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1 | /* | |
2 | * fs/cifs/cifssmb.c | |
3 | * | |
4 | * Copyright (C) International Business Machines Corp., 2002,2008 | |
5 | * Author(s): Steve French (sfrench@us.ibm.com) | |
6 | * | |
7 | * Contains the routines for constructing the SMB PDUs themselves | |
8 | * | |
9 | * This library is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU Lesser General Public License as published | |
11 | * by the Free Software Foundation; either version 2.1 of the License, or | |
12 | * (at your option) any later version. | |
13 | * | |
14 | * This library is distributed in the hope that it will be useful, | |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See | |
17 | * the GNU Lesser General Public License for more details. | |
18 | * | |
19 | * You should have received a copy of the GNU Lesser General Public License | |
20 | * along with this library; if not, write to the Free Software | |
21 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
22 | */ | |
23 | ||
24 | /* SMB/CIFS PDU handling routines here - except for leftovers in connect.c */ | |
25 | /* These are mostly routines that operate on a pathname, or on a tree id */ | |
26 | /* (mounted volume), but there are eight handle based routines which must be */ | |
27 | /* treated slightly differently for reconnection purposes since we never */ | |
28 | /* want to reuse a stale file handle and only the caller knows the file info */ | |
29 | ||
30 | #include <linux/fs.h> | |
31 | #include <linux/kernel.h> | |
32 | #include <linux/vfs.h> | |
33 | #include <linux/posix_acl_xattr.h> | |
34 | #include <asm/uaccess.h> | |
35 | #include "cifspdu.h" | |
36 | #include "cifsglob.h" | |
37 | #include "cifsacl.h" | |
38 | #include "cifsproto.h" | |
39 | #include "cifs_unicode.h" | |
40 | #include "cifs_debug.h" | |
41 | ||
42 | #ifdef CONFIG_CIFS_POSIX | |
43 | static struct { | |
44 | int index; | |
45 | char *name; | |
46 | } protocols[] = { | |
47 | #ifdef CONFIG_CIFS_WEAK_PW_HASH | |
48 | {LANMAN_PROT, "\2LM1.2X002"}, | |
49 | {LANMAN2_PROT, "\2LANMAN2.1"}, | |
50 | #endif /* weak password hashing for legacy clients */ | |
51 | {CIFS_PROT, "\2NT LM 0.12"}, | |
52 | {POSIX_PROT, "\2POSIX 2"}, | |
53 | {BAD_PROT, "\2"} | |
54 | }; | |
55 | #else | |
56 | static struct { | |
57 | int index; | |
58 | char *name; | |
59 | } protocols[] = { | |
60 | #ifdef CONFIG_CIFS_WEAK_PW_HASH | |
61 | {LANMAN_PROT, "\2LM1.2X002"}, | |
62 | {LANMAN2_PROT, "\2LANMAN2.1"}, | |
63 | #endif /* weak password hashing for legacy clients */ | |
64 | {CIFS_PROT, "\2NT LM 0.12"}, | |
65 | {BAD_PROT, "\2"} | |
66 | }; | |
67 | #endif | |
68 | ||
69 | /* define the number of elements in the cifs dialect array */ | |
70 | #ifdef CONFIG_CIFS_POSIX | |
71 | #ifdef CONFIG_CIFS_WEAK_PW_HASH | |
72 | #define CIFS_NUM_PROT 4 | |
73 | #else | |
74 | #define CIFS_NUM_PROT 2 | |
75 | #endif /* CIFS_WEAK_PW_HASH */ | |
76 | #else /* not posix */ | |
77 | #ifdef CONFIG_CIFS_WEAK_PW_HASH | |
78 | #define CIFS_NUM_PROT 3 | |
79 | #else | |
80 | #define CIFS_NUM_PROT 1 | |
81 | #endif /* CONFIG_CIFS_WEAK_PW_HASH */ | |
82 | #endif /* CIFS_POSIX */ | |
83 | ||
84 | ||
85 | /* Mark as invalid, all open files on tree connections since they | |
86 | were closed when session to server was lost */ | |
87 | static void mark_open_files_invalid(struct cifsTconInfo *pTcon) | |
88 | { | |
89 | struct cifsFileInfo *open_file = NULL; | |
90 | struct list_head *tmp; | |
91 | struct list_head *tmp1; | |
92 | ||
93 | /* list all files open on tree connection and mark them invalid */ | |
94 | write_lock(&GlobalSMBSeslock); | |
95 | list_for_each_safe(tmp, tmp1, &pTcon->openFileList) { | |
96 | open_file = list_entry(tmp, struct cifsFileInfo, tlist); | |
97 | if (open_file) | |
98 | open_file->invalidHandle = true; | |
99 | } | |
100 | write_unlock(&GlobalSMBSeslock); | |
101 | /* BB Add call to invalidate_inodes(sb) for all superblocks mounted | |
102 | to this tcon */ | |
103 | } | |
104 | ||
105 | /* Allocate and return pointer to an SMB request buffer, and set basic | |
106 | SMB information in the SMB header. If the return code is zero, this | |
107 | function must have filled in request_buf pointer */ | |
108 | static int | |
109 | small_smb_init(int smb_command, int wct, struct cifsTconInfo *tcon, | |
110 | void **request_buf) | |
111 | { | |
112 | int rc = 0; | |
113 | ||
114 | /* SMBs NegProt, SessSetup, uLogoff do not have tcon yet so | |
115 | check for tcp and smb session status done differently | |
116 | for those three - in the calling routine */ | |
117 | if (tcon) { | |
118 | if (tcon->tidStatus == CifsExiting) { | |
119 | /* only tree disconnect, open, and write, | |
120 | (and ulogoff which does not have tcon) | |
121 | are allowed as we start force umount */ | |
122 | if ((smb_command != SMB_COM_WRITE_ANDX) && | |
123 | (smb_command != SMB_COM_OPEN_ANDX) && | |
124 | (smb_command != SMB_COM_TREE_DISCONNECT)) { | |
125 | cFYI(1, ("can not send cmd %d while umounting", | |
126 | smb_command)); | |
127 | return -ENODEV; | |
128 | } | |
129 | } | |
130 | if ((tcon->ses) && (tcon->ses->status != CifsExiting) && | |
131 | (tcon->ses->server)) { | |
132 | struct nls_table *nls_codepage; | |
133 | /* Give Demultiplex thread up to 10 seconds to | |
134 | reconnect, should be greater than cifs socket | |
135 | timeout which is 7 seconds */ | |
136 | while (tcon->ses->server->tcpStatus == | |
137 | CifsNeedReconnect) { | |
138 | wait_event_interruptible_timeout(tcon->ses->server->response_q, | |
139 | (tcon->ses->server->tcpStatus == | |
140 | CifsGood), 10 * HZ); | |
141 | if (tcon->ses->server->tcpStatus == | |
142 | CifsNeedReconnect) { | |
143 | /* on "soft" mounts we wait once */ | |
144 | if (!tcon->retry || | |
145 | (tcon->ses->status == CifsExiting)) { | |
146 | cFYI(1, ("gave up waiting on " | |
147 | "reconnect in smb_init")); | |
148 | return -EHOSTDOWN; | |
149 | } /* else "hard" mount - keep retrying | |
150 | until process is killed or server | |
151 | comes back on-line */ | |
152 | } else /* TCP session is reestablished now */ | |
153 | break; | |
154 | } | |
155 | ||
156 | nls_codepage = load_nls_default(); | |
157 | /* need to prevent multiple threads trying to | |
158 | simultaneously reconnect the same SMB session */ | |
159 | down(&tcon->ses->sesSem); | |
160 | if (tcon->ses->status == CifsNeedReconnect) | |
161 | rc = cifs_setup_session(0, tcon->ses, | |
162 | nls_codepage); | |
163 | if (!rc && (tcon->tidStatus == CifsNeedReconnect)) { | |
164 | mark_open_files_invalid(tcon); | |
165 | rc = CIFSTCon(0, tcon->ses, tcon->treeName, | |
166 | tcon, nls_codepage); | |
167 | up(&tcon->ses->sesSem); | |
168 | /* BB FIXME add code to check if wsize needs | |
169 | update due to negotiated smb buffer size | |
170 | shrinking */ | |
171 | if (rc == 0) { | |
172 | atomic_inc(&tconInfoReconnectCount); | |
173 | /* tell server Unix caps we support */ | |
174 | if (tcon->ses->capabilities & CAP_UNIX) | |
175 | reset_cifs_unix_caps( | |
176 | 0 /* no xid */, | |
177 | tcon, | |
178 | NULL /* we do not know sb */, | |
179 | NULL /* no vol info */); | |
180 | } | |
181 | ||
182 | cFYI(1, ("reconnect tcon rc = %d", rc)); | |
183 | /* Removed call to reopen open files here. | |
184 | It is safer (and faster) to reopen files | |
185 | one at a time as needed in read and write */ | |
186 | ||
187 | /* Check if handle based operation so we | |
188 | know whether we can continue or not without | |
189 | returning to caller to reset file handle */ | |
190 | switch (smb_command) { | |
191 | case SMB_COM_READ_ANDX: | |
192 | case SMB_COM_WRITE_ANDX: | |
193 | case SMB_COM_CLOSE: | |
194 | case SMB_COM_FIND_CLOSE2: | |
195 | case SMB_COM_LOCKING_ANDX: { | |
196 | unload_nls(nls_codepage); | |
197 | return -EAGAIN; | |
198 | } | |
199 | } | |
200 | } else { | |
201 | up(&tcon->ses->sesSem); | |
202 | } | |
203 | unload_nls(nls_codepage); | |
204 | ||
205 | } else { | |
206 | return -EIO; | |
207 | } | |
208 | } | |
209 | if (rc) | |
210 | return rc; | |
211 | ||
212 | *request_buf = cifs_small_buf_get(); | |
213 | if (*request_buf == NULL) { | |
214 | /* BB should we add a retry in here if not a writepage? */ | |
215 | return -ENOMEM; | |
216 | } | |
217 | ||
218 | header_assemble((struct smb_hdr *) *request_buf, smb_command, | |
219 | tcon, wct); | |
220 | ||
221 | if (tcon != NULL) | |
222 | cifs_stats_inc(&tcon->num_smbs_sent); | |
223 | ||
224 | return rc; | |
225 | } | |
226 | ||
227 | int | |
228 | small_smb_init_no_tc(const int smb_command, const int wct, | |
229 | struct cifsSesInfo *ses, void **request_buf) | |
230 | { | |
231 | int rc; | |
232 | struct smb_hdr *buffer; | |
233 | ||
234 | rc = small_smb_init(smb_command, wct, NULL, request_buf); | |
235 | if (rc) | |
236 | return rc; | |
237 | ||
238 | buffer = (struct smb_hdr *)*request_buf; | |
239 | buffer->Mid = GetNextMid(ses->server); | |
240 | if (ses->capabilities & CAP_UNICODE) | |
241 | buffer->Flags2 |= SMBFLG2_UNICODE; | |
242 | if (ses->capabilities & CAP_STATUS32) | |
243 | buffer->Flags2 |= SMBFLG2_ERR_STATUS; | |
244 | ||
245 | /* uid, tid can stay at zero as set in header assemble */ | |
246 | ||
247 | /* BB add support for turning on the signing when | |
248 | this function is used after 1st of session setup requests */ | |
249 | ||
250 | return rc; | |
251 | } | |
252 | ||
253 | /* If the return code is zero, this function must fill in request_buf pointer */ | |
254 | static int | |
255 | smb_init(int smb_command, int wct, struct cifsTconInfo *tcon, | |
256 | void **request_buf /* returned */ , | |
257 | void **response_buf /* returned */ ) | |
258 | { | |
259 | int rc = 0; | |
260 | ||
261 | /* SMBs NegProt, SessSetup, uLogoff do not have tcon yet so | |
262 | check for tcp and smb session status done differently | |
263 | for those three - in the calling routine */ | |
264 | if (tcon) { | |
265 | if (tcon->tidStatus == CifsExiting) { | |
266 | /* only tree disconnect, open, and write, | |
267 | (and ulogoff which does not have tcon) | |
268 | are allowed as we start force umount */ | |
269 | if ((smb_command != SMB_COM_WRITE_ANDX) && | |
270 | (smb_command != SMB_COM_OPEN_ANDX) && | |
271 | (smb_command != SMB_COM_TREE_DISCONNECT)) { | |
272 | cFYI(1, ("can not send cmd %d while umounting", | |
273 | smb_command)); | |
274 | return -ENODEV; | |
275 | } | |
276 | } | |
277 | ||
278 | if ((tcon->ses) && (tcon->ses->status != CifsExiting) && | |
279 | (tcon->ses->server)) { | |
280 | struct nls_table *nls_codepage; | |
281 | /* Give Demultiplex thread up to 10 seconds to | |
282 | reconnect, should be greater than cifs socket | |
283 | timeout which is 7 seconds */ | |
284 | while (tcon->ses->server->tcpStatus == | |
285 | CifsNeedReconnect) { | |
286 | wait_event_interruptible_timeout(tcon->ses->server->response_q, | |
287 | (tcon->ses->server->tcpStatus == | |
288 | CifsGood), 10 * HZ); | |
289 | if (tcon->ses->server->tcpStatus == | |
290 | CifsNeedReconnect) { | |
291 | /* on "soft" mounts we wait once */ | |
292 | if (!tcon->retry || | |
293 | (tcon->ses->status == CifsExiting)) { | |
294 | cFYI(1, ("gave up waiting on " | |
295 | "reconnect in smb_init")); | |
296 | return -EHOSTDOWN; | |
297 | } /* else "hard" mount - keep retrying | |
298 | until process is killed or server | |
299 | comes on-line */ | |
300 | } else /* TCP session is reestablished now */ | |
301 | break; | |
302 | } | |
303 | nls_codepage = load_nls_default(); | |
304 | /* need to prevent multiple threads trying to | |
305 | simultaneously reconnect the same SMB session */ | |
306 | down(&tcon->ses->sesSem); | |
307 | if (tcon->ses->status == CifsNeedReconnect) | |
308 | rc = cifs_setup_session(0, tcon->ses, | |
309 | nls_codepage); | |
310 | if (!rc && (tcon->tidStatus == CifsNeedReconnect)) { | |
311 | mark_open_files_invalid(tcon); | |
312 | rc = CIFSTCon(0, tcon->ses, tcon->treeName, | |
313 | tcon, nls_codepage); | |
314 | up(&tcon->ses->sesSem); | |
315 | /* BB FIXME add code to check if wsize needs | |
316 | update due to negotiated smb buffer size | |
317 | shrinking */ | |
318 | if (rc == 0) { | |
319 | atomic_inc(&tconInfoReconnectCount); | |
320 | /* tell server Unix caps we support */ | |
321 | if (tcon->ses->capabilities & CAP_UNIX) | |
322 | reset_cifs_unix_caps( | |
323 | 0 /* no xid */, | |
324 | tcon, | |
325 | NULL /* do not know sb */, | |
326 | NULL /* no vol info */); | |
327 | } | |
328 | ||
329 | cFYI(1, ("reconnect tcon rc = %d", rc)); | |
330 | /* Removed call to reopen open files here. | |
331 | It is safer (and faster) to reopen files | |
332 | one at a time as needed in read and write */ | |
333 | ||
334 | /* Check if handle based operation so we | |
335 | know whether we can continue or not without | |
336 | returning to caller to reset file handle */ | |
337 | switch (smb_command) { | |
338 | case SMB_COM_READ_ANDX: | |
339 | case SMB_COM_WRITE_ANDX: | |
340 | case SMB_COM_CLOSE: | |
341 | case SMB_COM_FIND_CLOSE2: | |
342 | case SMB_COM_LOCKING_ANDX: { | |
343 | unload_nls(nls_codepage); | |
344 | return -EAGAIN; | |
345 | } | |
346 | } | |
347 | } else { | |
348 | up(&tcon->ses->sesSem); | |
349 | } | |
350 | unload_nls(nls_codepage); | |
351 | ||
352 | } else { | |
353 | return -EIO; | |
354 | } | |
355 | } | |
356 | if (rc) | |
357 | return rc; | |
358 | ||
359 | *request_buf = cifs_buf_get(); | |
360 | if (*request_buf == NULL) { | |
361 | /* BB should we add a retry in here if not a writepage? */ | |
362 | return -ENOMEM; | |
363 | } | |
364 | /* Although the original thought was we needed the response buf for */ | |
365 | /* potential retries of smb operations it turns out we can determine */ | |
366 | /* from the mid flags when the request buffer can be resent without */ | |
367 | /* having to use a second distinct buffer for the response */ | |
368 | if (response_buf) | |
369 | *response_buf = *request_buf; | |
370 | ||
371 | header_assemble((struct smb_hdr *) *request_buf, smb_command, tcon, | |
372 | wct); | |
373 | ||
374 | if (tcon != NULL) | |
375 | cifs_stats_inc(&tcon->num_smbs_sent); | |
376 | ||
377 | return rc; | |
378 | } | |
379 | ||
380 | static int validate_t2(struct smb_t2_rsp *pSMB) | |
381 | { | |
382 | int rc = -EINVAL; | |
383 | int total_size; | |
384 | char *pBCC; | |
385 | ||
386 | /* check for plausible wct, bcc and t2 data and parm sizes */ | |
387 | /* check for parm and data offset going beyond end of smb */ | |
388 | if (pSMB->hdr.WordCount >= 10) { | |
389 | if ((le16_to_cpu(pSMB->t2_rsp.ParameterOffset) <= 1024) && | |
390 | (le16_to_cpu(pSMB->t2_rsp.DataOffset) <= 1024)) { | |
391 | /* check that bcc is at least as big as parms + data */ | |
392 | /* check that bcc is less than negotiated smb buffer */ | |
393 | total_size = le16_to_cpu(pSMB->t2_rsp.ParameterCount); | |
394 | if (total_size < 512) { | |
395 | total_size += | |
396 | le16_to_cpu(pSMB->t2_rsp.DataCount); | |
397 | /* BCC le converted in SendReceive */ | |
398 | pBCC = (pSMB->hdr.WordCount * 2) + | |
399 | sizeof(struct smb_hdr) + | |
400 | (char *)pSMB; | |
401 | if ((total_size <= (*(u16 *)pBCC)) && | |
402 | (total_size < | |
403 | CIFSMaxBufSize+MAX_CIFS_HDR_SIZE)) { | |
404 | return 0; | |
405 | } | |
406 | } | |
407 | } | |
408 | } | |
409 | cifs_dump_mem("Invalid transact2 SMB: ", (char *)pSMB, | |
410 | sizeof(struct smb_t2_rsp) + 16); | |
411 | return rc; | |
412 | } | |
413 | int | |
414 | CIFSSMBNegotiate(unsigned int xid, struct cifsSesInfo *ses) | |
415 | { | |
416 | NEGOTIATE_REQ *pSMB; | |
417 | NEGOTIATE_RSP *pSMBr; | |
418 | int rc = 0; | |
419 | int bytes_returned; | |
420 | int i; | |
421 | struct TCP_Server_Info *server; | |
422 | u16 count; | |
423 | unsigned int secFlags; | |
424 | u16 dialect; | |
425 | ||
426 | if (ses->server) | |
427 | server = ses->server; | |
428 | else { | |
429 | rc = -EIO; | |
430 | return rc; | |
431 | } | |
432 | rc = smb_init(SMB_COM_NEGOTIATE, 0, NULL /* no tcon yet */ , | |
433 | (void **) &pSMB, (void **) &pSMBr); | |
434 | if (rc) | |
435 | return rc; | |
436 | ||
437 | /* if any of auth flags (ie not sign or seal) are overriden use them */ | |
438 | if (ses->overrideSecFlg & (~(CIFSSEC_MUST_SIGN | CIFSSEC_MUST_SEAL))) | |
439 | secFlags = ses->overrideSecFlg; /* BB FIXME fix sign flags? */ | |
440 | else /* if override flags set only sign/seal OR them with global auth */ | |
441 | secFlags = extended_security | ses->overrideSecFlg; | |
442 | ||
443 | cFYI(1, ("secFlags 0x%x", secFlags)); | |
444 | ||
445 | pSMB->hdr.Mid = GetNextMid(server); | |
446 | pSMB->hdr.Flags2 |= (SMBFLG2_UNICODE | SMBFLG2_ERR_STATUS); | |
447 | ||
448 | if ((secFlags & CIFSSEC_MUST_KRB5) == CIFSSEC_MUST_KRB5) | |
449 | pSMB->hdr.Flags2 |= SMBFLG2_EXT_SEC; | |
450 | else if ((secFlags & CIFSSEC_AUTH_MASK) == CIFSSEC_MAY_KRB5) { | |
451 | cFYI(1, ("Kerberos only mechanism, enable extended security")); | |
452 | pSMB->hdr.Flags2 |= SMBFLG2_EXT_SEC; | |
453 | } | |
454 | ||
455 | count = 0; | |
456 | for (i = 0; i < CIFS_NUM_PROT; i++) { | |
457 | strncpy(pSMB->DialectsArray+count, protocols[i].name, 16); | |
458 | count += strlen(protocols[i].name) + 1; | |
459 | /* null at end of source and target buffers anyway */ | |
460 | } | |
461 | pSMB->hdr.smb_buf_length += count; | |
462 | pSMB->ByteCount = cpu_to_le16(count); | |
463 | ||
464 | rc = SendReceive(xid, ses, (struct smb_hdr *) pSMB, | |
465 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
466 | if (rc != 0) | |
467 | goto neg_err_exit; | |
468 | ||
469 | dialect = le16_to_cpu(pSMBr->DialectIndex); | |
470 | cFYI(1, ("Dialect: %d", dialect)); | |
471 | /* Check wct = 1 error case */ | |
472 | if ((pSMBr->hdr.WordCount < 13) || (dialect == BAD_PROT)) { | |
473 | /* core returns wct = 1, but we do not ask for core - otherwise | |
474 | small wct just comes when dialect index is -1 indicating we | |
475 | could not negotiate a common dialect */ | |
476 | rc = -EOPNOTSUPP; | |
477 | goto neg_err_exit; | |
478 | #ifdef CONFIG_CIFS_WEAK_PW_HASH | |
479 | } else if ((pSMBr->hdr.WordCount == 13) | |
480 | && ((dialect == LANMAN_PROT) | |
481 | || (dialect == LANMAN2_PROT))) { | |
482 | __s16 tmp; | |
483 | struct lanman_neg_rsp *rsp = (struct lanman_neg_rsp *)pSMBr; | |
484 | ||
485 | if ((secFlags & CIFSSEC_MAY_LANMAN) || | |
486 | (secFlags & CIFSSEC_MAY_PLNTXT)) | |
487 | server->secType = LANMAN; | |
488 | else { | |
489 | cERROR(1, ("mount failed weak security disabled" | |
490 | " in /proc/fs/cifs/SecurityFlags")); | |
491 | rc = -EOPNOTSUPP; | |
492 | goto neg_err_exit; | |
493 | } | |
494 | server->secMode = (__u8)le16_to_cpu(rsp->SecurityMode); | |
495 | server->maxReq = le16_to_cpu(rsp->MaxMpxCount); | |
496 | server->maxBuf = min((__u32)le16_to_cpu(rsp->MaxBufSize), | |
497 | (__u32)CIFSMaxBufSize + MAX_CIFS_HDR_SIZE); | |
498 | GETU32(server->sessid) = le32_to_cpu(rsp->SessionKey); | |
499 | /* even though we do not use raw we might as well set this | |
500 | accurately, in case we ever find a need for it */ | |
501 | if ((le16_to_cpu(rsp->RawMode) & RAW_ENABLE) == RAW_ENABLE) { | |
502 | server->maxRw = 0xFF00; | |
503 | server->capabilities = CAP_MPX_MODE | CAP_RAW_MODE; | |
504 | } else { | |
505 | server->maxRw = 0;/* we do not need to use raw anyway */ | |
506 | server->capabilities = CAP_MPX_MODE; | |
507 | } | |
508 | tmp = (__s16)le16_to_cpu(rsp->ServerTimeZone); | |
509 | if (tmp == -1) { | |
510 | /* OS/2 often does not set timezone therefore | |
511 | * we must use server time to calc time zone. | |
512 | * Could deviate slightly from the right zone. | |
513 | * Smallest defined timezone difference is 15 minutes | |
514 | * (i.e. Nepal). Rounding up/down is done to match | |
515 | * this requirement. | |
516 | */ | |
517 | int val, seconds, remain, result; | |
518 | struct timespec ts, utc; | |
519 | utc = CURRENT_TIME; | |
520 | ts = cnvrtDosUnixTm(le16_to_cpu(rsp->SrvTime.Date), | |
521 | le16_to_cpu(rsp->SrvTime.Time)); | |
522 | cFYI(1, ("SrvTime %d sec since 1970 (utc: %d) diff: %d", | |
523 | (int)ts.tv_sec, (int)utc.tv_sec, | |
524 | (int)(utc.tv_sec - ts.tv_sec))); | |
525 | val = (int)(utc.tv_sec - ts.tv_sec); | |
526 | seconds = abs(val); | |
527 | result = (seconds / MIN_TZ_ADJ) * MIN_TZ_ADJ; | |
528 | remain = seconds % MIN_TZ_ADJ; | |
529 | if (remain >= (MIN_TZ_ADJ / 2)) | |
530 | result += MIN_TZ_ADJ; | |
531 | if (val < 0) | |
532 | result = -result; | |
533 | server->timeAdj = result; | |
534 | } else { | |
535 | server->timeAdj = (int)tmp; | |
536 | server->timeAdj *= 60; /* also in seconds */ | |
537 | } | |
538 | cFYI(1, ("server->timeAdj: %d seconds", server->timeAdj)); | |
539 | ||
540 | ||
541 | /* BB get server time for time conversions and add | |
542 | code to use it and timezone since this is not UTC */ | |
543 | ||
544 | if (rsp->EncryptionKeyLength == | |
545 | cpu_to_le16(CIFS_CRYPTO_KEY_SIZE)) { | |
546 | memcpy(server->cryptKey, rsp->EncryptionKey, | |
547 | CIFS_CRYPTO_KEY_SIZE); | |
548 | } else if (server->secMode & SECMODE_PW_ENCRYPT) { | |
549 | rc = -EIO; /* need cryptkey unless plain text */ | |
550 | goto neg_err_exit; | |
551 | } | |
552 | ||
553 | cFYI(1, ("LANMAN negotiated")); | |
554 | /* we will not end up setting signing flags - as no signing | |
555 | was in LANMAN and server did not return the flags on */ | |
556 | goto signing_check; | |
557 | #else /* weak security disabled */ | |
558 | } else if (pSMBr->hdr.WordCount == 13) { | |
559 | cERROR(1, ("mount failed, cifs module not built " | |
560 | "with CIFS_WEAK_PW_HASH support")); | |
561 | rc = -EOPNOTSUPP; | |
562 | #endif /* WEAK_PW_HASH */ | |
563 | goto neg_err_exit; | |
564 | } else if (pSMBr->hdr.WordCount != 17) { | |
565 | /* unknown wct */ | |
566 | rc = -EOPNOTSUPP; | |
567 | goto neg_err_exit; | |
568 | } | |
569 | /* else wct == 17 NTLM */ | |
570 | server->secMode = pSMBr->SecurityMode; | |
571 | if ((server->secMode & SECMODE_USER) == 0) | |
572 | cFYI(1, ("share mode security")); | |
573 | ||
574 | if ((server->secMode & SECMODE_PW_ENCRYPT) == 0) | |
575 | #ifdef CONFIG_CIFS_WEAK_PW_HASH | |
576 | if ((secFlags & CIFSSEC_MAY_PLNTXT) == 0) | |
577 | #endif /* CIFS_WEAK_PW_HASH */ | |
578 | cERROR(1, ("Server requests plain text password" | |
579 | " but client support disabled")); | |
580 | ||
581 | if ((secFlags & CIFSSEC_MUST_NTLMV2) == CIFSSEC_MUST_NTLMV2) | |
582 | server->secType = NTLMv2; | |
583 | else if (secFlags & CIFSSEC_MAY_NTLM) | |
584 | server->secType = NTLM; | |
585 | else if (secFlags & CIFSSEC_MAY_NTLMV2) | |
586 | server->secType = NTLMv2; | |
587 | else if (secFlags & CIFSSEC_MAY_KRB5) | |
588 | server->secType = Kerberos; | |
589 | else if (secFlags & CIFSSEC_MAY_LANMAN) | |
590 | server->secType = LANMAN; | |
591 | /* #ifdef CONFIG_CIFS_EXPERIMENTAL | |
592 | else if (secFlags & CIFSSEC_MAY_PLNTXT) | |
593 | server->secType = ?? | |
594 | #endif */ | |
595 | else { | |
596 | rc = -EOPNOTSUPP; | |
597 | cERROR(1, ("Invalid security type")); | |
598 | goto neg_err_exit; | |
599 | } | |
600 | /* else ... any others ...? */ | |
601 | ||
602 | /* one byte, so no need to convert this or EncryptionKeyLen from | |
603 | little endian */ | |
604 | server->maxReq = le16_to_cpu(pSMBr->MaxMpxCount); | |
605 | /* probably no need to store and check maxvcs */ | |
606 | server->maxBuf = min(le32_to_cpu(pSMBr->MaxBufferSize), | |
607 | (__u32) CIFSMaxBufSize + MAX_CIFS_HDR_SIZE); | |
608 | server->maxRw = le32_to_cpu(pSMBr->MaxRawSize); | |
609 | cFYI(DBG2, ("Max buf = %d", ses->server->maxBuf)); | |
610 | GETU32(ses->server->sessid) = le32_to_cpu(pSMBr->SessionKey); | |
611 | server->capabilities = le32_to_cpu(pSMBr->Capabilities); | |
612 | server->timeAdj = (int)(__s16)le16_to_cpu(pSMBr->ServerTimeZone); | |
613 | server->timeAdj *= 60; | |
614 | if (pSMBr->EncryptionKeyLength == CIFS_CRYPTO_KEY_SIZE) { | |
615 | memcpy(server->cryptKey, pSMBr->u.EncryptionKey, | |
616 | CIFS_CRYPTO_KEY_SIZE); | |
617 | } else if ((pSMBr->hdr.Flags2 & SMBFLG2_EXT_SEC) | |
618 | && (pSMBr->EncryptionKeyLength == 0)) { | |
619 | /* decode security blob */ | |
620 | } else if (server->secMode & SECMODE_PW_ENCRYPT) { | |
621 | rc = -EIO; /* no crypt key only if plain text pwd */ | |
622 | goto neg_err_exit; | |
623 | } | |
624 | ||
625 | /* BB might be helpful to save off the domain of server here */ | |
626 | ||
627 | if ((pSMBr->hdr.Flags2 & SMBFLG2_EXT_SEC) && | |
628 | (server->capabilities & CAP_EXTENDED_SECURITY)) { | |
629 | count = pSMBr->ByteCount; | |
630 | if (count < 16) { | |
631 | rc = -EIO; | |
632 | goto neg_err_exit; | |
633 | } | |
634 | ||
635 | if (server->socketUseCount.counter > 1) { | |
636 | if (memcmp(server->server_GUID, | |
637 | pSMBr->u.extended_response. | |
638 | GUID, 16) != 0) { | |
639 | cFYI(1, ("server UID changed")); | |
640 | memcpy(server->server_GUID, | |
641 | pSMBr->u.extended_response.GUID, | |
642 | 16); | |
643 | } | |
644 | } else | |
645 | memcpy(server->server_GUID, | |
646 | pSMBr->u.extended_response.GUID, 16); | |
647 | ||
648 | if (count == 16) { | |
649 | server->secType = RawNTLMSSP; | |
650 | } else { | |
651 | rc = decode_negTokenInit(pSMBr->u.extended_response. | |
652 | SecurityBlob, | |
653 | count - 16, | |
654 | &server->secType); | |
655 | if (rc == 1) { | |
656 | rc = 0; | |
657 | } else { | |
658 | rc = -EINVAL; | |
659 | } | |
660 | } | |
661 | } else | |
662 | server->capabilities &= ~CAP_EXTENDED_SECURITY; | |
663 | ||
664 | #ifdef CONFIG_CIFS_WEAK_PW_HASH | |
665 | signing_check: | |
666 | #endif | |
667 | if ((secFlags & CIFSSEC_MAY_SIGN) == 0) { | |
668 | /* MUST_SIGN already includes the MAY_SIGN FLAG | |
669 | so if this is zero it means that signing is disabled */ | |
670 | cFYI(1, ("Signing disabled")); | |
671 | if (server->secMode & SECMODE_SIGN_REQUIRED) { | |
672 | cERROR(1, ("Server requires " | |
673 | "packet signing to be enabled in " | |
674 | "/proc/fs/cifs/SecurityFlags.")); | |
675 | rc = -EOPNOTSUPP; | |
676 | } | |
677 | server->secMode &= | |
678 | ~(SECMODE_SIGN_ENABLED | SECMODE_SIGN_REQUIRED); | |
679 | } else if ((secFlags & CIFSSEC_MUST_SIGN) == CIFSSEC_MUST_SIGN) { | |
680 | /* signing required */ | |
681 | cFYI(1, ("Must sign - secFlags 0x%x", secFlags)); | |
682 | if ((server->secMode & | |
683 | (SECMODE_SIGN_ENABLED | SECMODE_SIGN_REQUIRED)) == 0) { | |
684 | cERROR(1, | |
685 | ("signing required but server lacks support")); | |
686 | rc = -EOPNOTSUPP; | |
687 | } else | |
688 | server->secMode |= SECMODE_SIGN_REQUIRED; | |
689 | } else { | |
690 | /* signing optional ie CIFSSEC_MAY_SIGN */ | |
691 | if ((server->secMode & SECMODE_SIGN_REQUIRED) == 0) | |
692 | server->secMode &= | |
693 | ~(SECMODE_SIGN_ENABLED | SECMODE_SIGN_REQUIRED); | |
694 | } | |
695 | ||
696 | neg_err_exit: | |
697 | cifs_buf_release(pSMB); | |
698 | ||
699 | cFYI(1, ("negprot rc %d", rc)); | |
700 | return rc; | |
701 | } | |
702 | ||
703 | int | |
704 | CIFSSMBTDis(const int xid, struct cifsTconInfo *tcon) | |
705 | { | |
706 | struct smb_hdr *smb_buffer; | |
707 | int rc = 0; | |
708 | ||
709 | cFYI(1, ("In tree disconnect")); | |
710 | /* | |
711 | * If last user of the connection and | |
712 | * connection alive - disconnect it | |
713 | * If this is the last connection on the server session disconnect it | |
