fe579 | 4183 | if (rc == 0) { |
b77d753c SF |
4184 | unsigned int lnoff; |
4185 | ||
1da177e4 LT |
4186 | /* BB fixme add lock for file (srch_info) struct here */ |
4187 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) | |
4b18f2a9 | 4188 | psrch_inf->unicode = true; |
1da177e4 | 4189 | else |
4b18f2a9 | 4190 | psrch_inf->unicode = false; |
1da177e4 LT |
4191 | response_data = (char *) &pSMBr->hdr.Protocol + |
4192 | le16_to_cpu(pSMBr->t2.ParameterOffset); | |
4193 | parms = (T2_FNEXT_RSP_PARMS *)response_data; | |
4194 | response_data = (char *)&pSMBr->hdr.Protocol + | |
4195 | le16_to_cpu(pSMBr->t2.DataOffset); | |
790fe579 | 4196 | if (psrch_inf->smallBuf) |
d47d7c1a SF |
4197 | cifs_small_buf_release( |
4198 | psrch_inf->ntwrk_buf_start); | |
4199 | else | |
4200 | cifs_buf_release(psrch_inf->ntwrk_buf_start); | |
1da177e4 LT |
4201 | psrch_inf->srch_entries_start = response_data; |
4202 | psrch_inf->ntwrk_buf_start = (char *)pSMB; | |
01d1bd76 | 4203 | psrch_inf->smallBuf = false; |
790fe579 | 4204 | if (parms->EndofSearch) |
4b18f2a9 | 4205 | psrch_inf->endOfSearch = true; |
1da177e4 | 4206 | else |
4b18f2a9 | 4207 | psrch_inf->endOfSearch = false; |
50c2f753 SF |
4208 | psrch_inf->entries_in_buffer = |
4209 | le16_to_cpu(parms->SearchCount); | |
1da177e4 LT |
4210 | psrch_inf->index_of_last_entry += |
4211 | psrch_inf->entries_in_buffer; | |
b77d753c | 4212 | lnoff = le16_to_cpu(parms->LastNameOffset); |
c974befa | 4213 | if (CIFSMaxBufSize < lnoff) { |
f96637be | 4214 | cifs_dbg(VFS, "ignoring corrupt resume name\n"); |
b77d753c SF |
4215 | psrch_inf->last_entry = NULL; |
4216 | return rc; | |
4217 | } else | |
4218 | psrch_inf->last_entry = | |
4219 | psrch_inf->srch_entries_start + lnoff; | |
4220 | ||
f96637be JP |
4221 | /* cifs_dbg(FYI, "fnxt2 entries in buf %d index_of_last %d\n", |
4222 | psrch_inf->entries_in_buffer, psrch_inf->index_of_last_entry); */ | |
1da177e4 LT |
4223 | |
4224 | /* BB fixme add unlock here */ | |
4225 | } | |
4226 | ||
4227 | } | |
4228 | ||
4229 | /* BB On error, should we leave previous search buf (and count and | |
4230 | last entry fields) intact or free the previous one? */ | |
4231 | ||
4232 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
4233 | since file handle passed in no longer valid */ | |
4234 | FNext2_err_exit: | |
4235 | if (rc != 0) | |
4236 | cifs_buf_release(pSMB); | |
1da177e4 LT |
4237 | return rc; |
4238 | } | |
4239 | ||
4240 | int | |
6d5786a3 | 4241 | CIFSFindClose(const unsigned int xid, struct cifs_tcon *tcon, |
50c2f753 | 4242 | const __u16 searchHandle) |
1da177e4 LT |
4243 | { |
4244 | int rc = 0; | |
4245 | FINDCLOSE_REQ *pSMB = NULL; | |
1da177e4 | 4246 | |
f96637be | 4247 | cifs_dbg(FYI, "In CIFSSMBFindClose\n"); |
1da177e4 LT |
4248 | rc = small_smb_init(SMB_COM_FIND_CLOSE2, 1, tcon, (void **)&pSMB); |
4249 | ||
4250 | /* no sense returning error if session restarted | |
4251 | as file handle has been closed */ | |
790fe579 | 4252 | if (rc == -EAGAIN) |
1da177e4 LT |
4253 | return 0; |
4254 | if (rc) | |
4255 | return rc; | |
4256 | ||
1da177e4 LT |
4257 | pSMB->FileID = searchHandle; |
4258 | pSMB->ByteCount = 0; | |
792af7b0 | 4259 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
da502f7d | 4260 | cifs_small_buf_release(pSMB); |
ad7a2926 | 4261 | if (rc) |
f96637be | 4262 | cifs_dbg(VFS, "Send error in FindClose = %d\n", rc); |
ad7a2926 | 4263 | |
44c58186 | 4264 | cifs_stats_inc(&tcon->stats.cifs_stats.num_fclose); |
1da177e4 LT |
4265 | |
4266 | /* Since session is dead, search handle closed on server already */ | |
4267 | if (rc == -EAGAIN) | |
4268 | rc = 0; | |
4269 | ||
4270 | return rc; | |
4271 | } | |
4272 | ||
1da177e4 | 4273 | int |
6d5786a3 | 4274 | CIFSGetSrvInodeNumber(const unsigned int xid, struct cifs_tcon *tcon, |
1208ef1f | 4275 | const char *search_name, __u64 *inode_number, |
50c2f753 | 4276 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
4277 | { |
4278 | int rc = 0; | |
4279 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
4280 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
4281 | int name_len, bytes_returned; | |
4282 | __u16 params, byte_count; | |
4283 | ||
f96637be | 4284 | cifs_dbg(FYI, "In GetSrvInodeNum for %s\n", search_name); |
790fe579 | 4285 | if (tcon == NULL) |
50c2f753 | 4286 | return -ENODEV; |
1da177e4 LT |
4287 | |
4288 | GetInodeNumberRetry: | |
4289 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
50c2f753 | 4290 | (void **) &pSMBr); |
1da177e4 LT |
4291 | if (rc) |
4292 | return rc; | |
4293 | ||
1da177e4 LT |
4294 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { |
4295 | name_len = | |
acbbb76a | 4296 | cifsConvertToUTF16((__le16 *) pSMB->FileName, |
1208ef1f | 4297 | search_name, PATH_MAX, nls_codepage, |
acbbb76a | 4298 | remap); |
1da177e4 LT |
4299 | name_len++; /* trailing null */ |
4300 | name_len *= 2; | |
340625e6 RS |
4301 | } else { |
4302 | name_len = copy_path_name(pSMB->FileName, search_name); | |
1da177e4 LT |
4303 | } |
4304 | ||
4305 | params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; | |
4306 | pSMB->TotalDataCount = 0; | |
4307 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
4308 | /* BB find exact max data count below from sess structure BB */ | |
4309 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
4310 | pSMB->MaxSetupCount = 0; | |
4311 | pSMB->Reserved = 0; | |
4312 | pSMB->Flags = 0; | |
4313 | pSMB->Timeout = 0; | |
4314 | pSMB->Reserved2 = 0; | |
4315 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4316 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
4317 | pSMB->DataCount = 0; |
4318 | pSMB->DataOffset = 0; | |
4319 | pSMB->SetupCount = 1; | |
4320 | pSMB->Reserved3 = 0; | |
4321 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
4322 | byte_count = params + 1 /* pad */ ; | |
4323 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4324 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4325 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_INTERNAL_INFO); | |
4326 | pSMB->Reserved4 = 0; | |
be8e3b00 | 4327 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4328 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4329 | ||
4330 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4331 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4332 | if (rc) { | |
f96637be | 4333 | cifs_dbg(FYI, "error %d in QueryInternalInfo\n", rc); |
1da177e4 LT |
4334 | } else { |
4335 | /* decode response */ | |
4336 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
1da177e4 | 4337 | /* BB also check enough total bytes returned */ |
820a803f | 4338 | if (rc || get_bcc(&pSMBr->hdr) < 2) |
1da177e4 LT |
4339 | /* If rc should we check for EOPNOSUPP and |
4340 | disable the srvino flag? or in caller? */ | |
4341 | rc = -EIO; /* bad smb */ | |
50c2f753 | 4342 | else { |
1da177e4 LT |
4343 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); |
4344 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
50c2f753 | 4345 | struct file_internal_info *pfinfo; |
1da177e4 | 4346 | /* BB Do we need a cast or hash here ? */ |
790fe579 | 4347 | if (count < 8) { |
a0a3036b | 4348 | cifs_dbg(FYI, "Invalid size ret in QryIntrnlInf\n"); |
1da177e4 LT |
4349 | rc = -EIO; |
4350 | goto GetInodeNumOut; | |
4351 | } | |
4352 | pfinfo = (struct file_internal_info *) | |
4353 | (data_offset + (char *) &pSMBr->hdr.Protocol); | |
85a6dac5 | 4354 | *inode_number = le64_to_cpu(pfinfo->UniqueId); |
1da177e4 LT |
4355 | } |
4356 | } | |
4357 | GetInodeNumOut: | |
4358 | cifs_buf_release(pSMB); | |
4359 | if (rc == -EAGAIN) | |
4360 | goto GetInodeNumberRetry; | |
4361 | return rc; | |
4362 | } | |
1da177e4 LT |
4363 | |
4364 | int | |
6d5786a3 | 4365 | CIFSGetDFSRefer(const unsigned int xid, struct cifs_ses *ses, |
b669f33c | 4366 | const char *search_name, struct dfs_info3_param **target_nodes, |
c2cf07d5 | 4367 | unsigned int *num_of_nodes, |
737b758c | 4368 | const struct nls_table *nls_codepage, int remap) |
1da177e4 LT |
4369 | { |
4370 | /* TRANS2_GET_DFS_REFERRAL */ | |
4371 | TRANSACTION2_GET_DFS_REFER_REQ *pSMB = NULL; | |
4372 | TRANSACTION2_GET_DFS_REFER_RSP *pSMBr = NULL; | |
1da177e4 LT |
4373 | int rc = 0; |
4374 | int bytes_returned; | |
4375 | int name_len; | |
1da177e4 | 4376 | __u16 params, byte_count; |
c2cf07d5 SF |
4377 | *num_of_nodes = 0; |
4378 | *target_nodes = NULL; | |
1da177e4 | 4379 | |
f96637be | 4380 | cifs_dbg(FYI, "In GetDFSRefer the path %s\n", search_name); |
b327a717 | 4381 | if (ses == NULL || ses->tcon_ipc == NULL) |
1da177e4 | 4382 | return -ENODEV; |
b327a717 | 4383 | |
1da177e4 | 4384 | getDFSRetry: |
09ba47b4 PA |
4385 | /* |
4386 | * Use smb_init_no_reconnect() instead of smb_init() as | |
4387 | * CIFSGetDFSRefer() may be called from cifs_reconnect_tcon() and thus | |
4388 | * causing an infinite recursion. | |
4389 | */ | |
4390 | rc = smb_init_no_reconnect(SMB_COM_TRANSACTION2, 15, ses->tcon_ipc, | |
4391 | (void **)&pSMB, (void **)&pSMBr); | |
1da177e4 LT |
4392 | if (rc) |
4393 | return rc; | |
50c2f753 SF |
4394 | |
4395 | /* server pointer checked in called function, | |
1982c344 | 4396 | but should never be null here anyway */ |
88257360 | 4397 | pSMB->hdr.Mid = get_next_mid(ses->server); |
b327a717 | 4398 | pSMB->hdr.Tid = ses->tcon_ipc->tid; |
1da177e4 | 4399 | pSMB->hdr.Uid = ses->Suid; |
26f57364 | 4400 | if (ses->capabilities & CAP_STATUS32) |