714 | * (and inside session disconnect we should check if tcp socket needs | |
715 | * to be freed and kernel thread woken up). | |
716 | */ | |
717 | if (tcon) | |
718 | down(&tcon->tconSem); | |
719 | else | |
720 | return -EIO; | |
721 | ||
722 | atomic_dec(&tcon->useCount); | |
723 | if (atomic_read(&tcon->useCount) > 0) { | |
724 | up(&tcon->tconSem); | |
725 | return -EBUSY; | |
726 | } | |
727 | ||
728 | /* No need to return error on this operation if tid invalidated and | |
729 | closed on server already e.g. due to tcp session crashing */ | |
730 | if (tcon->tidStatus == CifsNeedReconnect) { | |
731 | up(&tcon->tconSem); | |
732 | return 0; | |
733 | } | |
734 | ||
735 | if ((tcon->ses == NULL) || (tcon->ses->server == NULL)) { | |
736 | up(&tcon->tconSem); | |
737 | return -EIO; | |
738 | } | |
739 | rc = small_smb_init(SMB_COM_TREE_DISCONNECT, 0, tcon, | |
740 | (void **)&smb_buffer); | |
741 | if (rc) { | |
742 | up(&tcon->tconSem); | |
743 | return rc; | |
744 | } | |
745 | ||
746 | rc = SendReceiveNoRsp(xid, tcon->ses, smb_buffer, 0); | |
747 | if (rc) | |
748 | cFYI(1, ("Tree disconnect failed %d", rc)); | |
749 | ||
750 | up(&tcon->tconSem); | |
751 | ||
752 | /* No need to return error on this operation if tid invalidated and | |
753 | closed on server already e.g. due to tcp session crashing */ | |
754 | if (rc == -EAGAIN) | |
755 | rc = 0; | |
756 | ||
757 | return rc; | |
758 | } | |
759 | ||
760 | int | |
761 | CIFSSMBLogoff(const int xid, struct cifsSesInfo *ses) | |
762 | { | |
763 | LOGOFF_ANDX_REQ *pSMB; | |
764 | int rc = 0; | |
765 | ||
766 | cFYI(1, ("In SMBLogoff for session disconnect")); | |
767 | if (ses) | |
768 | down(&ses->sesSem); | |
769 | else | |
770 | return -EIO; | |
771 | ||
772 | atomic_dec(&ses->inUse); | |
773 | if (atomic_read(&ses->inUse) > 0) { | |
774 | up(&ses->sesSem); | |
775 | return -EBUSY; | |
776 | } | |
777 | rc = small_smb_init(SMB_COM_LOGOFF_ANDX, 2, NULL, (void **)&pSMB); | |
778 | if (rc) { | |
779 | up(&ses->sesSem); | |
780 | return rc; | |
781 | } | |
782 | ||
783 | if (ses->server) { | |
784 | pSMB->hdr.Mid = GetNextMid(ses->server); | |
785 | ||
786 | if (ses->server->secMode & | |
787 | (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) | |
788 | pSMB->hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE; | |
789 | } | |
790 | ||
791 | pSMB->hdr.Uid = ses->Suid; | |
792 | ||
793 | pSMB->AndXCommand = 0xFF; | |
794 | rc = SendReceiveNoRsp(xid, ses, (struct smb_hdr *) pSMB, 0); | |
795 | if (ses->server) { | |
796 | atomic_dec(&ses->server->socketUseCount); | |
797 | if (atomic_read(&ses->server->socketUseCount) == 0) { | |
798 | spin_lock(&GlobalMid_Lock); | |
799 | ses->server->tcpStatus = CifsExiting; | |
800 | spin_unlock(&GlobalMid_Lock); | |
801 | rc = -ESHUTDOWN; | |
802 | } | |
803 | } | |
804 | up(&ses->sesSem); | |
805 | ||
806 | /* if session dead then we do not need to do ulogoff, | |
807 | since server closed smb session, no sense reporting | |
808 | error */ | |
809 | if (rc == -EAGAIN) | |
810 | rc = 0; | |
811 | return rc; | |
812 | } | |
813 | ||
814 | int | |
815 | CIFSPOSIXDelFile(const int xid, struct cifsTconInfo *tcon, const char *fileName, | |
816 | __u16 type, const struct nls_table *nls_codepage, int remap) | |
817 | { | |
818 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
819 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
820 | struct unlink_psx_rq *pRqD; | |
821 | int name_len; | |
822 | int rc = 0; | |
823 | int bytes_returned = 0; | |
824 | __u16 params, param_offset, offset, byte_count; | |
825 | ||
826 | cFYI(1, ("In POSIX delete")); | |
827 | PsxDelete: | |
828 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
829 | (void **) &pSMBr); | |
830 | if (rc) | |
831 | return rc; | |
832 | ||
833 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
834 | name_len = | |
835 | cifsConvertToUCS((__le16 *) pSMB->FileName, fileName, | |
836 | PATH_MAX, nls_codepage, remap); | |
837 | name_len++; /* trailing null */ | |
838 | name_len *= 2; | |
839 | } else { /* BB add path length overrun check */ | |
840 | name_len = strnlen(fileName, PATH_MAX); | |
841 | name_len++; /* trailing null */ | |
842 | strncpy(pSMB->FileName, fileName, name_len); | |
843 | } | |
844 | ||
845 | params = 6 + name_len; | |
846 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
847 | pSMB->MaxDataCount = 0; /* BB double check this with jra */ | |
848 | pSMB->MaxSetupCount = 0; | |
849 | pSMB->Reserved = 0; | |
850 | pSMB->Flags = 0; | |
851 | pSMB->Timeout = 0; | |
852 | pSMB->Reserved2 = 0; | |
853 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
854 | InformationLevel) - 4; | |
855 | offset = param_offset + params; | |
856 | ||
857 | /* Setup pointer to Request Data (inode type) */ | |
858 | pRqD = (struct unlink_psx_rq *)(((char *)&pSMB->hdr.Protocol) + offset); | |
859 | pRqD->type = cpu_to_le16(type); | |
860 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
861 | pSMB->DataOffset = cpu_to_le16(offset); | |
862 | pSMB->SetupCount = 1; | |
863 | pSMB->Reserved3 = 0; | |
864 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
865 | byte_count = 3 /* pad */ + params + sizeof(struct unlink_psx_rq); | |
866 | ||
867 | pSMB->DataCount = cpu_to_le16(sizeof(struct unlink_psx_rq)); | |
868 | pSMB->TotalDataCount = cpu_to_le16(sizeof(struct unlink_psx_rq)); | |
869 | pSMB->ParameterCount = cpu_to_le16(params); | |
870 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
871 | pSMB->InformationLevel = cpu_to_le16(SMB_POSIX_UNLINK); | |
872 | pSMB->Reserved4 = 0; | |
873 | pSMB->hdr.smb_buf_length += byte_count; | |
874 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
875 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
876 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
877 | if (rc) | |
878 | cFYI(1, ("Posix delete returned %d", rc)); | |
879 | cifs_buf_release(pSMB); | |
880 | ||
881 | cifs_stats_inc(&tcon->num_deletes); | |
882 | ||
883 | if (rc == -EAGAIN) | |
884 | goto PsxDelete; | |
885 | ||
886 | return rc; | |
887 | } | |
888 | ||
889 | int | |
890 | CIFSSMBDelFile(const int xid, struct cifsTconInfo *tcon, const char *fileName, | |
891 | const struct nls_table *nls_codepage, int remap) | |
892 | { | |
893 | DELETE_FILE_REQ *pSMB = NULL; | |
894 | DELETE_FILE_RSP *pSMBr = NULL; | |
895 | int rc = 0; | |
896 | int bytes_returned; | |
897 | int name_len; | |
898 | ||
899 | DelFileRetry: | |
900 | rc = smb_init(SMB_COM_DELETE, 1, tcon, (void **) &pSMB, | |
901 | (void **) &pSMBr); | |
902 | if (rc) | |
903 | return rc; | |
904 | ||
905 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
906 | name_len = | |
907 | cifsConvertToUCS((__le16 *) pSMB->fileName, fileName, | |
908 | PATH_MAX, nls_codepage, remap); | |
909 | name_len++; /* trailing null */ | |
910 | name_len *= 2; | |
911 | } else { /* BB improve check for buffer overruns BB */ | |
912 | name_len = strnlen(fileName, PATH_MAX); | |
913 | name_len++; /* trailing null */ | |
914 | strncpy(pSMB->fileName, fileName, name_len); | |
915 | } | |
916 | pSMB->SearchAttributes = | |
917 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM); | |
918 | pSMB->BufferFormat = 0x04; | |
919 | pSMB->hdr.smb_buf_length += name_len + 1; | |
920 | pSMB->ByteCount = cpu_to_le16(name_len + 1); | |
921 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
922 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
923 | cifs_stats_inc(&tcon->num_deletes); | |
924 | if (rc) | |
925 | cFYI(1, ("Error in RMFile = %d", rc)); | |
926 | ||
927 | cifs_buf_release(pSMB); | |
928 | if (rc == -EAGAIN) | |
929 | goto DelFileRetry; | |
930 | ||
931 | return rc; | |
932 | } | |
933 | ||
934 | int | |
935 | CIFSSMBRmDir(const int xid, struct cifsTconInfo *tcon, const char *dirName, | |
936 | const struct nls_table *nls_codepage, int remap) | |
937 | { | |
938 | DELETE_DIRECTORY_REQ *pSMB = NULL; | |
939 | DELETE_DIRECTORY_RSP *pSMBr = NULL; | |
940 | int rc = 0; | |
941 | int bytes_returned; | |
942 | int name_len; | |
943 | ||
944 | cFYI(1, ("In CIFSSMBRmDir")); | |
945 | RmDirRetry: | |
946 | rc = smb_init(SMB_COM_DELETE_DIRECTORY, 0, tcon, (void **) &pSMB, | |
947 | (void **) &pSMBr); | |
948 | if (rc) | |
949 | return rc; | |
950 | ||
951 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
952 | name_len = cifsConvertToUCS((__le16 *) pSMB->DirName, dirName, | |
953 | PATH_MAX, nls_codepage, remap); | |
954 | name_len++; /* trailing null */ | |
955 | name_len *= 2; | |
956 | } else { /* BB improve check for buffer overruns BB */ | |
957 | name_len = strnlen(dirName, PATH_MAX); | |
958 | name_len++; /* trailing null */ | |
959 | strncpy(pSMB->DirName, dirName, name_len); | |
960 | } | |
961 | ||
962 | pSMB->BufferFormat = 0x04; | |
963 | pSMB->hdr.smb_buf_length += name_len + 1; | |
964 | pSMB->ByteCount = cpu_to_le16(name_len + 1); | |
965 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
966 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
967 | cifs_stats_inc(&tcon->num_rmdirs); | |
968 | if (rc) | |
969 | cFYI(1, ("Error in RMDir = %d", rc)); | |
970 | ||
971 | cifs_buf_release(pSMB); | |
972 | if (rc == -EAGAIN) | |
973 | goto RmDirRetry; | |
974 | return rc; | |
975 | } | |
976 | ||
977 | int | |
978 | CIFSSMBMkDir(const int xid, struct cifsTconInfo *tcon, | |
979 | const char *name, const struct nls_table *nls_codepage, int remap) | |
980 | { | |
981 | int rc = 0; | |
982 | CREATE_DIRECTORY_REQ *pSMB = NULL; | |
983 | CREATE_DIRECTORY_RSP *pSMBr = NULL; | |
984 | int bytes_returned; | |
985 | int name_len; | |
986 | ||
987 | cFYI(1, ("In CIFSSMBMkDir")); | |
988 | MkDirRetry: | |
989 | rc = smb_init(SMB_COM_CREATE_DIRECTORY, 0, tcon, (void **) &pSMB, | |
990 | (void **) &pSMBr); | |
991 | if (rc) | |
992 | return rc; | |
993 | ||
994 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
995 | name_len = cifsConvertToUCS((__le16 *) pSMB->DirName, name, | |
996 | PATH_MAX, nls_codepage, remap); | |
997 | name_len++; /* trailing null */ | |
998 | name_len *= 2; | |
999 | } else { /* BB improve check for buffer overruns BB */ | |
1000 | name_len = strnlen(name, PATH_MAX); | |
1001 | name_len++; /* trailing null */ | |
1002 | strncpy(pSMB->DirName, name, name_len); | |
1003 | } | |
1004 | ||
1005 | pSMB->BufferFormat = 0x04; | |
1006 | pSMB->hdr.smb_buf_length += name_len + 1; | |
1007 | pSMB->ByteCount = cpu_to_le16(name_len + 1); | |
1008 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
1009 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
1010 | cifs_stats_inc(&tcon->num_mkdirs); | |
1011 | if (rc) | |
1012 | cFYI(1, ("Error in Mkdir = %d", rc)); | |
1013 | ||
1014 | cifs_buf_release(pSMB); | |
1015 | if (rc == -EAGAIN) | |
1016 | goto MkDirRetry; | |
1017 | return rc; | |
1018 | } | |
1019 | ||
1020 | int | |
1021 | CIFSPOSIXCreate(const int xid, struct cifsTconInfo *tcon, __u32 posix_flags, | |
1022 | __u64 mode, __u16 *netfid, FILE_UNIX_BASIC_INFO *pRetData, | |
1023 | __u32 *pOplock, const char *name, | |
1024 | const struct nls_table *nls_codepage, int remap) | |
1025 | { | |
1026 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
1027 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
1028 | int name_len; | |
1029 | int rc = 0; | |
1030 | int bytes_returned = 0; | |
1031 | __u16 params, param_offset, offset, byte_count, count; | |
1032 | OPEN_PSX_REQ *pdata; | |
1033 | OPEN_PSX_RSP *psx_rsp; | |
1034 | ||
1035 | cFYI(1, ("In POSIX Create")); | |
1036 | PsxCreat: | |
1037 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
1038 | (void **) &pSMBr); | |
1039 | if (rc) | |
1040 | return rc; | |
1041 | ||
1042 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1043 | name_len = | |
1044 | cifsConvertToUCS((__le16 *) pSMB->FileName, name, | |
1045 | PATH_MAX, nls_codepage, remap); | |
1046 | name_len++; /* trailing null */ | |
1047 | name_len *= 2; | |
1048 | } else { /* BB improve the check for buffer overruns BB */ | |
1049 | name_len = strnlen(name, PATH_MAX); | |
1050 | name_len++; /* trailing null */ | |
1051 | strncpy(pSMB->FileName, name, name_len); | |
1052 | } | |
1053 | ||
1054 | params = 6 + name_len; | |
1055 | count = sizeof(OPEN_PSX_REQ); | |
1056 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
1057 | pSMB->MaxDataCount = cpu_to_le16(1000); /* large enough */ | |
1058 | pSMB->MaxSetupCount = 0; | |
1059 | pSMB->Reserved = 0; | |
1060 | pSMB->Flags = 0; | |
1061 | pSMB->Timeout = 0; | |
1062 | pSMB->Reserved2 = 0; | |
1063 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
1064 | InformationLevel) - 4; | |
1065 | offset = param_offset + params; | |
1066 | pdata = (OPEN_PSX_REQ *)(((char *)&pSMB->hdr.Protocol) + offset); | |
1067 | pdata->Level = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC); | |
1068 | pdata->Permissions = cpu_to_le64(mode); | |
1069 | pdata->PosixOpenFlags = cpu_to_le32(posix_flags); | |
1070 | pdata->OpenFlags = cpu_to_le32(*pOplock); | |
1071 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
1072 | pSMB->DataOffset = cpu_to_le16(offset); | |
1073 | pSMB->SetupCount = 1; | |
1074 | pSMB->Reserved3 = 0; | |
1075 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
1076 | byte_count = 3 /* pad */ + params + count; | |
1077 | ||
1078 | pSMB->DataCount = cpu_to_le16(count); | |
1079 | pSMB->ParameterCount = cpu_to_le16(params); | |
1080 | pSMB->TotalDataCount = pSMB->DataCount; | |
1081 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
1082 | pSMB->InformationLevel = cpu_to_le16(SMB_POSIX_OPEN); | |
1083 | pSMB->Reserved4 = 0; | |
1084 | pSMB->hdr.smb_buf_length += byte_count; | |
1085 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
1086 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
1087 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
1088 | if (rc) { | |
1089 | cFYI(1, ("Posix create returned %d", rc)); | |
1090 | goto psx_create_err; | |
1091 | } | |
1092 | ||
1093 | cFYI(1, ("copying inode info")); | |
1094 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
1095 | ||
1096 | if (rc || (pSMBr->ByteCount < sizeof(OPEN_PSX_RSP))) { | |
1097 | rc = -EIO; /* bad smb */ | |
1098 | goto psx_create_err; | |
1099 | } | |
1100 | ||
1101 | /* copy return information to pRetData */ | |
1102 | psx_rsp = (OPEN_PSX_RSP *)((char *) &pSMBr->hdr.Protocol | |
1103 | + le16_to_cpu(pSMBr->t2.DataOffset)); | |
1104 | ||
1105 | *pOplock = le16_to_cpu(psx_rsp->OplockFlags); | |
1106 | if (netfid) | |
1107 | *netfid = psx_rsp->Fid; /* cifs fid stays in le */ | |
1108 | /* Let caller know file was created so we can set the mode. */ | |
1109 | /* Do we care about the CreateAction in any other cases? */ | |
1110 | if (cpu_to_le32(FILE_CREATE) == psx_rsp->CreateAction) | |
1111 | *pOplock |= CIFS_CREATE_ACTION; | |
1112 | /* check to make sure response data is there */ | |
1113 | if (psx_rsp->ReturnedLevel != cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC)) { | |
1114 | pRetData->Type = cpu_to_le32(-1); /* unknown */ | |
1115 | cFYI(DBG2, ("unknown type")); | |
1116 | } else { | |
1117 | if (pSMBr->ByteCount < sizeof(OPEN_PSX_RSP) | |
1118 | + sizeof(FILE_UNIX_BASIC_INFO)) { | |
1119 | cERROR(1, ("Open response data too small")); | |
1120 | pRetData->Type = cpu_to_le32(-1); | |
1121 | goto psx_create_err; | |
1122 | } | |
1123 | memcpy((char *) pRetData, | |
1124 | (char *)psx_rsp + sizeof(OPEN_PSX_RSP), | |
1125 | sizeof(FILE_UNIX_BASIC_INFO)); | |
1126 | } | |
1127 | ||
1128 | psx_create_err: | |
1129 | cifs_buf_release(pSMB); | |
1130 | ||
1131 | cifs_stats_inc(&tcon->num_mkdirs); | |
1132 | ||
1133 | if (rc == -EAGAIN) | |
1134 | goto PsxCreat; | |
1135 | ||
1136 | return rc; | |
1137 | } | |
1138 | ||
1139 | static __u16 convert_disposition(int disposition) | |
1140 | { | |
1141 | __u16 ofun = 0; | |
1142 | ||
1143 | switch (disposition) { | |
1144 | case FILE_SUPERSEDE: | |
1145 | ofun = SMBOPEN_OCREATE | SMBOPEN_OTRUNC; | |
1146 | break; | |
1147 | case FILE_OPEN: | |
1148 | ofun = SMBOPEN_OAPPEND; | |
1149 | break; | |
1150 | case FILE_CREATE: | |
1151 | ofun = SMBOPEN_OCREATE; | |
1152 | break; | |
1153 | case FILE_OPEN_IF: | |
1154 | ofun = SMBOPEN_OCREATE | SMBOPEN_OAPPEND; | |
1155 | break; | |
1156 | case FILE_OVERWRITE: | |
1157 | ofun = SMBOPEN_OTRUNC; | |
1158 | break; | |
1159 | case FILE_OVERWRITE_IF: | |
1160 | ofun = SMBOPEN_OCREATE | SMBOPEN_OTRUNC; | |
1161 | break; | |
1162 | default: | |
1163 | cFYI(1, ("unknown disposition %d", disposition)); | |
1164 | ofun = SMBOPEN_OAPPEND; /* regular open */ | |
1165 | } | |
1166 | return ofun; | |
1167 | } | |
1168 | ||
1169 | int | |
1170 | SMBLegacyOpen(const int xid, struct cifsTconInfo *tcon, | |
1171 | const char *fileName, const int openDisposition, | |
1172 | const int access_flags, const int create_options, __u16 *netfid, | |
1173 | int *pOplock, FILE_ALL_INFO *pfile_info, | |
1174 | const struct nls_table *nls_codepage, int remap) | |
1175 | { | |
1176 | int rc = -EACCES; | |
1177 | OPENX_REQ *pSMB = NULL; | |
1178 | OPENX_RSP *pSMBr = NULL; | |
1179 | int bytes_returned; | |
1180 | int name_len; | |
1181 | __u16 count; | |
1182 | ||
1183 | OldOpenRetry: | |
1184 | rc = smb_init(SMB_COM_OPEN_ANDX, 15, tcon, (void **) &pSMB, | |
1185 | (void **) &pSMBr); | |
1186 | if (rc) | |
1187 | return rc; | |
1188 | ||
1189 | pSMB->AndXCommand = 0xFF; /* none */ | |
1190 | ||
1191 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1192 | count = 1; /* account for one byte pad to word boundary */ | |
1193 | name_len = | |
1194 | cifsConvertToUCS((__le16 *) (pSMB->fileName + 1), | |
1195 | fileName, PATH_MAX, nls_codepage, remap); | |
1196 | name_len++; /* trailing null */ | |
1197 | name_len *= 2; | |
1198 | } else { /* BB improve check for buffer overruns BB */ | |
1199 | count = 0; /* no pad */ | |
1200 | name_len = strnlen(fileName, PATH_MAX); | |
1201 | name_len++; /* trailing null */ | |
1202 | strncpy(pSMB->fileName, fileName, name_len); | |
1203 | } | |
1204 | if (*pOplock & REQ_OPLOCK) | |
1205 | pSMB->OpenFlags = cpu_to_le16(REQ_OPLOCK); | |
1206 | else if (*pOplock & REQ_BATCHOPLOCK) | |
1207 | pSMB->OpenFlags = cpu_to_le16(REQ_BATCHOPLOCK); | |
1208 | ||
1209 | pSMB->OpenFlags |= cpu_to_le16(REQ_MORE_INFO); | |
1210 | /* BB fixme add conversion for access_flags to bits 0 - 2 of mode */ | |
1211 | /* 0 = read | |
1212 | 1 = write | |
1213 | 2 = rw | |
1214 | 3 = execute | |
1215 | */ | |
1216 | pSMB->Mode = cpu_to_le16(2); | |
1217 | pSMB->Mode |= cpu_to_le16(0x40); /* deny none */ | |
1218 | /* set file as system file if special file such | |
1219 | as fifo and server expecting SFU style and | |
1220 | no Unix extensions */ | |
1221 | ||
1222 | if (create_options & CREATE_OPTION_SPECIAL) | |
1223 | pSMB->FileAttributes = cpu_to_le16(ATTR_SYSTEM); | |
1224 | else /* BB FIXME BB */ | |
1225 | pSMB->FileAttributes = cpu_to_le16(0/*ATTR_NORMAL*/); | |
1226 | ||
1227 | if (create_options & CREATE_OPTION_READONLY) | |
1228 | pSMB->FileAttributes |= cpu_to_le16(ATTR_READONLY); | |
1229 | ||
1230 | /* BB FIXME BB */ | |
1231 | /* pSMB->CreateOptions = cpu_to_le32(create_options & | |
1232 | CREATE_OPTIONS_MASK); */ | |
1233 | /* BB FIXME END BB */ | |
1234 | ||
1235 | pSMB->Sattr = cpu_to_le16(ATTR_HIDDEN | ATTR_SYSTEM | ATTR_DIRECTORY); | |
1236 | pSMB->OpenFunction = cpu_to_le16(convert_disposition(openDisposition)); | |
1237 | count += name_len; | |
1238 | pSMB->hdr.smb_buf_length += count; | |
1239 | ||
1240 | pSMB->ByteCount = cpu_to_le16(count); | |
1241 | /* long_op set to 1 to allow for oplock break timeouts */ | |
1242 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
1243 | (struct smb_hdr *)pSMBr, &bytes_returned, CIFS_LONG_OP); | |
1244 | cifs_stats_inc(&tcon->num_opens); | |
1245 | if (rc) { | |
1246 | cFYI(1, ("Error in Open = %d", rc)); | |
1247 | } else { | |
1248 | /* BB verify if wct == 15 */ | |
1249 | ||
1250 | /* *pOplock = pSMBr->OplockLevel; */ /* BB take from action field BB */ | |
1251 | ||
1252 | *netfid = pSMBr->Fid; /* cifs fid stays in le */ | |
1253 | /* Let caller know file was created so we can set the mode. */ | |
1254 | /* Do we care about the CreateAction in any other cases? */ | |
1255 | /* BB FIXME BB */ | |
1256 | /* if (cpu_to_le32(FILE_CREATE) == pSMBr->CreateAction) | |
1257 | *pOplock |= CIFS_CREATE_ACTION; */ | |
1258 | /* BB FIXME END */ | |
1259 | ||
1260 | if (pfile_info) { | |
1261 | pfile_info->CreationTime = 0; /* BB convert CreateTime*/ | |
1262 | pfile_info->LastAccessTime = 0; /* BB fixme */ | |
1263 | pfile_info->LastWriteTime = 0; /* BB fixme */ | |
1264 | pfile_info->ChangeTime = 0; /* BB fixme */ | |
1265 | pfile_info->Attributes = | |
1266 | cpu_to_le32(le16_to_cpu(pSMBr->FileAttributes)); | |
1267 | /* the file_info buf is endian converted by caller */ | |
1268 | pfile_info->AllocationSize = | |
1269 | cpu_to_le64(le32_to_cpu(pSMBr->EndOfFile)); | |
1270 | pfile_info->EndOfFile = pfile_info->AllocationSize; | |
1271 | pfile_info->NumberOfLinks = cpu_to_le32(1); | |
1272 | } | |
1273 | } | |
1274 | ||
1275 | cifs_buf_release(pSMB); | |
1276 | if (rc == -EAGAIN) | |
1277 | goto OldOpenRetry; | |
1278 | return rc; | |
1279 | } | |
1280 | ||
1281 | int | |
1282 | CIFSSMBOpen(const int xid, struct cifsTconInfo *tcon, | |
1283 | const char *fileName, const int openDisposition, | |
1284 | const int access_flags, const int create_options, __u16 *netfid, | |
1285 | int *pOplock, FILE_ALL_INFO *pfile_info, | |
1286 | const struct nls_table *nls_codepage, int remap) | |
1287 | { | |
1288 | int rc = -EACCES; | |
1289 | OPEN_REQ *pSMB = NULL; | |
1290 | OPEN_RSP *pSMBr = NULL; | |
1291 | int bytes_returned; | |
1292 | int name_len; | |
1293 | __u16 count; | |
1294 | ||
1295 | openRetry: | |
1296 | rc = smb_init(SMB_COM_NT_CREATE_ANDX, 24, tcon, (void **) &pSMB, | |
1297 | (void **) &pSMBr); | |
1298 | if (rc) | |
1299 | return rc; | |
1300 | ||
1301 | pSMB->AndXCommand = 0xFF; /* none */ | |
1302 | ||
1303 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1304 | count = 1; /* account for one byte pad to word boundary */ | |
1305 | name_len = | |
1306 | cifsConvertToUCS((__le16 *) (pSMB->fileName + 1), | |
1307 | fileName, PATH_MAX, nls_codepage, remap); | |
1308 | name_len++; /* trailing null */ | |
1309 | name_len *= 2; | |
1310 | pSMB->NameLength = cpu_to_le16(name_len); | |
1311 | } else { /* BB improve check for buffer overruns BB */ | |
1312 | count = 0; /* no pad */ | |
1313 | name_len = strnlen(fileName, PATH_MAX); | |
1314 | name_len++; /* trailing null */ | |
1315 | pSMB->NameLength = cpu_to_le16(name_len); | |
1316 | strncpy(pSMB->fileName, fileName, name_len); | |
1317 | } | |
1318 | if (*pOplock & REQ_OPLOCK) | |
1319 | pSMB->OpenFlags = cpu_to_le32(REQ_OPLOCK); | |
1320 | else if (*pOplock & REQ_BATCHOPLOCK) | |
1321 | pSMB->OpenFlags = cpu_to_le32(REQ_BATCHOPLOCK); | |
1322 | pSMB->DesiredAccess = cpu_to_le32(access_flags); | |
1323 | pSMB->AllocationSize = 0; | |
1324 | /* set file as system file if special file such | |
1325 | as fifo and server expecting SFU style and | |
1326 | no Unix extensions */ | |
1327 | if (create_options & CREATE_OPTION_SPECIAL) | |
1328 | pSMB->FileAttributes = cpu_to_le32(ATTR_SYSTEM); | |
1329 | else | |
1330 | pSMB->FileAttributes = cpu_to_le32(ATTR_NORMAL); | |
1331 | ||
1332 | /* XP does not handle ATTR_POSIX_SEMANTICS */ | |
1333 | /* but it helps speed up case sensitive checks for other | |
1334 | servers such as Samba */ | |
1335 | if (tcon->ses->capabilities & CAP_UNIX) | |
1336 | pSMB->FileAttributes |= cpu_to_le32(ATTR_POSIX_SEMANTICS); | |
1337 | ||
1338 | if (create_options & CREATE_OPTION_READONLY) | |
1339 | pSMB->FileAttributes |= cpu_to_le32(ATTR_READONLY); | |
1340 | ||
1341 | pSMB->ShareAccess = cpu_to_le32(FILE_SHARE_ALL); | |
1342 | pSMB->CreateDisposition = cpu_to_le32(openDisposition); | |
1343 | pSMB->CreateOptions = cpu_to_le32(create_options & CREATE_OPTIONS_MASK); | |
1344 | /* BB Expirement with various impersonation levels and verify */ | |
1345 | pSMB->ImpersonationLevel = cpu_to_le32(SECURITY_IMPERSONATION); | |
1346 | pSMB->SecurityFlags = | |
1347 | SECURITY_CONTEXT_TRACKING | SECURITY_EFFECTIVE_ONLY; | |
1348 | ||
1349 | count += name_len; | |
1350 | pSMB->hdr.smb_buf_length += count; | |
1351 | ||
1352 | pSMB->ByteCount = cpu_to_le16(count); | |
1353 | /* long_op set to 1 to allow for oplock break timeouts */ | |
1354 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
1355 | (struct smb_hdr *)pSMBr, &bytes_returned, CIFS_LONG_OP); | |
1356 | cifs_stats_inc(&tcon->num_opens); | |
1357 | if (rc) { | |
1358 | cFYI(1, ("Error in Open = %d", rc)); | |
1359 | } else { | |
1360 | *pOplock = pSMBr->OplockLevel; /* 1 byte no need to le_to_cpu */ | |
1361 | *netfid = pSMBr->Fid; /* cifs fid stays in le */ | |
1362 | /* Let caller know file was created so we can set the mode. */ | |
1363 | /* Do we care about the CreateAction in any other cases? */ | |
1364 | if (cpu_to_le32(FILE_CREATE) == pSMBr->CreateAction) | |
1365 | *pOplock |= CIFS_CREATE_ACTION; | |
1366 | if (pfile_info) { | |
1367 | memcpy((char *)pfile_info, (char *)&pSMBr->CreationTime, | |
1368 | 36 /* CreationTime to Attributes */); | |
1369 | /* the file_info buf is endian converted by caller */ | |
1370 | pfile_info->AllocationSize = pSMBr->AllocationSize; | |
1371 | pfile_info->EndOfFile = pSMBr->EndOfFile; | |
1372 | pfile_info->NumberOfLinks = cpu_to_le32(1); | |
1373 | } | |
1374 | } | |
1375 | ||
1376 | cifs_buf_release(pSMB); | |
1377 | if (rc == -EAGAIN) | |
1378 | goto openRetry; | |
1379 | return rc; | |
1380 | } | |
1381 | ||
1382 | int | |
1383 | CIFSSMBRead(const int xid, struct cifsTconInfo *tcon, const int netfid, | |
1384 | const unsigned int count, const __u64 lseek, unsigned int *nbytes, | |
1385 | char **buf, int *pbuf_type) | |
1386 | { | |
1387 | int rc = -EACCES; | |
1388 | READ_REQ *pSMB = NULL; | |
1389 | READ_RSP *pSMBr = NULL; | |
1390 | char *pReadData = NULL; | |
1391 | int wct; | |
1392 | int resp_buf_type = 0; | |
1393 | struct kvec iov[1]; | |
1394 | ||
1395 | cFYI(1, ("Reading %d bytes on fid %d", count, netfid)); | |
1396 | if (tcon->ses->capabilities & CAP_LARGE_FILES) | |
1397 | wct = 12; | |
1398 | else | |
1399 | wct = 10; /* old style read */ | |
1400 | ||
1401 | *nbytes = 0; | |
1402 | rc = small_smb_init(SMB_COM_READ_ANDX, wct, tcon, (void **) &pSMB); | |
1403 | if (rc) | |
1404 | return rc; | |
1405 | ||
1406 | /* tcon and ses pointer are checked in smb_init */ | |
1407 | if (tcon->ses->server == NULL) | |
1408 | return -ECONNABORTED; | |
1409 | ||
1410 | pSMB->AndXCommand = 0xFF; /* none */ | |
1411 | pSMB->Fid = netfid; | |
1412 | pSMB->OffsetLow = cpu_to_le32(lseek & 0xFFFFFFFF); | |
1413 | if (wct == 12) | |
1414 | pSMB->OffsetHigh = cpu_to_le32(lseek >> 32); | |
1415 | else if ((lseek >> 32) > 0) /* can not handle this big offset for old */ | |
1416 | return -EIO; | |
1417 | ||
1418 | pSMB->Remaining = 0; | |
1419 | pSMB->MaxCount = cpu_to_le16(count & 0xFFFF); | |
1420 | pSMB->MaxCountHigh = cpu_to_le32(count >> 16); | |
1421 | if (wct == 12) | |
1422 | pSMB->ByteCount = 0; /* no need to do le conversion since 0 */ | |
1423 | else { | |
1424 | /* old style read */ | |
1425 | struct smb_com_readx_req *pSMBW = | |
1426 | (struct smb_com_readx_req *)pSMB; | |
1427 | pSMBW->ByteCount = 0; | |
1428 | } | |
1429 | ||
1430 | iov[0].iov_base = (char *)pSMB; | |
1431 | iov[0].iov_len = pSMB->hdr.smb_buf_length + 4; | |
1432 | rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovecs */, | |
1433 | &resp_buf_type, CIFS_STD_OP | CIFS_LOG_ERROR); | |
1434 | cifs_stats_inc(&tcon->num_reads); | |
1435 | pSMBr = (READ_RSP *)iov[0].iov_base; | |
1436 | if (rc) { | |
1437 | cERROR(1, ("Send error in read = %d", rc)); | |
1438 | } else { | |
1439 | int data_length = le16_to_cpu(pSMBr->DataLengthHigh); | |
1440 | data_length = data_length << 16; | |
1441 | data_length += le16_to_cpu(pSMBr->DataLength); | |
1442 | *nbytes = data_length; | |
1443 | ||
1444 | /*check that DataLength would not go beyond end of SMB */ | |
1445 | if ((data_length > CIFSMaxBufSize) | |
1446 | || (data_length > count)) { | |
1447 | cFYI(1, ("bad length %d for count %d", | |
1448 | data_length, count)); | |
1449 | rc = -EIO; | |
1450 | *nbytes = 0; | |
1451 | } else { | |
1452 | pReadData = (char *) (&pSMBr->hdr.Protocol) + | |
1453 | le16_to_cpu(pSMBr->DataOffset); | |
1454 | /* if (rc = copy_to_user(buf, pReadData, data_length)) { | |
1455 | cERROR(1,("Faulting on read rc = %d",rc)); | |
1456 | rc = -EFAULT; | |
1457 | }*/ /* can not use copy_to_user when using page cache*/ | |
1458 | if (*buf) | |
1459 | memcpy(*buf, pReadData, data_length); | |
1460 | } | |
1461 | } | |
1462 | ||
1463 | /* cifs_small_buf_release(pSMB); */ /* Freed earlier now in SendReceive2 */ | |
1464 | if (*buf) { | |
1465 | if (resp_buf_type == CIFS_SMALL_BUFFER) | |
1466 | cifs_small_buf_release(iov[0].iov_base); | |
1467 | else if (resp_buf_type == CIFS_LARGE_BUFFER) | |
1468 | cifs_buf_release(iov[0].iov_base); | |
1469 | } else if (resp_buf_type != CIFS_NO_BUFFER) { | |
1470 | /* return buffer to caller to free */ | |
1471 | *buf = iov[0].iov_base; | |
1472 | if (resp_buf_type == CIFS_SMALL_BUFFER) | |
1473 | *pbuf_type = CIFS_SMALL_BUFFER; | |
1474 | else if (resp_buf_type == CIFS_LARGE_BUFFER) | |
1475 | *pbuf_type = CIFS_LARGE_BUFFER; | |
1476 | } /* else no valid buffer on return - leave as null */ | |
1477 | ||
1478 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
1479 | since file handle passed in no longer valid */ | |
1480 | return rc; | |
1481 | } | |
1482 | ||
1483 | ||
1484 | int | |
1485 | CIFSSMBWrite(const int xid, struct cifsTconInfo *tcon, | |
1486 | const int netfid, const unsigned int count, | |
1487 | const __u64 offset, unsigned int *nbytes, const char *buf, | |
1488 | const char __user *ubuf, const int long_op) | |
1489 | { | |
1490 | int rc = -EACCES; | |
1491 | WRITE_REQ *pSMB = NULL; | |
1492 | WRITE_RSP *pSMBr = NULL; | |
1493 | int bytes_returned, wct; | |
1494 | __u32 bytes_sent; | |
1495 | __u16 byte_count; | |
1496 | ||
1497 | /* cFYI(1,("write at %lld %d bytes",offset,count));*/ | |
1498 | if (tcon->ses == NULL) | |
1499 | return -ECONNABORTED; | |
1500 | ||
1501 | if (tcon->ses->capabilities & CAP_LARGE_FILES) | |
1502 | wct = 14; | |
1503 | else | |
1504 | wct = 12; | |
1505 | ||
1506 | rc = smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **) &pSMB, | |
1507 | (void **) &pSMBr); | |
1508 | if (rc) | |
1509 | return rc; | |
1510 | /* tcon and ses pointer are checked in smb_init */ | |
1511 | if (tcon->ses->server == NULL) | |
1512 | return -ECONNABORTED; | |
1513 | ||
1514 | pSMB->AndXCommand = 0xFF; /* none */ | |
1515 | pSMB->Fid = netfid; | |
1516 | pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF); | |
1517 | if (wct == 14) | |
1518 | pSMB->OffsetHigh = cpu_to_le32(offset >> 32); | |
1519 | else if ((offset >> 32) > 0) /* can not handle big offset for old srv */ | |
1520 | return -EIO; | |
1521 | ||
1522 | pSMB->Reserved = 0xFFFFFFFF; | |
1523 | pSMB->WriteMode = 0; | |
1524 | pSMB->Remaining = 0; | |
1525 | ||
1526 | /* Can increase buffer size if buffer is big enough in some cases ie we | |
1527 | can send more if LARGE_WRITE_X capability returned by the server and if | |
1528 | our buffer is big enough or if we convert to iovecs on socket writes | |
1529 | and eliminate the copy to the CIFS buffer */ | |
1530 | if (tcon->ses->capabilities & CAP_LARGE_WRITE_X) { | |
1531 | bytes_sent = min_t(const unsigned int, CIFSMaxBufSize, count); | |
1532 | } else { | |
1533 | bytes_sent = (tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE) | |
1534 | & ~0xFF; | |
1535 | } | |
1536 | ||
1537 | if (bytes_sent > count) | |
1538 | bytes_sent = count; | |
1539 | pSMB->DataOffset = | |
1540 | cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4); | |
1541 | if (buf) | |
1542 | memcpy(pSMB->Data, buf, bytes_sent); | |
1543 | else if (ubuf) { | |
1544 | if (copy_from_user(pSMB->Data, ubuf, bytes_sent)) { | |
1545 | cifs_buf_release(pSMB); | |
1546 | return -EFAULT; | |
1547 | } | |
1548 | } else if (count != 0) { | |
1549 | /* No buffer */ | |
1550 | cifs_buf_release(pSMB); | |
1551 | return -EINVAL; | |
1552 | } /* else setting file size with write of zero bytes */ | |
1553 | if (wct == 14) | |
1554 | byte_count = bytes_sent + 1; /* pad */ | |
1555 | else /* wct == 12 */ | |
1556 | byte_count = bytes_sent + 5; /* bigger pad, smaller smb hdr */ | |
1557 | ||
1558 | pSMB->DataLengthLow = cpu_to_le16(bytes_sent & 0xFFFF); | |
1559 | pSMB->DataLengthHigh = cpu_to_le16(bytes_sent >> 16); | |
1560 | pSMB->hdr.smb_buf_length += byte_count; | |
1561 | ||
1562 | if (wct == 14) | |
1563 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
1564 | else { /* old style write has byte count 4 bytes earlier | |
1565 | so 4 bytes pad */ | |
1566 | struct smb_com_writex_req *pSMBW = | |
1567 | (struct smb_com_writex_req *)pSMB; | |
1568 | pSMBW->ByteCount = cpu_to_le16(byte_count); | |
1569 | } | |
1570 | ||
1571 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
1572 | (struct smb_hdr *) pSMBr, &bytes_returned, long_op); | |
1573 | cifs_stats_inc(&tcon->num_writes); | |
1574 | if (rc) { | |
1575 | cFYI(1, ("Send error in write = %d", rc)); | |
1576 | *nbytes = 0; | |
1577 | } else { | |
1578 | *nbytes = le16_to_cpu(pSMBr->CountHigh); | |
1579 | *nbytes = (*nbytes) << 16; | |
1580 | *nbytes += le16_to_cpu(pSMBr->Count); | |
1581 | } | |
1582 | ||
1583 | cifs_buf_release(pSMB); | |
1584 | ||
1585 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
1586 | since file handle passed in no longer valid */ | |
1587 | ||
1588 | return rc; | |
1589 | } | |
1590 | ||
1591 | int | |
1592 | CIFSSMBWrite2(const int xid, struct cifsTconInfo *tcon, | |
1593 | const int netfid, const unsigned int count, | |
1594 | const __u64 offset, unsigned int *nbytes, struct kvec *iov, | |
1595 | int n_vec, const int long_op) | |
1596 | { | |
1597 | int rc = -EACCES; | |
1598 | WRITE_REQ *pSMB = NULL; | |
1599 | int wct; | |
1600 | int smb_hdr_len; | |
1601 | int resp_buf_type = 0; | |
1602 | ||
1603 | cFYI(1, ("write2 at %lld %d bytes", (long long)offset, count)); | |
1604 | ||
1605 | if (tcon->ses->capabilities & CAP_LARGE_FILES) | |
1606 | wct = 14; | |
1607 | else | |
1608 | wct = 12; | |
1609 | rc = small_smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **) &pSMB); | |
1610 | if (rc) | |
1611 | return rc; | |
1612 | /* tcon and ses pointer are checked in smb_init */ | |
1613 | if (tcon->ses->server == NULL) | |
1614 | return -ECONNABORTED; | |
1615 | ||
1616 | pSMB->AndXCommand = 0xFF; /* none */ | |
1617 | pSMB->Fid = netfid; | |
1618 | pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF); | |
1619 | if (wct == 14) | |
1620 | pSMB->OffsetHigh = cpu_to_le32(offset >> 32); | |
1621 | else if ((offset >> 32) > 0) /* can not handle big offset for old srv */ | |
1622 | return -EIO; | |
1623 | pSMB->Reserved = 0xFFFFFFFF; | |
1624 | pSMB->WriteMode = 0; | |
1625 | pSMB->Remaining = 0; | |
1626 | ||
1627 | pSMB->DataOffset = | |
1628 | cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4); | |
1629 | ||
1630 | pSMB->DataLengthLow = cpu_to_le16(count & 0xFFFF); | |
1631 | pSMB->DataLengthHigh = cpu_to_le16(count >> 16); | |
1632 | smb_hdr_len = pSMB->hdr.smb_buf_length + 1; /* hdr + 1 byte pad */ | |
1633 | if (wct == 14) | |
1634 | pSMB->hdr.smb_buf_length += count+1; | |
1635 | else /* wct == 12 */ | |
1636 | pSMB->hdr.smb_buf_length += count+5; /* smb data starts later */ | |
1637 | if (wct == 14) | |
1638 | pSMB->ByteCount = cpu_to_le16(count + 1); | |
1639 | else /* wct == 12 */ /* bigger pad, smaller smb hdr, keep offset ok */ { | |
1640 | struct smb_com_writex_req *pSMBW = | |
1641 | (struct smb_com_writex_req *)pSMB; | |
1642 | pSMBW->ByteCount = cpu_to_le16(count + 5); | |
1643 | } | |
1644 | iov[0].iov_base = pSMB; | |
1645 | if (wct == 14) | |
1646 | iov[0].iov_len = smb_hdr_len + 4; | |
1647 | else /* wct == 12 pad bigger by four bytes */ | |
1648 | iov[0].iov_len = smb_hdr_len + 8; | |
1649 | ||
1650 | ||
1651 | rc = SendReceive2(xid, tcon->ses, iov, n_vec + 1, &resp_buf_type, | |
1652 | long_op); | |
1653 | cifs_stats_inc(&tcon->num_writes); | |
1654 | if (rc) { | |
1655 | cFYI(1, ("Send error Write2 = %d", rc)); | |
1656 | *nbytes = 0; | |
1657 | } else if (resp_buf_type == 0) { | |
1658 | /* presumably this can not happen, but best to be safe */ | |
1659 | rc = -EIO; | |
1660 | *nbytes = 0; | |
1661 | } else { | |
1662 | WRITE_RSP *pSMBr = (WRITE_RSP *)iov[0].iov_base; | |
1663 | *nbytes = le16_to_cpu(pSMBr->CountHigh); | |
1664 | *nbytes = (*nbytes) << 16; | |
1665 | *nbytes += le16_to_cpu(pSMBr->Count); | |
1666 | } | |
1667 | ||
1668 | /* cifs_small_buf_release(pSMB); */ /* Freed earlier now in SendReceive2 */ | |
1669 | if (resp_buf_type == CIFS_SMALL_BUFFER) | |
1670 | cifs_small_buf_release(iov[0].iov_base); | |
1671 | else if (resp_buf_type == CIFS_LARGE_BUFFER) | |
1672 | cifs_buf_release(iov[0].iov_base); | |
1673 | ||
1674 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
1675 | since file handle passed in no longer valid */ | |
1676 | ||
1677 | return rc; | |
1678 | } | |
1679 | ||
1680 | ||
1681 | int | |
1682 | CIFSSMBLock(const int xid, struct cifsTconInfo *tcon, | |
1683 | const __u16 smb_file_id, const __u64 len, | |
1684 | const __u64 offset, const __u32 numUnlock, | |
1685 | const __u32 numLock, const __u8 lockType, const bool waitFlag) | |
1686 | { | |
1687 | int rc = 0; | |
1688 | LOCK_REQ *pSMB = NULL; | |
1689 | LOCK_RSP *pSMBr = NULL; | |
1690 | int bytes_returned; | |
1691 | int timeout = 0; | |
1692 | __u16 count; | |
1693 | ||
1694 | cFYI(1, ("CIFSSMBLock timeout %d numLock %d", (int)waitFlag, numLock)); | |
1695 | rc = small_smb_init(SMB_COM_LOCKING_ANDX, 8, tcon, (void **) &pSMB); | |
1696 | ||
1697 | if (rc) | |
1698 | return rc; | |
1699 | ||
1700 | pSMBr = (LOCK_RSP *)pSMB; /* BB removeme BB */ | |
1701 | ||
1702 | if (lockType == LOCKING_ANDX_OPLOCK_RELEASE) { | |
1703 | timeout = CIFS_ASYNC_OP; /* no response expected */ | |
1704 | pSMB->Timeout = 0; | |
1705 | } else if (waitFlag) { | |
1706 | timeout = CIFS_BLOCKING_OP; /* blocking operation, no timeout */ | |
1707 | pSMB->Timeout = cpu_to_le32(-1);/* blocking - do not time out */ | |
1708 | } else { | |
1709 | pSMB->Timeout = 0; | |
1710 | } | |
1711 | ||
1712 | pSMB->NumberOfLocks = cpu_to_le16(numLock); | |
1713 | pSMB->NumberOfUnlocks = cpu_to_le16(numUnlock); | |
1714 | pSMB->LockType = lockType; | |
1715 | pSMB->AndXCommand = 0xFF; /* none */ | |
1716 | pSMB->Fid = smb_file_id; /* netfid stays le */ | |
1717 | ||
1718 | if ((numLock != 0) || (numUnlock != 0)) { | |
1719 | pSMB->Locks[0].Pid = cpu_to_le16(current->tgid); | |
1720 | /* BB where to store pid high? */ | |
1721 | pSMB->Locks[0].LengthLow = cpu_to_le32((u32)len); | |
1722 | pSMB->Locks[0].LengthHigh = cpu_to_le32((u32)(len>>32)); | |
1723 | pSMB->Locks[0].OffsetLow = cpu_to_le32((u32)offset); | |
1724 | pSMB->Locks[0].OffsetHigh = cpu_to_le32((u32)(offset>>32)); | |
1725 | count = sizeof(LOCKING_ANDX_RANGE); | |
1726 | } else { | |
1727 | /* oplock break */ | |
1728 | count = 0; | |
1729 | } | |
1730 | pSMB->hdr.smb_buf_length += count; | |
1731 | pSMB->ByteCount = cpu_to_le16(count); | |
1732 | ||
1733 | if (waitFlag) { | |
1734 | rc = SendReceiveBlockingLock(xid, tcon, (struct smb_hdr *) pSMB, | |
1735 | (struct smb_hdr *) pSMBr, &bytes_returned); | |
1736 | cifs_small_buf_release(pSMB); | |
1737 | } else { | |
1738 | rc = SendReceiveNoRsp(xid, tcon->ses, (struct smb_hdr *)pSMB, | |
1739 | timeout); | |
1740 | /* SMB buffer freed by function above */ | |
1741 | } | |
1742 | cifs_stats_inc(&tcon->num_locks); | |
1743 | if (rc) | |
1744 | cFYI(1, ("Send error in Lock = %d", rc)); | |
1745 | ||
1746 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
1747 | since file handle passed in no longer valid */ | |
1748 | return rc; | |
1749 | } | |
1750 | ||
1751 | int | |
1752 | CIFSSMBPosixLock(const int xid, struct cifsTconInfo *tcon, | |
1753 | const __u16 smb_file_id, const int get_flag, const __u64 len, | |
1754 | struct file_lock *pLockData, const __u16 lock_type, | |
1755 | const bool waitFlag) | |
1756 | { | |
1757 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
1758 | struct smb_com_transaction2_sfi_rsp *pSMBr = NULL; | |
1759 | struct cifs_posix_lock *parm_data; | |
1760 | int rc = 0; | |
1761 | int timeout = 0; | |
1762 | int bytes_returned = 0; | |
1763 | int resp_buf_type = 0; | |
1764 | __u16 params, param_offset, offset, byte_count, count; | |
1765 | struct kvec iov[1]; | |
1766 | ||
1767 | cFYI(1, ("Posix Lock")); | |
1768 | ||
1769 | if (pLockData == NULL) | |
1770 | return -EINVAL; | |
1771 | ||
1772 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); | |
1773 | ||
1774 | if (rc) | |
1775 | return rc; | |
1776 | ||
1777 | pSMBr = (struct smb_com_transaction2_sfi_rsp *)pSMB; | |
1778 | ||
1779 | params = 6; | |
1780 | pSMB->MaxSetupCount = 0; | |
1781 | pSMB->Reserved = 0; | |
1782 | pSMB->Flags = 0; | |
1783 | pSMB->Reserved2 = 0; | |
1784 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
1785 | offset = param_offset + params; | |
1786 | ||
1787 | count = sizeof(struct cifs_posix_lock); | |
1788 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
1789 | pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB from sess */ | |
1790 | pSMB->SetupCount = 1; | |
1791 | pSMB->Reserved3 = 0; | |
1792 | if (get_flag) | |
1793 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); | |
1794 | else | |
1795 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
1796 | byte_count = 3 /* pad */ + params + count; | |
1797 | pSMB->DataCount = cpu_to_le16(count); | |
1798 | pSMB->ParameterCount = cpu_to_le16(params); | |
1799 | pSMB->TotalDataCount = pSMB->DataCount; | |
1800 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
1801 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
1802 | parm_data = (struct cifs_posix_lock *) | |
1803 | (((char *) &pSMB->hdr.Protocol) + offset); | |
1804 | ||
1805 | parm_data->lock_type = cpu_to_le16(lock_type); | |
1806 | if (waitFlag) { | |
1807 | timeout = CIFS_BLOCKING_OP; /* blocking operation, no timeout */ | |
1808 | parm_data->lock_flags = cpu_to_le16(1); | |
1809 | pSMB->Timeout = cpu_to_le32(-1); | |
1810 | } else | |
1811 | pSMB->Timeout = 0; | |
1812 | ||
1813 | parm_data->pid = cpu_to_le32(current->tgid); | |
1814 | parm_data->start = cpu_to_le64(pLockData->fl_start); | |
1815 | parm_data->length = cpu_to_le64(len); /* normalize negative numbers */ | |
1816 | ||
1817 | pSMB->DataOffset = cpu_to_le16(offset); | |
1818 | pSMB->Fid = smb_file_id; | |
1819 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_POSIX_LOCK); | |
1820 | pSMB->Reserved4 = 0; | |
1821 | pSMB->hdr.smb_buf_length += byte_count; | |
1822 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
1823 | if (waitFlag) { | |
1824 | rc = SendReceiveBlockingLock(xid, tcon, (struct smb_hdr *) pSMB, | |
1825 | (struct smb_hdr *) pSMBr, &bytes_returned); | |
1826 | } else { | |
1827 | iov[0].iov_base = (char *)pSMB; | |
1828 | iov[0].iov_len = pSMB->hdr.smb_buf_length + 4; | |
1829 | rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovecs */, | |
1830 | &resp_buf_type, timeout); | |
1831 | pSMB = NULL; /* request buf already freed by SendReceive2. Do | |
1832 | not try to free it twice below on exit */ | |
1833 | pSMBr = (struct smb_com_transaction2_sfi_rsp *)iov[0].iov_base; | |
1834 | } | |
1835 | ||
1836 | if (rc) { | |
1837 | cFYI(1, ("Send error in Posix Lock = %d", rc)); | |
1838 | } else if (get_flag) { | |
1839 | /* lock structure can be returned on get */ | |
1840 | __u16 data_offset; | |
1841 | __u16 data_count; | |
1842 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
1843 | ||
1844 | if (rc || (pSMBr->ByteCount < sizeof(struct cifs_posix_lock))) { | |
1845 | rc = -EIO; /* bad smb */ | |
1846 | goto plk_err_exit; | |
1847 | } | |
1848 | if (pLockData == NULL) { | |
1849 | rc = -EINVAL; | |
1850 | goto plk_err_exit; | |
1851 | } | |
1852 | data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
1853 | data_count = le16_to_cpu(pSMBr->t2.DataCount); | |
1854 | if (data_count < sizeof(struct cifs_posix_lock)) { | |
1855 | rc = -EIO; | |
1856 | goto plk_err_exit; | |
1857 | } | |
1858 | parm_data = (struct cifs_posix_lock *) | |
1859 | ((char *)&pSMBr->hdr.Protocol + data_offset); | |
1860 | if (parm_data->lock_type == cpu_to_le16(CIFS_UNLCK)) | |
1861 | pLockData->fl_type = F_UNLCK; | |
1862 | } | |
1863 | ||
1864 | plk_err_exit: | |
1865 | if (pSMB) | |
1866 | cifs_small_buf_release(pSMB); | |
1867 | ||
1868 | if (resp_buf_type == CIFS_SMALL_BUFFER) | |
1869 | cifs_small_buf_release(iov[0].iov_base); | |
1870 | else if (resp_buf_type == CIFS_LARGE_BUFFER) | |
1871 | cifs_buf_release(iov[0].iov_base); | |
1872 | ||
1873 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
1874 | since file handle passed in no longer valid */ | |
1875 | ||
1876 | return rc; | |
1877 | } | |
1878 | ||
1879 | ||
1880 | int | |
1881 | CIFSSMBClose(const int xid, struct cifsTconInfo *tcon, int smb_file_id) | |
1882 | { | |
1883 | int rc = 0; | |
1884 | CLOSE_REQ *pSMB = NULL; | |
1885 | cFYI(1, ("In CIFSSMBClose")); | |
1886 | ||
1887 | /* do not retry on dead session on close */ | |
1888 | rc = small_smb_init(SMB_COM_CLOSE, 3, tcon, (void **) &pSMB); | |
1889 | if (rc == -EAGAIN) | |
1890 | return 0; | |
1891 | if (rc) | |
1892 | return rc; | |
1893 | ||
1894 | pSMB->FileID = (__u16) smb_file_id; | |
1895 | pSMB->LastWriteTime = 0xFFFFFFFF; | |
1896 | pSMB->ByteCount = 0; | |
1897 | rc = SendReceiveNoRsp(xid, tcon->ses, (struct smb_hdr *) pSMB, 0); | |
1898 | cifs_stats_inc(&tcon->num_closes); | |
1899 | if (rc) { | |
1900 | if (rc != -EINTR) { | |
1901 | /* EINTR is expected when user ctl-c to kill app */ | |
1902 | cERROR(1, ("Send error in Close = %d", rc)); | |
1903 | } | |
1904 | } | |
1905 | ||
1906 | /* Since session is dead, file will be closed on server already */ | |
1907 | if (rc == -EAGAIN) | |
1908 | rc = 0; | |
1909 | ||
1910 | return rc; | |
1911 | } | |
1912 | ||
1913 | int | |
1914 | CIFSSMBRename(const int xid, struct cifsTconInfo *tcon, | |
1915 | const char *fromName, const char *toName, | |
1916 | const struct nls_table *nls_codepage, int remap) | |
1917 | { | |
1918 | int rc = 0; | |
1919 | RENAME_REQ *pSMB = NULL; | |
1920 | RENAME_RSP *pSMBr = NULL; | |
1921 | int bytes_returned; | |
1922 | int name_len, name_len2; | |
1923 | __u16 count; | |
1924 | ||
1925 | cFYI(1, ("In CIFSSMBRename")); | |
1926 | renameRetry: | |
1927 | rc = smb_init(SMB_COM_RENAME, 1, tcon, (void **) &pSMB, | |
1928 | (void **) &pSMBr); | |
1929 | if (rc) | |
1930 | return rc; | |
1931 | ||
1932 | pSMB->BufferFormat = 0x04; | |
1933 | pSMB->SearchAttributes = | |
1934 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
1935 | ATTR_DIRECTORY); | |
1936 | ||
1937 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
1938 | name_len = | |
1939 | cifsConvertToUCS((__le16 *) pSMB->OldFileName, fromName, | |
1940 | PATH_MAX, nls_codepage, remap); | |
1941 | name_len++; /* trailing null */ | |
1942 | name_len *= 2; | |
1943 | pSMB->OldFileName[name_len] = 0x04; /* pad */ | |
1944 | /* protocol requires ASCII signature byte on Unicode string */ | |
1945 | pSMB->OldFileName[name_len + 1] = 0x00; | |
1946 | name_len2 = | |
1947 | cifsConvertToUCS((__le16 *) &pSMB->OldFileName[name_len + 2], | |
1948 | toName, PATH_MAX, nls_codepage, remap); | |
1949 | name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; | |
1950 | name_len2 *= 2; /* convert to bytes */ | |
1951 | } else { /* BB improve the check for buffer overruns BB */ | |
1952 | name_len = strnlen(fromName, PATH_MAX); | |
1953 | name_len++; /* trailing null */ | |
1954 | strncpy(pSMB->OldFileName, fromName, name_len); | |
1955 | name_len2 = strnlen(toName, PATH_MAX); | |
1956 | name_len2++; /* trailing null */ | |
1957 | pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ | |
1958 | strncpy(&pSMB->OldFileName[name_len + 1], toName, name_len2); | |
1959 | name_len2++; /* trailing null */ | |
1960 | name_len2++; /* signature byte */ | |
1961 | } | |
1962 | ||
1963 | count = 1 /* 1st signature byte */ + name_len + name_len2; | |
1964 | pSMB->hdr.smb_buf_length += count; | |
1965 | pSMB->ByteCount = cpu_to_le16(count); | |
1966 | ||
1967 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
1968 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
1969 | cifs_stats_inc(&tcon->num_renames); | |
1970 | if (rc) | |
1971 | cFYI(1, ("Send error in rename = %d", rc)); | |
1972 | ||
1973 | cifs_buf_release(pSMB); | |
1974 | ||
1975 | if (rc == -EAGAIN) | |
1976 | goto renameRetry; | |
1977 | ||
1978 | return rc; | |
1979 | } | |
1980 | ||
1981 | int CIFSSMBRenameOpenFile(const int xid, struct cifsTconInfo *pTcon, | |
1982 | int netfid, char *target_name, | |
1983 | const struct nls_table *nls_codepage, int remap) | |
1984 | { | |
1985 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
1986 | struct smb_com_transaction2_sfi_rsp *pSMBr = NULL; | |
1987 | struct set_file_rename *rename_info; | |
1988 | char *data_offset; | |
1989 | char dummy_string[30]; | |
1990 | int rc = 0; | |
1991 | int bytes_returned = 0; | |
1992 | int len_of_str; | |
1993 | __u16 params, param_offset, offset, count, byte_count; | |
1994 | ||
1995 | cFYI(1, ("Rename to File by handle")); | |
1996 | rc = smb_init(SMB_COM_TRANSACTION2, 15, pTcon, (void **) &pSMB, | |
1997 | (void **) &pSMBr); | |
1998 | if (rc) | |
1999 | return rc; | |
2000 | ||
2001 | params = 6; | |
2002 | pSMB->MaxSetupCount = 0; | |
2003 | pSMB->Reserved = 0; | |
2004 | pSMB->Flags = 0; | |
2005 | pSMB->Timeout = 0; | |
2006 | pSMB->Reserved2 = 0; | |
2007 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
2008 | offset = param_offset + params; | |
2009 | ||
2010 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
2011 | rename_info = (struct set_file_rename *) data_offset; | |
2012 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
2013 | pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB from sess */ | |
2014 | pSMB->SetupCount = 1; | |
2015 | pSMB->Reserved3 = 0; | |
2016 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
2017 | byte_count = 3 /* pad */ + params; | |
2018 | pSMB->ParameterCount = cpu_to_le16(params); | |
2019 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2020 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
2021 | pSMB->DataOffset = cpu_to_le16(offset); | |
2022 | /* construct random name ".cifs_tmp<inodenum><mid>" */ | |
2023 | rename_info->overwrite = cpu_to_le32(1); | |
2024 | rename_info->root_fid = 0; | |
2025 | /* unicode only call */ | |
2026 | if (target_name == NULL) { | |
2027 | sprintf(dummy_string, "cifs%x", pSMB->hdr.Mid); | |
2028 | len_of_str = cifsConvertToUCS((__le16 *)rename_info->target_name, | |
2029 | dummy_string, 24, nls_codepage, remap); | |
2030 | } else { | |
2031 | len_of_str = cifsConvertToUCS((__le16 *)rename_info->target_name, | |
2032 | target_name, PATH_MAX, nls_codepage, | |
2033 | remap); | |
2034 | } | |
2035 | rename_info->target_name_len = cpu_to_le32(2 * len_of_str); | |
2036 | count = 12 /* sizeof(struct set_file_rename) */ + (2 * len_of_str) + 2; | |
2037 | byte_count += count; | |
2038 | pSMB->DataCount = cpu_to_le16(count); | |
2039 | pSMB->TotalDataCount = pSMB->DataCount; | |
2040 | pSMB->Fid = netfid; | |
2041 | pSMB->InformationLevel = | |
2042 | cpu_to_le16(SMB_SET_FILE_RENAME_INFORMATION); | |
2043 | pSMB->Reserved4 = 0; | |
2044 | pSMB->hdr.smb_buf_length += byte_count; | |
2045 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
2046 | rc = SendReceive(xid, pTcon->ses, (struct smb_hdr *) pSMB, | |
2047 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
2048 | cifs_stats_inc(&pTcon->num_t2renames); | |
2049 | if (rc) | |
2050 | cFYI(1, ("Send error in Rename (by file handle) = %d", rc)); | |
2051 | ||
2052 | cifs_buf_release(pSMB); | |
2053 | ||
2054 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
2055 | since file handle passed in no longer valid */ | |
2056 | ||
2057 | return rc; | |
2058 | } | |
2059 | ||
2060 | int | |
2061 | CIFSSMBCopy(const int xid, struct cifsTconInfo *tcon, const char *fromName, | |
2062 | const __u16 target_tid, const char *toName, const int flags, | |
2063 | const struct nls_table *nls_codepage, int remap) | |
2064 | { | |
2065 | int rc = 0; | |
2066 | COPY_REQ *pSMB = NULL; | |
2067 | COPY_RSP *pSMBr = NULL; | |
2068 | int bytes_returned; | |
2069 | int name_len, name_len2; | |
2070 | __u16 count; | |
2071 | ||
2072 | cFYI(1, ("In CIFSSMBCopy")); | |
2073 | copyRetry: | |
2074 | rc = smb_init(SMB_COM_COPY, 1, tcon, (void **) &pSMB, | |
2075 | (void **) &pSMBr); | |
2076 | if (rc) | |
2077 | return rc; | |
2078 | ||
2079 | pSMB->BufferFormat = 0x04; | |
2080 | pSMB->Tid2 = target_tid; | |
2081 | ||
2082 | pSMB->Flags = cpu_to_le16(flags & COPY_TREE); | |
2083 | ||
2084 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2085 | name_len = cifsConvertToUCS((__le16 *) pSMB->OldFileName, | |
2086 | fromName, PATH_MAX, nls_codepage, | |
2087 | remap); | |
2088 | name_len++; /* trailing null */ | |
2089 | name_len *= 2; | |
2090 | pSMB->OldFileName[name_len] = 0x04; /* pad */ | |
2091 | /* protocol requires ASCII signature byte on Unicode string */ | |
2092 | pSMB->OldFileName[name_len + 1] = 0x00; | |
2093 | name_len2 = | |
2094 | cifsConvertToUCS((__le16 *)&pSMB->OldFileName[name_len + 2], | |
2095 | toName, PATH_MAX, nls_codepage, remap); | |
2096 | name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; | |
2097 | name_len2 *= 2; /* convert to bytes */ | |
2098 | } else { /* BB improve the check for buffer overruns BB */ | |
2099 | name_len = strnlen(fromName, PATH_MAX); | |
2100 | name_len++; /* trailing null */ | |
2101 | strncpy(pSMB->OldFileName, fromName, name_len); | |
2102 | name_len2 = strnlen(toName, PATH_MAX); | |
2103 | name_len2++; /* trailing null */ | |
2104 | pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ | |
2105 | strncpy(&pSMB->OldFileName[name_len + 1], toName, name_len2); | |
2106 | name_len2++; /* trailing null */ | |
2107 | name_len2++; /* signature byte */ | |
2108 | } | |
2109 | ||
2110 | count = 1 /* 1st signature byte */ + name_len + name_len2; | |
2111 | pSMB->hdr.smb_buf_length += count; | |
2112 | pSMB->ByteCount = cpu_to_le16(count); | |
2113 | ||
2114 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2115 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
2116 | if (rc) { | |