1da177e4 | 4401 | pSMB->hdr.Flags2 |= SMBFLG2_ERR_STATUS; |
26f57364 | 4402 | if (ses->capabilities & CAP_DFS) |
1da177e4 | 4403 | pSMB->hdr.Flags2 |= SMBFLG2_DFS; |
1da177e4 LT |
4404 | |
4405 | if (ses->capabilities & CAP_UNICODE) { | |
4406 | pSMB->hdr.Flags2 |= SMBFLG2_UNICODE; | |
4407 | name_len = | |
acbbb76a | 4408 | cifsConvertToUTF16((__le16 *) pSMB->RequestFileName, |
b669f33c | 4409 | search_name, PATH_MAX, nls_codepage, |
acbbb76a | 4410 | remap); |
1da177e4 LT |
4411 | name_len++; /* trailing null */ |
4412 | name_len *= 2; | |
50c2f753 | 4413 | } else { /* BB improve the check for buffer overruns BB */ |
340625e6 | 4414 | name_len = copy_path_name(pSMB->RequestFileName, search_name); |
1da177e4 LT |
4415 | } |
4416 | ||
65c3b205 | 4417 | if (ses->server->sign) |
38d77c50 | 4418 | pSMB->hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE; |
1a4e15a0 | 4419 | |
50c2f753 | 4420 | pSMB->hdr.Uid = ses->Suid; |
1a4e15a0 | 4421 | |
1da177e4 LT |
4422 | params = 2 /* level */ + name_len /*includes null */ ; |
4423 | pSMB->TotalDataCount = 0; | |
4424 | pSMB->DataCount = 0; | |
4425 | pSMB->DataOffset = 0; | |
4426 | pSMB->MaxParameterCount = 0; | |
582d21e5 SF |
4427 | /* BB find exact max SMB PDU from sess structure BB */ |
4428 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
1da177e4 LT |
4429 | pSMB->MaxSetupCount = 0; |
4430 | pSMB->Reserved = 0; | |
4431 | pSMB->Flags = 0; | |
4432 | pSMB->Timeout = 0; | |
4433 | pSMB->Reserved2 = 0; | |
4434 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4435 | struct smb_com_transaction2_get_dfs_refer_req, MaxReferralLevel) - 4); |
1da177e4 LT |
4436 | pSMB->SetupCount = 1; |
4437 | pSMB->Reserved3 = 0; | |
4438 | pSMB->SubCommand = cpu_to_le16(TRANS2_GET_DFS_REFERRAL); | |
4439 | byte_count = params + 3 /* pad */ ; | |
4440 | pSMB->ParameterCount = cpu_to_le16(params); | |
4441 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
4442 | pSMB->MaxReferralLevel = cpu_to_le16(3); | |
be8e3b00 | 4443 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4444 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4445 | ||
4446 | rc = SendReceive(xid, ses, (struct smb_hdr *) pSMB, | |
4447 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4448 | if (rc) { | |
f96637be | 4449 | cifs_dbg(FYI, "Send error in GetDFSRefer = %d\n", rc); |
c2cf07d5 SF |
4450 | goto GetDFSRefExit; |
4451 | } | |
4452 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
1da177e4 | 4453 | |
c2cf07d5 | 4454 | /* BB Also check if enough total bytes returned? */ |
820a803f | 4455 | if (rc || get_bcc(&pSMBr->hdr) < 17) { |
c2cf07d5 | 4456 | rc = -EIO; /* bad smb */ |
fec4585f IM |
4457 | goto GetDFSRefExit; |
4458 | } | |
c2cf07d5 | 4459 | |
f96637be JP |
4460 | cifs_dbg(FYI, "Decoding GetDFSRefer response BCC: %d Offset %d\n", |
4461 | get_bcc(&pSMBr->hdr), le16_to_cpu(pSMBr->t2.DataOffset)); | |
1da177e4 | 4462 | |
fec4585f | 4463 | /* parse returned result into more usable form */ |
4ecce920 AA |
4464 | rc = parse_dfs_referrals(&pSMBr->dfs_data, |
4465 | le16_to_cpu(pSMBr->t2.DataCount), | |
4466 | num_of_nodes, target_nodes, nls_codepage, | |
4467 | remap, search_name, | |
284316dd | 4468 | (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) != 0); |
c2cf07d5 | 4469 | |
1da177e4 | 4470 | GetDFSRefExit: |
0d817bc0 | 4471 | cifs_buf_release(pSMB); |
1da177e4 LT |
4472 | |
4473 | if (rc == -EAGAIN) | |
4474 | goto getDFSRetry; | |
4475 | ||
4476 | return rc; | |
4477 | } | |
4478 | ||
20962438 SF |
4479 | /* Query File System Info such as free space to old servers such as Win 9x */ |
4480 | int | |
6d5786a3 PS |
4481 | SMBOldQFSInfo(const unsigned int xid, struct cifs_tcon *tcon, |
4482 | struct kstatfs *FSData) | |
20962438 SF |
4483 | { |
4484 | /* level 0x01 SMB_QUERY_FILE_SYSTEM_INFO */ | |
4485 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4486 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4487 | FILE_SYSTEM_ALLOC_INFO *response_data; | |
4488 | int rc = 0; | |
4489 | int bytes_returned = 0; | |
4490 | __u16 params, byte_count; | |
4491 | ||
f96637be | 4492 | cifs_dbg(FYI, "OldQFSInfo\n"); |
20962438 SF |
4493 | oldQFSInfoRetry: |
4494 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4495 | (void **) &pSMBr); | |
4496 | if (rc) | |
4497 | return rc; | |
20962438 SF |
4498 | |
4499 | params = 2; /* level */ | |
4500 | pSMB->TotalDataCount = 0; | |
4501 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
4502 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
4503 | pSMB->MaxSetupCount = 0; | |
4504 | pSMB->Reserved = 0; | |
4505 | pSMB->Flags = 0; | |
4506 | pSMB->Timeout = 0; | |
4507 | pSMB->Reserved2 = 0; | |
4508 | byte_count = params + 1 /* pad */ ; | |
4509 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4510 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4511 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
4512 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
4513 | pSMB->DataCount = 0; | |
4514 | pSMB->DataOffset = 0; | |
4515 | pSMB->SetupCount = 1; | |
4516 | pSMB->Reserved3 = 0; | |
4517 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4518 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_ALLOCATION); | |
be8e3b00 | 4519 | inc_rfc1001_len(pSMB, byte_count); |
20962438 SF |
4520 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4521 | ||
4522 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4523 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4524 | if (rc) { | |
f96637be | 4525 | cifs_dbg(FYI, "Send error in QFSInfo = %d\n", rc); |
20962438 SF |
4526 | } else { /* decode response */ |
4527 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4528 | ||
820a803f | 4529 | if (rc || get_bcc(&pSMBr->hdr) < 18) |
20962438 SF |
4530 | rc = -EIO; /* bad smb */ |
4531 | else { | |
4532 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
f96637be | 4533 | cifs_dbg(FYI, "qfsinf resp BCC: %d Offset %d\n", |
820a803f | 4534 | get_bcc(&pSMBr->hdr), data_offset); |
20962438 | 4535 | |
50c2f753 | 4536 | response_data = (FILE_SYSTEM_ALLOC_INFO *) |
20962438 SF |
4537 | (((char *) &pSMBr->hdr.Protocol) + data_offset); |
4538 | FSData->f_bsize = | |
4539 | le16_to_cpu(response_data->BytesPerSector) * | |
4540 | le32_to_cpu(response_data-> | |
4541 | SectorsPerAllocationUnit); | |
5a519bea SF |
4542 | /* |
4543 | * much prefer larger but if server doesn't report | |
4544 | * a valid size than 4K is a reasonable minimum | |
4545 | */ | |
4546 | if (FSData->f_bsize < 512) | |
4547 | FSData->f_bsize = 4096; | |
4548 | ||
20962438 | 4549 | FSData->f_blocks = |
50c2f753 | 4550 | le32_to_cpu(response_data->TotalAllocationUnits); |
20962438 SF |
4551 | FSData->f_bfree = FSData->f_bavail = |
4552 | le32_to_cpu(response_data->FreeAllocationUnits); | |
f96637be JP |
4553 | cifs_dbg(FYI, "Blocks: %lld Free: %lld Block size %ld\n", |
4554 | (unsigned long long)FSData->f_blocks, | |
4555 | (unsigned long long)FSData->f_bfree, | |
4556 | FSData->f_bsize); | |
20962438 SF |
4557 | } |
4558 | } | |
4559 | cifs_buf_release(pSMB); | |
4560 | ||
4561 | if (rc == -EAGAIN) | |
4562 | goto oldQFSInfoRetry; | |
4563 | ||
4564 | return rc; | |
4565 | } | |
4566 | ||
1da177e4 | 4567 | int |
6d5786a3 PS |
4568 | CIFSSMBQFSInfo(const unsigned int xid, struct cifs_tcon *tcon, |
4569 | struct kstatfs *FSData) | |
1da177e4 LT |
4570 | { |
4571 | /* level 0x103 SMB_QUERY_FILE_SYSTEM_INFO */ | |
4572 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4573 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4574 | FILE_SYSTEM_INFO *response_data; | |
4575 | int rc = 0; | |
4576 | int bytes_returned = 0; | |
4577 | __u16 params, byte_count; | |
4578 | ||
f96637be | 4579 | cifs_dbg(FYI, "In QFSInfo\n"); |
1da177e4 LT |
4580 | QFSInfoRetry: |
4581 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4582 | (void **) &pSMBr); | |
4583 | if (rc) | |
4584 | return rc; | |
4585 | ||
4586 | params = 2; /* level */ | |
4587 | pSMB->TotalDataCount = 0; | |
4588 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
20962438 | 4589 | pSMB->MaxDataCount = cpu_to_le16(1000); |
1da177e4 LT |
4590 | pSMB->MaxSetupCount = 0; |
4591 | pSMB->Reserved = 0; | |
4592 | pSMB->Flags = 0; | |
4593 | pSMB->Timeout = 0; | |
4594 | pSMB->Reserved2 = 0; | |
4595 | byte_count = params + 1 /* pad */ ; | |
4596 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4597 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4598 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4599 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
1da177e4 LT |
4600 | pSMB->DataCount = 0; |
4601 | pSMB->DataOffset = 0; | |
4602 | pSMB->SetupCount = 1; | |
4603 | pSMB->Reserved3 = 0; | |
4604 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4605 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_SIZE_INFO); | |
be8e3b00 | 4606 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4607 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4608 | ||
4609 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4610 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4611 | if (rc) { | |
f96637be | 4612 | cifs_dbg(FYI, "Send error in QFSInfo = %d\n", rc); |
1da177e4 | 4613 | } else { /* decode response */ |
50c2f753 | 4614 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); |
1da177e4 | 4615 | |
820a803f | 4616 | if (rc || get_bcc(&pSMBr->hdr) < 24) |
1da177e4 LT |
4617 | rc = -EIO; /* bad smb */ |