2117 | cFYI(1, ("Send error in copy = %d with %d files copied", | |
2118 | rc, le16_to_cpu(pSMBr->CopyCount))); | |
2119 | } | |
2120 | if (pSMB) | |
2121 | cifs_buf_release(pSMB); | |
2122 | ||
2123 | if (rc == -EAGAIN) | |
2124 | goto copyRetry; | |
2125 | ||
2126 | return rc; | |
2127 | } | |
2128 | ||
2129 | int | |
2130 | CIFSUnixCreateSymLink(const int xid, struct cifsTconInfo *tcon, | |
2131 | const char *fromName, const char *toName, | |
2132 | const struct nls_table *nls_codepage) | |
2133 | { | |
2134 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
2135 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
2136 | char *data_offset; | |
2137 | int name_len; | |
2138 | int name_len_target; | |
2139 | int rc = 0; | |
2140 | int bytes_returned = 0; | |
2141 | __u16 params, param_offset, offset, byte_count; | |
2142 | ||
2143 | cFYI(1, ("In Symlink Unix style")); | |
2144 | createSymLinkRetry: | |
2145 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2146 | (void **) &pSMBr); | |
2147 | if (rc) | |
2148 | return rc; | |
2149 | ||
2150 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2151 | name_len = | |
2152 | cifs_strtoUCS((__le16 *) pSMB->FileName, fromName, PATH_MAX | |
2153 | /* find define for this maxpathcomponent */ | |
2154 | , nls_codepage); | |
2155 | name_len++; /* trailing null */ | |
2156 | name_len *= 2; | |
2157 | ||
2158 | } else { /* BB improve the check for buffer overruns BB */ | |
2159 | name_len = strnlen(fromName, PATH_MAX); | |
2160 | name_len++; /* trailing null */ | |
2161 | strncpy(pSMB->FileName, fromName, name_len); | |
2162 | } | |
2163 | params = 6 + name_len; | |
2164 | pSMB->MaxSetupCount = 0; | |
2165 | pSMB->Reserved = 0; | |
2166 | pSMB->Flags = 0; | |
2167 | pSMB->Timeout = 0; | |
2168 | pSMB->Reserved2 = 0; | |
2169 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
2170 | InformationLevel) - 4; | |
2171 | offset = param_offset + params; | |
2172 | ||
2173 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
2174 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2175 | name_len_target = | |
2176 | cifs_strtoUCS((__le16 *) data_offset, toName, PATH_MAX | |
2177 | /* find define for this maxpathcomponent */ | |
2178 | , nls_codepage); | |
2179 | name_len_target++; /* trailing null */ | |
2180 | name_len_target *= 2; | |
2181 | } else { /* BB improve the check for buffer overruns BB */ | |
2182 | name_len_target = strnlen(toName, PATH_MAX); | |
2183 | name_len_target++; /* trailing null */ | |
2184 | strncpy(data_offset, toName, name_len_target); | |
2185 | } | |
2186 | ||
2187 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
2188 | /* BB find exact max on data count below from sess */ | |
2189 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
2190 | pSMB->SetupCount = 1; | |
2191 | pSMB->Reserved3 = 0; | |
2192 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
2193 | byte_count = 3 /* pad */ + params + name_len_target; | |
2194 | pSMB->DataCount = cpu_to_le16(name_len_target); | |
2195 | pSMB->ParameterCount = cpu_to_le16(params); | |
2196 | pSMB->TotalDataCount = pSMB->DataCount; | |
2197 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2198 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
2199 | pSMB->DataOffset = cpu_to_le16(offset); | |
2200 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_LINK); | |
2201 | pSMB->Reserved4 = 0; | |
2202 | pSMB->hdr.smb_buf_length += byte_count; | |
2203 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
2204 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2205 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
2206 | cifs_stats_inc(&tcon->num_symlinks); | |
2207 | if (rc) | |
2208 | cFYI(1, ("Send error in SetPathInfo create symlink = %d", rc)); | |
2209 | ||
2210 | if (pSMB) | |
2211 | cifs_buf_release(pSMB); | |
2212 | ||
2213 | if (rc == -EAGAIN) | |
2214 | goto createSymLinkRetry; | |
2215 | ||
2216 | return rc; | |
2217 | } | |
2218 | ||
2219 | int | |
2220 | CIFSUnixCreateHardLink(const int xid, struct cifsTconInfo *tcon, | |
2221 | const char *fromName, const char *toName, | |
2222 | const struct nls_table *nls_codepage, int remap) | |
2223 | { | |
2224 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
2225 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
2226 | char *data_offset; | |
2227 | int name_len; | |
2228 | int name_len_target; | |
2229 | int rc = 0; | |
2230 | int bytes_returned = 0; | |
2231 | __u16 params, param_offset, offset, byte_count; | |
2232 | ||
2233 | cFYI(1, ("In Create Hard link Unix style")); | |
2234 | createHardLinkRetry: | |
2235 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2236 | (void **) &pSMBr); | |
2237 | if (rc) | |
2238 | return rc; | |
2239 | ||
2240 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2241 | name_len = cifsConvertToUCS((__le16 *) pSMB->FileName, toName, | |
2242 | PATH_MAX, nls_codepage, remap); | |
2243 | name_len++; /* trailing null */ | |
2244 | name_len *= 2; | |
2245 | ||
2246 | } else { /* BB improve the check for buffer overruns BB */ | |
2247 | name_len = strnlen(toName, PATH_MAX); | |
2248 | name_len++; /* trailing null */ | |
2249 | strncpy(pSMB->FileName, toName, name_len); | |
2250 | } | |
2251 | params = 6 + name_len; | |
2252 | pSMB->MaxSetupCount = 0; | |
2253 | pSMB->Reserved = 0; | |
2254 | pSMB->Flags = 0; | |
2255 | pSMB->Timeout = 0; | |
2256 | pSMB->Reserved2 = 0; | |
2257 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
2258 | InformationLevel) - 4; | |
2259 | offset = param_offset + params; | |
2260 | ||
2261 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
2262 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2263 | name_len_target = | |
2264 | cifsConvertToUCS((__le16 *) data_offset, fromName, PATH_MAX, | |
2265 | nls_codepage, remap); | |
2266 | name_len_target++; /* trailing null */ | |
2267 | name_len_target *= 2; | |
2268 | } else { /* BB improve the check for buffer overruns BB */ | |
2269 | name_len_target = strnlen(fromName, PATH_MAX); | |
2270 | name_len_target++; /* trailing null */ | |
2271 | strncpy(data_offset, fromName, name_len_target); | |
2272 | } | |
2273 | ||
2274 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
2275 | /* BB find exact max on data count below from sess*/ | |
2276 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
2277 | pSMB->SetupCount = 1; | |
2278 | pSMB->Reserved3 = 0; | |
2279 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
2280 | byte_count = 3 /* pad */ + params + name_len_target; | |
2281 | pSMB->ParameterCount = cpu_to_le16(params); | |
2282 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2283 | pSMB->DataCount = cpu_to_le16(name_len_target); | |
2284 | pSMB->TotalDataCount = pSMB->DataCount; | |
2285 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
2286 | pSMB->DataOffset = cpu_to_le16(offset); | |
2287 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_HLINK); | |
2288 | pSMB->Reserved4 = 0; | |
2289 | pSMB->hdr.smb_buf_length += byte_count; | |
2290 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
2291 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2292 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
2293 | cifs_stats_inc(&tcon->num_hardlinks); | |
2294 | if (rc) | |
2295 | cFYI(1, ("Send error in SetPathInfo (hard link) = %d", rc)); | |
2296 | ||
2297 | cifs_buf_release(pSMB); | |
2298 | if (rc == -EAGAIN) | |
2299 | goto createHardLinkRetry; | |
2300 | ||
2301 | return rc; | |
2302 | } | |
2303 | ||
2304 | int | |
2305 | CIFSCreateHardLink(const int xid, struct cifsTconInfo *tcon, | |
2306 | const char *fromName, const char *toName, | |
2307 | const struct nls_table *nls_codepage, int remap) | |
2308 | { | |
2309 | int rc = 0; | |
2310 | NT_RENAME_REQ *pSMB = NULL; | |
2311 | RENAME_RSP *pSMBr = NULL; | |
2312 | int bytes_returned; | |
2313 | int name_len, name_len2; | |
2314 | __u16 count; | |
2315 | ||
2316 | cFYI(1, ("In CIFSCreateHardLink")); | |
2317 | winCreateHardLinkRetry: | |
2318 | ||
2319 | rc = smb_init(SMB_COM_NT_RENAME, 4, tcon, (void **) &pSMB, | |
2320 | (void **) &pSMBr); | |
2321 | if (rc) | |
2322 | return rc; | |
2323 | ||
2324 | pSMB->SearchAttributes = | |
2325 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
2326 | ATTR_DIRECTORY); | |
2327 | pSMB->Flags = cpu_to_le16(CREATE_HARD_LINK); | |
2328 | pSMB->ClusterCount = 0; | |
2329 | ||
2330 | pSMB->BufferFormat = 0x04; | |
2331 | ||
2332 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2333 | name_len = | |
2334 | cifsConvertToUCS((__le16 *) pSMB->OldFileName, fromName, | |
2335 | PATH_MAX, nls_codepage, remap); | |
2336 | name_len++; /* trailing null */ | |
2337 | name_len *= 2; | |
2338 | pSMB->OldFileName[name_len] = 0; /* pad */ | |
2339 | pSMB->OldFileName[name_len + 1] = 0x04; | |
2340 | name_len2 = | |
2341 | cifsConvertToUCS((__le16 *)&pSMB->OldFileName[name_len + 2], | |
2342 | toName, PATH_MAX, nls_codepage, remap); | |
2343 | name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ; | |
2344 | name_len2 *= 2; /* convert to bytes */ | |
2345 | } else { /* BB improve the check for buffer overruns BB */ | |
2346 | name_len = strnlen(fromName, PATH_MAX); | |
2347 | name_len++; /* trailing null */ | |
2348 | strncpy(pSMB->OldFileName, fromName, name_len); | |
2349 | name_len2 = strnlen(toName, PATH_MAX); | |
2350 | name_len2++; /* trailing null */ | |
2351 | pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */ | |
2352 | strncpy(&pSMB->OldFileName[name_len + 1], toName, name_len2); | |
2353 | name_len2++; /* trailing null */ | |
2354 | name_len2++; /* signature byte */ | |
2355 | } | |
2356 | ||
2357 | count = 1 /* string type byte */ + name_len + name_len2; | |
2358 | pSMB->hdr.smb_buf_length += count; | |
2359 | pSMB->ByteCount = cpu_to_le16(count); | |
2360 | ||
2361 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2362 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
2363 | cifs_stats_inc(&tcon->num_hardlinks); | |
2364 | if (rc) | |
2365 | cFYI(1, ("Send error in hard link (NT rename) = %d", rc)); | |
2366 | ||
2367 | cifs_buf_release(pSMB); | |
2368 | if (rc == -EAGAIN) | |
2369 | goto winCreateHardLinkRetry; | |
2370 | ||
2371 | return rc; | |
2372 | } | |
2373 | ||
2374 | int | |
2375 | CIFSSMBUnixQuerySymLink(const int xid, struct cifsTconInfo *tcon, | |
2376 | const unsigned char *searchName, | |
2377 | char *symlinkinfo, const int buflen, | |
2378 | const struct nls_table *nls_codepage) | |
2379 | { | |
2380 | /* SMB_QUERY_FILE_UNIX_LINK */ | |
2381 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
2382 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
2383 | int rc = 0; | |
2384 | int bytes_returned; | |
2385 | int name_len; | |
2386 | __u16 params, byte_count; | |
2387 | ||
2388 | cFYI(1, ("In QPathSymLinkInfo (Unix) for path %s", searchName)); | |
2389 | ||
2390 | querySymLinkRetry: | |
2391 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2392 | (void **) &pSMBr); | |
2393 | if (rc) | |
2394 | return rc; | |
2395 | ||
2396 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2397 | name_len = | |
2398 | cifs_strtoUCS((__le16 *) pSMB->FileName, searchName, | |
2399 | PATH_MAX, nls_codepage); | |
2400 | name_len++; /* trailing null */ | |
2401 | name_len *= 2; | |
2402 | } else { /* BB improve the check for buffer overruns BB */ | |
2403 | name_len = strnlen(searchName, PATH_MAX); | |
2404 | name_len++; /* trailing null */ | |
2405 | strncpy(pSMB->FileName, searchName, name_len); | |
2406 | } | |
2407 | ||
2408 | params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; | |
2409 | pSMB->TotalDataCount = 0; | |
2410 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
2411 | /* BB find exact max data count below from sess structure BB */ | |
2412 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
2413 | pSMB->MaxSetupCount = 0; | |
2414 | pSMB->Reserved = 0; | |
2415 | pSMB->Flags = 0; | |
2416 | pSMB->Timeout = 0; | |
2417 | pSMB->Reserved2 = 0; | |
2418 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
2419 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); | |
2420 | pSMB->DataCount = 0; | |
2421 | pSMB->DataOffset = 0; | |
2422 | pSMB->SetupCount = 1; | |
2423 | pSMB->Reserved3 = 0; | |
2424 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
2425 | byte_count = params + 1 /* pad */ ; | |
2426 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
2427 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
2428 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_LINK); | |
2429 | pSMB->Reserved4 = 0; | |
2430 | pSMB->hdr.smb_buf_length += byte_count; | |
2431 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
2432 | ||
2433 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2434 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
2435 | if (rc) { | |
2436 | cFYI(1, ("Send error in QuerySymLinkInfo = %d", rc)); | |
2437 | } else { | |
2438 | /* decode response */ | |
2439 | ||
2440 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
2441 | if (rc || (pSMBr->ByteCount < 2)) | |
2442 | /* BB also check enough total bytes returned */ | |
2443 | rc = -EIO; /* bad smb */ | |
2444 | else { | |
2445 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
2446 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
2447 | ||
2448 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2449 | name_len = UniStrnlen((wchar_t *) ((char *) | |
2450 | &pSMBr->hdr.Protocol + data_offset), | |
2451 | min_t(const int, buflen, count) / 2); | |
2452 | /* BB FIXME investigate remapping reserved chars here */ | |
2453 | cifs_strfromUCS_le(symlinkinfo, | |
2454 | (__le16 *) ((char *)&pSMBr->hdr.Protocol | |
2455 | + data_offset), | |
2456 | name_len, nls_codepage); | |
2457 | } else { | |
2458 | strncpy(symlinkinfo, | |
2459 | (char *) &pSMBr->hdr.Protocol + | |
2460 | data_offset, | |
2461 | min_t(const int, buflen, count)); | |
2462 | } | |
2463 | symlinkinfo[buflen] = 0; | |
2464 | /* just in case so calling code does not go off the end of buffer */ | |
2465 | } | |
2466 | } | |
2467 | cifs_buf_release(pSMB); | |
2468 | if (rc == -EAGAIN) | |
2469 | goto querySymLinkRetry; | |
2470 | return rc; | |
2471 | } | |
2472 | ||
2473 | #ifdef CONFIG_CIFS_EXPERIMENTAL | |
2474 | /* Initialize NT TRANSACT SMB into small smb request buffer. | |
2475 | This assumes that all NT TRANSACTS that we init here have | |
2476 | total parm and data under about 400 bytes (to fit in small cifs | |
2477 | buffer size), which is the case so far, it easily fits. NB: | |
2478 | Setup words themselves and ByteCount | |
2479 | MaxSetupCount (size of returned setup area) and | |
2480 | MaxParameterCount (returned parms size) must be set by caller */ | |
2481 | static int | |
2482 | smb_init_nttransact(const __u16 sub_command, const int setup_count, | |
2483 | const int parm_len, struct cifsTconInfo *tcon, | |
2484 | void **ret_buf) | |
2485 | { | |
2486 | int rc; | |
2487 | __u32 temp_offset; | |
2488 | struct smb_com_ntransact_req *pSMB; | |
2489 | ||
2490 | rc = small_smb_init(SMB_COM_NT_TRANSACT, 19 + setup_count, tcon, | |
2491 | (void **)&pSMB); | |
2492 | if (rc) | |
2493 | return rc; | |
2494 | *ret_buf = (void *)pSMB; | |
2495 | pSMB->Reserved = 0; | |
2496 | pSMB->TotalParameterCount = cpu_to_le32(parm_len); | |
2497 | pSMB->TotalDataCount = 0; | |
2498 | pSMB->MaxDataCount = cpu_to_le32((tcon->ses->server->maxBuf - | |
2499 | MAX_CIFS_HDR_SIZE) & 0xFFFFFF00); | |
2500 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
2501 | pSMB->DataCount = pSMB->TotalDataCount; | |
2502 | temp_offset = offsetof(struct smb_com_ntransact_req, Parms) + | |
2503 | (setup_count * 2) - 4 /* for rfc1001 length itself */; | |
2504 | pSMB->ParameterOffset = cpu_to_le32(temp_offset); | |
2505 | pSMB->DataOffset = cpu_to_le32(temp_offset + parm_len); | |
2506 | pSMB->SetupCount = setup_count; /* no need to le convert byte fields */ | |
2507 | pSMB->SubCommand = cpu_to_le16(sub_command); | |
2508 | return 0; | |
2509 | } | |
2510 | ||
2511 | static int | |
2512 | validate_ntransact(char *buf, char **ppparm, char **ppdata, | |
2513 | __u32 *pparmlen, __u32 *pdatalen) | |
2514 | { | |
2515 | char *end_of_smb; | |
2516 | __u32 data_count, data_offset, parm_count, parm_offset; | |
2517 | struct smb_com_ntransact_rsp *pSMBr; | |
2518 | ||
2519 | *pdatalen = 0; | |
2520 | *pparmlen = 0; | |
2521 | ||
2522 | if (buf == NULL) | |
2523 | return -EINVAL; | |
2524 | ||
2525 | pSMBr = (struct smb_com_ntransact_rsp *)buf; | |
2526 | ||
2527 | /* ByteCount was converted from little endian in SendReceive */ | |
2528 | end_of_smb = 2 /* sizeof byte count */ + pSMBr->ByteCount + | |
2529 | (char *)&pSMBr->ByteCount; | |
2530 | ||
2531 | data_offset = le32_to_cpu(pSMBr->DataOffset); | |
2532 | data_count = le32_to_cpu(pSMBr->DataCount); | |
2533 | parm_offset = le32_to_cpu(pSMBr->ParameterOffset); | |
2534 | parm_count = le32_to_cpu(pSMBr->ParameterCount); | |
2535 | ||
2536 | *ppparm = (char *)&pSMBr->hdr.Protocol + parm_offset; | |
2537 | *ppdata = (char *)&pSMBr->hdr.Protocol + data_offset; | |
2538 | ||
2539 | /* should we also check that parm and data areas do not overlap? */ | |
2540 | if (*ppparm > end_of_smb) { | |
2541 | cFYI(1, ("parms start after end of smb")); | |
2542 | return -EINVAL; | |
2543 | } else if (parm_count + *ppparm > end_of_smb) { | |
2544 | cFYI(1, ("parm end after end of smb")); | |
2545 | return -EINVAL; | |
2546 | } else if (*ppdata > end_of_smb) { | |
2547 | cFYI(1, ("data starts after end of smb")); | |
2548 | return -EINVAL; | |
2549 | } else if (data_count + *ppdata > end_of_smb) { | |
2550 | cFYI(1, ("data %p + count %d (%p) ends after end of smb %p start %p", | |
2551 | *ppdata, data_count, (data_count + *ppdata), | |
2552 | end_of_smb, pSMBr)); | |
2553 | return -EINVAL; | |
2554 | } else if (parm_count + data_count > pSMBr->ByteCount) { | |
2555 | cFYI(1, ("parm count and data count larger than SMB")); | |
2556 | return -EINVAL; | |
2557 | } | |
2558 | *pdatalen = data_count; | |
2559 | *pparmlen = parm_count; | |
2560 | return 0; | |
2561 | } | |
2562 | #endif /* CIFS_EXPERIMENTAL */ | |
2563 | ||
2564 | int | |
2565 | CIFSSMBQueryReparseLinkInfo(const int xid, struct cifsTconInfo *tcon, | |
2566 | const unsigned char *searchName, | |
2567 | char *symlinkinfo, const int buflen, __u16 fid, | |
2568 | const struct nls_table *nls_codepage) | |
2569 | { | |
2570 | int rc = 0; | |
2571 | int bytes_returned; | |
2572 | int name_len; | |
2573 | struct smb_com_transaction_ioctl_req *pSMB; | |
2574 | struct smb_com_transaction_ioctl_rsp *pSMBr; | |
2575 | ||
2576 | cFYI(1, ("In Windows reparse style QueryLink for path %s", searchName)); | |
2577 | rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB, | |
2578 | (void **) &pSMBr); | |
2579 | if (rc) | |
2580 | return rc; | |
2581 | ||
2582 | pSMB->TotalParameterCount = 0 ; | |
2583 | pSMB->TotalDataCount = 0; | |
2584 | pSMB->MaxParameterCount = cpu_to_le32(2); | |
2585 | /* BB find exact data count max from sess structure BB */ | |
2586 | pSMB->MaxDataCount = cpu_to_le32((tcon->ses->server->maxBuf - | |
2587 | MAX_CIFS_HDR_SIZE) & 0xFFFFFF00); | |
2588 | pSMB->MaxSetupCount = 4; | |
2589 | pSMB->Reserved = 0; | |
2590 | pSMB->ParameterOffset = 0; | |
2591 | pSMB->DataCount = 0; | |
2592 | pSMB->DataOffset = 0; | |
2593 | pSMB->SetupCount = 4; | |
2594 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_IOCTL); | |
2595 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
2596 | pSMB->FunctionCode = cpu_to_le32(FSCTL_GET_REPARSE_POINT); | |
2597 | pSMB->IsFsctl = 1; /* FSCTL */ | |
2598 | pSMB->IsRootFlag = 0; | |
2599 | pSMB->Fid = fid; /* file handle always le */ | |
2600 | pSMB->ByteCount = 0; | |
2601 | ||
2602 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2603 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
2604 | if (rc) { | |
2605 | cFYI(1, ("Send error in QueryReparseLinkInfo = %d", rc)); | |
2606 | } else { /* decode response */ | |
2607 | __u32 data_offset = le32_to_cpu(pSMBr->DataOffset); | |
2608 | __u32 data_count = le32_to_cpu(pSMBr->DataCount); | |
2609 | if ((pSMBr->ByteCount < 2) || (data_offset > 512)) | |
2610 | /* BB also check enough total bytes returned */ | |
2611 | rc = -EIO; /* bad smb */ | |
2612 | else { | |
2613 | if (data_count && (data_count < 2048)) { | |
2614 | char *end_of_smb = 2 /* sizeof byte count */ + | |
2615 | pSMBr->ByteCount + | |
2616 | (char *)&pSMBr->ByteCount; | |
2617 | ||
2618 | struct reparse_data *reparse_buf = | |
2619 | (struct reparse_data *) | |
2620 | ((char *)&pSMBr->hdr.Protocol | |
2621 | + data_offset); | |
2622 | if ((char *)reparse_buf >= end_of_smb) { | |
2623 | rc = -EIO; | |
2624 | goto qreparse_out; | |
2625 | } | |
2626 | if ((reparse_buf->LinkNamesBuf + | |
2627 | reparse_buf->TargetNameOffset + | |
2628 | reparse_buf->TargetNameLen) > | |
2629 | end_of_smb) { | |
2630 | cFYI(1, ("reparse buf beyond SMB")); | |
2631 | rc = -EIO; | |
2632 | goto qreparse_out; | |
2633 | } | |
2634 | ||
2635 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2636 | name_len = UniStrnlen((wchar_t *) | |
2637 | (reparse_buf->LinkNamesBuf + | |
2638 | reparse_buf->TargetNameOffset), | |
2639 | min(buflen/2, | |
2640 | reparse_buf->TargetNameLen / 2)); | |
2641 | cifs_strfromUCS_le(symlinkinfo, | |
2642 | (__le16 *) (reparse_buf->LinkNamesBuf + | |
2643 | reparse_buf->TargetNameOffset), | |
2644 | name_len, nls_codepage); | |
2645 | } else { /* ASCII names */ | |
2646 | strncpy(symlinkinfo, | |
2647 | reparse_buf->LinkNamesBuf + | |
2648 | reparse_buf->TargetNameOffset, | |
2649 | min_t(const int, buflen, | |
2650 | reparse_buf->TargetNameLen)); | |
2651 | } | |
2652 | } else { | |
2653 | rc = -EIO; | |
2654 | cFYI(1, ("Invalid return data count on " | |
2655 | "get reparse info ioctl")); | |
2656 | } | |
2657 | symlinkinfo[buflen] = 0; /* just in case so the caller | |
2658 | does not go off the end of the buffer */ | |
2659 | cFYI(1, ("readlink result - %s", symlinkinfo)); | |
2660 | } | |
2661 | } | |
2662 | qreparse_out: | |
2663 | cifs_buf_release(pSMB); | |
2664 | ||
2665 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
2666 | since file handle passed in no longer valid */ | |
2667 | ||
2668 | return rc; | |
2669 | } | |
2670 | ||
2671 | #ifdef CONFIG_CIFS_POSIX | |
2672 | ||
2673 | /*Convert an Access Control Entry from wire format to local POSIX xattr format*/ | |
2674 | static void cifs_convert_ace(posix_acl_xattr_entry *ace, | |
2675 | struct cifs_posix_ace *cifs_ace) | |
2676 | { | |
2677 | /* u8 cifs fields do not need le conversion */ | |
2678 | ace->e_perm = cpu_to_le16(cifs_ace->cifs_e_perm); | |
2679 | ace->e_tag = cpu_to_le16(cifs_ace->cifs_e_tag); | |
2680 | ace->e_id = cpu_to_le32(le64_to_cpu(cifs_ace->cifs_uid)); | |
2681 | /* cFYI(1,("perm %d tag %d id %d",ace->e_perm,ace->e_tag,ace->e_id)); */ | |
2682 | ||
2683 | return; | |
2684 | } | |
2685 | ||
2686 | /* Convert ACL from CIFS POSIX wire format to local Linux POSIX ACL xattr */ | |
2687 | static int cifs_copy_posix_acl(char *trgt, char *src, const int buflen, | |
2688 | const int acl_type, const int size_of_data_area) | |
2689 | { | |
2690 | int size = 0; | |
2691 | int i; | |
2692 | __u16 count; | |
2693 | struct cifs_posix_ace *pACE; | |
2694 | struct cifs_posix_acl *cifs_acl = (struct cifs_posix_acl *)src; | |
2695 | posix_acl_xattr_header *local_acl = (posix_acl_xattr_header *)trgt; | |
2696 | ||
2697 | if (le16_to_cpu(cifs_acl->version) != CIFS_ACL_VERSION) | |
2698 | return -EOPNOTSUPP; | |
2699 | ||
2700 | if (acl_type & ACL_TYPE_ACCESS) { | |
2701 | count = le16_to_cpu(cifs_acl->access_entry_count); | |
2702 | pACE = &cifs_acl->ace_array[0]; | |
2703 | size = sizeof(struct cifs_posix_acl); | |
2704 | size += sizeof(struct cifs_posix_ace) * count; | |
2705 | /* check if we would go beyond end of SMB */ | |
2706 | if (size_of_data_area < size) { | |
2707 | cFYI(1, ("bad CIFS POSIX ACL size %d vs. %d", | |
2708 | size_of_data_area, size)); | |
2709 | return -EINVAL; | |
2710 | } | |
2711 | } else if (acl_type & ACL_TYPE_DEFAULT) { | |
2712 | count = le16_to_cpu(cifs_acl->access_entry_count); | |
2713 | size = sizeof(struct cifs_posix_acl); | |
2714 | size += sizeof(struct cifs_posix_ace) * count; | |
2715 | /* skip past access ACEs to get to default ACEs */ | |
2716 | pACE = &cifs_acl->ace_array[count]; | |
2717 | count = le16_to_cpu(cifs_acl->default_entry_count); | |
2718 | size += sizeof(struct cifs_posix_ace) * count; | |
2719 | /* check if we would go beyond end of SMB */ | |
2720 | if (size_of_data_area < size) | |
2721 | return -EINVAL; | |
2722 | } else { | |
2723 | /* illegal type */ | |
2724 | return -EINVAL; | |
2725 | } | |
2726 | ||
2727 | size = posix_acl_xattr_size(count); | |
2728 | if ((buflen == 0) || (local_acl == NULL)) { | |
2729 | /* used to query ACL EA size */ | |
2730 | } else if (size > buflen) { | |
2731 | return -ERANGE; | |
2732 | } else /* buffer big enough */ { | |
2733 | local_acl->a_version = cpu_to_le32(POSIX_ACL_XATTR_VERSION); | |
2734 | for (i = 0; i < count ; i++) { | |
2735 | cifs_convert_ace(&local_acl->a_entries[i], pACE); | |
2736 | pACE++; | |
2737 | } | |
2738 | } | |
2739 | return size; | |
2740 | } | |
2741 | ||
2742 | static __u16 convert_ace_to_cifs_ace(struct cifs_posix_ace *cifs_ace, | |
2743 | const posix_acl_xattr_entry *local_ace) | |
2744 | { | |
2745 | __u16 rc = 0; /* 0 = ACL converted ok */ | |
2746 | ||
2747 | cifs_ace->cifs_e_perm = le16_to_cpu(local_ace->e_perm); | |
2748 | cifs_ace->cifs_e_tag = le16_to_cpu(local_ace->e_tag); | |
2749 | /* BB is there a better way to handle the large uid? */ | |
2750 | if (local_ace->e_id == cpu_to_le32(-1)) { | |
2751 | /* Probably no need to le convert -1 on any arch but can not hurt */ | |
2752 | cifs_ace->cifs_uid = cpu_to_le64(-1); | |
2753 | } else | |
2754 | cifs_ace->cifs_uid = cpu_to_le64(le32_to_cpu(local_ace->e_id)); | |
2755 | /*cFYI(1,("perm %d tag %d id %d",ace->e_perm,ace->e_tag,ace->e_id));*/ | |
2756 | return rc; | |
2757 | } | |
2758 | ||
2759 | /* Convert ACL from local Linux POSIX xattr to CIFS POSIX ACL wire format */ | |
2760 | static __u16 ACL_to_cifs_posix(char *parm_data, const char *pACL, | |
2761 | const int buflen, const int acl_type) | |
2762 | { | |
2763 | __u16 rc = 0; | |
2764 | struct cifs_posix_acl *cifs_acl = (struct cifs_posix_acl *)parm_data; | |
2765 | posix_acl_xattr_header *local_acl = (posix_acl_xattr_header *)pACL; | |
2766 | int count; | |
2767 | int i; | |
2768 | ||
2769 | if ((buflen == 0) || (pACL == NULL) || (cifs_acl == NULL)) | |
2770 | return 0; | |
2771 | ||
2772 | count = posix_acl_xattr_count((size_t)buflen); | |
2773 | cFYI(1, ("setting acl with %d entries from buf of length %d and " | |
2774 | "version of %d", | |
2775 | count, buflen, le32_to_cpu(local_acl->a_version))); | |
2776 | if (le32_to_cpu(local_acl->a_version) != 2) { | |
2777 | cFYI(1, ("unknown POSIX ACL version %d", | |
2778 | le32_to_cpu(local_acl->a_version))); | |
2779 | return 0; | |
2780 | } | |
2781 | cifs_acl->version = cpu_to_le16(1); | |
2782 | if (acl_type == ACL_TYPE_ACCESS) | |
2783 | cifs_acl->access_entry_count = cpu_to_le16(count); | |
2784 | else if (acl_type == ACL_TYPE_DEFAULT) | |
2785 | cifs_acl->default_entry_count = cpu_to_le16(count); | |
2786 | else { | |