4618 | else { | |
4619 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
1da177e4 LT |
4620 | |
4621 | response_data = | |
4622 | (FILE_SYSTEM_INFO | |
4623 | *) (((char *) &pSMBr->hdr.Protocol) + | |
4624 | data_offset); | |
4625 | FSData->f_bsize = | |
4626 | le32_to_cpu(response_data->BytesPerSector) * | |
4627 | le32_to_cpu(response_data-> | |
4628 | SectorsPerAllocationUnit); | |
5a519bea SF |
4629 | /* |
4630 | * much prefer larger but if server doesn't report | |
4631 | * a valid size than 4K is a reasonable minimum | |
4632 | */ | |
4633 | if (FSData->f_bsize < 512) | |
4634 | FSData->f_bsize = 4096; | |
4635 | ||
1da177e4 LT |
4636 | FSData->f_blocks = |
4637 | le64_to_cpu(response_data->TotalAllocationUnits); | |
4638 | FSData->f_bfree = FSData->f_bavail = | |
4639 | le64_to_cpu(response_data->FreeAllocationUnits); | |
f96637be JP |
4640 | cifs_dbg(FYI, "Blocks: %lld Free: %lld Block size %ld\n", |
4641 | (unsigned long long)FSData->f_blocks, | |
4642 | (unsigned long long)FSData->f_bfree, | |
4643 | FSData->f_bsize); | |
1da177e4 LT |
4644 | } |
4645 | } | |
4646 | cifs_buf_release(pSMB); | |
4647 | ||
4648 | if (rc == -EAGAIN) | |
4649 | goto QFSInfoRetry; | |
4650 | ||
4651 | return rc; | |
4652 | } | |
4653 | ||
4654 | int | |
6d5786a3 | 4655 | CIFSSMBQFSAttributeInfo(const unsigned int xid, struct cifs_tcon *tcon) |
1da177e4 LT |
4656 | { |
4657 | /* level 0x105 SMB_QUERY_FILE_SYSTEM_INFO */ | |
4658 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4659 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4660 | FILE_SYSTEM_ATTRIBUTE_INFO *response_data; | |
4661 | int rc = 0; | |
4662 | int bytes_returned = 0; | |
4663 | __u16 params, byte_count; | |
4664 | ||
f96637be | 4665 | cifs_dbg(FYI, "In QFSAttributeInfo\n"); |
1da177e4 LT |
4666 | QFSAttributeRetry: |
4667 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4668 | (void **) &pSMBr); | |
4669 | if (rc) | |
4670 | return rc; | |
4671 | ||
4672 | params = 2; /* level */ | |
4673 | pSMB->TotalDataCount = 0; | |
4674 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
4675 | /* BB find exact max SMB PDU from sess structure BB */ |
4676 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
4677 | pSMB->MaxSetupCount = 0; |
4678 | pSMB->Reserved = 0; | |
4679 | pSMB->Flags = 0; | |
4680 | pSMB->Timeout = 0; | |
4681 | pSMB->Reserved2 = 0; | |
4682 | byte_count = params + 1 /* pad */ ; | |
4683 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4684 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4685 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4686 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
1da177e4 LT |
4687 | pSMB->DataCount = 0; |
4688 | pSMB->DataOffset = 0; | |
4689 | pSMB->SetupCount = 1; | |
4690 | pSMB->Reserved3 = 0; | |
4691 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4692 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_ATTRIBUTE_INFO); | |
be8e3b00 | 4693 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4694 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4695 | ||
4696 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4697 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4698 | if (rc) { | |
f96637be | 4699 | cifs_dbg(VFS, "Send error in QFSAttributeInfo = %d\n", rc); |
1da177e4 LT |
4700 | } else { /* decode response */ |
4701 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4702 | ||
820a803f | 4703 | if (rc || get_bcc(&pSMBr->hdr) < 13) { |
50c2f753 | 4704 | /* BB also check if enough bytes returned */ |
1da177e4 LT |
4705 | rc = -EIO; /* bad smb */ |
4706 | } else { | |
4707 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4708 | response_data = | |
4709 | (FILE_SYSTEM_ATTRIBUTE_INFO | |
4710 | *) (((char *) &pSMBr->hdr.Protocol) + | |
4711 | data_offset); | |
4712 | memcpy(&tcon->fsAttrInfo, response_data, | |
26f57364 | 4713 | sizeof(FILE_SYSTEM_ATTRIBUTE_INFO)); |
1da177e4 LT |
4714 | } |
4715 | } | |
4716 | cifs_buf_release(pSMB); | |
4717 | ||
4718 | if (rc == -EAGAIN) | |
4719 | goto QFSAttributeRetry; | |
4720 | ||
4721 | return rc; | |
4722 | } | |
4723 | ||
4724 | int | |
6d5786a3 | 4725 | CIFSSMBQFSDeviceInfo(const unsigned int xid, struct cifs_tcon *tcon) |
1da177e4 LT |
4726 | { |
4727 | /* level 0x104 SMB_QUERY_FILE_SYSTEM_INFO */ | |
4728 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4729 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4730 | FILE_SYSTEM_DEVICE_INFO *response_data; | |
4731 | int rc = 0; | |
4732 | int bytes_returned = 0; | |
4733 | __u16 params, byte_count; | |
4734 | ||
f96637be | 4735 | cifs_dbg(FYI, "In QFSDeviceInfo\n"); |
1da177e4 LT |
4736 | QFSDeviceRetry: |
4737 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4738 | (void **) &pSMBr); | |
4739 | if (rc) | |
4740 | return rc; | |
4741 | ||
4742 | params = 2; /* level */ | |
4743 | pSMB->TotalDataCount = 0; | |
4744 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
4745 | /* BB find exact max SMB PDU from sess structure BB */ |
4746 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
4747 | pSMB->MaxSetupCount = 0; |
4748 | pSMB->Reserved = 0; | |
4749 | pSMB->Flags = 0; | |
4750 | pSMB->Timeout = 0; | |
4751 | pSMB->Reserved2 = 0; | |
4752 | byte_count = params + 1 /* pad */ ; | |
4753 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4754 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4755 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 4756 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); |
1da177e4 LT |
4757 | |
4758 | pSMB->DataCount = 0; | |
4759 | pSMB->DataOffset = 0; | |
4760 | pSMB->SetupCount = 1; | |
4761 | pSMB->Reserved3 = 0; | |
4762 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4763 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_DEVICE_INFO); | |
be8e3b00 | 4764 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4765 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4766 | ||
4767 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4768 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4769 | if (rc) { | |
f96637be | 4770 | cifs_dbg(FYI, "Send error in QFSDeviceInfo = %d\n", rc); |
1da177e4 LT |
4771 | } else { /* decode response */ |
4772 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4773 | ||
820a803f JL |
4774 | if (rc || get_bcc(&pSMBr->hdr) < |
4775 | sizeof(FILE_SYSTEM_DEVICE_INFO)) | |
1da177e4 LT |
4776 | rc = -EIO; /* bad smb */ |
4777 | else { | |
4778 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4779 | response_data = | |
737b758c SF |
4780 | (FILE_SYSTEM_DEVICE_INFO *) |
4781 | (((char *) &pSMBr->hdr.Protocol) + | |
1da177e4 LT |
4782 | data_offset); |
4783 | memcpy(&tcon->fsDevInfo, response_data, | |
26f57364 | 4784 | sizeof(FILE_SYSTEM_DEVICE_INFO)); |
1da177e4 LT |
4785 | } |
4786 | } | |
4787 | cifs_buf_release(pSMB); | |
4788 | ||
4789 | if (rc == -EAGAIN) | |
4790 | goto QFSDeviceRetry; | |
4791 | ||
4792 | return rc; | |
4793 | } | |
4794 | ||
4795 | int | |
6d5786a3 | 4796 | CIFSSMBQFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon) |
1da177e4 LT |
4797 | { |
4798 | /* level 0x200 SMB_QUERY_CIFS_UNIX_INFO */ | |
4799 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4800 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4801 | FILE_SYSTEM_UNIX_INFO *response_data; | |
4802 | int rc = 0; | |
4803 | int bytes_returned = 0; | |
4804 | __u16 params, byte_count; | |
4805 | ||
f96637be | 4806 | cifs_dbg(FYI, "In QFSUnixInfo\n"); |
1da177e4 | 4807 | QFSUnixRetry: |
f569599a JL |
4808 | rc = smb_init_no_reconnect(SMB_COM_TRANSACTION2, 15, tcon, |
4809 | (void **) &pSMB, (void **) &pSMBr); | |
1da177e4 LT |
4810 | if (rc) |
4811 | return rc; | |
4812 | ||
4813 | params = 2; /* level */ | |
4814 | pSMB->TotalDataCount = 0; | |
4815 | pSMB->DataCount = 0; | |
4816 | pSMB->DataOffset = 0; | |
4817 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
4818 | /* BB find exact max SMB PDU from sess structure BB */ |
4819 | pSMB->MaxDataCount = cpu_to_le16(100); | |
1da177e4 LT |
4820 | pSMB->MaxSetupCount = 0; |
4821 | pSMB->Reserved = 0; | |
4822 | pSMB->Flags = 0; | |
4823 | pSMB->Timeout = 0; | |
4824 | pSMB->Reserved2 = 0; | |
4825 | byte_count = params + 1 /* pad */ ; | |
4826 | pSMB->ParameterCount = cpu_to_le16(params); | |
4827 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
50c2f753 SF |
4828 | pSMB->ParameterOffset = cpu_to_le16(offsetof(struct |
4829 | smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
1da177e4 LT |
4830 | pSMB->SetupCount = 1; |
4831 | pSMB->Reserved3 = 0; | |
4832 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4833 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_CIFS_UNIX_INFO); | |
be8e3b00 | 4834 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4835 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4836 | ||
4837 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4838 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4839 | if (rc) { | |
f96637be | 4840 | cifs_dbg(VFS, "Send error in QFSUnixInfo = %d\n", rc); |
1da177e4 LT |
4841 | } else { /* decode response */ |
4842 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4843 | ||
820a803f | 4844 | if (rc || get_bcc(&pSMBr->hdr) < 13) { |
1da177e4 LT |
4845 | rc = -EIO; /* bad smb */ |
4846 | } else { | |
4847 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4848 | response_data = | |
4849 | (FILE_SYSTEM_UNIX_INFO | |
4850 | *) (((char *) &pSMBr->hdr.Protocol) + | |
4851 | data_offset); | |
4852 | memcpy(&tcon->fsUnixInfo, response_data, | |
26f57364 | 4853 | sizeof(FILE_SYSTEM_UNIX_INFO)); |
1da177e4 LT |
4854 | } |
4855 | } | |
4856 | cifs_buf_release(pSMB); | |
4857 | ||
4858 | if (rc == -EAGAIN) | |
4859 | goto QFSUnixRetry; | |
4860 | ||
4861 | ||
4862 | return rc; | |
4863 | } | |
4864 | ||
ac67055e | 4865 | int |
6d5786a3 | 4866 | CIFSSMBSetFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon, __u64 cap) |
ac67055e JA |
4867 | { |
4868 | /* level 0x200 SMB_SET_CIFS_UNIX_INFO */ | |
4869 | TRANSACTION2_SETFSI_REQ *pSMB = NULL; | |
4870 | TRANSACTION2_SETFSI_RSP *pSMBr = NULL; | |
4871 | int rc = 0; | |
4872 | int bytes_returned = 0; | |
4873 | __u16 params, param_offset, offset, byte_count; | |
4874 | ||
f96637be | 4875 | cifs_dbg(FYI, "In SETFSUnixInfo\n"); |
ac67055e | 4876 | SETFSUnixRetry: |
f26282c9 | 4877 | /* BB switch to small buf init to save memory */ |
f569599a JL |
4878 | rc = smb_init_no_reconnect(SMB_COM_TRANSACTION2, 15, tcon, |
4879 | (void **) &pSMB, (void **) &pSMBr); | |
ac67055e JA |
4880 | if (rc) |
4881 | return rc; | |
4882 | ||
4883 | params = 4; /* 2 bytes zero followed by info level. */ | |
4884 | pSMB->MaxSetupCount = 0; | |
4885 | pSMB->Reserved = 0; | |
4886 | pSMB->Flags = 0; | |
4887 | pSMB->Timeout = 0; | |
4888 | pSMB->Reserved2 = 0; | |
50c2f753 SF |
4889 | param_offset = offsetof(struct smb_com_transaction2_setfsi_req, FileNum) |
4890 | - 4; | |
ac67055e JA |
4891 | offset = param_offset + params; |
4892 | ||
4893 | pSMB->MaxParameterCount = cpu_to_le16(4); | |
582d21e5 SF |
4894 | /* BB find exact max SMB PDU from sess structure BB */ |
4895 | pSMB->MaxDataCount = cpu_to_le16(100); | |
ac67055e JA |
4896 | pSMB->SetupCount = 1; |
4897 | pSMB->Reserved3 = 0; | |
4898 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FS_INFORMATION); | |
4899 | byte_count = 1 /* pad */ + params + 12; | |
4900 | ||
4901 | pSMB->DataCount = cpu_to_le16(12); | |
4902 | pSMB->ParameterCount = cpu_to_le16(params); | |
4903 | pSMB->TotalDataCount = pSMB->DataCount; | |
4904 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
4905 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
4906 | pSMB->DataOffset = cpu_to_le16(offset); | |
4907 | ||
4908 | /* Params. */ | |
4909 | pSMB->FileNum = 0; | |
4910 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_CIFS_UNIX_INFO); | |
4911 | ||
4912 | /* Data. */ | |
4913 | pSMB->ClientUnixMajor = cpu_to_le16(CIFS_UNIX_MAJOR_VERSION); | |
4914 | pSMB->ClientUnixMinor = cpu_to_le16(CIFS_UNIX_MINOR_VERSION); | |
4915 | pSMB->ClientUnixCap = cpu_to_le64(cap); | |
4916 | ||
be8e3b00 | 4917 | inc_rfc1001_len(pSMB, byte_count); |
ac67055e JA |
4918 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4919 | ||
4920 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4921 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4922 | if (rc) { | |
f96637be | 4923 | cifs_dbg(VFS, "Send error in SETFSUnixInfo = %d\n", rc); |
ac67055e JA |
4924 | } else { /* decode response */ |
4925 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
ad7a2926 | 4926 | if (rc) |
ac67055e | 4927 | rc = -EIO; /* bad smb */ |
ac67055e JA |
4928 | } |
4929 | cifs_buf_release(pSMB); | |
4930 | ||
4931 | if (rc == -EAGAIN) | |
4932 | goto SETFSUnixRetry; | |
4933 | ||
4934 | return rc; | |
4935 | } | |
4936 | ||
4937 | ||
1da177e4 LT |
4938 | |
4939 | int | |
6d5786a3 | 4940 | CIFSSMBQFSPosixInfo(const unsigned int xid, struct cifs_tcon *tcon, |
737b758c | 4941 | struct kstatfs *FSData) |
1da177e4 LT |
4942 | { |
4943 | /* level 0x201 SMB_QUERY_CIFS_POSIX_INFO */ | |
4944 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4945 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4946 | FILE_SYSTEM_POSIX_INFO *response_data; | |
4947 | int rc = 0; | |
4948 | int bytes_returned = 0; | |
4949 | __u16 params, byte_count; | |
4950 | ||
f96637be | 4951 | cifs_dbg(FYI, "In QFSPosixInfo\n"); |
1da177e4 LT |
4952 | QFSPosixRetry: |
4953 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4954 | (void **) &pSMBr); | |
4955 | if (rc) | |
4956 | return rc; | |
4957 | ||
4958 | params = 2; /* level */ | |
4959 | pSMB->TotalDataCount = 0; | |
4960 | pSMB->DataCount = 0; | |
4961 | pSMB->DataOffset = 0; | |
4962 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
4963 | /* BB find exact max SMB PDU from sess structure BB */ |
4964 | pSMB->MaxDataCount = cpu_to_le16(100); | |
1da177e4 LT |
4965 | pSMB->MaxSetupCount = 0; |
4966 | pSMB->Reserved = 0; | |
4967 | pSMB->Flags = 0; | |
4968 | pSMB->Timeout = 0; | |
4969 | pSMB->Reserved2 = 0; | |
4970 | byte_count = params + 1 /* pad */ ; | |
4971 | pSMB->ParameterCount = cpu_to_le16(params); | |
4972 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
50c2f753 SF |
4973 | pSMB->ParameterOffset = cpu_to_le16(offsetof(struct |
4974 | smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
1da177e4 LT |
4975 | pSMB->SetupCount = 1; |
4976 | pSMB->Reserved3 = 0; | |
4977 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4978 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_POSIX_FS_INFO); | |
be8e3b00 | 4979 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
4980 | pSMB->ByteCount = cpu_to_le16(byte_count); |
4981 | ||
4982 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4983 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4984 | if (rc) { | |
f96637be | 4985 | cifs_dbg(FYI, "Send error in QFSUnixInfo = %d\n", rc); |
1da177e4 LT |
4986 | } else { /* decode response */ |
4987 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4988 | ||
820a803f | 4989 | if (rc || get_bcc(&pSMBr->hdr) < 13) { |
1da177e4 LT |
4990 | rc = -EIO; /* bad smb */ |
4991 | } else { | |
4992 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4993 | response_data = | |
4994 | (FILE_SYSTEM_POSIX_INFO | |
4995 | *) (((char *) &pSMBr->hdr.Protocol) + | |
4996 | data_offset); | |
4997 | FSData->f_bsize = | |
4998 | le32_to_cpu(response_data->BlockSize); | |
5a519bea SF |
4999 | /* |
5000 | * much prefer larger but if server doesn't report | |
5001 | * a valid size than 4K is a reasonable minimum | |
5002 | */ | |
5003 | if (FSData->f_bsize < 512) | |
5004 | FSData->f_bsize = 4096; | |
5005 | ||
1da177e4 LT |
5006 | FSData->f_blocks = |
5007 | le64_to_cpu(response_data->TotalBlocks); | |
5008 | FSData->f_bfree = | |
5009 | le64_to_cpu(response_data->BlocksAvail); | |
790fe579 | 5010 | if (response_data->UserBlocksAvail == cpu_to_le64(-1)) { |
1da177e4 LT |
5011 | FSData->f_bavail = FSData->f_bfree; |
5012 | } else { | |
5013 | FSData->f_bavail = | |
50c2f753 | 5014 | le64_to_cpu(response_data->UserBlocksAvail); |
1da177e4 | 5015 | } |
790fe579 | 5016 | if (response_data->TotalFileNodes != cpu_to_le64(-1)) |
1da177e4 | 5017 | FSData->f_files = |
50c2f753 | 5018 | le64_to_cpu(response_data->TotalFileNodes); |
790fe579 | 5019 | if (response_data->FreeFileNodes != cpu_to_le64(-1)) |
1da177e4 | 5020 | FSData->f_ffree = |
50c2f753 | 5021 | le64_to_cpu(response_data->FreeFileNodes); |
1da177e4 LT |
5022 | } |
5023 | } | |
5024 | cifs_buf_release(pSMB); | |
5025 | ||
5026 | if (rc == -EAGAIN) | |
5027 | goto QFSPosixRetry; | |
5028 | ||
5029 | return rc; | |
5030 | } | |
5031 | ||
5032 | ||
d1433418 PS |
5033 | /* |
5034 | * We can not use write of zero bytes trick to set file size due to need for | |
5035 | * large file support. Also note that this SetPathInfo is preferred to | |
5036 | * SetFileInfo based method in next routine which is only needed to work around | |
5037 | * a sharing violation bugin Samba which this routine can run into. | |
5038 | */ | |
1da177e4 | 5039 | int |
6d5786a3 | 5040 | CIFSSMBSetEOF(const unsigned int xid, struct cifs_tcon *tcon, |
d1433418 PS |
5041 | const char *file_name, __u64 size, struct cifs_sb_info *cifs_sb, |
5042 | bool set_allocation) | |
1da177e4 LT |
5043 | { |
5044 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
5045 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
5046 | struct file_end_of_file_info *parm_data; | |
5047 | int name_len; | |
5048 | int rc = 0; | |
5049 | int bytes_returned = 0; | |
2baa2682 | 5050 | int remap = cifs_remap(cifs_sb); |
d1433418 | 5051 | |
1da177e4 LT |
5052 | __u16 params, byte_count, data_count, param_offset, offset; |
5053 | ||
f96637be | 5054 | cifs_dbg(FYI, "In SetEOF\n"); |
1da177e4 LT |
5055 | SetEOFRetry: |
5056 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5057 | (void **) &pSMBr); | |
5058 | if (rc) | |
5059 | return rc; | |
5060 | ||
5061 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5062 | name_len = | |
d1433418 PS |
5063 | cifsConvertToUTF16((__le16 *) pSMB->FileName, file_name, |
5064 | PATH_MAX, cifs_sb->local_nls, remap); | |
1da177e4 LT |
5065 | name_len++; /* trailing null */ |
5066 | name_len *= 2; | |
340625e6 RS |
5067 | } else { |
5068 | name_len = copy_path_name(pSMB->FileName, file_name); | |
1da177e4 LT |
5069 | } |
5070 | params = 6 + name_len; | |
26f57364 | 5071 | data_count = sizeof(struct file_end_of_file_info); |
1da177e4 | 5072 | pSMB->MaxParameterCount = cpu_to_le16(2); |
3e87d803 | 5073 | pSMB->MaxDataCount = cpu_to_le16(4100); |
1da177e4 LT |
5074 | pSMB->MaxSetupCount = 0; |
5075 | pSMB->Reserved = 0; | |
5076 | pSMB->Flags = 0; | |
5077 | pSMB->Timeout = 0; | |
5078 | pSMB->Reserved2 = 0; | |
5079 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 5080 | InformationLevel) - 4; |