2787 | cFYI(1, ("unknown ACL type %d", acl_type)); | |
2788 | return 0; | |
2789 | } | |
2790 | for (i = 0; i < count; i++) { | |
2791 | rc = convert_ace_to_cifs_ace(&cifs_acl->ace_array[i], | |
2792 | &local_acl->a_entries[i]); | |
2793 | if (rc != 0) { | |
2794 | /* ACE not converted */ | |
2795 | break; | |
2796 | } | |
2797 | } | |
2798 | if (rc == 0) { | |
2799 | rc = (__u16)(count * sizeof(struct cifs_posix_ace)); | |
2800 | rc += sizeof(struct cifs_posix_acl); | |
2801 | /* BB add check to make sure ACL does not overflow SMB */ | |
2802 | } | |
2803 | return rc; | |
2804 | } | |
2805 | ||
2806 | int | |
2807 | CIFSSMBGetPosixACL(const int xid, struct cifsTconInfo *tcon, | |
2808 | const unsigned char *searchName, | |
2809 | char *acl_inf, const int buflen, const int acl_type, | |
2810 | const struct nls_table *nls_codepage, int remap) | |
2811 | { | |
2812 | /* SMB_QUERY_POSIX_ACL */ | |
2813 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
2814 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
2815 | int rc = 0; | |
2816 | int bytes_returned; | |
2817 | int name_len; | |
2818 | __u16 params, byte_count; | |
2819 | ||
2820 | cFYI(1, ("In GetPosixACL (Unix) for path %s", searchName)); | |
2821 | ||
2822 | queryAclRetry: | |
2823 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2824 | (void **) &pSMBr); | |
2825 | if (rc) | |
2826 | return rc; | |
2827 | ||
2828 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2829 | name_len = | |
2830 | cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, | |
2831 | PATH_MAX, nls_codepage, remap); | |
2832 | name_len++; /* trailing null */ | |
2833 | name_len *= 2; | |
2834 | pSMB->FileName[name_len] = 0; | |
2835 | pSMB->FileName[name_len+1] = 0; | |
2836 | } else { /* BB improve the check for buffer overruns BB */ | |
2837 | name_len = strnlen(searchName, PATH_MAX); | |
2838 | name_len++; /* trailing null */ | |
2839 | strncpy(pSMB->FileName, searchName, name_len); | |
2840 | } | |
2841 | ||
2842 | params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; | |
2843 | pSMB->TotalDataCount = 0; | |
2844 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
2845 | /* BB find exact max data count below from sess structure BB */ | |
2846 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
2847 | pSMB->MaxSetupCount = 0; | |
2848 | pSMB->Reserved = 0; | |
2849 | pSMB->Flags = 0; | |
2850 | pSMB->Timeout = 0; | |
2851 | pSMB->Reserved2 = 0; | |
2852 | pSMB->ParameterOffset = cpu_to_le16( | |
2853 | offsetof(struct smb_com_transaction2_qpi_req, | |
2854 | InformationLevel) - 4); | |
2855 | pSMB->DataCount = 0; | |
2856 | pSMB->DataOffset = 0; | |
2857 | pSMB->SetupCount = 1; | |
2858 | pSMB->Reserved3 = 0; | |
2859 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
2860 | byte_count = params + 1 /* pad */ ; | |
2861 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
2862 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
2863 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_POSIX_ACL); | |
2864 | pSMB->Reserved4 = 0; | |
2865 | pSMB->hdr.smb_buf_length += byte_count; | |
2866 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
2867 | ||
2868 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2869 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
2870 | cifs_stats_inc(&tcon->num_acl_get); | |
2871 | if (rc) { | |
2872 | cFYI(1, ("Send error in Query POSIX ACL = %d", rc)); | |
2873 | } else { | |
2874 | /* decode response */ | |
2875 | ||
2876 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
2877 | if (rc || (pSMBr->ByteCount < 2)) | |
2878 | /* BB also check enough total bytes returned */ | |
2879 | rc = -EIO; /* bad smb */ | |
2880 | else { | |
2881 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
2882 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
2883 | rc = cifs_copy_posix_acl(acl_inf, | |
2884 | (char *)&pSMBr->hdr.Protocol+data_offset, | |
2885 | buflen, acl_type, count); | |
2886 | } | |
2887 | } | |
2888 | cifs_buf_release(pSMB); | |
2889 | if (rc == -EAGAIN) | |
2890 | goto queryAclRetry; | |
2891 | return rc; | |
2892 | } | |
2893 | ||
2894 | int | |
2895 | CIFSSMBSetPosixACL(const int xid, struct cifsTconInfo *tcon, | |
2896 | const unsigned char *fileName, | |
2897 | const char *local_acl, const int buflen, | |
2898 | const int acl_type, | |
2899 | const struct nls_table *nls_codepage, int remap) | |
2900 | { | |
2901 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
2902 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
2903 | char *parm_data; | |
2904 | int name_len; | |
2905 | int rc = 0; | |
2906 | int bytes_returned = 0; | |
2907 | __u16 params, byte_count, data_count, param_offset, offset; | |
2908 | ||
2909 | cFYI(1, ("In SetPosixACL (Unix) for path %s", fileName)); | |
2910 | setAclRetry: | |
2911 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2912 | (void **) &pSMBr); | |
2913 | if (rc) | |
2914 | return rc; | |
2915 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
2916 | name_len = | |
2917 | cifsConvertToUCS((__le16 *) pSMB->FileName, fileName, | |
2918 | PATH_MAX, nls_codepage, remap); | |
2919 | name_len++; /* trailing null */ | |
2920 | name_len *= 2; | |
2921 | } else { /* BB improve the check for buffer overruns BB */ | |
2922 | name_len = strnlen(fileName, PATH_MAX); | |
2923 | name_len++; /* trailing null */ | |
2924 | strncpy(pSMB->FileName, fileName, name_len); | |
2925 | } | |
2926 | params = 6 + name_len; | |
2927 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
2928 | pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB size from sess */ | |
2929 | pSMB->MaxSetupCount = 0; | |
2930 | pSMB->Reserved = 0; | |
2931 | pSMB->Flags = 0; | |
2932 | pSMB->Timeout = 0; | |
2933 | pSMB->Reserved2 = 0; | |
2934 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
2935 | InformationLevel) - 4; | |
2936 | offset = param_offset + params; | |
2937 | parm_data = ((char *) &pSMB->hdr.Protocol) + offset; | |
2938 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
2939 | ||
2940 | /* convert to on the wire format for POSIX ACL */ | |
2941 | data_count = ACL_to_cifs_posix(parm_data, local_acl, buflen, acl_type); | |
2942 | ||
2943 | if (data_count == 0) { | |
2944 | rc = -EOPNOTSUPP; | |
2945 | goto setACLerrorExit; | |
2946 | } | |
2947 | pSMB->DataOffset = cpu_to_le16(offset); | |
2948 | pSMB->SetupCount = 1; | |
2949 | pSMB->Reserved3 = 0; | |
2950 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
2951 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_POSIX_ACL); | |
2952 | byte_count = 3 /* pad */ + params + data_count; | |
2953 | pSMB->DataCount = cpu_to_le16(data_count); | |
2954 | pSMB->TotalDataCount = pSMB->DataCount; | |
2955 | pSMB->ParameterCount = cpu_to_le16(params); | |
2956 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
2957 | pSMB->Reserved4 = 0; | |
2958 | pSMB->hdr.smb_buf_length += byte_count; | |
2959 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
2960 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
2961 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
2962 | if (rc) | |
2963 | cFYI(1, ("Set POSIX ACL returned %d", rc)); | |
2964 | ||
2965 | setACLerrorExit: | |
2966 | cifs_buf_release(pSMB); | |
2967 | if (rc == -EAGAIN) | |
2968 | goto setAclRetry; | |
2969 | return rc; | |
2970 | } | |
2971 | ||
2972 | /* BB fix tabs in this function FIXME BB */ | |
2973 | int | |
2974 | CIFSGetExtAttr(const int xid, struct cifsTconInfo *tcon, | |
2975 | const int netfid, __u64 *pExtAttrBits, __u64 *pMask) | |
2976 | { | |
2977 | int rc = 0; | |
2978 | struct smb_t2_qfi_req *pSMB = NULL; | |
2979 | struct smb_t2_qfi_rsp *pSMBr = NULL; | |
2980 | int bytes_returned; | |
2981 | __u16 params, byte_count; | |
2982 | ||
2983 | cFYI(1, ("In GetExtAttr")); | |
2984 | if (tcon == NULL) | |
2985 | return -ENODEV; | |
2986 | ||
2987 | GetExtAttrRetry: | |
2988 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
2989 | (void **) &pSMBr); | |
2990 | if (rc) | |
2991 | return rc; | |
2992 | ||
2993 | params = 2 /* level */ + 2 /* fid */; | |
2994 | pSMB->t2.TotalDataCount = 0; | |
2995 | pSMB->t2.MaxParameterCount = cpu_to_le16(4); | |
2996 | /* BB find exact max data count below from sess structure BB */ | |
2997 | pSMB->t2.MaxDataCount = cpu_to_le16(4000); | |
2998 | pSMB->t2.MaxSetupCount = 0; | |
2999 | pSMB->t2.Reserved = 0; | |
3000 | pSMB->t2.Flags = 0; | |
3001 | pSMB->t2.Timeout = 0; | |
3002 | pSMB->t2.Reserved2 = 0; | |
3003 | pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req, | |
3004 | Fid) - 4); | |
3005 | pSMB->t2.DataCount = 0; | |
3006 | pSMB->t2.DataOffset = 0; | |
3007 | pSMB->t2.SetupCount = 1; | |
3008 | pSMB->t2.Reserved3 = 0; | |
3009 | pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION); | |
3010 | byte_count = params + 1 /* pad */ ; | |
3011 | pSMB->t2.TotalParameterCount = cpu_to_le16(params); | |
3012 | pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount; | |
3013 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_ATTR_FLAGS); | |
3014 | pSMB->Pad = 0; | |
3015 | pSMB->Fid = netfid; | |
3016 | pSMB->hdr.smb_buf_length += byte_count; | |
3017 | pSMB->t2.ByteCount = cpu_to_le16(byte_count); | |
3018 | ||
3019 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3020 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3021 | if (rc) { | |
3022 | cFYI(1, ("error %d in GetExtAttr", rc)); | |
3023 | } else { | |
3024 | /* decode response */ | |
3025 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
3026 | if (rc || (pSMBr->ByteCount < 2)) | |
3027 | /* BB also check enough total bytes returned */ | |
3028 | /* If rc should we check for EOPNOSUPP and | |
3029 | disable the srvino flag? or in caller? */ | |
3030 | rc = -EIO; /* bad smb */ | |
3031 | else { | |
3032 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3033 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
3034 | struct file_chattr_info *pfinfo; | |
3035 | /* BB Do we need a cast or hash here ? */ | |
3036 | if (count != 16) { | |
3037 | cFYI(1, ("Illegal size ret in GetExtAttr")); | |
3038 | rc = -EIO; | |
3039 | goto GetExtAttrOut; | |
3040 | } | |
3041 | pfinfo = (struct file_chattr_info *) | |
3042 | (data_offset + (char *) &pSMBr->hdr.Protocol); | |
3043 | *pExtAttrBits = le64_to_cpu(pfinfo->mode); | |
3044 | *pMask = le64_to_cpu(pfinfo->mask); | |
3045 | } | |
3046 | } | |
3047 | GetExtAttrOut: | |
3048 | cifs_buf_release(pSMB); | |
3049 | if (rc == -EAGAIN) | |
3050 | goto GetExtAttrRetry; | |
3051 | return rc; | |
3052 | } | |
3053 | ||
3054 | #endif /* CONFIG_POSIX */ | |
3055 | ||
3056 | #ifdef CONFIG_CIFS_EXPERIMENTAL | |
3057 | /* Get Security Descriptor (by handle) from remote server for a file or dir */ | |
3058 | int | |
3059 | CIFSSMBGetCIFSACL(const int xid, struct cifsTconInfo *tcon, __u16 fid, | |
3060 | struct cifs_ntsd **acl_inf, __u32 *pbuflen) | |
3061 | { | |
3062 | int rc = 0; | |
3063 | int buf_type = 0; | |
3064 | QUERY_SEC_DESC_REQ *pSMB; | |
3065 | struct kvec iov[1]; | |
3066 | ||
3067 | cFYI(1, ("GetCifsACL")); | |
3068 | ||
3069 | *pbuflen = 0; | |
3070 | *acl_inf = NULL; | |
3071 | ||
3072 | rc = smb_init_nttransact(NT_TRANSACT_QUERY_SECURITY_DESC, 0, | |
3073 | 8 /* parm len */, tcon, (void **) &pSMB); | |
3074 | if (rc) | |
3075 | return rc; | |
3076 | ||
3077 | pSMB->MaxParameterCount = cpu_to_le32(4); | |
3078 | /* BB TEST with big acls that might need to be e.g. larger than 16K */ | |
3079 | pSMB->MaxSetupCount = 0; | |
3080 | pSMB->Fid = fid; /* file handle always le */ | |
3081 | pSMB->AclFlags = cpu_to_le32(CIFS_ACL_OWNER | CIFS_ACL_GROUP | | |
3082 | CIFS_ACL_DACL); | |
3083 | pSMB->ByteCount = cpu_to_le16(11); /* 3 bytes pad + 8 bytes parm */ | |
3084 | pSMB->hdr.smb_buf_length += 11; | |
3085 | iov[0].iov_base = (char *)pSMB; | |
3086 | iov[0].iov_len = pSMB->hdr.smb_buf_length + 4; | |
3087 | ||
3088 | rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovec */, &buf_type, | |
3089 | CIFS_STD_OP); | |
3090 | cifs_stats_inc(&tcon->num_acl_get); | |
3091 | if (rc) { | |
3092 | cFYI(1, ("Send error in QuerySecDesc = %d", rc)); | |
3093 | } else { /* decode response */ | |
3094 | __le32 *parm; | |
3095 | __u32 parm_len; | |
3096 | __u32 acl_len; | |
3097 | struct smb_com_ntransact_rsp *pSMBr; | |
3098 | char *pdata; | |
3099 | ||
3100 | /* validate_nttransact */ | |
3101 | rc = validate_ntransact(iov[0].iov_base, (char **)&parm, | |
3102 | &pdata, &parm_len, pbuflen); | |
3103 | if (rc) | |
3104 | goto qsec_out; | |
3105 | pSMBr = (struct smb_com_ntransact_rsp *)iov[0].iov_base; | |
3106 | ||
3107 | cFYI(1, ("smb %p parm %p data %p", pSMBr, parm, *acl_inf)); | |
3108 | ||
3109 | if (le32_to_cpu(pSMBr->ParameterCount) != 4) { | |
3110 | rc = -EIO; /* bad smb */ | |
3111 | *pbuflen = 0; | |
3112 | goto qsec_out; | |
3113 | } | |
3114 | ||
3115 | /* BB check that data area is minimum length and as big as acl_len */ | |
3116 | ||
3117 | acl_len = le32_to_cpu(*parm); | |
3118 | if (acl_len != *pbuflen) { | |
3119 | cERROR(1, ("acl length %d does not match %d", | |
3120 | acl_len, *pbuflen)); | |
3121 | if (*pbuflen > acl_len) | |
3122 | *pbuflen = acl_len; | |
3123 | } | |
3124 | ||
3125 | /* check if buffer is big enough for the acl | |
3126 | header followed by the smallest SID */ | |
3127 | if ((*pbuflen < sizeof(struct cifs_ntsd) + 8) || | |
3128 | (*pbuflen >= 64 * 1024)) { | |
3129 | cERROR(1, ("bad acl length %d", *pbuflen)); | |
3130 | rc = -EINVAL; | |
3131 | *pbuflen = 0; | |
3132 | } else { | |
3133 | *acl_inf = kmalloc(*pbuflen, GFP_KERNEL); | |
3134 | if (*acl_inf == NULL) { | |
3135 | *pbuflen = 0; | |
3136 | rc = -ENOMEM; | |
3137 | } | |
3138 | memcpy(*acl_inf, pdata, *pbuflen); | |
3139 | } | |
3140 | } | |
3141 | qsec_out: | |
3142 | if (buf_type == CIFS_SMALL_BUFFER) | |
3143 | cifs_small_buf_release(iov[0].iov_base); | |
3144 | else if (buf_type == CIFS_LARGE_BUFFER) | |
3145 | cifs_buf_release(iov[0].iov_base); | |
3146 | /* cifs_small_buf_release(pSMB); */ /* Freed earlier now in SendReceive2 */ | |
3147 | return rc; | |
3148 | } | |
3149 | ||
3150 | int | |
3151 | CIFSSMBSetCIFSACL(const int xid, struct cifsTconInfo *tcon, __u16 fid, | |
3152 | struct cifs_ntsd *pntsd, __u32 acllen) | |
3153 | { | |
3154 | __u16 byte_count, param_count, data_count, param_offset, data_offset; | |
3155 | int rc = 0; | |
3156 | int bytes_returned = 0; | |
3157 | SET_SEC_DESC_REQ *pSMB = NULL; | |
3158 | NTRANSACT_RSP *pSMBr = NULL; | |
3159 | ||
3160 | setCifsAclRetry: | |
3161 | rc = smb_init(SMB_COM_NT_TRANSACT, 19, tcon, (void **) &pSMB, | |
3162 | (void **) &pSMBr); | |
3163 | if (rc) | |
3164 | return (rc); | |
3165 | ||
3166 | pSMB->MaxSetupCount = 0; | |
3167 | pSMB->Reserved = 0; | |
3168 | ||
3169 | param_count = 8; | |
3170 | param_offset = offsetof(struct smb_com_transaction_ssec_req, Fid) - 4; | |
3171 | data_count = acllen; | |
3172 | data_offset = param_offset + param_count; | |
3173 | byte_count = 3 /* pad */ + param_count; | |
3174 | ||
3175 | pSMB->DataCount = cpu_to_le32(data_count); | |
3176 | pSMB->TotalDataCount = pSMB->DataCount; | |
3177 | pSMB->MaxParameterCount = cpu_to_le32(4); | |
3178 | pSMB->MaxDataCount = cpu_to_le32(16384); | |
3179 | pSMB->ParameterCount = cpu_to_le32(param_count); | |
3180 | pSMB->ParameterOffset = cpu_to_le32(param_offset); | |
3181 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
3182 | pSMB->DataOffset = cpu_to_le32(data_offset); | |
3183 | pSMB->SetupCount = 0; | |
3184 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_SET_SECURITY_DESC); | |
3185 | pSMB->ByteCount = cpu_to_le16(byte_count+data_count); | |
3186 | ||
3187 | pSMB->Fid = fid; /* file handle always le */ | |
3188 | pSMB->Reserved2 = 0; | |
3189 | pSMB->AclFlags = cpu_to_le32(CIFS_ACL_DACL); | |
3190 | ||
3191 | if (pntsd && acllen) { | |
3192 | memcpy((char *) &pSMBr->hdr.Protocol + data_offset, | |
3193 | (char *) pntsd, | |
3194 | acllen); | |
3195 | pSMB->hdr.smb_buf_length += (byte_count + data_count); | |
3196 | ||
3197 | } else | |
3198 | pSMB->hdr.smb_buf_length += byte_count; | |
3199 | ||
3200 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3201 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3202 | ||
3203 | cFYI(1, ("SetCIFSACL bytes_returned: %d, rc: %d", bytes_returned, rc)); | |
3204 | if (rc) | |
3205 | cFYI(1, ("Set CIFS ACL returned %d", rc)); | |
3206 | cifs_buf_release(pSMB); | |
3207 | ||
3208 | if (rc == -EAGAIN) | |
3209 | goto setCifsAclRetry; | |
3210 | ||
3211 | return (rc); | |
3212 | } | |
3213 | ||
3214 | #endif /* CONFIG_CIFS_EXPERIMENTAL */ | |
3215 | ||
3216 | /* Legacy Query Path Information call for lookup to old servers such | |
3217 | as Win9x/WinME */ | |
3218 | int SMBQueryInformation(const int xid, struct cifsTconInfo *tcon, | |
3219 | const unsigned char *searchName, | |
3220 | FILE_ALL_INFO *pFinfo, | |
3221 | const struct nls_table *nls_codepage, int remap) | |
3222 | { | |
3223 | QUERY_INFORMATION_REQ *pSMB; | |
3224 | QUERY_INFORMATION_RSP *pSMBr; | |
3225 | int rc = 0; | |
3226 | int bytes_returned; | |
3227 | int name_len; | |
3228 | ||
3229 | cFYI(1, ("In SMBQPath path %s", searchName)); | |
3230 | QInfRetry: | |
3231 | rc = smb_init(SMB_COM_QUERY_INFORMATION, 0, tcon, (void **) &pSMB, | |
3232 | (void **) &pSMBr); | |
3233 | if (rc) | |
3234 | return rc; | |
3235 | ||
3236 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3237 | name_len = | |
3238 | cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, | |
3239 | PATH_MAX, nls_codepage, remap); | |
3240 | name_len++; /* trailing null */ | |
3241 | name_len *= 2; | |
3242 | } else { | |
3243 | name_len = strnlen(searchName, PATH_MAX); | |
3244 | name_len++; /* trailing null */ | |
3245 | strncpy(pSMB->FileName, searchName, name_len); | |
3246 | } | |
3247 | pSMB->BufferFormat = 0x04; | |
3248 | name_len++; /* account for buffer type byte */ | |
3249 | pSMB->hdr.smb_buf_length += (__u16) name_len; | |
3250 | pSMB->ByteCount = cpu_to_le16(name_len); | |
3251 | ||
3252 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3253 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3254 | if (rc) { | |
3255 | cFYI(1, ("Send error in QueryInfo = %d", rc)); | |
3256 | } else if (pFinfo) { | |
3257 | struct timespec ts; | |
3258 | __u32 time = le32_to_cpu(pSMBr->last_write_time); | |
3259 | ||
3260 | /* decode response */ | |
3261 | /* BB FIXME - add time zone adjustment BB */ | |
3262 | memset(pFinfo, 0, sizeof(FILE_ALL_INFO)); | |
3263 | ts.tv_nsec = 0; | |
3264 | ts.tv_sec = time; | |
3265 | /* decode time fields */ | |
3266 | pFinfo->ChangeTime = cpu_to_le64(cifs_UnixTimeToNT(ts)); | |
3267 | pFinfo->LastWriteTime = pFinfo->ChangeTime; | |
3268 | pFinfo->LastAccessTime = 0; | |
3269 | pFinfo->AllocationSize = | |
3270 | cpu_to_le64(le32_to_cpu(pSMBr->size)); | |
3271 | pFinfo->EndOfFile = pFinfo->AllocationSize; | |
3272 | pFinfo->Attributes = | |
3273 | cpu_to_le32(le16_to_cpu(pSMBr->attr)); | |
3274 | } else | |
3275 | rc = -EIO; /* bad buffer passed in */ | |
3276 | ||
3277 | cifs_buf_release(pSMB); | |
3278 | ||
3279 | if (rc == -EAGAIN) | |
3280 | goto QInfRetry; | |
3281 | ||
3282 | return rc; | |
3283 | } | |
3284 | ||
3285 | ||
3286 | ||
3287 | ||
3288 | int | |
3289 | CIFSSMBQPathInfo(const int xid, struct cifsTconInfo *tcon, | |
3290 | const unsigned char *searchName, | |
3291 | FILE_ALL_INFO *pFindData, | |
3292 | int legacy /* old style infolevel */, | |
3293 | const struct nls_table *nls_codepage, int remap) | |
3294 | { | |
3295 | /* level 263 SMB_QUERY_FILE_ALL_INFO */ | |
3296 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
3297 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
3298 | int rc = 0; | |
3299 | int bytes_returned; | |
3300 | int name_len; | |
3301 | __u16 params, byte_count; | |
3302 | ||
3303 | /* cFYI(1, ("In QPathInfo path %s", searchName)); */ | |
3304 | QPathInfoRetry: | |
3305 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3306 | (void **) &pSMBr); | |
3307 | if (rc) | |
3308 | return rc; | |
3309 | ||
3310 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3311 | name_len = | |
3312 | cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, | |
3313 | PATH_MAX, nls_codepage, remap); | |
3314 | name_len++; /* trailing null */ | |
3315 | name_len *= 2; | |
3316 | } else { /* BB improve the check for buffer overruns BB */ | |
3317 | name_len = strnlen(searchName, PATH_MAX); | |
3318 | name_len++; /* trailing null */ | |
3319 | strncpy(pSMB->FileName, searchName, name_len); | |
3320 | } | |
3321 | ||
3322 | params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */; | |
3323 | pSMB->TotalDataCount = 0; | |
3324 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
3325 | pSMB->MaxDataCount = cpu_to_le16(4000); /* BB find exact max SMB PDU from sess structure BB */ | |
3326 | pSMB->MaxSetupCount = 0; | |
3327 | pSMB->Reserved = 0; | |
3328 | pSMB->Flags = 0; | |
3329 | pSMB->Timeout = 0; | |
3330 | pSMB->Reserved2 = 0; | |
3331 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
3332 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); | |
3333 | pSMB->DataCount = 0; | |
3334 | pSMB->DataOffset = 0; | |
3335 | pSMB->SetupCount = 1; | |
3336 | pSMB->Reserved3 = 0; | |
3337 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
3338 | byte_count = params + 1 /* pad */ ; | |
3339 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3340 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3341 | if (legacy) | |
3342 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_STANDARD); | |
3343 | else | |
3344 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_ALL_INFO); | |
3345 | pSMB->Reserved4 = 0; | |
3346 | pSMB->hdr.smb_buf_length += byte_count; | |
3347 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
3348 | ||
3349 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3350 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3351 | if (rc) { | |
3352 | cFYI(1, ("Send error in QPathInfo = %d", rc)); | |
3353 | } else { /* decode response */ | |
3354 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
3355 | ||
3356 | if (rc) /* BB add auto retry on EOPNOTSUPP? */ | |
3357 | rc = -EIO; | |
3358 | else if (!legacy && (pSMBr->ByteCount < 40)) | |
3359 | rc = -EIO; /* bad smb */ | |
3360 | else if (legacy && (pSMBr->ByteCount < 24)) | |
3361 | rc = -EIO; /* 24 or 26 expected but we do not read | |
3362 | last field */ | |
3363 | else if (pFindData) { | |
3364 | int size; | |
3365 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3366 | ||
3367 | /* On legacy responses we do not read the last field, | |
3368 | EAsize, fortunately since it varies by subdialect and | |
3369 | also note it differs on Set vs. Get, ie two bytes or 4 | |
3370 | bytes depending but we don't care here */ | |
3371 | if (legacy) | |
3372 | size = sizeof(FILE_INFO_STANDARD); | |
3373 | else | |
3374 | size = sizeof(FILE_ALL_INFO); | |
3375 | memcpy((char *) pFindData, | |
3376 | (char *) &pSMBr->hdr.Protocol + | |
3377 | data_offset, size); | |
3378 | } else | |
3379 | rc = -ENOMEM; | |
3380 | } | |
3381 | cifs_buf_release(pSMB); | |
3382 | if (rc == -EAGAIN) | |
3383 | goto QPathInfoRetry; | |
3384 | ||
3385 | return rc; | |
3386 | } | |
3387 | ||
3388 | int | |
3389 | CIFSSMBUnixQPathInfo(const int xid, struct cifsTconInfo *tcon, | |
3390 | const unsigned char *searchName, | |
3391 | FILE_UNIX_BASIC_INFO * pFindData, | |
3392 | const struct nls_table *nls_codepage, int remap) | |
3393 | { | |
3394 | /* SMB_QUERY_FILE_UNIX_BASIC */ | |
3395 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
3396 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
3397 | int rc = 0; | |
3398 | int bytes_returned = 0; | |
3399 | int name_len; | |
3400 | __u16 params, byte_count; | |
3401 | ||
3402 | cFYI(1, ("In QPathInfo (Unix) the path %s", searchName)); | |
3403 | UnixQPathInfoRetry: | |
3404 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3405 | (void **) &pSMBr); | |
3406 | if (rc) | |
3407 | return rc; | |
3408 | ||
3409 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3410 | name_len = | |
3411 | cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, | |
3412 | PATH_MAX, nls_codepage, remap); | |
3413 | name_len++; /* trailing null */ | |
3414 | name_len *= 2; | |
3415 | } else { /* BB improve the check for buffer overruns BB */ | |
3416 | name_len = strnlen(searchName, PATH_MAX); | |
3417 | name_len++; /* trailing null */ | |
3418 | strncpy(pSMB->FileName, searchName, name_len); | |
3419 | } | |
3420 | ||
3421 | params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */; | |
3422 | pSMB->TotalDataCount = 0; | |
3423 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
3424 | /* BB find exact max SMB PDU from sess structure BB */ | |
3425 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
3426 | pSMB->MaxSetupCount = 0; | |
3427 | pSMB->Reserved = 0; | |
3428 | pSMB->Flags = 0; | |
3429 | pSMB->Timeout = 0; | |
3430 | pSMB->Reserved2 = 0; | |
3431 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
3432 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); | |
3433 | pSMB->DataCount = 0; | |
3434 | pSMB->DataOffset = 0; | |
3435 | pSMB->SetupCount = 1; | |
3436 | pSMB->Reserved3 = 0; | |
3437 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
3438 | byte_count = params + 1 /* pad */ ; | |
3439 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3440 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3441 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC); | |
3442 | pSMB->Reserved4 = 0; | |
3443 | pSMB->hdr.smb_buf_length += byte_count; | |
3444 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
3445 | ||
3446 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3447 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3448 | if (rc) { | |
3449 | cFYI(1, ("Send error in QPathInfo = %d", rc)); | |
3450 | } else { /* decode response */ | |
3451 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
3452 | ||
3453 | if (rc || (pSMBr->ByteCount < sizeof(FILE_UNIX_BASIC_INFO))) { | |
3454 | cERROR(1, ("Malformed FILE_UNIX_BASIC_INFO response.\n" | |
3455 | "Unix Extensions can be disabled on mount " | |
3456 | "by specifying the nosfu mount option.")); | |
3457 | rc = -EIO; /* bad smb */ | |
3458 | } else { | |
3459 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3460 | memcpy((char *) pFindData, | |
3461 | (char *) &pSMBr->hdr.Protocol + | |
3462 | data_offset, | |
3463 | sizeof(FILE_UNIX_BASIC_INFO)); | |
3464 | } | |
3465 | } | |
3466 | cifs_buf_release(pSMB); | |
3467 | if (rc == -EAGAIN) | |
3468 | goto UnixQPathInfoRetry; | |
3469 | ||
3470 | return rc; | |
3471 | } | |
3472 | ||
3473 | /* xid, tcon, searchName and codepage are input parms, rest are returned */ | |
3474 | int | |
3475 | CIFSFindFirst(const int xid, struct cifsTconInfo *tcon, | |
3476 | const char *searchName, | |
3477 | const struct nls_table *nls_codepage, | |
3478 | __u16 *pnetfid, | |
3479 | struct cifs_search_info *psrch_inf, int remap, const char dirsep) | |
3480 | { | |
3481 | /* level 257 SMB_ */ | |
3482 | TRANSACTION2_FFIRST_REQ *pSMB = NULL; | |
3483 | TRANSACTION2_FFIRST_RSP *pSMBr = NULL; | |
3484 | T2_FFIRST_RSP_PARMS *parms; | |
3485 | int rc = 0; | |
3486 | int bytes_returned = 0; | |
3487 | int name_len; | |
3488 | __u16 params, byte_count; | |
3489 | ||
3490 | cFYI(1, ("In FindFirst for %s", searchName)); | |
3491 | ||
3492 | findFirstRetry: | |
3493 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3494 | (void **) &pSMBr); | |
3495 | if (rc) | |
3496 | return rc; | |
3497 | ||
3498 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3499 | name_len = | |
3500 | cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, | |
3501 | PATH_MAX, nls_codepage, remap); | |
3502 | /* We can not add the asterik earlier in case | |
3503 | it got remapped to 0xF03A as if it were part of the | |
3504 | directory name instead of a wildcard */ | |
3505 | name_len *= 2; | |
3506 | pSMB->FileName[name_len] = dirsep; | |
3507 | pSMB->FileName[name_len+1] = 0; | |
3508 | pSMB->FileName[name_len+2] = '*'; | |
3509 | pSMB->FileName[name_len+3] = 0; | |
3510 | name_len += 4; /* now the trailing null */ | |
3511 | pSMB->FileName[name_len] = 0; /* null terminate just in case */ | |
3512 | pSMB->FileName[name_len+1] = 0; | |
3513 | name_len += 2; | |
3514 | } else { /* BB add check for overrun of SMB buf BB */ | |
3515 | name_len = strnlen(searchName, PATH_MAX); | |
3516 | /* BB fix here and in unicode clause above ie | |
3517 | if (name_len > buffersize-header) | |
3518 | free buffer exit; BB */ | |
3519 | strncpy(pSMB->FileName, searchName, name_len); | |
3520 | pSMB->FileName[name_len] = dirsep; | |
3521 | pSMB->FileName[name_len+1] = '*'; | |
3522 | pSMB->FileName[name_len+2] = 0; | |
3523 | name_len += 3; | |
3524 | } | |
3525 | ||
3526 | params = 12 + name_len /* includes null */ ; | |
3527 | pSMB->TotalDataCount = 0; /* no EAs */ | |
3528 | pSMB->MaxParameterCount = cpu_to_le16(10); | |
3529 | pSMB->MaxDataCount = cpu_to_le16((tcon->ses->server->maxBuf - | |
3530 | MAX_CIFS_HDR_SIZE) & 0xFFFFFF00); | |
3531 | pSMB->MaxSetupCount = 0; | |
3532 | pSMB->Reserved = 0; | |
3533 | pSMB->Flags = 0; | |
3534 | pSMB->Timeout = 0; | |
3535 | pSMB->Reserved2 = 0; | |
3536 | byte_count = params + 1 /* pad */ ; | |
3537 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3538 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3539 | pSMB->ParameterOffset = cpu_to_le16( | |
3540 | offsetof(struct smb_com_transaction2_ffirst_req, SearchAttributes) | |
3541 | - 4); | |
3542 | pSMB->DataCount = 0; | |
3543 | pSMB->DataOffset = 0; | |
3544 | pSMB->SetupCount = 1; /* one byte, no need to make endian neutral */ | |
3545 | pSMB->Reserved3 = 0; | |
3546 | pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_FIRST); | |
3547 | pSMB->SearchAttributes = | |
3548 | cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM | | |
3549 | ATTR_DIRECTORY); | |
3550 | pSMB->SearchCount = cpu_to_le16(CIFSMaxBufSize/sizeof(FILE_UNIX_INFO)); | |
3551 | pSMB->SearchFlags = cpu_to_le16(CIFS_SEARCH_CLOSE_AT_END | | |
3552 | CIFS_SEARCH_RETURN_RESUME); | |
3553 | pSMB->InformationLevel = cpu_to_le16(psrch_inf->info_level); | |
3554 | ||
3555 | /* BB what should we set StorageType to? Does it matter? BB */ | |
3556 | pSMB->SearchStorageType = 0; | |
3557 | pSMB->hdr.smb_buf_length += byte_count; | |
3558 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
3559 | ||
3560 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3561 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3562 | cifs_stats_inc(&tcon->num_ffirst); | |
3563 | ||
3564 | if (rc) {/* BB add logic to retry regular search if Unix search | |
3565 | rejected unexpectedly by server */ | |
3566 | /* BB Add code to handle unsupported level rc */ | |
3567 | cFYI(1, ("Error in FindFirst = %d", rc)); | |
3568 | ||
3569 | cifs_buf_release(pSMB); | |
3570 | ||
3571 | /* BB eventually could optimize out free and realloc of buf */ | |
3572 | /* for this case */ | |
3573 | if (rc == -EAGAIN) | |
3574 | goto findFirstRetry; | |
3575 | } else { /* decode response */ | |
3576 | /* BB remember to free buffer if error BB */ | |
3577 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
3578 | if (rc == 0) { | |
3579 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) | |
3580 | psrch_inf->unicode = true; | |
3581 | else | |
3582 | psrch_inf->unicode = false; | |
3583 | ||
3584 | psrch_inf->ntwrk_buf_start = (char *)pSMBr; | |
3585 | psrch_inf->smallBuf = 0; | |
3586 | psrch_inf->srch_entries_start = | |
3587 | (char *) &pSMBr->hdr.Protocol + | |
3588 | le16_to_cpu(pSMBr->t2.DataOffset); | |
3589 | parms = (T2_FFIRST_RSP_PARMS *)((char *) &pSMBr->hdr.Protocol + | |
3590 | le16_to_cpu(pSMBr->t2.ParameterOffset)); | |
3591 | ||
3592 | if (parms->EndofSearch) | |
3593 | psrch_inf->endOfSearch = true; | |
3594 | else | |
3595 | psrch_inf->endOfSearch = false; | |
3596 | ||
3597 | psrch_inf->entries_in_buffer = | |
3598 | le16_to_cpu(parms->SearchCount); | |
3599 | psrch_inf->index_of_last_entry = 2 /* skip . and .. */ + | |
3600 | psrch_inf->entries_in_buffer; | |
3601 | *pnetfid = parms->SearchHandle; | |
3602 | } else { | |
3603 | cifs_buf_release(pSMB); | |
3604 | } | |
3605 | } | |
3606 | ||
3607 | return rc; | |
3608 | } | |
3609 | ||
3610 | int CIFSFindNext(const int xid, struct cifsTconInfo *tcon, | |
3611 | __u16 searchHandle, struct cifs_search_info *psrch_inf) | |
3612 | { | |
3613 | TRANSACTION2_FNEXT_REQ *pSMB = NULL; | |
3614 | TRANSACTION2_FNEXT_RSP *pSMBr = NULL; | |
3615 | T2_FNEXT_RSP_PARMS *parms; | |
3616 | char *response_data; | |
3617 | int rc = 0; | |
3618 | int bytes_returned, name_len; | |
3619 | __u16 params, byte_count; | |
3620 | ||
3621 | cFYI(1, ("In FindNext")); | |
3622 | ||
3623 | if (psrch_inf->endOfSearch) | |
3624 | return -ENOENT; | |
3625 | ||
3626 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3627 | (void **) &pSMBr); | |
3628 | if (rc) | |
3629 | return rc; | |
3630 | ||
3631 | params = 14; /* includes 2 bytes of null string, converted to LE below*/ | |
3632 | byte_count = 0; | |
3633 | pSMB->TotalDataCount = 0; /* no EAs */ | |
3634 | pSMB->MaxParameterCount = cpu_to_le16(8); | |
3635 | pSMB->MaxDataCount = | |
3636 | cpu_to_le16((tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE) & | |
3637 | 0xFFFFFF00); | |
3638 | pSMB->MaxSetupCount = 0; | |
3639 | pSMB->Reserved = 0; | |
3640 | pSMB->Flags = 0; | |
3641 | pSMB->Timeout = 0; | |
3642 | pSMB->Reserved2 = 0; | |
3643 | pSMB->ParameterOffset = cpu_to_le16( | |
3644 | offsetof(struct smb_com_transaction2_fnext_req,SearchHandle) - 4); | |
3645 | pSMB->DataCount = 0; | |
3646 | pSMB->DataOffset = 0; | |
3647 | pSMB->SetupCount = 1; | |
3648 | pSMB->Reserved3 = 0; | |
3649 | pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_NEXT); | |
3650 | pSMB->SearchHandle = searchHandle; /* always kept as le */ | |
3651 | pSMB->SearchCount = | |
3652 | cpu_to_le16(CIFSMaxBufSize / sizeof(FILE_UNIX_INFO)); | |
3653 | pSMB->InformationLevel = cpu_to_le16(psrch_inf->info_level); | |
3654 | pSMB->ResumeKey = psrch_inf->resume_key; | |
3655 | pSMB->SearchFlags = | |
3656 | cpu_to_le16(CIFS_SEARCH_CLOSE_AT_END | CIFS_SEARCH_RETURN_RESUME); | |
3657 | ||
3658 | name_len = psrch_inf->resume_name_len; | |
3659 | params += name_len; | |
3660 | if (name_len < PATH_MAX) { | |
3661 | memcpy(pSMB->ResumeFileName, psrch_inf->presume_name, name_len); | |
3662 | byte_count += name_len; | |
3663 | /* 14 byte parm len above enough for 2 byte null terminator */ | |
3664 | pSMB->ResumeFileName[name_len] = 0; | |
3665 | pSMB->ResumeFileName[name_len+1] = 0; | |
3666 | } else { | |
3667 | rc = -EINVAL; | |
3668 | goto FNext2_err_exit; | |
3669 | } | |
3670 | byte_count = params + 1 /* pad */ ; | |
3671 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3672 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3673 | pSMB->hdr.smb_buf_length += byte_count; | |
3674 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
3675 | ||
3676 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3677 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3678 | cifs_stats_inc(&tcon->num_fnext); | |
3679 | if (rc) { | |
3680 | if (rc == -EBADF) { | |
3681 | psrch_inf->endOfSearch = true; | |
3682 | cifs_buf_release(pSMB); | |
3683 | rc = 0; /* search probably was closed at end of search*/ | |
3684 | } else | |
3685 | cFYI(1, ("FindNext returned = %d", rc)); | |
3686 | } else { /* decode response */ | |
3687 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
3688 | ||
3689 | if (rc == 0) { | |
3690 | /* BB fixme add lock for file (srch_info) struct here */ | |
3691 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) | |
3692 | psrch_inf->unicode = true; | |
3693 | else | |
3694 | psrch_inf->unicode = false; | |
3695 | response_data = (char *) &pSMBr->hdr.Protocol + | |
3696 | le16_to_cpu(pSMBr->t2.ParameterOffset); | |
3697 | parms = (T2_FNEXT_RSP_PARMS *)response_data; | |
3698 | response_data = (char *)&pSMBr->hdr.Protocol + | |
3699 | le16_to_cpu(pSMBr->t2.DataOffset); | |
3700 | if (psrch_inf->smallBuf) | |
3701 | cifs_small_buf_release( | |
3702 | psrch_inf->ntwrk_buf_start); | |
3703 | else | |
3704 | cifs_buf_release(psrch_inf->ntwrk_buf_start); | |
3705 | psrch_inf->srch_entries_start = response_data; | |
3706 | psrch_inf->ntwrk_buf_start = (char *)pSMB; | |
3707 | psrch_inf->smallBuf = 0; | |
3708 | if (parms->EndofSearch) | |
3709 | psrch_inf->endOfSearch = true; | |
3710 | else | |
3711 | psrch_inf->endOfSearch = false; | |
3712 | psrch_inf->entries_in_buffer = | |
3713 | le16_to_cpu(parms->SearchCount); | |
3714 | psrch_inf->index_of_last_entry += | |
3715 | psrch_inf->entries_in_buffer; | |
3716 | /* cFYI(1,("fnxt2 entries in buf %d index_of_last %d", | |
3717 | psrch_inf->entries_in_buffer, psrch_inf->index_of_last_entry)); */ | |
3718 | ||
3719 | /* BB fixme add unlock here */ | |
3720 | } | |
3721 | ||
3722 | } | |
3723 | ||
3724 | /* BB On error, should we leave previous search buf (and count and | |
3725 | last entry fields) intact or free the previous one? */ | |
3726 | ||
3727 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
3728 | since file handle passed in no longer valid */ | |
3729 | FNext2_err_exit: | |
3730 | if (rc != 0) | |
3731 | cifs_buf_release(pSMB); | |
3732 | return rc; | |
3733 | } | |
3734 | ||
3735 | int | |
3736 | CIFSFindClose(const int xid, struct cifsTconInfo *tcon, | |
3737 | const __u16 searchHandle) | |
3738 | { | |
3739 | int rc = 0; | |
3740 | FINDCLOSE_REQ *pSMB = NULL; | |
3741 | ||
3742 | cFYI(1, ("In CIFSSMBFindClose")); | |
3743 | rc = small_smb_init(SMB_COM_FIND_CLOSE2, 1, tcon, (void **)&pSMB); | |
3744 | ||
3745 | /* no sense returning error if session restarted | |
3746 | as file handle has been closed */ | |
3747 | if (rc == -EAGAIN) | |
3748 | return 0; | |
3749 | if (rc) | |
3750 | return rc; | |
3751 | ||
3752 | pSMB->FileID = searchHandle; | |
3753 | pSMB->ByteCount = 0; | |
3754 | rc = SendReceiveNoRsp(xid, tcon->ses, (struct smb_hdr *) pSMB, 0); | |
3755 | if (rc) | |
3756 | cERROR(1, ("Send error in FindClose = %d", rc)); | |
3757 | ||
3758 | cifs_stats_inc(&tcon->num_fclose); | |
3759 | ||
3760 | /* Since session is dead, search handle closed on server already */ | |
3761 | if (rc == -EAGAIN) | |
3762 | rc = 0; | |
3763 | ||
3764 | return rc; | |
3765 | } | |
3766 | ||
3767 | int | |
3768 | CIFSGetSrvInodeNumber(const int xid, struct cifsTconInfo *tcon, | |
3769 | const unsigned char *searchName, | |
3770 | __u64 *inode_number, | |
3771 | const struct nls_table *nls_codepage, int remap) | |
3772 | { | |
3773 | int rc = 0; | |
3774 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
3775 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
3776 | int name_len, bytes_returned; | |
3777 | __u16 params, byte_count; | |
3778 | ||
3779 | cFYI(1, ("In GetSrvInodeNum for %s", searchName)); | |
3780 | if (tcon == NULL) | |
3781 | return -ENODEV; | |
3782 | ||
3783 | GetInodeNumberRetry: | |
3784 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
3785 | (void **) &pSMBr); | |
3786 | if (rc) | |
3787 | return rc; | |
3788 | ||
3789 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
3790 | name_len = | |
3791 | cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, | |
3792 | PATH_MAX, nls_codepage, remap); | |
3793 | name_len++; /* trailing null */ | |
3794 | name_len *= 2; | |
3795 | } else { /* BB improve the check for buffer overruns BB */ | |
3796 | name_len = strnlen(searchName, PATH_MAX); | |
3797 | name_len++; /* trailing null */ | |
3798 | strncpy(pSMB->FileName, searchName, name_len); | |
3799 | } | |
3800 | ||
3801 | params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ; | |
3802 | pSMB->TotalDataCount = 0; | |
3803 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
3804 | /* BB find exact max data count below from sess structure BB */ | |
3805 | pSMB->MaxDataCount = cpu_to_le16(4000); | |
3806 | pSMB->MaxSetupCount = 0; | |
3807 | pSMB->Reserved = 0; | |
3808 | pSMB->Flags = 0; | |
3809 | pSMB->Timeout = 0; | |
3810 | pSMB->Reserved2 = 0; | |
3811 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
3812 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); | |
3813 | pSMB->DataCount = 0; | |
3814 | pSMB->DataOffset = 0; | |
3815 | pSMB->SetupCount = 1; | |
3816 | pSMB->Reserved3 = 0; | |
3817 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
3818 | byte_count = params + 1 /* pad */ ; | |
3819 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
3820 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
3821 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_INTERNAL_INFO); | |
3822 | pSMB->Reserved4 = 0; | |
3823 | pSMB->hdr.smb_buf_length += byte_count; | |
3824 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
3825 | ||
3826 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
3827 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3828 | if (rc) { | |
3829 | cFYI(1, ("error %d in QueryInternalInfo", rc)); | |
3830 | } else { | |
3831 | /* decode response */ | |
3832 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
3833 | if (rc || (pSMBr->ByteCount < 2)) | |
3834 | /* BB also check enough total bytes returned */ | |
3835 | /* If rc should we check for EOPNOSUPP and | |
3836 | disable the srvino flag? or in caller? */ | |
3837 | rc = -EIO; /* bad smb */ | |
3838 | else { | |
3839 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3840 | __u16 count = le16_to_cpu(pSMBr->t2.DataCount); | |
3841 | struct file_internal_info *pfinfo; | |
3842 | /* BB Do we need a cast or hash here ? */ | |
3843 | if (count < 8) { | |
3844 | cFYI(1, ("Illegal size ret in QryIntrnlInf")); | |
3845 | rc = -EIO; | |
3846 | goto GetInodeNumOut; | |
3847 | } | |
3848 | pfinfo = (struct file_internal_info *) | |
3849 | (data_offset + (char *) &pSMBr->hdr.Protocol); | |
3850 | *inode_number = pfinfo->UniqueId; | |
3851 | } | |
3852 | } | |
3853 | GetInodeNumOut: | |
3854 | cifs_buf_release(pSMB); | |
3855 | if (rc == -EAGAIN) | |
3856 | goto GetInodeNumberRetry; | |
3857 | return rc; | |
3858 | } | |
3859 | ||
3860 | int | |
3861 | CIFSGetDFSRefer(const int xid, struct cifsSesInfo *ses, | |
3862 | const unsigned char *searchName, | |
3863 | unsigned char **targetUNCs, | |
3864 | unsigned int *number_of_UNC_in_array, | |
3865 | const struct nls_table *nls_codepage, int remap) | |
3866 | { | |
3867 | /* TRANS2_GET_DFS_REFERRAL */ | |
3868 | TRANSACTION2_GET_DFS_REFER_REQ *pSMB = NULL; | |
3869 | TRANSACTION2_GET_DFS_REFER_RSP *pSMBr = NULL; | |
3870 | struct dfs_referral_level_3 *referrals = NULL; | |
3871 | int rc = 0; | |
3872 | int bytes_returned; | |
3873 | int name_len; | |
3874 | unsigned int i; | |
3875 | char *temp; | |
3876 | __u16 params, byte_count; | |
3877 | *number_of_UNC_in_array = 0; | |
3878 | *targetUNCs = NULL; | |
3879 | ||
3880 | cFYI(1, ("In GetDFSRefer the path %s", searchName)); | |
3881 | if (ses == NULL) | |
3882 | return -ENODEV; | |
3883 | getDFSRetry: | |
3884 | rc = smb_init(SMB_COM_TRANSACTION2, 15, NULL, (void **) &pSMB, | |
3885 | (void **) &pSMBr); | |
3886 | if (rc) | |
3887 | return rc; | |
3888 | ||
3889 | /* server pointer checked in called function, | |
3890 | but should never be null here anyway */ | |
3891 | pSMB->hdr.Mid = GetNextMid(ses->server); | |
3892 | pSMB->hdr.Tid = ses->ipc_tid; | |
3893 | pSMB->hdr.Uid = ses->Suid; | |
3894 | if (ses->capabilities & CAP_STATUS32) | |
3895 | pSMB->hdr.Flags2 |= SMBFLG2_ERR_STATUS; | |
3896 | if (ses->capabilities & CAP_DFS) | |
3897 | pSMB->hdr.Flags2 |= SMBFLG2_DFS; | |
3898 | ||
3899 | if (ses->capabilities & CAP_UNICODE) { | |
3900 | pSMB->hdr.Flags2 |= SMBFLG2_UNICODE; | |
3901 | name_len = | |
3902 | cifsConvertToUCS((__le16 *) pSMB->RequestFileName, | |
3903 | searchName, PATH_MAX, nls_codepage, remap); | |
3904 | name_len++; /* trailing null */ | |
3905 | name_len *= 2; | |
3906 | } else { /* BB improve the check for buffer overruns BB */ | |
3907 | name_len = strnlen(searchName, PATH_MAX); | |
3908 | name_len++; /* trailing null */ | |
3909 | strncpy(pSMB->RequestFileName, searchName, name_len); | |
3910 | } | |
3911 | ||
3912 | if (ses->server) { | |
3913 | if (ses->server->secMode & | |
3914 | (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) | |
3915 | pSMB->hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE; | |
3916 | } | |
3917 | ||
3918 | pSMB->hdr.Uid = ses->Suid; | |
3919 | ||
3920 | params = 2 /* level */ + name_len /*includes null */ ; | |
3921 | pSMB->TotalDataCount = 0; | |
3922 | pSMB->DataCount = 0; | |
3923 | pSMB->DataOffset = 0; | |
3924 | pSMB->MaxParameterCount = 0; | |
3925 | pSMB->MaxDataCount = cpu_to_le16(4000); /* BB find exact max SMB PDU from sess structure BB */ | |
3926 | pSMB->MaxSetupCount = 0; | |
3927 | pSMB->Reserved = 0; | |
3928 | pSMB->Flags = 0; | |
3929 | pSMB->Timeout = 0; | |
3930 | pSMB->Reserved2 = 0; | |
3931 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
3932 | struct smb_com_transaction2_get_dfs_refer_req, MaxReferralLevel) - 4); | |
3933 | pSMB->SetupCount = 1; | |
3934 | pSMB->Reserved3 = 0; | |
3935 | pSMB->SubCommand = cpu_to_le16(TRANS2_GET_DFS_REFERRAL); | |
3936 | byte_count = params + 3 /* pad */ ; | |
3937 | pSMB->ParameterCount = cpu_to_le16(params); | |
3938 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
3939 | pSMB->MaxReferralLevel = cpu_to_le16(3); | |
3940 | pSMB->hdr.smb_buf_length += byte_count; | |
3941 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
3942 | ||
3943 | rc = SendReceive(xid, ses, (struct smb_hdr *) pSMB, | |
3944 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
3945 | if (rc) { | |
3946 | cFYI(1, ("Send error in GetDFSRefer = %d", rc)); | |
3947 | } else { /* decode response */ | |
3948 | /* BB Add logic to parse referrals here */ | |
3949 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
3950 | ||
3951 | /* BB Also check if enough total bytes returned? */ | |
3952 | if (rc || (pSMBr->ByteCount < 17)) | |
3953 | rc = -EIO; /* bad smb */ | |
3954 | else { | |
3955 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
3956 | __u16 data_count = le16_to_cpu(pSMBr->t2.DataCount); | |
3957 | ||
3958 | cFYI(1, | |
3959 | ("Decoding GetDFSRefer response BCC: %d Offset %d", | |
3960 | pSMBr->ByteCount, data_offset)); | |
3961 | referrals = | |
3962 | (struct dfs_referral_level_3 *) | |
3963 | (8 /* sizeof start of data block */ + | |
3964 | data_offset + | |
3965 | (char *) &pSMBr->hdr.Protocol); | |
3966 | cFYI(1, ("num_referrals: %d dfs flags: 0x%x ... \n" | |
3967 | "for referral one refer size: 0x%x srv " | |
3968 | "type: 0x%x refer flags: 0x%x ttl: 0x%x", | |
3969 | le16_to_cpu(pSMBr->NumberOfReferrals), | |
3970 | le16_to_cpu(pSMBr->DFSFlags), | |
3971 | le16_to_cpu(referrals->ReferralSize), | |
3972 | le16_to_cpu(referrals->ServerType), | |
3973 | le16_to_cpu(referrals->ReferralFlags), | |
3974 | le16_to_cpu(referrals->TimeToLive))); | |
3975 | /* BB This field is actually two bytes in from start of | |
3976 | data block so we could do safety check that DataBlock | |
3977 | begins at address of pSMBr->NumberOfReferrals */ | |
3978 | *number_of_UNC_in_array = | |
3979 | le16_to_cpu(pSMBr->NumberOfReferrals); | |
3980 | ||
3981 | /* BB Fix below so can return more than one referral */ | |
3982 | if (*number_of_UNC_in_array > 1) | |
3983 | *number_of_UNC_in_array = 1; | |
3984 | ||
3985 | /* get the length of the strings describing refs */ | |
3986 | name_len = 0; | |
3987 | for (i = 0; i < *number_of_UNC_in_array; i++) { | |
3988 | /* make sure that DfsPathOffset not past end */ | |
3989 | __u16 offset = | |
3990 | le16_to_cpu(referrals->DfsPathOffset); | |
3991 | if (offset > data_count) { | |
3992 | /* if invalid referral, stop here and do | |
3993 | not try to copy any more */ | |
3994 | *number_of_UNC_in_array = i; | |
3995 | break; | |
3996 | } | |
3997 | temp = ((char *)referrals) + offset; | |
3998 | ||
3999 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) { | |
4000 | name_len += UniStrnlen((wchar_t *)temp, | |
4001 | data_count); | |
4002 | } else { | |
4003 | name_len += strnlen(temp, data_count); | |
4004 | } | |
4005 | referrals++; | |
4006 | /* BB add check that referral pointer does | |
4007 | not fall off end PDU */ | |
4008 | } | |
4009 | /* BB add check for name_len bigger than bcc */ | |
4010 | *targetUNCs = | |
4011 | kmalloc(name_len+1+(*number_of_UNC_in_array), | |
4012 | GFP_KERNEL); | |
4013 | if (*targetUNCs == NULL) { | |
4014 | rc = -ENOMEM; | |
4015 | goto GetDFSRefExit; | |
4016 | } | |
4017 | /* copy the ref strings */ | |
4018 | referrals = (struct dfs_referral_level_3 *) | |
4019 | (8 /* sizeof data hdr */ + data_offset + | |
4020 | (char *) &pSMBr->hdr.Protocol); | |
4021 | ||
4022 | for (i = 0; i < *number_of_UNC_in_array; i++) { | |
4023 | temp = ((char *)referrals) + | |
4024 | le16_to_cpu(referrals->DfsPathOffset); | |
4025 | if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) { | |
4026 | cifs_strfromUCS_le(*targetUNCs, | |
4027 | (__le16 *) temp, | |
4028 | name_len, | |
4029 | nls_codepage); | |
4030 | } else { | |
4031 | strncpy(*targetUNCs, temp, name_len); | |
4032 | } | |
4033 | /* BB update target_uncs pointers */ | |
4034 | referrals++; | |
4035 | } | |
4036 | temp = *targetUNCs; | |
4037 | temp[name_len] = 0; | |
4038 | } | |
4039 | ||
4040 | } | |
4041 | GetDFSRefExit: | |
4042 | if (pSMB) | |
4043 | cifs_buf_release(pSMB); | |
4044 | ||
4045 | if (rc == -EAGAIN) | |
4046 | goto getDFSRetry; | |
4047 | ||
4048 | return rc; | |
4049 | } | |
4050 | ||
4051 | /* Query File System Info such as free space to old servers such as Win 9x */ | |
4052 | int | |
4053 | SMBOldQFSInfo(const int xid, struct cifsTconInfo *tcon, struct kstatfs *FSData) | |
4054 | { | |
4055 | /* level 0x01 SMB_QUERY_FILE_SYSTEM_INFO */ | |
4056 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4057 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4058 | FILE_SYSTEM_ALLOC_INFO *response_data; | |
4059 | int rc = 0; | |
4060 | int bytes_returned = 0; | |
4061 | __u16 params, byte_count; | |
4062 | ||
4063 | cFYI(1, ("OldQFSInfo")); | |
4064 | oldQFSInfoRetry: | |
4065 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4066 | (void **) &pSMBr); | |
4067 | if (rc) | |
4068 | return rc; | |
4069 | ||
4070 | params = 2; /* level */ | |
4071 | pSMB->TotalDataCount = 0; | |
4072 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
4073 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
4074 | pSMB->MaxSetupCount = 0; | |
4075 | pSMB->Reserved = 0; | |
4076 | pSMB->Flags = 0; | |
4077 | pSMB->Timeout = 0; | |
4078 | pSMB->Reserved2 = 0; | |
4079 | byte_count = params + 1 /* pad */ ; | |
4080 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4081 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4082 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
4083 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
4084 | pSMB->DataCount = 0; | |
4085 | pSMB->DataOffset = 0; | |
4086 | pSMB->SetupCount = 1; | |
4087 | pSMB->Reserved3 = 0; | |
4088 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4089 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_ALLOCATION); | |
4090 | pSMB->hdr.smb_buf_length += byte_count; | |
4091 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
4092 | ||
4093 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4094 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4095 | if (rc) { | |
4096 | cFYI(1, ("Send error in QFSInfo = %d", rc)); | |
4097 | } else { /* decode response */ | |
4098 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4099 | ||
4100 | if (rc || (pSMBr->ByteCount < 18)) | |
4101 | rc = -EIO; /* bad smb */ | |
4102 | else { | |
4103 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4104 | cFYI(1, ("qfsinf resp BCC: %d Offset %d", | |
4105 | pSMBr->ByteCount, data_offset)); | |
4106 | ||
4107 | response_data = (FILE_SYSTEM_ALLOC_INFO *) | |
4108 | (((char *) &pSMBr->hdr.Protocol) + data_offset); | |
4109 | FSData->f_bsize = | |
4110 | le16_to_cpu(response_data->BytesPerSector) * | |
4111 | le32_to_cpu(response_data-> | |
4112 | SectorsPerAllocationUnit); | |
4113 | FSData->f_blocks = | |
4114 | le32_to_cpu(response_data->TotalAllocationUnits); | |
4115 | FSData->f_bfree = FSData->f_bavail = | |
4116 | le32_to_cpu(response_data->FreeAllocationUnits); | |
4117 | cFYI(1, | |
4118 | ("Blocks: %lld Free: %lld Block size %ld", | |
4119 | (unsigned long long)FSData->f_blocks, | |
4120 | (unsigned long long)FSData->f_bfree, | |
4121 | FSData->f_bsize)); | |
4122 | } | |
4123 | } | |
4124 | cifs_buf_release(pSMB); | |
4125 | ||
4126 | if (rc == -EAGAIN) | |
4127 | goto oldQFSInfoRetry; | |
4128 | ||
4129 | return rc; | |
4130 | } | |
4131 | ||
4132 | int | |
4133 | CIFSSMBQFSInfo(const int xid, struct cifsTconInfo *tcon, struct kstatfs *FSData) | |
4134 | { | |
4135 | /* level 0x103 SMB_QUERY_FILE_SYSTEM_INFO */ | |
4136 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4137 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4138 | FILE_SYSTEM_INFO *response_data; | |
4139 | int rc = 0; | |
4140 | int bytes_returned = 0; | |
4141 | __u16 params, byte_count; | |
4142 | ||
4143 | cFYI(1, ("In QFSInfo")); | |
4144 | QFSInfoRetry: | |
4145 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4146 | (void **) &pSMBr); | |
4147 | if (rc) | |
4148 | return rc; | |
4149 | ||
4150 | params = 2; /* level */ | |
4151 | pSMB->TotalDataCount = 0; | |
4152 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
4153 | pSMB->MaxDataCount = cpu_to_le16(1000); | |
4154 | pSMB->MaxSetupCount = 0; | |
4155 | pSMB->Reserved = 0; | |
4156 | pSMB->Flags = 0; | |
4157 | pSMB->Timeout = 0; | |
4158 | pSMB->Reserved2 = 0; | |
4159 | byte_count = params + 1 /* pad */ ; | |
4160 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4161 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4162 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
4163 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
4164 | pSMB->DataCount = 0; | |
4165 | pSMB->DataOffset = 0; | |
4166 | pSMB->SetupCount = 1; | |
4167 | pSMB->Reserved3 = 0; | |
4168 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4169 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_SIZE_INFO); | |
4170 | pSMB->hdr.smb_buf_length += byte_count; | |
4171 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
4172 | ||
4173 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4174 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4175 | if (rc) { | |