1da177e4 | 5081 | offset = param_offset + params; |
d1433418 | 5082 | if (set_allocation) { |
50c2f753 SF |
5083 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
5084 | pSMB->InformationLevel = | |
5085 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO2); | |
5086 | else | |
5087 | pSMB->InformationLevel = | |
5088 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO); | |
5089 | } else /* Set File Size */ { | |
1da177e4 LT |
5090 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
5091 | pSMB->InformationLevel = | |
50c2f753 | 5092 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO2); |
1da177e4 LT |
5093 | else |
5094 | pSMB->InformationLevel = | |
50c2f753 | 5095 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO); |
1da177e4 LT |
5096 | } |
5097 | ||
5098 | parm_data = | |
5099 | (struct file_end_of_file_info *) (((char *) &pSMB->hdr.Protocol) + | |
5100 | offset); | |
5101 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5102 | pSMB->DataOffset = cpu_to_le16(offset); | |
5103 | pSMB->SetupCount = 1; | |
5104 | pSMB->Reserved3 = 0; | |
5105 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
5106 | byte_count = 3 /* pad */ + params + data_count; | |
5107 | pSMB->DataCount = cpu_to_le16(data_count); | |
5108 | pSMB->TotalDataCount = pSMB->DataCount; | |
5109 | pSMB->ParameterCount = cpu_to_le16(params); | |
5110 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5111 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5112 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5113 | parm_data->FileSize = cpu_to_le64(size); |
5114 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
5115 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5116 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5117 | if (rc) |
f96637be | 5118 | cifs_dbg(FYI, "SetPathInfo (file size) returned %d\n", rc); |
1da177e4 LT |
5119 | |
5120 | cifs_buf_release(pSMB); | |
5121 | ||
5122 | if (rc == -EAGAIN) | |
5123 | goto SetEOFRetry; | |
5124 | ||
5125 | return rc; | |
5126 | } | |
5127 | ||
5128 | int | |
d1433418 PS |
5129 | CIFSSMBSetFileSize(const unsigned int xid, struct cifs_tcon *tcon, |
5130 | struct cifsFileInfo *cfile, __u64 size, bool set_allocation) | |
1da177e4 LT |
5131 | { |
5132 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
1da177e4 LT |
5133 | struct file_end_of_file_info *parm_data; |
5134 | int rc = 0; | |
1da177e4 LT |
5135 | __u16 params, param_offset, offset, byte_count, count; |
5136 | ||
f96637be JP |
5137 | cifs_dbg(FYI, "SetFileSize (via SetFileInfo) %lld\n", |
5138 | (long long)size); | |
cd63499c SF |
5139 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
5140 | ||
1da177e4 LT |
5141 | if (rc) |
5142 | return rc; | |
5143 | ||
d1433418 PS |
5144 | pSMB->hdr.Pid = cpu_to_le16((__u16)cfile->pid); |
5145 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(cfile->pid >> 16)); | |
50c2f753 | 5146 | |
1da177e4 LT |
5147 | params = 6; |
5148 | pSMB->MaxSetupCount = 0; | |
5149 | pSMB->Reserved = 0; | |
5150 | pSMB->Flags = 0; | |
5151 | pSMB->Timeout = 0; | |
5152 | pSMB->Reserved2 = 0; | |
5153 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
5154 | offset = param_offset + params; | |
5155 | ||
1da177e4 LT |
5156 | count = sizeof(struct file_end_of_file_info); |
5157 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 SF |
5158 | /* BB find exact max SMB PDU from sess structure BB */ |
5159 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5160 | pSMB->SetupCount = 1; |
5161 | pSMB->Reserved3 = 0; | |
5162 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
5163 | byte_count = 3 /* pad */ + params + count; | |
5164 | pSMB->DataCount = cpu_to_le16(count); | |
5165 | pSMB->ParameterCount = cpu_to_le16(params); | |
5166 | pSMB->TotalDataCount = pSMB->DataCount; | |
5167 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5168 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
e3973ea3 | 5169 | /* SMB offsets are from the beginning of SMB which is 4 bytes in, after RFC1001 field */ |
1da177e4 | 5170 | parm_data = |
e3973ea3 | 5171 | (struct file_end_of_file_info *)(((char *)pSMB) + offset + 4); |
1da177e4 LT |
5172 | pSMB->DataOffset = cpu_to_le16(offset); |
5173 | parm_data->FileSize = cpu_to_le64(size); | |
d1433418 PS |
5174 | pSMB->Fid = cfile->fid.netfid; |
5175 | if (set_allocation) { | |
1da177e4 LT |
5176 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
5177 | pSMB->InformationLevel = | |
5178 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO2); | |
5179 | else | |
5180 | pSMB->InformationLevel = | |
5181 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO); | |
50c2f753 | 5182 | } else /* Set File Size */ { |
1da177e4 LT |
5183 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) |
5184 | pSMB->InformationLevel = | |
50c2f753 | 5185 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO2); |
1da177e4 LT |
5186 | else |
5187 | pSMB->InformationLevel = | |
50c2f753 | 5188 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO); |
1da177e4 LT |
5189 | } |
5190 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5191 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 | 5192 | pSMB->ByteCount = cpu_to_le16(byte_count); |
792af7b0 | 5193 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
da502f7d | 5194 | cifs_small_buf_release(pSMB); |
1da177e4 | 5195 | if (rc) { |
f96637be JP |
5196 | cifs_dbg(FYI, "Send error in SetFileInfo (SetFileSize) = %d\n", |
5197 | rc); | |
1da177e4 LT |
5198 | } |
5199 | ||
50c2f753 | 5200 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
5201 | since file handle passed in no longer valid */ |
5202 | ||
5203 | return rc; | |
5204 | } | |
5205 | ||
50c2f753 | 5206 | /* Some legacy servers such as NT4 require that the file times be set on |
1da177e4 LT |
5207 | an open handle, rather than by pathname - this is awkward due to |
5208 | potential access conflicts on the open, but it is unavoidable for these | |
5209 | old servers since the only other choice is to go from 100 nanosecond DCE | |
5210 | time and resort to the original setpathinfo level which takes the ancient | |
5211 | DOS time format with 2 second granularity */ | |
5212 | int | |
6d5786a3 | 5213 | CIFSSMBSetFileInfo(const unsigned int xid, struct cifs_tcon *tcon, |
2dd2dfa0 | 5214 | const FILE_BASIC_INFO *data, __u16 fid, __u32 pid_of_opener) |
1da177e4 LT |
5215 | { |
5216 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
1da177e4 LT |
5217 | char *data_offset; |
5218 | int rc = 0; | |
1da177e4 LT |
5219 | __u16 params, param_offset, offset, byte_count, count; |
5220 | ||
f96637be | 5221 | cifs_dbg(FYI, "Set Times (via SetFileInfo)\n"); |
cd63499c SF |
5222 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
5223 | ||
1da177e4 LT |
5224 | if (rc) |
5225 | return rc; | |
5226 | ||
2dd2dfa0 JL |
5227 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); |
5228 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
50c2f753 | 5229 | |
1da177e4 LT |
5230 | params = 6; |
5231 | pSMB->MaxSetupCount = 0; | |
5232 | pSMB->Reserved = 0; | |
5233 | pSMB->Flags = 0; | |
5234 | pSMB->Timeout = 0; | |
5235 | pSMB->Reserved2 = 0; | |
5236 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
5237 | offset = param_offset + params; | |
5238 | ||
b2a3ad9c JL |
5239 | data_offset = (char *)pSMB + |
5240 | offsetof(struct smb_hdr, Protocol) + offset; | |
1da177e4 | 5241 | |
26f57364 | 5242 | count = sizeof(FILE_BASIC_INFO); |
1da177e4 | 5243 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
5244 | /* BB find max SMB PDU from sess */ |
5245 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5246 | pSMB->SetupCount = 1; |
5247 | pSMB->Reserved3 = 0; | |
5248 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
5249 | byte_count = 3 /* pad */ + params + count; | |
5250 | pSMB->DataCount = cpu_to_le16(count); | |
5251 | pSMB->ParameterCount = cpu_to_le16(params); | |
5252 | pSMB->TotalDataCount = pSMB->DataCount; | |
5253 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5254 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5255 | pSMB->DataOffset = cpu_to_le16(offset); | |
5256 | pSMB->Fid = fid; | |
5257 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) | |
5258 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO2); | |
5259 | else | |
5260 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO); | |
5261 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5262 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 | 5263 | pSMB->ByteCount = cpu_to_le16(byte_count); |
50c2f753 | 5264 | memcpy(data_offset, data, sizeof(FILE_BASIC_INFO)); |
792af7b0 | 5265 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
da502f7d | 5266 | cifs_small_buf_release(pSMB); |
ad7a2926 | 5267 | if (rc) |
f96637be JP |
5268 | cifs_dbg(FYI, "Send error in Set Time (SetFileInfo) = %d\n", |
5269 | rc); | |
1da177e4 | 5270 | |
50c2f753 | 5271 | /* Note: On -EAGAIN error only caller can retry on handle based calls |
1da177e4 LT |
5272 | since file handle passed in no longer valid */ |
5273 | ||
5274 | return rc; | |
5275 | } | |
5276 | ||
6d22f098 | 5277 | int |
6d5786a3 | 5278 | CIFSSMBSetFileDisposition(const unsigned int xid, struct cifs_tcon *tcon, |
6d22f098 JL |
5279 | bool delete_file, __u16 fid, __u32 pid_of_opener) |
5280 | { | |
5281 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
5282 | char *data_offset; | |
5283 | int rc = 0; | |
5284 | __u16 params, param_offset, offset, byte_count, count; | |
5285 | ||
f96637be | 5286 | cifs_dbg(FYI, "Set File Disposition (via SetFileInfo)\n"); |
6d22f098 JL |
5287 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
5288 | ||
5289 | if (rc) | |
5290 | return rc; | |
5291 | ||
5292 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); | |
5293 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
5294 | ||
5295 | params = 6; | |
5296 | pSMB->MaxSetupCount = 0; | |
5297 | pSMB->Reserved = 0; | |
5298 | pSMB->Flags = 0; | |
5299 | pSMB->Timeout = 0; | |
5300 | pSMB->Reserved2 = 0; | |
5301 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
5302 | offset = param_offset + params; | |
5303 | ||
2a780e8b SF |
5304 | /* SMB offsets are from the beginning of SMB which is 4 bytes in, after RFC1001 field */ |
5305 | data_offset = (char *)(pSMB) + offset + 4; | |
6d22f098 JL |
5306 | |
5307 | count = 1; | |
5308 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
5309 | /* BB find max SMB PDU from sess */ | |
5310 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
5311 | pSMB->SetupCount = 1; | |
5312 | pSMB->Reserved3 = 0; | |
5313 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
5314 | byte_count = 3 /* pad */ + params + count; | |
5315 | pSMB->DataCount = cpu_to_le16(count); | |
5316 | pSMB->ParameterCount = cpu_to_le16(params); | |
5317 | pSMB->TotalDataCount = pSMB->DataCount; | |
5318 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5319 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5320 | pSMB->DataOffset = cpu_to_le16(offset); | |
5321 | pSMB->Fid = fid; | |
5322 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_DISPOSITION_INFO); | |
5323 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5324 | inc_rfc1001_len(pSMB, byte_count); |
6d22f098 JL |
5325 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5326 | *data_offset = delete_file ? 1 : 0; | |
792af7b0 | 5327 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
da502f7d | 5328 | cifs_small_buf_release(pSMB); |
6d22f098 | 5329 | if (rc) |
f96637be | 5330 | cifs_dbg(FYI, "Send error in SetFileDisposition = %d\n", rc); |
6d22f098 JL |
5331 | |
5332 | return rc; | |
5333 | } | |
1da177e4 | 5334 | |
8e408fc9 RS |
5335 | static int |
5336 | CIFSSMBSetPathInfoFB(const unsigned int xid, struct cifs_tcon *tcon, | |
5337 | const char *fileName, const FILE_BASIC_INFO *data, | |
5338 | const struct nls_table *nls_codepage, | |
5339 | struct cifs_sb_info *cifs_sb) | |
5340 | { | |
5341 | int oplock = 0; | |
5342 | struct cifs_open_parms oparms; | |
5343 | struct cifs_fid fid; | |
5344 | int rc; | |
5345 | ||
de036dca VL |
5346 | oparms = (struct cifs_open_parms) { |
5347 | .tcon = tcon, | |
5348 | .cifs_sb = cifs_sb, | |
5349 | .desired_access = GENERIC_WRITE, | |
5350 | .create_options = cifs_create_options(cifs_sb, 0), | |
5351 | .disposition = FILE_OPEN, | |
5352 | .path = fileName, | |
5353 | .fid = &fid, | |
5354 | }; | |
8e408fc9 RS |
5355 | |
5356 | rc = CIFS_open(xid, &oparms, &oplock, NULL); | |
5357 | if (rc) | |
5358 | goto out; | |
5359 | ||
5360 | rc = CIFSSMBSetFileInfo(xid, tcon, data, fid.netfid, current->tgid); | |
5361 | CIFSSMBClose(xid, tcon, fid.netfid); | |
5362 | out: | |
5363 | ||
5364 | return rc; | |
5365 | } | |
5366 | ||
1da177e4 | 5367 | int |
6d5786a3 | 5368 | CIFSSMBSetPathInfo(const unsigned int xid, struct cifs_tcon *tcon, |
6fc000e5 | 5369 | const char *fileName, const FILE_BASIC_INFO *data, |
8e408fc9 RS |
5370 | const struct nls_table *nls_codepage, |
5371 | struct cifs_sb_info *cifs_sb) | |
1da177e4 LT |
5372 | { |
5373 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
5374 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
5375 | int name_len; | |
5376 | int rc = 0; | |
5377 | int bytes_returned = 0; | |
5378 | char *data_offset; | |
5379 | __u16 params, param_offset, offset, byte_count, count; | |
8e408fc9 | 5380 | int remap = cifs_remap(cifs_sb); |
1da177e4 | 5381 | |
f96637be | 5382 | cifs_dbg(FYI, "In SetTimes\n"); |
1da177e4 LT |
5383 | |
5384 | SetTimesRetry: | |
5385 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5386 | (void **) &pSMBr); | |
5387 | if (rc) | |
5388 | return rc; | |
5389 | ||
5390 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5391 | name_len = | |
acbbb76a SF |
5392 | cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName, |
5393 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
5394 | name_len++; /* trailing null */ |
5395 | name_len *= 2; | |
340625e6 RS |
5396 | } else { |
5397 | name_len = copy_path_name(pSMB->FileName, fileName); | |
1da177e4 LT |
5398 | } |
5399 | ||
5400 | params = 6 + name_len; | |
26f57364 | 5401 | count = sizeof(FILE_BASIC_INFO); |
1da177e4 | 5402 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
5403 | /* BB find max SMB PDU from sess structure BB */ |
5404 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5405 | pSMB->MaxSetupCount = 0; |
5406 | pSMB->Reserved = 0; | |
5407 | pSMB->Flags = 0; | |
5408 | pSMB->Timeout = 0; | |
5409 | pSMB->Reserved2 = 0; | |
5410 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 5411 | InformationLevel) - 4; |
1da177e4 LT |
5412 | offset = param_offset + params; |
5413 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
5414 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5415 | pSMB->DataOffset = cpu_to_le16(offset); | |
5416 | pSMB->SetupCount = 1; | |
5417 | pSMB->Reserved3 = 0; | |
5418 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
5419 | byte_count = 3 /* pad */ + params + count; | |
5420 | ||
5421 | pSMB->DataCount = cpu_to_le16(count); | |
5422 | pSMB->ParameterCount = cpu_to_le16(params); | |
5423 | pSMB->TotalDataCount = pSMB->DataCount; | |
5424 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5425 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) | |
5426 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO2); | |
5427 | else | |
5428 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO); | |
5429 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5430 | inc_rfc1001_len(pSMB, byte_count); |
26f57364 | 5431 | memcpy(data_offset, data, sizeof(FILE_BASIC_INFO)); |
1da177e4 LT |
5432 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5433 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5434 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5435 | if (rc) |
f96637be | 5436 | cifs_dbg(FYI, "SetPathInfo (times) returned %d\n", rc); |
1da177e4 LT |
5437 | |
5438 | cifs_buf_release(pSMB); | |
5439 | ||
5440 | if (rc == -EAGAIN) | |
5441 | goto SetTimesRetry; | |
5442 | ||
8e408fc9 RS |
5443 | if (rc == -EOPNOTSUPP) |
5444 | return CIFSSMBSetPathInfoFB(xid, tcon, fileName, data, | |
5445 | nls_codepage, cifs_sb); | |
5446 | ||
1da177e4 LT |
5447 | return rc; |
5448 | } | |
5449 | ||
654cf14a JL |
5450 | static void |
5451 | cifs_fill_unix_set_info(FILE_UNIX_BASIC_INFO *data_offset, | |
5452 | const struct cifs_unix_set_info_args *args) | |
5453 | { | |
49418b2c | 5454 | u64 uid = NO_CHANGE_64, gid = NO_CHANGE_64; |
654cf14a JL |
5455 | u64 mode = args->mode; |
5456 | ||
49418b2c EB |
5457 | if (uid_valid(args->uid)) |
5458 | uid = from_kuid(&init_user_ns, args->uid); | |
5459 | if (gid_valid(args->gid)) | |
5460 | gid = from_kgid(&init_user_ns, args->gid); | |
5461 | ||
654cf14a JL |
5462 | /* |
5463 | * Samba server ignores set of file size to zero due to bugs in some | |
5464 | * older clients, but we should be precise - we use SetFileSize to | |
5465 | * set file size and do not want to truncate file size to zero | |
25985edc | 5466 | * accidentally as happened on one Samba server beta by putting |
654cf14a JL |
5467 | * zero instead of -1 here |
5468 | */ | |
5469 | data_offset->EndOfFile = cpu_to_le64(NO_CHANGE_64); | |
5470 | data_offset->NumOfBytes = cpu_to_le64(NO_CHANGE_64); | |
5471 | data_offset->LastStatusChange = cpu_to_le64(args->ctime); | |
5472 | data_offset->LastAccessTime = cpu_to_le64(args->atime); | |
5473 | data_offset->LastModificationTime = cpu_to_le64(args->mtime); | |
49418b2c EB |
5474 | data_offset->Uid = cpu_to_le64(uid); |
5475 | data_offset->Gid = cpu_to_le64(gid); | |
654cf14a JL |
5476 | /* better to leave device as zero when it is */ |
5477 | data_offset->DevMajor = cpu_to_le64(MAJOR(args->device)); | |
5478 | data_offset->DevMinor = cpu_to_le64(MINOR(args->device)); | |
5479 | data_offset->Permissions = cpu_to_le64(mode); | |
5480 | ||
5481 | if (S_ISREG(mode)) | |
5482 | data_offset->Type = cpu_to_le32(UNIX_FILE); | |
5483 | else if (S_ISDIR(mode)) | |
5484 | data_offset->Type = cpu_to_le32(UNIX_DIR); | |
5485 | else if (S_ISLNK(mode)) | |
5486 | data_offset->Type = cpu_to_le32(UNIX_SYMLINK); | |
5487 | else if (S_ISCHR(mode)) | |
5488 | data_offset->Type = cpu_to_le32(UNIX_CHARDEV); | |
5489 | else if (S_ISBLK(mode)) | |
5490 | data_offset->Type = cpu_to_le32(UNIX_BLOCKDEV); | |
5491 | else if (S_ISFIFO(mode)) | |
5492 | data_offset->Type = cpu_to_le32(UNIX_FIFO); | |
5493 | else if (S_ISSOCK(mode)) | |
5494 | data_offset->Type = cpu_to_le32(UNIX_SOCKET); | |
5495 | } | |
5496 | ||
3bbeeb3c | 5497 | int |
6d5786a3 | 5498 | CIFSSMBUnixSetFileInfo(const unsigned int xid, struct cifs_tcon *tcon, |
3bbeeb3c JL |
5499 | const struct cifs_unix_set_info_args *args, |
5500 | u16 fid, u32 pid_of_opener) | |
5501 | { | |
5502 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