4176 | cFYI(1, ("Send error in QFSInfo = %d", rc)); | |
4177 | } else { /* decode response */ | |
4178 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4179 | ||
4180 | if (rc || (pSMBr->ByteCount < 24)) | |
4181 | rc = -EIO; /* bad smb */ | |
4182 | else { | |
4183 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4184 | ||
4185 | response_data = | |
4186 | (FILE_SYSTEM_INFO | |
4187 | *) (((char *) &pSMBr->hdr.Protocol) + | |
4188 | data_offset); | |
4189 | FSData->f_bsize = | |
4190 | le32_to_cpu(response_data->BytesPerSector) * | |
4191 | le32_to_cpu(response_data-> | |
4192 | SectorsPerAllocationUnit); | |
4193 | FSData->f_blocks = | |
4194 | le64_to_cpu(response_data->TotalAllocationUnits); | |
4195 | FSData->f_bfree = FSData->f_bavail = | |
4196 | le64_to_cpu(response_data->FreeAllocationUnits); | |
4197 | cFYI(1, | |
4198 | ("Blocks: %lld Free: %lld Block size %ld", | |
4199 | (unsigned long long)FSData->f_blocks, | |
4200 | (unsigned long long)FSData->f_bfree, | |
4201 | FSData->f_bsize)); | |
4202 | } | |
4203 | } | |
4204 | cifs_buf_release(pSMB); | |
4205 | ||
4206 | if (rc == -EAGAIN) | |
4207 | goto QFSInfoRetry; | |
4208 | ||
4209 | return rc; | |
4210 | } | |
4211 | ||
4212 | int | |
4213 | CIFSSMBQFSAttributeInfo(const int xid, struct cifsTconInfo *tcon) | |
4214 | { | |
4215 | /* level 0x105 SMB_QUERY_FILE_SYSTEM_INFO */ | |
4216 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4217 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4218 | FILE_SYSTEM_ATTRIBUTE_INFO *response_data; | |
4219 | int rc = 0; | |
4220 | int bytes_returned = 0; | |
4221 | __u16 params, byte_count; | |
4222 | ||
4223 | cFYI(1, ("In QFSAttributeInfo")); | |
4224 | QFSAttributeRetry: | |
4225 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4226 | (void **) &pSMBr); | |
4227 | if (rc) | |
4228 | return rc; | |
4229 | ||
4230 | params = 2; /* level */ | |
4231 | pSMB->TotalDataCount = 0; | |
4232 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
4233 | pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find exact max SMB PDU from sess structure BB */ | |
4234 | pSMB->MaxSetupCount = 0; | |
4235 | pSMB->Reserved = 0; | |
4236 | pSMB->Flags = 0; | |
4237 | pSMB->Timeout = 0; | |
4238 | pSMB->Reserved2 = 0; | |
4239 | byte_count = params + 1 /* pad */ ; | |
4240 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4241 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4242 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
4243 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
4244 | pSMB->DataCount = 0; | |
4245 | pSMB->DataOffset = 0; | |
4246 | pSMB->SetupCount = 1; | |
4247 | pSMB->Reserved3 = 0; | |
4248 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4249 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_ATTRIBUTE_INFO); | |
4250 | pSMB->hdr.smb_buf_length += byte_count; | |
4251 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
4252 | ||
4253 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4254 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4255 | if (rc) { | |
4256 | cERROR(1, ("Send error in QFSAttributeInfo = %d", rc)); | |
4257 | } else { /* decode response */ | |
4258 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4259 | ||
4260 | if (rc || (pSMBr->ByteCount < 13)) { | |
4261 | /* BB also check if enough bytes returned */ | |
4262 | rc = -EIO; /* bad smb */ | |
4263 | } else { | |
4264 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4265 | response_data = | |
4266 | (FILE_SYSTEM_ATTRIBUTE_INFO | |
4267 | *) (((char *) &pSMBr->hdr.Protocol) + | |
4268 | data_offset); | |
4269 | memcpy(&tcon->fsAttrInfo, response_data, | |
4270 | sizeof(FILE_SYSTEM_ATTRIBUTE_INFO)); | |
4271 | } | |
4272 | } | |
4273 | cifs_buf_release(pSMB); | |
4274 | ||
4275 | if (rc == -EAGAIN) | |
4276 | goto QFSAttributeRetry; | |
4277 | ||
4278 | return rc; | |
4279 | } | |
4280 | ||
4281 | int | |
4282 | CIFSSMBQFSDeviceInfo(const int xid, struct cifsTconInfo *tcon) | |
4283 | { | |
4284 | /* level 0x104 SMB_QUERY_FILE_SYSTEM_INFO */ | |
4285 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4286 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4287 | FILE_SYSTEM_DEVICE_INFO *response_data; | |
4288 | int rc = 0; | |
4289 | int bytes_returned = 0; | |
4290 | __u16 params, byte_count; | |
4291 | ||
4292 | cFYI(1, ("In QFSDeviceInfo")); | |
4293 | QFSDeviceRetry: | |
4294 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4295 | (void **) &pSMBr); | |
4296 | if (rc) | |
4297 | return rc; | |
4298 | ||
4299 | params = 2; /* level */ | |
4300 | pSMB->TotalDataCount = 0; | |
4301 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
4302 | pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find exact max SMB PDU from sess structure BB */ | |
4303 | pSMB->MaxSetupCount = 0; | |
4304 | pSMB->Reserved = 0; | |
4305 | pSMB->Flags = 0; | |
4306 | pSMB->Timeout = 0; | |
4307 | pSMB->Reserved2 = 0; | |
4308 | byte_count = params + 1 /* pad */ ; | |
4309 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
4310 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
4311 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
4312 | struct smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
4313 | ||
4314 | pSMB->DataCount = 0; | |
4315 | pSMB->DataOffset = 0; | |
4316 | pSMB->SetupCount = 1; | |
4317 | pSMB->Reserved3 = 0; | |
4318 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4319 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_DEVICE_INFO); | |
4320 | pSMB->hdr.smb_buf_length += byte_count; | |
4321 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
4322 | ||
4323 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4324 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4325 | if (rc) { | |
4326 | cFYI(1, ("Send error in QFSDeviceInfo = %d", rc)); | |
4327 | } else { /* decode response */ | |
4328 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4329 | ||
4330 | if (rc || (pSMBr->ByteCount < sizeof(FILE_SYSTEM_DEVICE_INFO))) | |
4331 | rc = -EIO; /* bad smb */ | |
4332 | else { | |
4333 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4334 | response_data = | |
4335 | (FILE_SYSTEM_DEVICE_INFO *) | |
4336 | (((char *) &pSMBr->hdr.Protocol) + | |
4337 | data_offset); | |
4338 | memcpy(&tcon->fsDevInfo, response_data, | |
4339 | sizeof(FILE_SYSTEM_DEVICE_INFO)); | |
4340 | } | |
4341 | } | |
4342 | cifs_buf_release(pSMB); | |
4343 | ||
4344 | if (rc == -EAGAIN) | |
4345 | goto QFSDeviceRetry; | |
4346 | ||
4347 | return rc; | |
4348 | } | |
4349 | ||
4350 | int | |
4351 | CIFSSMBQFSUnixInfo(const int xid, struct cifsTconInfo *tcon) | |
4352 | { | |
4353 | /* level 0x200 SMB_QUERY_CIFS_UNIX_INFO */ | |
4354 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4355 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4356 | FILE_SYSTEM_UNIX_INFO *response_data; | |
4357 | int rc = 0; | |
4358 | int bytes_returned = 0; | |
4359 | __u16 params, byte_count; | |
4360 | ||
4361 | cFYI(1, ("In QFSUnixInfo")); | |
4362 | QFSUnixRetry: | |
4363 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4364 | (void **) &pSMBr); | |
4365 | if (rc) | |
4366 | return rc; | |
4367 | ||
4368 | params = 2; /* level */ | |
4369 | pSMB->TotalDataCount = 0; | |
4370 | pSMB->DataCount = 0; | |
4371 | pSMB->DataOffset = 0; | |
4372 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
4373 | pSMB->MaxDataCount = cpu_to_le16(100); /* BB find exact max SMB PDU from sess structure BB */ | |
4374 | pSMB->MaxSetupCount = 0; | |
4375 | pSMB->Reserved = 0; | |
4376 | pSMB->Flags = 0; | |
4377 | pSMB->Timeout = 0; | |
4378 | pSMB->Reserved2 = 0; | |
4379 | byte_count = params + 1 /* pad */ ; | |
4380 | pSMB->ParameterCount = cpu_to_le16(params); | |
4381 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
4382 | pSMB->ParameterOffset = cpu_to_le16(offsetof(struct | |
4383 | smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
4384 | pSMB->SetupCount = 1; | |
4385 | pSMB->Reserved3 = 0; | |
4386 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4387 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_CIFS_UNIX_INFO); | |
4388 | pSMB->hdr.smb_buf_length += byte_count; | |
4389 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
4390 | ||
4391 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4392 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4393 | if (rc) { | |
4394 | cERROR(1, ("Send error in QFSUnixInfo = %d", rc)); | |
4395 | } else { /* decode response */ | |
4396 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4397 | ||
4398 | if (rc || (pSMBr->ByteCount < 13)) { | |
4399 | rc = -EIO; /* bad smb */ | |
4400 | } else { | |
4401 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4402 | response_data = | |
4403 | (FILE_SYSTEM_UNIX_INFO | |
4404 | *) (((char *) &pSMBr->hdr.Protocol) + | |
4405 | data_offset); | |
4406 | memcpy(&tcon->fsUnixInfo, response_data, | |
4407 | sizeof(FILE_SYSTEM_UNIX_INFO)); | |
4408 | } | |
4409 | } | |
4410 | cifs_buf_release(pSMB); | |
4411 | ||
4412 | if (rc == -EAGAIN) | |
4413 | goto QFSUnixRetry; | |
4414 | ||
4415 | ||
4416 | return rc; | |
4417 | } | |
4418 | ||
4419 | int | |
4420 | CIFSSMBSetFSUnixInfo(const int xid, struct cifsTconInfo *tcon, __u64 cap) | |
4421 | { | |
4422 | /* level 0x200 SMB_SET_CIFS_UNIX_INFO */ | |
4423 | TRANSACTION2_SETFSI_REQ *pSMB = NULL; | |
4424 | TRANSACTION2_SETFSI_RSP *pSMBr = NULL; | |
4425 | int rc = 0; | |
4426 | int bytes_returned = 0; | |
4427 | __u16 params, param_offset, offset, byte_count; | |
4428 | ||
4429 | cFYI(1, ("In SETFSUnixInfo")); | |
4430 | SETFSUnixRetry: | |
4431 | /* BB switch to small buf init to save memory */ | |
4432 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4433 | (void **) &pSMBr); | |
4434 | if (rc) | |
4435 | return rc; | |
4436 | ||
4437 | params = 4; /* 2 bytes zero followed by info level. */ | |
4438 | pSMB->MaxSetupCount = 0; | |
4439 | pSMB->Reserved = 0; | |
4440 | pSMB->Flags = 0; | |
4441 | pSMB->Timeout = 0; | |
4442 | pSMB->Reserved2 = 0; | |
4443 | param_offset = offsetof(struct smb_com_transaction2_setfsi_req, FileNum) | |
4444 | - 4; | |
4445 | offset = param_offset + params; | |
4446 | ||
4447 | pSMB->MaxParameterCount = cpu_to_le16(4); | |
4448 | pSMB->MaxDataCount = cpu_to_le16(100); /* BB find exact max SMB PDU from sess structure BB */ | |
4449 | pSMB->SetupCount = 1; | |
4450 | pSMB->Reserved3 = 0; | |
4451 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FS_INFORMATION); | |
4452 | byte_count = 1 /* pad */ + params + 12; | |
4453 | ||
4454 | pSMB->DataCount = cpu_to_le16(12); | |
4455 | pSMB->ParameterCount = cpu_to_le16(params); | |
4456 | pSMB->TotalDataCount = pSMB->DataCount; | |
4457 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
4458 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
4459 | pSMB->DataOffset = cpu_to_le16(offset); | |
4460 | ||
4461 | /* Params. */ | |
4462 | pSMB->FileNum = 0; | |
4463 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_CIFS_UNIX_INFO); | |
4464 | ||
4465 | /* Data. */ | |
4466 | pSMB->ClientUnixMajor = cpu_to_le16(CIFS_UNIX_MAJOR_VERSION); | |
4467 | pSMB->ClientUnixMinor = cpu_to_le16(CIFS_UNIX_MINOR_VERSION); | |
4468 | pSMB->ClientUnixCap = cpu_to_le64(cap); | |
4469 | ||
4470 | pSMB->hdr.smb_buf_length += byte_count; | |
4471 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
4472 | ||
4473 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4474 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4475 | if (rc) { | |
4476 | cERROR(1, ("Send error in SETFSUnixInfo = %d", rc)); | |
4477 | } else { /* decode response */ | |
4478 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4479 | if (rc) | |
4480 | rc = -EIO; /* bad smb */ | |
4481 | } | |
4482 | cifs_buf_release(pSMB); | |
4483 | ||
4484 | if (rc == -EAGAIN) | |
4485 | goto SETFSUnixRetry; | |
4486 | ||
4487 | return rc; | |
4488 | } | |
4489 | ||
4490 | ||
4491 | ||
4492 | int | |
4493 | CIFSSMBQFSPosixInfo(const int xid, struct cifsTconInfo *tcon, | |
4494 | struct kstatfs *FSData) | |
4495 | { | |
4496 | /* level 0x201 SMB_QUERY_CIFS_POSIX_INFO */ | |
4497 | TRANSACTION2_QFSI_REQ *pSMB = NULL; | |
4498 | TRANSACTION2_QFSI_RSP *pSMBr = NULL; | |
4499 | FILE_SYSTEM_POSIX_INFO *response_data; | |
4500 | int rc = 0; | |
4501 | int bytes_returned = 0; | |
4502 | __u16 params, byte_count; | |
4503 | ||
4504 | cFYI(1, ("In QFSPosixInfo")); | |
4505 | QFSPosixRetry: | |
4506 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4507 | (void **) &pSMBr); | |
4508 | if (rc) | |
4509 | return rc; | |
4510 | ||
4511 | params = 2; /* level */ | |
4512 | pSMB->TotalDataCount = 0; | |
4513 | pSMB->DataCount = 0; | |
4514 | pSMB->DataOffset = 0; | |
4515 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
4516 | pSMB->MaxDataCount = cpu_to_le16(100); /* BB find exact max SMB PDU from sess structure BB */ | |
4517 | pSMB->MaxSetupCount = 0; | |
4518 | pSMB->Reserved = 0; | |
4519 | pSMB->Flags = 0; | |
4520 | pSMB->Timeout = 0; | |
4521 | pSMB->Reserved2 = 0; | |
4522 | byte_count = params + 1 /* pad */ ; | |
4523 | pSMB->ParameterCount = cpu_to_le16(params); | |
4524 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
4525 | pSMB->ParameterOffset = cpu_to_le16(offsetof(struct | |
4526 | smb_com_transaction2_qfsi_req, InformationLevel) - 4); | |
4527 | pSMB->SetupCount = 1; | |
4528 | pSMB->Reserved3 = 0; | |
4529 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION); | |
4530 | pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_POSIX_FS_INFO); | |
4531 | pSMB->hdr.smb_buf_length += byte_count; | |
4532 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
4533 | ||
4534 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4535 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4536 | if (rc) { | |
4537 | cFYI(1, ("Send error in QFSUnixInfo = %d", rc)); | |
4538 | } else { /* decode response */ | |
4539 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
4540 | ||
4541 | if (rc || (pSMBr->ByteCount < 13)) { | |
4542 | rc = -EIO; /* bad smb */ | |
4543 | } else { | |
4544 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
4545 | response_data = | |
4546 | (FILE_SYSTEM_POSIX_INFO | |
4547 | *) (((char *) &pSMBr->hdr.Protocol) + | |
4548 | data_offset); | |
4549 | FSData->f_bsize = | |
4550 | le32_to_cpu(response_data->BlockSize); | |
4551 | FSData->f_blocks = | |
4552 | le64_to_cpu(response_data->TotalBlocks); | |
4553 | FSData->f_bfree = | |
4554 | le64_to_cpu(response_data->BlocksAvail); | |
4555 | if (response_data->UserBlocksAvail == cpu_to_le64(-1)) { | |
4556 | FSData->f_bavail = FSData->f_bfree; | |
4557 | } else { | |
4558 | FSData->f_bavail = | |
4559 | le64_to_cpu(response_data->UserBlocksAvail); | |
4560 | } | |
4561 | if (response_data->TotalFileNodes != cpu_to_le64(-1)) | |
4562 | FSData->f_files = | |
4563 | le64_to_cpu(response_data->TotalFileNodes); | |
4564 | if (response_data->FreeFileNodes != cpu_to_le64(-1)) | |
4565 | FSData->f_ffree = | |
4566 | le64_to_cpu(response_data->FreeFileNodes); | |
4567 | } | |
4568 | } | |
4569 | cifs_buf_release(pSMB); | |
4570 | ||
4571 | if (rc == -EAGAIN) | |
4572 | goto QFSPosixRetry; | |
4573 | ||
4574 | return rc; | |
4575 | } | |
4576 | ||
4577 | ||
4578 | /* We can not use write of zero bytes trick to | |
4579 | set file size due to need for large file support. Also note that | |
4580 | this SetPathInfo is preferred to SetFileInfo based method in next | |
4581 | routine which is only needed to work around a sharing violation bug | |
4582 | in Samba which this routine can run into */ | |
4583 | ||
4584 | int | |
4585 | CIFSSMBSetEOF(const int xid, struct cifsTconInfo *tcon, const char *fileName, | |
4586 | __u64 size, bool SetAllocation, | |
4587 | const struct nls_table *nls_codepage, int remap) | |
4588 | { | |
4589 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
4590 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
4591 | struct file_end_of_file_info *parm_data; | |
4592 | int name_len; | |
4593 | int rc = 0; | |
4594 | int bytes_returned = 0; | |
4595 | __u16 params, byte_count, data_count, param_offset, offset; | |
4596 | ||
4597 | cFYI(1, ("In SetEOF")); | |
4598 | SetEOFRetry: | |
4599 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4600 | (void **) &pSMBr); | |
4601 | if (rc) | |
4602 | return rc; | |
4603 | ||
4604 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
4605 | name_len = | |
4606 | cifsConvertToUCS((__le16 *) pSMB->FileName, fileName, | |
4607 | PATH_MAX, nls_codepage, remap); | |
4608 | name_len++; /* trailing null */ | |
4609 | name_len *= 2; | |
4610 | } else { /* BB improve the check for buffer overruns BB */ | |
4611 | name_len = strnlen(fileName, PATH_MAX); | |
4612 | name_len++; /* trailing null */ | |
4613 | strncpy(pSMB->FileName, fileName, name_len); | |
4614 | } | |
4615 | params = 6 + name_len; | |
4616 | data_count = sizeof(struct file_end_of_file_info); | |
4617 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
4618 | pSMB->MaxDataCount = cpu_to_le16(4100); | |
4619 | pSMB->MaxSetupCount = 0; | |
4620 | pSMB->Reserved = 0; | |
4621 | pSMB->Flags = 0; | |
4622 | pSMB->Timeout = 0; | |
4623 | pSMB->Reserved2 = 0; | |
4624 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
4625 | InformationLevel) - 4; | |
4626 | offset = param_offset + params; | |
4627 | if (SetAllocation) { | |
4628 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) | |
4629 | pSMB->InformationLevel = | |
4630 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO2); | |
4631 | else | |
4632 | pSMB->InformationLevel = | |
4633 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO); | |
4634 | } else /* Set File Size */ { | |
4635 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) | |
4636 | pSMB->InformationLevel = | |
4637 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO2); | |
4638 | else | |
4639 | pSMB->InformationLevel = | |
4640 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO); | |
4641 | } | |
4642 | ||
4643 | parm_data = | |
4644 | (struct file_end_of_file_info *) (((char *) &pSMB->hdr.Protocol) + | |
4645 | offset); | |
4646 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
4647 | pSMB->DataOffset = cpu_to_le16(offset); | |
4648 | pSMB->SetupCount = 1; | |
4649 | pSMB->Reserved3 = 0; | |
4650 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
4651 | byte_count = 3 /* pad */ + params + data_count; | |
4652 | pSMB->DataCount = cpu_to_le16(data_count); | |
4653 | pSMB->TotalDataCount = pSMB->DataCount; | |
4654 | pSMB->ParameterCount = cpu_to_le16(params); | |
4655 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
4656 | pSMB->Reserved4 = 0; | |
4657 | pSMB->hdr.smb_buf_length += byte_count; | |
4658 | parm_data->FileSize = cpu_to_le64(size); | |
4659 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
4660 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4661 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4662 | if (rc) | |
4663 | cFYI(1, ("SetPathInfo (file size) returned %d", rc)); | |
4664 | ||
4665 | cifs_buf_release(pSMB); | |
4666 | ||
4667 | if (rc == -EAGAIN) | |
4668 | goto SetEOFRetry; | |
4669 | ||
4670 | return rc; | |
4671 | } | |
4672 | ||
4673 | int | |
4674 | CIFSSMBSetFileSize(const int xid, struct cifsTconInfo *tcon, __u64 size, | |
4675 | __u16 fid, __u32 pid_of_opener, bool SetAllocation) | |
4676 | { | |
4677 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
4678 | char *data_offset; | |
4679 | struct file_end_of_file_info *parm_data; | |
4680 | int rc = 0; | |
4681 | __u16 params, param_offset, offset, byte_count, count; | |
4682 | ||
4683 | cFYI(1, ("SetFileSize (via SetFileInfo) %lld", | |
4684 | (long long)size)); | |
4685 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); | |
4686 | ||
4687 | if (rc) | |
4688 | return rc; | |
4689 | ||
4690 | pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); | |
4691 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16)); | |
4692 | ||
4693 | params = 6; | |
4694 | pSMB->MaxSetupCount = 0; | |
4695 | pSMB->Reserved = 0; | |
4696 | pSMB->Flags = 0; | |
4697 | pSMB->Timeout = 0; | |
4698 | pSMB->Reserved2 = 0; | |
4699 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
4700 | offset = param_offset + params; | |
4701 | ||
4702 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
4703 | ||
4704 | count = sizeof(struct file_end_of_file_info); | |
4705 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
4706 | pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB PDU from sess */ | |
4707 | pSMB->SetupCount = 1; | |
4708 | pSMB->Reserved3 = 0; | |
4709 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
4710 | byte_count = 3 /* pad */ + params + count; | |
4711 | pSMB->DataCount = cpu_to_le16(count); | |
4712 | pSMB->ParameterCount = cpu_to_le16(params); | |
4713 | pSMB->TotalDataCount = pSMB->DataCount; | |
4714 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
4715 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
4716 | parm_data = | |
4717 | (struct file_end_of_file_info *) (((char *) &pSMB->hdr.Protocol) | |
4718 | + offset); | |
4719 | pSMB->DataOffset = cpu_to_le16(offset); | |
4720 | parm_data->FileSize = cpu_to_le64(size); | |
4721 | pSMB->Fid = fid; | |
4722 | if (SetAllocation) { | |
4723 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) | |
4724 | pSMB->InformationLevel = | |
4725 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO2); | |
4726 | else | |
4727 | pSMB->InformationLevel = | |
4728 | cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO); | |
4729 | } else /* Set File Size */ { | |
4730 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) | |
4731 | pSMB->InformationLevel = | |
4732 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO2); | |
4733 | else | |
4734 | pSMB->InformationLevel = | |
4735 | cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO); | |
4736 | } | |
4737 | pSMB->Reserved4 = 0; | |
4738 | pSMB->hdr.smb_buf_length += byte_count; | |
4739 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
4740 | rc = SendReceiveNoRsp(xid, tcon->ses, (struct smb_hdr *) pSMB, 0); | |
4741 | if (rc) { | |
4742 | cFYI(1, | |
4743 | ("Send error in SetFileInfo (SetFileSize) = %d", | |
4744 | rc)); | |
4745 | } | |
4746 | ||
4747 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
4748 | since file handle passed in no longer valid */ | |
4749 | ||
4750 | return rc; | |
4751 | } | |
4752 | ||
4753 | /* Some legacy servers such as NT4 require that the file times be set on | |
4754 | an open handle, rather than by pathname - this is awkward due to | |
4755 | potential access conflicts on the open, but it is unavoidable for these | |
4756 | old servers since the only other choice is to go from 100 nanosecond DCE | |
4757 | time and resort to the original setpathinfo level which takes the ancient | |
4758 | DOS time format with 2 second granularity */ | |
4759 | int | |
4760 | CIFSSMBSetFileTimes(const int xid, struct cifsTconInfo *tcon, | |
4761 | const FILE_BASIC_INFO *data, __u16 fid) | |
4762 | { | |
4763 | struct smb_com_transaction2_sfi_req *pSMB = NULL; | |
4764 | char *data_offset; | |
4765 | int rc = 0; | |
4766 | __u16 params, param_offset, offset, byte_count, count; | |
4767 | ||
4768 | cFYI(1, ("Set Times (via SetFileInfo)")); | |
4769 | rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB); | |
4770 | ||
4771 | if (rc) | |
4772 | return rc; | |
4773 | ||
4774 | /* At this point there is no need to override the current pid | |
4775 | with the pid of the opener, but that could change if we someday | |
4776 | use an existing handle (rather than opening one on the fly) */ | |
4777 | /* pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener); | |
4778 | pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16));*/ | |
4779 | ||
4780 | params = 6; | |
4781 | pSMB->MaxSetupCount = 0; | |
4782 | pSMB->Reserved = 0; | |
4783 | pSMB->Flags = 0; | |
4784 | pSMB->Timeout = 0; | |
4785 | pSMB->Reserved2 = 0; | |
4786 | param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4; | |
4787 | offset = param_offset + params; | |
4788 | ||
4789 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
4790 | ||
4791 | count = sizeof(FILE_BASIC_INFO); | |
4792 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
4793 | pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB PDU from sess */ | |
4794 | pSMB->SetupCount = 1; | |
4795 | pSMB->Reserved3 = 0; | |
4796 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION); | |
4797 | byte_count = 3 /* pad */ + params + count; | |
4798 | pSMB->DataCount = cpu_to_le16(count); | |
4799 | pSMB->ParameterCount = cpu_to_le16(params); | |
4800 | pSMB->TotalDataCount = pSMB->DataCount; | |
4801 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
4802 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
4803 | pSMB->DataOffset = cpu_to_le16(offset); | |
4804 | pSMB->Fid = fid; | |
4805 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) | |
4806 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO2); | |
4807 | else | |
4808 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO); | |
4809 | pSMB->Reserved4 = 0; | |
4810 | pSMB->hdr.smb_buf_length += byte_count; | |
4811 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
4812 | memcpy(data_offset, data, sizeof(FILE_BASIC_INFO)); | |
4813 | rc = SendReceiveNoRsp(xid, tcon->ses, (struct smb_hdr *) pSMB, 0); | |
4814 | if (rc) | |
4815 | cFYI(1, ("Send error in Set Time (SetFileInfo) = %d", rc)); | |
4816 | ||
4817 | /* Note: On -EAGAIN error only caller can retry on handle based calls | |
4818 | since file handle passed in no longer valid */ | |
4819 | ||
4820 | return rc; | |
4821 | } | |
4822 | ||
4823 | ||
4824 | int | |
4825 | CIFSSMBSetTimes(const int xid, struct cifsTconInfo *tcon, const char *fileName, | |
4826 | const FILE_BASIC_INFO *data, | |
4827 | const struct nls_table *nls_codepage, int remap) | |
4828 | { | |
4829 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
4830 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
4831 | int name_len; | |
4832 | int rc = 0; | |
4833 | int bytes_returned = 0; | |
4834 | char *data_offset; | |
4835 | __u16 params, param_offset, offset, byte_count, count; | |
4836 | ||
4837 | cFYI(1, ("In SetTimes")); | |
4838 | ||
4839 | SetTimesRetry: | |
4840 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4841 | (void **) &pSMBr); | |
4842 | if (rc) | |
4843 | return rc; | |
4844 | ||
4845 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
4846 | name_len = | |
4847 | cifsConvertToUCS((__le16 *) pSMB->FileName, fileName, | |
4848 | PATH_MAX, nls_codepage, remap); | |
4849 | name_len++; /* trailing null */ | |
4850 | name_len *= 2; | |
4851 | } else { /* BB improve the check for buffer overruns BB */ | |
4852 | name_len = strnlen(fileName, PATH_MAX); | |
4853 | name_len++; /* trailing null */ | |
4854 | strncpy(pSMB->FileName, fileName, name_len); | |
4855 | } | |
4856 | ||
4857 | params = 6 + name_len; | |
4858 | count = sizeof(FILE_BASIC_INFO); | |
4859 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
4860 | pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find exact max SMB PDU from sess structure BB */ | |
4861 | pSMB->MaxSetupCount = 0; | |
4862 | pSMB->Reserved = 0; | |
4863 | pSMB->Flags = 0; | |