b2a3ad9c | 5503 | char *data_offset; |
3bbeeb3c JL |
5504 | int rc = 0; |
5505 | u16 params, param_offset, offset, byte_count, count; | |
5506 | ||
f96637be | 5507 | cifs_dbg(FYI, "Set Unix Info (via SetFileInfo)\n"); |
3bbeeb3c JL |
5508 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); |
5509 | ||
5510 | if (rc) | |
5511 | return rc; | |
5512 | ||
5513 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); | |
5514 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
5515 | ||
5516 | params = 6; | |
5517 | pSMB->MaxSetupCount = 0; | |
5518 | pSMB->Reserved = 0; | |
5519 | pSMB->Flags = 0; | |
5520 | pSMB->Timeout = 0; | |
5521 | pSMB->Reserved2 = 0; | |
5522 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
5523 | offset = param_offset + params; | |
5524 | ||
b2a3ad9c JL |
5525 | data_offset = (char *)pSMB + |
5526 | offsetof(struct smb_hdr, Protocol) + offset; | |
5527 | ||
3bbeeb3c JL |
5528 | count = sizeof(FILE_UNIX_BASIC_INFO); |
5529 | ||
5530 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
5531 | /* BB find max SMB PDU from sess */ | |
5532 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
5533 | pSMB->SetupCount = 1; | |
5534 | pSMB->Reserved3 = 0; | |
5535 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
5536 | byte_count = 3 /* pad */ + params + count; | |
5537 | pSMB->DataCount = cpu_to_le16(count); | |
5538 | pSMB->ParameterCount = cpu_to_le16(params); | |
5539 | pSMB->TotalDataCount = pSMB->DataCount; | |
5540 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5541 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5542 | pSMB->DataOffset = cpu_to_le16(offset); | |
5543 | pSMB->Fid = fid; | |
5544 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_BASIC); | |
5545 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5546 | inc_rfc1001_len(pSMB, byte_count); |
3bbeeb3c JL |
5547 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5548 | ||
b2a3ad9c | 5549 | cifs_fill_unix_set_info((FILE_UNIX_BASIC_INFO *)data_offset, args); |
3bbeeb3c | 5550 | |
792af7b0 | 5551 | rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0); |
da502f7d | 5552 | cifs_small_buf_release(pSMB); |
3bbeeb3c | 5553 | if (rc) |
f96637be JP |
5554 | cifs_dbg(FYI, "Send error in Set Time (SetFileInfo) = %d\n", |
5555 | rc); | |
3bbeeb3c JL |
5556 | |
5557 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
5558 | since file handle passed in no longer valid */ | |
5559 | ||
5560 | return rc; | |
5561 | } | |
5562 | ||
1da177e4 | 5563 | int |
6d5786a3 | 5564 | CIFSSMBUnixSetPathInfo(const unsigned int xid, struct cifs_tcon *tcon, |
ff691e96 | 5565 | const char *file_name, |
01ea95e3 JL |
5566 | const struct cifs_unix_set_info_args *args, |
5567 | const struct nls_table *nls_codepage, int remap) | |
1da177e4 LT |
5568 | { |
5569 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
5570 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
5571 | int name_len; | |
5572 | int rc = 0; | |
5573 | int bytes_returned = 0; | |
5574 | FILE_UNIX_BASIC_INFO *data_offset; | |
5575 | __u16 params, param_offset, offset, count, byte_count; | |
5576 | ||
f96637be | 5577 | cifs_dbg(FYI, "In SetUID/GID/Mode\n"); |
1da177e4 LT |
5578 | setPermsRetry: |
5579 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5580 | (void **) &pSMBr); | |
5581 | if (rc) | |
5582 | return rc; | |
5583 | ||
5584 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5585 | name_len = | |
ff691e96 | 5586 | cifsConvertToUTF16((__le16 *) pSMB->FileName, file_name, |
acbbb76a | 5587 | PATH_MAX, nls_codepage, remap); |
1da177e4 LT |
5588 | name_len++; /* trailing null */ |
5589 | name_len *= 2; | |
340625e6 RS |
5590 | } else { |
5591 | name_len = copy_path_name(pSMB->FileName, file_name); | |
1da177e4 LT |
5592 | } |
5593 | ||
5594 | params = 6 + name_len; | |
26f57364 | 5595 | count = sizeof(FILE_UNIX_BASIC_INFO); |
1da177e4 | 5596 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
5597 | /* BB find max SMB PDU from sess structure BB */ |
5598 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5599 | pSMB->MaxSetupCount = 0; |
5600 | pSMB->Reserved = 0; | |
5601 | pSMB->Flags = 0; | |
5602 | pSMB->Timeout = 0; | |
5603 | pSMB->Reserved2 = 0; | |
5604 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 5605 | InformationLevel) - 4; |
1da177e4 | 5606 | offset = param_offset + params; |
b019e118 SF |
5607 | /* SMB offsets are from the beginning of SMB which is 4 bytes in, after RFC1001 field */ |
5608 | data_offset = (FILE_UNIX_BASIC_INFO *)((char *) pSMB + offset + 4); | |
1da177e4 LT |
5609 | memset(data_offset, 0, count); |
5610 | pSMB->DataOffset = cpu_to_le16(offset); | |
5611 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5612 | pSMB->SetupCount = 1; | |
5613 | pSMB->Reserved3 = 0; | |
5614 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
5615 | byte_count = 3 /* pad */ + params + count; | |
5616 | pSMB->ParameterCount = cpu_to_le16(params); | |
5617 | pSMB->DataCount = cpu_to_le16(count); | |
5618 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5619 | pSMB->TotalDataCount = pSMB->DataCount; | |
5620 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_BASIC); | |
5621 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5622 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 | 5623 | |
654cf14a | 5624 | cifs_fill_unix_set_info(data_offset, args); |
1da177e4 LT |
5625 | |
5626 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
5627 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5628 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5629 | if (rc) |
f96637be | 5630 | cifs_dbg(FYI, "SetPathInfo (perms) returned %d\n", rc); |
1da177e4 | 5631 | |
0d817bc0 | 5632 | cifs_buf_release(pSMB); |
1da177e4 LT |
5633 | if (rc == -EAGAIN) |
5634 | goto setPermsRetry; | |
5635 | return rc; | |
5636 | } | |
5637 | ||
1da177e4 | 5638 | #ifdef CONFIG_CIFS_XATTR |
31c0519f JL |
5639 | /* |
5640 | * Do a path-based QUERY_ALL_EAS call and parse the result. This is a common | |
5641 | * function used by listxattr and getxattr type calls. When ea_name is set, | |
5642 | * it looks for that attribute name and stuffs that value into the EAData | |
5643 | * buffer. When ea_name is NULL, it stuffs a list of attribute names into the | |
5644 | * buffer. In both cases, the return value is either the length of the | |
5645 | * resulting data or a negative error code. If EAData is a NULL pointer then | |
5646 | * the data isn't copied to it, but the length is returned. | |
5647 | */ | |
1da177e4 | 5648 | ssize_t |
6d5786a3 | 5649 | CIFSSMBQAllEAs(const unsigned int xid, struct cifs_tcon *tcon, |
31c0519f JL |
5650 | const unsigned char *searchName, const unsigned char *ea_name, |
5651 | char *EAData, size_t buf_size, | |
67b4c889 | 5652 | struct cifs_sb_info *cifs_sb) |
1da177e4 LT |
5653 | { |
5654 | /* BB assumes one setup word */ | |
5655 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
5656 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
67b4c889 SF |
5657 | int remap = cifs_remap(cifs_sb); |
5658 | struct nls_table *nls_codepage = cifs_sb->local_nls; | |
1da177e4 LT |
5659 | int rc = 0; |
5660 | int bytes_returned; | |
6e462b9f | 5661 | int list_len; |
f0d3868b | 5662 | struct fealist *ea_response_data; |
50c2f753 SF |
5663 | struct fea *temp_fea; |
5664 | char *temp_ptr; | |
0cd126b5 | 5665 | char *end_of_smb; |
f0d3868b | 5666 | __u16 params, byte_count, data_offset; |
5980fc96 | 5667 | unsigned int ea_name_len = ea_name ? strlen(ea_name) : 0; |
1da177e4 | 5668 | |
f96637be | 5669 | cifs_dbg(FYI, "In Query All EAs path %s\n", searchName); |
1da177e4 LT |
5670 | QAllEAsRetry: |
5671 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5672 | (void **) &pSMBr); | |
5673 | if (rc) | |
5674 | return rc; | |
5675 | ||
5676 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
6e462b9f | 5677 | list_len = |
acbbb76a SF |
5678 | cifsConvertToUTF16((__le16 *) pSMB->FileName, searchName, |
5679 | PATH_MAX, nls_codepage, remap); | |
6e462b9f JL |
5680 | list_len++; /* trailing null */ |
5681 | list_len *= 2; | |
340625e6 RS |
5682 | } else { |
5683 | list_len = copy_path_name(pSMB->FileName, searchName); | |
1da177e4 LT |
5684 | } |
5685 | ||
6e462b9f | 5686 | params = 2 /* level */ + 4 /* reserved */ + list_len /* includes NUL */; |
1da177e4 LT |
5687 | pSMB->TotalDataCount = 0; |
5688 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
582d21e5 | 5689 | /* BB find exact max SMB PDU from sess structure BB */ |
e529614a | 5690 | pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize); |
1da177e4 LT |
5691 | pSMB->MaxSetupCount = 0; |
5692 | pSMB->Reserved = 0; | |
5693 | pSMB->Flags = 0; | |
5694 | pSMB->Timeout = 0; | |
5695 | pSMB->Reserved2 = 0; | |
5696 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
50c2f753 | 5697 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); |
1da177e4 LT |
5698 | pSMB->DataCount = 0; |
5699 | pSMB->DataOffset = 0; | |
5700 | pSMB->SetupCount = 1; | |
5701 | pSMB->Reserved3 = 0; | |
5702 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
5703 | byte_count = params + 1 /* pad */ ; | |
5704 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
5705 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
5706 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_QUERY_ALL_EAS); | |
5707 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5708 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5709 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5710 | ||
5711 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5712 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5713 | if (rc) { | |
f96637be | 5714 | cifs_dbg(FYI, "Send error in QueryAllEAs = %d\n", rc); |
f0d3868b JL |
5715 | goto QAllEAsOut; |
5716 | } | |
1da177e4 | 5717 | |
f0d3868b JL |
5718 | |
5719 | /* BB also check enough total bytes returned */ | |
5720 | /* BB we need to improve the validity checking | |
5721 | of these trans2 responses */ | |
5722 | ||
5723 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
820a803f | 5724 | if (rc || get_bcc(&pSMBr->hdr) < 4) { |
f0d3868b JL |
5725 | rc = -EIO; /* bad smb */ |
5726 | goto QAllEAsOut; | |
5727 | } | |
5728 | ||
5729 | /* check that length of list is not more than bcc */ | |
5730 | /* check that each entry does not go beyond length | |
5731 | of list */ | |
5732 | /* check that each element of each entry does not | |
5733 | go beyond end of list */ | |
5734 | /* validate_trans2_offsets() */ | |
5735 | /* BB check if start of smb + data_offset > &bcc+ bcc */ | |
5736 | ||
5737 | data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
5738 | ea_response_data = (struct fealist *) | |
5739 | (((char *) &pSMBr->hdr.Protocol) + data_offset); | |
5740 | ||
6e462b9f | 5741 | list_len = le32_to_cpu(ea_response_data->list_len); |
f96637be | 5742 | cifs_dbg(FYI, "ea length %d\n", list_len); |
6e462b9f | 5743 | if (list_len <= 8) { |
f96637be | 5744 | cifs_dbg(FYI, "empty EA list returned from server\n"); |
60977fcc SF |
5745 | /* didn't find the named attribute */ |
5746 | if (ea_name) | |
5747 | rc = -ENODATA; | |
f0d3868b JL |
5748 | goto QAllEAsOut; |
5749 | } | |
5750 | ||
0cd126b5 | 5751 | /* make sure list_len doesn't go past end of SMB */ |
690c522f | 5752 | end_of_smb = (char *)pByteArea(&pSMBr->hdr) + get_bcc(&pSMBr->hdr); |
0cd126b5 | 5753 | if ((char *)ea_response_data + list_len > end_of_smb) { |
f96637be | 5754 | cifs_dbg(FYI, "EA list appears to go beyond SMB\n"); |
0cd126b5 JL |
5755 | rc = -EIO; |
5756 | goto QAllEAsOut; | |
5757 | } | |
5758 | ||
f0d3868b | 5759 | /* account for ea list len */ |
6e462b9f | 5760 | list_len -= 4; |
398d5843 | 5761 | temp_fea = &ea_response_data->list; |
f0d3868b | 5762 | temp_ptr = (char *)temp_fea; |
6e462b9f | 5763 | while (list_len > 0) { |
122ca007 | 5764 | unsigned int name_len; |
f0d3868b | 5765 | __u16 value_len; |
0cd126b5 | 5766 | |
6e462b9f | 5767 | list_len -= 4; |
f0d3868b | 5768 | temp_ptr += 4; |
0cd126b5 JL |
5769 | /* make sure we can read name_len and value_len */ |
5770 | if (list_len < 0) { | |
f96637be | 5771 | cifs_dbg(FYI, "EA entry goes beyond length of list\n"); |
0cd126b5 JL |
5772 | rc = -EIO; |
5773 | goto QAllEAsOut; | |
5774 | } | |
5775 | ||
5776 | name_len = temp_fea->name_len; | |
5777 | value_len = le16_to_cpu(temp_fea->value_len); | |
5778 | list_len -= name_len + 1 + value_len; | |
5779 | if (list_len < 0) { | |
f96637be | 5780 | cifs_dbg(FYI, "EA entry goes beyond length of list\n"); |
0cd126b5 JL |
5781 | rc = -EIO; |
5782 | goto QAllEAsOut; | |
5783 | } | |
5784 | ||
31c0519f | 5785 | if (ea_name) { |
91d065c4 | 5786 | if (ea_name_len == name_len && |
ac423446 | 5787 | memcmp(ea_name, temp_ptr, name_len) == 0) { |
31c0519f JL |
5788 | temp_ptr += name_len + 1; |
5789 | rc = value_len; | |
5790 | if (buf_size == 0) | |
5791 | goto QAllEAsOut; | |
5792 | if ((size_t)value_len > buf_size) { | |
5793 | rc = -ERANGE; | |
5794 | goto QAllEAsOut; | |
5795 | } | |
5796 | memcpy(EAData, temp_ptr, value_len); | |
5797 | goto QAllEAsOut; | |
5798 | } | |
f0d3868b | 5799 | } else { |
31c0519f JL |
5800 | /* account for prefix user. and trailing null */ |
5801 | rc += (5 + 1 + name_len); | |
5802 | if (rc < (int) buf_size) { | |
5803 | memcpy(EAData, "user.", 5); | |
5804 | EAData += 5; | |
5805 | memcpy(EAData, temp_ptr, name_len); | |
5806 | EAData += name_len; | |
5807 | /* null terminate name */ | |
5808 | *EAData = 0; | |
5809 | ++EAData; | |
5810 | } else if (buf_size == 0) { | |
5811 | /* skip copy - calc size only */ | |
5812 | } else { | |
5813 | /* stop before overrun buffer */ | |
5814 | rc = -ERANGE; | |
5815 | break; | |
5816 | } | |
1da177e4 | 5817 | } |
0cd126b5 | 5818 | temp_ptr += name_len + 1 + value_len; |
f0d3868b | 5819 | temp_fea = (struct fea *)temp_ptr; |
1da177e4 | 5820 | } |
f0d3868b | 5821 | |
31c0519f JL |
5822 | /* didn't find the named attribute */ |
5823 | if (ea_name) | |
5824 | rc = -ENODATA; | |
5825 | ||
f0d3868b | 5826 | QAllEAsOut: |
0d817bc0 | 5827 | cifs_buf_release(pSMB); |
1da177e4 LT |
5828 | if (rc == -EAGAIN) |
5829 | goto QAllEAsRetry; | |
5830 | ||
5831 | return (ssize_t)rc; | |
5832 | } | |
5833 | ||
1da177e4 | 5834 | int |
6d5786a3 PS |
5835 | CIFSSMBSetEA(const unsigned int xid, struct cifs_tcon *tcon, |
5836 | const char *fileName, const char *ea_name, const void *ea_value, | |
50c2f753 | 5837 | const __u16 ea_value_len, const struct nls_table *nls_codepage, |
5517554e | 5838 | struct cifs_sb_info *cifs_sb) |
1da177e4 LT |
5839 | { |
5840 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
5841 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
5842 | struct fealist *parm_data; | |
5843 | int name_len; | |
5844 | int rc = 0; | |
5845 | int bytes_returned = 0; | |
5846 | __u16 params, param_offset, byte_count, offset, count; | |
5517554e | 5847 | int remap = cifs_remap(cifs_sb); |
1da177e4 | 5848 | |
f96637be | 5849 | cifs_dbg(FYI, "In SetEA\n"); |
1da177e4 LT |
5850 | SetEARetry: |
5851 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5852 | (void **) &pSMBr); | |
5853 | if (rc) | |
5854 | return rc; | |
5855 | ||
5856 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5857 | name_len = | |
acbbb76a SF |
5858 | cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName, |
5859 | PATH_MAX, nls_codepage, remap); | |
1da177e4 LT |
5860 | name_len++; /* trailing null */ |
5861 | name_len *= 2; | |
340625e6 RS |
5862 | } else { |
5863 | name_len = copy_path_name(pSMB->FileName, fileName); | |
1da177e4 LT |
5864 | } |
5865 | ||
5866 | params = 6 + name_len; | |
5867 | ||
5868 | /* done calculating parms using name_len of file name, | |
5869 | now use name_len to calculate length of ea name | |
5870 | we are going to create in the inode xattrs */ | |
790fe579 | 5871 | if (ea_name == NULL) |
1da177e4 LT |
5872 | name_len = 0; |
5873 | else | |
50c2f753 | 5874 | name_len = strnlen(ea_name, 255); |
1da177e4 | 5875 | |
398d5843 | 5876 | count = sizeof(*parm_data) + 1 + ea_value_len + name_len; |
1da177e4 | 5877 | pSMB->MaxParameterCount = cpu_to_le16(2); |
582d21e5 SF |
5878 | /* BB find max SMB PDU from sess */ |
5879 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
1da177e4 LT |
5880 | pSMB->MaxSetupCount = 0; |
5881 | pSMB->Reserved = 0; | |
5882 | pSMB->Flags = 0; | |
5883 | pSMB->Timeout = 0; | |
5884 | pSMB->Reserved2 = 0; | |
5885 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
50c2f753 | 5886 | InformationLevel) - 4; |
1da177e4 LT |
5887 | offset = param_offset + params; |
5888 | pSMB->InformationLevel = | |
5889 | cpu_to_le16(SMB_SET_FILE_EA); | |
5890 | ||
ade7db99 | 5891 | parm_data = (void *)pSMB + offsetof(struct smb_hdr, Protocol) + offset; |
1da177e4 LT |
5892 | pSMB->ParameterOffset = cpu_to_le16(param_offset); |
5893 | pSMB->DataOffset = cpu_to_le16(offset); | |
5894 | pSMB->SetupCount = 1; | |
5895 | pSMB->Reserved3 = 0; | |
5896 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
5897 | byte_count = 3 /* pad */ + params + count; | |
5898 | pSMB->DataCount = cpu_to_le16(count); | |
5899 | parm_data->list_len = cpu_to_le32(count); | |
398d5843 | 5900 | parm_data->list.EA_flags = 0; |
1da177e4 | 5901 | /* we checked above that name len is less than 255 */ |
398d5843 | 5902 | parm_data->list.name_len = (__u8)name_len; |
1da177e4 | 5903 | /* EA names are always ASCII */ |
790fe579 | 5904 | if (ea_name) |
398d5843 KC |
5905 | strncpy(parm_data->list.name, ea_name, name_len); |
5906 | parm_data->list.name[name_len] = '\0'; | |
5907 | parm_data->list.value_len = cpu_to_le16(ea_value_len); | |
1da177e4 LT |
5908 | /* caller ensures that ea_value_len is less than 64K but |
5909 | we need to ensure that it fits within the smb */ | |
5910 | ||
50c2f753 SF |
5911 | /*BB add length check to see if it would fit in |
5912 | negotiated SMB buffer size BB */ | |
790fe579 SF |
5913 | /* if (ea_value_len > buffer_size - 512 (enough for header)) */ |
5914 | if (ea_value_len) | |
398d5843 | 5915 | memcpy(parm_data->list.name + name_len + 1, |
50c2f753 | 5916 | ea_value, ea_value_len); |
1da177e4 LT |
5917 | |
5918 | pSMB->TotalDataCount = pSMB->DataCount; | |
5919 | pSMB->ParameterCount = cpu_to_le16(params); | |
5920 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5921 | pSMB->Reserved4 = 0; | |
be8e3b00 | 5922 | inc_rfc1001_len(pSMB, byte_count); |
1da177e4 LT |
5923 | pSMB->ByteCount = cpu_to_le16(byte_count); |
5924 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5925 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
ad7a2926 | 5926 | if (rc) |
f96637be | 5927 | cifs_dbg(FYI, "SetPathInfo (EA) returned %d\n", rc); |
1da177e4 LT |
5928 | |
5929 | cifs_buf_release(pSMB); | |
5930 | ||
5931 | if (rc == -EAGAIN) | |
5932 | goto SetEARetry; | |
5933 | ||
5934 | return rc; | |
5935 | } | |
1da177e4 | 5936 | #endif |