4864 | pSMB->Timeout = 0; | |
4865 | pSMB->Reserved2 = 0; | |
4866 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
4867 | InformationLevel) - 4; | |
4868 | offset = param_offset + params; | |
4869 | data_offset = (char *) (&pSMB->hdr.Protocol) + offset; | |
4870 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
4871 | pSMB->DataOffset = cpu_to_le16(offset); | |
4872 | pSMB->SetupCount = 1; | |
4873 | pSMB->Reserved3 = 0; | |
4874 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
4875 | byte_count = 3 /* pad */ + params + count; | |
4876 | ||
4877 | pSMB->DataCount = cpu_to_le16(count); | |
4878 | pSMB->ParameterCount = cpu_to_le16(params); | |
4879 | pSMB->TotalDataCount = pSMB->DataCount; | |
4880 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
4881 | if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU) | |
4882 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO2); | |
4883 | else | |
4884 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO); | |
4885 | pSMB->Reserved4 = 0; | |
4886 | pSMB->hdr.smb_buf_length += byte_count; | |
4887 | memcpy(data_offset, data, sizeof(FILE_BASIC_INFO)); | |
4888 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
4889 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4890 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4891 | if (rc) | |
4892 | cFYI(1, ("SetPathInfo (times) returned %d", rc)); | |
4893 | ||
4894 | cifs_buf_release(pSMB); | |
4895 | ||
4896 | if (rc == -EAGAIN) | |
4897 | goto SetTimesRetry; | |
4898 | ||
4899 | return rc; | |
4900 | } | |
4901 | ||
4902 | /* Can not be used to set time stamps yet (due to old DOS time format) */ | |
4903 | /* Can be used to set attributes */ | |
4904 | #if 0 /* Possibly not needed - since it turns out that strangely NT4 has a bug | |
4905 | handling it anyway and NT4 was what we thought it would be needed for | |
4906 | Do not delete it until we prove whether needed for Win9x though */ | |
4907 | int | |
4908 | CIFSSMBSetAttrLegacy(int xid, struct cifsTconInfo *tcon, char *fileName, | |
4909 | __u16 dos_attrs, const struct nls_table *nls_codepage) | |
4910 | { | |
4911 | SETATTR_REQ *pSMB = NULL; | |
4912 | SETATTR_RSP *pSMBr = NULL; | |
4913 | int rc = 0; | |
4914 | int bytes_returned; | |
4915 | int name_len; | |
4916 | ||
4917 | cFYI(1, ("In SetAttrLegacy")); | |
4918 | ||
4919 | SetAttrLgcyRetry: | |
4920 | rc = smb_init(SMB_COM_SETATTR, 8, tcon, (void **) &pSMB, | |
4921 | (void **) &pSMBr); | |
4922 | if (rc) | |
4923 | return rc; | |
4924 | ||
4925 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
4926 | name_len = | |
4927 | ConvertToUCS((__le16 *) pSMB->fileName, fileName, | |
4928 | PATH_MAX, nls_codepage); | |
4929 | name_len++; /* trailing null */ | |
4930 | name_len *= 2; | |
4931 | } else { /* BB improve the check for buffer overruns BB */ | |
4932 | name_len = strnlen(fileName, PATH_MAX); | |
4933 | name_len++; /* trailing null */ | |
4934 | strncpy(pSMB->fileName, fileName, name_len); | |
4935 | } | |
4936 | pSMB->attr = cpu_to_le16(dos_attrs); | |
4937 | pSMB->BufferFormat = 0x04; | |
4938 | pSMB->hdr.smb_buf_length += name_len + 1; | |
4939 | pSMB->ByteCount = cpu_to_le16(name_len + 1); | |
4940 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
4941 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
4942 | if (rc) | |
4943 | cFYI(1, ("Error in LegacySetAttr = %d", rc)); | |
4944 | ||
4945 | cifs_buf_release(pSMB); | |
4946 | ||
4947 | if (rc == -EAGAIN) | |
4948 | goto SetAttrLgcyRetry; | |
4949 | ||
4950 | return rc; | |
4951 | } | |
4952 | #endif /* temporarily unneeded SetAttr legacy function */ | |
4953 | ||
4954 | int | |
4955 | CIFSSMBUnixSetPerms(const int xid, struct cifsTconInfo *tcon, | |
4956 | char *fileName, __u64 mode, __u64 uid, __u64 gid, | |
4957 | dev_t device, const struct nls_table *nls_codepage, | |
4958 | int remap) | |
4959 | { | |
4960 | TRANSACTION2_SPI_REQ *pSMB = NULL; | |
4961 | TRANSACTION2_SPI_RSP *pSMBr = NULL; | |
4962 | int name_len; | |
4963 | int rc = 0; | |
4964 | int bytes_returned = 0; | |
4965 | FILE_UNIX_BASIC_INFO *data_offset; | |
4966 | __u16 params, param_offset, offset, count, byte_count; | |
4967 | ||
4968 | cFYI(1, ("In SetUID/GID/Mode")); | |
4969 | setPermsRetry: | |
4970 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
4971 | (void **) &pSMBr); | |
4972 | if (rc) | |
4973 | return rc; | |
4974 | ||
4975 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
4976 | name_len = | |
4977 | cifsConvertToUCS((__le16 *) pSMB->FileName, fileName, | |
4978 | PATH_MAX, nls_codepage, remap); | |
4979 | name_len++; /* trailing null */ | |
4980 | name_len *= 2; | |
4981 | } else { /* BB improve the check for buffer overruns BB */ | |
4982 | name_len = strnlen(fileName, PATH_MAX); | |
4983 | name_len++; /* trailing null */ | |
4984 | strncpy(pSMB->FileName, fileName, name_len); | |
4985 | } | |
4986 | ||
4987 | params = 6 + name_len; | |
4988 | count = sizeof(FILE_UNIX_BASIC_INFO); | |
4989 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
4990 | pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find exact max SMB PDU from sess structure BB */ | |
4991 | pSMB->MaxSetupCount = 0; | |
4992 | pSMB->Reserved = 0; | |
4993 | pSMB->Flags = 0; | |
4994 | pSMB->Timeout = 0; | |
4995 | pSMB->Reserved2 = 0; | |
4996 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
4997 | InformationLevel) - 4; | |
4998 | offset = param_offset + params; | |
4999 | data_offset = | |
5000 | (FILE_UNIX_BASIC_INFO *) ((char *) &pSMB->hdr.Protocol + | |
5001 | offset); | |
5002 | memset(data_offset, 0, count); | |
5003 | pSMB->DataOffset = cpu_to_le16(offset); | |
5004 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5005 | pSMB->SetupCount = 1; | |
5006 | pSMB->Reserved3 = 0; | |
5007 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
5008 | byte_count = 3 /* pad */ + params + count; | |
5009 | pSMB->ParameterCount = cpu_to_le16(params); | |
5010 | pSMB->DataCount = cpu_to_le16(count); | |
5011 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5012 | pSMB->TotalDataCount = pSMB->DataCount; | |
5013 | pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_BASIC); | |
5014 | pSMB->Reserved4 = 0; | |
5015 | pSMB->hdr.smb_buf_length += byte_count; | |
5016 | /* Samba server ignores set of file size to zero due to bugs in some | |
5017 | older clients, but we should be precise - we use SetFileSize to | |
5018 | set file size and do not want to truncate file size to zero | |
5019 | accidently as happened on one Samba server beta by putting | |
5020 | zero instead of -1 here */ | |
5021 | data_offset->EndOfFile = NO_CHANGE_64; | |
5022 | data_offset->NumOfBytes = NO_CHANGE_64; | |
5023 | data_offset->LastStatusChange = NO_CHANGE_64; | |
5024 | data_offset->LastAccessTime = NO_CHANGE_64; | |
5025 | data_offset->LastModificationTime = NO_CHANGE_64; | |
5026 | data_offset->Uid = cpu_to_le64(uid); | |
5027 | data_offset->Gid = cpu_to_le64(gid); | |
5028 | /* better to leave device as zero when it is */ | |
5029 | data_offset->DevMajor = cpu_to_le64(MAJOR(device)); | |
5030 | data_offset->DevMinor = cpu_to_le64(MINOR(device)); | |
5031 | data_offset->Permissions = cpu_to_le64(mode); | |
5032 | ||
5033 | if (S_ISREG(mode)) | |
5034 | data_offset->Type = cpu_to_le32(UNIX_FILE); | |
5035 | else if (S_ISDIR(mode)) | |
5036 | data_offset->Type = cpu_to_le32(UNIX_DIR); | |
5037 | else if (S_ISLNK(mode)) | |
5038 | data_offset->Type = cpu_to_le32(UNIX_SYMLINK); | |
5039 | else if (S_ISCHR(mode)) | |
5040 | data_offset->Type = cpu_to_le32(UNIX_CHARDEV); | |
5041 | else if (S_ISBLK(mode)) | |
5042 | data_offset->Type = cpu_to_le32(UNIX_BLOCKDEV); | |
5043 | else if (S_ISFIFO(mode)) | |
5044 | data_offset->Type = cpu_to_le32(UNIX_FIFO); | |
5045 | else if (S_ISSOCK(mode)) | |
5046 | data_offset->Type = cpu_to_le32(UNIX_SOCKET); | |
5047 | ||
5048 | ||
5049 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
5050 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5051 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5052 | if (rc) | |
5053 | cFYI(1, ("SetPathInfo (perms) returned %d", rc)); | |
5054 | ||
5055 | if (pSMB) | |
5056 | cifs_buf_release(pSMB); | |
5057 | if (rc == -EAGAIN) | |
5058 | goto setPermsRetry; | |
5059 | return rc; | |
5060 | } | |
5061 | ||
5062 | int CIFSSMBNotify(const int xid, struct cifsTconInfo *tcon, | |
5063 | const int notify_subdirs, const __u16 netfid, | |
5064 | __u32 filter, struct file *pfile, int multishot, | |
5065 | const struct nls_table *nls_codepage) | |
5066 | { | |
5067 | int rc = 0; | |
5068 | struct smb_com_transaction_change_notify_req *pSMB = NULL; | |
5069 | struct smb_com_ntransaction_change_notify_rsp *pSMBr = NULL; | |
5070 | struct dir_notify_req *dnotify_req; | |
5071 | int bytes_returned; | |
5072 | ||
5073 | cFYI(1, ("In CIFSSMBNotify for file handle %d", (int)netfid)); | |
5074 | rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB, | |
5075 | (void **) &pSMBr); | |
5076 | if (rc) | |
5077 | return rc; | |
5078 | ||
5079 | pSMB->TotalParameterCount = 0 ; | |
5080 | pSMB->TotalDataCount = 0; | |
5081 | pSMB->MaxParameterCount = cpu_to_le32(2); | |
5082 | /* BB find exact data count max from sess structure BB */ | |
5083 | pSMB->MaxDataCount = 0; /* same in little endian or be */ | |
5084 | /* BB VERIFY verify which is correct for above BB */ | |
5085 | pSMB->MaxDataCount = cpu_to_le32((tcon->ses->server->maxBuf - | |
5086 | MAX_CIFS_HDR_SIZE) & 0xFFFFFF00); | |
5087 | ||
5088 | pSMB->MaxSetupCount = 4; | |
5089 | pSMB->Reserved = 0; | |
5090 | pSMB->ParameterOffset = 0; | |
5091 | pSMB->DataCount = 0; | |
5092 | pSMB->DataOffset = 0; | |
5093 | pSMB->SetupCount = 4; /* single byte does not need le conversion */ | |
5094 | pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_NOTIFY_CHANGE); | |
5095 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
5096 | if (notify_subdirs) | |
5097 | pSMB->WatchTree = 1; /* one byte - no le conversion needed */ | |
5098 | pSMB->Reserved2 = 0; | |
5099 | pSMB->CompletionFilter = cpu_to_le32(filter); | |
5100 | pSMB->Fid = netfid; /* file handle always le */ | |
5101 | pSMB->ByteCount = 0; | |
5102 | ||
5103 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5104 | (struct smb_hdr *)pSMBr, &bytes_returned, | |
5105 | CIFS_ASYNC_OP); | |
5106 | if (rc) { | |
5107 | cFYI(1, ("Error in Notify = %d", rc)); | |
5108 | } else { | |
5109 | /* Add file to outstanding requests */ | |
5110 | /* BB change to kmem cache alloc */ | |
5111 | dnotify_req = kmalloc( | |
5112 | sizeof(struct dir_notify_req), | |
5113 | GFP_KERNEL); | |
5114 | if (dnotify_req) { | |
5115 | dnotify_req->Pid = pSMB->hdr.Pid; | |
5116 | dnotify_req->PidHigh = pSMB->hdr.PidHigh; | |
5117 | dnotify_req->Mid = pSMB->hdr.Mid; | |
5118 | dnotify_req->Tid = pSMB->hdr.Tid; | |
5119 | dnotify_req->Uid = pSMB->hdr.Uid; | |
5120 | dnotify_req->netfid = netfid; | |
5121 | dnotify_req->pfile = pfile; | |
5122 | dnotify_req->filter = filter; | |
5123 | dnotify_req->multishot = multishot; | |
5124 | spin_lock(&GlobalMid_Lock); | |
5125 | list_add_tail(&dnotify_req->lhead, | |
5126 | &GlobalDnotifyReqList); | |
5127 | spin_unlock(&GlobalMid_Lock); | |
5128 | } else | |
5129 | rc = -ENOMEM; | |
5130 | } | |
5131 | cifs_buf_release(pSMB); | |
5132 | return rc; | |
5133 | } | |
5134 | #ifdef CONFIG_CIFS_XATTR | |
5135 | ssize_t | |
5136 | CIFSSMBQAllEAs(const int xid, struct cifsTconInfo *tcon, | |
5137 | const unsigned char *searchName, | |
5138 | char *EAData, size_t buf_size, | |
5139 | const struct nls_table *nls_codepage, int remap) | |
5140 | { | |
5141 | /* BB assumes one setup word */ | |
5142 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
5143 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
5144 | int rc = 0; | |
5145 | int bytes_returned; | |
5146 | int name_len; | |
5147 | struct fea *temp_fea; | |
5148 | char *temp_ptr; | |
5149 | __u16 params, byte_count; | |
5150 | ||
5151 | cFYI(1, ("In Query All EAs path %s", searchName)); | |
5152 | QAllEAsRetry: | |
5153 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5154 | (void **) &pSMBr); | |
5155 | if (rc) | |
5156 | return rc; | |
5157 | ||
5158 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5159 | name_len = | |
5160 | cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, | |
5161 | PATH_MAX, nls_codepage, remap); | |
5162 | name_len++; /* trailing null */ | |
5163 | name_len *= 2; | |
5164 | } else { /* BB improve the check for buffer overruns BB */ | |
5165 | name_len = strnlen(searchName, PATH_MAX); | |
5166 | name_len++; /* trailing null */ | |
5167 | strncpy(pSMB->FileName, searchName, name_len); | |
5168 | } | |
5169 | ||
5170 | params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */; | |
5171 | pSMB->TotalDataCount = 0; | |
5172 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
5173 | pSMB->MaxDataCount = cpu_to_le16(4000); /* BB find exact max SMB PDU from sess structure BB */ | |
5174 | pSMB->MaxSetupCount = 0; | |
5175 | pSMB->Reserved = 0; | |
5176 | pSMB->Flags = 0; | |
5177 | pSMB->Timeout = 0; | |
5178 | pSMB->Reserved2 = 0; | |
5179 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
5180 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); | |
5181 | pSMB->DataCount = 0; | |
5182 | pSMB->DataOffset = 0; | |
5183 | pSMB->SetupCount = 1; | |
5184 | pSMB->Reserved3 = 0; | |
5185 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
5186 | byte_count = params + 1 /* pad */ ; | |
5187 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
5188 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
5189 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_QUERY_ALL_EAS); | |
5190 | pSMB->Reserved4 = 0; | |
5191 | pSMB->hdr.smb_buf_length += byte_count; | |
5192 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
5193 | ||
5194 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5195 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5196 | if (rc) { | |
5197 | cFYI(1, ("Send error in QueryAllEAs = %d", rc)); | |
5198 | } else { /* decode response */ | |
5199 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
5200 | ||
5201 | /* BB also check enough total bytes returned */ | |
5202 | /* BB we need to improve the validity checking | |
5203 | of these trans2 responses */ | |
5204 | if (rc || (pSMBr->ByteCount < 4)) | |
5205 | rc = -EIO; /* bad smb */ | |
5206 | /* else if (pFindData){ | |
5207 | memcpy((char *) pFindData, | |
5208 | (char *) &pSMBr->hdr.Protocol + | |
5209 | data_offset, kl); | |
5210 | }*/ else { | |
5211 | /* check that length of list is not more than bcc */ | |
5212 | /* check that each entry does not go beyond length | |
5213 | of list */ | |
5214 | /* check that each element of each entry does not | |
5215 | go beyond end of list */ | |
5216 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
5217 | struct fealist *ea_response_data; | |
5218 | rc = 0; | |
5219 | /* validate_trans2_offsets() */ | |
5220 | /* BB check if start of smb + data_offset > &bcc+ bcc */ | |
5221 | ea_response_data = (struct fealist *) | |
5222 | (((char *) &pSMBr->hdr.Protocol) + | |
5223 | data_offset); | |
5224 | name_len = le32_to_cpu(ea_response_data->list_len); | |
5225 | cFYI(1, ("ea length %d", name_len)); | |
5226 | if (name_len <= 8) { | |
5227 | /* returned EA size zeroed at top of function */ | |
5228 | cFYI(1, ("empty EA list returned from server")); | |
5229 | } else { | |
5230 | /* account for ea list len */ | |
5231 | name_len -= 4; | |
5232 | temp_fea = ea_response_data->list; | |
5233 | temp_ptr = (char *)temp_fea; | |
5234 | while (name_len > 0) { | |
5235 | __u16 value_len; | |
5236 | name_len -= 4; | |
5237 | temp_ptr += 4; | |
5238 | rc += temp_fea->name_len; | |
5239 | /* account for prefix user. and trailing null */ | |
5240 | rc = rc + 5 + 1; | |
5241 | if (rc < (int)buf_size) { | |
5242 | memcpy(EAData, "user.", 5); | |
5243 | EAData += 5; | |
5244 | memcpy(EAData, temp_ptr, | |
5245 | temp_fea->name_len); | |
5246 | EAData += temp_fea->name_len; | |
5247 | /* null terminate name */ | |
5248 | *EAData = 0; | |
5249 | EAData = EAData + 1; | |
5250 | } else if (buf_size == 0) { | |
5251 | /* skip copy - calc size only */ | |
5252 | } else { | |
5253 | /* stop before overrun buffer */ | |
5254 | rc = -ERANGE; | |
5255 | break; | |
5256 | } | |
5257 | name_len -= temp_fea->name_len; | |
5258 | temp_ptr += temp_fea->name_len; | |
5259 | /* account for trailing null */ | |
5260 | name_len--; | |
5261 | temp_ptr++; | |
5262 | value_len = | |
5263 | le16_to_cpu(temp_fea->value_len); | |
5264 | name_len -= value_len; | |
5265 | temp_ptr += value_len; | |
5266 | /* BB check that temp_ptr is still | |
5267 | within the SMB BB*/ | |
5268 | ||
5269 | /* no trailing null to account for | |
5270 | in value len */ | |
5271 | /* go on to next EA */ | |
5272 | temp_fea = (struct fea *)temp_ptr; | |
5273 | } | |
5274 | } | |
5275 | } | |
5276 | } | |
5277 | if (pSMB) | |
5278 | cifs_buf_release(pSMB); | |
5279 | if (rc == -EAGAIN) | |
5280 | goto QAllEAsRetry; | |
5281 | ||
5282 | return (ssize_t)rc; | |
5283 | } | |
5284 | ||
5285 | ssize_t CIFSSMBQueryEA(const int xid, struct cifsTconInfo *tcon, | |
5286 | const unsigned char *searchName, const unsigned char *ea_name, | |
5287 | unsigned char *ea_value, size_t buf_size, | |
5288 | const struct nls_table *nls_codepage, int remap) | |
5289 | { | |
5290 | TRANSACTION2_QPI_REQ *pSMB = NULL; | |
5291 | TRANSACTION2_QPI_RSP *pSMBr = NULL; | |
5292 | int rc = 0; | |
5293 | int bytes_returned; | |
5294 | int name_len; | |
5295 | struct fea *temp_fea; | |
5296 | char *temp_ptr; | |
5297 | __u16 params, byte_count; | |
5298 | ||
5299 | cFYI(1, ("In Query EA path %s", searchName)); | |
5300 | QEARetry: | |
5301 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5302 | (void **) &pSMBr); | |
5303 | if (rc) | |
5304 | return rc; | |
5305 | ||
5306 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5307 | name_len = | |
5308 | cifsConvertToUCS((__le16 *) pSMB->FileName, searchName, | |
5309 | PATH_MAX, nls_codepage, remap); | |
5310 | name_len++; /* trailing null */ | |
5311 | name_len *= 2; | |
5312 | } else { /* BB improve the check for buffer overruns BB */ | |
5313 | name_len = strnlen(searchName, PATH_MAX); | |
5314 | name_len++; /* trailing null */ | |
5315 | strncpy(pSMB->FileName, searchName, name_len); | |
5316 | } | |
5317 | ||
5318 | params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */; | |
5319 | pSMB->TotalDataCount = 0; | |
5320 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
5321 | pSMB->MaxDataCount = cpu_to_le16(4000); /* BB find exact max SMB PDU from sess structure BB */ | |
5322 | pSMB->MaxSetupCount = 0; | |
5323 | pSMB->Reserved = 0; | |
5324 | pSMB->Flags = 0; | |
5325 | pSMB->Timeout = 0; | |
5326 | pSMB->Reserved2 = 0; | |
5327 | pSMB->ParameterOffset = cpu_to_le16(offsetof( | |
5328 | struct smb_com_transaction2_qpi_req, InformationLevel) - 4); | |
5329 | pSMB->DataCount = 0; | |
5330 | pSMB->DataOffset = 0; | |
5331 | pSMB->SetupCount = 1; | |
5332 | pSMB->Reserved3 = 0; | |
5333 | pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION); | |
5334 | byte_count = params + 1 /* pad */ ; | |
5335 | pSMB->TotalParameterCount = cpu_to_le16(params); | |
5336 | pSMB->ParameterCount = pSMB->TotalParameterCount; | |
5337 | pSMB->InformationLevel = cpu_to_le16(SMB_INFO_QUERY_ALL_EAS); | |
5338 | pSMB->Reserved4 = 0; | |
5339 | pSMB->hdr.smb_buf_length += byte_count; | |
5340 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
5341 | ||
5342 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5343 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5344 | if (rc) { | |
5345 | cFYI(1, ("Send error in Query EA = %d", rc)); | |
5346 | } else { /* decode response */ | |
5347 | rc = validate_t2((struct smb_t2_rsp *)pSMBr); | |
5348 | ||
5349 | /* BB also check enough total bytes returned */ | |
5350 | /* BB we need to improve the validity checking | |
5351 | of these trans2 responses */ | |
5352 | if (rc || (pSMBr->ByteCount < 4)) | |
5353 | rc = -EIO; /* bad smb */ | |
5354 | /* else if (pFindData){ | |
5355 | memcpy((char *) pFindData, | |
5356 | (char *) &pSMBr->hdr.Protocol + | |
5357 | data_offset, kl); | |
5358 | }*/ else { | |
5359 | /* check that length of list is not more than bcc */ | |
5360 | /* check that each entry does not go beyond length | |
5361 | of list */ | |
5362 | /* check that each element of each entry does not | |
5363 | go beyond end of list */ | |
5364 | __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); | |
5365 | struct fealist *ea_response_data; | |
5366 | rc = -ENODATA; | |
5367 | /* validate_trans2_offsets() */ | |
5368 | /* BB check if start of smb + data_offset > &bcc+ bcc*/ | |
5369 | ea_response_data = (struct fealist *) | |
5370 | (((char *) &pSMBr->hdr.Protocol) + | |
5371 | data_offset); | |
5372 | name_len = le32_to_cpu(ea_response_data->list_len); | |
5373 | cFYI(1, ("ea length %d", name_len)); | |
5374 | if (name_len <= 8) { | |
5375 | /* returned EA size zeroed at top of function */ | |
5376 | cFYI(1, ("empty EA list returned from server")); | |
5377 | } else { | |
5378 | /* account for ea list len */ | |
5379 | name_len -= 4; | |
5380 | temp_fea = ea_response_data->list; | |
5381 | temp_ptr = (char *)temp_fea; | |
5382 | /* loop through checking if we have a matching | |
5383 | name and then return the associated value */ | |
5384 | while (name_len > 0) { | |
5385 | __u16 value_len; | |
5386 | name_len -= 4; | |
5387 | temp_ptr += 4; | |
5388 | value_len = | |
5389 | le16_to_cpu(temp_fea->value_len); | |
5390 | /* BB validate that value_len falls within SMB, | |
5391 | even though maximum for name_len is 255 */ | |
5392 | if (memcmp(temp_fea->name, ea_name, | |
5393 | temp_fea->name_len) == 0) { | |
5394 | /* found a match */ | |
5395 | rc = value_len; | |
5396 | /* account for prefix user. and trailing null */ | |
5397 | if (rc <= (int)buf_size) { | |
5398 | memcpy(ea_value, | |
5399 | temp_fea->name+temp_fea->name_len+1, | |
5400 | rc); | |
5401 | /* ea values, unlike ea | |
5402 | names, are not null | |
5403 | terminated */ | |
5404 | } else if (buf_size == 0) { | |
5405 | /* skip copy - calc size only */ | |
5406 | } else { | |
5407 | /* stop before overrun buffer */ | |
5408 | rc = -ERANGE; | |
5409 | } | |
5410 | break; | |
5411 | } | |
5412 | name_len -= temp_fea->name_len; | |
5413 | temp_ptr += temp_fea->name_len; | |
5414 | /* account for trailing null */ | |
5415 | name_len--; | |
5416 | temp_ptr++; | |
5417 | name_len -= value_len; | |
5418 | temp_ptr += value_len; | |
5419 | /* No trailing null to account for in | |
5420 | value_len. Go on to next EA */ | |
5421 | temp_fea = (struct fea *)temp_ptr; | |
5422 | } | |
5423 | } | |
5424 | } | |
5425 | } | |
5426 | if (pSMB) | |
5427 | cifs_buf_release(pSMB); | |
5428 | if (rc == -EAGAIN) | |
5429 | goto QEARetry; | |
5430 | ||
5431 | return (ssize_t)rc; | |
5432 | } | |
5433 | ||
5434 | int | |
5435 | CIFSSMBSetEA(const int xid, struct cifsTconInfo *tcon, const char *fileName, | |
5436 | const char *ea_name, const void *ea_value, | |
5437 | const __u16 ea_value_len, const struct nls_table *nls_codepage, | |
5438 | int remap) | |
5439 | { | |
5440 | struct smb_com_transaction2_spi_req *pSMB = NULL; | |
5441 | struct smb_com_transaction2_spi_rsp *pSMBr = NULL; | |
5442 | struct fealist *parm_data; | |
5443 | int name_len; | |
5444 | int rc = 0; | |
5445 | int bytes_returned = 0; | |
5446 | __u16 params, param_offset, byte_count, offset, count; | |
5447 | ||
5448 | cFYI(1, ("In SetEA")); | |
5449 | SetEARetry: | |
5450 | rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, | |
5451 | (void **) &pSMBr); | |
5452 | if (rc) | |
5453 | return rc; | |
5454 | ||
5455 | if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) { | |
5456 | name_len = | |
5457 | cifsConvertToUCS((__le16 *) pSMB->FileName, fileName, | |
5458 | PATH_MAX, nls_codepage, remap); | |
5459 | name_len++; /* trailing null */ | |
5460 | name_len *= 2; | |
5461 | } else { /* BB improve the check for buffer overruns BB */ | |
5462 | name_len = strnlen(fileName, PATH_MAX); | |
5463 | name_len++; /* trailing null */ | |
5464 | strncpy(pSMB->FileName, fileName, name_len); | |
5465 | } | |
5466 | ||
5467 | params = 6 + name_len; | |
5468 | ||
5469 | /* done calculating parms using name_len of file name, | |
5470 | now use name_len to calculate length of ea name | |
5471 | we are going to create in the inode xattrs */ | |
5472 | if (ea_name == NULL) | |
5473 | name_len = 0; | |
5474 | else | |
5475 | name_len = strnlen(ea_name, 255); | |
5476 | ||
5477 | count = sizeof(*parm_data) + ea_value_len + name_len; | |
5478 | pSMB->MaxParameterCount = cpu_to_le16(2); | |
5479 | pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB size from sess */ | |
5480 | pSMB->MaxSetupCount = 0; | |
5481 | pSMB->Reserved = 0; | |
5482 | pSMB->Flags = 0; | |
5483 | pSMB->Timeout = 0; | |
5484 | pSMB->Reserved2 = 0; | |
5485 | param_offset = offsetof(struct smb_com_transaction2_spi_req, | |
5486 | InformationLevel) - 4; | |
5487 | offset = param_offset + params; | |
5488 | pSMB->InformationLevel = | |
5489 | cpu_to_le16(SMB_SET_FILE_EA); | |
5490 | ||
5491 | parm_data = | |
5492 | (struct fealist *) (((char *) &pSMB->hdr.Protocol) + | |
5493 | offset); | |
5494 | pSMB->ParameterOffset = cpu_to_le16(param_offset); | |
5495 | pSMB->DataOffset = cpu_to_le16(offset); | |
5496 | pSMB->SetupCount = 1; | |
5497 | pSMB->Reserved3 = 0; | |
5498 | pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION); | |
5499 | byte_count = 3 /* pad */ + params + count; | |
5500 | pSMB->DataCount = cpu_to_le16(count); | |
5501 | parm_data->list_len = cpu_to_le32(count); | |
5502 | parm_data->list[0].EA_flags = 0; | |
5503 | /* we checked above that name len is less than 255 */ | |
5504 | parm_data->list[0].name_len = (__u8)name_len; | |
5505 | /* EA names are always ASCII */ | |
5506 | if (ea_name) | |
5507 | strncpy(parm_data->list[0].name, ea_name, name_len); | |
5508 | parm_data->list[0].name[name_len] = 0; | |
5509 | parm_data->list[0].value_len = cpu_to_le16(ea_value_len); | |
5510 | /* caller ensures that ea_value_len is less than 64K but | |
5511 | we need to ensure that it fits within the smb */ | |
5512 | ||
5513 | /*BB add length check to see if it would fit in | |
5514 | negotiated SMB buffer size BB */ | |
5515 | /* if (ea_value_len > buffer_size - 512 (enough for header)) */ | |
5516 | if (ea_value_len) | |
5517 | memcpy(parm_data->list[0].name+name_len+1, | |
5518 | ea_value, ea_value_len); | |
5519 | ||
5520 | pSMB->TotalDataCount = pSMB->DataCount; | |
5521 | pSMB->ParameterCount = cpu_to_le16(params); | |
5522 | pSMB->TotalParameterCount = pSMB->ParameterCount; | |
5523 | pSMB->Reserved4 = 0; | |
5524 | pSMB->hdr.smb_buf_length += byte_count; | |
5525 | pSMB->ByteCount = cpu_to_le16(byte_count); | |
5526 | rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, | |
5527 | (struct smb_hdr *) pSMBr, &bytes_returned, 0); | |
5528 | if (rc) | |
5529 | cFYI(1, ("SetPathInfo (EA) returned %d", rc)); | |
5530 | ||
5531 | cifs_buf_release(pSMB); | |
5532 | ||
5533 | if (rc == -EAGAIN) | |
5534 | goto SetEARetry; | |
5535 | ||
5536 | return rc; | |
5537 | } | |
5538 | ||
5539 | #endif |